ViewRootImpl.java revision f6f1a7ec9935c32e6c1155333de94ac9cd544442
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.Context; 25import android.content.pm.PackageManager; 26import android.content.res.CompatibilityInfo; 27import android.content.res.Configuration; 28import android.content.res.Resources; 29import android.graphics.Canvas; 30import android.graphics.Matrix; 31import android.graphics.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.hardware.display.DisplayManager; 40import android.hardware.display.DisplayManager.DisplayListener; 41import android.media.AudioManager; 42import android.os.Binder; 43import android.os.Build; 44import android.os.Bundle; 45import android.os.Debug; 46import android.os.Handler; 47import android.os.Looper; 48import android.os.Message; 49import android.os.ParcelFileDescriptor; 50import android.os.Process; 51import android.os.RemoteException; 52import android.os.SystemClock; 53import android.os.SystemProperties; 54import android.os.Trace; 55import android.util.AndroidRuntimeException; 56import android.util.DisplayMetrics; 57import android.util.Log; 58import android.util.Slog; 59import android.util.TimeUtils; 60import android.util.TypedValue; 61import android.view.Surface.OutOfResourcesException; 62import android.view.View.AttachInfo; 63import android.view.View.MeasureSpec; 64import android.view.accessibility.AccessibilityEvent; 65import android.view.accessibility.AccessibilityManager; 66import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 67import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 68import android.view.accessibility.AccessibilityNodeInfo; 69import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction; 70import android.view.accessibility.AccessibilityNodeProvider; 71import android.view.accessibility.IAccessibilityInteractionConnection; 72import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 73import android.view.animation.AccelerateDecelerateInterpolator; 74import android.view.animation.Interpolator; 75import android.view.inputmethod.InputConnection; 76import android.view.inputmethod.InputMethodManager; 77import android.widget.Scroller; 78 79import com.android.internal.R; 80import com.android.internal.os.SomeArgs; 81import com.android.internal.policy.PhoneFallbackEventHandler; 82import com.android.internal.view.BaseSurfaceHolder; 83import com.android.internal.view.RootViewSurfaceTaker; 84 85import java.io.FileDescriptor; 86import java.io.IOException; 87import java.io.OutputStream; 88import java.io.PrintWriter; 89import java.lang.ref.WeakReference; 90import java.util.ArrayList; 91import java.util.HashSet; 92 93/** 94 * The top of a view hierarchy, implementing the needed protocol between View 95 * and the WindowManager. This is for the most part an internal implementation 96 * detail of {@link WindowManagerGlobal}. 97 * 98 * {@hide} 99 */ 100@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 101public final class ViewRootImpl implements ViewParent, 102 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 103 private static final String TAG = "ViewRootImpl"; 104 private static final boolean DBG = false; 105 private static final boolean LOCAL_LOGV = false; 106 /** @noinspection PointlessBooleanExpression*/ 107 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 108 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 109 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 110 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 111 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 112 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 113 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 114 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 115 private static final boolean DEBUG_FPS = false; 116 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 117 118 /** 119 * Set this system property to true to force the view hierarchy to render 120 * at 60 Hz. This can be used to measure the potential framerate. 121 */ 122 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 123 124 // properties used by emulator to determine display shape 125 public static final String PROPERTY_EMULATOR_WIN_OUTSET_BOTTOM_PX = 126 "ro.emu.win_outset_bottom_px"; 127 128 /** 129 * Maximum time we allow the user to roll the trackball enough to generate 130 * a key event, before resetting the counters. 131 */ 132 static final int MAX_TRACKBALL_DELAY = 250; 133 134 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 135 136 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 137 static boolean sFirstDrawComplete = false; 138 139 static final ArrayList<ComponentCallbacks> sConfigCallbacks 140 = new ArrayList<ComponentCallbacks>(); 141 142 final Context mContext; 143 final IWindowSession mWindowSession; 144 final Display mDisplay; 145 final DisplayManager mDisplayManager; 146 final String mBasePackageName; 147 148 final int[] mTmpLocation = new int[2]; 149 150 final TypedValue mTmpValue = new TypedValue(); 151 152 final Thread mThread; 153 154 final WindowLeaked mLocation; 155 156 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 157 158 final W mWindow; 159 160 final int mTargetSdkVersion; 161 162 int mSeq; 163 164 View mView; 165 166 View mAccessibilityFocusedHost; 167 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 168 169 int mViewVisibility; 170 boolean mAppVisible = true; 171 int mOrigWindowType = -1; 172 173 // Set to true if the owner of this window is in the stopped state, 174 // so the window should no longer be active. 175 boolean mStopped = false; 176 177 // Set to true to stop input during an Activity Transition. 178 boolean mPausedForTransition = false; 179 180 boolean mLastInCompatMode = false; 181 182 SurfaceHolder.Callback2 mSurfaceHolderCallback; 183 BaseSurfaceHolder mSurfaceHolder; 184 boolean mIsCreating; 185 boolean mDrawingAllowed; 186 187 final Region mTransparentRegion; 188 final Region mPreviousTransparentRegion; 189 190 int mWidth; 191 int mHeight; 192 Rect mDirty; 193 boolean mIsAnimating; 194 195 CompatibilityInfo.Translator mTranslator; 196 197 final View.AttachInfo mAttachInfo; 198 InputChannel mInputChannel; 199 InputQueue.Callback mInputQueueCallback; 200 InputQueue mInputQueue; 201 FallbackEventHandler mFallbackEventHandler; 202 Choreographer mChoreographer; 203 204 final Rect mTempRect; // used in the transaction to not thrash the heap. 205 final Rect mVisRect; // used to retrieve visible rect of focused view. 206 207 boolean mTraversalScheduled; 208 int mTraversalBarrier; 209 boolean mWillDrawSoon; 210 /** Set to true while in performTraversals for detecting when die(true) is called from internal 211 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 212 boolean mIsInTraversal; 213 boolean mApplyInsetsRequested; 214 boolean mLayoutRequested; 215 boolean mFirst; 216 boolean mReportNextDraw; 217 boolean mFullRedrawNeeded; 218 boolean mNewSurfaceNeeded; 219 boolean mHasHadWindowFocus; 220 boolean mLastWasImTarget; 221 boolean mWindowsAnimating; 222 boolean mDrawDuringWindowsAnimating; 223 224 /** How many frames the app is still allowed to draw when a window animation is happening. */ 225 private int mRemainingFrameCount; 226 boolean mIsDrawing; 227 int mLastSystemUiVisibility; 228 int mClientWindowLayoutFlags; 229 boolean mLastOverscanRequested; 230 231 // Pool of queued input events. 232 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 233 private QueuedInputEvent mQueuedInputEventPool; 234 private int mQueuedInputEventPoolSize; 235 236 /* Input event queue. 237 * Pending input events are input events waiting to be delivered to the input stages 238 * and handled by the application. 239 */ 240 QueuedInputEvent mPendingInputEventHead; 241 QueuedInputEvent mPendingInputEventTail; 242 int mPendingInputEventCount; 243 boolean mProcessInputEventsScheduled; 244 boolean mUnbufferedInputDispatch; 245 String mPendingInputEventQueueLengthCounterName = "pq"; 246 247 InputStage mFirstInputStage; 248 InputStage mFirstPostImeInputStage; 249 InputStage mSyntheticInputStage; 250 251 boolean mWindowAttributesChanged = false; 252 int mWindowAttributesChangesFlag = 0; 253 254 // These can be accessed by any thread, must be protected with a lock. 255 // Surface can never be reassigned or cleared (use Surface.clear()). 256 final Surface mSurface = new Surface(); 257 258 boolean mAdded; 259 boolean mAddedTouchMode; 260 261 final DisplayAdjustments mDisplayAdjustments; 262 263 // These are accessed by multiple threads. 264 final Rect mWinFrame; // frame given by window manager. 265 266 final Rect mPendingOverscanInsets = new Rect(); 267 final Rect mPendingVisibleInsets = new Rect(); 268 final Rect mPendingStableInsets = new Rect(); 269 final Rect mPendingContentInsets = new Rect(); 270 final Rect mPendingOutsets = new Rect(); 271 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 272 = new ViewTreeObserver.InternalInsetsInfo(); 273 274 final Rect mDispatchContentInsets = new Rect(); 275 final Rect mDispatchStableInsets = new Rect(); 276 277 private WindowInsets mLastWindowInsets; 278 279 final Configuration mLastConfiguration = new Configuration(); 280 final Configuration mPendingConfiguration = new Configuration(); 281 282 boolean mScrollMayChange; 283 int mSoftInputMode; 284 WeakReference<View> mLastScrolledFocus; 285 int mScrollY; 286 int mCurScrollY; 287 Scroller mScroller; 288 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 289 private ArrayList<LayoutTransition> mPendingTransitions; 290 291 final ViewConfiguration mViewConfiguration; 292 293 /* Drag/drop */ 294 ClipDescription mDragDescription; 295 View mCurrentDragView; 296 volatile Object mLocalDragState; 297 final PointF mDragPoint = new PointF(); 298 final PointF mLastTouchPoint = new PointF(); 299 300 private boolean mProfileRendering; 301 private Choreographer.FrameCallback mRenderProfiler; 302 private boolean mRenderProfilingEnabled; 303 304 // Variables to track frames per second, enabled via DEBUG_FPS flag 305 private long mFpsStartTime = -1; 306 private long mFpsPrevTime = -1; 307 private int mFpsNumFrames; 308 309 /** 310 * see {@link #playSoundEffect(int)} 311 */ 312 AudioManager mAudioManager; 313 314 final AccessibilityManager mAccessibilityManager; 315 316 AccessibilityInteractionController mAccessibilityInteractionController; 317 318 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 319 HighContrastTextManager mHighContrastTextManager; 320 321 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 322 323 HashSet<View> mTempHashSet; 324 325 private final int mDensity; 326 private final int mNoncompatDensity; 327 328 private boolean mInLayout = false; 329 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 330 boolean mHandlingLayoutInLayoutRequest = false; 331 332 private int mViewLayoutDirectionInitial; 333 334 /** Set to true once doDie() has been called. */ 335 private boolean mRemoved; 336 337 /** 338 * Consistency verifier for debugging purposes. 339 */ 340 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 341 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 342 new InputEventConsistencyVerifier(this, 0) : null; 343 344 static final class SystemUiVisibilityInfo { 345 int seq; 346 int globalVisibility; 347 int localValue; 348 int localChanges; 349 } 350 351 public ViewRootImpl(Context context, Display display) { 352 mContext = context; 353 mWindowSession = WindowManagerGlobal.getWindowSession(); 354 mDisplay = display; 355 mBasePackageName = context.getBasePackageName(); 356 357 mDisplayAdjustments = display.getDisplayAdjustments(); 358 359 mThread = Thread.currentThread(); 360 mLocation = new WindowLeaked(null); 361 mLocation.fillInStackTrace(); 362 mWidth = -1; 363 mHeight = -1; 364 mDirty = new Rect(); 365 mTempRect = new Rect(); 366 mVisRect = new Rect(); 367 mWinFrame = new Rect(); 368 mWindow = new W(this); 369 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 370 mViewVisibility = View.GONE; 371 mTransparentRegion = new Region(); 372 mPreviousTransparentRegion = new Region(); 373 mFirst = true; // true for the first time the view is added 374 mAdded = false; 375 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 376 mAccessibilityManager = AccessibilityManager.getInstance(context); 377 mAccessibilityInteractionConnectionManager = 378 new AccessibilityInteractionConnectionManager(); 379 mAccessibilityManager.addAccessibilityStateChangeListener( 380 mAccessibilityInteractionConnectionManager); 381 mHighContrastTextManager = new HighContrastTextManager(); 382 mAccessibilityManager.addHighTextContrastStateChangeListener( 383 mHighContrastTextManager); 384 mViewConfiguration = ViewConfiguration.get(context); 385 mDensity = context.getResources().getDisplayMetrics().densityDpi; 386 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 387 mFallbackEventHandler = new PhoneFallbackEventHandler(context); 388 mChoreographer = Choreographer.getInstance(); 389 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 390 loadSystemProperties(); 391 } 392 393 public static void addFirstDrawHandler(Runnable callback) { 394 synchronized (sFirstDrawHandlers) { 395 if (!sFirstDrawComplete) { 396 sFirstDrawHandlers.add(callback); 397 } 398 } 399 } 400 401 public static void addConfigCallback(ComponentCallbacks callback) { 402 synchronized (sConfigCallbacks) { 403 sConfigCallbacks.add(callback); 404 } 405 } 406 407 // FIXME for perf testing only 408 private boolean mProfile = false; 409 410 /** 411 * Call this to profile the next traversal call. 412 * FIXME for perf testing only. Remove eventually 413 */ 414 public void profile() { 415 mProfile = true; 416 } 417 418 /** 419 * Indicates whether we are in touch mode. Calling this method triggers an IPC 420 * call and should be avoided whenever possible. 421 * 422 * @return True, if the device is in touch mode, false otherwise. 423 * 424 * @hide 425 */ 426 static boolean isInTouchMode() { 427 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 428 if (windowSession != null) { 429 try { 430 return windowSession.getInTouchMode(); 431 } catch (RemoteException e) { 432 } 433 } 434 return false; 435 } 436 437 /** 438 * We have one child 439 */ 440 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 441 synchronized (this) { 442 if (mView == null) { 443 mView = view; 444 445 mAttachInfo.mDisplayState = mDisplay.getState(); 446 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 447 448 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 449 mFallbackEventHandler.setView(view); 450 mWindowAttributes.copyFrom(attrs); 451 if (mWindowAttributes.packageName == null) { 452 mWindowAttributes.packageName = mBasePackageName; 453 } 454 attrs = mWindowAttributes; 455 // Keep track of the actual window flags supplied by the client. 456 mClientWindowLayoutFlags = attrs.flags; 457 458 setAccessibilityFocus(null, null); 459 460 if (view instanceof RootViewSurfaceTaker) { 461 mSurfaceHolderCallback = 462 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 463 if (mSurfaceHolderCallback != null) { 464 mSurfaceHolder = new TakenSurfaceHolder(); 465 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 466 } 467 } 468 469 // Compute surface insets required to draw at specified Z value. 470 // TODO: Use real shadow insets for a constant max Z. 471 if (!attrs.hasManualSurfaceInsets) { 472 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 473 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 474 } 475 476 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 477 mTranslator = compatibilityInfo.getTranslator(); 478 479 // If the application owns the surface, don't enable hardware acceleration 480 if (mSurfaceHolder == null) { 481 enableHardwareAcceleration(attrs); 482 } 483 484 boolean restore = false; 485 if (mTranslator != null) { 486 mSurface.setCompatibilityTranslator(mTranslator); 487 restore = true; 488 attrs.backup(); 489 mTranslator.translateWindowLayout(attrs); 490 } 491 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 492 493 if (!compatibilityInfo.supportsScreen()) { 494 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 495 mLastInCompatMode = true; 496 } 497 498 mSoftInputMode = attrs.softInputMode; 499 mWindowAttributesChanged = true; 500 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 501 mAttachInfo.mRootView = view; 502 mAttachInfo.mScalingRequired = mTranslator != null; 503 mAttachInfo.mApplicationScale = 504 mTranslator == null ? 1.0f : mTranslator.applicationScale; 505 if (panelParentView != null) { 506 mAttachInfo.mPanelParentWindowToken 507 = panelParentView.getApplicationWindowToken(); 508 } 509 mAdded = true; 510 int res; /* = WindowManagerImpl.ADD_OKAY; */ 511 512 // Schedule the first layout -before- adding to the window 513 // manager, to make sure we do the relayout before receiving 514 // any other events from the system. 515 requestLayout(); 516 if ((mWindowAttributes.inputFeatures 517 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 518 mInputChannel = new InputChannel(); 519 } 520 try { 521 mOrigWindowType = mWindowAttributes.type; 522 mAttachInfo.mRecomputeGlobalAttributes = true; 523 collectViewAttributes(); 524 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 525 getHostVisibility(), mDisplay.getDisplayId(), 526 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, 527 mAttachInfo.mOutsets, mInputChannel); 528 } catch (RemoteException e) { 529 mAdded = false; 530 mView = null; 531 mAttachInfo.mRootView = null; 532 mInputChannel = null; 533 mFallbackEventHandler.setView(null); 534 unscheduleTraversals(); 535 setAccessibilityFocus(null, null); 536 throw new RuntimeException("Adding window failed", e); 537 } finally { 538 if (restore) { 539 attrs.restore(); 540 } 541 } 542 543 if (mTranslator != null) { 544 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 545 } 546 mPendingOverscanInsets.set(0, 0, 0, 0); 547 mPendingContentInsets.set(mAttachInfo.mContentInsets); 548 mPendingStableInsets.set(mAttachInfo.mStableInsets); 549 mPendingVisibleInsets.set(0, 0, 0, 0); 550 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 551 if (res < WindowManagerGlobal.ADD_OKAY) { 552 mAttachInfo.mRootView = null; 553 mAdded = false; 554 mFallbackEventHandler.setView(null); 555 unscheduleTraversals(); 556 setAccessibilityFocus(null, null); 557 switch (res) { 558 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 559 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 560 throw new WindowManager.BadTokenException( 561 "Unable to add window -- token " + attrs.token 562 + " is not valid; is your activity running?"); 563 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 564 throw new WindowManager.BadTokenException( 565 "Unable to add window -- token " + attrs.token 566 + " is not for an application"); 567 case WindowManagerGlobal.ADD_APP_EXITING: 568 throw new WindowManager.BadTokenException( 569 "Unable to add window -- app for token " + attrs.token 570 + " is exiting"); 571 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 572 throw new WindowManager.BadTokenException( 573 "Unable to add window -- window " + mWindow 574 + " has already been added"); 575 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 576 // Silently ignore -- we would have just removed it 577 // right away, anyway. 578 return; 579 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 580 throw new WindowManager.BadTokenException( 581 "Unable to add window " + mWindow + 582 " -- another window of this type already exists"); 583 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 584 throw new WindowManager.BadTokenException( 585 "Unable to add window " + mWindow + 586 " -- permission denied for this window type"); 587 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 588 throw new WindowManager.InvalidDisplayException( 589 "Unable to add window " + mWindow + 590 " -- the specified display can not be found"); 591 case WindowManagerGlobal.ADD_INVALID_TYPE: 592 throw new WindowManager.InvalidDisplayException( 593 "Unable to add window " + mWindow 594 + " -- the specified window type is not valid"); 595 } 596 throw new RuntimeException( 597 "Unable to add window -- unknown error code " + res); 598 } 599 600 if (view instanceof RootViewSurfaceTaker) { 601 mInputQueueCallback = 602 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 603 } 604 if (mInputChannel != null) { 605 if (mInputQueueCallback != null) { 606 mInputQueue = new InputQueue(); 607 mInputQueueCallback.onInputQueueCreated(mInputQueue); 608 } 609 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 610 Looper.myLooper()); 611 } 612 613 view.assignParent(this); 614 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 615 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 616 617 if (mAccessibilityManager.isEnabled()) { 618 mAccessibilityInteractionConnectionManager.ensureConnection(); 619 } 620 621 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 622 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 623 } 624 625 // Set up the input pipeline. 626 CharSequence counterSuffix = attrs.getTitle(); 627 mSyntheticInputStage = new SyntheticInputStage(); 628 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 629 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 630 "aq:native-post-ime:" + counterSuffix); 631 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 632 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 633 "aq:ime:" + counterSuffix); 634 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 635 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 636 "aq:native-pre-ime:" + counterSuffix); 637 638 mFirstInputStage = nativePreImeStage; 639 mFirstPostImeInputStage = earlyPostImeStage; 640 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 641 } 642 } 643 } 644 645 /** Whether the window is in local focus mode or not */ 646 private boolean isInLocalFocusMode() { 647 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 648 } 649 650 public int getWindowFlags() { 651 return mWindowAttributes.flags; 652 } 653 654 public int getDisplayId() { 655 return mDisplay.getDisplayId(); 656 } 657 658 public CharSequence getTitle() { 659 return mWindowAttributes.getTitle(); 660 } 661 662 void destroyHardwareResources() { 663 if (mAttachInfo.mHardwareRenderer != null) { 664 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 665 mAttachInfo.mHardwareRenderer.destroy(); 666 } 667 } 668 669 public void detachFunctor(long functor) { 670 if (mAttachInfo.mHardwareRenderer != null) { 671 // Fence so that any pending invokeFunctor() messages will be processed 672 // before we return from detachFunctor. 673 mAttachInfo.mHardwareRenderer.stopDrawing(); 674 } 675 } 676 677 /** 678 * Schedules the functor for execution in either kModeProcess or 679 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 680 * 681 * @param functor The native functor to invoke 682 * @param waitForCompletion If true, this will not return until the functor 683 * has invoked. If false, the functor may be invoked 684 * asynchronously. 685 */ 686 public void invokeFunctor(long functor, boolean waitForCompletion) { 687 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 688 } 689 690 public void registerAnimatingRenderNode(RenderNode animator) { 691 if (mAttachInfo.mHardwareRenderer != null) { 692 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 693 } else { 694 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 695 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 696 } 697 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 698 } 699 } 700 701 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 702 mAttachInfo.mHardwareAccelerated = false; 703 mAttachInfo.mHardwareAccelerationRequested = false; 704 705 // Don't enable hardware acceleration when the application is in compatibility mode 706 if (mTranslator != null) return; 707 708 // Try to enable hardware acceleration if requested 709 final boolean hardwareAccelerated = 710 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 711 712 if (hardwareAccelerated) { 713 if (!HardwareRenderer.isAvailable()) { 714 return; 715 } 716 717 // Persistent processes (including the system) should not do 718 // accelerated rendering on low-end devices. In that case, 719 // sRendererDisabled will be set. In addition, the system process 720 // itself should never do accelerated rendering. In that case, both 721 // sRendererDisabled and sSystemRendererDisabled are set. When 722 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 723 // can be used by code on the system process to escape that and enable 724 // HW accelerated drawing. (This is basically for the lock screen.) 725 726 final boolean fakeHwAccelerated = (attrs.privateFlags & 727 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 728 final boolean forceHwAccelerated = (attrs.privateFlags & 729 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 730 731 if (fakeHwAccelerated) { 732 // This is exclusively for the preview windows the window manager 733 // shows for launching applications, so they will look more like 734 // the app being launched. 735 mAttachInfo.mHardwareAccelerationRequested = true; 736 } else if (!HardwareRenderer.sRendererDisabled 737 || (HardwareRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 738 if (mAttachInfo.mHardwareRenderer != null) { 739 mAttachInfo.mHardwareRenderer.destroy(); 740 } 741 742 final Rect insets = attrs.surfaceInsets; 743 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 744 || insets.top != 0 || insets.bottom != 0; 745 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 746 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(mContext, translucent); 747 if (mAttachInfo.mHardwareRenderer != null) { 748 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 749 mAttachInfo.mHardwareAccelerated = 750 mAttachInfo.mHardwareAccelerationRequested = true; 751 } 752 } 753 } 754 } 755 756 public View getView() { 757 return mView; 758 } 759 760 final WindowLeaked getLocation() { 761 return mLocation; 762 } 763 764 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 765 synchronized (this) { 766 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 767 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 768 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 769 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 770 final int oldSoftInputMode = mWindowAttributes.softInputMode; 771 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 772 773 // Keep track of the actual window flags supplied by the client. 774 mClientWindowLayoutFlags = attrs.flags; 775 776 // Preserve compatible window flag if exists. 777 final int compatibleWindowFlag = mWindowAttributes.privateFlags 778 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 779 780 // Transfer over system UI visibility values as they carry current state. 781 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 782 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 783 784 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 785 if ((mWindowAttributesChangesFlag 786 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 787 // Recompute system ui visibility. 788 mAttachInfo.mRecomputeGlobalAttributes = true; 789 } 790 if (mWindowAttributes.packageName == null) { 791 mWindowAttributes.packageName = mBasePackageName; 792 } 793 mWindowAttributes.privateFlags |= compatibleWindowFlag; 794 795 // Restore old surface insets. 796 mWindowAttributes.surfaceInsets.set( 797 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 798 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 799 800 applyKeepScreenOnFlag(mWindowAttributes); 801 802 if (newView) { 803 mSoftInputMode = attrs.softInputMode; 804 requestLayout(); 805 } 806 807 // Don't lose the mode we last auto-computed. 808 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 809 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 810 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 811 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 812 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 813 } 814 815 mWindowAttributesChanged = true; 816 scheduleTraversals(); 817 } 818 } 819 820 void handleAppVisibility(boolean visible) { 821 if (mAppVisible != visible) { 822 mAppVisible = visible; 823 scheduleTraversals(); 824 if (!mAppVisible) { 825 WindowManagerGlobal.trimForeground(); 826 } 827 } 828 } 829 830 void handleGetNewSurface() { 831 mNewSurfaceNeeded = true; 832 mFullRedrawNeeded = true; 833 scheduleTraversals(); 834 } 835 836 private final DisplayListener mDisplayListener = new DisplayListener() { 837 @Override 838 public void onDisplayChanged(int displayId) { 839 if (mView != null && mDisplay.getDisplayId() == displayId) { 840 final int oldDisplayState = mAttachInfo.mDisplayState; 841 final int newDisplayState = mDisplay.getState(); 842 if (oldDisplayState != newDisplayState) { 843 mAttachInfo.mDisplayState = newDisplayState; 844 pokeDrawLockIfNeeded(); 845 if (oldDisplayState != Display.STATE_UNKNOWN) { 846 final int oldScreenState = toViewScreenState(oldDisplayState); 847 final int newScreenState = toViewScreenState(newDisplayState); 848 if (oldScreenState != newScreenState) { 849 mView.dispatchScreenStateChanged(newScreenState); 850 } 851 if (oldDisplayState == Display.STATE_OFF) { 852 // Draw was suppressed so we need to for it to happen here. 853 mFullRedrawNeeded = true; 854 scheduleTraversals(); 855 } 856 } 857 } 858 } 859 } 860 861 @Override 862 public void onDisplayRemoved(int displayId) { 863 } 864 865 @Override 866 public void onDisplayAdded(int displayId) { 867 } 868 869 private int toViewScreenState(int displayState) { 870 return displayState == Display.STATE_OFF ? 