ViewRootImpl.java revision 3e5bf786b7ca36fa0cc150fcd8d0e7a69ecb9db0
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.ViewGroup.LayoutParams.MATCH_PARENT; 20import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY; 21import static android.view.WindowManager.LayoutParams.TYPE_DOCK_DIVIDER; 22import static android.view.WindowManager.LayoutParams.TYPE_INPUT_METHOD; 23import static android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL; 24import static android.view.WindowManager.LayoutParams.TYPE_VOLUME_OVERLAY; 25 26import android.Manifest; 27import android.animation.LayoutTransition; 28import android.app.ActivityManagerNative; 29import android.content.ClipDescription; 30import android.content.ComponentCallbacks; 31import android.content.Context; 32import android.content.pm.PackageManager; 33import android.content.res.CompatibilityInfo; 34import android.content.res.Configuration; 35import android.content.res.Resources; 36import android.graphics.Canvas; 37import android.graphics.Matrix; 38import android.graphics.PixelFormat; 39import android.graphics.Point; 40import android.graphics.PointF; 41import android.graphics.PorterDuff; 42import android.graphics.Rect; 43import android.graphics.Region; 44import android.graphics.drawable.Drawable; 45import android.hardware.display.DisplayManager; 46import android.hardware.display.DisplayManager.DisplayListener; 47import android.hardware.input.InputManager; 48import android.media.AudioManager; 49import android.os.Binder; 50import android.os.Build; 51import android.os.Bundle; 52import android.os.Debug; 53import android.os.Handler; 54import android.os.Looper; 55import android.os.Message; 56import android.os.ParcelFileDescriptor; 57import android.os.Process; 58import android.os.RemoteException; 59import android.os.SystemClock; 60import android.os.SystemProperties; 61import android.os.Trace; 62import android.util.AndroidRuntimeException; 63import android.util.DisplayMetrics; 64import android.util.Log; 65import android.util.Slog; 66import android.util.TimeUtils; 67import android.util.TypedValue; 68import android.view.Surface.OutOfResourcesException; 69import android.view.View.AttachInfo; 70import android.view.View.MeasureSpec; 71import android.view.accessibility.AccessibilityEvent; 72import android.view.accessibility.AccessibilityManager; 73import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 74import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 75import android.view.accessibility.AccessibilityNodeInfo; 76import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction; 77import android.view.accessibility.AccessibilityNodeProvider; 78import android.view.accessibility.IAccessibilityInteractionConnection; 79import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 80import android.view.animation.AccelerateDecelerateInterpolator; 81import android.view.animation.Interpolator; 82import android.view.inputmethod.InputConnection; 83import android.view.inputmethod.InputMethodManager; 84import android.widget.Scroller; 85 86import com.android.internal.R; 87import com.android.internal.os.IResultReceiver; 88import com.android.internal.os.SomeArgs; 89import com.android.internal.policy.PhoneFallbackEventHandler; 90import com.android.internal.view.BaseSurfaceHolder; 91import com.android.internal.view.RootViewSurfaceTaker; 92 93import java.io.FileDescriptor; 94import java.io.IOException; 95import java.io.OutputStream; 96import java.io.PrintWriter; 97import java.lang.ref.WeakReference; 98import java.util.ArrayList; 99import java.util.concurrent.CountDownLatch; 100import java.util.HashSet; 101 102/** 103 * The top of a view hierarchy, implementing the needed protocol between View 104 * and the WindowManager. This is for the most part an internal implementation 105 * detail of {@link WindowManagerGlobal}. 106 * 107 * {@hide} 108 */ 109@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 110public final class ViewRootImpl implements ViewParent, 111 View.AttachInfo.Callbacks, ThreadedRenderer.HardwareDrawCallbacks { 112 private static final String TAG = "ViewRootImpl"; 113 private static final boolean DBG = false; 114 private static final boolean LOCAL_LOGV = false; 115 /** @noinspection PointlessBooleanExpression*/ 116 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 117 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 118 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 119 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 120 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 121 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 122 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 123 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 124 private static final boolean DEBUG_FPS = false; 125 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 126 127 /** 128 * Set to false if we do not want to use the multi threaded renderer. Note that by disabling 129 * this, WindowCallbacks will not fire. 130 */ 131 private static final boolean USE_MT_RENDERER = true; 132 133 /** 134 * Set this system property to true to force the view hierarchy to render 135 * at 60 Hz. This can be used to measure the potential framerate. 136 */ 137 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 138 139 // properties used by emulator to determine display shape 140 public static final String PROPERTY_EMULATOR_WIN_OUTSET_BOTTOM_PX = 141 "ro.emu.win_outset_bottom_px"; 142 143 /** 144 * Maximum time we allow the user to roll the trackball enough to generate 145 * a key event, before resetting the counters. 146 */ 147 static final int MAX_TRACKBALL_DELAY = 250; 148 149 private static final int RESIZE_MODE_FREEFORM = 0; 150 private static final int RESIZE_MODE_DOCKED_DIVIDER = 1; 151 152 static final ThreadLocal<HandlerActionQueue> sRunQueues = new ThreadLocal<HandlerActionQueue>(); 153 154 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList(); 155 static boolean sFirstDrawComplete = false; 156 157 static final ArrayList<ComponentCallbacks> sConfigCallbacks = new ArrayList(); 158 159 final ArrayList<WindowCallbacks> mWindowCallbacks = new ArrayList(); 160 final Context mContext; 161 final IWindowSession mWindowSession; 162 final Display mDisplay; 163 final DisplayManager mDisplayManager; 164 final String mBasePackageName; 165 166 final int[] mTmpLocation = new int[2]; 167 168 final TypedValue mTmpValue = new TypedValue(); 169 170 final Thread mThread; 171 172 final WindowLeaked mLocation; 173 174 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 175 176 final W mWindow; 177 178 final int mTargetSdkVersion; 179 180 int mSeq; 181 182 View mView; 183 184 View mAccessibilityFocusedHost; 185 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 186 187 // The view which captures mouse input, or null when no one is capturing. 188 View mCapturingView; 189 190 int mViewVisibility; 191 boolean mAppVisible = true; 192 // For recents to freeform transition we need to keep drawing after the app receives information 193 // that it became invisible. This will ignore that information and depend on the decor view 194 // visibility to control drawing. The decor view visibility will get adjusted when the app get 195 // stopped and that's when the app will stop drawing further frames. 196 private boolean mForceDecorViewVisibility = false; 197 int mOrigWindowType = -1; 198 199 /** Whether the window had focus during the most recent traversal. */ 200 boolean mHadWindowFocus; 201 202 /** 203 * Whether the window lost focus during a previous traversal and has not 204 * yet gained it back. Used to determine whether a WINDOW_STATE_CHANGE 205 * accessibility events should be sent during traversal. 206 */ 207 boolean mLostWindowFocus; 208 209 // Set to true if the owner of this window is in the stopped state, 210 // so the window should no longer be active. 211 boolean mStopped = false; 212 213 // Set to true if the owner of this window is in ambient mode, 214 // which means it won't receive input events. 215 boolean mIsAmbientMode = false; 216 217 // Set to true to stop input during an Activity Transition. 218 boolean mPausedForTransition = false; 219 220 boolean mLastInCompatMode = false; 221 222 SurfaceHolder.Callback2 mSurfaceHolderCallback; 223 BaseSurfaceHolder mSurfaceHolder; 224 boolean mIsCreating; 225 boolean mDrawingAllowed; 226 227 final Region mTransparentRegion; 228 final Region mPreviousTransparentRegion; 229 230 int mWidth; 231 int mHeight; 232 Rect mDirty; 233 boolean mIsAnimating; 234 235 private boolean mDragResizing; 236 private int mResizeMode; 237 private int mCanvasOffsetX; 238 private int mCanvasOffsetY; 239 private boolean mActivityRelaunched; 240 241 CompatibilityInfo.Translator mTranslator; 242 243 final View.AttachInfo mAttachInfo; 244 InputChannel mInputChannel; 245 InputQueue.Callback mInputQueueCallback; 246 InputQueue mInputQueue; 247 FallbackEventHandler mFallbackEventHandler; 248 Choreographer mChoreographer; 249 250 final Rect mTempRect; // used in the transaction to not thrash the heap. 251 final Rect mVisRect; // used to retrieve visible rect of focused view. 252 253 boolean mTraversalScheduled; 254 int mTraversalBarrier; 255 boolean mWillDrawSoon; 256 /** Set to true while in performTraversals for detecting when die(true) is called from internal 257 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 258 boolean mIsInTraversal; 259 boolean mApplyInsetsRequested; 260 boolean mLayoutRequested; 261 boolean mFirst; 262 boolean mReportNextDraw; 263 boolean mFullRedrawNeeded; 264 boolean mNewSurfaceNeeded; 265 boolean mHasHadWindowFocus; 266 boolean mLastWasImTarget; 267 boolean mForceNextWindowRelayout; 268 CountDownLatch mWindowDrawCountDown; 269 270 boolean mIsDrawing; 271 int mLastSystemUiVisibility; 272 int mClientWindowLayoutFlags; 273 boolean mLastOverscanRequested; 274 275 // Pool of queued input events. 276 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 277 private QueuedInputEvent mQueuedInputEventPool; 278 private int mQueuedInputEventPoolSize; 279 280 /* Input event queue. 281 * Pending input events are input events waiting to be delivered to the input stages 282 * and handled by the application. 283 */ 284 QueuedInputEvent mPendingInputEventHead; 285 QueuedInputEvent mPendingInputEventTail; 286 int mPendingInputEventCount; 287 boolean mProcessInputEventsScheduled; 288 boolean mUnbufferedInputDispatch; 289 String mPendingInputEventQueueLengthCounterName = "pq"; 290 291 InputStage mFirstInputStage; 292 InputStage mFirstPostImeInputStage; 293 InputStage mSyntheticInputStage; 294 295 boolean mWindowAttributesChanged = false; 296 int mWindowAttributesChangesFlag = 0; 297 298 // These can be accessed by any thread, must be protected with a lock. 299 // Surface can never be reassigned or cleared (use Surface.clear()). 300 final Surface mSurface = new Surface(); 301 302 boolean mAdded; 303 boolean mAddedTouchMode; 304 305 final DisplayAdjustments mDisplayAdjustments; 306 307 // These are accessed by multiple threads. 308 final Rect mWinFrame; // frame given by window manager. 309 310 final Rect mPendingOverscanInsets = new Rect(); 311 final Rect mPendingVisibleInsets = new Rect(); 312 final Rect mPendingStableInsets = new Rect(); 313 final Rect mPendingContentInsets = new Rect(); 314 final Rect mPendingOutsets = new Rect(); 315 final Rect mPendingBackDropFrame = new Rect(); 316 boolean mPendingAlwaysConsumeNavBar; 317 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 318 = new ViewTreeObserver.InternalInsetsInfo(); 319 320 final Rect mDispatchContentInsets = new Rect(); 321 final Rect mDispatchStableInsets = new Rect(); 322 323 private WindowInsets mLastWindowInsets; 324 325 final Configuration mLastConfiguration = new Configuration(); 326 final Configuration mPendingConfiguration = new Configuration(); 327 328 boolean mScrollMayChange; 329 int mSoftInputMode; 330 WeakReference<View> mLastScrolledFocus; 331 int mScrollY; 332 int mCurScrollY; 333 Scroller mScroller; 334 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 335 private ArrayList<LayoutTransition> mPendingTransitions; 336 337 final ViewConfiguration mViewConfiguration; 338 339 /* Drag/drop */ 340 ClipDescription mDragDescription; 341 View mCurrentDragView; 342 volatile Object mLocalDragState; 343 final PointF mDragPoint = new PointF(); 344 final PointF mLastTouchPoint = new PointF(); 345 int mLastTouchSource; 346 347 private boolean mProfileRendering; 348 private Choreographer.FrameCallback mRenderProfiler; 349 private boolean mRenderProfilingEnabled; 350 351 // Variables to track frames per second, enabled via DEBUG_FPS flag 352 private long mFpsStartTime = -1; 353 private long mFpsPrevTime = -1; 354 private int mFpsNumFrames; 355 356 private int mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 357 private PointerIcon mCustomPointerIcon = null; 358 359 /** 360 * see {@link #playSoundEffect(int)} 361 */ 362 AudioManager mAudioManager; 363 364 final AccessibilityManager mAccessibilityManager; 365 366 AccessibilityInteractionController mAccessibilityInteractionController; 367 368 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 369 HighContrastTextManager mHighContrastTextManager; 370 371 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 372 373 HashSet<View> mTempHashSet; 374 375 private final int mDensity; 376 private final int mNoncompatDensity; 377 378 private boolean mInLayout = false; 379 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 380 boolean mHandlingLayoutInLayoutRequest = false; 381 382 private int mViewLayoutDirectionInitial; 383 384 /** Set to true once doDie() has been called. */ 385 private boolean mRemoved; 386 387 /** 388 * Consistency verifier for debugging purposes. 389 */ 390 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 391 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 392 new InputEventConsistencyVerifier(this, 0) : null; 393 394 static final class SystemUiVisibilityInfo { 395 int seq; 396 int globalVisibility; 397 int localValue; 398 int localChanges; 399 } 400 401 private String mTag = TAG; 402 403 public ViewRootImpl(Context context, Display display) { 404 mContext = context; 405 mWindowSession = WindowManagerGlobal.getWindowSession(); 406 mDisplay = display; 407 mBasePackageName = context.getBasePackageName(); 408 409 mDisplayAdjustments = display.getDisplayAdjustments(); 410 411 mThread = Thread.currentThread(); 412 mLocation = new WindowLeaked(null); 413 mLocation.fillInStackTrace(); 414 mWidth = -1; 415 mHeight = -1; 416 mDirty = new Rect(); 417 mTempRect = new Rect(); 418 mVisRect = new Rect(); 419 mWinFrame = new Rect(); 420 mWindow = new W(this); 421 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 422 mViewVisibility = View.GONE; 423 mTransparentRegion = new Region(); 424 mPreviousTransparentRegion = new Region(); 425 mFirst = true; // true for the first time the view is added 426 mAdded = false; 427 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 428 mAccessibilityManager = AccessibilityManager.getInstance(context); 429 mAccessibilityInteractionConnectionManager = 430 new AccessibilityInteractionConnectionManager(); 431 mAccessibilityManager.addAccessibilityStateChangeListener( 432 mAccessibilityInteractionConnectionManager); 433 mHighContrastTextManager = new HighContrastTextManager(); 434 mAccessibilityManager.addHighTextContrastStateChangeListener( 435 mHighContrastTextManager); 436 mViewConfiguration = ViewConfiguration.get(context); 437 mDensity = context.getResources().getDisplayMetrics().densityDpi; 438 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 439 mFallbackEventHandler = new PhoneFallbackEventHandler(context); 440 mChoreographer = Choreographer.getInstance(); 441 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 442 loadSystemProperties(); 443 } 444 445 public static void addFirstDrawHandler(Runnable callback) { 446 synchronized (sFirstDrawHandlers) { 447 if (!sFirstDrawComplete) { 448 sFirstDrawHandlers.add(callback); 449 } 450 } 451 } 452 453 public static void addConfigCallback(ComponentCallbacks callback) { 454 synchronized (sConfigCallbacks) { 455 sConfigCallbacks.add(callback); 456 } 457 } 458 459 public void addWindowCallbacks(WindowCallbacks callback) { 460 if (USE_MT_RENDERER) { 461 synchronized (mWindowCallbacks) { 462 mWindowCallbacks.add(callback); 463 } 464 } 465 } 466 467 public void removeWindowCallbacks(WindowCallbacks callback) { 468 if (USE_MT_RENDERER) { 469 synchronized (mWindowCallbacks) { 470 mWindowCallbacks.remove(callback); 471 } 472 } 473 } 474 475 public void reportDrawFinish() { 476 if (mWindowDrawCountDown != null) { 477 mWindowDrawCountDown.countDown(); 478 } 479 } 480 481 // FIXME for perf testing only 482 private boolean mProfile = false; 483 484 /** 485 * Call this to profile the next traversal call. 486 * FIXME for perf testing only. Remove eventually 487 */ 488 public void profile() { 489 mProfile = true; 490 } 491 492 /** 493 * Indicates whether we are in touch mode. Calling this method triggers an IPC 494 * call and should be avoided whenever possible. 495 * 496 * @return True, if the device is in touch mode, false otherwise. 497 * 498 * @hide 499 */ 500 static boolean isInTouchMode() { 501 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 502 if (windowSession != null) { 503 try { 504 return windowSession.getInTouchMode(); 505 } catch (RemoteException e) { 506 } 507 } 508 return false; 509 } 510 511 /** 512 * We have one child 513 */ 514 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 515 synchronized (this) { 516 if (mView == null) { 517 mView = view; 518 519 mAttachInfo.mDisplayState = mDisplay.getState(); 520 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 521 522 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 523 mFallbackEventHandler.setView(view); 524 mWindowAttributes.copyFrom(attrs); 525 if (mWindowAttributes.packageName == null) { 526 mWindowAttributes.packageName = mBasePackageName; 527 } 528 attrs = mWindowAttributes; 529 setTag(); 530 // Keep track of the actual window flags supplied by the client. 531 mClientWindowLayoutFlags = attrs.flags; 532 533 setAccessibilityFocus(null, null); 534 535 if (view instanceof RootViewSurfaceTaker) { 536 mSurfaceHolderCallback = 537 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 538 if (mSurfaceHolderCallback != null) { 539 mSurfaceHolder = new TakenSurfaceHolder(); 540 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 541 } 542 } 543 544 // Compute surface insets required to draw at specified Z value. 545 // TODO: Use real shadow insets for a constant max Z. 546 if (!attrs.hasManualSurfaceInsets) { 547 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 548 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 549 } 550 551 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 552 mTranslator = compatibilityInfo.getTranslator(); 553 554 // If the application owns the surface, don't enable hardware acceleration 555 if (mSurfaceHolder == null) { 556 enableHardwareAcceleration(attrs); 557 } 558 559 boolean restore = false; 560 if (mTranslator != null) { 561 mSurface.setCompatibilityTranslator(mTranslator); 562 restore = true; 563 attrs.backup(); 564 mTranslator.translateWindowLayout(attrs); 565 } 566 if (DEBUG_LAYOUT) Log.d(mTag, "WindowLayout in setView:" + attrs); 567 568 if (!compatibilityInfo.supportsScreen()) { 569 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 570 mLastInCompatMode = true; 571 } 572 573 mSoftInputMode = attrs.softInputMode; 574 mWindowAttributesChanged = true; 575 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 576 mAttachInfo.mRootView = view; 577 mAttachInfo.mScalingRequired = mTranslator != null; 578 mAttachInfo.mApplicationScale = 579 mTranslator == null ? 1.0f : mTranslator.applicationScale; 580 if (panelParentView != null) { 581 mAttachInfo.mPanelParentWindowToken 582 = panelParentView.getApplicationWindowToken(); 583 } 584 mAdded = true; 585 int res; /* = WindowManagerImpl.ADD_OKAY; */ 586 587 // Schedule the first layout -before- adding to the window 588 // manager, to make sure we do the relayout before receiving 589 // any other events from the system. 590 requestLayout(); 591 if ((mWindowAttributes.inputFeatures 592 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 593 mInputChannel = new InputChannel(); 594 } 595 mForceDecorViewVisibility = (mWindowAttributes.privateFlags 596 & PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY) != 0; 597 try { 598 mOrigWindowType = mWindowAttributes.type; 599 mAttachInfo.mRecomputeGlobalAttributes = true; 600 collectViewAttributes(); 601 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 602 getHostVisibility(), mDisplay.getDisplayId(), 603 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, 604 mAttachInfo.mOutsets, mInputChannel); 605 } catch (RemoteException e) { 606 mAdded = false; 607 mView = null; 608 mAttachInfo.mRootView = null; 609 mInputChannel = null; 610 mFallbackEventHandler.setView(null); 611 unscheduleTraversals(); 612 setAccessibilityFocus(null, null); 613 throw new RuntimeException("Adding window failed", e); 614 } finally { 615 if (restore) { 616 attrs.restore(); 617 } 618 } 619 620 if (mTranslator != null) { 621 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 622 } 623 mPendingOverscanInsets.set(0, 0, 0, 0); 624 mPendingContentInsets.set(mAttachInfo.mContentInsets); 625 mPendingStableInsets.set(mAttachInfo.mStableInsets); 626 mPendingVisibleInsets.set(0, 0, 0, 0); 627 mAttachInfo.mAlwaysConsumeNavBar = 628 (res & WindowManagerGlobal.ADD_FLAG_ALWAYS_CONSUME_NAV_BAR) != 0; 629 mPendingAlwaysConsumeNavBar = mAttachInfo.mAlwaysConsumeNavBar; 630 if (DEBUG_LAYOUT) Log.v(mTag, "Added window " + mWindow); 631 if (res < WindowManagerGlobal.ADD_OKAY) { 632 mAttachInfo.mRootView = null; 633 mAdded = false; 634 mFallbackEventHandler.setView(null); 635 unscheduleTraversals(); 636 setAccessibilityFocus(null, null); 637 switch (res) { 638 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 639 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 640 throw new WindowManager.BadTokenException( 641 "Unable to add window -- token " + attrs.token 642 + " is not valid; is your activity running?"); 643 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 644 throw new WindowManager.BadTokenException( 645 "Unable to add window -- token " + attrs.token 646 + " is not for an application"); 647 case WindowManagerGlobal.ADD_APP_EXITING: 648 throw new WindowManager.BadTokenException( 649 "Unable to add window -- app for token " + attrs.token 650 + " is exiting"); 651 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 652 throw new WindowManager.BadTokenException( 653 "Unable to add window -- window " + mWindow 654 + " has already been added"); 655 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 656 // Silently ignore -- we would have just removed it 657 // right away, anyway. 658 return; 659 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 660 throw new WindowManager.BadTokenException("Unable to add window " 661 + mWindow + " -- another window of type " 662 + mWindowAttributes.type + " already exists"); 663 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 664 throw new WindowManager.BadTokenException("Unable to add window " 665 + mWindow + " -- permission denied for window type " 666 + mWindowAttributes.type); 667 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 668 throw new WindowManager.InvalidDisplayException("Unable to add window " 669 + mWindow + " -- the specified display can not be found"); 670 case WindowManagerGlobal.ADD_INVALID_TYPE: 671 throw new WindowManager.InvalidDisplayException("Unable to add window " 672 + mWindow + " -- the specified window type " 673 + mWindowAttributes.type + " is not valid"); 674 } 675 throw new RuntimeException( 676 "Unable to add window -- unknown error code " + res); 677 } 678 679 if (view instanceof RootViewSurfaceTaker) { 680 mInputQueueCallback = 681 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 682 } 683 if (mInputChannel != null) { 684 if (mInputQueueCallback != null) { 685 mInputQueue = new InputQueue(); 686 mInputQueueCallback.onInputQueueCreated(mInputQueue); 687 } 688 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 689 Looper.myLooper()); 690 } 691 692 view.assignParent(this); 693 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 694 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 695 696 if (mAccessibilityManager.isEnabled()) { 697 mAccessibilityInteractionConnectionManager.ensureConnection(); 698 } 699 700 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 701 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 702 } 703 704 // Set up the input pipeline. 705 CharSequence counterSuffix = attrs.getTitle(); 706 mSyntheticInputStage = new SyntheticInputStage(); 707 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 708 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 709 "aq:native-post-ime:" + counterSuffix); 710 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 711 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 712 "aq:ime:" + counterSuffix); 713 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 714 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 715 "aq:native-pre-ime:" + counterSuffix); 716 717 mFirstInputStage = nativePreImeStage; 718 mFirstPostImeInputStage = earlyPostImeStage; 719 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 720 } 721 } 722 } 723 724 private void setTag() { 725 final String[] split = mWindowAttributes.getTitle().toString().split("\\."); 726 if (split.length > 0) { 727 mTag = TAG + "[" + split[split.length - 1] + "]"; 728 } 729 } 730 731 /** Whether the window is in local focus mode or not */ 732 private boolean isInLocalFocusMode() { 733 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 734 } 735 736 public int getWindowFlags() { 737 return mWindowAttributes.flags; 738 } 739 740 public int getDisplayId() { 741 return mDisplay.getDisplayId(); 742 } 743 744 public CharSequence getTitle() { 745 return mWindowAttributes.getTitle(); 746 } 747 748 void destroyHardwareResources() { 749 if (mAttachInfo.mHardwareRenderer != null) { 750 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 751 mAttachInfo.mHardwareRenderer.destroy(); 752 } 753 } 754 755 public void detachFunctor(long functor) { 756 if (mAttachInfo.mHardwareRenderer != null) { 757 // Fence so that any pending invokeFunctor() messages will be processed 758 // before we return from detachFunctor. 759 mAttachInfo.mHardwareRenderer.stopDrawing(); 760 } 761 } 762 763 /** 764 * Schedules the functor for execution in either kModeProcess or 765 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 766 * 767 * @param functor The native functor to invoke 768 * @param waitForCompletion If true, this will not return until the functor 769 * has invoked. If false, the functor may be invoked 770 * asynchronously. 771 */ 772 public void invokeFunctor(long functor, boolean waitForCompletion) { 773 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 774 } 775 776 public void registerAnimatingRenderNode(RenderNode animator) { 777 if (mAttachInfo.mHardwareRenderer != null) { 778 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 779 } else { 780 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 781 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 782 } 783 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 784 } 785 } 786 787 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 788 mAttachInfo.mHardwareAccelerated = false; 789 mAttachInfo.mHardwareAccelerationRequested = false; 790 791 // Don't enable hardware acceleration when the application is in compatibility mode 792 if (mTranslator != null) return; 793 794 // Try to enable hardware acceleration if requested 795 final boolean hardwareAccelerated = 796 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 797 798 if (hardwareAccelerated) { 799 if (!ThreadedRenderer.isAvailable()) { 800 return; 801 } 802 803 // Persistent processes (including the system) should not do 804 // accelerated rendering on low-end devices. In that case, 805 // sRendererDisabled will be set. In addition, the system process 806 // itself should never do accelerated rendering. In that case, both 807 // sRendererDisabled and sSystemRendererDisabled are set. When 808 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 809 // can be used by code on the system process to escape that and enable 810 // HW accelerated drawing. (This is basically for the lock screen.) 811 812 final boolean fakeHwAccelerated = (attrs.privateFlags & 813 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 814 final boolean forceHwAccelerated = (attrs.privateFlags & 815 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 816 817 if (fakeHwAccelerated) { 818 // This is exclusively for the preview windows the window manager 819 // shows for launching applications, so they will look more like 820 // the app being launched. 821 mAttachInfo.mHardwareAccelerationRequested = true; 822 } else if (!ThreadedRenderer.sRendererDisabled 823 || (ThreadedRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 824 if (mAttachInfo.mHardwareRenderer != null) { 825 mAttachInfo.mHardwareRenderer.destroy(); 826 } 827 828 final Rect insets = attrs.surfaceInsets; 829 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 830 || insets.top != 0 || insets.bottom != 0; 831 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 832 mAttachInfo.mHardwareRenderer = ThreadedRenderer.create(mContext, translucent); 833 if (mAttachInfo.mHardwareRenderer != null) { 834 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 835 mAttachInfo.mHardwareAccelerated = 836 mAttachInfo.mHardwareAccelerationRequested = true; 837 } 838 } 839 } 840 } 841 842 public View getView() { 843 return mView; 844 } 845 846 final WindowLeaked getLocation() { 847 return mLocation; 848 } 849 850 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 851 synchronized (this) { 852 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 853 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 854 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 855 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 856 final int oldSoftInputMode = mWindowAttributes.softInputMode; 857 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 858 859 // Keep track of the actual window flags supplied by the client. 860 mClientWindowLayoutFlags = attrs.flags; 861 862 // Preserve compatible window flag if exists. 863 final int compatibleWindowFlag = mWindowAttributes.privateFlags 864 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 865 866 // Transfer over system UI visibility values as they carry current state. 867 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 868 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 869 870 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 871 if ((mWindowAttributesChangesFlag 872 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 873 // Recompute system ui visibility. 