ViewRootImpl.java revision 92b26c5bffd92a8e2251f60a6663e9eba4d5aa2d
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY; 20import static android.view.WindowManager.LayoutParams.TYPE_DOCK_DIVIDER; 21import static android.view.WindowManager.LayoutParams.TYPE_INPUT_METHOD; 22import static android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL; 23import static android.view.WindowManager.LayoutParams.TYPE_VOLUME_OVERLAY; 24 25import android.Manifest; 26import android.animation.LayoutTransition; 27import android.app.ActivityManagerNative; 28import android.content.ClipDescription; 29import android.content.ComponentCallbacks; 30import android.content.Context; 31import android.content.pm.PackageManager; 32import android.content.res.CompatibilityInfo; 33import android.content.res.Configuration; 34import android.content.res.Resources; 35import android.graphics.Canvas; 36import android.graphics.Matrix; 37import android.graphics.PixelFormat; 38import android.graphics.Point; 39import android.graphics.PointF; 40import android.graphics.PorterDuff; 41import android.graphics.Rect; 42import android.graphics.Region; 43import android.graphics.drawable.Drawable; 44import android.hardware.display.DisplayManager; 45import android.hardware.display.DisplayManager.DisplayListener; 46import android.hardware.input.InputManager; 47import android.media.AudioManager; 48import android.os.Binder; 49import android.os.Build; 50import android.os.Bundle; 51import android.os.Debug; 52import android.os.Handler; 53import android.os.Looper; 54import android.os.Message; 55import android.os.ParcelFileDescriptor; 56import android.os.Process; 57import android.os.RemoteException; 58import android.os.SystemClock; 59import android.os.SystemProperties; 60import android.os.Trace; 61import android.util.AndroidRuntimeException; 62import android.util.DisplayMetrics; 63import android.util.Log; 64import android.util.Slog; 65import android.util.TimeUtils; 66import android.util.TypedValue; 67import android.view.Surface.OutOfResourcesException; 68import android.view.View.AttachInfo; 69import android.view.View.MeasureSpec; 70import android.view.accessibility.AccessibilityEvent; 71import android.view.accessibility.AccessibilityManager; 72import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 73import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 74import android.view.accessibility.AccessibilityNodeInfo; 75import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction; 76import android.view.accessibility.AccessibilityNodeProvider; 77import android.view.accessibility.IAccessibilityInteractionConnection; 78import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 79import android.view.animation.AccelerateDecelerateInterpolator; 80import android.view.animation.Interpolator; 81import android.view.inputmethod.InputConnection; 82import android.view.inputmethod.InputMethodManager; 83import android.widget.Scroller; 84 85import com.android.internal.R; 86import com.android.internal.os.IResultReceiver; 87import com.android.internal.os.SomeArgs; 88import com.android.internal.policy.PhoneFallbackEventHandler; 89import com.android.internal.view.BaseSurfaceHolder; 90import com.android.internal.view.RootViewSurfaceTaker; 91 92import java.io.FileDescriptor; 93import java.io.IOException; 94import java.io.OutputStream; 95import java.io.PrintWriter; 96import java.lang.ref.WeakReference; 97import java.util.ArrayList; 98import java.util.concurrent.CountDownLatch; 99import java.util.HashSet; 100 101/** 102 * The top of a view hierarchy, implementing the needed protocol between View 103 * and the WindowManager. This is for the most part an internal implementation 104 * detail of {@link WindowManagerGlobal}. 105 * 106 * {@hide} 107 */ 108@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 109public final class ViewRootImpl implements ViewParent, 110 View.AttachInfo.Callbacks, ThreadedRenderer.HardwareDrawCallbacks { 111 private static final String TAG = "ViewRootImpl"; 112 private static final boolean DBG = false; 113 private static final boolean LOCAL_LOGV = false; 114 /** @noinspection PointlessBooleanExpression*/ 115 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 116 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 117 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 118 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 119 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 120 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 121 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 122 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 123 private static final boolean DEBUG_FPS = false; 124 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 125 126 /** 127 * Set to false if we do not want to use the multi threaded renderer. Note that by disabling 128 * this, WindowCallbacks will not fire. 129 */ 130 private static final boolean USE_MT_RENDERER = true; 131 132 /** 133 * Set this system property to true to force the view hierarchy to render 134 * at 60 Hz. This can be used to measure the potential framerate. 135 */ 136 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 137 138 // properties used by emulator to determine display shape 139 public static final String PROPERTY_EMULATOR_WIN_OUTSET_BOTTOM_PX = 140 "ro.emu.win_outset_bottom_px"; 141 142 /** 143 * Maximum time we allow the user to roll the trackball enough to generate 144 * a key event, before resetting the counters. 145 */ 146 static final int MAX_TRACKBALL_DELAY = 250; 147 148 private static final int RESIZE_MODE_FREEFORM = 0; 149 private static final int RESIZE_MODE_DOCKED_DIVIDER = 1; 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 final ArrayList<WindowCallbacks> mWindowCallbacks = new ArrayList(); 159 final Context mContext; 160 final IWindowSession mWindowSession; 161 final Display mDisplay; 162 final DisplayManager mDisplayManager; 163 final String mBasePackageName; 164 165 final int[] mTmpLocation = new int[2]; 166 167 final TypedValue mTmpValue = new TypedValue(); 168 169 final Thread mThread; 170 171 final WindowLeaked mLocation; 172 173 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 174 175 final W mWindow; 176 177 final int mTargetSdkVersion; 178 179 int mSeq; 180 181 View mView; 182 183 View mAccessibilityFocusedHost; 184 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 185 186 // The view which captures mouse input, or null when no one is capturing. 187 View mCapturingView; 188 189 int mViewVisibility; 190 boolean mAppVisible = true; 191 // For recents to freeform transition we need to keep drawing after the app receives information 192 // that it became invisible. This will ignore that information and depend on the decor view 193 // visibility to control drawing. The decor view visibility will get adjusted when the app get 194 // stopped and that's when the app will stop drawing further frames. 195 private boolean mForceDecorViewVisibility = false; 196 int mOrigWindowType = -1; 197 198 /** Whether the window had focus during the most recent traversal. */ 199 boolean mHadWindowFocus; 200 201 /** 202 * Whether the window lost focus during a previous traversal and has not 203 * yet gained it back. Used to determine whether a WINDOW_STATE_CHANGE 204 * accessibility events should be sent during traversal. 205 */ 206 boolean mLostWindowFocus; 207 208 // Set to true if the owner of this window is in the stopped state, 209 // so the window should no longer be active. 210 boolean mStopped = false; 211 212 // Set to true if the owner of this window is in ambient mode, 213 // which means it won't receive input events. 214 boolean mIsAmbientMode = false; 215 216 // Set to true to stop input during an Activity Transition. 217 boolean mPausedForTransition = false; 218 219 boolean mLastInCompatMode = false; 220 221 SurfaceHolder.Callback2 mSurfaceHolderCallback; 222 BaseSurfaceHolder mSurfaceHolder; 223 boolean mIsCreating; 224 boolean mDrawingAllowed; 225 226 final Region mTransparentRegion; 227 final Region mPreviousTransparentRegion; 228 229 int mWidth; 230 int mHeight; 231 Rect mDirty; 232 boolean mIsAnimating; 233 234 private boolean mDragResizing; 235 private int mResizeMode; 236 private int mCanvasOffsetX; 237 private int mCanvasOffsetY; 238 private boolean mActivityRelaunched; 239 240 CompatibilityInfo.Translator mTranslator; 241 242 final View.AttachInfo mAttachInfo; 243 InputChannel mInputChannel; 244 InputQueue.Callback mInputQueueCallback; 245 InputQueue mInputQueue; 246 FallbackEventHandler mFallbackEventHandler; 247 Choreographer mChoreographer; 248 249 final Rect mTempRect; // used in the transaction to not thrash the heap. 250 final Rect mVisRect; // used to retrieve visible rect of focused view. 251 252 boolean mTraversalScheduled; 253 int mTraversalBarrier; 254 boolean mWillDrawSoon; 255 /** Set to true while in performTraversals for detecting when die(true) is called from internal 256 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 257 boolean mIsInTraversal; 258 boolean mApplyInsetsRequested; 259 boolean mLayoutRequested; 260 boolean mFirst; 261 boolean mReportNextDraw; 262 boolean mFullRedrawNeeded; 263 boolean mNewSurfaceNeeded; 264 boolean mHasHadWindowFocus; 265 boolean mLastWasImTarget; 266 CountDownLatch mWindowDrawCountDown; 267 268 boolean mIsDrawing; 269 int mLastSystemUiVisibility; 270 int mClientWindowLayoutFlags; 271 boolean mLastOverscanRequested; 272 273 // Pool of queued input events. 274 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 275 private QueuedInputEvent mQueuedInputEventPool; 276 private int mQueuedInputEventPoolSize; 277 278 /* Input event queue. 279 * Pending input events are input events waiting to be delivered to the input stages 280 * and handled by the application. 281 */ 282 QueuedInputEvent mPendingInputEventHead; 283 QueuedInputEvent mPendingInputEventTail; 284 int mPendingInputEventCount; 285 boolean mProcessInputEventsScheduled; 286 boolean mUnbufferedInputDispatch; 287 String mPendingInputEventQueueLengthCounterName = "pq"; 288 289 InputStage mFirstInputStage; 290 InputStage mFirstPostImeInputStage; 291 InputStage mSyntheticInputStage; 292 293 boolean mWindowAttributesChanged = false; 294 int mWindowAttributesChangesFlag = 0; 295 296 // These can be accessed by any thread, must be protected with a lock. 297 // Surface can never be reassigned or cleared (use Surface.clear()). 298 final Surface mSurface = new Surface(); 299 300 boolean mAdded; 301 boolean mAddedTouchMode; 302 303 final DisplayAdjustments mDisplayAdjustments; 304 305 // These are accessed by multiple threads. 306 final Rect mWinFrame; // frame given by window manager. 307 308 final Rect mPendingOverscanInsets = new Rect(); 309 final Rect mPendingVisibleInsets = new Rect(); 310 final Rect mPendingStableInsets = new Rect(); 311 final Rect mPendingContentInsets = new Rect(); 312 final Rect mPendingOutsets = new Rect(); 313 final Rect mPendingBackDropFrame = new Rect(); 314 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 315 = new ViewTreeObserver.InternalInsetsInfo(); 316 317 final Rect mDispatchContentInsets = new Rect(); 318 final Rect mDispatchStableInsets = new Rect(); 319 320 private WindowInsets mLastWindowInsets; 321 322 final Configuration mLastConfiguration = new Configuration(); 323 final Configuration mPendingConfiguration = new Configuration(); 324 325 boolean mScrollMayChange; 326 int mSoftInputMode; 327 WeakReference<View> mLastScrolledFocus; 328 int mScrollY; 329 int mCurScrollY; 330 Scroller mScroller; 331 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 332 private ArrayList<LayoutTransition> mPendingTransitions; 333 334 final ViewConfiguration mViewConfiguration; 335 336 /* Drag/drop */ 337 ClipDescription mDragDescription; 338 View mCurrentDragView; 339 volatile Object mLocalDragState; 340 final PointF mDragPoint = new PointF(); 341 final PointF mLastTouchPoint = new PointF(); 342 int mLastTouchSource; 343 344 private boolean mProfileRendering; 345 private Choreographer.FrameCallback mRenderProfiler; 346 private boolean mRenderProfilingEnabled; 347 348 // Variables to track frames per second, enabled via DEBUG_FPS flag 349 private long mFpsStartTime = -1; 350 private long mFpsPrevTime = -1; 351 private int mFpsNumFrames; 352 353 private int mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 354 private PointerIcon mCustomPointerIcon = null; 355 356 /** 357 * see {@link #playSoundEffect(int)} 358 */ 359 AudioManager mAudioManager; 360 361 final AccessibilityManager mAccessibilityManager; 362 363 AccessibilityInteractionController mAccessibilityInteractionController; 364 365 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 366 HighContrastTextManager mHighContrastTextManager; 367 368 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 369 370 HashSet<View> mTempHashSet; 371 372 private final int mDensity; 373 private final int mNoncompatDensity; 374 375 private boolean mInLayout = false; 376 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 377 boolean mHandlingLayoutInLayoutRequest = false; 378 379 private int mViewLayoutDirectionInitial; 380 381 /** Set to true once doDie() has been called. */ 382 private boolean mRemoved; 383 384 /** 385 * Consistency verifier for debugging purposes. 386 */ 387 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 388 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 389 new InputEventConsistencyVerifier(this, 0) : null; 390 391 static final class SystemUiVisibilityInfo { 392 int seq; 393 int globalVisibility; 394 int localValue; 395 int localChanges; 396 } 397 398 private String mTag = TAG; 399 400 public ViewRootImpl(Context context, Display display) { 401 mContext = context; 402 mWindowSession = WindowManagerGlobal.getWindowSession(); 403 mDisplay = display; 404 mBasePackageName = context.getBasePackageName(); 405 406 mDisplayAdjustments = display.getDisplayAdjustments(); 407 408 mThread = Thread.currentThread(); 409 mLocation = new WindowLeaked(null); 410 mLocation.fillInStackTrace(); 411 mWidth = -1; 412 mHeight = -1; 413 mDirty = new Rect(); 414 mTempRect = new Rect(); 415 mVisRect = new Rect(); 416 mWinFrame = new Rect(); 417 mWindow = new W(this); 418 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 419 mViewVisibility = View.GONE; 420 mTransparentRegion = new Region(); 421 mPreviousTransparentRegion = new Region(); 422 mFirst = true; // true for the first time the view is added 423 mAdded = false; 424 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 425 mAccessibilityManager = AccessibilityManager.getInstance(context); 426 mAccessibilityInteractionConnectionManager = 427 new AccessibilityInteractionConnectionManager(); 428 mAccessibilityManager.addAccessibilityStateChangeListener( 429 mAccessibilityInteractionConnectionManager); 430 mHighContrastTextManager = new HighContrastTextManager(); 431 mAccessibilityManager.addHighTextContrastStateChangeListener( 432 mHighContrastTextManager); 433 mViewConfiguration = ViewConfiguration.get(context); 434 mDensity = context.getResources().getDisplayMetrics().densityDpi; 435 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 436 mFallbackEventHandler = new PhoneFallbackEventHandler(context); 437 mChoreographer = Choreographer.getInstance(); 438 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 439 loadSystemProperties(); 440 } 441 442 public static void addFirstDrawHandler(Runnable callback) { 443 synchronized (sFirstDrawHandlers) { 444 if (!sFirstDrawComplete) { 445 sFirstDrawHandlers.add(callback); 446 } 447 } 448 } 449 450 public static void addConfigCallback(ComponentCallbacks callback) { 451 synchronized (sConfigCallbacks) { 452 sConfigCallbacks.add(callback); 453 } 454 } 455 456 public void addWindowCallbacks(WindowCallbacks callback) { 457 if (USE_MT_RENDERER) { 458 synchronized (mWindowCallbacks) { 459 mWindowCallbacks.add(callback); 460 } 461 } 462 } 463 464 public void removeWindowCallbacks(WindowCallbacks callback) { 465 if (USE_MT_RENDERER) { 466 synchronized (mWindowCallbacks) { 467 mWindowCallbacks.remove(callback); 468 } 469 } 470 } 471 472 public void reportDrawFinish() { 473 if (mWindowDrawCountDown != null) { 474 mWindowDrawCountDown.countDown(); 475 } 476 } 477 478 // FIXME for perf testing only 479 private boolean mProfile = false; 480 481 /** 482 * Call this to profile the next traversal call. 483 * FIXME for perf testing only. Remove eventually 484 */ 485 public void profile() { 486 mProfile = true; 487 } 488 489 /** 490 * Indicates whether we are in touch mode. Calling this method triggers an IPC 491 * call and should be avoided whenever possible. 492 * 493 * @return True, if the device is in touch mode, false otherwise. 494 * 495 * @hide 496 */ 497 static boolean isInTouchMode() { 498 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 499 if (windowSession != null) { 500 try { 501 return windowSession.getInTouchMode(); 502 } catch (RemoteException e) { 503 } 504 } 505 return false; 506 } 507 508 /** 509 * We have one child 510 */ 511 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 512 synchronized (this) { 513 if (mView == null) { 514 mView = view; 515 516 mAttachInfo.mDisplayState = mDisplay.getState(); 517 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 518 519 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 520 mFallbackEventHandler.setView(view); 521 mWindowAttributes.copyFrom(attrs); 522 if (mWindowAttributes.packageName == null) { 523 mWindowAttributes.packageName = mBasePackageName; 524 } 525 attrs = mWindowAttributes; 526 setTag(); 527 // Keep track of the actual window flags supplied by the client. 528 mClientWindowLayoutFlags = attrs.flags; 529 530 setAccessibilityFocus(null, null); 531 532 if (view instanceof RootViewSurfaceTaker) { 533 mSurfaceHolderCallback = 534 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 535 if (mSurfaceHolderCallback != null) { 536 mSurfaceHolder = new TakenSurfaceHolder(); 537 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 538 } 539 } 540 541 // Compute surface insets required to draw at specified Z value. 542 // TODO: Use real shadow insets for a constant max Z. 543 if (!attrs.hasManualSurfaceInsets) { 544 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 545 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 546 } 547 548 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 549 mTranslator = compatibilityInfo.getTranslator(); 550 551 // If the application owns the surface, don't enable hardware acceleration 552 if (mSurfaceHolder == null) { 553 enableHardwareAcceleration(attrs); 554 } 555 556 boolean restore = false; 557 if (mTranslator != null) { 558 mSurface.setCompatibilityTranslator(mTranslator); 559 restore = true; 560 attrs.backup(); 561 mTranslator.translateWindowLayout(attrs); 562 } 563 if (DEBUG_LAYOUT) Log.d(mTag, "WindowLayout in setView:" + attrs); 564 565 if (!compatibilityInfo.supportsScreen()) { 566 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 567 mLastInCompatMode = true; 568 } 569 570 mSoftInputMode = attrs.softInputMode; 571 mWindowAttributesChanged = true; 572 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 573 mAttachInfo.mRootView = view; 574 mAttachInfo.mScalingRequired = mTranslator != null; 575 mAttachInfo.mApplicationScale = 576 mTranslator == null ? 1.0f : mTranslator.applicationScale; 577 if (panelParentView != null) { 578 mAttachInfo.mPanelParentWindowToken 579 = panelParentView.getApplicationWindowToken(); 580 } 581 mAdded = true; 582 int res; /* = WindowManagerImpl.ADD_OKAY; */ 583 584 // Schedule the first layout -before- adding to the window 585 // manager, to make sure we do the relayout before receiving 586 // any other events from the system. 587 requestLayout(); 588 if ((mWindowAttributes.inputFeatures 589 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 590 mInputChannel = new InputChannel(); 591 } 592 mForceDecorViewVisibility = (mWindowAttributes.privateFlags 593 & PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY) != 0; 594 try { 595 mOrigWindowType = mWindowAttributes.type; 596 mAttachInfo.mRecomputeGlobalAttributes = true; 597 collectViewAttributes(); 598 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 599 getHostVisibility(), mDisplay.getDisplayId(), 600 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, 601 mAttachInfo.mOutsets, mInputChannel); 602 } catch (RemoteException e) { 603 mAdded = false; 604 mView = null; 605 mAttachInfo.mRootView = null; 606 mInputChannel = null; 607 mFallbackEventHandler.setView(null); 608 unscheduleTraversals(); 609 setAccessibilityFocus(null, null); 610 throw new RuntimeException("Adding window failed", e); 611 } finally { 612 if (restore) { 613 attrs.restore(); 614 } 615 } 616 617 if (mTranslator != null) { 618 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 619 } 620 mPendingOverscanInsets.set(0, 0, 0, 0); 621 mPendingContentInsets.set(mAttachInfo.mContentInsets); 622 mPendingStableInsets.set(mAttachInfo.mStableInsets); 623 mPendingVisibleInsets.set(0, 0, 0, 0); 624 if (DEBUG_LAYOUT) Log.v(mTag, "Added window " + mWindow); 625 if (res < WindowManagerGlobal.ADD_OKAY) { 626 mAttachInfo.mRootView = null; 627 mAdded = false; 628 mFallbackEventHandler.setView(null); 629 unscheduleTraversals(); 630 setAccessibilityFocus(null, null); 631 switch (res) { 632 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 633 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 634 throw new WindowManager.BadTokenException( 635 "Unable to add window -- token " + attrs.token 636 + " is not valid; is your activity running?"); 637 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 638 throw new WindowManager.BadTokenException( 639 "Unable to add window -- token " + attrs.token 640 + " is not for an application"); 641 case WindowManagerGlobal.ADD_APP_EXITING: 642 throw new WindowManager.BadTokenException( 643 "Unable to add window -- app for token " + attrs.token 644 + " is exiting"); 645 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 646 throw new WindowManager.BadTokenException( 647 "Unable to add window -- window " + mWindow 648 + " has already been added"); 649 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 650 // Silently ignore -- we would have just removed it 651 // right away, anyway. 652 return; 653 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 654 throw new WindowManager.BadTokenException("Unable to add window " 655 + mWindow + " -- another window of type " 656 + mWindowAttributes.type + " already exists"); 657 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 658 throw new WindowManager.BadTokenException("Unable to add window " 659 + mWindow + " -- permission denied for window type " 660 + mWindowAttributes.type); 661 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 662 throw new WindowManager.InvalidDisplayException("Unable to add window " 663 + mWindow + " -- the specified display can not be found"); 664 case WindowManagerGlobal.ADD_INVALID_TYPE: 665 throw new WindowManager.InvalidDisplayException("Unable to add window " 666 + mWindow + " -- the specified window type " 667 + mWindowAttributes.type + " is not valid"); 668 } 669 throw new RuntimeException( 670 "Unable to add window -- unknown error code " + res); 671 } 672 673 if (view instanceof RootViewSurfaceTaker) { 674 mInputQueueCallback = 675 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 676 } 677 if (mInputChannel != null) { 678 if (mInputQueueCallback != null) { 679 mInputQueue = new InputQueue(); 680 mInputQueueCallback.onInputQueueCreated(mInputQueue); 681 } 682 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 683 Looper.myLooper()); 684 } 685 686 view.assignParent(this); 687 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 688 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 689 690 if (mAccessibilityManager.isEnabled()) { 691 mAccessibilityInteractionConnectionManager.ensureConnection(); 692 } 693 694 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 695 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 696 } 697 698 // Set up the input pipeline. 699 CharSequence counterSuffix = attrs.getTitle(); 700 mSyntheticInputStage = new SyntheticInputStage(); 701 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 702 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 703 "aq:native-post-ime:" + counterSuffix); 704 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 705 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 706 "aq:ime:" + counterSuffix); 707 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 708 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 709 "aq:native-pre-ime:" + counterSuffix); 710 711 mFirstInputStage = nativePreImeStage; 712 mFirstPostImeInputStage = earlyPostImeStage; 713 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 714 } 715 } 716 } 717 718 private void setTag() { 719 final String[] split = mWindowAttributes.getTitle().toString().split("\\."); 720 if (split.length > 0) { 721 mTag = TAG + "[" + split[split.length - 1] + "]"; 722 } 723 } 724 725 /** Whether the window is in local focus mode or not */ 726 private boolean isInLocalFocusMode() { 727 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 728 } 729 730 public int getWindowFlags() { 731 return mWindowAttributes.flags; 732 } 733 734 public int getDisplayId() { 735 return mDisplay.getDisplayId(); 736 } 737 738 public CharSequence getTitle() { 739 return mWindowAttributes.getTitle(); 740 } 741 742 void destroyHardwareResources() { 743 if (mAttachInfo.mHardwareRenderer != null) { 744 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 745 mAttachInfo.mHardwareRenderer.destroy(); 746 } 747 } 748 749 public void detachFunctor(long functor) { 750 if (mAttachInfo.mHardwareRenderer != null) { 751 // Fence so that any pending invokeFunctor() messages will be processed 752 // before we return from detachFunctor. 753 mAttachInfo.mHardwareRenderer.stopDrawing(); 754 } 755 } 756 757 /** 758 * Schedules the functor for execution in either kModeProcess or 759 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 760 * 761 * @param functor The native functor to invoke 762 * @param waitForCompletion If true, this will not return until the functor 763 * has invoked. If false, the functor may be invoked 764 * asynchronously. 765 */ 766 public void invokeFunctor(long functor, boolean waitForCompletion) { 767 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 768 } 769 770 public void registerAnimatingRenderNode(RenderNode animator) { 771 if (mAttachInfo.mHardwareRenderer != null) { 772 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 773 } else { 774 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 775 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 776 } 777 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 778 } 779 } 780 781 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 782 mAttachInfo.mHardwareAccelerated = false; 783 mAttachInfo.mHardwareAccelerationRequested = false; 784 785 // Don't enable hardware acceleration when the application is in compatibility mode 786 if (mTranslator != null) return; 787 788 // Try to enable hardware acceleration if requested 789 final boolean hardwareAccelerated = 790 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 791 792 if (hardwareAccelerated) { 793 if (!ThreadedRenderer.isAvailable()) { 794 return; 795 } 796 797 // Persistent processes (including the system) should not do 798 // accelerated rendering on low-end devices. In that case, 799 // sRendererDisabled will be set. In addition, the system process 800 // itself should never do accelerated rendering. In that case, both 801 // sRendererDisabled and sSystemRendererDisabled are set. When 802 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 803 // can be used by code on the system process to escape that and enable 804 // HW accelerated drawing. (This is basically for the lock screen.) 805 806 final boolean fakeHwAccelerated = (attrs.privateFlags & 807 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 808 final boolean forceHwAccelerated = (attrs.privateFlags & 809 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 810 811 if (fakeHwAccelerated) { 812 // This is exclusively for the preview windows the window manager 813 // shows for launching applications, so they will look more like 814 // the app being launched. 815 mAttachInfo.mHardwareAccelerationRequested = true; 816 } else if (!ThreadedRenderer.sRendererDisabled 817 || (ThreadedRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 818 if (mAttachInfo.mHardwareRenderer != null) { 819 mAttachInfo.mHardwareRenderer.destroy(); 820 } 821 822 final Rect insets = attrs.surfaceInsets; 823 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 824 || insets.top != 0 || insets.bottom != 0; 825 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 826 mAttachInfo.mHardwareRenderer = ThreadedRenderer.create(mContext, translucent); 827 if (mAttachInfo.mHardwareRenderer != null) { 828 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 829 mAttachInfo.mHardwareAccelerated = 830 mAttachInfo.mHardwareAccelerationRequested = true; 831 } 832 } 833 } 834 } 835 836 public View getView() { 837 return mView; 838 } 839 840 final WindowLeaked getLocation() { 841 return mLocation; 842 } 843 844 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 845 synchronized (this) { 846 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 847 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 848 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 849 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 850 final int oldSoftInputMode = mWindowAttributes.softInputMode; 851 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 852 853 // Keep track of the actual window flags supplied by the client. 854 mClientWindowLayoutFlags = attrs.flags; 855 856 // Preserve compatible window flag if exists. 857 final int compatibleWindowFlag = mWindowAttributes.privateFlags 858 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 859 860 // Transfer over system UI visibility values as they carry current state. 861 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 862 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 863 864 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 865 if ((mWindowAttributesChangesFlag 866 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 867 // Recompute system ui visibility. 868 mAttachInfo.mRecomputeGlobalAttributes = true; 869 } 870 if (mWindowAttributes.packageName == null) { 871 mWindowAttributes.packageName = mBasePackageName; 872 } 873 mWindowAttributes.privateFlags |= compatibleWindowFlag; 874 875 // Restore old surface insets. 