ViewRootImpl.java revision b72be59a6a5ca5fae3ede2470f1662598098b666
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 17package android.view; 18 19import android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.Context; 25import android.content.pm.PackageManager; 26import android.content.res.CompatibilityInfo; 27import android.content.res.Configuration; 28import android.content.res.Resources; 29import android.graphics.Canvas; 30import android.graphics.Matrix; 31import android.graphics.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.hardware.display.DisplayManager; 40import android.hardware.display.DisplayManager.DisplayListener; 41import android.media.AudioManager; 42import android.os.Binder; 43import android.os.Build; 44import android.os.Bundle; 45import android.os.Debug; 46import android.os.Handler; 47import android.os.Looper; 48import android.os.Message; 49import android.os.ParcelFileDescriptor; 50import android.os.Process; 51import android.os.RemoteException; 52import android.os.SystemClock; 53import android.os.SystemProperties; 54import android.os.Trace; 55import android.util.AndroidRuntimeException; 56import android.util.DisplayMetrics; 57import android.util.Log; 58import android.util.Slog; 59import android.util.TypedValue; 60import android.view.Surface.OutOfResourcesException; 61import android.view.View.AttachInfo; 62import android.view.View.MeasureSpec; 63import android.view.accessibility.AccessibilityEvent; 64import android.view.accessibility.AccessibilityManager; 65import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 66import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 67import android.view.accessibility.AccessibilityNodeInfo; 68import android.view.accessibility.AccessibilityNodeProvider; 69import android.view.accessibility.IAccessibilityInteractionConnection; 70import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 71import android.view.animation.AccelerateDecelerateInterpolator; 72import android.view.animation.Interpolator; 73import android.view.inputmethod.InputConnection; 74import android.view.inputmethod.InputMethodManager; 75import android.widget.Scroller; 76 77import com.android.internal.R; 78import com.android.internal.os.SomeArgs; 79import com.android.internal.policy.PolicyManager; 80import com.android.internal.view.BaseSurfaceHolder; 81import com.android.internal.view.RootViewSurfaceTaker; 82 83import java.io.FileDescriptor; 84import java.io.IOException; 85import java.io.OutputStream; 86import java.io.PrintWriter; 87import java.lang.ref.WeakReference; 88import java.util.ArrayList; 89import 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"}) 99public 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 private 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 private 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; 336 337 /** 338 * Consistency verifier for debugging purposes. 339 */ 340 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 341 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 342 new InputEventConsistencyVerifier(this, 0) : null; 343 344 static final class SystemUiVisibilityInfo { 345 int seq; 346 int globalVisibility; 347 int localValue; 348 int localChanges; 349 } 350 351 public ViewRootImpl(Context context, Display display) { 352 mContext = context; 353 mWindowSession = WindowManagerGlobal.getWindowSession(); 354 mDisplay = display; 355 mBasePackageName = context.getBasePackageName(); 356 357 mDisplayAdjustments = display.getDisplayAdjustments(); 358 359 mThread = Thread.currentThread(); 360 mLocation = new WindowLeaked(null); 361 mLocation.fillInStackTrace(); 362 mWidth = -1; 363 mHeight = -1; 364 mDirty = new Rect(); 365 mTempRect = new Rect(); 366 mVisRect = new Rect(); 367 mWinFrame = new Rect(); 368 mWindow = new W(this); 369 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 370 mViewVisibility = View.GONE; 371 mTransparentRegion = new Region(); 372 mPreviousTransparentRegion = new Region(); 373 mFirst = true; // true for the first time the view is added 374 mAdded = false; 375 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 376 mAccessibilityManager = AccessibilityManager.getInstance(context); 377 mAccessibilityInteractionConnectionManager = 378 new AccessibilityInteractionConnectionManager(); 379 mAccessibilityManager.addAccessibilityStateChangeListener( 380 mAccessibilityInteractionConnectionManager); 381 mHighContrastTextManager = new HighContrastTextManager(); 382 mAccessibilityManager.addHighTextContrastStateChangeListener( 383 mHighContrastTextManager); 384 mViewConfiguration = ViewConfiguration.get(context); 385 mDensity = context.getResources().getDisplayMetrics().densityDpi; 386 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 387 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 388 mChoreographer = Choreographer.getInstance(); 389 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 390 loadSystemProperties(); 391 } 392 393 public static void addFirstDrawHandler(Runnable callback) { 394 synchronized (sFirstDrawHandlers) { 395 if (!sFirstDrawComplete) { 396 sFirstDrawHandlers.add(callback); 397 } 398 } 399 } 400 401 public static void addConfigCallback(ComponentCallbacks callback) { 402 synchronized (sConfigCallbacks) { 403 sConfigCallbacks.add(callback); 404 } 405 } 406 407 // FIXME for perf testing only 408 private boolean mProfile = false; 409 410 /** 411 * Call this to profile the next traversal call. 412 * FIXME for perf testing only. Remove eventually 413 */ 414 public void profile() { 415 mProfile = true; 416 } 417 418 /** 419 * Indicates whether we are in touch mode. Calling this method triggers an IPC 420 * call and should be avoided whenever possible. 421 * 422 * @return True, if the device is in touch mode, false otherwise. 423 * 424 * @hide 425 */ 426 static boolean isInTouchMode() { 427 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 428 if (windowSession != null) { 429 try { 430 return windowSession.getInTouchMode(); 431 } catch (RemoteException e) { 432 } 433 } 434 return false; 435 } 436 437 /** 438 * We have one child 439 */ 440 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 441 synchronized (this) { 442 if (mView == null) { 443 mView = view; 444 445 mAttachInfo.mDisplayState = mDisplay.getState(); 446 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 447 448 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 449 mFallbackEventHandler.setView(view); 450 mWindowAttributes.copyFrom(attrs); 451 if (mWindowAttributes.packageName == null) { 452 mWindowAttributes.packageName = mBasePackageName; 453 } 454 attrs = mWindowAttributes; 455 // Keep track of the actual window flags supplied by the client. 456 mClientWindowLayoutFlags = attrs.flags; 457 458 setAccessibilityFocus(null, null); 459 460 if (view instanceof RootViewSurfaceTaker) { 461 mSurfaceHolderCallback = 462 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 463 if (mSurfaceHolderCallback != null) { 464 mSurfaceHolder = new TakenSurfaceHolder(); 465 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 466 } 467 } 468 469 // Compute surface insets required to draw at specified Z value. 470 // TODO: Use real shadow insets for a constant max Z. 471 if (view.isHardwareAccelerated()) { 472 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 473 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 474 } else { 475 // Software accelerated windows can't use insets. 476 attrs.surfaceInsets.setEmpty(); 477 } 478 479 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 480 mTranslator = compatibilityInfo.getTranslator(); 481 mDisplayAdjustments.setActivityToken(attrs.token); 482 483 // If the application owns the surface, don't enable hardware acceleration 484 if (mSurfaceHolder == null) { 485 enableHardwareAcceleration(attrs); 486 } 487 488 boolean restore = false; 489 if (mTranslator != null) { 490 mSurface.setCompatibilityTranslator(mTranslator); 491 restore = true; 492 attrs.backup(); 493 mTranslator.translateWindowLayout(attrs); 494 } 495 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 496 497 if (!compatibilityInfo.supportsScreen()) { 498 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 499 mLastInCompatMode = true; 500 } 501 502 mSoftInputMode = attrs.softInputMode; 503 mWindowAttributesChanged = true; 504 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 505 mAttachInfo.mRootView = view; 506 mAttachInfo.mScalingRequired = mTranslator != null; 507 mAttachInfo.mApplicationScale = 508 mTranslator == null ? 1.0f : mTranslator.applicationScale; 509 if (panelParentView != null) { 510 mAttachInfo.mPanelParentWindowToken 511 = panelParentView.getApplicationWindowToken(); 512 } 513 mAdded = true; 514 int res; /* = WindowManagerImpl.ADD_OKAY; */ 515 516 // Schedule the first layout -before- adding to the window 517 // manager, to make sure we do the relayout before receiving 518 // any other events from the system. 519 requestLayout(); 520 if ((mWindowAttributes.inputFeatures 521 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 522 mInputChannel = new InputChannel(); 523 } 524 try { 525 mOrigWindowType = mWindowAttributes.type; 526 mAttachInfo.mRecomputeGlobalAttributes = true; 527 collectViewAttributes(); 528 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 529 getHostVisibility(), mDisplay.getDisplayId(), 530 mAttachInfo.mContentInsets, mInputChannel); 531 } catch (RemoteException e) { 532 mAdded = false; 533 mView = null; 534 mAttachInfo.mRootView = null; 535 mInputChannel = null; 536 mFallbackEventHandler.setView(null); 537 unscheduleTraversals(); 538 setAccessibilityFocus(null, null); 539 throw new RuntimeException("Adding window failed", e); 540 } finally { 541 if (restore) { 542 attrs.restore(); 543 } 544 } 545 546 if (mTranslator != null) { 547 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 548 } 549 mPendingOverscanInsets.set(0, 0, 0, 0); 550 mPendingContentInsets.set(mAttachInfo.mContentInsets); 551 mPendingStableInsets.set(mAttachInfo.mStableInsets); 552 mPendingVisibleInsets.set(0, 0, 0, 0); 553 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 554 if (res < WindowManagerGlobal.ADD_OKAY) { 555 mAttachInfo.mRootView = null; 556 mAdded = false; 557 mFallbackEventHandler.setView(null); 558 unscheduleTraversals(); 559 setAccessibilityFocus(null, null); 560 switch (res) { 561 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 562 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 563 throw new WindowManager.BadTokenException( 564 "Unable to add window -- token " + attrs.token 565 + " is not valid; is your activity running?"); 566 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 567 throw new WindowManager.BadTokenException( 568 "Unable to add window -- token " + attrs.token 569 + " is not for an application"); 570 case WindowManagerGlobal.ADD_APP_EXITING: 571 throw new WindowManager.BadTokenException( 572 "Unable to add window -- app for token " + attrs.token 573 + " is exiting"); 574 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 575 throw new WindowManager.BadTokenException( 576 "Unable to add window -- window " + mWindow 577 + " has already been added"); 578 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 579 // Silently ignore -- we would have just removed it 580 // right away, anyway. 581 return; 582 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 583 throw new WindowManager.BadTokenException( 584 "Unable to add window " + mWindow + 585 " -- another window of this type already exists"); 586 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 587 throw new WindowManager.BadTokenException( 588 "Unable to add window " + mWindow + 589 " -- permission denied for this window type"); 590 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 591 throw new WindowManager.InvalidDisplayException( 592 "Unable to add window " + mWindow + 593 " -- the specified display can not be found"); 594 } 595 throw new RuntimeException( 596 "Unable to add window -- unknown error code " + res); 597 } 598 599 if (view instanceof RootViewSurfaceTaker) { 600 mInputQueueCallback = 601 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 602 } 603 if (mInputChannel != null) { 604 if (mInputQueueCallback != null) { 605 mInputQueue = new InputQueue(); 606 mInputQueueCallback.onInputQueueCreated(mInputQueue); 607 } 608 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 609 Looper.myLooper()); 610 } 611 612 view.assignParent(this); 613 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 614 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 615 616 if (mAccessibilityManager.isEnabled()) { 617 mAccessibilityInteractionConnectionManager.ensureConnection(); 618 } 619 620 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 621 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 622 } 623 624 // Set up the input pipeline. 625 CharSequence counterSuffix = attrs.getTitle(); 626 mSyntheticInputStage = new SyntheticInputStage(); 627 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 628 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 629 "aq:native-post-ime:" + counterSuffix); 630 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 631 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 632 "aq:ime:" + counterSuffix); 633 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 634 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 635 "aq:native-pre-ime:" + counterSuffix); 636 637 mFirstInputStage = nativePreImeStage; 638 mFirstPostImeInputStage = earlyPostImeStage; 639 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 640 } 641 } 642 } 643 644 /** Whether the window is in local focus mode or not */ 645 private boolean isInLocalFocusMode() { 646 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 647 } 648 649 void destroyHardwareResources() { 650 if (mAttachInfo.mHardwareRenderer != null) { 651 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 652 mAttachInfo.mHardwareRenderer.destroy(); 653 } 654 } 655 656 public void detachFunctor(long functor) { 657 // TODO: Make the resize buffer some other way to not need this block 658 mBlockResizeBuffer = true; 659 if (mAttachInfo.mHardwareRenderer != null) { 660 // Fence so that any pending invokeFunctor() messages will be processed 661 // before we return from detachFunctor. 662 mAttachInfo.mHardwareRenderer.stopDrawing(); 663 } 664 } 665 666 /** 667 * Schedules the functor for execution in either kModeProcess or 668 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 669 * 670 * @param functor The native functor to invoke 671 * @param waitForCompletion If true, this will not return until the functor 672 * has invoked. If false, the functor may be invoked 673 * asynchronously. 674 */ 675 public void invokeFunctor(long functor, boolean waitForCompletion) { 676 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 677 } 678 679 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 680 mAttachInfo.mHardwareAccelerated = false; 681 mAttachInfo.mHardwareAccelerationRequested = false; 682 683 // Don't enable hardware acceleration when the application is in compatibility mode 684 if (mTranslator != null) return; 685 686 // Try to enable hardware acceleration if requested 687 final boolean hardwareAccelerated = 688 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 689 690 if (hardwareAccelerated) { 691 if (!HardwareRenderer.isAvailable()) { 692 return; 693 } 694 695 // Persistent processes (including the system) should not do 696 // accelerated rendering on low-end devices. In that case, 697 // sRendererDisabled will be set. In addition, the system process 698 // itself should never do accelerated rendering. In that case, both 699 // sRendererDisabled and sSystemRendererDisabled are set. When 700 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 701 // can be used by code on the system process to escape that and enable 702 // HW accelerated drawing. (This is basically for the lock screen.) 703 704 final boolean fakeHwAccelerated = (attrs.privateFlags & 705 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 706 final boolean forceHwAccelerated = (attrs.privateFlags & 707 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 708 709 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 710 && forceHwAccelerated)) { 711 if (mAttachInfo.mHardwareRenderer != null) { 712 mAttachInfo.mHardwareRenderer.destroy(); 713 } 714 715 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 716 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(mContext, translucent); 717 if (mAttachInfo.mHardwareRenderer != null) { 718 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 719 mAttachInfo.mHardwareAccelerated = 720 mAttachInfo.mHardwareAccelerationRequested = true; 721 } 722 } else if (fakeHwAccelerated) { 723 // The window had wanted to use hardware acceleration, but this 724 // is not allowed in its process. By setting this flag, it can 725 // still render as if it was accelerated. This is basically for 726 // the preview windows the window manager shows for launching 727 // applications, so they will look more like the app being launched. 728 mAttachInfo.mHardwareAccelerationRequested = true; 729 } 730 } 731 } 732 733 public View getView() { 734 return mView; 735 } 736 737 final WindowLeaked getLocation() { 738 return mLocation; 739 } 740 741 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 742 synchronized (this) { 743 int oldSoftInputMode = mWindowAttributes.softInputMode; 744 // Keep track of the actual window flags supplied by the client. 745 mClientWindowLayoutFlags = attrs.flags; 746 // preserve compatible window flag if exists. 747 int compatibleWindowFlag = mWindowAttributes.privateFlags 748 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 749 // transfer over system UI visibility values as they carry current state. 750 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 751 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 752 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 753 if ((mWindowAttributesChangesFlag 754 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 755 // Recompute system ui visibility. 756 mAttachInfo.mRecomputeGlobalAttributes = true; 757 } 758 if (mWindowAttributes.packageName == null) { 759 mWindowAttributes.packageName = mBasePackageName; 760 } 761 mWindowAttributes.privateFlags |= compatibleWindowFlag; 762 763 applyKeepScreenOnFlag(mWindowAttributes); 764 765 if (newView) { 766 mSoftInputMode = attrs.softInputMode; 767 requestLayout(); 768 } 769 // Don't lose the mode we last auto-computed. 770 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 771 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 772 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 773 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 774 | (oldSoftInputMode 775 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 776 } 777 mWindowAttributesChanged = true; 778 scheduleTraversals(); 779 } 780 } 781 782 void handleAppVisibility(boolean visible) { 783 if (mAppVisible != visible) { 784 mAppVisible = visible; 785 scheduleTraversals(); 786 } 787 } 788 789 void handleGetNewSurface() { 790 mNewSurfaceNeeded = true; 791 mFullRedrawNeeded = true; 792 scheduleTraversals(); 793 } 794 795 private final DisplayListener mDisplayListener = new DisplayListener() { 796 @Override 797 public void onDisplayChanged(int displayId) { 798 if (mView != null && mDisplay.getDisplayId() == displayId) { 799 final int oldDisplayState = mAttachInfo.mDisplayState; 800 final int newDisplayState = mDisplay.getState(); 801 if (oldDisplayState != newDisplayState) { 802 mAttachInfo.mDisplayState = newDisplayState; 803 if (oldDisplayState != Display.STATE_UNKNOWN) { 804 final int oldScreenState = toViewScreenState(oldDisplayState); 805 final int newScreenState = toViewScreenState(newDisplayState); 806 if (oldScreenState != newScreenState) { 807 mView.dispatchScreenStateChanged(newScreenState); 808 } 809 if (oldDisplayState == Display.STATE_OFF) { 810 // Draw was suppressed so we need to for it to happen here. 811 mFullRedrawNeeded = true; 812 scheduleTraversals(); 813 } 814 } 815 } 816 } 817 } 818 819 @Override 820 public void onDisplayRemoved(int displayId) { 821 } 822 823 @Override 824 public void onDisplayAdded(int displayId) { 825 } 826 827 private int toViewScreenState(int displayState) { 828 return displayState == Display.STATE_OFF ? 829 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 830 } 831 }; 832 833 @Override 834 public void requestFitSystemWindows() { 835 checkThread(); 836 mApplyInsetsRequested = true; 837 scheduleTraversals(); 838 } 839 840 @Override 841 public void requestLayout() { 842 if (!mHandlingLayoutInLayoutRequest) { 843 checkThread(); 844 mLayoutRequested = true; 845 scheduleTraversals(); 846 } 847 } 848 849 @Override 850 public boolean isLayoutRequested() { 851 return mLayoutRequested; 852 } 853 854 void invalidate() { 855 mDirty.set(0, 0, mWidth, mHeight); 856 if (!mWillDrawSoon) { 857 scheduleTraversals(); 858 } 859 } 860 861 void invalidateWorld(View view) { 862 view.invalidate(); 863 if (view instanceof ViewGroup) { 864 ViewGroup parent = (ViewGroup) view; 865 for (int i = 0; i < parent.getChildCount(); i++) { 866 invalidateWorld(parent.getChildAt(i)); 867 } 868 } 869 } 870 871 @Override 872 public void invalidateChild(View child, Rect dirty) { 873 invalidateChildInParent(null, dirty); 874 } 875 876 @Override 877 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 878 checkThread(); 879 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 880 881 if (dirty == null) { 882 invalidate(); 883 return null; 884 } else if (dirty.isEmpty() && !mIsAnimating) { 885 return null; 886 } 887 888 if (mCurScrollY != 0 || mTranslator != null) { 889 mTempRect.set(dirty); 890 dirty = mTempRect; 891 if (mCurScrollY != 0) { 892 dirty.offset(0, -mCurScrollY); 893 } 894 if (mTranslator != null) { 895 mTranslator.translateRectInAppWindowToScreen(dirty); 896 } 897 if (mAttachInfo.mScalingRequired) { 898 dirty.inset(-1, -1); 899 } 900 } 901 902 final Rect localDirty = mDirty; 903 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 904 mAttachInfo.mSetIgnoreDirtyState = true; 905 mAttachInfo.mIgnoreDirtyState = true; 906 } 907 908 // Add the new dirty rect to the current one 909 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 910 // Intersect with the bounds of the window to skip 911 // updates that lie outside of the visible region 912 final float appScale = mAttachInfo.mApplicationScale; 913 final boolean intersected = localDirty.intersect(0, 0, 914 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 915 if (!intersected) { 916 localDirty.setEmpty(); 917 } 918 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 919 scheduleTraversals(); 920 } 921 922 return null; 923 } 924 925 void setStopped(boolean stopped) { 926 if (mStopped != stopped) { 927 mStopped = stopped; 928 if (!stopped) { 929 scheduleTraversals(); 930 } 931 } 932 } 933 934 @Override 935 public ViewParent getParent() { 936 return null; 937 } 938 939 @Override 940 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 941 if (child != mView) { 942 throw new RuntimeException("child is not mine, honest!"); 943 } 944 // Note: don't apply scroll offset, because we want to know its 945 // visibility in the virtual canvas being given to the view hierarchy. 946 return r.intersect(0, 0, mWidth, mHeight); 947 } 948 949 @Override 950 public void bringChildToFront(View child) { 951 } 952 953 int getHostVisibility() { 954 return mAppVisible ? mView.getVisibility() : View.GONE; 955 } 956 957 void disposeResizeBuffer() { 958 if (mResizeBuffer != null) { 959 mResizeBuffer.destroy(); 960 mResizeBuffer = null; 961 } 962 } 963 964 /** 965 * Add LayoutTransition to the list of transitions to be started in the next traversal. 966 * This list will be cleared after the transitions on the list are start()'ed. These 967 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 968 * happens during the layout phase of traversal, which we want to complete before any of the 969 * animations are started (because those animations may side-effect properties that layout 970 * depends upon, like the bounding rectangles of the affected views). So we add the transition 971 * to the list and it is started just prior to starting the drawing phase of traversal. 972 * 973 * @param transition The LayoutTransition to be started on the next traversal. 974 * 975 * @hide 976 */ 977 public void requestTransitionStart(LayoutTransition transition) { 978 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 979 if (mPendingTransitions == null) { 980 mPendingTransitions = new ArrayList<LayoutTransition>(); 981 } 982 mPendingTransitions.add(transition); 983 } 984 } 985 986 /** 987 * Notifies the HardwareRenderer that a new frame will be coming soon. 988 * Currently only {@link ThreadedRenderer} cares about this, and uses 989 * this knowledge to adjust the scheduling of off-thread animations 990 */ 991 void notifyRendererOfFramePending() { 992 if (mAttachInfo.mHardwareRenderer != null) { 993 mAttachInfo.mHardwareRenderer.notifyFramePending(); 994 } 995 } 996 997 void scheduleTraversals() { 998 if (!mTraversalScheduled) { 999 mTraversalScheduled = true; 1000 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 1001 mChoreographer.postCallback( 1002 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1003 if (!mUnbufferedInputDispatch) { 1004 scheduleConsumeBatchedInput(); 1005 } 1006 notifyRendererOfFramePending(); 1007 } 1008 } 1009 1010 void unscheduleTraversals() { 1011 if (mTraversalScheduled) { 1012 mTraversalScheduled = false; 1013 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1014 mChoreographer.removeCallbacks( 1015 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1016 } 1017 } 1018 1019 void doTraversal() { 1020 if (mTraversalScheduled) { 1021 mTraversalScheduled = false; 1022 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1023 1024 if (mProfile) { 1025 Debug.startMethodTracing("ViewAncestor"); 1026 } 1027 1028 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 1029 try { 1030 performTraversals(); 1031 } finally { 1032 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1033 } 1034 1035 if (mProfile) { 1036 Debug.stopMethodTracing(); 1037 mProfile = false; 1038 } 1039 } 1040 } 1041 1042 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1043 // Update window's global keep screen on flag: if a view has requested 1044 // that the screen be kept on, then it is always set; otherwise, it is 1045 // set to whatever the client last requested for the global state. 