874 mAttachInfo.mRecomputeGlobalAttributes = true; 875 } 876 if (mWindowAttributes.packageName == null) { 877 mWindowAttributes.packageName = mBasePackageName; 878 } 879 mWindowAttributes.privateFlags |= compatibleWindowFlag; 880 881 // Restore old surface insets. 882 mWindowAttributes.surfaceInsets.set( 883 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 884 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 885 886 applyKeepScreenOnFlag(mWindowAttributes); 887 888 if (newView) { 889 mSoftInputMode = attrs.softInputMode; 890 requestLayout(); 891 } 892 893 // Don't lose the mode we last auto-computed. 894 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 895 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 896 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 897 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 898 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 899 } 900 901 mWindowAttributesChanged = true; 902 scheduleTraversals(); 903 } 904 } 905 906 void handleAppVisibility(boolean visible) { 907 if (mAppVisible != visible) { 908 mAppVisible = visible; 909 scheduleTraversals(); 910 if (!mAppVisible) { 911 WindowManagerGlobal.trimForeground(); 912 } 913 } 914 } 915 916 void handleGetNewSurface() { 917 mNewSurfaceNeeded = true; 918 mFullRedrawNeeded = true; 919 scheduleTraversals(); 920 } 921 922 private final DisplayListener mDisplayListener = new DisplayListener() { 923 @Override 924 public void onDisplayChanged(int displayId) { 925 if (mView != null && mDisplay.getDisplayId() == displayId) { 926 final int oldDisplayState = mAttachInfo.mDisplayState; 927 final int newDisplayState = mDisplay.getState(); 928 if (oldDisplayState != newDisplayState) { 929 mAttachInfo.mDisplayState = newDisplayState; 930 pokeDrawLockIfNeeded(); 931 if (oldDisplayState != Display.STATE_UNKNOWN) { 932 final int oldScreenState = toViewScreenState(oldDisplayState); 933 final int newScreenState = toViewScreenState(newDisplayState); 934 if (oldScreenState != newScreenState) { 935 mView.dispatchScreenStateChanged(newScreenState); 936 } 937 if (oldDisplayState == Display.STATE_OFF) { 938 // Draw was suppressed so we need to for it to happen here. 939 mFullRedrawNeeded = true; 940 scheduleTraversals(); 941 } 942 } 943 } 944 } 945 } 946 947 @Override 948 public void onDisplayRemoved(int displayId) { 949 } 950 951 @Override 952 public void onDisplayAdded(int displayId) { 953 } 954 955 private int toViewScreenState(int displayState) { 956 return displayState == Display.STATE_OFF ? 957 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 958 } 959 }; 960 961 void pokeDrawLockIfNeeded() { 962 final int displayState = mAttachInfo.mDisplayState; 963 if (mView != null && mAdded && mTraversalScheduled 964 && (displayState == Display.STATE_DOZE 965 || displayState == Display.STATE_DOZE_SUSPEND)) { 966 try { 967 mWindowSession.pokeDrawLock(mWindow); 968 } catch (RemoteException ex) { 969 // System server died, oh well. 970 } 971 } 972 } 973 974 @Override 975 public void requestFitSystemWindows() { 976 checkThread(); 977 mApplyInsetsRequested = true; 978 scheduleTraversals(); 979 } 980 981 @Override 982 public void requestLayout() { 983 if (!mHandlingLayoutInLayoutRequest) { 984 checkThread(); 985 mLayoutRequested = true; 986 scheduleTraversals(); 987 } 988 } 989 990 @Override 991 public boolean isLayoutRequested() { 992 return mLayoutRequested; 993 } 994 995 void invalidate() { 996 mDirty.set(0, 0, mWidth, mHeight); 997 if (!mWillDrawSoon) { 998 scheduleTraversals(); 999 } 1000 } 1001 1002 void invalidateWorld(View view) { 1003 view.invalidate(); 1004 if (view instanceof ViewGroup) { 1005 ViewGroup parent = (ViewGroup) view; 1006 for (int i = 0; i < parent.getChildCount(); i++) { 1007 invalidateWorld(parent.getChildAt(i)); 1008 } 1009 } 1010 } 1011 1012 @Override 1013 public void invalidateChild(View child, Rect dirty) { 1014 invalidateChildInParent(null, dirty); 1015 } 1016 1017 @Override 1018 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 1019 checkThread(); 1020 if (DEBUG_DRAW) Log.v(mTag, "Invalidate child: " + dirty); 1021 1022 if (dirty == null) { 1023 invalidate(); 1024 return null; 1025 } else if (dirty.isEmpty() && !mIsAnimating) { 1026 return null; 1027 } 1028 1029 if (mCurScrollY != 0 || mTranslator != null) { 1030 mTempRect.set(dirty); 1031 dirty = mTempRect; 1032 if (mCurScrollY != 0) { 1033 dirty.offset(0, -mCurScrollY); 1034 } 1035 if (mTranslator != null) { 1036 mTranslator.translateRectInAppWindowToScreen(dirty); 1037 } 1038 if (mAttachInfo.mScalingRequired) { 1039 dirty.inset(-1, -1); 1040 } 1041 } 1042 1043 invalidateRectOnScreen(dirty); 1044 1045 return null; 1046 } 1047 1048 private void invalidateRectOnScreen(Rect dirty) { 1049 final Rect localDirty = mDirty; 1050 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 1051 mAttachInfo.mSetIgnoreDirtyState = true; 1052 mAttachInfo.mIgnoreDirtyState = true; 1053 } 1054 1055 // Add the new dirty rect to the current one 1056 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 1057 // Intersect with the bounds of the window to skip 1058 // updates that lie outside of the visible region 1059 final float appScale = mAttachInfo.mApplicationScale; 1060 final boolean intersected = localDirty.intersect(0, 0, 1061 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 1062 if (!intersected) { 1063 localDirty.setEmpty(); 1064 } 1065 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 1066 scheduleTraversals(); 1067 } 1068 } 1069 1070 public void setIsAmbientMode(boolean ambient) { 1071 mIsAmbientMode = ambient; 1072 } 1073 1074 void setWindowStopped(boolean stopped) { 1075 if (mStopped != stopped) { 1076 mStopped = stopped; 1077 if (!mStopped) { 1078 scheduleTraversals(); 1079 } else { 1080 if (mAttachInfo.mHardwareRenderer != null) { 1081 if (DEBUG_DRAW) Log.d(mTag, "WindowStopped on " + getTitle()); 1082 mAttachInfo.mHardwareRenderer.updateSurface(null); 1083 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 1084 } 1085 } 1086 } 1087 } 1088 1089 /** 1090 * Block the input events during an Activity Transition. The KEYCODE_BACK event is allowed 1091 * through to allow quick reversal of the Activity Transition. 1092 * 1093 * @param paused true to pause, false to resume. 1094 */ 1095 public void setPausedForTransition(boolean paused) { 1096 mPausedForTransition = paused; 1097 } 1098 1099 @Override 1100 public ViewParent getParent() { 1101 return null; 1102 } 1103 1104 @Override 1105 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 1106 if (child != mView) { 1107 throw new RuntimeException("child is not mine, honest!"); 1108 } 1109 // Note: don't apply scroll offset, because we want to know its 1110 // visibility in the virtual canvas being given to the view hierarchy. 1111 return r.intersect(0, 0, mWidth, mHeight); 1112 } 1113 1114 @Override 1115 public void bringChildToFront(View child) { 1116 } 1117 1118 int getHostVisibility() { 1119 return (mAppVisible || mForceDecorViewVisibility) ? mView.getVisibility() : View.GONE; 1120 } 1121 1122 /** 1123 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1124 * This list will be cleared after the transitions on the list are start()'ed. These 1125 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1126 * happens during the layout phase of traversal, which we want to complete before any of the 1127 * animations are started (because those animations may side-effect properties that layout 1128 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1129 * to the list and it is started just prior to starting the drawing phase of traversal. 1130 * 1131 * @param transition The LayoutTransition to be started on the next traversal. 1132 * 1133 * @hide 1134 */ 1135 public void requestTransitionStart(LayoutTransition transition) { 1136 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1137 if (mPendingTransitions == null) { 1138 mPendingTransitions = new ArrayList<LayoutTransition>(); 1139 } 1140 mPendingTransitions.add(transition); 1141 } 1142 } 1143 1144 /** 1145 * Notifies the HardwareRenderer that a new frame will be coming soon. 1146 * Currently only {@link ThreadedRenderer} cares about this, and uses 1147 * this knowledge to adjust the scheduling of off-thread animations 1148 */ 1149 void notifyRendererOfFramePending() { 1150 if (mAttachInfo.mHardwareRenderer != null) { 1151 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1152 } 1153 } 1154 1155 void scheduleTraversals() { 1156 if (!mTraversalScheduled) { 1157 mTraversalScheduled = true; 1158 mTraversalBarrier = mHandler.getLooper().getQueue().postSyncBarrier(); 1159 mChoreographer.postCallback( 1160 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1161 if (!mUnbufferedInputDispatch) { 1162 scheduleConsumeBatchedInput(); 1163 } 1164 notifyRendererOfFramePending(); 1165 pokeDrawLockIfNeeded(); 1166 } 1167 } 1168 1169 void unscheduleTraversals() { 1170 if (mTraversalScheduled) { 1171 mTraversalScheduled = false; 1172 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1173 mChoreographer.removeCallbacks( 1174 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1175 } 1176 } 1177 1178 void doTraversal() { 1179 if (mTraversalScheduled) { 1180 mTraversalScheduled = false; 1181 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1182 1183 if (mProfile) { 1184 Debug.startMethodTracing("ViewAncestor"); 1185 } 1186 1187 performTraversals(); 1188 1189 if (mProfile) { 1190 Debug.stopMethodTracing(); 1191 mProfile = false; 1192 } 1193 } 1194 } 1195 1196 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1197 // Update window's global keep screen on flag: if a view has requested 1198 // that the screen be kept on, then it is always set; otherwise, it is 1199 // set to whatever the client last requested for the global state. 1200 if (mAttachInfo.mKeepScreenOn) { 1201 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1202 } else { 1203 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1204 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1205 } 1206 } 1207 1208 private boolean collectViewAttributes() { 1209 if (mAttachInfo.mRecomputeGlobalAttributes) { 1210 //Log.i(mTag, "Computing view hierarchy attributes!"); 1211 mAttachInfo.mRecomputeGlobalAttributes = false; 1212 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1213 mAttachInfo.mKeepScreenOn = false; 1214 mAttachInfo.mSystemUiVisibility = 0; 1215 mAttachInfo.mHasSystemUiListeners = false; 1216 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1217 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1218 WindowManager.LayoutParams params = mWindowAttributes; 1219 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1220 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1221 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1222 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1223 applyKeepScreenOnFlag(params); 1224 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1225 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1226 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1227 return true; 1228 } 1229 } 1230 return false; 1231 } 1232 1233 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1234 int vis = 0; 1235 // Translucent decor window flags imply stable system ui visibility. 1236 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1237 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1238 } 1239 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1240 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1241 } 1242 return vis; 1243 } 1244 1245 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1246 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1247 int childWidthMeasureSpec; 1248 int childHeightMeasureSpec; 1249 boolean windowSizeMayChange = false; 1250 1251 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(mTag, 1252 "Measuring " + host + " in display " + desiredWindowWidth 1253 + "x" + desiredWindowHeight + "..."); 1254 1255 boolean goodMeasure = false; 1256 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1257 // On large screens, we don't want to allow dialogs to just 1258 // stretch to fill the entire width of the screen to display 1259 // one line of text. First try doing the layout at a smaller 1260 // size to see if it will fit. 1261 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1262 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1263 int baseSize = 0; 1264 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1265 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1266 } 1267 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": baseSize=" + baseSize 1268 + ", desiredWindowWidth=" + desiredWindowWidth); 1269 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1270 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1271 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1272 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1273 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1274 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() 1275 + ") from width spec: " + MeasureSpec.toString(childWidthMeasureSpec) 1276 + " and height spec: " + MeasureSpec.toString(childHeightMeasureSpec)); 1277 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1278 goodMeasure = true; 1279 } else { 1280 // Didn't fit in that size... try expanding a bit. 1281 baseSize = (baseSize+desiredWindowWidth)/2; 1282 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": next baseSize=" 1283 + baseSize); 1284 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1285 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1286 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1287 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1288 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1289 if (DEBUG_DIALOG) Log.v(mTag, "Good!"); 1290 goodMeasure = true; 1291 } 1292 } 1293 } 1294 } 1295 1296 if (!goodMeasure) { 1297 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1298 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1299 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1300 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1301 windowSizeMayChange = true; 1302 } 1303 } 1304 1305 if (DBG) { 1306 System.out.println("======================================"); 1307 System.out.println("performTraversals -- after measure"); 1308 host.debug(); 1309 } 1310 1311 return windowSizeMayChange; 1312 } 1313 1314 /** 1315 * Modifies the input matrix such that it maps view-local coordinates to 1316 * on-screen coordinates. 1317 * 1318 * @param m input matrix to modify 1319 */ 1320 void transformMatrixToGlobal(Matrix m) { 1321 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1322 } 1323 1324 /** 1325 * Modifies the input matrix such that it maps on-screen coordinates to 1326 * view-local coordinates. 1327 * 1328 * @param m input matrix to modify 1329 */ 1330 void transformMatrixToLocal(Matrix m) { 1331 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1332 } 1333 1334 /* package */ WindowInsets getWindowInsets(boolean forceConstruct) { 1335 if (mLastWindowInsets == null || forceConstruct) { 1336 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1337 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1338 Rect contentInsets = mDispatchContentInsets; 1339 Rect stableInsets = mDispatchStableInsets; 1340 // For dispatch we preserve old logic, but for direct requests from Views we allow to 1341 // immediately use pending insets. 1342 if (!forceConstruct 1343 && (!mPendingContentInsets.equals(contentInsets) || 1344 !mPendingStableInsets.equals(stableInsets))) { 1345 contentInsets = mPendingContentInsets; 1346 stableInsets = mPendingStableInsets; 1347 } 1348 Rect outsets = mAttachInfo.mOutsets; 1349 if (outsets.left > 0 || outsets.top > 0 || outsets.right > 0 || outsets.bottom > 0) { 1350 contentInsets = new Rect(contentInsets.left + outsets.left, 1351 contentInsets.top + outsets.top, contentInsets.right + outsets.right, 1352 contentInsets.bottom + outsets.bottom); 1353 } 1354 mLastWindowInsets = new WindowInsets(contentInsets, 1355 null /* windowDecorInsets */, stableInsets, 1356 mContext.getResources().getConfiguration().isScreenRound(), 1357 mAttachInfo.mAlwaysConsumeNavBar); 1358 } 1359 return mLastWindowInsets; 1360 } 1361 1362 void dispatchApplyInsets(View host) { 1363 host.dispatchApplyWindowInsets(getWindowInsets(true /* forceConstruct */)); 1364 } 1365 1366 private static boolean shouldUseDisplaySize(final WindowManager.LayoutParams lp) { 1367 return lp.type == TYPE_STATUS_BAR_PANEL 1368 || lp.type == TYPE_INPUT_METHOD 1369 || lp.type == TYPE_VOLUME_OVERLAY; 1370 } 1371 1372 private int dipToPx(int dip) { 1373 final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics(); 1374 return (int) (displayMetrics.density * dip + 0.5f); 1375 } 1376 1377 private void performTraversals() { 1378 // cache mView since it is used so much below... 1379 final View host = mView; 1380 1381 if (DBG) { 1382 System.out.println("======================================"); 1383 System.out.println("performTraversals"); 1384 host.debug(); 1385 } 1386 1387 if (host == null || !mAdded) 1388 return; 1389 1390 mIsInTraversal = true; 1391 mWillDrawSoon = true; 1392 boolean windowSizeMayChange = false; 1393 boolean newSurface = false; 1394 boolean surfaceChanged = false; 1395 WindowManager.LayoutParams lp = mWindowAttributes; 1396 1397 int desiredWindowWidth; 1398 int desiredWindowHeight; 1399 1400 final int viewVisibility = getHostVisibility(); 1401 final boolean viewVisibilityChanged = !mFirst 1402 && (mViewVisibility != viewVisibility || mNewSurfaceNeeded); 1403 1404 WindowManager.LayoutParams params = null; 1405 if (mWindowAttributesChanged) { 1406 mWindowAttributesChanged = false; 1407 surfaceChanged = true; 1408 params = lp; 1409 } 1410 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1411 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1412 params = lp; 1413 mFullRedrawNeeded = true; 1414 mLayoutRequested = true; 1415 if (mLastInCompatMode) { 1416 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1417 mLastInCompatMode = false; 1418 } else { 1419 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1420 mLastInCompatMode = true; 1421 } 1422 } 1423 1424 mWindowAttributesChangesFlag = 0; 1425 1426 Rect frame = mWinFrame; 1427 if (mFirst) { 1428 mFullRedrawNeeded = true; 1429 mLayoutRequested = true; 1430 1431 if (shouldUseDisplaySize(lp)) { 1432 // NOTE -- system code, won't try to do compat mode. 1433 Point size = new Point(); 1434 mDisplay.getRealSize(size); 1435 desiredWindowWidth = size.x; 1436 desiredWindowHeight = size.y; 1437 } else { 1438 Configuration config = mContext.getResources().getConfiguration(); 1439 desiredWindowWidth = dipToPx(config.screenWidthDp); 1440 desiredWindowHeight = dipToPx(config.screenHeightDp); 1441 } 1442 1443 // We used to use the following condition to choose 32 bits drawing caches: 1444 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1445 // However, windows are now always 32 bits by default, so choose 32 bits 1446 mAttachInfo.mUse32BitDrawingCache = true; 1447 mAttachInfo.mHasWindowFocus = false; 1448 mAttachInfo.mWindowVisibility = viewVisibility; 1449 mAttachInfo.mRecomputeGlobalAttributes = false; 1450 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1451 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1452 // Set the layout direction if it has not been set before (inherit is the default) 1453 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1454 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1455 } 1456 host.dispatchAttachedToWindow(mAttachInfo, 0); 1457 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1458 dispatchApplyInsets(host); 1459 //Log.i(mTag, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1460 1461 } else { 1462 desiredWindowWidth = frame.width(); 1463 desiredWindowHeight = frame.height(); 1464 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1465 if (DEBUG_ORIENTATION) Log.v(mTag, "View " + host + " resized to: " + frame); 1466 mFullRedrawNeeded = true; 1467 mLayoutRequested = true; 1468 windowSizeMayChange = true; 1469 } 1470 } 1471 1472 if (viewVisibilityChanged) { 1473 mAttachInfo.mWindowVisibility = viewVisibility; 1474 host.dispatchWindowVisibilityChanged(viewVisibility); 1475 host.dispatchVisibilityAggregated(viewVisibility == View.VISIBLE); 1476 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1477 endDragResizing(); 1478 destroyHardwareResources(); 1479 } 1480 if (viewVisibility == View.GONE) { 1481 // After making a window gone, we will count it as being 1482 // shown for the first time the next time it gets focus. 1483 mHasHadWindowFocus = false; 1484 } 1485 } 1486 1487 // Non-visible windows can't hold accessibility focus. 1488 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1489 host.clearAccessibilityFocus(); 1490 } 1491 1492 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1493 getRunQueue().executeActions(mAttachInfo.mHandler); 1494 1495 boolean insetsChanged = false; 1496 1497 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1498 if (layoutRequested) { 1499 1500 final Resources res = mView.getContext().getResources(); 1501 1502 if (mFirst) { 1503 // make sure touch mode code executes by setting cached value 1504 // to opposite of the added touch mode. 1505 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1506 ensureTouchModeLocally(mAddedTouchMode); 1507 } else { 1508 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1509 insetsChanged = true; 1510 } 1511 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1512 insetsChanged = true; 1513 } 1514 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1515 insetsChanged = true; 1516 } 1517 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1518 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1519 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1520 + mAttachInfo.mVisibleInsets); 1521 } 1522 if (!mPendingOutsets.equals(mAttachInfo.mOutsets)) { 1523 insetsChanged = true; 1524 } 1525 if (mPendingAlwaysConsumeNavBar != mAttachInfo.mAlwaysConsumeNavBar) { 1526 insetsChanged = true; 1527 } 1528 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1529 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1530 windowSizeMayChange = true; 1531 1532 if (shouldUseDisplaySize(lp)) { 1533 // NOTE -- system code, won't try to do compat mode. 1534 Point size = new Point(); 1535 mDisplay.getRealSize(size); 1536 desiredWindowWidth = size.x; 1537 desiredWindowHeight = size.y; 1538 } else { 1539 Configuration config = res.getConfiguration(); 1540 desiredWindowWidth = dipToPx(config.screenWidthDp); 1541 desiredWindowHeight = dipToPx(config.screenHeightDp); 1542 } 1543 } 1544 } 1545 1546 // Ask host how big it wants to be 1547 windowSizeMayChange |= measureHierarchy(host, lp, res, 1548 desiredWindowWidth, desiredWindowHeight); 1549 } 1550 1551 if (collectViewAttributes()) { 1552 params = lp; 1553 } 1554 if (mAttachInfo.mForceReportNewAttributes) { 1555 mAttachInfo.mForceReportNewAttributes = false; 1556 params = lp; 1557 } 1558 1559 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1560 mAttachInfo.mViewVisibilityChanged = false; 1561 int resizeMode = mSoftInputMode & 1562 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1563 // If we are in auto resize mode, then we need to determine 1564 // what mode to use now. 1565 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1566 final int N = mAttachInfo.mScrollContainers.size(); 1567 for (int i=0; i<N; i++) { 1568 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1569 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1570 } 1571 } 1572 if (resizeMode == 0) { 1573 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1574 } 1575 if ((lp.softInputMode & 1576 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1577 lp.softInputMode = (lp.softInputMode & 1578 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1579 resizeMode; 1580 params = lp; 1581 } 1582 } 1583 } 1584 1585 if (params != null) { 1586 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1587 if (!PixelFormat.formatHasAlpha(params.format)) { 1588 params.format = PixelFormat.TRANSLUCENT; 1589 } 1590 } 1591 mAttachInfo.mOverscanRequested = (params.flags 1592 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1593 } 1594 1595 if (mApplyInsetsRequested) { 1596 mApplyInsetsRequested = false; 1597 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1598 dispatchApplyInsets(host); 1599 if (mLayoutRequested) { 1600 // Short-circuit catching a new layout request here, so 1601 // we don't need to go through two layout passes when things 1602 // change due to fitting system windows, which can happen a lot. 1603 windowSizeMayChange |= measureHierarchy(host, lp, 1604 mView.getContext().getResources(), 1605 desiredWindowWidth, desiredWindowHeight); 1606 } 1607 } 1608 1609 if (layoutRequested) { 1610 // Clear this now, so that if anything requests a layout in the 1611 // rest of this function we will catch it and re-run a full 1612 // layout pass. 1613 mLayoutRequested = false; 1614 } 1615 1616 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1617 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1618 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1619 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1620 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1621 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1622 windowShouldResize |= mDragResizing && mResizeMode == RESIZE_MODE_FREEFORM; 1623 1624 // If the activity was just relaunched, it might have unfrozen the task bounds (while 1625 // relaunching), so we need to force a call into window manager to pick up the latest 1626 // bounds. 1627 windowShouldResize |= mActivityRelaunched; 1628 1629 // Determine whether to compute insets. 1630 // If there are no inset listeners remaining then we may still need to compute 1631 // insets in case the old insets were non-empty and must be reset. 1632 final boolean computesInternalInsets = 1633 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1634 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1635 1636 boolean insetsPending = false; 1637 int relayoutResult = 0; 1638 1639 final boolean isViewVisible = viewVisibility == View.VISIBLE; 1640 if (mFirst || windowShouldResize || insetsChanged || 1641 viewVisibilityChanged || params != null || mForceNextWindowRelayout) { 1642 mForceNextWindowRelayout = false; 1643 1644 if (isViewVisible) { 1645 // If this window is giving internal insets to the window 1646 // manager, and it is being added or changing its visibility, 1647 // then we want to first give the window manager "fake" 1648 // insets to cause it to effectively ignore the content of 1649 // the window during layout. This avoids it briefly causing 1650 // other windows to resize/move based on the raw frame of the 1651 // window, waiting until we can finish laying out this window 1652 // and get back to the window manager with the ultimately 1653 // computed insets. 1654 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1655 } 1656 1657 if (mSurfaceHolder != null) { 1658 mSurfaceHolder.mSurfaceLock.lock(); 1659 mDrawingAllowed = true; 1660 } 1661 1662 boolean hwInitialized = false; 1663 boolean contentInsetsChanged = false; 1664 boolean hadSurface = mSurface.isValid(); 1665 1666 try { 1667 if (DEBUG_LAYOUT) { 1668 Log.i(mTag, "host=w:" + host.getMeasuredWidth() + ", h:" + 1669 host.getMeasuredHeight() + ", params=" + params); 1670 } 1671 1672 if (mAttachInfo.mHardwareRenderer != null) { 1673 // relayoutWindow may decide to destroy mSurface. As that decision 1674 // happens in WindowManager service, we need to be defensive here 1675 // and stop using the surface in case it gets destroyed. 1676 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1677 // Animations were running so we need to push a frame 1678 // to resume them 1679 mDirty.set(0, 0, mWidth, mHeight); 1680 } 1681 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1682 } 1683 final int surfaceGenerationId = mSurface.getGenerationId(); 1684 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1685 1686 if (DEBUG_LAYOUT) Log.v(mTag, "relayout: frame=" + frame.toShortString() 1687 + " overscan=" + mPendingOverscanInsets.toShortString() 1688 + " content=" + mPendingContentInsets.toShortString() 1689 + " visible=" + mPendingVisibleInsets.toShortString() 1690 + " visible=" + mPendingStableInsets.toShortString() 1691 + " outsets=" + mPendingOutsets.toShortString() 1692 + " surface=" + mSurface); 1693 1694 if (mPendingConfiguration.seq != 0) { 1695 if (DEBUG_CONFIGURATION) Log.v(mTag, "Visible with new config: " 1696 + mPendingConfiguration); 1697 updateConfiguration(new Configuration(mPendingConfiguration), !mFirst); 1698 mPendingConfiguration.seq = 0; 1699 } 1700 1701 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1702 mAttachInfo.mOverscanInsets); 1703 contentInsetsChanged = !mPendingContentInsets.equals( 1704 mAttachInfo.mContentInsets); 1705 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1706 mAttachInfo.mVisibleInsets); 1707 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1708 mAttachInfo.mStableInsets); 1709 final boolean outsetsChanged = !mPendingOutsets.equals(mAttachInfo.mOutsets); 1710 final boolean surfaceSizeChanged = (relayoutResult 1711 & WindowManagerGlobal.RELAYOUT_RES_SURFACE_RESIZED) != 0; 1712 final boolean alwaysConsumeNavBarChanged = 1713 mPendingAlwaysConsumeNavBar != mAttachInfo.mAlwaysConsumeNavBar; 1714 if (contentInsetsChanged) { 1715 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1716 if (DEBUG_LAYOUT) Log.v(mTag, "Content insets changing to: " 1717 + mAttachInfo.mContentInsets); 1718 } 1719 if (overscanInsetsChanged) { 1720 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1721 if (DEBUG_LAYOUT) Log.v(mTag, "Overscan insets changing to: " 1722 + mAttachInfo.mOverscanInsets); 1723 // Need to relayout with content insets. 1724 contentInsetsChanged = true; 1725 } 1726 if (stableInsetsChanged) { 1727 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1728 if (DEBUG_LAYOUT) Log.v(mTag, "Decor insets changing to: " 1729 + mAttachInfo.mStableInsets); 1730 // Need to relayout with content insets. 