ViewRootImpl.java revision d6bc96dbc71d2657815deb2cd44780da99ea3f1f
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 static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY; 20 21import android.Manifest; 22import android.animation.LayoutTransition; 23import android.app.ActivityManagerNative; 24import android.content.ClipDescription; 25import android.content.ComponentCallbacks; 26import android.content.Context; 27import android.content.pm.PackageManager; 28import android.content.res.CompatibilityInfo; 29import android.content.res.Configuration; 30import android.content.res.Resources; 31import android.graphics.Canvas; 32import android.graphics.Matrix; 33import android.graphics.PixelFormat; 34import android.graphics.Point; 35import android.graphics.PointF; 36import android.graphics.PorterDuff; 37import android.graphics.Rect; 38import android.graphics.Region; 39import android.graphics.drawable.Drawable; 40import android.hardware.display.DisplayManager; 41import android.hardware.display.DisplayManager.DisplayListener; 42import android.hardware.input.InputManager; 43import android.media.AudioManager; 44import android.os.Binder; 45import android.os.Build; 46import android.os.Bundle; 47import android.os.Debug; 48import android.os.Handler; 49import android.os.Looper; 50import android.os.Message; 51import android.os.ParcelFileDescriptor; 52import android.os.Process; 53import android.os.RemoteException; 54import android.os.SystemClock; 55import android.os.SystemProperties; 56import android.os.Trace; 57import android.util.AndroidRuntimeException; 58import android.util.DisplayMetrics; 59import android.util.Log; 60import android.util.Slog; 61import android.util.TimeUtils; 62import android.util.TypedValue; 63import android.view.Surface.OutOfResourcesException; 64import android.view.View.AttachInfo; 65import android.view.View.MeasureSpec; 66import android.view.accessibility.AccessibilityEvent; 67import android.view.accessibility.AccessibilityManager; 68import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 69import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 70import android.view.accessibility.AccessibilityNodeInfo; 71import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction; 72import android.view.accessibility.AccessibilityNodeProvider; 73import android.view.accessibility.IAccessibilityInteractionConnection; 74import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 75import android.view.animation.AccelerateDecelerateInterpolator; 76import android.view.animation.Interpolator; 77import android.view.inputmethod.InputConnection; 78import android.view.inputmethod.InputMethodManager; 79import android.widget.Scroller; 80 81import com.android.internal.R; 82import com.android.internal.os.SomeArgs; 83import com.android.internal.policy.PhoneFallbackEventHandler; 84import com.android.internal.view.BaseSurfaceHolder; 85import com.android.internal.view.RootViewSurfaceTaker; 86 87import java.io.FileDescriptor; 88import java.io.IOException; 89import java.io.OutputStream; 90import java.io.PrintWriter; 91import java.lang.ref.WeakReference; 92import java.util.ArrayList; 93import java.util.concurrent.CountDownLatch; 94import java.util.HashSet; 95 96/** 97 * The top of a view hierarchy, implementing the needed protocol between View 98 * and the WindowManager. This is for the most part an internal implementation 99 * detail of {@link WindowManagerGlobal}. 100 * 101 * {@hide} 102 */ 103@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 104public final class ViewRootImpl implements ViewParent, 105 View.AttachInfo.Callbacks, ThreadedRenderer.HardwareDrawCallbacks { 106 private static final String TAG = "ViewRootImpl"; 107 private static final boolean DBG = false; 108 private static final boolean LOCAL_LOGV = false; 109 /** @noinspection PointlessBooleanExpression*/ 110 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 111 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 112 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 113 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 114 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 115 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 116 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 117 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 118 private static final boolean DEBUG_FPS = false; 119 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 120 121 /** 122 * Set to false if we do not want to use the multi threaded renderer. Note that by disabling 123 * this, WindowCallbacks will not fire. 124 */ 125 private static final boolean USE_MT_RENDERER = true; 126 127 /** 128 * Set this system property to true to force the view hierarchy to render 129 * at 60 Hz. This can be used to measure the potential framerate. 130 */ 131 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 132 133 // properties used by emulator to determine display shape 134 public static final String PROPERTY_EMULATOR_WIN_OUTSET_BOTTOM_PX = 135 "ro.emu.win_outset_bottom_px"; 136 137 /** 138 * Maximum time we allow the user to roll the trackball enough to generate 139 * a key event, before resetting the counters. 140 */ 141 static final int MAX_TRACKBALL_DELAY = 250; 142 143 static final ThreadLocal<HandlerActionQueue> sRunQueues = new ThreadLocal<HandlerActionQueue>(); 144 145 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList(); 146 static boolean sFirstDrawComplete = false; 147 148 static final ArrayList<ComponentCallbacks> sConfigCallbacks = new ArrayList(); 149 150 final ArrayList<WindowCallbacks> mWindowCallbacks = new ArrayList(); 151 final Context mContext; 152 final IWindowSession mWindowSession; 153 final Display mDisplay; 154 final DisplayManager mDisplayManager; 155 final String mBasePackageName; 156 157 final int[] mTmpLocation = new int[2]; 158 159 final TypedValue mTmpValue = new TypedValue(); 160 161 final Thread mThread; 162 163 final WindowLeaked mLocation; 164 165 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 166 167 final W mWindow; 168 169 final int mTargetSdkVersion; 170 171 int mSeq; 172 173 View mView; 174 175 View mAccessibilityFocusedHost; 176 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 177 178 // The view which captures mouse input, or null when no one is capturing. 179 View mCapturingView; 180 181 int mViewVisibility; 182 boolean mAppVisible = true; 183 // For recents to freeform transition we need to keep drawing after the app receives information 184 // that it became invisible. This will ignore that information and depend on the decor view 185 // visibility to control drawing. The decor view visibility will get adjusted when the app get 186 // stopped and that's when the app will stop drawing further frames. 187 private boolean mForceDecorViewVisibility = false; 188 int mOrigWindowType = -1; 189 190 /** Whether the window had focus during the most recent traversal. */ 191 boolean mHadWindowFocus; 192 193 /** 194 * Whether the window lost focus during a previous traversal and has not 195 * yet gained it back. Used to determine whether a WINDOW_STATE_CHANGE 196 * accessibility events should be sent during traversal. 197 */ 198 boolean mLostWindowFocus; 199 200 // Set to true if the owner of this window is in the stopped state, 201 // so the window should no longer be active. 202 boolean mStopped = false; 203 204 // Set to true if the owner of this window is in ambient mode, 205 // which means it won't receive input events. 206 boolean mIsAmbientMode = false; 207 208 // Set to true to stop input during an Activity Transition. 209 boolean mPausedForTransition = false; 210 211 boolean mLastInCompatMode = false; 212 213 SurfaceHolder.Callback2 mSurfaceHolderCallback; 214 BaseSurfaceHolder mSurfaceHolder; 215 boolean mIsCreating; 216 boolean mDrawingAllowed; 217 218 final Region mTransparentRegion; 219 final Region mPreviousTransparentRegion; 220 221 int mWidth; 222 int mHeight; 223 Rect mDirty; 224 boolean mIsAnimating; 225 226 private boolean mDragResizing; 227 private int mCanvasOffsetX; 228 private int mCanvasOffsetY; 229 230 CompatibilityInfo.Translator mTranslator; 231 232 final View.AttachInfo mAttachInfo; 233 InputChannel mInputChannel; 234 InputQueue.Callback mInputQueueCallback; 235 InputQueue mInputQueue; 236 FallbackEventHandler mFallbackEventHandler; 237 Choreographer mChoreographer; 238 239 final Rect mTempRect; // used in the transaction to not thrash the heap. 240 final Rect mVisRect; // used to retrieve visible rect of focused view. 241 242 boolean mTraversalScheduled; 243 int mTraversalBarrier; 244 boolean mWillDrawSoon; 245 /** Set to true while in performTraversals for detecting when die(true) is called from internal 246 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 247 boolean mIsInTraversal; 248 boolean mApplyInsetsRequested; 249 boolean mLayoutRequested; 250 boolean mFirst; 251 boolean mReportNextDraw; 252 boolean mFullRedrawNeeded; 253 boolean mNewSurfaceNeeded; 254 boolean mHasHadWindowFocus; 255 boolean mLastWasImTarget; 256 CountDownLatch mWindowDrawCountDown; 257 258 boolean mIsDrawing; 259 int mLastSystemUiVisibility; 260 int mClientWindowLayoutFlags; 261 boolean mLastOverscanRequested; 262 263 // Pool of queued input events. 264 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 265 private QueuedInputEvent mQueuedInputEventPool; 266 private int mQueuedInputEventPoolSize; 267 268 /* Input event queue. 269 * Pending input events are input events waiting to be delivered to the input stages 270 * and handled by the application. 271 */ 272 QueuedInputEvent mPendingInputEventHead; 273 QueuedInputEvent mPendingInputEventTail; 274 int mPendingInputEventCount; 275 boolean mProcessInputEventsScheduled; 276 boolean mUnbufferedInputDispatch; 277 String mPendingInputEventQueueLengthCounterName = "pq"; 278 279 InputStage mFirstInputStage; 280 InputStage mFirstPostImeInputStage; 281 InputStage mSyntheticInputStage; 282 283 boolean mWindowAttributesChanged = false; 284 int mWindowAttributesChangesFlag = 0; 285 286 // These can be accessed by any thread, must be protected with a lock. 287 // Surface can never be reassigned or cleared (use Surface.clear()). 288 final Surface mSurface = new Surface(); 289 290 boolean mAdded; 291 boolean mAddedTouchMode; 292 293 final DisplayAdjustments mDisplayAdjustments; 294 295 // These are accessed by multiple threads. 296 final Rect mWinFrame; // frame given by window manager. 297 298 final Rect mPendingOverscanInsets = new Rect(); 299 final Rect mPendingVisibleInsets = new Rect(); 300 final Rect mPendingStableInsets = new Rect(); 301 final Rect mPendingContentInsets = new Rect(); 302 final Rect mPendingOutsets = new Rect(); 303 final Rect mPendingBackDropFrame = new Rect(); 304 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 305 = new ViewTreeObserver.InternalInsetsInfo(); 306 307 final Rect mDispatchContentInsets = new Rect(); 308 final Rect mDispatchStableInsets = new Rect(); 309 310 private WindowInsets mLastWindowInsets; 311 312 final Configuration mLastConfiguration = new Configuration(); 313 final Configuration mPendingConfiguration = new Configuration(); 314 315 boolean mScrollMayChange; 316 int mSoftInputMode; 317 WeakReference<View> mLastScrolledFocus; 318 int mScrollY; 319 int mCurScrollY; 320 Scroller mScroller; 321 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 322 private ArrayList<LayoutTransition> mPendingTransitions; 323 324 final ViewConfiguration mViewConfiguration; 325 326 /* Drag/drop */ 327 ClipDescription mDragDescription; 328 View mCurrentDragView; 329 volatile Object mLocalDragState; 330 final PointF mDragPoint = new PointF(); 331 final PointF mLastTouchPoint = new PointF(); 332 333 private boolean mProfileRendering; 334 private Choreographer.FrameCallback mRenderProfiler; 335 private boolean mRenderProfilingEnabled; 336 337 // Variables to track frames per second, enabled via DEBUG_FPS flag 338 private long mFpsStartTime = -1; 339 private long mFpsPrevTime = -1; 340 private int mFpsNumFrames; 341 342 private int mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 343 private PointerIcon mCustomPointerIcon = null; 344 345 /** 346 * see {@link #playSoundEffect(int)} 347 */ 348 AudioManager mAudioManager; 349 350 final AccessibilityManager mAccessibilityManager; 351 352 AccessibilityInteractionController mAccessibilityInteractionController; 353 354 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 355 HighContrastTextManager mHighContrastTextManager; 356 357 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 358 359 HashSet<View> mTempHashSet; 360 361 private final int mDensity; 362 private final int mNoncompatDensity; 363 364 private boolean mInLayout = false; 365 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 366 boolean mHandlingLayoutInLayoutRequest = false; 367 368 private int mViewLayoutDirectionInitial; 369 370 /** Set to true once doDie() has been called. */ 371 private boolean mRemoved; 372 373 /** 374 * Consistency verifier for debugging purposes. 375 */ 376 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 377 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 378 new InputEventConsistencyVerifier(this, 0) : null; 379 380 static final class SystemUiVisibilityInfo { 381 int seq; 382 int globalVisibility; 383 int localValue; 384 int localChanges; 385 } 386 387 private String mTag = TAG; 388 389 public ViewRootImpl(Context context, Display display) { 390 mContext = context; 391 mWindowSession = WindowManagerGlobal.getWindowSession(); 392 mDisplay = display; 393 mBasePackageName = context.getBasePackageName(); 394 395 mDisplayAdjustments = display.getDisplayAdjustments(); 396 397 mThread = Thread.currentThread(); 398 mLocation = new WindowLeaked(null); 399 mLocation.fillInStackTrace(); 400 mWidth = -1; 401 mHeight = -1; 402 mDirty = new Rect(); 403 mTempRect = new Rect(); 404 mVisRect = new Rect(); 405 mWinFrame = new Rect(); 406 mWindow = new W(this); 407 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 408 mViewVisibility = View.GONE; 409 mTransparentRegion = new Region(); 410 mPreviousTransparentRegion = new Region(); 411 mFirst = true; // true for the first time the view is added 412 mAdded = false; 413 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 414 mAccessibilityManager = AccessibilityManager.getInstance(context); 415 mAccessibilityInteractionConnectionManager = 416 new AccessibilityInteractionConnectionManager(); 417 mAccessibilityManager.addAccessibilityStateChangeListener( 418 mAccessibilityInteractionConnectionManager); 419 mHighContrastTextManager = new HighContrastTextManager(); 420 mAccessibilityManager.addHighTextContrastStateChangeListener( 421 mHighContrastTextManager); 422 mViewConfiguration = ViewConfiguration.get(context); 423 mDensity = context.getResources().getDisplayMetrics().densityDpi; 424 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 425 mFallbackEventHandler = new PhoneFallbackEventHandler(context); 426 mChoreographer = Choreographer.getInstance(); 427 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 428 loadSystemProperties(); 429 } 430 431 public static void addFirstDrawHandler(Runnable callback) { 432 synchronized (sFirstDrawHandlers) { 433 if (!sFirstDrawComplete) { 434 sFirstDrawHandlers.add(callback); 435 } 436 } 437 } 438 439 public static void addConfigCallback(ComponentCallbacks callback) { 440 synchronized (sConfigCallbacks) { 441 sConfigCallbacks.add(callback); 442 } 443 } 444 445 public void addWindowCallbacks(WindowCallbacks callback) { 446 if (USE_MT_RENDERER) { 447 synchronized (mWindowCallbacks) { 448 mWindowCallbacks.add(callback); 449 } 450 } 451 } 452 453 public void removeWindowCallbacks(WindowCallbacks callback) { 454 if (USE_MT_RENDERER) { 455 synchronized (mWindowCallbacks) { 456 mWindowCallbacks.remove(callback); 457 } 458 } 459 } 460 461 public void reportDrawFinish() { 462 if (mWindowDrawCountDown != null) { 463 mWindowDrawCountDown.countDown(); 464 } 465 } 466 467 // FIXME for perf testing only 468 private boolean mProfile = false; 469 470 /** 471 * Call this to profile the next traversal call. 472 * FIXME for perf testing only. Remove eventually 473 */ 474 public void profile() { 475 mProfile = true; 476 } 477 478 /** 479 * Indicates whether we are in touch mode. Calling this method triggers an IPC 480 * call and should be avoided whenever possible. 481 * 482 * @return True, if the device is in touch mode, false otherwise. 483 * 484 * @hide 485 */ 486 static boolean isInTouchMode() { 487 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 488 if (windowSession != null) { 489 try { 490 return windowSession.getInTouchMode(); 491 } catch (RemoteException e) { 492 } 493 } 494 return false; 495 } 496 497 /** 498 * We have one child 499 */ 500 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 501 synchronized (this) { 502 if (mView == null) { 503 mView = view; 504 505 mAttachInfo.mDisplayState = mDisplay.getState(); 506 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 507 508 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 509 mFallbackEventHandler.setView(view); 510 mWindowAttributes.copyFrom(attrs); 511 if (mWindowAttributes.packageName == null) { 512 mWindowAttributes.packageName = mBasePackageName; 513 } 514 attrs = mWindowAttributes; 515 setTag(); 516 // Keep track of the actual window flags supplied by the client. 517 mClientWindowLayoutFlags = attrs.flags; 518 519 setAccessibilityFocus(null, null); 520 521 if (view instanceof RootViewSurfaceTaker) { 522 mSurfaceHolderCallback = 523 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 524 if (mSurfaceHolderCallback != null) { 525 mSurfaceHolder = new TakenSurfaceHolder(); 526 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 527 } 528 } 529 530 // Compute surface insets required to draw at specified Z value. 531 // TODO: Use real shadow insets for a constant max Z. 532 if (!attrs.hasManualSurfaceInsets) { 533 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 534 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 535 } 536 537 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 538 mTranslator = compatibilityInfo.getTranslator(); 539 540 // If the application owns the surface, don't enable hardware acceleration 541 if (mSurfaceHolder == null) { 542 enableHardwareAcceleration(attrs); 543 } 544 545 boolean restore = false; 546 if (mTranslator != null) { 547 mSurface.setCompatibilityTranslator(mTranslator); 548 restore = true; 549 attrs.backup(); 550 mTranslator.translateWindowLayout(attrs); 551 } 552 if (DEBUG_LAYOUT) Log.d(mTag, "WindowLayout in setView:" + attrs); 553 554 if (!compatibilityInfo.supportsScreen()) { 555 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 556 mLastInCompatMode = true; 557 } 558 559 mSoftInputMode = attrs.softInputMode; 560 mWindowAttributesChanged = true; 561 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 562 mAttachInfo.mRootView = view; 563 mAttachInfo.mScalingRequired = mTranslator != null; 564 mAttachInfo.mApplicationScale = 565 mTranslator == null ? 1.0f : mTranslator.applicationScale; 566 if (panelParentView != null) { 567 mAttachInfo.mPanelParentWindowToken 568 = panelParentView.getApplicationWindowToken(); 569 } 570 mAdded = true; 571 int res; /* = WindowManagerImpl.ADD_OKAY; */ 572 573 // Schedule the first layout -before- adding to the window 574 // manager, to make sure we do the relayout before receiving 575 // any other events from the system. 576 requestLayout(); 577 if ((mWindowAttributes.inputFeatures 578 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 579 mInputChannel = new InputChannel(); 580 } 581 mForceDecorViewVisibility = (mWindowAttributes.privateFlags 582 & PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY) != 0; 583 try { 584 mOrigWindowType = mWindowAttributes.type; 585 mAttachInfo.mRecomputeGlobalAttributes = true; 586 collectViewAttributes(); 587 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 588 getHostVisibility(), mDisplay.getDisplayId(), 589 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, 590 mAttachInfo.mOutsets, mInputChannel); 591 } catch (RemoteException e) { 592 mAdded = false; 593 mView = null; 594 mAttachInfo.mRootView = null; 595 mInputChannel = null; 596 mFallbackEventHandler.setView(null); 597 unscheduleTraversals(); 598 setAccessibilityFocus(null, null); 599 throw new RuntimeException("Adding window failed", e); 600 } finally { 601 if (restore) { 602 attrs.restore(); 603 } 604 } 605 606 if (mTranslator != null) { 607 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 608 } 609 mPendingOverscanInsets.set(0, 0, 0, 0); 610 mPendingContentInsets.set(mAttachInfo.mContentInsets); 611 mPendingStableInsets.set(mAttachInfo.mStableInsets); 612 mPendingVisibleInsets.set(0, 0, 0, 0); 613 if (DEBUG_LAYOUT) Log.v(mTag, "Added window " + mWindow); 614 if (res < WindowManagerGlobal.ADD_OKAY) { 615 mAttachInfo.mRootView = null; 616 mAdded = false; 617 mFallbackEventHandler.setView(null); 618 unscheduleTraversals(); 619 setAccessibilityFocus(null, null); 620 switch (res) { 621 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 622 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 623 throw new WindowManager.BadTokenException( 624 "Unable to add window -- token " + attrs.token 625 + " is not valid; is your activity running?"); 626 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 627 throw new WindowManager.BadTokenException( 628 "Unable to add window -- token " + attrs.token 629 + " is not for an application"); 630 case WindowManagerGlobal.ADD_APP_EXITING: 631 throw new WindowManager.BadTokenException( 632 "Unable to add window -- app for token " + attrs.token 633 + " is exiting"); 634 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 635 throw new WindowManager.BadTokenException( 636 "Unable to add window -- window " + mWindow 637 + " has already been added"); 638 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 639 // Silently ignore -- we would have just removed it 640 // right away, anyway. 641 return; 642 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 643 throw new WindowManager.BadTokenException("Unable to add window " 644 + mWindow + " -- another window of type " 645 + mWindowAttributes.type + " already exists"); 646 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 647 throw new WindowManager.BadTokenException("Unable to add window " 648 + mWindow + " -- permission denied for window type " 649 + mWindowAttributes.type); 650 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 651 throw new WindowManager.InvalidDisplayException("Unable to add window " 652 + mWindow + " -- the specified display can not be found"); 653 case WindowManagerGlobal.ADD_INVALID_TYPE: 654 throw new WindowManager.InvalidDisplayException("Unable to add window " 655 + mWindow + " -- the specified window type " 656 + mWindowAttributes.type + " is not valid"); 657 } 658 throw new RuntimeException( 659 "Unable to add window -- unknown error code " + res); 660 } 661 662 if (view instanceof RootViewSurfaceTaker) { 663 mInputQueueCallback = 664 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 665 } 666 if (mInputChannel != null) { 667 if (mInputQueueCallback != null) { 668 mInputQueue = new InputQueue(); 669 mInputQueueCallback.onInputQueueCreated(mInputQueue); 670 } 671 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 672 Looper.myLooper()); 673 } 674 675 view.assignParent(this); 676 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 677 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 678 679 if (mAccessibilityManager.isEnabled()) { 680 mAccessibilityInteractionConnectionManager.ensureConnection(); 681 } 682 683 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 684 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 685 } 686 687 // Set up the input pipeline. 688 CharSequence counterSuffix = attrs.getTitle(); 689 mSyntheticInputStage = new SyntheticInputStage(); 690 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 691 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 692 "aq:native-post-ime:" + counterSuffix); 693 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 694 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 695 "aq:ime:" + counterSuffix); 696 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 697 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 698 "aq:native-pre-ime:" + counterSuffix); 699 700 mFirstInputStage = nativePreImeStage; 701 mFirstPostImeInputStage = earlyPostImeStage; 702 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 703 } 704 } 705 } 706 707 private void setTag() { 708 final String[] split = mWindowAttributes.getTitle().toString().split("\\."); 709 if (split.length > 0) { 710 mTag = TAG + "[" + split[split.length - 1] + "]"; 711 } 712 } 713 714 /** Whether the window is in local focus mode or not */ 715 private boolean isInLocalFocusMode() { 716 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 717 } 718 719 public int getWindowFlags() { 720 return mWindowAttributes.flags; 721 } 722 723 public int getDisplayId() { 724 return mDisplay.getDisplayId(); 725 } 726 727 public CharSequence getTitle() { 728 return mWindowAttributes.getTitle(); 729 } 730 731 void destroyHardwareResources() { 732 if (mAttachInfo.mHardwareRenderer != null) { 733 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 734 mAttachInfo.mHardwareRenderer.destroy(); 735 } 736 } 737 738 public void detachFunctor(long functor) { 739 if (mAttachInfo.mHardwareRenderer != null) { 740 // Fence so that any pending invokeFunctor() messages will be processed 741 // before we return from detachFunctor. 742 mAttachInfo.mHardwareRenderer.stopDrawing(); 743 } 744 } 745 746 /** 747 * Schedules the functor for execution in either kModeProcess or 748 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 749 * 750 * @param functor The native functor to invoke 751 * @param waitForCompletion If true, this will not return until the functor 752 * has invoked. If false, the functor may be invoked 753 * asynchronously. 754 */ 755 public void invokeFunctor(long functor, boolean waitForCompletion) { 756 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 757 } 758 759 public void registerAnimatingRenderNode(RenderNode animator) { 760 if (mAttachInfo.mHardwareRenderer != null) { 761 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 762 } else { 763 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 764 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 765 } 766 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 767 } 768 } 769 770 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 771 mAttachInfo.mHardwareAccelerated = false; 772 mAttachInfo.mHardwareAccelerationRequested = false; 773 774 // Don't enable hardware acceleration when the application is in compatibility mode 775 if (mTranslator != null) return; 776 777 // Try to enable hardware acceleration if requested 778 final boolean hardwareAccelerated = 779 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 780 781 if (hardwareAccelerated) { 782 if (!ThreadedRenderer.isAvailable()) { 783 return; 784 } 785 786 // Persistent processes (including the system) should not do 787 // accelerated rendering on low-end devices. In that case, 788 // sRendererDisabled will be set. In addition, the system process 789 // itself should never do accelerated rendering. In that case, both 790 // sRendererDisabled and sSystemRendererDisabled are set. When 791 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 792 // can be used by code on the system process to escape that and enable 793 // HW accelerated drawing. (This is basically for the lock screen.) 794 795 final boolean fakeHwAccelerated = (attrs.privateFlags & 796 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 797 final boolean forceHwAccelerated = (attrs.privateFlags & 798 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 799 800 if (fakeHwAccelerated) { 801 // This is exclusively for the preview windows the window manager 802 // shows for launching applications, so they will look more like 803 // the app being launched. 804 mAttachInfo.mHardwareAccelerationRequested = true; 805 } else if (!ThreadedRenderer.sRendererDisabled 806 || (ThreadedRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 807 if (mAttachInfo.mHardwareRenderer != null) { 808 mAttachInfo.mHardwareRenderer.destroy(); 809 } 810 811 final Rect insets = attrs.surfaceInsets; 812 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 813 || insets.top != 0 || insets.bottom != 0; 814 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 815 mAttachInfo.mHardwareRenderer = ThreadedRenderer.create(mContext, translucent); 816 if (mAttachInfo.mHardwareRenderer != null) { 817 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 818 mAttachInfo.mHardwareAccelerated = 819 mAttachInfo.mHardwareAccelerationRequested = true; 820 } 821 } 822 } 823 } 824 825 public View getView() { 826 return mView; 827 } 828 829 final WindowLeaked getLocation() { 830 return mLocation; 831 } 832 833 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 834 synchronized (this) { 835 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 836 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 837 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 838 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 839 final int oldSoftInputMode = mWindowAttributes.softInputMode; 840 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 841 842 // Keep track of the actual window flags supplied by the client. 843 mClientWindowLayoutFlags = attrs.flags; 844 845 // Preserve compatible window flag if exists. 846 final int compatibleWindowFlag = mWindowAttributes.privateFlags 847 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 848 849 // Transfer over system UI visibility values as they carry current state. 850 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 851 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 852 853 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 854 if ((mWindowAttributesChangesFlag 855 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 856 // Recompute system ui visibility. 