ViewRootImpl.java revision 90776de6bbcd7dd40cb2690d4441fbafe29747d9
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 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 317 = new ViewTreeObserver.InternalInsetsInfo(); 318 319 final Rect mDispatchContentInsets = new Rect(); 320 final Rect mDispatchStableInsets = new Rect(); 321 322 private WindowInsets mLastWindowInsets; 323 324 final Configuration mLastConfiguration = new Configuration(); 325 final Configuration mPendingConfiguration = new Configuration(); 326 327 boolean mScrollMayChange; 328 int mSoftInputMode; 329 WeakReference<View> mLastScrolledFocus; 330 int mScrollY; 331 int mCurScrollY; 332 Scroller mScroller; 333 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 334 private ArrayList<LayoutTransition> mPendingTransitions; 335 336 final ViewConfiguration mViewConfiguration; 337 338 /* Drag/drop */ 339 ClipDescription mDragDescription; 340 View mCurrentDragView; 341 volatile Object mLocalDragState; 342 final PointF mDragPoint = new PointF(); 343 final PointF mLastTouchPoint = new PointF(); 344 int mLastTouchSource; 345 346 private boolean mProfileRendering; 347 private Choreographer.FrameCallback mRenderProfiler; 348 private boolean mRenderProfilingEnabled; 349 350 // Variables to track frames per second, enabled via DEBUG_FPS flag 351 private long mFpsStartTime = -1; 352 private long mFpsPrevTime = -1; 353 private int mFpsNumFrames; 354 355 private int mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 356 private PointerIcon mCustomPointerIcon = null; 357 358 /** 359 * see {@link #playSoundEffect(int)} 360 */ 361 AudioManager mAudioManager; 362 363 final AccessibilityManager mAccessibilityManager; 364 365 AccessibilityInteractionController mAccessibilityInteractionController; 366 367 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 368 HighContrastTextManager mHighContrastTextManager; 369 370 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 371 372 HashSet<View> mTempHashSet; 373 374 private final int mDensity; 375 private final int mNoncompatDensity; 376 377 private boolean mInLayout = false; 378 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 379 boolean mHandlingLayoutInLayoutRequest = false; 380 381 private int mViewLayoutDirectionInitial; 382 383 /** Set to true once doDie() has been called. */ 384 private boolean mRemoved; 385 386 /** 387 * Consistency verifier for debugging purposes. 388 */ 389 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 390 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 391 new InputEventConsistencyVerifier(this, 0) : null; 392 393 static final class SystemUiVisibilityInfo { 394 int seq; 395 int globalVisibility; 396 int localValue; 397 int localChanges; 398 } 399 400 private String mTag = TAG; 401 402 public ViewRootImpl(Context context, Display display) { 403 mContext = context; 404 mWindowSession = WindowManagerGlobal.getWindowSession(); 405 mDisplay = display; 406 mBasePackageName = context.getBasePackageName(); 407 408 mDisplayAdjustments = display.getDisplayAdjustments(); 409 410 mThread = Thread.currentThread(); 411 mLocation = new WindowLeaked(null); 412 mLocation.fillInStackTrace(); 413 mWidth = -1; 414 mHeight = -1; 415 mDirty = new Rect(); 416 mTempRect = new Rect(); 417 mVisRect = new Rect(); 418 mWinFrame = new Rect(); 419 mWindow = new W(this); 420 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 421 mViewVisibility = View.GONE; 422 mTransparentRegion = new Region(); 423 mPreviousTransparentRegion = new Region(); 424 mFirst = true; // true for the first time the view is added 425 mAdded = false; 426 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 427 mAccessibilityManager = AccessibilityManager.getInstance(context); 428 mAccessibilityInteractionConnectionManager = 429 new AccessibilityInteractionConnectionManager(); 430 mAccessibilityManager.addAccessibilityStateChangeListener( 431 mAccessibilityInteractionConnectionManager); 432 mHighContrastTextManager = new HighContrastTextManager(); 433 mAccessibilityManager.addHighTextContrastStateChangeListener( 434 mHighContrastTextManager); 435 mViewConfiguration = ViewConfiguration.get(context); 436 mDensity = context.getResources().getDisplayMetrics().densityDpi; 437 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 438 mFallbackEventHandler = new PhoneFallbackEventHandler(context); 439 mChoreographer = Choreographer.getInstance(); 440 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 441 loadSystemProperties(); 442 } 443 444 public static void addFirstDrawHandler(Runnable callback) { 445 synchronized (sFirstDrawHandlers) { 446 if (!sFirstDrawComplete) { 447 sFirstDrawHandlers.add(callback); 448 } 449 } 450 } 451 452 public static void addConfigCallback(ComponentCallbacks callback) { 453 synchronized (sConfigCallbacks) { 454 sConfigCallbacks.add(callback); 455 } 456 } 457 458 public void addWindowCallbacks(WindowCallbacks callback) { 459 if (USE_MT_RENDERER) { 460 synchronized (mWindowCallbacks) { 461 mWindowCallbacks.add(callback); 462 } 463 } 464 } 465 466 public void removeWindowCallbacks(WindowCallbacks callback) { 467 if (USE_MT_RENDERER) { 468 synchronized (mWindowCallbacks) { 469 mWindowCallbacks.remove(callback); 470 } 471 } 472 } 473 474 public void reportDrawFinish() { 475 if (mWindowDrawCountDown != null) { 476 mWindowDrawCountDown.countDown(); 477 } 478 } 479 480 // FIXME for perf testing only 481 private boolean mProfile = false; 482 483 /** 484 * Call this to profile the next traversal call. 485 * FIXME for perf testing only. Remove eventually 486 */ 487 public void profile() { 488 mProfile = true; 489 } 490 491 /** 492 * Indicates whether we are in touch mode. Calling this method triggers an IPC 493 * call and should be avoided whenever possible. 494 * 495 * @return True, if the device is in touch mode, false otherwise. 496 * 497 * @hide 498 */ 499 static boolean isInTouchMode() { 500 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 501 if (windowSession != null) { 502 try { 503 return windowSession.getInTouchMode(); 504 } catch (RemoteException e) { 505 } 506 } 507 return false; 508 } 509 510 /** 511 * We have one child 512 */ 513 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 514 synchronized (this) { 515 if (mView == null) { 516 mView = view; 517 518 mAttachInfo.mDisplayState = mDisplay.getState(); 519 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 520 521 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 522 mFallbackEventHandler.setView(view); 523 mWindowAttributes.copyFrom(attrs); 524 if (mWindowAttributes.packageName == null) { 525 mWindowAttributes.packageName = mBasePackageName; 526 } 527 attrs = mWindowAttributes; 528 setTag(); 529 // Keep track of the actual window flags supplied by the client. 530 mClientWindowLayoutFlags = attrs.flags; 531 532 setAccessibilityFocus(null, null); 533 534 if (view instanceof RootViewSurfaceTaker) { 535 mSurfaceHolderCallback = 536 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 537 if (mSurfaceHolderCallback != null) { 538 mSurfaceHolder = new TakenSurfaceHolder(); 539 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 540 } 541 } 542 543 // Compute surface insets required to draw at specified Z value. 544 // TODO: Use real shadow insets for a constant max Z. 545 if (!attrs.hasManualSurfaceInsets) { 546 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 547 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 548 } 549 550 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 551 mTranslator = compatibilityInfo.getTranslator(); 552 553 // If the application owns the surface, don't enable hardware acceleration 554 if (mSurfaceHolder == null) { 555 enableHardwareAcceleration(attrs); 556 } 557 558 boolean restore = false; 559 if (mTranslator != null) { 560 mSurface.setCompatibilityTranslator(mTranslator); 561 restore = true; 562 attrs.backup(); 563 mTranslator.translateWindowLayout(attrs); 564 } 565 if (DEBUG_LAYOUT) Log.d(mTag, "WindowLayout in setView:" + attrs); 566 567 if (!compatibilityInfo.supportsScreen()) { 568 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 569 mLastInCompatMode = true; 570 } 571 572 mSoftInputMode = attrs.softInputMode; 573 mWindowAttributesChanged = true; 574 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 575 mAttachInfo.mRootView = view; 576 mAttachInfo.mScalingRequired = mTranslator != null; 577 mAttachInfo.mApplicationScale = 578 mTranslator == null ? 1.0f : mTranslator.applicationScale; 579 if (panelParentView != null) { 580 mAttachInfo.mPanelParentWindowToken 581 = panelParentView.getApplicationWindowToken(); 582 } 583 mAdded = true; 584 int res; /* = WindowManagerImpl.ADD_OKAY; */ 585 586 // Schedule the first layout -before- adding to the window 587 // manager, to make sure we do the relayout before receiving 588 // any other events from the system. 589 requestLayout(); 590 if ((mWindowAttributes.inputFeatures 591 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 592 mInputChannel = new InputChannel(); 593 } 594 mForceDecorViewVisibility = (mWindowAttributes.privateFlags 595 & PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY) != 0; 596 try { 597 mOrigWindowType = mWindowAttributes.type; 598 mAttachInfo.mRecomputeGlobalAttributes = true; 599 collectViewAttributes(); 600 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 601 getHostVisibility(), mDisplay.getDisplayId(), 602 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, 603 mAttachInfo.mOutsets, mInputChannel); 604 } catch (RemoteException e) { 605 mAdded = false; 606 mView = null; 607 mAttachInfo.mRootView = null; 608 mInputChannel = null; 609 mFallbackEventHandler.setView(null); 610 unscheduleTraversals(); 611 setAccessibilityFocus(null, null); 612 throw new RuntimeException("Adding window failed", e); 613 } finally { 614 if (restore) { 615 attrs.restore(); 616 } 617 } 618 619 if (mTranslator != null) { 620 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 621 } 622 mPendingOverscanInsets.set(0, 0, 0, 0); 623 mPendingContentInsets.set(mAttachInfo.mContentInsets); 624 mPendingStableInsets.set(mAttachInfo.mStableInsets); 625 mPendingVisibleInsets.set(0, 0, 0, 0); 626 if (DEBUG_LAYOUT) Log.v(mTag, "Added window " + mWindow); 627 if (res < WindowManagerGlobal.ADD_OKAY) { 628 mAttachInfo.mRootView = null; 629 mAdded = false; 630 mFallbackEventHandler.setView(null); 631 unscheduleTraversals(); 632 setAccessibilityFocus(null, null); 633 switch (res) { 634 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 635 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 636 throw new WindowManager.BadTokenException( 637 "Unable to add window -- token " + attrs.token 638 + " is not valid; is your activity running?"); 639 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 640 throw new WindowManager.BadTokenException( 641 "Unable to add window -- token " + attrs.token 642 + " is not for an application"); 643 case WindowManagerGlobal.ADD_APP_EXITING: 644 throw new WindowManager.BadTokenException( 645 "Unable to add window -- app for token " + attrs.token 646 + " is exiting"); 647 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 648 throw new WindowManager.BadTokenException( 649 "Unable to add window -- window " + mWindow 650 + " has already been added"); 651 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 652 // Silently ignore -- we would have just removed it 653 // right away, anyway. 654 return; 655 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 656 throw new WindowManager.BadTokenException("Unable to add window " 657 + mWindow + " -- another window of type " 658 + mWindowAttributes.type + " already exists"); 659 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 660 throw new WindowManager.BadTokenException("Unable to add window " 661 + mWindow + " -- permission denied for window type " 662 + mWindowAttributes.type); 663 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 664 throw new WindowManager.InvalidDisplayException("Unable to add window " 665 + mWindow + " -- the specified display can not be found"); 666 case WindowManagerGlobal.ADD_INVALID_TYPE: 667 throw new WindowManager.InvalidDisplayException("Unable to add window " 668 + mWindow + " -- the specified window type " 669 + mWindowAttributes.type + " is not valid"); 670 } 671 throw new RuntimeException( 672 "Unable to add window -- unknown error code " + res); 673 } 674 675 if (view instanceof RootViewSurfaceTaker) { 676 mInputQueueCallback = 677 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 678 } 679 if (mInputChannel != null) { 680 if (mInputQueueCallback != null) { 681 mInputQueue = new InputQueue(); 682 mInputQueueCallback.onInputQueueCreated(mInputQueue); 683 } 684 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 685 Looper.myLooper()); 686 } 687 688 view.assignParent(this); 689 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 690 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 691 692 if (mAccessibilityManager.isEnabled()) { 693 mAccessibilityInteractionConnectionManager.ensureConnection(); 694 } 695 696 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 697 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 698 } 699 700 // Set up the input pipeline. 701 CharSequence counterSuffix = attrs.getTitle(); 702 mSyntheticInputStage = new SyntheticInputStage(); 703 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 704 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 705 "aq:native-post-ime:" + counterSuffix); 706 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 707 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 708 "aq:ime:" + counterSuffix); 709 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 710 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 711 "aq:native-pre-ime:" + counterSuffix); 712 713 mFirstInputStage = nativePreImeStage; 714 mFirstPostImeInputStage = earlyPostImeStage; 715 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 716 } 717 } 718 } 719 720 private void setTag() { 721 final String[] split = mWindowAttributes.getTitle().toString().split("\\."); 722 if (split.length > 0) { 723 mTag = TAG + "[" + split[split.length - 1] + "]"; 724 } 725 } 726 727 /** Whether the window is in local focus mode or not */ 728 private boolean isInLocalFocusMode() { 729 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 730 } 731 732 public int getWindowFlags() { 733 return mWindowAttributes.flags; 734 } 735 736 public int getDisplayId() { 737 return mDisplay.getDisplayId(); 738 } 739 740 public CharSequence getTitle() { 741 return mWindowAttributes.getTitle(); 742 } 743 744 void destroyHardwareResources() { 745 if (mAttachInfo.mHardwareRenderer != null) { 746 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 747 mAttachInfo.mHardwareRenderer.destroy(); 748 } 749 } 750 751 public void detachFunctor(long functor) { 752 if (mAttachInfo.mHardwareRenderer != null) { 753 // Fence so that any pending invokeFunctor() messages will be processed 754 // before we return from detachFunctor. 755 mAttachInfo.mHardwareRenderer.stopDrawing(); 756 } 757 } 758 759 /** 760 * Schedules the functor for execution in either kModeProcess or 761 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 762 * 763 * @param functor The native functor to invoke 764 * @param waitForCompletion If true, this will not return until the functor 765 * has invoked. If false, the functor may be invoked 766 * asynchronously. 767 */ 768 public void invokeFunctor(long functor, boolean waitForCompletion) { 769 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 770 } 771 772 public void registerAnimatingRenderNode(RenderNode animator) { 773 if (mAttachInfo.mHardwareRenderer != null) { 774 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 775 } else { 776 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 777 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 778 } 779 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 780 } 781 } 782 783 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 784 mAttachInfo.mHardwareAccelerated = false; 785 mAttachInfo.mHardwareAccelerationRequested = false; 786 787 // Don't enable hardware acceleration when the application is in compatibility mode 788 if (mTranslator != null) return; 789 790 // Try to enable hardware acceleration if requested 791 final boolean hardwareAccelerated = 792 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 793 794 if (hardwareAccelerated) { 795 if (!ThreadedRenderer.isAvailable()) { 796 return; 797 } 798 799 // Persistent processes (including the system) should not do 800 // accelerated rendering on low-end devices. In that case, 801 // sRendererDisabled will be set. In addition, the system process 802 // itself should never do accelerated rendering. In that case, both 803 // sRendererDisabled and sSystemRendererDisabled are set. When 804 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 805 // can be used by code on the system process to escape that and enable 806 // HW accelerated drawing. (This is basically for the lock screen.) 807 808 final boolean fakeHwAccelerated = (attrs.privateFlags & 809 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 810 final boolean forceHwAccelerated = (attrs.privateFlags & 811 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 812 813 if (fakeHwAccelerated) { 814 // This is exclusively for the preview windows the window manager 815 // shows for launching applications, so they will look more like 816 // the app being launched. 817 mAttachInfo.mHardwareAccelerationRequested = true; 818 } else if (!ThreadedRenderer.sRendererDisabled 819 || (ThreadedRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 820 if (mAttachInfo.mHardwareRenderer != null) { 821 mAttachInfo.mHardwareRenderer.destroy(); 822 } 823 824 final Rect insets = attrs.surfaceInsets; 825 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 826 || insets.top != 0 || insets.bottom != 0; 827 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 828 mAttachInfo.mHardwareRenderer = ThreadedRenderer.create(mContext, translucent); 829 if (mAttachInfo.mHardwareRenderer != null) { 830 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 831 mAttachInfo.mHardwareAccelerated = 832 mAttachInfo.mHardwareAccelerationRequested = true; 833 } 834 } 835 } 836 } 837 838 public View getView() { 839 return mView; 840 } 841 842 final WindowLeaked getLocation() { 843 return mLocation; 844 } 845 846 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 847 synchronized (this) { 848 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 849 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 850 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 851 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 852 final int oldSoftInputMode = mWindowAttributes.softInputMode; 853 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 854 855 // Keep track of the actual window flags supplied by the client. 856 mClientWindowLayoutFlags = attrs.flags; 857 858 // Preserve compatible window flag if exists. 859 final int compatibleWindowFlag = mWindowAttributes.privateFlags 860 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 861 862 // Transfer over system UI visibility values as they carry current state. 863 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 864 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 865 866 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 867 if ((mWindowAttributesChangesFlag 868 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 869 // Recompute system ui visibility. 870 mAttachInfo.mRecomputeGlobalAttributes = true; 871 } 872 if (mWindowAttributes.packageName == null) { 873 mWindowAttributes.packageName = mBasePackageName; 874 } 875 mWindowAttributes.privateFlags |= compatibleWindowFlag; 876 877 // Restore old surface insets. 878 mWindowAttributes.surfaceInsets.set( 879 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 880 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 881 882 applyKeepScreenOnFlag(mWindowAttributes); 883 884 if (newView) { 885 mSoftInputMode = attrs.softInputMode; 886 requestLayout(); 887 } 888 889 // Don't lose the mode we last auto-computed. 890 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 891 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 892 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 893 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 894 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 895 } 896 897 mWindowAttributesChanged = true; 898 scheduleTraversals(); 899 } 900 } 901 902 void handleAppVisibility(boolean visible) { 903 if (mAppVisible != visible) { 904 mAppVisible = visible; 905 scheduleTraversals(); 906 if (!mAppVisible) { 907 WindowManagerGlobal.trimForeground(); 908 } 909 } 910 } 911 912 void handleGetNewSurface() { 913 mNewSurfaceNeeded = true; 914 mFullRedrawNeeded = true; 915 scheduleTraversals(); 916 } 917 918 private final DisplayListener mDisplayListener = new DisplayListener() { 919 @Override 920 public void onDisplayChanged(int displayId) { 921 if (mView != null && mDisplay.getDisplayId() == displayId) { 922 final int oldDisplayState = mAttachInfo.mDisplayState; 923 final int newDisplayState = mDisplay.getState(); 924 if (oldDisplayState != newDisplayState) { 925 mAttachInfo.mDisplayState = newDisplayState; 926 pokeDrawLockIfNeeded(); 927 if (oldDisplayState != Display.STATE_UNKNOWN) { 928 final int oldScreenState = toViewScreenState(oldDisplayState); 929 final int newScreenState = toViewScreenState(newDisplayState); 930 if (oldScreenState != newScreenState) { 931 mView.dispatchScreenStateChanged(newScreenState); 932 } 933 if (oldDisplayState == Display.STATE_OFF) { 934 // Draw was suppressed so we need to for it to happen here. 935 mFullRedrawNeeded = true; 936 scheduleTraversals(); 937 } 938 } 939 } 940 } 941 } 942 943 @Override 944 public void onDisplayRemoved(int displayId) { 945 } 946 947 @Override 948 public void onDisplayAdded(int displayId) { 949 } 950 951 private int toViewScreenState(int displayState) { 952 return displayState == Display.STATE_OFF ? 953 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 954 } 955 }; 956 957 void pokeDrawLockIfNeeded() { 958 final int displayState = mAttachInfo.mDisplayState; 959 if (mView != null && mAdded && mTraversalScheduled 960 && (displayState == Display.STATE_DOZE 961 || displayState == Display.STATE_DOZE_SUSPEND)) { 962 try { 963 mWindowSession.pokeDrawLock(mWindow); 964 } catch (RemoteException ex) { 965 // System server died, oh well. 966 } 967 } 968 } 969 970 @Override 971 public void requestFitSystemWindows() { 972 checkThread(); 973 mApplyInsetsRequested = true; 974 scheduleTraversals(); 975 } 976 977 @Override 978 public void requestLayout() { 979 if (!mHandlingLayoutInLayoutRequest) { 980 checkThread(); 981 mLayoutRequested = true; 982 scheduleTraversals(); 983 } 984 } 985 986 @Override 987 public boolean isLayoutRequested() { 988 return mLayoutRequested; 989 } 990 991 void invalidate() { 992 mDirty.set(0, 0, mWidth, mHeight); 993 if (!mWillDrawSoon) { 994 scheduleTraversals(); 995 } 996 } 997 998 void invalidateWorld(View view) { 999 view.invalidate(); 1000 if (view instanceof ViewGroup) { 1001 ViewGroup parent = (ViewGroup) view; 1002 for (int i = 0; i < parent.getChildCount(); i++) { 1003 invalidateWorld(parent.getChildAt(i)); 1004 } 1005 } 1006 } 1007 1008 @Override 1009 public void invalidateChild(View child, Rect dirty) { 1010 invalidateChildInParent(null, dirty); 1011 } 1012 1013 @Override 1014 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 1015 checkThread(); 1016 if (DEBUG_DRAW) Log.v(mTag, "Invalidate child: " + dirty); 1017 1018 if (dirty == null) { 1019 invalidate(); 1020 return null; 1021 } else if (dirty.isEmpty() && !mIsAnimating) { 1022 return null; 1023 } 1024 1025 if (mCurScrollY != 0 || mTranslator != null) { 1026 mTempRect.set(dirty); 1027 dirty = mTempRect; 1028 if (mCurScrollY != 0) { 1029 dirty.offset(0, -mCurScrollY); 1030 } 1031 if (mTranslator != null) { 1032 mTranslator.translateRectInAppWindowToScreen(dirty); 1033 } 1034 if (mAttachInfo.mScalingRequired) { 1035 dirty.inset(-1, -1); 1036 } 1037 } 1038 1039 invalidateRectOnScreen(dirty); 1040 1041 return null; 1042 } 1043 1044 private void invalidateRectOnScreen(Rect dirty) { 1045 final Rect localDirty = mDirty; 1046 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 1047 mAttachInfo.mSetIgnoreDirtyState = true; 1048 mAttachInfo.mIgnoreDirtyState = true; 1049 } 1050 1051 // Add the new dirty rect to the current one 1052 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 1053 // Intersect with the bounds of the window to skip 1054 // updates that lie outside of the visible region 1055 final float appScale = mAttachInfo.mApplicationScale; 1056 final boolean intersected = localDirty.intersect(0, 0, 1057 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 1058 if (!intersected) { 1059 localDirty.setEmpty(); 1060 } 1061 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 1062 scheduleTraversals(); 1063 } 1064 } 1065 1066 public void setIsAmbientMode(boolean ambient) { 1067 mIsAmbientMode = ambient; 1068 } 1069 1070 void setWindowStopped(boolean stopped) { 1071 if (mStopped != stopped) { 1072 mStopped = stopped; 1073 if (!mStopped) { 1074 scheduleTraversals(); 1075 } 1076 } 1077 } 1078 1079 /** 1080 * Block the input events during an Activity Transition. The KEYCODE_BACK event is allowed 1081 * through to allow quick reversal of the Activity Transition. 1082 * 1083 * @param paused true to pause, false to resume. 1084 */ 1085 public void setPausedForTransition(boolean paused) { 1086 mPausedForTransition = paused; 1087 } 1088 1089 @Override 1090 public ViewParent getParent() { 1091 return null; 1092 } 1093 1094 @Override 1095 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 1096 if (child != mView) { 1097 throw new RuntimeException("child is not mine, honest!"); 1098 } 1099 // Note: don't apply scroll offset, because we want to know its 1100 // visibility in the virtual canvas being given to the view hierarchy. 1101 return r.intersect(0, 0, mWidth, mHeight); 1102 } 1103 1104 @Override 1105 public void bringChildToFront(View child) { 1106 } 1107 1108 int getHostVisibility() { 1109 return (mAppVisible || mForceDecorViewVisibility) ? mView.getVisibility() : View.GONE; 1110 } 1111 1112 /** 1113 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1114 * This list will be cleared after the transitions on the list are start()'ed. These 1115 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1116 * happens during the layout phase of traversal, which we want to complete before any of the 1117 * animations are started (because those animations may side-effect properties that layout 1118 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1119 * to the list and it is started just prior to starting the drawing phase of traversal. 1120 * 1121 * @param transition The LayoutTransition to be started on the next traversal. 1122 * 1123 * @hide 1124 */ 1125 public void requestTransitionStart(LayoutTransition transition) { 1126 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1127 if (mPendingTransitions == null) { 1128 mPendingTransitions = new ArrayList<LayoutTransition>(); 1129 } 1130 mPendingTransitions.add(transition); 1131 } 1132 } 1133 1134 /** 1135 * Notifies the HardwareRenderer that a new frame will be coming soon. 1136 * Currently only {@link ThreadedRenderer} cares about this, and uses 1137 * this knowledge to adjust the scheduling of off-thread animations 1138 */ 1139 void notifyRendererOfFramePending() { 1140 if (mAttachInfo.mHardwareRenderer != null) { 1141 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1142 } 1143 } 1144 1145 void scheduleTraversals() { 1146 if (!mTraversalScheduled) { 1147 mTraversalScheduled = true; 1148 mTraversalBarrier = mHandler.getLooper().getQueue().postSyncBarrier(); 1149 mChoreographer.postCallback( 1150 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1151 if (!mUnbufferedInputDispatch) { 1152 scheduleConsumeBatchedInput(); 1153 } 1154 notifyRendererOfFramePending(); 1155 pokeDrawLockIfNeeded(); 1156 } 1157 } 1158 1159 void unscheduleTraversals() { 1160 if (mTraversalScheduled) { 1161 mTraversalScheduled = false; 1162 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1163 mChoreographer.removeCallbacks( 1164 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1165 } 1166 } 1167 1168 void doTraversal() { 1169 if (mTraversalScheduled) { 1170 mTraversalScheduled = false; 1171 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1172 1173 if (mProfile) { 1174 Debug.startMethodTracing("ViewAncestor"); 1175 } 1176 1177 performTraversals(); 1178 1179 if (mProfile) { 1180 Debug.stopMethodTracing(); 1181 mProfile = false; 1182 } 1183 } 1184 } 1185 1186 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1187 // Update window's global keep screen on flag: if a view has requested 1188 // that the screen be kept on, then it is always set; otherwise, it is 1189 // set to whatever the client last requested for the global state. 