ViewRootImpl.java revision 0e7ae4efe8f424fa1ced8f7e5f3d8ae78066592b
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.Context; 25import android.content.pm.PackageManager; 26import android.content.res.CompatibilityInfo; 27import android.content.res.Configuration; 28import android.content.res.Resources; 29import android.graphics.Canvas; 30import android.graphics.Matrix; 31import android.graphics.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.hardware.display.DisplayManager; 40import android.hardware.display.DisplayManager.DisplayListener; 41import android.media.AudioManager; 42import android.os.Binder; 43import android.os.Build; 44import android.os.Bundle; 45import android.os.Debug; 46import android.os.Handler; 47import android.os.Looper; 48import android.os.Message; 49import android.os.ParcelFileDescriptor; 50import android.os.Process; 51import android.os.RemoteException; 52import android.os.SystemClock; 53import android.os.SystemProperties; 54import android.os.Trace; 55import android.util.AndroidRuntimeException; 56import android.util.DisplayMetrics; 57import android.util.Log; 58import android.util.Slog; 59import android.util.TypedValue; 60import android.view.Surface.OutOfResourcesException; 61import android.view.View.AttachInfo; 62import android.view.View.MeasureSpec; 63import android.view.accessibility.AccessibilityEvent; 64import android.view.accessibility.AccessibilityManager; 65import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 66import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 67import android.view.accessibility.AccessibilityNodeInfo; 68import android.view.accessibility.AccessibilityNodeProvider; 69import android.view.accessibility.IAccessibilityInteractionConnection; 70import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 71import android.view.animation.AccelerateDecelerateInterpolator; 72import android.view.animation.Interpolator; 73import android.view.inputmethod.InputConnection; 74import android.view.inputmethod.InputMethodManager; 75import android.widget.Scroller; 76 77import com.android.internal.R; 78import com.android.internal.os.SomeArgs; 79import com.android.internal.policy.PolicyManager; 80import com.android.internal.view.BaseSurfaceHolder; 81import com.android.internal.view.RootViewSurfaceTaker; 82 83import java.io.FileDescriptor; 84import java.io.IOException; 85import java.io.OutputStream; 86import java.io.PrintWriter; 87import java.lang.ref.WeakReference; 88import java.util.ArrayList; 89import java.util.HashSet; 90 91/** 92 * The top of a view hierarchy, implementing the needed protocol between View 93 * and the WindowManager. This is for the most part an internal implementation 94 * detail of {@link WindowManagerGlobal}. 95 * 96 * {@hide} 97 */ 98@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 99public final class ViewRootImpl implements ViewParent, 100 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 101 private static final String TAG = "ViewRootImpl"; 102 private static final boolean DBG = false; 103 private static final boolean LOCAL_LOGV = false; 104 /** @noinspection PointlessBooleanExpression*/ 105 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 106 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 107 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 108 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 109 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 110 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 111 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 112 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 113 private static final boolean DEBUG_FPS = false; 114 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 115 116 /** 117 * Set this system property to true to force the view hierarchy to render 118 * at 60 Hz. This can be used to measure the potential framerate. 119 */ 120 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 121 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 122 123 // property used by emulator to determine display shape 124 public static final String PROPERTY_EMULATOR_CIRCULAR = "ro.emulator.circular"; 125 126 /** 127 * Maximum time we allow the user to roll the trackball enough to generate 128 * a key event, before resetting the counters. 129 */ 130 static final int MAX_TRACKBALL_DELAY = 250; 131 132 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 133 134 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 135 static boolean sFirstDrawComplete = false; 136 137 static final ArrayList<ComponentCallbacks> sConfigCallbacks 138 = new ArrayList<ComponentCallbacks>(); 139 140 final Context mContext; 141 final IWindowSession mWindowSession; 142 final Display mDisplay; 143 final DisplayManager mDisplayManager; 144 final String mBasePackageName; 145 146 final int[] mTmpLocation = new int[2]; 147 148 final TypedValue mTmpValue = new TypedValue(); 149 150 final Thread mThread; 151 152 final WindowLeaked mLocation; 153 154 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 155 156 final W mWindow; 157 158 final int mTargetSdkVersion; 159 160 int mSeq; 161 162 View mView; 163 164 View mAccessibilityFocusedHost; 165 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 166 167 int mViewVisibility; 168 boolean mAppVisible = true; 169 int mOrigWindowType = -1; 170 171 // Set to true if the owner of this window is in the stopped state, 172 // so the window should no longer be active. 173 boolean mStopped = false; 174 175 boolean mLastInCompatMode = false; 176 177 SurfaceHolder.Callback2 mSurfaceHolderCallback; 178 BaseSurfaceHolder mSurfaceHolder; 179 boolean mIsCreating; 180 boolean mDrawingAllowed; 181 182 final Region mTransparentRegion; 183 final Region mPreviousTransparentRegion; 184 185 int mWidth; 186 int mHeight; 187 Rect mDirty; 188 boolean mIsAnimating; 189 190 CompatibilityInfo.Translator mTranslator; 191 192 final View.AttachInfo mAttachInfo; 193 InputChannel mInputChannel; 194 InputQueue.Callback mInputQueueCallback; 195 InputQueue mInputQueue; 196 FallbackEventHandler mFallbackEventHandler; 197 Choreographer mChoreographer; 198 199 final Rect mTempRect; // used in the transaction to not thrash the heap. 200 final Rect mVisRect; // used to retrieve visible rect of focused view. 201 202 boolean mTraversalScheduled; 203 int mTraversalBarrier; 204 boolean mWillDrawSoon; 205 /** Set to true while in performTraversals for detecting when die(true) is called from internal 206 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 207 boolean mIsInTraversal; 208 boolean mApplyInsetsRequested; 209 boolean mLayoutRequested; 210 boolean mFirst; 211 boolean mReportNextDraw; 212 boolean mFullRedrawNeeded; 213 boolean mNewSurfaceNeeded; 214 boolean mHasHadWindowFocus; 215 boolean mLastWasImTarget; 216 boolean mWindowsAnimating; 217 boolean mDrawDuringWindowsAnimating; 218 boolean mIsDrawing; 219 int mLastSystemUiVisibility; 220 int mClientWindowLayoutFlags; 221 boolean mLastOverscanRequested; 222 223 // Pool of queued input events. 224 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 225 private QueuedInputEvent mQueuedInputEventPool; 226 private int mQueuedInputEventPoolSize; 227 228 /* Input event queue. 229 * Pending input events are input events waiting to be delivered to the input stages 230 * and handled by the application. 231 */ 232 QueuedInputEvent mPendingInputEventHead; 233 QueuedInputEvent mPendingInputEventTail; 234 int mPendingInputEventCount; 235 boolean mProcessInputEventsScheduled; 236 boolean mUnbufferedInputDispatch; 237 String mPendingInputEventQueueLengthCounterName = "pq"; 238 239 InputStage mFirstInputStage; 240 InputStage mFirstPostImeInputStage; 241 InputStage mSyntheticInputStage; 242 243 boolean mWindowAttributesChanged = false; 244 int mWindowAttributesChangesFlag = 0; 245 246 // These can be accessed by any thread, must be protected with a lock. 247 // Surface can never be reassigned or cleared (use Surface.clear()). 248 private final Surface mSurface = new Surface(); 249 250 boolean mAdded; 251 boolean mAddedTouchMode; 252 253 final DisplayAdjustments mDisplayAdjustments; 254 255 // These are accessed by multiple threads. 256 final Rect mWinFrame; // frame given by window manager. 257 258 final Rect mPendingOverscanInsets = new Rect(); 259 final Rect mPendingVisibleInsets = new Rect(); 260 final Rect mPendingStableInsets = new Rect(); 261 final Rect mPendingContentInsets = new Rect(); 262 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 263 = new ViewTreeObserver.InternalInsetsInfo(); 264 265 final Rect mDispatchContentInsets = new Rect(); 266 final Rect mDispatchStableInsets = new Rect(); 267 268 final Configuration mLastConfiguration = new Configuration(); 269 final Configuration mPendingConfiguration = new Configuration(); 270 271 boolean mScrollMayChange; 272 int mSoftInputMode; 273 WeakReference<View> mLastScrolledFocus; 274 int mScrollY; 275 int mCurScrollY; 276 Scroller mScroller; 277 HardwareLayer mResizeBuffer; 278 long mResizeBufferStartTime; 279 int mResizeBufferDuration; 280 // Used to block the creation of the ResizeBuffer due to invalidations in 281 // the previous DisplayList tree that must prevent re-execution. 282 // Currently this means a functor was detached. 283 boolean mBlockResizeBuffer; 284 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 285 private ArrayList<LayoutTransition> mPendingTransitions; 286 287 final ViewConfiguration mViewConfiguration; 288 289 /* Drag/drop */ 290 ClipDescription mDragDescription; 291 View mCurrentDragView; 292 volatile Object mLocalDragState; 293 final PointF mDragPoint = new PointF(); 294 final PointF mLastTouchPoint = new PointF(); 295 296 private boolean mProfileRendering; 297 private Choreographer.FrameCallback mRenderProfiler; 298 private boolean mRenderProfilingEnabled; 299 300 private boolean mMediaDisabled; 301 302 // Variables to track frames per second, enabled via DEBUG_FPS flag 303 private long mFpsStartTime = -1; 304 private long mFpsPrevTime = -1; 305 private int mFpsNumFrames; 306 307 /** 308 * see {@link #playSoundEffect(int)} 309 */ 310 AudioManager mAudioManager; 311 312 final AccessibilityManager mAccessibilityManager; 313 314 AccessibilityInteractionController mAccessibilityInteractionController; 315 316 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 317 HighContrastTextManager mHighContrastTextManager; 318 319 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 320 321 HashSet<View> mTempHashSet; 322 323 private final int mDensity; 324 private final int mNoncompatDensity; 325 326 private boolean mInLayout = false; 327 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 328 boolean mHandlingLayoutInLayoutRequest = false; 329 330 private int mViewLayoutDirectionInitial; 331 332 /** Set to true once doDie() has been called. */ 333 private boolean mRemoved; 334 335 private boolean mIsEmulator; 336 private boolean mIsCircularEmulator; 337 private final boolean mWindowIsRound; 338 339 /** 340 * Consistency verifier for debugging purposes. 341 */ 342 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 343 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 344 new InputEventConsistencyVerifier(this, 0) : null; 345 346 static final class SystemUiVisibilityInfo { 347 int seq; 348 int globalVisibility; 349 int localValue; 350 int localChanges; 351 } 352 353 public ViewRootImpl(Context context, Display display) { 354 mContext = context; 355 mWindowSession = WindowManagerGlobal.getWindowSession(); 356 mDisplay = display; 357 mBasePackageName = context.getBasePackageName(); 358 359 mDisplayAdjustments = display.getDisplayAdjustments(); 360 361 mThread = Thread.currentThread(); 362 mLocation = new WindowLeaked(null); 363 mLocation.fillInStackTrace(); 364 mWidth = -1; 365 mHeight = -1; 366 mDirty = new Rect(); 367 mTempRect = new Rect(); 368 mVisRect = new Rect(); 369 mWinFrame = new Rect(); 370 mWindow = new W(this); 371 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 372 mViewVisibility = View.GONE; 373 mTransparentRegion = new Region(); 374 mPreviousTransparentRegion = new Region(); 375 mFirst = true; // true for the first time the view is added 376 mAdded = false; 377 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 378 mAccessibilityManager = AccessibilityManager.getInstance(context); 379 mAccessibilityInteractionConnectionManager = 380 new AccessibilityInteractionConnectionManager(); 381 mAccessibilityManager.addAccessibilityStateChangeListener( 382 mAccessibilityInteractionConnectionManager); 383 mHighContrastTextManager = new HighContrastTextManager(); 384 mAccessibilityManager.addHighTextContrastStateChangeListener( 385 mHighContrastTextManager); 386 mViewConfiguration = ViewConfiguration.get(context); 387 mDensity = context.getResources().getDisplayMetrics().densityDpi; 388 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 389 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 390 mChoreographer = Choreographer.getInstance(); 391 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 392 loadSystemProperties(); 393 mWindowIsRound = context.getResources().getBoolean( 394 com.android.internal.R.bool.config_windowIsRound); 395 } 396 397 public static void addFirstDrawHandler(Runnable callback) { 398 synchronized (sFirstDrawHandlers) { 399 if (!sFirstDrawComplete) { 400 sFirstDrawHandlers.add(callback); 401 } 402 } 403 } 404 405 public static void addConfigCallback(ComponentCallbacks callback) { 406 synchronized (sConfigCallbacks) { 407 sConfigCallbacks.add(callback); 408 } 409 } 410 411 // FIXME for perf testing only 412 private boolean mProfile = false; 413 414 /** 415 * Call this to profile the next traversal call. 416 * FIXME for perf testing only. Remove eventually 417 */ 418 public void profile() { 419 mProfile = true; 420 } 421 422 /** 423 * Indicates whether we are in touch mode. Calling this method triggers an IPC 424 * call and should be avoided whenever possible. 425 * 426 * @return True, if the device is in touch mode, false otherwise. 427 * 428 * @hide 429 */ 430 static boolean isInTouchMode() { 431 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 432 if (windowSession != null) { 433 try { 434 return windowSession.getInTouchMode(); 435 } catch (RemoteException e) { 436 } 437 } 438 return false; 439 } 440 441 /** 442 * We have one child 443 */ 444 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 445 synchronized (this) { 446 if (mView == null) { 447 mView = view; 448 449 mAttachInfo.mDisplayState = mDisplay.getState(); 450 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 451 452 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 453 mFallbackEventHandler.setView(view); 454 mWindowAttributes.copyFrom(attrs); 455 if (mWindowAttributes.packageName == null) { 456 mWindowAttributes.packageName = mBasePackageName; 457 } 458 attrs = mWindowAttributes; 459 // Keep track of the actual window flags supplied by the client. 460 mClientWindowLayoutFlags = attrs.flags; 461 462 setAccessibilityFocus(null, null); 463 464 if (view instanceof RootViewSurfaceTaker) { 465 mSurfaceHolderCallback = 466 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 467 if (mSurfaceHolderCallback != null) { 468 mSurfaceHolder = new TakenSurfaceHolder(); 469 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 470 } 471 } 472 473 // Compute surface insets required to draw at specified Z value. 474 // TODO: Use real shadow insets for a constant max Z. 475 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 476 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 477 478 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 479 mTranslator = compatibilityInfo.getTranslator(); 480 mDisplayAdjustments.setActivityToken(attrs.token); 481 482 // If the application owns the surface, don't enable hardware acceleration 483 if (mSurfaceHolder == null) { 484 enableHardwareAcceleration(attrs); 485 } 486 487 boolean restore = false; 488 if (mTranslator != null) { 489 mSurface.setCompatibilityTranslator(mTranslator); 490 restore = true; 491 attrs.backup(); 492 mTranslator.translateWindowLayout(attrs); 493 } 494 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 495 496 if (!compatibilityInfo.supportsScreen()) { 497 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 498 mLastInCompatMode = true; 499 } 500 501 mSoftInputMode = attrs.softInputMode; 502 mWindowAttributesChanged = true; 503 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 504 mAttachInfo.mRootView = view; 505 mAttachInfo.mScalingRequired = mTranslator != null; 506 mAttachInfo.mApplicationScale = 507 mTranslator == null ? 1.0f : mTranslator.applicationScale; 508 if (panelParentView != null) { 509 mAttachInfo.mPanelParentWindowToken 510 = panelParentView.getApplicationWindowToken(); 511 } 512 mAdded = true; 513 int res; /* = WindowManagerImpl.ADD_OKAY; */ 514 515 // Schedule the first layout -before- adding to the window 516 // manager, to make sure we do the relayout before receiving 517 // any other events from the system. 518 requestLayout(); 519 if ((mWindowAttributes.inputFeatures 520 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 521 mInputChannel = new InputChannel(); 522 } 523 try { 524 mOrigWindowType = mWindowAttributes.type; 525 mAttachInfo.mRecomputeGlobalAttributes = true; 526 collectViewAttributes(); 527 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 528 getHostVisibility(), mDisplay.getDisplayId(), 529 mAttachInfo.mContentInsets, mInputChannel); 530 } catch (RemoteException e) { 531 mAdded = false; 532 mView = null; 533 mAttachInfo.mRootView = null; 534 mInputChannel = null; 535 mFallbackEventHandler.setView(null); 536 unscheduleTraversals(); 537 setAccessibilityFocus(null, null); 538 throw new RuntimeException("Adding window failed", e); 539 } finally { 540 if (restore) { 541 attrs.restore(); 542 } 543 } 544 545 if (mTranslator != null) { 546 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 547 } 548 mPendingOverscanInsets.set(0, 0, 0, 0); 549 mPendingContentInsets.set(mAttachInfo.mContentInsets); 550 mPendingStableInsets.set(mAttachInfo.mStableInsets); 551 mPendingVisibleInsets.set(0, 0, 0, 0); 552 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 553 if (res < WindowManagerGlobal.ADD_OKAY) { 554 mAttachInfo.mRootView = null; 555 mAdded = false; 556 mFallbackEventHandler.setView(null); 557 unscheduleTraversals(); 558 setAccessibilityFocus(null, null); 559 switch (res) { 560 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 561 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 562 throw new WindowManager.BadTokenException( 563 "Unable to add window -- token " + attrs.token 564 + " is not valid; is your activity running?"); 565 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 566 throw new WindowManager.BadTokenException( 567 "Unable to add window -- token " + attrs.token 568 + " is not for an application"); 569 case WindowManagerGlobal.ADD_APP_EXITING: 570 throw new WindowManager.BadTokenException( 571 "Unable to add window -- app for token " + attrs.token 572 + " is exiting"); 573 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 574 throw new WindowManager.BadTokenException( 575 "Unable to add window -- window " + mWindow 576 + " has already been added"); 577 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 578 // Silently ignore -- we would have just removed it 579 // right away, anyway. 580 return; 581 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 582 throw new WindowManager.BadTokenException( 583 "Unable to add window " + mWindow + 584 " -- another window of this type already exists"); 585 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 586 throw new WindowManager.BadTokenException( 587 "Unable to add window " + mWindow + 588 " -- permission denied for this window type"); 589 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 590 throw new WindowManager.InvalidDisplayException( 591 "Unable to add window " + mWindow + 592 " -- the specified display can not be found"); 593 } 594 throw new RuntimeException( 595 "Unable to add window -- unknown error code " + res); 596 } 597 598 if (view instanceof RootViewSurfaceTaker) { 599 mInputQueueCallback = 600 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 601 } 602 if (mInputChannel != null) { 603 if (mInputQueueCallback != null) { 604 mInputQueue = new InputQueue(); 605 mInputQueueCallback.onInputQueueCreated(mInputQueue); 606 } 607 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 608 Looper.myLooper()); 609 } 610 611 view.assignParent(this); 612 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 613 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 614 615 if (mAccessibilityManager.isEnabled()) { 616 mAccessibilityInteractionConnectionManager.ensureConnection(); 617 } 618 619 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 620 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 621 } 622 623 // Set up the input pipeline. 624 CharSequence counterSuffix = attrs.getTitle(); 625 mSyntheticInputStage = new SyntheticInputStage(); 626 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 627 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 628 "aq:native-post-ime:" + counterSuffix); 629 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 630 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 631 "aq:ime:" + counterSuffix); 632 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 633 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 634 "aq:native-pre-ime:" + counterSuffix); 635 636 mFirstInputStage = nativePreImeStage; 637 mFirstPostImeInputStage = earlyPostImeStage; 638 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 639 } 640 } 641 } 642 643 /** Whether the window is in local focus mode or not */ 644 private boolean isInLocalFocusMode() { 645 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 646 } 647 648 void destroyHardwareResources() { 649 if (mAttachInfo.mHardwareRenderer != null) { 650 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 651 mAttachInfo.mHardwareRenderer.destroy(); 652 } 653 } 654 655 public void detachFunctor(long functor) { 656 // TODO: Make the resize buffer some other way to not need this block 657 mBlockResizeBuffer = true; 658 if (mAttachInfo.mHardwareRenderer != null) { 659 // Fence so that any pending invokeFunctor() messages will be processed 660 // before we return from detachFunctor. 661 mAttachInfo.mHardwareRenderer.stopDrawing(); 662 } 663 } 664 665 /** 666 * Schedules the functor for execution in either kModeProcess or 667 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 668 * 669 * @param functor The native functor to invoke 670 * @param waitForCompletion If true, this will not return until the functor 671 * has invoked. If false, the functor may be invoked 672 * asynchronously. 673 */ 674 public void invokeFunctor(long functor, boolean waitForCompletion) { 675 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 676 } 677 678 public void registerAnimatingRenderNode(RenderNode animator) { 679 if (mAttachInfo.mHardwareRenderer != null) { 680 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 681 } else { 682 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 683 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 684 } 685 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 686 } 687 } 688 689 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 690 mAttachInfo.mHardwareAccelerated = false; 691 mAttachInfo.mHardwareAccelerationRequested = false; 692 693 // Don't enable hardware acceleration when the application is in compatibility mode 694 if (mTranslator != null) return; 695 696 // Try to enable hardware acceleration if requested 697 final boolean hardwareAccelerated = 698 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 699 700 if (hardwareAccelerated) { 701 if (!HardwareRenderer.isAvailable()) { 702 return; 703 } 704 705 // Persistent processes (including the system) should not do 706 // accelerated rendering on low-end devices. In that case, 707 // sRendererDisabled will be set. In addition, the system process 708 // itself should never do accelerated rendering. In that case, both 709 // sRendererDisabled and sSystemRendererDisabled are set. When 710 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 711 // can be used by code on the system process to escape that and enable 712 // HW accelerated drawing. (This is basically for the lock screen.) 713 714 final boolean fakeHwAccelerated = (attrs.privateFlags & 715 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 716 final boolean forceHwAccelerated = (attrs.privateFlags & 717 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 718 719 if (fakeHwAccelerated) { 720 // This is exclusively for the preview windows the window manager 721 // shows for launching applications, so they will look more like 722 // the app being launched. 723 mAttachInfo.mHardwareAccelerationRequested = true; 724 } else if (!HardwareRenderer.sRendererDisabled 725 || (HardwareRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 726 if (mAttachInfo.mHardwareRenderer != null) { 727 mAttachInfo.mHardwareRenderer.destroy(); 728 } 729 730 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 731 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(mContext, translucent); 732 if (mAttachInfo.mHardwareRenderer != null) { 733 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 734 mAttachInfo.mHardwareAccelerated = 735 mAttachInfo.mHardwareAccelerationRequested = true; 736 } 737 } 738 } 739 } 740 741 public View getView() { 742 return mView; 743 } 744 745 final WindowLeaked getLocation() { 746 return mLocation; 747 } 748 749 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 750 synchronized (this) { 751 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 752 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 753 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 754 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 755 final int oldSoftInputMode = mWindowAttributes.softInputMode; 756 757 // Keep track of the actual window flags supplied by the client. 758 mClientWindowLayoutFlags = attrs.flags; 759 760 // Preserve compatible window flag if exists. 761 final int compatibleWindowFlag = mWindowAttributes.privateFlags 762 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 763 764 // Transfer over system UI visibility values as they carry current state. 765 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 766 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 767 768 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 769 if ((mWindowAttributesChangesFlag 770 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 771 // Recompute system ui visibility. 772 mAttachInfo.mRecomputeGlobalAttributes = true; 773 } 774 if (mWindowAttributes.packageName == null) { 775 mWindowAttributes.packageName = mBasePackageName; 776 } 777 mWindowAttributes.privateFlags |= compatibleWindowFlag; 778 779 // Restore old surface insets. 780 mWindowAttributes.surfaceInsets.set( 781 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 782 783 applyKeepScreenOnFlag(mWindowAttributes); 784 785 if (newView) { 786 mSoftInputMode = attrs.softInputMode; 787 requestLayout(); 788 } 789 790 // Don't lose the mode we last auto-computed. 791 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 792 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 793 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 794 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 795 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 796 } 797 798 mWindowAttributesChanged = true; 799 scheduleTraversals(); 800 } 801 } 802 803 void handleAppVisibility(boolean visible) { 804 if (mAppVisible != visible) { 805 mAppVisible = visible; 806 scheduleTraversals(); 807 if (!mAppVisible) { 808 WindowManagerGlobal.trimForeground(); 809 } 810 } 811 } 812 813 void handleGetNewSurface() { 814 mNewSurfaceNeeded = true; 815 mFullRedrawNeeded = true; 816 scheduleTraversals(); 817 } 818 819 private final DisplayListener mDisplayListener = new DisplayListener() { 820 @Override 821 public void onDisplayChanged(int displayId) { 822 if (mView != null && mDisplay.getDisplayId() == displayId) { 823 final int oldDisplayState = mAttachInfo.mDisplayState; 824 final int newDisplayState = mDisplay.getState(); 825 if (oldDisplayState != newDisplayState) { 826 mAttachInfo.mDisplayState = newDisplayState; 827 if (oldDisplayState != Display.STATE_UNKNOWN) { 828 final int oldScreenState = toViewScreenState(oldDisplayState); 829 final int newScreenState = toViewScreenState(newDisplayState); 830 if (oldScreenState != newScreenState) { 831 mView.dispatchScreenStateChanged(newScreenState); 832 } 833 if (oldDisplayState == Display.STATE_OFF) { 834 // Draw was suppressed so we need to for it to happen here. 835 mFullRedrawNeeded = true; 836 scheduleTraversals(); 837 } 838 } 839 } 840 } 841 } 842 843 @Override 844 public void onDisplayRemoved(int displayId) { 845 } 846 847 @Override 848 public void onDisplayAdded(int displayId) { 849 } 850 851 private int toViewScreenState(int displayState) { 852 return displayState == Display.STATE_OFF ? 