871 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 872 } 873 }; 874 875 void pokeDrawLockIfNeeded() { 876 final int displayState = mAttachInfo.mDisplayState; 877 if (mView != null && mAdded && mTraversalScheduled 878 && (displayState == Display.STATE_DOZE 879 || displayState == Display.STATE_DOZE_SUSPEND)) { 880 try { 881 mWindowSession.pokeDrawLock(mWindow); 882 } catch (RemoteException ex) { 883 // System server died, oh well. 884 } 885 } 886 } 887 888 @Override 889 public void requestFitSystemWindows() { 890 checkThread(); 891 mApplyInsetsRequested = true; 892 scheduleTraversals(); 893 } 894 895 @Override 896 public void requestLayout() { 897 if (!mHandlingLayoutInLayoutRequest) { 898 checkThread(); 899 mLayoutRequested = true; 900 scheduleTraversals(); 901 } 902 } 903 904 @Override 905 public boolean isLayoutRequested() { 906 return mLayoutRequested; 907 } 908 909 void invalidate() { 910 mDirty.set(0, 0, mWidth, mHeight); 911 if (!mWillDrawSoon) { 912 scheduleTraversals(); 913 } 914 } 915 916 void invalidateWorld(View view) { 917 view.invalidate(); 918 if (view instanceof ViewGroup) { 919 ViewGroup parent = (ViewGroup) view; 920 for (int i = 0; i < parent.getChildCount(); i++) { 921 invalidateWorld(parent.getChildAt(i)); 922 } 923 } 924 } 925 926 @Override 927 public void invalidateChild(View child, Rect dirty) { 928 invalidateChildInParent(null, dirty); 929 } 930 931 @Override 932 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 933 checkThread(); 934 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 935 936 if (dirty == null) { 937 invalidate(); 938 return null; 939 } else if (dirty.isEmpty() && !mIsAnimating) { 940 return null; 941 } 942 943 if (mCurScrollY != 0 || mTranslator != null) { 944 mTempRect.set(dirty); 945 dirty = mTempRect; 946 if (mCurScrollY != 0) { 947 dirty.offset(0, -mCurScrollY); 948 } 949 if (mTranslator != null) { 950 mTranslator.translateRectInAppWindowToScreen(dirty); 951 } 952 if (mAttachInfo.mScalingRequired) { 953 dirty.inset(-1, -1); 954 } 955 } 956 957 invalidateRectOnScreen(dirty); 958 959 return null; 960 } 961 962 private void invalidateRectOnScreen(Rect dirty) { 963 final Rect localDirty = mDirty; 964 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 965 mAttachInfo.mSetIgnoreDirtyState = true; 966 mAttachInfo.mIgnoreDirtyState = true; 967 } 968 969 // Add the new dirty rect to the current one 970 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 971 // Intersect with the bounds of the window to skip 972 // updates that lie outside of the visible region 973 final float appScale = mAttachInfo.mApplicationScale; 974 final boolean intersected = localDirty.intersect(0, 0, 975 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 976 if (!intersected) { 977 localDirty.setEmpty(); 978 } 979 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 980 scheduleTraversals(); 981 } 982 } 983 984 void setWindowStopped(boolean stopped) { 985 if (mStopped != stopped) { 986 mStopped = stopped; 987 if (!mStopped) { 988 scheduleTraversals(); 989 } 990 } 991 } 992 993 /** 994 * Block the input events during an Activity Transition. The KEYCODE_BACK event is allowed 995 * through to allow quick reversal of the Activity Transition. 996 * 997 * @param paused true to pause, false to resume. 998 */ 999 public void setPausedForTransition(boolean paused) { 1000 mPausedForTransition = paused; 1001 } 1002 1003 @Override 1004 public ViewParent getParent() { 1005 return null; 1006 } 1007 1008 @Override 1009 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 1010 if (child != mView) { 1011 throw new RuntimeException("child is not mine, honest!"); 1012 } 1013 // Note: don't apply scroll offset, because we want to know its 1014 // visibility in the virtual canvas being given to the view hierarchy. 1015 return r.intersect(0, 0, mWidth, mHeight); 1016 } 1017 1018 @Override 1019 public void bringChildToFront(View child) { 1020 } 1021 1022 int getHostVisibility() { 1023 return mAppVisible ? mView.getVisibility() : View.GONE; 1024 } 1025 1026 /** 1027 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1028 * This list will be cleared after the transitions on the list are start()'ed. These 1029 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1030 * happens during the layout phase of traversal, which we want to complete before any of the 1031 * animations are started (because those animations may side-effect properties that layout 1032 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1033 * to the list and it is started just prior to starting the drawing phase of traversal. 1034 * 1035 * @param transition The LayoutTransition to be started on the next traversal. 1036 * 1037 * @hide 1038 */ 1039 public void requestTransitionStart(LayoutTransition transition) { 1040 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1041 if (mPendingTransitions == null) { 1042 mPendingTransitions = new ArrayList<LayoutTransition>(); 1043 } 1044 mPendingTransitions.add(transition); 1045 } 1046 } 1047 1048 /** 1049 * Notifies the HardwareRenderer that a new frame will be coming soon. 1050 * Currently only {@link ThreadedRenderer} cares about this, and uses 1051 * this knowledge to adjust the scheduling of off-thread animations 1052 */ 1053 void notifyRendererOfFramePending() { 1054 if (mAttachInfo.mHardwareRenderer != null) { 1055 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1056 } 1057 } 1058 1059 void scheduleTraversals() { 1060 if (!mTraversalScheduled) { 1061 mTraversalScheduled = true; 1062 mTraversalBarrier = mHandler.getLooper().getQueue().postSyncBarrier(); 1063 mChoreographer.postCallback( 1064 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1065 if (!mUnbufferedInputDispatch) { 1066 scheduleConsumeBatchedInput(); 1067 } 1068 notifyRendererOfFramePending(); 1069 pokeDrawLockIfNeeded(); 1070 } 1071 } 1072 1073 void unscheduleTraversals() { 1074 if (mTraversalScheduled) { 1075 mTraversalScheduled = false; 1076 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1077 mChoreographer.removeCallbacks( 1078 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1079 } 1080 } 1081 1082 void doTraversal() { 1083 if (mTraversalScheduled) { 1084 mTraversalScheduled = false; 1085 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1086 1087 if (mProfile) { 1088 Debug.startMethodTracing("ViewAncestor"); 1089 } 1090 1091 performTraversals(); 1092 1093 if (mProfile) { 1094 Debug.stopMethodTracing(); 1095 mProfile = false; 1096 } 1097 } 1098 } 1099 1100 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1101 // Update window's global keep screen on flag: if a view has requested 1102 // that the screen be kept on, then it is always set; otherwise, it is 1103 // set to whatever the client last requested for the global state. 1104 if (mAttachInfo.mKeepScreenOn) { 1105 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1106 } else { 1107 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1108 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1109 } 1110 } 1111 1112 private boolean collectViewAttributes() { 1113 if (mAttachInfo.mRecomputeGlobalAttributes) { 1114 //Log.i(TAG, "Computing view hierarchy attributes!"); 1115 mAttachInfo.mRecomputeGlobalAttributes = false; 1116 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1117 mAttachInfo.mKeepScreenOn = false; 1118 mAttachInfo.mSystemUiVisibility = 0; 1119 mAttachInfo.mHasSystemUiListeners = false; 1120 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1121 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1122 WindowManager.LayoutParams params = mWindowAttributes; 1123 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1124 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1125 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1126 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1127 applyKeepScreenOnFlag(params); 1128 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1129 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1130 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1131 return true; 1132 } 1133 } 1134 return false; 1135 } 1136 1137 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1138 int vis = 0; 1139 // Translucent decor window flags imply stable system ui visibility. 1140 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1141 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1142 } 1143 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1144 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1145 } 1146 return vis; 1147 } 1148 1149 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1150 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1151 int childWidthMeasureSpec; 1152 int childHeightMeasureSpec; 1153 boolean windowSizeMayChange = false; 1154 1155 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1156 "Measuring " + host + " in display " + desiredWindowWidth 1157 + "x" + desiredWindowHeight + "..."); 1158 1159 boolean goodMeasure = false; 1160 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1161 // On large screens, we don't want to allow dialogs to just 1162 // stretch to fill the entire width of the screen to display 1163 // one line of text. First try doing the layout at a smaller 1164 // size to see if it will fit. 1165 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1166 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1167 int baseSize = 0; 1168 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1169 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1170 } 1171 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1172 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1173 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1174 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1175 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1176 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1177 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1178 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1179 goodMeasure = true; 1180 } else { 1181 // Didn't fit in that size... try expanding a bit. 1182 baseSize = (baseSize+desiredWindowWidth)/2; 1183 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1184 + baseSize); 1185 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1186 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1187 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1188 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1189 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1190 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1191 goodMeasure = true; 1192 } 1193 } 1194 } 1195 } 1196 1197 if (!goodMeasure) { 1198 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1199 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1200 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1201 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1202 windowSizeMayChange = true; 1203 } 1204 } 1205 1206 if (DBG) { 1207 System.out.println("======================================"); 1208 System.out.println("performTraversals -- after measure"); 1209 host.debug(); 1210 } 1211 1212 return windowSizeMayChange; 1213 } 1214 1215 /** 1216 * Modifies the input matrix such that it maps view-local coordinates to 1217 * on-screen coordinates. 1218 * 1219 * @param m input matrix to modify 1220 */ 1221 void transformMatrixToGlobal(Matrix m) { 1222 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1223 } 1224 1225 /** 1226 * Modifies the input matrix such that it maps on-screen coordinates to 1227 * view-local coordinates. 1228 * 1229 * @param m input matrix to modify 1230 */ 1231 void transformMatrixToLocal(Matrix m) { 1232 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1233 } 1234 1235 /* package */ WindowInsets getWindowInsets(boolean forceConstruct) { 1236 if (mLastWindowInsets == null || forceConstruct) { 1237 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1238 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1239 Rect contentInsets = mDispatchContentInsets; 1240 Rect stableInsets = mDispatchStableInsets; 1241 // For dispatch we preserve old logic, but for direct requests from Views we allow to 1242 // immediately use pending insets. 1243 if (!forceConstruct 1244 && (!mPendingContentInsets.equals(contentInsets) || 1245 !mPendingStableInsets.equals(stableInsets))) { 1246 contentInsets = mPendingContentInsets; 1247 stableInsets = mPendingStableInsets; 1248 } 1249 Rect outsets = mAttachInfo.mOutsets; 1250 if (outsets.left > 0 || outsets.top > 0 || outsets.right > 0 || outsets.bottom > 0) { 1251 contentInsets = new Rect(contentInsets.left + outsets.left, 1252 contentInsets.top + outsets.top, contentInsets.right + outsets.right, 1253 contentInsets.bottom + outsets.bottom); 1254 } 1255 mLastWindowInsets = new WindowInsets(contentInsets, 1256 null /* windowDecorInsets */, stableInsets, 1257 mContext.getResources().getConfiguration().isScreenRound()); 1258 } 1259 return mLastWindowInsets; 1260 } 1261 1262 void dispatchApplyInsets(View host) { 1263 host.dispatchApplyWindowInsets(getWindowInsets(true /* forceConstruct */)); 1264 } 1265 1266 private void performTraversals() { 1267 // cache mView since it is used so much below... 1268 final View host = mView; 1269 1270 if (DBG) { 1271 System.out.println("======================================"); 1272 System.out.println("performTraversals"); 1273 host.debug(); 1274 } 1275 1276 if (host == null || !mAdded) 1277 return; 1278 1279 mIsInTraversal = true; 1280 mWillDrawSoon = true; 1281 boolean windowSizeMayChange = false; 1282 boolean newSurface = false; 1283 boolean surfaceChanged = false; 1284 WindowManager.LayoutParams lp = mWindowAttributes; 1285 1286 int desiredWindowWidth; 1287 int desiredWindowHeight; 1288 1289 final int viewVisibility = getHostVisibility(); 1290 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1291 || mNewSurfaceNeeded; 1292 1293 WindowManager.LayoutParams params = null; 1294 if (mWindowAttributesChanged) { 1295 mWindowAttributesChanged = false; 1296 surfaceChanged = true; 1297 params = lp; 1298 } 1299 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1300 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1301 params = lp; 1302 mFullRedrawNeeded = true; 1303 mLayoutRequested = true; 1304 if (mLastInCompatMode) { 1305 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1306 mLastInCompatMode = false; 1307 } else { 1308 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1309 mLastInCompatMode = true; 1310 } 1311 } 1312 1313 mWindowAttributesChangesFlag = 0; 1314 1315 Rect frame = mWinFrame; 1316 if (mFirst) { 1317 mFullRedrawNeeded = true; 1318 mLayoutRequested = true; 1319 1320 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1321 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1322 // NOTE -- system code, won't try to do compat mode. 1323 Point size = new Point(); 1324 mDisplay.getRealSize(size); 1325 desiredWindowWidth = size.x; 1326 desiredWindowHeight = size.y; 1327 } else { 1328 DisplayMetrics packageMetrics = 1329 mView.getContext().getResources().getDisplayMetrics(); 1330 desiredWindowWidth = packageMetrics.widthPixels; 1331 desiredWindowHeight = packageMetrics.heightPixels; 1332 } 1333 1334 // We used to use the following condition to choose 32 bits drawing caches: 1335 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1336 // However, windows are now always 32 bits by default, so choose 32 bits 1337 mAttachInfo.mUse32BitDrawingCache = true; 1338 mAttachInfo.mHasWindowFocus = false; 1339 mAttachInfo.mWindowVisibility = viewVisibility; 1340 mAttachInfo.mRecomputeGlobalAttributes = false; 1341 viewVisibilityChanged = false; 1342 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1343 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1344 // Set the layout direction if it has not been set before (inherit is the default) 1345 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1346 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1347 } 1348 host.dispatchAttachedToWindow(mAttachInfo, 0); 1349 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1350 dispatchApplyInsets(host); 1351 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1352 1353 } else { 1354 desiredWindowWidth = frame.width(); 1355 desiredWindowHeight = frame.height(); 1356 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1357 if (DEBUG_ORIENTATION) Log.v(TAG, 1358 "View " + host + " resized to: " + frame); 1359 mFullRedrawNeeded = true; 1360 mLayoutRequested = true; 1361 windowSizeMayChange = true; 1362 } 1363 } 1364 1365 if (viewVisibilityChanged) { 1366 mAttachInfo.mWindowVisibility = viewVisibility; 1367 host.dispatchWindowVisibilityChanged(viewVisibility); 1368 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1369 destroyHardwareResources(); 1370 } 1371 if (viewVisibility == View.GONE) { 1372 // After making a window gone, we will count it as being 1373 // shown for the first time the next time it gets focus. 1374 mHasHadWindowFocus = false; 1375 } 1376 } 1377 1378 // Non-visible windows can't hold accessibility focus. 1379 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1380 host.clearAccessibilityFocus(); 1381 } 1382 1383 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1384 getRunQueue().executeActions(mAttachInfo.mHandler); 1385 1386 boolean insetsChanged = false; 1387 1388 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1389 if (layoutRequested) { 1390 1391 final Resources res = mView.getContext().getResources(); 1392 1393 if (mFirst) { 1394 // make sure touch mode code executes by setting cached value 1395 // to opposite of the added touch mode. 1396 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1397 ensureTouchModeLocally(mAddedTouchMode); 1398 } else { 1399 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1400 insetsChanged = true; 1401 } 1402 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1403 insetsChanged = true; 1404 } 1405 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1406 insetsChanged = true; 1407 } 1408 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1409 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1410 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1411 + mAttachInfo.mVisibleInsets); 1412 } 1413 if (!mPendingOutsets.equals(mAttachInfo.mOutsets)) { 1414 insetsChanged = true; 1415 } 1416 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1417 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1418 windowSizeMayChange = true; 1419 1420 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1421 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1422 // NOTE -- system code, won't try to do compat mode. 1423 Point size = new Point(); 1424 mDisplay.getRealSize(size); 1425 desiredWindowWidth = size.x; 1426 desiredWindowHeight = size.y; 1427 } else { 1428 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1429 desiredWindowWidth = packageMetrics.widthPixels; 1430 desiredWindowHeight = packageMetrics.heightPixels; 1431 } 1432 } 1433 } 1434 1435 // Ask host how big it wants to be 1436 windowSizeMayChange |= measureHierarchy(host, lp, res, 1437 desiredWindowWidth, desiredWindowHeight); 1438 } 1439 1440 if (collectViewAttributes()) { 1441 params = lp; 1442 } 1443 if (mAttachInfo.mForceReportNewAttributes) { 1444 mAttachInfo.mForceReportNewAttributes = false; 1445 params = lp; 1446 } 1447 1448 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1449 mAttachInfo.mViewVisibilityChanged = false; 1450 int resizeMode = mSoftInputMode & 1451 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1452 // If we are in auto resize mode, then we need to determine 1453 // what mode to use now. 1454 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1455 final int N = mAttachInfo.mScrollContainers.size(); 1456 for (int i=0; i<N; i++) { 1457 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1458 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1459 } 1460 } 1461 if (resizeMode == 0) { 1462 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1463 } 1464 if ((lp.softInputMode & 1465 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1466 lp.softInputMode = (lp.softInputMode & 1467 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1468 resizeMode; 1469 params = lp; 1470 } 1471 } 1472 } 1473 1474 if (params != null) { 1475 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1476 if (!PixelFormat.formatHasAlpha(params.format)) { 1477 params.format = PixelFormat.TRANSLUCENT; 1478 } 1479 } 1480 mAttachInfo.mOverscanRequested = (params.flags 1481 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1482 } 1483 1484 if (mApplyInsetsRequested) { 1485 mApplyInsetsRequested = false; 1486 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1487 dispatchApplyInsets(host); 1488 if (mLayoutRequested) { 1489 // Short-circuit catching a new layout request here, so 1490 // we don't need to go through two layout passes when things 1491 // change due to fitting system windows, which can happen a lot. 1492 windowSizeMayChange |= measureHierarchy(host, lp, 1493 mView.getContext().getResources(), 1494 desiredWindowWidth, desiredWindowHeight); 1495 } 1496 } 1497 1498 if (layoutRequested) { 1499 // Clear this now, so that if anything requests a layout in the 1500 // rest of this function we will catch it and re-run a full 1501 // layout pass. 1502 mLayoutRequested = false; 1503 } 1504 1505 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1506 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1507 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1508 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1509 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1510 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1511 1512 // Determine whether to compute insets. 1513 // If there are no inset listeners remaining then we may still need to compute 1514 // insets in case the old insets were non-empty and must be reset. 1515 final boolean computesInternalInsets = 1516 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1517 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1518 1519 boolean insetsPending = false; 1520 int relayoutResult = 0; 1521 1522 if (mFirst || windowShouldResize || insetsChanged || 1523 viewVisibilityChanged || params != null) { 1524 1525 if (viewVisibility == View.VISIBLE) { 1526 // If this window is giving internal insets to the window 1527 // manager, and it is being added or changing its visibility, 1528 // then we want to first give the window manager "fake" 1529 // insets to cause it to effectively ignore the content of 1530 // the window during layout. This avoids it briefly causing 1531 // other windows to resize/move based on the raw frame of the 1532 // window, waiting until we can finish laying out this window 1533 // and get back to the window manager with the ultimately 1534 // computed insets. 1535 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1536 } 1537 1538 if (mSurfaceHolder != null) { 1539 mSurfaceHolder.mSurfaceLock.lock(); 1540 mDrawingAllowed = true; 1541 } 1542 1543 boolean hwInitialized = false; 1544 boolean contentInsetsChanged = false; 1545 boolean hadSurface = mSurface.isValid(); 1546 1547 try { 1548 if (DEBUG_LAYOUT) { 1549 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1550 host.getMeasuredHeight() + ", params=" + params); 1551 } 1552 1553 if (mAttachInfo.mHardwareRenderer != null) { 1554 // relayoutWindow may decide to destroy mSurface. As that decision 1555 // happens in WindowManager service, we need to be defensive here 1556 // and stop using the surface in case it gets destroyed. 1557 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1558 // Animations were running so we need to push a frame 1559 // to resume them 1560 mDirty.set(0, 0, mWidth, mHeight); 1561 } 1562 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1563 } 1564 final int surfaceGenerationId = mSurface.getGenerationId(); 1565 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1566 1567 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1568 + " overscan=" + mPendingOverscanInsets.toShortString() 1569 + " content=" + mPendingContentInsets.toShortString() 1570 + " visible=" + mPendingVisibleInsets.toShortString() 1571 + " visible=" + mPendingStableInsets.toShortString() 1572 + " outsets=" + mPendingOutsets.toShortString() 1573 + " surface=" + mSurface); 1574 1575 if (mPendingConfiguration.seq != 0) { 1576 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1577 + mPendingConfiguration); 1578 updateConfiguration(mPendingConfiguration, !mFirst); 1579 mPendingConfiguration.seq = 0; 1580 } 1581 1582 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1583 mAttachInfo.mOverscanInsets); 1584 contentInsetsChanged = !mPendingContentInsets.equals( 1585 mAttachInfo.mContentInsets); 1586 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1587 mAttachInfo.mVisibleInsets); 1588 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1589 mAttachInfo.mStableInsets); 1590 final boolean outsetsChanged = !mPendingOutsets.equals(mAttachInfo.mOutsets); 1591 if (contentInsetsChanged) { 1592 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1593 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1594 + mAttachInfo.mContentInsets); 1595 } 1596 if (overscanInsetsChanged) { 1597 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1598 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1599 + mAttachInfo.mOverscanInsets); 1600 // Need to relayout with content insets. 1601 contentInsetsChanged = true; 1602 } 1603 if (stableInsetsChanged) { 1604 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1605 if (DEBUG_LAYOUT) Log.v(TAG, "Decor insets changing to: " 1606 + mAttachInfo.mStableInsets); 1607 // Need to relayout with content insets. 1608 contentInsetsChanged = true; 1609 } 1610 if (contentInsetsChanged || mLastSystemUiVisibility != 1611 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1612 || mLastOverscanRequested != mAttachInfo.mOverscanRequested 1613 || outsetsChanged) { 1614 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1615 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1616 mAttachInfo.mOutsets.set(mPendingOutsets); 1617 mApplyInsetsRequested = false; 1618 dispatchApplyInsets(host); 1619 } 1620 if (visibleInsetsChanged) { 1621 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1622 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1623 + mAttachInfo.mVisibleInsets); 1624 } 1625 1626 if (!hadSurface) { 1627 if (mSurface.isValid()) { 1628 // If we are creating a new surface, then we need to 1629 // completely redraw it. Also, when we get to the 1630 // point of drawing it we will hold off and schedule 1631 // a new traversal instead. This is so we can tell the 1632 // window manager about all of the windows being displayed 1633 // before actually drawing them, so it can display then 1634 // all at once. 1635 newSurface = true; 1636 mFullRedrawNeeded = true; 1637 mPreviousTransparentRegion.setEmpty(); 1638 1639 // Only initialize up-front if transparent regions are not 1640 // requested, otherwise defer to see if the entire window 1641 // will be transparent 1642 if (mAttachInfo.mHardwareRenderer != null) { 1643 try { 1644 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1645 mSurface); 1646 if (hwInitialized && (host.mPrivateFlags 1647 & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) == 0) { 1648 // Don't pre-allocate if transparent regions 1649 // are requested as they may not be needed 1650 mSurface.allocateBuffers(); 1651 } 1652 } catch (OutOfResourcesException e) { 1653 handleOutOfResourcesException(e); 1654 return; 1655 } 1656 } 1657 } 1658 } else if (!mSurface.isValid()) { 1659 // If the surface has been removed, then reset the scroll 1660 // positions. 1661 if (mLastScrolledFocus != null) { 1662 mLastScrolledFocus.clear(); 1663 } 1664 mScrollY = mCurScrollY = 0; 1665 if (mView instanceof RootViewSurfaceTaker) { 1666 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1667 } 1668 if (mScroller != null) { 1669 mScroller.abortAnimation(); 1670 } 1671 // Our surface is gone 1672 if (mAttachInfo.mHardwareRenderer != null && 1673 mAttachInfo.mHardwareRenderer.isEnabled()) { 1674 mAttachInfo.mHardwareRenderer.destroy(); 1675 } 1676 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1677 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1678 mFullRedrawNeeded = true; 1679 try { 1680 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1681 } catch (OutOfResourcesException e) { 1682 handleOutOfResourcesException(e); 1683 return; 1684 } 1685 } 1686 } catch (RemoteException e) { 1687 } 1688 1689 if (DEBUG_ORIENTATION) Log.v( 1690 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1691 1692 mAttachInfo.mWindowLeft = frame.left; 1693 mAttachInfo.mWindowTop = frame.top; 1694 1695 // !!FIXME!! This next section handles the case where we did not get the 1696 // window size we asked for. We should avoid this by getting a maximum size from 1697 // the window session beforehand. 