ViewRootImpl.java revision 93cf731b26e2ab4db49bd80f60675b03e40512f3
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY; 20 21import android.Manifest; 22import android.animation.LayoutTransition; 23import android.app.ActivityManagerNative; 24import android.content.ClipDescription; 25import android.content.ComponentCallbacks; 26import android.content.Context; 27import android.content.pm.PackageManager; 28import android.content.res.CompatibilityInfo; 29import android.content.res.Configuration; 30import android.content.res.Resources; 31import android.graphics.Canvas; 32import android.graphics.Matrix; 33import android.graphics.PixelFormat; 34import android.graphics.Point; 35import android.graphics.PointF; 36import android.graphics.PorterDuff; 37import android.graphics.Rect; 38import android.graphics.Region; 39import android.graphics.drawable.Drawable; 40import android.hardware.display.DisplayManager; 41import android.hardware.display.DisplayManager.DisplayListener; 42import android.media.AudioManager; 43import android.os.Binder; 44import android.os.Build; 45import android.os.Bundle; 46import android.os.Debug; 47import android.os.Handler; 48import android.os.Looper; 49import android.os.Message; 50import android.os.ParcelFileDescriptor; 51import android.os.Process; 52import android.os.RemoteException; 53import android.os.SystemClock; 54import android.os.SystemProperties; 55import android.os.Trace; 56import android.util.AndroidRuntimeException; 57import android.util.DisplayMetrics; 58import android.util.Log; 59import android.util.Slog; 60import android.util.TimeUtils; 61import android.util.TypedValue; 62import android.view.Surface.OutOfResourcesException; 63import android.view.View.AttachInfo; 64import android.view.View.MeasureSpec; 65import android.view.accessibility.AccessibilityEvent; 66import android.view.accessibility.AccessibilityManager; 67import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 68import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 69import android.view.accessibility.AccessibilityNodeInfo; 70import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction; 71import android.view.accessibility.AccessibilityNodeProvider; 72import android.view.accessibility.IAccessibilityInteractionConnection; 73import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 74import android.view.animation.AccelerateDecelerateInterpolator; 75import android.view.animation.Interpolator; 76import android.view.inputmethod.InputConnection; 77import android.view.inputmethod.InputMethodManager; 78import android.widget.Scroller; 79 80import com.android.internal.R; 81import com.android.internal.os.SomeArgs; 82import com.android.internal.policy.PhoneFallbackEventHandler; 83import com.android.internal.view.BaseSurfaceHolder; 84import com.android.internal.view.RootViewSurfaceTaker; 85 86import java.io.FileDescriptor; 87import java.io.IOException; 88import java.io.OutputStream; 89import java.io.PrintWriter; 90import java.lang.ref.WeakReference; 91import java.util.ArrayList; 92import java.util.concurrent.CountDownLatch; 93import java.util.HashSet; 94 95/** 96 * The top of a view hierarchy, implementing the needed protocol between View 97 * and the WindowManager. This is for the most part an internal implementation 98 * detail of {@link WindowManagerGlobal}. 99 * 100 * {@hide} 101 */ 102@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 103public final class ViewRootImpl implements ViewParent, 104 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 105 private static final String TAG = "ViewRootImpl"; 106 private static final boolean DBG = false; 107 private static final boolean LOCAL_LOGV = false; 108 /** @noinspection PointlessBooleanExpression*/ 109 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 110 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 111 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 112 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 113 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 114 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 115 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 116 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 117 private static final boolean DEBUG_FPS = false; 118 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 119 120 /** 121 * Set to false if we do not want to use the multi threaded renderer. Note that by disabling 122 * this, WindowCallbacks will not fire. 123 */ 124 private static final boolean USE_MT_RENDERER = true; 125 126 /** 127 * Set this system property to true to force the view hierarchy to render 128 * at 60 Hz. This can be used to measure the potential framerate. 129 */ 130 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 131 132 // properties used by emulator to determine display shape 133 public static final String PROPERTY_EMULATOR_WIN_OUTSET_BOTTOM_PX = 134 "ro.emu.win_outset_bottom_px"; 135 136 /** 137 * Maximum time we allow the user to roll the trackball enough to generate 138 * a key event, before resetting the counters. 139 */ 140 static final int MAX_TRACKBALL_DELAY = 250; 141 142 static final ThreadLocal<HandlerActionQueue> sRunQueues = new ThreadLocal<HandlerActionQueue>(); 143 144 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList(); 145 static boolean sFirstDrawComplete = false; 146 147 static final ArrayList<ComponentCallbacks> sConfigCallbacks = new ArrayList(); 148 149 final ArrayList<WindowCallbacks> mWindowCallbacks = new ArrayList(); 150 final Context mContext; 151 final IWindowSession mWindowSession; 152 final Display mDisplay; 153 final DisplayManager mDisplayManager; 154 final String mBasePackageName; 155 156 final int[] mTmpLocation = new int[2]; 157 158 final TypedValue mTmpValue = new TypedValue(); 159 160 final Thread mThread; 161 162 final WindowLeaked mLocation; 163 164 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 165 166 final W mWindow; 167 168 final int mTargetSdkVersion; 169 170 int mSeq; 171 172 View mView; 173 174 View mAccessibilityFocusedHost; 175 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 176 177 int mViewVisibility; 178 boolean mAppVisible = true; 179 // For recents to freeform transition we need to keep drawing after the app receives information 180 // that it became invisible. This will ignore that information and depend on the decor view 181 // visibility to control drawing. The decor view visibility will get adjusted when the app get 182 // stopped and that's when the app will stop drawing further frames. 183 private boolean mForceDecorViewVisibility = false; 184 int mOrigWindowType = -1; 185 186 /** Whether the window had focus during the most recent traversal. */ 187 boolean mHadWindowFocus; 188 189 /** 190 * Whether the window lost focus during a previous traversal and has not 191 * yet gained it back. Used to determine whether a WINDOW_STATE_CHANGE 192 * accessibility events should be sent during traversal. 193 */ 194 boolean mLostWindowFocus; 195 196 // Set to true if the owner of this window is in the stopped state, 197 // so the window should no longer be active. 198 boolean mStopped = false; 199 200 // Set to true to stop input during an Activity Transition. 201 boolean mPausedForTransition = false; 202 203 boolean mLastInCompatMode = false; 204 205 SurfaceHolder.Callback2 mSurfaceHolderCallback; 206 BaseSurfaceHolder mSurfaceHolder; 207 boolean mIsCreating; 208 boolean mDrawingAllowed; 209 210 final Region mTransparentRegion; 211 final Region mPreviousTransparentRegion; 212 213 int mWidth; 214 int mHeight; 215 Rect mDirty; 216 boolean mIsAnimating; 217 218 private boolean mDragResizing; 219 private int mCanvasOffsetX; 220 private int mCanvasOffsetY; 221 222 CompatibilityInfo.Translator mTranslator; 223 224 final View.AttachInfo mAttachInfo; 225 InputChannel mInputChannel; 226 InputQueue.Callback mInputQueueCallback; 227 InputQueue mInputQueue; 228 FallbackEventHandler mFallbackEventHandler; 229 Choreographer mChoreographer; 230 231 final Rect mTempRect; // used in the transaction to not thrash the heap. 232 final Rect mVisRect; // used to retrieve visible rect of focused view. 233 234 boolean mTraversalScheduled; 235 int mTraversalBarrier; 236 boolean mWillDrawSoon; 237 /** Set to true while in performTraversals for detecting when die(true) is called from internal 238 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 239 boolean mIsInTraversal; 240 boolean mApplyInsetsRequested; 241 boolean mLayoutRequested; 242 boolean mFirst; 243 boolean mReportNextDraw; 244 boolean mFullRedrawNeeded; 245 boolean mNewSurfaceNeeded; 246 boolean mHasHadWindowFocus; 247 boolean mLastWasImTarget; 248 CountDownLatch mWindowDrawCountDown; 249 250 boolean mIsDrawing; 251 int mLastSystemUiVisibility; 252 int mClientWindowLayoutFlags; 253 boolean mLastOverscanRequested; 254 255 // Pool of queued input events. 256 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 257 private QueuedInputEvent mQueuedInputEventPool; 258 private int mQueuedInputEventPoolSize; 259 260 /* Input event queue. 261 * Pending input events are input events waiting to be delivered to the input stages 262 * and handled by the application. 263 */ 264 QueuedInputEvent mPendingInputEventHead; 265 QueuedInputEvent mPendingInputEventTail; 266 int mPendingInputEventCount; 267 boolean mProcessInputEventsScheduled; 268 boolean mUnbufferedInputDispatch; 269 String mPendingInputEventQueueLengthCounterName = "pq"; 270 271 InputStage mFirstInputStage; 272 InputStage mFirstPostImeInputStage; 273 InputStage mSyntheticInputStage; 274 275 boolean mWindowAttributesChanged = false; 276 int mWindowAttributesChangesFlag = 0; 277 278 // These can be accessed by any thread, must be protected with a lock. 279 // Surface can never be reassigned or cleared (use Surface.clear()). 280 final Surface mSurface = new Surface(); 281 282 boolean mAdded; 283 boolean mAddedTouchMode; 284 285 final DisplayAdjustments mDisplayAdjustments; 286 287 // These are accessed by multiple threads. 288 final Rect mWinFrame; // frame given by window manager. 289 290 final Rect mPendingOverscanInsets = new Rect(); 291 final Rect mPendingVisibleInsets = new Rect(); 292 final Rect mPendingStableInsets = new Rect(); 293 final Rect mPendingContentInsets = new Rect(); 294 final Rect mPendingOutsets = new Rect(); 295 final Rect mPendingBackDropFrame = new Rect(); 296 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 297 = new ViewTreeObserver.InternalInsetsInfo(); 298 299 final Rect mDispatchContentInsets = new Rect(); 300 final Rect mDispatchStableInsets = new Rect(); 301 302 private WindowInsets mLastWindowInsets; 303 304 final Configuration mLastConfiguration = new Configuration(); 305 final Configuration mPendingConfiguration = new Configuration(); 306 307 boolean mScrollMayChange; 308 int mSoftInputMode; 309 WeakReference<View> mLastScrolledFocus; 310 int mScrollY; 311 int mCurScrollY; 312 Scroller mScroller; 313 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 314 private ArrayList<LayoutTransition> mPendingTransitions; 315 316 final ViewConfiguration mViewConfiguration; 317 318 /* Drag/drop */ 319 ClipDescription mDragDescription; 320 View mCurrentDragView; 321 volatile Object mLocalDragState; 322 final PointF mDragPoint = new PointF(); 323 final PointF mLastTouchPoint = new PointF(); 324 325 private boolean mProfileRendering; 326 private Choreographer.FrameCallback mRenderProfiler; 327 private boolean mRenderProfilingEnabled; 328 329 // Variables to track frames per second, enabled via DEBUG_FPS flag 330 private long mFpsStartTime = -1; 331 private long mFpsPrevTime = -1; 332 private int mFpsNumFrames; 333 334 private int mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 335 336 /** 337 * see {@link #playSoundEffect(int)} 338 */ 339 AudioManager mAudioManager; 340 341 final AccessibilityManager mAccessibilityManager; 342 343 AccessibilityInteractionController mAccessibilityInteractionController; 344 345 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 346 HighContrastTextManager mHighContrastTextManager; 347 348 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 349 350 HashSet<View> mTempHashSet; 351 352 private final int mDensity; 353 private final int mNoncompatDensity; 354 355 private boolean mInLayout = false; 356 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 357 boolean mHandlingLayoutInLayoutRequest = false; 358 359 private int mViewLayoutDirectionInitial; 360 361 /** Set to true once doDie() has been called. */ 362 private boolean mRemoved; 363 364 /** 365 * Consistency verifier for debugging purposes. 366 */ 367 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 368 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 369 new InputEventConsistencyVerifier(this, 0) : null; 370 371 static final class SystemUiVisibilityInfo { 372 int seq; 373 int globalVisibility; 374 int localValue; 375 int localChanges; 376 } 377 378 public ViewRootImpl(Context context, Display display) { 379 mContext = context; 380 mWindowSession = WindowManagerGlobal.getWindowSession(); 381 mDisplay = display; 382 mBasePackageName = context.getBasePackageName(); 383 384 mDisplayAdjustments = display.getDisplayAdjustments(); 385 386 mThread = Thread.currentThread(); 387 mLocation = new WindowLeaked(null); 388 mLocation.fillInStackTrace(); 389 mWidth = -1; 390 mHeight = -1; 391 mDirty = new Rect(); 392 mTempRect = new Rect(); 393 mVisRect = new Rect(); 394 mWinFrame = new Rect(); 395 mWindow = new W(this); 396 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 397 mViewVisibility = View.GONE; 398 mTransparentRegion = new Region(); 399 mPreviousTransparentRegion = new Region(); 400 mFirst = true; // true for the first time the view is added 401 mAdded = false; 402 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 403 mAccessibilityManager = AccessibilityManager.getInstance(context); 404 mAccessibilityInteractionConnectionManager = 405 new AccessibilityInteractionConnectionManager(); 406 mAccessibilityManager.addAccessibilityStateChangeListener( 407 mAccessibilityInteractionConnectionManager); 408 mHighContrastTextManager = new HighContrastTextManager(); 409 mAccessibilityManager.addHighTextContrastStateChangeListener( 410 mHighContrastTextManager); 411 mViewConfiguration = ViewConfiguration.get(context); 412 mDensity = context.getResources().getDisplayMetrics().densityDpi; 413 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 414 mFallbackEventHandler = new PhoneFallbackEventHandler(context); 415 mChoreographer = Choreographer.getInstance(); 416 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 417 loadSystemProperties(); 418 } 419 420 public static void addFirstDrawHandler(Runnable callback) { 421 synchronized (sFirstDrawHandlers) { 422 if (!sFirstDrawComplete) { 423 sFirstDrawHandlers.add(callback); 424 } 425 } 426 } 427 428 public static void addConfigCallback(ComponentCallbacks callback) { 429 synchronized (sConfigCallbacks) { 430 sConfigCallbacks.add(callback); 431 } 432 } 433 434 public void addWindowCallbacks(WindowCallbacks callback) { 435 if (USE_MT_RENDERER) { 436 synchronized (mWindowCallbacks) { 437 mWindowCallbacks.add(callback); 438 } 439 } 440 } 441 442 public void removeWindowCallbacks(WindowCallbacks callback) { 443 if (USE_MT_RENDERER) { 444 synchronized (mWindowCallbacks) { 445 mWindowCallbacks.remove(callback); 446 } 447 } 448 } 449 450 public void reportDrawFinish() { 451 if (mWindowDrawCountDown != null) { 452 mWindowDrawCountDown.countDown(); 453 } 454 } 455 456 // FIXME for perf testing only 457 private boolean mProfile = false; 458 459 /** 460 * Call this to profile the next traversal call. 461 * FIXME for perf testing only. Remove eventually 462 */ 463 public void profile() { 464 mProfile = true; 465 } 466 467 /** 468 * Indicates whether we are in touch mode. Calling this method triggers an IPC 469 * call and should be avoided whenever possible. 470 * 471 * @return True, if the device is in touch mode, false otherwise. 472 * 473 * @hide 474 */ 475 static boolean isInTouchMode() { 476 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 477 if (windowSession != null) { 478 try { 479 return windowSession.getInTouchMode(); 480 } catch (RemoteException e) { 481 } 482 } 483 return false; 484 } 485 486 /** 487 * We have one child 488 */ 489 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 490 synchronized (this) { 491 if (mView == null) { 492 mView = view; 493 494 mAttachInfo.mDisplayState = mDisplay.getState(); 495 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 496 497 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 498 mFallbackEventHandler.setView(view); 499 mWindowAttributes.copyFrom(attrs); 500 if (mWindowAttributes.packageName == null) { 501 mWindowAttributes.packageName = mBasePackageName; 502 } 503 attrs = mWindowAttributes; 504 // Keep track of the actual window flags supplied by the client. 505 mClientWindowLayoutFlags = attrs.flags; 506 507 setAccessibilityFocus(null, null); 508 509 if (view instanceof RootViewSurfaceTaker) { 510 mSurfaceHolderCallback = 511 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 512 if (mSurfaceHolderCallback != null) { 513 mSurfaceHolder = new TakenSurfaceHolder(); 514 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 515 } 516 } 517 518 // Compute surface insets required to draw at specified Z value. 519 // TODO: Use real shadow insets for a constant max Z. 520 if (!attrs.hasManualSurfaceInsets) { 521 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 522 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 523 } 524 525 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 526 mTranslator = compatibilityInfo.getTranslator(); 527 528 // If the application owns the surface, don't enable hardware acceleration 529 if (mSurfaceHolder == null) { 530 enableHardwareAcceleration(attrs); 531 } 532 533 boolean restore = false; 534 if (mTranslator != null) { 535 mSurface.setCompatibilityTranslator(mTranslator); 536 restore = true; 537 attrs.backup(); 538 mTranslator.translateWindowLayout(attrs); 539 } 540 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 541 542 if (!compatibilityInfo.supportsScreen()) { 543 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 544 mLastInCompatMode = true; 545 } 546 547 mSoftInputMode = attrs.softInputMode; 548 mWindowAttributesChanged = true; 549 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 550 mAttachInfo.mRootView = view; 551 mAttachInfo.mScalingRequired = mTranslator != null; 552 mAttachInfo.mApplicationScale = 553 mTranslator == null ? 1.0f : mTranslator.applicationScale; 554 if (panelParentView != null) { 555 mAttachInfo.mPanelParentWindowToken 556 = panelParentView.getApplicationWindowToken(); 557 } 558 mAdded = true; 559 int res; /* = WindowManagerImpl.ADD_OKAY; */ 560 561 // Schedule the first layout -before- adding to the window 562 // manager, to make sure we do the relayout before receiving 563 // any other events from the system. 564 requestLayout(); 565 if ((mWindowAttributes.inputFeatures 566 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 567 mInputChannel = new InputChannel(); 568 } 569 mForceDecorViewVisibility = (mWindowAttributes.privateFlags 570 & PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY) != 0; 571 try { 572 mOrigWindowType = mWindowAttributes.type; 573 mAttachInfo.mRecomputeGlobalAttributes = true; 574 collectViewAttributes(); 575 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 576 getHostVisibility(), mDisplay.getDisplayId(), 577 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, 578 mAttachInfo.mOutsets, mInputChannel); 579 } catch (RemoteException e) { 580 mAdded = false; 581 mView = null; 582 mAttachInfo.mRootView = null; 583 mInputChannel = null; 584 mFallbackEventHandler.setView(null); 585 unscheduleTraversals(); 586 setAccessibilityFocus(null, null); 587 throw new RuntimeException("Adding window failed", e); 588 } finally { 589 if (restore) { 590 attrs.restore(); 591 } 592 } 593 594 if (mTranslator != null) { 595 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 596 } 597 mPendingOverscanInsets.set(0, 0, 0, 0); 598 mPendingContentInsets.set(mAttachInfo.mContentInsets); 599 mPendingStableInsets.set(mAttachInfo.mStableInsets); 600 mPendingVisibleInsets.set(0, 0, 0, 0); 601 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 602 if (res < WindowManagerGlobal.ADD_OKAY) { 603 mAttachInfo.mRootView = null; 604 mAdded = false; 605 mFallbackEventHandler.setView(null); 606 unscheduleTraversals(); 607 setAccessibilityFocus(null, null); 608 switch (res) { 609 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 610 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 611 throw new WindowManager.BadTokenException( 612 "Unable to add window -- token " + attrs.token 613 + " is not valid; is your activity running?"); 614 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 615 throw new WindowManager.BadTokenException( 616 "Unable to add window -- token " + attrs.token 617 + " is not for an application"); 618 case WindowManagerGlobal.ADD_APP_EXITING: 619 throw new WindowManager.BadTokenException( 620 "Unable to add window -- app for token " + attrs.token 621 + " is exiting"); 622 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 623 throw new WindowManager.BadTokenException( 624 "Unable to add window -- window " + mWindow 625 + " has already been added"); 626 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 627 // Silently ignore -- we would have just removed it 628 // right away, anyway. 629 return; 630 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 631 throw new WindowManager.BadTokenException("Unable to add window " 632 + mWindow + " -- another window of type " 633 + mWindowAttributes.type + " already exists"); 634 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 635 throw new WindowManager.BadTokenException("Unable to add window " 636 + mWindow + " -- permission denied for window type " 637 + mWindowAttributes.type); 638 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 639 throw new WindowManager.InvalidDisplayException("Unable to add window " 640 + mWindow + " -- the specified display can not be found"); 641 case WindowManagerGlobal.ADD_INVALID_TYPE: 642 throw new WindowManager.InvalidDisplayException("Unable to add window " 643 + mWindow + " -- the specified window type " 644 + mWindowAttributes.type + " is not valid"); 645 } 646 throw new RuntimeException( 647 "Unable to add window -- unknown error code " + res); 648 } 649 650 if (view instanceof RootViewSurfaceTaker) { 651 mInputQueueCallback = 652 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 653 } 654 if (mInputChannel != null) { 655 if (mInputQueueCallback != null) { 656 mInputQueue = new InputQueue(); 657 mInputQueueCallback.onInputQueueCreated(mInputQueue); 658 } 659 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 660 Looper.myLooper()); 661 } 662 663 view.assignParent(this); 664 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 665 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 666 667 if (mAccessibilityManager.isEnabled()) { 668 mAccessibilityInteractionConnectionManager.ensureConnection(); 669 } 670 671 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 672 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 673 } 674 675 // Set up the input pipeline. 676 CharSequence counterSuffix = attrs.getTitle(); 677 mSyntheticInputStage = new SyntheticInputStage(); 678 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 679 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 680 "aq:native-post-ime:" + counterSuffix); 681 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 682 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 683 "aq:ime:" + counterSuffix); 684 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 685 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 686 "aq:native-pre-ime:" + counterSuffix); 687 688 mFirstInputStage = nativePreImeStage; 689 mFirstPostImeInputStage = earlyPostImeStage; 690 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 691 } 692 } 693 } 694 695 /** Whether the window is in local focus mode or not */ 696 private boolean isInLocalFocusMode() { 697 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 698 } 699 700 public int getWindowFlags() { 701 return mWindowAttributes.flags; 702 } 703 704 public int getDisplayId() { 705 return mDisplay.getDisplayId(); 706 } 707 708 public CharSequence getTitle() { 709 return mWindowAttributes.getTitle(); 710 } 711 712 void destroyHardwareResources() { 713 if (mAttachInfo.mHardwareRenderer != null) { 714 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 715 mAttachInfo.mHardwareRenderer.destroy(); 716 } 717 } 718 719 public void detachFunctor(long functor) { 720 if (mAttachInfo.mHardwareRenderer != null) { 721 // Fence so that any pending invokeFunctor() messages will be processed 722 // before we return from detachFunctor. 723 mAttachInfo.mHardwareRenderer.stopDrawing(); 724 } 725 } 726 727 /** 728 * Schedules the functor for execution in either kModeProcess or 729 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 730 * 731 * @param functor The native functor to invoke 732 * @param waitForCompletion If true, this will not return until the functor 733 * has invoked. If false, the functor may be invoked 734 * asynchronously. 735 */ 736 public void invokeFunctor(long functor, boolean waitForCompletion) { 737 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 738 } 739 740 public void registerAnimatingRenderNode(RenderNode animator) { 741 if (mAttachInfo.mHardwareRenderer != null) { 742 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 743 } else { 744 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 745 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 746 } 747 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 748 } 749 } 750 751 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 752 mAttachInfo.mHardwareAccelerated = false; 753 mAttachInfo.mHardwareAccelerationRequested = false; 754 755 // Don't enable hardware acceleration when the application is in compatibility mode 756 if (mTranslator != null) return; 757 758 // Try to enable hardware acceleration if requested 759 final boolean hardwareAccelerated = 760 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 761 762 if (hardwareAccelerated) { 763 if (!HardwareRenderer.isAvailable()) { 764 return; 765 } 766 767 // Persistent processes (including the system) should not do 768 // accelerated rendering on low-end devices. In that case, 769 // sRendererDisabled will be set. In addition, the system process 770 // itself should never do accelerated rendering. In that case, both 771 // sRendererDisabled and sSystemRendererDisabled are set. When 772 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 773 // can be used by code on the system process to escape that and enable 774 // HW accelerated drawing. (This is basically for the lock screen.) 775 776 final boolean fakeHwAccelerated = (attrs.privateFlags & 777 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 778 final boolean forceHwAccelerated = (attrs.privateFlags & 779 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 780 781 if (fakeHwAccelerated) { 782 // This is exclusively for the preview windows the window manager 783 // shows for launching applications, so they will look more like 784 // the app being launched. 785 mAttachInfo.mHardwareAccelerationRequested = true; 786 } else if (!HardwareRenderer.sRendererDisabled 787 || (HardwareRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 788 if (mAttachInfo.mHardwareRenderer != null) { 789 mAttachInfo.mHardwareRenderer.destroy(); 790 } 791 792 final Rect insets = attrs.surfaceInsets; 793 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 794 || insets.top != 0 || insets.bottom != 0; 795 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 796 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(mContext, translucent); 797 if (mAttachInfo.mHardwareRenderer != null) { 798 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 799 mAttachInfo.mHardwareAccelerated = 800 mAttachInfo.mHardwareAccelerationRequested = true; 801 } 802 } 803 } 804 } 805 806 public View getView() { 807 return mView; 808 } 809 810 final WindowLeaked getLocation() { 811 return mLocation; 812 } 813 814 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 815 synchronized (this) { 816 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 817 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 818 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 819 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 820 final int oldSoftInputMode = mWindowAttributes.softInputMode; 821 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 822 823 // Keep track of the actual window flags supplied by the client. 824 mClientWindowLayoutFlags = attrs.flags; 825 826 // Preserve compatible window flag if exists. 827 final int compatibleWindowFlag = mWindowAttributes.privateFlags 828 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 829 830 // Transfer over system UI visibility values as they carry current state. 831 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 832 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 833 834 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 835 if ((mWindowAttributesChangesFlag 836 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 837 // Recompute system ui visibility. 838 mAttachInfo.mRecomputeGlobalAttributes = true; 839 } 840 if (mWindowAttributes.packageName == null) { 841 mWindowAttributes.packageName = mBasePackageName; 842 } 843 mWindowAttributes.privateFlags |= compatibleWindowFlag; 844 845 // Restore old surface insets. 