1 /* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.view; 18 19 import static android.view.WindowCallbacks.RESIZE_MODE_DOCKED_DIVIDER; 20 import static android.view.WindowCallbacks.RESIZE_MODE_FREEFORM; 21 import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY; 22 import static android.view.WindowManager.LayoutParams.TYPE_DOCK_DIVIDER; 23 import static android.view.WindowManager.LayoutParams.TYPE_INPUT_METHOD; 24 import static android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL; 25 import static android.view.WindowManager.LayoutParams.TYPE_VOLUME_OVERLAY; 26 27 import android.Manifest; 28 import android.animation.LayoutTransition; 29 import android.annotation.NonNull; 30 import android.app.ActivityManagerNative; 31 import android.app.ResourcesManager; 32 import android.content.ClipDescription; 33 import android.content.ComponentCallbacks; 34 import android.content.Context; 35 import android.content.pm.PackageManager; 36 import android.content.res.CompatibilityInfo; 37 import android.content.res.Configuration; 38 import android.content.res.Resources; 39 import android.graphics.Canvas; 40 import android.graphics.Matrix; 41 import android.graphics.PixelFormat; 42 import android.graphics.Point; 43 import android.graphics.PointF; 44 import android.graphics.PorterDuff; 45 import android.graphics.Rect; 46 import android.graphics.Region; 47 import android.graphics.drawable.AnimatedVectorDrawable; 48 import android.graphics.drawable.Drawable; 49 import android.hardware.display.DisplayManager; 50 import android.hardware.display.DisplayManager.DisplayListener; 51 import android.hardware.input.InputManager; 52 import android.media.AudioManager; 53 import android.os.Binder; 54 import android.os.Build; 55 import android.os.Bundle; 56 import android.os.Debug; 57 import android.os.Handler; 58 import android.os.Looper; 59 import android.os.Message; 60 import android.os.ParcelFileDescriptor; 61 import android.os.Process; 62 import android.os.RemoteException; 63 import android.os.SystemClock; 64 import android.os.SystemProperties; 65 import android.os.Trace; 66 import android.util.AndroidRuntimeException; 67 import android.util.DisplayMetrics; 68 import android.util.Log; 69 import android.util.Slog; 70 import android.util.TimeUtils; 71 import android.util.TypedValue; 72 import android.view.Surface.OutOfResourcesException; 73 import android.view.View.AttachInfo; 74 import android.view.View.MeasureSpec; 75 import android.view.accessibility.AccessibilityEvent; 76 import android.view.accessibility.AccessibilityManager; 77 import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 78 import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 79 import android.view.accessibility.AccessibilityNodeInfo; 80 import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction; 81 import android.view.accessibility.AccessibilityNodeProvider; 82 import android.view.accessibility.IAccessibilityInteractionConnection; 83 import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 84 import android.view.animation.AccelerateDecelerateInterpolator; 85 import android.view.animation.Interpolator; 86 import android.view.inputmethod.InputMethodManager; 87 import android.widget.Scroller; 88 89 import com.android.internal.R; 90 import com.android.internal.annotations.GuardedBy; 91 import com.android.internal.os.IResultReceiver; 92 import com.android.internal.os.SomeArgs; 93 import com.android.internal.policy.PhoneFallbackEventHandler; 94 import com.android.internal.view.BaseSurfaceHolder; 95 import com.android.internal.view.RootViewSurfaceTaker; 96 97 import java.io.FileDescriptor; 98 import java.io.IOException; 99 import java.io.OutputStream; 100 import java.io.PrintWriter; 101 import java.lang.ref.WeakReference; 102 import java.util.ArrayList; 103 import java.util.HashSet; 104 import java.util.concurrent.CountDownLatch; 105 106 /** 107 * The top of a view hierarchy, implementing the needed protocol between View 108 * and the WindowManager. This is for the most part an internal implementation 109 * detail of {@link WindowManagerGlobal}. 110 * 111 * {@hide} 112 */ 113 @SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 114 public final class ViewRootImpl implements ViewParent, 115 View.AttachInfo.Callbacks, ThreadedRenderer.HardwareDrawCallbacks { 116 private static final String TAG = "ViewRootImpl"; 117 private static final boolean DBG = false; 118 private static final boolean LOCAL_LOGV = false; 119 /** @noinspection PointlessBooleanExpression*/ 120 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 121 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 122 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 123 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 124 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 125 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 126 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 127 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 128 private static final boolean DEBUG_FPS = false; 129 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 130 private static final boolean DEBUG_KEEP_SCREEN_ON = false || LOCAL_LOGV; 131 132 /** 133 * Set to false if we do not want to use the multi threaded renderer. Note that by disabling 134 * this, WindowCallbacks will not fire. 135 */ 136 private static final boolean USE_MT_RENDERER = true; 137 138 /** 139 * Set this system property to true to force the view hierarchy to render 140 * at 60 Hz. This can be used to measure the potential framerate. 141 */ 142 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 143 144 // properties used by emulator to determine display shape 145 public static final String PROPERTY_EMULATOR_WIN_OUTSET_BOTTOM_PX = 146 "ro.emu.win_outset_bottom_px"; 147 148 /** 149 * Maximum time we allow the user to roll the trackball enough to generate 150 * a key event, before resetting the counters. 151 */ 152 static final int MAX_TRACKBALL_DELAY = 250; 153 154 static final ThreadLocal<HandlerActionQueue> sRunQueues = new ThreadLocal<HandlerActionQueue>(); 155 156 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList(); 157 static boolean sFirstDrawComplete = false; 158 159 static final ArrayList<ComponentCallbacks> sConfigCallbacks = new ArrayList(); 160 161 /** 162 * This list must only be modified by the main thread, so a lock is only needed when changing 163 * the list or when accessing the list from a non-main thread. 164 */ 165 @GuardedBy("mWindowCallbacks") 166 final ArrayList<WindowCallbacks> mWindowCallbacks = new ArrayList<>(); 167 final Context mContext; 168 final IWindowSession mWindowSession; 169 @NonNull Display mDisplay; 170 final DisplayManager mDisplayManager; 171 final String mBasePackageName; 172 173 final int[] mTmpLocation = new int[2]; 174 175 final TypedValue mTmpValue = new TypedValue(); 176 177 final Thread mThread; 178 179 final WindowLeaked mLocation; 180 181 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 182 183 final W mWindow; 184 185 final int mTargetSdkVersion; 186 187 int mSeq; 188 189 View mView; 190 191 View mAccessibilityFocusedHost; 192 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 193 194 // The view which captures mouse input, or null when no one is capturing. 195 View mCapturingView; 196 197 int mViewVisibility; 198 boolean mAppVisible = true; 199 // For recents to freeform transition we need to keep drawing after the app receives information 200 // that it became invisible. This will ignore that information and depend on the decor view 201 // visibility to control drawing. The decor view visibility will get adjusted when the app get 202 // stopped and that's when the app will stop drawing further frames. 203 private boolean mForceDecorViewVisibility = false; 204 int mOrigWindowType = -1; 205 206 /** Whether the window had focus during the most recent traversal. */ 207 boolean mHadWindowFocus; 208 209 /** 210 * Whether the window lost focus during a previous traversal and has not 211 * yet gained it back. Used to determine whether a WINDOW_STATE_CHANGE 212 * accessibility events should be sent during traversal. 213 */ 214 boolean mLostWindowFocus; 215 216 // Set to true if the owner of this window is in the stopped state, 217 // so the window should no longer be active. 218 boolean mStopped = false; 219 220 // Set to true if the owner of this window is in ambient mode, 221 // which means it won't receive input events. 222 boolean mIsAmbientMode = false; 223 224 // Set to true to stop input during an Activity Transition. 225 boolean mPausedForTransition = false; 226 227 boolean mLastInCompatMode = false; 228 229 SurfaceHolder.Callback2 mSurfaceHolderCallback; 230 BaseSurfaceHolder mSurfaceHolder; 231 boolean mIsCreating; 232 boolean mDrawingAllowed; 233 234 final Region mTransparentRegion; 235 final Region mPreviousTransparentRegion; 236 237 int mWidth; 238 int mHeight; 239 Rect mDirty; 240 boolean mIsAnimating; 241 242 private boolean mDragResizing; 243 private boolean mInvalidateRootRequested; 244 private int mResizeMode; 245 private int mCanvasOffsetX; 246 private int mCanvasOffsetY; 247 private boolean mActivityRelaunched; 248 249 CompatibilityInfo.Translator mTranslator; 250 251 final View.AttachInfo mAttachInfo; 252 InputChannel mInputChannel; 253 InputQueue.Callback mInputQueueCallback; 254 InputQueue mInputQueue; 255 FallbackEventHandler mFallbackEventHandler; 256 Choreographer mChoreographer; 257 258 final Rect mTempRect; // used in the transaction to not thrash the heap. 259 final Rect mVisRect; // used to retrieve visible rect of focused view. 260 261 boolean mTraversalScheduled; 262 int mTraversalBarrier; 263 boolean mWillDrawSoon; 264 /** Set to true while in performTraversals for detecting when die(true) is called from internal 265 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 266 boolean mIsInTraversal; 267 boolean mApplyInsetsRequested; 268 boolean mLayoutRequested; 269 boolean mFirst; 270 boolean mReportNextDraw; 271 boolean mFullRedrawNeeded; 272 boolean mNewSurfaceNeeded; 273 boolean mHasHadWindowFocus; 274 boolean mLastWasImTarget; 275 boolean mForceNextWindowRelayout; 276 CountDownLatch mWindowDrawCountDown; 277 278 boolean mIsDrawing; 279 int mLastSystemUiVisibility; 280 int mClientWindowLayoutFlags; 281 boolean mLastOverscanRequested; 282 283 // Pool of queued input events. 284 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 285 private QueuedInputEvent mQueuedInputEventPool; 286 private int mQueuedInputEventPoolSize; 287 288 /* Input event queue. 289 * Pending input events are input events waiting to be delivered to the input stages 290 * and handled by the application. 291 */ 292 QueuedInputEvent mPendingInputEventHead; 293 QueuedInputEvent mPendingInputEventTail; 294 int mPendingInputEventCount; 295 boolean mProcessInputEventsScheduled; 296 boolean mUnbufferedInputDispatch; 297 String mPendingInputEventQueueLengthCounterName = "pq"; 298 299 InputStage mFirstInputStage; 300 InputStage mFirstPostImeInputStage; 301 InputStage mSyntheticInputStage; 302 303 boolean mWindowAttributesChanged = false; 304 int mWindowAttributesChangesFlag = 0; 305 306 // These can be accessed by any thread, must be protected with a lock. 307 // Surface can never be reassigned or cleared (use Surface.clear()). 308 final Surface mSurface = new Surface(); 309 310 boolean mAdded; 311 boolean mAddedTouchMode; 312 313 // These are accessed by multiple threads. 314 final Rect mWinFrame; // frame given by window manager. 315 316 final Rect mPendingOverscanInsets = new Rect(); 317 final Rect mPendingVisibleInsets = new Rect(); 318 final Rect mPendingStableInsets = new Rect(); 319 final Rect mPendingContentInsets = new Rect(); 320 final Rect mPendingOutsets = new Rect(); 321 final Rect mPendingBackDropFrame = new Rect(); 322 boolean mPendingAlwaysConsumeNavBar; 323 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 324 = new ViewTreeObserver.InternalInsetsInfo(); 325 326 final Rect mDispatchContentInsets = new Rect(); 327 final Rect mDispatchStableInsets = new Rect(); 328 329 private WindowInsets mLastWindowInsets; 330 331 final Configuration mLastConfiguration = new Configuration(); 332 final Configuration mPendingConfiguration = new Configuration(); 333 334 boolean mScrollMayChange; 335 int mSoftInputMode; 336 WeakReference<View> mLastScrolledFocus; 337 int mScrollY; 338 int mCurScrollY; 339 Scroller mScroller; 340 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 341 private ArrayList<LayoutTransition> mPendingTransitions; 342 343 final ViewConfiguration mViewConfiguration; 344 345 /* Drag/drop */ 346 ClipDescription mDragDescription; 347 View mCurrentDragView; 348 volatile Object mLocalDragState; 349 final PointF mDragPoint = new PointF(); 350 final PointF mLastTouchPoint = new PointF(); 351 int mLastTouchSource; 352 353 private boolean mProfileRendering; 354 private Choreographer.FrameCallback mRenderProfiler; 355 private boolean mRenderProfilingEnabled; 356 357 // Variables to track frames per second, enabled via DEBUG_FPS flag 358 private long mFpsStartTime = -1; 359 private long mFpsPrevTime = -1; 360 private int mFpsNumFrames; 361 362 private int mPointerIconType = PointerIcon.TYPE_NOT_SPECIFIED; 363 private PointerIcon mCustomPointerIcon = null; 364 365 /** 366 * see {@link #playSoundEffect(int)} 367 */ 368 AudioManager mAudioManager; 369 370 final AccessibilityManager mAccessibilityManager; 371 372 AccessibilityInteractionController mAccessibilityInteractionController; 373 374 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 375 HighContrastTextManager mHighContrastTextManager; 376 377 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 378 379 HashSet<View> mTempHashSet; 380 381 private final int mDensity; 382 private final int mNoncompatDensity; 383 384 private boolean mInLayout = false; 385 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 386 boolean mHandlingLayoutInLayoutRequest = false; 387 388 private int mViewLayoutDirectionInitial; 389 390 /** Set to true once doDie() has been called. */ 391 private boolean mRemoved; 392 393 private boolean mNeedsHwRendererSetup; 394 395 /** 396 * Consistency verifier for debugging purposes. 397 */ 398 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 399 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 400 new InputEventConsistencyVerifier(this, 0) : null; 401 402 static final class SystemUiVisibilityInfo { 403 int seq; 404 int globalVisibility; 405 int localValue; 406 int localChanges; 407 } 408 409 private String mTag = TAG; 410 411 public ViewRootImpl(Context context, Display display) { 412 mContext = context; 413 mWindowSession = WindowManagerGlobal.getWindowSession(); 414 mDisplay = display; 415 mBasePackageName = context.getBasePackageName(); 416 mThread = Thread.currentThread(); 417 mLocation = new WindowLeaked(null); 418 mLocation.fillInStackTrace(); 419 mWidth = -1; 420 mHeight = -1; 421 mDirty = new Rect(); 422 mTempRect = new Rect(); 423 mVisRect = new Rect(); 424 mWinFrame = new Rect(); 425 mWindow = new W(this); 426 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 427 mViewVisibility = View.GONE; 428 mTransparentRegion = new Region(); 429 mPreviousTransparentRegion = new Region(); 430 mFirst = true; // true for the first time the view is added 431 mAdded = false; 432 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 433 mAccessibilityManager = AccessibilityManager.getInstance(context); 434 mAccessibilityInteractionConnectionManager = 435 new AccessibilityInteractionConnectionManager(); 436 mAccessibilityManager.addAccessibilityStateChangeListener( 437 mAccessibilityInteractionConnectionManager); 438 mHighContrastTextManager = new HighContrastTextManager(); 439 mAccessibilityManager.addHighTextContrastStateChangeListener( 440 mHighContrastTextManager); 441 mViewConfiguration = ViewConfiguration.get(context); 442 mDensity = context.getResources().getDisplayMetrics().densityDpi; 443 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 444 mFallbackEventHandler = new PhoneFallbackEventHandler(context); 445 mChoreographer = Choreographer.getInstance(); 446 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 447 loadSystemProperties(); 448 } 449 450 public static void addFirstDrawHandler(Runnable callback) { 451 synchronized (sFirstDrawHandlers) { 452 if (!sFirstDrawComplete) { 453 sFirstDrawHandlers.add(callback); 454 } 455 } 456 } 457 458 public static void addConfigCallback(ComponentCallbacks callback) { 459 synchronized (sConfigCallbacks) { 460 sConfigCallbacks.add(callback); 461 } 462 } 463 464 public void addWindowCallbacks(WindowCallbacks callback) { 465 if (USE_MT_RENDERER) { 466 synchronized (mWindowCallbacks) { 467 mWindowCallbacks.add(callback); 468 } 469 } 470 } 471 472 public void removeWindowCallbacks(WindowCallbacks callback) { 473 if (USE_MT_RENDERER) { 474 synchronized (mWindowCallbacks) { 475 mWindowCallbacks.remove(callback); 476 } 477 } 478 } 479 480 public void reportDrawFinish() { 481 if (mWindowDrawCountDown != null) { 482 mWindowDrawCountDown.countDown(); 483 } 484 } 485 486 // FIXME for perf testing only 487 private boolean mProfile = false; 488 489 /** 490 * Call this to profile the next traversal call. 491 * FIXME for perf testing only. Remove eventually 492 */ 493 public void profile() { 494 mProfile = true; 495 } 496 497 /** 498 * Indicates whether we are in touch mode. Calling this method triggers an IPC 499 * call and should be avoided whenever possible. 500 * 501 * @return True, if the device is in touch mode, false otherwise. 502 * 503 * @hide 504 */ 505 static boolean isInTouchMode() { 506 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 507 if (windowSession != null) { 508 try { 509 return windowSession.getInTouchMode(); 510 } catch (RemoteException e) { 511 } 512 } 513 return false; 514 } 515 516 /** 517 * Notifies us that our child has been rebuilt, following 518 * a window preservation operation. In these cases we 519 * keep the same DecorView, but the activity controlling it 520 * is a different instance, and we need to update our 521 * callbacks. 522 * 523 * @hide 524 */ 525 public void notifyChildRebuilt() { 526 if (mView instanceof RootViewSurfaceTaker) { 527 mSurfaceHolderCallback = 528 ((RootViewSurfaceTaker)mView).willYouTakeTheSurface(); 529 if (mSurfaceHolderCallback != null) { 530 mSurfaceHolder = new TakenSurfaceHolder(); 531 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 532 } else { 533 mSurfaceHolder = null; 534 } 535 536 mInputQueueCallback = 537 ((RootViewSurfaceTaker)mView).willYouTakeTheInputQueue(); 538 if (mInputQueueCallback != null) { 539 mInputQueueCallback.onInputQueueCreated(mInputQueue); 540 } 541 } 542 } 543 544 /** 545 * We have one child 546 */ 547 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 548 synchronized (this) { 549 if (mView == null) { 550 mView = view; 551 552 mAttachInfo.mDisplayState = mDisplay.getState(); 553 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 554 555 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 556 mFallbackEventHandler.setView(view); 557 mWindowAttributes.copyFrom(attrs); 558 if (mWindowAttributes.packageName == null) { 559 mWindowAttributes.packageName = mBasePackageName; 560 } 561 attrs = mWindowAttributes; 562 setTag(); 563 564 if (DEBUG_KEEP_SCREEN_ON && (mClientWindowLayoutFlags 565 & WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) != 0 566 && (attrs.flags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) == 0) { 567 Slog.d(mTag, "setView: FLAG_KEEP_SCREEN_ON changed from true to false!"); 568 } 569 // Keep track of the actual window flags supplied by the client. 570 mClientWindowLayoutFlags = attrs.flags; 571 572 setAccessibilityFocus(null, null); 573 574 if (view instanceof RootViewSurfaceTaker) { 575 mSurfaceHolderCallback = 576 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 577 if (mSurfaceHolderCallback != null) { 578 mSurfaceHolder = new TakenSurfaceHolder(); 579 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 580 } 581 } 582 583 // Compute surface insets required to draw at specified Z value. 584 // TODO: Use real shadow insets for a constant max Z. 585 if (!attrs.hasManualSurfaceInsets) { 586 attrs.setSurfaceInsets(view, false /*manual*/, true /*preservePrevious*/); 587 } 588 589 CompatibilityInfo compatibilityInfo = 590 mDisplay.getDisplayAdjustments().getCompatibilityInfo(); 591 mTranslator = compatibilityInfo.getTranslator(); 592 593 // If the application owns the surface, don't enable hardware acceleration 594 if (mSurfaceHolder == null) { 595 enableHardwareAcceleration(attrs); 596 } 597 598 boolean restore = false; 599 if (mTranslator != null) { 600 mSurface.setCompatibilityTranslator(mTranslator); 601 restore = true; 602 attrs.backup(); 603 mTranslator.translateWindowLayout(attrs); 604 } 605 if (DEBUG_LAYOUT) Log.d(mTag, "WindowLayout in setView:" + attrs); 606 607 if (!compatibilityInfo.supportsScreen()) { 608 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 609 mLastInCompatMode = true; 610 } 611 612 mSoftInputMode = attrs.softInputMode; 613 mWindowAttributesChanged = true; 614 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 615 mAttachInfo.mRootView = view; 616 mAttachInfo.mScalingRequired = mTranslator != null; 617 mAttachInfo.mApplicationScale = 618 mTranslator == null ? 1.0f : mTranslator.applicationScale; 619 if (panelParentView != null) { 620 mAttachInfo.mPanelParentWindowToken 621 = panelParentView.getApplicationWindowToken(); 622 } 623 mAdded = true; 624 int res; /* = WindowManagerImpl.ADD_OKAY; */ 625 626 // Schedule the first layout -before- adding to the window 627 // manager, to make sure we do the relayout before receiving 628 // any other events from the system. 629 requestLayout(); 630 if ((mWindowAttributes.inputFeatures 631 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 632 mInputChannel = new InputChannel(); 633 } 634 mForceDecorViewVisibility = (mWindowAttributes.privateFlags 635 & PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY) != 0; 636 try { 637 mOrigWindowType = mWindowAttributes.type; 638 mAttachInfo.mRecomputeGlobalAttributes = true; 639 collectViewAttributes(); 640 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 641 getHostVisibility(), mDisplay.getDisplayId(), 642 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, 643 mAttachInfo.mOutsets, mInputChannel); 644 } catch (RemoteException e) { 645 mAdded = false; 646 mView = null; 647 mAttachInfo.mRootView = null; 648 mInputChannel = null; 649 mFallbackEventHandler.setView(null); 650 unscheduleTraversals(); 651 setAccessibilityFocus(null, null); 652 throw new RuntimeException("Adding window failed", e); 653 } finally { 654 if (restore) { 655 attrs.restore(); 656 } 657 } 658 659 if (mTranslator != null) { 660 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 661 } 662 mPendingOverscanInsets.set(0, 0, 0, 0); 663 mPendingContentInsets.set(mAttachInfo.mContentInsets); 664 mPendingStableInsets.set(mAttachInfo.mStableInsets); 665 mPendingVisibleInsets.set(0, 0, 0, 0); 666 mAttachInfo.mAlwaysConsumeNavBar = 667 (res & WindowManagerGlobal.ADD_FLAG_ALWAYS_CONSUME_NAV_BAR) != 0; 668 mPendingAlwaysConsumeNavBar = mAttachInfo.mAlwaysConsumeNavBar; 669 if (DEBUG_LAYOUT) Log.v(mTag, "Added window " + mWindow); 670 if (res < WindowManagerGlobal.ADD_OKAY) { 671 mAttachInfo.mRootView = null; 672 mAdded = false; 673 mFallbackEventHandler.setView(null); 674 unscheduleTraversals(); 675 setAccessibilityFocus(null, null); 676 switch (res) { 677 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 678 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 679 throw new WindowManager.BadTokenException( 680 "Unable to add window -- token " + attrs.token 681 + " is not valid; is your activity running?"); 682 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 683 throw new WindowManager.BadTokenException( 684 "Unable to add window -- token " + attrs.token 685 + " is not for an application"); 686 case WindowManagerGlobal.ADD_APP_EXITING: 687 throw new WindowManager.BadTokenException( 688 "Unable to add window -- app for token " + attrs.token 689 + " is exiting"); 690 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 691 throw new WindowManager.BadTokenException( 692 "Unable to add window -- window " + mWindow 693 + " has already been added"); 694 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 695 // Silently ignore -- we would have just removed it 696 // right away, anyway. 697 return; 698 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 699 throw new WindowManager.BadTokenException("Unable to add window " 700 + mWindow + " -- another window of type " 701 + mWindowAttributes.type + " already exists"); 702 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 703 throw new WindowManager.BadTokenException("Unable to add window " 704 + mWindow + " -- permission denied for window type " 705 + mWindowAttributes.type); 706 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 707 throw new WindowManager.InvalidDisplayException("Unable to add window " 708 + mWindow + " -- the specified display can not be found"); 709 case WindowManagerGlobal.ADD_INVALID_TYPE: 710 throw new WindowManager.InvalidDisplayException("Unable to add window " 711 + mWindow + " -- the specified window type " 712 + mWindowAttributes.type + " is not valid"); 713 } 714 throw new RuntimeException( 715 "Unable to add window -- unknown error code " + res); 716 } 717 718 if (view instanceof RootViewSurfaceTaker) { 719 mInputQueueCallback = 720 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 721 } 722 if (mInputChannel != null) { 723 if (mInputQueueCallback != null) { 724 mInputQueue = new InputQueue(); 725 mInputQueueCallback.onInputQueueCreated(mInputQueue); 726 } 727 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 728 Looper.myLooper()); 729 } 730 731 view.assignParent(this); 732 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 733 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 734 735 if (mAccessibilityManager.isEnabled()) { 736 mAccessibilityInteractionConnectionManager.ensureConnection(); 737 } 738 739 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 740 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 741 } 742 743 // Set up the input pipeline. 744 CharSequence counterSuffix = attrs.getTitle(); 745 mSyntheticInputStage = new SyntheticInputStage(); 746 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 747 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 748 "aq:native-post-ime:" + counterSuffix); 749 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 750 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 751 "aq:ime:" + counterSuffix); 752 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 753 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 754 "aq:native-pre-ime:" + counterSuffix); 755 756 mFirstInputStage = nativePreImeStage; 757 mFirstPostImeInputStage = earlyPostImeStage; 758 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 759 } 760 } 761 } 762 763 private void setTag() { 764 final String[] split = mWindowAttributes.getTitle().toString().split("\\."); 765 if (split.length > 0) { 766 mTag = TAG + "[" + split[split.length - 1] + "]"; 767 } 768 } 769 770 /** Whether the window is in local focus mode or not */ 771 private boolean isInLocalFocusMode() { 772 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 773 } 774 775 public int getWindowFlags() { 776 return mWindowAttributes.flags; 777 } 778 779 public int getDisplayId() { 780 return mDisplay.getDisplayId(); 781 } 782 783 public CharSequence getTitle() { 784 return mWindowAttributes.getTitle(); 785 } 786 787 void destroyHardwareResources() { 788 if (mAttachInfo.mHardwareRenderer != null) { 789 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 790 mAttachInfo.mHardwareRenderer.destroy(); 791 } 792 } 793 794 public void detachFunctor(long functor) { 795 if (mAttachInfo.mHardwareRenderer != null) { 796 // Fence so that any pending invokeFunctor() messages will be processed 797 // before we return from detachFunctor. 798 mAttachInfo.mHardwareRenderer.stopDrawing(); 799 } 800 } 801 802 /** 803 * Schedules the functor for execution in either kModeProcess or 804 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 805 * 806 * @param functor The native functor to invoke 807 * @param waitForCompletion If true, this will not return until the functor 808 * has invoked. If false, the functor may be invoked 809 * asynchronously. 810 */ 811 public static void invokeFunctor(long functor, boolean waitForCompletion) { 812 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 813 } 814 815 public void registerAnimatingRenderNode(RenderNode animator) { 816 if (mAttachInfo.mHardwareRenderer != null) { 817 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 818 } else { 819 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 820 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 821 } 822 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 823 } 824 } 825 826 public void registerVectorDrawableAnimator( 827 AnimatedVectorDrawable.VectorDrawableAnimatorRT animator) { 828 if (mAttachInfo.mHardwareRenderer != null) { 829 mAttachInfo.mHardwareRenderer.registerVectorDrawableAnimator(animator); 830 } 831 } 832 833 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 834 mAttachInfo.mHardwareAccelerated = false; 835 mAttachInfo.mHardwareAccelerationRequested = false; 836 837 // Don't enable hardware acceleration when the application is in compatibility mode 838 if (mTranslator != null) return; 839 840 // Try to enable hardware acceleration if requested 841 final boolean hardwareAccelerated = 842 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 843 844 if (hardwareAccelerated) { 845 if (!ThreadedRenderer.isAvailable()) { 846 return; 847 } 848 849 // Persistent processes (including the system) should not do 850 // accelerated rendering on low-end devices. In that case, 851 // sRendererDisabled will be set. In addition, the system process 852 // itself should never do accelerated rendering. In that case, both 853 // sRendererDisabled and sSystemRendererDisabled are set. When 854 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 855 // can be used by code on the system process to escape that and enable 856 // HW accelerated drawing. (This is basically for the lock screen.) 857 858 final boolean fakeHwAccelerated = (attrs.privateFlags & 859 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 860 final boolean forceHwAccelerated = (attrs.privateFlags & 861 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 862 863 if (fakeHwAccelerated) { 864 // This is exclusively for the preview windows the window manager 865 // shows for launching applications, so they will look more like 866 // the app being launched. 