853 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 854 } 855 }; 856 857 @Override 858 public void requestFitSystemWindows() { 859 checkThread(); 860 mApplyInsetsRequested = true; 861 scheduleTraversals(); 862 } 863 864 @Override 865 public void requestLayout() { 866 if (!mHandlingLayoutInLayoutRequest) { 867 checkThread(); 868 mLayoutRequested = true; 869 scheduleTraversals(); 870 } 871 } 872 873 @Override 874 public boolean isLayoutRequested() { 875 return mLayoutRequested; 876 } 877 878 void invalidate() { 879 mDirty.set(0, 0, mWidth, mHeight); 880 if (!mWillDrawSoon) { 881 scheduleTraversals(); 882 } 883 } 884 885 void invalidateWorld(View view) { 886 view.invalidate(); 887 if (view instanceof ViewGroup) { 888 ViewGroup parent = (ViewGroup) view; 889 for (int i = 0; i < parent.getChildCount(); i++) { 890 invalidateWorld(parent.getChildAt(i)); 891 } 892 } 893 } 894 895 @Override 896 public void invalidateChild(View child, Rect dirty) { 897 invalidateChildInParent(null, dirty); 898 } 899 900 @Override 901 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 902 checkThread(); 903 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 904 905 if (dirty == null) { 906 invalidate(); 907 return null; 908 } else if (dirty.isEmpty() && !mIsAnimating) { 909 return null; 910 } 911 912 if (mCurScrollY != 0 || mTranslator != null) { 913 mTempRect.set(dirty); 914 dirty = mTempRect; 915 if (mCurScrollY != 0) { 916 dirty.offset(0, -mCurScrollY); 917 } 918 if (mTranslator != null) { 919 mTranslator.translateRectInAppWindowToScreen(dirty); 920 } 921 if (mAttachInfo.mScalingRequired) { 922 dirty.inset(-1, -1); 923 } 924 } 925 926 final Rect localDirty = mDirty; 927 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 928 mAttachInfo.mSetIgnoreDirtyState = true; 929 mAttachInfo.mIgnoreDirtyState = true; 930 } 931 932 // Add the new dirty rect to the current one 933 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 934 // Intersect with the bounds of the window to skip 935 // updates that lie outside of the visible region 936 final float appScale = mAttachInfo.mApplicationScale; 937 final boolean intersected = localDirty.intersect(0, 0, 938 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 939 if (!intersected) { 940 localDirty.setEmpty(); 941 } 942 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 943 scheduleTraversals(); 944 } 945 946 return null; 947 } 948 949 void setStopped(boolean stopped) { 950 if (mStopped != stopped) { 951 mStopped = stopped; 952 if (!stopped) { 953 scheduleTraversals(); 954 } 955 } 956 } 957 958 @Override 959 public ViewParent getParent() { 960 return null; 961 } 962 963 @Override 964 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 965 if (child != mView) { 966 throw new RuntimeException("child is not mine, honest!"); 967 } 968 // Note: don't apply scroll offset, because we want to know its 969 // visibility in the virtual canvas being given to the view hierarchy. 970 return r.intersect(0, 0, mWidth, mHeight); 971 } 972 973 @Override 974 public void bringChildToFront(View child) { 975 } 976 977 int getHostVisibility() { 978 return mAppVisible ? mView.getVisibility() : View.GONE; 979 } 980 981 void disposeResizeBuffer() { 982 if (mResizeBuffer != null) { 983 mResizeBuffer.destroy(); 984 mResizeBuffer = null; 985 } 986 } 987 988 /** 989 * Add LayoutTransition to the list of transitions to be started in the next traversal. 990 * This list will be cleared after the transitions on the list are start()'ed. These 991 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 992 * happens during the layout phase of traversal, which we want to complete before any of the 993 * animations are started (because those animations may side-effect properties that layout 994 * depends upon, like the bounding rectangles of the affected views). So we add the transition 995 * to the list and it is started just prior to starting the drawing phase of traversal. 996 * 997 * @param transition The LayoutTransition to be started on the next traversal. 998 * 999 * @hide 1000 */ 1001 public void requestTransitionStart(LayoutTransition transition) { 1002 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1003 if (mPendingTransitions == null) { 1004 mPendingTransitions = new ArrayList<LayoutTransition>(); 1005 } 1006 mPendingTransitions.add(transition); 1007 } 1008 } 1009 1010 /** 1011 * Notifies the HardwareRenderer that a new frame will be coming soon. 1012 * Currently only {@link ThreadedRenderer} cares about this, and uses 1013 * this knowledge to adjust the scheduling of off-thread animations 1014 */ 1015 void notifyRendererOfFramePending() { 1016 if (mAttachInfo.mHardwareRenderer != null) { 1017 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1018 } 1019 } 1020 1021 void scheduleTraversals() { 1022 if (!mTraversalScheduled) { 1023 mTraversalScheduled = true; 1024 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 1025 mChoreographer.postCallback( 1026 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1027 if (!mUnbufferedInputDispatch) { 1028 scheduleConsumeBatchedInput(); 1029 } 1030 notifyRendererOfFramePending(); 1031 } 1032 } 1033 1034 void unscheduleTraversals() { 1035 if (mTraversalScheduled) { 1036 mTraversalScheduled = false; 1037 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1038 mChoreographer.removeCallbacks( 1039 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1040 } 1041 } 1042 1043 void doTraversal() { 1044 if (mTraversalScheduled) { 1045 mTraversalScheduled = false; 1046 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1047 1048 if (mProfile) { 1049 Debug.startMethodTracing("ViewAncestor"); 1050 } 1051 1052 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 1053 try { 1054 performTraversals(); 1055 } finally { 1056 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1057 } 1058 1059 if (mProfile) { 1060 Debug.stopMethodTracing(); 1061 mProfile = false; 1062 } 1063 } 1064 } 1065 1066 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1067 // Update window's global keep screen on flag: if a view has requested 1068 // that the screen be kept on, then it is always set; otherwise, it is 1069 // set to whatever the client last requested for the global state. 1070 if (mAttachInfo.mKeepScreenOn) { 1071 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1072 } else { 1073 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1074 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1075 } 1076 } 1077 1078 private boolean collectViewAttributes() { 1079 if (mAttachInfo.mRecomputeGlobalAttributes) { 1080 //Log.i(TAG, "Computing view hierarchy attributes!"); 1081 mAttachInfo.mRecomputeGlobalAttributes = false; 1082 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1083 mAttachInfo.mKeepScreenOn = false; 1084 mAttachInfo.mSystemUiVisibility = 0; 1085 mAttachInfo.mHasSystemUiListeners = false; 1086 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1087 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1088 WindowManager.LayoutParams params = mWindowAttributes; 1089 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1090 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1091 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1092 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1093 applyKeepScreenOnFlag(params); 1094 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1095 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1096 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1097 return true; 1098 } 1099 } 1100 return false; 1101 } 1102 1103 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1104 int vis = 0; 1105 // Translucent decor window flags imply stable system ui visibility. 1106 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1107 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1108 } 1109 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1110 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1111 } 1112 return vis; 1113 } 1114 1115 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1116 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1117 int childWidthMeasureSpec; 1118 int childHeightMeasureSpec; 1119 boolean windowSizeMayChange = false; 1120 1121 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1122 "Measuring " + host + " in display " + desiredWindowWidth 1123 + "x" + desiredWindowHeight + "..."); 1124 1125 boolean goodMeasure = false; 1126 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1127 // On large screens, we don't want to allow dialogs to just 1128 // stretch to fill the entire width of the screen to display 1129 // one line of text. First try doing the layout at a smaller 1130 // size to see if it will fit. 1131 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1132 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1133 int baseSize = 0; 1134 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1135 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1136 } 1137 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1138 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1139 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1140 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1141 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1142 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1143 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1144 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1145 goodMeasure = true; 1146 } else { 1147 // Didn't fit in that size... try expanding a bit. 1148 baseSize = (baseSize+desiredWindowWidth)/2; 1149 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1150 + baseSize); 1151 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1152 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1153 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1154 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1155 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1156 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1157 goodMeasure = true; 1158 } 1159 } 1160 } 1161 } 1162 1163 if (!goodMeasure) { 1164 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1165 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1166 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1167 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1168 windowSizeMayChange = true; 1169 } 1170 } 1171 1172 if (DBG) { 1173 System.out.println("======================================"); 1174 System.out.println("performTraversals -- after measure"); 1175 host.debug(); 1176 } 1177 1178 return windowSizeMayChange; 1179 } 1180 1181 /** 1182 * Modifies the input matrix such that it maps view-local coordinates to 1183 * on-screen coordinates. 1184 * 1185 * @param m input matrix to modify 1186 */ 1187 void transformMatrixToGlobal(Matrix m) { 1188 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1189 } 1190 1191 /** 1192 * Modifies the input matrix such that it maps on-screen coordinates to 1193 * view-local coordinates. 1194 * 1195 * @param m input matrix to modify 1196 */ 1197 void transformMatrixToLocal(Matrix m) { 1198 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1199 } 1200 1201 void dispatchApplyInsets(View host) { 1202 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1203 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1204 final boolean isRound = (mIsEmulator && mIsCircularEmulator) || mWindowIsRound; 1205 host.dispatchApplyWindowInsets(new WindowInsets( 1206 mDispatchContentInsets, null /* windowDecorInsets */, 1207 mDispatchStableInsets, isRound)); 1208 } 1209 1210 private void performTraversals() { 1211 // cache mView since it is used so much below... 1212 final View host = mView; 1213 1214 if (DBG) { 1215 System.out.println("======================================"); 1216 System.out.println("performTraversals"); 1217 host.debug(); 1218 } 1219 1220 if (host == null || !mAdded) 1221 return; 1222 1223 mIsInTraversal = true; 1224 mWillDrawSoon = true; 1225 boolean windowSizeMayChange = false; 1226 boolean newSurface = false; 1227 boolean surfaceChanged = false; 1228 WindowManager.LayoutParams lp = mWindowAttributes; 1229 1230 int desiredWindowWidth; 1231 int desiredWindowHeight; 1232 1233 final int viewVisibility = getHostVisibility(); 1234 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1235 || mNewSurfaceNeeded; 1236 1237 WindowManager.LayoutParams params = null; 1238 if (mWindowAttributesChanged) { 1239 mWindowAttributesChanged = false; 1240 surfaceChanged = true; 1241 params = lp; 1242 } 1243 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1244 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1245 params = lp; 1246 mFullRedrawNeeded = true; 1247 mLayoutRequested = true; 1248 if (mLastInCompatMode) { 1249 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1250 mLastInCompatMode = false; 1251 } else { 1252 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1253 mLastInCompatMode = true; 1254 } 1255 } 1256 1257 mWindowAttributesChangesFlag = 0; 1258 1259 Rect frame = mWinFrame; 1260 if (mFirst) { 1261 mFullRedrawNeeded = true; 1262 mLayoutRequested = true; 1263 1264 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1265 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1266 // NOTE -- system code, won't try to do compat mode. 1267 Point size = new Point(); 1268 mDisplay.getRealSize(size); 1269 desiredWindowWidth = size.x; 1270 desiredWindowHeight = size.y; 1271 } else { 1272 DisplayMetrics packageMetrics = 1273 mView.getContext().getResources().getDisplayMetrics(); 1274 desiredWindowWidth = packageMetrics.widthPixels; 1275 desiredWindowHeight = packageMetrics.heightPixels; 1276 } 1277 1278 // We used to use the following condition to choose 32 bits drawing caches: 1279 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1280 // However, windows are now always 32 bits by default, so choose 32 bits 1281 mAttachInfo.mUse32BitDrawingCache = true; 1282 mAttachInfo.mHasWindowFocus = false; 1283 mAttachInfo.mWindowVisibility = viewVisibility; 1284 mAttachInfo.mRecomputeGlobalAttributes = false; 1285 viewVisibilityChanged = false; 1286 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1287 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1288 // Set the layout direction if it has not been set before (inherit is the default) 1289 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1290 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1291 } 1292 host.dispatchAttachedToWindow(mAttachInfo, 0); 1293 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1294 dispatchApplyInsets(host); 1295 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1296 1297 } else { 1298 desiredWindowWidth = frame.width(); 1299 desiredWindowHeight = frame.height(); 1300 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1301 if (DEBUG_ORIENTATION) Log.v(TAG, 1302 "View " + host + " resized to: " + frame); 1303 mFullRedrawNeeded = true; 1304 mLayoutRequested = true; 1305 windowSizeMayChange = true; 1306 } 1307 } 1308 1309 if (viewVisibilityChanged) { 1310 mAttachInfo.mWindowVisibility = viewVisibility; 1311 host.dispatchWindowVisibilityChanged(viewVisibility); 1312 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1313 destroyHardwareResources(); 1314 } 1315 if (viewVisibility == View.GONE) { 1316 // After making a window gone, we will count it as being 1317 // shown for the first time the next time it gets focus. 1318 mHasHadWindowFocus = false; 1319 } 1320 } 1321 1322 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1323 getRunQueue().executeActions(mAttachInfo.mHandler); 1324 1325 boolean insetsChanged = false; 1326 1327 boolean layoutRequested = mLayoutRequested && !mStopped; 1328 if (layoutRequested) { 1329 1330 final Resources res = mView.getContext().getResources(); 1331 1332 if (mFirst) { 1333 // make sure touch mode code executes by setting cached value 1334 // to opposite of the added touch mode. 1335 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1336 ensureTouchModeLocally(mAddedTouchMode); 1337 } else { 1338 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1339 insetsChanged = true; 1340 } 1341 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1342 insetsChanged = true; 1343 } 1344 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1345 insetsChanged = true; 1346 } 1347 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1348 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1349 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1350 + mAttachInfo.mVisibleInsets); 1351 } 1352 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1353 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1354 windowSizeMayChange = true; 1355 1356 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1357 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1358 // NOTE -- system code, won't try to do compat mode. 1359 Point size = new Point(); 1360 mDisplay.getRealSize(size); 1361 desiredWindowWidth = size.x; 1362 desiredWindowHeight = size.y; 1363 } else { 1364 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1365 desiredWindowWidth = packageMetrics.widthPixels; 1366 desiredWindowHeight = packageMetrics.heightPixels; 1367 } 1368 } 1369 } 1370 1371 // Ask host how big it wants to be 1372 windowSizeMayChange |= measureHierarchy(host, lp, res, 1373 desiredWindowWidth, desiredWindowHeight); 1374 } 1375 1376 if (collectViewAttributes()) { 1377 params = lp; 1378 } 1379 if (mAttachInfo.mForceReportNewAttributes) { 1380 mAttachInfo.mForceReportNewAttributes = false; 1381 params = lp; 1382 } 1383 1384 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1385 mAttachInfo.mViewVisibilityChanged = false; 1386 int resizeMode = mSoftInputMode & 1387 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1388 // If we are in auto resize mode, then we need to determine 1389 // what mode to use now. 1390 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1391 final int N = mAttachInfo.mScrollContainers.size(); 1392 for (int i=0; i<N; i++) { 1393 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1394 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1395 } 1396 } 1397 if (resizeMode == 0) { 1398 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1399 } 1400 if ((lp.softInputMode & 1401 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1402 lp.softInputMode = (lp.softInputMode & 1403 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1404 resizeMode; 1405 params = lp; 1406 } 1407 } 1408 } 1409 1410 if (params != null) { 1411 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1412 if (!PixelFormat.formatHasAlpha(params.format)) { 1413 params.format = PixelFormat.TRANSLUCENT; 1414 } 1415 } 1416 mAttachInfo.mOverscanRequested = (params.flags 1417 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1418 } 1419 1420 if (mApplyInsetsRequested) { 1421 mApplyInsetsRequested = false; 1422 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1423 dispatchApplyInsets(host); 1424 if (mLayoutRequested) { 1425 // Short-circuit catching a new layout request here, so 1426 // we don't need to go through two layout passes when things 1427 // change due to fitting system windows, which can happen a lot. 1428 windowSizeMayChange |= measureHierarchy(host, lp, 1429 mView.getContext().getResources(), 1430 desiredWindowWidth, desiredWindowHeight); 1431 } 1432 } 1433 1434 if (layoutRequested) { 1435 // Clear this now, so that if anything requests a layout in the 1436 // rest of this function we will catch it and re-run a full 1437 // layout pass. 1438 mLayoutRequested = false; 1439 } 1440 1441 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1442 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1443 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1444 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1445 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1446 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1447 1448 // Determine whether to compute insets. 1449 // If there are no inset listeners remaining then we may still need to compute 1450 // insets in case the old insets were non-empty and must be reset. 1451 final boolean computesInternalInsets = 1452 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1453 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1454 1455 boolean insetsPending = false; 1456 int relayoutResult = 0; 1457 1458 if (mFirst || windowShouldResize || insetsChanged || 1459 viewVisibilityChanged || params != null) { 1460 1461 if (viewVisibility == View.VISIBLE) { 1462 // If this window is giving internal insets to the window 1463 // manager, and it is being added or changing its visibility, 1464 // then we want to first give the window manager "fake" 1465 // insets to cause it to effectively ignore the content of 1466 // the window during layout. This avoids it briefly causing 1467 // other windows to resize/move based on the raw frame of the 1468 // window, waiting until we can finish laying out this window 1469 // and get back to the window manager with the ultimately 1470 // computed insets. 1471 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1472 } 1473 1474 if (mSurfaceHolder != null) { 1475 mSurfaceHolder.mSurfaceLock.lock(); 1476 mDrawingAllowed = true; 1477 } 1478 1479 boolean hwInitialized = false; 1480 boolean contentInsetsChanged = false; 1481 boolean hadSurface = mSurface.isValid(); 1482 1483 try { 1484 if (DEBUG_LAYOUT) { 1485 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1486 host.getMeasuredHeight() + ", params=" + params); 1487 } 1488 1489 if (mAttachInfo.mHardwareRenderer != null) { 1490 // relayoutWindow may decide to destroy mSurface. As that decision 1491 // happens in WindowManager service, we need to be defensive here 1492 // and stop using the surface in case it gets destroyed. 1493 mAttachInfo.mHardwareRenderer.pauseSurface(mSurface); 1494 } 1495 final int surfaceGenerationId = mSurface.getGenerationId(); 1496 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1497 if (!mDrawDuringWindowsAnimating && 1498 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1499 mWindowsAnimating = true; 1500 } 1501 1502 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1503 + " overscan=" + mPendingOverscanInsets.toShortString() 1504 + " content=" + mPendingContentInsets.toShortString() 1505 + " visible=" + mPendingVisibleInsets.toShortString() 1506 + " visible=" + mPendingStableInsets.toShortString() 1507 + " surface=" + mSurface); 1508 1509 if (mPendingConfiguration.seq != 0) { 1510 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1511 + mPendingConfiguration); 1512 updateConfiguration(mPendingConfiguration, !mFirst); 1513 mPendingConfiguration.seq = 0; 1514 } 1515 1516 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1517 mAttachInfo.mOverscanInsets); 1518 contentInsetsChanged = !mPendingContentInsets.equals( 1519 mAttachInfo.mContentInsets); 1520 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1521 mAttachInfo.mVisibleInsets); 1522 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1523 mAttachInfo.mStableInsets); 1524 if (contentInsetsChanged) { 1525 if (mWidth > 0 && mHeight > 0 && lp != null && 1526 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1527 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1528 mSurface != null && mSurface.isValid() && 1529 !mAttachInfo.mTurnOffWindowResizeAnim && 1530 mAttachInfo.mHardwareRenderer != null && 1531 mAttachInfo.mHardwareRenderer.isEnabled() && 1532 lp != null && !PixelFormat.formatHasAlpha(lp.format) 1533 && !mBlockResizeBuffer) { 1534 1535 disposeResizeBuffer(); 1536 1537// TODO: Again.... 1538// if (mResizeBuffer == null) { 1539// mResizeBuffer = mAttachInfo.mHardwareRenderer.createDisplayListLayer( 1540// mWidth, mHeight); 1541// } 1542// mResizeBuffer.prepare(mWidth, mHeight, false); 1543// RenderNode layerRenderNode = mResizeBuffer.startRecording(); 1544// HardwareCanvas layerCanvas = layerRenderNode.start(mWidth, mHeight); 1545// try { 1546// final int restoreCount = layerCanvas.save(); 1547// 1548// int yoff; 1549// final boolean scrolling = mScroller != null 1550// && mScroller.computeScrollOffset(); 1551// if (scrolling) { 1552// yoff = mScroller.getCurrY(); 1553// mScroller.abortAnimation(); 1554// } else { 1555// yoff = mScrollY; 1556// } 1557// 1558// layerCanvas.translate(0, -yoff); 1559// if (mTranslator != null) { 1560// mTranslator.translateCanvas(layerCanvas); 1561// } 1562// 1563// RenderNode renderNode = mView.mRenderNode; 1564// if (renderNode != null && renderNode.isValid()) { 1565// layerCanvas.drawDisplayList(renderNode, null, 1566// RenderNode.FLAG_CLIP_CHILDREN); 1567// } else { 1568// mView.draw(layerCanvas); 1569// } 1570// 1571// drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1572// 1573// mResizeBufferStartTime = SystemClock.uptimeMillis(); 1574// mResizeBufferDuration = mView.getResources().getInteger( 1575// com.android.internal.R.integer.config_mediumAnimTime); 1576// 1577// layerCanvas.restoreToCount(restoreCount); 1578// layerRenderNode.end(layerCanvas); 1579// layerRenderNode.setCaching(true); 1580// layerRenderNode.setLeftTopRightBottom(0, 0, mWidth, mHeight); 1581// mTempRect.set(0, 0, mWidth, mHeight); 1582// } finally { 1583// mResizeBuffer.endRecording(mTempRect); 1584// } 1585// mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 1586 } 1587 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1588 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1589 + mAttachInfo.mContentInsets); 1590 } 1591 if (overscanInsetsChanged) { 1592 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1593 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1594 + mAttachInfo.mOverscanInsets); 1595 // Need to relayout with content insets. 1596 contentInsetsChanged = true; 1597 } 1598 if (stableInsetsChanged) { 1599 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1600 if (DEBUG_LAYOUT) Log.v(TAG, "Decor insets changing to: " 1601 + mAttachInfo.mStableInsets); 1602 // Need to relayout with content insets. 1603 contentInsetsChanged = true; 1604 } 1605 if (contentInsetsChanged || mLastSystemUiVisibility != 1606 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1607 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1608 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1609 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1610 mApplyInsetsRequested = false; 1611 dispatchApplyInsets(host); 1612 } 1613 if (visibleInsetsChanged) { 1614 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1615 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1616 + mAttachInfo.mVisibleInsets); 1617 } 1618 1619 if (!hadSurface) { 1620 if (mSurface.isValid()) { 1621 // If we are creating a new surface, then we need to 1622 // completely redraw it. Also, when we get to the 1623 // point of drawing it we will hold off and schedule 1624 // a new traversal instead. This is so we can tell the 1625 // window manager about all of the windows being displayed 1626 // before actually drawing them, so it can display then 1627 // all at once. 1628 newSurface = true; 1629 mFullRedrawNeeded = true; 1630 mPreviousTransparentRegion.setEmpty(); 1631 1632 if (mAttachInfo.mHardwareRenderer != null) { 1633 try { 1634 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1635 mSurface); 1636 } catch (OutOfResourcesException e) { 1637 handleOutOfResourcesException(e); 1638 return; 1639 } 1640 } 1641 } 1642 } else if (!mSurface.isValid()) { 1643 // If the surface has been removed, then reset the scroll 1644 // positions. 