846 mWindowAttributes.surfaceInsets.set( 847 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 848 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 849 850 applyKeepScreenOnFlag(mWindowAttributes); 851 852 if (newView) { 853 mSoftInputMode = attrs.softInputMode; 854 requestLayout(); 855 } 856 857 // Don't lose the mode we last auto-computed. 858 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 859 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 860 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 861 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 862 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 863 } 864 865 mWindowAttributesChanged = true; 866 scheduleTraversals(); 867 } 868 } 869 870 void handleAppVisibility(boolean visible) { 871 if (mAppVisible != visible) { 872 mAppVisible = visible; 873 scheduleTraversals(); 874 if (!mAppVisible) { 875 WindowManagerGlobal.trimForeground(); 876 } 877 } 878 } 879 880 void handleGetNewSurface() { 881 mNewSurfaceNeeded = true; 882 mFullRedrawNeeded = true; 883 scheduleTraversals(); 884 } 885 886 private final DisplayListener mDisplayListener = new DisplayListener() { 887 @Override 888 public void onDisplayChanged(int displayId) { 889 if (mView != null && mDisplay.getDisplayId() == displayId) { 890 final int oldDisplayState = mAttachInfo.mDisplayState; 891 final int newDisplayState = mDisplay.getState(); 892 if (oldDisplayState != newDisplayState) { 893 mAttachInfo.mDisplayState = newDisplayState; 894 pokeDrawLockIfNeeded(); 895 if (oldDisplayState != Display.STATE_UNKNOWN) { 896 final int oldScreenState = toViewScreenState(oldDisplayState); 897 final int newScreenState = toViewScreenState(newDisplayState); 898 if (oldScreenState != newScreenState) { 899 mView.dispatchScreenStateChanged(newScreenState); 900 } 901 if (oldDisplayState == Display.STATE_OFF) { 902 // Draw was suppressed so we need to for it to happen here. 903 mFullRedrawNeeded = true; 904 scheduleTraversals(); 905 } 906 } 907 } 908 } 909 } 910 911 @Override 912 public void onDisplayRemoved(int displayId) { 913 } 914 915 @Override 916 public void onDisplayAdded(int displayId) { 917 } 918 919 private int toViewScreenState(int displayState) { 920 return displayState == Display.STATE_OFF ? 921 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 922 } 923 }; 924 925 void pokeDrawLockIfNeeded() { 926 final int displayState = mAttachInfo.mDisplayState; 927 if (mView != null && mAdded && mTraversalScheduled 928 && (displayState == Display.STATE_DOZE 929 || displayState == Display.STATE_DOZE_SUSPEND)) { 930 try { 931 mWindowSession.pokeDrawLock(mWindow); 932 } catch (RemoteException ex) { 933 // System server died, oh well. 934 } 935 } 936 } 937 938 @Override 939 public void requestFitSystemWindows() { 940 checkThread(); 941 mApplyInsetsRequested = true; 942 scheduleTraversals(); 943 } 944 945 @Override 946 public void requestLayout() { 947 if (!mHandlingLayoutInLayoutRequest) { 948 checkThread(); 949 mLayoutRequested = true; 950 scheduleTraversals(); 951 } 952 } 953 954 @Override 955 public boolean isLayoutRequested() { 956 return mLayoutRequested; 957 } 958 959 void invalidate() { 960 mDirty.set(0, 0, mWidth, mHeight); 961 if (!mWillDrawSoon) { 962 scheduleTraversals(); 963 } 964 } 965 966 void invalidateWorld(View view) { 967 view.invalidate(); 968 if (view instanceof ViewGroup) { 969 ViewGroup parent = (ViewGroup) view; 970 for (int i = 0; i < parent.getChildCount(); i++) { 971 invalidateWorld(parent.getChildAt(i)); 972 } 973 } 974 } 975 976 @Override 977 public void invalidateChild(View child, Rect dirty) { 978 invalidateChildInParent(null, dirty); 979 } 980 981 @Override 982 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 983 checkThread(); 984 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 985 986 if (dirty == null) { 987 invalidate(); 988 return null; 989 } else if (dirty.isEmpty() && !mIsAnimating) { 990 return null; 991 } 992 993 if (mCurScrollY != 0 || mTranslator != null) { 994 mTempRect.set(dirty); 995 dirty = mTempRect; 996 if (mCurScrollY != 0) { 997 dirty.offset(0, -mCurScrollY); 998 } 999 if (mTranslator != null) { 1000 mTranslator.translateRectInAppWindowToScreen(dirty); 1001 } 1002 if (mAttachInfo.mScalingRequired) { 1003 dirty.inset(-1, -1); 1004 } 1005 } 1006 1007 invalidateRectOnScreen(dirty); 1008 1009 return null; 1010 } 1011 1012 private void invalidateRectOnScreen(Rect dirty) { 1013 final Rect localDirty = mDirty; 1014 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 1015 mAttachInfo.mSetIgnoreDirtyState = true; 1016 mAttachInfo.mIgnoreDirtyState = true; 1017 } 1018 1019 // Add the new dirty rect to the current one 1020 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 1021 // Intersect with the bounds of the window to skip 1022 // updates that lie outside of the visible region 1023 final float appScale = mAttachInfo.mApplicationScale; 1024 final boolean intersected = localDirty.intersect(0, 0, 1025 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 1026 if (!intersected) { 1027 localDirty.setEmpty(); 1028 } 1029 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 1030 scheduleTraversals(); 1031 } 1032 } 1033 1034 void setWindowStopped(boolean stopped) { 1035 if (mStopped != stopped) { 1036 mStopped = stopped; 1037 if (!mStopped) { 1038 scheduleTraversals(); 1039 } 1040 } 1041 } 1042 1043 /** 1044 * Block the input events during an Activity Transition. The KEYCODE_BACK event is allowed 1045 * through to allow quick reversal of the Activity Transition. 1046 * 1047 * @param paused true to pause, false to resume. 1048 */ 1049 public void setPausedForTransition(boolean paused) { 1050 mPausedForTransition = paused; 1051 } 1052 1053 @Override 1054 public ViewParent getParent() { 1055 return null; 1056 } 1057 1058 @Override 1059 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 1060 if (child != mView) { 1061 throw new RuntimeException("child is not mine, honest!"); 1062 } 1063 // Note: don't apply scroll offset, because we want to know its 1064 // visibility in the virtual canvas being given to the view hierarchy. 1065 return r.intersect(0, 0, mWidth, mHeight); 1066 } 1067 1068 @Override 1069 public void bringChildToFront(View child) { 1070 } 1071 1072 int getHostVisibility() { 1073 return (mAppVisible || mForceDecorViewVisibility) ? mView.getVisibility() : View.GONE; 1074 } 1075 1076 /** 1077 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1078 * This list will be cleared after the transitions on the list are start()'ed. These 1079 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1080 * happens during the layout phase of traversal, which we want to complete before any of the 1081 * animations are started (because those animations may side-effect properties that layout 1082 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1083 * to the list and it is started just prior to starting the drawing phase of traversal. 1084 * 1085 * @param transition The LayoutTransition to be started on the next traversal. 1086 * 1087 * @hide 1088 */ 1089 public void requestTransitionStart(LayoutTransition transition) { 1090 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1091 if (mPendingTransitions == null) { 1092 mPendingTransitions = new ArrayList<LayoutTransition>(); 1093 } 1094 mPendingTransitions.add(transition); 1095 } 1096 } 1097 1098 /** 1099 * Notifies the HardwareRenderer that a new frame will be coming soon. 1100 * Currently only {@link ThreadedRenderer} cares about this, and uses 1101 * this knowledge to adjust the scheduling of off-thread animations 1102 */ 1103 void notifyRendererOfFramePending() { 1104 if (mAttachInfo.mHardwareRenderer != null) { 1105 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1106 } 1107 } 1108 1109 void scheduleTraversals() { 1110 if (!mTraversalScheduled) { 1111 mTraversalScheduled = true; 1112 mTraversalBarrier = mHandler.getLooper().getQueue().postSyncBarrier(); 1113 mChoreographer.postCallback( 1114 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1115 if (!mUnbufferedInputDispatch) { 1116 scheduleConsumeBatchedInput(); 1117 } 1118 notifyRendererOfFramePending(); 1119 pokeDrawLockIfNeeded(); 1120 } 1121 } 1122 1123 void unscheduleTraversals() { 1124 if (mTraversalScheduled) { 1125 mTraversalScheduled = false; 1126 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1127 mChoreographer.removeCallbacks( 1128 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1129 } 1130 } 1131 1132 void doTraversal() { 1133 if (mTraversalScheduled) { 1134 mTraversalScheduled = false; 1135 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1136 1137 if (mProfile) { 1138 Debug.startMethodTracing("ViewAncestor"); 1139 } 1140 1141 performTraversals(); 1142 1143 if (mProfile) { 1144 Debug.stopMethodTracing(); 1145 mProfile = false; 1146 } 1147 } 1148 } 1149 1150 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1151 // Update window's global keep screen on flag: if a view has requested 1152 // that the screen be kept on, then it is always set; otherwise, it is 1153 // set to whatever the client last requested for the global state. 1154 if (mAttachInfo.mKeepScreenOn) { 1155 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1156 } else { 1157 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1158 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1159 } 1160 } 1161 1162 private boolean collectViewAttributes() { 1163 if (mAttachInfo.mRecomputeGlobalAttributes) { 1164 //Log.i(TAG, "Computing view hierarchy attributes!"); 1165 mAttachInfo.mRecomputeGlobalAttributes = false; 1166 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1167 mAttachInfo.mKeepScreenOn = false; 1168 mAttachInfo.mSystemUiVisibility = 0; 1169 mAttachInfo.mHasSystemUiListeners = false; 1170 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1171 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1172 WindowManager.LayoutParams params = mWindowAttributes; 1173 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1174 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1175 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1176 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1177 applyKeepScreenOnFlag(params); 1178 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1179 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1180 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1181 return true; 1182 } 1183 } 1184 return false; 1185 } 1186 1187 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1188 int vis = 0; 1189 // Translucent decor window flags imply stable system ui visibility. 1190 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1191 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1192 } 1193 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1194 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1195 } 1196 return vis; 1197 } 1198 1199 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1200 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1201 int childWidthMeasureSpec; 1202 int childHeightMeasureSpec; 1203 boolean windowSizeMayChange = false; 1204 1205 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1206 "Measuring " + host + " in display " + desiredWindowWidth 1207 + "x" + desiredWindowHeight + "..."); 1208 1209 boolean goodMeasure = false; 1210 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1211 // On large screens, we don't want to allow dialogs to just 1212 // stretch to fill the entire width of the screen to display 1213 // one line of text. First try doing the layout at a smaller 1214 // size to see if it will fit. 1215 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1216 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1217 int baseSize = 0; 1218 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1219 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1220 } 1221 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1222 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1223 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1224 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1225 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1226 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1227 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1228 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1229 goodMeasure = true; 1230 } else { 1231 // Didn't fit in that size... try expanding a bit. 1232 baseSize = (baseSize+desiredWindowWidth)/2; 1233 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1234 + baseSize); 1235 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1236 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1237 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1238 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1239 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1240 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1241 goodMeasure = true; 1242 } 1243 } 1244 } 1245 } 1246 1247 if (!goodMeasure) { 1248 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1249 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1250 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1251 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1252 windowSizeMayChange = true; 1253 } 1254 } 1255 1256 if (DBG) { 1257 System.out.println("======================================"); 1258 System.out.println("performTraversals -- after measure"); 1259 host.debug(); 1260 } 1261 1262 return windowSizeMayChange; 1263 } 1264 1265 /** 1266 * Modifies the input matrix such that it maps view-local coordinates to 1267 * on-screen coordinates. 1268 * 1269 * @param m input matrix to modify 1270 */ 1271 void transformMatrixToGlobal(Matrix m) { 1272 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1273 } 1274 1275 /** 1276 * Modifies the input matrix such that it maps on-screen coordinates to 1277 * view-local coordinates. 1278 * 1279 * @param m input matrix to modify 1280 */ 1281 void transformMatrixToLocal(Matrix m) { 1282 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1283 } 1284 1285 /* package */ WindowInsets getWindowInsets(boolean forceConstruct) { 1286 if (mLastWindowInsets == null || forceConstruct) { 1287 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1288 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1289 Rect contentInsets = mDispatchContentInsets; 1290 Rect stableInsets = mDispatchStableInsets; 1291 // For dispatch we preserve old logic, but for direct requests from Views we allow to 1292 // immediately use pending insets. 1293 if (!forceConstruct 1294 && (!mPendingContentInsets.equals(contentInsets) || 1295 !mPendingStableInsets.equals(stableInsets))) { 1296 contentInsets = mPendingContentInsets; 1297 stableInsets = mPendingStableInsets; 1298 } 1299 Rect outsets = mAttachInfo.mOutsets; 1300 if (outsets.left > 0 || outsets.top > 0 || outsets.right > 0 || outsets.bottom > 0) { 1301 contentInsets = new Rect(contentInsets.left + outsets.left, 1302 contentInsets.top + outsets.top, contentInsets.right + outsets.right, 1303 contentInsets.bottom + outsets.bottom); 1304 } 1305 mLastWindowInsets = new WindowInsets(contentInsets, 1306 null /* windowDecorInsets */, stableInsets, 1307 mContext.getResources().getConfiguration().isScreenRound()); 1308 } 1309 return mLastWindowInsets; 1310 } 1311 1312 void dispatchApplyInsets(View host) { 1313 host.dispatchApplyWindowInsets(getWindowInsets(true /* forceConstruct */)); 1314 } 1315 1316 private void performTraversals() { 1317 // cache mView since it is used so much below... 1318 final View host = mView; 1319 1320 if (DBG) { 1321 System.out.println("======================================"); 1322 System.out.println("performTraversals"); 1323 host.debug(); 1324 } 1325 1326 if (host == null || !mAdded) 1327 return; 1328 1329 mIsInTraversal = true; 1330 mWillDrawSoon = true; 1331 boolean windowSizeMayChange = false; 1332 boolean newSurface = false; 1333 boolean surfaceChanged = false; 1334 WindowManager.LayoutParams lp = mWindowAttributes; 1335 1336 int desiredWindowWidth; 1337 int desiredWindowHeight; 1338 1339 final int viewVisibility = getHostVisibility(); 1340 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1341 || mNewSurfaceNeeded; 1342 1343 WindowManager.LayoutParams params = null; 1344 if (mWindowAttributesChanged) { 1345 mWindowAttributesChanged = false; 1346 surfaceChanged = true; 1347 params = lp; 1348 } 1349 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1350 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1351 params = lp; 1352 mFullRedrawNeeded = true; 1353 mLayoutRequested = true; 1354 if (mLastInCompatMode) { 1355 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1356 mLastInCompatMode = false; 1357 } else { 1358 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1359 mLastInCompatMode = true; 1360 } 1361 } 1362 1363 mWindowAttributesChangesFlag = 0; 1364 1365 Rect frame = mWinFrame; 1366 if (mFirst) { 1367 mFullRedrawNeeded = true; 1368 mLayoutRequested = true; 1369 1370 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1371 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1372 // NOTE -- system code, won't try to do compat mode. 1373 Point size = new Point(); 1374 mDisplay.getRealSize(size); 1375 desiredWindowWidth = size.x; 1376 desiredWindowHeight = size.y; 1377 } else { 1378 DisplayMetrics packageMetrics = 1379 mView.getContext().getResources().getDisplayMetrics(); 1380 desiredWindowWidth = packageMetrics.widthPixels; 1381 desiredWindowHeight = packageMetrics.heightPixels; 1382 } 1383 1384 // We used to use the following condition to choose 32 bits drawing caches: 1385 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1386 // However, windows are now always 32 bits by default, so choose 32 bits 1387 mAttachInfo.mUse32BitDrawingCache = true; 1388 mAttachInfo.mHasWindowFocus = false; 1389 mAttachInfo.mWindowVisibility = viewVisibility; 1390 mAttachInfo.mRecomputeGlobalAttributes = false; 1391 viewVisibilityChanged = false; 1392 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1393 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1394 // Set the layout direction if it has not been set before (inherit is the default) 1395 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1396 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1397 } 1398 host.dispatchAttachedToWindow(mAttachInfo, 0); 1399 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1400 dispatchApplyInsets(host); 1401 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1402 1403 } else { 1404 desiredWindowWidth = frame.width(); 1405 desiredWindowHeight = frame.height(); 1406 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1407 if (DEBUG_ORIENTATION) Log.v(TAG, 1408 "View " + host + " resized to: " + frame); 1409 mFullRedrawNeeded = true; 1410 mLayoutRequested = true; 1411 windowSizeMayChange = true; 1412 } 1413 } 1414 1415 if (viewVisibilityChanged) { 1416 mAttachInfo.mWindowVisibility = viewVisibility; 1417 host.dispatchWindowVisibilityChanged(viewVisibility); 1418 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1419 endDragResizing(); 1420 destroyHardwareResources(); 1421 } 1422 if (viewVisibility == View.GONE) { 1423 // After making a window gone, we will count it as being 1424 // shown for the first time the next time it gets focus. 1425 mHasHadWindowFocus = false; 1426 } 1427 } 1428 1429 // Non-visible windows can't hold accessibility focus. 1430 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1431 host.clearAccessibilityFocus(); 1432 } 1433 1434 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1435 getRunQueue().executeActions(mAttachInfo.mHandler); 1436 1437 boolean insetsChanged = false; 1438 1439 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1440 if (layoutRequested) { 1441 1442 final Resources res = mView.getContext().getResources(); 1443 1444 if (mFirst) { 1445 // make sure touch mode code executes by setting cached value 1446 // to opposite of the added touch mode. 1447 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1448 ensureTouchModeLocally(mAddedTouchMode); 1449 } else { 1450 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1451 insetsChanged = true; 1452 } 1453 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1454 insetsChanged = true; 1455 } 1456 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1457 insetsChanged = true; 1458 } 1459 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1460 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1461 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1462 + mAttachInfo.mVisibleInsets); 1463 } 1464 if (!mPendingOutsets.equals(mAttachInfo.mOutsets)) { 1465 insetsChanged = true; 1466 } 1467 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1468 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1469 windowSizeMayChange = true; 1470 1471 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1472 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1473 // NOTE -- system code, won't try to do compat mode. 1474 Point size = new Point(); 1475 mDisplay.getRealSize(size); 1476 desiredWindowWidth = size.x; 1477 desiredWindowHeight = size.y; 1478 } else { 1479 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1480 desiredWindowWidth = packageMetrics.widthPixels; 1481 desiredWindowHeight = packageMetrics.heightPixels; 1482 } 1483 } 1484 } 1485 1486 // Ask host how big it wants to be 1487 windowSizeMayChange |= measureHierarchy(host, lp, res, 1488 desiredWindowWidth, desiredWindowHeight); 1489 } 1490 1491 if (collectViewAttributes()) { 1492 params = lp; 1493 } 1494 if (mAttachInfo.mForceReportNewAttributes) { 1495 mAttachInfo.mForceReportNewAttributes = false; 1496 params = lp; 1497 } 1498 1499 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1500 mAttachInfo.mViewVisibilityChanged = false; 1501 int resizeMode = mSoftInputMode & 1502 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1503 // If we are in auto resize mode, then we need to determine 1504 // what mode to use now. 1505 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1506 final int N = mAttachInfo.mScrollContainers.size(); 1507 for (int i=0; i<N; i++) { 1508 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1509 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1510 } 1511 } 1512 if (resizeMode == 0) { 1513 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1514 } 1515 if ((lp.softInputMode & 1516 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1517 lp.softInputMode = (lp.softInputMode & 1518 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1519 resizeMode; 1520 params = lp; 1521 } 1522 } 1523 } 1524 1525 if (params != null) { 1526 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1527 if (!PixelFormat.formatHasAlpha(params.format)) { 1528 params.format = PixelFormat.TRANSLUCENT; 1529 } 1530 } 1531 mAttachInfo.mOverscanRequested = (params.flags 1532 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1533 } 1534 1535 if (mApplyInsetsRequested) { 1536 mApplyInsetsRequested = false; 1537 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1538 dispatchApplyInsets(host); 1539 if (mLayoutRequested) { 1540 // Short-circuit catching a new layout request here, so 1541 // we don't need to go through two layout passes when things 1542 // change due to fitting system windows, which can happen a lot. 1543 windowSizeMayChange |= measureHierarchy(host, lp, 1544 mView.getContext().getResources(), 1545 desiredWindowWidth, desiredWindowHeight); 1546 } 1547 } 1548 1549 if (layoutRequested) { 1550 // Clear this now, so that if anything requests a layout in the 1551 // rest of this function we will catch it and re-run a full 1552 // layout pass. 1553 mLayoutRequested = false; 1554 } 1555 1556 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1557 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1558 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1559 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1560 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1561 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1562 windowShouldResize |= mDragResizing; 1563 1564 // If the backdrop frame doesn't equal to a frame, we are starting a resize operation, so 1565 // force it to be resized. 1566 windowShouldResize |= !mPendingBackDropFrame.equals(mWinFrame); 1567 1568 // Determine whether to compute insets. 1569 // If there are no inset listeners remaining then we may still need to compute 1570 // insets in case the old insets were non-empty and must be reset. 1571 final boolean computesInternalInsets = 1572 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1573 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1574 1575 boolean insetsPending = false; 1576 int relayoutResult = 0; 1577 1578 final boolean isViewVisible = viewVisibility == View.VISIBLE; 1579 if (mFirst || windowShouldResize || insetsChanged || 1580 viewVisibilityChanged || params != null) { 1581 1582 if (isViewVisible) { 1583 // If this window is giving internal insets to the window 1584 // manager, and it is being added or changing its visibility, 1585 // then we want to first give the window manager "fake" 1586 // insets to cause it to effectively ignore the content of 1587 // the window during layout. This avoids it briefly causing 1588 // other windows to resize/move based on the raw frame of the 1589 // window, waiting until we can finish laying out this window 1590 // and get back to the window manager with the ultimately 1591 // computed insets. 1592 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1593 } 1594 1595 if (mSurfaceHolder != null) { 1596 mSurfaceHolder.mSurfaceLock.lock(); 1597 mDrawingAllowed = true; 1598 } 1599 1600 boolean hwInitialized = false; 1601 boolean contentInsetsChanged = false; 1602 boolean hadSurface = mSurface.isValid(); 1603 1604 try { 1605 if (DEBUG_LAYOUT) { 1606 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1607 host.getMeasuredHeight() + ", params=" + params); 1608 } 1609 1610 if (mAttachInfo.mHardwareRenderer != null) { 1611 // relayoutWindow may decide to destroy mSurface. As that decision 1612 // happens in WindowManager service, we need to be defensive here 1613 // and stop using the surface in case it gets destroyed. 1614 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1615 // Animations were running so we need to push a frame 1616 // to resume them 1617 mDirty.set(0, 0, mWidth, mHeight); 1618 } 1619 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1620 } 1621 final int surfaceGenerationId = mSurface.getGenerationId(); 1622 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1623 1624 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1625 + " overscan=" + mPendingOverscanInsets.toShortString() 1626 + " content=" + mPendingContentInsets.toShortString() 1627 + " visible=" + mPendingVisibleInsets.toShortString() 1628 + " visible=" + mPendingStableInsets.toShortString() 1629 + " outsets=" + mPendingOutsets.toShortString() 1630 + " surface=" + mSurface); 1631 1632 if (mPendingConfiguration.seq != 0) { 1633 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1634 + mPendingConfiguration); 1635 updateConfiguration(new Configuration(mPendingConfiguration), !mFirst); 1636 mPendingConfiguration.seq = 0; 1637 } 1638 1639 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1640 mAttachInfo.mOverscanInsets); 1641 contentInsetsChanged = !mPendingContentInsets.equals( 1642 mAttachInfo.mContentInsets); 1643 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1644 mAttachInfo.mVisibleInsets); 1645 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1646 mAttachInfo.mStableInsets); 1647 final boolean outsetsChanged = !mPendingOutsets.equals(mAttachInfo.mOutsets); 1648 final boolean surfaceSizeChanged = (relayoutResult 1649 & WindowManagerGlobal.RELAYOUT_RES_SURFACE_RESIZED) != 0; 1650 if (contentInsetsChanged) { 1651 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1652 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1653 + mAttachInfo.mContentInsets); 1654 } 1655 if (overscanInsetsChanged) { 1656 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1657 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1658 + mAttachInfo.mOverscanInsets); 1659 // Need to relayout with content insets. 1660 contentInsetsChanged = true; 1661 } 1662 if (stableInsetsChanged) { 1663 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1664 if (DEBUG_LAYOUT) Log.v(TAG, "Decor insets changing to: " 1665 + mAttachInfo.mStableInsets); 1666 // Need to relayout with content insets. 1667 contentInsetsChanged = true; 1668 } 1669 if (contentInsetsChanged || mLastSystemUiVisibility != 1670 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1671 || mLastOverscanRequested != mAttachInfo.mOverscanRequested 1672 || outsetsChanged) { 1673 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1674 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1675 mAttachInfo.mOutsets.set(mPendingOutsets); 1676 mApplyInsetsRequested = false; 1677 dispatchApplyInsets(host); 1678 } 1679 if (visibleInsetsChanged) { 1680 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1681 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1682 + mAttachInfo.mVisibleInsets); 1683 } 1684 1685 if (!hadSurface) { 1686 if (mSurface.isValid()) { 1687 // If we are creating a new surface, then we need to 1688 // completely redraw it. Also, when we get to the 1689 // point of drawing it we will hold off and schedule 1690 // a new traversal instead. This is so we can tell the 1691 // window manager about all of the windows being displayed 1692 // before actually drawing them, so it can display then 1693 // all at once. 1694 newSurface = true; 1695 mFullRedrawNeeded = true; 1696 mPreviousTransparentRegion.setEmpty(); 1697 1698 // Only initialize up-front if transparent regions are not 1699 // requested, otherwise defer to see if the entire window 1700 // will be transparent 1701 if (mAttachInfo.mHardwareRenderer != null) { 1702 try { 1703 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1704 mSurface); 1705 if (hwInitialized && (host.mPrivateFlags 1706 & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) == 0) { 1707 // Don't pre-allocate if transparent regions 1708 // are requested as they may not be needed 1709 mSurface.allocateBuffers(); 1710 } 1711 } catch (OutOfResourcesException e) { 1712 handleOutOfResourcesException(e); 1713 return; 1714 } 1715 } 1716 } 1717 } else if (!mSurface.isValid()) { 1718 // If the surface has been removed, then reset the scroll 1719 // positions. 