1046 if (mAttachInfo.mKeepScreenOn) { 1047 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1048 } else { 1049 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1050 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1051 } 1052 } 1053 1054 private boolean collectViewAttributes() { 1055 final View.AttachInfo attachInfo = mAttachInfo; 1056 if (attachInfo.mRecomputeGlobalAttributes) { 1057 //Log.i(TAG, "Computing view hierarchy attributes!"); 1058 attachInfo.mRecomputeGlobalAttributes = false; 1059 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1060 attachInfo.mKeepScreenOn = false; 1061 attachInfo.mSystemUiVisibility = 0; 1062 attachInfo.mHasSystemUiListeners = false; 1063 mView.dispatchCollectViewAttributes(attachInfo, 0); 1064 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1065 WindowManager.LayoutParams params = mWindowAttributes; 1066 attachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1067 if (attachInfo.mKeepScreenOn != oldScreenOn 1068 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1069 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1070 applyKeepScreenOnFlag(params); 1071 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1072 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1073 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1074 return true; 1075 } 1076 } 1077 return false; 1078 } 1079 1080 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1081 int vis = 0; 1082 // Translucent decor window flags imply stable system ui visibility. 1083 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1084 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1085 } 1086 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1087 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1088 } 1089 return vis; 1090 } 1091 1092 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1093 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1094 int childWidthMeasureSpec; 1095 int childHeightMeasureSpec; 1096 boolean windowSizeMayChange = false; 1097 1098 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1099 "Measuring " + host + " in display " + desiredWindowWidth 1100 + "x" + desiredWindowHeight + "..."); 1101 1102 boolean goodMeasure = false; 1103 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1104 // On large screens, we don't want to allow dialogs to just 1105 // stretch to fill the entire width of the screen to display 1106 // one line of text. First try doing the layout at a smaller 1107 // size to see if it will fit. 1108 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1109 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1110 int baseSize = 0; 1111 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1112 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1113 } 1114 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1115 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1116 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1117 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1118 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1119 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1120 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1121 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1122 goodMeasure = true; 1123 } else { 1124 // Didn't fit in that size... try expanding a bit. 1125 baseSize = (baseSize+desiredWindowWidth)/2; 1126 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1127 + baseSize); 1128 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1129 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1130 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1131 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1132 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1133 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1134 goodMeasure = true; 1135 } 1136 } 1137 } 1138 } 1139 1140 if (!goodMeasure) { 1141 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1142 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1143 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1144 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1145 windowSizeMayChange = true; 1146 } 1147 } 1148 1149 if (DBG) { 1150 System.out.println("======================================"); 1151 System.out.println("performTraversals -- after measure"); 1152 host.debug(); 1153 } 1154 1155 return windowSizeMayChange; 1156 } 1157 1158 /** 1159 * Modifies the input matrix such that it maps view-local coordinates to 1160 * on-screen coordinates. 1161 * 1162 * @param m input matrix to modify 1163 */ 1164 void transformMatrixToGlobal(Matrix m) { 1165 final View.AttachInfo attachInfo = mAttachInfo; 1166 m.postTranslate(attachInfo.mWindowLeft, attachInfo.mWindowTop); 1167 } 1168 1169 /** 1170 * Modifies the input matrix such that it maps on-screen coordinates to 1171 * view-local coordinates. 1172 * 1173 * @param m input matrix to modify 1174 */ 1175 void transformMatrixToLocal(Matrix m) { 1176 final View.AttachInfo attachInfo = mAttachInfo; 1177 m.preTranslate(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 1178 } 1179 1180 void dispatchApplyInsets(View host) { 1181 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1182 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1183 boolean isRound = false; 1184 if ((mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0 1185 && mDisplay.getDisplayId() == 0) { 1186 // we're fullscreen and not hosted in an ActivityView 1187 isRound = (mIsEmulator && SystemProperties.getBoolean(PROPERTY_EMULATOR_CIRCULAR, false)) 1188 || mContext.getResources().getBoolean( 1189 com.android.internal.R.bool.config_windowIsRound); 1190 } 1191 host.dispatchApplyWindowInsets(new WindowInsets( 1192 mDispatchContentInsets, null /* windowDecorInsets */, 1193 mDispatchStableInsets, isRound)); 1194 } 1195 1196 private void performTraversals() { 1197 // cache mView since it is used so much below... 1198 final View host = mView; 1199 1200 if (DBG) { 1201 System.out.println("======================================"); 1202 System.out.println("performTraversals"); 1203 host.debug(); 1204 } 1205 1206 if (host == null || !mAdded) 1207 return; 1208 1209 mIsInTraversal = true; 1210 mWillDrawSoon = true; 1211 boolean windowSizeMayChange = false; 1212 boolean newSurface = false; 1213 boolean surfaceChanged = false; 1214 WindowManager.LayoutParams lp = mWindowAttributes; 1215 1216 int desiredWindowWidth; 1217 int desiredWindowHeight; 1218 1219 final View.AttachInfo attachInfo = mAttachInfo; 1220 1221 final int viewVisibility = getHostVisibility(); 1222 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1223 || mNewSurfaceNeeded; 1224 1225 WindowManager.LayoutParams params = null; 1226 if (mWindowAttributesChanged) { 1227 mWindowAttributesChanged = false; 1228 surfaceChanged = true; 1229 params = lp; 1230 } 1231 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1232 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1233 params = lp; 1234 mFullRedrawNeeded = true; 1235 mLayoutRequested = true; 1236 if (mLastInCompatMode) { 1237 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1238 mLastInCompatMode = false; 1239 } else { 1240 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1241 mLastInCompatMode = true; 1242 } 1243 } 1244 1245 mWindowAttributesChangesFlag = 0; 1246 1247 Rect frame = mWinFrame; 1248 if (mFirst) { 1249 mFullRedrawNeeded = true; 1250 mLayoutRequested = true; 1251 1252 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1253 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1254 // NOTE -- system code, won't try to do compat mode. 1255 Point size = new Point(); 1256 mDisplay.getRealSize(size); 1257 desiredWindowWidth = size.x; 1258 desiredWindowHeight = size.y; 1259 } else { 1260 DisplayMetrics packageMetrics = 1261 mView.getContext().getResources().getDisplayMetrics(); 1262 desiredWindowWidth = packageMetrics.widthPixels; 1263 desiredWindowHeight = packageMetrics.heightPixels; 1264 } 1265 1266 // We used to use the following condition to choose 32 bits drawing caches: 1267 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1268 // However, windows are now always 32 bits by default, so choose 32 bits 1269 attachInfo.mUse32BitDrawingCache = true; 1270 attachInfo.mHasWindowFocus = false; 1271 attachInfo.mWindowVisibility = viewVisibility; 1272 attachInfo.mRecomputeGlobalAttributes = false; 1273 viewVisibilityChanged = false; 1274 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1275 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1276 // Set the layout direction if it has not been set before (inherit is the default) 1277 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1278 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1279 } 1280 host.dispatchAttachedToWindow(attachInfo, 0); 1281 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1282 dispatchApplyInsets(host); 1283 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1284 1285 } else { 1286 desiredWindowWidth = frame.width(); 1287 desiredWindowHeight = frame.height(); 1288 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1289 if (DEBUG_ORIENTATION) Log.v(TAG, 1290 "View " + host + " resized to: " + frame); 1291 mFullRedrawNeeded = true; 1292 mLayoutRequested = true; 1293 windowSizeMayChange = true; 1294 } 1295 } 1296 1297 if (viewVisibilityChanged) { 1298 attachInfo.mWindowVisibility = viewVisibility; 1299 host.dispatchWindowVisibilityChanged(viewVisibility); 1300 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1301 destroyHardwareResources(); 1302 } 1303 if (viewVisibility == View.GONE) { 1304 // After making a window gone, we will count it as being 1305 // shown for the first time the next time it gets focus. 1306 mHasHadWindowFocus = false; 1307 } 1308 } 1309 1310 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1311 getRunQueue().executeActions(attachInfo.mHandler); 1312 1313 boolean insetsChanged = false; 1314 1315 boolean layoutRequested = mLayoutRequested && !mStopped; 1316 if (layoutRequested) { 1317 1318 final Resources res = mView.getContext().getResources(); 1319 1320 if (mFirst) { 1321 // make sure touch mode code executes by setting cached value 1322 // to opposite of the added touch mode. 1323 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1324 ensureTouchModeLocally(mAddedTouchMode); 1325 } else { 1326 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1327 insetsChanged = true; 1328 } 1329 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1330 insetsChanged = true; 1331 } 1332 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1333 insetsChanged = true; 1334 } 1335 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1336 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1337 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1338 + mAttachInfo.mVisibleInsets); 1339 } 1340 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1341 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1342 windowSizeMayChange = true; 1343 1344 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1345 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1346 // NOTE -- system code, won't try to do compat mode. 1347 Point size = new Point(); 1348 mDisplay.getRealSize(size); 1349 desiredWindowWidth = size.x; 1350 desiredWindowHeight = size.y; 1351 } else { 1352 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1353 desiredWindowWidth = packageMetrics.widthPixels; 1354 desiredWindowHeight = packageMetrics.heightPixels; 1355 } 1356 } 1357 } 1358 1359 // Ask host how big it wants to be 1360 windowSizeMayChange |= measureHierarchy(host, lp, res, 1361 desiredWindowWidth, desiredWindowHeight); 1362 } 1363 1364 if (collectViewAttributes()) { 1365 params = lp; 1366 } 1367 if (attachInfo.mForceReportNewAttributes) { 1368 attachInfo.mForceReportNewAttributes = false; 1369 params = lp; 1370 } 1371 1372 if (mFirst || attachInfo.mViewVisibilityChanged) { 1373 attachInfo.mViewVisibilityChanged = false; 1374 int resizeMode = mSoftInputMode & 1375 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1376 // If we are in auto resize mode, then we need to determine 1377 // what mode to use now. 1378 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1379 final int N = attachInfo.mScrollContainers.size(); 1380 for (int i=0; i<N; i++) { 1381 if (attachInfo.mScrollContainers.get(i).isShown()) { 1382 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1383 } 1384 } 1385 if (resizeMode == 0) { 1386 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1387 } 1388 if ((lp.softInputMode & 1389 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1390 lp.softInputMode = (lp.softInputMode & 1391 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1392 resizeMode; 1393 params = lp; 1394 } 1395 } 1396 } 1397 1398 if (params != null) { 1399 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1400 if (!PixelFormat.formatHasAlpha(params.format)) { 1401 params.format = PixelFormat.TRANSLUCENT; 1402 } 1403 } 1404 mAttachInfo.mOverscanRequested = (params.flags 1405 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1406 } 1407 1408 if (mApplyInsetsRequested) { 1409 mApplyInsetsRequested = false; 1410 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1411 dispatchApplyInsets(host); 1412 if (mLayoutRequested) { 1413 // Short-circuit catching a new layout request here, so 1414 // we don't need to go through two layout passes when things 1415 // change due to fitting system windows, which can happen a lot. 1416 windowSizeMayChange |= measureHierarchy(host, lp, 1417 mView.getContext().getResources(), 1418 desiredWindowWidth, desiredWindowHeight); 1419 } 1420 } 1421 1422 if (layoutRequested) { 1423 // Clear this now, so that if anything requests a layout in the 1424 // rest of this function we will catch it and re-run a full 1425 // layout pass. 1426 mLayoutRequested = false; 1427 } 1428 1429 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1430 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1431 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1432 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1433 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1434 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1435 1436 // Determine whether to compute insets. 1437 // If there are no inset listeners remaining then we may still need to compute 1438 // insets in case the old insets were non-empty and must be reset. 1439 final boolean computesInternalInsets = 1440 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1441 || attachInfo.mHasNonEmptyGivenInternalInsets; 1442 1443 boolean insetsPending = false; 1444 int relayoutResult = 0; 1445 1446 if (mFirst || windowShouldResize || insetsChanged || 1447 viewVisibilityChanged || params != null) { 1448 1449 if (viewVisibility == View.VISIBLE) { 1450 // If this window is giving internal insets to the window 1451 // manager, and it is being added or changing its visibility, 1452 // then we want to first give the window manager "fake" 1453 // insets to cause it to effectively ignore the content of 1454 // the window during layout. This avoids it briefly causing 1455 // other windows to resize/move based on the raw frame of the 1456 // window, waiting until we can finish laying out this window 1457 // and get back to the window manager with the ultimately 1458 // computed insets. 1459 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1460 } 1461 1462 if (mSurfaceHolder != null) { 1463 mSurfaceHolder.mSurfaceLock.lock(); 1464 mDrawingAllowed = true; 1465 } 1466 1467 boolean hwInitialized = false; 1468 boolean contentInsetsChanged = false; 1469 boolean hadSurface = mSurface.isValid(); 1470 1471 try { 1472 if (DEBUG_LAYOUT) { 1473 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1474 host.getMeasuredHeight() + ", params=" + params); 1475 } 1476 1477 if (mAttachInfo.mHardwareRenderer != null) { 1478 // relayoutWindow may decide to destroy mSurface. As that decision 1479 // happens in WindowManager service, we need to be defensive here 1480 // and stop using the surface in case it gets destroyed. 1481 mAttachInfo.mHardwareRenderer.pauseSurface(mSurface); 1482 } 1483 final int surfaceGenerationId = mSurface.getGenerationId(); 1484 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1485 if (!mDrawDuringWindowsAnimating && 1486 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1487 mWindowsAnimating = true; 1488 } 1489 1490 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1491 + " overscan=" + mPendingOverscanInsets.toShortString() 1492 + " content=" + mPendingContentInsets.toShortString() 1493 + " visible=" + mPendingVisibleInsets.toShortString() 1494 + " visible=" + mPendingStableInsets.toShortString() 1495 + " surface=" + mSurface); 1496 1497 if (mPendingConfiguration.seq != 0) { 1498 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1499 + mPendingConfiguration); 1500 updateConfiguration(mPendingConfiguration, !mFirst); 1501 mPendingConfiguration.seq = 0; 1502 } 1503 1504 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1505 mAttachInfo.mOverscanInsets); 1506 contentInsetsChanged = !mPendingContentInsets.equals( 1507 mAttachInfo.mContentInsets); 1508 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1509 mAttachInfo.mVisibleInsets); 1510 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1511 mAttachInfo.mStableInsets); 1512 if (contentInsetsChanged) { 1513 if (mWidth > 0 && mHeight > 0 && lp != null && 1514 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1515 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1516 mSurface != null && mSurface.isValid() && 1517 !mAttachInfo.mTurnOffWindowResizeAnim && 1518 mAttachInfo.mHardwareRenderer != null && 1519 mAttachInfo.mHardwareRenderer.isEnabled() && 1520 lp != null && !PixelFormat.formatHasAlpha(lp.format) 1521 && !mBlockResizeBuffer) { 1522 1523 disposeResizeBuffer(); 1524 1525// TODO: Again.... 1526// if (mResizeBuffer == null) { 1527// mResizeBuffer = mAttachInfo.mHardwareRenderer.createDisplayListLayer( 1528// mWidth, mHeight); 1529// } 1530// mResizeBuffer.prepare(mWidth, mHeight, false); 1531// RenderNode layerRenderNode = mResizeBuffer.startRecording(); 1532// HardwareCanvas layerCanvas = layerRenderNode.start(mWidth, mHeight); 1533// try { 1534// final int restoreCount = layerCanvas.save(); 1535// 1536// int yoff; 1537// final boolean scrolling = mScroller != null 1538// && mScroller.computeScrollOffset(); 1539// if (scrolling) { 1540// yoff = mScroller.getCurrY(); 1541// mScroller.abortAnimation(); 1542// } else { 1543// yoff = mScrollY; 1544// } 1545// 1546// layerCanvas.translate(0, -yoff); 1547// if (mTranslator != null) { 1548// mTranslator.translateCanvas(layerCanvas); 1549// } 1550// 1551// RenderNode renderNode = mView.mRenderNode; 1552// if (renderNode != null && renderNode.isValid()) { 1553// layerCanvas.drawDisplayList(renderNode, null, 1554// RenderNode.FLAG_CLIP_CHILDREN); 1555// } else { 1556// mView.draw(layerCanvas); 1557// } 1558// 1559// drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1560// 1561// mResizeBufferStartTime = SystemClock.uptimeMillis(); 1562// mResizeBufferDuration = mView.getResources().getInteger( 1563// com.android.internal.R.integer.config_mediumAnimTime); 1564// 1565// layerCanvas.restoreToCount(restoreCount); 1566// layerRenderNode.end(layerCanvas); 1567// layerRenderNode.setCaching(true); 1568// layerRenderNode.setLeftTopRightBottom(0, 0, mWidth, mHeight); 1569// mTempRect.set(0, 0, mWidth, mHeight); 1570// } finally { 1571// mResizeBuffer.endRecording(mTempRect); 1572// } 1573// mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 1574 } 1575 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1576 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1577 + mAttachInfo.mContentInsets); 1578 } 1579 if (overscanInsetsChanged) { 1580 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1581 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1582 + mAttachInfo.mOverscanInsets); 1583 // Need to relayout with content insets. 1584 contentInsetsChanged = true; 1585 } 1586 if (stableInsetsChanged) { 1587 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1588 if (DEBUG_LAYOUT) Log.v(TAG, "Decor insets changing to: " 1589 + mAttachInfo.mStableInsets); 1590 // Need to relayout with content insets. 1591 contentInsetsChanged = true; 1592 } 1593 if (contentInsetsChanged || mLastSystemUiVisibility != 1594 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1595 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1596 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1597 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1598 mApplyInsetsRequested = false; 1599 dispatchApplyInsets(host); 1600 } 1601 if (visibleInsetsChanged) { 1602 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1603 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1604 + mAttachInfo.mVisibleInsets); 1605 } 1606 1607 if (!hadSurface) { 1608 if (mSurface.isValid()) { 1609 // If we are creating a new surface, then we need to 1610 // completely redraw it. Also, when we get to the 1611 // point of drawing it we will hold off and schedule 1612 // a new traversal instead. This is so we can tell the 1613 // window manager about all of the windows being displayed 1614 // before actually drawing them, so it can display then 1615 // all at once. 1616 newSurface = true; 1617 mFullRedrawNeeded = true; 1618 mPreviousTransparentRegion.setEmpty(); 1619 1620 if (mAttachInfo.mHardwareRenderer != null) { 1621 try { 1622 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1623 mSurface); 1624 } catch (OutOfResourcesException e) { 1625 handleOutOfResourcesException(e); 1626 return; 1627 } 1628 } 1629 } 1630 } else if (!mSurface.isValid()) { 1631 // If the surface has been removed, then reset the scroll 1632 // positions. 1633 if (mLastScrolledFocus != null) { 1634 mLastScrolledFocus.clear(); 1635 } 1636 mScrollY = mCurScrollY = 0; 1637 if (mScroller != null) { 1638 mScroller.abortAnimation(); 1639 } 1640 disposeResizeBuffer(); 1641 // Our surface is gone 1642 if (mAttachInfo.mHardwareRenderer != null && 1643 mAttachInfo.mHardwareRenderer.isEnabled()) { 1644 mAttachInfo.mHardwareRenderer.destroy(); 1645 } 1646 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1647 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1648 mFullRedrawNeeded = true; 1649 try { 1650 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1651 } catch (OutOfResourcesException e) { 1652 handleOutOfResourcesException(e); 1653 return; 1654 } 1655 } 1656 } catch (RemoteException e) { 1657 } 1658 1659 if (DEBUG_ORIENTATION) Log.v( 1660 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1661 1662 attachInfo.mWindowLeft = frame.left; 1663 attachInfo.mWindowTop = frame.top; 1664 1665 // !!FIXME!! This next section handles the case where we did not get the 1666 // window size we asked for. We should avoid this by getting a maximum size from 1667 // the window session beforehand. 1668 if (mWidth != frame.width() || mHeight != frame.height()) { 1669 mWidth = frame.width(); 1670 mHeight = frame.height(); 1671 } 1672 1673 if (mSurfaceHolder != null) { 1674 // The app owns the surface; tell it about what is going on. 1675 if (mSurface.isValid()) { 1676 // XXX .copyFrom() doesn't work! 1677 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1678 mSurfaceHolder.mSurface = mSurface; 1679 } 1680 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1681 mSurfaceHolder.mSurfaceLock.unlock(); 1682 if (mSurface.isValid()) { 1683 if (!hadSurface) { 1684 mSurfaceHolder.ungetCallbacks(); 1685 1686 mIsCreating = true; 1687 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1688 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1689 if (callbacks != null) { 1690 for (SurfaceHolder.Callback c : callbacks) { 1691 c.surfaceCreated(mSurfaceHolder); 1692 } 1693 } 1694 surfaceChanged = true; 1695 } 1696 if (surfaceChanged) { 1697 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1698 lp.format, mWidth, mHeight); 1699 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1700 if (callbacks != null) { 1701 for (SurfaceHolder.Callback c : callbacks) { 1702 c.surfaceChanged(mSurfaceHolder, lp.format, 1703 mWidth, mHeight); 1704 } 1705 } 1706 } 1707 mIsCreating = false; 1708 } else if (hadSurface) { 1709 mSurfaceHolder.ungetCallbacks(); 1710 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1711 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1712 if (callbacks != null) { 1713 for (SurfaceHolder.Callback c : callbacks) { 1714 c.surfaceDestroyed(mSurfaceHolder); 1715 } 1716 } 1717 mSurfaceHolder.mSurfaceLock.lock(); 1718 try { 1719 mSurfaceHolder.mSurface = new Surface(); 1720 } finally { 1721 mSurfaceHolder.mSurfaceLock.unlock(); 1722 } 1723 } 1724 } 1725 1726 if (mAttachInfo.mHardwareRenderer != null && 1727 mAttachInfo.mHardwareRenderer.isEnabled()) { 1728 if (hwInitialized || 1729 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1730 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1731 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 1732 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight, surfaceInsets); 1733 if (!hwInitialized) { 1734 mAttachInfo.mHardwareRenderer.invalidate(mSurface); 1735 mFullRedrawNeeded = true; 1736 } 1737 } 1738 } 1739 1740 if (!mStopped) { 1741 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1742 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1743 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1744 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1745 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1746 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1747 1748 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1749 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1750 + " mHeight=" + mHeight 1751 + " measuredHeight=" + host.getMeasuredHeight() 1752 + " coveredInsetsChanged=" + contentInsetsChanged); 1753 1754 // Ask host how big it wants to be 1755 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1756 1757 // Implementation of weights from WindowManager.LayoutParams 1758 // We just grow the dimensions as needed and re-measure if 1759 // needs be 1760 int width = host.getMeasuredWidth(); 1761 int height = host.getMeasuredHeight(); 1762 boolean measureAgain = false; 1763 1764 if (lp.horizontalWeight > 0.0f) { 1765 width += (int) ((mWidth - width) * lp.horizontalWeight); 1766 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1767 MeasureSpec.EXACTLY); 1768 measureAgain = true; 1769 } 1770 if (lp.verticalWeight > 0.0f) { 1771 height += (int) ((mHeight - height) * lp.verticalWeight); 1772 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1773 MeasureSpec.EXACTLY); 1774 measureAgain = true; 1775 } 1776 1777 if (measureAgain) { 1778 if (DEBUG_LAYOUT) Log.v(TAG, 1779 "And hey let's measure once more: width=" + width 1780 + " height=" + height); 1781 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1782 } 1783 1784 layoutRequested = true; 1785 } 1786 } 1787 } else { 1788 // Not the first pass and no window/insets/visibility change but the window 1789 // may have moved and we need check that and if so to update the left and right 1790 // in the attach info. We translate only the window frame since on window move 1791 // the window manager tells us only for the new frame but the insets are the 1792 // same and we do not want to translate them more than once. 1793 1794 // TODO: Well, we are checking whether the frame has changed similarly 1795 // to how this is done for the insets. This is however incorrect since 1796 // the insets and the frame are translated. For example, the old frame 1797 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1798 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1799 // true since we are comparing a not translated value to a translated one. 1800 // This scenario is rare but we may want to fix that. 1801 1802 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1803 || attachInfo.mWindowTop != frame.top); 1804 if (windowMoved) { 1805 if (mTranslator != null) { 1806 mTranslator.translateRectInScreenToAppWinFrame(frame); 1807 } 1808 attachInfo.mWindowLeft = frame.left; 1809 attachInfo.mWindowTop = frame.top; 1810 } 1811 } 1812 1813 final boolean didLayout = layoutRequested && !mStopped; 1814 boolean triggerGlobalLayoutListener = didLayout 1815 || attachInfo.mRecomputeGlobalAttributes; 1816 if (didLayout) { 1817 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1818 1819 // By this point all views have been sized and positioned 1820 // We can compute the transparent area 1821 1822 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1823 // start out transparent 1824 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1825 host.getLocationInWindow(mTmpLocation); 1826 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1827 mTmpLocation[0] + host.mRight - host.mLeft, 1828 mTmpLocation[1] + host.mBottom - host.mTop); 1829 1830 host.gatherTransparentRegion(mTransparentRegion); 1831 if (mTranslator != null) { 1832 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1833 } 1834 1835 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1836 mPreviousTransparentRegion.set(mTransparentRegion); 1837 mFullRedrawNeeded = true; 1838 // reconfigure window manager 1839 try { 1840 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1841 } catch (RemoteException e) { 1842 } 1843 } 1844 } 1845 1846 if (DBG) { 1847 System.out.println("======================================"); 1848 System.out.println("performTraversals -- after setFrame"); 1849 host.debug(); 1850 } 1851 } 1852 1853 if (triggerGlobalLayoutListener) { 1854 attachInfo.mRecomputeGlobalAttributes = false; 1855 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1856 } 1857 1858 if (computesInternalInsets) { 1859 // Clear the original insets. 