1645 if (mLastScrolledFocus != null) { 1646 mLastScrolledFocus.clear(); 1647 } 1648 mScrollY = mCurScrollY = 0; 1649 if (mView instanceof RootViewSurfaceTaker) { 1650 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1651 } 1652 if (mScroller != null) { 1653 mScroller.abortAnimation(); 1654 } 1655 disposeResizeBuffer(); 1656 // Our surface is gone 1657 if (mAttachInfo.mHardwareRenderer != null && 1658 mAttachInfo.mHardwareRenderer.isEnabled()) { 1659 mAttachInfo.mHardwareRenderer.destroy(); 1660 } 1661 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1662 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1663 mFullRedrawNeeded = true; 1664 try { 1665 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1666 } catch (OutOfResourcesException e) { 1667 handleOutOfResourcesException(e); 1668 return; 1669 } 1670 } 1671 } catch (RemoteException e) { 1672 } 1673 1674 if (DEBUG_ORIENTATION) Log.v( 1675 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1676 1677 mAttachInfo.mWindowLeft = frame.left; 1678 mAttachInfo.mWindowTop = frame.top; 1679 1680 // !!FIXME!! This next section handles the case where we did not get the 1681 // window size we asked for. We should avoid this by getting a maximum size from 1682 // the window session beforehand. 1683 if (mWidth != frame.width() || mHeight != frame.height()) { 1684 mWidth = frame.width(); 1685 mHeight = frame.height(); 1686 } 1687 1688 if (mSurfaceHolder != null) { 1689 // The app owns the surface; tell it about what is going on. 1690 if (mSurface.isValid()) { 1691 // XXX .copyFrom() doesn't work! 1692 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1693 mSurfaceHolder.mSurface = mSurface; 1694 } 1695 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1696 mSurfaceHolder.mSurfaceLock.unlock(); 1697 if (mSurface.isValid()) { 1698 if (!hadSurface) { 1699 mSurfaceHolder.ungetCallbacks(); 1700 1701 mIsCreating = true; 1702 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1703 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1704 if (callbacks != null) { 1705 for (SurfaceHolder.Callback c : callbacks) { 1706 c.surfaceCreated(mSurfaceHolder); 1707 } 1708 } 1709 surfaceChanged = true; 1710 } 1711 if (surfaceChanged) { 1712 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1713 lp.format, mWidth, mHeight); 1714 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1715 if (callbacks != null) { 1716 for (SurfaceHolder.Callback c : callbacks) { 1717 c.surfaceChanged(mSurfaceHolder, lp.format, 1718 mWidth, mHeight); 1719 } 1720 } 1721 } 1722 mIsCreating = false; 1723 } else if (hadSurface) { 1724 mSurfaceHolder.ungetCallbacks(); 1725 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1726 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1727 if (callbacks != null) { 1728 for (SurfaceHolder.Callback c : callbacks) { 1729 c.surfaceDestroyed(mSurfaceHolder); 1730 } 1731 } 1732 mSurfaceHolder.mSurfaceLock.lock(); 1733 try { 1734 mSurfaceHolder.mSurface = new Surface(); 1735 } finally { 1736 mSurfaceHolder.mSurfaceLock.unlock(); 1737 } 1738 } 1739 } 1740 1741 if (mAttachInfo.mHardwareRenderer != null && 1742 mAttachInfo.mHardwareRenderer.isEnabled()) { 1743 if (hwInitialized || 1744 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1745 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1746 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 1747 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight, surfaceInsets); 1748 if (!hwInitialized) { 1749 mAttachInfo.mHardwareRenderer.invalidate(mSurface); 1750 mFullRedrawNeeded = true; 1751 } 1752 } 1753 } 1754 1755 if (!mStopped) { 1756 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1757 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1758 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1759 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1760 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1761 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1762 1763 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1764 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1765 + " mHeight=" + mHeight 1766 + " measuredHeight=" + host.getMeasuredHeight() 1767 + " coveredInsetsChanged=" + contentInsetsChanged); 1768 1769 // Ask host how big it wants to be 1770 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1771 1772 // Implementation of weights from WindowManager.LayoutParams 1773 // We just grow the dimensions as needed and re-measure if 1774 // needs be 1775 int width = host.getMeasuredWidth(); 1776 int height = host.getMeasuredHeight(); 1777 boolean measureAgain = false; 1778 1779 if (lp.horizontalWeight > 0.0f) { 1780 width += (int) ((mWidth - width) * lp.horizontalWeight); 1781 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1782 MeasureSpec.EXACTLY); 1783 measureAgain = true; 1784 } 1785 if (lp.verticalWeight > 0.0f) { 1786 height += (int) ((mHeight - height) * lp.verticalWeight); 1787 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1788 MeasureSpec.EXACTLY); 1789 measureAgain = true; 1790 } 1791 1792 if (measureAgain) { 1793 if (DEBUG_LAYOUT) Log.v(TAG, 1794 "And hey let's measure once more: width=" + width 1795 + " height=" + height); 1796 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1797 } 1798 1799 layoutRequested = true; 1800 } 1801 } 1802 } else { 1803 // Not the first pass and no window/insets/visibility change but the window 1804 // may have moved and we need check that and if so to update the left and right 1805 // in the attach info. We translate only the window frame since on window move 1806 // the window manager tells us only for the new frame but the insets are the 1807 // same and we do not want to translate them more than once. 1808 1809 // TODO: Well, we are checking whether the frame has changed similarly 1810 // to how this is done for the insets. This is however incorrect since 1811 // the insets and the frame are translated. For example, the old frame 1812 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1813 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1814 // true since we are comparing a not translated value to a translated one. 1815 // This scenario is rare but we may want to fix that. 1816 1817 final boolean windowMoved = (mAttachInfo.mWindowLeft != frame.left 1818 || mAttachInfo.mWindowTop != frame.top); 1819 if (windowMoved) { 1820 if (mTranslator != null) { 1821 mTranslator.translateRectInScreenToAppWinFrame(frame); 1822 } 1823 mAttachInfo.mWindowLeft = frame.left; 1824 mAttachInfo.mWindowTop = frame.top; 1825 } 1826 } 1827 1828 final boolean didLayout = layoutRequested && !mStopped; 1829 boolean triggerGlobalLayoutListener = didLayout 1830 || mAttachInfo.mRecomputeGlobalAttributes; 1831 if (didLayout) { 1832 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1833 1834 // By this point all views have been sized and positioned 1835 // We can compute the transparent area 1836 1837 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1838 // start out transparent 1839 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1840 host.getLocationInWindow(mTmpLocation); 1841 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1842 mTmpLocation[0] + host.mRight - host.mLeft, 1843 mTmpLocation[1] + host.mBottom - host.mTop); 1844 1845 host.gatherTransparentRegion(mTransparentRegion); 1846 if (mTranslator != null) { 1847 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1848 } 1849 1850 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1851 mPreviousTransparentRegion.set(mTransparentRegion); 1852 mFullRedrawNeeded = true; 1853 // reconfigure window manager 1854 try { 1855 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1856 } catch (RemoteException e) { 1857 } 1858 } 1859 } 1860 1861 if (DBG) { 1862 System.out.println("======================================"); 1863 System.out.println("performTraversals -- after setFrame"); 1864 host.debug(); 1865 } 1866 } 1867 1868 if (triggerGlobalLayoutListener) { 1869 mAttachInfo.mRecomputeGlobalAttributes = false; 1870 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1871 } 1872 1873 if (computesInternalInsets) { 1874 // Clear the original insets. 1875 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 1876 insets.reset(); 1877 1878 // Compute new insets in place. 1879 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1880 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1881 1882 // Tell the window manager. 1883 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1884 mLastGivenInsets.set(insets); 1885 1886 // Translate insets to screen coordinates if needed. 1887 final Rect contentInsets; 1888 final Rect visibleInsets; 1889 final Region touchableRegion; 1890 if (mTranslator != null) { 1891 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1892 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1893 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1894 } else { 1895 contentInsets = insets.contentInsets; 1896 visibleInsets = insets.visibleInsets; 1897 touchableRegion = insets.touchableRegion; 1898 } 1899 1900 try { 1901 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1902 contentInsets, visibleInsets, touchableRegion); 1903 } catch (RemoteException e) { 1904 } 1905 } 1906 } 1907 1908 boolean skipDraw = false; 1909 1910 if (mFirst) { 1911 // handle first focus request 1912 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1913 + mView.hasFocus()); 1914 if (mView != null) { 1915 if (!mView.hasFocus()) { 1916 mView.requestFocus(View.FOCUS_FORWARD); 1917 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1918 + mView.findFocus()); 1919 } else { 1920 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1921 + mView.findFocus()); 1922 } 1923 } 1924 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1925 // The first time we relayout the window, if the system is 1926 // doing window animations, we want to hold of on any future 1927 // draws until the animation is done. 1928 mWindowsAnimating = true; 1929 } 1930 } else if (mWindowsAnimating) { 1931 skipDraw = true; 1932 } 1933 1934 mFirst = false; 1935 mWillDrawSoon = false; 1936 mNewSurfaceNeeded = false; 1937 mViewVisibility = viewVisibility; 1938 1939 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1940 final boolean imTarget = WindowManager.LayoutParams 1941 .mayUseInputMethod(mWindowAttributes.flags); 1942 if (imTarget != mLastWasImTarget) { 1943 mLastWasImTarget = imTarget; 1944 InputMethodManager imm = InputMethodManager.peekInstance(); 1945 if (imm != null && imTarget) { 1946 imm.startGettingWindowFocus(mView); 1947 imm.onWindowFocus(mView, mView.findFocus(), 1948 mWindowAttributes.softInputMode, 1949 !mHasHadWindowFocus, mWindowAttributes.flags); 1950 } 1951 } 1952 } 1953 1954 // Remember if we must report the next draw. 1955 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1956 mReportNextDraw = true; 1957 } 1958 1959 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || 1960 viewVisibility != View.VISIBLE; 1961 1962 if (!cancelDraw && !newSurface) { 1963 if (!skipDraw || mReportNextDraw) { 1964 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1965 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1966 mPendingTransitions.get(i).startChangingAnimations(); 1967 } 1968 mPendingTransitions.clear(); 1969 } 1970 1971 performDraw(); 1972 } 1973 } else { 1974 if (viewVisibility == View.VISIBLE) { 1975 // Try again 1976 scheduleTraversals(); 1977 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1978 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1979 mPendingTransitions.get(i).endChangingAnimations(); 1980 } 1981 mPendingTransitions.clear(); 1982 } 1983 } 1984 1985 mIsInTraversal = false; 1986 } 1987 1988 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1989 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1990 try { 1991 if (!mWindowSession.outOfMemory(mWindow) && 1992 Process.myUid() != Process.SYSTEM_UID) { 1993 Slog.w(TAG, "No processes killed for memory; killing self"); 1994 Process.killProcess(Process.myPid()); 1995 } 1996 } catch (RemoteException ex) { 1997 } 1998 mLayoutRequested = true; // ask wm for a new surface next time. 1999 } 2000 2001 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2002 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2003 try { 2004 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2005 } finally { 2006 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2007 } 2008 } 2009 2010 /** 2011 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2012 * is currently undergoing a layout pass. 2013 * 2014 * @return whether the view hierarchy is currently undergoing a layout pass 2015 */ 2016 boolean isInLayout() { 2017 return mInLayout; 2018 } 2019 2020 /** 2021 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2022 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2023 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2024 * all children in that container hierarchy are measured and laid out at the end of the layout 2025 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2026 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2027 * we check all of those views to see if any still have pending layout requests, which 2028 * indicates that they were not correctly handled by their container hierarchy. If that is 2029 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2030 * to blank containers, and force a second request/measure/layout pass in this frame. If 2031 * more requestLayout() calls are received during that second layout pass, we post those 2032 * requests to the next frame to avoid possible infinite loops. 2033 * 2034 * <p>The return value from this method indicates whether the request should proceed 2035 * (if it is a request during the first layout pass) or should be skipped and posted to the 2036 * next frame (if it is a request during the second layout pass).</p> 2037 * 2038 * @param view the view that requested the layout. 2039 * 2040 * @return true if request should proceed, false otherwise. 2041 */ 2042 boolean requestLayoutDuringLayout(final View view) { 2043 if (view.mParent == null || view.mAttachInfo == null) { 2044 // Would not normally trigger another layout, so just let it pass through as usual 2045 return true; 2046 } 2047 if (!mLayoutRequesters.contains(view)) { 2048 mLayoutRequesters.add(view); 2049 } 2050 if (!mHandlingLayoutInLayoutRequest) { 2051 // Let the request proceed normally; it will be processed in a second layout pass 2052 // if necessary 2053 return true; 2054 } else { 2055 // Don't let the request proceed during the second layout pass. 2056 // It will post to the next frame instead. 2057 return false; 2058 } 2059 } 2060 2061 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2062 int desiredWindowHeight) { 2063 mLayoutRequested = false; 2064 mScrollMayChange = true; 2065 mInLayout = true; 2066 2067 final View host = mView; 2068 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2069 Log.v(TAG, "Laying out " + host + " to (" + 2070 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2071 } 2072 2073 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2074 try { 2075 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2076 2077 mInLayout = false; 2078 int numViewsRequestingLayout = mLayoutRequesters.size(); 2079 if (numViewsRequestingLayout > 0) { 2080 // requestLayout() was called during layout. 2081 // If no layout-request flags are set on the requesting views, there is no problem. 2082 // If some requests are still pending, then we need to clear those flags and do 2083 // a full request/measure/layout pass to handle this situation. 2084 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2085 false); 2086 if (validLayoutRequesters != null) { 2087 // Set this flag to indicate that any further requests are happening during 2088 // the second pass, which may result in posting those requests to the next 2089 // frame instead 2090 mHandlingLayoutInLayoutRequest = true; 2091 2092 // Process fresh layout requests, then measure and layout 2093 int numValidRequests = validLayoutRequesters.size(); 2094 for (int i = 0; i < numValidRequests; ++i) { 2095 final View view = validLayoutRequesters.get(i); 2096 Log.w("View", "requestLayout() improperly called by " + view + 2097 " during layout: running second layout pass"); 2098 view.requestLayout(); 2099 } 2100 measureHierarchy(host, lp, mView.getContext().getResources(), 2101 desiredWindowWidth, desiredWindowHeight); 2102 mInLayout = true; 2103 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2104 2105 mHandlingLayoutInLayoutRequest = false; 2106 2107 // Check the valid requests again, this time without checking/clearing the 2108 // layout flags, since requests happening during the second pass get noop'd 2109 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2110 if (validLayoutRequesters != null) { 2111 final ArrayList<View> finalRequesters = validLayoutRequesters; 2112 // Post second-pass requests to the next frame 2113 getRunQueue().post(new Runnable() { 2114 @Override 2115 public void run() { 2116 int numValidRequests = finalRequesters.size(); 2117 for (int i = 0; i < numValidRequests; ++i) { 2118 final View view = finalRequesters.get(i); 2119 Log.w("View", "requestLayout() improperly called by " + view + 2120 " during second layout pass: posting in next frame"); 2121 view.requestLayout(); 2122 } 2123 } 2124 }); 2125 } 2126 } 2127 2128 } 2129 } finally { 2130 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2131 } 2132 mInLayout = false; 2133 } 2134 2135 /** 2136 * This method is called during layout when there have been calls to requestLayout() during 2137 * layout. It walks through the list of views that requested layout to determine which ones 2138 * still need it, based on visibility in the hierarchy and whether they have already been 2139 * handled (as is usually the case with ListView children). 2140 * 2141 * @param layoutRequesters The list of views that requested layout during layout 2142 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2143 * If so, the FORCE_LAYOUT flag was not set on requesters. 2144 * @return A list of the actual views that still need to be laid out. 2145 */ 2146 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2147 boolean secondLayoutRequests) { 2148 2149 int numViewsRequestingLayout = layoutRequesters.size(); 2150 ArrayList<View> validLayoutRequesters = null; 2151 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2152 View view = layoutRequesters.get(i); 2153 if (view != null && view.mAttachInfo != null && view.mParent != null && 2154 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2155 View.PFLAG_FORCE_LAYOUT)) { 2156 boolean gone = false; 2157 View parent = view; 2158 // Only trigger new requests for views in a non-GONE hierarchy 2159 while (parent != null) { 2160 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2161 gone = true; 2162 break; 2163 } 2164 if (parent.mParent instanceof View) { 2165 parent = (View) parent.mParent; 2166 } else { 2167 parent = null; 2168 } 2169 } 2170 if (!gone) { 2171 if (validLayoutRequesters == null) { 2172 validLayoutRequesters = new ArrayList<View>(); 2173 } 2174 validLayoutRequesters.add(view); 2175 } 2176 } 2177 } 2178 if (!secondLayoutRequests) { 2179 // If we're checking the layout flags, then we need to clean them up also 2180 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2181 View view = layoutRequesters.get(i); 2182 while (view != null && 2183 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2184 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2185 if (view.mParent instanceof View) { 2186 view = (View) view.mParent; 2187 } else { 2188 view = null; 2189 } 2190 } 2191 } 2192 } 2193 layoutRequesters.clear(); 2194 return validLayoutRequesters; 2195 } 2196 2197 @Override 2198 public void requestTransparentRegion(View child) { 2199 // the test below should not fail unless someone is messing with us 2200 checkThread(); 2201 if (mView == child) { 2202 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2203 // Need to make sure we re-evaluate the window attributes next 2204 // time around, to ensure the window has the correct format. 2205 mWindowAttributesChanged = true; 2206 mWindowAttributesChangesFlag = 0; 2207 requestLayout(); 2208 } 2209 } 2210 2211 /** 2212 * Figures out the measure spec for the root view in a window based on it's 2213 * layout params. 2214 * 2215 * @param windowSize 2216 * The available width or height of the window 2217 * 2218 * @param rootDimension 2219 * The layout params for one dimension (width or height) of the 2220 * window. 2221 * 2222 * @return The measure spec to use to measure the root view. 2223 */ 2224 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2225 int measureSpec; 2226 switch (rootDimension) { 2227 2228 case ViewGroup.LayoutParams.MATCH_PARENT: 2229 // Window can't resize. Force root view to be windowSize. 2230 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2231 break; 2232 case ViewGroup.LayoutParams.WRAP_CONTENT: 2233 // Window can resize. Set max size for root view. 2234 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2235 break; 2236 default: 2237 // Window wants to be an exact size. Force root view to be that size. 2238 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2239 break; 2240 } 2241 return measureSpec; 2242 } 2243 2244 int mHardwareXOffset; 2245 int mHardwareYOffset; 2246 int mResizeAlpha; 2247 final Paint mResizePaint = new Paint(); 2248 2249 @Override 2250 public void onHardwarePreDraw(HardwareCanvas canvas) { 2251 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2252 } 2253 2254 @Override 2255 public void onHardwarePostDraw(HardwareCanvas canvas) { 2256 if (mResizeBuffer != null) { 2257 mResizePaint.setAlpha(mResizeAlpha); 2258 canvas.drawHardwareLayer(mResizeBuffer, mHardwareXOffset, mHardwareYOffset, 2259 mResizePaint); 2260 } 2261 } 2262 2263 /** 2264 * @hide 2265 */ 2266 void outputDisplayList(View view) { 2267 RenderNode renderNode = view.getDisplayList(); 2268 if (renderNode != null) { 2269 renderNode.output(); 2270 } 2271 } 2272 2273 /** 2274 * @see #PROPERTY_PROFILE_RENDERING 2275 */ 2276 private void profileRendering(boolean enabled) { 2277 if (mProfileRendering) { 2278 mRenderProfilingEnabled = enabled; 2279 2280 if (mRenderProfiler != null) { 2281 mChoreographer.removeFrameCallback(mRenderProfiler); 2282 } 2283 if (mRenderProfilingEnabled) { 2284 if (mRenderProfiler == null) { 2285 mRenderProfiler = new Choreographer.FrameCallback() { 2286 @Override 2287 public void doFrame(long frameTimeNanos) { 2288 mDirty.set(0, 0, mWidth, mHeight); 2289 scheduleTraversals(); 2290 if (mRenderProfilingEnabled) { 2291 mChoreographer.postFrameCallback(mRenderProfiler); 2292 } 2293 } 2294 }; 2295 } 2296 mChoreographer.postFrameCallback(mRenderProfiler); 2297 } else { 2298 mRenderProfiler = null; 2299 } 2300 } 2301 } 2302 2303 /** 2304 * Called from draw() when DEBUG_FPS is enabled 2305 */ 2306 private void trackFPS() { 2307 // Tracks frames per second drawn. First value in a series of draws may be bogus 2308 // because it down not account for the intervening idle time 2309 long nowTime = System.currentTimeMillis(); 2310 if (mFpsStartTime < 0) { 2311 mFpsStartTime = mFpsPrevTime = nowTime; 2312 mFpsNumFrames = 0; 2313 } else { 2314 ++mFpsNumFrames; 2315 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2316 long frameTime = nowTime - mFpsPrevTime; 2317 long totalTime = nowTime - mFpsStartTime; 2318 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2319 mFpsPrevTime = nowTime; 2320 if (totalTime > 1000) { 2321 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2322 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2323 mFpsStartTime = nowTime; 2324 mFpsNumFrames = 0; 2325 } 2326 } 2327 } 2328 2329 private void performDraw() { 2330 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2331 return; 2332 } 2333 2334 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2335 mFullRedrawNeeded = false; 2336 2337 mIsDrawing = true; 2338 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2339 try { 2340 draw(fullRedrawNeeded); 2341 } finally { 2342 mIsDrawing = false; 2343 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2344 } 2345 2346 // For whatever reason we didn't create a HardwareRenderer, end any 2347 // hardware animations that are now dangling 2348 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2349 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2350 for (int i = 0; i < count; i++) { 2351 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2352 } 2353 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2354 } 2355 2356 if (mReportNextDraw) { 2357 mReportNextDraw = false; 2358 if (mAttachInfo.mHardwareRenderer != null) { 2359 mAttachInfo.mHardwareRenderer.fence(); 2360 } 2361 2362 if (LOCAL_LOGV) { 2363 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2364 } 2365 if (mSurfaceHolder != null && mSurface.isValid()) { 2366 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2367 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2368 if (callbacks != null) { 2369 for (SurfaceHolder.Callback c : callbacks) { 2370 if (c instanceof SurfaceHolder.Callback2) { 2371 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2372 mSurfaceHolder); 2373 } 2374 } 2375 } 2376 } 2377 try { 2378 mWindowSession.finishDrawing(mWindow); 2379 } catch (RemoteException e) { 2380 } 2381 } 2382 } 2383 2384 private void draw(boolean fullRedrawNeeded) { 2385 Surface surface = mSurface; 2386 if (!surface.isValid()) { 2387 return; 2388 } 2389 2390 if (DEBUG_FPS) { 2391 trackFPS(); 2392 } 2393 2394 if (!sFirstDrawComplete) { 2395 synchronized (sFirstDrawHandlers) { 2396 sFirstDrawComplete = true; 2397 final int count = sFirstDrawHandlers.size(); 2398 for (int i = 0; i< count; i++) { 2399 mHandler.post(sFirstDrawHandlers.get(i)); 2400 } 2401 } 2402 } 2403 2404 scrollToRectOrFocus(null, false); 2405 2406 if (mAttachInfo.mViewScrollChanged) { 2407 mAttachInfo.mViewScrollChanged = false; 2408 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2409 } 2410 2411 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2412 final int curScrollY; 2413 if (animating) { 2414 curScrollY = mScroller.getCurrY(); 2415 } else { 2416 curScrollY = mScrollY; 2417 } 2418 if (mCurScrollY != curScrollY) { 2419 mCurScrollY = curScrollY; 2420 fullRedrawNeeded = true; 2421 if (mView instanceof RootViewSurfaceTaker) { 2422 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2423 } 2424 } 2425 2426 final float appScale = mAttachInfo.mApplicationScale; 2427 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2428 2429 int resizeAlpha = 0; 2430 if (mResizeBuffer != null) { 2431 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2432 if (deltaTime < mResizeBufferDuration) { 2433 float amt = deltaTime/(float) mResizeBufferDuration; 2434 amt = mResizeInterpolator.getInterpolation(amt); 2435 animating = true; 2436 resizeAlpha = 255 - (int)(amt*255); 2437 } else { 2438 disposeResizeBuffer(); 2439 } 2440 } 2441 2442 final Rect dirty = mDirty; 2443 if (mSurfaceHolder != null) { 2444 // The app owns the surface, we won't draw. 2445 dirty.setEmpty(); 2446 if (animating) { 2447 if (mScroller != null) { 2448 mScroller.abortAnimation(); 2449 } 2450 disposeResizeBuffer(); 2451 } 2452 return; 2453 } 2454 2455 if (fullRedrawNeeded) { 2456 mAttachInfo.mIgnoreDirtyState = true; 2457 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2458 } 2459 2460 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2461 Log.v(TAG, "Draw " + mView + "/" 2462 + mWindowAttributes.getTitle() 2463 + ": dirty={" + dirty.left + "," + dirty.top 2464 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2465 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2466 appScale + ", width=" + mWidth + ", height=" + mHeight); 2467 } 2468 2469 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2470 2471 int xOffset = 0; 2472 int yOffset = curScrollY; 2473 final WindowManager.LayoutParams params = mWindowAttributes; 2474 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2475 if (surfaceInsets != null) { 2476 xOffset -= surfaceInsets.left; 2477 yOffset -= surfaceInsets.top; 2478 2479 // Offset dirty rect for surface insets. 