876 mWindowAttributes.surfaceInsets.set( 877 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 878 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 879 880 applyKeepScreenOnFlag(mWindowAttributes); 881 882 if (newView) { 883 mSoftInputMode = attrs.softInputMode; 884 requestLayout(); 885 } 886 887 // Don't lose the mode we last auto-computed. 888 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 889 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 890 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 891 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 892 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 893 } 894 895 mWindowAttributesChanged = true; 896 scheduleTraversals(); 897 } 898 } 899 900 void handleAppVisibility(boolean visible) { 901 if (mAppVisible != visible) { 902 mAppVisible = visible; 903 scheduleTraversals(); 904 if (!mAppVisible) { 905 WindowManagerGlobal.trimForeground(); 906 } 907 } 908 } 909 910 void handleGetNewSurface() { 911 mNewSurfaceNeeded = true; 912 mFullRedrawNeeded = true; 913 scheduleTraversals(); 914 } 915 916 private final DisplayListener mDisplayListener = new DisplayListener() { 917 @Override 918 public void onDisplayChanged(int displayId) { 919 if (mView != null && mDisplay.getDisplayId() == displayId) { 920 final int oldDisplayState = mAttachInfo.mDisplayState; 921 final int newDisplayState = mDisplay.getState(); 922 if (oldDisplayState != newDisplayState) { 923 mAttachInfo.mDisplayState = newDisplayState; 924 pokeDrawLockIfNeeded(); 925 if (oldDisplayState != Display.STATE_UNKNOWN) { 926 final int oldScreenState = toViewScreenState(oldDisplayState); 927 final int newScreenState = toViewScreenState(newDisplayState); 928 if (oldScreenState != newScreenState) { 929 mView.dispatchScreenStateChanged(newScreenState); 930 } 931 if (oldDisplayState == Display.STATE_OFF) { 932 // Draw was suppressed so we need to for it to happen here. 933 mFullRedrawNeeded = true; 934 scheduleTraversals(); 935 } 936 } 937 } 938 } 939 } 940 941 @Override 942 public void onDisplayRemoved(int displayId) { 943 } 944 945 @Override 946 public void onDisplayAdded(int displayId) { 947 } 948 949 private int toViewScreenState(int displayState) { 950 return displayState == Display.STATE_OFF ? 951 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 952 } 953 }; 954 955 void pokeDrawLockIfNeeded() { 956 final int displayState = mAttachInfo.mDisplayState; 957 if (mView != null && mAdded && mTraversalScheduled 958 && (displayState == Display.STATE_DOZE 959 || displayState == Display.STATE_DOZE_SUSPEND)) { 960 try { 961 mWindowSession.pokeDrawLock(mWindow); 962 } catch (RemoteException ex) { 963 // System server died, oh well. 964 } 965 } 966 } 967 968 @Override 969 public void requestFitSystemWindows() { 970 checkThread(); 971 mApplyInsetsRequested = true; 972 scheduleTraversals(); 973 } 974 975 @Override 976 public void requestLayout() { 977 if (!mHandlingLayoutInLayoutRequest) { 978 checkThread(); 979 mLayoutRequested = true; 980 scheduleTraversals(); 981 } 982 } 983 984 @Override 985 public boolean isLayoutRequested() { 986 return mLayoutRequested; 987 } 988 989 void invalidate() { 990 mDirty.set(0, 0, mWidth, mHeight); 991 if (!mWillDrawSoon) { 992 scheduleTraversals(); 993 } 994 } 995 996 void invalidateWorld(View view) { 997 view.invalidate(); 998 if (view instanceof ViewGroup) { 999 ViewGroup parent = (ViewGroup) view; 1000 for (int i = 0; i < parent.getChildCount(); i++) { 1001 invalidateWorld(parent.getChildAt(i)); 1002 } 1003 } 1004 } 1005 1006 @Override 1007 public void invalidateChild(View child, Rect dirty) { 1008 invalidateChildInParent(null, dirty); 1009 } 1010 1011 @Override 1012 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 1013 checkThread(); 1014 if (DEBUG_DRAW) Log.v(mTag, "Invalidate child: " + dirty); 1015 1016 if (dirty == null) { 1017 invalidate(); 1018 return null; 1019 } else if (dirty.isEmpty() && !mIsAnimating) { 1020 return null; 1021 } 1022 1023 if (mCurScrollY != 0 || mTranslator != null) { 1024 mTempRect.set(dirty); 1025 dirty = mTempRect; 1026 if (mCurScrollY != 0) { 1027 dirty.offset(0, -mCurScrollY); 1028 } 1029 if (mTranslator != null) { 1030 mTranslator.translateRectInAppWindowToScreen(dirty); 1031 } 1032 if (mAttachInfo.mScalingRequired) { 1033 dirty.inset(-1, -1); 1034 } 1035 } 1036 1037 invalidateRectOnScreen(dirty); 1038 1039 return null; 1040 } 1041 1042 private void invalidateRectOnScreen(Rect dirty) { 1043 final Rect localDirty = mDirty; 1044 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 1045 mAttachInfo.mSetIgnoreDirtyState = true; 1046 mAttachInfo.mIgnoreDirtyState = true; 1047 } 1048 1049 // Add the new dirty rect to the current one 1050 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 1051 // Intersect with the bounds of the window to skip 1052 // updates that lie outside of the visible region 1053 final float appScale = mAttachInfo.mApplicationScale; 1054 final boolean intersected = localDirty.intersect(0, 0, 1055 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 1056 if (!intersected) { 1057 localDirty.setEmpty(); 1058 } 1059 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 1060 scheduleTraversals(); 1061 } 1062 } 1063 1064 public void setIsAmbientMode(boolean ambient) { 1065 mIsAmbientMode = ambient; 1066 } 1067 1068 void setWindowStopped(boolean stopped) { 1069 if (mStopped != stopped) { 1070 mStopped = stopped; 1071 if (!mStopped) { 1072 scheduleTraversals(); 1073 } 1074 } 1075 } 1076 1077 /** 1078 * Block the input events during an Activity Transition. The KEYCODE_BACK event is allowed 1079 * through to allow quick reversal of the Activity Transition. 1080 * 1081 * @param paused true to pause, false to resume. 1082 */ 1083 public void setPausedForTransition(boolean paused) { 1084 mPausedForTransition = paused; 1085 } 1086 1087 @Override 1088 public ViewParent getParent() { 1089 return null; 1090 } 1091 1092 @Override 1093 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 1094 if (child != mView) { 1095 throw new RuntimeException("child is not mine, honest!"); 1096 } 1097 // Note: don't apply scroll offset, because we want to know its 1098 // visibility in the virtual canvas being given to the view hierarchy. 1099 return r.intersect(0, 0, mWidth, mHeight); 1100 } 1101 1102 @Override 1103 public void bringChildToFront(View child) { 1104 } 1105 1106 int getHostVisibility() { 1107 return (mAppVisible || mForceDecorViewVisibility) ? mView.getVisibility() : View.GONE; 1108 } 1109 1110 /** 1111 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1112 * This list will be cleared after the transitions on the list are start()'ed. These 1113 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1114 * happens during the layout phase of traversal, which we want to complete before any of the 1115 * animations are started (because those animations may side-effect properties that layout 1116 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1117 * to the list and it is started just prior to starting the drawing phase of traversal. 1118 * 1119 * @param transition The LayoutTransition to be started on the next traversal. 1120 * 1121 * @hide 1122 */ 1123 public void requestTransitionStart(LayoutTransition transition) { 1124 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1125 if (mPendingTransitions == null) { 1126 mPendingTransitions = new ArrayList<LayoutTransition>(); 1127 } 1128 mPendingTransitions.add(transition); 1129 } 1130 } 1131 1132 /** 1133 * Notifies the HardwareRenderer that a new frame will be coming soon. 1134 * Currently only {@link ThreadedRenderer} cares about this, and uses 1135 * this knowledge to adjust the scheduling of off-thread animations 1136 */ 1137 void notifyRendererOfFramePending() { 1138 if (mAttachInfo.mHardwareRenderer != null) { 1139 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1140 } 1141 } 1142 1143 void scheduleTraversals() { 1144 if (!mTraversalScheduled) { 1145 mTraversalScheduled = true; 1146 mTraversalBarrier = mHandler.getLooper().getQueue().postSyncBarrier(); 1147 mChoreographer.postCallback( 1148 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1149 if (!mUnbufferedInputDispatch) { 1150 scheduleConsumeBatchedInput(); 1151 } 1152 notifyRendererOfFramePending(); 1153 pokeDrawLockIfNeeded(); 1154 } 1155 } 1156 1157 void unscheduleTraversals() { 1158 if (mTraversalScheduled) { 1159 mTraversalScheduled = false; 1160 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1161 mChoreographer.removeCallbacks( 1162 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1163 } 1164 } 1165 1166 void doTraversal() { 1167 if (mTraversalScheduled) { 1168 mTraversalScheduled = false; 1169 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1170 1171 if (mProfile) { 1172 Debug.startMethodTracing("ViewAncestor"); 1173 } 1174 1175 performTraversals(); 1176 1177 if (mProfile) { 1178 Debug.stopMethodTracing(); 1179 mProfile = false; 1180 } 1181 } 1182 } 1183 1184 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1185 // Update window's global keep screen on flag: if a view has requested 1186 // that the screen be kept on, then it is always set; otherwise, it is 1187 // set to whatever the client last requested for the global state. 1188 if (mAttachInfo.mKeepScreenOn) { 1189 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1190 } else { 1191 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1192 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1193 } 1194 } 1195 1196 private boolean collectViewAttributes() { 1197 if (mAttachInfo.mRecomputeGlobalAttributes) { 1198 //Log.i(mTag, "Computing view hierarchy attributes!"); 1199 mAttachInfo.mRecomputeGlobalAttributes = false; 1200 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1201 mAttachInfo.mKeepScreenOn = false; 1202 mAttachInfo.mSystemUiVisibility = 0; 1203 mAttachInfo.mHasSystemUiListeners = false; 1204 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1205 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1206 WindowManager.LayoutParams params = mWindowAttributes; 1207 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1208 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1209 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1210 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1211 applyKeepScreenOnFlag(params); 1212 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1213 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1214 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1215 return true; 1216 } 1217 } 1218 return false; 1219 } 1220 1221 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1222 int vis = 0; 1223 // Translucent decor window flags imply stable system ui visibility. 1224 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1225 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1226 } 1227 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1228 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1229 } 1230 return vis; 1231 } 1232 1233 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1234 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1235 int childWidthMeasureSpec; 1236 int childHeightMeasureSpec; 1237 boolean windowSizeMayChange = false; 1238 1239 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(mTag, 1240 "Measuring " + host + " in display " + desiredWindowWidth 1241 + "x" + desiredWindowHeight + "..."); 1242 1243 boolean goodMeasure = false; 1244 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1245 // On large screens, we don't want to allow dialogs to just 1246 // stretch to fill the entire width of the screen to display 1247 // one line of text. First try doing the layout at a smaller 1248 // size to see if it will fit. 1249 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1250 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1251 int baseSize = 0; 1252 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1253 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1254 } 1255 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": baseSize=" + baseSize 1256 + ", desiredWindowWidth=" + desiredWindowWidth); 1257 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1258 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1259 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1260 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1261 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1262 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() 1263 + ") from width spec: " + MeasureSpec.toString(childWidthMeasureSpec) 1264 + " and height spec: " + MeasureSpec.toString(childHeightMeasureSpec)); 1265 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1266 goodMeasure = true; 1267 } else { 1268 // Didn't fit in that size... try expanding a bit. 1269 baseSize = (baseSize+desiredWindowWidth)/2; 1270 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": next baseSize=" 1271 + baseSize); 1272 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1273 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1274 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1275 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1276 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1277 if (DEBUG_DIALOG) Log.v(mTag, "Good!"); 1278 goodMeasure = true; 1279 } 1280 } 1281 } 1282 } 1283 1284 if (!goodMeasure) { 1285 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1286 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1287 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1288 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1289 windowSizeMayChange = true; 1290 } 1291 } 1292 1293 if (DBG) { 1294 System.out.println("======================================"); 1295 System.out.println("performTraversals -- after measure"); 1296 host.debug(); 1297 } 1298 1299 return windowSizeMayChange; 1300 } 1301 1302 /** 1303 * Modifies the input matrix such that it maps view-local coordinates to 1304 * on-screen coordinates. 1305 * 1306 * @param m input matrix to modify 1307 */ 1308 void transformMatrixToGlobal(Matrix m) { 1309 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1310 } 1311 1312 /** 1313 * Modifies the input matrix such that it maps on-screen coordinates to 1314 * view-local coordinates. 1315 * 1316 * @param m input matrix to modify 1317 */ 1318 void transformMatrixToLocal(Matrix m) { 1319 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1320 } 1321 1322 /* package */ WindowInsets getWindowInsets(boolean forceConstruct) { 1323 if (mLastWindowInsets == null || forceConstruct) { 1324 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1325 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1326 Rect contentInsets = mDispatchContentInsets; 1327 Rect stableInsets = mDispatchStableInsets; 1328 // For dispatch we preserve old logic, but for direct requests from Views we allow to 1329 // immediately use pending insets. 1330 if (!forceConstruct 1331 && (!mPendingContentInsets.equals(contentInsets) || 1332 !mPendingStableInsets.equals(stableInsets))) { 1333 contentInsets = mPendingContentInsets; 1334 stableInsets = mPendingStableInsets; 1335 } 1336 Rect outsets = mAttachInfo.mOutsets; 1337 if (outsets.left > 0 || outsets.top > 0 || outsets.right > 0 || outsets.bottom > 0) { 1338 contentInsets = new Rect(contentInsets.left + outsets.left, 1339 contentInsets.top + outsets.top, contentInsets.right + outsets.right, 1340 contentInsets.bottom + outsets.bottom); 1341 } 1342 mLastWindowInsets = new WindowInsets(contentInsets, 1343 null /* windowDecorInsets */, stableInsets, 1344 mContext.getResources().getConfiguration().isScreenRound()); 1345 } 1346 return mLastWindowInsets; 1347 } 1348 1349 void dispatchApplyInsets(View host) { 1350 host.dispatchApplyWindowInsets(getWindowInsets(true /* forceConstruct */)); 1351 } 1352 1353 private static boolean shouldUseDisplaySize(final WindowManager.LayoutParams lp) { 1354 return lp.type == TYPE_STATUS_BAR_PANEL 1355 || lp.type == TYPE_INPUT_METHOD 1356 || lp.type == TYPE_VOLUME_OVERLAY; 1357 } 1358 1359 private int dipToPx(int dip) { 1360 final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics(); 1361 return (int) (displayMetrics.density * dip + 0.5f); 1362 } 1363 1364 private void performTraversals() { 1365 // cache mView since it is used so much below... 1366 final View host = mView; 1367 1368 if (DBG) { 1369 System.out.println("======================================"); 1370 System.out.println("performTraversals"); 1371 host.debug(); 1372 } 1373 1374 if (host == null || !mAdded) 1375 return; 1376 1377 mIsInTraversal = true; 1378 mWillDrawSoon = true; 1379 boolean windowSizeMayChange = false; 1380 boolean newSurface = false; 1381 boolean surfaceChanged = false; 1382 WindowManager.LayoutParams lp = mWindowAttributes; 1383 1384 int desiredWindowWidth; 1385 int desiredWindowHeight; 1386 1387 final int viewVisibility = getHostVisibility(); 1388 final boolean viewVisibilityChanged = !mFirst 1389 && (mViewVisibility != viewVisibility || mNewSurfaceNeeded); 1390 1391 WindowManager.LayoutParams params = null; 1392 if (mWindowAttributesChanged) { 1393 mWindowAttributesChanged = false; 1394 surfaceChanged = true; 1395 params = lp; 1396 } 1397 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1398 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1399 params = lp; 1400 mFullRedrawNeeded = true; 1401 mLayoutRequested = true; 1402 if (mLastInCompatMode) { 1403 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1404 mLastInCompatMode = false; 1405 } else { 1406 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1407 mLastInCompatMode = true; 1408 } 1409 } 1410 1411 mWindowAttributesChangesFlag = 0; 1412 1413 Rect frame = mWinFrame; 1414 if (mFirst) { 1415 mFullRedrawNeeded = true; 1416 mLayoutRequested = true; 1417 1418 if (shouldUseDisplaySize(lp)) { 1419 // NOTE -- system code, won't try to do compat mode. 1420 Point size = new Point(); 1421 mDisplay.getRealSize(size); 1422 desiredWindowWidth = size.x; 1423 desiredWindowHeight = size.y; 1424 } else { 1425 Configuration config = mContext.getResources().getConfiguration(); 1426 desiredWindowWidth = dipToPx(config.screenWidthDp); 1427 desiredWindowHeight = dipToPx(config.screenHeightDp); 1428 } 1429 1430 // We used to use the following condition to choose 32 bits drawing caches: 1431 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1432 // However, windows are now always 32 bits by default, so choose 32 bits 1433 mAttachInfo.mUse32BitDrawingCache = true; 1434 mAttachInfo.mHasWindowFocus = false; 1435 mAttachInfo.mWindowVisibility = viewVisibility; 1436 mAttachInfo.mRecomputeGlobalAttributes = false; 1437 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1438 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1439 // Set the layout direction if it has not been set before (inherit is the default) 1440 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1441 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1442 } 1443 host.dispatchAttachedToWindow(mAttachInfo, 0); 1444 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1445 dispatchApplyInsets(host); 1446 //Log.i(mTag, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1447 1448 } else { 1449 desiredWindowWidth = frame.width(); 1450 desiredWindowHeight = frame.height(); 1451 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1452 if (DEBUG_ORIENTATION) Log.v(mTag, "View " + host + " resized to: " + frame); 1453 mFullRedrawNeeded = true; 1454 mLayoutRequested = true; 1455 windowSizeMayChange = true; 1456 } 1457 } 1458 1459 if (viewVisibilityChanged) { 1460 mAttachInfo.mWindowVisibility = viewVisibility; 1461 host.dispatchWindowVisibilityChanged(viewVisibility); 1462 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1463 endDragResizing(); 1464 destroyHardwareResources(); 1465 } 1466 if (viewVisibility == View.GONE) { 1467 // After making a window gone, we will count it as being 1468 // shown for the first time the next time it gets focus. 1469 mHasHadWindowFocus = false; 1470 } 1471 } 1472 1473 // Non-visible windows can't hold accessibility focus. 1474 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1475 host.clearAccessibilityFocus(); 1476 } 1477 1478 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1479 getRunQueue().executeActions(mAttachInfo.mHandler); 1480 1481 boolean insetsChanged = false; 1482 1483 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1484 if (layoutRequested) { 1485 1486 final Resources res = mView.getContext().getResources(); 1487 1488 if (mFirst) { 1489 // make sure touch mode code executes by setting cached value 1490 // to opposite of the added touch mode. 1491 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1492 ensureTouchModeLocally(mAddedTouchMode); 1493 } else { 1494 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1495 insetsChanged = true; 1496 } 1497 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1498 insetsChanged = true; 1499 } 1500 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1501 insetsChanged = true; 1502 } 1503 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1504 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1505 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1506 + mAttachInfo.mVisibleInsets); 1507 } 1508 if (!mPendingOutsets.equals(mAttachInfo.mOutsets)) { 1509 insetsChanged = true; 1510 } 1511 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1512 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1513 windowSizeMayChange = true; 1514 1515 if (shouldUseDisplaySize(lp)) { 1516 // NOTE -- system code, won't try to do compat mode. 1517 Point size = new Point(); 1518 mDisplay.getRealSize(size); 1519 desiredWindowWidth = size.x; 1520 desiredWindowHeight = size.y; 1521 } else { 1522 Configuration config = res.getConfiguration(); 1523 desiredWindowWidth = dipToPx(config.screenWidthDp); 1524 desiredWindowHeight = dipToPx(config.screenHeightDp); 1525 } 1526 } 1527 } 1528 1529 // Ask host how big it wants to be 1530 windowSizeMayChange |= measureHierarchy(host, lp, res, 1531 desiredWindowWidth, desiredWindowHeight); 1532 } 1533 1534 if (collectViewAttributes()) { 1535 params = lp; 1536 } 1537 if (mAttachInfo.mForceReportNewAttributes) { 1538 mAttachInfo.mForceReportNewAttributes = false; 1539 params = lp; 1540 } 1541 1542 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1543 mAttachInfo.mViewVisibilityChanged = false; 1544 int resizeMode = mSoftInputMode & 1545 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1546 // If we are in auto resize mode, then we need to determine 1547 // what mode to use now. 1548 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1549 final int N = mAttachInfo.mScrollContainers.size(); 1550 for (int i=0; i<N; i++) { 1551 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1552 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1553 } 1554 } 1555 if (resizeMode == 0) { 1556 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1557 } 1558 if ((lp.softInputMode & 1559 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1560 lp.softInputMode = (lp.softInputMode & 1561 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1562 resizeMode; 1563 params = lp; 1564 } 1565 } 1566 } 1567 1568 if (params != null) { 1569 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1570 if (!PixelFormat.formatHasAlpha(params.format)) { 1571 params.format = PixelFormat.TRANSLUCENT; 1572 } 1573 } 1574 mAttachInfo.mOverscanRequested = (params.flags 1575 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1576 } 1577 1578 if (mApplyInsetsRequested) { 1579 mApplyInsetsRequested = false; 1580 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1581 dispatchApplyInsets(host); 1582 if (mLayoutRequested) { 1583 // Short-circuit catching a new layout request here, so 1584 // we don't need to go through two layout passes when things 1585 // change due to fitting system windows, which can happen a lot. 1586 windowSizeMayChange |= measureHierarchy(host, lp, 1587 mView.getContext().getResources(), 1588 desiredWindowWidth, desiredWindowHeight); 1589 } 1590 } 1591 1592 if (layoutRequested) { 1593 // Clear this now, so that if anything requests a layout in the 1594 // rest of this function we will catch it and re-run a full 1595 // layout pass. 1596 mLayoutRequested = false; 1597 } 1598 1599 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1600 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1601 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1602 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1603 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1604 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1605 windowShouldResize |= mDragResizing && mResizeMode == RESIZE_MODE_FREEFORM; 1606 1607 // If the backdrop frame doesn't equal to a frame, we are starting a resize operation, so 1608 // force it to be resized. 1609 windowShouldResize |= !mPendingBackDropFrame.equals(mWinFrame); 1610 1611 // If the activity was just relaunched, it might have unfrozen the task bounds (while 1612 // relaunching), so we need to force a call into window manager to pick up the latest 1613 // bounds. 1614 windowShouldResize |= mActivityRelaunched; 1615 1616 // Determine whether to compute insets. 1617 // If there are no inset listeners remaining then we may still need to compute 1618 // insets in case the old insets were non-empty and must be reset. 1619 final boolean computesInternalInsets = 1620 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1621 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1622 1623 boolean insetsPending = false; 1624 int relayoutResult = 0; 1625 1626 final boolean isViewVisible = viewVisibility == View.VISIBLE; 1627 if (mFirst || windowShouldResize || insetsChanged || 1628 viewVisibilityChanged || params != null) { 1629 1630 if (isViewVisible) { 1631 // If this window is giving internal insets to the window 1632 // manager, and it is being added or changing its visibility, 1633 // then we want to first give the window manager "fake" 1634 // insets to cause it to effectively ignore the content of 1635 // the window during layout. This avoids it briefly causing 1636 // other windows to resize/move based on the raw frame of the 1637 // window, waiting until we can finish laying out this window 1638 // and get back to the window manager with the ultimately 1639 // computed insets. 1640 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1641 } 1642 1643 if (mSurfaceHolder != null) { 1644 mSurfaceHolder.mSurfaceLock.lock(); 1645 mDrawingAllowed = true; 1646 } 1647 1648 boolean hwInitialized = false; 1649 boolean contentInsetsChanged = false; 1650 boolean hadSurface = mSurface.isValid(); 1651 1652 try { 1653 if (DEBUG_LAYOUT) { 1654 Log.i(mTag, "host=w:" + host.getMeasuredWidth() + ", h:" + 1655 host.getMeasuredHeight() + ", params=" + params); 1656 } 1657 1658 if (mAttachInfo.mHardwareRenderer != null) { 1659 // relayoutWindow may decide to destroy mSurface. As that decision 1660 // happens in WindowManager service, we need to be defensive here 1661 // and stop using the surface in case it gets destroyed. 1662 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1663 // Animations were running so we need to push a frame 1664 // to resume them 1665 mDirty.set(0, 0, mWidth, mHeight); 1666 } 1667 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1668 } 1669 final int surfaceGenerationId = mSurface.getGenerationId(); 1670 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1671 1672 if (DEBUG_LAYOUT) Log.v(mTag, "relayout: frame=" + frame.toShortString() 1673 + " overscan=" + mPendingOverscanInsets.toShortString() 1674 + " content=" + mPendingContentInsets.toShortString() 1675 + " visible=" + mPendingVisibleInsets.toShortString() 1676 + " visible=" + mPendingStableInsets.toShortString() 1677 + " outsets=" + mPendingOutsets.toShortString() 1678 + " surface=" + mSurface); 1679 1680 if (mPendingConfiguration.seq != 0) { 1681 if (DEBUG_CONFIGURATION) Log.v(mTag, "Visible with new config: " 1682 + mPendingConfiguration); 1683 updateConfiguration(new Configuration(mPendingConfiguration), !mFirst); 1684 mPendingConfiguration.seq = 0; 1685 } 1686 1687 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1688 mAttachInfo.mOverscanInsets); 1689 contentInsetsChanged = !mPendingContentInsets.equals( 1690 mAttachInfo.mContentInsets); 1691 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1692 mAttachInfo.mVisibleInsets); 1693 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1694 mAttachInfo.mStableInsets); 1695 final boolean outsetsChanged = !mPendingOutsets.equals(mAttachInfo.mOutsets); 1696 final boolean surfaceSizeChanged = (relayoutResult 1697 & WindowManagerGlobal.RELAYOUT_RES_SURFACE_RESIZED) != 0; 1698 if (contentInsetsChanged) { 1699 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1700 if (DEBUG_LAYOUT) Log.v(mTag, "Content insets changing to: " 1701 + mAttachInfo.mContentInsets); 1702 } 1703 if (overscanInsetsChanged) { 1704 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1705 if (DEBUG_LAYOUT) Log.v(mTag, "Overscan insets changing to: " 1706 + mAttachInfo.mOverscanInsets); 1707 // Need to relayout with content insets. 1708 contentInsetsChanged = true; 1709 } 1710 if (stableInsetsChanged) { 1711 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1712 if (DEBUG_LAYOUT) Log.v(mTag, "Decor insets changing to: " 1713 + mAttachInfo.mStableInsets); 1714 // Need to relayout with content insets. 1715 contentInsetsChanged = true; 1716 } 1717 if (contentInsetsChanged || mLastSystemUiVisibility != 1718 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1719 || mLastOverscanRequested != mAttachInfo.mOverscanRequested 1720 || outsetsChanged) { 1721 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1722 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1723 mAttachInfo.mOutsets.set(mPendingOutsets); 1724 mApplyInsetsRequested = false; 1725 dispatchApplyInsets(host); 1726 } 1727 if (visibleInsetsChanged) { 1728 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1729 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1730 + mAttachInfo.mVisibleInsets); 1731 } 1732 1733 if (!hadSurface) { 1734 if (mSurface.isValid()) { 1735 // If we are creating a new surface, then we need to 1736 // completely redraw it. Also, when we get to the 1737 // point of drawing it we will hold off and schedule 1738 // a new traversal instead. This is so we can tell the 1739 // window manager about all of the windows being displayed 1740 // before actually drawing them, so it can display then 1741 // all at once. 1742 newSurface = true; 1743 mFullRedrawNeeded = true; 1744 mPreviousTransparentRegion.setEmpty(); 1745 1746 // Only initialize up-front if transparent regions are not 1747 // requested, otherwise defer to see if the entire window 1748 // will be transparent 1749 if (mAttachInfo.mHardwareRenderer != null) { 1750 try { 1751 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1752 mSurface); 1753 if (hwInitialized && (host.mPrivateFlags 1754 & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) == 0) { 1755 // Don't pre-allocate if transparent regions 1756 // are requested as they may not be needed 1757 mSurface.allocateBuffers(); 1758 } 1759 } catch (OutOfResourcesException e) { 1760 handleOutOfResourcesException(e); 1761 return; 1762 } 1763 } 1764 } 1765 } else if (!mSurface.isValid()) { 1766 // If the surface has been removed, then reset the scroll 1767 // positions. 