1860 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1861 insets.reset(); 1862 1863 // Compute new insets in place. 1864 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1865 attachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1866 1867 // Tell the window manager. 1868 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1869 mLastGivenInsets.set(insets); 1870 1871 // Translate insets to screen coordinates if needed. 1872 final Rect contentInsets; 1873 final Rect visibleInsets; 1874 final Region touchableRegion; 1875 if (mTranslator != null) { 1876 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1877 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1878 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1879 } else { 1880 contentInsets = insets.contentInsets; 1881 visibleInsets = insets.visibleInsets; 1882 touchableRegion = insets.touchableRegion; 1883 } 1884 1885 try { 1886 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1887 contentInsets, visibleInsets, touchableRegion); 1888 } catch (RemoteException e) { 1889 } 1890 } 1891 } 1892 1893 boolean skipDraw = false; 1894 1895 if (mFirst) { 1896 // handle first focus request 1897 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1898 + mView.hasFocus()); 1899 if (mView != null) { 1900 if (!mView.hasFocus()) { 1901 mView.requestFocus(View.FOCUS_FORWARD); 1902 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1903 + mView.findFocus()); 1904 } else { 1905 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1906 + mView.findFocus()); 1907 } 1908 } 1909 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1910 // The first time we relayout the window, if the system is 1911 // doing window animations, we want to hold of on any future 1912 // draws until the animation is done. 1913 mWindowsAnimating = true; 1914 } 1915 } else if (mWindowsAnimating) { 1916 skipDraw = true; 1917 } 1918 1919 mFirst = false; 1920 mWillDrawSoon = false; 1921 mNewSurfaceNeeded = false; 1922 mViewVisibility = viewVisibility; 1923 1924 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1925 final boolean imTarget = WindowManager.LayoutParams 1926 .mayUseInputMethod(mWindowAttributes.flags); 1927 if (imTarget != mLastWasImTarget) { 1928 mLastWasImTarget = imTarget; 1929 InputMethodManager imm = InputMethodManager.peekInstance(); 1930 if (imm != null && imTarget) { 1931 imm.startGettingWindowFocus(mView); 1932 imm.onWindowFocus(mView, mView.findFocus(), 1933 mWindowAttributes.softInputMode, 1934 !mHasHadWindowFocus, mWindowAttributes.flags); 1935 } 1936 } 1937 } 1938 1939 // Remember if we must report the next draw. 1940 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1941 mReportNextDraw = true; 1942 } 1943 1944 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1945 viewVisibility != View.VISIBLE; 1946 1947 if (!cancelDraw && !newSurface) { 1948 if (!skipDraw || mReportNextDraw) { 1949 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1950 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1951 mPendingTransitions.get(i).startChangingAnimations(); 1952 } 1953 mPendingTransitions.clear(); 1954 } 1955 1956 performDraw(); 1957 } 1958 } else { 1959 if (viewVisibility == View.VISIBLE) { 1960 // Try again 1961 scheduleTraversals(); 1962 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1963 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1964 mPendingTransitions.get(i).endChangingAnimations(); 1965 } 1966 mPendingTransitions.clear(); 1967 } 1968 } 1969 1970 mIsInTraversal = false; 1971 } 1972 1973 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1974 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1975 try { 1976 if (!mWindowSession.outOfMemory(mWindow) && 1977 Process.myUid() != Process.SYSTEM_UID) { 1978 Slog.w(TAG, "No processes killed for memory; killing self"); 1979 Process.killProcess(Process.myPid()); 1980 } 1981 } catch (RemoteException ex) { 1982 } 1983 mLayoutRequested = true; // ask wm for a new surface next time. 1984 } 1985 1986 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1987 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1988 try { 1989 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1990 } finally { 1991 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1992 } 1993 } 1994 1995 /** 1996 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1997 * is currently undergoing a layout pass. 1998 * 1999 * @return whether the view hierarchy is currently undergoing a layout pass 2000 */ 2001 boolean isInLayout() { 2002 return mInLayout; 2003 } 2004 2005 /** 2006 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2007 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2008 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2009 * all children in that container hierarchy are measured and laid out at the end of the layout 2010 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2011 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2012 * we check all of those views to see if any still have pending layout requests, which 2013 * indicates that they were not correctly handled by their container hierarchy. If that is 2014 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2015 * to blank containers, and force a second request/measure/layout pass in this frame. If 2016 * more requestLayout() calls are received during that second layout pass, we post those 2017 * requests to the next frame to avoid possible infinite loops. 2018 * 2019 * <p>The return value from this method indicates whether the request should proceed 2020 * (if it is a request during the first layout pass) or should be skipped and posted to the 2021 * next frame (if it is a request during the second layout pass).</p> 2022 * 2023 * @param view the view that requested the layout. 2024 * 2025 * @return true if request should proceed, false otherwise. 2026 */ 2027 boolean requestLayoutDuringLayout(final View view) { 2028 if (view.mParent == null || view.mAttachInfo == null) { 2029 // Would not normally trigger another layout, so just let it pass through as usual 2030 return true; 2031 } 2032 if (!mLayoutRequesters.contains(view)) { 2033 mLayoutRequesters.add(view); 2034 } 2035 if (!mHandlingLayoutInLayoutRequest) { 2036 // Let the request proceed normally; it will be processed in a second layout pass 2037 // if necessary 2038 return true; 2039 } else { 2040 // Don't let the request proceed during the second layout pass. 2041 // It will post to the next frame instead. 2042 return false; 2043 } 2044 } 2045 2046 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2047 int desiredWindowHeight) { 2048 mLayoutRequested = false; 2049 mScrollMayChange = true; 2050 mInLayout = true; 2051 2052 final View host = mView; 2053 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2054 Log.v(TAG, "Laying out " + host + " to (" + 2055 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2056 } 2057 2058 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2059 try { 2060 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2061 2062 mInLayout = false; 2063 int numViewsRequestingLayout = mLayoutRequesters.size(); 2064 if (numViewsRequestingLayout > 0) { 2065 // requestLayout() was called during layout. 2066 // If no layout-request flags are set on the requesting views, there is no problem. 2067 // If some requests are still pending, then we need to clear those flags and do 2068 // a full request/measure/layout pass to handle this situation. 2069 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2070 false); 2071 if (validLayoutRequesters != null) { 2072 // Set this flag to indicate that any further requests are happening during 2073 // the second pass, which may result in posting those requests to the next 2074 // frame instead 2075 mHandlingLayoutInLayoutRequest = true; 2076 2077 // Process fresh layout requests, then measure and layout 2078 int numValidRequests = validLayoutRequesters.size(); 2079 for (int i = 0; i < numValidRequests; ++i) { 2080 final View view = validLayoutRequesters.get(i); 2081 Log.w("View", "requestLayout() improperly called by " + view + 2082 " during layout: running second layout pass"); 2083 view.requestLayout(); 2084 } 2085 measureHierarchy(host, lp, mView.getContext().getResources(), 2086 desiredWindowWidth, desiredWindowHeight); 2087 mInLayout = true; 2088 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2089 2090 mHandlingLayoutInLayoutRequest = false; 2091 2092 // Check the valid requests again, this time without checking/clearing the 2093 // layout flags, since requests happening during the second pass get noop'd 2094 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2095 if (validLayoutRequesters != null) { 2096 final ArrayList<View> finalRequesters = validLayoutRequesters; 2097 // Post second-pass requests to the next frame 2098 getRunQueue().post(new Runnable() { 2099 @Override 2100 public void run() { 2101 int numValidRequests = finalRequesters.size(); 2102 for (int i = 0; i < numValidRequests; ++i) { 2103 final View view = finalRequesters.get(i); 2104 Log.w("View", "requestLayout() improperly called by " + view + 2105 " during second layout pass: posting in next frame"); 2106 view.requestLayout(); 2107 } 2108 } 2109 }); 2110 } 2111 } 2112 2113 } 2114 } finally { 2115 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2116 } 2117 mInLayout = false; 2118 } 2119 2120 /** 2121 * This method is called during layout when there have been calls to requestLayout() during 2122 * layout. It walks through the list of views that requested layout to determine which ones 2123 * still need it, based on visibility in the hierarchy and whether they have already been 2124 * handled (as is usually the case with ListView children). 2125 * 2126 * @param layoutRequesters The list of views that requested layout during layout 2127 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2128 * If so, the FORCE_LAYOUT flag was not set on requesters. 2129 * @return A list of the actual views that still need to be laid out. 2130 */ 2131 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2132 boolean secondLayoutRequests) { 2133 2134 int numViewsRequestingLayout = layoutRequesters.size(); 2135 ArrayList<View> validLayoutRequesters = null; 2136 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2137 View view = layoutRequesters.get(i); 2138 if (view != null && view.mAttachInfo != null && view.mParent != null && 2139 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2140 View.PFLAG_FORCE_LAYOUT)) { 2141 boolean gone = false; 2142 View parent = view; 2143 // Only trigger new requests for views in a non-GONE hierarchy 2144 while (parent != null) { 2145 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2146 gone = true; 2147 break; 2148 } 2149 if (parent.mParent instanceof View) { 2150 parent = (View) parent.mParent; 2151 } else { 2152 parent = null; 2153 } 2154 } 2155 if (!gone) { 2156 if (validLayoutRequesters == null) { 2157 validLayoutRequesters = new ArrayList<View>(); 2158 } 2159 validLayoutRequesters.add(view); 2160 } 2161 } 2162 } 2163 if (!secondLayoutRequests) { 2164 // If we're checking the layout flags, then we need to clean them up also 2165 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2166 View view = layoutRequesters.get(i); 2167 while (view != null && 2168 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2169 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2170 if (view.mParent instanceof View) { 2171 view = (View) view.mParent; 2172 } else { 2173 view = null; 2174 } 2175 } 2176 } 2177 } 2178 layoutRequesters.clear(); 2179 return validLayoutRequesters; 2180 } 2181 2182 @Override 2183 public void requestTransparentRegion(View child) { 2184 // the test below should not fail unless someone is messing with us 2185 checkThread(); 2186 if (mView == child) { 2187 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2188 // Need to make sure we re-evaluate the window attributes next 2189 // time around, to ensure the window has the correct format. 2190 mWindowAttributesChanged = true; 2191 mWindowAttributesChangesFlag = 0; 2192 requestLayout(); 2193 } 2194 } 2195 2196 /** 2197 * Figures out the measure spec for the root view in a window based on it's 2198 * layout params. 2199 * 2200 * @param windowSize 2201 * The available width or height of the window 2202 * 2203 * @param rootDimension 2204 * The layout params for one dimension (width or height) of the 2205 * window. 2206 * 2207 * @return The measure spec to use to measure the root view. 2208 */ 2209 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2210 int measureSpec; 2211 switch (rootDimension) { 2212 2213 case ViewGroup.LayoutParams.MATCH_PARENT: 2214 // Window can't resize. Force root view to be windowSize. 2215 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2216 break; 2217 case ViewGroup.LayoutParams.WRAP_CONTENT: 2218 // Window can resize. Set max size for root view. 2219 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2220 break; 2221 default: 2222 // Window wants to be an exact size. Force root view to be that size. 2223 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2224 break; 2225 } 2226 return measureSpec; 2227 } 2228 2229 int mHardwareXOffset; 2230 int mHardwareYOffset; 2231 int mResizeAlpha; 2232 final Paint mResizePaint = new Paint(); 2233 2234 @Override 2235 public void onHardwarePreDraw(HardwareCanvas canvas) { 2236 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2237 } 2238 2239 @Override 2240 public void onHardwarePostDraw(HardwareCanvas canvas) { 2241 if (mResizeBuffer != null) { 2242 mResizePaint.setAlpha(mResizeAlpha); 2243 canvas.drawHardwareLayer(mResizeBuffer, mHardwareXOffset, mHardwareYOffset, 2244 mResizePaint); 2245 } 2246 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2247 } 2248 2249 /** 2250 * @hide 2251 */ 2252 void outputDisplayList(View view) { 2253 RenderNode renderNode = view.getDisplayList(); 2254 if (renderNode != null) { 2255 renderNode.output(); 2256 } 2257 } 2258 2259 /** 2260 * @see #PROPERTY_PROFILE_RENDERING 2261 */ 2262 private void profileRendering(boolean enabled) { 2263 if (mProfileRendering) { 2264 mRenderProfilingEnabled = enabled; 2265 2266 if (mRenderProfiler != null) { 2267 mChoreographer.removeFrameCallback(mRenderProfiler); 2268 } 2269 if (mRenderProfilingEnabled) { 2270 if (mRenderProfiler == null) { 2271 mRenderProfiler = new Choreographer.FrameCallback() { 2272 @Override 2273 public void doFrame(long frameTimeNanos) { 2274 mDirty.set(0, 0, mWidth, mHeight); 2275 scheduleTraversals(); 2276 if (mRenderProfilingEnabled) { 2277 mChoreographer.postFrameCallback(mRenderProfiler); 2278 } 2279 } 2280 }; 2281 } 2282 mChoreographer.postFrameCallback(mRenderProfiler); 2283 } else { 2284 mRenderProfiler = null; 2285 } 2286 } 2287 } 2288 2289 /** 2290 * Called from draw() when DEBUG_FPS is enabled 2291 */ 2292 private void trackFPS() { 2293 // Tracks frames per second drawn. First value in a series of draws may be bogus 2294 // because it down not account for the intervening idle time 2295 long nowTime = System.currentTimeMillis(); 2296 if (mFpsStartTime < 0) { 2297 mFpsStartTime = mFpsPrevTime = nowTime; 2298 mFpsNumFrames = 0; 2299 } else { 2300 ++mFpsNumFrames; 2301 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2302 long frameTime = nowTime - mFpsPrevTime; 2303 long totalTime = nowTime - mFpsStartTime; 2304 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2305 mFpsPrevTime = nowTime; 2306 if (totalTime > 1000) { 2307 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2308 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2309 mFpsStartTime = nowTime; 2310 mFpsNumFrames = 0; 2311 } 2312 } 2313 } 2314 2315 private void performDraw() { 2316 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2317 return; 2318 } 2319 2320 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2321 mFullRedrawNeeded = false; 2322 2323 mIsDrawing = true; 2324 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2325 try { 2326 draw(fullRedrawNeeded); 2327 } finally { 2328 mIsDrawing = false; 2329 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2330 } 2331 2332 if (mReportNextDraw) { 2333 mReportNextDraw = false; 2334 if (mAttachInfo.mHardwareRenderer != null) { 2335 mAttachInfo.mHardwareRenderer.fence(); 2336 } 2337 2338 if (LOCAL_LOGV) { 2339 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2340 } 2341 if (mSurfaceHolder != null && mSurface.isValid()) { 2342 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2343 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2344 if (callbacks != null) { 2345 for (SurfaceHolder.Callback c : callbacks) { 2346 if (c instanceof SurfaceHolder.Callback2) { 2347 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2348 mSurfaceHolder); 2349 } 2350 } 2351 } 2352 } 2353 try { 2354 mWindowSession.finishDrawing(mWindow); 2355 } catch (RemoteException e) { 2356 } 2357 } 2358 } 2359 2360 private void draw(boolean fullRedrawNeeded) { 2361 Surface surface = mSurface; 2362 if (!surface.isValid()) { 2363 return; 2364 } 2365 2366 if (DEBUG_FPS) { 2367 trackFPS(); 2368 } 2369 2370 if (!sFirstDrawComplete) { 2371 synchronized (sFirstDrawHandlers) { 2372 sFirstDrawComplete = true; 2373 final int count = sFirstDrawHandlers.size(); 2374 for (int i = 0; i< count; i++) { 2375 mHandler.post(sFirstDrawHandlers.get(i)); 2376 } 2377 } 2378 } 2379 2380 scrollToRectOrFocus(null, false); 2381 2382 final AttachInfo attachInfo = mAttachInfo; 2383 if (attachInfo.mViewScrollChanged) { 2384 attachInfo.mViewScrollChanged = false; 2385 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2386 } 2387 2388 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2389 final int curScrollY; 2390 if (animating) { 2391 curScrollY = mScroller.getCurrY(); 2392 } else { 2393 curScrollY = mScrollY; 2394 } 2395 if (mCurScrollY != curScrollY) { 2396 mCurScrollY = curScrollY; 2397 fullRedrawNeeded = true; 2398 } 2399 2400 final float appScale = attachInfo.mApplicationScale; 2401 final boolean scalingRequired = attachInfo.mScalingRequired; 2402 2403 int resizeAlpha = 0; 2404 if (mResizeBuffer != null) { 2405 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2406 if (deltaTime < mResizeBufferDuration) { 2407 float amt = deltaTime/(float) mResizeBufferDuration; 2408 amt = mResizeInterpolator.getInterpolation(amt); 2409 animating = true; 2410 resizeAlpha = 255 - (int)(amt*255); 2411 } else { 2412 disposeResizeBuffer(); 2413 } 2414 } 2415 2416 final Rect dirty = mDirty; 2417 if (mSurfaceHolder != null) { 2418 // The app owns the surface, we won't draw. 2419 dirty.setEmpty(); 2420 if (animating) { 2421 if (mScroller != null) { 2422 mScroller.abortAnimation(); 2423 } 2424 disposeResizeBuffer(); 2425 } 2426 return; 2427 } 2428 2429 if (fullRedrawNeeded) { 2430 attachInfo.mIgnoreDirtyState = true; 2431 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2432 } 2433 2434 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2435 Log.v(TAG, "Draw " + mView + "/" 2436 + mWindowAttributes.getTitle() 2437 + ": dirty={" + dirty.left + "," + dirty.top 2438 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2439 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2440 appScale + ", width=" + mWidth + ", height=" + mHeight); 2441 } 2442 2443 attachInfo.mTreeObserver.dispatchOnDraw(); 2444 2445 int xOffset = 0; 2446 int yOffset = curScrollY; 2447 final WindowManager.LayoutParams params = mWindowAttributes; 2448 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2449 if (surfaceInsets != null) { 2450 xOffset -= surfaceInsets.left; 2451 yOffset -= surfaceInsets.top; 2452 2453 // Offset dirty rect for surface insets. 2454 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2455 } 2456 2457 if (!dirty.isEmpty() || mIsAnimating) { 2458 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2459 // Draw with hardware renderer. 2460 mIsAnimating = false; 2461 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2462 mHardwareYOffset = yOffset; 2463 mHardwareXOffset = xOffset; 2464 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2465 } 2466 mResizeAlpha = resizeAlpha; 2467 2468 dirty.setEmpty(); 2469 2470 mBlockResizeBuffer = false; 2471 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this); 2472 } else { 2473 // If we get here with a disabled & requested hardware renderer, something went 2474 // wrong (an invalidate posted right before we destroyed the hardware surface 2475 // for instance) so we should just bail out. Locking the surface with software 2476 // rendering at this point would lock it forever and prevent hardware renderer 2477 // from doing its job when it comes back. 2478 // Before we request a new frame we must however attempt to reinitiliaze the 2479 // hardware renderer if it's in requested state. This would happen after an 2480 // eglTerminate() for instance. 2481 if (attachInfo.mHardwareRenderer != null && 2482 !attachInfo.mHardwareRenderer.isEnabled() && 2483 attachInfo.mHardwareRenderer.isRequested()) { 2484 2485 try { 2486 attachInfo.mHardwareRenderer.initializeIfNeeded( 2487 mWidth, mHeight, mSurface, surfaceInsets); 2488 } catch (OutOfResourcesException e) { 2489 handleOutOfResourcesException(e); 2490 return; 2491 } 2492 2493 mFullRedrawNeeded = true; 2494 scheduleTraversals(); 2495 return; 2496 } 2497 2498 if (!drawSoftware(surface, attachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2499 return; 2500 } 2501 } 2502 } 2503 2504 if (animating) { 2505 mFullRedrawNeeded = true; 2506 scheduleTraversals(); 2507 } 2508 } 2509 2510 /** 2511 * @return true if drawing was successful, false if an error occurred 2512 */ 2513 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2514 boolean scalingRequired, Rect dirty) { 2515 2516 // Draw with software renderer. 2517 final Canvas canvas; 2518 try { 2519 final int left = dirty.left; 2520 final int top = dirty.top; 2521 final int right = dirty.right; 2522 final int bottom = dirty.bottom; 2523 2524 canvas = mSurface.lockCanvas(dirty); 2525 2526 // The dirty rectangle can be modified by Surface.lockCanvas() 2527 //noinspection ConstantConditions 2528 if (left != dirty.left || top != dirty.top || right != dirty.right 2529 || bottom != dirty.bottom) { 2530 attachInfo.mIgnoreDirtyState = true; 2531 } 2532 2533 // TODO: Do this in native 2534 canvas.setDensity(mDensity); 2535 } catch (Surface.OutOfResourcesException e) { 2536 handleOutOfResourcesException(e); 2537 return false; 2538 } catch (IllegalArgumentException e) { 2539 Log.e(TAG, "Could not lock surface", e); 2540 // Don't assume this is due to out of memory, it could be 2541 // something else, and if it is something else then we could 2542 // kill stuff (or ourself) for no reason. 2543 mLayoutRequested = true; // ask wm for a new surface next time. 2544 return false; 2545 } 2546 2547 try { 2548 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2549 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2550 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2551 //canvas.drawARGB(255, 255, 0, 0); 2552 } 2553 2554 // If this bitmap's format includes an alpha channel, we 2555 // need to clear it before drawing so that the child will 2556 // properly re-composite its drawing on a transparent 2557 // background. This automatically respects the clip/dirty region 2558 // or 2559 // If we are applying an offset, we need to clear the area 2560 // where the offset doesn't appear to avoid having garbage 2561 // left in the blank areas. 2562 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2563 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2564 } 2565 2566 dirty.setEmpty(); 2567 mIsAnimating = false; 2568 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2569 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2570 2571 if (DEBUG_DRAW) { 2572 Context cxt = mView.getContext(); 2573 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2574 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2575 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2576 } 2577 try { 2578 canvas.translate(-xoff, -yoff); 2579 if (mTranslator != null) { 2580 mTranslator.translateCanvas(canvas); 2581 } 2582 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2583 attachInfo.mSetIgnoreDirtyState = false; 2584 2585 mView.draw(canvas); 2586 2587 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2588 } finally { 2589 if (!attachInfo.mSetIgnoreDirtyState) { 2590 // Only clear the flag if it was not set during the mView.draw() call 2591 attachInfo.mIgnoreDirtyState = false; 2592 } 2593 } 2594 } finally { 2595 try { 2596 surface.unlockCanvasAndPost(canvas); 2597 } catch (IllegalArgumentException e) { 2598 Log.e(TAG, "Could not unlock surface", e); 2599 mLayoutRequested = true; // ask wm for a new surface next time. 2600 //noinspection ReturnInsideFinallyBlock 2601 return false; 2602 } 2603 2604 if (LOCAL_LOGV) { 2605 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2606 } 2607 } 2608 return true; 2609 } 2610 2611 /** 2612 * We want to draw a highlight around the current accessibility focused. 