ViewRootImpl.java revision 16b631923ddf7a32d055e06d1dea70964f85e5a6
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import static android.view.WindowCallbacks.RESIZE_MODE_DOCKED_DIVIDER; 20import static android.view.WindowCallbacks.RESIZE_MODE_FREEFORM; 21import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY; 22import static android.view.WindowManager.LayoutParams.TYPE_DOCK_DIVIDER; 23import static android.view.WindowManager.LayoutParams.TYPE_INPUT_METHOD; 24import static android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL; 25import static android.view.WindowManager.LayoutParams.TYPE_VOLUME_OVERLAY; 26 27import android.Manifest; 28import android.animation.LayoutTransition; 29import android.app.ActivityManagerNative; 30import android.content.ClipDescription; 31import android.content.ComponentCallbacks; 32import android.content.Context; 33import android.content.pm.PackageManager; 34import android.content.res.CompatibilityInfo; 35import android.content.res.Configuration; 36import android.content.res.Resources; 37import android.graphics.Canvas; 38import android.graphics.Matrix; 39import android.graphics.PixelFormat; 40import android.graphics.Point; 41import android.graphics.PointF; 42import android.graphics.PorterDuff; 43import android.graphics.Rect; 44import android.graphics.Region; 45import android.graphics.drawable.Drawable; 46import android.hardware.display.DisplayManager; 47import android.hardware.display.DisplayManager.DisplayListener; 48import android.hardware.input.InputManager; 49import android.media.AudioManager; 50import android.os.Binder; 51import android.os.Build; 52import android.os.Bundle; 53import android.os.Debug; 54import android.os.Handler; 55import android.os.Looper; 56import android.os.Message; 57import android.os.ParcelFileDescriptor; 58import android.os.Process; 59import android.os.RemoteException; 60import android.os.SystemClock; 61import android.os.SystemProperties; 62import android.os.Trace; 63import android.util.AndroidRuntimeException; 64import android.util.DisplayMetrics; 65import android.util.Log; 66import android.util.Slog; 67import android.util.TimeUtils; 68import android.util.TypedValue; 69import android.view.Surface.OutOfResourcesException; 70import android.view.View.AttachInfo; 71import android.view.View.MeasureSpec; 72import android.view.accessibility.AccessibilityEvent; 73import android.view.accessibility.AccessibilityManager; 74import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 75import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 76import android.view.accessibility.AccessibilityNodeInfo; 77import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction; 78import android.view.accessibility.AccessibilityNodeProvider; 79import android.view.accessibility.IAccessibilityInteractionConnection; 80import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 81import android.view.animation.AccelerateDecelerateInterpolator; 82import android.view.animation.Interpolator; 83import android.view.inputmethod.InputConnection; 84import android.view.inputmethod.InputMethodManager; 85import android.widget.Scroller; 86 87import com.android.internal.R; 88import com.android.internal.annotations.GuardedBy; 89import com.android.internal.os.IResultReceiver; 90import com.android.internal.os.SomeArgs; 91import com.android.internal.policy.PhoneFallbackEventHandler; 92import com.android.internal.view.BaseSurfaceHolder; 93import com.android.internal.view.RootViewSurfaceTaker; 94 95import java.io.FileDescriptor; 96import java.io.IOException; 97import java.io.OutputStream; 98import java.io.PrintWriter; 99import java.lang.ref.WeakReference; 100import java.util.ArrayList; 101import java.util.HashSet; 102import java.util.concurrent.CountDownLatch; 103 104/** 105 * The top of a view hierarchy, implementing the needed protocol between View 106 * and the WindowManager. This is for the most part an internal implementation 107 * detail of {@link WindowManagerGlobal}. 108 * 109 * {@hide} 110 */ 111@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 112public final class ViewRootImpl implements ViewParent, 113 View.AttachInfo.Callbacks, ThreadedRenderer.HardwareDrawCallbacks { 114 private static final String TAG = "ViewRootImpl"; 115 private static final boolean DBG = false; 116 private static final boolean LOCAL_LOGV = false; 117 /** @noinspection PointlessBooleanExpression*/ 118 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 119 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 120 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 121 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 122 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 123 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 124 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 125 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 126 private static final boolean DEBUG_FPS = false; 127 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 128 129 /** 130 * Set to false if we do not want to use the multi threaded renderer. Note that by disabling 131 * this, WindowCallbacks will not fire. 132 */ 133 private static final boolean USE_MT_RENDERER = true; 134 135 /** 136 * Set this system property to true to force the view hierarchy to render 137 * at 60 Hz. This can be used to measure the potential framerate. 138 */ 139 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 140 141 // properties used by emulator to determine display shape 142 public static final String PROPERTY_EMULATOR_WIN_OUTSET_BOTTOM_PX = 143 "ro.emu.win_outset_bottom_px"; 144 145 /** 146 * Maximum time we allow the user to roll the trackball enough to generate 147 * a key event, before resetting the counters. 148 */ 149 static final int MAX_TRACKBALL_DELAY = 250; 150 151 static final ThreadLocal<HandlerActionQueue> sRunQueues = new ThreadLocal<HandlerActionQueue>(); 152 153 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList(); 154 static boolean sFirstDrawComplete = false; 155 156 static final ArrayList<ComponentCallbacks> sConfigCallbacks = new ArrayList(); 157 158 /** 159 * This list must only be modified by the main thread, so a lock is only needed when changing 160 * the list or when accessing the list from a non-main thread. 161 */ 162 @GuardedBy("mWindowCallbacks") 163 final ArrayList<WindowCallbacks> mWindowCallbacks = new ArrayList<>(); 164 final Context mContext; 165 final IWindowSession mWindowSession; 166 final Display mDisplay; 167 final DisplayManager mDisplayManager; 168 final String mBasePackageName; 169 170 final int[] mTmpLocation = new int[2]; 171 172 final TypedValue mTmpValue = new TypedValue(); 173 174 final Thread mThread; 175 176 final WindowLeaked mLocation; 177 178 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 179 180 final W mWindow; 181 182 final int mTargetSdkVersion; 183 184 int mSeq; 185 186 View mView; 187 188 View mAccessibilityFocusedHost; 189 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 190 191 // The view which captures mouse input, or null when no one is capturing. 192 View mCapturingView; 193 194 int mViewVisibility; 195 boolean mAppVisible = true; 196 // For recents to freeform transition we need to keep drawing after the app receives information 197 // that it became invisible. This will ignore that information and depend on the decor view 198 // visibility to control drawing. The decor view visibility will get adjusted when the app get 199 // stopped and that's when the app will stop drawing further frames. 200 private boolean mForceDecorViewVisibility = false; 201 int mOrigWindowType = -1; 202 203 /** Whether the window had focus during the most recent traversal. */ 204 boolean mHadWindowFocus; 205 206 /** 207 * Whether the window lost focus during a previous traversal and has not 208 * yet gained it back. Used to determine whether a WINDOW_STATE_CHANGE 209 * accessibility events should be sent during traversal. 210 */ 211 boolean mLostWindowFocus; 212 213 // Set to true if the owner of this window is in the stopped state, 214 // so the window should no longer be active. 215 boolean mStopped = false; 216 217 // Set to true if the owner of this window is in ambient mode, 218 // which means it won't receive input events. 219 boolean mIsAmbientMode = false; 220 221 // Set to true to stop input during an Activity Transition. 222 boolean mPausedForTransition = false; 223 224 boolean mLastInCompatMode = false; 225 226 SurfaceHolder.Callback2 mSurfaceHolderCallback; 227 BaseSurfaceHolder mSurfaceHolder; 228 boolean mIsCreating; 229 boolean mDrawingAllowed; 230 231 final Region mTransparentRegion; 232 final Region mPreviousTransparentRegion; 233 234 int mWidth; 235 int mHeight; 236 Rect mDirty; 237 boolean mIsAnimating; 238 239 private boolean mDragResizing; 240 private boolean mInvalidateRootRequested; 241 private int mResizeMode; 242 private int mCanvasOffsetX; 243 private int mCanvasOffsetY; 244 private boolean mActivityRelaunched; 245 246 CompatibilityInfo.Translator mTranslator; 247 248 final View.AttachInfo mAttachInfo; 249 InputChannel mInputChannel; 250 InputQueue.Callback mInputQueueCallback; 251 InputQueue mInputQueue; 252 FallbackEventHandler mFallbackEventHandler; 253 Choreographer mChoreographer; 254 255 final Rect mTempRect; // used in the transaction to not thrash the heap. 256 final Rect mVisRect; // used to retrieve visible rect of focused view. 257 258 boolean mTraversalScheduled; 259 int mTraversalBarrier; 260 boolean mWillDrawSoon; 261 /** Set to true while in performTraversals for detecting when die(true) is called from internal 262 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 263 boolean mIsInTraversal; 264 boolean mApplyInsetsRequested; 265 boolean mLayoutRequested; 266 boolean mFirst; 267 boolean mReportNextDraw; 268 boolean mFullRedrawNeeded; 269 boolean mNewSurfaceNeeded; 270 boolean mHasHadWindowFocus; 271 boolean mLastWasImTarget; 272 boolean mForceNextWindowRelayout; 273 CountDownLatch mWindowDrawCountDown; 274 275 boolean mIsDrawing; 276 int mLastSystemUiVisibility; 277 int mClientWindowLayoutFlags; 278 boolean mLastOverscanRequested; 279 280 // Pool of queued input events. 281 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 282 private QueuedInputEvent mQueuedInputEventPool; 283 private int mQueuedInputEventPoolSize; 284 285 /* Input event queue. 286 * Pending input events are input events waiting to be delivered to the input stages 287 * and handled by the application. 288 */ 289 QueuedInputEvent mPendingInputEventHead; 290 QueuedInputEvent mPendingInputEventTail; 291 int mPendingInputEventCount; 292 boolean mProcessInputEventsScheduled; 293 boolean mUnbufferedInputDispatch; 294 String mPendingInputEventQueueLengthCounterName = "pq"; 295 296 InputStage mFirstInputStage; 297 InputStage mFirstPostImeInputStage; 298 InputStage mSyntheticInputStage; 299 300 boolean mWindowAttributesChanged = false; 301 int mWindowAttributesChangesFlag = 0; 302 303 // These can be accessed by any thread, must be protected with a lock. 304 // Surface can never be reassigned or cleared (use Surface.clear()). 305 final Surface mSurface = new Surface(); 306 307 boolean mAdded; 308 boolean mAddedTouchMode; 309 310 final DisplayAdjustments mDisplayAdjustments; 311 312 // These are accessed by multiple threads. 313 final Rect mWinFrame; // frame given by window manager. 314 315 final Rect mPendingOverscanInsets = new Rect(); 316 final Rect mPendingVisibleInsets = new Rect(); 317 final Rect mPendingStableInsets = new Rect(); 318 final Rect mPendingContentInsets = new Rect(); 319 final Rect mPendingOutsets = new Rect(); 320 final Rect mPendingBackDropFrame = new Rect(); 321 boolean mPendingAlwaysConsumeNavBar; 322 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 323 = new ViewTreeObserver.InternalInsetsInfo(); 324 325 final Rect mDispatchContentInsets = new Rect(); 326 final Rect mDispatchStableInsets = new Rect(); 327 328 private WindowInsets mLastWindowInsets; 329 330 final Configuration mLastConfiguration = new Configuration(); 331 final Configuration mPendingConfiguration = new Configuration(); 332 333 boolean mScrollMayChange; 334 int mSoftInputMode; 335 WeakReference<View> mLastScrolledFocus; 336 int mScrollY; 337 int mCurScrollY; 338 Scroller mScroller; 339 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 340 private ArrayList<LayoutTransition> mPendingTransitions; 341 342 final ViewConfiguration mViewConfiguration; 343 344 /* Drag/drop */ 345 ClipDescription mDragDescription; 346 View mCurrentDragView; 347 volatile Object mLocalDragState; 348 final PointF mDragPoint = new PointF(); 349 final PointF mLastTouchPoint = new PointF(); 350 int mLastTouchSource; 351 352 private boolean mProfileRendering; 353 private Choreographer.FrameCallback mRenderProfiler; 354 private boolean mRenderProfilingEnabled; 355 356 // Variables to track frames per second, enabled via DEBUG_FPS flag 357 private long mFpsStartTime = -1; 358 private long mFpsPrevTime = -1; 359 private int mFpsNumFrames; 360 361 private int mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 362 private PointerIcon mCustomPointerIcon = null; 363 364 /** 365 * see {@link #playSoundEffect(int)} 366 */ 367 AudioManager mAudioManager; 368 369 final AccessibilityManager mAccessibilityManager; 370 371 AccessibilityInteractionController mAccessibilityInteractionController; 372 373 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 374 HighContrastTextManager mHighContrastTextManager; 375 376 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 377 378 HashSet<View> mTempHashSet; 379 380 private final int mDensity; 381 private final int mNoncompatDensity; 382 383 private boolean mInLayout = false; 384 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 385 boolean mHandlingLayoutInLayoutRequest = false; 386 387 private int mViewLayoutDirectionInitial; 388 389 /** Set to true once doDie() has been called. */ 390 private boolean mRemoved; 391 392 /** 393 * Consistency verifier for debugging purposes. 394 */ 395 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 396 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 397 new InputEventConsistencyVerifier(this, 0) : null; 398 399 static final class SystemUiVisibilityInfo { 400 int seq; 401 int globalVisibility; 402 int localValue; 403 int localChanges; 404 } 405 406 private String mTag = TAG; 407 408 public ViewRootImpl(Context context, Display display) { 409 mContext = context; 410 mWindowSession = WindowManagerGlobal.getWindowSession(); 411 mDisplay = display; 412 mBasePackageName = context.getBasePackageName(); 413 414 mDisplayAdjustments = display.getDisplayAdjustments(); 415 416 mThread = Thread.currentThread(); 417 mLocation = new WindowLeaked(null); 418 mLocation.fillInStackTrace(); 419 mWidth = -1; 420 mHeight = -1; 421 mDirty = new Rect(); 422 mTempRect = new Rect(); 423 mVisRect = new Rect(); 424 mWinFrame = new Rect(); 425 mWindow = new W(this); 426 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 427 mViewVisibility = View.GONE; 428 mTransparentRegion = new Region(); 429 mPreviousTransparentRegion = new Region(); 430 mFirst = true; // true for the first time the view is added 431 mAdded = false; 432 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 433 mAccessibilityManager = AccessibilityManager.getInstance(context); 434 mAccessibilityInteractionConnectionManager = 435 new AccessibilityInteractionConnectionManager(); 436 mAccessibilityManager.addAccessibilityStateChangeListener( 437 mAccessibilityInteractionConnectionManager); 438 mHighContrastTextManager = new HighContrastTextManager(); 439 mAccessibilityManager.addHighTextContrastStateChangeListener( 440 mHighContrastTextManager); 441 mViewConfiguration = ViewConfiguration.get(context); 442 mDensity = context.getResources().getDisplayMetrics().densityDpi; 443 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 444 mFallbackEventHandler = new PhoneFallbackEventHandler(context); 445 mChoreographer = Choreographer.getInstance(); 446 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 447 loadSystemProperties(); 448 } 449 450 public static void addFirstDrawHandler(Runnable callback) { 451 synchronized (sFirstDrawHandlers) { 452 if (!sFirstDrawComplete) { 453 sFirstDrawHandlers.add(callback); 454 } 455 } 456 } 457 458 public static void addConfigCallback(ComponentCallbacks callback) { 459 synchronized (sConfigCallbacks) { 460 sConfigCallbacks.add(callback); 461 } 462 } 463 464 public void addWindowCallbacks(WindowCallbacks callback) { 465 if (USE_MT_RENDERER) { 466 synchronized (mWindowCallbacks) { 467 mWindowCallbacks.add(callback); 468 } 469 } 470 } 471 472 public void removeWindowCallbacks(WindowCallbacks callback) { 473 if (USE_MT_RENDERER) { 474 synchronized (mWindowCallbacks) { 475 mWindowCallbacks.remove(callback); 476 } 477 } 478 } 479 480 public void reportDrawFinish() { 481 if (mWindowDrawCountDown != null) { 482 mWindowDrawCountDown.countDown(); 483 } 484 } 485 486 // FIXME for perf testing only 487 private boolean mProfile = false; 488 489 /** 490 * Call this to profile the next traversal call. 491 * FIXME for perf testing only. Remove eventually 492 */ 493 public void profile() { 494 mProfile = true; 495 } 496 497 /** 498 * Indicates whether we are in touch mode. Calling this method triggers an IPC 499 * call and should be avoided whenever possible. 500 * 501 * @return True, if the device is in touch mode, false otherwise. 502 * 503 * @hide 504 */ 505 static boolean isInTouchMode() { 506 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 507 if (windowSession != null) { 508 try { 509 return windowSession.getInTouchMode(); 510 } catch (RemoteException e) { 511 } 512 } 513 return false; 514 } 515 516 /** 517 * We have one child 518 */ 519 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 520 synchronized (this) { 521 if (mView == null) { 522 mView = view; 523 524 mAttachInfo.mDisplayState = mDisplay.getState(); 525 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 526 527 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 528 mFallbackEventHandler.setView(view); 529 mWindowAttributes.copyFrom(attrs); 530 if (mWindowAttributes.packageName == null) { 531 mWindowAttributes.packageName = mBasePackageName; 532 } 533 attrs = mWindowAttributes; 534 setTag(); 535 // Keep track of the actual window flags supplied by the client. 536 mClientWindowLayoutFlags = attrs.flags; 537 538 setAccessibilityFocus(null, null); 539 540 if (view instanceof RootViewSurfaceTaker) { 541 mSurfaceHolderCallback = 542 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 543 if (mSurfaceHolderCallback != null) { 544 mSurfaceHolder = new TakenSurfaceHolder(); 545 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 546 } 547 } 548 549 // Compute surface insets required to draw at specified Z value. 550 // TODO: Use real shadow insets for a constant max Z. 551 if (!attrs.hasManualSurfaceInsets) { 552 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 553 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 554 } 555 556 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 557 mTranslator = compatibilityInfo.getTranslator(); 558 559 // If the application owns the surface, don't enable hardware acceleration 560 if (mSurfaceHolder == null) { 561 enableHardwareAcceleration(attrs); 562 } 563 564 boolean restore = false; 565 if (mTranslator != null) { 566 mSurface.setCompatibilityTranslator(mTranslator); 567 restore = true; 568 attrs.backup(); 569 mTranslator.translateWindowLayout(attrs); 570 } 571 if (DEBUG_LAYOUT) Log.d(mTag, "WindowLayout in setView:" + attrs); 572 573 if (!compatibilityInfo.supportsScreen()) { 574 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 575 mLastInCompatMode = true; 576 } 577 578 mSoftInputMode = attrs.softInputMode; 579 mWindowAttributesChanged = true; 580 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 581 mAttachInfo.mRootView = view; 582 mAttachInfo.mScalingRequired = mTranslator != null; 583 mAttachInfo.mApplicationScale = 584 mTranslator == null ? 1.0f : mTranslator.applicationScale; 585 if (panelParentView != null) { 586 mAttachInfo.mPanelParentWindowToken 587 = panelParentView.getApplicationWindowToken(); 588 } 589 mAdded = true; 590 int res; /* = WindowManagerImpl.ADD_OKAY; */ 591 592 // Schedule the first layout -before- adding to the window 593 // manager, to make sure we do the relayout before receiving 594 // any other events from the system. 595 requestLayout(); 596 if ((mWindowAttributes.inputFeatures 597 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 598 mInputChannel = new InputChannel(); 599 } 600 mForceDecorViewVisibility = (mWindowAttributes.privateFlags 601 & PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY) != 0; 602 try { 603 mOrigWindowType = mWindowAttributes.type; 604 mAttachInfo.mRecomputeGlobalAttributes = true; 605 collectViewAttributes(); 606 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 607 getHostVisibility(), mDisplay.getDisplayId(), 608 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, 609 mAttachInfo.mOutsets, mInputChannel); 610 } catch (RemoteException e) { 611 mAdded = false; 612 mView = null; 613 mAttachInfo.mRootView = null; 614 mInputChannel = null; 615 mFallbackEventHandler.setView(null); 616 unscheduleTraversals(); 617 setAccessibilityFocus(null, null); 618 throw new RuntimeException("Adding window failed", e); 619 } finally { 620 if (restore) { 621 attrs.restore(); 622 } 623 } 624 625 if (mTranslator != null) { 626 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 627 } 628 mPendingOverscanInsets.set(0, 0, 0, 0); 629 mPendingContentInsets.set(mAttachInfo.mContentInsets); 630 mPendingStableInsets.set(mAttachInfo.mStableInsets); 631 mPendingVisibleInsets.set(0, 0, 0, 0); 632 mAttachInfo.mAlwaysConsumeNavBar = 633 (res & WindowManagerGlobal.ADD_FLAG_ALWAYS_CONSUME_NAV_BAR) != 0; 634 mPendingAlwaysConsumeNavBar = mAttachInfo.mAlwaysConsumeNavBar; 635 if (DEBUG_LAYOUT) Log.v(mTag, "Added window " + mWindow); 636 if (res < WindowManagerGlobal.ADD_OKAY) { 637 mAttachInfo.mRootView = null; 638 mAdded = false; 639 mFallbackEventHandler.setView(null); 640 unscheduleTraversals(); 641 setAccessibilityFocus(null, null); 642 switch (res) { 643 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 644 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 645 throw new WindowManager.BadTokenException( 646 "Unable to add window -- token " + attrs.token 647 + " is not valid; is your activity running?"); 648 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 649 throw new WindowManager.BadTokenException( 650 "Unable to add window -- token " + attrs.token 651 + " is not for an application"); 652 case WindowManagerGlobal.ADD_APP_EXITING: 653 throw new WindowManager.BadTokenException( 654 "Unable to add window -- app for token " + attrs.token 655 + " is exiting"); 656 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 657 throw new WindowManager.BadTokenException( 658 "Unable to add window -- window " + mWindow 659 + " has already been added"); 660 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 661 // Silently ignore -- we would have just removed it 662 // right away, anyway. 663 return; 664 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 665 throw new WindowManager.BadTokenException("Unable to add window " 666 + mWindow + " -- another window of type " 667 + mWindowAttributes.type + " already exists"); 668 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 669 throw new WindowManager.BadTokenException("Unable to add window " 670 + mWindow + " -- permission denied for window type " 671 + mWindowAttributes.type); 672 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 673 throw new WindowManager.InvalidDisplayException("Unable to add window " 674 + mWindow + " -- the specified display can not be found"); 675 case WindowManagerGlobal.ADD_INVALID_TYPE: 676 throw new WindowManager.InvalidDisplayException("Unable to add window " 677 + mWindow + " -- the specified window type " 678 + mWindowAttributes.type + " is not valid"); 679 } 680 throw new RuntimeException( 681 "Unable to add window -- unknown error code " + res); 682 } 683 684 if (view instanceof RootViewSurfaceTaker) { 685 mInputQueueCallback = 686 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 687 } 688 if (mInputChannel != null) { 689 if (mInputQueueCallback != null) { 690 mInputQueue = new InputQueue(); 691 mInputQueueCallback.onInputQueueCreated(mInputQueue); 692 } 693 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 694 Looper.myLooper()); 695 } 696 697 view.assignParent(this); 698 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 699 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 700 701 if (mAccessibilityManager.isEnabled()) { 702 mAccessibilityInteractionConnectionManager.ensureConnection(); 703 } 704 705 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 706 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 707 } 708 709 // Set up the input pipeline. 710 CharSequence counterSuffix = attrs.getTitle(); 711 mSyntheticInputStage = new SyntheticInputStage(); 712 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 713 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 714 "aq:native-post-ime:" + counterSuffix); 715 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 716 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 717 "aq:ime:" + counterSuffix); 718 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 719 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 720 "aq:native-pre-ime:" + counterSuffix); 721 722 mFirstInputStage = nativePreImeStage; 723 mFirstPostImeInputStage = earlyPostImeStage; 724 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 725 } 726 } 727 } 728 729 private void setTag() { 730 final String[] split = mWindowAttributes.getTitle().toString().split("\\."); 731 if (split.length > 0) { 732 mTag = TAG + "[" + split[split.length - 1] + "]"; 733 } 734 } 735 736 /** Whether the window is in local focus mode or not */ 737 private boolean isInLocalFocusMode() { 738 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 739 } 740 741 public int getWindowFlags() { 742 return mWindowAttributes.flags; 743 } 744 745 public int getDisplayId() { 746 return mDisplay.getDisplayId(); 747 } 748 749 public CharSequence getTitle() { 750 return mWindowAttributes.getTitle(); 751 } 752 753 void destroyHardwareResources() { 754 if (mAttachInfo.mHardwareRenderer != null) { 755 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 756 mAttachInfo.mHardwareRenderer.destroy(); 757 } 758 } 759 760 public void detachFunctor(long functor) { 761 if (mAttachInfo.mHardwareRenderer != null) { 762 // Fence so that any pending invokeFunctor() messages will be processed 763 // before we return from detachFunctor. 764 mAttachInfo.mHardwareRenderer.stopDrawing(); 765 } 766 } 767 768 /** 769 * Schedules the functor for execution in either kModeProcess or 770 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 771 * 772 * @param functor The native functor to invoke 773 * @param waitForCompletion If true, this will not return until the functor 774 * has invoked. If false, the functor may be invoked 775 * asynchronously. 776 */ 777 public void invokeFunctor(long functor, boolean waitForCompletion) { 778 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 779 } 780 781 public void registerAnimatingRenderNode(RenderNode animator) { 782 if (mAttachInfo.mHardwareRenderer != null) { 783 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 784 } else { 785 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 786 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 787 } 788 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 789 } 790 } 791 792 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 793 mAttachInfo.mHardwareAccelerated = false; 794 mAttachInfo.mHardwareAccelerationRequested = false; 795 796 // Don't enable hardware acceleration when the application is in compatibility mode 797 if (mTranslator != null) return; 798 799 // Try to enable hardware acceleration if requested 800 final boolean hardwareAccelerated = 801 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 802 803 if (hardwareAccelerated) { 804 if (!ThreadedRenderer.isAvailable()) { 805 return; 806 } 807 808 // Persistent processes (including the system) should not do 809 // accelerated rendering on low-end devices. In that case, 810 // sRendererDisabled will be set. In addition, the system process 811 // itself should never do accelerated rendering. In that case, both 812 // sRendererDisabled and sSystemRendererDisabled are set. When 813 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 814 // can be used by code on the system process to escape that and enable 815 // HW accelerated drawing. (This is basically for the lock screen.) 816 817 final boolean fakeHwAccelerated = (attrs.privateFlags & 818 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 819 final boolean forceHwAccelerated = (attrs.privateFlags & 820 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 821 822 if (fakeHwAccelerated) { 823 // This is exclusively for the preview windows the window manager 824 // shows for launching applications, so they will look more like 825 // the app being launched. 826 mAttachInfo.mHardwareAccelerationRequested = true; 827 } else if (!ThreadedRenderer.sRendererDisabled 828 || (ThreadedRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 829 if (mAttachInfo.mHardwareRenderer != null) { 830 mAttachInfo.mHardwareRenderer.destroy(); 831 } 832 833 final Rect insets = attrs.surfaceInsets; 834 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 835 || insets.top != 0 || insets.bottom != 0; 836 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 837 mAttachInfo.mHardwareRenderer = ThreadedRenderer.create(mContext, translucent); 838 if (mAttachInfo.mHardwareRenderer != null) { 839 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 840 mAttachInfo.mHardwareAccelerated = 841 mAttachInfo.mHardwareAccelerationRequested = true; 842 } 843 } 844 } 845 } 846 847 public View getView() { 848 return mView; 849 } 850 851 final WindowLeaked getLocation() { 852 return mLocation; 853 } 854 855 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 856 synchronized (this) { 857 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 858 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 859 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 860 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 861 final int oldSoftInputMode = mWindowAttributes.softInputMode; 862 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 863 864 // Keep track of the actual window flags supplied by the client. 865 mClientWindowLayoutFlags = attrs.flags; 866 867 // Preserve compatible window flag if exists. 868 final int compatibleWindowFlag = mWindowAttributes.privateFlags 869 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 870 871 // Transfer over system UI visibility values as they carry current state. 