1720 if (mLastScrolledFocus != null) { 1721 mLastScrolledFocus.clear(); 1722 } 1723 mScrollY = mCurScrollY = 0; 1724 if (mView instanceof RootViewSurfaceTaker) { 1725 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1726 } 1727 if (mScroller != null) { 1728 mScroller.abortAnimation(); 1729 } 1730 // Our surface is gone 1731 if (mAttachInfo.mHardwareRenderer != null && 1732 mAttachInfo.mHardwareRenderer.isEnabled()) { 1733 mAttachInfo.mHardwareRenderer.destroy(); 1734 } 1735 } else if ((surfaceGenerationId != mSurface.getGenerationId() 1736 || surfaceSizeChanged) 1737 && mSurfaceHolder == null 1738 && mAttachInfo.mHardwareRenderer != null) { 1739 mFullRedrawNeeded = true; 1740 try { 1741 // Need to do updateSurface (which leads to CanvasContext::setSurface and 1742 // re-create the EGLSurface) if either the Surface changed (as indicated by 1743 // generation id), or WindowManager changed the surface size. The latter is 1744 // because on some chips, changing the consumer side's BufferQueue size may 1745 // not take effect immediately unless we create a new EGLSurface. 1746 // Note that frame size change doesn't always imply surface size change (eg. 1747 // drag resizing uses fullscreen surface), need to check surfaceSizeChanged 1748 // flag from WindowManager. 1749 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1750 } catch (OutOfResourcesException e) { 1751 handleOutOfResourcesException(e); 1752 return; 1753 } 1754 } 1755 1756 final boolean dragResizing = (relayoutResult 1757 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING) != 0; 1758 if (mDragResizing != dragResizing) { 1759 if (dragResizing) { 1760 startDragResizing(mPendingBackDropFrame); 1761 } else { 1762 // We shouldn't come here, but if we come we should end the resize. 1763 endDragResizing(); 1764 } 1765 } 1766 if (!USE_MT_RENDERER) { 1767 if (dragResizing) { 1768 mCanvasOffsetX = mWinFrame.left; 1769 mCanvasOffsetY = mWinFrame.top; 1770 } else { 1771 mCanvasOffsetX = mCanvasOffsetY = 0; 1772 } 1773 } 1774 } catch (RemoteException e) { 1775 } 1776 1777 if (DEBUG_ORIENTATION) Log.v( 1778 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1779 1780 mAttachInfo.mWindowLeft = frame.left; 1781 mAttachInfo.mWindowTop = frame.top; 1782 1783 // !!FIXME!! This next section handles the case where we did not get the 1784 // window size we asked for. We should avoid this by getting a maximum size from 1785 // the window session beforehand. 1786 if (mWidth != frame.width() || mHeight != frame.height()) { 1787 mWidth = frame.width(); 1788 mHeight = frame.height(); 1789 } 1790 1791 if (mSurfaceHolder != null) { 1792 // The app owns the surface; tell it about what is going on. 1793 if (mSurface.isValid()) { 1794 // XXX .copyFrom() doesn't work! 1795 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1796 mSurfaceHolder.mSurface = mSurface; 1797 } 1798 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1799 mSurfaceHolder.mSurfaceLock.unlock(); 1800 if (mSurface.isValid()) { 1801 if (!hadSurface) { 1802 mSurfaceHolder.ungetCallbacks(); 1803 1804 mIsCreating = true; 1805 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1806 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1807 if (callbacks != null) { 1808 for (SurfaceHolder.Callback c : callbacks) { 1809 c.surfaceCreated(mSurfaceHolder); 1810 } 1811 } 1812 surfaceChanged = true; 1813 } 1814 if (surfaceChanged) { 1815 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1816 lp.format, mWidth, mHeight); 1817 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1818 if (callbacks != null) { 1819 for (SurfaceHolder.Callback c : callbacks) { 1820 c.surfaceChanged(mSurfaceHolder, lp.format, 1821 mWidth, mHeight); 1822 } 1823 } 1824 } 1825 mIsCreating = false; 1826 } else if (hadSurface) { 1827 mSurfaceHolder.ungetCallbacks(); 1828 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1829 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1830 if (callbacks != null) { 1831 for (SurfaceHolder.Callback c : callbacks) { 1832 c.surfaceDestroyed(mSurfaceHolder); 1833 } 1834 } 1835 mSurfaceHolder.mSurfaceLock.lock(); 1836 try { 1837 mSurfaceHolder.mSurface = new Surface(); 1838 } finally { 1839 mSurfaceHolder.mSurfaceLock.unlock(); 1840 } 1841 } 1842 } 1843 1844 final HardwareRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 1845 if (hardwareRenderer != null && hardwareRenderer.isEnabled()) { 1846 if (hwInitialized 1847 || mWidth != hardwareRenderer.getWidth() 1848 || mHeight != hardwareRenderer.getHeight()) { 1849 hardwareRenderer.setup(mWidth, mHeight, mAttachInfo, 1850 mWindowAttributes.surfaceInsets); 1851 } 1852 } 1853 1854 if (!mStopped || mReportNextDraw) { 1855 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1856 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1857 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1858 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1859 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1860 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1861 1862 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1863 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1864 + " mHeight=" + mHeight 1865 + " measuredHeight=" + host.getMeasuredHeight() 1866 + " coveredInsetsChanged=" + contentInsetsChanged); 1867 1868 // Ask host how big it wants to be 1869 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1870 1871 // Implementation of weights from WindowManager.LayoutParams 1872 // We just grow the dimensions as needed and re-measure if 1873 // needs be 1874 int width = host.getMeasuredWidth(); 1875 int height = host.getMeasuredHeight(); 1876 boolean measureAgain = false; 1877 1878 if (lp.horizontalWeight > 0.0f) { 1879 width += (int) ((mWidth - width) * lp.horizontalWeight); 1880 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1881 MeasureSpec.EXACTLY); 1882 measureAgain = true; 1883 } 1884 if (lp.verticalWeight > 0.0f) { 1885 height += (int) ((mHeight - height) * lp.verticalWeight); 1886 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1887 MeasureSpec.EXACTLY); 1888 measureAgain = true; 1889 } 1890 1891 if (measureAgain) { 1892 if (DEBUG_LAYOUT) Log.v(TAG, 1893 "And hey let's measure once more: width=" + width 1894 + " height=" + height); 1895 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1896 } 1897 1898 layoutRequested = true; 1899 } 1900 } 1901 } else { 1902 // Not the first pass and no window/insets/visibility change but the window 1903 // may have moved and we need check that and if so to update the left and right 1904 // in the attach info. We translate only the window frame since on window move 1905 // the window manager tells us only for the new frame but the insets are the 1906 // same and we do not want to translate them more than once. 1907 1908 // TODO: Well, we are checking whether the frame has changed similarly 1909 // to how this is done for the insets. This is however incorrect since 1910 // the insets and the frame are translated. For example, the old frame 1911 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1912 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1913 // true since we are comparing a not translated value to a translated one. 1914 // This scenario is rare but we may want to fix that. 1915 1916 final boolean windowMoved = (mAttachInfo.mWindowLeft != frame.left 1917 || mAttachInfo.mWindowTop != frame.top); 1918 if (windowMoved) { 1919 if (mTranslator != null) { 1920 mTranslator.translateRectInScreenToAppWinFrame(frame); 1921 } 1922 mAttachInfo.mWindowLeft = frame.left; 1923 mAttachInfo.mWindowTop = frame.top; 1924 1925 // Update the light position for the new window offsets. 1926 if (mAttachInfo.mHardwareRenderer != null) { 1927 mAttachInfo.mHardwareRenderer.setLightCenter(mAttachInfo); 1928 } 1929 } 1930 } 1931 1932 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 1933 boolean triggerGlobalLayoutListener = didLayout 1934 || mAttachInfo.mRecomputeGlobalAttributes; 1935 if (didLayout) { 1936 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1937 1938 // By this point all views have been sized and positioned 1939 // We can compute the transparent area 1940 1941 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1942 // start out transparent 1943 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1944 host.getLocationInWindow(mTmpLocation); 1945 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1946 mTmpLocation[0] + host.mRight - host.mLeft, 1947 mTmpLocation[1] + host.mBottom - host.mTop); 1948 1949 host.gatherTransparentRegion(mTransparentRegion); 1950 if (mTranslator != null) { 1951 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1952 } 1953 1954 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1955 mPreviousTransparentRegion.set(mTransparentRegion); 1956 mFullRedrawNeeded = true; 1957 // reconfigure window manager 1958 try { 1959 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1960 } catch (RemoteException e) { 1961 } 1962 } 1963 } 1964 1965 if (DBG) { 1966 System.out.println("======================================"); 1967 System.out.println("performTraversals -- after setFrame"); 1968 host.debug(); 1969 } 1970 } 1971 1972 if (triggerGlobalLayoutListener) { 1973 mAttachInfo.mRecomputeGlobalAttributes = false; 1974 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1975 } 1976 1977 if (computesInternalInsets) { 1978 // Clear the original insets. 1979 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 1980 insets.reset(); 1981 1982 // Compute new insets in place. 1983 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1984 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1985 1986 // Tell the window manager. 1987 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1988 mLastGivenInsets.set(insets); 1989 1990 // Translate insets to screen coordinates if needed. 1991 final Rect contentInsets; 1992 final Rect visibleInsets; 1993 final Region touchableRegion; 1994 if (mTranslator != null) { 1995 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1996 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1997 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1998 } else { 1999 contentInsets = insets.contentInsets; 2000 visibleInsets = insets.visibleInsets; 2001 touchableRegion = insets.touchableRegion; 2002 } 2003 2004 try { 2005 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 2006 contentInsets, visibleInsets, touchableRegion); 2007 } catch (RemoteException e) { 2008 } 2009 } 2010 } 2011 2012 if (mFirst) { 2013 // handle first focus request 2014 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 2015 + mView.hasFocus()); 2016 if (mView != null) { 2017 if (!mView.hasFocus()) { 2018 mView.requestFocus(View.FOCUS_FORWARD); 2019 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 2020 + mView.findFocus()); 2021 } else { 2022 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 2023 + mView.findFocus()); 2024 } 2025 } 2026 } 2027 2028 final boolean changedVisibility = (viewVisibilityChanged || mFirst) && isViewVisible; 2029 final boolean hasWindowFocus = mAttachInfo.mHasWindowFocus && isViewVisible; 2030 final boolean regainedFocus = hasWindowFocus && mLostWindowFocus; 2031 if (regainedFocus) { 2032 mLostWindowFocus = false; 2033 } else if (!hasWindowFocus && mHadWindowFocus) { 2034 mLostWindowFocus = true; 2035 } 2036 2037 if (changedVisibility || regainedFocus) { 2038 host.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2039 } 2040 2041 mFirst = false; 2042 mWillDrawSoon = false; 2043 mNewSurfaceNeeded = false; 2044 mViewVisibility = viewVisibility; 2045 mHadWindowFocus = hasWindowFocus; 2046 2047 if (hasWindowFocus && !isInLocalFocusMode()) { 2048 final boolean imTarget = WindowManager.LayoutParams 2049 .mayUseInputMethod(mWindowAttributes.flags); 2050 if (imTarget != mLastWasImTarget) { 2051 mLastWasImTarget = imTarget; 2052 InputMethodManager imm = InputMethodManager.peekInstance(); 2053 if (imm != null && imTarget) { 2054 imm.onPreWindowFocus(mView, hasWindowFocus); 2055 imm.onPostWindowFocus(mView, mView.findFocus(), 2056 mWindowAttributes.softInputMode, 2057 !mHasHadWindowFocus, mWindowAttributes.flags); 2058 } 2059 } 2060 } 2061 2062 // Remember if we must report the next draw. 2063 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 2064 mReportNextDraw = true; 2065 } 2066 2067 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || !isViewVisible; 2068 2069 if (!cancelDraw && !newSurface) { 2070 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2071 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2072 mPendingTransitions.get(i).startChangingAnimations(); 2073 } 2074 mPendingTransitions.clear(); 2075 } 2076 2077 performDraw(); 2078 } else { 2079 if (isViewVisible) { 2080 // Try again 2081 scheduleTraversals(); 2082 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2083 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2084 mPendingTransitions.get(i).endChangingAnimations(); 2085 } 2086 mPendingTransitions.clear(); 2087 } 2088 } 2089 2090 mIsInTraversal = false; 2091 } 2092 2093 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2094 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 2095 try { 2096 if (!mWindowSession.outOfMemory(mWindow) && 2097 Process.myUid() != Process.SYSTEM_UID) { 2098 Slog.w(TAG, "No processes killed for memory; killing self"); 2099 Process.killProcess(Process.myPid()); 2100 } 2101 } catch (RemoteException ex) { 2102 } 2103 mLayoutRequested = true; // ask wm for a new surface next time. 2104 } 2105 2106 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2107 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2108 try { 2109 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2110 } finally { 2111 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2112 } 2113 } 2114 2115 /** 2116 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2117 * is currently undergoing a layout pass. 2118 * 2119 * @return whether the view hierarchy is currently undergoing a layout pass 2120 */ 2121 boolean isInLayout() { 2122 return mInLayout; 2123 } 2124 2125 /** 2126 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2127 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2128 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2129 * all children in that container hierarchy are measured and laid out at the end of the layout 2130 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2131 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2132 * we check all of those views to see if any still have pending layout requests, which 2133 * indicates that they were not correctly handled by their container hierarchy. If that is 2134 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2135 * to blank containers, and force a second request/measure/layout pass in this frame. If 2136 * more requestLayout() calls are received during that second layout pass, we post those 2137 * requests to the next frame to avoid possible infinite loops. 2138 * 2139 * <p>The return value from this method indicates whether the request should proceed 2140 * (if it is a request during the first layout pass) or should be skipped and posted to the 2141 * next frame (if it is a request during the second layout pass).</p> 2142 * 2143 * @param view the view that requested the layout. 2144 * 2145 * @return true if request should proceed, false otherwise. 2146 */ 2147 boolean requestLayoutDuringLayout(final View view) { 2148 if (view.mParent == null || view.mAttachInfo == null) { 2149 // Would not normally trigger another layout, so just let it pass through as usual 2150 return true; 2151 } 2152 if (!mLayoutRequesters.contains(view)) { 2153 mLayoutRequesters.add(view); 2154 } 2155 if (!mHandlingLayoutInLayoutRequest) { 2156 // Let the request proceed normally; it will be processed in a second layout pass 2157 // if necessary 2158 return true; 2159 } else { 2160 // Don't let the request proceed during the second layout pass. 2161 // It will post to the next frame instead. 2162 return false; 2163 } 2164 } 2165 2166 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2167 int desiredWindowHeight) { 2168 mLayoutRequested = false; 2169 mScrollMayChange = true; 2170 mInLayout = true; 2171 2172 final View host = mView; 2173 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2174 Log.v(TAG, "Laying out " + host + " to (" + 2175 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2176 } 2177 2178 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2179 try { 2180 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2181 2182 mInLayout = false; 2183 int numViewsRequestingLayout = mLayoutRequesters.size(); 2184 if (numViewsRequestingLayout > 0) { 2185 // requestLayout() was called during layout. 2186 // If no layout-request flags are set on the requesting views, there is no problem. 2187 // If some requests are still pending, then we need to clear those flags and do 2188 // a full request/measure/layout pass to handle this situation. 2189 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2190 false); 2191 if (validLayoutRequesters != null) { 2192 // Set this flag to indicate that any further requests are happening during 2193 // the second pass, which may result in posting those requests to the next 2194 // frame instead 2195 mHandlingLayoutInLayoutRequest = true; 2196 2197 // Process fresh layout requests, then measure and layout 2198 int numValidRequests = validLayoutRequesters.size(); 2199 for (int i = 0; i < numValidRequests; ++i) { 2200 final View view = validLayoutRequesters.get(i); 2201 Log.w("View", "requestLayout() improperly called by " + view + 2202 " during layout: running second layout pass"); 2203 view.requestLayout(); 2204 } 2205 measureHierarchy(host, lp, mView.getContext().getResources(), 2206 desiredWindowWidth, desiredWindowHeight); 2207 mInLayout = true; 2208 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2209 2210 mHandlingLayoutInLayoutRequest = false; 2211 2212 // Check the valid requests again, this time without checking/clearing the 2213 // layout flags, since requests happening during the second pass get noop'd 2214 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2215 if (validLayoutRequesters != null) { 2216 final ArrayList<View> finalRequesters = validLayoutRequesters; 2217 // Post second-pass requests to the next frame 2218 getRunQueue().post(new Runnable() { 2219 @Override 2220 public void run() { 2221 int numValidRequests = finalRequesters.size(); 2222 for (int i = 0; i < numValidRequests; ++i) { 2223 final View view = finalRequesters.get(i); 2224 Log.w("View", "requestLayout() improperly called by " + view + 2225 " during second layout pass: posting in next frame"); 2226 view.requestLayout(); 2227 } 2228 } 2229 }); 2230 } 2231 } 2232 2233 } 2234 } finally { 2235 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2236 } 2237 mInLayout = false; 2238 } 2239 2240 /** 2241 * This method is called during layout when there have been calls to requestLayout() during 2242 * layout. It walks through the list of views that requested layout to determine which ones 2243 * still need it, based on visibility in the hierarchy and whether they have already been 2244 * handled (as is usually the case with ListView children). 2245 * 2246 * @param layoutRequesters The list of views that requested layout during layout 2247 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2248 * If so, the FORCE_LAYOUT flag was not set on requesters. 2249 * @return A list of the actual views that still need to be laid out. 2250 */ 2251 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2252 boolean secondLayoutRequests) { 2253 2254 int numViewsRequestingLayout = layoutRequesters.size(); 2255 ArrayList<View> validLayoutRequesters = null; 2256 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2257 View view = layoutRequesters.get(i); 2258 if (view != null && view.mAttachInfo != null && view.mParent != null && 2259 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2260 View.PFLAG_FORCE_LAYOUT)) { 2261 boolean gone = false; 2262 View parent = view; 2263 // Only trigger new requests for views in a non-GONE hierarchy 2264 while (parent != null) { 2265 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2266 gone = true; 2267 break; 2268 } 2269 if (parent.mParent instanceof View) { 2270 parent = (View) parent.mParent; 2271 } else { 2272 parent = null; 2273 } 2274 } 2275 if (!gone) { 2276 if (validLayoutRequesters == null) { 2277 validLayoutRequesters = new ArrayList<View>(); 2278 } 2279 validLayoutRequesters.add(view); 2280 } 2281 } 2282 } 2283 if (!secondLayoutRequests) { 2284 // If we're checking the layout flags, then we need to clean them up also 2285 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2286 View view = layoutRequesters.get(i); 2287 while (view != null && 2288 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2289 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2290 if (view.mParent instanceof View) { 2291 view = (View) view.mParent; 2292 } else { 2293 view = null; 2294 } 2295 } 2296 } 2297 } 2298 layoutRequesters.clear(); 2299 return validLayoutRequesters; 2300 } 2301 2302 @Override 2303 public void requestTransparentRegion(View child) { 2304 // the test below should not fail unless someone is messing with us 2305 checkThread(); 2306 if (mView == child) { 2307 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2308 // Need to make sure we re-evaluate the window attributes next 2309 // time around, to ensure the window has the correct format. 2310 mWindowAttributesChanged = true; 2311 mWindowAttributesChangesFlag = 0; 2312 requestLayout(); 2313 } 2314 } 2315 2316 /** 2317 * Figures out the measure spec for the root view in a window based on it's 2318 * layout params. 2319 * 2320 * @param windowSize 2321 * The available width or height of the window 2322 * 2323 * @param rootDimension 2324 * The layout params for one dimension (width or height) of the 2325 * window. 2326 * 2327 * @return The measure spec to use to measure the root view. 2328 */ 2329 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2330 int measureSpec; 2331 switch (rootDimension) { 2332 2333 case ViewGroup.LayoutParams.MATCH_PARENT: 2334 // Window can't resize. Force root view to be windowSize. 2335 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2336 break; 2337 case ViewGroup.LayoutParams.WRAP_CONTENT: 2338 // Window can resize. Set max size for root view. 2339 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2340 break; 2341 default: 2342 // Window wants to be an exact size. Force root view to be that size. 2343 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2344 break; 2345 } 2346 return measureSpec; 2347 } 2348 2349 int mHardwareXOffset; 2350 int mHardwareYOffset; 2351 2352 @Override 2353 public void onHardwarePreDraw(DisplayListCanvas canvas) { 2354 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2355 } 2356 2357 @Override 2358 public void onHardwarePostDraw(DisplayListCanvas canvas) { 2359 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2360 } 2361 2362 /** 2363 * @hide 2364 */ 2365 void outputDisplayList(View view) { 2366 view.mRenderNode.output(); 2367 if (mAttachInfo.mHardwareRenderer != null) { 2368 ((ThreadedRenderer)mAttachInfo.mHardwareRenderer).serializeDisplayListTree(); 2369 } 2370 } 2371 2372 /** 2373 * @see #PROPERTY_PROFILE_RENDERING 2374 */ 2375 private void profileRendering(boolean enabled) { 2376 if (mProfileRendering) { 2377 mRenderProfilingEnabled = enabled; 2378 2379 if (mRenderProfiler != null) { 2380 mChoreographer.removeFrameCallback(mRenderProfiler); 2381 } 2382 if (mRenderProfilingEnabled) { 2383 if (mRenderProfiler == null) { 2384 mRenderProfiler = new Choreographer.FrameCallback() { 2385 @Override 2386 public void doFrame(long frameTimeNanos) { 2387 mDirty.set(0, 0, mWidth, mHeight); 2388 scheduleTraversals(); 2389 if (mRenderProfilingEnabled) { 2390 mChoreographer.postFrameCallback(mRenderProfiler); 2391 } 2392 } 2393 }; 2394 } 2395 mChoreographer.postFrameCallback(mRenderProfiler); 2396 } else { 2397 mRenderProfiler = null; 2398 } 2399 } 2400 } 2401 2402 /** 2403 * Called from draw() when DEBUG_FPS is enabled 2404 */ 2405 private void trackFPS() { 2406 // Tracks frames per second drawn. First value in a series of draws may be bogus 2407 // because it down not account for the intervening idle time 2408 long nowTime = System.currentTimeMillis(); 2409 if (mFpsStartTime < 0) { 2410 mFpsStartTime = mFpsPrevTime = nowTime; 2411 mFpsNumFrames = 0; 2412 } else { 2413 ++mFpsNumFrames; 2414 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2415 long frameTime = nowTime - mFpsPrevTime; 2416 long totalTime = nowTime - mFpsStartTime; 2417 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2418 mFpsPrevTime = nowTime; 2419 if (totalTime > 1000) { 2420 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2421 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2422 mFpsStartTime = nowTime; 2423 mFpsNumFrames = 0; 2424 } 2425 } 2426 } 2427 2428 private void performDraw() { 2429 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2430 return; 2431 } 2432 2433 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2434 mFullRedrawNeeded = false; 2435 2436 mIsDrawing = true; 2437 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2438 try { 2439 draw(fullRedrawNeeded); 2440 } finally { 2441 mIsDrawing = false; 2442 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2443 } 2444 2445 // For whatever reason we didn't create a HardwareRenderer, end any 2446 // hardware animations that are now dangling 2447 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2448 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2449 for (int i = 0; i < count; i++) { 2450 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2451 } 2452 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2453 } 2454 2455 if (mReportNextDraw) { 2456 mReportNextDraw = false; 2457 2458 // if we're using multi-thread renderer, wait for the window frame draws 2459 if (mWindowDrawCountDown != null) { 2460 try { 2461 mWindowDrawCountDown.await(); 2462 } catch (InterruptedException e) { 2463 Log.e(TAG, "Window redraw count down interruped!"); 2464 } 2465 mWindowDrawCountDown = null; 2466 } 2467 2468 if (mAttachInfo.mHardwareRenderer != null) { 2469 mAttachInfo.mHardwareRenderer.fence(); 2470 } 2471 2472 if (LOCAL_LOGV) { 2473 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2474 } 2475 if (mSurfaceHolder != null && mSurface.isValid()) { 2476 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2477 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2478 if (callbacks != null) { 2479 for (SurfaceHolder.Callback c : callbacks) { 2480 if (c instanceof SurfaceHolder.Callback2) { 2481 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded(mSurfaceHolder); 2482 } 2483 } 2484 } 2485 } 2486 try { 2487 mWindowSession.finishDrawing(mWindow); 2488 } catch (RemoteException e) { 2489 } 2490 } 2491 } 2492 2493 private void draw(boolean fullRedrawNeeded) { 2494 Surface surface = mSurface; 2495 if (!surface.isValid()) { 2496 return; 2497 } 2498 2499 if (DEBUG_FPS) { 2500 trackFPS(); 2501 } 2502 2503 if (!sFirstDrawComplete) { 2504 synchronized (sFirstDrawHandlers) { 2505 sFirstDrawComplete = true; 2506 final int count = sFirstDrawHandlers.size(); 2507 for (int i = 0; i< count; i++) { 2508 mHandler.post(sFirstDrawHandlers.get(i)); 2509 } 2510 } 2511 } 2512 2513 scrollToRectOrFocus(null, false); 2514 2515 if (mAttachInfo.mViewScrollChanged) { 2516 mAttachInfo.mViewScrollChanged = false; 2517 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2518 } 2519 2520 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2521 final int curScrollY; 2522 if (animating) { 2523 curScrollY = mScroller.getCurrY(); 2524 } else { 2525 curScrollY = mScrollY; 2526 } 2527 if (mCurScrollY != curScrollY) { 2528 mCurScrollY = curScrollY; 2529 fullRedrawNeeded = true; 2530 if (mView instanceof RootViewSurfaceTaker) { 2531 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2532 } 2533 } 2534 2535 final float appScale = mAttachInfo.mApplicationScale; 2536 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2537 2538 int resizeAlpha = 0; 2539 2540 final Rect dirty = mDirty; 2541 if (mSurfaceHolder != null) { 2542 // The app owns the surface, we won't draw. 2543 dirty.setEmpty(); 2544 if (animating && mScroller != null) { 2545 mScroller.abortAnimation(); 2546 } 2547 return; 2548 } 2549 2550 if (fullRedrawNeeded) { 2551 mAttachInfo.mIgnoreDirtyState = true; 2552 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2553 } 2554 2555 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2556 Log.v(TAG, "Draw " + mView + "/" 2557 + mWindowAttributes.getTitle() 2558 + ": dirty={" + dirty.left + "," + dirty.top 2559 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2560 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2561 appScale + ", width=" + mWidth + ", height=" + mHeight); 2562 } 2563 2564 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2565 2566 int xOffset = -mCanvasOffsetX; 2567 int yOffset = -mCanvasOffsetY + curScrollY; 2568 final WindowManager.LayoutParams params = mWindowAttributes; 2569 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2570 if (surfaceInsets != null) { 2571 xOffset -= surfaceInsets.left; 2572 yOffset -= surfaceInsets.top; 2573 2574 // Offset dirty rect for surface insets. 