857 mAttachInfo.mRecomputeGlobalAttributes = true; 858 } 859 if (mWindowAttributes.packageName == null) { 860 mWindowAttributes.packageName = mBasePackageName; 861 } 862 mWindowAttributes.privateFlags |= compatibleWindowFlag; 863 864 // Restore old surface insets. 865 mWindowAttributes.surfaceInsets.set( 866 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 867 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 868 869 applyKeepScreenOnFlag(mWindowAttributes); 870 871 if (newView) { 872 mSoftInputMode = attrs.softInputMode; 873 requestLayout(); 874 } 875 876 // Don't lose the mode we last auto-computed. 877 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 878 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 879 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 880 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 881 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 882 } 883 884 mWindowAttributesChanged = true; 885 scheduleTraversals(); 886 } 887 } 888 889 void handleAppVisibility(boolean visible) { 890 if (mAppVisible != visible) { 891 mAppVisible = visible; 892 scheduleTraversals(); 893 if (!mAppVisible) { 894 WindowManagerGlobal.trimForeground(); 895 } 896 } 897 } 898 899 void handleGetNewSurface() { 900 mNewSurfaceNeeded = true; 901 mFullRedrawNeeded = true; 902 scheduleTraversals(); 903 } 904 905 private final DisplayListener mDisplayListener = new DisplayListener() { 906 @Override 907 public void onDisplayChanged(int displayId) { 908 if (mView != null && mDisplay.getDisplayId() == displayId) { 909 final int oldDisplayState = mAttachInfo.mDisplayState; 910 final int newDisplayState = mDisplay.getState(); 911 if (oldDisplayState != newDisplayState) { 912 mAttachInfo.mDisplayState = newDisplayState; 913 pokeDrawLockIfNeeded(); 914 if (oldDisplayState != Display.STATE_UNKNOWN) { 915 final int oldScreenState = toViewScreenState(oldDisplayState); 916 final int newScreenState = toViewScreenState(newDisplayState); 917 if (oldScreenState != newScreenState) { 918 mView.dispatchScreenStateChanged(newScreenState); 919 } 920 if (oldDisplayState == Display.STATE_OFF) { 921 // Draw was suppressed so we need to for it to happen here. 922 mFullRedrawNeeded = true; 923 scheduleTraversals(); 924 } 925 } 926 } 927 } 928 } 929 930 @Override 931 public void onDisplayRemoved(int displayId) { 932 } 933 934 @Override 935 public void onDisplayAdded(int displayId) { 936 } 937 938 private int toViewScreenState(int displayState) { 939 return displayState == Display.STATE_OFF ? 940 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 941 } 942 }; 943 944 void pokeDrawLockIfNeeded() { 945 final int displayState = mAttachInfo.mDisplayState; 946 if (mView != null && mAdded && mTraversalScheduled 947 && (displayState == Display.STATE_DOZE 948 || displayState == Display.STATE_DOZE_SUSPEND)) { 949 try { 950 mWindowSession.pokeDrawLock(mWindow); 951 } catch (RemoteException ex) { 952 // System server died, oh well. 953 } 954 } 955 } 956 957 @Override 958 public void requestFitSystemWindows() { 959 checkThread(); 960 mApplyInsetsRequested = true; 961 scheduleTraversals(); 962 } 963 964 @Override 965 public void requestLayout() { 966 if (!mHandlingLayoutInLayoutRequest) { 967 checkThread(); 968 mLayoutRequested = true; 969 scheduleTraversals(); 970 } 971 } 972 973 @Override 974 public boolean isLayoutRequested() { 975 return mLayoutRequested; 976 } 977 978 void invalidate() { 979 mDirty.set(0, 0, mWidth, mHeight); 980 if (!mWillDrawSoon) { 981 scheduleTraversals(); 982 } 983 } 984 985 void invalidateWorld(View view) { 986 view.invalidate(); 987 if (view instanceof ViewGroup) { 988 ViewGroup parent = (ViewGroup) view; 989 for (int i = 0; i < parent.getChildCount(); i++) { 990 invalidateWorld(parent.getChildAt(i)); 991 } 992 } 993 } 994 995 @Override 996 public void invalidateChild(View child, Rect dirty) { 997 invalidateChildInParent(null, dirty); 998 } 999 1000 @Override 1001 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 1002 checkThread(); 1003 if (DEBUG_DRAW) Log.v(mTag, "Invalidate child: " + dirty); 1004 1005 if (dirty == null) { 1006 invalidate(); 1007 return null; 1008 } else if (dirty.isEmpty() && !mIsAnimating) { 1009 return null; 1010 } 1011 1012 if (mCurScrollY != 0 || mTranslator != null) { 1013 mTempRect.set(dirty); 1014 dirty = mTempRect; 1015 if (mCurScrollY != 0) { 1016 dirty.offset(0, -mCurScrollY); 1017 } 1018 if (mTranslator != null) { 1019 mTranslator.translateRectInAppWindowToScreen(dirty); 1020 } 1021 if (mAttachInfo.mScalingRequired) { 1022 dirty.inset(-1, -1); 1023 } 1024 } 1025 1026 invalidateRectOnScreen(dirty); 1027 1028 return null; 1029 } 1030 1031 private void invalidateRectOnScreen(Rect dirty) { 1032 final Rect localDirty = mDirty; 1033 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 1034 mAttachInfo.mSetIgnoreDirtyState = true; 1035 mAttachInfo.mIgnoreDirtyState = true; 1036 } 1037 1038 // Add the new dirty rect to the current one 1039 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 1040 // Intersect with the bounds of the window to skip 1041 // updates that lie outside of the visible region 1042 final float appScale = mAttachInfo.mApplicationScale; 1043 final boolean intersected = localDirty.intersect(0, 0, 1044 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 1045 if (!intersected) { 1046 localDirty.setEmpty(); 1047 } 1048 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 1049 scheduleTraversals(); 1050 } 1051 } 1052 1053 public void setIsAmbientMode(boolean ambient) { 1054 mIsAmbientMode = ambient; 1055 } 1056 1057 void setWindowStopped(boolean stopped) { 1058 if (mStopped != stopped) { 1059 mStopped = stopped; 1060 if (!mStopped) { 1061 scheduleTraversals(); 1062 } 1063 } 1064 } 1065 1066 /** 1067 * Block the input events during an Activity Transition. The KEYCODE_BACK event is allowed 1068 * through to allow quick reversal of the Activity Transition. 1069 * 1070 * @param paused true to pause, false to resume. 1071 */ 1072 public void setPausedForTransition(boolean paused) { 1073 mPausedForTransition = paused; 1074 } 1075 1076 @Override 1077 public ViewParent getParent() { 1078 return null; 1079 } 1080 1081 @Override 1082 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 1083 if (child != mView) { 1084 throw new RuntimeException("child is not mine, honest!"); 1085 } 1086 // Note: don't apply scroll offset, because we want to know its 1087 // visibility in the virtual canvas being given to the view hierarchy. 1088 return r.intersect(0, 0, mWidth, mHeight); 1089 } 1090 1091 @Override 1092 public void bringChildToFront(View child) { 1093 } 1094 1095 int getHostVisibility() { 1096 return (mAppVisible || mForceDecorViewVisibility) ? mView.getVisibility() : View.GONE; 1097 } 1098 1099 /** 1100 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1101 * This list will be cleared after the transitions on the list are start()'ed. These 1102 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1103 * happens during the layout phase of traversal, which we want to complete before any of the 1104 * animations are started (because those animations may side-effect properties that layout 1105 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1106 * to the list and it is started just prior to starting the drawing phase of traversal. 1107 * 1108 * @param transition The LayoutTransition to be started on the next traversal. 1109 * 1110 * @hide 1111 */ 1112 public void requestTransitionStart(LayoutTransition transition) { 1113 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1114 if (mPendingTransitions == null) { 1115 mPendingTransitions = new ArrayList<LayoutTransition>(); 1116 } 1117 mPendingTransitions.add(transition); 1118 } 1119 } 1120 1121 /** 1122 * Notifies the HardwareRenderer that a new frame will be coming soon. 1123 * Currently only {@link ThreadedRenderer} cares about this, and uses 1124 * this knowledge to adjust the scheduling of off-thread animations 1125 */ 1126 void notifyRendererOfFramePending() { 1127 if (mAttachInfo.mHardwareRenderer != null) { 1128 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1129 } 1130 } 1131 1132 void scheduleTraversals() { 1133 if (!mTraversalScheduled) { 1134 mTraversalScheduled = true; 1135 mTraversalBarrier = mHandler.getLooper().getQueue().postSyncBarrier(); 1136 mChoreographer.postCallback( 1137 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1138 if (!mUnbufferedInputDispatch) { 1139 scheduleConsumeBatchedInput(); 1140 } 1141 notifyRendererOfFramePending(); 1142 pokeDrawLockIfNeeded(); 1143 } 1144 } 1145 1146 void unscheduleTraversals() { 1147 if (mTraversalScheduled) { 1148 mTraversalScheduled = false; 1149 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1150 mChoreographer.removeCallbacks( 1151 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1152 } 1153 } 1154 1155 void doTraversal() { 1156 if (mTraversalScheduled) { 1157 mTraversalScheduled = false; 1158 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1159 1160 if (mProfile) { 1161 Debug.startMethodTracing("ViewAncestor"); 1162 } 1163 1164 performTraversals(); 1165 1166 if (mProfile) { 1167 Debug.stopMethodTracing(); 1168 mProfile = false; 1169 } 1170 } 1171 } 1172 1173 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1174 // Update window's global keep screen on flag: if a view has requested 1175 // that the screen be kept on, then it is always set; otherwise, it is 1176 // set to whatever the client last requested for the global state. 1177 if (mAttachInfo.mKeepScreenOn) { 1178 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1179 } else { 1180 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1181 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1182 } 1183 } 1184 1185 private boolean collectViewAttributes() { 1186 if (mAttachInfo.mRecomputeGlobalAttributes) { 1187 //Log.i(mTag, "Computing view hierarchy attributes!"); 1188 mAttachInfo.mRecomputeGlobalAttributes = false; 1189 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1190 mAttachInfo.mKeepScreenOn = false; 1191 mAttachInfo.mSystemUiVisibility = 0; 1192 mAttachInfo.mHasSystemUiListeners = false; 1193 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1194 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1195 WindowManager.LayoutParams params = mWindowAttributes; 1196 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1197 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1198 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1199 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1200 applyKeepScreenOnFlag(params); 1201 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1202 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1203 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1204 return true; 1205 } 1206 } 1207 return false; 1208 } 1209 1210 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1211 int vis = 0; 1212 // Translucent decor window flags imply stable system ui visibility. 1213 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1214 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1215 } 1216 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1217 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1218 } 1219 return vis; 1220 } 1221 1222 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1223 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1224 int childWidthMeasureSpec; 1225 int childHeightMeasureSpec; 1226 boolean windowSizeMayChange = false; 1227 1228 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(mTag, 1229 "Measuring " + host + " in display " + desiredWindowWidth 1230 + "x" + desiredWindowHeight + "..."); 1231 1232 boolean goodMeasure = false; 1233 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1234 // On large screens, we don't want to allow dialogs to just 1235 // stretch to fill the entire width of the screen to display 1236 // one line of text. First try doing the layout at a smaller 1237 // size to see if it will fit. 1238 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1239 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1240 int baseSize = 0; 1241 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1242 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1243 } 1244 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": baseSize=" + baseSize); 1245 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1246 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1247 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1248 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1249 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1250 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1251 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1252 goodMeasure = true; 1253 } else { 1254 // Didn't fit in that size... try expanding a bit. 1255 baseSize = (baseSize+desiredWindowWidth)/2; 1256 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": next baseSize=" 1257 + baseSize); 1258 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1259 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1260 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1261 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1262 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1263 if (DEBUG_DIALOG) Log.v(mTag, "Good!"); 1264 goodMeasure = true; 1265 } 1266 } 1267 } 1268 } 1269 1270 if (!goodMeasure) { 1271 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1272 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1273 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1274 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1275 windowSizeMayChange = true; 1276 } 1277 } 1278 1279 if (DBG) { 1280 System.out.println("======================================"); 1281 System.out.println("performTraversals -- after measure"); 1282 host.debug(); 1283 } 1284 1285 return windowSizeMayChange; 1286 } 1287 1288 /** 1289 * Modifies the input matrix such that it maps view-local coordinates to 1290 * on-screen coordinates. 1291 * 1292 * @param m input matrix to modify 1293 */ 1294 void transformMatrixToGlobal(Matrix m) { 1295 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1296 } 1297 1298 /** 1299 * Modifies the input matrix such that it maps on-screen coordinates to 1300 * view-local coordinates. 1301 * 1302 * @param m input matrix to modify 1303 */ 1304 void transformMatrixToLocal(Matrix m) { 1305 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1306 } 1307 1308 /* package */ WindowInsets getWindowInsets(boolean forceConstruct) { 1309 if (mLastWindowInsets == null || forceConstruct) { 1310 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1311 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1312 Rect contentInsets = mDispatchContentInsets; 1313 Rect stableInsets = mDispatchStableInsets; 1314 // For dispatch we preserve old logic, but for direct requests from Views we allow to 1315 // immediately use pending insets. 1316 if (!forceConstruct 1317 && (!mPendingContentInsets.equals(contentInsets) || 1318 !mPendingStableInsets.equals(stableInsets))) { 1319 contentInsets = mPendingContentInsets; 1320 stableInsets = mPendingStableInsets; 1321 } 1322 Rect outsets = mAttachInfo.mOutsets; 1323 if (outsets.left > 0 || outsets.top > 0 || outsets.right > 0 || outsets.bottom > 0) { 1324 contentInsets = new Rect(contentInsets.left + outsets.left, 1325 contentInsets.top + outsets.top, contentInsets.right + outsets.right, 1326 contentInsets.bottom + outsets.bottom); 1327 } 1328 mLastWindowInsets = new WindowInsets(contentInsets, 1329 null /* windowDecorInsets */, stableInsets, 1330 mContext.getResources().getConfiguration().isScreenRound()); 1331 } 1332 return mLastWindowInsets; 1333 } 1334 1335 void dispatchApplyInsets(View host) { 1336 host.dispatchApplyWindowInsets(getWindowInsets(true /* forceConstruct */)); 1337 } 1338 1339 private void performTraversals() { 1340 // cache mView since it is used so much below... 1341 final View host = mView; 1342 1343 if (DBG) { 1344 System.out.println("======================================"); 1345 System.out.println("performTraversals"); 1346 host.debug(); 1347 } 1348 1349 if (host == null || !mAdded) 1350 return; 1351 1352 mIsInTraversal = true; 1353 mWillDrawSoon = true; 1354 boolean windowSizeMayChange = false; 1355 boolean newSurface = false; 1356 boolean surfaceChanged = false; 1357 WindowManager.LayoutParams lp = mWindowAttributes; 1358 1359 int desiredWindowWidth; 1360 int desiredWindowHeight; 1361 1362 final int viewVisibility = getHostVisibility(); 1363 final boolean viewVisibilityChanged = !mFirst 1364 && (mViewVisibility != viewVisibility || mNewSurfaceNeeded); 1365 1366 WindowManager.LayoutParams params = null; 1367 if (mWindowAttributesChanged) { 1368 mWindowAttributesChanged = false; 1369 surfaceChanged = true; 1370 params = lp; 1371 } 1372 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1373 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1374 params = lp; 1375 mFullRedrawNeeded = true; 1376 mLayoutRequested = true; 1377 if (mLastInCompatMode) { 1378 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1379 mLastInCompatMode = false; 1380 } else { 1381 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1382 mLastInCompatMode = true; 1383 } 1384 } 1385 1386 mWindowAttributesChangesFlag = 0; 1387 1388 Rect frame = mWinFrame; 1389 if (mFirst) { 1390 mFullRedrawNeeded = true; 1391 mLayoutRequested = true; 1392 1393 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1394 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1395 // NOTE -- system code, won't try to do compat mode. 1396 Point size = new Point(); 1397 mDisplay.getRealSize(size); 1398 desiredWindowWidth = size.x; 1399 desiredWindowHeight = size.y; 1400 } else { 1401 DisplayMetrics packageMetrics = 1402 mView.getContext().getResources().getDisplayMetrics(); 1403 desiredWindowWidth = packageMetrics.widthPixels; 1404 desiredWindowHeight = packageMetrics.heightPixels; 1405 } 1406 1407 // We used to use the following condition to choose 32 bits drawing caches: 1408 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1409 // However, windows are now always 32 bits by default, so choose 32 bits 1410 mAttachInfo.mUse32BitDrawingCache = true; 1411 mAttachInfo.mHasWindowFocus = false; 1412 mAttachInfo.mWindowVisibility = viewVisibility; 1413 mAttachInfo.mRecomputeGlobalAttributes = false; 1414 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1415 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1416 // Set the layout direction if it has not been set before (inherit is the default) 1417 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1418 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1419 } 1420 host.dispatchAttachedToWindow(mAttachInfo, 0); 1421 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1422 dispatchApplyInsets(host); 1423 //Log.i(mTag, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1424 1425 } else { 1426 desiredWindowWidth = frame.width(); 1427 desiredWindowHeight = frame.height(); 1428 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1429 if (DEBUG_ORIENTATION) Log.v(mTag, "View " + host + " resized to: " + frame); 1430 mFullRedrawNeeded = true; 1431 mLayoutRequested = true; 1432 windowSizeMayChange = true; 1433 } 1434 } 1435 1436 if (viewVisibilityChanged) { 1437 mAttachInfo.mWindowVisibility = viewVisibility; 1438 host.dispatchWindowVisibilityChanged(viewVisibility); 1439 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1440 endDragResizing(); 1441 destroyHardwareResources(); 1442 } 1443 if (viewVisibility == View.GONE) { 1444 // After making a window gone, we will count it as being 1445 // shown for the first time the next time it gets focus. 1446 mHasHadWindowFocus = false; 1447 } 1448 } 1449 1450 // Non-visible windows can't hold accessibility focus. 1451 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1452 host.clearAccessibilityFocus(); 1453 } 1454 1455 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1456 getRunQueue().executeActions(mAttachInfo.mHandler); 1457 1458 boolean insetsChanged = false; 1459 1460 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1461 if (layoutRequested) { 1462 1463 final Resources res = mView.getContext().getResources(); 1464 1465 if (mFirst) { 1466 // make sure touch mode code executes by setting cached value 1467 // to opposite of the added touch mode. 1468 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1469 ensureTouchModeLocally(mAddedTouchMode); 1470 } else { 1471 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1472 insetsChanged = true; 1473 } 1474 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1475 insetsChanged = true; 1476 } 1477 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1478 insetsChanged = true; 1479 } 1480 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1481 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1482 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1483 + mAttachInfo.mVisibleInsets); 1484 } 1485 if (!mPendingOutsets.equals(mAttachInfo.mOutsets)) { 1486 insetsChanged = true; 1487 } 1488 if ((lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1489 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) 1490 && (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1491 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD 1492 || lp.type == WindowManager.LayoutParams.TYPE_VOLUME_OVERLAY)) { 1493 windowSizeMayChange = true; 1494 // NOTE -- system code, won't try to do compat mode. 1495 Point size = new Point(); 1496 mDisplay.getRealSize(size); 1497 desiredWindowWidth = size.x; 1498 desiredWindowHeight = size.y; 1499 } 1500 } 1501 1502 // Ask host how big it wants to be 1503 windowSizeMayChange |= measureHierarchy(host, lp, res, 1504 desiredWindowWidth, desiredWindowHeight); 1505 } 1506 1507 if (collectViewAttributes()) { 1508 params = lp; 1509 } 1510 if (mAttachInfo.mForceReportNewAttributes) { 1511 mAttachInfo.mForceReportNewAttributes = false; 1512 params = lp; 1513 } 1514 1515 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1516 mAttachInfo.mViewVisibilityChanged = false; 1517 int resizeMode = mSoftInputMode & 1518 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1519 // If we are in auto resize mode, then we need to determine 1520 // what mode to use now. 1521 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1522 final int N = mAttachInfo.mScrollContainers.size(); 1523 for (int i=0; i<N; i++) { 1524 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1525 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1526 } 1527 } 1528 if (resizeMode == 0) { 1529 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1530 } 1531 if ((lp.softInputMode & 1532 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1533 lp.softInputMode = (lp.softInputMode & 1534 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1535 resizeMode; 1536 params = lp; 1537 } 1538 } 1539 } 1540 1541 if (params != null) { 1542 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1543 if (!PixelFormat.formatHasAlpha(params.format)) { 1544 params.format = PixelFormat.TRANSLUCENT; 1545 } 1546 } 1547 mAttachInfo.mOverscanRequested = (params.flags 1548 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1549 } 1550 1551 if (mApplyInsetsRequested) { 1552 mApplyInsetsRequested = false; 1553 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1554 dispatchApplyInsets(host); 1555 if (mLayoutRequested) { 1556 // Short-circuit catching a new layout request here, so 1557 // we don't need to go through two layout passes when things 1558 // change due to fitting system windows, which can happen a lot. 1559 windowSizeMayChange |= measureHierarchy(host, lp, 1560 mView.getContext().getResources(), 1561 desiredWindowWidth, desiredWindowHeight); 1562 } 1563 } 1564 1565 if (layoutRequested) { 1566 // Clear this now, so that if anything requests a layout in the 1567 // rest of this function we will catch it and re-run a full 1568 // layout pass. 1569 mLayoutRequested = false; 1570 } 1571 1572 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1573 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1574 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1575 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1576 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1577 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1578 windowShouldResize |= mDragResizing; 1579 1580 // If the backdrop frame doesn't equal to a frame, we are starting a resize operation, so 1581 // force it to be resized. 1582 windowShouldResize |= !mPendingBackDropFrame.equals(mWinFrame); 1583 1584 // Determine whether to compute insets. 1585 // If there are no inset listeners remaining then we may still need to compute 1586 // insets in case the old insets were non-empty and must be reset. 1587 final boolean computesInternalInsets = 1588 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1589 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1590 1591 boolean insetsPending = false; 1592 int relayoutResult = 0; 1593 1594 final boolean isViewVisible = viewVisibility == View.VISIBLE; 1595 if (mFirst || windowShouldResize || insetsChanged || 1596 viewVisibilityChanged || params != null) { 1597 1598 if (isViewVisible) { 1599 // If this window is giving internal insets to the window 1600 // manager, and it is being added or changing its visibility, 1601 // then we want to first give the window manager "fake" 1602 // insets to cause it to effectively ignore the content of 1603 // the window during layout. This avoids it briefly causing 1604 // other windows to resize/move based on the raw frame of the 1605 // window, waiting until we can finish laying out this window 1606 // and get back to the window manager with the ultimately 1607 // computed insets. 1608 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1609 } 1610 1611 if (mSurfaceHolder != null) { 1612 mSurfaceHolder.mSurfaceLock.lock(); 1613 mDrawingAllowed = true; 1614 } 1615 1616 boolean hwInitialized = false; 1617 boolean contentInsetsChanged = false; 1618 boolean hadSurface = mSurface.isValid(); 1619 1620 try { 1621 if (DEBUG_LAYOUT) { 1622 Log.i(mTag, "host=w:" + host.getMeasuredWidth() + ", h:" + 1623 host.getMeasuredHeight() + ", params=" + params); 1624 } 1625 1626 if (mAttachInfo.mHardwareRenderer != null) { 1627 // relayoutWindow may decide to destroy mSurface. As that decision 1628 // happens in WindowManager service, we need to be defensive here 1629 // and stop using the surface in case it gets destroyed. 1630 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1631 // Animations were running so we need to push a frame 1632 // to resume them 1633 mDirty.set(0, 0, mWidth, mHeight); 1634 } 1635 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1636 } 1637 final int surfaceGenerationId = mSurface.getGenerationId(); 1638 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1639 1640 if (DEBUG_LAYOUT) Log.v(mTag, "relayout: frame=" + frame.toShortString() 1641 + " overscan=" + mPendingOverscanInsets.toShortString() 1642 + " content=" + mPendingContentInsets.toShortString() 1643 + " visible=" + mPendingVisibleInsets.toShortString() 1644 + " visible=" + mPendingStableInsets.toShortString() 1645 + " outsets=" + mPendingOutsets.toShortString() 1646 + " surface=" + mSurface); 1647 1648 if (mPendingConfiguration.seq != 0) { 1649 if (DEBUG_CONFIGURATION) Log.v(mTag, "Visible with new config: " 1650 + mPendingConfiguration); 1651 updateConfiguration(new Configuration(mPendingConfiguration), !mFirst); 1652 mPendingConfiguration.seq = 0; 1653 } 1654 1655 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1656 mAttachInfo.mOverscanInsets); 1657 contentInsetsChanged = !mPendingContentInsets.equals( 1658 mAttachInfo.mContentInsets); 1659 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1660 mAttachInfo.mVisibleInsets); 1661 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1662 mAttachInfo.mStableInsets); 1663 final boolean outsetsChanged = !mPendingOutsets.equals(mAttachInfo.mOutsets); 1664 final boolean surfaceSizeChanged = (relayoutResult 1665 & WindowManagerGlobal.RELAYOUT_RES_SURFACE_RESIZED) != 0; 1666 if (contentInsetsChanged) { 1667 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1668 if (DEBUG_LAYOUT) Log.v(mTag, "Content insets changing to: " 1669 + mAttachInfo.mContentInsets); 1670 } 1671 if (overscanInsetsChanged) { 1672 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1673 if (DEBUG_LAYOUT) Log.v(mTag, "Overscan insets changing to: " 1674 + mAttachInfo.mOverscanInsets); 1675 // Need to relayout with content insets. 1676 contentInsetsChanged = true; 1677 } 1678 if (stableInsetsChanged) { 1679 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1680 if (DEBUG_LAYOUT) Log.v(mTag, "Decor insets changing to: " 1681 + mAttachInfo.mStableInsets); 1682 // Need to relayout with content insets. 1683 contentInsetsChanged = true; 1684 } 1685 if (contentInsetsChanged || mLastSystemUiVisibility != 1686 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1687 || mLastOverscanRequested != mAttachInfo.mOverscanRequested 1688 || outsetsChanged) { 1689 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1690 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1691 mAttachInfo.mOutsets.set(mPendingOutsets); 1692 mApplyInsetsRequested = false; 1693 dispatchApplyInsets(host); 1694 } 1695 if (visibleInsetsChanged) { 1696 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1697 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1698 + mAttachInfo.mVisibleInsets); 1699 } 1700 1701 if (!hadSurface) { 1702 if (mSurface.isValid()) { 1703 // If we are creating a new surface, then we need to 1704 // completely redraw it. Also, when we get to the 1705 // point of drawing it we will hold off and schedule 1706 // a new traversal instead. This is so we can tell the 1707 // window manager about all of the windows being displayed 1708 // before actually drawing them, so it can display then 1709 // all at once. 1710 newSurface = true; 1711 mFullRedrawNeeded = true; 1712 mPreviousTransparentRegion.setEmpty(); 1713 1714 // Only initialize up-front if transparent regions are not 1715 // requested, otherwise defer to see if the entire window 1716 // will be transparent 1717 if (mAttachInfo.mHardwareRenderer != null) { 1718 try { 1719 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1720 mSurface); 1721 if (hwInitialized && (host.mPrivateFlags 1722 & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) == 0) { 1723 // Don't pre-allocate if transparent regions 1724 // are requested as they may not be needed 1725 mSurface.allocateBuffers(); 1726 } 1727 } catch (OutOfResourcesException e) { 1728 handleOutOfResourcesException(e); 1729 return; 1730 } 1731 } 1732 } 1733 } else if (!mSurface.isValid()) { 1734 // If the surface has been removed, then reset the scroll 1735 // positions. 