ViewRootImpl.java revision c39c7b0ce2b80fbadfd58245c106cc513b83eac2
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import static android.view.WindowCallbacks.RESIZE_MODE_DOCKED_DIVIDER; 20import static android.view.WindowCallbacks.RESIZE_MODE_FREEFORM; 21import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY; 22import static android.view.WindowManager.LayoutParams.TYPE_DOCK_DIVIDER; 23import static android.view.WindowManager.LayoutParams.TYPE_INPUT_METHOD; 24import static android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL; 25import static android.view.WindowManager.LayoutParams.TYPE_VOLUME_OVERLAY; 26 27import android.Manifest; 28import android.animation.LayoutTransition; 29import android.app.ActivityManagerNative; 30import android.content.ClipDescription; 31import android.content.ComponentCallbacks; 32import android.content.Context; 33import android.content.pm.PackageManager; 34import android.content.res.CompatibilityInfo; 35import android.content.res.Configuration; 36import android.content.res.Resources; 37import android.graphics.Canvas; 38import android.graphics.Matrix; 39import android.graphics.PixelFormat; 40import android.graphics.Point; 41import android.graphics.PointF; 42import android.graphics.PorterDuff; 43import android.graphics.Rect; 44import android.graphics.Region; 45import android.graphics.drawable.Drawable; 46import android.hardware.display.DisplayManager; 47import android.hardware.display.DisplayManager.DisplayListener; 48import android.hardware.input.InputManager; 49import android.media.AudioManager; 50import android.os.Binder; 51import android.os.Build; 52import android.os.Bundle; 53import android.os.Debug; 54import android.os.Handler; 55import android.os.Looper; 56import android.os.Message; 57import android.os.ParcelFileDescriptor; 58import android.os.Process; 59import android.os.RemoteException; 60import android.os.SystemClock; 61import android.os.SystemProperties; 62import android.os.Trace; 63import android.util.AndroidRuntimeException; 64import android.util.DisplayMetrics; 65import android.util.Log; 66import android.util.Slog; 67import android.util.TimeUtils; 68import android.util.TypedValue; 69import android.view.Surface.OutOfResourcesException; 70import android.view.View.AttachInfo; 71import android.view.View.MeasureSpec; 72import android.view.accessibility.AccessibilityEvent; 73import android.view.accessibility.AccessibilityManager; 74import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 75import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 76import android.view.accessibility.AccessibilityNodeInfo; 77import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction; 78import android.view.accessibility.AccessibilityNodeProvider; 79import android.view.accessibility.IAccessibilityInteractionConnection; 80import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 81import android.view.animation.AccelerateDecelerateInterpolator; 82import android.view.animation.Interpolator; 83import android.view.inputmethod.InputConnection; 84import android.view.inputmethod.InputMethodManager; 85import android.widget.Scroller; 86 87import com.android.internal.R; 88import com.android.internal.os.IResultReceiver; 89import com.android.internal.os.SomeArgs; 90import com.android.internal.policy.PhoneFallbackEventHandler; 91import com.android.internal.view.BaseSurfaceHolder; 92import com.android.internal.view.RootViewSurfaceTaker; 93 94import java.io.FileDescriptor; 95import java.io.IOException; 96import java.io.OutputStream; 97import java.io.PrintWriter; 98import java.lang.ref.WeakReference; 99import java.util.ArrayList; 100import java.util.HashSet; 101import java.util.concurrent.CountDownLatch; 102 103/** 104 * The top of a view hierarchy, implementing the needed protocol between View 105 * and the WindowManager. This is for the most part an internal implementation 106 * detail of {@link WindowManagerGlobal}. 107 * 108 * {@hide} 109 */ 110@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 111public final class ViewRootImpl implements ViewParent, 112 View.AttachInfo.Callbacks, ThreadedRenderer.HardwareDrawCallbacks { 113 private static final String TAG = "ViewRootImpl"; 114 private static final boolean DBG = false; 115 private static final boolean LOCAL_LOGV = false; 116 /** @noinspection PointlessBooleanExpression*/ 117 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 118 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 119 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 120 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 121 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 122 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 123 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 124 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 125 private static final boolean DEBUG_FPS = false; 126 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 127 128 /** 129 * Set to false if we do not want to use the multi threaded renderer. Note that by disabling 130 * this, WindowCallbacks will not fire. 131 */ 132 private static final boolean USE_MT_RENDERER = true; 133 134 /** 135 * Set this system property to true to force the view hierarchy to render 136 * at 60 Hz. This can be used to measure the potential framerate. 137 */ 138 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 139 140 // properties used by emulator to determine display shape 141 public static final String PROPERTY_EMULATOR_WIN_OUTSET_BOTTOM_PX = 142 "ro.emu.win_outset_bottom_px"; 143 144 /** 145 * Maximum time we allow the user to roll the trackball enough to generate 146 * a key event, before resetting the counters. 147 */ 148 static final int MAX_TRACKBALL_DELAY = 250; 149 150 static final ThreadLocal<HandlerActionQueue> sRunQueues = new ThreadLocal<HandlerActionQueue>(); 151 152 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList(); 153 static boolean sFirstDrawComplete = false; 154 155 static final ArrayList<ComponentCallbacks> sConfigCallbacks = new ArrayList(); 156 157 final ArrayList<WindowCallbacks> mWindowCallbacks = new ArrayList(); 158 final Context mContext; 159 final IWindowSession mWindowSession; 160 final Display mDisplay; 161 final DisplayManager mDisplayManager; 162 final String mBasePackageName; 163 164 final int[] mTmpLocation = new int[2]; 165 166 final TypedValue mTmpValue = new TypedValue(); 167 168 final Thread mThread; 169 170 final WindowLeaked mLocation; 171 172 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 173 174 final W mWindow; 175 176 final int mTargetSdkVersion; 177 178 int mSeq; 179 180 View mView; 181 182 View mAccessibilityFocusedHost; 183 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 184 185 // The view which captures mouse input, or null when no one is capturing. 186 View mCapturingView; 187 188 int mViewVisibility; 189 boolean mAppVisible = true; 190 // For recents to freeform transition we need to keep drawing after the app receives information 191 // that it became invisible. This will ignore that information and depend on the decor view 192 // visibility to control drawing. The decor view visibility will get adjusted when the app get 193 // stopped and that's when the app will stop drawing further frames. 194 private boolean mForceDecorViewVisibility = false; 195 int mOrigWindowType = -1; 196 197 /** Whether the window had focus during the most recent traversal. */ 198 boolean mHadWindowFocus; 199 200 /** 201 * Whether the window lost focus during a previous traversal and has not 202 * yet gained it back. Used to determine whether a WINDOW_STATE_CHANGE 203 * accessibility events should be sent during traversal. 204 */ 205 boolean mLostWindowFocus; 206 207 // Set to true if the owner of this window is in the stopped state, 208 // so the window should no longer be active. 209 boolean mStopped = false; 210 211 // Set to true if the owner of this window is in ambient mode, 212 // which means it won't receive input events. 213 boolean mIsAmbientMode = false; 214 215 // Set to true to stop input during an Activity Transition. 216 boolean mPausedForTransition = false; 217 218 boolean mLastInCompatMode = false; 219 220 SurfaceHolder.Callback2 mSurfaceHolderCallback; 221 BaseSurfaceHolder mSurfaceHolder; 222 boolean mIsCreating; 223 boolean mDrawingAllowed; 224 225 final Region mTransparentRegion; 226 final Region mPreviousTransparentRegion; 227 228 int mWidth; 229 int mHeight; 230 Rect mDirty; 231 boolean mIsAnimating; 232 233 private boolean mDragResizing; 234 private boolean mInvalidateRootRequested; 235 private int mResizeMode; 236 private int mCanvasOffsetX; 237 private int mCanvasOffsetY; 238 private boolean mActivityRelaunched; 239 240 CompatibilityInfo.Translator mTranslator; 241 242 final View.AttachInfo mAttachInfo; 243 InputChannel mInputChannel; 244 InputQueue.Callback mInputQueueCallback; 245 InputQueue mInputQueue; 246 FallbackEventHandler mFallbackEventHandler; 247 Choreographer mChoreographer; 248 249 final Rect mTempRect; // used in the transaction to not thrash the heap. 250 final Rect mVisRect; // used to retrieve visible rect of focused view. 251 252 boolean mTraversalScheduled; 253 int mTraversalBarrier; 254 boolean mWillDrawSoon; 255 /** Set to true while in performTraversals for detecting when die(true) is called from internal 256 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 257 boolean mIsInTraversal; 258 boolean mApplyInsetsRequested; 259 boolean mLayoutRequested; 260 boolean mFirst; 261 boolean mReportNextDraw; 262 boolean mFullRedrawNeeded; 263 boolean mNewSurfaceNeeded; 264 boolean mHasHadWindowFocus; 265 boolean mLastWasImTarget; 266 boolean mForceNextWindowRelayout; 267 CountDownLatch mWindowDrawCountDown; 268 269 boolean mIsDrawing; 270 int mLastSystemUiVisibility; 271 int mClientWindowLayoutFlags; 272 boolean mLastOverscanRequested; 273 274 // Pool of queued input events. 275 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 276 private QueuedInputEvent mQueuedInputEventPool; 277 private int mQueuedInputEventPoolSize; 278 279 /* Input event queue. 280 * Pending input events are input events waiting to be delivered to the input stages 281 * and handled by the application. 282 */ 283 QueuedInputEvent mPendingInputEventHead; 284 QueuedInputEvent mPendingInputEventTail; 285 int mPendingInputEventCount; 286 boolean mProcessInputEventsScheduled; 287 boolean mUnbufferedInputDispatch; 288 String mPendingInputEventQueueLengthCounterName = "pq"; 289 290 InputStage mFirstInputStage; 291 InputStage mFirstPostImeInputStage; 292 InputStage mSyntheticInputStage; 293 294 boolean mWindowAttributesChanged = false; 295 int mWindowAttributesChangesFlag = 0; 296 297 // These can be accessed by any thread, must be protected with a lock. 298 // Surface can never be reassigned or cleared (use Surface.clear()). 299 final Surface mSurface = new Surface(); 300 301 boolean mAdded; 302 boolean mAddedTouchMode; 303 304 final DisplayAdjustments mDisplayAdjustments; 305 306 // These are accessed by multiple threads. 307 final Rect mWinFrame; // frame given by window manager. 308 309 final Rect mPendingOverscanInsets = new Rect(); 310 final Rect mPendingVisibleInsets = new Rect(); 311 final Rect mPendingStableInsets = new Rect(); 312 final Rect mPendingContentInsets = new Rect(); 313 final Rect mPendingOutsets = new Rect(); 314 final Rect mPendingBackDropFrame = new Rect(); 315 boolean mPendingAlwaysConsumeNavBar; 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 mAttachInfo.mAlwaysConsumeNavBar = 627 (res & WindowManagerGlobal.ADD_FLAG_ALWAYS_CONSUME_NAV_BAR) != 0; 628 mPendingAlwaysConsumeNavBar = mAttachInfo.mAlwaysConsumeNavBar; 629 if (DEBUG_LAYOUT) Log.v(mTag, "Added window " + mWindow); 630 if (res < WindowManagerGlobal.ADD_OKAY) { 631 mAttachInfo.mRootView = null; 632 mAdded = false; 633 mFallbackEventHandler.setView(null); 634 unscheduleTraversals(); 635 setAccessibilityFocus(null, null); 636 switch (res) { 637 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 638 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 639 throw new WindowManager.BadTokenException( 640 "Unable to add window -- token " + attrs.token 641 + " is not valid; is your activity running?"); 642 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 643 throw new WindowManager.BadTokenException( 644 "Unable to add window -- token " + attrs.token 645 + " is not for an application"); 646 case WindowManagerGlobal.ADD_APP_EXITING: 647 throw new WindowManager.BadTokenException( 648 "Unable to add window -- app for token " + attrs.token 649 + " is exiting"); 650 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 651 throw new WindowManager.BadTokenException( 652 "Unable to add window -- window " + mWindow 653 + " has already been added"); 654 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 655 // Silently ignore -- we would have just removed it 656 // right away, anyway. 657 return; 658 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 659 throw new WindowManager.BadTokenException("Unable to add window " 660 + mWindow + " -- another window of type " 661 + mWindowAttributes.type + " already exists"); 662 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 663 throw new WindowManager.BadTokenException("Unable to add window " 664 + mWindow + " -- permission denied for window type " 665 + mWindowAttributes.type); 666 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 667 throw new WindowManager.InvalidDisplayException("Unable to add window " 668 + mWindow + " -- the specified display can not be found"); 669 case WindowManagerGlobal.ADD_INVALID_TYPE: 670 throw new WindowManager.InvalidDisplayException("Unable to add window " 671 + mWindow + " -- the specified window type " 672 + mWindowAttributes.type + " is not valid"); 673 } 674 throw new RuntimeException( 675 "Unable to add window -- unknown error code " + res); 676 } 677 678 if (view instanceof RootViewSurfaceTaker) { 679 mInputQueueCallback = 680 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 681 } 682 if (mInputChannel != null) { 683 if (mInputQueueCallback != null) { 684 mInputQueue = new InputQueue(); 685 mInputQueueCallback.onInputQueueCreated(mInputQueue); 686 } 687 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 688 Looper.myLooper()); 689 } 690 691 view.assignParent(this); 692 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 693 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 694 695 if (mAccessibilityManager.isEnabled()) { 696 mAccessibilityInteractionConnectionManager.ensureConnection(); 697 } 698 699 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 700 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 701 } 702 703 // Set up the input pipeline. 704 CharSequence counterSuffix = attrs.getTitle(); 705 mSyntheticInputStage = new SyntheticInputStage(); 706 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 707 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 708 "aq:native-post-ime:" + counterSuffix); 709 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 710 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 711 "aq:ime:" + counterSuffix); 712 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 713 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 714 "aq:native-pre-ime:" + counterSuffix); 715 716 mFirstInputStage = nativePreImeStage; 717 mFirstPostImeInputStage = earlyPostImeStage; 718 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 719 } 720 } 721 } 722 723 private void setTag() { 724 final String[] split = mWindowAttributes.getTitle().toString().split("\\."); 725 if (split.length > 0) { 726 mTag = TAG + "[" + split[split.length - 1] + "]"; 727 } 728 } 729 730 /** Whether the window is in local focus mode or not */ 731 private boolean isInLocalFocusMode() { 732 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 733 } 734 735 public int getWindowFlags() { 736 return mWindowAttributes.flags; 737 } 738 739 public int getDisplayId() { 740 return mDisplay.getDisplayId(); 741 } 742 743 public CharSequence getTitle() { 744 return mWindowAttributes.getTitle(); 745 } 746 747 void destroyHardwareResources() { 748 if (mAttachInfo.mHardwareRenderer != null) { 749 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 750 mAttachInfo.mHardwareRenderer.destroy(); 751 } 752 } 753 754 public void detachFunctor(long functor) { 755 if (mAttachInfo.mHardwareRenderer != null) { 756 // Fence so that any pending invokeFunctor() messages will be processed 757 // before we return from detachFunctor. 758 mAttachInfo.mHardwareRenderer.stopDrawing(); 759 } 760 } 761 762 /** 763 * Schedules the functor for execution in either kModeProcess or 764 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 765 * 766 * @param functor The native functor to invoke 767 * @param waitForCompletion If true, this will not return until the functor 768 * has invoked. If false, the functor may be invoked 769 * asynchronously. 770 */ 771 public void invokeFunctor(long functor, boolean waitForCompletion) { 772 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 773 } 774 775 public void registerAnimatingRenderNode(RenderNode animator) { 776 if (mAttachInfo.mHardwareRenderer != null) { 777 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 778 } else { 779 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 780 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 781 } 782 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 783 } 784 } 785 786 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 787 mAttachInfo.mHardwareAccelerated = false; 788 mAttachInfo.mHardwareAccelerationRequested = false; 789 790 // Don't enable hardware acceleration when the application is in compatibility mode 791 if (mTranslator != null) return; 792 793 // Try to enable hardware acceleration if requested 794 final boolean hardwareAccelerated = 795 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 796 797 if (hardwareAccelerated) { 798 if (!ThreadedRenderer.isAvailable()) { 799 return; 800 } 801 802 // Persistent processes (including the system) should not do 803 // accelerated rendering on low-end devices. In that case, 804 // sRendererDisabled will be set. In addition, the system process 805 // itself should never do accelerated rendering. In that case, both 806 // sRendererDisabled and sSystemRendererDisabled are set. When 807 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 808 // can be used by code on the system process to escape that and enable 809 // HW accelerated drawing. (This is basically for the lock screen.) 810 811 final boolean fakeHwAccelerated = (attrs.privateFlags & 812 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 813 final boolean forceHwAccelerated = (attrs.privateFlags & 814 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 815 816 if (fakeHwAccelerated) { 817 // This is exclusively for the preview windows the window manager 818 // shows for launching applications, so they will look more like 819 // the app being launched. 820 mAttachInfo.mHardwareAccelerationRequested = true; 821 } else if (!ThreadedRenderer.sRendererDisabled 822 || (ThreadedRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 823 if (mAttachInfo.mHardwareRenderer != null) { 824 mAttachInfo.mHardwareRenderer.destroy(); 825 } 826 827 final Rect insets = attrs.surfaceInsets; 828 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 829 || insets.top != 0 || insets.bottom != 0; 830 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 831 mAttachInfo.mHardwareRenderer = ThreadedRenderer.create(mContext, translucent); 832 if (mAttachInfo.mHardwareRenderer != null) { 833 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 834 mAttachInfo.mHardwareAccelerated = 835 mAttachInfo.mHardwareAccelerationRequested = true; 836 } 837 } 838 } 839 } 840 841 public View getView() { 842 return mView; 843 } 844 845 final WindowLeaked getLocation() { 846 return mLocation; 847 } 848 849 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 850 synchronized (this) { 851 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 852 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 853 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 854 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 855 final int oldSoftInputMode = mWindowAttributes.softInputMode; 856 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 857 858 // Keep track of the actual window flags supplied by the client. 859 mClientWindowLayoutFlags = attrs.flags; 860 861 // Preserve compatible window flag if exists. 862 final int compatibleWindowFlag = mWindowAttributes.privateFlags 863 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 864 865 // Transfer over system UI visibility values as they carry current state. 866 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 867 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 868 869 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 870 if ((mWindowAttributesChangesFlag 871 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 872 // Recompute system ui visibility. 873 mAttachInfo.mRecomputeGlobalAttributes = true; 874 } 875 if (mWindowAttributes.packageName == null) { 876 mWindowAttributes.packageName = mBasePackageName; 877 } 878 mWindowAttributes.privateFlags |= compatibleWindowFlag; 879 880 // Restore old surface insets. 881 mWindowAttributes.surfaceInsets.set( 882 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 883 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 884 885 applyKeepScreenOnFlag(mWindowAttributes); 886 887 if (newView) { 888 mSoftInputMode = attrs.softInputMode; 889 requestLayout(); 890 } 891 892 // Don't lose the mode we last auto-computed. 893 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 894 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 895 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 896 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 897 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 898 } 899 900 mWindowAttributesChanged = true; 901 scheduleTraversals(); 902 } 903 } 904 905 void handleAppVisibility(boolean visible) { 906 if (mAppVisible != visible) { 907 mAppVisible = visible; 908 scheduleTraversals(); 909 if (!mAppVisible) { 910 WindowManagerGlobal.trimForeground(); 911 } 912 } 913 } 914 915 void handleGetNewSurface() { 916 mNewSurfaceNeeded = true; 917 mFullRedrawNeeded = true; 918 scheduleTraversals(); 919 } 920 921 private final DisplayListener mDisplayListener = new DisplayListener() { 922 @Override 923 public void onDisplayChanged(int displayId) { 924 if (mView != null && mDisplay.getDisplayId() == displayId) { 925 final int oldDisplayState = mAttachInfo.mDisplayState; 926 final int newDisplayState = mDisplay.getState(); 927 if (oldDisplayState != newDisplayState) { 928 mAttachInfo.mDisplayState = newDisplayState; 929 pokeDrawLockIfNeeded(); 930 if (oldDisplayState != Display.STATE_UNKNOWN) { 931 final int oldScreenState = toViewScreenState(oldDisplayState); 932 final int newScreenState = toViewScreenState(newDisplayState); 933 if (oldScreenState != newScreenState) { 934 mView.dispatchScreenStateChanged(newScreenState); 935 } 936 if (oldDisplayState == Display.STATE_OFF) { 937 // Draw was suppressed so we need to for it to happen here. 938 mFullRedrawNeeded = true; 939 scheduleTraversals(); 940 } 941 } 942 } 943 } 944 } 945 946 @Override 947 public void onDisplayRemoved(int displayId) { 948 } 949 950 @Override 951 public void onDisplayAdded(int displayId) { 952 } 953 954 private int toViewScreenState(int displayState) { 955 return displayState == Display.STATE_OFF ? 956 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 957 } 958 }; 959 960 void pokeDrawLockIfNeeded() { 961 final int displayState = mAttachInfo.mDisplayState; 962 if (mView != null && mAdded && mTraversalScheduled 963 && (displayState == Display.STATE_DOZE 964 || displayState == Display.STATE_DOZE_SUSPEND)) { 965 try { 966 mWindowSession.pokeDrawLock(mWindow); 967 } catch (RemoteException ex) { 968 // System server died, oh well. 969 } 970 } 971 } 972 973 @Override 974 public void requestFitSystemWindows() { 975 checkThread(); 976 mApplyInsetsRequested = true; 977 scheduleTraversals(); 978 } 979 980 @Override 981 public void requestLayout() { 982 if (!mHandlingLayoutInLayoutRequest) { 983 checkThread(); 984 mLayoutRequested = true; 985 scheduleTraversals(); 986 } 987 } 988 989 @Override 990 public boolean isLayoutRequested() { 991 return mLayoutRequested; 992 } 993 994 void invalidate() { 995 mDirty.set(0, 0, mWidth, mHeight); 996 if (!mWillDrawSoon) { 997 scheduleTraversals(); 998 } 999 } 1000 1001 void invalidateWorld(View view) { 1002 view.invalidate(); 1003 if (view instanceof ViewGroup) { 1004 ViewGroup parent = (ViewGroup) view; 1005 for (int i = 0; i < parent.getChildCount(); i++) { 1006 invalidateWorld(parent.getChildAt(i)); 1007 } 1008 } 1009 } 1010 1011 @Override 1012 public void invalidateChild(View child, Rect dirty) { 1013 invalidateChildInParent(null, dirty); 1014 } 1015 1016 @Override 1017 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 1018 checkThread(); 1019 if (DEBUG_DRAW) Log.v(mTag, "Invalidate child: " + dirty); 1020 1021 if (dirty == null) { 1022 invalidate(); 1023 return null; 1024 } else if (dirty.isEmpty() && !mIsAnimating) { 1025 return null; 1026 } 1027 1028 if (mCurScrollY != 0 || mTranslator != null) { 1029 mTempRect.set(dirty); 1030 dirty = mTempRect; 1031 if (mCurScrollY != 0) { 1032 dirty.offset(0, -mCurScrollY); 1033 } 1034 if (mTranslator != null) { 1035 mTranslator.translateRectInAppWindowToScreen(dirty); 1036 } 1037 if (mAttachInfo.mScalingRequired) { 1038 dirty.inset(-1, -1); 1039 } 1040 } 1041 1042 invalidateRectOnScreen(dirty); 1043 1044 return null; 1045 } 1046 1047 private void invalidateRectOnScreen(Rect dirty) { 1048 final Rect localDirty = mDirty; 1049 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 1050 mAttachInfo.mSetIgnoreDirtyState = true; 1051 mAttachInfo.mIgnoreDirtyState = true; 1052 } 1053 1054 // Add the new dirty rect to the current one 1055 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 1056 // Intersect with the bounds of the window to skip 1057 // updates that lie outside of the visible region 1058 final float appScale = mAttachInfo.mApplicationScale; 1059 final boolean intersected = localDirty.intersect(0, 0, 1060 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 1061 if (!intersected) { 1062 localDirty.setEmpty(); 1063 } 1064 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 1065 scheduleTraversals(); 1066 } 1067 } 1068 1069 public void setIsAmbientMode(boolean ambient) { 1070 mIsAmbientMode = ambient; 1071 } 1072 1073 void setWindowStopped(boolean stopped) { 1074 if (mStopped != stopped) { 1075 mStopped = stopped; 1076 if (!mStopped) { 1077 scheduleTraversals(); 1078 } else { 1079 if (mAttachInfo.mHardwareRenderer != null) { 1080 if (DEBUG_DRAW) Log.d(mTag, "WindowStopped on " + getTitle()); 1081 mAttachInfo.mHardwareRenderer.updateSurface(null); 1082 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 1083 } 1084 } 1085 } 1086 } 1087 1088 /** 1089 * Block the input events during an Activity Transition. The KEYCODE_BACK event is allowed 1090 * through to allow quick reversal of the Activity Transition. 1091 * 1092 * @param paused true to pause, false to resume. 1093 */ 1094 public void setPausedForTransition(boolean paused) { 1095 mPausedForTransition = paused; 1096 } 1097 1098 @Override 1099 public ViewParent getParent() { 1100 return null; 1101 } 1102 1103 @Override 1104 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 1105 if (child != mView) { 1106 throw new RuntimeException("child is not mine, honest!"); 1107 } 1108 // Note: don't apply scroll offset, because we want to know its 1109 // visibility in the virtual canvas being given to the view hierarchy. 1110 return r.intersect(0, 0, mWidth, mHeight); 1111 } 1112 1113 @Override 1114 public void bringChildToFront(View child) { 1115 } 1116 1117 int getHostVisibility() { 1118 return (mAppVisible || mForceDecorViewVisibility) ? mView.getVisibility() : View.GONE; 1119 } 1120 1121 /** 1122 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1123 * This list will be cleared after the transitions on the list are start()'ed. These 1124 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1125 * happens during the layout phase of traversal, which we want to complete before any of the 1126 * animations are started (because those animations may side-effect properties that layout 1127 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1128 * to the list and it is started just prior to starting the drawing phase of traversal. 1129 * 1130 * @param transition The LayoutTransition to be started on the next traversal. 1131 * 1132 * @hide 1133 */ 1134 public void requestTransitionStart(LayoutTransition transition) { 1135 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1136 if (mPendingTransitions == null) { 1137 mPendingTransitions = new ArrayList<LayoutTransition>(); 1138 } 1139 mPendingTransitions.add(transition); 1140 } 1141 } 1142 1143 /** 1144 * Notifies the HardwareRenderer that a new frame will be coming soon. 1145 * Currently only {@link ThreadedRenderer} cares about this, and uses 1146 * this knowledge to adjust the scheduling of off-thread animations 1147 */ 1148 void notifyRendererOfFramePending() { 1149 if (mAttachInfo.mHardwareRenderer != null) { 1150 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1151 } 1152 } 1153 1154 void scheduleTraversals() { 1155 if (!mTraversalScheduled) { 1156 mTraversalScheduled = true; 1157 mTraversalBarrier = mHandler.getLooper().getQueue().postSyncBarrier(); 1158 mChoreographer.postCallback( 1159 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1160 if (!mUnbufferedInputDispatch) { 1161 scheduleConsumeBatchedInput(); 1162 } 1163 notifyRendererOfFramePending(); 1164 pokeDrawLockIfNeeded(); 1165 } 1166 } 1167 1168 void unscheduleTraversals() { 1169 if (mTraversalScheduled) { 1170 mTraversalScheduled = false; 1171 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1172 mChoreographer.removeCallbacks( 1173 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1174 } 1175 } 1176 1177 void doTraversal() { 1178 if (mTraversalScheduled) { 1179 mTraversalScheduled = false; 1180 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1181 1182 if (mProfile) { 1183 Debug.startMethodTracing("ViewAncestor"); 1184 } 1185 1186 performTraversals(); 1187 1188 if (mProfile) { 1189 Debug.stopMethodTracing(); 1190 mProfile = false; 1191 } 1192 } 1193 } 1194 1195 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1196 // Update window's global keep screen on flag: if a view has requested 1197 // that the screen be kept on, then it is always set; otherwise, it is 1198 // set to whatever the client last requested for the global state. 