1768 if (mLastScrolledFocus != null) { 1769 mLastScrolledFocus.clear(); 1770 } 1771 mScrollY = mCurScrollY = 0; 1772 if (mView instanceof RootViewSurfaceTaker) { 1773 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1774 } 1775 if (mScroller != null) { 1776 mScroller.abortAnimation(); 1777 } 1778 // Our surface is gone 1779 if (mAttachInfo.mHardwareRenderer != null && 1780 mAttachInfo.mHardwareRenderer.isEnabled()) { 1781 mAttachInfo.mHardwareRenderer.destroy(); 1782 } 1783 } else if ((surfaceGenerationId != mSurface.getGenerationId() 1784 || surfaceSizeChanged) 1785 && mSurfaceHolder == null 1786 && mAttachInfo.mHardwareRenderer != null) { 1787 mFullRedrawNeeded = true; 1788 try { 1789 // Need to do updateSurface (which leads to CanvasContext::setSurface and 1790 // re-create the EGLSurface) if either the Surface changed (as indicated by 1791 // generation id), or WindowManager changed the surface size. The latter is 1792 // because on some chips, changing the consumer side's BufferQueue size may 1793 // not take effect immediately unless we create a new EGLSurface. 1794 // Note that frame size change doesn't always imply surface size change (eg. 1795 // drag resizing uses fullscreen surface), need to check surfaceSizeChanged 1796 // flag from WindowManager. 1797 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1798 } catch (OutOfResourcesException e) { 1799 handleOutOfResourcesException(e); 1800 return; 1801 } 1802 } 1803 1804 final boolean freeformResizing = (relayoutResult 1805 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_FREEFORM) != 0; 1806 final boolean dockedResizing = (relayoutResult 1807 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_DOCKED) != 0; 1808 final boolean dragResizing = freeformResizing || dockedResizing; 1809 if (mDragResizing != dragResizing) { 1810 if (dragResizing) { 1811 startDragResizing(mPendingBackDropFrame); 1812 mResizeMode = freeformResizing 1813 ? RESIZE_MODE_FREEFORM 1814 : RESIZE_MODE_DOCKED_DIVIDER; 1815 } else { 1816 // We shouldn't come here, but if we come we should end the resize. 1817 endDragResizing(); 1818 } 1819 } 1820 if (!USE_MT_RENDERER) { 1821 if (dragResizing) { 1822 mCanvasOffsetX = mWinFrame.left; 1823 mCanvasOffsetY = mWinFrame.top; 1824 } else { 1825 mCanvasOffsetX = mCanvasOffsetY = 0; 1826 } 1827 } 1828 } catch (RemoteException e) { 1829 } 1830 1831 if (DEBUG_ORIENTATION) Log.v( 1832 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1833 1834 mAttachInfo.mWindowLeft = frame.left; 1835 mAttachInfo.mWindowTop = frame.top; 1836 1837 // !!FIXME!! This next section handles the case where we did not get the 1838 // window size we asked for. We should avoid this by getting a maximum size from 1839 // the window session beforehand. 1840 if (mWidth != frame.width() || mHeight != frame.height()) { 1841 mWidth = frame.width(); 1842 mHeight = frame.height(); 1843 } 1844 1845 if (mSurfaceHolder != null) { 1846 // The app owns the surface; tell it about what is going on. 1847 if (mSurface.isValid()) { 1848 // XXX .copyFrom() doesn't work! 1849 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1850 mSurfaceHolder.mSurface = mSurface; 1851 } 1852 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1853 mSurfaceHolder.mSurfaceLock.unlock(); 1854 if (mSurface.isValid()) { 1855 if (!hadSurface) { 1856 mSurfaceHolder.ungetCallbacks(); 1857 1858 mIsCreating = true; 1859 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1860 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1861 if (callbacks != null) { 1862 for (SurfaceHolder.Callback c : callbacks) { 1863 c.surfaceCreated(mSurfaceHolder); 1864 } 1865 } 1866 surfaceChanged = true; 1867 } 1868 if (surfaceChanged) { 1869 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1870 lp.format, mWidth, mHeight); 1871 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1872 if (callbacks != null) { 1873 for (SurfaceHolder.Callback c : callbacks) { 1874 c.surfaceChanged(mSurfaceHolder, lp.format, 1875 mWidth, mHeight); 1876 } 1877 } 1878 } 1879 mIsCreating = false; 1880 } else if (hadSurface) { 1881 mSurfaceHolder.ungetCallbacks(); 1882 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1883 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1884 if (callbacks != null) { 1885 for (SurfaceHolder.Callback c : callbacks) { 1886 c.surfaceDestroyed(mSurfaceHolder); 1887 } 1888 } 1889 mSurfaceHolder.mSurfaceLock.lock(); 1890 try { 1891 mSurfaceHolder.mSurface = new Surface(); 1892 } finally { 1893 mSurfaceHolder.mSurfaceLock.unlock(); 1894 } 1895 } 1896 } 1897 1898 final ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 1899 if (hardwareRenderer != null && hardwareRenderer.isEnabled()) { 1900 if (hwInitialized 1901 || mWidth != hardwareRenderer.getWidth() 1902 || mHeight != hardwareRenderer.getHeight()) { 1903 hardwareRenderer.setup(mWidth, mHeight, mAttachInfo, 1904 mWindowAttributes.surfaceInsets); 1905 } 1906 } 1907 1908 if (!mStopped || mReportNextDraw) { 1909 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1910 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1911 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1912 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1913 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1914 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1915 1916 if (DEBUG_LAYOUT) Log.v(mTag, "Ooops, something changed! mWidth=" 1917 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1918 + " mHeight=" + mHeight 1919 + " measuredHeight=" + host.getMeasuredHeight() 1920 + " coveredInsetsChanged=" + contentInsetsChanged); 1921 1922 // Ask host how big it wants to be 1923 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1924 1925 // Implementation of weights from WindowManager.LayoutParams 1926 // We just grow the dimensions as needed and re-measure if 1927 // needs be 1928 int width = host.getMeasuredWidth(); 1929 int height = host.getMeasuredHeight(); 1930 boolean measureAgain = false; 1931 1932 if (lp.horizontalWeight > 0.0f) { 1933 width += (int) ((mWidth - width) * lp.horizontalWeight); 1934 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1935 MeasureSpec.EXACTLY); 1936 measureAgain = true; 1937 } 1938 if (lp.verticalWeight > 0.0f) { 1939 height += (int) ((mHeight - height) * lp.verticalWeight); 1940 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1941 MeasureSpec.EXACTLY); 1942 measureAgain = true; 1943 } 1944 1945 if (measureAgain) { 1946 if (DEBUG_LAYOUT) Log.v(mTag, 1947 "And hey let's measure once more: width=" + width 1948 + " height=" + height); 1949 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1950 } 1951 1952 layoutRequested = true; 1953 } 1954 } 1955 } else { 1956 // Not the first pass and no window/insets/visibility change but the window 1957 // may have moved and we need check that and if so to update the left and right 1958 // in the attach info. We translate only the window frame since on window move 1959 // the window manager tells us only for the new frame but the insets are the 1960 // same and we do not want to translate them more than once. 1961 maybeHandleWindowMove(frame); 1962 } 1963 1964 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 1965 boolean triggerGlobalLayoutListener = didLayout 1966 || mAttachInfo.mRecomputeGlobalAttributes; 1967 if (didLayout) { 1968 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1969 1970 // By this point all views have been sized and positioned 1971 // We can compute the transparent area 1972 1973 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1974 // start out transparent 1975 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1976 host.getLocationInWindow(mTmpLocation); 1977 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1978 mTmpLocation[0] + host.mRight - host.mLeft, 1979 mTmpLocation[1] + host.mBottom - host.mTop); 1980 1981 host.gatherTransparentRegion(mTransparentRegion); 1982 if (mTranslator != null) { 1983 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1984 } 1985 1986 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1987 mPreviousTransparentRegion.set(mTransparentRegion); 1988 mFullRedrawNeeded = true; 1989 // reconfigure window manager 1990 try { 1991 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1992 } catch (RemoteException e) { 1993 } 1994 } 1995 } 1996 1997 if (DBG) { 1998 System.out.println("======================================"); 1999 System.out.println("performTraversals -- after setFrame"); 2000 host.debug(); 2001 } 2002 } 2003 2004 if (triggerGlobalLayoutListener) { 2005 mAttachInfo.mRecomputeGlobalAttributes = false; 2006 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 2007 } 2008 2009 if (computesInternalInsets) { 2010 // Clear the original insets. 2011 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 2012 insets.reset(); 2013 2014 // Compute new insets in place. 2015 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 2016 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 2017 2018 // Tell the window manager. 2019 if (insetsPending || !mLastGivenInsets.equals(insets)) { 2020 mLastGivenInsets.set(insets); 2021 2022 // Translate insets to screen coordinates if needed. 2023 final Rect contentInsets; 2024 final Rect visibleInsets; 2025 final Region touchableRegion; 2026 if (mTranslator != null) { 2027 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 2028 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 2029 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 2030 } else { 2031 contentInsets = insets.contentInsets; 2032 visibleInsets = insets.visibleInsets; 2033 touchableRegion = insets.touchableRegion; 2034 } 2035 2036 try { 2037 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 2038 contentInsets, visibleInsets, touchableRegion); 2039 } catch (RemoteException e) { 2040 } 2041 } 2042 } 2043 2044 if (mFirst) { 2045 // handle first focus request 2046 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: mView.hasFocus()=" 2047 + mView.hasFocus()); 2048 if (mView != null) { 2049 if (!mView.hasFocus()) { 2050 mView.requestFocus(View.FOCUS_FORWARD); 2051 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: requested focused view=" 2052 + mView.findFocus()); 2053 } else { 2054 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: existing focused view=" 2055 + mView.findFocus()); 2056 } 2057 } 2058 } 2059 2060 final boolean changedVisibility = (viewVisibilityChanged || mFirst) && isViewVisible; 2061 final boolean hasWindowFocus = mAttachInfo.mHasWindowFocus && isViewVisible; 2062 final boolean regainedFocus = hasWindowFocus && mLostWindowFocus; 2063 if (regainedFocus) { 2064 mLostWindowFocus = false; 2065 } else if (!hasWindowFocus && mHadWindowFocus) { 2066 mLostWindowFocus = true; 2067 } 2068 2069 if (changedVisibility || regainedFocus) { 2070 host.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2071 } 2072 2073 mFirst = false; 2074 mWillDrawSoon = false; 2075 mNewSurfaceNeeded = false; 2076 mActivityRelaunched = false; 2077 mViewVisibility = viewVisibility; 2078 mHadWindowFocus = hasWindowFocus; 2079 2080 if (hasWindowFocus && !isInLocalFocusMode()) { 2081 final boolean imTarget = WindowManager.LayoutParams 2082 .mayUseInputMethod(mWindowAttributes.flags); 2083 if (imTarget != mLastWasImTarget) { 2084 mLastWasImTarget = imTarget; 2085 InputMethodManager imm = InputMethodManager.peekInstance(); 2086 if (imm != null && imTarget) { 2087 imm.onPreWindowFocus(mView, hasWindowFocus); 2088 imm.onPostWindowFocus(mView, mView.findFocus(), 2089 mWindowAttributes.softInputMode, 2090 !mHasHadWindowFocus, mWindowAttributes.flags); 2091 } 2092 } 2093 } 2094 2095 // Remember if we must report the next draw. 2096 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 2097 mReportNextDraw = true; 2098 } 2099 2100 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || !isViewVisible; 2101 2102 if (!cancelDraw && !newSurface) { 2103 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2104 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2105 mPendingTransitions.get(i).startChangingAnimations(); 2106 } 2107 mPendingTransitions.clear(); 2108 } 2109 2110 performDraw(); 2111 } else { 2112 if (isViewVisible) { 2113 // Try again 2114 scheduleTraversals(); 2115 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2116 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2117 mPendingTransitions.get(i).endChangingAnimations(); 2118 } 2119 mPendingTransitions.clear(); 2120 } 2121 } 2122 2123 mIsInTraversal = false; 2124 } 2125 2126 private void maybeHandleWindowMove(Rect frame) { 2127 2128 // TODO: Well, we are checking whether the frame has changed similarly 2129 // to how this is done for the insets. This is however incorrect since 2130 // the insets and the frame are translated. For example, the old frame 2131 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 2132 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 2133 // true since we are comparing a not translated value to a translated one. 2134 // This scenario is rare but we may want to fix that. 2135 2136 final boolean windowMoved = mAttachInfo.mWindowLeft != frame.left 2137 || mAttachInfo.mWindowTop != frame.top; 2138 if (windowMoved) { 2139 if (mTranslator != null) { 2140 mTranslator.translateRectInScreenToAppWinFrame(frame); 2141 } 2142 mAttachInfo.mWindowLeft = frame.left; 2143 mAttachInfo.mWindowTop = frame.top; 2144 2145 // Update the light position for the new window offsets. 2146 if (mAttachInfo.mHardwareRenderer != null) { 2147 mAttachInfo.mHardwareRenderer.setLightCenter(mAttachInfo); 2148 } 2149 } 2150 } 2151 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2152 Log.e(mTag, "OutOfResourcesException initializing HW surface", e); 2153 try { 2154 if (!mWindowSession.outOfMemory(mWindow) && 2155 Process.myUid() != Process.SYSTEM_UID) { 2156 Slog.w(mTag, "No processes killed for memory; killing self"); 2157 Process.killProcess(Process.myPid()); 2158 } 2159 } catch (RemoteException ex) { 2160 } 2161 mLayoutRequested = true; // ask wm for a new surface next time. 2162 } 2163 2164 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2165 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2166 try { 2167 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2168 } finally { 2169 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2170 } 2171 } 2172 2173 /** 2174 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2175 * is currently undergoing a layout pass. 2176 * 2177 * @return whether the view hierarchy is currently undergoing a layout pass 2178 */ 2179 boolean isInLayout() { 2180 return mInLayout; 2181 } 2182 2183 /** 2184 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2185 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2186 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2187 * all children in that container hierarchy are measured and laid out at the end of the layout 2188 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2189 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2190 * we check all of those views to see if any still have pending layout requests, which 2191 * indicates that they were not correctly handled by their container hierarchy. If that is 2192 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2193 * to blank containers, and force a second request/measure/layout pass in this frame. If 2194 * more requestLayout() calls are received during that second layout pass, we post those 2195 * requests to the next frame to avoid possible infinite loops. 2196 * 2197 * <p>The return value from this method indicates whether the request should proceed 2198 * (if it is a request during the first layout pass) or should be skipped and posted to the 2199 * next frame (if it is a request during the second layout pass).</p> 2200 * 2201 * @param view the view that requested the layout. 2202 * 2203 * @return true if request should proceed, false otherwise. 2204 */ 2205 boolean requestLayoutDuringLayout(final View view) { 2206 if (view.mParent == null || view.mAttachInfo == null) { 2207 // Would not normally trigger another layout, so just let it pass through as usual 2208 return true; 2209 } 2210 if (!mLayoutRequesters.contains(view)) { 2211 mLayoutRequesters.add(view); 2212 } 2213 if (!mHandlingLayoutInLayoutRequest) { 2214 // Let the request proceed normally; it will be processed in a second layout pass 2215 // if necessary 2216 return true; 2217 } else { 2218 // Don't let the request proceed during the second layout pass. 2219 // It will post to the next frame instead. 2220 return false; 2221 } 2222 } 2223 2224 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2225 int desiredWindowHeight) { 2226 mLayoutRequested = false; 2227 mScrollMayChange = true; 2228 mInLayout = true; 2229 2230 final View host = mView; 2231 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2232 Log.v(mTag, "Laying out " + host + " to (" + 2233 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2234 } 2235 2236 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2237 try { 2238 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2239 2240 mInLayout = false; 2241 int numViewsRequestingLayout = mLayoutRequesters.size(); 2242 if (numViewsRequestingLayout > 0) { 2243 // requestLayout() was called during layout. 2244 // If no layout-request flags are set on the requesting views, there is no problem. 2245 // If some requests are still pending, then we need to clear those flags and do 2246 // a full request/measure/layout pass to handle this situation. 2247 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2248 false); 2249 if (validLayoutRequesters != null) { 2250 // Set this flag to indicate that any further requests are happening during 2251 // the second pass, which may result in posting those requests to the next 2252 // frame instead 2253 mHandlingLayoutInLayoutRequest = true; 2254 2255 // Process fresh layout requests, then measure and layout 2256 int numValidRequests = validLayoutRequesters.size(); 2257 for (int i = 0; i < numValidRequests; ++i) { 2258 final View view = validLayoutRequesters.get(i); 2259 Log.w("View", "requestLayout() improperly called by " + view + 2260 " during layout: running second layout pass"); 2261 view.requestLayout(); 2262 } 2263 measureHierarchy(host, lp, mView.getContext().getResources(), 2264 desiredWindowWidth, desiredWindowHeight); 2265 mInLayout = true; 2266 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2267 2268 mHandlingLayoutInLayoutRequest = false; 2269 2270 // Check the valid requests again, this time without checking/clearing the 2271 // layout flags, since requests happening during the second pass get noop'd 2272 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2273 if (validLayoutRequesters != null) { 2274 final ArrayList<View> finalRequesters = validLayoutRequesters; 2275 // Post second-pass requests to the next frame 2276 getRunQueue().post(new Runnable() { 2277 @Override 2278 public void run() { 2279 int numValidRequests = finalRequesters.size(); 2280 for (int i = 0; i < numValidRequests; ++i) { 2281 final View view = finalRequesters.get(i); 2282 Log.w("View", "requestLayout() improperly called by " + view + 2283 " during second layout pass: posting in next frame"); 2284 view.requestLayout(); 2285 } 2286 } 2287 }); 2288 } 2289 } 2290 2291 } 2292 } finally { 2293 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2294 } 2295 mInLayout = false; 2296 } 2297 2298 /** 2299 * This method is called during layout when there have been calls to requestLayout() during 2300 * layout. It walks through the list of views that requested layout to determine which ones 2301 * still need it, based on visibility in the hierarchy and whether they have already been 2302 * handled (as is usually the case with ListView children). 2303 * 2304 * @param layoutRequesters The list of views that requested layout during layout 2305 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2306 * If so, the FORCE_LAYOUT flag was not set on requesters. 2307 * @return A list of the actual views that still need to be laid out. 2308 */ 2309 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2310 boolean secondLayoutRequests) { 2311 2312 int numViewsRequestingLayout = layoutRequesters.size(); 2313 ArrayList<View> validLayoutRequesters = null; 2314 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2315 View view = layoutRequesters.get(i); 2316 if (view != null && view.mAttachInfo != null && view.mParent != null && 2317 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2318 View.PFLAG_FORCE_LAYOUT)) { 2319 boolean gone = false; 2320 View parent = view; 2321 // Only trigger new requests for views in a non-GONE hierarchy 2322 while (parent != null) { 2323 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2324 gone = true; 2325 break; 2326 } 2327 if (parent.mParent instanceof View) { 2328 parent = (View) parent.mParent; 2329 } else { 2330 parent = null; 2331 } 2332 } 2333 if (!gone) { 2334 if (validLayoutRequesters == null) { 2335 validLayoutRequesters = new ArrayList<View>(); 2336 } 2337 validLayoutRequesters.add(view); 2338 } 2339 } 2340 } 2341 if (!secondLayoutRequests) { 2342 // If we're checking the layout flags, then we need to clean them up also 2343 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2344 View view = layoutRequesters.get(i); 2345 while (view != null && 2346 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2347 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2348 if (view.mParent instanceof View) { 2349 view = (View) view.mParent; 2350 } else { 2351 view = null; 2352 } 2353 } 2354 } 2355 } 2356 layoutRequesters.clear(); 2357 return validLayoutRequesters; 2358 } 2359 2360 @Override 2361 public void requestTransparentRegion(View child) { 2362 // the test below should not fail unless someone is messing with us 2363 checkThread(); 2364 if (mView == child) { 2365 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2366 // Need to make sure we re-evaluate the window attributes next 2367 // time around, to ensure the window has the correct format. 2368 mWindowAttributesChanged = true; 2369 mWindowAttributesChangesFlag = 0; 2370 requestLayout(); 2371 } 2372 } 2373 2374 /** 2375 * Figures out the measure spec for the root view in a window based on it's 2376 * layout params. 2377 * 2378 * @param windowSize 2379 * The available width or height of the window 2380 * 2381 * @param rootDimension 2382 * The layout params for one dimension (width or height) of the 2383 * window. 2384 * 2385 * @return The measure spec to use to measure the root view. 2386 */ 2387 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2388 int measureSpec; 2389 switch (rootDimension) { 2390 2391 case ViewGroup.LayoutParams.MATCH_PARENT: 2392 // Window can't resize. Force root view to be windowSize. 2393 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2394 break; 2395 case ViewGroup.LayoutParams.WRAP_CONTENT: 2396 // Window can resize. Set max size for root view. 2397 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2398 break; 2399 default: 2400 // Window wants to be an exact size. Force root view to be that size. 2401 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2402 break; 2403 } 2404 return measureSpec; 2405 } 2406 2407 int mHardwareXOffset; 2408 int mHardwareYOffset; 2409 2410 @Override 2411 public void onHardwarePreDraw(DisplayListCanvas canvas) { 2412 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2413 } 2414 2415 @Override 2416 public void onHardwarePostDraw(DisplayListCanvas canvas) { 2417 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2418 } 2419 2420 /** 2421 * @hide 2422 */ 2423 void outputDisplayList(View view) { 2424 view.mRenderNode.output(); 2425 if (mAttachInfo.mHardwareRenderer != null) { 2426 ((ThreadedRenderer)mAttachInfo.mHardwareRenderer).serializeDisplayListTree(); 2427 } 2428 } 2429 2430 /** 2431 * @see #PROPERTY_PROFILE_RENDERING 2432 */ 2433 private void profileRendering(boolean enabled) { 2434 if (mProfileRendering) { 2435 mRenderProfilingEnabled = enabled; 2436 2437 if (mRenderProfiler != null) { 2438 mChoreographer.removeFrameCallback(mRenderProfiler); 2439 } 2440 if (mRenderProfilingEnabled) { 2441 if (mRenderProfiler == null) { 2442 mRenderProfiler = new Choreographer.FrameCallback() { 2443 @Override 2444 public void doFrame(long frameTimeNanos) { 2445 mDirty.set(0, 0, mWidth, mHeight); 2446 scheduleTraversals(); 2447 if (mRenderProfilingEnabled) { 2448 mChoreographer.postFrameCallback(mRenderProfiler); 2449 } 2450 } 2451 }; 2452 } 2453 mChoreographer.postFrameCallback(mRenderProfiler); 2454 } else { 2455 mRenderProfiler = null; 2456 } 2457 } 2458 } 2459 2460 /** 2461 * Called from draw() when DEBUG_FPS is enabled 2462 */ 2463 private void trackFPS() { 2464 // Tracks frames per second drawn. First value in a series of draws may be bogus 2465 // because it down not account for the intervening idle time 2466 long nowTime = System.currentTimeMillis(); 2467 if (mFpsStartTime < 0) { 2468 mFpsStartTime = mFpsPrevTime = nowTime; 2469 mFpsNumFrames = 0; 2470 } else { 2471 ++mFpsNumFrames; 2472 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2473 long frameTime = nowTime - mFpsPrevTime; 2474 long totalTime = nowTime - mFpsStartTime; 2475 Log.v(mTag, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2476 mFpsPrevTime = nowTime; 2477 if (totalTime > 1000) { 2478 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2479 Log.v(mTag, "0x" + thisHash + "\tFPS:\t" + fps); 2480 mFpsStartTime = nowTime; 2481 mFpsNumFrames = 0; 2482 } 2483 } 2484 } 2485 2486 private void performDraw() { 2487 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2488 return; 2489 } 2490 2491 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2492 mFullRedrawNeeded = false; 2493 2494 mIsDrawing = true; 2495 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2496 try { 2497 draw(fullRedrawNeeded); 2498 } finally { 2499 mIsDrawing = false; 2500 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2501 } 2502 2503 // For whatever reason we didn't create a HardwareRenderer, end any 2504 // hardware animations that are now dangling 2505 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2506 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2507 for (int i = 0; i < count; i++) { 2508 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2509 } 2510 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2511 } 2512 2513 if (mReportNextDraw) { 2514 mReportNextDraw = false; 2515 2516 // if we're using multi-thread renderer, wait for the window frame draws 2517 if (mWindowDrawCountDown != null) { 2518 try { 2519 mWindowDrawCountDown.await(); 2520 } catch (InterruptedException e) { 2521 Log.e(mTag, "Window redraw count down interruped!"); 2522 } 2523 mWindowDrawCountDown = null; 2524 } 2525 2526 if (mAttachInfo.mHardwareRenderer != null) { 2527 mAttachInfo.mHardwareRenderer.fence(); 2528 } 2529 2530 if (LOCAL_LOGV) { 2531 Log.v(mTag, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2532 } 2533 if (mSurfaceHolder != null && mSurface.isValid()) { 2534 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2535 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2536 if (callbacks != null) { 2537 for (SurfaceHolder.Callback c : callbacks) { 2538 if (c instanceof SurfaceHolder.Callback2) { 2539 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded(mSurfaceHolder); 2540 } 2541 } 2542 } 2543 } 2544 try { 2545 mWindowSession.finishDrawing(mWindow); 2546 } catch (RemoteException e) { 2547 } 2548 } 2549 } 2550 2551 private void draw(boolean fullRedrawNeeded) { 2552 Surface surface = mSurface; 2553 if (!surface.isValid()) { 2554 return; 2555 } 2556 2557 if (DEBUG_FPS) { 2558 trackFPS(); 2559 } 2560 2561 if (!sFirstDrawComplete) { 2562 synchronized (sFirstDrawHandlers) { 2563 sFirstDrawComplete = true; 2564 final int count = sFirstDrawHandlers.size(); 2565 for (int i = 0; i< count; i++) { 2566 mHandler.post(sFirstDrawHandlers.get(i)); 2567 } 2568 } 2569 } 2570 2571 scrollToRectOrFocus(null, false); 2572 2573 if (mAttachInfo.mViewScrollChanged) { 2574 mAttachInfo.mViewScrollChanged = false; 2575 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2576 } 2577 2578 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2579 final int curScrollY; 2580 if (animating) { 2581 curScrollY = mScroller.getCurrY(); 2582 } else { 2583 curScrollY = mScrollY; 2584 } 2585 if (mCurScrollY != curScrollY) { 2586 mCurScrollY = curScrollY; 2587 fullRedrawNeeded = true; 2588 if (mView instanceof RootViewSurfaceTaker) { 2589 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2590 } 2591 } 2592 2593 final float appScale = mAttachInfo.mApplicationScale; 2594 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2595 2596 int resizeAlpha = 0; 2597 2598 final Rect dirty = mDirty; 2599 if (mSurfaceHolder != null) { 2600 // The app owns the surface, we won't draw. 2601 dirty.setEmpty(); 2602 if (animating && mScroller != null) { 2603 mScroller.abortAnimation(); 2604 } 2605 return; 2606 } 2607 2608 if (fullRedrawNeeded) { 2609 mAttachInfo.mIgnoreDirtyState = true; 2610 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2611 } 2612 2613 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2614 Log.v(mTag, "Draw " + mView + "/" 2615 + mWindowAttributes.getTitle() 2616 + ": dirty={" + dirty.left + "," + dirty.top 2617 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2618 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2619 appScale + ", width=" + mWidth + ", height=" + mHeight); 2620 } 2621 2622 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2623 2624 int xOffset = -mCanvasOffsetX; 2625 int yOffset = -mCanvasOffsetY + curScrollY; 2626 final WindowManager.LayoutParams params = mWindowAttributes; 2627 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2628 if (surfaceInsets != null) { 2629 xOffset -= surfaceInsets.left; 2630 yOffset -= surfaceInsets.top; 2631 2632 // Offset dirty rect for surface insets. 