ViewRootImpl.java revision 8d94835b4901fb01804bee3a1be8d05dbf510f65
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.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.hardware.display.DisplayManager; 40import android.hardware.display.DisplayManager.DisplayListener; 41import android.media.AudioManager; 42import android.os.Binder; 43import android.os.Build; 44import android.os.Bundle; 45import android.os.Debug; 46import android.os.Handler; 47import android.os.Looper; 48import android.os.Message; 49import android.os.ParcelFileDescriptor; 50import android.os.Process; 51import android.os.RemoteException; 52import android.os.SystemClock; 53import android.os.SystemProperties; 54import android.os.Trace; 55import android.util.AndroidRuntimeException; 56import android.util.DisplayMetrics; 57import android.util.Log; 58import android.util.Slog; 59import android.util.TimeUtils; 60import android.util.TypedValue; 61import android.view.Surface.OutOfResourcesException; 62import android.view.View.AttachInfo; 63import android.view.View.MeasureSpec; 64import android.view.accessibility.AccessibilityEvent; 65import android.view.accessibility.AccessibilityManager; 66import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 67import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 68import android.view.accessibility.AccessibilityNodeInfo; 69import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction; 70import android.view.accessibility.AccessibilityNodeProvider; 71import android.view.accessibility.IAccessibilityInteractionConnection; 72import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 73import android.view.animation.AccelerateDecelerateInterpolator; 74import android.view.animation.Interpolator; 75import android.view.inputmethod.InputConnection; 76import android.view.inputmethod.InputMethodManager; 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.util.ScreenShapeHelper; 83import com.android.internal.view.BaseSurfaceHolder; 84import com.android.internal.view.RootViewSurfaceTaker; 85 86import java.io.FileDescriptor; 87import java.io.IOException; 88import java.io.OutputStream; 89import java.io.PrintWriter; 90import java.lang.ref.WeakReference; 91import java.util.ArrayList; 92import java.util.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 this system property to true to force the view hierarchy to render 121 * at 60 Hz. This can be used to measure the potential framerate. 122 */ 123 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 124 125 // properties used by emulator to determine display shape 126 public static final String PROPERTY_EMULATOR_WIN_OUTSET_BOTTOM_PX = 127 "ro.emu.win_outset_bottom_px"; 128 129 /** 130 * Maximum time we allow the user to roll the trackball enough to generate 131 * a key event, before resetting the counters. 132 */ 133 static final int MAX_TRACKBALL_DELAY = 250; 134 135 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 136 137 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 138 static boolean sFirstDrawComplete = false; 139 140 static final ArrayList<ComponentCallbacks> sConfigCallbacks 141 = new ArrayList<ComponentCallbacks>(); 142 143 final Context mContext; 144 final IWindowSession mWindowSession; 145 final Display mDisplay; 146 final DisplayManager mDisplayManager; 147 final String mBasePackageName; 148 149 final int[] mTmpLocation = new int[2]; 150 151 final TypedValue mTmpValue = new TypedValue(); 152 153 final Thread mThread; 154 155 final WindowLeaked mLocation; 156 157 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 158 159 final W mWindow; 160 161 final int mTargetSdkVersion; 162 163 int mSeq; 164 165 View mView; 166 167 View mAccessibilityFocusedHost; 168 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 169 170 int mViewVisibility; 171 boolean mAppVisible = true; 172 int mOrigWindowType = -1; 173 174 // Set to true if the owner of this window is in the stopped state, 175 // so the window should no longer be active. 176 boolean mStopped = false; 177 178 // Set to true to stop input during an Activity Transition. 179 boolean mPausedForTransition = false; 180 181 boolean mLastInCompatMode = false; 182 183 SurfaceHolder.Callback2 mSurfaceHolderCallback; 184 BaseSurfaceHolder mSurfaceHolder; 185 boolean mIsCreating; 186 boolean mDrawingAllowed; 187 188 final Region mTransparentRegion; 189 final Region mPreviousTransparentRegion; 190 191 int mWidth; 192 int mHeight; 193 Rect mDirty; 194 boolean mIsAnimating; 195 196 CompatibilityInfo.Translator mTranslator; 197 198 final View.AttachInfo mAttachInfo; 199 InputChannel mInputChannel; 200 InputQueue.Callback mInputQueueCallback; 201 InputQueue mInputQueue; 202 FallbackEventHandler mFallbackEventHandler; 203 Choreographer mChoreographer; 204 205 final Rect mTempRect; // used in the transaction to not thrash the heap. 206 final Rect mVisRect; // used to retrieve visible rect of focused view. 207 208 boolean mTraversalScheduled; 209 int mTraversalBarrier; 210 boolean mWillDrawSoon; 211 /** Set to true while in performTraversals for detecting when die(true) is called from internal 212 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 213 boolean mIsInTraversal; 214 boolean mApplyInsetsRequested; 215 boolean mLayoutRequested; 216 boolean mFirst; 217 boolean mReportNextDraw; 218 boolean mFullRedrawNeeded; 219 boolean mNewSurfaceNeeded; 220 boolean mHasHadWindowFocus; 221 boolean mLastWasImTarget; 222 boolean mWindowsAnimating; 223 boolean mDrawDuringWindowsAnimating; 224 225 /** How many frames the app is still allowed to draw when a window animation is happening. */ 226 private int mRemainingFrameCount; 227 boolean mIsDrawing; 228 int mLastSystemUiVisibility; 229 int mClientWindowLayoutFlags; 230 boolean mLastOverscanRequested; 231 232 // Pool of queued input events. 233 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 234 private QueuedInputEvent mQueuedInputEventPool; 235 private int mQueuedInputEventPoolSize; 236 237 /* Input event queue. 238 * Pending input events are input events waiting to be delivered to the input stages 239 * and handled by the application. 240 */ 241 QueuedInputEvent mPendingInputEventHead; 242 QueuedInputEvent mPendingInputEventTail; 243 int mPendingInputEventCount; 244 boolean mProcessInputEventsScheduled; 245 boolean mUnbufferedInputDispatch; 246 String mPendingInputEventQueueLengthCounterName = "pq"; 247 248 InputStage mFirstInputStage; 249 InputStage mFirstPostImeInputStage; 250 InputStage mSyntheticInputStage; 251 252 boolean mWindowAttributesChanged = false; 253 int mWindowAttributesChangesFlag = 0; 254 255 // These can be accessed by any thread, must be protected with a lock. 256 // Surface can never be reassigned or cleared (use Surface.clear()). 257 final Surface mSurface = new Surface(); 258 259 boolean mAdded; 260 boolean mAddedTouchMode; 261 262 final DisplayAdjustments mDisplayAdjustments; 263 264 // These are accessed by multiple threads. 265 final Rect mWinFrame; // frame given by window manager. 266 267 final Rect mPendingOverscanInsets = new Rect(); 268 final Rect mPendingVisibleInsets = new Rect(); 269 final Rect mPendingStableInsets = new Rect(); 270 final Rect mPendingContentInsets = new Rect(); 271 final Rect mPendingOutsets = new Rect(); 272 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 273 = new ViewTreeObserver.InternalInsetsInfo(); 274 275 final Rect mDispatchContentInsets = new Rect(); 276 final Rect mDispatchStableInsets = new Rect(); 277 278 private WindowInsets mLastWindowInsets; 279 280 final Configuration mLastConfiguration = new Configuration(); 281 final Configuration mPendingConfiguration = new Configuration(); 282 283 boolean mScrollMayChange; 284 int mSoftInputMode; 285 WeakReference<View> mLastScrolledFocus; 286 int mScrollY; 287 int mCurScrollY; 288 Scroller mScroller; 289 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 290 private ArrayList<LayoutTransition> mPendingTransitions; 291 292 final ViewConfiguration mViewConfiguration; 293 294 /* Drag/drop */ 295 ClipDescription mDragDescription; 296 View mCurrentDragView; 297 volatile Object mLocalDragState; 298 final PointF mDragPoint = new PointF(); 299 final PointF mLastTouchPoint = new PointF(); 300 301 private boolean mProfileRendering; 302 private Choreographer.FrameCallback mRenderProfiler; 303 private boolean mRenderProfilingEnabled; 304 305 // Variables to track frames per second, enabled via DEBUG_FPS flag 306 private long mFpsStartTime = -1; 307 private long mFpsPrevTime = -1; 308 private int mFpsNumFrames; 309 310 /** 311 * see {@link #playSoundEffect(int)} 312 */ 313 AudioManager mAudioManager; 314 315 final AccessibilityManager mAccessibilityManager; 316 317 AccessibilityInteractionController mAccessibilityInteractionController; 318 319 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 320 HighContrastTextManager mHighContrastTextManager; 321 322 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 323 324 HashSet<View> mTempHashSet; 325 326 private final int mDensity; 327 private final int mNoncompatDensity; 328 329 private boolean mInLayout = false; 330 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 331 boolean mHandlingLayoutInLayoutRequest = false; 332 333 private int mViewLayoutDirectionInitial; 334 335 /** Set to true once doDie() has been called. */ 336 private boolean mRemoved; 337 338 /** 339 * Consistency verifier for debugging purposes. 340 */ 341 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 342 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 343 new InputEventConsistencyVerifier(this, 0) : null; 344 345 static final class SystemUiVisibilityInfo { 346 int seq; 347 int globalVisibility; 348 int localValue; 349 int localChanges; 350 } 351 352 public ViewRootImpl(Context context, Display display) { 353 mContext = context; 354 mWindowSession = WindowManagerGlobal.getWindowSession(); 355 mDisplay = display; 356 mBasePackageName = context.getBasePackageName(); 357 358 mDisplayAdjustments = display.getDisplayAdjustments(); 359 360 mThread = Thread.currentThread(); 361 mLocation = new WindowLeaked(null); 362 mLocation.fillInStackTrace(); 363 mWidth = -1; 364 mHeight = -1; 365 mDirty = new Rect(); 366 mTempRect = new Rect(); 367 mVisRect = new Rect(); 368 mWinFrame = new Rect(); 369 mWindow = new W(this); 370 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 371 mViewVisibility = View.GONE; 372 mTransparentRegion = new Region(); 373 mPreviousTransparentRegion = new Region(); 374 mFirst = true; // true for the first time the view is added 375 mAdded = false; 376 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 377 mAccessibilityManager = AccessibilityManager.getInstance(context); 378 mAccessibilityInteractionConnectionManager = 379 new AccessibilityInteractionConnectionManager(); 380 mAccessibilityManager.addAccessibilityStateChangeListener( 381 mAccessibilityInteractionConnectionManager); 382 mHighContrastTextManager = new HighContrastTextManager(); 383 mAccessibilityManager.addHighTextContrastStateChangeListener( 384 mHighContrastTextManager); 385 mViewConfiguration = ViewConfiguration.get(context); 386 mDensity = context.getResources().getDisplayMetrics().densityDpi; 387 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 388 mFallbackEventHandler = new PhoneFallbackEventHandler(context); 389 mChoreographer = Choreographer.getInstance(); 390 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 391 loadSystemProperties(); 392 } 393 394 public static void addFirstDrawHandler(Runnable callback) { 395 synchronized (sFirstDrawHandlers) { 396 if (!sFirstDrawComplete) { 397 sFirstDrawHandlers.add(callback); 398 } 399 } 400 } 401 402 public static void addConfigCallback(ComponentCallbacks callback) { 403 synchronized (sConfigCallbacks) { 404 sConfigCallbacks.add(callback); 405 } 406 } 407 408 // FIXME for perf testing only 409 private boolean mProfile = false; 410 411 /** 412 * Call this to profile the next traversal call. 413 * FIXME for perf testing only. Remove eventually 414 */ 415 public void profile() { 416 mProfile = true; 417 } 418 419 /** 420 * Indicates whether we are in touch mode. Calling this method triggers an IPC 421 * call and should be avoided whenever possible. 422 * 423 * @return True, if the device is in touch mode, false otherwise. 424 * 425 * @hide 426 */ 427 static boolean isInTouchMode() { 428 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 429 if (windowSession != null) { 430 try { 431 return windowSession.getInTouchMode(); 432 } catch (RemoteException e) { 433 } 434 } 435 return false; 436 } 437 438 /** 439 * We have one child 440 */ 441 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 442 synchronized (this) { 443 if (mView == null) { 444 mView = view; 445 446 mAttachInfo.mDisplayState = mDisplay.getState(); 447 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 448 449 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 450 mFallbackEventHandler.setView(view); 451 mWindowAttributes.copyFrom(attrs); 452 if (mWindowAttributes.packageName == null) { 453 mWindowAttributes.packageName = mBasePackageName; 454 } 455 attrs = mWindowAttributes; 456 // Keep track of the actual window flags supplied by the client. 457 mClientWindowLayoutFlags = attrs.flags; 458 459 setAccessibilityFocus(null, null); 460 461 if (view instanceof RootViewSurfaceTaker) { 462 mSurfaceHolderCallback = 463 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 464 if (mSurfaceHolderCallback != null) { 465 mSurfaceHolder = new TakenSurfaceHolder(); 466 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 467 } 468 } 469 470 // Compute surface insets required to draw at specified Z value. 471 // TODO: Use real shadow insets for a constant max Z. 472 if (!attrs.hasManualSurfaceInsets) { 473 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 474 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 475 } 476 477 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 478 mTranslator = compatibilityInfo.getTranslator(); 479 480 // If the application owns the surface, don't enable hardware acceleration 481 if (mSurfaceHolder == null) { 482 enableHardwareAcceleration(attrs); 483 } 484 485 boolean restore = false; 486 if (mTranslator != null) { 487 mSurface.setCompatibilityTranslator(mTranslator); 488 restore = true; 489 attrs.backup(); 490 mTranslator.translateWindowLayout(attrs); 491 } 492 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 493 494 if (!compatibilityInfo.supportsScreen()) { 495 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 496 mLastInCompatMode = true; 497 } 498 499 mSoftInputMode = attrs.softInputMode; 500 mWindowAttributesChanged = true; 501 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 502 mAttachInfo.mRootView = view; 503 mAttachInfo.mScalingRequired = mTranslator != null; 504 mAttachInfo.mApplicationScale = 505 mTranslator == null ? 1.0f : mTranslator.applicationScale; 506 if (panelParentView != null) { 507 mAttachInfo.mPanelParentWindowToken 508 = panelParentView.getApplicationWindowToken(); 509 } 510 mAdded = true; 511 int res; /* = WindowManagerImpl.ADD_OKAY; */ 512 513 // Schedule the first layout -before- adding to the window 514 // manager, to make sure we do the relayout before receiving 515 // any other events from the system. 516 requestLayout(); 517 if ((mWindowAttributes.inputFeatures 518 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 519 mInputChannel = new InputChannel(); 520 } 521 try { 522 mOrigWindowType = mWindowAttributes.type; 523 mAttachInfo.mRecomputeGlobalAttributes = true; 524 collectViewAttributes(); 525 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 526 getHostVisibility(), mDisplay.getDisplayId(), 527 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, 528 mAttachInfo.mOutsets, mInputChannel); 529 } catch (RemoteException e) { 530 mAdded = false; 531 mView = null; 532 mAttachInfo.mRootView = null; 533 mInputChannel = null; 534 mFallbackEventHandler.setView(null); 535 unscheduleTraversals(); 536 setAccessibilityFocus(null, null); 537 throw new RuntimeException("Adding window failed", e); 538 } finally { 539 if (restore) { 540 attrs.restore(); 541 } 542 } 543 544 if (mTranslator != null) { 545 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 546 } 547 mPendingOverscanInsets.set(0, 0, 0, 0); 548 mPendingContentInsets.set(mAttachInfo.mContentInsets); 549 mPendingStableInsets.set(mAttachInfo.mStableInsets); 550 mPendingVisibleInsets.set(0, 0, 0, 0); 551 try { 552 relayoutWindow(attrs, getHostVisibility(), false); 553 } catch (RemoteException e) { 554 if (DEBUG_LAYOUT) Log.e(TAG, "failed to relayoutWindow", e); 555 } 556 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 557 if (res < WindowManagerGlobal.ADD_OKAY) { 558 mAttachInfo.mRootView = null; 559 mAdded = false; 560 mFallbackEventHandler.setView(null); 561 unscheduleTraversals(); 562 setAccessibilityFocus(null, null); 563 switch (res) { 564 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 565 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 566 throw new WindowManager.BadTokenException( 567 "Unable to add window -- token " + attrs.token 568 + " is not valid; is your activity running?"); 569 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 570 throw new WindowManager.BadTokenException( 571 "Unable to add window -- token " + attrs.token 572 + " is not for an application"); 573 case WindowManagerGlobal.ADD_APP_EXITING: 574 throw new WindowManager.BadTokenException( 575 "Unable to add window -- app for token " + attrs.token 576 + " is exiting"); 577 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 578 throw new WindowManager.BadTokenException( 579 "Unable to add window -- window " + mWindow 580 + " has already been added"); 581 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 582 // Silently ignore -- we would have just removed it 583 // right away, anyway. 584 return; 585 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 586 throw new WindowManager.BadTokenException( 587 "Unable to add window " + mWindow + 588 " -- another window of this type already exists"); 589 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 590 throw new WindowManager.BadTokenException( 591 "Unable to add window " + mWindow + 592 " -- permission denied for this window type"); 593 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 594 throw new WindowManager.InvalidDisplayException( 595 "Unable to add window " + mWindow + 596 " -- the specified display can not be found"); 597 case WindowManagerGlobal.ADD_INVALID_TYPE: 598 throw new WindowManager.InvalidDisplayException( 599 "Unable to add window " + mWindow 600 + " -- the specified window type is not valid"); 601 } 602 throw new RuntimeException( 603 "Unable to add window -- unknown error code " + res); 604 } 605 606 if (view instanceof RootViewSurfaceTaker) { 607 mInputQueueCallback = 608 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 609 } 610 if (mInputChannel != null) { 611 if (mInputQueueCallback != null) { 612 mInputQueue = new InputQueue(); 613 mInputQueueCallback.onInputQueueCreated(mInputQueue); 614 } 615 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 616 Looper.myLooper()); 617 } 618 619 view.assignParent(this); 620 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 621 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 622 623 if (mAccessibilityManager.isEnabled()) { 624 mAccessibilityInteractionConnectionManager.ensureConnection(); 625 } 626 627 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 628 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 629 } 630 631 // Set up the input pipeline. 632 CharSequence counterSuffix = attrs.getTitle(); 633 mSyntheticInputStage = new SyntheticInputStage(); 634 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 635 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 636 "aq:native-post-ime:" + counterSuffix); 637 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 638 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 639 "aq:ime:" + counterSuffix); 640 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 641 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 642 "aq:native-pre-ime:" + counterSuffix); 643 644 mFirstInputStage = nativePreImeStage; 645 mFirstPostImeInputStage = earlyPostImeStage; 646 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 647 } 648 } 649 } 650 651 /** Whether the window is in local focus mode or not */ 652 private boolean isInLocalFocusMode() { 653 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 654 } 655 656 public int getWindowFlags() { 657 return mWindowAttributes.flags; 658 } 659 660 public int getDisplayId() { 661 return mDisplay.getDisplayId(); 662 } 663 664 public CharSequence getTitle() { 665 return mWindowAttributes.getTitle(); 666 } 667 668 void destroyHardwareResources() { 669 if (mAttachInfo.mHardwareRenderer != null) { 670 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 671 mAttachInfo.mHardwareRenderer.destroy(); 672 } 673 } 674 675 public void detachFunctor(long functor) { 676 if (mAttachInfo.mHardwareRenderer != null) { 677 // Fence so that any pending invokeFunctor() messages will be processed 678 // before we return from detachFunctor. 679 mAttachInfo.mHardwareRenderer.stopDrawing(); 680 } 681 } 682 683 /** 684 * Schedules the functor for execution in either kModeProcess or 685 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 686 * 687 * @param functor The native functor to invoke 688 * @param waitForCompletion If true, this will not return until the functor 689 * has invoked. If false, the functor may be invoked 690 * asynchronously. 691 */ 692 public void invokeFunctor(long functor, boolean waitForCompletion) { 693 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 694 } 695 696 public void registerAnimatingRenderNode(RenderNode animator) { 697 if (mAttachInfo.mHardwareRenderer != null) { 698 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 699 } else { 700 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 701 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 702 } 703 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 704 } 705 } 706 707 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 708 mAttachInfo.mHardwareAccelerated = false; 709 mAttachInfo.mHardwareAccelerationRequested = false; 710 711 // Don't enable hardware acceleration when the application is in compatibility mode 712 if (mTranslator != null) return; 713 714 // Try to enable hardware acceleration if requested 715 final boolean hardwareAccelerated = 716 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 717 718 if (hardwareAccelerated) { 719 if (!HardwareRenderer.isAvailable()) { 720 return; 721 } 722 723 // Persistent processes (including the system) should not do 724 // accelerated rendering on low-end devices. In that case, 725 // sRendererDisabled will be set. In addition, the system process 726 // itself should never do accelerated rendering. In that case, both 727 // sRendererDisabled and sSystemRendererDisabled are set. When 728 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 729 // can be used by code on the system process to escape that and enable 730 // HW accelerated drawing. (This is basically for the lock screen.) 731 732 final boolean fakeHwAccelerated = (attrs.privateFlags & 733 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 734 final boolean forceHwAccelerated = (attrs.privateFlags & 735 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 736 737 if (fakeHwAccelerated) { 738 // This is exclusively for the preview windows the window manager 739 // shows for launching applications, so they will look more like 740 // the app being launched. 741 mAttachInfo.mHardwareAccelerationRequested = true; 742 } else if (!HardwareRenderer.sRendererDisabled 743 || (HardwareRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 744 if (mAttachInfo.mHardwareRenderer != null) { 745 mAttachInfo.mHardwareRenderer.destroy(); 746 } 747 748 final Rect insets = attrs.surfaceInsets; 749 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 750 || insets.top != 0 || insets.bottom != 0; 751 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 752 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(mContext, translucent); 753 if (mAttachInfo.mHardwareRenderer != null) { 754 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 755 mAttachInfo.mHardwareAccelerated = 756 mAttachInfo.mHardwareAccelerationRequested = true; 757 } 758 } 759 } 760 } 761 762 public View getView() { 763 return mView; 764 } 765 766 final WindowLeaked getLocation() { 767 return mLocation; 768 } 769 770 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 771 synchronized (this) { 772 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 773 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 774 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 775 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 776 final int oldSoftInputMode = mWindowAttributes.softInputMode; 777 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 778 779 // Keep track of the actual window flags supplied by the client. 780 mClientWindowLayoutFlags = attrs.flags; 781 782 // Preserve compatible window flag if exists. 783 final int compatibleWindowFlag = mWindowAttributes.privateFlags 784 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 785 786 // Transfer over system UI visibility values as they carry current state. 787 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 788 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 789 790 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 791 if ((mWindowAttributesChangesFlag 792 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 793 // Recompute system ui visibility. 