2480 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2481 } 2482 2483 if (!dirty.isEmpty() || mIsAnimating) { 2484 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2485 // Draw with hardware renderer. 2486 mIsAnimating = false; 2487 boolean invalidateRoot = false; 2488 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2489 mHardwareYOffset = yOffset; 2490 mHardwareXOffset = xOffset; 2491 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2492 } 2493 mResizeAlpha = resizeAlpha; 2494 2495 dirty.setEmpty(); 2496 2497 mBlockResizeBuffer = false; 2498 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2499 } else { 2500 // If we get here with a disabled & requested hardware renderer, something went 2501 // wrong (an invalidate posted right before we destroyed the hardware surface 2502 // for instance) so we should just bail out. Locking the surface with software 2503 // rendering at this point would lock it forever and prevent hardware renderer 2504 // from doing its job when it comes back. 2505 // Before we request a new frame we must however attempt to reinitiliaze the 2506 // hardware renderer if it's in requested state. This would happen after an 2507 // eglTerminate() for instance. 2508 if (mAttachInfo.mHardwareRenderer != null && 2509 !mAttachInfo.mHardwareRenderer.isEnabled() && 2510 mAttachInfo.mHardwareRenderer.isRequested()) { 2511 2512 try { 2513 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2514 mWidth, mHeight, mSurface, surfaceInsets); 2515 } catch (OutOfResourcesException e) { 2516 handleOutOfResourcesException(e); 2517 return; 2518 } 2519 2520 mFullRedrawNeeded = true; 2521 scheduleTraversals(); 2522 return; 2523 } 2524 2525 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2526 return; 2527 } 2528 } 2529 } 2530 2531 if (animating) { 2532 mFullRedrawNeeded = true; 2533 scheduleTraversals(); 2534 } 2535 } 2536 2537 /** 2538 * @return true if drawing was successful, false if an error occurred 2539 */ 2540 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2541 boolean scalingRequired, Rect dirty) { 2542 2543 // Draw with software renderer. 2544 final Canvas canvas; 2545 try { 2546 final int left = dirty.left; 2547 final int top = dirty.top; 2548 final int right = dirty.right; 2549 final int bottom = dirty.bottom; 2550 2551 canvas = mSurface.lockCanvas(dirty); 2552 2553 // The dirty rectangle can be modified by Surface.lockCanvas() 2554 //noinspection ConstantConditions 2555 if (left != dirty.left || top != dirty.top || right != dirty.right 2556 || bottom != dirty.bottom) { 2557 attachInfo.mIgnoreDirtyState = true; 2558 } 2559 2560 // TODO: Do this in native 2561 canvas.setDensity(mDensity); 2562 } catch (Surface.OutOfResourcesException e) { 2563 handleOutOfResourcesException(e); 2564 return false; 2565 } catch (IllegalArgumentException e) { 2566 Log.e(TAG, "Could not lock surface", e); 2567 // Don't assume this is due to out of memory, it could be 2568 // something else, and if it is something else then we could 2569 // kill stuff (or ourself) for no reason. 2570 mLayoutRequested = true; // ask wm for a new surface next time. 2571 return false; 2572 } 2573 2574 try { 2575 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2576 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2577 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2578 //canvas.drawARGB(255, 255, 0, 0); 2579 } 2580 2581 // If this bitmap's format includes an alpha channel, we 2582 // need to clear it before drawing so that the child will 2583 // properly re-composite its drawing on a transparent 2584 // background. This automatically respects the clip/dirty region 2585 // or 2586 // If we are applying an offset, we need to clear the area 2587 // where the offset doesn't appear to avoid having garbage 2588 // left in the blank areas. 2589 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2590 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2591 } 2592 2593 dirty.setEmpty(); 2594 mIsAnimating = false; 2595 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2596 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2597 2598 if (DEBUG_DRAW) { 2599 Context cxt = mView.getContext(); 2600 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2601 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2602 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2603 } 2604 try { 2605 canvas.translate(-xoff, -yoff); 2606 if (mTranslator != null) { 2607 mTranslator.translateCanvas(canvas); 2608 } 2609 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2610 attachInfo.mSetIgnoreDirtyState = false; 2611 2612 mView.draw(canvas); 2613 } finally { 2614 if (!attachInfo.mSetIgnoreDirtyState) { 2615 // Only clear the flag if it was not set during the mView.draw() call 2616 attachInfo.mIgnoreDirtyState = false; 2617 } 2618 } 2619 } finally { 2620 try { 2621 surface.unlockCanvasAndPost(canvas); 2622 } catch (IllegalArgumentException e) { 2623 Log.e(TAG, "Could not unlock surface", e); 2624 mLayoutRequested = true; // ask wm for a new surface next time. 2625 //noinspection ReturnInsideFinallyBlock 2626 return false; 2627 } 2628 2629 if (LOCAL_LOGV) { 2630 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2631 } 2632 } 2633 return true; 2634 } 2635 2636 Drawable getAccessibilityFocusedDrawable() { 2637 // Lazily load the accessibility focus drawable. 2638 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2639 final TypedValue value = new TypedValue(); 2640 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2641 R.attr.accessibilityFocusedDrawable, value, true); 2642 if (resolved) { 2643 mAttachInfo.mAccessibilityFocusDrawable = 2644 mView.mContext.getDrawable(value.resourceId); 2645 } 2646 } 2647 return mAttachInfo.mAccessibilityFocusDrawable; 2648 } 2649 2650 /** 2651 * @hide 2652 */ 2653 public void setDrawDuringWindowsAnimating(boolean value) { 2654 mDrawDuringWindowsAnimating = value; 2655 if (value) { 2656 handleDispatchDoneAnimating(); 2657 } 2658 } 2659 2660 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2661 final Rect ci = mAttachInfo.mContentInsets; 2662 final Rect vi = mAttachInfo.mVisibleInsets; 2663 int scrollY = 0; 2664 boolean handled = false; 2665 2666 if (vi.left > ci.left || vi.top > ci.top 2667 || vi.right > ci.right || vi.bottom > ci.bottom) { 2668 // We'll assume that we aren't going to change the scroll 2669 // offset, since we want to avoid that unless it is actually 2670 // going to make the focus visible... otherwise we scroll 2671 // all over the place. 2672 scrollY = mScrollY; 2673 // We can be called for two different situations: during a draw, 2674 // to update the scroll position if the focus has changed (in which 2675 // case 'rectangle' is null), or in response to a 2676 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2677 // is non-null and we just want to scroll to whatever that 2678 // rectangle is). 2679 final View focus = mView.findFocus(); 2680 if (focus == null) { 2681 return false; 2682 } 2683 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2684 if (focus != lastScrolledFocus) { 2685 // If the focus has changed, then ignore any requests to scroll 2686 // to a rectangle; first we want to make sure the entire focus 2687 // view is visible. 2688 rectangle = null; 2689 } 2690 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2691 + " rectangle=" + rectangle + " ci=" + ci 2692 + " vi=" + vi); 2693 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2694 // Optimization: if the focus hasn't changed since last 2695 // time, and no layout has happened, then just leave things 2696 // as they are. 2697 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2698 + mScrollY + " vi=" + vi.toShortString()); 2699 } else { 2700 // We need to determine if the currently focused view is 2701 // within the visible part of the window and, if not, apply 2702 // a pan so it can be seen. 2703 mLastScrolledFocus = new WeakReference<View>(focus); 2704 mScrollMayChange = false; 2705 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2706 // Try to find the rectangle from the focus view. 2707 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2708 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2709 + mView.getWidth() + " h=" + mView.getHeight() 2710 + " ci=" + ci.toShortString() 2711 + " vi=" + vi.toShortString()); 2712 if (rectangle == null) { 2713 focus.getFocusedRect(mTempRect); 2714 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2715 + ": focusRect=" + mTempRect.toShortString()); 2716 if (mView instanceof ViewGroup) { 2717 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2718 focus, mTempRect); 2719 } 2720 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2721 "Focus in window: focusRect=" 2722 + mTempRect.toShortString() 2723 + " visRect=" + mVisRect.toShortString()); 2724 } else { 2725 mTempRect.set(rectangle); 2726 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2727 "Request scroll to rect: " 2728 + mTempRect.toShortString() 2729 + " visRect=" + mVisRect.toShortString()); 2730 } 2731 if (mTempRect.intersect(mVisRect)) { 2732 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2733 "Focus window visible rect: " 2734 + mTempRect.toShortString()); 2735 if (mTempRect.height() > 2736 (mView.getHeight()-vi.top-vi.bottom)) { 2737 // If the focus simply is not going to fit, then 2738 // best is probably just to leave things as-is. 2739 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2740 "Too tall; leaving scrollY=" + scrollY); 2741 } else if ((mTempRect.top-scrollY) < vi.top) { 2742 scrollY -= vi.top - (mTempRect.top-scrollY); 2743 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2744 "Top covered; scrollY=" + scrollY); 2745 } else if ((mTempRect.bottom-scrollY) 2746 > (mView.getHeight()-vi.bottom)) { 2747 scrollY += (mTempRect.bottom-scrollY) 2748 - (mView.getHeight()-vi.bottom); 2749 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2750 "Bottom covered; scrollY=" + scrollY); 2751 } 2752 handled = true; 2753 } 2754 } 2755 } 2756 } 2757 2758 if (scrollY != mScrollY) { 2759 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2760 + mScrollY + " , new=" + scrollY); 2761 if (!immediate && mResizeBuffer == null) { 2762 if (mScroller == null) { 2763 mScroller = new Scroller(mView.getContext()); 2764 } 2765 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2766 } else if (mScroller != null) { 2767 mScroller.abortAnimation(); 2768 } 2769 mScrollY = scrollY; 2770 } 2771 2772 return handled; 2773 } 2774 2775 /** 2776 * @hide 2777 */ 2778 public View getAccessibilityFocusedHost() { 2779 return mAccessibilityFocusedHost; 2780 } 2781 2782 /** 2783 * @hide 2784 */ 2785 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2786 return mAccessibilityFocusedVirtualView; 2787 } 2788 2789 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2790 // If we have a virtual view with accessibility focus we need 2791 // to clear the focus and invalidate the virtual view bounds. 2792 if (mAccessibilityFocusedVirtualView != null) { 2793 2794 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2795 View focusHost = mAccessibilityFocusedHost; 2796 2797 // Wipe the state of the current accessibility focus since 2798 // the call into the provider to clear accessibility focus 2799 // will fire an accessibility event which will end up calling 2800 // this method and we want to have clean state when this 2801 // invocation happens. 2802 mAccessibilityFocusedHost = null; 2803 mAccessibilityFocusedVirtualView = null; 2804 2805 // Clear accessibility focus on the host after clearing state since 2806 // this method may be reentrant. 2807 focusHost.clearAccessibilityFocusNoCallbacks(); 2808 2809 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2810 if (provider != null) { 2811 // Invalidate the area of the cleared accessibility focus. 2812 focusNode.getBoundsInParent(mTempRect); 2813 focusHost.invalidate(mTempRect); 2814 // Clear accessibility focus in the virtual node. 2815 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2816 focusNode.getSourceNodeId()); 2817 provider.performAction(virtualNodeId, 2818 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2819 } 2820 focusNode.recycle(); 2821 } 2822 if (mAccessibilityFocusedHost != null) { 2823 // Clear accessibility focus in the view. 2824 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2825 } 2826 2827 // Set the new focus host and node. 2828 mAccessibilityFocusedHost = view; 2829 mAccessibilityFocusedVirtualView = node; 2830 2831 if (mAttachInfo.mHardwareRenderer != null) { 2832 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2833 } 2834 } 2835 2836 @Override 2837 public void requestChildFocus(View child, View focused) { 2838 if (DEBUG_INPUT_RESIZE) { 2839 Log.v(TAG, "Request child focus: focus now " + focused); 2840 } 2841 checkThread(); 2842 scheduleTraversals(); 2843 } 2844 2845 @Override 2846 public void clearChildFocus(View child) { 2847 if (DEBUG_INPUT_RESIZE) { 2848 Log.v(TAG, "Clearing child focus"); 2849 } 2850 checkThread(); 2851 scheduleTraversals(); 2852 } 2853 2854 @Override 2855 public ViewParent getParentForAccessibility() { 2856 return null; 2857 } 2858 2859 @Override 2860 public void focusableViewAvailable(View v) { 2861 checkThread(); 2862 if (mView != null) { 2863 if (!mView.hasFocus()) { 2864 v.requestFocus(); 2865 } else { 2866 // the one case where will transfer focus away from the current one 2867 // is if the current view is a view group that prefers to give focus 2868 // to its children first AND the view is a descendant of it. 2869 View focused = mView.findFocus(); 2870 if (focused instanceof ViewGroup) { 2871 ViewGroup group = (ViewGroup) focused; 2872 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2873 && isViewDescendantOf(v, focused)) { 2874 v.requestFocus(); 2875 } 2876 } 2877 } 2878 } 2879 } 2880 2881 @Override 2882 public void recomputeViewAttributes(View child) { 2883 checkThread(); 2884 if (mView == child) { 2885 mAttachInfo.mRecomputeGlobalAttributes = true; 2886 if (!mWillDrawSoon) { 2887 scheduleTraversals(); 2888 } 2889 } 2890 } 2891 2892 void dispatchDetachedFromWindow() { 2893 if (mView != null && mView.mAttachInfo != null) { 2894 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2895 mView.dispatchDetachedFromWindow(); 2896 } 2897 2898 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2899 mAccessibilityManager.removeAccessibilityStateChangeListener( 2900 mAccessibilityInteractionConnectionManager); 2901 mAccessibilityManager.removeHighTextContrastStateChangeListener( 2902 mHighContrastTextManager); 2903 removeSendWindowContentChangedCallback(); 2904 2905 destroyHardwareRenderer(); 2906 2907 setAccessibilityFocus(null, null); 2908 2909 mView.assignParent(null); 2910 mView = null; 2911 mAttachInfo.mRootView = null; 2912 2913 mSurface.release(); 2914 2915 if (mInputQueueCallback != null && mInputQueue != null) { 2916 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2917 mInputQueue.dispose(); 2918 mInputQueueCallback = null; 2919 mInputQueue = null; 2920 } 2921 if (mInputEventReceiver != null) { 2922 mInputEventReceiver.dispose(); 2923 mInputEventReceiver = null; 2924 } 2925 try { 2926 mWindowSession.remove(mWindow); 2927 } catch (RemoteException e) { 2928 } 2929 2930 // Dispose the input channel after removing the window so the Window Manager 2931 // doesn't interpret the input channel being closed as an abnormal termination. 2932 if (mInputChannel != null) { 2933 mInputChannel.dispose(); 2934 mInputChannel = null; 2935 } 2936 2937 mDisplayManager.unregisterDisplayListener(mDisplayListener); 2938 2939 unscheduleTraversals(); 2940 } 2941 2942 void updateConfiguration(Configuration config, boolean force) { 2943 if (DEBUG_CONFIGURATION) Log.v(TAG, 2944 "Applying new config to window " 2945 + mWindowAttributes.getTitle() 2946 + ": " + config); 2947 2948 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2949 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2950 config = new Configuration(config); 2951 ci.applyToConfiguration(mNoncompatDensity, config); 2952 } 2953 2954 synchronized (sConfigCallbacks) { 2955 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2956 sConfigCallbacks.get(i).onConfigurationChanged(config); 2957 } 2958 } 2959 if (mView != null) { 2960 // At this point the resources have been updated to 2961 // have the most recent config, whatever that is. Use 2962 // the one in them which may be newer. 2963 config = mView.getResources().getConfiguration(); 2964 if (force || mLastConfiguration.diff(config) != 0) { 2965 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2966 final int currentLayoutDirection = config.getLayoutDirection(); 2967 mLastConfiguration.setTo(config); 2968 if (lastLayoutDirection != currentLayoutDirection && 2969 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2970 mView.setLayoutDirection(currentLayoutDirection); 2971 } 2972 mView.dispatchConfigurationChanged(config); 2973 } 2974 } 2975 } 2976 2977 /** 2978 * Return true if child is an ancestor of parent, (or equal to the parent). 2979 */ 2980 public static boolean isViewDescendantOf(View child, View parent) { 2981 if (child == parent) { 2982 return true; 2983 } 2984 2985 final ViewParent theParent = child.getParent(); 2986 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2987 } 2988 2989 private static void forceLayout(View view) { 2990 view.forceLayout(); 2991 if (view instanceof ViewGroup) { 2992 ViewGroup group = (ViewGroup) view; 2993 final int count = group.getChildCount(); 2994 for (int i = 0; i < count; i++) { 2995 forceLayout(group.getChildAt(i)); 2996 } 2997 } 2998 } 2999 3000 private final static int MSG_INVALIDATE = 1; 3001 private final static int MSG_INVALIDATE_RECT = 2; 3002 private final static int MSG_DIE = 3; 3003 private final static int MSG_RESIZED = 4; 3004 private final static int MSG_RESIZED_REPORT = 5; 3005 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3006 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3007 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3008 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3009 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3010 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 3011 private final static int MSG_CHECK_FOCUS = 13; 3012 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3013 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3014 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3015 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3016 private final static int MSG_UPDATE_CONFIGURATION = 18; 3017 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3018 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3019 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 3020 private final static int MSG_INVALIDATE_WORLD = 23; 3021 private final static int MSG_WINDOW_MOVED = 24; 3022 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 25; 3023 3024 final class ViewRootHandler extends Handler { 3025 @Override 3026 public String getMessageName(Message message) { 3027 switch (message.what) { 3028 case MSG_INVALIDATE: 3029 return "MSG_INVALIDATE"; 3030 case MSG_INVALIDATE_RECT: 3031 return "MSG_INVALIDATE_RECT"; 3032 case MSG_DIE: 3033 return "MSG_DIE"; 3034 case MSG_RESIZED: 3035 return "MSG_RESIZED"; 3036 case MSG_RESIZED_REPORT: 3037 return "MSG_RESIZED_REPORT"; 3038 case MSG_WINDOW_FOCUS_CHANGED: 3039 return "MSG_WINDOW_FOCUS_CHANGED"; 3040 case MSG_DISPATCH_INPUT_EVENT: 3041 return "MSG_DISPATCH_INPUT_EVENT"; 3042 case MSG_DISPATCH_APP_VISIBILITY: 3043 return "MSG_DISPATCH_APP_VISIBILITY"; 3044 case MSG_DISPATCH_GET_NEW_SURFACE: 3045 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3046 case MSG_DISPATCH_KEY_FROM_IME: 3047 return "MSG_DISPATCH_KEY_FROM_IME"; 3048 case MSG_FINISH_INPUT_CONNECTION: 3049 return "MSG_FINISH_INPUT_CONNECTION"; 3050 case MSG_CHECK_FOCUS: 3051 return "MSG_CHECK_FOCUS"; 3052 case MSG_CLOSE_SYSTEM_DIALOGS: 3053 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3054 case MSG_DISPATCH_DRAG_EVENT: 3055 return "MSG_DISPATCH_DRAG_EVENT"; 3056 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3057 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3058 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3059 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3060 case MSG_UPDATE_CONFIGURATION: 3061 return "MSG_UPDATE_CONFIGURATION"; 3062 case MSG_PROCESS_INPUT_EVENTS: 3063 return "MSG_PROCESS_INPUT_EVENTS"; 3064 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3065 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3066 case MSG_DISPATCH_DONE_ANIMATING: 3067 return "MSG_DISPATCH_DONE_ANIMATING"; 3068 case MSG_WINDOW_MOVED: 3069 return "MSG_WINDOW_MOVED"; 3070 case MSG_SYNTHESIZE_INPUT_EVENT: 3071 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3072 } 3073 return super.getMessageName(message); 3074 } 3075 3076 @Override 3077 public void handleMessage(Message msg) { 3078 switch (msg.what) { 3079 case MSG_INVALIDATE: 3080 ((View) msg.obj).invalidate(); 3081 break; 3082 case MSG_INVALIDATE_RECT: 3083 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3084 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3085 info.recycle(); 3086 break; 3087 case MSG_PROCESS_INPUT_EVENTS: 3088 mProcessInputEventsScheduled = false; 3089 doProcessInputEvents(); 3090 break; 3091 case MSG_DISPATCH_APP_VISIBILITY: 3092 handleAppVisibility(msg.arg1 != 0); 3093 break; 3094 case MSG_DISPATCH_GET_NEW_SURFACE: 3095 handleGetNewSurface(); 3096 break; 3097 case MSG_RESIZED: { 3098 // Recycled in the fall through... 3099 SomeArgs args = (SomeArgs) msg.obj; 3100 if (mWinFrame.equals(args.arg1) 3101 && mPendingOverscanInsets.equals(args.arg5) 3102 && mPendingContentInsets.equals(args.arg2) 3103 && mPendingStableInsets.equals(args.arg6) 3104 && mPendingVisibleInsets.equals(args.arg3) 3105 && args.arg4 == null) { 3106 break; 3107 } 3108 } // fall through... 3109 case MSG_RESIZED_REPORT: 3110 if (mAdded) { 3111 SomeArgs args = (SomeArgs) msg.obj; 3112 3113 Configuration config = (Configuration) args.arg4; 3114 if (config != null) { 3115 updateConfiguration(config, false); 3116 } 3117 3118 mWinFrame.set((Rect) args.arg1); 3119 mPendingOverscanInsets.set((Rect) args.arg5); 3120 mPendingContentInsets.set((Rect) args.arg2); 3121 mPendingStableInsets.set((Rect) args.arg6); 3122 mPendingVisibleInsets.set((Rect) args.arg3); 3123 3124 args.recycle(); 3125 3126 if (msg.what == MSG_RESIZED_REPORT) { 3127 mReportNextDraw = true; 3128 } 3129 3130 if (mView != null) { 3131 forceLayout(mView); 3132 } 3133 3134 requestLayout(); 3135 } 3136 break; 3137 case MSG_WINDOW_MOVED: 3138 if (mAdded) { 3139 final int w = mWinFrame.width(); 3140 final int h = mWinFrame.height(); 3141 final int l = msg.arg1; 3142 final int t = msg.arg2; 3143 mWinFrame.left = l; 3144 mWinFrame.right = l + w; 3145 mWinFrame.top = t; 3146 mWinFrame.bottom = t + h; 3147 3148 if (mView != null) { 3149 forceLayout(mView); 3150 } 3151 requestLayout(); 3152 } 3153 break; 3154 case MSG_WINDOW_FOCUS_CHANGED: { 3155 if (mAdded) { 3156 boolean hasWindowFocus = msg.arg1 != 0; 3157 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3158 3159 profileRendering(hasWindowFocus); 3160 3161 if (hasWindowFocus) { 3162 boolean inTouchMode = msg.arg2 != 0; 3163 ensureTouchModeLocally(inTouchMode); 3164 3165 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3166 mFullRedrawNeeded = true; 3167 try { 3168 final WindowManager.LayoutParams lp = mWindowAttributes; 3169 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3170 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3171 mWidth, mHeight, mSurface, surfaceInsets); 3172 } catch (OutOfResourcesException e) { 3173 Log.e(TAG, "OutOfResourcesException locking surface", e); 3174 try { 3175 if (!mWindowSession.outOfMemory(mWindow)) { 3176 Slog.w(TAG, "No processes killed for memory; killing self"); 3177 Process.killProcess(Process.myPid()); 3178 } 3179 } catch (RemoteException ex) { 3180 } 3181 // Retry in a bit. 3182 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3183 return; 3184 } 3185 } 3186 } 3187 3188 mLastWasImTarget = WindowManager.LayoutParams 3189 .mayUseInputMethod(mWindowAttributes.flags); 3190 3191 InputMethodManager imm = InputMethodManager.peekInstance(); 3192 if (mView != null) { 3193 if (hasWindowFocus && imm != null && mLastWasImTarget && 3194 !isInLocalFocusMode()) { 3195 imm.startGettingWindowFocus(mView); 3196 } 3197 mAttachInfo.mKeyDispatchState.reset(); 3198 mView.dispatchWindowFocusChanged(hasWindowFocus); 3199 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3200 } 3201 3202 // Note: must be done after the focus change callbacks, 3203 // so all of the view state is set up correctly. 3204 if (hasWindowFocus) { 3205 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3206 imm.onWindowFocus(mView, mView.findFocus(), 3207 mWindowAttributes.softInputMode, 3208 !mHasHadWindowFocus, mWindowAttributes.flags); 3209 } 3210 // Clear the forward bit. We can just do this directly, since 3211 // the window manager doesn't care about it. 3212 mWindowAttributes.softInputMode &= 3213 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3214 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3215 .softInputMode &= 3216 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3217 mHasHadWindowFocus = true; 3218 } 3219 3220 if (mView != null && mAccessibilityManager.isEnabled()) { 3221 if (hasWindowFocus) { 3222 mView.sendAccessibilityEvent( 3223 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3224 } 3225 } 3226 } 3227 } break; 3228 case MSG_DIE: 3229 doDie(); 3230 break; 3231 case MSG_DISPATCH_INPUT_EVENT: { 3232 SomeArgs args = (SomeArgs)msg.obj; 3233 InputEvent event = (InputEvent)args.arg1; 3234 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3235 enqueueInputEvent(event, receiver, 0, true); 3236 args.recycle(); 3237 } break; 3238 case MSG_SYNTHESIZE_INPUT_EVENT: { 3239 InputEvent event = (InputEvent)msg.obj; 3240 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3241 } break; 3242 case MSG_DISPATCH_KEY_FROM_IME: { 3243 if (LOCAL_LOGV) Log.v( 3244 TAG, "Dispatching key " 3245 + msg.obj + " from IME to " + mView); 3246 KeyEvent event = (KeyEvent)msg.obj; 3247 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3248 // The IME is trying to say this event is from the 3249 // system! Bad bad bad! 3250 //noinspection UnusedAssignment 3251 event = KeyEvent.changeFlags(event, event.getFlags() & 3252 ~KeyEvent.FLAG_FROM_SYSTEM); 3253 } 3254 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3255 } break; 3256 case MSG_FINISH_INPUT_CONNECTION: { 3257 InputMethodManager imm = InputMethodManager.peekInstance(); 3258 if (imm != null) { 3259 imm.reportFinishInputConnection((InputConnection)msg.obj); 3260 } 3261 } break; 3262 case MSG_CHECK_FOCUS: { 3263 InputMethodManager imm = InputMethodManager.peekInstance(); 3264 if (imm != null) { 3265 imm.checkFocus(); 3266 } 3267 } break; 3268 case MSG_CLOSE_SYSTEM_DIALOGS: { 3269 if (mView != null) { 3270 mView.onCloseSystemDialogs((String)msg.obj); 3271 } 3272 } break; 3273 case MSG_DISPATCH_DRAG_EVENT: 3274 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3275 DragEvent event = (DragEvent)msg.obj; 3276 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3277 handleDragEvent(event); 3278 } break; 3279 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3280 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3281 } break; 3282 case MSG_UPDATE_CONFIGURATION: { 3283 Configuration config = (Configuration)msg.obj; 3284 if (config.isOtherSeqNewer(mLastConfiguration)) { 3285 config = mLastConfiguration; 3286 } 3287 updateConfiguration(config, false); 3288 } break; 3289 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3290 setAccessibilityFocus(null, null); 3291 } break; 3292 case MSG_DISPATCH_DONE_ANIMATING: { 3293 handleDispatchDoneAnimating(); 3294 } break; 3295 case MSG_INVALIDATE_WORLD: { 3296 if (mView != null) { 3297 invalidateWorld(mView); 3298 } 3299 } break; 3300 } 3301 } 3302 } 3303 3304 final ViewRootHandler mHandler = new ViewRootHandler(); 3305 3306 /** 3307 * Something in the current window tells us we need to change the touch mode. For 3308 * example, we are not in touch mode, and the user touches the screen. 