ViewRootImpl.java revision a7bb6fbeab933326d58aa806d8194b7b13239d34
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 public static final String PROPERTY_EMULATOR_CIRCULAR = "ro.emulator.circular"; 125 126 /** 127 * Maximum time we allow the user to roll the trackball enough to generate 128 * a key event, before resetting the counters. 129 */ 130 static final int MAX_TRACKBALL_DELAY = 250; 131 132 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 133 134 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 135 static boolean sFirstDrawComplete = false; 136 137 static final ArrayList<ComponentCallbacks> sConfigCallbacks 138 = new ArrayList<ComponentCallbacks>(); 139 140 final Context mContext; 141 final IWindowSession mWindowSession; 142 final Display mDisplay; 143 final DisplayManager mDisplayManager; 144 final String mBasePackageName; 145 146 final int[] mTmpLocation = new int[2]; 147 148 final TypedValue mTmpValue = new TypedValue(); 149 150 final Thread mThread; 151 152 final WindowLeaked mLocation; 153 154 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 155 156 final W mWindow; 157 158 final int mTargetSdkVersion; 159 160 int mSeq; 161 162 View mView; 163 164 View mAccessibilityFocusedHost; 165 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 166 167 int mViewVisibility; 168 boolean mAppVisible = true; 169 int mOrigWindowType = -1; 170 171 // Set to true if the owner of this window is in the stopped state, 172 // so the window should no longer be active. 173 boolean mStopped = false; 174 175 boolean mLastInCompatMode = false; 176 177 SurfaceHolder.Callback2 mSurfaceHolderCallback; 178 BaseSurfaceHolder mSurfaceHolder; 179 boolean mIsCreating; 180 boolean mDrawingAllowed; 181 182 final Region mTransparentRegion; 183 final Region mPreviousTransparentRegion; 184 185 int mWidth; 186 int mHeight; 187 Rect mDirty; 188 boolean mIsAnimating; 189 190 CompatibilityInfo.Translator mTranslator; 191 192 final View.AttachInfo mAttachInfo; 193 InputChannel mInputChannel; 194 InputQueue.Callback mInputQueueCallback; 195 InputQueue mInputQueue; 196 FallbackEventHandler mFallbackEventHandler; 197 Choreographer mChoreographer; 198 199 final Rect mTempRect; // used in the transaction to not thrash the heap. 200 final Rect mVisRect; // used to retrieve visible rect of focused view. 201 202 boolean mTraversalScheduled; 203 int mTraversalBarrier; 204 boolean mWillDrawSoon; 205 /** Set to true while in performTraversals for detecting when die(true) is called from internal 206 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 207 boolean mIsInTraversal; 208 boolean mApplyInsetsRequested; 209 boolean mLayoutRequested; 210 boolean mFirst; 211 boolean mReportNextDraw; 212 boolean mFullRedrawNeeded; 213 boolean mNewSurfaceNeeded; 214 boolean mHasHadWindowFocus; 215 boolean mLastWasImTarget; 216 boolean mWindowsAnimating; 217 boolean mDrawDuringWindowsAnimating; 218 boolean mIsDrawing; 219 int mLastSystemUiVisibility; 220 int mClientWindowLayoutFlags; 221 boolean mLastOverscanRequested; 222 223 // Pool of queued input events. 224 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 225 private QueuedInputEvent mQueuedInputEventPool; 226 private int mQueuedInputEventPoolSize; 227 228 /* Input event queue. 229 * Pending input events are input events waiting to be delivered to the input stages 230 * and handled by the application. 231 */ 232 QueuedInputEvent mPendingInputEventHead; 233 QueuedInputEvent mPendingInputEventTail; 234 int mPendingInputEventCount; 235 boolean mProcessInputEventsScheduled; 236 boolean mUnbufferedInputDispatch; 237 String mPendingInputEventQueueLengthCounterName = "pq"; 238 239 InputStage mFirstInputStage; 240 InputStage mFirstPostImeInputStage; 241 InputStage mSyntheticInputStage; 242 243 boolean mWindowAttributesChanged = false; 244 int mWindowAttributesChangesFlag = 0; 245 246 // These can be accessed by any thread, must be protected with a lock. 247 // Surface can never be reassigned or cleared (use Surface.clear()). 248 final Surface mSurface = new Surface(); 249 250 boolean mAdded; 251 boolean mAddedTouchMode; 252 253 final DisplayAdjustments mDisplayAdjustments; 254 255 // These are accessed by multiple threads. 256 final Rect mWinFrame; // frame given by window manager. 257 258 final Rect mPendingOverscanInsets = new Rect(); 259 final Rect mPendingVisibleInsets = new Rect(); 260 final Rect mPendingStableInsets = new Rect(); 261 final Rect mPendingContentInsets = new Rect(); 262 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 263 = new ViewTreeObserver.InternalInsetsInfo(); 264 265 final Rect mDispatchContentInsets = new Rect(); 266 final Rect mDispatchStableInsets = new Rect(); 267 268 final Configuration mLastConfiguration = new Configuration(); 269 final Configuration mPendingConfiguration = new Configuration(); 270 271 boolean mScrollMayChange; 272 int mSoftInputMode; 273 WeakReference<View> mLastScrolledFocus; 274 int mScrollY; 275 int mCurScrollY; 276 Scroller mScroller; 277 HardwareLayer mResizeBuffer; 278 long mResizeBufferStartTime; 279 int mResizeBufferDuration; 280 // Used to block the creation of the ResizeBuffer due to invalidations in 281 // the previous DisplayList tree that must prevent re-execution. 282 // Currently this means a functor was detached. 283 boolean mBlockResizeBuffer; 284 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 285 private ArrayList<LayoutTransition> mPendingTransitions; 286 287 final ViewConfiguration mViewConfiguration; 288 289 /* Drag/drop */ 290 ClipDescription mDragDescription; 291 View mCurrentDragView; 292 volatile Object mLocalDragState; 293 final PointF mDragPoint = new PointF(); 294 final PointF mLastTouchPoint = new PointF(); 295 296 private boolean mProfileRendering; 297 private Choreographer.FrameCallback mRenderProfiler; 298 private boolean mRenderProfilingEnabled; 299 300 private boolean mMediaDisabled; 301 302 // Variables to track frames per second, enabled via DEBUG_FPS flag 303 private long mFpsStartTime = -1; 304 private long mFpsPrevTime = -1; 305 private int mFpsNumFrames; 306 307 /** 308 * see {@link #playSoundEffect(int)} 309 */ 310 AudioManager mAudioManager; 311 312 final AccessibilityManager mAccessibilityManager; 313 314 AccessibilityInteractionController mAccessibilityInteractionController; 315 316 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 317 HighContrastTextManager mHighContrastTextManager; 318 319 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 320 321 HashSet<View> mTempHashSet; 322 323 private final int mDensity; 324 private final int mNoncompatDensity; 325 326 private boolean mInLayout = false; 327 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 328 boolean mHandlingLayoutInLayoutRequest = false; 329 330 private int mViewLayoutDirectionInitial; 331 332 /** Set to true once doDie() has been called. */ 333 private boolean mRemoved; 334 335 private boolean mIsEmulator; 336 private boolean mIsCircularEmulator; 337 private final boolean mWindowIsRound; 338 339 /** 340 * Consistency verifier for debugging purposes. 341 */ 342 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 343 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 344 new InputEventConsistencyVerifier(this, 0) : null; 345 346 static final class SystemUiVisibilityInfo { 347 int seq; 348 int globalVisibility; 349 int localValue; 350 int localChanges; 351 } 352 353 public ViewRootImpl(Context context, Display display) { 354 mContext = context; 355 mWindowSession = WindowManagerGlobal.getWindowSession(); 356 mDisplay = display; 357 mBasePackageName = context.getBasePackageName(); 358 359 mDisplayAdjustments = display.getDisplayAdjustments(); 360 361 mThread = Thread.currentThread(); 362 mLocation = new WindowLeaked(null); 363 mLocation.fillInStackTrace(); 364 mWidth = -1; 365 mHeight = -1; 366 mDirty = new Rect(); 367 mTempRect = new Rect(); 368 mVisRect = new Rect(); 369 mWinFrame = new Rect(); 370 mWindow = new W(this); 371 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 372 mViewVisibility = View.GONE; 373 mTransparentRegion = new Region(); 374 mPreviousTransparentRegion = new Region(); 375 mFirst = true; // true for the first time the view is added 376 mAdded = false; 377 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 378 mAccessibilityManager = AccessibilityManager.getInstance(context); 379 mAccessibilityInteractionConnectionManager = 380 new AccessibilityInteractionConnectionManager(); 381 mAccessibilityManager.addAccessibilityStateChangeListener( 382 mAccessibilityInteractionConnectionManager); 383 mHighContrastTextManager = new HighContrastTextManager(); 384 mAccessibilityManager.addHighTextContrastStateChangeListener( 385 mHighContrastTextManager); 386 mViewConfiguration = ViewConfiguration.get(context); 387 mDensity = context.getResources().getDisplayMetrics().densityDpi; 388 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 389 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 390 mChoreographer = Choreographer.getInstance(); 391 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 392 loadSystemProperties(); 393 mWindowIsRound = context.getResources().getBoolean( 394 com.android.internal.R.bool.config_windowIsRound); 395 } 396 397 public static void addFirstDrawHandler(Runnable callback) { 398 synchronized (sFirstDrawHandlers) { 399 if (!sFirstDrawComplete) { 400 sFirstDrawHandlers.add(callback); 401 } 402 } 403 } 404 405 public static void addConfigCallback(ComponentCallbacks callback) { 406 synchronized (sConfigCallbacks) { 407 sConfigCallbacks.add(callback); 408 } 409 } 410 411 // FIXME for perf testing only 412 private boolean mProfile = false; 413 414 /** 415 * Call this to profile the next traversal call. 416 * FIXME for perf testing only. Remove eventually 417 */ 418 public void profile() { 419 mProfile = true; 420 } 421 422 /** 423 * Indicates whether we are in touch mode. Calling this method triggers an IPC 424 * call and should be avoided whenever possible. 425 * 426 * @return True, if the device is in touch mode, false otherwise. 427 * 428 * @hide 429 */ 430 static boolean isInTouchMode() { 431 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 432 if (windowSession != null) { 433 try { 434 return windowSession.getInTouchMode(); 435 } catch (RemoteException e) { 436 } 437 } 438 return false; 439 } 440 441 /** 442 * We have one child 443 */ 444 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 445 synchronized (this) { 446 if (mView == null) { 447 mView = view; 448 449 mAttachInfo.mDisplayState = mDisplay.getState(); 450 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 451 452 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 453 mFallbackEventHandler.setView(view); 454 mWindowAttributes.copyFrom(attrs); 455 if (mWindowAttributes.packageName == null) { 456 mWindowAttributes.packageName = mBasePackageName; 457 } 458 attrs = mWindowAttributes; 459 // Keep track of the actual window flags supplied by the client. 460 mClientWindowLayoutFlags = attrs.flags; 461 462 setAccessibilityFocus(null, null); 463 464 if (view instanceof RootViewSurfaceTaker) { 465 mSurfaceHolderCallback = 466 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 467 if (mSurfaceHolderCallback != null) { 468 mSurfaceHolder = new TakenSurfaceHolder(); 469 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 470 } 471 } 472 473 // Compute surface insets required to draw at specified Z value. 474 // TODO: Use real shadow insets for a constant max Z. 475 if (!attrs.hasManualSurfaceInsets) { 476 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 477 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 478 } 479 480 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 481 mTranslator = compatibilityInfo.getTranslator(); 482 mDisplayAdjustments.setActivityToken(attrs.token); 483 484 // If the application owns the surface, don't enable hardware acceleration 485 if (mSurfaceHolder == null) { 486 enableHardwareAcceleration(attrs); 487 } 488 489 boolean restore = false; 490 if (mTranslator != null) { 491 mSurface.setCompatibilityTranslator(mTranslator); 492 restore = true; 493 attrs.backup(); 494 mTranslator.translateWindowLayout(attrs); 495 } 496 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 497 498 if (!compatibilityInfo.supportsScreen()) { 499 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 500 mLastInCompatMode = true; 501 } 502 503 mSoftInputMode = attrs.softInputMode; 504 mWindowAttributesChanged = true; 505 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 506 mAttachInfo.mRootView = view; 507 mAttachInfo.mScalingRequired = mTranslator != null; 508 mAttachInfo.mApplicationScale = 509 mTranslator == null ? 1.0f : mTranslator.applicationScale; 510 if (panelParentView != null) { 511 mAttachInfo.mPanelParentWindowToken 512 = panelParentView.getApplicationWindowToken(); 513 } 514 mAdded = true; 515 int res; /* = WindowManagerImpl.ADD_OKAY; */ 516 517 // Schedule the first layout -before- adding to the window 518 // manager, to make sure we do the relayout before receiving 519 // any other events from the system. 520 requestLayout(); 521 if ((mWindowAttributes.inputFeatures 522 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 523 mInputChannel = new InputChannel(); 524 } 525 try { 526 mOrigWindowType = mWindowAttributes.type; 527 mAttachInfo.mRecomputeGlobalAttributes = true; 528 collectViewAttributes(); 529 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 530 getHostVisibility(), mDisplay.getDisplayId(), 531 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, mInputChannel); 532 } catch (RemoteException e) { 533 mAdded = false; 534 mView = null; 535 mAttachInfo.mRootView = null; 536 mInputChannel = null; 537 mFallbackEventHandler.setView(null); 538 unscheduleTraversals(); 539 setAccessibilityFocus(null, null); 540 throw new RuntimeException("Adding window failed", e); 541 } finally { 542 if (restore) { 543 attrs.restore(); 544 } 545 } 546 547 if (mTranslator != null) { 548 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 549 } 550 mPendingOverscanInsets.set(0, 0, 0, 0); 551 mPendingContentInsets.set(mAttachInfo.mContentInsets); 552 mPendingStableInsets.set(mAttachInfo.mStableInsets); 553 mPendingVisibleInsets.set(0, 0, 0, 0); 554 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 555 if (res < WindowManagerGlobal.ADD_OKAY) { 556 mAttachInfo.mRootView = null; 557 mAdded = false; 558 mFallbackEventHandler.setView(null); 559 unscheduleTraversals(); 560 setAccessibilityFocus(null, null); 561 switch (res) { 562 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 563 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 564 throw new WindowManager.BadTokenException( 565 "Unable to add window -- token " + attrs.token 566 + " is not valid; is your activity running?"); 567 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 568 throw new WindowManager.BadTokenException( 569 "Unable to add window -- token " + attrs.token 570 + " is not for an application"); 571 case WindowManagerGlobal.ADD_APP_EXITING: 572 throw new WindowManager.BadTokenException( 573 "Unable to add window -- app for token " + attrs.token 574 + " is exiting"); 575 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 576 throw new WindowManager.BadTokenException( 577 "Unable to add window -- window " + mWindow 578 + " has already been added"); 579 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 580 // Silently ignore -- we would have just removed it 581 // right away, anyway. 582 return; 583 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 584 throw new WindowManager.BadTokenException( 585 "Unable to add window " + mWindow + 586 " -- another window of this type already exists"); 587 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 588 throw new WindowManager.BadTokenException( 589 "Unable to add window " + mWindow + 590 " -- permission denied for this window type"); 591 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 592 throw new WindowManager.InvalidDisplayException( 593 "Unable to add window " + mWindow + 594 " -- the specified display can not be found"); 595 case WindowManagerGlobal.ADD_INVALID_TYPE: 596 throw new WindowManager.InvalidDisplayException( 597 "Unable to add window " + mWindow 598 + " -- the specified window type is not valid"); 599 } 600 throw new RuntimeException( 601 "Unable to add window -- unknown error code " + res); 602 } 603 604 if (view instanceof RootViewSurfaceTaker) { 605 mInputQueueCallback = 606 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 607 } 608 if (mInputChannel != null) { 609 if (mInputQueueCallback != null) { 610 mInputQueue = new InputQueue(); 611 mInputQueueCallback.onInputQueueCreated(mInputQueue); 612 } 613 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 614 Looper.myLooper()); 615 } 616 617 view.assignParent(this); 618 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 619 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 620 621 if (mAccessibilityManager.isEnabled()) { 622 mAccessibilityInteractionConnectionManager.ensureConnection(); 623 } 624 625 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 626 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 627 } 628 629 // Set up the input pipeline. 630 CharSequence counterSuffix = attrs.getTitle(); 631 mSyntheticInputStage = new SyntheticInputStage(); 632 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 633 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 634 "aq:native-post-ime:" + counterSuffix); 635 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 636 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 637 "aq:ime:" + counterSuffix); 638 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 639 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 640 "aq:native-pre-ime:" + counterSuffix); 641 642 mFirstInputStage = nativePreImeStage; 643 mFirstPostImeInputStage = earlyPostImeStage; 644 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 645 } 646 } 647 } 648 649 /** Whether the window is in local focus mode or not */ 650 private boolean isInLocalFocusMode() { 651 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 652 } 653 654 public CharSequence getTitle() { 655 return mWindowAttributes.getTitle(); 656 } 657 658 void destroyHardwareResources() { 659 if (mAttachInfo.mHardwareRenderer != null) { 660 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 661 mAttachInfo.mHardwareRenderer.destroy(); 662 } 663 } 664 665 public void detachFunctor(long functor) { 666 // TODO: Make the resize buffer some other way to not need this block 667 mBlockResizeBuffer = true; 668 if (mAttachInfo.mHardwareRenderer != null) { 669 // Fence so that any pending invokeFunctor() messages will be processed 670 // before we return from detachFunctor. 671 mAttachInfo.mHardwareRenderer.stopDrawing(); 672 } 673 } 674 675 /** 676 * Schedules the functor for execution in either kModeProcess or 677 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 678 * 679 * @param functor The native functor to invoke 680 * @param waitForCompletion If true, this will not return until the functor 681 * has invoked. If false, the functor may be invoked 682 * asynchronously. 683 */ 684 public void invokeFunctor(long functor, boolean waitForCompletion) { 685 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 686 } 687 688 public void registerAnimatingRenderNode(RenderNode animator) { 689 if (mAttachInfo.mHardwareRenderer != null) { 690 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 691 } else { 692 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 693 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 694 } 695 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 696 } 697 } 698 699 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 700 mAttachInfo.mHardwareAccelerated = false; 701 mAttachInfo.mHardwareAccelerationRequested = false; 702 703 // Don't enable hardware acceleration when the application is in compatibility mode 704 if (mTranslator != null) return; 705 706 // Try to enable hardware acceleration if requested 707 final boolean hardwareAccelerated = 708 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 709 710 if (hardwareAccelerated) { 711 if (!HardwareRenderer.isAvailable()) { 712 return; 713 } 714 715 // Persistent processes (including the system) should not do 716 // accelerated rendering on low-end devices. In that case, 717 // sRendererDisabled will be set. In addition, the system process 718 // itself should never do accelerated rendering. In that case, both 719 // sRendererDisabled and sSystemRendererDisabled are set. When 720 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 721 // can be used by code on the system process to escape that and enable 722 // HW accelerated drawing. (This is basically for the lock screen.) 723 724 final boolean fakeHwAccelerated = (attrs.privateFlags & 725 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 726 final boolean forceHwAccelerated = (attrs.privateFlags & 727 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 728 729 if (fakeHwAccelerated) { 730 // This is exclusively for the preview windows the window manager 731 // shows for launching applications, so they will look more like 732 // the app being launched. 733 mAttachInfo.mHardwareAccelerationRequested = true; 734 } else if (!HardwareRenderer.sRendererDisabled 735 || (HardwareRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 736 if (mAttachInfo.mHardwareRenderer != null) { 737 mAttachInfo.mHardwareRenderer.destroy(); 738 } 739 740 final Rect insets = attrs.surfaceInsets; 741 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 742 || insets.top != 0 || insets.bottom != 0; 743 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 744 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(mContext, translucent); 745 if (mAttachInfo.mHardwareRenderer != null) { 746 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 747 mAttachInfo.mHardwareAccelerated = 748 mAttachInfo.mHardwareAccelerationRequested = true; 749 } 750 } 751 } 752 } 753 754 public View getView() { 755 return mView; 756 } 757 758 final WindowLeaked getLocation() { 759 return mLocation; 760 } 761 762 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 763 synchronized (this) { 764 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 765 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 766 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 767 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 768 final int oldSoftInputMode = mWindowAttributes.softInputMode; 769 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 770 771 // Keep track of the actual window flags supplied by the client. 772 mClientWindowLayoutFlags = attrs.flags; 773 774 // Preserve compatible window flag if exists. 775 final int compatibleWindowFlag = mWindowAttributes.privateFlags 776 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 777 778 // Transfer over system UI visibility values as they carry current state. 779 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 780 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 781 782 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 783 if ((mWindowAttributesChangesFlag 784 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 785 // Recompute system ui visibility. 786 mAttachInfo.mRecomputeGlobalAttributes = true; 787 } 788 if (mWindowAttributes.packageName == null) { 789 mWindowAttributes.packageName = mBasePackageName; 790 } 791 mWindowAttributes.privateFlags |= compatibleWindowFlag; 792 793 // Restore old surface insets. 794 mWindowAttributes.surfaceInsets.set( 795 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 796 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 797 798 applyKeepScreenOnFlag(mWindowAttributes); 799 800 if (newView) { 801 mSoftInputMode = attrs.softInputMode; 802 requestLayout(); 803 } 804 805 // Don't lose the mode we last auto-computed. 806 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 807 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 808 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 809 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 810 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 811 } 812 813 mWindowAttributesChanged = true; 814 scheduleTraversals(); 815 } 816 } 817 818 void handleAppVisibility(boolean visible) { 819 if (mAppVisible != visible) { 820 mAppVisible = visible; 821 scheduleTraversals(); 822 if (!mAppVisible) { 823 WindowManagerGlobal.trimForeground(); 824 } 825 } 826 } 827 828 void handleGetNewSurface() { 829 mNewSurfaceNeeded = true; 830 mFullRedrawNeeded = true; 831 scheduleTraversals(); 832 } 833 834 private final DisplayListener mDisplayListener = new DisplayListener() { 835 @Override 836 public void onDisplayChanged(int displayId) { 837 if (mView != null && mDisplay.getDisplayId() == displayId) { 838 final int oldDisplayState = mAttachInfo.mDisplayState; 839 final int newDisplayState = mDisplay.getState(); 840 if (oldDisplayState != newDisplayState) { 841 mAttachInfo.mDisplayState = newDisplayState; 842 if (oldDisplayState != Display.STATE_UNKNOWN) { 843 final int oldScreenState = toViewScreenState(oldDisplayState); 844 final int newScreenState = toViewScreenState(newDisplayState); 845 if (oldScreenState != newScreenState) { 846 mView.dispatchScreenStateChanged(newScreenState); 847 } 848 if (oldDisplayState == Display.STATE_OFF) { 849 // Draw was suppressed so we need to for it to happen here. 850 mFullRedrawNeeded = true; 851 scheduleTraversals(); 852 } 853 } 854 } 855 } 856 } 857 858 @Override 859 public void onDisplayRemoved(int displayId) { 860 } 861 862 @Override 863 public void onDisplayAdded(int displayId) { 864 } 865 866 private int toViewScreenState(int displayState) { 867 return displayState == Display.STATE_OFF ? 868 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 869 } 870 }; 871 872 @Override 873 public void requestFitSystemWindows() { 874 checkThread(); 875 mApplyInsetsRequested = true; 876 scheduleTraversals(); 877 } 878 879 @Override 880 public void requestLayout() { 881 if (!mHandlingLayoutInLayoutRequest) { 882 checkThread(); 883 mLayoutRequested = true; 884 scheduleTraversals(); 885 } 886 } 887 888 @Override 889 public boolean isLayoutRequested() { 890 return mLayoutRequested; 891 } 892 893 void invalidate() { 894 mDirty.set(0, 0, mWidth, mHeight); 895 if (!mWillDrawSoon) { 896 scheduleTraversals(); 897 } 898 } 899 900 void invalidateWorld(View view) { 901 view.invalidate(); 902 if (view instanceof ViewGroup) { 903 ViewGroup parent = (ViewGroup) view; 904 for (int i = 0; i < parent.getChildCount(); i++) { 905 invalidateWorld(parent.getChildAt(i)); 906 } 907 } 908 } 909 910 @Override 911 public void invalidateChild(View child, Rect dirty) { 912 invalidateChildInParent(null, dirty); 913 } 914 915 @Override 916 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 917 checkThread(); 918 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 919 920 if (dirty == null) { 921 invalidate(); 922 return null; 923 } else if (dirty.isEmpty() && !mIsAnimating) { 924 return null; 925 } 926 927 if (mCurScrollY != 0 || mTranslator != null) { 928 mTempRect.set(dirty); 929 dirty = mTempRect; 930 if (mCurScrollY != 0) { 931 dirty.offset(0, -mCurScrollY); 932 } 933 if (mTranslator != null) { 934 mTranslator.translateRectInAppWindowToScreen(dirty); 935 } 936 if (mAttachInfo.mScalingRequired) { 937 dirty.inset(-1, -1); 938 } 939 } 940 941 final Rect localDirty = mDirty; 942 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 943 mAttachInfo.mSetIgnoreDirtyState = true; 944 mAttachInfo.mIgnoreDirtyState = true; 945 } 946 947 // Add the new dirty rect to the current one 948 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 949 // Intersect with the bounds of the window to skip 950 // updates that lie outside of the visible region 951 final float appScale = mAttachInfo.mApplicationScale; 952 final boolean intersected = localDirty.intersect(0, 0, 953 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 954 if (!intersected) { 955 localDirty.setEmpty(); 956 } 957 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 958 scheduleTraversals(); 959 } 960 961 return null; 962 } 963 964 void setStopped(boolean stopped) { 965 if (mStopped != stopped) { 966 mStopped = stopped; 967 if (!stopped) { 968 scheduleTraversals(); 969 } 970 } 971 } 972 973 @Override 974 public ViewParent getParent() { 975 return null; 976 } 977 978 @Override 979 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 980 if (child != mView) { 981 throw new RuntimeException("child is not mine, honest!"); 982 } 983 // Note: don't apply scroll offset, because we want to know its 984 // visibility in the virtual canvas being given to the view hierarchy. 