794 mAttachInfo.mRecomputeGlobalAttributes = true; 795 } 796 if (mWindowAttributes.packageName == null) { 797 mWindowAttributes.packageName = mBasePackageName; 798 } 799 mWindowAttributes.privateFlags |= compatibleWindowFlag; 800 801 // Restore old surface insets. 802 mWindowAttributes.surfaceInsets.set( 803 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 804 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 805 806 applyKeepScreenOnFlag(mWindowAttributes); 807 808 if (newView) { 809 mSoftInputMode = attrs.softInputMode; 810 requestLayout(); 811 } 812 813 // Don't lose the mode we last auto-computed. 814 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 815 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 816 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 817 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 818 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 819 } 820 821 mWindowAttributesChanged = true; 822 scheduleTraversals(); 823 } 824 } 825 826 void handleAppVisibility(boolean visible) { 827 if (mAppVisible != visible) { 828 mAppVisible = visible; 829 scheduleTraversals(); 830 if (!mAppVisible) { 831 WindowManagerGlobal.trimForeground(); 832 } 833 } 834 } 835 836 void handleGetNewSurface() { 837 mNewSurfaceNeeded = true; 838 mFullRedrawNeeded = true; 839 scheduleTraversals(); 840 } 841 842 private final DisplayListener mDisplayListener = new DisplayListener() { 843 @Override 844 public void onDisplayChanged(int displayId) { 845 if (mView != null && mDisplay.getDisplayId() == displayId) { 846 final int oldDisplayState = mAttachInfo.mDisplayState; 847 final int newDisplayState = mDisplay.getState(); 848 if (oldDisplayState != newDisplayState) { 849 mAttachInfo.mDisplayState = newDisplayState; 850 pokeDrawLockIfNeeded(); 851 if (oldDisplayState != Display.STATE_UNKNOWN) { 852 final int oldScreenState = toViewScreenState(oldDisplayState); 853 final int newScreenState = toViewScreenState(newDisplayState); 854 if (oldScreenState != newScreenState) { 855 mView.dispatchScreenStateChanged(newScreenState); 856 } 857 if (oldDisplayState == Display.STATE_OFF) { 858 // Draw was suppressed so we need to for it to happen here. 859 mFullRedrawNeeded = true; 860 scheduleTraversals(); 861 } 862 } 863 } 864 } 865 } 866 867 @Override 868 public void onDisplayRemoved(int displayId) { 869 } 870 871 @Override 872 public void onDisplayAdded(int displayId) { 873 } 874 875 private int toViewScreenState(int displayState) { 876 return displayState == Display.STATE_OFF ? 877 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 878 } 879 }; 880 881 void pokeDrawLockIfNeeded() { 882 final int displayState = mAttachInfo.mDisplayState; 883 if (mView != null && mAdded && mTraversalScheduled 884 && (displayState == Display.STATE_DOZE 885 || displayState == Display.STATE_DOZE_SUSPEND)) { 886 try { 887 mWindowSession.pokeDrawLock(mWindow); 888 } catch (RemoteException ex) { 889 // System server died, oh well. 890 } 891 } 892 } 893 894 @Override 895 public void requestFitSystemWindows() { 896 checkThread(); 897 mApplyInsetsRequested = true; 898 scheduleTraversals(); 899 } 900 901 @Override 902 public void requestLayout() { 903 if (!mHandlingLayoutInLayoutRequest) { 904 checkThread(); 905 mLayoutRequested = true; 906 scheduleTraversals(); 907 } 908 } 909 910 @Override 911 public boolean isLayoutRequested() { 912 return mLayoutRequested; 913 } 914 915 void invalidate() { 916 mDirty.set(0, 0, mWidth, mHeight); 917 if (!mWillDrawSoon) { 918 scheduleTraversals(); 919 } 920 } 921 922 void invalidateWorld(View view) { 923 view.invalidate(); 924 if (view instanceof ViewGroup) { 925 ViewGroup parent = (ViewGroup) view; 926 for (int i = 0; i < parent.getChildCount(); i++) { 927 invalidateWorld(parent.getChildAt(i)); 928 } 929 } 930 } 931 932 @Override 933 public void invalidateChild(View child, Rect dirty) { 934 invalidateChildInParent(null, dirty); 935 } 936 937 @Override 938 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 939 checkThread(); 940 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 941 942 if (dirty == null) { 943 invalidate(); 944 return null; 945 } else if (dirty.isEmpty() && !mIsAnimating) { 946 return null; 947 } 948 949 if (mCurScrollY != 0 || mTranslator != null) { 950 mTempRect.set(dirty); 951 dirty = mTempRect; 952 if (mCurScrollY != 0) { 953 dirty.offset(0, -mCurScrollY); 954 } 955 if (mTranslator != null) { 956 mTranslator.translateRectInAppWindowToScreen(dirty); 957 } 958 if (mAttachInfo.mScalingRequired) { 959 dirty.inset(-1, -1); 960 } 961 } 962 963 invalidateRectOnScreen(dirty); 964 965 return null; 966 } 967 968 private void invalidateRectOnScreen(Rect dirty) { 969 final Rect localDirty = mDirty; 970 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 971 mAttachInfo.mSetIgnoreDirtyState = true; 972 mAttachInfo.mIgnoreDirtyState = true; 973 } 974 975 // Add the new dirty rect to the current one 976 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 977 // Intersect with the bounds of the window to skip 978 // updates that lie outside of the visible region 979 final float appScale = mAttachInfo.mApplicationScale; 980 final boolean intersected = localDirty.intersect(0, 0, 981 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 982 if (!intersected) { 983 localDirty.setEmpty(); 984 } 985 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 986 scheduleTraversals(); 987 } 988 } 989 990 void setWindowStopped(boolean stopped) { 991 if (mStopped != stopped) { 992 mStopped = stopped; 993 if (!mStopped) { 994 scheduleTraversals(); 995 } 996 } 997 } 998 999 /** 1000 * Block the input events during an Activity Transition. The KEYCODE_BACK event is allowed 1001 * through to allow quick reversal of the Activity Transition. 1002 * 1003 * @param paused true to pause, false to resume. 1004 */ 1005 public void setPausedForTransition(boolean paused) { 1006 mPausedForTransition = paused; 1007 } 1008 1009 @Override 1010 public ViewParent getParent() { 1011 return null; 1012 } 1013 1014 @Override 1015 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 1016 if (child != mView) { 1017 throw new RuntimeException("child is not mine, honest!"); 1018 } 1019 // Note: don't apply scroll offset, because we want to know its 1020 // visibility in the virtual canvas being given to the view hierarchy. 1021 return r.intersect(0, 0, mWidth, mHeight); 1022 } 1023 1024 @Override 1025 public void bringChildToFront(View child) { 1026 } 1027 1028 int getHostVisibility() { 1029 return mAppVisible ? mView.getVisibility() : View.GONE; 1030 } 1031 1032 /** 1033 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1034 * This list will be cleared after the transitions on the list are start()'ed. These 1035 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1036 * happens during the layout phase of traversal, which we want to complete before any of the 1037 * animations are started (because those animations may side-effect properties that layout 1038 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1039 * to the list and it is started just prior to starting the drawing phase of traversal. 1040 * 1041 * @param transition The LayoutTransition to be started on the next traversal. 1042 * 1043 * @hide 1044 */ 1045 public void requestTransitionStart(LayoutTransition transition) { 1046 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1047 if (mPendingTransitions == null) { 1048 mPendingTransitions = new ArrayList<LayoutTransition>(); 1049 } 1050 mPendingTransitions.add(transition); 1051 } 1052 } 1053 1054 /** 1055 * Notifies the HardwareRenderer that a new frame will be coming soon. 1056 * Currently only {@link ThreadedRenderer} cares about this, and uses 1057 * this knowledge to adjust the scheduling of off-thread animations 1058 */ 1059 void notifyRendererOfFramePending() { 1060 if (mAttachInfo.mHardwareRenderer != null) { 1061 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1062 } 1063 } 1064 1065 void scheduleTraversals() { 1066 if (!mTraversalScheduled) { 1067 mTraversalScheduled = true; 1068 mTraversalBarrier = mHandler.getLooper().getQueue().postSyncBarrier(); 1069 mChoreographer.postCallback( 1070 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1071 if (!mUnbufferedInputDispatch) { 1072 scheduleConsumeBatchedInput(); 1073 } 1074 notifyRendererOfFramePending(); 1075 pokeDrawLockIfNeeded(); 1076 } 1077 } 1078 1079 void unscheduleTraversals() { 1080 if (mTraversalScheduled) { 1081 mTraversalScheduled = false; 1082 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1083 mChoreographer.removeCallbacks( 1084 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1085 } 1086 } 1087 1088 void doTraversal() { 1089 if (mTraversalScheduled) { 1090 mTraversalScheduled = false; 1091 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1092 1093 if (mProfile) { 1094 Debug.startMethodTracing("ViewAncestor"); 1095 } 1096 1097 performTraversals(); 1098 1099 if (mProfile) { 1100 Debug.stopMethodTracing(); 1101 mProfile = false; 1102 } 1103 } 1104 } 1105 1106 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1107 // Update window's global keep screen on flag: if a view has requested 1108 // that the screen be kept on, then it is always set; otherwise, it is 1109 // set to whatever the client last requested for the global state. 1110 if (mAttachInfo.mKeepScreenOn) { 1111 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1112 } else { 1113 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1114 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1115 } 1116 } 1117 1118 private boolean collectViewAttributes() { 1119 if (mAttachInfo.mRecomputeGlobalAttributes) { 1120 //Log.i(TAG, "Computing view hierarchy attributes!"); 1121 mAttachInfo.mRecomputeGlobalAttributes = false; 1122 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1123 mAttachInfo.mKeepScreenOn = false; 1124 mAttachInfo.mSystemUiVisibility = 0; 1125 mAttachInfo.mHasSystemUiListeners = false; 1126 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1127 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1128 WindowManager.LayoutParams params = mWindowAttributes; 1129 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1130 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1131 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1132 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1133 applyKeepScreenOnFlag(params); 1134 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1135 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1136 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1137 return true; 1138 } 1139 } 1140 return false; 1141 } 1142 1143 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1144 int vis = 0; 1145 // Translucent decor window flags imply stable system ui visibility. 1146 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1147 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1148 } 1149 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1150 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1151 } 1152 return vis; 1153 } 1154 1155 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1156 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1157 int childWidthMeasureSpec; 1158 int childHeightMeasureSpec; 1159 boolean windowSizeMayChange = false; 1160 1161 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1162 "Measuring " + host + " in display " + desiredWindowWidth 1163 + "x" + desiredWindowHeight + "..."); 1164 1165 boolean goodMeasure = false; 1166 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1167 // On large screens, we don't want to allow dialogs to just 1168 // stretch to fill the entire width of the screen to display 1169 // one line of text. First try doing the layout at a smaller 1170 // size to see if it will fit. 1171 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1172 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1173 int baseSize = 0; 1174 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1175 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1176 } 1177 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1178 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1179 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1180 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1181 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1182 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1183 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1184 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1185 goodMeasure = true; 1186 } else { 1187 // Didn't fit in that size... try expanding a bit. 1188 baseSize = (baseSize+desiredWindowWidth)/2; 1189 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1190 + baseSize); 1191 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1192 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1193 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1194 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1195 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1196 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1197 goodMeasure = true; 1198 } 1199 } 1200 } 1201 } 1202 1203 if (!goodMeasure) { 1204 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1205 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1206 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1207 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1208 windowSizeMayChange = true; 1209 } 1210 } 1211 1212 if (DBG) { 1213 System.out.println("======================================"); 1214 System.out.println("performTraversals -- after measure"); 1215 host.debug(); 1216 } 1217 1218 return windowSizeMayChange; 1219 } 1220 1221 /** 1222 * Modifies the input matrix such that it maps view-local coordinates to 1223 * on-screen coordinates. 1224 * 1225 * @param m input matrix to modify 1226 */ 1227 void transformMatrixToGlobal(Matrix m) { 1228 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1229 } 1230 1231 /** 1232 * Modifies the input matrix such that it maps on-screen coordinates to 1233 * view-local coordinates. 1234 * 1235 * @param m input matrix to modify 1236 */ 1237 void transformMatrixToLocal(Matrix m) { 1238 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1239 } 1240 1241 /* package */ WindowInsets getWindowInsets(boolean forceConstruct) { 1242 if (mLastWindowInsets == null || forceConstruct) { 1243 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1244 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1245 Rect contentInsets = mDispatchContentInsets; 1246 Rect stableInsets = mDispatchStableInsets; 1247 // For dispatch we preserve old logic, but for direct requests from Views we allow to 1248 // immediately use pending insets. 1249 if (!forceConstruct 1250 && (!mPendingContentInsets.equals(contentInsets) || 1251 !mPendingStableInsets.equals(stableInsets))) { 1252 contentInsets = mPendingContentInsets; 1253 stableInsets = mPendingStableInsets; 1254 } 1255 Rect outsets = mAttachInfo.mOutsets; 1256 if (outsets.left > 0 || outsets.top > 0 || outsets.right > 0 || outsets.bottom > 0) { 1257 contentInsets = new Rect(contentInsets.left + outsets.left, 1258 contentInsets.top + outsets.top, contentInsets.right + outsets.right, 1259 contentInsets.bottom + outsets.bottom); 1260 } 1261 mLastWindowInsets = new WindowInsets(contentInsets, 1262 null /* windowDecorInsets */, stableInsets, 1263 mContext.getResources().getConfiguration().isScreenRound()); 1264 } 1265 return mLastWindowInsets; 1266 } 1267 1268 void dispatchApplyInsets(View host) { 1269 host.dispatchApplyWindowInsets(getWindowInsets(true /* forceConstruct */)); 1270 } 1271 1272 private void performTraversals() { 1273 // cache mView since it is used so much below... 1274 final View host = mView; 1275 1276 if (DBG) { 1277 System.out.println("======================================"); 1278 System.out.println("performTraversals"); 1279 host.debug(); 1280 } 1281 1282 if (host == null || !mAdded) 1283 return; 1284 1285 mIsInTraversal = true; 1286 mWillDrawSoon = true; 1287 boolean windowSizeMayChange = false; 1288 boolean newSurface = false; 1289 boolean surfaceChanged = false; 1290 WindowManager.LayoutParams lp = mWindowAttributes; 1291 1292 int desiredWindowWidth; 1293 int desiredWindowHeight; 1294 1295 final int viewVisibility = getHostVisibility(); 1296 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1297 || mNewSurfaceNeeded; 1298 1299 WindowManager.LayoutParams params = null; 1300 if (mWindowAttributesChanged) { 1301 mWindowAttributesChanged = false; 1302 surfaceChanged = true; 1303 params = lp; 1304 } 1305 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1306 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1307 params = lp; 1308 mFullRedrawNeeded = true; 1309 mLayoutRequested = true; 1310 if (mLastInCompatMode) { 1311 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1312 mLastInCompatMode = false; 1313 } else { 1314 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1315 mLastInCompatMode = true; 1316 } 1317 } 1318 1319 mWindowAttributesChangesFlag = 0; 1320 1321 Rect frame = mWinFrame; 1322 if (mFirst) { 1323 mFullRedrawNeeded = true; 1324 mLayoutRequested = true; 1325 1326 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1327 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1328 // NOTE -- system code, won't try to do compat mode. 1329 Point size = new Point(); 1330 mDisplay.getRealSize(size); 1331 desiredWindowWidth = size.x; 1332 desiredWindowHeight = size.y; 1333 } else { 1334 DisplayMetrics packageMetrics = 1335 mView.getContext().getResources().getDisplayMetrics(); 1336 desiredWindowWidth = packageMetrics.widthPixels; 1337 desiredWindowHeight = packageMetrics.heightPixels; 1338 } 1339 1340 // We used to use the following condition to choose 32 bits drawing caches: 1341 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1342 // However, windows are now always 32 bits by default, so choose 32 bits 1343 mAttachInfo.mUse32BitDrawingCache = true; 1344 mAttachInfo.mHasWindowFocus = false; 1345 mAttachInfo.mWindowVisibility = viewVisibility; 1346 mAttachInfo.mRecomputeGlobalAttributes = false; 1347 viewVisibilityChanged = false; 1348 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1349 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1350 // Set the layout direction if it has not been set before (inherit is the default) 1351 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1352 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1353 } 1354 host.dispatchAttachedToWindow(mAttachInfo, 0); 1355 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1356 dispatchApplyInsets(host); 1357 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1358 1359 } else { 1360 desiredWindowWidth = frame.width(); 1361 desiredWindowHeight = frame.height(); 1362 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1363 if (DEBUG_ORIENTATION) Log.v(TAG, 1364 "View " + host + " resized to: " + frame); 1365 mFullRedrawNeeded = true; 1366 mLayoutRequested = true; 1367 windowSizeMayChange = true; 1368 } 1369 } 1370 1371 if (viewVisibilityChanged) { 1372 mAttachInfo.mWindowVisibility = viewVisibility; 1373 host.dispatchWindowVisibilityChanged(viewVisibility); 1374 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1375 destroyHardwareResources(); 1376 } 1377 if (viewVisibility == View.GONE) { 1378 // After making a window gone, we will count it as being 1379 // shown for the first time the next time it gets focus. 1380 mHasHadWindowFocus = false; 1381 } 1382 } 1383 1384 // Non-visible windows can't hold accessibility focus. 1385 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1386 host.clearAccessibilityFocus(); 1387 } 1388 1389 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1390 getRunQueue().executeActions(mAttachInfo.mHandler); 1391 1392 boolean insetsChanged = false; 1393 1394 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1395 if (layoutRequested) { 1396 1397 final Resources res = mView.getContext().getResources(); 1398 1399 if (mFirst) { 1400 // make sure touch mode code executes by setting cached value 1401 // to opposite of the added touch mode. 1402 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1403 ensureTouchModeLocally(mAddedTouchMode); 1404 } else { 1405 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1406 insetsChanged = true; 1407 } 1408 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1409 insetsChanged = true; 1410 } 1411 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1412 insetsChanged = true; 1413 } 1414 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1415 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1416 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1417 + mAttachInfo.mVisibleInsets); 1418 } 1419 if (!mPendingOutsets.equals(mAttachInfo.mOutsets)) { 1420 insetsChanged = true; 1421 } 1422 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1423 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1424 windowSizeMayChange = true; 1425 1426 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1427 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1428 // NOTE -- system code, won't try to do compat mode. 1429 Point size = new Point(); 1430 mDisplay.getRealSize(size); 1431 desiredWindowWidth = size.x; 1432 desiredWindowHeight = size.y; 1433 } else { 1434 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1435 desiredWindowWidth = packageMetrics.widthPixels; 1436 desiredWindowHeight = packageMetrics.heightPixels; 1437 } 1438 } 1439 } 1440 1441 // Ask host how big it wants to be 1442 windowSizeMayChange |= measureHierarchy(host, lp, res, 1443 desiredWindowWidth, desiredWindowHeight); 1444 } 1445 1446 if (collectViewAttributes()) { 1447 params = lp; 1448 } 1449 if (mAttachInfo.mForceReportNewAttributes) { 1450 mAttachInfo.mForceReportNewAttributes = false; 1451 params = lp; 1452 } 1453 1454 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1455 mAttachInfo.mViewVisibilityChanged = false; 1456 int resizeMode = mSoftInputMode & 1457 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1458 // If we are in auto resize mode, then we need to determine 1459 // what mode to use now. 1460 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1461 final int N = mAttachInfo.mScrollContainers.size(); 1462 for (int i=0; i<N; i++) { 1463 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1464 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1465 } 1466 } 1467 if (resizeMode == 0) { 1468 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1469 } 1470 if ((lp.softInputMode & 1471 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1472 lp.softInputMode = (lp.softInputMode & 1473 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1474 resizeMode; 1475 params = lp; 1476 } 1477 } 1478 } 1479 1480 if (params != null) { 1481 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1482 if (!PixelFormat.formatHasAlpha(params.format)) { 1483 params.format = PixelFormat.TRANSLUCENT; 1484 } 1485 } 1486 mAttachInfo.mOverscanRequested = (params.flags 1487 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1488 } 1489 1490 if (mApplyInsetsRequested) { 1491 mApplyInsetsRequested = false; 1492 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1493 dispatchApplyInsets(host); 1494 if (mLayoutRequested) { 1495 // Short-circuit catching a new layout request here, so 1496 // we don't need to go through two layout passes when things 1497 // change due to fitting system windows, which can happen a lot. 1498 windowSizeMayChange |= measureHierarchy(host, lp, 1499 mView.getContext().getResources(), 1500 desiredWindowWidth, desiredWindowHeight); 1501 } 1502 } 1503 1504 if (layoutRequested) { 1505 // Clear this now, so that if anything requests a layout in the 1506 // rest of this function we will catch it and re-run a full 1507 // layout pass. 1508 mLayoutRequested = false; 1509 } 1510 1511 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1512 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1513 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1514 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1515 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1516 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1517 1518 // Determine whether to compute insets. 1519 // If there are no inset listeners remaining then we may still need to compute 1520 // insets in case the old insets were non-empty and must be reset. 1521 final boolean computesInternalInsets = 1522 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1523 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1524 1525 boolean insetsPending = false; 1526 int relayoutResult = 0; 1527 1528 if (mFirst || windowShouldResize || insetsChanged || 1529 viewVisibilityChanged || params != null) { 1530 1531 if (viewVisibility == View.VISIBLE) { 1532 // If this window is giving internal insets to the window 1533 // manager, and it is being added or changing its visibility, 1534 // then we want to first give the window manager "fake" 1535 // insets to cause it to effectively ignore the content of 1536 // the window during layout. This avoids it briefly causing 1537 // other windows to resize/move based on the raw frame of the 1538 // window, waiting until we can finish laying out this window 1539 // and get back to the window manager with the ultimately 1540 // computed insets. 1541 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1542 } 1543 1544 if (mSurfaceHolder != null) { 1545 mSurfaceHolder.mSurfaceLock.lock(); 1546 mDrawingAllowed = true; 1547 } 1548 1549 boolean hwInitialized = false; 1550 boolean contentInsetsChanged = false; 1551 boolean hadSurface = mSurface.isValid(); 1552 1553 try { 1554 if (DEBUG_LAYOUT) { 1555 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1556 host.getMeasuredHeight() + ", params=" + params); 1557 } 1558 1559 if (mAttachInfo.mHardwareRenderer != null) { 1560 // relayoutWindow may decide to destroy mSurface. As that decision 1561 // happens in WindowManager service, we need to be defensive here 1562 // and stop using the surface in case it gets destroyed. 