867 mAttachInfo.mHardwareAccelerationRequested = true; 868 } else if (!ThreadedRenderer.sRendererDisabled 869 || (ThreadedRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 870 if (mAttachInfo.mHardwareRenderer != null) { 871 mAttachInfo.mHardwareRenderer.destroy(); 872 } 873 874 final Rect insets = attrs.surfaceInsets; 875 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 876 || insets.top != 0 || insets.bottom != 0; 877 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 878 mAttachInfo.mHardwareRenderer = ThreadedRenderer.create(mContext, translucent); 879 if (mAttachInfo.mHardwareRenderer != null) { 880 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 881 mAttachInfo.mHardwareAccelerated = 882 mAttachInfo.mHardwareAccelerationRequested = true; 883 } 884 } 885 } 886 } 887 888 public View getView() { 889 return mView; 890 } 891 892 final WindowLeaked getLocation() { 893 return mLocation; 894 } 895 896 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 897 synchronized (this) { 898 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 899 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 900 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 901 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 902 final int oldSoftInputMode = mWindowAttributes.softInputMode; 903 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 904 905 if (DEBUG_KEEP_SCREEN_ON && (mClientWindowLayoutFlags 906 & WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) != 0 907 && (attrs.flags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) == 0) { 908 Slog.d(mTag, "setLayoutParams: FLAG_KEEP_SCREEN_ON from true to false!"); 909 } 910 911 // Keep track of the actual window flags supplied by the client. 912 mClientWindowLayoutFlags = attrs.flags; 913 914 // Preserve compatible window flag if exists. 915 final int compatibleWindowFlag = mWindowAttributes.privateFlags 916 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 917 918 // Transfer over system UI visibility values as they carry current state. 919 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 920 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 921 922 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 923 if ((mWindowAttributesChangesFlag 924 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 925 // Recompute system ui visibility. 926 mAttachInfo.mRecomputeGlobalAttributes = true; 927 } 928 if ((mWindowAttributesChangesFlag 929 & WindowManager.LayoutParams.LAYOUT_CHANGED) != 0) { 930 // Request to update light center. 931 mAttachInfo.mNeedsUpdateLightCenter = true; 932 } 933 if (mWindowAttributes.packageName == null) { 934 mWindowAttributes.packageName = mBasePackageName; 935 } 936 mWindowAttributes.privateFlags |= compatibleWindowFlag; 937 938 if (mWindowAttributes.preservePreviousSurfaceInsets) { 939 // Restore old surface insets. 940 mWindowAttributes.surfaceInsets.set( 941 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 942 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 943 } else if (mWindowAttributes.surfaceInsets.left != oldInsetLeft 944 || mWindowAttributes.surfaceInsets.top != oldInsetTop 945 || mWindowAttributes.surfaceInsets.right != oldInsetRight 946 || mWindowAttributes.surfaceInsets.bottom != oldInsetBottom) { 947 mNeedsHwRendererSetup = true; 948 } 949 950 applyKeepScreenOnFlag(mWindowAttributes); 951 952 if (newView) { 953 mSoftInputMode = attrs.softInputMode; 954 requestLayout(); 955 } 956 957 // Don't lose the mode we last auto-computed. 958 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 959 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 960 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 961 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 962 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 963 } 964 965 mWindowAttributesChanged = true; 966 scheduleTraversals(); 967 } 968 } 969 970 void handleAppVisibility(boolean visible) { 971 if (mAppVisible != visible) { 972 mAppVisible = visible; 973 scheduleTraversals(); 974 if (!mAppVisible) { 975 WindowManagerGlobal.trimForeground(); 976 } 977 } 978 } 979 980 void handleGetNewSurface() { 981 mNewSurfaceNeeded = true; 982 mFullRedrawNeeded = true; 983 scheduleTraversals(); 984 } 985 986 private final DisplayListener mDisplayListener = new DisplayListener() { 987 @Override 988 public void onDisplayChanged(int displayId) { 989 if (mView != null && mDisplay.getDisplayId() == displayId) { 990 final int oldDisplayState = mAttachInfo.mDisplayState; 991 final int newDisplayState = mDisplay.getState(); 992 if (oldDisplayState != newDisplayState) { 993 mAttachInfo.mDisplayState = newDisplayState; 994 pokeDrawLockIfNeeded(); 995 if (oldDisplayState != Display.STATE_UNKNOWN) { 996 final int oldScreenState = toViewScreenState(oldDisplayState); 997 final int newScreenState = toViewScreenState(newDisplayState); 998 if (oldScreenState != newScreenState) { 999 mView.dispatchScreenStateChanged(newScreenState); 1000 } 1001 if (oldDisplayState == Display.STATE_OFF) { 1002 // Draw was suppressed so we need to for it to happen here. 1003 mFullRedrawNeeded = true; 1004 scheduleTraversals(); 1005 } 1006 } 1007 } 1008 } 1009 } 1010 1011 @Override 1012 public void onDisplayRemoved(int displayId) { 1013 } 1014 1015 @Override 1016 public void onDisplayAdded(int displayId) { 1017 } 1018 1019 private int toViewScreenState(int displayState) { 1020 return displayState == Display.STATE_OFF ? 1021 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 1022 } 1023 }; 1024 1025 void pokeDrawLockIfNeeded() { 1026 final int displayState = mAttachInfo.mDisplayState; 1027 if (mView != null && mAdded && mTraversalScheduled 1028 && (displayState == Display.STATE_DOZE 1029 || displayState == Display.STATE_DOZE_SUSPEND)) { 1030 try { 1031 mWindowSession.pokeDrawLock(mWindow); 1032 } catch (RemoteException ex) { 1033 // System server died, oh well. 1034 } 1035 } 1036 } 1037 1038 @Override 1039 public void requestFitSystemWindows() { 1040 checkThread(); 1041 mApplyInsetsRequested = true; 1042 scheduleTraversals(); 1043 } 1044 1045 @Override 1046 public void requestLayout() { 1047 if (!mHandlingLayoutInLayoutRequest) { 1048 checkThread(); 1049 mLayoutRequested = true; 1050 scheduleTraversals(); 1051 } 1052 } 1053 1054 @Override 1055 public boolean isLayoutRequested() { 1056 return mLayoutRequested; 1057 } 1058 1059 void invalidate() { 1060 mDirty.set(0, 0, mWidth, mHeight); 1061 if (!mWillDrawSoon) { 1062 scheduleTraversals(); 1063 } 1064 } 1065 1066 void invalidateWorld(View view) { 1067 view.invalidate(); 1068 if (view instanceof ViewGroup) { 1069 ViewGroup parent = (ViewGroup) view; 1070 for (int i = 0; i < parent.getChildCount(); i++) { 1071 invalidateWorld(parent.getChildAt(i)); 1072 } 1073 } 1074 } 1075 1076 @Override 1077 public void invalidateChild(View child, Rect dirty) { 1078 invalidateChildInParent(null, dirty); 1079 } 1080 1081 @Override 1082 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 1083 checkThread(); 1084 if (DEBUG_DRAW) Log.v(mTag, "Invalidate child: " + dirty); 1085 1086 if (dirty == null) { 1087 invalidate(); 1088 return null; 1089 } else if (dirty.isEmpty() && !mIsAnimating) { 1090 return null; 1091 } 1092 1093 if (mCurScrollY != 0 || mTranslator != null) { 1094 mTempRect.set(dirty); 1095 dirty = mTempRect; 1096 if (mCurScrollY != 0) { 1097 dirty.offset(0, -mCurScrollY); 1098 } 1099 if (mTranslator != null) { 1100 mTranslator.translateRectInAppWindowToScreen(dirty); 1101 } 1102 if (mAttachInfo.mScalingRequired) { 1103 dirty.inset(-1, -1); 1104 } 1105 } 1106 1107 invalidateRectOnScreen(dirty); 1108 1109 return null; 1110 } 1111 1112 private void invalidateRectOnScreen(Rect dirty) { 1113 final Rect localDirty = mDirty; 1114 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 1115 mAttachInfo.mSetIgnoreDirtyState = true; 1116 mAttachInfo.mIgnoreDirtyState = true; 1117 } 1118 1119 // Add the new dirty rect to the current one 1120 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 1121 // Intersect with the bounds of the window to skip 1122 // updates that lie outside of the visible region 1123 final float appScale = mAttachInfo.mApplicationScale; 1124 final boolean intersected = localDirty.intersect(0, 0, 1125 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 1126 if (!intersected) { 1127 localDirty.setEmpty(); 1128 } 1129 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 1130 scheduleTraversals(); 1131 } 1132 } 1133 1134 public void setIsAmbientMode(boolean ambient) { 1135 mIsAmbientMode = ambient; 1136 } 1137 1138 void setWindowStopped(boolean stopped) { 1139 if (mStopped != stopped) { 1140 mStopped = stopped; 1141 final ThreadedRenderer renderer = mAttachInfo.mHardwareRenderer; 1142 if (renderer != null) { 1143 if (DEBUG_DRAW) Log.d(mTag, "WindowStopped on " + getTitle() + " set to " + mStopped); 1144 renderer.setStopped(mStopped); 1145 } 1146 if (!mStopped) { 1147 scheduleTraversals(); 1148 } else { 1149 if (renderer != null) { 1150 renderer.destroyHardwareResources(mView); 1151 } 1152 } 1153 } 1154 } 1155 1156 /** 1157 * Block the input events during an Activity Transition. The KEYCODE_BACK event is allowed 1158 * through to allow quick reversal of the Activity Transition. 1159 * 1160 * @param paused true to pause, false to resume. 1161 */ 1162 public void setPausedForTransition(boolean paused) { 1163 mPausedForTransition = paused; 1164 } 1165 1166 @Override 1167 public ViewParent getParent() { 1168 return null; 1169 } 1170 1171 @Override 1172 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 1173 if (child != mView) { 1174 throw new RuntimeException("child is not mine, honest!"); 1175 } 1176 // Note: don't apply scroll offset, because we want to know its 1177 // visibility in the virtual canvas being given to the view hierarchy. 1178 return r.intersect(0, 0, mWidth, mHeight); 1179 } 1180 1181 @Override 1182 public void bringChildToFront(View child) { 1183 } 1184 1185 int getHostVisibility() { 1186 return (mAppVisible || mForceDecorViewVisibility) ? mView.getVisibility() : View.GONE; 1187 } 1188 1189 /** 1190 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1191 * This list will be cleared after the transitions on the list are start()'ed. These 1192 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1193 * happens during the layout phase of traversal, which we want to complete before any of the 1194 * animations are started (because those animations may side-effect properties that layout 1195 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1196 * to the list and it is started just prior to starting the drawing phase of traversal. 1197 * 1198 * @param transition The LayoutTransition to be started on the next traversal. 1199 * 1200 * @hide 1201 */ 1202 public void requestTransitionStart(LayoutTransition transition) { 1203 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1204 if (mPendingTransitions == null) { 1205 mPendingTransitions = new ArrayList<LayoutTransition>(); 1206 } 1207 mPendingTransitions.add(transition); 1208 } 1209 } 1210 1211 /** 1212 * Notifies the HardwareRenderer that a new frame will be coming soon. 1213 * Currently only {@link ThreadedRenderer} cares about this, and uses 1214 * this knowledge to adjust the scheduling of off-thread animations 1215 */ 1216 void notifyRendererOfFramePending() { 1217 if (mAttachInfo.mHardwareRenderer != null) { 1218 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1219 } 1220 } 1221 1222 void scheduleTraversals() { 1223 if (!mTraversalScheduled) { 1224 mTraversalScheduled = true; 1225 mTraversalBarrier = mHandler.getLooper().getQueue().postSyncBarrier(); 1226 mChoreographer.postCallback( 1227 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1228 if (!mUnbufferedInputDispatch) { 1229 scheduleConsumeBatchedInput(); 1230 } 1231 notifyRendererOfFramePending(); 1232 pokeDrawLockIfNeeded(); 1233 } 1234 } 1235 1236 void unscheduleTraversals() { 1237 if (mTraversalScheduled) { 1238 mTraversalScheduled = false; 1239 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1240 mChoreographer.removeCallbacks( 1241 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1242 } 1243 } 1244 1245 void doTraversal() { 1246 if (mTraversalScheduled) { 1247 mTraversalScheduled = false; 1248 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1249 1250 if (mProfile) { 1251 Debug.startMethodTracing("ViewAncestor"); 1252 } 1253 1254 performTraversals(); 1255 1256 if (mProfile) { 1257 Debug.stopMethodTracing(); 1258 mProfile = false; 1259 } 1260 } 1261 } 1262 1263 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1264 // Update window's global keep screen on flag: if a view has requested 1265 // that the screen be kept on, then it is always set; otherwise, it is 1266 // set to whatever the client last requested for the global state. 1267 if (mAttachInfo.mKeepScreenOn) { 1268 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1269 } else { 1270 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1271 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1272 } 1273 } 1274 1275 private boolean collectViewAttributes() { 1276 if (mAttachInfo.mRecomputeGlobalAttributes) { 1277 //Log.i(mTag, "Computing view hierarchy attributes!"); 1278 mAttachInfo.mRecomputeGlobalAttributes = false; 1279 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1280 mAttachInfo.mKeepScreenOn = false; 1281 mAttachInfo.mSystemUiVisibility = 0; 1282 mAttachInfo.mHasSystemUiListeners = false; 1283 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1284 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1285 WindowManager.LayoutParams params = mWindowAttributes; 1286 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1287 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1288 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1289 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1290 applyKeepScreenOnFlag(params); 1291 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1292 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1293 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1294 return true; 1295 } 1296 } 1297 return false; 1298 } 1299 1300 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1301 int vis = 0; 1302 // Translucent decor window flags imply stable system ui visibility. 1303 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1304 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1305 } 1306 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1307 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1308 } 1309 return vis; 1310 } 1311 1312 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1313 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1314 int childWidthMeasureSpec; 1315 int childHeightMeasureSpec; 1316 boolean windowSizeMayChange = false; 1317 1318 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(mTag, 1319 "Measuring " + host + " in display " + desiredWindowWidth 1320 + "x" + desiredWindowHeight + "..."); 1321 1322 boolean goodMeasure = false; 1323 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1324 // On large screens, we don't want to allow dialogs to just 1325 // stretch to fill the entire width of the screen to display 1326 // one line of text. First try doing the layout at a smaller 1327 // size to see if it will fit. 1328 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1329 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1330 int baseSize = 0; 1331 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1332 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1333 } 1334 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": baseSize=" + baseSize 1335 + ", desiredWindowWidth=" + desiredWindowWidth); 1336 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1337 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1338 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1339 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1340 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1341 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() 1342 + ") from width spec: " + MeasureSpec.toString(childWidthMeasureSpec) 1343 + " and height spec: " + MeasureSpec.toString(childHeightMeasureSpec)); 1344 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1345 goodMeasure = true; 1346 } else { 1347 // Didn't fit in that size... try expanding a bit. 1348 baseSize = (baseSize+desiredWindowWidth)/2; 1349 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": next baseSize=" 1350 + baseSize); 1351 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1352 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1353 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1354 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1355 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1356 if (DEBUG_DIALOG) Log.v(mTag, "Good!"); 1357 goodMeasure = true; 1358 } 1359 } 1360 } 1361 } 1362 1363 if (!goodMeasure) { 1364 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1365 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1366 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1367 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1368 windowSizeMayChange = true; 1369 } 1370 } 1371 1372 if (DBG) { 1373 System.out.println("======================================"); 1374 System.out.println("performTraversals -- after measure"); 1375 host.debug(); 1376 } 1377 1378 return windowSizeMayChange; 1379 } 1380 1381 /** 1382 * Modifies the input matrix such that it maps view-local coordinates to 1383 * on-screen coordinates. 1384 * 1385 * @param m input matrix to modify 1386 */ 1387 void transformMatrixToGlobal(Matrix m) { 1388 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1389 } 1390 1391 /** 1392 * Modifies the input matrix such that it maps on-screen coordinates to 1393 * view-local coordinates. 1394 * 1395 * @param m input matrix to modify 1396 */ 1397 void transformMatrixToLocal(Matrix m) { 1398 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1399 } 1400 1401 /* package */ WindowInsets getWindowInsets(boolean forceConstruct) { 1402 if (mLastWindowInsets == null || forceConstruct) { 1403 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1404 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1405 Rect contentInsets = mDispatchContentInsets; 1406 Rect stableInsets = mDispatchStableInsets; 1407 // For dispatch we preserve old logic, but for direct requests from Views we allow to 1408 // immediately use pending insets. 1409 if (!forceConstruct 1410 && (!mPendingContentInsets.equals(contentInsets) || 1411 !mPendingStableInsets.equals(stableInsets))) { 1412 contentInsets = mPendingContentInsets; 1413 stableInsets = mPendingStableInsets; 1414 } 1415 Rect outsets = mAttachInfo.mOutsets; 1416 if (outsets.left > 0 || outsets.top > 0 || outsets.right > 0 || outsets.bottom > 0) { 1417 contentInsets = new Rect(contentInsets.left + outsets.left, 1418 contentInsets.top + outsets.top, contentInsets.right + outsets.right, 1419 contentInsets.bottom + outsets.bottom); 1420 } 1421 mLastWindowInsets = new WindowInsets(contentInsets, 1422 null /* windowDecorInsets */, stableInsets, 1423 mContext.getResources().getConfiguration().isScreenRound(), 1424 mAttachInfo.mAlwaysConsumeNavBar); 1425 } 1426 return mLastWindowInsets; 1427 } 1428 1429 void dispatchApplyInsets(View host) { 1430 host.dispatchApplyWindowInsets(getWindowInsets(true /* forceConstruct */)); 1431 } 1432 1433 private static boolean shouldUseDisplaySize(final WindowManager.LayoutParams lp) { 1434 return lp.type == TYPE_STATUS_BAR_PANEL 1435 || lp.type == TYPE_INPUT_METHOD 1436 || lp.type == TYPE_VOLUME_OVERLAY; 1437 } 1438 1439 private int dipToPx(int dip) { 1440 final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics(); 1441 return (int) (displayMetrics.density * dip + 0.5f); 1442 } 1443 1444 private void performTraversals() { 1445 // cache mView since it is used so much below... 1446 final View host = mView; 1447 1448 if (DBG) { 1449 System.out.println("======================================"); 1450 System.out.println("performTraversals"); 1451 host.debug(); 1452 } 1453 1454 if (host == null || !mAdded) 1455 return; 1456 1457 mIsInTraversal = true; 1458 mWillDrawSoon = true; 1459 boolean windowSizeMayChange = false; 1460 boolean newSurface = false; 1461 boolean surfaceChanged = false; 1462 WindowManager.LayoutParams lp = mWindowAttributes; 1463 1464 int desiredWindowWidth; 1465 int desiredWindowHeight; 1466 1467 final int viewVisibility = getHostVisibility(); 1468 final boolean viewVisibilityChanged = !mFirst 1469 && (mViewVisibility != viewVisibility || mNewSurfaceNeeded); 1470 final boolean viewUserVisibilityChanged = !mFirst && 1471 ((mViewVisibility == View.VISIBLE) != (viewVisibility == View.VISIBLE)); 1472 1473 WindowManager.LayoutParams params = null; 1474 if (mWindowAttributesChanged) { 1475 mWindowAttributesChanged = false; 1476 surfaceChanged = true; 1477 params = lp; 1478 } 1479 CompatibilityInfo compatibilityInfo = 1480 mDisplay.getDisplayAdjustments().getCompatibilityInfo(); 1481 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1482 params = lp; 1483 mFullRedrawNeeded = true; 1484 mLayoutRequested = true; 1485 if (mLastInCompatMode) { 1486 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1487 mLastInCompatMode = false; 1488 } else { 1489 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1490 mLastInCompatMode = true; 1491 } 1492 } 1493 1494 mWindowAttributesChangesFlag = 0; 1495 1496 Rect frame = mWinFrame; 1497 if (mFirst) { 1498 mFullRedrawNeeded = true; 1499 mLayoutRequested = true; 1500 1501 if (shouldUseDisplaySize(lp)) { 1502 // NOTE -- system code, won't try to do compat mode. 1503 Point size = new Point(); 1504 mDisplay.getRealSize(size); 1505 desiredWindowWidth = size.x; 1506 desiredWindowHeight = size.y; 1507 } else { 1508 Configuration config = mContext.getResources().getConfiguration(); 1509 desiredWindowWidth = dipToPx(config.screenWidthDp); 1510 desiredWindowHeight = dipToPx(config.screenHeightDp); 1511 } 1512 1513 // We used to use the following condition to choose 32 bits drawing caches: 1514 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1515 // However, windows are now always 32 bits by default, so choose 32 bits 1516 mAttachInfo.mUse32BitDrawingCache = true; 1517 mAttachInfo.mHasWindowFocus = false; 1518 mAttachInfo.mWindowVisibility = viewVisibility; 1519 mAttachInfo.mRecomputeGlobalAttributes = false; 1520 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1521 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1522 // Set the layout direction if it has not been set before (inherit is the default) 1523 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1524 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1525 } 1526 host.dispatchAttachedToWindow(mAttachInfo, 0); 1527 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1528 dispatchApplyInsets(host); 1529 //Log.i(mTag, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1530 1531 } else { 1532 desiredWindowWidth = frame.width(); 1533 desiredWindowHeight = frame.height(); 1534 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1535 if (DEBUG_ORIENTATION) Log.v(mTag, "View " + host + " resized to: " + frame); 1536 mFullRedrawNeeded = true; 1537 mLayoutRequested = true; 1538 windowSizeMayChange = true; 1539 } 1540 } 1541 1542 if (viewVisibilityChanged) { 1543 mAttachInfo.mWindowVisibility = viewVisibility; 1544 host.dispatchWindowVisibilityChanged(viewVisibility); 1545 if (viewUserVisibilityChanged) { 1546 host.dispatchVisibilityAggregated(viewVisibility == View.VISIBLE); 1547 } 1548 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1549 endDragResizing(); 1550 destroyHardwareResources(); 1551 } 1552 if (viewVisibility == View.GONE) { 1553 // After making a window gone, we will count it as being 1554 // shown for the first time the next time it gets focus. 1555 mHasHadWindowFocus = false; 1556 } 1557 } 1558 1559 // Non-visible windows can't hold accessibility focus. 1560 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1561 host.clearAccessibilityFocus(); 1562 } 1563 1564 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1565 getRunQueue().executeActions(mAttachInfo.mHandler); 1566 1567 boolean insetsChanged = false; 1568 1569 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1570 if (layoutRequested) { 1571 1572 final Resources res = mView.getContext().getResources(); 1573 1574 if (mFirst) { 1575 // make sure touch mode code executes by setting cached value 1576 // to opposite of the added touch mode. 1577 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1578 ensureTouchModeLocally(mAddedTouchMode); 1579 } else { 1580 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1581 insetsChanged = true; 1582 } 1583 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1584 insetsChanged = true; 1585 } 1586 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1587 insetsChanged = true; 1588 } 1589 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1590 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1591 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1592 + mAttachInfo.mVisibleInsets); 1593 } 1594 if (!mPendingOutsets.equals(mAttachInfo.mOutsets)) { 1595 insetsChanged = true; 1596 } 1597 if (mPendingAlwaysConsumeNavBar != mAttachInfo.mAlwaysConsumeNavBar) { 1598 insetsChanged = true; 1599 } 1600 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1601 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1602 windowSizeMayChange = true; 1603 1604 if (shouldUseDisplaySize(lp)) { 1605 // NOTE -- system code, won't try to do compat mode. 1606 Point size = new Point(); 1607 mDisplay.getRealSize(size); 1608 desiredWindowWidth = size.x; 1609 desiredWindowHeight = size.y; 1610 } else { 1611 Configuration config = res.getConfiguration(); 1612 desiredWindowWidth = dipToPx(config.screenWidthDp); 1613 desiredWindowHeight = dipToPx(config.screenHeightDp); 1614 } 1615 } 1616 } 1617 1618 // Ask host how big it wants to be 1619 windowSizeMayChange |= measureHierarchy(host, lp, res, 1620 desiredWindowWidth, desiredWindowHeight); 1621 } 1622 1623 if (collectViewAttributes()) { 1624 params = lp; 1625 } 1626 if (mAttachInfo.mForceReportNewAttributes) { 1627 mAttachInfo.mForceReportNewAttributes = false; 1628 params = lp; 1629 } 1630 1631 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1632 mAttachInfo.mViewVisibilityChanged = false; 1633 int resizeMode = mSoftInputMode & 1634 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1635 // If we are in auto resize mode, then we need to determine 1636 // what mode to use now. 1637 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1638 final int N = mAttachInfo.mScrollContainers.size(); 1639 for (int i=0; i<N; i++) { 1640 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1641 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1642 } 1643 } 1644 if (resizeMode == 0) { 1645 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1646 } 1647 if ((lp.softInputMode & 1648 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1649 lp.softInputMode = (lp.softInputMode & 1650 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1651 resizeMode; 1652 params = lp; 1653 } 1654 } 1655 } 1656 1657 if (params != null) { 1658 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1659 if (!PixelFormat.formatHasAlpha(params.format)) { 1660 params.format = PixelFormat.TRANSLUCENT; 1661 } 1662 } 1663 mAttachInfo.mOverscanRequested = (params.flags 1664 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1665 } 1666 1667 if (mApplyInsetsRequested) { 1668 mApplyInsetsRequested = false; 1669 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1670 dispatchApplyInsets(host); 1671 if (mLayoutRequested) { 1672 // Short-circuit catching a new layout request here, so 1673 // we don't need to go through two layout passes when things 1674 // change due to fitting system windows, which can happen a lot. 1675 windowSizeMayChange |= measureHierarchy(host, lp, 1676 mView.getContext().getResources(), 1677 desiredWindowWidth, desiredWindowHeight); 1678 } 1679 } 1680 1681 if (layoutRequested) { 1682 // Clear this now, so that if anything requests a layout in the 1683 // rest of this function we will catch it and re-run a full 1684 // layout pass. 1685 mLayoutRequested = false; 1686 } 1687 1688 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1689 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1690 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1691 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1692 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1693 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1694 windowShouldResize |= mDragResizing && mResizeMode == RESIZE_MODE_FREEFORM; 1695 1696 // If the activity was just relaunched, it might have unfrozen the task bounds (while 1697 // relaunching), so we need to force a call into window manager to pick up the latest 1698 // bounds. 1699 windowShouldResize |= mActivityRelaunched; 1700 1701 // Determine whether to compute insets. 1702 // If there are no inset listeners remaining then we may still need to compute 1703 // insets in case the old insets were non-empty and must be reset. 1704 final boolean computesInternalInsets = 1705 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1706 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1707 1708 boolean insetsPending = false; 1709 int relayoutResult = 0; 1710 boolean updatedConfiguration = false; 1711 1712 final int surfaceGenerationId = mSurface.getGenerationId(); 1713 1714 final boolean isViewVisible = viewVisibility == View.VISIBLE; 1715 if (mFirst || windowShouldResize || insetsChanged || 1716 viewVisibilityChanged || params != null || mForceNextWindowRelayout) { 1717 mForceNextWindowRelayout = false; 1718 1719 if (isViewVisible) { 1720 // If this window is giving internal insets to the window 1721 // manager, and it is being added or changing its visibility, 1722 // then we want to first give the window manager "fake" 1723 // insets to cause it to effectively ignore the content of 1724 // the window during layout. This avoids it briefly causing 1725 // other windows to resize/move based on the raw frame of the 1726 // window, waiting until we can finish laying out this window 1727 // and get back to the window manager with the ultimately 1728 // computed insets. 1729 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1730 } 1731 1732 if (mSurfaceHolder != null) { 1733 mSurfaceHolder.mSurfaceLock.lock(); 1734 mDrawingAllowed = true; 1735 } 1736 1737 boolean hwInitialized = false; 1738 boolean contentInsetsChanged = false; 1739 boolean hadSurface = mSurface.isValid(); 1740 1741 try { 1742 if (DEBUG_LAYOUT) { 1743 Log.i(mTag, "host=w:" + host.getMeasuredWidth() + ", h:" + 1744 host.getMeasuredHeight() + ", params=" + params); 1745 } 1746 1747 if (mAttachInfo.mHardwareRenderer != null) { 1748 // relayoutWindow may decide to destroy mSurface. As that decision 1749 // happens in WindowManager service, we need to be defensive here 1750 // and stop using the surface in case it gets destroyed. 1751 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1752 // Animations were running so we need to push a frame 1753 // to resume them 1754 mDirty.set(0, 0, mWidth, mHeight); 1755 } 1756 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1757 } 1758 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1759 1760 if (DEBUG_LAYOUT) Log.v(mTag, "relayout: frame=" + frame.toShortString() 1761 + " overscan=" + mPendingOverscanInsets.toShortString() 1762 + " content=" + mPendingContentInsets.toShortString() 1763 + " visible=" + mPendingVisibleInsets.toShortString() 1764 + " visible=" + mPendingStableInsets.toShortString() 1765 + " outsets=" + mPendingOutsets.toShortString() 1766 + " surface=" + mSurface); 1767 1768 if (mPendingConfiguration.seq != 0) { 1769 if (DEBUG_CONFIGURATION) Log.v(mTag, "Visible with new config: " 1770 + mPendingConfiguration); 1771 updateConfiguration(new Configuration(mPendingConfiguration), !mFirst); 1772 mPendingConfiguration.seq = 0; 1773 updatedConfiguration = true; 1774 } 1775 1776 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1777 mAttachInfo.mOverscanInsets); 1778 contentInsetsChanged = !mPendingContentInsets.equals( 1779 mAttachInfo.mContentInsets); 1780 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1781 mAttachInfo.mVisibleInsets); 1782 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1783 mAttachInfo.mStableInsets); 1784 final boolean outsetsChanged = !mPendingOutsets.equals(mAttachInfo.mOutsets); 1785 final boolean surfaceSizeChanged = (relayoutResult 1786 & WindowManagerGlobal.RELAYOUT_RES_SURFACE_RESIZED) != 0; 1787 final boolean alwaysConsumeNavBarChanged = 1788 mPendingAlwaysConsumeNavBar != mAttachInfo.mAlwaysConsumeNavBar; 1789 if (contentInsetsChanged) { 1790 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1791 if (DEBUG_LAYOUT) Log.v(mTag, "Content insets changing to: " 1792 + mAttachInfo.mContentInsets); 1793 } 1794 if (overscanInsetsChanged) { 1795 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1796 if (DEBUG_LAYOUT) Log.v(mTag, "Overscan insets changing to: " 1797 + mAttachInfo.mOverscanInsets); 1798 // Need to relayout with content insets. 