872 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 873 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 874 875 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 876 if ((mWindowAttributesChangesFlag 877 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 878 // Recompute system ui visibility. 879 mAttachInfo.mRecomputeGlobalAttributes = true; 880 } 881 if (mWindowAttributes.packageName == null) { 882 mWindowAttributes.packageName = mBasePackageName; 883 } 884 mWindowAttributes.privateFlags |= compatibleWindowFlag; 885 886 // Restore old surface insets. 887 mWindowAttributes.surfaceInsets.set( 888 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 889 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 890 891 applyKeepScreenOnFlag(mWindowAttributes); 892 893 if (newView) { 894 mSoftInputMode = attrs.softInputMode; 895 requestLayout(); 896 } 897 898 // Don't lose the mode we last auto-computed. 899 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 900 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 901 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 902 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 903 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 904 } 905 906 mWindowAttributesChanged = true; 907 scheduleTraversals(); 908 } 909 } 910 911 void handleAppVisibility(boolean visible) { 912 if (mAppVisible != visible) { 913 mAppVisible = visible; 914 scheduleTraversals(); 915 if (!mAppVisible) { 916 WindowManagerGlobal.trimForeground(); 917 } 918 } 919 } 920 921 void handleGetNewSurface() { 922 mNewSurfaceNeeded = true; 923 mFullRedrawNeeded = true; 924 scheduleTraversals(); 925 } 926 927 private final DisplayListener mDisplayListener = new DisplayListener() { 928 @Override 929 public void onDisplayChanged(int displayId) { 930 if (mView != null && mDisplay.getDisplayId() == displayId) { 931 final int oldDisplayState = mAttachInfo.mDisplayState; 932 final int newDisplayState = mDisplay.getState(); 933 if (oldDisplayState != newDisplayState) { 934 mAttachInfo.mDisplayState = newDisplayState; 935 pokeDrawLockIfNeeded(); 936 if (oldDisplayState != Display.STATE_UNKNOWN) { 937 final int oldScreenState = toViewScreenState(oldDisplayState); 938 final int newScreenState = toViewScreenState(newDisplayState); 939 if (oldScreenState != newScreenState) { 940 mView.dispatchScreenStateChanged(newScreenState); 941 } 942 if (oldDisplayState == Display.STATE_OFF) { 943 // Draw was suppressed so we need to for it to happen here. 944 mFullRedrawNeeded = true; 945 scheduleTraversals(); 946 } 947 } 948 } 949 } 950 } 951 952 @Override 953 public void onDisplayRemoved(int displayId) { 954 } 955 956 @Override 957 public void onDisplayAdded(int displayId) { 958 } 959 960 private int toViewScreenState(int displayState) { 961 return displayState == Display.STATE_OFF ? 962 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 963 } 964 }; 965 966 void pokeDrawLockIfNeeded() { 967 final int displayState = mAttachInfo.mDisplayState; 968 if (mView != null && mAdded && mTraversalScheduled 969 && (displayState == Display.STATE_DOZE 970 || displayState == Display.STATE_DOZE_SUSPEND)) { 971 try { 972 mWindowSession.pokeDrawLock(mWindow); 973 } catch (RemoteException ex) { 974 // System server died, oh well. 975 } 976 } 977 } 978 979 @Override 980 public void requestFitSystemWindows() { 981 checkThread(); 982 mApplyInsetsRequested = true; 983 scheduleTraversals(); 984 } 985 986 @Override 987 public void requestLayout() { 988 if (!mHandlingLayoutInLayoutRequest) { 989 checkThread(); 990 mLayoutRequested = true; 991 scheduleTraversals(); 992 } 993 } 994 995 @Override 996 public boolean isLayoutRequested() { 997 return mLayoutRequested; 998 } 999 1000 void invalidate() { 1001 mDirty.set(0, 0, mWidth, mHeight); 1002 if (!mWillDrawSoon) { 1003 scheduleTraversals(); 1004 } 1005 } 1006 1007 void invalidateWorld(View view) { 1008 view.invalidate(); 1009 if (view instanceof ViewGroup) { 1010 ViewGroup parent = (ViewGroup) view; 1011 for (int i = 0; i < parent.getChildCount(); i++) { 1012 invalidateWorld(parent.getChildAt(i)); 1013 } 1014 } 1015 } 1016 1017 @Override 1018 public void invalidateChild(View child, Rect dirty) { 1019 invalidateChildInParent(null, dirty); 1020 } 1021 1022 @Override 1023 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 1024 checkThread(); 1025 if (DEBUG_DRAW) Log.v(mTag, "Invalidate child: " + dirty); 1026 1027 if (dirty == null) { 1028 invalidate(); 1029 return null; 1030 } else if (dirty.isEmpty() && !mIsAnimating) { 1031 return null; 1032 } 1033 1034 if (mCurScrollY != 0 || mTranslator != null) { 1035 mTempRect.set(dirty); 1036 dirty = mTempRect; 1037 if (mCurScrollY != 0) { 1038 dirty.offset(0, -mCurScrollY); 1039 } 1040 if (mTranslator != null) { 1041 mTranslator.translateRectInAppWindowToScreen(dirty); 1042 } 1043 if (mAttachInfo.mScalingRequired) { 1044 dirty.inset(-1, -1); 1045 } 1046 } 1047 1048 invalidateRectOnScreen(dirty); 1049 1050 return null; 1051 } 1052 1053 private void invalidateRectOnScreen(Rect dirty) { 1054 final Rect localDirty = mDirty; 1055 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 1056 mAttachInfo.mSetIgnoreDirtyState = true; 1057 mAttachInfo.mIgnoreDirtyState = true; 1058 } 1059 1060 // Add the new dirty rect to the current one 1061 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 1062 // Intersect with the bounds of the window to skip 1063 // updates that lie outside of the visible region 1064 final float appScale = mAttachInfo.mApplicationScale; 1065 final boolean intersected = localDirty.intersect(0, 0, 1066 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 1067 if (!intersected) { 1068 localDirty.setEmpty(); 1069 } 1070 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 1071 scheduleTraversals(); 1072 } 1073 } 1074 1075 public void setIsAmbientMode(boolean ambient) { 1076 mIsAmbientMode = ambient; 1077 } 1078 1079 void setWindowStopped(boolean stopped) { 1080 if (mStopped != stopped) { 1081 mStopped = stopped; 1082 if (!mStopped) { 1083 scheduleTraversals(); 1084 } else { 1085 if (mAttachInfo.mHardwareRenderer != null) { 1086 if (DEBUG_DRAW) Log.d(mTag, "WindowStopped on " + getTitle()); 1087 mAttachInfo.mHardwareRenderer.updateSurface(null); 1088 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 1089 } 1090 } 1091 } 1092 } 1093 1094 /** 1095 * Block the input events during an Activity Transition. The KEYCODE_BACK event is allowed 1096 * through to allow quick reversal of the Activity Transition. 1097 * 1098 * @param paused true to pause, false to resume. 1099 */ 1100 public void setPausedForTransition(boolean paused) { 1101 mPausedForTransition = paused; 1102 } 1103 1104 @Override 1105 public ViewParent getParent() { 1106 return null; 1107 } 1108 1109 @Override 1110 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 1111 if (child != mView) { 1112 throw new RuntimeException("child is not mine, honest!"); 1113 } 1114 // Note: don't apply scroll offset, because we want to know its 1115 // visibility in the virtual canvas being given to the view hierarchy. 1116 return r.intersect(0, 0, mWidth, mHeight); 1117 } 1118 1119 @Override 1120 public void bringChildToFront(View child) { 1121 } 1122 1123 int getHostVisibility() { 1124 return (mAppVisible || mForceDecorViewVisibility) ? mView.getVisibility() : View.GONE; 1125 } 1126 1127 /** 1128 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1129 * This list will be cleared after the transitions on the list are start()'ed. These 1130 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1131 * happens during the layout phase of traversal, which we want to complete before any of the 1132 * animations are started (because those animations may side-effect properties that layout 1133 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1134 * to the list and it is started just prior to starting the drawing phase of traversal. 1135 * 1136 * @param transition The LayoutTransition to be started on the next traversal. 1137 * 1138 * @hide 1139 */ 1140 public void requestTransitionStart(LayoutTransition transition) { 1141 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1142 if (mPendingTransitions == null) { 1143 mPendingTransitions = new ArrayList<LayoutTransition>(); 1144 } 1145 mPendingTransitions.add(transition); 1146 } 1147 } 1148 1149 /** 1150 * Notifies the HardwareRenderer that a new frame will be coming soon. 1151 * Currently only {@link ThreadedRenderer} cares about this, and uses 1152 * this knowledge to adjust the scheduling of off-thread animations 1153 */ 1154 void notifyRendererOfFramePending() { 1155 if (mAttachInfo.mHardwareRenderer != null) { 1156 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1157 } 1158 } 1159 1160 void scheduleTraversals() { 1161 if (!mTraversalScheduled) { 1162 mTraversalScheduled = true; 1163 mTraversalBarrier = mHandler.getLooper().getQueue().postSyncBarrier(); 1164 mChoreographer.postCallback( 1165 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1166 if (!mUnbufferedInputDispatch) { 1167 scheduleConsumeBatchedInput(); 1168 } 1169 notifyRendererOfFramePending(); 1170 pokeDrawLockIfNeeded(); 1171 } 1172 } 1173 1174 void unscheduleTraversals() { 1175 if (mTraversalScheduled) { 1176 mTraversalScheduled = false; 1177 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1178 mChoreographer.removeCallbacks( 1179 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1180 } 1181 } 1182 1183 void doTraversal() { 1184 if (mTraversalScheduled) { 1185 mTraversalScheduled = false; 1186 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1187 1188 if (mProfile) { 1189 Debug.startMethodTracing("ViewAncestor"); 1190 } 1191 1192 performTraversals(); 1193 1194 if (mProfile) { 1195 Debug.stopMethodTracing(); 1196 mProfile = false; 1197 } 1198 } 1199 } 1200 1201 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1202 // Update window's global keep screen on flag: if a view has requested 1203 // that the screen be kept on, then it is always set; otherwise, it is 1204 // set to whatever the client last requested for the global state. 1205 if (mAttachInfo.mKeepScreenOn) { 1206 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1207 } else { 1208 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1209 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1210 } 1211 } 1212 1213 private boolean collectViewAttributes() { 1214 if (mAttachInfo.mRecomputeGlobalAttributes) { 1215 //Log.i(mTag, "Computing view hierarchy attributes!"); 1216 mAttachInfo.mRecomputeGlobalAttributes = false; 1217 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1218 mAttachInfo.mKeepScreenOn = false; 1219 mAttachInfo.mSystemUiVisibility = 0; 1220 mAttachInfo.mHasSystemUiListeners = false; 1221 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1222 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1223 WindowManager.LayoutParams params = mWindowAttributes; 1224 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1225 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1226 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1227 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1228 applyKeepScreenOnFlag(params); 1229 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1230 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1231 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1232 return true; 1233 } 1234 } 1235 return false; 1236 } 1237 1238 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1239 int vis = 0; 1240 // Translucent decor window flags imply stable system ui visibility. 1241 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1242 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1243 } 1244 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1245 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1246 } 1247 return vis; 1248 } 1249 1250 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1251 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1252 int childWidthMeasureSpec; 1253 int childHeightMeasureSpec; 1254 boolean windowSizeMayChange = false; 1255 1256 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(mTag, 1257 "Measuring " + host + " in display " + desiredWindowWidth 1258 + "x" + desiredWindowHeight + "..."); 1259 1260 boolean goodMeasure = false; 1261 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1262 // On large screens, we don't want to allow dialogs to just 1263 // stretch to fill the entire width of the screen to display 1264 // one line of text. First try doing the layout at a smaller 1265 // size to see if it will fit. 1266 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1267 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1268 int baseSize = 0; 1269 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1270 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1271 } 1272 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": baseSize=" + baseSize 1273 + ", desiredWindowWidth=" + desiredWindowWidth); 1274 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1275 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1276 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1277 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1278 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1279 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() 1280 + ") from width spec: " + MeasureSpec.toString(childWidthMeasureSpec) 1281 + " and height spec: " + MeasureSpec.toString(childHeightMeasureSpec)); 1282 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1283 goodMeasure = true; 1284 } else { 1285 // Didn't fit in that size... try expanding a bit. 1286 baseSize = (baseSize+desiredWindowWidth)/2; 1287 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": next baseSize=" 1288 + baseSize); 1289 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1290 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1291 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1292 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1293 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1294 if (DEBUG_DIALOG) Log.v(mTag, "Good!"); 1295 goodMeasure = true; 1296 } 1297 } 1298 } 1299 } 1300 1301 if (!goodMeasure) { 1302 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1303 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1304 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1305 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1306 windowSizeMayChange = true; 1307 } 1308 } 1309 1310 if (DBG) { 1311 System.out.println("======================================"); 1312 System.out.println("performTraversals -- after measure"); 1313 host.debug(); 1314 } 1315 1316 return windowSizeMayChange; 1317 } 1318 1319 /** 1320 * Modifies the input matrix such that it maps view-local coordinates to 1321 * on-screen coordinates. 1322 * 1323 * @param m input matrix to modify 1324 */ 1325 void transformMatrixToGlobal(Matrix m) { 1326 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1327 } 1328 1329 /** 1330 * Modifies the input matrix such that it maps on-screen coordinates to 1331 * view-local coordinates. 1332 * 1333 * @param m input matrix to modify 1334 */ 1335 void transformMatrixToLocal(Matrix m) { 1336 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1337 } 1338 1339 /* package */ WindowInsets getWindowInsets(boolean forceConstruct) { 1340 if (mLastWindowInsets == null || forceConstruct) { 1341 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1342 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1343 Rect contentInsets = mDispatchContentInsets; 1344 Rect stableInsets = mDispatchStableInsets; 1345 // For dispatch we preserve old logic, but for direct requests from Views we allow to 1346 // immediately use pending insets. 1347 if (!forceConstruct 1348 && (!mPendingContentInsets.equals(contentInsets) || 1349 !mPendingStableInsets.equals(stableInsets))) { 1350 contentInsets = mPendingContentInsets; 1351 stableInsets = mPendingStableInsets; 1352 } 1353 Rect outsets = mAttachInfo.mOutsets; 1354 if (outsets.left > 0 || outsets.top > 0 || outsets.right > 0 || outsets.bottom > 0) { 1355 contentInsets = new Rect(contentInsets.left + outsets.left, 1356 contentInsets.top + outsets.top, contentInsets.right + outsets.right, 1357 contentInsets.bottom + outsets.bottom); 1358 } 1359 mLastWindowInsets = new WindowInsets(contentInsets, 1360 null /* windowDecorInsets */, stableInsets, 1361 mContext.getResources().getConfiguration().isScreenRound(), 1362 mAttachInfo.mAlwaysConsumeNavBar); 1363 } 1364 return mLastWindowInsets; 1365 } 1366 1367 void dispatchApplyInsets(View host) { 1368 host.dispatchApplyWindowInsets(getWindowInsets(true /* forceConstruct */)); 1369 } 1370 1371 private static boolean shouldUseDisplaySize(final WindowManager.LayoutParams lp) { 1372 return lp.type == TYPE_STATUS_BAR_PANEL 1373 || lp.type == TYPE_INPUT_METHOD 1374 || lp.type == TYPE_VOLUME_OVERLAY; 1375 } 1376 1377 private int dipToPx(int dip) { 1378 final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics(); 1379 return (int) (displayMetrics.density * dip + 0.5f); 1380 } 1381 1382 private void performTraversals() { 1383 // cache mView since it is used so much below... 1384 final View host = mView; 1385 1386 if (DBG) { 1387 System.out.println("======================================"); 1388 System.out.println("performTraversals"); 1389 host.debug(); 1390 } 1391 1392 if (host == null || !mAdded) 1393 return; 1394 1395 mIsInTraversal = true; 1396 mWillDrawSoon = true; 1397 boolean windowSizeMayChange = false; 1398 boolean newSurface = false; 1399 boolean surfaceChanged = false; 1400 WindowManager.LayoutParams lp = mWindowAttributes; 1401 1402 int desiredWindowWidth; 1403 int desiredWindowHeight; 1404 1405 final int viewVisibility = getHostVisibility(); 1406 final boolean viewVisibilityChanged = !mFirst 1407 && (mViewVisibility != viewVisibility || mNewSurfaceNeeded); 1408 1409 WindowManager.LayoutParams params = null; 1410 if (mWindowAttributesChanged) { 1411 mWindowAttributesChanged = false; 1412 surfaceChanged = true; 1413 params = lp; 1414 } 1415 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1416 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1417 params = lp; 1418 mFullRedrawNeeded = true; 1419 mLayoutRequested = true; 1420 if (mLastInCompatMode) { 1421 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1422 mLastInCompatMode = false; 1423 } else { 1424 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1425 mLastInCompatMode = true; 1426 } 1427 } 1428 1429 mWindowAttributesChangesFlag = 0; 1430 1431 Rect frame = mWinFrame; 1432 if (mFirst) { 1433 mFullRedrawNeeded = true; 1434 mLayoutRequested = true; 1435 1436 if (shouldUseDisplaySize(lp)) { 1437 // NOTE -- system code, won't try to do compat mode. 1438 Point size = new Point(); 1439 mDisplay.getRealSize(size); 1440 desiredWindowWidth = size.x; 1441 desiredWindowHeight = size.y; 1442 } else { 1443 Configuration config = mContext.getResources().getConfiguration(); 1444 desiredWindowWidth = dipToPx(config.screenWidthDp); 1445 desiredWindowHeight = dipToPx(config.screenHeightDp); 1446 } 1447 1448 // We used to use the following condition to choose 32 bits drawing caches: 1449 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1450 // However, windows are now always 32 bits by default, so choose 32 bits 1451 mAttachInfo.mUse32BitDrawingCache = true; 1452 mAttachInfo.mHasWindowFocus = false; 1453 mAttachInfo.mWindowVisibility = viewVisibility; 1454 mAttachInfo.mRecomputeGlobalAttributes = false; 1455 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1456 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1457 // Set the layout direction if it has not been set before (inherit is the default) 1458 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1459 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1460 } 1461 host.dispatchAttachedToWindow(mAttachInfo, 0); 1462 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1463 dispatchApplyInsets(host); 1464 //Log.i(mTag, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1465 1466 } else { 1467 desiredWindowWidth = frame.width(); 1468 desiredWindowHeight = frame.height(); 1469 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1470 if (DEBUG_ORIENTATION) Log.v(mTag, "View " + host + " resized to: " + frame); 1471 mFullRedrawNeeded = true; 1472 mLayoutRequested = true; 1473 windowSizeMayChange = true; 1474 } 1475 } 1476 1477 if (viewVisibilityChanged) { 1478 mAttachInfo.mWindowVisibility = viewVisibility; 1479 host.dispatchWindowVisibilityChanged(viewVisibility); 1480 host.dispatchVisibilityAggregated(viewVisibility == View.VISIBLE); 1481 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1482 endDragResizing(); 1483 destroyHardwareResources(); 1484 } 1485 if (viewVisibility == View.GONE) { 1486 // After making a window gone, we will count it as being 1487 // shown for the first time the next time it gets focus. 1488 mHasHadWindowFocus = false; 1489 } 1490 } 1491 1492 // Non-visible windows can't hold accessibility focus. 1493 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1494 host.clearAccessibilityFocus(); 1495 } 1496 1497 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1498 getRunQueue().executeActions(mAttachInfo.mHandler); 1499 1500 boolean insetsChanged = false; 1501 1502 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1503 if (layoutRequested) { 1504 1505 final Resources res = mView.getContext().getResources(); 1506 1507 if (mFirst) { 1508 // make sure touch mode code executes by setting cached value 1509 // to opposite of the added touch mode. 1510 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1511 ensureTouchModeLocally(mAddedTouchMode); 1512 } else { 1513 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1514 insetsChanged = true; 1515 } 1516 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1517 insetsChanged = true; 1518 } 1519 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1520 insetsChanged = true; 1521 } 1522 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1523 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1524 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1525 + mAttachInfo.mVisibleInsets); 1526 } 1527 if (!mPendingOutsets.equals(mAttachInfo.mOutsets)) { 1528 insetsChanged = true; 1529 } 1530 if (mPendingAlwaysConsumeNavBar != mAttachInfo.mAlwaysConsumeNavBar) { 1531 insetsChanged = true; 1532 } 1533 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1534 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1535 windowSizeMayChange = true; 1536 1537 if (shouldUseDisplaySize(lp)) { 1538 // NOTE -- system code, won't try to do compat mode. 1539 Point size = new Point(); 1540 mDisplay.getRealSize(size); 1541 desiredWindowWidth = size.x; 1542 desiredWindowHeight = size.y; 1543 } else { 1544 Configuration config = res.getConfiguration(); 1545 desiredWindowWidth = dipToPx(config.screenWidthDp); 1546 desiredWindowHeight = dipToPx(config.screenHeightDp); 1547 } 1548 } 1549 } 1550 1551 // Ask host how big it wants to be 1552 windowSizeMayChange |= measureHierarchy(host, lp, res, 1553 desiredWindowWidth, desiredWindowHeight); 1554 } 1555 1556 if (collectViewAttributes()) { 1557 params = lp; 1558 } 1559 if (mAttachInfo.mForceReportNewAttributes) { 1560 mAttachInfo.mForceReportNewAttributes = false; 1561 params = lp; 1562 } 1563 1564 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1565 mAttachInfo.mViewVisibilityChanged = false; 1566 int resizeMode = mSoftInputMode & 1567 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1568 // If we are in auto resize mode, then we need to determine 1569 // what mode to use now. 1570 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1571 final int N = mAttachInfo.mScrollContainers.size(); 1572 for (int i=0; i<N; i++) { 1573 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1574 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1575 } 1576 } 1577 if (resizeMode == 0) { 1578 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1579 } 1580 if ((lp.softInputMode & 1581 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1582 lp.softInputMode = (lp.softInputMode & 1583 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1584 resizeMode; 1585 params = lp; 1586 } 1587 } 1588 } 1589 1590 if (params != null) { 1591 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1592 if (!PixelFormat.formatHasAlpha(params.format)) { 1593 params.format = PixelFormat.TRANSLUCENT; 1594 } 1595 } 1596 mAttachInfo.mOverscanRequested = (params.flags 1597 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1598 } 1599 1600 if (mApplyInsetsRequested) { 1601 mApplyInsetsRequested = false; 1602 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1603 dispatchApplyInsets(host); 1604 if (mLayoutRequested) { 1605 // Short-circuit catching a new layout request here, so 1606 // we don't need to go through two layout passes when things 1607 // change due to fitting system windows, which can happen a lot. 1608 windowSizeMayChange |= measureHierarchy(host, lp, 1609 mView.getContext().getResources(), 1610 desiredWindowWidth, desiredWindowHeight); 1611 } 1612 } 1613 1614 if (layoutRequested) { 1615 // Clear this now, so that if anything requests a layout in the 1616 // rest of this function we will catch it and re-run a full 1617 // layout pass. 1618 mLayoutRequested = false; 1619 } 1620 1621 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1622 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1623 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1624 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1625 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1626 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1627 windowShouldResize |= mDragResizing && mResizeMode == RESIZE_MODE_FREEFORM; 1628 1629 // If the activity was just relaunched, it might have unfrozen the task bounds (while 1630 // relaunching), so we need to force a call into window manager to pick up the latest 1631 // bounds. 1632 windowShouldResize |= mActivityRelaunched; 1633 1634 // Determine whether to compute insets. 1635 // If there are no inset listeners remaining then we may still need to compute 1636 // insets in case the old insets were non-empty and must be reset. 1637 final boolean computesInternalInsets = 1638 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1639 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1640 1641 boolean insetsPending = false; 1642 int relayoutResult = 0; 1643 1644 final boolean isViewVisible = viewVisibility == View.VISIBLE; 1645 if (mFirst || windowShouldResize || insetsChanged || 1646 viewVisibilityChanged || params != null || mForceNextWindowRelayout) { 1647 mForceNextWindowRelayout = false; 1648 1649 if (isViewVisible) { 1650 // If this window is giving internal insets to the window 1651 // manager, and it is being added or changing its visibility, 1652 // then we want to first give the window manager "fake" 1653 // insets to cause it to effectively ignore the content of 1654 // the window during layout. This avoids it briefly causing 1655 // other windows to resize/move based on the raw frame of the 1656 // window, waiting until we can finish laying out this window 1657 // and get back to the window manager with the ultimately 1658 // computed insets. 1659 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1660 } 1661 1662 if (mSurfaceHolder != null) { 1663 mSurfaceHolder.mSurfaceLock.lock(); 1664 mDrawingAllowed = true; 1665 } 1666 1667 boolean hwInitialized = false; 1668 boolean contentInsetsChanged = false; 1669 boolean hadSurface = mSurface.isValid(); 1670 1671 try { 1672 if (DEBUG_LAYOUT) { 1673 Log.i(mTag, "host=w:" + host.getMeasuredWidth() + ", h:" + 1674 host.getMeasuredHeight() + ", params=" + params); 1675 } 1676 1677 if (mAttachInfo.mHardwareRenderer != null) { 1678 // relayoutWindow may decide to destroy mSurface. As that decision 1679 // happens in WindowManager service, we need to be defensive here 1680 // and stop using the surface in case it gets destroyed. 1681 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1682 // Animations were running so we need to push a frame 1683 // to resume them 1684 mDirty.set(0, 0, mWidth, mHeight); 1685 } 1686 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1687 } 1688 final int surfaceGenerationId = mSurface.getGenerationId(); 1689 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1690 1691 if (DEBUG_LAYOUT) Log.v(mTag, "relayout: frame=" + frame.toShortString() 1692 + " overscan=" + mPendingOverscanInsets.toShortString() 1693 + " content=" + mPendingContentInsets.toShortString() 1694 + " visible=" + mPendingVisibleInsets.toShortString() 1695 + " visible=" + mPendingStableInsets.toShortString() 1696 + " outsets=" + mPendingOutsets.toShortString() 1697 + " surface=" + mSurface); 1698 1699 if (mPendingConfiguration.seq != 0) { 1700 if (DEBUG_CONFIGURATION) Log.v(mTag, "Visible with new config: " 1701 + mPendingConfiguration); 1702 updateConfiguration(new Configuration(mPendingConfiguration), !mFirst); 1703 mPendingConfiguration.seq = 0; 1704 } 1705 1706 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1707 mAttachInfo.mOverscanInsets); 1708 contentInsetsChanged = !mPendingContentInsets.equals( 1709 mAttachInfo.mContentInsets); 1710 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1711 mAttachInfo.mVisibleInsets); 1712 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1713 mAttachInfo.mStableInsets); 1714 final boolean outsetsChanged = !mPendingOutsets.equals(mAttachInfo.mOutsets); 1715 final boolean surfaceSizeChanged = (relayoutResult 1716 & WindowManagerGlobal.RELAYOUT_RES_SURFACE_RESIZED) != 0; 1717 final boolean alwaysConsumeNavBarChanged = 1718 mPendingAlwaysConsumeNavBar != mAttachInfo.mAlwaysConsumeNavBar; 1719 if (contentInsetsChanged) { 1720 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1721 if (DEBUG_LAYOUT) Log.v(mTag, "Content insets changing to: " 1722 + mAttachInfo.mContentInsets); 1723 } 1724 if (overscanInsetsChanged) { 1725 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1726 if (DEBUG_LAYOUT) Log.v(mTag, "Overscan insets changing to: " 1727 + mAttachInfo.mOverscanInsets); 1728 // Need to relayout with content insets. 1729 contentInsetsChanged = true; 1730 } 1731 if (stableInsetsChanged) { 1732 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1733 if (DEBUG_LAYOUT) Log.v(mTag, "Decor insets changing to: " 1734 + mAttachInfo.mStableInsets); 1735 // Need to relayout with content insets. 