1731 contentInsetsChanged = true; 1732 } 1733 if (alwaysConsumeNavBarChanged) { 1734 mAttachInfo.mAlwaysConsumeNavBar = mPendingAlwaysConsumeNavBar; 1735 contentInsetsChanged = true; 1736 } 1737 if (contentInsetsChanged || mLastSystemUiVisibility != 1738 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1739 || mLastOverscanRequested != mAttachInfo.mOverscanRequested 1740 || outsetsChanged) { 1741 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1742 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1743 mAttachInfo.mOutsets.set(mPendingOutsets); 1744 mApplyInsetsRequested = false; 1745 dispatchApplyInsets(host); 1746 } 1747 if (visibleInsetsChanged) { 1748 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1749 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1750 + mAttachInfo.mVisibleInsets); 1751 } 1752 1753 if (!hadSurface) { 1754 if (mSurface.isValid()) { 1755 // If we are creating a new surface, then we need to 1756 // completely redraw it. Also, when we get to the 1757 // point of drawing it we will hold off and schedule 1758 // a new traversal instead. This is so we can tell the 1759 // window manager about all of the windows being displayed 1760 // before actually drawing them, so it can display then 1761 // all at once. 1762 newSurface = true; 1763 mFullRedrawNeeded = true; 1764 mPreviousTransparentRegion.setEmpty(); 1765 1766 // Only initialize up-front if transparent regions are not 1767 // requested, otherwise defer to see if the entire window 1768 // will be transparent 1769 if (mAttachInfo.mHardwareRenderer != null) { 1770 try { 1771 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1772 mSurface); 1773 if (hwInitialized && (host.mPrivateFlags 1774 & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) == 0) { 1775 // Don't pre-allocate if transparent regions 1776 // are requested as they may not be needed 1777 mSurface.allocateBuffers(); 1778 } 1779 } catch (OutOfResourcesException e) { 1780 handleOutOfResourcesException(e); 1781 return; 1782 } 1783 } 1784 } 1785 } else if (!mSurface.isValid()) { 1786 // If the surface has been removed, then reset the scroll 1787 // positions. 1788 if (mLastScrolledFocus != null) { 1789 mLastScrolledFocus.clear(); 1790 } 1791 mScrollY = mCurScrollY = 0; 1792 if (mView instanceof RootViewSurfaceTaker) { 1793 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1794 } 1795 if (mScroller != null) { 1796 mScroller.abortAnimation(); 1797 } 1798 // Our surface is gone 1799 if (mAttachInfo.mHardwareRenderer != null && 1800 mAttachInfo.mHardwareRenderer.isEnabled()) { 1801 mAttachInfo.mHardwareRenderer.destroy(); 1802 } 1803 } else if ((surfaceGenerationId != mSurface.getGenerationId() 1804 || surfaceSizeChanged) 1805 && mSurfaceHolder == null 1806 && mAttachInfo.mHardwareRenderer != null) { 1807 mFullRedrawNeeded = true; 1808 try { 1809 // Need to do updateSurface (which leads to CanvasContext::setSurface and 1810 // re-create the EGLSurface) if either the Surface changed (as indicated by 1811 // generation id), or WindowManager changed the surface size. The latter is 1812 // because on some chips, changing the consumer side's BufferQueue size may 1813 // not take effect immediately unless we create a new EGLSurface. 1814 // Note that frame size change doesn't always imply surface size change (eg. 1815 // drag resizing uses fullscreen surface), need to check surfaceSizeChanged 1816 // flag from WindowManager. 1817 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1818 } catch (OutOfResourcesException e) { 1819 handleOutOfResourcesException(e); 1820 return; 1821 } 1822 } 1823 1824 final boolean freeformResizing = (relayoutResult 1825 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_FREEFORM) != 0; 1826 final boolean dockedResizing = (relayoutResult 1827 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_DOCKED) != 0; 1828 final boolean dragResizing = freeformResizing || dockedResizing; 1829 if (mDragResizing != dragResizing) { 1830 if (dragResizing) { 1831 startDragResizing(mPendingBackDropFrame, 1832 mWinFrame.equals(mPendingBackDropFrame), mPendingVisibleInsets, 1833 mPendingStableInsets); 1834 mResizeMode = freeformResizing 1835 ? RESIZE_MODE_FREEFORM 1836 : RESIZE_MODE_DOCKED_DIVIDER; 1837 } else { 1838 // We shouldn't come here, but if we come we should end the resize. 1839 endDragResizing(); 1840 } 1841 } 1842 if (!USE_MT_RENDERER) { 1843 if (dragResizing) { 1844 mCanvasOffsetX = mWinFrame.left; 1845 mCanvasOffsetY = mWinFrame.top; 1846 } else { 1847 mCanvasOffsetX = mCanvasOffsetY = 0; 1848 } 1849 } 1850 } catch (RemoteException e) { 1851 } 1852 1853 if (DEBUG_ORIENTATION) Log.v( 1854 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1855 1856 mAttachInfo.mWindowLeft = frame.left; 1857 mAttachInfo.mWindowTop = frame.top; 1858 1859 // !!FIXME!! This next section handles the case where we did not get the 1860 // window size we asked for. We should avoid this by getting a maximum size from 1861 // the window session beforehand. 1862 if (mWidth != frame.width() || mHeight != frame.height()) { 1863 mWidth = frame.width(); 1864 mHeight = frame.height(); 1865 } 1866 1867 if (mSurfaceHolder != null) { 1868 // The app owns the surface; tell it about what is going on. 1869 if (mSurface.isValid()) { 1870 // XXX .copyFrom() doesn't work! 1871 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1872 mSurfaceHolder.mSurface = mSurface; 1873 } 1874 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1875 mSurfaceHolder.mSurfaceLock.unlock(); 1876 if (mSurface.isValid()) { 1877 if (!hadSurface) { 1878 mSurfaceHolder.ungetCallbacks(); 1879 1880 mIsCreating = true; 1881 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1882 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1883 if (callbacks != null) { 1884 for (SurfaceHolder.Callback c : callbacks) { 1885 c.surfaceCreated(mSurfaceHolder); 1886 } 1887 } 1888 surfaceChanged = true; 1889 } 1890 if (surfaceChanged) { 1891 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1892 lp.format, mWidth, mHeight); 1893 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1894 if (callbacks != null) { 1895 for (SurfaceHolder.Callback c : callbacks) { 1896 c.surfaceChanged(mSurfaceHolder, lp.format, 1897 mWidth, mHeight); 1898 } 1899 } 1900 } 1901 mIsCreating = false; 1902 } else if (hadSurface) { 1903 mSurfaceHolder.ungetCallbacks(); 1904 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1905 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1906 if (callbacks != null) { 1907 for (SurfaceHolder.Callback c : callbacks) { 1908 c.surfaceDestroyed(mSurfaceHolder); 1909 } 1910 } 1911 mSurfaceHolder.mSurfaceLock.lock(); 1912 try { 1913 mSurfaceHolder.mSurface = new Surface(); 1914 } finally { 1915 mSurfaceHolder.mSurfaceLock.unlock(); 1916 } 1917 } 1918 } 1919 1920 final ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 1921 if (hardwareRenderer != null && hardwareRenderer.isEnabled()) { 1922 if (hwInitialized 1923 || mWidth != hardwareRenderer.getWidth() 1924 || mHeight != hardwareRenderer.getHeight()) { 1925 hardwareRenderer.setup(mWidth, mHeight, mAttachInfo, 1926 mWindowAttributes.surfaceInsets); 1927 } 1928 } 1929 1930 if (!mStopped || mReportNextDraw) { 1931 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1932 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1933 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1934 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1935 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1936 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1937 1938 if (DEBUG_LAYOUT) Log.v(mTag, "Ooops, something changed! mWidth=" 1939 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1940 + " mHeight=" + mHeight 1941 + " measuredHeight=" + host.getMeasuredHeight() 1942 + " coveredInsetsChanged=" + contentInsetsChanged); 1943 1944 // Ask host how big it wants to be 1945 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1946 1947 // Implementation of weights from WindowManager.LayoutParams 1948 // We just grow the dimensions as needed and re-measure if 1949 // needs be 1950 int width = host.getMeasuredWidth(); 1951 int height = host.getMeasuredHeight(); 1952 boolean measureAgain = false; 1953 1954 if (lp.horizontalWeight > 0.0f) { 1955 width += (int) ((mWidth - width) * lp.horizontalWeight); 1956 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1957 MeasureSpec.EXACTLY); 1958 measureAgain = true; 1959 } 1960 if (lp.verticalWeight > 0.0f) { 1961 height += (int) ((mHeight - height) * lp.verticalWeight); 1962 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1963 MeasureSpec.EXACTLY); 1964 measureAgain = true; 1965 } 1966 1967 if (measureAgain) { 1968 if (DEBUG_LAYOUT) Log.v(mTag, 1969 "And hey let's measure once more: width=" + width 1970 + " height=" + height); 1971 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1972 } 1973 1974 layoutRequested = true; 1975 } 1976 } 1977 } else { 1978 // Not the first pass and no window/insets/visibility change but the window 1979 // may have moved and we need check that and if so to update the left and right 1980 // in the attach info. We translate only the window frame since on window move 1981 // the window manager tells us only for the new frame but the insets are the 1982 // same and we do not want to translate them more than once. 1983 maybeHandleWindowMove(frame); 1984 } 1985 1986 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 1987 boolean triggerGlobalLayoutListener = didLayout 1988 || mAttachInfo.mRecomputeGlobalAttributes; 1989 if (didLayout) { 1990 performLayout(lp, mWidth, mHeight); 1991 1992 // By this point all views have been sized and positioned 1993 // We can compute the transparent area 1994 1995 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1996 // start out transparent 1997 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1998 host.getLocationInWindow(mTmpLocation); 1999 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 2000 mTmpLocation[0] + host.mRight - host.mLeft, 2001 mTmpLocation[1] + host.mBottom - host.mTop); 2002 2003 host.gatherTransparentRegion(mTransparentRegion); 2004 if (mTranslator != null) { 2005 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 2006 } 2007 2008 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 2009 mPreviousTransparentRegion.set(mTransparentRegion); 2010 mFullRedrawNeeded = true; 2011 // reconfigure window manager 2012 try { 2013 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 2014 } catch (RemoteException e) { 2015 } 2016 } 2017 } 2018 2019 if (DBG) { 2020 System.out.println("======================================"); 2021 System.out.println("performTraversals -- after setFrame"); 2022 host.debug(); 2023 } 2024 } 2025 2026 if (triggerGlobalLayoutListener) { 2027 mAttachInfo.mRecomputeGlobalAttributes = false; 2028 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 2029 } 2030 2031 if (computesInternalInsets) { 2032 // Clear the original insets. 2033 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 2034 insets.reset(); 2035 2036 // Compute new insets in place. 2037 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 2038 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 2039 2040 // Tell the window manager. 2041 if (insetsPending || !mLastGivenInsets.equals(insets)) { 2042 mLastGivenInsets.set(insets); 2043 2044 // Translate insets to screen coordinates if needed. 2045 final Rect contentInsets; 2046 final Rect visibleInsets; 2047 final Region touchableRegion; 2048 if (mTranslator != null) { 2049 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 2050 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 2051 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 2052 } else { 2053 contentInsets = insets.contentInsets; 2054 visibleInsets = insets.visibleInsets; 2055 touchableRegion = insets.touchableRegion; 2056 } 2057 2058 try { 2059 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 2060 contentInsets, visibleInsets, touchableRegion); 2061 } catch (RemoteException e) { 2062 } 2063 } 2064 } 2065 2066 if (mFirst) { 2067 // handle first focus request 2068 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: mView.hasFocus()=" 2069 + mView.hasFocus()); 2070 if (mView != null) { 2071 if (!mView.hasFocus()) { 2072 mView.requestFocus(View.FOCUS_FORWARD); 2073 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: requested focused view=" 2074 + mView.findFocus()); 2075 } else { 2076 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: existing focused view=" 2077 + mView.findFocus()); 2078 } 2079 } 2080 } 2081 2082 final boolean changedVisibility = (viewVisibilityChanged || mFirst) && isViewVisible; 2083 final boolean hasWindowFocus = mAttachInfo.mHasWindowFocus && isViewVisible; 2084 final boolean regainedFocus = hasWindowFocus && mLostWindowFocus; 2085 if (regainedFocus) { 2086 mLostWindowFocus = false; 2087 } else if (!hasWindowFocus && mHadWindowFocus) { 2088 mLostWindowFocus = true; 2089 } 2090 2091 if (changedVisibility || regainedFocus) { 2092 host.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2093 } 2094 2095 mFirst = false; 2096 mWillDrawSoon = false; 2097 mNewSurfaceNeeded = false; 2098 mActivityRelaunched = false; 2099 mViewVisibility = viewVisibility; 2100 mHadWindowFocus = hasWindowFocus; 2101 2102 if (hasWindowFocus && !isInLocalFocusMode()) { 2103 final boolean imTarget = WindowManager.LayoutParams 2104 .mayUseInputMethod(mWindowAttributes.flags); 2105 if (imTarget != mLastWasImTarget) { 2106 mLastWasImTarget = imTarget; 2107 InputMethodManager imm = InputMethodManager.peekInstance(); 2108 if (imm != null && imTarget) { 2109 imm.onPreWindowFocus(mView, hasWindowFocus); 2110 imm.onPostWindowFocus(mView, mView.findFocus(), 2111 mWindowAttributes.softInputMode, 2112 !mHasHadWindowFocus, mWindowAttributes.flags); 2113 } 2114 } 2115 } 2116 2117 // Remember if we must report the next draw. 2118 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 2119 mReportNextDraw = true; 2120 } 2121 2122 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || !isViewVisible; 2123 2124 if (!cancelDraw) { 2125 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2126 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2127 mPendingTransitions.get(i).startChangingAnimations(); 2128 } 2129 mPendingTransitions.clear(); 2130 } 2131 2132 performDraw(); 2133 } else { 2134 if (isViewVisible) { 2135 // Try again 2136 scheduleTraversals(); 2137 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2138 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2139 mPendingTransitions.get(i).endChangingAnimations(); 2140 } 2141 mPendingTransitions.clear(); 2142 } 2143 } 2144 2145 mIsInTraversal = false; 2146 } 2147 2148 private void maybeHandleWindowMove(Rect frame) { 2149 2150 // TODO: Well, we are checking whether the frame has changed similarly 2151 // to how this is done for the insets. This is however incorrect since 2152 // the insets and the frame are translated. For example, the old frame 2153 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 2154 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 2155 // true since we are comparing a not translated value to a translated one. 2156 // This scenario is rare but we may want to fix that. 2157 2158 final boolean windowMoved = mAttachInfo.mWindowLeft != frame.left 2159 || mAttachInfo.mWindowTop != frame.top; 2160 if (windowMoved) { 2161 if (mTranslator != null) { 2162 mTranslator.translateRectInScreenToAppWinFrame(frame); 2163 } 2164 mAttachInfo.mWindowLeft = frame.left; 2165 mAttachInfo.mWindowTop = frame.top; 2166 2167 // Update the light position for the new window offsets. 2168 if (mAttachInfo.mHardwareRenderer != null) { 2169 mAttachInfo.mHardwareRenderer.setLightCenter(mAttachInfo); 2170 } 2171 } 2172 } 2173 2174 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2175 Log.e(mTag, "OutOfResourcesException initializing HW surface", e); 2176 try { 2177 if (!mWindowSession.outOfMemory(mWindow) && 2178 Process.myUid() != Process.SYSTEM_UID) { 2179 Slog.w(mTag, "No processes killed for memory; killing self"); 2180 Process.killProcess(Process.myPid()); 2181 } 2182 } catch (RemoteException ex) { 2183 } 2184 mLayoutRequested = true; // ask wm for a new surface next time. 2185 } 2186 2187 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2188 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2189 try { 2190 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2191 } finally { 2192 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2193 } 2194 } 2195 2196 /** 2197 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2198 * is currently undergoing a layout pass. 2199 * 2200 * @return whether the view hierarchy is currently undergoing a layout pass 2201 */ 2202 boolean isInLayout() { 2203 return mInLayout; 2204 } 2205 2206 /** 2207 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2208 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2209 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2210 * all children in that container hierarchy are measured and laid out at the end of the layout 2211 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2212 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2213 * we check all of those views to see if any still have pending layout requests, which 2214 * indicates that they were not correctly handled by their container hierarchy. If that is 2215 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2216 * to blank containers, and force a second request/measure/layout pass in this frame. If 2217 * more requestLayout() calls are received during that second layout pass, we post those 2218 * requests to the next frame to avoid possible infinite loops. 2219 * 2220 * <p>The return value from this method indicates whether the request should proceed 2221 * (if it is a request during the first layout pass) or should be skipped and posted to the 2222 * next frame (if it is a request during the second layout pass).</p> 2223 * 2224 * @param view the view that requested the layout. 2225 * 2226 * @return true if request should proceed, false otherwise. 2227 */ 2228 boolean requestLayoutDuringLayout(final View view) { 2229 if (view.mParent == null || view.mAttachInfo == null) { 2230 // Would not normally trigger another layout, so just let it pass through as usual 2231 return true; 2232 } 2233 if (!mLayoutRequesters.contains(view)) { 2234 mLayoutRequesters.add(view); 2235 } 2236 if (!mHandlingLayoutInLayoutRequest) { 2237 // Let the request proceed normally; it will be processed in a second layout pass 2238 // if necessary 2239 return true; 2240 } else { 2241 // Don't let the request proceed during the second layout pass. 2242 // It will post to the next frame instead. 2243 return false; 2244 } 2245 } 2246 2247 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2248 int desiredWindowHeight) { 2249 mLayoutRequested = false; 2250 mScrollMayChange = true; 2251 mInLayout = true; 2252 2253 final View host = mView; 2254 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2255 Log.v(mTag, "Laying out " + host + " to (" + 2256 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2257 } 2258 2259 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2260 try { 2261 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2262 2263 mInLayout = false; 2264 int numViewsRequestingLayout = mLayoutRequesters.size(); 2265 if (numViewsRequestingLayout > 0) { 2266 // requestLayout() was called during layout. 2267 // If no layout-request flags are set on the requesting views, there is no problem. 2268 // If some requests are still pending, then we need to clear those flags and do 2269 // a full request/measure/layout pass to handle this situation. 2270 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2271 false); 2272 if (validLayoutRequesters != null) { 2273 // Set this flag to indicate that any further requests are happening during 2274 // the second pass, which may result in posting those requests to the next 2275 // frame instead 2276 mHandlingLayoutInLayoutRequest = true; 2277 2278 // Process fresh layout requests, then measure and layout 2279 int numValidRequests = validLayoutRequesters.size(); 2280 for (int i = 0; i < numValidRequests; ++i) { 2281 final View view = validLayoutRequesters.get(i); 2282 Log.w("View", "requestLayout() improperly called by " + view + 2283 " during layout: running second layout pass"); 2284 view.requestLayout(); 2285 } 2286 measureHierarchy(host, lp, mView.getContext().getResources(), 2287 desiredWindowWidth, desiredWindowHeight); 2288 mInLayout = true; 2289 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2290 2291 mHandlingLayoutInLayoutRequest = false; 2292 2293 // Check the valid requests again, this time without checking/clearing the 2294 // layout flags, since requests happening during the second pass get noop'd 2295 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2296 if (validLayoutRequesters != null) { 2297 final ArrayList<View> finalRequesters = validLayoutRequesters; 2298 // Post second-pass requests to the next frame 2299 getRunQueue().post(new Runnable() { 2300 @Override 2301 public void run() { 2302 int numValidRequests = finalRequesters.size(); 2303 for (int i = 0; i < numValidRequests; ++i) { 2304 final View view = finalRequesters.get(i); 2305 Log.w("View", "requestLayout() improperly called by " + view + 2306 " during second layout pass: posting in next frame"); 2307 view.requestLayout(); 2308 } 2309 } 2310 }); 2311 } 2312 } 2313 2314 } 2315 } finally { 2316 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2317 } 2318 mInLayout = false; 2319 } 2320 2321 /** 2322 * This method is called during layout when there have been calls to requestLayout() during 2323 * layout. It walks through the list of views that requested layout to determine which ones 2324 * still need it, based on visibility in the hierarchy and whether they have already been 2325 * handled (as is usually the case with ListView children). 2326 * 2327 * @param layoutRequesters The list of views that requested layout during layout 2328 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2329 * If so, the FORCE_LAYOUT flag was not set on requesters. 2330 * @return A list of the actual views that still need to be laid out. 2331 */ 2332 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2333 boolean secondLayoutRequests) { 2334 2335 int numViewsRequestingLayout = layoutRequesters.size(); 2336 ArrayList<View> validLayoutRequesters = null; 2337 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2338 View view = layoutRequesters.get(i); 2339 if (view != null && view.mAttachInfo != null && view.mParent != null && 2340 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2341 View.PFLAG_FORCE_LAYOUT)) { 2342 boolean gone = false; 2343 View parent = view; 2344 // Only trigger new requests for views in a non-GONE hierarchy 2345 while (parent != null) { 2346 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2347 gone = true; 2348 break; 2349 } 2350 if (parent.mParent instanceof View) { 2351 parent = (View) parent.mParent; 2352 } else { 2353 parent = null; 2354 } 2355 } 2356 if (!gone) { 2357 if (validLayoutRequesters == null) { 2358 validLayoutRequesters = new ArrayList<View>(); 2359 } 2360 validLayoutRequesters.add(view); 2361 } 2362 } 2363 } 2364 if (!secondLayoutRequests) { 2365 // If we're checking the layout flags, then we need to clean them up also 2366 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2367 View view = layoutRequesters.get(i); 2368 while (view != null && 2369 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2370 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2371 if (view.mParent instanceof View) { 2372 view = (View) view.mParent; 2373 } else { 2374 view = null; 2375 } 2376 } 2377 } 2378 } 2379 layoutRequesters.clear(); 2380 return validLayoutRequesters; 2381 } 2382 2383 @Override 2384 public void requestTransparentRegion(View child) { 2385 // the test below should not fail unless someone is messing with us 2386 checkThread(); 2387 if (mView == child) { 2388 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2389 // Need to make sure we re-evaluate the window attributes next 2390 // time around, to ensure the window has the correct format. 2391 mWindowAttributesChanged = true; 2392 mWindowAttributesChangesFlag = 0; 2393 requestLayout(); 2394 } 2395 } 2396 2397 /** 2398 * Figures out the measure spec for the root view in a window based on it's 2399 * layout params. 2400 * 2401 * @param windowSize 2402 * The available width or height of the window 2403 * 2404 * @param rootDimension 2405 * The layout params for one dimension (width or height) of the 2406 * window. 2407 * 2408 * @return The measure spec to use to measure the root view. 2409 */ 2410 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2411 int measureSpec; 2412 switch (rootDimension) { 2413 2414 case ViewGroup.LayoutParams.MATCH_PARENT: 2415 // Window can't resize. Force root view to be windowSize. 2416 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2417 break; 2418 case ViewGroup.LayoutParams.WRAP_CONTENT: 2419 // Window can resize. Set max size for root view. 2420 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2421 break; 2422 default: 2423 // Window wants to be an exact size. Force root view to be that size. 2424 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2425 break; 2426 } 2427 return measureSpec; 2428 } 2429 2430 int mHardwareXOffset; 2431 int mHardwareYOffset; 2432 2433 @Override 2434 public void onHardwarePreDraw(DisplayListCanvas canvas) { 2435 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2436 } 2437 2438 @Override 2439 public void onHardwarePostDraw(DisplayListCanvas canvas) { 2440 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2441 } 2442 2443 /** 2444 * @hide 2445 */ 2446 void outputDisplayList(View view) { 2447 view.mRenderNode.output(); 2448 if (mAttachInfo.mHardwareRenderer != null) { 2449 ((ThreadedRenderer)mAttachInfo.mHardwareRenderer).serializeDisplayListTree(); 2450 } 2451 } 2452 2453 /** 2454 * @see #PROPERTY_PROFILE_RENDERING 2455 */ 2456 private void profileRendering(boolean enabled) { 2457 if (mProfileRendering) { 2458 mRenderProfilingEnabled = enabled; 2459 2460 if (mRenderProfiler != null) { 2461 mChoreographer.removeFrameCallback(mRenderProfiler); 2462 } 2463 if (mRenderProfilingEnabled) { 2464 if (mRenderProfiler == null) { 2465 mRenderProfiler = new Choreographer.FrameCallback() { 2466 @Override 2467 public void doFrame(long frameTimeNanos) { 2468 mDirty.set(0, 0, mWidth, mHeight); 2469 scheduleTraversals(); 2470 if (mRenderProfilingEnabled) { 2471 mChoreographer.postFrameCallback(mRenderProfiler); 2472 } 2473 } 2474 }; 2475 } 2476 mChoreographer.postFrameCallback(mRenderProfiler); 2477 } else { 2478 mRenderProfiler = null; 2479 } 2480 } 2481 } 2482 2483 /** 2484 * Called from draw() when DEBUG_FPS is enabled 2485 */ 2486 private void trackFPS() { 2487 // Tracks frames per second drawn. First value in a series of draws may be bogus 2488 // because it down not account for the intervening idle time 2489 long nowTime = System.currentTimeMillis(); 2490 if (mFpsStartTime < 0) { 2491 mFpsStartTime = mFpsPrevTime = nowTime; 2492 mFpsNumFrames = 0; 2493 } else { 2494 ++mFpsNumFrames; 2495 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2496 long frameTime = nowTime - mFpsPrevTime; 2497 long totalTime = nowTime - mFpsStartTime; 2498 Log.v(mTag, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2499 mFpsPrevTime = nowTime; 2500 if (totalTime > 1000) { 2501 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2502 Log.v(mTag, "0x" + thisHash + "\tFPS:\t" + fps); 2503 mFpsStartTime = nowTime; 2504 mFpsNumFrames = 0; 2505 } 2506 } 2507 } 2508 2509 private void performDraw() { 2510 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2511 return; 2512 } 2513 2514 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2515 mFullRedrawNeeded = false; 2516 2517 mIsDrawing = true; 2518 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2519 try { 2520 draw(fullRedrawNeeded); 2521 } finally { 2522 mIsDrawing = false; 2523 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2524 } 2525 2526 // For whatever reason we didn't create a HardwareRenderer, end any 2527 // hardware animations that are now dangling 2528 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2529 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2530 for (int i = 0; i < count; i++) { 2531 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2532 } 2533 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2534 } 2535 2536 if (mReportNextDraw) { 2537 mReportNextDraw = false; 2538 2539 // if we're using multi-thread renderer, wait for the window frame draws 2540 if (mWindowDrawCountDown != null) { 2541 try { 2542 mWindowDrawCountDown.await(); 2543 } catch (InterruptedException e) { 2544 Log.e(mTag, "Window redraw count down interruped!"); 2545 } 2546 mWindowDrawCountDown = null; 2547 } 2548 2549 if (mAttachInfo.mHardwareRenderer != null) { 2550 mAttachInfo.mHardwareRenderer.fence(); 2551 } 2552 2553 if (LOCAL_LOGV) { 2554 Log.v(mTag, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2555 } 2556 if (mSurfaceHolder != null && mSurface.isValid()) { 2557 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2558 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2559 if (callbacks != null) { 2560 for (SurfaceHolder.Callback c : callbacks) { 2561 if (c instanceof SurfaceHolder.Callback2) { 2562 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded(mSurfaceHolder); 2563 } 2564 } 2565 } 2566 } 2567 try { 2568 mWindowSession.finishDrawing(mWindow); 2569 } catch (RemoteException e) { 2570 } 2571 } 2572 } 2573 2574 private void draw(boolean fullRedrawNeeded) { 2575 Surface surface = mSurface; 2576 if (!surface.isValid()) { 2577 return; 2578 } 2579 2580 if (DEBUG_FPS) { 2581 trackFPS(); 2582 } 2583 2584 if (!sFirstDrawComplete) { 2585 synchronized (sFirstDrawHandlers) { 2586 sFirstDrawComplete = true; 2587 final int count = sFirstDrawHandlers.size(); 2588 for (int i = 0; i< count; i++) { 2589 mHandler.post(sFirstDrawHandlers.get(i)); 2590 } 2591 } 2592 } 2593 2594 scrollToRectOrFocus(null, false); 2595 2596 if (mAttachInfo.mViewScrollChanged) { 2597 mAttachInfo.mViewScrollChanged = false; 2598 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2599 } 2600 2601 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2602 final int curScrollY; 2603 if (animating) { 2604 curScrollY = mScroller.getCurrY(); 2605 } else { 2606 curScrollY = mScrollY; 2607 } 2608 if (mCurScrollY != curScrollY) { 2609 mCurScrollY = curScrollY; 2610 fullRedrawNeeded = true; 2611 if (mView instanceof RootViewSurfaceTaker) { 2612 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2613 } 2614 } 2615 2616 final float appScale = mAttachInfo.mApplicationScale; 2617 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2618 2619 int resizeAlpha = 0; 2620 2621 final Rect dirty = mDirty; 2622 if (mSurfaceHolder != null) { 2623 // The app owns the surface, we won't draw. 2624 dirty.setEmpty(); 2625 if (animating && mScroller != null) { 2626 mScroller.abortAnimation(); 2627 } 2628 return; 2629 } 2630 2631 if (fullRedrawNeeded) { 2632 mAttachInfo.mIgnoreDirtyState = true; 2633 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2634 } 2635 2636 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2637 Log.v(mTag, "Draw " + mView + "/" 2638 + mWindowAttributes.getTitle() 2639 + ": dirty={" + dirty.left + "," + dirty.top 2640 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2641 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2642 appScale + ", width=" + mWidth + ", height=" + mHeight); 2643 } 2644 2645 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2646 2647 int xOffset = -mCanvasOffsetX; 2648 int yOffset = -mCanvasOffsetY + curScrollY; 2649 final WindowManager.LayoutParams params = mWindowAttributes; 2650 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2651 if (surfaceInsets != null) { 2652 xOffset -= surfaceInsets.left; 2653 yOffset -= surfaceInsets.top; 2654 2655 // Offset dirty rect for surface insets. 