ViewRootImpl.java revision 8dbd9ad68248a921637c4b2b866e86854b5860f6
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 android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.Context; 25import android.content.pm.PackageManager; 26import android.content.res.CompatibilityInfo; 27import android.content.res.Configuration; 28import android.content.res.Resources; 29import android.graphics.Canvas; 30import android.graphics.Matrix; 31import android.graphics.PixelFormat; 32import android.graphics.Point; 33import android.graphics.PointF; 34import android.graphics.PorterDuff; 35import android.graphics.Rect; 36import android.graphics.Region; 37import android.graphics.drawable.Drawable; 38import android.hardware.display.DisplayManager; 39import android.hardware.display.DisplayManager.DisplayListener; 40import android.media.AudioManager; 41import android.os.Binder; 42import android.os.Build; 43import android.os.Bundle; 44import android.os.Debug; 45import android.os.Handler; 46import android.os.Looper; 47import android.os.Message; 48import android.os.ParcelFileDescriptor; 49import android.os.Process; 50import android.os.RemoteException; 51import android.os.SystemClock; 52import android.os.SystemProperties; 53import android.os.Trace; 54import android.util.AndroidRuntimeException; 55import android.util.DisplayMetrics; 56import android.util.Log; 57import android.util.Slog; 58import android.util.TimeUtils; 59import android.util.TypedValue; 60import android.view.Surface.OutOfResourcesException; 61import android.view.View.AttachInfo; 62import android.view.View.MeasureSpec; 63import android.view.accessibility.AccessibilityEvent; 64import android.view.accessibility.AccessibilityManager; 65import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 66import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 67import android.view.accessibility.AccessibilityNodeInfo; 68import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction; 69import android.view.accessibility.AccessibilityNodeProvider; 70import android.view.accessibility.IAccessibilityInteractionConnection; 71import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 72import android.view.animation.AccelerateDecelerateInterpolator; 73import android.view.animation.Interpolator; 74import android.view.inputmethod.InputConnection; 75import android.view.inputmethod.InputMethodManager; 76import android.view.WindowCallbacks; 77import android.widget.Scroller; 78 79import com.android.internal.R; 80import com.android.internal.os.SomeArgs; 81import com.android.internal.policy.PhoneFallbackEventHandler; 82import com.android.internal.view.BaseSurfaceHolder; 83import com.android.internal.view.RootViewSurfaceTaker; 84 85import java.io.FileDescriptor; 86import java.io.IOException; 87import java.io.OutputStream; 88import java.io.PrintWriter; 89import java.lang.ref.WeakReference; 90import java.util.ArrayList; 91import java.util.concurrent.CountDownLatch; 92import java.util.HashSet; 93 94/** 95 * The top of a view hierarchy, implementing the needed protocol between View 96 * and the WindowManager. This is for the most part an internal implementation 97 * detail of {@link WindowManagerGlobal}. 98 * 99 * {@hide} 100 */ 101@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 102public final class ViewRootImpl implements ViewParent, 103 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 104 private static final String TAG = "ViewRootImpl"; 105 private static final boolean DBG = false; 106 private static final boolean LOCAL_LOGV = false; 107 /** @noinspection PointlessBooleanExpression*/ 108 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 109 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 110 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 111 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 112 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 113 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 114 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 115 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 116 private static final boolean DEBUG_FPS = false; 117 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 118 119 /** 120 * Set to false if we do not want to use the multi threaded renderer. Note that by disabling 121 * this, WindowCallbacks will not fire. 122 */ 123 private static final boolean USE_MT_RENDERER = true; 124 125 /** 126 * Set this system property to true to force the view hierarchy to render 127 * at 60 Hz. This can be used to measure the potential framerate. 128 */ 129 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 130 131 // properties used by emulator to determine display shape 132 public static final String PROPERTY_EMULATOR_WIN_OUTSET_BOTTOM_PX = 133 "ro.emu.win_outset_bottom_px"; 134 135 /** 136 * Maximum time we allow the user to roll the trackball enough to generate 137 * a key event, before resetting the counters. 138 */ 139 static final int MAX_TRACKBALL_DELAY = 250; 140 141 static final ThreadLocal<HandlerActionQueue> sRunQueues = new ThreadLocal<HandlerActionQueue>(); 142 143 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList(); 144 static boolean sFirstDrawComplete = false; 145 146 static final ArrayList<ComponentCallbacks> sConfigCallbacks = new ArrayList(); 147 148 final ArrayList<WindowCallbacks> mWindowCallbacks = new ArrayList(); 149 final Context mContext; 150 final IWindowSession mWindowSession; 151 final Display mDisplay; 152 final DisplayManager mDisplayManager; 153 final String mBasePackageName; 154 155 final int[] mTmpLocation = new int[2]; 156 157 final TypedValue mTmpValue = new TypedValue(); 158 159 final Thread mThread; 160 161 final WindowLeaked mLocation; 162 163 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 164 165 final W mWindow; 166 167 final int mTargetSdkVersion; 168 169 int mSeq; 170 171 View mView; 172 173 View mAccessibilityFocusedHost; 174 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 175 176 int mViewVisibility; 177 boolean mAppVisible = true; 178 int mOrigWindowType = -1; 179 180 /** Whether the window had focus during the most recent traversal. */ 181 boolean mHadWindowFocus; 182 183 /** 184 * Whether the window lost focus during a previous traversal and has not 185 * yet gained it back. Used to determine whether a WINDOW_STATE_CHANGE 186 * accessibility events should be sent during traversal. 187 */ 188 boolean mLostWindowFocus; 189 190 // Set to true if the owner of this window is in the stopped state, 191 // so the window should no longer be active. 192 boolean mStopped = false; 193 194 // Set to true to stop input during an Activity Transition. 195 boolean mPausedForTransition = false; 196 197 boolean mLastInCompatMode = false; 198 199 SurfaceHolder.Callback2 mSurfaceHolderCallback; 200 BaseSurfaceHolder mSurfaceHolder; 201 boolean mIsCreating; 202 boolean mDrawingAllowed; 203 204 final Region mTransparentRegion; 205 final Region mPreviousTransparentRegion; 206 207 int mWidth; 208 int mHeight; 209 Rect mDirty; 210 boolean mIsAnimating; 211 212 private boolean mDragResizing; 213 private int mCanvasOffsetX; 214 private int mCanvasOffsetY; 215 216 CompatibilityInfo.Translator mTranslator; 217 218 final View.AttachInfo mAttachInfo; 219 InputChannel mInputChannel; 220 InputQueue.Callback mInputQueueCallback; 221 InputQueue mInputQueue; 222 FallbackEventHandler mFallbackEventHandler; 223 Choreographer mChoreographer; 224 225 final Rect mTempRect; // used in the transaction to not thrash the heap. 226 final Rect mVisRect; // used to retrieve visible rect of focused view. 227 228 boolean mTraversalScheduled; 229 int mTraversalBarrier; 230 boolean mWillDrawSoon; 231 /** Set to true while in performTraversals for detecting when die(true) is called from internal 232 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 233 boolean mIsInTraversal; 234 boolean mApplyInsetsRequested; 235 boolean mLayoutRequested; 236 boolean mFirst; 237 boolean mReportNextDraw; 238 boolean mFullRedrawNeeded; 239 boolean mNewSurfaceNeeded; 240 boolean mHasHadWindowFocus; 241 boolean mLastWasImTarget; 242 CountDownLatch mWindowDrawCountDown; 243 244 boolean mIsDrawing; 245 int mLastSystemUiVisibility; 246 int mClientWindowLayoutFlags; 247 boolean mLastOverscanRequested; 248 249 // Pool of queued input events. 250 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 251 private QueuedInputEvent mQueuedInputEventPool; 252 private int mQueuedInputEventPoolSize; 253 254 /* Input event queue. 255 * Pending input events are input events waiting to be delivered to the input stages 256 * and handled by the application. 257 */ 258 QueuedInputEvent mPendingInputEventHead; 259 QueuedInputEvent mPendingInputEventTail; 260 int mPendingInputEventCount; 261 boolean mProcessInputEventsScheduled; 262 boolean mUnbufferedInputDispatch; 263 String mPendingInputEventQueueLengthCounterName = "pq"; 264 265 InputStage mFirstInputStage; 266 InputStage mFirstPostImeInputStage; 267 InputStage mSyntheticInputStage; 268 269 boolean mWindowAttributesChanged = false; 270 int mWindowAttributesChangesFlag = 0; 271 272 // These can be accessed by any thread, must be protected with a lock. 273 // Surface can never be reassigned or cleared (use Surface.clear()). 274 final Surface mSurface = new Surface(); 275 276 boolean mAdded; 277 boolean mAddedTouchMode; 278 279 final DisplayAdjustments mDisplayAdjustments; 280 281 // These are accessed by multiple threads. 282 final Rect mWinFrame; // frame given by window manager. 283 284 final Rect mPendingOverscanInsets = new Rect(); 285 final Rect mPendingVisibleInsets = new Rect(); 286 final Rect mPendingStableInsets = new Rect(); 287 final Rect mPendingContentInsets = new Rect(); 288 final Rect mPendingOutsets = new Rect(); 289 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 290 = new ViewTreeObserver.InternalInsetsInfo(); 291 292 final Rect mDispatchContentInsets = new Rect(); 293 final Rect mDispatchStableInsets = new Rect(); 294 295 private WindowInsets mLastWindowInsets; 296 297 final Configuration mLastConfiguration = new Configuration(); 298 final Configuration mPendingConfiguration = new Configuration(); 299 300 boolean mScrollMayChange; 301 int mSoftInputMode; 302 WeakReference<View> mLastScrolledFocus; 303 int mScrollY; 304 int mCurScrollY; 305 Scroller mScroller; 306 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 307 private ArrayList<LayoutTransition> mPendingTransitions; 308 309 final ViewConfiguration mViewConfiguration; 310 311 /* Drag/drop */ 312 ClipDescription mDragDescription; 313 View mCurrentDragView; 314 volatile Object mLocalDragState; 315 final PointF mDragPoint = new PointF(); 316 final PointF mLastTouchPoint = new PointF(); 317 318 private boolean mProfileRendering; 319 private Choreographer.FrameCallback mRenderProfiler; 320 private boolean mRenderProfilingEnabled; 321 322 // Variables to track frames per second, enabled via DEBUG_FPS flag 323 private long mFpsStartTime = -1; 324 private long mFpsPrevTime = -1; 325 private int mFpsNumFrames; 326 327 /** 328 * see {@link #playSoundEffect(int)} 329 */ 330 AudioManager mAudioManager; 331 332 final AccessibilityManager mAccessibilityManager; 333 334 AccessibilityInteractionController mAccessibilityInteractionController; 335 336 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 337 HighContrastTextManager mHighContrastTextManager; 338 339 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 340 341 HashSet<View> mTempHashSet; 342 343 private final int mDensity; 344 private final int mNoncompatDensity; 345 346 private boolean mInLayout = false; 347 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 348 boolean mHandlingLayoutInLayoutRequest = false; 349 350 private int mViewLayoutDirectionInitial; 351 352 /** Set to true once doDie() has been called. */ 353 private boolean mRemoved; 354 355 /** 356 * Consistency verifier for debugging purposes. 357 */ 358 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 359 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 360 new InputEventConsistencyVerifier(this, 0) : null; 361 362 static final class SystemUiVisibilityInfo { 363 int seq; 364 int globalVisibility; 365 int localValue; 366 int localChanges; 367 } 368 369 public ViewRootImpl(Context context, Display display) { 370 mContext = context; 371 mWindowSession = WindowManagerGlobal.getWindowSession(); 372 mDisplay = display; 373 mBasePackageName = context.getBasePackageName(); 374 375 mDisplayAdjustments = display.getDisplayAdjustments(); 376 377 mThread = Thread.currentThread(); 378 mLocation = new WindowLeaked(null); 379 mLocation.fillInStackTrace(); 380 mWidth = -1; 381 mHeight = -1; 382 mDirty = new Rect(); 383 mTempRect = new Rect(); 384 mVisRect = new Rect(); 385 mWinFrame = new Rect(); 386 mWindow = new W(this); 387 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 388 mViewVisibility = View.GONE; 389 mTransparentRegion = new Region(); 390 mPreviousTransparentRegion = new Region(); 391 mFirst = true; // true for the first time the view is added 392 mAdded = false; 393 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 394 mAccessibilityManager = AccessibilityManager.getInstance(context); 395 mAccessibilityInteractionConnectionManager = 396 new AccessibilityInteractionConnectionManager(); 397 mAccessibilityManager.addAccessibilityStateChangeListener( 398 mAccessibilityInteractionConnectionManager); 399 mHighContrastTextManager = new HighContrastTextManager(); 400 mAccessibilityManager.addHighTextContrastStateChangeListener( 401 mHighContrastTextManager); 402 mViewConfiguration = ViewConfiguration.get(context); 403 mDensity = context.getResources().getDisplayMetrics().densityDpi; 404 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 405 mFallbackEventHandler = new PhoneFallbackEventHandler(context); 406 mChoreographer = Choreographer.getInstance(); 407 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 408 loadSystemProperties(); 409 } 410 411 public static void addFirstDrawHandler(Runnable callback) { 412 synchronized (sFirstDrawHandlers) { 413 if (!sFirstDrawComplete) { 414 sFirstDrawHandlers.add(callback); 415 } 416 } 417 } 418 419 public static void addConfigCallback(ComponentCallbacks callback) { 420 synchronized (sConfigCallbacks) { 421 sConfigCallbacks.add(callback); 422 } 423 } 424 425 public void addWindowCallbacks(WindowCallbacks callback) { 426 if (USE_MT_RENDERER) { 427 synchronized (mWindowCallbacks) { 428 mWindowCallbacks.add(callback); 429 } 430 } 431 } 432 433 public void removeWindowCallbacks(WindowCallbacks callback) { 434 if (USE_MT_RENDERER) { 435 synchronized (mWindowCallbacks) { 436 mWindowCallbacks.remove(callback); 437 } 438 } 439 } 440 441 public void reportDrawFinish() { 442 if (mWindowDrawCountDown != null) { 443 mWindowDrawCountDown.countDown(); 444 } 445 } 446 447 // FIXME for perf testing only 448 private boolean mProfile = false; 449 450 /** 451 * Call this to profile the next traversal call. 452 * FIXME for perf testing only. Remove eventually 453 */ 454 public void profile() { 455 mProfile = true; 456 } 457 458 /** 459 * Indicates whether we are in touch mode. Calling this method triggers an IPC 460 * call and should be avoided whenever possible. 461 * 462 * @return True, if the device is in touch mode, false otherwise. 463 * 464 * @hide 465 */ 466 static boolean isInTouchMode() { 467 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 468 if (windowSession != null) { 469 try { 470 return windowSession.getInTouchMode(); 471 } catch (RemoteException e) { 472 } 473 } 474 return false; 475 } 476 477 /** 478 * We have one child 479 */ 480 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 481 synchronized (this) { 482 if (mView == null) { 483 mView = view; 484 485 mAttachInfo.mDisplayState = mDisplay.getState(); 486 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 487 488 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 489 mFallbackEventHandler.setView(view); 490 mWindowAttributes.copyFrom(attrs); 491 if (mWindowAttributes.packageName == null) { 492 mWindowAttributes.packageName = mBasePackageName; 493 } 494 attrs = mWindowAttributes; 495 // Keep track of the actual window flags supplied by the client. 496 mClientWindowLayoutFlags = attrs.flags; 497 498 setAccessibilityFocus(null, null); 499 500 if (view instanceof RootViewSurfaceTaker) { 501 mSurfaceHolderCallback = 502 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 503 if (mSurfaceHolderCallback != null) { 504 mSurfaceHolder = new TakenSurfaceHolder(); 505 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 506 } 507 } 508 509 // Compute surface insets required to draw at specified Z value. 510 // TODO: Use real shadow insets for a constant max Z. 511 if (!attrs.hasManualSurfaceInsets) { 512 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 513 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 514 } 515 516 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 517 mTranslator = compatibilityInfo.getTranslator(); 518 519 // If the application owns the surface, don't enable hardware acceleration 520 if (mSurfaceHolder == null) { 521 enableHardwareAcceleration(attrs); 522 } 523 524 boolean restore = false; 525 if (mTranslator != null) { 526 mSurface.setCompatibilityTranslator(mTranslator); 527 restore = true; 528 attrs.backup(); 529 mTranslator.translateWindowLayout(attrs); 530 } 531 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 532 533 if (!compatibilityInfo.supportsScreen()) { 534 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 535 mLastInCompatMode = true; 536 } 537 538 mSoftInputMode = attrs.softInputMode; 539 mWindowAttributesChanged = true; 540 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 541 mAttachInfo.mRootView = view; 542 mAttachInfo.mScalingRequired = mTranslator != null; 543 mAttachInfo.mApplicationScale = 544 mTranslator == null ? 1.0f : mTranslator.applicationScale; 545 if (panelParentView != null) { 546 mAttachInfo.mPanelParentWindowToken 547 = panelParentView.getApplicationWindowToken(); 548 } 549 mAdded = true; 550 int res; /* = WindowManagerImpl.ADD_OKAY; */ 551 552 // Schedule the first layout -before- adding to the window 553 // manager, to make sure we do the relayout before receiving 554 // any other events from the system. 555 requestLayout(); 556 if ((mWindowAttributes.inputFeatures 557 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 558 mInputChannel = new InputChannel(); 559 } 560 try { 561 mOrigWindowType = mWindowAttributes.type; 562 mAttachInfo.mRecomputeGlobalAttributes = true; 563 collectViewAttributes(); 564 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 565 getHostVisibility(), mDisplay.getDisplayId(), 566 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, 567 mAttachInfo.mOutsets, mInputChannel); 568 } catch (RemoteException e) { 569 mAdded = false; 570 mView = null; 571 mAttachInfo.mRootView = null; 572 mInputChannel = null; 573 mFallbackEventHandler.setView(null); 574 unscheduleTraversals(); 575 setAccessibilityFocus(null, null); 576 throw new RuntimeException("Adding window failed", e); 577 } finally { 578 if (restore) { 579 attrs.restore(); 580 } 581 } 582 583 if (mTranslator != null) { 584 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 585 } 586 mPendingOverscanInsets.set(0, 0, 0, 0); 587 mPendingContentInsets.set(mAttachInfo.mContentInsets); 588 mPendingStableInsets.set(mAttachInfo.mStableInsets); 589 mPendingVisibleInsets.set(0, 0, 0, 0); 590 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 591 if (res < WindowManagerGlobal.ADD_OKAY) { 592 mAttachInfo.mRootView = null; 593 mAdded = false; 594 mFallbackEventHandler.setView(null); 595 unscheduleTraversals(); 596 setAccessibilityFocus(null, null); 597 switch (res) { 598 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 599 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 600 throw new WindowManager.BadTokenException( 601 "Unable to add window -- token " + attrs.token 602 + " is not valid; is your activity running?"); 603 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 604 throw new WindowManager.BadTokenException( 605 "Unable to add window -- token " + attrs.token 606 + " is not for an application"); 607 case WindowManagerGlobal.ADD_APP_EXITING: 608 throw new WindowManager.BadTokenException( 609 "Unable to add window -- app for token " + attrs.token 610 + " is exiting"); 611 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 612 throw new WindowManager.BadTokenException( 613 "Unable to add window -- window " + mWindow 614 + " has already been added"); 615 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 616 // Silently ignore -- we would have just removed it 617 // right away, anyway. 618 return; 619 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 620 throw new WindowManager.BadTokenException("Unable to add window " 621 + mWindow + " -- another window of type " 622 + mWindowAttributes.type + " already exists"); 623 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 624 throw new WindowManager.BadTokenException("Unable to add window " 625 + mWindow + " -- permission denied for window type " 626 + mWindowAttributes.type); 627 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 628 throw new WindowManager.InvalidDisplayException("Unable to add window " 629 + mWindow + " -- the specified display can not be found"); 630 case WindowManagerGlobal.ADD_INVALID_TYPE: 631 throw new WindowManager.InvalidDisplayException("Unable to add window " 632 + mWindow + " -- the specified window type " 633 + mWindowAttributes.type + " is not valid"); 634 } 635 throw new RuntimeException( 636 "Unable to add window -- unknown error code " + res); 637 } 638 639 if (view instanceof RootViewSurfaceTaker) { 640 mInputQueueCallback = 641 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 642 } 643 if (mInputChannel != null) { 644 if (mInputQueueCallback != null) { 645 mInputQueue = new InputQueue(); 646 mInputQueueCallback.onInputQueueCreated(mInputQueue); 647 } 648 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 649 Looper.myLooper()); 650 } 651 652 view.assignParent(this); 653 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 654 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 655 656 if (mAccessibilityManager.isEnabled()) { 657 mAccessibilityInteractionConnectionManager.ensureConnection(); 658 } 659 660 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 661 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 662 } 663 664 // Set up the input pipeline. 665 CharSequence counterSuffix = attrs.getTitle(); 666 mSyntheticInputStage = new SyntheticInputStage(); 667 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 668 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 669 "aq:native-post-ime:" + counterSuffix); 670 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 671 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 672 "aq:ime:" + counterSuffix); 673 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 674 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 675 "aq:native-pre-ime:" + counterSuffix); 676 677 mFirstInputStage = nativePreImeStage; 678 mFirstPostImeInputStage = earlyPostImeStage; 679 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 680 } 681 } 682 } 683 684 /** Whether the window is in local focus mode or not */ 685 private boolean isInLocalFocusMode() { 686 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 687 } 688 689 public int getWindowFlags() { 690 return mWindowAttributes.flags; 691 } 692 693 public int getDisplayId() { 694 return mDisplay.getDisplayId(); 695 } 696 697 public CharSequence getTitle() { 698 return mWindowAttributes.getTitle(); 699 } 700 701 void destroyHardwareResources() { 702 if (mAttachInfo.mHardwareRenderer != null) { 703 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 704 mAttachInfo.mHardwareRenderer.destroy(); 705 } 706 } 707 708 public void detachFunctor(long functor) { 709 if (mAttachInfo.mHardwareRenderer != null) { 710 // Fence so that any pending invokeFunctor() messages will be processed 711 // before we return from detachFunctor. 712 mAttachInfo.mHardwareRenderer.stopDrawing(); 713 } 714 } 715 716 /** 717 * Schedules the functor for execution in either kModeProcess or 718 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 719 * 720 * @param functor The native functor to invoke 721 * @param waitForCompletion If true, this will not return until the functor 722 * has invoked. If false, the functor may be invoked 723 * asynchronously. 724 */ 725 public void invokeFunctor(long functor, boolean waitForCompletion) { 726 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 727 } 728 729 public void registerAnimatingRenderNode(RenderNode animator) { 730 if (mAttachInfo.mHardwareRenderer != null) { 731 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 732 } else { 733 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 734 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 735 } 736 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 737 } 738 } 739 740 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 741 mAttachInfo.mHardwareAccelerated = false; 742 mAttachInfo.mHardwareAccelerationRequested = false; 743 744 // Don't enable hardware acceleration when the application is in compatibility mode 745 if (mTranslator != null) return; 746 747 // Try to enable hardware acceleration if requested 748 final boolean hardwareAccelerated = 749 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 750 751 if (hardwareAccelerated) { 752 if (!HardwareRenderer.isAvailable()) { 753 return; 754 } 755 756 // Persistent processes (including the system) should not do 757 // accelerated rendering on low-end devices. In that case, 758 // sRendererDisabled will be set. In addition, the system process 759 // itself should never do accelerated rendering. In that case, both 760 // sRendererDisabled and sSystemRendererDisabled are set. When 761 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 762 // can be used by code on the system process to escape that and enable 763 // HW accelerated drawing. (This is basically for the lock screen.) 764 765 final boolean fakeHwAccelerated = (attrs.privateFlags & 766 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 767 final boolean forceHwAccelerated = (attrs.privateFlags & 768 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 769 770 if (fakeHwAccelerated) { 771 // This is exclusively for the preview windows the window manager 772 // shows for launching applications, so they will look more like 773 // the app being launched. 774 mAttachInfo.mHardwareAccelerationRequested = true; 775 } else if (!HardwareRenderer.sRendererDisabled 776 || (HardwareRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 777 if (mAttachInfo.mHardwareRenderer != null) { 778 mAttachInfo.mHardwareRenderer.destroy(); 779 } 780 781 final Rect insets = attrs.surfaceInsets; 782 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 783 || insets.top != 0 || insets.bottom != 0; 784 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 785 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(mContext, translucent); 786 if (mAttachInfo.mHardwareRenderer != null) { 787 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 788 mAttachInfo.mHardwareAccelerated = 789 mAttachInfo.mHardwareAccelerationRequested = true; 790 } 791 } 792 } 793 } 794 795 public View getView() { 796 return mView; 797 } 798 799 final WindowLeaked getLocation() { 800 return mLocation; 801 } 802 803 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 804 synchronized (this) { 805 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 806 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 807 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 808 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 809 final int oldSoftInputMode = mWindowAttributes.softInputMode; 810 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 811 812 // Keep track of the actual window flags supplied by the client. 813 mClientWindowLayoutFlags = attrs.flags; 814 815 // Preserve compatible window flag if exists. 816 final int compatibleWindowFlag = mWindowAttributes.privateFlags 817 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 818 819 // Transfer over system UI visibility values as they carry current state. 820 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 821 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 822 823 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 824 if ((mWindowAttributesChangesFlag 825 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 826 // Recompute system ui visibility. 827 mAttachInfo.mRecomputeGlobalAttributes = true; 828 } 829 if (mWindowAttributes.packageName == null) { 830 mWindowAttributes.packageName = mBasePackageName; 831 } 832 mWindowAttributes.privateFlags |= compatibleWindowFlag; 833 834 // Restore old surface insets. 835 mWindowAttributes.surfaceInsets.set( 836 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 837 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 838 839 applyKeepScreenOnFlag(mWindowAttributes); 840 841 if (newView) { 842 mSoftInputMode = attrs.softInputMode; 843 requestLayout(); 844 } 845 846 // Don't lose the mode we last auto-computed. 