1736 contentInsetsChanged = true; 1737 } 1738 if (alwaysConsumeNavBarChanged) { 1739 mAttachInfo.mAlwaysConsumeNavBar = mPendingAlwaysConsumeNavBar; 1740 contentInsetsChanged = true; 1741 } 1742 if (contentInsetsChanged || mLastSystemUiVisibility != 1743 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1744 || mLastOverscanRequested != mAttachInfo.mOverscanRequested 1745 || outsetsChanged) { 1746 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1747 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1748 mAttachInfo.mOutsets.set(mPendingOutsets); 1749 mApplyInsetsRequested = false; 1750 dispatchApplyInsets(host); 1751 } 1752 if (visibleInsetsChanged) { 1753 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1754 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1755 + mAttachInfo.mVisibleInsets); 1756 } 1757 1758 if (!hadSurface) { 1759 if (mSurface.isValid()) { 1760 // If we are creating a new surface, then we need to 1761 // completely redraw it. Also, when we get to the 1762 // point of drawing it we will hold off and schedule 1763 // a new traversal instead. This is so we can tell the 1764 // window manager about all of the windows being displayed 1765 // before actually drawing them, so it can display then 1766 // all at once. 1767 newSurface = true; 1768 mFullRedrawNeeded = true; 1769 mPreviousTransparentRegion.setEmpty(); 1770 1771 // Only initialize up-front if transparent regions are not 1772 // requested, otherwise defer to see if the entire window 1773 // will be transparent 1774 if (mAttachInfo.mHardwareRenderer != null) { 1775 try { 1776 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1777 mSurface); 1778 if (hwInitialized && (host.mPrivateFlags 1779 & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) == 0) { 1780 // Don't pre-allocate if transparent regions 1781 // are requested as they may not be needed 1782 mSurface.allocateBuffers(); 1783 } 1784 } catch (OutOfResourcesException e) { 1785 handleOutOfResourcesException(e); 1786 return; 1787 } 1788 } 1789 } 1790 } else if (!mSurface.isValid()) { 1791 // If the surface has been removed, then reset the scroll 1792 // positions. 1793 if (mLastScrolledFocus != null) { 1794 mLastScrolledFocus.clear(); 1795 } 1796 mScrollY = mCurScrollY = 0; 1797 if (mView instanceof RootViewSurfaceTaker) { 1798 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1799 } 1800 if (mScroller != null) { 1801 mScroller.abortAnimation(); 1802 } 1803 // Our surface is gone 1804 if (mAttachInfo.mHardwareRenderer != null && 1805 mAttachInfo.mHardwareRenderer.isEnabled()) { 1806 mAttachInfo.mHardwareRenderer.destroy(); 1807 } 1808 } else if ((surfaceGenerationId != mSurface.getGenerationId() 1809 || surfaceSizeChanged) 1810 && mSurfaceHolder == null 1811 && mAttachInfo.mHardwareRenderer != null) { 1812 mFullRedrawNeeded = true; 1813 try { 1814 // Need to do updateSurface (which leads to CanvasContext::setSurface and 1815 // re-create the EGLSurface) if either the Surface changed (as indicated by 1816 // generation id), or WindowManager changed the surface size. The latter is 1817 // because on some chips, changing the consumer side's BufferQueue size may 1818 // not take effect immediately unless we create a new EGLSurface. 1819 // Note that frame size change doesn't always imply surface size change (eg. 1820 // drag resizing uses fullscreen surface), need to check surfaceSizeChanged 1821 // flag from WindowManager. 1822 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1823 } catch (OutOfResourcesException e) { 1824 handleOutOfResourcesException(e); 1825 return; 1826 } 1827 } 1828 1829 final boolean freeformResizing = (relayoutResult 1830 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_FREEFORM) != 0; 1831 final boolean dockedResizing = (relayoutResult 1832 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_DOCKED) != 0; 1833 final boolean dragResizing = freeformResizing || dockedResizing; 1834 if (mDragResizing != dragResizing) { 1835 if (dragResizing) { 1836 mResizeMode = freeformResizing 1837 ? RESIZE_MODE_FREEFORM 1838 : RESIZE_MODE_DOCKED_DIVIDER; 1839 startDragResizing(mPendingBackDropFrame, 1840 mWinFrame.equals(mPendingBackDropFrame), mPendingVisibleInsets, 1841 mPendingStableInsets, mResizeMode); 1842 } else { 1843 // We shouldn't come here, but if we come we should end the resize. 1844 endDragResizing(); 1845 } 1846 } 1847 if (!USE_MT_RENDERER) { 1848 if (dragResizing) { 1849 mCanvasOffsetX = mWinFrame.left; 1850 mCanvasOffsetY = mWinFrame.top; 1851 } else { 1852 mCanvasOffsetX = mCanvasOffsetY = 0; 1853 } 1854 } 1855 } catch (RemoteException e) { 1856 } 1857 1858 if (DEBUG_ORIENTATION) Log.v( 1859 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1860 1861 mAttachInfo.mWindowLeft = frame.left; 1862 mAttachInfo.mWindowTop = frame.top; 1863 1864 // !!FIXME!! This next section handles the case where we did not get the 1865 // window size we asked for. We should avoid this by getting a maximum size from 1866 // the window session beforehand. 1867 if (mWidth != frame.width() || mHeight != frame.height()) { 1868 mWidth = frame.width(); 1869 mHeight = frame.height(); 1870 } 1871 1872 if (mSurfaceHolder != null) { 1873 // The app owns the surface; tell it about what is going on. 1874 if (mSurface.isValid()) { 1875 // XXX .copyFrom() doesn't work! 1876 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1877 mSurfaceHolder.mSurface = mSurface; 1878 } 1879 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1880 mSurfaceHolder.mSurfaceLock.unlock(); 1881 if (mSurface.isValid()) { 1882 if (!hadSurface) { 1883 mSurfaceHolder.ungetCallbacks(); 1884 1885 mIsCreating = true; 1886 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1887 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1888 if (callbacks != null) { 1889 for (SurfaceHolder.Callback c : callbacks) { 1890 c.surfaceCreated(mSurfaceHolder); 1891 } 1892 } 1893 surfaceChanged = true; 1894 } 1895 if (surfaceChanged) { 1896 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1897 lp.format, mWidth, mHeight); 1898 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1899 if (callbacks != null) { 1900 for (SurfaceHolder.Callback c : callbacks) { 1901 c.surfaceChanged(mSurfaceHolder, lp.format, 1902 mWidth, mHeight); 1903 } 1904 } 1905 } 1906 mIsCreating = false; 1907 } else if (hadSurface) { 1908 mSurfaceHolder.ungetCallbacks(); 1909 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1910 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1911 if (callbacks != null) { 1912 for (SurfaceHolder.Callback c : callbacks) { 1913 c.surfaceDestroyed(mSurfaceHolder); 1914 } 1915 } 1916 mSurfaceHolder.mSurfaceLock.lock(); 1917 try { 1918 mSurfaceHolder.mSurface = new Surface(); 1919 } finally { 1920 mSurfaceHolder.mSurfaceLock.unlock(); 1921 } 1922 } 1923 } 1924 1925 final ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 1926 if (hardwareRenderer != null && hardwareRenderer.isEnabled()) { 1927 if (hwInitialized 1928 || mWidth != hardwareRenderer.getWidth() 1929 || mHeight != hardwareRenderer.getHeight()) { 1930 hardwareRenderer.setup(mWidth, mHeight, mAttachInfo, 1931 mWindowAttributes.surfaceInsets); 1932 } 1933 } 1934 1935 if (!mStopped || mReportNextDraw) { 1936 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1937 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1938 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1939 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1940 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1941 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1942 1943 if (DEBUG_LAYOUT) Log.v(mTag, "Ooops, something changed! mWidth=" 1944 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1945 + " mHeight=" + mHeight 1946 + " measuredHeight=" + host.getMeasuredHeight() 1947 + " coveredInsetsChanged=" + contentInsetsChanged); 1948 1949 // Ask host how big it wants to be 1950 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1951 1952 // Implementation of weights from WindowManager.LayoutParams 1953 // We just grow the dimensions as needed and re-measure if 1954 // needs be 1955 int width = host.getMeasuredWidth(); 1956 int height = host.getMeasuredHeight(); 1957 boolean measureAgain = false; 1958 1959 if (lp.horizontalWeight > 0.0f) { 1960 width += (int) ((mWidth - width) * lp.horizontalWeight); 1961 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1962 MeasureSpec.EXACTLY); 1963 measureAgain = true; 1964 } 1965 if (lp.verticalWeight > 0.0f) { 1966 height += (int) ((mHeight - height) * lp.verticalWeight); 1967 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1968 MeasureSpec.EXACTLY); 1969 measureAgain = true; 1970 } 1971 1972 if (measureAgain) { 1973 if (DEBUG_LAYOUT) Log.v(mTag, 1974 "And hey let's measure once more: width=" + width 1975 + " height=" + height); 1976 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1977 } 1978 1979 layoutRequested = true; 1980 } 1981 } 1982 } else { 1983 // Not the first pass and no window/insets/visibility change but the window 1984 // may have moved and we need check that and if so to update the left and right 1985 // in the attach info. We translate only the window frame since on window move 1986 // the window manager tells us only for the new frame but the insets are the 1987 // same and we do not want to translate them more than once. 1988 maybeHandleWindowMove(frame); 1989 } 1990 1991 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 1992 boolean triggerGlobalLayoutListener = didLayout 1993 || mAttachInfo.mRecomputeGlobalAttributes; 1994 if (didLayout) { 1995 performLayout(lp, mWidth, mHeight); 1996 1997 // By this point all views have been sized and positioned 1998 // We can compute the transparent area 1999 2000 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 2001 // start out transparent 2002 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 2003 host.getLocationInWindow(mTmpLocation); 2004 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 2005 mTmpLocation[0] + host.mRight - host.mLeft, 2006 mTmpLocation[1] + host.mBottom - host.mTop); 2007 2008 host.gatherTransparentRegion(mTransparentRegion); 2009 if (mTranslator != null) { 2010 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 2011 } 2012 2013 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 2014 mPreviousTransparentRegion.set(mTransparentRegion); 2015 mFullRedrawNeeded = true; 2016 // reconfigure window manager 2017 try { 2018 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 2019 } catch (RemoteException e) { 2020 } 2021 } 2022 } 2023 2024 if (DBG) { 2025 System.out.println("======================================"); 2026 System.out.println("performTraversals -- after setFrame"); 2027 host.debug(); 2028 } 2029 } 2030 2031 if (triggerGlobalLayoutListener) { 2032 mAttachInfo.mRecomputeGlobalAttributes = false; 2033 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 2034 } 2035 2036 if (computesInternalInsets) { 2037 // Clear the original insets. 2038 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 2039 insets.reset(); 2040 2041 // Compute new insets in place. 2042 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 2043 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 2044 2045 // Tell the window manager. 2046 if (insetsPending || !mLastGivenInsets.equals(insets)) { 2047 mLastGivenInsets.set(insets); 2048 2049 // Translate insets to screen coordinates if needed. 2050 final Rect contentInsets; 2051 final Rect visibleInsets; 2052 final Region touchableRegion; 2053 if (mTranslator != null) { 2054 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 2055 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 2056 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 2057 } else { 2058 contentInsets = insets.contentInsets; 2059 visibleInsets = insets.visibleInsets; 2060 touchableRegion = insets.touchableRegion; 2061 } 2062 2063 try { 2064 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 2065 contentInsets, visibleInsets, touchableRegion); 2066 } catch (RemoteException e) { 2067 } 2068 } 2069 } 2070 2071 if (mFirst) { 2072 // handle first focus request 2073 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: mView.hasFocus()=" 2074 + mView.hasFocus()); 2075 if (mView != null) { 2076 if (!mView.hasFocus()) { 2077 mView.requestFocus(View.FOCUS_FORWARD); 2078 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: requested focused view=" 2079 + mView.findFocus()); 2080 } else { 2081 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: existing focused view=" 2082 + mView.findFocus()); 2083 } 2084 } 2085 } 2086 2087 final boolean changedVisibility = (viewVisibilityChanged || mFirst) && isViewVisible; 2088 final boolean hasWindowFocus = mAttachInfo.mHasWindowFocus && isViewVisible; 2089 final boolean regainedFocus = hasWindowFocus && mLostWindowFocus; 2090 if (regainedFocus) { 2091 mLostWindowFocus = false; 2092 } else if (!hasWindowFocus && mHadWindowFocus) { 2093 mLostWindowFocus = true; 2094 } 2095 2096 if (changedVisibility || regainedFocus) { 2097 host.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2098 } 2099 2100 mFirst = false; 2101 mWillDrawSoon = false; 2102 mNewSurfaceNeeded = false; 2103 mActivityRelaunched = false; 2104 mViewVisibility = viewVisibility; 2105 mHadWindowFocus = hasWindowFocus; 2106 2107 if (hasWindowFocus && !isInLocalFocusMode()) { 2108 final boolean imTarget = WindowManager.LayoutParams 2109 .mayUseInputMethod(mWindowAttributes.flags); 2110 if (imTarget != mLastWasImTarget) { 2111 mLastWasImTarget = imTarget; 2112 InputMethodManager imm = InputMethodManager.peekInstance(); 2113 if (imm != null && imTarget) { 2114 imm.onPreWindowFocus(mView, hasWindowFocus); 2115 imm.onPostWindowFocus(mView, mView.findFocus(), 2116 mWindowAttributes.softInputMode, 2117 !mHasHadWindowFocus, mWindowAttributes.flags); 2118 } 2119 } 2120 } 2121 2122 // Remember if we must report the next draw. 2123 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 2124 mReportNextDraw = true; 2125 } 2126 2127 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || !isViewVisible; 2128 2129 if (!cancelDraw) { 2130 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2131 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2132 mPendingTransitions.get(i).startChangingAnimations(); 2133 } 2134 mPendingTransitions.clear(); 2135 } 2136 2137 performDraw(); 2138 } else { 2139 if (isViewVisible) { 2140 // Try again 2141 scheduleTraversals(); 2142 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2143 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2144 mPendingTransitions.get(i).endChangingAnimations(); 2145 } 2146 mPendingTransitions.clear(); 2147 } 2148 } 2149 2150 mIsInTraversal = false; 2151 } 2152 2153 private void maybeHandleWindowMove(Rect frame) { 2154 2155 // TODO: Well, we are checking whether the frame has changed similarly 2156 // to how this is done for the insets. This is however incorrect since 2157 // the insets and the frame are translated. For example, the old frame 2158 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 2159 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 2160 // true since we are comparing a not translated value to a translated one. 2161 // This scenario is rare but we may want to fix that. 2162 2163 final boolean windowMoved = mAttachInfo.mWindowLeft != frame.left 2164 || mAttachInfo.mWindowTop != frame.top; 2165 if (windowMoved) { 2166 if (mTranslator != null) { 2167 mTranslator.translateRectInScreenToAppWinFrame(frame); 2168 } 2169 mAttachInfo.mWindowLeft = frame.left; 2170 mAttachInfo.mWindowTop = frame.top; 2171 2172 // Update the light position for the new window offsets. 2173 if (mAttachInfo.mHardwareRenderer != null) { 2174 mAttachInfo.mHardwareRenderer.setLightCenter(mAttachInfo); 2175 } 2176 } 2177 } 2178 2179 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2180 Log.e(mTag, "OutOfResourcesException initializing HW surface", e); 2181 try { 2182 if (!mWindowSession.outOfMemory(mWindow) && 2183 Process.myUid() != Process.SYSTEM_UID) { 2184 Slog.w(mTag, "No processes killed for memory; killing self"); 2185 Process.killProcess(Process.myPid()); 2186 } 2187 } catch (RemoteException ex) { 2188 } 2189 mLayoutRequested = true; // ask wm for a new surface next time. 2190 } 2191 2192 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2193 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2194 try { 2195 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2196 } finally { 2197 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2198 } 2199 } 2200 2201 /** 2202 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2203 * is currently undergoing a layout pass. 2204 * 2205 * @return whether the view hierarchy is currently undergoing a layout pass 2206 */ 2207 boolean isInLayout() { 2208 return mInLayout; 2209 } 2210 2211 /** 2212 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2213 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2214 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2215 * all children in that container hierarchy are measured and laid out at the end of the layout 2216 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2217 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2218 * we check all of those views to see if any still have pending layout requests, which 2219 * indicates that they were not correctly handled by their container hierarchy. If that is 2220 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2221 * to blank containers, and force a second request/measure/layout pass in this frame. If 2222 * more requestLayout() calls are received during that second layout pass, we post those 2223 * requests to the next frame to avoid possible infinite loops. 2224 * 2225 * <p>The return value from this method indicates whether the request should proceed 2226 * (if it is a request during the first layout pass) or should be skipped and posted to the 2227 * next frame (if it is a request during the second layout pass).</p> 2228 * 2229 * @param view the view that requested the layout. 2230 * 2231 * @return true if request should proceed, false otherwise. 2232 */ 2233 boolean requestLayoutDuringLayout(final View view) { 2234 if (view.mParent == null || view.mAttachInfo == null) { 2235 // Would not normally trigger another layout, so just let it pass through as usual 2236 return true; 2237 } 2238 if (!mLayoutRequesters.contains(view)) { 2239 mLayoutRequesters.add(view); 2240 } 2241 if (!mHandlingLayoutInLayoutRequest) { 2242 // Let the request proceed normally; it will be processed in a second layout pass 2243 // if necessary 2244 return true; 2245 } else { 2246 // Don't let the request proceed during the second layout pass. 2247 // It will post to the next frame instead. 2248 return false; 2249 } 2250 } 2251 2252 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2253 int desiredWindowHeight) { 2254 mLayoutRequested = false; 2255 mScrollMayChange = true; 2256 mInLayout = true; 2257 2258 final View host = mView; 2259 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2260 Log.v(mTag, "Laying out " + host + " to (" + 2261 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2262 } 2263 2264 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2265 try { 2266 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2267 2268 mInLayout = false; 2269 int numViewsRequestingLayout = mLayoutRequesters.size(); 2270 if (numViewsRequestingLayout > 0) { 2271 // requestLayout() was called during layout. 2272 // If no layout-request flags are set on the requesting views, there is no problem. 2273 // If some requests are still pending, then we need to clear those flags and do 2274 // a full request/measure/layout pass to handle this situation. 2275 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2276 false); 2277 if (validLayoutRequesters != null) { 2278 // Set this flag to indicate that any further requests are happening during 2279 // the second pass, which may result in posting those requests to the next 2280 // frame instead 2281 mHandlingLayoutInLayoutRequest = true; 2282 2283 // Process fresh layout requests, then measure and layout 2284 int numValidRequests = validLayoutRequesters.size(); 2285 for (int i = 0; i < numValidRequests; ++i) { 2286 final View view = validLayoutRequesters.get(i); 2287 Log.w("View", "requestLayout() improperly called by " + view + 2288 " during layout: running second layout pass"); 2289 view.requestLayout(); 2290 } 2291 measureHierarchy(host, lp, mView.getContext().getResources(), 2292 desiredWindowWidth, desiredWindowHeight); 2293 mInLayout = true; 2294 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2295 2296 mHandlingLayoutInLayoutRequest = false; 2297 2298 // Check the valid requests again, this time without checking/clearing the 2299 // layout flags, since requests happening during the second pass get noop'd 2300 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2301 if (validLayoutRequesters != null) { 2302 final ArrayList<View> finalRequesters = validLayoutRequesters; 2303 // Post second-pass requests to the next frame 2304 getRunQueue().post(new Runnable() { 2305 @Override 2306 public void run() { 2307 int numValidRequests = finalRequesters.size(); 2308 for (int i = 0; i < numValidRequests; ++i) { 2309 final View view = finalRequesters.get(i); 2310 Log.w("View", "requestLayout() improperly called by " + view + 2311 " during second layout pass: posting in next frame"); 2312 view.requestLayout(); 2313 } 2314 } 2315 }); 2316 } 2317 } 2318 2319 } 2320 } finally { 2321 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2322 } 2323 mInLayout = false; 2324 } 2325 2326 /** 2327 * This method is called during layout when there have been calls to requestLayout() during 2328 * layout. It walks through the list of views that requested layout to determine which ones 2329 * still need it, based on visibility in the hierarchy and whether they have already been 2330 * handled (as is usually the case with ListView children). 2331 * 2332 * @param layoutRequesters The list of views that requested layout during layout 2333 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2334 * If so, the FORCE_LAYOUT flag was not set on requesters. 2335 * @return A list of the actual views that still need to be laid out. 2336 */ 2337 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2338 boolean secondLayoutRequests) { 2339 2340 int numViewsRequestingLayout = layoutRequesters.size(); 2341 ArrayList<View> validLayoutRequesters = null; 2342 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2343 View view = layoutRequesters.get(i); 2344 if (view != null && view.mAttachInfo != null && view.mParent != null && 2345 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2346 View.PFLAG_FORCE_LAYOUT)) { 2347 boolean gone = false; 2348 View parent = view; 2349 // Only trigger new requests for views in a non-GONE hierarchy 2350 while (parent != null) { 2351 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2352 gone = true; 2353 break; 2354 } 2355 if (parent.mParent instanceof View) { 2356 parent = (View) parent.mParent; 2357 } else { 2358 parent = null; 2359 } 2360 } 2361 if (!gone) { 2362 if (validLayoutRequesters == null) { 2363 validLayoutRequesters = new ArrayList<View>(); 2364 } 2365 validLayoutRequesters.add(view); 2366 } 2367 } 2368 } 2369 if (!secondLayoutRequests) { 2370 // If we're checking the layout flags, then we need to clean them up also 2371 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2372 View view = layoutRequesters.get(i); 2373 while (view != null && 2374 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2375 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2376 if (view.mParent instanceof View) { 2377 view = (View) view.mParent; 2378 } else { 2379 view = null; 2380 } 2381 } 2382 } 2383 } 2384 layoutRequesters.clear(); 2385 return validLayoutRequesters; 2386 } 2387 2388 @Override 2389 public void requestTransparentRegion(View child) { 2390 // the test below should not fail unless someone is messing with us 2391 checkThread(); 2392 if (mView == child) { 2393 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2394 // Need to make sure we re-evaluate the window attributes next 2395 // time around, to ensure the window has the correct format. 2396 mWindowAttributesChanged = true; 2397 mWindowAttributesChangesFlag = 0; 2398 requestLayout(); 2399 } 2400 } 2401 2402 /** 2403 * Figures out the measure spec for the root view in a window based on it's 2404 * layout params. 2405 * 2406 * @param windowSize 2407 * The available width or height of the window 2408 * 2409 * @param rootDimension 2410 * The layout params for one dimension (width or height) of the 2411 * window. 2412 * 2413 * @return The measure spec to use to measure the root view. 2414 */ 2415 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2416 int measureSpec; 2417 switch (rootDimension) { 2418 2419 case ViewGroup.LayoutParams.MATCH_PARENT: 2420 // Window can't resize. Force root view to be windowSize. 2421 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2422 break; 2423 case ViewGroup.LayoutParams.WRAP_CONTENT: 2424 // Window can resize. Set max size for root view. 2425 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2426 break; 2427 default: 2428 // Window wants to be an exact size. Force root view to be that size. 2429 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2430 break; 2431 } 2432 return measureSpec; 2433 } 2434 2435 int mHardwareXOffset; 2436 int mHardwareYOffset; 2437 2438 @Override 2439 public void onHardwarePreDraw(DisplayListCanvas canvas) { 2440 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2441 } 2442 2443 @Override 2444 public void onHardwarePostDraw(DisplayListCanvas canvas) { 2445 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2446 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 2447 mWindowCallbacks.get(i).onPostDraw(canvas); 2448 } 2449 } 2450 2451 /** 2452 * @hide 2453 */ 2454 void outputDisplayList(View view) { 2455 view.mRenderNode.output(); 2456 if (mAttachInfo.mHardwareRenderer != null) { 2457 ((ThreadedRenderer)mAttachInfo.mHardwareRenderer).serializeDisplayListTree(); 2458 } 2459 } 2460 2461 /** 2462 * @see #PROPERTY_PROFILE_RENDERING 2463 */ 2464 private void profileRendering(boolean enabled) { 2465 if (mProfileRendering) { 2466 mRenderProfilingEnabled = enabled; 2467 2468 if (mRenderProfiler != null) { 2469 mChoreographer.removeFrameCallback(mRenderProfiler); 2470 } 2471 if (mRenderProfilingEnabled) { 2472 if (mRenderProfiler == null) { 2473 mRenderProfiler = new Choreographer.FrameCallback() { 2474 @Override 2475 public void doFrame(long frameTimeNanos) { 2476 mDirty.set(0, 0, mWidth, mHeight); 2477 scheduleTraversals(); 2478 if (mRenderProfilingEnabled) { 2479 mChoreographer.postFrameCallback(mRenderProfiler); 2480 } 2481 } 2482 }; 2483 } 2484 mChoreographer.postFrameCallback(mRenderProfiler); 2485 } else { 2486 mRenderProfiler = null; 2487 } 2488 } 2489 } 2490 2491 /** 2492 * Called from draw() when DEBUG_FPS is enabled 2493 */ 2494 private void trackFPS() { 2495 // Tracks frames per second drawn. First value in a series of draws may be bogus 2496 // because it down not account for the intervening idle time 2497 long nowTime = System.currentTimeMillis(); 2498 if (mFpsStartTime < 0) { 2499 mFpsStartTime = mFpsPrevTime = nowTime; 2500 mFpsNumFrames = 0; 2501 } else { 2502 ++mFpsNumFrames; 2503 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2504 long frameTime = nowTime - mFpsPrevTime; 2505 long totalTime = nowTime - mFpsStartTime; 2506 Log.v(mTag, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2507 mFpsPrevTime = nowTime; 2508 if (totalTime > 1000) { 2509 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2510 Log.v(mTag, "0x" + thisHash + "\tFPS:\t" + fps); 2511 mFpsStartTime = nowTime; 2512 mFpsNumFrames = 0; 2513 } 2514 } 2515 } 2516 2517 private void performDraw() { 2518 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2519 return; 2520 } 2521 2522 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2523 mFullRedrawNeeded = false; 2524 2525 mIsDrawing = true; 2526 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2527 try { 2528 draw(fullRedrawNeeded); 2529 } finally { 2530 mIsDrawing = false; 2531 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2532 } 2533 2534 // For whatever reason we didn't create a HardwareRenderer, end any 2535 // hardware animations that are now dangling 2536 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2537 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2538 for (int i = 0; i < count; i++) { 2539 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2540 } 2541 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2542 } 2543 2544 if (mReportNextDraw) { 2545 mReportNextDraw = false; 2546 2547 // if we're using multi-thread renderer, wait for the window frame draws 2548 if (mWindowDrawCountDown != null) { 2549 try { 2550 mWindowDrawCountDown.await(); 2551 } catch (InterruptedException e) { 2552 Log.e(mTag, "Window redraw count down interruped!"); 2553 } 2554 mWindowDrawCountDown = null; 2555 } 2556 2557 if (mAttachInfo.mHardwareRenderer != null) { 2558 mAttachInfo.mHardwareRenderer.fence(); 2559 } 2560 2561 if (LOCAL_LOGV) { 2562 Log.v(mTag, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2563 } 2564 if (mSurfaceHolder != null && mSurface.isValid()) { 2565 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2566 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2567 if (callbacks != null) { 2568 for (SurfaceHolder.Callback c : callbacks) { 2569 if (c instanceof SurfaceHolder.Callback2) { 2570 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded(mSurfaceHolder); 2571 } 2572 } 2573 } 2574 } 2575 try { 2576 mWindowSession.finishDrawing(mWindow); 2577 } catch (RemoteException e) { 2578 } 2579 } 2580 } 2581 2582 private void draw(boolean fullRedrawNeeded) { 2583 Surface surface = mSurface; 2584 if (!surface.isValid()) { 2585 return; 2586 } 2587 2588 if (DEBUG_FPS) { 2589 trackFPS(); 2590 } 2591 2592 if (!sFirstDrawComplete) { 2593 synchronized (sFirstDrawHandlers) { 2594 sFirstDrawComplete = true; 2595 final int count = sFirstDrawHandlers.size(); 2596 for (int i = 0; i< count; i++) { 2597 mHandler.post(sFirstDrawHandlers.get(i)); 2598 } 2599 } 2600 } 2601 2602 scrollToRectOrFocus(null, false); 2603 2604 if (mAttachInfo.mViewScrollChanged) { 2605 mAttachInfo.mViewScrollChanged = false; 2606 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2607 } 2608 2609 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2610 final int curScrollY; 2611 if (animating) { 2612 curScrollY = mScroller.getCurrY(); 2613 } else { 2614 curScrollY = mScrollY; 2615 } 2616 if (mCurScrollY != curScrollY) { 2617 mCurScrollY = curScrollY; 2618 fullRedrawNeeded = true; 2619 if (mView instanceof RootViewSurfaceTaker) { 2620 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2621 } 2622 } 2623 2624 final float appScale = mAttachInfo.mApplicationScale; 2625 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2626 2627 int resizeAlpha = 0; 2628 2629 final Rect dirty = mDirty; 2630 if (mSurfaceHolder != null) { 2631 // The app owns the surface, we won't draw. 2632 dirty.setEmpty(); 2633 if (animating && mScroller != null) { 2634 mScroller.abortAnimation(); 2635 } 2636 return; 2637 } 2638 2639 if (fullRedrawNeeded) { 2640 mAttachInfo.mIgnoreDirtyState = true; 2641 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2642 } 2643 2644 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2645 Log.v(mTag, "Draw " + mView + "/" 2646 + mWindowAttributes.getTitle() 2647 + ": dirty={" + dirty.left + "," + dirty.top 2648 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2649 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2650 appScale + ", width=" + mWidth + ", height=" + mHeight); 2651 } 2652 2653 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2654 2655 int xOffset = -mCanvasOffsetX; 2656 int yOffset = -mCanvasOffsetY + curScrollY; 2657 final WindowManager.LayoutParams params = mWindowAttributes; 2658 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2659 if (surfaceInsets != null) { 2660 xOffset -= surfaceInsets.left; 2661 yOffset -= surfaceInsets.top; 2662 2663 // Offset dirty rect for surface insets. 