3309 * 3310 * If the touch mode has changed, tell the window manager, and handle it locally. 3311 * 3312 * @param inTouchMode Whether we want to be in touch mode. 3313 * @return True if the touch mode changed and focus changed was changed as a result 3314 */ 3315 boolean ensureTouchMode(boolean inTouchMode) { 3316 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3317 + "touch mode is " + mAttachInfo.mInTouchMode); 3318 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3319 3320 // tell the window manager 3321 try { 3322 if (!isInLocalFocusMode()) { 3323 mWindowSession.setInTouchMode(inTouchMode); 3324 } 3325 } catch (RemoteException e) { 3326 throw new RuntimeException(e); 3327 } 3328 3329 // handle the change 3330 return ensureTouchModeLocally(inTouchMode); 3331 } 3332 3333 /** 3334 * Ensure that the touch mode for this window is set, and if it is changing, 3335 * take the appropriate action. 3336 * @param inTouchMode Whether we want to be in touch mode. 3337 * @return True if the touch mode changed and focus changed was changed as a result 3338 */ 3339 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3340 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3341 + "touch mode is " + mAttachInfo.mInTouchMode); 3342 3343 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3344 3345 mAttachInfo.mInTouchMode = inTouchMode; 3346 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3347 3348 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3349 } 3350 3351 private boolean enterTouchMode() { 3352 if (mView != null && mView.hasFocus()) { 3353 // note: not relying on mFocusedView here because this could 3354 // be when the window is first being added, and mFocused isn't 3355 // set yet. 3356 final View focused = mView.findFocus(); 3357 if (focused != null && !focused.isFocusableInTouchMode()) { 3358 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3359 if (ancestorToTakeFocus != null) { 3360 // there is an ancestor that wants focus after its 3361 // descendants that is focusable in touch mode.. give it 3362 // focus 3363 return ancestorToTakeFocus.requestFocus(); 3364 } else { 3365 // There's nothing to focus. Clear and propagate through the 3366 // hierarchy, but don't attempt to place new focus. 3367 focused.clearFocusInternal(null, true, false); 3368 return true; 3369 } 3370 } 3371 } 3372 return false; 3373 } 3374 3375 /** 3376 * Find an ancestor of focused that wants focus after its descendants and is 3377 * focusable in touch mode. 3378 * @param focused The currently focused view. 3379 * @return An appropriate view, or null if no such view exists. 3380 */ 3381 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3382 ViewParent parent = focused.getParent(); 3383 while (parent instanceof ViewGroup) { 3384 final ViewGroup vgParent = (ViewGroup) parent; 3385 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3386 && vgParent.isFocusableInTouchMode()) { 3387 return vgParent; 3388 } 3389 if (vgParent.isRootNamespace()) { 3390 return null; 3391 } else { 3392 parent = vgParent.getParent(); 3393 } 3394 } 3395 return null; 3396 } 3397 3398 private boolean leaveTouchMode() { 3399 if (mView != null) { 3400 if (mView.hasFocus()) { 3401 View focusedView = mView.findFocus(); 3402 if (!(focusedView instanceof ViewGroup)) { 3403 // some view has focus, let it keep it 3404 return false; 3405 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3406 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3407 // some view group has focus, and doesn't prefer its children 3408 // over itself for focus, so let them keep it. 3409 return false; 3410 } 3411 } 3412 3413 // find the best view to give focus to in this brave new non-touch-mode 3414 // world 3415 final View focused = focusSearch(null, View.FOCUS_DOWN); 3416 if (focused != null) { 3417 return focused.requestFocus(View.FOCUS_DOWN); 3418 } 3419 } 3420 return false; 3421 } 3422 3423 /** 3424 * Base class for implementing a stage in the chain of responsibility 3425 * for processing input events. 3426 * <p> 3427 * Events are delivered to the stage by the {@link #deliver} method. The stage 3428 * then has the choice of finishing the event or forwarding it to the next stage. 3429 * </p> 3430 */ 3431 abstract class InputStage { 3432 private final InputStage mNext; 3433 3434 protected static final int FORWARD = 0; 3435 protected static final int FINISH_HANDLED = 1; 3436 protected static final int FINISH_NOT_HANDLED = 2; 3437 3438 /** 3439 * Creates an input stage. 3440 * @param next The next stage to which events should be forwarded. 3441 */ 3442 public InputStage(InputStage next) { 3443 mNext = next; 3444 } 3445 3446 /** 3447 * Delivers an event to be processed. 3448 */ 3449 public final void deliver(QueuedInputEvent q) { 3450 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3451 forward(q); 3452 } else if (shouldDropInputEvent(q)) { 3453 finish(q, false); 3454 } else { 3455 apply(q, onProcess(q)); 3456 } 3457 } 3458 3459 /** 3460 * Marks the the input event as finished then forwards it to the next stage. 3461 */ 3462 protected void finish(QueuedInputEvent q, boolean handled) { 3463 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3464 if (handled) { 3465 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3466 } 3467 forward(q); 3468 } 3469 3470 /** 3471 * Forwards the event to the next stage. 3472 */ 3473 protected void forward(QueuedInputEvent q) { 3474 onDeliverToNext(q); 3475 } 3476 3477 /** 3478 * Applies a result code from {@link #onProcess} to the specified event. 3479 */ 3480 protected void apply(QueuedInputEvent q, int result) { 3481 if (result == FORWARD) { 3482 forward(q); 3483 } else if (result == FINISH_HANDLED) { 3484 finish(q, true); 3485 } else if (result == FINISH_NOT_HANDLED) { 3486 finish(q, false); 3487 } else { 3488 throw new IllegalArgumentException("Invalid result: " + result); 3489 } 3490 } 3491 3492 /** 3493 * Called when an event is ready to be processed. 3494 * @return A result code indicating how the event was handled. 3495 */ 3496 protected int onProcess(QueuedInputEvent q) { 3497 return FORWARD; 3498 } 3499 3500 /** 3501 * Called when an event is being delivered to the next stage. 3502 */ 3503 protected void onDeliverToNext(QueuedInputEvent q) { 3504 if (DEBUG_INPUT_STAGES) { 3505 Log.v(TAG, "Done with " + getClass().getSimpleName() + ". " + q); 3506 } 3507 if (mNext != null) { 3508 mNext.deliver(q); 3509 } else { 3510 finishInputEvent(q); 3511 } 3512 } 3513 3514 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3515 if (mView == null || !mAdded) { 3516 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3517 return true; 3518 } else if (!mAttachInfo.mHasWindowFocus && 3519 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3520 !isTerminalInputEvent(q.mEvent)) { 3521 // If this is a focused event and the window doesn't currently have input focus, 3522 // then drop this event. This could be an event that came back from the previous 3523 // stage but the window has lost focus in the meantime. 3524 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3525 return true; 3526 } 3527 return false; 3528 } 3529 3530 void dump(String prefix, PrintWriter writer) { 3531 if (mNext != null) { 3532 mNext.dump(prefix, writer); 3533 } 3534 } 3535 } 3536 3537 /** 3538 * Base class for implementing an input pipeline stage that supports 3539 * asynchronous and out-of-order processing of input events. 3540 * <p> 3541 * In addition to what a normal input stage can do, an asynchronous 3542 * input stage may also defer an input event that has been delivered to it 3543 * and finish or forward it later. 3544 * </p> 3545 */ 3546 abstract class AsyncInputStage extends InputStage { 3547 private final String mTraceCounter; 3548 3549 private QueuedInputEvent mQueueHead; 3550 private QueuedInputEvent mQueueTail; 3551 private int mQueueLength; 3552 3553 protected static final int DEFER = 3; 3554 3555 /** 3556 * Creates an asynchronous input stage. 3557 * @param next The next stage to which events should be forwarded. 3558 * @param traceCounter The name of a counter to record the size of 3559 * the queue of pending events. 3560 */ 3561 public AsyncInputStage(InputStage next, String traceCounter) { 3562 super(next); 3563 mTraceCounter = traceCounter; 3564 } 3565 3566 /** 3567 * Marks the event as deferred, which is to say that it will be handled 3568 * asynchronously. The caller is responsible for calling {@link #forward} 3569 * or {@link #finish} later when it is done handling the event. 3570 */ 3571 protected void defer(QueuedInputEvent q) { 3572 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3573 enqueue(q); 3574 } 3575 3576 @Override 3577 protected void forward(QueuedInputEvent q) { 3578 // Clear the deferred flag. 3579 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3580 3581 // Fast path if the queue is empty. 3582 QueuedInputEvent curr = mQueueHead; 3583 if (curr == null) { 3584 super.forward(q); 3585 return; 3586 } 3587 3588 // Determine whether the event must be serialized behind any others 3589 // before it can be delivered to the next stage. This is done because 3590 // deferred events might be handled out of order by the stage. 3591 final int deviceId = q.mEvent.getDeviceId(); 3592 QueuedInputEvent prev = null; 3593 boolean blocked = false; 3594 while (curr != null && curr != q) { 3595 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3596 blocked = true; 3597 } 3598 prev = curr; 3599 curr = curr.mNext; 3600 } 3601 3602 // If the event is blocked, then leave it in the queue to be delivered later. 3603 // Note that the event might not yet be in the queue if it was not previously 3604 // deferred so we will enqueue it if needed. 3605 if (blocked) { 3606 if (curr == null) { 3607 enqueue(q); 3608 } 3609 return; 3610 } 3611 3612 // The event is not blocked. Deliver it immediately. 3613 if (curr != null) { 3614 curr = curr.mNext; 3615 dequeue(q, prev); 3616 } 3617 super.forward(q); 3618 3619 // Dequeuing this event may have unblocked successors. Deliver them. 3620 while (curr != null) { 3621 if (deviceId == curr.mEvent.getDeviceId()) { 3622 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3623 break; 3624 } 3625 QueuedInputEvent next = curr.mNext; 3626 dequeue(curr, prev); 3627 super.forward(curr); 3628 curr = next; 3629 } else { 3630 prev = curr; 3631 curr = curr.mNext; 3632 } 3633 } 3634 } 3635 3636 @Override 3637 protected void apply(QueuedInputEvent q, int result) { 3638 if (result == DEFER) { 3639 defer(q); 3640 } else { 3641 super.apply(q, result); 3642 } 3643 } 3644 3645 private void enqueue(QueuedInputEvent q) { 3646 if (mQueueTail == null) { 3647 mQueueHead = q; 3648 mQueueTail = q; 3649 } else { 3650 mQueueTail.mNext = q; 3651 mQueueTail = q; 3652 } 3653 3654 mQueueLength += 1; 3655 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3656 } 3657 3658 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3659 if (prev == null) { 3660 mQueueHead = q.mNext; 3661 } else { 3662 prev.mNext = q.mNext; 3663 } 3664 if (mQueueTail == q) { 3665 mQueueTail = prev; 3666 } 3667 q.mNext = null; 3668 3669 mQueueLength -= 1; 3670 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3671 } 3672 3673 @Override 3674 void dump(String prefix, PrintWriter writer) { 3675 writer.print(prefix); 3676 writer.print(getClass().getName()); 3677 writer.print(": mQueueLength="); 3678 writer.println(mQueueLength); 3679 3680 super.dump(prefix, writer); 3681 } 3682 } 3683 3684 /** 3685 * Delivers pre-ime input events to a native activity. 3686 * Does not support pointer events. 3687 */ 3688 final class NativePreImeInputStage extends AsyncInputStage 3689 implements InputQueue.FinishedInputEventCallback { 3690 public NativePreImeInputStage(InputStage next, String traceCounter) { 3691 super(next, traceCounter); 3692 } 3693 3694 @Override 3695 protected int onProcess(QueuedInputEvent q) { 3696 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3697 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3698 return DEFER; 3699 } 3700 return FORWARD; 3701 } 3702 3703 @Override 3704 public void onFinishedInputEvent(Object token, boolean handled) { 3705 QueuedInputEvent q = (QueuedInputEvent)token; 3706 if (handled) { 3707 finish(q, true); 3708 return; 3709 } 3710 forward(q); 3711 } 3712 } 3713 3714 /** 3715 * Delivers pre-ime input events to the view hierarchy. 3716 * Does not support pointer events. 3717 */ 3718 final class ViewPreImeInputStage extends InputStage { 3719 public ViewPreImeInputStage(InputStage next) { 3720 super(next); 3721 } 3722 3723 @Override 3724 protected int onProcess(QueuedInputEvent q) { 3725 if (q.mEvent instanceof KeyEvent) { 3726 return processKeyEvent(q); 3727 } 3728 return FORWARD; 3729 } 3730 3731 private int processKeyEvent(QueuedInputEvent q) { 3732 final KeyEvent event = (KeyEvent)q.mEvent; 3733 if (mView.dispatchKeyEventPreIme(event)) { 3734 return FINISH_HANDLED; 3735 } 3736 return FORWARD; 3737 } 3738 } 3739 3740 /** 3741 * Delivers input events to the ime. 3742 * Does not support pointer events. 3743 */ 3744 final class ImeInputStage extends AsyncInputStage 3745 implements InputMethodManager.FinishedInputEventCallback { 3746 public ImeInputStage(InputStage next, String traceCounter) { 3747 super(next, traceCounter); 3748 } 3749 3750 @Override 3751 protected int onProcess(QueuedInputEvent q) { 3752 if (mLastWasImTarget && !isInLocalFocusMode()) { 3753 InputMethodManager imm = InputMethodManager.peekInstance(); 3754 if (imm != null) { 3755 final InputEvent event = q.mEvent; 3756 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3757 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3758 if (result == InputMethodManager.DISPATCH_HANDLED) { 3759 return FINISH_HANDLED; 3760 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3761 // The IME could not handle it, so skip along to the next InputStage 3762 return FORWARD; 3763 } else { 3764 return DEFER; // callback will be invoked later 3765 } 3766 } 3767 } 3768 return FORWARD; 3769 } 3770 3771 @Override 3772 public void onFinishedInputEvent(Object token, boolean handled) { 3773 QueuedInputEvent q = (QueuedInputEvent)token; 3774 if (handled) { 3775 finish(q, true); 3776 return; 3777 } 3778 forward(q); 3779 } 3780 } 3781 3782 /** 3783 * Performs early processing of post-ime input events. 3784 */ 3785 final class EarlyPostImeInputStage extends InputStage { 3786 public EarlyPostImeInputStage(InputStage next) { 3787 super(next); 3788 } 3789 3790 @Override 3791 protected int onProcess(QueuedInputEvent q) { 3792 if (q.mEvent instanceof KeyEvent) { 3793 return processKeyEvent(q); 3794 } else { 3795 final int source = q.mEvent.getSource(); 3796 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3797 return processPointerEvent(q); 3798 } 3799 } 3800 return FORWARD; 3801 } 3802 3803 private int processKeyEvent(QueuedInputEvent q) { 3804 final KeyEvent event = (KeyEvent)q.mEvent; 3805 3806 // If the key's purpose is to exit touch mode then we consume it 3807 // and consider it handled. 3808 if (checkForLeavingTouchModeAndConsume(event)) { 3809 return FINISH_HANDLED; 3810 } 3811 3812 // Make sure the fallback event policy sees all keys that will be 3813 // delivered to the view hierarchy. 3814 mFallbackEventHandler.preDispatchKeyEvent(event); 3815 return FORWARD; 3816 } 3817 3818 private int processPointerEvent(QueuedInputEvent q) { 3819 final MotionEvent event = (MotionEvent)q.mEvent; 3820 3821 // Translate the pointer event for compatibility, if needed. 3822 if (mTranslator != null) { 3823 mTranslator.translateEventInScreenToAppWindow(event); 3824 } 3825 3826 // Enter touch mode on down or scroll. 3827 final int action = event.getAction(); 3828 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3829 ensureTouchMode(true); 3830 } 3831 3832 // Offset the scroll position. 3833 if (mCurScrollY != 0) { 3834 event.offsetLocation(0, mCurScrollY); 3835 } 3836 3837 // Remember the touch position for possible drag-initiation. 3838 if (event.isTouchEvent()) { 3839 mLastTouchPoint.x = event.getRawX(); 3840 mLastTouchPoint.y = event.getRawY(); 3841 } 3842 return FORWARD; 3843 } 3844 } 3845 3846 /** 3847 * Delivers post-ime input events to a native activity. 3848 */ 3849 final class NativePostImeInputStage extends AsyncInputStage 3850 implements InputQueue.FinishedInputEventCallback { 3851 public NativePostImeInputStage(InputStage next, String traceCounter) { 3852 super(next, traceCounter); 3853 } 3854 3855 @Override 3856 protected int onProcess(QueuedInputEvent q) { 3857 if (mInputQueue != null) { 3858 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3859 return DEFER; 3860 } 3861 return FORWARD; 3862 } 3863 3864 @Override 3865 public void onFinishedInputEvent(Object token, boolean handled) { 3866 QueuedInputEvent q = (QueuedInputEvent)token; 3867 if (handled) { 3868 finish(q, true); 3869 return; 3870 } 3871 forward(q); 3872 } 3873 } 3874 3875 /** 3876 * Delivers post-ime input events to the view hierarchy. 3877 */ 3878 final class ViewPostImeInputStage extends InputStage { 3879 public ViewPostImeInputStage(InputStage next) { 3880 super(next); 3881 } 3882 3883 @Override 3884 protected int onProcess(QueuedInputEvent q) { 3885 if (q.mEvent instanceof KeyEvent) { 3886 return processKeyEvent(q); 3887 } else { 3888 // If delivering a new non-key event, make sure the window is 3889 // now allowed to start updating. 3890 handleDispatchDoneAnimating(); 3891 final int source = q.mEvent.getSource(); 3892 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3893 return processPointerEvent(q); 3894 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3895 return processTrackballEvent(q); 3896 } else { 3897 return processGenericMotionEvent(q); 3898 } 3899 } 3900 } 3901 3902 @Override 3903 protected void onDeliverToNext(QueuedInputEvent q) { 3904 if (mUnbufferedInputDispatch 3905 && q.mEvent instanceof MotionEvent 3906 && ((MotionEvent)q.mEvent).isTouchEvent() 3907 && isTerminalInputEvent(q.mEvent)) { 3908 mUnbufferedInputDispatch = false; 3909 scheduleConsumeBatchedInput(); 3910 } 3911 super.onDeliverToNext(q); 3912 } 3913 3914 private int processKeyEvent(QueuedInputEvent q) { 3915 final KeyEvent event = (KeyEvent)q.mEvent; 3916 3917 if (event.getAction() != KeyEvent.ACTION_UP) { 3918 // If delivering a new key event, make sure the window is 3919 // now allowed to start updating. 3920 handleDispatchDoneAnimating(); 3921 } 3922 3923 // Deliver the key to the view hierarchy. 3924 if (mView.dispatchKeyEvent(event)) { 3925 return FINISH_HANDLED; 3926 } 3927 3928 if (shouldDropInputEvent(q)) { 3929 return FINISH_NOT_HANDLED; 3930 } 3931 3932 // If the Control modifier is held, try to interpret the key as a shortcut. 3933 if (event.getAction() == KeyEvent.ACTION_DOWN 3934 && event.isCtrlPressed() 3935 && event.getRepeatCount() == 0 3936 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3937 if (mView.dispatchKeyShortcutEvent(event)) { 3938 return FINISH_HANDLED; 3939 } 3940 if (shouldDropInputEvent(q)) { 3941 return FINISH_NOT_HANDLED; 3942 } 3943 } 3944 3945 // Apply the fallback event policy. 3946 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3947 return FINISH_HANDLED; 3948 } 3949 if (shouldDropInputEvent(q)) { 3950 return FINISH_NOT_HANDLED; 3951 } 3952 3953 // Handle automatic focus changes. 3954 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3955 int direction = 0; 3956 switch (event.getKeyCode()) { 3957 case KeyEvent.KEYCODE_DPAD_LEFT: 3958 if (event.hasNoModifiers()) { 3959 direction = View.FOCUS_LEFT; 3960 } 3961 break; 3962 case KeyEvent.KEYCODE_DPAD_RIGHT: 3963 if (event.hasNoModifiers()) { 3964 direction = View.FOCUS_RIGHT; 3965 } 3966 break; 3967 case KeyEvent.KEYCODE_DPAD_UP: 3968 if (event.hasNoModifiers()) { 3969 direction = View.FOCUS_UP; 3970 } 3971 break; 3972 case KeyEvent.KEYCODE_DPAD_DOWN: 3973 if (event.hasNoModifiers()) { 3974 direction = View.FOCUS_DOWN; 3975 } 3976 break; 3977 case KeyEvent.KEYCODE_TAB: 3978 if (event.hasNoModifiers()) { 3979 direction = View.FOCUS_FORWARD; 3980 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3981 direction = View.FOCUS_BACKWARD; 3982 } 3983 break; 3984 } 3985 if (direction != 0) { 3986 View focused = mView.findFocus(); 3987 if (focused != null) { 3988 View v = focused.focusSearch(direction); 3989 if (v != null && v != focused) { 3990 // do the math the get the interesting rect 3991 // of previous focused into the coord system of 3992 // newly focused view 3993 focused.getFocusedRect(mTempRect); 3994 if (mView instanceof ViewGroup) { 3995 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3996 focused, mTempRect); 3997 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3998 v, mTempRect); 3999 } 4000 if (v.requestFocus(direction, mTempRect)) { 4001 playSoundEffect(SoundEffectConstants 4002 .getContantForFocusDirection(direction)); 4003 return FINISH_HANDLED; 4004 } 4005 } 4006 4007 // Give the focused view a last chance to handle the dpad key. 4008 if (mView.dispatchUnhandledMove(focused, direction)) { 4009 return FINISH_HANDLED; 4010 } 4011 } else { 4012 // find the best view to give focus to in this non-touch-mode with no-focus 4013 View v = focusSearch(null, direction); 4014 if (v != null && v.requestFocus(direction)) { 4015 return FINISH_HANDLED; 4016 } 4017 } 4018 } 4019 } 4020 return FORWARD; 4021 } 4022 4023 private int processPointerEvent(QueuedInputEvent q) { 4024 final MotionEvent event = (MotionEvent)q.mEvent; 4025 4026 mAttachInfo.mUnbufferedDispatchRequested = false; 4027 boolean handled = mView.dispatchPointerEvent(event); 4028 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4029 mUnbufferedInputDispatch = true; 4030 if (mConsumeBatchedInputScheduled) { 4031 scheduleConsumeBatchedInputImmediately(); 4032 } 4033 } 4034 return handled ? FINISH_HANDLED : FORWARD; 4035 } 4036 4037 private int processTrackballEvent(QueuedInputEvent q) { 4038 final MotionEvent event = (MotionEvent)q.mEvent; 4039 4040 if (mView.dispatchTrackballEvent(event)) { 4041 return FINISH_HANDLED; 4042 } 4043 return FORWARD; 4044 } 4045 4046 private int processGenericMotionEvent(QueuedInputEvent q) { 4047 final MotionEvent event = (MotionEvent)q.mEvent; 4048 4049 // Deliver the event to the view. 4050 if (mView.dispatchGenericMotionEvent(event)) { 4051 return FINISH_HANDLED; 4052 } 4053 return FORWARD; 4054 } 4055 } 4056 4057 /** 4058 * Performs synthesis of new input events from unhandled input events. 4059 */ 4060 final class SyntheticInputStage extends InputStage { 4061 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4062 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4063 private final SyntheticTouchNavigationHandler mTouchNavigation = 4064 new SyntheticTouchNavigationHandler(); 4065 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4066 4067 public SyntheticInputStage() { 4068 super(null); 4069 } 4070 4071 @Override 4072 protected int onProcess(QueuedInputEvent q) { 4073 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4074 if (q.mEvent instanceof MotionEvent) { 4075 final MotionEvent event = (MotionEvent)q.mEvent; 4076 final int source = event.getSource(); 4077 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4078 mTrackball.process(event); 4079 return FINISH_HANDLED; 4080 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4081 mJoystick.process(event); 4082 return FINISH_HANDLED; 4083 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4084 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4085 mTouchNavigation.process(event); 4086 return FINISH_HANDLED; 4087 } 4088 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4089 mKeyboard.process((KeyEvent)q.mEvent); 4090 return FINISH_HANDLED; 4091 } 4092 4093 return FORWARD; 4094 } 4095 4096 @Override 4097 protected void onDeliverToNext(QueuedInputEvent q) { 4098 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4099 // Cancel related synthetic events if any prior stage has handled the event. 4100 if (q.mEvent instanceof MotionEvent) { 4101 final MotionEvent event = (MotionEvent)q.mEvent; 4102 final int source = event.getSource(); 4103 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4104 mTrackball.cancel(event); 4105 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4106 mJoystick.cancel(event); 4107 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4108 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4109 mTouchNavigation.cancel(event); 4110 } 4111 } 4112 } 4113 super.onDeliverToNext(q); 4114 } 4115 } 4116 4117 /** 4118 * Creates dpad events from unhandled trackball movements. 4119 */ 4120 final class SyntheticTrackballHandler { 4121 private final TrackballAxis mX = new TrackballAxis(); 4122 private final TrackballAxis mY = new TrackballAxis(); 4123 private long mLastTime; 4124 4125 public void process(MotionEvent event) { 4126 // Translate the trackball event into DPAD keys and try to deliver those. 4127 long curTime = SystemClock.uptimeMillis(); 4128 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4129 // It has been too long since the last movement, 4130 // so restart at the beginning. 4131 mX.reset(0); 4132 mY.reset(0); 4133 mLastTime = curTime; 4134 } 4135 4136 final int action = event.getAction(); 4137 final int metaState = event.getMetaState(); 4138 switch (action) { 4139 case MotionEvent.ACTION_DOWN: 4140 mX.reset(2); 4141 mY.reset(2); 4142 enqueueInputEvent(new KeyEvent(curTime, curTime, 4143 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4144 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4145 InputDevice.SOURCE_KEYBOARD)); 4146 break; 4147 case MotionEvent.ACTION_UP: 4148 mX.reset(2); 4149 mY.reset(2); 4150 enqueueInputEvent(new KeyEvent(curTime, curTime, 4151 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4152 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4153 InputDevice.SOURCE_KEYBOARD)); 4154 break; 4155 } 4156 4157 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4158 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4159 + " move=" + event.getX() 4160 + " / Y=" + mY.position + " step=" 4161 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4162 + " move=" + event.getY()); 4163 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4164 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4165 4166 // Generate DPAD events based on the trackball movement. 4167 // We pick the axis that has moved the most as the direction of 4168 // the DPAD. When we generate DPAD events for one axis, then the 4169 // other axis is reset -- we don't want to perform DPAD jumps due 4170 // to slight movements in the trackball when making major movements 4171 // along the other axis. 4172 int keycode = 0; 4173 int movement = 0; 4174 float accel = 1; 4175 if (xOff > yOff) { 4176 movement = mX.generate(); 4177 if (movement != 0) { 4178 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4179 : KeyEvent.KEYCODE_DPAD_LEFT; 4180 accel = mX.acceleration; 4181 mY.reset(2); 4182 } 4183 } else if (yOff > 0) { 4184 movement = mY.generate(); 4185 if (movement != 0) { 4186 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4187 : KeyEvent.KEYCODE_DPAD_UP; 4188 accel = mY.acceleration; 4189 mX.reset(2); 4190 } 4191 } 4192 4193 if (keycode != 0) { 4194 if (movement < 0) movement = -movement; 4195 int accelMovement = (int)(movement * accel); 4196 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4197 + " accelMovement=" + accelMovement 4198 + " accel=" + accel); 4199 if (accelMovement > movement) { 4200 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4201 + keycode); 4202 movement--; 4203 int repeatCount = accelMovement - movement; 4204 enqueueInputEvent(new KeyEvent(curTime, curTime, 4205 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4206 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4207 InputDevice.SOURCE_KEYBOARD)); 4208 } 4209 while (movement > 0) { 4210 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4211 + keycode); 4212 movement--; 4213 curTime = SystemClock.uptimeMillis(); 4214 enqueueInputEvent(new KeyEvent(curTime, curTime, 4215 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4216 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4217 InputDevice.SOURCE_KEYBOARD)); 4218 enqueueInputEvent(new KeyEvent(curTime, curTime, 4219 KeyEvent.ACTION_UP, keycode, 0, metaState, 4220 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4221 InputDevice.SOURCE_KEYBOARD)); 4222 } 4223 mLastTime = curTime; 4224 } 4225 } 4226 4227 public void cancel(MotionEvent event) { 4228 mLastTime = Integer.MIN_VALUE; 4229 4230 // If we reach this, we consumed a trackball event. 