1736 if (mLastScrolledFocus != null) { 1737 mLastScrolledFocus.clear(); 1738 } 1739 mScrollY = mCurScrollY = 0; 1740 if (mView instanceof RootViewSurfaceTaker) { 1741 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1742 } 1743 if (mScroller != null) { 1744 mScroller.abortAnimation(); 1745 } 1746 // Our surface is gone 1747 if (mAttachInfo.mHardwareRenderer != null && 1748 mAttachInfo.mHardwareRenderer.isEnabled()) { 1749 mAttachInfo.mHardwareRenderer.destroy(); 1750 } 1751 } else if ((surfaceGenerationId != mSurface.getGenerationId() 1752 || surfaceSizeChanged) 1753 && mSurfaceHolder == null 1754 && mAttachInfo.mHardwareRenderer != null) { 1755 mFullRedrawNeeded = true; 1756 try { 1757 // Need to do updateSurface (which leads to CanvasContext::setSurface and 1758 // re-create the EGLSurface) if either the Surface changed (as indicated by 1759 // generation id), or WindowManager changed the surface size. The latter is 1760 // because on some chips, changing the consumer side's BufferQueue size may 1761 // not take effect immediately unless we create a new EGLSurface. 1762 // Note that frame size change doesn't always imply surface size change (eg. 1763 // drag resizing uses fullscreen surface), need to check surfaceSizeChanged 1764 // flag from WindowManager. 1765 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1766 } catch (OutOfResourcesException e) { 1767 handleOutOfResourcesException(e); 1768 return; 1769 } 1770 } 1771 1772 final boolean dragResizing = (relayoutResult 1773 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING) != 0; 1774 if (mDragResizing != dragResizing) { 1775 if (dragResizing) { 1776 startDragResizing(mPendingBackDropFrame); 1777 } else { 1778 // We shouldn't come here, but if we come we should end the resize. 1779 endDragResizing(); 1780 } 1781 } 1782 if (!USE_MT_RENDERER) { 1783 if (dragResizing) { 1784 mCanvasOffsetX = mWinFrame.left; 1785 mCanvasOffsetY = mWinFrame.top; 1786 } else { 1787 mCanvasOffsetX = mCanvasOffsetY = 0; 1788 } 1789 } 1790 } catch (RemoteException e) { 1791 } 1792 1793 if (DEBUG_ORIENTATION) Log.v( 1794 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1795 1796 mAttachInfo.mWindowLeft = frame.left; 1797 mAttachInfo.mWindowTop = frame.top; 1798 1799 // !!FIXME!! This next section handles the case where we did not get the 1800 // window size we asked for. We should avoid this by getting a maximum size from 1801 // the window session beforehand. 1802 if (mWidth != frame.width() || mHeight != frame.height()) { 1803 mWidth = frame.width(); 1804 mHeight = frame.height(); 1805 } 1806 1807 if (mSurfaceHolder != null) { 1808 // The app owns the surface; tell it about what is going on. 1809 if (mSurface.isValid()) { 1810 // XXX .copyFrom() doesn't work! 1811 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1812 mSurfaceHolder.mSurface = mSurface; 1813 } 1814 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1815 mSurfaceHolder.mSurfaceLock.unlock(); 1816 if (mSurface.isValid()) { 1817 if (!hadSurface) { 1818 mSurfaceHolder.ungetCallbacks(); 1819 1820 mIsCreating = true; 1821 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1822 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1823 if (callbacks != null) { 1824 for (SurfaceHolder.Callback c : callbacks) { 1825 c.surfaceCreated(mSurfaceHolder); 1826 } 1827 } 1828 surfaceChanged = true; 1829 } 1830 if (surfaceChanged) { 1831 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1832 lp.format, mWidth, mHeight); 1833 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1834 if (callbacks != null) { 1835 for (SurfaceHolder.Callback c : callbacks) { 1836 c.surfaceChanged(mSurfaceHolder, lp.format, 1837 mWidth, mHeight); 1838 } 1839 } 1840 } 1841 mIsCreating = false; 1842 } else if (hadSurface) { 1843 mSurfaceHolder.ungetCallbacks(); 1844 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1845 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1846 if (callbacks != null) { 1847 for (SurfaceHolder.Callback c : callbacks) { 1848 c.surfaceDestroyed(mSurfaceHolder); 1849 } 1850 } 1851 mSurfaceHolder.mSurfaceLock.lock(); 1852 try { 1853 mSurfaceHolder.mSurface = new Surface(); 1854 } finally { 1855 mSurfaceHolder.mSurfaceLock.unlock(); 1856 } 1857 } 1858 } 1859 1860 final ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 1861 if (hardwareRenderer != null && hardwareRenderer.isEnabled()) { 1862 if (hwInitialized 1863 || mWidth != hardwareRenderer.getWidth() 1864 || mHeight != hardwareRenderer.getHeight()) { 1865 hardwareRenderer.setup(mWidth, mHeight, mAttachInfo, 1866 mWindowAttributes.surfaceInsets); 1867 } 1868 } 1869 1870 if (!mStopped || mReportNextDraw) { 1871 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1872 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1873 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1874 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1875 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1876 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1877 1878 if (DEBUG_LAYOUT) Log.v(mTag, "Ooops, something changed! mWidth=" 1879 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1880 + " mHeight=" + mHeight 1881 + " measuredHeight=" + host.getMeasuredHeight() 1882 + " coveredInsetsChanged=" + contentInsetsChanged); 1883 1884 // Ask host how big it wants to be 1885 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1886 1887 // Implementation of weights from WindowManager.LayoutParams 1888 // We just grow the dimensions as needed and re-measure if 1889 // needs be 1890 int width = host.getMeasuredWidth(); 1891 int height = host.getMeasuredHeight(); 1892 boolean measureAgain = false; 1893 1894 if (lp.horizontalWeight > 0.0f) { 1895 width += (int) ((mWidth - width) * lp.horizontalWeight); 1896 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1897 MeasureSpec.EXACTLY); 1898 measureAgain = true; 1899 } 1900 if (lp.verticalWeight > 0.0f) { 1901 height += (int) ((mHeight - height) * lp.verticalWeight); 1902 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1903 MeasureSpec.EXACTLY); 1904 measureAgain = true; 1905 } 1906 1907 if (measureAgain) { 1908 if (DEBUG_LAYOUT) Log.v(mTag, 1909 "And hey let's measure once more: width=" + width 1910 + " height=" + height); 1911 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1912 } 1913 1914 layoutRequested = true; 1915 } 1916 } 1917 } else { 1918 // Not the first pass and no window/insets/visibility change but the window 1919 // may have moved and we need check that and if so to update the left and right 1920 // in the attach info. We translate only the window frame since on window move 1921 // the window manager tells us only for the new frame but the insets are the 1922 // same and we do not want to translate them more than once. 1923 1924 // TODO: Well, we are checking whether the frame has changed similarly 1925 // to how this is done for the insets. This is however incorrect since 1926 // the insets and the frame are translated. For example, the old frame 1927 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1928 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1929 // true since we are comparing a not translated value to a translated one. 1930 // This scenario is rare but we may want to fix that. 1931 1932 final boolean windowMoved = (mAttachInfo.mWindowLeft != frame.left 1933 || mAttachInfo.mWindowTop != frame.top); 1934 if (windowMoved) { 1935 if (mTranslator != null) { 1936 mTranslator.translateRectInScreenToAppWinFrame(frame); 1937 } 1938 mAttachInfo.mWindowLeft = frame.left; 1939 mAttachInfo.mWindowTop = frame.top; 1940 1941 // Update the light position for the new window offsets. 1942 if (mAttachInfo.mHardwareRenderer != null) { 1943 mAttachInfo.mHardwareRenderer.setLightCenter(mAttachInfo); 1944 } 1945 } 1946 } 1947 1948 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 1949 boolean triggerGlobalLayoutListener = didLayout 1950 || mAttachInfo.mRecomputeGlobalAttributes; 1951 if (didLayout) { 1952 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1953 1954 // By this point all views have been sized and positioned 1955 // We can compute the transparent area 1956 1957 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1958 // start out transparent 1959 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1960 host.getLocationInWindow(mTmpLocation); 1961 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1962 mTmpLocation[0] + host.mRight - host.mLeft, 1963 mTmpLocation[1] + host.mBottom - host.mTop); 1964 1965 host.gatherTransparentRegion(mTransparentRegion); 1966 if (mTranslator != null) { 1967 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1968 } 1969 1970 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1971 mPreviousTransparentRegion.set(mTransparentRegion); 1972 mFullRedrawNeeded = true; 1973 // reconfigure window manager 1974 try { 1975 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1976 } catch (RemoteException e) { 1977 } 1978 } 1979 } 1980 1981 if (DBG) { 1982 System.out.println("======================================"); 1983 System.out.println("performTraversals -- after setFrame"); 1984 host.debug(); 1985 } 1986 } 1987 1988 if (triggerGlobalLayoutListener) { 1989 mAttachInfo.mRecomputeGlobalAttributes = false; 1990 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1991 } 1992 1993 if (computesInternalInsets) { 1994 // Clear the original insets. 1995 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 1996 insets.reset(); 1997 1998 // Compute new insets in place. 1999 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 2000 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 2001 2002 // Tell the window manager. 2003 if (insetsPending || !mLastGivenInsets.equals(insets)) { 2004 mLastGivenInsets.set(insets); 2005 2006 // Translate insets to screen coordinates if needed. 2007 final Rect contentInsets; 2008 final Rect visibleInsets; 2009 final Region touchableRegion; 2010 if (mTranslator != null) { 2011 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 2012 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 2013 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 2014 } else { 2015 contentInsets = insets.contentInsets; 2016 visibleInsets = insets.visibleInsets; 2017 touchableRegion = insets.touchableRegion; 2018 } 2019 2020 try { 2021 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 2022 contentInsets, visibleInsets, touchableRegion); 2023 } catch (RemoteException e) { 2024 } 2025 } 2026 } 2027 2028 if (mFirst) { 2029 // handle first focus request 2030 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: mView.hasFocus()=" 2031 + mView.hasFocus()); 2032 if (mView != null) { 2033 if (!mView.hasFocus()) { 2034 mView.requestFocus(View.FOCUS_FORWARD); 2035 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: requested focused view=" 2036 + mView.findFocus()); 2037 } else { 2038 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: existing focused view=" 2039 + mView.findFocus()); 2040 } 2041 } 2042 } 2043 2044 final boolean changedVisibility = (viewVisibilityChanged || mFirst) && isViewVisible; 2045 final boolean hasWindowFocus = mAttachInfo.mHasWindowFocus && isViewVisible; 2046 final boolean regainedFocus = hasWindowFocus && mLostWindowFocus; 2047 if (regainedFocus) { 2048 mLostWindowFocus = false; 2049 } else if (!hasWindowFocus && mHadWindowFocus) { 2050 mLostWindowFocus = true; 2051 } 2052 2053 if (changedVisibility || regainedFocus) { 2054 host.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2055 } 2056 2057 mFirst = false; 2058 mWillDrawSoon = false; 2059 mNewSurfaceNeeded = false; 2060 mViewVisibility = viewVisibility; 2061 mHadWindowFocus = hasWindowFocus; 2062 2063 if (hasWindowFocus && !isInLocalFocusMode()) { 2064 final boolean imTarget = WindowManager.LayoutParams 2065 .mayUseInputMethod(mWindowAttributes.flags); 2066 if (imTarget != mLastWasImTarget) { 2067 mLastWasImTarget = imTarget; 2068 InputMethodManager imm = InputMethodManager.peekInstance(); 2069 if (imm != null && imTarget) { 2070 imm.onPreWindowFocus(mView, hasWindowFocus); 2071 imm.onPostWindowFocus(mView, mView.findFocus(), 2072 mWindowAttributes.softInputMode, 2073 !mHasHadWindowFocus, mWindowAttributes.flags); 2074 } 2075 } 2076 } 2077 2078 // Remember if we must report the next draw. 2079 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 2080 mReportNextDraw = true; 2081 } 2082 2083 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || !isViewVisible; 2084 2085 if (!cancelDraw && !newSurface) { 2086 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2087 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2088 mPendingTransitions.get(i).startChangingAnimations(); 2089 } 2090 mPendingTransitions.clear(); 2091 } 2092 2093 performDraw(); 2094 } else { 2095 if (isViewVisible) { 2096 // Try again 2097 scheduleTraversals(); 2098 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2099 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2100 mPendingTransitions.get(i).endChangingAnimations(); 2101 } 2102 mPendingTransitions.clear(); 2103 } 2104 } 2105 2106 mIsInTraversal = false; 2107 } 2108 2109 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2110 Log.e(mTag, "OutOfResourcesException initializing HW surface", e); 2111 try { 2112 if (!mWindowSession.outOfMemory(mWindow) && 2113 Process.myUid() != Process.SYSTEM_UID) { 2114 Slog.w(mTag, "No processes killed for memory; killing self"); 2115 Process.killProcess(Process.myPid()); 2116 } 2117 } catch (RemoteException ex) { 2118 } 2119 mLayoutRequested = true; // ask wm for a new surface next time. 2120 } 2121 2122 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2123 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2124 try { 2125 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2126 } finally { 2127 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2128 } 2129 } 2130 2131 /** 2132 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2133 * is currently undergoing a layout pass. 2134 * 2135 * @return whether the view hierarchy is currently undergoing a layout pass 2136 */ 2137 boolean isInLayout() { 2138 return mInLayout; 2139 } 2140 2141 /** 2142 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2143 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2144 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2145 * all children in that container hierarchy are measured and laid out at the end of the layout 2146 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2147 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2148 * we check all of those views to see if any still have pending layout requests, which 2149 * indicates that they were not correctly handled by their container hierarchy. If that is 2150 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2151 * to blank containers, and force a second request/measure/layout pass in this frame. If 2152 * more requestLayout() calls are received during that second layout pass, we post those 2153 * requests to the next frame to avoid possible infinite loops. 2154 * 2155 * <p>The return value from this method indicates whether the request should proceed 2156 * (if it is a request during the first layout pass) or should be skipped and posted to the 2157 * next frame (if it is a request during the second layout pass).</p> 2158 * 2159 * @param view the view that requested the layout. 2160 * 2161 * @return true if request should proceed, false otherwise. 2162 */ 2163 boolean requestLayoutDuringLayout(final View view) { 2164 if (view.mParent == null || view.mAttachInfo == null) { 2165 // Would not normally trigger another layout, so just let it pass through as usual 2166 return true; 2167 } 2168 if (!mLayoutRequesters.contains(view)) { 2169 mLayoutRequesters.add(view); 2170 } 2171 if (!mHandlingLayoutInLayoutRequest) { 2172 // Let the request proceed normally; it will be processed in a second layout pass 2173 // if necessary 2174 return true; 2175 } else { 2176 // Don't let the request proceed during the second layout pass. 2177 // It will post to the next frame instead. 2178 return false; 2179 } 2180 } 2181 2182 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2183 int desiredWindowHeight) { 2184 mLayoutRequested = false; 2185 mScrollMayChange = true; 2186 mInLayout = true; 2187 2188 final View host = mView; 2189 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2190 Log.v(mTag, "Laying out " + host + " to (" + 2191 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2192 } 2193 2194 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2195 try { 2196 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2197 2198 mInLayout = false; 2199 int numViewsRequestingLayout = mLayoutRequesters.size(); 2200 if (numViewsRequestingLayout > 0) { 2201 // requestLayout() was called during layout. 2202 // If no layout-request flags are set on the requesting views, there is no problem. 2203 // If some requests are still pending, then we need to clear those flags and do 2204 // a full request/measure/layout pass to handle this situation. 2205 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2206 false); 2207 if (validLayoutRequesters != null) { 2208 // Set this flag to indicate that any further requests are happening during 2209 // the second pass, which may result in posting those requests to the next 2210 // frame instead 2211 mHandlingLayoutInLayoutRequest = true; 2212 2213 // Process fresh layout requests, then measure and layout 2214 int numValidRequests = validLayoutRequesters.size(); 2215 for (int i = 0; i < numValidRequests; ++i) { 2216 final View view = validLayoutRequesters.get(i); 2217 Log.w("View", "requestLayout() improperly called by " + view + 2218 " during layout: running second layout pass"); 2219 view.requestLayout(); 2220 } 2221 measureHierarchy(host, lp, mView.getContext().getResources(), 2222 desiredWindowWidth, desiredWindowHeight); 2223 mInLayout = true; 2224 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2225 2226 mHandlingLayoutInLayoutRequest = false; 2227 2228 // Check the valid requests again, this time without checking/clearing the 2229 // layout flags, since requests happening during the second pass get noop'd 2230 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2231 if (validLayoutRequesters != null) { 2232 final ArrayList<View> finalRequesters = validLayoutRequesters; 2233 // Post second-pass requests to the next frame 2234 getRunQueue().post(new Runnable() { 2235 @Override 2236 public void run() { 2237 int numValidRequests = finalRequesters.size(); 2238 for (int i = 0; i < numValidRequests; ++i) { 2239 final View view = finalRequesters.get(i); 2240 Log.w("View", "requestLayout() improperly called by " + view + 2241 " during second layout pass: posting in next frame"); 2242 view.requestLayout(); 2243 } 2244 } 2245 }); 2246 } 2247 } 2248 2249 } 2250 } finally { 2251 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2252 } 2253 mInLayout = false; 2254 } 2255 2256 /** 2257 * This method is called during layout when there have been calls to requestLayout() during 2258 * layout. It walks through the list of views that requested layout to determine which ones 2259 * still need it, based on visibility in the hierarchy and whether they have already been 2260 * handled (as is usually the case with ListView children). 2261 * 2262 * @param layoutRequesters The list of views that requested layout during layout 2263 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2264 * If so, the FORCE_LAYOUT flag was not set on requesters. 2265 * @return A list of the actual views that still need to be laid out. 2266 */ 2267 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2268 boolean secondLayoutRequests) { 2269 2270 int numViewsRequestingLayout = layoutRequesters.size(); 2271 ArrayList<View> validLayoutRequesters = null; 2272 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2273 View view = layoutRequesters.get(i); 2274 if (view != null && view.mAttachInfo != null && view.mParent != null && 2275 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2276 View.PFLAG_FORCE_LAYOUT)) { 2277 boolean gone = false; 2278 View parent = view; 2279 // Only trigger new requests for views in a non-GONE hierarchy 2280 while (parent != null) { 2281 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2282 gone = true; 2283 break; 2284 } 2285 if (parent.mParent instanceof View) { 2286 parent = (View) parent.mParent; 2287 } else { 2288 parent = null; 2289 } 2290 } 2291 if (!gone) { 2292 if (validLayoutRequesters == null) { 2293 validLayoutRequesters = new ArrayList<View>(); 2294 } 2295 validLayoutRequesters.add(view); 2296 } 2297 } 2298 } 2299 if (!secondLayoutRequests) { 2300 // If we're checking the layout flags, then we need to clean them up also 2301 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2302 View view = layoutRequesters.get(i); 2303 while (view != null && 2304 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2305 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2306 if (view.mParent instanceof View) { 2307 view = (View) view.mParent; 2308 } else { 2309 view = null; 2310 } 2311 } 2312 } 2313 } 2314 layoutRequesters.clear(); 2315 return validLayoutRequesters; 2316 } 2317 2318 @Override 2319 public void requestTransparentRegion(View child) { 2320 // the test below should not fail unless someone is messing with us 2321 checkThread(); 2322 if (mView == child) { 2323 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2324 // Need to make sure we re-evaluate the window attributes next 2325 // time around, to ensure the window has the correct format. 2326 mWindowAttributesChanged = true; 2327 mWindowAttributesChangesFlag = 0; 2328 requestLayout(); 2329 } 2330 } 2331 2332 /** 2333 * Figures out the measure spec for the root view in a window based on it's 2334 * layout params. 2335 * 2336 * @param windowSize 2337 * The available width or height of the window 2338 * 2339 * @param rootDimension 2340 * The layout params for one dimension (width or height) of the 2341 * window. 2342 * 2343 * @return The measure spec to use to measure the root view. 2344 */ 2345 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2346 int measureSpec; 2347 switch (rootDimension) { 2348 2349 case ViewGroup.LayoutParams.MATCH_PARENT: 2350 // Window can't resize. Force root view to be windowSize. 2351 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2352 break; 2353 case ViewGroup.LayoutParams.WRAP_CONTENT: 2354 // Window can resize. Set max size for root view. 2355 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2356 break; 2357 default: 2358 // Window wants to be an exact size. Force root view to be that size. 2359 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2360 break; 2361 } 2362 return measureSpec; 2363 } 2364 2365 int mHardwareXOffset; 2366 int mHardwareYOffset; 2367 2368 @Override 2369 public void onHardwarePreDraw(DisplayListCanvas canvas) { 2370 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2371 } 2372 2373 @Override 2374 public void onHardwarePostDraw(DisplayListCanvas canvas) { 2375 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2376 } 2377 2378 /** 2379 * @hide 2380 */ 2381 void outputDisplayList(View view) { 2382 view.mRenderNode.output(); 2383 if (mAttachInfo.mHardwareRenderer != null) { 2384 ((ThreadedRenderer)mAttachInfo.mHardwareRenderer).serializeDisplayListTree(); 2385 } 2386 } 2387 2388 /** 2389 * @see #PROPERTY_PROFILE_RENDERING 2390 */ 2391 private void profileRendering(boolean enabled) { 2392 if (mProfileRendering) { 2393 mRenderProfilingEnabled = enabled; 2394 2395 if (mRenderProfiler != null) { 2396 mChoreographer.removeFrameCallback(mRenderProfiler); 2397 } 2398 if (mRenderProfilingEnabled) { 2399 if (mRenderProfiler == null) { 2400 mRenderProfiler = new Choreographer.FrameCallback() { 2401 @Override 2402 public void doFrame(long frameTimeNanos) { 2403 mDirty.set(0, 0, mWidth, mHeight); 2404 scheduleTraversals(); 2405 if (mRenderProfilingEnabled) { 2406 mChoreographer.postFrameCallback(mRenderProfiler); 2407 } 2408 } 2409 }; 2410 } 2411 mChoreographer.postFrameCallback(mRenderProfiler); 2412 } else { 2413 mRenderProfiler = null; 2414 } 2415 } 2416 } 2417 2418 /** 2419 * Called from draw() when DEBUG_FPS is enabled 2420 */ 2421 private void trackFPS() { 2422 // Tracks frames per second drawn. First value in a series of draws may be bogus 2423 // because it down not account for the intervening idle time 2424 long nowTime = System.currentTimeMillis(); 2425 if (mFpsStartTime < 0) { 2426 mFpsStartTime = mFpsPrevTime = nowTime; 2427 mFpsNumFrames = 0; 2428 } else { 2429 ++mFpsNumFrames; 2430 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2431 long frameTime = nowTime - mFpsPrevTime; 2432 long totalTime = nowTime - mFpsStartTime; 2433 Log.v(mTag, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2434 mFpsPrevTime = nowTime; 2435 if (totalTime > 1000) { 2436 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2437 Log.v(mTag, "0x" + thisHash + "\tFPS:\t" + fps); 2438 mFpsStartTime = nowTime; 2439 mFpsNumFrames = 0; 2440 } 2441 } 2442 } 2443 2444 private void performDraw() { 2445 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2446 return; 2447 } 2448 2449 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2450 mFullRedrawNeeded = false; 2451 2452 mIsDrawing = true; 2453 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2454 try { 2455 draw(fullRedrawNeeded); 2456 } finally { 2457 mIsDrawing = false; 2458 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2459 } 2460 2461 // For whatever reason we didn't create a HardwareRenderer, end any 2462 // hardware animations that are now dangling 2463 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2464 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2465 for (int i = 0; i < count; i++) { 2466 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2467 } 2468 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2469 } 2470 2471 if (mReportNextDraw) { 2472 mReportNextDraw = false; 2473 2474 // if we're using multi-thread renderer, wait for the window frame draws 2475 if (mWindowDrawCountDown != null) { 2476 try { 2477 mWindowDrawCountDown.await(); 2478 } catch (InterruptedException e) { 2479 Log.e(mTag, "Window redraw count down interruped!"); 2480 } 2481 mWindowDrawCountDown = null; 2482 } 2483 2484 if (mAttachInfo.mHardwareRenderer != null) { 2485 mAttachInfo.mHardwareRenderer.fence(); 2486 } 2487 2488 if (LOCAL_LOGV) { 2489 Log.v(mTag, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2490 } 2491 if (mSurfaceHolder != null && mSurface.isValid()) { 2492 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2493 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2494 if (callbacks != null) { 2495 for (SurfaceHolder.Callback c : callbacks) { 2496 if (c instanceof SurfaceHolder.Callback2) { 2497 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded(mSurfaceHolder); 2498 } 2499 } 2500 } 2501 } 2502 try { 2503 mWindowSession.finishDrawing(mWindow); 2504 } catch (RemoteException e) { 2505 } 2506 } 2507 } 2508 2509 private void draw(boolean fullRedrawNeeded) { 2510 Surface surface = mSurface; 2511 if (!surface.isValid()) { 2512 return; 2513 } 2514 2515 if (DEBUG_FPS) { 2516 trackFPS(); 2517 } 2518 2519 if (!sFirstDrawComplete) { 2520 synchronized (sFirstDrawHandlers) { 2521 sFirstDrawComplete = true; 2522 final int count = sFirstDrawHandlers.size(); 2523 for (int i = 0; i< count; i++) { 2524 mHandler.post(sFirstDrawHandlers.get(i)); 2525 } 2526 } 2527 } 2528 2529 scrollToRectOrFocus(null, false); 2530 2531 if (mAttachInfo.mViewScrollChanged) { 2532 mAttachInfo.mViewScrollChanged = false; 2533 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2534 } 2535 2536 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2537 final int curScrollY; 2538 if (animating) { 2539 curScrollY = mScroller.getCurrY(); 2540 } else { 2541 curScrollY = mScrollY; 2542 } 2543 if (mCurScrollY != curScrollY) { 2544 mCurScrollY = curScrollY; 2545 fullRedrawNeeded = true; 2546 if (mView instanceof RootViewSurfaceTaker) { 2547 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2548 } 2549 } 2550 2551 final float appScale = mAttachInfo.mApplicationScale; 2552 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2553 2554 int resizeAlpha = 0; 2555 2556 final Rect dirty = mDirty; 2557 if (mSurfaceHolder != null) { 2558 // The app owns the surface, we won't draw. 2559 dirty.setEmpty(); 2560 if (animating && mScroller != null) { 2561 mScroller.abortAnimation(); 2562 } 2563 return; 2564 } 2565 2566 if (fullRedrawNeeded) { 2567 mAttachInfo.mIgnoreDirtyState = true; 2568 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2569 } 2570 2571 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2572 Log.v(mTag, "Draw " + mView + "/" 2573 + mWindowAttributes.getTitle() 2574 + ": dirty={" + dirty.left + "," + dirty.top 2575 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2576 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2577 appScale + ", width=" + mWidth + ", height=" + mHeight); 2578 } 2579 2580 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2581 2582 int xOffset = -mCanvasOffsetX; 2583 int yOffset = -mCanvasOffsetY + curScrollY; 2584 final WindowManager.LayoutParams params = mWindowAttributes; 2585 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2586 if (surfaceInsets != null) { 2587 xOffset -= surfaceInsets.left; 2588 yOffset -= surfaceInsets.top; 2589 2590 // Offset dirty rect for surface insets. 