2613 * Since adding a style for all possible view is not a viable option we 2614 * have this specialized drawing method. 2615 * 2616 * Note: We are doing this here to be able to draw the highlight for 2617 * virtual views in addition to real ones. 2618 * 2619 * @param canvas The canvas on which to draw. 2620 */ 2621 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2622 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2623 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2624 return; 2625 } 2626 2627 final View host = mAccessibilityFocusedHost; 2628 if (host == null || host.mAttachInfo == null) { 2629 return; 2630 } 2631 2632 final Drawable drawable = getAccessibilityFocusedDrawable(); 2633 if (drawable == null) { 2634 return; 2635 } 2636 2637 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2638 final Rect bounds = mAttachInfo.mTmpInvalRect; 2639 if (provider == null) { 2640 host.getBoundsOnScreen(bounds); 2641 } else if (mAccessibilityFocusedVirtualView != null) { 2642 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2643 } else { 2644 return; 2645 } 2646 2647 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2648 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2649 drawable.setBounds(bounds); 2650 drawable.draw(canvas); 2651 } 2652 2653 private Drawable getAccessibilityFocusedDrawable() { 2654 if (mAttachInfo != null) { 2655 // Lazily load the accessibility focus drawable. 2656 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2657 TypedValue value = new TypedValue(); 2658 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2659 R.attr.accessibilityFocusedDrawable, value, true); 2660 if (resolved) { 2661 mAttachInfo.mAccessibilityFocusDrawable = 2662 mView.mContext.getDrawable(value.resourceId); 2663 } 2664 } 2665 return mAttachInfo.mAccessibilityFocusDrawable; 2666 } 2667 return null; 2668 } 2669 2670 /** 2671 * @hide 2672 */ 2673 public void setDrawDuringWindowsAnimating(boolean value) { 2674 mDrawDuringWindowsAnimating = value; 2675 if (value) { 2676 handleDispatchDoneAnimating(); 2677 } 2678 } 2679 2680 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2681 final View.AttachInfo attachInfo = mAttachInfo; 2682 final Rect ci = attachInfo.mContentInsets; 2683 final Rect vi = attachInfo.mVisibleInsets; 2684 int scrollY = 0; 2685 boolean handled = false; 2686 2687 if (vi.left > ci.left || vi.top > ci.top 2688 || vi.right > ci.right || vi.bottom > ci.bottom) { 2689 // We'll assume that we aren't going to change the scroll 2690 // offset, since we want to avoid that unless it is actually 2691 // going to make the focus visible... otherwise we scroll 2692 // all over the place. 2693 scrollY = mScrollY; 2694 // We can be called for two different situations: during a draw, 2695 // to update the scroll position if the focus has changed (in which 2696 // case 'rectangle' is null), or in response to a 2697 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2698 // is non-null and we just want to scroll to whatever that 2699 // rectangle is). 2700 final View focus = mView.findFocus(); 2701 if (focus == null) { 2702 return false; 2703 } 2704 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2705 if (focus != lastScrolledFocus) { 2706 // If the focus has changed, then ignore any requests to scroll 2707 // to a rectangle; first we want to make sure the entire focus 2708 // view is visible. 2709 rectangle = null; 2710 } 2711 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2712 + " rectangle=" + rectangle + " ci=" + ci 2713 + " vi=" + vi); 2714 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2715 // Optimization: if the focus hasn't changed since last 2716 // time, and no layout has happened, then just leave things 2717 // as they are. 2718 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2719 + mScrollY + " vi=" + vi.toShortString()); 2720 } else { 2721 // We need to determine if the currently focused view is 2722 // within the visible part of the window and, if not, apply 2723 // a pan so it can be seen. 2724 mLastScrolledFocus = new WeakReference<View>(focus); 2725 mScrollMayChange = false; 2726 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2727 // Try to find the rectangle from the focus view. 2728 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2729 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2730 + mView.getWidth() + " h=" + mView.getHeight() 2731 + " ci=" + ci.toShortString() 2732 + " vi=" + vi.toShortString()); 2733 if (rectangle == null) { 2734 focus.getFocusedRect(mTempRect); 2735 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2736 + ": focusRect=" + mTempRect.toShortString()); 2737 if (mView instanceof ViewGroup) { 2738 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2739 focus, mTempRect); 2740 } 2741 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2742 "Focus in window: focusRect=" 2743 + mTempRect.toShortString() 2744 + " visRect=" + mVisRect.toShortString()); 2745 } else { 2746 mTempRect.set(rectangle); 2747 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2748 "Request scroll to rect: " 2749 + mTempRect.toShortString() 2750 + " visRect=" + mVisRect.toShortString()); 2751 } 2752 if (mTempRect.intersect(mVisRect)) { 2753 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2754 "Focus window visible rect: " 2755 + mTempRect.toShortString()); 2756 if (mTempRect.height() > 2757 (mView.getHeight()-vi.top-vi.bottom)) { 2758 // If the focus simply is not going to fit, then 2759 // best is probably just to leave things as-is. 2760 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2761 "Too tall; leaving scrollY=" + scrollY); 2762 } else if ((mTempRect.top-scrollY) < vi.top) { 2763 scrollY -= vi.top - (mTempRect.top-scrollY); 2764 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2765 "Top covered; scrollY=" + scrollY); 2766 } else if ((mTempRect.bottom-scrollY) 2767 > (mView.getHeight()-vi.bottom)) { 2768 scrollY += (mTempRect.bottom-scrollY) 2769 - (mView.getHeight()-vi.bottom); 2770 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2771 "Bottom covered; scrollY=" + scrollY); 2772 } 2773 handled = true; 2774 } 2775 } 2776 } 2777 } 2778 2779 if (scrollY != mScrollY) { 2780 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2781 + mScrollY + " , new=" + scrollY); 2782 if (!immediate && mResizeBuffer == null) { 2783 if (mScroller == null) { 2784 mScroller = new Scroller(mView.getContext()); 2785 } 2786 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2787 } else if (mScroller != null) { 2788 mScroller.abortAnimation(); 2789 } 2790 mScrollY = scrollY; 2791 } 2792 2793 return handled; 2794 } 2795 2796 /** 2797 * @hide 2798 */ 2799 public View getAccessibilityFocusedHost() { 2800 return mAccessibilityFocusedHost; 2801 } 2802 2803 /** 2804 * @hide 2805 */ 2806 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2807 return mAccessibilityFocusedVirtualView; 2808 } 2809 2810 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2811 // If we have a virtual view with accessibility focus we need 2812 // to clear the focus and invalidate the virtual view bounds. 2813 if (mAccessibilityFocusedVirtualView != null) { 2814 2815 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2816 View focusHost = mAccessibilityFocusedHost; 2817 2818 // Wipe the state of the current accessibility focus since 2819 // the call into the provider to clear accessibility focus 2820 // will fire an accessibility event which will end up calling 2821 // this method and we want to have clean state when this 2822 // invocation happens. 2823 mAccessibilityFocusedHost = null; 2824 mAccessibilityFocusedVirtualView = null; 2825 2826 // Clear accessibility focus on the host after clearing state since 2827 // this method may be reentrant. 2828 focusHost.clearAccessibilityFocusNoCallbacks(); 2829 2830 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2831 if (provider != null) { 2832 // Invalidate the area of the cleared accessibility focus. 2833 focusNode.getBoundsInParent(mTempRect); 2834 focusHost.invalidate(mTempRect); 2835 // Clear accessibility focus in the virtual node. 2836 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2837 focusNode.getSourceNodeId()); 2838 provider.performAction(virtualNodeId, 2839 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2840 } 2841 focusNode.recycle(); 2842 } 2843 if (mAccessibilityFocusedHost != null) { 2844 // Clear accessibility focus in the view. 2845 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2846 } 2847 2848 // Set the new focus host and node. 2849 mAccessibilityFocusedHost = view; 2850 mAccessibilityFocusedVirtualView = node; 2851 2852 if (mAttachInfo.mHardwareRenderer != null) { 2853 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2854 } 2855 } 2856 2857 @Override 2858 public void requestChildFocus(View child, View focused) { 2859 if (DEBUG_INPUT_RESIZE) { 2860 Log.v(TAG, "Request child focus: focus now " + focused); 2861 } 2862 checkThread(); 2863 scheduleTraversals(); 2864 } 2865 2866 @Override 2867 public void clearChildFocus(View child) { 2868 if (DEBUG_INPUT_RESIZE) { 2869 Log.v(TAG, "Clearing child focus"); 2870 } 2871 checkThread(); 2872 scheduleTraversals(); 2873 } 2874 2875 @Override 2876 public ViewParent getParentForAccessibility() { 2877 return null; 2878 } 2879 2880 @Override 2881 public void focusableViewAvailable(View v) { 2882 checkThread(); 2883 if (mView != null) { 2884 if (!mView.hasFocus()) { 2885 v.requestFocus(); 2886 } else { 2887 // the one case where will transfer focus away from the current one 2888 // is if the current view is a view group that prefers to give focus 2889 // to its children first AND the view is a descendant of it. 2890 View focused = mView.findFocus(); 2891 if (focused instanceof ViewGroup) { 2892 ViewGroup group = (ViewGroup) focused; 2893 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2894 && isViewDescendantOf(v, focused)) { 2895 v.requestFocus(); 2896 } 2897 } 2898 } 2899 } 2900 } 2901 2902 @Override 2903 public void recomputeViewAttributes(View child) { 2904 checkThread(); 2905 if (mView == child) { 2906 mAttachInfo.mRecomputeGlobalAttributes = true; 2907 if (!mWillDrawSoon) { 2908 scheduleTraversals(); 2909 } 2910 } 2911 } 2912 2913 void dispatchDetachedFromWindow() { 2914 if (mView != null && mView.mAttachInfo != null) { 2915 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2916 mView.dispatchDetachedFromWindow(); 2917 } 2918 2919 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2920 mAccessibilityManager.removeAccessibilityStateChangeListener( 2921 mAccessibilityInteractionConnectionManager); 2922 mAccessibilityManager.removeHighTextContrastStateChangeListener( 2923 mHighContrastTextManager); 2924 removeSendWindowContentChangedCallback(); 2925 2926 destroyHardwareRenderer(); 2927 2928 setAccessibilityFocus(null, null); 2929 2930 mView.assignParent(null); 2931 mView = null; 2932 mAttachInfo.mRootView = null; 2933 2934 mSurface.release(); 2935 2936 if (mInputQueueCallback != null && mInputQueue != null) { 2937 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2938 mInputQueue.dispose(); 2939 mInputQueueCallback = null; 2940 mInputQueue = null; 2941 } 2942 if (mInputEventReceiver != null) { 2943 mInputEventReceiver.dispose(); 2944 mInputEventReceiver = null; 2945 } 2946 try { 2947 mWindowSession.remove(mWindow); 2948 } catch (RemoteException e) { 2949 } 2950 2951 // Dispose the input channel after removing the window so the Window Manager 2952 // doesn't interpret the input channel being closed as an abnormal termination. 2953 if (mInputChannel != null) { 2954 mInputChannel.dispose(); 2955 mInputChannel = null; 2956 } 2957 2958 mDisplayManager.unregisterDisplayListener(mDisplayListener); 2959 2960 unscheduleTraversals(); 2961 } 2962 2963 void updateConfiguration(Configuration config, boolean force) { 2964 if (DEBUG_CONFIGURATION) Log.v(TAG, 2965 "Applying new config to window " 2966 + mWindowAttributes.getTitle() 2967 + ": " + config); 2968 2969 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2970 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2971 config = new Configuration(config); 2972 ci.applyToConfiguration(mNoncompatDensity, config); 2973 } 2974 2975 synchronized (sConfigCallbacks) { 2976 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2977 sConfigCallbacks.get(i).onConfigurationChanged(config); 2978 } 2979 } 2980 if (mView != null) { 2981 // At this point the resources have been updated to 2982 // have the most recent config, whatever that is. Use 2983 // the one in them which may be newer. 2984 config = mView.getResources().getConfiguration(); 2985 if (force || mLastConfiguration.diff(config) != 0) { 2986 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2987 final int currentLayoutDirection = config.getLayoutDirection(); 2988 mLastConfiguration.setTo(config); 2989 if (lastLayoutDirection != currentLayoutDirection && 2990 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2991 mView.setLayoutDirection(currentLayoutDirection); 2992 } 2993 mView.dispatchConfigurationChanged(config); 2994 } 2995 } 2996 } 2997 2998 /** 2999 * Return true if child is an ancestor of parent, (or equal to the parent). 3000 */ 3001 public static boolean isViewDescendantOf(View child, View parent) { 3002 if (child == parent) { 3003 return true; 3004 } 3005 3006 final ViewParent theParent = child.getParent(); 3007 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3008 } 3009 3010 private static void forceLayout(View view) { 3011 view.forceLayout(); 3012 if (view instanceof ViewGroup) { 3013 ViewGroup group = (ViewGroup) view; 3014 final int count = group.getChildCount(); 3015 for (int i = 0; i < count; i++) { 3016 forceLayout(group.getChildAt(i)); 3017 } 3018 } 3019 } 3020 3021 private final static int MSG_INVALIDATE = 1; 3022 private final static int MSG_INVALIDATE_RECT = 2; 3023 private final static int MSG_DIE = 3; 3024 private final static int MSG_RESIZED = 4; 3025 private final static int MSG_RESIZED_REPORT = 5; 3026 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3027 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3028 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3029 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3030 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3031 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 3032 private final static int MSG_CHECK_FOCUS = 13; 3033 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3034 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3035 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3036 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3037 private final static int MSG_UPDATE_CONFIGURATION = 18; 3038 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3039 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3040 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 3041 private final static int MSG_INVALIDATE_WORLD = 23; 3042 private final static int MSG_WINDOW_MOVED = 24; 3043 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 25; 3044 3045 final class ViewRootHandler extends Handler { 3046 @Override 3047 public String getMessageName(Message message) { 3048 switch (message.what) { 3049 case MSG_INVALIDATE: 3050 return "MSG_INVALIDATE"; 3051 case MSG_INVALIDATE_RECT: 3052 return "MSG_INVALIDATE_RECT"; 3053 case MSG_DIE: 3054 return "MSG_DIE"; 3055 case MSG_RESIZED: 3056 return "MSG_RESIZED"; 3057 case MSG_RESIZED_REPORT: 3058 return "MSG_RESIZED_REPORT"; 3059 case MSG_WINDOW_FOCUS_CHANGED: 3060 return "MSG_WINDOW_FOCUS_CHANGED"; 3061 case MSG_DISPATCH_INPUT_EVENT: 3062 return "MSG_DISPATCH_INPUT_EVENT"; 3063 case MSG_DISPATCH_APP_VISIBILITY: 3064 return "MSG_DISPATCH_APP_VISIBILITY"; 3065 case MSG_DISPATCH_GET_NEW_SURFACE: 3066 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3067 case MSG_DISPATCH_KEY_FROM_IME: 3068 return "MSG_DISPATCH_KEY_FROM_IME"; 3069 case MSG_FINISH_INPUT_CONNECTION: 3070 return "MSG_FINISH_INPUT_CONNECTION"; 3071 case MSG_CHECK_FOCUS: 3072 return "MSG_CHECK_FOCUS"; 3073 case MSG_CLOSE_SYSTEM_DIALOGS: 3074 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3075 case MSG_DISPATCH_DRAG_EVENT: 3076 return "MSG_DISPATCH_DRAG_EVENT"; 3077 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3078 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3079 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3080 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3081 case MSG_UPDATE_CONFIGURATION: 3082 return "MSG_UPDATE_CONFIGURATION"; 3083 case MSG_PROCESS_INPUT_EVENTS: 3084 return "MSG_PROCESS_INPUT_EVENTS"; 3085 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3086 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3087 case MSG_DISPATCH_DONE_ANIMATING: 3088 return "MSG_DISPATCH_DONE_ANIMATING"; 3089 case MSG_WINDOW_MOVED: 3090 return "MSG_WINDOW_MOVED"; 3091 case MSG_SYNTHESIZE_INPUT_EVENT: 3092 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3093 } 3094 return super.getMessageName(message); 3095 } 3096 3097 @Override 3098 public void handleMessage(Message msg) { 3099 switch (msg.what) { 3100 case MSG_INVALIDATE: 3101 ((View) msg.obj).invalidate(); 3102 break; 3103 case MSG_INVALIDATE_RECT: 3104 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3105 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3106 info.recycle(); 3107 break; 3108 case MSG_PROCESS_INPUT_EVENTS: 3109 mProcessInputEventsScheduled = false; 3110 doProcessInputEvents(); 3111 break; 3112 case MSG_DISPATCH_APP_VISIBILITY: 3113 handleAppVisibility(msg.arg1 != 0); 3114 break; 3115 case MSG_DISPATCH_GET_NEW_SURFACE: 3116 handleGetNewSurface(); 3117 break; 3118 case MSG_RESIZED: { 3119 // Recycled in the fall through... 3120 SomeArgs args = (SomeArgs) msg.obj; 3121 if (mWinFrame.equals(args.arg1) 3122 && mPendingOverscanInsets.equals(args.arg5) 3123 && mPendingContentInsets.equals(args.arg2) 3124 && mPendingStableInsets.equals(args.arg6) 3125 && mPendingVisibleInsets.equals(args.arg3) 3126 && args.arg4 == null) { 3127 break; 3128 } 3129 } // fall through... 3130 case MSG_RESIZED_REPORT: 3131 if (mAdded) { 3132 SomeArgs args = (SomeArgs) msg.obj; 3133 3134 Configuration config = (Configuration) args.arg4; 3135 if (config != null) { 3136 updateConfiguration(config, false); 3137 } 3138 3139 mWinFrame.set((Rect) args.arg1); 3140 mPendingOverscanInsets.set((Rect) args.arg5); 3141 mPendingContentInsets.set((Rect) args.arg2); 3142 mPendingStableInsets.set((Rect) args.arg6); 3143 mPendingVisibleInsets.set((Rect) args.arg3); 3144 3145 args.recycle(); 3146 3147 if (msg.what == MSG_RESIZED_REPORT) { 3148 mReportNextDraw = true; 3149 } 3150 3151 if (mView != null) { 3152 forceLayout(mView); 3153 } 3154 3155 requestLayout(); 3156 } 3157 break; 3158 case MSG_WINDOW_MOVED: 3159 if (mAdded) { 3160 final int w = mWinFrame.width(); 3161 final int h = mWinFrame.height(); 3162 final int l = msg.arg1; 3163 final int t = msg.arg2; 3164 mWinFrame.left = l; 3165 mWinFrame.right = l + w; 3166 mWinFrame.top = t; 3167 mWinFrame.bottom = t + h; 3168 3169 if (mView != null) { 3170 forceLayout(mView); 3171 } 3172 requestLayout(); 3173 } 3174 break; 3175 case MSG_WINDOW_FOCUS_CHANGED: { 3176 if (mAdded) { 3177 boolean hasWindowFocus = msg.arg1 != 0; 3178 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3179 3180 profileRendering(hasWindowFocus); 3181 3182 if (hasWindowFocus) { 3183 boolean inTouchMode = msg.arg2 != 0; 3184 ensureTouchModeLocally(inTouchMode); 3185 3186 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3187 mFullRedrawNeeded = true; 3188 try { 3189 final WindowManager.LayoutParams lp = mWindowAttributes; 3190 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3191 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3192 mWidth, mHeight, mSurface, surfaceInsets); 3193 } catch (OutOfResourcesException e) { 3194 Log.e(TAG, "OutOfResourcesException locking surface", e); 3195 try { 3196 if (!mWindowSession.outOfMemory(mWindow)) { 3197 Slog.w(TAG, "No processes killed for memory; killing self"); 3198 Process.killProcess(Process.myPid()); 3199 } 3200 } catch (RemoteException ex) { 3201 } 3202 // Retry in a bit. 3203 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3204 return; 3205 } 3206 } 3207 } 3208 3209 mLastWasImTarget = WindowManager.LayoutParams 3210 .mayUseInputMethod(mWindowAttributes.flags); 3211 3212 InputMethodManager imm = InputMethodManager.peekInstance(); 3213 if (mView != null) { 3214 if (hasWindowFocus && imm != null && mLastWasImTarget && 3215 !isInLocalFocusMode()) { 3216 imm.startGettingWindowFocus(mView); 3217 } 3218 mAttachInfo.mKeyDispatchState.reset(); 3219 mView.dispatchWindowFocusChanged(hasWindowFocus); 3220 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3221 } 3222 3223 // Note: must be done after the focus change callbacks, 3224 // so all of the view state is set up correctly. 3225 if (hasWindowFocus) { 3226 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3227 imm.onWindowFocus(mView, mView.findFocus(), 3228 mWindowAttributes.softInputMode, 3229 !mHasHadWindowFocus, mWindowAttributes.flags); 3230 } 3231 // Clear the forward bit. We can just do this directly, since 3232 // the window manager doesn't care about it. 3233 mWindowAttributes.softInputMode &= 3234 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3235 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3236 .softInputMode &= 3237 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3238 mHasHadWindowFocus = true; 3239 } 3240 3241 if (mView != null && mAccessibilityManager.isEnabled()) { 3242 if (hasWindowFocus) { 3243 mView.sendAccessibilityEvent( 3244 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3245 } 3246 } 3247 } 3248 } break; 3249 case MSG_DIE: 3250 doDie(); 3251 break; 3252 case MSG_DISPATCH_INPUT_EVENT: { 3253 SomeArgs args = (SomeArgs)msg.obj; 3254 InputEvent event = (InputEvent)args.arg1; 3255 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3256 enqueueInputEvent(event, receiver, 0, true); 3257 args.recycle(); 3258 } break; 3259 case MSG_SYNTHESIZE_INPUT_EVENT: { 3260 InputEvent event = (InputEvent)msg.obj; 3261 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3262 } break; 3263 case MSG_DISPATCH_KEY_FROM_IME: { 3264 if (LOCAL_LOGV) Log.v( 3265 TAG, "Dispatching key " 3266 + msg.obj + " from IME to " + mView); 3267 KeyEvent event = (KeyEvent)msg.obj; 3268 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3269 // The IME is trying to say this event is from the 3270 // system! Bad bad bad! 3271 //noinspection UnusedAssignment 3272 event = KeyEvent.changeFlags(event, event.getFlags() & 3273 ~KeyEvent.FLAG_FROM_SYSTEM); 3274 } 3275 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3276 } break; 3277 case MSG_FINISH_INPUT_CONNECTION: { 3278 InputMethodManager imm = InputMethodManager.peekInstance(); 3279 if (imm != null) { 3280 imm.reportFinishInputConnection((InputConnection)msg.obj); 3281 } 3282 } break; 3283 case MSG_CHECK_FOCUS: { 3284 InputMethodManager imm = InputMethodManager.peekInstance(); 3285 if (imm != null) { 3286 imm.checkFocus(); 3287 } 3288 } break; 3289 case MSG_CLOSE_SYSTEM_DIALOGS: { 3290 if (mView != null) { 3291 mView.onCloseSystemDialogs((String)msg.obj); 3292 } 3293 } break; 3294 case MSG_DISPATCH_DRAG_EVENT: 3295 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3296 DragEvent event = (DragEvent)msg.obj; 3297 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3298 handleDragEvent(event); 3299 } break; 3300 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3301 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3302 } break; 3303 case MSG_UPDATE_CONFIGURATION: { 3304 Configuration config = (Configuration)msg.obj; 3305 if (config.isOtherSeqNewer(mLastConfiguration)) { 3306 config = mLastConfiguration; 3307 } 3308 updateConfiguration(config, false); 3309 } break; 3310 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3311 setAccessibilityFocus(null, null); 3312 } break; 3313 case MSG_DISPATCH_DONE_ANIMATING: { 3314 handleDispatchDoneAnimating(); 3315 } break; 3316 case MSG_INVALIDATE_WORLD: { 3317 if (mView != null) { 3318 invalidateWorld(mView); 3319 } 3320 } break; 3321 } 3322 } 3323 } 3324 3325 final ViewRootHandler mHandler = new ViewRootHandler(); 3326 3327 /** 3328 * Something in the current window tells us we need to change the touch mode. For 3329 * example, we are not in touch mode, and the user touches the screen. 3330 * 3331 * If the touch mode has changed, tell the window manager, and handle it locally. 3332 * 3333 * @param inTouchMode Whether we want to be in touch mode. 3334 * @return True if the touch mode changed and focus changed was changed as a result 3335 */ 3336 boolean ensureTouchMode(boolean inTouchMode) { 3337 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3338 + "touch mode is " + mAttachInfo.mInTouchMode); 3339 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3340 3341 // tell the window manager 3342 try { 3343 if (!isInLocalFocusMode()) { 3344 mWindowSession.setInTouchMode(inTouchMode); 3345 } 3346 } catch (RemoteException e) { 3347 throw new RuntimeException(e); 3348 } 3349 3350 // handle the change 3351 return ensureTouchModeLocally(inTouchMode); 3352 } 3353 3354 /** 3355 * Ensure that the touch mode for this window is set, and if it is changing, 3356 * take the appropriate action. 3357 * @param inTouchMode Whether we want to be in touch mode. 3358 * @return True if the touch mode changed and focus changed was changed as a result 3359 */ 3360 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3361 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3362 + "touch mode is " + mAttachInfo.mInTouchMode); 3363 3364 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3365 3366 mAttachInfo.mInTouchMode = inTouchMode; 3367 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3368 3369 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3370 } 3371 3372 private boolean enterTouchMode() { 3373 if (mView != null && mView.hasFocus()) { 3374 // note: not relying on mFocusedView here because this could 3375 // be when the window is first being added, and mFocused isn't 3376 // set yet. 3377 final View focused = mView.findFocus(); 3378 if (focused != null && !focused.isFocusableInTouchMode()) { 3379 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3380 if (ancestorToTakeFocus != null) { 3381 // there is an ancestor that wants focus after its 3382 // descendants that is focusable in touch mode.. give it 3383 // focus 3384 return ancestorToTakeFocus.requestFocus(); 3385 } else { 3386 // There's nothing to focus. Clear and propagate through the 3387 // hierarchy, but don't attempt to place new focus. 