2575 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2576 } 2577 2578 boolean accessibilityFocusDirty = false; 2579 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2580 if (drawable != null) { 2581 final Rect bounds = mAttachInfo.mTmpInvalRect; 2582 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2583 if (!hasFocus) { 2584 bounds.setEmpty(); 2585 } 2586 if (!bounds.equals(drawable.getBounds())) { 2587 accessibilityFocusDirty = true; 2588 } 2589 } 2590 2591 mAttachInfo.mDrawingTime = 2592 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2593 2594 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2595 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2596 // If accessibility focus moved, always invalidate the root. 2597 boolean invalidateRoot = accessibilityFocusDirty; 2598 2599 // Draw with hardware renderer. 2600 mIsAnimating = false; 2601 2602 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2603 mHardwareYOffset = yOffset; 2604 mHardwareXOffset = xOffset; 2605 invalidateRoot = true; 2606 } 2607 2608 if (invalidateRoot) { 2609 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2610 } 2611 2612 dirty.setEmpty(); 2613 2614 // Stage the content drawn size now. It will be transferred to the renderer 2615 // shortly before the draw commands get send to the renderer. 2616 final boolean updated = updateContentDrawBounds(); 2617 2618 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2619 2620 if (updated) { 2621 requestDrawWindow(); 2622 } 2623 } else { 2624 // If we get here with a disabled & requested hardware renderer, something went 2625 // wrong (an invalidate posted right before we destroyed the hardware surface 2626 // for instance) so we should just bail out. Locking the surface with software 2627 // rendering at this point would lock it forever and prevent hardware renderer 2628 // from doing its job when it comes back. 2629 // Before we request a new frame we must however attempt to reinitiliaze the 2630 // hardware renderer if it's in requested state. This would happen after an 2631 // eglTerminate() for instance. 2632 if (mAttachInfo.mHardwareRenderer != null && 2633 !mAttachInfo.mHardwareRenderer.isEnabled() && 2634 mAttachInfo.mHardwareRenderer.isRequested()) { 2635 2636 try { 2637 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2638 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 2639 } catch (OutOfResourcesException e) { 2640 handleOutOfResourcesException(e); 2641 return; 2642 } 2643 2644 mFullRedrawNeeded = true; 2645 scheduleTraversals(); 2646 return; 2647 } 2648 2649 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2650 return; 2651 } 2652 } 2653 } 2654 2655 if (animating) { 2656 mFullRedrawNeeded = true; 2657 scheduleTraversals(); 2658 } 2659 } 2660 2661 /** 2662 * @return true if drawing was successful, false if an error occurred 2663 */ 2664 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2665 boolean scalingRequired, Rect dirty) { 2666 2667 // Draw with software renderer. 2668 final Canvas canvas; 2669 try { 2670 final int left = dirty.left; 2671 final int top = dirty.top; 2672 final int right = dirty.right; 2673 final int bottom = dirty.bottom; 2674 2675 canvas = mSurface.lockCanvas(dirty); 2676 2677 // The dirty rectangle can be modified by Surface.lockCanvas() 2678 //noinspection ConstantConditions 2679 if (left != dirty.left || top != dirty.top || right != dirty.right 2680 || bottom != dirty.bottom) { 2681 attachInfo.mIgnoreDirtyState = true; 2682 } 2683 2684 // TODO: Do this in native 2685 canvas.setDensity(mDensity); 2686 } catch (Surface.OutOfResourcesException e) { 2687 handleOutOfResourcesException(e); 2688 return false; 2689 } catch (IllegalArgumentException e) { 2690 Log.e(TAG, "Could not lock surface", e); 2691 // Don't assume this is due to out of memory, it could be 2692 // something else, and if it is something else then we could 2693 // kill stuff (or ourself) for no reason. 2694 mLayoutRequested = true; // ask wm for a new surface next time. 2695 return false; 2696 } 2697 2698 try { 2699 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2700 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2701 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2702 //canvas.drawARGB(255, 255, 0, 0); 2703 } 2704 2705 // If this bitmap's format includes an alpha channel, we 2706 // need to clear it before drawing so that the child will 2707 // properly re-composite its drawing on a transparent 2708 // background. This automatically respects the clip/dirty region 2709 // or 2710 // If we are applying an offset, we need to clear the area 2711 // where the offset doesn't appear to avoid having garbage 2712 // left in the blank areas. 2713 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2714 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2715 } 2716 2717 dirty.setEmpty(); 2718 mIsAnimating = false; 2719 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2720 2721 if (DEBUG_DRAW) { 2722 Context cxt = mView.getContext(); 2723 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2724 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2725 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2726 } 2727 try { 2728 canvas.translate(-xoff, -yoff); 2729 if (mTranslator != null) { 2730 mTranslator.translateCanvas(canvas); 2731 } 2732 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2733 attachInfo.mSetIgnoreDirtyState = false; 2734 2735 mView.draw(canvas); 2736 2737 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2738 } finally { 2739 if (!attachInfo.mSetIgnoreDirtyState) { 2740 // Only clear the flag if it was not set during the mView.draw() call 2741 attachInfo.mIgnoreDirtyState = false; 2742 } 2743 } 2744 } finally { 2745 try { 2746 surface.unlockCanvasAndPost(canvas); 2747 } catch (IllegalArgumentException e) { 2748 Log.e(TAG, "Could not unlock surface", e); 2749 mLayoutRequested = true; // ask wm for a new surface next time. 2750 //noinspection ReturnInsideFinallyBlock 2751 return false; 2752 } 2753 2754 if (LOCAL_LOGV) { 2755 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2756 } 2757 } 2758 return true; 2759 } 2760 2761 /** 2762 * We want to draw a highlight around the current accessibility focused. 2763 * Since adding a style for all possible view is not a viable option we 2764 * have this specialized drawing method. 2765 * 2766 * Note: We are doing this here to be able to draw the highlight for 2767 * virtual views in addition to real ones. 2768 * 2769 * @param canvas The canvas on which to draw. 2770 */ 2771 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2772 final Rect bounds = mAttachInfo.mTmpInvalRect; 2773 if (getAccessibilityFocusedRect(bounds)) { 2774 final Drawable drawable = getAccessibilityFocusedDrawable(); 2775 if (drawable != null) { 2776 drawable.setBounds(bounds); 2777 drawable.draw(canvas); 2778 } 2779 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2780 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2781 } 2782 } 2783 2784 private boolean getAccessibilityFocusedRect(Rect bounds) { 2785 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2786 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2787 return false; 2788 } 2789 2790 final View host = mAccessibilityFocusedHost; 2791 if (host == null || host.mAttachInfo == null) { 2792 return false; 2793 } 2794 2795 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2796 if (provider == null) { 2797 host.getBoundsOnScreen(bounds, true); 2798 } else if (mAccessibilityFocusedVirtualView != null) { 2799 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2800 } else { 2801 return false; 2802 } 2803 2804 // Transform the rect into window-relative coordinates. 2805 final AttachInfo attachInfo = mAttachInfo; 2806 bounds.offset(0, attachInfo.mViewRootImpl.mScrollY); 2807 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2808 if (!bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, 2809 attachInfo.mViewRootImpl.mHeight)) { 2810 // If no intersection, set bounds to empty. 2811 bounds.setEmpty(); 2812 } 2813 return !bounds.isEmpty(); 2814 } 2815 2816 private Drawable getAccessibilityFocusedDrawable() { 2817 // Lazily load the accessibility focus drawable. 2818 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2819 final TypedValue value = new TypedValue(); 2820 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2821 R.attr.accessibilityFocusedDrawable, value, true); 2822 if (resolved) { 2823 mAttachInfo.mAccessibilityFocusDrawable = 2824 mView.mContext.getDrawable(value.resourceId); 2825 } 2826 } 2827 return mAttachInfo.mAccessibilityFocusDrawable; 2828 } 2829 2830 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2831 final Rect ci = mAttachInfo.mContentInsets; 2832 final Rect vi = mAttachInfo.mVisibleInsets; 2833 int scrollY = 0; 2834 boolean handled = false; 2835 2836 if (vi.left > ci.left || vi.top > ci.top 2837 || vi.right > ci.right || vi.bottom > ci.bottom) { 2838 // We'll assume that we aren't going to change the scroll 2839 // offset, since we want to avoid that unless it is actually 2840 // going to make the focus visible... otherwise we scroll 2841 // all over the place. 2842 scrollY = mScrollY; 2843 // We can be called for two different situations: during a draw, 2844 // to update the scroll position if the focus has changed (in which 2845 // case 'rectangle' is null), or in response to a 2846 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2847 // is non-null and we just want to scroll to whatever that 2848 // rectangle is). 2849 final View focus = mView.findFocus(); 2850 if (focus == null) { 2851 return false; 2852 } 2853 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2854 if (focus != lastScrolledFocus) { 2855 // If the focus has changed, then ignore any requests to scroll 2856 // to a rectangle; first we want to make sure the entire focus 2857 // view is visible. 2858 rectangle = null; 2859 } 2860 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2861 + " rectangle=" + rectangle + " ci=" + ci 2862 + " vi=" + vi); 2863 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2864 // Optimization: if the focus hasn't changed since last 2865 // time, and no layout has happened, then just leave things 2866 // as they are. 2867 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2868 + mScrollY + " vi=" + vi.toShortString()); 2869 } else { 2870 // We need to determine if the currently focused view is 2871 // within the visible part of the window and, if not, apply 2872 // a pan so it can be seen. 2873 mLastScrolledFocus = new WeakReference<View>(focus); 2874 mScrollMayChange = false; 2875 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2876 // Try to find the rectangle from the focus view. 2877 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2878 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2879 + mView.getWidth() + " h=" + mView.getHeight() 2880 + " ci=" + ci.toShortString() 2881 + " vi=" + vi.toShortString()); 2882 if (rectangle == null) { 2883 focus.getFocusedRect(mTempRect); 2884 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2885 + ": focusRect=" + mTempRect.toShortString()); 2886 if (mView instanceof ViewGroup) { 2887 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2888 focus, mTempRect); 2889 } 2890 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2891 "Focus in window: focusRect=" 2892 + mTempRect.toShortString() 2893 + " visRect=" + mVisRect.toShortString()); 2894 } else { 2895 mTempRect.set(rectangle); 2896 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2897 "Request scroll to rect: " 2898 + mTempRect.toShortString() 2899 + " visRect=" + mVisRect.toShortString()); 2900 } 2901 if (mTempRect.intersect(mVisRect)) { 2902 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2903 "Focus window visible rect: " 2904 + mTempRect.toShortString()); 2905 if (mTempRect.height() > 2906 (mView.getHeight()-vi.top-vi.bottom)) { 2907 // If the focus simply is not going to fit, then 2908 // best is probably just to leave things as-is. 2909 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2910 "Too tall; leaving scrollY=" + scrollY); 2911 } else if ((mTempRect.top-scrollY) < vi.top) { 2912 scrollY -= vi.top - (mTempRect.top-scrollY); 2913 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2914 "Top covered; scrollY=" + scrollY); 2915 } else if ((mTempRect.bottom-scrollY) 2916 > (mView.getHeight()-vi.bottom)) { 2917 scrollY += (mTempRect.bottom-scrollY) 2918 - (mView.getHeight()-vi.bottom); 2919 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2920 "Bottom covered; scrollY=" + scrollY); 2921 } 2922 handled = true; 2923 } 2924 } 2925 } 2926 } 2927 2928 if (scrollY != mScrollY) { 2929 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2930 + mScrollY + " , new=" + scrollY); 2931 if (!immediate) { 2932 if (mScroller == null) { 2933 mScroller = new Scroller(mView.getContext()); 2934 } 2935 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2936 } else if (mScroller != null) { 2937 mScroller.abortAnimation(); 2938 } 2939 mScrollY = scrollY; 2940 } 2941 2942 return handled; 2943 } 2944 2945 /** 2946 * @hide 2947 */ 2948 public View getAccessibilityFocusedHost() { 2949 return mAccessibilityFocusedHost; 2950 } 2951 2952 /** 2953 * @hide 2954 */ 2955 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2956 return mAccessibilityFocusedVirtualView; 2957 } 2958 2959 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2960 // If we have a virtual view with accessibility focus we need 2961 // to clear the focus and invalidate the virtual view bounds. 2962 if (mAccessibilityFocusedVirtualView != null) { 2963 2964 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2965 View focusHost = mAccessibilityFocusedHost; 2966 2967 // Wipe the state of the current accessibility focus since 2968 // the call into the provider to clear accessibility focus 2969 // will fire an accessibility event which will end up calling 2970 // this method and we want to have clean state when this 2971 // invocation happens. 2972 mAccessibilityFocusedHost = null; 2973 mAccessibilityFocusedVirtualView = null; 2974 2975 // Clear accessibility focus on the host after clearing state since 2976 // this method may be reentrant. 2977 focusHost.clearAccessibilityFocusNoCallbacks(); 2978 2979 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2980 if (provider != null) { 2981 // Invalidate the area of the cleared accessibility focus. 2982 focusNode.getBoundsInParent(mTempRect); 2983 focusHost.invalidate(mTempRect); 2984 // Clear accessibility focus in the virtual node. 2985 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2986 focusNode.getSourceNodeId()); 2987 provider.performAction(virtualNodeId, 2988 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2989 } 2990 focusNode.recycle(); 2991 } 2992 if (mAccessibilityFocusedHost != null) { 2993 // Clear accessibility focus in the view. 2994 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2995 } 2996 2997 // Set the new focus host and node. 2998 mAccessibilityFocusedHost = view; 2999 mAccessibilityFocusedVirtualView = node; 3000 3001 if (mAttachInfo.mHardwareRenderer != null) { 3002 mAttachInfo.mHardwareRenderer.invalidateRoot(); 3003 } 3004 } 3005 3006 @Override 3007 public void requestChildFocus(View child, View focused) { 3008 if (DEBUG_INPUT_RESIZE) { 3009 Log.v(TAG, "Request child focus: focus now " + focused); 3010 } 3011 checkThread(); 3012 scheduleTraversals(); 3013 } 3014 3015 @Override 3016 public void clearChildFocus(View child) { 3017 if (DEBUG_INPUT_RESIZE) { 3018 Log.v(TAG, "Clearing child focus"); 3019 } 3020 checkThread(); 3021 scheduleTraversals(); 3022 } 3023 3024 @Override 3025 public ViewParent getParentForAccessibility() { 3026 return null; 3027 } 3028 3029 @Override 3030 public void focusableViewAvailable(View v) { 3031 checkThread(); 3032 if (mView != null) { 3033 if (!mView.hasFocus()) { 3034 v.requestFocus(); 3035 } else { 3036 // the one case where will transfer focus away from the current one 3037 // is if the current view is a view group that prefers to give focus 3038 // to its children first AND the view is a descendant of it. 3039 View focused = mView.findFocus(); 3040 if (focused instanceof ViewGroup) { 3041 ViewGroup group = (ViewGroup) focused; 3042 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3043 && isViewDescendantOf(v, focused)) { 3044 v.requestFocus(); 3045 } 3046 } 3047 } 3048 } 3049 } 3050 3051 @Override 3052 public void recomputeViewAttributes(View child) { 3053 checkThread(); 3054 if (mView == child) { 3055 mAttachInfo.mRecomputeGlobalAttributes = true; 3056 if (!mWillDrawSoon) { 3057 scheduleTraversals(); 3058 } 3059 } 3060 } 3061 3062 void dispatchDetachedFromWindow() { 3063 if (mView != null && mView.mAttachInfo != null) { 3064 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 3065 mView.dispatchDetachedFromWindow(); 3066 } 3067 3068 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 3069 mAccessibilityManager.removeAccessibilityStateChangeListener( 3070 mAccessibilityInteractionConnectionManager); 3071 mAccessibilityManager.removeHighTextContrastStateChangeListener( 3072 mHighContrastTextManager); 3073 removeSendWindowContentChangedCallback(); 3074 3075 destroyHardwareRenderer(); 3076 3077 setAccessibilityFocus(null, null); 3078 3079 mView.assignParent(null); 3080 mView = null; 3081 mAttachInfo.mRootView = null; 3082 3083 mSurface.release(); 3084 3085 if (mInputQueueCallback != null && mInputQueue != null) { 3086 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 3087 mInputQueue.dispose(); 3088 mInputQueueCallback = null; 3089 mInputQueue = null; 3090 } 3091 if (mInputEventReceiver != null) { 3092 mInputEventReceiver.dispose(); 3093 mInputEventReceiver = null; 3094 } 3095 try { 3096 mWindowSession.remove(mWindow); 3097 } catch (RemoteException e) { 3098 } 3099 3100 // Dispose the input channel after removing the window so the Window Manager 3101 // doesn't interpret the input channel being closed as an abnormal termination. 3102 if (mInputChannel != null) { 3103 mInputChannel.dispose(); 3104 mInputChannel = null; 3105 } 3106 3107 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3108 3109 unscheduleTraversals(); 3110 } 3111 3112 void updateConfiguration(Configuration config, boolean force) { 3113 if (DEBUG_CONFIGURATION) Log.v(TAG, 3114 "Applying new config to window " 3115 + mWindowAttributes.getTitle() 3116 + ": " + config); 3117 3118 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3119 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3120 config = new Configuration(config); 3121 ci.applyToConfiguration(mNoncompatDensity, config); 3122 } 3123 3124 synchronized (sConfigCallbacks) { 3125 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3126 sConfigCallbacks.get(i).onConfigurationChanged(config); 3127 } 3128 } 3129 if (mView != null) { 3130 // At this point the resources have been updated to 3131 // have the most recent config, whatever that is. Use 3132 // the one in them which may be newer. 3133 config = mView.getResources().getConfiguration(); 3134 if (force || mLastConfiguration.diff(config) != 0) { 3135 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3136 final int currentLayoutDirection = config.getLayoutDirection(); 3137 mLastConfiguration.setTo(config); 3138 if (lastLayoutDirection != currentLayoutDirection && 3139 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3140 mView.setLayoutDirection(currentLayoutDirection); 3141 } 3142 mView.dispatchConfigurationChanged(config); 3143 } 3144 } 3145 } 3146 3147 /** 3148 * Return true if child is an ancestor of parent, (or equal to the parent). 3149 */ 3150 public static boolean isViewDescendantOf(View child, View parent) { 3151 if (child == parent) { 3152 return true; 3153 } 3154 3155 final ViewParent theParent = child.getParent(); 3156 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3157 } 3158 3159 private static void forceLayout(View view) { 3160 view.forceLayout(); 3161 if (view instanceof ViewGroup) { 3162 ViewGroup group = (ViewGroup) view; 3163 final int count = group.getChildCount(); 3164 for (int i = 0; i < count; i++) { 3165 forceLayout(group.getChildAt(i)); 3166 } 3167 } 3168 } 3169 3170 private final static int MSG_INVALIDATE = 1; 3171 private final static int MSG_INVALIDATE_RECT = 2; 3172 private final static int MSG_DIE = 3; 3173 private final static int MSG_RESIZED = 4; 3174 private final static int MSG_RESIZED_REPORT = 5; 3175 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3176 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3177 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3178 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3179 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3180 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 3181 private final static int MSG_CHECK_FOCUS = 13; 3182 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3183 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3184 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3185 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3186 private final static int MSG_UPDATE_CONFIGURATION = 18; 3187 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3188 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3189 private final static int MSG_INVALIDATE_WORLD = 22; 3190 private final static int MSG_WINDOW_MOVED = 23; 3191 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 24; 3192 private final static int MSG_DISPATCH_WINDOW_SHOWN = 25; 3193 3194 final class ViewRootHandler extends Handler { 3195 @Override 3196 public String getMessageName(Message message) { 3197 switch (message.what) { 3198 case MSG_INVALIDATE: 3199 return "MSG_INVALIDATE"; 3200 case MSG_INVALIDATE_RECT: 3201 return "MSG_INVALIDATE_RECT"; 3202 case MSG_DIE: 3203 return "MSG_DIE"; 3204 case MSG_RESIZED: 3205 return "MSG_RESIZED"; 3206 case MSG_RESIZED_REPORT: 3207 return "MSG_RESIZED_REPORT"; 3208 case MSG_WINDOW_FOCUS_CHANGED: 3209 return "MSG_WINDOW_FOCUS_CHANGED"; 3210 case MSG_DISPATCH_INPUT_EVENT: 3211 return "MSG_DISPATCH_INPUT_EVENT"; 3212 case MSG_DISPATCH_APP_VISIBILITY: 3213 return "MSG_DISPATCH_APP_VISIBILITY"; 3214 case MSG_DISPATCH_GET_NEW_SURFACE: 3215 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3216 case MSG_DISPATCH_KEY_FROM_IME: 3217 return "MSG_DISPATCH_KEY_FROM_IME"; 3218 case MSG_FINISH_INPUT_CONNECTION: 3219 return "MSG_FINISH_INPUT_CONNECTION"; 3220 case MSG_CHECK_FOCUS: 3221 return "MSG_CHECK_FOCUS"; 3222 case MSG_CLOSE_SYSTEM_DIALOGS: 3223 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3224 case MSG_DISPATCH_DRAG_EVENT: 3225 return "MSG_DISPATCH_DRAG_EVENT"; 3226 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3227 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3228 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3229 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3230 case MSG_UPDATE_CONFIGURATION: 3231 return "MSG_UPDATE_CONFIGURATION"; 3232 case MSG_PROCESS_INPUT_EVENTS: 3233 return "MSG_PROCESS_INPUT_EVENTS"; 3234 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3235 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3236 case MSG_WINDOW_MOVED: 3237 return "MSG_WINDOW_MOVED"; 3238 case MSG_SYNTHESIZE_INPUT_EVENT: 3239 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3240 case MSG_DISPATCH_WINDOW_SHOWN: 3241 return "MSG_DISPATCH_WINDOW_SHOWN"; 3242 } 3243 return super.getMessageName(message); 3244 } 3245 3246 @Override 3247 public void handleMessage(Message msg) { 3248 switch (msg.what) { 3249 case MSG_INVALIDATE: 3250 ((View) msg.obj).invalidate(); 3251 break; 3252 case MSG_INVALIDATE_RECT: 3253 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3254 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3255 info.recycle(); 3256 break; 3257 case MSG_PROCESS_INPUT_EVENTS: 3258 mProcessInputEventsScheduled = false; 3259 doProcessInputEvents(); 3260 break; 3261 case MSG_DISPATCH_APP_VISIBILITY: 3262 handleAppVisibility(msg.arg1 != 0); 3263 break; 3264 case MSG_DISPATCH_GET_NEW_SURFACE: 3265 handleGetNewSurface(); 3266 break; 3267 case MSG_RESIZED: { 3268 // Recycled in the fall through... 3269 SomeArgs args = (SomeArgs) msg.obj; 3270 if (mWinFrame.equals(args.arg1) 3271 && mPendingOverscanInsets.equals(args.arg5) 3272 && mPendingContentInsets.equals(args.arg2) 3273 && mPendingStableInsets.equals(args.arg6) 3274 && mPendingVisibleInsets.equals(args.arg3) 3275 && mPendingOutsets.equals(args.arg7) 3276 && args.arg4 == null) { 3277 break; 3278 } 3279 } // fall through... 3280 case MSG_RESIZED_REPORT: 3281 if (mAdded) { 3282 SomeArgs args = (SomeArgs) msg.obj; 3283 3284 Configuration config = (Configuration) args.arg4; 3285 if (config != null) { 3286 updateConfiguration(config, false); 3287 } 3288 3289 mWinFrame.set((Rect) args.arg1); 3290 mPendingOverscanInsets.set((Rect) args.arg5); 3291 mPendingContentInsets.set((Rect) args.arg2); 3292 mPendingStableInsets.set((Rect) args.arg6); 3293 mPendingVisibleInsets.set((Rect) args.arg3); 3294 mPendingOutsets.set((Rect) args.arg7); 3295 mPendingBackDropFrame.set((Rect) args.arg8); 3296 3297 args.recycle(); 3298 3299 if (msg.what == MSG_RESIZED_REPORT) { 3300 mReportNextDraw = true; 3301 } 3302 3303 if (mView != null) { 3304 forceLayout(mView); 3305 } 3306 3307 requestLayout(); 3308 } 3309 break; 3310 case MSG_WINDOW_MOVED: 3311 if (mAdded) { 3312 final int w = mWinFrame.width(); 3313 final int h = mWinFrame.height(); 3314 final int l = msg.arg1; 3315 final int t = msg.arg2; 3316 mWinFrame.left = l; 3317 mWinFrame.right = l + w; 3318 mWinFrame.top = t; 3319 mWinFrame.bottom = t + h; 3320 3321 mPendingBackDropFrame.set(mWinFrame); 3322 3323 if (mView != null) { 3324 forceLayout(mView); 3325 } 3326 requestLayout(); 3327 } 3328 break; 3329 case MSG_WINDOW_FOCUS_CHANGED: { 3330 if (mAdded) { 3331 boolean hasWindowFocus = msg.arg1 != 0; 3332 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3333 3334 profileRendering(hasWindowFocus); 3335 3336 if (hasWindowFocus) { 3337 boolean inTouchMode = msg.arg2 != 0; 3338 ensureTouchModeLocally(inTouchMode); 3339 3340 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3341 mFullRedrawNeeded = true; 3342 try { 3343 final WindowManager.LayoutParams lp = mWindowAttributes; 3344 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3345 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3346 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 3347 } catch (OutOfResourcesException e) { 3348 Log.e(TAG, "OutOfResourcesException locking surface", e); 3349 try { 3350 if (!mWindowSession.outOfMemory(mWindow)) { 3351 Slog.w(TAG, "No processes killed for memory; killing self"); 3352 Process.killProcess(Process.myPid()); 3353 } 3354 } catch (RemoteException ex) { 3355 } 3356 // Retry in a bit. 3357 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3358 return; 3359 } 3360 } 3361 } 3362 3363 mLastWasImTarget = WindowManager.LayoutParams 3364 .mayUseInputMethod(mWindowAttributes.flags); 3365 3366 InputMethodManager imm = InputMethodManager.peekInstance(); 3367 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3368 imm.onPreWindowFocus(mView, hasWindowFocus); 3369 } 3370 if (mView != null) { 3371 mAttachInfo.mKeyDispatchState.reset(); 3372 mView.dispatchWindowFocusChanged(hasWindowFocus); 3373 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3374 } 3375 3376 // Note: must be done after the focus change callbacks, 3377 // so all of the view state is set up correctly. 3378 if (hasWindowFocus) { 3379 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3380 imm.onPostWindowFocus(mView, mView.findFocus(), 3381 mWindowAttributes.softInputMode, 3382 !mHasHadWindowFocus, mWindowAttributes.flags); 3383 } 3384 // Clear the forward bit. We can just do this directly, since 3385 // the window manager doesn't care about it. 3386 mWindowAttributes.softInputMode &= 3387 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3388 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3389 .softInputMode &= 3390 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3391 mHasHadWindowFocus = true; 3392 } 3393 } 3394 } break; 3395 case MSG_DIE: 3396 doDie(); 3397 break; 3398 case MSG_DISPATCH_INPUT_EVENT: { 3399 SomeArgs args = (SomeArgs)msg.obj; 3400 InputEvent event = (InputEvent)args.arg1; 3401 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3402 enqueueInputEvent(event, receiver, 0, true); 3403 args.recycle(); 3404 } break; 3405 case MSG_SYNTHESIZE_INPUT_EVENT: { 3406 InputEvent event = (InputEvent)msg.obj; 3407 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3408 } break; 3409 case MSG_DISPATCH_KEY_FROM_IME: { 3410 if (LOCAL_LOGV) Log.v( 3411 TAG, "Dispatching key " 3412 + msg.obj + " from IME to " + mView); 3413 KeyEvent event = (KeyEvent)msg.obj; 3414 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3415 // The IME is trying to say this event is from the 3416 // system! Bad bad bad! 3417 //noinspection UnusedAssignment 3418 event = KeyEvent.changeFlags(event, event.getFlags() & 3419 ~KeyEvent.FLAG_FROM_SYSTEM); 3420 } 3421 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3422 } break; 3423 case MSG_FINISH_INPUT_CONNECTION: { 3424 InputMethodManager imm = InputMethodManager.peekInstance(); 3425 if (imm != null) { 3426 imm.reportFinishInputConnection((InputConnection)msg.obj); 3427 } 3428 } break; 3429 case MSG_CHECK_FOCUS: { 3430 InputMethodManager imm = InputMethodManager.peekInstance(); 3431 if (imm != null) { 3432 imm.checkFocus(); 3433 } 3434 } break; 3435 case MSG_CLOSE_SYSTEM_DIALOGS: { 3436 if (mView != null) { 3437 mView.onCloseSystemDialogs((String)msg.obj); 3438 } 3439 } break; 3440 case MSG_DISPATCH_DRAG_EVENT: 3441 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3442 DragEvent event = (DragEvent)msg.obj; 3443 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3444 handleDragEvent(event); 3445 } break; 3446 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3447 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3448 } break; 3449 case MSG_UPDATE_CONFIGURATION: { 3450 Configuration config = (Configuration)msg.obj; 3451 if (config.isOtherSeqNewer(mLastConfiguration)) { 3452 config = mLastConfiguration; 3453 } 3454 updateConfiguration(config, false); 3455 } break; 3456 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3457 setAccessibilityFocus(null, null); 3458 } break; 3459 case MSG_INVALIDATE_WORLD: { 3460 if (mView != null) { 3461 invalidateWorld(mView); 3462 } 3463 } break; 3464 case MSG_DISPATCH_WINDOW_SHOWN: { 3465 handleDispatchWindowShown(); 3466 } 3467 } 3468 } 3469 } 3470 3471 final ViewRootHandler mHandler = new ViewRootHandler(); 3472 3473 /** 3474 * Something in the current window tells us we need to change the touch mode. For 3475 * example, we are not in touch mode, and the user touches the screen. 