1563 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1564 // Animations were running so we need to push a frame 1565 // to resume them 1566 mDirty.set(0, 0, mWidth, mHeight); 1567 } 1568 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1569 } 1570 final int surfaceGenerationId = mSurface.getGenerationId(); 1571 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1572 1573 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1574 + " overscan=" + mPendingOverscanInsets.toShortString() 1575 + " content=" + mPendingContentInsets.toShortString() 1576 + " visible=" + mPendingVisibleInsets.toShortString() 1577 + " visible=" + mPendingStableInsets.toShortString() 1578 + " outsets=" + mPendingOutsets.toShortString() 1579 + " surface=" + mSurface); 1580 1581 if (mPendingConfiguration.seq != 0) { 1582 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1583 + mPendingConfiguration); 1584 updateConfiguration(mPendingConfiguration, !mFirst); 1585 mPendingConfiguration.seq = 0; 1586 } 1587 1588 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1589 mAttachInfo.mOverscanInsets); 1590 contentInsetsChanged = !mPendingContentInsets.equals( 1591 mAttachInfo.mContentInsets); 1592 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1593 mAttachInfo.mVisibleInsets); 1594 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1595 mAttachInfo.mStableInsets); 1596 final boolean outsetsChanged = !mPendingOutsets.equals(mAttachInfo.mOutsets); 1597 if (contentInsetsChanged) { 1598 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1599 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1600 + mAttachInfo.mContentInsets); 1601 } 1602 if (overscanInsetsChanged) { 1603 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1604 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1605 + mAttachInfo.mOverscanInsets); 1606 // Need to relayout with content insets. 1607 contentInsetsChanged = true; 1608 } 1609 if (stableInsetsChanged) { 1610 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1611 if (DEBUG_LAYOUT) Log.v(TAG, "Decor insets changing to: " 1612 + mAttachInfo.mStableInsets); 1613 // Need to relayout with content insets. 1614 contentInsetsChanged = true; 1615 } 1616 if (contentInsetsChanged || mLastSystemUiVisibility != 1617 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1618 || mLastOverscanRequested != mAttachInfo.mOverscanRequested 1619 || outsetsChanged) { 1620 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1621 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1622 mAttachInfo.mOutsets.set(mPendingOutsets); 1623 mApplyInsetsRequested = false; 1624 dispatchApplyInsets(host); 1625 } 1626 if (visibleInsetsChanged) { 1627 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1628 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1629 + mAttachInfo.mVisibleInsets); 1630 } 1631 1632 if (!hadSurface) { 1633 if (mSurface.isValid()) { 1634 // If we are creating a new surface, then we need to 1635 // completely redraw it. Also, when we get to the 1636 // point of drawing it we will hold off and schedule 1637 // a new traversal instead. This is so we can tell the 1638 // window manager about all of the windows being displayed 1639 // before actually drawing them, so it can display then 1640 // all at once. 1641 newSurface = true; 1642 mFullRedrawNeeded = true; 1643 mPreviousTransparentRegion.setEmpty(); 1644 1645 // Only initialize up-front if transparent regions are not 1646 // requested, otherwise defer to see if the entire window 1647 // will be transparent 1648 if (mAttachInfo.mHardwareRenderer != null) { 1649 try { 1650 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1651 mSurface); 1652 if (hwInitialized && (host.mPrivateFlags 1653 & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) == 0) { 1654 // Don't pre-allocate if transparent regions 1655 // are requested as they may not be needed 1656 mSurface.allocateBuffers(); 1657 } 1658 } catch (OutOfResourcesException e) { 1659 handleOutOfResourcesException(e); 1660 return; 1661 } 1662 } 1663 } 1664 } else if (!mSurface.isValid()) { 1665 // If the surface has been removed, then reset the scroll 1666 // positions. 1667 if (mLastScrolledFocus != null) { 1668 mLastScrolledFocus.clear(); 1669 } 1670 mScrollY = mCurScrollY = 0; 1671 if (mView instanceof RootViewSurfaceTaker) { 1672 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1673 } 1674 if (mScroller != null) { 1675 mScroller.abortAnimation(); 1676 } 1677 // Our surface is gone 1678 if (mAttachInfo.mHardwareRenderer != null && 1679 mAttachInfo.mHardwareRenderer.isEnabled()) { 1680 mAttachInfo.mHardwareRenderer.destroy(); 1681 } 1682 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1683 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1684 mFullRedrawNeeded = true; 1685 try { 1686 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1687 } catch (OutOfResourcesException e) { 1688 handleOutOfResourcesException(e); 1689 return; 1690 } 1691 } 1692 } catch (RemoteException e) { 1693 } 1694 1695 if (DEBUG_ORIENTATION) Log.v( 1696 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1697 1698 mAttachInfo.mWindowLeft = frame.left; 1699 mAttachInfo.mWindowTop = frame.top; 1700 1701 // !!FIXME!! This next section handles the case where we did not get the 1702 // window size we asked for. We should avoid this by getting a maximum size from 1703 // the window session beforehand. 1704 if (mWidth != frame.width() || mHeight != frame.height()) { 1705 mWidth = frame.width(); 1706 mHeight = frame.height(); 1707 } 1708 1709 if (mSurfaceHolder != null) { 1710 // The app owns the surface; tell it about what is going on. 1711 if (mSurface.isValid()) { 1712 // XXX .copyFrom() doesn't work! 1713 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1714 mSurfaceHolder.mSurface = mSurface; 1715 } 1716 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1717 mSurfaceHolder.mSurfaceLock.unlock(); 1718 if (mSurface.isValid()) { 1719 if (!hadSurface) { 1720 mSurfaceHolder.ungetCallbacks(); 1721 1722 mIsCreating = true; 1723 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1724 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1725 if (callbacks != null) { 1726 for (SurfaceHolder.Callback c : callbacks) { 1727 c.surfaceCreated(mSurfaceHolder); 1728 } 1729 } 1730 surfaceChanged = true; 1731 } 1732 if (surfaceChanged) { 1733 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1734 lp.format, mWidth, mHeight); 1735 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1736 if (callbacks != null) { 1737 for (SurfaceHolder.Callback c : callbacks) { 1738 c.surfaceChanged(mSurfaceHolder, lp.format, 1739 mWidth, mHeight); 1740 } 1741 } 1742 } 1743 mIsCreating = false; 1744 } else if (hadSurface) { 1745 mSurfaceHolder.ungetCallbacks(); 1746 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1747 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1748 if (callbacks != null) { 1749 for (SurfaceHolder.Callback c : callbacks) { 1750 c.surfaceDestroyed(mSurfaceHolder); 1751 } 1752 } 1753 mSurfaceHolder.mSurfaceLock.lock(); 1754 try { 1755 mSurfaceHolder.mSurface = new Surface(); 1756 } finally { 1757 mSurfaceHolder.mSurfaceLock.unlock(); 1758 } 1759 } 1760 } 1761 1762 final HardwareRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 1763 if (hardwareRenderer != null && hardwareRenderer.isEnabled()) { 1764 if (hwInitialized 1765 || mWidth != hardwareRenderer.getWidth() 1766 || mHeight != hardwareRenderer.getHeight()) { 1767 hardwareRenderer.setup(mWidth, mHeight, mAttachInfo, 1768 mWindowAttributes.surfaceInsets); 1769 if (!hwInitialized) { 1770 hardwareRenderer.invalidate(mSurface); 1771 mFullRedrawNeeded = true; 1772 } 1773 } 1774 } 1775 1776 if (!mStopped || mReportNextDraw) { 1777 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1778 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1779 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1780 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1781 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1782 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1783 1784 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1785 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1786 + " mHeight=" + mHeight 1787 + " measuredHeight=" + host.getMeasuredHeight() 1788 + " coveredInsetsChanged=" + contentInsetsChanged); 1789 1790 // Ask host how big it wants to be 1791 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1792 1793 // Implementation of weights from WindowManager.LayoutParams 1794 // We just grow the dimensions as needed and re-measure if 1795 // needs be 1796 int width = host.getMeasuredWidth(); 1797 int height = host.getMeasuredHeight(); 1798 boolean measureAgain = false; 1799 1800 if (lp.horizontalWeight > 0.0f) { 1801 width += (int) ((mWidth - width) * lp.horizontalWeight); 1802 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1803 MeasureSpec.EXACTLY); 1804 measureAgain = true; 1805 } 1806 if (lp.verticalWeight > 0.0f) { 1807 height += (int) ((mHeight - height) * lp.verticalWeight); 1808 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1809 MeasureSpec.EXACTLY); 1810 measureAgain = true; 1811 } 1812 1813 if (measureAgain) { 1814 if (DEBUG_LAYOUT) Log.v(TAG, 1815 "And hey let's measure once more: width=" + width 1816 + " height=" + height); 1817 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1818 } 1819 1820 layoutRequested = true; 1821 } 1822 } 1823 } else { 1824 // Not the first pass and no window/insets/visibility change but the window 1825 // may have moved and we need check that and if so to update the left and right 1826 // in the attach info. We translate only the window frame since on window move 1827 // the window manager tells us only for the new frame but the insets are the 1828 // same and we do not want to translate them more than once. 1829 1830 // TODO: Well, we are checking whether the frame has changed similarly 1831 // to how this is done for the insets. This is however incorrect since 1832 // the insets and the frame are translated. For example, the old frame 1833 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1834 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1835 // true since we are comparing a not translated value to a translated one. 1836 // This scenario is rare but we may want to fix that. 1837 1838 final boolean windowMoved = (mAttachInfo.mWindowLeft != frame.left 1839 || mAttachInfo.mWindowTop != frame.top); 1840 if (windowMoved) { 1841 if (mTranslator != null) { 1842 mTranslator.translateRectInScreenToAppWinFrame(frame); 1843 } 1844 mAttachInfo.mWindowLeft = frame.left; 1845 mAttachInfo.mWindowTop = frame.top; 1846 1847 // Update the light position for the new window offsets. 1848 if (mAttachInfo.mHardwareRenderer != null) { 1849 mAttachInfo.mHardwareRenderer.setLightCenter(mAttachInfo); 1850 } 1851 } 1852 } 1853 1854 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 1855 boolean triggerGlobalLayoutListener = didLayout 1856 || mAttachInfo.mRecomputeGlobalAttributes; 1857 if (didLayout) { 1858 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1859 1860 // By this point all views have been sized and positioned 1861 // We can compute the transparent area 1862 1863 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1864 // start out transparent 1865 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1866 host.getLocationInWindow(mTmpLocation); 1867 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1868 mTmpLocation[0] + host.mRight - host.mLeft, 1869 mTmpLocation[1] + host.mBottom - host.mTop); 1870 1871 host.gatherTransparentRegion(mTransparentRegion); 1872 if (mTranslator != null) { 1873 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1874 } 1875 1876 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1877 mPreviousTransparentRegion.set(mTransparentRegion); 1878 mFullRedrawNeeded = true; 1879 // reconfigure window manager 1880 try { 1881 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1882 } catch (RemoteException e) { 1883 } 1884 } 1885 } 1886 1887 if (DBG) { 1888 System.out.println("======================================"); 1889 System.out.println("performTraversals -- after setFrame"); 1890 host.debug(); 1891 } 1892 } 1893 1894 if (triggerGlobalLayoutListener) { 1895 mAttachInfo.mRecomputeGlobalAttributes = false; 1896 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1897 } 1898 1899 if (computesInternalInsets) { 1900 // Clear the original insets. 1901 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 1902 insets.reset(); 1903 1904 // Compute new insets in place. 1905 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1906 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1907 1908 // Tell the window manager. 1909 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1910 mLastGivenInsets.set(insets); 1911 1912 // Translate insets to screen coordinates if needed. 1913 final Rect contentInsets; 1914 final Rect visibleInsets; 1915 final Region touchableRegion; 1916 if (mTranslator != null) { 1917 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1918 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1919 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1920 } else { 1921 contentInsets = insets.contentInsets; 1922 visibleInsets = insets.visibleInsets; 1923 touchableRegion = insets.touchableRegion; 1924 } 1925 1926 try { 1927 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1928 contentInsets, visibleInsets, touchableRegion); 1929 } catch (RemoteException e) { 1930 } 1931 } 1932 } 1933 1934 boolean skipDraw = false; 1935 1936 if (mFirst) { 1937 // handle first focus request 1938 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1939 + mView.hasFocus()); 1940 if (mView != null) { 1941 if (!mView.hasFocus()) { 1942 mView.requestFocus(View.FOCUS_FORWARD); 1943 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1944 + mView.findFocus()); 1945 } else { 1946 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1947 + mView.findFocus()); 1948 } 1949 } 1950 } else if (mWindowsAnimating) { 1951 if (mRemainingFrameCount <= 0) { 1952 skipDraw = true; 1953 } 1954 mRemainingFrameCount--; 1955 } 1956 1957 mFirst = false; 1958 mWillDrawSoon = false; 1959 mNewSurfaceNeeded = false; 1960 mViewVisibility = viewVisibility; 1961 1962 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1963 final boolean imTarget = WindowManager.LayoutParams 1964 .mayUseInputMethod(mWindowAttributes.flags); 1965 if (imTarget != mLastWasImTarget) { 1966 mLastWasImTarget = imTarget; 1967 InputMethodManager imm = InputMethodManager.peekInstance(); 1968 if (imm != null && imTarget) { 1969 imm.onPreWindowFocus(mView, true /* hasWindowFocus */); 1970 imm.onPostWindowFocus(mView, mView.findFocus(), 1971 mWindowAttributes.softInputMode, 1972 !mHasHadWindowFocus, mWindowAttributes.flags); 1973 } 1974 } 1975 } 1976 1977 // Remember if we must report the next draw. 1978 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1979 mReportNextDraw = true; 1980 } 1981 1982 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || 1983 viewVisibility != View.VISIBLE; 1984 1985 if (!cancelDraw && !newSurface) { 1986 if (!skipDraw || mReportNextDraw) { 1987 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1988 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1989 mPendingTransitions.get(i).startChangingAnimations(); 1990 } 1991 mPendingTransitions.clear(); 1992 } 1993 1994 performDraw(); 1995 } 1996 } else { 1997 if (viewVisibility == View.VISIBLE) { 1998 // Try again 1999 scheduleTraversals(); 2000 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2001 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2002 mPendingTransitions.get(i).endChangingAnimations(); 2003 } 2004 mPendingTransitions.clear(); 2005 } 2006 } 2007 2008 mIsInTraversal = false; 2009 } 2010 2011 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2012 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 2013 try { 2014 if (!mWindowSession.outOfMemory(mWindow) && 2015 Process.myUid() != Process.SYSTEM_UID) { 2016 Slog.w(TAG, "No processes killed for memory; killing self"); 2017 Process.killProcess(Process.myPid()); 2018 } 2019 } catch (RemoteException ex) { 2020 } 2021 mLayoutRequested = true; // ask wm for a new surface next time. 2022 } 2023 2024 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2025 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2026 try { 2027 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2028 } finally { 2029 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2030 } 2031 } 2032 2033 /** 2034 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2035 * is currently undergoing a layout pass. 2036 * 2037 * @return whether the view hierarchy is currently undergoing a layout pass 2038 */ 2039 boolean isInLayout() { 2040 return mInLayout; 2041 } 2042 2043 /** 2044 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2045 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2046 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2047 * all children in that container hierarchy are measured and laid out at the end of the layout 2048 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2049 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2050 * we check all of those views to see if any still have pending layout requests, which 2051 * indicates that they were not correctly handled by their container hierarchy. If that is 2052 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2053 * to blank containers, and force a second request/measure/layout pass in this frame. If 2054 * more requestLayout() calls are received during that second layout pass, we post those 2055 * requests to the next frame to avoid possible infinite loops. 2056 * 2057 * <p>The return value from this method indicates whether the request should proceed 2058 * (if it is a request during the first layout pass) or should be skipped and posted to the 2059 * next frame (if it is a request during the second layout pass).</p> 2060 * 2061 * @param view the view that requested the layout. 2062 * 2063 * @return true if request should proceed, false otherwise. 2064 */ 2065 boolean requestLayoutDuringLayout(final View view) { 2066 if (view.mParent == null || view.mAttachInfo == null) { 2067 // Would not normally trigger another layout, so just let it pass through as usual 2068 return true; 2069 } 2070 if (!mLayoutRequesters.contains(view)) { 2071 mLayoutRequesters.add(view); 2072 } 2073 if (!mHandlingLayoutInLayoutRequest) { 2074 // Let the request proceed normally; it will be processed in a second layout pass 2075 // if necessary 2076 return true; 2077 } else { 2078 // Don't let the request proceed during the second layout pass. 2079 // It will post to the next frame instead. 2080 return false; 2081 } 2082 } 2083 2084 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2085 int desiredWindowHeight) { 2086 mLayoutRequested = false; 2087 mScrollMayChange = true; 2088 mInLayout = true; 2089 2090 final View host = mView; 2091 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2092 Log.v(TAG, "Laying out " + host + " to (" + 2093 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2094 } 2095 2096 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2097 try { 2098 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2099 2100 mInLayout = false; 2101 int numViewsRequestingLayout = mLayoutRequesters.size(); 2102 if (numViewsRequestingLayout > 0) { 2103 // requestLayout() was called during layout. 2104 // If no layout-request flags are set on the requesting views, there is no problem. 2105 // If some requests are still pending, then we need to clear those flags and do 2106 // a full request/measure/layout pass to handle this situation. 2107 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2108 false); 2109 if (validLayoutRequesters != null) { 2110 // Set this flag to indicate that any further requests are happening during 2111 // the second pass, which may result in posting those requests to the next 2112 // frame instead 2113 mHandlingLayoutInLayoutRequest = true; 2114 2115 // Process fresh layout requests, then measure and layout 2116 int numValidRequests = validLayoutRequesters.size(); 2117 for (int i = 0; i < numValidRequests; ++i) { 2118 final View view = validLayoutRequesters.get(i); 2119 Log.w("View", "requestLayout() improperly called by " + view + 2120 " during layout: running second layout pass"); 2121 view.requestLayout(); 2122 } 2123 measureHierarchy(host, lp, mView.getContext().getResources(), 2124 desiredWindowWidth, desiredWindowHeight); 2125 mInLayout = true; 2126 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2127 2128 mHandlingLayoutInLayoutRequest = false; 2129 2130 // Check the valid requests again, this time without checking/clearing the 2131 // layout flags, since requests happening during the second pass get noop'd 2132 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2133 if (validLayoutRequesters != null) { 2134 final ArrayList<View> finalRequesters = validLayoutRequesters; 2135 // Post second-pass requests to the next frame 2136 getRunQueue().post(new Runnable() { 2137 @Override 2138 public void run() { 2139 int numValidRequests = finalRequesters.size(); 2140 for (int i = 0; i < numValidRequests; ++i) { 2141 final View view = finalRequesters.get(i); 2142 Log.w("View", "requestLayout() improperly called by " + view + 2143 " during second layout pass: posting in next frame"); 2144 view.requestLayout(); 2145 } 2146 } 2147 }); 2148 } 2149 } 2150 2151 } 2152 } finally { 2153 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2154 } 2155 mInLayout = false; 2156 } 2157 2158 /** 2159 * This method is called during layout when there have been calls to requestLayout() during 2160 * layout. It walks through the list of views that requested layout to determine which ones 2161 * still need it, based on visibility in the hierarchy and whether they have already been 2162 * handled (as is usually the case with ListView children). 2163 * 2164 * @param layoutRequesters The list of views that requested layout during layout 2165 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2166 * If so, the FORCE_LAYOUT flag was not set on requesters. 2167 * @return A list of the actual views that still need to be laid out. 2168 */ 2169 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2170 boolean secondLayoutRequests) { 2171 2172 int numViewsRequestingLayout = layoutRequesters.size(); 2173 ArrayList<View> validLayoutRequesters = null; 2174 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2175 View view = layoutRequesters.get(i); 2176 if (view != null && view.mAttachInfo != null && view.mParent != null && 2177 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2178 View.PFLAG_FORCE_LAYOUT)) { 2179 boolean gone = false; 2180 View parent = view; 2181 // Only trigger new requests for views in a non-GONE hierarchy 2182 while (parent != null) { 2183 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2184 gone = true; 2185 break; 2186 } 2187 if (parent.mParent instanceof View) { 2188 parent = (View) parent.mParent; 2189 } else { 2190 parent = null; 2191 } 2192 } 2193 if (!gone) { 2194 if (validLayoutRequesters == null) { 2195 validLayoutRequesters = new ArrayList<View>(); 2196 } 2197 validLayoutRequesters.add(view); 2198 } 2199 } 2200 } 2201 if (!secondLayoutRequests) { 2202 // If we're checking the layout flags, then we need to clean them up also 2203 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2204 View view = layoutRequesters.get(i); 2205 while (view != null && 2206 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2207 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2208 if (view.mParent instanceof View) { 2209 view = (View) view.mParent; 2210 } else { 2211 view = null; 2212 } 2213 } 2214 } 2215 } 2216 layoutRequesters.clear(); 2217 return validLayoutRequesters; 2218 } 2219 2220 @Override 2221 public void requestTransparentRegion(View child) { 2222 // the test below should not fail unless someone is messing with us 2223 checkThread(); 2224 if (mView == child) { 2225 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2226 // Need to make sure we re-evaluate the window attributes next 2227 // time around, to ensure the window has the correct format. 2228 mWindowAttributesChanged = true; 2229 mWindowAttributesChangesFlag = 0; 2230 requestLayout(); 2231 } 2232 } 2233 2234 /** 2235 * Figures out the measure spec for the root view in a window based on it's 2236 * layout params. 2237 * 2238 * @param windowSize 2239 * The available width or height of the window 2240 * 2241 * @param rootDimension 2242 * The layout params for one dimension (width or height) of the 2243 * window. 2244 * 2245 * @return The measure spec to use to measure the root view. 2246 */ 2247 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2248 int measureSpec; 2249 switch (rootDimension) { 2250 2251 case ViewGroup.LayoutParams.MATCH_PARENT: 2252 // Window can't resize. Force root view to be windowSize. 