1799 contentInsetsChanged = true; 1800 } 1801 if (stableInsetsChanged) { 1802 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1803 if (DEBUG_LAYOUT) Log.v(mTag, "Decor insets changing to: " 1804 + mAttachInfo.mStableInsets); 1805 // Need to relayout with content insets. 1806 contentInsetsChanged = true; 1807 } 1808 if (alwaysConsumeNavBarChanged) { 1809 mAttachInfo.mAlwaysConsumeNavBar = mPendingAlwaysConsumeNavBar; 1810 contentInsetsChanged = true; 1811 } 1812 if (contentInsetsChanged || mLastSystemUiVisibility != 1813 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1814 || mLastOverscanRequested != mAttachInfo.mOverscanRequested 1815 || outsetsChanged) { 1816 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1817 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1818 mAttachInfo.mOutsets.set(mPendingOutsets); 1819 mApplyInsetsRequested = false; 1820 dispatchApplyInsets(host); 1821 } 1822 if (visibleInsetsChanged) { 1823 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1824 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1825 + mAttachInfo.mVisibleInsets); 1826 } 1827 1828 if (!hadSurface) { 1829 if (mSurface.isValid()) { 1830 // If we are creating a new surface, then we need to 1831 // completely redraw it. Also, when we get to the 1832 // point of drawing it we will hold off and schedule 1833 // a new traversal instead. This is so we can tell the 1834 // window manager about all of the windows being displayed 1835 // before actually drawing them, so it can display then 1836 // all at once. 1837 newSurface = true; 1838 mFullRedrawNeeded = true; 1839 mPreviousTransparentRegion.setEmpty(); 1840 1841 // Only initialize up-front if transparent regions are not 1842 // requested, otherwise defer to see if the entire window 1843 // will be transparent 1844 if (mAttachInfo.mHardwareRenderer != null) { 1845 try { 1846 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1847 mSurface); 1848 if (hwInitialized && (host.mPrivateFlags 1849 & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) == 0) { 1850 // Don't pre-allocate if transparent regions 1851 // are requested as they may not be needed 1852 mSurface.allocateBuffers(); 1853 } 1854 } catch (OutOfResourcesException e) { 1855 handleOutOfResourcesException(e); 1856 return; 1857 } 1858 } 1859 } 1860 } else if (!mSurface.isValid()) { 1861 // If the surface has been removed, then reset the scroll 1862 // positions. 1863 if (mLastScrolledFocus != null) { 1864 mLastScrolledFocus.clear(); 1865 } 1866 mScrollY = mCurScrollY = 0; 1867 if (mView instanceof RootViewSurfaceTaker) { 1868 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1869 } 1870 if (mScroller != null) { 1871 mScroller.abortAnimation(); 1872 } 1873 // Our surface is gone 1874 if (mAttachInfo.mHardwareRenderer != null && 1875 mAttachInfo.mHardwareRenderer.isEnabled()) { 1876 mAttachInfo.mHardwareRenderer.destroy(); 1877 } 1878 } else if ((surfaceGenerationId != mSurface.getGenerationId() 1879 || surfaceSizeChanged) 1880 && mSurfaceHolder == null 1881 && mAttachInfo.mHardwareRenderer != null) { 1882 mFullRedrawNeeded = true; 1883 try { 1884 // Need to do updateSurface (which leads to CanvasContext::setSurface and 1885 // re-create the EGLSurface) if either the Surface changed (as indicated by 1886 // generation id), or WindowManager changed the surface size. The latter is 1887 // because on some chips, changing the consumer side's BufferQueue size may 1888 // not take effect immediately unless we create a new EGLSurface. 1889 // Note that frame size change doesn't always imply surface size change (eg. 1890 // drag resizing uses fullscreen surface), need to check surfaceSizeChanged 1891 // flag from WindowManager. 1892 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1893 } catch (OutOfResourcesException e) { 1894 handleOutOfResourcesException(e); 1895 return; 1896 } 1897 } 1898 1899 final boolean freeformResizing = (relayoutResult 1900 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_FREEFORM) != 0; 1901 final boolean dockedResizing = (relayoutResult 1902 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_DOCKED) != 0; 1903 final boolean dragResizing = freeformResizing || dockedResizing; 1904 if (mDragResizing != dragResizing) { 1905 if (dragResizing) { 1906 mResizeMode = freeformResizing 1907 ? RESIZE_MODE_FREEFORM 1908 : RESIZE_MODE_DOCKED_DIVIDER; 1909 startDragResizing(mPendingBackDropFrame, 1910 mWinFrame.equals(mPendingBackDropFrame), mPendingVisibleInsets, 1911 mPendingStableInsets, mResizeMode); 1912 } else { 1913 // We shouldn't come here, but if we come we should end the resize. 1914 endDragResizing(); 1915 } 1916 } 1917 if (!USE_MT_RENDERER) { 1918 if (dragResizing) { 1919 mCanvasOffsetX = mWinFrame.left; 1920 mCanvasOffsetY = mWinFrame.top; 1921 } else { 1922 mCanvasOffsetX = mCanvasOffsetY = 0; 1923 } 1924 } 1925 } catch (RemoteException e) { 1926 } 1927 1928 if (DEBUG_ORIENTATION) Log.v( 1929 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1930 1931 mAttachInfo.mWindowLeft = frame.left; 1932 mAttachInfo.mWindowTop = frame.top; 1933 1934 // !!FIXME!! This next section handles the case where we did not get the 1935 // window size we asked for. We should avoid this by getting a maximum size from 1936 // the window session beforehand. 1937 if (mWidth != frame.width() || mHeight != frame.height()) { 1938 mWidth = frame.width(); 1939 mHeight = frame.height(); 1940 } 1941 1942 if (mSurfaceHolder != null) { 1943 // The app owns the surface; tell it about what is going on. 1944 if (mSurface.isValid()) { 1945 // XXX .copyFrom() doesn't work! 1946 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1947 mSurfaceHolder.mSurface = mSurface; 1948 } 1949 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1950 mSurfaceHolder.mSurfaceLock.unlock(); 1951 if (mSurface.isValid()) { 1952 if (!hadSurface) { 1953 mSurfaceHolder.ungetCallbacks(); 1954 1955 mIsCreating = true; 1956 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1957 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1958 if (callbacks != null) { 1959 for (SurfaceHolder.Callback c : callbacks) { 1960 c.surfaceCreated(mSurfaceHolder); 1961 } 1962 } 1963 surfaceChanged = true; 1964 } 1965 if (surfaceChanged || surfaceGenerationId != mSurface.getGenerationId()) { 1966 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1967 lp.format, mWidth, mHeight); 1968 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1969 if (callbacks != null) { 1970 for (SurfaceHolder.Callback c : callbacks) { 1971 c.surfaceChanged(mSurfaceHolder, lp.format, 1972 mWidth, mHeight); 1973 } 1974 } 1975 } 1976 mIsCreating = false; 1977 } else if (hadSurface) { 1978 mSurfaceHolder.ungetCallbacks(); 1979 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1980 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1981 if (callbacks != null) { 1982 for (SurfaceHolder.Callback c : callbacks) { 1983 c.surfaceDestroyed(mSurfaceHolder); 1984 } 1985 } 1986 mSurfaceHolder.mSurfaceLock.lock(); 1987 try { 1988 mSurfaceHolder.mSurface = new Surface(); 1989 } finally { 1990 mSurfaceHolder.mSurfaceLock.unlock(); 1991 } 1992 } 1993 } 1994 1995 final ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 1996 if (hardwareRenderer != null && hardwareRenderer.isEnabled()) { 1997 if (hwInitialized 1998 || mWidth != hardwareRenderer.getWidth() 1999 || mHeight != hardwareRenderer.getHeight() 2000 || mNeedsHwRendererSetup) { 2001 hardwareRenderer.setup(mWidth, mHeight, mAttachInfo, 2002 mWindowAttributes.surfaceInsets); 2003 mNeedsHwRendererSetup = false; 2004 } 2005 } 2006 2007 if (!mStopped || mReportNextDraw) { 2008 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 2009 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 2010 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 2011 || mHeight != host.getMeasuredHeight() || contentInsetsChanged || 2012 updatedConfiguration) { 2013 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 2014 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 2015 2016 if (DEBUG_LAYOUT) Log.v(mTag, "Ooops, something changed! mWidth=" 2017 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 2018 + " mHeight=" + mHeight 2019 + " measuredHeight=" + host.getMeasuredHeight() 2020 + " coveredInsetsChanged=" + contentInsetsChanged); 2021 2022 // Ask host how big it wants to be 2023 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 2024 2025 // Implementation of weights from WindowManager.LayoutParams 2026 // We just grow the dimensions as needed and re-measure if 2027 // needs be 2028 int width = host.getMeasuredWidth(); 2029 int height = host.getMeasuredHeight(); 2030 boolean measureAgain = false; 2031 2032 if (lp.horizontalWeight > 0.0f) { 2033 width += (int) ((mWidth - width) * lp.horizontalWeight); 2034 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 2035 MeasureSpec.EXACTLY); 2036 measureAgain = true; 2037 } 2038 if (lp.verticalWeight > 0.0f) { 2039 height += (int) ((mHeight - height) * lp.verticalWeight); 2040 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 2041 MeasureSpec.EXACTLY); 2042 measureAgain = true; 2043 } 2044 2045 if (measureAgain) { 2046 if (DEBUG_LAYOUT) Log.v(mTag, 2047 "And hey let's measure once more: width=" + width 2048 + " height=" + height); 2049 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 2050 } 2051 2052 layoutRequested = true; 2053 } 2054 } 2055 } else { 2056 // Not the first pass and no window/insets/visibility change but the window 2057 // may have moved and we need check that and if so to update the left and right 2058 // in the attach info. We translate only the window frame since on window move 2059 // the window manager tells us only for the new frame but the insets are the 2060 // same and we do not want to translate them more than once. 2061 maybeHandleWindowMove(frame); 2062 } 2063 2064 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 2065 boolean triggerGlobalLayoutListener = didLayout 2066 || mAttachInfo.mRecomputeGlobalAttributes; 2067 if (didLayout) { 2068 performLayout(lp, mWidth, mHeight); 2069 2070 // By this point all views have been sized and positioned 2071 // We can compute the transparent area 2072 2073 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 2074 // start out transparent 2075 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 2076 host.getLocationInWindow(mTmpLocation); 2077 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 2078 mTmpLocation[0] + host.mRight - host.mLeft, 2079 mTmpLocation[1] + host.mBottom - host.mTop); 2080 2081 host.gatherTransparentRegion(mTransparentRegion); 2082 if (mTranslator != null) { 2083 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 2084 } 2085 2086 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 2087 mPreviousTransparentRegion.set(mTransparentRegion); 2088 mFullRedrawNeeded = true; 2089 // reconfigure window manager 2090 try { 2091 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 2092 } catch (RemoteException e) { 2093 } 2094 } 2095 } 2096 2097 if (DBG) { 2098 System.out.println("======================================"); 2099 System.out.println("performTraversals -- after setFrame"); 2100 host.debug(); 2101 } 2102 } 2103 2104 if (triggerGlobalLayoutListener) { 2105 mAttachInfo.mRecomputeGlobalAttributes = false; 2106 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 2107 } 2108 2109 if (computesInternalInsets) { 2110 // Clear the original insets. 2111 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 2112 insets.reset(); 2113 2114 // Compute new insets in place. 2115 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 2116 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 2117 2118 // Tell the window manager. 2119 if (insetsPending || !mLastGivenInsets.equals(insets)) { 2120 mLastGivenInsets.set(insets); 2121 2122 // Translate insets to screen coordinates if needed. 2123 final Rect contentInsets; 2124 final Rect visibleInsets; 2125 final Region touchableRegion; 2126 if (mTranslator != null) { 2127 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 2128 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 2129 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 2130 } else { 2131 contentInsets = insets.contentInsets; 2132 visibleInsets = insets.visibleInsets; 2133 touchableRegion = insets.touchableRegion; 2134 } 2135 2136 try { 2137 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 2138 contentInsets, visibleInsets, touchableRegion); 2139 } catch (RemoteException e) { 2140 } 2141 } 2142 } 2143 2144 if (mFirst) { 2145 // handle first focus request 2146 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: mView.hasFocus()=" 2147 + mView.hasFocus()); 2148 if (mView != null) { 2149 if (!mView.hasFocus()) { 2150 mView.requestFocus(View.FOCUS_FORWARD); 2151 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: requested focused view=" 2152 + mView.findFocus()); 2153 } else { 2154 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: existing focused view=" 2155 + mView.findFocus()); 2156 } 2157 } 2158 } 2159 2160 final boolean changedVisibility = (viewVisibilityChanged || mFirst) && isViewVisible; 2161 final boolean hasWindowFocus = mAttachInfo.mHasWindowFocus && isViewVisible; 2162 final boolean regainedFocus = hasWindowFocus && mLostWindowFocus; 2163 if (regainedFocus) { 2164 mLostWindowFocus = false; 2165 } else if (!hasWindowFocus && mHadWindowFocus) { 2166 mLostWindowFocus = true; 2167 } 2168 2169 if (changedVisibility || regainedFocus) { 2170 host.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2171 } 2172 2173 mFirst = false; 2174 mWillDrawSoon = false; 2175 mNewSurfaceNeeded = false; 2176 mActivityRelaunched = false; 2177 mViewVisibility = viewVisibility; 2178 mHadWindowFocus = hasWindowFocus; 2179 2180 if (hasWindowFocus && !isInLocalFocusMode()) { 2181 final boolean imTarget = WindowManager.LayoutParams 2182 .mayUseInputMethod(mWindowAttributes.flags); 2183 if (imTarget != mLastWasImTarget) { 2184 mLastWasImTarget = imTarget; 2185 InputMethodManager imm = InputMethodManager.peekInstance(); 2186 if (imm != null && imTarget) { 2187 imm.onPreWindowFocus(mView, hasWindowFocus); 2188 imm.onPostWindowFocus(mView, mView.findFocus(), 2189 mWindowAttributes.softInputMode, 2190 !mHasHadWindowFocus, mWindowAttributes.flags); 2191 } 2192 } 2193 } 2194 2195 // Remember if we must report the next draw. 2196 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 2197 mReportNextDraw = true; 2198 } 2199 2200 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || !isViewVisible; 2201 2202 if (!cancelDraw && !newSurface) { 2203 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2204 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2205 mPendingTransitions.get(i).startChangingAnimations(); 2206 } 2207 mPendingTransitions.clear(); 2208 } 2209 2210 performDraw(); 2211 } else { 2212 if (isViewVisible) { 2213 // Try again 2214 scheduleTraversals(); 2215 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2216 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2217 mPendingTransitions.get(i).endChangingAnimations(); 2218 } 2219 mPendingTransitions.clear(); 2220 } 2221 } 2222 2223 mIsInTraversal = false; 2224 } 2225 2226 private void maybeHandleWindowMove(Rect frame) { 2227 2228 // TODO: Well, we are checking whether the frame has changed similarly 2229 // to how this is done for the insets. This is however incorrect since 2230 // the insets and the frame are translated. For example, the old frame 2231 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 2232 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 2233 // true since we are comparing a not translated value to a translated one. 2234 // This scenario is rare but we may want to fix that. 2235 2236 final boolean windowMoved = mAttachInfo.mWindowLeft != frame.left 2237 || mAttachInfo.mWindowTop != frame.top; 2238 if (windowMoved) { 2239 if (mTranslator != null) { 2240 mTranslator.translateRectInScreenToAppWinFrame(frame); 2241 } 2242 mAttachInfo.mWindowLeft = frame.left; 2243 mAttachInfo.mWindowTop = frame.top; 2244 } 2245 if (windowMoved || mAttachInfo.mNeedsUpdateLightCenter) { 2246 // Update the light position for the new offsets. 2247 if (mAttachInfo.mHardwareRenderer != null) { 2248 mAttachInfo.mHardwareRenderer.setLightCenter(mAttachInfo); 2249 } 2250 mAttachInfo.mNeedsUpdateLightCenter = false; 2251 } 2252 } 2253 2254 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2255 Log.e(mTag, "OutOfResourcesException initializing HW surface", e); 2256 try { 2257 if (!mWindowSession.outOfMemory(mWindow) && 2258 Process.myUid() != Process.SYSTEM_UID) { 2259 Slog.w(mTag, "No processes killed for memory; killing self"); 2260 Process.killProcess(Process.myPid()); 2261 } 2262 } catch (RemoteException ex) { 2263 } 2264 mLayoutRequested = true; // ask wm for a new surface next time. 2265 } 2266 2267 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2268 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2269 try { 2270 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2271 } finally { 2272 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2273 } 2274 } 2275 2276 /** 2277 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2278 * is currently undergoing a layout pass. 2279 * 2280 * @return whether the view hierarchy is currently undergoing a layout pass 2281 */ 2282 boolean isInLayout() { 2283 return mInLayout; 2284 } 2285 2286 /** 2287 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2288 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2289 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2290 * all children in that container hierarchy are measured and laid out at the end of the layout 2291 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2292 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2293 * we check all of those views to see if any still have pending layout requests, which 2294 * indicates that they were not correctly handled by their container hierarchy. If that is 2295 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2296 * to blank containers, and force a second request/measure/layout pass in this frame. If 2297 * more requestLayout() calls are received during that second layout pass, we post those 2298 * requests to the next frame to avoid possible infinite loops. 2299 * 2300 * <p>The return value from this method indicates whether the request should proceed 2301 * (if it is a request during the first layout pass) or should be skipped and posted to the 2302 * next frame (if it is a request during the second layout pass).</p> 2303 * 2304 * @param view the view that requested the layout. 2305 * 2306 * @return true if request should proceed, false otherwise. 2307 */ 2308 boolean requestLayoutDuringLayout(final View view) { 2309 if (view.mParent == null || view.mAttachInfo == null) { 2310 // Would not normally trigger another layout, so just let it pass through as usual 2311 return true; 2312 } 2313 if (!mLayoutRequesters.contains(view)) { 2314 mLayoutRequesters.add(view); 2315 } 2316 if (!mHandlingLayoutInLayoutRequest) { 2317 // Let the request proceed normally; it will be processed in a second layout pass 2318 // if necessary 2319 return true; 2320 } else { 2321 // Don't let the request proceed during the second layout pass. 2322 // It will post to the next frame instead. 2323 return false; 2324 } 2325 } 2326 2327 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2328 int desiredWindowHeight) { 2329 mLayoutRequested = false; 2330 mScrollMayChange = true; 2331 mInLayout = true; 2332 2333 final View host = mView; 2334 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2335 Log.v(mTag, "Laying out " + host + " to (" + 2336 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2337 } 2338 2339 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2340 try { 2341 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2342 2343 mInLayout = false; 2344 int numViewsRequestingLayout = mLayoutRequesters.size(); 2345 if (numViewsRequestingLayout > 0) { 2346 // requestLayout() was called during layout. 2347 // If no layout-request flags are set on the requesting views, there is no problem. 2348 // If some requests are still pending, then we need to clear those flags and do 2349 // a full request/measure/layout pass to handle this situation. 2350 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2351 false); 2352 if (validLayoutRequesters != null) { 2353 // Set this flag to indicate that any further requests are happening during 2354 // the second pass, which may result in posting those requests to the next 2355 // frame instead 2356 mHandlingLayoutInLayoutRequest = true; 2357 2358 // Process fresh layout requests, then measure and layout 2359 int numValidRequests = validLayoutRequesters.size(); 2360 for (int i = 0; i < numValidRequests; ++i) { 2361 final View view = validLayoutRequesters.get(i); 2362 Log.w("View", "requestLayout() improperly called by " + view + 2363 " during layout: running second layout pass"); 2364 view.requestLayout(); 2365 } 2366 measureHierarchy(host, lp, mView.getContext().getResources(), 2367 desiredWindowWidth, desiredWindowHeight); 2368 mInLayout = true; 2369 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2370 2371 mHandlingLayoutInLayoutRequest = false; 2372 2373 // Check the valid requests again, this time without checking/clearing the 2374 // layout flags, since requests happening during the second pass get noop'd 2375 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2376 if (validLayoutRequesters != null) { 2377 final ArrayList<View> finalRequesters = validLayoutRequesters; 2378 // Post second-pass requests to the next frame 2379 getRunQueue().post(new Runnable() { 2380 @Override 2381 public void run() { 2382 int numValidRequests = finalRequesters.size(); 2383 for (int i = 0; i < numValidRequests; ++i) { 2384 final View view = finalRequesters.get(i); 2385 Log.w("View", "requestLayout() improperly called by " + view + 2386 " during second layout pass: posting in next frame"); 2387 view.requestLayout(); 2388 } 2389 } 2390 }); 2391 } 2392 } 2393 2394 } 2395 } finally { 2396 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2397 } 2398 mInLayout = false; 2399 } 2400 2401 /** 2402 * This method is called during layout when there have been calls to requestLayout() during 2403 * layout. It walks through the list of views that requested layout to determine which ones 2404 * still need it, based on visibility in the hierarchy and whether they have already been 2405 * handled (as is usually the case with ListView children). 2406 * 2407 * @param layoutRequesters The list of views that requested layout during layout 2408 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2409 * If so, the FORCE_LAYOUT flag was not set on requesters. 2410 * @return A list of the actual views that still need to be laid out. 2411 */ 2412 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2413 boolean secondLayoutRequests) { 2414 2415 int numViewsRequestingLayout = layoutRequesters.size(); 2416 ArrayList<View> validLayoutRequesters = null; 2417 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2418 View view = layoutRequesters.get(i); 2419 if (view != null && view.mAttachInfo != null && view.mParent != null && 2420 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2421 View.PFLAG_FORCE_LAYOUT)) { 2422 boolean gone = false; 2423 View parent = view; 2424 // Only trigger new requests for views in a non-GONE hierarchy 2425 while (parent != null) { 2426 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2427 gone = true; 2428 break; 2429 } 2430 if (parent.mParent instanceof View) { 2431 parent = (View) parent.mParent; 2432 } else { 2433 parent = null; 2434 } 2435 } 2436 if (!gone) { 2437 if (validLayoutRequesters == null) { 2438 validLayoutRequesters = new ArrayList<View>(); 2439 } 2440 validLayoutRequesters.add(view); 2441 } 2442 } 2443 } 2444 if (!secondLayoutRequests) { 2445 // If we're checking the layout flags, then we need to clean them up also 2446 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2447 View view = layoutRequesters.get(i); 2448 while (view != null && 2449 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2450 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2451 if (view.mParent instanceof View) { 2452 view = (View) view.mParent; 2453 } else { 2454 view = null; 2455 } 2456 } 2457 } 2458 } 2459 layoutRequesters.clear(); 2460 return validLayoutRequesters; 2461 } 2462 2463 @Override 2464 public void requestTransparentRegion(View child) { 2465 // the test below should not fail unless someone is messing with us 2466 checkThread(); 2467 if (mView == child) { 2468 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2469 // Need to make sure we re-evaluate the window attributes next 2470 // time around, to ensure the window has the correct format. 2471 mWindowAttributesChanged = true; 2472 mWindowAttributesChangesFlag = 0; 2473 requestLayout(); 2474 } 2475 } 2476 2477 /** 2478 * Figures out the measure spec for the root view in a window based on it's 2479 * layout params. 2480 * 2481 * @param windowSize 2482 * The available width or height of the window 2483 * 2484 * @param rootDimension 2485 * The layout params for one dimension (width or height) of the 2486 * window. 2487 * 2488 * @return The measure spec to use to measure the root view. 2489 */ 2490 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2491 int measureSpec; 2492 switch (rootDimension) { 2493 2494 case ViewGroup.LayoutParams.MATCH_PARENT: 2495 // Window can't resize. Force root view to be windowSize. 2496 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2497 break; 2498 case ViewGroup.LayoutParams.WRAP_CONTENT: 2499 // Window can resize. Set max size for root view. 2500 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2501 break; 2502 default: 2503 // Window wants to be an exact size. Force root view to be that size. 2504 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2505 break; 2506 } 2507 return measureSpec; 2508 } 2509 2510 int mHardwareXOffset; 2511 int mHardwareYOffset; 2512 2513 @Override 2514 public void onHardwarePreDraw(DisplayListCanvas canvas) { 2515 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2516 } 2517 2518 @Override 2519 public void onHardwarePostDraw(DisplayListCanvas canvas) { 2520 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2521 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 2522 mWindowCallbacks.get(i).onPostDraw(canvas); 2523 } 2524 } 2525 2526 /** 2527 * @hide 2528 */ 2529 void outputDisplayList(View view) { 2530 view.mRenderNode.output(); 2531 if (mAttachInfo.mHardwareRenderer != null) { 2532 ((ThreadedRenderer)mAttachInfo.mHardwareRenderer).serializeDisplayListTree(); 2533 } 2534 } 2535 2536 /** 2537 * @see #PROPERTY_PROFILE_RENDERING 2538 */ 2539 private void profileRendering(boolean enabled) { 2540 if (mProfileRendering) { 2541 mRenderProfilingEnabled = enabled; 2542 2543 if (mRenderProfiler != null) { 2544 mChoreographer.removeFrameCallback(mRenderProfiler); 2545 } 2546 if (mRenderProfilingEnabled) { 2547 if (mRenderProfiler == null) { 2548 mRenderProfiler = new Choreographer.FrameCallback() { 2549 @Override 2550 public void doFrame(long frameTimeNanos) { 2551 mDirty.set(0, 0, mWidth, mHeight); 2552 scheduleTraversals(); 2553 if (mRenderProfilingEnabled) { 2554 mChoreographer.postFrameCallback(mRenderProfiler); 2555 } 2556 } 2557 }; 2558 } 2559 mChoreographer.postFrameCallback(mRenderProfiler); 2560 } else { 2561 mRenderProfiler = null; 2562 } 2563 } 2564 } 2565 2566 /** 2567 * Called from draw() when DEBUG_FPS is enabled 2568 */ 2569 private void trackFPS() { 2570 // Tracks frames per second drawn. First value in a series of draws may be bogus 2571 // because it down not account for the intervening idle time 2572 long nowTime = System.currentTimeMillis(); 2573 if (mFpsStartTime < 0) { 2574 mFpsStartTime = mFpsPrevTime = nowTime; 2575 mFpsNumFrames = 0; 2576 } else { 2577 ++mFpsNumFrames; 2578 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2579 long frameTime = nowTime - mFpsPrevTime; 2580 long totalTime = nowTime - mFpsStartTime; 2581 Log.v(mTag, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2582 mFpsPrevTime = nowTime; 2583 if (totalTime > 1000) { 2584 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2585 Log.v(mTag, "0x" + thisHash + "\tFPS:\t" + fps); 2586 mFpsStartTime = nowTime; 2587 mFpsNumFrames = 0; 2588 } 2589 } 2590 } 2591 2592 private void performDraw() { 2593 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2594 return; 2595 } 2596 2597 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2598 mFullRedrawNeeded = false; 2599 2600 mIsDrawing = true; 2601 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2602 try { 2603 draw(fullRedrawNeeded); 2604 } finally { 2605 mIsDrawing = false; 2606 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2607 } 2608 2609 // For whatever reason we didn't create a HardwareRenderer, end any 2610 // hardware animations that are now dangling 2611 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2612 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2613 for (int i = 0; i < count; i++) { 2614 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2615 } 2616 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2617 } 2618 2619 if (mReportNextDraw) { 2620 mReportNextDraw = false; 2621 2622 // if we're using multi-thread renderer, wait for the window frame draws 2623 if (mWindowDrawCountDown != null) { 2624 try { 2625 mWindowDrawCountDown.await(); 2626 } catch (InterruptedException e) { 2627 Log.e(mTag, "Window redraw count down interruped!"); 2628 } 2629 mWindowDrawCountDown = null; 2630 } 2631 2632 if (mAttachInfo.mHardwareRenderer != null) { 2633 mAttachInfo.mHardwareRenderer.fence(); 2634 mAttachInfo.mHardwareRenderer.setStopped(mStopped); 2635 } 2636 2637 if (LOCAL_LOGV) { 2638 Log.v(mTag, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2639 } 2640 if (mSurfaceHolder != null && mSurface.isValid()) { 2641 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2642 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2643 if (callbacks != null) { 2644 for (SurfaceHolder.Callback c : callbacks) { 2645 if (c instanceof SurfaceHolder.Callback2) { 2646 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded(mSurfaceHolder); 2647 } 2648 } 2649 } 2650 } 2651 try { 2652 mWindowSession.finishDrawing(mWindow); 2653 } catch (RemoteException e) { 2654 } 2655 } 2656 } 2657 2658 private void draw(boolean fullRedrawNeeded) { 2659 Surface surface = mSurface; 2660 if (!surface.isValid()) { 2661 return; 2662 } 2663 2664 if (DEBUG_FPS) { 2665 trackFPS(); 2666 } 2667 2668 if (!sFirstDrawComplete) { 2669 synchronized (sFirstDrawHandlers) { 2670 sFirstDrawComplete = true; 2671 final int count = sFirstDrawHandlers.size(); 2672 for (int i = 0; i< count; i++) { 2673 mHandler.post(sFirstDrawHandlers.get(i)); 2674 } 2675 } 2676 } 2677 2678 scrollToRectOrFocus(null, false); 2679 2680 if (mAttachInfo.mViewScrollChanged) { 2681 mAttachInfo.mViewScrollChanged = false; 2682 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2683 } 2684 2685 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2686 final int curScrollY; 2687 if (animating) { 2688 curScrollY = mScroller.getCurrY(); 2689 } else { 2690 curScrollY = mScrollY; 2691 } 2692 if (mCurScrollY != curScrollY) { 2693 mCurScrollY = curScrollY; 2694 fullRedrawNeeded = true; 2695 if (mView instanceof RootViewSurfaceTaker) { 2696 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2697 } 2698 } 2699 2700 final float appScale = mAttachInfo.mApplicationScale; 2701 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2702 2703 int resizeAlpha = 0; 2704 2705 final Rect dirty = mDirty; 2706 if (mSurfaceHolder != null) { 2707 // The app owns the surface, we won't draw. 2708 dirty.setEmpty(); 2709 if (animating && mScroller != null) { 2710 mScroller.abortAnimation(); 2711 } 2712 return; 2713 } 2714 2715 if (fullRedrawNeeded) { 2716 mAttachInfo.mIgnoreDirtyState = true; 2717 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2718 } 2719 2720 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2721 Log.v(mTag, "Draw " + mView + "/" 2722 + mWindowAttributes.getTitle() 2723 + ": dirty={" + dirty.left + "," + dirty.top 2724 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2725 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2726 appScale + ", width=" + mWidth + ", height=" + mHeight); 2727 } 2728 2729 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2730 2731 int xOffset = -mCanvasOffsetX; 2732 int yOffset = -mCanvasOffsetY + curScrollY; 2733 final WindowManager.LayoutParams params = mWindowAttributes; 2734 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2735 if (surfaceInsets != null) { 2736 xOffset -= surfaceInsets.left; 2737 yOffset -= surfaceInsets.top; 2738 2739 // Offset dirty rect for surface insets. 