1698 if (mWidth != frame.width() || mHeight != frame.height()) { 1699 mWidth = frame.width(); 1700 mHeight = frame.height(); 1701 } 1702 1703 if (mSurfaceHolder != null) { 1704 // The app owns the surface; tell it about what is going on. 1705 if (mSurface.isValid()) { 1706 // XXX .copyFrom() doesn't work! 1707 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1708 mSurfaceHolder.mSurface = mSurface; 1709 } 1710 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1711 mSurfaceHolder.mSurfaceLock.unlock(); 1712 if (mSurface.isValid()) { 1713 if (!hadSurface) { 1714 mSurfaceHolder.ungetCallbacks(); 1715 1716 mIsCreating = true; 1717 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1718 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1719 if (callbacks != null) { 1720 for (SurfaceHolder.Callback c : callbacks) { 1721 c.surfaceCreated(mSurfaceHolder); 1722 } 1723 } 1724 surfaceChanged = true; 1725 } 1726 if (surfaceChanged) { 1727 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1728 lp.format, mWidth, mHeight); 1729 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1730 if (callbacks != null) { 1731 for (SurfaceHolder.Callback c : callbacks) { 1732 c.surfaceChanged(mSurfaceHolder, lp.format, 1733 mWidth, mHeight); 1734 } 1735 } 1736 } 1737 mIsCreating = false; 1738 } else if (hadSurface) { 1739 mSurfaceHolder.ungetCallbacks(); 1740 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1741 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1742 if (callbacks != null) { 1743 for (SurfaceHolder.Callback c : callbacks) { 1744 c.surfaceDestroyed(mSurfaceHolder); 1745 } 1746 } 1747 mSurfaceHolder.mSurfaceLock.lock(); 1748 try { 1749 mSurfaceHolder.mSurface = new Surface(); 1750 } finally { 1751 mSurfaceHolder.mSurfaceLock.unlock(); 1752 } 1753 } 1754 } 1755 1756 final HardwareRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 1757 if (hardwareRenderer != null && hardwareRenderer.isEnabled()) { 1758 if (hwInitialized 1759 || mWidth != hardwareRenderer.getWidth() 1760 || mHeight != hardwareRenderer.getHeight()) { 1761 hardwareRenderer.setup(mWidth, mHeight, mAttachInfo, 1762 mWindowAttributes.surfaceInsets); 1763 if (!hwInitialized) { 1764 hardwareRenderer.invalidate(mSurface); 1765 mFullRedrawNeeded = true; 1766 } 1767 } 1768 } 1769 1770 if (!mStopped || mReportNextDraw) { 1771 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1772 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1773 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1774 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1775 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1776 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1777 1778 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1779 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1780 + " mHeight=" + mHeight 1781 + " measuredHeight=" + host.getMeasuredHeight() 1782 + " coveredInsetsChanged=" + contentInsetsChanged); 1783 1784 // Ask host how big it wants to be 1785 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1786 1787 // Implementation of weights from WindowManager.LayoutParams 1788 // We just grow the dimensions as needed and re-measure if 1789 // needs be 1790 int width = host.getMeasuredWidth(); 1791 int height = host.getMeasuredHeight(); 1792 boolean measureAgain = false; 1793 1794 if (lp.horizontalWeight > 0.0f) { 1795 width += (int) ((mWidth - width) * lp.horizontalWeight); 1796 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1797 MeasureSpec.EXACTLY); 1798 measureAgain = true; 1799 } 1800 if (lp.verticalWeight > 0.0f) { 1801 height += (int) ((mHeight - height) * lp.verticalWeight); 1802 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1803 MeasureSpec.EXACTLY); 1804 measureAgain = true; 1805 } 1806 1807 if (measureAgain) { 1808 if (DEBUG_LAYOUT) Log.v(TAG, 1809 "And hey let's measure once more: width=" + width 1810 + " height=" + height); 1811 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1812 } 1813 1814 layoutRequested = true; 1815 } 1816 } 1817 } else { 1818 // Not the first pass and no window/insets/visibility change but the window 1819 // may have moved and we need check that and if so to update the left and right 1820 // in the attach info. We translate only the window frame since on window move 1821 // the window manager tells us only for the new frame but the insets are the 1822 // same and we do not want to translate them more than once. 1823 1824 // TODO: Well, we are checking whether the frame has changed similarly 1825 // to how this is done for the insets. This is however incorrect since 1826 // the insets and the frame are translated. For example, the old frame 1827 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1828 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1829 // true since we are comparing a not translated value to a translated one. 1830 // This scenario is rare but we may want to fix that. 1831 1832 final boolean windowMoved = (mAttachInfo.mWindowLeft != frame.left 1833 || mAttachInfo.mWindowTop != frame.top); 1834 if (windowMoved) { 1835 if (mTranslator != null) { 1836 mTranslator.translateRectInScreenToAppWinFrame(frame); 1837 } 1838 mAttachInfo.mWindowLeft = frame.left; 1839 mAttachInfo.mWindowTop = frame.top; 1840 1841 // Update the light position for the new window offsets. 1842 if (mAttachInfo.mHardwareRenderer != null) { 1843 mAttachInfo.mHardwareRenderer.setLightCenter(mAttachInfo); 1844 } 1845 } 1846 } 1847 1848 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 1849 boolean triggerGlobalLayoutListener = didLayout 1850 || mAttachInfo.mRecomputeGlobalAttributes; 1851 if (didLayout) { 1852 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1853 1854 // By this point all views have been sized and positioned 1855 // We can compute the transparent area 1856 1857 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1858 // start out transparent 1859 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1860 host.getLocationInWindow(mTmpLocation); 1861 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1862 mTmpLocation[0] + host.mRight - host.mLeft, 1863 mTmpLocation[1] + host.mBottom - host.mTop); 1864 1865 host.gatherTransparentRegion(mTransparentRegion); 1866 if (mTranslator != null) { 1867 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1868 } 1869 1870 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1871 mPreviousTransparentRegion.set(mTransparentRegion); 1872 mFullRedrawNeeded = true; 1873 // reconfigure window manager 1874 try { 1875 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1876 } catch (RemoteException e) { 1877 } 1878 } 1879 } 1880 1881 if (DBG) { 1882 System.out.println("======================================"); 1883 System.out.println("performTraversals -- after setFrame"); 1884 host.debug(); 1885 } 1886 } 1887 1888 if (triggerGlobalLayoutListener) { 1889 mAttachInfo.mRecomputeGlobalAttributes = false; 1890 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1891 } 1892 1893 if (computesInternalInsets) { 1894 // Clear the original insets. 1895 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 1896 insets.reset(); 1897 1898 // Compute new insets in place. 1899 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1900 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1901 1902 // Tell the window manager. 1903 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1904 mLastGivenInsets.set(insets); 1905 1906 // Translate insets to screen coordinates if needed. 1907 final Rect contentInsets; 1908 final Rect visibleInsets; 1909 final Region touchableRegion; 1910 if (mTranslator != null) { 1911 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1912 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1913 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1914 } else { 1915 contentInsets = insets.contentInsets; 1916 visibleInsets = insets.visibleInsets; 1917 touchableRegion = insets.touchableRegion; 1918 } 1919 1920 try { 1921 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1922 contentInsets, visibleInsets, touchableRegion); 1923 } catch (RemoteException e) { 1924 } 1925 } 1926 } 1927 1928 boolean skipDraw = false; 1929 1930 if (mFirst) { 1931 // handle first focus request 1932 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1933 + mView.hasFocus()); 1934 if (mView != null) { 1935 if (!mView.hasFocus()) { 1936 mView.requestFocus(View.FOCUS_FORWARD); 1937 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1938 + mView.findFocus()); 1939 } else { 1940 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1941 + mView.findFocus()); 1942 } 1943 } 1944 } else if (mWindowsAnimating) { 1945 if (mRemainingFrameCount <= 0) { 1946 skipDraw = true; 1947 } 1948 mRemainingFrameCount--; 1949 } 1950 1951 mFirst = false; 1952 mWillDrawSoon = false; 1953 mNewSurfaceNeeded = false; 1954 mViewVisibility = viewVisibility; 1955 1956 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1957 final boolean imTarget = WindowManager.LayoutParams 1958 .mayUseInputMethod(mWindowAttributes.flags); 1959 if (imTarget != mLastWasImTarget) { 1960 mLastWasImTarget = imTarget; 1961 InputMethodManager imm = InputMethodManager.peekInstance(); 1962 if (imm != null && imTarget) { 1963 imm.onPreWindowFocus(mView, true /* hasWindowFocus */); 1964 imm.onPostWindowFocus(mView, mView.findFocus(), 1965 mWindowAttributes.softInputMode, 1966 !mHasHadWindowFocus, mWindowAttributes.flags); 1967 } 1968 } 1969 } 1970 1971 // Remember if we must report the next draw. 1972 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1973 mReportNextDraw = true; 1974 } 1975 1976 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || 1977 viewVisibility != View.VISIBLE; 1978 1979 if (!cancelDraw && !newSurface) { 1980 if (!skipDraw || mReportNextDraw) { 1981 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1982 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1983 mPendingTransitions.get(i).startChangingAnimations(); 1984 } 1985 mPendingTransitions.clear(); 1986 } 1987 1988 performDraw(); 1989 } 1990 } else { 1991 if (viewVisibility == View.VISIBLE) { 1992 // Try again 1993 scheduleTraversals(); 1994 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1995 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1996 mPendingTransitions.get(i).endChangingAnimations(); 1997 } 1998 mPendingTransitions.clear(); 1999 } 2000 } 2001 2002 mIsInTraversal = false; 2003 } 2004 2005 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2006 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 2007 try { 2008 if (!mWindowSession.outOfMemory(mWindow) && 2009 Process.myUid() != Process.SYSTEM_UID) { 2010 Slog.w(TAG, "No processes killed for memory; killing self"); 2011 Process.killProcess(Process.myPid()); 2012 } 2013 } catch (RemoteException ex) { 2014 } 2015 mLayoutRequested = true; // ask wm for a new surface next time. 2016 } 2017 2018 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2019 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2020 try { 2021 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2022 } finally { 2023 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2024 } 2025 } 2026 2027 /** 2028 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2029 * is currently undergoing a layout pass. 2030 * 2031 * @return whether the view hierarchy is currently undergoing a layout pass 2032 */ 2033 boolean isInLayout() { 2034 return mInLayout; 2035 } 2036 2037 /** 2038 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2039 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2040 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2041 * all children in that container hierarchy are measured and laid out at the end of the layout 2042 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2043 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2044 * we check all of those views to see if any still have pending layout requests, which 2045 * indicates that they were not correctly handled by their container hierarchy. If that is 2046 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2047 * to blank containers, and force a second request/measure/layout pass in this frame. If 2048 * more requestLayout() calls are received during that second layout pass, we post those 2049 * requests to the next frame to avoid possible infinite loops. 2050 * 2051 * <p>The return value from this method indicates whether the request should proceed 2052 * (if it is a request during the first layout pass) or should be skipped and posted to the 2053 * next frame (if it is a request during the second layout pass).</p> 2054 * 2055 * @param view the view that requested the layout. 2056 * 2057 * @return true if request should proceed, false otherwise. 2058 */ 2059 boolean requestLayoutDuringLayout(final View view) { 2060 if (view.mParent == null || view.mAttachInfo == null) { 2061 // Would not normally trigger another layout, so just let it pass through as usual 2062 return true; 2063 } 2064 if (!mLayoutRequesters.contains(view)) { 2065 mLayoutRequesters.add(view); 2066 } 2067 if (!mHandlingLayoutInLayoutRequest) { 2068 // Let the request proceed normally; it will be processed in a second layout pass 2069 // if necessary 2070 return true; 2071 } else { 2072 // Don't let the request proceed during the second layout pass. 2073 // It will post to the next frame instead. 2074 return false; 2075 } 2076 } 2077 2078 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2079 int desiredWindowHeight) { 2080 mLayoutRequested = false; 2081 mScrollMayChange = true; 2082 mInLayout = true; 2083 2084 final View host = mView; 2085 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2086 Log.v(TAG, "Laying out " + host + " to (" + 2087 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2088 } 2089 2090 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2091 try { 2092 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2093 2094 mInLayout = false; 2095 int numViewsRequestingLayout = mLayoutRequesters.size(); 2096 if (numViewsRequestingLayout > 0) { 2097 // requestLayout() was called during layout. 2098 // If no layout-request flags are set on the requesting views, there is no problem. 2099 // If some requests are still pending, then we need to clear those flags and do 2100 // a full request/measure/layout pass to handle this situation. 2101 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2102 false); 2103 if (validLayoutRequesters != null) { 2104 // Set this flag to indicate that any further requests are happening during 2105 // the second pass, which may result in posting those requests to the next 2106 // frame instead 2107 mHandlingLayoutInLayoutRequest = true; 2108 2109 // Process fresh layout requests, then measure and layout 2110 int numValidRequests = validLayoutRequesters.size(); 2111 for (int i = 0; i < numValidRequests; ++i) { 2112 final View view = validLayoutRequesters.get(i); 2113 Log.w("View", "requestLayout() improperly called by " + view + 2114 " during layout: running second layout pass"); 2115 view.requestLayout(); 2116 } 2117 measureHierarchy(host, lp, mView.getContext().getResources(), 2118 desiredWindowWidth, desiredWindowHeight); 2119 mInLayout = true; 2120 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2121 2122 mHandlingLayoutInLayoutRequest = false; 2123 2124 // Check the valid requests again, this time without checking/clearing the 2125 // layout flags, since requests happening during the second pass get noop'd 2126 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2127 if (validLayoutRequesters != null) { 2128 final ArrayList<View> finalRequesters = validLayoutRequesters; 2129 // Post second-pass requests to the next frame 2130 getRunQueue().post(new Runnable() { 2131 @Override 2132 public void run() { 2133 int numValidRequests = finalRequesters.size(); 2134 for (int i = 0; i < numValidRequests; ++i) { 2135 final View view = finalRequesters.get(i); 2136 Log.w("View", "requestLayout() improperly called by " + view + 2137 " during second layout pass: posting in next frame"); 2138 view.requestLayout(); 2139 } 2140 } 2141 }); 2142 } 2143 } 2144 2145 } 2146 } finally { 2147 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2148 } 2149 mInLayout = false; 2150 } 2151 2152 /** 2153 * This method is called during layout when there have been calls to requestLayout() during 2154 * layout. It walks through the list of views that requested layout to determine which ones 2155 * still need it, based on visibility in the hierarchy and whether they have already been 2156 * handled (as is usually the case with ListView children). 2157 * 2158 * @param layoutRequesters The list of views that requested layout during layout 2159 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2160 * If so, the FORCE_LAYOUT flag was not set on requesters. 2161 * @return A list of the actual views that still need to be laid out. 2162 */ 2163 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2164 boolean secondLayoutRequests) { 2165 2166 int numViewsRequestingLayout = layoutRequesters.size(); 2167 ArrayList<View> validLayoutRequesters = null; 2168 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2169 View view = layoutRequesters.get(i); 2170 if (view != null && view.mAttachInfo != null && view.mParent != null && 2171 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2172 View.PFLAG_FORCE_LAYOUT)) { 2173 boolean gone = false; 2174 View parent = view; 2175 // Only trigger new requests for views in a non-GONE hierarchy 2176 while (parent != null) { 2177 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2178 gone = true; 2179 break; 2180 } 2181 if (parent.mParent instanceof View) { 2182 parent = (View) parent.mParent; 2183 } else { 2184 parent = null; 2185 } 2186 } 2187 if (!gone) { 2188 if (validLayoutRequesters == null) { 2189 validLayoutRequesters = new ArrayList<View>(); 2190 } 2191 validLayoutRequesters.add(view); 2192 } 2193 } 2194 } 2195 if (!secondLayoutRequests) { 2196 // If we're checking the layout flags, then we need to clean them up also 2197 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2198 View view = layoutRequesters.get(i); 2199 while (view != null && 2200 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2201 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2202 if (view.mParent instanceof View) { 2203 view = (View) view.mParent; 2204 } else { 2205 view = null; 2206 } 2207 } 2208 } 2209 } 2210 layoutRequesters.clear(); 2211 return validLayoutRequesters; 2212 } 2213 2214 @Override 2215 public void requestTransparentRegion(View child) { 2216 // the test below should not fail unless someone is messing with us 2217 checkThread(); 2218 if (mView == child) { 2219 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2220 // Need to make sure we re-evaluate the window attributes next 2221 // time around, to ensure the window has the correct format. 2222 mWindowAttributesChanged = true; 2223 mWindowAttributesChangesFlag = 0; 2224 requestLayout(); 2225 } 2226 } 2227 2228 /** 2229 * Figures out the measure spec for the root view in a window based on it's 2230 * layout params. 2231 * 2232 * @param windowSize 2233 * The available width or height of the window 2234 * 2235 * @param rootDimension 2236 * The layout params for one dimension (width or height) of the 2237 * window. 2238 * 2239 * @return The measure spec to use to measure the root view. 2240 */ 2241 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2242 int measureSpec; 2243 switch (rootDimension) { 2244 2245 case ViewGroup.LayoutParams.MATCH_PARENT: 2246 // Window can't resize. Force root view to be windowSize. 2247 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2248 break; 2249 case ViewGroup.LayoutParams.WRAP_CONTENT: 2250 // Window can resize. Set max size for root view. 2251 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2252 break; 2253 default: 2254 // Window wants to be an exact size. Force root view to be that size. 2255 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2256 break; 2257 } 2258 return measureSpec; 2259 } 2260 2261 int mHardwareXOffset; 2262 int mHardwareYOffset; 2263 2264 @Override 2265 public void onHardwarePreDraw(DisplayListCanvas canvas) { 2266 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2267 } 2268 2269 @Override 2270 public void onHardwarePostDraw(DisplayListCanvas canvas) { 2271 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2272 } 2273 2274 /** 2275 * @hide 2276 */ 2277 void outputDisplayList(View view) { 2278 view.mRenderNode.output(); 2279 } 2280 2281 /** 2282 * @see #PROPERTY_PROFILE_RENDERING 2283 */ 2284 private void profileRendering(boolean enabled) { 2285 if (mProfileRendering) { 2286 mRenderProfilingEnabled = enabled; 2287 2288 if (mRenderProfiler != null) { 2289 mChoreographer.removeFrameCallback(mRenderProfiler); 2290 } 2291 if (mRenderProfilingEnabled) { 2292 if (mRenderProfiler == null) { 2293 mRenderProfiler = new Choreographer.FrameCallback() { 2294 @Override 2295 public void doFrame(long frameTimeNanos) { 2296 mDirty.set(0, 0, mWidth, mHeight); 2297 scheduleTraversals(); 2298 if (mRenderProfilingEnabled) { 2299 mChoreographer.postFrameCallback(mRenderProfiler); 2300 } 2301 } 2302 }; 2303 } 2304 mChoreographer.postFrameCallback(mRenderProfiler); 2305 } else { 2306 mRenderProfiler = null; 2307 } 2308 } 2309 } 2310 2311 /** 2312 * Called from draw() when DEBUG_FPS is enabled 2313 */ 2314 private void trackFPS() { 2315 // Tracks frames per second drawn. First value in a series of draws may be bogus 2316 // because it down not account for the intervening idle time 2317 long nowTime = System.currentTimeMillis(); 2318 if (mFpsStartTime < 0) { 2319 mFpsStartTime = mFpsPrevTime = nowTime; 2320 mFpsNumFrames = 0; 2321 } else { 2322 ++mFpsNumFrames; 2323 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2324 long frameTime = nowTime - mFpsPrevTime; 2325 long totalTime = nowTime - mFpsStartTime; 2326 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2327 mFpsPrevTime = nowTime; 2328 if (totalTime > 1000) { 2329 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2330 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2331 mFpsStartTime = nowTime; 2332 mFpsNumFrames = 0; 2333 } 2334 } 2335 } 2336 2337 private void performDraw() { 2338 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2339 return; 2340 } 2341 2342 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2343 mFullRedrawNeeded = false; 2344 2345 mIsDrawing = true; 2346 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2347 try { 2348 draw(fullRedrawNeeded); 2349 } finally { 2350 mIsDrawing = false; 2351 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2352 } 2353 2354 // For whatever reason we didn't create a HardwareRenderer, end any 2355 // hardware animations that are now dangling 2356 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2357 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2358 for (int i = 0; i < count; i++) { 2359 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2360 } 2361 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2362 } 2363 2364 if (mReportNextDraw) { 2365 mReportNextDraw = false; 2366 if (mAttachInfo.mHardwareRenderer != null) { 2367 mAttachInfo.mHardwareRenderer.fence(); 2368 } 2369 2370 if (LOCAL_LOGV) { 2371 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2372 } 2373 if (mSurfaceHolder != null && mSurface.isValid()) { 2374 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2375 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2376 if (callbacks != null) { 2377 for (SurfaceHolder.Callback c : callbacks) { 2378 if (c instanceof SurfaceHolder.Callback2) { 2379 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2380 mSurfaceHolder); 2381 } 2382 } 2383 } 2384 } 2385 try { 2386 mWindowSession.finishDrawing(mWindow); 2387 } catch (RemoteException e) { 2388 } 2389 } 2390 } 2391 2392 private void draw(boolean fullRedrawNeeded) { 2393 Surface surface = mSurface; 2394 if (!surface.isValid()) { 2395 return; 2396 } 2397 2398 if (DEBUG_FPS) { 2399 trackFPS(); 2400 } 2401 2402 if (!sFirstDrawComplete) { 2403 synchronized (sFirstDrawHandlers) { 2404 sFirstDrawComplete = true; 2405 final int count = sFirstDrawHandlers.size(); 2406 for (int i = 0; i< count; i++) { 2407 mHandler.post(sFirstDrawHandlers.get(i)); 2408 } 2409 } 2410 } 2411 2412 scrollToRectOrFocus(null, false); 2413 2414 if (mAttachInfo.mViewScrollChanged) { 2415 mAttachInfo.mViewScrollChanged = false; 2416 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2417 } 2418 2419 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2420 final int curScrollY; 2421 if (animating) { 2422 curScrollY = mScroller.getCurrY(); 2423 } else { 2424 curScrollY = mScrollY; 2425 } 2426 if (mCurScrollY != curScrollY) { 2427 mCurScrollY = curScrollY; 2428 fullRedrawNeeded = true; 2429 if (mView instanceof RootViewSurfaceTaker) { 2430 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2431 } 2432 } 2433 2434 final float appScale = mAttachInfo.mApplicationScale; 2435 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2436 2437 int resizeAlpha = 0; 2438 2439 final Rect dirty = mDirty; 2440 if (mSurfaceHolder != null) { 2441 // The app owns the surface, we won't draw. 2442 dirty.setEmpty(); 2443 if (animating && mScroller != null) { 2444 mScroller.abortAnimation(); 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 boolean accessibilityFocusDirty = false; 2478 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2479 if (drawable != null) { 2480 final Rect bounds = mAttachInfo.mTmpInvalRect; 2481 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2482 if (!hasFocus) { 2483 bounds.setEmpty(); 2484 } 2485 if (!bounds.equals(drawable.getBounds())) { 2486 accessibilityFocusDirty = true; 2487 } 2488 } 2489 2490 mAttachInfo.mDrawingTime = 2491 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2492 2493 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2494 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2495 // If accessibility focus moved, always invalidate the root. 2496 boolean invalidateRoot = accessibilityFocusDirty; 2497 2498 // Draw with hardware renderer. 2499 mIsAnimating = false; 2500 2501 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2502 mHardwareYOffset = yOffset; 2503 mHardwareXOffset = xOffset; 2504 invalidateRoot = true; 2505 } 2506 2507 if (invalidateRoot) { 2508 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2509 } 2510 2511 dirty.setEmpty(); 2512 2513 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2514 } else { 2515 // If we get here with a disabled & requested hardware renderer, something went 2516 // wrong (an invalidate posted right before we destroyed the hardware surface 2517 // for instance) so we should just bail out. Locking the surface with software 2518 // rendering at this point would lock it forever and prevent hardware renderer 2519 // from doing its job when it comes back. 2520 // Before we request a new frame we must however attempt to reinitiliaze the 2521 // hardware renderer if it's in requested state. This would happen after an 2522 // eglTerminate() for instance. 2523 if (mAttachInfo.mHardwareRenderer != null && 2524 !mAttachInfo.mHardwareRenderer.isEnabled() && 2525 mAttachInfo.mHardwareRenderer.isRequested()) { 2526 2527 try { 2528 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2529 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 2530 } catch (OutOfResourcesException e) { 2531 handleOutOfResourcesException(e); 2532 return; 2533 } 2534 2535 mFullRedrawNeeded = true; 2536 scheduleTraversals(); 2537 return; 2538 } 2539 2540 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2541 return; 2542 } 2543 } 2544 } 2545 2546 if (animating) { 2547 mFullRedrawNeeded = true; 2548 scheduleTraversals(); 2549 } 2550 } 2551 2552 /** 2553 * @return true if drawing was successful, false if an error occurred 2554 */ 2555 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2556 boolean scalingRequired, Rect dirty) { 2557 2558 // Draw with software renderer. 