2253 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2254 break; 2255 case ViewGroup.LayoutParams.WRAP_CONTENT: 2256 // Window can resize. Set max size for root view. 2257 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2258 break; 2259 default: 2260 // Window wants to be an exact size. Force root view to be that size. 2261 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2262 break; 2263 } 2264 return measureSpec; 2265 } 2266 2267 int mHardwareXOffset; 2268 int mHardwareYOffset; 2269 2270 @Override 2271 public void onHardwarePreDraw(DisplayListCanvas canvas) { 2272 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2273 } 2274 2275 @Override 2276 public void onHardwarePostDraw(DisplayListCanvas canvas) { 2277 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2278 } 2279 2280 /** 2281 * @hide 2282 */ 2283 void outputDisplayList(View view) { 2284 view.mRenderNode.output(); 2285 } 2286 2287 /** 2288 * @see #PROPERTY_PROFILE_RENDERING 2289 */ 2290 private void profileRendering(boolean enabled) { 2291 if (mProfileRendering) { 2292 mRenderProfilingEnabled = enabled; 2293 2294 if (mRenderProfiler != null) { 2295 mChoreographer.removeFrameCallback(mRenderProfiler); 2296 } 2297 if (mRenderProfilingEnabled) { 2298 if (mRenderProfiler == null) { 2299 mRenderProfiler = new Choreographer.FrameCallback() { 2300 @Override 2301 public void doFrame(long frameTimeNanos) { 2302 mDirty.set(0, 0, mWidth, mHeight); 2303 scheduleTraversals(); 2304 if (mRenderProfilingEnabled) { 2305 mChoreographer.postFrameCallback(mRenderProfiler); 2306 } 2307 } 2308 }; 2309 } 2310 mChoreographer.postFrameCallback(mRenderProfiler); 2311 } else { 2312 mRenderProfiler = null; 2313 } 2314 } 2315 } 2316 2317 /** 2318 * Called from draw() when DEBUG_FPS is enabled 2319 */ 2320 private void trackFPS() { 2321 // Tracks frames per second drawn. First value in a series of draws may be bogus 2322 // because it down not account for the intervening idle time 2323 long nowTime = System.currentTimeMillis(); 2324 if (mFpsStartTime < 0) { 2325 mFpsStartTime = mFpsPrevTime = nowTime; 2326 mFpsNumFrames = 0; 2327 } else { 2328 ++mFpsNumFrames; 2329 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2330 long frameTime = nowTime - mFpsPrevTime; 2331 long totalTime = nowTime - mFpsStartTime; 2332 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2333 mFpsPrevTime = nowTime; 2334 if (totalTime > 1000) { 2335 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2336 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2337 mFpsStartTime = nowTime; 2338 mFpsNumFrames = 0; 2339 } 2340 } 2341 } 2342 2343 private void performDraw() { 2344 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2345 return; 2346 } 2347 2348 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2349 mFullRedrawNeeded = false; 2350 2351 mIsDrawing = true; 2352 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2353 try { 2354 draw(fullRedrawNeeded); 2355 } finally { 2356 mIsDrawing = false; 2357 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2358 } 2359 2360 // For whatever reason we didn't create a HardwareRenderer, end any 2361 // hardware animations that are now dangling 2362 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2363 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2364 for (int i = 0; i < count; i++) { 2365 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2366 } 2367 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2368 } 2369 2370 if (mReportNextDraw) { 2371 mReportNextDraw = false; 2372 if (mAttachInfo.mHardwareRenderer != null) { 2373 mAttachInfo.mHardwareRenderer.fence(); 2374 } 2375 2376 if (LOCAL_LOGV) { 2377 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2378 } 2379 if (mSurfaceHolder != null && mSurface.isValid()) { 2380 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2381 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2382 if (callbacks != null) { 2383 for (SurfaceHolder.Callback c : callbacks) { 2384 if (c instanceof SurfaceHolder.Callback2) { 2385 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2386 mSurfaceHolder); 2387 } 2388 } 2389 } 2390 } 2391 try { 2392 mWindowSession.finishDrawing(mWindow); 2393 } catch (RemoteException e) { 2394 } 2395 } 2396 } 2397 2398 private void draw(boolean fullRedrawNeeded) { 2399 Surface surface = mSurface; 2400 if (!surface.isValid()) { 2401 return; 2402 } 2403 2404 if (DEBUG_FPS) { 2405 trackFPS(); 2406 } 2407 2408 if (!sFirstDrawComplete) { 2409 synchronized (sFirstDrawHandlers) { 2410 sFirstDrawComplete = true; 2411 final int count = sFirstDrawHandlers.size(); 2412 for (int i = 0; i< count; i++) { 2413 mHandler.post(sFirstDrawHandlers.get(i)); 2414 } 2415 } 2416 } 2417 2418 scrollToRectOrFocus(null, false); 2419 2420 if (mAttachInfo.mViewScrollChanged) { 2421 mAttachInfo.mViewScrollChanged = false; 2422 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2423 } 2424 2425 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2426 final int curScrollY; 2427 if (animating) { 2428 curScrollY = mScroller.getCurrY(); 2429 } else { 2430 curScrollY = mScrollY; 2431 } 2432 if (mCurScrollY != curScrollY) { 2433 mCurScrollY = curScrollY; 2434 fullRedrawNeeded = true; 2435 if (mView instanceof RootViewSurfaceTaker) { 2436 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2437 } 2438 } 2439 2440 final float appScale = mAttachInfo.mApplicationScale; 2441 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2442 2443 int resizeAlpha = 0; 2444 2445 final Rect dirty = mDirty; 2446 if (mSurfaceHolder != null) { 2447 // The app owns the surface, we won't draw. 2448 dirty.setEmpty(); 2449 if (animating && mScroller != null) { 2450 mScroller.abortAnimation(); 2451 } 2452 return; 2453 } 2454 2455 if (fullRedrawNeeded) { 2456 mAttachInfo.mIgnoreDirtyState = true; 2457 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2458 } 2459 2460 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2461 Log.v(TAG, "Draw " + mView + "/" 2462 + mWindowAttributes.getTitle() 2463 + ": dirty={" + dirty.left + "," + dirty.top 2464 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2465 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2466 appScale + ", width=" + mWidth + ", height=" + mHeight); 2467 } 2468 2469 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2470 2471 int xOffset = 0; 2472 int yOffset = curScrollY; 2473 final WindowManager.LayoutParams params = mWindowAttributes; 2474 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2475 if (surfaceInsets != null) { 2476 xOffset -= surfaceInsets.left; 2477 yOffset -= surfaceInsets.top; 2478 2479 // Offset dirty rect for surface insets. 2480 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2481 } 2482 2483 boolean accessibilityFocusDirty = false; 2484 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2485 if (drawable != null) { 2486 final Rect bounds = mAttachInfo.mTmpInvalRect; 2487 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2488 if (!hasFocus) { 2489 bounds.setEmpty(); 2490 } 2491 if (!bounds.equals(drawable.getBounds())) { 2492 accessibilityFocusDirty = true; 2493 } 2494 } 2495 2496 mAttachInfo.mDrawingTime = 2497 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2498 2499 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2500 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2501 // If accessibility focus moved, always invalidate the root. 2502 boolean invalidateRoot = accessibilityFocusDirty; 2503 2504 // Draw with hardware renderer. 2505 mIsAnimating = false; 2506 2507 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2508 mHardwareYOffset = yOffset; 2509 mHardwareXOffset = xOffset; 2510 invalidateRoot = true; 2511 } 2512 2513 if (invalidateRoot) { 2514 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2515 } 2516 2517 dirty.setEmpty(); 2518 2519 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2520 } else { 2521 // If we get here with a disabled & requested hardware renderer, something went 2522 // wrong (an invalidate posted right before we destroyed the hardware surface 2523 // for instance) so we should just bail out. Locking the surface with software 2524 // rendering at this point would lock it forever and prevent hardware renderer 2525 // from doing its job when it comes back. 2526 // Before we request a new frame we must however attempt to reinitiliaze the 2527 // hardware renderer if it's in requested state. This would happen after an 2528 // eglTerminate() for instance. 2529 if (mAttachInfo.mHardwareRenderer != null && 2530 !mAttachInfo.mHardwareRenderer.isEnabled() && 2531 mAttachInfo.mHardwareRenderer.isRequested()) { 2532 2533 try { 2534 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2535 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 2536 } catch (OutOfResourcesException e) { 2537 handleOutOfResourcesException(e); 2538 return; 2539 } 2540 2541 mFullRedrawNeeded = true; 2542 scheduleTraversals(); 2543 return; 2544 } 2545 2546 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2547 return; 2548 } 2549 } 2550 } 2551 2552 if (animating) { 2553 mFullRedrawNeeded = true; 2554 scheduleTraversals(); 2555 } 2556 } 2557 2558 /** 2559 * @return true if drawing was successful, false if an error occurred 2560 */ 2561 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2562 boolean scalingRequired, Rect dirty) { 2563 2564 // Draw with software renderer. 2565 final Canvas canvas; 2566 try { 2567 final int left = dirty.left; 2568 final int top = dirty.top; 2569 final int right = dirty.right; 2570 final int bottom = dirty.bottom; 2571 2572 canvas = mSurface.lockCanvas(dirty); 2573 2574 // The dirty rectangle can be modified by Surface.lockCanvas() 2575 //noinspection ConstantConditions 2576 if (left != dirty.left || top != dirty.top || right != dirty.right 2577 || bottom != dirty.bottom) { 2578 attachInfo.mIgnoreDirtyState = true; 2579 } 2580 2581 // TODO: Do this in native 2582 canvas.setDensity(mDensity); 2583 } catch (Surface.OutOfResourcesException e) { 2584 handleOutOfResourcesException(e); 2585 return false; 2586 } catch (IllegalArgumentException e) { 2587 Log.e(TAG, "Could not lock surface", e); 2588 // Don't assume this is due to out of memory, it could be 2589 // something else, and if it is something else then we could 2590 // kill stuff (or ourself) for no reason. 2591 mLayoutRequested = true; // ask wm for a new surface next time. 2592 return false; 2593 } 2594 2595 try { 2596 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2597 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2598 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2599 //canvas.drawARGB(255, 255, 0, 0); 2600 } 2601 2602 // If this bitmap's format includes an alpha channel, we 2603 // need to clear it before drawing so that the child will 2604 // properly re-composite its drawing on a transparent 2605 // background. This automatically respects the clip/dirty region 2606 // or 2607 // If we are applying an offset, we need to clear the area 2608 // where the offset doesn't appear to avoid having garbage 2609 // left in the blank areas. 2610 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2611 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2612 } 2613 2614 dirty.setEmpty(); 2615 mIsAnimating = false; 2616 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2617 2618 if (DEBUG_DRAW) { 2619 Context cxt = mView.getContext(); 2620 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2621 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2622 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2623 } 2624 try { 2625 canvas.translate(-xoff, -yoff); 2626 if (mTranslator != null) { 2627 mTranslator.translateCanvas(canvas); 2628 } 2629 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2630 attachInfo.mSetIgnoreDirtyState = false; 2631 2632 mView.draw(canvas); 2633 2634 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2635 } finally { 2636 if (!attachInfo.mSetIgnoreDirtyState) { 2637 // Only clear the flag if it was not set during the mView.draw() call 2638 attachInfo.mIgnoreDirtyState = false; 2639 } 2640 } 2641 } finally { 2642 try { 2643 surface.unlockCanvasAndPost(canvas); 2644 } catch (IllegalArgumentException e) { 2645 Log.e(TAG, "Could not unlock surface", e); 2646 mLayoutRequested = true; // ask wm for a new surface next time. 2647 //noinspection ReturnInsideFinallyBlock 2648 return false; 2649 } 2650 2651 if (LOCAL_LOGV) { 2652 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2653 } 2654 } 2655 return true; 2656 } 2657 2658 /** 2659 * We want to draw a highlight around the current accessibility focused. 2660 * Since adding a style for all possible view is not a viable option we 2661 * have this specialized drawing method. 2662 * 2663 * Note: We are doing this here to be able to draw the highlight for 2664 * virtual views in addition to real ones. 2665 * 2666 * @param canvas The canvas on which to draw. 2667 */ 2668 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2669 final Rect bounds = mAttachInfo.mTmpInvalRect; 2670 if (getAccessibilityFocusedRect(bounds)) { 2671 final Drawable drawable = getAccessibilityFocusedDrawable(); 2672 if (drawable != null) { 2673 drawable.setBounds(bounds); 2674 drawable.draw(canvas); 2675 } 2676 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2677 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2678 } 2679 } 2680 2681 private boolean getAccessibilityFocusedRect(Rect bounds) { 2682 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2683 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2684 return false; 2685 } 2686 2687 final View host = mAccessibilityFocusedHost; 2688 if (host == null || host.mAttachInfo == null) { 2689 return false; 2690 } 2691 2692 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2693 if (provider == null) { 2694 host.getBoundsOnScreen(bounds, true); 2695 } else if (mAccessibilityFocusedVirtualView != null) { 2696 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2697 } else { 2698 return false; 2699 } 2700 2701 // Transform the rect into window-relative coordinates. 2702 final AttachInfo attachInfo = mAttachInfo; 2703 bounds.offset(0, attachInfo.mViewRootImpl.mScrollY); 2704 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2705 if (!bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, 2706 attachInfo.mViewRootImpl.mHeight)) { 2707 // If no intersection, set bounds to empty. 2708 bounds.setEmpty(); 2709 } 2710 return !bounds.isEmpty(); 2711 } 2712 2713 private Drawable getAccessibilityFocusedDrawable() { 2714 // Lazily load the accessibility focus drawable. 2715 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2716 final TypedValue value = new TypedValue(); 2717 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2718 R.attr.accessibilityFocusedDrawable, value, true); 2719 if (resolved) { 2720 mAttachInfo.mAccessibilityFocusDrawable = 2721 mView.mContext.getDrawable(value.resourceId); 2722 } 2723 } 2724 return mAttachInfo.mAccessibilityFocusDrawable; 2725 } 2726 2727 /** 2728 * @hide 2729 */ 2730 public void setDrawDuringWindowsAnimating(boolean value) { 2731 mDrawDuringWindowsAnimating = value; 2732 if (value) { 2733 handleDispatchWindowAnimationStopped(); 2734 } 2735 } 2736 2737 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2738 final Rect ci = mAttachInfo.mContentInsets; 2739 final Rect vi = mAttachInfo.mVisibleInsets; 2740 int scrollY = 0; 2741 boolean handled = false; 2742 2743 if (vi.left > ci.left || vi.top > ci.top 2744 || vi.right > ci.right || vi.bottom > ci.bottom) { 2745 // We'll assume that we aren't going to change the scroll 2746 // offset, since we want to avoid that unless it is actually 2747 // going to make the focus visible... otherwise we scroll 2748 // all over the place. 2749 scrollY = mScrollY; 2750 // We can be called for two different situations: during a draw, 2751 // to update the scroll position if the focus has changed (in which 2752 // case 'rectangle' is null), or in response to a 2753 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2754 // is non-null and we just want to scroll to whatever that 2755 // rectangle is). 2756 final View focus = mView.findFocus(); 2757 if (focus == null) { 2758 return false; 2759 } 2760 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2761 if (focus != lastScrolledFocus) { 2762 // If the focus has changed, then ignore any requests to scroll 2763 // to a rectangle; first we want to make sure the entire focus 2764 // view is visible. 2765 rectangle = null; 2766 } 2767 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2768 + " rectangle=" + rectangle + " ci=" + ci 2769 + " vi=" + vi); 2770 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2771 // Optimization: if the focus hasn't changed since last 2772 // time, and no layout has happened, then just leave things 2773 // as they are. 2774 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2775 + mScrollY + " vi=" + vi.toShortString()); 2776 } else { 2777 // We need to determine if the currently focused view is 2778 // within the visible part of the window and, if not, apply 2779 // a pan so it can be seen. 2780 mLastScrolledFocus = new WeakReference<View>(focus); 2781 mScrollMayChange = false; 2782 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2783 // Try to find the rectangle from the focus view. 2784 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2785 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2786 + mView.getWidth() + " h=" + mView.getHeight() 2787 + " ci=" + ci.toShortString() 2788 + " vi=" + vi.toShortString()); 2789 if (rectangle == null) { 2790 focus.getFocusedRect(mTempRect); 2791 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2792 + ": focusRect=" + mTempRect.toShortString()); 2793 if (mView instanceof ViewGroup) { 2794 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2795 focus, mTempRect); 2796 } 2797 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2798 "Focus in window: focusRect=" 2799 + mTempRect.toShortString() 2800 + " visRect=" + mVisRect.toShortString()); 2801 } else { 2802 mTempRect.set(rectangle); 2803 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2804 "Request scroll to rect: " 2805 + mTempRect.toShortString() 2806 + " visRect=" + mVisRect.toShortString()); 2807 } 2808 if (mTempRect.intersect(mVisRect)) { 2809 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2810 "Focus window visible rect: " 2811 + mTempRect.toShortString()); 2812 if (mTempRect.height() > 2813 (mView.getHeight()-vi.top-vi.bottom)) { 2814 // If the focus simply is not going to fit, then 2815 // best is probably just to leave things as-is. 2816 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2817 "Too tall; leaving scrollY=" + scrollY); 2818 } else if ((mTempRect.top-scrollY) < vi.top) { 2819 scrollY -= vi.top - (mTempRect.top-scrollY); 2820 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2821 "Top covered; scrollY=" + scrollY); 2822 } else if ((mTempRect.bottom-scrollY) 2823 > (mView.getHeight()-vi.bottom)) { 2824 scrollY += (mTempRect.bottom-scrollY) 2825 - (mView.getHeight()-vi.bottom); 2826 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2827 "Bottom covered; scrollY=" + scrollY); 2828 } 2829 handled = true; 2830 } 2831 } 2832 } 2833 } 2834 2835 if (scrollY != mScrollY) { 2836 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2837 + mScrollY + " , new=" + scrollY); 2838 if (!immediate) { 2839 if (mScroller == null) { 2840 mScroller = new Scroller(mView.getContext()); 2841 } 2842 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2843 } else if (mScroller != null) { 2844 mScroller.abortAnimation(); 2845 } 2846 mScrollY = scrollY; 2847 } 2848 2849 return handled; 2850 } 2851 2852 /** 2853 * @hide 2854 */ 2855 public View getAccessibilityFocusedHost() { 2856 return mAccessibilityFocusedHost; 2857 } 2858 2859 /** 2860 * @hide 2861 */ 2862 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2863 return mAccessibilityFocusedVirtualView; 2864 } 2865 2866 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2867 // If we have a virtual view with accessibility focus we need 2868 // to clear the focus and invalidate the virtual view bounds. 2869 if (mAccessibilityFocusedVirtualView != null) { 2870 2871 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2872 View focusHost = mAccessibilityFocusedHost; 2873 2874 // Wipe the state of the current accessibility focus since 2875 // the call into the provider to clear accessibility focus 2876 // will fire an accessibility event which will end up calling 2877 // this method and we want to have clean state when this 2878 // invocation happens. 2879 mAccessibilityFocusedHost = null; 2880 mAccessibilityFocusedVirtualView = null; 2881 2882 // Clear accessibility focus on the host after clearing state since 2883 // this method may be reentrant. 2884 focusHost.clearAccessibilityFocusNoCallbacks(); 2885 2886 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2887 if (provider != null) { 2888 // Invalidate the area of the cleared accessibility focus. 2889 focusNode.getBoundsInParent(mTempRect); 2890 focusHost.invalidate(mTempRect); 2891 // Clear accessibility focus in the virtual node. 2892 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2893 focusNode.getSourceNodeId()); 2894 provider.performAction(virtualNodeId, 2895 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2896 } 2897 focusNode.recycle(); 2898 } 2899 if (mAccessibilityFocusedHost != null) { 2900 // Clear accessibility focus in the view. 2901 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2902 } 2903 2904 // Set the new focus host and node. 2905 mAccessibilityFocusedHost = view; 2906 mAccessibilityFocusedVirtualView = node; 2907 2908 if (mAttachInfo.mHardwareRenderer != null) { 2909 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2910 } 2911 } 2912 2913 @Override 2914 public void requestChildFocus(View child, View focused) { 2915 if (DEBUG_INPUT_RESIZE) { 2916 Log.v(TAG, "Request child focus: focus now " + focused); 2917 } 2918 checkThread(); 2919 scheduleTraversals(); 2920 } 2921 2922 @Override 2923 public void clearChildFocus(View child) { 2924 if (DEBUG_INPUT_RESIZE) { 2925 Log.v(TAG, "Clearing child focus"); 2926 } 2927 checkThread(); 2928 scheduleTraversals(); 2929 } 2930 2931 @Override 2932 public ViewParent getParentForAccessibility() { 2933 return null; 2934 } 2935 2936 @Override 2937 public void focusableViewAvailable(View v) { 2938 checkThread(); 2939 if (mView != null) { 2940 if (!mView.hasFocus()) { 2941 v.requestFocus(); 2942 } else { 2943 // the one case where will transfer focus away from the current one 2944 // is if the current view is a view group that prefers to give focus 2945 // to its children first AND the view is a descendant of it. 2946 View focused = mView.findFocus(); 2947 if (focused instanceof ViewGroup) { 2948 ViewGroup group = (ViewGroup) focused; 2949 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2950 && isViewDescendantOf(v, focused)) { 2951 v.requestFocus(); 2952 } 2953 } 2954 } 2955 } 2956 } 2957 2958 @Override 2959 public void recomputeViewAttributes(View child) { 2960 checkThread(); 2961 if (mView == child) { 2962 mAttachInfo.mRecomputeGlobalAttributes = true; 2963 if (!mWillDrawSoon) { 2964 scheduleTraversals(); 2965 } 2966 } 2967 } 2968 2969 void dispatchDetachedFromWindow() { 2970 if (mView != null && mView.mAttachInfo != null) { 2971 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2972 mView.dispatchDetachedFromWindow(); 2973 } 2974 2975 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2976 mAccessibilityManager.removeAccessibilityStateChangeListener( 2977 mAccessibilityInteractionConnectionManager); 2978 mAccessibilityManager.removeHighTextContrastStateChangeListener( 2979 mHighContrastTextManager); 2980 removeSendWindowContentChangedCallback(); 2981 2982 destroyHardwareRenderer(); 2983 2984 setAccessibilityFocus(null, null); 2985 2986 mView.assignParent(null); 2987 mView = null; 2988 mAttachInfo.mRootView = null; 2989 2990 mSurface.release(); 2991 2992 if (mInputQueueCallback != null && mInputQueue != null) { 2993 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2994 mInputQueue.dispose(); 2995 mInputQueueCallback = null; 2996 mInputQueue = null; 2997 } 2998 if (mInputEventReceiver != null) { 2999 mInputEventReceiver.dispose(); 3000 mInputEventReceiver = null; 3001 } 3002 try { 3003 mWindowSession.remove(mWindow); 3004 } catch (RemoteException e) { 3005 } 3006 3007 // Dispose the input channel after removing the window so the Window Manager 3008 // doesn't interpret the input channel being closed as an abnormal termination. 3009 if (mInputChannel != null) { 3010 mInputChannel.dispose(); 3011 mInputChannel = null; 3012 } 3013 3014 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3015 3016 unscheduleTraversals(); 3017 } 3018 3019 void updateConfiguration(Configuration config, boolean force) { 3020 if (DEBUG_CONFIGURATION) Log.v(TAG, 3021 "Applying new config to window " 3022 + mWindowAttributes.getTitle() 3023 + ": " + config); 3024 3025 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3026 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3027 config = new Configuration(config); 3028 ci.applyToConfiguration(mNoncompatDensity, config); 3029 } 3030 3031 synchronized (sConfigCallbacks) { 3032 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3033 sConfigCallbacks.get(i).onConfigurationChanged(config); 3034 } 3035 } 3036 if (mView != null) { 3037 // At this point the resources have been updated to 3038 // have the most recent config, whatever that is. Use 3039 // the one in them which may be newer. 3040 config = mView.getResources().getConfiguration(); 3041 if (force || mLastConfiguration.diff(config) != 0) { 3042 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3043 final int currentLayoutDirection = config.getLayoutDirection(); 3044 mLastConfiguration.setTo(config); 3045 if (lastLayoutDirection != currentLayoutDirection && 3046 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3047 mView.setLayoutDirection(currentLayoutDirection); 3048 } 3049 mView.dispatchConfigurationChanged(config); 3050 } 3051 } 3052 } 3053 3054 /** 3055 * Return true if child is an ancestor of parent, (or equal to the parent). 