3476 * 3477 * If the touch mode has changed, tell the window manager, and handle it locally. 3478 * 3479 * @param inTouchMode Whether we want to be in touch mode. 3480 * @return True if the touch mode changed and focus changed was changed as a result 3481 */ 3482 boolean ensureTouchMode(boolean inTouchMode) { 3483 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3484 + "touch mode is " + mAttachInfo.mInTouchMode); 3485 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3486 3487 // tell the window manager 3488 try { 3489 if (!isInLocalFocusMode()) { 3490 mWindowSession.setInTouchMode(inTouchMode); 3491 } 3492 } catch (RemoteException e) { 3493 throw new RuntimeException(e); 3494 } 3495 3496 // handle the change 3497 return ensureTouchModeLocally(inTouchMode); 3498 } 3499 3500 /** 3501 * Ensure that the touch mode for this window is set, and if it is changing, 3502 * take the appropriate action. 3503 * @param inTouchMode Whether we want to be in touch mode. 3504 * @return True if the touch mode changed and focus changed was changed as a result 3505 */ 3506 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3507 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3508 + "touch mode is " + mAttachInfo.mInTouchMode); 3509 3510 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3511 3512 mAttachInfo.mInTouchMode = inTouchMode; 3513 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3514 3515 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3516 } 3517 3518 private boolean enterTouchMode() { 3519 if (mView != null && mView.hasFocus()) { 3520 // note: not relying on mFocusedView here because this could 3521 // be when the window is first being added, and mFocused isn't 3522 // set yet. 3523 final View focused = mView.findFocus(); 3524 if (focused != null && !focused.isFocusableInTouchMode()) { 3525 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3526 if (ancestorToTakeFocus != null) { 3527 // there is an ancestor that wants focus after its 3528 // descendants that is focusable in touch mode.. give it 3529 // focus 3530 return ancestorToTakeFocus.requestFocus(); 3531 } else { 3532 // There's nothing to focus. Clear and propagate through the 3533 // hierarchy, but don't attempt to place new focus. 3534 focused.clearFocusInternal(null, true, false); 3535 return true; 3536 } 3537 } 3538 } 3539 return false; 3540 } 3541 3542 /** 3543 * Find an ancestor of focused that wants focus after its descendants and is 3544 * focusable in touch mode. 3545 * @param focused The currently focused view. 3546 * @return An appropriate view, or null if no such view exists. 3547 */ 3548 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3549 ViewParent parent = focused.getParent(); 3550 while (parent instanceof ViewGroup) { 3551 final ViewGroup vgParent = (ViewGroup) parent; 3552 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3553 && vgParent.isFocusableInTouchMode()) { 3554 return vgParent; 3555 } 3556 if (vgParent.isRootNamespace()) { 3557 return null; 3558 } else { 3559 parent = vgParent.getParent(); 3560 } 3561 } 3562 return null; 3563 } 3564 3565 private boolean leaveTouchMode() { 3566 if (mView != null) { 3567 if (mView.hasFocus()) { 3568 View focusedView = mView.findFocus(); 3569 if (!(focusedView instanceof ViewGroup)) { 3570 // some view has focus, let it keep it 3571 return false; 3572 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3573 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3574 // some view group has focus, and doesn't prefer its children 3575 // over itself for focus, so let them keep it. 3576 return false; 3577 } 3578 } 3579 3580 // find the best view to give focus to in this brave new non-touch-mode 3581 // world 3582 final View focused = focusSearch(null, View.FOCUS_DOWN); 3583 if (focused != null) { 3584 return focused.requestFocus(View.FOCUS_DOWN); 3585 } 3586 } 3587 return false; 3588 } 3589 3590 /** 3591 * Base class for implementing a stage in the chain of responsibility 3592 * for processing input events. 3593 * <p> 3594 * Events are delivered to the stage by the {@link #deliver} method. The stage 3595 * then has the choice of finishing the event or forwarding it to the next stage. 3596 * </p> 3597 */ 3598 abstract class InputStage { 3599 private final InputStage mNext; 3600 3601 protected static final int FORWARD = 0; 3602 protected static final int FINISH_HANDLED = 1; 3603 protected static final int FINISH_NOT_HANDLED = 2; 3604 3605 /** 3606 * Creates an input stage. 3607 * @param next The next stage to which events should be forwarded. 3608 */ 3609 public InputStage(InputStage next) { 3610 mNext = next; 3611 } 3612 3613 /** 3614 * Delivers an event to be processed. 3615 */ 3616 public final void deliver(QueuedInputEvent q) { 3617 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3618 forward(q); 3619 } else if (shouldDropInputEvent(q)) { 3620 finish(q, false); 3621 } else { 3622 apply(q, onProcess(q)); 3623 } 3624 } 3625 3626 /** 3627 * Marks the the input event as finished then forwards it to the next stage. 3628 */ 3629 protected void finish(QueuedInputEvent q, boolean handled) { 3630 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3631 if (handled) { 3632 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3633 } 3634 forward(q); 3635 } 3636 3637 /** 3638 * Forwards the event to the next stage. 3639 */ 3640 protected void forward(QueuedInputEvent q) { 3641 onDeliverToNext(q); 3642 } 3643 3644 /** 3645 * Applies a result code from {@link #onProcess} to the specified event. 3646 */ 3647 protected void apply(QueuedInputEvent q, int result) { 3648 if (result == FORWARD) { 3649 forward(q); 3650 } else if (result == FINISH_HANDLED) { 3651 finish(q, true); 3652 } else if (result == FINISH_NOT_HANDLED) { 3653 finish(q, false); 3654 } else { 3655 throw new IllegalArgumentException("Invalid result: " + result); 3656 } 3657 } 3658 3659 /** 3660 * Called when an event is ready to be processed. 3661 * @return A result code indicating how the event was handled. 3662 */ 3663 protected int onProcess(QueuedInputEvent q) { 3664 return FORWARD; 3665 } 3666 3667 /** 3668 * Called when an event is being delivered to the next stage. 3669 */ 3670 protected void onDeliverToNext(QueuedInputEvent q) { 3671 if (DEBUG_INPUT_STAGES) { 3672 Log.v(TAG, "Done with " + getClass().getSimpleName() + ". " + q); 3673 } 3674 if (mNext != null) { 3675 mNext.deliver(q); 3676 } else { 3677 finishInputEvent(q); 3678 } 3679 } 3680 3681 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3682 if (mView == null || !mAdded) { 3683 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3684 return true; 3685 } else if ((!mAttachInfo.mHasWindowFocus 3686 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) || mStopped 3687 || (mPausedForTransition && !isBack(q.mEvent))) { 3688 // This is a focus event and the window doesn't currently have input focus or 3689 // has stopped. This could be an event that came back from the previous stage 3690 // but the window has lost focus or stopped in the meantime. 3691 if (isTerminalInputEvent(q.mEvent)) { 3692 // Don't drop terminal input events, however mark them as canceled. 3693 q.mEvent.cancel(); 3694 Slog.w(TAG, "Cancelling event due to no window focus: " + q.mEvent); 3695 return false; 3696 } 3697 3698 // Drop non-terminal input events. 3699 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3700 return true; 3701 } 3702 return false; 3703 } 3704 3705 void dump(String prefix, PrintWriter writer) { 3706 if (mNext != null) { 3707 mNext.dump(prefix, writer); 3708 } 3709 } 3710 3711 private boolean isBack(InputEvent event) { 3712 if (event instanceof KeyEvent) { 3713 return ((KeyEvent) event).getKeyCode() == KeyEvent.KEYCODE_BACK; 3714 } else { 3715 return false; 3716 } 3717 } 3718 } 3719 3720 /** 3721 * Base class for implementing an input pipeline stage that supports 3722 * asynchronous and out-of-order processing of input events. 3723 * <p> 3724 * In addition to what a normal input stage can do, an asynchronous 3725 * input stage may also defer an input event that has been delivered to it 3726 * and finish or forward it later. 3727 * </p> 3728 */ 3729 abstract class AsyncInputStage extends InputStage { 3730 private final String mTraceCounter; 3731 3732 private QueuedInputEvent mQueueHead; 3733 private QueuedInputEvent mQueueTail; 3734 private int mQueueLength; 3735 3736 protected static final int DEFER = 3; 3737 3738 /** 3739 * Creates an asynchronous input stage. 3740 * @param next The next stage to which events should be forwarded. 3741 * @param traceCounter The name of a counter to record the size of 3742 * the queue of pending events. 3743 */ 3744 public AsyncInputStage(InputStage next, String traceCounter) { 3745 super(next); 3746 mTraceCounter = traceCounter; 3747 } 3748 3749 /** 3750 * Marks the event as deferred, which is to say that it will be handled 3751 * asynchronously. The caller is responsible for calling {@link #forward} 3752 * or {@link #finish} later when it is done handling the event. 3753 */ 3754 protected void defer(QueuedInputEvent q) { 3755 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3756 enqueue(q); 3757 } 3758 3759 @Override 3760 protected void forward(QueuedInputEvent q) { 3761 // Clear the deferred flag. 3762 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3763 3764 // Fast path if the queue is empty. 3765 QueuedInputEvent curr = mQueueHead; 3766 if (curr == null) { 3767 super.forward(q); 3768 return; 3769 } 3770 3771 // Determine whether the event must be serialized behind any others 3772 // before it can be delivered to the next stage. This is done because 3773 // deferred events might be handled out of order by the stage. 3774 final int deviceId = q.mEvent.getDeviceId(); 3775 QueuedInputEvent prev = null; 3776 boolean blocked = false; 3777 while (curr != null && curr != q) { 3778 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3779 blocked = true; 3780 } 3781 prev = curr; 3782 curr = curr.mNext; 3783 } 3784 3785 // If the event is blocked, then leave it in the queue to be delivered later. 3786 // Note that the event might not yet be in the queue if it was not previously 3787 // deferred so we will enqueue it if needed. 3788 if (blocked) { 3789 if (curr == null) { 3790 enqueue(q); 3791 } 3792 return; 3793 } 3794 3795 // The event is not blocked. Deliver it immediately. 3796 if (curr != null) { 3797 curr = curr.mNext; 3798 dequeue(q, prev); 3799 } 3800 super.forward(q); 3801 3802 // Dequeuing this event may have unblocked successors. Deliver them. 3803 while (curr != null) { 3804 if (deviceId == curr.mEvent.getDeviceId()) { 3805 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3806 break; 3807 } 3808 QueuedInputEvent next = curr.mNext; 3809 dequeue(curr, prev); 3810 super.forward(curr); 3811 curr = next; 3812 } else { 3813 prev = curr; 3814 curr = curr.mNext; 3815 } 3816 } 3817 } 3818 3819 @Override 3820 protected void apply(QueuedInputEvent q, int result) { 3821 if (result == DEFER) { 3822 defer(q); 3823 } else { 3824 super.apply(q, result); 3825 } 3826 } 3827 3828 private void enqueue(QueuedInputEvent q) { 3829 if (mQueueTail == null) { 3830 mQueueHead = q; 3831 mQueueTail = q; 3832 } else { 3833 mQueueTail.mNext = q; 3834 mQueueTail = q; 3835 } 3836 3837 mQueueLength += 1; 3838 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3839 } 3840 3841 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3842 if (prev == null) { 3843 mQueueHead = q.mNext; 3844 } else { 3845 prev.mNext = q.mNext; 3846 } 3847 if (mQueueTail == q) { 3848 mQueueTail = prev; 3849 } 3850 q.mNext = null; 3851 3852 mQueueLength -= 1; 3853 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3854 } 3855 3856 @Override 3857 void dump(String prefix, PrintWriter writer) { 3858 writer.print(prefix); 3859 writer.print(getClass().getName()); 3860 writer.print(": mQueueLength="); 3861 writer.println(mQueueLength); 3862 3863 super.dump(prefix, writer); 3864 } 3865 } 3866 3867 /** 3868 * Delivers pre-ime input events to a native activity. 3869 * Does not support pointer events. 3870 */ 3871 final class NativePreImeInputStage extends AsyncInputStage 3872 implements InputQueue.FinishedInputEventCallback { 3873 public NativePreImeInputStage(InputStage next, String traceCounter) { 3874 super(next, traceCounter); 3875 } 3876 3877 @Override 3878 protected int onProcess(QueuedInputEvent q) { 3879 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3880 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3881 return DEFER; 3882 } 3883 return FORWARD; 3884 } 3885 3886 @Override 3887 public void onFinishedInputEvent(Object token, boolean handled) { 3888 QueuedInputEvent q = (QueuedInputEvent)token; 3889 if (handled) { 3890 finish(q, true); 3891 return; 3892 } 3893 forward(q); 3894 } 3895 } 3896 3897 /** 3898 * Delivers pre-ime input events to the view hierarchy. 3899 * Does not support pointer events. 3900 */ 3901 final class ViewPreImeInputStage extends InputStage { 3902 public ViewPreImeInputStage(InputStage next) { 3903 super(next); 3904 } 3905 3906 @Override 3907 protected int onProcess(QueuedInputEvent q) { 3908 if (q.mEvent instanceof KeyEvent) { 3909 return processKeyEvent(q); 3910 } 3911 return FORWARD; 3912 } 3913 3914 private int processKeyEvent(QueuedInputEvent q) { 3915 final KeyEvent event = (KeyEvent)q.mEvent; 3916 if (mView.dispatchKeyEventPreIme(event)) { 3917 return FINISH_HANDLED; 3918 } 3919 return FORWARD; 3920 } 3921 } 3922 3923 /** 3924 * Delivers input events to the ime. 3925 * Does not support pointer events. 3926 */ 3927 final class ImeInputStage extends AsyncInputStage 3928 implements InputMethodManager.FinishedInputEventCallback { 3929 public ImeInputStage(InputStage next, String traceCounter) { 3930 super(next, traceCounter); 3931 } 3932 3933 @Override 3934 protected int onProcess(QueuedInputEvent q) { 3935 if (mLastWasImTarget && !isInLocalFocusMode()) { 3936 InputMethodManager imm = InputMethodManager.peekInstance(); 3937 if (imm != null) { 3938 final InputEvent event = q.mEvent; 3939 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3940 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3941 if (result == InputMethodManager.DISPATCH_HANDLED) { 3942 return FINISH_HANDLED; 3943 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3944 // The IME could not handle it, so skip along to the next InputStage 3945 return FORWARD; 3946 } else { 3947 return DEFER; // callback will be invoked later 3948 } 3949 } 3950 } 3951 return FORWARD; 3952 } 3953 3954 @Override 3955 public void onFinishedInputEvent(Object token, boolean handled) { 3956 QueuedInputEvent q = (QueuedInputEvent)token; 3957 if (handled) { 3958 finish(q, true); 3959 return; 3960 } 3961 forward(q); 3962 } 3963 } 3964 3965 /** 3966 * Performs early processing of post-ime input events. 3967 */ 3968 final class EarlyPostImeInputStage extends InputStage { 3969 public EarlyPostImeInputStage(InputStage next) { 3970 super(next); 3971 } 3972 3973 @Override 3974 protected int onProcess(QueuedInputEvent q) { 3975 if (q.mEvent instanceof KeyEvent) { 3976 return processKeyEvent(q); 3977 } else { 3978 final int source = q.mEvent.getSource(); 3979 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3980 return processPointerEvent(q); 3981 } 3982 } 3983 return FORWARD; 3984 } 3985 3986 private int processKeyEvent(QueuedInputEvent q) { 3987 final KeyEvent event = (KeyEvent)q.mEvent; 3988 3989 // If the key's purpose is to exit touch mode then we consume it 3990 // and consider it handled. 3991 if (checkForLeavingTouchModeAndConsume(event)) { 3992 return FINISH_HANDLED; 3993 } 3994 3995 // Make sure the fallback event policy sees all keys that will be 3996 // delivered to the view hierarchy. 3997 mFallbackEventHandler.preDispatchKeyEvent(event); 3998 return FORWARD; 3999 } 4000 4001 private int processPointerEvent(QueuedInputEvent q) { 4002 final MotionEvent event = (MotionEvent)q.mEvent; 4003 4004 // Translate the pointer event for compatibility, if needed. 4005 if (mTranslator != null) { 4006 mTranslator.translateEventInScreenToAppWindow(event); 4007 } 4008 4009 // Enter touch mode on down or scroll. 4010 final int action = event.getAction(); 4011 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 4012 ensureTouchMode(true); 4013 } 4014 4015 // Offset the scroll position. 4016 if (mCurScrollY != 0) { 4017 event.offsetLocation(0, mCurScrollY); 4018 } 4019 4020 // Remember the touch position for possible drag-initiation. 4021 if (event.isTouchEvent()) { 4022 mLastTouchPoint.x = event.getRawX(); 4023 mLastTouchPoint.y = event.getRawY(); 4024 } 4025 return FORWARD; 4026 } 4027 } 4028 4029 /** 4030 * Delivers post-ime input events to a native activity. 4031 */ 4032 final class NativePostImeInputStage extends AsyncInputStage 4033 implements InputQueue.FinishedInputEventCallback { 4034 public NativePostImeInputStage(InputStage next, String traceCounter) { 4035 super(next, traceCounter); 4036 } 4037 4038 @Override 4039 protected int onProcess(QueuedInputEvent q) { 4040 if (mInputQueue != null) { 4041 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 4042 return DEFER; 4043 } 4044 return FORWARD; 4045 } 4046 4047 @Override 4048 public void onFinishedInputEvent(Object token, boolean handled) { 4049 QueuedInputEvent q = (QueuedInputEvent)token; 4050 if (handled) { 4051 finish(q, true); 4052 return; 4053 } 4054 forward(q); 4055 } 4056 } 4057 4058 /** 4059 * Delivers post-ime input events to the view hierarchy. 4060 */ 4061 final class ViewPostImeInputStage extends InputStage { 4062 public ViewPostImeInputStage(InputStage next) { 4063 super(next); 4064 } 4065 4066 @Override 4067 protected int onProcess(QueuedInputEvent q) { 4068 if (q.mEvent instanceof KeyEvent) { 4069 return processKeyEvent(q); 4070 } else { 4071 final int source = q.mEvent.getSource(); 4072 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4073 return processPointerEvent(q); 4074 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4075 return processTrackballEvent(q); 4076 } else { 4077 return processGenericMotionEvent(q); 4078 } 4079 } 4080 } 4081 4082 @Override 4083 protected void onDeliverToNext(QueuedInputEvent q) { 4084 if (mUnbufferedInputDispatch 4085 && q.mEvent instanceof MotionEvent 4086 && ((MotionEvent)q.mEvent).isTouchEvent() 4087 && isTerminalInputEvent(q.mEvent)) { 4088 mUnbufferedInputDispatch = false; 4089 scheduleConsumeBatchedInput(); 4090 } 4091 super.onDeliverToNext(q); 4092 } 4093 4094 private int processKeyEvent(QueuedInputEvent q) { 4095 final KeyEvent event = (KeyEvent)q.mEvent; 4096 4097 // Deliver the key to the view hierarchy. 4098 if (mView.dispatchKeyEvent(event)) { 4099 return FINISH_HANDLED; 4100 } 4101 4102 if (shouldDropInputEvent(q)) { 4103 return FINISH_NOT_HANDLED; 4104 } 4105 4106 // If the Control modifier is held, try to interpret the key as a shortcut. 4107 if (event.getAction() == KeyEvent.ACTION_DOWN 4108 && event.isCtrlPressed() 4109 && event.getRepeatCount() == 0 4110 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4111 if (mView.dispatchKeyShortcutEvent(event)) { 4112 return FINISH_HANDLED; 4113 } 4114 if (shouldDropInputEvent(q)) { 4115 return FINISH_NOT_HANDLED; 4116 } 4117 } 4118 4119 // Apply the fallback event policy. 4120 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4121 return FINISH_HANDLED; 4122 } 4123 if (shouldDropInputEvent(q)) { 4124 return FINISH_NOT_HANDLED; 4125 } 4126 4127 // Handle automatic focus changes. 4128 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4129 int direction = 0; 4130 switch (event.getKeyCode()) { 4131 case KeyEvent.KEYCODE_DPAD_LEFT: 4132 if (event.hasNoModifiers()) { 4133 direction = View.FOCUS_LEFT; 4134 } 4135 break; 4136 case KeyEvent.KEYCODE_DPAD_RIGHT: 4137 if (event.hasNoModifiers()) { 4138 direction = View.FOCUS_RIGHT; 4139 } 4140 break; 4141 case KeyEvent.KEYCODE_DPAD_UP: 4142 if (event.hasNoModifiers()) { 4143 direction = View.FOCUS_UP; 4144 } 4145 break; 4146 case KeyEvent.KEYCODE_DPAD_DOWN: 4147 if (event.hasNoModifiers()) { 4148 direction = View.FOCUS_DOWN; 4149 } 4150 break; 4151 case KeyEvent.KEYCODE_TAB: 4152 if (event.hasNoModifiers()) { 4153 direction = View.FOCUS_FORWARD; 4154 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4155 direction = View.FOCUS_BACKWARD; 4156 } 4157 break; 4158 } 4159 if (direction != 0) { 4160 View focused = mView.findFocus(); 4161 if (focused != null) { 4162 View v = focused.focusSearch(direction); 4163 if (v != null && v != focused) { 4164 // do the math the get the interesting rect 4165 // of previous focused into the coord system of 4166 // newly focused view 4167 focused.getFocusedRect(mTempRect); 4168 if (mView instanceof ViewGroup) { 4169 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4170 focused, mTempRect); 4171 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4172 v, mTempRect); 4173 } 4174 if (v.requestFocus(direction, mTempRect)) { 4175 playSoundEffect(SoundEffectConstants 4176 .getContantForFocusDirection(direction)); 4177 return FINISH_HANDLED; 4178 } 4179 } 4180 4181 // Give the focused view a last chance to handle the dpad key. 4182 if (mView.dispatchUnhandledMove(focused, direction)) { 4183 return FINISH_HANDLED; 4184 } 4185 } else { 4186 // find the best view to give focus to in this non-touch-mode with no-focus 4187 View v = focusSearch(null, direction); 4188 if (v != null && v.requestFocus(direction)) { 4189 return FINISH_HANDLED; 4190 } 4191 } 4192 } 4193 } 4194 return FORWARD; 4195 } 4196 4197 private int processPointerEvent(QueuedInputEvent q) { 4198 final MotionEvent event = (MotionEvent)q.mEvent; 4199 4200 if (event.getPointerCount() == 1 4201 && event.isFromSource(InputDevice.SOURCE_MOUSE)) { 4202 if (event.getActionMasked() == MotionEvent.ACTION_HOVER_ENTER 4203 || event.getActionMasked() == MotionEvent.ACTION_HOVER_EXIT) { 4204 // Other apps or the window manager may change the icon shape outside of 4205 // this app, therefore the icon shape has to be reset on enter/exit event. 4206 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4207 } 4208 4209 final float x = event.getX(); 4210 final float y = event.getY(); 4211 if (event.getActionMasked() != MotionEvent.ACTION_HOVER_EXIT 4212 && x >= 0 && x < mView.getWidth() && y >= 0 && y < mView.getHeight()) { 4213 int pointerShape = mView.getPointerShape(event, x, y); 4214 if (pointerShape == PointerIcon.STYLE_NOT_SPECIFIED) { 4215 pointerShape = PointerIcon.STYLE_DEFAULT; 4216 } 4217 4218 if (mPointerIconShape != pointerShape) { 4219 mPointerIconShape = pointerShape; 4220 final InputDevice inputDevice = event.getDevice(); 4221 if (inputDevice != null) { 4222 inputDevice.setPointerShape(pointerShape); 4223 } 4224 } 4225 } else if (event.getActionMasked() == MotionEvent.ACTION_HOVER_MOVE) { 4226 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4227 } 4228 } 4229 4230 mAttachInfo.mUnbufferedDispatchRequested = false; 4231 boolean handled = mView.dispatchPointerEvent(event); 4232 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4233 mUnbufferedInputDispatch = true; 4234 if (mConsumeBatchedInputScheduled) { 4235 scheduleConsumeBatchedInputImmediately(); 4236 } 4237 } 4238 return handled ? FINISH_HANDLED : FORWARD; 4239 } 4240 4241 private int processTrackballEvent(QueuedInputEvent q) { 4242 final MotionEvent event = (MotionEvent)q.mEvent; 4243 4244 if (mView.dispatchTrackballEvent(event)) { 4245 return FINISH_HANDLED; 4246 } 4247 return FORWARD; 4248 } 4249 4250 private int processGenericMotionEvent(QueuedInputEvent q) { 4251 final MotionEvent event = (MotionEvent)q.mEvent; 4252 4253 // Deliver the event to the view. 4254 if (mView.dispatchGenericMotionEvent(event)) { 4255 return FINISH_HANDLED; 4256 } 4257 return FORWARD; 4258 } 4259 } 4260 4261 /** 4262 * Performs synthesis of new input events from unhandled input events. 4263 */ 4264 final class SyntheticInputStage extends InputStage { 4265 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4266 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4267 private final SyntheticTouchNavigationHandler mTouchNavigation = 4268 new SyntheticTouchNavigationHandler(); 4269 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4270 4271 public SyntheticInputStage() { 4272 super(null); 4273 } 4274 4275 @Override 4276 protected int onProcess(QueuedInputEvent q) { 4277 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4278 if (q.mEvent instanceof MotionEvent) { 4279 final MotionEvent event = (MotionEvent)q.mEvent; 4280 final int source = event.getSource(); 4281 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4282 mTrackball.process(event); 4283 return FINISH_HANDLED; 4284 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4285 mJoystick.process(event); 4286 return FINISH_HANDLED; 4287 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4288 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4289 mTouchNavigation.process(event); 4290 return FINISH_HANDLED; 4291 } 4292 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4293 mKeyboard.process((KeyEvent)q.mEvent); 4294 return FINISH_HANDLED; 4295 } 4296 4297 return FORWARD; 4298 } 4299 4300 @Override 4301 protected void onDeliverToNext(QueuedInputEvent q) { 4302 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4303 // Cancel related synthetic events if any prior stage has handled the event. 4304 if (q.mEvent instanceof MotionEvent) { 4305 final MotionEvent event = (MotionEvent)q.mEvent; 4306 final int source = event.getSource(); 4307 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4308 mTrackball.cancel(event); 4309 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4310 mJoystick.cancel(event); 4311 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4312 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4313 mTouchNavigation.cancel(event); 4314 } 4315 } 4316 } 4317 super.onDeliverToNext(q); 4318 } 4319 } 4320 4321 /** 4322 * Creates dpad events from unhandled trackball movements. 4323 */ 4324 final class SyntheticTrackballHandler { 4325 private final TrackballAxis mX = new TrackballAxis(); 4326 private final TrackballAxis mY = new TrackballAxis(); 4327 private long mLastTime; 4328 4329 public void process(MotionEvent event) { 4330 // Translate the trackball event into DPAD keys and try to deliver those. 4331 long curTime = SystemClock.uptimeMillis(); 4332 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4333 // It has been too long since the last movement, 4334 // so restart at the beginning. 4335 mX.reset(0); 4336 mY.reset(0); 4337 mLastTime = curTime; 4338 } 4339 4340 final int action = event.getAction(); 4341 final int metaState = event.getMetaState(); 4342 switch (action) { 4343 case MotionEvent.ACTION_DOWN: 4344 mX.reset(2); 4345 mY.reset(2); 4346 enqueueInputEvent(new KeyEvent(curTime, curTime, 4347 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4348 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4349 InputDevice.SOURCE_KEYBOARD)); 4350 break; 4351 case MotionEvent.ACTION_UP: 4352 mX.reset(2); 4353 mY.reset(2); 4354 enqueueInputEvent(new KeyEvent(curTime, curTime, 4355 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4356 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4357 InputDevice.SOURCE_KEYBOARD)); 4358 break; 4359 } 4360 4361 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4362 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4363 + " move=" + event.getX() 4364 + " / Y=" + mY.position + " step=" 4365 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4366 + " move=" + event.getY()); 4367 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4368 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4369 4370 // Generate DPAD events based on the trackball movement. 