1190 if (mAttachInfo.mKeepScreenOn) { 1191 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1192 } else { 1193 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1194 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1195 } 1196 } 1197 1198 private boolean collectViewAttributes() { 1199 if (mAttachInfo.mRecomputeGlobalAttributes) { 1200 //Log.i(mTag, "Computing view hierarchy attributes!"); 1201 mAttachInfo.mRecomputeGlobalAttributes = false; 1202 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1203 mAttachInfo.mKeepScreenOn = false; 1204 mAttachInfo.mSystemUiVisibility = 0; 1205 mAttachInfo.mHasSystemUiListeners = false; 1206 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1207 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1208 WindowManager.LayoutParams params = mWindowAttributes; 1209 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1210 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1211 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1212 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1213 applyKeepScreenOnFlag(params); 1214 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1215 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1216 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1217 return true; 1218 } 1219 } 1220 return false; 1221 } 1222 1223 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1224 int vis = 0; 1225 // Translucent decor window flags imply stable system ui visibility. 1226 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1227 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1228 } 1229 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1230 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1231 } 1232 return vis; 1233 } 1234 1235 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1236 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1237 int childWidthMeasureSpec; 1238 int childHeightMeasureSpec; 1239 boolean windowSizeMayChange = false; 1240 1241 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(mTag, 1242 "Measuring " + host + " in display " + desiredWindowWidth 1243 + "x" + desiredWindowHeight + "..."); 1244 1245 boolean goodMeasure = false; 1246 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1247 // On large screens, we don't want to allow dialogs to just 1248 // stretch to fill the entire width of the screen to display 1249 // one line of text. First try doing the layout at a smaller 1250 // size to see if it will fit. 1251 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1252 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1253 int baseSize = 0; 1254 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1255 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1256 } 1257 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": baseSize=" + baseSize 1258 + ", desiredWindowWidth=" + desiredWindowWidth); 1259 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1260 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1261 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1262 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1263 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1264 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() 1265 + ") from width spec: " + MeasureSpec.toString(childWidthMeasureSpec) 1266 + " and height spec: " + MeasureSpec.toString(childHeightMeasureSpec)); 1267 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1268 goodMeasure = true; 1269 } else { 1270 // Didn't fit in that size... try expanding a bit. 1271 baseSize = (baseSize+desiredWindowWidth)/2; 1272 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": next baseSize=" 1273 + baseSize); 1274 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1275 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1276 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1277 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1278 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1279 if (DEBUG_DIALOG) Log.v(mTag, "Good!"); 1280 goodMeasure = true; 1281 } 1282 } 1283 } 1284 } 1285 1286 if (!goodMeasure) { 1287 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1288 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1289 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1290 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1291 windowSizeMayChange = true; 1292 } 1293 } 1294 1295 if (DBG) { 1296 System.out.println("======================================"); 1297 System.out.println("performTraversals -- after measure"); 1298 host.debug(); 1299 } 1300 1301 return windowSizeMayChange; 1302 } 1303 1304 /** 1305 * Modifies the input matrix such that it maps view-local coordinates to 1306 * on-screen coordinates. 1307 * 1308 * @param m input matrix to modify 1309 */ 1310 void transformMatrixToGlobal(Matrix m) { 1311 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1312 } 1313 1314 /** 1315 * Modifies the input matrix such that it maps on-screen coordinates to 1316 * view-local coordinates. 1317 * 1318 * @param m input matrix to modify 1319 */ 1320 void transformMatrixToLocal(Matrix m) { 1321 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1322 } 1323 1324 /* package */ WindowInsets getWindowInsets(boolean forceConstruct) { 1325 if (mLastWindowInsets == null || forceConstruct) { 1326 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1327 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1328 Rect contentInsets = mDispatchContentInsets; 1329 Rect stableInsets = mDispatchStableInsets; 1330 // For dispatch we preserve old logic, but for direct requests from Views we allow to 1331 // immediately use pending insets. 1332 if (!forceConstruct 1333 && (!mPendingContentInsets.equals(contentInsets) || 1334 !mPendingStableInsets.equals(stableInsets))) { 1335 contentInsets = mPendingContentInsets; 1336 stableInsets = mPendingStableInsets; 1337 } 1338 Rect outsets = mAttachInfo.mOutsets; 1339 if (outsets.left > 0 || outsets.top > 0 || outsets.right > 0 || outsets.bottom > 0) { 1340 contentInsets = new Rect(contentInsets.left + outsets.left, 1341 contentInsets.top + outsets.top, contentInsets.right + outsets.right, 1342 contentInsets.bottom + outsets.bottom); 1343 } 1344 mLastWindowInsets = new WindowInsets(contentInsets, 1345 null /* windowDecorInsets */, stableInsets, 1346 mContext.getResources().getConfiguration().isScreenRound()); 1347 } 1348 return mLastWindowInsets; 1349 } 1350 1351 void dispatchApplyInsets(View host) { 1352 host.dispatchApplyWindowInsets(getWindowInsets(true /* forceConstruct */)); 1353 } 1354 1355 private static boolean shouldUseDisplaySize(final WindowManager.LayoutParams lp) { 1356 return lp.type == TYPE_STATUS_BAR_PANEL 1357 || lp.type == TYPE_INPUT_METHOD 1358 || lp.type == TYPE_VOLUME_OVERLAY; 1359 } 1360 1361 private int dipToPx(int dip) { 1362 final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics(); 1363 return (int) (displayMetrics.density * dip + 0.5f); 1364 } 1365 1366 private void performTraversals() { 1367 // cache mView since it is used so much below... 1368 final View host = mView; 1369 1370 if (DBG) { 1371 System.out.println("======================================"); 1372 System.out.println("performTraversals"); 1373 host.debug(); 1374 } 1375 1376 if (host == null || !mAdded) 1377 return; 1378 1379 mIsInTraversal = true; 1380 mWillDrawSoon = true; 1381 boolean windowSizeMayChange = false; 1382 boolean newSurface = false; 1383 boolean surfaceChanged = false; 1384 WindowManager.LayoutParams lp = mWindowAttributes; 1385 1386 int desiredWindowWidth; 1387 int desiredWindowHeight; 1388 1389 final int viewVisibility = getHostVisibility(); 1390 final boolean viewVisibilityChanged = !mFirst 1391 && (mViewVisibility != viewVisibility || mNewSurfaceNeeded); 1392 1393 WindowManager.LayoutParams params = null; 1394 if (mWindowAttributesChanged) { 1395 mWindowAttributesChanged = false; 1396 surfaceChanged = true; 1397 params = lp; 1398 } 1399 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1400 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1401 params = lp; 1402 mFullRedrawNeeded = true; 1403 mLayoutRequested = true; 1404 if (mLastInCompatMode) { 1405 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1406 mLastInCompatMode = false; 1407 } else { 1408 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1409 mLastInCompatMode = true; 1410 } 1411 } 1412 1413 mWindowAttributesChangesFlag = 0; 1414 1415 Rect frame = mWinFrame; 1416 if (mFirst) { 1417 mFullRedrawNeeded = true; 1418 mLayoutRequested = true; 1419 1420 if (shouldUseDisplaySize(lp)) { 1421 // NOTE -- system code, won't try to do compat mode. 1422 Point size = new Point(); 1423 mDisplay.getRealSize(size); 1424 desiredWindowWidth = size.x; 1425 desiredWindowHeight = size.y; 1426 } else { 1427 Configuration config = mContext.getResources().getConfiguration(); 1428 desiredWindowWidth = dipToPx(config.screenWidthDp); 1429 desiredWindowHeight = dipToPx(config.screenHeightDp); 1430 } 1431 1432 // We used to use the following condition to choose 32 bits drawing caches: 1433 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1434 // However, windows are now always 32 bits by default, so choose 32 bits 1435 mAttachInfo.mUse32BitDrawingCache = true; 1436 mAttachInfo.mHasWindowFocus = false; 1437 mAttachInfo.mWindowVisibility = viewVisibility; 1438 mAttachInfo.mRecomputeGlobalAttributes = false; 1439 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1440 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1441 // Set the layout direction if it has not been set before (inherit is the default) 1442 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1443 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1444 } 1445 host.dispatchAttachedToWindow(mAttachInfo, 0); 1446 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1447 dispatchApplyInsets(host); 1448 //Log.i(mTag, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1449 1450 } else { 1451 desiredWindowWidth = frame.width(); 1452 desiredWindowHeight = frame.height(); 1453 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1454 if (DEBUG_ORIENTATION) Log.v(mTag, "View " + host + " resized to: " + frame); 1455 mFullRedrawNeeded = true; 1456 mLayoutRequested = true; 1457 windowSizeMayChange = true; 1458 } 1459 } 1460 1461 if (viewVisibilityChanged) { 1462 mAttachInfo.mWindowVisibility = viewVisibility; 1463 host.dispatchWindowVisibilityChanged(viewVisibility); 1464 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1465 endDragResizing(); 1466 destroyHardwareResources(); 1467 } 1468 if (viewVisibility == View.GONE) { 1469 // After making a window gone, we will count it as being 1470 // shown for the first time the next time it gets focus. 1471 mHasHadWindowFocus = false; 1472 } 1473 } 1474 1475 // Non-visible windows can't hold accessibility focus. 1476 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1477 host.clearAccessibilityFocus(); 1478 } 1479 1480 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1481 getRunQueue().executeActions(mAttachInfo.mHandler); 1482 1483 boolean insetsChanged = false; 1484 1485 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1486 if (layoutRequested) { 1487 1488 final Resources res = mView.getContext().getResources(); 1489 1490 if (mFirst) { 1491 // make sure touch mode code executes by setting cached value 1492 // to opposite of the added touch mode. 1493 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1494 ensureTouchModeLocally(mAddedTouchMode); 1495 } else { 1496 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1497 insetsChanged = true; 1498 } 1499 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1500 insetsChanged = true; 1501 } 1502 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1503 insetsChanged = true; 1504 } 1505 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1506 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1507 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1508 + mAttachInfo.mVisibleInsets); 1509 } 1510 if (!mPendingOutsets.equals(mAttachInfo.mOutsets)) { 1511 insetsChanged = true; 1512 } 1513 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1514 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1515 windowSizeMayChange = true; 1516 1517 if (shouldUseDisplaySize(lp)) { 1518 // NOTE -- system code, won't try to do compat mode. 1519 Point size = new Point(); 1520 mDisplay.getRealSize(size); 1521 desiredWindowWidth = size.x; 1522 desiredWindowHeight = size.y; 1523 } else { 1524 Configuration config = res.getConfiguration(); 1525 desiredWindowWidth = dipToPx(config.screenWidthDp); 1526 desiredWindowHeight = dipToPx(config.screenHeightDp); 1527 } 1528 } 1529 } 1530 1531 // Ask host how big it wants to be 1532 windowSizeMayChange |= measureHierarchy(host, lp, res, 1533 desiredWindowWidth, desiredWindowHeight); 1534 } 1535 1536 if (collectViewAttributes()) { 1537 params = lp; 1538 } 1539 if (mAttachInfo.mForceReportNewAttributes) { 1540 mAttachInfo.mForceReportNewAttributes = false; 1541 params = lp; 1542 } 1543 1544 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1545 mAttachInfo.mViewVisibilityChanged = false; 1546 int resizeMode = mSoftInputMode & 1547 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1548 // If we are in auto resize mode, then we need to determine 1549 // what mode to use now. 1550 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1551 final int N = mAttachInfo.mScrollContainers.size(); 1552 for (int i=0; i<N; i++) { 1553 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1554 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1555 } 1556 } 1557 if (resizeMode == 0) { 1558 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1559 } 1560 if ((lp.softInputMode & 1561 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1562 lp.softInputMode = (lp.softInputMode & 1563 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1564 resizeMode; 1565 params = lp; 1566 } 1567 } 1568 } 1569 1570 if (params != null) { 1571 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1572 if (!PixelFormat.formatHasAlpha(params.format)) { 1573 params.format = PixelFormat.TRANSLUCENT; 1574 } 1575 } 1576 mAttachInfo.mOverscanRequested = (params.flags 1577 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1578 } 1579 1580 if (mApplyInsetsRequested) { 1581 mApplyInsetsRequested = false; 1582 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1583 dispatchApplyInsets(host); 1584 if (mLayoutRequested) { 1585 // Short-circuit catching a new layout request here, so 1586 // we don't need to go through two layout passes when things 1587 // change due to fitting system windows, which can happen a lot. 1588 windowSizeMayChange |= measureHierarchy(host, lp, 1589 mView.getContext().getResources(), 1590 desiredWindowWidth, desiredWindowHeight); 1591 } 1592 } 1593 1594 if (layoutRequested) { 1595 // Clear this now, so that if anything requests a layout in the 1596 // rest of this function we will catch it and re-run a full 1597 // layout pass. 1598 mLayoutRequested = false; 1599 } 1600 1601 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1602 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1603 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1604 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1605 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1606 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1607 windowShouldResize |= mDragResizing && mResizeMode == RESIZE_MODE_FREEFORM; 1608 1609 // If the activity was just relaunched, it might have unfrozen the task bounds (while 1610 // relaunching), so we need to force a call into window manager to pick up the latest 1611 // bounds. 1612 windowShouldResize |= mActivityRelaunched; 1613 1614 // Determine whether to compute insets. 1615 // If there are no inset listeners remaining then we may still need to compute 1616 // insets in case the old insets were non-empty and must be reset. 1617 final boolean computesInternalInsets = 1618 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1619 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1620 1621 boolean insetsPending = false; 1622 int relayoutResult = 0; 1623 1624 final boolean isViewVisible = viewVisibility == View.VISIBLE; 1625 if (mFirst || windowShouldResize || insetsChanged || 1626 viewVisibilityChanged || params != null || mForceNextWindowRelayout) { 1627 mForceNextWindowRelayout = false; 1628 1629 if (isViewVisible) { 1630 // If this window is giving internal insets to the window 1631 // manager, and it is being added or changing its visibility, 1632 // then we want to first give the window manager "fake" 1633 // insets to cause it to effectively ignore the content of 1634 // the window during layout. This avoids it briefly causing 1635 // other windows to resize/move based on the raw frame of the 1636 // window, waiting until we can finish laying out this window 1637 // and get back to the window manager with the ultimately 1638 // computed insets. 1639 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1640 } 1641 1642 if (mSurfaceHolder != null) { 1643 mSurfaceHolder.mSurfaceLock.lock(); 1644 mDrawingAllowed = true; 1645 } 1646 1647 boolean hwInitialized = false; 1648 boolean contentInsetsChanged = false; 1649 boolean hadSurface = mSurface.isValid(); 1650 1651 try { 1652 if (DEBUG_LAYOUT) { 1653 Log.i(mTag, "host=w:" + host.getMeasuredWidth() + ", h:" + 1654 host.getMeasuredHeight() + ", params=" + params); 1655 } 1656 1657 if (mAttachInfo.mHardwareRenderer != null) { 1658 // relayoutWindow may decide to destroy mSurface. As that decision 1659 // happens in WindowManager service, we need to be defensive here 1660 // and stop using the surface in case it gets destroyed. 1661 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1662 // Animations were running so we need to push a frame 1663 // to resume them 1664 mDirty.set(0, 0, mWidth, mHeight); 1665 } 1666 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1667 } 1668 final int surfaceGenerationId = mSurface.getGenerationId(); 1669 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1670 1671 if (DEBUG_LAYOUT) Log.v(mTag, "relayout: frame=" + frame.toShortString() 1672 + " overscan=" + mPendingOverscanInsets.toShortString() 1673 + " content=" + mPendingContentInsets.toShortString() 1674 + " visible=" + mPendingVisibleInsets.toShortString() 1675 + " visible=" + mPendingStableInsets.toShortString() 1676 + " outsets=" + mPendingOutsets.toShortString() 1677 + " surface=" + mSurface); 1678 1679 if (mPendingConfiguration.seq != 0) { 1680 if (DEBUG_CONFIGURATION) Log.v(mTag, "Visible with new config: " 1681 + mPendingConfiguration); 1682 updateConfiguration(new Configuration(mPendingConfiguration), !mFirst); 1683 mPendingConfiguration.seq = 0; 1684 } 1685 1686 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1687 mAttachInfo.mOverscanInsets); 1688 contentInsetsChanged = !mPendingContentInsets.equals( 1689 mAttachInfo.mContentInsets); 1690 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1691 mAttachInfo.mVisibleInsets); 1692 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1693 mAttachInfo.mStableInsets); 1694 final boolean outsetsChanged = !mPendingOutsets.equals(mAttachInfo.mOutsets); 1695 final boolean surfaceSizeChanged = (relayoutResult 1696 & WindowManagerGlobal.RELAYOUT_RES_SURFACE_RESIZED) != 0; 1697 if (contentInsetsChanged) { 1698 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1699 if (DEBUG_LAYOUT) Log.v(mTag, "Content insets changing to: " 1700 + mAttachInfo.mContentInsets); 1701 } 1702 if (overscanInsetsChanged) { 1703 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1704 if (DEBUG_LAYOUT) Log.v(mTag, "Overscan insets changing to: " 1705 + mAttachInfo.mOverscanInsets); 1706 // Need to relayout with content insets. 1707 contentInsetsChanged = true; 1708 } 1709 if (stableInsetsChanged) { 1710 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1711 if (DEBUG_LAYOUT) Log.v(mTag, "Decor insets changing to: " 1712 + mAttachInfo.mStableInsets); 1713 // Need to relayout with content insets. 1714 contentInsetsChanged = true; 1715 } 1716 if (contentInsetsChanged || mLastSystemUiVisibility != 1717 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1718 || mLastOverscanRequested != mAttachInfo.mOverscanRequested 1719 || outsetsChanged) { 1720 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1721 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1722 mAttachInfo.mOutsets.set(mPendingOutsets); 1723 mApplyInsetsRequested = false; 1724 dispatchApplyInsets(host); 1725 } 1726 if (visibleInsetsChanged) { 1727 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1728 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1729 + mAttachInfo.mVisibleInsets); 1730 } 1731 1732 if (!hadSurface) { 1733 if (mSurface.isValid()) { 1734 // If we are creating a new surface, then we need to 1735 // completely redraw it. Also, when we get to the 1736 // point of drawing it we will hold off and schedule 1737 // a new traversal instead. This is so we can tell the 1738 // window manager about all of the windows being displayed 1739 // before actually drawing them, so it can display then 1740 // all at once. 1741 newSurface = true; 1742 mFullRedrawNeeded = true; 1743 mPreviousTransparentRegion.setEmpty(); 1744 1745 // Only initialize up-front if transparent regions are not 1746 // requested, otherwise defer to see if the entire window 1747 // will be transparent 1748 if (mAttachInfo.mHardwareRenderer != null) { 1749 try { 1750 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1751 mSurface); 1752 if (hwInitialized && (host.mPrivateFlags 1753 & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) == 0) { 1754 // Don't pre-allocate if transparent regions 1755 // are requested as they may not be needed 1756 mSurface.allocateBuffers(); 1757 } 1758 } catch (OutOfResourcesException e) { 1759 handleOutOfResourcesException(e); 1760 return; 1761 } 1762 } 1763 } 1764 } else if (!mSurface.isValid()) { 1765 // If the surface has been removed, then reset the scroll 1766 // positions. 1767 if (mLastScrolledFocus != null) { 1768 mLastScrolledFocus.clear(); 1769 } 1770 mScrollY = mCurScrollY = 0; 1771 if (mView instanceof RootViewSurfaceTaker) { 1772 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1773 } 1774 if (mScroller != null) { 1775 mScroller.abortAnimation(); 1776 } 1777 // Our surface is gone 1778 if (mAttachInfo.mHardwareRenderer != null && 1779 mAttachInfo.mHardwareRenderer.isEnabled()) { 1780 mAttachInfo.mHardwareRenderer.destroy(); 1781 } 1782 } else if ((surfaceGenerationId != mSurface.getGenerationId() 1783 || surfaceSizeChanged) 1784 && mSurfaceHolder == null 1785 && mAttachInfo.mHardwareRenderer != null) { 1786 mFullRedrawNeeded = true; 1787 try { 1788 // Need to do updateSurface (which leads to CanvasContext::setSurface and 1789 // re-create the EGLSurface) if either the Surface changed (as indicated by 1790 // generation id), or WindowManager changed the surface size. The latter is 1791 // because on some chips, changing the consumer side's BufferQueue size may 1792 // not take effect immediately unless we create a new EGLSurface. 1793 // Note that frame size change doesn't always imply surface size change (eg. 1794 // drag resizing uses fullscreen surface), need to check surfaceSizeChanged 1795 // flag from WindowManager. 1796 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1797 } catch (OutOfResourcesException e) { 1798 handleOutOfResourcesException(e); 1799 return; 1800 } 1801 } 1802 1803 final boolean freeformResizing = (relayoutResult 1804 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_FREEFORM) != 0; 1805 final boolean dockedResizing = (relayoutResult 1806 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_DOCKED) != 0; 1807 final boolean dragResizing = freeformResizing || dockedResizing; 1808 if (mDragResizing != dragResizing) { 1809 if (dragResizing) { 1810 startDragResizing(mPendingBackDropFrame, 1811 mWinFrame.equals(mPendingBackDropFrame), mPendingVisibleInsets, 1812 mPendingStableInsets); 1813 mResizeMode = freeformResizing 1814 ? RESIZE_MODE_FREEFORM 1815 : RESIZE_MODE_DOCKED_DIVIDER; 1816 } else { 1817 // We shouldn't come here, but if we come we should end the resize. 1818 endDragResizing(); 1819 } 1820 } 1821 if (!USE_MT_RENDERER) { 1822 if (dragResizing) { 1823 mCanvasOffsetX = mWinFrame.left; 1824 mCanvasOffsetY = mWinFrame.top; 1825 } else { 1826 mCanvasOffsetX = mCanvasOffsetY = 0; 1827 } 1828 } 1829 } catch (RemoteException e) { 1830 } 1831 1832 if (DEBUG_ORIENTATION) Log.v( 1833 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1834 1835 mAttachInfo.mWindowLeft = frame.left; 1836 mAttachInfo.mWindowTop = frame.top; 1837 1838 // !!FIXME!! This next section handles the case where we did not get the 1839 // window size we asked for. We should avoid this by getting a maximum size from 1840 // the window session beforehand. 1841 if (mWidth != frame.width() || mHeight != frame.height()) { 1842 mWidth = frame.width(); 1843 mHeight = frame.height(); 1844 } 1845 1846 if (mSurfaceHolder != null) { 1847 // The app owns the surface; tell it about what is going on. 1848 if (mSurface.isValid()) { 1849 // XXX .copyFrom() doesn't work! 1850 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1851 mSurfaceHolder.mSurface = mSurface; 1852 } 1853 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1854 mSurfaceHolder.mSurfaceLock.unlock(); 1855 if (mSurface.isValid()) { 1856 if (!hadSurface) { 1857 mSurfaceHolder.ungetCallbacks(); 1858 1859 mIsCreating = true; 1860 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1861 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1862 if (callbacks != null) { 1863 for (SurfaceHolder.Callback c : callbacks) { 1864 c.surfaceCreated(mSurfaceHolder); 1865 } 1866 } 1867 surfaceChanged = true; 1868 } 1869 if (surfaceChanged) { 1870 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1871 lp.format, mWidth, mHeight); 1872 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1873 if (callbacks != null) { 1874 for (SurfaceHolder.Callback c : callbacks) { 1875 c.surfaceChanged(mSurfaceHolder, lp.format, 1876 mWidth, mHeight); 1877 } 1878 } 1879 } 1880 mIsCreating = false; 1881 } else if (hadSurface) { 1882 mSurfaceHolder.ungetCallbacks(); 1883 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1884 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1885 if (callbacks != null) { 1886 for (SurfaceHolder.Callback c : callbacks) { 1887 c.surfaceDestroyed(mSurfaceHolder); 1888 } 1889 } 1890 mSurfaceHolder.mSurfaceLock.lock(); 1891 try { 1892 mSurfaceHolder.mSurface = new Surface(); 1893 } finally { 1894 mSurfaceHolder.mSurfaceLock.unlock(); 1895 } 1896 } 1897 } 1898 1899 final ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 1900 if (hardwareRenderer != null && hardwareRenderer.isEnabled()) { 1901 if (hwInitialized 1902 || mWidth != hardwareRenderer.getWidth() 1903 || mHeight != hardwareRenderer.getHeight()) { 1904 hardwareRenderer.setup(mWidth, mHeight, mAttachInfo, 1905 mWindowAttributes.surfaceInsets); 1906 } 1907 } 1908 1909 if (!mStopped || mReportNextDraw) { 1910 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1911 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1912 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1913 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1914 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1915 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1916 1917 if (DEBUG_LAYOUT) Log.v(mTag, "Ooops, something changed! mWidth=" 1918 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1919 + " mHeight=" + mHeight 1920 + " measuredHeight=" + host.getMeasuredHeight() 1921 + " coveredInsetsChanged=" + contentInsetsChanged); 1922 1923 // Ask host how big it wants to be 1924 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1925 1926 // Implementation of weights from WindowManager.LayoutParams 1927 // We just grow the dimensions as needed and re-measure if 1928 // needs be 1929 int width = host.getMeasuredWidth(); 1930 int height = host.getMeasuredHeight(); 1931 boolean measureAgain = false; 1932 1933 if (lp.horizontalWeight > 0.0f) { 1934 width += (int) ((mWidth - width) * lp.horizontalWeight); 1935 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1936 MeasureSpec.EXACTLY); 1937 measureAgain = true; 1938 } 1939 if (lp.verticalWeight > 0.0f) { 1940 height += (int) ((mHeight - height) * lp.verticalWeight); 1941 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1942 MeasureSpec.EXACTLY); 1943 measureAgain = true; 1944 } 1945 1946 if (measureAgain) { 1947 if (DEBUG_LAYOUT) Log.v(mTag, 1948 "And hey let's measure once more: width=" + width 1949 + " height=" + height); 1950 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1951 } 1952 1953 layoutRequested = true; 1954 } 1955 } 1956 } else { 1957 // Not the first pass and no window/insets/visibility change but the window 1958 // may have moved and we need check that and if so to update the left and right 1959 // in the attach info. We translate only the window frame since on window move 1960 // the window manager tells us only for the new frame but the insets are the 1961 // same and we do not want to translate them more than once. 1962 maybeHandleWindowMove(frame); 1963 } 1964 1965 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 1966 boolean triggerGlobalLayoutListener = didLayout 1967 || mAttachInfo.mRecomputeGlobalAttributes; 1968 if (didLayout) { 1969 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1970 1971 // By this point all views have been sized and positioned 1972 // We can compute the transparent area 1973 1974 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1975 // start out transparent 1976 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1977 host.getLocationInWindow(mTmpLocation); 1978 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1979 mTmpLocation[0] + host.mRight - host.mLeft, 1980 mTmpLocation[1] + host.mBottom - host.mTop); 1981 1982 host.gatherTransparentRegion(mTransparentRegion); 1983 if (mTranslator != null) { 1984 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1985 } 1986 1987 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1988 mPreviousTransparentRegion.set(mTransparentRegion); 1989 mFullRedrawNeeded = true; 1990 // reconfigure window manager 1991 try { 1992 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1993 } catch (RemoteException e) { 1994 } 1995 } 1996 } 1997 1998 if (DBG) { 1999 System.out.println("======================================"); 2000 System.out.println("performTraversals -- after setFrame"); 2001 host.debug(); 2002 } 2003 } 2004 2005 if (triggerGlobalLayoutListener) { 2006 mAttachInfo.mRecomputeGlobalAttributes = false; 2007 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 2008 } 2009 2010 if (computesInternalInsets) { 2011 // Clear the original insets. 