985 return r.intersect(0, 0, mWidth, mHeight); 986 } 987 988 @Override 989 public void bringChildToFront(View child) { 990 } 991 992 int getHostVisibility() { 993 return mAppVisible ? mView.getVisibility() : View.GONE; 994 } 995 996 void disposeResizeBuffer() { 997 if (mResizeBuffer != null) { 998 mResizeBuffer.destroy(); 999 mResizeBuffer = null; 1000 } 1001 } 1002 1003 /** 1004 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1005 * This list will be cleared after the transitions on the list are start()'ed. These 1006 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1007 * happens during the layout phase of traversal, which we want to complete before any of the 1008 * animations are started (because those animations may side-effect properties that layout 1009 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1010 * to the list and it is started just prior to starting the drawing phase of traversal. 1011 * 1012 * @param transition The LayoutTransition to be started on the next traversal. 1013 * 1014 * @hide 1015 */ 1016 public void requestTransitionStart(LayoutTransition transition) { 1017 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1018 if (mPendingTransitions == null) { 1019 mPendingTransitions = new ArrayList<LayoutTransition>(); 1020 } 1021 mPendingTransitions.add(transition); 1022 } 1023 } 1024 1025 /** 1026 * Notifies the HardwareRenderer that a new frame will be coming soon. 1027 * Currently only {@link ThreadedRenderer} cares about this, and uses 1028 * this knowledge to adjust the scheduling of off-thread animations 1029 */ 1030 void notifyRendererOfFramePending() { 1031 if (mAttachInfo.mHardwareRenderer != null) { 1032 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1033 } 1034 } 1035 1036 void scheduleTraversals() { 1037 if (!mTraversalScheduled) { 1038 mTraversalScheduled = true; 1039 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 1040 mChoreographer.postCallback( 1041 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1042 if (!mUnbufferedInputDispatch) { 1043 scheduleConsumeBatchedInput(); 1044 } 1045 notifyRendererOfFramePending(); 1046 } 1047 } 1048 1049 void unscheduleTraversals() { 1050 if (mTraversalScheduled) { 1051 mTraversalScheduled = false; 1052 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1053 mChoreographer.removeCallbacks( 1054 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1055 } 1056 } 1057 1058 void doTraversal() { 1059 if (mTraversalScheduled) { 1060 mTraversalScheduled = false; 1061 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1062 1063 if (mProfile) { 1064 Debug.startMethodTracing("ViewAncestor"); 1065 } 1066 1067 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 1068 try { 1069 performTraversals(); 1070 } finally { 1071 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1072 } 1073 1074 if (mProfile) { 1075 Debug.stopMethodTracing(); 1076 mProfile = false; 1077 } 1078 } 1079 } 1080 1081 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1082 // Update window's global keep screen on flag: if a view has requested 1083 // that the screen be kept on, then it is always set; otherwise, it is 1084 // set to whatever the client last requested for the global state. 1085 if (mAttachInfo.mKeepScreenOn) { 1086 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1087 } else { 1088 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1089 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1090 } 1091 } 1092 1093 private boolean collectViewAttributes() { 1094 if (mAttachInfo.mRecomputeGlobalAttributes) { 1095 //Log.i(TAG, "Computing view hierarchy attributes!"); 1096 mAttachInfo.mRecomputeGlobalAttributes = false; 1097 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1098 mAttachInfo.mKeepScreenOn = false; 1099 mAttachInfo.mSystemUiVisibility = 0; 1100 mAttachInfo.mHasSystemUiListeners = false; 1101 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1102 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1103 WindowManager.LayoutParams params = mWindowAttributes; 1104 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1105 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1106 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1107 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1108 applyKeepScreenOnFlag(params); 1109 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1110 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1111 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1112 return true; 1113 } 1114 } 1115 return false; 1116 } 1117 1118 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1119 int vis = 0; 1120 // Translucent decor window flags imply stable system ui visibility. 1121 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1122 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1123 } 1124 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1125 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1126 } 1127 return vis; 1128 } 1129 1130 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1131 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1132 int childWidthMeasureSpec; 1133 int childHeightMeasureSpec; 1134 boolean windowSizeMayChange = false; 1135 1136 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1137 "Measuring " + host + " in display " + desiredWindowWidth 1138 + "x" + desiredWindowHeight + "..."); 1139 1140 boolean goodMeasure = false; 1141 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1142 // On large screens, we don't want to allow dialogs to just 1143 // stretch to fill the entire width of the screen to display 1144 // one line of text. First try doing the layout at a smaller 1145 // size to see if it will fit. 1146 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1147 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1148 int baseSize = 0; 1149 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1150 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1151 } 1152 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1153 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1154 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1155 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1156 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1157 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1158 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1159 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1160 goodMeasure = true; 1161 } else { 1162 // Didn't fit in that size... try expanding a bit. 1163 baseSize = (baseSize+desiredWindowWidth)/2; 1164 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1165 + baseSize); 1166 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1167 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1168 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1169 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1170 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1171 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1172 goodMeasure = true; 1173 } 1174 } 1175 } 1176 } 1177 1178 if (!goodMeasure) { 1179 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1180 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1181 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1182 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1183 windowSizeMayChange = true; 1184 } 1185 } 1186 1187 if (DBG) { 1188 System.out.println("======================================"); 1189 System.out.println("performTraversals -- after measure"); 1190 host.debug(); 1191 } 1192 1193 return windowSizeMayChange; 1194 } 1195 1196 /** 1197 * Modifies the input matrix such that it maps view-local coordinates to 1198 * on-screen coordinates. 1199 * 1200 * @param m input matrix to modify 1201 */ 1202 void transformMatrixToGlobal(Matrix m) { 1203 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1204 } 1205 1206 /** 1207 * Modifies the input matrix such that it maps on-screen coordinates to 1208 * view-local coordinates. 1209 * 1210 * @param m input matrix to modify 1211 */ 1212 void transformMatrixToLocal(Matrix m) { 1213 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1214 } 1215 1216 void dispatchApplyInsets(View host) { 1217 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1218 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1219 final boolean isRound = (mIsEmulator && mIsCircularEmulator) || mWindowIsRound; 1220 host.dispatchApplyWindowInsets(new WindowInsets( 1221 mDispatchContentInsets, null /* windowDecorInsets */, 1222 mDispatchStableInsets, isRound)); 1223 } 1224 1225 private void performTraversals() { 1226 // cache mView since it is used so much below... 1227 final View host = mView; 1228 1229 if (DBG) { 1230 System.out.println("======================================"); 1231 System.out.println("performTraversals"); 1232 host.debug(); 1233 } 1234 1235 if (host == null || !mAdded) 1236 return; 1237 1238 mIsInTraversal = true; 1239 mWillDrawSoon = true; 1240 boolean windowSizeMayChange = false; 1241 boolean newSurface = false; 1242 boolean surfaceChanged = false; 1243 WindowManager.LayoutParams lp = mWindowAttributes; 1244 1245 int desiredWindowWidth; 1246 int desiredWindowHeight; 1247 1248 final int viewVisibility = getHostVisibility(); 1249 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1250 || mNewSurfaceNeeded; 1251 1252 WindowManager.LayoutParams params = null; 1253 if (mWindowAttributesChanged) { 1254 mWindowAttributesChanged = false; 1255 surfaceChanged = true; 1256 params = lp; 1257 } 1258 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1259 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1260 params = lp; 1261 mFullRedrawNeeded = true; 1262 mLayoutRequested = true; 1263 if (mLastInCompatMode) { 1264 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1265 mLastInCompatMode = false; 1266 } else { 1267 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1268 mLastInCompatMode = true; 1269 } 1270 } 1271 1272 mWindowAttributesChangesFlag = 0; 1273 1274 Rect frame = mWinFrame; 1275 if (mFirst) { 1276 mFullRedrawNeeded = true; 1277 mLayoutRequested = true; 1278 1279 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1280 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1281 // NOTE -- system code, won't try to do compat mode. 1282 Point size = new Point(); 1283 mDisplay.getRealSize(size); 1284 desiredWindowWidth = size.x; 1285 desiredWindowHeight = size.y; 1286 } else { 1287 DisplayMetrics packageMetrics = 1288 mView.getContext().getResources().getDisplayMetrics(); 1289 desiredWindowWidth = packageMetrics.widthPixels; 1290 desiredWindowHeight = packageMetrics.heightPixels; 1291 } 1292 1293 // We used to use the following condition to choose 32 bits drawing caches: 1294 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1295 // However, windows are now always 32 bits by default, so choose 32 bits 1296 mAttachInfo.mUse32BitDrawingCache = true; 1297 mAttachInfo.mHasWindowFocus = false; 1298 mAttachInfo.mWindowVisibility = viewVisibility; 1299 mAttachInfo.mRecomputeGlobalAttributes = false; 1300 viewVisibilityChanged = false; 1301 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1302 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1303 // Set the layout direction if it has not been set before (inherit is the default) 1304 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1305 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1306 } 1307 host.dispatchAttachedToWindow(mAttachInfo, 0); 1308 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1309 dispatchApplyInsets(host); 1310 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1311 1312 } else { 1313 desiredWindowWidth = frame.width(); 1314 desiredWindowHeight = frame.height(); 1315 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1316 if (DEBUG_ORIENTATION) Log.v(TAG, 1317 "View " + host + " resized to: " + frame); 1318 mFullRedrawNeeded = true; 1319 mLayoutRequested = true; 1320 windowSizeMayChange = true; 1321 } 1322 } 1323 1324 if (viewVisibilityChanged) { 1325 mAttachInfo.mWindowVisibility = viewVisibility; 1326 host.dispatchWindowVisibilityChanged(viewVisibility); 1327 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1328 destroyHardwareResources(); 1329 } 1330 if (viewVisibility == View.GONE) { 1331 // After making a window gone, we will count it as being 1332 // shown for the first time the next time it gets focus. 1333 mHasHadWindowFocus = false; 1334 } 1335 } 1336 1337 // Non-visible windows can't hold accessibility focus. 1338 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1339 host.clearAccessibilityFocus(); 1340 } 1341 1342 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1343 getRunQueue().executeActions(mAttachInfo.mHandler); 1344 1345 boolean insetsChanged = false; 1346 1347 boolean layoutRequested = mLayoutRequested && !mStopped; 1348 if (layoutRequested) { 1349 1350 final Resources res = mView.getContext().getResources(); 1351 1352 if (mFirst) { 1353 // make sure touch mode code executes by setting cached value 1354 // to opposite of the added touch mode. 1355 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1356 ensureTouchModeLocally(mAddedTouchMode); 1357 } else { 1358 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1359 insetsChanged = true; 1360 } 1361 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1362 insetsChanged = true; 1363 } 1364 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1365 insetsChanged = true; 1366 } 1367 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1368 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1369 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1370 + mAttachInfo.mVisibleInsets); 1371 } 1372 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1373 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1374 windowSizeMayChange = true; 1375 1376 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1377 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1378 // NOTE -- system code, won't try to do compat mode. 1379 Point size = new Point(); 1380 mDisplay.getRealSize(size); 1381 desiredWindowWidth = size.x; 1382 desiredWindowHeight = size.y; 1383 } else { 1384 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1385 desiredWindowWidth = packageMetrics.widthPixels; 1386 desiredWindowHeight = packageMetrics.heightPixels; 1387 } 1388 } 1389 } 1390 1391 // Ask host how big it wants to be 1392 windowSizeMayChange |= measureHierarchy(host, lp, res, 1393 desiredWindowWidth, desiredWindowHeight); 1394 } 1395 1396 if (collectViewAttributes()) { 1397 params = lp; 1398 } 1399 if (mAttachInfo.mForceReportNewAttributes) { 1400 mAttachInfo.mForceReportNewAttributes = false; 1401 params = lp; 1402 } 1403 1404 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1405 mAttachInfo.mViewVisibilityChanged = false; 1406 int resizeMode = mSoftInputMode & 1407 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1408 // If we are in auto resize mode, then we need to determine 1409 // what mode to use now. 1410 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1411 final int N = mAttachInfo.mScrollContainers.size(); 1412 for (int i=0; i<N; i++) { 1413 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1414 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1415 } 1416 } 1417 if (resizeMode == 0) { 1418 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1419 } 1420 if ((lp.softInputMode & 1421 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1422 lp.softInputMode = (lp.softInputMode & 1423 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1424 resizeMode; 1425 params = lp; 1426 } 1427 } 1428 } 1429 1430 if (params != null) { 1431 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1432 if (!PixelFormat.formatHasAlpha(params.format)) { 1433 params.format = PixelFormat.TRANSLUCENT; 1434 } 1435 } 1436 mAttachInfo.mOverscanRequested = (params.flags 1437 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1438 } 1439 1440 if (mApplyInsetsRequested) { 1441 mApplyInsetsRequested = false; 1442 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1443 dispatchApplyInsets(host); 1444 if (mLayoutRequested) { 1445 // Short-circuit catching a new layout request here, so 1446 // we don't need to go through two layout passes when things 1447 // change due to fitting system windows, which can happen a lot. 1448 windowSizeMayChange |= measureHierarchy(host, lp, 1449 mView.getContext().getResources(), 1450 desiredWindowWidth, desiredWindowHeight); 1451 } 1452 } 1453 1454 if (layoutRequested) { 1455 // Clear this now, so that if anything requests a layout in the 1456 // rest of this function we will catch it and re-run a full 1457 // layout pass. 1458 mLayoutRequested = false; 1459 } 1460 1461 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1462 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1463 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1464 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1465 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1466 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1467 1468 // Determine whether to compute insets. 1469 // If there are no inset listeners remaining then we may still need to compute 1470 // insets in case the old insets were non-empty and must be reset. 1471 final boolean computesInternalInsets = 1472 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1473 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1474 1475 boolean insetsPending = false; 1476 int relayoutResult = 0; 1477 1478 if (mFirst || windowShouldResize || insetsChanged || 1479 viewVisibilityChanged || params != null) { 1480 1481 if (viewVisibility == View.VISIBLE) { 1482 // If this window is giving internal insets to the window 1483 // manager, and it is being added or changing its visibility, 1484 // then we want to first give the window manager "fake" 1485 // insets to cause it to effectively ignore the content of 1486 // the window during layout. This avoids it briefly causing 1487 // other windows to resize/move based on the raw frame of the 1488 // window, waiting until we can finish laying out this window 1489 // and get back to the window manager with the ultimately 1490 // computed insets. 1491 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1492 } 1493 1494 if (mSurfaceHolder != null) { 1495 mSurfaceHolder.mSurfaceLock.lock(); 1496 mDrawingAllowed = true; 1497 } 1498 1499 boolean hwInitialized = false; 1500 boolean contentInsetsChanged = false; 1501 boolean hadSurface = mSurface.isValid(); 1502 1503 try { 1504 if (DEBUG_LAYOUT) { 1505 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1506 host.getMeasuredHeight() + ", params=" + params); 1507 } 1508 1509 if (mAttachInfo.mHardwareRenderer != null) { 1510 // relayoutWindow may decide to destroy mSurface. As that decision 1511 // happens in WindowManager service, we need to be defensive here 1512 // and stop using the surface in case it gets destroyed. 1513 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1514 // Animations were running so we need to push a frame 1515 // to resume them 1516 mDirty.set(0, 0, mWidth, mHeight); 1517 } 1518 } 1519 final int surfaceGenerationId = mSurface.getGenerationId(); 1520 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1521 if (!mDrawDuringWindowsAnimating && 1522 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1523 mWindowsAnimating = true; 1524 } 1525 1526 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1527 + " overscan=" + mPendingOverscanInsets.toShortString() 1528 + " content=" + mPendingContentInsets.toShortString() 1529 + " visible=" + mPendingVisibleInsets.toShortString() 1530 + " visible=" + mPendingStableInsets.toShortString() 1531 + " surface=" + mSurface); 1532 1533 if (mPendingConfiguration.seq != 0) { 1534 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1535 + mPendingConfiguration); 1536 updateConfiguration(mPendingConfiguration, !mFirst); 1537 mPendingConfiguration.seq = 0; 1538 } 1539 1540 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1541 mAttachInfo.mOverscanInsets); 1542 contentInsetsChanged = !mPendingContentInsets.equals( 1543 mAttachInfo.mContentInsets); 1544 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1545 mAttachInfo.mVisibleInsets); 1546 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1547 mAttachInfo.mStableInsets); 1548 if (contentInsetsChanged) { 1549 if (mWidth > 0 && mHeight > 0 && lp != null && 1550 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1551 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1552 mSurface != null && mSurface.isValid() && 1553 !mAttachInfo.mTurnOffWindowResizeAnim && 1554 mAttachInfo.mHardwareRenderer != null && 1555 mAttachInfo.mHardwareRenderer.isEnabled() && 1556 lp != null && !PixelFormat.formatHasAlpha(lp.format) 1557 && !mBlockResizeBuffer) { 1558 1559 disposeResizeBuffer(); 1560 1561// TODO: Again.... 1562// if (mResizeBuffer == null) { 1563// mResizeBuffer = mAttachInfo.mHardwareRenderer.createDisplayListLayer( 1564// mWidth, mHeight); 1565// } 1566// mResizeBuffer.prepare(mWidth, mHeight, false); 1567// RenderNode layerRenderNode = mResizeBuffer.startRecording(); 1568// HardwareCanvas layerCanvas = layerRenderNode.start(mWidth, mHeight); 1569// try { 1570// final int restoreCount = layerCanvas.save(); 1571// 1572// int yoff; 1573// final boolean scrolling = mScroller != null 1574// && mScroller.computeScrollOffset(); 1575// if (scrolling) { 1576// yoff = mScroller.getCurrY(); 1577// mScroller.abortAnimation(); 1578// } else { 1579// yoff = mScrollY; 1580// } 1581// 1582// layerCanvas.translate(0, -yoff); 1583// if (mTranslator != null) { 1584// mTranslator.translateCanvas(layerCanvas); 1585// } 1586// 1587// RenderNode renderNode = mView.mRenderNode; 1588// if (renderNode != null && renderNode.isValid()) { 1589// layerCanvas.drawDisplayList(renderNode, null, 1590// RenderNode.FLAG_CLIP_CHILDREN); 1591// } else { 1592// mView.draw(layerCanvas); 1593// } 1594// 1595// drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1596// 1597// mResizeBufferStartTime = SystemClock.uptimeMillis(); 1598// mResizeBufferDuration = mView.getResources().getInteger( 1599// com.android.internal.R.integer.config_mediumAnimTime); 1600// 1601// layerCanvas.restoreToCount(restoreCount); 1602// layerRenderNode.end(layerCanvas); 1603// layerRenderNode.setCaching(true); 1604// layerRenderNode.setLeftTopRightBottom(0, 0, mWidth, mHeight); 1605// mTempRect.set(0, 0, mWidth, mHeight); 1606// } finally { 1607// mResizeBuffer.endRecording(mTempRect); 1608// } 1609// mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 1610 } 1611 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1612 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1613 + mAttachInfo.mContentInsets); 1614 } 1615 if (overscanInsetsChanged) { 1616 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1617 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1618 + mAttachInfo.mOverscanInsets); 1619 // Need to relayout with content insets. 1620 contentInsetsChanged = true; 1621 } 1622 if (stableInsetsChanged) { 1623 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1624 if (DEBUG_LAYOUT) Log.v(TAG, "Decor insets changing to: " 1625 + mAttachInfo.mStableInsets); 1626 // Need to relayout with content insets. 1627 contentInsetsChanged = true; 1628 } 1629 if (contentInsetsChanged || mLastSystemUiVisibility != 1630 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1631 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1632 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1633 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1634 mApplyInsetsRequested = false; 1635 dispatchApplyInsets(host); 1636 } 1637 if (visibleInsetsChanged) { 1638 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1639 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1640 + mAttachInfo.mVisibleInsets); 1641 } 1642 1643 if (!hadSurface) { 1644 if (mSurface.isValid()) { 1645 // If we are creating a new surface, then we need to 1646 // completely redraw it. Also, when we get to the 1647 // point of drawing it we will hold off and schedule 1648 // a new traversal instead. This is so we can tell the 1649 // window manager about all of the windows being displayed 1650 // before actually drawing them, so it can display then 1651 // all at once. 1652 newSurface = true; 1653 mFullRedrawNeeded = true; 1654 mPreviousTransparentRegion.setEmpty(); 1655 1656 if (mAttachInfo.mHardwareRenderer != null) { 1657 try { 1658 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1659 mSurface); 1660 } catch (OutOfResourcesException e) { 1661 handleOutOfResourcesException(e); 1662 return; 1663 } 1664 } 1665 } 1666 } else if (!mSurface.isValid()) { 1667 // If the surface has been removed, then reset the scroll 1668 // positions. 1669 if (mLastScrolledFocus != null) { 1670 mLastScrolledFocus.clear(); 1671 } 1672 mScrollY = mCurScrollY = 0; 1673 if (mView instanceof RootViewSurfaceTaker) { 1674 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1675 } 1676 if (mScroller != null) { 1677 mScroller.abortAnimation(); 1678 } 1679 disposeResizeBuffer(); 1680 // Our surface is gone 1681 if (mAttachInfo.mHardwareRenderer != null && 1682 mAttachInfo.mHardwareRenderer.isEnabled()) { 1683 mAttachInfo.mHardwareRenderer.destroy(); 1684 } 1685 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1686 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1687 mFullRedrawNeeded = true; 1688 try { 1689 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1690 } catch (OutOfResourcesException e) { 1691 handleOutOfResourcesException(e); 1692 return; 1693 } 1694 } 1695 } catch (RemoteException e) { 1696 } 1697 1698 if (DEBUG_ORIENTATION) Log.v( 1699 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1700 1701 mAttachInfo.mWindowLeft = frame.left; 1702 mAttachInfo.mWindowTop = frame.top; 1703 1704 // !!FIXME!! This next section handles the case where we did not get the 1705 // window size we asked for. We should avoid this by getting a maximum size from 1706 // the window session beforehand. 