4371 // We pick the axis that has moved the most as the direction of 4372 // the DPAD. When we generate DPAD events for one axis, then the 4373 // other axis is reset -- we don't want to perform DPAD jumps due 4374 // to slight movements in the trackball when making major movements 4375 // along the other axis. 4376 int keycode = 0; 4377 int movement = 0; 4378 float accel = 1; 4379 if (xOff > yOff) { 4380 movement = mX.generate(); 4381 if (movement != 0) { 4382 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4383 : KeyEvent.KEYCODE_DPAD_LEFT; 4384 accel = mX.acceleration; 4385 mY.reset(2); 4386 } 4387 } else if (yOff > 0) { 4388 movement = mY.generate(); 4389 if (movement != 0) { 4390 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4391 : KeyEvent.KEYCODE_DPAD_UP; 4392 accel = mY.acceleration; 4393 mX.reset(2); 4394 } 4395 } 4396 4397 if (keycode != 0) { 4398 if (movement < 0) movement = -movement; 4399 int accelMovement = (int)(movement * accel); 4400 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4401 + " accelMovement=" + accelMovement 4402 + " accel=" + accel); 4403 if (accelMovement > movement) { 4404 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4405 + keycode); 4406 movement--; 4407 int repeatCount = accelMovement - movement; 4408 enqueueInputEvent(new KeyEvent(curTime, curTime, 4409 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4410 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4411 InputDevice.SOURCE_KEYBOARD)); 4412 } 4413 while (movement > 0) { 4414 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4415 + keycode); 4416 movement--; 4417 curTime = SystemClock.uptimeMillis(); 4418 enqueueInputEvent(new KeyEvent(curTime, curTime, 4419 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4420 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4421 InputDevice.SOURCE_KEYBOARD)); 4422 enqueueInputEvent(new KeyEvent(curTime, curTime, 4423 KeyEvent.ACTION_UP, keycode, 0, metaState, 4424 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4425 InputDevice.SOURCE_KEYBOARD)); 4426 } 4427 mLastTime = curTime; 4428 } 4429 } 4430 4431 public void cancel(MotionEvent event) { 4432 mLastTime = Integer.MIN_VALUE; 4433 4434 // If we reach this, we consumed a trackball event. 4435 // Because we will not translate the trackball event into a key event, 4436 // touch mode will not exit, so we exit touch mode here. 4437 if (mView != null && mAdded) { 4438 ensureTouchMode(false); 4439 } 4440 } 4441 } 4442 4443 /** 4444 * Maintains state information for a single trackball axis, generating 4445 * discrete (DPAD) movements based on raw trackball motion. 4446 */ 4447 static final class TrackballAxis { 4448 /** 4449 * The maximum amount of acceleration we will apply. 4450 */ 4451 static final float MAX_ACCELERATION = 20; 4452 4453 /** 4454 * The maximum amount of time (in milliseconds) between events in order 4455 * for us to consider the user to be doing fast trackball movements, 4456 * and thus apply an acceleration. 4457 */ 4458 static final long FAST_MOVE_TIME = 150; 4459 4460 /** 4461 * Scaling factor to the time (in milliseconds) between events to how 4462 * much to multiple/divide the current acceleration. When movement 4463 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4464 * FAST_MOVE_TIME it divides it. 4465 */ 4466 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4467 4468 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4469 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4470 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4471 4472 float position; 4473 float acceleration = 1; 4474 long lastMoveTime = 0; 4475 int step; 4476 int dir; 4477 int nonAccelMovement; 4478 4479 void reset(int _step) { 4480 position = 0; 4481 acceleration = 1; 4482 lastMoveTime = 0; 4483 step = _step; 4484 dir = 0; 4485 } 4486 4487 /** 4488 * Add trackball movement into the state. If the direction of movement 4489 * has been reversed, the state is reset before adding the 4490 * movement (so that you don't have to compensate for any previously 4491 * collected movement before see the result of the movement in the 4492 * new direction). 4493 * 4494 * @return Returns the absolute value of the amount of movement 4495 * collected so far. 4496 */ 4497 float collect(float off, long time, String axis) { 4498 long normTime; 4499 if (off > 0) { 4500 normTime = (long)(off * FAST_MOVE_TIME); 4501 if (dir < 0) { 4502 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4503 position = 0; 4504 step = 0; 4505 acceleration = 1; 4506 lastMoveTime = 0; 4507 } 4508 dir = 1; 4509 } else if (off < 0) { 4510 normTime = (long)((-off) * FAST_MOVE_TIME); 4511 if (dir > 0) { 4512 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4513 position = 0; 4514 step = 0; 4515 acceleration = 1; 4516 lastMoveTime = 0; 4517 } 4518 dir = -1; 4519 } else { 4520 normTime = 0; 4521 } 4522 4523 // The number of milliseconds between each movement that is 4524 // considered "normal" and will not result in any acceleration 4525 // or deceleration, scaled by the offset we have here. 4526 if (normTime > 0) { 4527 long delta = time - lastMoveTime; 4528 lastMoveTime = time; 4529 float acc = acceleration; 4530 if (delta < normTime) { 4531 // The user is scrolling rapidly, so increase acceleration. 4532 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4533 if (scale > 1) acc *= scale; 4534 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4535 + off + " normTime=" + normTime + " delta=" + delta 4536 + " scale=" + scale + " acc=" + acc); 4537 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4538 } else { 4539 // The user is scrolling slowly, so decrease acceleration. 4540 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4541 if (scale > 1) acc /= scale; 4542 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4543 + off + " normTime=" + normTime + " delta=" + delta 4544 + " scale=" + scale + " acc=" + acc); 4545 acceleration = acc > 1 ? acc : 1; 4546 } 4547 } 4548 position += off; 4549 return Math.abs(position); 4550 } 4551 4552 /** 4553 * Generate the number of discrete movement events appropriate for 4554 * the currently collected trackball movement. 4555 * 4556 * @return Returns the number of discrete movements, either positive 4557 * or negative, or 0 if there is not enough trackball movement yet 4558 * for a discrete movement. 4559 */ 4560 int generate() { 4561 int movement = 0; 4562 nonAccelMovement = 0; 4563 do { 4564 final int dir = position >= 0 ? 1 : -1; 4565 switch (step) { 4566 // If we are going to execute the first step, then we want 4567 // to do this as soon as possible instead of waiting for 4568 // a full movement, in order to make things look responsive. 4569 case 0: 4570 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4571 return movement; 4572 } 4573 movement += dir; 4574 nonAccelMovement += dir; 4575 step = 1; 4576 break; 4577 // If we have generated the first movement, then we need 4578 // to wait for the second complete trackball motion before 4579 // generating the second discrete movement. 4580 case 1: 4581 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4582 return movement; 4583 } 4584 movement += dir; 4585 nonAccelMovement += dir; 4586 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4587 step = 2; 4588 break; 4589 // After the first two, we generate discrete movements 4590 // consistently with the trackball, applying an acceleration 4591 // if the trackball is moving quickly. This is a simple 4592 // acceleration on top of what we already compute based 4593 // on how quickly the wheel is being turned, to apply 4594 // a longer increasing acceleration to continuous movement 4595 // in one direction. 4596 default: 4597 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4598 return movement; 4599 } 4600 movement += dir; 4601 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4602 float acc = acceleration; 4603 acc *= 1.1f; 4604 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4605 break; 4606 } 4607 } while (true); 4608 } 4609 } 4610 4611 /** 4612 * Creates dpad events from unhandled joystick movements. 4613 */ 4614 final class SyntheticJoystickHandler extends Handler { 4615 private final static String TAG = "SyntheticJoystickHandler"; 4616 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4617 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4618 4619 private int mLastXDirection; 4620 private int mLastYDirection; 4621 private int mLastXKeyCode; 4622 private int mLastYKeyCode; 4623 4624 public SyntheticJoystickHandler() { 4625 super(true); 4626 } 4627 4628 @Override 4629 public void handleMessage(Message msg) { 4630 switch (msg.what) { 4631 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4632 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4633 KeyEvent oldEvent = (KeyEvent)msg.obj; 4634 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4635 SystemClock.uptimeMillis(), 4636 oldEvent.getRepeatCount() + 1); 4637 if (mAttachInfo.mHasWindowFocus) { 4638 enqueueInputEvent(e); 4639 Message m = obtainMessage(msg.what, e); 4640 m.setAsynchronous(true); 4641 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4642 } 4643 } break; 4644 } 4645 } 4646 4647 public void process(MotionEvent event) { 4648 switch(event.getActionMasked()) { 4649 case MotionEvent.ACTION_CANCEL: 4650 cancel(event); 4651 break; 4652 case MotionEvent.ACTION_MOVE: 4653 update(event, true); 4654 break; 4655 default: 4656 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4657 } 4658 } 4659 4660 private void cancel(MotionEvent event) { 4661 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4662 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4663 update(event, false); 4664 } 4665 4666 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4667 final long time = event.getEventTime(); 4668 final int metaState = event.getMetaState(); 4669 final int deviceId = event.getDeviceId(); 4670 final int source = event.getSource(); 4671 4672 int xDirection = joystickAxisValueToDirection( 4673 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4674 if (xDirection == 0) { 4675 xDirection = joystickAxisValueToDirection(event.getX()); 4676 } 4677 4678 int yDirection = joystickAxisValueToDirection( 4679 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4680 if (yDirection == 0) { 4681 yDirection = joystickAxisValueToDirection(event.getY()); 4682 } 4683 4684 if (xDirection != mLastXDirection) { 4685 if (mLastXKeyCode != 0) { 4686 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4687 enqueueInputEvent(new KeyEvent(time, time, 4688 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4689 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4690 mLastXKeyCode = 0; 4691 } 4692 4693 mLastXDirection = xDirection; 4694 4695 if (xDirection != 0 && synthesizeNewKeys) { 4696 mLastXKeyCode = xDirection > 0 4697 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4698 final KeyEvent e = new KeyEvent(time, time, 4699 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4700 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4701 enqueueInputEvent(e); 4702 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4703 m.setAsynchronous(true); 4704 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4705 } 4706 } 4707 4708 if (yDirection != mLastYDirection) { 4709 if (mLastYKeyCode != 0) { 4710 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4711 enqueueInputEvent(new KeyEvent(time, time, 4712 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4713 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4714 mLastYKeyCode = 0; 4715 } 4716 4717 mLastYDirection = yDirection; 4718 4719 if (yDirection != 0 && synthesizeNewKeys) { 4720 mLastYKeyCode = yDirection > 0 4721 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4722 final KeyEvent e = new KeyEvent(time, time, 4723 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4724 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4725 enqueueInputEvent(e); 4726 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4727 m.setAsynchronous(true); 4728 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4729 } 4730 } 4731 } 4732 4733 private int joystickAxisValueToDirection(float value) { 4734 if (value >= 0.5f) { 4735 return 1; 4736 } else if (value <= -0.5f) { 4737 return -1; 4738 } else { 4739 return 0; 4740 } 4741 } 4742 } 4743 4744 /** 4745 * Creates dpad events from unhandled touch navigation movements. 4746 */ 4747 final class SyntheticTouchNavigationHandler extends Handler { 4748 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4749 private static final boolean LOCAL_DEBUG = false; 4750 4751 // Assumed nominal width and height in millimeters of a touch navigation pad, 4752 // if no resolution information is available from the input system. 4753 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4754 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4755 4756 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4757 4758 // The nominal distance traveled to move by one unit. 4759 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4760 4761 // Minimum and maximum fling velocity in ticks per second. 4762 // The minimum velocity should be set such that we perform enough ticks per 4763 // second that the fling appears to be fluid. For example, if we set the minimum 4764 // to 2 ticks per second, then there may be up to half a second delay between the next 4765 // to last and last ticks which is noticeably discrete and jerky. This value should 4766 // probably not be set to anything less than about 4. 4767 // If fling accuracy is a problem then consider tuning the tick distance instead. 4768 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4769 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4770 4771 // Fling velocity decay factor applied after each new key is emitted. 4772 // This parameter controls the deceleration and overall duration of the fling. 4773 // The fling stops automatically when its velocity drops below the minimum 4774 // fling velocity defined above. 4775 private static final float FLING_TICK_DECAY = 0.8f; 4776 4777 /* The input device that we are tracking. */ 4778 4779 private int mCurrentDeviceId = -1; 4780 private int mCurrentSource; 4781 private boolean mCurrentDeviceSupported; 4782 4783 /* Configuration for the current input device. */ 4784 4785 // The scaled tick distance. A movement of this amount should generally translate 4786 // into a single dpad event in a given direction. 4787 private float mConfigTickDistance; 4788 4789 // The minimum and maximum scaled fling velocity. 4790 private float mConfigMinFlingVelocity; 4791 private float mConfigMaxFlingVelocity; 4792 4793 /* Tracking state. */ 4794 4795 // The velocity tracker for detecting flings. 4796 private VelocityTracker mVelocityTracker; 4797 4798 // The active pointer id, or -1 if none. 4799 private int mActivePointerId = -1; 4800 4801 // Location where tracking started. 4802 private float mStartX; 4803 private float mStartY; 4804 4805 // Most recently observed position. 4806 private float mLastX; 4807 private float mLastY; 4808 4809 // Accumulated movement delta since the last direction key was sent. 4810 private float mAccumulatedX; 4811 private float mAccumulatedY; 4812 4813 // Set to true if any movement was delivered to the app. 4814 // Implies that tap slop was exceeded. 4815 private boolean mConsumedMovement; 4816 4817 // The most recently sent key down event. 4818 // The keycode remains set until the direction changes or a fling ends 4819 // so that repeated key events may be generated as required. 4820 private long mPendingKeyDownTime; 4821 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4822 private int mPendingKeyRepeatCount; 4823 private int mPendingKeyMetaState; 4824 4825 // The current fling velocity while a fling is in progress. 4826 private boolean mFlinging; 4827 private float mFlingVelocity; 4828 4829 public SyntheticTouchNavigationHandler() { 4830 super(true); 4831 } 4832 4833 public void process(MotionEvent event) { 4834 // Update the current device information. 4835 final long time = event.getEventTime(); 4836 final int deviceId = event.getDeviceId(); 4837 final int source = event.getSource(); 4838 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4839 finishKeys(time); 4840 finishTracking(time); 4841 mCurrentDeviceId = deviceId; 4842 mCurrentSource = source; 4843 mCurrentDeviceSupported = false; 4844 InputDevice device = event.getDevice(); 4845 if (device != null) { 4846 // In order to support an input device, we must know certain 4847 // characteristics about it, such as its size and resolution. 4848 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4849 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4850 if (xRange != null && yRange != null) { 4851 mCurrentDeviceSupported = true; 4852 4853 // Infer the resolution if it not actually known. 4854 float xRes = xRange.getResolution(); 4855 if (xRes <= 0) { 4856 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4857 } 4858 float yRes = yRange.getResolution(); 4859 if (yRes <= 0) { 4860 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4861 } 4862 float nominalRes = (xRes + yRes) * 0.5f; 4863 4864 // Precompute all of the configuration thresholds we will need. 4865 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4866 mConfigMinFlingVelocity = 4867 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4868 mConfigMaxFlingVelocity = 4869 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4870 4871 if (LOCAL_DEBUG) { 4872 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4873 + " (" + Integer.toHexString(mCurrentSource) + "): " 4874 + ", mConfigTickDistance=" + mConfigTickDistance 4875 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4876 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4877 } 4878 } 4879 } 4880 } 4881 if (!mCurrentDeviceSupported) { 4882 return; 4883 } 4884 4885 // Handle the event. 4886 final int action = event.getActionMasked(); 4887 switch (action) { 4888 case MotionEvent.ACTION_DOWN: { 4889 boolean caughtFling = mFlinging; 4890 finishKeys(time); 4891 finishTracking(time); 4892 mActivePointerId = event.getPointerId(0); 4893 mVelocityTracker = VelocityTracker.obtain(); 4894 mVelocityTracker.addMovement(event); 4895 mStartX = event.getX(); 4896 mStartY = event.getY(); 4897 mLastX = mStartX; 4898 mLastY = mStartY; 4899 mAccumulatedX = 0; 4900 mAccumulatedY = 0; 4901 4902 // If we caught a fling, then pretend that the tap slop has already 4903 // been exceeded to suppress taps whose only purpose is to stop the fling. 4904 mConsumedMovement = caughtFling; 4905 break; 4906 } 4907 4908 case MotionEvent.ACTION_MOVE: 4909 case MotionEvent.ACTION_UP: { 4910 if (mActivePointerId < 0) { 4911 break; 4912 } 4913 final int index = event.findPointerIndex(mActivePointerId); 4914 if (index < 0) { 4915 finishKeys(time); 4916 finishTracking(time); 4917 break; 4918 } 4919 4920 mVelocityTracker.addMovement(event); 4921 final float x = event.getX(index); 4922 final float y = event.getY(index); 4923 mAccumulatedX += x - mLastX; 4924 mAccumulatedY += y - mLastY; 4925 mLastX = x; 4926 mLastY = y; 4927 4928 // Consume any accumulated movement so far. 4929 final int metaState = event.getMetaState(); 4930 consumeAccumulatedMovement(time, metaState); 4931 4932 // Detect taps and flings. 4933 if (action == MotionEvent.ACTION_UP) { 4934 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4935 // It might be a fling. 4936 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4937 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4938 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4939 if (!startFling(time, vx, vy)) { 4940 finishKeys(time); 4941 } 4942 } 4943 finishTracking(time); 4944 } 4945 break; 4946 } 4947 4948 case MotionEvent.ACTION_CANCEL: { 4949 finishKeys(time); 4950 finishTracking(time); 4951 break; 4952 } 4953 } 4954 } 4955 4956 public void cancel(MotionEvent event) { 4957 if (mCurrentDeviceId == event.getDeviceId() 4958 && mCurrentSource == event.getSource()) { 4959 final long time = event.getEventTime(); 4960 finishKeys(time); 4961 finishTracking(time); 4962 } 4963 } 4964 4965 private void finishKeys(long time) { 4966 cancelFling(); 4967 sendKeyUp(time); 4968 } 4969 4970 private void finishTracking(long time) { 4971 if (mActivePointerId >= 0) { 4972 mActivePointerId = -1; 4973 mVelocityTracker.recycle(); 4974 mVelocityTracker = null; 4975 } 4976 } 4977 4978 private void consumeAccumulatedMovement(long time, int metaState) { 4979 final float absX = Math.abs(mAccumulatedX); 4980 final float absY = Math.abs(mAccumulatedY); 4981 if (absX >= absY) { 4982 if (absX >= mConfigTickDistance) { 4983 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4984 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4985 mAccumulatedY = 0; 4986 mConsumedMovement = true; 4987 } 4988 } else { 4989 if (absY >= mConfigTickDistance) { 4990 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4991 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4992 mAccumulatedX = 0; 4993 mConsumedMovement = true; 4994 } 4995 } 4996 } 4997 4998 private float consumeAccumulatedMovement(long time, int metaState, 4999 float accumulator, int negativeKeyCode, int positiveKeyCode) { 5000 while (accumulator <= -mConfigTickDistance) { 5001 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 5002 accumulator += mConfigTickDistance; 5003 } 5004 while (accumulator >= mConfigTickDistance) { 5005 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 5006 accumulator -= mConfigTickDistance; 5007 } 5008 return accumulator; 5009 } 5010 5011 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 5012 if (mPendingKeyCode != keyCode) { 5013 sendKeyUp(time); 5014 mPendingKeyDownTime = time; 5015 mPendingKeyCode = keyCode; 5016 mPendingKeyRepeatCount = 0; 5017 } else { 5018 mPendingKeyRepeatCount += 1; 5019 } 5020 mPendingKeyMetaState = metaState; 5021 5022 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 5023 // but it doesn't quite make sense when simulating the events in this way. 5024 if (LOCAL_DEBUG) { 5025 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 5026 + ", repeatCount=" + mPendingKeyRepeatCount 5027 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5028 } 5029 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5030 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 5031 mPendingKeyMetaState, mCurrentDeviceId, 5032 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 5033 } 5034 5035 private void sendKeyUp(long time) { 5036 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5037 if (LOCAL_DEBUG) { 5038 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 5039 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5040 } 5041 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5042 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 5043 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 5044 mCurrentSource)); 5045 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5046 } 5047 } 5048 5049 private boolean startFling(long time, float vx, float vy) { 5050 if (LOCAL_DEBUG) { 5051 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 5052 + ", min=" + mConfigMinFlingVelocity); 5053 } 5054 5055 // Flings must be oriented in the same direction as the preceding movements. 5056 switch (mPendingKeyCode) { 5057 case KeyEvent.KEYCODE_DPAD_LEFT: 5058 if (-vx >= mConfigMinFlingVelocity 5059 && Math.abs(vy) < mConfigMinFlingVelocity) { 5060 mFlingVelocity = -vx; 5061 break; 5062 } 5063 return false; 5064 5065 case KeyEvent.KEYCODE_DPAD_RIGHT: 5066 if (vx >= mConfigMinFlingVelocity 5067 && Math.abs(vy) < mConfigMinFlingVelocity) { 5068 mFlingVelocity = vx; 5069 break; 5070 } 5071 return false; 5072 5073 case KeyEvent.KEYCODE_DPAD_UP: 5074 if (-vy >= mConfigMinFlingVelocity 5075 && Math.abs(vx) < mConfigMinFlingVelocity) { 5076 mFlingVelocity = -vy; 5077 break; 5078 } 5079 return false; 5080 5081 case KeyEvent.KEYCODE_DPAD_DOWN: 5082 if (vy >= mConfigMinFlingVelocity 5083 && Math.abs(vx) < mConfigMinFlingVelocity) { 5084 mFlingVelocity = vy; 5085 break; 5086 } 5087 return false; 5088 } 5089 5090 // Post the first fling event. 5091 mFlinging = postFling(time); 5092 return mFlinging; 5093 } 5094 5095 private boolean postFling(long time) { 5096 // The idea here is to estimate the time when the pointer would have 5097 // traveled one tick distance unit given the current fling velocity. 5098 // This effect creates continuity of motion. 5099 if (mFlingVelocity >= mConfigMinFlingVelocity) { 5100 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 5101 postAtTime(mFlingRunnable, time + delay); 5102 if (LOCAL_DEBUG) { 5103 Log.d(LOCAL_TAG, "Posted fling: velocity=" 5104 + mFlingVelocity + ", delay=" + delay 5105 + ", keyCode=" + mPendingKeyCode); 5106 } 5107 return true; 5108 } 5109 return false; 5110 } 5111 5112 private void cancelFling() { 5113 if (mFlinging) { 5114 removeCallbacks(mFlingRunnable); 5115 mFlinging = false; 5116 } 5117 } 5118 5119 private final Runnable mFlingRunnable = new Runnable() { 5120 @Override 5121 public void run() { 5122 final long time = SystemClock.uptimeMillis(); 5123 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5124 mFlingVelocity *= FLING_TICK_DECAY; 5125 if (!postFling(time)) { 5126 mFlinging = false; 5127 finishKeys(time); 5128 } 5129 } 5130 }; 5131 } 5132 5133 final class SyntheticKeyboardHandler { 5134 public void process(KeyEvent event) { 5135 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5136 return; 5137 } 5138 5139 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5140 final int keyCode = event.getKeyCode(); 5141 final int metaState = event.getMetaState(); 5142 5143 // Check for fallback actions specified by the key character map. 5144 KeyCharacterMap.FallbackAction fallbackAction = 5145 kcm.getFallbackAction(keyCode, metaState); 5146 if (fallbackAction != null) { 5147 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5148 KeyEvent fallbackEvent = KeyEvent.obtain( 5149 event.getDownTime(), event.getEventTime(), 5150 event.getAction(), fallbackAction.keyCode, 5151 event.getRepeatCount(), fallbackAction.metaState, 5152 event.getDeviceId(), event.getScanCode(), 5153 flags, event.getSource(), null); 5154 fallbackAction.recycle(); 5155 enqueueInputEvent(fallbackEvent); 5156 } 5157 } 5158 } 5159 5160 /** 5161 * Returns true if the key is used for keyboard navigation. 5162 * @param keyEvent The key event. 5163 * @return True if the key is used for keyboard navigation. 5164 */ 5165 private static boolean isNavigationKey(KeyEvent keyEvent) { 5166 switch (keyEvent.getKeyCode()) { 5167 case KeyEvent.KEYCODE_DPAD_LEFT: 5168 case KeyEvent.KEYCODE_DPAD_RIGHT: 5169 case KeyEvent.KEYCODE_DPAD_UP: 5170 case KeyEvent.KEYCODE_DPAD_DOWN: 5171 case KeyEvent.KEYCODE_DPAD_CENTER: 5172 case KeyEvent.KEYCODE_PAGE_UP: 5173 case KeyEvent.KEYCODE_PAGE_DOWN: 5174 case KeyEvent.KEYCODE_MOVE_HOME: 5175 case KeyEvent.KEYCODE_MOVE_END: 5176 case KeyEvent.KEYCODE_TAB: 5177 case KeyEvent.KEYCODE_SPACE: 5178 case KeyEvent.KEYCODE_ENTER: 5179 return true; 5180 } 5181 return false; 5182 } 5183 5184 /** 5185 * Returns true if the key is used for typing. 5186 * @param keyEvent The key event. 5187 * @return True if the key is used for typing. 5188 */ 5189 private static boolean isTypingKey(KeyEvent keyEvent) { 5190 return keyEvent.getUnicodeChar() > 0; 5191 } 5192 5193 /** 5194 * See if the key event means we should leave touch mode (and leave touch mode if so). 5195 * @param event The key event. 5196 * @return Whether this key event should be consumed (meaning the act of 5197 * leaving touch mode alone is considered the event). 5198 */ 5199 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5200 // Only relevant in touch mode. 5201 if (!mAttachInfo.mInTouchMode) { 5202 return false; 5203 } 5204 5205 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5206 final int action = event.getAction(); 5207 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5208 return false; 5209 } 5210 5211 // Don't leave touch mode if the IME told us not to. 5212 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5213 return false; 5214 } 5215 5216 // If the key can be used for keyboard navigation then leave touch mode 5217 // and select a focused view if needed (in ensureTouchMode). 5218 // When a new focused view is selected, we consume the navigation key because 5219 // navigation doesn't make much sense unless a view already has focus so 5220 // the key's purpose is to set focus. 5221 if (isNavigationKey(event)) { 5222 return ensureTouchMode(false); 5223 } 5224 5225 // If the key can be used for typing then leave touch mode 5226 // and select a focused view if needed (in ensureTouchMode). 5227 // Always allow the view to process the typing key. 5228 if (isTypingKey(event)) { 5229 ensureTouchMode(false); 5230 return false; 5231 } 5232 5233 return false; 5234 } 5235 5236 /* drag/drop */ 5237 void setLocalDragState(Object obj) { 5238 mLocalDragState = obj; 5239 } 5240 5241 private void handleDragEvent(DragEvent event) { 5242 // From the root, only drag start/end/location are dispatched. entered/exited 5243 // are determined and dispatched by the viewgroup hierarchy, who then report 5244 // that back here for ultimate reporting back to the framework. 