4231 // Because we will not translate the trackball event into a key event, 4232 // touch mode will not exit, so we exit touch mode here. 4233 if (mView != null && mAdded) { 4234 ensureTouchMode(false); 4235 } 4236 } 4237 } 4238 4239 /** 4240 * Maintains state information for a single trackball axis, generating 4241 * discrete (DPAD) movements based on raw trackball motion. 4242 */ 4243 static final class TrackballAxis { 4244 /** 4245 * The maximum amount of acceleration we will apply. 4246 */ 4247 static final float MAX_ACCELERATION = 20; 4248 4249 /** 4250 * The maximum amount of time (in milliseconds) between events in order 4251 * for us to consider the user to be doing fast trackball movements, 4252 * and thus apply an acceleration. 4253 */ 4254 static final long FAST_MOVE_TIME = 150; 4255 4256 /** 4257 * Scaling factor to the time (in milliseconds) between events to how 4258 * much to multiple/divide the current acceleration. When movement 4259 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4260 * FAST_MOVE_TIME it divides it. 4261 */ 4262 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4263 4264 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4265 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4266 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4267 4268 float position; 4269 float acceleration = 1; 4270 long lastMoveTime = 0; 4271 int step; 4272 int dir; 4273 int nonAccelMovement; 4274 4275 void reset(int _step) { 4276 position = 0; 4277 acceleration = 1; 4278 lastMoveTime = 0; 4279 step = _step; 4280 dir = 0; 4281 } 4282 4283 /** 4284 * Add trackball movement into the state. If the direction of movement 4285 * has been reversed, the state is reset before adding the 4286 * movement (so that you don't have to compensate for any previously 4287 * collected movement before see the result of the movement in the 4288 * new direction). 4289 * 4290 * @return Returns the absolute value of the amount of movement 4291 * collected so far. 4292 */ 4293 float collect(float off, long time, String axis) { 4294 long normTime; 4295 if (off > 0) { 4296 normTime = (long)(off * FAST_MOVE_TIME); 4297 if (dir < 0) { 4298 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4299 position = 0; 4300 step = 0; 4301 acceleration = 1; 4302 lastMoveTime = 0; 4303 } 4304 dir = 1; 4305 } else if (off < 0) { 4306 normTime = (long)((-off) * FAST_MOVE_TIME); 4307 if (dir > 0) { 4308 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4309 position = 0; 4310 step = 0; 4311 acceleration = 1; 4312 lastMoveTime = 0; 4313 } 4314 dir = -1; 4315 } else { 4316 normTime = 0; 4317 } 4318 4319 // The number of milliseconds between each movement that is 4320 // considered "normal" and will not result in any acceleration 4321 // or deceleration, scaled by the offset we have here. 4322 if (normTime > 0) { 4323 long delta = time - lastMoveTime; 4324 lastMoveTime = time; 4325 float acc = acceleration; 4326 if (delta < normTime) { 4327 // The user is scrolling rapidly, so increase acceleration. 4328 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4329 if (scale > 1) acc *= scale; 4330 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4331 + off + " normTime=" + normTime + " delta=" + delta 4332 + " scale=" + scale + " acc=" + acc); 4333 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4334 } else { 4335 // The user is scrolling slowly, so decrease acceleration. 4336 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4337 if (scale > 1) acc /= scale; 4338 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4339 + off + " normTime=" + normTime + " delta=" + delta 4340 + " scale=" + scale + " acc=" + acc); 4341 acceleration = acc > 1 ? acc : 1; 4342 } 4343 } 4344 position += off; 4345 return Math.abs(position); 4346 } 4347 4348 /** 4349 * Generate the number of discrete movement events appropriate for 4350 * the currently collected trackball movement. 4351 * 4352 * @return Returns the number of discrete movements, either positive 4353 * or negative, or 0 if there is not enough trackball movement yet 4354 * for a discrete movement. 4355 */ 4356 int generate() { 4357 int movement = 0; 4358 nonAccelMovement = 0; 4359 do { 4360 final int dir = position >= 0 ? 1 : -1; 4361 switch (step) { 4362 // If we are going to execute the first step, then we want 4363 // to do this as soon as possible instead of waiting for 4364 // a full movement, in order to make things look responsive. 4365 case 0: 4366 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4367 return movement; 4368 } 4369 movement += dir; 4370 nonAccelMovement += dir; 4371 step = 1; 4372 break; 4373 // If we have generated the first movement, then we need 4374 // to wait for the second complete trackball motion before 4375 // generating the second discrete movement. 4376 case 1: 4377 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4378 return movement; 4379 } 4380 movement += dir; 4381 nonAccelMovement += dir; 4382 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4383 step = 2; 4384 break; 4385 // After the first two, we generate discrete movements 4386 // consistently with the trackball, applying an acceleration 4387 // if the trackball is moving quickly. This is a simple 4388 // acceleration on top of what we already compute based 4389 // on how quickly the wheel is being turned, to apply 4390 // a longer increasing acceleration to continuous movement 4391 // in one direction. 4392 default: 4393 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4394 return movement; 4395 } 4396 movement += dir; 4397 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4398 float acc = acceleration; 4399 acc *= 1.1f; 4400 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4401 break; 4402 } 4403 } while (true); 4404 } 4405 } 4406 4407 /** 4408 * Creates dpad events from unhandled joystick movements. 4409 */ 4410 final class SyntheticJoystickHandler extends Handler { 4411 private final static String TAG = "SyntheticJoystickHandler"; 4412 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4413 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4414 4415 private int mLastXDirection; 4416 private int mLastYDirection; 4417 private int mLastXKeyCode; 4418 private int mLastYKeyCode; 4419 4420 public SyntheticJoystickHandler() { 4421 super(true); 4422 } 4423 4424 @Override 4425 public void handleMessage(Message msg) { 4426 switch (msg.what) { 4427 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4428 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4429 KeyEvent oldEvent = (KeyEvent)msg.obj; 4430 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4431 SystemClock.uptimeMillis(), 4432 oldEvent.getRepeatCount() + 1); 4433 if (mAttachInfo.mHasWindowFocus) { 4434 enqueueInputEvent(e); 4435 Message m = obtainMessage(msg.what, e); 4436 m.setAsynchronous(true); 4437 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4438 } 4439 } break; 4440 } 4441 } 4442 4443 public void process(MotionEvent event) { 4444 switch(event.getActionMasked()) { 4445 case MotionEvent.ACTION_CANCEL: 4446 cancel(event); 4447 break; 4448 case MotionEvent.ACTION_MOVE: 4449 update(event, true); 4450 break; 4451 default: 4452 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4453 } 4454 } 4455 4456 private void cancel(MotionEvent event) { 4457 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4458 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4459 update(event, false); 4460 } 4461 4462 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4463 final long time = event.getEventTime(); 4464 final int metaState = event.getMetaState(); 4465 final int deviceId = event.getDeviceId(); 4466 final int source = event.getSource(); 4467 4468 int xDirection = joystickAxisValueToDirection( 4469 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4470 if (xDirection == 0) { 4471 xDirection = joystickAxisValueToDirection(event.getX()); 4472 } 4473 4474 int yDirection = joystickAxisValueToDirection( 4475 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4476 if (yDirection == 0) { 4477 yDirection = joystickAxisValueToDirection(event.getY()); 4478 } 4479 4480 if (xDirection != mLastXDirection) { 4481 if (mLastXKeyCode != 0) { 4482 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4483 enqueueInputEvent(new KeyEvent(time, time, 4484 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4485 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4486 mLastXKeyCode = 0; 4487 } 4488 4489 mLastXDirection = xDirection; 4490 4491 if (xDirection != 0 && synthesizeNewKeys) { 4492 mLastXKeyCode = xDirection > 0 4493 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4494 final KeyEvent e = new KeyEvent(time, time, 4495 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4496 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4497 enqueueInputEvent(e); 4498 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4499 m.setAsynchronous(true); 4500 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4501 } 4502 } 4503 4504 if (yDirection != mLastYDirection) { 4505 if (mLastYKeyCode != 0) { 4506 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4507 enqueueInputEvent(new KeyEvent(time, time, 4508 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4509 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4510 mLastYKeyCode = 0; 4511 } 4512 4513 mLastYDirection = yDirection; 4514 4515 if (yDirection != 0 && synthesizeNewKeys) { 4516 mLastYKeyCode = yDirection > 0 4517 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4518 final KeyEvent e = new KeyEvent(time, time, 4519 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4520 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4521 enqueueInputEvent(e); 4522 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4523 m.setAsynchronous(true); 4524 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4525 } 4526 } 4527 } 4528 4529 private int joystickAxisValueToDirection(float value) { 4530 if (value >= 0.5f) { 4531 return 1; 4532 } else if (value <= -0.5f) { 4533 return -1; 4534 } else { 4535 return 0; 4536 } 4537 } 4538 } 4539 4540 /** 4541 * Creates dpad events from unhandled touch navigation movements. 4542 */ 4543 final class SyntheticTouchNavigationHandler extends Handler { 4544 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4545 private static final boolean LOCAL_DEBUG = false; 4546 4547 // Assumed nominal width and height in millimeters of a touch navigation pad, 4548 // if no resolution information is available from the input system. 4549 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4550 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4551 4552 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4553 4554 // The nominal distance traveled to move by one unit. 4555 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4556 4557 // Minimum and maximum fling velocity in ticks per second. 4558 // The minimum velocity should be set such that we perform enough ticks per 4559 // second that the fling appears to be fluid. For example, if we set the minimum 4560 // to 2 ticks per second, then there may be up to half a second delay between the next 4561 // to last and last ticks which is noticeably discrete and jerky. This value should 4562 // probably not be set to anything less than about 4. 4563 // If fling accuracy is a problem then consider tuning the tick distance instead. 4564 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4565 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4566 4567 // Fling velocity decay factor applied after each new key is emitted. 4568 // This parameter controls the deceleration and overall duration of the fling. 4569 // The fling stops automatically when its velocity drops below the minimum 4570 // fling velocity defined above. 4571 private static final float FLING_TICK_DECAY = 0.8f; 4572 4573 /* The input device that we are tracking. */ 4574 4575 private int mCurrentDeviceId = -1; 4576 private int mCurrentSource; 4577 private boolean mCurrentDeviceSupported; 4578 4579 /* Configuration for the current input device. */ 4580 4581 // The scaled tick distance. A movement of this amount should generally translate 4582 // into a single dpad event in a given direction. 4583 private float mConfigTickDistance; 4584 4585 // The minimum and maximum scaled fling velocity. 4586 private float mConfigMinFlingVelocity; 4587 private float mConfigMaxFlingVelocity; 4588 4589 /* Tracking state. */ 4590 4591 // The velocity tracker for detecting flings. 4592 private VelocityTracker mVelocityTracker; 4593 4594 // The active pointer id, or -1 if none. 4595 private int mActivePointerId = -1; 4596 4597 // Location where tracking started. 4598 private float mStartX; 4599 private float mStartY; 4600 4601 // Most recently observed position. 4602 private float mLastX; 4603 private float mLastY; 4604 4605 // Accumulated movement delta since the last direction key was sent. 4606 private float mAccumulatedX; 4607 private float mAccumulatedY; 4608 4609 // Set to true if any movement was delivered to the app. 4610 // Implies that tap slop was exceeded. 4611 private boolean mConsumedMovement; 4612 4613 // The most recently sent key down event. 4614 // The keycode remains set until the direction changes or a fling ends 4615 // so that repeated key events may be generated as required. 4616 private long mPendingKeyDownTime; 4617 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4618 private int mPendingKeyRepeatCount; 4619 private int mPendingKeyMetaState; 4620 4621 // The current fling velocity while a fling is in progress. 4622 private boolean mFlinging; 4623 private float mFlingVelocity; 4624 4625 public SyntheticTouchNavigationHandler() { 4626 super(true); 4627 } 4628 4629 public void process(MotionEvent event) { 4630 // Update the current device information. 4631 final long time = event.getEventTime(); 4632 final int deviceId = event.getDeviceId(); 4633 final int source = event.getSource(); 4634 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4635 finishKeys(time); 4636 finishTracking(time); 4637 mCurrentDeviceId = deviceId; 4638 mCurrentSource = source; 4639 mCurrentDeviceSupported = false; 4640 InputDevice device = event.getDevice(); 4641 if (device != null) { 4642 // In order to support an input device, we must know certain 4643 // characteristics about it, such as its size and resolution. 4644 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4645 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4646 if (xRange != null && yRange != null) { 4647 mCurrentDeviceSupported = true; 4648 4649 // Infer the resolution if it not actually known. 4650 float xRes = xRange.getResolution(); 4651 if (xRes <= 0) { 4652 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4653 } 4654 float yRes = yRange.getResolution(); 4655 if (yRes <= 0) { 4656 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4657 } 4658 float nominalRes = (xRes + yRes) * 0.5f; 4659 4660 // Precompute all of the configuration thresholds we will need. 4661 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4662 mConfigMinFlingVelocity = 4663 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4664 mConfigMaxFlingVelocity = 4665 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4666 4667 if (LOCAL_DEBUG) { 4668 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4669 + " (" + Integer.toHexString(mCurrentSource) + "): " 4670 + ", mConfigTickDistance=" + mConfigTickDistance 4671 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4672 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4673 } 4674 } 4675 } 4676 } 4677 if (!mCurrentDeviceSupported) { 4678 return; 4679 } 4680 4681 // Handle the event. 4682 final int action = event.getActionMasked(); 4683 switch (action) { 4684 case MotionEvent.ACTION_DOWN: { 4685 boolean caughtFling = mFlinging; 4686 finishKeys(time); 4687 finishTracking(time); 4688 mActivePointerId = event.getPointerId(0); 4689 mVelocityTracker = VelocityTracker.obtain(); 4690 mVelocityTracker.addMovement(event); 4691 mStartX = event.getX(); 4692 mStartY = event.getY(); 4693 mLastX = mStartX; 4694 mLastY = mStartY; 4695 mAccumulatedX = 0; 4696 mAccumulatedY = 0; 4697 4698 // If we caught a fling, then pretend that the tap slop has already 4699 // been exceeded to suppress taps whose only purpose is to stop the fling. 4700 mConsumedMovement = caughtFling; 4701 break; 4702 } 4703 4704 case MotionEvent.ACTION_MOVE: 4705 case MotionEvent.ACTION_UP: { 4706 if (mActivePointerId < 0) { 4707 break; 4708 } 4709 final int index = event.findPointerIndex(mActivePointerId); 4710 if (index < 0) { 4711 finishKeys(time); 4712 finishTracking(time); 4713 break; 4714 } 4715 4716 mVelocityTracker.addMovement(event); 4717 final float x = event.getX(index); 4718 final float y = event.getY(index); 4719 mAccumulatedX += x - mLastX; 4720 mAccumulatedY += y - mLastY; 4721 mLastX = x; 4722 mLastY = y; 4723 4724 // Consume any accumulated movement so far. 4725 final int metaState = event.getMetaState(); 4726 consumeAccumulatedMovement(time, metaState); 4727 4728 // Detect taps and flings. 4729 if (action == MotionEvent.ACTION_UP) { 4730 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4731 // It might be a fling. 4732 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4733 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4734 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4735 if (!startFling(time, vx, vy)) { 4736 finishKeys(time); 4737 } 4738 } 4739 finishTracking(time); 4740 } 4741 break; 4742 } 4743 4744 case MotionEvent.ACTION_CANCEL: { 4745 finishKeys(time); 4746 finishTracking(time); 4747 break; 4748 } 4749 } 4750 } 4751 4752 public void cancel(MotionEvent event) { 4753 if (mCurrentDeviceId == event.getDeviceId() 4754 && mCurrentSource == event.getSource()) { 4755 final long time = event.getEventTime(); 4756 finishKeys(time); 4757 finishTracking(time); 4758 } 4759 } 4760 4761 private void finishKeys(long time) { 4762 cancelFling(); 4763 sendKeyUp(time); 4764 } 4765 4766 private void finishTracking(long time) { 4767 if (mActivePointerId >= 0) { 4768 mActivePointerId = -1; 4769 mVelocityTracker.recycle(); 4770 mVelocityTracker = null; 4771 } 4772 } 4773 4774 private void consumeAccumulatedMovement(long time, int metaState) { 4775 final float absX = Math.abs(mAccumulatedX); 4776 final float absY = Math.abs(mAccumulatedY); 4777 if (absX >= absY) { 4778 if (absX >= mConfigTickDistance) { 4779 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4780 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4781 mAccumulatedY = 0; 4782 mConsumedMovement = true; 4783 } 4784 } else { 4785 if (absY >= mConfigTickDistance) { 4786 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4787 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4788 mAccumulatedX = 0; 4789 mConsumedMovement = true; 4790 } 4791 } 4792 } 4793 4794 private float consumeAccumulatedMovement(long time, int metaState, 4795 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4796 while (accumulator <= -mConfigTickDistance) { 4797 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4798 accumulator += mConfigTickDistance; 4799 } 4800 while (accumulator >= mConfigTickDistance) { 4801 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4802 accumulator -= mConfigTickDistance; 4803 } 4804 return accumulator; 4805 } 4806 4807 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4808 if (mPendingKeyCode != keyCode) { 4809 sendKeyUp(time); 4810 mPendingKeyDownTime = time; 4811 mPendingKeyCode = keyCode; 4812 mPendingKeyRepeatCount = 0; 4813 } else { 4814 mPendingKeyRepeatCount += 1; 4815 } 4816 mPendingKeyMetaState = metaState; 4817 4818 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4819 // but it doesn't quite make sense when simulating the events in this way. 4820 if (LOCAL_DEBUG) { 4821 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4822 + ", repeatCount=" + mPendingKeyRepeatCount 4823 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4824 } 4825 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4826 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4827 mPendingKeyMetaState, mCurrentDeviceId, 4828 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4829 } 4830 4831 private void sendKeyUp(long time) { 4832 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4833 if (LOCAL_DEBUG) { 4834 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4835 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4836 } 4837 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4838 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4839 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4840 mCurrentSource)); 4841 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4842 } 4843 } 4844 4845 private boolean startFling(long time, float vx, float vy) { 4846 if (LOCAL_DEBUG) { 4847 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4848 + ", min=" + mConfigMinFlingVelocity); 4849 } 4850 4851 // Flings must be oriented in the same direction as the preceding movements. 4852 switch (mPendingKeyCode) { 4853 case KeyEvent.KEYCODE_DPAD_LEFT: 4854 if (-vx >= mConfigMinFlingVelocity 4855 && Math.abs(vy) < mConfigMinFlingVelocity) { 4856 mFlingVelocity = -vx; 4857 break; 4858 } 4859 return false; 4860 4861 case KeyEvent.KEYCODE_DPAD_RIGHT: 4862 if (vx >= mConfigMinFlingVelocity 4863 && Math.abs(vy) < mConfigMinFlingVelocity) { 4864 mFlingVelocity = vx; 4865 break; 4866 } 4867 return false; 4868 4869 case KeyEvent.KEYCODE_DPAD_UP: 4870 if (-vy >= mConfigMinFlingVelocity 4871 && Math.abs(vx) < mConfigMinFlingVelocity) { 4872 mFlingVelocity = -vy; 4873 break; 4874 } 4875 return false; 4876 4877 case KeyEvent.KEYCODE_DPAD_DOWN: 4878 if (vy >= mConfigMinFlingVelocity 4879 && Math.abs(vx) < mConfigMinFlingVelocity) { 4880 mFlingVelocity = vy; 4881 break; 4882 } 4883 return false; 4884 } 4885 4886 // Post the first fling event. 4887 mFlinging = postFling(time); 4888 return mFlinging; 4889 } 4890 4891 private boolean postFling(long time) { 4892 // The idea here is to estimate the time when the pointer would have 4893 // traveled one tick distance unit given the current fling velocity. 4894 // This effect creates continuity of motion. 4895 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4896 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4897 postAtTime(mFlingRunnable, time + delay); 4898 if (LOCAL_DEBUG) { 4899 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4900 + mFlingVelocity + ", delay=" + delay 4901 + ", keyCode=" + mPendingKeyCode); 4902 } 4903 return true; 4904 } 4905 return false; 4906 } 4907 4908 private void cancelFling() { 4909 if (mFlinging) { 4910 removeCallbacks(mFlingRunnable); 4911 mFlinging = false; 4912 } 4913 } 4914 4915 private final Runnable mFlingRunnable = new Runnable() { 4916 @Override 4917 public void run() { 4918 final long time = SystemClock.uptimeMillis(); 4919 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4920 mFlingVelocity *= FLING_TICK_DECAY; 4921 if (!postFling(time)) { 4922 mFlinging = false; 4923 finishKeys(time); 4924 } 4925 } 4926 }; 4927 } 4928 4929 final class SyntheticKeyboardHandler { 4930 public void process(KeyEvent event) { 4931 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 4932 return; 4933 } 4934 4935 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 4936 final int keyCode = event.getKeyCode(); 4937 final int metaState = event.getMetaState(); 4938 4939 // Check for fallback actions specified by the key character map. 4940 KeyCharacterMap.FallbackAction fallbackAction = 4941 kcm.getFallbackAction(keyCode, metaState); 4942 if (fallbackAction != null) { 4943 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 4944 KeyEvent fallbackEvent = KeyEvent.obtain( 4945 event.getDownTime(), event.getEventTime(), 4946 event.getAction(), fallbackAction.keyCode, 4947 event.getRepeatCount(), fallbackAction.metaState, 4948 event.getDeviceId(), event.getScanCode(), 4949 flags, event.getSource(), null); 4950 fallbackAction.recycle(); 4951 enqueueInputEvent(fallbackEvent); 4952 } 4953 } 4954 } 4955 4956 /** 4957 * Returns true if the key is used for keyboard navigation. 4958 * @param keyEvent The key event. 4959 * @return True if the key is used for keyboard navigation. 4960 */ 4961 private static boolean isNavigationKey(KeyEvent keyEvent) { 4962 switch (keyEvent.getKeyCode()) { 4963 case KeyEvent.KEYCODE_DPAD_LEFT: 4964 case KeyEvent.KEYCODE_DPAD_RIGHT: 4965 case KeyEvent.KEYCODE_DPAD_UP: 4966 case KeyEvent.KEYCODE_DPAD_DOWN: 4967 case KeyEvent.KEYCODE_DPAD_CENTER: 4968 case KeyEvent.KEYCODE_PAGE_UP: 4969 case KeyEvent.KEYCODE_PAGE_DOWN: 4970 case KeyEvent.KEYCODE_MOVE_HOME: 4971 case KeyEvent.KEYCODE_MOVE_END: 4972 case KeyEvent.KEYCODE_TAB: 4973 case KeyEvent.KEYCODE_SPACE: 4974 case KeyEvent.KEYCODE_ENTER: 4975 return true; 4976 } 4977 return false; 4978 } 4979 4980 /** 4981 * Returns true if the key is used for typing. 4982 * @param keyEvent The key event. 4983 * @return True if the key is used for typing. 4984 */ 4985 private static boolean isTypingKey(KeyEvent keyEvent) { 4986 return keyEvent.getUnicodeChar() > 0; 4987 } 4988 4989 /** 4990 * See if the key event means we should leave touch mode (and leave touch mode if so). 4991 * @param event The key event. 4992 * @return Whether this key event should be consumed (meaning the act of 4993 * leaving touch mode alone is considered the event). 4994 */ 4995 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4996 // Only relevant in touch mode. 4997 if (!mAttachInfo.mInTouchMode) { 4998 return false; 4999 } 5000 5001 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5002 final int action = event.getAction(); 5003 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5004 return false; 5005 } 5006 5007 // Don't leave touch mode if the IME told us not to. 5008 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5009 return false; 5010 } 5011 5012 // If the key can be used for keyboard navigation then leave touch mode 5013 // and select a focused view if needed (in ensureTouchMode). 5014 // When a new focused view is selected, we consume the navigation key because 5015 // navigation doesn't make much sense unless a view already has focus so 5016 // the key's purpose is to set focus. 5017 if (isNavigationKey(event)) { 5018 return ensureTouchMode(false); 5019 } 5020 5021 // If the key can be used for typing then leave touch mode 5022 // and select a focused view if needed (in ensureTouchMode). 5023 // Always allow the view to process the typing key. 5024 if (isTypingKey(event)) { 5025 ensureTouchMode(false); 5026 return false; 5027 } 5028 5029 return false; 5030 } 5031 5032 /* drag/drop */ 5033 void setLocalDragState(Object obj) { 5034 mLocalDragState = obj; 5035 } 5036 5037 private void handleDragEvent(DragEvent event) { 5038 // From the root, only drag start/end/location are dispatched. entered/exited 5039 // are determined and dispatched by the viewgroup hierarchy, who then report 5040 // that back here for ultimate reporting back to the framework. 