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