3388 focused.clearFocusInternal(null, true, false); 3389 return true; 3390 } 3391 } 3392 } 3393 return false; 3394 } 3395 3396 /** 3397 * Find an ancestor of focused that wants focus after its descendants and is 3398 * focusable in touch mode. 3399 * @param focused The currently focused view. 3400 * @return An appropriate view, or null if no such view exists. 3401 */ 3402 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3403 ViewParent parent = focused.getParent(); 3404 while (parent instanceof ViewGroup) { 3405 final ViewGroup vgParent = (ViewGroup) parent; 3406 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3407 && vgParent.isFocusableInTouchMode()) { 3408 return vgParent; 3409 } 3410 if (vgParent.isRootNamespace()) { 3411 return null; 3412 } else { 3413 parent = vgParent.getParent(); 3414 } 3415 } 3416 return null; 3417 } 3418 3419 private boolean leaveTouchMode() { 3420 if (mView != null) { 3421 if (mView.hasFocus()) { 3422 View focusedView = mView.findFocus(); 3423 if (!(focusedView instanceof ViewGroup)) { 3424 // some view has focus, let it keep it 3425 return false; 3426 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3427 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3428 // some view group has focus, and doesn't prefer its children 3429 // over itself for focus, so let them keep it. 3430 return false; 3431 } 3432 } 3433 3434 // find the best view to give focus to in this brave new non-touch-mode 3435 // world 3436 final View focused = focusSearch(null, View.FOCUS_DOWN); 3437 if (focused != null) { 3438 return focused.requestFocus(View.FOCUS_DOWN); 3439 } 3440 } 3441 return false; 3442 } 3443 3444 /** 3445 * Base class for implementing a stage in the chain of responsibility 3446 * for processing input events. 3447 * <p> 3448 * Events are delivered to the stage by the {@link #deliver} method. The stage 3449 * then has the choice of finishing the event or forwarding it to the next stage. 3450 * </p> 3451 */ 3452 abstract class InputStage { 3453 private final InputStage mNext; 3454 3455 protected static final int FORWARD = 0; 3456 protected static final int FINISH_HANDLED = 1; 3457 protected static final int FINISH_NOT_HANDLED = 2; 3458 3459 /** 3460 * Creates an input stage. 3461 * @param next The next stage to which events should be forwarded. 3462 */ 3463 public InputStage(InputStage next) { 3464 mNext = next; 3465 } 3466 3467 /** 3468 * Delivers an event to be processed. 3469 */ 3470 public final void deliver(QueuedInputEvent q) { 3471 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3472 forward(q); 3473 } else if (shouldDropInputEvent(q)) { 3474 finish(q, false); 3475 } else { 3476 apply(q, onProcess(q)); 3477 } 3478 } 3479 3480 /** 3481 * Marks the the input event as finished then forwards it to the next stage. 3482 */ 3483 protected void finish(QueuedInputEvent q, boolean handled) { 3484 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3485 if (handled) { 3486 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3487 } 3488 forward(q); 3489 } 3490 3491 /** 3492 * Forwards the event to the next stage. 3493 */ 3494 protected void forward(QueuedInputEvent q) { 3495 onDeliverToNext(q); 3496 } 3497 3498 /** 3499 * Applies a result code from {@link #onProcess} to the specified event. 3500 */ 3501 protected void apply(QueuedInputEvent q, int result) { 3502 if (result == FORWARD) { 3503 forward(q); 3504 } else if (result == FINISH_HANDLED) { 3505 finish(q, true); 3506 } else if (result == FINISH_NOT_HANDLED) { 3507 finish(q, false); 3508 } else { 3509 throw new IllegalArgumentException("Invalid result: " + result); 3510 } 3511 } 3512 3513 /** 3514 * Called when an event is ready to be processed. 3515 * @return A result code indicating how the event was handled. 3516 */ 3517 protected int onProcess(QueuedInputEvent q) { 3518 return FORWARD; 3519 } 3520 3521 /** 3522 * Called when an event is being delivered to the next stage. 3523 */ 3524 protected void onDeliverToNext(QueuedInputEvent q) { 3525 if (DEBUG_INPUT_STAGES) { 3526 Log.v(TAG, "Done with " + getClass().getSimpleName() + ". " + q); 3527 } 3528 if (mNext != null) { 3529 mNext.deliver(q); 3530 } else { 3531 finishInputEvent(q); 3532 } 3533 } 3534 3535 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3536 if (mView == null || !mAdded) { 3537 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3538 return true; 3539 } else if (!mAttachInfo.mHasWindowFocus && 3540 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3541 !isTerminalInputEvent(q.mEvent)) { 3542 // If this is a focused event and the window doesn't currently have input focus, 3543 // then drop this event. This could be an event that came back from the previous 3544 // stage but the window has lost focus in the meantime. 3545 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3546 return true; 3547 } 3548 return false; 3549 } 3550 3551 void dump(String prefix, PrintWriter writer) { 3552 if (mNext != null) { 3553 mNext.dump(prefix, writer); 3554 } 3555 } 3556 } 3557 3558 /** 3559 * Base class for implementing an input pipeline stage that supports 3560 * asynchronous and out-of-order processing of input events. 3561 * <p> 3562 * In addition to what a normal input stage can do, an asynchronous 3563 * input stage may also defer an input event that has been delivered to it 3564 * and finish or forward it later. 3565 * </p> 3566 */ 3567 abstract class AsyncInputStage extends InputStage { 3568 private final String mTraceCounter; 3569 3570 private QueuedInputEvent mQueueHead; 3571 private QueuedInputEvent mQueueTail; 3572 private int mQueueLength; 3573 3574 protected static final int DEFER = 3; 3575 3576 /** 3577 * Creates an asynchronous input stage. 3578 * @param next The next stage to which events should be forwarded. 3579 * @param traceCounter The name of a counter to record the size of 3580 * the queue of pending events. 3581 */ 3582 public AsyncInputStage(InputStage next, String traceCounter) { 3583 super(next); 3584 mTraceCounter = traceCounter; 3585 } 3586 3587 /** 3588 * Marks the event as deferred, which is to say that it will be handled 3589 * asynchronously. The caller is responsible for calling {@link #forward} 3590 * or {@link #finish} later when it is done handling the event. 3591 */ 3592 protected void defer(QueuedInputEvent q) { 3593 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3594 enqueue(q); 3595 } 3596 3597 @Override 3598 protected void forward(QueuedInputEvent q) { 3599 // Clear the deferred flag. 3600 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3601 3602 // Fast path if the queue is empty. 3603 QueuedInputEvent curr = mQueueHead; 3604 if (curr == null) { 3605 super.forward(q); 3606 return; 3607 } 3608 3609 // Determine whether the event must be serialized behind any others 3610 // before it can be delivered to the next stage. This is done because 3611 // deferred events might be handled out of order by the stage. 3612 final int deviceId = q.mEvent.getDeviceId(); 3613 QueuedInputEvent prev = null; 3614 boolean blocked = false; 3615 while (curr != null && curr != q) { 3616 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3617 blocked = true; 3618 } 3619 prev = curr; 3620 curr = curr.mNext; 3621 } 3622 3623 // If the event is blocked, then leave it in the queue to be delivered later. 3624 // Note that the event might not yet be in the queue if it was not previously 3625 // deferred so we will enqueue it if needed. 3626 if (blocked) { 3627 if (curr == null) { 3628 enqueue(q); 3629 } 3630 return; 3631 } 3632 3633 // The event is not blocked. Deliver it immediately. 3634 if (curr != null) { 3635 curr = curr.mNext; 3636 dequeue(q, prev); 3637 } 3638 super.forward(q); 3639 3640 // Dequeuing this event may have unblocked successors. Deliver them. 3641 while (curr != null) { 3642 if (deviceId == curr.mEvent.getDeviceId()) { 3643 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3644 break; 3645 } 3646 QueuedInputEvent next = curr.mNext; 3647 dequeue(curr, prev); 3648 super.forward(curr); 3649 curr = next; 3650 } else { 3651 prev = curr; 3652 curr = curr.mNext; 3653 } 3654 } 3655 } 3656 3657 @Override 3658 protected void apply(QueuedInputEvent q, int result) { 3659 if (result == DEFER) { 3660 defer(q); 3661 } else { 3662 super.apply(q, result); 3663 } 3664 } 3665 3666 private void enqueue(QueuedInputEvent q) { 3667 if (mQueueTail == null) { 3668 mQueueHead = q; 3669 mQueueTail = q; 3670 } else { 3671 mQueueTail.mNext = q; 3672 mQueueTail = q; 3673 } 3674 3675 mQueueLength += 1; 3676 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3677 } 3678 3679 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3680 if (prev == null) { 3681 mQueueHead = q.mNext; 3682 } else { 3683 prev.mNext = q.mNext; 3684 } 3685 if (mQueueTail == q) { 3686 mQueueTail = prev; 3687 } 3688 q.mNext = null; 3689 3690 mQueueLength -= 1; 3691 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3692 } 3693 3694 @Override 3695 void dump(String prefix, PrintWriter writer) { 3696 writer.print(prefix); 3697 writer.print(getClass().getName()); 3698 writer.print(": mQueueLength="); 3699 writer.println(mQueueLength); 3700 3701 super.dump(prefix, writer); 3702 } 3703 } 3704 3705 /** 3706 * Delivers pre-ime input events to a native activity. 3707 * Does not support pointer events. 3708 */ 3709 final class NativePreImeInputStage extends AsyncInputStage 3710 implements InputQueue.FinishedInputEventCallback { 3711 public NativePreImeInputStage(InputStage next, String traceCounter) { 3712 super(next, traceCounter); 3713 } 3714 3715 @Override 3716 protected int onProcess(QueuedInputEvent q) { 3717 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3718 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3719 return DEFER; 3720 } 3721 return FORWARD; 3722 } 3723 3724 @Override 3725 public void onFinishedInputEvent(Object token, boolean handled) { 3726 QueuedInputEvent q = (QueuedInputEvent)token; 3727 if (handled) { 3728 finish(q, true); 3729 return; 3730 } 3731 forward(q); 3732 } 3733 } 3734 3735 /** 3736 * Delivers pre-ime input events to the view hierarchy. 3737 * Does not support pointer events. 3738 */ 3739 final class ViewPreImeInputStage extends InputStage { 3740 public ViewPreImeInputStage(InputStage next) { 3741 super(next); 3742 } 3743 3744 @Override 3745 protected int onProcess(QueuedInputEvent q) { 3746 if (q.mEvent instanceof KeyEvent) { 3747 return processKeyEvent(q); 3748 } 3749 return FORWARD; 3750 } 3751 3752 private int processKeyEvent(QueuedInputEvent q) { 3753 final KeyEvent event = (KeyEvent)q.mEvent; 3754 if (mView.dispatchKeyEventPreIme(event)) { 3755 return FINISH_HANDLED; 3756 } 3757 return FORWARD; 3758 } 3759 } 3760 3761 /** 3762 * Delivers input events to the ime. 3763 * Does not support pointer events. 3764 */ 3765 final class ImeInputStage extends AsyncInputStage 3766 implements InputMethodManager.FinishedInputEventCallback { 3767 public ImeInputStage(InputStage next, String traceCounter) { 3768 super(next, traceCounter); 3769 } 3770 3771 @Override 3772 protected int onProcess(QueuedInputEvent q) { 3773 if (mLastWasImTarget && !isInLocalFocusMode()) { 3774 InputMethodManager imm = InputMethodManager.peekInstance(); 3775 if (imm != null) { 3776 final InputEvent event = q.mEvent; 3777 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3778 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3779 if (result == InputMethodManager.DISPATCH_HANDLED) { 3780 return FINISH_HANDLED; 3781 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3782 // The IME could not handle it, so skip along to the next InputStage 3783 return FORWARD; 3784 } else { 3785 return DEFER; // callback will be invoked later 3786 } 3787 } 3788 } 3789 return FORWARD; 3790 } 3791 3792 @Override 3793 public void onFinishedInputEvent(Object token, boolean handled) { 3794 QueuedInputEvent q = (QueuedInputEvent)token; 3795 if (handled) { 3796 finish(q, true); 3797 return; 3798 } 3799 forward(q); 3800 } 3801 } 3802 3803 /** 3804 * Performs early processing of post-ime input events. 3805 */ 3806 final class EarlyPostImeInputStage extends InputStage { 3807 public EarlyPostImeInputStage(InputStage next) { 3808 super(next); 3809 } 3810 3811 @Override 3812 protected int onProcess(QueuedInputEvent q) { 3813 if (q.mEvent instanceof KeyEvent) { 3814 return processKeyEvent(q); 3815 } else { 3816 final int source = q.mEvent.getSource(); 3817 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3818 return processPointerEvent(q); 3819 } 3820 } 3821 return FORWARD; 3822 } 3823 3824 private int processKeyEvent(QueuedInputEvent q) { 3825 final KeyEvent event = (KeyEvent)q.mEvent; 3826 3827 // If the key's purpose is to exit touch mode then we consume it 3828 // and consider it handled. 3829 if (checkForLeavingTouchModeAndConsume(event)) { 3830 return FINISH_HANDLED; 3831 } 3832 3833 // Make sure the fallback event policy sees all keys that will be 3834 // delivered to the view hierarchy. 3835 mFallbackEventHandler.preDispatchKeyEvent(event); 3836 return FORWARD; 3837 } 3838 3839 private int processPointerEvent(QueuedInputEvent q) { 3840 final MotionEvent event = (MotionEvent)q.mEvent; 3841 3842 // Translate the pointer event for compatibility, if needed. 3843 if (mTranslator != null) { 3844 mTranslator.translateEventInScreenToAppWindow(event); 3845 } 3846 3847 // Enter touch mode on down or scroll. 3848 final int action = event.getAction(); 3849 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3850 ensureTouchMode(true); 3851 } 3852 3853 // Offset the scroll position. 3854 if (mCurScrollY != 0) { 3855 event.offsetLocation(0, mCurScrollY); 3856 } 3857 3858 // Remember the touch position for possible drag-initiation. 3859 if (event.isTouchEvent()) { 3860 mLastTouchPoint.x = event.getRawX(); 3861 mLastTouchPoint.y = event.getRawY(); 3862 } 3863 return FORWARD; 3864 } 3865 } 3866 3867 /** 3868 * Delivers post-ime input events to a native activity. 3869 */ 3870 final class NativePostImeInputStage extends AsyncInputStage 3871 implements InputQueue.FinishedInputEventCallback { 3872 public NativePostImeInputStage(InputStage next, String traceCounter) { 3873 super(next, traceCounter); 3874 } 3875 3876 @Override 3877 protected int onProcess(QueuedInputEvent q) { 3878 if (mInputQueue != null) { 3879 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3880 return DEFER; 3881 } 3882 return FORWARD; 3883 } 3884 3885 @Override 3886 public void onFinishedInputEvent(Object token, boolean handled) { 3887 QueuedInputEvent q = (QueuedInputEvent)token; 3888 if (handled) { 3889 finish(q, true); 3890 return; 3891 } 3892 forward(q); 3893 } 3894 } 3895 3896 /** 3897 * Delivers post-ime input events to the view hierarchy. 3898 */ 3899 final class ViewPostImeInputStage extends InputStage { 3900 public ViewPostImeInputStage(InputStage next) { 3901 super(next); 3902 } 3903 3904 @Override 3905 protected int onProcess(QueuedInputEvent q) { 3906 if (q.mEvent instanceof KeyEvent) { 3907 return processKeyEvent(q); 3908 } else { 3909 // If delivering a new non-key event, make sure the window is 3910 // now allowed to start updating. 3911 handleDispatchDoneAnimating(); 3912 final int source = q.mEvent.getSource(); 3913 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3914 return processPointerEvent(q); 3915 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3916 return processTrackballEvent(q); 3917 } else { 3918 return processGenericMotionEvent(q); 3919 } 3920 } 3921 } 3922 3923 @Override 3924 protected void onDeliverToNext(QueuedInputEvent q) { 3925 if (mUnbufferedInputDispatch 3926 && q.mEvent instanceof MotionEvent 3927 && ((MotionEvent)q.mEvent).isTouchEvent() 3928 && isTerminalInputEvent(q.mEvent)) { 3929 mUnbufferedInputDispatch = false; 3930 scheduleConsumeBatchedInput(); 3931 } 3932 super.onDeliverToNext(q); 3933 } 3934 3935 private int processKeyEvent(QueuedInputEvent q) { 3936 final KeyEvent event = (KeyEvent)q.mEvent; 3937 3938 if (event.getAction() != KeyEvent.ACTION_UP) { 3939 // If delivering a new key event, make sure the window is 3940 // now allowed to start updating. 3941 handleDispatchDoneAnimating(); 3942 } 3943 3944 // Deliver the key to the view hierarchy. 3945 if (mView.dispatchKeyEvent(event)) { 3946 return FINISH_HANDLED; 3947 } 3948 3949 if (shouldDropInputEvent(q)) { 3950 return FINISH_NOT_HANDLED; 3951 } 3952 3953 // If the Control modifier is held, try to interpret the key as a shortcut. 3954 if (event.getAction() == KeyEvent.ACTION_DOWN 3955 && event.isCtrlPressed() 3956 && event.getRepeatCount() == 0 3957 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3958 if (mView.dispatchKeyShortcutEvent(event)) { 3959 return FINISH_HANDLED; 3960 } 3961 if (shouldDropInputEvent(q)) { 3962 return FINISH_NOT_HANDLED; 3963 } 3964 } 3965 3966 // Apply the fallback event policy. 3967 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3968 return FINISH_HANDLED; 3969 } 3970 if (shouldDropInputEvent(q)) { 3971 return FINISH_NOT_HANDLED; 3972 } 3973 3974 // Handle automatic focus changes. 3975 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3976 int direction = 0; 3977 switch (event.getKeyCode()) { 3978 case KeyEvent.KEYCODE_DPAD_LEFT: 3979 if (event.hasNoModifiers()) { 3980 direction = View.FOCUS_LEFT; 3981 } 3982 break; 3983 case KeyEvent.KEYCODE_DPAD_RIGHT: 3984 if (event.hasNoModifiers()) { 3985 direction = View.FOCUS_RIGHT; 3986 } 3987 break; 3988 case KeyEvent.KEYCODE_DPAD_UP: 3989 if (event.hasNoModifiers()) { 3990 direction = View.FOCUS_UP; 3991 } 3992 break; 3993 case KeyEvent.KEYCODE_DPAD_DOWN: 3994 if (event.hasNoModifiers()) { 3995 direction = View.FOCUS_DOWN; 3996 } 3997 break; 3998 case KeyEvent.KEYCODE_TAB: 3999 if (event.hasNoModifiers()) { 4000 direction = View.FOCUS_FORWARD; 4001 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4002 direction = View.FOCUS_BACKWARD; 4003 } 4004 break; 4005 } 4006 if (direction != 0) { 4007 View focused = mView.findFocus(); 4008 if (focused != null) { 4009 View v = focused.focusSearch(direction); 4010 if (v != null && v != focused) { 4011 // do the math the get the interesting rect 4012 // of previous focused into the coord system of 4013 // newly focused view 4014 focused.getFocusedRect(mTempRect); 4015 if (mView instanceof ViewGroup) { 4016 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4017 focused, mTempRect); 4018 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4019 v, mTempRect); 4020 } 4021 if (v.requestFocus(direction, mTempRect)) { 4022 playSoundEffect(SoundEffectConstants 4023 .getContantForFocusDirection(direction)); 4024 return FINISH_HANDLED; 4025 } 4026 } 4027 4028 // Give the focused view a last chance to handle the dpad key. 4029 if (mView.dispatchUnhandledMove(focused, direction)) { 4030 return FINISH_HANDLED; 4031 } 4032 } else { 4033 // find the best view to give focus to in this non-touch-mode with no-focus 4034 View v = focusSearch(null, direction); 4035 if (v != null && v.requestFocus(direction)) { 4036 return FINISH_HANDLED; 4037 } 4038 } 4039 } 4040 } 4041 return FORWARD; 4042 } 4043 4044 private int processPointerEvent(QueuedInputEvent q) { 4045 final MotionEvent event = (MotionEvent)q.mEvent; 4046 4047 mAttachInfo.mUnbufferedDispatchRequested = false; 4048 boolean handled = mView.dispatchPointerEvent(event); 4049 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4050 mUnbufferedInputDispatch = true; 4051 if (mConsumeBatchedInputScheduled) { 4052 scheduleConsumeBatchedInputImmediately(); 4053 } 4054 } 4055 return handled ? FINISH_HANDLED : FORWARD; 4056 } 4057 4058 private int processTrackballEvent(QueuedInputEvent q) { 4059 final MotionEvent event = (MotionEvent)q.mEvent; 4060 4061 if (mView.dispatchTrackballEvent(event)) { 4062 return FINISH_HANDLED; 4063 } 4064 return FORWARD; 4065 } 4066 4067 private int processGenericMotionEvent(QueuedInputEvent q) { 4068 final MotionEvent event = (MotionEvent)q.mEvent; 4069 4070 // Deliver the event to the view. 4071 if (mView.dispatchGenericMotionEvent(event)) { 4072 return FINISH_HANDLED; 4073 } 4074 return FORWARD; 4075 } 4076 } 4077 4078 /** 4079 * Performs synthesis of new input events from unhandled input events. 4080 */ 4081 final class SyntheticInputStage extends InputStage { 4082 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4083 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4084 private final SyntheticTouchNavigationHandler mTouchNavigation = 4085 new SyntheticTouchNavigationHandler(); 4086 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4087 4088 public SyntheticInputStage() { 4089 super(null); 4090 } 4091 4092 @Override 4093 protected int onProcess(QueuedInputEvent q) { 4094 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4095 if (q.mEvent instanceof MotionEvent) { 4096 final MotionEvent event = (MotionEvent)q.mEvent; 4097 final int source = event.getSource(); 4098 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4099 mTrackball.process(event); 4100 return FINISH_HANDLED; 4101 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4102 mJoystick.process(event); 4103 return FINISH_HANDLED; 4104 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4105 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4106 mTouchNavigation.process(event); 4107 return FINISH_HANDLED; 4108 } 4109 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4110 mKeyboard.process((KeyEvent)q.mEvent); 4111 return FINISH_HANDLED; 4112 } 4113 4114 return FORWARD; 4115 } 4116 4117 @Override 4118 protected void onDeliverToNext(QueuedInputEvent q) { 4119 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4120 // Cancel related synthetic events if any prior stage has handled the event. 4121 if (q.mEvent instanceof MotionEvent) { 4122 final MotionEvent event = (MotionEvent)q.mEvent; 4123 final int source = event.getSource(); 4124 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4125 mTrackball.cancel(event); 4126 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4127 mJoystick.cancel(event); 4128 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4129 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4130 mTouchNavigation.cancel(event); 4131 } 4132 } 4133 } 4134 super.onDeliverToNext(q); 4135 } 4136 } 4137 4138 /** 4139 * Creates dpad events from unhandled trackball movements. 4140 */ 4141 final class SyntheticTrackballHandler { 4142 private final TrackballAxis mX = new TrackballAxis(); 4143 private final TrackballAxis mY = new TrackballAxis(); 4144 private long mLastTime; 4145 4146 public void process(MotionEvent event) { 4147 // Translate the trackball event into DPAD keys and try to deliver those. 4148 long curTime = SystemClock.uptimeMillis(); 4149 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4150 // It has been too long since the last movement, 4151 // so restart at the beginning. 4152 mX.reset(0); 4153 mY.reset(0); 4154 mLastTime = curTime; 4155 } 4156 4157 final int action = event.getAction(); 4158 final int metaState = event.getMetaState(); 4159 switch (action) { 4160 case MotionEvent.ACTION_DOWN: 4161 mX.reset(2); 4162 mY.reset(2); 4163 enqueueInputEvent(new KeyEvent(curTime, curTime, 4164 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4165 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4166 InputDevice.SOURCE_KEYBOARD)); 4167 break; 4168 case MotionEvent.ACTION_UP: 4169 mX.reset(2); 4170 mY.reset(2); 4171 enqueueInputEvent(new KeyEvent(curTime, curTime, 4172 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4173 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4174 InputDevice.SOURCE_KEYBOARD)); 4175 break; 4176 } 4177 4178 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4179 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4180 + " move=" + event.getX() 4181 + " / Y=" + mY.position + " step=" 4182 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4183 + " move=" + event.getY()); 4184 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4185 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4186 4187 // Generate DPAD events based on the trackball movement. 4188 // We pick the axis that has moved the most as the direction of 4189 // the DPAD. When we generate DPAD events for one axis, then the 4190 // other axis is reset -- we don't want to perform DPAD jumps due 4191 // to slight movements in the trackball when making major movements 4192 // along the other axis. 4193 int keycode = 0; 4194 int movement = 0; 4195 float accel = 1; 4196 if (xOff > yOff) { 4197 movement = mX.generate(); 4198 if (movement != 0) { 4199 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4200 : KeyEvent.KEYCODE_DPAD_LEFT; 4201 accel = mX.acceleration; 4202 mY.reset(2); 4203 } 4204 } else if (yOff > 0) { 4205 movement = mY.generate(); 4206 if (movement != 0) { 4207 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4208 : KeyEvent.KEYCODE_DPAD_UP; 4209 accel = mY.acceleration; 4210 mX.reset(2); 4211 } 4212 } 4213 4214 if (keycode != 0) { 4215 if (movement < 0) movement = -movement; 4216 int accelMovement = (int)(movement * accel); 4217 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4218 + " accelMovement=" + accelMovement 4219 + " accel=" + accel); 4220 if (accelMovement > movement) { 4221 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4222 + keycode); 4223 movement--; 4224 int repeatCount = accelMovement - movement; 4225 enqueueInputEvent(new KeyEvent(curTime, curTime, 4226 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4227 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4228 InputDevice.SOURCE_KEYBOARD)); 4229 } 4230 while (movement > 0) { 4231 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4232 + keycode); 4233 movement--; 4234 curTime = SystemClock.uptimeMillis(); 4235 enqueueInputEvent(new KeyEvent(curTime, curTime, 4236 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4237 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4238 InputDevice.SOURCE_KEYBOARD)); 4239 enqueueInputEvent(new KeyEvent(curTime, curTime, 4240 KeyEvent.ACTION_UP, keycode, 0, metaState, 4241 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4242 InputDevice.SOURCE_KEYBOARD)); 4243 } 4244 mLastTime = curTime; 4245 } 4246 } 4247 4248 public void cancel(MotionEvent event) { 4249 mLastTime = Integer.MIN_VALUE; 4250 4251 // If we reach this, we consumed a trackball event. 4252 // Because we will not translate the trackball event into a key event, 4253 // touch mode will not exit, so we exit touch mode here. 4254 if (mView != null && mAdded) { 4255 ensureTouchMode(false); 4256 } 4257 } 4258 } 4259 4260 /** 4261 * Maintains state information for a single trackball axis, generating 4262 * discrete (DPAD) movements based on raw trackball motion. 4263 */ 4264 static final class TrackballAxis { 4265 /** 4266 * The maximum amount of acceleration we will apply. 4267 */ 4268 static final float MAX_ACCELERATION = 20; 4269 4270 /** 4271 * The maximum amount of time (in milliseconds) between events in order 4272 * for us to consider the user to be doing fast trackball movements, 4273 * and thus apply an acceleration. 