2656 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2657 } 2658 2659 boolean accessibilityFocusDirty = false; 2660 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2661 if (drawable != null) { 2662 final Rect bounds = mAttachInfo.mTmpInvalRect; 2663 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2664 if (!hasFocus) { 2665 bounds.setEmpty(); 2666 } 2667 if (!bounds.equals(drawable.getBounds())) { 2668 accessibilityFocusDirty = true; 2669 } 2670 } 2671 2672 mAttachInfo.mDrawingTime = 2673 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2674 2675 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2676 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2677 // If accessibility focus moved, always invalidate the root. 2678 boolean invalidateRoot = accessibilityFocusDirty; 2679 2680 // Draw with hardware renderer. 2681 mIsAnimating = false; 2682 2683 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2684 mHardwareYOffset = yOffset; 2685 mHardwareXOffset = xOffset; 2686 invalidateRoot = true; 2687 } 2688 2689 if (invalidateRoot) { 2690 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2691 } 2692 2693 dirty.setEmpty(); 2694 2695 // Stage the content drawn size now. It will be transferred to the renderer 2696 // shortly before the draw commands get send to the renderer. 2697 final boolean updated = updateContentDrawBounds(); 2698 2699 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2700 2701 if (updated) { 2702 requestDrawWindow(); 2703 } 2704 } else { 2705 // If we get here with a disabled & requested hardware renderer, something went 2706 // wrong (an invalidate posted right before we destroyed the hardware surface 2707 // for instance) so we should just bail out. Locking the surface with software 2708 // rendering at this point would lock it forever and prevent hardware renderer 2709 // from doing its job when it comes back. 2710 // Before we request a new frame we must however attempt to reinitiliaze the 2711 // hardware renderer if it's in requested state. This would happen after an 2712 // eglTerminate() for instance. 2713 if (mAttachInfo.mHardwareRenderer != null && 2714 !mAttachInfo.mHardwareRenderer.isEnabled() && 2715 mAttachInfo.mHardwareRenderer.isRequested()) { 2716 2717 try { 2718 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2719 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 2720 } catch (OutOfResourcesException e) { 2721 handleOutOfResourcesException(e); 2722 return; 2723 } 2724 2725 mFullRedrawNeeded = true; 2726 scheduleTraversals(); 2727 return; 2728 } 2729 2730 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2731 return; 2732 } 2733 } 2734 } 2735 2736 if (animating) { 2737 mFullRedrawNeeded = true; 2738 scheduleTraversals(); 2739 } 2740 } 2741 2742 /** 2743 * @return true if drawing was successful, false if an error occurred 2744 */ 2745 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2746 boolean scalingRequired, Rect dirty) { 2747 2748 // Draw with software renderer. 2749 final Canvas canvas; 2750 try { 2751 final int left = dirty.left; 2752 final int top = dirty.top; 2753 final int right = dirty.right; 2754 final int bottom = dirty.bottom; 2755 2756 canvas = mSurface.lockCanvas(dirty); 2757 2758 // The dirty rectangle can be modified by Surface.lockCanvas() 2759 //noinspection ConstantConditions 2760 if (left != dirty.left || top != dirty.top || right != dirty.right 2761 || bottom != dirty.bottom) { 2762 attachInfo.mIgnoreDirtyState = true; 2763 } 2764 2765 // TODO: Do this in native 2766 canvas.setDensity(mDensity); 2767 } catch (Surface.OutOfResourcesException e) { 2768 handleOutOfResourcesException(e); 2769 return false; 2770 } catch (IllegalArgumentException e) { 2771 Log.e(mTag, "Could not lock surface", e); 2772 // Don't assume this is due to out of memory, it could be 2773 // something else, and if it is something else then we could 2774 // kill stuff (or ourself) for no reason. 2775 mLayoutRequested = true; // ask wm for a new surface next time. 2776 return false; 2777 } 2778 2779 try { 2780 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2781 Log.v(mTag, "Surface " + surface + " drawing to bitmap w=" 2782 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2783 //canvas.drawARGB(255, 255, 0, 0); 2784 } 2785 2786 // If this bitmap's format includes an alpha channel, we 2787 // need to clear it before drawing so that the child will 2788 // properly re-composite its drawing on a transparent 2789 // background. This automatically respects the clip/dirty region 2790 // or 2791 // If we are applying an offset, we need to clear the area 2792 // where the offset doesn't appear to avoid having garbage 2793 // left in the blank areas. 2794 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2795 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2796 } 2797 2798 dirty.setEmpty(); 2799 mIsAnimating = false; 2800 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2801 2802 if (DEBUG_DRAW) { 2803 Context cxt = mView.getContext(); 2804 Log.i(mTag, "Drawing: package:" + cxt.getPackageName() + 2805 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2806 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2807 } 2808 try { 2809 canvas.translate(-xoff, -yoff); 2810 if (mTranslator != null) { 2811 mTranslator.translateCanvas(canvas); 2812 } 2813 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2814 attachInfo.mSetIgnoreDirtyState = false; 2815 2816 mView.draw(canvas); 2817 2818 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2819 } finally { 2820 if (!attachInfo.mSetIgnoreDirtyState) { 2821 // Only clear the flag if it was not set during the mView.draw() call 2822 attachInfo.mIgnoreDirtyState = false; 2823 } 2824 } 2825 } finally { 2826 try { 2827 surface.unlockCanvasAndPost(canvas); 2828 } catch (IllegalArgumentException e) { 2829 Log.e(mTag, "Could not unlock surface", e); 2830 mLayoutRequested = true; // ask wm for a new surface next time. 2831 //noinspection ReturnInsideFinallyBlock 2832 return false; 2833 } 2834 2835 if (LOCAL_LOGV) { 2836 Log.v(mTag, "Surface " + surface + " unlockCanvasAndPost"); 2837 } 2838 } 2839 return true; 2840 } 2841 2842 /** 2843 * We want to draw a highlight around the current accessibility focused. 2844 * Since adding a style for all possible view is not a viable option we 2845 * have this specialized drawing method. 2846 * 2847 * Note: We are doing this here to be able to draw the highlight for 2848 * virtual views in addition to real ones. 2849 * 2850 * @param canvas The canvas on which to draw. 2851 */ 2852 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2853 final Rect bounds = mAttachInfo.mTmpInvalRect; 2854 if (getAccessibilityFocusedRect(bounds)) { 2855 final Drawable drawable = getAccessibilityFocusedDrawable(); 2856 if (drawable != null) { 2857 drawable.setBounds(bounds); 2858 drawable.draw(canvas); 2859 } 2860 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2861 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2862 } 2863 } 2864 2865 private boolean getAccessibilityFocusedRect(Rect bounds) { 2866 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2867 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2868 return false; 2869 } 2870 2871 final View host = mAccessibilityFocusedHost; 2872 if (host == null || host.mAttachInfo == null) { 2873 return false; 2874 } 2875 2876 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2877 if (provider == null) { 2878 host.getBoundsOnScreen(bounds, true); 2879 } else if (mAccessibilityFocusedVirtualView != null) { 2880 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2881 } else { 2882 return false; 2883 } 2884 2885 // Transform the rect into window-relative coordinates. 2886 final AttachInfo attachInfo = mAttachInfo; 2887 bounds.offset(0, attachInfo.mViewRootImpl.mScrollY); 2888 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2889 if (!bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, 2890 attachInfo.mViewRootImpl.mHeight)) { 2891 // If no intersection, set bounds to empty. 2892 bounds.setEmpty(); 2893 } 2894 return !bounds.isEmpty(); 2895 } 2896 2897 private Drawable getAccessibilityFocusedDrawable() { 2898 // Lazily load the accessibility focus drawable. 2899 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2900 final TypedValue value = new TypedValue(); 2901 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2902 R.attr.accessibilityFocusedDrawable, value, true); 2903 if (resolved) { 2904 mAttachInfo.mAccessibilityFocusDrawable = 2905 mView.mContext.getDrawable(value.resourceId); 2906 } 2907 } 2908 return mAttachInfo.mAccessibilityFocusDrawable; 2909 } 2910 2911 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2912 final Rect ci = mAttachInfo.mContentInsets; 2913 final Rect vi = mAttachInfo.mVisibleInsets; 2914 int scrollY = 0; 2915 boolean handled = false; 2916 2917 if (vi.left > ci.left || vi.top > ci.top 2918 || vi.right > ci.right || vi.bottom > ci.bottom) { 2919 // We'll assume that we aren't going to change the scroll 2920 // offset, since we want to avoid that unless it is actually 2921 // going to make the focus visible... otherwise we scroll 2922 // all over the place. 2923 scrollY = mScrollY; 2924 // We can be called for two different situations: during a draw, 2925 // to update the scroll position if the focus has changed (in which 2926 // case 'rectangle' is null), or in response to a 2927 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2928 // is non-null and we just want to scroll to whatever that 2929 // rectangle is). 2930 final View focus = mView.findFocus(); 2931 if (focus == null) { 2932 return false; 2933 } 2934 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2935 if (focus != lastScrolledFocus) { 2936 // If the focus has changed, then ignore any requests to scroll 2937 // to a rectangle; first we want to make sure the entire focus 2938 // view is visible. 2939 rectangle = null; 2940 } 2941 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Eval scroll: focus=" + focus 2942 + " rectangle=" + rectangle + " ci=" + ci 2943 + " vi=" + vi); 2944 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2945 // Optimization: if the focus hasn't changed since last 2946 // time, and no layout has happened, then just leave things 2947 // as they are. 2948 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Keeping scroll y=" 2949 + mScrollY + " vi=" + vi.toShortString()); 2950 } else { 2951 // We need to determine if the currently focused view is 2952 // within the visible part of the window and, if not, apply 2953 // a pan so it can be seen. 2954 mLastScrolledFocus = new WeakReference<View>(focus); 2955 mScrollMayChange = false; 2956 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Need to scroll?"); 2957 // Try to find the rectangle from the focus view. 2958 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2959 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Root w=" 2960 + mView.getWidth() + " h=" + mView.getHeight() 2961 + " ci=" + ci.toShortString() 2962 + " vi=" + vi.toShortString()); 2963 if (rectangle == null) { 2964 focus.getFocusedRect(mTempRect); 2965 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Focus " + focus 2966 + ": focusRect=" + mTempRect.toShortString()); 2967 if (mView instanceof ViewGroup) { 2968 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2969 focus, mTempRect); 2970 } 2971 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2972 "Focus in window: focusRect=" 2973 + mTempRect.toShortString() 2974 + " visRect=" + mVisRect.toShortString()); 2975 } else { 2976 mTempRect.set(rectangle); 2977 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2978 "Request scroll to rect: " 2979 + mTempRect.toShortString() 2980 + " visRect=" + mVisRect.toShortString()); 2981 } 2982 if (mTempRect.intersect(mVisRect)) { 2983 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2984 "Focus window visible rect: " 2985 + mTempRect.toShortString()); 2986 if (mTempRect.height() > 2987 (mView.getHeight()-vi.top-vi.bottom)) { 2988 // If the focus simply is not going to fit, then 2989 // best is probably just to leave things as-is. 2990 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2991 "Too tall; leaving scrollY=" + scrollY); 2992 } else if ((mTempRect.top-scrollY) < vi.top) { 2993 scrollY -= vi.top - (mTempRect.top-scrollY); 2994 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2995 "Top covered; scrollY=" + scrollY); 2996 } else if ((mTempRect.bottom-scrollY) 2997 > (mView.getHeight()-vi.bottom)) { 2998 scrollY += (mTempRect.bottom-scrollY) 2999 - (mView.getHeight()-vi.bottom); 3000 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3001 "Bottom covered; scrollY=" + scrollY); 3002 } 3003 handled = true; 3004 } 3005 } 3006 } 3007 } 3008 3009 if (scrollY != mScrollY) { 3010 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Pan scroll changed: old=" 3011 + mScrollY + " , new=" + scrollY); 3012 if (!immediate) { 3013 if (mScroller == null) { 3014 mScroller = new Scroller(mView.getContext()); 3015 } 3016 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 3017 } else if (mScroller != null) { 3018 mScroller.abortAnimation(); 3019 } 3020 mScrollY = scrollY; 3021 } 3022 3023 return handled; 3024 } 3025 3026 /** 3027 * @hide 3028 */ 3029 public View getAccessibilityFocusedHost() { 3030 return mAccessibilityFocusedHost; 3031 } 3032 3033 /** 3034 * @hide 3035 */ 3036 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 3037 return mAccessibilityFocusedVirtualView; 3038 } 3039 3040 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 3041 // If we have a virtual view with accessibility focus we need 3042 // to clear the focus and invalidate the virtual view bounds. 3043 if (mAccessibilityFocusedVirtualView != null) { 3044 3045 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 3046 View focusHost = mAccessibilityFocusedHost; 3047 3048 // Wipe the state of the current accessibility focus since 3049 // the call into the provider to clear accessibility focus 3050 // will fire an accessibility event which will end up calling 3051 // this method and we want to have clean state when this 3052 // invocation happens. 3053 mAccessibilityFocusedHost = null; 3054 mAccessibilityFocusedVirtualView = null; 3055 3056 // Clear accessibility focus on the host after clearing state since 3057 // this method may be reentrant. 3058 focusHost.clearAccessibilityFocusNoCallbacks(); 3059 3060 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 3061 if (provider != null) { 3062 // Invalidate the area of the cleared accessibility focus. 3063 focusNode.getBoundsInParent(mTempRect); 3064 focusHost.invalidate(mTempRect); 3065 // Clear accessibility focus in the virtual node. 3066 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 3067 focusNode.getSourceNodeId()); 3068 provider.performAction(virtualNodeId, 3069 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 3070 } 3071 focusNode.recycle(); 3072 } 3073 if (mAccessibilityFocusedHost != null) { 3074 // Clear accessibility focus in the view. 3075 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 3076 } 3077 3078 // Set the new focus host and node. 3079 mAccessibilityFocusedHost = view; 3080 mAccessibilityFocusedVirtualView = node; 3081 3082 if (mAttachInfo.mHardwareRenderer != null) { 3083 mAttachInfo.mHardwareRenderer.invalidateRoot(); 3084 } 3085 } 3086 3087 void setPointerCapture(View view) { 3088 if (!mAttachInfo.mHasWindowFocus) { 3089 Log.w(mTag, "Can't set capture if it's not focused."); 3090 return; 3091 } 3092 if (mCapturingView == view) { 3093 return; 3094 } 3095 mCapturingView = view; 3096 InputManager.getInstance().setPointerIconDetached(true); 3097 } 3098 3099 void releasePointerCapture(View view) { 3100 if (mCapturingView != view || mCapturingView == null) { 3101 return; 3102 } 3103 3104 mCapturingView = null; 3105 InputManager.getInstance().setPointerIconDetached(false); 3106 } 3107 3108 boolean hasPointerCapture(View view) { 3109 return view != null && mCapturingView == view; 3110 } 3111 3112 @Override 3113 public void requestChildFocus(View child, View focused) { 3114 if (DEBUG_INPUT_RESIZE) { 3115 Log.v(mTag, "Request child focus: focus now " + focused); 3116 } 3117 checkThread(); 3118 scheduleTraversals(); 3119 } 3120 3121 @Override 3122 public void clearChildFocus(View child) { 3123 if (DEBUG_INPUT_RESIZE) { 3124 Log.v(mTag, "Clearing child focus"); 3125 } 3126 checkThread(); 3127 scheduleTraversals(); 3128 } 3129 3130 @Override 3131 public ViewParent getParentForAccessibility() { 3132 return null; 3133 } 3134 3135 @Override 3136 public void focusableViewAvailable(View v) { 3137 checkThread(); 3138 if (mView != null) { 3139 if (!mView.hasFocus()) { 3140 v.requestFocus(); 3141 } else { 3142 // the one case where will transfer focus away from the current one 3143 // is if the current view is a view group that prefers to give focus 3144 // to its children first AND the view is a descendant of it. 3145 View focused = mView.findFocus(); 3146 if (focused instanceof ViewGroup) { 3147 ViewGroup group = (ViewGroup) focused; 3148 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3149 && isViewDescendantOf(v, focused)) { 3150 v.requestFocus(); 3151 } 3152 } 3153 } 3154 } 3155 } 3156 3157 @Override 3158 public void recomputeViewAttributes(View child) { 3159 checkThread(); 3160 if (mView == child) { 3161 mAttachInfo.mRecomputeGlobalAttributes = true; 3162 if (!mWillDrawSoon) { 3163 scheduleTraversals(); 3164 } 3165 } 3166 } 3167 3168 void dispatchDetachedFromWindow() { 3169 if (mView != null && mView.mAttachInfo != null) { 3170 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 3171 mView.dispatchDetachedFromWindow(); 3172 } 3173 3174 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 3175 mAccessibilityManager.removeAccessibilityStateChangeListener( 3176 mAccessibilityInteractionConnectionManager); 3177 mAccessibilityManager.removeHighTextContrastStateChangeListener( 3178 mHighContrastTextManager); 3179 removeSendWindowContentChangedCallback(); 3180 3181 destroyHardwareRenderer(); 3182 3183 setAccessibilityFocus(null, null); 3184 3185 mView.assignParent(null); 3186 mView = null; 3187 mAttachInfo.mRootView = null; 3188 3189 if (mCapturingView != null) { 3190 releasePointerCapture(mCapturingView); 3191 } 3192 3193 mSurface.release(); 3194 3195 if (mInputQueueCallback != null && mInputQueue != null) { 3196 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 3197 mInputQueue.dispose(); 3198 mInputQueueCallback = null; 3199 mInputQueue = null; 3200 } 3201 if (mInputEventReceiver != null) { 3202 mInputEventReceiver.dispose(); 3203 mInputEventReceiver = null; 3204 } 3205 try { 3206 mWindowSession.remove(mWindow); 3207 } catch (RemoteException e) { 3208 } 3209 3210 // Dispose the input channel after removing the window so the Window Manager 3211 // doesn't interpret the input channel being closed as an abnormal termination. 3212 if (mInputChannel != null) { 3213 mInputChannel.dispose(); 3214 mInputChannel = null; 3215 } 3216 3217 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3218 3219 unscheduleTraversals(); 3220 } 3221 3222 void updateConfiguration(Configuration config, boolean force) { 3223 if (DEBUG_CONFIGURATION) Log.v(mTag, 3224 "Applying new config to window " 3225 + mWindowAttributes.getTitle() 3226 + ": " + config); 3227 3228 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3229 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3230 config = new Configuration(config); 3231 ci.applyToConfiguration(mNoncompatDensity, config); 3232 } 3233 3234 synchronized (sConfigCallbacks) { 3235 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3236 sConfigCallbacks.get(i).onConfigurationChanged(config); 3237 } 3238 } 3239 if (mView != null) { 3240 // At this point the resources have been updated to 3241 // have the most recent config, whatever that is. Use 3242 // the one in them which may be newer. 3243 config = mView.getResources().getConfiguration(); 3244 if (force || mLastConfiguration.diff(config) != 0) { 3245 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3246 final int currentLayoutDirection = config.getLayoutDirection(); 3247 mLastConfiguration.setTo(config); 3248 if (lastLayoutDirection != currentLayoutDirection && 3249 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3250 mView.setLayoutDirection(currentLayoutDirection); 3251 } 3252 mView.dispatchConfigurationChanged(config); 3253 } 3254 } 3255 } 3256 3257 /** 3258 * Return true if child is an ancestor of parent, (or equal to the parent). 3259 */ 3260 public static boolean isViewDescendantOf(View child, View parent) { 3261 if (child == parent) { 3262 return true; 3263 } 3264 3265 final ViewParent theParent = child.getParent(); 3266 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3267 } 3268 3269 private static void forceLayout(View view) { 3270 view.forceLayout(); 3271 if (view instanceof ViewGroup) { 3272 ViewGroup group = (ViewGroup) view; 3273 final int count = group.getChildCount(); 3274 for (int i = 0; i < count; i++) { 3275 forceLayout(group.getChildAt(i)); 3276 } 3277 } 3278 } 3279 3280 private final static int MSG_INVALIDATE = 1; 3281 private final static int MSG_INVALIDATE_RECT = 2; 3282 private final static int MSG_DIE = 3; 3283 private final static int MSG_RESIZED = 4; 3284 private final static int MSG_RESIZED_REPORT = 5; 3285 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3286 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3287 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3288 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3289 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3290 private final static int MSG_CHECK_FOCUS = 13; 3291 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3292 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3293 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3294 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3295 private final static int MSG_UPDATE_CONFIGURATION = 18; 3296 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3297 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3298 private final static int MSG_INVALIDATE_WORLD = 22; 3299 private final static int MSG_WINDOW_MOVED = 23; 3300 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 24; 3301 private final static int MSG_DISPATCH_WINDOW_SHOWN = 25; 3302 private final static int MSG_REQUEST_KEYBOARD_SHORTCUTS = 26; 3303 private final static int MSG_UPDATE_POINTER_ICON = 27; 3304 3305 final class ViewRootHandler extends Handler { 3306 @Override 3307 public String getMessageName(Message message) { 3308 switch (message.what) { 3309 case MSG_INVALIDATE: 3310 return "MSG_INVALIDATE"; 3311 case MSG_INVALIDATE_RECT: 3312 return "MSG_INVALIDATE_RECT"; 3313 case MSG_DIE: 3314 return "MSG_DIE"; 3315 case MSG_RESIZED: 3316 return "MSG_RESIZED"; 3317 case MSG_RESIZED_REPORT: 3318 return "MSG_RESIZED_REPORT"; 3319 case MSG_WINDOW_FOCUS_CHANGED: 3320 return "MSG_WINDOW_FOCUS_CHANGED"; 3321 case MSG_DISPATCH_INPUT_EVENT: 3322 return "MSG_DISPATCH_INPUT_EVENT"; 3323 case MSG_DISPATCH_APP_VISIBILITY: 3324 return "MSG_DISPATCH_APP_VISIBILITY"; 3325 case MSG_DISPATCH_GET_NEW_SURFACE: 3326 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3327 case MSG_DISPATCH_KEY_FROM_IME: 3328 return "MSG_DISPATCH_KEY_FROM_IME"; 3329 case MSG_CHECK_FOCUS: 3330 return "MSG_CHECK_FOCUS"; 3331 case MSG_CLOSE_SYSTEM_DIALOGS: 3332 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3333 case MSG_DISPATCH_DRAG_EVENT: 3334 return "MSG_DISPATCH_DRAG_EVENT"; 3335 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3336 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3337 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3338 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3339 case MSG_UPDATE_CONFIGURATION: 3340 return "MSG_UPDATE_CONFIGURATION"; 3341 case MSG_PROCESS_INPUT_EVENTS: 3342 return "MSG_PROCESS_INPUT_EVENTS"; 3343 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3344 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3345 case MSG_WINDOW_MOVED: 3346 return "MSG_WINDOW_MOVED"; 3347 case MSG_SYNTHESIZE_INPUT_EVENT: 3348 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3349 case MSG_DISPATCH_WINDOW_SHOWN: 3350 return "MSG_DISPATCH_WINDOW_SHOWN"; 3351 case MSG_UPDATE_POINTER_ICON: 3352 return "MSG_UPDATE_POINTER_ICON"; 3353 } 3354 return super.getMessageName(message); 3355 } 3356 3357 @Override 3358 public void handleMessage(Message msg) { 3359 switch (msg.what) { 3360 case MSG_INVALIDATE: 3361 ((View) msg.obj).invalidate(); 3362 break; 3363 case MSG_INVALIDATE_RECT: 3364 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3365 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3366 info.recycle(); 3367 break; 3368 case MSG_PROCESS_INPUT_EVENTS: 3369 mProcessInputEventsScheduled = false; 3370 doProcessInputEvents(); 3371 break; 3372 case MSG_DISPATCH_APP_VISIBILITY: 3373 handleAppVisibility(msg.arg1 != 0); 3374 break; 3375 case MSG_DISPATCH_GET_NEW_SURFACE: 3376 handleGetNewSurface(); 3377 break; 3378 case MSG_RESIZED: { 3379 // Recycled in the fall through... 3380 SomeArgs args = (SomeArgs) msg.obj; 3381 if (mWinFrame.equals(args.arg1) 3382 && mPendingOverscanInsets.equals(args.arg5) 3383 && mPendingContentInsets.equals(args.arg2) 3384 && mPendingStableInsets.equals(args.arg6) 3385 && mPendingVisibleInsets.equals(args.arg3) 3386 && mPendingOutsets.equals(args.arg7) 3387 && mPendingBackDropFrame.equals(args.arg8) 3388 && args.arg4 == null 3389 && args.argi1 == 0) { 3390 break; 3391 } 3392 } // fall through... 3393 case MSG_RESIZED_REPORT: 3394 if (mAdded) { 3395 SomeArgs args = (SomeArgs) msg.obj; 3396 3397 Configuration config = (Configuration) args.arg4; 3398 if (config != null) { 3399 updateConfiguration(config, false); 3400 } 3401 3402 mWinFrame.set((Rect) args.arg1); 3403 mPendingOverscanInsets.set((Rect) args.arg5); 3404 mPendingContentInsets.set((Rect) args.arg2); 3405 mPendingStableInsets.set((Rect) args.arg6); 3406 mPendingVisibleInsets.set((Rect) args.arg3); 3407 mPendingOutsets.set((Rect) args.arg7); 3408 mPendingBackDropFrame.set((Rect) args.arg8); 3409 mForceNextWindowRelayout = args.argi1 != 0; 3410 mPendingAlwaysConsumeNavBar = args.argi2 != 0; 3411 3412 args.recycle(); 3413 3414 if (msg.what == MSG_RESIZED_REPORT) { 3415 mReportNextDraw = true; 3416 } 3417 3418 if (mView != null) { 3419 forceLayout(mView); 3420 } 3421 3422 requestLayout(); 3423 } 3424 break; 3425 case MSG_WINDOW_MOVED: 3426 if (mAdded) { 3427 final int w = mWinFrame.width(); 3428 final int h = mWinFrame.height(); 3429 final int l = msg.arg1; 3430 final int t = msg.arg2; 3431 mWinFrame.left = l; 3432 mWinFrame.right = l + w; 3433 mWinFrame.top = t; 3434 mWinFrame.bottom = t + h; 3435 3436 mPendingBackDropFrame.set(mWinFrame); 3437 3438 // Suppress layouts during resizing - a correct layout will happen when resizing 3439 // is done, and this just increases system load. 3440 boolean isDockedDivider = mWindowAttributes.type == TYPE_DOCK_DIVIDER; 3441 boolean suppress = (mDragResizing && mResizeMode == RESIZE_MODE_DOCKED_DIVIDER) 3442 || isDockedDivider; 3443 if (!suppress) { 3444 if (mView != null) { 3445 forceLayout(mView); 3446 } 3447 requestLayout(); 3448 } else { 3449 maybeHandleWindowMove(mWinFrame); 3450 } 3451 } 3452 break; 3453 case MSG_WINDOW_FOCUS_CHANGED: { 3454 if (mAdded) { 3455 boolean hasWindowFocus = msg.arg1 != 0; 3456 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3457 3458 profileRendering(hasWindowFocus); 3459 3460 if (hasWindowFocus) { 3461 boolean inTouchMode = msg.arg2 != 0; 3462 ensureTouchModeLocally(inTouchMode); 3463 3464 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3465 mFullRedrawNeeded = true; 3466 try { 3467 final WindowManager.LayoutParams lp = mWindowAttributes; 3468 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3469 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3470 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 3471 } catch (OutOfResourcesException e) { 3472 Log.e(mTag, "OutOfResourcesException locking surface", e); 3473 try { 3474 if (!mWindowSession.outOfMemory(mWindow)) { 3475 Slog.w(mTag, "No processes killed for memory; killing self"); 3476 Process.killProcess(Process.myPid()); 3477 } 3478 } catch (RemoteException ex) { 3479 } 3480 // Retry in a bit. 3481 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3482 return; 3483 } 3484 } 3485 } 3486 3487 mLastWasImTarget = WindowManager.LayoutParams 3488 .mayUseInputMethod(mWindowAttributes.flags); 3489 3490 InputMethodManager imm = InputMethodManager.peekInstance(); 3491 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3492 imm.onPreWindowFocus(mView, hasWindowFocus); 3493 } 3494 if (mView != null) { 3495 mAttachInfo.mKeyDispatchState.reset(); 3496 mView.dispatchWindowFocusChanged(hasWindowFocus); 3497 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3498 } 3499 3500 // Note: must be done after the focus change callbacks, 3501 // so all of the view state is set up correctly. 