1199 if (mAttachInfo.mKeepScreenOn) { 1200 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1201 } else { 1202 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1203 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1204 } 1205 } 1206 1207 private boolean collectViewAttributes() { 1208 if (mAttachInfo.mRecomputeGlobalAttributes) { 1209 //Log.i(mTag, "Computing view hierarchy attributes!"); 1210 mAttachInfo.mRecomputeGlobalAttributes = false; 1211 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1212 mAttachInfo.mKeepScreenOn = false; 1213 mAttachInfo.mSystemUiVisibility = 0; 1214 mAttachInfo.mHasSystemUiListeners = false; 1215 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1216 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1217 WindowManager.LayoutParams params = mWindowAttributes; 1218 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1219 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1220 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1221 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1222 applyKeepScreenOnFlag(params); 1223 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1224 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1225 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1226 return true; 1227 } 1228 } 1229 return false; 1230 } 1231 1232 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1233 int vis = 0; 1234 // Translucent decor window flags imply stable system ui visibility. 1235 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1236 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1237 } 1238 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1239 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1240 } 1241 return vis; 1242 } 1243 1244 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1245 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1246 int childWidthMeasureSpec; 1247 int childHeightMeasureSpec; 1248 boolean windowSizeMayChange = false; 1249 1250 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(mTag, 1251 "Measuring " + host + " in display " + desiredWindowWidth 1252 + "x" + desiredWindowHeight + "..."); 1253 1254 boolean goodMeasure = false; 1255 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1256 // On large screens, we don't want to allow dialogs to just 1257 // stretch to fill the entire width of the screen to display 1258 // one line of text. First try doing the layout at a smaller 1259 // size to see if it will fit. 1260 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1261 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1262 int baseSize = 0; 1263 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1264 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1265 } 1266 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": baseSize=" + baseSize 1267 + ", desiredWindowWidth=" + desiredWindowWidth); 1268 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1269 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1270 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1271 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1272 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1273 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() 1274 + ") from width spec: " + MeasureSpec.toString(childWidthMeasureSpec) 1275 + " and height spec: " + MeasureSpec.toString(childHeightMeasureSpec)); 1276 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1277 goodMeasure = true; 1278 } else { 1279 // Didn't fit in that size... try expanding a bit. 1280 baseSize = (baseSize+desiredWindowWidth)/2; 1281 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": next baseSize=" 1282 + baseSize); 1283 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1284 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1285 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1286 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1287 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1288 if (DEBUG_DIALOG) Log.v(mTag, "Good!"); 1289 goodMeasure = true; 1290 } 1291 } 1292 } 1293 } 1294 1295 if (!goodMeasure) { 1296 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1297 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1298 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1299 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1300 windowSizeMayChange = true; 1301 } 1302 } 1303 1304 if (DBG) { 1305 System.out.println("======================================"); 1306 System.out.println("performTraversals -- after measure"); 1307 host.debug(); 1308 } 1309 1310 return windowSizeMayChange; 1311 } 1312 1313 /** 1314 * Modifies the input matrix such that it maps view-local coordinates to 1315 * on-screen coordinates. 1316 * 1317 * @param m input matrix to modify 1318 */ 1319 void transformMatrixToGlobal(Matrix m) { 1320 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1321 } 1322 1323 /** 1324 * Modifies the input matrix such that it maps on-screen coordinates to 1325 * view-local coordinates. 1326 * 1327 * @param m input matrix to modify 1328 */ 1329 void transformMatrixToLocal(Matrix m) { 1330 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1331 } 1332 1333 /* package */ WindowInsets getWindowInsets(boolean forceConstruct) { 1334 if (mLastWindowInsets == null || forceConstruct) { 1335 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1336 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1337 Rect contentInsets = mDispatchContentInsets; 1338 Rect stableInsets = mDispatchStableInsets; 1339 // For dispatch we preserve old logic, but for direct requests from Views we allow to 1340 // immediately use pending insets. 1341 if (!forceConstruct 1342 && (!mPendingContentInsets.equals(contentInsets) || 1343 !mPendingStableInsets.equals(stableInsets))) { 1344 contentInsets = mPendingContentInsets; 1345 stableInsets = mPendingStableInsets; 1346 } 1347 Rect outsets = mAttachInfo.mOutsets; 1348 if (outsets.left > 0 || outsets.top > 0 || outsets.right > 0 || outsets.bottom > 0) { 1349 contentInsets = new Rect(contentInsets.left + outsets.left, 1350 contentInsets.top + outsets.top, contentInsets.right + outsets.right, 1351 contentInsets.bottom + outsets.bottom); 1352 } 1353 mLastWindowInsets = new WindowInsets(contentInsets, 1354 null /* windowDecorInsets */, stableInsets, 1355 mContext.getResources().getConfiguration().isScreenRound(), 1356 mAttachInfo.mAlwaysConsumeNavBar); 1357 } 1358 return mLastWindowInsets; 1359 } 1360 1361 void dispatchApplyInsets(View host) { 1362 host.dispatchApplyWindowInsets(getWindowInsets(true /* forceConstruct */)); 1363 } 1364 1365 private static boolean shouldUseDisplaySize(final WindowManager.LayoutParams lp) { 1366 return lp.type == TYPE_STATUS_BAR_PANEL 1367 || lp.type == TYPE_INPUT_METHOD 1368 || lp.type == TYPE_VOLUME_OVERLAY; 1369 } 1370 1371 private int dipToPx(int dip) { 1372 final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics(); 1373 return (int) (displayMetrics.density * dip + 0.5f); 1374 } 1375 1376 private void performTraversals() { 1377 // cache mView since it is used so much below... 1378 final View host = mView; 1379 1380 if (DBG) { 1381 System.out.println("======================================"); 1382 System.out.println("performTraversals"); 1383 host.debug(); 1384 } 1385 1386 if (host == null || !mAdded) 1387 return; 1388 1389 mIsInTraversal = true; 1390 mWillDrawSoon = true; 1391 boolean windowSizeMayChange = false; 1392 boolean newSurface = false; 1393 boolean surfaceChanged = false; 1394 WindowManager.LayoutParams lp = mWindowAttributes; 1395 1396 int desiredWindowWidth; 1397 int desiredWindowHeight; 1398 1399 final int viewVisibility = getHostVisibility(); 1400 final boolean viewVisibilityChanged = !mFirst 1401 && (mViewVisibility != viewVisibility || mNewSurfaceNeeded); 1402 1403 WindowManager.LayoutParams params = null; 1404 if (mWindowAttributesChanged) { 1405 mWindowAttributesChanged = false; 1406 surfaceChanged = true; 1407 params = lp; 1408 } 1409 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1410 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1411 params = lp; 1412 mFullRedrawNeeded = true; 1413 mLayoutRequested = true; 1414 if (mLastInCompatMode) { 1415 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1416 mLastInCompatMode = false; 1417 } else { 1418 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1419 mLastInCompatMode = true; 1420 } 1421 } 1422 1423 mWindowAttributesChangesFlag = 0; 1424 1425 Rect frame = mWinFrame; 1426 if (mFirst) { 1427 mFullRedrawNeeded = true; 1428 mLayoutRequested = true; 1429 1430 if (shouldUseDisplaySize(lp)) { 1431 // NOTE -- system code, won't try to do compat mode. 1432 Point size = new Point(); 1433 mDisplay.getRealSize(size); 1434 desiredWindowWidth = size.x; 1435 desiredWindowHeight = size.y; 1436 } else { 1437 Configuration config = mContext.getResources().getConfiguration(); 1438 desiredWindowWidth = dipToPx(config.screenWidthDp); 1439 desiredWindowHeight = dipToPx(config.screenHeightDp); 1440 } 1441 1442 // We used to use the following condition to choose 32 bits drawing caches: 1443 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1444 // However, windows are now always 32 bits by default, so choose 32 bits 1445 mAttachInfo.mUse32BitDrawingCache = true; 1446 mAttachInfo.mHasWindowFocus = false; 1447 mAttachInfo.mWindowVisibility = viewVisibility; 1448 mAttachInfo.mRecomputeGlobalAttributes = false; 1449 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1450 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1451 // Set the layout direction if it has not been set before (inherit is the default) 1452 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1453 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1454 } 1455 host.dispatchAttachedToWindow(mAttachInfo, 0); 1456 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1457 dispatchApplyInsets(host); 1458 //Log.i(mTag, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1459 1460 } else { 1461 desiredWindowWidth = frame.width(); 1462 desiredWindowHeight = frame.height(); 1463 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1464 if (DEBUG_ORIENTATION) Log.v(mTag, "View " + host + " resized to: " + frame); 1465 mFullRedrawNeeded = true; 1466 mLayoutRequested = true; 1467 windowSizeMayChange = true; 1468 } 1469 } 1470 1471 if (viewVisibilityChanged) { 1472 mAttachInfo.mWindowVisibility = viewVisibility; 1473 host.dispatchWindowVisibilityChanged(viewVisibility); 1474 host.dispatchVisibilityAggregated(viewVisibility == View.VISIBLE); 1475 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1476 endDragResizing(); 1477 destroyHardwareResources(); 1478 } 1479 if (viewVisibility == View.GONE) { 1480 // After making a window gone, we will count it as being 1481 // shown for the first time the next time it gets focus. 1482 mHasHadWindowFocus = false; 1483 } 1484 } 1485 1486 // Non-visible windows can't hold accessibility focus. 1487 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1488 host.clearAccessibilityFocus(); 1489 } 1490 1491 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1492 getRunQueue().executeActions(mAttachInfo.mHandler); 1493 1494 boolean insetsChanged = false; 1495 1496 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1497 if (layoutRequested) { 1498 1499 final Resources res = mView.getContext().getResources(); 1500 1501 if (mFirst) { 1502 // make sure touch mode code executes by setting cached value 1503 // to opposite of the added touch mode. 1504 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1505 ensureTouchModeLocally(mAddedTouchMode); 1506 } else { 1507 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1508 insetsChanged = true; 1509 } 1510 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1511 insetsChanged = true; 1512 } 1513 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1514 insetsChanged = true; 1515 } 1516 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1517 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1518 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1519 + mAttachInfo.mVisibleInsets); 1520 } 1521 if (!mPendingOutsets.equals(mAttachInfo.mOutsets)) { 1522 insetsChanged = true; 1523 } 1524 if (mPendingAlwaysConsumeNavBar != mAttachInfo.mAlwaysConsumeNavBar) { 1525 insetsChanged = true; 1526 } 1527 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1528 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1529 windowSizeMayChange = true; 1530 1531 if (shouldUseDisplaySize(lp)) { 1532 // NOTE -- system code, won't try to do compat mode. 1533 Point size = new Point(); 1534 mDisplay.getRealSize(size); 1535 desiredWindowWidth = size.x; 1536 desiredWindowHeight = size.y; 1537 } else { 1538 Configuration config = res.getConfiguration(); 1539 desiredWindowWidth = dipToPx(config.screenWidthDp); 1540 desiredWindowHeight = dipToPx(config.screenHeightDp); 1541 } 1542 } 1543 } 1544 1545 // Ask host how big it wants to be 1546 windowSizeMayChange |= measureHierarchy(host, lp, res, 1547 desiredWindowWidth, desiredWindowHeight); 1548 } 1549 1550 if (collectViewAttributes()) { 1551 params = lp; 1552 } 1553 if (mAttachInfo.mForceReportNewAttributes) { 1554 mAttachInfo.mForceReportNewAttributes = false; 1555 params = lp; 1556 } 1557 1558 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1559 mAttachInfo.mViewVisibilityChanged = false; 1560 int resizeMode = mSoftInputMode & 1561 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1562 // If we are in auto resize mode, then we need to determine 1563 // what mode to use now. 1564 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1565 final int N = mAttachInfo.mScrollContainers.size(); 1566 for (int i=0; i<N; i++) { 1567 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1568 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1569 } 1570 } 1571 if (resizeMode == 0) { 1572 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1573 } 1574 if ((lp.softInputMode & 1575 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1576 lp.softInputMode = (lp.softInputMode & 1577 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1578 resizeMode; 1579 params = lp; 1580 } 1581 } 1582 } 1583 1584 if (params != null) { 1585 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1586 if (!PixelFormat.formatHasAlpha(params.format)) { 1587 params.format = PixelFormat.TRANSLUCENT; 1588 } 1589 } 1590 mAttachInfo.mOverscanRequested = (params.flags 1591 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1592 } 1593 1594 if (mApplyInsetsRequested) { 1595 mApplyInsetsRequested = false; 1596 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1597 dispatchApplyInsets(host); 1598 if (mLayoutRequested) { 1599 // Short-circuit catching a new layout request here, so 1600 // we don't need to go through two layout passes when things 1601 // change due to fitting system windows, which can happen a lot. 1602 windowSizeMayChange |= measureHierarchy(host, lp, 1603 mView.getContext().getResources(), 1604 desiredWindowWidth, desiredWindowHeight); 1605 } 1606 } 1607 1608 if (layoutRequested) { 1609 // Clear this now, so that if anything requests a layout in the 1610 // rest of this function we will catch it and re-run a full 1611 // layout pass. 1612 mLayoutRequested = false; 1613 } 1614 1615 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1616 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1617 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1618 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1619 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1620 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1621 windowShouldResize |= mDragResizing && mResizeMode == RESIZE_MODE_FREEFORM; 1622 1623 // If the activity was just relaunched, it might have unfrozen the task bounds (while 1624 // relaunching), so we need to force a call into window manager to pick up the latest 1625 // bounds. 1626 windowShouldResize |= mActivityRelaunched; 1627 1628 // Determine whether to compute insets. 1629 // If there are no inset listeners remaining then we may still need to compute 1630 // insets in case the old insets were non-empty and must be reset. 1631 final boolean computesInternalInsets = 1632 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1633 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1634 1635 boolean insetsPending = false; 1636 int relayoutResult = 0; 1637 1638 final boolean isViewVisible = viewVisibility == View.VISIBLE; 1639 if (mFirst || windowShouldResize || insetsChanged || 1640 viewVisibilityChanged || params != null || mForceNextWindowRelayout) { 1641 mForceNextWindowRelayout = false; 1642 1643 if (isViewVisible) { 1644 // If this window is giving internal insets to the window 1645 // manager, and it is being added or changing its visibility, 1646 // then we want to first give the window manager "fake" 1647 // insets to cause it to effectively ignore the content of 1648 // the window during layout. This avoids it briefly causing 1649 // other windows to resize/move based on the raw frame of the 1650 // window, waiting until we can finish laying out this window 1651 // and get back to the window manager with the ultimately 1652 // computed insets. 1653 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1654 } 1655 1656 if (mSurfaceHolder != null) { 1657 mSurfaceHolder.mSurfaceLock.lock(); 1658 mDrawingAllowed = true; 1659 } 1660 1661 boolean hwInitialized = false; 1662 boolean contentInsetsChanged = false; 1663 boolean hadSurface = mSurface.isValid(); 1664 1665 try { 1666 if (DEBUG_LAYOUT) { 1667 Log.i(mTag, "host=w:" + host.getMeasuredWidth() + ", h:" + 1668 host.getMeasuredHeight() + ", params=" + params); 1669 } 1670 1671 if (mAttachInfo.mHardwareRenderer != null) { 1672 // relayoutWindow may decide to destroy mSurface. As that decision 1673 // happens in WindowManager service, we need to be defensive here 1674 // and stop using the surface in case it gets destroyed. 1675 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1676 // Animations were running so we need to push a frame 1677 // to resume them 1678 mDirty.set(0, 0, mWidth, mHeight); 1679 } 1680 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1681 } 1682 final int surfaceGenerationId = mSurface.getGenerationId(); 1683 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1684 1685 if (DEBUG_LAYOUT) Log.v(mTag, "relayout: frame=" + frame.toShortString() 1686 + " overscan=" + mPendingOverscanInsets.toShortString() 1687 + " content=" + mPendingContentInsets.toShortString() 1688 + " visible=" + mPendingVisibleInsets.toShortString() 1689 + " visible=" + mPendingStableInsets.toShortString() 1690 + " outsets=" + mPendingOutsets.toShortString() 1691 + " surface=" + mSurface); 1692 1693 if (mPendingConfiguration.seq != 0) { 1694 if (DEBUG_CONFIGURATION) Log.v(mTag, "Visible with new config: " 1695 + mPendingConfiguration); 1696 updateConfiguration(new Configuration(mPendingConfiguration), !mFirst); 1697 mPendingConfiguration.seq = 0; 1698 } 1699 1700 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1701 mAttachInfo.mOverscanInsets); 1702 contentInsetsChanged = !mPendingContentInsets.equals( 1703 mAttachInfo.mContentInsets); 1704 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1705 mAttachInfo.mVisibleInsets); 1706 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1707 mAttachInfo.mStableInsets); 1708 final boolean outsetsChanged = !mPendingOutsets.equals(mAttachInfo.mOutsets); 1709 final boolean surfaceSizeChanged = (relayoutResult 1710 & WindowManagerGlobal.RELAYOUT_RES_SURFACE_RESIZED) != 0; 1711 final boolean alwaysConsumeNavBarChanged = 1712 mPendingAlwaysConsumeNavBar != mAttachInfo.mAlwaysConsumeNavBar; 1713 if (contentInsetsChanged) { 1714 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1715 if (DEBUG_LAYOUT) Log.v(mTag, "Content insets changing to: " 1716 + mAttachInfo.mContentInsets); 1717 } 1718 if (overscanInsetsChanged) { 1719 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1720 if (DEBUG_LAYOUT) Log.v(mTag, "Overscan insets changing to: " 1721 + mAttachInfo.mOverscanInsets); 1722 // Need to relayout with content insets. 1723 contentInsetsChanged = true; 1724 } 1725 if (stableInsetsChanged) { 1726 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1727 if (DEBUG_LAYOUT) Log.v(mTag, "Decor insets changing to: " 1728 + mAttachInfo.mStableInsets); 1729 // Need to relayout with content insets. 1730 contentInsetsChanged = true; 1731 } 1732 if (alwaysConsumeNavBarChanged) { 1733 mAttachInfo.mAlwaysConsumeNavBar = mPendingAlwaysConsumeNavBar; 1734 contentInsetsChanged = true; 1735 } 1736 if (contentInsetsChanged || mLastSystemUiVisibility != 1737 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1738 || mLastOverscanRequested != mAttachInfo.mOverscanRequested 1739 || outsetsChanged) { 1740 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1741 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1742 mAttachInfo.mOutsets.set(mPendingOutsets); 1743 mApplyInsetsRequested = false; 1744 dispatchApplyInsets(host); 1745 } 1746 if (visibleInsetsChanged) { 1747 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1748 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1749 + mAttachInfo.mVisibleInsets); 1750 } 1751 1752 if (!hadSurface) { 1753 if (mSurface.isValid()) { 1754 // If we are creating a new surface, then we need to 1755 // completely redraw it. Also, when we get to the 1756 // point of drawing it we will hold off and schedule 1757 // a new traversal instead. This is so we can tell the 1758 // window manager about all of the windows being displayed 1759 // before actually drawing them, so it can display then 1760 // all at once. 1761 newSurface = true; 1762 mFullRedrawNeeded = true; 1763 mPreviousTransparentRegion.setEmpty(); 1764 1765 // Only initialize up-front if transparent regions are not 1766 // requested, otherwise defer to see if the entire window 1767 // will be transparent 1768 if (mAttachInfo.mHardwareRenderer != null) { 1769 try { 1770 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1771 mSurface); 1772 if (hwInitialized && (host.mPrivateFlags 1773 & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) == 0) { 1774 // Don't pre-allocate if transparent regions 1775 // are requested as they may not be needed 1776 mSurface.allocateBuffers(); 1777 } 1778 } catch (OutOfResourcesException e) { 1779 handleOutOfResourcesException(e); 1780 return; 1781 } 1782 } 1783 } 1784 } else if (!mSurface.isValid()) { 1785 // If the surface has been removed, then reset the scroll 1786 // positions. 1787 if (mLastScrolledFocus != null) { 1788 mLastScrolledFocus.clear(); 1789 } 1790 mScrollY = mCurScrollY = 0; 1791 if (mView instanceof RootViewSurfaceTaker) { 1792 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1793 } 1794 if (mScroller != null) { 1795 mScroller.abortAnimation(); 1796 } 1797 // Our surface is gone 1798 if (mAttachInfo.mHardwareRenderer != null && 1799 mAttachInfo.mHardwareRenderer.isEnabled()) { 1800 mAttachInfo.mHardwareRenderer.destroy(); 1801 } 1802 } else if ((surfaceGenerationId != mSurface.getGenerationId() 1803 || surfaceSizeChanged) 1804 && mSurfaceHolder == null 1805 && mAttachInfo.mHardwareRenderer != null) { 1806 mFullRedrawNeeded = true; 1807 try { 1808 // Need to do updateSurface (which leads to CanvasContext::setSurface and 1809 // re-create the EGLSurface) if either the Surface changed (as indicated by 1810 // generation id), or WindowManager changed the surface size. The latter is 1811 // because on some chips, changing the consumer side's BufferQueue size may 1812 // not take effect immediately unless we create a new EGLSurface. 1813 // Note that frame size change doesn't always imply surface size change (eg. 1814 // drag resizing uses fullscreen surface), need to check surfaceSizeChanged 1815 // flag from WindowManager. 1816 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1817 } catch (OutOfResourcesException e) { 1818 handleOutOfResourcesException(e); 1819 return; 1820 } 1821 } 1822 1823 final boolean freeformResizing = (relayoutResult 1824 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_FREEFORM) != 0; 1825 final boolean dockedResizing = (relayoutResult 1826 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_DOCKED) != 0; 1827 final boolean dragResizing = freeformResizing || dockedResizing; 1828 if (mDragResizing != dragResizing) { 1829 if (dragResizing) { 1830 mResizeMode = freeformResizing 1831 ? RESIZE_MODE_FREEFORM 1832 : RESIZE_MODE_DOCKED_DIVIDER; 1833 startDragResizing(mPendingBackDropFrame, 1834 mWinFrame.equals(mPendingBackDropFrame), mPendingVisibleInsets, 1835 mPendingStableInsets, mResizeMode); 1836 } else { 1837 // We shouldn't come here, but if we come we should end the resize. 1838 endDragResizing(); 1839 } 1840 } 1841 if (!USE_MT_RENDERER) { 1842 if (dragResizing) { 1843 mCanvasOffsetX = mWinFrame.left; 1844 mCanvasOffsetY = mWinFrame.top; 1845 } else { 1846 mCanvasOffsetX = mCanvasOffsetY = 0; 1847 } 1848 } 1849 } catch (RemoteException e) { 1850 } 1851 1852 if (DEBUG_ORIENTATION) Log.v( 1853 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1854 1855 mAttachInfo.mWindowLeft = frame.left; 1856 mAttachInfo.mWindowTop = frame.top; 1857 1858 // !!FIXME!! This next section handles the case where we did not get the 1859 // window size we asked for. We should avoid this by getting a maximum size from 1860 // the window session beforehand. 1861 if (mWidth != frame.width() || mHeight != frame.height()) { 1862 mWidth = frame.width(); 1863 mHeight = frame.height(); 1864 } 1865 1866 if (mSurfaceHolder != null) { 1867 // The app owns the surface; tell it about what is going on. 1868 if (mSurface.isValid()) { 1869 // XXX .copyFrom() doesn't work! 1870 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1871 mSurfaceHolder.mSurface = mSurface; 1872 } 1873 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1874 mSurfaceHolder.mSurfaceLock.unlock(); 1875 if (mSurface.isValid()) { 1876 if (!hadSurface) { 1877 mSurfaceHolder.ungetCallbacks(); 1878 1879 mIsCreating = true; 1880 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1881 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1882 if (callbacks != null) { 1883 for (SurfaceHolder.Callback c : callbacks) { 1884 c.surfaceCreated(mSurfaceHolder); 1885 } 1886 } 1887 surfaceChanged = true; 1888 } 1889 if (surfaceChanged) { 1890 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1891 lp.format, mWidth, mHeight); 1892 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1893 if (callbacks != null) { 1894 for (SurfaceHolder.Callback c : callbacks) { 1895 c.surfaceChanged(mSurfaceHolder, lp.format, 1896 mWidth, mHeight); 1897 } 1898 } 1899 } 1900 mIsCreating = false; 1901 } else if (hadSurface) { 1902 mSurfaceHolder.ungetCallbacks(); 1903 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1904 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1905 if (callbacks != null) { 1906 for (SurfaceHolder.Callback c : callbacks) { 1907 c.surfaceDestroyed(mSurfaceHolder); 1908 } 1909 } 1910 mSurfaceHolder.mSurfaceLock.lock(); 1911 try { 1912 mSurfaceHolder.mSurface = new Surface(); 1913 } finally { 1914 mSurfaceHolder.mSurfaceLock.unlock(); 1915 } 1916 } 1917 } 1918 1919 final ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 1920 if (hardwareRenderer != null && hardwareRenderer.isEnabled()) { 1921 if (hwInitialized 1922 || mWidth != hardwareRenderer.getWidth() 1923 || mHeight != hardwareRenderer.getHeight()) { 1924 hardwareRenderer.setup(mWidth, mHeight, mAttachInfo, 1925 mWindowAttributes.surfaceInsets); 1926 } 1927 } 1928 1929 if (!mStopped || mReportNextDraw) { 1930 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1931 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1932 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1933 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1934 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1935 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1936 1937 if (DEBUG_LAYOUT) Log.v(mTag, "Ooops, something changed! mWidth=" 1938 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1939 + " mHeight=" + mHeight 1940 + " measuredHeight=" + host.getMeasuredHeight() 1941 + " coveredInsetsChanged=" + contentInsetsChanged); 1942 1943 // Ask host how big it wants to be 1944 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1945 1946 // Implementation of weights from WindowManager.LayoutParams 1947 // We just grow the dimensions as needed and re-measure if 1948 // needs be 1949 int width = host.getMeasuredWidth(); 1950 int height = host.getMeasuredHeight(); 1951 boolean measureAgain = false; 1952 1953 if (lp.horizontalWeight > 0.0f) { 1954 width += (int) ((mWidth - width) * lp.horizontalWeight); 1955 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1956 MeasureSpec.EXACTLY); 1957 measureAgain = true; 1958 } 1959 if (lp.verticalWeight > 0.0f) { 1960 height += (int) ((mHeight - height) * lp.verticalWeight); 1961 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1962 MeasureSpec.EXACTLY); 1963 measureAgain = true; 1964 } 1965 1966 if (measureAgain) { 1967 if (DEBUG_LAYOUT) Log.v(mTag, 1968 "And hey let's measure once more: width=" + width 1969 + " height=" + height); 1970 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1971 } 1972 1973 layoutRequested = true; 1974 } 1975 } 1976 } else { 1977 // Not the first pass and no window/insets/visibility change but the window 1978 // may have moved and we need check that and if so to update the left and right 1979 // in the attach info. We translate only the window frame since on window move 1980 // the window manager tells us only for the new frame but the insets are the 1981 // same and we do not want to translate them more than once. 1982 maybeHandleWindowMove(frame); 1983 } 1984 1985 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 1986 boolean triggerGlobalLayoutListener = didLayout 1987 || mAttachInfo.mRecomputeGlobalAttributes; 1988 if (didLayout) { 1989 performLayout(lp, mWidth, mHeight); 1990 1991 // By this point all views have been sized and positioned 1992 // We can compute the transparent area 1993 1994 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1995 // start out transparent 1996 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1997 host.getLocationInWindow(mTmpLocation); 1998 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1999 mTmpLocation[0] + host.mRight - host.mLeft, 2000 mTmpLocation[1] + host.mBottom - host.mTop); 2001 2002 host.gatherTransparentRegion(mTransparentRegion); 2003 if (mTranslator != null) { 2004 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 2005 } 2006 2007 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 2008 mPreviousTransparentRegion.set(mTransparentRegion); 2009 mFullRedrawNeeded = true; 2010 // reconfigure window manager 2011 try { 2012 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 2013 } catch (RemoteException e) { 2014 } 2015 } 2016 } 2017 2018 if (DBG) { 2019 System.out.println("======================================"); 2020 System.out.println("performTraversals -- after setFrame"); 2021 host.debug(); 2022 } 2023 } 2024 2025 if (triggerGlobalLayoutListener) { 2026 mAttachInfo.mRecomputeGlobalAttributes = false; 2027 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 2028 } 2029 2030 if (computesInternalInsets) { 2031 // Clear the original insets. 