4274 */ 4275 static final long FAST_MOVE_TIME = 150; 4276 4277 /** 4278 * Scaling factor to the time (in milliseconds) between events to how 4279 * much to multiple/divide the current acceleration. When movement 4280 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4281 * FAST_MOVE_TIME it divides it. 4282 */ 4283 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4284 4285 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4286 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4287 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4288 4289 float position; 4290 float acceleration = 1; 4291 long lastMoveTime = 0; 4292 int step; 4293 int dir; 4294 int nonAccelMovement; 4295 4296 void reset(int _step) { 4297 position = 0; 4298 acceleration = 1; 4299 lastMoveTime = 0; 4300 step = _step; 4301 dir = 0; 4302 } 4303 4304 /** 4305 * Add trackball movement into the state. If the direction of movement 4306 * has been reversed, the state is reset before adding the 4307 * movement (so that you don't have to compensate for any previously 4308 * collected movement before see the result of the movement in the 4309 * new direction). 4310 * 4311 * @return Returns the absolute value of the amount of movement 4312 * collected so far. 4313 */ 4314 float collect(float off, long time, String axis) { 4315 long normTime; 4316 if (off > 0) { 4317 normTime = (long)(off * FAST_MOVE_TIME); 4318 if (dir < 0) { 4319 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4320 position = 0; 4321 step = 0; 4322 acceleration = 1; 4323 lastMoveTime = 0; 4324 } 4325 dir = 1; 4326 } else if (off < 0) { 4327 normTime = (long)((-off) * FAST_MOVE_TIME); 4328 if (dir > 0) { 4329 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4330 position = 0; 4331 step = 0; 4332 acceleration = 1; 4333 lastMoveTime = 0; 4334 } 4335 dir = -1; 4336 } else { 4337 normTime = 0; 4338 } 4339 4340 // The number of milliseconds between each movement that is 4341 // considered "normal" and will not result in any acceleration 4342 // or deceleration, scaled by the offset we have here. 4343 if (normTime > 0) { 4344 long delta = time - lastMoveTime; 4345 lastMoveTime = time; 4346 float acc = acceleration; 4347 if (delta < normTime) { 4348 // The user is scrolling rapidly, so increase acceleration. 4349 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4350 if (scale > 1) acc *= scale; 4351 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4352 + off + " normTime=" + normTime + " delta=" + delta 4353 + " scale=" + scale + " acc=" + acc); 4354 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4355 } else { 4356 // The user is scrolling slowly, so decrease acceleration. 4357 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4358 if (scale > 1) acc /= scale; 4359 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4360 + off + " normTime=" + normTime + " delta=" + delta 4361 + " scale=" + scale + " acc=" + acc); 4362 acceleration = acc > 1 ? acc : 1; 4363 } 4364 } 4365 position += off; 4366 return Math.abs(position); 4367 } 4368 4369 /** 4370 * Generate the number of discrete movement events appropriate for 4371 * the currently collected trackball movement. 4372 * 4373 * @return Returns the number of discrete movements, either positive 4374 * or negative, or 0 if there is not enough trackball movement yet 4375 * for a discrete movement. 4376 */ 4377 int generate() { 4378 int movement = 0; 4379 nonAccelMovement = 0; 4380 do { 4381 final int dir = position >= 0 ? 1 : -1; 4382 switch (step) { 4383 // If we are going to execute the first step, then we want 4384 // to do this as soon as possible instead of waiting for 4385 // a full movement, in order to make things look responsive. 4386 case 0: 4387 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4388 return movement; 4389 } 4390 movement += dir; 4391 nonAccelMovement += dir; 4392 step = 1; 4393 break; 4394 // If we have generated the first movement, then we need 4395 // to wait for the second complete trackball motion before 4396 // generating the second discrete movement. 4397 case 1: 4398 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4399 return movement; 4400 } 4401 movement += dir; 4402 nonAccelMovement += dir; 4403 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4404 step = 2; 4405 break; 4406 // After the first two, we generate discrete movements 4407 // consistently with the trackball, applying an acceleration 4408 // if the trackball is moving quickly. This is a simple 4409 // acceleration on top of what we already compute based 4410 // on how quickly the wheel is being turned, to apply 4411 // a longer increasing acceleration to continuous movement 4412 // in one direction. 4413 default: 4414 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4415 return movement; 4416 } 4417 movement += dir; 4418 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4419 float acc = acceleration; 4420 acc *= 1.1f; 4421 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4422 break; 4423 } 4424 } while (true); 4425 } 4426 } 4427 4428 /** 4429 * Creates dpad events from unhandled joystick movements. 4430 */ 4431 final class SyntheticJoystickHandler extends Handler { 4432 private final static String TAG = "SyntheticJoystickHandler"; 4433 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4434 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4435 4436 private int mLastXDirection; 4437 private int mLastYDirection; 4438 private int mLastXKeyCode; 4439 private int mLastYKeyCode; 4440 4441 public SyntheticJoystickHandler() { 4442 super(true); 4443 } 4444 4445 @Override 4446 public void handleMessage(Message msg) { 4447 switch (msg.what) { 4448 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4449 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4450 KeyEvent oldEvent = (KeyEvent)msg.obj; 4451 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4452 SystemClock.uptimeMillis(), 4453 oldEvent.getRepeatCount() + 1); 4454 if (mAttachInfo.mHasWindowFocus) { 4455 enqueueInputEvent(e); 4456 Message m = obtainMessage(msg.what, e); 4457 m.setAsynchronous(true); 4458 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4459 } 4460 } break; 4461 } 4462 } 4463 4464 public void process(MotionEvent event) { 4465 switch(event.getActionMasked()) { 4466 case MotionEvent.ACTION_CANCEL: 4467 cancel(event); 4468 break; 4469 case MotionEvent.ACTION_MOVE: 4470 update(event, true); 4471 break; 4472 default: 4473 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4474 } 4475 } 4476 4477 private void cancel(MotionEvent event) { 4478 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4479 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4480 update(event, false); 4481 } 4482 4483 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4484 final long time = event.getEventTime(); 4485 final int metaState = event.getMetaState(); 4486 final int deviceId = event.getDeviceId(); 4487 final int source = event.getSource(); 4488 4489 int xDirection = joystickAxisValueToDirection( 4490 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4491 if (xDirection == 0) { 4492 xDirection = joystickAxisValueToDirection(event.getX()); 4493 } 4494 4495 int yDirection = joystickAxisValueToDirection( 4496 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4497 if (yDirection == 0) { 4498 yDirection = joystickAxisValueToDirection(event.getY()); 4499 } 4500 4501 if (xDirection != mLastXDirection) { 4502 if (mLastXKeyCode != 0) { 4503 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4504 enqueueInputEvent(new KeyEvent(time, time, 4505 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4506 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4507 mLastXKeyCode = 0; 4508 } 4509 4510 mLastXDirection = xDirection; 4511 4512 if (xDirection != 0 && synthesizeNewKeys) { 4513 mLastXKeyCode = xDirection > 0 4514 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4515 final KeyEvent e = new KeyEvent(time, time, 4516 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4517 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4518 enqueueInputEvent(e); 4519 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4520 m.setAsynchronous(true); 4521 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4522 } 4523 } 4524 4525 if (yDirection != mLastYDirection) { 4526 if (mLastYKeyCode != 0) { 4527 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4528 enqueueInputEvent(new KeyEvent(time, time, 4529 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4530 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4531 mLastYKeyCode = 0; 4532 } 4533 4534 mLastYDirection = yDirection; 4535 4536 if (yDirection != 0 && synthesizeNewKeys) { 4537 mLastYKeyCode = yDirection > 0 4538 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4539 final KeyEvent e = new KeyEvent(time, time, 4540 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4541 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4542 enqueueInputEvent(e); 4543 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4544 m.setAsynchronous(true); 4545 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4546 } 4547 } 4548 } 4549 4550 private int joystickAxisValueToDirection(float value) { 4551 if (value >= 0.5f) { 4552 return 1; 4553 } else if (value <= -0.5f) { 4554 return -1; 4555 } else { 4556 return 0; 4557 } 4558 } 4559 } 4560 4561 /** 4562 * Creates dpad events from unhandled touch navigation movements. 4563 */ 4564 final class SyntheticTouchNavigationHandler extends Handler { 4565 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4566 private static final boolean LOCAL_DEBUG = false; 4567 4568 // Assumed nominal width and height in millimeters of a touch navigation pad, 4569 // if no resolution information is available from the input system. 4570 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4571 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4572 4573 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4574 4575 // The nominal distance traveled to move by one unit. 4576 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4577 4578 // Minimum and maximum fling velocity in ticks per second. 4579 // The minimum velocity should be set such that we perform enough ticks per 4580 // second that the fling appears to be fluid. For example, if we set the minimum 4581 // to 2 ticks per second, then there may be up to half a second delay between the next 4582 // to last and last ticks which is noticeably discrete and jerky. This value should 4583 // probably not be set to anything less than about 4. 4584 // If fling accuracy is a problem then consider tuning the tick distance instead. 4585 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4586 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4587 4588 // Fling velocity decay factor applied after each new key is emitted. 4589 // This parameter controls the deceleration and overall duration of the fling. 4590 // The fling stops automatically when its velocity drops below the minimum 4591 // fling velocity defined above. 4592 private static final float FLING_TICK_DECAY = 0.8f; 4593 4594 /* The input device that we are tracking. */ 4595 4596 private int mCurrentDeviceId = -1; 4597 private int mCurrentSource; 4598 private boolean mCurrentDeviceSupported; 4599 4600 /* Configuration for the current input device. */ 4601 4602 // The scaled tick distance. A movement of this amount should generally translate 4603 // into a single dpad event in a given direction. 4604 private float mConfigTickDistance; 4605 4606 // The minimum and maximum scaled fling velocity. 4607 private float mConfigMinFlingVelocity; 4608 private float mConfigMaxFlingVelocity; 4609 4610 /* Tracking state. */ 4611 4612 // The velocity tracker for detecting flings. 4613 private VelocityTracker mVelocityTracker; 4614 4615 // The active pointer id, or -1 if none. 4616 private int mActivePointerId = -1; 4617 4618 // Location where tracking started. 4619 private float mStartX; 4620 private float mStartY; 4621 4622 // Most recently observed position. 4623 private float mLastX; 4624 private float mLastY; 4625 4626 // Accumulated movement delta since the last direction key was sent. 4627 private float mAccumulatedX; 4628 private float mAccumulatedY; 4629 4630 // Set to true if any movement was delivered to the app. 4631 // Implies that tap slop was exceeded. 4632 private boolean mConsumedMovement; 4633 4634 // The most recently sent key down event. 4635 // The keycode remains set until the direction changes or a fling ends 4636 // so that repeated key events may be generated as required. 4637 private long mPendingKeyDownTime; 4638 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4639 private int mPendingKeyRepeatCount; 4640 private int mPendingKeyMetaState; 4641 4642 // The current fling velocity while a fling is in progress. 4643 private boolean mFlinging; 4644 private float mFlingVelocity; 4645 4646 public SyntheticTouchNavigationHandler() { 4647 super(true); 4648 } 4649 4650 public void process(MotionEvent event) { 4651 // Update the current device information. 4652 final long time = event.getEventTime(); 4653 final int deviceId = event.getDeviceId(); 4654 final int source = event.getSource(); 4655 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4656 finishKeys(time); 4657 finishTracking(time); 4658 mCurrentDeviceId = deviceId; 4659 mCurrentSource = source; 4660 mCurrentDeviceSupported = false; 4661 InputDevice device = event.getDevice(); 4662 if (device != null) { 4663 // In order to support an input device, we must know certain 4664 // characteristics about it, such as its size and resolution. 4665 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4666 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4667 if (xRange != null && yRange != null) { 4668 mCurrentDeviceSupported = true; 4669 4670 // Infer the resolution if it not actually known. 4671 float xRes = xRange.getResolution(); 4672 if (xRes <= 0) { 4673 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4674 } 4675 float yRes = yRange.getResolution(); 4676 if (yRes <= 0) { 4677 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4678 } 4679 float nominalRes = (xRes + yRes) * 0.5f; 4680 4681 // Precompute all of the configuration thresholds we will need. 4682 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4683 mConfigMinFlingVelocity = 4684 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4685 mConfigMaxFlingVelocity = 4686 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4687 4688 if (LOCAL_DEBUG) { 4689 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4690 + " (" + Integer.toHexString(mCurrentSource) + "): " 4691 + ", mConfigTickDistance=" + mConfigTickDistance 4692 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4693 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4694 } 4695 } 4696 } 4697 } 4698 if (!mCurrentDeviceSupported) { 4699 return; 4700 } 4701 4702 // Handle the event. 4703 final int action = event.getActionMasked(); 4704 switch (action) { 4705 case MotionEvent.ACTION_DOWN: { 4706 boolean caughtFling = mFlinging; 4707 finishKeys(time); 4708 finishTracking(time); 4709 mActivePointerId = event.getPointerId(0); 4710 mVelocityTracker = VelocityTracker.obtain(); 4711 mVelocityTracker.addMovement(event); 4712 mStartX = event.getX(); 4713 mStartY = event.getY(); 4714 mLastX = mStartX; 4715 mLastY = mStartY; 4716 mAccumulatedX = 0; 4717 mAccumulatedY = 0; 4718 4719 // If we caught a fling, then pretend that the tap slop has already 4720 // been exceeded to suppress taps whose only purpose is to stop the fling. 4721 mConsumedMovement = caughtFling; 4722 break; 4723 } 4724 4725 case MotionEvent.ACTION_MOVE: 4726 case MotionEvent.ACTION_UP: { 4727 if (mActivePointerId < 0) { 4728 break; 4729 } 4730 final int index = event.findPointerIndex(mActivePointerId); 4731 if (index < 0) { 4732 finishKeys(time); 4733 finishTracking(time); 4734 break; 4735 } 4736 4737 mVelocityTracker.addMovement(event); 4738 final float x = event.getX(index); 4739 final float y = event.getY(index); 4740 mAccumulatedX += x - mLastX; 4741 mAccumulatedY += y - mLastY; 4742 mLastX = x; 4743 mLastY = y; 4744 4745 // Consume any accumulated movement so far. 4746 final int metaState = event.getMetaState(); 4747 consumeAccumulatedMovement(time, metaState); 4748 4749 // Detect taps and flings. 4750 if (action == MotionEvent.ACTION_UP) { 4751 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4752 // It might be a fling. 4753 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4754 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4755 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4756 if (!startFling(time, vx, vy)) { 4757 finishKeys(time); 4758 } 4759 } 4760 finishTracking(time); 4761 } 4762 break; 4763 } 4764 4765 case MotionEvent.ACTION_CANCEL: { 4766 finishKeys(time); 4767 finishTracking(time); 4768 break; 4769 } 4770 } 4771 } 4772 4773 public void cancel(MotionEvent event) { 4774 if (mCurrentDeviceId == event.getDeviceId() 4775 && mCurrentSource == event.getSource()) { 4776 final long time = event.getEventTime(); 4777 finishKeys(time); 4778 finishTracking(time); 4779 } 4780 } 4781 4782 private void finishKeys(long time) { 4783 cancelFling(); 4784 sendKeyUp(time); 4785 } 4786 4787 private void finishTracking(long time) { 4788 if (mActivePointerId >= 0) { 4789 mActivePointerId = -1; 4790 mVelocityTracker.recycle(); 4791 mVelocityTracker = null; 4792 } 4793 } 4794 4795 private void consumeAccumulatedMovement(long time, int metaState) { 4796 final float absX = Math.abs(mAccumulatedX); 4797 final float absY = Math.abs(mAccumulatedY); 4798 if (absX >= absY) { 4799 if (absX >= mConfigTickDistance) { 4800 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4801 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4802 mAccumulatedY = 0; 4803 mConsumedMovement = true; 4804 } 4805 } else { 4806 if (absY >= mConfigTickDistance) { 4807 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4808 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4809 mAccumulatedX = 0; 4810 mConsumedMovement = true; 4811 } 4812 } 4813 } 4814 4815 private float consumeAccumulatedMovement(long time, int metaState, 4816 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4817 while (accumulator <= -mConfigTickDistance) { 4818 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4819 accumulator += mConfigTickDistance; 4820 } 4821 while (accumulator >= mConfigTickDistance) { 4822 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4823 accumulator -= mConfigTickDistance; 4824 } 4825 return accumulator; 4826 } 4827 4828 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4829 if (mPendingKeyCode != keyCode) { 4830 sendKeyUp(time); 4831 mPendingKeyDownTime = time; 4832 mPendingKeyCode = keyCode; 4833 mPendingKeyRepeatCount = 0; 4834 } else { 4835 mPendingKeyRepeatCount += 1; 4836 } 4837 mPendingKeyMetaState = metaState; 4838 4839 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4840 // but it doesn't quite make sense when simulating the events in this way. 4841 if (LOCAL_DEBUG) { 4842 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4843 + ", repeatCount=" + mPendingKeyRepeatCount 4844 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4845 } 4846 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4847 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4848 mPendingKeyMetaState, mCurrentDeviceId, 4849 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4850 } 4851 4852 private void sendKeyUp(long time) { 4853 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4854 if (LOCAL_DEBUG) { 4855 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4856 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4857 } 4858 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4859 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4860 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4861 mCurrentSource)); 4862 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4863 } 4864 } 4865 4866 private boolean startFling(long time, float vx, float vy) { 4867 if (LOCAL_DEBUG) { 4868 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4869 + ", min=" + mConfigMinFlingVelocity); 4870 } 4871 4872 // Flings must be oriented in the same direction as the preceding movements. 4873 switch (mPendingKeyCode) { 4874 case KeyEvent.KEYCODE_DPAD_LEFT: 4875 if (-vx >= mConfigMinFlingVelocity 4876 && Math.abs(vy) < mConfigMinFlingVelocity) { 4877 mFlingVelocity = -vx; 4878 break; 4879 } 4880 return false; 4881 4882 case KeyEvent.KEYCODE_DPAD_RIGHT: 4883 if (vx >= mConfigMinFlingVelocity 4884 && Math.abs(vy) < mConfigMinFlingVelocity) { 4885 mFlingVelocity = vx; 4886 break; 4887 } 4888 return false; 4889 4890 case KeyEvent.KEYCODE_DPAD_UP: 4891 if (-vy >= mConfigMinFlingVelocity 4892 && Math.abs(vx) < mConfigMinFlingVelocity) { 4893 mFlingVelocity = -vy; 4894 break; 4895 } 4896 return false; 4897 4898 case KeyEvent.KEYCODE_DPAD_DOWN: 4899 if (vy >= mConfigMinFlingVelocity 4900 && Math.abs(vx) < mConfigMinFlingVelocity) { 4901 mFlingVelocity = vy; 4902 break; 4903 } 4904 return false; 4905 } 4906 4907 // Post the first fling event. 4908 mFlinging = postFling(time); 4909 return mFlinging; 4910 } 4911 4912 private boolean postFling(long time) { 4913 // The idea here is to estimate the time when the pointer would have 4914 // traveled one tick distance unit given the current fling velocity. 4915 // This effect creates continuity of motion. 4916 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4917 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4918 postAtTime(mFlingRunnable, time + delay); 4919 if (LOCAL_DEBUG) { 4920 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4921 + mFlingVelocity + ", delay=" + delay 4922 + ", keyCode=" + mPendingKeyCode); 4923 } 4924 return true; 4925 } 4926 return false; 4927 } 4928 4929 private void cancelFling() { 4930 if (mFlinging) { 4931 removeCallbacks(mFlingRunnable); 4932 mFlinging = false; 4933 } 4934 } 4935 4936 private final Runnable mFlingRunnable = new Runnable() { 4937 @Override 4938 public void run() { 4939 final long time = SystemClock.uptimeMillis(); 4940 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4941 mFlingVelocity *= FLING_TICK_DECAY; 4942 if (!postFling(time)) { 4943 mFlinging = false; 4944 finishKeys(time); 4945 } 4946 } 4947 }; 4948 } 4949 4950 final class SyntheticKeyboardHandler { 4951 public void process(KeyEvent event) { 4952 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 4953 return; 4954 } 4955 4956 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 4957 final int keyCode = event.getKeyCode(); 4958 final int metaState = event.getMetaState(); 4959 4960 // Check for fallback actions specified by the key character map. 4961 KeyCharacterMap.FallbackAction fallbackAction = 4962 kcm.getFallbackAction(keyCode, metaState); 4963 if (fallbackAction != null) { 4964 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 4965 KeyEvent fallbackEvent = KeyEvent.obtain( 4966 event.getDownTime(), event.getEventTime(), 4967 event.getAction(), fallbackAction.keyCode, 4968 event.getRepeatCount(), fallbackAction.metaState, 4969 event.getDeviceId(), event.getScanCode(), 4970 flags, event.getSource(), null); 4971 fallbackAction.recycle(); 4972 enqueueInputEvent(fallbackEvent); 4973 } 4974 } 4975 } 4976 4977 /** 4978 * Returns true if the key is used for keyboard navigation. 4979 * @param keyEvent The key event. 4980 * @return True if the key is used for keyboard navigation. 4981 */ 4982 private static boolean isNavigationKey(KeyEvent keyEvent) { 4983 switch (keyEvent.getKeyCode()) { 4984 case KeyEvent.KEYCODE_DPAD_LEFT: 4985 case KeyEvent.KEYCODE_DPAD_RIGHT: 4986 case KeyEvent.KEYCODE_DPAD_UP: 4987 case KeyEvent.KEYCODE_DPAD_DOWN: 4988 case KeyEvent.KEYCODE_DPAD_CENTER: 4989 case KeyEvent.KEYCODE_PAGE_UP: 4990 case KeyEvent.KEYCODE_PAGE_DOWN: 4991 case KeyEvent.KEYCODE_MOVE_HOME: 4992 case KeyEvent.KEYCODE_MOVE_END: 4993 case KeyEvent.KEYCODE_TAB: 4994 case KeyEvent.KEYCODE_SPACE: 4995 case KeyEvent.KEYCODE_ENTER: 4996 return true; 4997 } 4998 return false; 4999 } 5000 5001 /** 5002 * Returns true if the key is used for typing. 5003 * @param keyEvent The key event. 5004 * @return True if the key is used for typing. 5005 */ 5006 private static boolean isTypingKey(KeyEvent keyEvent) { 5007 return keyEvent.getUnicodeChar() > 0; 5008 } 5009 5010 /** 5011 * See if the key event means we should leave touch mode (and leave touch mode if so). 5012 * @param event The key event. 5013 * @return Whether this key event should be consumed (meaning the act of 5014 * leaving touch mode alone is considered the event). 5015 */ 5016 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5017 // Only relevant in touch mode. 5018 if (!mAttachInfo.mInTouchMode) { 5019 return false; 5020 } 5021 5022 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5023 final int action = event.getAction(); 5024 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5025 return false; 5026 } 5027 5028 // Don't leave touch mode if the IME told us not to. 5029 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5030 return false; 5031 } 5032 5033 // If the key can be used for keyboard navigation then leave touch mode 5034 // and select a focused view if needed (in ensureTouchMode). 5035 // When a new focused view is selected, we consume the navigation key because 5036 // navigation doesn't make much sense unless a view already has focus so 5037 // the key's purpose is to set focus. 5038 if (isNavigationKey(event)) { 5039 return ensureTouchMode(false); 5040 } 5041 5042 // If the key can be used for typing then leave touch mode 5043 // and select a focused view if needed (in ensureTouchMode). 5044 // Always allow the view to process the typing key. 5045 if (isTypingKey(event)) { 5046 ensureTouchMode(false); 5047 return false; 5048 } 5049 5050 return false; 5051 } 5052 5053 /* drag/drop */ 5054 void setLocalDragState(Object obj) { 5055 mLocalDragState = obj; 5056 } 5057 5058 private void handleDragEvent(DragEvent event) { 5059 // From the root, only drag start/end/location are dispatched. entered/exited 5060 // are determined and dispatched by the viewgroup hierarchy, who then report 5061 // that back here for ultimate reporting back to the framework. 