2591 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2592 } 2593 2594 boolean accessibilityFocusDirty = false; 2595 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2596 if (drawable != null) { 2597 final Rect bounds = mAttachInfo.mTmpInvalRect; 2598 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2599 if (!hasFocus) { 2600 bounds.setEmpty(); 2601 } 2602 if (!bounds.equals(drawable.getBounds())) { 2603 accessibilityFocusDirty = true; 2604 } 2605 } 2606 2607 mAttachInfo.mDrawingTime = 2608 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2609 2610 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2611 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2612 // If accessibility focus moved, always invalidate the root. 2613 boolean invalidateRoot = accessibilityFocusDirty; 2614 2615 // Draw with hardware renderer. 2616 mIsAnimating = false; 2617 2618 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2619 mHardwareYOffset = yOffset; 2620 mHardwareXOffset = xOffset; 2621 invalidateRoot = true; 2622 } 2623 2624 if (invalidateRoot) { 2625 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2626 } 2627 2628 dirty.setEmpty(); 2629 2630 // Stage the content drawn size now. It will be transferred to the renderer 2631 // shortly before the draw commands get send to the renderer. 2632 final boolean updated = updateContentDrawBounds(); 2633 2634 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2635 2636 if (updated) { 2637 requestDrawWindow(); 2638 } 2639 } else { 2640 // If we get here with a disabled & requested hardware renderer, something went 2641 // wrong (an invalidate posted right before we destroyed the hardware surface 2642 // for instance) so we should just bail out. Locking the surface with software 2643 // rendering at this point would lock it forever and prevent hardware renderer 2644 // from doing its job when it comes back. 2645 // Before we request a new frame we must however attempt to reinitiliaze the 2646 // hardware renderer if it's in requested state. This would happen after an 2647 // eglTerminate() for instance. 2648 if (mAttachInfo.mHardwareRenderer != null && 2649 !mAttachInfo.mHardwareRenderer.isEnabled() && 2650 mAttachInfo.mHardwareRenderer.isRequested()) { 2651 2652 try { 2653 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2654 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 2655 } catch (OutOfResourcesException e) { 2656 handleOutOfResourcesException(e); 2657 return; 2658 } 2659 2660 mFullRedrawNeeded = true; 2661 scheduleTraversals(); 2662 return; 2663 } 2664 2665 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2666 return; 2667 } 2668 } 2669 } 2670 2671 if (animating) { 2672 mFullRedrawNeeded = true; 2673 scheduleTraversals(); 2674 } 2675 } 2676 2677 /** 2678 * @return true if drawing was successful, false if an error occurred 2679 */ 2680 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2681 boolean scalingRequired, Rect dirty) { 2682 2683 // Draw with software renderer. 2684 final Canvas canvas; 2685 try { 2686 final int left = dirty.left; 2687 final int top = dirty.top; 2688 final int right = dirty.right; 2689 final int bottom = dirty.bottom; 2690 2691 canvas = mSurface.lockCanvas(dirty); 2692 2693 // The dirty rectangle can be modified by Surface.lockCanvas() 2694 //noinspection ConstantConditions 2695 if (left != dirty.left || top != dirty.top || right != dirty.right 2696 || bottom != dirty.bottom) { 2697 attachInfo.mIgnoreDirtyState = true; 2698 } 2699 2700 // TODO: Do this in native 2701 canvas.setDensity(mDensity); 2702 } catch (Surface.OutOfResourcesException e) { 2703 handleOutOfResourcesException(e); 2704 return false; 2705 } catch (IllegalArgumentException e) { 2706 Log.e(mTag, "Could not lock surface", e); 2707 // Don't assume this is due to out of memory, it could be 2708 // something else, and if it is something else then we could 2709 // kill stuff (or ourself) for no reason. 2710 mLayoutRequested = true; // ask wm for a new surface next time. 2711 return false; 2712 } 2713 2714 try { 2715 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2716 Log.v(mTag, "Surface " + surface + " drawing to bitmap w=" 2717 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2718 //canvas.drawARGB(255, 255, 0, 0); 2719 } 2720 2721 // If this bitmap's format includes an alpha channel, we 2722 // need to clear it before drawing so that the child will 2723 // properly re-composite its drawing on a transparent 2724 // background. This automatically respects the clip/dirty region 2725 // or 2726 // If we are applying an offset, we need to clear the area 2727 // where the offset doesn't appear to avoid having garbage 2728 // left in the blank areas. 2729 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2730 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2731 } 2732 2733 dirty.setEmpty(); 2734 mIsAnimating = false; 2735 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2736 2737 if (DEBUG_DRAW) { 2738 Context cxt = mView.getContext(); 2739 Log.i(mTag, "Drawing: package:" + cxt.getPackageName() + 2740 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2741 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2742 } 2743 try { 2744 canvas.translate(-xoff, -yoff); 2745 if (mTranslator != null) { 2746 mTranslator.translateCanvas(canvas); 2747 } 2748 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2749 attachInfo.mSetIgnoreDirtyState = false; 2750 2751 mView.draw(canvas); 2752 2753 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2754 } finally { 2755 if (!attachInfo.mSetIgnoreDirtyState) { 2756 // Only clear the flag if it was not set during the mView.draw() call 2757 attachInfo.mIgnoreDirtyState = false; 2758 } 2759 } 2760 } finally { 2761 try { 2762 surface.unlockCanvasAndPost(canvas); 2763 } catch (IllegalArgumentException e) { 2764 Log.e(mTag, "Could not unlock surface", e); 2765 mLayoutRequested = true; // ask wm for a new surface next time. 2766 //noinspection ReturnInsideFinallyBlock 2767 return false; 2768 } 2769 2770 if (LOCAL_LOGV) { 2771 Log.v(mTag, "Surface " + surface + " unlockCanvasAndPost"); 2772 } 2773 } 2774 return true; 2775 } 2776 2777 /** 2778 * We want to draw a highlight around the current accessibility focused. 2779 * Since adding a style for all possible view is not a viable option we 2780 * have this specialized drawing method. 2781 * 2782 * Note: We are doing this here to be able to draw the highlight for 2783 * virtual views in addition to real ones. 2784 * 2785 * @param canvas The canvas on which to draw. 2786 */ 2787 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2788 final Rect bounds = mAttachInfo.mTmpInvalRect; 2789 if (getAccessibilityFocusedRect(bounds)) { 2790 final Drawable drawable = getAccessibilityFocusedDrawable(); 2791 if (drawable != null) { 2792 drawable.setBounds(bounds); 2793 drawable.draw(canvas); 2794 } 2795 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2796 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2797 } 2798 } 2799 2800 private boolean getAccessibilityFocusedRect(Rect bounds) { 2801 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2802 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2803 return false; 2804 } 2805 2806 final View host = mAccessibilityFocusedHost; 2807 if (host == null || host.mAttachInfo == null) { 2808 return false; 2809 } 2810 2811 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2812 if (provider == null) { 2813 host.getBoundsOnScreen(bounds, true); 2814 } else if (mAccessibilityFocusedVirtualView != null) { 2815 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2816 } else { 2817 return false; 2818 } 2819 2820 // Transform the rect into window-relative coordinates. 2821 final AttachInfo attachInfo = mAttachInfo; 2822 bounds.offset(0, attachInfo.mViewRootImpl.mScrollY); 2823 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2824 if (!bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, 2825 attachInfo.mViewRootImpl.mHeight)) { 2826 // If no intersection, set bounds to empty. 2827 bounds.setEmpty(); 2828 } 2829 return !bounds.isEmpty(); 2830 } 2831 2832 private Drawable getAccessibilityFocusedDrawable() { 2833 // Lazily load the accessibility focus drawable. 2834 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2835 final TypedValue value = new TypedValue(); 2836 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2837 R.attr.accessibilityFocusedDrawable, value, true); 2838 if (resolved) { 2839 mAttachInfo.mAccessibilityFocusDrawable = 2840 mView.mContext.getDrawable(value.resourceId); 2841 } 2842 } 2843 return mAttachInfo.mAccessibilityFocusDrawable; 2844 } 2845 2846 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2847 final Rect ci = mAttachInfo.mContentInsets; 2848 final Rect vi = mAttachInfo.mVisibleInsets; 2849 int scrollY = 0; 2850 boolean handled = false; 2851 2852 if (vi.left > ci.left || vi.top > ci.top 2853 || vi.right > ci.right || vi.bottom > ci.bottom) { 2854 // We'll assume that we aren't going to change the scroll 2855 // offset, since we want to avoid that unless it is actually 2856 // going to make the focus visible... otherwise we scroll 2857 // all over the place. 2858 scrollY = mScrollY; 2859 // We can be called for two different situations: during a draw, 2860 // to update the scroll position if the focus has changed (in which 2861 // case 'rectangle' is null), or in response to a 2862 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2863 // is non-null and we just want to scroll to whatever that 2864 // rectangle is). 2865 final View focus = mView.findFocus(); 2866 if (focus == null) { 2867 return false; 2868 } 2869 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2870 if (focus != lastScrolledFocus) { 2871 // If the focus has changed, then ignore any requests to scroll 2872 // to a rectangle; first we want to make sure the entire focus 2873 // view is visible. 2874 rectangle = null; 2875 } 2876 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Eval scroll: focus=" + focus 2877 + " rectangle=" + rectangle + " ci=" + ci 2878 + " vi=" + vi); 2879 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2880 // Optimization: if the focus hasn't changed since last 2881 // time, and no layout has happened, then just leave things 2882 // as they are. 2883 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Keeping scroll y=" 2884 + mScrollY + " vi=" + vi.toShortString()); 2885 } else { 2886 // We need to determine if the currently focused view is 2887 // within the visible part of the window and, if not, apply 2888 // a pan so it can be seen. 2889 mLastScrolledFocus = new WeakReference<View>(focus); 2890 mScrollMayChange = false; 2891 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Need to scroll?"); 2892 // Try to find the rectangle from the focus view. 2893 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2894 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Root w=" 2895 + mView.getWidth() + " h=" + mView.getHeight() 2896 + " ci=" + ci.toShortString() 2897 + " vi=" + vi.toShortString()); 2898 if (rectangle == null) { 2899 focus.getFocusedRect(mTempRect); 2900 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Focus " + focus 2901 + ": focusRect=" + mTempRect.toShortString()); 2902 if (mView instanceof ViewGroup) { 2903 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2904 focus, mTempRect); 2905 } 2906 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2907 "Focus in window: focusRect=" 2908 + mTempRect.toShortString() 2909 + " visRect=" + mVisRect.toShortString()); 2910 } else { 2911 mTempRect.set(rectangle); 2912 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2913 "Request scroll to rect: " 2914 + mTempRect.toShortString() 2915 + " visRect=" + mVisRect.toShortString()); 2916 } 2917 if (mTempRect.intersect(mVisRect)) { 2918 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2919 "Focus window visible rect: " 2920 + mTempRect.toShortString()); 2921 if (mTempRect.height() > 2922 (mView.getHeight()-vi.top-vi.bottom)) { 2923 // If the focus simply is not going to fit, then 2924 // best is probably just to leave things as-is. 2925 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2926 "Too tall; leaving scrollY=" + scrollY); 2927 } else if ((mTempRect.top-scrollY) < vi.top) { 2928 scrollY -= vi.top - (mTempRect.top-scrollY); 2929 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2930 "Top covered; scrollY=" + scrollY); 2931 } else if ((mTempRect.bottom-scrollY) 2932 > (mView.getHeight()-vi.bottom)) { 2933 scrollY += (mTempRect.bottom-scrollY) 2934 - (mView.getHeight()-vi.bottom); 2935 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2936 "Bottom covered; scrollY=" + scrollY); 2937 } 2938 handled = true; 2939 } 2940 } 2941 } 2942 } 2943 2944 if (scrollY != mScrollY) { 2945 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Pan scroll changed: old=" 2946 + mScrollY + " , new=" + scrollY); 2947 if (!immediate) { 2948 if (mScroller == null) { 2949 mScroller = new Scroller(mView.getContext()); 2950 } 2951 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2952 } else if (mScroller != null) { 2953 mScroller.abortAnimation(); 2954 } 2955 mScrollY = scrollY; 2956 } 2957 2958 return handled; 2959 } 2960 2961 /** 2962 * @hide 2963 */ 2964 public View getAccessibilityFocusedHost() { 2965 return mAccessibilityFocusedHost; 2966 } 2967 2968 /** 2969 * @hide 2970 */ 2971 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2972 return mAccessibilityFocusedVirtualView; 2973 } 2974 2975 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2976 // If we have a virtual view with accessibility focus we need 2977 // to clear the focus and invalidate the virtual view bounds. 2978 if (mAccessibilityFocusedVirtualView != null) { 2979 2980 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2981 View focusHost = mAccessibilityFocusedHost; 2982 2983 // Wipe the state of the current accessibility focus since 2984 // the call into the provider to clear accessibility focus 2985 // will fire an accessibility event which will end up calling 2986 // this method and we want to have clean state when this 2987 // invocation happens. 2988 mAccessibilityFocusedHost = null; 2989 mAccessibilityFocusedVirtualView = null; 2990 2991 // Clear accessibility focus on the host after clearing state since 2992 // this method may be reentrant. 2993 focusHost.clearAccessibilityFocusNoCallbacks(); 2994 2995 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2996 if (provider != null) { 2997 // Invalidate the area of the cleared accessibility focus. 2998 focusNode.getBoundsInParent(mTempRect); 2999 focusHost.invalidate(mTempRect); 3000 // Clear accessibility focus in the virtual node. 3001 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 3002 focusNode.getSourceNodeId()); 3003 provider.performAction(virtualNodeId, 3004 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 3005 } 3006 focusNode.recycle(); 3007 } 3008 if (mAccessibilityFocusedHost != null) { 3009 // Clear accessibility focus in the view. 3010 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 3011 } 3012 3013 // Set the new focus host and node. 3014 mAccessibilityFocusedHost = view; 3015 mAccessibilityFocusedVirtualView = node; 3016 3017 if (mAttachInfo.mHardwareRenderer != null) { 3018 mAttachInfo.mHardwareRenderer.invalidateRoot(); 3019 } 3020 } 3021 3022 void setPointerCapture(View view) { 3023 if (!mAttachInfo.mHasWindowFocus) { 3024 Log.w(mTag, "Can't set capture if it's not focused."); 3025 return; 3026 } 3027 if (mCapturingView == view) { 3028 return; 3029 } 3030 mCapturingView = view; 3031 InputManager.getInstance().setPointerIconDetached(true); 3032 } 3033 3034 void releasePointerCapture(View view) { 3035 if (mCapturingView != view || mCapturingView == null) { 3036 return; 3037 } 3038 3039 mCapturingView = null; 3040 InputManager.getInstance().setPointerIconDetached(false); 3041 } 3042 3043 boolean hasPointerCapture(View view) { 3044 return view != null && mCapturingView == view; 3045 } 3046 3047 @Override 3048 public void requestChildFocus(View child, View focused) { 3049 if (DEBUG_INPUT_RESIZE) { 3050 Log.v(mTag, "Request child focus: focus now " + focused); 3051 } 3052 checkThread(); 3053 scheduleTraversals(); 3054 } 3055 3056 @Override 3057 public void clearChildFocus(View child) { 3058 if (DEBUG_INPUT_RESIZE) { 3059 Log.v(mTag, "Clearing child focus"); 3060 } 3061 checkThread(); 3062 scheduleTraversals(); 3063 } 3064 3065 @Override 3066 public ViewParent getParentForAccessibility() { 3067 return null; 3068 } 3069 3070 @Override 3071 public void focusableViewAvailable(View v) { 3072 checkThread(); 3073 if (mView != null) { 3074 if (!mView.hasFocus()) { 3075 v.requestFocus(); 3076 } else { 3077 // the one case where will transfer focus away from the current one 3078 // is if the current view is a view group that prefers to give focus 3079 // to its children first AND the view is a descendant of it. 3080 View focused = mView.findFocus(); 3081 if (focused instanceof ViewGroup) { 3082 ViewGroup group = (ViewGroup) focused; 3083 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3084 && isViewDescendantOf(v, focused)) { 3085 v.requestFocus(); 3086 } 3087 } 3088 } 3089 } 3090 } 3091 3092 @Override 3093 public void recomputeViewAttributes(View child) { 3094 checkThread(); 3095 if (mView == child) { 3096 mAttachInfo.mRecomputeGlobalAttributes = true; 3097 if (!mWillDrawSoon) { 3098 scheduleTraversals(); 3099 } 3100 } 3101 } 3102 3103 void dispatchDetachedFromWindow() { 3104 if (mView != null && mView.mAttachInfo != null) { 3105 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 3106 mView.dispatchDetachedFromWindow(); 3107 } 3108 3109 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 3110 mAccessibilityManager.removeAccessibilityStateChangeListener( 3111 mAccessibilityInteractionConnectionManager); 3112 mAccessibilityManager.removeHighTextContrastStateChangeListener( 3113 mHighContrastTextManager); 3114 removeSendWindowContentChangedCallback(); 3115 3116 destroyHardwareRenderer(); 3117 3118 setAccessibilityFocus(null, null); 3119 3120 mView.assignParent(null); 3121 mView = null; 3122 mAttachInfo.mRootView = null; 3123 3124 if (mCapturingView != null) { 3125 releasePointerCapture(mCapturingView); 3126 } 3127 3128 mSurface.release(); 3129 3130 if (mInputQueueCallback != null && mInputQueue != null) { 3131 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 3132 mInputQueue.dispose(); 3133 mInputQueueCallback = null; 3134 mInputQueue = null; 3135 } 3136 if (mInputEventReceiver != null) { 3137 mInputEventReceiver.dispose(); 3138 mInputEventReceiver = null; 3139 } 3140 try { 3141 mWindowSession.remove(mWindow); 3142 } catch (RemoteException e) { 3143 } 3144 3145 // Dispose the input channel after removing the window so the Window Manager 3146 // doesn't interpret the input channel being closed as an abnormal termination. 3147 if (mInputChannel != null) { 3148 mInputChannel.dispose(); 3149 mInputChannel = null; 3150 } 3151 3152 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3153 3154 unscheduleTraversals(); 3155 } 3156 3157 void updateConfiguration(Configuration config, boolean force) { 3158 if (DEBUG_CONFIGURATION) Log.v(mTag, 3159 "Applying new config to window " 3160 + mWindowAttributes.getTitle() 3161 + ": " + config); 3162 3163 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3164 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3165 config = new Configuration(config); 3166 ci.applyToConfiguration(mNoncompatDensity, config); 3167 } 3168 3169 synchronized (sConfigCallbacks) { 3170 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3171 sConfigCallbacks.get(i).onConfigurationChanged(config); 3172 } 3173 } 3174 if (mView != null) { 3175 // At this point the resources have been updated to 3176 // have the most recent config, whatever that is. Use 3177 // the one in them which may be newer. 3178 config = mView.getResources().getConfiguration(); 3179 if (force || mLastConfiguration.diff(config) != 0) { 3180 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3181 final int currentLayoutDirection = config.getLayoutDirection(); 3182 mLastConfiguration.setTo(config); 3183 if (lastLayoutDirection != currentLayoutDirection && 3184 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3185 mView.setLayoutDirection(currentLayoutDirection); 3186 } 3187 mView.dispatchConfigurationChanged(config); 3188 } 3189 } 3190 } 3191 3192 /** 3193 * Return true if child is an ancestor of parent, (or equal to the parent). 3194 */ 3195 public static boolean isViewDescendantOf(View child, View parent) { 3196 if (child == parent) { 3197 return true; 3198 } 3199 3200 final ViewParent theParent = child.getParent(); 3201 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3202 } 3203 3204 private static void forceLayout(View view) { 3205 view.forceLayout(); 3206 if (view instanceof ViewGroup) { 3207 ViewGroup group = (ViewGroup) view; 3208 final int count = group.getChildCount(); 3209 for (int i = 0; i < count; i++) { 3210 forceLayout(group.getChildAt(i)); 3211 } 3212 } 3213 } 3214 3215 private final static int MSG_INVALIDATE = 1; 3216 private final static int MSG_INVALIDATE_RECT = 2; 3217 private final static int MSG_DIE = 3; 3218 private final static int MSG_RESIZED = 4; 3219 private final static int MSG_RESIZED_REPORT = 5; 3220 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3221 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3222 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3223 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3224 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3225 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 3226 private final static int MSG_CHECK_FOCUS = 13; 3227 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3228 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3229 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3230 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3231 private final static int MSG_UPDATE_CONFIGURATION = 18; 3232 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3233 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3234 private final static int MSG_INVALIDATE_WORLD = 22; 3235 private final static int MSG_WINDOW_MOVED = 23; 3236 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 24; 3237 private final static int MSG_DISPATCH_WINDOW_SHOWN = 25; 3238 3239 final class ViewRootHandler extends Handler { 3240 @Override 3241 public String getMessageName(Message message) { 3242 switch (message.what) { 3243 case MSG_INVALIDATE: 3244 return "MSG_INVALIDATE"; 3245 case MSG_INVALIDATE_RECT: 3246 return "MSG_INVALIDATE_RECT"; 3247 case MSG_DIE: 3248 return "MSG_DIE"; 3249 case MSG_RESIZED: 3250 return "MSG_RESIZED"; 3251 case MSG_RESIZED_REPORT: 3252 return "MSG_RESIZED_REPORT"; 3253 case MSG_WINDOW_FOCUS_CHANGED: 3254 return "MSG_WINDOW_FOCUS_CHANGED"; 3255 case MSG_DISPATCH_INPUT_EVENT: 3256 return "MSG_DISPATCH_INPUT_EVENT"; 3257 case MSG_DISPATCH_APP_VISIBILITY: 3258 return "MSG_DISPATCH_APP_VISIBILITY"; 3259 case MSG_DISPATCH_GET_NEW_SURFACE: 3260 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3261 case MSG_DISPATCH_KEY_FROM_IME: 3262 return "MSG_DISPATCH_KEY_FROM_IME"; 3263 case MSG_FINISH_INPUT_CONNECTION: 3264 return "MSG_FINISH_INPUT_CONNECTION"; 3265 case MSG_CHECK_FOCUS: 3266 return "MSG_CHECK_FOCUS"; 3267 case MSG_CLOSE_SYSTEM_DIALOGS: 3268 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3269 case MSG_DISPATCH_DRAG_EVENT: 3270 return "MSG_DISPATCH_DRAG_EVENT"; 3271 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3272 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3273 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3274 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3275 case MSG_UPDATE_CONFIGURATION: 3276 return "MSG_UPDATE_CONFIGURATION"; 3277 case MSG_PROCESS_INPUT_EVENTS: 3278 return "MSG_PROCESS_INPUT_EVENTS"; 3279 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3280 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3281 case MSG_WINDOW_MOVED: 3282 return "MSG_WINDOW_MOVED"; 3283 case MSG_SYNTHESIZE_INPUT_EVENT: 3284 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3285 case MSG_DISPATCH_WINDOW_SHOWN: 3286 return "MSG_DISPATCH_WINDOW_SHOWN"; 3287 } 3288 return super.getMessageName(message); 3289 } 3290 3291 @Override 3292 public void handleMessage(Message msg) { 3293 switch (msg.what) { 3294 case MSG_INVALIDATE: 3295 ((View) msg.obj).invalidate(); 3296 break; 3297 case MSG_INVALIDATE_RECT: 3298 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3299 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3300 info.recycle(); 3301 break; 3302 case MSG_PROCESS_INPUT_EVENTS: 3303 mProcessInputEventsScheduled = false; 3304 doProcessInputEvents(); 3305 break; 3306 case MSG_DISPATCH_APP_VISIBILITY: 3307 handleAppVisibility(msg.arg1 != 0); 3308 break; 3309 case MSG_DISPATCH_GET_NEW_SURFACE: 3310 handleGetNewSurface(); 3311 break; 3312 case MSG_RESIZED: { 3313 // Recycled in the fall through... 3314 SomeArgs args = (SomeArgs) msg.obj; 3315 if (mWinFrame.equals(args.arg1) 3316 && mPendingOverscanInsets.equals(args.arg5) 3317 && mPendingContentInsets.equals(args.arg2) 3318 && mPendingStableInsets.equals(args.arg6) 3319 && mPendingVisibleInsets.equals(args.arg3) 3320 && mPendingOutsets.equals(args.arg7) 3321 && mPendingBackDropFrame.equals(args.arg8) 3322 && args.arg4 == null) { 3323 break; 3324 } 3325 } // fall through... 3326 case MSG_RESIZED_REPORT: 3327 if (mAdded) { 3328 SomeArgs args = (SomeArgs) msg.obj; 3329 3330 Configuration config = (Configuration) args.arg4; 3331 if (config != null) { 3332 updateConfiguration(config, false); 3333 } 3334 3335 mWinFrame.set((Rect) args.arg1); 3336 mPendingOverscanInsets.set((Rect) args.arg5); 3337 mPendingContentInsets.set((Rect) args.arg2); 3338 mPendingStableInsets.set((Rect) args.arg6); 3339 mPendingVisibleInsets.set((Rect) args.arg3); 3340 mPendingOutsets.set((Rect) args.arg7); 3341 mPendingBackDropFrame.set((Rect) args.arg8); 3342 3343 args.recycle(); 3344 3345 if (msg.what == MSG_RESIZED_REPORT) { 3346 mReportNextDraw = true; 3347 } 3348 3349 if (mView != null) { 3350 forceLayout(mView); 3351 } 3352 3353 requestLayout(); 3354 } 3355 break; 3356 case MSG_WINDOW_MOVED: 3357 if (mAdded) { 3358 final int w = mWinFrame.width(); 3359 final int h = mWinFrame.height(); 3360 final int l = msg.arg1; 3361 final int t = msg.arg2; 3362 mWinFrame.left = l; 3363 mWinFrame.right = l + w; 3364 mWinFrame.top = t; 3365 mWinFrame.bottom = t + h; 3366 3367 mPendingBackDropFrame.set(mWinFrame); 3368 3369 if (mView != null) { 3370 forceLayout(mView); 3371 } 3372 requestLayout(); 3373 } 3374 break; 3375 case MSG_WINDOW_FOCUS_CHANGED: { 3376 if (mAdded) { 3377 boolean hasWindowFocus = msg.arg1 != 0; 3378 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3379 3380 profileRendering(hasWindowFocus); 3381 3382 if (hasWindowFocus) { 3383 boolean inTouchMode = msg.arg2 != 0; 3384 ensureTouchModeLocally(inTouchMode); 3385 3386 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3387 mFullRedrawNeeded = true; 3388 try { 3389 final WindowManager.LayoutParams lp = mWindowAttributes; 3390 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3391 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3392 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 3393 } catch (OutOfResourcesException e) { 3394 Log.e(mTag, "OutOfResourcesException locking surface", e); 3395 try { 3396 if (!mWindowSession.outOfMemory(mWindow)) { 3397 Slog.w(mTag, "No processes killed for memory; killing self"); 3398 Process.killProcess(Process.myPid()); 3399 } 3400 } catch (RemoteException ex) { 3401 } 3402 // Retry in a bit. 3403 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3404 return; 3405 } 3406 } 3407 } 3408 3409 mLastWasImTarget = WindowManager.LayoutParams 3410 .mayUseInputMethod(mWindowAttributes.flags); 3411 3412 InputMethodManager imm = InputMethodManager.peekInstance(); 3413 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3414 imm.onPreWindowFocus(mView, hasWindowFocus); 3415 } 3416 if (mView != null) { 3417 mAttachInfo.mKeyDispatchState.reset(); 3418 mView.dispatchWindowFocusChanged(hasWindowFocus); 3419 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3420 } 3421 3422 // Note: must be done after the focus change callbacks, 3423 // so all of the view state is set up correctly. 