3056 */ 3057 public static boolean isViewDescendantOf(View child, View parent) { 3058 if (child == parent) { 3059 return true; 3060 } 3061 3062 final ViewParent theParent = child.getParent(); 3063 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3064 } 3065 3066 private final static int MSG_INVALIDATE = 1; 3067 private final static int MSG_INVALIDATE_RECT = 2; 3068 private final static int MSG_DIE = 3; 3069 private final static int MSG_RESIZED = 4; 3070 private final static int MSG_RESIZED_REPORT = 5; 3071 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3072 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3073 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3074 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3075 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3076 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 3077 private final static int MSG_CHECK_FOCUS = 13; 3078 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3079 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3080 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3081 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3082 private final static int MSG_UPDATE_CONFIGURATION = 18; 3083 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3084 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3085 private final static int MSG_INVALIDATE_WORLD = 22; 3086 private final static int MSG_WINDOW_MOVED = 23; 3087 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 24; 3088 private final static int MSG_DISPATCH_WINDOW_SHOWN = 25; 3089 private final static int MSG_DISPATCH_WINDOW_ANIMATION_STOPPED = 26; 3090 private final static int MSG_DISPATCH_WINDOW_ANIMATION_STARTED = 27; 3091 3092 final class ViewRootHandler extends Handler { 3093 @Override 3094 public String getMessageName(Message message) { 3095 switch (message.what) { 3096 case MSG_INVALIDATE: 3097 return "MSG_INVALIDATE"; 3098 case MSG_INVALIDATE_RECT: 3099 return "MSG_INVALIDATE_RECT"; 3100 case MSG_DIE: 3101 return "MSG_DIE"; 3102 case MSG_RESIZED: 3103 return "MSG_RESIZED"; 3104 case MSG_RESIZED_REPORT: 3105 return "MSG_RESIZED_REPORT"; 3106 case MSG_WINDOW_FOCUS_CHANGED: 3107 return "MSG_WINDOW_FOCUS_CHANGED"; 3108 case MSG_DISPATCH_INPUT_EVENT: 3109 return "MSG_DISPATCH_INPUT_EVENT"; 3110 case MSG_DISPATCH_APP_VISIBILITY: 3111 return "MSG_DISPATCH_APP_VISIBILITY"; 3112 case MSG_DISPATCH_GET_NEW_SURFACE: 3113 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3114 case MSG_DISPATCH_KEY_FROM_IME: 3115 return "MSG_DISPATCH_KEY_FROM_IME"; 3116 case MSG_FINISH_INPUT_CONNECTION: 3117 return "MSG_FINISH_INPUT_CONNECTION"; 3118 case MSG_CHECK_FOCUS: 3119 return "MSG_CHECK_FOCUS"; 3120 case MSG_CLOSE_SYSTEM_DIALOGS: 3121 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3122 case MSG_DISPATCH_DRAG_EVENT: 3123 return "MSG_DISPATCH_DRAG_EVENT"; 3124 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3125 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3126 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3127 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3128 case MSG_UPDATE_CONFIGURATION: 3129 return "MSG_UPDATE_CONFIGURATION"; 3130 case MSG_PROCESS_INPUT_EVENTS: 3131 return "MSG_PROCESS_INPUT_EVENTS"; 3132 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3133 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3134 case MSG_DISPATCH_WINDOW_ANIMATION_STARTED: 3135 return "MSG_DISPATCH_WINDOW_ANIMATION_STARTED"; 3136 case MSG_DISPATCH_WINDOW_ANIMATION_STOPPED: 3137 return "MSG_DISPATCH_WINDOW_ANIMATION_STOPPED"; 3138 case MSG_WINDOW_MOVED: 3139 return "MSG_WINDOW_MOVED"; 3140 case MSG_SYNTHESIZE_INPUT_EVENT: 3141 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3142 case MSG_DISPATCH_WINDOW_SHOWN: 3143 return "MSG_DISPATCH_WINDOW_SHOWN"; 3144 } 3145 return super.getMessageName(message); 3146 } 3147 3148 @Override 3149 public void handleMessage(Message msg) { 3150 switch (msg.what) { 3151 case MSG_INVALIDATE: 3152 ((View) msg.obj).invalidate(); 3153 break; 3154 case MSG_INVALIDATE_RECT: 3155 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3156 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3157 info.recycle(); 3158 break; 3159 case MSG_PROCESS_INPUT_EVENTS: 3160 mProcessInputEventsScheduled = false; 3161 doProcessInputEvents(); 3162 break; 3163 case MSG_DISPATCH_APP_VISIBILITY: 3164 handleAppVisibility(msg.arg1 != 0); 3165 break; 3166 case MSG_DISPATCH_GET_NEW_SURFACE: 3167 handleGetNewSurface(); 3168 break; 3169 case MSG_RESIZED: { 3170 // Recycled in the fall through... 3171 SomeArgs args = (SomeArgs) msg.obj; 3172 if (mWinFrame.equals(args.arg1) 3173 && mPendingOverscanInsets.equals(args.arg5) 3174 && mPendingContentInsets.equals(args.arg2) 3175 && mPendingStableInsets.equals(args.arg6) 3176 && mPendingVisibleInsets.equals(args.arg3) 3177 && mPendingOutsets.equals(args.arg7) 3178 && args.arg4 == null) { 3179 break; 3180 } 3181 } // fall through... 3182 case MSG_RESIZED_REPORT: 3183 if (mAdded) { 3184 SomeArgs args = (SomeArgs) msg.obj; 3185 3186 Configuration config = (Configuration) args.arg4; 3187 if (config != null) { 3188 updateConfiguration(config, false); 3189 } 3190 3191 mWinFrame.set((Rect) args.arg1); 3192 mPendingOverscanInsets.set((Rect) args.arg5); 3193 mPendingContentInsets.set((Rect) args.arg2); 3194 mPendingStableInsets.set((Rect) args.arg6); 3195 mPendingVisibleInsets.set((Rect) args.arg3); 3196 mPendingOutsets.set((Rect) args.arg7); 3197 3198 args.recycle(); 3199 3200 if (msg.what == MSG_RESIZED_REPORT) { 3201 mReportNextDraw = true; 3202 } 3203 3204 requestLayout(); 3205 } 3206 break; 3207 case MSG_WINDOW_MOVED: 3208 if (mAdded) { 3209 final int w = mWinFrame.width(); 3210 final int h = mWinFrame.height(); 3211 final int l = msg.arg1; 3212 final int t = msg.arg2; 3213 mWinFrame.left = l; 3214 mWinFrame.right = l + w; 3215 mWinFrame.top = t; 3216 mWinFrame.bottom = t + h; 3217 3218 requestLayout(); 3219 } 3220 break; 3221 case MSG_WINDOW_FOCUS_CHANGED: { 3222 if (mAdded) { 3223 boolean hasWindowFocus = msg.arg1 != 0; 3224 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3225 3226 profileRendering(hasWindowFocus); 3227 3228 if (hasWindowFocus) { 3229 boolean inTouchMode = msg.arg2 != 0; 3230 ensureTouchModeLocally(inTouchMode); 3231 3232 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3233 mFullRedrawNeeded = true; 3234 try { 3235 final WindowManager.LayoutParams lp = mWindowAttributes; 3236 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3237 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3238 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 3239 } catch (OutOfResourcesException e) { 3240 Log.e(TAG, "OutOfResourcesException locking surface", e); 3241 try { 3242 if (!mWindowSession.outOfMemory(mWindow)) { 3243 Slog.w(TAG, "No processes killed for memory; killing self"); 3244 Process.killProcess(Process.myPid()); 3245 } 3246 } catch (RemoteException ex) { 3247 } 3248 // Retry in a bit. 3249 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3250 return; 3251 } 3252 } 3253 } 3254 3255 mLastWasImTarget = WindowManager.LayoutParams 3256 .mayUseInputMethod(mWindowAttributes.flags); 3257 3258 InputMethodManager imm = InputMethodManager.peekInstance(); 3259 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3260 imm.onPreWindowFocus(mView, hasWindowFocus); 3261 } 3262 if (mView != null) { 3263 mAttachInfo.mKeyDispatchState.reset(); 3264 mView.dispatchWindowFocusChanged(hasWindowFocus); 3265 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3266 } 3267 3268 // Note: must be done after the focus change callbacks, 3269 // so all of the view state is set up correctly. 3270 if (hasWindowFocus) { 3271 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3272 imm.onPostWindowFocus(mView, mView.findFocus(), 3273 mWindowAttributes.softInputMode, 3274 !mHasHadWindowFocus, mWindowAttributes.flags); 3275 } 3276 // Clear the forward bit. We can just do this directly, since 3277 // the window manager doesn't care about it. 3278 mWindowAttributes.softInputMode &= 3279 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3280 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3281 .softInputMode &= 3282 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3283 mHasHadWindowFocus = true; 3284 } 3285 3286 if (mView != null && mAccessibilityManager.isEnabled()) { 3287 if (hasWindowFocus) { 3288 mView.sendAccessibilityEvent( 3289 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3290 } 3291 } 3292 } 3293 } break; 3294 case MSG_DIE: 3295 doDie(); 3296 break; 3297 case MSG_DISPATCH_INPUT_EVENT: { 3298 SomeArgs args = (SomeArgs)msg.obj; 3299 InputEvent event = (InputEvent)args.arg1; 3300 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3301 enqueueInputEvent(event, receiver, 0, true); 3302 args.recycle(); 3303 } break; 3304 case MSG_SYNTHESIZE_INPUT_EVENT: { 3305 InputEvent event = (InputEvent)msg.obj; 3306 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3307 } break; 3308 case MSG_DISPATCH_KEY_FROM_IME: { 3309 if (LOCAL_LOGV) Log.v( 3310 TAG, "Dispatching key " 3311 + msg.obj + " from IME to " + mView); 3312 KeyEvent event = (KeyEvent)msg.obj; 3313 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3314 // The IME is trying to say this event is from the 3315 // system! Bad bad bad! 3316 //noinspection UnusedAssignment 3317 event = KeyEvent.changeFlags(event, event.getFlags() & 3318 ~KeyEvent.FLAG_FROM_SYSTEM); 3319 } 3320 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3321 } break; 3322 case MSG_FINISH_INPUT_CONNECTION: { 3323 InputMethodManager imm = InputMethodManager.peekInstance(); 3324 if (imm != null) { 3325 imm.reportFinishInputConnection((InputConnection)msg.obj); 3326 } 3327 } break; 3328 case MSG_CHECK_FOCUS: { 3329 InputMethodManager imm = InputMethodManager.peekInstance(); 3330 if (imm != null) { 3331 imm.checkFocus(); 3332 } 3333 } break; 3334 case MSG_CLOSE_SYSTEM_DIALOGS: { 3335 if (mView != null) { 3336 mView.onCloseSystemDialogs((String)msg.obj); 3337 } 3338 } break; 3339 case MSG_DISPATCH_DRAG_EVENT: 3340 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3341 DragEvent event = (DragEvent)msg.obj; 3342 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3343 handleDragEvent(event); 3344 } break; 3345 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3346 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3347 } break; 3348 case MSG_UPDATE_CONFIGURATION: { 3349 Configuration config = (Configuration)msg.obj; 3350 if (config.isOtherSeqNewer(mLastConfiguration)) { 3351 config = mLastConfiguration; 3352 } 3353 updateConfiguration(config, false); 3354 } break; 3355 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3356 setAccessibilityFocus(null, null); 3357 } break; 3358 case MSG_DISPATCH_WINDOW_ANIMATION_STARTED: { 3359 int remainingFrameCount = msg.arg1; 3360 handleDispatchWindowAnimationStarted(remainingFrameCount); 3361 } break; 3362 case MSG_DISPATCH_WINDOW_ANIMATION_STOPPED: { 3363 handleDispatchWindowAnimationStopped(); 3364 } break; 3365 case MSG_INVALIDATE_WORLD: { 3366 if (mView != null) { 3367 invalidateWorld(mView); 3368 } 3369 } break; 3370 case MSG_DISPATCH_WINDOW_SHOWN: { 3371 handleDispatchWindowShown(); 3372 } 3373 } 3374 } 3375 } 3376 3377 final ViewRootHandler mHandler = new ViewRootHandler(); 3378 3379 /** 3380 * Something in the current window tells us we need to change the touch mode. For 3381 * example, we are not in touch mode, and the user touches the screen. 3382 * 3383 * If the touch mode has changed, tell the window manager, and handle it locally. 3384 * 3385 * @param inTouchMode Whether we want to be in touch mode. 3386 * @return True if the touch mode changed and focus changed was changed as a result 3387 */ 3388 boolean ensureTouchMode(boolean inTouchMode) { 3389 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3390 + "touch mode is " + mAttachInfo.mInTouchMode); 3391 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3392 3393 // tell the window manager 3394 try { 3395 if (!isInLocalFocusMode()) { 3396 mWindowSession.setInTouchMode(inTouchMode); 3397 } 3398 } catch (RemoteException e) { 3399 throw new RuntimeException(e); 3400 } 3401 3402 // handle the change 3403 return ensureTouchModeLocally(inTouchMode); 3404 } 3405 3406 /** 3407 * Ensure that the touch mode for this window is set, and if it is changing, 3408 * take the appropriate action. 3409 * @param inTouchMode Whether we want to be in touch mode. 3410 * @return True if the touch mode changed and focus changed was changed as a result 3411 */ 3412 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3413 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3414 + "touch mode is " + mAttachInfo.mInTouchMode); 3415 3416 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3417 3418 mAttachInfo.mInTouchMode = inTouchMode; 3419 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3420 3421 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3422 } 3423 3424 private boolean enterTouchMode() { 3425 if (mView != null && mView.hasFocus()) { 3426 // note: not relying on mFocusedView here because this could 3427 // be when the window is first being added, and mFocused isn't 3428 // set yet. 3429 final View focused = mView.findFocus(); 3430 if (focused != null && !focused.isFocusableInTouchMode()) { 3431 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3432 if (ancestorToTakeFocus != null) { 3433 // there is an ancestor that wants focus after its 3434 // descendants that is focusable in touch mode.. give it 3435 // focus 3436 return ancestorToTakeFocus.requestFocus(); 3437 } else { 3438 // There's nothing to focus. Clear and propagate through the 3439 // hierarchy, but don't attempt to place new focus. 3440 focused.clearFocusInternal(null, true, false); 3441 return true; 3442 } 3443 } 3444 } 3445 return false; 3446 } 3447 3448 /** 3449 * Find an ancestor of focused that wants focus after its descendants and is 3450 * focusable in touch mode. 3451 * @param focused The currently focused view. 3452 * @return An appropriate view, or null if no such view exists. 3453 */ 3454 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3455 ViewParent parent = focused.getParent(); 3456 while (parent instanceof ViewGroup) { 3457 final ViewGroup vgParent = (ViewGroup) parent; 3458 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3459 && vgParent.isFocusableInTouchMode()) { 3460 return vgParent; 3461 } 3462 if (vgParent.isRootNamespace()) { 3463 return null; 3464 } else { 3465 parent = vgParent.getParent(); 3466 } 3467 } 3468 return null; 3469 } 3470 3471 private boolean leaveTouchMode() { 3472 if (mView != null) { 3473 if (mView.hasFocus()) { 3474 View focusedView = mView.findFocus(); 3475 if (!(focusedView instanceof ViewGroup)) { 3476 // some view has focus, let it keep it 3477 return false; 3478 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3479 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3480 // some view group has focus, and doesn't prefer its children 3481 // over itself for focus, so let them keep it. 3482 return false; 3483 } 3484 } 3485 3486 // find the best view to give focus to in this brave new non-touch-mode 3487 // world 3488 final View focused = focusSearch(null, View.FOCUS_DOWN); 3489 if (focused != null) { 3490 return focused.requestFocus(View.FOCUS_DOWN); 3491 } 3492 } 3493 return false; 3494 } 3495 3496 /** 3497 * Base class for implementing a stage in the chain of responsibility 3498 * for processing input events. 3499 * <p> 3500 * Events are delivered to the stage by the {@link #deliver} method. The stage 3501 * then has the choice of finishing the event or forwarding it to the next stage. 3502 * </p> 3503 */ 3504 abstract class InputStage { 3505 private final InputStage mNext; 3506 3507 protected static final int FORWARD = 0; 3508 protected static final int FINISH_HANDLED = 1; 3509 protected static final int FINISH_NOT_HANDLED = 2; 3510 3511 /** 3512 * Creates an input stage. 3513 * @param next The next stage to which events should be forwarded. 3514 */ 3515 public InputStage(InputStage next) { 3516 mNext = next; 3517 } 3518 3519 /** 3520 * Delivers an event to be processed. 3521 */ 3522 public final void deliver(QueuedInputEvent q) { 3523 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3524 forward(q); 3525 } else if (shouldDropInputEvent(q)) { 3526 finish(q, false); 3527 } else { 3528 apply(q, onProcess(q)); 3529 } 3530 } 3531 3532 /** 3533 * Marks the the input event as finished then forwards it to the next stage. 3534 */ 3535 protected void finish(QueuedInputEvent q, boolean handled) { 3536 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3537 if (handled) { 3538 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3539 } 3540 forward(q); 3541 } 3542 3543 /** 3544 * Forwards the event to the next stage. 3545 */ 3546 protected void forward(QueuedInputEvent q) { 3547 onDeliverToNext(q); 3548 } 3549 3550 /** 3551 * Applies a result code from {@link #onProcess} to the specified event. 3552 */ 3553 protected void apply(QueuedInputEvent q, int result) { 3554 if (result == FORWARD) { 3555 forward(q); 3556 } else if (result == FINISH_HANDLED) { 3557 finish(q, true); 3558 } else if (result == FINISH_NOT_HANDLED) { 3559 finish(q, false); 3560 } else { 3561 throw new IllegalArgumentException("Invalid result: " + result); 3562 } 3563 } 3564 3565 /** 3566 * Called when an event is ready to be processed. 3567 * @return A result code indicating how the event was handled. 3568 */ 3569 protected int onProcess(QueuedInputEvent q) { 3570 return FORWARD; 3571 } 3572 3573 /** 3574 * Called when an event is being delivered to the next stage. 3575 */ 3576 protected void onDeliverToNext(QueuedInputEvent q) { 3577 if (DEBUG_INPUT_STAGES) { 3578 Log.v(TAG, "Done with " + getClass().getSimpleName() + ". " + q); 3579 } 3580 if (mNext != null) { 3581 mNext.deliver(q); 3582 } else { 3583 finishInputEvent(q); 3584 } 3585 } 3586 3587 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3588 if (mView == null || !mAdded) { 3589 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3590 return true; 3591 } else if ((!mAttachInfo.mHasWindowFocus 3592 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) || mStopped 3593 || (mPausedForTransition && !isBack(q.mEvent))) { 3594 // This is a focus event and the window doesn't currently have input focus or 3595 // has stopped. This could be an event that came back from the previous stage 3596 // but the window has lost focus or stopped in the meantime. 3597 if (isTerminalInputEvent(q.mEvent)) { 3598 // Don't drop terminal input events, however mark them as canceled. 3599 q.mEvent.cancel(); 3600 Slog.w(TAG, "Cancelling event due to no window focus: " + q.mEvent); 3601 return false; 3602 } 3603 3604 // Drop non-terminal input events. 3605 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3606 return true; 3607 } 3608 return false; 3609 } 3610 3611 void dump(String prefix, PrintWriter writer) { 3612 if (mNext != null) { 3613 mNext.dump(prefix, writer); 3614 } 3615 } 3616 3617 private boolean isBack(InputEvent event) { 3618 if (event instanceof KeyEvent) { 3619 return ((KeyEvent) event).getKeyCode() == KeyEvent.KEYCODE_BACK; 3620 } else { 3621 return false; 3622 } 3623 } 3624 } 3625 3626 /** 3627 * Base class for implementing an input pipeline stage that supports 3628 * asynchronous and out-of-order processing of input events. 3629 * <p> 3630 * In addition to what a normal input stage can do, an asynchronous 3631 * input stage may also defer an input event that has been delivered to it 3632 * and finish or forward it later. 3633 * </p> 3634 */ 3635 abstract class AsyncInputStage extends InputStage { 3636 private final String mTraceCounter; 3637 3638 private QueuedInputEvent mQueueHead; 3639 private QueuedInputEvent mQueueTail; 3640 private int mQueueLength; 3641 3642 protected static final int DEFER = 3; 3643 3644 /** 3645 * Creates an asynchronous input stage. 3646 * @param next The next stage to which events should be forwarded. 3647 * @param traceCounter The name of a counter to record the size of 3648 * the queue of pending events. 3649 */ 3650 public AsyncInputStage(InputStage next, String traceCounter) { 3651 super(next); 3652 mTraceCounter = traceCounter; 3653 } 3654 3655 /** 3656 * Marks the event as deferred, which is to say that it will be handled 3657 * asynchronously. The caller is responsible for calling {@link #forward} 3658 * or {@link #finish} later when it is done handling the event. 3659 */ 3660 protected void defer(QueuedInputEvent q) { 3661 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3662 enqueue(q); 3663 } 3664 3665 @Override 3666 protected void forward(QueuedInputEvent q) { 3667 // Clear the deferred flag. 3668 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3669 3670 // Fast path if the queue is empty. 3671 QueuedInputEvent curr = mQueueHead; 3672 if (curr == null) { 3673 super.forward(q); 3674 return; 3675 } 3676 3677 // Determine whether the event must be serialized behind any others 3678 // before it can be delivered to the next stage. This is done because 3679 // deferred events might be handled out of order by the stage. 3680 final int deviceId = q.mEvent.getDeviceId(); 3681 QueuedInputEvent prev = null; 3682 boolean blocked = false; 3683 while (curr != null && curr != q) { 3684 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3685 blocked = true; 3686 } 3687 prev = curr; 3688 curr = curr.mNext; 3689 } 3690 3691 // If the event is blocked, then leave it in the queue to be delivered later. 3692 // Note that the event might not yet be in the queue if it was not previously 3693 // deferred so we will enqueue it if needed. 3694 if (blocked) { 3695 if (curr == null) { 3696 enqueue(q); 3697 } 3698 return; 3699 } 3700 3701 // The event is not blocked. Deliver it immediately. 3702 if (curr != null) { 3703 curr = curr.mNext; 3704 dequeue(q, prev); 3705 } 3706 super.forward(q); 3707 3708 // Dequeuing this event may have unblocked successors. Deliver them. 3709 while (curr != null) { 3710 if (deviceId == curr.mEvent.getDeviceId()) { 3711 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3712 break; 3713 } 3714 QueuedInputEvent next = curr.mNext; 3715 dequeue(curr, prev); 3716 super.forward(curr); 3717 curr = next; 3718 } else { 3719 prev = curr; 3720 curr = curr.mNext; 3721 } 3722 } 3723 } 3724 3725 @Override 3726 protected void apply(QueuedInputEvent q, int result) { 3727 if (result == DEFER) { 3728 defer(q); 3729 } else { 3730 super.apply(q, result); 3731 } 3732 } 3733 3734 private void enqueue(QueuedInputEvent q) { 3735 if (mQueueTail == null) { 3736 mQueueHead = q; 3737 mQueueTail = q; 3738 } else { 3739 mQueueTail.mNext = q; 3740 mQueueTail = q; 3741 } 3742 3743 mQueueLength += 1; 3744 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3745 } 3746 3747 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3748 if (prev == null) { 3749 mQueueHead = q.mNext; 3750 } else { 3751 prev.mNext = q.mNext; 3752 } 3753 if (mQueueTail == q) { 3754 mQueueTail = prev; 3755 } 3756 q.mNext = null; 3757 3758 mQueueLength -= 1; 3759 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3760 } 3761 3762 @Override 3763 void dump(String prefix, PrintWriter writer) { 3764 writer.print(prefix); 3765 writer.print(getClass().getName()); 3766 writer.print(": mQueueLength="); 3767 writer.println(mQueueLength); 3768 3769 super.dump(prefix, writer); 3770 } 3771 } 3772 3773 /** 3774 * Delivers pre-ime input events to a native activity. 3775 * Does not support pointer events. 3776 */ 3777 final class NativePreImeInputStage extends AsyncInputStage 3778 implements InputQueue.FinishedInputEventCallback { 3779 public NativePreImeInputStage(InputStage next, String traceCounter) { 3780 super(next, traceCounter); 3781 } 3782 3783 @Override 3784 protected int onProcess(QueuedInputEvent q) { 3785 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3786 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3787 return DEFER; 3788 } 3789 return FORWARD; 3790 } 3791 3792 @Override 3793 public void onFinishedInputEvent(Object token, boolean handled) { 3794 QueuedInputEvent q = (QueuedInputEvent)token; 3795 if (handled) { 3796 finish(q, true); 3797 return; 3798 } 3799 forward(q); 3800 } 3801 } 3802 3803 /** 3804 * Delivers pre-ime input events to the view hierarchy. 3805 * Does not support pointer events. 3806 */ 3807 final class ViewPreImeInputStage extends InputStage { 3808 public ViewPreImeInputStage(InputStage next) { 3809 super(next); 3810 } 3811 3812 @Override 3813 protected int onProcess(QueuedInputEvent q) { 3814 if (q.mEvent instanceof KeyEvent) { 3815 return processKeyEvent(q); 3816 } 3817 return FORWARD; 3818 } 3819 3820 private int processKeyEvent(QueuedInputEvent q) { 3821 final KeyEvent event = (KeyEvent)q.mEvent; 3822 if (mView.dispatchKeyEventPreIme(event)) { 3823 return FINISH_HANDLED; 3824 } 3825 return FORWARD; 3826 } 3827 } 3828 3829 /** 3830 * Delivers input events to the ime. 3831 * Does not support pointer events. 3832 */ 3833 final class ImeInputStage extends AsyncInputStage 3834 implements InputMethodManager.FinishedInputEventCallback { 3835 public ImeInputStage(InputStage next, String traceCounter) { 3836 super(next, traceCounter); 3837 } 3838 3839 @Override 3840 protected int onProcess(QueuedInputEvent q) { 3841 if (mLastWasImTarget && !isInLocalFocusMode()) { 3842 InputMethodManager imm = InputMethodManager.peekInstance(); 3843 if (imm != null) { 3844 final InputEvent event = q.mEvent; 3845 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3846 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3847 if (result == InputMethodManager.DISPATCH_HANDLED) { 3848 return FINISH_HANDLED; 3849 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3850 // The IME could not handle it, so skip along to the next InputStage 3851 return FORWARD; 3852 } else { 3853 return DEFER; // callback will be invoked later 3854 } 3855 } 3856 } 3857 return FORWARD; 3858 } 3859 3860 @Override 3861 public void onFinishedInputEvent(Object token, boolean handled) { 3862 QueuedInputEvent q = (QueuedInputEvent)token; 3863 if (handled) { 3864 finish(q, true); 3865 return; 3866 } 3867 forward(q); 3868 } 3869 } 3870 3871 /** 3872 * Performs early processing of post-ime input events. 