2664 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2665 } 2666 2667 boolean accessibilityFocusDirty = false; 2668 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2669 if (drawable != null) { 2670 final Rect bounds = mAttachInfo.mTmpInvalRect; 2671 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2672 if (!hasFocus) { 2673 bounds.setEmpty(); 2674 } 2675 if (!bounds.equals(drawable.getBounds())) { 2676 accessibilityFocusDirty = true; 2677 } 2678 } 2679 2680 mAttachInfo.mDrawingTime = 2681 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2682 2683 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2684 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2685 // If accessibility focus moved, always invalidate the root. 2686 boolean invalidateRoot = accessibilityFocusDirty || mInvalidateRootRequested; 2687 mInvalidateRootRequested = false; 2688 2689 // Draw with hardware renderer. 2690 mIsAnimating = false; 2691 2692 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2693 mHardwareYOffset = yOffset; 2694 mHardwareXOffset = xOffset; 2695 invalidateRoot = true; 2696 } 2697 2698 if (invalidateRoot) { 2699 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2700 } 2701 2702 dirty.setEmpty(); 2703 2704 // Stage the content drawn size now. It will be transferred to the renderer 2705 // shortly before the draw commands get send to the renderer. 2706 final boolean updated = updateContentDrawBounds(); 2707 2708 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2709 2710 if (updated) { 2711 requestDrawWindow(); 2712 } 2713 } else { 2714 // If we get here with a disabled & requested hardware renderer, something went 2715 // wrong (an invalidate posted right before we destroyed the hardware surface 2716 // for instance) so we should just bail out. Locking the surface with software 2717 // rendering at this point would lock it forever and prevent hardware renderer 2718 // from doing its job when it comes back. 2719 // Before we request a new frame we must however attempt to reinitiliaze the 2720 // hardware renderer if it's in requested state. This would happen after an 2721 // eglTerminate() for instance. 2722 if (mAttachInfo.mHardwareRenderer != null && 2723 !mAttachInfo.mHardwareRenderer.isEnabled() && 2724 mAttachInfo.mHardwareRenderer.isRequested()) { 2725 2726 try { 2727 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2728 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 2729 } catch (OutOfResourcesException e) { 2730 handleOutOfResourcesException(e); 2731 return; 2732 } 2733 2734 mFullRedrawNeeded = true; 2735 scheduleTraversals(); 2736 return; 2737 } 2738 2739 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2740 return; 2741 } 2742 } 2743 } 2744 2745 if (animating) { 2746 mFullRedrawNeeded = true; 2747 scheduleTraversals(); 2748 } 2749 } 2750 2751 /** 2752 * @return true if drawing was successful, false if an error occurred 2753 */ 2754 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2755 boolean scalingRequired, Rect dirty) { 2756 2757 // Draw with software renderer. 2758 final Canvas canvas; 2759 try { 2760 final int left = dirty.left; 2761 final int top = dirty.top; 2762 final int right = dirty.right; 2763 final int bottom = dirty.bottom; 2764 2765 canvas = mSurface.lockCanvas(dirty); 2766 2767 // The dirty rectangle can be modified by Surface.lockCanvas() 2768 //noinspection ConstantConditions 2769 if (left != dirty.left || top != dirty.top || right != dirty.right 2770 || bottom != dirty.bottom) { 2771 attachInfo.mIgnoreDirtyState = true; 2772 } 2773 2774 // TODO: Do this in native 2775 canvas.setDensity(mDensity); 2776 } catch (Surface.OutOfResourcesException e) { 2777 handleOutOfResourcesException(e); 2778 return false; 2779 } catch (IllegalArgumentException e) { 2780 Log.e(mTag, "Could not lock surface", e); 2781 // Don't assume this is due to out of memory, it could be 2782 // something else, and if it is something else then we could 2783 // kill stuff (or ourself) for no reason. 2784 mLayoutRequested = true; // ask wm for a new surface next time. 2785 return false; 2786 } 2787 2788 try { 2789 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2790 Log.v(mTag, "Surface " + surface + " drawing to bitmap w=" 2791 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2792 //canvas.drawARGB(255, 255, 0, 0); 2793 } 2794 2795 // If this bitmap's format includes an alpha channel, we 2796 // need to clear it before drawing so that the child will 2797 // properly re-composite its drawing on a transparent 2798 // background. This automatically respects the clip/dirty region 2799 // or 2800 // If we are applying an offset, we need to clear the area 2801 // where the offset doesn't appear to avoid having garbage 2802 // left in the blank areas. 2803 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2804 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2805 } 2806 2807 dirty.setEmpty(); 2808 mIsAnimating = false; 2809 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2810 2811 if (DEBUG_DRAW) { 2812 Context cxt = mView.getContext(); 2813 Log.i(mTag, "Drawing: package:" + cxt.getPackageName() + 2814 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2815 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2816 } 2817 try { 2818 canvas.translate(-xoff, -yoff); 2819 if (mTranslator != null) { 2820 mTranslator.translateCanvas(canvas); 2821 } 2822 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2823 attachInfo.mSetIgnoreDirtyState = false; 2824 2825 mView.draw(canvas); 2826 2827 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2828 } finally { 2829 if (!attachInfo.mSetIgnoreDirtyState) { 2830 // Only clear the flag if it was not set during the mView.draw() call 2831 attachInfo.mIgnoreDirtyState = false; 2832 } 2833 } 2834 } finally { 2835 try { 2836 surface.unlockCanvasAndPost(canvas); 2837 } catch (IllegalArgumentException e) { 2838 Log.e(mTag, "Could not unlock surface", e); 2839 mLayoutRequested = true; // ask wm for a new surface next time. 2840 //noinspection ReturnInsideFinallyBlock 2841 return false; 2842 } 2843 2844 if (LOCAL_LOGV) { 2845 Log.v(mTag, "Surface " + surface + " unlockCanvasAndPost"); 2846 } 2847 } 2848 return true; 2849 } 2850 2851 /** 2852 * We want to draw a highlight around the current accessibility focused. 2853 * Since adding a style for all possible view is not a viable option we 2854 * have this specialized drawing method. 2855 * 2856 * Note: We are doing this here to be able to draw the highlight for 2857 * virtual views in addition to real ones. 2858 * 2859 * @param canvas The canvas on which to draw. 2860 */ 2861 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2862 final Rect bounds = mAttachInfo.mTmpInvalRect; 2863 if (getAccessibilityFocusedRect(bounds)) { 2864 final Drawable drawable = getAccessibilityFocusedDrawable(); 2865 if (drawable != null) { 2866 drawable.setBounds(bounds); 2867 drawable.draw(canvas); 2868 } 2869 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2870 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2871 } 2872 } 2873 2874 private boolean getAccessibilityFocusedRect(Rect bounds) { 2875 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2876 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2877 return false; 2878 } 2879 2880 final View host = mAccessibilityFocusedHost; 2881 if (host == null || host.mAttachInfo == null) { 2882 return false; 2883 } 2884 2885 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2886 if (provider == null) { 2887 host.getBoundsOnScreen(bounds, true); 2888 } else if (mAccessibilityFocusedVirtualView != null) { 2889 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2890 } else { 2891 return false; 2892 } 2893 2894 // Transform the rect into window-relative coordinates. 2895 final AttachInfo attachInfo = mAttachInfo; 2896 bounds.offset(0, attachInfo.mViewRootImpl.mScrollY); 2897 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2898 if (!bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, 2899 attachInfo.mViewRootImpl.mHeight)) { 2900 // If no intersection, set bounds to empty. 2901 bounds.setEmpty(); 2902 } 2903 return !bounds.isEmpty(); 2904 } 2905 2906 private Drawable getAccessibilityFocusedDrawable() { 2907 // Lazily load the accessibility focus drawable. 2908 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2909 final TypedValue value = new TypedValue(); 2910 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2911 R.attr.accessibilityFocusedDrawable, value, true); 2912 if (resolved) { 2913 mAttachInfo.mAccessibilityFocusDrawable = 2914 mView.mContext.getDrawable(value.resourceId); 2915 } 2916 } 2917 return mAttachInfo.mAccessibilityFocusDrawable; 2918 } 2919 2920 /** 2921 * Requests that the root render node is invalidated next time we perform a draw, such that 2922 * {@link WindowCallbacks#onPostDraw} gets called. 2923 */ 2924 public void requestInvalidateRootRenderNode() { 2925 mInvalidateRootRequested = true; 2926 } 2927 2928 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2929 final Rect ci = mAttachInfo.mContentInsets; 2930 final Rect vi = mAttachInfo.mVisibleInsets; 2931 int scrollY = 0; 2932 boolean handled = false; 2933 2934 if (vi.left > ci.left || vi.top > ci.top 2935 || vi.right > ci.right || vi.bottom > ci.bottom) { 2936 // We'll assume that we aren't going to change the scroll 2937 // offset, since we want to avoid that unless it is actually 2938 // going to make the focus visible... otherwise we scroll 2939 // all over the place. 2940 scrollY = mScrollY; 2941 // We can be called for two different situations: during a draw, 2942 // to update the scroll position if the focus has changed (in which 2943 // case 'rectangle' is null), or in response to a 2944 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2945 // is non-null and we just want to scroll to whatever that 2946 // rectangle is). 2947 final View focus = mView.findFocus(); 2948 if (focus == null) { 2949 return false; 2950 } 2951 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2952 if (focus != lastScrolledFocus) { 2953 // If the focus has changed, then ignore any requests to scroll 2954 // to a rectangle; first we want to make sure the entire focus 2955 // view is visible. 2956 rectangle = null; 2957 } 2958 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Eval scroll: focus=" + focus 2959 + " rectangle=" + rectangle + " ci=" + ci 2960 + " vi=" + vi); 2961 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2962 // Optimization: if the focus hasn't changed since last 2963 // time, and no layout has happened, then just leave things 2964 // as they are. 2965 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Keeping scroll y=" 2966 + mScrollY + " vi=" + vi.toShortString()); 2967 } else { 2968 // We need to determine if the currently focused view is 2969 // within the visible part of the window and, if not, apply 2970 // a pan so it can be seen. 2971 mLastScrolledFocus = new WeakReference<View>(focus); 2972 mScrollMayChange = false; 2973 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Need to scroll?"); 2974 // Try to find the rectangle from the focus view. 2975 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2976 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Root w=" 2977 + mView.getWidth() + " h=" + mView.getHeight() 2978 + " ci=" + ci.toShortString() 2979 + " vi=" + vi.toShortString()); 2980 if (rectangle == null) { 2981 focus.getFocusedRect(mTempRect); 2982 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Focus " + focus 2983 + ": focusRect=" + mTempRect.toShortString()); 2984 if (mView instanceof ViewGroup) { 2985 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2986 focus, mTempRect); 2987 } 2988 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2989 "Focus in window: focusRect=" 2990 + mTempRect.toShortString() 2991 + " visRect=" + mVisRect.toShortString()); 2992 } else { 2993 mTempRect.set(rectangle); 2994 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2995 "Request scroll to rect: " 2996 + mTempRect.toShortString() 2997 + " visRect=" + mVisRect.toShortString()); 2998 } 2999 if (mTempRect.intersect(mVisRect)) { 3000 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3001 "Focus window visible rect: " 3002 + mTempRect.toShortString()); 3003 if (mTempRect.height() > 3004 (mView.getHeight()-vi.top-vi.bottom)) { 3005 // If the focus simply is not going to fit, then 3006 // best is probably just to leave things as-is. 3007 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3008 "Too tall; leaving scrollY=" + scrollY); 3009 } else if ((mTempRect.top-scrollY) < vi.top) { 3010 scrollY -= vi.top - (mTempRect.top-scrollY); 3011 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3012 "Top covered; scrollY=" + scrollY); 3013 } else if ((mTempRect.bottom-scrollY) 3014 > (mView.getHeight()-vi.bottom)) { 3015 scrollY += (mTempRect.bottom-scrollY) 3016 - (mView.getHeight()-vi.bottom); 3017 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3018 "Bottom covered; scrollY=" + scrollY); 3019 } 3020 handled = true; 3021 } 3022 } 3023 } 3024 } 3025 3026 if (scrollY != mScrollY) { 3027 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Pan scroll changed: old=" 3028 + mScrollY + " , new=" + scrollY); 3029 if (!immediate) { 3030 if (mScroller == null) { 3031 mScroller = new Scroller(mView.getContext()); 3032 } 3033 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 3034 } else if (mScroller != null) { 3035 mScroller.abortAnimation(); 3036 } 3037 mScrollY = scrollY; 3038 } 3039 3040 return handled; 3041 } 3042 3043 /** 3044 * @hide 3045 */ 3046 public View getAccessibilityFocusedHost() { 3047 return mAccessibilityFocusedHost; 3048 } 3049 3050 /** 3051 * @hide 3052 */ 3053 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 3054 return mAccessibilityFocusedVirtualView; 3055 } 3056 3057 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 3058 // If we have a virtual view with accessibility focus we need 3059 // to clear the focus and invalidate the virtual view bounds. 3060 if (mAccessibilityFocusedVirtualView != null) { 3061 3062 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 3063 View focusHost = mAccessibilityFocusedHost; 3064 3065 // Wipe the state of the current accessibility focus since 3066 // the call into the provider to clear accessibility focus 3067 // will fire an accessibility event which will end up calling 3068 // this method and we want to have clean state when this 3069 // invocation happens. 3070 mAccessibilityFocusedHost = null; 3071 mAccessibilityFocusedVirtualView = null; 3072 3073 // Clear accessibility focus on the host after clearing state since 3074 // this method may be reentrant. 3075 focusHost.clearAccessibilityFocusNoCallbacks(); 3076 3077 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 3078 if (provider != null) { 3079 // Invalidate the area of the cleared accessibility focus. 3080 focusNode.getBoundsInParent(mTempRect); 3081 focusHost.invalidate(mTempRect); 3082 // Clear accessibility focus in the virtual node. 3083 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 3084 focusNode.getSourceNodeId()); 3085 provider.performAction(virtualNodeId, 3086 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 3087 } 3088 focusNode.recycle(); 3089 } 3090 if (mAccessibilityFocusedHost != null) { 3091 // Clear accessibility focus in the view. 3092 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 3093 } 3094 3095 // Set the new focus host and node. 3096 mAccessibilityFocusedHost = view; 3097 mAccessibilityFocusedVirtualView = node; 3098 3099 if (mAttachInfo.mHardwareRenderer != null) { 3100 mAttachInfo.mHardwareRenderer.invalidateRoot(); 3101 } 3102 } 3103 3104 void setPointerCapture(View view) { 3105 if (!mAttachInfo.mHasWindowFocus) { 3106 Log.w(mTag, "Can't set capture if it's not focused."); 3107 return; 3108 } 3109 if (mCapturingView == view) { 3110 return; 3111 } 3112 mCapturingView = view; 3113 InputManager.getInstance().setPointerIconDetached(true); 3114 } 3115 3116 void releasePointerCapture(View view) { 3117 if (mCapturingView != view || mCapturingView == null) { 3118 return; 3119 } 3120 3121 mCapturingView = null; 3122 InputManager.getInstance().setPointerIconDetached(false); 3123 } 3124 3125 boolean hasPointerCapture(View view) { 3126 return view != null && mCapturingView == view; 3127 } 3128 3129 @Override 3130 public void requestChildFocus(View child, View focused) { 3131 if (DEBUG_INPUT_RESIZE) { 3132 Log.v(mTag, "Request child focus: focus now " + focused); 3133 } 3134 checkThread(); 3135 scheduleTraversals(); 3136 } 3137 3138 @Override 3139 public void clearChildFocus(View child) { 3140 if (DEBUG_INPUT_RESIZE) { 3141 Log.v(mTag, "Clearing child focus"); 3142 } 3143 checkThread(); 3144 scheduleTraversals(); 3145 } 3146 3147 @Override 3148 public ViewParent getParentForAccessibility() { 3149 return null; 3150 } 3151 3152 @Override 3153 public void focusableViewAvailable(View v) { 3154 checkThread(); 3155 if (mView != null) { 3156 if (!mView.hasFocus()) { 3157 v.requestFocus(); 3158 } else { 3159 // the one case where will transfer focus away from the current one 3160 // is if the current view is a view group that prefers to give focus 3161 // to its children first AND the view is a descendant of it. 3162 View focused = mView.findFocus(); 3163 if (focused instanceof ViewGroup) { 3164 ViewGroup group = (ViewGroup) focused; 3165 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3166 && isViewDescendantOf(v, focused)) { 3167 v.requestFocus(); 3168 } 3169 } 3170 } 3171 } 3172 } 3173 3174 @Override 3175 public void recomputeViewAttributes(View child) { 3176 checkThread(); 3177 if (mView == child) { 3178 mAttachInfo.mRecomputeGlobalAttributes = true; 3179 if (!mWillDrawSoon) { 3180 scheduleTraversals(); 3181 } 3182 } 3183 } 3184 3185 void dispatchDetachedFromWindow() { 3186 if (mView != null && mView.mAttachInfo != null) { 3187 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 3188 mView.dispatchDetachedFromWindow(); 3189 } 3190 3191 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 3192 mAccessibilityManager.removeAccessibilityStateChangeListener( 3193 mAccessibilityInteractionConnectionManager); 3194 mAccessibilityManager.removeHighTextContrastStateChangeListener( 3195 mHighContrastTextManager); 3196 removeSendWindowContentChangedCallback(); 3197 3198 destroyHardwareRenderer(); 3199 3200 setAccessibilityFocus(null, null); 3201 3202 mView.assignParent(null); 3203 mView = null; 3204 mAttachInfo.mRootView = null; 3205 3206 if (mCapturingView != null) { 3207 releasePointerCapture(mCapturingView); 3208 } 3209 3210 mSurface.release(); 3211 3212 if (mInputQueueCallback != null && mInputQueue != null) { 3213 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 3214 mInputQueue.dispose(); 3215 mInputQueueCallback = null; 3216 mInputQueue = null; 3217 } 3218 if (mInputEventReceiver != null) { 3219 mInputEventReceiver.dispose(); 3220 mInputEventReceiver = null; 3221 } 3222 try { 3223 mWindowSession.remove(mWindow); 3224 } catch (RemoteException e) { 3225 } 3226 3227 // Dispose the input channel after removing the window so the Window Manager 3228 // doesn't interpret the input channel being closed as an abnormal termination. 3229 if (mInputChannel != null) { 3230 mInputChannel.dispose(); 3231 mInputChannel = null; 3232 } 3233 3234 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3235 3236 unscheduleTraversals(); 3237 } 3238 3239 void updateConfiguration(Configuration config, boolean force) { 3240 if (DEBUG_CONFIGURATION) Log.v(mTag, 3241 "Applying new config to window " 3242 + mWindowAttributes.getTitle() 3243 + ": " + config); 3244 3245 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3246 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3247 config = new Configuration(config); 3248 ci.applyToConfiguration(mNoncompatDensity, config); 3249 } 3250 3251 synchronized (sConfigCallbacks) { 3252 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3253 sConfigCallbacks.get(i).onConfigurationChanged(config); 3254 } 3255 } 3256 if (mView != null) { 3257 // At this point the resources have been updated to 3258 // have the most recent config, whatever that is. Use 3259 // the one in them which may be newer. 3260 config = mView.getResources().getConfiguration(); 3261 if (force || mLastConfiguration.diff(config) != 0) { 3262 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3263 final int currentLayoutDirection = config.getLayoutDirection(); 3264 mLastConfiguration.setTo(config); 3265 if (lastLayoutDirection != currentLayoutDirection && 3266 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3267 mView.setLayoutDirection(currentLayoutDirection); 3268 } 3269 mView.dispatchConfigurationChanged(config); 3270 } 3271 } 3272 } 3273 3274 /** 3275 * Return true if child is an ancestor of parent, (or equal to the parent). 3276 */ 3277 public static boolean isViewDescendantOf(View child, View parent) { 3278 if (child == parent) { 3279 return true; 3280 } 3281 3282 final ViewParent theParent = child.getParent(); 3283 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3284 } 3285 3286 private static void forceLayout(View view) { 3287 view.forceLayout(); 3288 if (view instanceof ViewGroup) { 3289 ViewGroup group = (ViewGroup) view; 3290 final int count = group.getChildCount(); 3291 for (int i = 0; i < count; i++) { 3292 forceLayout(group.getChildAt(i)); 3293 } 3294 } 3295 } 3296 3297 private final static int MSG_INVALIDATE = 1; 3298 private final static int MSG_INVALIDATE_RECT = 2; 3299 private final static int MSG_DIE = 3; 3300 private final static int MSG_RESIZED = 4; 3301 private final static int MSG_RESIZED_REPORT = 5; 3302 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3303 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3304 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3305 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3306 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3307 private final static int MSG_CHECK_FOCUS = 13; 3308 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3309 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3310 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3311 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3312 private final static int MSG_UPDATE_CONFIGURATION = 18; 3313 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3314 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3315 private final static int MSG_INVALIDATE_WORLD = 22; 3316 private final static int MSG_WINDOW_MOVED = 23; 3317 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 24; 3318 private final static int MSG_DISPATCH_WINDOW_SHOWN = 25; 3319 private final static int MSG_REQUEST_KEYBOARD_SHORTCUTS = 26; 3320 private final static int MSG_UPDATE_POINTER_ICON = 27; 3321 3322 final class ViewRootHandler extends Handler { 3323 @Override 3324 public String getMessageName(Message message) { 3325 switch (message.what) { 3326 case MSG_INVALIDATE: 3327 return "MSG_INVALIDATE"; 3328 case MSG_INVALIDATE_RECT: 3329 return "MSG_INVALIDATE_RECT"; 3330 case MSG_DIE: 3331 return "MSG_DIE"; 3332 case MSG_RESIZED: 3333 return "MSG_RESIZED"; 3334 case MSG_RESIZED_REPORT: 3335 return "MSG_RESIZED_REPORT"; 3336 case MSG_WINDOW_FOCUS_CHANGED: 3337 return "MSG_WINDOW_FOCUS_CHANGED"; 3338 case MSG_DISPATCH_INPUT_EVENT: 3339 return "MSG_DISPATCH_INPUT_EVENT"; 3340 case MSG_DISPATCH_APP_VISIBILITY: 3341 return "MSG_DISPATCH_APP_VISIBILITY"; 3342 case MSG_DISPATCH_GET_NEW_SURFACE: 3343 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3344 case MSG_DISPATCH_KEY_FROM_IME: 3345 return "MSG_DISPATCH_KEY_FROM_IME"; 3346 case MSG_CHECK_FOCUS: 3347 return "MSG_CHECK_FOCUS"; 3348 case MSG_CLOSE_SYSTEM_DIALOGS: 3349 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3350 case MSG_DISPATCH_DRAG_EVENT: 3351 return "MSG_DISPATCH_DRAG_EVENT"; 3352 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3353 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3354 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3355 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3356 case MSG_UPDATE_CONFIGURATION: 3357 return "MSG_UPDATE_CONFIGURATION"; 3358 case MSG_PROCESS_INPUT_EVENTS: 3359 return "MSG_PROCESS_INPUT_EVENTS"; 3360 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3361 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3362 case MSG_WINDOW_MOVED: 3363 return "MSG_WINDOW_MOVED"; 3364 case MSG_SYNTHESIZE_INPUT_EVENT: 3365 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3366 case MSG_DISPATCH_WINDOW_SHOWN: 3367 return "MSG_DISPATCH_WINDOW_SHOWN"; 3368 case MSG_UPDATE_POINTER_ICON: 3369 return "MSG_UPDATE_POINTER_ICON"; 3370 } 3371 return super.getMessageName(message); 3372 } 3373 3374 @Override 3375 public void handleMessage(Message msg) { 3376 switch (msg.what) { 3377 case MSG_INVALIDATE: 3378 ((View) msg.obj).invalidate(); 3379 break; 3380 case MSG_INVALIDATE_RECT: 3381 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3382 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3383 info.recycle(); 3384 break; 3385 case MSG_PROCESS_INPUT_EVENTS: 3386 mProcessInputEventsScheduled = false; 3387 doProcessInputEvents(); 3388 break; 3389 case MSG_DISPATCH_APP_VISIBILITY: 3390 handleAppVisibility(msg.arg1 != 0); 3391 break; 3392 case MSG_DISPATCH_GET_NEW_SURFACE: 3393 handleGetNewSurface(); 3394 break; 3395 case MSG_RESIZED: { 3396 // Recycled in the fall through... 3397 SomeArgs args = (SomeArgs) msg.obj; 3398 if (mWinFrame.equals(args.arg1) 3399 && mPendingOverscanInsets.equals(args.arg5) 3400 && mPendingContentInsets.equals(args.arg2) 3401 && mPendingStableInsets.equals(args.arg6) 3402 && mPendingVisibleInsets.equals(args.arg3) 3403 && mPendingOutsets.equals(args.arg7) 3404 && mPendingBackDropFrame.equals(args.arg8) 3405 && args.arg4 == null 3406 && args.argi1 == 0) { 3407 break; 3408 } 3409 } // fall through... 3410 case MSG_RESIZED_REPORT: 3411 if (mAdded) { 3412 SomeArgs args = (SomeArgs) msg.obj; 3413 3414 Configuration config = (Configuration) args.arg4; 3415 if (config != null) { 3416 updateConfiguration(config, false); 3417 } 3418 3419 mWinFrame.set((Rect) args.arg1); 3420 mPendingOverscanInsets.set((Rect) args.arg5); 3421 mPendingContentInsets.set((Rect) args.arg2); 3422 mPendingStableInsets.set((Rect) args.arg6); 3423 mPendingVisibleInsets.set((Rect) args.arg3); 3424 mPendingOutsets.set((Rect) args.arg7); 3425 mPendingBackDropFrame.set((Rect) args.arg8); 3426 mForceNextWindowRelayout = args.argi1 != 0; 3427 mPendingAlwaysConsumeNavBar = args.argi2 != 0; 3428 3429 args.recycle(); 3430 3431 if (msg.what == MSG_RESIZED_REPORT) { 3432 mReportNextDraw = true; 3433 } 3434 3435 if (mView != null) { 3436 forceLayout(mView); 3437 } 3438 3439 requestLayout(); 3440 } 3441 break; 3442 case MSG_WINDOW_MOVED: 3443 if (mAdded) { 3444 final int w = mWinFrame.width(); 3445 final int h = mWinFrame.height(); 3446 final int l = msg.arg1; 3447 final int t = msg.arg2; 3448 mWinFrame.left = l; 3449 mWinFrame.right = l + w; 3450 mWinFrame.top = t; 3451 mWinFrame.bottom = t + h; 3452 3453 mPendingBackDropFrame.set(mWinFrame); 3454 3455 // Suppress layouts during resizing - a correct layout will happen when resizing 3456 // is done, and this just increases system load. 3457 boolean isDockedDivider = mWindowAttributes.type == TYPE_DOCK_DIVIDER; 3458 boolean suppress = (mDragResizing && mResizeMode == RESIZE_MODE_DOCKED_DIVIDER) 3459 || isDockedDivider; 3460 if (!suppress) { 3461 if (mView != null) { 3462 forceLayout(mView); 3463 } 3464 requestLayout(); 3465 } else { 3466 maybeHandleWindowMove(mWinFrame); 3467 } 3468 } 3469 break; 3470 case MSG_WINDOW_FOCUS_CHANGED: { 3471 if (mAdded) { 3472 boolean hasWindowFocus = msg.arg1 != 0; 3473 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3474 3475 profileRendering(hasWindowFocus); 3476 3477 if (hasWindowFocus) { 3478 boolean inTouchMode = msg.arg2 != 0; 3479 ensureTouchModeLocally(inTouchMode); 3480 3481 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3482 mFullRedrawNeeded = true; 3483 try { 3484 final WindowManager.LayoutParams lp = mWindowAttributes; 3485 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3486 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3487 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 3488 } catch (OutOfResourcesException e) { 3489 Log.e(mTag, "OutOfResourcesException locking surface", e); 3490 try { 3491 if (!mWindowSession.outOfMemory(mWindow)) { 3492 Slog.w(mTag, "No processes killed for memory; killing self"); 3493 Process.killProcess(Process.myPid()); 3494 } 3495 } catch (RemoteException ex) { 3496 } 3497 // Retry in a bit. 3498 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3499 return; 3500 } 3501 } 3502 } 3503 3504 mLastWasImTarget = WindowManager.LayoutParams 3505 .mayUseInputMethod(mWindowAttributes.flags); 3506 3507 InputMethodManager imm = InputMethodManager.peekInstance(); 3508 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3509 imm.onPreWindowFocus(mView, hasWindowFocus); 3510 } 3511 if (mView != null) { 3512 mAttachInfo.mKeyDispatchState.reset(); 3513 mView.dispatchWindowFocusChanged(hasWindowFocus); 3514 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3515 } 3516 3517 // Note: must be done after the focus change callbacks, 3518 // so all of the view state is set up correctly. 