1707 if (mWidth != frame.width() || mHeight != frame.height()) { 1708 mWidth = frame.width(); 1709 mHeight = frame.height(); 1710 } 1711 1712 if (mSurfaceHolder != null) { 1713 // The app owns the surface; tell it about what is going on. 1714 if (mSurface.isValid()) { 1715 // XXX .copyFrom() doesn't work! 1716 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1717 mSurfaceHolder.mSurface = mSurface; 1718 } 1719 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1720 mSurfaceHolder.mSurfaceLock.unlock(); 1721 if (mSurface.isValid()) { 1722 if (!hadSurface) { 1723 mSurfaceHolder.ungetCallbacks(); 1724 1725 mIsCreating = true; 1726 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1727 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1728 if (callbacks != null) { 1729 for (SurfaceHolder.Callback c : callbacks) { 1730 c.surfaceCreated(mSurfaceHolder); 1731 } 1732 } 1733 surfaceChanged = true; 1734 } 1735 if (surfaceChanged) { 1736 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1737 lp.format, mWidth, mHeight); 1738 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1739 if (callbacks != null) { 1740 for (SurfaceHolder.Callback c : callbacks) { 1741 c.surfaceChanged(mSurfaceHolder, lp.format, 1742 mWidth, mHeight); 1743 } 1744 } 1745 } 1746 mIsCreating = false; 1747 } else if (hadSurface) { 1748 mSurfaceHolder.ungetCallbacks(); 1749 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1750 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1751 if (callbacks != null) { 1752 for (SurfaceHolder.Callback c : callbacks) { 1753 c.surfaceDestroyed(mSurfaceHolder); 1754 } 1755 } 1756 mSurfaceHolder.mSurfaceLock.lock(); 1757 try { 1758 mSurfaceHolder.mSurface = new Surface(); 1759 } finally { 1760 mSurfaceHolder.mSurfaceLock.unlock(); 1761 } 1762 } 1763 } 1764 1765 if (mAttachInfo.mHardwareRenderer != null && 1766 mAttachInfo.mHardwareRenderer.isEnabled()) { 1767 if (hwInitialized || 1768 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1769 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1770 mAttachInfo.mHardwareRenderer.setup( 1771 mWidth, mHeight, mWindowAttributes.surfaceInsets); 1772 if (!hwInitialized) { 1773 mAttachInfo.mHardwareRenderer.invalidate(mSurface); 1774 mFullRedrawNeeded = true; 1775 } 1776 } 1777 } 1778 1779 if (!mStopped) { 1780 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1781 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1782 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1783 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1784 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1785 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1786 1787 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1788 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1789 + " mHeight=" + mHeight 1790 + " measuredHeight=" + host.getMeasuredHeight() 1791 + " coveredInsetsChanged=" + contentInsetsChanged); 1792 1793 // Ask host how big it wants to be 1794 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1795 1796 // Implementation of weights from WindowManager.LayoutParams 1797 // We just grow the dimensions as needed and re-measure if 1798 // needs be 1799 int width = host.getMeasuredWidth(); 1800 int height = host.getMeasuredHeight(); 1801 boolean measureAgain = false; 1802 1803 if (lp.horizontalWeight > 0.0f) { 1804 width += (int) ((mWidth - width) * lp.horizontalWeight); 1805 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1806 MeasureSpec.EXACTLY); 1807 measureAgain = true; 1808 } 1809 if (lp.verticalWeight > 0.0f) { 1810 height += (int) ((mHeight - height) * lp.verticalWeight); 1811 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1812 MeasureSpec.EXACTLY); 1813 measureAgain = true; 1814 } 1815 1816 if (measureAgain) { 1817 if (DEBUG_LAYOUT) Log.v(TAG, 1818 "And hey let's measure once more: width=" + width 1819 + " height=" + height); 1820 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1821 } 1822 1823 layoutRequested = true; 1824 } 1825 } 1826 } else { 1827 // Not the first pass and no window/insets/visibility change but the window 1828 // may have moved and we need check that and if so to update the left and right 1829 // in the attach info. We translate only the window frame since on window move 1830 // the window manager tells us only for the new frame but the insets are the 1831 // same and we do not want to translate them more than once. 1832 1833 // TODO: Well, we are checking whether the frame has changed similarly 1834 // to how this is done for the insets. This is however incorrect since 1835 // the insets and the frame are translated. For example, the old frame 1836 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1837 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1838 // true since we are comparing a not translated value to a translated one. 1839 // This scenario is rare but we may want to fix that. 1840 1841 final boolean windowMoved = (mAttachInfo.mWindowLeft != frame.left 1842 || mAttachInfo.mWindowTop != frame.top); 1843 if (windowMoved) { 1844 if (mTranslator != null) { 1845 mTranslator.translateRectInScreenToAppWinFrame(frame); 1846 } 1847 mAttachInfo.mWindowLeft = frame.left; 1848 mAttachInfo.mWindowTop = frame.top; 1849 } 1850 } 1851 1852 final boolean didLayout = layoutRequested && !mStopped; 1853 boolean triggerGlobalLayoutListener = didLayout 1854 || mAttachInfo.mRecomputeGlobalAttributes; 1855 if (didLayout) { 1856 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1857 1858 // By this point all views have been sized and positioned 1859 // We can compute the transparent area 1860 1861 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1862 // start out transparent 1863 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1864 host.getLocationInWindow(mTmpLocation); 1865 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1866 mTmpLocation[0] + host.mRight - host.mLeft, 1867 mTmpLocation[1] + host.mBottom - host.mTop); 1868 1869 host.gatherTransparentRegion(mTransparentRegion); 1870 if (mTranslator != null) { 1871 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1872 } 1873 1874 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1875 mPreviousTransparentRegion.set(mTransparentRegion); 1876 mFullRedrawNeeded = true; 1877 // reconfigure window manager 1878 try { 1879 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1880 } catch (RemoteException e) { 1881 } 1882 } 1883 } 1884 1885 if (DBG) { 1886 System.out.println("======================================"); 1887 System.out.println("performTraversals -- after setFrame"); 1888 host.debug(); 1889 } 1890 } 1891 1892 if (triggerGlobalLayoutListener) { 1893 mAttachInfo.mRecomputeGlobalAttributes = false; 1894 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1895 } 1896 1897 if (computesInternalInsets) { 1898 // Clear the original insets. 1899 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 1900 insets.reset(); 1901 1902 // Compute new insets in place. 1903 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1904 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1905 1906 // Tell the window manager. 1907 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1908 mLastGivenInsets.set(insets); 1909 1910 // Translate insets to screen coordinates if needed. 1911 final Rect contentInsets; 1912 final Rect visibleInsets; 1913 final Region touchableRegion; 1914 if (mTranslator != null) { 1915 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1916 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1917 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1918 } else { 1919 contentInsets = insets.contentInsets; 1920 visibleInsets = insets.visibleInsets; 1921 touchableRegion = insets.touchableRegion; 1922 } 1923 1924 try { 1925 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1926 contentInsets, visibleInsets, touchableRegion); 1927 } catch (RemoteException e) { 1928 } 1929 } 1930 } 1931 1932 boolean skipDraw = false; 1933 1934 if (mFirst) { 1935 // handle first focus request 1936 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1937 + mView.hasFocus()); 1938 if (mView != null) { 1939 if (!mView.hasFocus()) { 1940 mView.requestFocus(View.FOCUS_FORWARD); 1941 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1942 + mView.findFocus()); 1943 } else { 1944 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1945 + mView.findFocus()); 1946 } 1947 } 1948 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1949 // The first time we relayout the window, if the system is 1950 // doing window animations, we want to hold of on any future 1951 // draws until the animation is done. 1952 mWindowsAnimating = true; 1953 } 1954 } else if (mWindowsAnimating) { 1955 skipDraw = true; 1956 } 1957 1958 mFirst = false; 1959 mWillDrawSoon = false; 1960 mNewSurfaceNeeded = false; 1961 mViewVisibility = viewVisibility; 1962 1963 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1964 final boolean imTarget = WindowManager.LayoutParams 1965 .mayUseInputMethod(mWindowAttributes.flags); 1966 if (imTarget != mLastWasImTarget) { 1967 mLastWasImTarget = imTarget; 1968 InputMethodManager imm = InputMethodManager.peekInstance(); 1969 if (imm != null && imTarget) { 1970 imm.startGettingWindowFocus(mView); 1971 imm.onWindowFocus(mView, mView.findFocus(), 1972 mWindowAttributes.softInputMode, 1973 !mHasHadWindowFocus, mWindowAttributes.flags); 1974 } 1975 } 1976 } 1977 1978 // Remember if we must report the next draw. 1979 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1980 mReportNextDraw = true; 1981 } 1982 1983 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || 1984 viewVisibility != View.VISIBLE; 1985 1986 if (!cancelDraw && !newSurface) { 1987 if (!skipDraw || mReportNextDraw) { 1988 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1989 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1990 mPendingTransitions.get(i).startChangingAnimations(); 1991 } 1992 mPendingTransitions.clear(); 1993 } 1994 1995 performDraw(); 1996 } 1997 } else { 1998 if (viewVisibility == View.VISIBLE) { 1999 // Try again 2000 scheduleTraversals(); 2001 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2002 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2003 mPendingTransitions.get(i).endChangingAnimations(); 2004 } 2005 mPendingTransitions.clear(); 2006 } 2007 } 2008 2009 mIsInTraversal = false; 2010 } 2011 2012 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2013 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 2014 try { 2015 if (!mWindowSession.outOfMemory(mWindow) && 2016 Process.myUid() != Process.SYSTEM_UID) { 2017 Slog.w(TAG, "No processes killed for memory; killing self"); 2018 Process.killProcess(Process.myPid()); 2019 } 2020 } catch (RemoteException ex) { 2021 } 2022 mLayoutRequested = true; // ask wm for a new surface next time. 2023 } 2024 2025 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2026 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2027 try { 2028 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2029 } finally { 2030 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2031 } 2032 } 2033 2034 /** 2035 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2036 * is currently undergoing a layout pass. 2037 * 2038 * @return whether the view hierarchy is currently undergoing a layout pass 2039 */ 2040 boolean isInLayout() { 2041 return mInLayout; 2042 } 2043 2044 /** 2045 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2046 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2047 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2048 * all children in that container hierarchy are measured and laid out at the end of the layout 2049 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2050 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2051 * we check all of those views to see if any still have pending layout requests, which 2052 * indicates that they were not correctly handled by their container hierarchy. If that is 2053 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2054 * to blank containers, and force a second request/measure/layout pass in this frame. If 2055 * more requestLayout() calls are received during that second layout pass, we post those 2056 * requests to the next frame to avoid possible infinite loops. 2057 * 2058 * <p>The return value from this method indicates whether the request should proceed 2059 * (if it is a request during the first layout pass) or should be skipped and posted to the 2060 * next frame (if it is a request during the second layout pass).</p> 2061 * 2062 * @param view the view that requested the layout. 2063 * 2064 * @return true if request should proceed, false otherwise. 2065 */ 2066 boolean requestLayoutDuringLayout(final View view) { 2067 if (view.mParent == null || view.mAttachInfo == null) { 2068 // Would not normally trigger another layout, so just let it pass through as usual 2069 return true; 2070 } 2071 if (!mLayoutRequesters.contains(view)) { 2072 mLayoutRequesters.add(view); 2073 } 2074 if (!mHandlingLayoutInLayoutRequest) { 2075 // Let the request proceed normally; it will be processed in a second layout pass 2076 // if necessary 2077 return true; 2078 } else { 2079 // Don't let the request proceed during the second layout pass. 2080 // It will post to the next frame instead. 2081 return false; 2082 } 2083 } 2084 2085 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2086 int desiredWindowHeight) { 2087 mLayoutRequested = false; 2088 mScrollMayChange = true; 2089 mInLayout = true; 2090 2091 final View host = mView; 2092 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2093 Log.v(TAG, "Laying out " + host + " to (" + 2094 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2095 } 2096 2097 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2098 try { 2099 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2100 2101 mInLayout = false; 2102 int numViewsRequestingLayout = mLayoutRequesters.size(); 2103 if (numViewsRequestingLayout > 0) { 2104 // requestLayout() was called during layout. 2105 // If no layout-request flags are set on the requesting views, there is no problem. 2106 // If some requests are still pending, then we need to clear those flags and do 2107 // a full request/measure/layout pass to handle this situation. 2108 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2109 false); 2110 if (validLayoutRequesters != null) { 2111 // Set this flag to indicate that any further requests are happening during 2112 // the second pass, which may result in posting those requests to the next 2113 // frame instead 2114 mHandlingLayoutInLayoutRequest = true; 2115 2116 // Process fresh layout requests, then measure and layout 2117 int numValidRequests = validLayoutRequesters.size(); 2118 for (int i = 0; i < numValidRequests; ++i) { 2119 final View view = validLayoutRequesters.get(i); 2120 Log.w("View", "requestLayout() improperly called by " + view + 2121 " during layout: running second layout pass"); 2122 view.requestLayout(); 2123 } 2124 measureHierarchy(host, lp, mView.getContext().getResources(), 2125 desiredWindowWidth, desiredWindowHeight); 2126 mInLayout = true; 2127 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2128 2129 mHandlingLayoutInLayoutRequest = false; 2130 2131 // Check the valid requests again, this time without checking/clearing the 2132 // layout flags, since requests happening during the second pass get noop'd 2133 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2134 if (validLayoutRequesters != null) { 2135 final ArrayList<View> finalRequesters = validLayoutRequesters; 2136 // Post second-pass requests to the next frame 2137 getRunQueue().post(new Runnable() { 2138 @Override 2139 public void run() { 2140 int numValidRequests = finalRequesters.size(); 2141 for (int i = 0; i < numValidRequests; ++i) { 2142 final View view = finalRequesters.get(i); 2143 Log.w("View", "requestLayout() improperly called by " + view + 2144 " during second layout pass: posting in next frame"); 2145 view.requestLayout(); 2146 } 2147 } 2148 }); 2149 } 2150 } 2151 2152 } 2153 } finally { 2154 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2155 } 2156 mInLayout = false; 2157 } 2158 2159 /** 2160 * This method is called during layout when there have been calls to requestLayout() during 2161 * layout. It walks through the list of views that requested layout to determine which ones 2162 * still need it, based on visibility in the hierarchy and whether they have already been 2163 * handled (as is usually the case with ListView children). 2164 * 2165 * @param layoutRequesters The list of views that requested layout during layout 2166 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2167 * If so, the FORCE_LAYOUT flag was not set on requesters. 2168 * @return A list of the actual views that still need to be laid out. 2169 */ 2170 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2171 boolean secondLayoutRequests) { 2172 2173 int numViewsRequestingLayout = layoutRequesters.size(); 2174 ArrayList<View> validLayoutRequesters = null; 2175 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2176 View view = layoutRequesters.get(i); 2177 if (view != null && view.mAttachInfo != null && view.mParent != null && 2178 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2179 View.PFLAG_FORCE_LAYOUT)) { 2180 boolean gone = false; 2181 View parent = view; 2182 // Only trigger new requests for views in a non-GONE hierarchy 2183 while (parent != null) { 2184 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2185 gone = true; 2186 break; 2187 } 2188 if (parent.mParent instanceof View) { 2189 parent = (View) parent.mParent; 2190 } else { 2191 parent = null; 2192 } 2193 } 2194 if (!gone) { 2195 if (validLayoutRequesters == null) { 2196 validLayoutRequesters = new ArrayList<View>(); 2197 } 2198 validLayoutRequesters.add(view); 2199 } 2200 } 2201 } 2202 if (!secondLayoutRequests) { 2203 // If we're checking the layout flags, then we need to clean them up also 2204 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2205 View view = layoutRequesters.get(i); 2206 while (view != null && 2207 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2208 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2209 if (view.mParent instanceof View) { 2210 view = (View) view.mParent; 2211 } else { 2212 view = null; 2213 } 2214 } 2215 } 2216 } 2217 layoutRequesters.clear(); 2218 return validLayoutRequesters; 2219 } 2220 2221 @Override 2222 public void requestTransparentRegion(View child) { 2223 // the test below should not fail unless someone is messing with us 2224 checkThread(); 2225 if (mView == child) { 2226 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2227 // Need to make sure we re-evaluate the window attributes next 2228 // time around, to ensure the window has the correct format. 2229 mWindowAttributesChanged = true; 2230 mWindowAttributesChangesFlag = 0; 2231 requestLayout(); 2232 } 2233 } 2234 2235 /** 2236 * Figures out the measure spec for the root view in a window based on it's 2237 * layout params. 2238 * 2239 * @param windowSize 2240 * The available width or height of the window 2241 * 2242 * @param rootDimension 2243 * The layout params for one dimension (width or height) of the 2244 * window. 2245 * 2246 * @return The measure spec to use to measure the root view. 2247 */ 2248 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2249 int measureSpec; 2250 switch (rootDimension) { 2251 2252 case ViewGroup.LayoutParams.MATCH_PARENT: 2253 // Window can't resize. Force root view to be windowSize. 2254 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2255 break; 2256 case ViewGroup.LayoutParams.WRAP_CONTENT: 2257 // Window can resize. Set max size for root view. 2258 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2259 break; 2260 default: 2261 // Window wants to be an exact size. Force root view to be that size. 2262 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2263 break; 2264 } 2265 return measureSpec; 2266 } 2267 2268 int mHardwareXOffset; 2269 int mHardwareYOffset; 2270 int mResizeAlpha; 2271 final Paint mResizePaint = new Paint(); 2272 2273 @Override 2274 public void onHardwarePreDraw(HardwareCanvas canvas) { 2275 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2276 } 2277 2278 @Override 2279 public void onHardwarePostDraw(HardwareCanvas canvas) { 2280 if (mResizeBuffer != null) { 2281 mResizePaint.setAlpha(mResizeAlpha); 2282 canvas.drawHardwareLayer(mResizeBuffer, mHardwareXOffset, mHardwareYOffset, 2283 mResizePaint); 2284 } 2285 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2286 } 2287 2288 /** 2289 * @hide 2290 */ 2291 void outputDisplayList(View view) { 2292 RenderNode renderNode = view.getDisplayList(); 2293 if (renderNode != null) { 2294 renderNode.output(); 2295 } 2296 } 2297 2298 /** 2299 * @see #PROPERTY_PROFILE_RENDERING 2300 */ 2301 private void profileRendering(boolean enabled) { 2302 if (mProfileRendering) { 2303 mRenderProfilingEnabled = enabled; 2304 2305 if (mRenderProfiler != null) { 2306 mChoreographer.removeFrameCallback(mRenderProfiler); 2307 } 2308 if (mRenderProfilingEnabled) { 2309 if (mRenderProfiler == null) { 2310 mRenderProfiler = new Choreographer.FrameCallback() { 2311 @Override 2312 public void doFrame(long frameTimeNanos) { 2313 mDirty.set(0, 0, mWidth, mHeight); 2314 scheduleTraversals(); 2315 if (mRenderProfilingEnabled) { 2316 mChoreographer.postFrameCallback(mRenderProfiler); 2317 } 2318 } 2319 }; 2320 } 2321 mChoreographer.postFrameCallback(mRenderProfiler); 2322 } else { 2323 mRenderProfiler = null; 2324 } 2325 } 2326 } 2327 2328 /** 2329 * Called from draw() when DEBUG_FPS is enabled 2330 */ 2331 private void trackFPS() { 2332 // Tracks frames per second drawn. First value in a series of draws may be bogus 2333 // because it down not account for the intervening idle time 2334 long nowTime = System.currentTimeMillis(); 2335 if (mFpsStartTime < 0) { 2336 mFpsStartTime = mFpsPrevTime = nowTime; 2337 mFpsNumFrames = 0; 2338 } else { 2339 ++mFpsNumFrames; 2340 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2341 long frameTime = nowTime - mFpsPrevTime; 2342 long totalTime = nowTime - mFpsStartTime; 2343 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2344 mFpsPrevTime = nowTime; 2345 if (totalTime > 1000) { 2346 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2347 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2348 mFpsStartTime = nowTime; 2349 mFpsNumFrames = 0; 2350 } 2351 } 2352 } 2353 2354 private void performDraw() { 2355 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2356 return; 2357 } 2358 2359 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2360 mFullRedrawNeeded = false; 2361 2362 mIsDrawing = true; 2363 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2364 try { 2365 draw(fullRedrawNeeded); 2366 } finally { 2367 mIsDrawing = false; 2368 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2369 } 2370 2371 // For whatever reason we didn't create a HardwareRenderer, end any 2372 // hardware animations that are now dangling 2373 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2374 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2375 for (int i = 0; i < count; i++) { 2376 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2377 } 2378 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2379 } 2380 2381 if (mReportNextDraw) { 2382 mReportNextDraw = false; 2383 if (mAttachInfo.mHardwareRenderer != null) { 2384 mAttachInfo.mHardwareRenderer.fence(); 2385 } 2386 2387 if (LOCAL_LOGV) { 2388 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2389 } 2390 if (mSurfaceHolder != null && mSurface.isValid()) { 2391 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2392 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2393 if (callbacks != null) { 2394 for (SurfaceHolder.Callback c : callbacks) { 2395 if (c instanceof SurfaceHolder.Callback2) { 2396 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2397 mSurfaceHolder); 2398 } 2399 } 2400 } 2401 } 2402 try { 2403 mWindowSession.finishDrawing(mWindow); 2404 } catch (RemoteException e) { 2405 } 2406 } 2407 } 2408 2409 private void draw(boolean fullRedrawNeeded) { 2410 Surface surface = mSurface; 2411 if (!surface.isValid()) { 2412 return; 2413 } 2414 2415 if (DEBUG_FPS) { 2416 trackFPS(); 2417 } 2418 2419 if (!sFirstDrawComplete) { 2420 synchronized (sFirstDrawHandlers) { 2421 sFirstDrawComplete = true; 2422 final int count = sFirstDrawHandlers.size(); 2423 for (int i = 0; i< count; i++) { 2424 mHandler.post(sFirstDrawHandlers.get(i)); 2425 } 2426 } 2427 } 2428 2429 scrollToRectOrFocus(null, false); 2430 2431 if (mAttachInfo.mViewScrollChanged) { 2432 mAttachInfo.mViewScrollChanged = false; 2433 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2434 } 2435 2436 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2437 final int curScrollY; 2438 if (animating) { 2439 curScrollY = mScroller.getCurrY(); 2440 } else { 2441 curScrollY = mScrollY; 2442 } 2443 if (mCurScrollY != curScrollY) { 2444 mCurScrollY = curScrollY; 2445 fullRedrawNeeded = true; 2446 if (mView instanceof RootViewSurfaceTaker) { 2447 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2448 } 2449 } 2450 2451 final float appScale = mAttachInfo.mApplicationScale; 2452 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2453 2454 int resizeAlpha = 0; 2455 if (mResizeBuffer != null) { 2456 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2457 if (deltaTime < mResizeBufferDuration) { 2458 float amt = deltaTime/(float) mResizeBufferDuration; 2459 amt = mResizeInterpolator.getInterpolation(amt); 2460 animating = true; 2461 resizeAlpha = 255 - (int)(amt*255); 2462 } else { 2463 disposeResizeBuffer(); 2464 } 2465 } 2466 2467 final Rect dirty = mDirty; 2468 if (mSurfaceHolder != null) { 2469 // The app owns the surface, we won't draw. 2470 dirty.setEmpty(); 2471 if (animating) { 2472 if (mScroller != null) { 2473 mScroller.abortAnimation(); 2474 } 2475 disposeResizeBuffer(); 2476 } 2477 return; 2478 } 2479 2480 if (fullRedrawNeeded) { 2481 mAttachInfo.mIgnoreDirtyState = true; 2482 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2483 } 2484 2485 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2486 Log.v(TAG, "Draw " + mView + "/" 2487 + mWindowAttributes.getTitle() 2488 + ": dirty={" + dirty.left + "," + dirty.top 2489 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2490 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2491 appScale + ", width=" + mWidth + ", height=" + mHeight); 2492 } 2493 2494 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2495 2496 int xOffset = 0; 2497 int yOffset = curScrollY; 2498 final WindowManager.LayoutParams params = mWindowAttributes; 2499 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2500 if (surfaceInsets != null) { 2501 xOffset -= surfaceInsets.left; 2502 yOffset -= surfaceInsets.top; 2503 2504 // Offset dirty rect for surface insets. 2505 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2506 } 2507 2508 boolean accessibilityFocusDirty = false; 2509 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2510 if (drawable != null) { 2511 final Rect bounds = mAttachInfo.mTmpInvalRect; 2512 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2513 if (!hasFocus) { 2514 bounds.setEmpty(); 2515 } 2516 if (!bounds.equals(drawable.getBounds())) { 2517 accessibilityFocusDirty = true; 2518 } 2519 } 2520 2521 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2522 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2523 // If accessibility focus moved, always invalidate the root. 2524 boolean invalidateRoot = accessibilityFocusDirty; 2525 2526 // Draw with hardware renderer. 2527 mIsAnimating = false; 2528 2529 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2530 mHardwareYOffset = yOffset; 2531 mHardwareXOffset = xOffset; 2532 invalidateRoot = true; 2533 } 2534 mResizeAlpha = resizeAlpha; 2535 2536 if (invalidateRoot) { 2537 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2538 } 2539 2540 dirty.setEmpty(); 2541 2542 mBlockResizeBuffer = false; 2543 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2544 } else { 2545 // If we get here with a disabled & requested hardware renderer, something went 2546 // wrong (an invalidate posted right before we destroyed the hardware surface 2547 // for instance) so we should just bail out. Locking the surface with software 2548 // rendering at this point would lock it forever and prevent hardware renderer 2549 // from doing its job when it comes back. 2550 // Before we request a new frame we must however attempt to reinitiliaze the 2551 // hardware renderer if it's in requested state. This would happen after an 2552 // eglTerminate() for instance. 2553 if (mAttachInfo.mHardwareRenderer != null && 2554 !mAttachInfo.mHardwareRenderer.isEnabled() && 2555 mAttachInfo.mHardwareRenderer.isRequested()) { 2556 2557 try { 2558 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2559 mWidth, mHeight, mSurface, surfaceInsets); 2560 } catch (OutOfResourcesException e) { 2561 handleOutOfResourcesException(e); 2562 return; 2563 } 2564 2565 mFullRedrawNeeded = true; 2566 scheduleTraversals(); 2567 return; 2568 } 2569 2570 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2571 return; 2572 } 2573 } 2574 } 2575 2576 if (animating) { 2577 mFullRedrawNeeded = true; 2578 scheduleTraversals(); 2579 } 2580 } 2581 2582 /** 2583 * @return true if drawing was successful, false if an error occurred 2584 */ 2585 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2586 boolean scalingRequired, Rect dirty) { 2587 2588 // Draw with software renderer. 