2012 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 2013 insets.reset(); 2014 2015 // Compute new insets in place. 2016 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 2017 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 2018 2019 // Tell the window manager. 2020 if (insetsPending || !mLastGivenInsets.equals(insets)) { 2021 mLastGivenInsets.set(insets); 2022 2023 // Translate insets to screen coordinates if needed. 2024 final Rect contentInsets; 2025 final Rect visibleInsets; 2026 final Region touchableRegion; 2027 if (mTranslator != null) { 2028 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 2029 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 2030 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 2031 } else { 2032 contentInsets = insets.contentInsets; 2033 visibleInsets = insets.visibleInsets; 2034 touchableRegion = insets.touchableRegion; 2035 } 2036 2037 try { 2038 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 2039 contentInsets, visibleInsets, touchableRegion); 2040 } catch (RemoteException e) { 2041 } 2042 } 2043 } 2044 2045 if (mFirst) { 2046 // handle first focus request 2047 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: mView.hasFocus()=" 2048 + mView.hasFocus()); 2049 if (mView != null) { 2050 if (!mView.hasFocus()) { 2051 mView.requestFocus(View.FOCUS_FORWARD); 2052 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: requested focused view=" 2053 + mView.findFocus()); 2054 } else { 2055 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: existing focused view=" 2056 + mView.findFocus()); 2057 } 2058 } 2059 } 2060 2061 final boolean changedVisibility = (viewVisibilityChanged || mFirst) && isViewVisible; 2062 final boolean hasWindowFocus = mAttachInfo.mHasWindowFocus && isViewVisible; 2063 final boolean regainedFocus = hasWindowFocus && mLostWindowFocus; 2064 if (regainedFocus) { 2065 mLostWindowFocus = false; 2066 } else if (!hasWindowFocus && mHadWindowFocus) { 2067 mLostWindowFocus = true; 2068 } 2069 2070 if (changedVisibility || regainedFocus) { 2071 host.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2072 } 2073 2074 mFirst = false; 2075 mWillDrawSoon = false; 2076 mNewSurfaceNeeded = false; 2077 mActivityRelaunched = false; 2078 mViewVisibility = viewVisibility; 2079 mHadWindowFocus = hasWindowFocus; 2080 2081 if (hasWindowFocus && !isInLocalFocusMode()) { 2082 final boolean imTarget = WindowManager.LayoutParams 2083 .mayUseInputMethod(mWindowAttributes.flags); 2084 if (imTarget != mLastWasImTarget) { 2085 mLastWasImTarget = imTarget; 2086 InputMethodManager imm = InputMethodManager.peekInstance(); 2087 if (imm != null && imTarget) { 2088 imm.onPreWindowFocus(mView, hasWindowFocus); 2089 imm.onPostWindowFocus(mView, mView.findFocus(), 2090 mWindowAttributes.softInputMode, 2091 !mHasHadWindowFocus, mWindowAttributes.flags); 2092 } 2093 } 2094 } 2095 2096 // Remember if we must report the next draw. 2097 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 2098 mReportNextDraw = true; 2099 } 2100 2101 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || !isViewVisible; 2102 2103 if (!cancelDraw) { 2104 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2105 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2106 mPendingTransitions.get(i).startChangingAnimations(); 2107 } 2108 mPendingTransitions.clear(); 2109 } 2110 2111 performDraw(); 2112 } else { 2113 if (isViewVisible) { 2114 // Try again 2115 scheduleTraversals(); 2116 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2117 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2118 mPendingTransitions.get(i).endChangingAnimations(); 2119 } 2120 mPendingTransitions.clear(); 2121 } 2122 } 2123 2124 mIsInTraversal = false; 2125 } 2126 2127 private void maybeHandleWindowMove(Rect frame) { 2128 2129 // TODO: Well, we are checking whether the frame has changed similarly 2130 // to how this is done for the insets. This is however incorrect since 2131 // the insets and the frame are translated. For example, the old frame 2132 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 2133 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 2134 // true since we are comparing a not translated value to a translated one. 2135 // This scenario is rare but we may want to fix that. 2136 2137 final boolean windowMoved = mAttachInfo.mWindowLeft != frame.left 2138 || mAttachInfo.mWindowTop != frame.top; 2139 if (windowMoved) { 2140 if (mTranslator != null) { 2141 mTranslator.translateRectInScreenToAppWinFrame(frame); 2142 } 2143 mAttachInfo.mWindowLeft = frame.left; 2144 mAttachInfo.mWindowTop = frame.top; 2145 2146 // Update the light position for the new window offsets. 2147 if (mAttachInfo.mHardwareRenderer != null) { 2148 mAttachInfo.mHardwareRenderer.setLightCenter(mAttachInfo); 2149 } 2150 } 2151 } 2152 2153 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2154 Log.e(mTag, "OutOfResourcesException initializing HW surface", e); 2155 try { 2156 if (!mWindowSession.outOfMemory(mWindow) && 2157 Process.myUid() != Process.SYSTEM_UID) { 2158 Slog.w(mTag, "No processes killed for memory; killing self"); 2159 Process.killProcess(Process.myPid()); 2160 } 2161 } catch (RemoteException ex) { 2162 } 2163 mLayoutRequested = true; // ask wm for a new surface next time. 2164 } 2165 2166 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2167 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2168 try { 2169 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2170 } finally { 2171 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2172 } 2173 } 2174 2175 /** 2176 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2177 * is currently undergoing a layout pass. 2178 * 2179 * @return whether the view hierarchy is currently undergoing a layout pass 2180 */ 2181 boolean isInLayout() { 2182 return mInLayout; 2183 } 2184 2185 /** 2186 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2187 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2188 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2189 * all children in that container hierarchy are measured and laid out at the end of the layout 2190 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2191 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2192 * we check all of those views to see if any still have pending layout requests, which 2193 * indicates that they were not correctly handled by their container hierarchy. If that is 2194 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2195 * to blank containers, and force a second request/measure/layout pass in this frame. If 2196 * more requestLayout() calls are received during that second layout pass, we post those 2197 * requests to the next frame to avoid possible infinite loops. 2198 * 2199 * <p>The return value from this method indicates whether the request should proceed 2200 * (if it is a request during the first layout pass) or should be skipped and posted to the 2201 * next frame (if it is a request during the second layout pass).</p> 2202 * 2203 * @param view the view that requested the layout. 2204 * 2205 * @return true if request should proceed, false otherwise. 2206 */ 2207 boolean requestLayoutDuringLayout(final View view) { 2208 if (view.mParent == null || view.mAttachInfo == null) { 2209 // Would not normally trigger another layout, so just let it pass through as usual 2210 return true; 2211 } 2212 if (!mLayoutRequesters.contains(view)) { 2213 mLayoutRequesters.add(view); 2214 } 2215 if (!mHandlingLayoutInLayoutRequest) { 2216 // Let the request proceed normally; it will be processed in a second layout pass 2217 // if necessary 2218 return true; 2219 } else { 2220 // Don't let the request proceed during the second layout pass. 2221 // It will post to the next frame instead. 2222 return false; 2223 } 2224 } 2225 2226 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2227 int desiredWindowHeight) { 2228 mLayoutRequested = false; 2229 mScrollMayChange = true; 2230 mInLayout = true; 2231 2232 final View host = mView; 2233 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2234 Log.v(mTag, "Laying out " + host + " to (" + 2235 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2236 } 2237 2238 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2239 try { 2240 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2241 2242 mInLayout = false; 2243 int numViewsRequestingLayout = mLayoutRequesters.size(); 2244 if (numViewsRequestingLayout > 0) { 2245 // requestLayout() was called during layout. 2246 // If no layout-request flags are set on the requesting views, there is no problem. 2247 // If some requests are still pending, then we need to clear those flags and do 2248 // a full request/measure/layout pass to handle this situation. 2249 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2250 false); 2251 if (validLayoutRequesters != null) { 2252 // Set this flag to indicate that any further requests are happening during 2253 // the second pass, which may result in posting those requests to the next 2254 // frame instead 2255 mHandlingLayoutInLayoutRequest = true; 2256 2257 // Process fresh layout requests, then measure and layout 2258 int numValidRequests = validLayoutRequesters.size(); 2259 for (int i = 0; i < numValidRequests; ++i) { 2260 final View view = validLayoutRequesters.get(i); 2261 Log.w("View", "requestLayout() improperly called by " + view + 2262 " during layout: running second layout pass"); 2263 view.requestLayout(); 2264 } 2265 measureHierarchy(host, lp, mView.getContext().getResources(), 2266 desiredWindowWidth, desiredWindowHeight); 2267 mInLayout = true; 2268 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2269 2270 mHandlingLayoutInLayoutRequest = false; 2271 2272 // Check the valid requests again, this time without checking/clearing the 2273 // layout flags, since requests happening during the second pass get noop'd 2274 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2275 if (validLayoutRequesters != null) { 2276 final ArrayList<View> finalRequesters = validLayoutRequesters; 2277 // Post second-pass requests to the next frame 2278 getRunQueue().post(new Runnable() { 2279 @Override 2280 public void run() { 2281 int numValidRequests = finalRequesters.size(); 2282 for (int i = 0; i < numValidRequests; ++i) { 2283 final View view = finalRequesters.get(i); 2284 Log.w("View", "requestLayout() improperly called by " + view + 2285 " during second layout pass: posting in next frame"); 2286 view.requestLayout(); 2287 } 2288 } 2289 }); 2290 } 2291 } 2292 2293 } 2294 } finally { 2295 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2296 } 2297 mInLayout = false; 2298 } 2299 2300 /** 2301 * This method is called during layout when there have been calls to requestLayout() during 2302 * layout. It walks through the list of views that requested layout to determine which ones 2303 * still need it, based on visibility in the hierarchy and whether they have already been 2304 * handled (as is usually the case with ListView children). 2305 * 2306 * @param layoutRequesters The list of views that requested layout during layout 2307 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2308 * If so, the FORCE_LAYOUT flag was not set on requesters. 2309 * @return A list of the actual views that still need to be laid out. 2310 */ 2311 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2312 boolean secondLayoutRequests) { 2313 2314 int numViewsRequestingLayout = layoutRequesters.size(); 2315 ArrayList<View> validLayoutRequesters = null; 2316 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2317 View view = layoutRequesters.get(i); 2318 if (view != null && view.mAttachInfo != null && view.mParent != null && 2319 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2320 View.PFLAG_FORCE_LAYOUT)) { 2321 boolean gone = false; 2322 View parent = view; 2323 // Only trigger new requests for views in a non-GONE hierarchy 2324 while (parent != null) { 2325 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2326 gone = true; 2327 break; 2328 } 2329 if (parent.mParent instanceof View) { 2330 parent = (View) parent.mParent; 2331 } else { 2332 parent = null; 2333 } 2334 } 2335 if (!gone) { 2336 if (validLayoutRequesters == null) { 2337 validLayoutRequesters = new ArrayList<View>(); 2338 } 2339 validLayoutRequesters.add(view); 2340 } 2341 } 2342 } 2343 if (!secondLayoutRequests) { 2344 // If we're checking the layout flags, then we need to clean them up also 2345 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2346 View view = layoutRequesters.get(i); 2347 while (view != null && 2348 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2349 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2350 if (view.mParent instanceof View) { 2351 view = (View) view.mParent; 2352 } else { 2353 view = null; 2354 } 2355 } 2356 } 2357 } 2358 layoutRequesters.clear(); 2359 return validLayoutRequesters; 2360 } 2361 2362 @Override 2363 public void requestTransparentRegion(View child) { 2364 // the test below should not fail unless someone is messing with us 2365 checkThread(); 2366 if (mView == child) { 2367 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2368 // Need to make sure we re-evaluate the window attributes next 2369 // time around, to ensure the window has the correct format. 2370 mWindowAttributesChanged = true; 2371 mWindowAttributesChangesFlag = 0; 2372 requestLayout(); 2373 } 2374 } 2375 2376 /** 2377 * Figures out the measure spec for the root view in a window based on it's 2378 * layout params. 2379 * 2380 * @param windowSize 2381 * The available width or height of the window 2382 * 2383 * @param rootDimension 2384 * The layout params for one dimension (width or height) of the 2385 * window. 2386 * 2387 * @return The measure spec to use to measure the root view. 2388 */ 2389 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2390 int measureSpec; 2391 switch (rootDimension) { 2392 2393 case ViewGroup.LayoutParams.MATCH_PARENT: 2394 // Window can't resize. Force root view to be windowSize. 2395 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2396 break; 2397 case ViewGroup.LayoutParams.WRAP_CONTENT: 2398 // Window can resize. Set max size for root view. 2399 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2400 break; 2401 default: 2402 // Window wants to be an exact size. Force root view to be that size. 2403 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2404 break; 2405 } 2406 return measureSpec; 2407 } 2408 2409 int mHardwareXOffset; 2410 int mHardwareYOffset; 2411 2412 @Override 2413 public void onHardwarePreDraw(DisplayListCanvas canvas) { 2414 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2415 } 2416 2417 @Override 2418 public void onHardwarePostDraw(DisplayListCanvas canvas) { 2419 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2420 } 2421 2422 /** 2423 * @hide 2424 */ 2425 void outputDisplayList(View view) { 2426 view.mRenderNode.output(); 2427 if (mAttachInfo.mHardwareRenderer != null) { 2428 ((ThreadedRenderer)mAttachInfo.mHardwareRenderer).serializeDisplayListTree(); 2429 } 2430 } 2431 2432 /** 2433 * @see #PROPERTY_PROFILE_RENDERING 2434 */ 2435 private void profileRendering(boolean enabled) { 2436 if (mProfileRendering) { 2437 mRenderProfilingEnabled = enabled; 2438 2439 if (mRenderProfiler != null) { 2440 mChoreographer.removeFrameCallback(mRenderProfiler); 2441 } 2442 if (mRenderProfilingEnabled) { 2443 if (mRenderProfiler == null) { 2444 mRenderProfiler = new Choreographer.FrameCallback() { 2445 @Override 2446 public void doFrame(long frameTimeNanos) { 2447 mDirty.set(0, 0, mWidth, mHeight); 2448 scheduleTraversals(); 2449 if (mRenderProfilingEnabled) { 2450 mChoreographer.postFrameCallback(mRenderProfiler); 2451 } 2452 } 2453 }; 2454 } 2455 mChoreographer.postFrameCallback(mRenderProfiler); 2456 } else { 2457 mRenderProfiler = null; 2458 } 2459 } 2460 } 2461 2462 /** 2463 * Called from draw() when DEBUG_FPS is enabled 2464 */ 2465 private void trackFPS() { 2466 // Tracks frames per second drawn. First value in a series of draws may be bogus 2467 // because it down not account for the intervening idle time 2468 long nowTime = System.currentTimeMillis(); 2469 if (mFpsStartTime < 0) { 2470 mFpsStartTime = mFpsPrevTime = nowTime; 2471 mFpsNumFrames = 0; 2472 } else { 2473 ++mFpsNumFrames; 2474 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2475 long frameTime = nowTime - mFpsPrevTime; 2476 long totalTime = nowTime - mFpsStartTime; 2477 Log.v(mTag, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2478 mFpsPrevTime = nowTime; 2479 if (totalTime > 1000) { 2480 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2481 Log.v(mTag, "0x" + thisHash + "\tFPS:\t" + fps); 2482 mFpsStartTime = nowTime; 2483 mFpsNumFrames = 0; 2484 } 2485 } 2486 } 2487 2488 private void performDraw() { 2489 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2490 return; 2491 } 2492 2493 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2494 mFullRedrawNeeded = false; 2495 2496 mIsDrawing = true; 2497 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2498 try { 2499 draw(fullRedrawNeeded); 2500 } finally { 2501 mIsDrawing = false; 2502 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2503 } 2504 2505 // For whatever reason we didn't create a HardwareRenderer, end any 2506 // hardware animations that are now dangling 2507 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2508 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2509 for (int i = 0; i < count; i++) { 2510 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2511 } 2512 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2513 } 2514 2515 if (mReportNextDraw) { 2516 mReportNextDraw = false; 2517 2518 // if we're using multi-thread renderer, wait for the window frame draws 2519 if (mWindowDrawCountDown != null) { 2520 try { 2521 mWindowDrawCountDown.await(); 2522 } catch (InterruptedException e) { 2523 Log.e(mTag, "Window redraw count down interruped!"); 2524 } 2525 mWindowDrawCountDown = null; 2526 } 2527 2528 if (mAttachInfo.mHardwareRenderer != null) { 2529 mAttachInfo.mHardwareRenderer.fence(); 2530 } 2531 2532 if (LOCAL_LOGV) { 2533 Log.v(mTag, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2534 } 2535 if (mSurfaceHolder != null && mSurface.isValid()) { 2536 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2537 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2538 if (callbacks != null) { 2539 for (SurfaceHolder.Callback c : callbacks) { 2540 if (c instanceof SurfaceHolder.Callback2) { 2541 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded(mSurfaceHolder); 2542 } 2543 } 2544 } 2545 } 2546 try { 2547 mWindowSession.finishDrawing(mWindow); 2548 } catch (RemoteException e) { 2549 } 2550 } 2551 } 2552 2553 private void draw(boolean fullRedrawNeeded) { 2554 Surface surface = mSurface; 2555 if (!surface.isValid()) { 2556 return; 2557 } 2558 2559 if (DEBUG_FPS) { 2560 trackFPS(); 2561 } 2562 2563 if (!sFirstDrawComplete) { 2564 synchronized (sFirstDrawHandlers) { 2565 sFirstDrawComplete = true; 2566 final int count = sFirstDrawHandlers.size(); 2567 for (int i = 0; i< count; i++) { 2568 mHandler.post(sFirstDrawHandlers.get(i)); 2569 } 2570 } 2571 } 2572 2573 scrollToRectOrFocus(null, false); 2574 2575 if (mAttachInfo.mViewScrollChanged) { 2576 mAttachInfo.mViewScrollChanged = false; 2577 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2578 } 2579 2580 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2581 final int curScrollY; 2582 if (animating) { 2583 curScrollY = mScroller.getCurrY(); 2584 } else { 2585 curScrollY = mScrollY; 2586 } 2587 if (mCurScrollY != curScrollY) { 2588 mCurScrollY = curScrollY; 2589 fullRedrawNeeded = true; 2590 if (mView instanceof RootViewSurfaceTaker) { 2591 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2592 } 2593 } 2594 2595 final float appScale = mAttachInfo.mApplicationScale; 2596 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2597 2598 int resizeAlpha = 0; 2599 2600 final Rect dirty = mDirty; 2601 if (mSurfaceHolder != null) { 2602 // The app owns the surface, we won't draw. 2603 dirty.setEmpty(); 2604 if (animating && mScroller != null) { 2605 mScroller.abortAnimation(); 2606 } 2607 return; 2608 } 2609 2610 if (fullRedrawNeeded) { 2611 mAttachInfo.mIgnoreDirtyState = true; 2612 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2613 } 2614 2615 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2616 Log.v(mTag, "Draw " + mView + "/" 2617 + mWindowAttributes.getTitle() 2618 + ": dirty={" + dirty.left + "," + dirty.top 2619 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2620 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2621 appScale + ", width=" + mWidth + ", height=" + mHeight); 2622 } 2623 2624 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2625 2626 int xOffset = -mCanvasOffsetX; 2627 int yOffset = -mCanvasOffsetY + curScrollY; 2628 final WindowManager.LayoutParams params = mWindowAttributes; 2629 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2630 if (surfaceInsets != null) { 2631 xOffset -= surfaceInsets.left; 2632 yOffset -= surfaceInsets.top; 2633 2634 // Offset dirty rect for surface insets. 2635 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2636 } 2637 2638 boolean accessibilityFocusDirty = false; 2639 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2640 if (drawable != null) { 2641 final Rect bounds = mAttachInfo.mTmpInvalRect; 2642 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2643 if (!hasFocus) { 2644 bounds.setEmpty(); 2645 } 2646 if (!bounds.equals(drawable.getBounds())) { 2647 accessibilityFocusDirty = true; 2648 } 2649 } 2650 2651 mAttachInfo.mDrawingTime = 2652 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2653 2654 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2655 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2656 // If accessibility focus moved, always invalidate the root. 2657 boolean invalidateRoot = accessibilityFocusDirty; 2658 2659 // Draw with hardware renderer. 2660 mIsAnimating = false; 2661 2662 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2663 mHardwareYOffset = yOffset; 2664 mHardwareXOffset = xOffset; 2665 invalidateRoot = true; 2666 } 2667 2668 if (invalidateRoot) { 2669 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2670 } 2671 2672 dirty.setEmpty(); 2673 2674 // Stage the content drawn size now. It will be transferred to the renderer 2675 // shortly before the draw commands get send to the renderer. 2676 final boolean updated = updateContentDrawBounds(); 2677 2678 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2679 2680 if (updated) { 2681 requestDrawWindow(); 2682 } 2683 } else { 2684 // If we get here with a disabled & requested hardware renderer, something went 2685 // wrong (an invalidate posted right before we destroyed the hardware surface 2686 // for instance) so we should just bail out. Locking the surface with software 2687 // rendering at this point would lock it forever and prevent hardware renderer 2688 // from doing its job when it comes back. 2689 // Before we request a new frame we must however attempt to reinitiliaze the 2690 // hardware renderer if it's in requested state. This would happen after an 2691 // eglTerminate() for instance. 2692 if (mAttachInfo.mHardwareRenderer != null && 2693 !mAttachInfo.mHardwareRenderer.isEnabled() && 2694 mAttachInfo.mHardwareRenderer.isRequested()) { 2695 2696 try { 2697 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2698 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 2699 } catch (OutOfResourcesException e) { 2700 handleOutOfResourcesException(e); 2701 return; 2702 } 2703 2704 mFullRedrawNeeded = true; 2705 scheduleTraversals(); 2706 return; 2707 } 2708 2709 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2710 return; 2711 } 2712 } 2713 } 2714 2715 if (animating) { 2716 mFullRedrawNeeded = true; 2717 scheduleTraversals(); 2718 } 2719 } 2720 2721 /** 2722 * @return true if drawing was successful, false if an error occurred 2723 */ 2724 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2725 boolean scalingRequired, Rect dirty) { 2726 2727 // Draw with software renderer. 2728 final Canvas canvas; 2729 try { 2730 final int left = dirty.left; 2731 final int top = dirty.top; 2732 final int right = dirty.right; 2733 final int bottom = dirty.bottom; 2734 2735 canvas = mSurface.lockCanvas(dirty); 2736 2737 // The dirty rectangle can be modified by Surface.lockCanvas() 2738 //noinspection ConstantConditions 2739 if (left != dirty.left || top != dirty.top || right != dirty.right 2740 || bottom != dirty.bottom) { 2741 attachInfo.mIgnoreDirtyState = true; 2742 } 2743 2744 // TODO: Do this in native 2745 canvas.setDensity(mDensity); 2746 } catch (Surface.OutOfResourcesException e) { 2747 handleOutOfResourcesException(e); 2748 return false; 2749 } catch (IllegalArgumentException e) { 2750 Log.e(mTag, "Could not lock surface", e); 2751 // Don't assume this is due to out of memory, it could be 2752 // something else, and if it is something else then we could 2753 // kill stuff (or ourself) for no reason. 2754 mLayoutRequested = true; // ask wm for a new surface next time. 2755 return false; 2756 } 2757 2758 try { 2759 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2760 Log.v(mTag, "Surface " + surface + " drawing to bitmap w=" 2761 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2762 //canvas.drawARGB(255, 255, 0, 0); 2763 } 2764 2765 // If this bitmap's format includes an alpha channel, we 2766 // need to clear it before drawing so that the child will 2767 // properly re-composite its drawing on a transparent 2768 // background. This automatically respects the clip/dirty region 2769 // or 2770 // If we are applying an offset, we need to clear the area 2771 // where the offset doesn't appear to avoid having garbage 2772 // left in the blank areas. 2773 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2774 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2775 } 2776 2777 dirty.setEmpty(); 2778 mIsAnimating = false; 2779 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2780 2781 if (DEBUG_DRAW) { 2782 Context cxt = mView.getContext(); 2783 Log.i(mTag, "Drawing: package:" + cxt.getPackageName() + 2784 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2785 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2786 } 2787 try { 2788 canvas.translate(-xoff, -yoff); 2789 if (mTranslator != null) { 2790 mTranslator.translateCanvas(canvas); 2791 } 2792 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2793 attachInfo.mSetIgnoreDirtyState = false; 2794 2795 mView.draw(canvas); 2796 2797 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2798 } finally { 2799 if (!attachInfo.mSetIgnoreDirtyState) { 2800 // Only clear the flag if it was not set during the mView.draw() call 2801 attachInfo.mIgnoreDirtyState = false; 2802 } 2803 } 2804 } finally { 2805 try { 2806 surface.unlockCanvasAndPost(canvas); 2807 } catch (IllegalArgumentException e) { 2808 Log.e(mTag, "Could not unlock surface", e); 2809 mLayoutRequested = true; // ask wm for a new surface next time. 2810 //noinspection ReturnInsideFinallyBlock 2811 return false; 2812 } 2813 2814 if (LOCAL_LOGV) { 2815 Log.v(mTag, "Surface " + surface + " unlockCanvasAndPost"); 2816 } 2817 } 2818 return true; 2819 } 2820 2821 /** 2822 * We want to draw a highlight around the current accessibility focused. 2823 * Since adding a style for all possible view is not a viable option we 2824 * have this specialized drawing method. 2825 * 2826 * Note: We are doing this here to be able to draw the highlight for 2827 * virtual views in addition to real ones. 2828 * 2829 * @param canvas The canvas on which to draw. 2830 */ 2831 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2832 final Rect bounds = mAttachInfo.mTmpInvalRect; 2833 if (getAccessibilityFocusedRect(bounds)) { 2834 final Drawable drawable = getAccessibilityFocusedDrawable(); 2835 if (drawable != null) { 2836 drawable.setBounds(bounds); 2837 drawable.draw(canvas); 2838 } 2839 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2840 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2841 } 2842 } 2843 2844 private boolean getAccessibilityFocusedRect(Rect bounds) { 2845 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2846 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2847 return false; 2848 } 2849 2850 final View host = mAccessibilityFocusedHost; 2851 if (host == null || host.mAttachInfo == null) { 2852 return false; 2853 } 2854 2855 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2856 if (provider == null) { 2857 host.getBoundsOnScreen(bounds, true); 2858 } else if (mAccessibilityFocusedVirtualView != null) { 2859 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2860 } else { 2861 return false; 2862 } 2863 2864 // Transform the rect into window-relative coordinates. 