847 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 848 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 849 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 850 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 851 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 852 } 853 854 mWindowAttributesChanged = true; 855 scheduleTraversals(); 856 } 857 } 858 859 void handleAppVisibility(boolean visible) { 860 if (mAppVisible != visible) { 861 mAppVisible = visible; 862 scheduleTraversals(); 863 if (!mAppVisible) { 864 WindowManagerGlobal.trimForeground(); 865 } 866 } 867 } 868 869 void handleGetNewSurface() { 870 mNewSurfaceNeeded = true; 871 mFullRedrawNeeded = true; 872 scheduleTraversals(); 873 } 874 875 private final DisplayListener mDisplayListener = new DisplayListener() { 876 @Override 877 public void onDisplayChanged(int displayId) { 878 if (mView != null && mDisplay.getDisplayId() == displayId) { 879 final int oldDisplayState = mAttachInfo.mDisplayState; 880 final int newDisplayState = mDisplay.getState(); 881 if (oldDisplayState != newDisplayState) { 882 mAttachInfo.mDisplayState = newDisplayState; 883 pokeDrawLockIfNeeded(); 884 if (oldDisplayState != Display.STATE_UNKNOWN) { 885 final int oldScreenState = toViewScreenState(oldDisplayState); 886 final int newScreenState = toViewScreenState(newDisplayState); 887 if (oldScreenState != newScreenState) { 888 mView.dispatchScreenStateChanged(newScreenState); 889 } 890 if (oldDisplayState == Display.STATE_OFF) { 891 // Draw was suppressed so we need to for it to happen here. 892 mFullRedrawNeeded = true; 893 scheduleTraversals(); 894 } 895 } 896 } 897 } 898 } 899 900 @Override 901 public void onDisplayRemoved(int displayId) { 902 } 903 904 @Override 905 public void onDisplayAdded(int displayId) { 906 } 907 908 private int toViewScreenState(int displayState) { 909 return displayState == Display.STATE_OFF ? 910 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 911 } 912 }; 913 914 void pokeDrawLockIfNeeded() { 915 final int displayState = mAttachInfo.mDisplayState; 916 if (mView != null && mAdded && mTraversalScheduled 917 && (displayState == Display.STATE_DOZE 918 || displayState == Display.STATE_DOZE_SUSPEND)) { 919 try { 920 mWindowSession.pokeDrawLock(mWindow); 921 } catch (RemoteException ex) { 922 // System server died, oh well. 923 } 924 } 925 } 926 927 @Override 928 public void requestFitSystemWindows() { 929 checkThread(); 930 mApplyInsetsRequested = true; 931 scheduleTraversals(); 932 } 933 934 @Override 935 public void requestLayout() { 936 if (!mHandlingLayoutInLayoutRequest) { 937 checkThread(); 938 mLayoutRequested = true; 939 scheduleTraversals(); 940 } 941 } 942 943 @Override 944 public boolean isLayoutRequested() { 945 return mLayoutRequested; 946 } 947 948 void invalidate() { 949 mDirty.set(0, 0, mWidth, mHeight); 950 if (!mWillDrawSoon) { 951 scheduleTraversals(); 952 } 953 } 954 955 void invalidateWorld(View view) { 956 view.invalidate(); 957 if (view instanceof ViewGroup) { 958 ViewGroup parent = (ViewGroup) view; 959 for (int i = 0; i < parent.getChildCount(); i++) { 960 invalidateWorld(parent.getChildAt(i)); 961 } 962 } 963 } 964 965 @Override 966 public void invalidateChild(View child, Rect dirty) { 967 invalidateChildInParent(null, dirty); 968 } 969 970 @Override 971 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 972 checkThread(); 973 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 974 975 if (dirty == null) { 976 invalidate(); 977 return null; 978 } else if (dirty.isEmpty() && !mIsAnimating) { 979 return null; 980 } 981 982 if (mCurScrollY != 0 || mTranslator != null) { 983 mTempRect.set(dirty); 984 dirty = mTempRect; 985 if (mCurScrollY != 0) { 986 dirty.offset(0, -mCurScrollY); 987 } 988 if (mTranslator != null) { 989 mTranslator.translateRectInAppWindowToScreen(dirty); 990 } 991 if (mAttachInfo.mScalingRequired) { 992 dirty.inset(-1, -1); 993 } 994 } 995 996 invalidateRectOnScreen(dirty); 997 998 return null; 999 } 1000 1001 private void invalidateRectOnScreen(Rect dirty) { 1002 final Rect localDirty = mDirty; 1003 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 1004 mAttachInfo.mSetIgnoreDirtyState = true; 1005 mAttachInfo.mIgnoreDirtyState = true; 1006 } 1007 1008 // Add the new dirty rect to the current one 1009 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 1010 // Intersect with the bounds of the window to skip 1011 // updates that lie outside of the visible region 1012 final float appScale = mAttachInfo.mApplicationScale; 1013 final boolean intersected = localDirty.intersect(0, 0, 1014 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 1015 if (!intersected) { 1016 localDirty.setEmpty(); 1017 } 1018 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 1019 scheduleTraversals(); 1020 } 1021 } 1022 1023 void setWindowStopped(boolean stopped) { 1024 if (mStopped != stopped) { 1025 mStopped = stopped; 1026 if (!mStopped) { 1027 scheduleTraversals(); 1028 } 1029 } 1030 } 1031 1032 /** 1033 * Block the input events during an Activity Transition. The KEYCODE_BACK event is allowed 1034 * through to allow quick reversal of the Activity Transition. 1035 * 1036 * @param paused true to pause, false to resume. 1037 */ 1038 public void setPausedForTransition(boolean paused) { 1039 mPausedForTransition = paused; 1040 } 1041 1042 @Override 1043 public ViewParent getParent() { 1044 return null; 1045 } 1046 1047 @Override 1048 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 1049 if (child != mView) { 1050 throw new RuntimeException("child is not mine, honest!"); 1051 } 1052 // Note: don't apply scroll offset, because we want to know its 1053 // visibility in the virtual canvas being given to the view hierarchy. 1054 return r.intersect(0, 0, mWidth, mHeight); 1055 } 1056 1057 @Override 1058 public void bringChildToFront(View child) { 1059 } 1060 1061 int getHostVisibility() { 1062 return mAppVisible ? mView.getVisibility() : View.GONE; 1063 } 1064 1065 /** 1066 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1067 * This list will be cleared after the transitions on the list are start()'ed. These 1068 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1069 * happens during the layout phase of traversal, which we want to complete before any of the 1070 * animations are started (because those animations may side-effect properties that layout 1071 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1072 * to the list and it is started just prior to starting the drawing phase of traversal. 1073 * 1074 * @param transition The LayoutTransition to be started on the next traversal. 1075 * 1076 * @hide 1077 */ 1078 public void requestTransitionStart(LayoutTransition transition) { 1079 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1080 if (mPendingTransitions == null) { 1081 mPendingTransitions = new ArrayList<LayoutTransition>(); 1082 } 1083 mPendingTransitions.add(transition); 1084 } 1085 } 1086 1087 /** 1088 * Notifies the HardwareRenderer that a new frame will be coming soon. 1089 * Currently only {@link ThreadedRenderer} cares about this, and uses 1090 * this knowledge to adjust the scheduling of off-thread animations 1091 */ 1092 void notifyRendererOfFramePending() { 1093 if (mAttachInfo.mHardwareRenderer != null) { 1094 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1095 } 1096 } 1097 1098 void scheduleTraversals() { 1099 if (!mTraversalScheduled) { 1100 mTraversalScheduled = true; 1101 mTraversalBarrier = mHandler.getLooper().getQueue().postSyncBarrier(); 1102 mChoreographer.postCallback( 1103 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1104 if (!mUnbufferedInputDispatch) { 1105 scheduleConsumeBatchedInput(); 1106 } 1107 notifyRendererOfFramePending(); 1108 pokeDrawLockIfNeeded(); 1109 } 1110 } 1111 1112 void unscheduleTraversals() { 1113 if (mTraversalScheduled) { 1114 mTraversalScheduled = false; 1115 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1116 mChoreographer.removeCallbacks( 1117 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1118 } 1119 } 1120 1121 void doTraversal() { 1122 if (mTraversalScheduled) { 1123 mTraversalScheduled = false; 1124 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1125 1126 if (mProfile) { 1127 Debug.startMethodTracing("ViewAncestor"); 1128 } 1129 1130 performTraversals(); 1131 1132 if (mProfile) { 1133 Debug.stopMethodTracing(); 1134 mProfile = false; 1135 } 1136 } 1137 } 1138 1139 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1140 // Update window's global keep screen on flag: if a view has requested 1141 // that the screen be kept on, then it is always set; otherwise, it is 1142 // set to whatever the client last requested for the global state. 1143 if (mAttachInfo.mKeepScreenOn) { 1144 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1145 } else { 1146 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1147 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1148 } 1149 } 1150 1151 private boolean collectViewAttributes() { 1152 if (mAttachInfo.mRecomputeGlobalAttributes) { 1153 //Log.i(TAG, "Computing view hierarchy attributes!"); 1154 mAttachInfo.mRecomputeGlobalAttributes = false; 1155 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1156 mAttachInfo.mKeepScreenOn = false; 1157 mAttachInfo.mSystemUiVisibility = 0; 1158 mAttachInfo.mHasSystemUiListeners = false; 1159 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1160 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1161 WindowManager.LayoutParams params = mWindowAttributes; 1162 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1163 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1164 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1165 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1166 applyKeepScreenOnFlag(params); 1167 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1168 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1169 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1170 return true; 1171 } 1172 } 1173 return false; 1174 } 1175 1176 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1177 int vis = 0; 1178 // Translucent decor window flags imply stable system ui visibility. 1179 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1180 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1181 } 1182 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1183 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1184 } 1185 return vis; 1186 } 1187 1188 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1189 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1190 int childWidthMeasureSpec; 1191 int childHeightMeasureSpec; 1192 boolean windowSizeMayChange = false; 1193 1194 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1195 "Measuring " + host + " in display " + desiredWindowWidth 1196 + "x" + desiredWindowHeight + "..."); 1197 1198 boolean goodMeasure = false; 1199 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1200 // On large screens, we don't want to allow dialogs to just 1201 // stretch to fill the entire width of the screen to display 1202 // one line of text. First try doing the layout at a smaller 1203 // size to see if it will fit. 1204 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1205 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1206 int baseSize = 0; 1207 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1208 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1209 } 1210 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1211 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1212 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1213 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1214 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1215 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1216 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1217 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1218 goodMeasure = true; 1219 } else { 1220 // Didn't fit in that size... try expanding a bit. 1221 baseSize = (baseSize+desiredWindowWidth)/2; 1222 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1223 + baseSize); 1224 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 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 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1230 goodMeasure = true; 1231 } 1232 } 1233 } 1234 } 1235 1236 if (!goodMeasure) { 1237 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1238 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1239 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1240 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1241 windowSizeMayChange = true; 1242 } 1243 } 1244 1245 if (DBG) { 1246 System.out.println("======================================"); 1247 System.out.println("performTraversals -- after measure"); 1248 host.debug(); 1249 } 1250 1251 return windowSizeMayChange; 1252 } 1253 1254 /** 1255 * Modifies the input matrix such that it maps view-local coordinates to 1256 * on-screen coordinates. 1257 * 1258 * @param m input matrix to modify 1259 */ 1260 void transformMatrixToGlobal(Matrix m) { 1261 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1262 } 1263 1264 /** 1265 * Modifies the input matrix such that it maps on-screen coordinates to 1266 * view-local coordinates. 1267 * 1268 * @param m input matrix to modify 1269 */ 1270 void transformMatrixToLocal(Matrix m) { 1271 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1272 } 1273 1274 /* package */ WindowInsets getWindowInsets(boolean forceConstruct) { 1275 if (mLastWindowInsets == null || forceConstruct) { 1276 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1277 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1278 Rect contentInsets = mDispatchContentInsets; 1279 Rect stableInsets = mDispatchStableInsets; 1280 // For dispatch we preserve old logic, but for direct requests from Views we allow to 1281 // immediately use pending insets. 1282 if (!forceConstruct 1283 && (!mPendingContentInsets.equals(contentInsets) || 1284 !mPendingStableInsets.equals(stableInsets))) { 1285 contentInsets = mPendingContentInsets; 1286 stableInsets = mPendingStableInsets; 1287 } 1288 Rect outsets = mAttachInfo.mOutsets; 1289 if (outsets.left > 0 || outsets.top > 0 || outsets.right > 0 || outsets.bottom > 0) { 1290 contentInsets = new Rect(contentInsets.left + outsets.left, 1291 contentInsets.top + outsets.top, contentInsets.right + outsets.right, 1292 contentInsets.bottom + outsets.bottom); 1293 } 1294 mLastWindowInsets = new WindowInsets(contentInsets, 1295 null /* windowDecorInsets */, stableInsets, 1296 mContext.getResources().getConfiguration().isScreenRound()); 1297 } 1298 return mLastWindowInsets; 1299 } 1300 1301 void dispatchApplyInsets(View host) { 1302 host.dispatchApplyWindowInsets(getWindowInsets(true /* forceConstruct */)); 1303 } 1304 1305 private void performTraversals() { 1306 // cache mView since it is used so much below... 1307 final View host = mView; 1308 1309 if (DBG) { 1310 System.out.println("======================================"); 1311 System.out.println("performTraversals"); 1312 host.debug(); 1313 } 1314 1315 if (host == null || !mAdded) 1316 return; 1317 1318 mIsInTraversal = true; 1319 mWillDrawSoon = true; 1320 boolean windowSizeMayChange = false; 1321 boolean newSurface = false; 1322 boolean surfaceChanged = false; 1323 WindowManager.LayoutParams lp = mWindowAttributes; 1324 1325 int desiredWindowWidth; 1326 int desiredWindowHeight; 1327 1328 final int viewVisibility = getHostVisibility(); 1329 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1330 || mNewSurfaceNeeded; 1331 1332 WindowManager.LayoutParams params = null; 1333 if (mWindowAttributesChanged) { 1334 mWindowAttributesChanged = false; 1335 surfaceChanged = true; 1336 params = lp; 1337 } 1338 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1339 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1340 params = lp; 1341 mFullRedrawNeeded = true; 1342 mLayoutRequested = true; 1343 if (mLastInCompatMode) { 1344 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1345 mLastInCompatMode = false; 1346 } else { 1347 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1348 mLastInCompatMode = true; 1349 } 1350 } 1351 1352 mWindowAttributesChangesFlag = 0; 1353 1354 Rect frame = mWinFrame; 1355 if (mFirst) { 1356 mFullRedrawNeeded = true; 1357 mLayoutRequested = true; 1358 1359 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1360 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1361 // NOTE -- system code, won't try to do compat mode. 1362 Point size = new Point(); 1363 mDisplay.getRealSize(size); 1364 desiredWindowWidth = size.x; 1365 desiredWindowHeight = size.y; 1366 } else { 1367 DisplayMetrics packageMetrics = 1368 mView.getContext().getResources().getDisplayMetrics(); 1369 desiredWindowWidth = packageMetrics.widthPixels; 1370 desiredWindowHeight = packageMetrics.heightPixels; 1371 } 1372 1373 // We used to use the following condition to choose 32 bits drawing caches: 1374 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1375 // However, windows are now always 32 bits by default, so choose 32 bits 1376 mAttachInfo.mUse32BitDrawingCache = true; 1377 mAttachInfo.mHasWindowFocus = false; 1378 mAttachInfo.mWindowVisibility = viewVisibility; 1379 mAttachInfo.mRecomputeGlobalAttributes = false; 1380 viewVisibilityChanged = false; 1381 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1382 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1383 // Set the layout direction if it has not been set before (inherit is the default) 1384 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1385 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1386 } 1387 host.dispatchAttachedToWindow(mAttachInfo, 0); 1388 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1389 dispatchApplyInsets(host); 1390 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1391 1392 } else { 1393 desiredWindowWidth = frame.width(); 1394 desiredWindowHeight = frame.height(); 1395 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1396 if (DEBUG_ORIENTATION) Log.v(TAG, 1397 "View " + host + " resized to: " + frame); 1398 mFullRedrawNeeded = true; 1399 mLayoutRequested = true; 1400 windowSizeMayChange = true; 1401 } 1402 } 1403 1404 if (viewVisibilityChanged) { 1405 mAttachInfo.mWindowVisibility = viewVisibility; 1406 host.dispatchWindowVisibilityChanged(viewVisibility); 1407 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1408 endDragResizing(); 1409 destroyHardwareResources(); 1410 } 1411 if (viewVisibility == View.GONE) { 1412 // After making a window gone, we will count it as being 1413 // shown for the first time the next time it gets focus. 1414 mHasHadWindowFocus = false; 1415 } 1416 } 1417 1418 // Non-visible windows can't hold accessibility focus. 1419 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1420 host.clearAccessibilityFocus(); 1421 } 1422 1423 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1424 getRunQueue().executeActions(mAttachInfo.mHandler); 1425 1426 boolean insetsChanged = false; 1427 1428 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1429 if (layoutRequested) { 1430 1431 final Resources res = mView.getContext().getResources(); 1432 1433 if (mFirst) { 1434 // make sure touch mode code executes by setting cached value 1435 // to opposite of the added touch mode. 1436 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1437 ensureTouchModeLocally(mAddedTouchMode); 1438 } else { 1439 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1440 insetsChanged = true; 1441 } 1442 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1443 insetsChanged = true; 1444 } 1445 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1446 insetsChanged = true; 1447 } 1448 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1449 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1450 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1451 + mAttachInfo.mVisibleInsets); 1452 } 1453 if (!mPendingOutsets.equals(mAttachInfo.mOutsets)) { 1454 insetsChanged = true; 1455 } 1456 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1457 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1458 windowSizeMayChange = true; 1459 1460 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1461 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1462 // NOTE -- system code, won't try to do compat mode. 1463 Point size = new Point(); 1464 mDisplay.getRealSize(size); 1465 desiredWindowWidth = size.x; 1466 desiredWindowHeight = size.y; 1467 } else { 1468 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1469 desiredWindowWidth = packageMetrics.widthPixels; 1470 desiredWindowHeight = packageMetrics.heightPixels; 1471 } 1472 } 1473 } 1474 1475 // Ask host how big it wants to be 1476 windowSizeMayChange |= measureHierarchy(host, lp, res, 1477 desiredWindowWidth, desiredWindowHeight); 1478 } 1479 1480 if (collectViewAttributes()) { 1481 params = lp; 1482 } 1483 if (mAttachInfo.mForceReportNewAttributes) { 1484 mAttachInfo.mForceReportNewAttributes = false; 1485 params = lp; 1486 } 1487 1488 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1489 mAttachInfo.mViewVisibilityChanged = false; 1490 int resizeMode = mSoftInputMode & 1491 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1492 // If we are in auto resize mode, then we need to determine 1493 // what mode to use now. 1494 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1495 final int N = mAttachInfo.mScrollContainers.size(); 1496 for (int i=0; i<N; i++) { 1497 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1498 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1499 } 1500 } 1501 if (resizeMode == 0) { 1502 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1503 } 1504 if ((lp.softInputMode & 1505 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1506 lp.softInputMode = (lp.softInputMode & 1507 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1508 resizeMode; 1509 params = lp; 1510 } 1511 } 1512 } 1513 1514 if (params != null) { 1515 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1516 if (!PixelFormat.formatHasAlpha(params.format)) { 1517 params.format = PixelFormat.TRANSLUCENT; 1518 } 1519 } 1520 mAttachInfo.mOverscanRequested = (params.flags 1521 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1522 } 1523 1524 if (mApplyInsetsRequested) { 1525 mApplyInsetsRequested = false; 1526 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1527 dispatchApplyInsets(host); 1528 if (mLayoutRequested) { 1529 // Short-circuit catching a new layout request here, so 1530 // we don't need to go through two layout passes when things 1531 // change due to fitting system windows, which can happen a lot. 1532 windowSizeMayChange |= measureHierarchy(host, lp, 1533 mView.getContext().getResources(), 1534 desiredWindowWidth, desiredWindowHeight); 1535 } 1536 } 1537 1538 if (layoutRequested) { 1539 // Clear this now, so that if anything requests a layout in the 1540 // rest of this function we will catch it and re-run a full 1541 // layout pass. 1542 mLayoutRequested = false; 1543 } 1544 1545 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1546 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1547 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1548 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1549 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1550 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1551 windowShouldResize |= mDragResizing; 1552 1553 // Determine whether to compute insets. 1554 // If there are no inset listeners remaining then we may still need to compute 1555 // insets in case the old insets were non-empty and must be reset. 1556 final boolean computesInternalInsets = 1557 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1558 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1559 1560 boolean insetsPending = false; 1561 int relayoutResult = 0; 1562 1563 boolean isViewVisible = viewVisibility == View.VISIBLE; 1564 if (mFirst || windowShouldResize || insetsChanged || 1565 viewVisibilityChanged || params != null) { 1566 1567 if (isViewVisible) { 1568 // If this window is giving internal insets to the window 1569 // manager, and it is being added or changing its visibility, 1570 // then we want to first give the window manager "fake" 1571 // insets to cause it to effectively ignore the content of 1572 // the window during layout. This avoids it briefly causing 1573 // other windows to resize/move based on the raw frame of the 1574 // window, waiting until we can finish laying out this window 1575 // and get back to the window manager with the ultimately 1576 // computed insets. 1577 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1578 } 1579 1580 if (mSurfaceHolder != null) { 1581 mSurfaceHolder.mSurfaceLock.lock(); 1582 mDrawingAllowed = true; 1583 } 1584 1585 boolean hwInitialized = false; 1586 boolean contentInsetsChanged = false; 1587 boolean hadSurface = mSurface.isValid(); 1588 1589 try { 1590 if (DEBUG_LAYOUT) { 1591 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1592 host.getMeasuredHeight() + ", params=" + params); 1593 } 1594 1595 if (mAttachInfo.mHardwareRenderer != null) { 1596 // relayoutWindow may decide to destroy mSurface. As that decision 1597 // happens in WindowManager service, we need to be defensive here 1598 // and stop using the surface in case it gets destroyed. 1599 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1600 // Animations were running so we need to push a frame 1601 // to resume them 1602 mDirty.set(0, 0, mWidth, mHeight); 1603 } 1604 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1605 } 1606 final int surfaceGenerationId = mSurface.getGenerationId(); 1607 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1608 1609 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1610 + " overscan=" + mPendingOverscanInsets.toShortString() 1611 + " content=" + mPendingContentInsets.toShortString() 1612 + " visible=" + mPendingVisibleInsets.toShortString() 1613 + " visible=" + mPendingStableInsets.toShortString() 1614 + " outsets=" + mPendingOutsets.toShortString() 1615 + " surface=" + mSurface); 1616 1617 if (mPendingConfiguration.seq != 0) { 1618 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1619 + mPendingConfiguration); 1620 updateConfiguration(mPendingConfiguration, !mFirst); 1621 mPendingConfiguration.seq = 0; 1622 } 1623 1624 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1625 mAttachInfo.mOverscanInsets); 1626 contentInsetsChanged = !mPendingContentInsets.equals( 1627 mAttachInfo.mContentInsets); 1628 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1629 mAttachInfo.mVisibleInsets); 1630 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1631 mAttachInfo.mStableInsets); 1632 final boolean outsetsChanged = !mPendingOutsets.equals(mAttachInfo.mOutsets); 1633 if (contentInsetsChanged) { 1634 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1635 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1636 + mAttachInfo.mContentInsets); 1637 } 1638 if (overscanInsetsChanged) { 1639 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1640 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1641 + mAttachInfo.mOverscanInsets); 1642 // Need to relayout with content insets. 1643 contentInsetsChanged = true; 1644 } 1645 if (stableInsetsChanged) { 1646 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1647 if (DEBUG_LAYOUT) Log.v(TAG, "Decor insets changing to: " 1648 + mAttachInfo.mStableInsets); 1649 // Need to relayout with content insets. 1650 contentInsetsChanged = true; 1651 } 1652 if (contentInsetsChanged || mLastSystemUiVisibility != 1653 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1654 || mLastOverscanRequested != mAttachInfo.mOverscanRequested 1655 || outsetsChanged) { 1656 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1657 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1658 mAttachInfo.mOutsets.set(mPendingOutsets); 1659 mApplyInsetsRequested = false; 1660 dispatchApplyInsets(host); 1661 } 1662 if (visibleInsetsChanged) { 1663 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1664 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1665 + mAttachInfo.mVisibleInsets); 1666 } 1667 1668 if (!hadSurface) { 1669 if (mSurface.isValid()) { 1670 // If we are creating a new surface, then we need to 1671 // completely redraw it. Also, when we get to the 1672 // point of drawing it we will hold off and schedule 1673 // a new traversal instead. This is so we can tell the 1674 // window manager about all of the windows being displayed 1675 // before actually drawing them, so it can display then 1676 // all at once. 1677 newSurface = true; 1678 mFullRedrawNeeded = true; 1679 mPreviousTransparentRegion.setEmpty(); 1680 1681 // Only initialize up-front if transparent regions are not 1682 // requested, otherwise defer to see if the entire window 1683 // will be transparent 1684 if (mAttachInfo.mHardwareRenderer != null) { 1685 try { 1686 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1687 mSurface); 1688 if (hwInitialized && (host.mPrivateFlags 1689 & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) == 0) { 1690 // Don't pre-allocate if transparent regions 1691 // are requested as they may not be needed 1692 mSurface.allocateBuffers(); 1693 } 1694 } catch (OutOfResourcesException e) { 1695 handleOutOfResourcesException(e); 1696 return; 1697 } 1698 } 1699 } 1700 } else if (!mSurface.isValid()) { 1701 // If the surface has been removed, then reset the scroll 1702 // positions. 