2559 final Canvas canvas; 2560 try { 2561 final int left = dirty.left; 2562 final int top = dirty.top; 2563 final int right = dirty.right; 2564 final int bottom = dirty.bottom; 2565 2566 canvas = mSurface.lockCanvas(dirty); 2567 2568 // The dirty rectangle can be modified by Surface.lockCanvas() 2569 //noinspection ConstantConditions 2570 if (left != dirty.left || top != dirty.top || right != dirty.right 2571 || bottom != dirty.bottom) { 2572 attachInfo.mIgnoreDirtyState = true; 2573 } 2574 2575 // TODO: Do this in native 2576 canvas.setDensity(mDensity); 2577 } catch (Surface.OutOfResourcesException e) { 2578 handleOutOfResourcesException(e); 2579 return false; 2580 } catch (IllegalArgumentException e) { 2581 Log.e(TAG, "Could not lock surface", e); 2582 // Don't assume this is due to out of memory, it could be 2583 // something else, and if it is something else then we could 2584 // kill stuff (or ourself) for no reason. 2585 mLayoutRequested = true; // ask wm for a new surface next time. 2586 return false; 2587 } 2588 2589 try { 2590 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2591 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2592 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2593 //canvas.drawARGB(255, 255, 0, 0); 2594 } 2595 2596 // If this bitmap's format includes an alpha channel, we 2597 // need to clear it before drawing so that the child will 2598 // properly re-composite its drawing on a transparent 2599 // background. This automatically respects the clip/dirty region 2600 // or 2601 // If we are applying an offset, we need to clear the area 2602 // where the offset doesn't appear to avoid having garbage 2603 // left in the blank areas. 2604 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2605 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2606 } 2607 2608 dirty.setEmpty(); 2609 mIsAnimating = false; 2610 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2611 2612 if (DEBUG_DRAW) { 2613 Context cxt = mView.getContext(); 2614 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2615 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2616 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2617 } 2618 try { 2619 canvas.translate(-xoff, -yoff); 2620 if (mTranslator != null) { 2621 mTranslator.translateCanvas(canvas); 2622 } 2623 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2624 attachInfo.mSetIgnoreDirtyState = false; 2625 2626 mView.draw(canvas); 2627 2628 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2629 } finally { 2630 if (!attachInfo.mSetIgnoreDirtyState) { 2631 // Only clear the flag if it was not set during the mView.draw() call 2632 attachInfo.mIgnoreDirtyState = false; 2633 } 2634 } 2635 } finally { 2636 try { 2637 surface.unlockCanvasAndPost(canvas); 2638 } catch (IllegalArgumentException e) { 2639 Log.e(TAG, "Could not unlock surface", e); 2640 mLayoutRequested = true; // ask wm for a new surface next time. 2641 //noinspection ReturnInsideFinallyBlock 2642 return false; 2643 } 2644 2645 if (LOCAL_LOGV) { 2646 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2647 } 2648 } 2649 return true; 2650 } 2651 2652 /** 2653 * We want to draw a highlight around the current accessibility focused. 2654 * Since adding a style for all possible view is not a viable option we 2655 * have this specialized drawing method. 2656 * 2657 * Note: We are doing this here to be able to draw the highlight for 2658 * virtual views in addition to real ones. 2659 * 2660 * @param canvas The canvas on which to draw. 2661 */ 2662 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2663 final Rect bounds = mAttachInfo.mTmpInvalRect; 2664 if (getAccessibilityFocusedRect(bounds)) { 2665 final Drawable drawable = getAccessibilityFocusedDrawable(); 2666 if (drawable != null) { 2667 drawable.setBounds(bounds); 2668 drawable.draw(canvas); 2669 } 2670 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2671 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2672 } 2673 } 2674 2675 private boolean getAccessibilityFocusedRect(Rect bounds) { 2676 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2677 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2678 return false; 2679 } 2680 2681 final View host = mAccessibilityFocusedHost; 2682 if (host == null || host.mAttachInfo == null) { 2683 return false; 2684 } 2685 2686 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2687 if (provider == null) { 2688 host.getBoundsOnScreen(bounds, true); 2689 } else if (mAccessibilityFocusedVirtualView != null) { 2690 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2691 } else { 2692 return false; 2693 } 2694 2695 // Transform the rect into window-relative coordinates. 2696 final AttachInfo attachInfo = mAttachInfo; 2697 bounds.offset(0, attachInfo.mViewRootImpl.mScrollY); 2698 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2699 if (!bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, 2700 attachInfo.mViewRootImpl.mHeight)) { 2701 // If no intersection, set bounds to empty. 2702 bounds.setEmpty(); 2703 } 2704 return !bounds.isEmpty(); 2705 } 2706 2707 private Drawable getAccessibilityFocusedDrawable() { 2708 // Lazily load the accessibility focus drawable. 2709 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2710 final TypedValue value = new TypedValue(); 2711 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2712 R.attr.accessibilityFocusedDrawable, value, true); 2713 if (resolved) { 2714 mAttachInfo.mAccessibilityFocusDrawable = 2715 mView.mContext.getDrawable(value.resourceId); 2716 } 2717 } 2718 return mAttachInfo.mAccessibilityFocusDrawable; 2719 } 2720 2721 /** 2722 * @hide 2723 */ 2724 public void setDrawDuringWindowsAnimating(boolean value) { 2725 mDrawDuringWindowsAnimating = value; 2726 if (value) { 2727 handleDispatchWindowAnimationStopped(); 2728 } 2729 } 2730 2731 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2732 final Rect ci = mAttachInfo.mContentInsets; 2733 final Rect vi = mAttachInfo.mVisibleInsets; 2734 int scrollY = 0; 2735 boolean handled = false; 2736 2737 if (vi.left > ci.left || vi.top > ci.top 2738 || vi.right > ci.right || vi.bottom > ci.bottom) { 2739 // We'll assume that we aren't going to change the scroll 2740 // offset, since we want to avoid that unless it is actually 2741 // going to make the focus visible... otherwise we scroll 2742 // all over the place. 2743 scrollY = mScrollY; 2744 // We can be called for two different situations: during a draw, 2745 // to update the scroll position if the focus has changed (in which 2746 // case 'rectangle' is null), or in response to a 2747 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2748 // is non-null and we just want to scroll to whatever that 2749 // rectangle is). 2750 final View focus = mView.findFocus(); 2751 if (focus == null) { 2752 return false; 2753 } 2754 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2755 if (focus != lastScrolledFocus) { 2756 // If the focus has changed, then ignore any requests to scroll 2757 // to a rectangle; first we want to make sure the entire focus 2758 // view is visible. 2759 rectangle = null; 2760 } 2761 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2762 + " rectangle=" + rectangle + " ci=" + ci 2763 + " vi=" + vi); 2764 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2765 // Optimization: if the focus hasn't changed since last 2766 // time, and no layout has happened, then just leave things 2767 // as they are. 2768 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2769 + mScrollY + " vi=" + vi.toShortString()); 2770 } else { 2771 // We need to determine if the currently focused view is 2772 // within the visible part of the window and, if not, apply 2773 // a pan so it can be seen. 2774 mLastScrolledFocus = new WeakReference<View>(focus); 2775 mScrollMayChange = false; 2776 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2777 // Try to find the rectangle from the focus view. 2778 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2779 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2780 + mView.getWidth() + " h=" + mView.getHeight() 2781 + " ci=" + ci.toShortString() 2782 + " vi=" + vi.toShortString()); 2783 if (rectangle == null) { 2784 focus.getFocusedRect(mTempRect); 2785 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2786 + ": focusRect=" + mTempRect.toShortString()); 2787 if (mView instanceof ViewGroup) { 2788 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2789 focus, mTempRect); 2790 } 2791 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2792 "Focus in window: focusRect=" 2793 + mTempRect.toShortString() 2794 + " visRect=" + mVisRect.toShortString()); 2795 } else { 2796 mTempRect.set(rectangle); 2797 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2798 "Request scroll to rect: " 2799 + mTempRect.toShortString() 2800 + " visRect=" + mVisRect.toShortString()); 2801 } 2802 if (mTempRect.intersect(mVisRect)) { 2803 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2804 "Focus window visible rect: " 2805 + mTempRect.toShortString()); 2806 if (mTempRect.height() > 2807 (mView.getHeight()-vi.top-vi.bottom)) { 2808 // If the focus simply is not going to fit, then 2809 // best is probably just to leave things as-is. 2810 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2811 "Too tall; leaving scrollY=" + scrollY); 2812 } else if ((mTempRect.top-scrollY) < vi.top) { 2813 scrollY -= vi.top - (mTempRect.top-scrollY); 2814 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2815 "Top covered; scrollY=" + scrollY); 2816 } else if ((mTempRect.bottom-scrollY) 2817 > (mView.getHeight()-vi.bottom)) { 2818 scrollY += (mTempRect.bottom-scrollY) 2819 - (mView.getHeight()-vi.bottom); 2820 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2821 "Bottom covered; scrollY=" + scrollY); 2822 } 2823 handled = true; 2824 } 2825 } 2826 } 2827 } 2828 2829 if (scrollY != mScrollY) { 2830 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2831 + mScrollY + " , new=" + scrollY); 2832 if (!immediate) { 2833 if (mScroller == null) { 2834 mScroller = new Scroller(mView.getContext()); 2835 } 2836 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2837 } else if (mScroller != null) { 2838 mScroller.abortAnimation(); 2839 } 2840 mScrollY = scrollY; 2841 } 2842 2843 return handled; 2844 } 2845 2846 /** 2847 * @hide 2848 */ 2849 public View getAccessibilityFocusedHost() { 2850 return mAccessibilityFocusedHost; 2851 } 2852 2853 /** 2854 * @hide 2855 */ 2856 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2857 return mAccessibilityFocusedVirtualView; 2858 } 2859 2860 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2861 // If we have a virtual view with accessibility focus we need 2862 // to clear the focus and invalidate the virtual view bounds. 2863 if (mAccessibilityFocusedVirtualView != null) { 2864 2865 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2866 View focusHost = mAccessibilityFocusedHost; 2867 2868 // Wipe the state of the current accessibility focus since 2869 // the call into the provider to clear accessibility focus 2870 // will fire an accessibility event which will end up calling 2871 // this method and we want to have clean state when this 2872 // invocation happens. 2873 mAccessibilityFocusedHost = null; 2874 mAccessibilityFocusedVirtualView = null; 2875 2876 // Clear accessibility focus on the host after clearing state since 2877 // this method may be reentrant. 2878 focusHost.clearAccessibilityFocusNoCallbacks(); 2879 2880 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2881 if (provider != null) { 2882 // Invalidate the area of the cleared accessibility focus. 2883 focusNode.getBoundsInParent(mTempRect); 2884 focusHost.invalidate(mTempRect); 2885 // Clear accessibility focus in the virtual node. 2886 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2887 focusNode.getSourceNodeId()); 2888 provider.performAction(virtualNodeId, 2889 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2890 } 2891 focusNode.recycle(); 2892 } 2893 if (mAccessibilityFocusedHost != null) { 2894 // Clear accessibility focus in the view. 2895 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2896 } 2897 2898 // Set the new focus host and node. 2899 mAccessibilityFocusedHost = view; 2900 mAccessibilityFocusedVirtualView = node; 2901 2902 if (mAttachInfo.mHardwareRenderer != null) { 2903 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2904 } 2905 } 2906 2907 @Override 2908 public void requestChildFocus(View child, View focused) { 2909 if (DEBUG_INPUT_RESIZE) { 2910 Log.v(TAG, "Request child focus: focus now " + focused); 2911 } 2912 checkThread(); 2913 scheduleTraversals(); 2914 } 2915 2916 @Override 2917 public void clearChildFocus(View child) { 2918 if (DEBUG_INPUT_RESIZE) { 2919 Log.v(TAG, "Clearing child focus"); 2920 } 2921 checkThread(); 2922 scheduleTraversals(); 2923 } 2924 2925 @Override 2926 public ViewParent getParentForAccessibility() { 2927 return null; 2928 } 2929 2930 @Override 2931 public void focusableViewAvailable(View v) { 2932 checkThread(); 2933 if (mView != null) { 2934 if (!mView.hasFocus()) { 2935 v.requestFocus(); 2936 } else { 2937 // the one case where will transfer focus away from the current one 2938 // is if the current view is a view group that prefers to give focus 2939 // to its children first AND the view is a descendant of it. 2940 View focused = mView.findFocus(); 2941 if (focused instanceof ViewGroup) { 2942 ViewGroup group = (ViewGroup) focused; 2943 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2944 && isViewDescendantOf(v, focused)) { 2945 v.requestFocus(); 2946 } 2947 } 2948 } 2949 } 2950 } 2951 2952 @Override 2953 public void recomputeViewAttributes(View child) { 2954 checkThread(); 2955 if (mView == child) { 2956 mAttachInfo.mRecomputeGlobalAttributes = true; 2957 if (!mWillDrawSoon) { 2958 scheduleTraversals(); 2959 } 2960 } 2961 } 2962 2963 void dispatchDetachedFromWindow() { 2964 if (mView != null && mView.mAttachInfo != null) { 2965 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2966 mView.dispatchDetachedFromWindow(); 2967 } 2968 2969 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2970 mAccessibilityManager.removeAccessibilityStateChangeListener( 2971 mAccessibilityInteractionConnectionManager); 2972 mAccessibilityManager.removeHighTextContrastStateChangeListener( 2973 mHighContrastTextManager); 2974 removeSendWindowContentChangedCallback(); 2975 2976 destroyHardwareRenderer(); 2977 2978 setAccessibilityFocus(null, null); 2979 2980 mView.assignParent(null); 2981 mView = null; 2982 mAttachInfo.mRootView = null; 2983 2984 mSurface.release(); 2985 2986 if (mInputQueueCallback != null && mInputQueue != null) { 2987 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2988 mInputQueue.dispose(); 2989 mInputQueueCallback = null; 2990 mInputQueue = null; 2991 } 2992 if (mInputEventReceiver != null) { 2993 mInputEventReceiver.dispose(); 2994 mInputEventReceiver = null; 2995 } 2996 try { 2997 mWindowSession.remove(mWindow); 2998 } catch (RemoteException e) { 2999 } 3000 3001 // Dispose the input channel after removing the window so the Window Manager 3002 // doesn't interpret the input channel being closed as an abnormal termination. 3003 if (mInputChannel != null) { 3004 mInputChannel.dispose(); 3005 mInputChannel = null; 3006 } 3007 3008 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3009 3010 unscheduleTraversals(); 3011 } 3012 3013 void updateConfiguration(Configuration config, boolean force) { 3014 if (DEBUG_CONFIGURATION) Log.v(TAG, 3015 "Applying new config to window " 3016 + mWindowAttributes.getTitle() 3017 + ": " + config); 3018 3019 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3020 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3021 config = new Configuration(config); 3022 ci.applyToConfiguration(mNoncompatDensity, config); 3023 } 3024 3025 synchronized (sConfigCallbacks) { 3026 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3027 sConfigCallbacks.get(i).onConfigurationChanged(config); 3028 } 3029 } 3030 if (mView != null) { 3031 // At this point the resources have been updated to 3032 // have the most recent config, whatever that is. Use 3033 // the one in them which may be newer. 3034 config = mView.getResources().getConfiguration(); 3035 if (force || mLastConfiguration.diff(config) != 0) { 3036 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3037 final int currentLayoutDirection = config.getLayoutDirection(); 3038 mLastConfiguration.setTo(config); 3039 if (lastLayoutDirection != currentLayoutDirection && 3040 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3041 mView.setLayoutDirection(currentLayoutDirection); 3042 } 3043 mView.dispatchConfigurationChanged(config); 3044 } 3045 } 3046 } 3047 3048 /** 3049 * Return true if child is an ancestor of parent, (or equal to the parent). 3050 */ 3051 public static boolean isViewDescendantOf(View child, View parent) { 3052 if (child == parent) { 3053 return true; 3054 } 3055 3056 final ViewParent theParent = child.getParent(); 3057 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3058 } 3059 3060 private final static int MSG_INVALIDATE = 1; 3061 private final static int MSG_INVALIDATE_RECT = 2; 3062 private final static int MSG_DIE = 3; 3063 private final static int MSG_RESIZED = 4; 3064 private final static int MSG_RESIZED_REPORT = 5; 3065 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3066 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3067 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3068 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3069 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3070 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 3071 private final static int MSG_CHECK_FOCUS = 13; 3072 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3073 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3074 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3075 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3076 private final static int MSG_UPDATE_CONFIGURATION = 18; 3077 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3078 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3079 private final static int MSG_INVALIDATE_WORLD = 22; 3080 private final static int MSG_WINDOW_MOVED = 23; 3081 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 24; 3082 private final static int MSG_DISPATCH_WINDOW_SHOWN = 25; 3083 private final static int MSG_DISPATCH_WINDOW_ANIMATION_STOPPED = 26; 3084 private final static int MSG_DISPATCH_WINDOW_ANIMATION_STARTED = 27; 3085 3086 final class ViewRootHandler extends Handler { 3087 @Override 3088 public String getMessageName(Message message) { 3089 switch (message.what) { 3090 case MSG_INVALIDATE: 3091 return "MSG_INVALIDATE"; 3092 case MSG_INVALIDATE_RECT: 3093 return "MSG_INVALIDATE_RECT"; 3094 case MSG_DIE: 3095 return "MSG_DIE"; 3096 case MSG_RESIZED: 3097 return "MSG_RESIZED"; 3098 case MSG_RESIZED_REPORT: 3099 return "MSG_RESIZED_REPORT"; 3100 case MSG_WINDOW_FOCUS_CHANGED: 3101 return "MSG_WINDOW_FOCUS_CHANGED"; 3102 case MSG_DISPATCH_INPUT_EVENT: 3103 return "MSG_DISPATCH_INPUT_EVENT"; 3104 case MSG_DISPATCH_APP_VISIBILITY: 3105 return "MSG_DISPATCH_APP_VISIBILITY"; 3106 case MSG_DISPATCH_GET_NEW_SURFACE: 3107 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3108 case MSG_DISPATCH_KEY_FROM_IME: 3109 return "MSG_DISPATCH_KEY_FROM_IME"; 3110 case MSG_FINISH_INPUT_CONNECTION: 3111 return "MSG_FINISH_INPUT_CONNECTION"; 3112 case MSG_CHECK_FOCUS: 3113 return "MSG_CHECK_FOCUS"; 3114 case MSG_CLOSE_SYSTEM_DIALOGS: 3115 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3116 case MSG_DISPATCH_DRAG_EVENT: 3117 return "MSG_DISPATCH_DRAG_EVENT"; 3118 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3119 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3120 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3121 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3122 case MSG_UPDATE_CONFIGURATION: 3123 return "MSG_UPDATE_CONFIGURATION"; 3124 case MSG_PROCESS_INPUT_EVENTS: 3125 return "MSG_PROCESS_INPUT_EVENTS"; 3126 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3127 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3128 case MSG_DISPATCH_WINDOW_ANIMATION_STARTED: 3129 return "MSG_DISPATCH_WINDOW_ANIMATION_STARTED"; 3130 case MSG_DISPATCH_WINDOW_ANIMATION_STOPPED: 3131 return "MSG_DISPATCH_WINDOW_ANIMATION_STOPPED"; 3132 case MSG_WINDOW_MOVED: 3133 return "MSG_WINDOW_MOVED"; 3134 case MSG_SYNTHESIZE_INPUT_EVENT: 3135 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3136 case MSG_DISPATCH_WINDOW_SHOWN: 3137 return "MSG_DISPATCH_WINDOW_SHOWN"; 3138 } 3139 return super.getMessageName(message); 3140 } 3141 3142 @Override 3143 public void handleMessage(Message msg) { 3144 switch (msg.what) { 3145 case MSG_INVALIDATE: 3146 ((View) msg.obj).invalidate(); 3147 break; 3148 case MSG_INVALIDATE_RECT: 3149 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3150 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3151 info.recycle(); 3152 break; 3153 case MSG_PROCESS_INPUT_EVENTS: 3154 mProcessInputEventsScheduled = false; 3155 doProcessInputEvents(); 3156 break; 3157 case MSG_DISPATCH_APP_VISIBILITY: 3158 handleAppVisibility(msg.arg1 != 0); 3159 break; 3160 case MSG_DISPATCH_GET_NEW_SURFACE: 3161 handleGetNewSurface(); 3162 break; 3163 case MSG_RESIZED: { 3164 // Recycled in the fall through... 3165 SomeArgs args = (SomeArgs) msg.obj; 3166 if (mWinFrame.equals(args.arg1) 3167 && mPendingOverscanInsets.equals(args.arg5) 3168 && mPendingContentInsets.equals(args.arg2) 3169 && mPendingStableInsets.equals(args.arg6) 3170 && mPendingVisibleInsets.equals(args.arg3) 3171 && mPendingOutsets.equals(args.arg7) 3172 && args.arg4 == null) { 3173 break; 3174 } 3175 } // fall through... 3176 case MSG_RESIZED_REPORT: 3177 if (mAdded) { 3178 SomeArgs args = (SomeArgs) msg.obj; 3179 3180 Configuration config = (Configuration) args.arg4; 3181 if (config != null) { 3182 updateConfiguration(config, false); 3183 } 3184 3185 mWinFrame.set((Rect) args.arg1); 3186 mPendingOverscanInsets.set((Rect) args.arg5); 3187 mPendingContentInsets.set((Rect) args.arg2); 3188 mPendingStableInsets.set((Rect) args.arg6); 3189 mPendingVisibleInsets.set((Rect) args.arg3); 3190 mPendingOutsets.set((Rect) args.arg7); 3191 3192 args.recycle(); 3193 3194 if (msg.what == MSG_RESIZED_REPORT) { 3195 mReportNextDraw = true; 3196 } 3197 3198 requestLayout(); 3199 } 3200 break; 3201 case MSG_WINDOW_MOVED: 3202 if (mAdded) { 3203 final int w = mWinFrame.width(); 3204 final int h = mWinFrame.height(); 3205 final int l = msg.arg1; 3206 final int t = msg.arg2; 3207 mWinFrame.left = l; 3208 mWinFrame.right = l + w; 3209 mWinFrame.top = t; 3210 mWinFrame.bottom = t + h; 3211 3212 requestLayout(); 3213 } 3214 break; 3215 case MSG_WINDOW_FOCUS_CHANGED: { 3216 if (mAdded) { 3217 boolean hasWindowFocus = msg.arg1 != 0; 3218 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3219 3220 profileRendering(hasWindowFocus); 3221 3222 if (hasWindowFocus) { 3223 boolean inTouchMode = msg.arg2 != 0; 3224 ensureTouchModeLocally(inTouchMode); 3225 3226 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3227 mFullRedrawNeeded = true; 3228 try { 3229 final WindowManager.LayoutParams lp = mWindowAttributes; 3230 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3231 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3232 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 3233 } catch (OutOfResourcesException e) { 3234 Log.e(TAG, "OutOfResourcesException locking surface", e); 3235 try { 3236 if (!mWindowSession.outOfMemory(mWindow)) { 3237 Slog.w(TAG, "No processes killed for memory; killing self"); 3238 Process.killProcess(Process.myPid()); 3239 } 3240 } catch (RemoteException ex) { 3241 } 3242 // Retry in a bit. 3243 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3244 return; 3245 } 3246 } 3247 } 3248 3249 mLastWasImTarget = WindowManager.LayoutParams 3250 .mayUseInputMethod(mWindowAttributes.flags); 3251 3252 InputMethodManager imm = InputMethodManager.peekInstance(); 3253 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3254 imm.onPreWindowFocus(mView, hasWindowFocus); 3255 } 3256 if (mView != null) { 3257 mAttachInfo.mKeyDispatchState.reset(); 3258 mView.dispatchWindowFocusChanged(hasWindowFocus); 3259 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3260 } 3261 3262 // Note: must be done after the focus change callbacks, 3263 // so all of the view state is set up correctly. 3264 if (hasWindowFocus) { 3265 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3266 imm.onPostWindowFocus(mView, mView.findFocus(), 3267 mWindowAttributes.softInputMode, 3268 !mHasHadWindowFocus, mWindowAttributes.flags); 3269 } 3270 // Clear the forward bit. We can just do this directly, since 3271 // the window manager doesn't care about it. 3272 mWindowAttributes.softInputMode &= 3273 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3274 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3275 .softInputMode &= 3276 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3277 mHasHadWindowFocus = true; 3278 } 3279 3280 if (mView != null && mAccessibilityManager.isEnabled()) { 3281 if (hasWindowFocus) { 3282 mView.sendAccessibilityEvent( 3283 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3284 } 3285 } 3286 } 3287 } break; 3288 case MSG_DIE: 3289 doDie(); 3290 break; 3291 case MSG_DISPATCH_INPUT_EVENT: { 3292 SomeArgs args = (SomeArgs)msg.obj; 3293 InputEvent event = (InputEvent)args.arg1; 3294 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3295 enqueueInputEvent(event, receiver, 0, true); 3296 args.recycle(); 3297 } break; 3298 case MSG_SYNTHESIZE_INPUT_EVENT: { 3299 InputEvent event = (InputEvent)msg.obj; 3300 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3301 } break; 3302 case MSG_DISPATCH_KEY_FROM_IME: { 3303 if (LOCAL_LOGV) Log.v( 3304 TAG, "Dispatching key " 3305 + msg.obj + " from IME to " + mView); 3306 KeyEvent event = (KeyEvent)msg.obj; 3307 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3308 // The IME is trying to say this event is from the 3309 // system! Bad bad bad! 3310 //noinspection UnusedAssignment 3311 event = KeyEvent.changeFlags(event, event.getFlags() & 3312 ~KeyEvent.FLAG_FROM_SYSTEM); 3313 } 3314 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3315 } break; 3316 case MSG_FINISH_INPUT_CONNECTION: { 3317 InputMethodManager imm = InputMethodManager.peekInstance(); 3318 if (imm != null) { 3319 imm.reportFinishInputConnection((InputConnection)msg.obj); 3320 } 3321 } break; 3322 case MSG_CHECK_FOCUS: { 3323 InputMethodManager imm = InputMethodManager.peekInstance(); 3324 if (imm != null) { 3325 imm.checkFocus(); 3326 } 3327 } break; 3328 case MSG_CLOSE_SYSTEM_DIALOGS: { 3329 if (mView != null) { 3330 mView.onCloseSystemDialogs((String)msg.obj); 3331 } 3332 } break; 3333 case MSG_DISPATCH_DRAG_EVENT: 3334 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3335 DragEvent event = (DragEvent)msg.obj; 3336 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3337 handleDragEvent(event); 3338 } break; 3339 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3340 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3341 } break; 3342 case MSG_UPDATE_CONFIGURATION: { 3343 Configuration config = (Configuration)msg.obj; 3344 if (config.isOtherSeqNewer(mLastConfiguration)) { 3345 config = mLastConfiguration; 3346 } 3347 updateConfiguration(config, false); 3348 } break; 3349 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3350 setAccessibilityFocus(null, null); 3351 } break; 3352 case MSG_DISPATCH_WINDOW_ANIMATION_STARTED: { 3353 int remainingFrameCount = msg.arg1; 3354 handleDispatchWindowAnimationStarted(remainingFrameCount); 3355 } break; 3356 case MSG_DISPATCH_WINDOW_ANIMATION_STOPPED: { 3357 handleDispatchWindowAnimationStopped(); 3358 } break; 3359 case MSG_INVALIDATE_WORLD: { 3360 if (mView != null) { 3361 invalidateWorld(mView); 3362 } 3363 } break; 3364 case MSG_DISPATCH_WINDOW_SHOWN: { 3365 handleDispatchWindowShown(); 3366 } 3367 } 3368 } 3369 } 3370 3371 final ViewRootHandler mHandler = new ViewRootHandler(); 3372 3373 /** 3374 * Something in the current window tells us we need to change the touch mode. For 3375 * example, we are not in touch mode, and the user touches the screen. 3376 * 3377 * If the touch mode has changed, tell the window manager, and handle it locally. 3378 * 3379 * @param inTouchMode Whether we want to be in touch mode. 3380 * @return True if the touch mode changed and focus changed was changed as a result 3381 */ 3382 boolean ensureTouchMode(boolean inTouchMode) { 3383 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3384 + "touch mode is " + mAttachInfo.mInTouchMode); 3385 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3386 3387 // tell the window manager 3388 try { 3389 if (!isInLocalFocusMode()) { 3390 mWindowSession.setInTouchMode(inTouchMode); 3391 } 3392 } catch (RemoteException e) { 3393 throw new RuntimeException(e); 3394 } 3395 3396 // handle the change 3397 return ensureTouchModeLocally(inTouchMode); 3398 } 3399 3400 /** 3401 * Ensure that the touch mode for this window is set, and if it is changing, 3402 * take the appropriate action. 