2865 final AttachInfo attachInfo = mAttachInfo; 2866 bounds.offset(0, attachInfo.mViewRootImpl.mScrollY); 2867 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2868 if (!bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, 2869 attachInfo.mViewRootImpl.mHeight)) { 2870 // If no intersection, set bounds to empty. 2871 bounds.setEmpty(); 2872 } 2873 return !bounds.isEmpty(); 2874 } 2875 2876 private Drawable getAccessibilityFocusedDrawable() { 2877 // Lazily load the accessibility focus drawable. 2878 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2879 final TypedValue value = new TypedValue(); 2880 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2881 R.attr.accessibilityFocusedDrawable, value, true); 2882 if (resolved) { 2883 mAttachInfo.mAccessibilityFocusDrawable = 2884 mView.mContext.getDrawable(value.resourceId); 2885 } 2886 } 2887 return mAttachInfo.mAccessibilityFocusDrawable; 2888 } 2889 2890 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2891 final Rect ci = mAttachInfo.mContentInsets; 2892 final Rect vi = mAttachInfo.mVisibleInsets; 2893 int scrollY = 0; 2894 boolean handled = false; 2895 2896 if (vi.left > ci.left || vi.top > ci.top 2897 || vi.right > ci.right || vi.bottom > ci.bottom) { 2898 // We'll assume that we aren't going to change the scroll 2899 // offset, since we want to avoid that unless it is actually 2900 // going to make the focus visible... otherwise we scroll 2901 // all over the place. 2902 scrollY = mScrollY; 2903 // We can be called for two different situations: during a draw, 2904 // to update the scroll position if the focus has changed (in which 2905 // case 'rectangle' is null), or in response to a 2906 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2907 // is non-null and we just want to scroll to whatever that 2908 // rectangle is). 2909 final View focus = mView.findFocus(); 2910 if (focus == null) { 2911 return false; 2912 } 2913 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2914 if (focus != lastScrolledFocus) { 2915 // If the focus has changed, then ignore any requests to scroll 2916 // to a rectangle; first we want to make sure the entire focus 2917 // view is visible. 2918 rectangle = null; 2919 } 2920 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Eval scroll: focus=" + focus 2921 + " rectangle=" + rectangle + " ci=" + ci 2922 + " vi=" + vi); 2923 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2924 // Optimization: if the focus hasn't changed since last 2925 // time, and no layout has happened, then just leave things 2926 // as they are. 2927 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Keeping scroll y=" 2928 + mScrollY + " vi=" + vi.toShortString()); 2929 } else { 2930 // We need to determine if the currently focused view is 2931 // within the visible part of the window and, if not, apply 2932 // a pan so it can be seen. 2933 mLastScrolledFocus = new WeakReference<View>(focus); 2934 mScrollMayChange = false; 2935 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Need to scroll?"); 2936 // Try to find the rectangle from the focus view. 2937 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2938 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Root w=" 2939 + mView.getWidth() + " h=" + mView.getHeight() 2940 + " ci=" + ci.toShortString() 2941 + " vi=" + vi.toShortString()); 2942 if (rectangle == null) { 2943 focus.getFocusedRect(mTempRect); 2944 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Focus " + focus 2945 + ": focusRect=" + mTempRect.toShortString()); 2946 if (mView instanceof ViewGroup) { 2947 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2948 focus, mTempRect); 2949 } 2950 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2951 "Focus in window: focusRect=" 2952 + mTempRect.toShortString() 2953 + " visRect=" + mVisRect.toShortString()); 2954 } else { 2955 mTempRect.set(rectangle); 2956 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2957 "Request scroll to rect: " 2958 + mTempRect.toShortString() 2959 + " visRect=" + mVisRect.toShortString()); 2960 } 2961 if (mTempRect.intersect(mVisRect)) { 2962 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2963 "Focus window visible rect: " 2964 + mTempRect.toShortString()); 2965 if (mTempRect.height() > 2966 (mView.getHeight()-vi.top-vi.bottom)) { 2967 // If the focus simply is not going to fit, then 2968 // best is probably just to leave things as-is. 2969 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2970 "Too tall; leaving scrollY=" + scrollY); 2971 } else if ((mTempRect.top-scrollY) < vi.top) { 2972 scrollY -= vi.top - (mTempRect.top-scrollY); 2973 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2974 "Top covered; scrollY=" + scrollY); 2975 } else if ((mTempRect.bottom-scrollY) 2976 > (mView.getHeight()-vi.bottom)) { 2977 scrollY += (mTempRect.bottom-scrollY) 2978 - (mView.getHeight()-vi.bottom); 2979 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2980 "Bottom covered; scrollY=" + scrollY); 2981 } 2982 handled = true; 2983 } 2984 } 2985 } 2986 } 2987 2988 if (scrollY != mScrollY) { 2989 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Pan scroll changed: old=" 2990 + mScrollY + " , new=" + scrollY); 2991 if (!immediate) { 2992 if (mScroller == null) { 2993 mScroller = new Scroller(mView.getContext()); 2994 } 2995 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2996 } else if (mScroller != null) { 2997 mScroller.abortAnimation(); 2998 } 2999 mScrollY = scrollY; 3000 } 3001 3002 return handled; 3003 } 3004 3005 /** 3006 * @hide 3007 */ 3008 public View getAccessibilityFocusedHost() { 3009 return mAccessibilityFocusedHost; 3010 } 3011 3012 /** 3013 * @hide 3014 */ 3015 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 3016 return mAccessibilityFocusedVirtualView; 3017 } 3018 3019 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 3020 // If we have a virtual view with accessibility focus we need 3021 // to clear the focus and invalidate the virtual view bounds. 3022 if (mAccessibilityFocusedVirtualView != null) { 3023 3024 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 3025 View focusHost = mAccessibilityFocusedHost; 3026 3027 // Wipe the state of the current accessibility focus since 3028 // the call into the provider to clear accessibility focus 3029 // will fire an accessibility event which will end up calling 3030 // this method and we want to have clean state when this 3031 // invocation happens. 3032 mAccessibilityFocusedHost = null; 3033 mAccessibilityFocusedVirtualView = null; 3034 3035 // Clear accessibility focus on the host after clearing state since 3036 // this method may be reentrant. 3037 focusHost.clearAccessibilityFocusNoCallbacks(); 3038 3039 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 3040 if (provider != null) { 3041 // Invalidate the area of the cleared accessibility focus. 3042 focusNode.getBoundsInParent(mTempRect); 3043 focusHost.invalidate(mTempRect); 3044 // Clear accessibility focus in the virtual node. 3045 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 3046 focusNode.getSourceNodeId()); 3047 provider.performAction(virtualNodeId, 3048 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 3049 } 3050 focusNode.recycle(); 3051 } 3052 if (mAccessibilityFocusedHost != null) { 3053 // Clear accessibility focus in the view. 3054 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 3055 } 3056 3057 // Set the new focus host and node. 3058 mAccessibilityFocusedHost = view; 3059 mAccessibilityFocusedVirtualView = node; 3060 3061 if (mAttachInfo.mHardwareRenderer != null) { 3062 mAttachInfo.mHardwareRenderer.invalidateRoot(); 3063 } 3064 } 3065 3066 void setPointerCapture(View view) { 3067 if (!mAttachInfo.mHasWindowFocus) { 3068 Log.w(mTag, "Can't set capture if it's not focused."); 3069 return; 3070 } 3071 if (mCapturingView == view) { 3072 return; 3073 } 3074 mCapturingView = view; 3075 InputManager.getInstance().setPointerIconDetached(true); 3076 } 3077 3078 void releasePointerCapture(View view) { 3079 if (mCapturingView != view || mCapturingView == null) { 3080 return; 3081 } 3082 3083 mCapturingView = null; 3084 InputManager.getInstance().setPointerIconDetached(false); 3085 } 3086 3087 boolean hasPointerCapture(View view) { 3088 return view != null && mCapturingView == view; 3089 } 3090 3091 @Override 3092 public void requestChildFocus(View child, View focused) { 3093 if (DEBUG_INPUT_RESIZE) { 3094 Log.v(mTag, "Request child focus: focus now " + focused); 3095 } 3096 checkThread(); 3097 scheduleTraversals(); 3098 } 3099 3100 @Override 3101 public void clearChildFocus(View child) { 3102 if (DEBUG_INPUT_RESIZE) { 3103 Log.v(mTag, "Clearing child focus"); 3104 } 3105 checkThread(); 3106 scheduleTraversals(); 3107 } 3108 3109 @Override 3110 public ViewParent getParentForAccessibility() { 3111 return null; 3112 } 3113 3114 @Override 3115 public void focusableViewAvailable(View v) { 3116 checkThread(); 3117 if (mView != null) { 3118 if (!mView.hasFocus()) { 3119 v.requestFocus(); 3120 } else { 3121 // the one case where will transfer focus away from the current one 3122 // is if the current view is a view group that prefers to give focus 3123 // to its children first AND the view is a descendant of it. 3124 View focused = mView.findFocus(); 3125 if (focused instanceof ViewGroup) { 3126 ViewGroup group = (ViewGroup) focused; 3127 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3128 && isViewDescendantOf(v, focused)) { 3129 v.requestFocus(); 3130 } 3131 } 3132 } 3133 } 3134 } 3135 3136 @Override 3137 public void recomputeViewAttributes(View child) { 3138 checkThread(); 3139 if (mView == child) { 3140 mAttachInfo.mRecomputeGlobalAttributes = true; 3141 if (!mWillDrawSoon) { 3142 scheduleTraversals(); 3143 } 3144 } 3145 } 3146 3147 void dispatchDetachedFromWindow() { 3148 if (mView != null && mView.mAttachInfo != null) { 3149 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 3150 mView.dispatchDetachedFromWindow(); 3151 } 3152 3153 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 3154 mAccessibilityManager.removeAccessibilityStateChangeListener( 3155 mAccessibilityInteractionConnectionManager); 3156 mAccessibilityManager.removeHighTextContrastStateChangeListener( 3157 mHighContrastTextManager); 3158 removeSendWindowContentChangedCallback(); 3159 3160 destroyHardwareRenderer(); 3161 3162 setAccessibilityFocus(null, null); 3163 3164 mView.assignParent(null); 3165 mView = null; 3166 mAttachInfo.mRootView = null; 3167 3168 if (mCapturingView != null) { 3169 releasePointerCapture(mCapturingView); 3170 } 3171 3172 mSurface.release(); 3173 3174 if (mInputQueueCallback != null && mInputQueue != null) { 3175 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 3176 mInputQueue.dispose(); 3177 mInputQueueCallback = null; 3178 mInputQueue = null; 3179 } 3180 if (mInputEventReceiver != null) { 3181 mInputEventReceiver.dispose(); 3182 mInputEventReceiver = null; 3183 } 3184 try { 3185 mWindowSession.remove(mWindow); 3186 } catch (RemoteException e) { 3187 } 3188 3189 // Dispose the input channel after removing the window so the Window Manager 3190 // doesn't interpret the input channel being closed as an abnormal termination. 3191 if (mInputChannel != null) { 3192 mInputChannel.dispose(); 3193 mInputChannel = null; 3194 } 3195 3196 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3197 3198 unscheduleTraversals(); 3199 } 3200 3201 void updateConfiguration(Configuration config, boolean force) { 3202 if (DEBUG_CONFIGURATION) Log.v(mTag, 3203 "Applying new config to window " 3204 + mWindowAttributes.getTitle() 3205 + ": " + config); 3206 3207 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3208 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3209 config = new Configuration(config); 3210 ci.applyToConfiguration(mNoncompatDensity, config); 3211 } 3212 3213 synchronized (sConfigCallbacks) { 3214 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3215 sConfigCallbacks.get(i).onConfigurationChanged(config); 3216 } 3217 } 3218 if (mView != null) { 3219 // At this point the resources have been updated to 3220 // have the most recent config, whatever that is. Use 3221 // the one in them which may be newer. 3222 config = mView.getResources().getConfiguration(); 3223 if (force || mLastConfiguration.diff(config) != 0) { 3224 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3225 final int currentLayoutDirection = config.getLayoutDirection(); 3226 mLastConfiguration.setTo(config); 3227 if (lastLayoutDirection != currentLayoutDirection && 3228 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3229 mView.setLayoutDirection(currentLayoutDirection); 3230 } 3231 mView.dispatchConfigurationChanged(config); 3232 } 3233 } 3234 } 3235 3236 /** 3237 * Return true if child is an ancestor of parent, (or equal to the parent). 3238 */ 3239 public static boolean isViewDescendantOf(View child, View parent) { 3240 if (child == parent) { 3241 return true; 3242 } 3243 3244 final ViewParent theParent = child.getParent(); 3245 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3246 } 3247 3248 private static void forceLayout(View view) { 3249 view.forceLayout(); 3250 if (view instanceof ViewGroup) { 3251 ViewGroup group = (ViewGroup) view; 3252 final int count = group.getChildCount(); 3253 for (int i = 0; i < count; i++) { 3254 forceLayout(group.getChildAt(i)); 3255 } 3256 } 3257 } 3258 3259 private final static int MSG_INVALIDATE = 1; 3260 private final static int MSG_INVALIDATE_RECT = 2; 3261 private final static int MSG_DIE = 3; 3262 private final static int MSG_RESIZED = 4; 3263 private final static int MSG_RESIZED_REPORT = 5; 3264 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3265 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3266 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3267 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3268 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3269 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 3270 private final static int MSG_CHECK_FOCUS = 13; 3271 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3272 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3273 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3274 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3275 private final static int MSG_UPDATE_CONFIGURATION = 18; 3276 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3277 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3278 private final static int MSG_INVALIDATE_WORLD = 22; 3279 private final static int MSG_WINDOW_MOVED = 23; 3280 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 24; 3281 private final static int MSG_DISPATCH_WINDOW_SHOWN = 25; 3282 private final static int MSG_REQUEST_KEYBOARD_SHORTCUTS = 26; 3283 private final static int MSG_UPDATE_POINTER_ICON = 27; 3284 3285 final class ViewRootHandler extends Handler { 3286 @Override 3287 public String getMessageName(Message message) { 3288 switch (message.what) { 3289 case MSG_INVALIDATE: 3290 return "MSG_INVALIDATE"; 3291 case MSG_INVALIDATE_RECT: 3292 return "MSG_INVALIDATE_RECT"; 3293 case MSG_DIE: 3294 return "MSG_DIE"; 3295 case MSG_RESIZED: 3296 return "MSG_RESIZED"; 3297 case MSG_RESIZED_REPORT: 3298 return "MSG_RESIZED_REPORT"; 3299 case MSG_WINDOW_FOCUS_CHANGED: 3300 return "MSG_WINDOW_FOCUS_CHANGED"; 3301 case MSG_DISPATCH_INPUT_EVENT: 3302 return "MSG_DISPATCH_INPUT_EVENT"; 3303 case MSG_DISPATCH_APP_VISIBILITY: 3304 return "MSG_DISPATCH_APP_VISIBILITY"; 3305 case MSG_DISPATCH_GET_NEW_SURFACE: 3306 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3307 case MSG_DISPATCH_KEY_FROM_IME: 3308 return "MSG_DISPATCH_KEY_FROM_IME"; 3309 case MSG_FINISH_INPUT_CONNECTION: 3310 return "MSG_FINISH_INPUT_CONNECTION"; 3311 case MSG_CHECK_FOCUS: 3312 return "MSG_CHECK_FOCUS"; 3313 case MSG_CLOSE_SYSTEM_DIALOGS: 3314 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3315 case MSG_DISPATCH_DRAG_EVENT: 3316 return "MSG_DISPATCH_DRAG_EVENT"; 3317 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3318 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3319 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3320 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3321 case MSG_UPDATE_CONFIGURATION: 3322 return "MSG_UPDATE_CONFIGURATION"; 3323 case MSG_PROCESS_INPUT_EVENTS: 3324 return "MSG_PROCESS_INPUT_EVENTS"; 3325 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3326 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3327 case MSG_WINDOW_MOVED: 3328 return "MSG_WINDOW_MOVED"; 3329 case MSG_SYNTHESIZE_INPUT_EVENT: 3330 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3331 case MSG_DISPATCH_WINDOW_SHOWN: 3332 return "MSG_DISPATCH_WINDOW_SHOWN"; 3333 case MSG_UPDATE_POINTER_ICON: 3334 return "MSG_UPDATE_POINTER_ICON"; 3335 } 3336 return super.getMessageName(message); 3337 } 3338 3339 @Override 3340 public void handleMessage(Message msg) { 3341 switch (msg.what) { 3342 case MSG_INVALIDATE: 3343 ((View) msg.obj).invalidate(); 3344 break; 3345 case MSG_INVALIDATE_RECT: 3346 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3347 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3348 info.recycle(); 3349 break; 3350 case MSG_PROCESS_INPUT_EVENTS: 3351 mProcessInputEventsScheduled = false; 3352 doProcessInputEvents(); 3353 break; 3354 case MSG_DISPATCH_APP_VISIBILITY: 3355 handleAppVisibility(msg.arg1 != 0); 3356 break; 3357 case MSG_DISPATCH_GET_NEW_SURFACE: 3358 handleGetNewSurface(); 3359 break; 3360 case MSG_RESIZED: { 3361 // Recycled in the fall through... 3362 SomeArgs args = (SomeArgs) msg.obj; 3363 if (mWinFrame.equals(args.arg1) 3364 && mPendingOverscanInsets.equals(args.arg5) 3365 && mPendingContentInsets.equals(args.arg2) 3366 && mPendingStableInsets.equals(args.arg6) 3367 && mPendingVisibleInsets.equals(args.arg3) 3368 && mPendingOutsets.equals(args.arg7) 3369 && mPendingBackDropFrame.equals(args.arg8) 3370 && args.arg4 == null 3371 && args.argi1 == 0) { 3372 break; 3373 } 3374 } // fall through... 3375 case MSG_RESIZED_REPORT: 3376 if (mAdded) { 3377 SomeArgs args = (SomeArgs) msg.obj; 3378 3379 Configuration config = (Configuration) args.arg4; 3380 if (config != null) { 3381 updateConfiguration(config, false); 3382 } 3383 3384 mWinFrame.set((Rect) args.arg1); 3385 mPendingOverscanInsets.set((Rect) args.arg5); 3386 mPendingContentInsets.set((Rect) args.arg2); 3387 mPendingStableInsets.set((Rect) args.arg6); 3388 mPendingVisibleInsets.set((Rect) args.arg3); 3389 mPendingOutsets.set((Rect) args.arg7); 3390 mPendingBackDropFrame.set((Rect) args.arg8); 3391 mForceNextWindowRelayout = args.argi1 != 0; 3392 3393 args.recycle(); 3394 3395 if (msg.what == MSG_RESIZED_REPORT) { 3396 mReportNextDraw = true; 3397 } 3398 3399 if (mView != null) { 3400 forceLayout(mView); 3401 } 3402 3403 requestLayout(); 3404 } 3405 break; 3406 case MSG_WINDOW_MOVED: 3407 if (mAdded) { 3408 final int w = mWinFrame.width(); 3409 final int h = mWinFrame.height(); 3410 final int l = msg.arg1; 3411 final int t = msg.arg2; 3412 mWinFrame.left = l; 3413 mWinFrame.right = l + w; 3414 mWinFrame.top = t; 3415 mWinFrame.bottom = t + h; 3416 3417 mPendingBackDropFrame.set(mWinFrame); 3418 3419 // Suppress layouts during resizing - a correct layout will happen when resizing 3420 // is done, and this just increases system load. 3421 boolean isDockedDivider = mWindowAttributes.type == TYPE_DOCK_DIVIDER; 3422 boolean suppress = (mDragResizing && mResizeMode == RESIZE_MODE_DOCKED_DIVIDER) 3423 || isDockedDivider; 3424 if (!suppress) { 3425 if (mView != null) { 3426 forceLayout(mView); 3427 } 3428 requestLayout(); 3429 } else { 3430 maybeHandleWindowMove(mWinFrame); 3431 } 3432 } 3433 break; 3434 case MSG_WINDOW_FOCUS_CHANGED: { 3435 if (mAdded) { 3436 boolean hasWindowFocus = msg.arg1 != 0; 3437 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3438 3439 profileRendering(hasWindowFocus); 3440 3441 if (hasWindowFocus) { 3442 boolean inTouchMode = msg.arg2 != 0; 3443 ensureTouchModeLocally(inTouchMode); 3444 3445 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3446 mFullRedrawNeeded = true; 3447 try { 3448 final WindowManager.LayoutParams lp = mWindowAttributes; 3449 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3450 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3451 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 3452 } catch (OutOfResourcesException e) { 3453 Log.e(mTag, "OutOfResourcesException locking surface", e); 3454 try { 3455 if (!mWindowSession.outOfMemory(mWindow)) { 3456 Slog.w(mTag, "No processes killed for memory; killing self"); 3457 Process.killProcess(Process.myPid()); 3458 } 3459 } catch (RemoteException ex) { 3460 } 3461 // Retry in a bit. 3462 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3463 return; 3464 } 3465 } 3466 } 3467 3468 mLastWasImTarget = WindowManager.LayoutParams 3469 .mayUseInputMethod(mWindowAttributes.flags); 3470 3471 InputMethodManager imm = InputMethodManager.peekInstance(); 3472 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3473 imm.onPreWindowFocus(mView, hasWindowFocus); 3474 } 3475 if (mView != null) { 3476 mAttachInfo.mKeyDispatchState.reset(); 3477 mView.dispatchWindowFocusChanged(hasWindowFocus); 3478 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3479 } 3480 3481 // Note: must be done after the focus change callbacks, 3482 // so all of the view state is set up correctly. 3483 if (hasWindowFocus) { 3484 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3485 imm.onPostWindowFocus(mView, mView.findFocus(), 3486 mWindowAttributes.softInputMode, 3487 !mHasHadWindowFocus, mWindowAttributes.flags); 3488 } 3489 // Clear the forward bit. We can just do this directly, since 3490 // the window manager doesn't care about it. 3491 mWindowAttributes.softInputMode &= 3492 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3493 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3494 .softInputMode &= 3495 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3496 mHasHadWindowFocus = true; 3497 } else if (mCapturingView != null) { 3498 releasePointerCapture(mCapturingView); 3499 } 3500 } 3501 } break; 3502 case MSG_DIE: 3503 doDie(); 3504 break; 3505 case MSG_DISPATCH_INPUT_EVENT: { 3506 SomeArgs args = (SomeArgs)msg.obj; 3507 InputEvent event = (InputEvent)args.arg1; 3508 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3509 enqueueInputEvent(event, receiver, 0, true); 3510 args.recycle(); 3511 } break; 3512 case MSG_SYNTHESIZE_INPUT_EVENT: { 3513 InputEvent event = (InputEvent)msg.obj; 3514 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3515 } break; 3516 case MSG_DISPATCH_KEY_FROM_IME: { 3517 if (LOCAL_LOGV) Log.v( 3518 TAG, "Dispatching key " 3519 + msg.obj + " from IME to " + mView); 3520 KeyEvent event = (KeyEvent)msg.obj; 3521 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3522 // The IME is trying to say this event is from the 3523 // system! Bad bad bad! 3524 //noinspection UnusedAssignment 3525 event = KeyEvent.changeFlags(event, event.getFlags() & 3526 ~KeyEvent.FLAG_FROM_SYSTEM); 3527 } 3528 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3529 } break; 3530 case MSG_FINISH_INPUT_CONNECTION: { 3531 InputMethodManager imm = InputMethodManager.peekInstance(); 3532 if (imm != null) { 3533 imm.reportFinishInputConnection((InputConnection)msg.obj); 3534 } 3535 } break; 3536 case MSG_CHECK_FOCUS: { 3537 InputMethodManager imm = InputMethodManager.peekInstance(); 3538 if (imm != null) { 3539 imm.checkFocus(); 3540 } 3541 } break; 3542 case MSG_CLOSE_SYSTEM_DIALOGS: { 3543 if (mView != null) { 3544 mView.onCloseSystemDialogs((String)msg.obj); 3545 } 3546 } break; 3547 case MSG_DISPATCH_DRAG_EVENT: 3548 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3549 DragEvent event = (DragEvent)msg.obj; 3550 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3551 handleDragEvent(event); 3552 } break; 3553 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3554 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3555 } break; 3556 case MSG_UPDATE_CONFIGURATION: { 3557 Configuration config = (Configuration)msg.obj; 3558 if (config.isOtherSeqNewer(mLastConfiguration)) { 3559 config = mLastConfiguration; 3560 } 3561 updateConfiguration(config, false); 3562 } break; 3563 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3564 setAccessibilityFocus(null, null); 3565 } break; 3566 case MSG_INVALIDATE_WORLD: { 3567 if (mView != null) { 3568 invalidateWorld(mView); 3569 } 3570 } break; 3571 case MSG_DISPATCH_WINDOW_SHOWN: { 3572 handleDispatchWindowShown(); 3573 } break; 3574 case MSG_REQUEST_KEYBOARD_SHORTCUTS: { 3575 IResultReceiver receiver = (IResultReceiver) msg.obj; 3576 handleRequestKeyboardShortcuts(receiver); 3577 } break; 3578 case MSG_UPDATE_POINTER_ICON: { 3579 MotionEvent event = (MotionEvent) msg.obj; 3580 resetPointerIcon(event); 3581 } break; 3582 } 3583 } 3584 } 3585 3586 final ViewRootHandler mHandler = new ViewRootHandler(); 3587 3588 /** 3589 * Something in the current window tells us we need to change the touch mode. For 3590 * example, we are not in touch mode, and the user touches the screen. 3591 * 3592 * If the touch mode has changed, tell the window manager, and handle it locally. 3593 * 3594 * @param inTouchMode Whether we want to be in touch mode. 3595 * @return True if the touch mode changed and focus changed was changed as a result 3596 */ 3597 boolean ensureTouchMode(boolean inTouchMode) { 3598 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3599 + "touch mode is " + mAttachInfo.mInTouchMode); 3600 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3601 3602 // tell the window manager 3603 try { 3604 mWindowSession.setInTouchMode(inTouchMode); 3605 } catch (RemoteException e) { 3606 throw new RuntimeException(e); 3607 } 3608 3609 // handle the change 3610 return ensureTouchModeLocally(inTouchMode); 3611 } 3612 3613 /** 3614 * Ensure that the touch mode for this window is set, and if it is changing, 3615 * take the appropriate action. 3616 * @param inTouchMode Whether we want to be in touch mode. 3617 * @return True if the touch mode changed and focus changed was changed as a result 3618 */ 3619 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3620 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3621 + "touch mode is " + mAttachInfo.mInTouchMode); 3622 3623 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3624 3625 mAttachInfo.mInTouchMode = inTouchMode; 3626 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3627 3628 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3629 } 3630 3631 private boolean enterTouchMode() { 3632 if (mView != null && mView.hasFocus()) { 3633 // note: not relying on mFocusedView here because this could 3634 // be when the window is first being added, and mFocused isn't 3635 // set yet. 3636 final View focused = mView.findFocus(); 3637 if (focused != null && !focused.isFocusableInTouchMode()) { 3638 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3639 if (ancestorToTakeFocus != null) { 3640 // there is an ancestor that wants focus after its 3641 // descendants that is focusable in touch mode.. give it 3642 // focus 3643 return ancestorToTakeFocus.requestFocus(); 3644 } else { 3645 // There's nothing to focus. Clear and propagate through the 3646 // hierarchy, but don't attempt to place new focus. 3647 focused.clearFocusInternal(null, true, false); 3648 return true; 3649 } 3650 } 3651 } 3652 return false; 3653 } 3654 3655 /** 3656 * Find an ancestor of focused that wants focus after its descendants and is 3657 * focusable in touch mode. 3658 * @param focused The currently focused view. 3659 * @return An appropriate view, or null if no such view exists. 3660 */ 3661 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3662 ViewParent parent = focused.getParent(); 3663 while (parent instanceof ViewGroup) { 3664 final ViewGroup vgParent = (ViewGroup) parent; 3665 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3666 && vgParent.isFocusableInTouchMode()) { 3667 return vgParent; 3668 } 3669 if (vgParent.isRootNamespace()) { 3670 return null; 3671 } else { 3672 parent = vgParent.getParent(); 3673 } 3674 } 3675 return null; 3676 } 3677 3678 private boolean leaveTouchMode() { 3679 if (mView != null) { 3680 if (mView.hasFocus()) { 3681 View focusedView = mView.findFocus(); 3682 if (!(focusedView instanceof ViewGroup)) { 3683 // some view has focus, let it keep it 3684 return false; 3685 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3686 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3687 // some view group has focus, and doesn't prefer its children 3688 // over itself for focus, so let them keep it. 3689 return false; 3690 } 3691 } 3692 3693 // find the best view to give focus to in this brave new non-touch-mode 3694 // world 3695 final View focused = focusSearch(null, View.FOCUS_DOWN); 3696 if (focused != null) { 3697 return focused.requestFocus(View.FOCUS_DOWN); 3698 } 3699 } 3700 return false; 3701 } 3702 3703 /** 3704 * Base class for implementing a stage in the chain of responsibility 3705 * for processing input events. 