2032 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 2033 insets.reset(); 2034 2035 // Compute new insets in place. 2036 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 2037 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 2038 2039 // Tell the window manager. 2040 if (insetsPending || !mLastGivenInsets.equals(insets)) { 2041 mLastGivenInsets.set(insets); 2042 2043 // Translate insets to screen coordinates if needed. 2044 final Rect contentInsets; 2045 final Rect visibleInsets; 2046 final Region touchableRegion; 2047 if (mTranslator != null) { 2048 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 2049 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 2050 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 2051 } else { 2052 contentInsets = insets.contentInsets; 2053 visibleInsets = insets.visibleInsets; 2054 touchableRegion = insets.touchableRegion; 2055 } 2056 2057 try { 2058 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 2059 contentInsets, visibleInsets, touchableRegion); 2060 } catch (RemoteException e) { 2061 } 2062 } 2063 } 2064 2065 if (mFirst) { 2066 // handle first focus request 2067 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: mView.hasFocus()=" 2068 + mView.hasFocus()); 2069 if (mView != null) { 2070 if (!mView.hasFocus()) { 2071 mView.requestFocus(View.FOCUS_FORWARD); 2072 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: requested focused view=" 2073 + mView.findFocus()); 2074 } else { 2075 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: existing focused view=" 2076 + mView.findFocus()); 2077 } 2078 } 2079 } 2080 2081 final boolean changedVisibility = (viewVisibilityChanged || mFirst) && isViewVisible; 2082 final boolean hasWindowFocus = mAttachInfo.mHasWindowFocus && isViewVisible; 2083 final boolean regainedFocus = hasWindowFocus && mLostWindowFocus; 2084 if (regainedFocus) { 2085 mLostWindowFocus = false; 2086 } else if (!hasWindowFocus && mHadWindowFocus) { 2087 mLostWindowFocus = true; 2088 } 2089 2090 if (changedVisibility || regainedFocus) { 2091 host.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2092 } 2093 2094 mFirst = false; 2095 mWillDrawSoon = false; 2096 mNewSurfaceNeeded = false; 2097 mActivityRelaunched = false; 2098 mViewVisibility = viewVisibility; 2099 mHadWindowFocus = hasWindowFocus; 2100 2101 if (hasWindowFocus && !isInLocalFocusMode()) { 2102 final boolean imTarget = WindowManager.LayoutParams 2103 .mayUseInputMethod(mWindowAttributes.flags); 2104 if (imTarget != mLastWasImTarget) { 2105 mLastWasImTarget = imTarget; 2106 InputMethodManager imm = InputMethodManager.peekInstance(); 2107 if (imm != null && imTarget) { 2108 imm.onPreWindowFocus(mView, hasWindowFocus); 2109 imm.onPostWindowFocus(mView, mView.findFocus(), 2110 mWindowAttributes.softInputMode, 2111 !mHasHadWindowFocus, mWindowAttributes.flags); 2112 } 2113 } 2114 } 2115 2116 // Remember if we must report the next draw. 2117 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 2118 mReportNextDraw = true; 2119 } 2120 2121 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || !isViewVisible; 2122 2123 if (!cancelDraw) { 2124 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2125 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2126 mPendingTransitions.get(i).startChangingAnimations(); 2127 } 2128 mPendingTransitions.clear(); 2129 } 2130 2131 performDraw(); 2132 } else { 2133 if (isViewVisible) { 2134 // Try again 2135 scheduleTraversals(); 2136 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2137 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2138 mPendingTransitions.get(i).endChangingAnimations(); 2139 } 2140 mPendingTransitions.clear(); 2141 } 2142 } 2143 2144 mIsInTraversal = false; 2145 } 2146 2147 private void maybeHandleWindowMove(Rect frame) { 2148 2149 // TODO: Well, we are checking whether the frame has changed similarly 2150 // to how this is done for the insets. This is however incorrect since 2151 // the insets and the frame are translated. For example, the old frame 2152 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 2153 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 2154 // true since we are comparing a not translated value to a translated one. 2155 // This scenario is rare but we may want to fix that. 2156 2157 final boolean windowMoved = mAttachInfo.mWindowLeft != frame.left 2158 || mAttachInfo.mWindowTop != frame.top; 2159 if (windowMoved) { 2160 if (mTranslator != null) { 2161 mTranslator.translateRectInScreenToAppWinFrame(frame); 2162 } 2163 mAttachInfo.mWindowLeft = frame.left; 2164 mAttachInfo.mWindowTop = frame.top; 2165 2166 // Update the light position for the new window offsets. 2167 if (mAttachInfo.mHardwareRenderer != null) { 2168 mAttachInfo.mHardwareRenderer.setLightCenter(mAttachInfo); 2169 } 2170 } 2171 } 2172 2173 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2174 Log.e(mTag, "OutOfResourcesException initializing HW surface", e); 2175 try { 2176 if (!mWindowSession.outOfMemory(mWindow) && 2177 Process.myUid() != Process.SYSTEM_UID) { 2178 Slog.w(mTag, "No processes killed for memory; killing self"); 2179 Process.killProcess(Process.myPid()); 2180 } 2181 } catch (RemoteException ex) { 2182 } 2183 mLayoutRequested = true; // ask wm for a new surface next time. 2184 } 2185 2186 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2187 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2188 try { 2189 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2190 } finally { 2191 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2192 } 2193 } 2194 2195 /** 2196 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2197 * is currently undergoing a layout pass. 2198 * 2199 * @return whether the view hierarchy is currently undergoing a layout pass 2200 */ 2201 boolean isInLayout() { 2202 return mInLayout; 2203 } 2204 2205 /** 2206 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2207 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2208 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2209 * all children in that container hierarchy are measured and laid out at the end of the layout 2210 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2211 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2212 * we check all of those views to see if any still have pending layout requests, which 2213 * indicates that they were not correctly handled by their container hierarchy. If that is 2214 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2215 * to blank containers, and force a second request/measure/layout pass in this frame. If 2216 * more requestLayout() calls are received during that second layout pass, we post those 2217 * requests to the next frame to avoid possible infinite loops. 2218 * 2219 * <p>The return value from this method indicates whether the request should proceed 2220 * (if it is a request during the first layout pass) or should be skipped and posted to the 2221 * next frame (if it is a request during the second layout pass).</p> 2222 * 2223 * @param view the view that requested the layout. 2224 * 2225 * @return true if request should proceed, false otherwise. 2226 */ 2227 boolean requestLayoutDuringLayout(final View view) { 2228 if (view.mParent == null || view.mAttachInfo == null) { 2229 // Would not normally trigger another layout, so just let it pass through as usual 2230 return true; 2231 } 2232 if (!mLayoutRequesters.contains(view)) { 2233 mLayoutRequesters.add(view); 2234 } 2235 if (!mHandlingLayoutInLayoutRequest) { 2236 // Let the request proceed normally; it will be processed in a second layout pass 2237 // if necessary 2238 return true; 2239 } else { 2240 // Don't let the request proceed during the second layout pass. 2241 // It will post to the next frame instead. 2242 return false; 2243 } 2244 } 2245 2246 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2247 int desiredWindowHeight) { 2248 mLayoutRequested = false; 2249 mScrollMayChange = true; 2250 mInLayout = true; 2251 2252 final View host = mView; 2253 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2254 Log.v(mTag, "Laying out " + host + " to (" + 2255 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2256 } 2257 2258 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2259 try { 2260 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2261 2262 mInLayout = false; 2263 int numViewsRequestingLayout = mLayoutRequesters.size(); 2264 if (numViewsRequestingLayout > 0) { 2265 // requestLayout() was called during layout. 2266 // If no layout-request flags are set on the requesting views, there is no problem. 2267 // If some requests are still pending, then we need to clear those flags and do 2268 // a full request/measure/layout pass to handle this situation. 2269 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2270 false); 2271 if (validLayoutRequesters != null) { 2272 // Set this flag to indicate that any further requests are happening during 2273 // the second pass, which may result in posting those requests to the next 2274 // frame instead 2275 mHandlingLayoutInLayoutRequest = true; 2276 2277 // Process fresh layout requests, then measure and layout 2278 int numValidRequests = validLayoutRequesters.size(); 2279 for (int i = 0; i < numValidRequests; ++i) { 2280 final View view = validLayoutRequesters.get(i); 2281 Log.w("View", "requestLayout() improperly called by " + view + 2282 " during layout: running second layout pass"); 2283 view.requestLayout(); 2284 } 2285 measureHierarchy(host, lp, mView.getContext().getResources(), 2286 desiredWindowWidth, desiredWindowHeight); 2287 mInLayout = true; 2288 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2289 2290 mHandlingLayoutInLayoutRequest = false; 2291 2292 // Check the valid requests again, this time without checking/clearing the 2293 // layout flags, since requests happening during the second pass get noop'd 2294 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2295 if (validLayoutRequesters != null) { 2296 final ArrayList<View> finalRequesters = validLayoutRequesters; 2297 // Post second-pass requests to the next frame 2298 getRunQueue().post(new Runnable() { 2299 @Override 2300 public void run() { 2301 int numValidRequests = finalRequesters.size(); 2302 for (int i = 0; i < numValidRequests; ++i) { 2303 final View view = finalRequesters.get(i); 2304 Log.w("View", "requestLayout() improperly called by " + view + 2305 " during second layout pass: posting in next frame"); 2306 view.requestLayout(); 2307 } 2308 } 2309 }); 2310 } 2311 } 2312 2313 } 2314 } finally { 2315 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2316 } 2317 mInLayout = false; 2318 } 2319 2320 /** 2321 * This method is called during layout when there have been calls to requestLayout() during 2322 * layout. It walks through the list of views that requested layout to determine which ones 2323 * still need it, based on visibility in the hierarchy and whether they have already been 2324 * handled (as is usually the case with ListView children). 2325 * 2326 * @param layoutRequesters The list of views that requested layout during layout 2327 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2328 * If so, the FORCE_LAYOUT flag was not set on requesters. 2329 * @return A list of the actual views that still need to be laid out. 2330 */ 2331 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2332 boolean secondLayoutRequests) { 2333 2334 int numViewsRequestingLayout = layoutRequesters.size(); 2335 ArrayList<View> validLayoutRequesters = null; 2336 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2337 View view = layoutRequesters.get(i); 2338 if (view != null && view.mAttachInfo != null && view.mParent != null && 2339 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2340 View.PFLAG_FORCE_LAYOUT)) { 2341 boolean gone = false; 2342 View parent = view; 2343 // Only trigger new requests for views in a non-GONE hierarchy 2344 while (parent != null) { 2345 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2346 gone = true; 2347 break; 2348 } 2349 if (parent.mParent instanceof View) { 2350 parent = (View) parent.mParent; 2351 } else { 2352 parent = null; 2353 } 2354 } 2355 if (!gone) { 2356 if (validLayoutRequesters == null) { 2357 validLayoutRequesters = new ArrayList<View>(); 2358 } 2359 validLayoutRequesters.add(view); 2360 } 2361 } 2362 } 2363 if (!secondLayoutRequests) { 2364 // If we're checking the layout flags, then we need to clean them up also 2365 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2366 View view = layoutRequesters.get(i); 2367 while (view != null && 2368 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2369 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2370 if (view.mParent instanceof View) { 2371 view = (View) view.mParent; 2372 } else { 2373 view = null; 2374 } 2375 } 2376 } 2377 } 2378 layoutRequesters.clear(); 2379 return validLayoutRequesters; 2380 } 2381 2382 @Override 2383 public void requestTransparentRegion(View child) { 2384 // the test below should not fail unless someone is messing with us 2385 checkThread(); 2386 if (mView == child) { 2387 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2388 // Need to make sure we re-evaluate the window attributes next 2389 // time around, to ensure the window has the correct format. 2390 mWindowAttributesChanged = true; 2391 mWindowAttributesChangesFlag = 0; 2392 requestLayout(); 2393 } 2394 } 2395 2396 /** 2397 * Figures out the measure spec for the root view in a window based on it's 2398 * layout params. 2399 * 2400 * @param windowSize 2401 * The available width or height of the window 2402 * 2403 * @param rootDimension 2404 * The layout params for one dimension (width or height) of the 2405 * window. 2406 * 2407 * @return The measure spec to use to measure the root view. 2408 */ 2409 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2410 int measureSpec; 2411 switch (rootDimension) { 2412 2413 case ViewGroup.LayoutParams.MATCH_PARENT: 2414 // Window can't resize. Force root view to be windowSize. 2415 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2416 break; 2417 case ViewGroup.LayoutParams.WRAP_CONTENT: 2418 // Window can resize. Set max size for root view. 2419 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2420 break; 2421 default: 2422 // Window wants to be an exact size. Force root view to be that size. 2423 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2424 break; 2425 } 2426 return measureSpec; 2427 } 2428 2429 int mHardwareXOffset; 2430 int mHardwareYOffset; 2431 2432 @Override 2433 public void onHardwarePreDraw(DisplayListCanvas canvas) { 2434 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2435 } 2436 2437 @Override 2438 public void onHardwarePostDraw(DisplayListCanvas canvas) { 2439 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2440 synchronized (mWindowCallbacks) { 2441 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 2442 mWindowCallbacks.get(i).onPostDraw(canvas); 2443 } 2444 } 2445 } 2446 2447 /** 2448 * @hide 2449 */ 2450 void outputDisplayList(View view) { 2451 view.mRenderNode.output(); 2452 if (mAttachInfo.mHardwareRenderer != null) { 2453 ((ThreadedRenderer)mAttachInfo.mHardwareRenderer).serializeDisplayListTree(); 2454 } 2455 } 2456 2457 /** 2458 * @see #PROPERTY_PROFILE_RENDERING 2459 */ 2460 private void profileRendering(boolean enabled) { 2461 if (mProfileRendering) { 2462 mRenderProfilingEnabled = enabled; 2463 2464 if (mRenderProfiler != null) { 2465 mChoreographer.removeFrameCallback(mRenderProfiler); 2466 } 2467 if (mRenderProfilingEnabled) { 2468 if (mRenderProfiler == null) { 2469 mRenderProfiler = new Choreographer.FrameCallback() { 2470 @Override 2471 public void doFrame(long frameTimeNanos) { 2472 mDirty.set(0, 0, mWidth, mHeight); 2473 scheduleTraversals(); 2474 if (mRenderProfilingEnabled) { 2475 mChoreographer.postFrameCallback(mRenderProfiler); 2476 } 2477 } 2478 }; 2479 } 2480 mChoreographer.postFrameCallback(mRenderProfiler); 2481 } else { 2482 mRenderProfiler = null; 2483 } 2484 } 2485 } 2486 2487 /** 2488 * Called from draw() when DEBUG_FPS is enabled 2489 */ 2490 private void trackFPS() { 2491 // Tracks frames per second drawn. First value in a series of draws may be bogus 2492 // because it down not account for the intervening idle time 2493 long nowTime = System.currentTimeMillis(); 2494 if (mFpsStartTime < 0) { 2495 mFpsStartTime = mFpsPrevTime = nowTime; 2496 mFpsNumFrames = 0; 2497 } else { 2498 ++mFpsNumFrames; 2499 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2500 long frameTime = nowTime - mFpsPrevTime; 2501 long totalTime = nowTime - mFpsStartTime; 2502 Log.v(mTag, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2503 mFpsPrevTime = nowTime; 2504 if (totalTime > 1000) { 2505 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2506 Log.v(mTag, "0x" + thisHash + "\tFPS:\t" + fps); 2507 mFpsStartTime = nowTime; 2508 mFpsNumFrames = 0; 2509 } 2510 } 2511 } 2512 2513 private void performDraw() { 2514 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2515 return; 2516 } 2517 2518 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2519 mFullRedrawNeeded = false; 2520 2521 mIsDrawing = true; 2522 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2523 try { 2524 draw(fullRedrawNeeded); 2525 } finally { 2526 mIsDrawing = false; 2527 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2528 } 2529 2530 // For whatever reason we didn't create a HardwareRenderer, end any 2531 // hardware animations that are now dangling 2532 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2533 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2534 for (int i = 0; i < count; i++) { 2535 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2536 } 2537 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2538 } 2539 2540 if (mReportNextDraw) { 2541 mReportNextDraw = false; 2542 2543 // if we're using multi-thread renderer, wait for the window frame draws 2544 if (mWindowDrawCountDown != null) { 2545 try { 2546 mWindowDrawCountDown.await(); 2547 } catch (InterruptedException e) { 2548 Log.e(mTag, "Window redraw count down interruped!"); 2549 } 2550 mWindowDrawCountDown = null; 2551 } 2552 2553 if (mAttachInfo.mHardwareRenderer != null) { 2554 mAttachInfo.mHardwareRenderer.fence(); 2555 } 2556 2557 if (LOCAL_LOGV) { 2558 Log.v(mTag, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2559 } 2560 if (mSurfaceHolder != null && mSurface.isValid()) { 2561 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2562 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2563 if (callbacks != null) { 2564 for (SurfaceHolder.Callback c : callbacks) { 2565 if (c instanceof SurfaceHolder.Callback2) { 2566 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded(mSurfaceHolder); 2567 } 2568 } 2569 } 2570 } 2571 try { 2572 mWindowSession.finishDrawing(mWindow); 2573 } catch (RemoteException e) { 2574 } 2575 } 2576 } 2577 2578 private void draw(boolean fullRedrawNeeded) { 2579 Surface surface = mSurface; 2580 if (!surface.isValid()) { 2581 return; 2582 } 2583 2584 if (DEBUG_FPS) { 2585 trackFPS(); 2586 } 2587 2588 if (!sFirstDrawComplete) { 2589 synchronized (sFirstDrawHandlers) { 2590 sFirstDrawComplete = true; 2591 final int count = sFirstDrawHandlers.size(); 2592 for (int i = 0; i< count; i++) { 2593 mHandler.post(sFirstDrawHandlers.get(i)); 2594 } 2595 } 2596 } 2597 2598 scrollToRectOrFocus(null, false); 2599 2600 if (mAttachInfo.mViewScrollChanged) { 2601 mAttachInfo.mViewScrollChanged = false; 2602 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2603 } 2604 2605 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2606 final int curScrollY; 2607 if (animating) { 2608 curScrollY = mScroller.getCurrY(); 2609 } else { 2610 curScrollY = mScrollY; 2611 } 2612 if (mCurScrollY != curScrollY) { 2613 mCurScrollY = curScrollY; 2614 fullRedrawNeeded = true; 2615 if (mView instanceof RootViewSurfaceTaker) { 2616 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2617 } 2618 } 2619 2620 final float appScale = mAttachInfo.mApplicationScale; 2621 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2622 2623 int resizeAlpha = 0; 2624 2625 final Rect dirty = mDirty; 2626 if (mSurfaceHolder != null) { 2627 // The app owns the surface, we won't draw. 2628 dirty.setEmpty(); 2629 if (animating && mScroller != null) { 2630 mScroller.abortAnimation(); 2631 } 2632 return; 2633 } 2634 2635 if (fullRedrawNeeded) { 2636 mAttachInfo.mIgnoreDirtyState = true; 2637 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2638 } 2639 2640 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2641 Log.v(mTag, "Draw " + mView + "/" 2642 + mWindowAttributes.getTitle() 2643 + ": dirty={" + dirty.left + "," + dirty.top 2644 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2645 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2646 appScale + ", width=" + mWidth + ", height=" + mHeight); 2647 } 2648 2649 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2650 2651 int xOffset = -mCanvasOffsetX; 2652 int yOffset = -mCanvasOffsetY + curScrollY; 2653 final WindowManager.LayoutParams params = mWindowAttributes; 2654 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2655 if (surfaceInsets != null) { 2656 xOffset -= surfaceInsets.left; 2657 yOffset -= surfaceInsets.top; 2658 2659 // Offset dirty rect for surface insets. 2660 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2661 } 2662 2663 boolean accessibilityFocusDirty = false; 2664 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2665 if (drawable != null) { 2666 final Rect bounds = mAttachInfo.mTmpInvalRect; 2667 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2668 if (!hasFocus) { 2669 bounds.setEmpty(); 2670 } 2671 if (!bounds.equals(drawable.getBounds())) { 2672 accessibilityFocusDirty = true; 2673 } 2674 } 2675 2676 mAttachInfo.mDrawingTime = 2677 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2678 2679 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2680 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2681 // If accessibility focus moved, always invalidate the root. 2682 boolean invalidateRoot = accessibilityFocusDirty || mInvalidateRootRequested; 2683 mInvalidateRootRequested = false; 2684 2685 // Draw with hardware renderer. 2686 mIsAnimating = false; 2687 2688 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2689 mHardwareYOffset = yOffset; 2690 mHardwareXOffset = xOffset; 2691 invalidateRoot = true; 2692 } 2693 2694 if (invalidateRoot) { 2695 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2696 } 2697 2698 dirty.setEmpty(); 2699 2700 // Stage the content drawn size now. It will be transferred to the renderer 2701 // shortly before the draw commands get send to the renderer. 2702 final boolean updated = updateContentDrawBounds(); 2703 2704 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2705 2706 if (updated) { 2707 requestDrawWindow(); 2708 } 2709 } else { 2710 // If we get here with a disabled & requested hardware renderer, something went 2711 // wrong (an invalidate posted right before we destroyed the hardware surface 2712 // for instance) so we should just bail out. Locking the surface with software 2713 // rendering at this point would lock it forever and prevent hardware renderer 2714 // from doing its job when it comes back. 2715 // Before we request a new frame we must however attempt to reinitiliaze the 2716 // hardware renderer if it's in requested state. This would happen after an 2717 // eglTerminate() for instance. 2718 if (mAttachInfo.mHardwareRenderer != null && 2719 !mAttachInfo.mHardwareRenderer.isEnabled() && 2720 mAttachInfo.mHardwareRenderer.isRequested()) { 2721 2722 try { 2723 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2724 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 2725 } catch (OutOfResourcesException e) { 2726 handleOutOfResourcesException(e); 2727 return; 2728 } 2729 2730 mFullRedrawNeeded = true; 2731 scheduleTraversals(); 2732 return; 2733 } 2734 2735 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2736 return; 2737 } 2738 } 2739 } 2740 2741 if (animating) { 2742 mFullRedrawNeeded = true; 2743 scheduleTraversals(); 2744 } 2745 } 2746 2747 /** 2748 * @return true if drawing was successful, false if an error occurred 2749 */ 2750 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2751 boolean scalingRequired, Rect dirty) { 2752 2753 // Draw with software renderer. 2754 final Canvas canvas; 2755 try { 2756 final int left = dirty.left; 2757 final int top = dirty.top; 2758 final int right = dirty.right; 2759 final int bottom = dirty.bottom; 2760 2761 canvas = mSurface.lockCanvas(dirty); 2762 2763 // The dirty rectangle can be modified by Surface.lockCanvas() 2764 //noinspection ConstantConditions 2765 if (left != dirty.left || top != dirty.top || right != dirty.right 2766 || bottom != dirty.bottom) { 2767 attachInfo.mIgnoreDirtyState = true; 2768 } 2769 2770 // TODO: Do this in native 2771 canvas.setDensity(mDensity); 2772 } catch (Surface.OutOfResourcesException e) { 2773 handleOutOfResourcesException(e); 2774 return false; 2775 } catch (IllegalArgumentException e) { 2776 Log.e(mTag, "Could not lock surface", e); 2777 // Don't assume this is due to out of memory, it could be 2778 // something else, and if it is something else then we could 2779 // kill stuff (or ourself) for no reason. 2780 mLayoutRequested = true; // ask wm for a new surface next time. 2781 return false; 2782 } 2783 2784 try { 2785 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2786 Log.v(mTag, "Surface " + surface + " drawing to bitmap w=" 2787 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2788 //canvas.drawARGB(255, 255, 0, 0); 2789 } 2790 2791 // If this bitmap's format includes an alpha channel, we 2792 // need to clear it before drawing so that the child will 2793 // properly re-composite its drawing on a transparent 2794 // background. This automatically respects the clip/dirty region 2795 // or 2796 // If we are applying an offset, we need to clear the area 2797 // where the offset doesn't appear to avoid having garbage 2798 // left in the blank areas. 2799 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2800 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2801 } 2802 2803 dirty.setEmpty(); 2804 mIsAnimating = false; 2805 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2806 2807 if (DEBUG_DRAW) { 2808 Context cxt = mView.getContext(); 2809 Log.i(mTag, "Drawing: package:" + cxt.getPackageName() + 2810 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2811 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2812 } 2813 try { 2814 canvas.translate(-xoff, -yoff); 2815 if (mTranslator != null) { 2816 mTranslator.translateCanvas(canvas); 2817 } 2818 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2819 attachInfo.mSetIgnoreDirtyState = false; 2820 2821 mView.draw(canvas); 2822 2823 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2824 } finally { 2825 if (!attachInfo.mSetIgnoreDirtyState) { 2826 // Only clear the flag if it was not set during the mView.draw() call 2827 attachInfo.mIgnoreDirtyState = false; 2828 } 2829 } 2830 } finally { 2831 try { 2832 surface.unlockCanvasAndPost(canvas); 2833 } catch (IllegalArgumentException e) { 2834 Log.e(mTag, "Could not unlock surface", e); 2835 mLayoutRequested = true; // ask wm for a new surface next time. 2836 //noinspection ReturnInsideFinallyBlock 2837 return false; 2838 } 2839 2840 if (LOCAL_LOGV) { 2841 Log.v(mTag, "Surface " + surface + " unlockCanvasAndPost"); 2842 } 2843 } 2844 return true; 2845 } 2846 2847 /** 2848 * We want to draw a highlight around the current accessibility focused. 