5062 if (mView != null && mAdded) { 5063 final int what = event.mAction; 5064 5065 if (what == DragEvent.ACTION_DRAG_EXITED) { 5066 // A direct EXITED event means that the window manager knows we've just crossed 5067 // a window boundary, so the current drag target within this one must have 5068 // just been exited. Send it the usual notifications and then we're done 5069 // for now. 5070 mView.dispatchDragEvent(event); 5071 } else { 5072 // Cache the drag description when the operation starts, then fill it in 5073 // on subsequent calls as a convenience 5074 if (what == DragEvent.ACTION_DRAG_STARTED) { 5075 mCurrentDragView = null; // Start the current-recipient tracking 5076 mDragDescription = event.mClipDescription; 5077 } else { 5078 event.mClipDescription = mDragDescription; 5079 } 5080 5081 // For events with a [screen] location, translate into window coordinates 5082 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5083 mDragPoint.set(event.mX, event.mY); 5084 if (mTranslator != null) { 5085 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5086 } 5087 5088 if (mCurScrollY != 0) { 5089 mDragPoint.offset(0, mCurScrollY); 5090 } 5091 5092 event.mX = mDragPoint.x; 5093 event.mY = mDragPoint.y; 5094 } 5095 5096 // Remember who the current drag target is pre-dispatch 5097 final View prevDragView = mCurrentDragView; 5098 5099 // Now dispatch the drag/drop event 5100 boolean result = mView.dispatchDragEvent(event); 5101 5102 // If we changed apparent drag target, tell the OS about it 5103 if (prevDragView != mCurrentDragView) { 5104 try { 5105 if (prevDragView != null) { 5106 mWindowSession.dragRecipientExited(mWindow); 5107 } 5108 if (mCurrentDragView != null) { 5109 mWindowSession.dragRecipientEntered(mWindow); 5110 } 5111 } catch (RemoteException e) { 5112 Slog.e(TAG, "Unable to note drag target change"); 5113 } 5114 } 5115 5116 // Report the drop result when we're done 5117 if (what == DragEvent.ACTION_DROP) { 5118 mDragDescription = null; 5119 try { 5120 Log.i(TAG, "Reporting drop result: " + result); 5121 mWindowSession.reportDropResult(mWindow, result); 5122 } catch (RemoteException e) { 5123 Log.e(TAG, "Unable to report drop result"); 5124 } 5125 } 5126 5127 // When the drag operation ends, release any local state object 5128 // that may have been in use 5129 if (what == DragEvent.ACTION_DRAG_ENDED) { 5130 setLocalDragState(null); 5131 } 5132 } 5133 } 5134 event.recycle(); 5135 } 5136 5137 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5138 if (mSeq != args.seq) { 5139 // The sequence has changed, so we need to update our value and make 5140 // sure to do a traversal afterward so the window manager is given our 5141 // most recent data. 5142 mSeq = args.seq; 5143 mAttachInfo.mForceReportNewAttributes = true; 5144 scheduleTraversals(); 5145 } 5146 if (mView == null) return; 5147 if (args.localChanges != 0) { 5148 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5149 } 5150 if (mAttachInfo != null) { 5151 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5152 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5153 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5154 mView.dispatchSystemUiVisibilityChanged(visibility); 5155 } 5156 } 5157 } 5158 5159 public void handleDispatchDoneAnimating() { 5160 if (mWindowsAnimating) { 5161 mWindowsAnimating = false; 5162 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5163 scheduleTraversals(); 5164 } 5165 } 5166 } 5167 5168 public void getLastTouchPoint(Point outLocation) { 5169 outLocation.x = (int) mLastTouchPoint.x; 5170 outLocation.y = (int) mLastTouchPoint.y; 5171 } 5172 5173 public void setDragFocus(View newDragTarget) { 5174 if (mCurrentDragView != newDragTarget) { 5175 mCurrentDragView = newDragTarget; 5176 } 5177 } 5178 5179 private AudioManager getAudioManager() { 5180 if (mView == null) { 5181 throw new IllegalStateException("getAudioManager called when there is no mView"); 5182 } 5183 if (mAudioManager == null) { 5184 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5185 } 5186 return mAudioManager; 5187 } 5188 5189 public AccessibilityInteractionController getAccessibilityInteractionController() { 5190 if (mView == null) { 5191 throw new IllegalStateException("getAccessibilityInteractionController" 5192 + " called when there is no mView"); 5193 } 5194 if (mAccessibilityInteractionController == null) { 5195 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5196 } 5197 return mAccessibilityInteractionController; 5198 } 5199 5200 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5201 boolean insetsPending) throws RemoteException { 5202 5203 float appScale = mAttachInfo.mApplicationScale; 5204 boolean restore = false; 5205 if (params != null && mTranslator != null) { 5206 restore = true; 5207 params.backup(); 5208 mTranslator.translateWindowLayout(params); 5209 } 5210 if (params != null) { 5211 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5212 } 5213 mPendingConfiguration.seq = 0; 5214 //Log.d(TAG, ">>>>>> CALLING relayout"); 5215 if (params != null && mOrigWindowType != params.type) { 5216 // For compatibility with old apps, don't crash here. 5217 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5218 Slog.w(TAG, "Window type can not be changed after " 5219 + "the window is added; ignoring change of " + mView); 5220 params.type = mOrigWindowType; 5221 } 5222 } 5223 int relayoutResult = mWindowSession.relayout( 5224 mWindow, mSeq, params, 5225 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5226 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5227 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5228 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5229 mPendingStableInsets, mPendingConfiguration, mSurface); 5230 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5231 if (restore) { 5232 params.restore(); 5233 } 5234 5235 if (mTranslator != null) { 5236 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5237 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5238 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5239 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5240 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5241 } 5242 return relayoutResult; 5243 } 5244 5245 /** 5246 * {@inheritDoc} 5247 */ 5248 @Override 5249 public void playSoundEffect(int effectId) { 5250 checkThread(); 5251 5252 if (mMediaDisabled) { 5253 return; 5254 } 5255 5256 try { 5257 final AudioManager audioManager = getAudioManager(); 5258 5259 switch (effectId) { 5260 case SoundEffectConstants.CLICK: 5261 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5262 return; 5263 case SoundEffectConstants.NAVIGATION_DOWN: 5264 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5265 return; 5266 case SoundEffectConstants.NAVIGATION_LEFT: 5267 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5268 return; 5269 case SoundEffectConstants.NAVIGATION_RIGHT: 5270 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5271 return; 5272 case SoundEffectConstants.NAVIGATION_UP: 5273 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5274 return; 5275 default: 5276 throw new IllegalArgumentException("unknown effect id " + effectId + 5277 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5278 } 5279 } catch (IllegalStateException e) { 5280 // Exception thrown by getAudioManager() when mView is null 5281 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5282 e.printStackTrace(); 5283 } 5284 } 5285 5286 /** 5287 * {@inheritDoc} 5288 */ 5289 @Override 5290 public boolean performHapticFeedback(int effectId, boolean always) { 5291 try { 5292 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5293 } catch (RemoteException e) { 5294 return false; 5295 } 5296 } 5297 5298 /** 5299 * {@inheritDoc} 5300 */ 5301 @Override 5302 public View focusSearch(View focused, int direction) { 5303 checkThread(); 5304 if (!(mView instanceof ViewGroup)) { 5305 return null; 5306 } 5307 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5308 } 5309 5310 public void debug() { 5311 mView.debug(); 5312 } 5313 5314 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5315 String innerPrefix = prefix + " "; 5316 writer.print(prefix); writer.println("ViewRoot:"); 5317 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5318 writer.print(" mRemoved="); writer.println(mRemoved); 5319 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5320 writer.println(mConsumeBatchedInputScheduled); 5321 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5322 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5323 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5324 writer.println(mPendingInputEventCount); 5325 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5326 writer.println(mProcessInputEventsScheduled); 5327 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5328 writer.print(mTraversalScheduled); 5329 if (mTraversalScheduled) { 5330 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5331 } else { 5332 writer.println(); 5333 } 5334 mFirstInputStage.dump(innerPrefix, writer); 5335 5336 mChoreographer.dump(prefix, writer); 5337 5338 writer.print(prefix); writer.println("View Hierarchy:"); 5339 dumpViewHierarchy(innerPrefix, writer, mView); 5340 } 5341 5342 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5343 writer.print(prefix); 5344 if (view == null) { 5345 writer.println("null"); 5346 return; 5347 } 5348 writer.println(view.toString()); 5349 if (!(view instanceof ViewGroup)) { 5350 return; 5351 } 5352 ViewGroup grp = (ViewGroup)view; 5353 final int N = grp.getChildCount(); 5354 if (N <= 0) { 5355 return; 5356 } 5357 prefix = prefix + " "; 5358 for (int i=0; i<N; i++) { 5359 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5360 } 5361 } 5362 5363 public void dumpGfxInfo(int[] info) { 5364 info[0] = info[1] = 0; 5365 if (mView != null) { 5366 getGfxInfo(mView, info); 5367 } 5368 } 5369 5370 private static void getGfxInfo(View view, int[] info) { 5371 RenderNode renderNode = view.mRenderNode; 5372 info[0]++; 5373 if (renderNode != null) { 5374 info[1] += renderNode.getDebugSize(); 5375 } 5376 5377 if (view instanceof ViewGroup) { 5378 ViewGroup group = (ViewGroup) view; 5379 5380 int count = group.getChildCount(); 5381 for (int i = 0; i < count; i++) { 5382 getGfxInfo(group.getChildAt(i), info); 5383 } 5384 } 5385 } 5386 5387 /** 5388 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5389 * @return True, request has been queued. False, request has been completed. 5390 */ 5391 boolean die(boolean immediate) { 5392 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5393 // done by dispatchDetachedFromWindow will cause havoc on return. 5394 if (immediate && !mIsInTraversal) { 5395 doDie(); 5396 return false; 5397 } 5398 5399 if (!mIsDrawing) { 5400 destroyHardwareRenderer(); 5401 } else { 5402 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5403 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5404 } 5405 mHandler.sendEmptyMessage(MSG_DIE); 5406 return true; 5407 } 5408 5409 void doDie() { 5410 checkThread(); 5411 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5412 synchronized (this) { 5413 if (mRemoved) { 5414 return; 5415 } 5416 mRemoved = true; 5417 if (mAdded) { 5418 dispatchDetachedFromWindow(); 5419 } 5420 5421 if (mAdded && !mFirst) { 5422 destroyHardwareRenderer(); 5423 5424 if (mView != null) { 5425 int viewVisibility = mView.getVisibility(); 5426 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5427 if (mWindowAttributesChanged || viewVisibilityChanged) { 5428 // If layout params have been changed, first give them 5429 // to the window manager to make sure it has the correct 5430 // animation info. 5431 try { 5432 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5433 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5434 mWindowSession.finishDrawing(mWindow); 5435 } 5436 } catch (RemoteException e) { 5437 } 5438 } 5439 5440 mSurface.release(); 5441 } 5442 } 5443 5444 mAdded = false; 5445 } 5446 WindowManagerGlobal.getInstance().doRemoveView(this); 5447 } 5448 5449 public void requestUpdateConfiguration(Configuration config) { 5450 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5451 mHandler.sendMessage(msg); 5452 } 5453 5454 public void loadSystemProperties() { 5455 mHandler.post(new Runnable() { 5456 @Override 5457 public void run() { 5458 // Profiling 5459 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5460 profileRendering(mAttachInfo.mHasWindowFocus); 5461 5462 // Media (used by sound effects) 5463 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5464 5465 // Hardware rendering 5466 if (mAttachInfo.mHardwareRenderer != null) { 5467 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5468 invalidate(); 5469 } 5470 } 5471 5472 // Layout debugging 5473 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5474 if (layout != mAttachInfo.mDebugLayout) { 5475 mAttachInfo.mDebugLayout = layout; 5476 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5477 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5478 } 5479 } 5480 5481 // detect emulator 5482 mIsEmulator = Build.HARDWARE.contains("goldfish"); 5483 } 5484 }); 5485 } 5486 5487 private void destroyHardwareRenderer() { 5488 AttachInfo attachInfo = mAttachInfo; 5489 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5490 5491 if (hardwareRenderer != null) { 5492 if (mView != null) { 5493 hardwareRenderer.destroyHardwareResources(mView); 5494 } 5495 hardwareRenderer.destroy(); 5496 hardwareRenderer.setRequested(false); 5497 5498 attachInfo.mHardwareRenderer = null; 5499 attachInfo.mHardwareAccelerated = false; 5500 } 5501 } 5502 5503 public void dispatchFinishInputConnection(InputConnection connection) { 5504 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5505 mHandler.sendMessage(msg); 5506 } 5507 5508 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5509 Rect visibleInsets, Rect stableInsets, boolean reportDraw, Configuration newConfig) { 5510 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5511 + " contentInsets=" + contentInsets.toShortString() 5512 + " visibleInsets=" + visibleInsets.toShortString() 5513 + " reportDraw=" + reportDraw); 5514 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5515 if (mTranslator != null) { 5516 mTranslator.translateRectInScreenToAppWindow(frame); 5517 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5518 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5519 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5520 } 5521 SomeArgs args = SomeArgs.obtain(); 5522 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5523 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5524 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5525 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5526 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5527 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5528 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5529 msg.obj = args; 5530 mHandler.sendMessage(msg); 5531 } 5532 5533 public void dispatchMoved(int newX, int newY) { 5534 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5535 if (mTranslator != null) { 5536 PointF point = new PointF(newX, newY); 5537 mTranslator.translatePointInScreenToAppWindow(point); 5538 newX = (int) (point.x + 0.5); 5539 newY = (int) (point.y + 0.5); 5540 } 5541 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5542 mHandler.sendMessage(msg); 5543 } 5544 5545 /** 5546 * Represents a pending input event that is waiting in a queue. 5547 * 5548 * Input events are processed in serial order by the timestamp specified by 5549 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5550 * one input event to the application at a time and waits for the application 5551 * to finish handling it before delivering the next one. 5552 * 5553 * However, because the application or IME can synthesize and inject multiple 5554 * key events at a time without going through the input dispatcher, we end up 5555 * needing a queue on the application's side. 5556 */ 5557 private static final class QueuedInputEvent { 5558 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5559 public static final int FLAG_DEFERRED = 1 << 1; 5560 public static final int FLAG_FINISHED = 1 << 2; 5561 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5562 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5563 public static final int FLAG_UNHANDLED = 1 << 5; 5564 5565 public QueuedInputEvent mNext; 5566 5567 public InputEvent mEvent; 5568 public InputEventReceiver mReceiver; 5569 public int mFlags; 5570 5571 public boolean shouldSkipIme() { 5572 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5573 return true; 5574 } 5575 return mEvent instanceof MotionEvent 5576 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5577 } 5578 5579 public boolean shouldSendToSynthesizer() { 5580 if ((mFlags & FLAG_UNHANDLED) != 0) { 5581 return true; 5582 } 5583 5584 return false; 5585 } 5586 5587 @Override 5588 public String toString() { 5589 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5590 boolean hasPrevious = false; 5591 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5592 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5593 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5594 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5595 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5596 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5597 if (!hasPrevious) { 5598 sb.append("0"); 5599 } 5600 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5601 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5602 sb.append(", mEvent=" + mEvent + "}"); 5603 return sb.toString(); 5604 } 5605 5606 private boolean flagToString(String name, int flag, 5607 boolean hasPrevious, StringBuilder sb) { 5608 if ((mFlags & flag) != 0) { 5609 if (hasPrevious) { 5610 sb.append("|"); 5611 } 5612 sb.append(name); 5613 return true; 5614 } 5615 return hasPrevious; 5616 } 5617 } 5618 5619 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5620 InputEventReceiver receiver, int flags) { 5621 QueuedInputEvent q = mQueuedInputEventPool; 5622 if (q != null) { 5623 mQueuedInputEventPoolSize -= 1; 5624 mQueuedInputEventPool = q.mNext; 5625 q.mNext = null; 5626 } else { 5627 q = new QueuedInputEvent(); 5628 } 5629 5630 q.mEvent = event; 5631 q.mReceiver = receiver; 5632 q.mFlags = flags; 5633 return q; 5634 } 5635 5636 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5637 q.mEvent = null; 5638 q.mReceiver = null; 5639 5640 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5641 mQueuedInputEventPoolSize += 1; 5642 q.mNext = mQueuedInputEventPool; 5643 mQueuedInputEventPool = q; 5644 } 5645 } 5646 5647 void enqueueInputEvent(InputEvent event) { 5648 enqueueInputEvent(event, null, 0, false); 5649 } 5650 5651 void enqueueInputEvent(InputEvent event, 5652 InputEventReceiver receiver, int flags, boolean processImmediately) { 5653 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5654 5655 // Always enqueue the input event in order, regardless of its time stamp. 5656 // We do this because the application or the IME may inject key events 5657 // in response to touch events and we want to ensure that the injected keys 5658 // are processed in the order they were received and we cannot trust that 5659 // the time stamp of injected events are monotonic. 5660 QueuedInputEvent last = mPendingInputEventTail; 5661 if (last == null) { 5662 mPendingInputEventHead = q; 5663 mPendingInputEventTail = q; 5664 } else { 5665 last.mNext = q; 5666 mPendingInputEventTail = q; 5667 } 5668 mPendingInputEventCount += 1; 5669 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5670 mPendingInputEventCount); 5671 5672 if (processImmediately) { 5673 doProcessInputEvents(); 5674 } else { 5675 scheduleProcessInputEvents(); 5676 } 5677 } 5678 5679 private void scheduleProcessInputEvents() { 5680 if (!mProcessInputEventsScheduled) { 5681 mProcessInputEventsScheduled = true; 5682 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5683 msg.setAsynchronous(true); 5684 mHandler.sendMessage(msg); 5685 } 5686 } 5687 5688 void doProcessInputEvents() { 5689 // Deliver all pending input events in the queue. 5690 while (mPendingInputEventHead != null) { 5691 QueuedInputEvent q = mPendingInputEventHead; 5692 mPendingInputEventHead = q.mNext; 5693 if (mPendingInputEventHead == null) { 5694 mPendingInputEventTail = null; 5695 } 5696 q.mNext = null; 5697 5698 mPendingInputEventCount -= 1; 5699 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5700 mPendingInputEventCount); 5701 5702 deliverInputEvent(q); 5703 } 5704 5705 // We are done processing all input events that we can process right now 5706 // so we can clear the pending flag immediately. 5707 if (mProcessInputEventsScheduled) { 5708 mProcessInputEventsScheduled = false; 5709 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5710 } 5711 } 5712 5713 private void deliverInputEvent(QueuedInputEvent q) { 5714 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5715 q.mEvent.getSequenceNumber()); 5716 if (mInputEventConsistencyVerifier != null) { 5717 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5718 } 5719 5720 InputStage stage; 5721 if (q.shouldSendToSynthesizer()) { 5722 stage = mSyntheticInputStage; 5723 } else { 5724 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5725 } 5726 5727 if (stage != null) { 5728 stage.deliver(q); 5729 } else { 5730 finishInputEvent(q); 5731 } 5732 } 5733 5734 private void finishInputEvent(QueuedInputEvent q) { 5735 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5736 q.mEvent.getSequenceNumber()); 5737 5738 if (q.mReceiver != null) { 5739 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5740 q.mReceiver.finishInputEvent(q.mEvent, handled); 5741 } else { 5742 q.mEvent.recycleIfNeededAfterDispatch(); 5743 } 5744 5745 recycleQueuedInputEvent(q); 5746 } 5747 5748 static boolean isTerminalInputEvent(InputEvent event) { 5749 if (event instanceof KeyEvent) { 5750 final KeyEvent keyEvent = (KeyEvent)event; 5751 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5752 } else { 5753 final MotionEvent motionEvent = (MotionEvent)event; 5754 final int action = motionEvent.getAction(); 5755 return action == MotionEvent.ACTION_UP 5756 || action == MotionEvent.ACTION_CANCEL 5757 || action == MotionEvent.ACTION_HOVER_EXIT; 5758 } 5759 } 5760 5761 void scheduleConsumeBatchedInput() { 5762 if (!mConsumeBatchedInputScheduled) { 5763 mConsumeBatchedInputScheduled = true; 5764 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5765 mConsumedBatchedInputRunnable, null); 5766 } 5767 } 5768 5769 void unscheduleConsumeBatchedInput() { 5770 if (mConsumeBatchedInputScheduled) { 5771 mConsumeBatchedInputScheduled = false; 5772 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5773 mConsumedBatchedInputRunnable, null); 5774 } 5775 } 5776 5777 void scheduleConsumeBatchedInputImmediately() { 5778 if (!mConsumeBatchedInputImmediatelyScheduled) { 5779 unscheduleConsumeBatchedInput(); 5780 mConsumeBatchedInputImmediatelyScheduled = true; 5781 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 5782 } 5783 } 5784 5785 void doConsumeBatchedInput(long frameTimeNanos) { 5786 if (mConsumeBatchedInputScheduled) { 5787 mConsumeBatchedInputScheduled = false; 5788 if (mInputEventReceiver != null) { 5789 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 5790 && frameTimeNanos != -1) { 5791 // If we consumed a batch here, we want to go ahead and schedule the 5792 // consumption of batched input events on the next frame. Otherwise, we would 5793 // wait until we have more input events pending and might get starved by other 5794 // things occurring in the process. If the frame time is -1, however, then 5795 // we're in a non-batching mode, so there's no need to schedule this. 5796 scheduleConsumeBatchedInput(); 5797 } 5798 } 5799 doProcessInputEvents(); 5800 } 5801 } 5802 5803 final class TraversalRunnable implements Runnable { 5804 @Override 5805 public void run() { 5806 doTraversal(); 5807 } 5808 } 5809 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5810 5811 final class WindowInputEventReceiver extends InputEventReceiver { 5812 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5813 super(inputChannel, looper); 5814 } 5815 5816 @Override 5817 public void onInputEvent(InputEvent event) { 5818 enqueueInputEvent(event, this, 0, true); 5819 } 5820 5821 @Override 5822 public void onBatchedInputEventPending() { 5823 if (mUnbufferedInputDispatch) { 5824 super.onBatchedInputEventPending(); 5825 } else { 5826 scheduleConsumeBatchedInput(); 5827 } 5828 } 5829 5830 @Override 5831 public void dispose() { 5832 unscheduleConsumeBatchedInput(); 5833 super.dispose(); 5834 } 5835 } 5836 WindowInputEventReceiver mInputEventReceiver; 5837 5838 final class ConsumeBatchedInputRunnable implements Runnable { 5839 @Override 5840 public void run() { 5841 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5842 } 5843 } 5844 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5845 new ConsumeBatchedInputRunnable(); 5846 boolean mConsumeBatchedInputScheduled; 5847 5848 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 5849 @Override 5850 public void run() { 5851 doConsumeBatchedInput(-1); 5852 } 5853 } 5854 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 5855 new ConsumeBatchedInputImmediatelyRunnable(); 5856 boolean mConsumeBatchedInputImmediatelyScheduled; 5857 5858 final class InvalidateOnAnimationRunnable implements Runnable { 5859 private boolean mPosted; 5860 private final ArrayList<View> mViews = new ArrayList<View>(); 5861 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5862 new ArrayList<AttachInfo.InvalidateInfo>(); 5863 private View[] mTempViews; 5864 private AttachInfo.InvalidateInfo[] mTempViewRects; 5865 5866 public void addView(View view) { 5867 synchronized (this) { 5868 mViews.add(view); 5869 postIfNeededLocked(); 5870 } 5871 } 5872 5873 public void addViewRect(AttachInfo.InvalidateInfo info) { 5874 synchronized (this) { 5875 mViewRects.add(info); 5876 postIfNeededLocked(); 5877 } 5878 } 5879 5880 public void removeView(View view) { 5881 synchronized (this) { 5882 mViews.remove(view); 5883 5884 for (int i = mViewRects.size(); i-- > 0; ) { 5885 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5886 if (info.target == view) { 5887 mViewRects.remove(i); 5888 info.recycle(); 5889 } 5890 } 5891 5892 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5893 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5894 mPosted = false; 5895 } 5896 } 5897 } 5898 5899 @Override 5900 public void run() { 5901 final int viewCount; 5902 final int viewRectCount; 5903 synchronized (this) { 5904 mPosted = false; 5905 5906 viewCount = mViews.size(); 5907 if (viewCount != 0) { 5908 mTempViews = mViews.toArray(mTempViews != null 5909 ? mTempViews : new View[viewCount]); 5910 mViews.clear(); 5911 } 5912 5913 viewRectCount = mViewRects.size(); 5914 if (viewRectCount != 0) { 5915 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5916 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5917 mViewRects.clear(); 5918 } 5919 } 5920 5921 for (int i = 0; i < viewCount; i++) { 5922 mTempViews[i].invalidate(); 5923 mTempViews[i] = null; 5924 } 5925 5926 for (int i = 0; i < viewRectCount; i++) { 5927 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5928 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5929 info.recycle(); 5930 } 5931 } 5932 5933 private void postIfNeededLocked() { 5934 if (!mPosted) { 5935 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5936 mPosted = true; 5937 } 5938 } 5939 } 5940 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5941 new InvalidateOnAnimationRunnable(); 5942 5943 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5944 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5945 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5946 } 5947 5948 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5949 long delayMilliseconds) { 5950 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5951 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5952 } 5953 5954 public void dispatchInvalidateOnAnimation(View view) { 5955 mInvalidateOnAnimationRunnable.addView(view); 5956 } 5957 5958 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5959 mInvalidateOnAnimationRunnable.addViewRect(info); 5960 } 5961 5962 public void cancelInvalidate(View view) { 5963 mHandler.removeMessages(MSG_INVALIDATE, view); 5964 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5965 // them to the pool 5966 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5967 mInvalidateOnAnimationRunnable.removeView(view); 5968 } 5969 5970 public void dispatchInputEvent(InputEvent event) { 5971 dispatchInputEvent(event, null); 5972 } 5973 5974 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 5975 SomeArgs args = SomeArgs.obtain(); 5976 args.arg1 = event; 5977 args.arg2 = receiver; 5978 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 5979 msg.setAsynchronous(true); 5980 mHandler.sendMessage(msg); 5981 } 5982 5983 public void synthesizeInputEvent(InputEvent event) { 5984 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 5985 msg.setAsynchronous(true); 5986 mHandler.sendMessage(msg); 5987 } 5988 5989 public void dispatchKeyFromIme(KeyEvent event) { 5990 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5991 msg.setAsynchronous(true); 5992 mHandler.sendMessage(msg); 5993 } 5994 5995 /** 5996 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 5997 * 5998 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 5999 * passes in. 6000 */ 6001 public void dispatchUnhandledInputEvent(InputEvent event) { 6002 if (event instanceof MotionEvent) { 6003 event = MotionEvent.obtain((MotionEvent) event); 6004 } 6005 synthesizeInputEvent(event); 6006 } 6007 6008 public void dispatchAppVisibility(boolean visible) { 6009 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6010 msg.arg1 = visible ? 