1703 if (mLastScrolledFocus != null) { 1704 mLastScrolledFocus.clear(); 1705 } 1706 mScrollY = mCurScrollY = 0; 1707 if (mView instanceof RootViewSurfaceTaker) { 1708 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1709 } 1710 if (mScroller != null) { 1711 mScroller.abortAnimation(); 1712 } 1713 // Our surface is gone 1714 if (mAttachInfo.mHardwareRenderer != null && 1715 mAttachInfo.mHardwareRenderer.isEnabled()) { 1716 mAttachInfo.mHardwareRenderer.destroy(); 1717 } 1718 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1719 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1720 mFullRedrawNeeded = true; 1721 try { 1722 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1723 } catch (OutOfResourcesException e) { 1724 handleOutOfResourcesException(e); 1725 return; 1726 } 1727 } 1728 1729 final boolean dragResizing = (relayoutResult 1730 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING) != 0; 1731 if (mDragResizing != dragResizing) { 1732 if (dragResizing) { 1733 startDragResizing(frame); 1734 } else { 1735 // We shouldn't come here, but if we come we should end the resize. 1736 endDragResizing(); 1737 } 1738 } 1739 if (!USE_MT_RENDERER) { 1740 if (dragResizing) { 1741 mCanvasOffsetX = mWinFrame.left; 1742 mCanvasOffsetY = mWinFrame.top; 1743 } else { 1744 mCanvasOffsetX = mCanvasOffsetY = 0; 1745 } 1746 } 1747 } catch (RemoteException e) { 1748 } 1749 1750 if (DEBUG_ORIENTATION) Log.v( 1751 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1752 1753 mAttachInfo.mWindowLeft = frame.left; 1754 mAttachInfo.mWindowTop = frame.top; 1755 1756 // !!FIXME!! This next section handles the case where we did not get the 1757 // window size we asked for. We should avoid this by getting a maximum size from 1758 // the window session beforehand. 1759 if (mWidth != frame.width() || mHeight != frame.height()) { 1760 mWidth = frame.width(); 1761 mHeight = frame.height(); 1762 } 1763 1764 if (mSurfaceHolder != null) { 1765 // The app owns the surface; tell it about what is going on. 1766 if (mSurface.isValid()) { 1767 // XXX .copyFrom() doesn't work! 1768 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1769 mSurfaceHolder.mSurface = mSurface; 1770 } 1771 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1772 mSurfaceHolder.mSurfaceLock.unlock(); 1773 if (mSurface.isValid()) { 1774 if (!hadSurface) { 1775 mSurfaceHolder.ungetCallbacks(); 1776 1777 mIsCreating = true; 1778 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1779 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1780 if (callbacks != null) { 1781 for (SurfaceHolder.Callback c : callbacks) { 1782 c.surfaceCreated(mSurfaceHolder); 1783 } 1784 } 1785 surfaceChanged = true; 1786 } 1787 if (surfaceChanged) { 1788 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1789 lp.format, mWidth, mHeight); 1790 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1791 if (callbacks != null) { 1792 for (SurfaceHolder.Callback c : callbacks) { 1793 c.surfaceChanged(mSurfaceHolder, lp.format, 1794 mWidth, mHeight); 1795 } 1796 } 1797 } 1798 mIsCreating = false; 1799 } else if (hadSurface) { 1800 mSurfaceHolder.ungetCallbacks(); 1801 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1802 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1803 if (callbacks != null) { 1804 for (SurfaceHolder.Callback c : callbacks) { 1805 c.surfaceDestroyed(mSurfaceHolder); 1806 } 1807 } 1808 mSurfaceHolder.mSurfaceLock.lock(); 1809 try { 1810 mSurfaceHolder.mSurface = new Surface(); 1811 } finally { 1812 mSurfaceHolder.mSurfaceLock.unlock(); 1813 } 1814 } 1815 } 1816 1817 final HardwareRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 1818 if (hardwareRenderer != null && hardwareRenderer.isEnabled()) { 1819 if (hwInitialized 1820 || mWidth != hardwareRenderer.getWidth() 1821 || mHeight != hardwareRenderer.getHeight()) { 1822 hardwareRenderer.setup(mWidth, mHeight, mAttachInfo, 1823 mWindowAttributes.surfaceInsets); 1824 } 1825 } 1826 1827 if (!mStopped || mReportNextDraw) { 1828 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1829 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1830 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1831 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1832 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1833 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1834 1835 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1836 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1837 + " mHeight=" + mHeight 1838 + " measuredHeight=" + host.getMeasuredHeight() 1839 + " coveredInsetsChanged=" + contentInsetsChanged); 1840 1841 // Ask host how big it wants to be 1842 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1843 1844 // Implementation of weights from WindowManager.LayoutParams 1845 // We just grow the dimensions as needed and re-measure if 1846 // needs be 1847 int width = host.getMeasuredWidth(); 1848 int height = host.getMeasuredHeight(); 1849 boolean measureAgain = false; 1850 1851 if (lp.horizontalWeight > 0.0f) { 1852 width += (int) ((mWidth - width) * lp.horizontalWeight); 1853 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1854 MeasureSpec.EXACTLY); 1855 measureAgain = true; 1856 } 1857 if (lp.verticalWeight > 0.0f) { 1858 height += (int) ((mHeight - height) * lp.verticalWeight); 1859 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1860 MeasureSpec.EXACTLY); 1861 measureAgain = true; 1862 } 1863 1864 if (measureAgain) { 1865 if (DEBUG_LAYOUT) Log.v(TAG, 1866 "And hey let's measure once more: width=" + width 1867 + " height=" + height); 1868 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1869 } 1870 1871 layoutRequested = true; 1872 } 1873 } 1874 } else { 1875 // Not the first pass and no window/insets/visibility change but the window 1876 // may have moved and we need check that and if so to update the left and right 1877 // in the attach info. We translate only the window frame since on window move 1878 // the window manager tells us only for the new frame but the insets are the 1879 // same and we do not want to translate them more than once. 1880 1881 // TODO: Well, we are checking whether the frame has changed similarly 1882 // to how this is done for the insets. This is however incorrect since 1883 // the insets and the frame are translated. For example, the old frame 1884 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1885 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1886 // true since we are comparing a not translated value to a translated one. 1887 // This scenario is rare but we may want to fix that. 1888 1889 final boolean windowMoved = (mAttachInfo.mWindowLeft != frame.left 1890 || mAttachInfo.mWindowTop != frame.top); 1891 if (windowMoved) { 1892 if (mTranslator != null) { 1893 mTranslator.translateRectInScreenToAppWinFrame(frame); 1894 } 1895 mAttachInfo.mWindowLeft = frame.left; 1896 mAttachInfo.mWindowTop = frame.top; 1897 1898 // Update the light position for the new window offsets. 1899 if (mAttachInfo.mHardwareRenderer != null) { 1900 mAttachInfo.mHardwareRenderer.setLightCenter(mAttachInfo); 1901 } 1902 } 1903 } 1904 1905 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 1906 boolean triggerGlobalLayoutListener = didLayout 1907 || mAttachInfo.mRecomputeGlobalAttributes; 1908 if (didLayout) { 1909 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1910 1911 // By this point all views have been sized and positioned 1912 // We can compute the transparent area 1913 1914 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1915 // start out transparent 1916 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1917 host.getLocationInWindow(mTmpLocation); 1918 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1919 mTmpLocation[0] + host.mRight - host.mLeft, 1920 mTmpLocation[1] + host.mBottom - host.mTop); 1921 1922 host.gatherTransparentRegion(mTransparentRegion); 1923 if (mTranslator != null) { 1924 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1925 } 1926 1927 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1928 mPreviousTransparentRegion.set(mTransparentRegion); 1929 mFullRedrawNeeded = true; 1930 // reconfigure window manager 1931 try { 1932 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1933 } catch (RemoteException e) { 1934 } 1935 } 1936 } 1937 1938 if (DBG) { 1939 System.out.println("======================================"); 1940 System.out.println("performTraversals -- after setFrame"); 1941 host.debug(); 1942 } 1943 } 1944 1945 if (triggerGlobalLayoutListener) { 1946 mAttachInfo.mRecomputeGlobalAttributes = false; 1947 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1948 } 1949 1950 if (computesInternalInsets) { 1951 // Clear the original insets. 1952 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 1953 insets.reset(); 1954 1955 // Compute new insets in place. 1956 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1957 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1958 1959 // Tell the window manager. 1960 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1961 mLastGivenInsets.set(insets); 1962 1963 // Translate insets to screen coordinates if needed. 1964 final Rect contentInsets; 1965 final Rect visibleInsets; 1966 final Region touchableRegion; 1967 if (mTranslator != null) { 1968 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1969 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1970 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1971 } else { 1972 contentInsets = insets.contentInsets; 1973 visibleInsets = insets.visibleInsets; 1974 touchableRegion = insets.touchableRegion; 1975 } 1976 1977 try { 1978 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1979 contentInsets, visibleInsets, touchableRegion); 1980 } catch (RemoteException e) { 1981 } 1982 } 1983 } 1984 1985 if (mFirst) { 1986 // handle first focus request 1987 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1988 + mView.hasFocus()); 1989 if (mView != null) { 1990 if (!mView.hasFocus()) { 1991 mView.requestFocus(View.FOCUS_FORWARD); 1992 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1993 + mView.findFocus()); 1994 } else { 1995 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1996 + mView.findFocus()); 1997 } 1998 } 1999 } 2000 2001 final boolean changedVisibility = (viewVisibilityChanged || mFirst) && isViewVisible; 2002 final boolean hasWindowFocus = mAttachInfo.mHasWindowFocus && isViewVisible; 2003 final boolean regainedFocus = hasWindowFocus && mLostWindowFocus; 2004 if (regainedFocus) { 2005 mLostWindowFocus = false; 2006 } else if (!hasWindowFocus && mHadWindowFocus) { 2007 mLostWindowFocus = true; 2008 } 2009 2010 if (changedVisibility || regainedFocus) { 2011 host.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2012 } 2013 2014 mFirst = false; 2015 mWillDrawSoon = false; 2016 mNewSurfaceNeeded = false; 2017 mViewVisibility = viewVisibility; 2018 mHadWindowFocus = hasWindowFocus; 2019 2020 if (hasWindowFocus && !isInLocalFocusMode()) { 2021 final boolean imTarget = WindowManager.LayoutParams 2022 .mayUseInputMethod(mWindowAttributes.flags); 2023 if (imTarget != mLastWasImTarget) { 2024 mLastWasImTarget = imTarget; 2025 InputMethodManager imm = InputMethodManager.peekInstance(); 2026 if (imm != null && imTarget) { 2027 imm.onPreWindowFocus(mView, hasWindowFocus); 2028 imm.onPostWindowFocus(mView, mView.findFocus(), 2029 mWindowAttributes.softInputMode, 2030 !mHasHadWindowFocus, mWindowAttributes.flags); 2031 } 2032 } 2033 } 2034 2035 // Remember if we must report the next draw. 2036 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 2037 mReportNextDraw = true; 2038 } 2039 2040 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || !isViewVisible; 2041 2042 if (!cancelDraw && !newSurface) { 2043 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2044 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2045 mPendingTransitions.get(i).startChangingAnimations(); 2046 } 2047 mPendingTransitions.clear(); 2048 } 2049 2050 performDraw(); 2051 } else { 2052 if (isViewVisible) { 2053 // Try again 2054 scheduleTraversals(); 2055 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2056 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2057 mPendingTransitions.get(i).endChangingAnimations(); 2058 } 2059 mPendingTransitions.clear(); 2060 } 2061 } 2062 2063 mIsInTraversal = false; 2064 } 2065 2066 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2067 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 2068 try { 2069 if (!mWindowSession.outOfMemory(mWindow) && 2070 Process.myUid() != Process.SYSTEM_UID) { 2071 Slog.w(TAG, "No processes killed for memory; killing self"); 2072 Process.killProcess(Process.myPid()); 2073 } 2074 } catch (RemoteException ex) { 2075 } 2076 mLayoutRequested = true; // ask wm for a new surface next time. 2077 } 2078 2079 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2080 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2081 try { 2082 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2083 } finally { 2084 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2085 } 2086 } 2087 2088 /** 2089 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2090 * is currently undergoing a layout pass. 2091 * 2092 * @return whether the view hierarchy is currently undergoing a layout pass 2093 */ 2094 boolean isInLayout() { 2095 return mInLayout; 2096 } 2097 2098 /** 2099 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2100 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2101 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2102 * all children in that container hierarchy are measured and laid out at the end of the layout 2103 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2104 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2105 * we check all of those views to see if any still have pending layout requests, which 2106 * indicates that they were not correctly handled by their container hierarchy. If that is 2107 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2108 * to blank containers, and force a second request/measure/layout pass in this frame. If 2109 * more requestLayout() calls are received during that second layout pass, we post those 2110 * requests to the next frame to avoid possible infinite loops. 2111 * 2112 * <p>The return value from this method indicates whether the request should proceed 2113 * (if it is a request during the first layout pass) or should be skipped and posted to the 2114 * next frame (if it is a request during the second layout pass).</p> 2115 * 2116 * @param view the view that requested the layout. 2117 * 2118 * @return true if request should proceed, false otherwise. 2119 */ 2120 boolean requestLayoutDuringLayout(final View view) { 2121 if (view.mParent == null || view.mAttachInfo == null) { 2122 // Would not normally trigger another layout, so just let it pass through as usual 2123 return true; 2124 } 2125 if (!mLayoutRequesters.contains(view)) { 2126 mLayoutRequesters.add(view); 2127 } 2128 if (!mHandlingLayoutInLayoutRequest) { 2129 // Let the request proceed normally; it will be processed in a second layout pass 2130 // if necessary 2131 return true; 2132 } else { 2133 // Don't let the request proceed during the second layout pass. 2134 // It will post to the next frame instead. 2135 return false; 2136 } 2137 } 2138 2139 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2140 int desiredWindowHeight) { 2141 mLayoutRequested = false; 2142 mScrollMayChange = true; 2143 mInLayout = true; 2144 2145 final View host = mView; 2146 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2147 Log.v(TAG, "Laying out " + host + " to (" + 2148 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2149 } 2150 2151 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2152 try { 2153 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2154 2155 mInLayout = false; 2156 int numViewsRequestingLayout = mLayoutRequesters.size(); 2157 if (numViewsRequestingLayout > 0) { 2158 // requestLayout() was called during layout. 2159 // If no layout-request flags are set on the requesting views, there is no problem. 2160 // If some requests are still pending, then we need to clear those flags and do 2161 // a full request/measure/layout pass to handle this situation. 2162 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2163 false); 2164 if (validLayoutRequesters != null) { 2165 // Set this flag to indicate that any further requests are happening during 2166 // the second pass, which may result in posting those requests to the next 2167 // frame instead 2168 mHandlingLayoutInLayoutRequest = true; 2169 2170 // Process fresh layout requests, then measure and layout 2171 int numValidRequests = validLayoutRequesters.size(); 2172 for (int i = 0; i < numValidRequests; ++i) { 2173 final View view = validLayoutRequesters.get(i); 2174 Log.w("View", "requestLayout() improperly called by " + view + 2175 " during layout: running second layout pass"); 2176 view.requestLayout(); 2177 } 2178 measureHierarchy(host, lp, mView.getContext().getResources(), 2179 desiredWindowWidth, desiredWindowHeight); 2180 mInLayout = true; 2181 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2182 2183 mHandlingLayoutInLayoutRequest = false; 2184 2185 // Check the valid requests again, this time without checking/clearing the 2186 // layout flags, since requests happening during the second pass get noop'd 2187 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2188 if (validLayoutRequesters != null) { 2189 final ArrayList<View> finalRequesters = validLayoutRequesters; 2190 // Post second-pass requests to the next frame 2191 getRunQueue().post(new Runnable() { 2192 @Override 2193 public void run() { 2194 int numValidRequests = finalRequesters.size(); 2195 for (int i = 0; i < numValidRequests; ++i) { 2196 final View view = finalRequesters.get(i); 2197 Log.w("View", "requestLayout() improperly called by " + view + 2198 " during second layout pass: posting in next frame"); 2199 view.requestLayout(); 2200 } 2201 } 2202 }); 2203 } 2204 } 2205 2206 } 2207 } finally { 2208 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2209 } 2210 mInLayout = false; 2211 } 2212 2213 /** 2214 * This method is called during layout when there have been calls to requestLayout() during 2215 * layout. It walks through the list of views that requested layout to determine which ones 2216 * still need it, based on visibility in the hierarchy and whether they have already been 2217 * handled (as is usually the case with ListView children). 2218 * 2219 * @param layoutRequesters The list of views that requested layout during layout 2220 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2221 * If so, the FORCE_LAYOUT flag was not set on requesters. 2222 * @return A list of the actual views that still need to be laid out. 2223 */ 2224 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2225 boolean secondLayoutRequests) { 2226 2227 int numViewsRequestingLayout = layoutRequesters.size(); 2228 ArrayList<View> validLayoutRequesters = null; 2229 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2230 View view = layoutRequesters.get(i); 2231 if (view != null && view.mAttachInfo != null && view.mParent != null && 2232 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2233 View.PFLAG_FORCE_LAYOUT)) { 2234 boolean gone = false; 2235 View parent = view; 2236 // Only trigger new requests for views in a non-GONE hierarchy 2237 while (parent != null) { 2238 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2239 gone = true; 2240 break; 2241 } 2242 if (parent.mParent instanceof View) { 2243 parent = (View) parent.mParent; 2244 } else { 2245 parent = null; 2246 } 2247 } 2248 if (!gone) { 2249 if (validLayoutRequesters == null) { 2250 validLayoutRequesters = new ArrayList<View>(); 2251 } 2252 validLayoutRequesters.add(view); 2253 } 2254 } 2255 } 2256 if (!secondLayoutRequests) { 2257 // If we're checking the layout flags, then we need to clean them up also 2258 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2259 View view = layoutRequesters.get(i); 2260 while (view != null && 2261 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2262 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2263 if (view.mParent instanceof View) { 2264 view = (View) view.mParent; 2265 } else { 2266 view = null; 2267 } 2268 } 2269 } 2270 } 2271 layoutRequesters.clear(); 2272 return validLayoutRequesters; 2273 } 2274 2275 @Override 2276 public void requestTransparentRegion(View child) { 2277 // the test below should not fail unless someone is messing with us 2278 checkThread(); 2279 if (mView == child) { 2280 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2281 // Need to make sure we re-evaluate the window attributes next 2282 // time around, to ensure the window has the correct format. 2283 mWindowAttributesChanged = true; 2284 mWindowAttributesChangesFlag = 0; 2285 requestLayout(); 2286 } 2287 } 2288 2289 /** 2290 * Figures out the measure spec for the root view in a window based on it's 2291 * layout params. 2292 * 2293 * @param windowSize 2294 * The available width or height of the window 2295 * 2296 * @param rootDimension 2297 * The layout params for one dimension (width or height) of the 2298 * window. 2299 * 2300 * @return The measure spec to use to measure the root view. 2301 */ 2302 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2303 int measureSpec; 2304 switch (rootDimension) { 2305 2306 case ViewGroup.LayoutParams.MATCH_PARENT: 2307 // Window can't resize. Force root view to be windowSize. 2308 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2309 break; 2310 case ViewGroup.LayoutParams.WRAP_CONTENT: 2311 // Window can resize. Set max size for root view. 2312 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2313 break; 2314 default: 2315 // Window wants to be an exact size. Force root view to be that size. 2316 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2317 break; 2318 } 2319 return measureSpec; 2320 } 2321 2322 int mHardwareXOffset; 2323 int mHardwareYOffset; 2324 2325 @Override 2326 public void onHardwarePreDraw(DisplayListCanvas canvas) { 2327 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2328 } 2329 2330 @Override 2331 public void onHardwarePostDraw(DisplayListCanvas canvas) { 2332 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2333 } 2334 2335 /** 2336 * @hide 2337 */ 2338 void outputDisplayList(View view) { 2339 view.mRenderNode.output(); 2340 if (mAttachInfo.mHardwareRenderer != null) { 2341 ((ThreadedRenderer)mAttachInfo.mHardwareRenderer).serializeDisplayListTree(); 2342 } 2343 } 2344 2345 /** 2346 * @see #PROPERTY_PROFILE_RENDERING 2347 */ 2348 private void profileRendering(boolean enabled) { 2349 if (mProfileRendering) { 2350 mRenderProfilingEnabled = enabled; 2351 2352 if (mRenderProfiler != null) { 2353 mChoreographer.removeFrameCallback(mRenderProfiler); 2354 } 2355 if (mRenderProfilingEnabled) { 2356 if (mRenderProfiler == null) { 2357 mRenderProfiler = new Choreographer.FrameCallback() { 2358 @Override 2359 public void doFrame(long frameTimeNanos) { 2360 mDirty.set(0, 0, mWidth, mHeight); 2361 scheduleTraversals(); 2362 if (mRenderProfilingEnabled) { 2363 mChoreographer.postFrameCallback(mRenderProfiler); 2364 } 2365 } 2366 }; 2367 } 2368 mChoreographer.postFrameCallback(mRenderProfiler); 2369 } else { 2370 mRenderProfiler = null; 2371 } 2372 } 2373 } 2374 2375 /** 2376 * Called from draw() when DEBUG_FPS is enabled 2377 */ 2378 private void trackFPS() { 2379 // Tracks frames per second drawn. First value in a series of draws may be bogus 2380 // because it down not account for the intervening idle time 2381 long nowTime = System.currentTimeMillis(); 2382 if (mFpsStartTime < 0) { 2383 mFpsStartTime = mFpsPrevTime = nowTime; 2384 mFpsNumFrames = 0; 2385 } else { 2386 ++mFpsNumFrames; 2387 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2388 long frameTime = nowTime - mFpsPrevTime; 2389 long totalTime = nowTime - mFpsStartTime; 2390 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2391 mFpsPrevTime = nowTime; 2392 if (totalTime > 1000) { 2393 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2394 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2395 mFpsStartTime = nowTime; 2396 mFpsNumFrames = 0; 2397 } 2398 } 2399 } 2400 2401 private void performDraw() { 2402 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2403 return; 2404 } 2405 2406 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2407 mFullRedrawNeeded = false; 2408 2409 mIsDrawing = true; 2410 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2411 try { 2412 draw(fullRedrawNeeded); 2413 } finally { 2414 mIsDrawing = false; 2415 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2416 } 2417 2418 // For whatever reason we didn't create a HardwareRenderer, end any 2419 // hardware animations that are now dangling 2420 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2421 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2422 for (int i = 0; i < count; i++) { 2423 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2424 } 2425 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2426 } 2427 2428 if (mReportNextDraw) { 2429 mReportNextDraw = false; 2430 2431 // if we're using multi-thread renderer, wait for the window frame draws 2432 if (mWindowDrawCountDown != null) { 2433 try { 2434 mWindowDrawCountDown.await(); 2435 } catch (InterruptedException e) { 2436 Log.e(TAG, "Window redraw count down interruped!"); 2437 } 2438 mWindowDrawCountDown = null; 2439 } 2440 2441 if (mAttachInfo.mHardwareRenderer != null) { 2442 mAttachInfo.mHardwareRenderer.fence(); 2443 } 2444 2445 if (LOCAL_LOGV) { 2446 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2447 } 2448 if (mSurfaceHolder != null && mSurface.isValid()) { 2449 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2450 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2451 if (callbacks != null) { 2452 for (SurfaceHolder.Callback c : callbacks) { 2453 if (c instanceof SurfaceHolder.Callback2) { 2454 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2455 mSurfaceHolder); 2456 } 2457 } 2458 } 2459 } 2460 try { 2461 mWindowSession.finishDrawing(mWindow); 2462 } catch (RemoteException e) { 2463 } 2464 } 2465 } 2466 2467 private void draw(boolean fullRedrawNeeded) { 2468 Surface surface = mSurface; 2469 if (!surface.isValid()) { 2470 return; 2471 } 2472 2473 if (DEBUG_FPS) { 2474 trackFPS(); 2475 } 2476 2477 if (!sFirstDrawComplete) { 2478 synchronized (sFirstDrawHandlers) { 2479 sFirstDrawComplete = true; 2480 final int count = sFirstDrawHandlers.size(); 2481 for (int i = 0; i< count; i++) { 2482 mHandler.post(sFirstDrawHandlers.get(i)); 2483 } 2484 } 2485 } 2486 2487 scrollToRectOrFocus(null, false); 2488 2489 if (mAttachInfo.mViewScrollChanged) { 2490 mAttachInfo.mViewScrollChanged = false; 2491 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2492 } 2493 2494 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2495 final int curScrollY; 2496 if (animating) { 2497 curScrollY = mScroller.getCurrY(); 2498 } else { 2499 curScrollY = mScrollY; 2500 } 2501 if (mCurScrollY != curScrollY) { 2502 mCurScrollY = curScrollY; 2503 fullRedrawNeeded = true; 2504 if (mView instanceof RootViewSurfaceTaker) { 2505 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2506 } 2507 } 2508 2509 final float appScale = mAttachInfo.mApplicationScale; 2510 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2511 2512 int resizeAlpha = 0; 2513 2514 final Rect dirty = mDirty; 2515 if (mSurfaceHolder != null) { 2516 // The app owns the surface, we won't draw. 2517 dirty.setEmpty(); 2518 if (animating && mScroller != null) { 2519 mScroller.abortAnimation(); 2520 } 2521 return; 2522 } 2523 2524 if (fullRedrawNeeded) { 2525 mAttachInfo.mIgnoreDirtyState = true; 2526 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2527 } 2528 2529 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2530 Log.v(TAG, "Draw " + mView + "/" 2531 + mWindowAttributes.getTitle() 2532 + ": dirty={" + dirty.left + "," + dirty.top 2533 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2534 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2535 appScale + ", width=" + mWidth + ", height=" + mHeight); 2536 } 2537 2538 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2539 2540 int xOffset = -mCanvasOffsetX; 2541 int yOffset = -mCanvasOffsetY + curScrollY; 2542 final WindowManager.LayoutParams params = mWindowAttributes; 2543 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2544 if (surfaceInsets != null) { 2545 xOffset -= surfaceInsets.left; 2546 yOffset -= surfaceInsets.top; 2547 2548 // Offset dirty rect for surface insets. 