3706 * <p> 3707 * Events are delivered to the stage by the {@link #deliver} method. The stage 3708 * then has the choice of finishing the event or forwarding it to the next stage. 3709 * </p> 3710 */ 3711 abstract class InputStage { 3712 private final InputStage mNext; 3713 3714 protected static final int FORWARD = 0; 3715 protected static final int FINISH_HANDLED = 1; 3716 protected static final int FINISH_NOT_HANDLED = 2; 3717 3718 /** 3719 * Creates an input stage. 3720 * @param next The next stage to which events should be forwarded. 3721 */ 3722 public InputStage(InputStage next) { 3723 mNext = next; 3724 } 3725 3726 /** 3727 * Delivers an event to be processed. 3728 */ 3729 public final void deliver(QueuedInputEvent q) { 3730 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3731 forward(q); 3732 } else if (shouldDropInputEvent(q)) { 3733 finish(q, false); 3734 } else { 3735 apply(q, onProcess(q)); 3736 } 3737 } 3738 3739 /** 3740 * Marks the the input event as finished then forwards it to the next stage. 3741 */ 3742 protected void finish(QueuedInputEvent q, boolean handled) { 3743 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3744 if (handled) { 3745 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3746 } 3747 forward(q); 3748 } 3749 3750 /** 3751 * Forwards the event to the next stage. 3752 */ 3753 protected void forward(QueuedInputEvent q) { 3754 onDeliverToNext(q); 3755 } 3756 3757 /** 3758 * Applies a result code from {@link #onProcess} to the specified event. 3759 */ 3760 protected void apply(QueuedInputEvent q, int result) { 3761 if (result == FORWARD) { 3762 forward(q); 3763 } else if (result == FINISH_HANDLED) { 3764 finish(q, true); 3765 } else if (result == FINISH_NOT_HANDLED) { 3766 finish(q, false); 3767 } else { 3768 throw new IllegalArgumentException("Invalid result: " + result); 3769 } 3770 } 3771 3772 /** 3773 * Called when an event is ready to be processed. 3774 * @return A result code indicating how the event was handled. 3775 */ 3776 protected int onProcess(QueuedInputEvent q) { 3777 return FORWARD; 3778 } 3779 3780 /** 3781 * Called when an event is being delivered to the next stage. 3782 */ 3783 protected void onDeliverToNext(QueuedInputEvent q) { 3784 if (DEBUG_INPUT_STAGES) { 3785 Log.v(mTag, "Done with " + getClass().getSimpleName() + ". " + q); 3786 } 3787 if (mNext != null) { 3788 mNext.deliver(q); 3789 } else { 3790 finishInputEvent(q); 3791 } 3792 } 3793 3794 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3795 if (mView == null || !mAdded) { 3796 Slog.w(mTag, "Dropping event due to root view being removed: " + q.mEvent); 3797 return true; 3798 } else if ((!mAttachInfo.mHasWindowFocus 3799 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) || mStopped 3800 || (mIsAmbientMode && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_BUTTON)) 3801 || (mPausedForTransition && !isBack(q.mEvent))) { 3802 // This is a focus event and the window doesn't currently have input focus or 3803 // has stopped. This could be an event that came back from the previous stage 3804 // but the window has lost focus or stopped in the meantime. 3805 if (isTerminalInputEvent(q.mEvent)) { 3806 // Don't drop terminal input events, however mark them as canceled. 3807 q.mEvent.cancel(); 3808 Slog.w(mTag, "Cancelling event due to no window focus: " + q.mEvent); 3809 return false; 3810 } 3811 3812 // Drop non-terminal input events. 3813 Slog.w(mTag, "Dropping event due to no window focus: " + q.mEvent); 3814 return true; 3815 } 3816 return false; 3817 } 3818 3819 void dump(String prefix, PrintWriter writer) { 3820 if (mNext != null) { 3821 mNext.dump(prefix, writer); 3822 } 3823 } 3824 3825 private boolean isBack(InputEvent event) { 3826 if (event instanceof KeyEvent) { 3827 return ((KeyEvent) event).getKeyCode() == KeyEvent.KEYCODE_BACK; 3828 } else { 3829 return false; 3830 } 3831 } 3832 } 3833 3834 /** 3835 * Base class for implementing an input pipeline stage that supports 3836 * asynchronous and out-of-order processing of input events. 3837 * <p> 3838 * In addition to what a normal input stage can do, an asynchronous 3839 * input stage may also defer an input event that has been delivered to it 3840 * and finish or forward it later. 3841 * </p> 3842 */ 3843 abstract class AsyncInputStage extends InputStage { 3844 private final String mTraceCounter; 3845 3846 private QueuedInputEvent mQueueHead; 3847 private QueuedInputEvent mQueueTail; 3848 private int mQueueLength; 3849 3850 protected static final int DEFER = 3; 3851 3852 /** 3853 * Creates an asynchronous input stage. 3854 * @param next The next stage to which events should be forwarded. 3855 * @param traceCounter The name of a counter to record the size of 3856 * the queue of pending events. 3857 */ 3858 public AsyncInputStage(InputStage next, String traceCounter) { 3859 super(next); 3860 mTraceCounter = traceCounter; 3861 } 3862 3863 /** 3864 * Marks the event as deferred, which is to say that it will be handled 3865 * asynchronously. The caller is responsible for calling {@link #forward} 3866 * or {@link #finish} later when it is done handling the event. 3867 */ 3868 protected void defer(QueuedInputEvent q) { 3869 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3870 enqueue(q); 3871 } 3872 3873 @Override 3874 protected void forward(QueuedInputEvent q) { 3875 // Clear the deferred flag. 3876 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3877 3878 // Fast path if the queue is empty. 3879 QueuedInputEvent curr = mQueueHead; 3880 if (curr == null) { 3881 super.forward(q); 3882 return; 3883 } 3884 3885 // Determine whether the event must be serialized behind any others 3886 // before it can be delivered to the next stage. This is done because 3887 // deferred events might be handled out of order by the stage. 3888 final int deviceId = q.mEvent.getDeviceId(); 3889 QueuedInputEvent prev = null; 3890 boolean blocked = false; 3891 while (curr != null && curr != q) { 3892 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3893 blocked = true; 3894 } 3895 prev = curr; 3896 curr = curr.mNext; 3897 } 3898 3899 // If the event is blocked, then leave it in the queue to be delivered later. 3900 // Note that the event might not yet be in the queue if it was not previously 3901 // deferred so we will enqueue it if needed. 3902 if (blocked) { 3903 if (curr == null) { 3904 enqueue(q); 3905 } 3906 return; 3907 } 3908 3909 // The event is not blocked. Deliver it immediately. 3910 if (curr != null) { 3911 curr = curr.mNext; 3912 dequeue(q, prev); 3913 } 3914 super.forward(q); 3915 3916 // Dequeuing this event may have unblocked successors. Deliver them. 3917 while (curr != null) { 3918 if (deviceId == curr.mEvent.getDeviceId()) { 3919 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3920 break; 3921 } 3922 QueuedInputEvent next = curr.mNext; 3923 dequeue(curr, prev); 3924 super.forward(curr); 3925 curr = next; 3926 } else { 3927 prev = curr; 3928 curr = curr.mNext; 3929 } 3930 } 3931 } 3932 3933 @Override 3934 protected void apply(QueuedInputEvent q, int result) { 3935 if (result == DEFER) { 3936 defer(q); 3937 } else { 3938 super.apply(q, result); 3939 } 3940 } 3941 3942 private void enqueue(QueuedInputEvent q) { 3943 if (mQueueTail == null) { 3944 mQueueHead = q; 3945 mQueueTail = q; 3946 } else { 3947 mQueueTail.mNext = q; 3948 mQueueTail = q; 3949 } 3950 3951 mQueueLength += 1; 3952 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3953 } 3954 3955 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3956 if (prev == null) { 3957 mQueueHead = q.mNext; 3958 } else { 3959 prev.mNext = q.mNext; 3960 } 3961 if (mQueueTail == q) { 3962 mQueueTail = prev; 3963 } 3964 q.mNext = null; 3965 3966 mQueueLength -= 1; 3967 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3968 } 3969 3970 @Override 3971 void dump(String prefix, PrintWriter writer) { 3972 writer.print(prefix); 3973 writer.print(getClass().getName()); 3974 writer.print(": mQueueLength="); 3975 writer.println(mQueueLength); 3976 3977 super.dump(prefix, writer); 3978 } 3979 } 3980 3981 /** 3982 * Delivers pre-ime input events to a native activity. 3983 * Does not support pointer events. 3984 */ 3985 final class NativePreImeInputStage extends AsyncInputStage 3986 implements InputQueue.FinishedInputEventCallback { 3987 public NativePreImeInputStage(InputStage next, String traceCounter) { 3988 super(next, traceCounter); 3989 } 3990 3991 @Override 3992 protected int onProcess(QueuedInputEvent q) { 3993 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3994 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3995 return DEFER; 3996 } 3997 return FORWARD; 3998 } 3999 4000 @Override 4001 public void onFinishedInputEvent(Object token, boolean handled) { 4002 QueuedInputEvent q = (QueuedInputEvent)token; 4003 if (handled) { 4004 finish(q, true); 4005 return; 4006 } 4007 forward(q); 4008 } 4009 } 4010 4011 /** 4012 * Delivers pre-ime input events to the view hierarchy. 4013 * Does not support pointer events. 4014 */ 4015 final class ViewPreImeInputStage extends InputStage { 4016 public ViewPreImeInputStage(InputStage next) { 4017 super(next); 4018 } 4019 4020 @Override 4021 protected int onProcess(QueuedInputEvent q) { 4022 if (q.mEvent instanceof KeyEvent) { 4023 return processKeyEvent(q); 4024 } 4025 return FORWARD; 4026 } 4027 4028 private int processKeyEvent(QueuedInputEvent q) { 4029 final KeyEvent event = (KeyEvent)q.mEvent; 4030 if (mView.dispatchKeyEventPreIme(event)) { 4031 return FINISH_HANDLED; 4032 } 4033 return FORWARD; 4034 } 4035 } 4036 4037 /** 4038 * Delivers input events to the ime. 4039 * Does not support pointer events. 4040 */ 4041 final class ImeInputStage extends AsyncInputStage 4042 implements InputMethodManager.FinishedInputEventCallback { 4043 public ImeInputStage(InputStage next, String traceCounter) { 4044 super(next, traceCounter); 4045 } 4046 4047 @Override 4048 protected int onProcess(QueuedInputEvent q) { 4049 if (mLastWasImTarget && !isInLocalFocusMode()) { 4050 InputMethodManager imm = InputMethodManager.peekInstance(); 4051 if (imm != null) { 4052 final InputEvent event = q.mEvent; 4053 if (DEBUG_IMF) Log.v(mTag, "Sending input event to IME: " + event); 4054 int result = imm.dispatchInputEvent(event, q, this, mHandler); 4055 if (result == InputMethodManager.DISPATCH_HANDLED) { 4056 return FINISH_HANDLED; 4057 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 4058 // The IME could not handle it, so skip along to the next InputStage 4059 return FORWARD; 4060 } else { 4061 return DEFER; // callback will be invoked later 4062 } 4063 } 4064 } 4065 return FORWARD; 4066 } 4067 4068 @Override 4069 public void onFinishedInputEvent(Object token, boolean handled) { 4070 QueuedInputEvent q = (QueuedInputEvent)token; 4071 if (handled) { 4072 finish(q, true); 4073 return; 4074 } 4075 forward(q); 4076 } 4077 } 4078 4079 /** 4080 * Performs early processing of post-ime input events. 4081 */ 4082 final class EarlyPostImeInputStage extends InputStage { 4083 public EarlyPostImeInputStage(InputStage next) { 4084 super(next); 4085 } 4086 4087 @Override 4088 protected int onProcess(QueuedInputEvent q) { 4089 if (q.mEvent instanceof KeyEvent) { 4090 return processKeyEvent(q); 4091 } else { 4092 final int source = q.mEvent.getSource(); 4093 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4094 return processPointerEvent(q); 4095 } 4096 } 4097 return FORWARD; 4098 } 4099 4100 private int processKeyEvent(QueuedInputEvent q) { 4101 final KeyEvent event = (KeyEvent)q.mEvent; 4102 4103 // If the key's purpose is to exit touch mode then we consume it 4104 // and consider it handled. 4105 if (checkForLeavingTouchModeAndConsume(event)) { 4106 return FINISH_HANDLED; 4107 } 4108 4109 // Make sure the fallback event policy sees all keys that will be 4110 // delivered to the view hierarchy. 4111 mFallbackEventHandler.preDispatchKeyEvent(event); 4112 return FORWARD; 4113 } 4114 4115 private int processPointerEvent(QueuedInputEvent q) { 4116 final MotionEvent event = (MotionEvent)q.mEvent; 4117 4118 // Translate the pointer event for compatibility, if needed. 4119 if (mTranslator != null) { 4120 mTranslator.translateEventInScreenToAppWindow(event); 4121 } 4122 4123 // Enter touch mode on down or scroll. 4124 final int action = event.getAction(); 4125 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 4126 ensureTouchMode(true); 4127 } 4128 4129 // Offset the scroll position. 4130 if (mCurScrollY != 0) { 4131 event.offsetLocation(0, mCurScrollY); 4132 } 4133 4134 // Remember the touch position for possible drag-initiation. 4135 if (event.isTouchEvent()) { 4136 mLastTouchPoint.x = event.getRawX(); 4137 mLastTouchPoint.y = event.getRawY(); 4138 mLastTouchSource = event.getSource(); 4139 } 4140 return FORWARD; 4141 } 4142 } 4143 4144 /** 4145 * Delivers post-ime input events to a native activity. 4146 */ 4147 final class NativePostImeInputStage extends AsyncInputStage 4148 implements InputQueue.FinishedInputEventCallback { 4149 public NativePostImeInputStage(InputStage next, String traceCounter) { 4150 super(next, traceCounter); 4151 } 4152 4153 @Override 4154 protected int onProcess(QueuedInputEvent q) { 4155 if (mInputQueue != null) { 4156 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 4157 return DEFER; 4158 } 4159 return FORWARD; 4160 } 4161 4162 @Override 4163 public void onFinishedInputEvent(Object token, boolean handled) { 4164 QueuedInputEvent q = (QueuedInputEvent)token; 4165 if (handled) { 4166 finish(q, true); 4167 return; 4168 } 4169 forward(q); 4170 } 4171 } 4172 4173 /** 4174 * Delivers post-ime input events to the view hierarchy. 4175 */ 4176 final class ViewPostImeInputStage extends InputStage { 4177 public ViewPostImeInputStage(InputStage next) { 4178 super(next); 4179 } 4180 4181 @Override 4182 protected int onProcess(QueuedInputEvent q) { 4183 if (q.mEvent instanceof KeyEvent) { 4184 return processKeyEvent(q); 4185 } else { 4186 final int source = q.mEvent.getSource(); 4187 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4188 return processPointerEvent(q); 4189 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4190 return processTrackballEvent(q); 4191 } else { 4192 return processGenericMotionEvent(q); 4193 } 4194 } 4195 } 4196 4197 @Override 4198 protected void onDeliverToNext(QueuedInputEvent q) { 4199 if (mUnbufferedInputDispatch 4200 && q.mEvent instanceof MotionEvent 4201 && ((MotionEvent)q.mEvent).isTouchEvent() 4202 && isTerminalInputEvent(q.mEvent)) { 4203 mUnbufferedInputDispatch = false; 4204 scheduleConsumeBatchedInput(); 4205 } 4206 super.onDeliverToNext(q); 4207 } 4208 4209 private int processKeyEvent(QueuedInputEvent q) { 4210 final KeyEvent event = (KeyEvent)q.mEvent; 4211 4212 // Deliver the key to the view hierarchy. 4213 if (mView.dispatchKeyEvent(event)) { 4214 return FINISH_HANDLED; 4215 } 4216 4217 if (shouldDropInputEvent(q)) { 4218 return FINISH_NOT_HANDLED; 4219 } 4220 4221 // If the Control modifier is held, try to interpret the key as a shortcut. 4222 if (event.getAction() == KeyEvent.ACTION_DOWN 4223 && event.isCtrlPressed() 4224 && event.getRepeatCount() == 0 4225 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4226 if (mView.dispatchKeyShortcutEvent(event)) { 4227 return FINISH_HANDLED; 4228 } 4229 if (shouldDropInputEvent(q)) { 4230 return FINISH_NOT_HANDLED; 4231 } 4232 } 4233 4234 // Apply the fallback event policy. 4235 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4236 return FINISH_HANDLED; 4237 } 4238 if (shouldDropInputEvent(q)) { 4239 return FINISH_NOT_HANDLED; 4240 } 4241 4242 // Handle automatic focus changes. 4243 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4244 int direction = 0; 4245 switch (event.getKeyCode()) { 4246 case KeyEvent.KEYCODE_DPAD_LEFT: 4247 if (event.hasNoModifiers()) { 4248 direction = View.FOCUS_LEFT; 4249 } 4250 break; 4251 case KeyEvent.KEYCODE_DPAD_RIGHT: 4252 if (event.hasNoModifiers()) { 4253 direction = View.FOCUS_RIGHT; 4254 } 4255 break; 4256 case KeyEvent.KEYCODE_DPAD_UP: 4257 if (event.hasNoModifiers()) { 4258 direction = View.FOCUS_UP; 4259 } 4260 break; 4261 case KeyEvent.KEYCODE_DPAD_DOWN: 4262 if (event.hasNoModifiers()) { 4263 direction = View.FOCUS_DOWN; 4264 } 4265 break; 4266 case KeyEvent.KEYCODE_TAB: 4267 if (event.hasNoModifiers()) { 4268 direction = View.FOCUS_FORWARD; 4269 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4270 direction = View.FOCUS_BACKWARD; 4271 } 4272 break; 4273 } 4274 if (direction != 0) { 4275 View focused = mView.findFocus(); 4276 if (focused != null) { 4277 View v = focused.focusSearch(direction); 4278 if (v != null && v != focused) { 4279 // do the math the get the interesting rect 4280 // of previous focused into the coord system of 4281 // newly focused view 4282 focused.getFocusedRect(mTempRect); 4283 if (mView instanceof ViewGroup) { 4284 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4285 focused, mTempRect); 4286 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4287 v, mTempRect); 4288 } 4289 if (v.requestFocus(direction, mTempRect)) { 4290 playSoundEffect(SoundEffectConstants 4291 .getContantForFocusDirection(direction)); 4292 return FINISH_HANDLED; 4293 } 4294 } 4295 4296 // Give the focused view a last chance to handle the dpad key. 4297 if (mView.dispatchUnhandledMove(focused, direction)) { 4298 return FINISH_HANDLED; 4299 } 4300 } else { 4301 // find the best view to give focus to in this non-touch-mode with no-focus 4302 View v = focusSearch(null, direction); 4303 if (v != null && v.requestFocus(direction)) { 4304 return FINISH_HANDLED; 4305 } 4306 } 4307 } 4308 } 4309 return FORWARD; 4310 } 4311 4312 private int processPointerEvent(QueuedInputEvent q) { 4313 final MotionEvent event = (MotionEvent)q.mEvent; 4314 4315 mAttachInfo.mUnbufferedDispatchRequested = false; 4316 final View eventTarget = 4317 (event.isFromSource(InputDevice.SOURCE_MOUSE) && mCapturingView != null) ? 4318 mCapturingView : mView; 4319 mAttachInfo.mHandlingPointerEvent = true; 4320 boolean handled = eventTarget.dispatchPointerEvent(event); 4321 maybeUpdatePointerIcon(event); 4322 mAttachInfo.mHandlingPointerEvent = false; 4323 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4324 mUnbufferedInputDispatch = true; 4325 if (mConsumeBatchedInputScheduled) { 4326 scheduleConsumeBatchedInputImmediately(); 4327 } 4328 } 4329 return handled ? FINISH_HANDLED : FORWARD; 4330 } 4331 4332 private void maybeUpdatePointerIcon(MotionEvent event) { 4333 if (event.getPointerCount() == 1 4334 && event.isFromSource(InputDevice.SOURCE_MOUSE)) { 4335 if (event.getActionMasked() == MotionEvent.ACTION_HOVER_ENTER 4336 || event.getActionMasked() == MotionEvent.ACTION_HOVER_EXIT) { 4337 // Other apps or the window manager may change the icon shape outside of 4338 // this app, therefore the icon shape has to be reset on enter/exit event. 4339 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4340 } 4341 4342 if (event.getActionMasked() != MotionEvent.ACTION_HOVER_EXIT) { 4343 if (!updatePointerIcon(event) && 4344 event.getActionMasked() == MotionEvent.ACTION_HOVER_MOVE) { 4345 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4346 } 4347 } 4348 } 4349 } 4350 4351 private int processTrackballEvent(QueuedInputEvent q) { 4352 final MotionEvent event = (MotionEvent)q.mEvent; 4353 4354 if (mView.dispatchTrackballEvent(event)) { 4355 return FINISH_HANDLED; 4356 } 4357 return FORWARD; 4358 } 4359 4360 private int processGenericMotionEvent(QueuedInputEvent q) { 4361 final MotionEvent event = (MotionEvent)q.mEvent; 4362 4363 // Deliver the event to the view. 4364 if (mView.dispatchGenericMotionEvent(event)) { 4365 return FINISH_HANDLED; 4366 } 4367 return FORWARD; 4368 } 4369 } 4370 4371 private void resetPointerIcon(MotionEvent event) { 4372 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4373 updatePointerIcon(event); 4374 } 4375 4376 private boolean updatePointerIcon(MotionEvent event) { 4377 final float x = event.getX(); 4378 final float y = event.getY(); 4379 if (x < 0 || x >= mView.getWidth() || y < 0 || y >= mView.getHeight()) { 4380 Slog.e(mTag, "updatePointerIcon called with position out of bounds"); 4381 return false; 4382 } 4383 final PointerIcon pointerIcon = mView.getPointerIcon(event, x, y); 4384 final int pointerShape = (pointerIcon != null) ? 4385 pointerIcon.getStyle() : PointerIcon.STYLE_DEFAULT; 4386 4387 if (mPointerIconShape != pointerShape) { 4388 mPointerIconShape = pointerShape; 4389 if (mPointerIconShape != PointerIcon.STYLE_CUSTOM) { 4390 mCustomPointerIcon = null; 4391 InputManager.getInstance().setPointerIconShape(pointerShape); 4392 return true; 4393 } 4394 } 4395 if (mPointerIconShape == PointerIcon.STYLE_CUSTOM && 4396 !pointerIcon.equals(mCustomPointerIcon)) { 4397 mCustomPointerIcon = pointerIcon; 4398 InputManager.getInstance().setCustomPointerIcon(mCustomPointerIcon); 4399 } 4400 return true; 4401 } 4402 4403 /** 4404 * Performs synthesis of new input events from unhandled input events. 4405 */ 4406 final class SyntheticInputStage extends InputStage { 4407 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4408 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4409 private final SyntheticTouchNavigationHandler mTouchNavigation = 4410 new SyntheticTouchNavigationHandler(); 4411 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4412 4413 public SyntheticInputStage() { 4414 super(null); 4415 } 4416 4417 @Override 4418 protected int onProcess(QueuedInputEvent q) { 4419 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4420 if (q.mEvent instanceof MotionEvent) { 4421 final MotionEvent event = (MotionEvent)q.mEvent; 4422 final int source = event.getSource(); 4423 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4424 mTrackball.process(event); 4425 return FINISH_HANDLED; 4426 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4427 mJoystick.process(event); 4428 return FINISH_HANDLED; 4429 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4430 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4431 mTouchNavigation.process(event); 4432 return FINISH_HANDLED; 4433 } 4434 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4435 mKeyboard.process((KeyEvent)q.mEvent); 4436 return FINISH_HANDLED; 4437 } 4438 4439 return FORWARD; 4440 } 4441 4442 @Override 4443 protected void onDeliverToNext(QueuedInputEvent q) { 4444 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4445 // Cancel related synthetic events if any prior stage has handled the event. 4446 if (q.mEvent instanceof MotionEvent) { 4447 final MotionEvent event = (MotionEvent)q.mEvent; 4448 final int source = event.getSource(); 4449 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4450 mTrackball.cancel(event); 4451 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4452 mJoystick.cancel(event); 4453 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4454 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4455 mTouchNavigation.cancel(event); 4456 } 4457 } 4458 } 4459 super.onDeliverToNext(q); 4460 } 4461 } 4462 4463 /** 4464 * Creates dpad events from unhandled trackball movements. 4465 */ 4466 final class SyntheticTrackballHandler { 4467 private final TrackballAxis mX = new TrackballAxis(); 4468 private final TrackballAxis mY = new TrackballAxis(); 4469 private long mLastTime; 4470 4471 public void process(MotionEvent event) { 4472 // Translate the trackball event into DPAD keys and try to deliver those. 4473 long curTime = SystemClock.uptimeMillis(); 4474 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4475 // It has been too long since the last movement, 4476 // so restart at the beginning. 4477 mX.reset(0); 4478 mY.reset(0); 4479 mLastTime = curTime; 4480 } 4481 4482 final int action = event.getAction(); 4483 final int metaState = event.getMetaState(); 4484 switch (action) { 4485 case MotionEvent.ACTION_DOWN: 4486 mX.reset(2); 4487 mY.reset(2); 4488 enqueueInputEvent(new KeyEvent(curTime, curTime, 4489 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4490 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4491 InputDevice.SOURCE_KEYBOARD)); 4492 break; 4493 case MotionEvent.ACTION_UP: 4494 mX.reset(2); 4495 mY.reset(2); 4496 enqueueInputEvent(new KeyEvent(curTime, curTime, 4497 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4498 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4499 InputDevice.SOURCE_KEYBOARD)); 4500 break; 4501 } 4502 4503 if (DEBUG_TRACKBALL) Log.v(mTag, "TB X=" + mX.position + " step=" 4504 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4505 + " move=" + event.getX() 4506 + " / Y=" + mY.position + " step=" 4507 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4508 + " move=" + event.getY()); 4509 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4510 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4511 4512 // Generate DPAD events based on the trackball movement. 4513 // We pick the axis that has moved the most as the direction of 4514 // the DPAD. When we generate DPAD events for one axis, then the 4515 // other axis is reset -- we don't want to perform DPAD jumps due 4516 // to slight movements in the trackball when making major movements 4517 // along the other axis. 4518 int keycode = 0; 4519 int movement = 0; 4520 float accel = 1; 4521 if (xOff > yOff) { 4522 movement = mX.generate(); 4523 if (movement != 0) { 4524 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4525 : KeyEvent.KEYCODE_DPAD_LEFT; 4526 accel = mX.acceleration; 4527 mY.reset(2); 4528 } 4529 } else if (yOff > 0) { 4530 movement = mY.generate(); 4531 if (movement != 0) { 4532 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4533 : KeyEvent.KEYCODE_DPAD_UP; 4534 accel = mY.acceleration; 4535 mX.reset(2); 4536 } 4537 } 4538 4539 if (keycode != 0) { 4540 if (movement < 0) movement = -movement; 4541 int accelMovement = (int)(movement * accel); 4542 if (DEBUG_TRACKBALL) Log.v(mTag, "Move: movement=" + movement 4543 + " accelMovement=" + accelMovement 4544 + " accel=" + accel); 4545 if (accelMovement > movement) { 4546 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4547 + keycode); 4548 movement--; 4549 int repeatCount = accelMovement - movement; 4550 enqueueInputEvent(new KeyEvent(curTime, curTime, 4551 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4552 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4553 InputDevice.SOURCE_KEYBOARD)); 4554 } 4555 while (movement > 0) { 4556 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4557 + keycode); 4558 movement--; 4559 curTime = SystemClock.uptimeMillis(); 4560 enqueueInputEvent(new KeyEvent(curTime, curTime, 4561 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4562 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4563 InputDevice.SOURCE_KEYBOARD)); 4564 enqueueInputEvent(new KeyEvent(curTime, curTime, 4565 KeyEvent.ACTION_UP, keycode, 0, metaState, 4566 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4567 InputDevice.SOURCE_KEYBOARD)); 4568 } 4569 mLastTime = curTime; 4570 } 4571 } 4572 4573 public void cancel(MotionEvent event) { 4574 mLastTime = Integer.MIN_VALUE; 4575 4576 // If we reach this, we consumed a trackball event. 4577 // Because we will not translate the trackball event into a key event, 4578 // touch mode will not exit, so we exit touch mode here. 4579 if (mView != null && mAdded) { 4580 ensureTouchMode(false); 4581 } 4582 } 4583 } 4584 4585 /** 4586 * Maintains state information for a single trackball axis, generating 4587 * discrete (DPAD) movements based on raw trackball motion. 4588 */ 4589 static final class TrackballAxis { 4590 /** 4591 * The maximum amount of acceleration we will apply. 4592 */ 4593 static final float MAX_ACCELERATION = 20; 4594 4595 /** 4596 * The maximum amount of time (in milliseconds) between events in order 4597 * for us to consider the user to be doing fast trackball movements, 4598 * and thus apply an acceleration. 4599 */ 4600 static final long FAST_MOVE_TIME = 150; 4601 4602 /** 4603 * Scaling factor to the time (in milliseconds) between events to how 4604 * much to multiple/divide the current acceleration. When movement 4605 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4606 * FAST_MOVE_TIME it divides it. 4607 */ 4608 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4609 4610 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4611 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4612 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4613 4614 float position; 4615 float acceleration = 1; 4616 long lastMoveTime = 0; 4617 int step; 4618 int dir; 4619 int nonAccelMovement; 4620 4621 void reset(int _step) { 4622 position = 0; 4623 acceleration = 1; 4624 lastMoveTime = 0; 4625 step = _step; 4626 dir = 0; 4627 } 4628 4629 /** 4630 * Add trackball movement into the state. If the direction of movement 4631 * has been reversed, the state is reset before adding the 4632 * movement (so that you don't have to compensate for any previously 4633 * collected movement before see the result of the movement in the 4634 * new direction). 