2849 * Since adding a style for all possible view is not a viable option we 2850 * have this specialized drawing method. 2851 * 2852 * Note: We are doing this here to be able to draw the highlight for 2853 * virtual views in addition to real ones. 2854 * 2855 * @param canvas The canvas on which to draw. 2856 */ 2857 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2858 final Rect bounds = mAttachInfo.mTmpInvalRect; 2859 if (getAccessibilityFocusedRect(bounds)) { 2860 final Drawable drawable = getAccessibilityFocusedDrawable(); 2861 if (drawable != null) { 2862 drawable.setBounds(bounds); 2863 drawable.draw(canvas); 2864 } 2865 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2866 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2867 } 2868 } 2869 2870 private boolean getAccessibilityFocusedRect(Rect bounds) { 2871 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2872 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2873 return false; 2874 } 2875 2876 final View host = mAccessibilityFocusedHost; 2877 if (host == null || host.mAttachInfo == null) { 2878 return false; 2879 } 2880 2881 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2882 if (provider == null) { 2883 host.getBoundsOnScreen(bounds, true); 2884 } else if (mAccessibilityFocusedVirtualView != null) { 2885 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2886 } else { 2887 return false; 2888 } 2889 2890 // Transform the rect into window-relative coordinates. 2891 final AttachInfo attachInfo = mAttachInfo; 2892 bounds.offset(0, attachInfo.mViewRootImpl.mScrollY); 2893 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2894 if (!bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, 2895 attachInfo.mViewRootImpl.mHeight)) { 2896 // If no intersection, set bounds to empty. 2897 bounds.setEmpty(); 2898 } 2899 return !bounds.isEmpty(); 2900 } 2901 2902 private Drawable getAccessibilityFocusedDrawable() { 2903 // Lazily load the accessibility focus drawable. 2904 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2905 final TypedValue value = new TypedValue(); 2906 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2907 R.attr.accessibilityFocusedDrawable, value, true); 2908 if (resolved) { 2909 mAttachInfo.mAccessibilityFocusDrawable = 2910 mView.mContext.getDrawable(value.resourceId); 2911 } 2912 } 2913 return mAttachInfo.mAccessibilityFocusDrawable; 2914 } 2915 2916 /** 2917 * Requests that the root render node is invalidated next time we perform a draw, such that 2918 * {@link WindowCallbacks#onPostDraw} gets called. 2919 */ 2920 public void requestInvalidateRootRenderNode() { 2921 mInvalidateRootRequested = true; 2922 } 2923 2924 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2925 final Rect ci = mAttachInfo.mContentInsets; 2926 final Rect vi = mAttachInfo.mVisibleInsets; 2927 int scrollY = 0; 2928 boolean handled = false; 2929 2930 if (vi.left > ci.left || vi.top > ci.top 2931 || vi.right > ci.right || vi.bottom > ci.bottom) { 2932 // We'll assume that we aren't going to change the scroll 2933 // offset, since we want to avoid that unless it is actually 2934 // going to make the focus visible... otherwise we scroll 2935 // all over the place. 2936 scrollY = mScrollY; 2937 // We can be called for two different situations: during a draw, 2938 // to update the scroll position if the focus has changed (in which 2939 // case 'rectangle' is null), or in response to a 2940 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2941 // is non-null and we just want to scroll to whatever that 2942 // rectangle is). 2943 final View focus = mView.findFocus(); 2944 if (focus == null) { 2945 return false; 2946 } 2947 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2948 if (focus != lastScrolledFocus) { 2949 // If the focus has changed, then ignore any requests to scroll 2950 // to a rectangle; first we want to make sure the entire focus 2951 // view is visible. 2952 rectangle = null; 2953 } 2954 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Eval scroll: focus=" + focus 2955 + " rectangle=" + rectangle + " ci=" + ci 2956 + " vi=" + vi); 2957 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2958 // Optimization: if the focus hasn't changed since last 2959 // time, and no layout has happened, then just leave things 2960 // as they are. 2961 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Keeping scroll y=" 2962 + mScrollY + " vi=" + vi.toShortString()); 2963 } else { 2964 // We need to determine if the currently focused view is 2965 // within the visible part of the window and, if not, apply 2966 // a pan so it can be seen. 2967 mLastScrolledFocus = new WeakReference<View>(focus); 2968 mScrollMayChange = false; 2969 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Need to scroll?"); 2970 // Try to find the rectangle from the focus view. 2971 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2972 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Root w=" 2973 + mView.getWidth() + " h=" + mView.getHeight() 2974 + " ci=" + ci.toShortString() 2975 + " vi=" + vi.toShortString()); 2976 if (rectangle == null) { 2977 focus.getFocusedRect(mTempRect); 2978 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Focus " + focus 2979 + ": focusRect=" + mTempRect.toShortString()); 2980 if (mView instanceof ViewGroup) { 2981 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2982 focus, mTempRect); 2983 } 2984 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2985 "Focus in window: focusRect=" 2986 + mTempRect.toShortString() 2987 + " visRect=" + mVisRect.toShortString()); 2988 } else { 2989 mTempRect.set(rectangle); 2990 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2991 "Request scroll to rect: " 2992 + mTempRect.toShortString() 2993 + " visRect=" + mVisRect.toShortString()); 2994 } 2995 if (mTempRect.intersect(mVisRect)) { 2996 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2997 "Focus window visible rect: " 2998 + mTempRect.toShortString()); 2999 if (mTempRect.height() > 3000 (mView.getHeight()-vi.top-vi.bottom)) { 3001 // If the focus simply is not going to fit, then 3002 // best is probably just to leave things as-is. 3003 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3004 "Too tall; leaving scrollY=" + scrollY); 3005 } else if ((mTempRect.top-scrollY) < vi.top) { 3006 scrollY -= vi.top - (mTempRect.top-scrollY); 3007 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3008 "Top covered; scrollY=" + scrollY); 3009 } else if ((mTempRect.bottom-scrollY) 3010 > (mView.getHeight()-vi.bottom)) { 3011 scrollY += (mTempRect.bottom-scrollY) 3012 - (mView.getHeight()-vi.bottom); 3013 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3014 "Bottom covered; scrollY=" + scrollY); 3015 } 3016 handled = true; 3017 } 3018 } 3019 } 3020 } 3021 3022 if (scrollY != mScrollY) { 3023 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Pan scroll changed: old=" 3024 + mScrollY + " , new=" + scrollY); 3025 if (!immediate) { 3026 if (mScroller == null) { 3027 mScroller = new Scroller(mView.getContext()); 3028 } 3029 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 3030 } else if (mScroller != null) { 3031 mScroller.abortAnimation(); 3032 } 3033 mScrollY = scrollY; 3034 } 3035 3036 return handled; 3037 } 3038 3039 /** 3040 * @hide 3041 */ 3042 public View getAccessibilityFocusedHost() { 3043 return mAccessibilityFocusedHost; 3044 } 3045 3046 /** 3047 * @hide 3048 */ 3049 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 3050 return mAccessibilityFocusedVirtualView; 3051 } 3052 3053 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 3054 // If we have a virtual view with accessibility focus we need 3055 // to clear the focus and invalidate the virtual view bounds. 3056 if (mAccessibilityFocusedVirtualView != null) { 3057 3058 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 3059 View focusHost = mAccessibilityFocusedHost; 3060 3061 // Wipe the state of the current accessibility focus since 3062 // the call into the provider to clear accessibility focus 3063 // will fire an accessibility event which will end up calling 3064 // this method and we want to have clean state when this 3065 // invocation happens. 3066 mAccessibilityFocusedHost = null; 3067 mAccessibilityFocusedVirtualView = null; 3068 3069 // Clear accessibility focus on the host after clearing state since 3070 // this method may be reentrant. 3071 focusHost.clearAccessibilityFocusNoCallbacks(); 3072 3073 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 3074 if (provider != null) { 3075 // Invalidate the area of the cleared accessibility focus. 3076 focusNode.getBoundsInParent(mTempRect); 3077 focusHost.invalidate(mTempRect); 3078 // Clear accessibility focus in the virtual node. 3079 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 3080 focusNode.getSourceNodeId()); 3081 provider.performAction(virtualNodeId, 3082 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 3083 } 3084 focusNode.recycle(); 3085 } 3086 if (mAccessibilityFocusedHost != null) { 3087 // Clear accessibility focus in the view. 3088 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 3089 } 3090 3091 // Set the new focus host and node. 3092 mAccessibilityFocusedHost = view; 3093 mAccessibilityFocusedVirtualView = node; 3094 3095 if (mAttachInfo.mHardwareRenderer != null) { 3096 mAttachInfo.mHardwareRenderer.invalidateRoot(); 3097 } 3098 } 3099 3100 void setPointerCapture(View view) { 3101 if (!mAttachInfo.mHasWindowFocus) { 3102 Log.w(mTag, "Can't set capture if it's not focused."); 3103 return; 3104 } 3105 if (mCapturingView == view) { 3106 return; 3107 } 3108 mCapturingView = view; 3109 InputManager.getInstance().setPointerIconDetached(true); 3110 } 3111 3112 void releasePointerCapture(View view) { 3113 if (mCapturingView != view || mCapturingView == null) { 3114 return; 3115 } 3116 3117 mCapturingView = null; 3118 InputManager.getInstance().setPointerIconDetached(false); 3119 } 3120 3121 boolean hasPointerCapture(View view) { 3122 return view != null && mCapturingView == view; 3123 } 3124 3125 @Override 3126 public void requestChildFocus(View child, View focused) { 3127 if (DEBUG_INPUT_RESIZE) { 3128 Log.v(mTag, "Request child focus: focus now " + focused); 3129 } 3130 checkThread(); 3131 scheduleTraversals(); 3132 } 3133 3134 @Override 3135 public void clearChildFocus(View child) { 3136 if (DEBUG_INPUT_RESIZE) { 3137 Log.v(mTag, "Clearing child focus"); 3138 } 3139 checkThread(); 3140 scheduleTraversals(); 3141 } 3142 3143 @Override 3144 public ViewParent getParentForAccessibility() { 3145 return null; 3146 } 3147 3148 @Override 3149 public void focusableViewAvailable(View v) { 3150 checkThread(); 3151 if (mView != null) { 3152 if (!mView.hasFocus()) { 3153 v.requestFocus(); 3154 } else { 3155 // the one case where will transfer focus away from the current one 3156 // is if the current view is a view group that prefers to give focus 3157 // to its children first AND the view is a descendant of it. 3158 View focused = mView.findFocus(); 3159 if (focused instanceof ViewGroup) { 3160 ViewGroup group = (ViewGroup) focused; 3161 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3162 && isViewDescendantOf(v, focused)) { 3163 v.requestFocus(); 3164 } 3165 } 3166 } 3167 } 3168 } 3169 3170 @Override 3171 public void recomputeViewAttributes(View child) { 3172 checkThread(); 3173 if (mView == child) { 3174 mAttachInfo.mRecomputeGlobalAttributes = true; 3175 if (!mWillDrawSoon) { 3176 scheduleTraversals(); 3177 } 3178 } 3179 } 3180 3181 void dispatchDetachedFromWindow() { 3182 if (mView != null && mView.mAttachInfo != null) { 3183 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 3184 mView.dispatchDetachedFromWindow(); 3185 } 3186 3187 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 3188 mAccessibilityManager.removeAccessibilityStateChangeListener( 3189 mAccessibilityInteractionConnectionManager); 3190 mAccessibilityManager.removeHighTextContrastStateChangeListener( 3191 mHighContrastTextManager); 3192 removeSendWindowContentChangedCallback(); 3193 3194 destroyHardwareRenderer(); 3195 3196 setAccessibilityFocus(null, null); 3197 3198 mView.assignParent(null); 3199 mView = null; 3200 mAttachInfo.mRootView = null; 3201 3202 if (mCapturingView != null) { 3203 releasePointerCapture(mCapturingView); 3204 } 3205 3206 mSurface.release(); 3207 3208 if (mInputQueueCallback != null && mInputQueue != null) { 3209 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 3210 mInputQueue.dispose(); 3211 mInputQueueCallback = null; 3212 mInputQueue = null; 3213 } 3214 if (mInputEventReceiver != null) { 3215 mInputEventReceiver.dispose(); 3216 mInputEventReceiver = null; 3217 } 3218 try { 3219 mWindowSession.remove(mWindow); 3220 } catch (RemoteException e) { 3221 } 3222 3223 // Dispose the input channel after removing the window so the Window Manager 3224 // doesn't interpret the input channel being closed as an abnormal termination. 3225 if (mInputChannel != null) { 3226 mInputChannel.dispose(); 3227 mInputChannel = null; 3228 } 3229 3230 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3231 3232 unscheduleTraversals(); 3233 } 3234 3235 void updateConfiguration(Configuration config, boolean force) { 3236 if (DEBUG_CONFIGURATION) Log.v(mTag, 3237 "Applying new config to window " 3238 + mWindowAttributes.getTitle() 3239 + ": " + config); 3240 3241 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3242 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3243 config = new Configuration(config); 3244 ci.applyToConfiguration(mNoncompatDensity, config); 3245 } 3246 3247 synchronized (sConfigCallbacks) { 3248 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3249 sConfigCallbacks.get(i).onConfigurationChanged(config); 3250 } 3251 } 3252 if (mView != null) { 3253 // At this point the resources have been updated to 3254 // have the most recent config, whatever that is. Use 3255 // the one in them which may be newer. 3256 config = mView.getResources().getConfiguration(); 3257 if (force || mLastConfiguration.diff(config) != 0) { 3258 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3259 final int currentLayoutDirection = config.getLayoutDirection(); 3260 mLastConfiguration.setTo(config); 3261 if (lastLayoutDirection != currentLayoutDirection && 3262 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3263 mView.setLayoutDirection(currentLayoutDirection); 3264 } 3265 mView.dispatchConfigurationChanged(config); 3266 } 3267 } 3268 } 3269 3270 /** 3271 * Return true if child is an ancestor of parent, (or equal to the parent). 3272 */ 3273 public static boolean isViewDescendantOf(View child, View parent) { 3274 if (child == parent) { 3275 return true; 3276 } 3277 3278 final ViewParent theParent = child.getParent(); 3279 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3280 } 3281 3282 private static void forceLayout(View view) { 3283 view.forceLayout(); 3284 if (view instanceof ViewGroup) { 3285 ViewGroup group = (ViewGroup) view; 3286 final int count = group.getChildCount(); 3287 for (int i = 0; i < count; i++) { 3288 forceLayout(group.getChildAt(i)); 3289 } 3290 } 3291 } 3292 3293 private final static int MSG_INVALIDATE = 1; 3294 private final static int MSG_INVALIDATE_RECT = 2; 3295 private final static int MSG_DIE = 3; 3296 private final static int MSG_RESIZED = 4; 3297 private final static int MSG_RESIZED_REPORT = 5; 3298 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3299 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3300 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3301 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3302 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3303 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 3304 private final static int MSG_CHECK_FOCUS = 13; 3305 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3306 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3307 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3308 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3309 private final static int MSG_UPDATE_CONFIGURATION = 18; 3310 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3311 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3312 private final static int MSG_INVALIDATE_WORLD = 22; 3313 private final static int MSG_WINDOW_MOVED = 23; 3314 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 24; 3315 private final static int MSG_DISPATCH_WINDOW_SHOWN = 25; 3316 private final static int MSG_REQUEST_KEYBOARD_SHORTCUTS = 26; 3317 private final static int MSG_UPDATE_POINTER_ICON = 27; 3318 3319 final class ViewRootHandler extends Handler { 3320 @Override 3321 public String getMessageName(Message message) { 3322 switch (message.what) { 3323 case MSG_INVALIDATE: 3324 return "MSG_INVALIDATE"; 3325 case MSG_INVALIDATE_RECT: 3326 return "MSG_INVALIDATE_RECT"; 3327 case MSG_DIE: 3328 return "MSG_DIE"; 3329 case MSG_RESIZED: 3330 return "MSG_RESIZED"; 3331 case MSG_RESIZED_REPORT: 3332 return "MSG_RESIZED_REPORT"; 3333 case MSG_WINDOW_FOCUS_CHANGED: 3334 return "MSG_WINDOW_FOCUS_CHANGED"; 3335 case MSG_DISPATCH_INPUT_EVENT: 3336 return "MSG_DISPATCH_INPUT_EVENT"; 3337 case MSG_DISPATCH_APP_VISIBILITY: 3338 return "MSG_DISPATCH_APP_VISIBILITY"; 3339 case MSG_DISPATCH_GET_NEW_SURFACE: 3340 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3341 case MSG_DISPATCH_KEY_FROM_IME: 3342 return "MSG_DISPATCH_KEY_FROM_IME"; 3343 case MSG_FINISH_INPUT_CONNECTION: 3344 return "MSG_FINISH_INPUT_CONNECTION"; 3345 case MSG_CHECK_FOCUS: 3346 return "MSG_CHECK_FOCUS"; 3347 case MSG_CLOSE_SYSTEM_DIALOGS: 3348 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3349 case MSG_DISPATCH_DRAG_EVENT: 3350 return "MSG_DISPATCH_DRAG_EVENT"; 3351 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3352 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3353 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3354 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3355 case MSG_UPDATE_CONFIGURATION: 3356 return "MSG_UPDATE_CONFIGURATION"; 3357 case MSG_PROCESS_INPUT_EVENTS: 3358 return "MSG_PROCESS_INPUT_EVENTS"; 3359 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3360 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3361 case MSG_WINDOW_MOVED: 3362 return "MSG_WINDOW_MOVED"; 3363 case MSG_SYNTHESIZE_INPUT_EVENT: 3364 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3365 case MSG_DISPATCH_WINDOW_SHOWN: 3366 return "MSG_DISPATCH_WINDOW_SHOWN"; 3367 case MSG_UPDATE_POINTER_ICON: 3368 return "MSG_UPDATE_POINTER_ICON"; 3369 } 3370 return super.getMessageName(message); 3371 } 3372 3373 @Override 3374 public void handleMessage(Message msg) { 3375 switch (msg.what) { 3376 case MSG_INVALIDATE: 3377 ((View) msg.obj).invalidate(); 3378 break; 3379 case MSG_INVALIDATE_RECT: 3380 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3381 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3382 info.recycle(); 3383 break; 3384 case MSG_PROCESS_INPUT_EVENTS: 3385 mProcessInputEventsScheduled = false; 3386 doProcessInputEvents(); 3387 break; 3388 case MSG_DISPATCH_APP_VISIBILITY: 3389 handleAppVisibility(msg.arg1 != 0); 3390 break; 3391 case MSG_DISPATCH_GET_NEW_SURFACE: 3392 handleGetNewSurface(); 3393 break; 3394 case MSG_RESIZED: { 3395 // Recycled in the fall through... 3396 SomeArgs args = (SomeArgs) msg.obj; 3397 if (mWinFrame.equals(args.arg1) 3398 && mPendingOverscanInsets.equals(args.arg5) 3399 && mPendingContentInsets.equals(args.arg2) 3400 && mPendingStableInsets.equals(args.arg6) 3401 && mPendingVisibleInsets.equals(args.arg3) 3402 && mPendingOutsets.equals(args.arg7) 3403 && mPendingBackDropFrame.equals(args.arg8) 3404 && args.arg4 == null 3405 && args.argi1 == 0) { 3406 break; 3407 } 3408 } // fall through... 3409 case MSG_RESIZED_REPORT: 3410 if (mAdded) { 3411 SomeArgs args = (SomeArgs) msg.obj; 3412 3413 Configuration config = (Configuration) args.arg4; 3414 if (config != null) { 3415 updateConfiguration(config, false); 3416 } 3417 3418 mWinFrame.set((Rect) args.arg1); 3419 mPendingOverscanInsets.set((Rect) args.arg5); 3420 mPendingContentInsets.set((Rect) args.arg2); 3421 mPendingStableInsets.set((Rect) args.arg6); 3422 mPendingVisibleInsets.set((Rect) args.arg3); 3423 mPendingOutsets.set((Rect) args.arg7); 3424 mPendingBackDropFrame.set((Rect) args.arg8); 3425 mForceNextWindowRelayout = args.argi1 != 0; 3426 mPendingAlwaysConsumeNavBar = args.argi2 != 0; 3427 3428 args.recycle(); 3429 3430 if (msg.what == MSG_RESIZED_REPORT) { 3431 mReportNextDraw = true; 3432 } 3433 3434 if (mView != null) { 3435 forceLayout(mView); 3436 } 3437 3438 requestLayout(); 3439 } 3440 break; 3441 case MSG_WINDOW_MOVED: 3442 if (mAdded) { 3443 final int w = mWinFrame.width(); 3444 final int h = mWinFrame.height(); 3445 final int l = msg.arg1; 3446 final int t = msg.arg2; 3447 mWinFrame.left = l; 3448 mWinFrame.right = l + w; 3449 mWinFrame.top = t; 3450 mWinFrame.bottom = t + h; 3451 3452 mPendingBackDropFrame.set(mWinFrame); 3453 3454 // Suppress layouts during resizing - a correct layout will happen when resizing 3455 // is done, and this just increases system load. 3456 boolean isDockedDivider = mWindowAttributes.type == TYPE_DOCK_DIVIDER; 3457 boolean suppress = (mDragResizing && mResizeMode == RESIZE_MODE_DOCKED_DIVIDER) 3458 || isDockedDivider; 3459 if (!suppress) { 3460 if (mView != null) { 3461 forceLayout(mView); 3462 } 3463 requestLayout(); 3464 } else { 3465 maybeHandleWindowMove(mWinFrame); 3466 } 3467 } 3468 break; 3469 case MSG_WINDOW_FOCUS_CHANGED: { 3470 if (mAdded) { 3471 boolean hasWindowFocus = msg.arg1 != 0; 3472 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3473 3474 profileRendering(hasWindowFocus); 3475 3476 if (hasWindowFocus) { 3477 boolean inTouchMode = msg.arg2 != 0; 3478 ensureTouchModeLocally(inTouchMode); 3479 3480 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3481 mFullRedrawNeeded = true; 3482 try { 3483 final WindowManager.LayoutParams lp = mWindowAttributes; 3484 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3485 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3486 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 3487 } catch (OutOfResourcesException e) { 3488 Log.e(mTag, "OutOfResourcesException locking surface", e); 3489 try { 3490 if (!mWindowSession.outOfMemory(mWindow)) { 3491 Slog.w(mTag, "No processes killed for memory; killing self"); 3492 Process.killProcess(Process.myPid()); 3493 } 3494 } catch (RemoteException ex) { 3495 } 3496 // Retry in a bit. 3497 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3498 return; 3499 } 3500 } 3501 } 3502 3503 mLastWasImTarget = WindowManager.LayoutParams 3504 .mayUseInputMethod(mWindowAttributes.flags); 3505 3506 InputMethodManager imm = InputMethodManager.peekInstance(); 3507 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3508 imm.onPreWindowFocus(mView, hasWindowFocus); 3509 } 3510 if (mView != null) { 3511 mAttachInfo.mKeyDispatchState.reset(); 3512 mView.dispatchWindowFocusChanged(hasWindowFocus); 3513 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3514 } 3515 3516 // Note: must be done after the focus change callbacks, 3517 // so all of the view state is set up correctly. 3518 if (hasWindowFocus) { 3519 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3520 imm.onPostWindowFocus(mView, mView.findFocus(), 3521 mWindowAttributes.softInputMode, 3522 !mHasHadWindowFocus, mWindowAttributes.flags); 3523 } 3524 // Clear the forward bit. We can just do this directly, since 3525 // the window manager doesn't care about it. 3526 mWindowAttributes.softInputMode &= 3527 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3528 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3529 .softInputMode &= 3530 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3531 mHasHadWindowFocus = true; 3532 } else if (mCapturingView != null) { 3533 releasePointerCapture(mCapturingView); 3534 } 3535 } 3536 } break; 3537 case MSG_DIE: 3538 doDie(); 3539 break; 3540 case MSG_DISPATCH_INPUT_EVENT: { 3541 SomeArgs args = (SomeArgs)msg.obj; 3542 InputEvent event = (InputEvent)args.arg1; 3543 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3544 enqueueInputEvent(event, receiver, 0, true); 3545 args.recycle(); 3546 } break; 3547 case MSG_SYNTHESIZE_INPUT_EVENT: { 3548 InputEvent event = (InputEvent)msg.obj; 3549 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3550 } break; 3551 case MSG_DISPATCH_KEY_FROM_IME: { 3552 if (LOCAL_LOGV) Log.v( 3553 TAG, "Dispatching key " 3554 + msg.obj + " from IME to " + mView); 3555 KeyEvent event = (KeyEvent)msg.obj; 3556 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3557 // The IME is trying to say this event is from the 3558 // system! Bad bad bad! 3559 //noinspection UnusedAssignment 3560 event = KeyEvent.changeFlags(event, event.getFlags() & 3561 ~KeyEvent.FLAG_FROM_SYSTEM); 3562 } 3563 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3564 } break; 3565 case MSG_FINISH_INPUT_CONNECTION: { 3566 InputMethodManager imm = InputMethodManager.peekInstance(); 3567 if (imm != null) { 3568 imm.reportFinishInputConnection((InputConnection)msg.obj); 3569 } 3570 } break; 3571 case MSG_CHECK_FOCUS: { 3572 InputMethodManager imm = InputMethodManager.peekInstance(); 3573 if (imm != null) { 3574 imm.checkFocus(); 3575 } 3576 } break; 3577 case MSG_CLOSE_SYSTEM_DIALOGS: { 3578 if (mView != null) { 3579 mView.onCloseSystemDialogs((String)msg.obj); 3580 } 3581 } break; 3582 case MSG_DISPATCH_DRAG_EVENT: 3583 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3584 DragEvent event = (DragEvent)msg.obj; 3585 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3586 handleDragEvent(event); 3587 } break; 3588 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3589 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3590 } break; 3591 case MSG_UPDATE_CONFIGURATION: { 3592 Configuration config = (Configuration)msg.obj; 3593 if (config.isOtherSeqNewer(mLastConfiguration)) { 3594 config = mLastConfiguration; 3595 } 3596 updateConfiguration(config, false); 3597 } break; 3598 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3599 setAccessibilityFocus(null, null); 3600 } break; 3601 case MSG_INVALIDATE_WORLD: { 3602 if (mView != null) { 3603 invalidateWorld(mView); 3604 } 3605 } break; 3606 case MSG_DISPATCH_WINDOW_SHOWN: { 3607 handleDispatchWindowShown(); 3608 } break; 3609 case MSG_REQUEST_KEYBOARD_SHORTCUTS: { 3610 final IResultReceiver receiver = (IResultReceiver) msg.obj; 3611 final int deviceId = msg.arg1; 3612 handleRequestKeyboardShortcuts(receiver, deviceId); 3613 } break; 3614 case MSG_UPDATE_POINTER_ICON: { 3615 MotionEvent event = (MotionEvent) msg.obj; 3616 resetPointerIcon(event); 3617 } break; 3618 } 3619 } 3620 } 3621 3622 final ViewRootHandler mHandler = new ViewRootHandler(); 3623 3624 /** 3625 * Something in the current window tells us we need to change the touch mode. For 3626 * example, we are not in touch mode, and the user touches the screen. 3627 * 3628 * If the touch mode has changed, tell the window manager, and handle it locally. 3629 * 3630 * @param inTouchMode Whether we want to be in touch mode. 3631 * @return True if the touch mode changed and focus changed was changed as a result 3632 */ 3633 boolean ensureTouchMode(boolean inTouchMode) { 3634 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3635 + "touch mode is " + mAttachInfo.mInTouchMode); 3636 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3637 3638 // tell the window manager 3639 try { 3640 mWindowSession.setInTouchMode(inTouchMode); 3641 } catch (RemoteException e) { 3642 throw new RuntimeException(e); 3643 } 3644 3645 // handle the change 3646 return ensureTouchModeLocally(inTouchMode); 3647 } 3648 3649 /** 3650 * Ensure that the touch mode for this window is set, and if it is changing, 3651 * take the appropriate action. 3652 * @param inTouchMode Whether we want to be in touch mode. 3653 * @return True if the touch mode changed and focus changed was changed as a result 3654 */ 3655 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3656 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3657 + "touch mode is " + mAttachInfo.mInTouchMode); 3658 3659 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3660 3661 mAttachInfo.mInTouchMode = inTouchMode; 3662 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3663 3664 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3665 } 3666 3667 private boolean enterTouchMode() { 3668 if (mView != null && mView.hasFocus()) { 3669 // note: not relying on mFocusedView here because this could 3670 // be when the window is first being added, and mFocused isn't 3671 // set yet. 3672 final View focused = mView.findFocus(); 3673 if (focused != null && !focused.isFocusableInTouchMode()) { 3674 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3675 if (ancestorToTakeFocus != null) { 3676 // there is an ancestor that wants focus after its 3677 // descendants that is focusable in touch mode.. give it 3678 // focus 3679 return ancestorToTakeFocus.requestFocus(); 3680 } else { 3681 // There's nothing to focus. Clear and propagate through the 3682 // hierarchy, but don't attempt to place new focus. 3683 focused.clearFocusInternal(null, true, false); 3684 return true; 3685 } 3686 } 3687 } 3688 return false; 3689 } 3690 3691 /** 3692 * Find an ancestor of focused that wants focus after its descendants and is 3693 * focusable in touch mode. 3694 * @param focused The currently focused view. 3695 * @return An appropriate view, or null if no such view exists. 