3424 if (hasWindowFocus) { 3425 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3426 imm.onPostWindowFocus(mView, mView.findFocus(), 3427 mWindowAttributes.softInputMode, 3428 !mHasHadWindowFocus, mWindowAttributes.flags); 3429 } 3430 // Clear the forward bit. We can just do this directly, since 3431 // the window manager doesn't care about it. 3432 mWindowAttributes.softInputMode &= 3433 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3434 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3435 .softInputMode &= 3436 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3437 mHasHadWindowFocus = true; 3438 } else if (mCapturingView != null) { 3439 releasePointerCapture(mCapturingView); 3440 } 3441 } 3442 } break; 3443 case MSG_DIE: 3444 doDie(); 3445 break; 3446 case MSG_DISPATCH_INPUT_EVENT: { 3447 SomeArgs args = (SomeArgs)msg.obj; 3448 InputEvent event = (InputEvent)args.arg1; 3449 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3450 enqueueInputEvent(event, receiver, 0, true); 3451 args.recycle(); 3452 } break; 3453 case MSG_SYNTHESIZE_INPUT_EVENT: { 3454 InputEvent event = (InputEvent)msg.obj; 3455 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3456 } break; 3457 case MSG_DISPATCH_KEY_FROM_IME: { 3458 if (LOCAL_LOGV) Log.v( 3459 TAG, "Dispatching key " 3460 + msg.obj + " from IME to " + mView); 3461 KeyEvent event = (KeyEvent)msg.obj; 3462 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3463 // The IME is trying to say this event is from the 3464 // system! Bad bad bad! 3465 //noinspection UnusedAssignment 3466 event = KeyEvent.changeFlags(event, event.getFlags() & 3467 ~KeyEvent.FLAG_FROM_SYSTEM); 3468 } 3469 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3470 } break; 3471 case MSG_FINISH_INPUT_CONNECTION: { 3472 InputMethodManager imm = InputMethodManager.peekInstance(); 3473 if (imm != null) { 3474 imm.reportFinishInputConnection((InputConnection)msg.obj); 3475 } 3476 } break; 3477 case MSG_CHECK_FOCUS: { 3478 InputMethodManager imm = InputMethodManager.peekInstance(); 3479 if (imm != null) { 3480 imm.checkFocus(); 3481 } 3482 } break; 3483 case MSG_CLOSE_SYSTEM_DIALOGS: { 3484 if (mView != null) { 3485 mView.onCloseSystemDialogs((String)msg.obj); 3486 } 3487 } break; 3488 case MSG_DISPATCH_DRAG_EVENT: 3489 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3490 DragEvent event = (DragEvent)msg.obj; 3491 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3492 handleDragEvent(event); 3493 } break; 3494 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3495 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3496 } break; 3497 case MSG_UPDATE_CONFIGURATION: { 3498 Configuration config = (Configuration)msg.obj; 3499 if (config.isOtherSeqNewer(mLastConfiguration)) { 3500 config = mLastConfiguration; 3501 } 3502 updateConfiguration(config, false); 3503 } break; 3504 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3505 setAccessibilityFocus(null, null); 3506 } break; 3507 case MSG_INVALIDATE_WORLD: { 3508 if (mView != null) { 3509 invalidateWorld(mView); 3510 } 3511 } break; 3512 case MSG_DISPATCH_WINDOW_SHOWN: { 3513 handleDispatchWindowShown(); 3514 } 3515 } 3516 } 3517 } 3518 3519 final ViewRootHandler mHandler = new ViewRootHandler(); 3520 3521 /** 3522 * Something in the current window tells us we need to change the touch mode. For 3523 * example, we are not in touch mode, and the user touches the screen. 3524 * 3525 * If the touch mode has changed, tell the window manager, and handle it locally. 3526 * 3527 * @param inTouchMode Whether we want to be in touch mode. 3528 * @return True if the touch mode changed and focus changed was changed as a result 3529 */ 3530 boolean ensureTouchMode(boolean inTouchMode) { 3531 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3532 + "touch mode is " + mAttachInfo.mInTouchMode); 3533 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3534 3535 // tell the window manager 3536 try { 3537 mWindowSession.setInTouchMode(inTouchMode); 3538 } catch (RemoteException e) { 3539 throw new RuntimeException(e); 3540 } 3541 3542 // handle the change 3543 return ensureTouchModeLocally(inTouchMode); 3544 } 3545 3546 /** 3547 * Ensure that the touch mode for this window is set, and if it is changing, 3548 * take the appropriate action. 3549 * @param inTouchMode Whether we want to be in touch mode. 3550 * @return True if the touch mode changed and focus changed was changed as a result 3551 */ 3552 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3553 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3554 + "touch mode is " + mAttachInfo.mInTouchMode); 3555 3556 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3557 3558 mAttachInfo.mInTouchMode = inTouchMode; 3559 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3560 3561 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3562 } 3563 3564 private boolean enterTouchMode() { 3565 if (mView != null && mView.hasFocus()) { 3566 // note: not relying on mFocusedView here because this could 3567 // be when the window is first being added, and mFocused isn't 3568 // set yet. 3569 final View focused = mView.findFocus(); 3570 if (focused != null && !focused.isFocusableInTouchMode()) { 3571 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3572 if (ancestorToTakeFocus != null) { 3573 // there is an ancestor that wants focus after its 3574 // descendants that is focusable in touch mode.. give it 3575 // focus 3576 return ancestorToTakeFocus.requestFocus(); 3577 } else { 3578 // There's nothing to focus. Clear and propagate through the 3579 // hierarchy, but don't attempt to place new focus. 3580 focused.clearFocusInternal(null, true, false); 3581 return true; 3582 } 3583 } 3584 } 3585 return false; 3586 } 3587 3588 /** 3589 * Find an ancestor of focused that wants focus after its descendants and is 3590 * focusable in touch mode. 3591 * @param focused The currently focused view. 3592 * @return An appropriate view, or null if no such view exists. 3593 */ 3594 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3595 ViewParent parent = focused.getParent(); 3596 while (parent instanceof ViewGroup) { 3597 final ViewGroup vgParent = (ViewGroup) parent; 3598 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3599 && vgParent.isFocusableInTouchMode()) { 3600 return vgParent; 3601 } 3602 if (vgParent.isRootNamespace()) { 3603 return null; 3604 } else { 3605 parent = vgParent.getParent(); 3606 } 3607 } 3608 return null; 3609 } 3610 3611 private boolean leaveTouchMode() { 3612 if (mView != null) { 3613 if (mView.hasFocus()) { 3614 View focusedView = mView.findFocus(); 3615 if (!(focusedView instanceof ViewGroup)) { 3616 // some view has focus, let it keep it 3617 return false; 3618 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3619 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3620 // some view group has focus, and doesn't prefer its children 3621 // over itself for focus, so let them keep it. 3622 return false; 3623 } 3624 } 3625 3626 // find the best view to give focus to in this brave new non-touch-mode 3627 // world 3628 final View focused = focusSearch(null, View.FOCUS_DOWN); 3629 if (focused != null) { 3630 return focused.requestFocus(View.FOCUS_DOWN); 3631 } 3632 } 3633 return false; 3634 } 3635 3636 /** 3637 * Base class for implementing a stage in the chain of responsibility 3638 * for processing input events. 3639 * <p> 3640 * Events are delivered to the stage by the {@link #deliver} method. The stage 3641 * then has the choice of finishing the event or forwarding it to the next stage. 3642 * </p> 3643 */ 3644 abstract class InputStage { 3645 private final InputStage mNext; 3646 3647 protected static final int FORWARD = 0; 3648 protected static final int FINISH_HANDLED = 1; 3649 protected static final int FINISH_NOT_HANDLED = 2; 3650 3651 /** 3652 * Creates an input stage. 3653 * @param next The next stage to which events should be forwarded. 3654 */ 3655 public InputStage(InputStage next) { 3656 mNext = next; 3657 } 3658 3659 /** 3660 * Delivers an event to be processed. 3661 */ 3662 public final void deliver(QueuedInputEvent q) { 3663 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3664 forward(q); 3665 } else if (shouldDropInputEvent(q)) { 3666 finish(q, false); 3667 } else { 3668 apply(q, onProcess(q)); 3669 } 3670 } 3671 3672 /** 3673 * Marks the the input event as finished then forwards it to the next stage. 3674 */ 3675 protected void finish(QueuedInputEvent q, boolean handled) { 3676 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3677 if (handled) { 3678 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3679 } 3680 forward(q); 3681 } 3682 3683 /** 3684 * Forwards the event to the next stage. 3685 */ 3686 protected void forward(QueuedInputEvent q) { 3687 onDeliverToNext(q); 3688 } 3689 3690 /** 3691 * Applies a result code from {@link #onProcess} to the specified event. 3692 */ 3693 protected void apply(QueuedInputEvent q, int result) { 3694 if (result == FORWARD) { 3695 forward(q); 3696 } else if (result == FINISH_HANDLED) { 3697 finish(q, true); 3698 } else if (result == FINISH_NOT_HANDLED) { 3699 finish(q, false); 3700 } else { 3701 throw new IllegalArgumentException("Invalid result: " + result); 3702 } 3703 } 3704 3705 /** 3706 * Called when an event is ready to be processed. 3707 * @return A result code indicating how the event was handled. 3708 */ 3709 protected int onProcess(QueuedInputEvent q) { 3710 return FORWARD; 3711 } 3712 3713 /** 3714 * Called when an event is being delivered to the next stage. 3715 */ 3716 protected void onDeliverToNext(QueuedInputEvent q) { 3717 if (DEBUG_INPUT_STAGES) { 3718 Log.v(mTag, "Done with " + getClass().getSimpleName() + ". " + q); 3719 } 3720 if (mNext != null) { 3721 mNext.deliver(q); 3722 } else { 3723 finishInputEvent(q); 3724 } 3725 } 3726 3727 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3728 if (mView == null || !mAdded) { 3729 Slog.w(mTag, "Dropping event due to root view being removed: " + q.mEvent); 3730 return true; 3731 } else if ((!mAttachInfo.mHasWindowFocus 3732 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) || mStopped 3733 || mIsAmbientMode || (mPausedForTransition && !isBack(q.mEvent))) { 3734 // This is a focus event and the window doesn't currently have input focus or 3735 // has stopped. This could be an event that came back from the previous stage 3736 // but the window has lost focus or stopped in the meantime. 3737 if (isTerminalInputEvent(q.mEvent)) { 3738 // Don't drop terminal input events, however mark them as canceled. 3739 q.mEvent.cancel(); 3740 Slog.w(mTag, "Cancelling event due to no window focus: " + q.mEvent); 3741 return false; 3742 } 3743 3744 // Drop non-terminal input events. 3745 Slog.w(mTag, "Dropping event due to no window focus: " + q.mEvent); 3746 return true; 3747 } 3748 return false; 3749 } 3750 3751 void dump(String prefix, PrintWriter writer) { 3752 if (mNext != null) { 3753 mNext.dump(prefix, writer); 3754 } 3755 } 3756 3757 private boolean isBack(InputEvent event) { 3758 if (event instanceof KeyEvent) { 3759 return ((KeyEvent) event).getKeyCode() == KeyEvent.KEYCODE_BACK; 3760 } else { 3761 return false; 3762 } 3763 } 3764 } 3765 3766 /** 3767 * Base class for implementing an input pipeline stage that supports 3768 * asynchronous and out-of-order processing of input events. 3769 * <p> 3770 * In addition to what a normal input stage can do, an asynchronous 3771 * input stage may also defer an input event that has been delivered to it 3772 * and finish or forward it later. 3773 * </p> 3774 */ 3775 abstract class AsyncInputStage extends InputStage { 3776 private final String mTraceCounter; 3777 3778 private QueuedInputEvent mQueueHead; 3779 private QueuedInputEvent mQueueTail; 3780 private int mQueueLength; 3781 3782 protected static final int DEFER = 3; 3783 3784 /** 3785 * Creates an asynchronous input stage. 3786 * @param next The next stage to which events should be forwarded. 3787 * @param traceCounter The name of a counter to record the size of 3788 * the queue of pending events. 3789 */ 3790 public AsyncInputStage(InputStage next, String traceCounter) { 3791 super(next); 3792 mTraceCounter = traceCounter; 3793 } 3794 3795 /** 3796 * Marks the event as deferred, which is to say that it will be handled 3797 * asynchronously. The caller is responsible for calling {@link #forward} 3798 * or {@link #finish} later when it is done handling the event. 3799 */ 3800 protected void defer(QueuedInputEvent q) { 3801 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3802 enqueue(q); 3803 } 3804 3805 @Override 3806 protected void forward(QueuedInputEvent q) { 3807 // Clear the deferred flag. 3808 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3809 3810 // Fast path if the queue is empty. 3811 QueuedInputEvent curr = mQueueHead; 3812 if (curr == null) { 3813 super.forward(q); 3814 return; 3815 } 3816 3817 // Determine whether the event must be serialized behind any others 3818 // before it can be delivered to the next stage. This is done because 3819 // deferred events might be handled out of order by the stage. 3820 final int deviceId = q.mEvent.getDeviceId(); 3821 QueuedInputEvent prev = null; 3822 boolean blocked = false; 3823 while (curr != null && curr != q) { 3824 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3825 blocked = true; 3826 } 3827 prev = curr; 3828 curr = curr.mNext; 3829 } 3830 3831 // If the event is blocked, then leave it in the queue to be delivered later. 3832 // Note that the event might not yet be in the queue if it was not previously 3833 // deferred so we will enqueue it if needed. 3834 if (blocked) { 3835 if (curr == null) { 3836 enqueue(q); 3837 } 3838 return; 3839 } 3840 3841 // The event is not blocked. Deliver it immediately. 3842 if (curr != null) { 3843 curr = curr.mNext; 3844 dequeue(q, prev); 3845 } 3846 super.forward(q); 3847 3848 // Dequeuing this event may have unblocked successors. Deliver them. 3849 while (curr != null) { 3850 if (deviceId == curr.mEvent.getDeviceId()) { 3851 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3852 break; 3853 } 3854 QueuedInputEvent next = curr.mNext; 3855 dequeue(curr, prev); 3856 super.forward(curr); 3857 curr = next; 3858 } else { 3859 prev = curr; 3860 curr = curr.mNext; 3861 } 3862 } 3863 } 3864 3865 @Override 3866 protected void apply(QueuedInputEvent q, int result) { 3867 if (result == DEFER) { 3868 defer(q); 3869 } else { 3870 super.apply(q, result); 3871 } 3872 } 3873 3874 private void enqueue(QueuedInputEvent q) { 3875 if (mQueueTail == null) { 3876 mQueueHead = q; 3877 mQueueTail = q; 3878 } else { 3879 mQueueTail.mNext = q; 3880 mQueueTail = q; 3881 } 3882 3883 mQueueLength += 1; 3884 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3885 } 3886 3887 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3888 if (prev == null) { 3889 mQueueHead = q.mNext; 3890 } else { 3891 prev.mNext = q.mNext; 3892 } 3893 if (mQueueTail == q) { 3894 mQueueTail = prev; 3895 } 3896 q.mNext = null; 3897 3898 mQueueLength -= 1; 3899 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3900 } 3901 3902 @Override 3903 void dump(String prefix, PrintWriter writer) { 3904 writer.print(prefix); 3905 writer.print(getClass().getName()); 3906 writer.print(": mQueueLength="); 3907 writer.println(mQueueLength); 3908 3909 super.dump(prefix, writer); 3910 } 3911 } 3912 3913 /** 3914 * Delivers pre-ime input events to a native activity. 3915 * Does not support pointer events. 3916 */ 3917 final class NativePreImeInputStage extends AsyncInputStage 3918 implements InputQueue.FinishedInputEventCallback { 3919 public NativePreImeInputStage(InputStage next, String traceCounter) { 3920 super(next, traceCounter); 3921 } 3922 3923 @Override 3924 protected int onProcess(QueuedInputEvent q) { 3925 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3926 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3927 return DEFER; 3928 } 3929 return FORWARD; 3930 } 3931 3932 @Override 3933 public void onFinishedInputEvent(Object token, boolean handled) { 3934 QueuedInputEvent q = (QueuedInputEvent)token; 3935 if (handled) { 3936 finish(q, true); 3937 return; 3938 } 3939 forward(q); 3940 } 3941 } 3942 3943 /** 3944 * Delivers pre-ime input events to the view hierarchy. 3945 * Does not support pointer events. 3946 */ 3947 final class ViewPreImeInputStage extends InputStage { 3948 public ViewPreImeInputStage(InputStage next) { 3949 super(next); 3950 } 3951 3952 @Override 3953 protected int onProcess(QueuedInputEvent q) { 3954 if (q.mEvent instanceof KeyEvent) { 3955 return processKeyEvent(q); 3956 } 3957 return FORWARD; 3958 } 3959 3960 private int processKeyEvent(QueuedInputEvent q) { 3961 final KeyEvent event = (KeyEvent)q.mEvent; 3962 if (mView.dispatchKeyEventPreIme(event)) { 3963 return FINISH_HANDLED; 3964 } 3965 return FORWARD; 3966 } 3967 } 3968 3969 /** 3970 * Delivers input events to the ime. 3971 * Does not support pointer events. 3972 */ 3973 final class ImeInputStage extends AsyncInputStage 3974 implements InputMethodManager.FinishedInputEventCallback { 3975 public ImeInputStage(InputStage next, String traceCounter) { 3976 super(next, traceCounter); 3977 } 3978 3979 @Override 3980 protected int onProcess(QueuedInputEvent q) { 3981 if (mLastWasImTarget && !isInLocalFocusMode()) { 3982 InputMethodManager imm = InputMethodManager.peekInstance(); 3983 if (imm != null) { 3984 final InputEvent event = q.mEvent; 3985 if (DEBUG_IMF) Log.v(mTag, "Sending input event to IME: " + event); 3986 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3987 if (result == InputMethodManager.DISPATCH_HANDLED) { 3988 return FINISH_HANDLED; 3989 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3990 // The IME could not handle it, so skip along to the next InputStage 3991 return FORWARD; 3992 } else { 3993 return DEFER; // callback will be invoked later 3994 } 3995 } 3996 } 3997 return FORWARD; 3998 } 3999 4000 @Override 4001 public void onFinishedInputEvent(Object token, boolean handled) { 4002 QueuedInputEvent q = (QueuedInputEvent)token; 4003 if (handled) { 4004 finish(q, true); 4005 return; 4006 } 4007 forward(q); 4008 } 4009 } 4010 4011 /** 4012 * Performs early processing of post-ime input events. 4013 */ 4014 final class EarlyPostImeInputStage extends InputStage { 4015 public EarlyPostImeInputStage(InputStage next) { 4016 super(next); 4017 } 4018 4019 @Override 4020 protected int onProcess(QueuedInputEvent q) { 4021 if (q.mEvent instanceof KeyEvent) { 4022 return processKeyEvent(q); 4023 } else { 4024 final int source = q.mEvent.getSource(); 4025 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4026 return processPointerEvent(q); 4027 } 4028 } 4029 return FORWARD; 4030 } 4031 4032 private int processKeyEvent(QueuedInputEvent q) { 4033 final KeyEvent event = (KeyEvent)q.mEvent; 4034 4035 // If the key's purpose is to exit touch mode then we consume it 4036 // and consider it handled. 4037 if (checkForLeavingTouchModeAndConsume(event)) { 4038 return FINISH_HANDLED; 4039 } 4040 4041 // Make sure the fallback event policy sees all keys that will be 4042 // delivered to the view hierarchy. 4043 mFallbackEventHandler.preDispatchKeyEvent(event); 4044 return FORWARD; 4045 } 4046 4047 private int processPointerEvent(QueuedInputEvent q) { 4048 final MotionEvent event = (MotionEvent)q.mEvent; 4049 4050 // Translate the pointer event for compatibility, if needed. 4051 if (mTranslator != null) { 4052 mTranslator.translateEventInScreenToAppWindow(event); 4053 } 4054 4055 // Enter touch mode on down or scroll. 4056 final int action = event.getAction(); 4057 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 4058 ensureTouchMode(true); 4059 } 4060 4061 // Offset the scroll position. 4062 if (mCurScrollY != 0) { 4063 event.offsetLocation(0, mCurScrollY); 4064 } 4065 4066 // Remember the touch position for possible drag-initiation. 4067 if (event.isTouchEvent()) { 4068 mLastTouchPoint.x = event.getRawX(); 4069 mLastTouchPoint.y = event.getRawY(); 4070 } 4071 return FORWARD; 4072 } 4073 } 4074 4075 /** 4076 * Delivers post-ime input events to a native activity. 4077 */ 4078 final class NativePostImeInputStage extends AsyncInputStage 4079 implements InputQueue.FinishedInputEventCallback { 4080 public NativePostImeInputStage(InputStage next, String traceCounter) { 4081 super(next, traceCounter); 4082 } 4083 4084 @Override 4085 protected int onProcess(QueuedInputEvent q) { 4086 if (mInputQueue != null) { 4087 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 4088 return DEFER; 4089 } 4090 return FORWARD; 4091 } 4092 4093 @Override 4094 public void onFinishedInputEvent(Object token, boolean handled) { 4095 QueuedInputEvent q = (QueuedInputEvent)token; 4096 if (handled) { 4097 finish(q, true); 4098 return; 4099 } 4100 forward(q); 4101 } 4102 } 4103 4104 /** 4105 * Delivers post-ime input events to the view hierarchy. 4106 */ 4107 final class ViewPostImeInputStage extends InputStage { 4108 public ViewPostImeInputStage(InputStage next) { 4109 super(next); 4110 } 4111 4112 @Override 4113 protected int onProcess(QueuedInputEvent q) { 4114 if (q.mEvent instanceof KeyEvent) { 4115 return processKeyEvent(q); 4116 } else { 4117 final int source = q.mEvent.getSource(); 4118 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4119 return processPointerEvent(q); 4120 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4121 return processTrackballEvent(q); 4122 } else { 4123 return processGenericMotionEvent(q); 4124 } 4125 } 4126 } 4127 4128 @Override 4129 protected void onDeliverToNext(QueuedInputEvent q) { 4130 if (mUnbufferedInputDispatch 4131 && q.mEvent instanceof MotionEvent 4132 && ((MotionEvent)q.mEvent).isTouchEvent() 4133 && isTerminalInputEvent(q.mEvent)) { 4134 mUnbufferedInputDispatch = false; 4135 scheduleConsumeBatchedInput(); 4136 } 4137 super.onDeliverToNext(q); 4138 } 4139 4140 private int processKeyEvent(QueuedInputEvent q) { 4141 final KeyEvent event = (KeyEvent)q.mEvent; 4142 4143 // Deliver the key to the view hierarchy. 4144 if (mView.dispatchKeyEvent(event)) { 4145 return FINISH_HANDLED; 4146 } 4147 4148 if (shouldDropInputEvent(q)) { 4149 return FINISH_NOT_HANDLED; 4150 } 4151 4152 // If the Control modifier is held, try to interpret the key as a shortcut. 4153 if (event.getAction() == KeyEvent.ACTION_DOWN 4154 && event.isCtrlPressed() 4155 && event.getRepeatCount() == 0 4156 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4157 if (mView.dispatchKeyShortcutEvent(event)) { 4158 return FINISH_HANDLED; 4159 } 4160 if (shouldDropInputEvent(q)) { 4161 return FINISH_NOT_HANDLED; 4162 } 4163 } 4164 4165 // Apply the fallback event policy. 4166 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4167 return FINISH_HANDLED; 4168 } 4169 if (shouldDropInputEvent(q)) { 4170 return FINISH_NOT_HANDLED; 4171 } 4172 4173 // Handle automatic focus changes. 4174 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4175 int direction = 0; 4176 switch (event.getKeyCode()) { 4177 case KeyEvent.KEYCODE_DPAD_LEFT: 4178 if (event.hasNoModifiers()) { 4179 direction = View.FOCUS_LEFT; 4180 } 4181 break; 4182 case KeyEvent.KEYCODE_DPAD_RIGHT: 4183 if (event.hasNoModifiers()) { 4184 direction = View.FOCUS_RIGHT; 4185 } 4186 break; 4187 case KeyEvent.KEYCODE_DPAD_UP: 4188 if (event.hasNoModifiers()) { 4189 direction = View.FOCUS_UP; 4190 } 4191 break; 4192 case KeyEvent.KEYCODE_DPAD_DOWN: 4193 if (event.hasNoModifiers()) { 4194 direction = View.FOCUS_DOWN; 4195 } 4196 break; 4197 case KeyEvent.KEYCODE_TAB: 4198 if (event.hasNoModifiers()) { 4199 direction = View.FOCUS_FORWARD; 4200 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4201 direction = View.FOCUS_BACKWARD; 4202 } 4203 break; 4204 } 4205 if (direction != 0) { 4206 View focused = mView.findFocus(); 4207 if (focused != null) { 4208 View v = focused.focusSearch(direction); 4209 if (v != null && v != focused) { 4210 // do the math the get the interesting rect 4211 // of previous focused into the coord system of 4212 // newly focused view 4213 focused.getFocusedRect(mTempRect); 4214 if (mView instanceof ViewGroup) { 4215 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4216 focused, mTempRect); 4217 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4218 v, mTempRect); 4219 } 4220 if (v.requestFocus(direction, mTempRect)) { 4221 playSoundEffect(SoundEffectConstants 4222 .getContantForFocusDirection(direction)); 4223 return FINISH_HANDLED; 4224 } 4225 } 4226 4227 // Give the focused view a last chance to handle the dpad key. 4228 if (mView.dispatchUnhandledMove(focused, direction)) { 4229 return FINISH_HANDLED; 4230 } 4231 } else { 4232 // find the best view to give focus to in this non-touch-mode with no-focus 4233 View v = focusSearch(null, direction); 4234 if (v != null && v.requestFocus(direction)) { 4235 return FINISH_HANDLED; 4236 } 4237 } 4238 } 4239 } 4240 return FORWARD; 4241 } 4242 4243 private int processPointerEvent(QueuedInputEvent q) { 4244 final MotionEvent event = (MotionEvent)q.mEvent; 4245 4246 if (event.getPointerCount() == 1 4247 && event.isFromSource(InputDevice.SOURCE_MOUSE)) { 4248 if (event.getActionMasked() == MotionEvent.ACTION_HOVER_ENTER 4249 || event.getActionMasked() == MotionEvent.ACTION_HOVER_EXIT) { 4250 // Other apps or the window manager may change the icon shape outside of 4251 // this app, therefore the icon shape has to be reset on enter/exit event. 4252 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4253 } 4254 4255 final float x = event.getX(); 4256 final float y = event.getY(); 4257 if (event.getActionMasked() != MotionEvent.ACTION_HOVER_EXIT 4258 && x >= 0 && x < mView.getWidth() && y >= 0 && y < mView.getHeight()) { 4259 PointerIcon pointerIcon = mView.getPointerIcon(event, x, y); 4260 int pointerShape = (pointerIcon != null) ? 4261 pointerIcon.getStyle() : PointerIcon.STYLE_DEFAULT; 4262 4263 final InputDevice inputDevice = event.getDevice(); 4264 if (inputDevice != null) { 4265 if (mPointerIconShape != pointerShape) { 4266 mPointerIconShape = pointerShape; 4267 if (mPointerIconShape != PointerIcon.STYLE_CUSTOM) { 4268 mCustomPointerIcon = null; 4269 inputDevice.setPointerShape(pointerShape); 4270 } 4271 } 4272 if (mPointerIconShape == PointerIcon.STYLE_CUSTOM && 4273 !pointerIcon.equals(mCustomPointerIcon)) { 4274 mCustomPointerIcon = pointerIcon; 4275 inputDevice.setCustomPointerIcon(mCustomPointerIcon); 4276 } 4277 } 4278 } else if (event.getActionMasked() == MotionEvent.ACTION_HOVER_MOVE) { 4279 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4280 } 4281 } 4282 4283 mAttachInfo.mUnbufferedDispatchRequested = false; 4284 final View eventTarget = 4285 (event.isFromSource(InputDevice.SOURCE_MOUSE) && mCapturingView != null) ? 4286 mCapturingView : mView; 4287 boolean handled = eventTarget.dispatchPointerEvent(event); 4288 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4289 mUnbufferedInputDispatch = true; 4290 if (mConsumeBatchedInputScheduled) { 4291 scheduleConsumeBatchedInputImmediately(); 4292 } 4293 } 4294 return handled ? FINISH_HANDLED : FORWARD; 4295 } 4296 4297 private int processTrackballEvent(QueuedInputEvent q) { 4298 final MotionEvent event = (MotionEvent)q.mEvent; 4299 4300 if (mView.dispatchTrackballEvent(event)) { 4301 return FINISH_HANDLED; 4302 } 4303 return FORWARD; 4304 } 4305 4306 private int processGenericMotionEvent(QueuedInputEvent q) { 4307 final MotionEvent event = (MotionEvent)q.mEvent; 4308 4309 // Deliver the event to the view. 4310 if (mView.dispatchGenericMotionEvent(event)) { 4311 return FINISH_HANDLED; 4312 } 4313 return FORWARD; 4314 } 4315 } 4316 4317 /** 4318 * Performs synthesis of new input events from unhandled input events. 4319 */ 4320 final class SyntheticInputStage extends InputStage { 4321 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4322 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4323 private final SyntheticTouchNavigationHandler mTouchNavigation = 4324 new SyntheticTouchNavigationHandler(); 4325 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4326 4327 public SyntheticInputStage() { 4328 super(null); 4329 } 4330 4331 @Override 4332 protected int onProcess(QueuedInputEvent q) { 4333 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4334 if (q.mEvent instanceof MotionEvent) { 4335 final MotionEvent event = (MotionEvent)q.mEvent; 4336 final int source = event.getSource(); 4337 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4338 mTrackball.process(event); 4339 return FINISH_HANDLED; 4340 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4341 mJoystick.process(event); 4342 return FINISH_HANDLED; 4343 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4344 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4345 mTouchNavigation.process(event); 4346 return FINISH_HANDLED; 4347 } 4348 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4349 mKeyboard.process((KeyEvent)q.mEvent); 4350 return FINISH_HANDLED; 4351 } 4352 4353 return FORWARD; 4354 } 4355 4356 @Override 4357 protected void onDeliverToNext(QueuedInputEvent q) { 4358 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4359 // Cancel related synthetic events if any prior stage has handled the event. 4360 if (q.mEvent instanceof MotionEvent) { 4361 final MotionEvent event = (MotionEvent)q.mEvent; 4362 final int source = event.getSource(); 4363 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4364 mTrackball.cancel(event); 4365 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4366 mJoystick.cancel(event); 4367 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4368 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4369 mTouchNavigation.cancel(event); 4370 } 4371 } 4372 } 4373 super.onDeliverToNext(q); 4374 } 4375 } 4376 4377 /** 4378 * Creates dpad events from unhandled trackball movements. 4379 */ 4380 final class SyntheticTrackballHandler { 4381 private final TrackballAxis mX = new TrackballAxis(); 4382 private final TrackballAxis mY = new TrackballAxis(); 4383 private long mLastTime; 4384 4385 public void process(MotionEvent event) { 4386 // Translate the trackball event into DPAD keys and try to deliver those. 4387 long curTime = SystemClock.uptimeMillis(); 4388 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4389 // It has been too long since the last movement, 4390 // so restart at the beginning. 4391 mX.reset(0); 4392 mY.reset(0); 4393 mLastTime = curTime; 4394 } 4395 4396 final int action = event.getAction(); 4397 final int metaState = event.getMetaState(); 4398 switch (action) { 4399 case MotionEvent.ACTION_DOWN: 4400 mX.reset(2); 4401 mY.reset(2); 4402 enqueueInputEvent(new KeyEvent(curTime, curTime, 4403 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4404 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4405 InputDevice.SOURCE_KEYBOARD)); 4406 break; 4407 case MotionEvent.ACTION_UP: 4408 mX.reset(2); 4409 mY.reset(2); 4410 enqueueInputEvent(new KeyEvent(curTime, curTime, 4411 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4412 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4413 InputDevice.SOURCE_KEYBOARD)); 4414 break; 4415 } 4416 4417 if (DEBUG_TRACKBALL) Log.v(mTag, "TB X=" + mX.position + " step=" 4418 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4419 + " move=" + event.getX() 4420 + " / Y=" + mY.position + " step=" 4421 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4422 + " move=" + event.getY()); 4423 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4424 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4425 4426 // Generate DPAD events based on the trackball movement. 