2633 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2634 } 2635 2636 boolean accessibilityFocusDirty = false; 2637 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2638 if (drawable != null) { 2639 final Rect bounds = mAttachInfo.mTmpInvalRect; 2640 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2641 if (!hasFocus) { 2642 bounds.setEmpty(); 2643 } 2644 if (!bounds.equals(drawable.getBounds())) { 2645 accessibilityFocusDirty = true; 2646 } 2647 } 2648 2649 mAttachInfo.mDrawingTime = 2650 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2651 2652 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2653 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2654 // If accessibility focus moved, always invalidate the root. 2655 boolean invalidateRoot = accessibilityFocusDirty; 2656 2657 // Draw with hardware renderer. 2658 mIsAnimating = false; 2659 2660 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2661 mHardwareYOffset = yOffset; 2662 mHardwareXOffset = xOffset; 2663 invalidateRoot = true; 2664 } 2665 2666 if (invalidateRoot) { 2667 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2668 } 2669 2670 dirty.setEmpty(); 2671 2672 // Stage the content drawn size now. It will be transferred to the renderer 2673 // shortly before the draw commands get send to the renderer. 2674 final boolean updated = updateContentDrawBounds(); 2675 2676 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2677 2678 if (updated) { 2679 requestDrawWindow(); 2680 } 2681 } else { 2682 // If we get here with a disabled & requested hardware renderer, something went 2683 // wrong (an invalidate posted right before we destroyed the hardware surface 2684 // for instance) so we should just bail out. Locking the surface with software 2685 // rendering at this point would lock it forever and prevent hardware renderer 2686 // from doing its job when it comes back. 2687 // Before we request a new frame we must however attempt to reinitiliaze the 2688 // hardware renderer if it's in requested state. This would happen after an 2689 // eglTerminate() for instance. 2690 if (mAttachInfo.mHardwareRenderer != null && 2691 !mAttachInfo.mHardwareRenderer.isEnabled() && 2692 mAttachInfo.mHardwareRenderer.isRequested()) { 2693 2694 try { 2695 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2696 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 2697 } catch (OutOfResourcesException e) { 2698 handleOutOfResourcesException(e); 2699 return; 2700 } 2701 2702 mFullRedrawNeeded = true; 2703 scheduleTraversals(); 2704 return; 2705 } 2706 2707 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2708 return; 2709 } 2710 } 2711 } 2712 2713 if (animating) { 2714 mFullRedrawNeeded = true; 2715 scheduleTraversals(); 2716 } 2717 } 2718 2719 /** 2720 * @return true if drawing was successful, false if an error occurred 2721 */ 2722 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2723 boolean scalingRequired, Rect dirty) { 2724 2725 // Draw with software renderer. 2726 final Canvas canvas; 2727 try { 2728 final int left = dirty.left; 2729 final int top = dirty.top; 2730 final int right = dirty.right; 2731 final int bottom = dirty.bottom; 2732 2733 canvas = mSurface.lockCanvas(dirty); 2734 2735 // The dirty rectangle can be modified by Surface.lockCanvas() 2736 //noinspection ConstantConditions 2737 if (left != dirty.left || top != dirty.top || right != dirty.right 2738 || bottom != dirty.bottom) { 2739 attachInfo.mIgnoreDirtyState = true; 2740 } 2741 2742 // TODO: Do this in native 2743 canvas.setDensity(mDensity); 2744 } catch (Surface.OutOfResourcesException e) { 2745 handleOutOfResourcesException(e); 2746 return false; 2747 } catch (IllegalArgumentException e) { 2748 Log.e(mTag, "Could not lock surface", e); 2749 // Don't assume this is due to out of memory, it could be 2750 // something else, and if it is something else then we could 2751 // kill stuff (or ourself) for no reason. 2752 mLayoutRequested = true; // ask wm for a new surface next time. 2753 return false; 2754 } 2755 2756 try { 2757 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2758 Log.v(mTag, "Surface " + surface + " drawing to bitmap w=" 2759 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2760 //canvas.drawARGB(255, 255, 0, 0); 2761 } 2762 2763 // If this bitmap's format includes an alpha channel, we 2764 // need to clear it before drawing so that the child will 2765 // properly re-composite its drawing on a transparent 2766 // background. This automatically respects the clip/dirty region 2767 // or 2768 // If we are applying an offset, we need to clear the area 2769 // where the offset doesn't appear to avoid having garbage 2770 // left in the blank areas. 2771 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2772 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2773 } 2774 2775 dirty.setEmpty(); 2776 mIsAnimating = false; 2777 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2778 2779 if (DEBUG_DRAW) { 2780 Context cxt = mView.getContext(); 2781 Log.i(mTag, "Drawing: package:" + cxt.getPackageName() + 2782 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2783 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2784 } 2785 try { 2786 canvas.translate(-xoff, -yoff); 2787 if (mTranslator != null) { 2788 mTranslator.translateCanvas(canvas); 2789 } 2790 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2791 attachInfo.mSetIgnoreDirtyState = false; 2792 2793 mView.draw(canvas); 2794 2795 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2796 } finally { 2797 if (!attachInfo.mSetIgnoreDirtyState) { 2798 // Only clear the flag if it was not set during the mView.draw() call 2799 attachInfo.mIgnoreDirtyState = false; 2800 } 2801 } 2802 } finally { 2803 try { 2804 surface.unlockCanvasAndPost(canvas); 2805 } catch (IllegalArgumentException e) { 2806 Log.e(mTag, "Could not unlock surface", e); 2807 mLayoutRequested = true; // ask wm for a new surface next time. 2808 //noinspection ReturnInsideFinallyBlock 2809 return false; 2810 } 2811 2812 if (LOCAL_LOGV) { 2813 Log.v(mTag, "Surface " + surface + " unlockCanvasAndPost"); 2814 } 2815 } 2816 return true; 2817 } 2818 2819 /** 2820 * We want to draw a highlight around the current accessibility focused. 2821 * Since adding a style for all possible view is not a viable option we 2822 * have this specialized drawing method. 2823 * 2824 * Note: We are doing this here to be able to draw the highlight for 2825 * virtual views in addition to real ones. 2826 * 2827 * @param canvas The canvas on which to draw. 2828 */ 2829 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2830 final Rect bounds = mAttachInfo.mTmpInvalRect; 2831 if (getAccessibilityFocusedRect(bounds)) { 2832 final Drawable drawable = getAccessibilityFocusedDrawable(); 2833 if (drawable != null) { 2834 drawable.setBounds(bounds); 2835 drawable.draw(canvas); 2836 } 2837 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2838 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2839 } 2840 } 2841 2842 private boolean getAccessibilityFocusedRect(Rect bounds) { 2843 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2844 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2845 return false; 2846 } 2847 2848 final View host = mAccessibilityFocusedHost; 2849 if (host == null || host.mAttachInfo == null) { 2850 return false; 2851 } 2852 2853 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2854 if (provider == null) { 2855 host.getBoundsOnScreen(bounds, true); 2856 } else if (mAccessibilityFocusedVirtualView != null) { 2857 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2858 } else { 2859 return false; 2860 } 2861 2862 // Transform the rect into window-relative coordinates. 2863 final AttachInfo attachInfo = mAttachInfo; 2864 bounds.offset(0, attachInfo.mViewRootImpl.mScrollY); 2865 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2866 if (!bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, 2867 attachInfo.mViewRootImpl.mHeight)) { 2868 // If no intersection, set bounds to empty. 2869 bounds.setEmpty(); 2870 } 2871 return !bounds.isEmpty(); 2872 } 2873 2874 private Drawable getAccessibilityFocusedDrawable() { 2875 // Lazily load the accessibility focus drawable. 2876 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2877 final TypedValue value = new TypedValue(); 2878 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2879 R.attr.accessibilityFocusedDrawable, value, true); 2880 if (resolved) { 2881 mAttachInfo.mAccessibilityFocusDrawable = 2882 mView.mContext.getDrawable(value.resourceId); 2883 } 2884 } 2885 return mAttachInfo.mAccessibilityFocusDrawable; 2886 } 2887 2888 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2889 final Rect ci = mAttachInfo.mContentInsets; 2890 final Rect vi = mAttachInfo.mVisibleInsets; 2891 int scrollY = 0; 2892 boolean handled = false; 2893 2894 if (vi.left > ci.left || vi.top > ci.top 2895 || vi.right > ci.right || vi.bottom > ci.bottom) { 2896 // We'll assume that we aren't going to change the scroll 2897 // offset, since we want to avoid that unless it is actually 2898 // going to make the focus visible... otherwise we scroll 2899 // all over the place. 2900 scrollY = mScrollY; 2901 // We can be called for two different situations: during a draw, 2902 // to update the scroll position if the focus has changed (in which 2903 // case 'rectangle' is null), or in response to a 2904 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2905 // is non-null and we just want to scroll to whatever that 2906 // rectangle is). 2907 final View focus = mView.findFocus(); 2908 if (focus == null) { 2909 return false; 2910 } 2911 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2912 if (focus != lastScrolledFocus) { 2913 // If the focus has changed, then ignore any requests to scroll 2914 // to a rectangle; first we want to make sure the entire focus 2915 // view is visible. 2916 rectangle = null; 2917 } 2918 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Eval scroll: focus=" + focus 2919 + " rectangle=" + rectangle + " ci=" + ci 2920 + " vi=" + vi); 2921 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2922 // Optimization: if the focus hasn't changed since last 2923 // time, and no layout has happened, then just leave things 2924 // as they are. 2925 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Keeping scroll y=" 2926 + mScrollY + " vi=" + vi.toShortString()); 2927 } else { 2928 // We need to determine if the currently focused view is 2929 // within the visible part of the window and, if not, apply 2930 // a pan so it can be seen. 2931 mLastScrolledFocus = new WeakReference<View>(focus); 2932 mScrollMayChange = false; 2933 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Need to scroll?"); 2934 // Try to find the rectangle from the focus view. 2935 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2936 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Root w=" 2937 + mView.getWidth() + " h=" + mView.getHeight() 2938 + " ci=" + ci.toShortString() 2939 + " vi=" + vi.toShortString()); 2940 if (rectangle == null) { 2941 focus.getFocusedRect(mTempRect); 2942 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Focus " + focus 2943 + ": focusRect=" + mTempRect.toShortString()); 2944 if (mView instanceof ViewGroup) { 2945 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2946 focus, mTempRect); 2947 } 2948 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2949 "Focus in window: focusRect=" 2950 + mTempRect.toShortString() 2951 + " visRect=" + mVisRect.toShortString()); 2952 } else { 2953 mTempRect.set(rectangle); 2954 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2955 "Request scroll to rect: " 2956 + mTempRect.toShortString() 2957 + " visRect=" + mVisRect.toShortString()); 2958 } 2959 if (mTempRect.intersect(mVisRect)) { 2960 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2961 "Focus window visible rect: " 2962 + mTempRect.toShortString()); 2963 if (mTempRect.height() > 2964 (mView.getHeight()-vi.top-vi.bottom)) { 2965 // If the focus simply is not going to fit, then 2966 // best is probably just to leave things as-is. 2967 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2968 "Too tall; leaving scrollY=" + scrollY); 2969 } else if ((mTempRect.top-scrollY) < vi.top) { 2970 scrollY -= vi.top - (mTempRect.top-scrollY); 2971 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2972 "Top covered; scrollY=" + scrollY); 2973 } else if ((mTempRect.bottom-scrollY) 2974 > (mView.getHeight()-vi.bottom)) { 2975 scrollY += (mTempRect.bottom-scrollY) 2976 - (mView.getHeight()-vi.bottom); 2977 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2978 "Bottom covered; scrollY=" + scrollY); 2979 } 2980 handled = true; 2981 } 2982 } 2983 } 2984 } 2985 2986 if (scrollY != mScrollY) { 2987 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Pan scroll changed: old=" 2988 + mScrollY + " , new=" + scrollY); 2989 if (!immediate) { 2990 if (mScroller == null) { 2991 mScroller = new Scroller(mView.getContext()); 2992 } 2993 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2994 } else if (mScroller != null) { 2995 mScroller.abortAnimation(); 2996 } 2997 mScrollY = scrollY; 2998 } 2999 3000 return handled; 3001 } 3002 3003 /** 3004 * @hide 3005 */ 3006 public View getAccessibilityFocusedHost() { 3007 return mAccessibilityFocusedHost; 3008 } 3009 3010 /** 3011 * @hide 3012 */ 3013 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 3014 return mAccessibilityFocusedVirtualView; 3015 } 3016 3017 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 3018 // If we have a virtual view with accessibility focus we need 3019 // to clear the focus and invalidate the virtual view bounds. 3020 if (mAccessibilityFocusedVirtualView != null) { 3021 3022 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 3023 View focusHost = mAccessibilityFocusedHost; 3024 3025 // Wipe the state of the current accessibility focus since 3026 // the call into the provider to clear accessibility focus 3027 // will fire an accessibility event which will end up calling 3028 // this method and we want to have clean state when this 3029 // invocation happens. 3030 mAccessibilityFocusedHost = null; 3031 mAccessibilityFocusedVirtualView = null; 3032 3033 // Clear accessibility focus on the host after clearing state since 3034 // this method may be reentrant. 3035 focusHost.clearAccessibilityFocusNoCallbacks(); 3036 3037 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 3038 if (provider != null) { 3039 // Invalidate the area of the cleared accessibility focus. 3040 focusNode.getBoundsInParent(mTempRect); 3041 focusHost.invalidate(mTempRect); 3042 // Clear accessibility focus in the virtual node. 3043 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 3044 focusNode.getSourceNodeId()); 3045 provider.performAction(virtualNodeId, 3046 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 3047 } 3048 focusNode.recycle(); 3049 } 3050 if (mAccessibilityFocusedHost != null) { 3051 // Clear accessibility focus in the view. 3052 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 3053 } 3054 3055 // Set the new focus host and node. 3056 mAccessibilityFocusedHost = view; 3057 mAccessibilityFocusedVirtualView = node; 3058 3059 if (mAttachInfo.mHardwareRenderer != null) { 3060 mAttachInfo.mHardwareRenderer.invalidateRoot(); 3061 } 3062 } 3063 3064 void setPointerCapture(View view) { 3065 if (!mAttachInfo.mHasWindowFocus) { 3066 Log.w(mTag, "Can't set capture if it's not focused."); 3067 return; 3068 } 3069 if (mCapturingView == view) { 3070 return; 3071 } 3072 mCapturingView = view; 3073 InputManager.getInstance().setPointerIconDetached(true); 3074 } 3075 3076 void releasePointerCapture(View view) { 3077 if (mCapturingView != view || mCapturingView == null) { 3078 return; 3079 } 3080 3081 mCapturingView = null; 3082 InputManager.getInstance().setPointerIconDetached(false); 3083 } 3084 3085 boolean hasPointerCapture(View view) { 3086 return view != null && mCapturingView == view; 3087 } 3088 3089 @Override 3090 public void requestChildFocus(View child, View focused) { 3091 if (DEBUG_INPUT_RESIZE) { 3092 Log.v(mTag, "Request child focus: focus now " + focused); 3093 } 3094 checkThread(); 3095 scheduleTraversals(); 3096 } 3097 3098 @Override 3099 public void clearChildFocus(View child) { 3100 if (DEBUG_INPUT_RESIZE) { 3101 Log.v(mTag, "Clearing child focus"); 3102 } 3103 checkThread(); 3104 scheduleTraversals(); 3105 } 3106 3107 @Override 3108 public ViewParent getParentForAccessibility() { 3109 return null; 3110 } 3111 3112 @Override 3113 public void focusableViewAvailable(View v) { 3114 checkThread(); 3115 if (mView != null) { 3116 if (!mView.hasFocus()) { 3117 v.requestFocus(); 3118 } else { 3119 // the one case where will transfer focus away from the current one 3120 // is if the current view is a view group that prefers to give focus 3121 // to its children first AND the view is a descendant of it. 3122 View focused = mView.findFocus(); 3123 if (focused instanceof ViewGroup) { 3124 ViewGroup group = (ViewGroup) focused; 3125 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3126 && isViewDescendantOf(v, focused)) { 3127 v.requestFocus(); 3128 } 3129 } 3130 } 3131 } 3132 } 3133 3134 @Override 3135 public void recomputeViewAttributes(View child) { 3136 checkThread(); 3137 if (mView == child) { 3138 mAttachInfo.mRecomputeGlobalAttributes = true; 3139 if (!mWillDrawSoon) { 3140 scheduleTraversals(); 3141 } 3142 } 3143 } 3144 3145 void dispatchDetachedFromWindow() { 3146 if (mView != null && mView.mAttachInfo != null) { 3147 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 3148 mView.dispatchDetachedFromWindow(); 3149 } 3150 3151 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 3152 mAccessibilityManager.removeAccessibilityStateChangeListener( 3153 mAccessibilityInteractionConnectionManager); 3154 mAccessibilityManager.removeHighTextContrastStateChangeListener( 3155 mHighContrastTextManager); 3156 removeSendWindowContentChangedCallback(); 3157 3158 destroyHardwareRenderer(); 3159 3160 setAccessibilityFocus(null, null); 3161 3162 mView.assignParent(null); 3163 mView = null; 3164 mAttachInfo.mRootView = null; 3165 3166 if (mCapturingView != null) { 3167 releasePointerCapture(mCapturingView); 3168 } 3169 3170 mSurface.release(); 3171 3172 if (mInputQueueCallback != null && mInputQueue != null) { 3173 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 3174 mInputQueue.dispose(); 3175 mInputQueueCallback = null; 3176 mInputQueue = null; 3177 } 3178 if (mInputEventReceiver != null) { 3179 mInputEventReceiver.dispose(); 3180 mInputEventReceiver = null; 3181 } 3182 try { 3183 mWindowSession.remove(mWindow); 3184 } catch (RemoteException e) { 3185 } 3186 3187 // Dispose the input channel after removing the window so the Window Manager 3188 // doesn't interpret the input channel being closed as an abnormal termination. 3189 if (mInputChannel != null) { 3190 mInputChannel.dispose(); 3191 mInputChannel = null; 3192 } 3193 3194 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3195 3196 unscheduleTraversals(); 3197 } 3198 3199 void updateConfiguration(Configuration config, boolean force) { 3200 if (DEBUG_CONFIGURATION) Log.v(mTag, 3201 "Applying new config to window " 3202 + mWindowAttributes.getTitle() 3203 + ": " + config); 3204 3205 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3206 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3207 config = new Configuration(config); 3208 ci.applyToConfiguration(mNoncompatDensity, config); 3209 } 3210 3211 synchronized (sConfigCallbacks) { 3212 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3213 sConfigCallbacks.get(i).onConfigurationChanged(config); 3214 } 3215 } 3216 if (mView != null) { 3217 // At this point the resources have been updated to 3218 // have the most recent config, whatever that is. Use 3219 // the one in them which may be newer. 3220 config = mView.getResources().getConfiguration(); 3221 if (force || mLastConfiguration.diff(config) != 0) { 3222 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3223 final int currentLayoutDirection = config.getLayoutDirection(); 3224 mLastConfiguration.setTo(config); 3225 if (lastLayoutDirection != currentLayoutDirection && 3226 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3227 mView.setLayoutDirection(currentLayoutDirection); 3228 } 3229 mView.dispatchConfigurationChanged(config); 3230 } 3231 } 3232 } 3233 3234 /** 3235 * Return true if child is an ancestor of parent, (or equal to the parent). 3236 */ 3237 public static boolean isViewDescendantOf(View child, View parent) { 3238 if (child == parent) { 3239 return true; 3240 } 3241 3242 final ViewParent theParent = child.getParent(); 3243 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3244 } 3245 3246 private static void forceLayout(View view) { 3247 view.forceLayout(); 3248 if (view instanceof ViewGroup) { 3249 ViewGroup group = (ViewGroup) view; 3250 final int count = group.getChildCount(); 3251 for (int i = 0; i < count; i++) { 3252 forceLayout(group.getChildAt(i)); 3253 } 3254 } 3255 } 3256 3257 private final static int MSG_INVALIDATE = 1; 3258 private final static int MSG_INVALIDATE_RECT = 2; 3259 private final static int MSG_DIE = 3; 3260 private final static int MSG_RESIZED = 4; 3261 private final static int MSG_RESIZED_REPORT = 5; 3262 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3263 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3264 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3265 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3266 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3267 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 3268 private final static int MSG_CHECK_FOCUS = 13; 3269 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3270 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3271 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3272 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3273 private final static int MSG_UPDATE_CONFIGURATION = 18; 3274 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3275 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3276 private final static int MSG_INVALIDATE_WORLD = 22; 3277 private final static int MSG_WINDOW_MOVED = 23; 3278 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 24; 3279 private final static int MSG_DISPATCH_WINDOW_SHOWN = 25; 3280 private final static int MSG_REQUEST_KEYBOARD_SHORTCUTS = 26; 3281 private final static int MSG_UPDATE_POINTER_ICON = 27; 3282 3283 final class ViewRootHandler extends Handler { 3284 @Override 3285 public String getMessageName(Message message) { 3286 switch (message.what) { 3287 case MSG_INVALIDATE: 3288 return "MSG_INVALIDATE"; 3289 case MSG_INVALIDATE_RECT: 3290 return "MSG_INVALIDATE_RECT"; 3291 case MSG_DIE: 3292 return "MSG_DIE"; 3293 case MSG_RESIZED: 3294 return "MSG_RESIZED"; 3295 case MSG_RESIZED_REPORT: 3296 return "MSG_RESIZED_REPORT"; 3297 case MSG_WINDOW_FOCUS_CHANGED: 3298 return "MSG_WINDOW_FOCUS_CHANGED"; 3299 case MSG_DISPATCH_INPUT_EVENT: 3300 return "MSG_DISPATCH_INPUT_EVENT"; 3301 case MSG_DISPATCH_APP_VISIBILITY: 3302 return "MSG_DISPATCH_APP_VISIBILITY"; 3303 case MSG_DISPATCH_GET_NEW_SURFACE: 3304 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3305 case MSG_DISPATCH_KEY_FROM_IME: 3306 return "MSG_DISPATCH_KEY_FROM_IME"; 3307 case MSG_FINISH_INPUT_CONNECTION: 3308 return "MSG_FINISH_INPUT_CONNECTION"; 3309 case MSG_CHECK_FOCUS: 3310 return "MSG_CHECK_FOCUS"; 3311 case MSG_CLOSE_SYSTEM_DIALOGS: 3312 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3313 case MSG_DISPATCH_DRAG_EVENT: 3314 return "MSG_DISPATCH_DRAG_EVENT"; 3315 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3316 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3317 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3318 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3319 case MSG_UPDATE_CONFIGURATION: 3320 return "MSG_UPDATE_CONFIGURATION"; 3321 case MSG_PROCESS_INPUT_EVENTS: 3322 return "MSG_PROCESS_INPUT_EVENTS"; 3323 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3324 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3325 case MSG_WINDOW_MOVED: 3326 return "MSG_WINDOW_MOVED"; 3327 case MSG_SYNTHESIZE_INPUT_EVENT: 3328 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3329 case MSG_DISPATCH_WINDOW_SHOWN: 3330 return "MSG_DISPATCH_WINDOW_SHOWN"; 3331 case MSG_UPDATE_POINTER_ICON: 3332 return "MSG_UPDATE_POINTER_ICON"; 3333 } 3334 return super.getMessageName(message); 3335 } 3336 3337 @Override 3338 public void handleMessage(Message msg) { 3339 switch (msg.what) { 3340 case MSG_INVALIDATE: 3341 ((View) msg.obj).invalidate(); 3342 break; 3343 case MSG_INVALIDATE_RECT: 3344 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3345 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3346 info.recycle(); 3347 break; 3348 case MSG_PROCESS_INPUT_EVENTS: 3349 mProcessInputEventsScheduled = false; 3350 doProcessInputEvents(); 3351 break; 3352 case MSG_DISPATCH_APP_VISIBILITY: 3353 handleAppVisibility(msg.arg1 != 0); 3354 break; 3355 case MSG_DISPATCH_GET_NEW_SURFACE: 3356 handleGetNewSurface(); 3357 break; 3358 case MSG_RESIZED: { 3359 // Recycled in the fall through... 3360 SomeArgs args = (SomeArgs) msg.obj; 3361 if (mWinFrame.equals(args.arg1) 3362 && mPendingOverscanInsets.equals(args.arg5) 3363 && mPendingContentInsets.equals(args.arg2) 3364 && mPendingStableInsets.equals(args.arg6) 3365 && mPendingVisibleInsets.equals(args.arg3) 3366 && mPendingOutsets.equals(args.arg7) 3367 && mPendingBackDropFrame.equals(args.arg8) 3368 && args.arg4 == null) { 3369 break; 3370 } 3371 } // fall through... 3372 case MSG_RESIZED_REPORT: 3373 if (mAdded) { 3374 SomeArgs args = (SomeArgs) msg.obj; 3375 3376 Configuration config = (Configuration) args.arg4; 3377 if (config != null) { 3378 updateConfiguration(config, false); 3379 } 3380 3381 mWinFrame.set((Rect) args.arg1); 3382 mPendingOverscanInsets.set((Rect) args.arg5); 3383 mPendingContentInsets.set((Rect) args.arg2); 3384 mPendingStableInsets.set((Rect) args.arg6); 3385 mPendingVisibleInsets.set((Rect) args.arg3); 3386 mPendingOutsets.set((Rect) args.arg7); 3387 mPendingBackDropFrame.set((Rect) args.arg8); 3388 3389 args.recycle(); 3390 3391 if (msg.what == MSG_RESIZED_REPORT) { 3392 mReportNextDraw = true; 3393 } 3394 3395 if (mView != null) { 3396 forceLayout(mView); 3397 } 3398 3399 requestLayout(); 3400 } 3401 break; 3402 case MSG_WINDOW_MOVED: 3403 if (mAdded) { 3404 final int w = mWinFrame.width(); 3405 final int h = mWinFrame.height(); 3406 final int l = msg.arg1; 3407 final int t = msg.arg2; 3408 mWinFrame.left = l; 3409 mWinFrame.right = l + w; 3410 mWinFrame.top = t; 3411 mWinFrame.bottom = t + h; 3412 3413 mPendingBackDropFrame.set(mWinFrame); 3414 3415 // Suppress layouts during resizing - a correct layout will happen when resizing 3416 // is done, and this just increases system load. 3417 boolean isDockedDivider = mWindowAttributes.type == TYPE_DOCK_DIVIDER; 3418 boolean suppress = (mDragResizing && mResizeMode == RESIZE_MODE_DOCKED_DIVIDER) 3419 || isDockedDivider; 3420 if (!suppress) { 3421 if (mView != null) { 3422 forceLayout(mView); 3423 } 3424 requestLayout(); 3425 } else { 3426 maybeHandleWindowMove(mWinFrame); 3427 } 3428 } 3429 break; 3430 case MSG_WINDOW_FOCUS_CHANGED: { 3431 if (mAdded) { 3432 boolean hasWindowFocus = msg.arg1 != 0; 3433 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3434 3435 profileRendering(hasWindowFocus); 3436 3437 if (hasWindowFocus) { 3438 boolean inTouchMode = msg.arg2 != 0; 3439 ensureTouchModeLocally(inTouchMode); 3440 3441 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3442 mFullRedrawNeeded = true; 3443 try { 3444 final WindowManager.LayoutParams lp = mWindowAttributes; 3445 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3446 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3447 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 3448 } catch (OutOfResourcesException e) { 3449 Log.e(mTag, "OutOfResourcesException locking surface", e); 3450 try { 3451 if (!mWindowSession.outOfMemory(mWindow)) { 3452 Slog.w(mTag, "No processes killed for memory; killing self"); 3453 Process.killProcess(Process.myPid()); 3454 } 3455 } catch (RemoteException ex) { 3456 } 3457 // Retry in a bit. 3458 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3459 return; 3460 } 3461 } 3462 } 3463 3464 mLastWasImTarget = WindowManager.LayoutParams 3465 .mayUseInputMethod(mWindowAttributes.flags); 3466 3467 InputMethodManager imm = InputMethodManager.peekInstance(); 3468 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3469 imm.onPreWindowFocus(mView, hasWindowFocus); 3470 } 3471 if (mView != null) { 3472 mAttachInfo.mKeyDispatchState.reset(); 3473 mView.dispatchWindowFocusChanged(hasWindowFocus); 3474 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3475 } 3476 3477 // Note: must be done after the focus change callbacks, 3478 // so all of the view state is set up correctly. 3479 if (hasWindowFocus) { 3480 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3481 imm.onPostWindowFocus(mView, mView.findFocus(), 3482 mWindowAttributes.softInputMode, 3483 !mHasHadWindowFocus, mWindowAttributes.flags); 3484 } 3485 // Clear the forward bit. We can just do this directly, since 3486 // the window manager doesn't care about it. 3487 mWindowAttributes.softInputMode &= 3488 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3489 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3490 .softInputMode &= 3491 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3492 mHasHadWindowFocus = true; 3493 } else if (mCapturingView != null) { 3494 releasePointerCapture(mCapturingView); 3495 } 3496 } 3497 } break; 3498 case MSG_DIE: 3499 doDie(); 3500 break; 3501 case MSG_DISPATCH_INPUT_EVENT: { 3502 SomeArgs args = (SomeArgs)msg.obj; 3503 InputEvent event = (InputEvent)args.arg1; 3504 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3505 enqueueInputEvent(event, receiver, 0, true); 3506 args.recycle(); 3507 } break; 3508 case MSG_SYNTHESIZE_INPUT_EVENT: { 3509 InputEvent event = (InputEvent)msg.obj; 3510 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3511 } break; 3512 case MSG_DISPATCH_KEY_FROM_IME: { 3513 if (LOCAL_LOGV) Log.v( 3514 TAG, "Dispatching key " 3515 + msg.obj + " from IME to " + mView); 3516 KeyEvent event = (KeyEvent)msg.obj; 3517 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3518 // The IME is trying to say this event is from the 3519 // system! Bad bad bad! 3520 //noinspection UnusedAssignment 3521 event = KeyEvent.changeFlags(event, event.getFlags() & 3522 ~KeyEvent.FLAG_FROM_SYSTEM); 3523 } 3524 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3525 } break; 3526 case MSG_FINISH_INPUT_CONNECTION: { 3527 InputMethodManager imm = InputMethodManager.peekInstance(); 3528 if (imm != null) { 3529 imm.reportFinishInputConnection((InputConnection)msg.obj); 3530 } 3531 } break; 3532 case MSG_CHECK_FOCUS: { 3533 InputMethodManager imm = InputMethodManager.peekInstance(); 3534 if (imm != null) { 3535 imm.checkFocus(); 3536 } 3537 } break; 3538 case MSG_CLOSE_SYSTEM_DIALOGS: { 3539 if (mView != null) { 3540 mView.onCloseSystemDialogs((String)msg.obj); 3541 } 3542 } break; 3543 case MSG_DISPATCH_DRAG_EVENT: 3544 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3545 DragEvent event = (DragEvent)msg.obj; 3546 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3547 handleDragEvent(event); 3548 } break; 3549 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3550 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3551 } break; 3552 case MSG_UPDATE_CONFIGURATION: { 3553 Configuration config = (Configuration)msg.obj; 3554 if (config.isOtherSeqNewer(mLastConfiguration)) { 3555 config = mLastConfiguration; 3556 } 3557 updateConfiguration(config, false); 3558 } break; 3559 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3560 setAccessibilityFocus(null, null); 3561 } break; 3562 case MSG_INVALIDATE_WORLD: { 3563 if (mView != null) { 3564 invalidateWorld(mView); 3565 } 3566 } break; 3567 case MSG_DISPATCH_WINDOW_SHOWN: { 3568 handleDispatchWindowShown(); 3569 } break; 3570 case MSG_REQUEST_KEYBOARD_SHORTCUTS: { 3571 IResultReceiver receiver = (IResultReceiver) msg.obj; 3572 handleRequestKeyboardShortcuts(receiver); 3573 } break; 3574 case MSG_UPDATE_POINTER_ICON: { 3575 MotionEvent event = (MotionEvent) msg.obj; 3576 resetPointerIcon(event); 3577 } break; 3578 } 3579 } 3580 } 3581 3582 final ViewRootHandler mHandler = new ViewRootHandler(); 3583 3584 /** 3585 * Something in the current window tells us we need to change the touch mode. For 3586 * example, we are not in touch mode, and the user touches the screen. 