2740 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2741 } 2742 2743 boolean accessibilityFocusDirty = false; 2744 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2745 if (drawable != null) { 2746 final Rect bounds = mAttachInfo.mTmpInvalRect; 2747 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2748 if (!hasFocus) { 2749 bounds.setEmpty(); 2750 } 2751 if (!bounds.equals(drawable.getBounds())) { 2752 accessibilityFocusDirty = true; 2753 } 2754 } 2755 2756 mAttachInfo.mDrawingTime = 2757 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2758 2759 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2760 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2761 // If accessibility focus moved, always invalidate the root. 2762 boolean invalidateRoot = accessibilityFocusDirty || mInvalidateRootRequested; 2763 mInvalidateRootRequested = false; 2764 2765 // Draw with hardware renderer. 2766 mIsAnimating = false; 2767 2768 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2769 mHardwareYOffset = yOffset; 2770 mHardwareXOffset = xOffset; 2771 invalidateRoot = true; 2772 } 2773 2774 if (invalidateRoot) { 2775 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2776 } 2777 2778 dirty.setEmpty(); 2779 2780 // Stage the content drawn size now. It will be transferred to the renderer 2781 // shortly before the draw commands get send to the renderer. 2782 final boolean updated = updateContentDrawBounds(); 2783 2784 if (mReportNextDraw) { 2785 // report next draw overrides setStopped() 2786 // This value is re-sync'd to the value of mStopped 2787 // in the handling of mReportNextDraw post-draw. 2788 mAttachInfo.mHardwareRenderer.setStopped(false); 2789 } 2790 2791 if (updated) { 2792 requestDrawWindow(); 2793 } 2794 2795 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2796 } else { 2797 // If we get here with a disabled & requested hardware renderer, something went 2798 // wrong (an invalidate posted right before we destroyed the hardware surface 2799 // for instance) so we should just bail out. Locking the surface with software 2800 // rendering at this point would lock it forever and prevent hardware renderer 2801 // from doing its job when it comes back. 2802 // Before we request a new frame we must however attempt to reinitiliaze the 2803 // hardware renderer if it's in requested state. This would happen after an 2804 // eglTerminate() for instance. 2805 if (mAttachInfo.mHardwareRenderer != null && 2806 !mAttachInfo.mHardwareRenderer.isEnabled() && 2807 mAttachInfo.mHardwareRenderer.isRequested()) { 2808 2809 try { 2810 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2811 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 2812 } catch (OutOfResourcesException e) { 2813 handleOutOfResourcesException(e); 2814 return; 2815 } 2816 2817 mFullRedrawNeeded = true; 2818 scheduleTraversals(); 2819 return; 2820 } 2821 2822 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2823 return; 2824 } 2825 } 2826 } 2827 2828 if (animating) { 2829 mFullRedrawNeeded = true; 2830 scheduleTraversals(); 2831 } 2832 } 2833 2834 /** 2835 * @return true if drawing was successful, false if an error occurred 2836 */ 2837 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2838 boolean scalingRequired, Rect dirty) { 2839 2840 // Draw with software renderer. 2841 final Canvas canvas; 2842 try { 2843 final int left = dirty.left; 2844 final int top = dirty.top; 2845 final int right = dirty.right; 2846 final int bottom = dirty.bottom; 2847 2848 canvas = mSurface.lockCanvas(dirty); 2849 2850 // The dirty rectangle can be modified by Surface.lockCanvas() 2851 //noinspection ConstantConditions 2852 if (left != dirty.left || top != dirty.top || right != dirty.right 2853 || bottom != dirty.bottom) { 2854 attachInfo.mIgnoreDirtyState = true; 2855 } 2856 2857 // TODO: Do this in native 2858 canvas.setDensity(mDensity); 2859 } catch (Surface.OutOfResourcesException e) { 2860 handleOutOfResourcesException(e); 2861 return false; 2862 } catch (IllegalArgumentException e) { 2863 Log.e(mTag, "Could not lock surface", e); 2864 // Don't assume this is due to out of memory, it could be 2865 // something else, and if it is something else then we could 2866 // kill stuff (or ourself) for no reason. 2867 mLayoutRequested = true; // ask wm for a new surface next time. 2868 return false; 2869 } 2870 2871 try { 2872 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2873 Log.v(mTag, "Surface " + surface + " drawing to bitmap w=" 2874 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2875 //canvas.drawARGB(255, 255, 0, 0); 2876 } 2877 2878 // If this bitmap's format includes an alpha channel, we 2879 // need to clear it before drawing so that the child will 2880 // properly re-composite its drawing on a transparent 2881 // background. This automatically respects the clip/dirty region 2882 // or 2883 // If we are applying an offset, we need to clear the area 2884 // where the offset doesn't appear to avoid having garbage 2885 // left in the blank areas. 2886 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2887 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2888 } 2889 2890 dirty.setEmpty(); 2891 mIsAnimating = false; 2892 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2893 2894 if (DEBUG_DRAW) { 2895 Context cxt = mView.getContext(); 2896 Log.i(mTag, "Drawing: package:" + cxt.getPackageName() + 2897 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2898 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2899 } 2900 try { 2901 canvas.translate(-xoff, -yoff); 2902 if (mTranslator != null) { 2903 mTranslator.translateCanvas(canvas); 2904 } 2905 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2906 attachInfo.mSetIgnoreDirtyState = false; 2907 2908 mView.draw(canvas); 2909 2910 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2911 } finally { 2912 if (!attachInfo.mSetIgnoreDirtyState) { 2913 // Only clear the flag if it was not set during the mView.draw() call 2914 attachInfo.mIgnoreDirtyState = false; 2915 } 2916 } 2917 } finally { 2918 try { 2919 surface.unlockCanvasAndPost(canvas); 2920 } catch (IllegalArgumentException e) { 2921 Log.e(mTag, "Could not unlock surface", e); 2922 mLayoutRequested = true; // ask wm for a new surface next time. 2923 //noinspection ReturnInsideFinallyBlock 2924 return false; 2925 } 2926 2927 if (LOCAL_LOGV) { 2928 Log.v(mTag, "Surface " + surface + " unlockCanvasAndPost"); 2929 } 2930 } 2931 return true; 2932 } 2933 2934 /** 2935 * We want to draw a highlight around the current accessibility focused. 2936 * Since adding a style for all possible view is not a viable option we 2937 * have this specialized drawing method. 2938 * 2939 * Note: We are doing this here to be able to draw the highlight for 2940 * virtual views in addition to real ones. 2941 * 2942 * @param canvas The canvas on which to draw. 2943 */ 2944 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2945 final Rect bounds = mAttachInfo.mTmpInvalRect; 2946 if (getAccessibilityFocusedRect(bounds)) { 2947 final Drawable drawable = getAccessibilityFocusedDrawable(); 2948 if (drawable != null) { 2949 drawable.setBounds(bounds); 2950 drawable.draw(canvas); 2951 } 2952 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2953 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2954 } 2955 } 2956 2957 private boolean getAccessibilityFocusedRect(Rect bounds) { 2958 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2959 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2960 return false; 2961 } 2962 2963 final View host = mAccessibilityFocusedHost; 2964 if (host == null || host.mAttachInfo == null) { 2965 return false; 2966 } 2967 2968 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2969 if (provider == null) { 2970 host.getBoundsOnScreen(bounds, true); 2971 } else if (mAccessibilityFocusedVirtualView != null) { 2972 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2973 } else { 2974 return false; 2975 } 2976 2977 // Transform the rect into window-relative coordinates. 2978 final AttachInfo attachInfo = mAttachInfo; 2979 bounds.offset(0, attachInfo.mViewRootImpl.mScrollY); 2980 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2981 if (!bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, 2982 attachInfo.mViewRootImpl.mHeight)) { 2983 // If no intersection, set bounds to empty. 2984 bounds.setEmpty(); 2985 } 2986 return !bounds.isEmpty(); 2987 } 2988 2989 private Drawable getAccessibilityFocusedDrawable() { 2990 // Lazily load the accessibility focus drawable. 2991 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2992 final TypedValue value = new TypedValue(); 2993 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2994 R.attr.accessibilityFocusedDrawable, value, true); 2995 if (resolved) { 2996 mAttachInfo.mAccessibilityFocusDrawable = 2997 mView.mContext.getDrawable(value.resourceId); 2998 } 2999 } 3000 return mAttachInfo.mAccessibilityFocusDrawable; 3001 } 3002 3003 /** 3004 * Requests that the root render node is invalidated next time we perform a draw, such that 3005 * {@link WindowCallbacks#onPostDraw} gets called. 3006 */ 3007 public void requestInvalidateRootRenderNode() { 3008 mInvalidateRootRequested = true; 3009 } 3010 3011 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 3012 final Rect ci = mAttachInfo.mContentInsets; 3013 final Rect vi = mAttachInfo.mVisibleInsets; 3014 int scrollY = 0; 3015 boolean handled = false; 3016 3017 if (vi.left > ci.left || vi.top > ci.top 3018 || vi.right > ci.right || vi.bottom > ci.bottom) { 3019 // We'll assume that we aren't going to change the scroll 3020 // offset, since we want to avoid that unless it is actually 3021 // going to make the focus visible... otherwise we scroll 3022 // all over the place. 3023 scrollY = mScrollY; 3024 // We can be called for two different situations: during a draw, 3025 // to update the scroll position if the focus has changed (in which 3026 // case 'rectangle' is null), or in response to a 3027 // requestChildRectangleOnScreen() call (in which case 'rectangle' 3028 // is non-null and we just want to scroll to whatever that 3029 // rectangle is). 3030 final View focus = mView.findFocus(); 3031 if (focus == null) { 3032 return false; 3033 } 3034 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 3035 if (focus != lastScrolledFocus) { 3036 // If the focus has changed, then ignore any requests to scroll 3037 // to a rectangle; first we want to make sure the entire focus 3038 // view is visible. 3039 rectangle = null; 3040 } 3041 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Eval scroll: focus=" + focus 3042 + " rectangle=" + rectangle + " ci=" + ci 3043 + " vi=" + vi); 3044 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 3045 // Optimization: if the focus hasn't changed since last 3046 // time, and no layout has happened, then just leave things 3047 // as they are. 3048 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Keeping scroll y=" 3049 + mScrollY + " vi=" + vi.toShortString()); 3050 } else { 3051 // We need to determine if the currently focused view is 3052 // within the visible part of the window and, if not, apply 3053 // a pan so it can be seen. 3054 mLastScrolledFocus = new WeakReference<View>(focus); 3055 mScrollMayChange = false; 3056 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Need to scroll?"); 3057 // Try to find the rectangle from the focus view. 3058 if (focus.getGlobalVisibleRect(mVisRect, null)) { 3059 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Root w=" 3060 + mView.getWidth() + " h=" + mView.getHeight() 3061 + " ci=" + ci.toShortString() 3062 + " vi=" + vi.toShortString()); 3063 if (rectangle == null) { 3064 focus.getFocusedRect(mTempRect); 3065 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Focus " + focus 3066 + ": focusRect=" + mTempRect.toShortString()); 3067 if (mView instanceof ViewGroup) { 3068 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3069 focus, mTempRect); 3070 } 3071 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3072 "Focus in window: focusRect=" 3073 + mTempRect.toShortString() 3074 + " visRect=" + mVisRect.toShortString()); 3075 } else { 3076 mTempRect.set(rectangle); 3077 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3078 "Request scroll to rect: " 3079 + mTempRect.toShortString() 3080 + " visRect=" + mVisRect.toShortString()); 3081 } 3082 if (mTempRect.intersect(mVisRect)) { 3083 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3084 "Focus window visible rect: " 3085 + mTempRect.toShortString()); 3086 if (mTempRect.height() > 3087 (mView.getHeight()-vi.top-vi.bottom)) { 3088 // If the focus simply is not going to fit, then 3089 // best is probably just to leave things as-is. 3090 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3091 "Too tall; leaving scrollY=" + scrollY); 3092 } 3093 // Next, check whether top or bottom is covered based on the non-scrolled 3094 // position, and calculate new scrollY (or set it to 0). 3095 // We can't keep using mScrollY here. For example mScrollY is non-zero 3096 // due to IME, then IME goes away. The current value of mScrollY leaves top 3097 // and bottom both visible, but we still need to scroll it back to 0. 3098 else if (mTempRect.top < vi.top) { 3099 scrollY = mTempRect.top - vi.top; 3100 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3101 "Top covered; scrollY=" + scrollY); 3102 } else if (mTempRect.bottom > (mView.getHeight()-vi.bottom)) { 3103 scrollY = mTempRect.bottom - (mView.getHeight()-vi.bottom); 3104 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3105 "Bottom covered; scrollY=" + scrollY); 3106 } else { 3107 scrollY = 0; 3108 } 3109 handled = true; 3110 } 3111 } 3112 } 3113 } 3114 3115 if (scrollY != mScrollY) { 3116 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Pan scroll changed: old=" 3117 + mScrollY + " , new=" + scrollY); 3118 if (!immediate) { 3119 if (mScroller == null) { 3120 mScroller = new Scroller(mView.getContext()); 3121 } 3122 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 3123 } else if (mScroller != null) { 3124 mScroller.abortAnimation(); 3125 } 3126 mScrollY = scrollY; 3127 } 3128 3129 return handled; 3130 } 3131 3132 /** 3133 * @hide 3134 */ 3135 public View getAccessibilityFocusedHost() { 3136 return mAccessibilityFocusedHost; 3137 } 3138 3139 /** 3140 * @hide 3141 */ 3142 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 3143 return mAccessibilityFocusedVirtualView; 3144 } 3145 3146 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 3147 // If we have a virtual view with accessibility focus we need 3148 // to clear the focus and invalidate the virtual view bounds. 3149 if (mAccessibilityFocusedVirtualView != null) { 3150 3151 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 3152 View focusHost = mAccessibilityFocusedHost; 3153 3154 // Wipe the state of the current accessibility focus since 3155 // the call into the provider to clear accessibility focus 3156 // will fire an accessibility event which will end up calling 3157 // this method and we want to have clean state when this 3158 // invocation happens. 3159 mAccessibilityFocusedHost = null; 3160 mAccessibilityFocusedVirtualView = null; 3161 3162 // Clear accessibility focus on the host after clearing state since 3163 // this method may be reentrant. 3164 focusHost.clearAccessibilityFocusNoCallbacks( 3165 AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS); 3166 3167 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 3168 if (provider != null) { 3169 // Invalidate the area of the cleared accessibility focus. 3170 focusNode.getBoundsInParent(mTempRect); 3171 focusHost.invalidate(mTempRect); 3172 // Clear accessibility focus in the virtual node. 3173 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 3174 focusNode.getSourceNodeId()); 3175 provider.performAction(virtualNodeId, 3176 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 3177 } 3178 focusNode.recycle(); 3179 } 3180 if ((mAccessibilityFocusedHost != null) && (mAccessibilityFocusedHost != view)) { 3181 // Clear accessibility focus in the view. 3182 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks( 3183 AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS); 3184 } 3185 3186 // Set the new focus host and node. 3187 mAccessibilityFocusedHost = view; 3188 mAccessibilityFocusedVirtualView = node; 3189 3190 if (mAttachInfo.mHardwareRenderer != null) { 3191 mAttachInfo.mHardwareRenderer.invalidateRoot(); 3192 } 3193 } 3194 3195 @Override 3196 public void requestChildFocus(View child, View focused) { 3197 if (DEBUG_INPUT_RESIZE) { 3198 Log.v(mTag, "Request child focus: focus now " + focused); 3199 } 3200 checkThread(); 3201 scheduleTraversals(); 3202 } 3203 3204 @Override 3205 public void clearChildFocus(View child) { 3206 if (DEBUG_INPUT_RESIZE) { 3207 Log.v(mTag, "Clearing child focus"); 3208 } 3209 checkThread(); 3210 scheduleTraversals(); 3211 } 3212 3213 @Override 3214 public ViewParent getParentForAccessibility() { 3215 return null; 3216 } 3217 3218 @Override 3219 public void focusableViewAvailable(View v) { 3220 checkThread(); 3221 if (mView != null) { 3222 if (!mView.hasFocus()) { 3223 v.requestFocus(); 3224 } else { 3225 // the one case where will transfer focus away from the current one 3226 // is if the current view is a view group that prefers to give focus 3227 // to its children first AND the view is a descendant of it. 3228 View focused = mView.findFocus(); 3229 if (focused instanceof ViewGroup) { 3230 ViewGroup group = (ViewGroup) focused; 3231 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3232 && isViewDescendantOf(v, focused)) { 3233 v.requestFocus(); 3234 } 3235 } 3236 } 3237 } 3238 } 3239 3240 @Override 3241 public void recomputeViewAttributes(View child) { 3242 checkThread(); 3243 if (mView == child) { 3244 mAttachInfo.mRecomputeGlobalAttributes = true; 3245 if (!mWillDrawSoon) { 3246 scheduleTraversals(); 3247 } 3248 } 3249 } 3250 3251 void dispatchDetachedFromWindow() { 3252 if (mView != null && mView.mAttachInfo != null) { 3253 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 3254 mView.dispatchDetachedFromWindow(); 3255 } 3256 3257 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 3258 mAccessibilityManager.removeAccessibilityStateChangeListener( 3259 mAccessibilityInteractionConnectionManager); 3260 mAccessibilityManager.removeHighTextContrastStateChangeListener( 3261 mHighContrastTextManager); 3262 removeSendWindowContentChangedCallback(); 3263 3264 destroyHardwareRenderer(); 3265 3266 setAccessibilityFocus(null, null); 3267 3268 mView.assignParent(null); 3269 mView = null; 3270 mAttachInfo.mRootView = null; 3271 3272 mSurface.release(); 3273 3274 if (mInputQueueCallback != null && mInputQueue != null) { 3275 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 3276 mInputQueue.dispose(); 3277 mInputQueueCallback = null; 3278 mInputQueue = null; 3279 } 3280 if (mInputEventReceiver != null) { 3281 mInputEventReceiver.dispose(); 3282 mInputEventReceiver = null; 3283 } 3284 try { 3285 mWindowSession.remove(mWindow); 3286 } catch (RemoteException e) { 3287 } 3288 3289 // Dispose the input channel after removing the window so the Window Manager 3290 // doesn't interpret the input channel being closed as an abnormal termination. 3291 if (mInputChannel != null) { 3292 mInputChannel.dispose(); 3293 mInputChannel = null; 3294 } 3295 3296 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3297 3298 unscheduleTraversals(); 3299 } 3300 3301 void updateConfiguration(Configuration config, boolean force) { 3302 if (DEBUG_CONFIGURATION) Log.v(mTag, 3303 "Applying new config to window " 3304 + mWindowAttributes.getTitle() 3305 + ": " + config); 3306 3307 CompatibilityInfo ci = mDisplay.getDisplayAdjustments().getCompatibilityInfo(); 3308 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3309 config = new Configuration(config); 3310 ci.applyToConfiguration(mNoncompatDensity, config); 3311 } 3312 3313 synchronized (sConfigCallbacks) { 3314 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3315 sConfigCallbacks.get(i).onConfigurationChanged(config); 3316 } 3317 } 3318 if (mView != null) { 3319 // At this point the resources have been updated to 3320 // have the most recent config, whatever that is. Use 3321 // the one in them which may be newer. 3322 final Resources localResources = mView.getResources(); 3323 config = localResources.getConfiguration(); 3324 if (force || mLastConfiguration.diff(config) != 0) { 3325 // Update the display with new DisplayAdjustments. 3326 mDisplay = ResourcesManager.getInstance().getAdjustedDisplay( 3327 mDisplay.getDisplayId(), localResources.getDisplayAdjustments()); 3328 3329 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3330 final int currentLayoutDirection = config.getLayoutDirection(); 3331 mLastConfiguration.setTo(config); 3332 if (lastLayoutDirection != currentLayoutDirection && 3333 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3334 mView.setLayoutDirection(currentLayoutDirection); 3335 } 3336 mView.dispatchConfigurationChanged(config); 3337 } 3338 } 3339 } 3340 3341 /** 3342 * Return true if child is an ancestor of parent, (or equal to the parent). 3343 */ 3344 public static boolean isViewDescendantOf(View child, View parent) { 3345 if (child == parent) { 3346 return true; 3347 } 3348 3349 final ViewParent theParent = child.getParent(); 3350 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3351 } 3352 3353 private static void forceLayout(View view) { 3354 view.forceLayout(); 3355 if (view instanceof ViewGroup) { 3356 ViewGroup group = (ViewGroup) view; 3357 final int count = group.getChildCount(); 3358 for (int i = 0; i < count; i++) { 3359 forceLayout(group.getChildAt(i)); 3360 } 3361 } 3362 } 3363 3364 private final static int MSG_INVALIDATE = 1; 3365 private final static int MSG_INVALIDATE_RECT = 2; 3366 private final static int MSG_DIE = 3; 3367 private final static int MSG_RESIZED = 4; 3368 private final static int MSG_RESIZED_REPORT = 5; 3369 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3370 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3371 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3372 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3373 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3374 private final static int MSG_CHECK_FOCUS = 13; 3375 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3376 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3377 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3378 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3379 private final static int MSG_UPDATE_CONFIGURATION = 18; 3380 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3381 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3382 private final static int MSG_INVALIDATE_WORLD = 22; 3383 private final static int MSG_WINDOW_MOVED = 23; 3384 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 24; 3385 private final static int MSG_DISPATCH_WINDOW_SHOWN = 25; 3386 private final static int MSG_REQUEST_KEYBOARD_SHORTCUTS = 26; 3387 private final static int MSG_UPDATE_POINTER_ICON = 27; 3388 3389 final class ViewRootHandler extends Handler { 3390 @Override 3391 public String getMessageName(Message message) { 3392 switch (message.what) { 3393 case MSG_INVALIDATE: 3394 return "MSG_INVALIDATE"; 3395 case MSG_INVALIDATE_RECT: 3396 return "MSG_INVALIDATE_RECT"; 3397 case MSG_DIE: 3398 return "MSG_DIE"; 3399 case MSG_RESIZED: 3400 return "MSG_RESIZED"; 3401 case MSG_RESIZED_REPORT: 3402 return "MSG_RESIZED_REPORT"; 3403 case MSG_WINDOW_FOCUS_CHANGED: 3404 return "MSG_WINDOW_FOCUS_CHANGED"; 3405 case MSG_DISPATCH_INPUT_EVENT: 3406 return "MSG_DISPATCH_INPUT_EVENT"; 3407 case MSG_DISPATCH_APP_VISIBILITY: 3408 return "MSG_DISPATCH_APP_VISIBILITY"; 3409 case MSG_DISPATCH_GET_NEW_SURFACE: 3410 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3411 case MSG_DISPATCH_KEY_FROM_IME: 3412 return "MSG_DISPATCH_KEY_FROM_IME"; 3413 case MSG_CHECK_FOCUS: 3414 return "MSG_CHECK_FOCUS"; 3415 case MSG_CLOSE_SYSTEM_DIALOGS: 3416 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3417 case MSG_DISPATCH_DRAG_EVENT: 3418 return "MSG_DISPATCH_DRAG_EVENT"; 3419 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3420 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3421 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3422 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3423 case MSG_UPDATE_CONFIGURATION: 3424 return "MSG_UPDATE_CONFIGURATION"; 3425 case MSG_PROCESS_INPUT_EVENTS: 3426 return "MSG_PROCESS_INPUT_EVENTS"; 3427 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3428 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3429 case MSG_WINDOW_MOVED: 3430 return "MSG_WINDOW_MOVED"; 3431 case MSG_SYNTHESIZE_INPUT_EVENT: 3432 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3433 case MSG_DISPATCH_WINDOW_SHOWN: 3434 return "MSG_DISPATCH_WINDOW_SHOWN"; 3435 case MSG_UPDATE_POINTER_ICON: 3436 return "MSG_UPDATE_POINTER_ICON"; 3437 } 3438 return super.getMessageName(message); 3439 } 3440 3441 @Override 3442 public boolean sendMessageAtTime(Message msg, long uptimeMillis) { 3443 if (msg.what == MSG_REQUEST_KEYBOARD_SHORTCUTS && msg.obj == null) { 3444 // Debugging for b/27963013 3445 throw new NullPointerException( 3446 "Attempted to call MSG_REQUEST_KEYBOARD_SHORTCUTS with null receiver:"); 3447 } 3448 return super.sendMessageAtTime(msg, uptimeMillis); 3449 } 3450 3451 @Override 3452 public void handleMessage(Message msg) { 3453 switch (msg.what) { 3454 case MSG_INVALIDATE: 3455 ((View) msg.obj).invalidate(); 3456 break; 3457 case MSG_INVALIDATE_RECT: 3458 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3459 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3460 info.recycle(); 3461 break; 3462 case MSG_PROCESS_INPUT_EVENTS: 3463 mProcessInputEventsScheduled = false; 3464 doProcessInputEvents(); 3465 break; 3466 case MSG_DISPATCH_APP_VISIBILITY: 3467 handleAppVisibility(msg.arg1 != 0); 3468 break; 3469 case MSG_DISPATCH_GET_NEW_SURFACE: 3470 handleGetNewSurface(); 3471 break; 3472 case MSG_RESIZED: { 3473 // Recycled in the fall through... 3474 SomeArgs args = (SomeArgs) msg.obj; 3475 if (mWinFrame.equals(args.arg1) 3476 && mPendingOverscanInsets.equals(args.arg5) 3477 && mPendingContentInsets.equals(args.arg2) 3478 && mPendingStableInsets.equals(args.arg6) 3479 && mPendingVisibleInsets.equals(args.arg3) 3480 && mPendingOutsets.equals(args.arg7) 3481 && mPendingBackDropFrame.equals(args.arg8) 3482 && args.arg4 == null 3483 && args.argi1 == 0) { 3484 break; 3485 } 3486 } // fall through... 3487 case MSG_RESIZED_REPORT: 3488 if (mAdded) { 3489 SomeArgs args = (SomeArgs) msg.obj; 3490 3491 Configuration config = (Configuration) args.arg4; 3492 if (config != null) { 3493 updateConfiguration(config, false); 3494 } 3495 3496 final boolean framesChanged = !mWinFrame.equals(args.arg1) 3497 || !mPendingOverscanInsets.equals(args.arg5) 3498 || !mPendingContentInsets.equals(args.arg2) 3499 || !mPendingStableInsets.equals(args.arg6) 3500 || !mPendingVisibleInsets.equals(args.arg3) 3501 || !mPendingOutsets.equals(args.arg7); 3502 3503 mWinFrame.set((Rect) args.arg1); 3504 mPendingOverscanInsets.set((Rect) args.arg5); 3505 mPendingContentInsets.set((Rect) args.arg2); 3506 mPendingStableInsets.set((Rect) args.arg6); 3507 mPendingVisibleInsets.set((Rect) args.arg3); 3508 mPendingOutsets.set((Rect) args.arg7); 3509 mPendingBackDropFrame.set((Rect) args.arg8); 3510 mForceNextWindowRelayout = args.argi1 != 0; 3511 mPendingAlwaysConsumeNavBar = args.argi2 != 0; 3512 3513 args.recycle(); 3514 3515 if (msg.what == MSG_RESIZED_REPORT) { 3516 mReportNextDraw = true; 3517 } 3518 3519 if (mView != null && framesChanged) { 3520 forceLayout(mView); 3521 } 3522 3523 requestLayout(); 3524 } 3525 break; 3526 case MSG_WINDOW_MOVED: 3527 if (mAdded) { 3528 final int w = mWinFrame.width(); 3529 final int h = mWinFrame.height(); 3530 final int l = msg.arg1; 3531 final int t = msg.arg2; 3532 mWinFrame.left = l; 3533 mWinFrame.right = l + w; 3534 mWinFrame.top = t; 3535 mWinFrame.bottom = t + h; 3536 3537 mPendingBackDropFrame.set(mWinFrame); 3538 3539 // Suppress layouts during resizing - a correct layout will happen when resizing 3540 // is done, and this just increases system load. 3541 boolean isDockedDivider = mWindowAttributes.type == TYPE_DOCK_DIVIDER; 3542 boolean suppress = (mDragResizing && mResizeMode == RESIZE_MODE_DOCKED_DIVIDER) 3543 || isDockedDivider; 3544 if (!suppress) { 3545 if (mView != null) { 3546 forceLayout(mView); 3547 } 3548 requestLayout(); 3549 } else { 3550 maybeHandleWindowMove(mWinFrame); 3551 } 3552 } 3553 break; 3554 case MSG_WINDOW_FOCUS_CHANGED: { 3555 if (mAdded) { 3556 boolean hasWindowFocus = msg.arg1 != 0; 3557 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3558 3559 profileRendering(hasWindowFocus); 3560 3561 if (hasWindowFocus) { 3562 boolean inTouchMode = msg.arg2 != 0; 3563 ensureTouchModeLocally(inTouchMode); 3564 3565 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3566 mFullRedrawNeeded = true; 3567 try { 3568 final WindowManager.LayoutParams lp = mWindowAttributes; 3569 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3570 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3571 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 3572 } catch (OutOfResourcesException e) { 3573 Log.e(mTag, "OutOfResourcesException locking surface", e); 3574 try { 3575 if (!mWindowSession.outOfMemory(mWindow)) { 3576 Slog.w(mTag, "No processes killed for memory; killing self"); 3577 Process.killProcess(Process.myPid()); 3578 } 3579 } catch (RemoteException ex) { 3580 } 3581 // Retry in a bit. 3582 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3583 return; 3584 } 3585 } 3586 } 3587 3588 mLastWasImTarget = WindowManager.LayoutParams 3589 .mayUseInputMethod(mWindowAttributes.flags); 3590 3591 InputMethodManager imm = InputMethodManager.peekInstance(); 3592 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3593 imm.onPreWindowFocus(mView, hasWindowFocus); 3594 } 3595 if (mView != null) { 3596 mAttachInfo.mKeyDispatchState.reset(); 3597 mView.dispatchWindowFocusChanged(hasWindowFocus); 3598 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3599 } 3600 3601 // Note: must be done after the focus change callbacks, 3602 // so all of the view state is set up correctly. 