3403 * @param inTouchMode Whether we want to be in touch mode. 3404 * @return True if the touch mode changed and focus changed was changed as a result 3405 */ 3406 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3407 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3408 + "touch mode is " + mAttachInfo.mInTouchMode); 3409 3410 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3411 3412 mAttachInfo.mInTouchMode = inTouchMode; 3413 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3414 3415 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3416 } 3417 3418 private boolean enterTouchMode() { 3419 if (mView != null && mView.hasFocus()) { 3420 // note: not relying on mFocusedView here because this could 3421 // be when the window is first being added, and mFocused isn't 3422 // set yet. 3423 final View focused = mView.findFocus(); 3424 if (focused != null && !focused.isFocusableInTouchMode()) { 3425 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3426 if (ancestorToTakeFocus != null) { 3427 // there is an ancestor that wants focus after its 3428 // descendants that is focusable in touch mode.. give it 3429 // focus 3430 return ancestorToTakeFocus.requestFocus(); 3431 } else { 3432 // There's nothing to focus. Clear and propagate through the 3433 // hierarchy, but don't attempt to place new focus. 3434 focused.clearFocusInternal(null, true, false); 3435 return true; 3436 } 3437 } 3438 } 3439 return false; 3440 } 3441 3442 /** 3443 * Find an ancestor of focused that wants focus after its descendants and is 3444 * focusable in touch mode. 3445 * @param focused The currently focused view. 3446 * @return An appropriate view, or null if no such view exists. 3447 */ 3448 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3449 ViewParent parent = focused.getParent(); 3450 while (parent instanceof ViewGroup) { 3451 final ViewGroup vgParent = (ViewGroup) parent; 3452 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3453 && vgParent.isFocusableInTouchMode()) { 3454 return vgParent; 3455 } 3456 if (vgParent.isRootNamespace()) { 3457 return null; 3458 } else { 3459 parent = vgParent.getParent(); 3460 } 3461 } 3462 return null; 3463 } 3464 3465 private boolean leaveTouchMode() { 3466 if (mView != null) { 3467 if (mView.hasFocus()) { 3468 View focusedView = mView.findFocus(); 3469 if (!(focusedView instanceof ViewGroup)) { 3470 // some view has focus, let it keep it 3471 return false; 3472 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3473 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3474 // some view group has focus, and doesn't prefer its children 3475 // over itself for focus, so let them keep it. 3476 return false; 3477 } 3478 } 3479 3480 // find the best view to give focus to in this brave new non-touch-mode 3481 // world 3482 final View focused = focusSearch(null, View.FOCUS_DOWN); 3483 if (focused != null) { 3484 return focused.requestFocus(View.FOCUS_DOWN); 3485 } 3486 } 3487 return false; 3488 } 3489 3490 /** 3491 * Base class for implementing a stage in the chain of responsibility 3492 * for processing input events. 3493 * <p> 3494 * Events are delivered to the stage by the {@link #deliver} method. The stage 3495 * then has the choice of finishing the event or forwarding it to the next stage. 3496 * </p> 3497 */ 3498 abstract class InputStage { 3499 private final InputStage mNext; 3500 3501 protected static final int FORWARD = 0; 3502 protected static final int FINISH_HANDLED = 1; 3503 protected static final int FINISH_NOT_HANDLED = 2; 3504 3505 /** 3506 * Creates an input stage. 3507 * @param next The next stage to which events should be forwarded. 3508 */ 3509 public InputStage(InputStage next) { 3510 mNext = next; 3511 } 3512 3513 /** 3514 * Delivers an event to be processed. 3515 */ 3516 public final void deliver(QueuedInputEvent q) { 3517 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3518 forward(q); 3519 } else if (shouldDropInputEvent(q)) { 3520 finish(q, false); 3521 } else { 3522 apply(q, onProcess(q)); 3523 } 3524 } 3525 3526 /** 3527 * Marks the the input event as finished then forwards it to the next stage. 3528 */ 3529 protected void finish(QueuedInputEvent q, boolean handled) { 3530 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3531 if (handled) { 3532 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3533 } 3534 forward(q); 3535 } 3536 3537 /** 3538 * Forwards the event to the next stage. 3539 */ 3540 protected void forward(QueuedInputEvent q) { 3541 onDeliverToNext(q); 3542 } 3543 3544 /** 3545 * Applies a result code from {@link #onProcess} to the specified event. 3546 */ 3547 protected void apply(QueuedInputEvent q, int result) { 3548 if (result == FORWARD) { 3549 forward(q); 3550 } else if (result == FINISH_HANDLED) { 3551 finish(q, true); 3552 } else if (result == FINISH_NOT_HANDLED) { 3553 finish(q, false); 3554 } else { 3555 throw new IllegalArgumentException("Invalid result: " + result); 3556 } 3557 } 3558 3559 /** 3560 * Called when an event is ready to be processed. 3561 * @return A result code indicating how the event was handled. 3562 */ 3563 protected int onProcess(QueuedInputEvent q) { 3564 return FORWARD; 3565 } 3566 3567 /** 3568 * Called when an event is being delivered to the next stage. 3569 */ 3570 protected void onDeliverToNext(QueuedInputEvent q) { 3571 if (DEBUG_INPUT_STAGES) { 3572 Log.v(TAG, "Done with " + getClass().getSimpleName() + ". " + q); 3573 } 3574 if (mNext != null) { 3575 mNext.deliver(q); 3576 } else { 3577 finishInputEvent(q); 3578 } 3579 } 3580 3581 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3582 if (mView == null || !mAdded) { 3583 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3584 return true; 3585 } else if ((!mAttachInfo.mHasWindowFocus 3586 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) || mStopped 3587 || (mPausedForTransition && !isBack(q.mEvent))) { 3588 // This is a focus event and the window doesn't currently have input focus or 3589 // has stopped. This could be an event that came back from the previous stage 3590 // but the window has lost focus or stopped in the meantime. 3591 if (isTerminalInputEvent(q.mEvent)) { 3592 // Don't drop terminal input events, however mark them as canceled. 3593 q.mEvent.cancel(); 3594 Slog.w(TAG, "Cancelling event due to no window focus: " + q.mEvent); 3595 return false; 3596 } 3597 3598 // Drop non-terminal input events. 3599 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3600 return true; 3601 } 3602 return false; 3603 } 3604 3605 void dump(String prefix, PrintWriter writer) { 3606 if (mNext != null) { 3607 mNext.dump(prefix, writer); 3608 } 3609 } 3610 3611 private boolean isBack(InputEvent event) { 3612 if (event instanceof KeyEvent) { 3613 return ((KeyEvent) event).getKeyCode() == KeyEvent.KEYCODE_BACK; 3614 } else { 3615 return false; 3616 } 3617 } 3618 } 3619 3620 /** 3621 * Base class for implementing an input pipeline stage that supports 3622 * asynchronous and out-of-order processing of input events. 3623 * <p> 3624 * In addition to what a normal input stage can do, an asynchronous 3625 * input stage may also defer an input event that has been delivered to it 3626 * and finish or forward it later. 3627 * </p> 3628 */ 3629 abstract class AsyncInputStage extends InputStage { 3630 private final String mTraceCounter; 3631 3632 private QueuedInputEvent mQueueHead; 3633 private QueuedInputEvent mQueueTail; 3634 private int mQueueLength; 3635 3636 protected static final int DEFER = 3; 3637 3638 /** 3639 * Creates an asynchronous input stage. 3640 * @param next The next stage to which events should be forwarded. 3641 * @param traceCounter The name of a counter to record the size of 3642 * the queue of pending events. 3643 */ 3644 public AsyncInputStage(InputStage next, String traceCounter) { 3645 super(next); 3646 mTraceCounter = traceCounter; 3647 } 3648 3649 /** 3650 * Marks the event as deferred, which is to say that it will be handled 3651 * asynchronously. The caller is responsible for calling {@link #forward} 3652 * or {@link #finish} later when it is done handling the event. 3653 */ 3654 protected void defer(QueuedInputEvent q) { 3655 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3656 enqueue(q); 3657 } 3658 3659 @Override 3660 protected void forward(QueuedInputEvent q) { 3661 // Clear the deferred flag. 3662 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3663 3664 // Fast path if the queue is empty. 3665 QueuedInputEvent curr = mQueueHead; 3666 if (curr == null) { 3667 super.forward(q); 3668 return; 3669 } 3670 3671 // Determine whether the event must be serialized behind any others 3672 // before it can be delivered to the next stage. This is done because 3673 // deferred events might be handled out of order by the stage. 3674 final int deviceId = q.mEvent.getDeviceId(); 3675 QueuedInputEvent prev = null; 3676 boolean blocked = false; 3677 while (curr != null && curr != q) { 3678 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3679 blocked = true; 3680 } 3681 prev = curr; 3682 curr = curr.mNext; 3683 } 3684 3685 // If the event is blocked, then leave it in the queue to be delivered later. 3686 // Note that the event might not yet be in the queue if it was not previously 3687 // deferred so we will enqueue it if needed. 3688 if (blocked) { 3689 if (curr == null) { 3690 enqueue(q); 3691 } 3692 return; 3693 } 3694 3695 // The event is not blocked. Deliver it immediately. 3696 if (curr != null) { 3697 curr = curr.mNext; 3698 dequeue(q, prev); 3699 } 3700 super.forward(q); 3701 3702 // Dequeuing this event may have unblocked successors. Deliver them. 3703 while (curr != null) { 3704 if (deviceId == curr.mEvent.getDeviceId()) { 3705 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3706 break; 3707 } 3708 QueuedInputEvent next = curr.mNext; 3709 dequeue(curr, prev); 3710 super.forward(curr); 3711 curr = next; 3712 } else { 3713 prev = curr; 3714 curr = curr.mNext; 3715 } 3716 } 3717 } 3718 3719 @Override 3720 protected void apply(QueuedInputEvent q, int result) { 3721 if (result == DEFER) { 3722 defer(q); 3723 } else { 3724 super.apply(q, result); 3725 } 3726 } 3727 3728 private void enqueue(QueuedInputEvent q) { 3729 if (mQueueTail == null) { 3730 mQueueHead = q; 3731 mQueueTail = q; 3732 } else { 3733 mQueueTail.mNext = q; 3734 mQueueTail = q; 3735 } 3736 3737 mQueueLength += 1; 3738 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3739 } 3740 3741 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3742 if (prev == null) { 3743 mQueueHead = q.mNext; 3744 } else { 3745 prev.mNext = q.mNext; 3746 } 3747 if (mQueueTail == q) { 3748 mQueueTail = prev; 3749 } 3750 q.mNext = null; 3751 3752 mQueueLength -= 1; 3753 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3754 } 3755 3756 @Override 3757 void dump(String prefix, PrintWriter writer) { 3758 writer.print(prefix); 3759 writer.print(getClass().getName()); 3760 writer.print(": mQueueLength="); 3761 writer.println(mQueueLength); 3762 3763 super.dump(prefix, writer); 3764 } 3765 } 3766 3767 /** 3768 * Delivers pre-ime input events to a native activity. 3769 * Does not support pointer events. 3770 */ 3771 final class NativePreImeInputStage extends AsyncInputStage 3772 implements InputQueue.FinishedInputEventCallback { 3773 public NativePreImeInputStage(InputStage next, String traceCounter) { 3774 super(next, traceCounter); 3775 } 3776 3777 @Override 3778 protected int onProcess(QueuedInputEvent q) { 3779 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3780 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3781 return DEFER; 3782 } 3783 return FORWARD; 3784 } 3785 3786 @Override 3787 public void onFinishedInputEvent(Object token, boolean handled) { 3788 QueuedInputEvent q = (QueuedInputEvent)token; 3789 if (handled) { 3790 finish(q, true); 3791 return; 3792 } 3793 forward(q); 3794 } 3795 } 3796 3797 /** 3798 * Delivers pre-ime input events to the view hierarchy. 3799 * Does not support pointer events. 3800 */ 3801 final class ViewPreImeInputStage extends InputStage { 3802 public ViewPreImeInputStage(InputStage next) { 3803 super(next); 3804 } 3805 3806 @Override 3807 protected int onProcess(QueuedInputEvent q) { 3808 if (q.mEvent instanceof KeyEvent) { 3809 return processKeyEvent(q); 3810 } 3811 return FORWARD; 3812 } 3813 3814 private int processKeyEvent(QueuedInputEvent q) { 3815 final KeyEvent event = (KeyEvent)q.mEvent; 3816 if (mView.dispatchKeyEventPreIme(event)) { 3817 return FINISH_HANDLED; 3818 } 3819 return FORWARD; 3820 } 3821 } 3822 3823 /** 3824 * Delivers input events to the ime. 3825 * Does not support pointer events. 3826 */ 3827 final class ImeInputStage extends AsyncInputStage 3828 implements InputMethodManager.FinishedInputEventCallback { 3829 public ImeInputStage(InputStage next, String traceCounter) { 3830 super(next, traceCounter); 3831 } 3832 3833 @Override 3834 protected int onProcess(QueuedInputEvent q) { 3835 if (mLastWasImTarget && !isInLocalFocusMode()) { 3836 InputMethodManager imm = InputMethodManager.peekInstance(); 3837 if (imm != null) { 3838 final InputEvent event = q.mEvent; 3839 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3840 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3841 if (result == InputMethodManager.DISPATCH_HANDLED) { 3842 return FINISH_HANDLED; 3843 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3844 // The IME could not handle it, so skip along to the next InputStage 3845 return FORWARD; 3846 } else { 3847 return DEFER; // callback will be invoked later 3848 } 3849 } 3850 } 3851 return FORWARD; 3852 } 3853 3854 @Override 3855 public void onFinishedInputEvent(Object token, boolean handled) { 3856 QueuedInputEvent q = (QueuedInputEvent)token; 3857 if (handled) { 3858 finish(q, true); 3859 return; 3860 } 3861 forward(q); 3862 } 3863 } 3864 3865 /** 3866 * Performs early processing of post-ime input events. 3867 */ 3868 final class EarlyPostImeInputStage extends InputStage { 3869 public EarlyPostImeInputStage(InputStage next) { 3870 super(next); 3871 } 3872 3873 @Override 3874 protected int onProcess(QueuedInputEvent q) { 3875 if (q.mEvent instanceof KeyEvent) { 3876 return processKeyEvent(q); 3877 } else { 3878 final int source = q.mEvent.getSource(); 3879 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3880 return processPointerEvent(q); 3881 } 3882 } 3883 return FORWARD; 3884 } 3885 3886 private int processKeyEvent(QueuedInputEvent q) { 3887 final KeyEvent event = (KeyEvent)q.mEvent; 3888 3889 // If the key's purpose is to exit touch mode then we consume it 3890 // and consider it handled. 3891 if (checkForLeavingTouchModeAndConsume(event)) { 3892 return FINISH_HANDLED; 3893 } 3894 3895 // Make sure the fallback event policy sees all keys that will be 3896 // delivered to the view hierarchy. 3897 mFallbackEventHandler.preDispatchKeyEvent(event); 3898 return FORWARD; 3899 } 3900 3901 private int processPointerEvent(QueuedInputEvent q) { 3902 final MotionEvent event = (MotionEvent)q.mEvent; 3903 3904 // Translate the pointer event for compatibility, if needed. 3905 if (mTranslator != null) { 3906 mTranslator.translateEventInScreenToAppWindow(event); 3907 } 3908 3909 // Enter touch mode on down or scroll. 3910 final int action = event.getAction(); 3911 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3912 ensureTouchMode(true); 3913 } 3914 3915 // Offset the scroll position. 3916 if (mCurScrollY != 0) { 3917 event.offsetLocation(0, mCurScrollY); 3918 } 3919 3920 // Remember the touch position for possible drag-initiation. 3921 if (event.isTouchEvent()) { 3922 mLastTouchPoint.x = event.getRawX(); 3923 mLastTouchPoint.y = event.getRawY(); 3924 } 3925 return FORWARD; 3926 } 3927 } 3928 3929 /** 3930 * Delivers post-ime input events to a native activity. 3931 */ 3932 final class NativePostImeInputStage extends AsyncInputStage 3933 implements InputQueue.FinishedInputEventCallback { 3934 public NativePostImeInputStage(InputStage next, String traceCounter) { 3935 super(next, traceCounter); 3936 } 3937 3938 @Override 3939 protected int onProcess(QueuedInputEvent q) { 3940 if (mInputQueue != null) { 3941 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3942 return DEFER; 3943 } 3944 return FORWARD; 3945 } 3946 3947 @Override 3948 public void onFinishedInputEvent(Object token, boolean handled) { 3949 QueuedInputEvent q = (QueuedInputEvent)token; 3950 if (handled) { 3951 finish(q, true); 3952 return; 3953 } 3954 forward(q); 3955 } 3956 } 3957 3958 /** 3959 * Delivers post-ime input events to the view hierarchy. 3960 */ 3961 final class ViewPostImeInputStage extends InputStage { 3962 public ViewPostImeInputStage(InputStage next) { 3963 super(next); 3964 } 3965 3966 @Override 3967 protected int onProcess(QueuedInputEvent q) { 3968 if (q.mEvent instanceof KeyEvent) { 3969 return processKeyEvent(q); 3970 } else { 3971 // If delivering a new non-key event, make sure the window is 3972 // now allowed to start updating. 3973 handleDispatchWindowAnimationStopped(); 3974 final int source = q.mEvent.getSource(); 3975 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3976 return processPointerEvent(q); 3977 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3978 return processTrackballEvent(q); 3979 } else { 3980 return processGenericMotionEvent(q); 3981 } 3982 } 3983 } 3984 3985 @Override 3986 protected void onDeliverToNext(QueuedInputEvent q) { 3987 if (mUnbufferedInputDispatch 3988 && q.mEvent instanceof MotionEvent 3989 && ((MotionEvent)q.mEvent).isTouchEvent() 3990 && isTerminalInputEvent(q.mEvent)) { 3991 mUnbufferedInputDispatch = false; 3992 scheduleConsumeBatchedInput(); 3993 } 3994 super.onDeliverToNext(q); 3995 } 3996 3997 private int processKeyEvent(QueuedInputEvent q) { 3998 final KeyEvent event = (KeyEvent)q.mEvent; 3999 4000 if (event.getAction() != KeyEvent.ACTION_UP) { 4001 // If delivering a new key event, make sure the window is 4002 // now allowed to start updating. 4003 handleDispatchWindowAnimationStopped(); 4004 } 4005 4006 // Deliver the key to the view hierarchy. 4007 if (mView.dispatchKeyEvent(event)) { 4008 return FINISH_HANDLED; 4009 } 4010 4011 if (shouldDropInputEvent(q)) { 4012 return FINISH_NOT_HANDLED; 4013 } 4014 4015 // If the Control modifier is held, try to interpret the key as a shortcut. 4016 if (event.getAction() == KeyEvent.ACTION_DOWN 4017 && event.isCtrlPressed() 4018 && event.getRepeatCount() == 0 4019 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4020 if (mView.dispatchKeyShortcutEvent(event)) { 4021 return FINISH_HANDLED; 4022 } 4023 if (shouldDropInputEvent(q)) { 4024 return FINISH_NOT_HANDLED; 4025 } 4026 } 4027 4028 // Apply the fallback event policy. 4029 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4030 return FINISH_HANDLED; 4031 } 4032 if (shouldDropInputEvent(q)) { 4033 return FINISH_NOT_HANDLED; 4034 } 4035 4036 // Handle automatic focus changes. 4037 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4038 int direction = 0; 4039 switch (event.getKeyCode()) { 4040 case KeyEvent.KEYCODE_DPAD_LEFT: 4041 if (event.hasNoModifiers()) { 4042 direction = View.FOCUS_LEFT; 4043 } 4044 break; 4045 case KeyEvent.KEYCODE_DPAD_RIGHT: 4046 if (event.hasNoModifiers()) { 4047 direction = View.FOCUS_RIGHT; 4048 } 4049 break; 4050 case KeyEvent.KEYCODE_DPAD_UP: 4051 if (event.hasNoModifiers()) { 4052 direction = View.FOCUS_UP; 4053 } 4054 break; 4055 case KeyEvent.KEYCODE_DPAD_DOWN: 4056 if (event.hasNoModifiers()) { 4057 direction = View.FOCUS_DOWN; 4058 } 4059 break; 4060 case KeyEvent.KEYCODE_TAB: 4061 if (event.hasNoModifiers()) { 4062 direction = View.FOCUS_FORWARD; 4063 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4064 direction = View.FOCUS_BACKWARD; 4065 } 4066 break; 4067 } 4068 if (direction != 0) { 4069 View focused = mView.findFocus(); 4070 if (focused != null) { 4071 View v = focused.focusSearch(direction); 4072 if (v != null && v != focused) { 4073 // do the math the get the interesting rect 4074 // of previous focused into the coord system of 4075 // newly focused view 4076 focused.getFocusedRect(mTempRect); 4077 if (mView instanceof ViewGroup) { 4078 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4079 focused, mTempRect); 4080 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4081 v, mTempRect); 4082 } 4083 if (v.requestFocus(direction, mTempRect)) { 4084 playSoundEffect(SoundEffectConstants 4085 .getContantForFocusDirection(direction)); 4086 return FINISH_HANDLED; 4087 } 4088 } 4089 4090 // Give the focused view a last chance to handle the dpad key. 4091 if (mView.dispatchUnhandledMove(focused, direction)) { 4092 return FINISH_HANDLED; 4093 } 4094 } else { 4095 // find the best view to give focus to in this non-touch-mode with no-focus 4096 View v = focusSearch(null, direction); 4097 if (v != null && v.requestFocus(direction)) { 4098 return FINISH_HANDLED; 4099 } 4100 } 4101 } 4102 } 4103 return FORWARD; 4104 } 4105 4106 private int processPointerEvent(QueuedInputEvent q) { 4107 final MotionEvent event = (MotionEvent)q.mEvent; 4108 4109 mAttachInfo.mUnbufferedDispatchRequested = false; 4110 boolean handled = mView.dispatchPointerEvent(event); 4111 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4112 mUnbufferedInputDispatch = true; 4113 if (mConsumeBatchedInputScheduled) { 4114 scheduleConsumeBatchedInputImmediately(); 4115 } 4116 } 4117 return handled ? FINISH_HANDLED : FORWARD; 4118 } 4119 4120 private int processTrackballEvent(QueuedInputEvent q) { 4121 final MotionEvent event = (MotionEvent)q.mEvent; 4122 4123 if (mView.dispatchTrackballEvent(event)) { 4124 return FINISH_HANDLED; 4125 } 4126 return FORWARD; 4127 } 4128 4129 private int processGenericMotionEvent(QueuedInputEvent q) { 4130 final MotionEvent event = (MotionEvent)q.mEvent; 4131 4132 // Deliver the event to the view. 4133 if (mView.dispatchGenericMotionEvent(event)) { 4134 return FINISH_HANDLED; 4135 } 4136 return FORWARD; 4137 } 4138 } 4139 4140 /** 4141 * Performs synthesis of new input events from unhandled input events. 4142 */ 4143 final class SyntheticInputStage extends InputStage { 4144 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4145 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4146 private final SyntheticTouchNavigationHandler mTouchNavigation = 4147 new SyntheticTouchNavigationHandler(); 4148 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4149 4150 public SyntheticInputStage() { 4151 super(null); 4152 } 4153 4154 @Override 4155 protected int onProcess(QueuedInputEvent q) { 4156 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4157 if (q.mEvent instanceof MotionEvent) { 4158 final MotionEvent event = (MotionEvent)q.mEvent; 4159 final int source = event.getSource(); 4160 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4161 mTrackball.process(event); 4162 return FINISH_HANDLED; 4163 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4164 mJoystick.process(event); 4165 return FINISH_HANDLED; 4166 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4167 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4168 mTouchNavigation.process(event); 4169 return FINISH_HANDLED; 4170 } 4171 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4172 mKeyboard.process((KeyEvent)q.mEvent); 4173 return FINISH_HANDLED; 4174 } 4175 4176 return FORWARD; 4177 } 4178 4179 @Override 4180 protected void onDeliverToNext(QueuedInputEvent q) { 4181 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4182 // Cancel related synthetic events if any prior stage has handled the event. 4183 if (q.mEvent instanceof MotionEvent) { 4184 final MotionEvent event = (MotionEvent)q.mEvent; 4185 final int source = event.getSource(); 4186 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4187 mTrackball.cancel(event); 4188 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4189 mJoystick.cancel(event); 4190 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4191 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4192 mTouchNavigation.cancel(event); 4193 } 4194 } 4195 } 4196 super.onDeliverToNext(q); 4197 } 4198 } 4199 4200 /** 4201 * Creates dpad events from unhandled trackball movements. 4202 */ 4203 final class SyntheticTrackballHandler { 4204 private final TrackballAxis mX = new TrackballAxis(); 4205 private final TrackballAxis mY = new TrackballAxis(); 4206 private long mLastTime; 4207 4208 public void process(MotionEvent event) { 4209 // Translate the trackball event into DPAD keys and try to deliver those. 4210 long curTime = SystemClock.uptimeMillis(); 4211 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4212 // It has been too long since the last movement, 4213 // so restart at the beginning. 4214 mX.reset(0); 4215 mY.reset(0); 4216 mLastTime = curTime; 4217 } 4218 4219 final int action = event.getAction(); 4220 final int metaState = event.getMetaState(); 4221 switch (action) { 4222 case MotionEvent.ACTION_DOWN: 4223 mX.reset(2); 4224 mY.reset(2); 4225 enqueueInputEvent(new KeyEvent(curTime, curTime, 4226 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4227 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4228 InputDevice.SOURCE_KEYBOARD)); 4229 break; 4230 case MotionEvent.ACTION_UP: 4231 mX.reset(2); 4232 mY.reset(2); 4233 enqueueInputEvent(new KeyEvent(curTime, curTime, 4234 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4235 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4236 InputDevice.SOURCE_KEYBOARD)); 4237 break; 4238 } 4239 4240 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4241 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4242 + " move=" + event.getX() 4243 + " / Y=" + mY.position + " step=" 4244 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4245 + " move=" + event.getY()); 4246 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4247 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4248 4249 // Generate DPAD events based on the trackball movement. 4250 // We pick the axis that has moved the most as the direction of 4251 // the DPAD. When we generate DPAD events for one axis, then the 4252 // other axis is reset -- we don't want to perform DPAD jumps due 4253 // to slight movements in the trackball when making major movements 4254 // along the other axis. 4255 int keycode = 0; 4256 int movement = 0; 4257 float accel = 1; 4258 if (xOff > yOff) { 4259 movement = mX.generate(); 4260 if (movement != 0) { 4261 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4262 : KeyEvent.KEYCODE_DPAD_LEFT; 4263 accel = mX.acceleration; 4264 mY.reset(2); 4265 } 4266 } else if (yOff > 0) { 4267 movement = mY.generate(); 4268 if (movement != 0) { 4269 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4270 : KeyEvent.KEYCODE_DPAD_UP; 4271 accel = mY.acceleration; 4272 mX.reset(2); 4273 } 4274 } 4275 4276 if (keycode != 0) { 4277 if (movement < 0) movement = -movement; 4278 int accelMovement = (int)(movement * accel); 4279 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4280 + " accelMovement=" + accelMovement 4281 + " accel=" + accel); 4282 if (accelMovement > movement) { 4283 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4284 + keycode); 4285 movement--; 4286 int repeatCount = accelMovement - movement; 4287 enqueueInputEvent(new KeyEvent(curTime, curTime, 4288 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4289 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4290 InputDevice.SOURCE_KEYBOARD)); 4291 } 4292 while (movement > 0) { 4293 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4294 + keycode); 4295 movement--; 4296 curTime = SystemClock.uptimeMillis(); 4297 enqueueInputEvent(new KeyEvent(curTime, curTime, 4298 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4299 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4300 InputDevice.SOURCE_KEYBOARD)); 4301 enqueueInputEvent(new KeyEvent(curTime, curTime, 4302 KeyEvent.ACTION_UP, keycode, 0, metaState, 4303 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4304 InputDevice.SOURCE_KEYBOARD)); 4305 } 4306 mLastTime = curTime; 4307 } 4308 } 4309 4310 public void cancel(MotionEvent event) { 4311 mLastTime = Integer.MIN_VALUE; 4312 4313 // If we reach this, we consumed a trackball event. 4314 // Because we will not translate the trackball event into a key event, 4315 // touch mode will not exit, so we exit touch mode here. 4316 if (mView != null && mAdded) { 4317 ensureTouchMode(false); 4318 } 4319 } 4320 } 4321 4322 /** 4323 * Maintains state information for a single trackball axis, generating 4324 * discrete (DPAD) movements based on raw trackball motion. 4325 */ 4326 static final class TrackballAxis { 4327 /** 4328 * The maximum amount of acceleration we will apply. 4329 */ 4330 static final float MAX_ACCELERATION = 20; 4331 4332 /** 4333 * The maximum amount of time (in milliseconds) between events in order 4334 * for us to consider the user to be doing fast trackball movements, 4335 * and thus apply an acceleration. 