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