5245 if (mView != null && mAdded) { 5246 final int what = event.mAction; 5247 5248 if (what == DragEvent.ACTION_DRAG_EXITED) { 5249 // A direct EXITED event means that the window manager knows we've just crossed 5250 // a window boundary, so the current drag target within this one must have 5251 // just been exited. Send it the usual notifications and then we're done 5252 // for now. 5253 mView.dispatchDragEvent(event); 5254 } else { 5255 // Cache the drag description when the operation starts, then fill it in 5256 // on subsequent calls as a convenience 5257 if (what == DragEvent.ACTION_DRAG_STARTED) { 5258 mCurrentDragView = null; // Start the current-recipient tracking 5259 mDragDescription = event.mClipDescription; 5260 } else { 5261 event.mClipDescription = mDragDescription; 5262 } 5263 5264 // For events with a [screen] location, translate into window coordinates 5265 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5266 mDragPoint.set(event.mX, event.mY); 5267 if (mTranslator != null) { 5268 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5269 } 5270 5271 if (mCurScrollY != 0) { 5272 mDragPoint.offset(0, mCurScrollY); 5273 } 5274 5275 event.mX = mDragPoint.x; 5276 event.mY = mDragPoint.y; 5277 } 5278 5279 // Remember who the current drag target is pre-dispatch 5280 final View prevDragView = mCurrentDragView; 5281 5282 // Now dispatch the drag/drop event 5283 boolean result = mView.dispatchDragEvent(event); 5284 5285 // If we changed apparent drag target, tell the OS about it 5286 if (prevDragView != mCurrentDragView) { 5287 try { 5288 if (prevDragView != null) { 5289 mWindowSession.dragRecipientExited(mWindow); 5290 } 5291 if (mCurrentDragView != null) { 5292 mWindowSession.dragRecipientEntered(mWindow); 5293 } 5294 } catch (RemoteException e) { 5295 Slog.e(TAG, "Unable to note drag target change"); 5296 } 5297 } 5298 5299 // Report the drop result when we're done 5300 if (what == DragEvent.ACTION_DROP) { 5301 mDragDescription = null; 5302 try { 5303 Log.i(TAG, "Reporting drop result: " + result); 5304 mWindowSession.reportDropResult(mWindow, result); 5305 } catch (RemoteException e) { 5306 Log.e(TAG, "Unable to report drop result"); 5307 } 5308 } 5309 5310 // When the drag operation ends, reset drag-related state 5311 if (what == DragEvent.ACTION_DRAG_ENDED) { 5312 setLocalDragState(null); 5313 mAttachInfo.mDragToken = null; 5314 } 5315 } 5316 } 5317 event.recycle(); 5318 } 5319 5320 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5321 if (mSeq != args.seq) { 5322 // The sequence has changed, so we need to update our value and make 5323 // sure to do a traversal afterward so the window manager is given our 5324 // most recent data. 5325 mSeq = args.seq; 5326 mAttachInfo.mForceReportNewAttributes = true; 5327 scheduleTraversals(); 5328 } 5329 if (mView == null) return; 5330 if (args.localChanges != 0) { 5331 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5332 } 5333 5334 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5335 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5336 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5337 mView.dispatchSystemUiVisibilityChanged(visibility); 5338 } 5339 } 5340 5341 public void handleDispatchWindowShown() { 5342 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5343 } 5344 5345 public void getLastTouchPoint(Point outLocation) { 5346 outLocation.x = (int) mLastTouchPoint.x; 5347 outLocation.y = (int) mLastTouchPoint.y; 5348 } 5349 5350 public void setDragFocus(View newDragTarget) { 5351 if (mCurrentDragView != newDragTarget) { 5352 mCurrentDragView = newDragTarget; 5353 } 5354 } 5355 5356 private AudioManager getAudioManager() { 5357 if (mView == null) { 5358 throw new IllegalStateException("getAudioManager called when there is no mView"); 5359 } 5360 if (mAudioManager == null) { 5361 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5362 } 5363 return mAudioManager; 5364 } 5365 5366 public AccessibilityInteractionController getAccessibilityInteractionController() { 5367 if (mView == null) { 5368 throw new IllegalStateException("getAccessibilityInteractionController" 5369 + " called when there is no mView"); 5370 } 5371 if (mAccessibilityInteractionController == null) { 5372 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5373 } 5374 return mAccessibilityInteractionController; 5375 } 5376 5377 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5378 boolean insetsPending) throws RemoteException { 5379 5380 float appScale = mAttachInfo.mApplicationScale; 5381 boolean restore = false; 5382 if (params != null && mTranslator != null) { 5383 restore = true; 5384 params.backup(); 5385 mTranslator.translateWindowLayout(params); 5386 } 5387 if (params != null) { 5388 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5389 } 5390 mPendingConfiguration.seq = 0; 5391 //Log.d(TAG, ">>>>>> CALLING relayout"); 5392 if (params != null && mOrigWindowType != params.type) { 5393 // For compatibility with old apps, don't crash here. 5394 if (mTargetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5395 Slog.w(TAG, "Window type can not be changed after " 5396 + "the window is added; ignoring change of " + mView); 5397 params.type = mOrigWindowType; 5398 } 5399 } 5400 int relayoutResult = mWindowSession.relayout( 5401 mWindow, mSeq, params, 5402 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5403 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5404 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5405 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5406 mPendingStableInsets, mPendingOutsets, mPendingConfiguration, mSurface); 5407 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5408 if (restore) { 5409 params.restore(); 5410 } 5411 5412 if (mTranslator != null) { 5413 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5414 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5415 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5416 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5417 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5418 } 5419 return relayoutResult; 5420 } 5421 5422 /** 5423 * {@inheritDoc} 5424 */ 5425 @Override 5426 public void playSoundEffect(int effectId) { 5427 checkThread(); 5428 5429 try { 5430 final AudioManager audioManager = getAudioManager(); 5431 5432 switch (effectId) { 5433 case SoundEffectConstants.CLICK: 5434 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5435 return; 5436 case SoundEffectConstants.NAVIGATION_DOWN: 5437 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5438 return; 5439 case SoundEffectConstants.NAVIGATION_LEFT: 5440 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5441 return; 5442 case SoundEffectConstants.NAVIGATION_RIGHT: 5443 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5444 return; 5445 case SoundEffectConstants.NAVIGATION_UP: 5446 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5447 return; 5448 default: 5449 throw new IllegalArgumentException("unknown effect id " + effectId + 5450 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5451 } 5452 } catch (IllegalStateException e) { 5453 // Exception thrown by getAudioManager() when mView is null 5454 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5455 e.printStackTrace(); 5456 } 5457 } 5458 5459 /** 5460 * {@inheritDoc} 5461 */ 5462 @Override 5463 public boolean performHapticFeedback(int effectId, boolean always) { 5464 try { 5465 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5466 } catch (RemoteException e) { 5467 return false; 5468 } 5469 } 5470 5471 /** 5472 * {@inheritDoc} 5473 */ 5474 @Override 5475 public View focusSearch(View focused, int direction) { 5476 checkThread(); 5477 if (!(mView instanceof ViewGroup)) { 5478 return null; 5479 } 5480 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5481 } 5482 5483 public void debug() { 5484 mView.debug(); 5485 } 5486 5487 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5488 String innerPrefix = prefix + " "; 5489 writer.print(prefix); writer.println("ViewRoot:"); 5490 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5491 writer.print(" mRemoved="); writer.println(mRemoved); 5492 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5493 writer.println(mConsumeBatchedInputScheduled); 5494 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5495 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5496 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5497 writer.println(mPendingInputEventCount); 5498 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5499 writer.println(mProcessInputEventsScheduled); 5500 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5501 writer.print(mTraversalScheduled); 5502 if (mTraversalScheduled) { 5503 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5504 } else { 5505 writer.println(); 5506 } 5507 mFirstInputStage.dump(innerPrefix, writer); 5508 5509 mChoreographer.dump(prefix, writer); 5510 5511 writer.print(prefix); writer.println("View Hierarchy:"); 5512 dumpViewHierarchy(innerPrefix, writer, mView); 5513 } 5514 5515 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5516 writer.print(prefix); 5517 if (view == null) { 5518 writer.println("null"); 5519 return; 5520 } 5521 writer.println(view.toString()); 5522 if (!(view instanceof ViewGroup)) { 5523 return; 5524 } 5525 ViewGroup grp = (ViewGroup)view; 5526 final int N = grp.getChildCount(); 5527 if (N <= 0) { 5528 return; 5529 } 5530 prefix = prefix + " "; 5531 for (int i=0; i<N; i++) { 5532 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5533 } 5534 } 5535 5536 public void dumpGfxInfo(int[] info) { 5537 info[0] = info[1] = 0; 5538 if (mView != null) { 5539 getGfxInfo(mView, info); 5540 } 5541 } 5542 5543 private static void getGfxInfo(View view, int[] info) { 5544 RenderNode renderNode = view.mRenderNode; 5545 info[0]++; 5546 if (renderNode != null) { 5547 info[1] += renderNode.getDebugSize(); 5548 } 5549 5550 if (view instanceof ViewGroup) { 5551 ViewGroup group = (ViewGroup) view; 5552 5553 int count = group.getChildCount(); 5554 for (int i = 0; i < count; i++) { 5555 getGfxInfo(group.getChildAt(i), info); 5556 } 5557 } 5558 } 5559 5560 /** 5561 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5562 * @return True, request has been queued. False, request has been completed. 5563 */ 5564 boolean die(boolean immediate) { 5565 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5566 // done by dispatchDetachedFromWindow will cause havoc on return. 5567 if (immediate && !mIsInTraversal) { 5568 doDie(); 5569 return false; 5570 } 5571 5572 if (!mIsDrawing) { 5573 destroyHardwareRenderer(); 5574 } else { 5575 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5576 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5577 } 5578 mHandler.sendEmptyMessage(MSG_DIE); 5579 return true; 5580 } 5581 5582 void doDie() { 5583 checkThread(); 5584 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5585 synchronized (this) { 5586 if (mRemoved) { 5587 return; 5588 } 5589 mRemoved = true; 5590 if (mAdded) { 5591 dispatchDetachedFromWindow(); 5592 } 5593 5594 if (mAdded && !mFirst) { 5595 destroyHardwareRenderer(); 5596 5597 if (mView != null) { 5598 int viewVisibility = mView.getVisibility(); 5599 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5600 if (mWindowAttributesChanged || viewVisibilityChanged) { 5601 // If layout params have been changed, first give them 5602 // to the window manager to make sure it has the correct 5603 // animation info. 5604 try { 5605 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5606 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5607 mWindowSession.finishDrawing(mWindow); 5608 } 5609 } catch (RemoteException e) { 5610 } 5611 } 5612 5613 mSurface.release(); 5614 } 5615 } 5616 5617 mAdded = false; 5618 } 5619 WindowManagerGlobal.getInstance().doRemoveView(this); 5620 } 5621 5622 public void requestUpdateConfiguration(Configuration config) { 5623 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5624 mHandler.sendMessage(msg); 5625 } 5626 5627 public void loadSystemProperties() { 5628 mHandler.post(new Runnable() { 5629 @Override 5630 public void run() { 5631 // Profiling 5632 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5633 profileRendering(mAttachInfo.mHasWindowFocus); 5634 5635 // Hardware rendering 5636 if (mAttachInfo.mHardwareRenderer != null) { 5637 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5638 invalidate(); 5639 } 5640 } 5641 5642 // Layout debugging 5643 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5644 if (layout != mAttachInfo.mDebugLayout) { 5645 mAttachInfo.mDebugLayout = layout; 5646 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5647 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5648 } 5649 } 5650 } 5651 }); 5652 } 5653 5654 private void destroyHardwareRenderer() { 5655 HardwareRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5656 5657 if (hardwareRenderer != null) { 5658 if (mView != null) { 5659 hardwareRenderer.destroyHardwareResources(mView); 5660 } 5661 hardwareRenderer.destroy(); 5662 hardwareRenderer.setRequested(false); 5663 5664 mAttachInfo.mHardwareRenderer = null; 5665 mAttachInfo.mHardwareAccelerated = false; 5666 } 5667 } 5668 5669 public void dispatchFinishInputConnection(InputConnection connection) { 5670 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5671 mHandler.sendMessage(msg); 5672 } 5673 5674 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5675 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 5676 Configuration newConfig, Rect backDropFrame) { 5677 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5678 + " contentInsets=" + contentInsets.toShortString() 5679 + " visibleInsets=" + visibleInsets.toShortString() 5680 + " reportDraw=" + reportDraw 5681 + " backDropFrame=" + backDropFrame); 5682 5683 // Tell all listeners that we are resizing the window so that the chrome can get 5684 // updated as fast as possible on a separate thread, 5685 if (mDragResizing) { 5686 synchronized (mWindowCallbacks) { 5687 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 5688 mWindowCallbacks.get(i).onWindowSizeIsChanging(backDropFrame); 5689 } 5690 } 5691 } 5692 5693 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5694 if (mTranslator != null) { 5695 mTranslator.translateRectInScreenToAppWindow(frame); 5696 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5697 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5698 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5699 } 5700 SomeArgs args = SomeArgs.obtain(); 5701 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5702 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5703 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5704 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5705 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5706 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5707 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5708 args.arg7 = sameProcessCall ? new Rect(outsets) : outsets; 5709 args.arg8 = sameProcessCall ? new Rect(backDropFrame) : backDropFrame; 5710 msg.obj = args; 5711 mHandler.sendMessage(msg); 5712 } 5713 5714 public void dispatchMoved(int newX, int newY) { 5715 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5716 if (mTranslator != null) { 5717 PointF point = new PointF(newX, newY); 5718 mTranslator.translatePointInScreenToAppWindow(point); 5719 newX = (int) (point.x + 0.5); 5720 newY = (int) (point.y + 0.5); 5721 } 5722 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5723 mHandler.sendMessage(msg); 5724 } 5725 5726 /** 5727 * Represents a pending input event that is waiting in a queue. 5728 * 5729 * Input events are processed in serial order by the timestamp specified by 5730 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5731 * one input event to the application at a time and waits for the application 5732 * to finish handling it before delivering the next one. 5733 * 5734 * However, because the application or IME can synthesize and inject multiple 5735 * key events at a time without going through the input dispatcher, we end up 5736 * needing a queue on the application's side. 5737 */ 5738 private static final class QueuedInputEvent { 5739 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5740 public static final int FLAG_DEFERRED = 1 << 1; 5741 public static final int FLAG_FINISHED = 1 << 2; 5742 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5743 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5744 public static final int FLAG_UNHANDLED = 1 << 5; 5745 5746 public QueuedInputEvent mNext; 5747 5748 public InputEvent mEvent; 5749 public InputEventReceiver mReceiver; 5750 public int mFlags; 5751 5752 public boolean shouldSkipIme() { 5753 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5754 return true; 5755 } 5756 return mEvent instanceof MotionEvent 5757 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5758 } 5759 5760 public boolean shouldSendToSynthesizer() { 5761 if ((mFlags & FLAG_UNHANDLED) != 0) { 5762 return true; 5763 } 5764 5765 return false; 5766 } 5767 5768 @Override 5769 public String toString() { 5770 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5771 boolean hasPrevious = false; 5772 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5773 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5774 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5775 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5776 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5777 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5778 if (!hasPrevious) { 5779 sb.append("0"); 5780 } 5781 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5782 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5783 sb.append(", mEvent=" + mEvent + "}"); 5784 return sb.toString(); 5785 } 5786 5787 private boolean flagToString(String name, int flag, 5788 boolean hasPrevious, StringBuilder sb) { 5789 if ((mFlags & flag) != 0) { 5790 if (hasPrevious) { 5791 sb.append("|"); 5792 } 5793 sb.append(name); 5794 return true; 5795 } 5796 return hasPrevious; 5797 } 5798 } 5799 5800 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5801 InputEventReceiver receiver, int flags) { 5802 QueuedInputEvent q = mQueuedInputEventPool; 5803 if (q != null) { 5804 mQueuedInputEventPoolSize -= 1; 5805 mQueuedInputEventPool = q.mNext; 5806 q.mNext = null; 5807 } else { 5808 q = new QueuedInputEvent(); 5809 } 5810 5811 q.mEvent = event; 5812 q.mReceiver = receiver; 5813 q.mFlags = flags; 5814 return q; 5815 } 5816 5817 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5818 q.mEvent = null; 5819 q.mReceiver = null; 5820 5821 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5822 mQueuedInputEventPoolSize += 1; 5823 q.mNext = mQueuedInputEventPool; 5824 mQueuedInputEventPool = q; 5825 } 5826 } 5827 5828 void enqueueInputEvent(InputEvent event) { 5829 enqueueInputEvent(event, null, 0, false); 5830 } 5831 5832 void enqueueInputEvent(InputEvent event, 5833 InputEventReceiver receiver, int flags, boolean processImmediately) { 5834 adjustInputEventForCompatibility(event); 5835 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5836 5837 // Always enqueue the input event in order, regardless of its time stamp. 5838 // We do this because the application or the IME may inject key events 5839 // in response to touch events and we want to ensure that the injected keys 5840 // are processed in the order they were received and we cannot trust that 5841 // the time stamp of injected events are monotonic. 5842 QueuedInputEvent last = mPendingInputEventTail; 5843 if (last == null) { 5844 mPendingInputEventHead = q; 5845 mPendingInputEventTail = q; 5846 } else { 5847 last.mNext = q; 5848 mPendingInputEventTail = q; 5849 } 5850 mPendingInputEventCount += 1; 5851 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5852 mPendingInputEventCount); 5853 5854 if (processImmediately) { 5855 doProcessInputEvents(); 5856 } else { 5857 scheduleProcessInputEvents(); 5858 } 5859 } 5860 5861 private void scheduleProcessInputEvents() { 5862 if (!mProcessInputEventsScheduled) { 5863 mProcessInputEventsScheduled = true; 5864 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5865 msg.setAsynchronous(true); 5866 mHandler.sendMessage(msg); 5867 } 5868 } 5869 5870 void doProcessInputEvents() { 5871 // Deliver all pending input events in the queue. 5872 while (mPendingInputEventHead != null) { 5873 QueuedInputEvent q = mPendingInputEventHead; 5874 mPendingInputEventHead = q.mNext; 5875 if (mPendingInputEventHead == null) { 5876 mPendingInputEventTail = null; 5877 } 5878 q.mNext = null; 5879 5880 mPendingInputEventCount -= 1; 5881 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5882 mPendingInputEventCount); 5883 5884 long eventTime = q.mEvent.getEventTimeNano(); 5885 long oldestEventTime = eventTime; 5886 if (q.mEvent instanceof MotionEvent) { 5887 MotionEvent me = (MotionEvent)q.mEvent; 5888 if (me.getHistorySize() > 0) { 5889 oldestEventTime = me.getHistoricalEventTimeNano(0); 5890 } 5891 } 5892 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 5893 5894 deliverInputEvent(q); 5895 } 5896 5897 // We are done processing all input events that we can process right now 5898 // so we can clear the pending flag immediately. 5899 if (mProcessInputEventsScheduled) { 5900 mProcessInputEventsScheduled = false; 5901 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5902 } 5903 } 5904 5905 private void deliverInputEvent(QueuedInputEvent q) { 5906 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5907 q.mEvent.getSequenceNumber()); 5908 if (mInputEventConsistencyVerifier != null) { 5909 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5910 } 5911 5912 InputStage stage; 5913 if (q.shouldSendToSynthesizer()) { 5914 stage = mSyntheticInputStage; 5915 } else { 5916 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5917 } 5918 5919 if (stage != null) { 5920 stage.deliver(q); 5921 } else { 5922 finishInputEvent(q); 5923 } 5924 } 5925 5926 private void finishInputEvent(QueuedInputEvent q) { 5927 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5928 q.mEvent.getSequenceNumber()); 5929 5930 if (q.mReceiver != null) { 5931 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5932 q.mReceiver.finishInputEvent(q.mEvent, handled); 5933 } else { 5934 q.mEvent.recycleIfNeededAfterDispatch(); 5935 } 5936 5937 recycleQueuedInputEvent(q); 5938 } 5939 5940 private void adjustInputEventForCompatibility(InputEvent e) { 5941 if (mTargetSdkVersion < Build.VERSION_CODES.M && e instanceof MotionEvent) { 5942 MotionEvent motion = (MotionEvent) e; 5943 final int mask = 5944 MotionEvent.BUTTON_STYLUS_PRIMARY | MotionEvent.BUTTON_STYLUS_SECONDARY; 5945 final int buttonState = motion.getButtonState(); 5946 final int compatButtonState = (buttonState & mask) >> 4; 5947 if (compatButtonState != 0) { 5948 motion.setButtonState(buttonState | compatButtonState); 5949 } 5950 } 5951 } 5952 5953 static boolean isTerminalInputEvent(InputEvent event) { 5954 if (event instanceof KeyEvent) { 5955 final KeyEvent keyEvent = (KeyEvent)event; 5956 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5957 } else { 5958 final MotionEvent motionEvent = (MotionEvent)event; 5959 final int action = motionEvent.getAction(); 5960 return action == MotionEvent.ACTION_UP 5961 || action == MotionEvent.ACTION_CANCEL 5962 || action == MotionEvent.ACTION_HOVER_EXIT; 5963 } 5964 } 5965 5966 void scheduleConsumeBatchedInput() { 5967 if (!mConsumeBatchedInputScheduled) { 5968 mConsumeBatchedInputScheduled = true; 5969 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5970 mConsumedBatchedInputRunnable, null); 5971 } 5972 } 5973 5974 void unscheduleConsumeBatchedInput() { 5975 if (mConsumeBatchedInputScheduled) { 5976 mConsumeBatchedInputScheduled = false; 5977 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5978 mConsumedBatchedInputRunnable, null); 5979 } 5980 } 5981 5982 void scheduleConsumeBatchedInputImmediately() { 5983 if (!mConsumeBatchedInputImmediatelyScheduled) { 5984 unscheduleConsumeBatchedInput(); 5985 mConsumeBatchedInputImmediatelyScheduled = true; 5986 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 5987 } 5988 } 5989 5990 void doConsumeBatchedInput(long frameTimeNanos) { 5991 if (mConsumeBatchedInputScheduled) { 5992 mConsumeBatchedInputScheduled = false; 5993 if (mInputEventReceiver != null) { 5994 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 5995 && frameTimeNanos != -1) { 5996 // If we consumed a batch here, we want to go ahead and schedule the 5997 // consumption of batched input events on the next frame. Otherwise, we would 5998 // wait until we have more input events pending and might get starved by other 5999 // things occurring in the process. If the frame time is -1, however, then 6000 // we're in a non-batching mode, so there's no need to schedule this. 6001 scheduleConsumeBatchedInput(); 6002 } 6003 } 6004 doProcessInputEvents(); 6005 } 6006 } 6007 6008 final class TraversalRunnable implements Runnable { 6009 @Override 6010 public void run() { 6011 doTraversal(); 6012 } 6013 } 6014 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 6015 6016 final class WindowInputEventReceiver extends InputEventReceiver { 6017 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 6018 super(inputChannel, looper); 6019 } 6020 6021 @Override 6022 public void onInputEvent(InputEvent event) { 6023 enqueueInputEvent(event, this, 0, true); 6024 } 6025 6026 @Override 6027 public void onBatchedInputEventPending() { 6028 if (mUnbufferedInputDispatch) { 6029 super.onBatchedInputEventPending(); 6030 } else { 6031 scheduleConsumeBatchedInput(); 6032 } 6033 } 6034 6035 @Override 6036 public void dispose() { 6037 unscheduleConsumeBatchedInput(); 6038 super.dispose(); 6039 } 6040 } 6041 WindowInputEventReceiver mInputEventReceiver; 6042 6043 final class ConsumeBatchedInputRunnable implements Runnable { 6044 @Override 6045 public void run() { 6046 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 6047 } 6048 } 6049 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 6050 new ConsumeBatchedInputRunnable(); 6051 boolean mConsumeBatchedInputScheduled; 6052 6053 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 6054 @Override 6055 public void run() { 6056 doConsumeBatchedInput(-1); 6057 } 6058 } 6059 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 6060 new ConsumeBatchedInputImmediatelyRunnable(); 6061 boolean mConsumeBatchedInputImmediatelyScheduled; 6062 6063 final class InvalidateOnAnimationRunnable implements Runnable { 6064 private boolean mPosted; 6065 private final ArrayList<View> mViews = new ArrayList<View>(); 6066 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 6067 new ArrayList<AttachInfo.InvalidateInfo>(); 6068 private View[] mTempViews; 6069 private AttachInfo.InvalidateInfo[] mTempViewRects; 6070 6071 public void addView(View view) { 6072 synchronized (this) { 6073 mViews.add(view); 6074 postIfNeededLocked(); 6075 } 6076 } 6077 6078 public void addViewRect(AttachInfo.InvalidateInfo info) { 6079 synchronized (this) { 6080 mViewRects.add(info); 6081 postIfNeededLocked(); 6082 } 6083 } 6084 6085 public void removeView(View view) { 6086 synchronized (this) { 6087 mViews.remove(view); 6088 6089 for (int i = mViewRects.size(); i-- > 0; ) { 6090 AttachInfo.InvalidateInfo info = mViewRects.get(i); 6091 if (info.target == view) { 6092 mViewRects.remove(i); 6093 info.recycle(); 6094 } 6095 } 6096 6097 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 6098 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 6099 mPosted = false; 6100 } 6101 } 6102 } 6103 6104 @Override 6105 public void run() { 6106 final int viewCount; 6107 final int viewRectCount; 6108 synchronized (this) { 6109 mPosted = false; 6110 6111 viewCount = mViews.size(); 6112 if (viewCount != 0) { 6113 mTempViews = mViews.toArray(mTempViews != null 6114 ? mTempViews : new View[viewCount]); 6115 mViews.clear(); 6116 } 6117 6118 viewRectCount = mViewRects.size(); 6119 if (viewRectCount != 0) { 6120 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6121 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6122 mViewRects.clear(); 6123 } 6124 } 6125 6126 for (int i = 0; i < viewCount; i++) { 6127 mTempViews[i].invalidate(); 6128 mTempViews[i] = null; 6129 } 6130 6131 for (int i = 0; i < viewRectCount; i++) { 6132 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6133 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6134 info.recycle(); 6135 } 6136 } 6137 6138 private void postIfNeededLocked() { 6139 if (!mPosted) { 6140 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6141 mPosted = true; 6142 } 6143 } 6144 } 6145 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6146 new InvalidateOnAnimationRunnable(); 6147 6148 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6149 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6150 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6151 } 6152 6153 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6154 long delayMilliseconds) { 6155 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6156 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6157 } 6158 6159 public void dispatchInvalidateOnAnimation(View view) { 6160 mInvalidateOnAnimationRunnable.addView(view); 6161 } 6162 6163 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6164 mInvalidateOnAnimationRunnable.addViewRect(info); 6165 } 6166 6167 public void cancelInvalidate(View view) { 6168 mHandler.removeMessages(MSG_INVALIDATE, view); 6169 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6170 // them to the pool 6171 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6172 mInvalidateOnAnimationRunnable.removeView(view); 6173 } 6174 6175 public void dispatchInputEvent(InputEvent event) { 6176 dispatchInputEvent(event, null); 6177 } 6178 6179 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6180 SomeArgs args = SomeArgs.obtain(); 6181 args.arg1 = event; 6182 args.arg2 = receiver; 6183 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6184 msg.setAsynchronous(true); 6185 mHandler.sendMessage(msg); 6186 } 6187 6188 public void synthesizeInputEvent(InputEvent event) { 6189 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6190 msg.setAsynchronous(true); 6191 mHandler.sendMessage(msg); 6192 } 6193 6194 public void dispatchKeyFromIme(KeyEvent event) { 6195 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6196 msg.setAsynchronous(true); 6197 mHandler.sendMessage(msg); 6198 } 6199 6200 /** 6201 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6202 * 6203 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6204 * passes in. 6205 */ 6206 public void dispatchUnhandledInputEvent(InputEvent event) { 6207 if (event instanceof MotionEvent) { 6208 event = MotionEvent.obtain((MotionEvent) event); 6209 } 6210 synthesizeInputEvent(event); 6211 } 6212 6213 public void dispatchAppVisibility(boolean visible) { 6214 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6215 msg.arg1 = visible ? 