5041 if (mView != null && mAdded) { 5042 final int what = event.mAction; 5043 5044 if (what == DragEvent.ACTION_DRAG_EXITED) { 5045 // A direct EXITED event means that the window manager knows we've just crossed 5046 // a window boundary, so the current drag target within this one must have 5047 // just been exited. Send it the usual notifications and then we're done 5048 // for now. 5049 mView.dispatchDragEvent(event); 5050 } else { 5051 // Cache the drag description when the operation starts, then fill it in 5052 // on subsequent calls as a convenience 5053 if (what == DragEvent.ACTION_DRAG_STARTED) { 5054 mCurrentDragView = null; // Start the current-recipient tracking 5055 mDragDescription = event.mClipDescription; 5056 } else { 5057 event.mClipDescription = mDragDescription; 5058 } 5059 5060 // For events with a [screen] location, translate into window coordinates 5061 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5062 mDragPoint.set(event.mX, event.mY); 5063 if (mTranslator != null) { 5064 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5065 } 5066 5067 if (mCurScrollY != 0) { 5068 mDragPoint.offset(0, mCurScrollY); 5069 } 5070 5071 event.mX = mDragPoint.x; 5072 event.mY = mDragPoint.y; 5073 } 5074 5075 // Remember who the current drag target is pre-dispatch 5076 final View prevDragView = mCurrentDragView; 5077 5078 // Now dispatch the drag/drop event 5079 boolean result = mView.dispatchDragEvent(event); 5080 5081 // If we changed apparent drag target, tell the OS about it 5082 if (prevDragView != mCurrentDragView) { 5083 try { 5084 if (prevDragView != null) { 5085 mWindowSession.dragRecipientExited(mWindow); 5086 } 5087 if (mCurrentDragView != null) { 5088 mWindowSession.dragRecipientEntered(mWindow); 5089 } 5090 } catch (RemoteException e) { 5091 Slog.e(TAG, "Unable to note drag target change"); 5092 } 5093 } 5094 5095 // Report the drop result when we're done 5096 if (what == DragEvent.ACTION_DROP) { 5097 mDragDescription = null; 5098 try { 5099 Log.i(TAG, "Reporting drop result: " + result); 5100 mWindowSession.reportDropResult(mWindow, result); 5101 } catch (RemoteException e) { 5102 Log.e(TAG, "Unable to report drop result"); 5103 } 5104 } 5105 5106 // When the drag operation ends, release any local state object 5107 // that may have been in use 5108 if (what == DragEvent.ACTION_DRAG_ENDED) { 5109 setLocalDragState(null); 5110 } 5111 } 5112 } 5113 event.recycle(); 5114 } 5115 5116 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5117 if (mSeq != args.seq) { 5118 // The sequence has changed, so we need to update our value and make 5119 // sure to do a traversal afterward so the window manager is given our 5120 // most recent data. 5121 mSeq = args.seq; 5122 mAttachInfo.mForceReportNewAttributes = true; 5123 scheduleTraversals(); 5124 } 5125 if (mView == null) return; 5126 if (args.localChanges != 0) { 5127 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5128 } 5129 5130 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5131 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5132 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5133 mView.dispatchSystemUiVisibilityChanged(visibility); 5134 } 5135 } 5136 5137 public void handleDispatchDoneAnimating() { 5138 if (mWindowsAnimating) { 5139 mWindowsAnimating = false; 5140 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5141 scheduleTraversals(); 5142 } 5143 } 5144 } 5145 5146 public void getLastTouchPoint(Point outLocation) { 5147 outLocation.x = (int) mLastTouchPoint.x; 5148 outLocation.y = (int) mLastTouchPoint.y; 5149 } 5150 5151 public void setDragFocus(View newDragTarget) { 5152 if (mCurrentDragView != newDragTarget) { 5153 mCurrentDragView = newDragTarget; 5154 } 5155 } 5156 5157 private AudioManager getAudioManager() { 5158 if (mView == null) { 5159 throw new IllegalStateException("getAudioManager called when there is no mView"); 5160 } 5161 if (mAudioManager == null) { 5162 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5163 } 5164 return mAudioManager; 5165 } 5166 5167 public AccessibilityInteractionController getAccessibilityInteractionController() { 5168 if (mView == null) { 5169 throw new IllegalStateException("getAccessibilityInteractionController" 5170 + " called when there is no mView"); 5171 } 5172 if (mAccessibilityInteractionController == null) { 5173 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5174 } 5175 return mAccessibilityInteractionController; 5176 } 5177 5178 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5179 boolean insetsPending) throws RemoteException { 5180 5181 float appScale = mAttachInfo.mApplicationScale; 5182 boolean restore = false; 5183 if (params != null && mTranslator != null) { 5184 restore = true; 5185 params.backup(); 5186 mTranslator.translateWindowLayout(params); 5187 } 5188 if (params != null) { 5189 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5190 } 5191 mPendingConfiguration.seq = 0; 5192 //Log.d(TAG, ">>>>>> CALLING relayout"); 5193 if (params != null && mOrigWindowType != params.type) { 5194 // For compatibility with old apps, don't crash here. 5195 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5196 Slog.w(TAG, "Window type can not be changed after " 5197 + "the window is added; ignoring change of " + mView); 5198 params.type = mOrigWindowType; 5199 } 5200 } 5201 int relayoutResult = mWindowSession.relayout( 5202 mWindow, mSeq, params, 5203 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5204 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5205 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5206 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5207 mPendingStableInsets, mPendingConfiguration, mSurface); 5208 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5209 if (restore) { 5210 params.restore(); 5211 } 5212 5213 if (mTranslator != null) { 5214 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5215 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5216 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5217 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5218 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5219 } 5220 return relayoutResult; 5221 } 5222 5223 /** 5224 * {@inheritDoc} 5225 */ 5226 @Override 5227 public void playSoundEffect(int effectId) { 5228 checkThread(); 5229 5230 if (mMediaDisabled) { 5231 return; 5232 } 5233 5234 try { 5235 final AudioManager audioManager = getAudioManager(); 5236 5237 switch (effectId) { 5238 case SoundEffectConstants.CLICK: 5239 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5240 return; 5241 case SoundEffectConstants.NAVIGATION_DOWN: 5242 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5243 return; 5244 case SoundEffectConstants.NAVIGATION_LEFT: 5245 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5246 return; 5247 case SoundEffectConstants.NAVIGATION_RIGHT: 5248 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5249 return; 5250 case SoundEffectConstants.NAVIGATION_UP: 5251 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5252 return; 5253 default: 5254 throw new IllegalArgumentException("unknown effect id " + effectId + 5255 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5256 } 5257 } catch (IllegalStateException e) { 5258 // Exception thrown by getAudioManager() when mView is null 5259 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5260 e.printStackTrace(); 5261 } 5262 } 5263 5264 /** 5265 * {@inheritDoc} 5266 */ 5267 @Override 5268 public boolean performHapticFeedback(int effectId, boolean always) { 5269 try { 5270 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5271 } catch (RemoteException e) { 5272 return false; 5273 } 5274 } 5275 5276 /** 5277 * {@inheritDoc} 5278 */ 5279 @Override 5280 public View focusSearch(View focused, int direction) { 5281 checkThread(); 5282 if (!(mView instanceof ViewGroup)) { 5283 return null; 5284 } 5285 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5286 } 5287 5288 public void debug() { 5289 mView.debug(); 5290 } 5291 5292 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5293 String innerPrefix = prefix + " "; 5294 writer.print(prefix); writer.println("ViewRoot:"); 5295 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5296 writer.print(" mRemoved="); writer.println(mRemoved); 5297 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5298 writer.println(mConsumeBatchedInputScheduled); 5299 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5300 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5301 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5302 writer.println(mPendingInputEventCount); 5303 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5304 writer.println(mProcessInputEventsScheduled); 5305 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5306 writer.print(mTraversalScheduled); 5307 if (mTraversalScheduled) { 5308 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5309 } else { 5310 writer.println(); 5311 } 5312 mFirstInputStage.dump(innerPrefix, writer); 5313 5314 mChoreographer.dump(prefix, writer); 5315 5316 writer.print(prefix); writer.println("View Hierarchy:"); 5317 dumpViewHierarchy(innerPrefix, writer, mView); 5318 } 5319 5320 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5321 writer.print(prefix); 5322 if (view == null) { 5323 writer.println("null"); 5324 return; 5325 } 5326 writer.println(view.toString()); 5327 if (!(view instanceof ViewGroup)) { 5328 return; 5329 } 5330 ViewGroup grp = (ViewGroup)view; 5331 final int N = grp.getChildCount(); 5332 if (N <= 0) { 5333 return; 5334 } 5335 prefix = prefix + " "; 5336 for (int i=0; i<N; i++) { 5337 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5338 } 5339 } 5340 5341 public void dumpGfxInfo(int[] info) { 5342 info[0] = info[1] = 0; 5343 if (mView != null) { 5344 getGfxInfo(mView, info); 5345 } 5346 } 5347 5348 private static void getGfxInfo(View view, int[] info) { 5349 RenderNode renderNode = view.mRenderNode; 5350 info[0]++; 5351 if (renderNode != null) { 5352 info[1] += renderNode.getDebugSize(); 5353 } 5354 5355 if (view instanceof ViewGroup) { 5356 ViewGroup group = (ViewGroup) view; 5357 5358 int count = group.getChildCount(); 5359 for (int i = 0; i < count; i++) { 5360 getGfxInfo(group.getChildAt(i), info); 5361 } 5362 } 5363 } 5364 5365 /** 5366 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5367 * @return True, request has been queued. False, request has been completed. 5368 */ 5369 boolean die(boolean immediate) { 5370 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5371 // done by dispatchDetachedFromWindow will cause havoc on return. 5372 if (immediate && !mIsInTraversal) { 5373 doDie(); 5374 return false; 5375 } 5376 5377 if (!mIsDrawing) { 5378 destroyHardwareRenderer(); 5379 } else { 5380 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5381 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5382 } 5383 mHandler.sendEmptyMessage(MSG_DIE); 5384 return true; 5385 } 5386 5387 void doDie() { 5388 checkThread(); 5389 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5390 synchronized (this) { 5391 if (mRemoved) { 5392 return; 5393 } 5394 mRemoved = true; 5395 if (mAdded) { 5396 dispatchDetachedFromWindow(); 5397 } 5398 5399 if (mAdded && !mFirst) { 5400 destroyHardwareRenderer(); 5401 5402 if (mView != null) { 5403 int viewVisibility = mView.getVisibility(); 5404 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5405 if (mWindowAttributesChanged || viewVisibilityChanged) { 5406 // If layout params have been changed, first give them 5407 // to the window manager to make sure it has the correct 5408 // animation info. 5409 try { 5410 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5411 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5412 mWindowSession.finishDrawing(mWindow); 5413 } 5414 } catch (RemoteException e) { 5415 } 5416 } 5417 5418 mSurface.release(); 5419 } 5420 } 5421 5422 mAdded = false; 5423 } 5424 WindowManagerGlobal.getInstance().doRemoveView(this); 5425 } 5426 5427 public void requestUpdateConfiguration(Configuration config) { 5428 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5429 mHandler.sendMessage(msg); 5430 } 5431 5432 public void loadSystemProperties() { 5433 mHandler.post(new Runnable() { 5434 @Override 5435 public void run() { 5436 // Profiling 5437 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5438 profileRendering(mAttachInfo.mHasWindowFocus); 5439 5440 // Media (used by sound effects) 5441 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5442 5443 // Hardware rendering 5444 if (mAttachInfo.mHardwareRenderer != null) { 5445 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5446 invalidate(); 5447 } 5448 } 5449 5450 // Layout debugging 5451 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5452 if (layout != mAttachInfo.mDebugLayout) { 5453 mAttachInfo.mDebugLayout = layout; 5454 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5455 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5456 } 5457 } 5458 5459 // detect emulator 5460 mIsEmulator = Build.HARDWARE.contains("goldfish"); 5461 mIsCircularEmulator = 5462 SystemProperties.getBoolean(PROPERTY_EMULATOR_CIRCULAR, false); 5463 } 5464 }); 5465 } 5466 5467 private void destroyHardwareRenderer() { 5468 HardwareRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5469 5470 if (hardwareRenderer != null) { 5471 if (mView != null) { 5472 hardwareRenderer.destroyHardwareResources(mView); 5473 } 5474 hardwareRenderer.destroy(); 5475 hardwareRenderer.setRequested(false); 5476 5477 mAttachInfo.mHardwareRenderer = null; 5478 mAttachInfo.mHardwareAccelerated = false; 5479 } 5480 } 5481 5482 public void dispatchFinishInputConnection(InputConnection connection) { 5483 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5484 mHandler.sendMessage(msg); 5485 } 5486 5487 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5488 Rect visibleInsets, Rect stableInsets, boolean reportDraw, Configuration newConfig) { 5489 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5490 + " contentInsets=" + contentInsets.toShortString() 5491 + " visibleInsets=" + visibleInsets.toShortString() 5492 + " reportDraw=" + reportDraw); 5493 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5494 if (mTranslator != null) { 5495 mTranslator.translateRectInScreenToAppWindow(frame); 5496 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5497 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5498 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5499 } 5500 SomeArgs args = SomeArgs.obtain(); 5501 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5502 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5503 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5504 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5505 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5506 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5507 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5508 msg.obj = args; 5509 mHandler.sendMessage(msg); 5510 } 5511 5512 public void dispatchMoved(int newX, int newY) { 5513 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5514 if (mTranslator != null) { 5515 PointF point = new PointF(newX, newY); 5516 mTranslator.translatePointInScreenToAppWindow(point); 5517 newX = (int) (point.x + 0.5); 5518 newY = (int) (point.y + 0.5); 5519 } 5520 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5521 mHandler.sendMessage(msg); 5522 } 5523 5524 /** 5525 * Represents a pending input event that is waiting in a queue. 5526 * 5527 * Input events are processed in serial order by the timestamp specified by 5528 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5529 * one input event to the application at a time and waits for the application 5530 * to finish handling it before delivering the next one. 5531 * 5532 * However, because the application or IME can synthesize and inject multiple 5533 * key events at a time without going through the input dispatcher, we end up 5534 * needing a queue on the application's side. 5535 */ 5536 private static final class QueuedInputEvent { 5537 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5538 public static final int FLAG_DEFERRED = 1 << 1; 5539 public static final int FLAG_FINISHED = 1 << 2; 5540 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5541 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5542 public static final int FLAG_UNHANDLED = 1 << 5; 5543 5544 public QueuedInputEvent mNext; 5545 5546 public InputEvent mEvent; 5547 public InputEventReceiver mReceiver; 5548 public int mFlags; 5549 5550 public boolean shouldSkipIme() { 5551 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5552 return true; 5553 } 5554 return mEvent instanceof MotionEvent 5555 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5556 } 5557 5558 public boolean shouldSendToSynthesizer() { 5559 if ((mFlags & FLAG_UNHANDLED) != 0) { 5560 return true; 5561 } 5562 5563 return false; 5564 } 5565 5566 @Override 5567 public String toString() { 5568 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5569 boolean hasPrevious = false; 5570 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5571 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5572 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5573 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5574 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5575 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5576 if (!hasPrevious) { 5577 sb.append("0"); 5578 } 5579 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5580 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5581 sb.append(", mEvent=" + mEvent + "}"); 5582 return sb.toString(); 5583 } 5584 5585 private boolean flagToString(String name, int flag, 5586 boolean hasPrevious, StringBuilder sb) { 5587 if ((mFlags & flag) != 0) { 5588 if (hasPrevious) { 5589 sb.append("|"); 5590 } 5591 sb.append(name); 5592 return true; 5593 } 5594 return hasPrevious; 5595 } 5596 } 5597 5598 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5599 InputEventReceiver receiver, int flags) { 5600 QueuedInputEvent q = mQueuedInputEventPool; 5601 if (q != null) { 5602 mQueuedInputEventPoolSize -= 1; 5603 mQueuedInputEventPool = q.mNext; 5604 q.mNext = null; 5605 } else { 5606 q = new QueuedInputEvent(); 5607 } 5608 5609 q.mEvent = event; 5610 q.mReceiver = receiver; 5611 q.mFlags = flags; 5612 return q; 5613 } 5614 5615 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5616 q.mEvent = null; 5617 q.mReceiver = null; 5618 5619 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5620 mQueuedInputEventPoolSize += 1; 5621 q.mNext = mQueuedInputEventPool; 5622 mQueuedInputEventPool = q; 5623 } 5624 } 5625 5626 void enqueueInputEvent(InputEvent event) { 5627 enqueueInputEvent(event, null, 0, false); 5628 } 5629 5630 void enqueueInputEvent(InputEvent event, 5631 InputEventReceiver receiver, int flags, boolean processImmediately) { 5632 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5633 5634 // Always enqueue the input event in order, regardless of its time stamp. 5635 // We do this because the application or the IME may inject key events 5636 // in response to touch events and we want to ensure that the injected keys 5637 // are processed in the order they were received and we cannot trust that 5638 // the time stamp of injected events are monotonic. 5639 QueuedInputEvent last = mPendingInputEventTail; 5640 if (last == null) { 5641 mPendingInputEventHead = q; 5642 mPendingInputEventTail = q; 5643 } else { 5644 last.mNext = q; 5645 mPendingInputEventTail = q; 5646 } 5647 mPendingInputEventCount += 1; 5648 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5649 mPendingInputEventCount); 5650 5651 if (processImmediately) { 5652 doProcessInputEvents(); 5653 } else { 5654 scheduleProcessInputEvents(); 5655 } 5656 } 5657 5658 private void scheduleProcessInputEvents() { 5659 if (!mProcessInputEventsScheduled) { 5660 mProcessInputEventsScheduled = true; 5661 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5662 msg.setAsynchronous(true); 5663 mHandler.sendMessage(msg); 5664 } 5665 } 5666 5667 void doProcessInputEvents() { 5668 // Deliver all pending input events in the queue. 5669 while (mPendingInputEventHead != null) { 5670 QueuedInputEvent q = mPendingInputEventHead; 5671 mPendingInputEventHead = q.mNext; 5672 if (mPendingInputEventHead == null) { 5673 mPendingInputEventTail = null; 5674 } 5675 q.mNext = null; 5676 5677 mPendingInputEventCount -= 1; 5678 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5679 mPendingInputEventCount); 5680 5681 deliverInputEvent(q); 5682 } 5683 5684 // We are done processing all input events that we can process right now 5685 // so we can clear the pending flag immediately. 5686 if (mProcessInputEventsScheduled) { 5687 mProcessInputEventsScheduled = false; 5688 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5689 } 5690 } 5691 5692 private void deliverInputEvent(QueuedInputEvent q) { 5693 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5694 q.mEvent.getSequenceNumber()); 5695 if (mInputEventConsistencyVerifier != null) { 5696 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5697 } 5698 5699 InputStage stage; 5700 if (q.shouldSendToSynthesizer()) { 5701 stage = mSyntheticInputStage; 5702 } else { 5703 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5704 } 5705 5706 if (stage != null) { 5707 stage.deliver(q); 5708 } else { 5709 finishInputEvent(q); 5710 } 5711 } 5712 5713 private void finishInputEvent(QueuedInputEvent q) { 5714 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5715 q.mEvent.getSequenceNumber()); 5716 5717 if (q.mReceiver != null) { 5718 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5719 q.mReceiver.finishInputEvent(q.mEvent, handled); 5720 } else { 5721 q.mEvent.recycleIfNeededAfterDispatch(); 5722 } 5723 5724 recycleQueuedInputEvent(q); 5725 } 5726 5727 static boolean isTerminalInputEvent(InputEvent event) { 5728 if (event instanceof KeyEvent) { 5729 final KeyEvent keyEvent = (KeyEvent)event; 5730 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5731 } else { 5732 final MotionEvent motionEvent = (MotionEvent)event; 5733 final int action = motionEvent.getAction(); 5734 return action == MotionEvent.ACTION_UP 5735 || action == MotionEvent.ACTION_CANCEL 5736 || action == MotionEvent.ACTION_HOVER_EXIT; 5737 } 5738 } 5739 5740 void scheduleConsumeBatchedInput() { 5741 if (!mConsumeBatchedInputScheduled) { 5742 mConsumeBatchedInputScheduled = true; 5743 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5744 mConsumedBatchedInputRunnable, null); 5745 } 5746 } 5747 5748 void unscheduleConsumeBatchedInput() { 5749 if (mConsumeBatchedInputScheduled) { 5750 mConsumeBatchedInputScheduled = false; 5751 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5752 mConsumedBatchedInputRunnable, null); 5753 } 5754 } 5755 5756 void scheduleConsumeBatchedInputImmediately() { 5757 if (!mConsumeBatchedInputImmediatelyScheduled) { 5758 unscheduleConsumeBatchedInput(); 5759 mConsumeBatchedInputImmediatelyScheduled = true; 5760 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 5761 } 5762 } 5763 5764 void doConsumeBatchedInput(long frameTimeNanos) { 5765 if (mConsumeBatchedInputScheduled) { 5766 mConsumeBatchedInputScheduled = false; 5767 if (mInputEventReceiver != null) { 5768 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 5769 && frameTimeNanos != -1) { 5770 // If we consumed a batch here, we want to go ahead and schedule the 5771 // consumption of batched input events on the next frame. Otherwise, we would 5772 // wait until we have more input events pending and might get starved by other 5773 // things occurring in the process. If the frame time is -1, however, then 5774 // we're in a non-batching mode, so there's no need to schedule this. 5775 scheduleConsumeBatchedInput(); 5776 } 5777 } 5778 doProcessInputEvents(); 5779 } 5780 } 5781 5782 final class TraversalRunnable implements Runnable { 5783 @Override 5784 public void run() { 5785 doTraversal(); 5786 } 5787 } 5788 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5789 5790 final class WindowInputEventReceiver extends InputEventReceiver { 5791 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5792 super(inputChannel, looper); 5793 } 5794 5795 @Override 5796 public void onInputEvent(InputEvent event) { 5797 enqueueInputEvent(event, this, 0, true); 5798 } 5799 5800 @Override 5801 public void onBatchedInputEventPending() { 5802 if (mUnbufferedInputDispatch) { 5803 super.onBatchedInputEventPending(); 5804 } else { 5805 scheduleConsumeBatchedInput(); 5806 } 5807 } 5808 5809 @Override 5810 public void dispose() { 5811 unscheduleConsumeBatchedInput(); 5812 super.dispose(); 5813 } 5814 } 5815 WindowInputEventReceiver mInputEventReceiver; 5816 5817 final class ConsumeBatchedInputRunnable implements Runnable { 5818 @Override 5819 public void run() { 5820 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5821 } 5822 } 5823 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5824 new ConsumeBatchedInputRunnable(); 5825 boolean mConsumeBatchedInputScheduled; 5826 5827 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 5828 @Override 5829 public void run() { 5830 doConsumeBatchedInput(-1); 5831 } 5832 } 5833 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 5834 new ConsumeBatchedInputImmediatelyRunnable(); 5835 boolean mConsumeBatchedInputImmediatelyScheduled; 5836 5837 final class InvalidateOnAnimationRunnable implements Runnable { 5838 private boolean mPosted; 5839 private final ArrayList<View> mViews = new ArrayList<View>(); 5840 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5841 new ArrayList<AttachInfo.InvalidateInfo>(); 5842 private View[] mTempViews; 5843 private AttachInfo.InvalidateInfo[] mTempViewRects; 5844 5845 public void addView(View view) { 5846 synchronized (this) { 5847 mViews.add(view); 5848 postIfNeededLocked(); 5849 } 5850 } 5851 5852 public void addViewRect(AttachInfo.InvalidateInfo info) { 5853 synchronized (this) { 5854 mViewRects.add(info); 5855 postIfNeededLocked(); 5856 } 5857 } 5858 5859 public void removeView(View view) { 5860 synchronized (this) { 5861 mViews.remove(view); 5862 5863 for (int i = mViewRects.size(); i-- > 0; ) { 5864 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5865 if (info.target == view) { 5866 mViewRects.remove(i); 5867 info.recycle(); 5868 } 5869 } 5870 5871 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5872 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5873 mPosted = false; 5874 } 5875 } 5876 } 5877 5878 @Override 5879 public void run() { 5880 final int viewCount; 5881 final int viewRectCount; 5882 synchronized (this) { 5883 mPosted = false; 5884 5885 viewCount = mViews.size(); 5886 if (viewCount != 0) { 5887 mTempViews = mViews.toArray(mTempViews != null 5888 ? mTempViews : new View[viewCount]); 5889 mViews.clear(); 5890 } 5891 5892 viewRectCount = mViewRects.size(); 5893 if (viewRectCount != 0) { 5894 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5895 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5896 mViewRects.clear(); 5897 } 5898 } 5899 5900 for (int i = 0; i < viewCount; i++) { 5901 mTempViews[i].invalidate(); 5902 mTempViews[i] = null; 5903 } 5904 5905 for (int i = 0; i < viewRectCount; i++) { 5906 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5907 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5908 info.recycle(); 5909 } 5910 } 5911 5912 private void postIfNeededLocked() { 5913 if (!mPosted) { 5914 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5915 mPosted = true; 5916 } 5917 } 5918 } 5919 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5920 new InvalidateOnAnimationRunnable(); 5921 5922 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5923 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5924 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5925 } 5926 5927 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5928 long delayMilliseconds) { 5929 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5930 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5931 } 5932 5933 public void dispatchInvalidateOnAnimation(View view) { 5934 mInvalidateOnAnimationRunnable.addView(view); 5935 } 5936 5937 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5938 mInvalidateOnAnimationRunnable.addViewRect(info); 5939 } 5940 5941 public void cancelInvalidate(View view) { 5942 mHandler.removeMessages(MSG_INVALIDATE, view); 5943 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5944 // them to the pool 5945 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5946 mInvalidateOnAnimationRunnable.removeView(view); 5947 } 5948 5949 public void dispatchInputEvent(InputEvent event) { 5950 dispatchInputEvent(event, null); 5951 } 5952 5953 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 5954 SomeArgs args = SomeArgs.obtain(); 5955 args.arg1 = event; 5956 args.arg2 = receiver; 5957 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 5958 msg.setAsynchronous(true); 5959 mHandler.sendMessage(msg); 5960 } 5961 5962 public void synthesizeInputEvent(InputEvent event) { 5963 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 5964 msg.setAsynchronous(true); 5965 mHandler.sendMessage(msg); 5966 } 5967 5968 public void dispatchKeyFromIme(KeyEvent event) { 5969 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5970 msg.setAsynchronous(true); 5971 mHandler.sendMessage(msg); 5972 } 5973 5974 /** 5975 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 5976 * 5977 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 5978 * passes in. 5979 */ 5980 public void dispatchUnhandledInputEvent(InputEvent event) { 5981 if (event instanceof MotionEvent) { 5982 event = MotionEvent.obtain((MotionEvent) event); 5983 } 5984 synthesizeInputEvent(event); 5985 } 5986 5987 public void dispatchAppVisibility(boolean visible) { 5988 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5989 msg.arg1 = visible ? 