3587 * 3588 * If the touch mode has changed, tell the window manager, and handle it locally. 3589 * 3590 * @param inTouchMode Whether we want to be in touch mode. 3591 * @return True if the touch mode changed and focus changed was changed as a result 3592 */ 3593 boolean ensureTouchMode(boolean inTouchMode) { 3594 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3595 + "touch mode is " + mAttachInfo.mInTouchMode); 3596 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3597 3598 // tell the window manager 3599 try { 3600 mWindowSession.setInTouchMode(inTouchMode); 3601 } catch (RemoteException e) { 3602 throw new RuntimeException(e); 3603 } 3604 3605 // handle the change 3606 return ensureTouchModeLocally(inTouchMode); 3607 } 3608 3609 /** 3610 * Ensure that the touch mode for this window is set, and if it is changing, 3611 * take the appropriate action. 3612 * @param inTouchMode Whether we want to be in touch mode. 3613 * @return True if the touch mode changed and focus changed was changed as a result 3614 */ 3615 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3616 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3617 + "touch mode is " + mAttachInfo.mInTouchMode); 3618 3619 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3620 3621 mAttachInfo.mInTouchMode = inTouchMode; 3622 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3623 3624 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3625 } 3626 3627 private boolean enterTouchMode() { 3628 if (mView != null && mView.hasFocus()) { 3629 // note: not relying on mFocusedView here because this could 3630 // be when the window is first being added, and mFocused isn't 3631 // set yet. 3632 final View focused = mView.findFocus(); 3633 if (focused != null && !focused.isFocusableInTouchMode()) { 3634 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3635 if (ancestorToTakeFocus != null) { 3636 // there is an ancestor that wants focus after its 3637 // descendants that is focusable in touch mode.. give it 3638 // focus 3639 return ancestorToTakeFocus.requestFocus(); 3640 } else { 3641 // There's nothing to focus. Clear and propagate through the 3642 // hierarchy, but don't attempt to place new focus. 3643 focused.clearFocusInternal(null, true, false); 3644 return true; 3645 } 3646 } 3647 } 3648 return false; 3649 } 3650 3651 /** 3652 * Find an ancestor of focused that wants focus after its descendants and is 3653 * focusable in touch mode. 3654 * @param focused The currently focused view. 3655 * @return An appropriate view, or null if no such view exists. 3656 */ 3657 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3658 ViewParent parent = focused.getParent(); 3659 while (parent instanceof ViewGroup) { 3660 final ViewGroup vgParent = (ViewGroup) parent; 3661 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3662 && vgParent.isFocusableInTouchMode()) { 3663 return vgParent; 3664 } 3665 if (vgParent.isRootNamespace()) { 3666 return null; 3667 } else { 3668 parent = vgParent.getParent(); 3669 } 3670 } 3671 return null; 3672 } 3673 3674 private boolean leaveTouchMode() { 3675 if (mView != null) { 3676 if (mView.hasFocus()) { 3677 View focusedView = mView.findFocus(); 3678 if (!(focusedView instanceof ViewGroup)) { 3679 // some view has focus, let it keep it 3680 return false; 3681 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3682 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3683 // some view group has focus, and doesn't prefer its children 3684 // over itself for focus, so let them keep it. 3685 return false; 3686 } 3687 } 3688 3689 // find the best view to give focus to in this brave new non-touch-mode 3690 // world 3691 final View focused = focusSearch(null, View.FOCUS_DOWN); 3692 if (focused != null) { 3693 return focused.requestFocus(View.FOCUS_DOWN); 3694 } 3695 } 3696 return false; 3697 } 3698 3699 /** 3700 * Base class for implementing a stage in the chain of responsibility 3701 * for processing input events. 3702 * <p> 3703 * Events are delivered to the stage by the {@link #deliver} method. The stage 3704 * then has the choice of finishing the event or forwarding it to the next stage. 3705 * </p> 3706 */ 3707 abstract class InputStage { 3708 private final InputStage mNext; 3709 3710 protected static final int FORWARD = 0; 3711 protected static final int FINISH_HANDLED = 1; 3712 protected static final int FINISH_NOT_HANDLED = 2; 3713 3714 /** 3715 * Creates an input stage. 3716 * @param next The next stage to which events should be forwarded. 3717 */ 3718 public InputStage(InputStage next) { 3719 mNext = next; 3720 } 3721 3722 /** 3723 * Delivers an event to be processed. 3724 */ 3725 public final void deliver(QueuedInputEvent q) { 3726 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3727 forward(q); 3728 } else if (shouldDropInputEvent(q)) { 3729 finish(q, false); 3730 } else { 3731 apply(q, onProcess(q)); 3732 } 3733 } 3734 3735 /** 3736 * Marks the the input event as finished then forwards it to the next stage. 3737 */ 3738 protected void finish(QueuedInputEvent q, boolean handled) { 3739 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3740 if (handled) { 3741 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3742 } 3743 forward(q); 3744 } 3745 3746 /** 3747 * Forwards the event to the next stage. 3748 */ 3749 protected void forward(QueuedInputEvent q) { 3750 onDeliverToNext(q); 3751 } 3752 3753 /** 3754 * Applies a result code from {@link #onProcess} to the specified event. 3755 */ 3756 protected void apply(QueuedInputEvent q, int result) { 3757 if (result == FORWARD) { 3758 forward(q); 3759 } else if (result == FINISH_HANDLED) { 3760 finish(q, true); 3761 } else if (result == FINISH_NOT_HANDLED) { 3762 finish(q, false); 3763 } else { 3764 throw new IllegalArgumentException("Invalid result: " + result); 3765 } 3766 } 3767 3768 /** 3769 * Called when an event is ready to be processed. 3770 * @return A result code indicating how the event was handled. 3771 */ 3772 protected int onProcess(QueuedInputEvent q) { 3773 return FORWARD; 3774 } 3775 3776 /** 3777 * Called when an event is being delivered to the next stage. 3778 */ 3779 protected void onDeliverToNext(QueuedInputEvent q) { 3780 if (DEBUG_INPUT_STAGES) { 3781 Log.v(mTag, "Done with " + getClass().getSimpleName() + ". " + q); 3782 } 3783 if (mNext != null) { 3784 mNext.deliver(q); 3785 } else { 3786 finishInputEvent(q); 3787 } 3788 } 3789 3790 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3791 if (mView == null || !mAdded) { 3792 Slog.w(mTag, "Dropping event due to root view being removed: " + q.mEvent); 3793 return true; 3794 } else if ((!mAttachInfo.mHasWindowFocus 3795 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) || mStopped 3796 || mIsAmbientMode || (mPausedForTransition && !isBack(q.mEvent))) { 3797 // This is a focus event and the window doesn't currently have input focus or 3798 // has stopped. This could be an event that came back from the previous stage 3799 // but the window has lost focus or stopped in the meantime. 3800 if (isTerminalInputEvent(q.mEvent)) { 3801 // Don't drop terminal input events, however mark them as canceled. 3802 q.mEvent.cancel(); 3803 Slog.w(mTag, "Cancelling event due to no window focus: " + q.mEvent); 3804 return false; 3805 } 3806 3807 // Drop non-terminal input events. 3808 Slog.w(mTag, "Dropping event due to no window focus: " + q.mEvent); 3809 return true; 3810 } 3811 return false; 3812 } 3813 3814 void dump(String prefix, PrintWriter writer) { 3815 if (mNext != null) { 3816 mNext.dump(prefix, writer); 3817 } 3818 } 3819 3820 private boolean isBack(InputEvent event) { 3821 if (event instanceof KeyEvent) { 3822 return ((KeyEvent) event).getKeyCode() == KeyEvent.KEYCODE_BACK; 3823 } else { 3824 return false; 3825 } 3826 } 3827 } 3828 3829 /** 3830 * Base class for implementing an input pipeline stage that supports 3831 * asynchronous and out-of-order processing of input events. 3832 * <p> 3833 * In addition to what a normal input stage can do, an asynchronous 3834 * input stage may also defer an input event that has been delivered to it 3835 * and finish or forward it later. 3836 * </p> 3837 */ 3838 abstract class AsyncInputStage extends InputStage { 3839 private final String mTraceCounter; 3840 3841 private QueuedInputEvent mQueueHead; 3842 private QueuedInputEvent mQueueTail; 3843 private int mQueueLength; 3844 3845 protected static final int DEFER = 3; 3846 3847 /** 3848 * Creates an asynchronous input stage. 3849 * @param next The next stage to which events should be forwarded. 3850 * @param traceCounter The name of a counter to record the size of 3851 * the queue of pending events. 3852 */ 3853 public AsyncInputStage(InputStage next, String traceCounter) { 3854 super(next); 3855 mTraceCounter = traceCounter; 3856 } 3857 3858 /** 3859 * Marks the event as deferred, which is to say that it will be handled 3860 * asynchronously. The caller is responsible for calling {@link #forward} 3861 * or {@link #finish} later when it is done handling the event. 3862 */ 3863 protected void defer(QueuedInputEvent q) { 3864 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3865 enqueue(q); 3866 } 3867 3868 @Override 3869 protected void forward(QueuedInputEvent q) { 3870 // Clear the deferred flag. 3871 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3872 3873 // Fast path if the queue is empty. 3874 QueuedInputEvent curr = mQueueHead; 3875 if (curr == null) { 3876 super.forward(q); 3877 return; 3878 } 3879 3880 // Determine whether the event must be serialized behind any others 3881 // before it can be delivered to the next stage. This is done because 3882 // deferred events might be handled out of order by the stage. 3883 final int deviceId = q.mEvent.getDeviceId(); 3884 QueuedInputEvent prev = null; 3885 boolean blocked = false; 3886 while (curr != null && curr != q) { 3887 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3888 blocked = true; 3889 } 3890 prev = curr; 3891 curr = curr.mNext; 3892 } 3893 3894 // If the event is blocked, then leave it in the queue to be delivered later. 3895 // Note that the event might not yet be in the queue if it was not previously 3896 // deferred so we will enqueue it if needed. 3897 if (blocked) { 3898 if (curr == null) { 3899 enqueue(q); 3900 } 3901 return; 3902 } 3903 3904 // The event is not blocked. Deliver it immediately. 3905 if (curr != null) { 3906 curr = curr.mNext; 3907 dequeue(q, prev); 3908 } 3909 super.forward(q); 3910 3911 // Dequeuing this event may have unblocked successors. Deliver them. 3912 while (curr != null) { 3913 if (deviceId == curr.mEvent.getDeviceId()) { 3914 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3915 break; 3916 } 3917 QueuedInputEvent next = curr.mNext; 3918 dequeue(curr, prev); 3919 super.forward(curr); 3920 curr = next; 3921 } else { 3922 prev = curr; 3923 curr = curr.mNext; 3924 } 3925 } 3926 } 3927 3928 @Override 3929 protected void apply(QueuedInputEvent q, int result) { 3930 if (result == DEFER) { 3931 defer(q); 3932 } else { 3933 super.apply(q, result); 3934 } 3935 } 3936 3937 private void enqueue(QueuedInputEvent q) { 3938 if (mQueueTail == null) { 3939 mQueueHead = q; 3940 mQueueTail = q; 3941 } else { 3942 mQueueTail.mNext = q; 3943 mQueueTail = q; 3944 } 3945 3946 mQueueLength += 1; 3947 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3948 } 3949 3950 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3951 if (prev == null) { 3952 mQueueHead = q.mNext; 3953 } else { 3954 prev.mNext = q.mNext; 3955 } 3956 if (mQueueTail == q) { 3957 mQueueTail = prev; 3958 } 3959 q.mNext = null; 3960 3961 mQueueLength -= 1; 3962 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3963 } 3964 3965 @Override 3966 void dump(String prefix, PrintWriter writer) { 3967 writer.print(prefix); 3968 writer.print(getClass().getName()); 3969 writer.print(": mQueueLength="); 3970 writer.println(mQueueLength); 3971 3972 super.dump(prefix, writer); 3973 } 3974 } 3975 3976 /** 3977 * Delivers pre-ime input events to a native activity. 3978 * Does not support pointer events. 3979 */ 3980 final class NativePreImeInputStage extends AsyncInputStage 3981 implements InputQueue.FinishedInputEventCallback { 3982 public NativePreImeInputStage(InputStage next, String traceCounter) { 3983 super(next, traceCounter); 3984 } 3985 3986 @Override 3987 protected int onProcess(QueuedInputEvent q) { 3988 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3989 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3990 return DEFER; 3991 } 3992 return FORWARD; 3993 } 3994 3995 @Override 3996 public void onFinishedInputEvent(Object token, boolean handled) { 3997 QueuedInputEvent q = (QueuedInputEvent)token; 3998 if (handled) { 3999 finish(q, true); 4000 return; 4001 } 4002 forward(q); 4003 } 4004 } 4005 4006 /** 4007 * Delivers pre-ime input events to the view hierarchy. 4008 * Does not support pointer events. 4009 */ 4010 final class ViewPreImeInputStage extends InputStage { 4011 public ViewPreImeInputStage(InputStage next) { 4012 super(next); 4013 } 4014 4015 @Override 4016 protected int onProcess(QueuedInputEvent q) { 4017 if (q.mEvent instanceof KeyEvent) { 4018 return processKeyEvent(q); 4019 } 4020 return FORWARD; 4021 } 4022 4023 private int processKeyEvent(QueuedInputEvent q) { 4024 final KeyEvent event = (KeyEvent)q.mEvent; 4025 if (mView.dispatchKeyEventPreIme(event)) { 4026 return FINISH_HANDLED; 4027 } 4028 return FORWARD; 4029 } 4030 } 4031 4032 /** 4033 * Delivers input events to the ime. 4034 * Does not support pointer events. 4035 */ 4036 final class ImeInputStage extends AsyncInputStage 4037 implements InputMethodManager.FinishedInputEventCallback { 4038 public ImeInputStage(InputStage next, String traceCounter) { 4039 super(next, traceCounter); 4040 } 4041 4042 @Override 4043 protected int onProcess(QueuedInputEvent q) { 4044 if (mLastWasImTarget && !isInLocalFocusMode()) { 4045 InputMethodManager imm = InputMethodManager.peekInstance(); 4046 if (imm != null) { 4047 final InputEvent event = q.mEvent; 4048 if (DEBUG_IMF) Log.v(mTag, "Sending input event to IME: " + event); 4049 int result = imm.dispatchInputEvent(event, q, this, mHandler); 4050 if (result == InputMethodManager.DISPATCH_HANDLED) { 4051 return FINISH_HANDLED; 4052 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 4053 // The IME could not handle it, so skip along to the next InputStage 4054 return FORWARD; 4055 } else { 4056 return DEFER; // callback will be invoked later 4057 } 4058 } 4059 } 4060 return FORWARD; 4061 } 4062 4063 @Override 4064 public void onFinishedInputEvent(Object token, boolean handled) { 4065 QueuedInputEvent q = (QueuedInputEvent)token; 4066 if (handled) { 4067 finish(q, true); 4068 return; 4069 } 4070 forward(q); 4071 } 4072 } 4073 4074 /** 4075 * Performs early processing of post-ime input events. 4076 */ 4077 final class EarlyPostImeInputStage extends InputStage { 4078 public EarlyPostImeInputStage(InputStage next) { 4079 super(next); 4080 } 4081 4082 @Override 4083 protected int onProcess(QueuedInputEvent q) { 4084 if (q.mEvent instanceof KeyEvent) { 4085 return processKeyEvent(q); 4086 } else { 4087 final int source = q.mEvent.getSource(); 4088 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4089 return processPointerEvent(q); 4090 } 4091 } 4092 return FORWARD; 4093 } 4094 4095 private int processKeyEvent(QueuedInputEvent q) { 4096 final KeyEvent event = (KeyEvent)q.mEvent; 4097 4098 // If the key's purpose is to exit touch mode then we consume it 4099 // and consider it handled. 4100 if (checkForLeavingTouchModeAndConsume(event)) { 4101 return FINISH_HANDLED; 4102 } 4103 4104 // Make sure the fallback event policy sees all keys that will be 4105 // delivered to the view hierarchy. 4106 mFallbackEventHandler.preDispatchKeyEvent(event); 4107 return FORWARD; 4108 } 4109 4110 private int processPointerEvent(QueuedInputEvent q) { 4111 final MotionEvent event = (MotionEvent)q.mEvent; 4112 4113 // Translate the pointer event for compatibility, if needed. 4114 if (mTranslator != null) { 4115 mTranslator.translateEventInScreenToAppWindow(event); 4116 } 4117 4118 // Enter touch mode on down or scroll. 4119 final int action = event.getAction(); 4120 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 4121 ensureTouchMode(true); 4122 } 4123 4124 // Offset the scroll position. 4125 if (mCurScrollY != 0) { 4126 event.offsetLocation(0, mCurScrollY); 4127 } 4128 4129 // Remember the touch position for possible drag-initiation. 4130 if (event.isTouchEvent()) { 4131 mLastTouchPoint.x = event.getRawX(); 4132 mLastTouchPoint.y = event.getRawY(); 4133 mLastTouchSource = event.getSource(); 4134 } 4135 return FORWARD; 4136 } 4137 } 4138 4139 /** 4140 * Delivers post-ime input events to a native activity. 4141 */ 4142 final class NativePostImeInputStage extends AsyncInputStage 4143 implements InputQueue.FinishedInputEventCallback { 4144 public NativePostImeInputStage(InputStage next, String traceCounter) { 4145 super(next, traceCounter); 4146 } 4147 4148 @Override 4149 protected int onProcess(QueuedInputEvent q) { 4150 if (mInputQueue != null) { 4151 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 4152 return DEFER; 4153 } 4154 return FORWARD; 4155 } 4156 4157 @Override 4158 public void onFinishedInputEvent(Object token, boolean handled) { 4159 QueuedInputEvent q = (QueuedInputEvent)token; 4160 if (handled) { 4161 finish(q, true); 4162 return; 4163 } 4164 forward(q); 4165 } 4166 } 4167 4168 /** 4169 * Delivers post-ime input events to the view hierarchy. 4170 */ 4171 final class ViewPostImeInputStage extends InputStage { 4172 public ViewPostImeInputStage(InputStage next) { 4173 super(next); 4174 } 4175 4176 @Override 4177 protected int onProcess(QueuedInputEvent q) { 4178 if (q.mEvent instanceof KeyEvent) { 4179 return processKeyEvent(q); 4180 } else { 4181 final int source = q.mEvent.getSource(); 4182 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4183 return processPointerEvent(q); 4184 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4185 return processTrackballEvent(q); 4186 } else { 4187 return processGenericMotionEvent(q); 4188 } 4189 } 4190 } 4191 4192 @Override 4193 protected void onDeliverToNext(QueuedInputEvent q) { 4194 if (mUnbufferedInputDispatch 4195 && q.mEvent instanceof MotionEvent 4196 && ((MotionEvent)q.mEvent).isTouchEvent() 4197 && isTerminalInputEvent(q.mEvent)) { 4198 mUnbufferedInputDispatch = false; 4199 scheduleConsumeBatchedInput(); 4200 } 4201 super.onDeliverToNext(q); 4202 } 4203 4204 private int processKeyEvent(QueuedInputEvent q) { 4205 final KeyEvent event = (KeyEvent)q.mEvent; 4206 4207 // Deliver the key to the view hierarchy. 4208 if (mView.dispatchKeyEvent(event)) { 4209 return FINISH_HANDLED; 4210 } 4211 4212 if (shouldDropInputEvent(q)) { 4213 return FINISH_NOT_HANDLED; 4214 } 4215 4216 // If the Control modifier is held, try to interpret the key as a shortcut. 4217 if (event.getAction() == KeyEvent.ACTION_DOWN 4218 && event.isCtrlPressed() 4219 && event.getRepeatCount() == 0 4220 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4221 if (mView.dispatchKeyShortcutEvent(event)) { 4222 return FINISH_HANDLED; 4223 } 4224 if (shouldDropInputEvent(q)) { 4225 return FINISH_NOT_HANDLED; 4226 } 4227 } 4228 4229 // Apply the fallback event policy. 4230 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4231 return FINISH_HANDLED; 4232 } 4233 if (shouldDropInputEvent(q)) { 4234 return FINISH_NOT_HANDLED; 4235 } 4236 4237 // Handle automatic focus changes. 4238 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4239 int direction = 0; 4240 switch (event.getKeyCode()) { 4241 case KeyEvent.KEYCODE_DPAD_LEFT: 4242 if (event.hasNoModifiers()) { 4243 direction = View.FOCUS_LEFT; 4244 } 4245 break; 4246 case KeyEvent.KEYCODE_DPAD_RIGHT: 4247 if (event.hasNoModifiers()) { 4248 direction = View.FOCUS_RIGHT; 4249 } 4250 break; 4251 case KeyEvent.KEYCODE_DPAD_UP: 4252 if (event.hasNoModifiers()) { 4253 direction = View.FOCUS_UP; 4254 } 4255 break; 4256 case KeyEvent.KEYCODE_DPAD_DOWN: 4257 if (event.hasNoModifiers()) { 4258 direction = View.FOCUS_DOWN; 4259 } 4260 break; 4261 case KeyEvent.KEYCODE_TAB: 4262 if (event.hasNoModifiers()) { 4263 direction = View.FOCUS_FORWARD; 4264 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4265 direction = View.FOCUS_BACKWARD; 4266 } 4267 break; 4268 } 4269 if (direction != 0) { 4270 View focused = mView.findFocus(); 4271 if (focused != null) { 4272 View v = focused.focusSearch(direction); 4273 if (v != null && v != focused) { 4274 // do the math the get the interesting rect 4275 // of previous focused into the coord system of 4276 // newly focused view 4277 focused.getFocusedRect(mTempRect); 4278 if (mView instanceof ViewGroup) { 4279 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4280 focused, mTempRect); 4281 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4282 v, mTempRect); 4283 } 4284 if (v.requestFocus(direction, mTempRect)) { 4285 playSoundEffect(SoundEffectConstants 4286 .getContantForFocusDirection(direction)); 4287 return FINISH_HANDLED; 4288 } 4289 } 4290 4291 // Give the focused view a last chance to handle the dpad key. 4292 if (mView.dispatchUnhandledMove(focused, direction)) { 4293 return FINISH_HANDLED; 4294 } 4295 } else { 4296 // find the best view to give focus to in this non-touch-mode with no-focus 4297 View v = focusSearch(null, direction); 4298 if (v != null && v.requestFocus(direction)) { 4299 return FINISH_HANDLED; 4300 } 4301 } 4302 } 4303 } 4304 return FORWARD; 4305 } 4306 4307 private int processPointerEvent(QueuedInputEvent q) { 4308 final MotionEvent event = (MotionEvent)q.mEvent; 4309 4310 if (event.getPointerCount() == 1 4311 && event.isFromSource(InputDevice.SOURCE_MOUSE)) { 4312 if (event.getActionMasked() == MotionEvent.ACTION_HOVER_ENTER 4313 || event.getActionMasked() == MotionEvent.ACTION_HOVER_EXIT) { 4314 // Other apps or the window manager may change the icon shape outside of 4315 // this app, therefore the icon shape has to be reset on enter/exit event. 4316 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4317 } 4318 4319 if (event.getActionMasked() != MotionEvent.ACTION_HOVER_EXIT) { 4320 if (!updatePointerIcon(event) && 4321 event.getActionMasked() == MotionEvent.ACTION_HOVER_MOVE) { 4322 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4323 } 4324 } 4325 } 4326 4327 mAttachInfo.mUnbufferedDispatchRequested = false; 4328 final View eventTarget = 4329 (event.isFromSource(InputDevice.SOURCE_MOUSE) && mCapturingView != null) ? 4330 mCapturingView : mView; 4331 boolean handled = eventTarget.dispatchPointerEvent(event); 4332 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4333 mUnbufferedInputDispatch = true; 4334 if (mConsumeBatchedInputScheduled) { 4335 scheduleConsumeBatchedInputImmediately(); 4336 } 4337 } 4338 return handled ? FINISH_HANDLED : FORWARD; 4339 } 4340 4341 private int processTrackballEvent(QueuedInputEvent q) { 4342 final MotionEvent event = (MotionEvent)q.mEvent; 4343 4344 if (mView.dispatchTrackballEvent(event)) { 4345 return FINISH_HANDLED; 4346 } 4347 return FORWARD; 4348 } 4349 4350 private int processGenericMotionEvent(QueuedInputEvent q) { 4351 final MotionEvent event = (MotionEvent)q.mEvent; 4352 4353 // Deliver the event to the view. 4354 if (mView.dispatchGenericMotionEvent(event)) { 4355 return FINISH_HANDLED; 4356 } 4357 return FORWARD; 4358 } 4359 } 4360 4361 private void resetPointerIcon(MotionEvent event) { 4362 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4363 updatePointerIcon(event); 4364 } 4365 4366 private boolean updatePointerIcon(MotionEvent event) { 4367 final float x = event.getX(); 4368 final float y = event.getY(); 4369 if (x < 0 || x >= mView.getWidth() || y < 0 || y >= mView.getHeight()) { 4370 Slog.e(mTag, "updatePointerIcon called with position out of bounds"); 4371 return false; 4372 } 4373 final PointerIcon pointerIcon = mView.getPointerIcon(event, x, y); 4374 final int pointerShape = (pointerIcon != null) ? 4375 pointerIcon.getStyle() : PointerIcon.STYLE_DEFAULT; 4376 4377 if (mPointerIconShape != pointerShape) { 4378 mPointerIconShape = pointerShape; 4379 if (mPointerIconShape != PointerIcon.STYLE_CUSTOM) { 4380 mCustomPointerIcon = null; 4381 InputManager.getInstance().setPointerIconShape(pointerShape); 4382 return true; 4383 } 4384 } 4385 if (mPointerIconShape == PointerIcon.STYLE_CUSTOM && 4386 !pointerIcon.equals(mCustomPointerIcon)) { 4387 mCustomPointerIcon = pointerIcon; 4388 InputManager.getInstance().setCustomPointerIcon(mCustomPointerIcon); 4389 } 4390 return true; 4391 } 4392 4393 /** 4394 * Performs synthesis of new input events from unhandled input events. 4395 */ 4396 final class SyntheticInputStage extends InputStage { 4397 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4398 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4399 private final SyntheticTouchNavigationHandler mTouchNavigation = 4400 new SyntheticTouchNavigationHandler(); 4401 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4402 4403 public SyntheticInputStage() { 4404 super(null); 4405 } 4406 4407 @Override 4408 protected int onProcess(QueuedInputEvent q) { 4409 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4410 if (q.mEvent instanceof MotionEvent) { 4411 final MotionEvent event = (MotionEvent)q.mEvent; 4412 final int source = event.getSource(); 4413 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4414 mTrackball.process(event); 4415 return FINISH_HANDLED; 4416 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4417 mJoystick.process(event); 4418 return FINISH_HANDLED; 4419 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4420 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4421 mTouchNavigation.process(event); 4422 return FINISH_HANDLED; 4423 } 4424 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4425 mKeyboard.process((KeyEvent)q.mEvent); 4426 return FINISH_HANDLED; 4427 } 4428 4429 return FORWARD; 4430 } 4431 4432 @Override 4433 protected void onDeliverToNext(QueuedInputEvent q) { 4434 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4435 // Cancel related synthetic events if any prior stage has handled the event. 4436 if (q.mEvent instanceof MotionEvent) { 4437 final MotionEvent event = (MotionEvent)q.mEvent; 4438 final int source = event.getSource(); 4439 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4440 mTrackball.cancel(event); 4441 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4442 mJoystick.cancel(event); 4443 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4444 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4445 mTouchNavigation.cancel(event); 4446 } 4447 } 4448 } 4449 super.onDeliverToNext(q); 4450 } 4451 } 4452 4453 /** 4454 * Creates dpad events from unhandled trackball movements. 4455 */ 4456 final class SyntheticTrackballHandler { 4457 private final TrackballAxis mX = new TrackballAxis(); 4458 private final TrackballAxis mY = new TrackballAxis(); 4459 private long mLastTime; 4460 4461 public void process(MotionEvent event) { 4462 // Translate the trackball event into DPAD keys and try to deliver those. 4463 long curTime = SystemClock.uptimeMillis(); 4464 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4465 // It has been too long since the last movement, 4466 // so restart at the beginning. 4467 mX.reset(0); 4468 mY.reset(0); 4469 mLastTime = curTime; 4470 } 4471 4472 final int action = event.getAction(); 4473 final int metaState = event.getMetaState(); 4474 switch (action) { 4475 case MotionEvent.ACTION_DOWN: 4476 mX.reset(2); 4477 mY.reset(2); 4478 enqueueInputEvent(new KeyEvent(curTime, curTime, 4479 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4480 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4481 InputDevice.SOURCE_KEYBOARD)); 4482 break; 4483 case MotionEvent.ACTION_UP: 4484 mX.reset(2); 4485 mY.reset(2); 4486 enqueueInputEvent(new KeyEvent(curTime, curTime, 4487 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4488 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4489 InputDevice.SOURCE_KEYBOARD)); 4490 break; 4491 } 4492 4493 if (DEBUG_TRACKBALL) Log.v(mTag, "TB X=" + mX.position + " step=" 4494 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4495 + " move=" + event.getX() 4496 + " / Y=" + mY.position + " step=" 4497 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4498 + " move=" + event.getY()); 4499 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4500 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4501 4502 // Generate DPAD events based on the trackball movement. 