3873 */ 3874 final class EarlyPostImeInputStage extends InputStage { 3875 public EarlyPostImeInputStage(InputStage next) { 3876 super(next); 3877 } 3878 3879 @Override 3880 protected int onProcess(QueuedInputEvent q) { 3881 if (q.mEvent instanceof KeyEvent) { 3882 return processKeyEvent(q); 3883 } else { 3884 final int source = q.mEvent.getSource(); 3885 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3886 return processPointerEvent(q); 3887 } 3888 } 3889 return FORWARD; 3890 } 3891 3892 private int processKeyEvent(QueuedInputEvent q) { 3893 final KeyEvent event = (KeyEvent)q.mEvent; 3894 3895 // If the key's purpose is to exit touch mode then we consume it 3896 // and consider it handled. 3897 if (checkForLeavingTouchModeAndConsume(event)) { 3898 return FINISH_HANDLED; 3899 } 3900 3901 // Make sure the fallback event policy sees all keys that will be 3902 // delivered to the view hierarchy. 3903 mFallbackEventHandler.preDispatchKeyEvent(event); 3904 return FORWARD; 3905 } 3906 3907 private int processPointerEvent(QueuedInputEvent q) { 3908 final MotionEvent event = (MotionEvent)q.mEvent; 3909 3910 // Translate the pointer event for compatibility, if needed. 3911 if (mTranslator != null) { 3912 mTranslator.translateEventInScreenToAppWindow(event); 3913 } 3914 3915 // Enter touch mode on down or scroll. 3916 final int action = event.getAction(); 3917 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3918 ensureTouchMode(true); 3919 } 3920 3921 // Offset the scroll position. 3922 if (mCurScrollY != 0) { 3923 event.offsetLocation(0, mCurScrollY); 3924 } 3925 3926 // Remember the touch position for possible drag-initiation. 3927 if (event.isTouchEvent()) { 3928 mLastTouchPoint.x = event.getRawX(); 3929 mLastTouchPoint.y = event.getRawY(); 3930 } 3931 return FORWARD; 3932 } 3933 } 3934 3935 /** 3936 * Delivers post-ime input events to a native activity. 3937 */ 3938 final class NativePostImeInputStage extends AsyncInputStage 3939 implements InputQueue.FinishedInputEventCallback { 3940 public NativePostImeInputStage(InputStage next, String traceCounter) { 3941 super(next, traceCounter); 3942 } 3943 3944 @Override 3945 protected int onProcess(QueuedInputEvent q) { 3946 if (mInputQueue != null) { 3947 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3948 return DEFER; 3949 } 3950 return FORWARD; 3951 } 3952 3953 @Override 3954 public void onFinishedInputEvent(Object token, boolean handled) { 3955 QueuedInputEvent q = (QueuedInputEvent)token; 3956 if (handled) { 3957 finish(q, true); 3958 return; 3959 } 3960 forward(q); 3961 } 3962 } 3963 3964 /** 3965 * Delivers post-ime input events to the view hierarchy. 3966 */ 3967 final class ViewPostImeInputStage extends InputStage { 3968 public ViewPostImeInputStage(InputStage next) { 3969 super(next); 3970 } 3971 3972 @Override 3973 protected int onProcess(QueuedInputEvent q) { 3974 if (q.mEvent instanceof KeyEvent) { 3975 return processKeyEvent(q); 3976 } else { 3977 // If delivering a new non-key event, make sure the window is 3978 // now allowed to start updating. 3979 handleDispatchWindowAnimationStopped(); 3980 final int source = q.mEvent.getSource(); 3981 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3982 return processPointerEvent(q); 3983 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3984 return processTrackballEvent(q); 3985 } else { 3986 return processGenericMotionEvent(q); 3987 } 3988 } 3989 } 3990 3991 @Override 3992 protected void onDeliverToNext(QueuedInputEvent q) { 3993 if (mUnbufferedInputDispatch 3994 && q.mEvent instanceof MotionEvent 3995 && ((MotionEvent)q.mEvent).isTouchEvent() 3996 && isTerminalInputEvent(q.mEvent)) { 3997 mUnbufferedInputDispatch = false; 3998 scheduleConsumeBatchedInput(); 3999 } 4000 super.onDeliverToNext(q); 4001 } 4002 4003 private int processKeyEvent(QueuedInputEvent q) { 4004 final KeyEvent event = (KeyEvent)q.mEvent; 4005 4006 if (event.getAction() != KeyEvent.ACTION_UP) { 4007 // If delivering a new key event, make sure the window is 4008 // now allowed to start updating. 4009 handleDispatchWindowAnimationStopped(); 4010 } 4011 4012 // Deliver the key to the view hierarchy. 4013 if (mView.dispatchKeyEvent(event)) { 4014 return FINISH_HANDLED; 4015 } 4016 4017 if (shouldDropInputEvent(q)) { 4018 return FINISH_NOT_HANDLED; 4019 } 4020 4021 // If the Control modifier is held, try to interpret the key as a shortcut. 4022 if (event.getAction() == KeyEvent.ACTION_DOWN 4023 && event.isCtrlPressed() 4024 && event.getRepeatCount() == 0 4025 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4026 if (mView.dispatchKeyShortcutEvent(event)) { 4027 return FINISH_HANDLED; 4028 } 4029 if (shouldDropInputEvent(q)) { 4030 return FINISH_NOT_HANDLED; 4031 } 4032 } 4033 4034 // Apply the fallback event policy. 4035 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4036 return FINISH_HANDLED; 4037 } 4038 if (shouldDropInputEvent(q)) { 4039 return FINISH_NOT_HANDLED; 4040 } 4041 4042 // Handle automatic focus changes. 4043 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4044 int direction = 0; 4045 switch (event.getKeyCode()) { 4046 case KeyEvent.KEYCODE_DPAD_LEFT: 4047 if (event.hasNoModifiers()) { 4048 direction = View.FOCUS_LEFT; 4049 } 4050 break; 4051 case KeyEvent.KEYCODE_DPAD_RIGHT: 4052 if (event.hasNoModifiers()) { 4053 direction = View.FOCUS_RIGHT; 4054 } 4055 break; 4056 case KeyEvent.KEYCODE_DPAD_UP: 4057 if (event.hasNoModifiers()) { 4058 direction = View.FOCUS_UP; 4059 } 4060 break; 4061 case KeyEvent.KEYCODE_DPAD_DOWN: 4062 if (event.hasNoModifiers()) { 4063 direction = View.FOCUS_DOWN; 4064 } 4065 break; 4066 case KeyEvent.KEYCODE_TAB: 4067 if (event.hasNoModifiers()) { 4068 direction = View.FOCUS_FORWARD; 4069 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4070 direction = View.FOCUS_BACKWARD; 4071 } 4072 break; 4073 } 4074 if (direction != 0) { 4075 View focused = mView.findFocus(); 4076 if (focused != null) { 4077 View v = focused.focusSearch(direction); 4078 if (v != null && v != focused) { 4079 // do the math the get the interesting rect 4080 // of previous focused into the coord system of 4081 // newly focused view 4082 focused.getFocusedRect(mTempRect); 4083 if (mView instanceof ViewGroup) { 4084 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4085 focused, mTempRect); 4086 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4087 v, mTempRect); 4088 } 4089 if (v.requestFocus(direction, mTempRect)) { 4090 playSoundEffect(SoundEffectConstants 4091 .getContantForFocusDirection(direction)); 4092 return FINISH_HANDLED; 4093 } 4094 } 4095 4096 // Give the focused view a last chance to handle the dpad key. 4097 if (mView.dispatchUnhandledMove(focused, direction)) { 4098 return FINISH_HANDLED; 4099 } 4100 } else { 4101 // find the best view to give focus to in this non-touch-mode with no-focus 4102 View v = focusSearch(null, direction); 4103 if (v != null && v.requestFocus(direction)) { 4104 return FINISH_HANDLED; 4105 } 4106 } 4107 } 4108 } 4109 return FORWARD; 4110 } 4111 4112 private int processPointerEvent(QueuedInputEvent q) { 4113 final MotionEvent event = (MotionEvent)q.mEvent; 4114 4115 mAttachInfo.mUnbufferedDispatchRequested = false; 4116 boolean handled = mView.dispatchPointerEvent(event); 4117 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4118 mUnbufferedInputDispatch = true; 4119 if (mConsumeBatchedInputScheduled) { 4120 scheduleConsumeBatchedInputImmediately(); 4121 } 4122 } 4123 return handled ? FINISH_HANDLED : FORWARD; 4124 } 4125 4126 private int processTrackballEvent(QueuedInputEvent q) { 4127 final MotionEvent event = (MotionEvent)q.mEvent; 4128 4129 if (mView.dispatchTrackballEvent(event)) { 4130 return FINISH_HANDLED; 4131 } 4132 return FORWARD; 4133 } 4134 4135 private int processGenericMotionEvent(QueuedInputEvent q) { 4136 final MotionEvent event = (MotionEvent)q.mEvent; 4137 4138 // Deliver the event to the view. 4139 if (mView.dispatchGenericMotionEvent(event)) { 4140 return FINISH_HANDLED; 4141 } 4142 return FORWARD; 4143 } 4144 } 4145 4146 /** 4147 * Performs synthesis of new input events from unhandled input events. 4148 */ 4149 final class SyntheticInputStage extends InputStage { 4150 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4151 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4152 private final SyntheticTouchNavigationHandler mTouchNavigation = 4153 new SyntheticTouchNavigationHandler(); 4154 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4155 4156 public SyntheticInputStage() { 4157 super(null); 4158 } 4159 4160 @Override 4161 protected int onProcess(QueuedInputEvent q) { 4162 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4163 if (q.mEvent instanceof MotionEvent) { 4164 final MotionEvent event = (MotionEvent)q.mEvent; 4165 final int source = event.getSource(); 4166 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4167 mTrackball.process(event); 4168 return FINISH_HANDLED; 4169 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4170 mJoystick.process(event); 4171 return FINISH_HANDLED; 4172 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4173 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4174 mTouchNavigation.process(event); 4175 return FINISH_HANDLED; 4176 } 4177 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4178 mKeyboard.process((KeyEvent)q.mEvent); 4179 return FINISH_HANDLED; 4180 } 4181 4182 return FORWARD; 4183 } 4184 4185 @Override 4186 protected void onDeliverToNext(QueuedInputEvent q) { 4187 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4188 // Cancel related synthetic events if any prior stage has handled the event. 4189 if (q.mEvent instanceof MotionEvent) { 4190 final MotionEvent event = (MotionEvent)q.mEvent; 4191 final int source = event.getSource(); 4192 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4193 mTrackball.cancel(event); 4194 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4195 mJoystick.cancel(event); 4196 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4197 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4198 mTouchNavigation.cancel(event); 4199 } 4200 } 4201 } 4202 super.onDeliverToNext(q); 4203 } 4204 } 4205 4206 /** 4207 * Creates dpad events from unhandled trackball movements. 4208 */ 4209 final class SyntheticTrackballHandler { 4210 private final TrackballAxis mX = new TrackballAxis(); 4211 private final TrackballAxis mY = new TrackballAxis(); 4212 private long mLastTime; 4213 4214 public void process(MotionEvent event) { 4215 // Translate the trackball event into DPAD keys and try to deliver those. 4216 long curTime = SystemClock.uptimeMillis(); 4217 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4218 // It has been too long since the last movement, 4219 // so restart at the beginning. 4220 mX.reset(0); 4221 mY.reset(0); 4222 mLastTime = curTime; 4223 } 4224 4225 final int action = event.getAction(); 4226 final int metaState = event.getMetaState(); 4227 switch (action) { 4228 case MotionEvent.ACTION_DOWN: 4229 mX.reset(2); 4230 mY.reset(2); 4231 enqueueInputEvent(new KeyEvent(curTime, curTime, 4232 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4233 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4234 InputDevice.SOURCE_KEYBOARD)); 4235 break; 4236 case MotionEvent.ACTION_UP: 4237 mX.reset(2); 4238 mY.reset(2); 4239 enqueueInputEvent(new KeyEvent(curTime, curTime, 4240 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4241 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4242 InputDevice.SOURCE_KEYBOARD)); 4243 break; 4244 } 4245 4246 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4247 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4248 + " move=" + event.getX() 4249 + " / Y=" + mY.position + " step=" 4250 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4251 + " move=" + event.getY()); 4252 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4253 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4254 4255 // Generate DPAD events based on the trackball movement. 4256 // We pick the axis that has moved the most as the direction of 4257 // the DPAD. When we generate DPAD events for one axis, then the 4258 // other axis is reset -- we don't want to perform DPAD jumps due 4259 // to slight movements in the trackball when making major movements 4260 // along the other axis. 4261 int keycode = 0; 4262 int movement = 0; 4263 float accel = 1; 4264 if (xOff > yOff) { 4265 movement = mX.generate(); 4266 if (movement != 0) { 4267 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4268 : KeyEvent.KEYCODE_DPAD_LEFT; 4269 accel = mX.acceleration; 4270 mY.reset(2); 4271 } 4272 } else if (yOff > 0) { 4273 movement = mY.generate(); 4274 if (movement != 0) { 4275 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4276 : KeyEvent.KEYCODE_DPAD_UP; 4277 accel = mY.acceleration; 4278 mX.reset(2); 4279 } 4280 } 4281 4282 if (keycode != 0) { 4283 if (movement < 0) movement = -movement; 4284 int accelMovement = (int)(movement * accel); 4285 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4286 + " accelMovement=" + accelMovement 4287 + " accel=" + accel); 4288 if (accelMovement > movement) { 4289 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4290 + keycode); 4291 movement--; 4292 int repeatCount = accelMovement - movement; 4293 enqueueInputEvent(new KeyEvent(curTime, curTime, 4294 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4295 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4296 InputDevice.SOURCE_KEYBOARD)); 4297 } 4298 while (movement > 0) { 4299 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4300 + keycode); 4301 movement--; 4302 curTime = SystemClock.uptimeMillis(); 4303 enqueueInputEvent(new KeyEvent(curTime, curTime, 4304 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4305 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4306 InputDevice.SOURCE_KEYBOARD)); 4307 enqueueInputEvent(new KeyEvent(curTime, curTime, 4308 KeyEvent.ACTION_UP, keycode, 0, metaState, 4309 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4310 InputDevice.SOURCE_KEYBOARD)); 4311 } 4312 mLastTime = curTime; 4313 } 4314 } 4315 4316 public void cancel(MotionEvent event) { 4317 mLastTime = Integer.MIN_VALUE; 4318 4319 // If we reach this, we consumed a trackball event. 4320 // Because we will not translate the trackball event into a key event, 4321 // touch mode will not exit, so we exit touch mode here. 4322 if (mView != null && mAdded) { 4323 ensureTouchMode(false); 4324 } 4325 } 4326 } 4327 4328 /** 4329 * Maintains state information for a single trackball axis, generating 4330 * discrete (DPAD) movements based on raw trackball motion. 4331 */ 4332 static final class TrackballAxis { 4333 /** 4334 * The maximum amount of acceleration we will apply. 4335 */ 4336 static final float MAX_ACCELERATION = 20; 4337 4338 /** 4339 * The maximum amount of time (in milliseconds) between events in order 4340 * for us to consider the user to be doing fast trackball movements, 4341 * and thus apply an acceleration. 4342 */ 4343 static final long FAST_MOVE_TIME = 150; 4344 4345 /** 4346 * Scaling factor to the time (in milliseconds) between events to how 4347 * much to multiple/divide the current acceleration. When movement 4348 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4349 * FAST_MOVE_TIME it divides it. 4350 */ 4351 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4352 4353 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4354 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4355 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4356 4357 float position; 4358 float acceleration = 1; 4359 long lastMoveTime = 0; 4360 int step; 4361 int dir; 4362 int nonAccelMovement; 4363 4364 void reset(int _step) { 4365 position = 0; 4366 acceleration = 1; 4367 lastMoveTime = 0; 4368 step = _step; 4369 dir = 0; 4370 } 4371 4372 /** 4373 * Add trackball movement into the state. If the direction of movement 4374 * has been reversed, the state is reset before adding the 4375 * movement (so that you don't have to compensate for any previously 4376 * collected movement before see the result of the movement in the 4377 * new direction). 4378 * 4379 * @return Returns the absolute value of the amount of movement 4380 * collected so far. 4381 */ 4382 float collect(float off, long time, String axis) { 4383 long normTime; 4384 if (off > 0) { 4385 normTime = (long)(off * FAST_MOVE_TIME); 4386 if (dir < 0) { 4387 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4388 position = 0; 4389 step = 0; 4390 acceleration = 1; 4391 lastMoveTime = 0; 4392 } 4393 dir = 1; 4394 } else if (off < 0) { 4395 normTime = (long)((-off) * FAST_MOVE_TIME); 4396 if (dir > 0) { 4397 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4398 position = 0; 4399 step = 0; 4400 acceleration = 1; 4401 lastMoveTime = 0; 4402 } 4403 dir = -1; 4404 } else { 4405 normTime = 0; 4406 } 4407 4408 // The number of milliseconds between each movement that is 4409 // considered "normal" and will not result in any acceleration 4410 // or deceleration, scaled by the offset we have here. 4411 if (normTime > 0) { 4412 long delta = time - lastMoveTime; 4413 lastMoveTime = time; 4414 float acc = acceleration; 4415 if (delta < normTime) { 4416 // The user is scrolling rapidly, so increase acceleration. 4417 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4418 if (scale > 1) acc *= scale; 4419 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4420 + off + " normTime=" + normTime + " delta=" + delta 4421 + " scale=" + scale + " acc=" + acc); 4422 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4423 } else { 4424 // The user is scrolling slowly, so decrease acceleration. 4425 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4426 if (scale > 1) acc /= scale; 4427 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4428 + off + " normTime=" + normTime + " delta=" + delta 4429 + " scale=" + scale + " acc=" + acc); 4430 acceleration = acc > 1 ? acc : 1; 4431 } 4432 } 4433 position += off; 4434 return Math.abs(position); 4435 } 4436 4437 /** 4438 * Generate the number of discrete movement events appropriate for 4439 * the currently collected trackball movement. 4440 * 4441 * @return Returns the number of discrete movements, either positive 4442 * or negative, or 0 if there is not enough trackball movement yet 4443 * for a discrete movement. 4444 */ 4445 int generate() { 4446 int movement = 0; 4447 nonAccelMovement = 0; 4448 do { 4449 final int dir = position >= 0 ? 1 : -1; 4450 switch (step) { 4451 // If we are going to execute the first step, then we want 4452 // to do this as soon as possible instead of waiting for 4453 // a full movement, in order to make things look responsive. 4454 case 0: 4455 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4456 return movement; 4457 } 4458 movement += dir; 4459 nonAccelMovement += dir; 4460 step = 1; 4461 break; 4462 // If we have generated the first movement, then we need 4463 // to wait for the second complete trackball motion before 4464 // generating the second discrete movement. 4465 case 1: 4466 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4467 return movement; 4468 } 4469 movement += dir; 4470 nonAccelMovement += dir; 4471 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4472 step = 2; 4473 break; 4474 // After the first two, we generate discrete movements 4475 // consistently with the trackball, applying an acceleration 4476 // if the trackball is moving quickly. This is a simple 4477 // acceleration on top of what we already compute based 4478 // on how quickly the wheel is being turned, to apply 4479 // a longer increasing acceleration to continuous movement 4480 // in one direction. 4481 default: 4482 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4483 return movement; 4484 } 4485 movement += dir; 4486 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4487 float acc = acceleration; 4488 acc *= 1.1f; 4489 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4490 break; 4491 } 4492 } while (true); 4493 } 4494 } 4495 4496 /** 4497 * Creates dpad events from unhandled joystick movements. 4498 */ 4499 final class SyntheticJoystickHandler extends Handler { 4500 private final static String TAG = "SyntheticJoystickHandler"; 4501 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4502 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4503 4504 private int mLastXDirection; 4505 private int mLastYDirection; 4506 private int mLastXKeyCode; 4507 private int mLastYKeyCode; 4508 4509 public SyntheticJoystickHandler() { 4510 super(true); 4511 } 4512 4513 @Override 4514 public void handleMessage(Message msg) { 4515 switch (msg.what) { 4516 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4517 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4518 KeyEvent oldEvent = (KeyEvent)msg.obj; 4519 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4520 SystemClock.uptimeMillis(), 4521 oldEvent.getRepeatCount() + 1); 4522 if (mAttachInfo.mHasWindowFocus) { 4523 enqueueInputEvent(e); 4524 Message m = obtainMessage(msg.what, e); 4525 m.setAsynchronous(true); 4526 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4527 } 4528 } break; 4529 } 4530 } 4531 4532 public void process(MotionEvent event) { 4533 switch(event.getActionMasked()) { 4534 case MotionEvent.ACTION_CANCEL: 4535 cancel(event); 4536 break; 4537 case MotionEvent.ACTION_MOVE: 4538 update(event, true); 4539 break; 4540 default: 4541 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4542 } 4543 } 4544 4545 private void cancel(MotionEvent event) { 4546 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4547 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4548 update(event, false); 4549 } 4550 4551 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4552 final long time = event.getEventTime(); 4553 final int metaState = event.getMetaState(); 4554 final int deviceId = event.getDeviceId(); 4555 final int source = event.getSource(); 4556 4557 int xDirection = joystickAxisValueToDirection( 4558 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4559 if (xDirection == 0) { 4560 xDirection = joystickAxisValueToDirection(event.getX()); 4561 } 4562 4563 int yDirection = joystickAxisValueToDirection( 4564 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4565 if (yDirection == 0) { 4566 yDirection = joystickAxisValueToDirection(event.getY()); 4567 } 4568 4569 if (xDirection != mLastXDirection) { 4570 if (mLastXKeyCode != 0) { 4571 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4572 enqueueInputEvent(new KeyEvent(time, time, 4573 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4574 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4575 mLastXKeyCode = 0; 4576 } 4577 4578 mLastXDirection = xDirection; 4579 4580 if (xDirection != 0 && synthesizeNewKeys) { 4581 mLastXKeyCode = xDirection > 0 4582 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4583 final KeyEvent e = new KeyEvent(time, time, 4584 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4585 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4586 enqueueInputEvent(e); 4587 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4588 m.setAsynchronous(true); 4589 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4590 } 4591 } 4592 4593 if (yDirection != mLastYDirection) { 4594 if (mLastYKeyCode != 0) { 4595 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4596 enqueueInputEvent(new KeyEvent(time, time, 4597 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4598 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4599 mLastYKeyCode = 0; 4600 } 4601 4602 mLastYDirection = yDirection; 4603 4604 if (yDirection != 0 && synthesizeNewKeys) { 4605 mLastYKeyCode = yDirection > 0 4606 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4607 final KeyEvent e = new KeyEvent(time, time, 4608 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4609 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4610 enqueueInputEvent(e); 4611 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4612 m.setAsynchronous(true); 4613 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4614 } 4615 } 4616 } 4617 4618 private int joystickAxisValueToDirection(float value) { 4619 if (value >= 0.5f) { 4620 return 1; 4621 } else if (value <= -0.5f) { 4622 return -1; 4623 } else { 4624 return 0; 4625 } 4626 } 4627 } 4628 4629 /** 4630 * Creates dpad events from unhandled touch navigation movements. 4631 */ 4632 final class SyntheticTouchNavigationHandler extends Handler { 4633 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4634 private static final boolean LOCAL_DEBUG = false; 4635 4636 // Assumed nominal width and height in millimeters of a touch navigation pad, 4637 // if no resolution information is available from the input system. 4638 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4639 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4640 4641 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4642 4643 // The nominal distance traveled to move by one unit. 4644 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4645 4646 // Minimum and maximum fling velocity in ticks per second. 4647 // The minimum velocity should be set such that we perform enough ticks per 4648 // second that the fling appears to be fluid. For example, if we set the minimum 4649 // to 2 ticks per second, then there may be up to half a second delay between the next 4650 // to last and last ticks which is noticeably discrete and jerky. This value should 4651 // probably not be set to anything less than about 4. 4652 // If fling accuracy is a problem then consider tuning the tick distance instead. 