2589 final Canvas canvas; 2590 try { 2591 final int left = dirty.left; 2592 final int top = dirty.top; 2593 final int right = dirty.right; 2594 final int bottom = dirty.bottom; 2595 2596 canvas = mSurface.lockCanvas(dirty); 2597 2598 // The dirty rectangle can be modified by Surface.lockCanvas() 2599 //noinspection ConstantConditions 2600 if (left != dirty.left || top != dirty.top || right != dirty.right 2601 || bottom != dirty.bottom) { 2602 attachInfo.mIgnoreDirtyState = true; 2603 } 2604 2605 // TODO: Do this in native 2606 canvas.setDensity(mDensity); 2607 } catch (Surface.OutOfResourcesException e) { 2608 handleOutOfResourcesException(e); 2609 return false; 2610 } catch (IllegalArgumentException e) { 2611 Log.e(TAG, "Could not lock surface", e); 2612 // Don't assume this is due to out of memory, it could be 2613 // something else, and if it is something else then we could 2614 // kill stuff (or ourself) for no reason. 2615 mLayoutRequested = true; // ask wm for a new surface next time. 2616 return false; 2617 } 2618 2619 try { 2620 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2621 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2622 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2623 //canvas.drawARGB(255, 255, 0, 0); 2624 } 2625 2626 // If this bitmap's format includes an alpha channel, we 2627 // need to clear it before drawing so that the child will 2628 // properly re-composite its drawing on a transparent 2629 // background. This automatically respects the clip/dirty region 2630 // or 2631 // If we are applying an offset, we need to clear the area 2632 // where the offset doesn't appear to avoid having garbage 2633 // left in the blank areas. 2634 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2635 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2636 } 2637 2638 dirty.setEmpty(); 2639 mIsAnimating = false; 2640 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2641 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2642 2643 if (DEBUG_DRAW) { 2644 Context cxt = mView.getContext(); 2645 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2646 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2647 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2648 } 2649 try { 2650 canvas.translate(-xoff, -yoff); 2651 if (mTranslator != null) { 2652 mTranslator.translateCanvas(canvas); 2653 } 2654 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2655 attachInfo.mSetIgnoreDirtyState = false; 2656 2657 mView.draw(canvas); 2658 2659 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2660 } finally { 2661 if (!attachInfo.mSetIgnoreDirtyState) { 2662 // Only clear the flag if it was not set during the mView.draw() call 2663 attachInfo.mIgnoreDirtyState = false; 2664 } 2665 } 2666 } finally { 2667 try { 2668 surface.unlockCanvasAndPost(canvas); 2669 } catch (IllegalArgumentException e) { 2670 Log.e(TAG, "Could not unlock surface", e); 2671 mLayoutRequested = true; // ask wm for a new surface next time. 2672 //noinspection ReturnInsideFinallyBlock 2673 return false; 2674 } 2675 2676 if (LOCAL_LOGV) { 2677 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2678 } 2679 } 2680 return true; 2681 } 2682 2683 /** 2684 * We want to draw a highlight around the current accessibility focused. 2685 * Since adding a style for all possible view is not a viable option we 2686 * have this specialized drawing method. 2687 * 2688 * Note: We are doing this here to be able to draw the highlight for 2689 * virtual views in addition to real ones. 2690 * 2691 * @param canvas The canvas on which to draw. 2692 */ 2693 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2694 final Rect bounds = mAttachInfo.mTmpInvalRect; 2695 if (getAccessibilityFocusedRect(bounds)) { 2696 final Drawable drawable = getAccessibilityFocusedDrawable(); 2697 if (drawable != null) { 2698 drawable.setBounds(bounds); 2699 drawable.draw(canvas); 2700 } 2701 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2702 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2703 } 2704 } 2705 2706 private boolean getAccessibilityFocusedRect(Rect bounds) { 2707 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2708 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2709 return false; 2710 } 2711 2712 final View host = mAccessibilityFocusedHost; 2713 if (host == null || host.mAttachInfo == null) { 2714 return false; 2715 } 2716 2717 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2718 if (provider == null) { 2719 host.getBoundsOnScreen(bounds, true); 2720 } else if (mAccessibilityFocusedVirtualView != null) { 2721 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2722 } else { 2723 return false; 2724 } 2725 2726 final AttachInfo attachInfo = mAttachInfo; 2727 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2728 bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, attachInfo.mViewRootImpl.mHeight); 2729 return !bounds.isEmpty(); 2730 } 2731 2732 private Drawable getAccessibilityFocusedDrawable() { 2733 // Lazily load the accessibility focus drawable. 2734 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2735 final TypedValue value = new TypedValue(); 2736 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2737 R.attr.accessibilityFocusedDrawable, value, true); 2738 if (resolved) { 2739 mAttachInfo.mAccessibilityFocusDrawable = 2740 mView.mContext.getDrawable(value.resourceId); 2741 } 2742 } 2743 return mAttachInfo.mAccessibilityFocusDrawable; 2744 } 2745 2746 /** 2747 * @hide 2748 */ 2749 public void setDrawDuringWindowsAnimating(boolean value) { 2750 mDrawDuringWindowsAnimating = value; 2751 if (value) { 2752 handleDispatchDoneAnimating(); 2753 } 2754 } 2755 2756 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2757 final Rect ci = mAttachInfo.mContentInsets; 2758 final Rect vi = mAttachInfo.mVisibleInsets; 2759 int scrollY = 0; 2760 boolean handled = false; 2761 2762 if (vi.left > ci.left || vi.top > ci.top 2763 || vi.right > ci.right || vi.bottom > ci.bottom) { 2764 // We'll assume that we aren't going to change the scroll 2765 // offset, since we want to avoid that unless it is actually 2766 // going to make the focus visible... otherwise we scroll 2767 // all over the place. 2768 scrollY = mScrollY; 2769 // We can be called for two different situations: during a draw, 2770 // to update the scroll position if the focus has changed (in which 2771 // case 'rectangle' is null), or in response to a 2772 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2773 // is non-null and we just want to scroll to whatever that 2774 // rectangle is). 2775 final View focus = mView.findFocus(); 2776 if (focus == null) { 2777 return false; 2778 } 2779 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2780 if (focus != lastScrolledFocus) { 2781 // If the focus has changed, then ignore any requests to scroll 2782 // to a rectangle; first we want to make sure the entire focus 2783 // view is visible. 2784 rectangle = null; 2785 } 2786 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2787 + " rectangle=" + rectangle + " ci=" + ci 2788 + " vi=" + vi); 2789 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2790 // Optimization: if the focus hasn't changed since last 2791 // time, and no layout has happened, then just leave things 2792 // as they are. 2793 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2794 + mScrollY + " vi=" + vi.toShortString()); 2795 } else { 2796 // We need to determine if the currently focused view is 2797 // within the visible part of the window and, if not, apply 2798 // a pan so it can be seen. 2799 mLastScrolledFocus = new WeakReference<View>(focus); 2800 mScrollMayChange = false; 2801 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2802 // Try to find the rectangle from the focus view. 2803 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2804 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2805 + mView.getWidth() + " h=" + mView.getHeight() 2806 + " ci=" + ci.toShortString() 2807 + " vi=" + vi.toShortString()); 2808 if (rectangle == null) { 2809 focus.getFocusedRect(mTempRect); 2810 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2811 + ": focusRect=" + mTempRect.toShortString()); 2812 if (mView instanceof ViewGroup) { 2813 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2814 focus, mTempRect); 2815 } 2816 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2817 "Focus in window: focusRect=" 2818 + mTempRect.toShortString() 2819 + " visRect=" + mVisRect.toShortString()); 2820 } else { 2821 mTempRect.set(rectangle); 2822 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2823 "Request scroll to rect: " 2824 + mTempRect.toShortString() 2825 + " visRect=" + mVisRect.toShortString()); 2826 } 2827 if (mTempRect.intersect(mVisRect)) { 2828 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2829 "Focus window visible rect: " 2830 + mTempRect.toShortString()); 2831 if (mTempRect.height() > 2832 (mView.getHeight()-vi.top-vi.bottom)) { 2833 // If the focus simply is not going to fit, then 2834 // best is probably just to leave things as-is. 2835 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2836 "Too tall; leaving scrollY=" + scrollY); 2837 } else if ((mTempRect.top-scrollY) < vi.top) { 2838 scrollY -= vi.top - (mTempRect.top-scrollY); 2839 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2840 "Top covered; scrollY=" + scrollY); 2841 } else if ((mTempRect.bottom-scrollY) 2842 > (mView.getHeight()-vi.bottom)) { 2843 scrollY += (mTempRect.bottom-scrollY) 2844 - (mView.getHeight()-vi.bottom); 2845 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2846 "Bottom covered; scrollY=" + scrollY); 2847 } 2848 handled = true; 2849 } 2850 } 2851 } 2852 } 2853 2854 if (scrollY != mScrollY) { 2855 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2856 + mScrollY + " , new=" + scrollY); 2857 if (!immediate && mResizeBuffer == null) { 2858 if (mScroller == null) { 2859 mScroller = new Scroller(mView.getContext()); 2860 } 2861 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2862 } else if (mScroller != null) { 2863 mScroller.abortAnimation(); 2864 } 2865 mScrollY = scrollY; 2866 } 2867 2868 return handled; 2869 } 2870 2871 /** 2872 * @hide 2873 */ 2874 public View getAccessibilityFocusedHost() { 2875 return mAccessibilityFocusedHost; 2876 } 2877 2878 /** 2879 * @hide 2880 */ 2881 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2882 return mAccessibilityFocusedVirtualView; 2883 } 2884 2885 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2886 // If we have a virtual view with accessibility focus we need 2887 // to clear the focus and invalidate the virtual view bounds. 2888 if (mAccessibilityFocusedVirtualView != null) { 2889 2890 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2891 View focusHost = mAccessibilityFocusedHost; 2892 2893 // Wipe the state of the current accessibility focus since 2894 // the call into the provider to clear accessibility focus 2895 // will fire an accessibility event which will end up calling 2896 // this method and we want to have clean state when this 2897 // invocation happens. 2898 mAccessibilityFocusedHost = null; 2899 mAccessibilityFocusedVirtualView = null; 2900 2901 // Clear accessibility focus on the host after clearing state since 2902 // this method may be reentrant. 2903 focusHost.clearAccessibilityFocusNoCallbacks(); 2904 2905 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2906 if (provider != null) { 2907 // Invalidate the area of the cleared accessibility focus. 2908 focusNode.getBoundsInParent(mTempRect); 2909 focusHost.invalidate(mTempRect); 2910 // Clear accessibility focus in the virtual node. 2911 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2912 focusNode.getSourceNodeId()); 2913 provider.performAction(virtualNodeId, 2914 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2915 } 2916 focusNode.recycle(); 2917 } 2918 if (mAccessibilityFocusedHost != null) { 2919 // Clear accessibility focus in the view. 2920 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2921 } 2922 2923 // Set the new focus host and node. 2924 mAccessibilityFocusedHost = view; 2925 mAccessibilityFocusedVirtualView = node; 2926 2927 if (mAttachInfo.mHardwareRenderer != null) { 2928 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2929 } 2930 } 2931 2932 @Override 2933 public void requestChildFocus(View child, View focused) { 2934 if (DEBUG_INPUT_RESIZE) { 2935 Log.v(TAG, "Request child focus: focus now " + focused); 2936 } 2937 checkThread(); 2938 scheduleTraversals(); 2939 } 2940 2941 @Override 2942 public void clearChildFocus(View child) { 2943 if (DEBUG_INPUT_RESIZE) { 2944 Log.v(TAG, "Clearing child focus"); 2945 } 2946 checkThread(); 2947 scheduleTraversals(); 2948 } 2949 2950 @Override 2951 public ViewParent getParentForAccessibility() { 2952 return null; 2953 } 2954 2955 @Override 2956 public void focusableViewAvailable(View v) { 2957 checkThread(); 2958 if (mView != null) { 2959 if (!mView.hasFocus()) { 2960 v.requestFocus(); 2961 } else { 2962 // the one case where will transfer focus away from the current one 2963 // is if the current view is a view group that prefers to give focus 2964 // to its children first AND the view is a descendant of it. 2965 View focused = mView.findFocus(); 2966 if (focused instanceof ViewGroup) { 2967 ViewGroup group = (ViewGroup) focused; 2968 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2969 && isViewDescendantOf(v, focused)) { 2970 v.requestFocus(); 2971 } 2972 } 2973 } 2974 } 2975 } 2976 2977 @Override 2978 public void recomputeViewAttributes(View child) { 2979 checkThread(); 2980 if (mView == child) { 2981 mAttachInfo.mRecomputeGlobalAttributes = true; 2982 if (!mWillDrawSoon) { 2983 scheduleTraversals(); 2984 } 2985 } 2986 } 2987 2988 void dispatchDetachedFromWindow() { 2989 if (mView != null && mView.mAttachInfo != null) { 2990 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2991 mView.dispatchDetachedFromWindow(); 2992 } 2993 2994 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2995 mAccessibilityManager.removeAccessibilityStateChangeListener( 2996 mAccessibilityInteractionConnectionManager); 2997 mAccessibilityManager.removeHighTextContrastStateChangeListener( 2998 mHighContrastTextManager); 2999 removeSendWindowContentChangedCallback(); 3000 3001 destroyHardwareRenderer(); 3002 3003 setAccessibilityFocus(null, null); 3004 3005 mView.assignParent(null); 3006 mView = null; 3007 mAttachInfo.mRootView = null; 3008 3009 mSurface.release(); 3010 3011 if (mInputQueueCallback != null && mInputQueue != null) { 3012 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 3013 mInputQueue.dispose(); 3014 mInputQueueCallback = null; 3015 mInputQueue = null; 3016 } 3017 if (mInputEventReceiver != null) { 3018 mInputEventReceiver.dispose(); 3019 mInputEventReceiver = null; 3020 } 3021 try { 3022 mWindowSession.remove(mWindow); 3023 } catch (RemoteException e) { 3024 } 3025 3026 // Dispose the input channel after removing the window so the Window Manager 3027 // doesn't interpret the input channel being closed as an abnormal termination. 3028 if (mInputChannel != null) { 3029 mInputChannel.dispose(); 3030 mInputChannel = null; 3031 } 3032 3033 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3034 3035 unscheduleTraversals(); 3036 } 3037 3038 void updateConfiguration(Configuration config, boolean force) { 3039 if (DEBUG_CONFIGURATION) Log.v(TAG, 3040 "Applying new config to window " 3041 + mWindowAttributes.getTitle() 3042 + ": " + config); 3043 3044 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3045 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3046 config = new Configuration(config); 3047 ci.applyToConfiguration(mNoncompatDensity, config); 3048 } 3049 3050 synchronized (sConfigCallbacks) { 3051 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3052 sConfigCallbacks.get(i).onConfigurationChanged(config); 3053 } 3054 } 3055 if (mView != null) { 3056 // At this point the resources have been updated to 3057 // have the most recent config, whatever that is. Use 3058 // the one in them which may be newer. 3059 config = mView.getResources().getConfiguration(); 3060 if (force || mLastConfiguration.diff(config) != 0) { 3061 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3062 final int currentLayoutDirection = config.getLayoutDirection(); 3063 mLastConfiguration.setTo(config); 3064 if (lastLayoutDirection != currentLayoutDirection && 3065 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3066 mView.setLayoutDirection(currentLayoutDirection); 3067 } 3068 mView.dispatchConfigurationChanged(config); 3069 } 3070 } 3071 } 3072 3073 /** 3074 * Return true if child is an ancestor of parent, (or equal to the parent). 3075 */ 3076 public static boolean isViewDescendantOf(View child, View parent) { 3077 if (child == parent) { 3078 return true; 3079 } 3080 3081 final ViewParent theParent = child.getParent(); 3082 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3083 } 3084 3085 private static void forceLayout(View view) { 3086 view.forceLayout(); 3087 if (view instanceof ViewGroup) { 3088 ViewGroup group = (ViewGroup) view; 3089 final int count = group.getChildCount(); 3090 for (int i = 0; i < count; i++) { 3091 forceLayout(group.getChildAt(i)); 3092 } 3093 } 3094 } 3095 3096 private final static int MSG_INVALIDATE = 1; 3097 private final static int MSG_INVALIDATE_RECT = 2; 3098 private final static int MSG_DIE = 3; 3099 private final static int MSG_RESIZED = 4; 3100 private final static int MSG_RESIZED_REPORT = 5; 3101 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3102 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3103 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3104 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3105 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3106 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 3107 private final static int MSG_CHECK_FOCUS = 13; 3108 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3109 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3110 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3111 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3112 private final static int MSG_UPDATE_CONFIGURATION = 18; 3113 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3114 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3115 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 3116 private final static int MSG_INVALIDATE_WORLD = 23; 3117 private final static int MSG_WINDOW_MOVED = 24; 3118 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 25; 3119 private final static int MSG_DISPATCH_WINDOW_SHOWN = 26; 3120 3121 final class ViewRootHandler extends Handler { 3122 @Override 3123 public String getMessageName(Message message) { 3124 switch (message.what) { 3125 case MSG_INVALIDATE: 3126 return "MSG_INVALIDATE"; 3127 case MSG_INVALIDATE_RECT: 3128 return "MSG_INVALIDATE_RECT"; 3129 case MSG_DIE: 3130 return "MSG_DIE"; 3131 case MSG_RESIZED: 3132 return "MSG_RESIZED"; 3133 case MSG_RESIZED_REPORT: 3134 return "MSG_RESIZED_REPORT"; 3135 case MSG_WINDOW_FOCUS_CHANGED: 3136 return "MSG_WINDOW_FOCUS_CHANGED"; 3137 case MSG_DISPATCH_INPUT_EVENT: 3138 return "MSG_DISPATCH_INPUT_EVENT"; 3139 case MSG_DISPATCH_APP_VISIBILITY: 3140 return "MSG_DISPATCH_APP_VISIBILITY"; 3141 case MSG_DISPATCH_GET_NEW_SURFACE: 3142 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3143 case MSG_DISPATCH_KEY_FROM_IME: 3144 return "MSG_DISPATCH_KEY_FROM_IME"; 3145 case MSG_FINISH_INPUT_CONNECTION: 3146 return "MSG_FINISH_INPUT_CONNECTION"; 3147 case MSG_CHECK_FOCUS: 3148 return "MSG_CHECK_FOCUS"; 3149 case MSG_CLOSE_SYSTEM_DIALOGS: 3150 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3151 case MSG_DISPATCH_DRAG_EVENT: 3152 return "MSG_DISPATCH_DRAG_EVENT"; 3153 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3154 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3155 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3156 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3157 case MSG_UPDATE_CONFIGURATION: 3158 return "MSG_UPDATE_CONFIGURATION"; 3159 case MSG_PROCESS_INPUT_EVENTS: 3160 return "MSG_PROCESS_INPUT_EVENTS"; 3161 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3162 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3163 case MSG_DISPATCH_DONE_ANIMATING: 3164 return "MSG_DISPATCH_DONE_ANIMATING"; 3165 case MSG_WINDOW_MOVED: 3166 return "MSG_WINDOW_MOVED"; 3167 case MSG_SYNTHESIZE_INPUT_EVENT: 3168 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3169 case MSG_DISPATCH_WINDOW_SHOWN: 3170 return "MSG_DISPATCH_WINDOW_SHOWN"; 3171 } 3172 return super.getMessageName(message); 3173 } 3174 3175 @Override 3176 public void handleMessage(Message msg) { 3177 switch (msg.what) { 3178 case MSG_INVALIDATE: 3179 ((View) msg.obj).invalidate(); 3180 break; 3181 case MSG_INVALIDATE_RECT: 3182 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3183 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3184 info.recycle(); 3185 break; 3186 case MSG_PROCESS_INPUT_EVENTS: 3187 mProcessInputEventsScheduled = false; 3188 doProcessInputEvents(); 3189 break; 3190 case MSG_DISPATCH_APP_VISIBILITY: 3191 handleAppVisibility(msg.arg1 != 0); 3192 break; 3193 case MSG_DISPATCH_GET_NEW_SURFACE: 3194 handleGetNewSurface(); 3195 break; 3196 case MSG_RESIZED: { 3197 // Recycled in the fall through... 3198 SomeArgs args = (SomeArgs) msg.obj; 3199 if (mWinFrame.equals(args.arg1) 3200 && mPendingOverscanInsets.equals(args.arg5) 3201 && mPendingContentInsets.equals(args.arg2) 3202 && mPendingStableInsets.equals(args.arg6) 3203 && mPendingVisibleInsets.equals(args.arg3) 3204 && args.arg4 == null) { 3205 break; 3206 } 3207 } // fall through... 3208 case MSG_RESIZED_REPORT: 3209 if (mAdded) { 3210 SomeArgs args = (SomeArgs) msg.obj; 3211 3212 Configuration config = (Configuration) args.arg4; 3213 if (config != null) { 3214 updateConfiguration(config, false); 3215 } 3216 3217 mWinFrame.set((Rect) args.arg1); 3218 mPendingOverscanInsets.set((Rect) args.arg5); 3219 mPendingContentInsets.set((Rect) args.arg2); 3220 mPendingStableInsets.set((Rect) args.arg6); 3221 mPendingVisibleInsets.set((Rect) args.arg3); 3222 3223 args.recycle(); 3224 3225 if (msg.what == MSG_RESIZED_REPORT) { 3226 mReportNextDraw = true; 3227 } 3228 3229 if (mView != null) { 3230 forceLayout(mView); 3231 } 3232 3233 requestLayout(); 3234 } 3235 break; 3236 case MSG_WINDOW_MOVED: 3237 if (mAdded) { 3238 final int w = mWinFrame.width(); 3239 final int h = mWinFrame.height(); 3240 final int l = msg.arg1; 3241 final int t = msg.arg2; 3242 mWinFrame.left = l; 3243 mWinFrame.right = l + w; 3244 mWinFrame.top = t; 3245 mWinFrame.bottom = t + h; 3246 3247 if (mView != null) { 3248 forceLayout(mView); 3249 } 3250 requestLayout(); 3251 } 3252 break; 3253 case MSG_WINDOW_FOCUS_CHANGED: { 3254 if (mAdded) { 3255 boolean hasWindowFocus = msg.arg1 != 0; 3256 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3257 3258 profileRendering(hasWindowFocus); 3259 3260 if (hasWindowFocus) { 3261 boolean inTouchMode = msg.arg2 != 0; 3262 ensureTouchModeLocally(inTouchMode); 3263 3264 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3265 mFullRedrawNeeded = true; 3266 try { 3267 final WindowManager.LayoutParams lp = mWindowAttributes; 3268 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3269 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3270 mWidth, mHeight, mSurface, surfaceInsets); 3271 } catch (OutOfResourcesException e) { 3272 Log.e(TAG, "OutOfResourcesException locking surface", e); 3273 try { 3274 if (!mWindowSession.outOfMemory(mWindow)) { 3275 Slog.w(TAG, "No processes killed for memory; killing self"); 3276 Process.killProcess(Process.myPid()); 3277 } 3278 } catch (RemoteException ex) { 3279 } 3280 // Retry in a bit. 3281 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3282 return; 3283 } 3284 } 3285 } 3286 3287 mLastWasImTarget = WindowManager.LayoutParams 3288 .mayUseInputMethod(mWindowAttributes.flags); 3289 3290 InputMethodManager imm = InputMethodManager.peekInstance(); 3291 if (mView != null) { 3292 if (hasWindowFocus && imm != null && mLastWasImTarget && 3293 !isInLocalFocusMode()) { 3294 imm.startGettingWindowFocus(mView); 3295 } 3296 mAttachInfo.mKeyDispatchState.reset(); 3297 mView.dispatchWindowFocusChanged(hasWindowFocus); 3298 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3299 } 3300 3301 // Note: must be done after the focus change callbacks, 3302 // so all of the view state is set up correctly. 3303 if (hasWindowFocus) { 3304 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3305 imm.onWindowFocus(mView, mView.findFocus(), 3306 mWindowAttributes.softInputMode, 3307 !mHasHadWindowFocus, mWindowAttributes.flags); 3308 } 3309 // Clear the forward bit. We can just do this directly, since 3310 // the window manager doesn't care about it. 3311 mWindowAttributes.softInputMode &= 3312 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3313 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3314 .softInputMode &= 3315 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3316 mHasHadWindowFocus = true; 3317 } 3318 3319 if (mView != null && mAccessibilityManager.isEnabled()) { 3320 if (hasWindowFocus) { 3321 mView.sendAccessibilityEvent( 3322 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3323 } 3324 } 3325 } 3326 } break; 3327 case MSG_DIE: 3328 doDie(); 3329 break; 3330 case MSG_DISPATCH_INPUT_EVENT: { 3331 SomeArgs args = (SomeArgs)msg.obj; 3332 InputEvent event = (InputEvent)args.arg1; 3333 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3334 enqueueInputEvent(event, receiver, 0, true); 3335 args.recycle(); 3336 } break; 3337 case MSG_SYNTHESIZE_INPUT_EVENT: { 3338 InputEvent event = (InputEvent)msg.obj; 3339 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3340 } break; 3341 case MSG_DISPATCH_KEY_FROM_IME: { 3342 if (LOCAL_LOGV) Log.v( 3343 TAG, "Dispatching key " 3344 + msg.obj + " from IME to " + mView); 3345 KeyEvent event = (KeyEvent)msg.obj; 3346 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3347 // The IME is trying to say this event is from the 3348 // system! Bad bad bad! 3349 //noinspection UnusedAssignment 3350 event = KeyEvent.changeFlags(event, event.getFlags() & 3351 ~KeyEvent.FLAG_FROM_SYSTEM); 3352 } 3353 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3354 } break; 3355 case MSG_FINISH_INPUT_CONNECTION: { 3356 InputMethodManager imm = InputMethodManager.peekInstance(); 3357 if (imm != null) { 3358 imm.reportFinishInputConnection((InputConnection)msg.obj); 3359 } 3360 } break; 3361 case MSG_CHECK_FOCUS: { 3362 InputMethodManager imm = InputMethodManager.peekInstance(); 3363 if (imm != null) { 3364 imm.checkFocus(); 3365 } 3366 } break; 3367 case MSG_CLOSE_SYSTEM_DIALOGS: { 3368 if (mView != null) { 3369 mView.onCloseSystemDialogs((String)msg.obj); 3370 } 3371 } break; 3372 case MSG_DISPATCH_DRAG_EVENT: 3373 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3374 DragEvent event = (DragEvent)msg.obj; 3375 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3376 handleDragEvent(event); 3377 } break; 3378 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3379 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3380 } break; 3381 case MSG_UPDATE_CONFIGURATION: { 3382 Configuration config = (Configuration)msg.obj; 3383 if (config.isOtherSeqNewer(mLastConfiguration)) { 3384 config = mLastConfiguration; 3385 } 3386 updateConfiguration(config, false); 3387 } break; 3388 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3389 setAccessibilityFocus(null, null); 3390 } break; 3391 case MSG_DISPATCH_DONE_ANIMATING: { 3392 handleDispatchDoneAnimating(); 3393 } break; 3394 case MSG_INVALIDATE_WORLD: { 3395 if (mView != null) { 3396 invalidateWorld(mView); 3397 } 3398 } break; 3399 case MSG_DISPATCH_WINDOW_SHOWN: { 3400 handleDispatchWindowShown(); 3401 } 3402 } 3403 } 3404 } 3405 3406 final ViewRootHandler mHandler = new ViewRootHandler(); 3407 3408 /** 3409 * Something in the current window tells us we need to change the touch mode. For 3410 * example, we are not in touch mode, and the user touches the screen. 3411 * 3412 * If the touch mode has changed, tell the window manager, and handle it locally. 