4503 // We pick the axis that has moved the most as the direction of 4504 // the DPAD. When we generate DPAD events for one axis, then the 4505 // other axis is reset -- we don't want to perform DPAD jumps due 4506 // to slight movements in the trackball when making major movements 4507 // along the other axis. 4508 int keycode = 0; 4509 int movement = 0; 4510 float accel = 1; 4511 if (xOff > yOff) { 4512 movement = mX.generate(); 4513 if (movement != 0) { 4514 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4515 : KeyEvent.KEYCODE_DPAD_LEFT; 4516 accel = mX.acceleration; 4517 mY.reset(2); 4518 } 4519 } else if (yOff > 0) { 4520 movement = mY.generate(); 4521 if (movement != 0) { 4522 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4523 : KeyEvent.KEYCODE_DPAD_UP; 4524 accel = mY.acceleration; 4525 mX.reset(2); 4526 } 4527 } 4528 4529 if (keycode != 0) { 4530 if (movement < 0) movement = -movement; 4531 int accelMovement = (int)(movement * accel); 4532 if (DEBUG_TRACKBALL) Log.v(mTag, "Move: movement=" + movement 4533 + " accelMovement=" + accelMovement 4534 + " accel=" + accel); 4535 if (accelMovement > movement) { 4536 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4537 + keycode); 4538 movement--; 4539 int repeatCount = accelMovement - movement; 4540 enqueueInputEvent(new KeyEvent(curTime, curTime, 4541 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4542 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4543 InputDevice.SOURCE_KEYBOARD)); 4544 } 4545 while (movement > 0) { 4546 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4547 + keycode); 4548 movement--; 4549 curTime = SystemClock.uptimeMillis(); 4550 enqueueInputEvent(new KeyEvent(curTime, curTime, 4551 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4552 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4553 InputDevice.SOURCE_KEYBOARD)); 4554 enqueueInputEvent(new KeyEvent(curTime, curTime, 4555 KeyEvent.ACTION_UP, keycode, 0, metaState, 4556 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4557 InputDevice.SOURCE_KEYBOARD)); 4558 } 4559 mLastTime = curTime; 4560 } 4561 } 4562 4563 public void cancel(MotionEvent event) { 4564 mLastTime = Integer.MIN_VALUE; 4565 4566 // If we reach this, we consumed a trackball event. 4567 // Because we will not translate the trackball event into a key event, 4568 // touch mode will not exit, so we exit touch mode here. 4569 if (mView != null && mAdded) { 4570 ensureTouchMode(false); 4571 } 4572 } 4573 } 4574 4575 /** 4576 * Maintains state information for a single trackball axis, generating 4577 * discrete (DPAD) movements based on raw trackball motion. 4578 */ 4579 static final class TrackballAxis { 4580 /** 4581 * The maximum amount of acceleration we will apply. 4582 */ 4583 static final float MAX_ACCELERATION = 20; 4584 4585 /** 4586 * The maximum amount of time (in milliseconds) between events in order 4587 * for us to consider the user to be doing fast trackball movements, 4588 * and thus apply an acceleration. 4589 */ 4590 static final long FAST_MOVE_TIME = 150; 4591 4592 /** 4593 * Scaling factor to the time (in milliseconds) between events to how 4594 * much to multiple/divide the current acceleration. When movement 4595 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4596 * FAST_MOVE_TIME it divides it. 4597 */ 4598 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4599 4600 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4601 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4602 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4603 4604 float position; 4605 float acceleration = 1; 4606 long lastMoveTime = 0; 4607 int step; 4608 int dir; 4609 int nonAccelMovement; 4610 4611 void reset(int _step) { 4612 position = 0; 4613 acceleration = 1; 4614 lastMoveTime = 0; 4615 step = _step; 4616 dir = 0; 4617 } 4618 4619 /** 4620 * Add trackball movement into the state. If the direction of movement 4621 * has been reversed, the state is reset before adding the 4622 * movement (so that you don't have to compensate for any previously 4623 * collected movement before see the result of the movement in the 4624 * new direction). 4625 * 4626 * @return Returns the absolute value of the amount of movement 4627 * collected so far. 4628 */ 4629 float collect(float off, long time, String axis) { 4630 long normTime; 4631 if (off > 0) { 4632 normTime = (long)(off * FAST_MOVE_TIME); 4633 if (dir < 0) { 4634 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4635 position = 0; 4636 step = 0; 4637 acceleration = 1; 4638 lastMoveTime = 0; 4639 } 4640 dir = 1; 4641 } else if (off < 0) { 4642 normTime = (long)((-off) * FAST_MOVE_TIME); 4643 if (dir > 0) { 4644 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4645 position = 0; 4646 step = 0; 4647 acceleration = 1; 4648 lastMoveTime = 0; 4649 } 4650 dir = -1; 4651 } else { 4652 normTime = 0; 4653 } 4654 4655 // The number of milliseconds between each movement that is 4656 // considered "normal" and will not result in any acceleration 4657 // or deceleration, scaled by the offset we have here. 4658 if (normTime > 0) { 4659 long delta = time - lastMoveTime; 4660 lastMoveTime = time; 4661 float acc = acceleration; 4662 if (delta < normTime) { 4663 // The user is scrolling rapidly, so increase acceleration. 4664 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4665 if (scale > 1) acc *= scale; 4666 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4667 + off + " normTime=" + normTime + " delta=" + delta 4668 + " scale=" + scale + " acc=" + acc); 4669 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4670 } else { 4671 // The user is scrolling slowly, so decrease acceleration. 4672 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4673 if (scale > 1) acc /= scale; 4674 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4675 + off + " normTime=" + normTime + " delta=" + delta 4676 + " scale=" + scale + " acc=" + acc); 4677 acceleration = acc > 1 ? acc : 1; 4678 } 4679 } 4680 position += off; 4681 return Math.abs(position); 4682 } 4683 4684 /** 4685 * Generate the number of discrete movement events appropriate for 4686 * the currently collected trackball movement. 4687 * 4688 * @return Returns the number of discrete movements, either positive 4689 * or negative, or 0 if there is not enough trackball movement yet 4690 * for a discrete movement. 4691 */ 4692 int generate() { 4693 int movement = 0; 4694 nonAccelMovement = 0; 4695 do { 4696 final int dir = position >= 0 ? 1 : -1; 4697 switch (step) { 4698 // If we are going to execute the first step, then we want 4699 // to do this as soon as possible instead of waiting for 4700 // a full movement, in order to make things look responsive. 4701 case 0: 4702 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4703 return movement; 4704 } 4705 movement += dir; 4706 nonAccelMovement += dir; 4707 step = 1; 4708 break; 4709 // If we have generated the first movement, then we need 4710 // to wait for the second complete trackball motion before 4711 // generating the second discrete movement. 4712 case 1: 4713 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4714 return movement; 4715 } 4716 movement += dir; 4717 nonAccelMovement += dir; 4718 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4719 step = 2; 4720 break; 4721 // After the first two, we generate discrete movements 4722 // consistently with the trackball, applying an acceleration 4723 // if the trackball is moving quickly. This is a simple 4724 // acceleration on top of what we already compute based 4725 // on how quickly the wheel is being turned, to apply 4726 // a longer increasing acceleration to continuous movement 4727 // in one direction. 4728 default: 4729 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4730 return movement; 4731 } 4732 movement += dir; 4733 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4734 float acc = acceleration; 4735 acc *= 1.1f; 4736 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4737 break; 4738 } 4739 } while (true); 4740 } 4741 } 4742 4743 /** 4744 * Creates dpad events from unhandled joystick movements. 4745 */ 4746 final class SyntheticJoystickHandler extends Handler { 4747 private final static String TAG = "SyntheticJoystickHandler"; 4748 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4749 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4750 4751 private int mLastXDirection; 4752 private int mLastYDirection; 4753 private int mLastXKeyCode; 4754 private int mLastYKeyCode; 4755 4756 public SyntheticJoystickHandler() { 4757 super(true); 4758 } 4759 4760 @Override 4761 public void handleMessage(Message msg) { 4762 switch (msg.what) { 4763 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4764 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4765 KeyEvent oldEvent = (KeyEvent)msg.obj; 4766 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4767 SystemClock.uptimeMillis(), 4768 oldEvent.getRepeatCount() + 1); 4769 if (mAttachInfo.mHasWindowFocus) { 4770 enqueueInputEvent(e); 4771 Message m = obtainMessage(msg.what, e); 4772 m.setAsynchronous(true); 4773 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4774 } 4775 } break; 4776 } 4777 } 4778 4779 public void process(MotionEvent event) { 4780 switch(event.getActionMasked()) { 4781 case MotionEvent.ACTION_CANCEL: 4782 cancel(event); 4783 break; 4784 case MotionEvent.ACTION_MOVE: 4785 update(event, true); 4786 break; 4787 default: 4788 Log.w(mTag, "Unexpected action: " + event.getActionMasked()); 4789 } 4790 } 4791 4792 private void cancel(MotionEvent event) { 4793 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4794 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4795 update(event, false); 4796 } 4797 4798 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4799 final long time = event.getEventTime(); 4800 final int metaState = event.getMetaState(); 4801 final int deviceId = event.getDeviceId(); 4802 final int source = event.getSource(); 4803 4804 int xDirection = joystickAxisValueToDirection( 4805 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4806 if (xDirection == 0) { 4807 xDirection = joystickAxisValueToDirection(event.getX()); 4808 } 4809 4810 int yDirection = joystickAxisValueToDirection( 4811 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4812 if (yDirection == 0) { 4813 yDirection = joystickAxisValueToDirection(event.getY()); 4814 } 4815 4816 if (xDirection != mLastXDirection) { 4817 if (mLastXKeyCode != 0) { 4818 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4819 enqueueInputEvent(new KeyEvent(time, time, 4820 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4821 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4822 mLastXKeyCode = 0; 4823 } 4824 4825 mLastXDirection = xDirection; 4826 4827 if (xDirection != 0 && synthesizeNewKeys) { 4828 mLastXKeyCode = xDirection > 0 4829 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4830 final KeyEvent e = new KeyEvent(time, time, 4831 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4832 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4833 enqueueInputEvent(e); 4834 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4835 m.setAsynchronous(true); 4836 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4837 } 4838 } 4839 4840 if (yDirection != mLastYDirection) { 4841 if (mLastYKeyCode != 0) { 4842 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4843 enqueueInputEvent(new KeyEvent(time, time, 4844 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4845 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4846 mLastYKeyCode = 0; 4847 } 4848 4849 mLastYDirection = yDirection; 4850 4851 if (yDirection != 0 && synthesizeNewKeys) { 4852 mLastYKeyCode = yDirection > 0 4853 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4854 final KeyEvent e = new KeyEvent(time, time, 4855 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4856 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4857 enqueueInputEvent(e); 4858 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4859 m.setAsynchronous(true); 4860 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4861 } 4862 } 4863 } 4864 4865 private int joystickAxisValueToDirection(float value) { 4866 if (value >= 0.5f) { 4867 return 1; 4868 } else if (value <= -0.5f) { 4869 return -1; 4870 } else { 4871 return 0; 4872 } 4873 } 4874 } 4875 4876 /** 4877 * Creates dpad events from unhandled touch navigation movements. 4878 */ 4879 final class SyntheticTouchNavigationHandler extends Handler { 4880 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4881 private static final boolean LOCAL_DEBUG = false; 4882 4883 // Assumed nominal width and height in millimeters of a touch navigation pad, 4884 // if no resolution information is available from the input system. 4885 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4886 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4887 4888 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4889 4890 // The nominal distance traveled to move by one unit. 4891 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4892 4893 // Minimum and maximum fling velocity in ticks per second. 4894 // The minimum velocity should be set such that we perform enough ticks per 4895 // second that the fling appears to be fluid. For example, if we set the minimum 4896 // to 2 ticks per second, then there may be up to half a second delay between the next 4897 // to last and last ticks which is noticeably discrete and jerky. This value should 4898 // probably not be set to anything less than about 4. 4899 // If fling accuracy is a problem then consider tuning the tick distance instead. 4900 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4901 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4902 4903 // Fling velocity decay factor applied after each new key is emitted. 4904 // This parameter controls the deceleration and overall duration of the fling. 4905 // The fling stops automatically when its velocity drops below the minimum 4906 // fling velocity defined above. 4907 private static final float FLING_TICK_DECAY = 0.8f; 4908 4909 /* The input device that we are tracking. */ 4910 4911 private int mCurrentDeviceId = -1; 4912 private int mCurrentSource; 4913 private boolean mCurrentDeviceSupported; 4914 4915 /* Configuration for the current input device. */ 4916 4917 // The scaled tick distance. A movement of this amount should generally translate 4918 // into a single dpad event in a given direction. 4919 private float mConfigTickDistance; 4920 4921 // The minimum and maximum scaled fling velocity. 4922 private float mConfigMinFlingVelocity; 4923 private float mConfigMaxFlingVelocity; 4924 4925 /* Tracking state. */ 4926 4927 // The velocity tracker for detecting flings. 4928 private VelocityTracker mVelocityTracker; 4929 4930 // The active pointer id, or -1 if none. 4931 private int mActivePointerId = -1; 4932 4933 // Location where tracking started. 4934 private float mStartX; 4935 private float mStartY; 4936 4937 // Most recently observed position. 4938 private float mLastX; 4939 private float mLastY; 4940 4941 // Accumulated movement delta since the last direction key was sent. 4942 private float mAccumulatedX; 4943 private float mAccumulatedY; 4944 4945 // Set to true if any movement was delivered to the app. 4946 // Implies that tap slop was exceeded. 4947 private boolean mConsumedMovement; 4948 4949 // The most recently sent key down event. 4950 // The keycode remains set until the direction changes or a fling ends 4951 // so that repeated key events may be generated as required. 4952 private long mPendingKeyDownTime; 4953 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4954 private int mPendingKeyRepeatCount; 4955 private int mPendingKeyMetaState; 4956 4957 // The current fling velocity while a fling is in progress. 4958 private boolean mFlinging; 4959 private float mFlingVelocity; 4960 4961 public SyntheticTouchNavigationHandler() { 4962 super(true); 4963 } 4964 4965 public void process(MotionEvent event) { 4966 // Update the current device information. 4967 final long time = event.getEventTime(); 4968 final int deviceId = event.getDeviceId(); 4969 final int source = event.getSource(); 4970 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4971 finishKeys(time); 4972 finishTracking(time); 4973 mCurrentDeviceId = deviceId; 4974 mCurrentSource = source; 4975 mCurrentDeviceSupported = false; 4976 InputDevice device = event.getDevice(); 4977 if (device != null) { 4978 // In order to support an input device, we must know certain 4979 // characteristics about it, such as its size and resolution. 4980 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4981 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4982 if (xRange != null && yRange != null) { 4983 mCurrentDeviceSupported = true; 4984 4985 // Infer the resolution if it not actually known. 4986 float xRes = xRange.getResolution(); 4987 if (xRes <= 0) { 4988 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4989 } 4990 float yRes = yRange.getResolution(); 4991 if (yRes <= 0) { 4992 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4993 } 4994 float nominalRes = (xRes + yRes) * 0.5f; 4995 4996 // Precompute all of the configuration thresholds we will need. 4997 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4998 mConfigMinFlingVelocity = 4999 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5000 mConfigMaxFlingVelocity = 5001 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5002 5003 if (LOCAL_DEBUG) { 5004 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 5005 + " (" + Integer.toHexString(mCurrentSource) + "): " 5006 + ", mConfigTickDistance=" + mConfigTickDistance 5007 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 5008 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 5009 } 5010 } 5011 } 5012 } 5013 if (!mCurrentDeviceSupported) { 5014 return; 5015 } 5016 5017 // Handle the event. 5018 final int action = event.getActionMasked(); 5019 switch (action) { 5020 case MotionEvent.ACTION_DOWN: { 5021 boolean caughtFling = mFlinging; 5022 finishKeys(time); 5023 finishTracking(time); 5024 mActivePointerId = event.getPointerId(0); 5025 mVelocityTracker = VelocityTracker.obtain(); 5026 mVelocityTracker.addMovement(event); 5027 mStartX = event.getX(); 5028 mStartY = event.getY(); 5029 mLastX = mStartX; 5030 mLastY = mStartY; 5031 mAccumulatedX = 0; 5032 mAccumulatedY = 0; 5033 5034 // If we caught a fling, then pretend that the tap slop has already 5035 // been exceeded to suppress taps whose only purpose is to stop the fling. 5036 mConsumedMovement = caughtFling; 5037 break; 5038 } 5039 5040 case MotionEvent.ACTION_MOVE: 5041 case MotionEvent.ACTION_UP: { 5042 if (mActivePointerId < 0) { 5043 break; 5044 } 5045 final int index = event.findPointerIndex(mActivePointerId); 5046 if (index < 0) { 5047 finishKeys(time); 5048 finishTracking(time); 5049 break; 5050 } 5051 5052 mVelocityTracker.addMovement(event); 5053 final float x = event.getX(index); 5054 final float y = event.getY(index); 5055 mAccumulatedX += x - mLastX; 5056 mAccumulatedY += y - mLastY; 5057 mLastX = x; 5058 mLastY = y; 5059 5060 // Consume any accumulated movement so far. 5061 final int metaState = event.getMetaState(); 5062 consumeAccumulatedMovement(time, metaState); 5063 5064 // Detect taps and flings. 5065 if (action == MotionEvent.ACTION_UP) { 5066 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5067 // It might be a fling. 5068 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 5069 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 5070 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 5071 if (!startFling(time, vx, vy)) { 5072 finishKeys(time); 5073 } 5074 } 5075 finishTracking(time); 5076 } 5077 break; 5078 } 5079 5080 case MotionEvent.ACTION_CANCEL: { 5081 finishKeys(time); 5082 finishTracking(time); 5083 break; 5084 } 5085 } 5086 } 5087 5088 public void cancel(MotionEvent event) { 5089 if (mCurrentDeviceId == event.getDeviceId() 5090 && mCurrentSource == event.getSource()) { 5091 final long time = event.getEventTime(); 5092 finishKeys(time); 5093 finishTracking(time); 5094 } 5095 } 5096 5097 private void finishKeys(long time) { 5098 cancelFling(); 5099 sendKeyUp(time); 5100 } 5101 5102 private void finishTracking(long time) { 5103 if (mActivePointerId >= 0) { 5104 mActivePointerId = -1; 5105 mVelocityTracker.recycle(); 5106 mVelocityTracker = null; 5107 } 5108 } 5109 5110 private void consumeAccumulatedMovement(long time, int metaState) { 5111 final float absX = Math.abs(mAccumulatedX); 5112 final float absY = Math.abs(mAccumulatedY); 5113 if (absX >= absY) { 5114 if (absX >= mConfigTickDistance) { 5115 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 5116 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 5117 mAccumulatedY = 0; 5118 mConsumedMovement = true; 5119 } 5120 } else { 5121 if (absY >= mConfigTickDistance) { 5122 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 5123 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 5124 mAccumulatedX = 0; 5125 mConsumedMovement = true; 5126 } 5127 } 5128 } 5129 5130 private float consumeAccumulatedMovement(long time, int metaState, 5131 float accumulator, int negativeKeyCode, int positiveKeyCode) { 5132 while (accumulator <= -mConfigTickDistance) { 5133 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 5134 accumulator += mConfigTickDistance; 5135 } 5136 while (accumulator >= mConfigTickDistance) { 5137 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 5138 accumulator -= mConfigTickDistance; 5139 } 5140 return accumulator; 5141 } 5142 5143 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 5144 if (mPendingKeyCode != keyCode) { 5145 sendKeyUp(time); 5146 mPendingKeyDownTime = time; 5147 mPendingKeyCode = keyCode; 5148 mPendingKeyRepeatCount = 0; 5149 } else { 5150 mPendingKeyRepeatCount += 1; 5151 } 5152 mPendingKeyMetaState = metaState; 5153 5154 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 5155 // but it doesn't quite make sense when simulating the events in this way. 5156 if (LOCAL_DEBUG) { 5157 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 5158 + ", repeatCount=" + mPendingKeyRepeatCount 5159 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5160 } 5161 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5162 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 5163 mPendingKeyMetaState, mCurrentDeviceId, 5164 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 5165 } 5166 5167 private void sendKeyUp(long time) { 5168 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5169 if (LOCAL_DEBUG) { 5170 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 5171 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5172 } 5173 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5174 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 5175 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 5176 mCurrentSource)); 5177 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5178 } 5179 } 5180 5181 private boolean startFling(long time, float vx, float vy) { 5182 if (LOCAL_DEBUG) { 5183 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 5184 + ", min=" + mConfigMinFlingVelocity); 5185 } 5186 5187 // Flings must be oriented in the same direction as the preceding movements. 5188 switch (mPendingKeyCode) { 5189 case KeyEvent.KEYCODE_DPAD_LEFT: 5190 if (-vx >= mConfigMinFlingVelocity 5191 && Math.abs(vy) < mConfigMinFlingVelocity) { 5192 mFlingVelocity = -vx; 5193 break; 5194 } 5195 return false; 5196 5197 case KeyEvent.KEYCODE_DPAD_RIGHT: 5198 if (vx >= mConfigMinFlingVelocity 5199 && Math.abs(vy) < mConfigMinFlingVelocity) { 5200 mFlingVelocity = vx; 5201 break; 5202 } 5203 return false; 5204 5205 case KeyEvent.KEYCODE_DPAD_UP: 5206 if (-vy >= mConfigMinFlingVelocity 5207 && Math.abs(vx) < mConfigMinFlingVelocity) { 5208 mFlingVelocity = -vy; 5209 break; 5210 } 5211 return false; 5212 5213 case KeyEvent.KEYCODE_DPAD_DOWN: 5214 if (vy >= mConfigMinFlingVelocity 5215 && Math.abs(vx) < mConfigMinFlingVelocity) { 5216 mFlingVelocity = vy; 5217 break; 5218 } 5219 return false; 5220 } 5221 5222 // Post the first fling event. 5223 mFlinging = postFling(time); 5224 return mFlinging; 5225 } 5226 5227 private boolean postFling(long time) { 5228 // The idea here is to estimate the time when the pointer would have 5229 // traveled one tick distance unit given the current fling velocity. 5230 // This effect creates continuity of motion. 5231 if (mFlingVelocity >= mConfigMinFlingVelocity) { 5232 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 5233 postAtTime(mFlingRunnable, time + delay); 5234 if (LOCAL_DEBUG) { 5235 Log.d(LOCAL_TAG, "Posted fling: velocity=" 5236 + mFlingVelocity + ", delay=" + delay 5237 + ", keyCode=" + mPendingKeyCode); 5238 } 5239 return true; 5240 } 5241 return false; 5242 } 5243 5244 private void cancelFling() { 5245 if (mFlinging) { 5246 removeCallbacks(mFlingRunnable); 5247 mFlinging = false; 5248 } 5249 } 5250 5251 private final Runnable mFlingRunnable = new Runnable() { 5252 @Override 5253 public void run() { 5254 final long time = SystemClock.uptimeMillis(); 5255 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5256 mFlingVelocity *= FLING_TICK_DECAY; 5257 if (!postFling(time)) { 5258 mFlinging = false; 5259 finishKeys(time); 5260 } 5261 } 5262 }; 5263 } 5264 5265 final class SyntheticKeyboardHandler { 5266 public void process(KeyEvent event) { 5267 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5268 return; 5269 } 5270 5271 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5272 final int keyCode = event.getKeyCode(); 5273 final int metaState = event.getMetaState(); 5274 5275 // Check for fallback actions specified by the key character map. 5276 KeyCharacterMap.FallbackAction fallbackAction = 5277 kcm.getFallbackAction(keyCode, metaState); 5278 if (fallbackAction != null) { 5279 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5280 KeyEvent fallbackEvent = KeyEvent.obtain( 5281 event.getDownTime(), event.getEventTime(), 5282 event.getAction(), fallbackAction.keyCode, 5283 event.getRepeatCount(), fallbackAction.metaState, 5284 event.getDeviceId(), event.getScanCode(), 5285 flags, event.getSource(), null); 5286 fallbackAction.recycle(); 5287 enqueueInputEvent(fallbackEvent); 5288 } 5289 } 5290 } 5291 5292 /** 5293 * Returns true if the key is used for keyboard navigation. 5294 * @param keyEvent The key event. 5295 * @return True if the key is used for keyboard navigation. 5296 */ 5297 private static boolean isNavigationKey(KeyEvent keyEvent) { 5298 switch (keyEvent.getKeyCode()) { 5299 case KeyEvent.KEYCODE_DPAD_LEFT: 5300 case KeyEvent.KEYCODE_DPAD_RIGHT: 5301 case KeyEvent.KEYCODE_DPAD_UP: 5302 case KeyEvent.KEYCODE_DPAD_DOWN: 5303 case KeyEvent.KEYCODE_DPAD_CENTER: 5304 case KeyEvent.KEYCODE_PAGE_UP: 5305 case KeyEvent.KEYCODE_PAGE_DOWN: 5306 case KeyEvent.KEYCODE_MOVE_HOME: 5307 case KeyEvent.KEYCODE_MOVE_END: 5308 case KeyEvent.KEYCODE_TAB: 5309 case KeyEvent.KEYCODE_SPACE: 5310 case KeyEvent.KEYCODE_ENTER: 5311 return true; 5312 } 5313 return false; 5314 } 5315 5316 /** 5317 * Returns true if the key is used for typing. 5318 * @param keyEvent The key event. 5319 * @return True if the key is used for typing. 5320 */ 5321 private static boolean isTypingKey(KeyEvent keyEvent) { 5322 return keyEvent.getUnicodeChar() > 0; 5323 } 5324 5325 /** 5326 * See if the key event means we should leave touch mode (and leave touch mode if so). 5327 * @param event The key event. 5328 * @return Whether this key event should be consumed (meaning the act of 5329 * leaving touch mode alone is considered the event). 5330 */ 5331 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5332 // Only relevant in touch mode. 5333 if (!mAttachInfo.mInTouchMode) { 5334 return false; 5335 } 5336 5337 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5338 final int action = event.getAction(); 5339 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5340 return false; 5341 } 5342 5343 // Don't leave touch mode if the IME told us not to. 5344 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5345 return false; 5346 } 5347 5348 // If the key can be used for keyboard navigation then leave touch mode 5349 // and select a focused view if needed (in ensureTouchMode). 5350 // When a new focused view is selected, we consume the navigation key because 5351 // navigation doesn't make much sense unless a view already has focus so 5352 // the key's purpose is to set focus. 5353 if (isNavigationKey(event)) { 5354 return ensureTouchMode(false); 5355 } 5356 5357 // If the key can be used for typing then leave touch mode 5358 // and select a focused view if needed (in ensureTouchMode). 5359 // Always allow the view to process the typing key. 5360 if (isTypingKey(event)) { 5361 ensureTouchMode(false); 5362 return false; 5363 } 5364 5365 return false; 5366 } 5367 5368 /* drag/drop */ 5369 void setLocalDragState(Object obj) { 5370 mLocalDragState = obj; 5371 } 5372 5373 private void handleDragEvent(DragEvent event) { 5374 // From the root, only drag start/end/location are dispatched. entered/exited 5375 // are determined and dispatched by the viewgroup hierarchy, who then report 5376 // that back here for ultimate reporting back to the framework. 