4635 * 4636 * @return Returns the absolute value of the amount of movement 4637 * collected so far. 4638 */ 4639 float collect(float off, long time, String axis) { 4640 long normTime; 4641 if (off > 0) { 4642 normTime = (long)(off * FAST_MOVE_TIME); 4643 if (dir < 0) { 4644 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4645 position = 0; 4646 step = 0; 4647 acceleration = 1; 4648 lastMoveTime = 0; 4649 } 4650 dir = 1; 4651 } else if (off < 0) { 4652 normTime = (long)((-off) * FAST_MOVE_TIME); 4653 if (dir > 0) { 4654 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4655 position = 0; 4656 step = 0; 4657 acceleration = 1; 4658 lastMoveTime = 0; 4659 } 4660 dir = -1; 4661 } else { 4662 normTime = 0; 4663 } 4664 4665 // The number of milliseconds between each movement that is 4666 // considered "normal" and will not result in any acceleration 4667 // or deceleration, scaled by the offset we have here. 4668 if (normTime > 0) { 4669 long delta = time - lastMoveTime; 4670 lastMoveTime = time; 4671 float acc = acceleration; 4672 if (delta < normTime) { 4673 // The user is scrolling rapidly, so increase acceleration. 4674 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4675 if (scale > 1) acc *= scale; 4676 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4677 + off + " normTime=" + normTime + " delta=" + delta 4678 + " scale=" + scale + " acc=" + acc); 4679 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4680 } else { 4681 // The user is scrolling slowly, so decrease acceleration. 4682 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4683 if (scale > 1) acc /= scale; 4684 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4685 + off + " normTime=" + normTime + " delta=" + delta 4686 + " scale=" + scale + " acc=" + acc); 4687 acceleration = acc > 1 ? acc : 1; 4688 } 4689 } 4690 position += off; 4691 return Math.abs(position); 4692 } 4693 4694 /** 4695 * Generate the number of discrete movement events appropriate for 4696 * the currently collected trackball movement. 4697 * 4698 * @return Returns the number of discrete movements, either positive 4699 * or negative, or 0 if there is not enough trackball movement yet 4700 * for a discrete movement. 4701 */ 4702 int generate() { 4703 int movement = 0; 4704 nonAccelMovement = 0; 4705 do { 4706 final int dir = position >= 0 ? 1 : -1; 4707 switch (step) { 4708 // If we are going to execute the first step, then we want 4709 // to do this as soon as possible instead of waiting for 4710 // a full movement, in order to make things look responsive. 4711 case 0: 4712 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4713 return movement; 4714 } 4715 movement += dir; 4716 nonAccelMovement += dir; 4717 step = 1; 4718 break; 4719 // If we have generated the first movement, then we need 4720 // to wait for the second complete trackball motion before 4721 // generating the second discrete movement. 4722 case 1: 4723 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4724 return movement; 4725 } 4726 movement += dir; 4727 nonAccelMovement += dir; 4728 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4729 step = 2; 4730 break; 4731 // After the first two, we generate discrete movements 4732 // consistently with the trackball, applying an acceleration 4733 // if the trackball is moving quickly. This is a simple 4734 // acceleration on top of what we already compute based 4735 // on how quickly the wheel is being turned, to apply 4736 // a longer increasing acceleration to continuous movement 4737 // in one direction. 4738 default: 4739 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4740 return movement; 4741 } 4742 movement += dir; 4743 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4744 float acc = acceleration; 4745 acc *= 1.1f; 4746 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4747 break; 4748 } 4749 } while (true); 4750 } 4751 } 4752 4753 /** 4754 * Creates dpad events from unhandled joystick movements. 4755 */ 4756 final class SyntheticJoystickHandler extends Handler { 4757 private final static String TAG = "SyntheticJoystickHandler"; 4758 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4759 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4760 4761 private int mLastXDirection; 4762 private int mLastYDirection; 4763 private int mLastXKeyCode; 4764 private int mLastYKeyCode; 4765 4766 public SyntheticJoystickHandler() { 4767 super(true); 4768 } 4769 4770 @Override 4771 public void handleMessage(Message msg) { 4772 switch (msg.what) { 4773 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4774 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4775 KeyEvent oldEvent = (KeyEvent)msg.obj; 4776 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4777 SystemClock.uptimeMillis(), 4778 oldEvent.getRepeatCount() + 1); 4779 if (mAttachInfo.mHasWindowFocus) { 4780 enqueueInputEvent(e); 4781 Message m = obtainMessage(msg.what, e); 4782 m.setAsynchronous(true); 4783 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4784 } 4785 } break; 4786 } 4787 } 4788 4789 public void process(MotionEvent event) { 4790 switch(event.getActionMasked()) { 4791 case MotionEvent.ACTION_CANCEL: 4792 cancel(event); 4793 break; 4794 case MotionEvent.ACTION_MOVE: 4795 update(event, true); 4796 break; 4797 default: 4798 Log.w(mTag, "Unexpected action: " + event.getActionMasked()); 4799 } 4800 } 4801 4802 private void cancel(MotionEvent event) { 4803 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4804 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4805 update(event, false); 4806 } 4807 4808 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4809 final long time = event.getEventTime(); 4810 final int metaState = event.getMetaState(); 4811 final int deviceId = event.getDeviceId(); 4812 final int source = event.getSource(); 4813 4814 int xDirection = joystickAxisValueToDirection( 4815 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4816 if (xDirection == 0) { 4817 xDirection = joystickAxisValueToDirection(event.getX()); 4818 } 4819 4820 int yDirection = joystickAxisValueToDirection( 4821 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4822 if (yDirection == 0) { 4823 yDirection = joystickAxisValueToDirection(event.getY()); 4824 } 4825 4826 if (xDirection != mLastXDirection) { 4827 if (mLastXKeyCode != 0) { 4828 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4829 enqueueInputEvent(new KeyEvent(time, time, 4830 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4831 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4832 mLastXKeyCode = 0; 4833 } 4834 4835 mLastXDirection = xDirection; 4836 4837 if (xDirection != 0 && synthesizeNewKeys) { 4838 mLastXKeyCode = xDirection > 0 4839 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4840 final KeyEvent e = new KeyEvent(time, time, 4841 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4842 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4843 enqueueInputEvent(e); 4844 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4845 m.setAsynchronous(true); 4846 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4847 } 4848 } 4849 4850 if (yDirection != mLastYDirection) { 4851 if (mLastYKeyCode != 0) { 4852 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4853 enqueueInputEvent(new KeyEvent(time, time, 4854 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4855 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4856 mLastYKeyCode = 0; 4857 } 4858 4859 mLastYDirection = yDirection; 4860 4861 if (yDirection != 0 && synthesizeNewKeys) { 4862 mLastYKeyCode = yDirection > 0 4863 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4864 final KeyEvent e = new KeyEvent(time, time, 4865 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4866 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4867 enqueueInputEvent(e); 4868 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4869 m.setAsynchronous(true); 4870 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4871 } 4872 } 4873 } 4874 4875 private int joystickAxisValueToDirection(float value) { 4876 if (value >= 0.5f) { 4877 return 1; 4878 } else if (value <= -0.5f) { 4879 return -1; 4880 } else { 4881 return 0; 4882 } 4883 } 4884 } 4885 4886 /** 4887 * Creates dpad events from unhandled touch navigation movements. 4888 */ 4889 final class SyntheticTouchNavigationHandler extends Handler { 4890 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4891 private static final boolean LOCAL_DEBUG = false; 4892 4893 // Assumed nominal width and height in millimeters of a touch navigation pad, 4894 // if no resolution information is available from the input system. 4895 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4896 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4897 4898 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4899 4900 // The nominal distance traveled to move by one unit. 4901 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4902 4903 // Minimum and maximum fling velocity in ticks per second. 4904 // The minimum velocity should be set such that we perform enough ticks per 4905 // second that the fling appears to be fluid. For example, if we set the minimum 4906 // to 2 ticks per second, then there may be up to half a second delay between the next 4907 // to last and last ticks which is noticeably discrete and jerky. This value should 4908 // probably not be set to anything less than about 4. 4909 // If fling accuracy is a problem then consider tuning the tick distance instead. 4910 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4911 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4912 4913 // Fling velocity decay factor applied after each new key is emitted. 4914 // This parameter controls the deceleration and overall duration of the fling. 4915 // The fling stops automatically when its velocity drops below the minimum 4916 // fling velocity defined above. 4917 private static final float FLING_TICK_DECAY = 0.8f; 4918 4919 /* The input device that we are tracking. */ 4920 4921 private int mCurrentDeviceId = -1; 4922 private int mCurrentSource; 4923 private boolean mCurrentDeviceSupported; 4924 4925 /* Configuration for the current input device. */ 4926 4927 // The scaled tick distance. A movement of this amount should generally translate 4928 // into a single dpad event in a given direction. 4929 private float mConfigTickDistance; 4930 4931 // The minimum and maximum scaled fling velocity. 4932 private float mConfigMinFlingVelocity; 4933 private float mConfigMaxFlingVelocity; 4934 4935 /* Tracking state. */ 4936 4937 // The velocity tracker for detecting flings. 4938 private VelocityTracker mVelocityTracker; 4939 4940 // The active pointer id, or -1 if none. 4941 private int mActivePointerId = -1; 4942 4943 // Location where tracking started. 4944 private float mStartX; 4945 private float mStartY; 4946 4947 // Most recently observed position. 4948 private float mLastX; 4949 private float mLastY; 4950 4951 // Accumulated movement delta since the last direction key was sent. 4952 private float mAccumulatedX; 4953 private float mAccumulatedY; 4954 4955 // Set to true if any movement was delivered to the app. 4956 // Implies that tap slop was exceeded. 4957 private boolean mConsumedMovement; 4958 4959 // The most recently sent key down event. 4960 // The keycode remains set until the direction changes or a fling ends 4961 // so that repeated key events may be generated as required. 4962 private long mPendingKeyDownTime; 4963 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4964 private int mPendingKeyRepeatCount; 4965 private int mPendingKeyMetaState; 4966 4967 // The current fling velocity while a fling is in progress. 4968 private boolean mFlinging; 4969 private float mFlingVelocity; 4970 4971 public SyntheticTouchNavigationHandler() { 4972 super(true); 4973 } 4974 4975 public void process(MotionEvent event) { 4976 // Update the current device information. 4977 final long time = event.getEventTime(); 4978 final int deviceId = event.getDeviceId(); 4979 final int source = event.getSource(); 4980 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4981 finishKeys(time); 4982 finishTracking(time); 4983 mCurrentDeviceId = deviceId; 4984 mCurrentSource = source; 4985 mCurrentDeviceSupported = false; 4986 InputDevice device = event.getDevice(); 4987 if (device != null) { 4988 // In order to support an input device, we must know certain 4989 // characteristics about it, such as its size and resolution. 4990 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4991 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4992 if (xRange != null && yRange != null) { 4993 mCurrentDeviceSupported = true; 4994 4995 // Infer the resolution if it not actually known. 4996 float xRes = xRange.getResolution(); 4997 if (xRes <= 0) { 4998 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4999 } 5000 float yRes = yRange.getResolution(); 5001 if (yRes <= 0) { 5002 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 5003 } 5004 float nominalRes = (xRes + yRes) * 0.5f; 5005 5006 // Precompute all of the configuration thresholds we will need. 5007 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 5008 mConfigMinFlingVelocity = 5009 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5010 mConfigMaxFlingVelocity = 5011 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5012 5013 if (LOCAL_DEBUG) { 5014 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 5015 + " (" + Integer.toHexString(mCurrentSource) + "): " 5016 + ", mConfigTickDistance=" + mConfigTickDistance 5017 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 5018 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 5019 } 5020 } 5021 } 5022 } 5023 if (!mCurrentDeviceSupported) { 5024 return; 5025 } 5026 5027 // Handle the event. 5028 final int action = event.getActionMasked(); 5029 switch (action) { 5030 case MotionEvent.ACTION_DOWN: { 5031 boolean caughtFling = mFlinging; 5032 finishKeys(time); 5033 finishTracking(time); 5034 mActivePointerId = event.getPointerId(0); 5035 mVelocityTracker = VelocityTracker.obtain(); 5036 mVelocityTracker.addMovement(event); 5037 mStartX = event.getX(); 5038 mStartY = event.getY(); 5039 mLastX = mStartX; 5040 mLastY = mStartY; 5041 mAccumulatedX = 0; 5042 mAccumulatedY = 0; 5043 5044 // If we caught a fling, then pretend that the tap slop has already 5045 // been exceeded to suppress taps whose only purpose is to stop the fling. 5046 mConsumedMovement = caughtFling; 5047 break; 5048 } 5049 5050 case MotionEvent.ACTION_MOVE: 5051 case MotionEvent.ACTION_UP: { 5052 if (mActivePointerId < 0) { 5053 break; 5054 } 5055 final int index = event.findPointerIndex(mActivePointerId); 5056 if (index < 0) { 5057 finishKeys(time); 5058 finishTracking(time); 5059 break; 5060 } 5061 5062 mVelocityTracker.addMovement(event); 5063 final float x = event.getX(index); 5064 final float y = event.getY(index); 5065 mAccumulatedX += x - mLastX; 5066 mAccumulatedY += y - mLastY; 5067 mLastX = x; 5068 mLastY = y; 5069 5070 // Consume any accumulated movement so far. 5071 final int metaState = event.getMetaState(); 5072 consumeAccumulatedMovement(time, metaState); 5073 5074 // Detect taps and flings. 5075 if (action == MotionEvent.ACTION_UP) { 5076 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5077 // It might be a fling. 5078 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 5079 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 5080 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 5081 if (!startFling(time, vx, vy)) { 5082 finishKeys(time); 5083 } 5084 } 5085 finishTracking(time); 5086 } 5087 break; 5088 } 5089 5090 case MotionEvent.ACTION_CANCEL: { 5091 finishKeys(time); 5092 finishTracking(time); 5093 break; 5094 } 5095 } 5096 } 5097 5098 public void cancel(MotionEvent event) { 5099 if (mCurrentDeviceId == event.getDeviceId() 5100 && mCurrentSource == event.getSource()) { 5101 final long time = event.getEventTime(); 5102 finishKeys(time); 5103 finishTracking(time); 5104 } 5105 } 5106 5107 private void finishKeys(long time) { 5108 cancelFling(); 5109 sendKeyUp(time); 5110 } 5111 5112 private void finishTracking(long time) { 5113 if (mActivePointerId >= 0) { 5114 mActivePointerId = -1; 5115 mVelocityTracker.recycle(); 5116 mVelocityTracker = null; 5117 } 5118 } 5119 5120 private void consumeAccumulatedMovement(long time, int metaState) { 5121 final float absX = Math.abs(mAccumulatedX); 5122 final float absY = Math.abs(mAccumulatedY); 5123 if (absX >= absY) { 5124 if (absX >= mConfigTickDistance) { 5125 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 5126 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 5127 mAccumulatedY = 0; 5128 mConsumedMovement = true; 5129 } 5130 } else { 5131 if (absY >= mConfigTickDistance) { 5132 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 5133 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 5134 mAccumulatedX = 0; 5135 mConsumedMovement = true; 5136 } 5137 } 5138 } 5139 5140 private float consumeAccumulatedMovement(long time, int metaState, 5141 float accumulator, int negativeKeyCode, int positiveKeyCode) { 5142 while (accumulator <= -mConfigTickDistance) { 5143 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 5144 accumulator += mConfigTickDistance; 5145 } 5146 while (accumulator >= mConfigTickDistance) { 5147 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 5148 accumulator -= mConfigTickDistance; 5149 } 5150 return accumulator; 5151 } 5152 5153 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 5154 if (mPendingKeyCode != keyCode) { 5155 sendKeyUp(time); 5156 mPendingKeyDownTime = time; 5157 mPendingKeyCode = keyCode; 5158 mPendingKeyRepeatCount = 0; 5159 } else { 5160 mPendingKeyRepeatCount += 1; 5161 } 5162 mPendingKeyMetaState = metaState; 5163 5164 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 5165 // but it doesn't quite make sense when simulating the events in this way. 5166 if (LOCAL_DEBUG) { 5167 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 5168 + ", repeatCount=" + mPendingKeyRepeatCount 5169 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5170 } 5171 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5172 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 5173 mPendingKeyMetaState, mCurrentDeviceId, 5174 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 5175 } 5176 5177 private void sendKeyUp(long time) { 5178 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5179 if (LOCAL_DEBUG) { 5180 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 5181 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5182 } 5183 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5184 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 5185 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 5186 mCurrentSource)); 5187 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5188 } 5189 } 5190 5191 private boolean startFling(long time, float vx, float vy) { 5192 if (LOCAL_DEBUG) { 5193 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 5194 + ", min=" + mConfigMinFlingVelocity); 5195 } 5196 5197 // Flings must be oriented in the same direction as the preceding movements. 5198 switch (mPendingKeyCode) { 5199 case KeyEvent.KEYCODE_DPAD_LEFT: 5200 if (-vx >= mConfigMinFlingVelocity 5201 && Math.abs(vy) < mConfigMinFlingVelocity) { 5202 mFlingVelocity = -vx; 5203 break; 5204 } 5205 return false; 5206 5207 case KeyEvent.KEYCODE_DPAD_RIGHT: 5208 if (vx >= mConfigMinFlingVelocity 5209 && Math.abs(vy) < mConfigMinFlingVelocity) { 5210 mFlingVelocity = vx; 5211 break; 5212 } 5213 return false; 5214 5215 case KeyEvent.KEYCODE_DPAD_UP: 5216 if (-vy >= mConfigMinFlingVelocity 5217 && Math.abs(vx) < mConfigMinFlingVelocity) { 5218 mFlingVelocity = -vy; 5219 break; 5220 } 5221 return false; 5222 5223 case KeyEvent.KEYCODE_DPAD_DOWN: 5224 if (vy >= mConfigMinFlingVelocity 5225 && Math.abs(vx) < mConfigMinFlingVelocity) { 5226 mFlingVelocity = vy; 5227 break; 5228 } 5229 return false; 5230 } 5231 5232 // Post the first fling event. 5233 mFlinging = postFling(time); 5234 return mFlinging; 5235 } 5236 5237 private boolean postFling(long time) { 5238 // The idea here is to estimate the time when the pointer would have 5239 // traveled one tick distance unit given the current fling velocity. 5240 // This effect creates continuity of motion. 5241 if (mFlingVelocity >= mConfigMinFlingVelocity) { 5242 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 5243 postAtTime(mFlingRunnable, time + delay); 5244 if (LOCAL_DEBUG) { 5245 Log.d(LOCAL_TAG, "Posted fling: velocity=" 5246 + mFlingVelocity + ", delay=" + delay 5247 + ", keyCode=" + mPendingKeyCode); 5248 } 5249 return true; 5250 } 5251 return false; 5252 } 5253 5254 private void cancelFling() { 5255 if (mFlinging) { 5256 removeCallbacks(mFlingRunnable); 5257 mFlinging = false; 5258 } 5259 } 5260 5261 private final Runnable mFlingRunnable = new Runnable() { 5262 @Override 5263 public void run() { 5264 final long time = SystemClock.uptimeMillis(); 5265 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5266 mFlingVelocity *= FLING_TICK_DECAY; 5267 if (!postFling(time)) { 5268 mFlinging = false; 5269 finishKeys(time); 5270 } 5271 } 5272 }; 5273 } 5274 5275 final class SyntheticKeyboardHandler { 5276 public void process(KeyEvent event) { 5277 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5278 return; 5279 } 5280 5281 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5282 final int keyCode = event.getKeyCode(); 5283 final int metaState = event.getMetaState(); 5284 5285 // Check for fallback actions specified by the key character map. 5286 KeyCharacterMap.FallbackAction fallbackAction = 5287 kcm.getFallbackAction(keyCode, metaState); 5288 if (fallbackAction != null) { 5289 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5290 KeyEvent fallbackEvent = KeyEvent.obtain( 5291 event.getDownTime(), event.getEventTime(), 5292 event.getAction(), fallbackAction.keyCode, 5293 event.getRepeatCount(), fallbackAction.metaState, 5294 event.getDeviceId(), event.getScanCode(), 5295 flags, event.getSource(), null); 5296 fallbackAction.recycle(); 5297 enqueueInputEvent(fallbackEvent); 5298 } 5299 } 5300 } 5301 5302 /** 5303 * Returns true if the key is used for keyboard navigation. 5304 * @param keyEvent The key event. 5305 * @return True if the key is used for keyboard navigation. 5306 */ 5307 private static boolean isNavigationKey(KeyEvent keyEvent) { 5308 switch (keyEvent.getKeyCode()) { 5309 case KeyEvent.KEYCODE_DPAD_LEFT: 5310 case KeyEvent.KEYCODE_DPAD_RIGHT: 5311 case KeyEvent.KEYCODE_DPAD_UP: 5312 case KeyEvent.KEYCODE_DPAD_DOWN: 5313 case KeyEvent.KEYCODE_DPAD_CENTER: 5314 case KeyEvent.KEYCODE_PAGE_UP: 5315 case KeyEvent.KEYCODE_PAGE_DOWN: 5316 case KeyEvent.KEYCODE_MOVE_HOME: 5317 case KeyEvent.KEYCODE_MOVE_END: 5318 case KeyEvent.KEYCODE_TAB: 5319 case KeyEvent.KEYCODE_SPACE: 5320 case KeyEvent.KEYCODE_ENTER: 5321 return true; 5322 } 5323 return false; 5324 } 5325 5326 /** 5327 * Returns true if the key is used for typing. 5328 * @param keyEvent The key event. 5329 * @return True if the key is used for typing. 5330 */ 5331 private static boolean isTypingKey(KeyEvent keyEvent) { 5332 return keyEvent.getUnicodeChar() > 0; 5333 } 5334 5335 /** 5336 * See if the key event means we should leave touch mode (and leave touch mode if so). 5337 * @param event The key event. 5338 * @return Whether this key event should be consumed (meaning the act of 5339 * leaving touch mode alone is considered the event). 5340 */ 5341 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5342 // Only relevant in touch mode. 5343 if (!mAttachInfo.mInTouchMode) { 5344 return false; 5345 } 5346 5347 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5348 final int action = event.getAction(); 5349 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5350 return false; 5351 } 5352 5353 // Don't leave touch mode if the IME told us not to. 5354 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5355 return false; 5356 } 5357 5358 // If the key can be used for keyboard navigation then leave touch mode 5359 // and select a focused view if needed (in ensureTouchMode). 5360 // When a new focused view is selected, we consume the navigation key because 5361 // navigation doesn't make much sense unless a view already has focus so 5362 // the key's purpose is to set focus. 5363 if (isNavigationKey(event)) { 5364 return ensureTouchMode(false); 5365 } 5366 5367 // If the key can be used for typing then leave touch mode 5368 // and select a focused view if needed (in ensureTouchMode). 5369 // Always allow the view to process the typing key. 5370 if (isTypingKey(event)) { 5371 ensureTouchMode(false); 5372 return false; 5373 } 5374 5375 return false; 5376 } 5377 5378 /* drag/drop */ 5379 void setLocalDragState(Object obj) { 5380 mLocalDragState = obj; 5381 } 5382 5383 private void handleDragEvent(DragEvent event) { 5384 // From the root, only drag start/end/location are dispatched. entered/exited 5385 // are determined and dispatched by the viewgroup hierarchy, who then report 5386 // that back here for ultimate reporting back to the framework. 5387 if (mView != null && mAdded) { 5388 final int what = event.mAction; 5389 5390 if (what == DragEvent.ACTION_DRAG_EXITED) { 5391 // A direct EXITED event means that the window manager knows we've just crossed 5392 // a window boundary, so the current drag target within this one must have 5393 // just been exited. Send it the usual notifications and then we're done 5394 // for now. 5395 mView.dispatchDragEvent(event); 5396 } else { 5397 // Cache the drag description when the operation starts, then fill it in 5398 // on subsequent calls as a convenience 5399 if (what == DragEvent.ACTION_DRAG_STARTED) { 5400 mCurrentDragView = null; // Start the current-recipient tracking 5401 mDragDescription = event.mClipDescription; 5402 } else { 5403 event.mClipDescription = mDragDescription; 5404 } 5405 5406 // For events with a [screen] location, translate into window coordinates 5407 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5408 mDragPoint.set(event.mX, event.mY); 5409 if (mTranslator != null) { 5410 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5411 } 5412 5413 if (mCurScrollY != 0) { 5414 mDragPoint.offset(0, mCurScrollY); 5415 } 5416 5417 event.mX = mDragPoint.x; 5418 event.mY = mDragPoint.y; 5419 } 5420 5421 // Remember who the current drag target is pre-dispatch 5422 final View prevDragView = mCurrentDragView; 5423 5424 // Now dispatch the drag/drop event 5425 boolean result = mView.dispatchDragEvent(event); 5426 5427 // If we changed apparent drag target, tell the OS about it 5428 if (prevDragView != mCurrentDragView) { 5429 try { 5430 if (prevDragView != null) { 5431 mWindowSession.dragRecipientExited(mWindow); 5432 } 5433 if (mCurrentDragView != null) { 5434 mWindowSession.dragRecipientEntered(mWindow); 5435 } 5436 } catch (RemoteException e) { 5437 Slog.e(mTag, "Unable to note drag target change"); 5438 } 5439 } 5440 5441 // Report the drop result when we're done 5442 if (what == DragEvent.ACTION_DROP) { 5443 mDragDescription = null; 5444 try { 5445 Log.i(mTag, "Reporting drop result: " + result); 5446 mWindowSession.reportDropResult(mWindow, result); 5447 } catch (RemoteException e) { 5448 Log.e(mTag, "Unable to report drop result"); 5449 } 5450 } 5451 5452 // When the drag operation ends, reset drag-related state 5453 if (what == DragEvent.ACTION_DRAG_ENDED) { 5454 setLocalDragState(null); 5455 mAttachInfo.mDragToken = null; 5456 if (mAttachInfo.mDragSurface != null) { 5457 mAttachInfo.mDragSurface.release(); 5458 mAttachInfo.mDragSurface = null; 5459 } 5460 } 5461 } 5462 } 5463 event.recycle(); 5464 } 5465 5466 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5467 if (mSeq != args.seq) { 5468 // The sequence has changed, so we need to update our value and make 5469 // sure to do a traversal afterward so the window manager is given our 5470 // most recent data. 5471 mSeq = args.seq; 5472 mAttachInfo.mForceReportNewAttributes = true; 5473 scheduleTraversals(); 5474 } 5475 if (mView == null) return; 5476 if (args.localChanges != 0) { 5477 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5478 } 5479 5480 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5481 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5482 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5483 mView.dispatchSystemUiVisibilityChanged(visibility); 5484 } 5485 } 5486 5487 public void handleDispatchWindowShown() { 5488 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5489 } 5490 5491 public void handleRequestKeyboardShortcuts(IResultReceiver receiver) { 5492 Bundle data = new Bundle(); 5493 ArrayList<KeyboardShortcutGroup> list = new ArrayList<>(); 5494 if (mView != null) { 5495 mView.requestKeyboardShortcuts(list); 5496 } 5497 data.putParcelableArrayList(WindowManager.PARCEL_KEY_SHORTCUTS_ARRAY, list); 5498 try { 5499 receiver.send(0, data); 5500 } catch (RemoteException e) { 5501 } 5502 } 5503 5504 public void getLastTouchPoint(Point outLocation) { 5505 outLocation.x = (int) mLastTouchPoint.x; 5506 outLocation.y = (int) mLastTouchPoint.y; 5507 } 5508 5509 public int getLastTouchSource() { 5510 return mLastTouchSource; 5511 } 5512 5513 public void setDragFocus(View newDragTarget) { 5514 if (mCurrentDragView != newDragTarget) { 5515 mCurrentDragView = newDragTarget; 5516 } 5517 } 5518 5519 private AudioManager getAudioManager() { 5520 if (mView == null) { 5521 throw new IllegalStateException("getAudioManager called when there is no mView"); 5522 } 5523 if (mAudioManager == null) { 5524 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5525 } 5526 return mAudioManager; 5527 } 5528 5529 public AccessibilityInteractionController getAccessibilityInteractionController() { 5530 if (mView == null) { 5531 throw new IllegalStateException("getAccessibilityInteractionController" 5532 + " called when there is no mView"); 5533 } 5534 if (mAccessibilityInteractionController == null) { 5535 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5536 } 5537 return mAccessibilityInteractionController; 5538 } 5539 5540 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5541 boolean insetsPending) throws RemoteException { 5542 5543 float appScale = mAttachInfo.mApplicationScale; 5544 boolean restore = false; 5545 if (params != null && mTranslator != null) { 5546 restore = true; 5547 params.backup(); 5548 mTranslator.translateWindowLayout(params); 5549 } 5550 if (params != null) { 5551 if (DBG) Log.d(mTag, "WindowLayout in layoutWindow:" + params); 5552 } 5553 mPendingConfiguration.seq = 0; 5554 //Log.d(mTag, ">>>>>> CALLING relayout"); 5555 if (params != null && mOrigWindowType != params.type) { 5556 // For compatibility with old apps, don't crash here. 5557 if (mTargetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5558 Slog.w(mTag, "Window type can not be changed after " 5559 + "the window is added; ignoring change of " + mView); 5560 params.type = mOrigWindowType; 5561 } 5562 } 5563 int relayoutResult = mWindowSession.relayout( 5564 mWindow, mSeq, params, 5565 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5566 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5567 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5568 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5569 mPendingStableInsets, mPendingOutsets, mPendingBackDropFrame, mPendingConfiguration, 5570 mSurface); 5571 //Log.d(mTag, "<<<<<< BACK FROM relayout"); 5572 if (restore) { 5573 params.restore(); 5574 } 5575 5576 if (mTranslator != null) { 5577 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5578 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5579 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5580 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5581 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5582 } 5583 return relayoutResult; 5584 } 5585 5586 /** 5587 * {@inheritDoc} 5588 */ 5589 @Override 5590 public void playSoundEffect(int effectId) { 5591 checkThread(); 5592 5593 try { 5594 final AudioManager audioManager = getAudioManager(); 5595 5596 switch (effectId) { 5597 case SoundEffectConstants.CLICK: 5598 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5599 return; 5600 case SoundEffectConstants.NAVIGATION_DOWN: 5601 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5602 return; 5603 case SoundEffectConstants.NAVIGATION_LEFT: 5604 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5605 return; 5606 case SoundEffectConstants.NAVIGATION_RIGHT: 5607 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5608 return; 5609 case SoundEffectConstants.NAVIGATION_UP: 5610 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5611 return; 5612 default: 5613 throw new IllegalArgumentException("unknown effect id " + effectId + 5614 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5615 } 5616 } catch (IllegalStateException e) { 5617 // Exception thrown by getAudioManager() when mView is null 5618 Log.e(mTag, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5619 e.printStackTrace(); 5620 } 5621 } 5622 5623 /** 5624 * {@inheritDoc} 5625 */ 5626 @Override 5627 public boolean performHapticFeedback(int effectId, boolean always) { 5628 try { 5629 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5630 } catch (RemoteException e) { 5631 return false; 5632 } 5633 } 5634 5635 /** 5636 * {@inheritDoc} 5637 */ 5638 @Override 5639 public View focusSearch(View focused, int direction) { 5640 checkThread(); 5641 if (!