3502 if (hasWindowFocus) { 3503 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3504 imm.onPostWindowFocus(mView, mView.findFocus(), 3505 mWindowAttributes.softInputMode, 3506 !mHasHadWindowFocus, mWindowAttributes.flags); 3507 } 3508 // Clear the forward bit. We can just do this directly, since 3509 // the window manager doesn't care about it. 3510 mWindowAttributes.softInputMode &= 3511 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3512 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3513 .softInputMode &= 3514 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3515 mHasHadWindowFocus = true; 3516 } else if (mCapturingView != null) { 3517 releasePointerCapture(mCapturingView); 3518 } 3519 } 3520 } break; 3521 case MSG_DIE: 3522 doDie(); 3523 break; 3524 case MSG_DISPATCH_INPUT_EVENT: { 3525 SomeArgs args = (SomeArgs)msg.obj; 3526 InputEvent event = (InputEvent)args.arg1; 3527 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3528 enqueueInputEvent(event, receiver, 0, true); 3529 args.recycle(); 3530 } break; 3531 case MSG_SYNTHESIZE_INPUT_EVENT: { 3532 InputEvent event = (InputEvent)msg.obj; 3533 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3534 } break; 3535 case MSG_DISPATCH_KEY_FROM_IME: { 3536 if (LOCAL_LOGV) Log.v( 3537 TAG, "Dispatching key " 3538 + msg.obj + " from IME to " + mView); 3539 KeyEvent event = (KeyEvent)msg.obj; 3540 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3541 // The IME is trying to say this event is from the 3542 // system! Bad bad bad! 3543 //noinspection UnusedAssignment 3544 event = KeyEvent.changeFlags(event, event.getFlags() & 3545 ~KeyEvent.FLAG_FROM_SYSTEM); 3546 } 3547 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3548 } break; 3549 case MSG_CHECK_FOCUS: { 3550 InputMethodManager imm = InputMethodManager.peekInstance(); 3551 if (imm != null) { 3552 imm.checkFocus(); 3553 } 3554 } break; 3555 case MSG_CLOSE_SYSTEM_DIALOGS: { 3556 if (mView != null) { 3557 mView.onCloseSystemDialogs((String)msg.obj); 3558 } 3559 } break; 3560 case MSG_DISPATCH_DRAG_EVENT: 3561 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3562 DragEvent event = (DragEvent)msg.obj; 3563 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3564 handleDragEvent(event); 3565 } break; 3566 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3567 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3568 } break; 3569 case MSG_UPDATE_CONFIGURATION: { 3570 Configuration config = (Configuration)msg.obj; 3571 if (config.isOtherSeqNewer(mLastConfiguration)) { 3572 config = mLastConfiguration; 3573 } 3574 updateConfiguration(config, false); 3575 } break; 3576 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3577 setAccessibilityFocus(null, null); 3578 } break; 3579 case MSG_INVALIDATE_WORLD: { 3580 if (mView != null) { 3581 invalidateWorld(mView); 3582 } 3583 } break; 3584 case MSG_DISPATCH_WINDOW_SHOWN: { 3585 handleDispatchWindowShown(); 3586 } break; 3587 case MSG_REQUEST_KEYBOARD_SHORTCUTS: { 3588 final IResultReceiver receiver = (IResultReceiver) msg.obj; 3589 final int deviceId = msg.arg1; 3590 handleRequestKeyboardShortcuts(receiver, deviceId); 3591 } break; 3592 case MSG_UPDATE_POINTER_ICON: { 3593 MotionEvent event = (MotionEvent) msg.obj; 3594 resetPointerIcon(event); 3595 } break; 3596 } 3597 } 3598 } 3599 3600 final ViewRootHandler mHandler = new ViewRootHandler(); 3601 3602 /** 3603 * Something in the current window tells us we need to change the touch mode. For 3604 * example, we are not in touch mode, and the user touches the screen. 3605 * 3606 * If the touch mode has changed, tell the window manager, and handle it locally. 3607 * 3608 * @param inTouchMode Whether we want to be in touch mode. 3609 * @return True if the touch mode changed and focus changed was changed as a result 3610 */ 3611 boolean ensureTouchMode(boolean inTouchMode) { 3612 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3613 + "touch mode is " + mAttachInfo.mInTouchMode); 3614 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3615 3616 // tell the window manager 3617 try { 3618 mWindowSession.setInTouchMode(inTouchMode); 3619 } catch (RemoteException e) { 3620 throw new RuntimeException(e); 3621 } 3622 3623 // handle the change 3624 return ensureTouchModeLocally(inTouchMode); 3625 } 3626 3627 /** 3628 * Ensure that the touch mode for this window is set, and if it is changing, 3629 * take the appropriate action. 3630 * @param inTouchMode Whether we want to be in touch mode. 3631 * @return True if the touch mode changed and focus changed was changed as a result 3632 */ 3633 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3634 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3635 + "touch mode is " + mAttachInfo.mInTouchMode); 3636 3637 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3638 3639 mAttachInfo.mInTouchMode = inTouchMode; 3640 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3641 3642 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3643 } 3644 3645 private boolean enterTouchMode() { 3646 if (mView != null && mView.hasFocus()) { 3647 // note: not relying on mFocusedView here because this could 3648 // be when the window is first being added, and mFocused isn't 3649 // set yet. 3650 final View focused = mView.findFocus(); 3651 if (focused != null && !focused.isFocusableInTouchMode()) { 3652 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3653 if (ancestorToTakeFocus != null) { 3654 // there is an ancestor that wants focus after its 3655 // descendants that is focusable in touch mode.. give it 3656 // focus 3657 return ancestorToTakeFocus.requestFocus(); 3658 } else { 3659 // There's nothing to focus. Clear and propagate through the 3660 // hierarchy, but don't attempt to place new focus. 3661 focused.clearFocusInternal(null, true, false); 3662 return true; 3663 } 3664 } 3665 } 3666 return false; 3667 } 3668 3669 /** 3670 * Find an ancestor of focused that wants focus after its descendants and is 3671 * focusable in touch mode. 3672 * @param focused The currently focused view. 3673 * @return An appropriate view, or null if no such view exists. 3674 */ 3675 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3676 ViewParent parent = focused.getParent(); 3677 while (parent instanceof ViewGroup) { 3678 final ViewGroup vgParent = (ViewGroup) parent; 3679 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3680 && vgParent.isFocusableInTouchMode()) { 3681 return vgParent; 3682 } 3683 if (vgParent.isRootNamespace()) { 3684 return null; 3685 } else { 3686 parent = vgParent.getParent(); 3687 } 3688 } 3689 return null; 3690 } 3691 3692 private boolean leaveTouchMode() { 3693 if (mView != null) { 3694 if (mView.hasFocus()) { 3695 View focusedView = mView.findFocus(); 3696 if (!(focusedView instanceof ViewGroup)) { 3697 // some view has focus, let it keep it 3698 return false; 3699 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3700 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3701 // some view group has focus, and doesn't prefer its children 3702 // over itself for focus, so let them keep it. 3703 return false; 3704 } 3705 } 3706 3707 // find the best view to give focus to in this brave new non-touch-mode 3708 // world 3709 final View focused = focusSearch(null, View.FOCUS_DOWN); 3710 if (focused != null) { 3711 return focused.requestFocus(View.FOCUS_DOWN); 3712 } 3713 } 3714 return false; 3715 } 3716 3717 /** 3718 * Base class for implementing a stage in the chain of responsibility 3719 * for processing input events. 3720 * <p> 3721 * Events are delivered to the stage by the {@link #deliver} method. The stage 3722 * then has the choice of finishing the event or forwarding it to the next stage. 3723 * </p> 3724 */ 3725 abstract class InputStage { 3726 private final InputStage mNext; 3727 3728 protected static final int FORWARD = 0; 3729 protected static final int FINISH_HANDLED = 1; 3730 protected static final int FINISH_NOT_HANDLED = 2; 3731 3732 /** 3733 * Creates an input stage. 3734 * @param next The next stage to which events should be forwarded. 3735 */ 3736 public InputStage(InputStage next) { 3737 mNext = next; 3738 } 3739 3740 /** 3741 * Delivers an event to be processed. 3742 */ 3743 public final void deliver(QueuedInputEvent q) { 3744 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3745 forward(q); 3746 } else if (shouldDropInputEvent(q)) { 3747 finish(q, false); 3748 } else { 3749 apply(q, onProcess(q)); 3750 } 3751 } 3752 3753 /** 3754 * Marks the the input event as finished then forwards it to the next stage. 3755 */ 3756 protected void finish(QueuedInputEvent q, boolean handled) { 3757 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3758 if (handled) { 3759 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3760 } 3761 forward(q); 3762 } 3763 3764 /** 3765 * Forwards the event to the next stage. 3766 */ 3767 protected void forward(QueuedInputEvent q) { 3768 onDeliverToNext(q); 3769 } 3770 3771 /** 3772 * Applies a result code from {@link #onProcess} to the specified event. 3773 */ 3774 protected void apply(QueuedInputEvent q, int result) { 3775 if (result == FORWARD) { 3776 forward(q); 3777 } else if (result == FINISH_HANDLED) { 3778 finish(q, true); 3779 } else if (result == FINISH_NOT_HANDLED) { 3780 finish(q, false); 3781 } else { 3782 throw new IllegalArgumentException("Invalid result: " + result); 3783 } 3784 } 3785 3786 /** 3787 * Called when an event is ready to be processed. 3788 * @return A result code indicating how the event was handled. 3789 */ 3790 protected int onProcess(QueuedInputEvent q) { 3791 return FORWARD; 3792 } 3793 3794 /** 3795 * Called when an event is being delivered to the next stage. 3796 */ 3797 protected void onDeliverToNext(QueuedInputEvent q) { 3798 if (DEBUG_INPUT_STAGES) { 3799 Log.v(mTag, "Done with " + getClass().getSimpleName() + ". " + q); 3800 } 3801 if (mNext != null) { 3802 mNext.deliver(q); 3803 } else { 3804 finishInputEvent(q); 3805 } 3806 } 3807 3808 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3809 if (mView == null || !mAdded) { 3810 Slog.w(mTag, "Dropping event due to root view being removed: " + q.mEvent); 3811 return true; 3812 } else if ((!mAttachInfo.mHasWindowFocus 3813 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) || mStopped 3814 || (mIsAmbientMode && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_BUTTON)) 3815 || (mPausedForTransition && !isBack(q.mEvent))) { 3816 // This is a focus event and the window doesn't currently have input focus or 3817 // has stopped. This could be an event that came back from the previous stage 3818 // but the window has lost focus or stopped in the meantime. 3819 if (isTerminalInputEvent(q.mEvent)) { 3820 // Don't drop terminal input events, however mark them as canceled. 3821 q.mEvent.cancel(); 3822 Slog.w(mTag, "Cancelling event due to no window focus: " + q.mEvent); 3823 return false; 3824 } 3825 3826 // Drop non-terminal input events. 3827 Slog.w(mTag, "Dropping event due to no window focus: " + q.mEvent); 3828 return true; 3829 } 3830 return false; 3831 } 3832 3833 void dump(String prefix, PrintWriter writer) { 3834 if (mNext != null) { 3835 mNext.dump(prefix, writer); 3836 } 3837 } 3838 3839 private boolean isBack(InputEvent event) { 3840 if (event instanceof KeyEvent) { 3841 return ((KeyEvent) event).getKeyCode() == KeyEvent.KEYCODE_BACK; 3842 } else { 3843 return false; 3844 } 3845 } 3846 } 3847 3848 /** 3849 * Base class for implementing an input pipeline stage that supports 3850 * asynchronous and out-of-order processing of input events. 3851 * <p> 3852 * In addition to what a normal input stage can do, an asynchronous 3853 * input stage may also defer an input event that has been delivered to it 3854 * and finish or forward it later. 3855 * </p> 3856 */ 3857 abstract class AsyncInputStage extends InputStage { 3858 private final String mTraceCounter; 3859 3860 private QueuedInputEvent mQueueHead; 3861 private QueuedInputEvent mQueueTail; 3862 private int mQueueLength; 3863 3864 protected static final int DEFER = 3; 3865 3866 /** 3867 * Creates an asynchronous input stage. 3868 * @param next The next stage to which events should be forwarded. 3869 * @param traceCounter The name of a counter to record the size of 3870 * the queue of pending events. 3871 */ 3872 public AsyncInputStage(InputStage next, String traceCounter) { 3873 super(next); 3874 mTraceCounter = traceCounter; 3875 } 3876 3877 /** 3878 * Marks the event as deferred, which is to say that it will be handled 3879 * asynchronously. The caller is responsible for calling {@link #forward} 3880 * or {@link #finish} later when it is done handling the event. 3881 */ 3882 protected void defer(QueuedInputEvent q) { 3883 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3884 enqueue(q); 3885 } 3886 3887 @Override 3888 protected void forward(QueuedInputEvent q) { 3889 // Clear the deferred flag. 3890 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3891 3892 // Fast path if the queue is empty. 3893 QueuedInputEvent curr = mQueueHead; 3894 if (curr == null) { 3895 super.forward(q); 3896 return; 3897 } 3898 3899 // Determine whether the event must be serialized behind any others 3900 // before it can be delivered to the next stage. This is done because 3901 // deferred events might be handled out of order by the stage. 3902 final int deviceId = q.mEvent.getDeviceId(); 3903 QueuedInputEvent prev = null; 3904 boolean blocked = false; 3905 while (curr != null && curr != q) { 3906 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3907 blocked = true; 3908 } 3909 prev = curr; 3910 curr = curr.mNext; 3911 } 3912 3913 // If the event is blocked, then leave it in the queue to be delivered later. 3914 // Note that the event might not yet be in the queue if it was not previously 3915 // deferred so we will enqueue it if needed. 3916 if (blocked) { 3917 if (curr == null) { 3918 enqueue(q); 3919 } 3920 return; 3921 } 3922 3923 // The event is not blocked. Deliver it immediately. 3924 if (curr != null) { 3925 curr = curr.mNext; 3926 dequeue(q, prev); 3927 } 3928 super.forward(q); 3929 3930 // Dequeuing this event may have unblocked successors. Deliver them. 3931 while (curr != null) { 3932 if (deviceId == curr.mEvent.getDeviceId()) { 3933 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3934 break; 3935 } 3936 QueuedInputEvent next = curr.mNext; 3937 dequeue(curr, prev); 3938 super.forward(curr); 3939 curr = next; 3940 } else { 3941 prev = curr; 3942 curr = curr.mNext; 3943 } 3944 } 3945 } 3946 3947 @Override 3948 protected void apply(QueuedInputEvent q, int result) { 3949 if (result == DEFER) { 3950 defer(q); 3951 } else { 3952 super.apply(q, result); 3953 } 3954 } 3955 3956 private void enqueue(QueuedInputEvent q) { 3957 if (mQueueTail == null) { 3958 mQueueHead = q; 3959 mQueueTail = q; 3960 } else { 3961 mQueueTail.mNext = q; 3962 mQueueTail = q; 3963 } 3964 3965 mQueueLength += 1; 3966 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3967 } 3968 3969 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3970 if (prev == null) { 3971 mQueueHead = q.mNext; 3972 } else { 3973 prev.mNext = q.mNext; 3974 } 3975 if (mQueueTail == q) { 3976 mQueueTail = prev; 3977 } 3978 q.mNext = null; 3979 3980 mQueueLength -= 1; 3981 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3982 } 3983 3984 @Override 3985 void dump(String prefix, PrintWriter writer) { 3986 writer.print(prefix); 3987 writer.print(getClass().getName()); 3988 writer.print(": mQueueLength="); 3989 writer.println(mQueueLength); 3990 3991 super.dump(prefix, writer); 3992 } 3993 } 3994 3995 /** 3996 * Delivers pre-ime input events to a native activity. 3997 * Does not support pointer events. 3998 */ 3999 final class NativePreImeInputStage extends AsyncInputStage 4000 implements InputQueue.FinishedInputEventCallback { 4001 public NativePreImeInputStage(InputStage next, String traceCounter) { 4002 super(next, traceCounter); 4003 } 4004 4005 @Override 4006 protected int onProcess(QueuedInputEvent q) { 4007 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 4008 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 4009 return DEFER; 4010 } 4011 return FORWARD; 4012 } 4013 4014 @Override 4015 public void onFinishedInputEvent(Object token, boolean handled) { 4016 QueuedInputEvent q = (QueuedInputEvent)token; 4017 if (handled) { 4018 finish(q, true); 4019 return; 4020 } 4021 forward(q); 4022 } 4023 } 4024 4025 /** 4026 * Delivers pre-ime input events to the view hierarchy. 4027 * Does not support pointer events. 4028 */ 4029 final class ViewPreImeInputStage extends InputStage { 4030 public ViewPreImeInputStage(InputStage next) { 4031 super(next); 4032 } 4033 4034 @Override 4035 protected int onProcess(QueuedInputEvent q) { 4036 if (q.mEvent instanceof KeyEvent) { 4037 return processKeyEvent(q); 4038 } 4039 return FORWARD; 4040 } 4041 4042 private int processKeyEvent(QueuedInputEvent q) { 4043 final KeyEvent event = (KeyEvent)q.mEvent; 4044 if (mView.dispatchKeyEventPreIme(event)) { 4045 return FINISH_HANDLED; 4046 } 4047 return FORWARD; 4048 } 4049 } 4050 4051 /** 4052 * Delivers input events to the ime. 4053 * Does not support pointer events. 4054 */ 4055 final class ImeInputStage extends AsyncInputStage 4056 implements InputMethodManager.FinishedInputEventCallback { 4057 public ImeInputStage(InputStage next, String traceCounter) { 4058 super(next, traceCounter); 4059 } 4060 4061 @Override 4062 protected int onProcess(QueuedInputEvent q) { 4063 if (mLastWasImTarget && !isInLocalFocusMode()) { 4064 InputMethodManager imm = InputMethodManager.peekInstance(); 4065 if (imm != null) { 4066 final InputEvent event = q.mEvent; 4067 if (DEBUG_IMF) Log.v(mTag, "Sending input event to IME: " + event); 4068 int result = imm.dispatchInputEvent(event, q, this, mHandler); 4069 if (result == InputMethodManager.DISPATCH_HANDLED) { 4070 return FINISH_HANDLED; 4071 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 4072 // The IME could not handle it, so skip along to the next InputStage 4073 return FORWARD; 4074 } else { 4075 return DEFER; // callback will be invoked later 4076 } 4077 } 4078 } 4079 return FORWARD; 4080 } 4081 4082 @Override 4083 public void onFinishedInputEvent(Object token, boolean handled) { 4084 QueuedInputEvent q = (QueuedInputEvent)token; 4085 if (handled) { 4086 finish(q, true); 4087 return; 4088 } 4089 forward(q); 4090 } 4091 } 4092 4093 /** 4094 * Performs early processing of post-ime input events. 4095 */ 4096 final class EarlyPostImeInputStage extends InputStage { 4097 public EarlyPostImeInputStage(InputStage next) { 4098 super(next); 4099 } 4100 4101 @Override 4102 protected int onProcess(QueuedInputEvent q) { 4103 if (q.mEvent instanceof KeyEvent) { 4104 return processKeyEvent(q); 4105 } else { 4106 final int source = q.mEvent.getSource(); 4107 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4108 return processPointerEvent(q); 4109 } 4110 } 4111 return FORWARD; 4112 } 4113 4114 private int processKeyEvent(QueuedInputEvent q) { 4115 final KeyEvent event = (KeyEvent)q.mEvent; 4116 4117 // If the key's purpose is to exit touch mode then we consume it 4118 // and consider it handled. 4119 if (checkForLeavingTouchModeAndConsume(event)) { 4120 return FINISH_HANDLED; 4121 } 4122 4123 // Make sure the fallback event policy sees all keys that will be 4124 // delivered to the view hierarchy. 4125 mFallbackEventHandler.preDispatchKeyEvent(event); 4126 return FORWARD; 4127 } 4128 4129 private int processPointerEvent(QueuedInputEvent q) { 4130 final MotionEvent event = (MotionEvent)q.mEvent; 4131 4132 // Translate the pointer event for compatibility, if needed. 4133 if (mTranslator != null) { 4134 mTranslator.translateEventInScreenToAppWindow(event); 4135 } 4136 4137 // Enter touch mode on down or scroll. 4138 final int action = event.getAction(); 4139 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 4140 ensureTouchMode(true); 4141 } 4142 4143 // Offset the scroll position. 4144 if (mCurScrollY != 0) { 4145 event.offsetLocation(0, mCurScrollY); 4146 } 4147 4148 // Remember the touch position for possible drag-initiation. 4149 if (event.isTouchEvent()) { 4150 mLastTouchPoint.x = event.getRawX(); 4151 mLastTouchPoint.y = event.getRawY(); 4152 mLastTouchSource = event.getSource(); 4153 } 4154 return FORWARD; 4155 } 4156 } 4157 4158 /** 4159 * Delivers post-ime input events to a native activity. 4160 */ 4161 final class NativePostImeInputStage extends AsyncInputStage 4162 implements InputQueue.FinishedInputEventCallback { 4163 public NativePostImeInputStage(InputStage next, String traceCounter) { 4164 super(next, traceCounter); 4165 } 4166 4167 @Override 4168 protected int onProcess(QueuedInputEvent q) { 4169 if (mInputQueue != null) { 4170 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 4171 return DEFER; 4172 } 4173 return FORWARD; 4174 } 4175 4176 @Override 4177 public void onFinishedInputEvent(Object token, boolean handled) { 4178 QueuedInputEvent q = (QueuedInputEvent)token; 4179 if (handled) { 4180 finish(q, true); 4181 return; 4182 } 4183 forward(q); 4184 } 4185 } 4186 4187 /** 4188 * Delivers post-ime input events to the view hierarchy. 4189 */ 4190 final class ViewPostImeInputStage extends InputStage { 4191 public ViewPostImeInputStage(InputStage next) { 4192 super(next); 4193 } 4194 4195 @Override 4196 protected int onProcess(QueuedInputEvent q) { 4197 if (q.mEvent instanceof KeyEvent) { 4198 return processKeyEvent(q); 4199 } else { 4200 final int source = q.mEvent.getSource(); 4201 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4202 return processPointerEvent(q); 4203 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4204 return processTrackballEvent(q); 4205 } else { 4206 return processGenericMotionEvent(q); 4207 } 4208 } 4209 } 4210 4211 @Override 4212 protected void onDeliverToNext(QueuedInputEvent q) { 4213 if (mUnbufferedInputDispatch 4214 && q.mEvent instanceof MotionEvent 4215 && ((MotionEvent)q.mEvent).isTouchEvent() 4216 && isTerminalInputEvent(q.mEvent)) { 4217 mUnbufferedInputDispatch = false; 4218 scheduleConsumeBatchedInput(); 4219 } 4220 super.onDeliverToNext(q); 4221 } 4222 4223 private int processKeyEvent(QueuedInputEvent q) { 4224 final KeyEvent event = (KeyEvent)q.mEvent; 4225 4226 // Deliver the key to the view hierarchy. 4227 if (mView.dispatchKeyEvent(event)) { 4228 return FINISH_HANDLED; 4229 } 4230 4231 if (shouldDropInputEvent(q)) { 4232 return FINISH_NOT_HANDLED; 4233 } 4234 4235 // If the Control modifier is held, try to interpret the key as a shortcut. 4236 if (event.getAction() == KeyEvent.ACTION_DOWN 4237 && event.isCtrlPressed() 4238 && event.getRepeatCount() == 0 4239 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4240 if (mView.dispatchKeyShortcutEvent(event)) { 4241 return FINISH_HANDLED; 4242 } 4243 if (shouldDropInputEvent(q)) { 4244 return FINISH_NOT_HANDLED; 4245 } 4246 } 4247 4248 // Apply the fallback event policy. 4249 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4250 return FINISH_HANDLED; 4251 } 4252 if (shouldDropInputEvent(q)) { 4253 return FINISH_NOT_HANDLED; 4254 } 4255 4256 // Handle automatic focus changes. 4257 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4258 int direction = 0; 4259 switch (event.getKeyCode()) { 4260 case KeyEvent.KEYCODE_DPAD_LEFT: 4261 if (event.hasNoModifiers()) { 4262 direction = View.FOCUS_LEFT; 4263 } 4264 break; 4265 case KeyEvent.KEYCODE_DPAD_RIGHT: 4266 if (event.hasNoModifiers()) { 4267 direction = View.FOCUS_RIGHT; 4268 } 4269 break; 4270 case KeyEvent.KEYCODE_DPAD_UP: 4271 if (event.hasNoModifiers()) { 4272 direction = View.FOCUS_UP; 4273 } 4274 break; 4275 case KeyEvent.KEYCODE_DPAD_DOWN: 4276 if (event.hasNoModifiers()) { 4277 direction = View.FOCUS_DOWN; 4278 } 4279 break; 4280 case KeyEvent.KEYCODE_TAB: 4281 if (event.hasNoModifiers()) { 4282 direction = View.FOCUS_FORWARD; 4283 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4284 direction = View.FOCUS_BACKWARD; 4285 } 4286 break; 4287 } 4288 if (direction != 0) { 4289 View focused = mView.findFocus(); 4290 if (focused != null) { 4291 View v = focused.focusSearch(direction); 4292 if (v != null && v != focused) { 4293 // do the math the get the interesting rect 4294 // of previous focused into the coord system of 4295 // newly focused view 4296 focused.getFocusedRect(mTempRect); 4297 if (mView instanceof ViewGroup) { 4298 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4299 focused, mTempRect); 4300 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4301 v, mTempRect); 4302 } 4303 if (v.requestFocus(direction, mTempRect)) { 4304 playSoundEffect(SoundEffectConstants 4305 .getContantForFocusDirection(direction)); 4306 return FINISH_HANDLED; 4307 } 4308 } 4309 4310 // Give the focused view a last chance to handle the dpad key. 4311 if (mView.dispatchUnhandledMove(focused, direction)) { 4312 return FINISH_HANDLED; 4313 } 4314 } else { 4315 // find the best view to give focus to in this non-touch-mode with no-focus 4316 View v = focusSearch(null, direction); 4317 if (v != null && v.requestFocus(direction)) { 4318 return FINISH_HANDLED; 4319 } 4320 } 4321 } 4322 } 4323 return FORWARD; 4324 } 4325 4326 private int processPointerEvent(QueuedInputEvent q) { 4327 final MotionEvent event = (MotionEvent)q.mEvent; 4328 4329 mAttachInfo.mUnbufferedDispatchRequested = false; 4330 final View eventTarget = 4331 (event.isFromSource(InputDevice.SOURCE_MOUSE) && mCapturingView != null) ? 4332 mCapturingView : mView; 4333 mAttachInfo.mHandlingPointerEvent = true; 4334 boolean handled = eventTarget.dispatchPointerEvent(event); 4335 maybeUpdatePointerIcon(event); 4336 mAttachInfo.mHandlingPointerEvent = false; 4337 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4338 mUnbufferedInputDispatch = true; 4339 if (mConsumeBatchedInputScheduled) { 4340 scheduleConsumeBatchedInputImmediately(); 4341 } 4342 } 4343 return handled ? FINISH_HANDLED : FORWARD; 4344 } 4345 4346 private void maybeUpdatePointerIcon(MotionEvent event) { 4347 if (event.getPointerCount() == 1 4348 && event.isFromSource(InputDevice.SOURCE_MOUSE)) { 4349 if (event.getActionMasked() == MotionEvent.ACTION_HOVER_ENTER 4350 || event.getActionMasked() == MotionEvent.ACTION_HOVER_EXIT) { 4351 // Other apps or the window manager may change the icon shape outside of 4352 // this app, therefore the icon shape has to be reset on enter/exit event. 4353 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4354 } 4355 4356 if (event.getActionMasked() != MotionEvent.ACTION_HOVER_EXIT) { 4357 if (!updatePointerIcon(event) && 4358 event.getActionMasked() == MotionEvent.ACTION_HOVER_MOVE) { 4359 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4360 } 4361 } 4362 } 4363 } 4364 4365 private int processTrackballEvent(QueuedInputEvent q) { 4366 final MotionEvent event = (MotionEvent)q.mEvent; 4367 4368 if (mView.dispatchTrackballEvent(event)) { 4369 return FINISH_HANDLED; 4370 } 4371 return FORWARD; 4372 } 4373 4374 private int processGenericMotionEvent(QueuedInputEvent q) { 4375 final MotionEvent event = (MotionEvent)q.mEvent; 4376 4377 // Deliver the event to the view. 4378 if (mView.dispatchGenericMotionEvent(event)) { 4379 return FINISH_HANDLED; 4380 } 4381 return FORWARD; 4382 } 4383 } 4384 4385 private void resetPointerIcon(MotionEvent event) { 4386 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4387 updatePointerIcon(event); 4388 } 4389 4390 private boolean updatePointerIcon(MotionEvent event) { 4391 final float x = event.getX(); 4392 final float y = event.getY(); 4393 if (mView == null) { 4394 // E.g. click outside a popup to dismiss it 4395 Slog.d(mTag, "updatePointerIcon called after view was removed"); 4396 return false; 4397 } 4398 if (x < 0 || x >= mView.getWidth() || y < 0 || y >= mView.getHeight()) { 4399 // E.g. when moving window divider with mouse 4400 Slog.d(mTag, "updatePointerIcon called with position out of bounds"); 4401 return false; 4402 } 4403 final PointerIcon pointerIcon = mView.getPointerIcon(event, x, y); 4404 final int pointerShape = (pointerIcon != null) ? 4405 pointerIcon.getStyle() : PointerIcon.STYLE_DEFAULT; 4406 4407 if (mPointerIconShape != pointerShape) { 4408 mPointerIconShape = pointerShape; 4409 if (mPointerIconShape != PointerIcon.STYLE_CUSTOM) { 4410 mCustomPointerIcon = null; 4411 InputManager.getInstance().setPointerIconShape(pointerShape); 4412 return true; 4413 } 4414 } 4415 if (mPointerIconShape == PointerIcon.STYLE_CUSTOM && 4416 !pointerIcon.equals(mCustomPointerIcon)) { 4417 mCustomPointerIcon = pointerIcon; 4418 InputManager.getInstance().setCustomPointerIcon(mCustomPointerIcon); 4419 } 4420 return true; 4421 } 4422 4423 /** 4424 * Performs synthesis of new input events from unhandled input events. 4425 */ 4426 final class SyntheticInputStage extends InputStage { 4427 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4428 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4429 private final SyntheticTouchNavigationHandler mTouchNavigation = 4430 new SyntheticTouchNavigationHandler(); 4431 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4432 4433 public SyntheticInputStage() { 4434 super(null); 4435 } 4436 4437 @Override 4438 protected int onProcess(QueuedInputEvent q) { 4439 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4440 if (q.mEvent instanceof MotionEvent) { 4441 final MotionEvent event = (MotionEvent)q.mEvent; 4442 final int source = event.getSource(); 4443 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4444 mTrackball.process(event); 4445 return FINISH_HANDLED; 4446 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4447 mJoystick.process(event); 4448 return FINISH_HANDLED; 4449 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4450 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4451 mTouchNavigation.process(event); 4452 return FINISH_HANDLED; 4453 } 4454 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4455 mKeyboard.process((KeyEvent)q.mEvent); 4456 return FINISH_HANDLED; 4457 } 4458 4459 return FORWARD; 4460 } 4461 4462 @Override 4463 protected void onDeliverToNext(QueuedInputEvent q) { 4464 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4465 // Cancel related synthetic events if any prior stage has handled the event. 4466 if (q.mEvent instanceof MotionEvent) { 4467 final MotionEvent event = (MotionEvent)q.mEvent; 4468 final int source = event.getSource(); 4469 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4470 mTrackball.cancel(event); 4471 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4472 mJoystick.cancel(event); 4473 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4474 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4475 mTouchNavigation.cancel(event); 4476 } 4477 } 4478 } 4479 super.onDeliverToNext(q); 4480 } 4481 } 4482 4483 /** 4484 * Creates dpad events from unhandled trackball movements. 4485 */ 4486 final class SyntheticTrackballHandler { 4487 private final TrackballAxis mX = new TrackballAxis(); 4488 private final TrackballAxis mY = new TrackballAxis(); 4489 private long mLastTime; 4490 4491 public void process(MotionEvent event) { 4492 // Translate the trackball event into DPAD keys and try to deliver those. 4493 long curTime = SystemClock.uptimeMillis(); 4494 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4495 // It has been too long since the last movement, 4496 // so restart at the beginning. 4497 mX.reset(0); 4498 mY.reset(0); 4499 mLastTime = curTime; 4500 } 4501 4502 final int action = event.getAction(); 4503 final int metaState = event.getMetaState(); 4504 switch (action) { 4505 case MotionEvent.ACTION_DOWN: 4506 mX.reset(2); 4507 mY.reset(2); 4508 enqueueInputEvent(new KeyEvent(curTime, curTime, 4509 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4510 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4511 InputDevice.SOURCE_KEYBOARD)); 4512 break; 4513 case MotionEvent.ACTION_UP: 4514 mX.reset(2); 4515 mY.reset(2); 4516 enqueueInputEvent(new KeyEvent(curTime, curTime, 4517 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4518 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4519 InputDevice.SOURCE_KEYBOARD)); 4520 break; 4521 } 4522 4523 if (DEBUG_TRACKBALL) Log.v(mTag, "TB X=" + mX.position + " step=" 4524 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4525 + " move=" + event.getX() 4526 + " / Y=" + mY.position + " step=" 4527 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4528 + " move=" + event.getY()); 4529 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4530 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4531 4532 // Generate DPAD events based on the trackball movement. 