3519 if (hasWindowFocus) { 3520 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3521 imm.onPostWindowFocus(mView, mView.findFocus(), 3522 mWindowAttributes.softInputMode, 3523 !mHasHadWindowFocus, mWindowAttributes.flags); 3524 } 3525 // Clear the forward bit. We can just do this directly, since 3526 // the window manager doesn't care about it. 3527 mWindowAttributes.softInputMode &= 3528 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3529 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3530 .softInputMode &= 3531 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3532 mHasHadWindowFocus = true; 3533 } else if (mCapturingView != null) { 3534 releasePointerCapture(mCapturingView); 3535 } 3536 } 3537 } break; 3538 case MSG_DIE: 3539 doDie(); 3540 break; 3541 case MSG_DISPATCH_INPUT_EVENT: { 3542 SomeArgs args = (SomeArgs)msg.obj; 3543 InputEvent event = (InputEvent)args.arg1; 3544 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3545 enqueueInputEvent(event, receiver, 0, true); 3546 args.recycle(); 3547 } break; 3548 case MSG_SYNTHESIZE_INPUT_EVENT: { 3549 InputEvent event = (InputEvent)msg.obj; 3550 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3551 } break; 3552 case MSG_DISPATCH_KEY_FROM_IME: { 3553 if (LOCAL_LOGV) Log.v( 3554 TAG, "Dispatching key " 3555 + msg.obj + " from IME to " + mView); 3556 KeyEvent event = (KeyEvent)msg.obj; 3557 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3558 // The IME is trying to say this event is from the 3559 // system! Bad bad bad! 3560 //noinspection UnusedAssignment 3561 event = KeyEvent.changeFlags(event, event.getFlags() & 3562 ~KeyEvent.FLAG_FROM_SYSTEM); 3563 } 3564 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3565 } break; 3566 case MSG_CHECK_FOCUS: { 3567 InputMethodManager imm = InputMethodManager.peekInstance(); 3568 if (imm != null) { 3569 imm.checkFocus(); 3570 } 3571 } break; 3572 case MSG_CLOSE_SYSTEM_DIALOGS: { 3573 if (mView != null) { 3574 mView.onCloseSystemDialogs((String)msg.obj); 3575 } 3576 } break; 3577 case MSG_DISPATCH_DRAG_EVENT: 3578 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3579 DragEvent event = (DragEvent)msg.obj; 3580 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3581 handleDragEvent(event); 3582 } break; 3583 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3584 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3585 } break; 3586 case MSG_UPDATE_CONFIGURATION: { 3587 Configuration config = (Configuration)msg.obj; 3588 if (config.isOtherSeqNewer(mLastConfiguration)) { 3589 config = mLastConfiguration; 3590 } 3591 updateConfiguration(config, false); 3592 } break; 3593 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3594 setAccessibilityFocus(null, null); 3595 } break; 3596 case MSG_INVALIDATE_WORLD: { 3597 if (mView != null) { 3598 invalidateWorld(mView); 3599 } 3600 } break; 3601 case MSG_DISPATCH_WINDOW_SHOWN: { 3602 handleDispatchWindowShown(); 3603 } break; 3604 case MSG_REQUEST_KEYBOARD_SHORTCUTS: { 3605 final IResultReceiver receiver = (IResultReceiver) msg.obj; 3606 final int deviceId = msg.arg1; 3607 handleRequestKeyboardShortcuts(receiver, deviceId); 3608 } break; 3609 case MSG_UPDATE_POINTER_ICON: { 3610 MotionEvent event = (MotionEvent) msg.obj; 3611 resetPointerIcon(event); 3612 } break; 3613 } 3614 } 3615 } 3616 3617 final ViewRootHandler mHandler = new ViewRootHandler(); 3618 3619 /** 3620 * Something in the current window tells us we need to change the touch mode. For 3621 * example, we are not in touch mode, and the user touches the screen. 3622 * 3623 * If the touch mode has changed, tell the window manager, and handle it locally. 3624 * 3625 * @param inTouchMode Whether we want to be in touch mode. 3626 * @return True if the touch mode changed and focus changed was changed as a result 3627 */ 3628 boolean ensureTouchMode(boolean inTouchMode) { 3629 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3630 + "touch mode is " + mAttachInfo.mInTouchMode); 3631 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3632 3633 // tell the window manager 3634 try { 3635 mWindowSession.setInTouchMode(inTouchMode); 3636 } catch (RemoteException e) { 3637 throw new RuntimeException(e); 3638 } 3639 3640 // handle the change 3641 return ensureTouchModeLocally(inTouchMode); 3642 } 3643 3644 /** 3645 * Ensure that the touch mode for this window is set, and if it is changing, 3646 * take the appropriate action. 3647 * @param inTouchMode Whether we want to be in touch mode. 3648 * @return True if the touch mode changed and focus changed was changed as a result 3649 */ 3650 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3651 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3652 + "touch mode is " + mAttachInfo.mInTouchMode); 3653 3654 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3655 3656 mAttachInfo.mInTouchMode = inTouchMode; 3657 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3658 3659 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3660 } 3661 3662 private boolean enterTouchMode() { 3663 if (mView != null && mView.hasFocus()) { 3664 // note: not relying on mFocusedView here because this could 3665 // be when the window is first being added, and mFocused isn't 3666 // set yet. 3667 final View focused = mView.findFocus(); 3668 if (focused != null && !focused.isFocusableInTouchMode()) { 3669 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3670 if (ancestorToTakeFocus != null) { 3671 // there is an ancestor that wants focus after its 3672 // descendants that is focusable in touch mode.. give it 3673 // focus 3674 return ancestorToTakeFocus.requestFocus(); 3675 } else { 3676 // There's nothing to focus. Clear and propagate through the 3677 // hierarchy, but don't attempt to place new focus. 3678 focused.clearFocusInternal(null, true, false); 3679 return true; 3680 } 3681 } 3682 } 3683 return false; 3684 } 3685 3686 /** 3687 * Find an ancestor of focused that wants focus after its descendants and is 3688 * focusable in touch mode. 3689 * @param focused The currently focused view. 3690 * @return An appropriate view, or null if no such view exists. 3691 */ 3692 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3693 ViewParent parent = focused.getParent(); 3694 while (parent instanceof ViewGroup) { 3695 final ViewGroup vgParent = (ViewGroup) parent; 3696 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3697 && vgParent.isFocusableInTouchMode()) { 3698 return vgParent; 3699 } 3700 if (vgParent.isRootNamespace()) { 3701 return null; 3702 } else { 3703 parent = vgParent.getParent(); 3704 } 3705 } 3706 return null; 3707 } 3708 3709 private boolean leaveTouchMode() { 3710 if (mView != null) { 3711 if (mView.hasFocus()) { 3712 View focusedView = mView.findFocus(); 3713 if (!(focusedView instanceof ViewGroup)) { 3714 // some view has focus, let it keep it 3715 return false; 3716 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3717 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3718 // some view group has focus, and doesn't prefer its children 3719 // over itself for focus, so let them keep it. 3720 return false; 3721 } 3722 } 3723 3724 // find the best view to give focus to in this brave new non-touch-mode 3725 // world 3726 final View focused = focusSearch(null, View.FOCUS_DOWN); 3727 if (focused != null) { 3728 return focused.requestFocus(View.FOCUS_DOWN); 3729 } 3730 } 3731 return false; 3732 } 3733 3734 /** 3735 * Base class for implementing a stage in the chain of responsibility 3736 * for processing input events. 3737 * <p> 3738 * Events are delivered to the stage by the {@link #deliver} method. The stage 3739 * then has the choice of finishing the event or forwarding it to the next stage. 3740 * </p> 3741 */ 3742 abstract class InputStage { 3743 private final InputStage mNext; 3744 3745 protected static final int FORWARD = 0; 3746 protected static final int FINISH_HANDLED = 1; 3747 protected static final int FINISH_NOT_HANDLED = 2; 3748 3749 /** 3750 * Creates an input stage. 3751 * @param next The next stage to which events should be forwarded. 3752 */ 3753 public InputStage(InputStage next) { 3754 mNext = next; 3755 } 3756 3757 /** 3758 * Delivers an event to be processed. 3759 */ 3760 public final void deliver(QueuedInputEvent q) { 3761 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3762 forward(q); 3763 } else if (shouldDropInputEvent(q)) { 3764 finish(q, false); 3765 } else { 3766 apply(q, onProcess(q)); 3767 } 3768 } 3769 3770 /** 3771 * Marks the the input event as finished then forwards it to the next stage. 3772 */ 3773 protected void finish(QueuedInputEvent q, boolean handled) { 3774 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3775 if (handled) { 3776 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3777 } 3778 forward(q); 3779 } 3780 3781 /** 3782 * Forwards the event to the next stage. 3783 */ 3784 protected void forward(QueuedInputEvent q) { 3785 onDeliverToNext(q); 3786 } 3787 3788 /** 3789 * Applies a result code from {@link #onProcess} to the specified event. 3790 */ 3791 protected void apply(QueuedInputEvent q, int result) { 3792 if (result == FORWARD) { 3793 forward(q); 3794 } else if (result == FINISH_HANDLED) { 3795 finish(q, true); 3796 } else if (result == FINISH_NOT_HANDLED) { 3797 finish(q, false); 3798 } else { 3799 throw new IllegalArgumentException("Invalid result: " + result); 3800 } 3801 } 3802 3803 /** 3804 * Called when an event is ready to be processed. 3805 * @return A result code indicating how the event was handled. 3806 */ 3807 protected int onProcess(QueuedInputEvent q) { 3808 return FORWARD; 3809 } 3810 3811 /** 3812 * Called when an event is being delivered to the next stage. 3813 */ 3814 protected void onDeliverToNext(QueuedInputEvent q) { 3815 if (DEBUG_INPUT_STAGES) { 3816 Log.v(mTag, "Done with " + getClass().getSimpleName() + ". " + q); 3817 } 3818 if (mNext != null) { 3819 mNext.deliver(q); 3820 } else { 3821 finishInputEvent(q); 3822 } 3823 } 3824 3825 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3826 if (mView == null || !mAdded) { 3827 Slog.w(mTag, "Dropping event due to root view being removed: " + q.mEvent); 3828 return true; 3829 } else if ((!mAttachInfo.mHasWindowFocus 3830 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) || mStopped 3831 || (mIsAmbientMode && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_BUTTON)) 3832 || (mPausedForTransition && !isBack(q.mEvent))) { 3833 // This is a focus event and the window doesn't currently have input focus or 3834 // has stopped. This could be an event that came back from the previous stage 3835 // but the window has lost focus or stopped in the meantime. 3836 if (isTerminalInputEvent(q.mEvent)) { 3837 // Don't drop terminal input events, however mark them as canceled. 3838 q.mEvent.cancel(); 3839 Slog.w(mTag, "Cancelling event due to no window focus: " + q.mEvent); 3840 return false; 3841 } 3842 3843 // Drop non-terminal input events. 3844 Slog.w(mTag, "Dropping event due to no window focus: " + q.mEvent); 3845 return true; 3846 } 3847 return false; 3848 } 3849 3850 void dump(String prefix, PrintWriter writer) { 3851 if (mNext != null) { 3852 mNext.dump(prefix, writer); 3853 } 3854 } 3855 3856 private boolean isBack(InputEvent event) { 3857 if (event instanceof KeyEvent) { 3858 return ((KeyEvent) event).getKeyCode() == KeyEvent.KEYCODE_BACK; 3859 } else { 3860 return false; 3861 } 3862 } 3863 } 3864 3865 /** 3866 * Base class for implementing an input pipeline stage that supports 3867 * asynchronous and out-of-order processing of input events. 3868 * <p> 3869 * In addition to what a normal input stage can do, an asynchronous 3870 * input stage may also defer an input event that has been delivered to it 3871 * and finish or forward it later. 3872 * </p> 3873 */ 3874 abstract class AsyncInputStage extends InputStage { 3875 private final String mTraceCounter; 3876 3877 private QueuedInputEvent mQueueHead; 3878 private QueuedInputEvent mQueueTail; 3879 private int mQueueLength; 3880 3881 protected static final int DEFER = 3; 3882 3883 /** 3884 * Creates an asynchronous input stage. 3885 * @param next The next stage to which events should be forwarded. 3886 * @param traceCounter The name of a counter to record the size of 3887 * the queue of pending events. 3888 */ 3889 public AsyncInputStage(InputStage next, String traceCounter) { 3890 super(next); 3891 mTraceCounter = traceCounter; 3892 } 3893 3894 /** 3895 * Marks the event as deferred, which is to say that it will be handled 3896 * asynchronously. The caller is responsible for calling {@link #forward} 3897 * or {@link #finish} later when it is done handling the event. 3898 */ 3899 protected void defer(QueuedInputEvent q) { 3900 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3901 enqueue(q); 3902 } 3903 3904 @Override 3905 protected void forward(QueuedInputEvent q) { 3906 // Clear the deferred flag. 3907 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3908 3909 // Fast path if the queue is empty. 3910 QueuedInputEvent curr = mQueueHead; 3911 if (curr == null) { 3912 super.forward(q); 3913 return; 3914 } 3915 3916 // Determine whether the event must be serialized behind any others 3917 // before it can be delivered to the next stage. This is done because 3918 // deferred events might be handled out of order by the stage. 3919 final int deviceId = q.mEvent.getDeviceId(); 3920 QueuedInputEvent prev = null; 3921 boolean blocked = false; 3922 while (curr != null && curr != q) { 3923 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3924 blocked = true; 3925 } 3926 prev = curr; 3927 curr = curr.mNext; 3928 } 3929 3930 // If the event is blocked, then leave it in the queue to be delivered later. 3931 // Note that the event might not yet be in the queue if it was not previously 3932 // deferred so we will enqueue it if needed. 3933 if (blocked) { 3934 if (curr == null) { 3935 enqueue(q); 3936 } 3937 return; 3938 } 3939 3940 // The event is not blocked. Deliver it immediately. 3941 if (curr != null) { 3942 curr = curr.mNext; 3943 dequeue(q, prev); 3944 } 3945 super.forward(q); 3946 3947 // Dequeuing this event may have unblocked successors. Deliver them. 3948 while (curr != null) { 3949 if (deviceId == curr.mEvent.getDeviceId()) { 3950 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3951 break; 3952 } 3953 QueuedInputEvent next = curr.mNext; 3954 dequeue(curr, prev); 3955 super.forward(curr); 3956 curr = next; 3957 } else { 3958 prev = curr; 3959 curr = curr.mNext; 3960 } 3961 } 3962 } 3963 3964 @Override 3965 protected void apply(QueuedInputEvent q, int result) { 3966 if (result == DEFER) { 3967 defer(q); 3968 } else { 3969 super.apply(q, result); 3970 } 3971 } 3972 3973 private void enqueue(QueuedInputEvent q) { 3974 if (mQueueTail == null) { 3975 mQueueHead = q; 3976 mQueueTail = q; 3977 } else { 3978 mQueueTail.mNext = q; 3979 mQueueTail = q; 3980 } 3981 3982 mQueueLength += 1; 3983 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3984 } 3985 3986 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3987 if (prev == null) { 3988 mQueueHead = q.mNext; 3989 } else { 3990 prev.mNext = q.mNext; 3991 } 3992 if (mQueueTail == q) { 3993 mQueueTail = prev; 3994 } 3995 q.mNext = null; 3996 3997 mQueueLength -= 1; 3998 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3999 } 4000 4001 @Override 4002 void dump(String prefix, PrintWriter writer) { 4003 writer.print(prefix); 4004 writer.print(getClass().getName()); 4005 writer.print(": mQueueLength="); 4006 writer.println(mQueueLength); 4007 4008 super.dump(prefix, writer); 4009 } 4010 } 4011 4012 /** 4013 * Delivers pre-ime input events to a native activity. 4014 * Does not support pointer events. 4015 */ 4016 final class NativePreImeInputStage extends AsyncInputStage 4017 implements InputQueue.FinishedInputEventCallback { 4018 public NativePreImeInputStage(InputStage next, String traceCounter) { 4019 super(next, traceCounter); 4020 } 4021 4022 @Override 4023 protected int onProcess(QueuedInputEvent q) { 4024 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 4025 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 4026 return DEFER; 4027 } 4028 return FORWARD; 4029 } 4030 4031 @Override 4032 public void onFinishedInputEvent(Object token, boolean handled) { 4033 QueuedInputEvent q = (QueuedInputEvent)token; 4034 if (handled) { 4035 finish(q, true); 4036 return; 4037 } 4038 forward(q); 4039 } 4040 } 4041 4042 /** 4043 * Delivers pre-ime input events to the view hierarchy. 4044 * Does not support pointer events. 4045 */ 4046 final class ViewPreImeInputStage extends InputStage { 4047 public ViewPreImeInputStage(InputStage next) { 4048 super(next); 4049 } 4050 4051 @Override 4052 protected int onProcess(QueuedInputEvent q) { 4053 if (q.mEvent instanceof KeyEvent) { 4054 return processKeyEvent(q); 4055 } 4056 return FORWARD; 4057 } 4058 4059 private int processKeyEvent(QueuedInputEvent q) { 4060 final KeyEvent event = (KeyEvent)q.mEvent; 4061 if (mView.dispatchKeyEventPreIme(event)) { 4062 return FINISH_HANDLED; 4063 } 4064 return FORWARD; 4065 } 4066 } 4067 4068 /** 4069 * Delivers input events to the ime. 4070 * Does not support pointer events. 4071 */ 4072 final class ImeInputStage extends AsyncInputStage 4073 implements InputMethodManager.FinishedInputEventCallback { 4074 public ImeInputStage(InputStage next, String traceCounter) { 4075 super(next, traceCounter); 4076 } 4077 4078 @Override 4079 protected int onProcess(QueuedInputEvent q) { 4080 if (mLastWasImTarget && !isInLocalFocusMode()) { 4081 InputMethodManager imm = InputMethodManager.peekInstance(); 4082 if (imm != null) { 4083 final InputEvent event = q.mEvent; 4084 if (DEBUG_IMF) Log.v(mTag, "Sending input event to IME: " + event); 4085 int result = imm.dispatchInputEvent(event, q, this, mHandler); 4086 if (result == InputMethodManager.DISPATCH_HANDLED) { 4087 return FINISH_HANDLED; 4088 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 4089 // The IME could not handle it, so skip along to the next InputStage 4090 return FORWARD; 4091 } else { 4092 return DEFER; // callback will be invoked later 4093 } 4094 } 4095 } 4096 return FORWARD; 4097 } 4098 4099 @Override 4100 public void onFinishedInputEvent(Object token, boolean handled) { 4101 QueuedInputEvent q = (QueuedInputEvent)token; 4102 if (handled) { 4103 finish(q, true); 4104 return; 4105 } 4106 forward(q); 4107 } 4108 } 4109 4110 /** 4111 * Performs early processing of post-ime input events. 4112 */ 4113 final class EarlyPostImeInputStage extends InputStage { 4114 public EarlyPostImeInputStage(InputStage next) { 4115 super(next); 4116 } 4117 4118 @Override 4119 protected int onProcess(QueuedInputEvent q) { 4120 if (q.mEvent instanceof KeyEvent) { 4121 return processKeyEvent(q); 4122 } else { 4123 final int source = q.mEvent.getSource(); 4124 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4125 return processPointerEvent(q); 4126 } 4127 } 4128 return FORWARD; 4129 } 4130 4131 private int processKeyEvent(QueuedInputEvent q) { 4132 final KeyEvent event = (KeyEvent)q.mEvent; 4133 4134 // If the key's purpose is to exit touch mode then we consume it 4135 // and consider it handled. 4136 if (checkForLeavingTouchModeAndConsume(event)) { 4137 return FINISH_HANDLED; 4138 } 4139 4140 // Make sure the fallback event policy sees all keys that will be 4141 // delivered to the view hierarchy. 4142 mFallbackEventHandler.preDispatchKeyEvent(event); 4143 return FORWARD; 4144 } 4145 4146 private int processPointerEvent(QueuedInputEvent q) { 4147 final MotionEvent event = (MotionEvent)q.mEvent; 4148 4149 // Translate the pointer event for compatibility, if needed. 4150 if (mTranslator != null) { 4151 mTranslator.translateEventInScreenToAppWindow(event); 4152 } 4153 4154 // Enter touch mode on down or scroll. 4155 final int action = event.getAction(); 4156 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 4157 ensureTouchMode(true); 4158 } 4159 4160 // Offset the scroll position. 4161 if (mCurScrollY != 0) { 4162 event.offsetLocation(0, mCurScrollY); 4163 } 4164 4165 // Remember the touch position for possible drag-initiation. 4166 if (event.isTouchEvent()) { 4167 mLastTouchPoint.x = event.getRawX(); 4168 mLastTouchPoint.y = event.getRawY(); 4169 mLastTouchSource = event.getSource(); 4170 } 4171 return FORWARD; 4172 } 4173 } 4174 4175 /** 4176 * Delivers post-ime input events to a native activity. 4177 */ 4178 final class NativePostImeInputStage extends AsyncInputStage 4179 implements InputQueue.FinishedInputEventCallback { 4180 public NativePostImeInputStage(InputStage next, String traceCounter) { 4181 super(next, traceCounter); 4182 } 4183 4184 @Override 4185 protected int onProcess(QueuedInputEvent q) { 4186 if (mInputQueue != null) { 4187 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 4188 return DEFER; 4189 } 4190 return FORWARD; 4191 } 4192 4193 @Override 4194 public void onFinishedInputEvent(Object token, boolean handled) { 4195 QueuedInputEvent q = (QueuedInputEvent)token; 4196 if (handled) { 4197 finish(q, true); 4198 return; 4199 } 4200 forward(q); 4201 } 4202 } 4203 4204 /** 4205 * Delivers post-ime input events to the view hierarchy. 4206 */ 4207 final class ViewPostImeInputStage extends InputStage { 4208 public ViewPostImeInputStage(InputStage next) { 4209 super(next); 4210 } 4211 4212 @Override 4213 protected int onProcess(QueuedInputEvent q) { 4214 if (q.mEvent instanceof KeyEvent) { 4215 return processKeyEvent(q); 4216 } else { 4217 final int source = q.mEvent.getSource(); 4218 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4219 return processPointerEvent(q); 4220 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4221 return processTrackballEvent(q); 4222 } else { 4223 return processGenericMotionEvent(q); 4224 } 4225 } 4226 } 4227 4228 @Override 4229 protected void onDeliverToNext(QueuedInputEvent q) { 4230 if (mUnbufferedInputDispatch 4231 && q.mEvent instanceof MotionEvent 4232 && ((MotionEvent)q.mEvent).isTouchEvent() 4233 && isTerminalInputEvent(q.mEvent)) { 4234 mUnbufferedInputDispatch = false; 4235 scheduleConsumeBatchedInput(); 4236 } 4237 super.onDeliverToNext(q); 4238 } 4239 4240 private int processKeyEvent(QueuedInputEvent q) { 4241 final KeyEvent event = (KeyEvent)q.mEvent; 4242 4243 // Deliver the key to the view hierarchy. 4244 if (mView.dispatchKeyEvent(event)) { 4245 return FINISH_HANDLED; 4246 } 4247 4248 if (shouldDropInputEvent(q)) { 4249 return FINISH_NOT_HANDLED; 4250 } 4251 4252 // If the Control modifier is held, try to interpret the key as a shortcut. 4253 if (event.getAction() == KeyEvent.ACTION_DOWN 4254 && event.isCtrlPressed() 4255 && event.getRepeatCount() == 0 4256 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4257 if (mView.dispatchKeyShortcutEvent(event)) { 4258 return FINISH_HANDLED; 4259 } 4260 if (shouldDropInputEvent(q)) { 4261 return FINISH_NOT_HANDLED; 4262 } 4263 } 4264 4265 // Apply the fallback event policy. 4266 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4267 return FINISH_HANDLED; 4268 } 4269 if (shouldDropInputEvent(q)) { 4270 return FINISH_NOT_HANDLED; 4271 } 4272 4273 // Handle automatic focus changes. 4274 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4275 int direction = 0; 4276 switch (event.getKeyCode()) { 4277 case KeyEvent.KEYCODE_DPAD_LEFT: 4278 if (event.hasNoModifiers()) { 4279 direction = View.FOCUS_LEFT; 4280 } 4281 break; 4282 case KeyEvent.KEYCODE_DPAD_RIGHT: 4283 if (event.hasNoModifiers()) { 4284 direction = View.FOCUS_RIGHT; 4285 } 4286 break; 4287 case KeyEvent.KEYCODE_DPAD_UP: 4288 if (event.hasNoModifiers()) { 4289 direction = View.FOCUS_UP; 4290 } 4291 break; 4292 case KeyEvent.KEYCODE_DPAD_DOWN: 4293 if (event.hasNoModifiers()) { 4294 direction = View.FOCUS_DOWN; 4295 } 4296 break; 4297 case KeyEvent.KEYCODE_TAB: 4298 if (event.hasNoModifiers()) { 4299 direction = View.FOCUS_FORWARD; 4300 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4301 direction = View.FOCUS_BACKWARD; 4302 } 4303 break; 4304 } 4305 if (direction != 0) { 4306 View focused = mView.findFocus(); 4307 if (focused != null) { 4308 View v = focused.focusSearch(direction); 4309 if (v != null && v != focused) { 4310 // do the math the get the interesting rect 4311 // of previous focused into the coord system of 4312 // newly focused view 4313 focused.getFocusedRect(mTempRect); 4314 if (mView instanceof ViewGroup) { 4315 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4316 focused, mTempRect); 4317 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4318 v, mTempRect); 4319 } 4320 if (v.requestFocus(direction, mTempRect)) { 4321 playSoundEffect(SoundEffectConstants 4322 .getContantForFocusDirection(direction)); 4323 return FINISH_HANDLED; 4324 } 4325 } 4326 4327 // Give the focused view a last chance to handle the dpad key. 4328 if (mView.dispatchUnhandledMove(focused, direction)) { 4329 return FINISH_HANDLED; 4330 } 4331 } else { 4332 // find the best view to give focus to in this non-touch-mode with no-focus 4333 View v = focusSearch(null, direction); 4334 if (v != null && v.requestFocus(direction)) { 4335 return FINISH_HANDLED; 4336 } 4337 } 4338 } 4339 } 4340 return FORWARD; 4341 } 4342 4343 private int processPointerEvent(QueuedInputEvent q) { 4344 final MotionEvent event = (MotionEvent)q.mEvent; 4345 4346 mAttachInfo.mUnbufferedDispatchRequested = false; 4347 final View eventTarget = 4348 (event.isFromSource(InputDevice.SOURCE_MOUSE) && mCapturingView != null) ? 4349 mCapturingView : mView; 4350 mAttachInfo.mHandlingPointerEvent = true; 4351 boolean handled = eventTarget.dispatchPointerEvent(event); 4352 maybeUpdatePointerIcon(event); 4353 mAttachInfo.mHandlingPointerEvent = false; 4354 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4355 mUnbufferedInputDispatch = true; 4356 if (mConsumeBatchedInputScheduled) { 4357 scheduleConsumeBatchedInputImmediately(); 4358 } 4359 } 4360 return handled ? FINISH_HANDLED : FORWARD; 4361 } 4362 4363 private void maybeUpdatePointerIcon(MotionEvent event) { 4364 if (event.getPointerCount() == 1 4365 && event.isFromSource(InputDevice.SOURCE_MOUSE)) { 4366 if (event.getActionMasked() == MotionEvent.ACTION_HOVER_ENTER 4367 || event.getActionMasked() == MotionEvent.ACTION_HOVER_EXIT) { 4368 // Other apps or the window manager may change the icon shape outside of 4369 // this app, therefore the icon shape has to be reset on enter/exit event. 4370 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4371 } 4372 4373 if (event.getActionMasked() != MotionEvent.ACTION_HOVER_EXIT) { 4374 if (!updatePointerIcon(event) && 4375 event.getActionMasked() == MotionEvent.ACTION_HOVER_MOVE) { 4376 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4377 } 4378 } 4379 } 4380 } 4381 4382 private int processTrackballEvent(QueuedInputEvent q) { 4383 final MotionEvent event = (MotionEvent)q.mEvent; 4384 4385 if (mView.dispatchTrackballEvent(event)) { 4386 return FINISH_HANDLED; 4387 } 4388 return FORWARD; 4389 } 4390 4391 private int processGenericMotionEvent(QueuedInputEvent q) { 4392 final MotionEvent event = (MotionEvent)q.mEvent; 4393 4394 // Deliver the event to the view. 4395 if (mView.dispatchGenericMotionEvent(event)) { 4396 return FINISH_HANDLED; 4397 } 4398 return FORWARD; 4399 } 4400 } 4401 4402 private void resetPointerIcon(MotionEvent event) { 4403 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4404 updatePointerIcon(event); 4405 } 4406 4407 private boolean updatePointerIcon(MotionEvent event) { 4408 final float x = event.getX(); 4409 final float y = event.getY(); 4410 if (mView == null) { 4411 // E.g. click outside a popup to dismiss it 4412 Slog.d(mTag, "updatePointerIcon called after view was removed"); 4413 return false; 4414 } 4415 if (x < 0 || x >= mView.getWidth() || y < 0 || y >= mView.getHeight()) { 4416 // E.g. when moving window divider with mouse 4417 Slog.d(mTag, "updatePointerIcon called with position out of bounds"); 4418 return false; 4419 } 4420 final PointerIcon pointerIcon = mView.getPointerIcon(event, x, y); 4421 final int pointerShape = (pointerIcon != null) ? 4422 pointerIcon.getStyle() : PointerIcon.STYLE_DEFAULT; 4423 4424 if (mPointerIconShape != pointerShape) { 4425 mPointerIconShape = pointerShape; 4426 if (mPointerIconShape != PointerIcon.STYLE_CUSTOM) { 4427 mCustomPointerIcon = null; 4428 InputManager.getInstance().setPointerIconShape(pointerShape); 4429 return true; 4430 } 4431 } 4432 if (mPointerIconShape == PointerIcon.STYLE_CUSTOM && 4433 !pointerIcon.equals(mCustomPointerIcon)) { 4434 mCustomPointerIcon = pointerIcon; 4435 InputManager.getInstance().setCustomPointerIcon(mCustomPointerIcon); 4436 } 4437 return true; 4438 } 4439 4440 /** 4441 * Performs synthesis of new input events from unhandled input events. 4442 */ 4443 final class SyntheticInputStage extends InputStage { 4444 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4445 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4446 private final SyntheticTouchNavigationHandler mTouchNavigation = 4447 new SyntheticTouchNavigationHandler(); 4448 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4449 4450 public SyntheticInputStage() { 4451 super(null); 4452 } 4453 4454 @Override 4455 protected int onProcess(QueuedInputEvent q) { 4456 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4457 if (q.mEvent instanceof MotionEvent) { 4458 final MotionEvent event = (MotionEvent)q.mEvent; 4459 final int source = event.getSource(); 4460 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4461 mTrackball.process(event); 4462 return FINISH_HANDLED; 4463 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4464 mJoystick.process(event); 4465 return FINISH_HANDLED; 4466 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4467 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4468 mTouchNavigation.process(event); 4469 return FINISH_HANDLED; 4470 } 4471 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4472 mKeyboard.process((KeyEvent)q.mEvent); 4473 return FINISH_HANDLED; 4474 } 4475 4476 return FORWARD; 4477 } 4478 4479 @Override 4480 protected void onDeliverToNext(QueuedInputEvent q) { 4481 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4482 // Cancel related synthetic events if any prior stage has handled the event. 4483 if (q.mEvent instanceof MotionEvent) { 4484 final MotionEvent event = (MotionEvent)q.mEvent; 4485 final int source = event.getSource(); 4486 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4487 mTrackball.cancel(event); 4488 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4489 mJoystick.cancel(event); 4490 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4491 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4492 mTouchNavigation.cancel(event); 4493 } 4494 } 4495 } 4496 super.onDeliverToNext(q); 4497 } 4498 } 4499 4500 /** 4501 * Creates dpad events from unhandled trackball movements. 4502 */ 4503 final class SyntheticTrackballHandler { 4504 private final TrackballAxis mX = new TrackballAxis(); 4505 private final TrackballAxis mY = new TrackballAxis(); 4506 private long mLastTime; 4507 4508 public void process(MotionEvent event) { 4509 // Translate the trackball event into DPAD keys and try to deliver those. 4510 long curTime = SystemClock.uptimeMillis(); 4511 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4512 // It has been too long since the last movement, 4513 // so restart at the beginning. 4514 mX.reset(0); 4515 mY.reset(0); 4516 mLastTime = curTime; 4517 } 4518 4519 final int action = event.getAction(); 4520 final int metaState = event.getMetaState(); 4521 switch (action) { 4522 case MotionEvent.ACTION_DOWN: 4523 mX.reset(2); 4524 mY.reset(2); 4525 enqueueInputEvent(new KeyEvent(curTime, curTime, 4526 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4527 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4528 InputDevice.SOURCE_KEYBOARD)); 4529 break; 4530 case MotionEvent.ACTION_UP: 4531 mX.reset(2); 4532 mY.reset(2); 4533 enqueueInputEvent(new KeyEvent(curTime, curTime, 4534 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4535 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4536 InputDevice.SOURCE_KEYBOARD)); 4537 break; 4538 } 4539 4540 if (DEBUG_TRACKBALL) Log.v(mTag, "TB X=" + mX.position + " step=" 4541 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4542 + " move=" + event.getX() 4543 + " / Y=" + mY.position + " step=" 4544 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4545 + " move=" + event.getY()); 4546 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4547 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4548 4549 // Generate DPAD events based on the trackball movement. 