1 : 0; 5990 mHandler.sendMessage(msg); 5991 } 5992 5993 public void dispatchGetNewSurface() { 5994 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5995 mHandler.sendMessage(msg); 5996 } 5997 5998 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5999 Message msg = Message.obtain(); 6000 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6001 msg.arg1 = hasFocus ? 1 : 0; 6002 msg.arg2 = inTouchMode ? 1 : 0; 6003 mHandler.sendMessage(msg); 6004 } 6005 6006 public void dispatchCloseSystemDialogs(String reason) { 6007 Message msg = Message.obtain(); 6008 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6009 msg.obj = reason; 6010 mHandler.sendMessage(msg); 6011 } 6012 6013 public void dispatchDragEvent(DragEvent event) { 6014 final int what; 6015 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6016 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6017 mHandler.removeMessages(what); 6018 } else { 6019 what = MSG_DISPATCH_DRAG_EVENT; 6020 } 6021 Message msg = mHandler.obtainMessage(what, event); 6022 mHandler.sendMessage(msg); 6023 } 6024 6025 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6026 int localValue, int localChanges) { 6027 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6028 args.seq = seq; 6029 args.globalVisibility = globalVisibility; 6030 args.localValue = localValue; 6031 args.localChanges = localChanges; 6032 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6033 } 6034 6035 public void dispatchDoneAnimating() { 6036 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 6037 } 6038 6039 public void dispatchCheckFocus() { 6040 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6041 // This will result in a call to checkFocus() below. 6042 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6043 } 6044 } 6045 6046 /** 6047 * Post a callback to send a 6048 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6049 * This event is send at most once every 6050 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6051 */ 6052 private void postSendWindowContentChangedCallback(View source, int changeType) { 6053 if (mSendWindowContentChangedAccessibilityEvent == null) { 6054 mSendWindowContentChangedAccessibilityEvent = 6055 new SendWindowContentChangedAccessibilityEvent(); 6056 } 6057 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6058 } 6059 6060 /** 6061 * Remove a posted callback to send a 6062 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6063 */ 6064 private void removeSendWindowContentChangedCallback() { 6065 if (mSendWindowContentChangedAccessibilityEvent != null) { 6066 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6067 } 6068 } 6069 6070 @Override 6071 public boolean showContextMenuForChild(View originalView) { 6072 return false; 6073 } 6074 6075 @Override 6076 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6077 return null; 6078 } 6079 6080 @Override 6081 public void createContextMenu(ContextMenu menu) { 6082 } 6083 6084 @Override 6085 public void childDrawableStateChanged(View child) { 6086 } 6087 6088 @Override 6089 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6090 if (mView == null) { 6091 return false; 6092 } 6093 // Intercept accessibility focus events fired by virtual nodes to keep 6094 // track of accessibility focus position in such nodes. 6095 final int eventType = event.getEventType(); 6096 switch (eventType) { 6097 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6098 final long sourceNodeId = event.getSourceNodeId(); 6099 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6100 sourceNodeId); 6101 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6102 if (source != null) { 6103 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6104 if (provider != null) { 6105 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6106 sourceNodeId); 6107 final AccessibilityNodeInfo node; 6108 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6109 node = provider.createAccessibilityNodeInfo( 6110 AccessibilityNodeProvider.HOST_VIEW_ID); 6111 } else { 6112 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6113 } 6114 setAccessibilityFocus(source, node); 6115 } 6116 } 6117 } break; 6118 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6119 final long sourceNodeId = event.getSourceNodeId(); 6120 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6121 sourceNodeId); 6122 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6123 if (source != null) { 6124 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6125 if (provider != null) { 6126 setAccessibilityFocus(null, null); 6127 } 6128 } 6129 } break; 6130 6131 6132 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6133 if (mAccessibilityFocusedHost != null && mAccessibilityFocusedVirtualView != null) { 6134 // We care only for changes rooted in the focused host. 6135 final long eventSourceId = event.getSourceNodeId(); 6136 final int hostViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6137 eventSourceId); 6138 if (hostViewId != mAccessibilityFocusedHost.getAccessibilityViewId()) { 6139 break; 6140 } 6141 6142 // We only care about changes that may change the virtual focused view bounds. 6143 final int changes = event.getContentChangeTypes(); 6144 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) != 0 6145 || changes == AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6146 AccessibilityNodeProvider provider = mAccessibilityFocusedHost 6147 .getAccessibilityNodeProvider(); 6148 if (provider != null) { 6149 final int virtualChildId = AccessibilityNodeInfo.getVirtualDescendantId( 6150 mAccessibilityFocusedVirtualView.getSourceNodeId()); 6151 if (virtualChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6152 mAccessibilityFocusedVirtualView = provider 6153 .createAccessibilityNodeInfo( 6154 AccessibilityNodeProvider.HOST_VIEW_ID); 6155 } else { 6156 mAccessibilityFocusedVirtualView = provider 6157 .createAccessibilityNodeInfo(virtualChildId); 6158 } 6159 } 6160 } 6161 } 6162 } break; 6163 } 6164 mAccessibilityManager.sendAccessibilityEvent(event); 6165 return true; 6166 } 6167 6168 @Override 6169 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6170 postSendWindowContentChangedCallback(source, changeType); 6171 } 6172 6173 @Override 6174 public boolean canResolveLayoutDirection() { 6175 return true; 6176 } 6177 6178 @Override 6179 public boolean isLayoutDirectionResolved() { 6180 return true; 6181 } 6182 6183 @Override 6184 public int getLayoutDirection() { 6185 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6186 } 6187 6188 @Override 6189 public boolean canResolveTextDirection() { 6190 return true; 6191 } 6192 6193 @Override 6194 public boolean isTextDirectionResolved() { 6195 return true; 6196 } 6197 6198 @Override 6199 public int getTextDirection() { 6200 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6201 } 6202 6203 @Override 6204 public boolean canResolveTextAlignment() { 6205 return true; 6206 } 6207 6208 @Override 6209 public boolean isTextAlignmentResolved() { 6210 return true; 6211 } 6212 6213 @Override 6214 public int getTextAlignment() { 6215 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6216 } 6217 6218 private View getCommonPredecessor(View first, View second) { 6219 if (mTempHashSet == null) { 6220 mTempHashSet = new HashSet<View>(); 6221 } 6222 HashSet<View> seen = mTempHashSet; 6223 seen.clear(); 6224 View firstCurrent = first; 6225 while (firstCurrent != null) { 6226 seen.add(firstCurrent); 6227 ViewParent firstCurrentParent = firstCurrent.mParent; 6228 if (firstCurrentParent instanceof View) { 6229 firstCurrent = (View) firstCurrentParent; 6230 } else { 6231 firstCurrent = null; 6232 } 6233 } 6234 View secondCurrent = second; 6235 while (secondCurrent != null) { 6236 if (seen.contains(secondCurrent)) { 6237 seen.clear(); 6238 return secondCurrent; 6239 } 6240 ViewParent secondCurrentParent = secondCurrent.mParent; 6241 if (secondCurrentParent instanceof View) { 6242 secondCurrent = (View) secondCurrentParent; 6243 } else { 6244 secondCurrent = null; 6245 } 6246 } 6247 seen.clear(); 6248 return null; 6249 } 6250 6251 void checkThread() { 6252 if (mThread != Thread.currentThread()) { 6253 throw new CalledFromWrongThreadException( 6254 "Only the original thread that created a view hierarchy can touch its views."); 6255 } 6256 } 6257 6258 @Override 6259 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6260 // ViewAncestor never intercepts touch event, so this can be a no-op 6261 } 6262 6263 @Override 6264 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6265 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6266 if (rectangle != null) { 6267 mTempRect.set(rectangle); 6268 mTempRect.offset(0, -mCurScrollY); 6269 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6270 try { 6271 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6272 } catch (RemoteException re) { 6273 /* ignore */ 6274 } 6275 } 6276 return scrolled; 6277 } 6278 6279 @Override 6280 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6281 // Do nothing. 6282 } 6283 6284 @Override 6285 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6286 return false; 6287 } 6288 6289 @Override 6290 public void onStopNestedScroll(View target) { 6291 } 6292 6293 @Override 6294 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6295 } 6296 6297 @Override 6298 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6299 int dxUnconsumed, int dyUnconsumed) { 6300 } 6301 6302 @Override 6303 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6304 } 6305 6306 @Override 6307 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6308 return false; 6309 } 6310 6311 @Override 6312 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6313 return false; 6314 } 6315 6316 void changeCanvasOpacity(boolean opaque) { 6317 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6318 if (mAttachInfo.mHardwareRenderer != null) { 6319 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6320 } 6321 } 6322 6323 class TakenSurfaceHolder extends BaseSurfaceHolder { 6324 @Override 6325 public boolean onAllowLockCanvas() { 6326 return mDrawingAllowed; 6327 } 6328 6329 @Override 6330 public void onRelayoutContainer() { 6331 // Not currently interesting -- from changing between fixed and layout size. 6332 } 6333 6334 @Override 6335 public void setFormat(int format) { 6336 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6337 } 6338 6339 @Override 6340 public void setType(int type) { 6341 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6342 } 6343 6344 @Override 6345 public void onUpdateSurface() { 6346 // We take care of format and type changes on our own. 6347 throw new IllegalStateException("Shouldn't be here"); 6348 } 6349 6350 @Override 6351 public boolean isCreating() { 6352 return mIsCreating; 6353 } 6354 6355 @Override 6356 public void setFixedSize(int width, int height) { 6357 throw new UnsupportedOperationException( 6358 "Currently only support sizing from layout"); 6359 } 6360 6361 @Override 6362 public void setKeepScreenOn(boolean screenOn) { 6363 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6364 } 6365 } 6366 6367 static class W extends IWindow.Stub { 6368 private final WeakReference<ViewRootImpl> mViewAncestor; 6369 private final IWindowSession mWindowSession; 6370 6371 W(ViewRootImpl viewAncestor) { 6372 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6373 mWindowSession = viewAncestor.mWindowSession; 6374 } 6375 6376 @Override 6377 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6378 Rect visibleInsets, Rect stableInsets, boolean reportDraw, 6379 Configuration newConfig) { 6380 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6381 if (viewAncestor != null) { 6382 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6383 visibleInsets, stableInsets, reportDraw, newConfig); 6384 } 6385 } 6386 6387 @Override 6388 public void moved(int newX, int newY) { 6389 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6390 if (viewAncestor != null) { 6391 viewAncestor.dispatchMoved(newX, newY); 6392 } 6393 } 6394 6395 @Override 6396 public void dispatchAppVisibility(boolean visible) { 6397 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6398 if (viewAncestor != null) { 6399 viewAncestor.dispatchAppVisibility(visible); 6400 } 6401 } 6402 6403 @Override 6404 public void dispatchGetNewSurface() { 6405 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6406 if (viewAncestor != null) { 6407 viewAncestor.dispatchGetNewSurface(); 6408 } 6409 } 6410 6411 @Override 6412 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6413 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6414 if (viewAncestor != null) { 6415 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6416 } 6417 } 6418 6419 private static int checkCallingPermission(String permission) { 6420 try { 6421 return ActivityManagerNative.getDefault().checkPermission( 6422 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6423 } catch (RemoteException e) { 6424 return PackageManager.PERMISSION_DENIED; 6425 } 6426 } 6427 6428 @Override 6429 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6430 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6431 if (viewAncestor != null) { 6432 final View view = viewAncestor.mView; 6433 if (view != null) { 6434 if (checkCallingPermission(Manifest.permission.DUMP) != 6435 PackageManager.PERMISSION_GRANTED) { 6436 throw new SecurityException("Insufficient permissions to invoke" 6437 + " executeCommand() from pid=" + Binder.getCallingPid() 6438 + ", uid=" + Binder.getCallingUid()); 6439 } 6440 6441 OutputStream clientStream = null; 6442 try { 6443 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6444 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6445 } catch (IOException e) { 6446 e.printStackTrace(); 6447 } finally { 6448 if (clientStream != null) { 6449 try { 6450 clientStream.close(); 6451 } catch (IOException e) { 6452 e.printStackTrace(); 6453 } 6454 } 6455 } 6456 } 6457 } 6458 } 6459 6460 @Override 6461 public void closeSystemDialogs(String reason) { 6462 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6463 if (viewAncestor != null) { 6464 viewAncestor.dispatchCloseSystemDialogs(reason); 6465 } 6466 } 6467 6468 @Override 6469 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6470 boolean sync) { 6471 if (sync) { 6472 try { 6473 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6474 } catch (RemoteException e) { 6475 } 6476 } 6477 } 6478 6479 @Override 6480 public void dispatchWallpaperCommand(String action, int x, int y, 6481 int z, Bundle extras, boolean sync) { 6482 if (sync) { 6483 try { 6484 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6485 } catch (RemoteException e) { 6486 } 6487 } 6488 } 6489 6490 /* Drag/drop */ 6491 @Override 6492 public void dispatchDragEvent(DragEvent event) { 6493 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6494 if (viewAncestor != null) { 6495 viewAncestor.dispatchDragEvent(event); 6496 } 6497 } 6498 6499 @Override 6500 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6501 int localValue, int localChanges) { 6502 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6503 if (viewAncestor != null) { 6504 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6505 localValue, localChanges); 6506 } 6507 } 6508 6509 @Override 6510 public void doneAnimating() { 6511 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6512 if (viewAncestor != null) { 6513 viewAncestor.dispatchDoneAnimating(); 6514 } 6515 } 6516 } 6517 6518 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6519 public CalledFromWrongThreadException(String msg) { 6520 super(msg); 6521 } 6522 } 6523 6524 static RunQueue getRunQueue() { 6525 RunQueue rq = sRunQueues.get(); 6526 if (rq != null) { 6527 return rq; 6528 } 6529 rq = new RunQueue(); 6530 sRunQueues.set(rq); 6531 return rq; 6532 } 6533 6534 /** 6535 * The run queue is used to enqueue pending work from Views when no Handler is 6536 * attached. The work is executed during the next call to performTraversals on 6537 * the thread. 6538 * @hide 6539 */ 6540 static final class RunQueue { 6541 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6542 6543 void post(Runnable action) { 6544 postDelayed(action, 0); 6545 } 6546 6547 void postDelayed(Runnable action, long delayMillis) { 6548 HandlerAction handlerAction = new HandlerAction(); 6549 handlerAction.action = action; 6550 handlerAction.delay = delayMillis; 6551 6552 synchronized (mActions) { 6553 mActions.add(handlerAction); 6554 } 6555 } 6556 6557 void removeCallbacks(Runnable action) { 6558 final HandlerAction handlerAction = new HandlerAction(); 6559 handlerAction.action = action; 6560 6561 synchronized (mActions) { 6562 final ArrayList<HandlerAction> actions = mActions; 6563 6564 while (actions.remove(handlerAction)) { 6565 // Keep going 6566 } 6567 } 6568 } 6569 6570 void executeActions(Handler handler) { 6571 synchronized (mActions) { 6572 final ArrayList<HandlerAction> actions = mActions; 6573 final int count = actions.size(); 6574 6575 for (int i = 0; i < count; i++) { 6576 final HandlerAction handlerAction = actions.get(i); 6577 handler.postDelayed(handlerAction.action, handlerAction.delay); 6578 } 6579 6580 actions.clear(); 6581 } 6582 } 6583 6584 private static class HandlerAction { 6585 Runnable action; 6586 long delay; 6587 6588 @Override 6589 public boolean equals(Object o) { 6590 if (this == o) return true; 6591 if (o == null || getClass() != o.getClass()) return false; 6592 6593 HandlerAction that = (HandlerAction) o; 6594 return !(action != null ? !action.equals(that.action) : that.action != null); 6595 6596 } 6597 6598 @Override 6599 public int hashCode() { 6600 int result = action != null ? action.hashCode() : 0; 6601 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6602 return result; 6603 } 6604 } 6605 } 6606 6607 /** 6608 * Class for managing the accessibility interaction connection 6609 * based on the global accessibility state. 6610 */ 6611 final class AccessibilityInteractionConnectionManager 6612 implements AccessibilityStateChangeListener { 6613 @Override 6614 public void onAccessibilityStateChanged(boolean enabled) { 6615 if (enabled) { 6616 ensureConnection(); 6617 if (mAttachInfo.mHasWindowFocus) { 6618 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6619 View focusedView = mView.findFocus(); 6620 if (focusedView != null && focusedView != mView) { 6621 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6622 } 6623 } 6624 } else { 6625 ensureNoConnection(); 6626 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6627 } 6628 } 6629 6630 public void ensureConnection() { 6631 final boolean registered = 6632 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6633 if (!registered) { 6634 mAttachInfo.mAccessibilityWindowId = 6635 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6636 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6637 } 6638 } 6639 6640 public void ensureNoConnection() { 6641 final boolean registered = 6642 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6643 if (registered) { 6644 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6645 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6646 } 6647 } 6648 } 6649 6650 final class HighContrastTextManager implements HighTextContrastChangeListener { 6651 HighContrastTextManager() { 6652 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 6653 } 6654 @Override 6655 public void onHighTextContrastStateChanged(boolean enabled) { 6656 mAttachInfo.mHighContrastText = enabled; 6657 6658 // Destroy Displaylists so they can be recreated with high contrast recordings 6659 destroyHardwareResources(); 6660 6661 // Schedule redraw, which will rerecord + redraw all text 6662 invalidate(); 6663 } 6664 } 6665 6666 /** 6667 * This class is an interface this ViewAncestor provides to the 6668 * AccessibilityManagerService to the latter can interact with 6669 * the view hierarchy in this ViewAncestor. 6670 */ 6671 static final class AccessibilityInteractionConnection 6672 extends IAccessibilityInteractionConnection.Stub { 6673 private final WeakReference<ViewRootImpl> mViewRootImpl; 6674 6675 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6676 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6677 } 6678 6679 @Override 6680 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6681 Region interactiveRegion, int interactionId, 6682 IAccessibilityInteractionConnectionCallback callback, int flags, 6683 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6684 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6685 if (viewRootImpl != null && viewRootImpl.mView != null) { 6686 viewRootImpl.getAccessibilityInteractionController() 6687 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6688 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6689 interrogatingTid, spec); 6690 } else { 6691 // We cannot make the call and notify the caller so it does not wait. 6692 try { 6693 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6694 } catch (RemoteException re) { 6695 /* best effort - ignore */ 6696 } 6697 } 6698 } 6699 6700 @Override 6701 public void performAccessibilityAction(long accessibilityNodeId, int action, 6702 Bundle arguments, int interactionId, 6703 IAccessibilityInteractionConnectionCallback callback, int flags, 6704 int interrogatingPid, long interrogatingTid) { 6705 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6706 if (viewRootImpl != null && viewRootImpl.mView != null) { 6707 viewRootImpl.getAccessibilityInteractionController() 6708 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6709 interactionId, callback, flags, interrogatingPid, interrogatingTid); 6710 } else { 6711 // We cannot make the call and notify the caller so it does not wait. 6712 try { 6713 callback.setPerformAccessibilityActionResult(false, interactionId); 6714 } catch (RemoteException re) { 6715 /* best effort - ignore */ 6716 } 6717 } 6718 } 6719 6720 @Override 6721 public void computeClickPointInScreen(long accessibilityNodeId, Region interactiveRegion, 6722 int interactionId, IAccessibilityInteractionConnectionCallback callback, 6723 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6724 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6725 if (viewRootImpl != null && viewRootImpl.mView != null) { 6726 viewRootImpl.getAccessibilityInteractionController() 6727 .computeClickPointInScreenClientThread(accessibilityNodeId, 6728 interactiveRegion, interactionId, callback, interrogatingPid, 6729 interrogatingTid, spec); 6730 } else { 6731 // We cannot make the call and notify the caller so it does not wait. 6732 try { 6733 callback.setComputeClickPointInScreenActionResult(null, interactionId); 6734 } catch (RemoteException re) { 6735 /* best effort - ignore */ 6736 } 6737 } 6738 } 6739 6740 @Override 6741 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6742 String viewId, Region interactiveRegion, int interactionId, 6743 IAccessibilityInteractionConnectionCallback callback, int flags, 6744 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6745 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6746 if (viewRootImpl != null && viewRootImpl.mView != null) { 6747 viewRootImpl.getAccessibilityInteractionController() 6748 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6749 viewId, interactiveRegion, interactionId, callback, flags, 6750 interrogatingPid, interrogatingTid, spec); 6751 } else { 6752 // We cannot make the call and notify the caller so it does not wait. 6753 try { 6754 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6755 } catch (RemoteException re) { 6756 /* best effort - ignore */ 6757 } 6758 } 6759 } 6760 6761 @Override 6762 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6763 Region interactiveRegion, int interactionId, 6764 IAccessibilityInteractionConnectionCallback callback, int flags, 6765 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6766 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6767 if (viewRootImpl != null && viewRootImpl.mView != null) { 6768 viewRootImpl.getAccessibilityInteractionController() 6769 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6770 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6771 interrogatingTid, spec); 6772 } else { 6773 // We cannot make the call and notify the caller so it does not wait. 6774 try { 6775 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6776 } catch (RemoteException re) { 6777 /* best effort - ignore */ 6778 } 6779 } 6780 } 6781 6782 @Override 6783 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 6784 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6785 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6786 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6787 if (viewRootImpl != null && viewRootImpl.mView != null) { 6788 viewRootImpl.getAccessibilityInteractionController() 6789 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 6790 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6791 spec); 6792 } else { 6793 // We cannot make the call and notify the caller so it does not wait. 6794 try { 6795 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6796 } catch (RemoteException re) { 6797 /* best effort - ignore */ 6798 } 6799 } 6800 } 6801 6802 @Override 6803 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 6804 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6805 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6806 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6807 if (viewRootImpl != null && viewRootImpl.mView != null) { 6808 viewRootImpl.getAccessibilityInteractionController() 6809 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 6810 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6811 spec); 6812 } else { 6813 // We cannot make the call and notify the caller so it does not wait. 6814 try { 6815 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6816 } catch (RemoteException re) { 6817 /* best effort - ignore */ 6818 } 6819 } 6820 } 6821 } 6822 6823 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6824 private int mChangeTypes = 0; 6825 6826 public View mSource; 6827 public long mLastEventTimeMillis; 6828 6829 @Override 6830 public void run() { 6831 // The accessibility may be turned off while we were waiting so check again. 6832 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6833 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6834 AccessibilityEvent event = AccessibilityEvent.obtain(); 6835 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6836 event.setContentChangeTypes(mChangeTypes); 6837 mSource.sendAccessibilityEventUnchecked(event); 6838 } else { 6839 mLastEventTimeMillis = 0; 6840 } 6841 // In any case reset to initial state. 6842 mSource.resetSubtreeAccessibilityStateChanged(); 6843 mSource = null; 6844 mChangeTypes = 0; 6845 } 6846 6847 public void runOrPost(View source, int changeType) { 6848 if (mSource != null) { 6849 // If there is no common predecessor, then mSource points to 6850 // a removed view, hence in this case always prefer the source. 6851 View predecessor = getCommonPredecessor(mSource, source); 6852 mSource = (predecessor != null) ? predecessor : source; 6853 mChangeTypes |= changeType; 6854 return; 6855 } 6856 mSource = source; 6857 mChangeTypes = changeType; 6858 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6859 final long minEventIntevalMillis = 6860 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6861 if (timeSinceLastMillis >= minEventIntevalMillis) { 6862 mSource.removeCallbacks(this); 6863 run(); 6864 } else { 6865 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6866 } 6867 } 6868 } 6869} 6870