3696 */ 3697 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3698 ViewParent parent = focused.getParent(); 3699 while (parent instanceof ViewGroup) { 3700 final ViewGroup vgParent = (ViewGroup) parent; 3701 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3702 && vgParent.isFocusableInTouchMode()) { 3703 return vgParent; 3704 } 3705 if (vgParent.isRootNamespace()) { 3706 return null; 3707 } else { 3708 parent = vgParent.getParent(); 3709 } 3710 } 3711 return null; 3712 } 3713 3714 private boolean leaveTouchMode() { 3715 if (mView != null) { 3716 if (mView.hasFocus()) { 3717 View focusedView = mView.findFocus(); 3718 if (!(focusedView instanceof ViewGroup)) { 3719 // some view has focus, let it keep it 3720 return false; 3721 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3722 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3723 // some view group has focus, and doesn't prefer its children 3724 // over itself for focus, so let them keep it. 3725 return false; 3726 } 3727 } 3728 3729 // find the best view to give focus to in this brave new non-touch-mode 3730 // world 3731 final View focused = focusSearch(null, View.FOCUS_DOWN); 3732 if (focused != null) { 3733 return focused.requestFocus(View.FOCUS_DOWN); 3734 } 3735 } 3736 return false; 3737 } 3738 3739 /** 3740 * Base class for implementing a stage in the chain of responsibility 3741 * for processing input events. 3742 * <p> 3743 * Events are delivered to the stage by the {@link #deliver} method. The stage 3744 * then has the choice of finishing the event or forwarding it to the next stage. 3745 * </p> 3746 */ 3747 abstract class InputStage { 3748 private final InputStage mNext; 3749 3750 protected static final int FORWARD = 0; 3751 protected static final int FINISH_HANDLED = 1; 3752 protected static final int FINISH_NOT_HANDLED = 2; 3753 3754 /** 3755 * Creates an input stage. 3756 * @param next The next stage to which events should be forwarded. 3757 */ 3758 public InputStage(InputStage next) { 3759 mNext = next; 3760 } 3761 3762 /** 3763 * Delivers an event to be processed. 3764 */ 3765 public final void deliver(QueuedInputEvent q) { 3766 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3767 forward(q); 3768 } else if (shouldDropInputEvent(q)) { 3769 finish(q, false); 3770 } else { 3771 apply(q, onProcess(q)); 3772 } 3773 } 3774 3775 /** 3776 * Marks the the input event as finished then forwards it to the next stage. 3777 */ 3778 protected void finish(QueuedInputEvent q, boolean handled) { 3779 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3780 if (handled) { 3781 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3782 } 3783 forward(q); 3784 } 3785 3786 /** 3787 * Forwards the event to the next stage. 3788 */ 3789 protected void forward(QueuedInputEvent q) { 3790 onDeliverToNext(q); 3791 } 3792 3793 /** 3794 * Applies a result code from {@link #onProcess} to the specified event. 3795 */ 3796 protected void apply(QueuedInputEvent q, int result) { 3797 if (result == FORWARD) { 3798 forward(q); 3799 } else if (result == FINISH_HANDLED) { 3800 finish(q, true); 3801 } else if (result == FINISH_NOT_HANDLED) { 3802 finish(q, false); 3803 } else { 3804 throw new IllegalArgumentException("Invalid result: " + result); 3805 } 3806 } 3807 3808 /** 3809 * Called when an event is ready to be processed. 3810 * @return A result code indicating how the event was handled. 3811 */ 3812 protected int onProcess(QueuedInputEvent q) { 3813 return FORWARD; 3814 } 3815 3816 /** 3817 * Called when an event is being delivered to the next stage. 3818 */ 3819 protected void onDeliverToNext(QueuedInputEvent q) { 3820 if (DEBUG_INPUT_STAGES) { 3821 Log.v(mTag, "Done with " + getClass().getSimpleName() + ". " + q); 3822 } 3823 if (mNext != null) { 3824 mNext.deliver(q); 3825 } else { 3826 finishInputEvent(q); 3827 } 3828 } 3829 3830 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3831 if (mView == null || !mAdded) { 3832 Slog.w(mTag, "Dropping event due to root view being removed: " + q.mEvent); 3833 return true; 3834 } else if ((!mAttachInfo.mHasWindowFocus 3835 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) || mStopped 3836 || (mIsAmbientMode && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_BUTTON)) 3837 || (mPausedForTransition && !isBack(q.mEvent))) { 3838 // This is a focus event and the window doesn't currently have input focus or 3839 // has stopped. This could be an event that came back from the previous stage 3840 // but the window has lost focus or stopped in the meantime. 3841 if (isTerminalInputEvent(q.mEvent)) { 3842 // Don't drop terminal input events, however mark them as canceled. 3843 q.mEvent.cancel(); 3844 Slog.w(mTag, "Cancelling event due to no window focus: " + q.mEvent); 3845 return false; 3846 } 3847 3848 // Drop non-terminal input events. 3849 Slog.w(mTag, "Dropping event due to no window focus: " + q.mEvent); 3850 return true; 3851 } 3852 return false; 3853 } 3854 3855 void dump(String prefix, PrintWriter writer) { 3856 if (mNext != null) { 3857 mNext.dump(prefix, writer); 3858 } 3859 } 3860 3861 private boolean isBack(InputEvent event) { 3862 if (event instanceof KeyEvent) { 3863 return ((KeyEvent) event).getKeyCode() == KeyEvent.KEYCODE_BACK; 3864 } else { 3865 return false; 3866 } 3867 } 3868 } 3869 3870 /** 3871 * Base class for implementing an input pipeline stage that supports 3872 * asynchronous and out-of-order processing of input events. 3873 * <p> 3874 * In addition to what a normal input stage can do, an asynchronous 3875 * input stage may also defer an input event that has been delivered to it 3876 * and finish or forward it later. 3877 * </p> 3878 */ 3879 abstract class AsyncInputStage extends InputStage { 3880 private final String mTraceCounter; 3881 3882 private QueuedInputEvent mQueueHead; 3883 private QueuedInputEvent mQueueTail; 3884 private int mQueueLength; 3885 3886 protected static final int DEFER = 3; 3887 3888 /** 3889 * Creates an asynchronous input stage. 3890 * @param next The next stage to which events should be forwarded. 3891 * @param traceCounter The name of a counter to record the size of 3892 * the queue of pending events. 3893 */ 3894 public AsyncInputStage(InputStage next, String traceCounter) { 3895 super(next); 3896 mTraceCounter = traceCounter; 3897 } 3898 3899 /** 3900 * Marks the event as deferred, which is to say that it will be handled 3901 * asynchronously. The caller is responsible for calling {@link #forward} 3902 * or {@link #finish} later when it is done handling the event. 3903 */ 3904 protected void defer(QueuedInputEvent q) { 3905 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3906 enqueue(q); 3907 } 3908 3909 @Override 3910 protected void forward(QueuedInputEvent q) { 3911 // Clear the deferred flag. 3912 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3913 3914 // Fast path if the queue is empty. 3915 QueuedInputEvent curr = mQueueHead; 3916 if (curr == null) { 3917 super.forward(q); 3918 return; 3919 } 3920 3921 // Determine whether the event must be serialized behind any others 3922 // before it can be delivered to the next stage. This is done because 3923 // deferred events might be handled out of order by the stage. 3924 final int deviceId = q.mEvent.getDeviceId(); 3925 QueuedInputEvent prev = null; 3926 boolean blocked = false; 3927 while (curr != null && curr != q) { 3928 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3929 blocked = true; 3930 } 3931 prev = curr; 3932 curr = curr.mNext; 3933 } 3934 3935 // If the event is blocked, then leave it in the queue to be delivered later. 3936 // Note that the event might not yet be in the queue if it was not previously 3937 // deferred so we will enqueue it if needed. 3938 if (blocked) { 3939 if (curr == null) { 3940 enqueue(q); 3941 } 3942 return; 3943 } 3944 3945 // The event is not blocked. Deliver it immediately. 3946 if (curr != null) { 3947 curr = curr.mNext; 3948 dequeue(q, prev); 3949 } 3950 super.forward(q); 3951 3952 // Dequeuing this event may have unblocked successors. Deliver them. 3953 while (curr != null) { 3954 if (deviceId == curr.mEvent.getDeviceId()) { 3955 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3956 break; 3957 } 3958 QueuedInputEvent next = curr.mNext; 3959 dequeue(curr, prev); 3960 super.forward(curr); 3961 curr = next; 3962 } else { 3963 prev = curr; 3964 curr = curr.mNext; 3965 } 3966 } 3967 } 3968 3969 @Override 3970 protected void apply(QueuedInputEvent q, int result) { 3971 if (result == DEFER) { 3972 defer(q); 3973 } else { 3974 super.apply(q, result); 3975 } 3976 } 3977 3978 private void enqueue(QueuedInputEvent q) { 3979 if (mQueueTail == null) { 3980 mQueueHead = q; 3981 mQueueTail = q; 3982 } else { 3983 mQueueTail.mNext = q; 3984 mQueueTail = q; 3985 } 3986 3987 mQueueLength += 1; 3988 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3989 } 3990 3991 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3992 if (prev == null) { 3993 mQueueHead = q.mNext; 3994 } else { 3995 prev.mNext = q.mNext; 3996 } 3997 if (mQueueTail == q) { 3998 mQueueTail = prev; 3999 } 4000 q.mNext = null; 4001 4002 mQueueLength -= 1; 4003 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 4004 } 4005 4006 @Override 4007 void dump(String prefix, PrintWriter writer) { 4008 writer.print(prefix); 4009 writer.print(getClass().getName()); 4010 writer.print(": mQueueLength="); 4011 writer.println(mQueueLength); 4012 4013 super.dump(prefix, writer); 4014 } 4015 } 4016 4017 /** 4018 * Delivers pre-ime input events to a native activity. 4019 * Does not support pointer events. 4020 */ 4021 final class NativePreImeInputStage extends AsyncInputStage 4022 implements InputQueue.FinishedInputEventCallback { 4023 public NativePreImeInputStage(InputStage next, String traceCounter) { 4024 super(next, traceCounter); 4025 } 4026 4027 @Override 4028 protected int onProcess(QueuedInputEvent q) { 4029 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 4030 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 4031 return DEFER; 4032 } 4033 return FORWARD; 4034 } 4035 4036 @Override 4037 public void onFinishedInputEvent(Object token, boolean handled) { 4038 QueuedInputEvent q = (QueuedInputEvent)token; 4039 if (handled) { 4040 finish(q, true); 4041 return; 4042 } 4043 forward(q); 4044 } 4045 } 4046 4047 /** 4048 * Delivers pre-ime input events to the view hierarchy. 4049 * Does not support pointer events. 4050 */ 4051 final class ViewPreImeInputStage extends InputStage { 4052 public ViewPreImeInputStage(InputStage next) { 4053 super(next); 4054 } 4055 4056 @Override 4057 protected int onProcess(QueuedInputEvent q) { 4058 if (q.mEvent instanceof KeyEvent) { 4059 return processKeyEvent(q); 4060 } 4061 return FORWARD; 4062 } 4063 4064 private int processKeyEvent(QueuedInputEvent q) { 4065 final KeyEvent event = (KeyEvent)q.mEvent; 4066 if (mView.dispatchKeyEventPreIme(event)) { 4067 return FINISH_HANDLED; 4068 } 4069 return FORWARD; 4070 } 4071 } 4072 4073 /** 4074 * Delivers input events to the ime. 4075 * Does not support pointer events. 4076 */ 4077 final class ImeInputStage extends AsyncInputStage 4078 implements InputMethodManager.FinishedInputEventCallback { 4079 public ImeInputStage(InputStage next, String traceCounter) { 4080 super(next, traceCounter); 4081 } 4082 4083 @Override 4084 protected int onProcess(QueuedInputEvent q) { 4085 if (mLastWasImTarget && !isInLocalFocusMode()) { 4086 InputMethodManager imm = InputMethodManager.peekInstance(); 4087 if (imm != null) { 4088 final InputEvent event = q.mEvent; 4089 if (DEBUG_IMF) Log.v(mTag, "Sending input event to IME: " + event); 4090 int result = imm.dispatchInputEvent(event, q, this, mHandler); 4091 if (result == InputMethodManager.DISPATCH_HANDLED) { 4092 return FINISH_HANDLED; 4093 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 4094 // The IME could not handle it, so skip along to the next InputStage 4095 return FORWARD; 4096 } else { 4097 return DEFER; // callback will be invoked later 4098 } 4099 } 4100 } 4101 return FORWARD; 4102 } 4103 4104 @Override 4105 public void onFinishedInputEvent(Object token, boolean handled) { 4106 QueuedInputEvent q = (QueuedInputEvent)token; 4107 if (handled) { 4108 finish(q, true); 4109 return; 4110 } 4111 forward(q); 4112 } 4113 } 4114 4115 /** 4116 * Performs early processing of post-ime input events. 4117 */ 4118 final class EarlyPostImeInputStage extends InputStage { 4119 public EarlyPostImeInputStage(InputStage next) { 4120 super(next); 4121 } 4122 4123 @Override 4124 protected int onProcess(QueuedInputEvent q) { 4125 if (q.mEvent instanceof KeyEvent) { 4126 return processKeyEvent(q); 4127 } else { 4128 final int source = q.mEvent.getSource(); 4129 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4130 return processPointerEvent(q); 4131 } 4132 } 4133 return FORWARD; 4134 } 4135 4136 private int processKeyEvent(QueuedInputEvent q) { 4137 final KeyEvent event = (KeyEvent)q.mEvent; 4138 4139 // If the key's purpose is to exit touch mode then we consume it 4140 // and consider it handled. 4141 if (checkForLeavingTouchModeAndConsume(event)) { 4142 return FINISH_HANDLED; 4143 } 4144 4145 // Make sure the fallback event policy sees all keys that will be 4146 // delivered to the view hierarchy. 4147 mFallbackEventHandler.preDispatchKeyEvent(event); 4148 return FORWARD; 4149 } 4150 4151 private int processPointerEvent(QueuedInputEvent q) { 4152 final MotionEvent event = (MotionEvent)q.mEvent; 4153 4154 // Translate the pointer event for compatibility, if needed. 4155 if (mTranslator != null) { 4156 mTranslator.translateEventInScreenToAppWindow(event); 4157 } 4158 4159 // Enter touch mode on down or scroll. 4160 final int action = event.getAction(); 4161 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 4162 ensureTouchMode(true); 4163 } 4164 4165 // Offset the scroll position. 4166 if (mCurScrollY != 0) { 4167 event.offsetLocation(0, mCurScrollY); 4168 } 4169 4170 // Remember the touch position for possible drag-initiation. 4171 if (event.isTouchEvent()) { 4172 mLastTouchPoint.x = event.getRawX(); 4173 mLastTouchPoint.y = event.getRawY(); 4174 mLastTouchSource = event.getSource(); 4175 } 4176 return FORWARD; 4177 } 4178 } 4179 4180 /** 4181 * Delivers post-ime input events to a native activity. 4182 */ 4183 final class NativePostImeInputStage extends AsyncInputStage 4184 implements InputQueue.FinishedInputEventCallback { 4185 public NativePostImeInputStage(InputStage next, String traceCounter) { 4186 super(next, traceCounter); 4187 } 4188 4189 @Override 4190 protected int onProcess(QueuedInputEvent q) { 4191 if (mInputQueue != null) { 4192 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 4193 return DEFER; 4194 } 4195 return FORWARD; 4196 } 4197 4198 @Override 4199 public void onFinishedInputEvent(Object token, boolean handled) { 4200 QueuedInputEvent q = (QueuedInputEvent)token; 4201 if (handled) { 4202 finish(q, true); 4203 return; 4204 } 4205 forward(q); 4206 } 4207 } 4208 4209 /** 4210 * Delivers post-ime input events to the view hierarchy. 4211 */ 4212 final class ViewPostImeInputStage extends InputStage { 4213 public ViewPostImeInputStage(InputStage next) { 4214 super(next); 4215 } 4216 4217 @Override 4218 protected int onProcess(QueuedInputEvent q) { 4219 if (q.mEvent instanceof KeyEvent) { 4220 return processKeyEvent(q); 4221 } else { 4222 final int source = q.mEvent.getSource(); 4223 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4224 return processPointerEvent(q); 4225 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4226 return processTrackballEvent(q); 4227 } else { 4228 return processGenericMotionEvent(q); 4229 } 4230 } 4231 } 4232 4233 @Override 4234 protected void onDeliverToNext(QueuedInputEvent q) { 4235 if (mUnbufferedInputDispatch 4236 && q.mEvent instanceof MotionEvent 4237 && ((MotionEvent)q.mEvent).isTouchEvent() 4238 && isTerminalInputEvent(q.mEvent)) { 4239 mUnbufferedInputDispatch = false; 4240 scheduleConsumeBatchedInput(); 4241 } 4242 super.onDeliverToNext(q); 4243 } 4244 4245 private int processKeyEvent(QueuedInputEvent q) { 4246 final KeyEvent event = (KeyEvent)q.mEvent; 4247 4248 // Deliver the key to the view hierarchy. 4249 if (mView.dispatchKeyEvent(event)) { 4250 return FINISH_HANDLED; 4251 } 4252 4253 if (shouldDropInputEvent(q)) { 4254 return FINISH_NOT_HANDLED; 4255 } 4256 4257 // If the Control modifier is held, try to interpret the key as a shortcut. 4258 if (event.getAction() == KeyEvent.ACTION_DOWN 4259 && event.isCtrlPressed() 4260 && event.getRepeatCount() == 0 4261 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4262 if (mView.dispatchKeyShortcutEvent(event)) { 4263 return FINISH_HANDLED; 4264 } 4265 if (shouldDropInputEvent(q)) { 4266 return FINISH_NOT_HANDLED; 4267 } 4268 } 4269 4270 // Apply the fallback event policy. 4271 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4272 return FINISH_HANDLED; 4273 } 4274 if (shouldDropInputEvent(q)) { 4275 return FINISH_NOT_HANDLED; 4276 } 4277 4278 // Handle automatic focus changes. 4279 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4280 int direction = 0; 4281 switch (event.getKeyCode()) { 4282 case KeyEvent.KEYCODE_DPAD_LEFT: 4283 if (event.hasNoModifiers()) { 4284 direction = View.FOCUS_LEFT; 4285 } 4286 break; 4287 case KeyEvent.KEYCODE_DPAD_RIGHT: 4288 if (event.hasNoModifiers()) { 4289 direction = View.FOCUS_RIGHT; 4290 } 4291 break; 4292 case KeyEvent.KEYCODE_DPAD_UP: 4293 if (event.hasNoModifiers()) { 4294 direction = View.FOCUS_UP; 4295 } 4296 break; 4297 case KeyEvent.KEYCODE_DPAD_DOWN: 4298 if (event.hasNoModifiers()) { 4299 direction = View.FOCUS_DOWN; 4300 } 4301 break; 4302 case KeyEvent.KEYCODE_TAB: 4303 if (event.hasNoModifiers()) { 4304 direction = View.FOCUS_FORWARD; 4305 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4306 direction = View.FOCUS_BACKWARD; 4307 } 4308 break; 4309 } 4310 if (direction != 0) { 4311 View focused = mView.findFocus(); 4312 if (focused != null) { 4313 View v = focused.focusSearch(direction); 4314 if (v != null && v != focused) { 4315 // do the math the get the interesting rect 4316 // of previous focused into the coord system of 4317 // newly focused view 4318 focused.getFocusedRect(mTempRect); 4319 if (mView instanceof ViewGroup) { 4320 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4321 focused, mTempRect); 4322 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4323 v, mTempRect); 4324 } 4325 if (v.requestFocus(direction, mTempRect)) { 4326 playSoundEffect(SoundEffectConstants 4327 .getContantForFocusDirection(direction)); 4328 return FINISH_HANDLED; 4329 } 4330 } 4331 4332 // Give the focused view a last chance to handle the dpad key. 4333 if (mView.dispatchUnhandledMove(focused, direction)) { 4334 return FINISH_HANDLED; 4335 } 4336 } else { 4337 // find the best view to give focus to in this non-touch-mode with no-focus 4338 View v = focusSearch(null, direction); 4339 if (v != null && v.requestFocus(direction)) { 4340 return FINISH_HANDLED; 4341 } 4342 } 4343 } 4344 } 4345 return FORWARD; 4346 } 4347 4348 private int processPointerEvent(QueuedInputEvent q) { 4349 final MotionEvent event = (MotionEvent)q.mEvent; 4350 4351 mAttachInfo.mUnbufferedDispatchRequested = false; 4352 final View eventTarget = 4353 (event.isFromSource(InputDevice.SOURCE_MOUSE) && mCapturingView != null) ? 4354 mCapturingView : mView; 4355 mAttachInfo.mHandlingPointerEvent = true; 4356 boolean handled = eventTarget.dispatchPointerEvent(event); 4357 maybeUpdatePointerIcon(event); 4358 mAttachInfo.mHandlingPointerEvent = false; 4359 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4360 mUnbufferedInputDispatch = true; 4361 if (mConsumeBatchedInputScheduled) { 4362 scheduleConsumeBatchedInputImmediately(); 4363 } 4364 } 4365 return handled ? FINISH_HANDLED : FORWARD; 4366 } 4367 4368 private void maybeUpdatePointerIcon(MotionEvent event) { 4369 if (event.getPointerCount() == 1 4370 && event.isFromSource(InputDevice.SOURCE_MOUSE)) { 4371 if (event.getActionMasked() == MotionEvent.ACTION_HOVER_ENTER 4372 || event.getActionMasked() == MotionEvent.ACTION_HOVER_EXIT) { 4373 // Other apps or the window manager may change the icon shape outside of 4374 // this app, therefore the icon shape has to be reset on enter/exit event. 4375 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4376 } 4377 4378 if (event.getActionMasked() != MotionEvent.ACTION_HOVER_EXIT) { 4379 if (!updatePointerIcon(event) && 4380 event.getActionMasked() == MotionEvent.ACTION_HOVER_MOVE) { 4381 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4382 } 4383 } 4384 } 4385 } 4386 4387 private int processTrackballEvent(QueuedInputEvent q) { 4388 final MotionEvent event = (MotionEvent)q.mEvent; 4389 4390 if (mView.dispatchTrackballEvent(event)) { 4391 return FINISH_HANDLED; 4392 } 4393 return FORWARD; 4394 } 4395 4396 private int processGenericMotionEvent(QueuedInputEvent q) { 4397 final MotionEvent event = (MotionEvent)q.mEvent; 4398 4399 // Deliver the event to the view. 4400 if (mView.dispatchGenericMotionEvent(event)) { 4401 return FINISH_HANDLED; 4402 } 4403 return FORWARD; 4404 } 4405 } 4406 4407 private void resetPointerIcon(MotionEvent event) { 4408 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4409 updatePointerIcon(event); 4410 } 4411 4412 private boolean updatePointerIcon(MotionEvent event) { 4413 final float x = event.getX(); 4414 final float y = event.getY(); 4415 if (mView == null) { 4416 // E.g. click outside a popup to dismiss it 4417 Slog.d(mTag, "updatePointerIcon called after view was removed"); 4418 return false; 4419 } 4420 if (x < 0 || x >= mView.getWidth() || y < 0 || y >= mView.getHeight()) { 4421 // E.g. when moving window divider with mouse 4422 Slog.d(mTag, "updatePointerIcon called with position out of bounds"); 4423 return false; 4424 } 4425 final PointerIcon pointerIcon = mView.getPointerIcon(event, x, y); 4426 final int pointerShape = (pointerIcon != null) ? 4427 pointerIcon.getStyle() : PointerIcon.STYLE_DEFAULT; 4428 4429 if (mPointerIconShape != pointerShape) { 4430 mPointerIconShape = pointerShape; 4431 if (mPointerIconShape != PointerIcon.STYLE_CUSTOM) { 4432 mCustomPointerIcon = null; 4433 InputManager.getInstance().setPointerIconShape(pointerShape); 4434 return true; 4435 } 4436 } 4437 if (mPointerIconShape == PointerIcon.STYLE_CUSTOM && 4438 !pointerIcon.equals(mCustomPointerIcon)) { 4439 mCustomPointerIcon = pointerIcon; 4440 InputManager.getInstance().setCustomPointerIcon(mCustomPointerIcon); 4441 } 4442 return true; 4443 } 4444 4445 /** 4446 * Performs synthesis of new input events from unhandled input events. 4447 */ 4448 final class SyntheticInputStage extends InputStage { 4449 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4450 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4451 private final SyntheticTouchNavigationHandler mTouchNavigation = 4452 new SyntheticTouchNavigationHandler(); 4453 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4454 4455 public SyntheticInputStage() { 4456 super(null); 4457 } 4458 4459 @Override 4460 protected int onProcess(QueuedInputEvent q) { 4461 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4462 if (q.mEvent instanceof MotionEvent) { 4463 final MotionEvent event = (MotionEvent)q.mEvent; 4464 final int source = event.getSource(); 4465 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4466 mTrackball.process(event); 4467 return FINISH_HANDLED; 4468 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4469 mJoystick.process(event); 4470 return FINISH_HANDLED; 4471 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4472 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4473 mTouchNavigation.process(event); 4474 return FINISH_HANDLED; 4475 } 4476 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4477 mKeyboard.process((KeyEvent)q.mEvent); 4478 return FINISH_HANDLED; 4479 } 4480 4481 return FORWARD; 4482 } 4483 4484 @Override 4485 protected void onDeliverToNext(QueuedInputEvent q) { 4486 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4487 // Cancel related synthetic events if any prior stage has handled the event. 4488 if (q.mEvent instanceof MotionEvent) { 4489 final MotionEvent event = (MotionEvent)q.mEvent; 4490 final int source = event.getSource(); 4491 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4492 mTrackball.cancel(event); 4493 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4494 mJoystick.cancel(event); 4495 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4496 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4497 mTouchNavigation.cancel(event); 4498 } 4499 } 4500 } 4501 super.onDeliverToNext(q); 4502 } 4503 } 4504 4505 /** 4506 * Creates dpad events from unhandled trackball movements. 4507 */ 4508 final class SyntheticTrackballHandler { 4509 private final TrackballAxis mX = new TrackballAxis(); 4510 private final TrackballAxis mY = new TrackballAxis(); 4511 private long mLastTime; 4512 4513 public void process(MotionEvent event) { 4514 // Translate the trackball event into DPAD keys and try to deliver those. 4515 long curTime = SystemClock.uptimeMillis(); 4516 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4517 // It has been too long since the last movement, 4518 // so restart at the beginning. 4519 mX.reset(0); 4520 mY.reset(0); 4521 mLastTime = curTime; 4522 } 4523 4524 final int action = event.getAction(); 4525 final int metaState = event.getMetaState(); 4526 switch (action) { 4527 case MotionEvent.ACTION_DOWN: 4528 mX.reset(2); 4529 mY.reset(2); 4530 enqueueInputEvent(new KeyEvent(curTime, curTime, 4531 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4532 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4533 InputDevice.SOURCE_KEYBOARD)); 4534 break; 4535 case MotionEvent.ACTION_UP: 4536 mX.reset(2); 4537 mY.reset(2); 4538 enqueueInputEvent(new KeyEvent(curTime, curTime, 4539 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4540 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4541 InputDevice.SOURCE_KEYBOARD)); 4542 break; 4543 } 4544 4545 if (DEBUG_TRACKBALL) Log.v(mTag, "TB X=" + mX.position + " step=" 4546 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4547 + " move=" + event.getX() 4548 + " / Y=" + mY.position + " step=" 4549 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4550 + " move=" + event.getY()); 4551 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4552 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4553 4554 // Generate DPAD events based on the trackball movement. 4555 // We pick the axis that has moved the most as the direction of 4556 // the DPAD. When we generate DPAD events for one axis, then the 4557 // other axis is reset -- we don't want to perform DPAD jumps due 4558 // to slight movements in the trackball when making major movements 4559 // along the other axis. 4560 int keycode = 0; 4561 int movement = 0; 4562 float accel = 1; 4563 if (xOff > yOff) { 4564 movement = mX.generate(); 4565 if (movement != 0) { 4566 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4567 : KeyEvent.KEYCODE_DPAD_LEFT; 4568 accel = mX.acceleration; 4569 mY.reset(2); 4570 } 4571 } else if (yOff > 0) { 4572 movement = mY.generate(); 4573 if (movement != 0) { 4574 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4575 : KeyEvent.KEYCODE_DPAD_UP; 4576 accel = mY.acceleration; 4577 mX.reset(2); 4578 } 4579 } 4580 4581 if (keycode != 0) { 4582 if (movement < 0) movement = -movement; 4583 int accelMovement = (int)(movement * accel); 4584 if (DEBUG_TRACKBALL) Log.v(mTag, "Move: movement=" + movement 4585 + " accelMovement=" + accelMovement 4586 + " accel=" + accel); 4587 if (accelMovement > movement) { 4588 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4589 + keycode); 4590 movement--; 4591 int repeatCount = accelMovement - movement; 4592 enqueueInputEvent(new KeyEvent(curTime, curTime, 4593 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4594 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4595 InputDevice.SOURCE_KEYBOARD)); 4596 } 4597 while (movement > 0) { 4598 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4599 + keycode); 4600 movement--; 4601 curTime = SystemClock.uptimeMillis(); 4602 enqueueInputEvent(new KeyEvent(curTime, curTime, 4603 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4604 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4605 InputDevice.SOURCE_KEYBOARD)); 4606 enqueueInputEvent(new KeyEvent(curTime, curTime, 4607 KeyEvent.ACTION_UP, keycode, 0, metaState, 4608 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4609 InputDevice.SOURCE_KEYBOARD)); 4610 } 4611 mLastTime = curTime; 4612 } 4613 } 4614 4615 public void cancel(MotionEvent event) { 4616 mLastTime = Integer.MIN_VALUE; 4617 4618 // If we reach this, we consumed a trackball event. 4619 // Because we will not translate the trackball event into a key event, 4620 // touch mode will not exit, so we exit touch mode here. 4621 if (mView != null && mAdded) { 4622 ensureTouchMode(false); 4623 } 4624 } 4625 } 4626 4627 /** 4628 * Maintains state information for a single trackball axis, generating 4629 * discrete (DPAD) movements based on raw trackball motion. 4630 */ 4631 static final class TrackballAxis { 4632 /** 4633 * The maximum amount of acceleration we will apply. 4634 */ 4635 static final float MAX_ACCELERATION = 20; 4636 4637 /** 4638 * The maximum amount of time (in milliseconds) between events in order 4639 * for us to consider the user to be doing fast trackball movements, 4640 * and thus apply an acceleration. 