3603 if (hasWindowFocus) { 3604 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3605 imm.onPostWindowFocus(mView, mView.findFocus(), 3606 mWindowAttributes.softInputMode, 3607 !mHasHadWindowFocus, mWindowAttributes.flags); 3608 } 3609 // Clear the forward bit. We can just do this directly, since 3610 // the window manager doesn't care about it. 3611 mWindowAttributes.softInputMode &= 3612 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3613 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3614 .softInputMode &= 3615 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3616 mHasHadWindowFocus = true; 3617 } 3618 } 3619 } break; 3620 case MSG_DIE: 3621 doDie(); 3622 break; 3623 case MSG_DISPATCH_INPUT_EVENT: { 3624 SomeArgs args = (SomeArgs)msg.obj; 3625 InputEvent event = (InputEvent)args.arg1; 3626 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3627 enqueueInputEvent(event, receiver, 0, true); 3628 args.recycle(); 3629 } break; 3630 case MSG_SYNTHESIZE_INPUT_EVENT: { 3631 InputEvent event = (InputEvent)msg.obj; 3632 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3633 } break; 3634 case MSG_DISPATCH_KEY_FROM_IME: { 3635 if (LOCAL_LOGV) Log.v( 3636 TAG, "Dispatching key " 3637 + msg.obj + " from IME to " + mView); 3638 KeyEvent event = (KeyEvent)msg.obj; 3639 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3640 // The IME is trying to say this event is from the 3641 // system! Bad bad bad! 3642 //noinspection UnusedAssignment 3643 event = KeyEvent.changeFlags(event, event.getFlags() & 3644 ~KeyEvent.FLAG_FROM_SYSTEM); 3645 } 3646 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3647 } break; 3648 case MSG_CHECK_FOCUS: { 3649 InputMethodManager imm = InputMethodManager.peekInstance(); 3650 if (imm != null) { 3651 imm.checkFocus(); 3652 } 3653 } break; 3654 case MSG_CLOSE_SYSTEM_DIALOGS: { 3655 if (mView != null) { 3656 mView.onCloseSystemDialogs((String)msg.obj); 3657 } 3658 } break; 3659 case MSG_DISPATCH_DRAG_EVENT: 3660 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3661 DragEvent event = (DragEvent)msg.obj; 3662 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3663 handleDragEvent(event); 3664 } break; 3665 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3666 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3667 } break; 3668 case MSG_UPDATE_CONFIGURATION: { 3669 Configuration config = (Configuration)msg.obj; 3670 if (config.isOtherSeqNewer(mLastConfiguration)) { 3671 config = mLastConfiguration; 3672 } 3673 updateConfiguration(config, false); 3674 } break; 3675 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3676 setAccessibilityFocus(null, null); 3677 } break; 3678 case MSG_INVALIDATE_WORLD: { 3679 if (mView != null) { 3680 invalidateWorld(mView); 3681 } 3682 } break; 3683 case MSG_DISPATCH_WINDOW_SHOWN: { 3684 handleDispatchWindowShown(); 3685 } break; 3686 case MSG_REQUEST_KEYBOARD_SHORTCUTS: { 3687 final IResultReceiver receiver = (IResultReceiver) msg.obj; 3688 final int deviceId = msg.arg1; 3689 handleRequestKeyboardShortcuts(receiver, deviceId); 3690 } break; 3691 case MSG_UPDATE_POINTER_ICON: { 3692 MotionEvent event = (MotionEvent) msg.obj; 3693 resetPointerIcon(event); 3694 } break; 3695 } 3696 } 3697 } 3698 3699 final ViewRootHandler mHandler = new ViewRootHandler(); 3700 3701 /** 3702 * Something in the current window tells us we need to change the touch mode. For 3703 * example, we are not in touch mode, and the user touches the screen. 3704 * 3705 * If the touch mode has changed, tell the window manager, and handle it locally. 3706 * 3707 * @param inTouchMode Whether we want to be in touch mode. 3708 * @return True if the touch mode changed and focus changed was changed as a result 3709 */ 3710 boolean ensureTouchMode(boolean inTouchMode) { 3711 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3712 + "touch mode is " + mAttachInfo.mInTouchMode); 3713 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3714 3715 // tell the window manager 3716 try { 3717 mWindowSession.setInTouchMode(inTouchMode); 3718 } catch (RemoteException e) { 3719 throw new RuntimeException(e); 3720 } 3721 3722 // handle the change 3723 return ensureTouchModeLocally(inTouchMode); 3724 } 3725 3726 /** 3727 * Ensure that the touch mode for this window is set, and if it is changing, 3728 * take the appropriate action. 3729 * @param inTouchMode Whether we want to be in touch mode. 3730 * @return True if the touch mode changed and focus changed was changed as a result 3731 */ 3732 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3733 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3734 + "touch mode is " + mAttachInfo.mInTouchMode); 3735 3736 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3737 3738 mAttachInfo.mInTouchMode = inTouchMode; 3739 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3740 3741 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3742 } 3743 3744 private boolean enterTouchMode() { 3745 if (mView != null && mView.hasFocus()) { 3746 // note: not relying on mFocusedView here because this could 3747 // be when the window is first being added, and mFocused isn't 3748 // set yet. 3749 final View focused = mView.findFocus(); 3750 if (focused != null && !focused.isFocusableInTouchMode()) { 3751 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3752 if (ancestorToTakeFocus != null) { 3753 // there is an ancestor that wants focus after its 3754 // descendants that is focusable in touch mode.. give it 3755 // focus 3756 return ancestorToTakeFocus.requestFocus(); 3757 } else { 3758 // There's nothing to focus. Clear and propagate through the 3759 // hierarchy, but don't attempt to place new focus. 3760 focused.clearFocusInternal(null, true, false); 3761 return true; 3762 } 3763 } 3764 } 3765 return false; 3766 } 3767 3768 /** 3769 * Find an ancestor of focused that wants focus after its descendants and is 3770 * focusable in touch mode. 3771 * @param focused The currently focused view. 3772 * @return An appropriate view, or null if no such view exists. 3773 */ 3774 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3775 ViewParent parent = focused.getParent(); 3776 while (parent instanceof ViewGroup) { 3777 final ViewGroup vgParent = (ViewGroup) parent; 3778 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3779 && vgParent.isFocusableInTouchMode()) { 3780 return vgParent; 3781 } 3782 if (vgParent.isRootNamespace()) { 3783 return null; 3784 } else { 3785 parent = vgParent.getParent(); 3786 } 3787 } 3788 return null; 3789 } 3790 3791 private boolean leaveTouchMode() { 3792 if (mView != null) { 3793 if (mView.hasFocus()) { 3794 View focusedView = mView.findFocus(); 3795 if (!(focusedView instanceof ViewGroup)) { 3796 // some view has focus, let it keep it 3797 return false; 3798 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3799 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3800 // some view group has focus, and doesn't prefer its children 3801 // over itself for focus, so let them keep it. 3802 return false; 3803 } 3804 } 3805 3806 // find the best view to give focus to in this brave new non-touch-mode 3807 // world 3808 final View focused = focusSearch(null, View.FOCUS_DOWN); 3809 if (focused != null) { 3810 return focused.requestFocus(View.FOCUS_DOWN); 3811 } 3812 } 3813 return false; 3814 } 3815 3816 /** 3817 * Base class for implementing a stage in the chain of responsibility 3818 * for processing input events. 3819 * <p> 3820 * Events are delivered to the stage by the {@link #deliver} method. The stage 3821 * then has the choice of finishing the event or forwarding it to the next stage. 3822 * </p> 3823 */ 3824 abstract class InputStage { 3825 private final InputStage mNext; 3826 3827 protected static final int FORWARD = 0; 3828 protected static final int FINISH_HANDLED = 1; 3829 protected static final int FINISH_NOT_HANDLED = 2; 3830 3831 /** 3832 * Creates an input stage. 3833 * @param next The next stage to which events should be forwarded. 3834 */ 3835 public InputStage(InputStage next) { 3836 mNext = next; 3837 } 3838 3839 /** 3840 * Delivers an event to be processed. 3841 */ 3842 public final void deliver(QueuedInputEvent q) { 3843 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3844 forward(q); 3845 } else if (shouldDropInputEvent(q)) { 3846 finish(q, false); 3847 } else { 3848 apply(q, onProcess(q)); 3849 } 3850 } 3851 3852 /** 3853 * Marks the the input event as finished then forwards it to the next stage. 3854 */ 3855 protected void finish(QueuedInputEvent q, boolean handled) { 3856 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3857 if (handled) { 3858 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3859 } 3860 forward(q); 3861 } 3862 3863 /** 3864 * Forwards the event to the next stage. 3865 */ 3866 protected void forward(QueuedInputEvent q) { 3867 onDeliverToNext(q); 3868 } 3869 3870 /** 3871 * Applies a result code from {@link #onProcess} to the specified event. 3872 */ 3873 protected void apply(QueuedInputEvent q, int result) { 3874 if (result == FORWARD) { 3875 forward(q); 3876 } else if (result == FINISH_HANDLED) { 3877 finish(q, true); 3878 } else if (result == FINISH_NOT_HANDLED) { 3879 finish(q, false); 3880 } else { 3881 throw new IllegalArgumentException("Invalid result: " + result); 3882 } 3883 } 3884 3885 /** 3886 * Called when an event is ready to be processed. 3887 * @return A result code indicating how the event was handled. 3888 */ 3889 protected int onProcess(QueuedInputEvent q) { 3890 return FORWARD; 3891 } 3892 3893 /** 3894 * Called when an event is being delivered to the next stage. 3895 */ 3896 protected void onDeliverToNext(QueuedInputEvent q) { 3897 if (DEBUG_INPUT_STAGES) { 3898 Log.v(mTag, "Done with " + getClass().getSimpleName() + ". " + q); 3899 } 3900 if (mNext != null) { 3901 mNext.deliver(q); 3902 } else { 3903 finishInputEvent(q); 3904 } 3905 } 3906 3907 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3908 if (mView == null || !mAdded) { 3909 Slog.w(mTag, "Dropping event due to root view being removed: " + q.mEvent); 3910 return true; 3911 } else if ((!mAttachInfo.mHasWindowFocus 3912 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) || mStopped 3913 || (mIsAmbientMode && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_BUTTON)) 3914 || (mPausedForTransition && !isBack(q.mEvent))) { 3915 // This is a focus event and the window doesn't currently have input focus or 3916 // has stopped. This could be an event that came back from the previous stage 3917 // but the window has lost focus or stopped in the meantime. 3918 if (isTerminalInputEvent(q.mEvent)) { 3919 // Don't drop terminal input events, however mark them as canceled. 3920 q.mEvent.cancel(); 3921 Slog.w(mTag, "Cancelling event due to no window focus: " + q.mEvent); 3922 return false; 3923 } 3924 3925 // Drop non-terminal input events. 3926 Slog.w(mTag, "Dropping event due to no window focus: " + q.mEvent); 3927 return true; 3928 } 3929 return false; 3930 } 3931 3932 void dump(String prefix, PrintWriter writer) { 3933 if (mNext != null) { 3934 mNext.dump(prefix, writer); 3935 } 3936 } 3937 3938 private boolean isBack(InputEvent event) { 3939 if (event instanceof KeyEvent) { 3940 return ((KeyEvent) event).getKeyCode() == KeyEvent.KEYCODE_BACK; 3941 } else { 3942 return false; 3943 } 3944 } 3945 } 3946 3947 /** 3948 * Base class for implementing an input pipeline stage that supports 3949 * asynchronous and out-of-order processing of input events. 3950 * <p> 3951 * In addition to what a normal input stage can do, an asynchronous 3952 * input stage may also defer an input event that has been delivered to it 3953 * and finish or forward it later. 3954 * </p> 3955 */ 3956 abstract class AsyncInputStage extends InputStage { 3957 private final String mTraceCounter; 3958 3959 private QueuedInputEvent mQueueHead; 3960 private QueuedInputEvent mQueueTail; 3961 private int mQueueLength; 3962 3963 protected static final int DEFER = 3; 3964 3965 /** 3966 * Creates an asynchronous input stage. 3967 * @param next The next stage to which events should be forwarded. 3968 * @param traceCounter The name of a counter to record the size of 3969 * the queue of pending events. 3970 */ 3971 public AsyncInputStage(InputStage next, String traceCounter) { 3972 super(next); 3973 mTraceCounter = traceCounter; 3974 } 3975 3976 /** 3977 * Marks the event as deferred, which is to say that it will be handled 3978 * asynchronously. The caller is responsible for calling {@link #forward} 3979 * or {@link #finish} later when it is done handling the event. 3980 */ 3981 protected void defer(QueuedInputEvent q) { 3982 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3983 enqueue(q); 3984 } 3985 3986 @Override 3987 protected void forward(QueuedInputEvent q) { 3988 // Clear the deferred flag. 3989 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3990 3991 // Fast path if the queue is empty. 3992 QueuedInputEvent curr = mQueueHead; 3993 if (curr == null) { 3994 super.forward(q); 3995 return; 3996 } 3997 3998 // Determine whether the event must be serialized behind any others 3999 // before it can be delivered to the next stage. This is done because 4000 // deferred events might be handled out of order by the stage. 4001 final int deviceId = q.mEvent.getDeviceId(); 4002 QueuedInputEvent prev = null; 4003 boolean blocked = false; 4004 while (curr != null && curr != q) { 4005 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 4006 blocked = true; 4007 } 4008 prev = curr; 4009 curr = curr.mNext; 4010 } 4011 4012 // If the event is blocked, then leave it in the queue to be delivered later. 4013 // Note that the event might not yet be in the queue if it was not previously 4014 // deferred so we will enqueue it if needed. 4015 if (blocked) { 4016 if (curr == null) { 4017 enqueue(q); 4018 } 4019 return; 4020 } 4021 4022 // The event is not blocked. Deliver it immediately. 4023 if (curr != null) { 4024 curr = curr.mNext; 4025 dequeue(q, prev); 4026 } 4027 super.forward(q); 4028 4029 // Dequeuing this event may have unblocked successors. Deliver them. 4030 while (curr != null) { 4031 if (deviceId == curr.mEvent.getDeviceId()) { 4032 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 4033 break; 4034 } 4035 QueuedInputEvent next = curr.mNext; 4036 dequeue(curr, prev); 4037 super.forward(curr); 4038 curr = next; 4039 } else { 4040 prev = curr; 4041 curr = curr.mNext; 4042 } 4043 } 4044 } 4045 4046 @Override 4047 protected void apply(QueuedInputEvent q, int result) { 4048 if (result == DEFER) { 4049 defer(q); 4050 } else { 4051 super.apply(q, result); 4052 } 4053 } 4054 4055 private void enqueue(QueuedInputEvent q) { 4056 if (mQueueTail == null) { 4057 mQueueHead = q; 4058 mQueueTail = q; 4059 } else { 4060 mQueueTail.mNext = q; 4061 mQueueTail = q; 4062 } 4063 4064 mQueueLength += 1; 4065 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 4066 } 4067 4068 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 4069 if (prev == null) { 4070 mQueueHead = q.mNext; 4071 } else { 4072 prev.mNext = q.mNext; 4073 } 4074 if (mQueueTail == q) { 4075 mQueueTail = prev; 4076 } 4077 q.mNext = null; 4078 4079 mQueueLength -= 1; 4080 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 4081 } 4082 4083 @Override 4084 void dump(String prefix, PrintWriter writer) { 4085 writer.print(prefix); 4086 writer.print(getClass().getName()); 4087 writer.print(": mQueueLength="); 4088 writer.println(mQueueLength); 4089 4090 super.dump(prefix, writer); 4091 } 4092 } 4093 4094 /** 4095 * Delivers pre-ime input events to a native activity. 4096 * Does not support pointer events. 4097 */ 4098 final class NativePreImeInputStage extends AsyncInputStage 4099 implements InputQueue.FinishedInputEventCallback { 4100 public NativePreImeInputStage(InputStage next, String traceCounter) { 4101 super(next, traceCounter); 4102 } 4103 4104 @Override 4105 protected int onProcess(QueuedInputEvent q) { 4106 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 4107 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 4108 return DEFER; 4109 } 4110 return FORWARD; 4111 } 4112 4113 @Override 4114 public void onFinishedInputEvent(Object token, boolean handled) { 4115 QueuedInputEvent q = (QueuedInputEvent)token; 4116 if (handled) { 4117 finish(q, true); 4118 return; 4119 } 4120 forward(q); 4121 } 4122 } 4123 4124 /** 4125 * Delivers pre-ime input events to the view hierarchy. 4126 * Does not support pointer events. 4127 */ 4128 final class ViewPreImeInputStage extends InputStage { 4129 public ViewPreImeInputStage(InputStage next) { 4130 super(next); 4131 } 4132 4133 @Override 4134 protected int onProcess(QueuedInputEvent q) { 4135 if (q.mEvent instanceof KeyEvent) { 4136 return processKeyEvent(q); 4137 } 4138 return FORWARD; 4139 } 4140 4141 private int processKeyEvent(QueuedInputEvent q) { 4142 final KeyEvent event = (KeyEvent)q.mEvent; 4143 if (mView.dispatchKeyEventPreIme(event)) { 4144 return FINISH_HANDLED; 4145 } 4146 return FORWARD; 4147 } 4148 } 4149 4150 /** 4151 * Delivers input events to the ime. 4152 * Does not support pointer events. 4153 */ 4154 final class ImeInputStage extends AsyncInputStage 4155 implements InputMethodManager.FinishedInputEventCallback { 4156 public ImeInputStage(InputStage next, String traceCounter) { 4157 super(next, traceCounter); 4158 } 4159 4160 @Override 4161 protected int onProcess(QueuedInputEvent q) { 4162 if (mLastWasImTarget && !isInLocalFocusMode()) { 4163 InputMethodManager imm = InputMethodManager.peekInstance(); 4164 if (imm != null) { 4165 final InputEvent event = q.mEvent; 4166 if (DEBUG_IMF) Log.v(mTag, "Sending input event to IME: " + event); 4167 int result = imm.dispatchInputEvent(event, q, this, mHandler); 4168 if (result == InputMethodManager.DISPATCH_HANDLED) { 4169 return FINISH_HANDLED; 4170 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 4171 // The IME could not handle it, so skip along to the next InputStage 4172 return FORWARD; 4173 } else { 4174 return DEFER; // callback will be invoked later 4175 } 4176 } 4177 } 4178 return FORWARD; 4179 } 4180 4181 @Override 4182 public void onFinishedInputEvent(Object token, boolean handled) { 4183 QueuedInputEvent q = (QueuedInputEvent)token; 4184 if (handled) { 4185 finish(q, true); 4186 return; 4187 } 4188 forward(q); 4189 } 4190 } 4191 4192 /** 4193 * Performs early processing of post-ime input events. 4194 */ 4195 final class EarlyPostImeInputStage extends InputStage { 4196 public EarlyPostImeInputStage(InputStage next) { 4197 super(next); 4198 } 4199 4200 @Override 4201 protected int onProcess(QueuedInputEvent q) { 4202 if (q.mEvent instanceof KeyEvent) { 4203 return processKeyEvent(q); 4204 } else { 4205 final int source = q.mEvent.getSource(); 4206 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4207 return processPointerEvent(q); 4208 } 4209 } 4210 return FORWARD; 4211 } 4212 4213 private int processKeyEvent(QueuedInputEvent q) { 4214 final KeyEvent event = (KeyEvent)q.mEvent; 4215 4216 // If the key's purpose is to exit touch mode then we consume it 4217 // and consider it handled. 4218 if (checkForLeavingTouchModeAndConsume(event)) { 4219 return FINISH_HANDLED; 4220 } 4221 4222 // Make sure the fallback event policy sees all keys that will be 4223 // delivered to the view hierarchy. 4224 mFallbackEventHandler.preDispatchKeyEvent(event); 4225 return FORWARD; 4226 } 4227 4228 private int processPointerEvent(QueuedInputEvent q) { 4229 final MotionEvent event = (MotionEvent)q.mEvent; 4230 4231 // Translate the pointer event for compatibility, if needed. 4232 if (mTranslator != null) { 4233 mTranslator.translateEventInScreenToAppWindow(event); 4234 } 4235 4236 // Enter touch mode on down or scroll. 4237 final int action = event.getAction(); 4238 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 4239 ensureTouchMode(true); 4240 } 4241 4242 // Offset the scroll position. 4243 if (mCurScrollY != 0) { 4244 event.offsetLocation(0, mCurScrollY); 4245 } 4246 4247 // Remember the touch position for possible drag-initiation. 4248 if (event.isTouchEvent()) { 4249 mLastTouchPoint.x = event.getRawX(); 4250 mLastTouchPoint.y = event.getRawY(); 4251 mLastTouchSource = event.getSource(); 4252 } 4253 return FORWARD; 4254 } 4255 } 4256 4257 /** 4258 * Delivers post-ime input events to a native activity. 4259 */ 4260 final class NativePostImeInputStage extends AsyncInputStage 4261 implements InputQueue.FinishedInputEventCallback { 4262 public NativePostImeInputStage(InputStage next, String traceCounter) { 4263 super(next, traceCounter); 4264 } 4265 4266 @Override 4267 protected int onProcess(QueuedInputEvent q) { 4268 if (mInputQueue != null) { 4269 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 4270 return DEFER; 4271 } 4272 return FORWARD; 4273 } 4274 4275 @Override 4276 public void onFinishedInputEvent(Object token, boolean handled) { 4277 QueuedInputEvent q = (QueuedInputEvent)token; 4278 if (handled) { 4279 finish(q, true); 4280 return; 4281 } 4282 forward(q); 4283 } 4284 } 4285 4286 /** 4287 * Delivers post-ime input events to the view hierarchy. 4288 */ 4289 final class ViewPostImeInputStage extends InputStage { 4290 public ViewPostImeInputStage(InputStage next) { 4291 super(next); 4292 } 4293 4294 @Override 4295 protected int onProcess(QueuedInputEvent q) { 4296 if (q.mEvent instanceof KeyEvent) { 4297 return processKeyEvent(q); 4298 } else { 4299 final int source = q.mEvent.getSource(); 4300 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4301 return processPointerEvent(q); 4302 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4303 return processTrackballEvent(q); 4304 } else { 4305 return processGenericMotionEvent(q); 4306 } 4307 } 4308 } 4309 4310 @Override 4311 protected void onDeliverToNext(QueuedInputEvent q) { 4312 if (mUnbufferedInputDispatch 4313 && q.mEvent instanceof MotionEvent 4314 && ((MotionEvent)q.mEvent).isTouchEvent() 4315 && isTerminalInputEvent(q.mEvent)) { 4316 mUnbufferedInputDispatch = false; 4317 scheduleConsumeBatchedInput(); 4318 } 4319 super.onDeliverToNext(q); 4320 } 4321 4322 private int processKeyEvent(QueuedInputEvent q) { 4323 final KeyEvent event = (KeyEvent)q.mEvent; 4324 4325 // Deliver the key to the view hierarchy. 4326 if (mView.dispatchKeyEvent(event)) { 4327 return FINISH_HANDLED; 4328 } 4329 4330 if (shouldDropInputEvent(q)) { 4331 return FINISH_NOT_HANDLED; 4332 } 4333 4334 // If the Control modifier is held, try to interpret the key as a shortcut. 4335 if (event.getAction() == KeyEvent.ACTION_DOWN 4336 && event.isCtrlPressed() 4337 && event.getRepeatCount() == 0 4338 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4339 if (mView.dispatchKeyShortcutEvent(event)) { 4340 return FINISH_HANDLED; 4341 } 4342 if (shouldDropInputEvent(q)) { 4343 return FINISH_NOT_HANDLED; 4344 } 4345 } 4346 4347 // Apply the fallback event policy. 4348 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4349 return FINISH_HANDLED; 4350 } 4351 if (shouldDropInputEvent(q)) { 4352 return FINISH_NOT_HANDLED; 4353 } 4354 4355 // Handle automatic focus changes. 4356 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4357 int direction = 0; 4358 switch (event.getKeyCode()) { 4359 case KeyEvent.KEYCODE_DPAD_LEFT: 4360 if (event.hasNoModifiers()) { 4361 direction = View.FOCUS_LEFT; 4362 } 4363 break; 4364 case KeyEvent.KEYCODE_DPAD_RIGHT: 4365 if (event.hasNoModifiers()) { 4366 direction = View.FOCUS_RIGHT; 4367 } 4368 break; 4369 case KeyEvent.KEYCODE_DPAD_UP: 4370 if (event.hasNoModifiers()) { 4371 direction = View.FOCUS_UP; 4372 } 4373 break; 4374 case KeyEvent.KEYCODE_DPAD_DOWN: 4375 if (event.hasNoModifiers()) { 4376 direction = View.FOCUS_DOWN; 4377 } 4378 break; 4379 case KeyEvent.KEYCODE_TAB: 4380 if (event.hasNoModifiers()) { 4381 direction = View.FOCUS_FORWARD; 4382 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4383 direction = View.FOCUS_BACKWARD; 4384 } 4385 break; 4386 } 4387 if (direction != 0) { 4388 View focused = mView.findFocus(); 4389 if (focused != null) { 4390 View v = focused.focusSearch(direction); 4391 if (v != null && v != focused) { 4392 // do the math the get the interesting rect 4393 // of previous focused into the coord system of 4394 // newly focused view 4395 focused.getFocusedRect(mTempRect); 4396 if (mView instanceof ViewGroup) { 4397 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4398 focused, mTempRect); 4399 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4400 v, mTempRect); 4401 } 4402 if (v.requestFocus(direction, mTempRect)) { 4403 playSoundEffect(SoundEffectConstants 4404 .getContantForFocusDirection(direction)); 4405 return FINISH_HANDLED; 4406 } 4407 } 4408 4409 // Give the focused view a last chance to handle the dpad key. 4410 if (mView.dispatchUnhandledMove(focused, direction)) { 4411 return FINISH_HANDLED; 4412 } 4413 } else { 4414 // find the best view to give focus to in this non-touch-mode with no-focus 4415 View v = focusSearch(null, direction); 4416 if (v != null && v.requestFocus(direction)) { 4417 return FINISH_HANDLED; 4418 } 4419 } 4420 } 4421 } 4422 return FORWARD; 4423 } 4424 4425 private int processPointerEvent(QueuedInputEvent q) { 4426 final MotionEvent event = (MotionEvent)q.mEvent; 4427 4428 mAttachInfo.mUnbufferedDispatchRequested = false; 4429 final View eventTarget = 4430 (event.isFromSource(InputDevice.SOURCE_MOUSE) && mCapturingView != null) ? 4431 mCapturingView : mView; 4432 mAttachInfo.mHandlingPointerEvent = true; 4433 boolean handled = eventTarget.dispatchPointerEvent(event); 4434 maybeUpdatePointerIcon(event); 4435 mAttachInfo.mHandlingPointerEvent = false; 4436 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4437 mUnbufferedInputDispatch = true; 4438 if (mConsumeBatchedInputScheduled) { 4439 scheduleConsumeBatchedInputImmediately(); 4440 } 4441 } 4442 return handled ? FINISH_HANDLED : FORWARD; 4443 } 4444 4445 private void maybeUpdatePointerIcon(MotionEvent event) { 4446 if (event.getPointerCount() == 1 && event.isFromSource(InputDevice.SOURCE_MOUSE)) { 4447 if (event.getActionMasked() == MotionEvent.ACTION_HOVER_ENTER 4448 || event.getActionMasked() == MotionEvent.ACTION_HOVER_EXIT) { 4449 // Other apps or the window manager may change the icon type outside of 4450 // this app, therefore the icon type has to be reset on enter/exit event. 4451 mPointerIconType = PointerIcon.TYPE_NOT_SPECIFIED; 4452 } 4453 4454 if (event.getActionMasked() != MotionEvent.ACTION_HOVER_EXIT) { 4455 if (!updatePointerIcon(event) && 4456 event.getActionMasked() == MotionEvent.ACTION_HOVER_MOVE) { 4457 mPointerIconType = PointerIcon.TYPE_NOT_SPECIFIED; 4458 } 4459 } 4460 } 4461 } 4462 4463 private int processTrackballEvent(QueuedInputEvent q) { 4464 final MotionEvent event = (MotionEvent)q.mEvent; 4465 4466 if (mView.dispatchTrackballEvent(event)) { 4467 return FINISH_HANDLED; 4468 } 4469 return FORWARD; 4470 } 4471 4472 private int processGenericMotionEvent(QueuedInputEvent q) { 4473 final MotionEvent event = (MotionEvent)q.mEvent; 4474 4475 // Deliver the event to the view. 4476 if (mView.dispatchGenericMotionEvent(event)) { 4477 return FINISH_HANDLED; 4478 } 4479 return FORWARD; 4480 } 4481 } 4482 4483 private void resetPointerIcon(MotionEvent event) { 4484 mPointerIconType = PointerIcon.TYPE_NOT_SPECIFIED; 4485 updatePointerIcon(event); 4486 } 4487 4488 private boolean updatePointerIcon(MotionEvent event) { 4489 final int pointerIndex = 0; 4490 final float x = event.getX(pointerIndex); 4491 final float y = event.getY(pointerIndex); 4492 if (mView == null) { 4493 // E.g. click outside a popup to dismiss it 4494 Slog.d(mTag, "updatePointerIcon called after view was removed"); 4495 return false; 4496 } 4497 if (x < 0 || x >= mView.getWidth() || y < 0 || y >= mView.getHeight()) { 4498 // E.g. when moving window divider with mouse 4499 Slog.d(mTag, "updatePointerIcon called with position out of bounds"); 4500 return false; 4501 } 4502 final PointerIcon pointerIcon = mView.onResolvePointerIcon(event, pointerIndex); 4503 final int pointerType = (pointerIcon != null) ? 4504 pointerIcon.getType() : PointerIcon.TYPE_DEFAULT; 4505 4506 if (mPointerIconType != pointerType) { 4507 mPointerIconType = pointerType; 4508 if (mPointerIconType != PointerIcon.TYPE_CUSTOM) { 4509 mCustomPointerIcon = null; 4510 InputManager.getInstance().setPointerIconType(pointerType); 4511 return true; 4512 } 4513 } 4514 if (mPointerIconType == PointerIcon.TYPE_CUSTOM && 4515 !pointerIcon.equals(mCustomPointerIcon)) { 4516 mCustomPointerIcon = pointerIcon; 4517 InputManager.getInstance().setCustomPointerIcon(mCustomPointerIcon); 4518 } 4519 return true; 4520 } 4521 4522 /** 4523 * Performs synthesis of new input events from unhandled input events. 4524 */ 4525 final class SyntheticInputStage extends InputStage { 4526 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4527 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4528 private final SyntheticTouchNavigationHandler mTouchNavigation = 4529 new SyntheticTouchNavigationHandler(); 4530 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4531 4532 public SyntheticInputStage() { 4533 super(null); 4534 } 4535 4536 @Override 4537 protected int onProcess(QueuedInputEvent q) { 4538 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4539 if (q.mEvent instanceof MotionEvent) { 4540 final MotionEvent event = (MotionEvent)q.mEvent; 4541 final int source = event.getSource(); 4542 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4543 mTrackball.process(event); 4544 return FINISH_HANDLED; 4545 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4546 mJoystick.process(event); 4547 return FINISH_HANDLED; 4548 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4549 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4550 mTouchNavigation.process(event); 4551 return FINISH_HANDLED; 4552 } 4553 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4554 mKeyboard.process((KeyEvent)q.mEvent); 4555 return FINISH_HANDLED; 4556 } 4557 4558 return FORWARD; 4559 } 4560 4561 @Override 4562 protected void onDeliverToNext(QueuedInputEvent q) { 4563 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4564 // Cancel related synthetic events if any prior stage has handled the event. 