4550 // We pick the axis that has moved the most as the direction of 4551 // the DPAD. When we generate DPAD events for one axis, then the 4552 // other axis is reset -- we don't want to perform DPAD jumps due 4553 // to slight movements in the trackball when making major movements 4554 // along the other axis. 4555 int keycode = 0; 4556 int movement = 0; 4557 float accel = 1; 4558 if (xOff > yOff) { 4559 movement = mX.generate(); 4560 if (movement != 0) { 4561 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4562 : KeyEvent.KEYCODE_DPAD_LEFT; 4563 accel = mX.acceleration; 4564 mY.reset(2); 4565 } 4566 } else if (yOff > 0) { 4567 movement = mY.generate(); 4568 if (movement != 0) { 4569 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4570 : KeyEvent.KEYCODE_DPAD_UP; 4571 accel = mY.acceleration; 4572 mX.reset(2); 4573 } 4574 } 4575 4576 if (keycode != 0) { 4577 if (movement < 0) movement = -movement; 4578 int accelMovement = (int)(movement * accel); 4579 if (DEBUG_TRACKBALL) Log.v(mTag, "Move: movement=" + movement 4580 + " accelMovement=" + accelMovement 4581 + " accel=" + accel); 4582 if (accelMovement > movement) { 4583 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4584 + keycode); 4585 movement--; 4586 int repeatCount = accelMovement - movement; 4587 enqueueInputEvent(new KeyEvent(curTime, curTime, 4588 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4589 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4590 InputDevice.SOURCE_KEYBOARD)); 4591 } 4592 while (movement > 0) { 4593 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4594 + keycode); 4595 movement--; 4596 curTime = SystemClock.uptimeMillis(); 4597 enqueueInputEvent(new KeyEvent(curTime, curTime, 4598 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4599 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4600 InputDevice.SOURCE_KEYBOARD)); 4601 enqueueInputEvent(new KeyEvent(curTime, curTime, 4602 KeyEvent.ACTION_UP, keycode, 0, metaState, 4603 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4604 InputDevice.SOURCE_KEYBOARD)); 4605 } 4606 mLastTime = curTime; 4607 } 4608 } 4609 4610 public void cancel(MotionEvent event) { 4611 mLastTime = Integer.MIN_VALUE; 4612 4613 // If we reach this, we consumed a trackball event. 4614 // Because we will not translate the trackball event into a key event, 4615 // touch mode will not exit, so we exit touch mode here. 4616 if (mView != null && mAdded) { 4617 ensureTouchMode(false); 4618 } 4619 } 4620 } 4621 4622 /** 4623 * Maintains state information for a single trackball axis, generating 4624 * discrete (DPAD) movements based on raw trackball motion. 4625 */ 4626 static final class TrackballAxis { 4627 /** 4628 * The maximum amount of acceleration we will apply. 4629 */ 4630 static final float MAX_ACCELERATION = 20; 4631 4632 /** 4633 * The maximum amount of time (in milliseconds) between events in order 4634 * for us to consider the user to be doing fast trackball movements, 4635 * and thus apply an acceleration. 4636 */ 4637 static final long FAST_MOVE_TIME = 150; 4638 4639 /** 4640 * Scaling factor to the time (in milliseconds) between events to how 4641 * much to multiple/divide the current acceleration. When movement 4642 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4643 * FAST_MOVE_TIME it divides it. 4644 */ 4645 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4646 4647 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4648 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4649 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4650 4651 float position; 4652 float acceleration = 1; 4653 long lastMoveTime = 0; 4654 int step; 4655 int dir; 4656 int nonAccelMovement; 4657 4658 void reset(int _step) { 4659 position = 0; 4660 acceleration = 1; 4661 lastMoveTime = 0; 4662 step = _step; 4663 dir = 0; 4664 } 4665 4666 /** 4667 * Add trackball movement into the state. If the direction of movement 4668 * has been reversed, the state is reset before adding the 4669 * movement (so that you don't have to compensate for any previously 4670 * collected movement before see the result of the movement in the 4671 * new direction). 4672 * 4673 * @return Returns the absolute value of the amount of movement 4674 * collected so far. 4675 */ 4676 float collect(float off, long time, String axis) { 4677 long normTime; 4678 if (off > 0) { 4679 normTime = (long)(off * FAST_MOVE_TIME); 4680 if (dir < 0) { 4681 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4682 position = 0; 4683 step = 0; 4684 acceleration = 1; 4685 lastMoveTime = 0; 4686 } 4687 dir = 1; 4688 } else if (off < 0) { 4689 normTime = (long)((-off) * FAST_MOVE_TIME); 4690 if (dir > 0) { 4691 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4692 position = 0; 4693 step = 0; 4694 acceleration = 1; 4695 lastMoveTime = 0; 4696 } 4697 dir = -1; 4698 } else { 4699 normTime = 0; 4700 } 4701 4702 // The number of milliseconds between each movement that is 4703 // considered "normal" and will not result in any acceleration 4704 // or deceleration, scaled by the offset we have here. 4705 if (normTime > 0) { 4706 long delta = time - lastMoveTime; 4707 lastMoveTime = time; 4708 float acc = acceleration; 4709 if (delta < normTime) { 4710 // The user is scrolling rapidly, so increase acceleration. 4711 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4712 if (scale > 1) acc *= scale; 4713 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4714 + off + " normTime=" + normTime + " delta=" + delta 4715 + " scale=" + scale + " acc=" + acc); 4716 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4717 } else { 4718 // The user is scrolling slowly, so decrease acceleration. 4719 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4720 if (scale > 1) acc /= scale; 4721 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4722 + off + " normTime=" + normTime + " delta=" + delta 4723 + " scale=" + scale + " acc=" + acc); 4724 acceleration = acc > 1 ? acc : 1; 4725 } 4726 } 4727 position += off; 4728 return Math.abs(position); 4729 } 4730 4731 /** 4732 * Generate the number of discrete movement events appropriate for 4733 * the currently collected trackball movement. 4734 * 4735 * @return Returns the number of discrete movements, either positive 4736 * or negative, or 0 if there is not enough trackball movement yet 4737 * for a discrete movement. 4738 */ 4739 int generate() { 4740 int movement = 0; 4741 nonAccelMovement = 0; 4742 do { 4743 final int dir = position >= 0 ? 1 : -1; 4744 switch (step) { 4745 // If we are going to execute the first step, then we want 4746 // to do this as soon as possible instead of waiting for 4747 // a full movement, in order to make things look responsive. 4748 case 0: 4749 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4750 return movement; 4751 } 4752 movement += dir; 4753 nonAccelMovement += dir; 4754 step = 1; 4755 break; 4756 // If we have generated the first movement, then we need 4757 // to wait for the second complete trackball motion before 4758 // generating the second discrete movement. 4759 case 1: 4760 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4761 return movement; 4762 } 4763 movement += dir; 4764 nonAccelMovement += dir; 4765 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4766 step = 2; 4767 break; 4768 // After the first two, we generate discrete movements 4769 // consistently with the trackball, applying an acceleration 4770 // if the trackball is moving quickly. This is a simple 4771 // acceleration on top of what we already compute based 4772 // on how quickly the wheel is being turned, to apply 4773 // a longer increasing acceleration to continuous movement 4774 // in one direction. 4775 default: 4776 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4777 return movement; 4778 } 4779 movement += dir; 4780 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4781 float acc = acceleration; 4782 acc *= 1.1f; 4783 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4784 break; 4785 } 4786 } while (true); 4787 } 4788 } 4789 4790 /** 4791 * Creates dpad events from unhandled joystick movements. 4792 */ 4793 final class SyntheticJoystickHandler extends Handler { 4794 private final static String TAG = "SyntheticJoystickHandler"; 4795 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4796 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4797 4798 private int mLastXDirection; 4799 private int mLastYDirection; 4800 private int mLastXKeyCode; 4801 private int mLastYKeyCode; 4802 4803 public SyntheticJoystickHandler() { 4804 super(true); 4805 } 4806 4807 @Override 4808 public void handleMessage(Message msg) { 4809 switch (msg.what) { 4810 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4811 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4812 KeyEvent oldEvent = (KeyEvent)msg.obj; 4813 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4814 SystemClock.uptimeMillis(), 4815 oldEvent.getRepeatCount() + 1); 4816 if (mAttachInfo.mHasWindowFocus) { 4817 enqueueInputEvent(e); 4818 Message m = obtainMessage(msg.what, e); 4819 m.setAsynchronous(true); 4820 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4821 } 4822 } break; 4823 } 4824 } 4825 4826 public void process(MotionEvent event) { 4827 switch(event.getActionMasked()) { 4828 case MotionEvent.ACTION_CANCEL: 4829 cancel(event); 4830 break; 4831 case MotionEvent.ACTION_MOVE: 4832 update(event, true); 4833 break; 4834 default: 4835 Log.w(mTag, "Unexpected action: " + event.getActionMasked()); 4836 } 4837 } 4838 4839 private void cancel(MotionEvent event) { 4840 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4841 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4842 update(event, false); 4843 } 4844 4845 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4846 final long time = event.getEventTime(); 4847 final int metaState = event.getMetaState(); 4848 final int deviceId = event.getDeviceId(); 4849 final int source = event.getSource(); 4850 4851 int xDirection = joystickAxisValueToDirection( 4852 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4853 if (xDirection == 0) { 4854 xDirection = joystickAxisValueToDirection(event.getX()); 4855 } 4856 4857 int yDirection = joystickAxisValueToDirection( 4858 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4859 if (yDirection == 0) { 4860 yDirection = joystickAxisValueToDirection(event.getY()); 4861 } 4862 4863 if (xDirection != mLastXDirection) { 4864 if (mLastXKeyCode != 0) { 4865 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4866 enqueueInputEvent(new KeyEvent(time, time, 4867 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4868 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4869 mLastXKeyCode = 0; 4870 } 4871 4872 mLastXDirection = xDirection; 4873 4874 if (xDirection != 0 && synthesizeNewKeys) { 4875 mLastXKeyCode = xDirection > 0 4876 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4877 final KeyEvent e = new KeyEvent(time, time, 4878 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4879 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4880 enqueueInputEvent(e); 4881 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4882 m.setAsynchronous(true); 4883 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4884 } 4885 } 4886 4887 if (yDirection != mLastYDirection) { 4888 if (mLastYKeyCode != 0) { 4889 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4890 enqueueInputEvent(new KeyEvent(time, time, 4891 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4892 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4893 mLastYKeyCode = 0; 4894 } 4895 4896 mLastYDirection = yDirection; 4897 4898 if (yDirection != 0 && synthesizeNewKeys) { 4899 mLastYKeyCode = yDirection > 0 4900 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4901 final KeyEvent e = new KeyEvent(time, time, 4902 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4903 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4904 enqueueInputEvent(e); 4905 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4906 m.setAsynchronous(true); 4907 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4908 } 4909 } 4910 } 4911 4912 private int joystickAxisValueToDirection(float value) { 4913 if (value >= 0.5f) { 4914 return 1; 4915 } else if (value <= -0.5f) { 4916 return -1; 4917 } else { 4918 return 0; 4919 } 4920 } 4921 } 4922 4923 /** 4924 * Creates dpad events from unhandled touch navigation movements. 4925 */ 4926 final class SyntheticTouchNavigationHandler extends Handler { 4927 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4928 private static final boolean LOCAL_DEBUG = false; 4929 4930 // Assumed nominal width and height in millimeters of a touch navigation pad, 4931 // if no resolution information is available from the input system. 4932 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4933 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4934 4935 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4936 4937 // The nominal distance traveled to move by one unit. 4938 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4939 4940 // Minimum and maximum fling velocity in ticks per second. 4941 // The minimum velocity should be set such that we perform enough ticks per 4942 // second that the fling appears to be fluid. For example, if we set the minimum 4943 // to 2 ticks per second, then there may be up to half a second delay between the next 4944 // to last and last ticks which is noticeably discrete and jerky. This value should 4945 // probably not be set to anything less than about 4. 4946 // If fling accuracy is a problem then consider tuning the tick distance instead. 4947 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4948 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4949 4950 // Fling velocity decay factor applied after each new key is emitted. 4951 // This parameter controls the deceleration and overall duration of the fling. 4952 // The fling stops automatically when its velocity drops below the minimum 4953 // fling velocity defined above. 4954 private static final float FLING_TICK_DECAY = 0.8f; 4955 4956 /* The input device that we are tracking. */ 4957 4958 private int mCurrentDeviceId = -1; 4959 private int mCurrentSource; 4960 private boolean mCurrentDeviceSupported; 4961 4962 /* Configuration for the current input device. */ 4963 4964 // The scaled tick distance. A movement of this amount should generally translate 4965 // into a single dpad event in a given direction. 4966 private float mConfigTickDistance; 4967 4968 // The minimum and maximum scaled fling velocity. 4969 private float mConfigMinFlingVelocity; 4970 private float mConfigMaxFlingVelocity; 4971 4972 /* Tracking state. */ 4973 4974 // The velocity tracker for detecting flings. 4975 private VelocityTracker mVelocityTracker; 4976 4977 // The active pointer id, or -1 if none. 4978 private int mActivePointerId = -1; 4979 4980 // Location where tracking started. 4981 private float mStartX; 4982 private float mStartY; 4983 4984 // Most recently observed position. 4985 private float mLastX; 4986 private float mLastY; 4987 4988 // Accumulated movement delta since the last direction key was sent. 4989 private float mAccumulatedX; 4990 private float mAccumulatedY; 4991 4992 // Set to true if any movement was delivered to the app. 4993 // Implies that tap slop was exceeded. 4994 private boolean mConsumedMovement; 4995 4996 // The most recently sent key down event. 4997 // The keycode remains set until the direction changes or a fling ends 4998 // so that repeated key events may be generated as required. 4999 private long mPendingKeyDownTime; 5000 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5001 private int mPendingKeyRepeatCount; 5002 private int mPendingKeyMetaState; 5003 5004 // The current fling velocity while a fling is in progress. 5005 private boolean mFlinging; 5006 private float mFlingVelocity; 5007 5008 public SyntheticTouchNavigationHandler() { 5009 super(true); 5010 } 5011 5012 public void process(MotionEvent event) { 5013 // Update the current device information. 5014 final long time = event.getEventTime(); 5015 final int deviceId = event.getDeviceId(); 5016 final int source = event.getSource(); 5017 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 5018 finishKeys(time); 5019 finishTracking(time); 5020 mCurrentDeviceId = deviceId; 5021 mCurrentSource = source; 5022 mCurrentDeviceSupported = false; 5023 InputDevice device = event.getDevice(); 5024 if (device != null) { 5025 // In order to support an input device, we must know certain 5026 // characteristics about it, such as its size and resolution. 5027 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 5028 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 5029 if (xRange != null && yRange != null) { 5030 mCurrentDeviceSupported = true; 5031 5032 // Infer the resolution if it not actually known. 5033 float xRes = xRange.getResolution(); 5034 if (xRes <= 0) { 5035 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 5036 } 5037 float yRes = yRange.getResolution(); 5038 if (yRes <= 0) { 5039 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 5040 } 5041 float nominalRes = (xRes + yRes) * 0.5f; 5042 5043 // Precompute all of the configuration thresholds we will need. 5044 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 5045 mConfigMinFlingVelocity = 5046 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5047 mConfigMaxFlingVelocity = 5048 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5049 5050 if (LOCAL_DEBUG) { 5051 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 5052 + " (" + Integer.toHexString(mCurrentSource) + "): " 5053 + ", mConfigTickDistance=" + mConfigTickDistance 5054 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 5055 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 5056 } 5057 } 5058 } 5059 } 5060 if (!mCurrentDeviceSupported) { 5061 return; 5062 } 5063 5064 // Handle the event. 5065 final int action = event.getActionMasked(); 5066 switch (action) { 5067 case MotionEvent.ACTION_DOWN: { 5068 boolean caughtFling = mFlinging; 5069 finishKeys(time); 5070 finishTracking(time); 5071 mActivePointerId = event.getPointerId(0); 5072 mVelocityTracker = VelocityTracker.obtain(); 5073 mVelocityTracker.addMovement(event); 5074 mStartX = event.getX(); 5075 mStartY = event.getY(); 5076 mLastX = mStartX; 5077 mLastY = mStartY; 5078 mAccumulatedX = 0; 5079 mAccumulatedY = 0; 5080 5081 // If we caught a fling, then pretend that the tap slop has already 5082 // been exceeded to suppress taps whose only purpose is to stop the fling. 5083 mConsumedMovement = caughtFling; 5084 break; 5085 } 5086 5087 case MotionEvent.ACTION_MOVE: 5088 case MotionEvent.ACTION_UP: { 5089 if (mActivePointerId < 0) { 5090 break; 5091 } 5092 final int index = event.findPointerIndex(mActivePointerId); 5093 if (index < 0) { 5094 finishKeys(time); 5095 finishTracking(time); 5096 break; 5097 } 5098 5099 mVelocityTracker.addMovement(event); 5100 final float x = event.getX(index); 5101 final float y = event.getY(index); 5102 mAccumulatedX += x - mLastX; 5103 mAccumulatedY += y - mLastY; 5104 mLastX = x; 5105 mLastY = y; 5106 5107 // Consume any accumulated movement so far. 5108 final int metaState = event.getMetaState(); 5109 consumeAccumulatedMovement(time, metaState); 5110 5111 // Detect taps and flings. 5112 if (action == MotionEvent.ACTION_UP) { 5113 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5114 // It might be a fling. 5115 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 5116 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 5117 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 5118 if (!startFling(time, vx, vy)) { 5119 finishKeys(time); 5120 } 5121 } 5122 finishTracking(time); 5123 } 5124 break; 5125 } 5126 5127 case MotionEvent.ACTION_CANCEL: { 5128 finishKeys(time); 5129 finishTracking(time); 5130 break; 5131 } 5132 } 5133 } 5134 5135 public void cancel(MotionEvent event) { 5136 if (mCurrentDeviceId == event.getDeviceId() 5137 && mCurrentSource == event.getSource()) { 5138 final long time = event.getEventTime(); 5139 finishKeys(time); 5140 finishTracking(time); 5141 } 5142 } 5143 5144 private void finishKeys(long time) { 5145 cancelFling(); 5146 sendKeyUp(time); 5147 } 5148 5149 private void finishTracking(long time) { 5150 if (mActivePointerId >= 0) { 5151 mActivePointerId = -1; 5152 mVelocityTracker.recycle(); 5153 mVelocityTracker = null; 5154 } 5155 } 5156 5157 private void consumeAccumulatedMovement(long time, int metaState) { 5158 final float absX = Math.abs(mAccumulatedX); 5159 final float absY = Math.abs(mAccumulatedY); 5160 if (absX >= absY) { 5161 if (absX >= mConfigTickDistance) { 5162 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 5163 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 5164 mAccumulatedY = 0; 5165 mConsumedMovement = true; 5166 } 5167 } else { 5168 if (absY >= mConfigTickDistance) { 5169 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 5170 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 5171 mAccumulatedX = 0; 5172 mConsumedMovement = true; 5173 } 5174 } 5175 } 5176 5177 private float consumeAccumulatedMovement(long time, int metaState, 5178 float accumulator, int negativeKeyCode, int positiveKeyCode) { 5179 while (accumulator <= -mConfigTickDistance) { 5180 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 5181 accumulator += mConfigTickDistance; 5182 } 5183 while (accumulator >= mConfigTickDistance) { 5184 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 5185 accumulator -= mConfigTickDistance; 5186 } 5187 return accumulator; 5188 } 5189 5190 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 5191 if (mPendingKeyCode != keyCode) { 5192 sendKeyUp(time); 5193 mPendingKeyDownTime = time; 5194 mPendingKeyCode = keyCode; 5195 mPendingKeyRepeatCount = 0; 5196 } else { 5197 mPendingKeyRepeatCount += 1; 5198 } 5199 mPendingKeyMetaState = metaState; 5200 5201 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 5202 // but it doesn't quite make sense when simulating the events in this way. 5203 if (LOCAL_DEBUG) { 5204 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 5205 + ", repeatCount=" + mPendingKeyRepeatCount 5206 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5207 } 5208 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5209 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 5210 mPendingKeyMetaState, mCurrentDeviceId, 5211 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 5212 } 5213 5214 private void sendKeyUp(long time) { 5215 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5216 if (LOCAL_DEBUG) { 5217 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 5218 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5219 } 5220 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5221 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 5222 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 5223 mCurrentSource)); 5224 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5225 } 5226 } 5227 5228 private boolean startFling(long time, float vx, float vy) { 5229 if (LOCAL_DEBUG) { 5230 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 5231 + ", min=" + mConfigMinFlingVelocity); 5232 } 5233 5234 // Flings must be oriented in the same direction as the preceding movements. 5235 switch (mPendingKeyCode) { 5236 case KeyEvent.KEYCODE_DPAD_LEFT: 5237 if (-vx >= mConfigMinFlingVelocity 5238 && Math.abs(vy) < mConfigMinFlingVelocity) { 5239 mFlingVelocity = -vx; 5240 break; 5241 } 5242 return false; 5243 5244 case KeyEvent.KEYCODE_DPAD_RIGHT: 5245 if (vx >= mConfigMinFlingVelocity 5246 && Math.abs(vy) < mConfigMinFlingVelocity) { 5247 mFlingVelocity = vx; 5248 break; 5249 } 5250 return false; 5251 5252 case KeyEvent.KEYCODE_DPAD_UP: 5253 if (-vy >= mConfigMinFlingVelocity 5254 && Math.abs(vx) < mConfigMinFlingVelocity) { 5255 mFlingVelocity = -vy; 5256 break; 5257 } 5258 return false; 5259 5260 case KeyEvent.KEYCODE_DPAD_DOWN: 5261 if (vy >= mConfigMinFlingVelocity 5262 && Math.abs(vx) < mConfigMinFlingVelocity) { 5263 mFlingVelocity = vy; 5264 break; 5265 } 5266 return false; 5267 } 5268 5269 // Post the first fling event. 5270 mFlinging = postFling(time); 5271 return mFlinging; 5272 } 5273 5274 private boolean postFling(long time) { 5275 // The idea here is to estimate the time when the pointer would have 5276 // traveled one tick distance unit given the current fling velocity. 5277 // This effect creates continuity of motion. 5278 if (mFlingVelocity >= mConfigMinFlingVelocity) { 5279 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 5280 postAtTime(mFlingRunnable, time + delay); 5281 if (LOCAL_DEBUG) { 5282 Log.d(LOCAL_TAG, "Posted fling: velocity=" 5283 + mFlingVelocity + ", delay=" + delay 5284 + ", keyCode=" + mPendingKeyCode); 5285 } 5286 return true; 5287 } 5288 return false; 5289 } 5290 5291 private void cancelFling() { 5292 if (mFlinging) { 5293 removeCallbacks(mFlingRunnable); 5294 mFlinging = false; 5295 } 5296 } 5297 5298 private final Runnable mFlingRunnable = new Runnable() { 5299 @Override 5300 public void run() { 5301 final long time = SystemClock.uptimeMillis(); 5302 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5303 mFlingVelocity *= FLING_TICK_DECAY; 5304 if (!postFling(time)) { 5305 mFlinging = false; 5306 finishKeys(time); 5307 } 5308 } 5309 }; 5310 } 5311 5312 final class SyntheticKeyboardHandler { 5313 public void process(KeyEvent event) { 5314 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5315 return; 5316 } 5317 5318 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5319 final int keyCode = event.getKeyCode(); 5320 final int metaState = event.getMetaState(); 5321 5322 // Check for fallback actions specified by the key character map. 5323 KeyCharacterMap.FallbackAction fallbackAction = 5324 kcm.getFallbackAction(keyCode, metaState); 5325 if (fallbackAction != null) { 5326 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5327 KeyEvent fallbackEvent = KeyEvent.obtain( 5328 event.getDownTime(), event.getEventTime(), 5329 event.getAction(), fallbackAction.keyCode, 5330 event.getRepeatCount(), fallbackAction.metaState, 5331 event.getDeviceId(), event.getScanCode(), 5332 flags, event.getSource(), null); 5333 fallbackAction.recycle(); 5334 enqueueInputEvent(fallbackEvent); 5335 } 5336 } 5337 } 5338 5339 /** 5340 * Returns true if the key is used for keyboard navigation. 5341 * @param keyEvent The key event. 5342 * @return True if the key is used for keyboard navigation. 5343 */ 5344 private static boolean isNavigationKey(KeyEvent keyEvent) { 5345 switch (keyEvent.getKeyCode()) { 5346 case KeyEvent.KEYCODE_DPAD_LEFT: 5347 case KeyEvent.KEYCODE_DPAD_RIGHT: 5348 case KeyEvent.KEYCODE_DPAD_UP: 5349 case KeyEvent.KEYCODE_DPAD_DOWN: 5350 case KeyEvent.KEYCODE_DPAD_CENTER: 5351 case KeyEvent.KEYCODE_PAGE_UP: 5352 case KeyEvent.KEYCODE_PAGE_DOWN: 5353 case KeyEvent.KEYCODE_MOVE_HOME: 5354 case KeyEvent.KEYCODE_MOVE_END: 5355 case KeyEvent.KEYCODE_TAB: 5356 case KeyEvent.KEYCODE_SPACE: 5357 case KeyEvent.KEYCODE_ENTER: 5358 return true; 5359 } 5360 return false; 5361 } 5362 5363 /** 5364 * Returns true if the key is used for typing. 5365 * @param keyEvent The key event. 5366 * @return True if the key is used for typing. 5367 */ 5368 private static boolean isTypingKey(KeyEvent keyEvent) { 5369 return keyEvent.getUnicodeChar() > 0; 5370 } 5371 5372 /** 5373 * See if the key event means we should leave touch mode (and leave touch mode if so). 5374 * @param event The key event. 5375 * @return Whether this key event should be consumed (meaning the act of 5376 * leaving touch mode alone is considered the event). 5377 */ 5378 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5379 // Only relevant in touch mode. 5380 if (!mAttachInfo.mInTouchMode) { 5381 return false; 5382 } 5383 5384 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5385 final int action = event.getAction(); 5386 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5387 return false; 5388 } 5389 5390 // Don't leave touch mode if the IME told us not to. 5391 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5392 return false; 5393 } 5394 5395 // If the key can be used for keyboard navigation then leave touch mode 5396 // and select a focused view if needed (in ensureTouchMode). 5397 // When a new focused view is selected, we consume the navigation key because 5398 // navigation doesn't make much sense unless a view already has focus so 5399 // the key's purpose is to set focus. 5400 if (isNavigationKey(event)) { 5401 return ensureTouchMode(false); 5402 } 5403 5404 // If the key can be used for typing then leave touch mode 5405 // and select a focused view if needed (in ensureTouchMode). 5406 // Always allow the view to process the typing key. 5407 if (isTypingKey(event)) { 5408 ensureTouchMode(false); 5409 return false; 5410 } 5411 5412 return false; 5413 } 5414 5415 /* drag/drop */ 5416 void setLocalDragState(Object obj) { 5417 mLocalDragState = obj; 5418 } 5419 5420 private void handleDragEvent(DragEvent event) { 5421 // From the root, only drag start/end/location are dispatched. entered/exited 5422 // are determined and dispatched by the viewgroup hierarchy, who then report 5423 // that back here for ultimate reporting back to the framework. 