3413 * 3414 * @param inTouchMode Whether we want to be in touch mode. 3415 * @return True if the touch mode changed and focus changed was changed as a result 3416 */ 3417 boolean ensureTouchMode(boolean inTouchMode) { 3418 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3419 + "touch mode is " + mAttachInfo.mInTouchMode); 3420 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3421 3422 // tell the window manager 3423 try { 3424 if (!isInLocalFocusMode()) { 3425 mWindowSession.setInTouchMode(inTouchMode); 3426 } 3427 } catch (RemoteException e) { 3428 throw new RuntimeException(e); 3429 } 3430 3431 // handle the change 3432 return ensureTouchModeLocally(inTouchMode); 3433 } 3434 3435 /** 3436 * Ensure that the touch mode for this window is set, and if it is changing, 3437 * take the appropriate action. 3438 * @param inTouchMode Whether we want to be in touch mode. 3439 * @return True if the touch mode changed and focus changed was changed as a result 3440 */ 3441 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3442 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3443 + "touch mode is " + mAttachInfo.mInTouchMode); 3444 3445 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3446 3447 mAttachInfo.mInTouchMode = inTouchMode; 3448 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3449 3450 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3451 } 3452 3453 private boolean enterTouchMode() { 3454 if (mView != null && mView.hasFocus()) { 3455 // note: not relying on mFocusedView here because this could 3456 // be when the window is first being added, and mFocused isn't 3457 // set yet. 3458 final View focused = mView.findFocus(); 3459 if (focused != null && !focused.isFocusableInTouchMode()) { 3460 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3461 if (ancestorToTakeFocus != null) { 3462 // there is an ancestor that wants focus after its 3463 // descendants that is focusable in touch mode.. give it 3464 // focus 3465 return ancestorToTakeFocus.requestFocus(); 3466 } else { 3467 // There's nothing to focus. Clear and propagate through the 3468 // hierarchy, but don't attempt to place new focus. 3469 focused.clearFocusInternal(null, true, false); 3470 return true; 3471 } 3472 } 3473 } 3474 return false; 3475 } 3476 3477 /** 3478 * Find an ancestor of focused that wants focus after its descendants and is 3479 * focusable in touch mode. 3480 * @param focused The currently focused view. 3481 * @return An appropriate view, or null if no such view exists. 3482 */ 3483 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3484 ViewParent parent = focused.getParent(); 3485 while (parent instanceof ViewGroup) { 3486 final ViewGroup vgParent = (ViewGroup) parent; 3487 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3488 && vgParent.isFocusableInTouchMode()) { 3489 return vgParent; 3490 } 3491 if (vgParent.isRootNamespace()) { 3492 return null; 3493 } else { 3494 parent = vgParent.getParent(); 3495 } 3496 } 3497 return null; 3498 } 3499 3500 private boolean leaveTouchMode() { 3501 if (mView != null) { 3502 if (mView.hasFocus()) { 3503 View focusedView = mView.findFocus(); 3504 if (!(focusedView instanceof ViewGroup)) { 3505 // some view has focus, let it keep it 3506 return false; 3507 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3508 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3509 // some view group has focus, and doesn't prefer its children 3510 // over itself for focus, so let them keep it. 3511 return false; 3512 } 3513 } 3514 3515 // find the best view to give focus to in this brave new non-touch-mode 3516 // world 3517 final View focused = focusSearch(null, View.FOCUS_DOWN); 3518 if (focused != null) { 3519 return focused.requestFocus(View.FOCUS_DOWN); 3520 } 3521 } 3522 return false; 3523 } 3524 3525 /** 3526 * Base class for implementing a stage in the chain of responsibility 3527 * for processing input events. 3528 * <p> 3529 * Events are delivered to the stage by the {@link #deliver} method. The stage 3530 * then has the choice of finishing the event or forwarding it to the next stage. 3531 * </p> 3532 */ 3533 abstract class InputStage { 3534 private final InputStage mNext; 3535 3536 protected static final int FORWARD = 0; 3537 protected static final int FINISH_HANDLED = 1; 3538 protected static final int FINISH_NOT_HANDLED = 2; 3539 3540 /** 3541 * Creates an input stage. 3542 * @param next The next stage to which events should be forwarded. 3543 */ 3544 public InputStage(InputStage next) { 3545 mNext = next; 3546 } 3547 3548 /** 3549 * Delivers an event to be processed. 3550 */ 3551 public final void deliver(QueuedInputEvent q) { 3552 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3553 forward(q); 3554 } else if (shouldDropInputEvent(q)) { 3555 finish(q, false); 3556 } else { 3557 apply(q, onProcess(q)); 3558 } 3559 } 3560 3561 /** 3562 * Marks the the input event as finished then forwards it to the next stage. 3563 */ 3564 protected void finish(QueuedInputEvent q, boolean handled) { 3565 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3566 if (handled) { 3567 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3568 } 3569 forward(q); 3570 } 3571 3572 /** 3573 * Forwards the event to the next stage. 3574 */ 3575 protected void forward(QueuedInputEvent q) { 3576 onDeliverToNext(q); 3577 } 3578 3579 /** 3580 * Applies a result code from {@link #onProcess} to the specified event. 3581 */ 3582 protected void apply(QueuedInputEvent q, int result) { 3583 if (result == FORWARD) { 3584 forward(q); 3585 } else if (result == FINISH_HANDLED) { 3586 finish(q, true); 3587 } else if (result == FINISH_NOT_HANDLED) { 3588 finish(q, false); 3589 } else { 3590 throw new IllegalArgumentException("Invalid result: " + result); 3591 } 3592 } 3593 3594 /** 3595 * Called when an event is ready to be processed. 3596 * @return A result code indicating how the event was handled. 3597 */ 3598 protected int onProcess(QueuedInputEvent q) { 3599 return FORWARD; 3600 } 3601 3602 /** 3603 * Called when an event is being delivered to the next stage. 3604 */ 3605 protected void onDeliverToNext(QueuedInputEvent q) { 3606 if (DEBUG_INPUT_STAGES) { 3607 Log.v(TAG, "Done with " + getClass().getSimpleName() + ". " + q); 3608 } 3609 if (mNext != null) { 3610 mNext.deliver(q); 3611 } else { 3612 finishInputEvent(q); 3613 } 3614 } 3615 3616 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3617 if (mView == null || !mAdded) { 3618 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3619 return true; 3620 } else if ((!mAttachInfo.mHasWindowFocus || mStopped) 3621 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) { 3622 // This is a focus event and the window doesn't currently have input focus or 3623 // has stopped. This could be an event that came back from the previous stage 3624 // but the window has lost focus or stopped in the meantime. 3625 if (isTerminalInputEvent(q.mEvent)) { 3626 // Don't drop terminal input events, however mark them as canceled. 3627 q.mEvent.cancel(); 3628 Slog.w(TAG, "Cancelling event due to no window focus: " + q.mEvent); 3629 return false; 3630 } 3631 3632 // Drop non-terminal input events. 3633 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3634 return true; 3635 } 3636 return false; 3637 } 3638 3639 void dump(String prefix, PrintWriter writer) { 3640 if (mNext != null) { 3641 mNext.dump(prefix, writer); 3642 } 3643 } 3644 } 3645 3646 /** 3647 * Base class for implementing an input pipeline stage that supports 3648 * asynchronous and out-of-order processing of input events. 3649 * <p> 3650 * In addition to what a normal input stage can do, an asynchronous 3651 * input stage may also defer an input event that has been delivered to it 3652 * and finish or forward it later. 3653 * </p> 3654 */ 3655 abstract class AsyncInputStage extends InputStage { 3656 private final String mTraceCounter; 3657 3658 private QueuedInputEvent mQueueHead; 3659 private QueuedInputEvent mQueueTail; 3660 private int mQueueLength; 3661 3662 protected static final int DEFER = 3; 3663 3664 /** 3665 * Creates an asynchronous input stage. 3666 * @param next The next stage to which events should be forwarded. 3667 * @param traceCounter The name of a counter to record the size of 3668 * the queue of pending events. 3669 */ 3670 public AsyncInputStage(InputStage next, String traceCounter) { 3671 super(next); 3672 mTraceCounter = traceCounter; 3673 } 3674 3675 /** 3676 * Marks the event as deferred, which is to say that it will be handled 3677 * asynchronously. The caller is responsible for calling {@link #forward} 3678 * or {@link #finish} later when it is done handling the event. 3679 */ 3680 protected void defer(QueuedInputEvent q) { 3681 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3682 enqueue(q); 3683 } 3684 3685 @Override 3686 protected void forward(QueuedInputEvent q) { 3687 // Clear the deferred flag. 3688 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3689 3690 // Fast path if the queue is empty. 3691 QueuedInputEvent curr = mQueueHead; 3692 if (curr == null) { 3693 super.forward(q); 3694 return; 3695 } 3696 3697 // Determine whether the event must be serialized behind any others 3698 // before it can be delivered to the next stage. This is done because 3699 // deferred events might be handled out of order by the stage. 3700 final int deviceId = q.mEvent.getDeviceId(); 3701 QueuedInputEvent prev = null; 3702 boolean blocked = false; 3703 while (curr != null && curr != q) { 3704 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3705 blocked = true; 3706 } 3707 prev = curr; 3708 curr = curr.mNext; 3709 } 3710 3711 // If the event is blocked, then leave it in the queue to be delivered later. 3712 // Note that the event might not yet be in the queue if it was not previously 3713 // deferred so we will enqueue it if needed. 3714 if (blocked) { 3715 if (curr == null) { 3716 enqueue(q); 3717 } 3718 return; 3719 } 3720 3721 // The event is not blocked. Deliver it immediately. 3722 if (curr != null) { 3723 curr = curr.mNext; 3724 dequeue(q, prev); 3725 } 3726 super.forward(q); 3727 3728 // Dequeuing this event may have unblocked successors. Deliver them. 3729 while (curr != null) { 3730 if (deviceId == curr.mEvent.getDeviceId()) { 3731 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3732 break; 3733 } 3734 QueuedInputEvent next = curr.mNext; 3735 dequeue(curr, prev); 3736 super.forward(curr); 3737 curr = next; 3738 } else { 3739 prev = curr; 3740 curr = curr.mNext; 3741 } 3742 } 3743 } 3744 3745 @Override 3746 protected void apply(QueuedInputEvent q, int result) { 3747 if (result == DEFER) { 3748 defer(q); 3749 } else { 3750 super.apply(q, result); 3751 } 3752 } 3753 3754 private void enqueue(QueuedInputEvent q) { 3755 if (mQueueTail == null) { 3756 mQueueHead = q; 3757 mQueueTail = q; 3758 } else { 3759 mQueueTail.mNext = q; 3760 mQueueTail = q; 3761 } 3762 3763 mQueueLength += 1; 3764 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3765 } 3766 3767 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3768 if (prev == null) { 3769 mQueueHead = q.mNext; 3770 } else { 3771 prev.mNext = q.mNext; 3772 } 3773 if (mQueueTail == q) { 3774 mQueueTail = prev; 3775 } 3776 q.mNext = null; 3777 3778 mQueueLength -= 1; 3779 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3780 } 3781 3782 @Override 3783 void dump(String prefix, PrintWriter writer) { 3784 writer.print(prefix); 3785 writer.print(getClass().getName()); 3786 writer.print(": mQueueLength="); 3787 writer.println(mQueueLength); 3788 3789 super.dump(prefix, writer); 3790 } 3791 } 3792 3793 /** 3794 * Delivers pre-ime input events to a native activity. 3795 * Does not support pointer events. 3796 */ 3797 final class NativePreImeInputStage extends AsyncInputStage 3798 implements InputQueue.FinishedInputEventCallback { 3799 public NativePreImeInputStage(InputStage next, String traceCounter) { 3800 super(next, traceCounter); 3801 } 3802 3803 @Override 3804 protected int onProcess(QueuedInputEvent q) { 3805 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3806 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3807 return DEFER; 3808 } 3809 return FORWARD; 3810 } 3811 3812 @Override 3813 public void onFinishedInputEvent(Object token, boolean handled) { 3814 QueuedInputEvent q = (QueuedInputEvent)token; 3815 if (handled) { 3816 finish(q, true); 3817 return; 3818 } 3819 forward(q); 3820 } 3821 } 3822 3823 /** 3824 * Delivers pre-ime input events to the view hierarchy. 3825 * Does not support pointer events. 3826 */ 3827 final class ViewPreImeInputStage extends InputStage { 3828 public ViewPreImeInputStage(InputStage next) { 3829 super(next); 3830 } 3831 3832 @Override 3833 protected int onProcess(QueuedInputEvent q) { 3834 if (q.mEvent instanceof KeyEvent) { 3835 return processKeyEvent(q); 3836 } 3837 return FORWARD; 3838 } 3839 3840 private int processKeyEvent(QueuedInputEvent q) { 3841 final KeyEvent event = (KeyEvent)q.mEvent; 3842 if (mView.dispatchKeyEventPreIme(event)) { 3843 return FINISH_HANDLED; 3844 } 3845 return FORWARD; 3846 } 3847 } 3848 3849 /** 3850 * Delivers input events to the ime. 3851 * Does not support pointer events. 3852 */ 3853 final class ImeInputStage extends AsyncInputStage 3854 implements InputMethodManager.FinishedInputEventCallback { 3855 public ImeInputStage(InputStage next, String traceCounter) { 3856 super(next, traceCounter); 3857 } 3858 3859 @Override 3860 protected int onProcess(QueuedInputEvent q) { 3861 if (mLastWasImTarget && !isInLocalFocusMode()) { 3862 InputMethodManager imm = InputMethodManager.peekInstance(); 3863 if (imm != null) { 3864 final InputEvent event = q.mEvent; 3865 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3866 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3867 if (result == InputMethodManager.DISPATCH_HANDLED) { 3868 return FINISH_HANDLED; 3869 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3870 // The IME could not handle it, so skip along to the next InputStage 3871 return FORWARD; 3872 } else { 3873 return DEFER; // callback will be invoked later 3874 } 3875 } 3876 } 3877 return FORWARD; 3878 } 3879 3880 @Override 3881 public void onFinishedInputEvent(Object token, boolean handled) { 3882 QueuedInputEvent q = (QueuedInputEvent)token; 3883 if (handled) { 3884 finish(q, true); 3885 return; 3886 } 3887 forward(q); 3888 } 3889 } 3890 3891 /** 3892 * Performs early processing of post-ime input events. 3893 */ 3894 final class EarlyPostImeInputStage extends InputStage { 3895 public EarlyPostImeInputStage(InputStage next) { 3896 super(next); 3897 } 3898 3899 @Override 3900 protected int onProcess(QueuedInputEvent q) { 3901 if (q.mEvent instanceof KeyEvent) { 3902 return processKeyEvent(q); 3903 } else { 3904 final int source = q.mEvent.getSource(); 3905 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3906 return processPointerEvent(q); 3907 } 3908 } 3909 return FORWARD; 3910 } 3911 3912 private int processKeyEvent(QueuedInputEvent q) { 3913 final KeyEvent event = (KeyEvent)q.mEvent; 3914 3915 // If the key's purpose is to exit touch mode then we consume it 3916 // and consider it handled. 3917 if (checkForLeavingTouchModeAndConsume(event)) { 3918 return FINISH_HANDLED; 3919 } 3920 3921 // Make sure the fallback event policy sees all keys that will be 3922 // delivered to the view hierarchy. 3923 mFallbackEventHandler.preDispatchKeyEvent(event); 3924 return FORWARD; 3925 } 3926 3927 private int processPointerEvent(QueuedInputEvent q) { 3928 final MotionEvent event = (MotionEvent)q.mEvent; 3929 3930 // Translate the pointer event for compatibility, if needed. 3931 if (mTranslator != null) { 3932 mTranslator.translateEventInScreenToAppWindow(event); 3933 } 3934 3935 // Enter touch mode on down or scroll. 3936 final int action = event.getAction(); 3937 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3938 ensureTouchMode(true); 3939 } 3940 3941 // Offset the scroll position. 3942 if (mCurScrollY != 0) { 3943 event.offsetLocation(0, mCurScrollY); 3944 } 3945 3946 // Remember the touch position for possible drag-initiation. 3947 if (event.isTouchEvent()) { 3948 mLastTouchPoint.x = event.getRawX(); 3949 mLastTouchPoint.y = event.getRawY(); 3950 } 3951 return FORWARD; 3952 } 3953 } 3954 3955 /** 3956 * Delivers post-ime input events to a native activity. 3957 */ 3958 final class NativePostImeInputStage extends AsyncInputStage 3959 implements InputQueue.FinishedInputEventCallback { 3960 public NativePostImeInputStage(InputStage next, String traceCounter) { 3961 super(next, traceCounter); 3962 } 3963 3964 @Override 3965 protected int onProcess(QueuedInputEvent q) { 3966 if (mInputQueue != null) { 3967 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3968 return DEFER; 3969 } 3970 return FORWARD; 3971 } 3972 3973 @Override 3974 public void onFinishedInputEvent(Object token, boolean handled) { 3975 QueuedInputEvent q = (QueuedInputEvent)token; 3976 if (handled) { 3977 finish(q, true); 3978 return; 3979 } 3980 forward(q); 3981 } 3982 } 3983 3984 /** 3985 * Delivers post-ime input events to the view hierarchy. 3986 */ 3987 final class ViewPostImeInputStage extends InputStage { 3988 public ViewPostImeInputStage(InputStage next) { 3989 super(next); 3990 } 3991 3992 @Override 3993 protected int onProcess(QueuedInputEvent q) { 3994 if (q.mEvent instanceof KeyEvent) { 3995 return processKeyEvent(q); 3996 } else { 3997 // If delivering a new non-key event, make sure the window is 3998 // now allowed to start updating. 3999 handleDispatchDoneAnimating(); 4000 final int source = q.mEvent.getSource(); 4001 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4002 return processPointerEvent(q); 4003 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4004 return processTrackballEvent(q); 4005 } else { 4006 return processGenericMotionEvent(q); 4007 } 4008 } 4009 } 4010 4011 @Override 4012 protected void onDeliverToNext(QueuedInputEvent q) { 4013 if (mUnbufferedInputDispatch 4014 && q.mEvent instanceof MotionEvent 4015 && ((MotionEvent)q.mEvent).isTouchEvent() 4016 && isTerminalInputEvent(q.mEvent)) { 4017 mUnbufferedInputDispatch = false; 4018 scheduleConsumeBatchedInput(); 4019 } 4020 super.onDeliverToNext(q); 4021 } 4022 4023 private int processKeyEvent(QueuedInputEvent q) { 4024 final KeyEvent event = (KeyEvent)q.mEvent; 4025 4026 if (event.getAction() != KeyEvent.ACTION_UP) { 4027 // If delivering a new key event, make sure the window is 4028 // now allowed to start updating. 4029 handleDispatchDoneAnimating(); 4030 } 4031 4032 // Deliver the key to the view hierarchy. 4033 if (mView.dispatchKeyEvent(event)) { 4034 return FINISH_HANDLED; 4035 } 4036 4037 if (shouldDropInputEvent(q)) { 4038 return FINISH_NOT_HANDLED; 4039 } 4040 4041 // If the Control modifier is held, try to interpret the key as a shortcut. 4042 if (event.getAction() == KeyEvent.ACTION_DOWN 4043 && event.isCtrlPressed() 4044 && event.getRepeatCount() == 0 4045 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4046 if (mView.dispatchKeyShortcutEvent(event)) { 4047 return FINISH_HANDLED; 4048 } 4049 if (shouldDropInputEvent(q)) { 4050 return FINISH_NOT_HANDLED; 4051 } 4052 } 4053 4054 // Apply the fallback event policy. 4055 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4056 return FINISH_HANDLED; 4057 } 4058 if (shouldDropInputEvent(q)) { 4059 return FINISH_NOT_HANDLED; 4060 } 4061 4062 // Handle automatic focus changes. 4063 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4064 int direction = 0; 4065 switch (event.getKeyCode()) { 4066 case KeyEvent.KEYCODE_DPAD_LEFT: 4067 if (event.hasNoModifiers()) { 4068 direction = View.FOCUS_LEFT; 4069 } 4070 break; 4071 case KeyEvent.KEYCODE_DPAD_RIGHT: 4072 if (event.hasNoModifiers()) { 4073 direction = View.FOCUS_RIGHT; 4074 } 4075 break; 4076 case KeyEvent.KEYCODE_DPAD_UP: 4077 if (event.hasNoModifiers()) { 4078 direction = View.FOCUS_UP; 4079 } 4080 break; 4081 case KeyEvent.KEYCODE_DPAD_DOWN: 4082 if (event.hasNoModifiers()) { 4083 direction = View.FOCUS_DOWN; 4084 } 4085 break; 4086 case KeyEvent.KEYCODE_TAB: 4087 if (event.hasNoModifiers()) { 4088 direction = View.FOCUS_FORWARD; 4089 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4090 direction = View.FOCUS_BACKWARD; 4091 } 4092 break; 4093 } 4094 if (direction != 0) { 4095 View focused = mView.findFocus(); 4096 if (focused != null) { 4097 View v = focused.focusSearch(direction); 4098 if (v != null && v != focused) { 4099 // do the math the get the interesting rect 4100 // of previous focused into the coord system of 4101 // newly focused view 4102 focused.getFocusedRect(mTempRect); 4103 if (mView instanceof ViewGroup) { 4104 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4105 focused, mTempRect); 4106 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4107 v, mTempRect); 4108 } 4109 if (v.requestFocus(direction, mTempRect)) { 4110 playSoundEffect(SoundEffectConstants 4111 .getContantForFocusDirection(direction)); 4112 return FINISH_HANDLED; 4113 } 4114 } 4115 4116 // Give the focused view a last chance to handle the dpad key. 4117 if (mView.dispatchUnhandledMove(focused, direction)) { 4118 return FINISH_HANDLED; 4119 } 4120 } else { 4121 // find the best view to give focus to in this non-touch-mode with no-focus 4122 View v = focusSearch(null, direction); 4123 if (v != null && v.requestFocus(direction)) { 4124 return FINISH_HANDLED; 4125 } 4126 } 4127 } 4128 } 4129 return FORWARD; 4130 } 4131 4132 private int processPointerEvent(QueuedInputEvent q) { 4133 final MotionEvent event = (MotionEvent)q.mEvent; 4134 4135 mAttachInfo.mUnbufferedDispatchRequested = false; 4136 boolean handled = mView.dispatchPointerEvent(event); 4137 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4138 mUnbufferedInputDispatch = true; 4139 if (mConsumeBatchedInputScheduled) { 4140 scheduleConsumeBatchedInputImmediately(); 4141 } 4142 } 4143 return handled ? FINISH_HANDLED : FORWARD; 4144 } 4145 4146 private int processTrackballEvent(QueuedInputEvent q) { 4147 final MotionEvent event = (MotionEvent)q.mEvent; 4148 4149 if (mView.dispatchTrackballEvent(event)) { 4150 return FINISH_HANDLED; 4151 } 4152 return FORWARD; 4153 } 4154 4155 private int processGenericMotionEvent(QueuedInputEvent q) { 4156 final MotionEvent event = (MotionEvent)q.mEvent; 4157 4158 // Deliver the event to the view. 4159 if (mView.dispatchGenericMotionEvent(event)) { 4160 return FINISH_HANDLED; 4161 } 4162 return FORWARD; 4163 } 4164 } 4165 4166 /** 4167 * Performs synthesis of new input events from unhandled input events. 4168 */ 4169 final class SyntheticInputStage extends InputStage { 4170 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4171 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4172 private final SyntheticTouchNavigationHandler mTouchNavigation = 4173 new SyntheticTouchNavigationHandler(); 4174 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4175 4176 public SyntheticInputStage() { 4177 super(null); 4178 } 4179 4180 @Override 4181 protected int onProcess(QueuedInputEvent q) { 4182 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4183 if (q.mEvent instanceof MotionEvent) { 4184 final MotionEvent event = (MotionEvent)q.mEvent; 4185 final int source = event.getSource(); 4186 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4187 mTrackball.process(event); 4188 return FINISH_HANDLED; 4189 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4190 mJoystick.process(event); 4191 return FINISH_HANDLED; 4192 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4193 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4194 mTouchNavigation.process(event); 4195 return FINISH_HANDLED; 4196 } 4197 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4198 mKeyboard.process((KeyEvent)q.mEvent); 4199 return FINISH_HANDLED; 4200 } 4201 4202 return FORWARD; 4203 } 4204 4205 @Override 4206 protected void onDeliverToNext(QueuedInputEvent q) { 4207 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4208 // Cancel related synthetic events if any prior stage has handled the event. 4209 if (q.mEvent instanceof MotionEvent) { 4210 final MotionEvent event = (MotionEvent)q.mEvent; 4211 final int source = event.getSource(); 4212 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4213 mTrackball.cancel(event); 4214 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4215 mJoystick.cancel(event); 4216 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4217 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4218 mTouchNavigation.cancel(event); 4219 } 4220 } 4221 } 4222 super.onDeliverToNext(q); 4223 } 4224 } 4225 4226 /** 4227 * Creates dpad events from unhandled trackball movements. 4228 */ 4229 final class SyntheticTrackballHandler { 4230 private final TrackballAxis mX = new TrackballAxis(); 4231 private final TrackballAxis mY = new TrackballAxis(); 4232 private long mLastTime; 4233 4234 public void process(MotionEvent event) { 4235 // Translate the trackball event into DPAD keys and try to deliver those. 4236 long curTime = SystemClock.uptimeMillis(); 4237 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4238 // It has been too long since the last movement, 4239 // so restart at the beginning. 4240 mX.reset(0); 4241 mY.reset(0); 4242 mLastTime = curTime; 4243 } 4244 4245 final int action = event.getAction(); 4246 final int metaState = event.getMetaState(); 4247 switch (action) { 4248 case MotionEvent.ACTION_DOWN: 4249 mX.reset(2); 4250 mY.reset(2); 4251 enqueueInputEvent(new KeyEvent(curTime, curTime, 4252 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4253 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4254 InputDevice.SOURCE_KEYBOARD)); 4255 break; 4256 case MotionEvent.ACTION_UP: 4257 mX.reset(2); 4258 mY.reset(2); 4259 enqueueInputEvent(new KeyEvent(curTime, curTime, 4260 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4261 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4262 InputDevice.SOURCE_KEYBOARD)); 4263 break; 4264 } 4265 4266 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4267 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4268 + " move=" + event.getX() 4269 + " / Y=" + mY.position + " step=" 4270 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4271 + " move=" + event.getY()); 4272 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4273 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4274 4275 // Generate DPAD events based on the trackball movement. 4276 // We pick the axis that has moved the most as the direction of 4277 // the DPAD. When we generate DPAD events for one axis, then the 4278 // other axis is reset -- we don't want to perform DPAD jumps due 4279 // to slight movements in the trackball when making major movements 4280 // along the other axis. 4281 int keycode = 0; 4282 int movement = 0; 4283 float accel = 1; 4284 if (xOff > yOff) { 4285 movement = mX.generate(); 4286 if (movement != 0) { 4287 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4288 : KeyEvent.KEYCODE_DPAD_LEFT; 4289 accel = mX.acceleration; 4290 mY.reset(2); 4291 } 4292 } else if (yOff > 0) { 4293 movement = mY.generate(); 4294 if (movement != 0) { 4295 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4296 : KeyEvent.KEYCODE_DPAD_UP; 4297 accel = mY.acceleration; 4298 mX.reset(2); 4299 } 4300 } 4301 4302 if (keycode != 0) { 4303 if (movement < 0) movement = -movement; 4304 int accelMovement = (int)(movement * accel); 4305 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4306 + " accelMovement=" + accelMovement 4307 + " accel=" + accel); 4308 if (accelMovement > movement) { 4309 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4310 + keycode); 4311 movement--; 4312 int repeatCount = accelMovement - movement; 4313 enqueueInputEvent(new KeyEvent(curTime, curTime, 4314 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4315 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4316 InputDevice.SOURCE_KEYBOARD)); 4317 } 4318 while (movement > 0) { 4319 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4320 + keycode); 4321 movement--; 4322 curTime = SystemClock.uptimeMillis(); 4323 enqueueInputEvent(new KeyEvent(curTime, curTime, 4324 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4325 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4326 InputDevice.SOURCE_KEYBOARD)); 4327 enqueueInputEvent(new KeyEvent(curTime, curTime, 4328 KeyEvent.ACTION_UP, keycode, 0, metaState, 4329 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4330 InputDevice.SOURCE_KEYBOARD)); 4331 } 4332 mLastTime = curTime; 4333 } 4334 } 4335 4336 public void cancel(MotionEvent event) { 4337 mLastTime = Integer.MIN_VALUE; 4338 4339 // If we reach this, we consumed a trackball event. 