4427 // We pick the axis that has moved the most as the direction of 4428 // the DPAD. When we generate DPAD events for one axis, then the 4429 // other axis is reset -- we don't want to perform DPAD jumps due 4430 // to slight movements in the trackball when making major movements 4431 // along the other axis. 4432 int keycode = 0; 4433 int movement = 0; 4434 float accel = 1; 4435 if (xOff > yOff) { 4436 movement = mX.generate(); 4437 if (movement != 0) { 4438 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4439 : KeyEvent.KEYCODE_DPAD_LEFT; 4440 accel = mX.acceleration; 4441 mY.reset(2); 4442 } 4443 } else if (yOff > 0) { 4444 movement = mY.generate(); 4445 if (movement != 0) { 4446 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4447 : KeyEvent.KEYCODE_DPAD_UP; 4448 accel = mY.acceleration; 4449 mX.reset(2); 4450 } 4451 } 4452 4453 if (keycode != 0) { 4454 if (movement < 0) movement = -movement; 4455 int accelMovement = (int)(movement * accel); 4456 if (DEBUG_TRACKBALL) Log.v(mTag, "Move: movement=" + movement 4457 + " accelMovement=" + accelMovement 4458 + " accel=" + accel); 4459 if (accelMovement > movement) { 4460 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4461 + keycode); 4462 movement--; 4463 int repeatCount = accelMovement - movement; 4464 enqueueInputEvent(new KeyEvent(curTime, curTime, 4465 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4466 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4467 InputDevice.SOURCE_KEYBOARD)); 4468 } 4469 while (movement > 0) { 4470 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4471 + keycode); 4472 movement--; 4473 curTime = SystemClock.uptimeMillis(); 4474 enqueueInputEvent(new KeyEvent(curTime, curTime, 4475 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4476 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4477 InputDevice.SOURCE_KEYBOARD)); 4478 enqueueInputEvent(new KeyEvent(curTime, curTime, 4479 KeyEvent.ACTION_UP, keycode, 0, metaState, 4480 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4481 InputDevice.SOURCE_KEYBOARD)); 4482 } 4483 mLastTime = curTime; 4484 } 4485 } 4486 4487 public void cancel(MotionEvent event) { 4488 mLastTime = Integer.MIN_VALUE; 4489 4490 // If we reach this, we consumed a trackball event. 4491 // Because we will not translate the trackball event into a key event, 4492 // touch mode will not exit, so we exit touch mode here. 4493 if (mView != null && mAdded) { 4494 ensureTouchMode(false); 4495 } 4496 } 4497 } 4498 4499 /** 4500 * Maintains state information for a single trackball axis, generating 4501 * discrete (DPAD) movements based on raw trackball motion. 4502 */ 4503 static final class TrackballAxis { 4504 /** 4505 * The maximum amount of acceleration we will apply. 4506 */ 4507 static final float MAX_ACCELERATION = 20; 4508 4509 /** 4510 * The maximum amount of time (in milliseconds) between events in order 4511 * for us to consider the user to be doing fast trackball movements, 4512 * and thus apply an acceleration. 4513 */ 4514 static final long FAST_MOVE_TIME = 150; 4515 4516 /** 4517 * Scaling factor to the time (in milliseconds) between events to how 4518 * much to multiple/divide the current acceleration. When movement 4519 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4520 * FAST_MOVE_TIME it divides it. 4521 */ 4522 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4523 4524 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4525 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4526 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4527 4528 float position; 4529 float acceleration = 1; 4530 long lastMoveTime = 0; 4531 int step; 4532 int dir; 4533 int nonAccelMovement; 4534 4535 void reset(int _step) { 4536 position = 0; 4537 acceleration = 1; 4538 lastMoveTime = 0; 4539 step = _step; 4540 dir = 0; 4541 } 4542 4543 /** 4544 * Add trackball movement into the state. If the direction of movement 4545 * has been reversed, the state is reset before adding the 4546 * movement (so that you don't have to compensate for any previously 4547 * collected movement before see the result of the movement in the 4548 * new direction). 4549 * 4550 * @return Returns the absolute value of the amount of movement 4551 * collected so far. 4552 */ 4553 float collect(float off, long time, String axis) { 4554 long normTime; 4555 if (off > 0) { 4556 normTime = (long)(off * FAST_MOVE_TIME); 4557 if (dir < 0) { 4558 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4559 position = 0; 4560 step = 0; 4561 acceleration = 1; 4562 lastMoveTime = 0; 4563 } 4564 dir = 1; 4565 } else if (off < 0) { 4566 normTime = (long)((-off) * FAST_MOVE_TIME); 4567 if (dir > 0) { 4568 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4569 position = 0; 4570 step = 0; 4571 acceleration = 1; 4572 lastMoveTime = 0; 4573 } 4574 dir = -1; 4575 } else { 4576 normTime = 0; 4577 } 4578 4579 // The number of milliseconds between each movement that is 4580 // considered "normal" and will not result in any acceleration 4581 // or deceleration, scaled by the offset we have here. 4582 if (normTime > 0) { 4583 long delta = time - lastMoveTime; 4584 lastMoveTime = time; 4585 float acc = acceleration; 4586 if (delta < normTime) { 4587 // The user is scrolling rapidly, so increase acceleration. 4588 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4589 if (scale > 1) acc *= scale; 4590 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4591 + off + " normTime=" + normTime + " delta=" + delta 4592 + " scale=" + scale + " acc=" + acc); 4593 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4594 } else { 4595 // The user is scrolling slowly, so decrease acceleration. 4596 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4597 if (scale > 1) acc /= scale; 4598 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4599 + off + " normTime=" + normTime + " delta=" + delta 4600 + " scale=" + scale + " acc=" + acc); 4601 acceleration = acc > 1 ? acc : 1; 4602 } 4603 } 4604 position += off; 4605 return Math.abs(position); 4606 } 4607 4608 /** 4609 * Generate the number of discrete movement events appropriate for 4610 * the currently collected trackball movement. 4611 * 4612 * @return Returns the number of discrete movements, either positive 4613 * or negative, or 0 if there is not enough trackball movement yet 4614 * for a discrete movement. 4615 */ 4616 int generate() { 4617 int movement = 0; 4618 nonAccelMovement = 0; 4619 do { 4620 final int dir = position >= 0 ? 1 : -1; 4621 switch (step) { 4622 // If we are going to execute the first step, then we want 4623 // to do this as soon as possible instead of waiting for 4624 // a full movement, in order to make things look responsive. 4625 case 0: 4626 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4627 return movement; 4628 } 4629 movement += dir; 4630 nonAccelMovement += dir; 4631 step = 1; 4632 break; 4633 // If we have generated the first movement, then we need 4634 // to wait for the second complete trackball motion before 4635 // generating the second discrete movement. 4636 case 1: 4637 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4638 return movement; 4639 } 4640 movement += dir; 4641 nonAccelMovement += dir; 4642 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4643 step = 2; 4644 break; 4645 // After the first two, we generate discrete movements 4646 // consistently with the trackball, applying an acceleration 4647 // if the trackball is moving quickly. This is a simple 4648 // acceleration on top of what we already compute based 4649 // on how quickly the wheel is being turned, to apply 4650 // a longer increasing acceleration to continuous movement 4651 // in one direction. 4652 default: 4653 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4654 return movement; 4655 } 4656 movement += dir; 4657 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4658 float acc = acceleration; 4659 acc *= 1.1f; 4660 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4661 break; 4662 } 4663 } while (true); 4664 } 4665 } 4666 4667 /** 4668 * Creates dpad events from unhandled joystick movements. 4669 */ 4670 final class SyntheticJoystickHandler extends Handler { 4671 private final static String TAG = "SyntheticJoystickHandler"; 4672 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4673 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4674 4675 private int mLastXDirection; 4676 private int mLastYDirection; 4677 private int mLastXKeyCode; 4678 private int mLastYKeyCode; 4679 4680 public SyntheticJoystickHandler() { 4681 super(true); 4682 } 4683 4684 @Override 4685 public void handleMessage(Message msg) { 4686 switch (msg.what) { 4687 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4688 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4689 KeyEvent oldEvent = (KeyEvent)msg.obj; 4690 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4691 SystemClock.uptimeMillis(), 4692 oldEvent.getRepeatCount() + 1); 4693 if (mAttachInfo.mHasWindowFocus) { 4694 enqueueInputEvent(e); 4695 Message m = obtainMessage(msg.what, e); 4696 m.setAsynchronous(true); 4697 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4698 } 4699 } break; 4700 } 4701 } 4702 4703 public void process(MotionEvent event) { 4704 switch(event.getActionMasked()) { 4705 case MotionEvent.ACTION_CANCEL: 4706 cancel(event); 4707 break; 4708 case MotionEvent.ACTION_MOVE: 4709 update(event, true); 4710 break; 4711 default: 4712 Log.w(mTag, "Unexpected action: " + event.getActionMasked()); 4713 } 4714 } 4715 4716 private void cancel(MotionEvent event) { 4717 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4718 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4719 update(event, false); 4720 } 4721 4722 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4723 final long time = event.getEventTime(); 4724 final int metaState = event.getMetaState(); 4725 final int deviceId = event.getDeviceId(); 4726 final int source = event.getSource(); 4727 4728 int xDirection = joystickAxisValueToDirection( 4729 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4730 if (xDirection == 0) { 4731 xDirection = joystickAxisValueToDirection(event.getX()); 4732 } 4733 4734 int yDirection = joystickAxisValueToDirection( 4735 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4736 if (yDirection == 0) { 4737 yDirection = joystickAxisValueToDirection(event.getY()); 4738 } 4739 4740 if (xDirection != mLastXDirection) { 4741 if (mLastXKeyCode != 0) { 4742 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4743 enqueueInputEvent(new KeyEvent(time, time, 4744 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4745 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4746 mLastXKeyCode = 0; 4747 } 4748 4749 mLastXDirection = xDirection; 4750 4751 if (xDirection != 0 && synthesizeNewKeys) { 4752 mLastXKeyCode = xDirection > 0 4753 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4754 final KeyEvent e = new KeyEvent(time, time, 4755 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4756 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4757 enqueueInputEvent(e); 4758 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4759 m.setAsynchronous(true); 4760 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4761 } 4762 } 4763 4764 if (yDirection != mLastYDirection) { 4765 if (mLastYKeyCode != 0) { 4766 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4767 enqueueInputEvent(new KeyEvent(time, time, 4768 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4769 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4770 mLastYKeyCode = 0; 4771 } 4772 4773 mLastYDirection = yDirection; 4774 4775 if (yDirection != 0 && synthesizeNewKeys) { 4776 mLastYKeyCode = yDirection > 0 4777 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4778 final KeyEvent e = new KeyEvent(time, time, 4779 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4780 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4781 enqueueInputEvent(e); 4782 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4783 m.setAsynchronous(true); 4784 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4785 } 4786 } 4787 } 4788 4789 private int joystickAxisValueToDirection(float value) { 4790 if (value >= 0.5f) { 4791 return 1; 4792 } else if (value <= -0.5f) { 4793 return -1; 4794 } else { 4795 return 0; 4796 } 4797 } 4798 } 4799 4800 /** 4801 * Creates dpad events from unhandled touch navigation movements. 4802 */ 4803 final class SyntheticTouchNavigationHandler extends Handler { 4804 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4805 private static final boolean LOCAL_DEBUG = false; 4806 4807 // Assumed nominal width and height in millimeters of a touch navigation pad, 4808 // if no resolution information is available from the input system. 4809 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4810 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4811 4812 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4813 4814 // The nominal distance traveled to move by one unit. 4815 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4816 4817 // Minimum and maximum fling velocity in ticks per second. 4818 // The minimum velocity should be set such that we perform enough ticks per 4819 // second that the fling appears to be fluid. For example, if we set the minimum 4820 // to 2 ticks per second, then there may be up to half a second delay between the next 4821 // to last and last ticks which is noticeably discrete and jerky. This value should 4822 // probably not be set to anything less than about 4. 4823 // If fling accuracy is a problem then consider tuning the tick distance instead. 4824 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4825 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4826 4827 // Fling velocity decay factor applied after each new key is emitted. 4828 // This parameter controls the deceleration and overall duration of the fling. 4829 // The fling stops automatically when its velocity drops below the minimum 4830 // fling velocity defined above. 4831 private static final float FLING_TICK_DECAY = 0.8f; 4832 4833 /* The input device that we are tracking. */ 4834 4835 private int mCurrentDeviceId = -1; 4836 private int mCurrentSource; 4837 private boolean mCurrentDeviceSupported; 4838 4839 /* Configuration for the current input device. */ 4840 4841 // The scaled tick distance. A movement of this amount should generally translate 4842 // into a single dpad event in a given direction. 4843 private float mConfigTickDistance; 4844 4845 // The minimum and maximum scaled fling velocity. 4846 private float mConfigMinFlingVelocity; 4847 private float mConfigMaxFlingVelocity; 4848 4849 /* Tracking state. */ 4850 4851 // The velocity tracker for detecting flings. 4852 private VelocityTracker mVelocityTracker; 4853 4854 // The active pointer id, or -1 if none. 4855 private int mActivePointerId = -1; 4856 4857 // Location where tracking started. 4858 private float mStartX; 4859 private float mStartY; 4860 4861 // Most recently observed position. 4862 private float mLastX; 4863 private float mLastY; 4864 4865 // Accumulated movement delta since the last direction key was sent. 4866 private float mAccumulatedX; 4867 private float mAccumulatedY; 4868 4869 // Set to true if any movement was delivered to the app. 4870 // Implies that tap slop was exceeded. 4871 private boolean mConsumedMovement; 4872 4873 // The most recently sent key down event. 4874 // The keycode remains set until the direction changes or a fling ends 4875 // so that repeated key events may be generated as required. 4876 private long mPendingKeyDownTime; 4877 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4878 private int mPendingKeyRepeatCount; 4879 private int mPendingKeyMetaState; 4880 4881 // The current fling velocity while a fling is in progress. 4882 private boolean mFlinging; 4883 private float mFlingVelocity; 4884 4885 public SyntheticTouchNavigationHandler() { 4886 super(true); 4887 } 4888 4889 public void process(MotionEvent event) { 4890 // Update the current device information. 4891 final long time = event.getEventTime(); 4892 final int deviceId = event.getDeviceId(); 4893 final int source = event.getSource(); 4894 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4895 finishKeys(time); 4896 finishTracking(time); 4897 mCurrentDeviceId = deviceId; 4898 mCurrentSource = source; 4899 mCurrentDeviceSupported = false; 4900 InputDevice device = event.getDevice(); 4901 if (device != null) { 4902 // In order to support an input device, we must know certain 4903 // characteristics about it, such as its size and resolution. 4904 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4905 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4906 if (xRange != null && yRange != null) { 4907 mCurrentDeviceSupported = true; 4908 4909 // Infer the resolution if it not actually known. 4910 float xRes = xRange.getResolution(); 4911 if (xRes <= 0) { 4912 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4913 } 4914 float yRes = yRange.getResolution(); 4915 if (yRes <= 0) { 4916 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4917 } 4918 float nominalRes = (xRes + yRes) * 0.5f; 4919 4920 // Precompute all of the configuration thresholds we will need. 4921 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4922 mConfigMinFlingVelocity = 4923 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4924 mConfigMaxFlingVelocity = 4925 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4926 4927 if (LOCAL_DEBUG) { 4928 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4929 + " (" + Integer.toHexString(mCurrentSource) + "): " 4930 + ", mConfigTickDistance=" + mConfigTickDistance 4931 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4932 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4933 } 4934 } 4935 } 4936 } 4937 if (!mCurrentDeviceSupported) { 4938 return; 4939 } 4940 4941 // Handle the event. 4942 final int action = event.getActionMasked(); 4943 switch (action) { 4944 case MotionEvent.ACTION_DOWN: { 4945 boolean caughtFling = mFlinging; 4946 finishKeys(time); 4947 finishTracking(time); 4948 mActivePointerId = event.getPointerId(0); 4949 mVelocityTracker = VelocityTracker.obtain(); 4950 mVelocityTracker.addMovement(event); 4951 mStartX = event.getX(); 4952 mStartY = event.getY(); 4953 mLastX = mStartX; 4954 mLastY = mStartY; 4955 mAccumulatedX = 0; 4956 mAccumulatedY = 0; 4957 4958 // If we caught a fling, then pretend that the tap slop has already 4959 // been exceeded to suppress taps whose only purpose is to stop the fling. 4960 mConsumedMovement = caughtFling; 4961 break; 4962 } 4963 4964 case MotionEvent.ACTION_MOVE: 4965 case MotionEvent.ACTION_UP: { 4966 if (mActivePointerId < 0) { 4967 break; 4968 } 4969 final int index = event.findPointerIndex(mActivePointerId); 4970 if (index < 0) { 4971 finishKeys(time); 4972 finishTracking(time); 4973 break; 4974 } 4975 4976 mVelocityTracker.addMovement(event); 4977 final float x = event.getX(index); 4978 final float y = event.getY(index); 4979 mAccumulatedX += x - mLastX; 4980 mAccumulatedY += y - mLastY; 4981 mLastX = x; 4982 mLastY = y; 4983 4984 // Consume any accumulated movement so far. 4985 final int metaState = event.getMetaState(); 4986 consumeAccumulatedMovement(time, metaState); 4987 4988 // Detect taps and flings. 4989 if (action == MotionEvent.ACTION_UP) { 4990 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4991 // It might be a fling. 4992 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4993 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4994 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4995 if (!startFling(time, vx, vy)) { 4996 finishKeys(time); 4997 } 4998 } 4999 finishTracking(time); 5000 } 5001 break; 5002 } 5003 5004 case MotionEvent.ACTION_CANCEL: { 5005 finishKeys(time); 5006 finishTracking(time); 5007 break; 5008 } 5009 } 5010 } 5011 5012 public void cancel(MotionEvent event) { 5013 if (mCurrentDeviceId == event.getDeviceId() 5014 && mCurrentSource == event.getSource()) { 5015 final long time = event.getEventTime(); 5016 finishKeys(time); 5017 finishTracking(time); 5018 } 5019 } 5020 5021 private void finishKeys(long time) { 5022 cancelFling(); 5023 sendKeyUp(time); 5024 } 5025 5026 private void finishTracking(long time) { 5027 if (mActivePointerId >= 0) { 5028 mActivePointerId = -1; 5029 mVelocityTracker.recycle(); 5030 mVelocityTracker = null; 5031 } 5032 } 5033 5034 private void consumeAccumulatedMovement(long time, int metaState) { 5035 final float absX = Math.abs(mAccumulatedX); 5036 final float absY = Math.abs(mAccumulatedY); 5037 if (absX >= absY) { 5038 if (absX >= mConfigTickDistance) { 5039 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 5040 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 5041 mAccumulatedY = 0; 5042 mConsumedMovement = true; 5043 } 5044 } else { 5045 if (absY >= mConfigTickDistance) { 5046 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 5047 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 5048 mAccumulatedX = 0; 5049 mConsumedMovement = true; 5050 } 5051 } 5052 } 5053 5054 private float consumeAccumulatedMovement(long time, int metaState, 5055 float accumulator, int negativeKeyCode, int positiveKeyCode) { 5056 while (accumulator <= -mConfigTickDistance) { 5057 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 5058 accumulator += mConfigTickDistance; 5059 } 5060 while (accumulator >= mConfigTickDistance) { 5061 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 5062 accumulator -= mConfigTickDistance; 5063 } 5064 return accumulator; 5065 } 5066 5067 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 5068 if (mPendingKeyCode != keyCode) { 5069 sendKeyUp(time); 5070 mPendingKeyDownTime = time; 5071 mPendingKeyCode = keyCode; 5072 mPendingKeyRepeatCount = 0; 5073 } else { 5074 mPendingKeyRepeatCount += 1; 5075 } 5076 mPendingKeyMetaState = metaState; 5077 5078 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 5079 // but it doesn't quite make sense when simulating the events in this way. 5080 if (LOCAL_DEBUG) { 5081 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 5082 + ", repeatCount=" + mPendingKeyRepeatCount 5083 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5084 } 5085 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5086 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 5087 mPendingKeyMetaState, mCurrentDeviceId, 5088 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 5089 } 5090 5091 private void sendKeyUp(long time) { 5092 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5093 if (LOCAL_DEBUG) { 5094 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 5095 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5096 } 5097 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5098 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 5099 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 5100 mCurrentSource)); 5101 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5102 } 5103 } 5104 5105 private boolean startFling(long time, float vx, float vy) { 5106 if (LOCAL_DEBUG) { 5107 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 5108 + ", min=" + mConfigMinFlingVelocity); 5109 } 5110 5111 // Flings must be oriented in the same direction as the preceding movements. 5112 switch (mPendingKeyCode) { 5113 case KeyEvent.KEYCODE_DPAD_LEFT: 5114 if (-vx >= mConfigMinFlingVelocity 5115 && Math.abs(vy) < mConfigMinFlingVelocity) { 5116 mFlingVelocity = -vx; 5117 break; 5118 } 5119 return false; 5120 5121 case KeyEvent.KEYCODE_DPAD_RIGHT: 5122 if (vx >= mConfigMinFlingVelocity 5123 && Math.abs(vy) < mConfigMinFlingVelocity) { 5124 mFlingVelocity = vx; 5125 break; 5126 } 5127 return false; 5128 5129 case KeyEvent.KEYCODE_DPAD_UP: 5130 if (-vy >= mConfigMinFlingVelocity 5131 && Math.abs(vx) < mConfigMinFlingVelocity) { 5132 mFlingVelocity = -vy; 5133 break; 5134 } 5135 return false; 5136 5137 case KeyEvent.KEYCODE_DPAD_DOWN: 5138 if (vy >= mConfigMinFlingVelocity 5139 && Math.abs(vx) < mConfigMinFlingVelocity) { 5140 mFlingVelocity = vy; 5141 break; 5142 } 5143 return false; 5144 } 5145 5146 // Post the first fling event. 5147 mFlinging = postFling(time); 5148 return mFlinging; 5149 } 5150 5151 private boolean postFling(long time) { 5152 // The idea here is to estimate the time when the pointer would have 5153 // traveled one tick distance unit given the current fling velocity. 5154 // This effect creates continuity of motion. 5155 if (mFlingVelocity >= mConfigMinFlingVelocity) { 5156 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 5157 postAtTime(mFlingRunnable, time + delay); 5158 if (LOCAL_DEBUG) { 5159 Log.d(LOCAL_TAG, "Posted fling: velocity=" 5160 + mFlingVelocity + ", delay=" + delay 5161 + ", keyCode=" + mPendingKeyCode); 5162 } 5163 return true; 5164 } 5165 return false; 5166 } 5167 5168 private void cancelFling() { 5169 if (mFlinging) { 5170 removeCallbacks(mFlingRunnable); 5171 mFlinging = false; 5172 } 5173 } 5174 5175 private final Runnable mFlingRunnable = new Runnable() { 5176 @Override 5177 public void run() { 5178 final long time = SystemClock.uptimeMillis(); 5179 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5180 mFlingVelocity *= FLING_TICK_DECAY; 5181 if (!postFling(time)) { 5182 mFlinging = false; 5183 finishKeys(time); 5184 } 5185 } 5186 }; 5187 } 5188 5189 final class SyntheticKeyboardHandler { 5190 public void process(KeyEvent event) { 5191 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5192 return; 5193 } 5194 5195 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5196 final int keyCode = event.getKeyCode(); 5197 final int metaState = event.getMetaState(); 5198 5199 // Check for fallback actions specified by the key character map. 5200 KeyCharacterMap.FallbackAction fallbackAction = 5201 kcm.getFallbackAction(keyCode, metaState); 5202 if (fallbackAction != null) { 5203 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5204 KeyEvent fallbackEvent = KeyEvent.obtain( 5205 event.getDownTime(), event.getEventTime(), 5206 event.getAction(), fallbackAction.keyCode, 5207 event.getRepeatCount(), fallbackAction.metaState, 5208 event.getDeviceId(), event.getScanCode(), 5209 flags, event.getSource(), null); 5210 fallbackAction.recycle(); 5211 enqueueInputEvent(fallbackEvent); 5212 } 5213 } 5214 } 5215 5216 /** 5217 * Returns true if the key is used for keyboard navigation. 5218 * @param keyEvent The key event. 5219 * @return True if the key is used for keyboard navigation. 5220 */ 5221 private static boolean isNavigationKey(KeyEvent keyEvent) { 5222 switch (keyEvent.getKeyCode()) { 5223 case KeyEvent.KEYCODE_DPAD_LEFT: 5224 case KeyEvent.KEYCODE_DPAD_RIGHT: 5225 case KeyEvent.KEYCODE_DPAD_UP: 5226 case KeyEvent.KEYCODE_DPAD_DOWN: 5227 case KeyEvent.KEYCODE_DPAD_CENTER: 5228 case KeyEvent.KEYCODE_PAGE_UP: 5229 case KeyEvent.KEYCODE_PAGE_DOWN: 5230 case KeyEvent.KEYCODE_MOVE_HOME: 5231 case KeyEvent.KEYCODE_MOVE_END: 5232 case KeyEvent.KEYCODE_TAB: 5233 case KeyEvent.KEYCODE_SPACE: 5234 case KeyEvent.KEYCODE_ENTER: 5235 return true; 5236 } 5237 return false; 5238 } 5239 5240 /** 5241 * Returns true if the key is used for typing. 5242 * @param keyEvent The key event. 5243 * @return True if the key is used for typing. 5244 */ 5245 private static boolean isTypingKey(KeyEvent keyEvent) { 5246 return keyEvent.getUnicodeChar() > 0; 5247 } 5248 5249 /** 5250 * See if the key event means we should leave touch mode (and leave touch mode if so). 5251 * @param event The key event. 5252 * @return Whether this key event should be consumed (meaning the act of 5253 * leaving touch mode alone is considered the event). 5254 */ 5255 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5256 // Only relevant in touch mode. 5257 if (!mAttachInfo.mInTouchMode) { 5258 return false; 5259 } 5260 5261 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5262 final int action = event.getAction(); 5263 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5264 return false; 5265 } 5266 5267 // Don't leave touch mode if the IME told us not to. 5268 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5269 return false; 5270 } 5271 5272 // If the key can be used for keyboard navigation then leave touch mode 5273 // and select a focused view if needed (in ensureTouchMode). 5274 // When a new focused view is selected, we consume the navigation key because 5275 // navigation doesn't make much sense unless a view already has focus so 5276 // the key's purpose is to set focus. 5277 if (isNavigationKey(event)) { 5278 return ensureTouchMode(false); 5279 } 5280 5281 // If the key can be used for typing then leave touch mode 5282 // and select a focused view if needed (in ensureTouchMode). 5283 // Always allow the view to process the typing key. 5284 if (isTypingKey(event)) { 5285 ensureTouchMode(false); 5286 return false; 5287 } 5288 5289 return false; 5290 } 5291 5292 /* drag/drop */ 5293 void setLocalDragState(Object obj) { 5294 mLocalDragState = obj; 5295 } 5296 5297 private void handleDragEvent(DragEvent event) { 5298 // From the root, only drag start/end/location are dispatched. entered/exited 5299 // are determined and dispatched by the viewgroup hierarchy, who then report 5300 // that back here for ultimate reporting back to the framework. 