4565 if (q.mEvent instanceof MotionEvent) { 4566 final MotionEvent event = (MotionEvent)q.mEvent; 4567 final int source = event.getSource(); 4568 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4569 mTrackball.cancel(event); 4570 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4571 mJoystick.cancel(event); 4572 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4573 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4574 mTouchNavigation.cancel(event); 4575 } 4576 } 4577 } 4578 super.onDeliverToNext(q); 4579 } 4580 } 4581 4582 /** 4583 * Creates dpad events from unhandled trackball movements. 4584 */ 4585 final class SyntheticTrackballHandler { 4586 private final TrackballAxis mX = new TrackballAxis(); 4587 private final TrackballAxis mY = new TrackballAxis(); 4588 private long mLastTime; 4589 4590 public void process(MotionEvent event) { 4591 // Translate the trackball event into DPAD keys and try to deliver those. 4592 long curTime = SystemClock.uptimeMillis(); 4593 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4594 // It has been too long since the last movement, 4595 // so restart at the beginning. 4596 mX.reset(0); 4597 mY.reset(0); 4598 mLastTime = curTime; 4599 } 4600 4601 final int action = event.getAction(); 4602 final int metaState = event.getMetaState(); 4603 switch (action) { 4604 case MotionEvent.ACTION_DOWN: 4605 mX.reset(2); 4606 mY.reset(2); 4607 enqueueInputEvent(new KeyEvent(curTime, curTime, 4608 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4609 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4610 InputDevice.SOURCE_KEYBOARD)); 4611 break; 4612 case MotionEvent.ACTION_UP: 4613 mX.reset(2); 4614 mY.reset(2); 4615 enqueueInputEvent(new KeyEvent(curTime, curTime, 4616 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4617 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4618 InputDevice.SOURCE_KEYBOARD)); 4619 break; 4620 } 4621 4622 if (DEBUG_TRACKBALL) Log.v(mTag, "TB X=" + mX.position + " step=" 4623 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4624 + " move=" + event.getX() 4625 + " / Y=" + mY.position + " step=" 4626 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4627 + " move=" + event.getY()); 4628 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4629 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4630 4631 // Generate DPAD events based on the trackball movement. 4632 // We pick the axis that has moved the most as the direction of 4633 // the DPAD. When we generate DPAD events for one axis, then the 4634 // other axis is reset -- we don't want to perform DPAD jumps due 4635 // to slight movements in the trackball when making major movements 4636 // along the other axis. 4637 int keycode = 0; 4638 int movement = 0; 4639 float accel = 1; 4640 if (xOff > yOff) { 4641 movement = mX.generate(); 4642 if (movement != 0) { 4643 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4644 : KeyEvent.KEYCODE_DPAD_LEFT; 4645 accel = mX.acceleration; 4646 mY.reset(2); 4647 } 4648 } else if (yOff > 0) { 4649 movement = mY.generate(); 4650 if (movement != 0) { 4651 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4652 : KeyEvent.KEYCODE_DPAD_UP; 4653 accel = mY.acceleration; 4654 mX.reset(2); 4655 } 4656 } 4657 4658 if (keycode != 0) { 4659 if (movement < 0) movement = -movement; 4660 int accelMovement = (int)(movement * accel); 4661 if (DEBUG_TRACKBALL) Log.v(mTag, "Move: movement=" + movement 4662 + " accelMovement=" + accelMovement 4663 + " accel=" + accel); 4664 if (accelMovement > movement) { 4665 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4666 + keycode); 4667 movement--; 4668 int repeatCount = accelMovement - movement; 4669 enqueueInputEvent(new KeyEvent(curTime, curTime, 4670 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4671 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4672 InputDevice.SOURCE_KEYBOARD)); 4673 } 4674 while (movement > 0) { 4675 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4676 + keycode); 4677 movement--; 4678 curTime = SystemClock.uptimeMillis(); 4679 enqueueInputEvent(new KeyEvent(curTime, curTime, 4680 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4681 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4682 InputDevice.SOURCE_KEYBOARD)); 4683 enqueueInputEvent(new KeyEvent(curTime, curTime, 4684 KeyEvent.ACTION_UP, keycode, 0, metaState, 4685 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4686 InputDevice.SOURCE_KEYBOARD)); 4687 } 4688 mLastTime = curTime; 4689 } 4690 } 4691 4692 public void cancel(MotionEvent event) { 4693 mLastTime = Integer.MIN_VALUE; 4694 4695 // If we reach this, we consumed a trackball event. 4696 // Because we will not translate the trackball event into a key event, 4697 // touch mode will not exit, so we exit touch mode here. 4698 if (mView != null && mAdded) { 4699 ensureTouchMode(false); 4700 } 4701 } 4702 } 4703 4704 /** 4705 * Maintains state information for a single trackball axis, generating 4706 * discrete (DPAD) movements based on raw trackball motion. 4707 */ 4708 static final class TrackballAxis { 4709 /** 4710 * The maximum amount of acceleration we will apply. 4711 */ 4712 static final float MAX_ACCELERATION = 20; 4713 4714 /** 4715 * The maximum amount of time (in milliseconds) between events in order 4716 * for us to consider the user to be doing fast trackball movements, 4717 * and thus apply an acceleration. 4718 */ 4719 static final long FAST_MOVE_TIME = 150; 4720 4721 /** 4722 * Scaling factor to the time (in milliseconds) between events to how 4723 * much to multiple/divide the current acceleration. When movement 4724 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4725 * FAST_MOVE_TIME it divides it. 4726 */ 4727 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4728 4729 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4730 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4731 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4732 4733 float position; 4734 float acceleration = 1; 4735 long lastMoveTime = 0; 4736 int step; 4737 int dir; 4738 int nonAccelMovement; 4739 4740 void reset(int _step) { 4741 position = 0; 4742 acceleration = 1; 4743 lastMoveTime = 0; 4744 step = _step; 4745 dir = 0; 4746 } 4747 4748 /** 4749 * Add trackball movement into the state. If the direction of movement 4750 * has been reversed, the state is reset before adding the 4751 * movement (so that you don't have to compensate for any previously 4752 * collected movement before see the result of the movement in the 4753 * new direction). 4754 * 4755 * @return Returns the absolute value of the amount of movement 4756 * collected so far. 4757 */ 4758 float collect(float off, long time, String axis) { 4759 long normTime; 4760 if (off > 0) { 4761 normTime = (long)(off * FAST_MOVE_TIME); 4762 if (dir < 0) { 4763 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4764 position = 0; 4765 step = 0; 4766 acceleration = 1; 4767 lastMoveTime = 0; 4768 } 4769 dir = 1; 4770 } else if (off < 0) { 4771 normTime = (long)((-off) * FAST_MOVE_TIME); 4772 if (dir > 0) { 4773 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4774 position = 0; 4775 step = 0; 4776 acceleration = 1; 4777 lastMoveTime = 0; 4778 } 4779 dir = -1; 4780 } else { 4781 normTime = 0; 4782 } 4783 4784 // The number of milliseconds between each movement that is 4785 // considered "normal" and will not result in any acceleration 4786 // or deceleration, scaled by the offset we have here. 4787 if (normTime > 0) { 4788 long delta = time - lastMoveTime; 4789 lastMoveTime = time; 4790 float acc = acceleration; 4791 if (delta < normTime) { 4792 // The user is scrolling rapidly, so increase acceleration. 4793 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4794 if (scale > 1) acc *= scale; 4795 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4796 + off + " normTime=" + normTime + " delta=" + delta 4797 + " scale=" + scale + " acc=" + acc); 4798 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4799 } else { 4800 // The user is scrolling slowly, so decrease acceleration. 4801 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4802 if (scale > 1) acc /= scale; 4803 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4804 + off + " normTime=" + normTime + " delta=" + delta 4805 + " scale=" + scale + " acc=" + acc); 4806 acceleration = acc > 1 ? acc : 1; 4807 } 4808 } 4809 position += off; 4810 return Math.abs(position); 4811 } 4812 4813 /** 4814 * Generate the number of discrete movement events appropriate for 4815 * the currently collected trackball movement. 4816 * 4817 * @return Returns the number of discrete movements, either positive 4818 * or negative, or 0 if there is not enough trackball movement yet 4819 * for a discrete movement. 4820 */ 4821 int generate() { 4822 int movement = 0; 4823 nonAccelMovement = 0; 4824 do { 4825 final int dir = position >= 0 ? 1 : -1; 4826 switch (step) { 4827 // If we are going to execute the first step, then we want 4828 // to do this as soon as possible instead of waiting for 4829 // a full movement, in order to make things look responsive. 4830 case 0: 4831 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4832 return movement; 4833 } 4834 movement += dir; 4835 nonAccelMovement += dir; 4836 step = 1; 4837 break; 4838 // If we have generated the first movement, then we need 4839 // to wait for the second complete trackball motion before 4840 // generating the second discrete movement. 4841 case 1: 4842 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4843 return movement; 4844 } 4845 movement += dir; 4846 nonAccelMovement += dir; 4847 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4848 step = 2; 4849 break; 4850 // After the first two, we generate discrete movements 4851 // consistently with the trackball, applying an acceleration 4852 // if the trackball is moving quickly. This is a simple 4853 // acceleration on top of what we already compute based 4854 // on how quickly the wheel is being turned, to apply 4855 // a longer increasing acceleration to continuous movement 4856 // in one direction. 4857 default: 4858 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4859 return movement; 4860 } 4861 movement += dir; 4862 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4863 float acc = acceleration; 4864 acc *= 1.1f; 4865 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4866 break; 4867 } 4868 } while (true); 4869 } 4870 } 4871 4872 /** 4873 * Creates dpad events from unhandled joystick movements. 4874 */ 4875 final class SyntheticJoystickHandler extends Handler { 4876 private final static String TAG = "SyntheticJoystickHandler"; 4877 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4878 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4879 4880 private int mLastXDirection; 4881 private int mLastYDirection; 4882 private int mLastXKeyCode; 4883 private int mLastYKeyCode; 4884 4885 public SyntheticJoystickHandler() { 4886 super(true); 4887 } 4888 4889 @Override 4890 public void handleMessage(Message msg) { 4891 switch (msg.what) { 4892 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4893 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4894 KeyEvent oldEvent = (KeyEvent)msg.obj; 4895 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4896 SystemClock.uptimeMillis(), 4897 oldEvent.getRepeatCount() + 1); 4898 if (mAttachInfo.mHasWindowFocus) { 4899 enqueueInputEvent(e); 4900 Message m = obtainMessage(msg.what, e); 4901 m.setAsynchronous(true); 4902 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4903 } 4904 } break; 4905 } 4906 } 4907 4908 public void process(MotionEvent event) { 4909 switch(event.getActionMasked()) { 4910 case MotionEvent.ACTION_CANCEL: 4911 cancel(event); 4912 break; 4913 case MotionEvent.ACTION_MOVE: 4914 update(event, true); 4915 break; 4916 default: 4917 Log.w(mTag, "Unexpected action: " + event.getActionMasked()); 4918 } 4919 } 4920 4921 private void cancel(MotionEvent event) { 4922 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4923 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4924 update(event, false); 4925 } 4926 4927 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4928 final long time = event.getEventTime(); 4929 final int metaState = event.getMetaState(); 4930 final int deviceId = event.getDeviceId(); 4931 final int source = event.getSource(); 4932 4933 int xDirection = joystickAxisValueToDirection( 4934 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4935 if (xDirection == 0) { 4936 xDirection = joystickAxisValueToDirection(event.getX()); 4937 } 4938 4939 int yDirection = joystickAxisValueToDirection( 4940 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4941 if (yDirection == 0) { 4942 yDirection = joystickAxisValueToDirection(event.getY()); 4943 } 4944 4945 if (xDirection != mLastXDirection) { 4946 if (mLastXKeyCode != 0) { 4947 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4948 enqueueInputEvent(new KeyEvent(time, time, 4949 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4950 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4951 mLastXKeyCode = 0; 4952 } 4953 4954 mLastXDirection = xDirection; 4955 4956 if (xDirection != 0 && synthesizeNewKeys) { 4957 mLastXKeyCode = xDirection > 0 4958 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4959 final KeyEvent e = new KeyEvent(time, time, 4960 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4961 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4962 enqueueInputEvent(e); 4963 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4964 m.setAsynchronous(true); 4965 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4966 } 4967 } 4968 4969 if (yDirection != mLastYDirection) { 4970 if (mLastYKeyCode != 0) { 4971 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4972 enqueueInputEvent(new KeyEvent(time, time, 4973 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4974 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4975 mLastYKeyCode = 0; 4976 } 4977 4978 mLastYDirection = yDirection; 4979 4980 if (yDirection != 0 && synthesizeNewKeys) { 4981 mLastYKeyCode = yDirection > 0 4982 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4983 final KeyEvent e = new KeyEvent(time, time, 4984 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4985 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4986 enqueueInputEvent(e); 4987 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4988 m.setAsynchronous(true); 4989 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4990 } 4991 } 4992 } 4993 4994 private int joystickAxisValueToDirection(float value) { 4995 if (value >= 0.5f) { 4996 return 1; 4997 } else if (value <= -0.5f) { 4998 return -1; 4999 } else { 5000 return 0; 5001 } 5002 } 5003 } 5004 5005 /** 5006 * Creates dpad events from unhandled touch navigation movements. 5007 */ 5008 final class SyntheticTouchNavigationHandler extends Handler { 5009 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 5010 private static final boolean LOCAL_DEBUG = false; 5011 5012 // Assumed nominal width and height in millimeters of a touch navigation pad, 5013 // if no resolution information is available from the input system. 5014 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 5015 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 5016 5017 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 5018 5019 // The nominal distance traveled to move by one unit. 5020 private static final int TICK_DISTANCE_MILLIMETERS = 12; 5021 5022 // Minimum and maximum fling velocity in ticks per second. 5023 // The minimum velocity should be set such that we perform enough ticks per 5024 // second that the fling appears to be fluid. For example, if we set the minimum 5025 // to 2 ticks per second, then there may be up to half a second delay between the next 5026 // to last and last ticks which is noticeably discrete and jerky. This value should 5027 // probably not be set to anything less than about 4. 5028 // If fling accuracy is a problem then consider tuning the tick distance instead. 5029 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 5030 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 5031 5032 // Fling velocity decay factor applied after each new key is emitted. 5033 // This parameter controls the deceleration and overall duration of the fling. 5034 // The fling stops automatically when its velocity drops below the minimum 5035 // fling velocity defined above. 5036 private static final float FLING_TICK_DECAY = 0.8f; 5037 5038 /* The input device that we are tracking. */ 5039 5040 private int mCurrentDeviceId = -1; 5041 private int mCurrentSource; 5042 private boolean mCurrentDeviceSupported; 5043 5044 /* Configuration for the current input device. */ 5045 5046 // The scaled tick distance. A movement of this amount should generally translate 5047 // into a single dpad event in a given direction. 5048 private float mConfigTickDistance; 5049 5050 // The minimum and maximum scaled fling velocity. 5051 private float mConfigMinFlingVelocity; 5052 private float mConfigMaxFlingVelocity; 5053 5054 /* Tracking state. */ 5055 5056 // The velocity tracker for detecting flings. 5057 private VelocityTracker mVelocityTracker; 5058 5059 // The active pointer id, or -1 if none. 5060 private int mActivePointerId = -1; 5061 5062 // Location where tracking started. 5063 private float mStartX; 5064 private float mStartY; 5065 5066 // Most recently observed position. 5067 private float mLastX; 5068 private float mLastY; 5069 5070 // Accumulated movement delta since the last direction key was sent. 5071 private float mAccumulatedX; 5072 private float mAccumulatedY; 5073 5074 // Set to true if any movement was delivered to the app. 5075 // Implies that tap slop was exceeded. 5076 private boolean mConsumedMovement; 5077 5078 // The most recently sent key down event. 5079 // The keycode remains set until the direction changes or a fling ends 5080 // so that repeated key events may be generated as required. 5081 private long mPendingKeyDownTime; 5082 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5083 private int mPendingKeyRepeatCount; 5084 private int mPendingKeyMetaState; 5085 5086 // The current fling velocity while a fling is in progress. 5087 private boolean mFlinging; 5088 private float mFlingVelocity; 5089 5090 public SyntheticTouchNavigationHandler() { 5091 super(true); 5092 } 5093 5094 public void process(MotionEvent event) { 5095 // Update the current device information. 5096 final long time = event.getEventTime(); 5097 final int deviceId = event.getDeviceId(); 5098 final int source = event.getSource(); 5099 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 5100 finishKeys(time); 5101 finishTracking(time); 5102 mCurrentDeviceId = deviceId; 5103 mCurrentSource = source; 5104 mCurrentDeviceSupported = false; 5105 InputDevice device = event.getDevice(); 5106 if (device != null) { 5107 // In order to support an input device, we must know certain 5108 // characteristics about it, such as its size and resolution. 5109 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 5110 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 5111 if (xRange != null && yRange != null) { 5112 mCurrentDeviceSupported = true; 5113 5114 // Infer the resolution if it not actually known. 5115 float xRes = xRange.getResolution(); 5116 if (xRes <= 0) { 5117 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 5118 } 5119 float yRes = yRange.getResolution(); 5120 if (yRes <= 0) { 5121 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 5122 } 5123 float nominalRes = (xRes + yRes) * 0.5f; 5124 5125 // Precompute all of the configuration thresholds we will need. 5126 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 5127 mConfigMinFlingVelocity = 5128 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5129 mConfigMaxFlingVelocity = 5130 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5131 5132 if (LOCAL_DEBUG) { 5133 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 5134 + " (" + Integer.toHexString(mCurrentSource) + "): " 5135 + ", mConfigTickDistance=" + mConfigTickDistance 5136 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 5137 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 5138 } 5139 } 5140 } 5141 } 5142 if (!mCurrentDeviceSupported) { 5143 return; 5144 } 5145 5146 // Handle the event. 5147 final int action = event.getActionMasked(); 5148 switch (action) { 5149 case MotionEvent.ACTION_DOWN: { 5150 boolean caughtFling = mFlinging; 5151 finishKeys(time); 5152 finishTracking(time); 5153 mActivePointerId = event.getPointerId(0); 5154 mVelocityTracker = VelocityTracker.obtain(); 5155 mVelocityTracker.addMovement(event); 5156 mStartX = event.getX(); 5157 mStartY = event.getY(); 5158 mLastX = mStartX; 5159 mLastY = mStartY; 5160 mAccumulatedX = 0; 5161 mAccumulatedY = 0; 5162 5163 // If we caught a fling, then pretend that the tap slop has already 5164 // been exceeded to suppress taps whose only purpose is to stop the fling. 5165 mConsumedMovement = caughtFling; 5166 break; 5167 } 5168 5169 case MotionEvent.ACTION_MOVE: 5170 case MotionEvent.ACTION_UP: { 5171 if (mActivePointerId < 0) { 5172 break; 5173 } 5174 final int index = event.findPointerIndex(mActivePointerId); 5175 if (index < 0) { 5176 finishKeys(time); 5177 finishTracking(time); 5178 break; 5179 } 5180 5181 mVelocityTracker.addMovement(event); 5182 final float x = event.getX(index); 5183 final float y = event.getY(index); 5184 mAccumulatedX += x - mLastX; 5185 mAccumulatedY += y - mLastY; 5186 mLastX = x; 5187 mLastY = y; 5188 5189 // Consume any accumulated movement so far. 5190 final int metaState = event.getMetaState(); 5191 consumeAccumulatedMovement(time, metaState); 5192 5193 // Detect taps and flings. 5194 if (action == MotionEvent.ACTION_UP) { 5195 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5196 // It might be a fling. 5197 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 5198 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 5199 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 5200 if (!startFling(time, vx, vy)) { 5201 finishKeys(time); 5202 } 5203 } 5204 finishTracking(time); 5205 } 5206 break; 5207 } 5208 5209 case MotionEvent.ACTION_CANCEL: { 5210 finishKeys(time); 5211 finishTracking(time); 5212 break; 5213 } 5214 } 5215 } 5216 5217 public void cancel(MotionEvent event) { 5218 if (mCurrentDeviceId == event.getDeviceId() 5219 && mCurrentSource == event.getSource()) { 5220 final long time = event.getEventTime(); 5221 finishKeys(time); 5222 finishTracking(time); 5223 } 5224 } 5225 5226 private void finishKeys(long time) { 5227 cancelFling(); 5228 sendKeyUp(time); 5229 } 5230 5231 private void finishTracking(long time) { 5232 if (mActivePointerId >= 0) { 5233 mActivePointerId = -1; 5234 mVelocityTracker.recycle(); 5235 mVelocityTracker = null; 5236 } 5237 } 5238 5239 private void consumeAccumulatedMovement(long time, int metaState) { 5240 final float absX = Math.abs(mAccumulatedX); 5241 final float absY = Math.abs(mAccumulatedY); 5242 if (absX >= absY) { 5243 if (absX >= mConfigTickDistance) { 5244 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 5245 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 5246 mAccumulatedY = 0; 5247 mConsumedMovement = true; 5248 } 5249 } else { 5250 if (absY >= mConfigTickDistance) { 5251 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 5252 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 5253 mAccumulatedX = 0; 5254 mConsumedMovement = true; 5255 } 5256 } 5257 } 5258 5259 private float consumeAccumulatedMovement(long time, int metaState, 5260 float accumulator, int negativeKeyCode, int positiveKeyCode) { 5261 while (accumulator <= -mConfigTickDistance) { 5262 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 5263 accumulator += mConfigTickDistance; 5264 } 5265 while (accumulator >= mConfigTickDistance) { 5266 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 5267 accumulator -= mConfigTickDistance; 5268 } 5269 return accumulator; 5270 } 5271 5272 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 5273 if (mPendingKeyCode != keyCode) { 5274 sendKeyUp(time); 5275 mPendingKeyDownTime = time; 5276 mPendingKeyCode = keyCode; 5277 mPendingKeyRepeatCount = 0; 5278 } else { 5279 mPendingKeyRepeatCount += 1; 5280 } 5281 mPendingKeyMetaState = metaState; 5282 5283 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 5284 // but it doesn't quite make sense when simulating the events in this way. 5285 if (LOCAL_DEBUG) { 5286 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 5287 + ", repeatCount=" + mPendingKeyRepeatCount 5288 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5289 } 5290 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5291 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 5292 mPendingKeyMetaState, mCurrentDeviceId, 5293 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 5294 } 5295 5296 private void sendKeyUp(long time) { 5297 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5298 if (LOCAL_DEBUG) { 5299 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 5300 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5301 } 5302 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5303 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 5304 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 5305 mCurrentSource)); 5306 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5307 } 5308 } 5309 5310 private boolean startFling(long time, float vx, float vy) { 5311 if (LOCAL_DEBUG) { 5312 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 5313 + ", min=" + mConfigMinFlingVelocity); 5314 } 5315 5316 // Flings must be oriented in the same direction as the preceding movements. 5317 switch (mPendingKeyCode) { 5318 case KeyEvent.KEYCODE_DPAD_LEFT: 5319 if (-vx >= mConfigMinFlingVelocity 5320 && Math.abs(vy) < mConfigMinFlingVelocity) { 5321 mFlingVelocity = -vx; 5322 break; 5323 } 5324 return false; 5325 5326 case KeyEvent.KEYCODE_DPAD_RIGHT: 5327 if (vx >= mConfigMinFlingVelocity 5328 && Math.abs(vy) < mConfigMinFlingVelocity) { 5329 mFlingVelocity = vx; 5330 break; 5331 } 5332 return false; 5333 5334 case KeyEvent.KEYCODE_DPAD_UP: 5335 if (-vy >= mConfigMinFlingVelocity 5336 && Math.abs(vx) < mConfigMinFlingVelocity) { 5337 mFlingVelocity = -vy; 5338 break; 5339 } 5340 return false; 5341 5342 case KeyEvent.KEYCODE_DPAD_DOWN: 5343 if (vy >= mConfigMinFlingVelocity 5344 && Math.abs(vx) < mConfigMinFlingVelocity) { 5345 mFlingVelocity = vy; 5346 break; 5347 } 5348 return false; 5349 } 5350 5351 // Post the first fling event. 5352 mFlinging = postFling(time); 5353 return mFlinging; 5354 } 5355 5356 private boolean postFling(long time) { 5357 // The idea here is to estimate the time when the pointer would have 5358 // traveled one tick distance unit given the current fling velocity. 5359 // This effect creates continuity of motion. 5360 if (mFlingVelocity >= mConfigMinFlingVelocity) { 5361 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 5362 postAtTime(mFlingRunnable, time + delay); 5363 if (LOCAL_DEBUG) { 5364 Log.d(LOCAL_TAG, "Posted fling: velocity=" 5365 + mFlingVelocity + ", delay=" + delay 5366 + ", keyCode=" + mPendingKeyCode); 5367 } 5368 return true; 5369 } 5370 return false; 5371 } 5372 5373 private void cancelFling() { 5374 if (mFlinging) { 5375 removeCallbacks(mFlingRunnable); 5376 mFlinging = false; 5377 } 5378 } 5379 5380 private final Runnable mFlingRunnable = new Runnable() { 5381 @Override 5382 public void run() { 5383 final long time = SystemClock.uptimeMillis(); 5384 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5385 mFlingVelocity *= FLING_TICK_DECAY; 5386 if (!postFling(time)) { 5387 mFlinging = false; 5388 finishKeys(time); 5389 } 5390 } 5391 }; 5392 } 5393 5394 final class SyntheticKeyboardHandler { 5395 public void process(KeyEvent event) { 5396 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5397 return; 5398 } 5399 5400 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5401 final int keyCode = event.getKeyCode(); 5402 final int metaState = event.getMetaState(); 5403 5404 // Check for fallback actions specified by the key character map. 5405 KeyCharacterMap.FallbackAction fallbackAction = 5406 kcm.getFallbackAction(keyCode, metaState); 5407 if (fallbackAction != null) { 5408 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5409 KeyEvent fallbackEvent = KeyEvent.obtain( 5410 event.getDownTime(), event.getEventTime(), 5411 event.getAction(), fallbackAction.keyCode, 5412 event.getRepeatCount(), fallbackAction.metaState, 5413 event.getDeviceId(), event.getScanCode(), 5414 flags, event.getSource(), null); 5415 fallbackAction.recycle(); 5416 enqueueInputEvent(fallbackEvent); 5417 } 5418 } 5419 } 5420 5421 /** 5422 * Returns true if the key is used for keyboard navigation. 5423 * @param keyEvent The key event. 5424 * @return True if the key is used for keyboard navigation. 5425 */ 5426 private static boolean isNavigationKey(KeyEvent keyEvent) { 5427 switch (keyEvent.getKeyCode()) { 5428 case KeyEvent.KEYCODE_DPAD_LEFT: 5429 case KeyEvent.KEYCODE_DPAD_RIGHT: 5430 case KeyEvent.KEYCODE_DPAD_UP: 5431 case KeyEvent.KEYCODE_DPAD_DOWN: 5432 case KeyEvent.KEYCODE_DPAD_CENTER: 5433 case KeyEvent.KEYCODE_PAGE_UP: 5434 case KeyEvent.KEYCODE_PAGE_DOWN: 5435 case KeyEvent.KEYCODE_MOVE_HOME: 5436 case KeyEvent.KEYCODE_MOVE_END: 5437 case KeyEvent.KEYCODE_TAB: 5438 case KeyEvent.KEYCODE_SPACE: 5439 case KeyEvent.KEYCODE_ENTER: 5440 return true; 5441 } 5442 return false; 5443 } 5444 5445 /** 5446 * Returns true if the key is used for typing. 5447 * @param keyEvent The key event. 5448 * @return True if the key is used for typing. 5449 */ 5450 private static boolean isTypingKey(KeyEvent keyEvent) { 5451 return keyEvent.getUnicodeChar() > 0; 5452 } 5453 5454 /** 5455 * See if the key event means we should leave touch mode (and leave touch mode if so). 5456 * @param event The key event. 5457 * @return Whether this key event should be consumed (meaning the act of 5458 * leaving touch mode alone is considered the event). 5459 */ 5460 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5461 // Only relevant in touch mode. 5462 if (!mAttachInfo.mInTouchMode) { 5463 return false; 5464 } 5465 5466 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5467 final int action = event.getAction(); 5468 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5469 return false; 5470 } 5471 5472 // Don't leave touch mode if the IME told us not to. 5473 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5474 return false; 5475 } 5476 5477 // If the key can be used for keyboard navigation then leave touch mode 5478 // and select a focused view if needed (in ensureTouchMode). 5479 // When a new focused view is selected, we consume the navigation key because 5480 // navigation doesn't make much sense unless a view already has focus so 5481 // the key's purpose is to set focus. 5482 if (isNavigationKey(event)) { 5483 return ensureTouchMode(false); 5484 } 5485 5486 // If the key can be used for typing then leave touch mode 5487 // and select a focused view if needed (in ensureTouchMode). 5488 // Always allow the view to process the typing key. 5489 if (isTypingKey(event)) { 5490 ensureTouchMode(false); 5491 return false; 5492 } 5493 5494 return false; 5495 } 5496 5497 /* drag/drop */ 5498 void setLocalDragState(Object obj) { 5499 mLocalDragState = obj; 5500 } 5501 5502 private void handleDragEvent(DragEvent event) { 5503 // From the root, only drag start/end/location are dispatched. entered/exited 5504 // are determined and dispatched by the viewgroup hierarchy, who then report 5505 // that back here for ultimate reporting back to the framework. 