4340 // Because we will not translate the trackball event into a key event, 4341 // touch mode will not exit, so we exit touch mode here. 4342 if (mView != null && mAdded) { 4343 ensureTouchMode(false); 4344 } 4345 } 4346 } 4347 4348 /** 4349 * Maintains state information for a single trackball axis, generating 4350 * discrete (DPAD) movements based on raw trackball motion. 4351 */ 4352 static final class TrackballAxis { 4353 /** 4354 * The maximum amount of acceleration we will apply. 4355 */ 4356 static final float MAX_ACCELERATION = 20; 4357 4358 /** 4359 * The maximum amount of time (in milliseconds) between events in order 4360 * for us to consider the user to be doing fast trackball movements, 4361 * and thus apply an acceleration. 4362 */ 4363 static final long FAST_MOVE_TIME = 150; 4364 4365 /** 4366 * Scaling factor to the time (in milliseconds) between events to how 4367 * much to multiple/divide the current acceleration. When movement 4368 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4369 * FAST_MOVE_TIME it divides it. 4370 */ 4371 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4372 4373 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4374 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4375 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4376 4377 float position; 4378 float acceleration = 1; 4379 long lastMoveTime = 0; 4380 int step; 4381 int dir; 4382 int nonAccelMovement; 4383 4384 void reset(int _step) { 4385 position = 0; 4386 acceleration = 1; 4387 lastMoveTime = 0; 4388 step = _step; 4389 dir = 0; 4390 } 4391 4392 /** 4393 * Add trackball movement into the state. If the direction of movement 4394 * has been reversed, the state is reset before adding the 4395 * movement (so that you don't have to compensate for any previously 4396 * collected movement before see the result of the movement in the 4397 * new direction). 4398 * 4399 * @return Returns the absolute value of the amount of movement 4400 * collected so far. 4401 */ 4402 float collect(float off, long time, String axis) { 4403 long normTime; 4404 if (off > 0) { 4405 normTime = (long)(off * FAST_MOVE_TIME); 4406 if (dir < 0) { 4407 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4408 position = 0; 4409 step = 0; 4410 acceleration = 1; 4411 lastMoveTime = 0; 4412 } 4413 dir = 1; 4414 } else if (off < 0) { 4415 normTime = (long)((-off) * FAST_MOVE_TIME); 4416 if (dir > 0) { 4417 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4418 position = 0; 4419 step = 0; 4420 acceleration = 1; 4421 lastMoveTime = 0; 4422 } 4423 dir = -1; 4424 } else { 4425 normTime = 0; 4426 } 4427 4428 // The number of milliseconds between each movement that is 4429 // considered "normal" and will not result in any acceleration 4430 // or deceleration, scaled by the offset we have here. 4431 if (normTime > 0) { 4432 long delta = time - lastMoveTime; 4433 lastMoveTime = time; 4434 float acc = acceleration; 4435 if (delta < normTime) { 4436 // The user is scrolling rapidly, so increase acceleration. 4437 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4438 if (scale > 1) acc *= scale; 4439 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4440 + off + " normTime=" + normTime + " delta=" + delta 4441 + " scale=" + scale + " acc=" + acc); 4442 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4443 } else { 4444 // The user is scrolling slowly, so decrease acceleration. 4445 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4446 if (scale > 1) acc /= scale; 4447 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4448 + off + " normTime=" + normTime + " delta=" + delta 4449 + " scale=" + scale + " acc=" + acc); 4450 acceleration = acc > 1 ? acc : 1; 4451 } 4452 } 4453 position += off; 4454 return Math.abs(position); 4455 } 4456 4457 /** 4458 * Generate the number of discrete movement events appropriate for 4459 * the currently collected trackball movement. 4460 * 4461 * @return Returns the number of discrete movements, either positive 4462 * or negative, or 0 if there is not enough trackball movement yet 4463 * for a discrete movement. 4464 */ 4465 int generate() { 4466 int movement = 0; 4467 nonAccelMovement = 0; 4468 do { 4469 final int dir = position >= 0 ? 1 : -1; 4470 switch (step) { 4471 // If we are going to execute the first step, then we want 4472 // to do this as soon as possible instead of waiting for 4473 // a full movement, in order to make things look responsive. 4474 case 0: 4475 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4476 return movement; 4477 } 4478 movement += dir; 4479 nonAccelMovement += dir; 4480 step = 1; 4481 break; 4482 // If we have generated the first movement, then we need 4483 // to wait for the second complete trackball motion before 4484 // generating the second discrete movement. 4485 case 1: 4486 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4487 return movement; 4488 } 4489 movement += dir; 4490 nonAccelMovement += dir; 4491 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4492 step = 2; 4493 break; 4494 // After the first two, we generate discrete movements 4495 // consistently with the trackball, applying an acceleration 4496 // if the trackball is moving quickly. This is a simple 4497 // acceleration on top of what we already compute based 4498 // on how quickly the wheel is being turned, to apply 4499 // a longer increasing acceleration to continuous movement 4500 // in one direction. 4501 default: 4502 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4503 return movement; 4504 } 4505 movement += dir; 4506 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4507 float acc = acceleration; 4508 acc *= 1.1f; 4509 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4510 break; 4511 } 4512 } while (true); 4513 } 4514 } 4515 4516 /** 4517 * Creates dpad events from unhandled joystick movements. 4518 */ 4519 final class SyntheticJoystickHandler extends Handler { 4520 private final static String TAG = "SyntheticJoystickHandler"; 4521 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4522 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4523 4524 private int mLastXDirection; 4525 private int mLastYDirection; 4526 private int mLastXKeyCode; 4527 private int mLastYKeyCode; 4528 4529 public SyntheticJoystickHandler() { 4530 super(true); 4531 } 4532 4533 @Override 4534 public void handleMessage(Message msg) { 4535 switch (msg.what) { 4536 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4537 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4538 KeyEvent oldEvent = (KeyEvent)msg.obj; 4539 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4540 SystemClock.uptimeMillis(), 4541 oldEvent.getRepeatCount() + 1); 4542 if (mAttachInfo.mHasWindowFocus) { 4543 enqueueInputEvent(e); 4544 Message m = obtainMessage(msg.what, e); 4545 m.setAsynchronous(true); 4546 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4547 } 4548 } break; 4549 } 4550 } 4551 4552 public void process(MotionEvent event) { 4553 switch(event.getActionMasked()) { 4554 case MotionEvent.ACTION_CANCEL: 4555 cancel(event); 4556 break; 4557 case MotionEvent.ACTION_MOVE: 4558 update(event, true); 4559 break; 4560 default: 4561 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4562 } 4563 } 4564 4565 private void cancel(MotionEvent event) { 4566 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4567 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4568 update(event, false); 4569 } 4570 4571 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4572 final long time = event.getEventTime(); 4573 final int metaState = event.getMetaState(); 4574 final int deviceId = event.getDeviceId(); 4575 final int source = event.getSource(); 4576 4577 int xDirection = joystickAxisValueToDirection( 4578 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4579 if (xDirection == 0) { 4580 xDirection = joystickAxisValueToDirection(event.getX()); 4581 } 4582 4583 int yDirection = joystickAxisValueToDirection( 4584 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4585 if (yDirection == 0) { 4586 yDirection = joystickAxisValueToDirection(event.getY()); 4587 } 4588 4589 if (xDirection != mLastXDirection) { 4590 if (mLastXKeyCode != 0) { 4591 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4592 enqueueInputEvent(new KeyEvent(time, time, 4593 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4594 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4595 mLastXKeyCode = 0; 4596 } 4597 4598 mLastXDirection = xDirection; 4599 4600 if (xDirection != 0 && synthesizeNewKeys) { 4601 mLastXKeyCode = xDirection > 0 4602 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4603 final KeyEvent e = new KeyEvent(time, time, 4604 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4605 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4606 enqueueInputEvent(e); 4607 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4608 m.setAsynchronous(true); 4609 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4610 } 4611 } 4612 4613 if (yDirection != mLastYDirection) { 4614 if (mLastYKeyCode != 0) { 4615 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4616 enqueueInputEvent(new KeyEvent(time, time, 4617 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4618 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4619 mLastYKeyCode = 0; 4620 } 4621 4622 mLastYDirection = yDirection; 4623 4624 if (yDirection != 0 && synthesizeNewKeys) { 4625 mLastYKeyCode = yDirection > 0 4626 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4627 final KeyEvent e = new KeyEvent(time, time, 4628 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4629 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4630 enqueueInputEvent(e); 4631 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4632 m.setAsynchronous(true); 4633 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4634 } 4635 } 4636 } 4637 4638 private int joystickAxisValueToDirection(float value) { 4639 if (value >= 0.5f) { 4640 return 1; 4641 } else if (value <= -0.5f) { 4642 return -1; 4643 } else { 4644 return 0; 4645 } 4646 } 4647 } 4648 4649 /** 4650 * Creates dpad events from unhandled touch navigation movements. 4651 */ 4652 final class SyntheticTouchNavigationHandler extends Handler { 4653 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4654 private static final boolean LOCAL_DEBUG = false; 4655 4656 // Assumed nominal width and height in millimeters of a touch navigation pad, 4657 // if no resolution information is available from the input system. 4658 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4659 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4660 4661 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4662 4663 // The nominal distance traveled to move by one unit. 4664 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4665 4666 // Minimum and maximum fling velocity in ticks per second. 4667 // The minimum velocity should be set such that we perform enough ticks per 4668 // second that the fling appears to be fluid. For example, if we set the minimum 4669 // to 2 ticks per second, then there may be up to half a second delay between the next 4670 // to last and last ticks which is noticeably discrete and jerky. This value should 4671 // probably not be set to anything less than about 4. 4672 // If fling accuracy is a problem then consider tuning the tick distance instead. 4673 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4674 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4675 4676 // Fling velocity decay factor applied after each new key is emitted. 4677 // This parameter controls the deceleration and overall duration of the fling. 4678 // The fling stops automatically when its velocity drops below the minimum 4679 // fling velocity defined above. 4680 private static final float FLING_TICK_DECAY = 0.8f; 4681 4682 /* The input device that we are tracking. */ 4683 4684 private int mCurrentDeviceId = -1; 4685 private int mCurrentSource; 4686 private boolean mCurrentDeviceSupported; 4687 4688 /* Configuration for the current input device. */ 4689 4690 // The scaled tick distance. A movement of this amount should generally translate 4691 // into a single dpad event in a given direction. 4692 private float mConfigTickDistance; 4693 4694 // The minimum and maximum scaled fling velocity. 4695 private float mConfigMinFlingVelocity; 4696 private float mConfigMaxFlingVelocity; 4697 4698 /* Tracking state. */ 4699 4700 // The velocity tracker for detecting flings. 4701 private VelocityTracker mVelocityTracker; 4702 4703 // The active pointer id, or -1 if none. 4704 private int mActivePointerId = -1; 4705 4706 // Location where tracking started. 4707 private float mStartX; 4708 private float mStartY; 4709 4710 // Most recently observed position. 4711 private float mLastX; 4712 private float mLastY; 4713 4714 // Accumulated movement delta since the last direction key was sent. 4715 private float mAccumulatedX; 4716 private float mAccumulatedY; 4717 4718 // Set to true if any movement was delivered to the app. 4719 // Implies that tap slop was exceeded. 4720 private boolean mConsumedMovement; 4721 4722 // The most recently sent key down event. 4723 // The keycode remains set until the direction changes or a fling ends 4724 // so that repeated key events may be generated as required. 4725 private long mPendingKeyDownTime; 4726 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4727 private int mPendingKeyRepeatCount; 4728 private int mPendingKeyMetaState; 4729 4730 // The current fling velocity while a fling is in progress. 4731 private boolean mFlinging; 4732 private float mFlingVelocity; 4733 4734 public SyntheticTouchNavigationHandler() { 4735 super(true); 4736 } 4737 4738 public void process(MotionEvent event) { 4739 // Update the current device information. 4740 final long time = event.getEventTime(); 4741 final int deviceId = event.getDeviceId(); 4742 final int source = event.getSource(); 4743 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4744 finishKeys(time); 4745 finishTracking(time); 4746 mCurrentDeviceId = deviceId; 4747 mCurrentSource = source; 4748 mCurrentDeviceSupported = false; 4749 InputDevice device = event.getDevice(); 4750 if (device != null) { 4751 // In order to support an input device, we must know certain 4752 // characteristics about it, such as its size and resolution. 4753 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4754 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4755 if (xRange != null && yRange != null) { 4756 mCurrentDeviceSupported = true; 4757 4758 // Infer the resolution if it not actually known. 4759 float xRes = xRange.getResolution(); 4760 if (xRes <= 0) { 4761 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4762 } 4763 float yRes = yRange.getResolution(); 4764 if (yRes <= 0) { 4765 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4766 } 4767 float nominalRes = (xRes + yRes) * 0.5f; 4768 4769 // Precompute all of the configuration thresholds we will need. 4770 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4771 mConfigMinFlingVelocity = 4772 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4773 mConfigMaxFlingVelocity = 4774 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4775 4776 if (LOCAL_DEBUG) { 4777 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4778 + " (" + Integer.toHexString(mCurrentSource) + "): " 4779 + ", mConfigTickDistance=" + mConfigTickDistance 4780 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4781 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4782 } 4783 } 4784 } 4785 } 4786 if (!mCurrentDeviceSupported) { 4787 return; 4788 } 4789 4790 // Handle the event. 4791 final int action = event.getActionMasked(); 4792 switch (action) { 4793 case MotionEvent.ACTION_DOWN: { 4794 boolean caughtFling = mFlinging; 4795 finishKeys(time); 4796 finishTracking(time); 4797 mActivePointerId = event.getPointerId(0); 4798 mVelocityTracker = VelocityTracker.obtain(); 4799 mVelocityTracker.addMovement(event); 4800 mStartX = event.getX(); 4801 mStartY = event.getY(); 4802 mLastX = mStartX; 4803 mLastY = mStartY; 4804 mAccumulatedX = 0; 4805 mAccumulatedY = 0; 4806 4807 // If we caught a fling, then pretend that the tap slop has already 4808 // been exceeded to suppress taps whose only purpose is to stop the fling. 4809 mConsumedMovement = caughtFling; 4810 break; 4811 } 4812 4813 case MotionEvent.ACTION_MOVE: 4814 case MotionEvent.ACTION_UP: { 4815 if (mActivePointerId < 0) { 4816 break; 4817 } 4818 final int index = event.findPointerIndex(mActivePointerId); 4819 if (index < 0) { 4820 finishKeys(time); 4821 finishTracking(time); 4822 break; 4823 } 4824 4825 mVelocityTracker.addMovement(event); 4826 final float x = event.getX(index); 4827 final float y = event.getY(index); 4828 mAccumulatedX += x - mLastX; 4829 mAccumulatedY += y - mLastY; 4830 mLastX = x; 4831 mLastY = y; 4832 4833 // Consume any accumulated movement so far. 4834 final int metaState = event.getMetaState(); 4835 consumeAccumulatedMovement(time, metaState); 4836 4837 // Detect taps and flings. 4838 if (action == MotionEvent.ACTION_UP) { 4839 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4840 // It might be a fling. 4841 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4842 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4843 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4844 if (!startFling(time, vx, vy)) { 4845 finishKeys(time); 4846 } 4847 } 4848 finishTracking(time); 4849 } 4850 break; 4851 } 4852 4853 case MotionEvent.ACTION_CANCEL: { 4854 finishKeys(time); 4855 finishTracking(time); 4856 break; 4857 } 4858 } 4859 } 4860 4861 public void cancel(MotionEvent event) { 4862 if (mCurrentDeviceId == event.getDeviceId() 4863 && mCurrentSource == event.getSource()) { 4864 final long time = event.getEventTime(); 4865 finishKeys(time); 4866 finishTracking(time); 4867 } 4868 } 4869 4870 private void finishKeys(long time) { 4871 cancelFling(); 4872 sendKeyUp(time); 4873 } 4874 4875 private void finishTracking(long time) { 4876 if (mActivePointerId >= 0) { 4877 mActivePointerId = -1; 4878 mVelocityTracker.recycle(); 4879 mVelocityTracker = null; 4880 } 4881 } 4882 4883 private void consumeAccumulatedMovement(long time, int metaState) { 4884 final float absX = Math.abs(mAccumulatedX); 4885 final float absY = Math.abs(mAccumulatedY); 4886 if (absX >= absY) { 4887 if (absX >= mConfigTickDistance) { 4888 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4889 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4890 mAccumulatedY = 0; 4891 mConsumedMovement = true; 4892 } 4893 } else { 4894 if (absY >= mConfigTickDistance) { 4895 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4896 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4897 mAccumulatedX = 0; 4898 mConsumedMovement = true; 4899 } 4900 } 4901 } 4902 4903 private float consumeAccumulatedMovement(long time, int metaState, 4904 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4905 while (accumulator <= -mConfigTickDistance) { 4906 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4907 accumulator += mConfigTickDistance; 4908 } 4909 while (accumulator >= mConfigTickDistance) { 4910 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4911 accumulator -= mConfigTickDistance; 4912 } 4913 return accumulator; 4914 } 4915 4916 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4917 if (mPendingKeyCode != keyCode) { 4918 sendKeyUp(time); 4919 mPendingKeyDownTime = time; 4920 mPendingKeyCode = keyCode; 4921 mPendingKeyRepeatCount = 0; 4922 } else { 4923 mPendingKeyRepeatCount += 1; 4924 } 4925 mPendingKeyMetaState = metaState; 4926 4927 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4928 // but it doesn't quite make sense when simulating the events in this way. 4929 if (LOCAL_DEBUG) { 4930 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4931 + ", repeatCount=" + mPendingKeyRepeatCount 4932 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4933 } 4934 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4935 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4936 mPendingKeyMetaState, mCurrentDeviceId, 4937 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4938 } 4939 4940 private void sendKeyUp(long time) { 4941 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4942 if (LOCAL_DEBUG) { 4943 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4944 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4945 } 4946 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4947 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4948 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4949 mCurrentSource)); 4950 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4951 } 4952 } 4953 4954 private boolean startFling(long time, float vx, float vy) { 4955 if (LOCAL_DEBUG) { 4956 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4957 + ", min=" + mConfigMinFlingVelocity); 4958 } 4959 4960 // Flings must be oriented in the same direction as the preceding movements. 4961 switch (mPendingKeyCode) { 4962 case KeyEvent.KEYCODE_DPAD_LEFT: 4963 if (-vx >= mConfigMinFlingVelocity 4964 && Math.abs(vy) < mConfigMinFlingVelocity) { 4965 mFlingVelocity = -vx; 4966 break; 4967 } 4968 return false; 4969 4970 case KeyEvent.KEYCODE_DPAD_RIGHT: 4971 if (vx >= mConfigMinFlingVelocity 4972 && Math.abs(vy) < mConfigMinFlingVelocity) { 4973 mFlingVelocity = vx; 4974 break; 4975 } 4976 return false; 4977 4978 case KeyEvent.KEYCODE_DPAD_UP: 4979 if (-vy >= mConfigMinFlingVelocity 4980 && Math.abs(vx) < mConfigMinFlingVelocity) { 4981 mFlingVelocity = -vy; 4982 break; 4983 } 4984 return false; 4985 4986 case KeyEvent.KEYCODE_DPAD_DOWN: 4987 if (vy >= mConfigMinFlingVelocity 4988 && Math.abs(vx) < mConfigMinFlingVelocity) { 4989 mFlingVelocity = vy; 4990 break; 4991 } 4992 return false; 4993 } 4994 4995 // Post the first fling event. 4996 mFlinging = postFling(time); 4997 return mFlinging; 4998 } 4999 5000 private boolean postFling(long time) { 5001 // The idea here is to estimate the time when the pointer would have 5002 // traveled one tick distance unit given the current fling velocity. 5003 // This effect creates continuity of motion. 5004 if (mFlingVelocity >= mConfigMinFlingVelocity) { 5005 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 5006 postAtTime(mFlingRunnable, time + delay); 5007 if (LOCAL_DEBUG) { 5008 Log.d(LOCAL_TAG, "Posted fling: velocity=" 5009 + mFlingVelocity + ", delay=" + delay 5010 + ", keyCode=" + mPendingKeyCode); 5011 } 5012 return true; 5013 } 5014 return false; 5015 } 5016 5017 private void cancelFling() { 5018 if (mFlinging) { 5019 removeCallbacks(mFlingRunnable); 5020 mFlinging = false; 5021 } 5022 } 5023 5024 private final Runnable mFlingRunnable = new Runnable() { 5025 @Override 5026 public void run() { 5027 final long time = SystemClock.uptimeMillis(); 5028 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5029 mFlingVelocity *= FLING_TICK_DECAY; 5030 if (!postFling(time)) { 5031 mFlinging = false; 5032 finishKeys(time); 5033 } 5034 } 5035 }; 5036 } 5037 5038 final class SyntheticKeyboardHandler { 5039 public void process(KeyEvent event) { 5040 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5041 return; 5042 } 5043 5044 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5045 final int keyCode = event.getKeyCode(); 5046 final int metaState = event.getMetaState(); 5047 5048 // Check for fallback actions specified by the key character map. 5049 KeyCharacterMap.FallbackAction fallbackAction = 5050 kcm.getFallbackAction(keyCode, metaState); 5051 if (fallbackAction != null) { 5052 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5053 KeyEvent fallbackEvent = KeyEvent.obtain( 5054 event.getDownTime(), event.getEventTime(), 5055 event.getAction(), fallbackAction.keyCode, 5056 event.getRepeatCount(), fallbackAction.metaState, 5057 event.getDeviceId(), event.getScanCode(), 5058 flags, event.getSource(), null); 5059 fallbackAction.recycle(); 5060 enqueueInputEvent(fallbackEvent); 5061 } 5062 } 5063 } 5064 5065 /** 5066 * Returns true if the key is used for keyboard navigation. 5067 * @param keyEvent The key event. 5068 * @return True if the key is used for keyboard navigation. 5069 */ 5070 private static boolean isNavigationKey(KeyEvent keyEvent) { 5071 switch (keyEvent.getKeyCode()) { 5072 case KeyEvent.KEYCODE_DPAD_LEFT: 5073 case KeyEvent.KEYCODE_DPAD_RIGHT: 5074 case KeyEvent.KEYCODE_DPAD_UP: 5075 case KeyEvent.KEYCODE_DPAD_DOWN: 5076 case KeyEvent.KEYCODE_DPAD_CENTER: 5077 case KeyEvent.KEYCODE_PAGE_UP: 5078 case KeyEvent.KEYCODE_PAGE_DOWN: 5079 case KeyEvent.KEYCODE_MOVE_HOME: 5080 case KeyEvent.KEYCODE_MOVE_END: 5081 case KeyEvent.KEYCODE_TAB: 5082 case KeyEvent.KEYCODE_SPACE: 5083 case KeyEvent.KEYCODE_ENTER: 5084 return true; 5085 } 5086 return false; 5087 } 5088 5089 /** 5090 * Returns true if the key is used for typing. 5091 * @param keyEvent The key event. 5092 * @return True if the key is used for typing. 5093 */ 5094 private static boolean isTypingKey(KeyEvent keyEvent) { 5095 return keyEvent.getUnicodeChar() > 0; 5096 } 5097 5098 /** 5099 * See if the key event means we should leave touch mode (and leave touch mode if so). 5100 * @param event The key event. 5101 * @return Whether this key event should be consumed (meaning the act of 5102 * leaving touch mode alone is considered the event). 5103 */ 5104 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5105 // Only relevant in touch mode. 5106 if (!mAttachInfo.mInTouchMode) { 5107 return false; 5108 } 5109 5110 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5111 final int action = event.getAction(); 5112 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5113 return false; 5114 } 5115 5116 // Don't leave touch mode if the IME told us not to. 5117 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5118 return false; 5119 } 5120 5121 // If the key can be used for keyboard navigation then leave touch mode 5122 // and select a focused view if needed (in ensureTouchMode). 5123 // When a new focused view is selected, we consume the navigation key because 5124 // navigation doesn't make much sense unless a view already has focus so 5125 // the key's purpose is to set focus. 5126 if (isNavigationKey(event)) { 5127 return ensureTouchMode(false); 5128 } 5129 5130 // If the key can be used for typing then leave touch mode 5131 // and select a focused view if needed (in ensureTouchMode). 5132 // Always allow the view to process the typing key. 5133 if (isTypingKey(event)) { 5134 ensureTouchMode(false); 5135 return false; 5136 } 5137 5138 return false; 5139 } 5140 5141 /* drag/drop */ 5142 void setLocalDragState(Object obj) { 5143 mLocalDragState = obj; 5144 } 5145 5146 private void handleDragEvent(DragEvent event) { 5147 // From the root, only drag start/end/location are dispatched. entered/exited 5148 // are determined and dispatched by the viewgroup hierarchy, who then report 5149 // that back here for ultimate reporting back to the framework. 