5424 if (mView != null && mAdded) { 5425 final int what = event.mAction; 5426 5427 if (what == DragEvent.ACTION_DRAG_EXITED) { 5428 // A direct EXITED event means that the window manager knows we've just crossed 5429 // a window boundary, so the current drag target within this one must have 5430 // just been exited. Send it the usual notifications and then we're done 5431 // for now. 5432 mView.dispatchDragEvent(event); 5433 } else { 5434 // Cache the drag description when the operation starts, then fill it in 5435 // on subsequent calls as a convenience 5436 if (what == DragEvent.ACTION_DRAG_STARTED) { 5437 mCurrentDragView = null; // Start the current-recipient tracking 5438 mDragDescription = event.mClipDescription; 5439 } else { 5440 event.mClipDescription = mDragDescription; 5441 } 5442 5443 // For events with a [screen] location, translate into window coordinates 5444 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5445 mDragPoint.set(event.mX, event.mY); 5446 if (mTranslator != null) { 5447 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5448 } 5449 5450 if (mCurScrollY != 0) { 5451 mDragPoint.offset(0, mCurScrollY); 5452 } 5453 5454 event.mX = mDragPoint.x; 5455 event.mY = mDragPoint.y; 5456 } 5457 5458 // Remember who the current drag target is pre-dispatch 5459 final View prevDragView = mCurrentDragView; 5460 5461 // Now dispatch the drag/drop event 5462 boolean result = mView.dispatchDragEvent(event); 5463 5464 // If we changed apparent drag target, tell the OS about it 5465 if (prevDragView != mCurrentDragView) { 5466 try { 5467 if (prevDragView != null) { 5468 mWindowSession.dragRecipientExited(mWindow); 5469 } 5470 if (mCurrentDragView != null) { 5471 mWindowSession.dragRecipientEntered(mWindow); 5472 } 5473 } catch (RemoteException e) { 5474 Slog.e(mTag, "Unable to note drag target change"); 5475 } 5476 } 5477 5478 // Report the drop result when we're done 5479 if (what == DragEvent.ACTION_DROP) { 5480 mDragDescription = null; 5481 try { 5482 Log.i(mTag, "Reporting drop result: " + result); 5483 mWindowSession.reportDropResult(mWindow, result); 5484 } catch (RemoteException e) { 5485 Log.e(mTag, "Unable to report drop result"); 5486 } 5487 } 5488 5489 // When the drag operation ends, reset drag-related state 5490 if (what == DragEvent.ACTION_DRAG_ENDED) { 5491 setLocalDragState(null); 5492 mAttachInfo.mDragToken = null; 5493 if (mAttachInfo.mDragSurface != null) { 5494 mAttachInfo.mDragSurface.release(); 5495 mAttachInfo.mDragSurface = null; 5496 } 5497 } 5498 } 5499 } 5500 event.recycle(); 5501 } 5502 5503 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5504 if (mSeq != args.seq) { 5505 // The sequence has changed, so we need to update our value and make 5506 // sure to do a traversal afterward so the window manager is given our 5507 // most recent data. 5508 mSeq = args.seq; 5509 mAttachInfo.mForceReportNewAttributes = true; 5510 scheduleTraversals(); 5511 } 5512 if (mView == null) return; 5513 if (args.localChanges != 0) { 5514 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5515 } 5516 5517 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5518 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5519 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5520 mView.dispatchSystemUiVisibilityChanged(visibility); 5521 } 5522 } 5523 5524 public void handleDispatchWindowShown() { 5525 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5526 } 5527 5528 public void handleRequestKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 5529 Bundle data = new Bundle(); 5530 ArrayList<KeyboardShortcutGroup> list = new ArrayList<>(); 5531 if (mView != null) { 5532 mView.requestKeyboardShortcuts(list, deviceId); 5533 } 5534 data.putParcelableArrayList(WindowManager.PARCEL_KEY_SHORTCUTS_ARRAY, list); 5535 try { 5536 receiver.send(0, data); 5537 } catch (RemoteException e) { 5538 } 5539 } 5540 5541 public void getLastTouchPoint(Point outLocation) { 5542 outLocation.x = (int) mLastTouchPoint.x; 5543 outLocation.y = (int) mLastTouchPoint.y; 5544 } 5545 5546 public int getLastTouchSource() { 5547 return mLastTouchSource; 5548 } 5549 5550 public void setDragFocus(View newDragTarget) { 5551 if (mCurrentDragView != newDragTarget) { 5552 mCurrentDragView = newDragTarget; 5553 } 5554 } 5555 5556 private AudioManager getAudioManager() { 5557 if (mView == null) { 5558 throw new IllegalStateException("getAudioManager called when there is no mView"); 5559 } 5560 if (mAudioManager == null) { 5561 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5562 } 5563 return mAudioManager; 5564 } 5565 5566 public AccessibilityInteractionController getAccessibilityInteractionController() { 5567 if (mView == null) { 5568 throw new IllegalStateException("getAccessibilityInteractionController" 5569 + " called when there is no mView"); 5570 } 5571 if (mAccessibilityInteractionController == null) { 5572 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5573 } 5574 return mAccessibilityInteractionController; 5575 } 5576 5577 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5578 boolean insetsPending) throws RemoteException { 5579 5580 float appScale = mAttachInfo.mApplicationScale; 5581 boolean restore = false; 5582 if (params != null && mTranslator != null) { 5583 restore = true; 5584 params.backup(); 5585 mTranslator.translateWindowLayout(params); 5586 } 5587 if (params != null) { 5588 if (DBG) Log.d(mTag, "WindowLayout in layoutWindow:" + params); 5589 } 5590 mPendingConfiguration.seq = 0; 5591 //Log.d(mTag, ">>>>>> CALLING relayout"); 5592 if (params != null && mOrigWindowType != params.type) { 5593 // For compatibility with old apps, don't crash here. 5594 if (mTargetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5595 Slog.w(mTag, "Window type can not be changed after " 5596 + "the window is added; ignoring change of " + mView); 5597 params.type = mOrigWindowType; 5598 } 5599 } 5600 int relayoutResult = mWindowSession.relayout( 5601 mWindow, mSeq, params, 5602 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5603 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5604 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5605 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5606 mPendingStableInsets, mPendingOutsets, mPendingBackDropFrame, mPendingConfiguration, 5607 mSurface); 5608 5609 mPendingAlwaysConsumeNavBar = 5610 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_CONSUME_ALWAYS_NAV_BAR) != 0; 5611 5612 //Log.d(mTag, "<<<<<< BACK FROM relayout"); 5613 if (restore) { 5614 params.restore(); 5615 } 5616 5617 if (mTranslator != null) { 5618 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5619 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5620 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5621 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5622 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5623 } 5624 return relayoutResult; 5625 } 5626 5627 /** 5628 * {@inheritDoc} 5629 */ 5630 @Override 5631 public void playSoundEffect(int effectId) { 5632 checkThread(); 5633 5634 try { 5635 final AudioManager audioManager = getAudioManager(); 5636 5637 switch (effectId) { 5638 case SoundEffectConstants.CLICK: 5639 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5640 return; 5641 case SoundEffectConstants.NAVIGATION_DOWN: 5642 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5643 return; 5644 case SoundEffectConstants.NAVIGATION_LEFT: 5645 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5646 return; 5647 case SoundEffectConstants.NAVIGATION_RIGHT: 5648 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5649 return; 5650 case SoundEffectConstants.NAVIGATION_UP: 5651 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5652 return; 5653 default: 5654 throw new IllegalArgumentException("unknown effect id " + effectId + 5655 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5656 } 5657 } catch (IllegalStateException e) { 5658 // Exception thrown by getAudioManager() when mView is null 5659 Log.e(mTag, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5660 e.printStackTrace(); 5661 } 5662 } 5663 5664 /** 5665 * {@inheritDoc} 5666 */ 5667 @Override 5668 public boolean performHapticFeedback(int effectId, boolean always) { 5669 try { 5670 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5671 } catch (RemoteException e) { 5672 return false; 5673 } 5674 } 5675 5676 /** 5677 * {@inheritDoc} 5678 */ 5679 @Override 5680 public View focusSearch(View focused, int direction) { 5681 checkThread(); 5682 if (!(mView instanceof ViewGroup)) { 5683 return null; 5684 } 5685 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5686 } 5687 5688 public void debug() { 5689 mView.debug(); 5690 } 5691 5692 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5693 String innerPrefix = prefix + " "; 5694 writer.print(prefix); writer.println("ViewRoot:"); 5695 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5696 writer.print(" mRemoved="); writer.println(mRemoved); 5697 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5698 writer.println(mConsumeBatchedInputScheduled); 5699 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5700 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5701 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5702 writer.println(mPendingInputEventCount); 5703 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5704 writer.println(mProcessInputEventsScheduled); 5705 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5706 writer.print(mTraversalScheduled); 5707 writer.print(innerPrefix); writer.print("mIsAmbientMode="); 5708 writer.print(mIsAmbientMode); 5709 if (mTraversalScheduled) { 5710 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5711 } else { 5712 writer.println(); 5713 } 5714 mFirstInputStage.dump(innerPrefix, writer); 5715 5716 mChoreographer.dump(prefix, writer); 5717 5718 writer.print(prefix); writer.println("View Hierarchy:"); 5719 dumpViewHierarchy(innerPrefix, writer, mView); 5720 } 5721 5722 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5723 writer.print(prefix); 5724 if (view == null) { 5725 writer.println("null"); 5726 return; 5727 } 5728 writer.println(view.toString()); 5729 if (!(view instanceof ViewGroup)) { 5730 return; 5731 } 5732 ViewGroup grp = (ViewGroup)view; 5733 final int N = grp.getChildCount(); 5734 if (N <= 0) { 5735 return; 5736 } 5737 prefix = prefix + " "; 5738 for (int i=0; i<N; i++) { 5739 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5740 } 5741 } 5742 5743 public void dumpGfxInfo(int[] info) { 5744 info[0] = info[1] = 0; 5745 if (mView != null) { 5746 getGfxInfo(mView, info); 5747 } 5748 } 5749 5750 private static void getGfxInfo(View view, int[] info) { 5751 RenderNode renderNode = view.mRenderNode; 5752 info[0]++; 5753 if (renderNode != null) { 5754 info[1] += renderNode.getDebugSize(); 5755 } 5756 5757 if (view instanceof ViewGroup) { 5758 ViewGroup group = (ViewGroup) view; 5759 5760 int count = group.getChildCount(); 5761 for (int i = 0; i < count; i++) { 5762 getGfxInfo(group.getChildAt(i), info); 5763 } 5764 } 5765 } 5766 5767 /** 5768 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5769 * @return True, request has been queued. False, request has been completed. 5770 */ 5771 boolean die(boolean immediate) { 5772 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5773 // done by dispatchDetachedFromWindow will cause havoc on return. 5774 if (immediate && !mIsInTraversal) { 5775 doDie(); 5776 return false; 5777 } 5778 5779 if (!mIsDrawing) { 5780 destroyHardwareRenderer(); 5781 } else { 5782 Log.e(mTag, "Attempting to destroy the window while drawing!\n" + 5783 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5784 } 5785 mHandler.sendEmptyMessage(MSG_DIE); 5786 return true; 5787 } 5788 5789 void doDie() { 5790 checkThread(); 5791 if (LOCAL_LOGV) Log.v(mTag, "DIE in " + this + " of " + mSurface); 5792 synchronized (this) { 5793 if (mRemoved) { 5794 return; 5795 } 5796 mRemoved = true; 5797 if (mAdded) { 5798 dispatchDetachedFromWindow(); 5799 } 5800 5801 if (mAdded && !mFirst) { 5802 destroyHardwareRenderer(); 5803 5804 if (mView != null) { 5805 int viewVisibility = mView.getVisibility(); 5806 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5807 if (mWindowAttributesChanged || viewVisibilityChanged) { 5808 // If layout params have been changed, first give them 5809 // to the window manager to make sure it has the correct 5810 // animation info. 5811 try { 5812 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5813 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5814 mWindowSession.finishDrawing(mWindow); 5815 } 5816 } catch (RemoteException e) { 5817 } 5818 } 5819 5820 mSurface.release(); 5821 } 5822 } 5823 5824 mAdded = false; 5825 } 5826 WindowManagerGlobal.getInstance().doRemoveView(this); 5827 } 5828 5829 public void requestUpdateConfiguration(Configuration config) { 5830 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5831 mHandler.sendMessage(msg); 5832 } 5833 5834 public void loadSystemProperties() { 5835 mHandler.post(new Runnable() { 5836 @Override 5837 public void run() { 5838 // Profiling 5839 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5840 profileRendering(mAttachInfo.mHasWindowFocus); 5841 5842 // Hardware rendering 5843 if (mAttachInfo.mHardwareRenderer != null) { 5844 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5845 invalidate(); 5846 } 5847 } 5848 5849 // Layout debugging 5850 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5851 if (layout != mAttachInfo.mDebugLayout) { 5852 mAttachInfo.mDebugLayout = layout; 5853 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5854 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5855 } 5856 } 5857 } 5858 }); 5859 } 5860 5861 private void destroyHardwareRenderer() { 5862 ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5863 5864 if (hardwareRenderer != null) { 5865 if (mView != null) { 5866 hardwareRenderer.destroyHardwareResources(mView); 5867 } 5868 hardwareRenderer.destroy(); 5869 hardwareRenderer.setRequested(false); 5870 5871 mAttachInfo.mHardwareRenderer = null; 5872 mAttachInfo.mHardwareAccelerated = false; 5873 } 5874 } 5875 5876 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5877 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 5878 Configuration newConfig, Rect backDropFrame, boolean forceLayout, 5879 boolean alwaysConsumeNavBar) { 5880 if (DEBUG_LAYOUT) Log.v(mTag, "Resizing " + this + ": frame=" + frame.toShortString() 5881 + " contentInsets=" + contentInsets.toShortString() 5882 + " visibleInsets=" + visibleInsets.toShortString() 5883 + " reportDraw=" + reportDraw 5884 + " backDropFrame=" + backDropFrame); 5885 5886 // Tell all listeners that we are resizing the window so that the chrome can get 5887 // updated as fast as possible on a separate thread, 5888 if (mDragResizing) { 5889 boolean fullscreen = frame.equals(backDropFrame); 5890 synchronized (mWindowCallbacks) { 5891 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 5892 mWindowCallbacks.get(i).onWindowSizeIsChanging(backDropFrame, fullscreen, 5893 visibleInsets, stableInsets); 5894 } 5895 } 5896 } 5897 5898 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5899 if (mTranslator != null) { 5900 mTranslator.translateRectInScreenToAppWindow(frame); 5901 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5902 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5903 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5904 } 5905 SomeArgs args = SomeArgs.obtain(); 5906 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5907 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5908 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5909 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5910 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5911 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5912 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5913 args.arg7 = sameProcessCall ? new Rect(outsets) : outsets; 5914 args.arg8 = sameProcessCall ? new Rect(backDropFrame) : backDropFrame; 5915 args.argi1 = forceLayout ? 1 : 0; 5916 args.argi2 = alwaysConsumeNavBar ? 1 : 0; 5917 msg.obj = args; 5918 mHandler.sendMessage(msg); 5919 } 5920 5921 public void dispatchMoved(int newX, int newY) { 5922 if (DEBUG_LAYOUT) Log.v(mTag, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5923 if (mTranslator != null) { 5924 PointF point = new PointF(newX, newY); 5925 mTranslator.translatePointInScreenToAppWindow(point); 5926 newX = (int) (point.x + 0.5); 5927 newY = (int) (point.y + 0.5); 5928 } 5929 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5930 mHandler.sendMessage(msg); 5931 } 5932 5933 /** 5934 * Represents a pending input event that is waiting in a queue. 5935 * 5936 * Input events are processed in serial order by the timestamp specified by 5937 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5938 * one input event to the application at a time and waits for the application 5939 * to finish handling it before delivering the next one. 5940 * 5941 * However, because the application or IME can synthesize and inject multiple 5942 * key events at a time without going through the input dispatcher, we end up 5943 * needing a queue on the application's side. 5944 */ 5945 private static final class QueuedInputEvent { 5946 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5947 public static final int FLAG_DEFERRED = 1 << 1; 5948 public static final int FLAG_FINISHED = 1 << 2; 5949 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5950 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5951 public static final int FLAG_UNHANDLED = 1 << 5; 5952 5953 public QueuedInputEvent mNext; 5954 5955 public InputEvent mEvent; 5956 public InputEventReceiver mReceiver; 5957 public int mFlags; 5958 5959 public boolean shouldSkipIme() { 5960 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5961 return true; 5962 } 5963 return mEvent instanceof MotionEvent 5964 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5965 } 5966 5967 public boolean shouldSendToSynthesizer() { 5968 if ((mFlags & FLAG_UNHANDLED) != 0) { 5969 return true; 5970 } 5971 5972 return false; 5973 } 5974 5975 @Override 5976 public String toString() { 5977 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5978 boolean hasPrevious = false; 5979 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5980 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5981 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5982 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5983 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5984 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5985 if (!hasPrevious) { 5986 sb.append("0"); 5987 } 5988 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5989 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5990 sb.append(", mEvent=" + mEvent + "}"); 5991 return sb.toString(); 5992 } 5993 5994 private boolean flagToString(String name, int flag, 5995 boolean hasPrevious, StringBuilder sb) { 5996 if ((mFlags & flag) != 0) { 5997 if (hasPrevious) { 5998 sb.append("|"); 5999 } 6000 sb.append(name); 6001 return true; 6002 } 6003 return hasPrevious; 6004 } 6005 } 6006 6007 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 6008 InputEventReceiver receiver, int flags) { 6009 QueuedInputEvent q = mQueuedInputEventPool; 6010 if (q != null) { 6011 mQueuedInputEventPoolSize -= 1; 6012 mQueuedInputEventPool = q.mNext; 6013 q.mNext = null; 6014 } else { 6015 q = new QueuedInputEvent(); 6016 } 6017 6018 q.mEvent = event; 6019 q.mReceiver = receiver; 6020 q.mFlags = flags; 6021 return q; 6022 } 6023 6024 private void recycleQueuedInputEvent(QueuedInputEvent q) { 6025 q.mEvent = null; 6026 q.mReceiver = null; 6027 6028 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 6029 mQueuedInputEventPoolSize += 1; 6030 q.mNext = mQueuedInputEventPool; 6031 mQueuedInputEventPool = q; 6032 } 6033 } 6034 6035 void enqueueInputEvent(InputEvent event) { 6036 enqueueInputEvent(event, null, 0, false); 6037 } 6038 6039 void enqueueInputEvent(InputEvent event, 6040 InputEventReceiver receiver, int flags, boolean processImmediately) { 6041 adjustInputEventForCompatibility(event); 6042 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 6043 6044 // Always enqueue the input event in order, regardless of its time stamp. 6045 // We do this because the application or the IME may inject key events 6046 // in response to touch events and we want to ensure that the injected keys 6047 // are processed in the order they were received and we cannot trust that 6048 // the time stamp of injected events are monotonic. 6049 QueuedInputEvent last = mPendingInputEventTail; 6050 if (last == null) { 6051 mPendingInputEventHead = q; 6052 mPendingInputEventTail = q; 6053 } else { 6054 last.mNext = q; 6055 mPendingInputEventTail = q; 6056 } 6057 mPendingInputEventCount += 1; 6058 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6059 mPendingInputEventCount); 6060 6061 if (processImmediately) { 6062 doProcessInputEvents(); 6063 } else { 6064 scheduleProcessInputEvents(); 6065 } 6066 } 6067 6068 private void scheduleProcessInputEvents() { 6069 if (!mProcessInputEventsScheduled) { 6070 mProcessInputEventsScheduled = true; 6071 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 6072 msg.setAsynchronous(true); 6073 mHandler.sendMessage(msg); 6074 } 6075 } 6076 6077 void doProcessInputEvents() { 6078 // Deliver all pending input events in the queue. 6079 while (mPendingInputEventHead != null) { 6080 QueuedInputEvent q = mPendingInputEventHead; 6081 mPendingInputEventHead = q.mNext; 6082 if (mPendingInputEventHead == null) { 6083 mPendingInputEventTail = null; 6084 } 6085 q.mNext = null; 6086 6087 mPendingInputEventCount -= 1; 6088 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6089 mPendingInputEventCount); 6090 6091 long eventTime = q.mEvent.getEventTimeNano(); 6092 long oldestEventTime = eventTime; 6093 if (q.mEvent instanceof MotionEvent) { 6094 MotionEvent me = (MotionEvent)q.mEvent; 6095 if (me.getHistorySize() > 0) { 6096 oldestEventTime = me.getHistoricalEventTimeNano(0); 6097 } 6098 } 6099 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 6100 6101 deliverInputEvent(q); 6102 } 6103 6104 // We are done processing all input events that we can process right now 6105 // so we can clear the pending flag immediately. 6106 if (mProcessInputEventsScheduled) { 6107 mProcessInputEventsScheduled = false; 6108 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 6109 } 6110 } 6111 6112 private void deliverInputEvent(QueuedInputEvent q) { 6113 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6114 q.mEvent.getSequenceNumber()); 6115 if (mInputEventConsistencyVerifier != null) { 6116 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 6117 } 6118 6119 InputStage stage; 6120 if (q.shouldSendToSynthesizer()) { 6121 stage = mSyntheticInputStage; 6122 } else { 6123 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 6124 } 6125 6126 if (stage != null) { 6127 stage.deliver(q); 6128 } else { 6129 finishInputEvent(q); 6130 } 6131 } 6132 6133 private void finishInputEvent(QueuedInputEvent q) { 6134 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6135 q.mEvent.getSequenceNumber()); 6136 6137 if (q.mReceiver != null) { 6138 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 6139 q.mReceiver.finishInputEvent(q.mEvent, handled); 6140 } else { 6141 q.mEvent.recycleIfNeededAfterDispatch(); 6142 } 6143 6144 recycleQueuedInputEvent(q); 6145 } 6146 6147 private void adjustInputEventForCompatibility(InputEvent e) { 6148 if (mTargetSdkVersion < Build.VERSION_CODES.M && e instanceof MotionEvent) { 6149 MotionEvent motion = (MotionEvent) e; 6150 final int mask = 6151 MotionEvent.BUTTON_STYLUS_PRIMARY | MotionEvent.BUTTON_STYLUS_SECONDARY; 6152 final int buttonState = motion.getButtonState(); 6153 final int compatButtonState = (buttonState & mask) >> 4; 6154 if (compatButtonState != 0) { 6155 motion.setButtonState(buttonState | compatButtonState); 6156 } 6157 } 6158 } 6159 6160 static boolean isTerminalInputEvent(InputEvent event) { 6161 if (event instanceof KeyEvent) { 6162 final KeyEvent keyEvent = (KeyEvent)event; 6163 return keyEvent.getAction() == KeyEvent.ACTION_UP; 6164 } else { 6165 final MotionEvent motionEvent = (MotionEvent)event; 6166 final int action = motionEvent.getAction(); 6167 return action == MotionEvent.ACTION_UP 6168 || action == MotionEvent.ACTION_CANCEL 6169 || action == MotionEvent.ACTION_HOVER_EXIT; 6170 } 6171 } 6172 6173 void scheduleConsumeBatchedInput() { 6174 if (!mConsumeBatchedInputScheduled) { 6175 mConsumeBatchedInputScheduled = true; 6176 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 6177 mConsumedBatchedInputRunnable, null); 6178 } 6179 } 6180 6181 void unscheduleConsumeBatchedInput() { 6182 if (mConsumeBatchedInputScheduled) { 6183 mConsumeBatchedInputScheduled = false; 6184 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 6185 mConsumedBatchedInputRunnable, null); 6186 } 6187 } 6188 6189 void scheduleConsumeBatchedInputImmediately() { 6190 if (!mConsumeBatchedInputImmediatelyScheduled) { 6191 unscheduleConsumeBatchedInput(); 6192 mConsumeBatchedInputImmediatelyScheduled = true; 6193 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 6194 } 6195 } 6196 6197 void doConsumeBatchedInput(long frameTimeNanos) { 6198 if (mConsumeBatchedInputScheduled) { 6199 mConsumeBatchedInputScheduled = false; 6200 if (mInputEventReceiver != null) { 6201 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 6202 && frameTimeNanos != -1) { 6203 // If we consumed a batch here, we want to go ahead and schedule the 6204 // consumption of batched input events on the next frame. Otherwise, we would 6205 // wait until we have more input events pending and might get starved by other 6206 // things occurring in the process. If the frame time is -1, however, then 6207 // we're in a non-batching mode, so there's no need to schedule this. 6208 scheduleConsumeBatchedInput(); 6209 } 6210 } 6211 doProcessInputEvents(); 6212 } 6213 } 6214 6215 final class TraversalRunnable implements Runnable { 6216 @Override 6217 public void run() { 6218 doTraversal(); 6219 } 6220 } 6221 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 6222 6223 final class WindowInputEventReceiver extends InputEventReceiver { 6224 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 6225 super(inputChannel, looper); 6226 } 6227 6228 @Override 6229 public void onInputEvent(InputEvent event) { 6230 enqueueInputEvent(event, this, 0, true); 6231 } 6232 6233 @Override 6234 public void onBatchedInputEventPending() { 6235 if (mUnbufferedInputDispatch) { 6236 super.onBatchedInputEventPending(); 6237 } else { 6238 scheduleConsumeBatchedInput(); 6239 } 6240 } 6241 6242 @Override 6243 public void dispose() { 6244 unscheduleConsumeBatchedInput(); 6245 super.dispose(); 6246 } 6247 } 6248 WindowInputEventReceiver mInputEventReceiver; 6249 6250 final class ConsumeBatchedInputRunnable implements Runnable { 6251 @Override 6252 public void run() { 6253 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 6254 } 6255 } 6256 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 6257 new ConsumeBatchedInputRunnable(); 6258 boolean mConsumeBatchedInputScheduled; 6259 6260 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 6261 @Override 6262 public void run() { 6263 doConsumeBatchedInput(-1); 6264 } 6265 } 6266 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 6267 new ConsumeBatchedInputImmediatelyRunnable(); 6268 boolean mConsumeBatchedInputImmediatelyScheduled; 6269 6270 final class InvalidateOnAnimationRunnable implements Runnable { 6271 private boolean mPosted; 6272 private final ArrayList<View> mViews = new ArrayList<View>(); 6273 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 6274 new ArrayList<AttachInfo.InvalidateInfo>(); 6275 private View[] mTempViews; 6276 private AttachInfo.InvalidateInfo[] mTempViewRects; 6277 6278 public void addView(View view) { 6279 synchronized (this) { 6280 mViews.add(view); 6281 postIfNeededLocked(); 6282 } 6283 } 6284 6285 public void addViewRect(AttachInfo.InvalidateInfo info) { 6286 synchronized (this) { 6287 mViewRects.add(info); 6288 postIfNeededLocked(); 6289 } 6290 } 6291 6292 public void removeView(View view) { 6293 synchronized (this) { 6294 mViews.remove(view); 6295 6296 for (int i = mViewRects.size(); i-- > 0; ) { 6297 AttachInfo.InvalidateInfo info = mViewRects.get(i); 6298 if (info.target == view) { 6299 mViewRects.remove(i); 6300 info.recycle(); 6301 } 6302 } 6303 6304 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 6305 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 6306 mPosted = false; 6307 } 6308 } 6309 } 6310 6311 @Override 6312 public void run() { 6313 final int viewCount; 6314 final int viewRectCount; 6315 synchronized (this) { 6316 mPosted = false; 6317 6318 viewCount = mViews.size(); 6319 if (viewCount != 0) { 6320 mTempViews = mViews.toArray(mTempViews != null 6321 ? mTempViews : new View[viewCount]); 6322 mViews.clear(); 6323 } 6324 6325 viewRectCount = mViewRects.size(); 6326 if (viewRectCount != 0) { 6327 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6328 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6329 mViewRects.clear(); 6330 } 6331 } 6332 6333 for (int i = 0; i < viewCount; i++) { 6334 mTempViews[i].invalidate(); 6335 mTempViews[i] = null; 6336 } 6337 6338 for (int i = 0; i < viewRectCount; i++) { 6339 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6340 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6341 info.recycle(); 6342 } 6343 } 6344 6345 private void postIfNeededLocked() { 6346 if (!mPosted) { 6347 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6348 mPosted = true; 6349 } 6350 } 6351 } 6352 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6353 new InvalidateOnAnimationRunnable(); 6354 6355 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6356 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6357 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6358 } 6359 6360 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6361 long delayMilliseconds) { 6362 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6363 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6364 } 6365 6366 public void dispatchInvalidateOnAnimation(View view) { 6367 mInvalidateOnAnimationRunnable.addView(view); 6368 } 6369 6370 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6371 mInvalidateOnAnimationRunnable.addViewRect(info); 6372 } 6373 6374 public void cancelInvalidate(View view) { 6375 mHandler.removeMessages(MSG_INVALIDATE, view); 6376 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6377 // them to the pool 6378 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6379 mInvalidateOnAnimationRunnable.removeView(view); 6380 } 6381 6382 public void dispatchInputEvent(InputEvent event) { 6383 dispatchInputEvent(event, null); 6384 } 6385 6386 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6387 SomeArgs args = SomeArgs.obtain(); 6388 args.arg1 = event; 6389 args.arg2 = receiver; 6390 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6391 msg.setAsynchronous(true); 6392 mHandler.sendMessage(msg); 6393 } 6394 6395 public void synthesizeInputEvent(InputEvent event) { 6396 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6397 msg.setAsynchronous(true); 6398 mHandler.sendMessage(msg); 6399 } 6400 6401 public void dispatchKeyFromIme(KeyEvent event) { 6402 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6403 msg.setAsynchronous(true); 6404 mHandler.sendMessage(msg); 6405 } 6406 6407 /** 6408 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6409 * 6410 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6411 * passes in. 6412 */ 6413 public void dispatchUnhandledInputEvent(InputEvent event) { 6414 if (event instanceof MotionEvent) { 6415 event = MotionEvent.obtain((MotionEvent) event); 6416 } 6417 synthesizeInputEvent(event); 6418 } 6419 6420 public void dispatchAppVisibility(boolean visible) { 6421 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6422 msg.arg1 = visible ? 