1 : 0; 6011 mHandler.sendMessage(msg); 6012 } 6013 6014 public void dispatchGetNewSurface() { 6015 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6016 mHandler.sendMessage(msg); 6017 } 6018 6019 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6020 Message msg = Message.obtain(); 6021 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6022 msg.arg1 = hasFocus ? 1 : 0; 6023 msg.arg2 = inTouchMode ? 1 : 0; 6024 mHandler.sendMessage(msg); 6025 } 6026 6027 public void dispatchCloseSystemDialogs(String reason) { 6028 Message msg = Message.obtain(); 6029 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6030 msg.obj = reason; 6031 mHandler.sendMessage(msg); 6032 } 6033 6034 public void dispatchDragEvent(DragEvent event) { 6035 final int what; 6036 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6037 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6038 mHandler.removeMessages(what); 6039 } else { 6040 what = MSG_DISPATCH_DRAG_EVENT; 6041 } 6042 Message msg = mHandler.obtainMessage(what, event); 6043 mHandler.sendMessage(msg); 6044 } 6045 6046 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6047 int localValue, int localChanges) { 6048 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6049 args.seq = seq; 6050 args.globalVisibility = globalVisibility; 6051 args.localValue = localValue; 6052 args.localChanges = localChanges; 6053 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6054 } 6055 6056 public void dispatchDoneAnimating() { 6057 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 6058 } 6059 6060 public void dispatchCheckFocus() { 6061 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6062 // This will result in a call to checkFocus() below. 6063 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6064 } 6065 } 6066 6067 /** 6068 * Post a callback to send a 6069 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6070 * This event is send at most once every 6071 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6072 */ 6073 private void postSendWindowContentChangedCallback(View source, int changeType) { 6074 if (mSendWindowContentChangedAccessibilityEvent == null) { 6075 mSendWindowContentChangedAccessibilityEvent = 6076 new SendWindowContentChangedAccessibilityEvent(); 6077 } 6078 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6079 } 6080 6081 /** 6082 * Remove a posted callback to send a 6083 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6084 */ 6085 private void removeSendWindowContentChangedCallback() { 6086 if (mSendWindowContentChangedAccessibilityEvent != null) { 6087 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6088 } 6089 } 6090 6091 @Override 6092 public boolean showContextMenuForChild(View originalView) { 6093 return false; 6094 } 6095 6096 @Override 6097 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6098 return null; 6099 } 6100 6101 @Override 6102 public void createContextMenu(ContextMenu menu) { 6103 } 6104 6105 @Override 6106 public void childDrawableStateChanged(View child) { 6107 } 6108 6109 @Override 6110 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6111 if (mView == null) { 6112 return false; 6113 } 6114 // Intercept accessibility focus events fired by virtual nodes to keep 6115 // track of accessibility focus position in such nodes. 6116 final int eventType = event.getEventType(); 6117 switch (eventType) { 6118 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6119 final long sourceNodeId = event.getSourceNodeId(); 6120 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6121 sourceNodeId); 6122 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6123 if (source != null) { 6124 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6125 if (provider != null) { 6126 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 6127 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 6128 setAccessibilityFocus(source, node); 6129 } 6130 } 6131 } break; 6132 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6133 final long sourceNodeId = event.getSourceNodeId(); 6134 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6135 sourceNodeId); 6136 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6137 if (source != null) { 6138 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6139 if (provider != null) { 6140 setAccessibilityFocus(null, null); 6141 } 6142 } 6143 } break; 6144 } 6145 mAccessibilityManager.sendAccessibilityEvent(event); 6146 return true; 6147 } 6148 6149 @Override 6150 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6151 postSendWindowContentChangedCallback(source, changeType); 6152 } 6153 6154 @Override 6155 public boolean canResolveLayoutDirection() { 6156 return true; 6157 } 6158 6159 @Override 6160 public boolean isLayoutDirectionResolved() { 6161 return true; 6162 } 6163 6164 @Override 6165 public int getLayoutDirection() { 6166 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6167 } 6168 6169 @Override 6170 public boolean canResolveTextDirection() { 6171 return true; 6172 } 6173 6174 @Override 6175 public boolean isTextDirectionResolved() { 6176 return true; 6177 } 6178 6179 @Override 6180 public int getTextDirection() { 6181 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6182 } 6183 6184 @Override 6185 public boolean canResolveTextAlignment() { 6186 return true; 6187 } 6188 6189 @Override 6190 public boolean isTextAlignmentResolved() { 6191 return true; 6192 } 6193 6194 @Override 6195 public int getTextAlignment() { 6196 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6197 } 6198 6199 private View getCommonPredecessor(View first, View second) { 6200 if (mAttachInfo != null) { 6201 if (mTempHashSet == null) { 6202 mTempHashSet = new HashSet<View>(); 6203 } 6204 HashSet<View> seen = mTempHashSet; 6205 seen.clear(); 6206 View firstCurrent = first; 6207 while (firstCurrent != null) { 6208 seen.add(firstCurrent); 6209 ViewParent firstCurrentParent = firstCurrent.mParent; 6210 if (firstCurrentParent instanceof View) { 6211 firstCurrent = (View) firstCurrentParent; 6212 } else { 6213 firstCurrent = null; 6214 } 6215 } 6216 View secondCurrent = second; 6217 while (secondCurrent != null) { 6218 if (seen.contains(secondCurrent)) { 6219 seen.clear(); 6220 return secondCurrent; 6221 } 6222 ViewParent secondCurrentParent = secondCurrent.mParent; 6223 if (secondCurrentParent instanceof View) { 6224 secondCurrent = (View) secondCurrentParent; 6225 } else { 6226 secondCurrent = null; 6227 } 6228 } 6229 seen.clear(); 6230 } 6231 return null; 6232 } 6233 6234 void checkThread() { 6235 if (mThread != Thread.currentThread()) { 6236 throw new CalledFromWrongThreadException( 6237 "Only the original thread that created a view hierarchy can touch its views."); 6238 } 6239 } 6240 6241 @Override 6242 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6243 // ViewAncestor never intercepts touch event, so this can be a no-op 6244 } 6245 6246 @Override 6247 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6248 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6249 if (rectangle != null) { 6250 mTempRect.set(rectangle); 6251 mTempRect.offset(0, -mCurScrollY); 6252 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6253 try { 6254 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6255 } catch (RemoteException re) { 6256 /* ignore */ 6257 } 6258 } 6259 return scrolled; 6260 } 6261 6262 @Override 6263 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6264 // Do nothing. 6265 } 6266 6267 @Override 6268 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6269 return false; 6270 } 6271 6272 @Override 6273 public void onStopNestedScroll(View target) { 6274 } 6275 6276 @Override 6277 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6278 } 6279 6280 @Override 6281 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6282 int dxUnconsumed, int dyUnconsumed) { 6283 } 6284 6285 @Override 6286 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6287 } 6288 6289 @Override 6290 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6291 return false; 6292 } 6293 6294 @Override 6295 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6296 return false; 6297 } 6298 6299 void changeCanvasOpacity(boolean opaque) { 6300 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6301 if (mAttachInfo.mHardwareRenderer != null) { 6302 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6303 } 6304 } 6305 6306 class TakenSurfaceHolder extends BaseSurfaceHolder { 6307 @Override 6308 public boolean onAllowLockCanvas() { 6309 return mDrawingAllowed; 6310 } 6311 6312 @Override 6313 public void onRelayoutContainer() { 6314 // Not currently interesting -- from changing between fixed and layout size. 6315 } 6316 6317 @Override 6318 public void setFormat(int format) { 6319 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6320 } 6321 6322 @Override 6323 public void setType(int type) { 6324 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6325 } 6326 6327 @Override 6328 public void onUpdateSurface() { 6329 // We take care of format and type changes on our own. 6330 throw new IllegalStateException("Shouldn't be here"); 6331 } 6332 6333 @Override 6334 public boolean isCreating() { 6335 return mIsCreating; 6336 } 6337 6338 @Override 6339 public void setFixedSize(int width, int height) { 6340 throw new UnsupportedOperationException( 6341 "Currently only support sizing from layout"); 6342 } 6343 6344 @Override 6345 public void setKeepScreenOn(boolean screenOn) { 6346 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6347 } 6348 } 6349 6350 static class W extends IWindow.Stub { 6351 private final WeakReference<ViewRootImpl> mViewAncestor; 6352 private final IWindowSession mWindowSession; 6353 6354 W(ViewRootImpl viewAncestor) { 6355 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6356 mWindowSession = viewAncestor.mWindowSession; 6357 } 6358 6359 @Override 6360 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6361 Rect visibleInsets, Rect stableInsets, boolean reportDraw, 6362 Configuration newConfig) { 6363 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6364 if (viewAncestor != null) { 6365 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6366 visibleInsets, stableInsets, reportDraw, newConfig); 6367 } 6368 } 6369 6370 @Override 6371 public void moved(int newX, int newY) { 6372 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6373 if (viewAncestor != null) { 6374 viewAncestor.dispatchMoved(newX, newY); 6375 } 6376 } 6377 6378 @Override 6379 public void dispatchAppVisibility(boolean visible) { 6380 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6381 if (viewAncestor != null) { 6382 viewAncestor.dispatchAppVisibility(visible); 6383 } 6384 } 6385 6386 @Override 6387 public void dispatchGetNewSurface() { 6388 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6389 if (viewAncestor != null) { 6390 viewAncestor.dispatchGetNewSurface(); 6391 } 6392 } 6393 6394 @Override 6395 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6396 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6397 if (viewAncestor != null) { 6398 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6399 } 6400 } 6401 6402 private static int checkCallingPermission(String permission) { 6403 try { 6404 return ActivityManagerNative.getDefault().checkPermission( 6405 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6406 } catch (RemoteException e) { 6407 return PackageManager.PERMISSION_DENIED; 6408 } 6409 } 6410 6411 @Override 6412 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6413 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6414 if (viewAncestor != null) { 6415 final View view = viewAncestor.mView; 6416 if (view != null) { 6417 if (checkCallingPermission(Manifest.permission.DUMP) != 6418 PackageManager.PERMISSION_GRANTED) { 6419 throw new SecurityException("Insufficient permissions to invoke" 6420 + " executeCommand() from pid=" + Binder.getCallingPid() 6421 + ", uid=" + Binder.getCallingUid()); 6422 } 6423 6424 OutputStream clientStream = null; 6425 try { 6426 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6427 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6428 } catch (IOException e) { 6429 e.printStackTrace(); 6430 } finally { 6431 if (clientStream != null) { 6432 try { 6433 clientStream.close(); 6434 } catch (IOException e) { 6435 e.printStackTrace(); 6436 } 6437 } 6438 } 6439 } 6440 } 6441 } 6442 6443 @Override 6444 public void closeSystemDialogs(String reason) { 6445 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6446 if (viewAncestor != null) { 6447 viewAncestor.dispatchCloseSystemDialogs(reason); 6448 } 6449 } 6450 6451 @Override 6452 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6453 boolean sync) { 6454 if (sync) { 6455 try { 6456 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6457 } catch (RemoteException e) { 6458 } 6459 } 6460 } 6461 6462 @Override 6463 public void dispatchWallpaperCommand(String action, int x, int y, 6464 int z, Bundle extras, boolean sync) { 6465 if (sync) { 6466 try { 6467 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6468 } catch (RemoteException e) { 6469 } 6470 } 6471 } 6472 6473 /* Drag/drop */ 6474 @Override 6475 public void dispatchDragEvent(DragEvent event) { 6476 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6477 if (viewAncestor != null) { 6478 viewAncestor.dispatchDragEvent(event); 6479 } 6480 } 6481 6482 @Override 6483 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6484 int localValue, int localChanges) { 6485 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6486 if (viewAncestor != null) { 6487 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6488 localValue, localChanges); 6489 } 6490 } 6491 6492 @Override 6493 public void doneAnimating() { 6494 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6495 if (viewAncestor != null) { 6496 viewAncestor.dispatchDoneAnimating(); 6497 } 6498 } 6499 } 6500 6501 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6502 public CalledFromWrongThreadException(String msg) { 6503 super(msg); 6504 } 6505 } 6506 6507 static RunQueue getRunQueue() { 6508 RunQueue rq = sRunQueues.get(); 6509 if (rq != null) { 6510 return rq; 6511 } 6512 rq = new RunQueue(); 6513 sRunQueues.set(rq); 6514 return rq; 6515 } 6516 6517 /** 6518 * The run queue is used to enqueue pending work from Views when no Handler is 6519 * attached. The work is executed during the next call to performTraversals on 6520 * the thread. 6521 * @hide 6522 */ 6523 static final class RunQueue { 6524 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6525 6526 void post(Runnable action) { 6527 postDelayed(action, 0); 6528 } 6529 6530 void postDelayed(Runnable action, long delayMillis) { 6531 HandlerAction handlerAction = new HandlerAction(); 6532 handlerAction.action = action; 6533 handlerAction.delay = delayMillis; 6534 6535 synchronized (mActions) { 6536 mActions.add(handlerAction); 6537 } 6538 } 6539 6540 void removeCallbacks(Runnable action) { 6541 final HandlerAction handlerAction = new HandlerAction(); 6542 handlerAction.action = action; 6543 6544 synchronized (mActions) { 6545 final ArrayList<HandlerAction> actions = mActions; 6546 6547 while (actions.remove(handlerAction)) { 6548 // Keep going 6549 } 6550 } 6551 } 6552 6553 void executeActions(Handler handler) { 6554 synchronized (mActions) { 6555 final ArrayList<HandlerAction> actions = mActions; 6556 final int count = actions.size(); 6557 6558 for (int i = 0; i < count; i++) { 6559 final HandlerAction handlerAction = actions.get(i); 6560 handler.postDelayed(handlerAction.action, handlerAction.delay); 6561 } 6562 6563 actions.clear(); 6564 } 6565 } 6566 6567 private static class HandlerAction { 6568 Runnable action; 6569 long delay; 6570 6571 @Override 6572 public boolean equals(Object o) { 6573 if (this == o) return true; 6574 if (o == null || getClass() != o.getClass()) return false; 6575 6576 HandlerAction that = (HandlerAction) o; 6577 return !(action != null ? !action.equals(that.action) : that.action != null); 6578 6579 } 6580 6581 @Override 6582 public int hashCode() { 6583 int result = action != null ? action.hashCode() : 0; 6584 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6585 return result; 6586 } 6587 } 6588 } 6589 6590 /** 6591 * Class for managing the accessibility interaction connection 6592 * based on the global accessibility state. 6593 */ 6594 final class AccessibilityInteractionConnectionManager 6595 implements AccessibilityStateChangeListener { 6596 @Override 6597 public void onAccessibilityStateChanged(boolean enabled) { 6598 if (enabled) { 6599 ensureConnection(); 6600 if (mAttachInfo.mHasWindowFocus) { 6601 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6602 View focusedView = mView.findFocus(); 6603 if (focusedView != null && focusedView != mView) { 6604 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6605 } 6606 } 6607 } else { 6608 ensureNoConnection(); 6609 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6610 } 6611 } 6612 6613 public void ensureConnection() { 6614 final boolean registered = 6615 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6616 if (!registered) { 6617 mAttachInfo.mAccessibilityWindowId = 6618 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6619 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6620 } 6621 } 6622 6623 public void ensureNoConnection() { 6624 final boolean registered = 6625 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6626 if (registered) { 6627 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6628 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6629 } 6630 } 6631 } 6632 6633 final class HighContrastTextManager implements HighTextContrastChangeListener { 6634 HighContrastTextManager() { 6635 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 6636 } 6637 @Override 6638 public void onHighTextContrastStateChanged(boolean enabled) { 6639 mAttachInfo.mHighContrastText = enabled; 6640 6641 // Destroy Displaylists so they can be recreated with high contrast recordings 6642 destroyHardwareResources(); 6643 } 6644 } 6645 6646 /** 6647 * This class is an interface this ViewAncestor provides to the 6648 * AccessibilityManagerService to the latter can interact with 6649 * the view hierarchy in this ViewAncestor. 6650 */ 6651 static final class AccessibilityInteractionConnection 6652 extends IAccessibilityInteractionConnection.Stub { 6653 private final WeakReference<ViewRootImpl> mViewRootImpl; 6654 6655 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6656 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6657 } 6658 6659 @Override 6660 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6661 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6662 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6663 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6664 if (viewRootImpl != null && viewRootImpl.mView != null) { 6665 viewRootImpl.getAccessibilityInteractionController() 6666 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6667 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6668 spec); 6669 } else { 6670 // We cannot make the call and notify the caller so it does not wait. 6671 try { 6672 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6673 } catch (RemoteException re) { 6674 /* best effort - ignore */ 6675 } 6676 } 6677 } 6678 6679 @Override 6680 public void performAccessibilityAction(long accessibilityNodeId, int action, 6681 Bundle arguments, int interactionId, 6682 IAccessibilityInteractionConnectionCallback callback, int flags, 6683 int interogatingPid, long interrogatingTid) { 6684 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6685 if (viewRootImpl != null && viewRootImpl.mView != null) { 6686 viewRootImpl.getAccessibilityInteractionController() 6687 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6688 interactionId, callback, flags, interogatingPid, interrogatingTid); 6689 } else { 6690 // We cannot make the call and notify the caller so it does not wait. 6691 try { 6692 callback.setPerformAccessibilityActionResult(false, interactionId); 6693 } catch (RemoteException re) { 6694 /* best effort - ignore */ 6695 } 6696 } 6697 } 6698 6699 @Override 6700 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6701 String viewId, int interactionId, 6702 IAccessibilityInteractionConnectionCallback callback, int flags, 6703 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6704 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6705 if (viewRootImpl != null && viewRootImpl.mView != null) { 6706 viewRootImpl.getAccessibilityInteractionController() 6707 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6708 viewId, interactionId, callback, flags, interrogatingPid, 6709 interrogatingTid, spec); 6710 } else { 6711 // We cannot make the call and notify the caller so it does not wait. 6712 try { 6713 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6714 } catch (RemoteException re) { 6715 /* best effort - ignore */ 6716 } 6717 } 6718 } 6719 6720 @Override 6721 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6722 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6723 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6724 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6725 if (viewRootImpl != null && viewRootImpl.mView != null) { 6726 viewRootImpl.getAccessibilityInteractionController() 6727 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6728 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6729 spec); 6730 } else { 6731 // We cannot make the call and notify the caller so it does not wait. 6732 try { 6733 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6734 } catch (RemoteException re) { 6735 /* best effort - ignore */ 6736 } 6737 } 6738 } 6739 6740 @Override 6741 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6742 IAccessibilityInteractionConnectionCallback callback, int flags, 6743 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6744 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6745 if (viewRootImpl != null && viewRootImpl.mView != null) { 6746 viewRootImpl.getAccessibilityInteractionController() 6747 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6748 flags, interrogatingPid, interrogatingTid, spec); 6749 } else { 6750 // We cannot make the call and notify the caller so it does not wait. 6751 try { 6752 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6753 } catch (RemoteException re) { 6754 /* best effort - ignore */ 6755 } 6756 } 6757 } 6758 6759 @Override 6760 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6761 IAccessibilityInteractionConnectionCallback callback, int flags, 6762 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6763 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6764 if (viewRootImpl != null && viewRootImpl.mView != null) { 6765 viewRootImpl.getAccessibilityInteractionController() 6766 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6767 callback, flags, interrogatingPid, interrogatingTid, spec); 6768 } else { 6769 // We cannot make the call and notify the caller so it does not wait. 6770 try { 6771 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6772 } catch (RemoteException re) { 6773 /* best effort - ignore */ 6774 } 6775 } 6776 } 6777 } 6778 6779 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6780 private int mChangeTypes = 0; 6781 6782 public View mSource; 6783 public long mLastEventTimeMillis; 6784 6785 @Override 6786 public void run() { 6787 // The accessibility may be turned off while we were waiting so check again. 6788 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6789 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6790 AccessibilityEvent event = AccessibilityEvent.obtain(); 6791 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6792 event.setContentChangeTypes(mChangeTypes); 6793 mSource.sendAccessibilityEventUnchecked(event); 6794 } else { 6795 mLastEventTimeMillis = 0; 6796 } 6797 // In any case reset to initial state. 6798 mSource.resetSubtreeAccessibilityStateChanged(); 6799 mSource = null; 6800 mChangeTypes = 0; 6801 } 6802 6803 public void runOrPost(View source, int changeType) { 6804 if (mSource != null) { 6805 // If there is no common predecessor, then mSource points to 6806 // a removed view, hence in this case always prefer the source. 6807 View predecessor = getCommonPredecessor(mSource, source); 6808 mSource = (predecessor != null) ? predecessor : source; 6809 mChangeTypes |= changeType; 6810 return; 6811 } 6812 mSource = source; 6813 mChangeTypes = changeType; 6814 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6815 final long minEventIntevalMillis = 6816 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6817 if (timeSinceLastMillis >= minEventIntevalMillis) { 6818 mSource.removeCallbacks(this); 6819 run(); 6820 } else { 6821 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6822 } 6823 } 6824 } 6825} 6826