4641 */ 4642 static final long FAST_MOVE_TIME = 150; 4643 4644 /** 4645 * Scaling factor to the time (in milliseconds) between events to how 4646 * much to multiple/divide the current acceleration. When movement 4647 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4648 * FAST_MOVE_TIME it divides it. 4649 */ 4650 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4651 4652 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4653 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4654 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4655 4656 float position; 4657 float acceleration = 1; 4658 long lastMoveTime = 0; 4659 int step; 4660 int dir; 4661 int nonAccelMovement; 4662 4663 void reset(int _step) { 4664 position = 0; 4665 acceleration = 1; 4666 lastMoveTime = 0; 4667 step = _step; 4668 dir = 0; 4669 } 4670 4671 /** 4672 * Add trackball movement into the state. If the direction of movement 4673 * has been reversed, the state is reset before adding the 4674 * movement (so that you don't have to compensate for any previously 4675 * collected movement before see the result of the movement in the 4676 * new direction). 4677 * 4678 * @return Returns the absolute value of the amount of movement 4679 * collected so far. 4680 */ 4681 float collect(float off, long time, String axis) { 4682 long normTime; 4683 if (off > 0) { 4684 normTime = (long)(off * FAST_MOVE_TIME); 4685 if (dir < 0) { 4686 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4687 position = 0; 4688 step = 0; 4689 acceleration = 1; 4690 lastMoveTime = 0; 4691 } 4692 dir = 1; 4693 } else if (off < 0) { 4694 normTime = (long)((-off) * FAST_MOVE_TIME); 4695 if (dir > 0) { 4696 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4697 position = 0; 4698 step = 0; 4699 acceleration = 1; 4700 lastMoveTime = 0; 4701 } 4702 dir = -1; 4703 } else { 4704 normTime = 0; 4705 } 4706 4707 // The number of milliseconds between each movement that is 4708 // considered "normal" and will not result in any acceleration 4709 // or deceleration, scaled by the offset we have here. 4710 if (normTime > 0) { 4711 long delta = time - lastMoveTime; 4712 lastMoveTime = time; 4713 float acc = acceleration; 4714 if (delta < normTime) { 4715 // The user is scrolling rapidly, so increase acceleration. 4716 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4717 if (scale > 1) acc *= scale; 4718 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4719 + off + " normTime=" + normTime + " delta=" + delta 4720 + " scale=" + scale + " acc=" + acc); 4721 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4722 } else { 4723 // The user is scrolling slowly, so decrease acceleration. 4724 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4725 if (scale > 1) acc /= scale; 4726 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4727 + off + " normTime=" + normTime + " delta=" + delta 4728 + " scale=" + scale + " acc=" + acc); 4729 acceleration = acc > 1 ? acc : 1; 4730 } 4731 } 4732 position += off; 4733 return Math.abs(position); 4734 } 4735 4736 /** 4737 * Generate the number of discrete movement events appropriate for 4738 * the currently collected trackball movement. 4739 * 4740 * @return Returns the number of discrete movements, either positive 4741 * or negative, or 0 if there is not enough trackball movement yet 4742 * for a discrete movement. 4743 */ 4744 int generate() { 4745 int movement = 0; 4746 nonAccelMovement = 0; 4747 do { 4748 final int dir = position >= 0 ? 1 : -1; 4749 switch (step) { 4750 // If we are going to execute the first step, then we want 4751 // to do this as soon as possible instead of waiting for 4752 // a full movement, in order to make things look responsive. 4753 case 0: 4754 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4755 return movement; 4756 } 4757 movement += dir; 4758 nonAccelMovement += dir; 4759 step = 1; 4760 break; 4761 // If we have generated the first movement, then we need 4762 // to wait for the second complete trackball motion before 4763 // generating the second discrete movement. 4764 case 1: 4765 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4766 return movement; 4767 } 4768 movement += dir; 4769 nonAccelMovement += dir; 4770 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4771 step = 2; 4772 break; 4773 // After the first two, we generate discrete movements 4774 // consistently with the trackball, applying an acceleration 4775 // if the trackball is moving quickly. This is a simple 4776 // acceleration on top of what we already compute based 4777 // on how quickly the wheel is being turned, to apply 4778 // a longer increasing acceleration to continuous movement 4779 // in one direction. 4780 default: 4781 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4782 return movement; 4783 } 4784 movement += dir; 4785 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4786 float acc = acceleration; 4787 acc *= 1.1f; 4788 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4789 break; 4790 } 4791 } while (true); 4792 } 4793 } 4794 4795 /** 4796 * Creates dpad events from unhandled joystick movements. 4797 */ 4798 final class SyntheticJoystickHandler extends Handler { 4799 private final static String TAG = "SyntheticJoystickHandler"; 4800 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4801 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4802 4803 private int mLastXDirection; 4804 private int mLastYDirection; 4805 private int mLastXKeyCode; 4806 private int mLastYKeyCode; 4807 4808 public SyntheticJoystickHandler() { 4809 super(true); 4810 } 4811 4812 @Override 4813 public void handleMessage(Message msg) { 4814 switch (msg.what) { 4815 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4816 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4817 KeyEvent oldEvent = (KeyEvent)msg.obj; 4818 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4819 SystemClock.uptimeMillis(), 4820 oldEvent.getRepeatCount() + 1); 4821 if (mAttachInfo.mHasWindowFocus) { 4822 enqueueInputEvent(e); 4823 Message m = obtainMessage(msg.what, e); 4824 m.setAsynchronous(true); 4825 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4826 } 4827 } break; 4828 } 4829 } 4830 4831 public void process(MotionEvent event) { 4832 switch(event.getActionMasked()) { 4833 case MotionEvent.ACTION_CANCEL: 4834 cancel(event); 4835 break; 4836 case MotionEvent.ACTION_MOVE: 4837 update(event, true); 4838 break; 4839 default: 4840 Log.w(mTag, "Unexpected action: " + event.getActionMasked()); 4841 } 4842 } 4843 4844 private void cancel(MotionEvent event) { 4845 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4846 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4847 update(event, false); 4848 } 4849 4850 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4851 final long time = event.getEventTime(); 4852 final int metaState = event.getMetaState(); 4853 final int deviceId = event.getDeviceId(); 4854 final int source = event.getSource(); 4855 4856 int xDirection = joystickAxisValueToDirection( 4857 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4858 if (xDirection == 0) { 4859 xDirection = joystickAxisValueToDirection(event.getX()); 4860 } 4861 4862 int yDirection = joystickAxisValueToDirection( 4863 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4864 if (yDirection == 0) { 4865 yDirection = joystickAxisValueToDirection(event.getY()); 4866 } 4867 4868 if (xDirection != mLastXDirection) { 4869 if (mLastXKeyCode != 0) { 4870 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4871 enqueueInputEvent(new KeyEvent(time, time, 4872 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4873 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4874 mLastXKeyCode = 0; 4875 } 4876 4877 mLastXDirection = xDirection; 4878 4879 if (xDirection != 0 && synthesizeNewKeys) { 4880 mLastXKeyCode = xDirection > 0 4881 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4882 final KeyEvent e = new KeyEvent(time, time, 4883 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4884 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4885 enqueueInputEvent(e); 4886 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4887 m.setAsynchronous(true); 4888 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4889 } 4890 } 4891 4892 if (yDirection != mLastYDirection) { 4893 if (mLastYKeyCode != 0) { 4894 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4895 enqueueInputEvent(new KeyEvent(time, time, 4896 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4897 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4898 mLastYKeyCode = 0; 4899 } 4900 4901 mLastYDirection = yDirection; 4902 4903 if (yDirection != 0 && synthesizeNewKeys) { 4904 mLastYKeyCode = yDirection > 0 4905 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4906 final KeyEvent e = new KeyEvent(time, time, 4907 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4908 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4909 enqueueInputEvent(e); 4910 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4911 m.setAsynchronous(true); 4912 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4913 } 4914 } 4915 } 4916 4917 private int joystickAxisValueToDirection(float value) { 4918 if (value >= 0.5f) { 4919 return 1; 4920 } else if (value <= -0.5f) { 4921 return -1; 4922 } else { 4923 return 0; 4924 } 4925 } 4926 } 4927 4928 /** 4929 * Creates dpad events from unhandled touch navigation movements. 4930 */ 4931 final class SyntheticTouchNavigationHandler extends Handler { 4932 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4933 private static final boolean LOCAL_DEBUG = false; 4934 4935 // Assumed nominal width and height in millimeters of a touch navigation pad, 4936 // if no resolution information is available from the input system. 4937 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4938 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4939 4940 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4941 4942 // The nominal distance traveled to move by one unit. 4943 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4944 4945 // Minimum and maximum fling velocity in ticks per second. 4946 // The minimum velocity should be set such that we perform enough ticks per 4947 // second that the fling appears to be fluid. For example, if we set the minimum 4948 // to 2 ticks per second, then there may be up to half a second delay between the next 4949 // to last and last ticks which is noticeably discrete and jerky. This value should 4950 // probably not be set to anything less than about 4. 4951 // If fling accuracy is a problem then consider tuning the tick distance instead. 4952 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4953 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4954 4955 // Fling velocity decay factor applied after each new key is emitted. 4956 // This parameter controls the deceleration and overall duration of the fling. 4957 // The fling stops automatically when its velocity drops below the minimum 4958 // fling velocity defined above. 4959 private static final float FLING_TICK_DECAY = 0.8f; 4960 4961 /* The input device that we are tracking. */ 4962 4963 private int mCurrentDeviceId = -1; 4964 private int mCurrentSource; 4965 private boolean mCurrentDeviceSupported; 4966 4967 /* Configuration for the current input device. */ 4968 4969 // The scaled tick distance. A movement of this amount should generally translate 4970 // into a single dpad event in a given direction. 4971 private float mConfigTickDistance; 4972 4973 // The minimum and maximum scaled fling velocity. 4974 private float mConfigMinFlingVelocity; 4975 private float mConfigMaxFlingVelocity; 4976 4977 /* Tracking state. */ 4978 4979 // The velocity tracker for detecting flings. 4980 private VelocityTracker mVelocityTracker; 4981 4982 // The active pointer id, or -1 if none. 4983 private int mActivePointerId = -1; 4984 4985 // Location where tracking started. 4986 private float mStartX; 4987 private float mStartY; 4988 4989 // Most recently observed position. 4990 private float mLastX; 4991 private float mLastY; 4992 4993 // Accumulated movement delta since the last direction key was sent. 4994 private float mAccumulatedX; 4995 private float mAccumulatedY; 4996 4997 // Set to true if any movement was delivered to the app. 4998 // Implies that tap slop was exceeded. 4999 private boolean mConsumedMovement; 5000 5001 // The most recently sent key down event. 5002 // The keycode remains set until the direction changes or a fling ends 5003 // so that repeated key events may be generated as required. 5004 private long mPendingKeyDownTime; 5005 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5006 private int mPendingKeyRepeatCount; 5007 private int mPendingKeyMetaState; 5008 5009 // The current fling velocity while a fling is in progress. 5010 private boolean mFlinging; 5011 private float mFlingVelocity; 5012 5013 public SyntheticTouchNavigationHandler() { 5014 super(true); 5015 } 5016 5017 public void process(MotionEvent event) { 5018 // Update the current device information. 5019 final long time = event.getEventTime(); 5020 final int deviceId = event.getDeviceId(); 5021 final int source = event.getSource(); 5022 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 5023 finishKeys(time); 5024 finishTracking(time); 5025 mCurrentDeviceId = deviceId; 5026 mCurrentSource = source; 5027 mCurrentDeviceSupported = false; 5028 InputDevice device = event.getDevice(); 5029 if (device != null) { 5030 // In order to support an input device, we must know certain 5031 // characteristics about it, such as its size and resolution. 5032 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 5033 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 5034 if (xRange != null && yRange != null) { 5035 mCurrentDeviceSupported = true; 5036 5037 // Infer the resolution if it not actually known. 5038 float xRes = xRange.getResolution(); 5039 if (xRes <= 0) { 5040 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 5041 } 5042 float yRes = yRange.getResolution(); 5043 if (yRes <= 0) { 5044 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 5045 } 5046 float nominalRes = (xRes + yRes) * 0.5f; 5047 5048 // Precompute all of the configuration thresholds we will need. 5049 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 5050 mConfigMinFlingVelocity = 5051 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5052 mConfigMaxFlingVelocity = 5053 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5054 5055 if (LOCAL_DEBUG) { 5056 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 5057 + " (" + Integer.toHexString(mCurrentSource) + "): " 5058 + ", mConfigTickDistance=" + mConfigTickDistance 5059 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 5060 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 5061 } 5062 } 5063 } 5064 } 5065 if (!mCurrentDeviceSupported) { 5066 return; 5067 } 5068 5069 // Handle the event. 5070 final int action = event.getActionMasked(); 5071 switch (action) { 5072 case MotionEvent.ACTION_DOWN: { 5073 boolean caughtFling = mFlinging; 5074 finishKeys(time); 5075 finishTracking(time); 5076 mActivePointerId = event.getPointerId(0); 5077 mVelocityTracker = VelocityTracker.obtain(); 5078 mVelocityTracker.addMovement(event); 5079 mStartX = event.getX(); 5080 mStartY = event.getY(); 5081 mLastX = mStartX; 5082 mLastY = mStartY; 5083 mAccumulatedX = 0; 5084 mAccumulatedY = 0; 5085 5086 // If we caught a fling, then pretend that the tap slop has already 5087 // been exceeded to suppress taps whose only purpose is to stop the fling. 5088 mConsumedMovement = caughtFling; 5089 break; 5090 } 5091 5092 case MotionEvent.ACTION_MOVE: 5093 case MotionEvent.ACTION_UP: { 5094 if (mActivePointerId < 0) { 5095 break; 5096 } 5097 final int index = event.findPointerIndex(mActivePointerId); 5098 if (index < 0) { 5099 finishKeys(time); 5100 finishTracking(time); 5101 break; 5102 } 5103 5104 mVelocityTracker.addMovement(event); 5105 final float x = event.getX(index); 5106 final float y = event.getY(index); 5107 mAccumulatedX += x - mLastX; 5108 mAccumulatedY += y - mLastY; 5109 mLastX = x; 5110 mLastY = y; 5111 5112 // Consume any accumulated movement so far. 5113 final int metaState = event.getMetaState(); 5114 consumeAccumulatedMovement(time, metaState); 5115 5116 // Detect taps and flings. 5117 if (action == MotionEvent.ACTION_UP) { 5118 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5119 // It might be a fling. 5120 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 5121 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 5122 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 5123 if (!startFling(time, vx, vy)) { 5124 finishKeys(time); 5125 } 5126 } 5127 finishTracking(time); 5128 } 5129 break; 5130 } 5131 5132 case MotionEvent.ACTION_CANCEL: { 5133 finishKeys(time); 5134 finishTracking(time); 5135 break; 5136 } 5137 } 5138 } 5139 5140 public void cancel(MotionEvent event) { 5141 if (mCurrentDeviceId == event.getDeviceId() 5142 && mCurrentSource == event.getSource()) { 5143 final long time = event.getEventTime(); 5144 finishKeys(time); 5145 finishTracking(time); 5146 } 5147 } 5148 5149 private void finishKeys(long time) { 5150 cancelFling(); 5151 sendKeyUp(time); 5152 } 5153 5154 private void finishTracking(long time) { 5155 if (mActivePointerId >= 0) { 5156 mActivePointerId = -1; 5157 mVelocityTracker.recycle(); 5158 mVelocityTracker = null; 5159 } 5160 } 5161 5162 private void consumeAccumulatedMovement(long time, int metaState) { 5163 final float absX = Math.abs(mAccumulatedX); 5164 final float absY = Math.abs(mAccumulatedY); 5165 if (absX >= absY) { 5166 if (absX >= mConfigTickDistance) { 5167 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 5168 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 5169 mAccumulatedY = 0; 5170 mConsumedMovement = true; 5171 } 5172 } else { 5173 if (absY >= mConfigTickDistance) { 5174 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 5175 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 5176 mAccumulatedX = 0; 5177 mConsumedMovement = true; 5178 } 5179 } 5180 } 5181 5182 private float consumeAccumulatedMovement(long time, int metaState, 5183 float accumulator, int negativeKeyCode, int positiveKeyCode) { 5184 while (accumulator <= -mConfigTickDistance) { 5185 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 5186 accumulator += mConfigTickDistance; 5187 } 5188 while (accumulator >= mConfigTickDistance) { 5189 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 5190 accumulator -= mConfigTickDistance; 5191 } 5192 return accumulator; 5193 } 5194 5195 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 5196 if (mPendingKeyCode != keyCode) { 5197 sendKeyUp(time); 5198 mPendingKeyDownTime = time; 5199 mPendingKeyCode = keyCode; 5200 mPendingKeyRepeatCount = 0; 5201 } else { 5202 mPendingKeyRepeatCount += 1; 5203 } 5204 mPendingKeyMetaState = metaState; 5205 5206 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 5207 // but it doesn't quite make sense when simulating the events in this way. 5208 if (LOCAL_DEBUG) { 5209 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 5210 + ", repeatCount=" + mPendingKeyRepeatCount 5211 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5212 } 5213 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5214 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 5215 mPendingKeyMetaState, mCurrentDeviceId, 5216 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 5217 } 5218 5219 private void sendKeyUp(long time) { 5220 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5221 if (LOCAL_DEBUG) { 5222 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 5223 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5224 } 5225 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5226 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 5227 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 5228 mCurrentSource)); 5229 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5230 } 5231 } 5232 5233 private boolean startFling(long time, float vx, float vy) { 5234 if (LOCAL_DEBUG) { 5235 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 5236 + ", min=" + mConfigMinFlingVelocity); 5237 } 5238 5239 // Flings must be oriented in the same direction as the preceding movements. 5240 switch (mPendingKeyCode) { 5241 case KeyEvent.KEYCODE_DPAD_LEFT: 5242 if (-vx >= mConfigMinFlingVelocity 5243 && Math.abs(vy) < mConfigMinFlingVelocity) { 5244 mFlingVelocity = -vx; 5245 break; 5246 } 5247 return false; 5248 5249 case KeyEvent.KEYCODE_DPAD_RIGHT: 5250 if (vx >= mConfigMinFlingVelocity 5251 && Math.abs(vy) < mConfigMinFlingVelocity) { 5252 mFlingVelocity = vx; 5253 break; 5254 } 5255 return false; 5256 5257 case KeyEvent.KEYCODE_DPAD_UP: 5258 if (-vy >= mConfigMinFlingVelocity 5259 && Math.abs(vx) < mConfigMinFlingVelocity) { 5260 mFlingVelocity = -vy; 5261 break; 5262 } 5263 return false; 5264 5265 case KeyEvent.KEYCODE_DPAD_DOWN: 5266 if (vy >= mConfigMinFlingVelocity 5267 && Math.abs(vx) < mConfigMinFlingVelocity) { 5268 mFlingVelocity = vy; 5269 break; 5270 } 5271 return false; 5272 } 5273 5274 // Post the first fling event. 5275 mFlinging = postFling(time); 5276 return mFlinging; 5277 } 5278 5279 private boolean postFling(long time) { 5280 // The idea here is to estimate the time when the pointer would have 5281 // traveled one tick distance unit given the current fling velocity. 5282 // This effect creates continuity of motion. 5283 if (mFlingVelocity >= mConfigMinFlingVelocity) { 5284 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 5285 postAtTime(mFlingRunnable, time + delay); 5286 if (LOCAL_DEBUG) { 5287 Log.d(LOCAL_TAG, "Posted fling: velocity=" 5288 + mFlingVelocity + ", delay=" + delay 5289 + ", keyCode=" + mPendingKeyCode); 5290 } 5291 return true; 5292 } 5293 return false; 5294 } 5295 5296 private void cancelFling() { 5297 if (mFlinging) { 5298 removeCallbacks(mFlingRunnable); 5299 mFlinging = false; 5300 } 5301 } 5302 5303 private final Runnable mFlingRunnable = new Runnable() { 5304 @Override 5305 public void run() { 5306 final long time = SystemClock.uptimeMillis(); 5307 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5308 mFlingVelocity *= FLING_TICK_DECAY; 5309 if (!postFling(time)) { 5310 mFlinging = false; 5311 finishKeys(time); 5312 } 5313 } 5314 }; 5315 } 5316 5317 final class SyntheticKeyboardHandler { 5318 public void process(KeyEvent event) { 5319 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5320 return; 5321 } 5322 5323 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5324 final int keyCode = event.getKeyCode(); 5325 final int metaState = event.getMetaState(); 5326 5327 // Check for fallback actions specified by the key character map. 5328 KeyCharacterMap.FallbackAction fallbackAction = 5329 kcm.getFallbackAction(keyCode, metaState); 5330 if (fallbackAction != null) { 5331 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5332 KeyEvent fallbackEvent = KeyEvent.obtain( 5333 event.getDownTime(), event.getEventTime(), 5334 event.getAction(), fallbackAction.keyCode, 5335 event.getRepeatCount(), fallbackAction.metaState, 5336 event.getDeviceId(), event.getScanCode(), 5337 flags, event.getSource(), null); 5338 fallbackAction.recycle(); 5339 enqueueInputEvent(fallbackEvent); 5340 } 5341 } 5342 } 5343 5344 /** 5345 * Returns true if the key is used for keyboard navigation. 5346 * @param keyEvent The key event. 5347 * @return True if the key is used for keyboard navigation. 5348 */ 5349 private static boolean isNavigationKey(KeyEvent keyEvent) { 5350 switch (keyEvent.getKeyCode()) { 5351 case KeyEvent.KEYCODE_DPAD_LEFT: 5352 case KeyEvent.KEYCODE_DPAD_RIGHT: 5353 case KeyEvent.KEYCODE_DPAD_UP: 5354 case KeyEvent.KEYCODE_DPAD_DOWN: 5355 case KeyEvent.KEYCODE_DPAD_CENTER: 5356 case KeyEvent.KEYCODE_PAGE_UP: 5357 case KeyEvent.KEYCODE_PAGE_DOWN: 5358 case KeyEvent.KEYCODE_MOVE_HOME: 5359 case KeyEvent.KEYCODE_MOVE_END: 5360 case KeyEvent.KEYCODE_TAB: 5361 case KeyEvent.KEYCODE_SPACE: 5362 case KeyEvent.KEYCODE_ENTER: 5363 return true; 5364 } 5365 return false; 5366 } 5367 5368 /** 5369 * Returns true if the key is used for typing. 5370 * @param keyEvent The key event. 5371 * @return True if the key is used for typing. 5372 */ 5373 private static boolean isTypingKey(KeyEvent keyEvent) { 5374 return keyEvent.getUnicodeChar() > 0; 5375 } 5376 5377 /** 5378 * See if the key event means we should leave touch mode (and leave touch mode if so). 5379 * @param event The key event. 5380 * @return Whether this key event should be consumed (meaning the act of 5381 * leaving touch mode alone is considered the event). 5382 */ 5383 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5384 // Only relevant in touch mode. 5385 if (!mAttachInfo.mInTouchMode) { 5386 return false; 5387 } 5388 5389 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5390 final int action = event.getAction(); 5391 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5392 return false; 5393 } 5394 5395 // Don't leave touch mode if the IME told us not to. 5396 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5397 return false; 5398 } 5399 5400 // If the key can be used for keyboard navigation then leave touch mode 5401 // and select a focused view if needed (in ensureTouchMode). 5402 // When a new focused view is selected, we consume the navigation key because 5403 // navigation doesn't make much sense unless a view already has focus so 5404 // the key's purpose is to set focus. 5405 if (isNavigationKey(event)) { 5406 return ensureTouchMode(false); 5407 } 5408 5409 // If the key can be used for typing then leave touch mode 5410 // and select a focused view if needed (in ensureTouchMode). 5411 // Always allow the view to process the typing key. 5412 if (isTypingKey(event)) { 5413 ensureTouchMode(false); 5414 return false; 5415 } 5416 5417 return false; 5418 } 5419 5420 /* drag/drop */ 5421 void setLocalDragState(Object obj) { 5422 mLocalDragState = obj; 5423 } 5424 5425 private void handleDragEvent(DragEvent event) { 5426 // From the root, only drag start/end/location are dispatched. entered/exited 5427 // are determined and dispatched by the viewgroup hierarchy, who then report 5428 // that back here for ultimate reporting back to the framework. 