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