(mView instanceof ViewGroup)) { 5642 return null; 5643 } 5644 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5645 } 5646 5647 public void debug() { 5648 mView.debug(); 5649 } 5650 5651 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5652 String innerPrefix = prefix + " "; 5653 writer.print(prefix); writer.println("ViewRoot:"); 5654 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5655 writer.print(" mRemoved="); writer.println(mRemoved); 5656 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5657 writer.println(mConsumeBatchedInputScheduled); 5658 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5659 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5660 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5661 writer.println(mPendingInputEventCount); 5662 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5663 writer.println(mProcessInputEventsScheduled); 5664 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5665 writer.print(mTraversalScheduled); 5666 writer.print(innerPrefix); writer.print("mIsAmbientMode="); 5667 writer.print(mIsAmbientMode); 5668 if (mTraversalScheduled) { 5669 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5670 } else { 5671 writer.println(); 5672 } 5673 mFirstInputStage.dump(innerPrefix, writer); 5674 5675 mChoreographer.dump(prefix, writer); 5676 5677 writer.print(prefix); writer.println("View Hierarchy:"); 5678 dumpViewHierarchy(innerPrefix, writer, mView); 5679 } 5680 5681 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5682 writer.print(prefix); 5683 if (view == null) { 5684 writer.println("null"); 5685 return; 5686 } 5687 writer.println(view.toString()); 5688 if (!(view instanceof ViewGroup)) { 5689 return; 5690 } 5691 ViewGroup grp = (ViewGroup)view; 5692 final int N = grp.getChildCount(); 5693 if (N <= 0) { 5694 return; 5695 } 5696 prefix = prefix + " "; 5697 for (int i=0; i<N; i++) { 5698 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5699 } 5700 } 5701 5702 public void dumpGfxInfo(int[] info) { 5703 info[0] = info[1] = 0; 5704 if (mView != null) { 5705 getGfxInfo(mView, info); 5706 } 5707 } 5708 5709 private static void getGfxInfo(View view, int[] info) { 5710 RenderNode renderNode = view.mRenderNode; 5711 info[0]++; 5712 if (renderNode != null) { 5713 info[1] += renderNode.getDebugSize(); 5714 } 5715 5716 if (view instanceof ViewGroup) { 5717 ViewGroup group = (ViewGroup) view; 5718 5719 int count = group.getChildCount(); 5720 for (int i = 0; i < count; i++) { 5721 getGfxInfo(group.getChildAt(i), info); 5722 } 5723 } 5724 } 5725 5726 /** 5727 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5728 * @return True, request has been queued. False, request has been completed. 5729 */ 5730 boolean die(boolean immediate) { 5731 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5732 // done by dispatchDetachedFromWindow will cause havoc on return. 5733 if (immediate && !mIsInTraversal) { 5734 doDie(); 5735 return false; 5736 } 5737 5738 if (!mIsDrawing) { 5739 destroyHardwareRenderer(); 5740 } else { 5741 Log.e(mTag, "Attempting to destroy the window while drawing!\n" + 5742 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5743 } 5744 mHandler.sendEmptyMessage(MSG_DIE); 5745 return true; 5746 } 5747 5748 void doDie() { 5749 checkThread(); 5750 if (LOCAL_LOGV) Log.v(mTag, "DIE in " + this + " of " + mSurface); 5751 synchronized (this) { 5752 if (mRemoved) { 5753 return; 5754 } 5755 mRemoved = true; 5756 if (mAdded) { 5757 dispatchDetachedFromWindow(); 5758 } 5759 5760 if (mAdded && !mFirst) { 5761 destroyHardwareRenderer(); 5762 5763 if (mView != null) { 5764 int viewVisibility = mView.getVisibility(); 5765 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5766 if (mWindowAttributesChanged || viewVisibilityChanged) { 5767 // If layout params have been changed, first give them 5768 // to the window manager to make sure it has the correct 5769 // animation info. 5770 try { 5771 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5772 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5773 mWindowSession.finishDrawing(mWindow); 5774 } 5775 } catch (RemoteException e) { 5776 } 5777 } 5778 5779 mSurface.release(); 5780 } 5781 } 5782 5783 mAdded = false; 5784 } 5785 WindowManagerGlobal.getInstance().doRemoveView(this); 5786 } 5787 5788 public void requestUpdateConfiguration(Configuration config) { 5789 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5790 mHandler.sendMessage(msg); 5791 } 5792 5793 public void loadSystemProperties() { 5794 mHandler.post(new Runnable() { 5795 @Override 5796 public void run() { 5797 // Profiling 5798 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5799 profileRendering(mAttachInfo.mHasWindowFocus); 5800 5801 // Hardware rendering 5802 if (mAttachInfo.mHardwareRenderer != null) { 5803 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5804 invalidate(); 5805 } 5806 } 5807 5808 // Layout debugging 5809 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5810 if (layout != mAttachInfo.mDebugLayout) { 5811 mAttachInfo.mDebugLayout = layout; 5812 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5813 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5814 } 5815 } 5816 } 5817 }); 5818 } 5819 5820 private void destroyHardwareRenderer() { 5821 ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5822 5823 if (hardwareRenderer != null) { 5824 if (mView != null) { 5825 hardwareRenderer.destroyHardwareResources(mView); 5826 } 5827 hardwareRenderer.destroy(); 5828 hardwareRenderer.setRequested(false); 5829 5830 mAttachInfo.mHardwareRenderer = null; 5831 mAttachInfo.mHardwareAccelerated = false; 5832 } 5833 } 5834 5835 public void dispatchFinishInputConnection(InputConnection connection) { 5836 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5837 mHandler.sendMessage(msg); 5838 } 5839 5840 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5841 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 5842 Configuration newConfig, Rect backDropFrame, boolean forceLayout) { 5843 if (DEBUG_LAYOUT) Log.v(mTag, "Resizing " + this + ": frame=" + frame.toShortString() 5844 + " contentInsets=" + contentInsets.toShortString() 5845 + " visibleInsets=" + visibleInsets.toShortString() 5846 + " reportDraw=" + reportDraw 5847 + " backDropFrame=" + backDropFrame); 5848 5849 // Tell all listeners that we are resizing the window so that the chrome can get 5850 // updated as fast as possible on a separate thread, 5851 if (mDragResizing) { 5852 boolean fullscreen = frame.equals(backDropFrame); 5853 synchronized (mWindowCallbacks) { 5854 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 5855 mWindowCallbacks.get(i).onWindowSizeIsChanging(backDropFrame, fullscreen, 5856 visibleInsets, stableInsets); 5857 } 5858 } 5859 } 5860 5861 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5862 if (mTranslator != null) { 5863 mTranslator.translateRectInScreenToAppWindow(frame); 5864 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5865 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5866 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5867 } 5868 SomeArgs args = SomeArgs.obtain(); 5869 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5870 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5871 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5872 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5873 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5874 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5875 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5876 args.arg7 = sameProcessCall ? new Rect(outsets) : outsets; 5877 args.arg8 = sameProcessCall ? new Rect(backDropFrame) : backDropFrame; 5878 args.argi1 = forceLayout ? 1 : 0; 5879 msg.obj = args; 5880 mHandler.sendMessage(msg); 5881 } 5882 5883 public void dispatchMoved(int newX, int newY) { 5884 if (DEBUG_LAYOUT) Log.v(mTag, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5885 if (mTranslator != null) { 5886 PointF point = new PointF(newX, newY); 5887 mTranslator.translatePointInScreenToAppWindow(point); 5888 newX = (int) (point.x + 0.5); 5889 newY = (int) (point.y + 0.5); 5890 } 5891 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5892 mHandler.sendMessage(msg); 5893 } 5894 5895 /** 5896 * Represents a pending input event that is waiting in a queue. 5897 * 5898 * Input events are processed in serial order by the timestamp specified by 5899 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5900 * one input event to the application at a time and waits for the application 5901 * to finish handling it before delivering the next one. 5902 * 5903 * However, because the application or IME can synthesize and inject multiple 5904 * key events at a time without going through the input dispatcher, we end up 5905 * needing a queue on the application's side. 5906 */ 5907 private static final class QueuedInputEvent { 5908 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5909 public static final int FLAG_DEFERRED = 1 << 1; 5910 public static final int FLAG_FINISHED = 1 << 2; 5911 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5912 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5913 public static final int FLAG_UNHANDLED = 1 << 5; 5914 5915 public QueuedInputEvent mNext; 5916 5917 public InputEvent mEvent; 5918 public InputEventReceiver mReceiver; 5919 public int mFlags; 5920 5921 public boolean shouldSkipIme() { 5922 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5923 return true; 5924 } 5925 return mEvent instanceof MotionEvent 5926 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5927 } 5928 5929 public boolean shouldSendToSynthesizer() { 5930 if ((mFlags & FLAG_UNHANDLED) != 0) { 5931 return true; 5932 } 5933 5934 return false; 5935 } 5936 5937 @Override 5938 public String toString() { 5939 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5940 boolean hasPrevious = false; 5941 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5942 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5943 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5944 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5945 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5946 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5947 if (!hasPrevious) { 5948 sb.append("0"); 5949 } 5950 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5951 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5952 sb.append(", mEvent=" + mEvent + "}"); 5953 return sb.toString(); 5954 } 5955 5956 private boolean flagToString(String name, int flag, 5957 boolean hasPrevious, StringBuilder sb) { 5958 if ((mFlags & flag) != 0) { 5959 if (hasPrevious) { 5960 sb.append("|"); 5961 } 5962 sb.append(name); 5963 return true; 5964 } 5965 return hasPrevious; 5966 } 5967 } 5968 5969 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5970 InputEventReceiver receiver, int flags) { 5971 QueuedInputEvent q = mQueuedInputEventPool; 5972 if (q != null) { 5973 mQueuedInputEventPoolSize -= 1; 5974 mQueuedInputEventPool = q.mNext; 5975 q.mNext = null; 5976 } else { 5977 q = new QueuedInputEvent(); 5978 } 5979 5980 q.mEvent = event; 5981 q.mReceiver = receiver; 5982 q.mFlags = flags; 5983 return q; 5984 } 5985 5986 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5987 q.mEvent = null; 5988 q.mReceiver = null; 5989 5990 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5991 mQueuedInputEventPoolSize += 1; 5992 q.mNext = mQueuedInputEventPool; 5993 mQueuedInputEventPool = q; 5994 } 5995 } 5996 5997 void enqueueInputEvent(InputEvent event) { 5998 enqueueInputEvent(event, null, 0, false); 5999 } 6000 6001 void enqueueInputEvent(InputEvent event, 6002 InputEventReceiver receiver, int flags, boolean processImmediately) { 6003 adjustInputEventForCompatibility(event); 6004 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 6005 6006 // Always enqueue the input event in order, regardless of its time stamp. 6007 // We do this because the application or the IME may inject key events 6008 // in response to touch events and we want to ensure that the injected keys 6009 // are processed in the order they were received and we cannot trust that 6010 // the time stamp of injected events are monotonic. 6011 QueuedInputEvent last = mPendingInputEventTail; 6012 if (last == null) { 6013 mPendingInputEventHead = q; 6014 mPendingInputEventTail = q; 6015 } else { 6016 last.mNext = q; 6017 mPendingInputEventTail = q; 6018 } 6019 mPendingInputEventCount += 1; 6020 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6021 mPendingInputEventCount); 6022 6023 if (processImmediately) { 6024 doProcessInputEvents(); 6025 } else { 6026 scheduleProcessInputEvents(); 6027 } 6028 } 6029 6030 private void scheduleProcessInputEvents() { 6031 if (!mProcessInputEventsScheduled) { 6032 mProcessInputEventsScheduled = true; 6033 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 6034 msg.setAsynchronous(true); 6035 mHandler.sendMessage(msg); 6036 } 6037 } 6038 6039 void doProcessInputEvents() { 6040 // Deliver all pending input events in the queue. 6041 while (mPendingInputEventHead != null) { 6042 QueuedInputEvent q = mPendingInputEventHead; 6043 mPendingInputEventHead = q.mNext; 6044 if (mPendingInputEventHead == null) { 6045 mPendingInputEventTail = null; 6046 } 6047 q.mNext = null; 6048 6049 mPendingInputEventCount -= 1; 6050 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6051 mPendingInputEventCount); 6052 6053 long eventTime = q.mEvent.getEventTimeNano(); 6054 long oldestEventTime = eventTime; 6055 if (q.mEvent instanceof MotionEvent) { 6056 MotionEvent me = (MotionEvent)q.mEvent; 6057 if (me.getHistorySize() > 0) { 6058 oldestEventTime = me.getHistoricalEventTimeNano(0); 6059 } 6060 } 6061 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 6062 6063 deliverInputEvent(q); 6064 } 6065 6066 // We are done processing all input events that we can process right now 6067 // so we can clear the pending flag immediately. 6068 if (mProcessInputEventsScheduled) { 6069 mProcessInputEventsScheduled = false; 6070 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 6071 } 6072 } 6073 6074 private void deliverInputEvent(QueuedInputEvent q) { 6075 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6076 q.mEvent.getSequenceNumber()); 6077 if (mInputEventConsistencyVerifier != null) { 6078 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 6079 } 6080 6081 InputStage stage; 6082 if (q.shouldSendToSynthesizer()) { 6083 stage = mSyntheticInputStage; 6084 } else { 6085 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 6086 } 6087 6088 if (stage != null) { 6089 stage.deliver(q); 6090 } else { 6091 finishInputEvent(q); 6092 } 6093 } 6094 6095 private void finishInputEvent(QueuedInputEvent q) { 6096 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6097 q.mEvent.getSequenceNumber()); 6098 6099 if (q.mReceiver != null) { 6100 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 6101 q.mReceiver.finishInputEvent(q.mEvent, handled); 6102 } else { 6103 q.mEvent.recycleIfNeededAfterDispatch(); 6104 } 6105 6106 recycleQueuedInputEvent(q); 6107 } 6108 6109 private void adjustInputEventForCompatibility(InputEvent e) { 6110 if (mTargetSdkVersion < Build.VERSION_CODES.M && e instanceof MotionEvent) { 6111 MotionEvent motion = (MotionEvent) e; 6112 final int mask = 6113 MotionEvent.BUTTON_STYLUS_PRIMARY | MotionEvent.BUTTON_STYLUS_SECONDARY; 6114 final int buttonState = motion.getButtonState(); 6115 final int compatButtonState = (buttonState & mask) >> 4; 6116 if (compatButtonState != 0) { 6117 motion.setButtonState(buttonState | compatButtonState); 6118 } 6119 } 6120 } 6121 6122 static boolean isTerminalInputEvent(InputEvent event) { 6123 if (event instanceof KeyEvent) { 6124 final KeyEvent keyEvent = (KeyEvent)event; 6125 return keyEvent.getAction() == KeyEvent.ACTION_UP; 6126 } else { 6127 final MotionEvent motionEvent = (MotionEvent)event; 6128 final int action = motionEvent.getAction(); 6129 return action == MotionEvent.ACTION_UP 6130 || action == MotionEvent.ACTION_CANCEL 6131 || action == MotionEvent.ACTION_HOVER_EXIT; 6132 } 6133 } 6134 6135 void scheduleConsumeBatchedInput() { 6136 if (!mConsumeBatchedInputScheduled) { 6137 mConsumeBatchedInputScheduled = true; 6138 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 6139 mConsumedBatchedInputRunnable, null); 6140 } 6141 } 6142 6143 void unscheduleConsumeBatchedInput() { 6144 if (mConsumeBatchedInputScheduled) { 6145 mConsumeBatchedInputScheduled = false; 6146 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 6147 mConsumedBatchedInputRunnable, null); 6148 } 6149 } 6150 6151 void scheduleConsumeBatchedInputImmediately() { 6152 if (!mConsumeBatchedInputImmediatelyScheduled) { 6153 unscheduleConsumeBatchedInput(); 6154 mConsumeBatchedInputImmediatelyScheduled = true; 6155 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 6156 } 6157 } 6158 6159 void doConsumeBatchedInput(long frameTimeNanos) { 6160 if (mConsumeBatchedInputScheduled) { 6161 mConsumeBatchedInputScheduled = false; 6162 if (mInputEventReceiver != null) { 6163 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 6164 && frameTimeNanos != -1) { 6165 // If we consumed a batch here, we want to go ahead and schedule the 6166 // consumption of batched input events on the next frame. Otherwise, we would 6167 // wait until we have more input events pending and might get starved by other 6168 // things occurring in the process. If the frame time is -1, however, then 6169 // we're in a non-batching mode, so there's no need to schedule this. 6170 scheduleConsumeBatchedInput(); 6171 } 6172 } 6173 doProcessInputEvents(); 6174 } 6175 } 6176 6177 final class TraversalRunnable implements Runnable { 6178 @Override 6179 public void run() { 6180 doTraversal(); 6181 } 6182 } 6183 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 6184 6185 final class WindowInputEventReceiver extends InputEventReceiver { 6186 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 6187 super(inputChannel, looper); 6188 } 6189 6190 @Override 6191 public void onInputEvent(InputEvent event) { 6192 enqueueInputEvent(event, this, 0, true); 6193 } 6194 6195 @Override 6196 public void onBatchedInputEventPending() { 6197 if (mUnbufferedInputDispatch) { 6198 super.onBatchedInputEventPending(); 6199 } else { 6200 scheduleConsumeBatchedInput(); 6201 } 6202 } 6203 6204 @Override 6205 public void dispose() { 6206 unscheduleConsumeBatchedInput(); 6207 super.dispose(); 6208 } 6209 } 6210 WindowInputEventReceiver mInputEventReceiver; 6211 6212 final class ConsumeBatchedInputRunnable implements Runnable { 6213 @Override 6214 public void run() { 6215 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 6216 } 6217 } 6218 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 6219 new ConsumeBatchedInputRunnable(); 6220 boolean mConsumeBatchedInputScheduled; 6221 6222 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 6223 @Override 6224 public void run() { 6225 doConsumeBatchedInput(-1); 6226 } 6227 } 6228 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 6229 new ConsumeBatchedInputImmediatelyRunnable(); 6230 boolean mConsumeBatchedInputImmediatelyScheduled; 6231 6232 final class InvalidateOnAnimationRunnable implements Runnable { 6233 private boolean mPosted; 6234 private final ArrayList<View> mViews = new ArrayList<View>(); 6235 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 6236 new ArrayList<AttachInfo.InvalidateInfo>(); 6237 private View[] mTempViews; 6238 private AttachInfo.InvalidateInfo[] mTempViewRects; 6239 6240 public void addView(View view) { 6241 synchronized (this) { 6242 mViews.add(view); 6243 postIfNeededLocked(); 6244 } 6245 } 6246 6247 public void addViewRect(AttachInfo.InvalidateInfo info) { 6248 synchronized (this) { 6249 mViewRects.add(info); 6250 postIfNeededLocked(); 6251 } 6252 } 6253 6254 public void removeView(View view) { 6255 synchronized (this) { 6256 mViews.remove(view); 6257 6258 for (int i = mViewRects.size(); i-- > 0; ) { 6259 AttachInfo.InvalidateInfo info = mViewRects.get(i); 6260 if (info.target == view) { 6261 mViewRects.remove(i); 6262 info.recycle(); 6263 } 6264 } 6265 6266 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 6267 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 6268 mPosted = false; 6269 } 6270 } 6271 } 6272 6273 @Override 6274 public void run() { 6275 final int viewCount; 6276 final int viewRectCount; 6277 synchronized (this) { 6278 mPosted = false; 6279 6280 viewCount = mViews.size(); 6281 if (viewCount != 0) { 6282 mTempViews = mViews.toArray(mTempViews != null 6283 ? mTempViews : new View[viewCount]); 6284 mViews.clear(); 6285 } 6286 6287 viewRectCount = mViewRects.size(); 6288 if (viewRectCount != 0) { 6289 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6290 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6291 mViewRects.clear(); 6292 } 6293 } 6294 6295 for (int i = 0; i < viewCount; i++) { 6296 mTempViews[i].invalidate(); 6297 mTempViews[i] = null; 6298 } 6299 6300 for (int i = 0; i < viewRectCount; i++) { 6301 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6302 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6303 info.recycle(); 6304 } 6305 } 6306 6307 private void postIfNeededLocked() { 6308 if (!mPosted) { 6309 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6310 mPosted = true; 6311 } 6312 } 6313 } 6314 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6315 new InvalidateOnAnimationRunnable(); 6316 6317 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6318 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6319 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6320 } 6321 6322 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6323 long delayMilliseconds) { 6324 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6325 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6326 } 6327 6328 public void dispatchInvalidateOnAnimation(View view) { 6329 mInvalidateOnAnimationRunnable.addView(view); 6330 } 6331 6332 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6333 mInvalidateOnAnimationRunnable.addViewRect(info); 6334 } 6335 6336 public void cancelInvalidate(View view) { 6337 mHandler.removeMessages(MSG_INVALIDATE, view); 6338 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6339 // them to the pool 6340 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6341 mInvalidateOnAnimationRunnable.removeView(view); 6342 } 6343 6344 public void dispatchInputEvent(InputEvent event) { 6345 dispatchInputEvent(event, null); 6346 } 6347 6348 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6349 SomeArgs args = SomeArgs.obtain(); 6350 args.arg1 = event; 6351 args.arg2 = receiver; 6352 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6353 msg.setAsynchronous(true); 6354 mHandler.sendMessage(msg); 6355 } 6356 6357 public void synthesizeInputEvent(InputEvent event) { 6358 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6359 msg.setAsynchronous(true); 6360 mHandler.sendMessage(msg); 6361 } 6362 6363 public void dispatchKeyFromIme(KeyEvent event) { 6364 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6365 msg.setAsynchronous(true); 6366 mHandler.sendMessage(msg); 6367 } 6368 6369 /** 6370 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6371 * 6372 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6373 * passes in. 6374 */ 6375 public void dispatchUnhandledInputEvent(InputEvent event) { 6376 if (event instanceof MotionEvent) { 6377 event = MotionEvent.obtain((MotionEvent) event); 6378 } 6379 synthesizeInputEvent(event); 6380 } 6381 6382 public void dispatchAppVisibility(boolean visible) { 6383 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6384 msg.arg1 = visible ? 1 : 0; 6385 mHandler.sendMessage(msg); 6386 } 6387 6388 public void dispatchGetNewSurface() { 6389 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6390 mHandler.sendMessage(msg); 6391 } 6392 6393 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6394 Message msg = Message.obtain(); 6395 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6396 msg.arg1 = hasFocus ? 1 : 0; 6397 msg.arg2 = inTouchMode ? 1 : 0; 6398 mHandler.sendMessage(msg); 6399 } 6400 6401 public void dispatchWindowShown() { 6402 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6403 } 6404 6405 public void dispatchCloseSystemDialogs(String reason) { 6406 Message msg = Message.obtain(); 6407 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6408 msg.obj = reason; 6409 mHandler.sendMessage(msg); 6410 } 6411 6412 public void dispatchDragEvent(DragEvent event) { 6413 final int what; 6414 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6415 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6416 mHandler.removeMessages(what); 6417 } else { 6418 what = MSG_DISPATCH_DRAG_EVENT; 6419 } 6420 Message msg = mHandler.obtainMessage(what, event); 6421 mHandler.sendMessage(msg); 6422 } 6423 6424 public void updatePointerIcon(float x, float y) { 6425 final int what = MSG_UPDATE_POINTER_ICON; 6426 mHandler.removeMessages(what); 6427 final long now = SystemClock.uptimeMillis(); 6428 final MotionEvent event = MotionEvent.obtain( 6429 0, now, MotionEvent.ACTION_HOVER_MOVE, x, y, 0); 6430 Message msg = mHandler.obtainMessage(what, event); 6431 mHandler.sendMessage(msg); 6432 } 6433 6434 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6435 int localValue, int localChanges) { 6436 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6437 args.seq = seq; 6438 args.globalVisibility = globalVisibility; 6439 args.localValue = localValue; 6440 args.localChanges = localChanges; 6441 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6442 } 6443 6444 public void dispatchCheckFocus() { 6445 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6446 // This will result in a call to checkFocus() below. 