4336 */ 4337 static final long FAST_MOVE_TIME = 150; 4338 4339 /** 4340 * Scaling factor to the time (in milliseconds) between events to how 4341 * much to multiple/divide the current acceleration. When movement 4342 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4343 * FAST_MOVE_TIME it divides it. 4344 */ 4345 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4346 4347 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4348 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4349 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4350 4351 float position; 4352 float acceleration = 1; 4353 long lastMoveTime = 0; 4354 int step; 4355 int dir; 4356 int nonAccelMovement; 4357 4358 void reset(int _step) { 4359 position = 0; 4360 acceleration = 1; 4361 lastMoveTime = 0; 4362 step = _step; 4363 dir = 0; 4364 } 4365 4366 /** 4367 * Add trackball movement into the state. If the direction of movement 4368 * has been reversed, the state is reset before adding the 4369 * movement (so that you don't have to compensate for any previously 4370 * collected movement before see the result of the movement in the 4371 * new direction). 4372 * 4373 * @return Returns the absolute value of the amount of movement 4374 * collected so far. 4375 */ 4376 float collect(float off, long time, String axis) { 4377 long normTime; 4378 if (off > 0) { 4379 normTime = (long)(off * FAST_MOVE_TIME); 4380 if (dir < 0) { 4381 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4382 position = 0; 4383 step = 0; 4384 acceleration = 1; 4385 lastMoveTime = 0; 4386 } 4387 dir = 1; 4388 } else if (off < 0) { 4389 normTime = (long)((-off) * FAST_MOVE_TIME); 4390 if (dir > 0) { 4391 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4392 position = 0; 4393 step = 0; 4394 acceleration = 1; 4395 lastMoveTime = 0; 4396 } 4397 dir = -1; 4398 } else { 4399 normTime = 0; 4400 } 4401 4402 // The number of milliseconds between each movement that is 4403 // considered "normal" and will not result in any acceleration 4404 // or deceleration, scaled by the offset we have here. 4405 if (normTime > 0) { 4406 long delta = time - lastMoveTime; 4407 lastMoveTime = time; 4408 float acc = acceleration; 4409 if (delta < normTime) { 4410 // The user is scrolling rapidly, so increase acceleration. 4411 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4412 if (scale > 1) acc *= scale; 4413 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4414 + off + " normTime=" + normTime + " delta=" + delta 4415 + " scale=" + scale + " acc=" + acc); 4416 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4417 } else { 4418 // The user is scrolling slowly, so decrease acceleration. 4419 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4420 if (scale > 1) acc /= scale; 4421 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4422 + off + " normTime=" + normTime + " delta=" + delta 4423 + " scale=" + scale + " acc=" + acc); 4424 acceleration = acc > 1 ? acc : 1; 4425 } 4426 } 4427 position += off; 4428 return Math.abs(position); 4429 } 4430 4431 /** 4432 * Generate the number of discrete movement events appropriate for 4433 * the currently collected trackball movement. 4434 * 4435 * @return Returns the number of discrete movements, either positive 4436 * or negative, or 0 if there is not enough trackball movement yet 4437 * for a discrete movement. 4438 */ 4439 int generate() { 4440 int movement = 0; 4441 nonAccelMovement = 0; 4442 do { 4443 final int dir = position >= 0 ? 1 : -1; 4444 switch (step) { 4445 // If we are going to execute the first step, then we want 4446 // to do this as soon as possible instead of waiting for 4447 // a full movement, in order to make things look responsive. 4448 case 0: 4449 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4450 return movement; 4451 } 4452 movement += dir; 4453 nonAccelMovement += dir; 4454 step = 1; 4455 break; 4456 // If we have generated the first movement, then we need 4457 // to wait for the second complete trackball motion before 4458 // generating the second discrete movement. 4459 case 1: 4460 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4461 return movement; 4462 } 4463 movement += dir; 4464 nonAccelMovement += dir; 4465 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4466 step = 2; 4467 break; 4468 // After the first two, we generate discrete movements 4469 // consistently with the trackball, applying an acceleration 4470 // if the trackball is moving quickly. This is a simple 4471 // acceleration on top of what we already compute based 4472 // on how quickly the wheel is being turned, to apply 4473 // a longer increasing acceleration to continuous movement 4474 // in one direction. 4475 default: 4476 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4477 return movement; 4478 } 4479 movement += dir; 4480 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4481 float acc = acceleration; 4482 acc *= 1.1f; 4483 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4484 break; 4485 } 4486 } while (true); 4487 } 4488 } 4489 4490 /** 4491 * Creates dpad events from unhandled joystick movements. 4492 */ 4493 final class SyntheticJoystickHandler extends Handler { 4494 private final static String TAG = "SyntheticJoystickHandler"; 4495 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4496 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4497 4498 private int mLastXDirection; 4499 private int mLastYDirection; 4500 private int mLastXKeyCode; 4501 private int mLastYKeyCode; 4502 4503 public SyntheticJoystickHandler() { 4504 super(true); 4505 } 4506 4507 @Override 4508 public void handleMessage(Message msg) { 4509 switch (msg.what) { 4510 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4511 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4512 KeyEvent oldEvent = (KeyEvent)msg.obj; 4513 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4514 SystemClock.uptimeMillis(), 4515 oldEvent.getRepeatCount() + 1); 4516 if (mAttachInfo.mHasWindowFocus) { 4517 enqueueInputEvent(e); 4518 Message m = obtainMessage(msg.what, e); 4519 m.setAsynchronous(true); 4520 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4521 } 4522 } break; 4523 } 4524 } 4525 4526 public void process(MotionEvent event) { 4527 switch(event.getActionMasked()) { 4528 case MotionEvent.ACTION_CANCEL: 4529 cancel(event); 4530 break; 4531 case MotionEvent.ACTION_MOVE: 4532 update(event, true); 4533 break; 4534 default: 4535 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4536 } 4537 } 4538 4539 private void cancel(MotionEvent event) { 4540 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4541 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4542 update(event, false); 4543 } 4544 4545 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4546 final long time = event.getEventTime(); 4547 final int metaState = event.getMetaState(); 4548 final int deviceId = event.getDeviceId(); 4549 final int source = event.getSource(); 4550 4551 int xDirection = joystickAxisValueToDirection( 4552 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4553 if (xDirection == 0) { 4554 xDirection = joystickAxisValueToDirection(event.getX()); 4555 } 4556 4557 int yDirection = joystickAxisValueToDirection( 4558 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4559 if (yDirection == 0) { 4560 yDirection = joystickAxisValueToDirection(event.getY()); 4561 } 4562 4563 if (xDirection != mLastXDirection) { 4564 if (mLastXKeyCode != 0) { 4565 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4566 enqueueInputEvent(new KeyEvent(time, time, 4567 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4568 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4569 mLastXKeyCode = 0; 4570 } 4571 4572 mLastXDirection = xDirection; 4573 4574 if (xDirection != 0 && synthesizeNewKeys) { 4575 mLastXKeyCode = xDirection > 0 4576 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4577 final KeyEvent e = new KeyEvent(time, time, 4578 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4579 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4580 enqueueInputEvent(e); 4581 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4582 m.setAsynchronous(true); 4583 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4584 } 4585 } 4586 4587 if (yDirection != mLastYDirection) { 4588 if (mLastYKeyCode != 0) { 4589 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4590 enqueueInputEvent(new KeyEvent(time, time, 4591 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4592 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4593 mLastYKeyCode = 0; 4594 } 4595 4596 mLastYDirection = yDirection; 4597 4598 if (yDirection != 0 && synthesizeNewKeys) { 4599 mLastYKeyCode = yDirection > 0 4600 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4601 final KeyEvent e = new KeyEvent(time, time, 4602 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4603 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4604 enqueueInputEvent(e); 4605 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4606 m.setAsynchronous(true); 4607 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4608 } 4609 } 4610 } 4611 4612 private int joystickAxisValueToDirection(float value) { 4613 if (value >= 0.5f) { 4614 return 1; 4615 } else if (value <= -0.5f) { 4616 return -1; 4617 } else { 4618 return 0; 4619 } 4620 } 4621 } 4622 4623 /** 4624 * Creates dpad events from unhandled touch navigation movements. 4625 */ 4626 final class SyntheticTouchNavigationHandler extends Handler { 4627 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4628 private static final boolean LOCAL_DEBUG = false; 4629 4630 // Assumed nominal width and height in millimeters of a touch navigation pad, 4631 // if no resolution information is available from the input system. 4632 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4633 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4634 4635 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4636 4637 // The nominal distance traveled to move by one unit. 4638 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4639 4640 // Minimum and maximum fling velocity in ticks per second. 4641 // The minimum velocity should be set such that we perform enough ticks per 4642 // second that the fling appears to be fluid. For example, if we set the minimum 4643 // to 2 ticks per second, then there may be up to half a second delay between the next 4644 // to last and last ticks which is noticeably discrete and jerky. This value should 4645 // probably not be set to anything less than about 4. 4646 // If fling accuracy is a problem then consider tuning the tick distance instead. 4647 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4648 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4649 4650 // Fling velocity decay factor applied after each new key is emitted. 4651 // This parameter controls the deceleration and overall duration of the fling. 4652 // The fling stops automatically when its velocity drops below the minimum 4653 // fling velocity defined above. 4654 private static final float FLING_TICK_DECAY = 0.8f; 4655 4656 /* The input device that we are tracking. */ 4657 4658 private int mCurrentDeviceId = -1; 4659 private int mCurrentSource; 4660 private boolean mCurrentDeviceSupported; 4661 4662 /* Configuration for the current input device. */ 4663 4664 // The scaled tick distance. A movement of this amount should generally translate 4665 // into a single dpad event in a given direction. 4666 private float mConfigTickDistance; 4667 4668 // The minimum and maximum scaled fling velocity. 4669 private float mConfigMinFlingVelocity; 4670 private float mConfigMaxFlingVelocity; 4671 4672 /* Tracking state. */ 4673 4674 // The velocity tracker for detecting flings. 4675 private VelocityTracker mVelocityTracker; 4676 4677 // The active pointer id, or -1 if none. 4678 private int mActivePointerId = -1; 4679 4680 // Location where tracking started. 4681 private float mStartX; 4682 private float mStartY; 4683 4684 // Most recently observed position. 4685 private float mLastX; 4686 private float mLastY; 4687 4688 // Accumulated movement delta since the last direction key was sent. 4689 private float mAccumulatedX; 4690 private float mAccumulatedY; 4691 4692 // Set to true if any movement was delivered to the app. 4693 // Implies that tap slop was exceeded. 4694 private boolean mConsumedMovement; 4695 4696 // The most recently sent key down event. 4697 // The keycode remains set until the direction changes or a fling ends 4698 // so that repeated key events may be generated as required. 4699 private long mPendingKeyDownTime; 4700 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4701 private int mPendingKeyRepeatCount; 4702 private int mPendingKeyMetaState; 4703 4704 // The current fling velocity while a fling is in progress. 4705 private boolean mFlinging; 4706 private float mFlingVelocity; 4707 4708 public SyntheticTouchNavigationHandler() { 4709 super(true); 4710 } 4711 4712 public void process(MotionEvent event) { 4713 // Update the current device information. 4714 final long time = event.getEventTime(); 4715 final int deviceId = event.getDeviceId(); 4716 final int source = event.getSource(); 4717 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4718 finishKeys(time); 4719 finishTracking(time); 4720 mCurrentDeviceId = deviceId; 4721 mCurrentSource = source; 4722 mCurrentDeviceSupported = false; 4723 InputDevice device = event.getDevice(); 4724 if (device != null) { 4725 // In order to support an input device, we must know certain 4726 // characteristics about it, such as its size and resolution. 4727 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4728 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4729 if (xRange != null && yRange != null) { 4730 mCurrentDeviceSupported = true; 4731 4732 // Infer the resolution if it not actually known. 4733 float xRes = xRange.getResolution(); 4734 if (xRes <= 0) { 4735 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4736 } 4737 float yRes = yRange.getResolution(); 4738 if (yRes <= 0) { 4739 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4740 } 4741 float nominalRes = (xRes + yRes) * 0.5f; 4742 4743 // Precompute all of the configuration thresholds we will need. 4744 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4745 mConfigMinFlingVelocity = 4746 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4747 mConfigMaxFlingVelocity = 4748 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4749 4750 if (LOCAL_DEBUG) { 4751 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4752 + " (" + Integer.toHexString(mCurrentSource) + "): " 4753 + ", mConfigTickDistance=" + mConfigTickDistance 4754 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4755 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4756 } 4757 } 4758 } 4759 } 4760 if (!mCurrentDeviceSupported) { 4761 return; 4762 } 4763 4764 // Handle the event. 4765 final int action = event.getActionMasked(); 4766 switch (action) { 4767 case MotionEvent.ACTION_DOWN: { 4768 boolean caughtFling = mFlinging; 4769 finishKeys(time); 4770 finishTracking(time); 4771 mActivePointerId = event.getPointerId(0); 4772 mVelocityTracker = VelocityTracker.obtain(); 4773 mVelocityTracker.addMovement(event); 4774 mStartX = event.getX(); 4775 mStartY = event.getY(); 4776 mLastX = mStartX; 4777 mLastY = mStartY; 4778 mAccumulatedX = 0; 4779 mAccumulatedY = 0; 4780 4781 // If we caught a fling, then pretend that the tap slop has already 4782 // been exceeded to suppress taps whose only purpose is to stop the fling. 4783 mConsumedMovement = caughtFling; 4784 break; 4785 } 4786 4787 case MotionEvent.ACTION_MOVE: 4788 case MotionEvent.ACTION_UP: { 4789 if (mActivePointerId < 0) { 4790 break; 4791 } 4792 final int index = event.findPointerIndex(mActivePointerId); 4793 if (index < 0) { 4794 finishKeys(time); 4795 finishTracking(time); 4796 break; 4797 } 4798 4799 mVelocityTracker.addMovement(event); 4800 final float x = event.getX(index); 4801 final float y = event.getY(index); 4802 mAccumulatedX += x - mLastX; 4803 mAccumulatedY += y - mLastY; 4804 mLastX = x; 4805 mLastY = y; 4806 4807 // Consume any accumulated movement so far. 4808 final int metaState = event.getMetaState(); 4809 consumeAccumulatedMovement(time, metaState); 4810 4811 // Detect taps and flings. 4812 if (action == MotionEvent.ACTION_UP) { 4813 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4814 // It might be a fling. 4815 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4816 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4817 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4818 if (!startFling(time, vx, vy)) { 4819 finishKeys(time); 4820 } 4821 } 4822 finishTracking(time); 4823 } 4824 break; 4825 } 4826 4827 case MotionEvent.ACTION_CANCEL: { 4828 finishKeys(time); 4829 finishTracking(time); 4830 break; 4831 } 4832 } 4833 } 4834 4835 public void cancel(MotionEvent event) { 4836 if (mCurrentDeviceId == event.getDeviceId() 4837 && mCurrentSource == event.getSource()) { 4838 final long time = event.getEventTime(); 4839 finishKeys(time); 4840 finishTracking(time); 4841 } 4842 } 4843 4844 private void finishKeys(long time) { 4845 cancelFling(); 4846 sendKeyUp(time); 4847 } 4848 4849 private void finishTracking(long time) { 4850 if (mActivePointerId >= 0) { 4851 mActivePointerId = -1; 4852 mVelocityTracker.recycle(); 4853 mVelocityTracker = null; 4854 } 4855 } 4856 4857 private void consumeAccumulatedMovement(long time, int metaState) { 4858 final float absX = Math.abs(mAccumulatedX); 4859 final float absY = Math.abs(mAccumulatedY); 4860 if (absX >= absY) { 4861 if (absX >= mConfigTickDistance) { 4862 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4863 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4864 mAccumulatedY = 0; 4865 mConsumedMovement = true; 4866 } 4867 } else { 4868 if (absY >= mConfigTickDistance) { 4869 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4870 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4871 mAccumulatedX = 0; 4872 mConsumedMovement = true; 4873 } 4874 } 4875 } 4876 4877 private float consumeAccumulatedMovement(long time, int metaState, 4878 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4879 while (accumulator <= -mConfigTickDistance) { 4880 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4881 accumulator += mConfigTickDistance; 4882 } 4883 while (accumulator >= mConfigTickDistance) { 4884 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4885 accumulator -= mConfigTickDistance; 4886 } 4887 return accumulator; 4888 } 4889 4890 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4891 if (mPendingKeyCode != keyCode) { 4892 sendKeyUp(time); 4893 mPendingKeyDownTime = time; 4894 mPendingKeyCode = keyCode; 4895 mPendingKeyRepeatCount = 0; 4896 } else { 4897 mPendingKeyRepeatCount += 1; 4898 } 4899 mPendingKeyMetaState = metaState; 4900 4901 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4902 // but it doesn't quite make sense when simulating the events in this way. 4903 if (LOCAL_DEBUG) { 4904 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4905 + ", repeatCount=" + mPendingKeyRepeatCount 4906 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4907 } 4908 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4909 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4910 mPendingKeyMetaState, mCurrentDeviceId, 4911 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4912 } 4913 4914 private void sendKeyUp(long time) { 4915 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4916 if (LOCAL_DEBUG) { 4917 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4918 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4919 } 4920 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4921 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4922 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4923 mCurrentSource)); 4924 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4925 } 4926 } 4927 4928 private boolean startFling(long time, float vx, float vy) { 4929 if (LOCAL_DEBUG) { 4930 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4931 + ", min=" + mConfigMinFlingVelocity); 4932 } 4933 4934 // Flings must be oriented in the same direction as the preceding movements. 4935 switch (mPendingKeyCode) { 4936 case KeyEvent.KEYCODE_DPAD_LEFT: 4937 if (-vx >= mConfigMinFlingVelocity 4938 && Math.abs(vy) < mConfigMinFlingVelocity) { 4939 mFlingVelocity = -vx; 4940 break; 4941 } 4942 return false; 4943 4944 case KeyEvent.KEYCODE_DPAD_RIGHT: 4945 if (vx >= mConfigMinFlingVelocity 4946 && Math.abs(vy) < mConfigMinFlingVelocity) { 4947 mFlingVelocity = vx; 4948 break; 4949 } 4950 return false; 4951 4952 case KeyEvent.KEYCODE_DPAD_UP: 4953 if (-vy >= mConfigMinFlingVelocity 4954 && Math.abs(vx) < mConfigMinFlingVelocity) { 4955 mFlingVelocity = -vy; 4956 break; 4957 } 4958 return false; 4959 4960 case KeyEvent.KEYCODE_DPAD_DOWN: 4961 if (vy >= mConfigMinFlingVelocity 4962 && Math.abs(vx) < mConfigMinFlingVelocity) { 4963 mFlingVelocity = vy; 4964 break; 4965 } 4966 return false; 4967 } 4968 4969 // Post the first fling event. 4970 mFlinging = postFling(time); 4971 return mFlinging; 4972 } 4973 4974 private boolean postFling(long time) { 4975 // The idea here is to estimate the time when the pointer would have 4976 // traveled one tick distance unit given the current fling velocity. 4977 // This effect creates continuity of motion. 4978 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4979 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4980 postAtTime(mFlingRunnable, time + delay); 4981 if (LOCAL_DEBUG) { 4982 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4983 + mFlingVelocity + ", delay=" + delay 4984 + ", keyCode=" + mPendingKeyCode); 4985 } 4986 return true; 4987 } 4988 return false; 4989 } 4990 4991 private void cancelFling() { 4992 if (mFlinging) { 4993 removeCallbacks(mFlingRunnable); 4994 mFlinging = false; 4995 } 4996 } 4997 4998 private final Runnable mFlingRunnable = new Runnable() { 4999 @Override 5000 public void run() { 5001 final long time = SystemClock.uptimeMillis(); 5002 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5003 mFlingVelocity *= FLING_TICK_DECAY; 5004 if (!postFling(time)) { 5005 mFlinging = false; 5006 finishKeys(time); 5007 } 5008 } 5009 }; 5010 } 5011 5012 final class SyntheticKeyboardHandler { 5013 public void process(KeyEvent event) { 5014 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5015 return; 5016 } 5017 5018 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5019 final int keyCode = event.getKeyCode(); 5020 final int metaState = event.getMetaState(); 5021 5022 // Check for fallback actions specified by the key character map. 5023 KeyCharacterMap.FallbackAction fallbackAction = 5024 kcm.getFallbackAction(keyCode, metaState); 5025 if (fallbackAction != null) { 5026 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5027 KeyEvent fallbackEvent = KeyEvent.obtain( 5028 event.getDownTime(), event.getEventTime(), 5029 event.getAction(), fallbackAction.keyCode, 5030 event.getRepeatCount(), fallbackAction.metaState, 5031 event.getDeviceId(), event.getScanCode(), 5032 flags, event.getSource(), null); 5033 fallbackAction.recycle(); 5034 enqueueInputEvent(fallbackEvent); 5035 } 5036 } 5037 } 5038 5039 /** 5040 * Returns true if the key is used for keyboard navigation. 5041 * @param keyEvent The key event. 5042 * @return True if the key is used for keyboard navigation. 5043 */ 5044 private static boolean isNavigationKey(KeyEvent keyEvent) { 5045 switch (keyEvent.getKeyCode()) { 5046 case KeyEvent.KEYCODE_DPAD_LEFT: 5047 case KeyEvent.KEYCODE_DPAD_RIGHT: 5048 case KeyEvent.KEYCODE_DPAD_UP: 5049 case KeyEvent.KEYCODE_DPAD_DOWN: 5050 case KeyEvent.KEYCODE_DPAD_CENTER: 5051 case KeyEvent.KEYCODE_PAGE_UP: 5052 case KeyEvent.KEYCODE_PAGE_DOWN: 5053 case KeyEvent.KEYCODE_MOVE_HOME: 5054 case KeyEvent.KEYCODE_MOVE_END: 5055 case KeyEvent.KEYCODE_TAB: 5056 case KeyEvent.KEYCODE_SPACE: 5057 case KeyEvent.KEYCODE_ENTER: 5058 return true; 5059 } 5060 return false; 5061 } 5062 5063 /** 5064 * Returns true if the key is used for typing. 5065 * @param keyEvent The key event. 5066 * @return True if the key is used for typing. 5067 */ 5068 private static boolean isTypingKey(KeyEvent keyEvent) { 5069 return keyEvent.getUnicodeChar() > 0; 5070 } 5071 5072 /** 5073 * See if the key event means we should leave touch mode (and leave touch mode if so). 5074 * @param event The key event. 5075 * @return Whether this key event should be consumed (meaning the act of 5076 * leaving touch mode alone is considered the event). 5077 */ 5078 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5079 // Only relevant in touch mode. 5080 if (!mAttachInfo.mInTouchMode) { 5081 return false; 5082 } 5083 5084 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5085 final int action = event.getAction(); 5086 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5087 return false; 5088 } 5089 5090 // Don't leave touch mode if the IME told us not to. 5091 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5092 return false; 5093 } 5094 5095 // If the key can be used for keyboard navigation then leave touch mode 5096 // and select a focused view if needed (in ensureTouchMode). 5097 // When a new focused view is selected, we consume the navigation key because 5098 // navigation doesn't make much sense unless a view already has focus so 5099 // the key's purpose is to set focus. 5100 if (isNavigationKey(event)) { 5101 return ensureTouchMode(false); 5102 } 5103 5104 // If the key can be used for typing then leave touch mode 5105 // and select a focused view if needed (in ensureTouchMode). 5106 // Always allow the view to process the typing key. 5107 if (isTypingKey(event)) { 5108 ensureTouchMode(false); 5109 return false; 5110 } 5111 5112 return false; 5113 } 5114 5115 /* drag/drop */ 5116 void setLocalDragState(Object obj) { 5117 mLocalDragState = obj; 5118 } 5119 5120 private void handleDragEvent(DragEvent event) { 5121 // From the root, only drag start/end/location are dispatched. entered/exited 5122 // are determined and dispatched by the viewgroup hierarchy, who then report 5123 // that back here for ultimate reporting back to the framework. 