4653 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4654 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4655 4656 // Fling velocity decay factor applied after each new key is emitted. 4657 // This parameter controls the deceleration and overall duration of the fling. 4658 // The fling stops automatically when its velocity drops below the minimum 4659 // fling velocity defined above. 4660 private static final float FLING_TICK_DECAY = 0.8f; 4661 4662 /* The input device that we are tracking. */ 4663 4664 private int mCurrentDeviceId = -1; 4665 private int mCurrentSource; 4666 private boolean mCurrentDeviceSupported; 4667 4668 /* Configuration for the current input device. */ 4669 4670 // The scaled tick distance. A movement of this amount should generally translate 4671 // into a single dpad event in a given direction. 4672 private float mConfigTickDistance; 4673 4674 // The minimum and maximum scaled fling velocity. 4675 private float mConfigMinFlingVelocity; 4676 private float mConfigMaxFlingVelocity; 4677 4678 /* Tracking state. */ 4679 4680 // The velocity tracker for detecting flings. 4681 private VelocityTracker mVelocityTracker; 4682 4683 // The active pointer id, or -1 if none. 4684 private int mActivePointerId = -1; 4685 4686 // Location where tracking started. 4687 private float mStartX; 4688 private float mStartY; 4689 4690 // Most recently observed position. 4691 private float mLastX; 4692 private float mLastY; 4693 4694 // Accumulated movement delta since the last direction key was sent. 4695 private float mAccumulatedX; 4696 private float mAccumulatedY; 4697 4698 // Set to true if any movement was delivered to the app. 4699 // Implies that tap slop was exceeded. 4700 private boolean mConsumedMovement; 4701 4702 // The most recently sent key down event. 4703 // The keycode remains set until the direction changes or a fling ends 4704 // so that repeated key events may be generated as required. 4705 private long mPendingKeyDownTime; 4706 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4707 private int mPendingKeyRepeatCount; 4708 private int mPendingKeyMetaState; 4709 4710 // The current fling velocity while a fling is in progress. 4711 private boolean mFlinging; 4712 private float mFlingVelocity; 4713 4714 public SyntheticTouchNavigationHandler() { 4715 super(true); 4716 } 4717 4718 public void process(MotionEvent event) { 4719 // Update the current device information. 4720 final long time = event.getEventTime(); 4721 final int deviceId = event.getDeviceId(); 4722 final int source = event.getSource(); 4723 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4724 finishKeys(time); 4725 finishTracking(time); 4726 mCurrentDeviceId = deviceId; 4727 mCurrentSource = source; 4728 mCurrentDeviceSupported = false; 4729 InputDevice device = event.getDevice(); 4730 if (device != null) { 4731 // In order to support an input device, we must know certain 4732 // characteristics about it, such as its size and resolution. 4733 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4734 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4735 if (xRange != null && yRange != null) { 4736 mCurrentDeviceSupported = true; 4737 4738 // Infer the resolution if it not actually known. 4739 float xRes = xRange.getResolution(); 4740 if (xRes <= 0) { 4741 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4742 } 4743 float yRes = yRange.getResolution(); 4744 if (yRes <= 0) { 4745 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4746 } 4747 float nominalRes = (xRes + yRes) * 0.5f; 4748 4749 // Precompute all of the configuration thresholds we will need. 4750 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4751 mConfigMinFlingVelocity = 4752 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4753 mConfigMaxFlingVelocity = 4754 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4755 4756 if (LOCAL_DEBUG) { 4757 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4758 + " (" + Integer.toHexString(mCurrentSource) + "): " 4759 + ", mConfigTickDistance=" + mConfigTickDistance 4760 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4761 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4762 } 4763 } 4764 } 4765 } 4766 if (!mCurrentDeviceSupported) { 4767 return; 4768 } 4769 4770 // Handle the event. 4771 final int action = event.getActionMasked(); 4772 switch (action) { 4773 case MotionEvent.ACTION_DOWN: { 4774 boolean caughtFling = mFlinging; 4775 finishKeys(time); 4776 finishTracking(time); 4777 mActivePointerId = event.getPointerId(0); 4778 mVelocityTracker = VelocityTracker.obtain(); 4779 mVelocityTracker.addMovement(event); 4780 mStartX = event.getX(); 4781 mStartY = event.getY(); 4782 mLastX = mStartX; 4783 mLastY = mStartY; 4784 mAccumulatedX = 0; 4785 mAccumulatedY = 0; 4786 4787 // If we caught a fling, then pretend that the tap slop has already 4788 // been exceeded to suppress taps whose only purpose is to stop the fling. 4789 mConsumedMovement = caughtFling; 4790 break; 4791 } 4792 4793 case MotionEvent.ACTION_MOVE: 4794 case MotionEvent.ACTION_UP: { 4795 if (mActivePointerId < 0) { 4796 break; 4797 } 4798 final int index = event.findPointerIndex(mActivePointerId); 4799 if (index < 0) { 4800 finishKeys(time); 4801 finishTracking(time); 4802 break; 4803 } 4804 4805 mVelocityTracker.addMovement(event); 4806 final float x = event.getX(index); 4807 final float y = event.getY(index); 4808 mAccumulatedX += x - mLastX; 4809 mAccumulatedY += y - mLastY; 4810 mLastX = x; 4811 mLastY = y; 4812 4813 // Consume any accumulated movement so far. 4814 final int metaState = event.getMetaState(); 4815 consumeAccumulatedMovement(time, metaState); 4816 4817 // Detect taps and flings. 4818 if (action == MotionEvent.ACTION_UP) { 4819 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4820 // It might be a fling. 4821 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4822 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4823 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4824 if (!startFling(time, vx, vy)) { 4825 finishKeys(time); 4826 } 4827 } 4828 finishTracking(time); 4829 } 4830 break; 4831 } 4832 4833 case MotionEvent.ACTION_CANCEL: { 4834 finishKeys(time); 4835 finishTracking(time); 4836 break; 4837 } 4838 } 4839 } 4840 4841 public void cancel(MotionEvent event) { 4842 if (mCurrentDeviceId == event.getDeviceId() 4843 && mCurrentSource == event.getSource()) { 4844 final long time = event.getEventTime(); 4845 finishKeys(time); 4846 finishTracking(time); 4847 } 4848 } 4849 4850 private void finishKeys(long time) { 4851 cancelFling(); 4852 sendKeyUp(time); 4853 } 4854 4855 private void finishTracking(long time) { 4856 if (mActivePointerId >= 0) { 4857 mActivePointerId = -1; 4858 mVelocityTracker.recycle(); 4859 mVelocityTracker = null; 4860 } 4861 } 4862 4863 private void consumeAccumulatedMovement(long time, int metaState) { 4864 final float absX = Math.abs(mAccumulatedX); 4865 final float absY = Math.abs(mAccumulatedY); 4866 if (absX >= absY) { 4867 if (absX >= mConfigTickDistance) { 4868 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4869 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4870 mAccumulatedY = 0; 4871 mConsumedMovement = true; 4872 } 4873 } else { 4874 if (absY >= mConfigTickDistance) { 4875 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4876 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4877 mAccumulatedX = 0; 4878 mConsumedMovement = true; 4879 } 4880 } 4881 } 4882 4883 private float consumeAccumulatedMovement(long time, int metaState, 4884 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4885 while (accumulator <= -mConfigTickDistance) { 4886 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4887 accumulator += mConfigTickDistance; 4888 } 4889 while (accumulator >= mConfigTickDistance) { 4890 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4891 accumulator -= mConfigTickDistance; 4892 } 4893 return accumulator; 4894 } 4895 4896 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4897 if (mPendingKeyCode != keyCode) { 4898 sendKeyUp(time); 4899 mPendingKeyDownTime = time; 4900 mPendingKeyCode = keyCode; 4901 mPendingKeyRepeatCount = 0; 4902 } else { 4903 mPendingKeyRepeatCount += 1; 4904 } 4905 mPendingKeyMetaState = metaState; 4906 4907 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4908 // but it doesn't quite make sense when simulating the events in this way. 4909 if (LOCAL_DEBUG) { 4910 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4911 + ", repeatCount=" + mPendingKeyRepeatCount 4912 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4913 } 4914 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4915 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4916 mPendingKeyMetaState, mCurrentDeviceId, 4917 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4918 } 4919 4920 private void sendKeyUp(long time) { 4921 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4922 if (LOCAL_DEBUG) { 4923 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4924 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4925 } 4926 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4927 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4928 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4929 mCurrentSource)); 4930 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4931 } 4932 } 4933 4934 private boolean startFling(long time, float vx, float vy) { 4935 if (LOCAL_DEBUG) { 4936 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4937 + ", min=" + mConfigMinFlingVelocity); 4938 } 4939 4940 // Flings must be oriented in the same direction as the preceding movements. 4941 switch (mPendingKeyCode) { 4942 case KeyEvent.KEYCODE_DPAD_LEFT: 4943 if (-vx >= mConfigMinFlingVelocity 4944 && Math.abs(vy) < mConfigMinFlingVelocity) { 4945 mFlingVelocity = -vx; 4946 break; 4947 } 4948 return false; 4949 4950 case KeyEvent.KEYCODE_DPAD_RIGHT: 4951 if (vx >= mConfigMinFlingVelocity 4952 && Math.abs(vy) < mConfigMinFlingVelocity) { 4953 mFlingVelocity = vx; 4954 break; 4955 } 4956 return false; 4957 4958 case KeyEvent.KEYCODE_DPAD_UP: 4959 if (-vy >= mConfigMinFlingVelocity 4960 && Math.abs(vx) < mConfigMinFlingVelocity) { 4961 mFlingVelocity = -vy; 4962 break; 4963 } 4964 return false; 4965 4966 case KeyEvent.KEYCODE_DPAD_DOWN: 4967 if (vy >= mConfigMinFlingVelocity 4968 && Math.abs(vx) < mConfigMinFlingVelocity) { 4969 mFlingVelocity = vy; 4970 break; 4971 } 4972 return false; 4973 } 4974 4975 // Post the first fling event. 4976 mFlinging = postFling(time); 4977 return mFlinging; 4978 } 4979 4980 private boolean postFling(long time) { 4981 // The idea here is to estimate the time when the pointer would have 4982 // traveled one tick distance unit given the current fling velocity. 4983 // This effect creates continuity of motion. 4984 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4985 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4986 postAtTime(mFlingRunnable, time + delay); 4987 if (LOCAL_DEBUG) { 4988 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4989 + mFlingVelocity + ", delay=" + delay 4990 + ", keyCode=" + mPendingKeyCode); 4991 } 4992 return true; 4993 } 4994 return false; 4995 } 4996 4997 private void cancelFling() { 4998 if (mFlinging) { 4999 removeCallbacks(mFlingRunnable); 5000 mFlinging = false; 5001 } 5002 } 5003 5004 private final Runnable mFlingRunnable = new Runnable() { 5005 @Override 5006 public void run() { 5007 final long time = SystemClock.uptimeMillis(); 5008 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5009 mFlingVelocity *= FLING_TICK_DECAY; 5010 if (!postFling(time)) { 5011 mFlinging = false; 5012 finishKeys(time); 5013 } 5014 } 5015 }; 5016 } 5017 5018 final class SyntheticKeyboardHandler { 5019 public void process(KeyEvent event) { 5020 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5021 return; 5022 } 5023 5024 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5025 final int keyCode = event.getKeyCode(); 5026 final int metaState = event.getMetaState(); 5027 5028 // Check for fallback actions specified by the key character map. 5029 KeyCharacterMap.FallbackAction fallbackAction = 5030 kcm.getFallbackAction(keyCode, metaState); 5031 if (fallbackAction != null) { 5032 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5033 KeyEvent fallbackEvent = KeyEvent.obtain( 5034 event.getDownTime(), event.getEventTime(), 5035 event.getAction(), fallbackAction.keyCode, 5036 event.getRepeatCount(), fallbackAction.metaState, 5037 event.getDeviceId(), event.getScanCode(), 5038 flags, event.getSource(), null); 5039 fallbackAction.recycle(); 5040 enqueueInputEvent(fallbackEvent); 5041 } 5042 } 5043 } 5044 5045 /** 5046 * Returns true if the key is used for keyboard navigation. 5047 * @param keyEvent The key event. 5048 * @return True if the key is used for keyboard navigation. 5049 */ 5050 private static boolean isNavigationKey(KeyEvent keyEvent) { 5051 switch (keyEvent.getKeyCode()) { 5052 case KeyEvent.KEYCODE_DPAD_LEFT: 5053 case KeyEvent.KEYCODE_DPAD_RIGHT: 5054 case KeyEvent.KEYCODE_DPAD_UP: 5055 case KeyEvent.KEYCODE_DPAD_DOWN: 5056 case KeyEvent.KEYCODE_DPAD_CENTER: 5057 case KeyEvent.KEYCODE_PAGE_UP: 5058 case KeyEvent.KEYCODE_PAGE_DOWN: 5059 case KeyEvent.KEYCODE_MOVE_HOME: 5060 case KeyEvent.KEYCODE_MOVE_END: 5061 case KeyEvent.KEYCODE_TAB: 5062 case KeyEvent.KEYCODE_SPACE: 5063 case KeyEvent.KEYCODE_ENTER: 5064 return true; 5065 } 5066 return false; 5067 } 5068 5069 /** 5070 * Returns true if the key is used for typing. 5071 * @param keyEvent The key event. 5072 * @return True if the key is used for typing. 5073 */ 5074 private static boolean isTypingKey(KeyEvent keyEvent) { 5075 return keyEvent.getUnicodeChar() > 0; 5076 } 5077 5078 /** 5079 * See if the key event means we should leave touch mode (and leave touch mode if so). 5080 * @param event The key event. 5081 * @return Whether this key event should be consumed (meaning the act of 5082 * leaving touch mode alone is considered the event). 5083 */ 5084 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5085 // Only relevant in touch mode. 5086 if (!mAttachInfo.mInTouchMode) { 5087 return false; 5088 } 5089 5090 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5091 final int action = event.getAction(); 5092 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5093 return false; 5094 } 5095 5096 // Don't leave touch mode if the IME told us not to. 5097 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5098 return false; 5099 } 5100 5101 // If the key can be used for keyboard navigation then leave touch mode 5102 // and select a focused view if needed (in ensureTouchMode). 5103 // When a new focused view is selected, we consume the navigation key because 5104 // navigation doesn't make much sense unless a view already has focus so 5105 // the key's purpose is to set focus. 5106 if (isNavigationKey(event)) { 5107 return ensureTouchMode(false); 5108 } 5109 5110 // If the key can be used for typing then leave touch mode 5111 // and select a focused view if needed (in ensureTouchMode). 5112 // Always allow the view to process the typing key. 5113 if (isTypingKey(event)) { 5114 ensureTouchMode(false); 5115 return false; 5116 } 5117 5118 return false; 5119 } 5120 5121 /* drag/drop */ 5122 void setLocalDragState(Object obj) { 5123 mLocalDragState = obj; 5124 } 5125 5126 private void handleDragEvent(DragEvent event) { 5127 // From the root, only drag start/end/location are dispatched. entered/exited 5128 // are determined and dispatched by the viewgroup hierarchy, who then report 5129 // that back here for ultimate reporting back to the framework. 5130 if (mView != null && mAdded) { 5131 final int what = event.mAction; 5132 5133 if (what == DragEvent.ACTION_DRAG_EXITED) { 5134 // A direct EXITED event means that the window manager knows we've just crossed 5135 // a window boundary, so the current drag target within this one must have 5136 // just been exited. Send it the usual notifications and then we're done 5137 // for now. 5138 mView.dispatchDragEvent(event); 5139 } else { 5140 // Cache the drag description when the operation starts, then fill it in 5141 // on subsequent calls as a convenience 5142 if (what == DragEvent.ACTION_DRAG_STARTED) { 5143 mCurrentDragView = null; // Start the current-recipient tracking 5144 mDragDescription = event.mClipDescription; 5145 } else { 5146 event.mClipDescription = mDragDescription; 5147 } 5148 5149 // For events with a [screen] location, translate into window coordinates 5150 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5151 mDragPoint.set(event.mX, event.mY); 5152 if (mTranslator != null) { 5153 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5154 } 5155 5156 if (mCurScrollY != 0) { 5157 mDragPoint.offset(0, mCurScrollY); 5158 } 5159 5160 event.mX = mDragPoint.x; 5161 event.mY = mDragPoint.y; 5162 } 5163 5164 // Remember who the current drag target is pre-dispatch 5165 final View prevDragView = mCurrentDragView; 5166 5167 // Now dispatch the drag/drop event 5168 boolean result = mView.dispatchDragEvent(event); 5169 5170 // If we changed apparent drag target, tell the OS about it 5171 if (prevDragView != mCurrentDragView) { 5172 try { 5173 if (prevDragView != null) { 5174 mWindowSession.dragRecipientExited(mWindow); 5175 } 5176 if (mCurrentDragView != null) { 5177 mWindowSession.dragRecipientEntered(mWindow); 5178 } 5179 } catch (RemoteException e) { 5180 Slog.e(TAG, "Unable to note drag target change"); 5181 } 5182 } 5183 5184 // Report the drop result when we're done 5185 if (what == DragEvent.ACTION_DROP) { 5186 mDragDescription = null; 5187 try { 5188 Log.i(TAG, "Reporting drop result: " + result); 5189 mWindowSession.reportDropResult(mWindow, result); 5190 } catch (RemoteException e) { 5191 Log.e(TAG, "Unable to report drop result"); 5192 } 5193 } 5194 5195 // When the drag operation ends, release any local state object 5196 // that may have been in use 5197 if (what == DragEvent.ACTION_DRAG_ENDED) { 5198 setLocalDragState(null); 5199 } 5200 } 5201 } 5202 event.recycle(); 5203 } 5204 5205 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5206 if (mSeq != args.seq) { 5207 // The sequence has changed, so we need to update our value and make 5208 // sure to do a traversal afterward so the window manager is given our 5209 // most recent data. 5210 mSeq = args.seq; 5211 mAttachInfo.mForceReportNewAttributes = true; 5212 scheduleTraversals(); 5213 } 5214 if (mView == null) return; 5215 if (args.localChanges != 0) { 5216 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5217 } 5218 5219 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5220 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5221 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5222 mView.dispatchSystemUiVisibilityChanged(visibility); 5223 } 5224 } 5225 5226 public void handleDispatchWindowAnimationStarted(int remainingFrameCount) { 5227 if (!mDrawDuringWindowsAnimating && remainingFrameCount != -1) { 5228 mRemainingFrameCount = remainingFrameCount; 5229 mWindowsAnimating = true; 5230 } 5231 } 5232 5233 public void handleDispatchWindowAnimationStopped() { 5234 if (mWindowsAnimating) { 5235 mWindowsAnimating = false; 5236 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5237 scheduleTraversals(); 5238 } 5239 } 5240 } 5241 5242 public void handleDispatchWindowShown() { 5243 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5244 } 5245 5246 public void getLastTouchPoint(Point outLocation) { 5247 outLocation.x = (int) mLastTouchPoint.x; 5248 outLocation.y = (int) mLastTouchPoint.y; 5249 } 5250 5251 public void setDragFocus(View newDragTarget) { 5252 if (mCurrentDragView != newDragTarget) { 5253 mCurrentDragView = newDragTarget; 5254 } 5255 } 5256 5257 private AudioManager getAudioManager() { 5258 if (mView == null) { 5259 throw new IllegalStateException("getAudioManager called when there is no mView"); 5260 } 5261 if (mAudioManager == null) { 5262 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5263 } 5264 return mAudioManager; 5265 } 5266 5267 public AccessibilityInteractionController getAccessibilityInteractionController() { 5268 if (mView == null) { 5269 throw new IllegalStateException("getAccessibilityInteractionController" 5270 + " called when there is no mView"); 5271 } 5272 if (mAccessibilityInteractionController == null) { 5273 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5274 } 5275 return mAccessibilityInteractionController; 5276 } 5277 5278 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5279 boolean insetsPending) throws RemoteException { 5280 5281 float appScale = mAttachInfo.mApplicationScale; 5282 boolean restore = false; 5283 if (params != null && mTranslator != null) { 5284 restore = true; 5285 params.backup(); 5286 mTranslator.translateWindowLayout(params); 5287 } 5288 if (params != null) { 5289 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5290 } 5291 mPendingConfiguration.seq = 0; 5292 //Log.d(TAG, ">>>>>> CALLING relayout"); 5293 if (params != null && mOrigWindowType != params.type) { 5294 // For compatibility with old apps, don't crash here. 5295 if (mTargetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5296 Slog.w(TAG, "Window type can not be changed after " 5297 + "the window is added; ignoring change of " + mView); 5298 params.type = mOrigWindowType; 5299 } 5300 } 5301 int relayoutResult = mWindowSession.relayout( 5302 mWindow, mSeq, params, 5303 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5304 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5305 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5306 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5307 mPendingStableInsets, mPendingOutsets, mPendingConfiguration, mSurface); 5308 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5309 if (restore) { 5310 params.restore(); 5311 } 5312 5313 if (mTranslator != null) { 5314 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5315 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5316 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5317 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5318 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5319 } 5320 return relayoutResult; 5321 } 5322 5323 /** 5324 * {@inheritDoc} 5325 */ 5326 @Override 5327 public void playSoundEffect(int effectId) { 5328 checkThread(); 5329 5330 try { 5331 final AudioManager audioManager = getAudioManager(); 5332 5333 switch (effectId) { 5334 case SoundEffectConstants.CLICK: 5335 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5336 return; 5337 case SoundEffectConstants.NAVIGATION_DOWN: 5338 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5339 return; 5340 case SoundEffectConstants.NAVIGATION_LEFT: 5341 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5342 return; 5343 case SoundEffectConstants.NAVIGATION_RIGHT: 5344 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5345 return; 5346 case SoundEffectConstants.NAVIGATION_UP: 5347 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5348 return; 5349 default: 5350 throw new IllegalArgumentException("unknown effect id " + effectId + 5351 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5352 } 5353 } catch (IllegalStateException e) { 5354 // Exception thrown by getAudioManager() when mView is null 5355 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5356 e.printStackTrace(); 5357 } 5358 } 5359 5360 /** 5361 * {@inheritDoc} 5362 */ 5363 @Override 5364 public boolean performHapticFeedback(int effectId, boolean always) { 5365 try { 5366 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5367 } catch (RemoteException e) { 5368 return false; 5369 } 5370 } 5371 5372 /** 5373 * {@inheritDoc} 5374 */ 5375 @Override 5376 public View focusSearch(View focused, int direction) { 5377 checkThread(); 5378 if (!(mView instanceof ViewGroup)) { 5379 return null; 5380 } 5381 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5382 } 5383 5384 public void debug() { 5385 mView.debug(); 5386 } 5387 5388 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5389 String innerPrefix = prefix + " "; 5390 writer.print(prefix); writer.println("ViewRoot:"); 5391 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5392 writer.print(" mRemoved="); writer.println(mRemoved); 5393 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5394 writer.println(mConsumeBatchedInputScheduled); 5395 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5396 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5397 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5398 writer.println(mPendingInputEventCount); 5399 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5400 writer.println(mProcessInputEventsScheduled); 5401 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5402 writer.print(mTraversalScheduled); 5403 if (mTraversalScheduled) { 5404 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5405 } else { 5406 writer.println(); 5407 } 5408 mFirstInputStage.dump(innerPrefix, writer); 5409 5410 mChoreographer.dump(prefix, writer); 5411 5412 writer.print(prefix); writer.println("View Hierarchy:"); 5413 dumpViewHierarchy(innerPrefix, writer, mView); 5414 } 5415 5416 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5417 writer.print(prefix); 5418 if (view == null) { 5419 writer.println("null"); 5420 return; 5421 } 5422 writer.println(view.toString()); 5423 if (!(view instanceof ViewGroup)) { 5424 return; 5425 } 5426 ViewGroup grp = (ViewGroup)view; 5427 final int N = grp.getChildCount(); 5428 if (N <= 0) { 5429 return; 5430 } 5431 prefix = prefix + " "; 5432 for (int i=0; i<N; i++) { 5433 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5434 } 5435 } 5436 5437 public void dumpGfxInfo(int[] info) { 5438 info[0] = info[1] = 0; 5439 if (mView != null) { 5440 getGfxInfo(mView, info); 5441 } 5442 } 5443 5444 private static void getGfxInfo(View view, int[] info) { 5445 RenderNode renderNode = view.mRenderNode; 5446 info[0]++; 5447 if (renderNode != null) { 5448 info[1] += renderNode.getDebugSize(); 5449 } 5450 5451 if (view instanceof ViewGroup) { 5452 ViewGroup group = (ViewGroup) view; 5453 5454 int count = group.getChildCount(); 5455 for (int i = 0; i < count; i++) { 5456 getGfxInfo(group.getChildAt(i), info); 5457 } 5458 } 5459 } 5460 5461 /** 5462 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5463 * @return True, request has been queued. False, request has been completed. 