6447 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6448 } 6449 } 6450 6451 public void dispatchRequestKeyboardShortcuts(IResultReceiver receiver) { 6452 mHandler.obtainMessage(MSG_REQUEST_KEYBOARD_SHORTCUTS, receiver).sendToTarget(); 6453 } 6454 6455 /** 6456 * Post a callback to send a 6457 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6458 * This event is send at most once every 6459 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6460 */ 6461 private void postSendWindowContentChangedCallback(View source, int changeType) { 6462 if (mSendWindowContentChangedAccessibilityEvent == null) { 6463 mSendWindowContentChangedAccessibilityEvent = 6464 new SendWindowContentChangedAccessibilityEvent(); 6465 } 6466 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6467 } 6468 6469 /** 6470 * Remove a posted callback to send a 6471 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6472 */ 6473 private void removeSendWindowContentChangedCallback() { 6474 if (mSendWindowContentChangedAccessibilityEvent != null) { 6475 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6476 } 6477 } 6478 6479 @Override 6480 public boolean showContextMenuForChild(View originalView) { 6481 return false; 6482 } 6483 6484 @Override 6485 public boolean showContextMenuForChild(View originalView, float x, float y) { 6486 return false; 6487 } 6488 6489 @Override 6490 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6491 return null; 6492 } 6493 6494 @Override 6495 public ActionMode startActionModeForChild( 6496 View originalView, ActionMode.Callback callback, int type) { 6497 return null; 6498 } 6499 6500 @Override 6501 public void createContextMenu(ContextMenu menu) { 6502 } 6503 6504 @Override 6505 public void childDrawableStateChanged(View child) { 6506 } 6507 6508 @Override 6509 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6510 if (mView == null || mStopped || mPausedForTransition) { 6511 return false; 6512 } 6513 // Intercept accessibility focus events fired by virtual nodes to keep 6514 // track of accessibility focus position in such nodes. 6515 final int eventType = event.getEventType(); 6516 switch (eventType) { 6517 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6518 final long sourceNodeId = event.getSourceNodeId(); 6519 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6520 sourceNodeId); 6521 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6522 if (source != null) { 6523 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6524 if (provider != null) { 6525 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6526 sourceNodeId); 6527 final AccessibilityNodeInfo node; 6528 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6529 node = provider.createAccessibilityNodeInfo( 6530 AccessibilityNodeProvider.HOST_VIEW_ID); 6531 } else { 6532 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6533 } 6534 setAccessibilityFocus(source, node); 6535 } 6536 } 6537 } break; 6538 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6539 final long sourceNodeId = event.getSourceNodeId(); 6540 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6541 sourceNodeId); 6542 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6543 if (source != null) { 6544 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6545 if (provider != null) { 6546 setAccessibilityFocus(null, null); 6547 } 6548 } 6549 } break; 6550 6551 6552 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6553 handleWindowContentChangedEvent(event); 6554 } break; 6555 } 6556 mAccessibilityManager.sendAccessibilityEvent(event); 6557 return true; 6558 } 6559 6560 /** 6561 * Updates the focused virtual view, when necessary, in response to a 6562 * content changed event. 6563 * <p> 6564 * This is necessary to get updated bounds after a position change. 6565 * 6566 * @param event an accessibility event of type 6567 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} 6568 */ 6569 private void handleWindowContentChangedEvent(AccessibilityEvent event) { 6570 final View focusedHost = mAccessibilityFocusedHost; 6571 if (focusedHost == null || mAccessibilityFocusedVirtualView == null) { 6572 // No virtual view focused, nothing to do here. 6573 return; 6574 } 6575 6576 final AccessibilityNodeProvider provider = focusedHost.getAccessibilityNodeProvider(); 6577 if (provider == null) { 6578 // Error state: virtual view with no provider. Clear focus. 6579 mAccessibilityFocusedHost = null; 6580 mAccessibilityFocusedVirtualView = null; 6581 focusedHost.clearAccessibilityFocusNoCallbacks(); 6582 return; 6583 } 6584 6585 // We only care about change types that may affect the bounds of the 6586 // focused virtual view. 6587 final int changes = event.getContentChangeTypes(); 6588 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) == 0 6589 && changes != AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6590 return; 6591 } 6592 6593 final long eventSourceNodeId = event.getSourceNodeId(); 6594 final int changedViewId = AccessibilityNodeInfo.getAccessibilityViewId(eventSourceNodeId); 6595 6596 // Search up the tree for subtree containment. 6597 boolean hostInSubtree = false; 6598 View root = mAccessibilityFocusedHost; 6599 while (root != null && !hostInSubtree) { 6600 if (changedViewId == root.getAccessibilityViewId()) { 6601 hostInSubtree = true; 6602 } else { 6603 final ViewParent parent = root.getParent(); 6604 if (parent instanceof View) { 6605 root = (View) parent; 6606 } else { 6607 root = null; 6608 } 6609 } 6610 } 6611 6612 // We care only about changes in subtrees containing the host view. 6613 if (!hostInSubtree) { 6614 return; 6615 } 6616 6617 final long focusedSourceNodeId = mAccessibilityFocusedVirtualView.getSourceNodeId(); 6618 int focusedChildId = AccessibilityNodeInfo.getVirtualDescendantId(focusedSourceNodeId); 6619 if (focusedChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6620 // TODO: Should we clear the focused virtual view? 6621 focusedChildId = AccessibilityNodeProvider.HOST_VIEW_ID; 6622 } 6623 6624 // Refresh the node for the focused virtual view. 6625 final Rect oldBounds = mTempRect; 6626 mAccessibilityFocusedVirtualView.getBoundsInScreen(oldBounds); 6627 mAccessibilityFocusedVirtualView = provider.createAccessibilityNodeInfo(focusedChildId); 6628 if (mAccessibilityFocusedVirtualView == null) { 6629 // Error state: The node no longer exists. Clear focus. 6630 mAccessibilityFocusedHost = null; 6631 focusedHost.clearAccessibilityFocusNoCallbacks(); 6632 6633 // This will probably fail, but try to keep the provider's internal 6634 // state consistent by clearing focus. 6635 provider.performAction(focusedChildId, 6636 AccessibilityAction.ACTION_CLEAR_ACCESSIBILITY_FOCUS.getId(), null); 6637 invalidateRectOnScreen(oldBounds); 6638 } else { 6639 // The node was refreshed, invalidate bounds if necessary. 6640 final Rect newBounds = mAccessibilityFocusedVirtualView.getBoundsInScreen(); 6641 if (!oldBounds.equals(newBounds)) { 6642 oldBounds.union(newBounds); 6643 invalidateRectOnScreen(oldBounds); 6644 } 6645 } 6646 } 6647 6648 @Override 6649 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6650 postSendWindowContentChangedCallback(source, changeType); 6651 } 6652 6653 @Override 6654 public boolean canResolveLayoutDirection() { 6655 return true; 6656 } 6657 6658 @Override 6659 public boolean isLayoutDirectionResolved() { 6660 return true; 6661 } 6662 6663 @Override 6664 public int getLayoutDirection() { 6665 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6666 } 6667 6668 @Override 6669 public boolean canResolveTextDirection() { 6670 return true; 6671 } 6672 6673 @Override 6674 public boolean isTextDirectionResolved() { 6675 return true; 6676 } 6677 6678 @Override 6679 public int getTextDirection() { 6680 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6681 } 6682 6683 @Override 6684 public boolean canResolveTextAlignment() { 6685 return true; 6686 } 6687 6688 @Override 6689 public boolean isTextAlignmentResolved() { 6690 return true; 6691 } 6692 6693 @Override 6694 public int getTextAlignment() { 6695 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6696 } 6697 6698 private View getCommonPredecessor(View first, View second) { 6699 if (mTempHashSet == null) { 6700 mTempHashSet = new HashSet<View>(); 6701 } 6702 HashSet<View> seen = mTempHashSet; 6703 seen.clear(); 6704 View firstCurrent = first; 6705 while (firstCurrent != null) { 6706 seen.add(firstCurrent); 6707 ViewParent firstCurrentParent = firstCurrent.mParent; 6708 if (firstCurrentParent instanceof View) { 6709 firstCurrent = (View) firstCurrentParent; 6710 } else { 6711 firstCurrent = null; 6712 } 6713 } 6714 View secondCurrent = second; 6715 while (secondCurrent != null) { 6716 if (seen.contains(secondCurrent)) { 6717 seen.clear(); 6718 return secondCurrent; 6719 } 6720 ViewParent secondCurrentParent = secondCurrent.mParent; 6721 if (secondCurrentParent instanceof View) { 6722 secondCurrent = (View) secondCurrentParent; 6723 } else { 6724 secondCurrent = null; 6725 } 6726 } 6727 seen.clear(); 6728 return null; 6729 } 6730 6731 void checkThread() { 6732 if (mThread != Thread.currentThread()) { 6733 throw new CalledFromWrongThreadException( 6734 "Only the original thread that created a view hierarchy can touch its views."); 6735 } 6736 } 6737 6738 @Override 6739 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6740 // ViewAncestor never intercepts touch event, so this can be a no-op 6741 } 6742 6743 @Override 6744 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6745 if (rectangle == null) { 6746 return scrollToRectOrFocus(null, immediate); 6747 } 6748 rectangle.offset(child.getLeft() - child.getScrollX(), 6749 child.getTop() - child.getScrollY()); 6750 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6751 mTempRect.set(rectangle); 6752 mTempRect.offset(0, -mCurScrollY); 6753 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6754 try { 6755 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6756 } catch (RemoteException re) { 6757 /* ignore */ 6758 } 6759 return scrolled; 6760 } 6761 6762 @Override 6763 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6764 // Do nothing. 6765 } 6766 6767 @Override 6768 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6769 return false; 6770 } 6771 6772 @Override 6773 public void onStopNestedScroll(View target) { 6774 } 6775 6776 @Override 6777 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6778 } 6779 6780 @Override 6781 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6782 int dxUnconsumed, int dyUnconsumed) { 6783 } 6784 6785 @Override 6786 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6787 } 6788 6789 @Override 6790 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6791 return false; 6792 } 6793 6794 @Override 6795 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6796 return false; 6797 } 6798 6799 @Override 6800 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6801 return false; 6802 } 6803 6804 /** 6805 * Force the window to report its next draw. 6806 * <p> 6807 * This method is only supposed to be used to speed up the interaction from SystemUI and window 6808 * manager when waiting for the first frame to be drawn when turning on the screen. DO NOT USE 6809 * unless you fully understand this interaction. 6810 * @hide 6811 */ 6812 public void setReportNextDraw() { 6813 mReportNextDraw = true; 6814 invalidate(); 6815 } 6816 6817 void changeCanvasOpacity(boolean opaque) { 6818 Log.d(mTag, "changeCanvasOpacity: opaque=" + opaque); 6819 if (mAttachInfo.mHardwareRenderer != null) { 6820 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6821 } 6822 } 6823 6824 class TakenSurfaceHolder extends BaseSurfaceHolder { 6825 @Override 6826 public boolean onAllowLockCanvas() { 6827 return mDrawingAllowed; 6828 } 6829 6830 @Override 6831 public void onRelayoutContainer() { 6832 // Not currently interesting -- from changing between fixed and layout size. 6833 } 6834 6835 @Override 6836 public void setFormat(int format) { 6837 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6838 } 6839 6840 @Override 6841 public void setType(int type) { 6842 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6843 } 6844 6845 @Override 6846 public void onUpdateSurface() { 6847 // We take care of format and type changes on our own. 6848 throw new IllegalStateException("Shouldn't be here"); 6849 } 6850 6851 @Override 6852 public boolean isCreating() { 6853 return mIsCreating; 6854 } 6855 6856 @Override 6857 public void setFixedSize(int width, int height) { 6858 throw new UnsupportedOperationException( 6859 "Currently only support sizing from layout"); 6860 } 6861 6862 @Override 6863 public void setKeepScreenOn(boolean screenOn) { 6864 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6865 } 6866 } 6867 6868 static class W extends IWindow.Stub { 6869 private final WeakReference<ViewRootImpl> mViewAncestor; 6870 private final IWindowSession mWindowSession; 6871 6872 W(ViewRootImpl viewAncestor) { 6873 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6874 mWindowSession = viewAncestor.mWindowSession; 6875 } 6876 6877 @Override 6878 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6879 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 6880 Configuration newConfig, Rect backDropFrame, boolean forceLayout) { 6881 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6882 if (viewAncestor != null) { 6883 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6884 visibleInsets, stableInsets, outsets, reportDraw, newConfig, backDropFrame, 6885 forceLayout); 6886 } 6887 } 6888 6889 @Override 6890 public void moved(int newX, int newY) { 6891 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6892 if (viewAncestor != null) { 6893 viewAncestor.dispatchMoved(newX, newY); 6894 } 6895 } 6896 6897 @Override 6898 public void dispatchAppVisibility(boolean visible) { 6899 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6900 if (viewAncestor != null) { 6901 viewAncestor.dispatchAppVisibility(visible); 6902 } 6903 } 6904 6905 @Override 6906 public void dispatchGetNewSurface() { 6907 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6908 if (viewAncestor != null) { 6909 viewAncestor.dispatchGetNewSurface(); 6910 } 6911 } 6912 6913 @Override 6914 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6915 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6916 if (viewAncestor != null) { 6917 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6918 } 6919 } 6920 6921 private static int checkCallingPermission(String permission) { 6922 try { 6923 return ActivityManagerNative.getDefault().checkPermission( 6924 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6925 } catch (RemoteException e) { 6926 return PackageManager.PERMISSION_DENIED; 6927 } 6928 } 6929 6930 @Override 6931 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6932 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6933 if (viewAncestor != null) { 6934 final View view = viewAncestor.mView; 6935 if (view != null) { 6936 if (checkCallingPermission(Manifest.permission.DUMP) != 6937 PackageManager.PERMISSION_GRANTED) { 6938 throw new SecurityException("Insufficient permissions to invoke" 6939 + " executeCommand() from pid=" + Binder.getCallingPid() 6940 + ", uid=" + Binder.getCallingUid()); 6941 } 6942 6943 OutputStream clientStream = null; 6944 try { 6945 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6946 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6947 } catch (IOException e) { 6948 e.printStackTrace(); 6949 } finally { 6950 if (clientStream != null) { 6951 try { 6952 clientStream.close(); 6953 } catch (IOException e) { 6954 e.printStackTrace(); 6955 } 6956 } 6957 } 6958 } 6959 } 6960 } 6961 6962 @Override 6963 public void closeSystemDialogs(String reason) { 6964 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6965 if (viewAncestor != null) { 6966 viewAncestor.dispatchCloseSystemDialogs(reason); 6967 } 6968 } 6969 6970 @Override 6971 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6972 boolean sync) { 6973 if (sync) { 6974 try { 6975 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6976 } catch (RemoteException e) { 6977 } 6978 } 6979 } 6980 6981 @Override 6982 public void dispatchWallpaperCommand(String action, int x, int y, 6983 int z, Bundle extras, boolean sync) { 6984 if (sync) { 6985 try { 6986 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6987 } catch (RemoteException e) { 6988 } 6989 } 6990 } 6991 6992 /* Drag/drop */ 6993 @Override 6994 public void dispatchDragEvent(DragEvent event) { 6995 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6996 if (viewAncestor != null) { 6997 viewAncestor.dispatchDragEvent(event); 6998 } 6999 } 7000 7001 @Override 7002 public void updatePointerIcon(float x, float y) { 7003 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7004 if (viewAncestor != null) { 7005 viewAncestor.updatePointerIcon(x, y); 7006 } 7007 } 7008 7009 @Override 7010 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 7011 int localValue, int localChanges) { 7012 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7013 if (viewAncestor != null) { 7014 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 7015 localValue, localChanges); 7016 } 7017 } 7018 7019 @Override 7020 public void dispatchWindowShown() { 7021 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7022 if (viewAncestor != null) { 7023 viewAncestor.dispatchWindowShown(); 7024 } 7025 } 7026 7027 @Override 7028 public void requestAppKeyboardShortcuts(IResultReceiver receiver) { 7029 ViewRootImpl viewAncestor = mViewAncestor.get(); 7030 if (viewAncestor != null) { 7031 viewAncestor.dispatchRequestKeyboardShortcuts(receiver); 7032 } 7033 } 7034 } 7035 7036 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 7037 public CalledFromWrongThreadException(String msg) { 7038 super(msg); 7039 } 7040 } 7041 7042 static HandlerActionQueue getRunQueue() { 7043 HandlerActionQueue rq = sRunQueues.get(); 7044 if (rq != null) { 7045 return rq; 7046 } 7047 rq = new HandlerActionQueue(); 7048 sRunQueues.set(rq); 7049 return rq; 7050 } 7051 7052 /** 7053 * Start a drag resizing which will inform all listeners that a window resize is taking place. 7054 */ 7055 private void startDragResizing(Rect initialBounds, boolean fullscreen, Rect systemInsets, 7056 Rect stableInsets) { 7057 if (!mDragResizing) { 7058 mDragResizing = true; 7059 synchronized (mWindowCallbacks) { 7060 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7061 mWindowCallbacks.get(i).onWindowDragResizeStart(initialBounds, fullscreen, 7062 systemInsets, stableInsets); 7063 } 7064 } 7065 mFullRedrawNeeded = true; 7066 } 7067 } 7068 7069 /** 7070 * End a drag resize which will inform all listeners that a window resize has ended. 7071 */ 7072 private void endDragResizing() { 7073 if (mDragResizing) { 7074 mDragResizing = false; 7075 synchronized (mWindowCallbacks) { 7076 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7077 mWindowCallbacks.get(i).onWindowDragResizeEnd(); 7078 } 7079 } 7080 mFullRedrawNeeded = true; 7081 } 7082 } 7083 7084 private boolean updateContentDrawBounds() { 7085 boolean updated = false; 7086 synchronized (mWindowCallbacks) { 7087 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7088 updated |= mWindowCallbacks.get(i).onContentDrawn( 7089 mWindowAttributes.surfaceInsets.left, 7090 mWindowAttributes.surfaceInsets.top, 7091 mWidth, mHeight); 7092 } 7093 } 7094 return updated | (mDragResizing && mReportNextDraw); 7095 } 7096 7097 private void requestDrawWindow() { 7098 if (mReportNextDraw) { 7099 mWindowDrawCountDown = new CountDownLatch(mWindowCallbacks.size()); 7100 } 7101 synchronized (mWindowCallbacks) { 7102 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7103 mWindowCallbacks.get(i).onRequestDraw(mReportNextDraw); 7104 } 7105 } 7106 } 7107 7108 /** 7109 * Tells this instance that its corresponding activity has just relaunched. In this case, we 7110 * need to force a relayout of the window to make sure we get the correct bounds from window 7111 * manager. 7112 */ 7113 public void reportActivityRelaunched() { 7114 mActivityRelaunched = true; 7115 } 7116 7117 /** 7118 * Class for managing the accessibility interaction connection 7119 * based on the global accessibility state. 7120 */ 7121 final class AccessibilityInteractionConnectionManager 7122 implements AccessibilityStateChangeListener { 7123 @Override 7124 public void onAccessibilityStateChanged(boolean enabled) { 7125 if (enabled) { 7126 ensureConnection(); 7127 if (mAttachInfo.mHasWindowFocus) { 7128 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 7129 View focusedView = mView.findFocus(); 7130 if (focusedView != null && focusedView != mView) { 7131 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 7132 } 7133 } 7134 } else { 7135 ensureNoConnection(); 7136 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 7137 } 7138 } 7139 7140 public void ensureConnection() { 7141 final boolean registered = 7142 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7143 if (!registered) { 7144 mAttachInfo.mAccessibilityWindowId = 7145 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 7146 new AccessibilityInteractionConnection(ViewRootImpl.this)); 7147 } 7148 } 7149 7150 public void ensureNoConnection() { 7151 final boolean registered = 7152 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7153 if (registered) { 7154 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7155 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 7156 } 7157 } 7158 } 7159 7160 final class HighContrastTextManager implements HighTextContrastChangeListener { 7161 HighContrastTextManager() { 7162 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 7163 } 7164 @Override 7165 public void onHighTextContrastStateChanged(boolean enabled) { 7166 mAttachInfo.mHighContrastText = enabled; 7167 7168 // Destroy Displaylists so they can be recreated with high contrast recordings 7169 destroyHardwareResources(); 7170 7171 // Schedule redraw, which will rerecord + redraw all text 7172 invalidate(); 7173 } 7174 } 7175 7176 /** 7177 * This class is an interface this ViewAncestor provides to the 7178 * AccessibilityManagerService to the latter can interact with 7179 * the view hierarchy in this ViewAncestor. 7180 */ 7181 static final class AccessibilityInteractionConnection 7182 extends IAccessibilityInteractionConnection.Stub { 7183 private final WeakReference<ViewRootImpl> mViewRootImpl; 7184 7185 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 7186 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 7187 } 7188 7189 @Override 7190 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 7191 Region interactiveRegion, int interactionId, 7192 IAccessibilityInteractionConnectionCallback callback, int flags, 7193 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7194 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7195 if (viewRootImpl != null && viewRootImpl.mView != null) { 7196 viewRootImpl.getAccessibilityInteractionController() 7197 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 7198 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7199 interrogatingTid, spec); 7200 } else { 7201 // We cannot make the call and notify the caller so it does not wait. 7202 try { 7203 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7204 } catch (RemoteException re) { 7205 /* best effort - ignore */ 7206 } 7207 } 7208 } 7209 7210 @Override 7211 public void performAccessibilityAction(long accessibilityNodeId, int action, 7212 Bundle arguments, int interactionId, 7213 IAccessibilityInteractionConnectionCallback callback, int flags, 7214 int interrogatingPid, long interrogatingTid) { 7215 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7216 if (viewRootImpl != null && viewRootImpl.mView != null) { 7217 viewRootImpl.getAccessibilityInteractionController() 7218 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 7219 interactionId, callback, flags, interrogatingPid, interrogatingTid); 7220 } else { 7221 // We cannot make the call and notify the caller so it does not wait. 7222 try { 7223 callback.setPerformAccessibilityActionResult(false, interactionId); 7224 } catch (RemoteException re) { 7225 /* best effort - ignore */ 7226 } 7227 } 7228 } 7229 7230 @Override 7231 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 7232 String viewId, Region interactiveRegion, int interactionId, 7233 IAccessibilityInteractionConnectionCallback callback, int flags, 7234 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7235 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7236 if (viewRootImpl != null && viewRootImpl.mView != null) { 7237 viewRootImpl.getAccessibilityInteractionController() 7238 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 7239 viewId, interactiveRegion, interactionId, callback, flags, 7240 interrogatingPid, interrogatingTid, spec); 7241 } else { 7242 // We cannot make the call and notify the caller so it does not wait. 7243 try { 7244 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7245 } catch (RemoteException re) { 7246 /* best effort - ignore */ 7247 } 7248 } 7249 } 7250 7251 @Override 7252 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 7253 Region interactiveRegion, int interactionId, 7254 IAccessibilityInteractionConnectionCallback callback, int flags, 7255 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7256 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7257 if (viewRootImpl != null && viewRootImpl.mView != null) { 7258 viewRootImpl.getAccessibilityInteractionController() 7259 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 7260 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7261 interrogatingTid, spec); 7262 } else { 7263 // We cannot make the call and notify the caller so it does not wait. 7264 try { 7265 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7266 } catch (RemoteException re) { 7267 /* best effort - ignore */ 7268 } 7269 } 7270 } 7271 7272 @Override 7273 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 7274 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7275 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7276 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7277 if (viewRootImpl != null && viewRootImpl.mView != null) { 7278 viewRootImpl.getAccessibilityInteractionController() 7279 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 7280 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7281 spec); 7282 } else { 7283 // We cannot make the call and notify the caller so it does not wait. 7284 try { 7285 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7286 } catch (RemoteException re) { 7287 /* best effort - ignore */ 7288 } 7289 } 7290 } 7291 7292 @Override 7293 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 7294 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7295 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7296 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7297 if (viewRootImpl != null && viewRootImpl.mView != null) { 7298 viewRootImpl.getAccessibilityInteractionController() 7299 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 7300 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7301 spec); 7302 } else { 7303 // We cannot make the call and notify the caller so it does not wait. 7304 try { 7305 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7306 } catch (RemoteException re) { 7307 /* best effort - ignore */ 7308 } 7309 } 7310 } 7311 } 7312 7313 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 7314 private int mChangeTypes = 0; 7315 7316 public View mSource; 7317 public long mLastEventTimeMillis; 7318 7319 @Override 7320 public void run() { 7321 // The accessibility may be turned off while we were waiting so check again. 7322 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 7323 mLastEventTimeMillis = SystemClock.uptimeMillis(); 7324 AccessibilityEvent event = AccessibilityEvent.obtain(); 7325 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 7326 event.setContentChangeTypes(mChangeTypes); 7327 mSource.sendAccessibilityEventUnchecked(event); 7328 } else { 7329 mLastEventTimeMillis = 0; 7330 } 7331 // In any case reset to initial state. 7332 mSource.resetSubtreeAccessibilityStateChanged(); 7333 mSource = null; 7334 mChangeTypes = 0; 7335 } 7336 7337 public void runOrPost(View source, int changeType) { 7338 if (mSource != null) { 7339 // If there is no common predecessor, then mSource points to 7340 // a removed view, hence in this case always prefer the source. 7341 View predecessor = getCommonPredecessor(mSource, source); 7342 mSource = (predecessor != null) ? predecessor : source; 7343 mChangeTypes |= changeType; 7344 return; 7345 } 7346 mSource = source; 7347 mChangeTypes = changeType; 7348 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 7349 final long minEventIntevalMillis = 7350 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 7351 if (timeSinceLastMillis >= minEventIntevalMillis) { 7352 mSource.removeCallbacks(this); 7353 run(); 7354 } else { 7355 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 7356 } 7357 } 7358 } 7359} 7360