5124 if (mView != null && mAdded) { 5125 final int what = event.mAction; 5126 5127 if (what == DragEvent.ACTION_DRAG_EXITED) { 5128 // A direct EXITED event means that the window manager knows we've just crossed 5129 // a window boundary, so the current drag target within this one must have 5130 // just been exited. Send it the usual notifications and then we're done 5131 // for now. 5132 mView.dispatchDragEvent(event); 5133 } else { 5134 // Cache the drag description when the operation starts, then fill it in 5135 // on subsequent calls as a convenience 5136 if (what == DragEvent.ACTION_DRAG_STARTED) { 5137 mCurrentDragView = null; // Start the current-recipient tracking 5138 mDragDescription = event.mClipDescription; 5139 } else { 5140 event.mClipDescription = mDragDescription; 5141 } 5142 5143 // For events with a [screen] location, translate into window coordinates 5144 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5145 mDragPoint.set(event.mX, event.mY); 5146 if (mTranslator != null) { 5147 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5148 } 5149 5150 if (mCurScrollY != 0) { 5151 mDragPoint.offset(0, mCurScrollY); 5152 } 5153 5154 event.mX = mDragPoint.x; 5155 event.mY = mDragPoint.y; 5156 } 5157 5158 // Remember who the current drag target is pre-dispatch 5159 final View prevDragView = mCurrentDragView; 5160 5161 // Now dispatch the drag/drop event 5162 boolean result = mView.dispatchDragEvent(event); 5163 5164 // If we changed apparent drag target, tell the OS about it 5165 if (prevDragView != mCurrentDragView) { 5166 try { 5167 if (prevDragView != null) { 5168 mWindowSession.dragRecipientExited(mWindow); 5169 } 5170 if (mCurrentDragView != null) { 5171 mWindowSession.dragRecipientEntered(mWindow); 5172 } 5173 } catch (RemoteException e) { 5174 Slog.e(TAG, "Unable to note drag target change"); 5175 } 5176 } 5177 5178 // Report the drop result when we're done 5179 if (what == DragEvent.ACTION_DROP) { 5180 mDragDescription = null; 5181 try { 5182 Log.i(TAG, "Reporting drop result: " + result); 5183 mWindowSession.reportDropResult(mWindow, result); 5184 } catch (RemoteException e) { 5185 Log.e(TAG, "Unable to report drop result"); 5186 } 5187 } 5188 5189 // When the drag operation ends, release any local state object 5190 // that may have been in use 5191 if (what == DragEvent.ACTION_DRAG_ENDED) { 5192 setLocalDragState(null); 5193 } 5194 } 5195 } 5196 event.recycle(); 5197 } 5198 5199 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5200 if (mSeq != args.seq) { 5201 // The sequence has changed, so we need to update our value and make 5202 // sure to do a traversal afterward so the window manager is given our 5203 // most recent data. 5204 mSeq = args.seq; 5205 mAttachInfo.mForceReportNewAttributes = true; 5206 scheduleTraversals(); 5207 } 5208 if (mView == null) return; 5209 if (args.localChanges != 0) { 5210 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5211 } 5212 5213 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5214 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5215 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5216 mView.dispatchSystemUiVisibilityChanged(visibility); 5217 } 5218 } 5219 5220 public void handleDispatchWindowAnimationStarted(int remainingFrameCount) { 5221 if (!mDrawDuringWindowsAnimating && remainingFrameCount != -1) { 5222 mRemainingFrameCount = remainingFrameCount; 5223 mWindowsAnimating = true; 5224 } 5225 } 5226 5227 public void handleDispatchWindowAnimationStopped() { 5228 if (mWindowsAnimating) { 5229 mWindowsAnimating = false; 5230 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5231 scheduleTraversals(); 5232 } 5233 } 5234 } 5235 5236 public void handleDispatchWindowShown() { 5237 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5238 } 5239 5240 public void getLastTouchPoint(Point outLocation) { 5241 outLocation.x = (int) mLastTouchPoint.x; 5242 outLocation.y = (int) mLastTouchPoint.y; 5243 } 5244 5245 public void setDragFocus(View newDragTarget) { 5246 if (mCurrentDragView != newDragTarget) { 5247 mCurrentDragView = newDragTarget; 5248 } 5249 } 5250 5251 private AudioManager getAudioManager() { 5252 if (mView == null) { 5253 throw new IllegalStateException("getAudioManager called when there is no mView"); 5254 } 5255 if (mAudioManager == null) { 5256 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5257 } 5258 return mAudioManager; 5259 } 5260 5261 public AccessibilityInteractionController getAccessibilityInteractionController() { 5262 if (mView == null) { 5263 throw new IllegalStateException("getAccessibilityInteractionController" 5264 + " called when there is no mView"); 5265 } 5266 if (mAccessibilityInteractionController == null) { 5267 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5268 } 5269 return mAccessibilityInteractionController; 5270 } 5271 5272 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5273 boolean insetsPending) throws RemoteException { 5274 5275 float appScale = mAttachInfo.mApplicationScale; 5276 boolean restore = false; 5277 if (params != null && mTranslator != null) { 5278 restore = true; 5279 params.backup(); 5280 mTranslator.translateWindowLayout(params); 5281 } 5282 if (params != null) { 5283 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5284 } 5285 mPendingConfiguration.seq = 0; 5286 //Log.d(TAG, ">>>>>> CALLING relayout"); 5287 if (params != null && mOrigWindowType != params.type) { 5288 // For compatibility with old apps, don't crash here. 5289 if (mTargetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5290 Slog.w(TAG, "Window type can not be changed after " 5291 + "the window is added; ignoring change of " + mView); 5292 params.type = mOrigWindowType; 5293 } 5294 } 5295 int relayoutResult = mWindowSession.relayout( 5296 mWindow, mSeq, params, 5297 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5298 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5299 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5300 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5301 mPendingStableInsets, mPendingOutsets, mPendingConfiguration, mSurface); 5302 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5303 if (restore) { 5304 params.restore(); 5305 } 5306 5307 if (mTranslator != null) { 5308 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5309 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5310 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5311 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5312 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5313 } 5314 return relayoutResult; 5315 } 5316 5317 /** 5318 * {@inheritDoc} 5319 */ 5320 @Override 5321 public void playSoundEffect(int effectId) { 5322 checkThread(); 5323 5324 try { 5325 final AudioManager audioManager = getAudioManager(); 5326 5327 switch (effectId) { 5328 case SoundEffectConstants.CLICK: 5329 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5330 return; 5331 case SoundEffectConstants.NAVIGATION_DOWN: 5332 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5333 return; 5334 case SoundEffectConstants.NAVIGATION_LEFT: 5335 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5336 return; 5337 case SoundEffectConstants.NAVIGATION_RIGHT: 5338 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5339 return; 5340 case SoundEffectConstants.NAVIGATION_UP: 5341 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5342 return; 5343 default: 5344 throw new IllegalArgumentException("unknown effect id " + effectId + 5345 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5346 } 5347 } catch (IllegalStateException e) { 5348 // Exception thrown by getAudioManager() when mView is null 5349 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5350 e.printStackTrace(); 5351 } 5352 } 5353 5354 /** 5355 * {@inheritDoc} 5356 */ 5357 @Override 5358 public boolean performHapticFeedback(int effectId, boolean always) { 5359 try { 5360 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5361 } catch (RemoteException e) { 5362 return false; 5363 } 5364 } 5365 5366 /** 5367 * {@inheritDoc} 5368 */ 5369 @Override 5370 public View focusSearch(View focused, int direction) { 5371 checkThread(); 5372 if (!(mView instanceof ViewGroup)) { 5373 return null; 5374 } 5375 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5376 } 5377 5378 public void debug() { 5379 mView.debug(); 5380 } 5381 5382 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5383 String innerPrefix = prefix + " "; 5384 writer.print(prefix); writer.println("ViewRoot:"); 5385 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5386 writer.print(" mRemoved="); writer.println(mRemoved); 5387 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5388 writer.println(mConsumeBatchedInputScheduled); 5389 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5390 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5391 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5392 writer.println(mPendingInputEventCount); 5393 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5394 writer.println(mProcessInputEventsScheduled); 5395 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5396 writer.print(mTraversalScheduled); 5397 if (mTraversalScheduled) { 5398 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5399 } else { 5400 writer.println(); 5401 } 5402 mFirstInputStage.dump(innerPrefix, writer); 5403 5404 mChoreographer.dump(prefix, writer); 5405 5406 writer.print(prefix); writer.println("View Hierarchy:"); 5407 dumpViewHierarchy(innerPrefix, writer, mView); 5408 } 5409 5410 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5411 writer.print(prefix); 5412 if (view == null) { 5413 writer.println("null"); 5414 return; 5415 } 5416 writer.println(view.toString()); 5417 if (!(view instanceof ViewGroup)) { 5418 return; 5419 } 5420 ViewGroup grp = (ViewGroup)view; 5421 final int N = grp.getChildCount(); 5422 if (N <= 0) { 5423 return; 5424 } 5425 prefix = prefix + " "; 5426 for (int i=0; i<N; i++) { 5427 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5428 } 5429 } 5430 5431 public void dumpGfxInfo(int[] info) { 5432 info[0] = info[1] = 0; 5433 if (mView != null) { 5434 getGfxInfo(mView, info); 5435 } 5436 } 5437 5438 private static void getGfxInfo(View view, int[] info) { 5439 RenderNode renderNode = view.mRenderNode; 5440 info[0]++; 5441 if (renderNode != null) { 5442 info[1] += renderNode.getDebugSize(); 5443 } 5444 5445 if (view instanceof ViewGroup) { 5446 ViewGroup group = (ViewGroup) view; 5447 5448 int count = group.getChildCount(); 5449 for (int i = 0; i < count; i++) { 5450 getGfxInfo(group.getChildAt(i), info); 5451 } 5452 } 5453 } 5454 5455 /** 5456 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5457 * @return True, request has been queued. False, request has been completed. 5458 */ 5459 boolean die(boolean immediate) { 5460 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5461 // done by dispatchDetachedFromWindow will cause havoc on return. 5462 if (immediate && !mIsInTraversal) { 5463 doDie(); 5464 return false; 5465 } 5466 5467 if (!mIsDrawing) { 5468 destroyHardwareRenderer(); 5469 } else { 5470 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5471 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5472 } 5473 mHandler.sendEmptyMessage(MSG_DIE); 5474 return true; 5475 } 5476 5477 void doDie() { 5478 checkThread(); 5479 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5480 synchronized (this) { 5481 if (mRemoved) { 5482 return; 5483 } 5484 mRemoved = true; 5485 if (mAdded) { 5486 dispatchDetachedFromWindow(); 5487 } 5488 5489 if (mAdded && !mFirst) { 5490 destroyHardwareRenderer(); 5491 5492 if (mView != null) { 5493 int viewVisibility = mView.getVisibility(); 5494 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5495 if (mWindowAttributesChanged || viewVisibilityChanged) { 5496 // If layout params have been changed, first give them 5497 // to the window manager to make sure it has the correct 5498 // animation info. 5499 try { 5500 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5501 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5502 mWindowSession.finishDrawing(mWindow); 5503 } 5504 } catch (RemoteException e) { 5505 } 5506 } 5507 5508 mSurface.release(); 5509 } 5510 } 5511 5512 mAdded = false; 5513 } 5514 WindowManagerGlobal.getInstance().doRemoveView(this); 5515 } 5516 5517 public void requestUpdateConfiguration(Configuration config) { 5518 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5519 mHandler.sendMessage(msg); 5520 } 5521 5522 public void loadSystemProperties() { 5523 mHandler.post(new Runnable() { 5524 @Override 5525 public void run() { 5526 // Profiling 5527 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5528 profileRendering(mAttachInfo.mHasWindowFocus); 5529 5530 // Hardware rendering 5531 if (mAttachInfo.mHardwareRenderer != null) { 5532 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5533 invalidate(); 5534 } 5535 } 5536 5537 // Layout debugging 5538 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5539 if (layout != mAttachInfo.mDebugLayout) { 5540 mAttachInfo.mDebugLayout = layout; 5541 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5542 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5543 } 5544 } 5545 } 5546 }); 5547 } 5548 5549 private void destroyHardwareRenderer() { 5550 HardwareRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5551 5552 if (hardwareRenderer != null) { 5553 if (mView != null) { 5554 hardwareRenderer.destroyHardwareResources(mView); 5555 } 5556 hardwareRenderer.destroy(); 5557 hardwareRenderer.setRequested(false); 5558 5559 mAttachInfo.mHardwareRenderer = null; 5560 mAttachInfo.mHardwareAccelerated = false; 5561 } 5562 } 5563 5564 public void dispatchFinishInputConnection(InputConnection connection) { 5565 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5566 mHandler.sendMessage(msg); 5567 } 5568 5569 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5570 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 5571 Configuration newConfig) { 5572 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5573 + " contentInsets=" + contentInsets.toShortString() 5574 + " visibleInsets=" + visibleInsets.toShortString() 5575 + " reportDraw=" + reportDraw); 5576 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5577 if (mTranslator != null) { 5578 mTranslator.translateRectInScreenToAppWindow(frame); 5579 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5580 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5581 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5582 } 5583 SomeArgs args = SomeArgs.obtain(); 5584 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5585 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5586 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5587 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5588 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5589 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5590 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5591 args.arg7 = sameProcessCall ? new Rect(outsets) : outsets; 5592 msg.obj = args; 5593 mHandler.sendMessage(msg); 5594 } 5595 5596 public void dispatchMoved(int newX, int newY) { 5597 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5598 if (mTranslator != null) { 5599 PointF point = new PointF(newX, newY); 5600 mTranslator.translatePointInScreenToAppWindow(point); 5601 newX = (int) (point.x + 0.5); 5602 newY = (int) (point.y + 0.5); 5603 } 5604 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5605 mHandler.sendMessage(msg); 5606 } 5607 5608 /** 5609 * Represents a pending input event that is waiting in a queue. 5610 * 5611 * Input events are processed in serial order by the timestamp specified by 5612 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5613 * one input event to the application at a time and waits for the application 5614 * to finish handling it before delivering the next one. 5615 * 5616 * However, because the application or IME can synthesize and inject multiple 5617 * key events at a time without going through the input dispatcher, we end up 5618 * needing a queue on the application's side. 5619 */ 5620 private static final class QueuedInputEvent { 5621 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5622 public static final int FLAG_DEFERRED = 1 << 1; 5623 public static final int FLAG_FINISHED = 1 << 2; 5624 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5625 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5626 public static final int FLAG_UNHANDLED = 1 << 5; 5627 5628 public QueuedInputEvent mNext; 5629 5630 public InputEvent mEvent; 5631 public InputEventReceiver mReceiver; 5632 public int mFlags; 5633 5634 public boolean shouldSkipIme() { 5635 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5636 return true; 5637 } 5638 return mEvent instanceof MotionEvent 5639 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5640 } 5641 5642 public boolean shouldSendToSynthesizer() { 5643 if ((mFlags & FLAG_UNHANDLED) != 0) { 5644 return true; 5645 } 5646 5647 return false; 5648 } 5649 5650 @Override 5651 public String toString() { 5652 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5653 boolean hasPrevious = false; 5654 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5655 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5656 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5657 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5658 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5659 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5660 if (!hasPrevious) { 5661 sb.append("0"); 5662 } 5663 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5664 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5665 sb.append(", mEvent=" + mEvent + "}"); 5666 return sb.toString(); 5667 } 5668 5669 private boolean flagToString(String name, int flag, 5670 boolean hasPrevious, StringBuilder sb) { 5671 if ((mFlags & flag) != 0) { 5672 if (hasPrevious) { 5673 sb.append("|"); 5674 } 5675 sb.append(name); 5676 return true; 5677 } 5678 return hasPrevious; 5679 } 5680 } 5681 5682 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5683 InputEventReceiver receiver, int flags) { 5684 QueuedInputEvent q = mQueuedInputEventPool; 5685 if (q != null) { 5686 mQueuedInputEventPoolSize -= 1; 5687 mQueuedInputEventPool = q.mNext; 5688 q.mNext = null; 5689 } else { 5690 q = new QueuedInputEvent(); 5691 } 5692 5693 q.mEvent = event; 5694 q.mReceiver = receiver; 5695 q.mFlags = flags; 5696 return q; 5697 } 5698 5699 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5700 q.mEvent = null; 5701 q.mReceiver = null; 5702 5703 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5704 mQueuedInputEventPoolSize += 1; 5705 q.mNext = mQueuedInputEventPool; 5706 mQueuedInputEventPool = q; 5707 } 5708 } 5709 5710 void enqueueInputEvent(InputEvent event) { 5711 enqueueInputEvent(event, null, 0, false); 5712 } 5713 5714 void enqueueInputEvent(InputEvent event, 5715 InputEventReceiver receiver, int flags, boolean processImmediately) { 5716 adjustInputEventForCompatibility(event); 5717 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5718 5719 // Always enqueue the input event in order, regardless of its time stamp. 5720 // We do this because the application or the IME may inject key events 5721 // in response to touch events and we want to ensure that the injected keys 5722 // are processed in the order they were received and we cannot trust that 5723 // the time stamp of injected events are monotonic. 5724 QueuedInputEvent last = mPendingInputEventTail; 5725 if (last == null) { 5726 mPendingInputEventHead = q; 5727 mPendingInputEventTail = q; 5728 } else { 5729 last.mNext = q; 5730 mPendingInputEventTail = q; 5731 } 5732 mPendingInputEventCount += 1; 5733 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5734 mPendingInputEventCount); 5735 5736 if (processImmediately) { 5737 doProcessInputEvents(); 5738 } else { 5739 scheduleProcessInputEvents(); 5740 } 5741 } 5742 5743 private void scheduleProcessInputEvents() { 5744 if (!mProcessInputEventsScheduled) { 5745 mProcessInputEventsScheduled = true; 5746 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5747 msg.setAsynchronous(true); 5748 mHandler.sendMessage(msg); 5749 } 5750 } 5751 5752 void doProcessInputEvents() { 5753 // Deliver all pending input events in the queue. 5754 while (mPendingInputEventHead != null) { 5755 QueuedInputEvent q = mPendingInputEventHead; 5756 mPendingInputEventHead = q.mNext; 5757 if (mPendingInputEventHead == null) { 5758 mPendingInputEventTail = null; 5759 } 5760 q.mNext = null; 5761 5762 mPendingInputEventCount -= 1; 5763 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5764 mPendingInputEventCount); 5765 5766 long eventTime = q.mEvent.getEventTimeNano(); 5767 long oldestEventTime = eventTime; 5768 if (q.mEvent instanceof MotionEvent) { 5769 MotionEvent me = (MotionEvent)q.mEvent; 5770 if (me.getHistorySize() > 0) { 5771 oldestEventTime = me.getHistoricalEventTimeNano(0); 5772 } 5773 } 5774 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 5775 5776 deliverInputEvent(q); 5777 } 5778 5779 // We are done processing all input events that we can process right now 5780 // so we can clear the pending flag immediately. 5781 if (mProcessInputEventsScheduled) { 5782 mProcessInputEventsScheduled = false; 5783 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5784 } 5785 } 5786 5787 private void deliverInputEvent(QueuedInputEvent q) { 5788 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5789 q.mEvent.getSequenceNumber()); 5790 if (mInputEventConsistencyVerifier != null) { 5791 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5792 } 5793 5794 InputStage stage; 5795 if (q.shouldSendToSynthesizer()) { 5796 stage = mSyntheticInputStage; 5797 } else { 5798 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5799 } 5800 5801 if (stage != null) { 5802 stage.deliver(q); 5803 } else { 5804 finishInputEvent(q); 5805 } 5806 } 5807 5808 private void finishInputEvent(QueuedInputEvent q) { 5809 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5810 q.mEvent.getSequenceNumber()); 5811 5812 if (q.mReceiver != null) { 5813 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5814 q.mReceiver.finishInputEvent(q.mEvent, handled); 5815 } else { 5816 q.mEvent.recycleIfNeededAfterDispatch(); 5817 } 5818 5819 recycleQueuedInputEvent(q); 5820 } 5821 5822 private void adjustInputEventForCompatibility(InputEvent e) { 5823 if (mTargetSdkVersion < Build.VERSION_CODES.M && e instanceof MotionEvent) { 5824 MotionEvent motion = (MotionEvent) e; 5825 final int mask = 5826 MotionEvent.BUTTON_STYLUS_PRIMARY | MotionEvent.BUTTON_STYLUS_SECONDARY; 5827 final int buttonState = motion.getButtonState(); 5828 final int compatButtonState = (buttonState & mask) >> 4; 5829 if (compatButtonState != 0) { 5830 motion.setButtonState(buttonState | compatButtonState); 5831 } 5832 } 5833 } 5834 5835 static boolean isTerminalInputEvent(InputEvent event) { 5836 if (event instanceof KeyEvent) { 5837 final KeyEvent keyEvent = (KeyEvent)event; 5838 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5839 } else { 5840 final MotionEvent motionEvent = (MotionEvent)event; 5841 final int action = motionEvent.getAction(); 5842 return action == MotionEvent.ACTION_UP 5843 || action == MotionEvent.ACTION_CANCEL 5844 || action == MotionEvent.ACTION_HOVER_EXIT; 5845 } 5846 } 5847 5848 void scheduleConsumeBatchedInput() { 5849 if (!mConsumeBatchedInputScheduled) { 5850 mConsumeBatchedInputScheduled = true; 5851 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5852 mConsumedBatchedInputRunnable, null); 5853 } 5854 } 5855 5856 void unscheduleConsumeBatchedInput() { 5857 if (mConsumeBatchedInputScheduled) { 5858 mConsumeBatchedInputScheduled = false; 5859 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5860 mConsumedBatchedInputRunnable, null); 5861 } 5862 } 5863 5864 void scheduleConsumeBatchedInputImmediately() { 5865 if (!mConsumeBatchedInputImmediatelyScheduled) { 5866 unscheduleConsumeBatchedInput(); 5867 mConsumeBatchedInputImmediatelyScheduled = true; 5868 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 5869 } 5870 } 5871 5872 void doConsumeBatchedInput(long frameTimeNanos) { 5873 if (mConsumeBatchedInputScheduled) { 5874 mConsumeBatchedInputScheduled = false; 5875 if (mInputEventReceiver != null) { 5876 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 5877 && frameTimeNanos != -1) { 5878 // If we consumed a batch here, we want to go ahead and schedule the 5879 // consumption of batched input events on the next frame. Otherwise, we would 5880 // wait until we have more input events pending and might get starved by other 5881 // things occurring in the process. If the frame time is -1, however, then 5882 // we're in a non-batching mode, so there's no need to schedule this. 5883 scheduleConsumeBatchedInput(); 5884 } 5885 } 5886 doProcessInputEvents(); 5887 } 5888 } 5889 5890 final class TraversalRunnable implements Runnable { 5891 @Override 5892 public void run() { 5893 doTraversal(); 5894 } 5895 } 5896 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5897 5898 final class WindowInputEventReceiver extends InputEventReceiver { 5899 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5900 super(inputChannel, looper); 5901 } 5902 5903 @Override 5904 public void onInputEvent(InputEvent event) { 5905 enqueueInputEvent(event, this, 0, true); 5906 } 5907 5908 @Override 5909 public void onBatchedInputEventPending() { 5910 if (mUnbufferedInputDispatch) { 5911 super.onBatchedInputEventPending(); 5912 } else { 5913 scheduleConsumeBatchedInput(); 5914 } 5915 } 5916 5917 @Override 5918 public void dispose() { 5919 unscheduleConsumeBatchedInput(); 5920 super.dispose(); 5921 } 5922 } 5923 WindowInputEventReceiver mInputEventReceiver; 5924 5925 final class ConsumeBatchedInputRunnable implements Runnable { 5926 @Override 5927 public void run() { 5928 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5929 } 5930 } 5931 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5932 new ConsumeBatchedInputRunnable(); 5933 boolean mConsumeBatchedInputScheduled; 5934 5935 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 5936 @Override 5937 public void run() { 5938 doConsumeBatchedInput(-1); 5939 } 5940 } 5941 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 5942 new ConsumeBatchedInputImmediatelyRunnable(); 5943 boolean mConsumeBatchedInputImmediatelyScheduled; 5944 5945 final class InvalidateOnAnimationRunnable implements Runnable { 5946 private boolean mPosted; 5947 private final ArrayList<View> mViews = new ArrayList<View>(); 5948 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5949 new ArrayList<AttachInfo.InvalidateInfo>(); 5950 private View[] mTempViews; 5951 private AttachInfo.InvalidateInfo[] mTempViewRects; 5952 5953 public void addView(View view) { 5954 synchronized (this) { 5955 mViews.add(view); 5956 postIfNeededLocked(); 5957 } 5958 } 5959 5960 public void addViewRect(AttachInfo.InvalidateInfo info) { 5961 synchronized (this) { 5962 mViewRects.add(info); 5963 postIfNeededLocked(); 5964 } 5965 } 5966 5967 public void removeView(View view) { 5968 synchronized (this) { 5969 mViews.remove(view); 5970 5971 for (int i = mViewRects.size(); i-- > 0; ) { 5972 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5973 if (info.target == view) { 5974 mViewRects.remove(i); 5975 info.recycle(); 5976 } 5977 } 5978 5979 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5980 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5981 mPosted = false; 5982 } 5983 } 5984 } 5985 5986 @Override 5987 public void run() { 5988 final int viewCount; 5989 final int viewRectCount; 5990 synchronized (this) { 5991 mPosted = false; 5992 5993 viewCount = mViews.size(); 5994 if (viewCount != 0) { 5995 mTempViews = mViews.toArray(mTempViews != null 5996 ? mTempViews : new View[viewCount]); 5997 mViews.clear(); 5998 } 5999 6000 viewRectCount = mViewRects.size(); 6001 if (viewRectCount != 0) { 6002 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6003 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6004 mViewRects.clear(); 6005 } 6006 } 6007 6008 for (int i = 0; i < viewCount; i++) { 6009 mTempViews[i].invalidate(); 6010 mTempViews[i] = null; 6011 } 6012 6013 for (int i = 0; i < viewRectCount; i++) { 6014 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6015 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6016 info.recycle(); 6017 } 6018 } 6019 6020 private void postIfNeededLocked() { 6021 if (!mPosted) { 6022 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6023 mPosted = true; 6024 } 6025 } 6026 } 6027 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6028 new InvalidateOnAnimationRunnable(); 6029 6030 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6031 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6032 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6033 } 6034 6035 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6036 long delayMilliseconds) { 6037 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6038 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6039 } 6040 6041 public void dispatchInvalidateOnAnimation(View view) { 6042 mInvalidateOnAnimationRunnable.addView(view); 6043 } 6044 6045 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6046 mInvalidateOnAnimationRunnable.addViewRect(info); 6047 } 6048 6049 public void cancelInvalidate(View view) { 6050 mHandler.removeMessages(MSG_INVALIDATE, view); 6051 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6052 // them to the pool 6053 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6054 mInvalidateOnAnimationRunnable.removeView(view); 6055 } 6056 6057 public void dispatchInputEvent(InputEvent event) { 6058 dispatchInputEvent(event, null); 6059 } 6060 6061 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6062 SomeArgs args = SomeArgs.obtain(); 6063 args.arg1 = event; 6064 args.arg2 = receiver; 6065 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6066 msg.setAsynchronous(true); 6067 mHandler.sendMessage(msg); 6068 } 6069 6070 public void synthesizeInputEvent(InputEvent event) { 6071 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6072 msg.setAsynchronous(true); 6073 mHandler.sendMessage(msg); 6074 } 6075 6076 public void dispatchKeyFromIme(KeyEvent event) { 6077 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6078 msg.setAsynchronous(true); 6079 mHandler.sendMessage(msg); 6080 } 6081 6082 /** 6083 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6084 * 6085 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6086 * passes in. 6087 */ 6088 public void dispatchUnhandledInputEvent(InputEvent event) { 6089 if (event instanceof MotionEvent) { 6090 event = MotionEvent.obtain((MotionEvent) event); 6091 } 6092 synthesizeInputEvent(event); 6093 } 6094 6095 public void dispatchAppVisibility(boolean visible) { 6096 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6097 msg.arg1 = visible ? 1 : 0; 6098 mHandler.sendMessage(msg); 6099 } 6100 6101 public void dispatchGetNewSurface() { 6102 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6103 mHandler.sendMessage(msg); 6104 } 6105 6106 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6107 Message msg = Message.obtain(); 6108 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6109 msg.arg1 = hasFocus ? 1 : 0; 6110 msg.arg2 = inTouchMode ? 