5429 if (mView != null && mAdded) { 5430 final int what = event.mAction; 5431 5432 if (what == DragEvent.ACTION_DRAG_EXITED) { 5433 // A direct EXITED event means that the window manager knows we've just crossed 5434 // a window boundary, so the current drag target within this one must have 5435 // just been exited. Send it the usual notifications and then we're done 5436 // for now. 5437 mView.dispatchDragEvent(event); 5438 } else { 5439 // Cache the drag description when the operation starts, then fill it in 5440 // on subsequent calls as a convenience 5441 if (what == DragEvent.ACTION_DRAG_STARTED) { 5442 mCurrentDragView = null; // Start the current-recipient tracking 5443 mDragDescription = event.mClipDescription; 5444 } else { 5445 event.mClipDescription = mDragDescription; 5446 } 5447 5448 // For events with a [screen] location, translate into window coordinates 5449 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5450 mDragPoint.set(event.mX, event.mY); 5451 if (mTranslator != null) { 5452 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5453 } 5454 5455 if (mCurScrollY != 0) { 5456 mDragPoint.offset(0, mCurScrollY); 5457 } 5458 5459 event.mX = mDragPoint.x; 5460 event.mY = mDragPoint.y; 5461 } 5462 5463 // Remember who the current drag target is pre-dispatch 5464 final View prevDragView = mCurrentDragView; 5465 5466 // Now dispatch the drag/drop event 5467 boolean result = mView.dispatchDragEvent(event); 5468 5469 // If we changed apparent drag target, tell the OS about it 5470 if (prevDragView != mCurrentDragView) { 5471 try { 5472 if (prevDragView != null) { 5473 mWindowSession.dragRecipientExited(mWindow); 5474 } 5475 if (mCurrentDragView != null) { 5476 mWindowSession.dragRecipientEntered(mWindow); 5477 } 5478 } catch (RemoteException e) { 5479 Slog.e(mTag, "Unable to note drag target change"); 5480 } 5481 } 5482 5483 // Report the drop result when we're done 5484 if (what == DragEvent.ACTION_DROP) { 5485 mDragDescription = null; 5486 try { 5487 Log.i(mTag, "Reporting drop result: " + result); 5488 mWindowSession.reportDropResult(mWindow, result); 5489 } catch (RemoteException e) { 5490 Log.e(mTag, "Unable to report drop result"); 5491 } 5492 } 5493 5494 // When the drag operation ends, reset drag-related state 5495 if (what == DragEvent.ACTION_DRAG_ENDED) { 5496 setLocalDragState(null); 5497 mAttachInfo.mDragToken = null; 5498 if (mAttachInfo.mDragSurface != null) { 5499 mAttachInfo.mDragSurface.release(); 5500 mAttachInfo.mDragSurface = null; 5501 } 5502 } 5503 } 5504 } 5505 event.recycle(); 5506 } 5507 5508 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5509 if (mSeq != args.seq) { 5510 // The sequence has changed, so we need to update our value and make 5511 // sure to do a traversal afterward so the window manager is given our 5512 // most recent data. 5513 mSeq = args.seq; 5514 mAttachInfo.mForceReportNewAttributes = true; 5515 scheduleTraversals(); 5516 } 5517 if (mView == null) return; 5518 if (args.localChanges != 0) { 5519 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5520 } 5521 5522 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5523 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5524 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5525 mView.dispatchSystemUiVisibilityChanged(visibility); 5526 } 5527 } 5528 5529 public void handleDispatchWindowShown() { 5530 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5531 } 5532 5533 public void handleRequestKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 5534 Bundle data = new Bundle(); 5535 ArrayList<KeyboardShortcutGroup> list = new ArrayList<>(); 5536 if (mView != null) { 5537 mView.requestKeyboardShortcuts(list, deviceId); 5538 } 5539 data.putParcelableArrayList(WindowManager.PARCEL_KEY_SHORTCUTS_ARRAY, list); 5540 try { 5541 receiver.send(0, data); 5542 } catch (RemoteException e) { 5543 } 5544 } 5545 5546 public void getLastTouchPoint(Point outLocation) { 5547 outLocation.x = (int) mLastTouchPoint.x; 5548 outLocation.y = (int) mLastTouchPoint.y; 5549 } 5550 5551 public int getLastTouchSource() { 5552 return mLastTouchSource; 5553 } 5554 5555 public void setDragFocus(View newDragTarget) { 5556 if (mCurrentDragView != newDragTarget) { 5557 mCurrentDragView = newDragTarget; 5558 } 5559 } 5560 5561 private AudioManager getAudioManager() { 5562 if (mView == null) { 5563 throw new IllegalStateException("getAudioManager called when there is no mView"); 5564 } 5565 if (mAudioManager == null) { 5566 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5567 } 5568 return mAudioManager; 5569 } 5570 5571 public AccessibilityInteractionController getAccessibilityInteractionController() { 5572 if (mView == null) { 5573 throw new IllegalStateException("getAccessibilityInteractionController" 5574 + " called when there is no mView"); 5575 } 5576 if (mAccessibilityInteractionController == null) { 5577 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5578 } 5579 return mAccessibilityInteractionController; 5580 } 5581 5582 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5583 boolean insetsPending) throws RemoteException { 5584 5585 float appScale = mAttachInfo.mApplicationScale; 5586 boolean restore = false; 5587 if (params != null && mTranslator != null) { 5588 restore = true; 5589 params.backup(); 5590 mTranslator.translateWindowLayout(params); 5591 } 5592 if (params != null) { 5593 if (DBG) Log.d(mTag, "WindowLayout in layoutWindow:" + params); 5594 } 5595 mPendingConfiguration.seq = 0; 5596 //Log.d(mTag, ">>>>>> CALLING relayout"); 5597 if (params != null && mOrigWindowType != params.type) { 5598 // For compatibility with old apps, don't crash here. 5599 if (mTargetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5600 Slog.w(mTag, "Window type can not be changed after " 5601 + "the window is added; ignoring change of " + mView); 5602 params.type = mOrigWindowType; 5603 } 5604 } 5605 int relayoutResult = mWindowSession.relayout( 5606 mWindow, mSeq, params, 5607 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5608 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5609 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5610 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5611 mPendingStableInsets, mPendingOutsets, mPendingBackDropFrame, mPendingConfiguration, 5612 mSurface); 5613 5614 mPendingAlwaysConsumeNavBar = 5615 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_CONSUME_ALWAYS_NAV_BAR) != 0; 5616 5617 //Log.d(mTag, "<<<<<< BACK FROM relayout"); 5618 if (restore) { 5619 params.restore(); 5620 } 5621 5622 if (mTranslator != null) { 5623 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5624 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5625 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5626 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5627 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5628 } 5629 return relayoutResult; 5630 } 5631 5632 /** 5633 * {@inheritDoc} 5634 */ 5635 @Override 5636 public void playSoundEffect(int effectId) { 5637 checkThread(); 5638 5639 try { 5640 final AudioManager audioManager = getAudioManager(); 5641 5642 switch (effectId) { 5643 case SoundEffectConstants.CLICK: 5644 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5645 return; 5646 case SoundEffectConstants.NAVIGATION_DOWN: 5647 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5648 return; 5649 case SoundEffectConstants.NAVIGATION_LEFT: 5650 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5651 return; 5652 case SoundEffectConstants.NAVIGATION_RIGHT: 5653 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5654 return; 5655 case SoundEffectConstants.NAVIGATION_UP: 5656 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5657 return; 5658 default: 5659 throw new IllegalArgumentException("unknown effect id " + effectId + 5660 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5661 } 5662 } catch (IllegalStateException e) { 5663 // Exception thrown by getAudioManager() when mView is null 5664 Log.e(mTag, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5665 e.printStackTrace(); 5666 } 5667 } 5668 5669 /** 5670 * {@inheritDoc} 5671 */ 5672 @Override 5673 public boolean performHapticFeedback(int effectId, boolean always) { 5674 try { 5675 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5676 } catch (RemoteException e) { 5677 return false; 5678 } 5679 } 5680 5681 /** 5682 * {@inheritDoc} 5683 */ 5684 @Override 5685 public View focusSearch(View focused, int direction) { 5686 checkThread(); 5687 if (!(mView instanceof ViewGroup)) { 5688 return null; 5689 } 5690 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5691 } 5692 5693 public void debug() { 5694 mView.debug(); 5695 } 5696 5697 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5698 String innerPrefix = prefix + " "; 5699 writer.print(prefix); writer.println("ViewRoot:"); 5700 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5701 writer.print(" mRemoved="); writer.println(mRemoved); 5702 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5703 writer.println(mConsumeBatchedInputScheduled); 5704 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5705 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5706 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5707 writer.println(mPendingInputEventCount); 5708 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5709 writer.println(mProcessInputEventsScheduled); 5710 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5711 writer.print(mTraversalScheduled); 5712 writer.print(innerPrefix); writer.print("mIsAmbientMode="); 5713 writer.print(mIsAmbientMode); 5714 if (mTraversalScheduled) { 5715 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5716 } else { 5717 writer.println(); 5718 } 5719 mFirstInputStage.dump(innerPrefix, writer); 5720 5721 mChoreographer.dump(prefix, writer); 5722 5723 writer.print(prefix); writer.println("View Hierarchy:"); 5724 dumpViewHierarchy(innerPrefix, writer, mView); 5725 } 5726 5727 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5728 writer.print(prefix); 5729 if (view == null) { 5730 writer.println("null"); 5731 return; 5732 } 5733 writer.println(view.toString()); 5734 if (!(view instanceof ViewGroup)) { 5735 return; 5736 } 5737 ViewGroup grp = (ViewGroup)view; 5738 final int N = grp.getChildCount(); 5739 if (N <= 0) { 5740 return; 5741 } 5742 prefix = prefix + " "; 5743 for (int i=0; i<N; i++) { 5744 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5745 } 5746 } 5747 5748 public void dumpGfxInfo(int[] info) { 5749 info[0] = info[1] = 0; 5750 if (mView != null) { 5751 getGfxInfo(mView, info); 5752 } 5753 } 5754 5755 private static void getGfxInfo(View view, int[] info) { 5756 RenderNode renderNode = view.mRenderNode; 5757 info[0]++; 5758 if (renderNode != null) { 5759 info[1] += renderNode.getDebugSize(); 5760 } 5761 5762 if (view instanceof ViewGroup) { 5763 ViewGroup group = (ViewGroup) view; 5764 5765 int count = group.getChildCount(); 5766 for (int i = 0; i < count; i++) { 5767 getGfxInfo(group.getChildAt(i), info); 5768 } 5769 } 5770 } 5771 5772 /** 5773 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5774 * @return True, request has been queued. False, request has been completed. 5775 */ 5776 boolean die(boolean immediate) { 5777 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5778 // done by dispatchDetachedFromWindow will cause havoc on return. 5779 if (immediate && !mIsInTraversal) { 5780 doDie(); 5781 return false; 5782 } 5783 5784 if (!mIsDrawing) { 5785 destroyHardwareRenderer(); 5786 } else { 5787 Log.e(mTag, "Attempting to destroy the window while drawing!\n" + 5788 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5789 } 5790 mHandler.sendEmptyMessage(MSG_DIE); 5791 return true; 5792 } 5793 5794 void doDie() { 5795 checkThread(); 5796 if (LOCAL_LOGV) Log.v(mTag, "DIE in " + this + " of " + mSurface); 5797 synchronized (this) { 5798 if (mRemoved) { 5799 return; 5800 } 5801 mRemoved = true; 5802 if (mAdded) { 5803 dispatchDetachedFromWindow(); 5804 } 5805 5806 if (mAdded && !mFirst) { 5807 destroyHardwareRenderer(); 5808 5809 if (mView != null) { 5810 int viewVisibility = mView.getVisibility(); 5811 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5812 if (mWindowAttributesChanged || viewVisibilityChanged) { 5813 // If layout params have been changed, first give them 5814 // to the window manager to make sure it has the correct 5815 // animation info. 5816 try { 5817 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5818 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5819 mWindowSession.finishDrawing(mWindow); 5820 } 5821 } catch (RemoteException e) { 5822 } 5823 } 5824 5825 mSurface.release(); 5826 } 5827 } 5828 5829 mAdded = false; 5830 } 5831 WindowManagerGlobal.getInstance().doRemoveView(this); 5832 } 5833 5834 public void requestUpdateConfiguration(Configuration config) { 5835 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5836 mHandler.sendMessage(msg); 5837 } 5838 5839 public void loadSystemProperties() { 5840 mHandler.post(new Runnable() { 5841 @Override 5842 public void run() { 5843 // Profiling 5844 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5845 profileRendering(mAttachInfo.mHasWindowFocus); 5846 5847 // Hardware rendering 5848 if (mAttachInfo.mHardwareRenderer != null) { 5849 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5850 invalidate(); 5851 } 5852 } 5853 5854 // Layout debugging 5855 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5856 if (layout != mAttachInfo.mDebugLayout) { 5857 mAttachInfo.mDebugLayout = layout; 5858 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5859 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5860 } 5861 } 5862 } 5863 }); 5864 } 5865 5866 private void destroyHardwareRenderer() { 5867 ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5868 5869 if (hardwareRenderer != null) { 5870 if (mView != null) { 5871 hardwareRenderer.destroyHardwareResources(mView); 5872 } 5873 hardwareRenderer.destroy(); 5874 hardwareRenderer.setRequested(false); 5875 5876 mAttachInfo.mHardwareRenderer = null; 5877 mAttachInfo.mHardwareAccelerated = false; 5878 } 5879 } 5880 5881 public void dispatchFinishInputConnection(InputConnection connection) { 5882 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5883 mHandler.sendMessage(msg); 5884 } 5885 5886 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5887 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 5888 Configuration newConfig, Rect backDropFrame, boolean forceLayout, 5889 boolean alwaysConsumeNavBar) { 5890 if (DEBUG_LAYOUT) Log.v(mTag, "Resizing " + this + ": frame=" + frame.toShortString() 5891 + " contentInsets=" + contentInsets.toShortString() 5892 + " visibleInsets=" + visibleInsets.toShortString() 5893 + " reportDraw=" + reportDraw 5894 + " backDropFrame=" + backDropFrame); 5895 5896 // Tell all listeners that we are resizing the window so that the chrome can get 5897 // updated as fast as possible on a separate thread, 5898 if (mDragResizing) { 5899 boolean fullscreen = frame.equals(backDropFrame); 5900 synchronized (mWindowCallbacks) { 5901 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 5902 mWindowCallbacks.get(i).onWindowSizeIsChanging(backDropFrame, fullscreen, 5903 visibleInsets, stableInsets); 5904 } 5905 } 5906 } 5907 5908 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5909 if (mTranslator != null) { 5910 mTranslator.translateRectInScreenToAppWindow(frame); 5911 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5912 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5913 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5914 } 5915 SomeArgs args = SomeArgs.obtain(); 5916 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5917 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5918 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5919 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5920 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5921 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5922 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5923 args.arg7 = sameProcessCall ? new Rect(outsets) : outsets; 5924 args.arg8 = sameProcessCall ? new Rect(backDropFrame) : backDropFrame; 5925 args.argi1 = forceLayout ? 1 : 0; 5926 args.argi2 = alwaysConsumeNavBar ? 1 : 0; 5927 msg.obj = args; 5928 mHandler.sendMessage(msg); 5929 } 5930 5931 public void dispatchMoved(int newX, int newY) { 5932 if (DEBUG_LAYOUT) Log.v(mTag, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5933 if (mTranslator != null) { 5934 PointF point = new PointF(newX, newY); 5935 mTranslator.translatePointInScreenToAppWindow(point); 5936 newX = (int) (point.x + 0.5); 5937 newY = (int) (point.y + 0.5); 5938 } 5939 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5940 mHandler.sendMessage(msg); 5941 } 5942 5943 /** 5944 * Represents a pending input event that is waiting in a queue. 5945 * 5946 * Input events are processed in serial order by the timestamp specified by 5947 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5948 * one input event to the application at a time and waits for the application 5949 * to finish handling it before delivering the next one. 5950 * 5951 * However, because the application or IME can synthesize and inject multiple 5952 * key events at a time without going through the input dispatcher, we end up 5953 * needing a queue on the application's side. 5954 */ 5955 private static final class QueuedInputEvent { 5956 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5957 public static final int FLAG_DEFERRED = 1 << 1; 5958 public static final int FLAG_FINISHED = 1 << 2; 5959 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5960 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5961 public static final int FLAG_UNHANDLED = 1 << 5; 5962 5963 public QueuedInputEvent mNext; 5964 5965 public InputEvent mEvent; 5966 public InputEventReceiver mReceiver; 5967 public int mFlags; 5968 5969 public boolean shouldSkipIme() { 5970 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5971 return true; 5972 } 5973 return mEvent instanceof MotionEvent 5974 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5975 } 5976 5977 public boolean shouldSendToSynthesizer() { 5978 if ((mFlags & FLAG_UNHANDLED) != 0) { 5979 return true; 5980 } 5981 5982 return false; 5983 } 5984 5985 @Override 5986 public String toString() { 5987 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5988 boolean hasPrevious = false; 5989 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5990 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5991 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5992 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5993 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5994 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5995 if (!hasPrevious) { 5996 sb.append("0"); 5997 } 5998 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5999 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 6000 sb.append(", mEvent=" + mEvent + "}"); 6001 return sb.toString(); 6002 } 6003 6004 private boolean flagToString(String name, int flag, 6005 boolean hasPrevious, StringBuilder sb) { 6006 if ((mFlags & flag) != 0) { 6007 if (hasPrevious) { 6008 sb.append("|"); 6009 } 6010 sb.append(name); 6011 return true; 6012 } 6013 return hasPrevious; 6014 } 6015 } 6016 6017 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 6018 InputEventReceiver receiver, int flags) { 6019 QueuedInputEvent q = mQueuedInputEventPool; 6020 if (q != null) { 6021 mQueuedInputEventPoolSize -= 1; 6022 mQueuedInputEventPool = q.mNext; 6023 q.mNext = null; 6024 } else { 6025 q = new QueuedInputEvent(); 6026 } 6027 6028 q.mEvent = event; 6029 q.mReceiver = receiver; 6030 q.mFlags = flags; 6031 return q; 6032 } 6033 6034 private void recycleQueuedInputEvent(QueuedInputEvent q) { 6035 q.mEvent = null; 6036 q.mReceiver = null; 6037 6038 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 6039 mQueuedInputEventPoolSize += 1; 6040 q.mNext = mQueuedInputEventPool; 6041 mQueuedInputEventPool = q; 6042 } 6043 } 6044 6045 void enqueueInputEvent(InputEvent event) { 6046 enqueueInputEvent(event, null, 0, false); 6047 } 6048 6049 void enqueueInputEvent(InputEvent event, 6050 InputEventReceiver receiver, int flags, boolean processImmediately) { 6051 adjustInputEventForCompatibility(event); 6052 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 6053 6054 // Always enqueue the input event in order, regardless of its time stamp. 6055 // We do this because the application or the IME may inject key events 6056 // in response to touch events and we want to ensure that the injected keys 6057 // are processed in the order they were received and we cannot trust that 6058 // the time stamp of injected events are monotonic. 6059 QueuedInputEvent last = mPendingInputEventTail; 6060 if (last == null) { 6061 mPendingInputEventHead = q; 6062 mPendingInputEventTail = q; 6063 } else { 6064 last.mNext = q; 6065 mPendingInputEventTail = q; 6066 } 6067 mPendingInputEventCount += 1; 6068 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6069 mPendingInputEventCount); 6070 6071 if (processImmediately) { 6072 doProcessInputEvents(); 6073 } else { 6074 scheduleProcessInputEvents(); 6075 } 6076 } 6077 6078 private void scheduleProcessInputEvents() { 6079 if (!mProcessInputEventsScheduled) { 6080 mProcessInputEventsScheduled = true; 6081 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 6082 msg.setAsynchronous(true); 6083 mHandler.sendMessage(msg); 6084 } 6085 } 6086 6087 void doProcessInputEvents() { 6088 // Deliver all pending input events in the queue. 6089 while (mPendingInputEventHead != null) { 6090 QueuedInputEvent q = mPendingInputEventHead; 6091 mPendingInputEventHead = q.mNext; 6092 if (mPendingInputEventHead == null) { 6093 mPendingInputEventTail = null; 6094 } 6095 q.mNext = null; 6096 6097 mPendingInputEventCount -= 1; 6098 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6099 mPendingInputEventCount); 6100 6101 long eventTime = q.mEvent.getEventTimeNano(); 6102 long oldestEventTime = eventTime; 6103 if (q.mEvent instanceof MotionEvent) { 6104 MotionEvent me = (MotionEvent)q.mEvent; 6105 if (me.getHistorySize() > 0) { 6106 oldestEventTime = me.getHistoricalEventTimeNano(0); 6107 } 6108 } 6109 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 6110 6111 deliverInputEvent(q); 6112 } 6113 6114 // We are done processing all input events that we can process right now 6115 // so we can clear the pending flag immediately. 6116 if (mProcessInputEventsScheduled) { 6117 mProcessInputEventsScheduled = false; 6118 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 6119 } 6120 } 6121 6122 private void deliverInputEvent(QueuedInputEvent q) { 6123 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6124 q.mEvent.getSequenceNumber()); 6125 if (mInputEventConsistencyVerifier != null) { 6126 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 6127 } 6128 6129 InputStage stage; 6130 if (q.shouldSendToSynthesizer()) { 6131 stage = mSyntheticInputStage; 6132 } else { 6133 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 6134 } 6135 6136 if (stage != null) { 6137 stage.deliver(q); 6138 } else { 6139 finishInputEvent(q); 6140 } 6141 } 6142 6143 private void finishInputEvent(QueuedInputEvent q) { 6144 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6145 q.mEvent.getSequenceNumber()); 6146 6147 if (q.mReceiver != null) { 6148 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 6149 q.mReceiver.finishInputEvent(q.mEvent, handled); 6150 } else { 6151 q.mEvent.recycleIfNeededAfterDispatch(); 6152 } 6153 6154 recycleQueuedInputEvent(q); 6155 } 6156 6157 private void adjustInputEventForCompatibility(InputEvent e) { 6158 if (mTargetSdkVersion < Build.VERSION_CODES.M && e instanceof MotionEvent) { 6159 MotionEvent motion = (MotionEvent) e; 6160 final int mask = 6161 MotionEvent.BUTTON_STYLUS_PRIMARY | MotionEvent.BUTTON_STYLUS_SECONDARY; 6162 final int buttonState = motion.getButtonState(); 6163 final int compatButtonState = (buttonState & mask) >> 4; 6164 if (compatButtonState != 0) { 6165 motion.setButtonState(buttonState | compatButtonState); 6166 } 6167 } 6168 } 6169 6170 static boolean isTerminalInputEvent(InputEvent event) { 6171 if (event instanceof KeyEvent) { 6172 final KeyEvent keyEvent = (KeyEvent)event; 6173 return keyEvent.getAction() == KeyEvent.ACTION_UP; 6174 } else { 6175 final MotionEvent motionEvent = (MotionEvent)event; 6176 final int action = motionEvent.getAction(); 6177 return action == MotionEvent.ACTION_UP 6178 || action == MotionEvent.ACTION_CANCEL 6179 || action == MotionEvent.ACTION_HOVER_EXIT; 6180 } 6181 } 6182 6183 void scheduleConsumeBatchedInput() { 6184 if (!mConsumeBatchedInputScheduled) { 6185 mConsumeBatchedInputScheduled = true; 6186 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 6187 mConsumedBatchedInputRunnable, null); 6188 } 6189 } 6190 6191 void unscheduleConsumeBatchedInput() { 6192 if (mConsumeBatchedInputScheduled) { 6193 mConsumeBatchedInputScheduled = false; 6194 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 6195 mConsumedBatchedInputRunnable, null); 6196 } 6197 } 6198 6199 void scheduleConsumeBatchedInputImmediately() { 6200 if (!mConsumeBatchedInputImmediatelyScheduled) { 6201 unscheduleConsumeBatchedInput(); 6202 mConsumeBatchedInputImmediatelyScheduled = true; 6203 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 6204 } 6205 } 6206 6207 void doConsumeBatchedInput(long frameTimeNanos) { 6208 if (mConsumeBatchedInputScheduled) { 6209 mConsumeBatchedInputScheduled = false; 6210 if (mInputEventReceiver != null) { 6211 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 6212 && frameTimeNanos != -1) { 6213 // If we consumed a batch here, we want to go ahead and schedule the 6214 // consumption of batched input events on the next frame. Otherwise, we would 6215 // wait until we have more input events pending and might get starved by other 6216 // things occurring in the process. If the frame time is -1, however, then 6217 // we're in a non-batching mode, so there's no need to schedule this. 6218 scheduleConsumeBatchedInput(); 6219 } 6220 } 6221 doProcessInputEvents(); 6222 } 6223 } 6224 6225 final class TraversalRunnable implements Runnable { 6226 @Override 6227 public void run() { 6228 doTraversal(); 6229 } 6230 } 6231 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 6232 6233 final class WindowInputEventReceiver extends InputEventReceiver { 6234 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 6235 super(inputChannel, looper); 6236 } 6237 6238 @Override 6239 public void onInputEvent(InputEvent event) { 6240 enqueueInputEvent(event, this, 0, true); 6241 } 6242 6243 @Override 6244 public void onBatchedInputEventPending() { 6245 if (mUnbufferedInputDispatch) { 6246 super.onBatchedInputEventPending(); 6247 } else { 6248 scheduleConsumeBatchedInput(); 6249 } 6250 } 6251 6252 @Override 6253 public void dispose() { 6254 unscheduleConsumeBatchedInput(); 6255 super.dispose(); 6256 } 6257 } 6258 WindowInputEventReceiver mInputEventReceiver; 6259 6260 final class ConsumeBatchedInputRunnable implements Runnable { 6261 @Override 6262 public void run() { 6263 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 6264 } 6265 } 6266 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 6267 new ConsumeBatchedInputRunnable(); 6268 boolean mConsumeBatchedInputScheduled; 6269 6270 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 6271 @Override 6272 public void run() { 6273 doConsumeBatchedInput(-1); 6274 } 6275 } 6276 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 6277 new ConsumeBatchedInputImmediatelyRunnable(); 6278 boolean mConsumeBatchedInputImmediatelyScheduled; 6279 6280 final class InvalidateOnAnimationRunnable implements Runnable { 6281 private boolean mPosted; 6282 private final ArrayList<View> mViews = new ArrayList<View>(); 6283 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 6284 new ArrayList<AttachInfo.InvalidateInfo>(); 6285 private View[] mTempViews; 6286 private AttachInfo.InvalidateInfo[] mTempViewRects; 6287 6288 public void addView(View view) { 6289 synchronized (this) { 6290 mViews.add(view); 6291 postIfNeededLocked(); 6292 } 6293 } 6294 6295 public void addViewRect(AttachInfo.InvalidateInfo info) { 6296 synchronized (this) { 6297 mViewRects.add(info); 6298 postIfNeededLocked(); 6299 } 6300 } 6301 6302 public void removeView(View view) { 6303 synchronized (this) { 6304 mViews.remove(view); 6305 6306 for (int i = mViewRects.size(); i-- > 0; ) { 6307 AttachInfo.InvalidateInfo info = mViewRects.get(i); 6308 if (info.target == view) { 6309 mViewRects.remove(i); 6310 info.recycle(); 6311 } 6312 } 6313 6314 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 6315 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 6316 mPosted = false; 6317 } 6318 } 6319 } 6320 6321 @Override 6322 public void run() { 6323 final int viewCount; 6324 final int viewRectCount; 6325 synchronized (this) { 6326 mPosted = false; 6327 6328 viewCount = mViews.size(); 6329 if (viewCount != 0) { 6330 mTempViews = mViews.toArray(mTempViews != null 6331 ? mTempViews : new View[viewCount]); 6332 mViews.clear(); 6333 } 6334 6335 viewRectCount = mViewRects.size(); 6336 if (viewRectCount != 0) { 6337 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6338 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6339 mViewRects.clear(); 6340 } 6341 } 6342 6343 for (int i = 0; i < viewCount; i++) { 6344 mTempViews[i].invalidate(); 6345 mTempViews[i] = null; 6346 } 6347 6348 for (int i = 0; i < viewRectCount; i++) { 6349 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6350 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6351 info.recycle(); 6352 } 6353 } 6354 6355 private void postIfNeededLocked() { 6356 if (!mPosted) { 6357 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6358 mPosted = true; 6359 } 6360 } 6361 } 6362 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6363 new InvalidateOnAnimationRunnable(); 6364 6365 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6366 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6367 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6368 } 6369 6370 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6371 long delayMilliseconds) { 6372 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6373 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6374 } 6375 6376 public void dispatchInvalidateOnAnimation(View view) { 6377 mInvalidateOnAnimationRunnable.addView(view); 6378 } 6379 6380 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6381 mInvalidateOnAnimationRunnable.addViewRect(info); 6382 } 6383 6384 public void cancelInvalidate(View view) { 6385 mHandler.removeMessages(MSG_INVALIDATE, view); 6386 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6387 // them to the pool 6388 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6389 mInvalidateOnAnimationRunnable.removeView(view); 6390 } 6391 6392 public void dispatchInputEvent(InputEvent event) { 6393 dispatchInputEvent(event, null); 6394 } 6395 6396 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6397 SomeArgs args = SomeArgs.obtain(); 6398 args.arg1 = event; 6399 args.arg2 = receiver; 6400 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6401 msg.setAsynchronous(true); 6402 mHandler.sendMessage(msg); 6403 } 6404 6405 public void synthesizeInputEvent(InputEvent event) { 6406 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6407 msg.setAsynchronous(true); 6408 mHandler.sendMessage(msg); 6409 } 6410 6411 public void dispatchKeyFromIme(KeyEvent event) { 6412 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6413 msg.setAsynchronous(true); 6414 mHandler.sendMessage(msg); 6415 } 6416 6417 /** 6418 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6419 * 6420 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6421 * passes in. 6422 */ 6423 public void dispatchUnhandledInputEvent(InputEvent event) { 6424 if (event instanceof MotionEvent) { 6425 event = MotionEvent.obtain((MotionEvent) event); 6426 } 6427 synthesizeInputEvent(event); 6428 } 6429 6430 public void dispatchAppVisibility(boolean visible) { 6431 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6432 msg.arg1 = visible ? 1 : 0; 6433 mHandler.sendMessage(msg); 6434 } 6435 6436 public void dispatchGetNewSurface() { 6437 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6438 mHandler.sendMessage(msg); 6439 } 6440 6441 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6442 Message msg = Message.obtain(); 6443 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6444 msg.arg1 = hasFocus ? 1 : 0; 6445 msg.arg2 = inTouchMode ? 1 : 0; 6446 mHandler.sendMessage(msg); 6447 } 6448 6449 public void dispatchWindowShown() { 6450 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6451 } 6452 6453 public void dispatchCloseSystemDialogs(String reason) { 6454 Message msg = Message.obtain(); 6455 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6456 msg.obj = reason; 6457 mHandler.sendMessage(msg); 6458 } 6459 6460 public void dispatchDragEvent(DragEvent event) { 6461 final int what; 6462 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6463 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6464 mHandler.removeMessages(what); 6465 } else { 6466 what = MSG_DISPATCH_DRAG_EVENT; 6467 } 6468 Message msg = mHandler.obtainMessage(what, event); 6469 mHandler.sendMessage(msg); 6470 } 6471 6472 public void updatePointerIcon(float x, float y) { 6473 final int what = MSG_UPDATE_POINTER_ICON; 6474 mHandler.removeMessages(what); 6475 final long now = SystemClock.uptimeMillis(); 6476 final MotionEvent event = MotionEvent.obtain( 6477 0, now, MotionEvent.ACTION_HOVER_MOVE, x, y, 0); 6478 Message msg = mHandler.obtainMessage(what, event); 6479 mHandler.sendMessage(msg); 6480 } 6481 6482 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6483 int localValue, int localChanges) { 6484 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6485 args.seq = seq; 6486 args.globalVisibility = globalVisibility; 6487 args.localValue = localValue; 6488 args.localChanges = localChanges; 6489 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6490 } 6491 6492 public void dispatchCheckFocus() { 6493 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6494 // This will result in a call to checkFocus() below. 