1 : 0; 6216 mHandler.sendMessage(msg); 6217 } 6218 6219 public void dispatchGetNewSurface() { 6220 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6221 mHandler.sendMessage(msg); 6222 } 6223 6224 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6225 Message msg = Message.obtain(); 6226 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6227 msg.arg1 = hasFocus ? 1 : 0; 6228 msg.arg2 = inTouchMode ? 1 : 0; 6229 mHandler.sendMessage(msg); 6230 } 6231 6232 public void dispatchWindowShown() { 6233 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6234 } 6235 6236 public void dispatchCloseSystemDialogs(String reason) { 6237 Message msg = Message.obtain(); 6238 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6239 msg.obj = reason; 6240 mHandler.sendMessage(msg); 6241 } 6242 6243 public void dispatchDragEvent(DragEvent event) { 6244 final int what; 6245 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6246 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6247 mHandler.removeMessages(what); 6248 } else { 6249 what = MSG_DISPATCH_DRAG_EVENT; 6250 } 6251 Message msg = mHandler.obtainMessage(what, event); 6252 mHandler.sendMessage(msg); 6253 } 6254 6255 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6256 int localValue, int localChanges) { 6257 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6258 args.seq = seq; 6259 args.globalVisibility = globalVisibility; 6260 args.localValue = localValue; 6261 args.localChanges = localChanges; 6262 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6263 } 6264 6265 public void dispatchCheckFocus() { 6266 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6267 // This will result in a call to checkFocus() below. 6268 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6269 } 6270 } 6271 6272 /** 6273 * Post a callback to send a 6274 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6275 * This event is send at most once every 6276 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6277 */ 6278 private void postSendWindowContentChangedCallback(View source, int changeType) { 6279 if (mSendWindowContentChangedAccessibilityEvent == null) { 6280 mSendWindowContentChangedAccessibilityEvent = 6281 new SendWindowContentChangedAccessibilityEvent(); 6282 } 6283 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6284 } 6285 6286 /** 6287 * Remove a posted callback to send a 6288 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6289 */ 6290 private void removeSendWindowContentChangedCallback() { 6291 if (mSendWindowContentChangedAccessibilityEvent != null) { 6292 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6293 } 6294 } 6295 6296 @Override 6297 public boolean showContextMenuForChild(View originalView) { 6298 return false; 6299 } 6300 6301 @Override 6302 public boolean showContextMenuForChild(View originalView, float x, float y) { 6303 return false; 6304 } 6305 6306 @Override 6307 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6308 return null; 6309 } 6310 6311 @Override 6312 public ActionMode startActionModeForChild( 6313 View originalView, ActionMode.Callback callback, int type) { 6314 return null; 6315 } 6316 6317 @Override 6318 public void createContextMenu(ContextMenu menu) { 6319 } 6320 6321 @Override 6322 public void childDrawableStateChanged(View child) { 6323 } 6324 6325 @Override 6326 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6327 if (mView == null || mStopped || mPausedForTransition) { 6328 return false; 6329 } 6330 // Intercept accessibility focus events fired by virtual nodes to keep 6331 // track of accessibility focus position in such nodes. 6332 final int eventType = event.getEventType(); 6333 switch (eventType) { 6334 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6335 final long sourceNodeId = event.getSourceNodeId(); 6336 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6337 sourceNodeId); 6338 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6339 if (source != null) { 6340 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6341 if (provider != null) { 6342 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6343 sourceNodeId); 6344 final AccessibilityNodeInfo node; 6345 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6346 node = provider.createAccessibilityNodeInfo( 6347 AccessibilityNodeProvider.HOST_VIEW_ID); 6348 } else { 6349 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6350 } 6351 setAccessibilityFocus(source, node); 6352 } 6353 } 6354 } break; 6355 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6356 final long sourceNodeId = event.getSourceNodeId(); 6357 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6358 sourceNodeId); 6359 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6360 if (source != null) { 6361 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6362 if (provider != null) { 6363 setAccessibilityFocus(null, null); 6364 } 6365 } 6366 } break; 6367 6368 6369 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6370 handleWindowContentChangedEvent(event); 6371 } break; 6372 } 6373 mAccessibilityManager.sendAccessibilityEvent(event); 6374 return true; 6375 } 6376 6377 /** 6378 * Updates the focused virtual view, when necessary, in response to a 6379 * content changed event. 6380 * <p> 6381 * This is necessary to get updated bounds after a position change. 6382 * 6383 * @param event an accessibility event of type 6384 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} 6385 */ 6386 private void handleWindowContentChangedEvent(AccessibilityEvent event) { 6387 final View focusedHost = mAccessibilityFocusedHost; 6388 if (focusedHost == null || mAccessibilityFocusedVirtualView == null) { 6389 // No virtual view focused, nothing to do here. 6390 return; 6391 } 6392 6393 final AccessibilityNodeProvider provider = focusedHost.getAccessibilityNodeProvider(); 6394 if (provider == null) { 6395 // Error state: virtual view with no provider. Clear focus. 6396 mAccessibilityFocusedHost = null; 6397 mAccessibilityFocusedVirtualView = null; 6398 focusedHost.clearAccessibilityFocusNoCallbacks(); 6399 return; 6400 } 6401 6402 // We only care about change types that may affect the bounds of the 6403 // focused virtual view. 6404 final int changes = event.getContentChangeTypes(); 6405 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) == 0 6406 && changes != AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6407 return; 6408 } 6409 6410 final long eventSourceNodeId = event.getSourceNodeId(); 6411 final int changedViewId = AccessibilityNodeInfo.getAccessibilityViewId(eventSourceNodeId); 6412 6413 // Search up the tree for subtree containment. 6414 boolean hostInSubtree = false; 6415 View root = mAccessibilityFocusedHost; 6416 while (root != null && !hostInSubtree) { 6417 if (changedViewId == root.getAccessibilityViewId()) { 6418 hostInSubtree = true; 6419 } else { 6420 final ViewParent parent = root.getParent(); 6421 if (parent instanceof View) { 6422 root = (View) parent; 6423 } else { 6424 root = null; 6425 } 6426 } 6427 } 6428 6429 // We care only about changes in subtrees containing the host view. 6430 if (!hostInSubtree) { 6431 return; 6432 } 6433 6434 final long focusedSourceNodeId = mAccessibilityFocusedVirtualView.getSourceNodeId(); 6435 int focusedChildId = AccessibilityNodeInfo.getVirtualDescendantId(focusedSourceNodeId); 6436 if (focusedChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6437 // TODO: Should we clear the focused virtual view? 6438 focusedChildId = AccessibilityNodeProvider.HOST_VIEW_ID; 6439 } 6440 6441 // Refresh the node for the focused virtual view. 6442 final Rect oldBounds = mTempRect; 6443 mAccessibilityFocusedVirtualView.getBoundsInScreen(oldBounds); 6444 mAccessibilityFocusedVirtualView = provider.createAccessibilityNodeInfo(focusedChildId); 6445 if (mAccessibilityFocusedVirtualView == null) { 6446 // Error state: The node no longer exists. Clear focus. 6447 mAccessibilityFocusedHost = null; 6448 focusedHost.clearAccessibilityFocusNoCallbacks(); 6449 6450 // This will probably fail, but try to keep the provider's internal 6451 // state consistent by clearing focus. 6452 provider.performAction(focusedChildId, 6453 AccessibilityAction.ACTION_CLEAR_ACCESSIBILITY_FOCUS.getId(), null); 6454 invalidateRectOnScreen(oldBounds); 6455 } else { 6456 // The node was refreshed, invalidate bounds if necessary. 6457 final Rect newBounds = mAccessibilityFocusedVirtualView.getBoundsInScreen(); 6458 if (!oldBounds.equals(newBounds)) { 6459 oldBounds.union(newBounds); 6460 invalidateRectOnScreen(oldBounds); 6461 } 6462 } 6463 } 6464 6465 @Override 6466 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6467 postSendWindowContentChangedCallback(source, changeType); 6468 } 6469 6470 @Override 6471 public boolean canResolveLayoutDirection() { 6472 return true; 6473 } 6474 6475 @Override 6476 public boolean isLayoutDirectionResolved() { 6477 return true; 6478 } 6479 6480 @Override 6481 public int getLayoutDirection() { 6482 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6483 } 6484 6485 @Override 6486 public boolean canResolveTextDirection() { 6487 return true; 6488 } 6489 6490 @Override 6491 public boolean isTextDirectionResolved() { 6492 return true; 6493 } 6494 6495 @Override 6496 public int getTextDirection() { 6497 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6498 } 6499 6500 @Override 6501 public boolean canResolveTextAlignment() { 6502 return true; 6503 } 6504 6505 @Override 6506 public boolean isTextAlignmentResolved() { 6507 return true; 6508 } 6509 6510 @Override 6511 public int getTextAlignment() { 6512 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6513 } 6514 6515 private View getCommonPredecessor(View first, View second) { 6516 if (mTempHashSet == null) { 6517 mTempHashSet = new HashSet<View>(); 6518 } 6519 HashSet<View> seen = mTempHashSet; 6520 seen.clear(); 6521 View firstCurrent = first; 6522 while (firstCurrent != null) { 6523 seen.add(firstCurrent); 6524 ViewParent firstCurrentParent = firstCurrent.mParent; 6525 if (firstCurrentParent instanceof View) { 6526 firstCurrent = (View) firstCurrentParent; 6527 } else { 6528 firstCurrent = null; 6529 } 6530 } 6531 View secondCurrent = second; 6532 while (secondCurrent != null) { 6533 if (seen.contains(secondCurrent)) { 6534 seen.clear(); 6535 return secondCurrent; 6536 } 6537 ViewParent secondCurrentParent = secondCurrent.mParent; 6538 if (secondCurrentParent instanceof View) { 6539 secondCurrent = (View) secondCurrentParent; 6540 } else { 6541 secondCurrent = null; 6542 } 6543 } 6544 seen.clear(); 6545 return null; 6546 } 6547 6548 void checkThread() { 6549 if (mThread != Thread.currentThread()) { 6550 throw new CalledFromWrongThreadException( 6551 "Only the original thread that created a view hierarchy can touch its views."); 6552 } 6553 } 6554 6555 @Override 6556 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6557 // ViewAncestor never intercepts touch event, so this can be a no-op 6558 } 6559 6560 @Override 6561 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6562 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6563 if (rectangle != null) { 6564 mTempRect.set(rectangle); 6565 mTempRect.offset(0, -mCurScrollY); 6566 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6567 try { 6568 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6569 } catch (RemoteException re) { 6570 /* ignore */ 6571 } 6572 } 6573 return scrolled; 6574 } 6575 6576 @Override 6577 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6578 // Do nothing. 6579 } 6580 6581 @Override 6582 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6583 return false; 6584 } 6585 6586 @Override 6587 public void onStopNestedScroll(View target) { 6588 } 6589 6590 @Override 6591 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6592 } 6593 6594 @Override 6595 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6596 int dxUnconsumed, int dyUnconsumed) { 6597 } 6598 6599 @Override 6600 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6601 } 6602 6603 @Override 6604 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6605 return false; 6606 } 6607 6608 @Override 6609 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6610 return false; 6611 } 6612 6613 @Override 6614 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6615 return false; 6616 } 6617 6618 /** 6619 * Force the window to report its next draw. 6620 * <p> 6621 * This method is only supposed to be used to speed up the interaction from SystemUI and window 6622 * manager when waiting for the first frame to be drawn when turning on the screen. DO NOT USE 6623 * unless you fully understand this interaction. 6624 * @hide 6625 */ 6626 public void setReportNextDraw() { 6627 mReportNextDraw = true; 6628 invalidate(); 6629 } 6630 6631 void changeCanvasOpacity(boolean opaque) { 6632 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6633 if (mAttachInfo.mHardwareRenderer != null) { 6634 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6635 } 6636 } 6637 6638 long getNextFrameNumber() { 6639 long frameNumber = -1; 6640 if (mSurfaceHolder != null) { 6641 mSurfaceHolder.mSurfaceLock.lock(); 6642 } 6643 if (mSurface.isValid()) { 6644 frameNumber = mSurface.getNextFrameNumber(); 6645 } 6646 if (mSurfaceHolder != null) { 6647 mSurfaceHolder.mSurfaceLock.unlock(); 6648 } 6649 return frameNumber; 6650 } 6651 6652 class TakenSurfaceHolder extends BaseSurfaceHolder { 6653 @Override 6654 public boolean onAllowLockCanvas() { 6655 return mDrawingAllowed; 6656 } 6657 6658 @Override 6659 public void onRelayoutContainer() { 6660 // Not currently interesting -- from changing between fixed and layout size. 6661 } 6662 6663 @Override 6664 public void setFormat(int format) { 6665 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6666 } 6667 6668 @Override 6669 public void setType(int type) { 6670 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6671 } 6672 6673 @Override 6674 public void onUpdateSurface() { 6675 // We take care of format and type changes on our own. 6676 throw new IllegalStateException("Shouldn't be here"); 6677 } 6678 6679 @Override 6680 public boolean isCreating() { 6681 return mIsCreating; 6682 } 6683 6684 @Override 6685 public void setFixedSize(int width, int height) { 6686 throw new UnsupportedOperationException( 6687 "Currently only support sizing from layout"); 6688 } 6689 6690 @Override 6691 public void setKeepScreenOn(boolean screenOn) { 6692 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6693 } 6694 } 6695 6696 static class W extends IWindow.Stub { 6697 private final WeakReference<ViewRootImpl> mViewAncestor; 6698 private final IWindowSession mWindowSession; 6699 6700 W(ViewRootImpl viewAncestor) { 6701 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6702 mWindowSession = viewAncestor.mWindowSession; 6703 } 6704 6705 @Override 6706 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6707 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 6708 Configuration newConfig, Rect backDropFrame) { 6709 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6710 if (viewAncestor != null) { 6711 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6712 visibleInsets, stableInsets, outsets, reportDraw, newConfig, backDropFrame); 6713 } 6714 } 6715 6716 @Override 6717 public void moved(int newX, int newY) { 6718 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6719 if (viewAncestor != null) { 6720 viewAncestor.dispatchMoved(newX, newY); 6721 } 6722 } 6723 6724 @Override 6725 public void dispatchAppVisibility(boolean visible) { 6726 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6727 if (viewAncestor != null) { 6728 viewAncestor.dispatchAppVisibility(visible); 6729 } 6730 } 6731 6732 @Override 6733 public void dispatchGetNewSurface() { 6734 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6735 if (viewAncestor != null) { 6736 viewAncestor.dispatchGetNewSurface(); 6737 } 6738 } 6739 6740 @Override 6741 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6742 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6743 if (viewAncestor != null) { 6744 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6745 } 6746 } 6747 6748 private static int checkCallingPermission(String permission) { 6749 try { 6750 return ActivityManagerNative.getDefault().checkPermission( 6751 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6752 } catch (RemoteException e) { 6753 return PackageManager.PERMISSION_DENIED; 6754 } 6755 } 6756 6757 @Override 6758 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6759 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6760 if (viewAncestor != null) { 6761 final View view = viewAncestor.mView; 6762 if (view != null) { 6763 if (checkCallingPermission(Manifest.permission.DUMP) != 6764 PackageManager.PERMISSION_GRANTED) { 6765 throw new SecurityException("Insufficient permissions to invoke" 6766 + " executeCommand() from pid=" + Binder.getCallingPid() 6767 + ", uid=" + Binder.getCallingUid()); 6768 } 6769 6770 OutputStream clientStream = null; 6771 try { 6772 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6773 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6774 } catch (IOException e) { 6775 e.printStackTrace(); 6776 } finally { 6777 if (clientStream != null) { 6778 try { 6779 clientStream.close(); 6780 } catch (IOException e) { 6781 e.printStackTrace(); 6782 } 6783 } 6784 } 6785 } 6786 } 6787 } 6788 6789 @Override 6790 public void closeSystemDialogs(String reason) { 6791 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6792 if (viewAncestor != null) { 6793 viewAncestor.dispatchCloseSystemDialogs(reason); 6794 } 6795 } 6796 6797 @Override 6798 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6799 boolean sync) { 6800 if (sync) { 6801 try { 6802 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6803 } catch (RemoteException e) { 6804 } 6805 } 6806 } 6807 6808 @Override 6809 public void dispatchWallpaperCommand(String action, int x, int y, 6810 int z, Bundle extras, boolean sync) { 6811 if (sync) { 6812 try { 6813 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6814 } catch (RemoteException e) { 6815 } 6816 } 6817 } 6818 6819 /* Drag/drop */ 6820 @Override 6821 public void dispatchDragEvent(DragEvent event) { 6822 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6823 if (viewAncestor != null) { 6824 viewAncestor.dispatchDragEvent(event); 6825 } 6826 } 6827 6828 @Override 6829 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6830 int localValue, int localChanges) { 6831 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6832 if (viewAncestor != null) { 6833 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6834 localValue, localChanges); 6835 } 6836 } 6837 6838 @Override 6839 public void dispatchWindowShown() { 6840 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6841 if (viewAncestor != null) { 6842 viewAncestor.dispatchWindowShown(); 6843 } 6844 } 6845 } 6846 6847 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6848 public CalledFromWrongThreadException(String msg) { 6849 super(msg); 6850 } 6851 } 6852 6853 static HandlerActionQueue getRunQueue() { 6854 HandlerActionQueue rq = sRunQueues.get(); 6855 if (rq != null) { 6856 return rq; 6857 } 6858 rq = new HandlerActionQueue(); 6859 sRunQueues.set(rq); 6860 return rq; 6861 } 6862 6863 /** 6864 * Start a drag resizing which will inform all listeners that a window resize is taking place. 6865 */ 6866 private void startDragResizing(Rect initialBounds) { 6867 if (!mDragResizing) { 6868 mDragResizing = true; 6869 synchronized (mWindowCallbacks) { 6870 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 6871 mWindowCallbacks.get(i).onWindowDragResizeStart(initialBounds); 6872 } 6873 } 6874 mFullRedrawNeeded = true; 6875 } 6876 } 6877 6878 /** 6879 * End a drag resize which will inform all listeners that a window resize has ended. 6880 */ 6881 private void endDragResizing() { 6882 if (mDragResizing) { 6883 mDragResizing = false; 6884 synchronized (mWindowCallbacks) { 6885 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 6886 mWindowCallbacks.get(i).onWindowDragResizeEnd(); 6887 } 6888 } 6889 mFullRedrawNeeded = true; 6890 } 6891 } 6892 6893 private boolean updateContentDrawBounds() { 6894 boolean updated = false; 6895 synchronized (mWindowCallbacks) { 6896 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 6897 updated |= mWindowCallbacks.get(i).onContentDrawn( 6898 mWindowAttributes.surfaceInsets.left, 6899 mWindowAttributes.surfaceInsets.top, 6900 mWidth, mHeight); 6901 } 6902 } 6903 return updated | (mDragResizing && mReportNextDraw); 6904 } 6905 6906 private void requestDrawWindow() { 6907 if (mReportNextDraw) { 6908 mWindowDrawCountDown = new CountDownLatch(mWindowCallbacks.size()); 6909 } 6910 synchronized (mWindowCallbacks) { 6911 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 6912 mWindowCallbacks.get(i).onRequestDraw(mReportNextDraw); 6913 } 6914 } 6915 } 6916 6917 /** 6918 * Class for managing the accessibility interaction connection 6919 * based on the global accessibility state. 6920 */ 6921 final class AccessibilityInteractionConnectionManager 6922 implements AccessibilityStateChangeListener { 6923 @Override 6924 public void onAccessibilityStateChanged(boolean enabled) { 6925 if (enabled) { 6926 ensureConnection(); 6927 if (mAttachInfo.mHasWindowFocus) { 6928 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6929 View focusedView = mView.findFocus(); 6930 if (focusedView != null && focusedView != mView) { 6931 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6932 } 6933 } 6934 } else { 6935 ensureNoConnection(); 6936 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6937 } 6938 } 6939 6940 public void ensureConnection() { 6941 final boolean registered = 6942 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6943 if (!registered) { 6944 mAttachInfo.mAccessibilityWindowId = 6945 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6946 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6947 } 6948 } 6949 6950 public void ensureNoConnection() { 6951 final boolean registered = 6952 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6953 if (registered) { 6954 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6955 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6956 } 6957 } 6958 } 6959 6960 final class HighContrastTextManager implements HighTextContrastChangeListener { 6961 HighContrastTextManager() { 6962 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 6963 } 6964 @Override 6965 public void onHighTextContrastStateChanged(boolean enabled) { 6966 mAttachInfo.mHighContrastText = enabled; 6967 6968 // Destroy Displaylists so they can be recreated with high contrast recordings 6969 destroyHardwareResources(); 6970 6971 // Schedule redraw, which will rerecord + redraw all text 6972 invalidate(); 6973 } 6974 } 6975 6976 /** 6977 * This class is an interface this ViewAncestor provides to the 6978 * AccessibilityManagerService to the latter can interact with 6979 * the view hierarchy in this ViewAncestor. 6980 */ 6981 static final class AccessibilityInteractionConnection 6982 extends IAccessibilityInteractionConnection.Stub { 6983 private final WeakReference<ViewRootImpl> mViewRootImpl; 6984 6985 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6986 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6987 } 6988 6989 @Override 6990 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6991 Region interactiveRegion, int interactionId, 6992 IAccessibilityInteractionConnectionCallback callback, int flags, 6993 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6994 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6995 if (viewRootImpl != null && viewRootImpl.mView != null) { 6996 viewRootImpl.getAccessibilityInteractionController() 6997 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6998 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6999 interrogatingTid, spec); 7000 } else { 7001 // We cannot make the call and notify the caller so it does not wait. 7002 try { 7003 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7004 } catch (RemoteException re) { 7005 /* best effort - ignore */ 7006 } 7007 } 7008 } 7009 7010 @Override 7011 public void performAccessibilityAction(long accessibilityNodeId, int action, 7012 Bundle arguments, int interactionId, 7013 IAccessibilityInteractionConnectionCallback callback, int flags, 7014 int interrogatingPid, long interrogatingTid) { 7015 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7016 if (viewRootImpl != null && viewRootImpl.mView != null) { 7017 viewRootImpl.getAccessibilityInteractionController() 7018 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 7019 interactionId, callback, flags, interrogatingPid, interrogatingTid); 7020 } else { 7021 // We cannot make the call and notify the caller so it does not wait. 7022 try { 7023 callback.setPerformAccessibilityActionResult(false, interactionId); 7024 } catch (RemoteException re) { 7025 /* best effort - ignore */ 7026 } 7027 } 7028 } 7029 7030 @Override 7031 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 7032 String viewId, Region interactiveRegion, int interactionId, 7033 IAccessibilityInteractionConnectionCallback callback, int flags, 7034 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7035 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7036 if (viewRootImpl != null && viewRootImpl.mView != null) { 7037 viewRootImpl.getAccessibilityInteractionController() 7038 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 7039 viewId, interactiveRegion, interactionId, callback, flags, 7040 interrogatingPid, interrogatingTid, spec); 7041 } else { 7042 // We cannot make the call and notify the caller so it does not wait. 7043 try { 7044 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7045 } catch (RemoteException re) { 7046 /* best effort - ignore */ 7047 } 7048 } 7049 } 7050 7051 @Override 7052 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 7053 Region interactiveRegion, int interactionId, 7054 IAccessibilityInteractionConnectionCallback callback, int flags, 7055 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7056 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7057 if (viewRootImpl != null && viewRootImpl.mView != null) { 7058 viewRootImpl.getAccessibilityInteractionController() 7059 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 7060 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7061 interrogatingTid, spec); 7062 } else { 7063 // We cannot make the call and notify the caller so it does not wait. 7064 try { 7065 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7066 } catch (RemoteException re) { 7067 /* best effort - ignore */ 7068 } 7069 } 7070 } 7071 7072 @Override 7073 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 7074 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7075 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7076 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7077 if (viewRootImpl != null && viewRootImpl.mView != null) { 7078 viewRootImpl.getAccessibilityInteractionController() 7079 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 7080 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7081 spec); 7082 } else { 7083 // We cannot make the call and notify the caller so it does not wait. 7084 try { 7085 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7086 } catch (RemoteException re) { 7087 /* best effort - ignore */ 7088 } 7089 } 7090 } 7091 7092 @Override 7093 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 7094 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7095 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7096 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7097 if (viewRootImpl != null && viewRootImpl.mView != null) { 7098 viewRootImpl.getAccessibilityInteractionController() 7099 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 7100 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7101 spec); 7102 } else { 7103 // We cannot make the call and notify the caller so it does not wait. 7104 try { 7105 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7106 } catch (RemoteException re) { 7107 /* best effort - ignore */ 7108 } 7109 } 7110 } 7111 } 7112 7113 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 7114 private int mChangeTypes = 0; 7115 7116 public View mSource; 7117 public long mLastEventTimeMillis; 7118 7119 @Override 7120 public void run() { 7121 // The accessibility may be turned off while we were waiting so check again. 7122 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 7123 mLastEventTimeMillis = SystemClock.uptimeMillis(); 7124 AccessibilityEvent event = AccessibilityEvent.obtain(); 7125 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 7126 event.setContentChangeTypes(mChangeTypes); 7127 mSource.sendAccessibilityEventUnchecked(event); 7128 } else { 7129 mLastEventTimeMillis = 0; 7130 } 7131 // In any case reset to initial state. 7132 mSource.resetSubtreeAccessibilityStateChanged(); 7133 mSource = null; 7134 mChangeTypes = 0; 7135 } 7136 7137 public void runOrPost(View source, int changeType) { 7138 if (mSource != null) { 7139 // If there is no common predecessor, then mSource points to 7140 // a removed view, hence in this case always prefer the source. 7141 View predecessor = getCommonPredecessor(mSource, source); 7142 mSource = (predecessor != null) ? predecessor : source; 7143 mChangeTypes |= changeType; 7144 return; 7145 } 7146 mSource = source; 7147 mChangeTypes = changeType; 7148 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 7149 final long minEventIntevalMillis = 7150 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 7151 if (timeSinceLastMillis >= minEventIntevalMillis) { 7152 mSource.removeCallbacks(this); 7153 run(); 7154 } else { 7155 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 7156 } 7157 } 7158 } 7159} 7160