5150 if (mView != null && mAdded) { 5151 final int what = event.mAction; 5152 5153 if (what == DragEvent.ACTION_DRAG_EXITED) { 5154 // A direct EXITED event means that the window manager knows we've just crossed 5155 // a window boundary, so the current drag target within this one must have 5156 // just been exited. Send it the usual notifications and then we're done 5157 // for now. 5158 mView.dispatchDragEvent(event); 5159 } else { 5160 // Cache the drag description when the operation starts, then fill it in 5161 // on subsequent calls as a convenience 5162 if (what == DragEvent.ACTION_DRAG_STARTED) { 5163 mCurrentDragView = null; // Start the current-recipient tracking 5164 mDragDescription = event.mClipDescription; 5165 } else { 5166 event.mClipDescription = mDragDescription; 5167 } 5168 5169 // For events with a [screen] location, translate into window coordinates 5170 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5171 mDragPoint.set(event.mX, event.mY); 5172 if (mTranslator != null) { 5173 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5174 } 5175 5176 if (mCurScrollY != 0) { 5177 mDragPoint.offset(0, mCurScrollY); 5178 } 5179 5180 event.mX = mDragPoint.x; 5181 event.mY = mDragPoint.y; 5182 } 5183 5184 // Remember who the current drag target is pre-dispatch 5185 final View prevDragView = mCurrentDragView; 5186 5187 // Now dispatch the drag/drop event 5188 boolean result = mView.dispatchDragEvent(event); 5189 5190 // If we changed apparent drag target, tell the OS about it 5191 if (prevDragView != mCurrentDragView) { 5192 try { 5193 if (prevDragView != null) { 5194 mWindowSession.dragRecipientExited(mWindow); 5195 } 5196 if (mCurrentDragView != null) { 5197 mWindowSession.dragRecipientEntered(mWindow); 5198 } 5199 } catch (RemoteException e) { 5200 Slog.e(TAG, "Unable to note drag target change"); 5201 } 5202 } 5203 5204 // Report the drop result when we're done 5205 if (what == DragEvent.ACTION_DROP) { 5206 mDragDescription = null; 5207 try { 5208 Log.i(TAG, "Reporting drop result: " + result); 5209 mWindowSession.reportDropResult(mWindow, result); 5210 } catch (RemoteException e) { 5211 Log.e(TAG, "Unable to report drop result"); 5212 } 5213 } 5214 5215 // When the drag operation ends, release any local state object 5216 // that may have been in use 5217 if (what == DragEvent.ACTION_DRAG_ENDED) { 5218 setLocalDragState(null); 5219 } 5220 } 5221 } 5222 event.recycle(); 5223 } 5224 5225 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5226 if (mSeq != args.seq) { 5227 // The sequence has changed, so we need to update our value and make 5228 // sure to do a traversal afterward so the window manager is given our 5229 // most recent data. 5230 mSeq = args.seq; 5231 mAttachInfo.mForceReportNewAttributes = true; 5232 scheduleTraversals(); 5233 } 5234 if (mView == null) return; 5235 if (args.localChanges != 0) { 5236 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5237 } 5238 5239 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5240 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5241 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5242 mView.dispatchSystemUiVisibilityChanged(visibility); 5243 } 5244 } 5245 5246 public void handleDispatchDoneAnimating() { 5247 if (mWindowsAnimating) { 5248 mWindowsAnimating = false; 5249 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5250 scheduleTraversals(); 5251 } 5252 } 5253 } 5254 5255 public void handleDispatchWindowShown() { 5256 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5257 } 5258 5259 public void getLastTouchPoint(Point outLocation) { 5260 outLocation.x = (int) mLastTouchPoint.x; 5261 outLocation.y = (int) mLastTouchPoint.y; 5262 } 5263 5264 public void setDragFocus(View newDragTarget) { 5265 if (mCurrentDragView != newDragTarget) { 5266 mCurrentDragView = newDragTarget; 5267 } 5268 } 5269 5270 private AudioManager getAudioManager() { 5271 if (mView == null) { 5272 throw new IllegalStateException("getAudioManager called when there is no mView"); 5273 } 5274 if (mAudioManager == null) { 5275 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5276 } 5277 return mAudioManager; 5278 } 5279 5280 public AccessibilityInteractionController getAccessibilityInteractionController() { 5281 if (mView == null) { 5282 throw new IllegalStateException("getAccessibilityInteractionController" 5283 + " called when there is no mView"); 5284 } 5285 if (mAccessibilityInteractionController == null) { 5286 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5287 } 5288 return mAccessibilityInteractionController; 5289 } 5290 5291 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5292 boolean insetsPending) throws RemoteException { 5293 5294 float appScale = mAttachInfo.mApplicationScale; 5295 boolean restore = false; 5296 if (params != null && mTranslator != null) { 5297 restore = true; 5298 params.backup(); 5299 mTranslator.translateWindowLayout(params); 5300 } 5301 if (params != null) { 5302 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5303 } 5304 mPendingConfiguration.seq = 0; 5305 //Log.d(TAG, ">>>>>> CALLING relayout"); 5306 if (params != null && mOrigWindowType != params.type) { 5307 // For compatibility with old apps, don't crash here. 5308 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5309 Slog.w(TAG, "Window type can not be changed after " 5310 + "the window is added; ignoring change of " + mView); 5311 params.type = mOrigWindowType; 5312 } 5313 } 5314 int relayoutResult = mWindowSession.relayout( 5315 mWindow, mSeq, params, 5316 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5317 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5318 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5319 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5320 mPendingStableInsets, mPendingConfiguration, mSurface); 5321 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5322 if (restore) { 5323 params.restore(); 5324 } 5325 5326 if (mTranslator != null) { 5327 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5328 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5329 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5330 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5331 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5332 } 5333 return relayoutResult; 5334 } 5335 5336 /** 5337 * {@inheritDoc} 5338 */ 5339 @Override 5340 public void playSoundEffect(int effectId) { 5341 checkThread(); 5342 5343 if (mMediaDisabled) { 5344 return; 5345 } 5346 5347 try { 5348 final AudioManager audioManager = getAudioManager(); 5349 5350 switch (effectId) { 5351 case SoundEffectConstants.CLICK: 5352 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5353 return; 5354 case SoundEffectConstants.NAVIGATION_DOWN: 5355 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5356 return; 5357 case SoundEffectConstants.NAVIGATION_LEFT: 5358 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5359 return; 5360 case SoundEffectConstants.NAVIGATION_RIGHT: 5361 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5362 return; 5363 case SoundEffectConstants.NAVIGATION_UP: 5364 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5365 return; 5366 default: 5367 throw new IllegalArgumentException("unknown effect id " + effectId + 5368 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5369 } 5370 } catch (IllegalStateException e) { 5371 // Exception thrown by getAudioManager() when mView is null 5372 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5373 e.printStackTrace(); 5374 } 5375 } 5376 5377 /** 5378 * {@inheritDoc} 5379 */ 5380 @Override 5381 public boolean performHapticFeedback(int effectId, boolean always) { 5382 try { 5383 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5384 } catch (RemoteException e) { 5385 return false; 5386 } 5387 } 5388 5389 /** 5390 * {@inheritDoc} 5391 */ 5392 @Override 5393 public View focusSearch(View focused, int direction) { 5394 checkThread(); 5395 if (!(mView instanceof ViewGroup)) { 5396 return null; 5397 } 5398 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5399 } 5400 5401 public void debug() { 5402 mView.debug(); 5403 } 5404 5405 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5406 String innerPrefix = prefix + " "; 5407 writer.print(prefix); writer.println("ViewRoot:"); 5408 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5409 writer.print(" mRemoved="); writer.println(mRemoved); 5410 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5411 writer.println(mConsumeBatchedInputScheduled); 5412 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5413 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5414 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5415 writer.println(mPendingInputEventCount); 5416 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5417 writer.println(mProcessInputEventsScheduled); 5418 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5419 writer.print(mTraversalScheduled); 5420 if (mTraversalScheduled) { 5421 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5422 } else { 5423 writer.println(); 5424 } 5425 mFirstInputStage.dump(innerPrefix, writer); 5426 5427 mChoreographer.dump(prefix, writer); 5428 5429 writer.print(prefix); writer.println("View Hierarchy:"); 5430 dumpViewHierarchy(innerPrefix, writer, mView); 5431 } 5432 5433 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5434 writer.print(prefix); 5435 if (view == null) { 5436 writer.println("null"); 5437 return; 5438 } 5439 writer.println(view.toString()); 5440 if (!(view instanceof ViewGroup)) { 5441 return; 5442 } 5443 ViewGroup grp = (ViewGroup)view; 5444 final int N = grp.getChildCount(); 5445 if (N <= 0) { 5446 return; 5447 } 5448 prefix = prefix + " "; 5449 for (int i=0; i<N; i++) { 5450 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5451 } 5452 } 5453 5454 public void dumpGfxInfo(int[] info) { 5455 info[0] = info[1] = 0; 5456 if (mView != null) { 5457 getGfxInfo(mView, info); 5458 } 5459 } 5460 5461 private static void getGfxInfo(View view, int[] info) { 5462 RenderNode renderNode = view.mRenderNode; 5463 info[0]++; 5464 if (renderNode != null) { 5465 info[1] += renderNode.getDebugSize(); 5466 } 5467 5468 if (view instanceof ViewGroup) { 5469 ViewGroup group = (ViewGroup) view; 5470 5471 int count = group.getChildCount(); 5472 for (int i = 0; i < count; i++) { 5473 getGfxInfo(group.getChildAt(i), info); 5474 } 5475 } 5476 } 5477 5478 /** 5479 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5480 * @return True, request has been queued. False, request has been completed. 5481 */ 5482 boolean die(boolean immediate) { 5483 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5484 // done by dispatchDetachedFromWindow will cause havoc on return. 5485 if (immediate && !mIsInTraversal) { 5486 doDie(); 5487 return false; 5488 } 5489 5490 if (!mIsDrawing) { 5491 destroyHardwareRenderer(); 5492 } else { 5493 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5494 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5495 } 5496 mHandler.sendEmptyMessage(MSG_DIE); 5497 return true; 5498 } 5499 5500 void doDie() { 5501 checkThread(); 5502 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5503 synchronized (this) { 5504 if (mRemoved) { 5505 return; 5506 } 5507 mRemoved = true; 5508 if (mAdded) { 5509 dispatchDetachedFromWindow(); 5510 } 5511 5512 if (mAdded && !mFirst) { 5513 destroyHardwareRenderer(); 5514 5515 if (mView != null) { 5516 int viewVisibility = mView.getVisibility(); 5517 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5518 if (mWindowAttributesChanged || viewVisibilityChanged) { 5519 // If layout params have been changed, first give them 5520 // to the window manager to make sure it has the correct 5521 // animation info. 5522 try { 5523 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5524 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5525 mWindowSession.finishDrawing(mWindow); 5526 } 5527 } catch (RemoteException e) { 5528 } 5529 } 5530 5531 mSurface.release(); 5532 } 5533 } 5534 5535 mAdded = false; 5536 } 5537 WindowManagerGlobal.getInstance().doRemoveView(this); 5538 } 5539 5540 public void requestUpdateConfiguration(Configuration config) { 5541 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5542 mHandler.sendMessage(msg); 5543 } 5544 5545 public void loadSystemProperties() { 5546 mHandler.post(new Runnable() { 5547 @Override 5548 public void run() { 5549 // Profiling 5550 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5551 profileRendering(mAttachInfo.mHasWindowFocus); 5552 5553 // Media (used by sound effects) 5554 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5555 5556 // Hardware rendering 5557 if (mAttachInfo.mHardwareRenderer != null) { 5558 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5559 invalidate(); 5560 } 5561 } 5562 5563 // Layout debugging 5564 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5565 if (layout != mAttachInfo.mDebugLayout) { 5566 mAttachInfo.mDebugLayout = layout; 5567 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5568 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5569 } 5570 } 5571 5572 // detect emulator 5573 mIsEmulator = Build.HARDWARE.contains("goldfish"); 5574 mIsCircularEmulator = 5575 SystemProperties.getBoolean(PROPERTY_EMULATOR_CIRCULAR, false); 5576 } 5577 }); 5578 } 5579 5580 private void destroyHardwareRenderer() { 5581 HardwareRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5582 5583 if (hardwareRenderer != null) { 5584 if (mView != null) { 5585 hardwareRenderer.destroyHardwareResources(mView); 5586 } 5587 hardwareRenderer.destroy(); 5588 hardwareRenderer.setRequested(false); 5589 5590 mAttachInfo.mHardwareRenderer = null; 5591 mAttachInfo.mHardwareAccelerated = false; 5592 } 5593 } 5594 5595 public void dispatchFinishInputConnection(InputConnection connection) { 5596 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5597 mHandler.sendMessage(msg); 5598 } 5599 5600 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5601 Rect visibleInsets, Rect stableInsets, boolean reportDraw, Configuration newConfig) { 5602 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5603 + " contentInsets=" + contentInsets.toShortString() 5604 + " visibleInsets=" + visibleInsets.toShortString() 5605 + " reportDraw=" + reportDraw); 5606 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5607 if (mTranslator != null) { 5608 mTranslator.translateRectInScreenToAppWindow(frame); 5609 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5610 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5611 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5612 } 5613 SomeArgs args = SomeArgs.obtain(); 5614 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5615 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5616 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5617 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5618 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5619 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5620 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5621 msg.obj = args; 5622 mHandler.sendMessage(msg); 5623 } 5624 5625 public void dispatchMoved(int newX, int newY) { 5626 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5627 if (mTranslator != null) { 5628 PointF point = new PointF(newX, newY); 5629 mTranslator.translatePointInScreenToAppWindow(point); 5630 newX = (int) (point.x + 0.5); 5631 newY = (int) (point.y + 0.5); 5632 } 5633 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5634 mHandler.sendMessage(msg); 5635 } 5636 5637 /** 5638 * Represents a pending input event that is waiting in a queue. 5639 * 5640 * Input events are processed in serial order by the timestamp specified by 5641 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5642 * one input event to the application at a time and waits for the application 5643 * to finish handling it before delivering the next one. 5644 * 5645 * However, because the application or IME can synthesize and inject multiple 5646 * key events at a time without going through the input dispatcher, we end up 5647 * needing a queue on the application's side. 5648 */ 5649 private static final class QueuedInputEvent { 5650 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5651 public static final int FLAG_DEFERRED = 1 << 1; 5652 public static final int FLAG_FINISHED = 1 << 2; 5653 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5654 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5655 public static final int FLAG_UNHANDLED = 1 << 5; 5656 5657 public QueuedInputEvent mNext; 5658 5659 public InputEvent mEvent; 5660 public InputEventReceiver mReceiver; 5661 public int mFlags; 5662 5663 public boolean shouldSkipIme() { 5664 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5665 return true; 5666 } 5667 return mEvent instanceof MotionEvent 5668 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5669 } 5670 5671 public boolean shouldSendToSynthesizer() { 5672 if ((mFlags & FLAG_UNHANDLED) != 0) { 5673 return true; 5674 } 5675 5676 return false; 5677 } 5678 5679 @Override 5680 public String toString() { 5681 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5682 boolean hasPrevious = false; 5683 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5684 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5685 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5686 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5687 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5688 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5689 if (!hasPrevious) { 5690 sb.append("0"); 5691 } 5692 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5693 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5694 sb.append(", mEvent=" + mEvent + "}"); 5695 return sb.toString(); 5696 } 5697 5698 private boolean flagToString(String name, int flag, 5699 boolean hasPrevious, StringBuilder sb) { 5700 if ((mFlags & flag) != 0) { 5701 if (hasPrevious) { 5702 sb.append("|"); 5703 } 5704 sb.append(name); 5705 return true; 5706 } 5707 return hasPrevious; 5708 } 5709 } 5710 5711 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5712 InputEventReceiver receiver, int flags) { 5713 QueuedInputEvent q = mQueuedInputEventPool; 5714 if (q != null) { 5715 mQueuedInputEventPoolSize -= 1; 5716 mQueuedInputEventPool = q.mNext; 5717 q.mNext = null; 5718 } else { 5719 q = new QueuedInputEvent(); 5720 } 5721 5722 q.mEvent = event; 5723 q.mReceiver = receiver; 5724 q.mFlags = flags; 5725 return q; 5726 } 5727 5728 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5729 q.mEvent = null; 5730 q.mReceiver = null; 5731 5732 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5733 mQueuedInputEventPoolSize += 1; 5734 q.mNext = mQueuedInputEventPool; 5735 mQueuedInputEventPool = q; 5736 } 5737 } 5738 5739 void enqueueInputEvent(InputEvent event) { 5740 enqueueInputEvent(event, null, 0, false); 5741 } 5742 5743 void enqueueInputEvent(InputEvent event, 5744 InputEventReceiver receiver, int flags, boolean processImmediately) { 5745 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5746 5747 // Always enqueue the input event in order, regardless of its time stamp. 5748 // We do this because the application or the IME may inject key events 5749 // in response to touch events and we want to ensure that the injected keys 5750 // are processed in the order they were received and we cannot trust that 5751 // the time stamp of injected events are monotonic. 5752 QueuedInputEvent last = mPendingInputEventTail; 5753 if (last == null) { 5754 mPendingInputEventHead = q; 5755 mPendingInputEventTail = q; 5756 } else { 5757 last.mNext = q; 5758 mPendingInputEventTail = q; 5759 } 5760 mPendingInputEventCount += 1; 5761 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5762 mPendingInputEventCount); 5763 5764 if (processImmediately) { 5765 doProcessInputEvents(); 5766 } else { 5767 scheduleProcessInputEvents(); 5768 } 5769 } 5770 5771 private void scheduleProcessInputEvents() { 5772 if (!mProcessInputEventsScheduled) { 5773 mProcessInputEventsScheduled = true; 5774 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5775 msg.setAsynchronous(true); 5776 mHandler.sendMessage(msg); 5777 } 5778 } 5779 5780 void doProcessInputEvents() { 5781 // Deliver all pending input events in the queue. 5782 while (mPendingInputEventHead != null) { 5783 QueuedInputEvent q = mPendingInputEventHead; 5784 mPendingInputEventHead = q.mNext; 5785 if (mPendingInputEventHead == null) { 5786 mPendingInputEventTail = null; 5787 } 5788 q.mNext = null; 5789 5790 mPendingInputEventCount -= 1; 5791 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5792 mPendingInputEventCount); 5793 5794 deliverInputEvent(q); 5795 } 5796 5797 // We are done processing all input events that we can process right now 5798 // so we can clear the pending flag immediately. 5799 if (mProcessInputEventsScheduled) { 5800 mProcessInputEventsScheduled = false; 5801 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5802 } 5803 } 5804 5805 private void deliverInputEvent(QueuedInputEvent q) { 5806 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5807 q.mEvent.getSequenceNumber()); 5808 if (mInputEventConsistencyVerifier != null) { 5809 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5810 } 5811 5812 InputStage stage; 5813 if (q.shouldSendToSynthesizer()) { 5814 stage = mSyntheticInputStage; 5815 } else { 5816 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5817 } 5818 5819 if (stage != null) { 5820 stage.deliver(q); 5821 } else { 5822 finishInputEvent(q); 5823 } 5824 } 5825 5826 private void finishInputEvent(QueuedInputEvent q) { 5827 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5828 q.mEvent.getSequenceNumber()); 5829 5830 if (q.mReceiver != null) { 5831 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5832 q.mReceiver.finishInputEvent(q.mEvent, handled); 5833 } else { 5834 q.mEvent.recycleIfNeededAfterDispatch(); 5835 } 5836 5837 recycleQueuedInputEvent(q); 5838 } 5839 5840 static boolean isTerminalInputEvent(InputEvent event) { 5841 if (event instanceof KeyEvent) { 5842 final KeyEvent keyEvent = (KeyEvent)event; 5843 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5844 } else { 5845 final MotionEvent motionEvent = (MotionEvent)event; 5846 final int action = motionEvent.getAction(); 5847 return action == MotionEvent.ACTION_UP 5848 || action == MotionEvent.ACTION_CANCEL 5849 || action == MotionEvent.ACTION_HOVER_EXIT; 5850 } 5851 } 5852 5853 void scheduleConsumeBatchedInput() { 5854 if (!mConsumeBatchedInputScheduled) { 5855 mConsumeBatchedInputScheduled = true; 5856 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5857 mConsumedBatchedInputRunnable, null); 5858 } 5859 } 5860 5861 void unscheduleConsumeBatchedInput() { 5862 if (mConsumeBatchedInputScheduled) { 5863 mConsumeBatchedInputScheduled = false; 5864 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5865 mConsumedBatchedInputRunnable, null); 5866 } 5867 } 5868 5869 void scheduleConsumeBatchedInputImmediately() { 5870 if (!mConsumeBatchedInputImmediatelyScheduled) { 5871 unscheduleConsumeBatchedInput(); 5872 mConsumeBatchedInputImmediatelyScheduled = true; 5873 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 5874 } 5875 } 5876 5877 void doConsumeBatchedInput(long frameTimeNanos) { 5878 if (mConsumeBatchedInputScheduled) { 5879 mConsumeBatchedInputScheduled = false; 5880 if (mInputEventReceiver != null) { 5881 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 5882 && frameTimeNanos != -1) { 5883 // If we consumed a batch here, we want to go ahead and schedule the 5884 // consumption of batched input events on the next frame. Otherwise, we would 5885 // wait until we have more input events pending and might get starved by other 5886 // things occurring in the process. If the frame time is -1, however, then 5887 // we're in a non-batching mode, so there's no need to schedule this. 5888 scheduleConsumeBatchedInput(); 5889 } 5890 } 5891 doProcessInputEvents(); 5892 } 5893 } 5894 5895 final class TraversalRunnable implements Runnable { 5896 @Override 5897 public void run() { 5898 doTraversal(); 5899 } 5900 } 5901 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5902 5903 final class WindowInputEventReceiver extends InputEventReceiver { 5904 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5905 super(inputChannel, looper); 5906 } 5907 5908 @Override 5909 public void onInputEvent(InputEvent event) { 5910 enqueueInputEvent(event, this, 0, true); 5911 } 5912 5913 @Override 5914 public void onBatchedInputEventPending() { 5915 if (mUnbufferedInputDispatch) { 5916 super.onBatchedInputEventPending(); 5917 } else { 5918 scheduleConsumeBatchedInput(); 5919 } 5920 } 5921 5922 @Override 5923 public void dispose() { 5924 unscheduleConsumeBatchedInput(); 5925 super.dispose(); 5926 } 5927 } 5928 WindowInputEventReceiver mInputEventReceiver; 5929 5930 final class ConsumeBatchedInputRunnable implements Runnable { 5931 @Override 5932 public void run() { 5933 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5934 } 5935 } 5936 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5937 new ConsumeBatchedInputRunnable(); 5938 boolean mConsumeBatchedInputScheduled; 5939 5940 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 5941 @Override 5942 public void run() { 5943 doConsumeBatchedInput(-1); 5944 } 5945 } 5946 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 5947 new ConsumeBatchedInputImmediatelyRunnable(); 5948 boolean mConsumeBatchedInputImmediatelyScheduled; 5949 5950 final class InvalidateOnAnimationRunnable implements Runnable { 5951 private boolean mPosted; 5952 private final ArrayList<View> mViews = new ArrayList<View>(); 5953 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5954 new ArrayList<AttachInfo.InvalidateInfo>(); 5955 private View[] mTempViews; 5956 private AttachInfo.InvalidateInfo[] mTempViewRects; 5957 5958 public void addView(View view) { 5959 synchronized (this) { 5960 mViews.add(view); 5961 postIfNeededLocked(); 5962 } 5963 } 5964 5965 public void addViewRect(AttachInfo.InvalidateInfo info) { 5966 synchronized (this) { 5967 mViewRects.add(info); 5968 postIfNeededLocked(); 5969 } 5970 } 5971 5972 public void removeView(View view) { 5973 synchronized (this) { 5974 mViews.remove(view); 5975 5976 for (int i = mViewRects.size(); i-- > 0; ) { 5977 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5978 if (info.target == view) { 5979 mViewRects.remove(i); 5980 info.recycle(); 5981 } 5982 } 5983 5984 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5985 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5986 mPosted = false; 5987 } 5988 } 5989 } 5990 5991 @Override 5992 public void run() { 5993 final int viewCount; 5994 final int viewRectCount; 5995 synchronized (this) { 5996 mPosted = false; 5997 5998 viewCount = mViews.size(); 5999 if (viewCount != 0) { 6000 mTempViews = mViews.toArray(mTempViews != null 6001 ? mTempViews : new View[viewCount]); 6002 mViews.clear(); 6003 } 6004 6005 viewRectCount = mViewRects.size(); 6006 if (viewRectCount != 0) { 6007 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6008 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6009 mViewRects.clear(); 6010 } 6011 } 6012 6013 for (int i = 0; i < viewCount; i++) { 6014 mTempViews[i].invalidate(); 6015 mTempViews[i] = null; 6016 } 6017 6018 for (int i = 0; i < viewRectCount; i++) { 6019 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6020 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6021 info.recycle(); 6022 } 6023 } 6024 6025 private void postIfNeededLocked() { 6026 if (!mPosted) { 6027 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6028 mPosted = true; 6029 } 6030 } 6031 } 6032 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6033 new InvalidateOnAnimationRunnable(); 6034 6035 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6036 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6037 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6038 } 6039 6040 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6041 long delayMilliseconds) { 6042 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6043 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6044 } 6045 6046 public void dispatchInvalidateOnAnimation(View view) { 6047 mInvalidateOnAnimationRunnable.addView(view); 6048 } 6049 6050 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6051 mInvalidateOnAnimationRunnable.addViewRect(info); 6052 } 6053 6054 public void cancelInvalidate(View view) { 6055 mHandler.removeMessages(MSG_INVALIDATE, view); 6056 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6057 // them to the pool 6058 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6059 mInvalidateOnAnimationRunnable.removeView(view); 6060 } 6061 6062 public void dispatchInputEvent(InputEvent event) { 6063 dispatchInputEvent(event, null); 6064 } 6065 6066 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6067 SomeArgs args = SomeArgs.obtain(); 6068 args.arg1 = event; 6069 args.arg2 = receiver; 6070 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6071 msg.setAsynchronous(true); 6072 mHandler.sendMessage(msg); 6073 } 6074 6075 public void synthesizeInputEvent(InputEvent event) { 6076 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6077 msg.setAsynchronous(true); 6078 mHandler.sendMessage(msg); 6079 } 6080 6081 public void dispatchKeyFromIme(KeyEvent event) { 6082 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6083 msg.setAsynchronous(true); 6084 mHandler.sendMessage(msg); 6085 } 6086 6087 /** 6088 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6089 * 6090 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6091 * passes in. 6092 */ 6093 public void dispatchUnhandledInputEvent(InputEvent event) { 6094 if (event instanceof MotionEvent) { 6095 event = MotionEvent.obtain((MotionEvent) event); 6096 } 6097 synthesizeInputEvent(event); 6098 } 6099 6100 public void dispatchAppVisibility(boolean visible) { 6101 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6102 msg.arg1 = visible ? 