2549 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2550 } 2551 2552 boolean accessibilityFocusDirty = false; 2553 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2554 if (drawable != null) { 2555 final Rect bounds = mAttachInfo.mTmpInvalRect; 2556 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2557 if (!hasFocus) { 2558 bounds.setEmpty(); 2559 } 2560 if (!bounds.equals(drawable.getBounds())) { 2561 accessibilityFocusDirty = true; 2562 } 2563 } 2564 2565 mAttachInfo.mDrawingTime = 2566 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2567 2568 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2569 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2570 // If accessibility focus moved, always invalidate the root. 2571 boolean invalidateRoot = accessibilityFocusDirty; 2572 2573 // Draw with hardware renderer. 2574 mIsAnimating = false; 2575 2576 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2577 mHardwareYOffset = yOffset; 2578 mHardwareXOffset = xOffset; 2579 invalidateRoot = true; 2580 } 2581 2582 if (invalidateRoot) { 2583 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2584 } 2585 2586 dirty.setEmpty(); 2587 2588 // Stage the content drawn size now. It will be transferred to the renderer 2589 // shortly before the draw commands get send to the renderer. 2590 final boolean updated = updateContentDrawBounds(); 2591 2592 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2593 2594 if (updated) { 2595 requestDrawWindow(); 2596 } 2597 } else { 2598 // If we get here with a disabled & requested hardware renderer, something went 2599 // wrong (an invalidate posted right before we destroyed the hardware surface 2600 // for instance) so we should just bail out. Locking the surface with software 2601 // rendering at this point would lock it forever and prevent hardware renderer 2602 // from doing its job when it comes back. 2603 // Before we request a new frame we must however attempt to reinitiliaze the 2604 // hardware renderer if it's in requested state. This would happen after an 2605 // eglTerminate() for instance. 2606 if (mAttachInfo.mHardwareRenderer != null && 2607 !mAttachInfo.mHardwareRenderer.isEnabled() && 2608 mAttachInfo.mHardwareRenderer.isRequested()) { 2609 2610 try { 2611 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2612 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 2613 } catch (OutOfResourcesException e) { 2614 handleOutOfResourcesException(e); 2615 return; 2616 } 2617 2618 mFullRedrawNeeded = true; 2619 scheduleTraversals(); 2620 return; 2621 } 2622 2623 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2624 return; 2625 } 2626 } 2627 } 2628 2629 if (animating) { 2630 mFullRedrawNeeded = true; 2631 scheduleTraversals(); 2632 } 2633 } 2634 2635 /** 2636 * @return true if drawing was successful, false if an error occurred 2637 */ 2638 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2639 boolean scalingRequired, Rect dirty) { 2640 2641 // Draw with software renderer. 2642 final Canvas canvas; 2643 try { 2644 final int left = dirty.left; 2645 final int top = dirty.top; 2646 final int right = dirty.right; 2647 final int bottom = dirty.bottom; 2648 2649 canvas = mSurface.lockCanvas(dirty); 2650 2651 // The dirty rectangle can be modified by Surface.lockCanvas() 2652 //noinspection ConstantConditions 2653 if (left != dirty.left || top != dirty.top || right != dirty.right 2654 || bottom != dirty.bottom) { 2655 attachInfo.mIgnoreDirtyState = true; 2656 } 2657 2658 // TODO: Do this in native 2659 canvas.setDensity(mDensity); 2660 } catch (Surface.OutOfResourcesException e) { 2661 handleOutOfResourcesException(e); 2662 return false; 2663 } catch (IllegalArgumentException e) { 2664 Log.e(TAG, "Could not lock surface", e); 2665 // Don't assume this is due to out of memory, it could be 2666 // something else, and if it is something else then we could 2667 // kill stuff (or ourself) for no reason. 2668 mLayoutRequested = true; // ask wm for a new surface next time. 2669 return false; 2670 } 2671 2672 try { 2673 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2674 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2675 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2676 //canvas.drawARGB(255, 255, 0, 0); 2677 } 2678 2679 // If this bitmap's format includes an alpha channel, we 2680 // need to clear it before drawing so that the child will 2681 // properly re-composite its drawing on a transparent 2682 // background. This automatically respects the clip/dirty region 2683 // or 2684 // If we are applying an offset, we need to clear the area 2685 // where the offset doesn't appear to avoid having garbage 2686 // left in the blank areas. 2687 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2688 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2689 } 2690 2691 dirty.setEmpty(); 2692 mIsAnimating = false; 2693 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2694 2695 if (DEBUG_DRAW) { 2696 Context cxt = mView.getContext(); 2697 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2698 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2699 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2700 } 2701 try { 2702 canvas.translate(-xoff, -yoff); 2703 if (mTranslator != null) { 2704 mTranslator.translateCanvas(canvas); 2705 } 2706 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2707 attachInfo.mSetIgnoreDirtyState = false; 2708 2709 mView.draw(canvas); 2710 2711 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2712 } finally { 2713 if (!attachInfo.mSetIgnoreDirtyState) { 2714 // Only clear the flag if it was not set during the mView.draw() call 2715 attachInfo.mIgnoreDirtyState = false; 2716 } 2717 } 2718 } finally { 2719 try { 2720 surface.unlockCanvasAndPost(canvas); 2721 } catch (IllegalArgumentException e) { 2722 Log.e(TAG, "Could not unlock surface", e); 2723 mLayoutRequested = true; // ask wm for a new surface next time. 2724 //noinspection ReturnInsideFinallyBlock 2725 return false; 2726 } 2727 2728 if (LOCAL_LOGV) { 2729 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2730 } 2731 } 2732 return true; 2733 } 2734 2735 /** 2736 * We want to draw a highlight around the current accessibility focused. 2737 * Since adding a style for all possible view is not a viable option we 2738 * have this specialized drawing method. 2739 * 2740 * Note: We are doing this here to be able to draw the highlight for 2741 * virtual views in addition to real ones. 2742 * 2743 * @param canvas The canvas on which to draw. 2744 */ 2745 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2746 final Rect bounds = mAttachInfo.mTmpInvalRect; 2747 if (getAccessibilityFocusedRect(bounds)) { 2748 final Drawable drawable = getAccessibilityFocusedDrawable(); 2749 if (drawable != null) { 2750 drawable.setBounds(bounds); 2751 drawable.draw(canvas); 2752 } 2753 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2754 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2755 } 2756 } 2757 2758 private boolean getAccessibilityFocusedRect(Rect bounds) { 2759 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2760 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2761 return false; 2762 } 2763 2764 final View host = mAccessibilityFocusedHost; 2765 if (host == null || host.mAttachInfo == null) { 2766 return false; 2767 } 2768 2769 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2770 if (provider == null) { 2771 host.getBoundsOnScreen(bounds, true); 2772 } else if (mAccessibilityFocusedVirtualView != null) { 2773 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2774 } else { 2775 return false; 2776 } 2777 2778 // Transform the rect into window-relative coordinates. 2779 final AttachInfo attachInfo = mAttachInfo; 2780 bounds.offset(0, attachInfo.mViewRootImpl.mScrollY); 2781 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2782 if (!bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, 2783 attachInfo.mViewRootImpl.mHeight)) { 2784 // If no intersection, set bounds to empty. 2785 bounds.setEmpty(); 2786 } 2787 return !bounds.isEmpty(); 2788 } 2789 2790 private Drawable getAccessibilityFocusedDrawable() { 2791 // Lazily load the accessibility focus drawable. 2792 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2793 final TypedValue value = new TypedValue(); 2794 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2795 R.attr.accessibilityFocusedDrawable, value, true); 2796 if (resolved) { 2797 mAttachInfo.mAccessibilityFocusDrawable = 2798 mView.mContext.getDrawable(value.resourceId); 2799 } 2800 } 2801 return mAttachInfo.mAccessibilityFocusDrawable; 2802 } 2803 2804 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2805 final Rect ci = mAttachInfo.mContentInsets; 2806 final Rect vi = mAttachInfo.mVisibleInsets; 2807 int scrollY = 0; 2808 boolean handled = false; 2809 2810 if (vi.left > ci.left || vi.top > ci.top 2811 || vi.right > ci.right || vi.bottom > ci.bottom) { 2812 // We'll assume that we aren't going to change the scroll 2813 // offset, since we want to avoid that unless it is actually 2814 // going to make the focus visible... otherwise we scroll 2815 // all over the place. 2816 scrollY = mScrollY; 2817 // We can be called for two different situations: during a draw, 2818 // to update the scroll position if the focus has changed (in which 2819 // case 'rectangle' is null), or in response to a 2820 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2821 // is non-null and we just want to scroll to whatever that 2822 // rectangle is). 2823 final View focus = mView.findFocus(); 2824 if (focus == null) { 2825 return false; 2826 } 2827 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2828 if (focus != lastScrolledFocus) { 2829 // If the focus has changed, then ignore any requests to scroll 2830 // to a rectangle; first we want to make sure the entire focus 2831 // view is visible. 2832 rectangle = null; 2833 } 2834 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2835 + " rectangle=" + rectangle + " ci=" + ci 2836 + " vi=" + vi); 2837 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2838 // Optimization: if the focus hasn't changed since last 2839 // time, and no layout has happened, then just leave things 2840 // as they are. 2841 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2842 + mScrollY + " vi=" + vi.toShortString()); 2843 } else { 2844 // We need to determine if the currently focused view is 2845 // within the visible part of the window and, if not, apply 2846 // a pan so it can be seen. 2847 mLastScrolledFocus = new WeakReference<View>(focus); 2848 mScrollMayChange = false; 2849 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2850 // Try to find the rectangle from the focus view. 2851 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2852 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2853 + mView.getWidth() + " h=" + mView.getHeight() 2854 + " ci=" + ci.toShortString() 2855 + " vi=" + vi.toShortString()); 2856 if (rectangle == null) { 2857 focus.getFocusedRect(mTempRect); 2858 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2859 + ": focusRect=" + mTempRect.toShortString()); 2860 if (mView instanceof ViewGroup) { 2861 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2862 focus, mTempRect); 2863 } 2864 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2865 "Focus in window: focusRect=" 2866 + mTempRect.toShortString() 2867 + " visRect=" + mVisRect.toShortString()); 2868 } else { 2869 mTempRect.set(rectangle); 2870 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2871 "Request scroll to rect: " 2872 + mTempRect.toShortString() 2873 + " visRect=" + mVisRect.toShortString()); 2874 } 2875 if (mTempRect.intersect(mVisRect)) { 2876 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2877 "Focus window visible rect: " 2878 + mTempRect.toShortString()); 2879 if (mTempRect.height() > 2880 (mView.getHeight()-vi.top-vi.bottom)) { 2881 // If the focus simply is not going to fit, then 2882 // best is probably just to leave things as-is. 2883 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2884 "Too tall; leaving scrollY=" + scrollY); 2885 } else if ((mTempRect.top-scrollY) < vi.top) { 2886 scrollY -= vi.top - (mTempRect.top-scrollY); 2887 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2888 "Top covered; scrollY=" + scrollY); 2889 } else if ((mTempRect.bottom-scrollY) 2890 > (mView.getHeight()-vi.bottom)) { 2891 scrollY += (mTempRect.bottom-scrollY) 2892 - (mView.getHeight()-vi.bottom); 2893 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2894 "Bottom covered; scrollY=" + scrollY); 2895 } 2896 handled = true; 2897 } 2898 } 2899 } 2900 } 2901 2902 if (scrollY != mScrollY) { 2903 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2904 + mScrollY + " , new=" + scrollY); 2905 if (!immediate) { 2906 if (mScroller == null) { 2907 mScroller = new Scroller(mView.getContext()); 2908 } 2909 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2910 } else if (mScroller != null) { 2911 mScroller.abortAnimation(); 2912 } 2913 mScrollY = scrollY; 2914 } 2915 2916 return handled; 2917 } 2918 2919 /** 2920 * @hide 2921 */ 2922 public View getAccessibilityFocusedHost() { 2923 return mAccessibilityFocusedHost; 2924 } 2925 2926 /** 2927 * @hide 2928 */ 2929 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2930 return mAccessibilityFocusedVirtualView; 2931 } 2932 2933 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2934 // If we have a virtual view with accessibility focus we need 2935 // to clear the focus and invalidate the virtual view bounds. 2936 if (mAccessibilityFocusedVirtualView != null) { 2937 2938 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2939 View focusHost = mAccessibilityFocusedHost; 2940 2941 // Wipe the state of the current accessibility focus since 2942 // the call into the provider to clear accessibility focus 2943 // will fire an accessibility event which will end up calling 2944 // this method and we want to have clean state when this 2945 // invocation happens. 2946 mAccessibilityFocusedHost = null; 2947 mAccessibilityFocusedVirtualView = null; 2948 2949 // Clear accessibility focus on the host after clearing state since 2950 // this method may be reentrant. 2951 focusHost.clearAccessibilityFocusNoCallbacks(); 2952 2953 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2954 if (provider != null) { 2955 // Invalidate the area of the cleared accessibility focus. 2956 focusNode.getBoundsInParent(mTempRect); 2957 focusHost.invalidate(mTempRect); 2958 // Clear accessibility focus in the virtual node. 2959 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2960 focusNode.getSourceNodeId()); 2961 provider.performAction(virtualNodeId, 2962 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2963 } 2964 focusNode.recycle(); 2965 } 2966 if (mAccessibilityFocusedHost != null) { 2967 // Clear accessibility focus in the view. 2968 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2969 } 2970 2971 // Set the new focus host and node. 2972 mAccessibilityFocusedHost = view; 2973 mAccessibilityFocusedVirtualView = node; 2974 2975 if (mAttachInfo.mHardwareRenderer != null) { 2976 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2977 } 2978 } 2979 2980 @Override 2981 public void requestChildFocus(View child, View focused) { 2982 if (DEBUG_INPUT_RESIZE) { 2983 Log.v(TAG, "Request child focus: focus now " + focused); 2984 } 2985 checkThread(); 2986 scheduleTraversals(); 2987 } 2988 2989 @Override 2990 public void clearChildFocus(View child) { 2991 if (DEBUG_INPUT_RESIZE) { 2992 Log.v(TAG, "Clearing child focus"); 2993 } 2994 checkThread(); 2995 scheduleTraversals(); 2996 } 2997 2998 @Override 2999 public ViewParent getParentForAccessibility() { 3000 return null; 3001 } 3002 3003 @Override 3004 public void focusableViewAvailable(View v) { 3005 checkThread(); 3006 if (mView != null) { 3007 if (!mView.hasFocus()) { 3008 v.requestFocus(); 3009 } else { 3010 // the one case where will transfer focus away from the current one 3011 // is if the current view is a view group that prefers to give focus 3012 // to its children first AND the view is a descendant of it. 3013 View focused = mView.findFocus(); 3014 if (focused instanceof ViewGroup) { 3015 ViewGroup group = (ViewGroup) focused; 3016 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3017 && isViewDescendantOf(v, focused)) { 3018 v.requestFocus(); 3019 } 3020 } 3021 } 3022 } 3023 } 3024 3025 @Override 3026 public void recomputeViewAttributes(View child) { 3027 checkThread(); 3028 if (mView == child) { 3029 mAttachInfo.mRecomputeGlobalAttributes = true; 3030 if (!mWillDrawSoon) { 3031 scheduleTraversals(); 3032 } 3033 } 3034 } 3035 3036 void dispatchDetachedFromWindow() { 3037 if (mView != null && mView.mAttachInfo != null) { 3038 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 3039 mView.dispatchDetachedFromWindow(); 3040 } 3041 3042 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 3043 mAccessibilityManager.removeAccessibilityStateChangeListener( 3044 mAccessibilityInteractionConnectionManager); 3045 mAccessibilityManager.removeHighTextContrastStateChangeListener( 3046 mHighContrastTextManager); 3047 removeSendWindowContentChangedCallback(); 3048 3049 destroyHardwareRenderer(); 3050 3051 setAccessibilityFocus(null, null); 3052 3053 mView.assignParent(null); 3054 mView = null; 3055 mAttachInfo.mRootView = null; 3056 3057 mSurface.release(); 3058 3059 if (mInputQueueCallback != null && mInputQueue != null) { 3060 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 3061 mInputQueue.dispose(); 3062 mInputQueueCallback = null; 3063 mInputQueue = null; 3064 } 3065 if (mInputEventReceiver != null) { 3066 mInputEventReceiver.dispose(); 3067 mInputEventReceiver = null; 3068 } 3069 try { 3070 mWindowSession.remove(mWindow); 3071 } catch (RemoteException e) { 3072 } 3073 3074 // Dispose the input channel after removing the window so the Window Manager 3075 // doesn't interpret the input channel being closed as an abnormal termination. 3076 if (mInputChannel != null) { 3077 mInputChannel.dispose(); 3078 mInputChannel = null; 3079 } 3080 3081 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3082 3083 unscheduleTraversals(); 3084 } 3085 3086 void updateConfiguration(Configuration config, boolean force) { 3087 if (DEBUG_CONFIGURATION) Log.v(TAG, 3088 "Applying new config to window " 3089 + mWindowAttributes.getTitle() 3090 + ": " + config); 3091 3092 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3093 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3094 config = new Configuration(config); 3095 ci.applyToConfiguration(mNoncompatDensity, config); 3096 } 3097 3098 synchronized (sConfigCallbacks) { 3099 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3100 sConfigCallbacks.get(i).onConfigurationChanged(config); 3101 } 3102 } 3103 if (mView != null) { 3104 // At this point the resources have been updated to 3105 // have the most recent config, whatever that is. Use 3106 // the one in them which may be newer. 3107 config = mView.getResources().getConfiguration(); 3108 if (force || mLastConfiguration.diff(config) != 0) { 3109 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3110 final int currentLayoutDirection = config.getLayoutDirection(); 3111 mLastConfiguration.setTo(config); 3112 if (lastLayoutDirection != currentLayoutDirection && 3113 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3114 mView.setLayoutDirection(currentLayoutDirection); 3115 } 3116 mView.dispatchConfigurationChanged(config); 3117 } 3118 } 3119 } 3120 3121 /** 3122 * Return true if child is an ancestor of parent, (or equal to the parent). 3123 */ 3124 public static boolean isViewDescendantOf(View child, View parent) { 3125 if (child == parent) { 3126 return true; 3127 } 3128 3129 final ViewParent theParent = child.getParent(); 3130 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3131 } 3132 3133 private static void forceLayout(View view) { 3134 view.forceLayout(); 3135 if (view instanceof ViewGroup) { 3136 ViewGroup group = (ViewGroup) view; 3137 final int count = group.getChildCount(); 3138 for (int i = 0; i < count; i++) { 3139 forceLayout(group.getChildAt(i)); 3140 } 3141 } 3142 } 3143 3144 private final static int MSG_INVALIDATE = 1; 3145 private final static int MSG_INVALIDATE_RECT = 2; 3146 private final static int MSG_DIE = 3; 3147 private final static int MSG_RESIZED = 4; 3148 private final static int MSG_RESIZED_REPORT = 5; 3149 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3150 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3151 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3152 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3153 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3154 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 3155 private final static int MSG_CHECK_FOCUS = 13; 3156 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3157 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3158 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3159 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3160 private final static int MSG_UPDATE_CONFIGURATION = 18; 3161 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3162 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3163 private final static int MSG_INVALIDATE_WORLD = 22; 3164 private final static int MSG_WINDOW_MOVED = 23; 3165 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 24; 3166 private final static int MSG_DISPATCH_WINDOW_SHOWN = 25; 3167 3168 final class ViewRootHandler extends Handler { 3169 @Override 3170 public String getMessageName(Message message) { 3171 switch (message.what) { 3172 case MSG_INVALIDATE: 3173 return "MSG_INVALIDATE"; 3174 case MSG_INVALIDATE_RECT: 3175 return "MSG_INVALIDATE_RECT"; 3176 case MSG_DIE: 3177 return "MSG_DIE"; 3178 case MSG_RESIZED: 3179 return "MSG_RESIZED"; 3180 case MSG_RESIZED_REPORT: 3181 return "MSG_RESIZED_REPORT"; 3182 case MSG_WINDOW_FOCUS_CHANGED: 3183 return "MSG_WINDOW_FOCUS_CHANGED"; 3184 case MSG_DISPATCH_INPUT_EVENT: 3185 return "MSG_DISPATCH_INPUT_EVENT"; 3186 case MSG_DISPATCH_APP_VISIBILITY: 3187 return "MSG_DISPATCH_APP_VISIBILITY"; 3188 case MSG_DISPATCH_GET_NEW_SURFACE: 3189 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3190 case MSG_DISPATCH_KEY_FROM_IME: 3191 return "MSG_DISPATCH_KEY_FROM_IME"; 3192 case MSG_FINISH_INPUT_CONNECTION: 3193 return "MSG_FINISH_INPUT_CONNECTION"; 3194 case MSG_CHECK_FOCUS: 3195 return "MSG_CHECK_FOCUS"; 3196 case MSG_CLOSE_SYSTEM_DIALOGS: 3197 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3198 case MSG_DISPATCH_DRAG_EVENT: 3199 return "MSG_DISPATCH_DRAG_EVENT"; 3200 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3201 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3202 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3203 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3204 case MSG_UPDATE_CONFIGURATION: 3205 return "MSG_UPDATE_CONFIGURATION"; 3206 case MSG_PROCESS_INPUT_EVENTS: 3207 return "MSG_PROCESS_INPUT_EVENTS"; 3208 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3209 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3210 case MSG_WINDOW_MOVED: 3211 return "MSG_WINDOW_MOVED"; 3212 case MSG_SYNTHESIZE_INPUT_EVENT: 3213 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3214 case MSG_DISPATCH_WINDOW_SHOWN: 3215 return "MSG_DISPATCH_WINDOW_SHOWN"; 3216 } 3217 return super.getMessageName(message); 3218 } 3219 3220 @Override 3221 public void handleMessage(Message msg) { 3222 switch (msg.what) { 3223 case MSG_INVALIDATE: 3224 ((View) msg.obj).invalidate(); 3225 break; 3226 case MSG_INVALIDATE_RECT: 3227 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3228 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3229 info.recycle(); 3230 break; 3231 case MSG_PROCESS_INPUT_EVENTS: 3232 mProcessInputEventsScheduled = false; 3233 doProcessInputEvents(); 3234 break; 3235 case MSG_DISPATCH_APP_VISIBILITY: 3236 handleAppVisibility(msg.arg1 != 0); 3237 break; 3238 case MSG_DISPATCH_GET_NEW_SURFACE: 3239 handleGetNewSurface(); 3240 break; 3241 case MSG_RESIZED: { 3242 // Recycled in the fall through... 3243 SomeArgs args = (SomeArgs) msg.obj; 3244 if (mWinFrame.equals(args.arg1) 3245 && mPendingOverscanInsets.equals(args.arg5) 3246 && mPendingContentInsets.equals(args.arg2) 3247 && mPendingStableInsets.equals(args.arg6) 3248 && mPendingVisibleInsets.equals(args.arg3) 3249 && mPendingOutsets.equals(args.arg7) 3250 && args.arg4 == null) { 3251 break; 3252 } 3253 } // fall through... 3254 case MSG_RESIZED_REPORT: 3255 if (mAdded) { 3256 SomeArgs args = (SomeArgs) msg.obj; 3257 3258 Configuration config = (Configuration) args.arg4; 3259 if (config != null) { 3260 updateConfiguration(config, false); 3261 } 3262 3263 mWinFrame.set((Rect) args.arg1); 3264 mPendingOverscanInsets.set((Rect) args.arg5); 3265 mPendingContentInsets.set((Rect) args.arg2); 3266 mPendingStableInsets.set((Rect) args.arg6); 3267 mPendingVisibleInsets.set((Rect) args.arg3); 3268 mPendingOutsets.set((Rect) args.arg7); 3269 3270 args.recycle(); 3271 3272 if (msg.what == MSG_RESIZED_REPORT) { 3273 mReportNextDraw = true; 3274 } 3275 3276 if (mView != null) { 3277 forceLayout(mView); 3278 } 3279 3280 requestLayout(); 3281 } 3282 break; 3283 case MSG_WINDOW_MOVED: 3284 if (mAdded) { 3285 final int w = mWinFrame.width(); 3286 final int h = mWinFrame.height(); 3287 final int l = msg.arg1; 3288 final int t = msg.arg2; 3289 mWinFrame.left = l; 3290 mWinFrame.right = l + w; 3291 mWinFrame.top = t; 3292 mWinFrame.bottom = t + h; 3293 3294 if (mView != null) { 3295 forceLayout(mView); 3296 } 3297 requestLayout(); 3298 } 3299 break; 3300 case MSG_WINDOW_FOCUS_CHANGED: { 3301 if (mAdded) { 3302 boolean hasWindowFocus = msg.arg1 != 0; 3303 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3304 3305 profileRendering(hasWindowFocus); 3306 3307 if (hasWindowFocus) { 3308 boolean inTouchMode = msg.arg2 != 0; 3309 ensureTouchModeLocally(inTouchMode); 3310 3311 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3312 mFullRedrawNeeded = true; 3313 try { 3314 final WindowManager.LayoutParams lp = mWindowAttributes; 3315 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3316 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3317 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 3318 } catch (OutOfResourcesException e) { 3319 Log.e(TAG, "OutOfResourcesException locking surface", e); 3320 try { 3321 if (!mWindowSession.outOfMemory(mWindow)) { 3322 Slog.w(TAG, "No processes killed for memory; killing self"); 3323 Process.killProcess(Process.myPid()); 3324 } 3325 } catch (RemoteException ex) { 3326 } 3327 // Retry in a bit. 3328 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3329 return; 3330 } 3331 } 3332 } 3333 3334 mLastWasImTarget = WindowManager.LayoutParams 3335 .mayUseInputMethod(mWindowAttributes.flags); 3336 3337 InputMethodManager imm = InputMethodManager.peekInstance(); 3338 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3339 imm.onPreWindowFocus(mView, hasWindowFocus); 3340 } 3341 if (mView != null) { 3342 mAttachInfo.mKeyDispatchState.reset(); 3343 mView.dispatchWindowFocusChanged(hasWindowFocus); 3344 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3345 } 3346 3347 // Note: must be done after the focus change callbacks, 3348 // so all of the view state is set up correctly. 3349 if (hasWindowFocus) { 3350 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3351 imm.onPostWindowFocus(mView, mView.findFocus(), 3352 mWindowAttributes.softInputMode, 3353 !mHasHadWindowFocus, mWindowAttributes.flags); 3354 } 3355 // Clear the forward bit. We can just do this directly, since 3356 // the window manager doesn't care about it. 3357 mWindowAttributes.softInputMode &= 3358 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3359 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3360 .softInputMode &= 3361 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3362 mHasHadWindowFocus = true; 3363 } 3364 } 3365 } break; 3366 case MSG_DIE: 3367 doDie(); 3368 break; 3369 case MSG_DISPATCH_INPUT_EVENT: { 3370 SomeArgs args = (SomeArgs)msg.obj; 3371 InputEvent event = (InputEvent)args.arg1; 3372 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3373 enqueueInputEvent(event, receiver, 0, true); 3374 args.recycle(); 3375 } break; 3376 case MSG_SYNTHESIZE_INPUT_EVENT: { 3377 InputEvent event = (InputEvent)msg.obj; 3378 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3379 } break; 3380 case MSG_DISPATCH_KEY_FROM_IME: { 3381 if (LOCAL_LOGV) Log.v( 3382 TAG, "Dispatching key " 3383 + msg.obj + " from IME to " + mView); 3384 KeyEvent event = (KeyEvent)msg.obj; 3385 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3386 // The IME is trying to say this event is from the 3387 // system! Bad bad bad! 3388 //noinspection UnusedAssignment 3389 event = KeyEvent.changeFlags(event, event.getFlags() & 3390 ~KeyEvent.FLAG_FROM_SYSTEM); 3391 } 3392 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3393 } break; 3394 case MSG_FINISH_INPUT_CONNECTION: { 3395 InputMethodManager imm = InputMethodManager.peekInstance(); 3396 if (imm != null) { 3397 imm.reportFinishInputConnection((InputConnection)msg.obj); 3398 } 3399 } break; 3400 case MSG_CHECK_FOCUS: { 3401 InputMethodManager imm = InputMethodManager.peekInstance(); 3402 if (imm != null) { 3403 imm.checkFocus(); 3404 } 3405 } break; 3406 case MSG_CLOSE_SYSTEM_DIALOGS: { 3407 if (mView != null) { 3408 mView.onCloseSystemDialogs((String)msg.obj); 3409 } 3410 } break; 3411 case MSG_DISPATCH_DRAG_EVENT: 3412 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3413 DragEvent event = (DragEvent)msg.obj; 3414 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3415 handleDragEvent(event); 3416 } break; 3417 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3418 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3419 } break; 3420 case MSG_UPDATE_CONFIGURATION: { 3421 Configuration config = (Configuration)msg.obj; 3422 if (config.isOtherSeqNewer(mLastConfiguration)) { 3423 config = mLastConfiguration; 3424 } 3425 updateConfiguration(config, false); 3426 } break; 3427 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3428 setAccessibilityFocus(null, null); 3429 } break; 3430 case MSG_INVALIDATE_WORLD: { 3431 if (mView != null) { 3432 invalidateWorld(mView); 3433 } 3434 } break; 3435 case MSG_DISPATCH_WINDOW_SHOWN: { 3436 handleDispatchWindowShown(); 3437 } 3438 } 3439 } 3440 } 3441 3442 final ViewRootHandler mHandler = new ViewRootHandler(); 3443 3444 /** 3445 * Something in the current window tells us we need to change the touch mode. For 3446 * example, we are not in touch mode, and the user touches the screen. 