4533 // We pick the axis that has moved the most as the direction of 4534 // the DPAD. When we generate DPAD events for one axis, then the 4535 // other axis is reset -- we don't want to perform DPAD jumps due 4536 // to slight movements in the trackball when making major movements 4537 // along the other axis. 4538 int keycode = 0; 4539 int movement = 0; 4540 float accel = 1; 4541 if (xOff > yOff) { 4542 movement = mX.generate(); 4543 if (movement != 0) { 4544 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4545 : KeyEvent.KEYCODE_DPAD_LEFT; 4546 accel = mX.acceleration; 4547 mY.reset(2); 4548 } 4549 } else if (yOff > 0) { 4550 movement = mY.generate(); 4551 if (movement != 0) { 4552 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4553 : KeyEvent.KEYCODE_DPAD_UP; 4554 accel = mY.acceleration; 4555 mX.reset(2); 4556 } 4557 } 4558 4559 if (keycode != 0) { 4560 if (movement < 0) movement = -movement; 4561 int accelMovement = (int)(movement * accel); 4562 if (DEBUG_TRACKBALL) Log.v(mTag, "Move: movement=" + movement 4563 + " accelMovement=" + accelMovement 4564 + " accel=" + accel); 4565 if (accelMovement > movement) { 4566 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4567 + keycode); 4568 movement--; 4569 int repeatCount = accelMovement - movement; 4570 enqueueInputEvent(new KeyEvent(curTime, curTime, 4571 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4572 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4573 InputDevice.SOURCE_KEYBOARD)); 4574 } 4575 while (movement > 0) { 4576 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4577 + keycode); 4578 movement--; 4579 curTime = SystemClock.uptimeMillis(); 4580 enqueueInputEvent(new KeyEvent(curTime, curTime, 4581 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4582 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4583 InputDevice.SOURCE_KEYBOARD)); 4584 enqueueInputEvent(new KeyEvent(curTime, curTime, 4585 KeyEvent.ACTION_UP, keycode, 0, metaState, 4586 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4587 InputDevice.SOURCE_KEYBOARD)); 4588 } 4589 mLastTime = curTime; 4590 } 4591 } 4592 4593 public void cancel(MotionEvent event) { 4594 mLastTime = Integer.MIN_VALUE; 4595 4596 // If we reach this, we consumed a trackball event. 4597 // Because we will not translate the trackball event into a key event, 4598 // touch mode will not exit, so we exit touch mode here. 4599 if (mView != null && mAdded) { 4600 ensureTouchMode(false); 4601 } 4602 } 4603 } 4604 4605 /** 4606 * Maintains state information for a single trackball axis, generating 4607 * discrete (DPAD) movements based on raw trackball motion. 4608 */ 4609 static final class TrackballAxis { 4610 /** 4611 * The maximum amount of acceleration we will apply. 4612 */ 4613 static final float MAX_ACCELERATION = 20; 4614 4615 /** 4616 * The maximum amount of time (in milliseconds) between events in order 4617 * for us to consider the user to be doing fast trackball movements, 4618 * and thus apply an acceleration. 4619 */ 4620 static final long FAST_MOVE_TIME = 150; 4621 4622 /** 4623 * Scaling factor to the time (in milliseconds) between events to how 4624 * much to multiple/divide the current acceleration. When movement 4625 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4626 * FAST_MOVE_TIME it divides it. 4627 */ 4628 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4629 4630 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4631 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4632 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4633 4634 float position; 4635 float acceleration = 1; 4636 long lastMoveTime = 0; 4637 int step; 4638 int dir; 4639 int nonAccelMovement; 4640 4641 void reset(int _step) { 4642 position = 0; 4643 acceleration = 1; 4644 lastMoveTime = 0; 4645 step = _step; 4646 dir = 0; 4647 } 4648 4649 /** 4650 * Add trackball movement into the state. If the direction of movement 4651 * has been reversed, the state is reset before adding the 4652 * movement (so that you don't have to compensate for any previously 4653 * collected movement before see the result of the movement in the 4654 * new direction). 4655 * 4656 * @return Returns the absolute value of the amount of movement 4657 * collected so far. 4658 */ 4659 float collect(float off, long time, String axis) { 4660 long normTime; 4661 if (off > 0) { 4662 normTime = (long)(off * FAST_MOVE_TIME); 4663 if (dir < 0) { 4664 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4665 position = 0; 4666 step = 0; 4667 acceleration = 1; 4668 lastMoveTime = 0; 4669 } 4670 dir = 1; 4671 } else if (off < 0) { 4672 normTime = (long)((-off) * FAST_MOVE_TIME); 4673 if (dir > 0) { 4674 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4675 position = 0; 4676 step = 0; 4677 acceleration = 1; 4678 lastMoveTime = 0; 4679 } 4680 dir = -1; 4681 } else { 4682 normTime = 0; 4683 } 4684 4685 // The number of milliseconds between each movement that is 4686 // considered "normal" and will not result in any acceleration 4687 // or deceleration, scaled by the offset we have here. 4688 if (normTime > 0) { 4689 long delta = time - lastMoveTime; 4690 lastMoveTime = time; 4691 float acc = acceleration; 4692 if (delta < normTime) { 4693 // The user is scrolling rapidly, so increase acceleration. 4694 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4695 if (scale > 1) acc *= scale; 4696 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4697 + off + " normTime=" + normTime + " delta=" + delta 4698 + " scale=" + scale + " acc=" + acc); 4699 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4700 } else { 4701 // The user is scrolling slowly, so decrease acceleration. 4702 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4703 if (scale > 1) acc /= scale; 4704 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4705 + off + " normTime=" + normTime + " delta=" + delta 4706 + " scale=" + scale + " acc=" + acc); 4707 acceleration = acc > 1 ? acc : 1; 4708 } 4709 } 4710 position += off; 4711 return Math.abs(position); 4712 } 4713 4714 /** 4715 * Generate the number of discrete movement events appropriate for 4716 * the currently collected trackball movement. 4717 * 4718 * @return Returns the number of discrete movements, either positive 4719 * or negative, or 0 if there is not enough trackball movement yet 4720 * for a discrete movement. 4721 */ 4722 int generate() { 4723 int movement = 0; 4724 nonAccelMovement = 0; 4725 do { 4726 final int dir = position >= 0 ? 1 : -1; 4727 switch (step) { 4728 // If we are going to execute the first step, then we want 4729 // to do this as soon as possible instead of waiting for 4730 // a full movement, in order to make things look responsive. 4731 case 0: 4732 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4733 return movement; 4734 } 4735 movement += dir; 4736 nonAccelMovement += dir; 4737 step = 1; 4738 break; 4739 // If we have generated the first movement, then we need 4740 // to wait for the second complete trackball motion before 4741 // generating the second discrete movement. 4742 case 1: 4743 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4744 return movement; 4745 } 4746 movement += dir; 4747 nonAccelMovement += dir; 4748 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4749 step = 2; 4750 break; 4751 // After the first two, we generate discrete movements 4752 // consistently with the trackball, applying an acceleration 4753 // if the trackball is moving quickly. This is a simple 4754 // acceleration on top of what we already compute based 4755 // on how quickly the wheel is being turned, to apply 4756 // a longer increasing acceleration to continuous movement 4757 // in one direction. 4758 default: 4759 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4760 return movement; 4761 } 4762 movement += dir; 4763 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4764 float acc = acceleration; 4765 acc *= 1.1f; 4766 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4767 break; 4768 } 4769 } while (true); 4770 } 4771 } 4772 4773 /** 4774 * Creates dpad events from unhandled joystick movements. 4775 */ 4776 final class SyntheticJoystickHandler extends Handler { 4777 private final static String TAG = "SyntheticJoystickHandler"; 4778 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4779 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4780 4781 private int mLastXDirection; 4782 private int mLastYDirection; 4783 private int mLastXKeyCode; 4784 private int mLastYKeyCode; 4785 4786 public SyntheticJoystickHandler() { 4787 super(true); 4788 } 4789 4790 @Override 4791 public void handleMessage(Message msg) { 4792 switch (msg.what) { 4793 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4794 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4795 KeyEvent oldEvent = (KeyEvent)msg.obj; 4796 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4797 SystemClock.uptimeMillis(), 4798 oldEvent.getRepeatCount() + 1); 4799 if (mAttachInfo.mHasWindowFocus) { 4800 enqueueInputEvent(e); 4801 Message m = obtainMessage(msg.what, e); 4802 m.setAsynchronous(true); 4803 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4804 } 4805 } break; 4806 } 4807 } 4808 4809 public void process(MotionEvent event) { 4810 switch(event.getActionMasked()) { 4811 case MotionEvent.ACTION_CANCEL: 4812 cancel(event); 4813 break; 4814 case MotionEvent.ACTION_MOVE: 4815 update(event, true); 4816 break; 4817 default: 4818 Log.w(mTag, "Unexpected action: " + event.getActionMasked()); 4819 } 4820 } 4821 4822 private void cancel(MotionEvent event) { 4823 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4824 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4825 update(event, false); 4826 } 4827 4828 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4829 final long time = event.getEventTime(); 4830 final int metaState = event.getMetaState(); 4831 final int deviceId = event.getDeviceId(); 4832 final int source = event.getSource(); 4833 4834 int xDirection = joystickAxisValueToDirection( 4835 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4836 if (xDirection == 0) { 4837 xDirection = joystickAxisValueToDirection(event.getX()); 4838 } 4839 4840 int yDirection = joystickAxisValueToDirection( 4841 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4842 if (yDirection == 0) { 4843 yDirection = joystickAxisValueToDirection(event.getY()); 4844 } 4845 4846 if (xDirection != mLastXDirection) { 4847 if (mLastXKeyCode != 0) { 4848 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4849 enqueueInputEvent(new KeyEvent(time, time, 4850 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4851 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4852 mLastXKeyCode = 0; 4853 } 4854 4855 mLastXDirection = xDirection; 4856 4857 if (xDirection != 0 && synthesizeNewKeys) { 4858 mLastXKeyCode = xDirection > 0 4859 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4860 final KeyEvent e = new KeyEvent(time, time, 4861 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4862 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4863 enqueueInputEvent(e); 4864 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4865 m.setAsynchronous(true); 4866 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4867 } 4868 } 4869 4870 if (yDirection != mLastYDirection) { 4871 if (mLastYKeyCode != 0) { 4872 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4873 enqueueInputEvent(new KeyEvent(time, time, 4874 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4875 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4876 mLastYKeyCode = 0; 4877 } 4878 4879 mLastYDirection = yDirection; 4880 4881 if (yDirection != 0 && synthesizeNewKeys) { 4882 mLastYKeyCode = yDirection > 0 4883 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4884 final KeyEvent e = new KeyEvent(time, time, 4885 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4886 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4887 enqueueInputEvent(e); 4888 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4889 m.setAsynchronous(true); 4890 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4891 } 4892 } 4893 } 4894 4895 private int joystickAxisValueToDirection(float value) { 4896 if (value >= 0.5f) { 4897 return 1; 4898 } else if (value <= -0.5f) { 4899 return -1; 4900 } else { 4901 return 0; 4902 } 4903 } 4904 } 4905 4906 /** 4907 * Creates dpad events from unhandled touch navigation movements. 4908 */ 4909 final class SyntheticTouchNavigationHandler extends Handler { 4910 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4911 private static final boolean LOCAL_DEBUG = false; 4912 4913 // Assumed nominal width and height in millimeters of a touch navigation pad, 4914 // if no resolution information is available from the input system. 4915 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4916 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4917 4918 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4919 4920 // The nominal distance traveled to move by one unit. 4921 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4922 4923 // Minimum and maximum fling velocity in ticks per second. 4924 // The minimum velocity should be set such that we perform enough ticks per 4925 // second that the fling appears to be fluid. For example, if we set the minimum 4926 // to 2 ticks per second, then there may be up to half a second delay between the next 4927 // to last and last ticks which is noticeably discrete and jerky. This value should 4928 // probably not be set to anything less than about 4. 4929 // If fling accuracy is a problem then consider tuning the tick distance instead. 4930 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4931 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4932 4933 // Fling velocity decay factor applied after each new key is emitted. 4934 // This parameter controls the deceleration and overall duration of the fling. 4935 // The fling stops automatically when its velocity drops below the minimum 4936 // fling velocity defined above. 4937 private static final float FLING_TICK_DECAY = 0.8f; 4938 4939 /* The input device that we are tracking. */ 4940 4941 private int mCurrentDeviceId = -1; 4942 private int mCurrentSource; 4943 private boolean mCurrentDeviceSupported; 4944 4945 /* Configuration for the current input device. */ 4946 4947 // The scaled tick distance. A movement of this amount should generally translate 4948 // into a single dpad event in a given direction. 4949 private float mConfigTickDistance; 4950 4951 // The minimum and maximum scaled fling velocity. 4952 private float mConfigMinFlingVelocity; 4953 private float mConfigMaxFlingVelocity; 4954 4955 /* Tracking state. */ 4956 4957 // The velocity tracker for detecting flings. 4958 private VelocityTracker mVelocityTracker; 4959 4960 // The active pointer id, or -1 if none. 4961 private int mActivePointerId = -1; 4962 4963 // Location where tracking started. 4964 private float mStartX; 4965 private float mStartY; 4966 4967 // Most recently observed position. 4968 private float mLastX; 4969 private float mLastY; 4970 4971 // Accumulated movement delta since the last direction key was sent. 4972 private float mAccumulatedX; 4973 private float mAccumulatedY; 4974 4975 // Set to true if any movement was delivered to the app. 4976 // Implies that tap slop was exceeded. 4977 private boolean mConsumedMovement; 4978 4979 // The most recently sent key down event. 4980 // The keycode remains set until the direction changes or a fling ends 4981 // so that repeated key events may be generated as required. 4982 private long mPendingKeyDownTime; 4983 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4984 private int mPendingKeyRepeatCount; 4985 private int mPendingKeyMetaState; 4986 4987 // The current fling velocity while a fling is in progress. 4988 private boolean mFlinging; 4989 private float mFlingVelocity; 4990 4991 public SyntheticTouchNavigationHandler() { 4992 super(true); 4993 } 4994 4995 public void process(MotionEvent event) { 4996 // Update the current device information. 4997 final long time = event.getEventTime(); 4998 final int deviceId = event.getDeviceId(); 4999 final int source = event.getSource(); 5000 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 5001 finishKeys(time); 5002 finishTracking(time); 5003 mCurrentDeviceId = deviceId; 5004 mCurrentSource = source; 5005 mCurrentDeviceSupported = false; 5006 InputDevice device = event.getDevice(); 5007 if (device != null) { 5008 // In order to support an input device, we must know certain 5009 // characteristics about it, such as its size and resolution. 5010 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 5011 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 5012 if (xRange != null && yRange != null) { 5013 mCurrentDeviceSupported = true; 5014 5015 // Infer the resolution if it not actually known. 5016 float xRes = xRange.getResolution(); 5017 if (xRes <= 0) { 5018 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 5019 } 5020 float yRes = yRange.getResolution(); 5021 if (yRes <= 0) { 5022 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 5023 } 5024 float nominalRes = (xRes + yRes) * 0.5f; 5025 5026 // Precompute all of the configuration thresholds we will need. 5027 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 5028 mConfigMinFlingVelocity = 5029 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5030 mConfigMaxFlingVelocity = 5031 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5032 5033 if (LOCAL_DEBUG) { 5034 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 5035 + " (" + Integer.toHexString(mCurrentSource) + "): " 5036 + ", mConfigTickDistance=" + mConfigTickDistance 5037 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 5038 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 5039 } 5040 } 5041 } 5042 } 5043 if (!mCurrentDeviceSupported) { 5044 return; 5045 } 5046 5047 // Handle the event. 5048 final int action = event.getActionMasked(); 5049 switch (action) { 5050 case MotionEvent.ACTION_DOWN: { 5051 boolean caughtFling = mFlinging; 5052 finishKeys(time); 5053 finishTracking(time); 5054 mActivePointerId = event.getPointerId(0); 5055 mVelocityTracker = VelocityTracker.obtain(); 5056 mVelocityTracker.addMovement(event); 5057 mStartX = event.getX(); 5058 mStartY = event.getY(); 5059 mLastX = mStartX; 5060 mLastY = mStartY; 5061 mAccumulatedX = 0; 5062 mAccumulatedY = 0; 5063 5064 // If we caught a fling, then pretend that the tap slop has already 5065 // been exceeded to suppress taps whose only purpose is to stop the fling. 5066 mConsumedMovement = caughtFling; 5067 break; 5068 } 5069 5070 case MotionEvent.ACTION_MOVE: 5071 case MotionEvent.ACTION_UP: { 5072 if (mActivePointerId < 0) { 5073 break; 5074 } 5075 final int index = event.findPointerIndex(mActivePointerId); 5076 if (index < 0) { 5077 finishKeys(time); 5078 finishTracking(time); 5079 break; 5080 } 5081 5082 mVelocityTracker.addMovement(event); 5083 final float x = event.getX(index); 5084 final float y = event.getY(index); 5085 mAccumulatedX += x - mLastX; 5086 mAccumulatedY += y - mLastY; 5087 mLastX = x; 5088 mLastY = y; 5089 5090 // Consume any accumulated movement so far. 5091 final int metaState = event.getMetaState(); 5092 consumeAccumulatedMovement(time, metaState); 5093 5094 // Detect taps and flings. 5095 if (action == MotionEvent.ACTION_UP) { 5096 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5097 // It might be a fling. 5098 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 5099 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 5100 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 5101 if (!startFling(time, vx, vy)) { 5102 finishKeys(time); 5103 } 5104 } 5105 finishTracking(time); 5106 } 5107 break; 5108 } 5109 5110 case MotionEvent.ACTION_CANCEL: { 5111 finishKeys(time); 5112 finishTracking(time); 5113 break; 5114 } 5115 } 5116 } 5117 5118 public void cancel(MotionEvent event) { 5119 if (mCurrentDeviceId == event.getDeviceId() 5120 && mCurrentSource == event.getSource()) { 5121 final long time = event.getEventTime(); 5122 finishKeys(time); 5123 finishTracking(time); 5124 } 5125 } 5126 5127 private void finishKeys(long time) { 5128 cancelFling(); 5129 sendKeyUp(time); 5130 } 5131 5132 private void finishTracking(long time) { 5133 if (mActivePointerId >= 0) { 5134 mActivePointerId = -1; 5135 mVelocityTracker.recycle(); 5136 mVelocityTracker = null; 5137 } 5138 } 5139 5140 private void consumeAccumulatedMovement(long time, int metaState) { 5141 final float absX = Math.abs(mAccumulatedX); 5142 final float absY = Math.abs(mAccumulatedY); 5143 if (absX >= absY) { 5144 if (absX >= mConfigTickDistance) { 5145 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 5146 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 5147 mAccumulatedY = 0; 5148 mConsumedMovement = true; 5149 } 5150 } else { 5151 if (absY >= mConfigTickDistance) { 5152 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 5153 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 5154 mAccumulatedX = 0; 5155 mConsumedMovement = true; 5156 } 5157 } 5158 } 5159 5160 private float consumeAccumulatedMovement(long time, int metaState, 5161 float accumulator, int negativeKeyCode, int positiveKeyCode) { 5162 while (accumulator <= -mConfigTickDistance) { 5163 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 5164 accumulator += mConfigTickDistance; 5165 } 5166 while (accumulator >= mConfigTickDistance) { 5167 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 5168 accumulator -= mConfigTickDistance; 5169 } 5170 return accumulator; 5171 } 5172 5173 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 5174 if (mPendingKeyCode != keyCode) { 5175 sendKeyUp(time); 5176 mPendingKeyDownTime = time; 5177 mPendingKeyCode = keyCode; 5178 mPendingKeyRepeatCount = 0; 5179 } else { 5180 mPendingKeyRepeatCount += 1; 5181 } 5182 mPendingKeyMetaState = metaState; 5183 5184 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 5185 // but it doesn't quite make sense when simulating the events in this way. 5186 if (LOCAL_DEBUG) { 5187 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 5188 + ", repeatCount=" + mPendingKeyRepeatCount 5189 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5190 } 5191 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5192 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 5193 mPendingKeyMetaState, mCurrentDeviceId, 5194 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 5195 } 5196 5197 private void sendKeyUp(long time) { 5198 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5199 if (LOCAL_DEBUG) { 5200 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 5201 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5202 } 5203 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5204 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 5205 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 5206 mCurrentSource)); 5207 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5208 } 5209 } 5210 5211 private boolean startFling(long time, float vx, float vy) { 5212 if (LOCAL_DEBUG) { 5213 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 5214 + ", min=" + mConfigMinFlingVelocity); 5215 } 5216 5217 // Flings must be oriented in the same direction as the preceding movements. 5218 switch (mPendingKeyCode) { 5219 case KeyEvent.KEYCODE_DPAD_LEFT: 5220 if (-vx >= mConfigMinFlingVelocity 5221 && Math.abs(vy) < mConfigMinFlingVelocity) { 5222 mFlingVelocity = -vx; 5223 break; 5224 } 5225 return false; 5226 5227 case KeyEvent.KEYCODE_DPAD_RIGHT: 5228 if (vx >= mConfigMinFlingVelocity 5229 && Math.abs(vy) < mConfigMinFlingVelocity) { 5230 mFlingVelocity = vx; 5231 break; 5232 } 5233 return false; 5234 5235 case KeyEvent.KEYCODE_DPAD_UP: 5236 if (-vy >= mConfigMinFlingVelocity 5237 && Math.abs(vx) < mConfigMinFlingVelocity) { 5238 mFlingVelocity = -vy; 5239 break; 5240 } 5241 return false; 5242 5243 case KeyEvent.KEYCODE_DPAD_DOWN: 5244 if (vy >= mConfigMinFlingVelocity 5245 && Math.abs(vx) < mConfigMinFlingVelocity) { 5246 mFlingVelocity = vy; 5247 break; 5248 } 5249 return false; 5250 } 5251 5252 // Post the first fling event. 5253 mFlinging = postFling(time); 5254 return mFlinging; 5255 } 5256 5257 private boolean postFling(long time) { 5258 // The idea here is to estimate the time when the pointer would have 5259 // traveled one tick distance unit given the current fling velocity. 5260 // This effect creates continuity of motion. 5261 if (mFlingVelocity >= mConfigMinFlingVelocity) { 5262 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 5263 postAtTime(mFlingRunnable, time + delay); 5264 if (LOCAL_DEBUG) { 5265 Log.d(LOCAL_TAG, "Posted fling: velocity=" 5266 + mFlingVelocity + ", delay=" + delay 5267 + ", keyCode=" + mPendingKeyCode); 5268 } 5269 return true; 5270 } 5271 return false; 5272 } 5273 5274 private void cancelFling() { 5275 if (mFlinging) { 5276 removeCallbacks(mFlingRunnable); 5277 mFlinging = false; 5278 } 5279 } 5280 5281 private final Runnable mFlingRunnable = new Runnable() { 5282 @Override 5283 public void run() { 5284 final long time = SystemClock.uptimeMillis(); 5285 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5286 mFlingVelocity *= FLING_TICK_DECAY; 5287 if (!postFling(time)) { 5288 mFlinging = false; 5289 finishKeys(time); 5290 } 5291 } 5292 }; 5293 } 5294 5295 final class SyntheticKeyboardHandler { 5296 public void process(KeyEvent event) { 5297 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5298 return; 5299 } 5300 5301 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5302 final int keyCode = event.getKeyCode(); 5303 final int metaState = event.getMetaState(); 5304 5305 // Check for fallback actions specified by the key character map. 5306 KeyCharacterMap.FallbackAction fallbackAction = 5307 kcm.getFallbackAction(keyCode, metaState); 5308 if (fallbackAction != null) { 5309 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5310 KeyEvent fallbackEvent = KeyEvent.obtain( 5311 event.getDownTime(), event.getEventTime(), 5312 event.getAction(), fallbackAction.keyCode, 5313 event.getRepeatCount(), fallbackAction.metaState, 5314 event.getDeviceId(), event.getScanCode(), 5315 flags, event.getSource(), null); 5316 fallbackAction.recycle(); 5317 enqueueInputEvent(fallbackEvent); 5318 } 5319 } 5320 } 5321 5322 /** 5323 * Returns true if the key is used for keyboard navigation. 5324 * @param keyEvent The key event. 5325 * @return True if the key is used for keyboard navigation. 5326 */ 5327 private static boolean isNavigationKey(KeyEvent keyEvent) { 5328 switch (keyEvent.getKeyCode()) { 5329 case KeyEvent.KEYCODE_DPAD_LEFT: 5330 case KeyEvent.KEYCODE_DPAD_RIGHT: 5331 case KeyEvent.KEYCODE_DPAD_UP: 5332 case KeyEvent.KEYCODE_DPAD_DOWN: 5333 case KeyEvent.KEYCODE_DPAD_CENTER: 5334 case KeyEvent.KEYCODE_PAGE_UP: 5335 case KeyEvent.KEYCODE_PAGE_DOWN: 5336 case KeyEvent.KEYCODE_MOVE_HOME: 5337 case KeyEvent.KEYCODE_MOVE_END: 5338 case KeyEvent.KEYCODE_TAB: 5339 case KeyEvent.KEYCODE_SPACE: 5340 case KeyEvent.KEYCODE_ENTER: 5341 return true; 5342 } 5343 return false; 5344 } 5345 5346 /** 5347 * Returns true if the key is used for typing. 5348 * @param keyEvent The key event. 5349 * @return True if the key is used for typing. 5350 */ 5351 private static boolean isTypingKey(KeyEvent keyEvent) { 5352 return keyEvent.getUnicodeChar() > 0; 5353 } 5354 5355 /** 5356 * See if the key event means we should leave touch mode (and leave touch mode if so). 5357 * @param event The key event. 5358 * @return Whether this key event should be consumed (meaning the act of 5359 * leaving touch mode alone is considered the event). 5360 */ 5361 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5362 // Only relevant in touch mode. 5363 if (!mAttachInfo.mInTouchMode) { 5364 return false; 5365 } 5366 5367 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5368 final int action = event.getAction(); 5369 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5370 return false; 5371 } 5372 5373 // Don't leave touch mode if the IME told us not to. 5374 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5375 return false; 5376 } 5377 5378 // If the key can be used for keyboard navigation then leave touch mode 5379 // and select a focused view if needed (in ensureTouchMode). 5380 // When a new focused view is selected, we consume the navigation key because 5381 // navigation doesn't make much sense unless a view already has focus so 5382 // the key's purpose is to set focus. 5383 if (isNavigationKey(event)) { 5384 return ensureTouchMode(false); 5385 } 5386 5387 // If the key can be used for typing then leave touch mode 5388 // and select a focused view if needed (in ensureTouchMode). 5389 // Always allow the view to process the typing key. 5390 if (isTypingKey(event)) { 5391 ensureTouchMode(false); 5392 return false; 5393 } 5394 5395 return false; 5396 } 5397 5398 /* drag/drop */ 5399 void setLocalDragState(Object obj) { 5400 mLocalDragState = obj; 5401 } 5402 5403 private void handleDragEvent(DragEvent event) { 5404 // From the root, only drag start/end/location are dispatched. entered/exited 5405 // are determined and dispatched by the viewgroup hierarchy, who then report 5406 // that back here for ultimate reporting back to the framework. 