5506 if (mView != null && mAdded) { 5507 final int what = event.mAction; 5508 5509 // Cache the drag description when the operation starts, then fill it in 5510 // on subsequent calls as a convenience 5511 if (what == DragEvent.ACTION_DRAG_STARTED) { 5512 mCurrentDragView = null; // Start the current-recipient tracking 5513 mDragDescription = event.mClipDescription; 5514 } else { 5515 event.mClipDescription = mDragDescription; 5516 } 5517 5518 if (what == DragEvent.ACTION_DRAG_EXITED) { 5519 // A direct EXITED event means that the window manager knows we've just crossed 5520 // a window boundary, so the current drag target within this one must have 5521 // just been exited. Send it the usual notifications and then we're done 5522 // for now. 5523 mView.dispatchDragEvent(event); 5524 } else { 5525 // For events with a [screen] location, translate into window coordinates 5526 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5527 mDragPoint.set(event.mX, event.mY); 5528 if (mTranslator != null) { 5529 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5530 } 5531 5532 if (mCurScrollY != 0) { 5533 mDragPoint.offset(0, mCurScrollY); 5534 } 5535 5536 event.mX = mDragPoint.x; 5537 event.mY = mDragPoint.y; 5538 } 5539 5540 // Remember who the current drag target is pre-dispatch 5541 final View prevDragView = mCurrentDragView; 5542 5543 // Now dispatch the drag/drop event 5544 boolean result = mView.dispatchDragEvent(event); 5545 5546 // If we changed apparent drag target, tell the OS about it 5547 if (prevDragView != mCurrentDragView) { 5548 try { 5549 if (prevDragView != null) { 5550 mWindowSession.dragRecipientExited(mWindow); 5551 } 5552 if (mCurrentDragView != null) { 5553 mWindowSession.dragRecipientEntered(mWindow); 5554 } 5555 } catch (RemoteException e) { 5556 Slog.e(mTag, "Unable to note drag target change"); 5557 } 5558 } 5559 5560 // Report the drop result when we're done 5561 if (what == DragEvent.ACTION_DROP) { 5562 mDragDescription = null; 5563 try { 5564 Log.i(mTag, "Reporting drop result: " + result); 5565 mWindowSession.reportDropResult(mWindow, result); 5566 } catch (RemoteException e) { 5567 Log.e(mTag, "Unable to report drop result"); 5568 } 5569 } 5570 5571 // When the drag operation ends, reset drag-related state 5572 if (what == DragEvent.ACTION_DRAG_ENDED) { 5573 setLocalDragState(null); 5574 mAttachInfo.mDragToken = null; 5575 if (mAttachInfo.mDragSurface != null) { 5576 mAttachInfo.mDragSurface.release(); 5577 mAttachInfo.mDragSurface = null; 5578 } 5579 } 5580 } 5581 } 5582 event.recycle(); 5583 } 5584 5585 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5586 if (mSeq != args.seq) { 5587 // The sequence has changed, so we need to update our value and make 5588 // sure to do a traversal afterward so the window manager is given our 5589 // most recent data. 5590 mSeq = args.seq; 5591 mAttachInfo.mForceReportNewAttributes = true; 5592 scheduleTraversals(); 5593 } 5594 if (mView == null) return; 5595 if (args.localChanges != 0) { 5596 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5597 } 5598 5599 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5600 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5601 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5602 mView.dispatchSystemUiVisibilityChanged(visibility); 5603 } 5604 } 5605 5606 public void handleDispatchWindowShown() { 5607 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5608 } 5609 5610 public void handleRequestKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 5611 Bundle data = new Bundle(); 5612 ArrayList<KeyboardShortcutGroup> list = new ArrayList<>(); 5613 if (mView != null) { 5614 mView.requestKeyboardShortcuts(list, deviceId); 5615 } 5616 data.putParcelableArrayList(WindowManager.PARCEL_KEY_SHORTCUTS_ARRAY, list); 5617 try { 5618 receiver.send(0, data); 5619 } catch (RemoteException e) { 5620 } 5621 } 5622 5623 public void getLastTouchPoint(Point outLocation) { 5624 outLocation.x = (int) mLastTouchPoint.x; 5625 outLocation.y = (int) mLastTouchPoint.y; 5626 } 5627 5628 public int getLastTouchSource() { 5629 return mLastTouchSource; 5630 } 5631 5632 public void setDragFocus(View newDragTarget) { 5633 if (mCurrentDragView != newDragTarget) { 5634 mCurrentDragView = newDragTarget; 5635 } 5636 } 5637 5638 private AudioManager getAudioManager() { 5639 if (mView == null) { 5640 throw new IllegalStateException("getAudioManager called when there is no mView"); 5641 } 5642 if (mAudioManager == null) { 5643 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5644 } 5645 return mAudioManager; 5646 } 5647 5648 public AccessibilityInteractionController getAccessibilityInteractionController() { 5649 if (mView == null) { 5650 throw new IllegalStateException("getAccessibilityInteractionController" 5651 + " called when there is no mView"); 5652 } 5653 if (mAccessibilityInteractionController == null) { 5654 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5655 } 5656 return mAccessibilityInteractionController; 5657 } 5658 5659 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5660 boolean insetsPending) throws RemoteException { 5661 5662 float appScale = mAttachInfo.mApplicationScale; 5663 boolean restore = false; 5664 if (params != null && mTranslator != null) { 5665 restore = true; 5666 params.backup(); 5667 mTranslator.translateWindowLayout(params); 5668 } 5669 if (params != null) { 5670 if (DBG) Log.d(mTag, "WindowLayout in layoutWindow:" + params); 5671 } 5672 mPendingConfiguration.seq = 0; 5673 //Log.d(mTag, ">>>>>> CALLING relayout"); 5674 if (params != null && mOrigWindowType != params.type) { 5675 // For compatibility with old apps, don't crash here. 5676 if (mTargetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5677 Slog.w(mTag, "Window type can not be changed after " 5678 + "the window is added; ignoring change of " + mView); 5679 params.type = mOrigWindowType; 5680 } 5681 } 5682 int relayoutResult = mWindowSession.relayout( 5683 mWindow, mSeq, params, 5684 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5685 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5686 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5687 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5688 mPendingStableInsets, mPendingOutsets, mPendingBackDropFrame, mPendingConfiguration, 5689 mSurface); 5690 5691 mPendingAlwaysConsumeNavBar = 5692 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_CONSUME_ALWAYS_NAV_BAR) != 0; 5693 5694 //Log.d(mTag, "<<<<<< BACK FROM relayout"); 5695 if (restore) { 5696 params.restore(); 5697 } 5698 5699 if (mTranslator != null) { 5700 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5701 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5702 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5703 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5704 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5705 } 5706 return relayoutResult; 5707 } 5708 5709 /** 5710 * {@inheritDoc} 5711 */ 5712 @Override 5713 public void playSoundEffect(int effectId) { 5714 checkThread(); 5715 5716 try { 5717 final AudioManager audioManager = getAudioManager(); 5718 5719 switch (effectId) { 5720 case SoundEffectConstants.CLICK: 5721 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5722 return; 5723 case SoundEffectConstants.NAVIGATION_DOWN: 5724 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5725 return; 5726 case SoundEffectConstants.NAVIGATION_LEFT: 5727 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5728 return; 5729 case SoundEffectConstants.NAVIGATION_RIGHT: 5730 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5731 return; 5732 case SoundEffectConstants.NAVIGATION_UP: 5733 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5734 return; 5735 default: 5736 throw new IllegalArgumentException("unknown effect id " + effectId + 5737 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5738 } 5739 } catch (IllegalStateException e) { 5740 // Exception thrown by getAudioManager() when mView is null 5741 Log.e(mTag, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5742 e.printStackTrace(); 5743 } 5744 } 5745 5746 /** 5747 * {@inheritDoc} 5748 */ 5749 @Override 5750 public boolean performHapticFeedback(int effectId, boolean always) { 5751 try { 5752 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5753 } catch (RemoteException e) { 5754 return false; 5755 } 5756 } 5757 5758 /** 5759 * {@inheritDoc} 5760 */ 5761 @Override 5762 public View focusSearch(View focused, int direction) { 5763 checkThread(); 5764 if (!(mView instanceof ViewGroup)) { 5765 return null; 5766 } 5767 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5768 } 5769 5770 public void debug() { 5771 mView.debug(); 5772 } 5773 5774 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5775 String innerPrefix = prefix + " "; 5776 writer.print(prefix); writer.println("ViewRoot:"); 5777 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5778 writer.print(" mRemoved="); writer.println(mRemoved); 5779 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5780 writer.println(mConsumeBatchedInputScheduled); 5781 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5782 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5783 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5784 writer.println(mPendingInputEventCount); 5785 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5786 writer.println(mProcessInputEventsScheduled); 5787 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5788 writer.print(mTraversalScheduled); 5789 writer.print(innerPrefix); writer.print("mIsAmbientMode="); 5790 writer.print(mIsAmbientMode); 5791 if (mTraversalScheduled) { 5792 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5793 } else { 5794 writer.println(); 5795 } 5796 mFirstInputStage.dump(innerPrefix, writer); 5797 5798 mChoreographer.dump(prefix, writer); 5799 5800 writer.print(prefix); writer.println("View Hierarchy:"); 5801 dumpViewHierarchy(innerPrefix, writer, mView); 5802 } 5803 5804 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5805 writer.print(prefix); 5806 if (view == null) { 5807 writer.println("null"); 5808 return; 5809 } 5810 writer.println(view.toString()); 5811 if (!(view instanceof ViewGroup)) { 5812 return; 5813 } 5814 ViewGroup grp = (ViewGroup)view; 5815 final int N = grp.getChildCount(); 5816 if (N <= 0) { 5817 return; 5818 } 5819 prefix = prefix + " "; 5820 for (int i=0; i<N; i++) { 5821 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5822 } 5823 } 5824 5825 public void dumpGfxInfo(int[] info) { 5826 info[0] = info[1] = 0; 5827 if (mView != null) { 5828 getGfxInfo(mView, info); 5829 } 5830 } 5831 5832 private static void getGfxInfo(View view, int[] info) { 5833 RenderNode renderNode = view.mRenderNode; 5834 info[0]++; 5835 if (renderNode != null) { 5836 info[1] += renderNode.getDebugSize(); 5837 } 5838 5839 if (view instanceof ViewGroup) { 5840 ViewGroup group = (ViewGroup) view; 5841 5842 int count = group.getChildCount(); 5843 for (int i = 0; i < count; i++) { 5844 getGfxInfo(group.getChildAt(i), info); 5845 } 5846 } 5847 } 5848 5849 /** 5850 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5851 * @return True, request has been queued. False, request has been completed. 5852 */ 5853 boolean die(boolean immediate) { 5854 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5855 // done by dispatchDetachedFromWindow will cause havoc on return. 5856 if (immediate && !mIsInTraversal) { 5857 doDie(); 5858 return false; 5859 } 5860 5861 if (!mIsDrawing) { 5862 destroyHardwareRenderer(); 5863 } else { 5864 Log.e(mTag, "Attempting to destroy the window while drawing!\n" + 5865 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5866 } 5867 mHandler.sendEmptyMessage(MSG_DIE); 5868 return true; 5869 } 5870 5871 void doDie() { 5872 checkThread(); 5873 if (LOCAL_LOGV) Log.v(mTag, "DIE in " + this + " of " + mSurface); 5874 synchronized (this) { 5875 if (mRemoved) { 5876 return; 5877 } 5878 mRemoved = true; 5879 if (mAdded) { 5880 dispatchDetachedFromWindow(); 5881 } 5882 5883 if (mAdded && !mFirst) { 5884 destroyHardwareRenderer(); 5885 5886 if (mView != null) { 5887 int viewVisibility = mView.getVisibility(); 5888 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5889 if (mWindowAttributesChanged || viewVisibilityChanged) { 5890 // If layout params have been changed, first give them 5891 // to the window manager to make sure it has the correct 5892 // animation info. 5893 try { 5894 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5895 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5896 mWindowSession.finishDrawing(mWindow); 5897 } 5898 } catch (RemoteException e) { 5899 } 5900 } 5901 5902 mSurface.release(); 5903 } 5904 } 5905 5906 mAdded = false; 5907 } 5908 WindowManagerGlobal.getInstance().doRemoveView(this); 5909 } 5910 5911 public void requestUpdateConfiguration(Configuration config) { 5912 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5913 mHandler.sendMessage(msg); 5914 } 5915 5916 public void loadSystemProperties() { 5917 mHandler.post(new Runnable() { 5918 @Override 5919 public void run() { 5920 // Profiling 5921 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5922 profileRendering(mAttachInfo.mHasWindowFocus); 5923 5924 // Hardware rendering 5925 if (mAttachInfo.mHardwareRenderer != null) { 5926 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5927 invalidate(); 5928 } 5929 } 5930 5931 // Layout debugging 5932 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5933 if (layout != mAttachInfo.mDebugLayout) { 5934 mAttachInfo.mDebugLayout = layout; 5935 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5936 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5937 } 5938 } 5939 } 5940 }); 5941 } 5942 5943 private void destroyHardwareRenderer() { 5944 ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5945 5946 if (hardwareRenderer != null) { 5947 if (mView != null) { 5948 hardwareRenderer.destroyHardwareResources(mView); 5949 } 5950 hardwareRenderer.destroy(); 5951 hardwareRenderer.setRequested(false); 5952 5953 mAttachInfo.mHardwareRenderer = null; 5954 mAttachInfo.mHardwareAccelerated = false; 5955 } 5956 } 5957 5958 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5959 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 5960 Configuration newConfig, Rect backDropFrame, boolean forceLayout, 5961 boolean alwaysConsumeNavBar) { 5962 if (DEBUG_LAYOUT) Log.v(mTag, "Resizing " + this + ": frame=" + frame.toShortString() 5963 + " contentInsets=" + contentInsets.toShortString() 5964 + " visibleInsets=" + visibleInsets.toShortString() 5965 + " reportDraw=" + reportDraw 5966 + " backDropFrame=" + backDropFrame); 5967 5968 // Tell all listeners that we are resizing the window so that the chrome can get 5969 // updated as fast as possible on a separate thread, 5970 if (mDragResizing) { 5971 boolean fullscreen = frame.equals(backDropFrame); 5972 synchronized (mWindowCallbacks) { 5973 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 5974 mWindowCallbacks.get(i).onWindowSizeIsChanging(backDropFrame, fullscreen, 5975 visibleInsets, stableInsets); 5976 } 5977 } 5978 } 5979 5980 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5981 if (mTranslator != null) { 5982 mTranslator.translateRectInScreenToAppWindow(frame); 5983 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5984 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5985 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5986 } 5987 SomeArgs args = SomeArgs.obtain(); 5988 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5989 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5990 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5991 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5992 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5993 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5994 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5995 args.arg7 = sameProcessCall ? new Rect(outsets) : outsets; 5996 args.arg8 = sameProcessCall ? new Rect(backDropFrame) : backDropFrame; 5997 args.argi1 = forceLayout ? 1 : 0; 5998 args.argi2 = alwaysConsumeNavBar ? 1 : 0; 5999 msg.obj = args; 6000 mHandler.sendMessage(msg); 6001 } 6002 6003 public void dispatchMoved(int newX, int newY) { 6004 if (DEBUG_LAYOUT) Log.v(mTag, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 6005 if (mTranslator != null) { 6006 PointF point = new PointF(newX, newY); 6007 mTranslator.translatePointInScreenToAppWindow(point); 6008 newX = (int) (point.x + 0.5); 6009 newY = (int) (point.y + 0.5); 6010 } 6011 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 6012 mHandler.sendMessage(msg); 6013 } 6014 6015 /** 6016 * Represents a pending input event that is waiting in a queue. 6017 * 6018 * Input events are processed in serial order by the timestamp specified by 6019 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 6020 * one input event to the application at a time and waits for the application 6021 * to finish handling it before delivering the next one. 6022 * 6023 * However, because the application or IME can synthesize and inject multiple 6024 * key events at a time without going through the input dispatcher, we end up 6025 * needing a queue on the application's side. 6026 */ 6027 private static final class QueuedInputEvent { 6028 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 6029 public static final int FLAG_DEFERRED = 1 << 1; 6030 public static final int FLAG_FINISHED = 1 << 2; 6031 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 6032 public static final int FLAG_RESYNTHESIZED = 1 << 4; 6033 public static final int FLAG_UNHANDLED = 1 << 5; 6034 6035 public QueuedInputEvent mNext; 6036 6037 public InputEvent mEvent; 6038 public InputEventReceiver mReceiver; 6039 public int mFlags; 6040 6041 public boolean shouldSkipIme() { 6042 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 6043 return true; 6044 } 6045 return mEvent instanceof MotionEvent 6046 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 6047 } 6048 6049 public boolean shouldSendToSynthesizer() { 6050 if ((mFlags & FLAG_UNHANDLED) != 0) { 6051 return true; 6052 } 6053 6054 return false; 6055 } 6056 6057 @Override 6058 public String toString() { 6059 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 6060 boolean hasPrevious = false; 6061 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 6062 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 6063 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 6064 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 6065 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 6066 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 6067 if (!hasPrevious) { 6068 sb.append("0"); 6069 } 6070 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 6071 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 6072 sb.append(", mEvent=" + mEvent + "}"); 6073 return sb.toString(); 6074 } 6075 6076 private boolean flagToString(String name, int flag, 6077 boolean hasPrevious, StringBuilder sb) { 6078 if ((mFlags & flag) != 0) { 6079 if (hasPrevious) { 6080 sb.append("|"); 6081 } 6082 sb.append(name); 6083 return true; 6084 } 6085 return hasPrevious; 6086 } 6087 } 6088 6089 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 6090 InputEventReceiver receiver, int flags) { 6091 QueuedInputEvent q = mQueuedInputEventPool; 6092 if (q != null) { 6093 mQueuedInputEventPoolSize -= 1; 6094 mQueuedInputEventPool = q.mNext; 6095 q.mNext = null; 6096 } else { 6097 q = new QueuedInputEvent(); 6098 } 6099 6100 q.mEvent = event; 6101 q.mReceiver = receiver; 6102 q.mFlags = flags; 6103 return q; 6104 } 6105 6106 private void recycleQueuedInputEvent(QueuedInputEvent q) { 6107 q.mEvent = null; 6108 q.mReceiver = null; 6109 6110 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 6111 mQueuedInputEventPoolSize += 1; 6112 q.mNext = mQueuedInputEventPool; 6113 mQueuedInputEventPool = q; 6114 } 6115 } 6116 6117 void enqueueInputEvent(InputEvent event) { 6118 enqueueInputEvent(event, null, 0, false); 6119 } 6120 6121 void enqueueInputEvent(InputEvent event, 6122 InputEventReceiver receiver, int flags, boolean processImmediately) { 6123 adjustInputEventForCompatibility(event); 6124 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 6125 6126 // Always enqueue the input event in order, regardless of its time stamp. 6127 // We do this because the application or the IME may inject key events 6128 // in response to touch events and we want to ensure that the injected keys 6129 // are processed in the order they were received and we cannot trust that 6130 // the time stamp of injected events are monotonic. 6131 QueuedInputEvent last = mPendingInputEventTail; 6132 if (last == null) { 6133 mPendingInputEventHead = q; 6134 mPendingInputEventTail = q; 6135 } else { 6136 last.mNext = q; 6137 mPendingInputEventTail = q; 6138 } 6139 mPendingInputEventCount += 1; 6140 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6141 mPendingInputEventCount); 6142 6143 if (processImmediately) { 6144 doProcessInputEvents(); 6145 } else { 6146 scheduleProcessInputEvents(); 6147 } 6148 } 6149 6150 private void scheduleProcessInputEvents() { 6151 if (!mProcessInputEventsScheduled) { 6152 mProcessInputEventsScheduled = true; 6153 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 6154 msg.setAsynchronous(true); 6155 mHandler.sendMessage(msg); 6156 } 6157 } 6158 6159 void doProcessInputEvents() { 6160 // Deliver all pending input events in the queue. 6161 while (mPendingInputEventHead != null) { 6162 QueuedInputEvent q = mPendingInputEventHead; 6163 mPendingInputEventHead = q.mNext; 6164 if (mPendingInputEventHead == null) { 6165 mPendingInputEventTail = null; 6166 } 6167 q.mNext = null; 6168 6169 mPendingInputEventCount -= 1; 6170 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6171 mPendingInputEventCount); 6172 6173 long eventTime = q.mEvent.getEventTimeNano(); 6174 long oldestEventTime = eventTime; 6175 if (q.mEvent instanceof MotionEvent) { 6176 MotionEvent me = (MotionEvent)q.mEvent; 6177 if (me.getHistorySize() > 0) { 6178 oldestEventTime = me.getHistoricalEventTimeNano(0); 6179 } 6180 } 6181 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 6182 6183 deliverInputEvent(q); 6184 } 6185 6186 // We are done processing all input events that we can process right now 6187 // so we can clear the pending flag immediately. 6188 if (mProcessInputEventsScheduled) { 6189 mProcessInputEventsScheduled = false; 6190 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 6191 } 6192 } 6193 6194 private void deliverInputEvent(QueuedInputEvent q) { 6195 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6196 q.mEvent.getSequenceNumber()); 6197 if (mInputEventConsistencyVerifier != null) { 6198 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 6199 } 6200 6201 InputStage stage; 6202 if (q.shouldSendToSynthesizer()) { 6203 stage = mSyntheticInputStage; 6204 } else { 6205 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 6206 } 6207 6208 if (stage != null) { 6209 stage.deliver(q); 6210 } else { 6211 finishInputEvent(q); 6212 } 6213 } 6214 6215 private void finishInputEvent(QueuedInputEvent q) { 6216 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6217 q.mEvent.getSequenceNumber()); 6218 6219 if (q.mReceiver != null) { 6220 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 6221 q.mReceiver.finishInputEvent(q.mEvent, handled); 6222 } else { 6223 q.mEvent.recycleIfNeededAfterDispatch(); 6224 } 6225 6226 recycleQueuedInputEvent(q); 6227 } 6228 6229 private void adjustInputEventForCompatibility(InputEvent e) { 6230 if (mTargetSdkVersion < Build.VERSION_CODES.M && e instanceof MotionEvent) { 6231 MotionEvent motion = (MotionEvent) e; 6232 final int mask = 6233 MotionEvent.BUTTON_STYLUS_PRIMARY | MotionEvent.BUTTON_STYLUS_SECONDARY; 6234 final int buttonState = motion.getButtonState(); 6235 final int compatButtonState = (buttonState & mask) >> 4; 6236 if (compatButtonState != 0) { 6237 motion.setButtonState(buttonState | compatButtonState); 6238 } 6239 } 6240 } 6241 6242 static boolean isTerminalInputEvent(InputEvent event) { 6243 if (event instanceof KeyEvent) { 6244 final KeyEvent keyEvent = (KeyEvent)event; 6245 return keyEvent.getAction() == KeyEvent.ACTION_UP; 6246 } else { 6247 final MotionEvent motionEvent = (MotionEvent)event; 6248 final int action = motionEvent.getAction(); 6249 return action == MotionEvent.ACTION_UP 6250 || action == MotionEvent.ACTION_CANCEL 6251 || action == MotionEvent.ACTION_HOVER_EXIT; 6252 } 6253 } 6254 6255 void scheduleConsumeBatchedInput() { 6256 if (!mConsumeBatchedInputScheduled) { 6257 mConsumeBatchedInputScheduled = true; 6258 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 6259 mConsumedBatchedInputRunnable, null); 6260 } 6261 } 6262 6263 void unscheduleConsumeBatchedInput() { 6264 if (mConsumeBatchedInputScheduled) { 6265 mConsumeBatchedInputScheduled = false; 6266 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 6267 mConsumedBatchedInputRunnable, null); 6268 } 6269 } 6270 6271 void scheduleConsumeBatchedInputImmediately() { 6272 if (!mConsumeBatchedInputImmediatelyScheduled) { 6273 unscheduleConsumeBatchedInput(); 6274 mConsumeBatchedInputImmediatelyScheduled = true; 6275 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 6276 } 6277 } 6278 6279 void doConsumeBatchedInput(long frameTimeNanos) { 6280 if (mConsumeBatchedInputScheduled) { 6281 mConsumeBatchedInputScheduled = false; 6282 if (mInputEventReceiver != null) { 6283 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 6284 && frameTimeNanos != -1) { 6285 // If we consumed a batch here, we want to go ahead and schedule the 6286 // consumption of batched input events on the next frame. Otherwise, we would 6287 // wait until we have more input events pending and might get starved by other 6288 // things occurring in the process. If the frame time is -1, however, then 6289 // we're in a non-batching mode, so there's no need to schedule this. 6290 scheduleConsumeBatchedInput(); 6291 } 6292 } 6293 doProcessInputEvents(); 6294 } 6295 } 6296 6297 final class TraversalRunnable implements Runnable { 6298 @Override 6299 public void run() { 6300 doTraversal(); 6301 } 6302 } 6303 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 6304 6305 final class WindowInputEventReceiver extends InputEventReceiver { 6306 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 6307 super(inputChannel, looper); 6308 } 6309 6310 @Override 6311 public void onInputEvent(InputEvent event) { 6312 enqueueInputEvent(event, this, 0, true); 6313 } 6314 6315 @Override 6316 public void onBatchedInputEventPending() { 6317 if (mUnbufferedInputDispatch) { 6318 super.onBatchedInputEventPending(); 6319 } else { 6320 scheduleConsumeBatchedInput(); 6321 } 6322 } 6323 6324 @Override 6325 public void dispose() { 6326 unscheduleConsumeBatchedInput(); 6327 super.dispose(); 6328 } 6329 } 6330 WindowInputEventReceiver mInputEventReceiver; 6331 6332 final class ConsumeBatchedInputRunnable implements Runnable { 6333 @Override 6334 public void run() { 6335 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 6336 } 6337 } 6338 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 6339 new ConsumeBatchedInputRunnable(); 6340 boolean mConsumeBatchedInputScheduled; 6341 6342 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 6343 @Override 6344 public void run() { 6345 doConsumeBatchedInput(-1); 6346 } 6347 } 6348 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 6349 new ConsumeBatchedInputImmediatelyRunnable(); 6350 boolean mConsumeBatchedInputImmediatelyScheduled; 6351 6352 final class InvalidateOnAnimationRunnable implements Runnable { 6353 private boolean mPosted; 6354 private final ArrayList<View> mViews = new ArrayList<View>(); 6355 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 6356 new ArrayList<AttachInfo.InvalidateInfo>(); 6357 private View[] mTempViews; 6358 private AttachInfo.InvalidateInfo[] mTempViewRects; 6359 6360 public void addView(View view) { 6361 synchronized (this) { 6362 mViews.add(view); 6363 postIfNeededLocked(); 6364 } 6365 } 6366 6367 public void addViewRect(AttachInfo.InvalidateInfo info) { 6368 synchronized (this) { 6369 mViewRects.add(info); 6370 postIfNeededLocked(); 6371 } 6372 } 6373 6374 public void removeView(View view) { 6375 synchronized (this) { 6376 mViews.remove(view); 6377 6378 for (int i = mViewRects.size(); i-- > 0; ) { 6379 AttachInfo.InvalidateInfo info = mViewRects.get(i); 6380 if (info.target == view) { 6381 mViewRects.remove(i); 6382 info.recycle(); 6383 } 6384 } 6385 6386 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 6387 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 6388 mPosted = false; 6389 } 6390 } 6391 } 6392 6393 @Override 6394 public void run() { 6395 final int viewCount; 6396 final int viewRectCount; 6397 synchronized (this) { 6398 mPosted = false; 6399 6400 viewCount = mViews.size(); 6401 if (viewCount != 0) { 6402 mTempViews = mViews.toArray(mTempViews != null 6403 ? mTempViews : new View[viewCount]); 6404 mViews.clear(); 6405 } 6406 6407 viewRectCount = mViewRects.size(); 6408 if (viewRectCount != 0) { 6409 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6410 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6411 mViewRects.clear(); 6412 } 6413 } 6414 6415 for (int i = 0; i < viewCount; i++) { 6416 mTempViews[i].invalidate(); 6417 mTempViews[i] = null; 6418 } 6419 6420 for (int i = 0; i < viewRectCount; i++) { 6421 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6422 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6423 info.recycle(); 6424 } 6425 } 6426 6427 private void postIfNeededLocked() { 6428 if (!mPosted) { 6429 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6430 mPosted = true; 6431 } 6432 } 6433 } 6434 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6435 new InvalidateOnAnimationRunnable(); 6436 6437 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6438 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6439 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6440 } 6441 6442 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6443 long delayMilliseconds) { 6444 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6445 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6446 } 6447 6448 public void dispatchInvalidateOnAnimation(View view) { 6449 mInvalidateOnAnimationRunnable.addView(view); 6450 } 6451 6452 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6453 mInvalidateOnAnimationRunnable.addViewRect(info); 6454 } 6455 6456 public void cancelInvalidate(View view) { 6457 mHandler.removeMessages(MSG_INVALIDATE, view); 6458 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6459 // them to the pool 6460 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6461 mInvalidateOnAnimationRunnable.removeView(view); 6462 } 6463 6464 public void dispatchInputEvent(InputEvent event) { 6465 dispatchInputEvent(event, null); 6466 } 6467 6468 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6469 SomeArgs args = SomeArgs.obtain(); 6470 args.arg1 = event; 6471 args.arg2 = receiver; 6472 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6473 msg.setAsynchronous(true); 6474 mHandler.sendMessage(msg); 6475 } 6476 6477 public void synthesizeInputEvent(InputEvent event) { 6478 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6479 msg.setAsynchronous(true); 6480 mHandler.sendMessage(msg); 6481 } 6482 6483 public void dispatchKeyFromIme(KeyEvent event) { 6484 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6485 msg.setAsynchronous(true); 6486 mHandler.sendMessage(msg); 6487 } 6488 6489 /** 6490 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6491 * 6492 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6493 * passes in. 6494 */ 6495 public void dispatchUnhandledInputEvent(InputEvent event) { 6496 if (event instanceof MotionEvent) { 6497 event = MotionEvent.obtain((MotionEvent) event); 6498 } 6499 synthesizeInputEvent(event); 6500 } 6501 6502 public void dispatchAppVisibility(boolean visible) { 6503 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6504 msg.arg1 = visible ? 