5301 if (mView != null && mAdded) { 5302 final int what = event.mAction; 5303 5304 if (what == DragEvent.ACTION_DRAG_EXITED) { 5305 // A direct EXITED event means that the window manager knows we've just crossed 5306 // a window boundary, so the current drag target within this one must have 5307 // just been exited. Send it the usual notifications and then we're done 5308 // for now. 5309 mView.dispatchDragEvent(event); 5310 } else { 5311 // Cache the drag description when the operation starts, then fill it in 5312 // on subsequent calls as a convenience 5313 if (what == DragEvent.ACTION_DRAG_STARTED) { 5314 mCurrentDragView = null; // Start the current-recipient tracking 5315 mDragDescription = event.mClipDescription; 5316 } else { 5317 event.mClipDescription = mDragDescription; 5318 } 5319 5320 // For events with a [screen] location, translate into window coordinates 5321 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5322 mDragPoint.set(event.mX, event.mY); 5323 if (mTranslator != null) { 5324 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5325 } 5326 5327 if (mCurScrollY != 0) { 5328 mDragPoint.offset(0, mCurScrollY); 5329 } 5330 5331 event.mX = mDragPoint.x; 5332 event.mY = mDragPoint.y; 5333 } 5334 5335 // Remember who the current drag target is pre-dispatch 5336 final View prevDragView = mCurrentDragView; 5337 5338 // Now dispatch the drag/drop event 5339 boolean result = mView.dispatchDragEvent(event); 5340 5341 // If we changed apparent drag target, tell the OS about it 5342 if (prevDragView != mCurrentDragView) { 5343 try { 5344 if (prevDragView != null) { 5345 mWindowSession.dragRecipientExited(mWindow); 5346 } 5347 if (mCurrentDragView != null) { 5348 mWindowSession.dragRecipientEntered(mWindow); 5349 } 5350 } catch (RemoteException e) { 5351 Slog.e(mTag, "Unable to note drag target change"); 5352 } 5353 } 5354 5355 // Report the drop result when we're done 5356 if (what == DragEvent.ACTION_DROP) { 5357 mDragDescription = null; 5358 try { 5359 Log.i(mTag, "Reporting drop result: " + result); 5360 mWindowSession.reportDropResult(mWindow, result); 5361 } catch (RemoteException e) { 5362 Log.e(mTag, "Unable to report drop result"); 5363 } 5364 } 5365 5366 // When the drag operation ends, reset drag-related state 5367 if (what == DragEvent.ACTION_DRAG_ENDED) { 5368 setLocalDragState(null); 5369 mAttachInfo.mDragToken = null; 5370 if (mAttachInfo.mDragSurface != null) { 5371 mAttachInfo.mDragSurface.release(); 5372 mAttachInfo.mDragSurface = null; 5373 } 5374 } 5375 } 5376 } 5377 event.recycle(); 5378 } 5379 5380 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5381 if (mSeq != args.seq) { 5382 // The sequence has changed, so we need to update our value and make 5383 // sure to do a traversal afterward so the window manager is given our 5384 // most recent data. 5385 mSeq = args.seq; 5386 mAttachInfo.mForceReportNewAttributes = true; 5387 scheduleTraversals(); 5388 } 5389 if (mView == null) return; 5390 if (args.localChanges != 0) { 5391 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5392 } 5393 5394 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5395 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5396 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5397 mView.dispatchSystemUiVisibilityChanged(visibility); 5398 } 5399 } 5400 5401 public void handleDispatchWindowShown() { 5402 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5403 } 5404 5405 public void getLastTouchPoint(Point outLocation) { 5406 outLocation.x = (int) mLastTouchPoint.x; 5407 outLocation.y = (int) mLastTouchPoint.y; 5408 } 5409 5410 public void setDragFocus(View newDragTarget) { 5411 if (mCurrentDragView != newDragTarget) { 5412 mCurrentDragView = newDragTarget; 5413 } 5414 } 5415 5416 private AudioManager getAudioManager() { 5417 if (mView == null) { 5418 throw new IllegalStateException("getAudioManager called when there is no mView"); 5419 } 5420 if (mAudioManager == null) { 5421 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5422 } 5423 return mAudioManager; 5424 } 5425 5426 public AccessibilityInteractionController getAccessibilityInteractionController() { 5427 if (mView == null) { 5428 throw new IllegalStateException("getAccessibilityInteractionController" 5429 + " called when there is no mView"); 5430 } 5431 if (mAccessibilityInteractionController == null) { 5432 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5433 } 5434 return mAccessibilityInteractionController; 5435 } 5436 5437 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5438 boolean insetsPending) throws RemoteException { 5439 5440 float appScale = mAttachInfo.mApplicationScale; 5441 boolean restore = false; 5442 if (params != null && mTranslator != null) { 5443 restore = true; 5444 params.backup(); 5445 mTranslator.translateWindowLayout(params); 5446 } 5447 if (params != null) { 5448 if (DBG) Log.d(mTag, "WindowLayout in layoutWindow:" + params); 5449 } 5450 mPendingConfiguration.seq = 0; 5451 //Log.d(mTag, ">>>>>> CALLING relayout"); 5452 if (params != null && mOrigWindowType != params.type) { 5453 // For compatibility with old apps, don't crash here. 5454 if (mTargetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5455 Slog.w(mTag, "Window type can not be changed after " 5456 + "the window is added; ignoring change of " + mView); 5457 params.type = mOrigWindowType; 5458 } 5459 } 5460 int relayoutResult = mWindowSession.relayout( 5461 mWindow, mSeq, params, 5462 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5463 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5464 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5465 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5466 mPendingStableInsets, mPendingOutsets, mPendingConfiguration, mSurface); 5467 //Log.d(mTag, "<<<<<< BACK FROM relayout"); 5468 if (restore) { 5469 params.restore(); 5470 } 5471 5472 if (mTranslator != null) { 5473 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5474 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5475 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5476 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5477 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5478 } 5479 return relayoutResult; 5480 } 5481 5482 /** 5483 * {@inheritDoc} 5484 */ 5485 @Override 5486 public void playSoundEffect(int effectId) { 5487 checkThread(); 5488 5489 try { 5490 final AudioManager audioManager = getAudioManager(); 5491 5492 switch (effectId) { 5493 case SoundEffectConstants.CLICK: 5494 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5495 return; 5496 case SoundEffectConstants.NAVIGATION_DOWN: 5497 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5498 return; 5499 case SoundEffectConstants.NAVIGATION_LEFT: 5500 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5501 return; 5502 case SoundEffectConstants.NAVIGATION_RIGHT: 5503 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5504 return; 5505 case SoundEffectConstants.NAVIGATION_UP: 5506 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5507 return; 5508 default: 5509 throw new IllegalArgumentException("unknown effect id " + effectId + 5510 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5511 } 5512 } catch (IllegalStateException e) { 5513 // Exception thrown by getAudioManager() when mView is null 5514 Log.e(mTag, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5515 e.printStackTrace(); 5516 } 5517 } 5518 5519 /** 5520 * {@inheritDoc} 5521 */ 5522 @Override 5523 public boolean performHapticFeedback(int effectId, boolean always) { 5524 try { 5525 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5526 } catch (RemoteException e) { 5527 return false; 5528 } 5529 } 5530 5531 /** 5532 * {@inheritDoc} 5533 */ 5534 @Override 5535 public View focusSearch(View focused, int direction) { 5536 checkThread(); 5537 if (!(mView instanceof ViewGroup)) { 5538 return null; 5539 } 5540 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5541 } 5542 5543 public void debug() { 5544 mView.debug(); 5545 } 5546 5547 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5548 String innerPrefix = prefix + " "; 5549 writer.print(prefix); writer.println("ViewRoot:"); 5550 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5551 writer.print(" mRemoved="); writer.println(mRemoved); 5552 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5553 writer.println(mConsumeBatchedInputScheduled); 5554 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5555 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5556 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5557 writer.println(mPendingInputEventCount); 5558 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5559 writer.println(mProcessInputEventsScheduled); 5560 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5561 writer.print(mTraversalScheduled); 5562 writer.print(innerPrefix); writer.print("mIsAmbientMode="); 5563 writer.print(mIsAmbientMode); 5564 if (mTraversalScheduled) { 5565 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5566 } else { 5567 writer.println(); 5568 } 5569 mFirstInputStage.dump(innerPrefix, writer); 5570 5571 mChoreographer.dump(prefix, writer); 5572 5573 writer.print(prefix); writer.println("View Hierarchy:"); 5574 dumpViewHierarchy(innerPrefix, writer, mView); 5575 } 5576 5577 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5578 writer.print(prefix); 5579 if (view == null) { 5580 writer.println("null"); 5581 return; 5582 } 5583 writer.println(view.toString()); 5584 if (!(view instanceof ViewGroup)) { 5585 return; 5586 } 5587 ViewGroup grp = (ViewGroup)view; 5588 final int N = grp.getChildCount(); 5589 if (N <= 0) { 5590 return; 5591 } 5592 prefix = prefix + " "; 5593 for (int i=0; i<N; i++) { 5594 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5595 } 5596 } 5597 5598 public void dumpGfxInfo(int[] info) { 5599 info[0] = info[1] = 0; 5600 if (mView != null) { 5601 getGfxInfo(mView, info); 5602 } 5603 } 5604 5605 private static void getGfxInfo(View view, int[] info) { 5606 RenderNode renderNode = view.mRenderNode; 5607 info[0]++; 5608 if (renderNode != null) { 5609 info[1] += renderNode.getDebugSize(); 5610 } 5611 5612 if (view instanceof ViewGroup) { 5613 ViewGroup group = (ViewGroup) view; 5614 5615 int count = group.getChildCount(); 5616 for (int i = 0; i < count; i++) { 5617 getGfxInfo(group.getChildAt(i), info); 5618 } 5619 } 5620 } 5621 5622 /** 5623 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5624 * @return True, request has been queued. False, request has been completed. 5625 */ 5626 boolean die(boolean immediate) { 5627 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5628 // done by dispatchDetachedFromWindow will cause havoc on return. 5629 if (immediate && !mIsInTraversal) { 5630 doDie(); 5631 return false; 5632 } 5633 5634 if (!mIsDrawing) { 5635 destroyHardwareRenderer(); 5636 } else { 5637 Log.e(mTag, "Attempting to destroy the window while drawing!\n" + 5638 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5639 } 5640 mHandler.sendEmptyMessage(MSG_DIE); 5641 return true; 5642 } 5643 5644 void doDie() { 5645 checkThread(); 5646 if (LOCAL_LOGV) Log.v(mTag, "DIE in " + this + " of " + mSurface); 5647 synchronized (this) { 5648 if (mRemoved) { 5649 return; 5650 } 5651 mRemoved = true; 5652 if (mAdded) { 5653 dispatchDetachedFromWindow(); 5654 } 5655 5656 if (mAdded && !mFirst) { 5657 destroyHardwareRenderer(); 5658 5659 if (mView != null) { 5660 int viewVisibility = mView.getVisibility(); 5661 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5662 if (mWindowAttributesChanged || viewVisibilityChanged) { 5663 // If layout params have been changed, first give them 5664 // to the window manager to make sure it has the correct 5665 // animation info. 5666 try { 5667 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5668 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5669 mWindowSession.finishDrawing(mWindow); 5670 } 5671 } catch (RemoteException e) { 5672 } 5673 } 5674 5675 mSurface.release(); 5676 } 5677 } 5678 5679 mAdded = false; 5680 } 5681 WindowManagerGlobal.getInstance().doRemoveView(this); 5682 } 5683 5684 public void requestUpdateConfiguration(Configuration config) { 5685 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5686 mHandler.sendMessage(msg); 5687 } 5688 5689 public void loadSystemProperties() { 5690 mHandler.post(new Runnable() { 5691 @Override 5692 public void run() { 5693 // Profiling 5694 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5695 profileRendering(mAttachInfo.mHasWindowFocus); 5696 5697 // Hardware rendering 5698 if (mAttachInfo.mHardwareRenderer != null) { 5699 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5700 invalidate(); 5701 } 5702 } 5703 5704 // Layout debugging 5705 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5706 if (layout != mAttachInfo.mDebugLayout) { 5707 mAttachInfo.mDebugLayout = layout; 5708 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5709 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5710 } 5711 } 5712 } 5713 }); 5714 } 5715 5716 private void destroyHardwareRenderer() { 5717 ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5718 5719 if (hardwareRenderer != null) { 5720 if (mView != null) { 5721 hardwareRenderer.destroyHardwareResources(mView); 5722 } 5723 hardwareRenderer.destroy(); 5724 hardwareRenderer.setRequested(false); 5725 5726 mAttachInfo.mHardwareRenderer = null; 5727 mAttachInfo.mHardwareAccelerated = false; 5728 } 5729 } 5730 5731 public void dispatchFinishInputConnection(InputConnection connection) { 5732 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5733 mHandler.sendMessage(msg); 5734 } 5735 5736 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5737 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 5738 Configuration newConfig, Rect backDropFrame) { 5739 if (DEBUG_LAYOUT) Log.v(mTag, "Resizing " + this + ": frame=" + frame.toShortString() 5740 + " contentInsets=" + contentInsets.toShortString() 5741 + " visibleInsets=" + visibleInsets.toShortString() 5742 + " reportDraw=" + reportDraw 5743 + " backDropFrame=" + backDropFrame); 5744 5745 // Tell all listeners that we are resizing the window so that the chrome can get 5746 // updated as fast as possible on a separate thread, 5747 if (mDragResizing) { 5748 synchronized (mWindowCallbacks) { 5749 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 5750 mWindowCallbacks.get(i).onWindowSizeIsChanging(backDropFrame); 5751 } 5752 } 5753 } 5754 5755 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5756 if (mTranslator != null) { 5757 mTranslator.translateRectInScreenToAppWindow(frame); 5758 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5759 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5760 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5761 } 5762 SomeArgs args = SomeArgs.obtain(); 5763 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5764 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5765 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5766 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5767 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5768 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5769 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5770 args.arg7 = sameProcessCall ? new Rect(outsets) : outsets; 5771 args.arg8 = sameProcessCall ? new Rect(backDropFrame) : backDropFrame; 5772 msg.obj = args; 5773 mHandler.sendMessage(msg); 5774 } 5775 5776 public void dispatchMoved(int newX, int newY) { 5777 if (DEBUG_LAYOUT) Log.v(mTag, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5778 if (mTranslator != null) { 5779 PointF point = new PointF(newX, newY); 5780 mTranslator.translatePointInScreenToAppWindow(point); 5781 newX = (int) (point.x + 0.5); 5782 newY = (int) (point.y + 0.5); 5783 } 5784 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5785 mHandler.sendMessage(msg); 5786 } 5787 5788 /** 5789 * Represents a pending input event that is waiting in a queue. 5790 * 5791 * Input events are processed in serial order by the timestamp specified by 5792 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5793 * one input event to the application at a time and waits for the application 5794 * to finish handling it before delivering the next one. 5795 * 5796 * However, because the application or IME can synthesize and inject multiple 5797 * key events at a time without going through the input dispatcher, we end up 5798 * needing a queue on the application's side. 5799 */ 5800 private static final class QueuedInputEvent { 5801 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5802 public static final int FLAG_DEFERRED = 1 << 1; 5803 public static final int FLAG_FINISHED = 1 << 2; 5804 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5805 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5806 public static final int FLAG_UNHANDLED = 1 << 5; 5807 5808 public QueuedInputEvent mNext; 5809 5810 public InputEvent mEvent; 5811 public InputEventReceiver mReceiver; 5812 public int mFlags; 5813 5814 public boolean shouldSkipIme() { 5815 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5816 return true; 5817 } 5818 return mEvent instanceof MotionEvent 5819 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5820 } 5821 5822 public boolean shouldSendToSynthesizer() { 5823 if ((mFlags & FLAG_UNHANDLED) != 0) { 5824 return true; 5825 } 5826 5827 return false; 5828 } 5829 5830 @Override 5831 public String toString() { 5832 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5833 boolean hasPrevious = false; 5834 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5835 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5836 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5837 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5838 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5839 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5840 if (!hasPrevious) { 5841 sb.append("0"); 5842 } 5843 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5844 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5845 sb.append(", mEvent=" + mEvent + "}"); 5846 return sb.toString(); 5847 } 5848 5849 private boolean flagToString(String name, int flag, 5850 boolean hasPrevious, StringBuilder sb) { 5851 if ((mFlags & flag) != 0) { 5852 if (hasPrevious) { 5853 sb.append("|"); 5854 } 5855 sb.append(name); 5856 return true; 5857 } 5858 return hasPrevious; 5859 } 5860 } 5861 5862 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5863 InputEventReceiver receiver, int flags) { 5864 QueuedInputEvent q = mQueuedInputEventPool; 5865 if (q != null) { 5866 mQueuedInputEventPoolSize -= 1; 5867 mQueuedInputEventPool = q.mNext; 5868 q.mNext = null; 5869 } else { 5870 q = new QueuedInputEvent(); 5871 } 5872 5873 q.mEvent = event; 5874 q.mReceiver = receiver; 5875 q.mFlags = flags; 5876 return q; 5877 } 5878 5879 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5880 q.mEvent = null; 5881 q.mReceiver = null; 5882 5883 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5884 mQueuedInputEventPoolSize += 1; 5885 q.mNext = mQueuedInputEventPool; 5886 mQueuedInputEventPool = q; 5887 } 5888 } 5889 5890 void enqueueInputEvent(InputEvent event) { 5891 enqueueInputEvent(event, null, 0, false); 5892 } 5893 5894 void enqueueInputEvent(InputEvent event, 5895 InputEventReceiver receiver, int flags, boolean processImmediately) { 5896 adjustInputEventForCompatibility(event); 5897 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5898 5899 // Always enqueue the input event in order, regardless of its time stamp. 5900 // We do this because the application or the IME may inject key events 5901 // in response to touch events and we want to ensure that the injected keys 5902 // are processed in the order they were received and we cannot trust that 5903 // the time stamp of injected events are monotonic. 5904 QueuedInputEvent last = mPendingInputEventTail; 5905 if (last == null) { 5906 mPendingInputEventHead = q; 5907 mPendingInputEventTail = q; 5908 } else { 5909 last.mNext = q; 5910 mPendingInputEventTail = q; 5911 } 5912 mPendingInputEventCount += 1; 5913 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5914 mPendingInputEventCount); 5915 5916 if (processImmediately) { 5917 doProcessInputEvents(); 5918 } else { 5919 scheduleProcessInputEvents(); 5920 } 5921 } 5922 5923 private void scheduleProcessInputEvents() { 5924 if (!mProcessInputEventsScheduled) { 5925 mProcessInputEventsScheduled = true; 5926 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5927 msg.setAsynchronous(true); 5928 mHandler.sendMessage(msg); 5929 } 5930 } 5931 5932 void doProcessInputEvents() { 5933 // Deliver all pending input events in the queue. 5934 while (mPendingInputEventHead != null) { 5935 QueuedInputEvent q = mPendingInputEventHead; 5936 mPendingInputEventHead = q.mNext; 5937 if (mPendingInputEventHead == null) { 5938 mPendingInputEventTail = null; 5939 } 5940 q.mNext = null; 5941 5942 mPendingInputEventCount -= 1; 5943 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5944 mPendingInputEventCount); 5945 5946 long eventTime = q.mEvent.getEventTimeNano(); 5947 long oldestEventTime = eventTime; 5948 if (q.mEvent instanceof MotionEvent) { 5949 MotionEvent me = (MotionEvent)q.mEvent; 5950 if (me.getHistorySize() > 0) { 5951 oldestEventTime = me.getHistoricalEventTimeNano(0); 5952 } 5953 } 5954 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 5955 5956 deliverInputEvent(q); 5957 } 5958 5959 // We are done processing all input events that we can process right now 5960 // so we can clear the pending flag immediately. 5961 if (mProcessInputEventsScheduled) { 5962 mProcessInputEventsScheduled = false; 5963 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5964 } 5965 } 5966 5967 private void deliverInputEvent(QueuedInputEvent q) { 5968 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5969 q.mEvent.getSequenceNumber()); 5970 if (mInputEventConsistencyVerifier != null) { 5971 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5972 } 5973 5974 InputStage stage; 5975 if (q.shouldSendToSynthesizer()) { 5976 stage = mSyntheticInputStage; 5977 } else { 5978 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5979 } 5980 5981 if (stage != null) { 5982 stage.deliver(q); 5983 } else { 5984 finishInputEvent(q); 5985 } 5986 } 5987 5988 private void finishInputEvent(QueuedInputEvent q) { 5989 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5990 q.mEvent.getSequenceNumber()); 5991 5992 if (q.mReceiver != null) { 5993 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5994 q.mReceiver.finishInputEvent(q.mEvent, handled); 5995 } else { 5996 q.mEvent.recycleIfNeededAfterDispatch(); 5997 } 5998 5999 recycleQueuedInputEvent(q); 6000 } 6001 6002 private void adjustInputEventForCompatibility(InputEvent e) { 6003 if (mTargetSdkVersion < Build.VERSION_CODES.M && e instanceof MotionEvent) { 6004 MotionEvent motion = (MotionEvent) e; 6005 final int mask = 6006 MotionEvent.BUTTON_STYLUS_PRIMARY | MotionEvent.BUTTON_STYLUS_SECONDARY; 6007 final int buttonState = motion.getButtonState(); 6008 final int compatButtonState = (buttonState & mask) >> 4; 6009 if (compatButtonState != 0) { 6010 motion.setButtonState(buttonState | compatButtonState); 6011 } 6012 } 6013 } 6014 6015 static boolean isTerminalInputEvent(InputEvent event) { 6016 if (event instanceof KeyEvent) { 6017 final KeyEvent keyEvent = (KeyEvent)event; 6018 return keyEvent.getAction() == KeyEvent.ACTION_UP; 6019 } else { 6020 final MotionEvent motionEvent = (MotionEvent)event; 6021 final int action = motionEvent.getAction(); 6022 return action == MotionEvent.ACTION_UP 6023 || action == MotionEvent.ACTION_CANCEL 6024 || action == MotionEvent.ACTION_HOVER_EXIT; 6025 } 6026 } 6027 6028 void scheduleConsumeBatchedInput() { 6029 if (!mConsumeBatchedInputScheduled) { 6030 mConsumeBatchedInputScheduled = true; 6031 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 6032 mConsumedBatchedInputRunnable, null); 6033 } 6034 } 6035 6036 void unscheduleConsumeBatchedInput() { 6037 if (mConsumeBatchedInputScheduled) { 6038 mConsumeBatchedInputScheduled = false; 6039 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 6040 mConsumedBatchedInputRunnable, null); 6041 } 6042 } 6043 6044 void scheduleConsumeBatchedInputImmediately() { 6045 if (!mConsumeBatchedInputImmediatelyScheduled) { 6046 unscheduleConsumeBatchedInput(); 6047 mConsumeBatchedInputImmediatelyScheduled = true; 6048 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 6049 } 6050 } 6051 6052 void doConsumeBatchedInput(long frameTimeNanos) { 6053 if (mConsumeBatchedInputScheduled) { 6054 mConsumeBatchedInputScheduled = false; 6055 if (mInputEventReceiver != null) { 6056 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 6057 && frameTimeNanos != -1) { 6058 // If we consumed a batch here, we want to go ahead and schedule the 6059 // consumption of batched input events on the next frame. Otherwise, we would 6060 // wait until we have more input events pending and might get starved by other 6061 // things occurring in the process. If the frame time is -1, however, then 6062 // we're in a non-batching mode, so there's no need to schedule this. 6063 scheduleConsumeBatchedInput(); 6064 } 6065 } 6066 doProcessInputEvents(); 6067 } 6068 } 6069 6070 final class TraversalRunnable implements Runnable { 6071 @Override 6072 public void run() { 6073 doTraversal(); 6074 } 6075 } 6076 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 6077 6078 final class WindowInputEventReceiver extends InputEventReceiver { 6079 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 6080 super(inputChannel, looper); 6081 } 6082 6083 @Override 6084 public void onInputEvent(InputEvent event) { 6085 enqueueInputEvent(event, this, 0, true); 6086 } 6087 6088 @Override 6089 public void onBatchedInputEventPending() { 6090 if (mUnbufferedInputDispatch) { 6091 super.onBatchedInputEventPending(); 6092 } else { 6093 scheduleConsumeBatchedInput(); 6094 } 6095 } 6096 6097 @Override 6098 public void dispose() { 6099 unscheduleConsumeBatchedInput(); 6100 super.dispose(); 6101 } 6102 } 6103 WindowInputEventReceiver mInputEventReceiver; 6104 6105 final class ConsumeBatchedInputRunnable implements Runnable { 6106 @Override 6107 public void run() { 6108 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 6109 } 6110 } 6111 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 6112 new ConsumeBatchedInputRunnable(); 6113 boolean mConsumeBatchedInputScheduled; 6114 6115 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 6116 @Override 6117 public void run() { 6118 doConsumeBatchedInput(-1); 6119 } 6120 } 6121 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 6122 new ConsumeBatchedInputImmediatelyRunnable(); 6123 boolean mConsumeBatchedInputImmediatelyScheduled; 6124 6125 final class InvalidateOnAnimationRunnable implements Runnable { 6126 private boolean mPosted; 6127 private final ArrayList<View> mViews = new ArrayList<View>(); 6128 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 6129 new ArrayList<AttachInfo.InvalidateInfo>(); 6130 private View[] mTempViews; 6131 private AttachInfo.InvalidateInfo[] mTempViewRects; 6132 6133 public void addView(View view) { 6134 synchronized (this) { 6135 mViews.add(view); 6136 postIfNeededLocked(); 6137 } 6138 } 6139 6140 public void addViewRect(AttachInfo.InvalidateInfo info) { 6141 synchronized (this) { 6142 mViewRects.add(info); 6143 postIfNeededLocked(); 6144 } 6145 } 6146 6147 public void removeView(View view) { 6148 synchronized (this) { 6149 mViews.remove(view); 6150 6151 for (int i = mViewRects.size(); i-- > 0; ) { 6152 AttachInfo.InvalidateInfo info = mViewRects.get(i); 6153 if (info.target == view) { 6154 mViewRects.remove(i); 6155 info.recycle(); 6156 } 6157 } 6158 6159 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 6160 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 6161 mPosted = false; 6162 } 6163 } 6164 } 6165 6166 @Override 6167 public void run() { 6168 final int viewCount; 6169 final int viewRectCount; 6170 synchronized (this) { 6171 mPosted = false; 6172 6173 viewCount = mViews.size(); 6174 if (viewCount != 0) { 6175 mTempViews = mViews.toArray(mTempViews != null 6176 ? mTempViews : new View[viewCount]); 6177 mViews.clear(); 6178 } 6179 6180 viewRectCount = mViewRects.size(); 6181 if (viewRectCount != 0) { 6182 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6183 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6184 mViewRects.clear(); 6185 } 6186 } 6187 6188 for (int i = 0; i < viewCount; i++) { 6189 mTempViews[i].invalidate(); 6190 mTempViews[i] = null; 6191 } 6192 6193 for (int i = 0; i < viewRectCount; i++) { 6194 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6195 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6196 info.recycle(); 6197 } 6198 } 6199 6200 private void postIfNeededLocked() { 6201 if (!mPosted) { 6202 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6203 mPosted = true; 6204 } 6205 } 6206 } 6207 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6208 new InvalidateOnAnimationRunnable(); 6209 6210 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6211 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6212 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6213 } 6214 6215 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6216 long delayMilliseconds) { 6217 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6218 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6219 } 6220 6221 public void dispatchInvalidateOnAnimation(View view) { 6222 mInvalidateOnAnimationRunnable.addView(view); 6223 } 6224 6225 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6226 mInvalidateOnAnimationRunnable.addViewRect(info); 6227 } 6228 6229 public void cancelInvalidate(View view) { 6230 mHandler.removeMessages(MSG_INVALIDATE, view); 6231 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6232 // them to the pool 6233 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6234 mInvalidateOnAnimationRunnable.removeView(view); 6235 } 6236 6237 public void dispatchInputEvent(InputEvent event) { 6238 dispatchInputEvent(event, null); 6239 } 6240 6241 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6242 SomeArgs args = SomeArgs.obtain(); 6243 args.arg1 = event; 6244 args.arg2 = receiver; 6245 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6246 msg.setAsynchronous(true); 6247 mHandler.sendMessage(msg); 6248 } 6249 6250 public void synthesizeInputEvent(InputEvent event) { 6251 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6252 msg.setAsynchronous(true); 6253 mHandler.sendMessage(msg); 6254 } 6255 6256 public void dispatchKeyFromIme(KeyEvent event) { 6257 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6258 msg.setAsynchronous(true); 6259 mHandler.sendMessage(msg); 6260 } 6261 6262 /** 6263 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6264 * 6265 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6266 * passes in. 6267 */ 6268 public void dispatchUnhandledInputEvent(InputEvent event) { 6269 if (event instanceof MotionEvent) { 6270 event = MotionEvent.obtain((MotionEvent) event); 6271 } 6272 synthesizeInputEvent(event); 6273 } 6274 6275 public void dispatchAppVisibility(boolean visible) { 6276 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6277 msg.arg1 = visible ? 