5407 if (mView != null && mAdded) { 5408 final int what = event.mAction; 5409 5410 if (what == DragEvent.ACTION_DRAG_EXITED) { 5411 // A direct EXITED event means that the window manager knows we've just crossed 5412 // a window boundary, so the current drag target within this one must have 5413 // just been exited. Send it the usual notifications and then we're done 5414 // for now. 5415 mView.dispatchDragEvent(event); 5416 } else { 5417 // Cache the drag description when the operation starts, then fill it in 5418 // on subsequent calls as a convenience 5419 if (what == DragEvent.ACTION_DRAG_STARTED) { 5420 mCurrentDragView = null; // Start the current-recipient tracking 5421 mDragDescription = event.mClipDescription; 5422 } else { 5423 event.mClipDescription = mDragDescription; 5424 } 5425 5426 // For events with a [screen] location, translate into window coordinates 5427 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5428 mDragPoint.set(event.mX, event.mY); 5429 if (mTranslator != null) { 5430 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5431 } 5432 5433 if (mCurScrollY != 0) { 5434 mDragPoint.offset(0, mCurScrollY); 5435 } 5436 5437 event.mX = mDragPoint.x; 5438 event.mY = mDragPoint.y; 5439 } 5440 5441 // Remember who the current drag target is pre-dispatch 5442 final View prevDragView = mCurrentDragView; 5443 5444 // Now dispatch the drag/drop event 5445 boolean result = mView.dispatchDragEvent(event); 5446 5447 // If we changed apparent drag target, tell the OS about it 5448 if (prevDragView != mCurrentDragView) { 5449 try { 5450 if (prevDragView != null) { 5451 mWindowSession.dragRecipientExited(mWindow); 5452 } 5453 if (mCurrentDragView != null) { 5454 mWindowSession.dragRecipientEntered(mWindow); 5455 } 5456 } catch (RemoteException e) { 5457 Slog.e(mTag, "Unable to note drag target change"); 5458 } 5459 } 5460 5461 // Report the drop result when we're done 5462 if (what == DragEvent.ACTION_DROP) { 5463 mDragDescription = null; 5464 try { 5465 Log.i(mTag, "Reporting drop result: " + result); 5466 mWindowSession.reportDropResult(mWindow, result); 5467 } catch (RemoteException e) { 5468 Log.e(mTag, "Unable to report drop result"); 5469 } 5470 } 5471 5472 // When the drag operation ends, reset drag-related state 5473 if (what == DragEvent.ACTION_DRAG_ENDED) { 5474 setLocalDragState(null); 5475 mAttachInfo.mDragToken = null; 5476 if (mAttachInfo.mDragSurface != null) { 5477 mAttachInfo.mDragSurface.release(); 5478 mAttachInfo.mDragSurface = null; 5479 } 5480 } 5481 } 5482 } 5483 event.recycle(); 5484 } 5485 5486 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5487 if (mSeq != args.seq) { 5488 // The sequence has changed, so we need to update our value and make 5489 // sure to do a traversal afterward so the window manager is given our 5490 // most recent data. 5491 mSeq = args.seq; 5492 mAttachInfo.mForceReportNewAttributes = true; 5493 scheduleTraversals(); 5494 } 5495 if (mView == null) return; 5496 if (args.localChanges != 0) { 5497 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5498 } 5499 5500 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5501 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5502 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5503 mView.dispatchSystemUiVisibilityChanged(visibility); 5504 } 5505 } 5506 5507 public void handleDispatchWindowShown() { 5508 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5509 } 5510 5511 public void handleRequestKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 5512 Bundle data = new Bundle(); 5513 ArrayList<KeyboardShortcutGroup> list = new ArrayList<>(); 5514 if (mView != null) { 5515 mView.requestKeyboardShortcuts(list, deviceId); 5516 } 5517 data.putParcelableArrayList(WindowManager.PARCEL_KEY_SHORTCUTS_ARRAY, list); 5518 try { 5519 receiver.send(0, data); 5520 } catch (RemoteException e) { 5521 } 5522 } 5523 5524 public void getLastTouchPoint(Point outLocation) { 5525 outLocation.x = (int) mLastTouchPoint.x; 5526 outLocation.y = (int) mLastTouchPoint.y; 5527 } 5528 5529 public int getLastTouchSource() { 5530 return mLastTouchSource; 5531 } 5532 5533 public void setDragFocus(View newDragTarget) { 5534 if (mCurrentDragView != newDragTarget) { 5535 mCurrentDragView = newDragTarget; 5536 } 5537 } 5538 5539 private AudioManager getAudioManager() { 5540 if (mView == null) { 5541 throw new IllegalStateException("getAudioManager called when there is no mView"); 5542 } 5543 if (mAudioManager == null) { 5544 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5545 } 5546 return mAudioManager; 5547 } 5548 5549 public AccessibilityInteractionController getAccessibilityInteractionController() { 5550 if (mView == null) { 5551 throw new IllegalStateException("getAccessibilityInteractionController" 5552 + " called when there is no mView"); 5553 } 5554 if (mAccessibilityInteractionController == null) { 5555 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5556 } 5557 return mAccessibilityInteractionController; 5558 } 5559 5560 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5561 boolean insetsPending) throws RemoteException { 5562 5563 float appScale = mAttachInfo.mApplicationScale; 5564 boolean restore = false; 5565 if (params != null && mTranslator != null) { 5566 restore = true; 5567 params.backup(); 5568 mTranslator.translateWindowLayout(params); 5569 } 5570 if (params != null) { 5571 if (DBG) Log.d(mTag, "WindowLayout in layoutWindow:" + params); 5572 } 5573 mPendingConfiguration.seq = 0; 5574 //Log.d(mTag, ">>>>>> CALLING relayout"); 5575 if (params != null && mOrigWindowType != params.type) { 5576 // For compatibility with old apps, don't crash here. 5577 if (mTargetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5578 Slog.w(mTag, "Window type can not be changed after " 5579 + "the window is added; ignoring change of " + mView); 5580 params.type = mOrigWindowType; 5581 } 5582 } 5583 int relayoutResult = mWindowSession.relayout( 5584 mWindow, mSeq, params, 5585 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5586 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5587 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5588 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5589 mPendingStableInsets, mPendingOutsets, mPendingBackDropFrame, mPendingConfiguration, 5590 mSurface); 5591 5592 mPendingAlwaysConsumeNavBar = 5593 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_CONSUME_ALWAYS_NAV_BAR) != 0; 5594 5595 //Log.d(mTag, "<<<<<< BACK FROM relayout"); 5596 if (restore) { 5597 params.restore(); 5598 } 5599 5600 if (mTranslator != null) { 5601 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5602 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5603 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5604 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5605 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5606 } 5607 return relayoutResult; 5608 } 5609 5610 /** 5611 * {@inheritDoc} 5612 */ 5613 @Override 5614 public void playSoundEffect(int effectId) { 5615 checkThread(); 5616 5617 try { 5618 final AudioManager audioManager = getAudioManager(); 5619 5620 switch (effectId) { 5621 case SoundEffectConstants.CLICK: 5622 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5623 return; 5624 case SoundEffectConstants.NAVIGATION_DOWN: 5625 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5626 return; 5627 case SoundEffectConstants.NAVIGATION_LEFT: 5628 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5629 return; 5630 case SoundEffectConstants.NAVIGATION_RIGHT: 5631 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5632 return; 5633 case SoundEffectConstants.NAVIGATION_UP: 5634 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5635 return; 5636 default: 5637 throw new IllegalArgumentException("unknown effect id " + effectId + 5638 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5639 } 5640 } catch (IllegalStateException e) { 5641 // Exception thrown by getAudioManager() when mView is null 5642 Log.e(mTag, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5643 e.printStackTrace(); 5644 } 5645 } 5646 5647 /** 5648 * {@inheritDoc} 5649 */ 5650 @Override 5651 public boolean performHapticFeedback(int effectId, boolean always) { 5652 try { 5653 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5654 } catch (RemoteException e) { 5655 return false; 5656 } 5657 } 5658 5659 /** 5660 * {@inheritDoc} 5661 */ 5662 @Override 5663 public View focusSearch(View focused, int direction) { 5664 checkThread(); 5665 if (!(mView instanceof ViewGroup)) { 5666 return null; 5667 } 5668 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5669 } 5670 5671 public void debug() { 5672 mView.debug(); 5673 } 5674 5675 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5676 String innerPrefix = prefix + " "; 5677 writer.print(prefix); writer.println("ViewRoot:"); 5678 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5679 writer.print(" mRemoved="); writer.println(mRemoved); 5680 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5681 writer.println(mConsumeBatchedInputScheduled); 5682 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5683 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5684 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5685 writer.println(mPendingInputEventCount); 5686 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5687 writer.println(mProcessInputEventsScheduled); 5688 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5689 writer.print(mTraversalScheduled); 5690 writer.print(innerPrefix); writer.print("mIsAmbientMode="); 5691 writer.print(mIsAmbientMode); 5692 if (mTraversalScheduled) { 5693 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5694 } else { 5695 writer.println(); 5696 } 5697 mFirstInputStage.dump(innerPrefix, writer); 5698 5699 mChoreographer.dump(prefix, writer); 5700 5701 writer.print(prefix); writer.println("View Hierarchy:"); 5702 dumpViewHierarchy(innerPrefix, writer, mView); 5703 } 5704 5705 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5706 writer.print(prefix); 5707 if (view == null) { 5708 writer.println("null"); 5709 return; 5710 } 5711 writer.println(view.toString()); 5712 if (!(view instanceof ViewGroup)) { 5713 return; 5714 } 5715 ViewGroup grp = (ViewGroup)view; 5716 final int N = grp.getChildCount(); 5717 if (N <= 0) { 5718 return; 5719 } 5720 prefix = prefix + " "; 5721 for (int i=0; i<N; i++) { 5722 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5723 } 5724 } 5725 5726 public void dumpGfxInfo(int[] info) { 5727 info[0] = info[1] = 0; 5728 if (mView != null) { 5729 getGfxInfo(mView, info); 5730 } 5731 } 5732 5733 private static void getGfxInfo(View view, int[] info) { 5734 RenderNode renderNode = view.mRenderNode; 5735 info[0]++; 5736 if (renderNode != null) { 5737 info[1] += renderNode.getDebugSize(); 5738 } 5739 5740 if (view instanceof ViewGroup) { 5741 ViewGroup group = (ViewGroup) view; 5742 5743 int count = group.getChildCount(); 5744 for (int i = 0; i < count; i++) { 5745 getGfxInfo(group.getChildAt(i), info); 5746 } 5747 } 5748 } 5749 5750 /** 5751 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5752 * @return True, request has been queued. False, request has been completed. 5753 */ 5754 boolean die(boolean immediate) { 5755 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5756 // done by dispatchDetachedFromWindow will cause havoc on return. 5757 if (immediate && !mIsInTraversal) { 5758 doDie(); 5759 return false; 5760 } 5761 5762 if (!mIsDrawing) { 5763 destroyHardwareRenderer(); 5764 } else { 5765 Log.e(mTag, "Attempting to destroy the window while drawing!\n" + 5766 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5767 } 5768 mHandler.sendEmptyMessage(MSG_DIE); 5769 return true; 5770 } 5771 5772 void doDie() { 5773 checkThread(); 5774 if (LOCAL_LOGV) Log.v(mTag, "DIE in " + this + " of " + mSurface); 5775 synchronized (this) { 5776 if (mRemoved) { 5777 return; 5778 } 5779 mRemoved = true; 5780 if (mAdded) { 5781 dispatchDetachedFromWindow(); 5782 } 5783 5784 if (mAdded && !mFirst) { 5785 destroyHardwareRenderer(); 5786 5787 if (mView != null) { 5788 int viewVisibility = mView.getVisibility(); 5789 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5790 if (mWindowAttributesChanged || viewVisibilityChanged) { 5791 // If layout params have been changed, first give them 5792 // to the window manager to make sure it has the correct 5793 // animation info. 5794 try { 5795 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5796 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5797 mWindowSession.finishDrawing(mWindow); 5798 } 5799 } catch (RemoteException e) { 5800 } 5801 } 5802 5803 mSurface.release(); 5804 } 5805 } 5806 5807 mAdded = false; 5808 } 5809 WindowManagerGlobal.getInstance().doRemoveView(this); 5810 } 5811 5812 public void requestUpdateConfiguration(Configuration config) { 5813 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5814 mHandler.sendMessage(msg); 5815 } 5816 5817 public void loadSystemProperties() { 5818 mHandler.post(new Runnable() { 5819 @Override 5820 public void run() { 5821 // Profiling 5822 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5823 profileRendering(mAttachInfo.mHasWindowFocus); 5824 5825 // Hardware rendering 5826 if (mAttachInfo.mHardwareRenderer != null) { 5827 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5828 invalidate(); 5829 } 5830 } 5831 5832 // Layout debugging 5833 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5834 if (layout != mAttachInfo.mDebugLayout) { 5835 mAttachInfo.mDebugLayout = layout; 5836 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5837 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5838 } 5839 } 5840 } 5841 }); 5842 } 5843 5844 private void destroyHardwareRenderer() { 5845 ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5846 5847 if (hardwareRenderer != null) { 5848 if (mView != null) { 5849 hardwareRenderer.destroyHardwareResources(mView); 5850 } 5851 hardwareRenderer.destroy(); 5852 hardwareRenderer.setRequested(false); 5853 5854 mAttachInfo.mHardwareRenderer = null; 5855 mAttachInfo.mHardwareAccelerated = false; 5856 } 5857 } 5858 5859 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5860 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 5861 Configuration newConfig, Rect backDropFrame, boolean forceLayout, 5862 boolean alwaysConsumeNavBar) { 5863 if (DEBUG_LAYOUT) Log.v(mTag, "Resizing " + this + ": frame=" + frame.toShortString() 5864 + " contentInsets=" + contentInsets.toShortString() 5865 + " visibleInsets=" + visibleInsets.toShortString() 5866 + " reportDraw=" + reportDraw 5867 + " backDropFrame=" + backDropFrame); 5868 5869 // Tell all listeners that we are resizing the window so that the chrome can get 5870 // updated as fast as possible on a separate thread, 5871 if (mDragResizing) { 5872 boolean fullscreen = frame.equals(backDropFrame); 5873 synchronized (mWindowCallbacks) { 5874 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 5875 mWindowCallbacks.get(i).onWindowSizeIsChanging(backDropFrame, fullscreen, 5876 visibleInsets, stableInsets); 5877 } 5878 } 5879 } 5880 5881 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5882 if (mTranslator != null) { 5883 mTranslator.translateRectInScreenToAppWindow(frame); 5884 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5885 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5886 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5887 } 5888 SomeArgs args = SomeArgs.obtain(); 5889 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5890 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5891 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5892 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5893 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5894 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5895 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5896 args.arg7 = sameProcessCall ? new Rect(outsets) : outsets; 5897 args.arg8 = sameProcessCall ? new Rect(backDropFrame) : backDropFrame; 5898 args.argi1 = forceLayout ? 1 : 0; 5899 args.argi2 = alwaysConsumeNavBar ? 1 : 0; 5900 msg.obj = args; 5901 mHandler.sendMessage(msg); 5902 } 5903 5904 public void dispatchMoved(int newX, int newY) { 5905 if (DEBUG_LAYOUT) Log.v(mTag, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5906 if (mTranslator != null) { 5907 PointF point = new PointF(newX, newY); 5908 mTranslator.translatePointInScreenToAppWindow(point); 5909 newX = (int) (point.x + 0.5); 5910 newY = (int) (point.y + 0.5); 5911 } 5912 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5913 mHandler.sendMessage(msg); 5914 } 5915 5916 /** 5917 * Represents a pending input event that is waiting in a queue. 5918 * 5919 * Input events are processed in serial order by the timestamp specified by 5920 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5921 * one input event to the application at a time and waits for the application 5922 * to finish handling it before delivering the next one. 5923 * 5924 * However, because the application or IME can synthesize and inject multiple 5925 * key events at a time without going through the input dispatcher, we end up 5926 * needing a queue on the application's side. 5927 */ 5928 private static final class QueuedInputEvent { 5929 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5930 public static final int FLAG_DEFERRED = 1 << 1; 5931 public static final int FLAG_FINISHED = 1 << 2; 5932 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5933 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5934 public static final int FLAG_UNHANDLED = 1 << 5; 5935 5936 public QueuedInputEvent mNext; 5937 5938 public InputEvent mEvent; 5939 public InputEventReceiver mReceiver; 5940 public int mFlags; 5941 5942 public boolean shouldSkipIme() { 5943 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5944 return true; 5945 } 5946 return mEvent instanceof MotionEvent 5947 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5948 } 5949 5950 public boolean shouldSendToSynthesizer() { 5951 if ((mFlags & FLAG_UNHANDLED) != 0) { 5952 return true; 5953 } 5954 5955 return false; 5956 } 5957 5958 @Override 5959 public String toString() { 5960 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5961 boolean hasPrevious = false; 5962 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5963 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5964 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5965 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5966 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5967 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5968 if (!hasPrevious) { 5969 sb.append("0"); 5970 } 5971 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5972 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5973 sb.append(", mEvent=" + mEvent + "}"); 5974 return sb.toString(); 5975 } 5976 5977 private boolean flagToString(String name, int flag, 5978 boolean hasPrevious, StringBuilder sb) { 5979 if ((mFlags & flag) != 0) { 5980 if (hasPrevious) { 5981 sb.append("|"); 5982 } 5983 sb.append(name); 5984 return true; 5985 } 5986 return hasPrevious; 5987 } 5988 } 5989 5990 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5991 InputEventReceiver receiver, int flags) { 5992 QueuedInputEvent q = mQueuedInputEventPool; 5993 if (q != null) { 5994 mQueuedInputEventPoolSize -= 1; 5995 mQueuedInputEventPool = q.mNext; 5996 q.mNext = null; 5997 } else { 5998 q = new QueuedInputEvent(); 5999 } 6000 6001 q.mEvent = event; 6002 q.mReceiver = receiver; 6003 q.mFlags = flags; 6004 return q; 6005 } 6006 6007 private void recycleQueuedInputEvent(QueuedInputEvent q) { 6008 q.mEvent = null; 6009 q.mReceiver = null; 6010 6011 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 6012 mQueuedInputEventPoolSize += 1; 6013 q.mNext = mQueuedInputEventPool; 6014 mQueuedInputEventPool = q; 6015 } 6016 } 6017 6018 void enqueueInputEvent(InputEvent event) { 6019 enqueueInputEvent(event, null, 0, false); 6020 } 6021 6022 void enqueueInputEvent(InputEvent event, 6023 InputEventReceiver receiver, int flags, boolean processImmediately) { 6024 adjustInputEventForCompatibility(event); 6025 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 6026 6027 // Always enqueue the input event in order, regardless of its time stamp. 6028 // We do this because the application or the IME may inject key events 6029 // in response to touch events and we want to ensure that the injected keys 6030 // are processed in the order they were received and we cannot trust that 6031 // the time stamp of injected events are monotonic. 6032 QueuedInputEvent last = mPendingInputEventTail; 6033 if (last == null) { 6034 mPendingInputEventHead = q; 6035 mPendingInputEventTail = q; 6036 } else { 6037 last.mNext = q; 6038 mPendingInputEventTail = q; 6039 } 6040 mPendingInputEventCount += 1; 6041 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6042 mPendingInputEventCount); 6043 6044 if (processImmediately) { 6045 doProcessInputEvents(); 6046 } else { 6047 scheduleProcessInputEvents(); 6048 } 6049 } 6050 6051 private void scheduleProcessInputEvents() { 6052 if (!mProcessInputEventsScheduled) { 6053 mProcessInputEventsScheduled = true; 6054 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 6055 msg.setAsynchronous(true); 6056 mHandler.sendMessage(msg); 6057 } 6058 } 6059 6060 void doProcessInputEvents() { 6061 // Deliver all pending input events in the queue. 6062 while (mPendingInputEventHead != null) { 6063 QueuedInputEvent q = mPendingInputEventHead; 6064 mPendingInputEventHead = q.mNext; 6065 if (mPendingInputEventHead == null) { 6066 mPendingInputEventTail = null; 6067 } 6068 q.mNext = null; 6069 6070 mPendingInputEventCount -= 1; 6071 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6072 mPendingInputEventCount); 6073 6074 long eventTime = q.mEvent.getEventTimeNano(); 6075 long oldestEventTime = eventTime; 6076 if (q.mEvent instanceof MotionEvent) { 6077 MotionEvent me = (MotionEvent)q.mEvent; 6078 if (me.getHistorySize() > 0) { 6079 oldestEventTime = me.getHistoricalEventTimeNano(0); 6080 } 6081 } 6082 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 6083 6084 deliverInputEvent(q); 6085 } 6086 6087 // We are done processing all input events that we can process right now 6088 // so we can clear the pending flag immediately. 6089 if (mProcessInputEventsScheduled) { 6090 mProcessInputEventsScheduled = false; 6091 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 6092 } 6093 } 6094 6095 private void deliverInputEvent(QueuedInputEvent q) { 6096 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6097 q.mEvent.getSequenceNumber()); 6098 if (mInputEventConsistencyVerifier != null) { 6099 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 6100 } 6101 6102 InputStage stage; 6103 if (q.shouldSendToSynthesizer()) { 6104 stage = mSyntheticInputStage; 6105 } else { 6106 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 6107 } 6108 6109 if (stage != null) { 6110 stage.deliver(q); 6111 } else { 6112 finishInputEvent(q); 6113 } 6114 } 6115 6116 private void finishInputEvent(QueuedInputEvent q) { 6117 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6118 q.mEvent.getSequenceNumber()); 6119 6120 if (q.mReceiver != null) { 6121 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 6122 q.mReceiver.finishInputEvent(q.mEvent, handled); 6123 } else { 6124 q.mEvent.recycleIfNeededAfterDispatch(); 6125 } 6126 6127 recycleQueuedInputEvent(q); 6128 } 6129 6130 private void adjustInputEventForCompatibility(InputEvent e) { 6131 if (mTargetSdkVersion < Build.VERSION_CODES.M && e instanceof MotionEvent) { 6132 MotionEvent motion = (MotionEvent) e; 6133 final int mask = 6134 MotionEvent.BUTTON_STYLUS_PRIMARY | MotionEvent.BUTTON_STYLUS_SECONDARY; 6135 final int buttonState = motion.getButtonState(); 6136 final int compatButtonState = (buttonState & mask) >> 4; 6137 if (compatButtonState != 0) { 6138 motion.setButtonState(buttonState | compatButtonState); 6139 } 6140 } 6141 } 6142 6143 static boolean isTerminalInputEvent(InputEvent event) { 6144 if (event instanceof KeyEvent) { 6145 final KeyEvent keyEvent = (KeyEvent)event; 6146 return keyEvent.getAction() == KeyEvent.ACTION_UP; 6147 } else { 6148 final MotionEvent motionEvent = (MotionEvent)event; 6149 final int action = motionEvent.getAction(); 6150 return action == MotionEvent.ACTION_UP 6151 || action == MotionEvent.ACTION_CANCEL 6152 || action == MotionEvent.ACTION_HOVER_EXIT; 6153 } 6154 } 6155 6156 void scheduleConsumeBatchedInput() { 6157 if (!mConsumeBatchedInputScheduled) { 6158 mConsumeBatchedInputScheduled = true; 6159 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 6160 mConsumedBatchedInputRunnable, null); 6161 } 6162 } 6163 6164 void unscheduleConsumeBatchedInput() { 6165 if (mConsumeBatchedInputScheduled) { 6166 mConsumeBatchedInputScheduled = false; 6167 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 6168 mConsumedBatchedInputRunnable, null); 6169 } 6170 } 6171 6172 void scheduleConsumeBatchedInputImmediately() { 6173 if (!mConsumeBatchedInputImmediatelyScheduled) { 6174 unscheduleConsumeBatchedInput(); 6175 mConsumeBatchedInputImmediatelyScheduled = true; 6176 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 6177 } 6178 } 6179 6180 void doConsumeBatchedInput(long frameTimeNanos) { 6181 if (mConsumeBatchedInputScheduled) { 6182 mConsumeBatchedInputScheduled = false; 6183 if (mInputEventReceiver != null) { 6184 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 6185 && frameTimeNanos != -1) { 6186 // If we consumed a batch here, we want to go ahead and schedule the 6187 // consumption of batched input events on the next frame. Otherwise, we would 6188 // wait until we have more input events pending and might get starved by other 6189 // things occurring in the process. If the frame time is -1, however, then 6190 // we're in a non-batching mode, so there's no need to schedule this. 6191 scheduleConsumeBatchedInput(); 6192 } 6193 } 6194 doProcessInputEvents(); 6195 } 6196 } 6197 6198 final class TraversalRunnable implements Runnable { 6199 @Override 6200 public void run() { 6201 doTraversal(); 6202 } 6203 } 6204 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 6205 6206 final class WindowInputEventReceiver extends InputEventReceiver { 6207 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 6208 super(inputChannel, looper); 6209 } 6210 6211 @Override 6212 public void onInputEvent(InputEvent event) { 6213 enqueueInputEvent(event, this, 0, true); 6214 } 6215 6216 @Override 6217 public void onBatchedInputEventPending() { 6218 if (mUnbufferedInputDispatch) { 6219 super.onBatchedInputEventPending(); 6220 } else { 6221 scheduleConsumeBatchedInput(); 6222 } 6223 } 6224 6225 @Override 6226 public void dispose() { 6227 unscheduleConsumeBatchedInput(); 6228 super.dispose(); 6229 } 6230 } 6231 WindowInputEventReceiver mInputEventReceiver; 6232 6233 final class ConsumeBatchedInputRunnable implements Runnable { 6234 @Override 6235 public void run() { 6236 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 6237 } 6238 } 6239 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 6240 new ConsumeBatchedInputRunnable(); 6241 boolean mConsumeBatchedInputScheduled; 6242 6243 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 6244 @Override 6245 public void run() { 6246 doConsumeBatchedInput(-1); 6247 } 6248 } 6249 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 6250 new ConsumeBatchedInputImmediatelyRunnable(); 6251 boolean mConsumeBatchedInputImmediatelyScheduled; 6252 6253 final class InvalidateOnAnimationRunnable implements Runnable { 6254 private boolean mPosted; 6255 private final ArrayList<View> mViews = new ArrayList<View>(); 6256 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 6257 new ArrayList<AttachInfo.InvalidateInfo>(); 6258 private View[] mTempViews; 6259 private AttachInfo.InvalidateInfo[] mTempViewRects; 6260 6261 public void addView(View view) { 6262 synchronized (this) { 6263 mViews.add(view); 6264 postIfNeededLocked(); 6265 } 6266 } 6267 6268 public void addViewRect(AttachInfo.InvalidateInfo info) { 6269 synchronized (this) { 6270 mViewRects.add(info); 6271 postIfNeededLocked(); 6272 } 6273 } 6274 6275 public void removeView(View view) { 6276 synchronized (this) { 6277 mViews.remove(view); 6278 6279 for (int i = mViewRects.size(); i-- > 0; ) { 6280 AttachInfo.InvalidateInfo info = mViewRects.get(i); 6281 if (info.target == view) { 6282 mViewRects.remove(i); 6283 info.recycle(); 6284 } 6285 } 6286 6287 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 6288 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 6289 mPosted = false; 6290 } 6291 } 6292 } 6293 6294 @Override 6295 public void run() { 6296 final int viewCount; 6297 final int viewRectCount; 6298 synchronized (this) { 6299 mPosted = false; 6300 6301 viewCount = mViews.size(); 6302 if (viewCount != 0) { 6303 mTempViews = mViews.toArray(mTempViews != null 6304 ? mTempViews : new View[viewCount]); 6305 mViews.clear(); 6306 } 6307 6308 viewRectCount = mViewRects.size(); 6309 if (viewRectCount != 0) { 6310 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6311 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6312 mViewRects.clear(); 6313 } 6314 } 6315 6316 for (int i = 0; i < viewCount; i++) { 6317 mTempViews[i].invalidate(); 6318 mTempViews[i] = null; 6319 } 6320 6321 for (int i = 0; i < viewRectCount; i++) { 6322 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6323 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6324 info.recycle(); 6325 } 6326 } 6327 6328 private void postIfNeededLocked() { 6329 if (!mPosted) { 6330 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6331 mPosted = true; 6332 } 6333 } 6334 } 6335 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6336 new InvalidateOnAnimationRunnable(); 6337 6338 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6339 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6340 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6341 } 6342 6343 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6344 long delayMilliseconds) { 6345 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6346 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6347 } 6348 6349 public void dispatchInvalidateOnAnimation(View view) { 6350 mInvalidateOnAnimationRunnable.addView(view); 6351 } 6352 6353 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6354 mInvalidateOnAnimationRunnable.addViewRect(info); 6355 } 6356 6357 public void cancelInvalidate(View view) { 6358 mHandler.removeMessages(MSG_INVALIDATE, view); 6359 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6360 // them to the pool 6361 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6362 mInvalidateOnAnimationRunnable.removeView(view); 6363 } 6364 6365 public void dispatchInputEvent(InputEvent event) { 6366 dispatchInputEvent(event, null); 6367 } 6368 6369 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6370 SomeArgs args = SomeArgs.obtain(); 6371 args.arg1 = event; 6372 args.arg2 = receiver; 6373 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6374 msg.setAsynchronous(true); 6375 mHandler.sendMessage(msg); 6376 } 6377 6378 public void synthesizeInputEvent(InputEvent event) { 6379 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6380 msg.setAsynchronous(true); 6381 mHandler.sendMessage(msg); 6382 } 6383 6384 public void dispatchKeyFromIme(KeyEvent event) { 6385 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6386 msg.setAsynchronous(true); 6387 mHandler.sendMessage(msg); 6388 } 6389 6390 /** 6391 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6392 * 6393 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6394 * passes in. 6395 */ 6396 public void dispatchUnhandledInputEvent(InputEvent event) { 6397 if (event instanceof MotionEvent) { 6398 event = MotionEvent.obtain((MotionEvent) event); 6399 } 6400 synthesizeInputEvent(event); 6401 } 6402 6403 public void dispatchAppVisibility(boolean visible) { 6404 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6405 msg.arg1 = visible ? 1 : 0; 6406 mHandler.sendMessage(msg); 6407 } 6408 6409 public void dispatchGetNewSurface() { 6410 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6411 mHandler.sendMessage(msg); 6412 } 6413 6414 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6415 Message msg = Message.obtain(); 6416 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6417 msg.arg1 = hasFocus ? 