5377 if (mView != null && mAdded) { 5378 final int what = event.mAction; 5379 5380 if (what == DragEvent.ACTION_DRAG_EXITED) { 5381 // A direct EXITED event means that the window manager knows we've just crossed 5382 // a window boundary, so the current drag target within this one must have 5383 // just been exited. Send it the usual notifications and then we're done 5384 // for now. 5385 mView.dispatchDragEvent(event); 5386 } else { 5387 // Cache the drag description when the operation starts, then fill it in 5388 // on subsequent calls as a convenience 5389 if (what == DragEvent.ACTION_DRAG_STARTED) { 5390 mCurrentDragView = null; // Start the current-recipient tracking 5391 mDragDescription = event.mClipDescription; 5392 } else { 5393 event.mClipDescription = mDragDescription; 5394 } 5395 5396 // For events with a [screen] location, translate into window coordinates 5397 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5398 mDragPoint.set(event.mX, event.mY); 5399 if (mTranslator != null) { 5400 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5401 } 5402 5403 if (mCurScrollY != 0) { 5404 mDragPoint.offset(0, mCurScrollY); 5405 } 5406 5407 event.mX = mDragPoint.x; 5408 event.mY = mDragPoint.y; 5409 } 5410 5411 // Remember who the current drag target is pre-dispatch 5412 final View prevDragView = mCurrentDragView; 5413 5414 // Now dispatch the drag/drop event 5415 boolean result = mView.dispatchDragEvent(event); 5416 5417 // If we changed apparent drag target, tell the OS about it 5418 if (prevDragView != mCurrentDragView) { 5419 try { 5420 if (prevDragView != null) { 5421 mWindowSession.dragRecipientExited(mWindow); 5422 } 5423 if (mCurrentDragView != null) { 5424 mWindowSession.dragRecipientEntered(mWindow); 5425 } 5426 } catch (RemoteException e) { 5427 Slog.e(mTag, "Unable to note drag target change"); 5428 } 5429 } 5430 5431 // Report the drop result when we're done 5432 if (what == DragEvent.ACTION_DROP) { 5433 mDragDescription = null; 5434 try { 5435 Log.i(mTag, "Reporting drop result: " + result); 5436 mWindowSession.reportDropResult(mWindow, result); 5437 } catch (RemoteException e) { 5438 Log.e(mTag, "Unable to report drop result"); 5439 } 5440 } 5441 5442 // When the drag operation ends, reset drag-related state 5443 if (what == DragEvent.ACTION_DRAG_ENDED) { 5444 setLocalDragState(null); 5445 mAttachInfo.mDragToken = null; 5446 if (mAttachInfo.mDragSurface != null) { 5447 mAttachInfo.mDragSurface.release(); 5448 mAttachInfo.mDragSurface = null; 5449 } 5450 } 5451 } 5452 } 5453 event.recycle(); 5454 } 5455 5456 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5457 if (mSeq != args.seq) { 5458 // The sequence has changed, so we need to update our value and make 5459 // sure to do a traversal afterward so the window manager is given our 5460 // most recent data. 5461 mSeq = args.seq; 5462 mAttachInfo.mForceReportNewAttributes = true; 5463 scheduleTraversals(); 5464 } 5465 if (mView == null) return; 5466 if (args.localChanges != 0) { 5467 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5468 } 5469 5470 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5471 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5472 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5473 mView.dispatchSystemUiVisibilityChanged(visibility); 5474 } 5475 } 5476 5477 public void handleDispatchWindowShown() { 5478 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5479 } 5480 5481 public void handleRequestKeyboardShortcuts(IResultReceiver receiver) { 5482 Bundle data = new Bundle(); 5483 ArrayList<KeyboardShortcutGroup> list = new ArrayList<>(); 5484 if (mView != null) { 5485 mView.requestKeyboardShortcuts(list); 5486 } 5487 data.putParcelableArrayList(WindowManager.PARCEL_KEY_SHORTCUTS_ARRAY, list); 5488 try { 5489 receiver.send(0, data); 5490 } catch (RemoteException e) { 5491 } 5492 } 5493 5494 public void getLastTouchPoint(Point outLocation) { 5495 outLocation.x = (int) mLastTouchPoint.x; 5496 outLocation.y = (int) mLastTouchPoint.y; 5497 } 5498 5499 public int getLastTouchSource() { 5500 return mLastTouchSource; 5501 } 5502 5503 public void setDragFocus(View newDragTarget) { 5504 if (mCurrentDragView != newDragTarget) { 5505 mCurrentDragView = newDragTarget; 5506 } 5507 } 5508 5509 private AudioManager getAudioManager() { 5510 if (mView == null) { 5511 throw new IllegalStateException("getAudioManager called when there is no mView"); 5512 } 5513 if (mAudioManager == null) { 5514 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5515 } 5516 return mAudioManager; 5517 } 5518 5519 public AccessibilityInteractionController getAccessibilityInteractionController() { 5520 if (mView == null) { 5521 throw new IllegalStateException("getAccessibilityInteractionController" 5522 + " called when there is no mView"); 5523 } 5524 if (mAccessibilityInteractionController == null) { 5525 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5526 } 5527 return mAccessibilityInteractionController; 5528 } 5529 5530 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5531 boolean insetsPending) throws RemoteException { 5532 5533 float appScale = mAttachInfo.mApplicationScale; 5534 boolean restore = false; 5535 if (params != null && mTranslator != null) { 5536 restore = true; 5537 params.backup(); 5538 mTranslator.translateWindowLayout(params); 5539 } 5540 if (params != null) { 5541 if (DBG) Log.d(mTag, "WindowLayout in layoutWindow:" + params); 5542 } 5543 mPendingConfiguration.seq = 0; 5544 //Log.d(mTag, ">>>>>> CALLING relayout"); 5545 if (params != null && mOrigWindowType != params.type) { 5546 // For compatibility with old apps, don't crash here. 5547 if (mTargetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5548 Slog.w(mTag, "Window type can not be changed after " 5549 + "the window is added; ignoring change of " + mView); 5550 params.type = mOrigWindowType; 5551 } 5552 } 5553 int relayoutResult = mWindowSession.relayout( 5554 mWindow, mSeq, params, 5555 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5556 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5557 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5558 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5559 mPendingStableInsets, mPendingOutsets, mPendingBackDropFrame, mPendingConfiguration, 5560 mSurface); 5561 //Log.d(mTag, "<<<<<< BACK FROM relayout"); 5562 if (restore) { 5563 params.restore(); 5564 } 5565 5566 if (mTranslator != null) { 5567 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5568 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5569 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5570 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5571 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5572 } 5573 return relayoutResult; 5574 } 5575 5576 /** 5577 * {@inheritDoc} 5578 */ 5579 @Override 5580 public void playSoundEffect(int effectId) { 5581 checkThread(); 5582 5583 try { 5584 final AudioManager audioManager = getAudioManager(); 5585 5586 switch (effectId) { 5587 case SoundEffectConstants.CLICK: 5588 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5589 return; 5590 case SoundEffectConstants.NAVIGATION_DOWN: 5591 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5592 return; 5593 case SoundEffectConstants.NAVIGATION_LEFT: 5594 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5595 return; 5596 case SoundEffectConstants.NAVIGATION_RIGHT: 5597 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5598 return; 5599 case SoundEffectConstants.NAVIGATION_UP: 5600 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5601 return; 5602 default: 5603 throw new IllegalArgumentException("unknown effect id " + effectId + 5604 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5605 } 5606 } catch (IllegalStateException e) { 5607 // Exception thrown by getAudioManager() when mView is null 5608 Log.e(mTag, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5609 e.printStackTrace(); 5610 } 5611 } 5612 5613 /** 5614 * {@inheritDoc} 5615 */ 5616 @Override 5617 public boolean performHapticFeedback(int effectId, boolean always) { 5618 try { 5619 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5620 } catch (RemoteException e) { 5621 return false; 5622 } 5623 } 5624 5625 /** 5626 * {@inheritDoc} 5627 */ 5628 @Override 5629 public View focusSearch(View focused, int direction) { 5630 checkThread(); 5631 if (!(mView instanceof ViewGroup)) { 5632 return null; 5633 } 5634 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5635 } 5636 5637 public void debug() { 5638 mView.debug(); 5639 } 5640 5641 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5642 String innerPrefix = prefix + " "; 5643 writer.print(prefix); writer.println("ViewRoot:"); 5644 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5645 writer.print(" mRemoved="); writer.println(mRemoved); 5646 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5647 writer.println(mConsumeBatchedInputScheduled); 5648 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5649 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5650 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5651 writer.println(mPendingInputEventCount); 5652 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5653 writer.println(mProcessInputEventsScheduled); 5654 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5655 writer.print(mTraversalScheduled); 5656 writer.print(innerPrefix); writer.print("mIsAmbientMode="); 5657 writer.print(mIsAmbientMode); 5658 if (mTraversalScheduled) { 5659 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5660 } else { 5661 writer.println(); 5662 } 5663 mFirstInputStage.dump(innerPrefix, writer); 5664 5665 mChoreographer.dump(prefix, writer); 5666 5667 writer.print(prefix); writer.println("View Hierarchy:"); 5668 dumpViewHierarchy(innerPrefix, writer, mView); 5669 } 5670 5671 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5672 writer.print(prefix); 5673 if (view == null) { 5674 writer.println("null"); 5675 return; 5676 } 5677 writer.println(view.toString()); 5678 if (!(view instanceof ViewGroup)) { 5679 return; 5680 } 5681 ViewGroup grp = (ViewGroup)view; 5682 final int N = grp.getChildCount(); 5683 if (N <= 0) { 5684 return; 5685 } 5686 prefix = prefix + " "; 5687 for (int i=0; i<N; i++) { 5688 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5689 } 5690 } 5691 5692 public void dumpGfxInfo(int[] info) { 5693 info[0] = info[1] = 0; 5694 if (mView != null) { 5695 getGfxInfo(mView, info); 5696 } 5697 } 5698 5699 private static void getGfxInfo(View view, int[] info) { 5700 RenderNode renderNode = view.mRenderNode; 5701 info[0]++; 5702 if (renderNode != null) { 5703 info[1] += renderNode.getDebugSize(); 5704 } 5705 5706 if (view instanceof ViewGroup) { 5707 ViewGroup group = (ViewGroup) view; 5708 5709 int count = group.getChildCount(); 5710 for (int i = 0; i < count; i++) { 5711 getGfxInfo(group.getChildAt(i), info); 5712 } 5713 } 5714 } 5715 5716 /** 5717 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5718 * @return True, request has been queued. False, request has been completed. 5719 */ 5720 boolean die(boolean immediate) { 5721 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5722 // done by dispatchDetachedFromWindow will cause havoc on return. 5723 if (immediate && !mIsInTraversal) { 5724 doDie(); 5725 return false; 5726 } 5727 5728 if (!mIsDrawing) { 5729 destroyHardwareRenderer(); 5730 } else { 5731 Log.e(mTag, "Attempting to destroy the window while drawing!\n" + 5732 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5733 } 5734 mHandler.sendEmptyMessage(MSG_DIE); 5735 return true; 5736 } 5737 5738 void doDie() { 5739 checkThread(); 5740 if (LOCAL_LOGV) Log.v(mTag, "DIE in " + this + " of " + mSurface); 5741 synchronized (this) { 5742 if (mRemoved) { 5743 return; 5744 } 5745 mRemoved = true; 5746 if (mAdded) { 5747 dispatchDetachedFromWindow(); 5748 } 5749 5750 if (mAdded && !mFirst) { 5751 destroyHardwareRenderer(); 5752 5753 if (mView != null) { 5754 int viewVisibility = mView.getVisibility(); 5755 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5756 if (mWindowAttributesChanged || viewVisibilityChanged) { 5757 // If layout params have been changed, first give them 5758 // to the window manager to make sure it has the correct 5759 // animation info. 5760 try { 5761 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5762 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5763 mWindowSession.finishDrawing(mWindow); 5764 } 5765 } catch (RemoteException e) { 5766 } 5767 } 5768 5769 mSurface.release(); 5770 } 5771 } 5772 5773 mAdded = false; 5774 } 5775 WindowManagerGlobal.getInstance().doRemoveView(this); 5776 } 5777 5778 public void requestUpdateConfiguration(Configuration config) { 5779 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5780 mHandler.sendMessage(msg); 5781 } 5782 5783 public void loadSystemProperties() { 5784 mHandler.post(new Runnable() { 5785 @Override 5786 public void run() { 5787 // Profiling 5788 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5789 profileRendering(mAttachInfo.mHasWindowFocus); 5790 5791 // Hardware rendering 5792 if (mAttachInfo.mHardwareRenderer != null) { 5793 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5794 invalidate(); 5795 } 5796 } 5797 5798 // Layout debugging 5799 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5800 if (layout != mAttachInfo.mDebugLayout) { 5801 mAttachInfo.mDebugLayout = layout; 5802 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5803 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5804 } 5805 } 5806 } 5807 }); 5808 } 5809 5810 private void destroyHardwareRenderer() { 5811 ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5812 5813 if (hardwareRenderer != null) { 5814 if (mView != null) { 5815 hardwareRenderer.destroyHardwareResources(mView); 5816 } 5817 hardwareRenderer.destroy(); 5818 hardwareRenderer.setRequested(false); 5819 5820 mAttachInfo.mHardwareRenderer = null; 5821 mAttachInfo.mHardwareAccelerated = false; 5822 } 5823 } 5824 5825 public void dispatchFinishInputConnection(InputConnection connection) { 5826 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5827 mHandler.sendMessage(msg); 5828 } 5829 5830 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5831 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 5832 Configuration newConfig, Rect backDropFrame) { 5833 if (DEBUG_LAYOUT) Log.v(mTag, "Resizing " + this + ": frame=" + frame.toShortString() 5834 + " contentInsets=" + contentInsets.toShortString() 5835 + " visibleInsets=" + visibleInsets.toShortString() 5836 + " reportDraw=" + reportDraw 5837 + " backDropFrame=" + backDropFrame); 5838 5839 // Tell all listeners that we are resizing the window so that the chrome can get 5840 // updated as fast as possible on a separate thread, 5841 if (mDragResizing) { 5842 synchronized (mWindowCallbacks) { 5843 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 5844 mWindowCallbacks.get(i).onWindowSizeIsChanging(backDropFrame); 5845 } 5846 } 5847 } 5848 5849 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5850 if (mTranslator != null) { 5851 mTranslator.translateRectInScreenToAppWindow(frame); 5852 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5853 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5854 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5855 } 5856 SomeArgs args = SomeArgs.obtain(); 5857 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5858 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5859 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5860 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5861 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5862 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5863 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5864 args.arg7 = sameProcessCall ? new Rect(outsets) : outsets; 5865 args.arg8 = sameProcessCall ? new Rect(backDropFrame) : backDropFrame; 5866 msg.obj = args; 5867 mHandler.sendMessage(msg); 5868 } 5869 5870 public void dispatchMoved(int newX, int newY) { 5871 if (DEBUG_LAYOUT) Log.v(mTag, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5872 if (mTranslator != null) { 5873 PointF point = new PointF(newX, newY); 5874 mTranslator.translatePointInScreenToAppWindow(point); 5875 newX = (int) (point.x + 0.5); 5876 newY = (int) (point.y + 0.5); 5877 } 5878 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5879 mHandler.sendMessage(msg); 5880 } 5881 5882 /** 5883 * Represents a pending input event that is waiting in a queue. 5884 * 5885 * Input events are processed in serial order by the timestamp specified by 5886 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5887 * one input event to the application at a time and waits for the application 5888 * to finish handling it before delivering the next one. 5889 * 5890 * However, because the application or IME can synthesize and inject multiple 5891 * key events at a time without going through the input dispatcher, we end up 5892 * needing a queue on the application's side. 5893 */ 5894 private static final class QueuedInputEvent { 5895 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5896 public static final int FLAG_DEFERRED = 1 << 1; 5897 public static final int FLAG_FINISHED = 1 << 2; 5898 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5899 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5900 public static final int FLAG_UNHANDLED = 1 << 5; 5901 5902 public QueuedInputEvent mNext; 5903 5904 public InputEvent mEvent; 5905 public InputEventReceiver mReceiver; 5906 public int mFlags; 5907 5908 public boolean shouldSkipIme() { 5909 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5910 return true; 5911 } 5912 return mEvent instanceof MotionEvent 5913 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5914 } 5915 5916 public boolean shouldSendToSynthesizer() { 5917 if ((mFlags & FLAG_UNHANDLED) != 0) { 5918 return true; 5919 } 5920 5921 return false; 5922 } 5923 5924 @Override 5925 public String toString() { 5926 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5927 boolean hasPrevious = false; 5928 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5929 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5930 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5931 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5932 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5933 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5934 if (!hasPrevious) { 5935 sb.append("0"); 5936 } 5937 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5938 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5939 sb.append(", mEvent=" + mEvent + "}"); 5940 return sb.toString(); 5941 } 5942 5943 private boolean flagToString(String name, int flag, 5944 boolean hasPrevious, StringBuilder sb) { 5945 if ((mFlags & flag) != 0) { 5946 if (hasPrevious) { 5947 sb.append("|"); 5948 } 5949 sb.append(name); 5950 return true; 5951 } 5952 return hasPrevious; 5953 } 5954 } 5955 5956 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5957 InputEventReceiver receiver, int flags) { 5958 QueuedInputEvent q = mQueuedInputEventPool; 5959 if (q != null) { 5960 mQueuedInputEventPoolSize -= 1; 5961 mQueuedInputEventPool = q.mNext; 5962 q.mNext = null; 5963 } else { 5964 q = new QueuedInputEvent(); 5965 } 5966 5967 q.mEvent = event; 5968 q.mReceiver = receiver; 5969 q.mFlags = flags; 5970 return q; 5971 } 5972 5973 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5974 q.mEvent = null; 5975 q.mReceiver = null; 5976 5977 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5978 mQueuedInputEventPoolSize += 1; 5979 q.mNext = mQueuedInputEventPool; 5980 mQueuedInputEventPool = q; 5981 } 5982 } 5983 5984 void enqueueInputEvent(InputEvent event) { 5985 enqueueInputEvent(event, null, 0, false); 5986 } 5987 5988 void enqueueInputEvent(InputEvent event, 5989 InputEventReceiver receiver, int flags, boolean processImmediately) { 5990 adjustInputEventForCompatibility(event); 5991 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5992 5993 // Always enqueue the input event in order, regardless of its time stamp. 5994 // We do this because the application or the IME may inject key events 5995 // in response to touch events and we want to ensure that the injected keys 5996 // are processed in the order they were received and we cannot trust that 5997 // the time stamp of injected events are monotonic. 5998 QueuedInputEvent last = mPendingInputEventTail; 5999 if (last == null) { 6000 mPendingInputEventHead = q; 6001 mPendingInputEventTail = q; 6002 } else { 6003 last.mNext = q; 6004 mPendingInputEventTail = q; 6005 } 6006 mPendingInputEventCount += 1; 6007 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6008 mPendingInputEventCount); 6009 6010 if (processImmediately) { 6011 doProcessInputEvents(); 6012 } else { 6013 scheduleProcessInputEvents(); 6014 } 6015 } 6016 6017 private void scheduleProcessInputEvents() { 6018 if (!mProcessInputEventsScheduled) { 6019 mProcessInputEventsScheduled = true; 6020 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 6021 msg.setAsynchronous(true); 6022 mHandler.sendMessage(msg); 6023 } 6024 } 6025 6026 void doProcessInputEvents() { 6027 // Deliver all pending input events in the queue. 6028 while (mPendingInputEventHead != null) { 6029 QueuedInputEvent q = mPendingInputEventHead; 6030 mPendingInputEventHead = q.mNext; 6031 if (mPendingInputEventHead == null) { 6032 mPendingInputEventTail = null; 6033 } 6034 q.mNext = null; 6035 6036 mPendingInputEventCount -= 1; 6037 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6038 mPendingInputEventCount); 6039 6040 long eventTime = q.mEvent.getEventTimeNano(); 6041 long oldestEventTime = eventTime; 6042 if (q.mEvent instanceof MotionEvent) { 6043 MotionEvent me = (MotionEvent)q.mEvent; 6044 if (me.getHistorySize() > 0) { 6045 oldestEventTime = me.getHistoricalEventTimeNano(0); 6046 } 6047 } 6048 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 6049 6050 deliverInputEvent(q); 6051 } 6052 6053 // We are done processing all input events that we can process right now 6054 // so we can clear the pending flag immediately. 6055 if (mProcessInputEventsScheduled) { 6056 mProcessInputEventsScheduled = false; 6057 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 6058 } 6059 } 6060 6061 private void deliverInputEvent(QueuedInputEvent q) { 6062 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6063 q.mEvent.getSequenceNumber()); 6064 if (mInputEventConsistencyVerifier != null) { 6065 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 6066 } 6067 6068 InputStage stage; 6069 if (q.shouldSendToSynthesizer()) { 6070 stage = mSyntheticInputStage; 6071 } else { 6072 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 6073 } 6074 6075 if (stage != null) { 6076 stage.deliver(q); 6077 } else { 6078 finishInputEvent(q); 6079 } 6080 } 6081 6082 private void finishInputEvent(QueuedInputEvent q) { 6083 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6084 q.mEvent.getSequenceNumber()); 6085 6086 if (q.mReceiver != null) { 6087 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 6088 q.mReceiver.finishInputEvent(q.mEvent, handled); 6089 } else { 6090 q.mEvent.recycleIfNeededAfterDispatch(); 6091 } 6092 6093 recycleQueuedInputEvent(q); 6094 } 6095 6096 private void adjustInputEventForCompatibility(InputEvent e) { 6097 if (mTargetSdkVersion < Build.VERSION_CODES.M && e instanceof MotionEvent) { 6098 MotionEvent motion = (MotionEvent) e; 6099 final int mask = 6100 MotionEvent.BUTTON_STYLUS_PRIMARY | MotionEvent.BUTTON_STYLUS_SECONDARY; 6101 final int buttonState = motion.getButtonState(); 6102 final int compatButtonState = (buttonState & mask) >> 4; 6103 if (compatButtonState != 0) { 6104 motion.setButtonState(buttonState | compatButtonState); 6105 } 6106 } 6107 } 6108 6109 static boolean isTerminalInputEvent(InputEvent event) { 6110 if (event instanceof KeyEvent) { 6111 final KeyEvent keyEvent = (KeyEvent)event; 6112 return keyEvent.getAction() == KeyEvent.ACTION_UP; 6113 } else { 6114 final MotionEvent motionEvent = (MotionEvent)event; 6115 final int action = motionEvent.getAction(); 6116 return action == MotionEvent.ACTION_UP 6117 || action == MotionEvent.ACTION_CANCEL 6118 || action == MotionEvent.ACTION_HOVER_EXIT; 6119 } 6120 } 6121 6122 void scheduleConsumeBatchedInput() { 6123 if (!mConsumeBatchedInputScheduled) { 6124 mConsumeBatchedInputScheduled = true; 6125 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 6126 mConsumedBatchedInputRunnable, null); 6127 } 6128 } 6129 6130 void unscheduleConsumeBatchedInput() { 6131 if (mConsumeBatchedInputScheduled) { 6132 mConsumeBatchedInputScheduled = false; 6133 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 6134 mConsumedBatchedInputRunnable, null); 6135 } 6136 } 6137 6138 void scheduleConsumeBatchedInputImmediately() { 6139 if (!mConsumeBatchedInputImmediatelyScheduled) { 6140 unscheduleConsumeBatchedInput(); 6141 mConsumeBatchedInputImmediatelyScheduled = true; 6142 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 6143 } 6144 } 6145 6146 void doConsumeBatchedInput(long frameTimeNanos) { 6147 if (mConsumeBatchedInputScheduled) { 6148 mConsumeBatchedInputScheduled = false; 6149 if (mInputEventReceiver != null) { 6150 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 6151 && frameTimeNanos != -1) { 6152 // If we consumed a batch here, we want to go ahead and schedule the 6153 // consumption of batched input events on the next frame. Otherwise, we would 6154 // wait until we have more input events pending and might get starved by other 6155 // things occurring in the process. If the frame time is -1, however, then 6156 // we're in a non-batching mode, so there's no need to schedule this. 6157 scheduleConsumeBatchedInput(); 6158 } 6159 } 6160 doProcessInputEvents(); 6161 } 6162 } 6163 6164 final class TraversalRunnable implements Runnable { 6165 @Override 6166 public void run() { 6167 doTraversal(); 6168 } 6169 } 6170 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 6171 6172 final class WindowInputEventReceiver extends InputEventReceiver { 6173 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 6174 super(inputChannel, looper); 6175 } 6176 6177 @Override 6178 public void onInputEvent(InputEvent event) { 6179 enqueueInputEvent(event, this, 0, true); 6180 } 6181 6182 @Override 6183 public void onBatchedInputEventPending() { 6184 if (mUnbufferedInputDispatch) { 6185 super.onBatchedInputEventPending(); 6186 } else { 6187 scheduleConsumeBatchedInput(); 6188 } 6189 } 6190 6191 @Override 6192 public void dispose() { 6193 unscheduleConsumeBatchedInput(); 6194 super.dispose(); 6195 } 6196 } 6197 WindowInputEventReceiver mInputEventReceiver; 6198 6199 final class ConsumeBatchedInputRunnable implements Runnable { 6200 @Override 6201 public void run() { 6202 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 6203 } 6204 } 6205 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 6206 new ConsumeBatchedInputRunnable(); 6207 boolean mConsumeBatchedInputScheduled; 6208 6209 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 6210 @Override 6211 public void run() { 6212 doConsumeBatchedInput(-1); 6213 } 6214 } 6215 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 6216 new ConsumeBatchedInputImmediatelyRunnable(); 6217 boolean mConsumeBatchedInputImmediatelyScheduled; 6218 6219 final class InvalidateOnAnimationRunnable implements Runnable { 6220 private boolean mPosted; 6221 private final ArrayList<View> mViews = new ArrayList<View>(); 6222 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 6223 new ArrayList<AttachInfo.InvalidateInfo>(); 6224 private View[] mTempViews; 6225 private AttachInfo.InvalidateInfo[] mTempViewRects; 6226 6227 public void addView(View view) { 6228 synchronized (this) { 6229 mViews.add(view); 6230 postIfNeededLocked(); 6231 } 6232 } 6233 6234 public void addViewRect(AttachInfo.InvalidateInfo info) { 6235 synchronized (this) { 6236 mViewRects.add(info); 6237 postIfNeededLocked(); 6238 } 6239 } 6240 6241 public void removeView(View view) { 6242 synchronized (this) { 6243 mViews.remove(view); 6244 6245 for (int i = mViewRects.size(); i-- > 0; ) { 6246 AttachInfo.InvalidateInfo info = mViewRects.get(i); 6247 if (info.target == view) { 6248 mViewRects.remove(i); 6249 info.recycle(); 6250 } 6251 } 6252 6253 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 6254 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 6255 mPosted = false; 6256 } 6257 } 6258 } 6259 6260 @Override 6261 public void run() { 6262 final int viewCount; 6263 final int viewRectCount; 6264 synchronized (this) { 6265 mPosted = false; 6266 6267 viewCount = mViews.size(); 6268 if (viewCount != 0) { 6269 mTempViews = mViews.toArray(mTempViews != null 6270 ? mTempViews : new View[viewCount]); 6271 mViews.clear(); 6272 } 6273 6274 viewRectCount = mViewRects.size(); 6275 if (viewRectCount != 0) { 6276 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6277 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6278 mViewRects.clear(); 6279 } 6280 } 6281 6282 for (int i = 0; i < viewCount; i++) { 6283 mTempViews[i].invalidate(); 6284 mTempViews[i] = null; 6285 } 6286 6287 for (int i = 0; i < viewRectCount; i++) { 6288 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6289 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6290 info.recycle(); 6291 } 6292 } 6293 6294 private void postIfNeededLocked() { 6295 if (!mPosted) { 6296 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6297 mPosted = true; 6298 } 6299 } 6300 } 6301 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6302 new InvalidateOnAnimationRunnable(); 6303 6304 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6305 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6306 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6307 } 6308 6309 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6310 long delayMilliseconds) { 6311 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6312 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6313 } 6314 6315 public void dispatchInvalidateOnAnimation(View view) { 6316 mInvalidateOnAnimationRunnable.addView(view); 6317 } 6318 6319 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6320 mInvalidateOnAnimationRunnable.addViewRect(info); 6321 } 6322 6323 public void cancelInvalidate(View view) { 6324 mHandler.removeMessages(MSG_INVALIDATE, view); 6325 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6326 // them to the pool 6327 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6328 mInvalidateOnAnimationRunnable.removeView(view); 6329 } 6330 6331 public void dispatchInputEvent(InputEvent event) { 6332 dispatchInputEvent(event, null); 6333 } 6334 6335 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6336 SomeArgs args = SomeArgs.obtain(); 6337 args.arg1 = event; 6338 args.arg2 = receiver; 6339 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6340 msg.setAsynchronous(true); 6341 mHandler.sendMessage(msg); 6342 } 6343 6344 public void synthesizeInputEvent(InputEvent event) { 6345 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6346 msg.setAsynchronous(true); 6347 mHandler.sendMessage(msg); 6348 } 6349 6350 public void dispatchKeyFromIme(KeyEvent event) { 6351 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6352 msg.setAsynchronous(true); 6353 mHandler.sendMessage(msg); 6354 } 6355 6356 /** 6357 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6358 * 6359 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6360 * passes in. 6361 */ 6362 public void dispatchUnhandledInputEvent(InputEvent event) { 6363 if (event instanceof MotionEvent) { 6364 event = MotionEvent.obtain((MotionEvent) event); 6365 } 6366 synthesizeInputEvent(event); 6367 } 6368 6369 public void dispatchAppVisibility(boolean visible) { 6370 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6371 msg.arg1 = visible ? 1 : 0; 6372 mHandler.sendMessage(msg); 6373 } 6374 6375 public void dispatchGetNewSurface() { 6376 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6377 mHandler.sendMessage(msg); 6378 } 6379 6380 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6381 Message msg = Message.obtain(); 6382 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6383 msg.arg1 = hasFocus ? 1 : 0; 6384 msg.arg2 = inTouchMode ? 