1 : 0; 6278 mHandler.sendMessage(msg); 6279 } 6280 6281 public void dispatchGetNewSurface() { 6282 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6283 mHandler.sendMessage(msg); 6284 } 6285 6286 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6287 Message msg = Message.obtain(); 6288 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6289 msg.arg1 = hasFocus ? 1 : 0; 6290 msg.arg2 = inTouchMode ? 1 : 0; 6291 mHandler.sendMessage(msg); 6292 } 6293 6294 public void dispatchWindowShown() { 6295 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6296 } 6297 6298 public void dispatchCloseSystemDialogs(String reason) { 6299 Message msg = Message.obtain(); 6300 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6301 msg.obj = reason; 6302 mHandler.sendMessage(msg); 6303 } 6304 6305 public void dispatchDragEvent(DragEvent event) { 6306 final int what; 6307 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6308 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6309 mHandler.removeMessages(what); 6310 } else { 6311 what = MSG_DISPATCH_DRAG_EVENT; 6312 } 6313 Message msg = mHandler.obtainMessage(what, event); 6314 mHandler.sendMessage(msg); 6315 } 6316 6317 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6318 int localValue, int localChanges) { 6319 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6320 args.seq = seq; 6321 args.globalVisibility = globalVisibility; 6322 args.localValue = localValue; 6323 args.localChanges = localChanges; 6324 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6325 } 6326 6327 public void dispatchCheckFocus() { 6328 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6329 // This will result in a call to checkFocus() below. 6330 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6331 } 6332 } 6333 6334 /** 6335 * Post a callback to send a 6336 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6337 * This event is send at most once every 6338 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6339 */ 6340 private void postSendWindowContentChangedCallback(View source, int changeType) { 6341 if (mSendWindowContentChangedAccessibilityEvent == null) { 6342 mSendWindowContentChangedAccessibilityEvent = 6343 new SendWindowContentChangedAccessibilityEvent(); 6344 } 6345 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6346 } 6347 6348 /** 6349 * Remove a posted callback to send a 6350 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6351 */ 6352 private void removeSendWindowContentChangedCallback() { 6353 if (mSendWindowContentChangedAccessibilityEvent != null) { 6354 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6355 } 6356 } 6357 6358 @Override 6359 public boolean showContextMenuForChild(View originalView) { 6360 return false; 6361 } 6362 6363 @Override 6364 public boolean showContextMenuForChild(View originalView, float x, float y) { 6365 return false; 6366 } 6367 6368 @Override 6369 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6370 return null; 6371 } 6372 6373 @Override 6374 public ActionMode startActionModeForChild( 6375 View originalView, ActionMode.Callback callback, int type) { 6376 return null; 6377 } 6378 6379 @Override 6380 public void createContextMenu(ContextMenu menu) { 6381 } 6382 6383 @Override 6384 public void childDrawableStateChanged(View child) { 6385 } 6386 6387 @Override 6388 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6389 if (mView == null || mStopped || mPausedForTransition) { 6390 return false; 6391 } 6392 // Intercept accessibility focus events fired by virtual nodes to keep 6393 // track of accessibility focus position in such nodes. 6394 final int eventType = event.getEventType(); 6395 switch (eventType) { 6396 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6397 final long sourceNodeId = event.getSourceNodeId(); 6398 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6399 sourceNodeId); 6400 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6401 if (source != null) { 6402 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6403 if (provider != null) { 6404 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6405 sourceNodeId); 6406 final AccessibilityNodeInfo node; 6407 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6408 node = provider.createAccessibilityNodeInfo( 6409 AccessibilityNodeProvider.HOST_VIEW_ID); 6410 } else { 6411 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6412 } 6413 setAccessibilityFocus(source, node); 6414 } 6415 } 6416 } break; 6417 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6418 final long sourceNodeId = event.getSourceNodeId(); 6419 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6420 sourceNodeId); 6421 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6422 if (source != null) { 6423 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6424 if (provider != null) { 6425 setAccessibilityFocus(null, null); 6426 } 6427 } 6428 } break; 6429 6430 6431 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6432 handleWindowContentChangedEvent(event); 6433 } break; 6434 } 6435 mAccessibilityManager.sendAccessibilityEvent(event); 6436 return true; 6437 } 6438 6439 /** 6440 * Updates the focused virtual view, when necessary, in response to a 6441 * content changed event. 6442 * <p> 6443 * This is necessary to get updated bounds after a position change. 6444 * 6445 * @param event an accessibility event of type 6446 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} 6447 */ 6448 private void handleWindowContentChangedEvent(AccessibilityEvent event) { 6449 final View focusedHost = mAccessibilityFocusedHost; 6450 if (focusedHost == null || mAccessibilityFocusedVirtualView == null) { 6451 // No virtual view focused, nothing to do here. 6452 return; 6453 } 6454 6455 final AccessibilityNodeProvider provider = focusedHost.getAccessibilityNodeProvider(); 6456 if (provider == null) { 6457 // Error state: virtual view with no provider. Clear focus. 6458 mAccessibilityFocusedHost = null; 6459 mAccessibilityFocusedVirtualView = null; 6460 focusedHost.clearAccessibilityFocusNoCallbacks(); 6461 return; 6462 } 6463 6464 // We only care about change types that may affect the bounds of the 6465 // focused virtual view. 6466 final int changes = event.getContentChangeTypes(); 6467 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) == 0 6468 && changes != AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6469 return; 6470 } 6471 6472 final long eventSourceNodeId = event.getSourceNodeId(); 6473 final int changedViewId = AccessibilityNodeInfo.getAccessibilityViewId(eventSourceNodeId); 6474 6475 // Search up the tree for subtree containment. 6476 boolean hostInSubtree = false; 6477 View root = mAccessibilityFocusedHost; 6478 while (root != null && !hostInSubtree) { 6479 if (changedViewId == root.getAccessibilityViewId()) { 6480 hostInSubtree = true; 6481 } else { 6482 final ViewParent parent = root.getParent(); 6483 if (parent instanceof View) { 6484 root = (View) parent; 6485 } else { 6486 root = null; 6487 } 6488 } 6489 } 6490 6491 // We care only about changes in subtrees containing the host view. 6492 if (!hostInSubtree) { 6493 return; 6494 } 6495 6496 final long focusedSourceNodeId = mAccessibilityFocusedVirtualView.getSourceNodeId(); 6497 int focusedChildId = AccessibilityNodeInfo.getVirtualDescendantId(focusedSourceNodeId); 6498 if (focusedChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6499 // TODO: Should we clear the focused virtual view? 6500 focusedChildId = AccessibilityNodeProvider.HOST_VIEW_ID; 6501 } 6502 6503 // Refresh the node for the focused virtual view. 6504 final Rect oldBounds = mTempRect; 6505 mAccessibilityFocusedVirtualView.getBoundsInScreen(oldBounds); 6506 mAccessibilityFocusedVirtualView = provider.createAccessibilityNodeInfo(focusedChildId); 6507 if (mAccessibilityFocusedVirtualView == null) { 6508 // Error state: The node no longer exists. Clear focus. 6509 mAccessibilityFocusedHost = null; 6510 focusedHost.clearAccessibilityFocusNoCallbacks(); 6511 6512 // This will probably fail, but try to keep the provider's internal 6513 // state consistent by clearing focus. 6514 provider.performAction(focusedChildId, 6515 AccessibilityAction.ACTION_CLEAR_ACCESSIBILITY_FOCUS.getId(), null); 6516 invalidateRectOnScreen(oldBounds); 6517 } else { 6518 // The node was refreshed, invalidate bounds if necessary. 6519 final Rect newBounds = mAccessibilityFocusedVirtualView.getBoundsInScreen(); 6520 if (!oldBounds.equals(newBounds)) { 6521 oldBounds.union(newBounds); 6522 invalidateRectOnScreen(oldBounds); 6523 } 6524 } 6525 } 6526 6527 @Override 6528 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6529 postSendWindowContentChangedCallback(source, changeType); 6530 } 6531 6532 @Override 6533 public boolean canResolveLayoutDirection() { 6534 return true; 6535 } 6536 6537 @Override 6538 public boolean isLayoutDirectionResolved() { 6539 return true; 6540 } 6541 6542 @Override 6543 public int getLayoutDirection() { 6544 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6545 } 6546 6547 @Override 6548 public boolean canResolveTextDirection() { 6549 return true; 6550 } 6551 6552 @Override 6553 public boolean isTextDirectionResolved() { 6554 return true; 6555 } 6556 6557 @Override 6558 public int getTextDirection() { 6559 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6560 } 6561 6562 @Override 6563 public boolean canResolveTextAlignment() { 6564 return true; 6565 } 6566 6567 @Override 6568 public boolean isTextAlignmentResolved() { 6569 return true; 6570 } 6571 6572 @Override 6573 public int getTextAlignment() { 6574 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6575 } 6576 6577 private View getCommonPredecessor(View first, View second) { 6578 if (mTempHashSet == null) { 6579 mTempHashSet = new HashSet<View>(); 6580 } 6581 HashSet<View> seen = mTempHashSet; 6582 seen.clear(); 6583 View firstCurrent = first; 6584 while (firstCurrent != null) { 6585 seen.add(firstCurrent); 6586 ViewParent firstCurrentParent = firstCurrent.mParent; 6587 if (firstCurrentParent instanceof View) { 6588 firstCurrent = (View) firstCurrentParent; 6589 } else { 6590 firstCurrent = null; 6591 } 6592 } 6593 View secondCurrent = second; 6594 while (secondCurrent != null) { 6595 if (seen.contains(secondCurrent)) { 6596 seen.clear(); 6597 return secondCurrent; 6598 } 6599 ViewParent secondCurrentParent = secondCurrent.mParent; 6600 if (secondCurrentParent instanceof View) { 6601 secondCurrent = (View) secondCurrentParent; 6602 } else { 6603 secondCurrent = null; 6604 } 6605 } 6606 seen.clear(); 6607 return null; 6608 } 6609 6610 void checkThread() { 6611 if (mThread != Thread.currentThread()) { 6612 throw new CalledFromWrongThreadException( 6613 "Only the original thread that created a view hierarchy can touch its views."); 6614 } 6615 } 6616 6617 @Override 6618 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6619 // ViewAncestor never intercepts touch event, so this can be a no-op 6620 } 6621 6622 @Override 6623 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6624 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6625 if (rectangle != null) { 6626 mTempRect.set(rectangle); 6627 mTempRect.offset(0, -mCurScrollY); 6628 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6629 try { 6630 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6631 } catch (RemoteException re) { 6632 /* ignore */ 6633 } 6634 } 6635 return scrolled; 6636 } 6637 6638 @Override 6639 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6640 // Do nothing. 6641 } 6642 6643 @Override 6644 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6645 return false; 6646 } 6647 6648 @Override 6649 public void onStopNestedScroll(View target) { 6650 } 6651 6652 @Override 6653 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6654 } 6655 6656 @Override 6657 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6658 int dxUnconsumed, int dyUnconsumed) { 6659 } 6660 6661 @Override 6662 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6663 } 6664 6665 @Override 6666 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6667 return false; 6668 } 6669 6670 @Override 6671 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6672 return false; 6673 } 6674 6675 @Override 6676 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6677 return false; 6678 } 6679 6680 /** 6681 * Force the window to report its next draw. 6682 * <p> 6683 * This method is only supposed to be used to speed up the interaction from SystemUI and window 6684 * manager when waiting for the first frame to be drawn when turning on the screen. DO NOT USE 6685 * unless you fully understand this interaction. 6686 * @hide 6687 */ 6688 public void setReportNextDraw() { 6689 mReportNextDraw = true; 6690 invalidate(); 6691 } 6692 6693 void changeCanvasOpacity(boolean opaque) { 6694 Log.d(mTag, "changeCanvasOpacity: opaque=" + opaque); 6695 if (mAttachInfo.mHardwareRenderer != null) { 6696 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6697 } 6698 } 6699 6700 long getNextFrameNumber() { 6701 long frameNumber = -1; 6702 if (mSurfaceHolder != null) { 6703 mSurfaceHolder.mSurfaceLock.lock(); 6704 } 6705 if (mSurface.isValid()) { 6706 frameNumber = mSurface.getNextFrameNumber(); 6707 } 6708 if (mSurfaceHolder != null) { 6709 mSurfaceHolder.mSurfaceLock.unlock(); 6710 } 6711 return frameNumber; 6712 } 6713 6714 class TakenSurfaceHolder extends BaseSurfaceHolder { 6715 @Override 6716 public boolean onAllowLockCanvas() { 6717 return mDrawingAllowed; 6718 } 6719 6720 @Override 6721 public void onRelayoutContainer() { 6722 // Not currently interesting -- from changing between fixed and layout size. 6723 } 6724 6725 @Override 6726 public void setFormat(int format) { 6727 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6728 } 6729 6730 @Override 6731 public void setType(int type) { 6732 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6733 } 6734 6735 @Override 6736 public void onUpdateSurface() { 6737 // We take care of format and type changes on our own. 6738 throw new IllegalStateException("Shouldn't be here"); 6739 } 6740 6741 @Override 6742 public boolean isCreating() { 6743 return mIsCreating; 6744 } 6745 6746 @Override 6747 public void setFixedSize(int width, int height) { 6748 throw new UnsupportedOperationException( 6749 "Currently only support sizing from layout"); 6750 } 6751 6752 @Override 6753 public void setKeepScreenOn(boolean screenOn) { 6754 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6755 } 6756 } 6757 6758 static class W extends IWindow.Stub { 6759 private final WeakReference<ViewRootImpl> mViewAncestor; 6760 private final IWindowSession mWindowSession; 6761 6762 W(ViewRootImpl viewAncestor) { 6763 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6764 mWindowSession = viewAncestor.mWindowSession; 6765 } 6766 6767 @Override 6768 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6769 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 6770 Configuration newConfig, Rect backDropFrame) { 6771 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6772 if (viewAncestor != null) { 6773 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6774 visibleInsets, stableInsets, outsets, reportDraw, newConfig, backDropFrame); 6775 } 6776 } 6777 6778 @Override 6779 public void moved(int newX, int newY) { 6780 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6781 if (viewAncestor != null) { 6782 viewAncestor.dispatchMoved(newX, newY); 6783 } 6784 } 6785 6786 @Override 6787 public void dispatchAppVisibility(boolean visible) { 6788 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6789 if (viewAncestor != null) { 6790 viewAncestor.dispatchAppVisibility(visible); 6791 } 6792 } 6793 6794 @Override 6795 public void dispatchGetNewSurface() { 6796 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6797 if (viewAncestor != null) { 6798 viewAncestor.dispatchGetNewSurface(); 6799 } 6800 } 6801 6802 @Override 6803 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6804 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6805 if (viewAncestor != null) { 6806 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6807 } 6808 } 6809 6810 private static int checkCallingPermission(String permission) { 6811 try { 6812 return ActivityManagerNative.getDefault().checkPermission( 6813 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6814 } catch (RemoteException e) { 6815 return PackageManager.PERMISSION_DENIED; 6816 } 6817 } 6818 6819 @Override 6820 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6821 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6822 if (viewAncestor != null) { 6823 final View view = viewAncestor.mView; 6824 if (view != null) { 6825 if (checkCallingPermission(Manifest.permission.DUMP) != 6826 PackageManager.PERMISSION_GRANTED) { 6827 throw new SecurityException("Insufficient permissions to invoke" 6828 + " executeCommand() from pid=" + Binder.getCallingPid() 6829 + ", uid=" + Binder.getCallingUid()); 6830 } 6831 6832 OutputStream clientStream = null; 6833 try { 6834 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6835 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6836 } catch (IOException e) { 6837 e.printStackTrace(); 6838 } finally { 6839 if (clientStream != null) { 6840 try { 6841 clientStream.close(); 6842 } catch (IOException e) { 6843 e.printStackTrace(); 6844 } 6845 } 6846 } 6847 } 6848 } 6849 } 6850 6851 @Override 6852 public void closeSystemDialogs(String reason) { 6853 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6854 if (viewAncestor != null) { 6855 viewAncestor.dispatchCloseSystemDialogs(reason); 6856 } 6857 } 6858 6859 @Override 6860 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6861 boolean sync) { 6862 if (sync) { 6863 try { 6864 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6865 } catch (RemoteException e) { 6866 } 6867 } 6868 } 6869 6870 @Override 6871 public void dispatchWallpaperCommand(String action, int x, int y, 6872 int z, Bundle extras, boolean sync) { 6873 if (sync) { 6874 try { 6875 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6876 } catch (RemoteException e) { 6877 } 6878 } 6879 } 6880 6881 /* Drag/drop */ 6882 @Override 6883 public void dispatchDragEvent(DragEvent event) { 6884 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6885 if (viewAncestor != null) { 6886 viewAncestor.dispatchDragEvent(event); 6887 } 6888 } 6889 6890 @Override 6891 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6892 int localValue, int localChanges) { 6893 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6894 if (viewAncestor != null) { 6895 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6896 localValue, localChanges); 6897 } 6898 } 6899 6900 @Override 6901 public void dispatchWindowShown() { 6902 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6903 if (viewAncestor != null) { 6904 viewAncestor.dispatchWindowShown(); 6905 } 6906 } 6907 } 6908 6909 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6910 public CalledFromWrongThreadException(String msg) { 6911 super(msg); 6912 } 6913 } 6914 6915 static HandlerActionQueue getRunQueue() { 6916 HandlerActionQueue rq = sRunQueues.get(); 6917 if (rq != null) { 6918 return rq; 6919 } 6920 rq = new HandlerActionQueue(); 6921 sRunQueues.set(rq); 6922 return rq; 6923 } 6924 6925 /** 6926 * Start a drag resizing which will inform all listeners that a window resize is taking place. 6927 */ 6928 private void startDragResizing(Rect initialBounds) { 6929 if (!mDragResizing) { 6930 mDragResizing = true; 6931 synchronized (mWindowCallbacks) { 6932 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 6933 mWindowCallbacks.get(i).onWindowDragResizeStart(initialBounds); 6934 } 6935 } 6936 mFullRedrawNeeded = true; 6937 } 6938 } 6939 6940 /** 6941 * End a drag resize which will inform all listeners that a window resize has ended. 6942 */ 6943 private void endDragResizing() { 6944 if (mDragResizing) { 6945 mDragResizing = false; 6946 synchronized (mWindowCallbacks) { 6947 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 6948 mWindowCallbacks.get(i).onWindowDragResizeEnd(); 6949 } 6950 } 6951 mFullRedrawNeeded = true; 6952 } 6953 } 6954 6955 private boolean updateContentDrawBounds() { 6956 boolean updated = false; 6957 synchronized (mWindowCallbacks) { 6958 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 6959 updated |= mWindowCallbacks.get(i).onContentDrawn( 6960 mWindowAttributes.surfaceInsets.left, 6961 mWindowAttributes.surfaceInsets.top, 6962 mWidth, mHeight); 6963 } 6964 } 6965 return updated | (mDragResizing && mReportNextDraw); 6966 } 6967 6968 private void requestDrawWindow() { 6969 if (mReportNextDraw) { 6970 mWindowDrawCountDown = new CountDownLatch(mWindowCallbacks.size()); 6971 } 6972 synchronized (mWindowCallbacks) { 6973 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 6974 mWindowCallbacks.get(i).onRequestDraw(mReportNextDraw); 6975 } 6976 } 6977 } 6978 6979 /** 6980 * Class for managing the accessibility interaction connection 6981 * based on the global accessibility state. 6982 */ 6983 final class AccessibilityInteractionConnectionManager 6984 implements AccessibilityStateChangeListener { 6985 @Override 6986 public void onAccessibilityStateChanged(boolean enabled) { 6987 if (enabled) { 6988 ensureConnection(); 6989 if (mAttachInfo.mHasWindowFocus) { 6990 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6991 View focusedView = mView.findFocus(); 6992 if (focusedView != null && focusedView != mView) { 6993 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6994 } 6995 } 6996 } else { 6997 ensureNoConnection(); 6998 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6999 } 7000 } 7001 7002 public void ensureConnection() { 7003 final boolean registered = 7004 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7005 if (!registered) { 7006 mAttachInfo.mAccessibilityWindowId = 7007 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 7008 new AccessibilityInteractionConnection(ViewRootImpl.this)); 7009 } 7010 } 7011 7012 public void ensureNoConnection() { 7013 final boolean registered = 7014 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7015 if (registered) { 7016 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7017 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 7018 } 7019 } 7020 } 7021 7022 final class HighContrastTextManager implements HighTextContrastChangeListener { 7023 HighContrastTextManager() { 7024 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 7025 } 7026 @Override 7027 public void onHighTextContrastStateChanged(boolean enabled) { 7028 mAttachInfo.mHighContrastText = enabled; 7029 7030 // Destroy Displaylists so they can be recreated with high contrast recordings 7031 destroyHardwareResources(); 7032 7033 // Schedule redraw, which will rerecord + redraw all text 7034 invalidate(); 7035 } 7036 } 7037 7038 /** 7039 * This class is an interface this ViewAncestor provides to the 7040 * AccessibilityManagerService to the latter can interact with 7041 * the view hierarchy in this ViewAncestor. 7042 */ 7043 static final class AccessibilityInteractionConnection 7044 extends IAccessibilityInteractionConnection.Stub { 7045 private final WeakReference<ViewRootImpl> mViewRootImpl; 7046 7047 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 7048 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 7049 } 7050 7051 @Override 7052 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 7053 Region interactiveRegion, int interactionId, 7054 IAccessibilityInteractionConnectionCallback callback, int flags, 7055 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7056 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7057 if (viewRootImpl != null && viewRootImpl.mView != null) { 7058 viewRootImpl.getAccessibilityInteractionController() 7059 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 7060 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7061 interrogatingTid, spec); 7062 } else { 7063 // We cannot make the call and notify the caller so it does not wait. 7064 try { 7065 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7066 } catch (RemoteException re) { 7067 /* best effort - ignore */ 7068 } 7069 } 7070 } 7071 7072 @Override 7073 public void performAccessibilityAction(long accessibilityNodeId, int action, 7074 Bundle arguments, int interactionId, 7075 IAccessibilityInteractionConnectionCallback callback, int flags, 7076 int interrogatingPid, long interrogatingTid) { 7077 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7078 if (viewRootImpl != null && viewRootImpl.mView != null) { 7079 viewRootImpl.getAccessibilityInteractionController() 7080 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 7081 interactionId, callback, flags, interrogatingPid, interrogatingTid); 7082 } else { 7083 // We cannot make the call and notify the caller so it does not wait. 7084 try { 7085 callback.setPerformAccessibilityActionResult(false, interactionId); 7086 } catch (RemoteException re) { 7087 /* best effort - ignore */ 7088 } 7089 } 7090 } 7091 7092 @Override 7093 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 7094 String viewId, Region interactiveRegion, int interactionId, 7095 IAccessibilityInteractionConnectionCallback callback, int flags, 7096 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7097 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7098 if (viewRootImpl != null && viewRootImpl.mView != null) { 7099 viewRootImpl.getAccessibilityInteractionController() 7100 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 7101 viewId, interactiveRegion, interactionId, callback, flags, 7102 interrogatingPid, interrogatingTid, spec); 7103 } else { 7104 // We cannot make the call and notify the caller so it does not wait. 7105 try { 7106 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7107 } catch (RemoteException re) { 7108 /* best effort - ignore */ 7109 } 7110 } 7111 } 7112 7113 @Override 7114 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 7115 Region interactiveRegion, int interactionId, 7116 IAccessibilityInteractionConnectionCallback callback, int flags, 7117 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7118 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7119 if (viewRootImpl != null && viewRootImpl.mView != null) { 7120 viewRootImpl.getAccessibilityInteractionController() 7121 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 7122 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7123 interrogatingTid, spec); 7124 } else { 7125 // We cannot make the call and notify the caller so it does not wait. 7126 try { 7127 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7128 } catch (RemoteException re) { 7129 /* best effort - ignore */ 7130 } 7131 } 7132 } 7133 7134 @Override 7135 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 7136 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7137 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7138 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7139 if (viewRootImpl != null && viewRootImpl.mView != null) { 7140 viewRootImpl.getAccessibilityInteractionController() 7141 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 7142 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7143 spec); 7144 } else { 7145 // We cannot make the call and notify the caller so it does not wait. 7146 try { 7147 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7148 } catch (RemoteException re) { 7149 /* best effort - ignore */ 7150 } 7151 } 7152 } 7153 7154 @Override 7155 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 7156 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7157 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7158 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7159 if (viewRootImpl != null && viewRootImpl.mView != null) { 7160 viewRootImpl.getAccessibilityInteractionController() 7161 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 7162 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7163 spec); 7164 } else { 7165 // We cannot make the call and notify the caller so it does not wait. 7166 try { 7167 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7168 } catch (RemoteException re) { 7169 /* best effort - ignore */ 7170 } 7171 } 7172 } 7173 } 7174 7175 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 7176 private int mChangeTypes = 0; 7177 7178 public View mSource; 7179 public long mLastEventTimeMillis; 7180 7181 @Override 7182 public void run() { 7183 // The accessibility may be turned off while we were waiting so check again. 7184 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 7185 mLastEventTimeMillis = SystemClock.uptimeMillis(); 7186 AccessibilityEvent event = AccessibilityEvent.obtain(); 7187 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 7188 event.setContentChangeTypes(mChangeTypes); 7189 mSource.sendAccessibilityEventUnchecked(event); 7190 } else { 7191 mLastEventTimeMillis = 0; 7192 } 7193 // In any case reset to initial state. 7194 mSource.resetSubtreeAccessibilityStateChanged(); 7195 mSource = null; 7196 mChangeTypes = 0; 7197 } 7198 7199 public void runOrPost(View source, int changeType) { 7200 if (mSource != null) { 7201 // If there is no common predecessor, then mSource points to 7202 // a removed view, hence in this case always prefer the source. 7203 View predecessor = getCommonPredecessor(mSource, source); 7204 mSource = (predecessor != null) ? predecessor : source; 7205 mChangeTypes |= changeType; 7206 return; 7207 } 7208 mSource = source; 7209 mChangeTypes = changeType; 7210 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 7211 final long minEventIntevalMillis = 7212 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 7213 if (timeSinceLastMillis >= minEventIntevalMillis) { 7214 mSource.removeCallbacks(this); 7215 run(); 7216 } else { 7217 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 7218 } 7219 } 7220 } 7221} 7222