3447 * 3448 * If the touch mode has changed, tell the window manager, and handle it locally. 3449 * 3450 * @param inTouchMode Whether we want to be in touch mode. 3451 * @return True if the touch mode changed and focus changed was changed as a result 3452 */ 3453 boolean ensureTouchMode(boolean inTouchMode) { 3454 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3455 + "touch mode is " + mAttachInfo.mInTouchMode); 3456 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3457 3458 // tell the window manager 3459 try { 3460 if (!isInLocalFocusMode()) { 3461 mWindowSession.setInTouchMode(inTouchMode); 3462 } 3463 } catch (RemoteException e) { 3464 throw new RuntimeException(e); 3465 } 3466 3467 // handle the change 3468 return ensureTouchModeLocally(inTouchMode); 3469 } 3470 3471 /** 3472 * Ensure that the touch mode for this window is set, and if it is changing, 3473 * take the appropriate action. 3474 * @param inTouchMode Whether we want to be in touch mode. 3475 * @return True if the touch mode changed and focus changed was changed as a result 3476 */ 3477 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3478 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3479 + "touch mode is " + mAttachInfo.mInTouchMode); 3480 3481 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3482 3483 mAttachInfo.mInTouchMode = inTouchMode; 3484 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3485 3486 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3487 } 3488 3489 private boolean enterTouchMode() { 3490 if (mView != null && mView.hasFocus()) { 3491 // note: not relying on mFocusedView here because this could 3492 // be when the window is first being added, and mFocused isn't 3493 // set yet. 3494 final View focused = mView.findFocus(); 3495 if (focused != null && !focused.isFocusableInTouchMode()) { 3496 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3497 if (ancestorToTakeFocus != null) { 3498 // there is an ancestor that wants focus after its 3499 // descendants that is focusable in touch mode.. give it 3500 // focus 3501 return ancestorToTakeFocus.requestFocus(); 3502 } else { 3503 // There's nothing to focus. Clear and propagate through the 3504 // hierarchy, but don't attempt to place new focus. 3505 focused.clearFocusInternal(null, true, false); 3506 return true; 3507 } 3508 } 3509 } 3510 return false; 3511 } 3512 3513 /** 3514 * Find an ancestor of focused that wants focus after its descendants and is 3515 * focusable in touch mode. 3516 * @param focused The currently focused view. 3517 * @return An appropriate view, or null if no such view exists. 3518 */ 3519 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3520 ViewParent parent = focused.getParent(); 3521 while (parent instanceof ViewGroup) { 3522 final ViewGroup vgParent = (ViewGroup) parent; 3523 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3524 && vgParent.isFocusableInTouchMode()) { 3525 return vgParent; 3526 } 3527 if (vgParent.isRootNamespace()) { 3528 return null; 3529 } else { 3530 parent = vgParent.getParent(); 3531 } 3532 } 3533 return null; 3534 } 3535 3536 private boolean leaveTouchMode() { 3537 if (mView != null) { 3538 if (mView.hasFocus()) { 3539 View focusedView = mView.findFocus(); 3540 if (!(focusedView instanceof ViewGroup)) { 3541 // some view has focus, let it keep it 3542 return false; 3543 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3544 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3545 // some view group has focus, and doesn't prefer its children 3546 // over itself for focus, so let them keep it. 3547 return false; 3548 } 3549 } 3550 3551 // find the best view to give focus to in this brave new non-touch-mode 3552 // world 3553 final View focused = focusSearch(null, View.FOCUS_DOWN); 3554 if (focused != null) { 3555 return focused.requestFocus(View.FOCUS_DOWN); 3556 } 3557 } 3558 return false; 3559 } 3560 3561 /** 3562 * Base class for implementing a stage in the chain of responsibility 3563 * for processing input events. 3564 * <p> 3565 * Events are delivered to the stage by the {@link #deliver} method. The stage 3566 * then has the choice of finishing the event or forwarding it to the next stage. 3567 * </p> 3568 */ 3569 abstract class InputStage { 3570 private final InputStage mNext; 3571 3572 protected static final int FORWARD = 0; 3573 protected static final int FINISH_HANDLED = 1; 3574 protected static final int FINISH_NOT_HANDLED = 2; 3575 3576 /** 3577 * Creates an input stage. 3578 * @param next The next stage to which events should be forwarded. 3579 */ 3580 public InputStage(InputStage next) { 3581 mNext = next; 3582 } 3583 3584 /** 3585 * Delivers an event to be processed. 3586 */ 3587 public final void deliver(QueuedInputEvent q) { 3588 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3589 forward(q); 3590 } else if (shouldDropInputEvent(q)) { 3591 finish(q, false); 3592 } else { 3593 apply(q, onProcess(q)); 3594 } 3595 } 3596 3597 /** 3598 * Marks the the input event as finished then forwards it to the next stage. 3599 */ 3600 protected void finish(QueuedInputEvent q, boolean handled) { 3601 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3602 if (handled) { 3603 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3604 } 3605 forward(q); 3606 } 3607 3608 /** 3609 * Forwards the event to the next stage. 3610 */ 3611 protected void forward(QueuedInputEvent q) { 3612 onDeliverToNext(q); 3613 } 3614 3615 /** 3616 * Applies a result code from {@link #onProcess} to the specified event. 3617 */ 3618 protected void apply(QueuedInputEvent q, int result) { 3619 if (result == FORWARD) { 3620 forward(q); 3621 } else if (result == FINISH_HANDLED) { 3622 finish(q, true); 3623 } else if (result == FINISH_NOT_HANDLED) { 3624 finish(q, false); 3625 } else { 3626 throw new IllegalArgumentException("Invalid result: " + result); 3627 } 3628 } 3629 3630 /** 3631 * Called when an event is ready to be processed. 3632 * @return A result code indicating how the event was handled. 3633 */ 3634 protected int onProcess(QueuedInputEvent q) { 3635 return FORWARD; 3636 } 3637 3638 /** 3639 * Called when an event is being delivered to the next stage. 3640 */ 3641 protected void onDeliverToNext(QueuedInputEvent q) { 3642 if (DEBUG_INPUT_STAGES) { 3643 Log.v(TAG, "Done with " + getClass().getSimpleName() + ". " + q); 3644 } 3645 if (mNext != null) { 3646 mNext.deliver(q); 3647 } else { 3648 finishInputEvent(q); 3649 } 3650 } 3651 3652 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3653 if (mView == null || !mAdded) { 3654 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3655 return true; 3656 } else if ((!mAttachInfo.mHasWindowFocus 3657 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) || mStopped 3658 || (mPausedForTransition && !isBack(q.mEvent))) { 3659 // This is a focus event and the window doesn't currently have input focus or 3660 // has stopped. This could be an event that came back from the previous stage 3661 // but the window has lost focus or stopped in the meantime. 3662 if (isTerminalInputEvent(q.mEvent)) { 3663 // Don't drop terminal input events, however mark them as canceled. 3664 q.mEvent.cancel(); 3665 Slog.w(TAG, "Cancelling event due to no window focus: " + q.mEvent); 3666 return false; 3667 } 3668 3669 // Drop non-terminal input events. 3670 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3671 return true; 3672 } 3673 return false; 3674 } 3675 3676 void dump(String prefix, PrintWriter writer) { 3677 if (mNext != null) { 3678 mNext.dump(prefix, writer); 3679 } 3680 } 3681 3682 private boolean isBack(InputEvent event) { 3683 if (event instanceof KeyEvent) { 3684 return ((KeyEvent) event).getKeyCode() == KeyEvent.KEYCODE_BACK; 3685 } else { 3686 return false; 3687 } 3688 } 3689 } 3690 3691 /** 3692 * Base class for implementing an input pipeline stage that supports 3693 * asynchronous and out-of-order processing of input events. 3694 * <p> 3695 * In addition to what a normal input stage can do, an asynchronous 3696 * input stage may also defer an input event that has been delivered to it 3697 * and finish or forward it later. 3698 * </p> 3699 */ 3700 abstract class AsyncInputStage extends InputStage { 3701 private final String mTraceCounter; 3702 3703 private QueuedInputEvent mQueueHead; 3704 private QueuedInputEvent mQueueTail; 3705 private int mQueueLength; 3706 3707 protected static final int DEFER = 3; 3708 3709 /** 3710 * Creates an asynchronous input stage. 3711 * @param next The next stage to which events should be forwarded. 3712 * @param traceCounter The name of a counter to record the size of 3713 * the queue of pending events. 3714 */ 3715 public AsyncInputStage(InputStage next, String traceCounter) { 3716 super(next); 3717 mTraceCounter = traceCounter; 3718 } 3719 3720 /** 3721 * Marks the event as deferred, which is to say that it will be handled 3722 * asynchronously. The caller is responsible for calling {@link #forward} 3723 * or {@link #finish} later when it is done handling the event. 3724 */ 3725 protected void defer(QueuedInputEvent q) { 3726 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3727 enqueue(q); 3728 } 3729 3730 @Override 3731 protected void forward(QueuedInputEvent q) { 3732 // Clear the deferred flag. 3733 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3734 3735 // Fast path if the queue is empty. 3736 QueuedInputEvent curr = mQueueHead; 3737 if (curr == null) { 3738 super.forward(q); 3739 return; 3740 } 3741 3742 // Determine whether the event must be serialized behind any others 3743 // before it can be delivered to the next stage. This is done because 3744 // deferred events might be handled out of order by the stage. 3745 final int deviceId = q.mEvent.getDeviceId(); 3746 QueuedInputEvent prev = null; 3747 boolean blocked = false; 3748 while (curr != null && curr != q) { 3749 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3750 blocked = true; 3751 } 3752 prev = curr; 3753 curr = curr.mNext; 3754 } 3755 3756 // If the event is blocked, then leave it in the queue to be delivered later. 3757 // Note that the event might not yet be in the queue if it was not previously 3758 // deferred so we will enqueue it if needed. 3759 if (blocked) { 3760 if (curr == null) { 3761 enqueue(q); 3762 } 3763 return; 3764 } 3765 3766 // The event is not blocked. Deliver it immediately. 3767 if (curr != null) { 3768 curr = curr.mNext; 3769 dequeue(q, prev); 3770 } 3771 super.forward(q); 3772 3773 // Dequeuing this event may have unblocked successors. Deliver them. 3774 while (curr != null) { 3775 if (deviceId == curr.mEvent.getDeviceId()) { 3776 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3777 break; 3778 } 3779 QueuedInputEvent next = curr.mNext; 3780 dequeue(curr, prev); 3781 super.forward(curr); 3782 curr = next; 3783 } else { 3784 prev = curr; 3785 curr = curr.mNext; 3786 } 3787 } 3788 } 3789 3790 @Override 3791 protected void apply(QueuedInputEvent q, int result) { 3792 if (result == DEFER) { 3793 defer(q); 3794 } else { 3795 super.apply(q, result); 3796 } 3797 } 3798 3799 private void enqueue(QueuedInputEvent q) { 3800 if (mQueueTail == null) { 3801 mQueueHead = q; 3802 mQueueTail = q; 3803 } else { 3804 mQueueTail.mNext = q; 3805 mQueueTail = q; 3806 } 3807 3808 mQueueLength += 1; 3809 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3810 } 3811 3812 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3813 if (prev == null) { 3814 mQueueHead = q.mNext; 3815 } else { 3816 prev.mNext = q.mNext; 3817 } 3818 if (mQueueTail == q) { 3819 mQueueTail = prev; 3820 } 3821 q.mNext = null; 3822 3823 mQueueLength -= 1; 3824 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3825 } 3826 3827 @Override 3828 void dump(String prefix, PrintWriter writer) { 3829 writer.print(prefix); 3830 writer.print(getClass().getName()); 3831 writer.print(": mQueueLength="); 3832 writer.println(mQueueLength); 3833 3834 super.dump(prefix, writer); 3835 } 3836 } 3837 3838 /** 3839 * Delivers pre-ime input events to a native activity. 3840 * Does not support pointer events. 3841 */ 3842 final class NativePreImeInputStage extends AsyncInputStage 3843 implements InputQueue.FinishedInputEventCallback { 3844 public NativePreImeInputStage(InputStage next, String traceCounter) { 3845 super(next, traceCounter); 3846 } 3847 3848 @Override 3849 protected int onProcess(QueuedInputEvent q) { 3850 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3851 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3852 return DEFER; 3853 } 3854 return FORWARD; 3855 } 3856 3857 @Override 3858 public void onFinishedInputEvent(Object token, boolean handled) { 3859 QueuedInputEvent q = (QueuedInputEvent)token; 3860 if (handled) { 3861 finish(q, true); 3862 return; 3863 } 3864 forward(q); 3865 } 3866 } 3867 3868 /** 3869 * Delivers pre-ime input events to the view hierarchy. 3870 * Does not support pointer events. 3871 */ 3872 final class ViewPreImeInputStage extends InputStage { 3873 public ViewPreImeInputStage(InputStage next) { 3874 super(next); 3875 } 3876 3877 @Override 3878 protected int onProcess(QueuedInputEvent q) { 3879 if (q.mEvent instanceof KeyEvent) { 3880 return processKeyEvent(q); 3881 } 3882 return FORWARD; 3883 } 3884 3885 private int processKeyEvent(QueuedInputEvent q) { 3886 final KeyEvent event = (KeyEvent)q.mEvent; 3887 if (mView.dispatchKeyEventPreIme(event)) { 3888 return FINISH_HANDLED; 3889 } 3890 return FORWARD; 3891 } 3892 } 3893 3894 /** 3895 * Delivers input events to the ime. 3896 * Does not support pointer events. 3897 */ 3898 final class ImeInputStage extends AsyncInputStage 3899 implements InputMethodManager.FinishedInputEventCallback { 3900 public ImeInputStage(InputStage next, String traceCounter) { 3901 super(next, traceCounter); 3902 } 3903 3904 @Override 3905 protected int onProcess(QueuedInputEvent q) { 3906 if (mLastWasImTarget && !isInLocalFocusMode()) { 3907 InputMethodManager imm = InputMethodManager.peekInstance(); 3908 if (imm != null) { 3909 final InputEvent event = q.mEvent; 3910 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3911 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3912 if (result == InputMethodManager.DISPATCH_HANDLED) { 3913 return FINISH_HANDLED; 3914 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3915 // The IME could not handle it, so skip along to the next InputStage 3916 return FORWARD; 3917 } else { 3918 return DEFER; // callback will be invoked later 3919 } 3920 } 3921 } 3922 return FORWARD; 3923 } 3924 3925 @Override 3926 public void onFinishedInputEvent(Object token, boolean handled) { 3927 QueuedInputEvent q = (QueuedInputEvent)token; 3928 if (handled) { 3929 finish(q, true); 3930 return; 3931 } 3932 forward(q); 3933 } 3934 } 3935 3936 /** 3937 * Performs early processing of post-ime input events. 3938 */ 3939 final class EarlyPostImeInputStage extends InputStage { 3940 public EarlyPostImeInputStage(InputStage next) { 3941 super(next); 3942 } 3943 3944 @Override 3945 protected int onProcess(QueuedInputEvent q) { 3946 if (q.mEvent instanceof KeyEvent) { 3947 return processKeyEvent(q); 3948 } else { 3949 final int source = q.mEvent.getSource(); 3950 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3951 return processPointerEvent(q); 3952 } 3953 } 3954 return FORWARD; 3955 } 3956 3957 private int processKeyEvent(QueuedInputEvent q) { 3958 final KeyEvent event = (KeyEvent)q.mEvent; 3959 3960 // If the key's purpose is to exit touch mode then we consume it 3961 // and consider it handled. 3962 if (checkForLeavingTouchModeAndConsume(event)) { 3963 return FINISH_HANDLED; 3964 } 3965 3966 // Make sure the fallback event policy sees all keys that will be 3967 // delivered to the view hierarchy. 3968 mFallbackEventHandler.preDispatchKeyEvent(event); 3969 return FORWARD; 3970 } 3971 3972 private int processPointerEvent(QueuedInputEvent q) { 3973 final MotionEvent event = (MotionEvent)q.mEvent; 3974 3975 // Translate the pointer event for compatibility, if needed. 3976 if (mTranslator != null) { 3977 mTranslator.translateEventInScreenToAppWindow(event); 3978 } 3979 3980 // Enter touch mode on down or scroll. 3981 final int action = event.getAction(); 3982 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3983 ensureTouchMode(true); 3984 } 3985 3986 // Offset the scroll position. 3987 if (mCurScrollY != 0) { 3988 event.offsetLocation(0, mCurScrollY); 3989 } 3990 3991 // Remember the touch position for possible drag-initiation. 3992 if (event.isTouchEvent()) { 3993 mLastTouchPoint.x = event.getRawX(); 3994 mLastTouchPoint.y = event.getRawY(); 3995 } 3996 return FORWARD; 3997 } 3998 } 3999 4000 /** 4001 * Delivers post-ime input events to a native activity. 4002 */ 4003 final class NativePostImeInputStage extends AsyncInputStage 4004 implements InputQueue.FinishedInputEventCallback { 4005 public NativePostImeInputStage(InputStage next, String traceCounter) { 4006 super(next, traceCounter); 4007 } 4008 4009 @Override 4010 protected int onProcess(QueuedInputEvent q) { 4011 if (mInputQueue != null) { 4012 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 4013 return DEFER; 4014 } 4015 return FORWARD; 4016 } 4017 4018 @Override 4019 public void onFinishedInputEvent(Object token, boolean handled) { 4020 QueuedInputEvent q = (QueuedInputEvent)token; 4021 if (handled) { 4022 finish(q, true); 4023 return; 4024 } 4025 forward(q); 4026 } 4027 } 4028 4029 /** 4030 * Delivers post-ime input events to the view hierarchy. 4031 */ 4032 final class ViewPostImeInputStage extends InputStage { 4033 public ViewPostImeInputStage(InputStage next) { 4034 super(next); 4035 } 4036 4037 @Override 4038 protected int onProcess(QueuedInputEvent q) { 4039 if (q.mEvent instanceof KeyEvent) { 4040 return processKeyEvent(q); 4041 } else { 4042 final int source = q.mEvent.getSource(); 4043 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4044 return processPointerEvent(q); 4045 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4046 return processTrackballEvent(q); 4047 } else { 4048 return processGenericMotionEvent(q); 4049 } 4050 } 4051 } 4052 4053 @Override 4054 protected void onDeliverToNext(QueuedInputEvent q) { 4055 if (mUnbufferedInputDispatch 4056 && q.mEvent instanceof MotionEvent 4057 && ((MotionEvent)q.mEvent).isTouchEvent() 4058 && isTerminalInputEvent(q.mEvent)) { 4059 mUnbufferedInputDispatch = false; 4060 scheduleConsumeBatchedInput(); 4061 } 4062 super.onDeliverToNext(q); 4063 } 4064 4065 private int processKeyEvent(QueuedInputEvent q) { 4066 final KeyEvent event = (KeyEvent)q.mEvent; 4067 4068 // Deliver the key to the view hierarchy. 4069 if (mView.dispatchKeyEvent(event)) { 4070 return FINISH_HANDLED; 4071 } 4072 4073 if (shouldDropInputEvent(q)) { 4074 return FINISH_NOT_HANDLED; 4075 } 4076 4077 // If the Control modifier is held, try to interpret the key as a shortcut. 4078 if (event.getAction() == KeyEvent.ACTION_DOWN 4079 && event.isCtrlPressed() 4080 && event.getRepeatCount() == 0 4081 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4082 if (mView.dispatchKeyShortcutEvent(event)) { 4083 return FINISH_HANDLED; 4084 } 4085 if (shouldDropInputEvent(q)) { 4086 return FINISH_NOT_HANDLED; 4087 } 4088 } 4089 4090 // Apply the fallback event policy. 4091 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4092 return FINISH_HANDLED; 4093 } 4094 if (shouldDropInputEvent(q)) { 4095 return FINISH_NOT_HANDLED; 4096 } 4097 4098 // Handle automatic focus changes. 4099 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4100 int direction = 0; 4101 switch (event.getKeyCode()) { 4102 case KeyEvent.KEYCODE_DPAD_LEFT: 4103 if (event.hasNoModifiers()) { 4104 direction = View.FOCUS_LEFT; 4105 } 4106 break; 4107 case KeyEvent.KEYCODE_DPAD_RIGHT: 4108 if (event.hasNoModifiers()) { 4109 direction = View.FOCUS_RIGHT; 4110 } 4111 break; 4112 case KeyEvent.KEYCODE_DPAD_UP: 4113 if (event.hasNoModifiers()) { 4114 direction = View.FOCUS_UP; 4115 } 4116 break; 4117 case KeyEvent.KEYCODE_DPAD_DOWN: 4118 if (event.hasNoModifiers()) { 4119 direction = View.FOCUS_DOWN; 4120 } 4121 break; 4122 case KeyEvent.KEYCODE_TAB: 4123 if (event.hasNoModifiers()) { 4124 direction = View.FOCUS_FORWARD; 4125 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4126 direction = View.FOCUS_BACKWARD; 4127 } 4128 break; 4129 } 4130 if (direction != 0) { 4131 View focused = mView.findFocus(); 4132 if (focused != null) { 4133 View v = focused.focusSearch(direction); 4134 if (v != null && v != focused) { 4135 // do the math the get the interesting rect 4136 // of previous focused into the coord system of 4137 // newly focused view 4138 focused.getFocusedRect(mTempRect); 4139 if (mView instanceof ViewGroup) { 4140 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4141 focused, mTempRect); 4142 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4143 v, mTempRect); 4144 } 4145 if (v.requestFocus(direction, mTempRect)) { 4146 playSoundEffect(SoundEffectConstants 4147 .getContantForFocusDirection(direction)); 4148 return FINISH_HANDLED; 4149 } 4150 } 4151 4152 // Give the focused view a last chance to handle the dpad key. 4153 if (mView.dispatchUnhandledMove(focused, direction)) { 4154 return FINISH_HANDLED; 4155 } 4156 } else { 4157 // find the best view to give focus to in this non-touch-mode with no-focus 4158 View v = focusSearch(null, direction); 4159 if (v != null && v.requestFocus(direction)) { 4160 return FINISH_HANDLED; 4161 } 4162 } 4163 } 4164 } 4165 return FORWARD; 4166 } 4167 4168 private int processPointerEvent(QueuedInputEvent q) { 4169 final MotionEvent event = (MotionEvent)q.mEvent; 4170 4171 mAttachInfo.mUnbufferedDispatchRequested = false; 4172 boolean handled = mView.dispatchPointerEvent(event); 4173 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4174 mUnbufferedInputDispatch = true; 4175 if (mConsumeBatchedInputScheduled) { 4176 scheduleConsumeBatchedInputImmediately(); 4177 } 4178 } 4179 return handled ? FINISH_HANDLED : FORWARD; 4180 } 4181 4182 private int processTrackballEvent(QueuedInputEvent q) { 4183 final MotionEvent event = (MotionEvent)q.mEvent; 4184 4185 if (mView.dispatchTrackballEvent(event)) { 4186 return FINISH_HANDLED; 4187 } 4188 return FORWARD; 4189 } 4190 4191 private int processGenericMotionEvent(QueuedInputEvent q) { 4192 final MotionEvent event = (MotionEvent)q.mEvent; 4193 4194 // Deliver the event to the view. 4195 if (mView.dispatchGenericMotionEvent(event)) { 4196 return FINISH_HANDLED; 4197 } 4198 return FORWARD; 4199 } 4200 } 4201 4202 /** 4203 * Performs synthesis of new input events from unhandled input events. 4204 */ 4205 final class SyntheticInputStage extends InputStage { 4206 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4207 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4208 private final SyntheticTouchNavigationHandler mTouchNavigation = 4209 new SyntheticTouchNavigationHandler(); 4210 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4211 4212 public SyntheticInputStage() { 4213 super(null); 4214 } 4215 4216 @Override 4217 protected int onProcess(QueuedInputEvent q) { 4218 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4219 if (q.mEvent instanceof MotionEvent) { 4220 final MotionEvent event = (MotionEvent)q.mEvent; 4221 final int source = event.getSource(); 4222 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4223 mTrackball.process(event); 4224 return FINISH_HANDLED; 4225 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4226 mJoystick.process(event); 4227 return FINISH_HANDLED; 4228 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4229 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4230 mTouchNavigation.process(event); 4231 return FINISH_HANDLED; 4232 } 4233 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4234 mKeyboard.process((KeyEvent)q.mEvent); 4235 return FINISH_HANDLED; 4236 } 4237 4238 return FORWARD; 4239 } 4240 4241 @Override 4242 protected void onDeliverToNext(QueuedInputEvent q) { 4243 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4244 // Cancel related synthetic events if any prior stage has handled the event. 4245 if (q.mEvent instanceof MotionEvent) { 4246 final MotionEvent event = (MotionEvent)q.mEvent; 4247 final int source = event.getSource(); 4248 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4249 mTrackball.cancel(event); 4250 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4251 mJoystick.cancel(event); 4252 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4253 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4254 mTouchNavigation.cancel(event); 4255 } 4256 } 4257 } 4258 super.onDeliverToNext(q); 4259 } 4260 } 4261 4262 /** 4263 * Creates dpad events from unhandled trackball movements. 4264 */ 4265 final class SyntheticTrackballHandler { 4266 private final TrackballAxis mX = new TrackballAxis(); 4267 private final TrackballAxis mY = new TrackballAxis(); 4268 private long mLastTime; 4269 4270 public void process(MotionEvent event) { 4271 // Translate the trackball event into DPAD keys and try to deliver those. 4272 long curTime = SystemClock.uptimeMillis(); 4273 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4274 // It has been too long since the last movement, 4275 // so restart at the beginning. 4276 mX.reset(0); 4277 mY.reset(0); 4278 mLastTime = curTime; 4279 } 4280 4281 final int action = event.getAction(); 4282 final int metaState = event.getMetaState(); 4283 switch (action) { 4284 case MotionEvent.ACTION_DOWN: 4285 mX.reset(2); 4286 mY.reset(2); 4287 enqueueInputEvent(new KeyEvent(curTime, curTime, 4288 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4289 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4290 InputDevice.SOURCE_KEYBOARD)); 4291 break; 4292 case MotionEvent.ACTION_UP: 4293 mX.reset(2); 4294 mY.reset(2); 4295 enqueueInputEvent(new KeyEvent(curTime, curTime, 4296 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4297 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4298 InputDevice.SOURCE_KEYBOARD)); 4299 break; 4300 } 4301 4302 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4303 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4304 + " move=" + event.getX() 4305 + " / Y=" + mY.position + " step=" 4306 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4307 + " move=" + event.getY()); 4308 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4309 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4310 4311 // Generate DPAD events based on the trackball movement. 4312 // We pick the axis that has moved the most as the direction of 4313 // the DPAD. When we generate DPAD events for one axis, then the 4314 // other axis is reset -- we don't want to perform DPAD jumps due 4315 // to slight movements in the trackball when making major movements 4316 // along the other axis. 4317 int keycode = 0; 4318 int movement = 0; 4319 float accel = 1; 4320 if (xOff > yOff) { 4321 movement = mX.generate(); 4322 if (movement != 0) { 4323 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4324 : KeyEvent.KEYCODE_DPAD_LEFT; 4325 accel = mX.acceleration; 4326 mY.reset(2); 4327 } 4328 } else if (yOff > 0) { 4329 movement = mY.generate(); 4330 if (movement != 0) { 4331 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4332 : KeyEvent.KEYCODE_DPAD_UP; 4333 accel = mY.acceleration; 4334 mX.reset(2); 4335 } 4336 } 4337 4338 if (keycode != 0) { 4339 if (movement < 0) movement = -movement; 4340 int accelMovement = (int)(movement * accel); 4341 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4342 + " accelMovement=" + accelMovement 4343 + " accel=" + accel); 4344 if (accelMovement > movement) { 4345 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4346 + keycode); 4347 movement--; 4348 int repeatCount = accelMovement - movement; 4349 enqueueInputEvent(new KeyEvent(curTime, curTime, 4350 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4351 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4352 InputDevice.SOURCE_KEYBOARD)); 4353 } 4354 while (movement > 0) { 4355 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4356 + keycode); 4357 movement--; 4358 curTime = SystemClock.uptimeMillis(); 4359 enqueueInputEvent(new KeyEvent(curTime, curTime, 4360 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4361 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4362 InputDevice.SOURCE_KEYBOARD)); 4363 enqueueInputEvent(new KeyEvent(curTime, curTime, 4364 KeyEvent.ACTION_UP, keycode, 0, metaState, 4365 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4366 InputDevice.SOURCE_KEYBOARD)); 4367 } 4368 mLastTime = curTime; 4369 } 4370 } 4371 4372 public void cancel(MotionEvent event) { 4373 mLastTime = Integer.MIN_VALUE; 4374 4375 // If we reach this, we consumed a trackball event. 