1 : 0; 6385 mHandler.sendMessage(msg); 6386 } 6387 6388 public void dispatchWindowShown() { 6389 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6390 } 6391 6392 public void dispatchCloseSystemDialogs(String reason) { 6393 Message msg = Message.obtain(); 6394 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6395 msg.obj = reason; 6396 mHandler.sendMessage(msg); 6397 } 6398 6399 public void dispatchDragEvent(DragEvent event) { 6400 final int what; 6401 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6402 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6403 mHandler.removeMessages(what); 6404 } else { 6405 what = MSG_DISPATCH_DRAG_EVENT; 6406 } 6407 Message msg = mHandler.obtainMessage(what, event); 6408 mHandler.sendMessage(msg); 6409 } 6410 6411 public void updatePointerIcon(float x, float y) { 6412 final int what = MSG_UPDATE_POINTER_ICON; 6413 mHandler.removeMessages(what); 6414 final long now = SystemClock.uptimeMillis(); 6415 final MotionEvent event = MotionEvent.obtain( 6416 0, now, MotionEvent.ACTION_HOVER_MOVE, x, y, 0); 6417 Message msg = mHandler.obtainMessage(what, event); 6418 mHandler.sendMessage(msg); 6419 } 6420 6421 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6422 int localValue, int localChanges) { 6423 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6424 args.seq = seq; 6425 args.globalVisibility = globalVisibility; 6426 args.localValue = localValue; 6427 args.localChanges = localChanges; 6428 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6429 } 6430 6431 public void dispatchCheckFocus() { 6432 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6433 // This will result in a call to checkFocus() below. 6434 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6435 } 6436 } 6437 6438 public void dispatchRequestKeyboardShortcuts(IResultReceiver receiver) { 6439 mHandler.obtainMessage(MSG_REQUEST_KEYBOARD_SHORTCUTS, receiver).sendToTarget(); 6440 } 6441 6442 /** 6443 * Post a callback to send a 6444 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6445 * This event is send at most once every 6446 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6447 */ 6448 private void postSendWindowContentChangedCallback(View source, int changeType) { 6449 if (mSendWindowContentChangedAccessibilityEvent == null) { 6450 mSendWindowContentChangedAccessibilityEvent = 6451 new SendWindowContentChangedAccessibilityEvent(); 6452 } 6453 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6454 } 6455 6456 /** 6457 * Remove a posted callback to send a 6458 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6459 */ 6460 private void removeSendWindowContentChangedCallback() { 6461 if (mSendWindowContentChangedAccessibilityEvent != null) { 6462 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6463 } 6464 } 6465 6466 @Override 6467 public boolean showContextMenuForChild(View originalView) { 6468 return false; 6469 } 6470 6471 @Override 6472 public boolean showContextMenuForChild(View originalView, float x, float y) { 6473 return false; 6474 } 6475 6476 @Override 6477 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6478 return null; 6479 } 6480 6481 @Override 6482 public ActionMode startActionModeForChild( 6483 View originalView, ActionMode.Callback callback, int type) { 6484 return null; 6485 } 6486 6487 @Override 6488 public void createContextMenu(ContextMenu menu) { 6489 } 6490 6491 @Override 6492 public void childDrawableStateChanged(View child) { 6493 } 6494 6495 @Override 6496 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6497 if (mView == null || mStopped || mPausedForTransition) { 6498 return false; 6499 } 6500 // Intercept accessibility focus events fired by virtual nodes to keep 6501 // track of accessibility focus position in such nodes. 6502 final int eventType = event.getEventType(); 6503 switch (eventType) { 6504 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6505 final long sourceNodeId = event.getSourceNodeId(); 6506 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6507 sourceNodeId); 6508 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6509 if (source != null) { 6510 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6511 if (provider != null) { 6512 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6513 sourceNodeId); 6514 final AccessibilityNodeInfo node; 6515 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6516 node = provider.createAccessibilityNodeInfo( 6517 AccessibilityNodeProvider.HOST_VIEW_ID); 6518 } else { 6519 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6520 } 6521 setAccessibilityFocus(source, node); 6522 } 6523 } 6524 } break; 6525 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6526 final long sourceNodeId = event.getSourceNodeId(); 6527 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6528 sourceNodeId); 6529 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6530 if (source != null) { 6531 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6532 if (provider != null) { 6533 setAccessibilityFocus(null, null); 6534 } 6535 } 6536 } break; 6537 6538 6539 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6540 handleWindowContentChangedEvent(event); 6541 } break; 6542 } 6543 mAccessibilityManager.sendAccessibilityEvent(event); 6544 return true; 6545 } 6546 6547 /** 6548 * Updates the focused virtual view, when necessary, in response to a 6549 * content changed event. 6550 * <p> 6551 * This is necessary to get updated bounds after a position change. 6552 * 6553 * @param event an accessibility event of type 6554 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} 6555 */ 6556 private void handleWindowContentChangedEvent(AccessibilityEvent event) { 6557 final View focusedHost = mAccessibilityFocusedHost; 6558 if (focusedHost == null || mAccessibilityFocusedVirtualView == null) { 6559 // No virtual view focused, nothing to do here. 6560 return; 6561 } 6562 6563 final AccessibilityNodeProvider provider = focusedHost.getAccessibilityNodeProvider(); 6564 if (provider == null) { 6565 // Error state: virtual view with no provider. Clear focus. 6566 mAccessibilityFocusedHost = null; 6567 mAccessibilityFocusedVirtualView = null; 6568 focusedHost.clearAccessibilityFocusNoCallbacks(); 6569 return; 6570 } 6571 6572 // We only care about change types that may affect the bounds of the 6573 // focused virtual view. 6574 final int changes = event.getContentChangeTypes(); 6575 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) == 0 6576 && changes != AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6577 return; 6578 } 6579 6580 final long eventSourceNodeId = event.getSourceNodeId(); 6581 final int changedViewId = AccessibilityNodeInfo.getAccessibilityViewId(eventSourceNodeId); 6582 6583 // Search up the tree for subtree containment. 6584 boolean hostInSubtree = false; 6585 View root = mAccessibilityFocusedHost; 6586 while (root != null && !hostInSubtree) { 6587 if (changedViewId == root.getAccessibilityViewId()) { 6588 hostInSubtree = true; 6589 } else { 6590 final ViewParent parent = root.getParent(); 6591 if (parent instanceof View) { 6592 root = (View) parent; 6593 } else { 6594 root = null; 6595 } 6596 } 6597 } 6598 6599 // We care only about changes in subtrees containing the host view. 6600 if (!hostInSubtree) { 6601 return; 6602 } 6603 6604 final long focusedSourceNodeId = mAccessibilityFocusedVirtualView.getSourceNodeId(); 6605 int focusedChildId = AccessibilityNodeInfo.getVirtualDescendantId(focusedSourceNodeId); 6606 if (focusedChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6607 // TODO: Should we clear the focused virtual view? 6608 focusedChildId = AccessibilityNodeProvider.HOST_VIEW_ID; 6609 } 6610 6611 // Refresh the node for the focused virtual view. 6612 final Rect oldBounds = mTempRect; 6613 mAccessibilityFocusedVirtualView.getBoundsInScreen(oldBounds); 6614 mAccessibilityFocusedVirtualView = provider.createAccessibilityNodeInfo(focusedChildId); 6615 if (mAccessibilityFocusedVirtualView == null) { 6616 // Error state: The node no longer exists. Clear focus. 6617 mAccessibilityFocusedHost = null; 6618 focusedHost.clearAccessibilityFocusNoCallbacks(); 6619 6620 // This will probably fail, but try to keep the provider's internal 6621 // state consistent by clearing focus. 6622 provider.performAction(focusedChildId, 6623 AccessibilityAction.ACTION_CLEAR_ACCESSIBILITY_FOCUS.getId(), null); 6624 invalidateRectOnScreen(oldBounds); 6625 } else { 6626 // The node was refreshed, invalidate bounds if necessary. 6627 final Rect newBounds = mAccessibilityFocusedVirtualView.getBoundsInScreen(); 6628 if (!oldBounds.equals(newBounds)) { 6629 oldBounds.union(newBounds); 6630 invalidateRectOnScreen(oldBounds); 6631 } 6632 } 6633 } 6634 6635 @Override 6636 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6637 postSendWindowContentChangedCallback(source, changeType); 6638 } 6639 6640 @Override 6641 public boolean canResolveLayoutDirection() { 6642 return true; 6643 } 6644 6645 @Override 6646 public boolean isLayoutDirectionResolved() { 6647 return true; 6648 } 6649 6650 @Override 6651 public int getLayoutDirection() { 6652 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6653 } 6654 6655 @Override 6656 public boolean canResolveTextDirection() { 6657 return true; 6658 } 6659 6660 @Override 6661 public boolean isTextDirectionResolved() { 6662 return true; 6663 } 6664 6665 @Override 6666 public int getTextDirection() { 6667 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6668 } 6669 6670 @Override 6671 public boolean canResolveTextAlignment() { 6672 return true; 6673 } 6674 6675 @Override 6676 public boolean isTextAlignmentResolved() { 6677 return true; 6678 } 6679 6680 @Override 6681 public int getTextAlignment() { 6682 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6683 } 6684 6685 private View getCommonPredecessor(View first, View second) { 6686 if (mTempHashSet == null) { 6687 mTempHashSet = new HashSet<View>(); 6688 } 6689 HashSet<View> seen = mTempHashSet; 6690 seen.clear(); 6691 View firstCurrent = first; 6692 while (firstCurrent != null) { 6693 seen.add(firstCurrent); 6694 ViewParent firstCurrentParent = firstCurrent.mParent; 6695 if (firstCurrentParent instanceof View) { 6696 firstCurrent = (View) firstCurrentParent; 6697 } else { 6698 firstCurrent = null; 6699 } 6700 } 6701 View secondCurrent = second; 6702 while (secondCurrent != null) { 6703 if (seen.contains(secondCurrent)) { 6704 seen.clear(); 6705 return secondCurrent; 6706 } 6707 ViewParent secondCurrentParent = secondCurrent.mParent; 6708 if (secondCurrentParent instanceof View) { 6709 secondCurrent = (View) secondCurrentParent; 6710 } else { 6711 secondCurrent = null; 6712 } 6713 } 6714 seen.clear(); 6715 return null; 6716 } 6717 6718 void checkThread() { 6719 if (mThread != Thread.currentThread()) { 6720 throw new CalledFromWrongThreadException( 6721 "Only the original thread that created a view hierarchy can touch its views."); 6722 } 6723 } 6724 6725 @Override 6726 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6727 // ViewAncestor never intercepts touch event, so this can be a no-op 6728 } 6729 6730 @Override 6731 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6732 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6733 if (rectangle != null) { 6734 mTempRect.set(rectangle); 6735 mTempRect.offset(0, -mCurScrollY); 6736 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6737 try { 6738 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6739 } catch (RemoteException re) { 6740 /* ignore */ 6741 } 6742 } 6743 return scrolled; 6744 } 6745 6746 @Override 6747 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6748 // Do nothing. 6749 } 6750 6751 @Override 6752 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6753 return false; 6754 } 6755 6756 @Override 6757 public void onStopNestedScroll(View target) { 6758 } 6759 6760 @Override 6761 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6762 } 6763 6764 @Override 6765 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6766 int dxUnconsumed, int dyUnconsumed) { 6767 } 6768 6769 @Override 6770 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6771 } 6772 6773 @Override 6774 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6775 return false; 6776 } 6777 6778 @Override 6779 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6780 return false; 6781 } 6782 6783 @Override 6784 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6785 return false; 6786 } 6787 6788 /** 6789 * Force the window to report its next draw. 6790 * <p> 6791 * This method is only supposed to be used to speed up the interaction from SystemUI and window 6792 * manager when waiting for the first frame to be drawn when turning on the screen. DO NOT USE 6793 * unless you fully understand this interaction. 6794 * @hide 6795 */ 6796 public void setReportNextDraw() { 6797 mReportNextDraw = true; 6798 invalidate(); 6799 } 6800 6801 void changeCanvasOpacity(boolean opaque) { 6802 Log.d(mTag, "changeCanvasOpacity: opaque=" + opaque); 6803 if (mAttachInfo.mHardwareRenderer != null) { 6804 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6805 } 6806 } 6807 6808 long getNextFrameNumber() { 6809 long frameNumber = -1; 6810 if (mSurfaceHolder != null) { 6811 mSurfaceHolder.mSurfaceLock.lock(); 6812 } 6813 if (mSurface.isValid()) { 6814 frameNumber = mSurface.getNextFrameNumber(); 6815 } 6816 if (mSurfaceHolder != null) { 6817 mSurfaceHolder.mSurfaceLock.unlock(); 6818 } 6819 return frameNumber; 6820 } 6821 6822 class TakenSurfaceHolder extends BaseSurfaceHolder { 6823 @Override 6824 public boolean onAllowLockCanvas() { 6825 return mDrawingAllowed; 6826 } 6827 6828 @Override 6829 public void onRelayoutContainer() { 6830 // Not currently interesting -- from changing between fixed and layout size. 6831 } 6832 6833 @Override 6834 public void setFormat(int format) { 6835 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6836 } 6837 6838 @Override 6839 public void setType(int type) { 6840 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6841 } 6842 6843 @Override 6844 public void onUpdateSurface() { 6845 // We take care of format and type changes on our own. 6846 throw new IllegalStateException("Shouldn't be here"); 6847 } 6848 6849 @Override 6850 public boolean isCreating() { 6851 return mIsCreating; 6852 } 6853 6854 @Override 6855 public void setFixedSize(int width, int height) { 6856 throw new UnsupportedOperationException( 6857 "Currently only support sizing from layout"); 6858 } 6859 6860 @Override 6861 public void setKeepScreenOn(boolean screenOn) { 6862 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6863 } 6864 } 6865 6866 static class W extends IWindow.Stub { 6867 private final WeakReference<ViewRootImpl> mViewAncestor; 6868 private final IWindowSession mWindowSession; 6869 6870 W(ViewRootImpl viewAncestor) { 6871 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6872 mWindowSession = viewAncestor.mWindowSession; 6873 } 6874 6875 @Override 6876 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6877 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 6878 Configuration newConfig, Rect backDropFrame) { 6879 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6880 if (viewAncestor != null) { 6881 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6882 visibleInsets, stableInsets, outsets, reportDraw, newConfig, backDropFrame); 6883 } 6884 } 6885 6886 @Override 6887 public void moved(int newX, int newY) { 6888 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6889 if (viewAncestor != null) { 6890 viewAncestor.dispatchMoved(newX, newY); 6891 } 6892 } 6893 6894 @Override 6895 public void dispatchAppVisibility(boolean visible) { 6896 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6897 if (viewAncestor != null) { 6898 viewAncestor.dispatchAppVisibility(visible); 6899 } 6900 } 6901 6902 @Override 6903 public void dispatchGetNewSurface() { 6904 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6905 if (viewAncestor != null) { 6906 viewAncestor.dispatchGetNewSurface(); 6907 } 6908 } 6909 6910 @Override 6911 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6912 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6913 if (viewAncestor != null) { 6914 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6915 } 6916 } 6917 6918 private static int checkCallingPermission(String permission) { 6919 try { 6920 return ActivityManagerNative.getDefault().checkPermission( 6921 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6922 } catch (RemoteException e) { 6923 return PackageManager.PERMISSION_DENIED; 6924 } 6925 } 6926 6927 @Override 6928 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6929 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6930 if (viewAncestor != null) { 6931 final View view = viewAncestor.mView; 6932 if (view != null) { 6933 if (checkCallingPermission(Manifest.permission.DUMP) != 6934 PackageManager.PERMISSION_GRANTED) { 6935 throw new SecurityException("Insufficient permissions to invoke" 6936 + " executeCommand() from pid=" + Binder.getCallingPid() 6937 + ", uid=" + Binder.getCallingUid()); 6938 } 6939 6940 OutputStream clientStream = null; 6941 try { 6942 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6943 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6944 } catch (IOException e) { 6945 e.printStackTrace(); 6946 } finally { 6947 if (clientStream != null) { 6948 try { 6949 clientStream.close(); 6950 } catch (IOException e) { 6951 e.printStackTrace(); 6952 } 6953 } 6954 } 6955 } 6956 } 6957 } 6958 6959 @Override 6960 public void closeSystemDialogs(String reason) { 6961 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6962 if (viewAncestor != null) { 6963 viewAncestor.dispatchCloseSystemDialogs(reason); 6964 } 6965 } 6966 6967 @Override 6968 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6969 boolean sync) { 6970 if (sync) { 6971 try { 6972 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6973 } catch (RemoteException e) { 6974 } 6975 } 6976 } 6977 6978 @Override 6979 public void dispatchWallpaperCommand(String action, int x, int y, 6980 int z, Bundle extras, boolean sync) { 6981 if (sync) { 6982 try { 6983 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6984 } catch (RemoteException e) { 6985 } 6986 } 6987 } 6988 6989 /* Drag/drop */ 6990 @Override 6991 public void dispatchDragEvent(DragEvent event) { 6992 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6993 if (viewAncestor != null) { 6994 viewAncestor.dispatchDragEvent(event); 6995 } 6996 } 6997 6998 @Override 6999 public void updatePointerIcon(float x, float y) { 7000 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7001 if (viewAncestor != null) { 7002 viewAncestor.updatePointerIcon(x, y); 7003 } 7004 } 7005 7006 @Override 7007 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 7008 int localValue, int localChanges) { 7009 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7010 if (viewAncestor != null) { 7011 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 7012 localValue, localChanges); 7013 } 7014 } 7015 7016 @Override 7017 public void dispatchWindowShown() { 7018 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7019 if (viewAncestor != null) { 7020 viewAncestor.dispatchWindowShown(); 7021 } 7022 } 7023 7024 @Override 7025 public void requestAppKeyboardShortcuts(IResultReceiver receiver) { 7026 ViewRootImpl viewAncestor = mViewAncestor.get(); 7027 if (viewAncestor != null) { 7028 viewAncestor.dispatchRequestKeyboardShortcuts(receiver); 7029 } 7030 } 7031 } 7032 7033 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 7034 public CalledFromWrongThreadException(String msg) { 7035 super(msg); 7036 } 7037 } 7038 7039 static HandlerActionQueue getRunQueue() { 7040 HandlerActionQueue rq = sRunQueues.get(); 7041 if (rq != null) { 7042 return rq; 7043 } 7044 rq = new HandlerActionQueue(); 7045 sRunQueues.set(rq); 7046 return rq; 7047 } 7048 7049 /** 7050 * Start a drag resizing which will inform all listeners that a window resize is taking place. 7051 */ 7052 private void startDragResizing(Rect initialBounds) { 7053 if (!mDragResizing) { 7054 mDragResizing = true; 7055 synchronized (mWindowCallbacks) { 7056 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7057 mWindowCallbacks.get(i).onWindowDragResizeStart(initialBounds); 7058 } 7059 } 7060 mFullRedrawNeeded = true; 7061 } 7062 } 7063 7064 /** 7065 * End a drag resize which will inform all listeners that a window resize has ended. 7066 */ 7067 private void endDragResizing() { 7068 if (mDragResizing) { 7069 mDragResizing = false; 7070 synchronized (mWindowCallbacks) { 7071 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7072 mWindowCallbacks.get(i).onWindowDragResizeEnd(); 7073 } 7074 } 7075 mFullRedrawNeeded = true; 7076 } 7077 } 7078 7079 private boolean updateContentDrawBounds() { 7080 boolean updated = false; 7081 synchronized (mWindowCallbacks) { 7082 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7083 updated |= mWindowCallbacks.get(i).onContentDrawn( 7084 mWindowAttributes.surfaceInsets.left, 7085 mWindowAttributes.surfaceInsets.top, 7086 mWidth, mHeight); 7087 } 7088 } 7089 return updated | (mDragResizing && mReportNextDraw); 7090 } 7091 7092 private void requestDrawWindow() { 7093 if (mReportNextDraw) { 7094 mWindowDrawCountDown = new CountDownLatch(mWindowCallbacks.size()); 7095 } 7096 synchronized (mWindowCallbacks) { 7097 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7098 mWindowCallbacks.get(i).onRequestDraw(mReportNextDraw); 7099 } 7100 } 7101 } 7102 7103 /** 7104 * Tells this instance that its corresponding activity has just relaunched. In this case, we 7105 * need to force a relayout of the window to make sure we get the correct bounds from window 7106 * manager. 7107 */ 7108 public void reportActivityRelaunched() { 7109 mActivityRelaunched = true; 7110 } 7111 7112 /** 7113 * Class for managing the accessibility interaction connection 7114 * based on the global accessibility state. 7115 */ 7116 final class AccessibilityInteractionConnectionManager 7117 implements AccessibilityStateChangeListener { 7118 @Override 7119 public void onAccessibilityStateChanged(boolean enabled) { 7120 if (enabled) { 7121 ensureConnection(); 7122 if (mAttachInfo.mHasWindowFocus) { 7123 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 7124 View focusedView = mView.findFocus(); 7125 if (focusedView != null && focusedView != mView) { 7126 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 7127 } 7128 } 7129 } else { 7130 ensureNoConnection(); 7131 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 7132 } 7133 } 7134 7135 public void ensureConnection() { 7136 final boolean registered = 7137 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7138 if (!registered) { 7139 mAttachInfo.mAccessibilityWindowId = 7140 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 7141 new AccessibilityInteractionConnection(ViewRootImpl.this)); 7142 } 7143 } 7144 7145 public void ensureNoConnection() { 7146 final boolean registered = 7147 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7148 if (registered) { 7149 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7150 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 7151 } 7152 } 7153 } 7154 7155 final class HighContrastTextManager implements HighTextContrastChangeListener { 7156 HighContrastTextManager() { 7157 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 7158 } 7159 @Override 7160 public void onHighTextContrastStateChanged(boolean enabled) { 7161 mAttachInfo.mHighContrastText = enabled; 7162 7163 // Destroy Displaylists so they can be recreated with high contrast recordings 7164 destroyHardwareResources(); 7165 7166 // Schedule redraw, which will rerecord + redraw all text 7167 invalidate(); 7168 } 7169 } 7170 7171 /** 7172 * This class is an interface this ViewAncestor provides to the 7173 * AccessibilityManagerService to the latter can interact with 7174 * the view hierarchy in this ViewAncestor. 7175 */ 7176 static final class AccessibilityInteractionConnection 7177 extends IAccessibilityInteractionConnection.Stub { 7178 private final WeakReference<ViewRootImpl> mViewRootImpl; 7179 7180 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 7181 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 7182 } 7183 7184 @Override 7185 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 7186 Region interactiveRegion, int interactionId, 7187 IAccessibilityInteractionConnectionCallback callback, int flags, 7188 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7189 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7190 if (viewRootImpl != null && viewRootImpl.mView != null) { 7191 viewRootImpl.getAccessibilityInteractionController() 7192 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 7193 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7194 interrogatingTid, spec); 7195 } else { 7196 // We cannot make the call and notify the caller so it does not wait. 7197 try { 7198 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7199 } catch (RemoteException re) { 7200 /* best effort - ignore */ 7201 } 7202 } 7203 } 7204 7205 @Override 7206 public void performAccessibilityAction(long accessibilityNodeId, int action, 7207 Bundle arguments, int interactionId, 7208 IAccessibilityInteractionConnectionCallback callback, int flags, 7209 int interrogatingPid, long interrogatingTid) { 7210 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7211 if (viewRootImpl != null && viewRootImpl.mView != null) { 7212 viewRootImpl.getAccessibilityInteractionController() 7213 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 7214 interactionId, callback, flags, interrogatingPid, interrogatingTid); 7215 } else { 7216 // We cannot make the call and notify the caller so it does not wait. 7217 try { 7218 callback.setPerformAccessibilityActionResult(false, interactionId); 7219 } catch (RemoteException re) { 7220 /* best effort - ignore */ 7221 } 7222 } 7223 } 7224 7225 @Override 7226 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 7227 String viewId, Region interactiveRegion, int interactionId, 7228 IAccessibilityInteractionConnectionCallback callback, int flags, 7229 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7230 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7231 if (viewRootImpl != null && viewRootImpl.mView != null) { 7232 viewRootImpl.getAccessibilityInteractionController() 7233 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 7234 viewId, interactiveRegion, interactionId, callback, flags, 7235 interrogatingPid, interrogatingTid, spec); 7236 } else { 7237 // We cannot make the call and notify the caller so it does not wait. 7238 try { 7239 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7240 } catch (RemoteException re) { 7241 /* best effort - ignore */ 7242 } 7243 } 7244 } 7245 7246 @Override 7247 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 7248 Region interactiveRegion, int interactionId, 7249 IAccessibilityInteractionConnectionCallback callback, int flags, 7250 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7251 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7252 if (viewRootImpl != null && viewRootImpl.mView != null) { 7253 viewRootImpl.getAccessibilityInteractionController() 7254 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 7255 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7256 interrogatingTid, spec); 7257 } else { 7258 // We cannot make the call and notify the caller so it does not wait. 7259 try { 7260 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7261 } catch (RemoteException re) { 7262 /* best effort - ignore */ 7263 } 7264 } 7265 } 7266 7267 @Override 7268 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 7269 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7270 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7271 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7272 if (viewRootImpl != null && viewRootImpl.mView != null) { 7273 viewRootImpl.getAccessibilityInteractionController() 7274 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 7275 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7276 spec); 7277 } else { 7278 // We cannot make the call and notify the caller so it does not wait. 7279 try { 7280 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7281 } catch (RemoteException re) { 7282 /* best effort - ignore */ 7283 } 7284 } 7285 } 7286 7287 @Override 7288 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 7289 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7290 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7291 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7292 if (viewRootImpl != null && viewRootImpl.mView != null) { 7293 viewRootImpl.getAccessibilityInteractionController() 7294 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 7295 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7296 spec); 7297 } else { 7298 // We cannot make the call and notify the caller so it does not wait. 7299 try { 7300 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7301 } catch (RemoteException re) { 7302 /* best effort - ignore */ 7303 } 7304 } 7305 } 7306 } 7307 7308 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 7309 private int mChangeTypes = 0; 7310 7311 public View mSource; 7312 public long mLastEventTimeMillis; 7313 7314 @Override 7315 public void run() { 7316 // The accessibility may be turned off while we were waiting so check again. 7317 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 7318 mLastEventTimeMillis = SystemClock.uptimeMillis(); 7319 AccessibilityEvent event = AccessibilityEvent.obtain(); 7320 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 7321 event.setContentChangeTypes(mChangeTypes); 7322 mSource.sendAccessibilityEventUnchecked(event); 7323 } else { 7324 mLastEventTimeMillis = 0; 7325 } 7326 // In any case reset to initial state. 7327 mSource.resetSubtreeAccessibilityStateChanged(); 7328 mSource = null; 7329 mChangeTypes = 0; 7330 } 7331 7332 public void runOrPost(View source, int changeType) { 7333 if (mSource != null) { 7334 // If there is no common predecessor, then mSource points to 7335 // a removed view, hence in this case always prefer the source. 7336 View predecessor = getCommonPredecessor(mSource, source); 7337 mSource = (predecessor != null) ? predecessor : source; 7338 mChangeTypes |= changeType; 7339 return; 7340 } 7341 mSource = source; 7342 mChangeTypes = changeType; 7343 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 7344 final long minEventIntevalMillis = 7345 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 7346 if (timeSinceLastMillis >= minEventIntevalMillis) { 7347 mSource.removeCallbacks(this); 7348 run(); 7349 } else { 7350 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 7351 } 7352 } 7353 } 7354} 7355