1 : 0; 6423 mHandler.sendMessage(msg); 6424 } 6425 6426 public void dispatchGetNewSurface() { 6427 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6428 mHandler.sendMessage(msg); 6429 } 6430 6431 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6432 Message msg = Message.obtain(); 6433 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6434 msg.arg1 = hasFocus ? 1 : 0; 6435 msg.arg2 = inTouchMode ? 1 : 0; 6436 mHandler.sendMessage(msg); 6437 } 6438 6439 public void dispatchWindowShown() { 6440 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6441 } 6442 6443 public void dispatchCloseSystemDialogs(String reason) { 6444 Message msg = Message.obtain(); 6445 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6446 msg.obj = reason; 6447 mHandler.sendMessage(msg); 6448 } 6449 6450 public void dispatchDragEvent(DragEvent event) { 6451 final int what; 6452 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6453 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6454 mHandler.removeMessages(what); 6455 } else { 6456 what = MSG_DISPATCH_DRAG_EVENT; 6457 } 6458 Message msg = mHandler.obtainMessage(what, event); 6459 mHandler.sendMessage(msg); 6460 } 6461 6462 public void updatePointerIcon(float x, float y) { 6463 final int what = MSG_UPDATE_POINTER_ICON; 6464 mHandler.removeMessages(what); 6465 final long now = SystemClock.uptimeMillis(); 6466 final MotionEvent event = MotionEvent.obtain( 6467 0, now, MotionEvent.ACTION_HOVER_MOVE, x, y, 0); 6468 Message msg = mHandler.obtainMessage(what, event); 6469 mHandler.sendMessage(msg); 6470 } 6471 6472 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6473 int localValue, int localChanges) { 6474 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6475 args.seq = seq; 6476 args.globalVisibility = globalVisibility; 6477 args.localValue = localValue; 6478 args.localChanges = localChanges; 6479 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6480 } 6481 6482 public void dispatchCheckFocus() { 6483 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6484 // This will result in a call to checkFocus() below. 6485 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6486 } 6487 } 6488 6489 public void dispatchRequestKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 6490 mHandler.obtainMessage( 6491 MSG_REQUEST_KEYBOARD_SHORTCUTS, deviceId, 0, receiver).sendToTarget(); 6492 } 6493 6494 /** 6495 * Post a callback to send a 6496 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6497 * This event is send at most once every 6498 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6499 */ 6500 private void postSendWindowContentChangedCallback(View source, int changeType) { 6501 if (mSendWindowContentChangedAccessibilityEvent == null) { 6502 mSendWindowContentChangedAccessibilityEvent = 6503 new SendWindowContentChangedAccessibilityEvent(); 6504 } 6505 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6506 } 6507 6508 /** 6509 * Remove a posted callback to send a 6510 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6511 */ 6512 private void removeSendWindowContentChangedCallback() { 6513 if (mSendWindowContentChangedAccessibilityEvent != null) { 6514 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6515 } 6516 } 6517 6518 @Override 6519 public boolean showContextMenuForChild(View originalView) { 6520 return false; 6521 } 6522 6523 @Override 6524 public boolean showContextMenuForChild(View originalView, float x, float y) { 6525 return false; 6526 } 6527 6528 @Override 6529 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6530 return null; 6531 } 6532 6533 @Override 6534 public ActionMode startActionModeForChild( 6535 View originalView, ActionMode.Callback callback, int type) { 6536 return null; 6537 } 6538 6539 @Override 6540 public void createContextMenu(ContextMenu menu) { 6541 } 6542 6543 @Override 6544 public void childDrawableStateChanged(View child) { 6545 } 6546 6547 @Override 6548 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6549 if (mView == null || mStopped || mPausedForTransition) { 6550 return false; 6551 } 6552 // Intercept accessibility focus events fired by virtual nodes to keep 6553 // track of accessibility focus position in such nodes. 6554 final int eventType = event.getEventType(); 6555 switch (eventType) { 6556 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6557 final long sourceNodeId = event.getSourceNodeId(); 6558 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6559 sourceNodeId); 6560 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6561 if (source != null) { 6562 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6563 if (provider != null) { 6564 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6565 sourceNodeId); 6566 final AccessibilityNodeInfo node; 6567 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6568 node = provider.createAccessibilityNodeInfo( 6569 AccessibilityNodeProvider.HOST_VIEW_ID); 6570 } else { 6571 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6572 } 6573 setAccessibilityFocus(source, node); 6574 } 6575 } 6576 } break; 6577 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6578 final long sourceNodeId = event.getSourceNodeId(); 6579 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6580 sourceNodeId); 6581 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6582 if (source != null) { 6583 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6584 if (provider != null) { 6585 setAccessibilityFocus(null, null); 6586 } 6587 } 6588 } break; 6589 6590 6591 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6592 handleWindowContentChangedEvent(event); 6593 } break; 6594 } 6595 mAccessibilityManager.sendAccessibilityEvent(event); 6596 return true; 6597 } 6598 6599 /** 6600 * Updates the focused virtual view, when necessary, in response to a 6601 * content changed event. 6602 * <p> 6603 * This is necessary to get updated bounds after a position change. 6604 * 6605 * @param event an accessibility event of type 6606 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} 6607 */ 6608 private void handleWindowContentChangedEvent(AccessibilityEvent event) { 6609 final View focusedHost = mAccessibilityFocusedHost; 6610 if (focusedHost == null || mAccessibilityFocusedVirtualView == null) { 6611 // No virtual view focused, nothing to do here. 6612 return; 6613 } 6614 6615 final AccessibilityNodeProvider provider = focusedHost.getAccessibilityNodeProvider(); 6616 if (provider == null) { 6617 // Error state: virtual view with no provider. Clear focus. 6618 mAccessibilityFocusedHost = null; 6619 mAccessibilityFocusedVirtualView = null; 6620 focusedHost.clearAccessibilityFocusNoCallbacks(); 6621 return; 6622 } 6623 6624 // We only care about change types that may affect the bounds of the 6625 // focused virtual view. 6626 final int changes = event.getContentChangeTypes(); 6627 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) == 0 6628 && changes != AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6629 return; 6630 } 6631 6632 final long eventSourceNodeId = event.getSourceNodeId(); 6633 final int changedViewId = AccessibilityNodeInfo.getAccessibilityViewId(eventSourceNodeId); 6634 6635 // Search up the tree for subtree containment. 6636 boolean hostInSubtree = false; 6637 View root = mAccessibilityFocusedHost; 6638 while (root != null && !hostInSubtree) { 6639 if (changedViewId == root.getAccessibilityViewId()) { 6640 hostInSubtree = true; 6641 } else { 6642 final ViewParent parent = root.getParent(); 6643 if (parent instanceof View) { 6644 root = (View) parent; 6645 } else { 6646 root = null; 6647 } 6648 } 6649 } 6650 6651 // We care only about changes in subtrees containing the host view. 6652 if (!hostInSubtree) { 6653 return; 6654 } 6655 6656 final long focusedSourceNodeId = mAccessibilityFocusedVirtualView.getSourceNodeId(); 6657 int focusedChildId = AccessibilityNodeInfo.getVirtualDescendantId(focusedSourceNodeId); 6658 if (focusedChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6659 // TODO: Should we clear the focused virtual view? 6660 focusedChildId = AccessibilityNodeProvider.HOST_VIEW_ID; 6661 } 6662 6663 // Refresh the node for the focused virtual view. 6664 final Rect oldBounds = mTempRect; 6665 mAccessibilityFocusedVirtualView.getBoundsInScreen(oldBounds); 6666 mAccessibilityFocusedVirtualView = provider.createAccessibilityNodeInfo(focusedChildId); 6667 if (mAccessibilityFocusedVirtualView == null) { 6668 // Error state: The node no longer exists. Clear focus. 6669 mAccessibilityFocusedHost = null; 6670 focusedHost.clearAccessibilityFocusNoCallbacks(); 6671 6672 // This will probably fail, but try to keep the provider's internal 6673 // state consistent by clearing focus. 6674 provider.performAction(focusedChildId, 6675 AccessibilityAction.ACTION_CLEAR_ACCESSIBILITY_FOCUS.getId(), null); 6676 invalidateRectOnScreen(oldBounds); 6677 } else { 6678 // The node was refreshed, invalidate bounds if necessary. 6679 final Rect newBounds = mAccessibilityFocusedVirtualView.getBoundsInScreen(); 6680 if (!oldBounds.equals(newBounds)) { 6681 oldBounds.union(newBounds); 6682 invalidateRectOnScreen(oldBounds); 6683 } 6684 } 6685 } 6686 6687 @Override 6688 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6689 postSendWindowContentChangedCallback(source, changeType); 6690 } 6691 6692 @Override 6693 public boolean canResolveLayoutDirection() { 6694 return true; 6695 } 6696 6697 @Override 6698 public boolean isLayoutDirectionResolved() { 6699 return true; 6700 } 6701 6702 @Override 6703 public int getLayoutDirection() { 6704 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6705 } 6706 6707 @Override 6708 public boolean canResolveTextDirection() { 6709 return true; 6710 } 6711 6712 @Override 6713 public boolean isTextDirectionResolved() { 6714 return true; 6715 } 6716 6717 @Override 6718 public int getTextDirection() { 6719 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6720 } 6721 6722 @Override 6723 public boolean canResolveTextAlignment() { 6724 return true; 6725 } 6726 6727 @Override 6728 public boolean isTextAlignmentResolved() { 6729 return true; 6730 } 6731 6732 @Override 6733 public int getTextAlignment() { 6734 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6735 } 6736 6737 private View getCommonPredecessor(View first, View second) { 6738 if (mTempHashSet == null) { 6739 mTempHashSet = new HashSet<View>(); 6740 } 6741 HashSet<View> seen = mTempHashSet; 6742 seen.clear(); 6743 View firstCurrent = first; 6744 while (firstCurrent != null) { 6745 seen.add(firstCurrent); 6746 ViewParent firstCurrentParent = firstCurrent.mParent; 6747 if (firstCurrentParent instanceof View) { 6748 firstCurrent = (View) firstCurrentParent; 6749 } else { 6750 firstCurrent = null; 6751 } 6752 } 6753 View secondCurrent = second; 6754 while (secondCurrent != null) { 6755 if (seen.contains(secondCurrent)) { 6756 seen.clear(); 6757 return secondCurrent; 6758 } 6759 ViewParent secondCurrentParent = secondCurrent.mParent; 6760 if (secondCurrentParent instanceof View) { 6761 secondCurrent = (View) secondCurrentParent; 6762 } else { 6763 secondCurrent = null; 6764 } 6765 } 6766 seen.clear(); 6767 return null; 6768 } 6769 6770 void checkThread() { 6771 if (mThread != Thread.currentThread()) { 6772 throw new CalledFromWrongThreadException( 6773 "Only the original thread that created a view hierarchy can touch its views."); 6774 } 6775 } 6776 6777 @Override 6778 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6779 // ViewAncestor never intercepts touch event, so this can be a no-op 6780 } 6781 6782 @Override 6783 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6784 if (rectangle == null) { 6785 return scrollToRectOrFocus(null, immediate); 6786 } 6787 rectangle.offset(child.getLeft() - child.getScrollX(), 6788 child.getTop() - child.getScrollY()); 6789 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6790 mTempRect.set(rectangle); 6791 mTempRect.offset(0, -mCurScrollY); 6792 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6793 try { 6794 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6795 } catch (RemoteException re) { 6796 /* ignore */ 6797 } 6798 return scrolled; 6799 } 6800 6801 @Override 6802 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6803 // Do nothing. 6804 } 6805 6806 @Override 6807 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6808 return false; 6809 } 6810 6811 @Override 6812 public void onStopNestedScroll(View target) { 6813 } 6814 6815 @Override 6816 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6817 } 6818 6819 @Override 6820 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6821 int dxUnconsumed, int dyUnconsumed) { 6822 } 6823 6824 @Override 6825 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6826 } 6827 6828 @Override 6829 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6830 return false; 6831 } 6832 6833 @Override 6834 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6835 return false; 6836 } 6837 6838 @Override 6839 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6840 return false; 6841 } 6842 6843 /** 6844 * Force the window to report its next draw. 6845 * <p> 6846 * This method is only supposed to be used to speed up the interaction from SystemUI and window 6847 * manager when waiting for the first frame to be drawn when turning on the screen. DO NOT USE 6848 * unless you fully understand this interaction. 6849 * @hide 6850 */ 6851 public void setReportNextDraw() { 6852 mReportNextDraw = true; 6853 invalidate(); 6854 } 6855 6856 void changeCanvasOpacity(boolean opaque) { 6857 Log.d(mTag, "changeCanvasOpacity: opaque=" + opaque); 6858 if (mAttachInfo.mHardwareRenderer != null) { 6859 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6860 } 6861 } 6862 6863 class TakenSurfaceHolder extends BaseSurfaceHolder { 6864 @Override 6865 public boolean onAllowLockCanvas() { 6866 return mDrawingAllowed; 6867 } 6868 6869 @Override 6870 public void onRelayoutContainer() { 6871 // Not currently interesting -- from changing between fixed and layout size. 6872 } 6873 6874 @Override 6875 public void setFormat(int format) { 6876 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6877 } 6878 6879 @Override 6880 public void setType(int type) { 6881 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6882 } 6883 6884 @Override 6885 public void onUpdateSurface() { 6886 // We take care of format and type changes on our own. 6887 throw new IllegalStateException("Shouldn't be here"); 6888 } 6889 6890 @Override 6891 public boolean isCreating() { 6892 return mIsCreating; 6893 } 6894 6895 @Override 6896 public void setFixedSize(int width, int height) { 6897 throw new UnsupportedOperationException( 6898 "Currently only support sizing from layout"); 6899 } 6900 6901 @Override 6902 public void setKeepScreenOn(boolean screenOn) { 6903 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6904 } 6905 } 6906 6907 static class W extends IWindow.Stub { 6908 private final WeakReference<ViewRootImpl> mViewAncestor; 6909 private final IWindowSession mWindowSession; 6910 6911 W(ViewRootImpl viewAncestor) { 6912 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6913 mWindowSession = viewAncestor.mWindowSession; 6914 } 6915 6916 @Override 6917 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6918 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 6919 Configuration newConfig, Rect backDropFrame, boolean forceLayout, 6920 boolean alwaysConsumeNavBar) { 6921 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6922 if (viewAncestor != null) { 6923 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6924 visibleInsets, stableInsets, outsets, reportDraw, newConfig, backDropFrame, 6925 forceLayout, alwaysConsumeNavBar); 6926 } 6927 } 6928 6929 @Override 6930 public void moved(int newX, int newY) { 6931 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6932 if (viewAncestor != null) { 6933 viewAncestor.dispatchMoved(newX, newY); 6934 } 6935 } 6936 6937 @Override 6938 public void dispatchAppVisibility(boolean visible) { 6939 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6940 if (viewAncestor != null) { 6941 viewAncestor.dispatchAppVisibility(visible); 6942 } 6943 } 6944 6945 @Override 6946 public void dispatchGetNewSurface() { 6947 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6948 if (viewAncestor != null) { 6949 viewAncestor.dispatchGetNewSurface(); 6950 } 6951 } 6952 6953 @Override 6954 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6955 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6956 if (viewAncestor != null) { 6957 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6958 } 6959 } 6960 6961 private static int checkCallingPermission(String permission) { 6962 try { 6963 return ActivityManagerNative.getDefault().checkPermission( 6964 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6965 } catch (RemoteException e) { 6966 return PackageManager.PERMISSION_DENIED; 6967 } 6968 } 6969 6970 @Override 6971 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6972 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6973 if (viewAncestor != null) { 6974 final View view = viewAncestor.mView; 6975 if (view != null) { 6976 if (checkCallingPermission(Manifest.permission.DUMP) != 6977 PackageManager.PERMISSION_GRANTED) { 6978 throw new SecurityException("Insufficient permissions to invoke" 6979 + " executeCommand() from pid=" + Binder.getCallingPid() 6980 + ", uid=" + Binder.getCallingUid()); 6981 } 6982 6983 OutputStream clientStream = null; 6984 try { 6985 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6986 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6987 } catch (IOException e) { 6988 e.printStackTrace(); 6989 } finally { 6990 if (clientStream != null) { 6991 try { 6992 clientStream.close(); 6993 } catch (IOException e) { 6994 e.printStackTrace(); 6995 } 6996 } 6997 } 6998 } 6999 } 7000 } 7001 7002 @Override 7003 public void closeSystemDialogs(String reason) { 7004 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7005 if (viewAncestor != null) { 7006 viewAncestor.dispatchCloseSystemDialogs(reason); 7007 } 7008 } 7009 7010 @Override 7011 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 7012 boolean sync) { 7013 if (sync) { 7014 try { 7015 mWindowSession.wallpaperOffsetsComplete(asBinder()); 7016 } catch (RemoteException e) { 7017 } 7018 } 7019 } 7020 7021 @Override 7022 public void dispatchWallpaperCommand(String action, int x, int y, 7023 int z, Bundle extras, boolean sync) { 7024 if (sync) { 7025 try { 7026 mWindowSession.wallpaperCommandComplete(asBinder(), null); 7027 } catch (RemoteException e) { 7028 } 7029 } 7030 } 7031 7032 /* Drag/drop */ 7033 @Override 7034 public void dispatchDragEvent(DragEvent event) { 7035 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7036 if (viewAncestor != null) { 7037 viewAncestor.dispatchDragEvent(event); 7038 } 7039 } 7040 7041 @Override 7042 public void updatePointerIcon(float x, float y) { 7043 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7044 if (viewAncestor != null) { 7045 viewAncestor.updatePointerIcon(x, y); 7046 } 7047 } 7048 7049 @Override 7050 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 7051 int localValue, int localChanges) { 7052 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7053 if (viewAncestor != null) { 7054 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 7055 localValue, localChanges); 7056 } 7057 } 7058 7059 @Override 7060 public void dispatchWindowShown() { 7061 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7062 if (viewAncestor != null) { 7063 viewAncestor.dispatchWindowShown(); 7064 } 7065 } 7066 7067 @Override 7068 public void requestAppKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 7069 ViewRootImpl viewAncestor = mViewAncestor.get(); 7070 if (viewAncestor != null) { 7071 viewAncestor.dispatchRequestKeyboardShortcuts(receiver, deviceId); 7072 } 7073 } 7074 } 7075 7076 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 7077 public CalledFromWrongThreadException(String msg) { 7078 super(msg); 7079 } 7080 } 7081 7082 static HandlerActionQueue getRunQueue() { 7083 HandlerActionQueue rq = sRunQueues.get(); 7084 if (rq != null) { 7085 return rq; 7086 } 7087 rq = new HandlerActionQueue(); 7088 sRunQueues.set(rq); 7089 return rq; 7090 } 7091 7092 /** 7093 * Start a drag resizing which will inform all listeners that a window resize is taking place. 7094 */ 7095 private void startDragResizing(Rect initialBounds, boolean fullscreen, Rect systemInsets, 7096 Rect stableInsets, int resizeMode) { 7097 if (!mDragResizing) { 7098 mDragResizing = true; 7099 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7100 mWindowCallbacks.get(i).onWindowDragResizeStart(initialBounds, fullscreen, 7101 systemInsets, stableInsets, resizeMode); 7102 } 7103 mFullRedrawNeeded = true; 7104 } 7105 } 7106 7107 /** 7108 * End a drag resize which will inform all listeners that a window resize has ended. 7109 */ 7110 private void endDragResizing() { 7111 if (mDragResizing) { 7112 mDragResizing = false; 7113 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7114 mWindowCallbacks.get(i).onWindowDragResizeEnd(); 7115 } 7116 mFullRedrawNeeded = true; 7117 } 7118 } 7119 7120 private boolean updateContentDrawBounds() { 7121 boolean updated = false; 7122 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7123 updated |= mWindowCallbacks.get(i).onContentDrawn( 7124 mWindowAttributes.surfaceInsets.left, 7125 mWindowAttributes.surfaceInsets.top, 7126 mWidth, mHeight); 7127 } 7128 return updated | (mDragResizing && mReportNextDraw); 7129 } 7130 7131 private void requestDrawWindow() { 7132 if (mReportNextDraw) { 7133 mWindowDrawCountDown = new CountDownLatch(mWindowCallbacks.size()); 7134 } 7135 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7136 mWindowCallbacks.get(i).onRequestDraw(mReportNextDraw); 7137 } 7138 } 7139 7140 /** 7141 * Tells this instance that its corresponding activity has just relaunched. In this case, we 7142 * need to force a relayout of the window to make sure we get the correct bounds from window 7143 * manager. 7144 */ 7145 public void reportActivityRelaunched() { 7146 mActivityRelaunched = true; 7147 } 7148 7149 /** 7150 * Class for managing the accessibility interaction connection 7151 * based on the global accessibility state. 7152 */ 7153 final class AccessibilityInteractionConnectionManager 7154 implements AccessibilityStateChangeListener { 7155 @Override 7156 public void onAccessibilityStateChanged(boolean enabled) { 7157 if (enabled) { 7158 ensureConnection(); 7159 if (mAttachInfo.mHasWindowFocus) { 7160 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 7161 View focusedView = mView.findFocus(); 7162 if (focusedView != null && focusedView != mView) { 7163 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 7164 } 7165 } 7166 } else { 7167 ensureNoConnection(); 7168 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 7169 } 7170 } 7171 7172 public void ensureConnection() { 7173 final boolean registered = 7174 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7175 if (!registered) { 7176 mAttachInfo.mAccessibilityWindowId = 7177 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 7178 new AccessibilityInteractionConnection(ViewRootImpl.this)); 7179 } 7180 } 7181 7182 public void ensureNoConnection() { 7183 final boolean registered = 7184 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7185 if (registered) { 7186 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7187 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 7188 } 7189 } 7190 } 7191 7192 final class HighContrastTextManager implements HighTextContrastChangeListener { 7193 HighContrastTextManager() { 7194 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 7195 } 7196 @Override 7197 public void onHighTextContrastStateChanged(boolean enabled) { 7198 mAttachInfo.mHighContrastText = enabled; 7199 7200 // Destroy Displaylists so they can be recreated with high contrast recordings 7201 destroyHardwareResources(); 7202 7203 // Schedule redraw, which will rerecord + redraw all text 7204 invalidate(); 7205 } 7206 } 7207 7208 /** 7209 * This class is an interface this ViewAncestor provides to the 7210 * AccessibilityManagerService to the latter can interact with 7211 * the view hierarchy in this ViewAncestor. 7212 */ 7213 static final class AccessibilityInteractionConnection 7214 extends IAccessibilityInteractionConnection.Stub { 7215 private final WeakReference<ViewRootImpl> mViewRootImpl; 7216 7217 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 7218 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 7219 } 7220 7221 @Override 7222 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 7223 Region interactiveRegion, int interactionId, 7224 IAccessibilityInteractionConnectionCallback callback, int flags, 7225 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7226 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7227 if (viewRootImpl != null && viewRootImpl.mView != null) { 7228 viewRootImpl.getAccessibilityInteractionController() 7229 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 7230 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7231 interrogatingTid, spec); 7232 } else { 7233 // We cannot make the call and notify the caller so it does not wait. 7234 try { 7235 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7236 } catch (RemoteException re) { 7237 /* best effort - ignore */ 7238 } 7239 } 7240 } 7241 7242 @Override 7243 public void performAccessibilityAction(long accessibilityNodeId, int action, 7244 Bundle arguments, int interactionId, 7245 IAccessibilityInteractionConnectionCallback callback, int flags, 7246 int interrogatingPid, long interrogatingTid) { 7247 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7248 if (viewRootImpl != null && viewRootImpl.mView != null) { 7249 viewRootImpl.getAccessibilityInteractionController() 7250 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 7251 interactionId, callback, flags, interrogatingPid, interrogatingTid); 7252 } else { 7253 // We cannot make the call and notify the caller so it does not wait. 7254 try { 7255 callback.setPerformAccessibilityActionResult(false, interactionId); 7256 } catch (RemoteException re) { 7257 /* best effort - ignore */ 7258 } 7259 } 7260 } 7261 7262 @Override 7263 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 7264 String viewId, Region interactiveRegion, int interactionId, 7265 IAccessibilityInteractionConnectionCallback callback, int flags, 7266 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7267 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7268 if (viewRootImpl != null && viewRootImpl.mView != null) { 7269 viewRootImpl.getAccessibilityInteractionController() 7270 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 7271 viewId, interactiveRegion, interactionId, callback, flags, 7272 interrogatingPid, interrogatingTid, spec); 7273 } else { 7274 // We cannot make the call and notify the caller so it does not wait. 7275 try { 7276 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7277 } catch (RemoteException re) { 7278 /* best effort - ignore */ 7279 } 7280 } 7281 } 7282 7283 @Override 7284 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 7285 Region interactiveRegion, int interactionId, 7286 IAccessibilityInteractionConnectionCallback callback, int flags, 7287 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7288 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7289 if (viewRootImpl != null && viewRootImpl.mView != null) { 7290 viewRootImpl.getAccessibilityInteractionController() 7291 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 7292 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7293 interrogatingTid, spec); 7294 } else { 7295 // We cannot make the call and notify the caller so it does not wait. 7296 try { 7297 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7298 } catch (RemoteException re) { 7299 /* best effort - ignore */ 7300 } 7301 } 7302 } 7303 7304 @Override 7305 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 7306 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7307 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7308 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7309 if (viewRootImpl != null && viewRootImpl.mView != null) { 7310 viewRootImpl.getAccessibilityInteractionController() 7311 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 7312 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7313 spec); 7314 } else { 7315 // We cannot make the call and notify the caller so it does not wait. 7316 try { 7317 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7318 } catch (RemoteException re) { 7319 /* best effort - ignore */ 7320 } 7321 } 7322 } 7323 7324 @Override 7325 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 7326 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7327 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7328 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7329 if (viewRootImpl != null && viewRootImpl.mView != null) { 7330 viewRootImpl.getAccessibilityInteractionController() 7331 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 7332 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7333 spec); 7334 } else { 7335 // We cannot make the call and notify the caller so it does not wait. 7336 try { 7337 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7338 } catch (RemoteException re) { 7339 /* best effort - ignore */ 7340 } 7341 } 7342 } 7343 } 7344 7345 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 7346 private int mChangeTypes = 0; 7347 7348 public View mSource; 7349 public long mLastEventTimeMillis; 7350 7351 @Override 7352 public void run() { 7353 // The accessibility may be turned off while we were waiting so check again. 7354 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 7355 mLastEventTimeMillis = SystemClock.uptimeMillis(); 7356 AccessibilityEvent event = AccessibilityEvent.obtain(); 7357 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 7358 event.setContentChangeTypes(mChangeTypes); 7359 mSource.sendAccessibilityEventUnchecked(event); 7360 } else { 7361 mLastEventTimeMillis = 0; 7362 } 7363 // In any case reset to initial state. 7364 mSource.resetSubtreeAccessibilityStateChanged(); 7365 mSource = null; 7366 mChangeTypes = 0; 7367 } 7368 7369 public void runOrPost(View source, int changeType) { 7370 if (mSource != null) { 7371 // If there is no common predecessor, then mSource points to 7372 // a removed view, hence in this case always prefer the source. 7373 View predecessor = getCommonPredecessor(mSource, source); 7374 mSource = (predecessor != null) ? predecessor : source; 7375 mChangeTypes |= changeType; 7376 return; 7377 } 7378 mSource = source; 7379 mChangeTypes = changeType; 7380 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 7381 final long minEventIntevalMillis = 7382 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 7383 if (timeSinceLastMillis >= minEventIntevalMillis) { 7384 mSource.removeCallbacks(this); 7385 run(); 7386 } else { 7387 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 7388 } 7389 } 7390 } 7391} 7392