4376 // Because we will not translate the trackball event into a key event, 4377 // touch mode will not exit, so we exit touch mode here. 4378 if (mView != null && mAdded) { 4379 ensureTouchMode(false); 4380 } 4381 } 4382 } 4383 4384 /** 4385 * Maintains state information for a single trackball axis, generating 4386 * discrete (DPAD) movements based on raw trackball motion. 4387 */ 4388 static final class TrackballAxis { 4389 /** 4390 * The maximum amount of acceleration we will apply. 4391 */ 4392 static final float MAX_ACCELERATION = 20; 4393 4394 /** 4395 * The maximum amount of time (in milliseconds) between events in order 4396 * for us to consider the user to be doing fast trackball movements, 4397 * and thus apply an acceleration. 4398 */ 4399 static final long FAST_MOVE_TIME = 150; 4400 4401 /** 4402 * Scaling factor to the time (in milliseconds) between events to how 4403 * much to multiple/divide the current acceleration. When movement 4404 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4405 * FAST_MOVE_TIME it divides it. 4406 */ 4407 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4408 4409 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4410 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4411 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4412 4413 float position; 4414 float acceleration = 1; 4415 long lastMoveTime = 0; 4416 int step; 4417 int dir; 4418 int nonAccelMovement; 4419 4420 void reset(int _step) { 4421 position = 0; 4422 acceleration = 1; 4423 lastMoveTime = 0; 4424 step = _step; 4425 dir = 0; 4426 } 4427 4428 /** 4429 * Add trackball movement into the state. If the direction of movement 4430 * has been reversed, the state is reset before adding the 4431 * movement (so that you don't have to compensate for any previously 4432 * collected movement before see the result of the movement in the 4433 * new direction). 4434 * 4435 * @return Returns the absolute value of the amount of movement 4436 * collected so far. 4437 */ 4438 float collect(float off, long time, String axis) { 4439 long normTime; 4440 if (off > 0) { 4441 normTime = (long)(off * FAST_MOVE_TIME); 4442 if (dir < 0) { 4443 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4444 position = 0; 4445 step = 0; 4446 acceleration = 1; 4447 lastMoveTime = 0; 4448 } 4449 dir = 1; 4450 } else if (off < 0) { 4451 normTime = (long)((-off) * FAST_MOVE_TIME); 4452 if (dir > 0) { 4453 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4454 position = 0; 4455 step = 0; 4456 acceleration = 1; 4457 lastMoveTime = 0; 4458 } 4459 dir = -1; 4460 } else { 4461 normTime = 0; 4462 } 4463 4464 // The number of milliseconds between each movement that is 4465 // considered "normal" and will not result in any acceleration 4466 // or deceleration, scaled by the offset we have here. 4467 if (normTime > 0) { 4468 long delta = time - lastMoveTime; 4469 lastMoveTime = time; 4470 float acc = acceleration; 4471 if (delta < normTime) { 4472 // The user is scrolling rapidly, so increase acceleration. 4473 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4474 if (scale > 1) acc *= scale; 4475 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4476 + off + " normTime=" + normTime + " delta=" + delta 4477 + " scale=" + scale + " acc=" + acc); 4478 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4479 } else { 4480 // The user is scrolling slowly, so decrease acceleration. 4481 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4482 if (scale > 1) acc /= scale; 4483 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4484 + off + " normTime=" + normTime + " delta=" + delta 4485 + " scale=" + scale + " acc=" + acc); 4486 acceleration = acc > 1 ? acc : 1; 4487 } 4488 } 4489 position += off; 4490 return Math.abs(position); 4491 } 4492 4493 /** 4494 * Generate the number of discrete movement events appropriate for 4495 * the currently collected trackball movement. 4496 * 4497 * @return Returns the number of discrete movements, either positive 4498 * or negative, or 0 if there is not enough trackball movement yet 4499 * for a discrete movement. 4500 */ 4501 int generate() { 4502 int movement = 0; 4503 nonAccelMovement = 0; 4504 do { 4505 final int dir = position >= 0 ? 1 : -1; 4506 switch (step) { 4507 // If we are going to execute the first step, then we want 4508 // to do this as soon as possible instead of waiting for 4509 // a full movement, in order to make things look responsive. 4510 case 0: 4511 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4512 return movement; 4513 } 4514 movement += dir; 4515 nonAccelMovement += dir; 4516 step = 1; 4517 break; 4518 // If we have generated the first movement, then we need 4519 // to wait for the second complete trackball motion before 4520 // generating the second discrete movement. 4521 case 1: 4522 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4523 return movement; 4524 } 4525 movement += dir; 4526 nonAccelMovement += dir; 4527 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4528 step = 2; 4529 break; 4530 // After the first two, we generate discrete movements 4531 // consistently with the trackball, applying an acceleration 4532 // if the trackball is moving quickly. This is a simple 4533 // acceleration on top of what we already compute based 4534 // on how quickly the wheel is being turned, to apply 4535 // a longer increasing acceleration to continuous movement 4536 // in one direction. 4537 default: 4538 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4539 return movement; 4540 } 4541 movement += dir; 4542 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4543 float acc = acceleration; 4544 acc *= 1.1f; 4545 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4546 break; 4547 } 4548 } while (true); 4549 } 4550 } 4551 4552 /** 4553 * Creates dpad events from unhandled joystick movements. 4554 */ 4555 final class SyntheticJoystickHandler extends Handler { 4556 private final static String TAG = "SyntheticJoystickHandler"; 4557 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4558 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4559 4560 private int mLastXDirection; 4561 private int mLastYDirection; 4562 private int mLastXKeyCode; 4563 private int mLastYKeyCode; 4564 4565 public SyntheticJoystickHandler() { 4566 super(true); 4567 } 4568 4569 @Override 4570 public void handleMessage(Message msg) { 4571 switch (msg.what) { 4572 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4573 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4574 KeyEvent oldEvent = (KeyEvent)msg.obj; 4575 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4576 SystemClock.uptimeMillis(), 4577 oldEvent.getRepeatCount() + 1); 4578 if (mAttachInfo.mHasWindowFocus) { 4579 enqueueInputEvent(e); 4580 Message m = obtainMessage(msg.what, e); 4581 m.setAsynchronous(true); 4582 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4583 } 4584 } break; 4585 } 4586 } 4587 4588 public void process(MotionEvent event) { 4589 switch(event.getActionMasked()) { 4590 case MotionEvent.ACTION_CANCEL: 4591 cancel(event); 4592 break; 4593 case MotionEvent.ACTION_MOVE: 4594 update(event, true); 4595 break; 4596 default: 4597 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4598 } 4599 } 4600 4601 private void cancel(MotionEvent event) { 4602 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4603 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4604 update(event, false); 4605 } 4606 4607 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4608 final long time = event.getEventTime(); 4609 final int metaState = event.getMetaState(); 4610 final int deviceId = event.getDeviceId(); 4611 final int source = event.getSource(); 4612 4613 int xDirection = joystickAxisValueToDirection( 4614 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4615 if (xDirection == 0) { 4616 xDirection = joystickAxisValueToDirection(event.getX()); 4617 } 4618 4619 int yDirection = joystickAxisValueToDirection( 4620 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4621 if (yDirection == 0) { 4622 yDirection = joystickAxisValueToDirection(event.getY()); 4623 } 4624 4625 if (xDirection != mLastXDirection) { 4626 if (mLastXKeyCode != 0) { 4627 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4628 enqueueInputEvent(new KeyEvent(time, time, 4629 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4630 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4631 mLastXKeyCode = 0; 4632 } 4633 4634 mLastXDirection = xDirection; 4635 4636 if (xDirection != 0 && synthesizeNewKeys) { 4637 mLastXKeyCode = xDirection > 0 4638 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4639 final KeyEvent e = new KeyEvent(time, time, 4640 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4641 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4642 enqueueInputEvent(e); 4643 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4644 m.setAsynchronous(true); 4645 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4646 } 4647 } 4648 4649 if (yDirection != mLastYDirection) { 4650 if (mLastYKeyCode != 0) { 4651 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4652 enqueueInputEvent(new KeyEvent(time, time, 4653 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4654 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4655 mLastYKeyCode = 0; 4656 } 4657 4658 mLastYDirection = yDirection; 4659 4660 if (yDirection != 0 && synthesizeNewKeys) { 4661 mLastYKeyCode = yDirection > 0 4662 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4663 final KeyEvent e = new KeyEvent(time, time, 4664 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4665 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4666 enqueueInputEvent(e); 4667 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4668 m.setAsynchronous(true); 4669 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4670 } 4671 } 4672 } 4673 4674 private int joystickAxisValueToDirection(float value) { 4675 if (value >= 0.5f) { 4676 return 1; 4677 } else if (value <= -0.5f) { 4678 return -1; 4679 } else { 4680 return 0; 4681 } 4682 } 4683 } 4684 4685 /** 4686 * Creates dpad events from unhandled touch navigation movements. 4687 */ 4688 final class SyntheticTouchNavigationHandler extends Handler { 4689 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4690 private static final boolean LOCAL_DEBUG = false; 4691 4692 // Assumed nominal width and height in millimeters of a touch navigation pad, 4693 // if no resolution information is available from the input system. 4694 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4695 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4696 4697 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4698 4699 // The nominal distance traveled to move by one unit. 4700 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4701 4702 // Minimum and maximum fling velocity in ticks per second. 4703 // The minimum velocity should be set such that we perform enough ticks per 4704 // second that the fling appears to be fluid. For example, if we set the minimum 4705 // to 2 ticks per second, then there may be up to half a second delay between the next 4706 // to last and last ticks which is noticeably discrete and jerky. This value should 4707 // probably not be set to anything less than about 4. 4708 // If fling accuracy is a problem then consider tuning the tick distance instead. 4709 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4710 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4711 4712 // Fling velocity decay factor applied after each new key is emitted. 4713 // This parameter controls the deceleration and overall duration of the fling. 4714 // The fling stops automatically when its velocity drops below the minimum 4715 // fling velocity defined above. 4716 private static final float FLING_TICK_DECAY = 0.8f; 4717 4718 /* The input device that we are tracking. */ 4719 4720 private int mCurrentDeviceId = -1; 4721 private int mCurrentSource; 4722 private boolean mCurrentDeviceSupported; 4723 4724 /* Configuration for the current input device. */ 4725 4726 // The scaled tick distance. A movement of this amount should generally translate 4727 // into a single dpad event in a given direction. 4728 private float mConfigTickDistance; 4729 4730 // The minimum and maximum scaled fling velocity. 4731 private float mConfigMinFlingVelocity; 4732 private float mConfigMaxFlingVelocity; 4733 4734 /* Tracking state. */ 4735 4736 // The velocity tracker for detecting flings. 4737 private VelocityTracker mVelocityTracker; 4738 4739 // The active pointer id, or -1 if none. 4740 private int mActivePointerId = -1; 4741 4742 // Location where tracking started. 4743 private float mStartX; 4744 private float mStartY; 4745 4746 // Most recently observed position. 4747 private float mLastX; 4748 private float mLastY; 4749 4750 // Accumulated movement delta since the last direction key was sent. 4751 private float mAccumulatedX; 4752 private float mAccumulatedY; 4753 4754 // Set to true if any movement was delivered to the app. 4755 // Implies that tap slop was exceeded. 4756 private boolean mConsumedMovement; 4757 4758 // The most recently sent key down event. 4759 // The keycode remains set until the direction changes or a fling ends 4760 // so that repeated key events may be generated as required. 4761 private long mPendingKeyDownTime; 4762 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4763 private int mPendingKeyRepeatCount; 4764 private int mPendingKeyMetaState; 4765 4766 // The current fling velocity while a fling is in progress. 4767 private boolean mFlinging; 4768 private float mFlingVelocity; 4769 4770 public SyntheticTouchNavigationHandler() { 4771 super(true); 4772 } 4773 4774 public void process(MotionEvent event) { 4775 // Update the current device information. 4776 final long time = event.getEventTime(); 4777 final int deviceId = event.getDeviceId(); 4778 final int source = event.getSource(); 4779 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4780 finishKeys(time); 4781 finishTracking(time); 4782 mCurrentDeviceId = deviceId; 4783 mCurrentSource = source; 4784 mCurrentDeviceSupported = false; 4785 InputDevice device = event.getDevice(); 4786 if (device != null) { 4787 // In order to support an input device, we must know certain 4788 // characteristics about it, such as its size and resolution. 4789 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4790 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4791 if (xRange != null && yRange != null) { 4792 mCurrentDeviceSupported = true; 4793 4794 // Infer the resolution if it not actually known. 4795 float xRes = xRange.getResolution(); 4796 if (xRes <= 0) { 4797 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4798 } 4799 float yRes = yRange.getResolution(); 4800 if (yRes <= 0) { 4801 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4802 } 4803 float nominalRes = (xRes + yRes) * 0.5f; 4804 4805 // Precompute all of the configuration thresholds we will need. 4806 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4807 mConfigMinFlingVelocity = 4808 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4809 mConfigMaxFlingVelocity = 4810 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4811 4812 if (LOCAL_DEBUG) { 4813 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4814 + " (" + Integer.toHexString(mCurrentSource) + "): " 4815 + ", mConfigTickDistance=" + mConfigTickDistance 4816 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4817 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4818 } 4819 } 4820 } 4821 } 4822 if (!mCurrentDeviceSupported) { 4823 return; 4824 } 4825 4826 // Handle the event. 4827 final int action = event.getActionMasked(); 4828 switch (action) { 4829 case MotionEvent.ACTION_DOWN: { 4830 boolean caughtFling = mFlinging; 4831 finishKeys(time); 4832 finishTracking(time); 4833 mActivePointerId = event.getPointerId(0); 4834 mVelocityTracker = VelocityTracker.obtain(); 4835 mVelocityTracker.addMovement(event); 4836 mStartX = event.getX(); 4837 mStartY = event.getY(); 4838 mLastX = mStartX; 4839 mLastY = mStartY; 4840 mAccumulatedX = 0; 4841 mAccumulatedY = 0; 4842 4843 // If we caught a fling, then pretend that the tap slop has already 4844 // been exceeded to suppress taps whose only purpose is to stop the fling. 4845 mConsumedMovement = caughtFling; 4846 break; 4847 } 4848 4849 case MotionEvent.ACTION_MOVE: 4850 case MotionEvent.ACTION_UP: { 4851 if (mActivePointerId < 0) { 4852 break; 4853 } 4854 final int index = event.findPointerIndex(mActivePointerId); 4855 if (index < 0) { 4856 finishKeys(time); 4857 finishTracking(time); 4858 break; 4859 } 4860 4861 mVelocityTracker.addMovement(event); 4862 final float x = event.getX(index); 4863 final float y = event.getY(index); 4864 mAccumulatedX += x - mLastX; 4865 mAccumulatedY += y - mLastY; 4866 mLastX = x; 4867 mLastY = y; 4868 4869 // Consume any accumulated movement so far. 4870 final int metaState = event.getMetaState(); 4871 consumeAccumulatedMovement(time, metaState); 4872 4873 // Detect taps and flings. 4874 if (action == MotionEvent.ACTION_UP) { 4875 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4876 // It might be a fling. 4877 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4878 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4879 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4880 if (!startFling(time, vx, vy)) { 4881 finishKeys(time); 4882 } 4883 } 4884 finishTracking(time); 4885 } 4886 break; 4887 } 4888 4889 case MotionEvent.ACTION_CANCEL: { 4890 finishKeys(time); 4891 finishTracking(time); 4892 break; 4893 } 4894 } 4895 } 4896 4897 public void cancel(MotionEvent event) { 4898 if (mCurrentDeviceId == event.getDeviceId() 4899 && mCurrentSource == event.getSource()) { 4900 final long time = event.getEventTime(); 4901 finishKeys(time); 4902 finishTracking(time); 4903 } 4904 } 4905 4906 private void finishKeys(long time) { 4907 cancelFling(); 4908 sendKeyUp(time); 4909 } 4910 4911 private void finishTracking(long time) { 4912 if (mActivePointerId >= 0) { 4913 mActivePointerId = -1; 4914 mVelocityTracker.recycle(); 4915 mVelocityTracker = null; 4916 } 4917 } 4918 4919 private void consumeAccumulatedMovement(long time, int metaState) { 4920 final float absX = Math.abs(mAccumulatedX); 4921 final float absY = Math.abs(mAccumulatedY); 4922 if (absX >= absY) { 4923 if (absX >= mConfigTickDistance) { 4924 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4925 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4926 mAccumulatedY = 0; 4927 mConsumedMovement = true; 4928 } 4929 } else { 4930 if (absY >= mConfigTickDistance) { 4931 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4932 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4933 mAccumulatedX = 0; 4934 mConsumedMovement = true; 4935 } 4936 } 4937 } 4938 4939 private float consumeAccumulatedMovement(long time, int metaState, 4940 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4941 while (accumulator <= -mConfigTickDistance) { 4942 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4943 accumulator += mConfigTickDistance; 4944 } 4945 while (accumulator >= mConfigTickDistance) { 4946 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4947 accumulator -= mConfigTickDistance; 4948 } 4949 return accumulator; 4950 } 4951 4952 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4953 if (mPendingKeyCode != keyCode) { 4954 sendKeyUp(time); 4955 mPendingKeyDownTime = time; 4956 mPendingKeyCode = keyCode; 4957 mPendingKeyRepeatCount = 0; 4958 } else { 4959 mPendingKeyRepeatCount += 1; 4960 } 4961 mPendingKeyMetaState = metaState; 4962 4963 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4964 // but it doesn't quite make sense when simulating the events in this way. 4965 if (LOCAL_DEBUG) { 4966 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4967 + ", repeatCount=" + mPendingKeyRepeatCount 4968 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4969 } 4970 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4971 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4972 mPendingKeyMetaState, mCurrentDeviceId, 4973 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4974 } 4975 4976 private void sendKeyUp(long time) { 4977 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4978 if (LOCAL_DEBUG) { 4979 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4980 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4981 } 4982 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4983 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4984 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4985 mCurrentSource)); 4986 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4987 } 4988 } 4989 4990 private boolean startFling(long time, float vx, float vy) { 4991 if (LOCAL_DEBUG) { 4992 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4993 + ", min=" + mConfigMinFlingVelocity); 4994 } 4995 4996 // Flings must be oriented in the same direction as the preceding movements. 4997 switch (mPendingKeyCode) { 4998 case KeyEvent.KEYCODE_DPAD_LEFT: 4999 if (-vx >= mConfigMinFlingVelocity 5000 && Math.abs(vy) < mConfigMinFlingVelocity) { 5001 mFlingVelocity = -vx; 5002 break; 5003 } 5004 return false; 5005 5006 case KeyEvent.KEYCODE_DPAD_RIGHT: 5007 if (vx >= mConfigMinFlingVelocity 5008 && Math.abs(vy) < mConfigMinFlingVelocity) { 5009 mFlingVelocity = vx; 5010 break; 5011 } 5012 return false; 5013 5014 case KeyEvent.KEYCODE_DPAD_UP: 5015 if (-vy >= mConfigMinFlingVelocity 5016 && Math.abs(vx) < mConfigMinFlingVelocity) { 5017 mFlingVelocity = -vy; 5018 break; 5019 } 5020 return false; 5021 5022 case KeyEvent.KEYCODE_DPAD_DOWN: 5023 if (vy >= mConfigMinFlingVelocity 5024 && Math.abs(vx) < mConfigMinFlingVelocity) { 5025 mFlingVelocity = vy; 5026 break; 5027 } 5028 return false; 5029 } 5030 5031 // Post the first fling event. 5032 mFlinging = postFling(time); 5033 return mFlinging; 5034 } 5035 5036 private boolean postFling(long time) { 5037 // The idea here is to estimate the time when the pointer would have 5038 // traveled one tick distance unit given the current fling velocity. 5039 // This effect creates continuity of motion. 5040 if (mFlingVelocity >= mConfigMinFlingVelocity) { 5041 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 5042 postAtTime(mFlingRunnable, time + delay); 5043 if (LOCAL_DEBUG) { 5044 Log.d(LOCAL_TAG, "Posted fling: velocity=" 5045 + mFlingVelocity + ", delay=" + delay 5046 + ", keyCode=" + mPendingKeyCode); 5047 } 5048 return true; 5049 } 5050 return false; 5051 } 5052 5053 private void cancelFling() { 5054 if (mFlinging) { 5055 removeCallbacks(mFlingRunnable); 5056 mFlinging = false; 5057 } 5058 } 5059 5060 private final Runnable mFlingRunnable = new Runnable() { 5061 @Override 5062 public void run() { 5063 final long time = SystemClock.uptimeMillis(); 5064 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5065 mFlingVelocity *= FLING_TICK_DECAY; 5066 if (!postFling(time)) { 5067 mFlinging = false; 5068 finishKeys(time); 5069 } 5070 } 5071 }; 5072 } 5073 5074 final class SyntheticKeyboardHandler { 5075 public void process(KeyEvent event) { 5076 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5077 return; 5078 } 5079 5080 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5081 final int keyCode = event.getKeyCode(); 5082 final int metaState = event.getMetaState(); 5083 5084 // Check for fallback actions specified by the key character map. 5085 KeyCharacterMap.FallbackAction fallbackAction = 5086 kcm.getFallbackAction(keyCode, metaState); 5087 if (fallbackAction != null) { 5088 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5089 KeyEvent fallbackEvent = KeyEvent.obtain( 5090 event.getDownTime(), event.getEventTime(), 5091 event.getAction(), fallbackAction.keyCode, 5092 event.getRepeatCount(), fallbackAction.metaState, 5093 event.getDeviceId(), event.getScanCode(), 5094 flags, event.getSource(), null); 5095 fallbackAction.recycle(); 5096 enqueueInputEvent(fallbackEvent); 5097 } 5098 } 5099 } 5100 5101 /** 5102 * Returns true if the key is used for keyboard navigation. 5103 * @param keyEvent The key event. 5104 * @return True if the key is used for keyboard navigation. 5105 */ 5106 private static boolean isNavigationKey(KeyEvent keyEvent) { 5107 switch (keyEvent.getKeyCode()) { 5108 case KeyEvent.KEYCODE_DPAD_LEFT: 5109 case KeyEvent.KEYCODE_DPAD_RIGHT: 5110 case KeyEvent.KEYCODE_DPAD_UP: 5111 case KeyEvent.KEYCODE_DPAD_DOWN: 5112 case KeyEvent.KEYCODE_DPAD_CENTER: 5113 case KeyEvent.KEYCODE_PAGE_UP: 5114 case KeyEvent.KEYCODE_PAGE_DOWN: 5115 case KeyEvent.KEYCODE_MOVE_HOME: 5116 case KeyEvent.KEYCODE_MOVE_END: 5117 case KeyEvent.KEYCODE_TAB: 5118 case KeyEvent.KEYCODE_SPACE: 5119 case KeyEvent.KEYCODE_ENTER: 5120 return true; 5121 } 5122 return false; 5123 } 5124 5125 /** 5126 * Returns true if the key is used for typing. 5127 * @param keyEvent The key event. 5128 * @return True if the key is used for typing. 5129 */ 5130 private static boolean isTypingKey(KeyEvent keyEvent) { 5131 return keyEvent.getUnicodeChar() > 0; 5132 } 5133 5134 /** 5135 * See if the key event means we should leave touch mode (and leave touch mode if so). 5136 * @param event The key event. 5137 * @return Whether this key event should be consumed (meaning the act of 5138 * leaving touch mode alone is considered the event). 5139 */ 5140 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5141 // Only relevant in touch mode. 5142 if (!mAttachInfo.mInTouchMode) { 5143 return false; 5144 } 5145 5146 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5147 final int action = event.getAction(); 5148 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5149 return false; 5150 } 5151 5152 // Don't leave touch mode if the IME told us not to. 5153 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5154 return false; 5155 } 5156 5157 // If the key can be used for keyboard navigation then leave touch mode 5158 // and select a focused view if needed (in ensureTouchMode). 5159 // When a new focused view is selected, we consume the navigation key because 5160 // navigation doesn't make much sense unless a view already has focus so 5161 // the key's purpose is to set focus. 5162 if (isNavigationKey(event)) { 5163 return ensureTouchMode(false); 5164 } 5165 5166 // If the key can be used for typing then leave touch mode 5167 // and select a focused view if needed (in ensureTouchMode). 5168 // Always allow the view to process the typing key. 5169 if (isTypingKey(event)) { 5170 ensureTouchMode(false); 5171 return false; 5172 } 5173 5174 return false; 5175 } 5176 5177 /* drag/drop */ 5178 void setLocalDragState(Object obj) { 5179 mLocalDragState = obj; 5180 } 5181 5182 private void handleDragEvent(DragEvent event) { 5183 // From the root, only drag start/end/location are dispatched. entered/exited 5184 // are determined and dispatched by the viewgroup hierarchy, who then report 5185 // that back here for ultimate reporting back to the framework. 