1 : 0; 6103 mHandler.sendMessage(msg); 6104 } 6105 6106 public void dispatchGetNewSurface() { 6107 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6108 mHandler.sendMessage(msg); 6109 } 6110 6111 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6112 Message msg = Message.obtain(); 6113 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6114 msg.arg1 = hasFocus ? 1 : 0; 6115 msg.arg2 = inTouchMode ? 1 : 0; 6116 mHandler.sendMessage(msg); 6117 } 6118 6119 public void dispatchWindowShown() { 6120 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6121 } 6122 6123 public void dispatchCloseSystemDialogs(String reason) { 6124 Message msg = Message.obtain(); 6125 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6126 msg.obj = reason; 6127 mHandler.sendMessage(msg); 6128 } 6129 6130 public void dispatchDragEvent(DragEvent event) { 6131 final int what; 6132 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6133 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6134 mHandler.removeMessages(what); 6135 } else { 6136 what = MSG_DISPATCH_DRAG_EVENT; 6137 } 6138 Message msg = mHandler.obtainMessage(what, event); 6139 mHandler.sendMessage(msg); 6140 } 6141 6142 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6143 int localValue, int localChanges) { 6144 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6145 args.seq = seq; 6146 args.globalVisibility = globalVisibility; 6147 args.localValue = localValue; 6148 args.localChanges = localChanges; 6149 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6150 } 6151 6152 public void dispatchDoneAnimating() { 6153 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 6154 } 6155 6156 public void dispatchCheckFocus() { 6157 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6158 // This will result in a call to checkFocus() below. 6159 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6160 } 6161 } 6162 6163 /** 6164 * Post a callback to send a 6165 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6166 * This event is send at most once every 6167 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6168 */ 6169 private void postSendWindowContentChangedCallback(View source, int changeType) { 6170 if (mSendWindowContentChangedAccessibilityEvent == null) { 6171 mSendWindowContentChangedAccessibilityEvent = 6172 new SendWindowContentChangedAccessibilityEvent(); 6173 } 6174 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6175 } 6176 6177 /** 6178 * Remove a posted callback to send a 6179 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6180 */ 6181 private void removeSendWindowContentChangedCallback() { 6182 if (mSendWindowContentChangedAccessibilityEvent != null) { 6183 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6184 } 6185 } 6186 6187 @Override 6188 public boolean showContextMenuForChild(View originalView) { 6189 return false; 6190 } 6191 6192 @Override 6193 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6194 return null; 6195 } 6196 6197 @Override 6198 public void createContextMenu(ContextMenu menu) { 6199 } 6200 6201 @Override 6202 public void childDrawableStateChanged(View child) { 6203 } 6204 6205 @Override 6206 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6207 if (mView == null) { 6208 return false; 6209 } 6210 // Intercept accessibility focus events fired by virtual nodes to keep 6211 // track of accessibility focus position in such nodes. 6212 final int eventType = event.getEventType(); 6213 switch (eventType) { 6214 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6215 final long sourceNodeId = event.getSourceNodeId(); 6216 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6217 sourceNodeId); 6218 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6219 if (source != null) { 6220 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6221 if (provider != null) { 6222 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6223 sourceNodeId); 6224 final AccessibilityNodeInfo node; 6225 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6226 node = provider.createAccessibilityNodeInfo( 6227 AccessibilityNodeProvider.HOST_VIEW_ID); 6228 } else { 6229 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6230 } 6231 setAccessibilityFocus(source, node); 6232 } 6233 } 6234 } break; 6235 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6236 final long sourceNodeId = event.getSourceNodeId(); 6237 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6238 sourceNodeId); 6239 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6240 if (source != null) { 6241 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6242 if (provider != null) { 6243 setAccessibilityFocus(null, null); 6244 } 6245 } 6246 } break; 6247 6248 6249 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6250 if (mAccessibilityFocusedHost != null && mAccessibilityFocusedVirtualView != null) { 6251 // We care only for changes rooted in the focused host. 6252 final long eventSourceId = event.getSourceNodeId(); 6253 final int hostViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6254 eventSourceId); 6255 if (hostViewId != mAccessibilityFocusedHost.getAccessibilityViewId()) { 6256 break; 6257 } 6258 6259 // We only care about changes that may change the virtual focused view bounds. 6260 final int changes = event.getContentChangeTypes(); 6261 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) != 0 6262 || changes == AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6263 AccessibilityNodeProvider provider = mAccessibilityFocusedHost 6264 .getAccessibilityNodeProvider(); 6265 if (provider != null) { 6266 final int virtualChildId = AccessibilityNodeInfo.getVirtualDescendantId( 6267 mAccessibilityFocusedVirtualView.getSourceNodeId()); 6268 if (virtualChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6269 mAccessibilityFocusedVirtualView = provider 6270 .createAccessibilityNodeInfo( 6271 AccessibilityNodeProvider.HOST_VIEW_ID); 6272 } else { 6273 mAccessibilityFocusedVirtualView = provider 6274 .createAccessibilityNodeInfo(virtualChildId); 6275 } 6276 } 6277 } 6278 } 6279 } break; 6280 } 6281 mAccessibilityManager.sendAccessibilityEvent(event); 6282 return true; 6283 } 6284 6285 @Override 6286 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6287 postSendWindowContentChangedCallback(source, changeType); 6288 } 6289 6290 @Override 6291 public boolean canResolveLayoutDirection() { 6292 return true; 6293 } 6294 6295 @Override 6296 public boolean isLayoutDirectionResolved() { 6297 return true; 6298 } 6299 6300 @Override 6301 public int getLayoutDirection() { 6302 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6303 } 6304 6305 @Override 6306 public boolean canResolveTextDirection() { 6307 return true; 6308 } 6309 6310 @Override 6311 public boolean isTextDirectionResolved() { 6312 return true; 6313 } 6314 6315 @Override 6316 public int getTextDirection() { 6317 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6318 } 6319 6320 @Override 6321 public boolean canResolveTextAlignment() { 6322 return true; 6323 } 6324 6325 @Override 6326 public boolean isTextAlignmentResolved() { 6327 return true; 6328 } 6329 6330 @Override 6331 public int getTextAlignment() { 6332 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6333 } 6334 6335 private View getCommonPredecessor(View first, View second) { 6336 if (mTempHashSet == null) { 6337 mTempHashSet = new HashSet<View>(); 6338 } 6339 HashSet<View> seen = mTempHashSet; 6340 seen.clear(); 6341 View firstCurrent = first; 6342 while (firstCurrent != null) { 6343 seen.add(firstCurrent); 6344 ViewParent firstCurrentParent = firstCurrent.mParent; 6345 if (firstCurrentParent instanceof View) { 6346 firstCurrent = (View) firstCurrentParent; 6347 } else { 6348 firstCurrent = null; 6349 } 6350 } 6351 View secondCurrent = second; 6352 while (secondCurrent != null) { 6353 if (seen.contains(secondCurrent)) { 6354 seen.clear(); 6355 return secondCurrent; 6356 } 6357 ViewParent secondCurrentParent = secondCurrent.mParent; 6358 if (secondCurrentParent instanceof View) { 6359 secondCurrent = (View) secondCurrentParent; 6360 } else { 6361 secondCurrent = null; 6362 } 6363 } 6364 seen.clear(); 6365 return null; 6366 } 6367 6368 void checkThread() { 6369 if (mThread != Thread.currentThread()) { 6370 throw new CalledFromWrongThreadException( 6371 "Only the original thread that created a view hierarchy can touch its views."); 6372 } 6373 } 6374 6375 @Override 6376 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6377 // ViewAncestor never intercepts touch event, so this can be a no-op 6378 } 6379 6380 @Override 6381 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6382 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6383 if (rectangle != null) { 6384 mTempRect.set(rectangle); 6385 mTempRect.offset(0, -mCurScrollY); 6386 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6387 try { 6388 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6389 } catch (RemoteException re) { 6390 /* ignore */ 6391 } 6392 } 6393 return scrolled; 6394 } 6395 6396 @Override 6397 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6398 // Do nothing. 6399 } 6400 6401 @Override 6402 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6403 return false; 6404 } 6405 6406 @Override 6407 public void onStopNestedScroll(View target) { 6408 } 6409 6410 @Override 6411 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6412 } 6413 6414 @Override 6415 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6416 int dxUnconsumed, int dyUnconsumed) { 6417 } 6418 6419 @Override 6420 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6421 } 6422 6423 @Override 6424 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6425 return false; 6426 } 6427 6428 @Override 6429 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6430 return false; 6431 } 6432 6433 @Override 6434 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6435 return false; 6436 } 6437 6438 void changeCanvasOpacity(boolean opaque) { 6439 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6440 if (mAttachInfo.mHardwareRenderer != null) { 6441 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6442 } 6443 } 6444 6445 class TakenSurfaceHolder extends BaseSurfaceHolder { 6446 @Override 6447 public boolean onAllowLockCanvas() { 6448 return mDrawingAllowed; 6449 } 6450 6451 @Override 6452 public void onRelayoutContainer() { 6453 // Not currently interesting -- from changing between fixed and layout size. 6454 } 6455 6456 @Override 6457 public void setFormat(int format) { 6458 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6459 } 6460 6461 @Override 6462 public void setType(int type) { 6463 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6464 } 6465 6466 @Override 6467 public void onUpdateSurface() { 6468 // We take care of format and type changes on our own. 6469 throw new IllegalStateException("Shouldn't be here"); 6470 } 6471 6472 @Override 6473 public boolean isCreating() { 6474 return mIsCreating; 6475 } 6476 6477 @Override 6478 public void setFixedSize(int width, int height) { 6479 throw new UnsupportedOperationException( 6480 "Currently only support sizing from layout"); 6481 } 6482 6483 @Override 6484 public void setKeepScreenOn(boolean screenOn) { 6485 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6486 } 6487 } 6488 6489 static class W extends IWindow.Stub { 6490 private final WeakReference<ViewRootImpl> mViewAncestor; 6491 private final IWindowSession mWindowSession; 6492 6493 W(ViewRootImpl viewAncestor) { 6494 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6495 mWindowSession = viewAncestor.mWindowSession; 6496 } 6497 6498 @Override 6499 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6500 Rect visibleInsets, Rect stableInsets, boolean reportDraw, 6501 Configuration newConfig) { 6502 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6503 if (viewAncestor != null) { 6504 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6505 visibleInsets, stableInsets, reportDraw, newConfig); 6506 } 6507 } 6508 6509 @Override 6510 public void moved(int newX, int newY) { 6511 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6512 if (viewAncestor != null) { 6513 viewAncestor.dispatchMoved(newX, newY); 6514 } 6515 } 6516 6517 @Override 6518 public void dispatchAppVisibility(boolean visible) { 6519 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6520 if (viewAncestor != null) { 6521 viewAncestor.dispatchAppVisibility(visible); 6522 } 6523 } 6524 6525 @Override 6526 public void dispatchGetNewSurface() { 6527 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6528 if (viewAncestor != null) { 6529 viewAncestor.dispatchGetNewSurface(); 6530 } 6531 } 6532 6533 @Override 6534 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6535 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6536 if (viewAncestor != null) { 6537 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6538 } 6539 } 6540 6541 private static int checkCallingPermission(String permission) { 6542 try { 6543 return ActivityManagerNative.getDefault().checkPermission( 6544 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6545 } catch (RemoteException e) { 6546 return PackageManager.PERMISSION_DENIED; 6547 } 6548 } 6549 6550 @Override 6551 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6552 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6553 if (viewAncestor != null) { 6554 final View view = viewAncestor.mView; 6555 if (view != null) { 6556 if (checkCallingPermission(Manifest.permission.DUMP) != 6557 PackageManager.PERMISSION_GRANTED) { 6558 throw new SecurityException("Insufficient permissions to invoke" 6559 + " executeCommand() from pid=" + Binder.getCallingPid() 6560 + ", uid=" + Binder.getCallingUid()); 6561 } 6562 6563 OutputStream clientStream = null; 6564 try { 6565 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6566 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6567 } catch (IOException e) { 6568 e.printStackTrace(); 6569 } finally { 6570 if (clientStream != null) { 6571 try { 6572 clientStream.close(); 6573 } catch (IOException e) { 6574 e.printStackTrace(); 6575 } 6576 } 6577 } 6578 } 6579 } 6580 } 6581 6582 @Override 6583 public void closeSystemDialogs(String reason) { 6584 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6585 if (viewAncestor != null) { 6586 viewAncestor.dispatchCloseSystemDialogs(reason); 6587 } 6588 } 6589 6590 @Override 6591 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6592 boolean sync) { 6593 if (sync) { 6594 try { 6595 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6596 } catch (RemoteException e) { 6597 } 6598 } 6599 } 6600 6601 @Override 6602 public void dispatchWallpaperCommand(String action, int x, int y, 6603 int z, Bundle extras, boolean sync) { 6604 if (sync) { 6605 try { 6606 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6607 } catch (RemoteException e) { 6608 } 6609 } 6610 } 6611 6612 /* Drag/drop */ 6613 @Override 6614 public void dispatchDragEvent(DragEvent event) { 6615 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6616 if (viewAncestor != null) { 6617 viewAncestor.dispatchDragEvent(event); 6618 } 6619 } 6620 6621 @Override 6622 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6623 int localValue, int localChanges) { 6624 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6625 if (viewAncestor != null) { 6626 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6627 localValue, localChanges); 6628 } 6629 } 6630 6631 @Override 6632 public void doneAnimating() { 6633 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6634 if (viewAncestor != null) { 6635 viewAncestor.dispatchDoneAnimating(); 6636 } 6637 } 6638 6639 @Override 6640 public void dispatchWindowShown() { 6641 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6642 if (viewAncestor != null) { 6643 viewAncestor.dispatchWindowShown(); 6644 } 6645 } 6646 } 6647 6648 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6649 public CalledFromWrongThreadException(String msg) { 6650 super(msg); 6651 } 6652 } 6653 6654 static RunQueue getRunQueue() { 6655 RunQueue rq = sRunQueues.get(); 6656 if (rq != null) { 6657 return rq; 6658 } 6659 rq = new RunQueue(); 6660 sRunQueues.set(rq); 6661 return rq; 6662 } 6663 6664 /** 6665 * The run queue is used to enqueue pending work from Views when no Handler is 6666 * attached. The work is executed during the next call to performTraversals on 6667 * the thread. 6668 * @hide 6669 */ 6670 static final class RunQueue { 6671 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6672 6673 void post(Runnable action) { 6674 postDelayed(action, 0); 6675 } 6676 6677 void postDelayed(Runnable action, long delayMillis) { 6678 HandlerAction handlerAction = new HandlerAction(); 6679 handlerAction.action = action; 6680 handlerAction.delay = delayMillis; 6681 6682 synchronized (mActions) { 6683 mActions.add(handlerAction); 6684 } 6685 } 6686 6687 void removeCallbacks(Runnable action) { 6688 final HandlerAction handlerAction = new HandlerAction(); 6689 handlerAction.action = action; 6690 6691 synchronized (mActions) { 6692 final ArrayList<HandlerAction> actions = mActions; 6693 6694 while (actions.remove(handlerAction)) { 6695 // Keep going 6696 } 6697 } 6698 } 6699 6700 void executeActions(Handler handler) { 6701 synchronized (mActions) { 6702 final ArrayList<HandlerAction> actions = mActions; 6703 final int count = actions.size(); 6704 6705 for (int i = 0; i < count; i++) { 6706 final HandlerAction handlerAction = actions.get(i); 6707 handler.postDelayed(handlerAction.action, handlerAction.delay); 6708 } 6709 6710 actions.clear(); 6711 } 6712 } 6713 6714 private static class HandlerAction { 6715 Runnable action; 6716 long delay; 6717 6718 @Override 6719 public boolean equals(Object o) { 6720 if (this == o) return true; 6721 if (o == null || getClass() != o.getClass()) return false; 6722 6723 HandlerAction that = (HandlerAction) o; 6724 return !(action != null ? !action.equals(that.action) : that.action != null); 6725 6726 } 6727 6728 @Override 6729 public int hashCode() { 6730 int result = action != null ? action.hashCode() : 0; 6731 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6732 return result; 6733 } 6734 } 6735 } 6736 6737 /** 6738 * Class for managing the accessibility interaction connection 6739 * based on the global accessibility state. 6740 */ 6741 final class AccessibilityInteractionConnectionManager 6742 implements AccessibilityStateChangeListener { 6743 @Override 6744 public void onAccessibilityStateChanged(boolean enabled) { 6745 if (enabled) { 6746 ensureConnection(); 6747 if (mAttachInfo.mHasWindowFocus) { 6748 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6749 View focusedView = mView.findFocus(); 6750 if (focusedView != null && focusedView != mView) { 6751 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6752 } 6753 } 6754 } else { 6755 ensureNoConnection(); 6756 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6757 } 6758 } 6759 6760 public void ensureConnection() { 6761 final boolean registered = 6762 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6763 if (!registered) { 6764 mAttachInfo.mAccessibilityWindowId = 6765 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6766 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6767 } 6768 } 6769 6770 public void ensureNoConnection() { 6771 final boolean registered = 6772 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6773 if (registered) { 6774 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6775 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6776 } 6777 } 6778 } 6779 6780 final class HighContrastTextManager implements HighTextContrastChangeListener { 6781 HighContrastTextManager() { 6782 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 6783 } 6784 @Override 6785 public void onHighTextContrastStateChanged(boolean enabled) { 6786 mAttachInfo.mHighContrastText = enabled; 6787 6788 // Destroy Displaylists so they can be recreated with high contrast recordings 6789 destroyHardwareResources(); 6790 6791 // Schedule redraw, which will rerecord + redraw all text 6792 invalidate(); 6793 } 6794 } 6795 6796 /** 6797 * This class is an interface this ViewAncestor provides to the 6798 * AccessibilityManagerService to the latter can interact with 6799 * the view hierarchy in this ViewAncestor. 6800 */ 6801 static final class AccessibilityInteractionConnection 6802 extends IAccessibilityInteractionConnection.Stub { 6803 private final WeakReference<ViewRootImpl> mViewRootImpl; 6804 6805 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6806 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6807 } 6808 6809 @Override 6810 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6811 Region interactiveRegion, int interactionId, 6812 IAccessibilityInteractionConnectionCallback callback, int flags, 6813 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6814 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6815 if (viewRootImpl != null && viewRootImpl.mView != null) { 6816 viewRootImpl.getAccessibilityInteractionController() 6817 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6818 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6819 interrogatingTid, spec); 6820 } else { 6821 // We cannot make the call and notify the caller so it does not wait. 6822 try { 6823 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6824 } catch (RemoteException re) { 6825 /* best effort - ignore */ 6826 } 6827 } 6828 } 6829 6830 @Override 6831 public void performAccessibilityAction(long accessibilityNodeId, int action, 6832 Bundle arguments, int interactionId, 6833 IAccessibilityInteractionConnectionCallback callback, int flags, 6834 int interrogatingPid, long interrogatingTid) { 6835 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6836 if (viewRootImpl != null && viewRootImpl.mView != null) { 6837 viewRootImpl.getAccessibilityInteractionController() 6838 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6839 interactionId, callback, flags, interrogatingPid, interrogatingTid); 6840 } else { 6841 // We cannot make the call and notify the caller so it does not wait. 6842 try { 6843 callback.setPerformAccessibilityActionResult(false, interactionId); 6844 } catch (RemoteException re) { 6845 /* best effort - ignore */ 6846 } 6847 } 6848 } 6849 6850 @Override 6851 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6852 String viewId, Region interactiveRegion, int interactionId, 6853 IAccessibilityInteractionConnectionCallback callback, int flags, 6854 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6855 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6856 if (viewRootImpl != null && viewRootImpl.mView != null) { 6857 viewRootImpl.getAccessibilityInteractionController() 6858 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6859 viewId, interactiveRegion, interactionId, callback, flags, 6860 interrogatingPid, interrogatingTid, spec); 6861 } else { 6862 // We cannot make the call and notify the caller so it does not wait. 6863 try { 6864 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6865 } catch (RemoteException re) { 6866 /* best effort - ignore */ 6867 } 6868 } 6869 } 6870 6871 @Override 6872 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6873 Region interactiveRegion, int interactionId, 6874 IAccessibilityInteractionConnectionCallback callback, int flags, 6875 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6876 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6877 if (viewRootImpl != null && viewRootImpl.mView != null) { 6878 viewRootImpl.getAccessibilityInteractionController() 6879 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6880 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6881 interrogatingTid, spec); 6882 } else { 6883 // We cannot make the call and notify the caller so it does not wait. 6884 try { 6885 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6886 } catch (RemoteException re) { 6887 /* best effort - ignore */ 6888 } 6889 } 6890 } 6891 6892 @Override 6893 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 6894 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6895 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6896 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6897 if (viewRootImpl != null && viewRootImpl.mView != null) { 6898 viewRootImpl.getAccessibilityInteractionController() 6899 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 6900 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6901 spec); 6902 } else { 6903 // We cannot make the call and notify the caller so it does not wait. 6904 try { 6905 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6906 } catch (RemoteException re) { 6907 /* best effort - ignore */ 6908 } 6909 } 6910 } 6911 6912 @Override 6913 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 6914 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6915 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6916 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6917 if (viewRootImpl != null && viewRootImpl.mView != null) { 6918 viewRootImpl.getAccessibilityInteractionController() 6919 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 6920 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6921 spec); 6922 } else { 6923 // We cannot make the call and notify the caller so it does not wait. 6924 try { 6925 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6926 } catch (RemoteException re) { 6927 /* best effort - ignore */ 6928 } 6929 } 6930 } 6931 } 6932 6933 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6934 private int mChangeTypes = 0; 6935 6936 public View mSource; 6937 public long mLastEventTimeMillis; 6938 6939 @Override 6940 public void run() { 6941 // The accessibility may be turned off while we were waiting so check again. 6942 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6943 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6944 AccessibilityEvent event = AccessibilityEvent.obtain(); 6945 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6946 event.setContentChangeTypes(mChangeTypes); 6947 mSource.sendAccessibilityEventUnchecked(event); 6948 } else { 6949 mLastEventTimeMillis = 0; 6950 } 6951 // In any case reset to initial state. 6952 mSource.resetSubtreeAccessibilityStateChanged(); 6953 mSource = null; 6954 mChangeTypes = 0; 6955 } 6956 6957 public void runOrPost(View source, int changeType) { 6958 if (mSource != null) { 6959 // If there is no common predecessor, then mSource points to 6960 // a removed view, hence in this case always prefer the source. 6961 View predecessor = getCommonPredecessor(mSource, source); 6962 mSource = (predecessor != null) ? predecessor : source; 6963 mChangeTypes |= changeType; 6964 return; 6965 } 6966 mSource = source; 6967 mChangeTypes = changeType; 6968 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6969 final long minEventIntevalMillis = 6970 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6971 if (timeSinceLastMillis >= minEventIntevalMillis) { 6972 mSource.removeCallbacks(this); 6973 run(); 6974 } else { 6975 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6976 } 6977 } 6978 } 6979} 6980