1 : 0; 6418 msg.arg2 = inTouchMode ? 1 : 0; 6419 mHandler.sendMessage(msg); 6420 } 6421 6422 public void dispatchWindowShown() { 6423 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6424 } 6425 6426 public void dispatchCloseSystemDialogs(String reason) { 6427 Message msg = Message.obtain(); 6428 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6429 msg.obj = reason; 6430 mHandler.sendMessage(msg); 6431 } 6432 6433 public void dispatchDragEvent(DragEvent event) { 6434 final int what; 6435 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6436 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6437 mHandler.removeMessages(what); 6438 } else { 6439 what = MSG_DISPATCH_DRAG_EVENT; 6440 } 6441 Message msg = mHandler.obtainMessage(what, event); 6442 mHandler.sendMessage(msg); 6443 } 6444 6445 public void updatePointerIcon(float x, float y) { 6446 final int what = MSG_UPDATE_POINTER_ICON; 6447 mHandler.removeMessages(what); 6448 final long now = SystemClock.uptimeMillis(); 6449 final MotionEvent event = MotionEvent.obtain( 6450 0, now, MotionEvent.ACTION_HOVER_MOVE, x, y, 0); 6451 Message msg = mHandler.obtainMessage(what, event); 6452 mHandler.sendMessage(msg); 6453 } 6454 6455 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6456 int localValue, int localChanges) { 6457 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6458 args.seq = seq; 6459 args.globalVisibility = globalVisibility; 6460 args.localValue = localValue; 6461 args.localChanges = localChanges; 6462 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6463 } 6464 6465 public void dispatchCheckFocus() { 6466 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6467 // This will result in a call to checkFocus() below. 6468 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6469 } 6470 } 6471 6472 public void dispatchRequestKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 6473 mHandler.obtainMessage( 6474 MSG_REQUEST_KEYBOARD_SHORTCUTS, deviceId, 0, receiver).sendToTarget(); 6475 } 6476 6477 /** 6478 * Post a callback to send a 6479 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6480 * This event is send at most once every 6481 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6482 */ 6483 private void postSendWindowContentChangedCallback(View source, int changeType) { 6484 if (mSendWindowContentChangedAccessibilityEvent == null) { 6485 mSendWindowContentChangedAccessibilityEvent = 6486 new SendWindowContentChangedAccessibilityEvent(); 6487 } 6488 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6489 } 6490 6491 /** 6492 * Remove a posted callback to send a 6493 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6494 */ 6495 private void removeSendWindowContentChangedCallback() { 6496 if (mSendWindowContentChangedAccessibilityEvent != null) { 6497 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6498 } 6499 } 6500 6501 @Override 6502 public boolean showContextMenuForChild(View originalView) { 6503 return false; 6504 } 6505 6506 @Override 6507 public boolean showContextMenuForChild(View originalView, float x, float y) { 6508 return false; 6509 } 6510 6511 @Override 6512 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6513 return null; 6514 } 6515 6516 @Override 6517 public ActionMode startActionModeForChild( 6518 View originalView, ActionMode.Callback callback, int type) { 6519 return null; 6520 } 6521 6522 @Override 6523 public void createContextMenu(ContextMenu menu) { 6524 } 6525 6526 @Override 6527 public void childDrawableStateChanged(View child) { 6528 } 6529 6530 @Override 6531 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6532 if (mView == null || mStopped || mPausedForTransition) { 6533 return false; 6534 } 6535 // Intercept accessibility focus events fired by virtual nodes to keep 6536 // track of accessibility focus position in such nodes. 6537 final int eventType = event.getEventType(); 6538 switch (eventType) { 6539 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6540 final long sourceNodeId = event.getSourceNodeId(); 6541 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6542 sourceNodeId); 6543 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6544 if (source != null) { 6545 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6546 if (provider != null) { 6547 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6548 sourceNodeId); 6549 final AccessibilityNodeInfo node; 6550 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6551 node = provider.createAccessibilityNodeInfo( 6552 AccessibilityNodeProvider.HOST_VIEW_ID); 6553 } else { 6554 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6555 } 6556 setAccessibilityFocus(source, node); 6557 } 6558 } 6559 } break; 6560 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6561 final long sourceNodeId = event.getSourceNodeId(); 6562 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6563 sourceNodeId); 6564 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6565 if (source != null) { 6566 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6567 if (provider != null) { 6568 setAccessibilityFocus(null, null); 6569 } 6570 } 6571 } break; 6572 6573 6574 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6575 handleWindowContentChangedEvent(event); 6576 } break; 6577 } 6578 mAccessibilityManager.sendAccessibilityEvent(event); 6579 return true; 6580 } 6581 6582 /** 6583 * Updates the focused virtual view, when necessary, in response to a 6584 * content changed event. 6585 * <p> 6586 * This is necessary to get updated bounds after a position change. 6587 * 6588 * @param event an accessibility event of type 6589 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} 6590 */ 6591 private void handleWindowContentChangedEvent(AccessibilityEvent event) { 6592 final View focusedHost = mAccessibilityFocusedHost; 6593 if (focusedHost == null || mAccessibilityFocusedVirtualView == null) { 6594 // No virtual view focused, nothing to do here. 6595 return; 6596 } 6597 6598 final AccessibilityNodeProvider provider = focusedHost.getAccessibilityNodeProvider(); 6599 if (provider == null) { 6600 // Error state: virtual view with no provider. Clear focus. 6601 mAccessibilityFocusedHost = null; 6602 mAccessibilityFocusedVirtualView = null; 6603 focusedHost.clearAccessibilityFocusNoCallbacks(); 6604 return; 6605 } 6606 6607 // We only care about change types that may affect the bounds of the 6608 // focused virtual view. 6609 final int changes = event.getContentChangeTypes(); 6610 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) == 0 6611 && changes != AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6612 return; 6613 } 6614 6615 final long eventSourceNodeId = event.getSourceNodeId(); 6616 final int changedViewId = AccessibilityNodeInfo.getAccessibilityViewId(eventSourceNodeId); 6617 6618 // Search up the tree for subtree containment. 6619 boolean hostInSubtree = false; 6620 View root = mAccessibilityFocusedHost; 6621 while (root != null && !hostInSubtree) { 6622 if (changedViewId == root.getAccessibilityViewId()) { 6623 hostInSubtree = true; 6624 } else { 6625 final ViewParent parent = root.getParent(); 6626 if (parent instanceof View) { 6627 root = (View) parent; 6628 } else { 6629 root = null; 6630 } 6631 } 6632 } 6633 6634 // We care only about changes in subtrees containing the host view. 6635 if (!hostInSubtree) { 6636 return; 6637 } 6638 6639 final long focusedSourceNodeId = mAccessibilityFocusedVirtualView.getSourceNodeId(); 6640 int focusedChildId = AccessibilityNodeInfo.getVirtualDescendantId(focusedSourceNodeId); 6641 if (focusedChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6642 // TODO: Should we clear the focused virtual view? 6643 focusedChildId = AccessibilityNodeProvider.HOST_VIEW_ID; 6644 } 6645 6646 // Refresh the node for the focused virtual view. 6647 final Rect oldBounds = mTempRect; 6648 mAccessibilityFocusedVirtualView.getBoundsInScreen(oldBounds); 6649 mAccessibilityFocusedVirtualView = provider.createAccessibilityNodeInfo(focusedChildId); 6650 if (mAccessibilityFocusedVirtualView == null) { 6651 // Error state: The node no longer exists. Clear focus. 6652 mAccessibilityFocusedHost = null; 6653 focusedHost.clearAccessibilityFocusNoCallbacks(); 6654 6655 // This will probably fail, but try to keep the provider's internal 6656 // state consistent by clearing focus. 6657 provider.performAction(focusedChildId, 6658 AccessibilityAction.ACTION_CLEAR_ACCESSIBILITY_FOCUS.getId(), null); 6659 invalidateRectOnScreen(oldBounds); 6660 } else { 6661 // The node was refreshed, invalidate bounds if necessary. 6662 final Rect newBounds = mAccessibilityFocusedVirtualView.getBoundsInScreen(); 6663 if (!oldBounds.equals(newBounds)) { 6664 oldBounds.union(newBounds); 6665 invalidateRectOnScreen(oldBounds); 6666 } 6667 } 6668 } 6669 6670 @Override 6671 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6672 postSendWindowContentChangedCallback(source, changeType); 6673 } 6674 6675 @Override 6676 public boolean canResolveLayoutDirection() { 6677 return true; 6678 } 6679 6680 @Override 6681 public boolean isLayoutDirectionResolved() { 6682 return true; 6683 } 6684 6685 @Override 6686 public int getLayoutDirection() { 6687 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6688 } 6689 6690 @Override 6691 public boolean canResolveTextDirection() { 6692 return true; 6693 } 6694 6695 @Override 6696 public boolean isTextDirectionResolved() { 6697 return true; 6698 } 6699 6700 @Override 6701 public int getTextDirection() { 6702 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6703 } 6704 6705 @Override 6706 public boolean canResolveTextAlignment() { 6707 return true; 6708 } 6709 6710 @Override 6711 public boolean isTextAlignmentResolved() { 6712 return true; 6713 } 6714 6715 @Override 6716 public int getTextAlignment() { 6717 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6718 } 6719 6720 private View getCommonPredecessor(View first, View second) { 6721 if (mTempHashSet == null) { 6722 mTempHashSet = new HashSet<View>(); 6723 } 6724 HashSet<View> seen = mTempHashSet; 6725 seen.clear(); 6726 View firstCurrent = first; 6727 while (firstCurrent != null) { 6728 seen.add(firstCurrent); 6729 ViewParent firstCurrentParent = firstCurrent.mParent; 6730 if (firstCurrentParent instanceof View) { 6731 firstCurrent = (View) firstCurrentParent; 6732 } else { 6733 firstCurrent = null; 6734 } 6735 } 6736 View secondCurrent = second; 6737 while (secondCurrent != null) { 6738 if (seen.contains(secondCurrent)) { 6739 seen.clear(); 6740 return secondCurrent; 6741 } 6742 ViewParent secondCurrentParent = secondCurrent.mParent; 6743 if (secondCurrentParent instanceof View) { 6744 secondCurrent = (View) secondCurrentParent; 6745 } else { 6746 secondCurrent = null; 6747 } 6748 } 6749 seen.clear(); 6750 return null; 6751 } 6752 6753 void checkThread() { 6754 if (mThread != Thread.currentThread()) { 6755 throw new CalledFromWrongThreadException( 6756 "Only the original thread that created a view hierarchy can touch its views."); 6757 } 6758 } 6759 6760 @Override 6761 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6762 // ViewAncestor never intercepts touch event, so this can be a no-op 6763 } 6764 6765 @Override 6766 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6767 if (rectangle == null) { 6768 return scrollToRectOrFocus(null, immediate); 6769 } 6770 rectangle.offset(child.getLeft() - child.getScrollX(), 6771 child.getTop() - child.getScrollY()); 6772 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6773 mTempRect.set(rectangle); 6774 mTempRect.offset(0, -mCurScrollY); 6775 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6776 try { 6777 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6778 } catch (RemoteException re) { 6779 /* ignore */ 6780 } 6781 return scrolled; 6782 } 6783 6784 @Override 6785 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6786 // Do nothing. 6787 } 6788 6789 @Override 6790 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6791 return false; 6792 } 6793 6794 @Override 6795 public void onStopNestedScroll(View target) { 6796 } 6797 6798 @Override 6799 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6800 } 6801 6802 @Override 6803 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6804 int dxUnconsumed, int dyUnconsumed) { 6805 } 6806 6807 @Override 6808 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6809 } 6810 6811 @Override 6812 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6813 return false; 6814 } 6815 6816 @Override 6817 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6818 return false; 6819 } 6820 6821 @Override 6822 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6823 return false; 6824 } 6825 6826 /** 6827 * Force the window to report its next draw. 6828 * <p> 6829 * This method is only supposed to be used to speed up the interaction from SystemUI and window 6830 * manager when waiting for the first frame to be drawn when turning on the screen. DO NOT USE 6831 * unless you fully understand this interaction. 6832 * @hide 6833 */ 6834 public void setReportNextDraw() { 6835 mReportNextDraw = true; 6836 invalidate(); 6837 } 6838 6839 void changeCanvasOpacity(boolean opaque) { 6840 Log.d(mTag, "changeCanvasOpacity: opaque=" + opaque); 6841 if (mAttachInfo.mHardwareRenderer != null) { 6842 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6843 } 6844 } 6845 6846 class TakenSurfaceHolder extends BaseSurfaceHolder { 6847 @Override 6848 public boolean onAllowLockCanvas() { 6849 return mDrawingAllowed; 6850 } 6851 6852 @Override 6853 public void onRelayoutContainer() { 6854 // Not currently interesting -- from changing between fixed and layout size. 6855 } 6856 6857 @Override 6858 public void setFormat(int format) { 6859 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6860 } 6861 6862 @Override 6863 public void setType(int type) { 6864 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6865 } 6866 6867 @Override 6868 public void onUpdateSurface() { 6869 // We take care of format and type changes on our own. 6870 throw new IllegalStateException("Shouldn't be here"); 6871 } 6872 6873 @Override 6874 public boolean isCreating() { 6875 return mIsCreating; 6876 } 6877 6878 @Override 6879 public void setFixedSize(int width, int height) { 6880 throw new UnsupportedOperationException( 6881 "Currently only support sizing from layout"); 6882 } 6883 6884 @Override 6885 public void setKeepScreenOn(boolean screenOn) { 6886 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6887 } 6888 } 6889 6890 static class W extends IWindow.Stub { 6891 private final WeakReference<ViewRootImpl> mViewAncestor; 6892 private final IWindowSession mWindowSession; 6893 6894 W(ViewRootImpl viewAncestor) { 6895 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6896 mWindowSession = viewAncestor.mWindowSession; 6897 } 6898 6899 @Override 6900 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6901 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 6902 Configuration newConfig, Rect backDropFrame, boolean forceLayout, 6903 boolean alwaysConsumeNavBar) { 6904 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6905 if (viewAncestor != null) { 6906 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6907 visibleInsets, stableInsets, outsets, reportDraw, newConfig, backDropFrame, 6908 forceLayout, alwaysConsumeNavBar); 6909 } 6910 } 6911 6912 @Override 6913 public void moved(int newX, int newY) { 6914 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6915 if (viewAncestor != null) { 6916 viewAncestor.dispatchMoved(newX, newY); 6917 } 6918 } 6919 6920 @Override 6921 public void dispatchAppVisibility(boolean visible) { 6922 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6923 if (viewAncestor != null) { 6924 viewAncestor.dispatchAppVisibility(visible); 6925 } 6926 } 6927 6928 @Override 6929 public void dispatchGetNewSurface() { 6930 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6931 if (viewAncestor != null) { 6932 viewAncestor.dispatchGetNewSurface(); 6933 } 6934 } 6935 6936 @Override 6937 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6938 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6939 if (viewAncestor != null) { 6940 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6941 } 6942 } 6943 6944 private static int checkCallingPermission(String permission) { 6945 try { 6946 return ActivityManagerNative.getDefault().checkPermission( 6947 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6948 } catch (RemoteException e) { 6949 return PackageManager.PERMISSION_DENIED; 6950 } 6951 } 6952 6953 @Override 6954 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6955 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6956 if (viewAncestor != null) { 6957 final View view = viewAncestor.mView; 6958 if (view != null) { 6959 if (checkCallingPermission(Manifest.permission.DUMP) != 6960 PackageManager.PERMISSION_GRANTED) { 6961 throw new SecurityException("Insufficient permissions to invoke" 6962 + " executeCommand() from pid=" + Binder.getCallingPid() 6963 + ", uid=" + Binder.getCallingUid()); 6964 } 6965 6966 OutputStream clientStream = null; 6967 try { 6968 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6969 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6970 } catch (IOException e) { 6971 e.printStackTrace(); 6972 } finally { 6973 if (clientStream != null) { 6974 try { 6975 clientStream.close(); 6976 } catch (IOException e) { 6977 e.printStackTrace(); 6978 } 6979 } 6980 } 6981 } 6982 } 6983 } 6984 6985 @Override 6986 public void closeSystemDialogs(String reason) { 6987 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6988 if (viewAncestor != null) { 6989 viewAncestor.dispatchCloseSystemDialogs(reason); 6990 } 6991 } 6992 6993 @Override 6994 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6995 boolean sync) { 6996 if (sync) { 6997 try { 6998 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6999 } catch (RemoteException e) { 7000 } 7001 } 7002 } 7003 7004 @Override 7005 public void dispatchWallpaperCommand(String action, int x, int y, 7006 int z, Bundle extras, boolean sync) { 7007 if (sync) { 7008 try { 7009 mWindowSession.wallpaperCommandComplete(asBinder(), null); 7010 } catch (RemoteException e) { 7011 } 7012 } 7013 } 7014 7015 /* Drag/drop */ 7016 @Override 7017 public void dispatchDragEvent(DragEvent event) { 7018 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7019 if (viewAncestor != null) { 7020 viewAncestor.dispatchDragEvent(event); 7021 } 7022 } 7023 7024 @Override 7025 public void updatePointerIcon(float x, float y) { 7026 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7027 if (viewAncestor != null) { 7028 viewAncestor.updatePointerIcon(x, y); 7029 } 7030 } 7031 7032 @Override 7033 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 7034 int localValue, int localChanges) { 7035 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7036 if (viewAncestor != null) { 7037 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 7038 localValue, localChanges); 7039 } 7040 } 7041 7042 @Override 7043 public void dispatchWindowShown() { 7044 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7045 if (viewAncestor != null) { 7046 viewAncestor.dispatchWindowShown(); 7047 } 7048 } 7049 7050 @Override 7051 public void requestAppKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 7052 ViewRootImpl viewAncestor = mViewAncestor.get(); 7053 if (viewAncestor != null) { 7054 viewAncestor.dispatchRequestKeyboardShortcuts(receiver, deviceId); 7055 } 7056 } 7057 } 7058 7059 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 7060 public CalledFromWrongThreadException(String msg) { 7061 super(msg); 7062 } 7063 } 7064 7065 static HandlerActionQueue getRunQueue() { 7066 HandlerActionQueue rq = sRunQueues.get(); 7067 if (rq != null) { 7068 return rq; 7069 } 7070 rq = new HandlerActionQueue(); 7071 sRunQueues.set(rq); 7072 return rq; 7073 } 7074 7075 /** 7076 * Start a drag resizing which will inform all listeners that a window resize is taking place. 7077 */ 7078 private void startDragResizing(Rect initialBounds, boolean fullscreen, Rect systemInsets, 7079 Rect stableInsets) { 7080 if (!mDragResizing) { 7081 mDragResizing = true; 7082 synchronized (mWindowCallbacks) { 7083 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7084 mWindowCallbacks.get(i).onWindowDragResizeStart(initialBounds, fullscreen, 7085 systemInsets, stableInsets); 7086 } 7087 } 7088 mFullRedrawNeeded = true; 7089 } 7090 } 7091 7092 /** 7093 * End a drag resize which will inform all listeners that a window resize has ended. 7094 */ 7095 private void endDragResizing() { 7096 if (mDragResizing) { 7097 mDragResizing = false; 7098 synchronized (mWindowCallbacks) { 7099 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7100 mWindowCallbacks.get(i).onWindowDragResizeEnd(); 7101 } 7102 } 7103 mFullRedrawNeeded = true; 7104 } 7105 } 7106 7107 private boolean updateContentDrawBounds() { 7108 boolean updated = false; 7109 synchronized (mWindowCallbacks) { 7110 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7111 updated |= mWindowCallbacks.get(i).onContentDrawn( 7112 mWindowAttributes.surfaceInsets.left, 7113 mWindowAttributes.surfaceInsets.top, 7114 mWidth, mHeight); 7115 } 7116 } 7117 return updated | (mDragResizing && mReportNextDraw); 7118 } 7119 7120 private void requestDrawWindow() { 7121 if (mReportNextDraw) { 7122 mWindowDrawCountDown = new CountDownLatch(mWindowCallbacks.size()); 7123 } 7124 synchronized (mWindowCallbacks) { 7125 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7126 mWindowCallbacks.get(i).onRequestDraw(mReportNextDraw); 7127 } 7128 } 7129 } 7130 7131 /** 7132 * Tells this instance that its corresponding activity has just relaunched. In this case, we 7133 * need to force a relayout of the window to make sure we get the correct bounds from window 7134 * manager. 7135 */ 7136 public void reportActivityRelaunched() { 7137 mActivityRelaunched = true; 7138 } 7139 7140 /** 7141 * Class for managing the accessibility interaction connection 7142 * based on the global accessibility state. 7143 */ 7144 final class AccessibilityInteractionConnectionManager 7145 implements AccessibilityStateChangeListener { 7146 @Override 7147 public void onAccessibilityStateChanged(boolean enabled) { 7148 if (enabled) { 7149 ensureConnection(); 7150 if (mAttachInfo.mHasWindowFocus) { 7151 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 7152 View focusedView = mView.findFocus(); 7153 if (focusedView != null && focusedView != mView) { 7154 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 7155 } 7156 } 7157 } else { 7158 ensureNoConnection(); 7159 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 7160 } 7161 } 7162 7163 public void ensureConnection() { 7164 final boolean registered = 7165 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7166 if (!registered) { 7167 mAttachInfo.mAccessibilityWindowId = 7168 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 7169 new AccessibilityInteractionConnection(ViewRootImpl.this)); 7170 } 7171 } 7172 7173 public void ensureNoConnection() { 7174 final boolean registered = 7175 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7176 if (registered) { 7177 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7178 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 7179 } 7180 } 7181 } 7182 7183 final class HighContrastTextManager implements HighTextContrastChangeListener { 7184 HighContrastTextManager() { 7185 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 7186 } 7187 @Override 7188 public void onHighTextContrastStateChanged(boolean enabled) { 7189 mAttachInfo.mHighContrastText = enabled; 7190 7191 // Destroy Displaylists so they can be recreated with high contrast recordings 7192 destroyHardwareResources(); 7193 7194 // Schedule redraw, which will rerecord + redraw all text 7195 invalidate(); 7196 } 7197 } 7198 7199 /** 7200 * This class is an interface this ViewAncestor provides to the 7201 * AccessibilityManagerService to the latter can interact with 7202 * the view hierarchy in this ViewAncestor. 7203 */ 7204 static final class AccessibilityInteractionConnection 7205 extends IAccessibilityInteractionConnection.Stub { 7206 private final WeakReference<ViewRootImpl> mViewRootImpl; 7207 7208 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 7209 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 7210 } 7211 7212 @Override 7213 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 7214 Region interactiveRegion, int interactionId, 7215 IAccessibilityInteractionConnectionCallback callback, int flags, 7216 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7217 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7218 if (viewRootImpl != null && viewRootImpl.mView != null) { 7219 viewRootImpl.getAccessibilityInteractionController() 7220 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 7221 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7222 interrogatingTid, spec); 7223 } else { 7224 // We cannot make the call and notify the caller so it does not wait. 7225 try { 7226 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7227 } catch (RemoteException re) { 7228 /* best effort - ignore */ 7229 } 7230 } 7231 } 7232 7233 @Override 7234 public void performAccessibilityAction(long accessibilityNodeId, int action, 7235 Bundle arguments, int interactionId, 7236 IAccessibilityInteractionConnectionCallback callback, int flags, 7237 int interrogatingPid, long interrogatingTid) { 7238 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7239 if (viewRootImpl != null && viewRootImpl.mView != null) { 7240 viewRootImpl.getAccessibilityInteractionController() 7241 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 7242 interactionId, callback, flags, interrogatingPid, interrogatingTid); 7243 } else { 7244 // We cannot make the call and notify the caller so it does not wait. 7245 try { 7246 callback.setPerformAccessibilityActionResult(false, interactionId); 7247 } catch (RemoteException re) { 7248 /* best effort - ignore */ 7249 } 7250 } 7251 } 7252 7253 @Override 7254 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 7255 String viewId, Region interactiveRegion, int interactionId, 7256 IAccessibilityInteractionConnectionCallback callback, int flags, 7257 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7258 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7259 if (viewRootImpl != null && viewRootImpl.mView != null) { 7260 viewRootImpl.getAccessibilityInteractionController() 7261 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 7262 viewId, interactiveRegion, interactionId, callback, flags, 7263 interrogatingPid, interrogatingTid, spec); 7264 } else { 7265 // We cannot make the call and notify the caller so it does not wait. 7266 try { 7267 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7268 } catch (RemoteException re) { 7269 /* best effort - ignore */ 7270 } 7271 } 7272 } 7273 7274 @Override 7275 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 7276 Region interactiveRegion, int interactionId, 7277 IAccessibilityInteractionConnectionCallback callback, int flags, 7278 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7279 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7280 if (viewRootImpl != null && viewRootImpl.mView != null) { 7281 viewRootImpl.getAccessibilityInteractionController() 7282 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 7283 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7284 interrogatingTid, spec); 7285 } else { 7286 // We cannot make the call and notify the caller so it does not wait. 7287 try { 7288 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7289 } catch (RemoteException re) { 7290 /* best effort - ignore */ 7291 } 7292 } 7293 } 7294 7295 @Override 7296 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 7297 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7298 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7299 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7300 if (viewRootImpl != null && viewRootImpl.mView != null) { 7301 viewRootImpl.getAccessibilityInteractionController() 7302 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 7303 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7304 spec); 7305 } else { 7306 // We cannot make the call and notify the caller so it does not wait. 7307 try { 7308 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7309 } catch (RemoteException re) { 7310 /* best effort - ignore */ 7311 } 7312 } 7313 } 7314 7315 @Override 7316 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 7317 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7318 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7319 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7320 if (viewRootImpl != null && viewRootImpl.mView != null) { 7321 viewRootImpl.getAccessibilityInteractionController() 7322 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 7323 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7324 spec); 7325 } else { 7326 // We cannot make the call and notify the caller so it does not wait. 7327 try { 7328 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7329 } catch (RemoteException re) { 7330 /* best effort - ignore */ 7331 } 7332 } 7333 } 7334 } 7335 7336 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 7337 private int mChangeTypes = 0; 7338 7339 public View mSource; 7340 public long mLastEventTimeMillis; 7341 7342 @Override 7343 public void run() { 7344 // The accessibility may be turned off while we were waiting so check again. 7345 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 7346 mLastEventTimeMillis = SystemClock.uptimeMillis(); 7347 AccessibilityEvent event = AccessibilityEvent.obtain(); 7348 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 7349 event.setContentChangeTypes(mChangeTypes); 7350 mSource.sendAccessibilityEventUnchecked(event); 7351 } else { 7352 mLastEventTimeMillis = 0; 7353 } 7354 // In any case reset to initial state. 7355 mSource.resetSubtreeAccessibilityStateChanged(); 7356 mSource = null; 7357 mChangeTypes = 0; 7358 } 7359 7360 public void runOrPost(View source, int changeType) { 7361 if (mSource != null) { 7362 // If there is no common predecessor, then mSource points to 7363 // a removed view, hence in this case always prefer the source. 7364 View predecessor = getCommonPredecessor(mSource, source); 7365 mSource = (predecessor != null) ? predecessor : source; 7366 mChangeTypes |= changeType; 7367 return; 7368 } 7369 mSource = source; 7370 mChangeTypes = changeType; 7371 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 7372 final long minEventIntevalMillis = 7373 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 7374 if (timeSinceLastMillis >= minEventIntevalMillis) { 7375 mSource.removeCallbacks(this); 7376 run(); 7377 } else { 7378 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 7379 } 7380 } 7381 } 7382} 7383