5186 if (mView != null && mAdded) { 5187 final int what = event.mAction; 5188 5189 if (what == DragEvent.ACTION_DRAG_EXITED) { 5190 // A direct EXITED event means that the window manager knows we've just crossed 5191 // a window boundary, so the current drag target within this one must have 5192 // just been exited. Send it the usual notifications and then we're done 5193 // for now. 5194 mView.dispatchDragEvent(event); 5195 } else { 5196 // Cache the drag description when the operation starts, then fill it in 5197 // on subsequent calls as a convenience 5198 if (what == DragEvent.ACTION_DRAG_STARTED) { 5199 mCurrentDragView = null; // Start the current-recipient tracking 5200 mDragDescription = event.mClipDescription; 5201 } else { 5202 event.mClipDescription = mDragDescription; 5203 } 5204 5205 // For events with a [screen] location, translate into window coordinates 5206 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5207 mDragPoint.set(event.mX, event.mY); 5208 if (mTranslator != null) { 5209 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5210 } 5211 5212 if (mCurScrollY != 0) { 5213 mDragPoint.offset(0, mCurScrollY); 5214 } 5215 5216 event.mX = mDragPoint.x; 5217 event.mY = mDragPoint.y; 5218 } 5219 5220 // Remember who the current drag target is pre-dispatch 5221 final View prevDragView = mCurrentDragView; 5222 5223 // Now dispatch the drag/drop event 5224 boolean result = mView.dispatchDragEvent(event); 5225 5226 // If we changed apparent drag target, tell the OS about it 5227 if (prevDragView != mCurrentDragView) { 5228 try { 5229 if (prevDragView != null) { 5230 mWindowSession.dragRecipientExited(mWindow); 5231 } 5232 if (mCurrentDragView != null) { 5233 mWindowSession.dragRecipientEntered(mWindow); 5234 } 5235 } catch (RemoteException e) { 5236 Slog.e(TAG, "Unable to note drag target change"); 5237 } 5238 } 5239 5240 // Report the drop result when we're done 5241 if (what == DragEvent.ACTION_DROP) { 5242 mDragDescription = null; 5243 try { 5244 Log.i(TAG, "Reporting drop result: " + result); 5245 mWindowSession.reportDropResult(mWindow, result); 5246 } catch (RemoteException e) { 5247 Log.e(TAG, "Unable to report drop result"); 5248 } 5249 } 5250 5251 // When the drag operation ends, release any local state object 5252 // that may have been in use 5253 if (what == DragEvent.ACTION_DRAG_ENDED) { 5254 setLocalDragState(null); 5255 } 5256 } 5257 } 5258 event.recycle(); 5259 } 5260 5261 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5262 if (mSeq != args.seq) { 5263 // The sequence has changed, so we need to update our value and make 5264 // sure to do a traversal afterward so the window manager is given our 5265 // most recent data. 5266 mSeq = args.seq; 5267 mAttachInfo.mForceReportNewAttributes = true; 5268 scheduleTraversals(); 5269 } 5270 if (mView == null) return; 5271 if (args.localChanges != 0) { 5272 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5273 } 5274 5275 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5276 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5277 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5278 mView.dispatchSystemUiVisibilityChanged(visibility); 5279 } 5280 } 5281 5282 public void handleDispatchWindowShown() { 5283 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5284 } 5285 5286 public void getLastTouchPoint(Point outLocation) { 5287 outLocation.x = (int) mLastTouchPoint.x; 5288 outLocation.y = (int) mLastTouchPoint.y; 5289 } 5290 5291 public void setDragFocus(View newDragTarget) { 5292 if (mCurrentDragView != newDragTarget) { 5293 mCurrentDragView = newDragTarget; 5294 } 5295 } 5296 5297 private AudioManager getAudioManager() { 5298 if (mView == null) { 5299 throw new IllegalStateException("getAudioManager called when there is no mView"); 5300 } 5301 if (mAudioManager == null) { 5302 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5303 } 5304 return mAudioManager; 5305 } 5306 5307 public AccessibilityInteractionController getAccessibilityInteractionController() { 5308 if (mView == null) { 5309 throw new IllegalStateException("getAccessibilityInteractionController" 5310 + " called when there is no mView"); 5311 } 5312 if (mAccessibilityInteractionController == null) { 5313 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5314 } 5315 return mAccessibilityInteractionController; 5316 } 5317 5318 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5319 boolean insetsPending) throws RemoteException { 5320 5321 float appScale = mAttachInfo.mApplicationScale; 5322 boolean restore = false; 5323 if (params != null && mTranslator != null) { 5324 restore = true; 5325 params.backup(); 5326 mTranslator.translateWindowLayout(params); 5327 } 5328 if (params != null) { 5329 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5330 } 5331 mPendingConfiguration.seq = 0; 5332 //Log.d(TAG, ">>>>>> CALLING relayout"); 5333 if (params != null && mOrigWindowType != params.type) { 5334 // For compatibility with old apps, don't crash here. 5335 if (mTargetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5336 Slog.w(TAG, "Window type can not be changed after " 5337 + "the window is added; ignoring change of " + mView); 5338 params.type = mOrigWindowType; 5339 } 5340 } 5341 int relayoutResult = mWindowSession.relayout( 5342 mWindow, mSeq, params, 5343 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5344 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5345 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5346 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5347 mPendingStableInsets, mPendingOutsets, mPendingConfiguration, mSurface); 5348 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5349 if (restore) { 5350 params.restore(); 5351 } 5352 5353 if (mTranslator != null) { 5354 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5355 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5356 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5357 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5358 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5359 } 5360 return relayoutResult; 5361 } 5362 5363 /** 5364 * {@inheritDoc} 5365 */ 5366 @Override 5367 public void playSoundEffect(int effectId) { 5368 checkThread(); 5369 5370 try { 5371 final AudioManager audioManager = getAudioManager(); 5372 5373 switch (effectId) { 5374 case SoundEffectConstants.CLICK: 5375 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5376 return; 5377 case SoundEffectConstants.NAVIGATION_DOWN: 5378 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5379 return; 5380 case SoundEffectConstants.NAVIGATION_LEFT: 5381 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5382 return; 5383 case SoundEffectConstants.NAVIGATION_RIGHT: 5384 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5385 return; 5386 case SoundEffectConstants.NAVIGATION_UP: 5387 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5388 return; 5389 default: 5390 throw new IllegalArgumentException("unknown effect id " + effectId + 5391 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5392 } 5393 } catch (IllegalStateException e) { 5394 // Exception thrown by getAudioManager() when mView is null 5395 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5396 e.printStackTrace(); 5397 } 5398 } 5399 5400 /** 5401 * {@inheritDoc} 5402 */ 5403 @Override 5404 public boolean performHapticFeedback(int effectId, boolean always) { 5405 try { 5406 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5407 } catch (RemoteException e) { 5408 return false; 5409 } 5410 } 5411 5412 /** 5413 * {@inheritDoc} 5414 */ 5415 @Override 5416 public View focusSearch(View focused, int direction) { 5417 checkThread(); 5418 if (!(mView instanceof ViewGroup)) { 5419 return null; 5420 } 5421 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5422 } 5423 5424 public void debug() { 5425 mView.debug(); 5426 } 5427 5428 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5429 String innerPrefix = prefix + " "; 5430 writer.print(prefix); writer.println("ViewRoot:"); 5431 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5432 writer.print(" mRemoved="); writer.println(mRemoved); 5433 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5434 writer.println(mConsumeBatchedInputScheduled); 5435 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5436 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5437 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5438 writer.println(mPendingInputEventCount); 5439 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5440 writer.println(mProcessInputEventsScheduled); 5441 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5442 writer.print(mTraversalScheduled); 5443 if (mTraversalScheduled) { 5444 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5445 } else { 5446 writer.println(); 5447 } 5448 mFirstInputStage.dump(innerPrefix, writer); 5449 5450 mChoreographer.dump(prefix, writer); 5451 5452 writer.print(prefix); writer.println("View Hierarchy:"); 5453 dumpViewHierarchy(innerPrefix, writer, mView); 5454 } 5455 5456 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5457 writer.print(prefix); 5458 if (view == null) { 5459 writer.println("null"); 5460 return; 5461 } 5462 writer.println(view.toString()); 5463 if (!(view instanceof ViewGroup)) { 5464 return; 5465 } 5466 ViewGroup grp = (ViewGroup)view; 5467 final int N = grp.getChildCount(); 5468 if (N <= 0) { 5469 return; 5470 } 5471 prefix = prefix + " "; 5472 for (int i=0; i<N; i++) { 5473 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5474 } 5475 } 5476 5477 public void dumpGfxInfo(int[] info) { 5478 info[0] = info[1] = 0; 5479 if (mView != null) { 5480 getGfxInfo(mView, info); 5481 } 5482 } 5483 5484 private static void getGfxInfo(View view, int[] info) { 5485 RenderNode renderNode = view.mRenderNode; 5486 info[0]++; 5487 if (renderNode != null) { 5488 info[1] += renderNode.getDebugSize(); 5489 } 5490 5491 if (view instanceof ViewGroup) { 5492 ViewGroup group = (ViewGroup) view; 5493 5494 int count = group.getChildCount(); 5495 for (int i = 0; i < count; i++) { 5496 getGfxInfo(group.getChildAt(i), info); 5497 } 5498 } 5499 } 5500 5501 /** 5502 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5503 * @return True, request has been queued. False, request has been completed. 5504 */ 5505 boolean die(boolean immediate) { 5506 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5507 // done by dispatchDetachedFromWindow will cause havoc on return. 5508 if (immediate && !mIsInTraversal) { 5509 doDie(); 5510 return false; 5511 } 5512 5513 if (!mIsDrawing) { 5514 destroyHardwareRenderer(); 5515 } else { 5516 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5517 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5518 } 5519 mHandler.sendEmptyMessage(MSG_DIE); 5520 return true; 5521 } 5522 5523 void doDie() { 5524 checkThread(); 5525 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5526 synchronized (this) { 5527 if (mRemoved) { 5528 return; 5529 } 5530 mRemoved = true; 5531 if (mAdded) { 5532 dispatchDetachedFromWindow(); 5533 } 5534 5535 if (mAdded && !mFirst) { 5536 destroyHardwareRenderer(); 5537 5538 if (mView != null) { 5539 int viewVisibility = mView.getVisibility(); 5540 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5541 if (mWindowAttributesChanged || viewVisibilityChanged) { 5542 // If layout params have been changed, first give them 5543 // to the window manager to make sure it has the correct 5544 // animation info. 5545 try { 5546 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5547 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5548 mWindowSession.finishDrawing(mWindow); 5549 } 5550 } catch (RemoteException e) { 5551 } 5552 } 5553 5554 mSurface.release(); 5555 } 5556 } 5557 5558 mAdded = false; 5559 } 5560 WindowManagerGlobal.getInstance().doRemoveView(this); 5561 } 5562 5563 public void requestUpdateConfiguration(Configuration config) { 5564 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5565 mHandler.sendMessage(msg); 5566 } 5567 5568 public void loadSystemProperties() { 5569 mHandler.post(new Runnable() { 5570 @Override 5571 public void run() { 5572 // Profiling 5573 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5574 profileRendering(mAttachInfo.mHasWindowFocus); 5575 5576 // Hardware rendering 5577 if (mAttachInfo.mHardwareRenderer != null) { 5578 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5579 invalidate(); 5580 } 5581 } 5582 5583 // Layout debugging 5584 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5585 if (layout != mAttachInfo.mDebugLayout) { 5586 mAttachInfo.mDebugLayout = layout; 5587 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5588 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5589 } 5590 } 5591 } 5592 }); 5593 } 5594 5595 private void destroyHardwareRenderer() { 5596 HardwareRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5597 5598 if (hardwareRenderer != null) { 5599 if (mView != null) { 5600 hardwareRenderer.destroyHardwareResources(mView); 5601 } 5602 hardwareRenderer.destroy(); 5603 hardwareRenderer.setRequested(false); 5604 5605 mAttachInfo.mHardwareRenderer = null; 5606 mAttachInfo.mHardwareAccelerated = false; 5607 } 5608 } 5609 5610 public void dispatchFinishInputConnection(InputConnection connection) { 5611 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5612 mHandler.sendMessage(msg); 5613 } 5614 5615 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5616 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 5617 Configuration newConfig) { 5618 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5619 + " contentInsets=" + contentInsets.toShortString() 5620 + " visibleInsets=" + visibleInsets.toShortString() 5621 + " reportDraw=" + reportDraw); 5622 5623 // Tell all listeners that we are resizing the window so that the chrome can get 5624 // updated as fast as possible on a separate thread, 5625 if (mDragResizing) { 5626 synchronized (mWindowCallbacks) { 5627 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 5628 mWindowCallbacks.get(i).onWindowSizeIsChanging(frame); 5629 } 5630 } 5631 } 5632 5633 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5634 if (mTranslator != null) { 5635 mTranslator.translateRectInScreenToAppWindow(frame); 5636 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5637 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5638 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5639 } 5640 SomeArgs args = SomeArgs.obtain(); 5641 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5642 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5643 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5644 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5645 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5646 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5647 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5648 args.arg7 = sameProcessCall ? new Rect(outsets) : outsets; 5649 msg.obj = args; 5650 mHandler.sendMessage(msg); 5651 } 5652 5653 public void dispatchMoved(int newX, int newY) { 5654 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5655 if (mTranslator != null) { 5656 PointF point = new PointF(newX, newY); 5657 mTranslator.translatePointInScreenToAppWindow(point); 5658 newX = (int) (point.x + 0.5); 5659 newY = (int) (point.y + 0.5); 5660 } 5661 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5662 mHandler.sendMessage(msg); 5663 } 5664 5665 /** 5666 * Represents a pending input event that is waiting in a queue. 5667 * 5668 * Input events are processed in serial order by the timestamp specified by 5669 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5670 * one input event to the application at a time and waits for the application 5671 * to finish handling it before delivering the next one. 5672 * 5673 * However, because the application or IME can synthesize and inject multiple 5674 * key events at a time without going through the input dispatcher, we end up 5675 * needing a queue on the application's side. 5676 */ 5677 private static final class QueuedInputEvent { 5678 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5679 public static final int FLAG_DEFERRED = 1 << 1; 5680 public static final int FLAG_FINISHED = 1 << 2; 5681 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5682 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5683 public static final int FLAG_UNHANDLED = 1 << 5; 5684 5685 public QueuedInputEvent mNext; 5686 5687 public InputEvent mEvent; 5688 public InputEventReceiver mReceiver; 5689 public int mFlags; 5690 5691 public boolean shouldSkipIme() { 5692 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5693 return true; 5694 } 5695 return mEvent instanceof MotionEvent 5696 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5697 } 5698 5699 public boolean shouldSendToSynthesizer() { 5700 if ((mFlags & FLAG_UNHANDLED) != 0) { 5701 return true; 5702 } 5703 5704 return false; 5705 } 5706 5707 @Override 5708 public String toString() { 5709 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5710 boolean hasPrevious = false; 5711 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5712 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5713 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5714 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5715 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5716 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5717 if (!hasPrevious) { 5718 sb.append("0"); 5719 } 5720 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5721 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5722 sb.append(", mEvent=" + mEvent + "}"); 5723 return sb.toString(); 5724 } 5725 5726 private boolean flagToString(String name, int flag, 5727 boolean hasPrevious, StringBuilder sb) { 5728 if ((mFlags & flag) != 0) { 5729 if (hasPrevious) { 5730 sb.append("|"); 5731 } 5732 sb.append(name); 5733 return true; 5734 } 5735 return hasPrevious; 5736 } 5737 } 5738 5739 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5740 InputEventReceiver receiver, int flags) { 5741 QueuedInputEvent q = mQueuedInputEventPool; 5742 if (q != null) { 5743 mQueuedInputEventPoolSize -= 1; 5744 mQueuedInputEventPool = q.mNext; 5745 q.mNext = null; 5746 } else { 5747 q = new QueuedInputEvent(); 5748 } 5749 5750 q.mEvent = event; 5751 q.mReceiver = receiver; 5752 q.mFlags = flags; 5753 return q; 5754 } 5755 5756 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5757 q.mEvent = null; 5758 q.mReceiver = null; 5759 5760 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5761 mQueuedInputEventPoolSize += 1; 5762 q.mNext = mQueuedInputEventPool; 5763 mQueuedInputEventPool = q; 5764 } 5765 } 5766 5767 void enqueueInputEvent(InputEvent event) { 5768 enqueueInputEvent(event, null, 0, false); 5769 } 5770 5771 void enqueueInputEvent(InputEvent event, 5772 InputEventReceiver receiver, int flags, boolean processImmediately) { 5773 adjustInputEventForCompatibility(event); 5774 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5775 5776 // Always enqueue the input event in order, regardless of its time stamp. 5777 // We do this because the application or the IME may inject key events 5778 // in response to touch events and we want to ensure that the injected keys 5779 // are processed in the order they were received and we cannot trust that 5780 // the time stamp of injected events are monotonic. 5781 QueuedInputEvent last = mPendingInputEventTail; 5782 if (last == null) { 5783 mPendingInputEventHead = q; 5784 mPendingInputEventTail = q; 5785 } else { 5786 last.mNext = q; 5787 mPendingInputEventTail = q; 5788 } 5789 mPendingInputEventCount += 1; 5790 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5791 mPendingInputEventCount); 5792 5793 if (processImmediately) { 5794 doProcessInputEvents(); 5795 } else { 5796 scheduleProcessInputEvents(); 5797 } 5798 } 5799 5800 private void scheduleProcessInputEvents() { 5801 if (!mProcessInputEventsScheduled) { 5802 mProcessInputEventsScheduled = true; 5803 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5804 msg.setAsynchronous(true); 5805 mHandler.sendMessage(msg); 5806 } 5807 } 5808 5809 void doProcessInputEvents() { 5810 // Deliver all pending input events in the queue. 5811 while (mPendingInputEventHead != null) { 5812 QueuedInputEvent q = mPendingInputEventHead; 5813 mPendingInputEventHead = q.mNext; 5814 if (mPendingInputEventHead == null) { 5815 mPendingInputEventTail = null; 5816 } 5817 q.mNext = null; 5818 5819 mPendingInputEventCount -= 1; 5820 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5821 mPendingInputEventCount); 5822 5823 long eventTime = q.mEvent.getEventTimeNano(); 5824 long oldestEventTime = eventTime; 5825 if (q.mEvent instanceof MotionEvent) { 5826 MotionEvent me = (MotionEvent)q.mEvent; 5827 if (me.getHistorySize() > 0) { 5828 oldestEventTime = me.getHistoricalEventTimeNano(0); 5829 } 5830 } 5831 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 5832 5833 deliverInputEvent(q); 5834 } 5835 5836 // We are done processing all input events that we can process right now 5837 // so we can clear the pending flag immediately. 5838 if (mProcessInputEventsScheduled) { 5839 mProcessInputEventsScheduled = false; 5840 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5841 } 5842 } 5843 5844 private void deliverInputEvent(QueuedInputEvent q) { 5845 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5846 q.mEvent.getSequenceNumber()); 5847 if (mInputEventConsistencyVerifier != null) { 5848 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5849 } 5850 5851 InputStage stage; 5852 if (q.shouldSendToSynthesizer()) { 5853 stage = mSyntheticInputStage; 5854 } else { 5855 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5856 } 5857 5858 if (stage != null) { 5859 stage.deliver(q); 5860 } else { 5861 finishInputEvent(q); 5862 } 5863 } 5864 5865 private void finishInputEvent(QueuedInputEvent q) { 5866 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5867 q.mEvent.getSequenceNumber()); 5868 5869 if (q.mReceiver != null) { 5870 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5871 q.mReceiver.finishInputEvent(q.mEvent, handled); 5872 } else { 5873 q.mEvent.recycleIfNeededAfterDispatch(); 5874 } 5875 5876 recycleQueuedInputEvent(q); 5877 } 5878 5879 private void adjustInputEventForCompatibility(InputEvent e) { 5880 if (mTargetSdkVersion < Build.VERSION_CODES.M && e instanceof MotionEvent) { 5881 MotionEvent motion = (MotionEvent) e; 5882 final int mask = 5883 MotionEvent.BUTTON_STYLUS_PRIMARY | MotionEvent.BUTTON_STYLUS_SECONDARY; 5884 final int buttonState = motion.getButtonState(); 5885 final int compatButtonState = (buttonState & mask) >> 4; 5886 if (compatButtonState != 0) { 5887 motion.setButtonState(buttonState | compatButtonState); 5888 } 5889 } 5890 } 5891 5892 static boolean isTerminalInputEvent(InputEvent event) { 5893 if (event instanceof KeyEvent) { 5894 final KeyEvent keyEvent = (KeyEvent)event; 5895 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5896 } else { 5897 final MotionEvent motionEvent = (MotionEvent)event; 5898 final int action = motionEvent.getAction(); 5899 return action == MotionEvent.ACTION_UP 5900 || action == MotionEvent.ACTION_CANCEL 5901 || action == MotionEvent.ACTION_HOVER_EXIT; 5902 } 5903 } 5904 5905 void scheduleConsumeBatchedInput() { 5906 if (!mConsumeBatchedInputScheduled) { 5907 mConsumeBatchedInputScheduled = true; 5908 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5909 mConsumedBatchedInputRunnable, null); 5910 } 5911 } 5912 5913 void unscheduleConsumeBatchedInput() { 5914 if (mConsumeBatchedInputScheduled) { 5915 mConsumeBatchedInputScheduled = false; 5916 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5917 mConsumedBatchedInputRunnable, null); 5918 } 5919 } 5920 5921 void scheduleConsumeBatchedInputImmediately() { 5922 if (!mConsumeBatchedInputImmediatelyScheduled) { 5923 unscheduleConsumeBatchedInput(); 5924 mConsumeBatchedInputImmediatelyScheduled = true; 5925 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 5926 } 5927 } 5928 5929 void doConsumeBatchedInput(long frameTimeNanos) { 5930 if (mConsumeBatchedInputScheduled) { 5931 mConsumeBatchedInputScheduled = false; 5932 if (mInputEventReceiver != null) { 5933 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 5934 && frameTimeNanos != -1) { 5935 // If we consumed a batch here, we want to go ahead and schedule the 5936 // consumption of batched input events on the next frame. Otherwise, we would 5937 // wait until we have more input events pending and might get starved by other 5938 // things occurring in the process. If the frame time is -1, however, then 5939 // we're in a non-batching mode, so there's no need to schedule this. 5940 scheduleConsumeBatchedInput(); 5941 } 5942 } 5943 doProcessInputEvents(); 5944 } 5945 } 5946 5947 final class TraversalRunnable implements Runnable { 5948 @Override 5949 public void run() { 5950 doTraversal(); 5951 } 5952 } 5953 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5954 5955 final class WindowInputEventReceiver extends InputEventReceiver { 5956 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5957 super(inputChannel, looper); 5958 } 5959 5960 @Override 5961 public void onInputEvent(InputEvent event) { 5962 enqueueInputEvent(event, this, 0, true); 5963 } 5964 5965 @Override 5966 public void onBatchedInputEventPending() { 5967 if (mUnbufferedInputDispatch) { 5968 super.onBatchedInputEventPending(); 5969 } else { 5970 scheduleConsumeBatchedInput(); 5971 } 5972 } 5973 5974 @Override 5975 public void dispose() { 5976 unscheduleConsumeBatchedInput(); 5977 super.dispose(); 5978 } 5979 } 5980 WindowInputEventReceiver mInputEventReceiver; 5981 5982 final class ConsumeBatchedInputRunnable implements Runnable { 5983 @Override 5984 public void run() { 5985 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5986 } 5987 } 5988 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5989 new ConsumeBatchedInputRunnable(); 5990 boolean mConsumeBatchedInputScheduled; 5991 5992 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 5993 @Override 5994 public void run() { 5995 doConsumeBatchedInput(-1); 5996 } 5997 } 5998 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 5999 new ConsumeBatchedInputImmediatelyRunnable(); 6000 boolean mConsumeBatchedInputImmediatelyScheduled; 6001 6002 final class InvalidateOnAnimationRunnable implements Runnable { 6003 private boolean mPosted; 6004 private final ArrayList<View> mViews = new ArrayList<View>(); 6005 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 6006 new ArrayList<AttachInfo.InvalidateInfo>(); 6007 private View[] mTempViews; 6008 private AttachInfo.InvalidateInfo[] mTempViewRects; 6009 6010 public void addView(View view) { 6011 synchronized (this) { 6012 mViews.add(view); 6013 postIfNeededLocked(); 6014 } 6015 } 6016 6017 public void addViewRect(AttachInfo.InvalidateInfo info) { 6018 synchronized (this) { 6019 mViewRects.add(info); 6020 postIfNeededLocked(); 6021 } 6022 } 6023 6024 public void removeView(View view) { 6025 synchronized (this) { 6026 mViews.remove(view); 6027 6028 for (int i = mViewRects.size(); i-- > 0; ) { 6029 AttachInfo.InvalidateInfo info = mViewRects.get(i); 6030 if (info.target == view) { 6031 mViewRects.remove(i); 6032 info.recycle(); 6033 } 6034 } 6035 6036 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 6037 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 6038 mPosted = false; 6039 } 6040 } 6041 } 6042 6043 @Override 6044 public void run() { 6045 final int viewCount; 6046 final int viewRectCount; 6047 synchronized (this) { 6048 mPosted = false; 6049 6050 viewCount = mViews.size(); 6051 if (viewCount != 0) { 6052 mTempViews = mViews.toArray(mTempViews != null 6053 ? mTempViews : new View[viewCount]); 6054 mViews.clear(); 6055 } 6056 6057 viewRectCount = mViewRects.size(); 6058 if (viewRectCount != 0) { 6059 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6060 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6061 mViewRects.clear(); 6062 } 6063 } 6064 6065 for (int i = 0; i < viewCount; i++) { 6066 mTempViews[i].invalidate(); 6067 mTempViews[i] = null; 6068 } 6069 6070 for (int i = 0; i < viewRectCount; i++) { 6071 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6072 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6073 info.recycle(); 6074 } 6075 } 6076 6077 private void postIfNeededLocked() { 6078 if (!mPosted) { 6079 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6080 mPosted = true; 6081 } 6082 } 6083 } 6084 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6085 new InvalidateOnAnimationRunnable(); 6086 6087 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6088 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6089 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6090 } 6091 6092 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6093 long delayMilliseconds) { 6094 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6095 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6096 } 6097 6098 public void dispatchInvalidateOnAnimation(View view) { 6099 mInvalidateOnAnimationRunnable.addView(view); 6100 } 6101 6102 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6103 mInvalidateOnAnimationRunnable.addViewRect(info); 6104 } 6105 6106 public void cancelInvalidate(View view) { 6107 mHandler.removeMessages(MSG_INVALIDATE, view); 6108 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6109 // them to the pool 6110 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6111 mInvalidateOnAnimationRunnable.removeView(view); 6112 } 6113 6114 public void dispatchInputEvent(InputEvent event) { 6115 dispatchInputEvent(event, null); 6116 } 6117 6118 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6119 SomeArgs args = SomeArgs.obtain(); 6120 args.arg1 = event; 6121 args.arg2 = receiver; 6122 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6123 msg.setAsynchronous(true); 6124 mHandler.sendMessage(msg); 6125 } 6126 6127 public void synthesizeInputEvent(InputEvent event) { 6128 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6129 msg.setAsynchronous(true); 6130 mHandler.sendMessage(msg); 6131 } 6132 6133 public void dispatchKeyFromIme(KeyEvent event) { 6134 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6135 msg.setAsynchronous(true); 6136 mHandler.sendMessage(msg); 6137 } 6138 6139 /** 6140 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6141 * 6142 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6143 * passes in. 6144 */ 6145 public void dispatchUnhandledInputEvent(InputEvent event) { 6146 if (event instanceof MotionEvent) { 6147 event = MotionEvent.obtain((MotionEvent) event); 6148 } 6149 synthesizeInputEvent(event); 6150 } 6151 6152 public void dispatchAppVisibility(boolean visible) { 6153 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6154 msg.arg1 = visible ? 1 : 0; 6155 mHandler.sendMessage(msg); 6156 } 6157 6158 public void dispatchGetNewSurface() { 6159 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6160 mHandler.sendMessage(msg); 6161 } 6162 6163 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6164 Message msg = Message.obtain(); 6165 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6166 msg.arg1 = hasFocus ? 