6495 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6496 } 6497 } 6498 6499 public void dispatchRequestKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 6500 mHandler.obtainMessage( 6501 MSG_REQUEST_KEYBOARD_SHORTCUTS, deviceId, 0, receiver).sendToTarget(); 6502 } 6503 6504 /** 6505 * Post a callback to send a 6506 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6507 * This event is send at most once every 6508 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6509 */ 6510 private void postSendWindowContentChangedCallback(View source, int changeType) { 6511 if (mSendWindowContentChangedAccessibilityEvent == null) { 6512 mSendWindowContentChangedAccessibilityEvent = 6513 new SendWindowContentChangedAccessibilityEvent(); 6514 } 6515 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6516 } 6517 6518 /** 6519 * Remove a posted callback to send a 6520 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6521 */ 6522 private void removeSendWindowContentChangedCallback() { 6523 if (mSendWindowContentChangedAccessibilityEvent != null) { 6524 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6525 } 6526 } 6527 6528 @Override 6529 public boolean showContextMenuForChild(View originalView) { 6530 return false; 6531 } 6532 6533 @Override 6534 public boolean showContextMenuForChild(View originalView, float x, float y) { 6535 return false; 6536 } 6537 6538 @Override 6539 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6540 return null; 6541 } 6542 6543 @Override 6544 public ActionMode startActionModeForChild( 6545 View originalView, ActionMode.Callback callback, int type) { 6546 return null; 6547 } 6548 6549 @Override 6550 public void createContextMenu(ContextMenu menu) { 6551 } 6552 6553 @Override 6554 public void childDrawableStateChanged(View child) { 6555 } 6556 6557 @Override 6558 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6559 if (mView == null || mStopped || mPausedForTransition) { 6560 return false; 6561 } 6562 // Intercept accessibility focus events fired by virtual nodes to keep 6563 // track of accessibility focus position in such nodes. 6564 final int eventType = event.getEventType(); 6565 switch (eventType) { 6566 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6567 final long sourceNodeId = event.getSourceNodeId(); 6568 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6569 sourceNodeId); 6570 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6571 if (source != null) { 6572 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6573 if (provider != null) { 6574 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6575 sourceNodeId); 6576 final AccessibilityNodeInfo node; 6577 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6578 node = provider.createAccessibilityNodeInfo( 6579 AccessibilityNodeProvider.HOST_VIEW_ID); 6580 } else { 6581 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6582 } 6583 setAccessibilityFocus(source, node); 6584 } 6585 } 6586 } break; 6587 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6588 final long sourceNodeId = event.getSourceNodeId(); 6589 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6590 sourceNodeId); 6591 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6592 if (source != null) { 6593 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6594 if (provider != null) { 6595 setAccessibilityFocus(null, null); 6596 } 6597 } 6598 } break; 6599 6600 6601 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6602 handleWindowContentChangedEvent(event); 6603 } break; 6604 } 6605 mAccessibilityManager.sendAccessibilityEvent(event); 6606 return true; 6607 } 6608 6609 /** 6610 * Updates the focused virtual view, when necessary, in response to a 6611 * content changed event. 6612 * <p> 6613 * This is necessary to get updated bounds after a position change. 6614 * 6615 * @param event an accessibility event of type 6616 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} 6617 */ 6618 private void handleWindowContentChangedEvent(AccessibilityEvent event) { 6619 final View focusedHost = mAccessibilityFocusedHost; 6620 if (focusedHost == null || mAccessibilityFocusedVirtualView == null) { 6621 // No virtual view focused, nothing to do here. 6622 return; 6623 } 6624 6625 final AccessibilityNodeProvider provider = focusedHost.getAccessibilityNodeProvider(); 6626 if (provider == null) { 6627 // Error state: virtual view with no provider. Clear focus. 6628 mAccessibilityFocusedHost = null; 6629 mAccessibilityFocusedVirtualView = null; 6630 focusedHost.clearAccessibilityFocusNoCallbacks(); 6631 return; 6632 } 6633 6634 // We only care about change types that may affect the bounds of the 6635 // focused virtual view. 6636 final int changes = event.getContentChangeTypes(); 6637 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) == 0 6638 && changes != AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6639 return; 6640 } 6641 6642 final long eventSourceNodeId = event.getSourceNodeId(); 6643 final int changedViewId = AccessibilityNodeInfo.getAccessibilityViewId(eventSourceNodeId); 6644 6645 // Search up the tree for subtree containment. 6646 boolean hostInSubtree = false; 6647 View root = mAccessibilityFocusedHost; 6648 while (root != null && !hostInSubtree) { 6649 if (changedViewId == root.getAccessibilityViewId()) { 6650 hostInSubtree = true; 6651 } else { 6652 final ViewParent parent = root.getParent(); 6653 if (parent instanceof View) { 6654 root = (View) parent; 6655 } else { 6656 root = null; 6657 } 6658 } 6659 } 6660 6661 // We care only about changes in subtrees containing the host view. 6662 if (!hostInSubtree) { 6663 return; 6664 } 6665 6666 final long focusedSourceNodeId = mAccessibilityFocusedVirtualView.getSourceNodeId(); 6667 int focusedChildId = AccessibilityNodeInfo.getVirtualDescendantId(focusedSourceNodeId); 6668 if (focusedChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6669 // TODO: Should we clear the focused virtual view? 6670 focusedChildId = AccessibilityNodeProvider.HOST_VIEW_ID; 6671 } 6672 6673 // Refresh the node for the focused virtual view. 6674 final Rect oldBounds = mTempRect; 6675 mAccessibilityFocusedVirtualView.getBoundsInScreen(oldBounds); 6676 mAccessibilityFocusedVirtualView = provider.createAccessibilityNodeInfo(focusedChildId); 6677 if (mAccessibilityFocusedVirtualView == null) { 6678 // Error state: The node no longer exists. Clear focus. 6679 mAccessibilityFocusedHost = null; 6680 focusedHost.clearAccessibilityFocusNoCallbacks(); 6681 6682 // This will probably fail, but try to keep the provider's internal 6683 // state consistent by clearing focus. 6684 provider.performAction(focusedChildId, 6685 AccessibilityAction.ACTION_CLEAR_ACCESSIBILITY_FOCUS.getId(), null); 6686 invalidateRectOnScreen(oldBounds); 6687 } else { 6688 // The node was refreshed, invalidate bounds if necessary. 6689 final Rect newBounds = mAccessibilityFocusedVirtualView.getBoundsInScreen(); 6690 if (!oldBounds.equals(newBounds)) { 6691 oldBounds.union(newBounds); 6692 invalidateRectOnScreen(oldBounds); 6693 } 6694 } 6695 } 6696 6697 @Override 6698 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6699 postSendWindowContentChangedCallback(source, changeType); 6700 } 6701 6702 @Override 6703 public boolean canResolveLayoutDirection() { 6704 return true; 6705 } 6706 6707 @Override 6708 public boolean isLayoutDirectionResolved() { 6709 return true; 6710 } 6711 6712 @Override 6713 public int getLayoutDirection() { 6714 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6715 } 6716 6717 @Override 6718 public boolean canResolveTextDirection() { 6719 return true; 6720 } 6721 6722 @Override 6723 public boolean isTextDirectionResolved() { 6724 return true; 6725 } 6726 6727 @Override 6728 public int getTextDirection() { 6729 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6730 } 6731 6732 @Override 6733 public boolean canResolveTextAlignment() { 6734 return true; 6735 } 6736 6737 @Override 6738 public boolean isTextAlignmentResolved() { 6739 return true; 6740 } 6741 6742 @Override 6743 public int getTextAlignment() { 6744 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6745 } 6746 6747 private View getCommonPredecessor(View first, View second) { 6748 if (mTempHashSet == null) { 6749 mTempHashSet = new HashSet<View>(); 6750 } 6751 HashSet<View> seen = mTempHashSet; 6752 seen.clear(); 6753 View firstCurrent = first; 6754 while (firstCurrent != null) { 6755 seen.add(firstCurrent); 6756 ViewParent firstCurrentParent = firstCurrent.mParent; 6757 if (firstCurrentParent instanceof View) { 6758 firstCurrent = (View) firstCurrentParent; 6759 } else { 6760 firstCurrent = null; 6761 } 6762 } 6763 View secondCurrent = second; 6764 while (secondCurrent != null) { 6765 if (seen.contains(secondCurrent)) { 6766 seen.clear(); 6767 return secondCurrent; 6768 } 6769 ViewParent secondCurrentParent = secondCurrent.mParent; 6770 if (secondCurrentParent instanceof View) { 6771 secondCurrent = (View) secondCurrentParent; 6772 } else { 6773 secondCurrent = null; 6774 } 6775 } 6776 seen.clear(); 6777 return null; 6778 } 6779 6780 void checkThread() { 6781 if (mThread != Thread.currentThread()) { 6782 throw new CalledFromWrongThreadException( 6783 "Only the original thread that created a view hierarchy can touch its views."); 6784 } 6785 } 6786 6787 @Override 6788 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6789 // ViewAncestor never intercepts touch event, so this can be a no-op 6790 } 6791 6792 @Override 6793 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6794 if (rectangle == null) { 6795 return scrollToRectOrFocus(null, immediate); 6796 } 6797 rectangle.offset(child.getLeft() - child.getScrollX(), 6798 child.getTop() - child.getScrollY()); 6799 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6800 mTempRect.set(rectangle); 6801 mTempRect.offset(0, -mCurScrollY); 6802 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6803 try { 6804 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6805 } catch (RemoteException re) { 6806 /* ignore */ 6807 } 6808 return scrolled; 6809 } 6810 6811 @Override 6812 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6813 // Do nothing. 6814 } 6815 6816 @Override 6817 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6818 return false; 6819 } 6820 6821 @Override 6822 public void onStopNestedScroll(View target) { 6823 } 6824 6825 @Override 6826 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6827 } 6828 6829 @Override 6830 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6831 int dxUnconsumed, int dyUnconsumed) { 6832 } 6833 6834 @Override 6835 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6836 } 6837 6838 @Override 6839 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6840 return false; 6841 } 6842 6843 @Override 6844 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6845 return false; 6846 } 6847 6848 @Override 6849 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6850 return false; 6851 } 6852 6853 /** 6854 * Force the window to report its next draw. 6855 * <p> 6856 * This method is only supposed to be used to speed up the interaction from SystemUI and window 6857 * manager when waiting for the first frame to be drawn when turning on the screen. DO NOT USE 6858 * unless you fully understand this interaction. 6859 * @hide 6860 */ 6861 public void setReportNextDraw() { 6862 mReportNextDraw = true; 6863 invalidate(); 6864 } 6865 6866 void changeCanvasOpacity(boolean opaque) { 6867 Log.d(mTag, "changeCanvasOpacity: opaque=" + opaque); 6868 if (mAttachInfo.mHardwareRenderer != null) { 6869 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6870 } 6871 } 6872 6873 class TakenSurfaceHolder extends BaseSurfaceHolder { 6874 @Override 6875 public boolean onAllowLockCanvas() { 6876 return mDrawingAllowed; 6877 } 6878 6879 @Override 6880 public void onRelayoutContainer() { 6881 // Not currently interesting -- from changing between fixed and layout size. 6882 } 6883 6884 @Override 6885 public void setFormat(int format) { 6886 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6887 } 6888 6889 @Override 6890 public void setType(int type) { 6891 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6892 } 6893 6894 @Override 6895 public void onUpdateSurface() { 6896 // We take care of format and type changes on our own. 6897 throw new IllegalStateException("Shouldn't be here"); 6898 } 6899 6900 @Override 6901 public boolean isCreating() { 6902 return mIsCreating; 6903 } 6904 6905 @Override 6906 public void setFixedSize(int width, int height) { 6907 throw new UnsupportedOperationException( 6908 "Currently only support sizing from layout"); 6909 } 6910 6911 @Override 6912 public void setKeepScreenOn(boolean screenOn) { 6913 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6914 } 6915 } 6916 6917 static class W extends IWindow.Stub { 6918 private final WeakReference<ViewRootImpl> mViewAncestor; 6919 private final IWindowSession mWindowSession; 6920 6921 W(ViewRootImpl viewAncestor) { 6922 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6923 mWindowSession = viewAncestor.mWindowSession; 6924 } 6925 6926 @Override 6927 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6928 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 6929 Configuration newConfig, Rect backDropFrame, boolean forceLayout, 6930 boolean alwaysConsumeNavBar) { 6931 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6932 if (viewAncestor != null) { 6933 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6934 visibleInsets, stableInsets, outsets, reportDraw, newConfig, backDropFrame, 6935 forceLayout, alwaysConsumeNavBar); 6936 } 6937 } 6938 6939 @Override 6940 public void moved(int newX, int newY) { 6941 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6942 if (viewAncestor != null) { 6943 viewAncestor.dispatchMoved(newX, newY); 6944 } 6945 } 6946 6947 @Override 6948 public void dispatchAppVisibility(boolean visible) { 6949 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6950 if (viewAncestor != null) { 6951 viewAncestor.dispatchAppVisibility(visible); 6952 } 6953 } 6954 6955 @Override 6956 public void dispatchGetNewSurface() { 6957 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6958 if (viewAncestor != null) { 6959 viewAncestor.dispatchGetNewSurface(); 6960 } 6961 } 6962 6963 @Override 6964 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6965 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6966 if (viewAncestor != null) { 6967 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6968 } 6969 } 6970 6971 private static int checkCallingPermission(String permission) { 6972 try { 6973 return ActivityManagerNative.getDefault().checkPermission( 6974 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6975 } catch (RemoteException e) { 6976 return PackageManager.PERMISSION_DENIED; 6977 } 6978 } 6979 6980 @Override 6981 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6982 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6983 if (viewAncestor != null) { 6984 final View view = viewAncestor.mView; 6985 if (view != null) { 6986 if (checkCallingPermission(Manifest.permission.DUMP) != 6987 PackageManager.PERMISSION_GRANTED) { 6988 throw new SecurityException("Insufficient permissions to invoke" 6989 + " executeCommand() from pid=" + Binder.getCallingPid() 6990 + ", uid=" + Binder.getCallingUid()); 6991 } 6992 6993 OutputStream clientStream = null; 6994 try { 6995 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6996 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6997 } catch (IOException e) { 6998 e.printStackTrace(); 6999 } finally { 7000 if (clientStream != null) { 7001 try { 7002 clientStream.close(); 7003 } catch (IOException e) { 7004 e.printStackTrace(); 7005 } 7006 } 7007 } 7008 } 7009 } 7010 } 7011 7012 @Override 7013 public void closeSystemDialogs(String reason) { 7014 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7015 if (viewAncestor != null) { 7016 viewAncestor.dispatchCloseSystemDialogs(reason); 7017 } 7018 } 7019 7020 @Override 7021 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 7022 boolean sync) { 7023 if (sync) { 7024 try { 7025 mWindowSession.wallpaperOffsetsComplete(asBinder()); 7026 } catch (RemoteException e) { 7027 } 7028 } 7029 } 7030 7031 @Override 7032 public void dispatchWallpaperCommand(String action, int x, int y, 7033 int z, Bundle extras, boolean sync) { 7034 if (sync) { 7035 try { 7036 mWindowSession.wallpaperCommandComplete(asBinder(), null); 7037 } catch (RemoteException e) { 7038 } 7039 } 7040 } 7041 7042 /* Drag/drop */ 7043 @Override 7044 public void dispatchDragEvent(DragEvent event) { 7045 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7046 if (viewAncestor != null) { 7047 viewAncestor.dispatchDragEvent(event); 7048 } 7049 } 7050 7051 @Override 7052 public void updatePointerIcon(float x, float y) { 7053 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7054 if (viewAncestor != null) { 7055 viewAncestor.updatePointerIcon(x, y); 7056 } 7057 } 7058 7059 @Override 7060 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 7061 int localValue, int localChanges) { 7062 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7063 if (viewAncestor != null) { 7064 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 7065 localValue, localChanges); 7066 } 7067 } 7068 7069 @Override 7070 public void dispatchWindowShown() { 7071 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7072 if (viewAncestor != null) { 7073 viewAncestor.dispatchWindowShown(); 7074 } 7075 } 7076 7077 @Override 7078 public void requestAppKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 7079 ViewRootImpl viewAncestor = mViewAncestor.get(); 7080 if (viewAncestor != null) { 7081 viewAncestor.dispatchRequestKeyboardShortcuts(receiver, deviceId); 7082 } 7083 } 7084 } 7085 7086 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 7087 public CalledFromWrongThreadException(String msg) { 7088 super(msg); 7089 } 7090 } 7091 7092 static HandlerActionQueue getRunQueue() { 7093 HandlerActionQueue rq = sRunQueues.get(); 7094 if (rq != null) { 7095 return rq; 7096 } 7097 rq = new HandlerActionQueue(); 7098 sRunQueues.set(rq); 7099 return rq; 7100 } 7101 7102 /** 7103 * Start a drag resizing which will inform all listeners that a window resize is taking place. 7104 */ 7105 private void startDragResizing(Rect initialBounds, boolean fullscreen, Rect systemInsets, 7106 Rect stableInsets, int resizeMode) { 7107 if (!mDragResizing) { 7108 mDragResizing = true; 7109 synchronized (mWindowCallbacks) { 7110 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7111 mWindowCallbacks.get(i).onWindowDragResizeStart(initialBounds, fullscreen, 7112 systemInsets, stableInsets, resizeMode); 7113 } 7114 } 7115 mFullRedrawNeeded = true; 7116 } 7117 } 7118 7119 /** 7120 * End a drag resize which will inform all listeners that a window resize has ended. 7121 */ 7122 private void endDragResizing() { 7123 if (mDragResizing) { 7124 mDragResizing = false; 7125 synchronized (mWindowCallbacks) { 7126 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7127 mWindowCallbacks.get(i).onWindowDragResizeEnd(); 7128 } 7129 } 7130 mFullRedrawNeeded = true; 7131 } 7132 } 7133 7134 private boolean updateContentDrawBounds() { 7135 boolean updated = false; 7136 synchronized (mWindowCallbacks) { 7137 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7138 updated |= mWindowCallbacks.get(i).onContentDrawn( 7139 mWindowAttributes.surfaceInsets.left, 7140 mWindowAttributes.surfaceInsets.top, 7141 mWidth, mHeight); 7142 } 7143 } 7144 return updated | (mDragResizing && mReportNextDraw); 7145 } 7146 7147 private void requestDrawWindow() { 7148 if (mReportNextDraw) { 7149 mWindowDrawCountDown = new CountDownLatch(mWindowCallbacks.size()); 7150 } 7151 synchronized (mWindowCallbacks) { 7152 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7153 mWindowCallbacks.get(i).onRequestDraw(mReportNextDraw); 7154 } 7155 } 7156 } 7157 7158 /** 7159 * Tells this instance that its corresponding activity has just relaunched. In this case, we 7160 * need to force a relayout of the window to make sure we get the correct bounds from window 7161 * manager. 7162 */ 7163 public void reportActivityRelaunched() { 7164 mActivityRelaunched = true; 7165 } 7166 7167 /** 7168 * Class for managing the accessibility interaction connection 7169 * based on the global accessibility state. 7170 */ 7171 final class AccessibilityInteractionConnectionManager 7172 implements AccessibilityStateChangeListener { 7173 @Override 7174 public void onAccessibilityStateChanged(boolean enabled) { 7175 if (enabled) { 7176 ensureConnection(); 7177 if (mAttachInfo.mHasWindowFocus) { 7178 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 7179 View focusedView = mView.findFocus(); 7180 if (focusedView != null && focusedView != mView) { 7181 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 7182 } 7183 } 7184 } else { 7185 ensureNoConnection(); 7186 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 7187 } 7188 } 7189 7190 public void ensureConnection() { 7191 final boolean registered = 7192 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7193 if (!registered) { 7194 mAttachInfo.mAccessibilityWindowId = 7195 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 7196 new AccessibilityInteractionConnection(ViewRootImpl.this)); 7197 } 7198 } 7199 7200 public void ensureNoConnection() { 7201 final boolean registered = 7202 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7203 if (registered) { 7204 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7205 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 7206 } 7207 } 7208 } 7209 7210 final class HighContrastTextManager implements HighTextContrastChangeListener { 7211 HighContrastTextManager() { 7212 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 7213 } 7214 @Override 7215 public void onHighTextContrastStateChanged(boolean enabled) { 7216 mAttachInfo.mHighContrastText = enabled; 7217 7218 // Destroy Displaylists so they can be recreated with high contrast recordings 7219 destroyHardwareResources(); 7220 7221 // Schedule redraw, which will rerecord + redraw all text 7222 invalidate(); 7223 } 7224 } 7225 7226 /** 7227 * This class is an interface this ViewAncestor provides to the 7228 * AccessibilityManagerService to the latter can interact with 7229 * the view hierarchy in this ViewAncestor. 7230 */ 7231 static final class AccessibilityInteractionConnection 7232 extends IAccessibilityInteractionConnection.Stub { 7233 private final WeakReference<ViewRootImpl> mViewRootImpl; 7234 7235 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 7236 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 7237 } 7238 7239 @Override 7240 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 7241 Region interactiveRegion, int interactionId, 7242 IAccessibilityInteractionConnectionCallback callback, int flags, 7243 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7244 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7245 if (viewRootImpl != null && viewRootImpl.mView != null) { 7246 viewRootImpl.getAccessibilityInteractionController() 7247 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 7248 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7249 interrogatingTid, spec); 7250 } else { 7251 // We cannot make the call and notify the caller so it does not wait. 7252 try { 7253 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7254 } catch (RemoteException re) { 7255 /* best effort - ignore */ 7256 } 7257 } 7258 } 7259 7260 @Override 7261 public void performAccessibilityAction(long accessibilityNodeId, int action, 7262 Bundle arguments, int interactionId, 7263 IAccessibilityInteractionConnectionCallback callback, int flags, 7264 int interrogatingPid, long interrogatingTid) { 7265 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7266 if (viewRootImpl != null && viewRootImpl.mView != null) { 7267 viewRootImpl.getAccessibilityInteractionController() 7268 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 7269 interactionId, callback, flags, interrogatingPid, interrogatingTid); 7270 } else { 7271 // We cannot make the call and notify the caller so it does not wait. 7272 try { 7273 callback.setPerformAccessibilityActionResult(false, interactionId); 7274 } catch (RemoteException re) { 7275 /* best effort - ignore */ 7276 } 7277 } 7278 } 7279 7280 @Override 7281 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 7282 String viewId, Region interactiveRegion, int interactionId, 7283 IAccessibilityInteractionConnectionCallback callback, int flags, 7284 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7285 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7286 if (viewRootImpl != null && viewRootImpl.mView != null) { 7287 viewRootImpl.getAccessibilityInteractionController() 7288 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 7289 viewId, interactiveRegion, interactionId, callback, flags, 7290 interrogatingPid, interrogatingTid, spec); 7291 } else { 7292 // We cannot make the call and notify the caller so it does not wait. 7293 try { 7294 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7295 } catch (RemoteException re) { 7296 /* best effort - ignore */ 7297 } 7298 } 7299 } 7300 7301 @Override 7302 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 7303 Region interactiveRegion, int interactionId, 7304 IAccessibilityInteractionConnectionCallback callback, int flags, 7305 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7306 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7307 if (viewRootImpl != null && viewRootImpl.mView != null) { 7308 viewRootImpl.getAccessibilityInteractionController() 7309 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 7310 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7311 interrogatingTid, spec); 7312 } else { 7313 // We cannot make the call and notify the caller so it does not wait. 7314 try { 7315 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7316 } catch (RemoteException re) { 7317 /* best effort - ignore */ 7318 } 7319 } 7320 } 7321 7322 @Override 7323 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 7324 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7325 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7326 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7327 if (viewRootImpl != null && viewRootImpl.mView != null) { 7328 viewRootImpl.getAccessibilityInteractionController() 7329 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 7330 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7331 spec); 7332 } else { 7333 // We cannot make the call and notify the caller so it does not wait. 7334 try { 7335 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7336 } catch (RemoteException re) { 7337 /* best effort - ignore */ 7338 } 7339 } 7340 } 7341 7342 @Override 7343 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 7344 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7345 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7346 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7347 if (viewRootImpl != null && viewRootImpl.mView != null) { 7348 viewRootImpl.getAccessibilityInteractionController() 7349 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 7350 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7351 spec); 7352 } else { 7353 // We cannot make the call and notify the caller so it does not wait. 7354 try { 7355 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7356 } catch (RemoteException re) { 7357 /* best effort - ignore */ 7358 } 7359 } 7360 } 7361 } 7362 7363 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 7364 private int mChangeTypes = 0; 7365 7366 public View mSource; 7367 public long mLastEventTimeMillis; 7368 7369 @Override 7370 public void run() { 7371 // The accessibility may be turned off while we were waiting so check again. 7372 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 7373 mLastEventTimeMillis = SystemClock.uptimeMillis(); 7374 AccessibilityEvent event = AccessibilityEvent.obtain(); 7375 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 7376 event.setContentChangeTypes(mChangeTypes); 7377 mSource.sendAccessibilityEventUnchecked(event); 7378 } else { 7379 mLastEventTimeMillis = 0; 7380 } 7381 // In any case reset to initial state. 7382 mSource.resetSubtreeAccessibilityStateChanged(); 7383 mSource = null; 7384 mChangeTypes = 0; 7385 } 7386 7387 public void runOrPost(View source, int changeType) { 7388 if (mSource != null) { 7389 // If there is no common predecessor, then mSource points to 7390 // a removed view, hence in this case always prefer the source. 7391 View predecessor = getCommonPredecessor(mSource, source); 7392 mSource = (predecessor != null) ? predecessor : source; 7393 mChangeTypes |= changeType; 7394 return; 7395 } 7396 mSource = source; 7397 mChangeTypes = changeType; 7398 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 7399 final long minEventIntevalMillis = 7400 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 7401 if (timeSinceLastMillis >= minEventIntevalMillis) { 7402 mSource.removeCallbacks(this); 7403 run(); 7404 } else { 7405 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 7406 } 7407 } 7408 } 7409} 7410