1 : 0; 6111 mHandler.sendMessage(msg); 6112 } 6113 6114 public void dispatchWindowShown() { 6115 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6116 } 6117 6118 public void dispatchCloseSystemDialogs(String reason) { 6119 Message msg = Message.obtain(); 6120 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6121 msg.obj = reason; 6122 mHandler.sendMessage(msg); 6123 } 6124 6125 public void dispatchDragEvent(DragEvent event) { 6126 final int what; 6127 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6128 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6129 mHandler.removeMessages(what); 6130 } else { 6131 what = MSG_DISPATCH_DRAG_EVENT; 6132 } 6133 Message msg = mHandler.obtainMessage(what, event); 6134 mHandler.sendMessage(msg); 6135 } 6136 6137 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6138 int localValue, int localChanges) { 6139 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6140 args.seq = seq; 6141 args.globalVisibility = globalVisibility; 6142 args.localValue = localValue; 6143 args.localChanges = localChanges; 6144 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6145 } 6146 6147 public void dispatchWindowAnimationStarted(int remainingFrameCount) { 6148 mHandler.obtainMessage(MSG_DISPATCH_WINDOW_ANIMATION_STARTED, 6149 remainingFrameCount, 0 /* unused */).sendToTarget(); 6150 } 6151 6152 public void dispatchWindowAnimationStopped() { 6153 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_ANIMATION_STOPPED); 6154 } 6155 6156 public void dispatchCheckFocus() { 6157 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6158 // This will result in a call to checkFocus() below. 6159 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6160 } 6161 } 6162 6163 /** 6164 * Post a callback to send a 6165 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6166 * This event is send at most once every 6167 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6168 */ 6169 private void postSendWindowContentChangedCallback(View source, int changeType) { 6170 if (mSendWindowContentChangedAccessibilityEvent == null) { 6171 mSendWindowContentChangedAccessibilityEvent = 6172 new SendWindowContentChangedAccessibilityEvent(); 6173 } 6174 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6175 } 6176 6177 /** 6178 * Remove a posted callback to send a 6179 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6180 */ 6181 private void removeSendWindowContentChangedCallback() { 6182 if (mSendWindowContentChangedAccessibilityEvent != null) { 6183 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6184 } 6185 } 6186 6187 @Override 6188 public boolean showContextMenuForChild(View originalView) { 6189 return false; 6190 } 6191 6192 @Override 6193 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6194 return null; 6195 } 6196 6197 @Override 6198 public ActionMode startActionModeForChild( 6199 View originalView, ActionMode.Callback callback, int type) { 6200 return null; 6201 } 6202 6203 @Override 6204 public void createContextMenu(ContextMenu menu) { 6205 } 6206 6207 @Override 6208 public void childDrawableStateChanged(View child) { 6209 } 6210 6211 @Override 6212 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6213 if (mView == null || mStopped || mPausedForTransition) { 6214 return false; 6215 } 6216 // Intercept accessibility focus events fired by virtual nodes to keep 6217 // track of accessibility focus position in such nodes. 6218 final int eventType = event.getEventType(); 6219 switch (eventType) { 6220 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6221 final long sourceNodeId = event.getSourceNodeId(); 6222 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6223 sourceNodeId); 6224 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6225 if (source != null) { 6226 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6227 if (provider != null) { 6228 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6229 sourceNodeId); 6230 final AccessibilityNodeInfo node; 6231 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6232 node = provider.createAccessibilityNodeInfo( 6233 AccessibilityNodeProvider.HOST_VIEW_ID); 6234 } else { 6235 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6236 } 6237 setAccessibilityFocus(source, node); 6238 } 6239 } 6240 } break; 6241 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6242 final long sourceNodeId = event.getSourceNodeId(); 6243 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6244 sourceNodeId); 6245 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6246 if (source != null) { 6247 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6248 if (provider != null) { 6249 setAccessibilityFocus(null, null); 6250 } 6251 } 6252 } break; 6253 6254 6255 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6256 handleWindowContentChangedEvent(event); 6257 } break; 6258 } 6259 mAccessibilityManager.sendAccessibilityEvent(event); 6260 return true; 6261 } 6262 6263 /** 6264 * Updates the focused virtual view, when necessary, in response to a 6265 * content changed event. 6266 * <p> 6267 * This is necessary to get updated bounds after a position change. 6268 * 6269 * @param event an accessibility event of type 6270 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} 6271 */ 6272 private void handleWindowContentChangedEvent(AccessibilityEvent event) { 6273 final View focusedHost = mAccessibilityFocusedHost; 6274 if (focusedHost == null || mAccessibilityFocusedVirtualView == null) { 6275 // No virtual view focused, nothing to do here. 6276 return; 6277 } 6278 6279 final AccessibilityNodeProvider provider = focusedHost.getAccessibilityNodeProvider(); 6280 if (provider == null) { 6281 // Error state: virtual view with no provider. Clear focus. 6282 mAccessibilityFocusedHost = null; 6283 mAccessibilityFocusedVirtualView = null; 6284 focusedHost.clearAccessibilityFocusNoCallbacks(); 6285 return; 6286 } 6287 6288 // We only care about change types that may affect the bounds of the 6289 // focused virtual view. 6290 final int changes = event.getContentChangeTypes(); 6291 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) == 0 6292 && changes != AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6293 return; 6294 } 6295 6296 final long eventSourceNodeId = event.getSourceNodeId(); 6297 final int changedViewId = AccessibilityNodeInfo.getAccessibilityViewId(eventSourceNodeId); 6298 6299 // Search up the tree for subtree containment. 6300 boolean hostInSubtree = false; 6301 View root = mAccessibilityFocusedHost; 6302 while (root != null && !hostInSubtree) { 6303 if (changedViewId == root.getAccessibilityViewId()) { 6304 hostInSubtree = true; 6305 } else { 6306 final ViewParent parent = root.getParent(); 6307 if (parent instanceof View) { 6308 root = (View) parent; 6309 } else { 6310 root = null; 6311 } 6312 } 6313 } 6314 6315 // We care only about changes in subtrees containing the host view. 6316 if (!hostInSubtree) { 6317 return; 6318 } 6319 6320 final long focusedSourceNodeId = mAccessibilityFocusedVirtualView.getSourceNodeId(); 6321 int focusedChildId = AccessibilityNodeInfo.getVirtualDescendantId(focusedSourceNodeId); 6322 if (focusedChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6323 // TODO: Should we clear the focused virtual view? 6324 focusedChildId = AccessibilityNodeProvider.HOST_VIEW_ID; 6325 } 6326 6327 // Refresh the node for the focused virtual view. 6328 final Rect oldBounds = mTempRect; 6329 mAccessibilityFocusedVirtualView.getBoundsInScreen(oldBounds); 6330 mAccessibilityFocusedVirtualView = provider.createAccessibilityNodeInfo(focusedChildId); 6331 if (mAccessibilityFocusedVirtualView == null) { 6332 // Error state: The node no longer exists. Clear focus. 6333 mAccessibilityFocusedHost = null; 6334 focusedHost.clearAccessibilityFocusNoCallbacks(); 6335 6336 // This will probably fail, but try to keep the provider's internal 6337 // state consistent by clearing focus. 6338 provider.performAction(focusedChildId, 6339 AccessibilityAction.ACTION_CLEAR_ACCESSIBILITY_FOCUS.getId(), null); 6340 invalidateRectOnScreen(oldBounds); 6341 } else { 6342 // The node was refreshed, invalidate bounds if necessary. 6343 final Rect newBounds = mAccessibilityFocusedVirtualView.getBoundsInScreen(); 6344 if (!oldBounds.equals(newBounds)) { 6345 oldBounds.union(newBounds); 6346 invalidateRectOnScreen(oldBounds); 6347 } 6348 } 6349 } 6350 6351 @Override 6352 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6353 postSendWindowContentChangedCallback(source, changeType); 6354 } 6355 6356 @Override 6357 public boolean canResolveLayoutDirection() { 6358 return true; 6359 } 6360 6361 @Override 6362 public boolean isLayoutDirectionResolved() { 6363 return true; 6364 } 6365 6366 @Override 6367 public int getLayoutDirection() { 6368 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6369 } 6370 6371 @Override 6372 public boolean canResolveTextDirection() { 6373 return true; 6374 } 6375 6376 @Override 6377 public boolean isTextDirectionResolved() { 6378 return true; 6379 } 6380 6381 @Override 6382 public int getTextDirection() { 6383 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6384 } 6385 6386 @Override 6387 public boolean canResolveTextAlignment() { 6388 return true; 6389 } 6390 6391 @Override 6392 public boolean isTextAlignmentResolved() { 6393 return true; 6394 } 6395 6396 @Override 6397 public int getTextAlignment() { 6398 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6399 } 6400 6401 private View getCommonPredecessor(View first, View second) { 6402 if (mTempHashSet == null) { 6403 mTempHashSet = new HashSet<View>(); 6404 } 6405 HashSet<View> seen = mTempHashSet; 6406 seen.clear(); 6407 View firstCurrent = first; 6408 while (firstCurrent != null) { 6409 seen.add(firstCurrent); 6410 ViewParent firstCurrentParent = firstCurrent.mParent; 6411 if (firstCurrentParent instanceof View) { 6412 firstCurrent = (View) firstCurrentParent; 6413 } else { 6414 firstCurrent = null; 6415 } 6416 } 6417 View secondCurrent = second; 6418 while (secondCurrent != null) { 6419 if (seen.contains(secondCurrent)) { 6420 seen.clear(); 6421 return secondCurrent; 6422 } 6423 ViewParent secondCurrentParent = secondCurrent.mParent; 6424 if (secondCurrentParent instanceof View) { 6425 secondCurrent = (View) secondCurrentParent; 6426 } else { 6427 secondCurrent = null; 6428 } 6429 } 6430 seen.clear(); 6431 return null; 6432 } 6433 6434 void checkThread() { 6435 if (mThread != Thread.currentThread()) { 6436 throw new CalledFromWrongThreadException( 6437 "Only the original thread that created a view hierarchy can touch its views."); 6438 } 6439 } 6440 6441 @Override 6442 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6443 // ViewAncestor never intercepts touch event, so this can be a no-op 6444 } 6445 6446 @Override 6447 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6448 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6449 if (rectangle != null) { 6450 mTempRect.set(rectangle); 6451 mTempRect.offset(0, -mCurScrollY); 6452 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6453 try { 6454 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6455 } catch (RemoteException re) { 6456 /* ignore */ 6457 } 6458 } 6459 return scrolled; 6460 } 6461 6462 @Override 6463 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6464 // Do nothing. 6465 } 6466 6467 @Override 6468 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6469 return false; 6470 } 6471 6472 @Override 6473 public void onStopNestedScroll(View target) { 6474 } 6475 6476 @Override 6477 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6478 } 6479 6480 @Override 6481 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6482 int dxUnconsumed, int dyUnconsumed) { 6483 } 6484 6485 @Override 6486 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6487 } 6488 6489 @Override 6490 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6491 return false; 6492 } 6493 6494 @Override 6495 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6496 return false; 6497 } 6498 6499 @Override 6500 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6501 return false; 6502 } 6503 6504 void changeCanvasOpacity(boolean opaque) { 6505 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6506 if (mAttachInfo.mHardwareRenderer != null) { 6507 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6508 } 6509 } 6510 6511 class TakenSurfaceHolder extends BaseSurfaceHolder { 6512 @Override 6513 public boolean onAllowLockCanvas() { 6514 return mDrawingAllowed; 6515 } 6516 6517 @Override 6518 public void onRelayoutContainer() { 6519 // Not currently interesting -- from changing between fixed and layout size. 6520 } 6521 6522 @Override 6523 public void setFormat(int format) { 6524 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6525 } 6526 6527 @Override 6528 public void setType(int type) { 6529 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6530 } 6531 6532 @Override 6533 public void onUpdateSurface() { 6534 // We take care of format and type changes on our own. 6535 throw new IllegalStateException("Shouldn't be here"); 6536 } 6537 6538 @Override 6539 public boolean isCreating() { 6540 return mIsCreating; 6541 } 6542 6543 @Override 6544 public void setFixedSize(int width, int height) { 6545 throw new UnsupportedOperationException( 6546 "Currently only support sizing from layout"); 6547 } 6548 6549 @Override 6550 public void setKeepScreenOn(boolean screenOn) { 6551 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6552 } 6553 } 6554 6555 static class W extends IWindow.Stub { 6556 private final WeakReference<ViewRootImpl> mViewAncestor; 6557 private final IWindowSession mWindowSession; 6558 6559 W(ViewRootImpl viewAncestor) { 6560 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6561 mWindowSession = viewAncestor.mWindowSession; 6562 } 6563 6564 @Override 6565 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6566 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 6567 Configuration newConfig) { 6568 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6569 if (viewAncestor != null) { 6570 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6571 visibleInsets, stableInsets, outsets, reportDraw, newConfig); 6572 } 6573 } 6574 6575 @Override 6576 public void moved(int newX, int newY) { 6577 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6578 if (viewAncestor != null) { 6579 viewAncestor.dispatchMoved(newX, newY); 6580 } 6581 } 6582 6583 @Override 6584 public void dispatchAppVisibility(boolean visible) { 6585 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6586 if (viewAncestor != null) { 6587 viewAncestor.dispatchAppVisibility(visible); 6588 } 6589 } 6590 6591 @Override 6592 public void dispatchGetNewSurface() { 6593 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6594 if (viewAncestor != null) { 6595 viewAncestor.dispatchGetNewSurface(); 6596 } 6597 } 6598 6599 @Override 6600 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6601 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6602 if (viewAncestor != null) { 6603 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6604 } 6605 } 6606 6607 private static int checkCallingPermission(String permission) { 6608 try { 6609 return ActivityManagerNative.getDefault().checkPermission( 6610 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6611 } catch (RemoteException e) { 6612 return PackageManager.PERMISSION_DENIED; 6613 } 6614 } 6615 6616 @Override 6617 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6618 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6619 if (viewAncestor != null) { 6620 final View view = viewAncestor.mView; 6621 if (view != null) { 6622 if (checkCallingPermission(Manifest.permission.DUMP) != 6623 PackageManager.PERMISSION_GRANTED) { 6624 throw new SecurityException("Insufficient permissions to invoke" 6625 + " executeCommand() from pid=" + Binder.getCallingPid() 6626 + ", uid=" + Binder.getCallingUid()); 6627 } 6628 6629 OutputStream clientStream = null; 6630 try { 6631 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6632 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6633 } catch (IOException e) { 6634 e.printStackTrace(); 6635 } finally { 6636 if (clientStream != null) { 6637 try { 6638 clientStream.close(); 6639 } catch (IOException e) { 6640 e.printStackTrace(); 6641 } 6642 } 6643 } 6644 } 6645 } 6646 } 6647 6648 @Override 6649 public void closeSystemDialogs(String reason) { 6650 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6651 if (viewAncestor != null) { 6652 viewAncestor.dispatchCloseSystemDialogs(reason); 6653 } 6654 } 6655 6656 @Override 6657 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6658 boolean sync) { 6659 if (sync) { 6660 try { 6661 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6662 } catch (RemoteException e) { 6663 } 6664 } 6665 } 6666 6667 @Override 6668 public void dispatchWallpaperCommand(String action, int x, int y, 6669 int z, Bundle extras, boolean sync) { 6670 if (sync) { 6671 try { 6672 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6673 } catch (RemoteException e) { 6674 } 6675 } 6676 } 6677 6678 /* Drag/drop */ 6679 @Override 6680 public void dispatchDragEvent(DragEvent event) { 6681 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6682 if (viewAncestor != null) { 6683 viewAncestor.dispatchDragEvent(event); 6684 } 6685 } 6686 6687 @Override 6688 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6689 int localValue, int localChanges) { 6690 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6691 if (viewAncestor != null) { 6692 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6693 localValue, localChanges); 6694 } 6695 } 6696 6697 @Override 6698 public void onAnimationStarted(int remainingFrameCount) { 6699 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6700 if (viewAncestor != null) { 6701 viewAncestor.dispatchWindowAnimationStarted(remainingFrameCount); 6702 } 6703 } 6704 6705 @Override 6706 public void onAnimationStopped() { 6707 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6708 if (viewAncestor != null) { 6709 viewAncestor.dispatchWindowAnimationStopped(); 6710 } 6711 } 6712 6713 @Override 6714 public void dispatchWindowShown() { 6715 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6716 if (viewAncestor != null) { 6717 viewAncestor.dispatchWindowShown(); 6718 } 6719 } 6720 } 6721 6722 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6723 public CalledFromWrongThreadException(String msg) { 6724 super(msg); 6725 } 6726 } 6727 6728 static RunQueue getRunQueue() { 6729 RunQueue rq = sRunQueues.get(); 6730 if (rq != null) { 6731 return rq; 6732 } 6733 rq = new RunQueue(); 6734 sRunQueues.set(rq); 6735 return rq; 6736 } 6737 6738 /** 6739 * The run queue is used to enqueue pending work from Views when no Handler is 6740 * attached. The work is executed during the next call to performTraversals on 6741 * the thread. 6742 * @hide 6743 */ 6744 static final class RunQueue { 6745 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6746 6747 void post(Runnable action) { 6748 postDelayed(action, 0); 6749 } 6750 6751 void postDelayed(Runnable action, long delayMillis) { 6752 HandlerAction handlerAction = new HandlerAction(); 6753 handlerAction.action = action; 6754 handlerAction.delay = delayMillis; 6755 6756 synchronized (mActions) { 6757 mActions.add(handlerAction); 6758 } 6759 } 6760 6761 void removeCallbacks(Runnable action) { 6762 final HandlerAction handlerAction = new HandlerAction(); 6763 handlerAction.action = action; 6764 6765 synchronized (mActions) { 6766 final ArrayList<HandlerAction> actions = mActions; 6767 6768 while (actions.remove(handlerAction)) { 6769 // Keep going 6770 } 6771 } 6772 } 6773 6774 void executeActions(Handler handler) { 6775 synchronized (mActions) { 6776 final ArrayList<HandlerAction> actions = mActions; 6777 final int count = actions.size(); 6778 6779 for (int i = 0; i < count; i++) { 6780 final HandlerAction handlerAction = actions.get(i); 6781 handler.postDelayed(handlerAction.action, handlerAction.delay); 6782 } 6783 6784 actions.clear(); 6785 } 6786 } 6787 6788 private static class HandlerAction { 6789 Runnable action; 6790 long delay; 6791 6792 @Override 6793 public boolean equals(Object o) { 6794 if (this == o) return true; 6795 if (o == null || getClass() != o.getClass()) return false; 6796 6797 HandlerAction that = (HandlerAction) o; 6798 return !(action != null ? !action.equals(that.action) : that.action != null); 6799 6800 } 6801 6802 @Override 6803 public int hashCode() { 6804 int result = action != null ? action.hashCode() : 0; 6805 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6806 return result; 6807 } 6808 } 6809 } 6810 6811 /** 6812 * Class for managing the accessibility interaction connection 6813 * based on the global accessibility state. 6814 */ 6815 final class AccessibilityInteractionConnectionManager 6816 implements AccessibilityStateChangeListener { 6817 @Override 6818 public void onAccessibilityStateChanged(boolean enabled) { 6819 if (enabled) { 6820 ensureConnection(); 6821 if (mAttachInfo.mHasWindowFocus) { 6822 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6823 View focusedView = mView.findFocus(); 6824 if (focusedView != null && focusedView != mView) { 6825 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6826 } 6827 } 6828 } else { 6829 ensureNoConnection(); 6830 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6831 } 6832 } 6833 6834 public void ensureConnection() { 6835 final boolean registered = 6836 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6837 if (!registered) { 6838 mAttachInfo.mAccessibilityWindowId = 6839 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6840 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6841 } 6842 } 6843 6844 public void ensureNoConnection() { 6845 final boolean registered = 6846 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6847 if (registered) { 6848 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6849 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6850 } 6851 } 6852 } 6853 6854 final class HighContrastTextManager implements HighTextContrastChangeListener { 6855 HighContrastTextManager() { 6856 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 6857 } 6858 @Override 6859 public void onHighTextContrastStateChanged(boolean enabled) { 6860 mAttachInfo.mHighContrastText = enabled; 6861 6862 // Destroy Displaylists so they can be recreated with high contrast recordings 6863 destroyHardwareResources(); 6864 6865 // Schedule redraw, which will rerecord + redraw all text 6866 invalidate(); 6867 } 6868 } 6869 6870 /** 6871 * This class is an interface this ViewAncestor provides to the 6872 * AccessibilityManagerService to the latter can interact with 6873 * the view hierarchy in this ViewAncestor. 6874 */ 6875 static final class AccessibilityInteractionConnection 6876 extends IAccessibilityInteractionConnection.Stub { 6877 private final WeakReference<ViewRootImpl> mViewRootImpl; 6878 6879 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6880 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6881 } 6882 6883 @Override 6884 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6885 Region interactiveRegion, int interactionId, 6886 IAccessibilityInteractionConnectionCallback callback, int flags, 6887 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6888 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6889 if (viewRootImpl != null && viewRootImpl.mView != null) { 6890 viewRootImpl.getAccessibilityInteractionController() 6891 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6892 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6893 interrogatingTid, spec); 6894 } else { 6895 // We cannot make the call and notify the caller so it does not wait. 6896 try { 6897 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6898 } catch (RemoteException re) { 6899 /* best effort - ignore */ 6900 } 6901 } 6902 } 6903 6904 @Override 6905 public void performAccessibilityAction(long accessibilityNodeId, int action, 6906 Bundle arguments, int interactionId, 6907 IAccessibilityInteractionConnectionCallback callback, int flags, 6908 int interrogatingPid, long interrogatingTid) { 6909 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6910 if (viewRootImpl != null && viewRootImpl.mView != null) { 6911 viewRootImpl.getAccessibilityInteractionController() 6912 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6913 interactionId, callback, flags, interrogatingPid, interrogatingTid); 6914 } else { 6915 // We cannot make the call and notify the caller so it does not wait. 6916 try { 6917 callback.setPerformAccessibilityActionResult(false, interactionId); 6918 } catch (RemoteException re) { 6919 /* best effort - ignore */ 6920 } 6921 } 6922 } 6923 6924 @Override 6925 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6926 String viewId, Region interactiveRegion, int interactionId, 6927 IAccessibilityInteractionConnectionCallback callback, int flags, 6928 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6929 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6930 if (viewRootImpl != null && viewRootImpl.mView != null) { 6931 viewRootImpl.getAccessibilityInteractionController() 6932 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6933 viewId, interactiveRegion, interactionId, callback, flags, 6934 interrogatingPid, interrogatingTid, spec); 6935 } else { 6936 // We cannot make the call and notify the caller so it does not wait. 6937 try { 6938 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6939 } catch (RemoteException re) { 6940 /* best effort - ignore */ 6941 } 6942 } 6943 } 6944 6945 @Override 6946 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6947 Region interactiveRegion, int interactionId, 6948 IAccessibilityInteractionConnectionCallback callback, int flags, 6949 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6950 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6951 if (viewRootImpl != null && viewRootImpl.mView != null) { 6952 viewRootImpl.getAccessibilityInteractionController() 6953 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6954 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6955 interrogatingTid, spec); 6956 } else { 6957 // We cannot make the call and notify the caller so it does not wait. 6958 try { 6959 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6960 } catch (RemoteException re) { 6961 /* best effort - ignore */ 6962 } 6963 } 6964 } 6965 6966 @Override 6967 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 6968 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6969 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6970 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6971 if (viewRootImpl != null && viewRootImpl.mView != null) { 6972 viewRootImpl.getAccessibilityInteractionController() 6973 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 6974 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6975 spec); 6976 } else { 6977 // We cannot make the call and notify the caller so it does not wait. 6978 try { 6979 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6980 } catch (RemoteException re) { 6981 /* best effort - ignore */ 6982 } 6983 } 6984 } 6985 6986 @Override 6987 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 6988 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6989 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6990 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6991 if (viewRootImpl != null && viewRootImpl.mView != null) { 6992 viewRootImpl.getAccessibilityInteractionController() 6993 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 6994 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6995 spec); 6996 } else { 6997 // We cannot make the call and notify the caller so it does not wait. 6998 try { 6999 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7000 } catch (RemoteException re) { 7001 /* best effort - ignore */ 7002 } 7003 } 7004 } 7005 } 7006 7007 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 7008 private int mChangeTypes = 0; 7009 7010 public View mSource; 7011 public long mLastEventTimeMillis; 7012 7013 @Override 7014 public void run() { 7015 // The accessibility may be turned off while we were waiting so check again. 7016 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 7017 mLastEventTimeMillis = SystemClock.uptimeMillis(); 7018 AccessibilityEvent event = AccessibilityEvent.obtain(); 7019 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 7020 event.setContentChangeTypes(mChangeTypes); 7021 mSource.sendAccessibilityEventUnchecked(event); 7022 } else { 7023 mLastEventTimeMillis = 0; 7024 } 7025 // In any case reset to initial state. 7026 mSource.resetSubtreeAccessibilityStateChanged(); 7027 mSource = null; 7028 mChangeTypes = 0; 7029 } 7030 7031 public void runOrPost(View source, int changeType) { 7032 if (mSource != null) { 7033 // If there is no common predecessor, then mSource points to 7034 // a removed view, hence in this case always prefer the source. 7035 View predecessor = getCommonPredecessor(mSource, source); 7036 mSource = (predecessor != null) ? predecessor : source; 7037 mChangeTypes |= changeType; 7038 return; 7039 } 7040 mSource = source; 7041 mChangeTypes = changeType; 7042 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 7043 final long minEventIntevalMillis = 7044 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 7045 if (timeSinceLastMillis >= minEventIntevalMillis) { 7046 mSource.removeCallbacks(this); 7047 run(); 7048 } else { 7049 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 7050 } 7051 } 7052 } 7053} 7054