1 : 0; 6167 msg.arg2 = inTouchMode ? 1 : 0; 6168 mHandler.sendMessage(msg); 6169 } 6170 6171 public void dispatchWindowShown() { 6172 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6173 } 6174 6175 public void dispatchCloseSystemDialogs(String reason) { 6176 Message msg = Message.obtain(); 6177 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6178 msg.obj = reason; 6179 mHandler.sendMessage(msg); 6180 } 6181 6182 public void dispatchDragEvent(DragEvent event) { 6183 final int what; 6184 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6185 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6186 mHandler.removeMessages(what); 6187 } else { 6188 what = MSG_DISPATCH_DRAG_EVENT; 6189 } 6190 Message msg = mHandler.obtainMessage(what, event); 6191 mHandler.sendMessage(msg); 6192 } 6193 6194 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6195 int localValue, int localChanges) { 6196 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6197 args.seq = seq; 6198 args.globalVisibility = globalVisibility; 6199 args.localValue = localValue; 6200 args.localChanges = localChanges; 6201 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6202 } 6203 6204 public void dispatchCheckFocus() { 6205 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6206 // This will result in a call to checkFocus() below. 6207 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6208 } 6209 } 6210 6211 /** 6212 * Post a callback to send a 6213 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6214 * This event is send at most once every 6215 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6216 */ 6217 private void postSendWindowContentChangedCallback(View source, int changeType) { 6218 if (mSendWindowContentChangedAccessibilityEvent == null) { 6219 mSendWindowContentChangedAccessibilityEvent = 6220 new SendWindowContentChangedAccessibilityEvent(); 6221 } 6222 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6223 } 6224 6225 /** 6226 * Remove a posted callback to send a 6227 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6228 */ 6229 private void removeSendWindowContentChangedCallback() { 6230 if (mSendWindowContentChangedAccessibilityEvent != null) { 6231 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6232 } 6233 } 6234 6235 @Override 6236 public boolean showContextMenuForChild(View originalView) { 6237 return false; 6238 } 6239 6240 @Override 6241 public boolean showContextMenuForChild(View originalView, float x, float y) { 6242 return false; 6243 } 6244 6245 @Override 6246 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6247 return null; 6248 } 6249 6250 @Override 6251 public ActionMode startActionModeForChild( 6252 View originalView, ActionMode.Callback callback, int type) { 6253 return null; 6254 } 6255 6256 @Override 6257 public void createContextMenu(ContextMenu menu) { 6258 } 6259 6260 @Override 6261 public void childDrawableStateChanged(View child) { 6262 } 6263 6264 @Override 6265 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6266 if (mView == null || mStopped || mPausedForTransition) { 6267 return false; 6268 } 6269 // Intercept accessibility focus events fired by virtual nodes to keep 6270 // track of accessibility focus position in such nodes. 6271 final int eventType = event.getEventType(); 6272 switch (eventType) { 6273 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6274 final long sourceNodeId = event.getSourceNodeId(); 6275 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6276 sourceNodeId); 6277 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6278 if (source != null) { 6279 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6280 if (provider != null) { 6281 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6282 sourceNodeId); 6283 final AccessibilityNodeInfo node; 6284 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6285 node = provider.createAccessibilityNodeInfo( 6286 AccessibilityNodeProvider.HOST_VIEW_ID); 6287 } else { 6288 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6289 } 6290 setAccessibilityFocus(source, node); 6291 } 6292 } 6293 } break; 6294 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6295 final long sourceNodeId = event.getSourceNodeId(); 6296 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6297 sourceNodeId); 6298 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6299 if (source != null) { 6300 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6301 if (provider != null) { 6302 setAccessibilityFocus(null, null); 6303 } 6304 } 6305 } break; 6306 6307 6308 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6309 handleWindowContentChangedEvent(event); 6310 } break; 6311 } 6312 mAccessibilityManager.sendAccessibilityEvent(event); 6313 return true; 6314 } 6315 6316 /** 6317 * Updates the focused virtual view, when necessary, in response to a 6318 * content changed event. 6319 * <p> 6320 * This is necessary to get updated bounds after a position change. 6321 * 6322 * @param event an accessibility event of type 6323 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} 6324 */ 6325 private void handleWindowContentChangedEvent(AccessibilityEvent event) { 6326 final View focusedHost = mAccessibilityFocusedHost; 6327 if (focusedHost == null || mAccessibilityFocusedVirtualView == null) { 6328 // No virtual view focused, nothing to do here. 6329 return; 6330 } 6331 6332 final AccessibilityNodeProvider provider = focusedHost.getAccessibilityNodeProvider(); 6333 if (provider == null) { 6334 // Error state: virtual view with no provider. Clear focus. 6335 mAccessibilityFocusedHost = null; 6336 mAccessibilityFocusedVirtualView = null; 6337 focusedHost.clearAccessibilityFocusNoCallbacks(); 6338 return; 6339 } 6340 6341 // We only care about change types that may affect the bounds of the 6342 // focused virtual view. 6343 final int changes = event.getContentChangeTypes(); 6344 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) == 0 6345 && changes != AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6346 return; 6347 } 6348 6349 final long eventSourceNodeId = event.getSourceNodeId(); 6350 final int changedViewId = AccessibilityNodeInfo.getAccessibilityViewId(eventSourceNodeId); 6351 6352 // Search up the tree for subtree containment. 6353 boolean hostInSubtree = false; 6354 View root = mAccessibilityFocusedHost; 6355 while (root != null && !hostInSubtree) { 6356 if (changedViewId == root.getAccessibilityViewId()) { 6357 hostInSubtree = true; 6358 } else { 6359 final ViewParent parent = root.getParent(); 6360 if (parent instanceof View) { 6361 root = (View) parent; 6362 } else { 6363 root = null; 6364 } 6365 } 6366 } 6367 6368 // We care only about changes in subtrees containing the host view. 6369 if (!hostInSubtree) { 6370 return; 6371 } 6372 6373 final long focusedSourceNodeId = mAccessibilityFocusedVirtualView.getSourceNodeId(); 6374 int focusedChildId = AccessibilityNodeInfo.getVirtualDescendantId(focusedSourceNodeId); 6375 if (focusedChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6376 // TODO: Should we clear the focused virtual view? 6377 focusedChildId = AccessibilityNodeProvider.HOST_VIEW_ID; 6378 } 6379 6380 // Refresh the node for the focused virtual view. 6381 final Rect oldBounds = mTempRect; 6382 mAccessibilityFocusedVirtualView.getBoundsInScreen(oldBounds); 6383 mAccessibilityFocusedVirtualView = provider.createAccessibilityNodeInfo(focusedChildId); 6384 if (mAccessibilityFocusedVirtualView == null) { 6385 // Error state: The node no longer exists. Clear focus. 6386 mAccessibilityFocusedHost = null; 6387 focusedHost.clearAccessibilityFocusNoCallbacks(); 6388 6389 // This will probably fail, but try to keep the provider's internal 6390 // state consistent by clearing focus. 6391 provider.performAction(focusedChildId, 6392 AccessibilityAction.ACTION_CLEAR_ACCESSIBILITY_FOCUS.getId(), null); 6393 invalidateRectOnScreen(oldBounds); 6394 } else { 6395 // The node was refreshed, invalidate bounds if necessary. 6396 final Rect newBounds = mAccessibilityFocusedVirtualView.getBoundsInScreen(); 6397 if (!oldBounds.equals(newBounds)) { 6398 oldBounds.union(newBounds); 6399 invalidateRectOnScreen(oldBounds); 6400 } 6401 } 6402 } 6403 6404 @Override 6405 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6406 postSendWindowContentChangedCallback(source, changeType); 6407 } 6408 6409 @Override 6410 public boolean canResolveLayoutDirection() { 6411 return true; 6412 } 6413 6414 @Override 6415 public boolean isLayoutDirectionResolved() { 6416 return true; 6417 } 6418 6419 @Override 6420 public int getLayoutDirection() { 6421 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6422 } 6423 6424 @Override 6425 public boolean canResolveTextDirection() { 6426 return true; 6427 } 6428 6429 @Override 6430 public boolean isTextDirectionResolved() { 6431 return true; 6432 } 6433 6434 @Override 6435 public int getTextDirection() { 6436 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6437 } 6438 6439 @Override 6440 public boolean canResolveTextAlignment() { 6441 return true; 6442 } 6443 6444 @Override 6445 public boolean isTextAlignmentResolved() { 6446 return true; 6447 } 6448 6449 @Override 6450 public int getTextAlignment() { 6451 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6452 } 6453 6454 private View getCommonPredecessor(View first, View second) { 6455 if (mTempHashSet == null) { 6456 mTempHashSet = new HashSet<View>(); 6457 } 6458 HashSet<View> seen = mTempHashSet; 6459 seen.clear(); 6460 View firstCurrent = first; 6461 while (firstCurrent != null) { 6462 seen.add(firstCurrent); 6463 ViewParent firstCurrentParent = firstCurrent.mParent; 6464 if (firstCurrentParent instanceof View) { 6465 firstCurrent = (View) firstCurrentParent; 6466 } else { 6467 firstCurrent = null; 6468 } 6469 } 6470 View secondCurrent = second; 6471 while (secondCurrent != null) { 6472 if (seen.contains(secondCurrent)) { 6473 seen.clear(); 6474 return secondCurrent; 6475 } 6476 ViewParent secondCurrentParent = secondCurrent.mParent; 6477 if (secondCurrentParent instanceof View) { 6478 secondCurrent = (View) secondCurrentParent; 6479 } else { 6480 secondCurrent = null; 6481 } 6482 } 6483 seen.clear(); 6484 return null; 6485 } 6486 6487 void checkThread() { 6488 if (mThread != Thread.currentThread()) { 6489 throw new CalledFromWrongThreadException( 6490 "Only the original thread that created a view hierarchy can touch its views."); 6491 } 6492 } 6493 6494 @Override 6495 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6496 // ViewAncestor never intercepts touch event, so this can be a no-op 6497 } 6498 6499 @Override 6500 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6501 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6502 if (rectangle != null) { 6503 mTempRect.set(rectangle); 6504 mTempRect.offset(0, -mCurScrollY); 6505 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6506 try { 6507 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6508 } catch (RemoteException re) { 6509 /* ignore */ 6510 } 6511 } 6512 return scrolled; 6513 } 6514 6515 @Override 6516 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6517 // Do nothing. 6518 } 6519 6520 @Override 6521 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6522 return false; 6523 } 6524 6525 @Override 6526 public void onStopNestedScroll(View target) { 6527 } 6528 6529 @Override 6530 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6531 } 6532 6533 @Override 6534 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6535 int dxUnconsumed, int dyUnconsumed) { 6536 } 6537 6538 @Override 6539 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6540 } 6541 6542 @Override 6543 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6544 return false; 6545 } 6546 6547 @Override 6548 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6549 return false; 6550 } 6551 6552 @Override 6553 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6554 return false; 6555 } 6556 6557 /** 6558 * Force the window to report its next draw. 6559 * <p> 6560 * This method is only supposed to be used to speed up the interaction from SystemUI and window 6561 * manager when waiting for the first frame to be drawn when turning on the screen. DO NOT USE 6562 * unless you fully understand this interaction. 6563 * @hide 6564 */ 6565 public void setReportNextDraw() { 6566 mReportNextDraw = true; 6567 invalidate(); 6568 } 6569 6570 void changeCanvasOpacity(boolean opaque) { 6571 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6572 if (mAttachInfo.mHardwareRenderer != null) { 6573 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6574 } 6575 } 6576 6577 class TakenSurfaceHolder extends BaseSurfaceHolder { 6578 @Override 6579 public boolean onAllowLockCanvas() { 6580 return mDrawingAllowed; 6581 } 6582 6583 @Override 6584 public void onRelayoutContainer() { 6585 // Not currently interesting -- from changing between fixed and layout size. 6586 } 6587 6588 @Override 6589 public void setFormat(int format) { 6590 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6591 } 6592 6593 @Override 6594 public void setType(int type) { 6595 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6596 } 6597 6598 @Override 6599 public void onUpdateSurface() { 6600 // We take care of format and type changes on our own. 6601 throw new IllegalStateException("Shouldn't be here"); 6602 } 6603 6604 @Override 6605 public boolean isCreating() { 6606 return mIsCreating; 6607 } 6608 6609 @Override 6610 public void setFixedSize(int width, int height) { 6611 throw new UnsupportedOperationException( 6612 "Currently only support sizing from layout"); 6613 } 6614 6615 @Override 6616 public void setKeepScreenOn(boolean screenOn) { 6617 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6618 } 6619 } 6620 6621 static class W extends IWindow.Stub { 6622 private final WeakReference<ViewRootImpl> mViewAncestor; 6623 private final IWindowSession mWindowSession; 6624 6625 W(ViewRootImpl viewAncestor) { 6626 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6627 mWindowSession = viewAncestor.mWindowSession; 6628 } 6629 6630 @Override 6631 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6632 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 6633 Configuration newConfig) { 6634 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6635 if (viewAncestor != null) { 6636 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6637 visibleInsets, stableInsets, outsets, reportDraw, newConfig); 6638 } 6639 } 6640 6641 @Override 6642 public void moved(int newX, int newY) { 6643 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6644 if (viewAncestor != null) { 6645 viewAncestor.dispatchMoved(newX, newY); 6646 } 6647 } 6648 6649 @Override 6650 public void dispatchAppVisibility(boolean visible) { 6651 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6652 if (viewAncestor != null) { 6653 viewAncestor.dispatchAppVisibility(visible); 6654 } 6655 } 6656 6657 @Override 6658 public void dispatchGetNewSurface() { 6659 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6660 if (viewAncestor != null) { 6661 viewAncestor.dispatchGetNewSurface(); 6662 } 6663 } 6664 6665 @Override 6666 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6667 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6668 if (viewAncestor != null) { 6669 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6670 } 6671 } 6672 6673 private static int checkCallingPermission(String permission) { 6674 try { 6675 return ActivityManagerNative.getDefault().checkPermission( 6676 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6677 } catch (RemoteException e) { 6678 return PackageManager.PERMISSION_DENIED; 6679 } 6680 } 6681 6682 @Override 6683 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6684 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6685 if (viewAncestor != null) { 6686 final View view = viewAncestor.mView; 6687 if (view != null) { 6688 if (checkCallingPermission(Manifest.permission.DUMP) != 6689 PackageManager.PERMISSION_GRANTED) { 6690 throw new SecurityException("Insufficient permissions to invoke" 6691 + " executeCommand() from pid=" + Binder.getCallingPid() 6692 + ", uid=" + Binder.getCallingUid()); 6693 } 6694 6695 OutputStream clientStream = null; 6696 try { 6697 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6698 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6699 } catch (IOException e) { 6700 e.printStackTrace(); 6701 } finally { 6702 if (clientStream != null) { 6703 try { 6704 clientStream.close(); 6705 } catch (IOException e) { 6706 e.printStackTrace(); 6707 } 6708 } 6709 } 6710 } 6711 } 6712 } 6713 6714 @Override 6715 public void closeSystemDialogs(String reason) { 6716 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6717 if (viewAncestor != null) { 6718 viewAncestor.dispatchCloseSystemDialogs(reason); 6719 } 6720 } 6721 6722 @Override 6723 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6724 boolean sync) { 6725 if (sync) { 6726 try { 6727 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6728 } catch (RemoteException e) { 6729 } 6730 } 6731 } 6732 6733 @Override 6734 public void dispatchWallpaperCommand(String action, int x, int y, 6735 int z, Bundle extras, boolean sync) { 6736 if (sync) { 6737 try { 6738 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6739 } catch (RemoteException e) { 6740 } 6741 } 6742 } 6743 6744 /* Drag/drop */ 6745 @Override 6746 public void dispatchDragEvent(DragEvent event) { 6747 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6748 if (viewAncestor != null) { 6749 viewAncestor.dispatchDragEvent(event); 6750 } 6751 } 6752 6753 @Override 6754 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6755 int localValue, int localChanges) { 6756 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6757 if (viewAncestor != null) { 6758 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6759 localValue, localChanges); 6760 } 6761 } 6762 6763 @Override 6764 public void dispatchWindowShown() { 6765 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6766 if (viewAncestor != null) { 6767 viewAncestor.dispatchWindowShown(); 6768 } 6769 } 6770 } 6771 6772 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6773 public CalledFromWrongThreadException(String msg) { 6774 super(msg); 6775 } 6776 } 6777 6778 static HandlerActionQueue getRunQueue() { 6779 HandlerActionQueue rq = sRunQueues.get(); 6780 if (rq != null) { 6781 return rq; 6782 } 6783 rq = new HandlerActionQueue(); 6784 sRunQueues.set(rq); 6785 return rq; 6786 } 6787 6788 /** 6789 * Start a drag resizing which will inform all listeners that a window resize is taking place. 6790 */ 6791 private void startDragResizing(Rect initialBounds) { 6792 if (!mDragResizing) { 6793 mDragResizing = true; 6794 synchronized (mWindowCallbacks) { 6795 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 6796 mWindowCallbacks.get(i).onWindowDragResizeStart(initialBounds); 6797 } 6798 } 6799 mFullRedrawNeeded = true; 6800 } 6801 } 6802 6803 /** 6804 * End a drag resize which will inform all listeners that a window resize has ended. 6805 */ 6806 private void endDragResizing() { 6807 if (mDragResizing) { 6808 mDragResizing = false; 6809 synchronized (mWindowCallbacks) { 6810 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 6811 mWindowCallbacks.get(i).onWindowDragResizeEnd(); 6812 } 6813 } 6814 mFullRedrawNeeded = true; 6815 } 6816 } 6817 6818 private boolean updateContentDrawBounds() { 6819 boolean updated = false; 6820 synchronized (mWindowCallbacks) { 6821 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 6822 updated |= mWindowCallbacks.get(i).onContentDrawn( 6823 mWindowAttributes.surfaceInsets.left, 6824 mWindowAttributes.surfaceInsets.top, 6825 mWidth, mHeight); 6826 } 6827 } 6828 return updated | (mDragResizing && mReportNextDraw); 6829 } 6830 6831 private void requestDrawWindow() { 6832 if (mReportNextDraw) { 6833 mWindowDrawCountDown = new CountDownLatch(mWindowCallbacks.size()); 6834 } 6835 synchronized (mWindowCallbacks) { 6836 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 6837 mWindowCallbacks.get(i).onRequestDraw(mReportNextDraw); 6838 } 6839 } 6840 } 6841 6842 /** 6843 * Class for managing the accessibility interaction connection 6844 * based on the global accessibility state. 6845 */ 6846 final class AccessibilityInteractionConnectionManager 6847 implements AccessibilityStateChangeListener { 6848 @Override 6849 public void onAccessibilityStateChanged(boolean enabled) { 6850 if (enabled) { 6851 ensureConnection(); 6852 if (mAttachInfo.mHasWindowFocus) { 6853 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6854 View focusedView = mView.findFocus(); 6855 if (focusedView != null && focusedView != mView) { 6856 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6857 } 6858 } 6859 } else { 6860 ensureNoConnection(); 6861 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6862 } 6863 } 6864 6865 public void ensureConnection() { 6866 final boolean registered = 6867 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6868 if (!registered) { 6869 mAttachInfo.mAccessibilityWindowId = 6870 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6871 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6872 } 6873 } 6874 6875 public void ensureNoConnection() { 6876 final boolean registered = 6877 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6878 if (registered) { 6879 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6880 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6881 } 6882 } 6883 } 6884 6885 final class HighContrastTextManager implements HighTextContrastChangeListener { 6886 HighContrastTextManager() { 6887 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 6888 } 6889 @Override 6890 public void onHighTextContrastStateChanged(boolean enabled) { 6891 mAttachInfo.mHighContrastText = enabled; 6892 6893 // Destroy Displaylists so they can be recreated with high contrast recordings 6894 destroyHardwareResources(); 6895 6896 // Schedule redraw, which will rerecord + redraw all text 6897 invalidate(); 6898 } 6899 } 6900 6901 /** 6902 * This class is an interface this ViewAncestor provides to the 6903 * AccessibilityManagerService to the latter can interact with 6904 * the view hierarchy in this ViewAncestor. 6905 */ 6906 static final class AccessibilityInteractionConnection 6907 extends IAccessibilityInteractionConnection.Stub { 6908 private final WeakReference<ViewRootImpl> mViewRootImpl; 6909 6910 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6911 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6912 } 6913 6914 @Override 6915 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6916 Region interactiveRegion, int interactionId, 6917 IAccessibilityInteractionConnectionCallback callback, int flags, 6918 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6919 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6920 if (viewRootImpl != null && viewRootImpl.mView != null) { 6921 viewRootImpl.getAccessibilityInteractionController() 6922 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6923 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6924 interrogatingTid, spec); 6925 } else { 6926 // We cannot make the call and notify the caller so it does not wait. 6927 try { 6928 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6929 } catch (RemoteException re) { 6930 /* best effort - ignore */ 6931 } 6932 } 6933 } 6934 6935 @Override 6936 public void performAccessibilityAction(long accessibilityNodeId, int action, 6937 Bundle arguments, int interactionId, 6938 IAccessibilityInteractionConnectionCallback callback, int flags, 6939 int interrogatingPid, long interrogatingTid) { 6940 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6941 if (viewRootImpl != null && viewRootImpl.mView != null) { 6942 viewRootImpl.getAccessibilityInteractionController() 6943 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6944 interactionId, callback, flags, interrogatingPid, interrogatingTid); 6945 } else { 6946 // We cannot make the call and notify the caller so it does not wait. 6947 try { 6948 callback.setPerformAccessibilityActionResult(false, interactionId); 6949 } catch (RemoteException re) { 6950 /* best effort - ignore */ 6951 } 6952 } 6953 } 6954 6955 @Override 6956 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6957 String viewId, Region interactiveRegion, int interactionId, 6958 IAccessibilityInteractionConnectionCallback callback, int flags, 6959 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6960 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6961 if (viewRootImpl != null && viewRootImpl.mView != null) { 6962 viewRootImpl.getAccessibilityInteractionController() 6963 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6964 viewId, interactiveRegion, interactionId, callback, flags, 6965 interrogatingPid, interrogatingTid, spec); 6966 } else { 6967 // We cannot make the call and notify the caller so it does not wait. 6968 try { 6969 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6970 } catch (RemoteException re) { 6971 /* best effort - ignore */ 6972 } 6973 } 6974 } 6975 6976 @Override 6977 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6978 Region interactiveRegion, int interactionId, 6979 IAccessibilityInteractionConnectionCallback callback, int flags, 6980 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6981 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6982 if (viewRootImpl != null && viewRootImpl.mView != null) { 6983 viewRootImpl.getAccessibilityInteractionController() 6984 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6985 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6986 interrogatingTid, spec); 6987 } else { 6988 // We cannot make the call and notify the caller so it does not wait. 6989 try { 6990 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6991 } catch (RemoteException re) { 6992 /* best effort - ignore */ 6993 } 6994 } 6995 } 6996 6997 @Override 6998 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 6999 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7000 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7001 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7002 if (viewRootImpl != null && viewRootImpl.mView != null) { 7003 viewRootImpl.getAccessibilityInteractionController() 7004 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 7005 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7006 spec); 7007 } else { 7008 // We cannot make the call and notify the caller so it does not wait. 7009 try { 7010 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7011 } catch (RemoteException re) { 7012 /* best effort - ignore */ 7013 } 7014 } 7015 } 7016 7017 @Override 7018 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 7019 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7020 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7021 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7022 if (viewRootImpl != null && viewRootImpl.mView != null) { 7023 viewRootImpl.getAccessibilityInteractionController() 7024 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 7025 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7026 spec); 7027 } else { 7028 // We cannot make the call and notify the caller so it does not wait. 7029 try { 7030 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7031 } catch (RemoteException re) { 7032 /* best effort - ignore */ 7033 } 7034 } 7035 } 7036 } 7037 7038 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 7039 private int mChangeTypes = 0; 7040 7041 public View mSource; 7042 public long mLastEventTimeMillis; 7043 7044 @Override 7045 public void run() { 7046 // The accessibility may be turned off while we were waiting so check again. 7047 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 7048 mLastEventTimeMillis = SystemClock.uptimeMillis(); 7049 AccessibilityEvent event = AccessibilityEvent.obtain(); 7050 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 7051 event.setContentChangeTypes(mChangeTypes); 7052 mSource.sendAccessibilityEventUnchecked(event); 7053 } else { 7054 mLastEventTimeMillis = 0; 7055 } 7056 // In any case reset to initial state. 7057 mSource.resetSubtreeAccessibilityStateChanged(); 7058 mSource = null; 7059 mChangeTypes = 0; 7060 } 7061 7062 public void runOrPost(View source, int changeType) { 7063 if (mSource != null) { 7064 // If there is no common predecessor, then mSource points to 7065 // a removed view, hence in this case always prefer the source. 7066 View predecessor = getCommonPredecessor(mSource, source); 7067 mSource = (predecessor != null) ? predecessor : source; 7068 mChangeTypes |= changeType; 7069 return; 7070 } 7071 mSource = source; 7072 mChangeTypes = changeType; 7073 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 7074 final long minEventIntevalMillis = 7075 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 7076 if (timeSinceLastMillis >= minEventIntevalMillis) { 7077 mSource.removeCallbacks(this); 7078 run(); 7079 } else { 7080 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 7081 } 7082 } 7083 } 7084} 7085