1 : 0; 6505 mHandler.sendMessage(msg); 6506 } 6507 6508 public void dispatchGetNewSurface() { 6509 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6510 mHandler.sendMessage(msg); 6511 } 6512 6513 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6514 Message msg = Message.obtain(); 6515 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6516 msg.arg1 = hasFocus ? 1 : 0; 6517 msg.arg2 = inTouchMode ? 1 : 0; 6518 mHandler.sendMessage(msg); 6519 } 6520 6521 public void dispatchWindowShown() { 6522 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6523 } 6524 6525 public void dispatchCloseSystemDialogs(String reason) { 6526 Message msg = Message.obtain(); 6527 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6528 msg.obj = reason; 6529 mHandler.sendMessage(msg); 6530 } 6531 6532 public void dispatchDragEvent(DragEvent event) { 6533 final int what; 6534 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6535 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6536 mHandler.removeMessages(what); 6537 } else { 6538 what = MSG_DISPATCH_DRAG_EVENT; 6539 } 6540 Message msg = mHandler.obtainMessage(what, event); 6541 mHandler.sendMessage(msg); 6542 } 6543 6544 public void updatePointerIcon(float x, float y) { 6545 final int what = MSG_UPDATE_POINTER_ICON; 6546 mHandler.removeMessages(what); 6547 final long now = SystemClock.uptimeMillis(); 6548 final MotionEvent event = MotionEvent.obtain( 6549 0, now, MotionEvent.ACTION_HOVER_MOVE, x, y, 0); 6550 Message msg = mHandler.obtainMessage(what, event); 6551 mHandler.sendMessage(msg); 6552 } 6553 6554 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6555 int localValue, int localChanges) { 6556 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6557 args.seq = seq; 6558 args.globalVisibility = globalVisibility; 6559 args.localValue = localValue; 6560 args.localChanges = localChanges; 6561 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6562 } 6563 6564 public void dispatchCheckFocus() { 6565 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6566 // This will result in a call to checkFocus() below. 6567 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6568 } 6569 } 6570 6571 public void dispatchRequestKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 6572 mHandler.obtainMessage( 6573 MSG_REQUEST_KEYBOARD_SHORTCUTS, deviceId, 0, receiver).sendToTarget(); 6574 } 6575 6576 /** 6577 * Post a callback to send a 6578 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6579 * This event is send at most once every 6580 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6581 */ 6582 private void postSendWindowContentChangedCallback(View source, int changeType) { 6583 if (mSendWindowContentChangedAccessibilityEvent == null) { 6584 mSendWindowContentChangedAccessibilityEvent = 6585 new SendWindowContentChangedAccessibilityEvent(); 6586 } 6587 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6588 } 6589 6590 /** 6591 * Remove a posted callback to send a 6592 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6593 */ 6594 private void removeSendWindowContentChangedCallback() { 6595 if (mSendWindowContentChangedAccessibilityEvent != null) { 6596 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6597 } 6598 } 6599 6600 @Override 6601 public boolean showContextMenuForChild(View originalView) { 6602 return false; 6603 } 6604 6605 @Override 6606 public boolean showContextMenuForChild(View originalView, float x, float y) { 6607 return false; 6608 } 6609 6610 @Override 6611 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6612 return null; 6613 } 6614 6615 @Override 6616 public ActionMode startActionModeForChild( 6617 View originalView, ActionMode.Callback callback, int type) { 6618 return null; 6619 } 6620 6621 @Override 6622 public void createContextMenu(ContextMenu menu) { 6623 } 6624 6625 @Override 6626 public void childDrawableStateChanged(View child) { 6627 } 6628 6629 @Override 6630 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6631 if (mView == null || mStopped || mPausedForTransition) { 6632 return false; 6633 } 6634 // Intercept accessibility focus events fired by virtual nodes to keep 6635 // track of accessibility focus position in such nodes. 6636 final int eventType = event.getEventType(); 6637 switch (eventType) { 6638 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6639 final long sourceNodeId = event.getSourceNodeId(); 6640 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6641 sourceNodeId); 6642 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6643 if (source != null) { 6644 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6645 if (provider != null) { 6646 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6647 sourceNodeId); 6648 final AccessibilityNodeInfo node; 6649 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6650 node = provider.createAccessibilityNodeInfo( 6651 AccessibilityNodeProvider.HOST_VIEW_ID); 6652 } else { 6653 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6654 } 6655 setAccessibilityFocus(source, node); 6656 } 6657 } 6658 } break; 6659 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6660 final long sourceNodeId = event.getSourceNodeId(); 6661 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6662 sourceNodeId); 6663 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6664 if (source != null) { 6665 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6666 if (provider != null) { 6667 setAccessibilityFocus(null, null); 6668 } 6669 } 6670 } break; 6671 6672 6673 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6674 handleWindowContentChangedEvent(event); 6675 } break; 6676 } 6677 mAccessibilityManager.sendAccessibilityEvent(event); 6678 return true; 6679 } 6680 6681 /** 6682 * Updates the focused virtual view, when necessary, in response to a 6683 * content changed event. 6684 * <p> 6685 * This is necessary to get updated bounds after a position change. 6686 * 6687 * @param event an accessibility event of type 6688 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} 6689 */ 6690 private void handleWindowContentChangedEvent(AccessibilityEvent event) { 6691 final View focusedHost = mAccessibilityFocusedHost; 6692 if (focusedHost == null || mAccessibilityFocusedVirtualView == null) { 6693 // No virtual view focused, nothing to do here. 6694 return; 6695 } 6696 6697 final AccessibilityNodeProvider provider = focusedHost.getAccessibilityNodeProvider(); 6698 if (provider == null) { 6699 // Error state: virtual view with no provider. Clear focus. 6700 mAccessibilityFocusedHost = null; 6701 mAccessibilityFocusedVirtualView = null; 6702 focusedHost.clearAccessibilityFocusNoCallbacks(0); 6703 return; 6704 } 6705 6706 // We only care about change types that may affect the bounds of the 6707 // focused virtual view. 6708 final int changes = event.getContentChangeTypes(); 6709 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) == 0 6710 && changes != AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6711 return; 6712 } 6713 6714 final long eventSourceNodeId = event.getSourceNodeId(); 6715 final int changedViewId = AccessibilityNodeInfo.getAccessibilityViewId(eventSourceNodeId); 6716 6717 // Search up the tree for subtree containment. 6718 boolean hostInSubtree = false; 6719 View root = mAccessibilityFocusedHost; 6720 while (root != null && !hostInSubtree) { 6721 if (changedViewId == root.getAccessibilityViewId()) { 6722 hostInSubtree = true; 6723 } else { 6724 final ViewParent parent = root.getParent(); 6725 if (parent instanceof View) { 6726 root = (View) parent; 6727 } else { 6728 root = null; 6729 } 6730 } 6731 } 6732 6733 // We care only about changes in subtrees containing the host view. 6734 if (!hostInSubtree) { 6735 return; 6736 } 6737 6738 final long focusedSourceNodeId = mAccessibilityFocusedVirtualView.getSourceNodeId(); 6739 int focusedChildId = AccessibilityNodeInfo.getVirtualDescendantId(focusedSourceNodeId); 6740 if (focusedChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6741 // TODO: Should we clear the focused virtual view? 6742 focusedChildId = AccessibilityNodeProvider.HOST_VIEW_ID; 6743 } 6744 6745 // Refresh the node for the focused virtual view. 6746 final Rect oldBounds = mTempRect; 6747 mAccessibilityFocusedVirtualView.getBoundsInScreen(oldBounds); 6748 mAccessibilityFocusedVirtualView = provider.createAccessibilityNodeInfo(focusedChildId); 6749 if (mAccessibilityFocusedVirtualView == null) { 6750 // Error state: The node no longer exists. Clear focus. 6751 mAccessibilityFocusedHost = null; 6752 focusedHost.clearAccessibilityFocusNoCallbacks(0); 6753 6754 // This will probably fail, but try to keep the provider's internal 6755 // state consistent by clearing focus. 6756 provider.performAction(focusedChildId, 6757 AccessibilityAction.ACTION_CLEAR_ACCESSIBILITY_FOCUS.getId(), null); 6758 invalidateRectOnScreen(oldBounds); 6759 } else { 6760 // The node was refreshed, invalidate bounds if necessary. 6761 final Rect newBounds = mAccessibilityFocusedVirtualView.getBoundsInScreen(); 6762 if (!oldBounds.equals(newBounds)) { 6763 oldBounds.union(newBounds); 6764 invalidateRectOnScreen(oldBounds); 6765 } 6766 } 6767 } 6768 6769 @Override 6770 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6771 postSendWindowContentChangedCallback(source, changeType); 6772 } 6773 6774 @Override 6775 public boolean canResolveLayoutDirection() { 6776 return true; 6777 } 6778 6779 @Override 6780 public boolean isLayoutDirectionResolved() { 6781 return true; 6782 } 6783 6784 @Override 6785 public int getLayoutDirection() { 6786 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6787 } 6788 6789 @Override 6790 public boolean canResolveTextDirection() { 6791 return true; 6792 } 6793 6794 @Override 6795 public boolean isTextDirectionResolved() { 6796 return true; 6797 } 6798 6799 @Override 6800 public int getTextDirection() { 6801 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6802 } 6803 6804 @Override 6805 public boolean canResolveTextAlignment() { 6806 return true; 6807 } 6808 6809 @Override 6810 public boolean isTextAlignmentResolved() { 6811 return true; 6812 } 6813 6814 @Override 6815 public int getTextAlignment() { 6816 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6817 } 6818 6819 private View getCommonPredecessor(View first, View second) { 6820 if (mTempHashSet == null) { 6821 mTempHashSet = new HashSet<View>(); 6822 } 6823 HashSet<View> seen = mTempHashSet; 6824 seen.clear(); 6825 View firstCurrent = first; 6826 while (firstCurrent != null) { 6827 seen.add(firstCurrent); 6828 ViewParent firstCurrentParent = firstCurrent.mParent; 6829 if (firstCurrentParent instanceof View) { 6830 firstCurrent = (View) firstCurrentParent; 6831 } else { 6832 firstCurrent = null; 6833 } 6834 } 6835 View secondCurrent = second; 6836 while (secondCurrent != null) { 6837 if (seen.contains(secondCurrent)) { 6838 seen.clear(); 6839 return secondCurrent; 6840 } 6841 ViewParent secondCurrentParent = secondCurrent.mParent; 6842 if (secondCurrentParent instanceof View) { 6843 secondCurrent = (View) secondCurrentParent; 6844 } else { 6845 secondCurrent = null; 6846 } 6847 } 6848 seen.clear(); 6849 return null; 6850 } 6851 6852 void checkThread() { 6853 if (mThread != Thread.currentThread()) { 6854 throw new CalledFromWrongThreadException( 6855 "Only the original thread that created a view hierarchy can touch its views."); 6856 } 6857 } 6858 6859 @Override 6860 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6861 // ViewAncestor never intercepts touch event, so this can be a no-op 6862 } 6863 6864 @Override 6865 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6866 if (rectangle == null) { 6867 return scrollToRectOrFocus(null, immediate); 6868 } 6869 rectangle.offset(child.getLeft() - child.getScrollX(), 6870 child.getTop() - child.getScrollY()); 6871 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6872 mTempRect.set(rectangle); 6873 mTempRect.offset(0, -mCurScrollY); 6874 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6875 try { 6876 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6877 } catch (RemoteException re) { 6878 /* ignore */ 6879 } 6880 return scrolled; 6881 } 6882 6883 @Override 6884 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6885 // Do nothing. 6886 } 6887 6888 @Override 6889 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6890 return false; 6891 } 6892 6893 @Override 6894 public void onStopNestedScroll(View target) { 6895 } 6896 6897 @Override 6898 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6899 } 6900 6901 @Override 6902 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6903 int dxUnconsumed, int dyUnconsumed) { 6904 } 6905 6906 @Override 6907 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6908 } 6909 6910 @Override 6911 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6912 return false; 6913 } 6914 6915 @Override 6916 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6917 return false; 6918 } 6919 6920 @Override 6921 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6922 return false; 6923 } 6924 6925 /** 6926 * Force the window to report its next draw. 6927 * <p> 6928 * This method is only supposed to be used to speed up the interaction from SystemUI and window 6929 * manager when waiting for the first frame to be drawn when turning on the screen. DO NOT USE 6930 * unless you fully understand this interaction. 6931 * @hide 6932 */ 6933 public void setReportNextDraw() { 6934 mReportNextDraw = true; 6935 invalidate(); 6936 } 6937 6938 void changeCanvasOpacity(boolean opaque) { 6939 Log.d(mTag, "changeCanvasOpacity: opaque=" + opaque); 6940 if (mAttachInfo.mHardwareRenderer != null) { 6941 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6942 } 6943 } 6944 6945 class TakenSurfaceHolder extends BaseSurfaceHolder { 6946 @Override 6947 public boolean onAllowLockCanvas() { 6948 return mDrawingAllowed; 6949 } 6950 6951 @Override 6952 public void onRelayoutContainer() { 6953 // Not currently interesting -- from changing between fixed and layout size. 6954 } 6955 6956 @Override 6957 public void setFormat(int format) { 6958 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6959 } 6960 6961 @Override 6962 public void setType(int type) { 6963 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6964 } 6965 6966 @Override 6967 public void onUpdateSurface() { 6968 // We take care of format and type changes on our own. 6969 throw new IllegalStateException("Shouldn't be here"); 6970 } 6971 6972 @Override 6973 public boolean isCreating() { 6974 return mIsCreating; 6975 } 6976 6977 @Override 6978 public void setFixedSize(int width, int height) { 6979 throw new UnsupportedOperationException( 6980 "Currently only support sizing from layout"); 6981 } 6982 6983 @Override 6984 public void setKeepScreenOn(boolean screenOn) { 6985 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6986 } 6987 } 6988 6989 static class W extends IWindow.Stub { 6990 private final WeakReference<ViewRootImpl> mViewAncestor; 6991 private final IWindowSession mWindowSession; 6992 6993 W(ViewRootImpl viewAncestor) { 6994 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6995 mWindowSession = viewAncestor.mWindowSession; 6996 } 6997 6998 @Override 6999 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 7000 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 7001 Configuration newConfig, Rect backDropFrame, boolean forceLayout, 7002 boolean alwaysConsumeNavBar) { 7003 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7004 if (viewAncestor != null) { 7005 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 7006 visibleInsets, stableInsets, outsets, reportDraw, newConfig, backDropFrame, 7007 forceLayout, alwaysConsumeNavBar); 7008 } 7009 } 7010 7011 @Override 7012 public void moved(int newX, int newY) { 7013 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7014 if (viewAncestor != null) { 7015 viewAncestor.dispatchMoved(newX, newY); 7016 } 7017 } 7018 7019 @Override 7020 public void dispatchAppVisibility(boolean visible) { 7021 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7022 if (viewAncestor != null) { 7023 viewAncestor.dispatchAppVisibility(visible); 7024 } 7025 } 7026 7027 @Override 7028 public void dispatchGetNewSurface() { 7029 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7030 if (viewAncestor != null) { 7031 viewAncestor.dispatchGetNewSurface(); 7032 } 7033 } 7034 7035 @Override 7036 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 7037 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7038 if (viewAncestor != null) { 7039 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 7040 } 7041 } 7042 7043 private static int checkCallingPermission(String permission) { 7044 try { 7045 return ActivityManagerNative.getDefault().checkPermission( 7046 permission, Binder.getCallingPid(), Binder.getCallingUid()); 7047 } catch (RemoteException e) { 7048 return PackageManager.PERMISSION_DENIED; 7049 } 7050 } 7051 7052 @Override 7053 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 7054 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7055 if (viewAncestor != null) { 7056 final View view = viewAncestor.mView; 7057 if (view != null) { 7058 if (checkCallingPermission(Manifest.permission.DUMP) != 7059 PackageManager.PERMISSION_GRANTED) { 7060 throw new SecurityException("Insufficient permissions to invoke" 7061 + " executeCommand() from pid=" + Binder.getCallingPid() 7062 + ", uid=" + Binder.getCallingUid()); 7063 } 7064 7065 OutputStream clientStream = null; 7066 try { 7067 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 7068 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 7069 } catch (IOException e) { 7070 e.printStackTrace(); 7071 } finally { 7072 if (clientStream != null) { 7073 try { 7074 clientStream.close(); 7075 } catch (IOException e) { 7076 e.printStackTrace(); 7077 } 7078 } 7079 } 7080 } 7081 } 7082 } 7083 7084 @Override 7085 public void closeSystemDialogs(String reason) { 7086 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7087 if (viewAncestor != null) { 7088 viewAncestor.dispatchCloseSystemDialogs(reason); 7089 } 7090 } 7091 7092 @Override 7093 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 7094 boolean sync) { 7095 if (sync) { 7096 try { 7097 mWindowSession.wallpaperOffsetsComplete(asBinder()); 7098 } catch (RemoteException e) { 7099 } 7100 } 7101 } 7102 7103 @Override 7104 public void dispatchWallpaperCommand(String action, int x, int y, 7105 int z, Bundle extras, boolean sync) { 7106 if (sync) { 7107 try { 7108 mWindowSession.wallpaperCommandComplete(asBinder(), null); 7109 } catch (RemoteException e) { 7110 } 7111 } 7112 } 7113 7114 /* Drag/drop */ 7115 @Override 7116 public void dispatchDragEvent(DragEvent event) { 7117 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7118 if (viewAncestor != null) { 7119 viewAncestor.dispatchDragEvent(event); 7120 } 7121 } 7122 7123 @Override 7124 public void updatePointerIcon(float x, float y) { 7125 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7126 if (viewAncestor != null) { 7127 viewAncestor.updatePointerIcon(x, y); 7128 } 7129 } 7130 7131 @Override 7132 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 7133 int localValue, int localChanges) { 7134 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7135 if (viewAncestor != null) { 7136 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 7137 localValue, localChanges); 7138 } 7139 } 7140 7141 @Override 7142 public void dispatchWindowShown() { 7143 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7144 if (viewAncestor != null) { 7145 viewAncestor.dispatchWindowShown(); 7146 } 7147 } 7148 7149 @Override 7150 public void requestAppKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 7151 ViewRootImpl viewAncestor = mViewAncestor.get(); 7152 if (viewAncestor != null) { 7153 viewAncestor.dispatchRequestKeyboardShortcuts(receiver, deviceId); 7154 } 7155 } 7156 } 7157 7158 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 7159 public CalledFromWrongThreadException(String msg) { 7160 super(msg); 7161 } 7162 } 7163 7164 static HandlerActionQueue getRunQueue() { 7165 HandlerActionQueue rq = sRunQueues.get(); 7166 if (rq != null) { 7167 return rq; 7168 } 7169 rq = new HandlerActionQueue(); 7170 sRunQueues.set(rq); 7171 return rq; 7172 } 7173 7174 /** 7175 * Start a drag resizing which will inform all listeners that a window resize is taking place. 7176 */ 7177 private void startDragResizing(Rect initialBounds, boolean fullscreen, Rect systemInsets, 7178 Rect stableInsets, int resizeMode) { 7179 if (!mDragResizing) { 7180 mDragResizing = true; 7181 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7182 mWindowCallbacks.get(i).onWindowDragResizeStart(initialBounds, fullscreen, 7183 systemInsets, stableInsets, resizeMode); 7184 } 7185 mFullRedrawNeeded = true; 7186 } 7187 } 7188 7189 /** 7190 * End a drag resize which will inform all listeners that a window resize has ended. 7191 */ 7192 private void endDragResizing() { 7193 if (mDragResizing) { 7194 mDragResizing = false; 7195 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7196 mWindowCallbacks.get(i).onWindowDragResizeEnd(); 7197 } 7198 mFullRedrawNeeded = true; 7199 } 7200 } 7201 7202 private boolean updateContentDrawBounds() { 7203 boolean updated = false; 7204 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7205 updated |= mWindowCallbacks.get(i).onContentDrawn( 7206 mWindowAttributes.surfaceInsets.left, 7207 mWindowAttributes.surfaceInsets.top, 7208 mWidth, mHeight); 7209 } 7210 return updated | (mDragResizing && mReportNextDraw); 7211 } 7212 7213 private void requestDrawWindow() { 7214 if (mReportNextDraw) { 7215 mWindowDrawCountDown = new CountDownLatch(mWindowCallbacks.size()); 7216 } 7217 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7218 mWindowCallbacks.get(i).onRequestDraw(mReportNextDraw); 7219 } 7220 } 7221 7222 /** 7223 * Tells this instance that its corresponding activity has just relaunched. In this case, we 7224 * need to force a relayout of the window to make sure we get the correct bounds from window 7225 * manager. 7226 */ 7227 public void reportActivityRelaunched() { 7228 mActivityRelaunched = true; 7229 } 7230 7231 /** 7232 * Class for managing the accessibility interaction connection 7233 * based on the global accessibility state. 7234 */ 7235 final class AccessibilityInteractionConnectionManager 7236 implements AccessibilityStateChangeListener { 7237 @Override 7238 public void onAccessibilityStateChanged(boolean enabled) { 7239 if (enabled) { 7240 ensureConnection(); 7241 if (mAttachInfo.mHasWindowFocus) { 7242 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 7243 View focusedView = mView.findFocus(); 7244 if (focusedView != null && focusedView != mView) { 7245 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 7246 } 7247 } 7248 } else { 7249 ensureNoConnection(); 7250 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 7251 } 7252 } 7253 7254 public void ensureConnection() { 7255 final boolean registered = 7256 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7257 if (!registered) { 7258 mAttachInfo.mAccessibilityWindowId = 7259 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 7260 new AccessibilityInteractionConnection(ViewRootImpl.this)); 7261 } 7262 } 7263 7264 public void ensureNoConnection() { 7265 final boolean registered = 7266 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7267 if (registered) { 7268 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7269 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 7270 } 7271 } 7272 } 7273 7274 final class HighContrastTextManager implements HighTextContrastChangeListener { 7275 HighContrastTextManager() { 7276 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 7277 } 7278 @Override 7279 public void onHighTextContrastStateChanged(boolean enabled) { 7280 mAttachInfo.mHighContrastText = enabled; 7281 7282 // Destroy Displaylists so they can be recreated with high contrast recordings 7283 destroyHardwareResources(); 7284 7285 // Schedule redraw, which will rerecord + redraw all text 7286 invalidate(); 7287 } 7288 } 7289 7290 /** 7291 * This class is an interface this ViewAncestor provides to the 7292 * AccessibilityManagerService to the latter can interact with 7293 * the view hierarchy in this ViewAncestor. 7294 */ 7295 static final class AccessibilityInteractionConnection 7296 extends IAccessibilityInteractionConnection.Stub { 7297 private final WeakReference<ViewRootImpl> mViewRootImpl; 7298 7299 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 7300 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 7301 } 7302 7303 @Override 7304 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 7305 Region interactiveRegion, int interactionId, 7306 IAccessibilityInteractionConnectionCallback callback, int flags, 7307 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7308 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7309 if (viewRootImpl != null && viewRootImpl.mView != null) { 7310 viewRootImpl.getAccessibilityInteractionController() 7311 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 7312 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7313 interrogatingTid, spec); 7314 } else { 7315 // We cannot make the call and notify the caller so it does not wait. 7316 try { 7317 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7318 } catch (RemoteException re) { 7319 /* best effort - ignore */ 7320 } 7321 } 7322 } 7323 7324 @Override 7325 public void performAccessibilityAction(long accessibilityNodeId, int action, 7326 Bundle arguments, int interactionId, 7327 IAccessibilityInteractionConnectionCallback callback, int flags, 7328 int interrogatingPid, long interrogatingTid) { 7329 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7330 if (viewRootImpl != null && viewRootImpl.mView != null) { 7331 viewRootImpl.getAccessibilityInteractionController() 7332 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 7333 interactionId, callback, flags, interrogatingPid, interrogatingTid); 7334 } else { 7335 // We cannot make the call and notify the caller so it does not wait. 7336 try { 7337 callback.setPerformAccessibilityActionResult(false, interactionId); 7338 } catch (RemoteException re) { 7339 /* best effort - ignore */ 7340 } 7341 } 7342 } 7343 7344 @Override 7345 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 7346 String viewId, Region interactiveRegion, int interactionId, 7347 IAccessibilityInteractionConnectionCallback callback, int flags, 7348 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7349 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7350 if (viewRootImpl != null && viewRootImpl.mView != null) { 7351 viewRootImpl.getAccessibilityInteractionController() 7352 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 7353 viewId, interactiveRegion, interactionId, callback, flags, 7354 interrogatingPid, interrogatingTid, spec); 7355 } else { 7356 // We cannot make the call and notify the caller so it does not wait. 7357 try { 7358 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7359 } catch (RemoteException re) { 7360 /* best effort - ignore */ 7361 } 7362 } 7363 } 7364 7365 @Override 7366 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 7367 Region interactiveRegion, int interactionId, 7368 IAccessibilityInteractionConnectionCallback callback, int flags, 7369 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7370 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7371 if (viewRootImpl != null && viewRootImpl.mView != null) { 7372 viewRootImpl.getAccessibilityInteractionController() 7373 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 7374 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7375 interrogatingTid, spec); 7376 } else { 7377 // We cannot make the call and notify the caller so it does not wait. 7378 try { 7379 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7380 } catch (RemoteException re) { 7381 /* best effort - ignore */ 7382 } 7383 } 7384 } 7385 7386 @Override 7387 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 7388 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7389 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7390 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7391 if (viewRootImpl != null && viewRootImpl.mView != null) { 7392 viewRootImpl.getAccessibilityInteractionController() 7393 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 7394 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7395 spec); 7396 } else { 7397 // We cannot make the call and notify the caller so it does not wait. 7398 try { 7399 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7400 } catch (RemoteException re) { 7401 /* best effort - ignore */ 7402 } 7403 } 7404 } 7405 7406 @Override 7407 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 7408 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7409 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7410 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7411 if (viewRootImpl != null && viewRootImpl.mView != null) { 7412 viewRootImpl.getAccessibilityInteractionController() 7413 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 7414 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7415 spec); 7416 } else { 7417 // We cannot make the call and notify the caller so it does not wait. 7418 try { 7419 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7420 } catch (RemoteException re) { 7421 /* best effort - ignore */ 7422 } 7423 } 7424 } 7425 } 7426 7427 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 7428 private int mChangeTypes = 0; 7429 7430 public View mSource; 7431 public long mLastEventTimeMillis; 7432 7433 @Override 7434 public void run() { 7435 // The accessibility may be turned off while we were waiting so check again. 7436 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 7437 mLastEventTimeMillis = SystemClock.uptimeMillis(); 7438 AccessibilityEvent event = AccessibilityEvent.obtain(); 7439 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 7440 event.setContentChangeTypes(mChangeTypes); 7441 mSource.sendAccessibilityEventUnchecked(event); 7442 } else { 7443 mLastEventTimeMillis = 0; 7444 } 7445 // In any case reset to initial state. 7446 mSource.resetSubtreeAccessibilityStateChanged(); 7447 mSource = null; 7448 mChangeTypes = 0; 7449 } 7450 7451 public void runOrPost(View source, int changeType) { 7452 if (mSource != null) { 7453 // If there is no common predecessor, then mSource points to 7454 // a removed view, hence in this case always prefer the source. 7455 View predecessor = getCommonPredecessor(mSource, source); 7456 mSource = (predecessor != null) ? predecessor : source; 7457 mChangeTypes |= changeType; 7458 return; 7459 } 7460 mSource = source; 7461 mChangeTypes = changeType; 7462 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 7463 final long minEventIntevalMillis = 7464 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 7465 if (timeSinceLastMillis >= minEventIntevalMillis) { 7466 mSource.removeCallbacks(this); 7467 run(); 7468 } else { 7469 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 7470 } 7471 } 7472 } 7473 } 7474