5464 */ 5465 boolean die(boolean immediate) { 5466 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5467 // done by dispatchDetachedFromWindow will cause havoc on return. 5468 if (immediate && !mIsInTraversal) { 5469 doDie(); 5470 return false; 5471 } 5472 5473 if (!mIsDrawing) { 5474 destroyHardwareRenderer(); 5475 } else { 5476 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5477 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5478 } 5479 mHandler.sendEmptyMessage(MSG_DIE); 5480 return true; 5481 } 5482 5483 void doDie() { 5484 checkThread(); 5485 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5486 synchronized (this) { 5487 if (mRemoved) { 5488 return; 5489 } 5490 mRemoved = true; 5491 if (mAdded) { 5492 dispatchDetachedFromWindow(); 5493 } 5494 5495 if (mAdded && !mFirst) { 5496 destroyHardwareRenderer(); 5497 5498 if (mView != null) { 5499 int viewVisibility = mView.getVisibility(); 5500 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5501 if (mWindowAttributesChanged || viewVisibilityChanged) { 5502 // If layout params have been changed, first give them 5503 // to the window manager to make sure it has the correct 5504 // animation info. 5505 try { 5506 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5507 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5508 mWindowSession.finishDrawing(mWindow); 5509 } 5510 } catch (RemoteException e) { 5511 } 5512 } 5513 5514 mSurface.release(); 5515 } 5516 } 5517 5518 mAdded = false; 5519 } 5520 WindowManagerGlobal.getInstance().doRemoveView(this); 5521 } 5522 5523 public void requestUpdateConfiguration(Configuration config) { 5524 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5525 mHandler.sendMessage(msg); 5526 } 5527 5528 public void loadSystemProperties() { 5529 mHandler.post(new Runnable() { 5530 @Override 5531 public void run() { 5532 // Profiling 5533 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5534 profileRendering(mAttachInfo.mHasWindowFocus); 5535 5536 // Hardware rendering 5537 if (mAttachInfo.mHardwareRenderer != null) { 5538 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5539 invalidate(); 5540 } 5541 } 5542 5543 // Layout debugging 5544 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5545 if (layout != mAttachInfo.mDebugLayout) { 5546 mAttachInfo.mDebugLayout = layout; 5547 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5548 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5549 } 5550 } 5551 } 5552 }); 5553 } 5554 5555 private void destroyHardwareRenderer() { 5556 HardwareRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5557 5558 if (hardwareRenderer != null) { 5559 if (mView != null) { 5560 hardwareRenderer.destroyHardwareResources(mView); 5561 } 5562 hardwareRenderer.destroy(); 5563 hardwareRenderer.setRequested(false); 5564 5565 mAttachInfo.mHardwareRenderer = null; 5566 mAttachInfo.mHardwareAccelerated = false; 5567 } 5568 } 5569 5570 public void dispatchFinishInputConnection(InputConnection connection) { 5571 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5572 mHandler.sendMessage(msg); 5573 } 5574 5575 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5576 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 5577 Configuration newConfig) { 5578 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5579 + " contentInsets=" + contentInsets.toShortString() 5580 + " visibleInsets=" + visibleInsets.toShortString() 5581 + " reportDraw=" + reportDraw); 5582 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5583 if (mTranslator != null) { 5584 mTranslator.translateRectInScreenToAppWindow(frame); 5585 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5586 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5587 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5588 } 5589 SomeArgs args = SomeArgs.obtain(); 5590 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5591 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5592 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5593 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5594 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5595 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5596 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5597 args.arg7 = sameProcessCall ? new Rect(outsets) : outsets; 5598 msg.obj = args; 5599 mHandler.sendMessage(msg); 5600 } 5601 5602 public void dispatchMoved(int newX, int newY) { 5603 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5604 if (mTranslator != null) { 5605 PointF point = new PointF(newX, newY); 5606 mTranslator.translatePointInScreenToAppWindow(point); 5607 newX = (int) (point.x + 0.5); 5608 newY = (int) (point.y + 0.5); 5609 } 5610 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5611 mHandler.sendMessage(msg); 5612 } 5613 5614 /** 5615 * Represents a pending input event that is waiting in a queue. 5616 * 5617 * Input events are processed in serial order by the timestamp specified by 5618 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5619 * one input event to the application at a time and waits for the application 5620 * to finish handling it before delivering the next one. 5621 * 5622 * However, because the application or IME can synthesize and inject multiple 5623 * key events at a time without going through the input dispatcher, we end up 5624 * needing a queue on the application's side. 5625 */ 5626 private static final class QueuedInputEvent { 5627 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5628 public static final int FLAG_DEFERRED = 1 << 1; 5629 public static final int FLAG_FINISHED = 1 << 2; 5630 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5631 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5632 public static final int FLAG_UNHANDLED = 1 << 5; 5633 5634 public QueuedInputEvent mNext; 5635 5636 public InputEvent mEvent; 5637 public InputEventReceiver mReceiver; 5638 public int mFlags; 5639 5640 public boolean shouldSkipIme() { 5641 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5642 return true; 5643 } 5644 return mEvent instanceof MotionEvent 5645 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5646 } 5647 5648 public boolean shouldSendToSynthesizer() { 5649 if ((mFlags & FLAG_UNHANDLED) != 0) { 5650 return true; 5651 } 5652 5653 return false; 5654 } 5655 5656 @Override 5657 public String toString() { 5658 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5659 boolean hasPrevious = false; 5660 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5661 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5662 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5663 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5664 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5665 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5666 if (!hasPrevious) { 5667 sb.append("0"); 5668 } 5669 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5670 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5671 sb.append(", mEvent=" + mEvent + "}"); 5672 return sb.toString(); 5673 } 5674 5675 private boolean flagToString(String name, int flag, 5676 boolean hasPrevious, StringBuilder sb) { 5677 if ((mFlags & flag) != 0) { 5678 if (hasPrevious) { 5679 sb.append("|"); 5680 } 5681 sb.append(name); 5682 return true; 5683 } 5684 return hasPrevious; 5685 } 5686 } 5687 5688 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5689 InputEventReceiver receiver, int flags) { 5690 QueuedInputEvent q = mQueuedInputEventPool; 5691 if (q != null) { 5692 mQueuedInputEventPoolSize -= 1; 5693 mQueuedInputEventPool = q.mNext; 5694 q.mNext = null; 5695 } else { 5696 q = new QueuedInputEvent(); 5697 } 5698 5699 q.mEvent = event; 5700 q.mReceiver = receiver; 5701 q.mFlags = flags; 5702 return q; 5703 } 5704 5705 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5706 q.mEvent = null; 5707 q.mReceiver = null; 5708 5709 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5710 mQueuedInputEventPoolSize += 1; 5711 q.mNext = mQueuedInputEventPool; 5712 mQueuedInputEventPool = q; 5713 } 5714 } 5715 5716 void enqueueInputEvent(InputEvent event) { 5717 enqueueInputEvent(event, null, 0, false); 5718 } 5719 5720 void enqueueInputEvent(InputEvent event, 5721 InputEventReceiver receiver, int flags, boolean processImmediately) { 5722 adjustInputEventForCompatibility(event); 5723 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5724 5725 // Always enqueue the input event in order, regardless of its time stamp. 5726 // We do this because the application or the IME may inject key events 5727 // in response to touch events and we want to ensure that the injected keys 5728 // are processed in the order they were received and we cannot trust that 5729 // the time stamp of injected events are monotonic. 5730 QueuedInputEvent last = mPendingInputEventTail; 5731 if (last == null) { 5732 mPendingInputEventHead = q; 5733 mPendingInputEventTail = q; 5734 } else { 5735 last.mNext = q; 5736 mPendingInputEventTail = q; 5737 } 5738 mPendingInputEventCount += 1; 5739 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5740 mPendingInputEventCount); 5741 5742 if (processImmediately) { 5743 doProcessInputEvents(); 5744 } else { 5745 scheduleProcessInputEvents(); 5746 } 5747 } 5748 5749 private void scheduleProcessInputEvents() { 5750 if (!mProcessInputEventsScheduled) { 5751 mProcessInputEventsScheduled = true; 5752 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5753 msg.setAsynchronous(true); 5754 mHandler.sendMessage(msg); 5755 } 5756 } 5757 5758 void doProcessInputEvents() { 5759 // Deliver all pending input events in the queue. 5760 while (mPendingInputEventHead != null) { 5761 QueuedInputEvent q = mPendingInputEventHead; 5762 mPendingInputEventHead = q.mNext; 5763 if (mPendingInputEventHead == null) { 5764 mPendingInputEventTail = null; 5765 } 5766 q.mNext = null; 5767 5768 mPendingInputEventCount -= 1; 5769 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5770 mPendingInputEventCount); 5771 5772 long eventTime = q.mEvent.getEventTimeNano(); 5773 long oldestEventTime = eventTime; 5774 if (q.mEvent instanceof MotionEvent) { 5775 MotionEvent me = (MotionEvent)q.mEvent; 5776 if (me.getHistorySize() > 0) { 5777 oldestEventTime = me.getHistoricalEventTimeNano(0); 5778 } 5779 } 5780 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 5781 5782 deliverInputEvent(q); 5783 } 5784 5785 // We are done processing all input events that we can process right now 5786 // so we can clear the pending flag immediately. 5787 if (mProcessInputEventsScheduled) { 5788 mProcessInputEventsScheduled = false; 5789 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5790 } 5791 } 5792 5793 private void deliverInputEvent(QueuedInputEvent q) { 5794 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5795 q.mEvent.getSequenceNumber()); 5796 if (mInputEventConsistencyVerifier != null) { 5797 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5798 } 5799 5800 InputStage stage; 5801 if (q.shouldSendToSynthesizer()) { 5802 stage = mSyntheticInputStage; 5803 } else { 5804 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5805 } 5806 5807 if (stage != null) { 5808 stage.deliver(q); 5809 } else { 5810 finishInputEvent(q); 5811 } 5812 } 5813 5814 private void finishInputEvent(QueuedInputEvent q) { 5815 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5816 q.mEvent.getSequenceNumber()); 5817 5818 if (q.mReceiver != null) { 5819 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5820 q.mReceiver.finishInputEvent(q.mEvent, handled); 5821 } else { 5822 q.mEvent.recycleIfNeededAfterDispatch(); 5823 } 5824 5825 recycleQueuedInputEvent(q); 5826 } 5827 5828 private void adjustInputEventForCompatibility(InputEvent e) { 5829 if (mTargetSdkVersion < Build.VERSION_CODES.MNC && e instanceof MotionEvent) { 5830 MotionEvent motion = (MotionEvent) e; 5831 final int mask = 5832 MotionEvent.BUTTON_STYLUS_PRIMARY | MotionEvent.BUTTON_STYLUS_SECONDARY; 5833 final int buttonState = motion.getButtonState(); 5834 final int compatButtonState = (buttonState & mask) >> 4; 5835 if (compatButtonState != 0) { 5836 motion.setButtonState(buttonState | compatButtonState); 5837 } 5838 } 5839 } 5840 5841 static boolean isTerminalInputEvent(InputEvent event) { 5842 if (event instanceof KeyEvent) { 5843 final KeyEvent keyEvent = (KeyEvent)event; 5844 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5845 } else { 5846 final MotionEvent motionEvent = (MotionEvent)event; 5847 final int action = motionEvent.getAction(); 5848 return action == MotionEvent.ACTION_UP 5849 || action == MotionEvent.ACTION_CANCEL 5850 || action == MotionEvent.ACTION_HOVER_EXIT; 5851 } 5852 } 5853 5854 void scheduleConsumeBatchedInput() { 5855 if (!mConsumeBatchedInputScheduled) { 5856 mConsumeBatchedInputScheduled = true; 5857 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5858 mConsumedBatchedInputRunnable, null); 5859 } 5860 } 5861 5862 void unscheduleConsumeBatchedInput() { 5863 if (mConsumeBatchedInputScheduled) { 5864 mConsumeBatchedInputScheduled = false; 5865 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5866 mConsumedBatchedInputRunnable, null); 5867 } 5868 } 5869 5870 void scheduleConsumeBatchedInputImmediately() { 5871 if (!mConsumeBatchedInputImmediatelyScheduled) { 5872 unscheduleConsumeBatchedInput(); 5873 mConsumeBatchedInputImmediatelyScheduled = true; 5874 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 5875 } 5876 } 5877 5878 void doConsumeBatchedInput(long frameTimeNanos) { 5879 if (mConsumeBatchedInputScheduled) { 5880 mConsumeBatchedInputScheduled = false; 5881 if (mInputEventReceiver != null) { 5882 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 5883 && frameTimeNanos != -1) { 5884 // If we consumed a batch here, we want to go ahead and schedule the 5885 // consumption of batched input events on the next frame. Otherwise, we would 5886 // wait until we have more input events pending and might get starved by other 5887 // things occurring in the process. If the frame time is -1, however, then 5888 // we're in a non-batching mode, so there's no need to schedule this. 5889 scheduleConsumeBatchedInput(); 5890 } 5891 } 5892 doProcessInputEvents(); 5893 } 5894 } 5895 5896 final class TraversalRunnable implements Runnable { 5897 @Override 5898 public void run() { 5899 doTraversal(); 5900 } 5901 } 5902 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5903 5904 final class WindowInputEventReceiver extends InputEventReceiver { 5905 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5906 super(inputChannel, looper); 5907 } 5908 5909 @Override 5910 public void onInputEvent(InputEvent event) { 5911 enqueueInputEvent(event, this, 0, true); 5912 } 5913 5914 @Override 5915 public void onBatchedInputEventPending() { 5916 if (mUnbufferedInputDispatch) { 5917 super.onBatchedInputEventPending(); 5918 } else { 5919 scheduleConsumeBatchedInput(); 5920 } 5921 } 5922 5923 @Override 5924 public void dispose() { 5925 unscheduleConsumeBatchedInput(); 5926 super.dispose(); 5927 } 5928 } 5929 WindowInputEventReceiver mInputEventReceiver; 5930 5931 final class ConsumeBatchedInputRunnable implements Runnable { 5932 @Override 5933 public void run() { 5934 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5935 } 5936 } 5937 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5938 new ConsumeBatchedInputRunnable(); 5939 boolean mConsumeBatchedInputScheduled; 5940 5941 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 5942 @Override 5943 public void run() { 5944 doConsumeBatchedInput(-1); 5945 } 5946 } 5947 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 5948 new ConsumeBatchedInputImmediatelyRunnable(); 5949 boolean mConsumeBatchedInputImmediatelyScheduled; 5950 5951 final class InvalidateOnAnimationRunnable implements Runnable { 5952 private boolean mPosted; 5953 private final ArrayList<View> mViews = new ArrayList<View>(); 5954 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5955 new ArrayList<AttachInfo.InvalidateInfo>(); 5956 private View[] mTempViews; 5957 private AttachInfo.InvalidateInfo[] mTempViewRects; 5958 5959 public void addView(View view) { 5960 synchronized (this) { 5961 mViews.add(view); 5962 postIfNeededLocked(); 5963 } 5964 } 5965 5966 public void addViewRect(AttachInfo.InvalidateInfo info) { 5967 synchronized (this) { 5968 mViewRects.add(info); 5969 postIfNeededLocked(); 5970 } 5971 } 5972 5973 public void removeView(View view) { 5974 synchronized (this) { 5975 mViews.remove(view); 5976 5977 for (int i = mViewRects.size(); i-- > 0; ) { 5978 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5979 if (info.target == view) { 5980 mViewRects.remove(i); 5981 info.recycle(); 5982 } 5983 } 5984 5985 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5986 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5987 mPosted = false; 5988 } 5989 } 5990 } 5991 5992 @Override 5993 public void run() { 5994 final int viewCount; 5995 final int viewRectCount; 5996 synchronized (this) { 5997 mPosted = false; 5998 5999 viewCount = mViews.size(); 6000 if (viewCount != 0) { 6001 mTempViews = mViews.toArray(mTempViews != null 6002 ? mTempViews : new View[viewCount]); 6003 mViews.clear(); 6004 } 6005 6006 viewRectCount = mViewRects.size(); 6007 if (viewRectCount != 0) { 6008 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6009 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6010 mViewRects.clear(); 6011 } 6012 } 6013 6014 for (int i = 0; i < viewCount; i++) { 6015 mTempViews[i].invalidate(); 6016 mTempViews[i] = null; 6017 } 6018 6019 for (int i = 0; i < viewRectCount; i++) { 6020 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6021 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6022 info.recycle(); 6023 } 6024 } 6025 6026 private void postIfNeededLocked() { 6027 if (!mPosted) { 6028 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6029 mPosted = true; 6030 } 6031 } 6032 } 6033 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6034 new InvalidateOnAnimationRunnable(); 6035 6036 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6037 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6038 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6039 } 6040 6041 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6042 long delayMilliseconds) { 6043 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6044 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6045 } 6046 6047 public void dispatchInvalidateOnAnimation(View view) { 6048 mInvalidateOnAnimationRunnable.addView(view); 6049 } 6050 6051 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6052 mInvalidateOnAnimationRunnable.addViewRect(info); 6053 } 6054 6055 public void cancelInvalidate(View view) { 6056 mHandler.removeMessages(MSG_INVALIDATE, view); 6057 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6058 // them to the pool 6059 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6060 mInvalidateOnAnimationRunnable.removeView(view); 6061 } 6062 6063 public void dispatchInputEvent(InputEvent event) { 6064 dispatchInputEvent(event, null); 6065 } 6066 6067 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6068 SomeArgs args = SomeArgs.obtain(); 6069 args.arg1 = event; 6070 args.arg2 = receiver; 6071 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6072 msg.setAsynchronous(true); 6073 mHandler.sendMessage(msg); 6074 } 6075 6076 public void synthesizeInputEvent(InputEvent event) { 6077 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6078 msg.setAsynchronous(true); 6079 mHandler.sendMessage(msg); 6080 } 6081 6082 public void dispatchKeyFromIme(KeyEvent event) { 6083 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6084 msg.setAsynchronous(true); 6085 mHandler.sendMessage(msg); 6086 } 6087 6088 /** 6089 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6090 * 6091 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6092 * passes in. 6093 */ 6094 public void dispatchUnhandledInputEvent(InputEvent event) { 6095 if (event instanceof MotionEvent) { 6096 event = MotionEvent.obtain((MotionEvent) event); 6097 } 6098 synthesizeInputEvent(event); 6099 } 6100 6101 public void dispatchAppVisibility(boolean visible) { 6102 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6103 msg.arg1 = visible ? 1 : 0; 6104 mHandler.sendMessage(msg); 6105 } 6106 6107 public void dispatchGetNewSurface() { 6108 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6109 mHandler.sendMessage(msg); 6110 } 6111 6112 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6113 Message msg = Message.obtain(); 6114 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6115 msg.arg1 = hasFocus ? 1 : 0; 6116 msg.arg2 = inTouchMode ? 1 : 0; 6117 mHandler.sendMessage(msg); 6118 } 6119 6120 public void dispatchWindowShown() { 6121 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6122 } 6123 6124 public void dispatchCloseSystemDialogs(String reason) { 6125 Message msg = Message.obtain(); 6126 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6127 msg.obj = reason; 6128 mHandler.sendMessage(msg); 6129 } 6130 6131 public void dispatchDragEvent(DragEvent event) { 6132 final int what; 6133 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6134 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6135 mHandler.removeMessages(what); 6136 } else { 6137 what = MSG_DISPATCH_DRAG_EVENT; 6138 } 6139 Message msg = mHandler.obtainMessage(what, event); 6140 mHandler.sendMessage(msg); 6141 } 6142 6143 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6144 int localValue, int localChanges) { 6145 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6146 args.seq = seq; 6147 args.globalVisibility = globalVisibility; 6148 args.localValue = localValue; 6149 args.localChanges = localChanges; 6150 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6151 } 6152 6153 public void dispatchWindowAnimationStarted(int remainingFrameCount) { 6154 mHandler.obtainMessage(MSG_DISPATCH_WINDOW_ANIMATION_STARTED, 6155 remainingFrameCount, 0 /* unused */).sendToTarget(); 6156 } 6157 6158 public void dispatchWindowAnimationStopped() { 6159 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_ANIMATION_STOPPED); 6160 } 6161 6162 public void dispatchCheckFocus() { 6163 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6164 // This will result in a call to checkFocus() below. 6165 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6166 } 6167 } 6168 6169 /** 6170 * Post a callback to send a 6171 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6172 * This event is send at most once every 6173 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6174 */ 6175 private void postSendWindowContentChangedCallback(View source, int changeType) { 6176 if (mSendWindowContentChangedAccessibilityEvent == null) { 6177 mSendWindowContentChangedAccessibilityEvent = 6178 new SendWindowContentChangedAccessibilityEvent(); 6179 } 6180 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6181 } 6182 6183 /** 6184 * Remove a posted callback to send a 6185 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6186 */ 6187 private void removeSendWindowContentChangedCallback() { 6188 if (mSendWindowContentChangedAccessibilityEvent != null) { 6189 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6190 } 6191 } 6192 6193 @Override 6194 public boolean showContextMenuForChild(View originalView) { 6195 return false; 6196 } 6197 6198 @Override 6199 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6200 return null; 6201 } 6202 6203 @Override 6204 public ActionMode startActionModeForChild( 6205 View originalView, ActionMode.Callback callback, int type) { 6206 return null; 6207 } 6208 6209 @Override 6210 public void createContextMenu(ContextMenu menu) { 6211 } 6212 6213 @Override 6214 public void childDrawableStateChanged(View child) { 6215 } 6216 6217 @Override 6218 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6219 if (mView == null || mStopped || mPausedForTransition) { 6220 return false; 6221 } 6222 // Intercept accessibility focus events fired by virtual nodes to keep 6223 // track of accessibility focus position in such nodes. 6224 final int eventType = event.getEventType(); 6225 switch (eventType) { 6226 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6227 final long sourceNodeId = event.getSourceNodeId(); 6228 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6229 sourceNodeId); 6230 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6231 if (source != null) { 6232 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6233 if (provider != null) { 6234 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6235 sourceNodeId); 6236 final AccessibilityNodeInfo node; 6237 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6238 node = provider.createAccessibilityNodeInfo( 6239 AccessibilityNodeProvider.HOST_VIEW_ID); 6240 } else { 6241 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6242 } 6243 setAccessibilityFocus(source, node); 6244 } 6245 } 6246 } break; 6247 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6248 final long sourceNodeId = event.getSourceNodeId(); 6249 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6250 sourceNodeId); 6251 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6252 if (source != null) { 6253 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6254 if (provider != null) { 6255 setAccessibilityFocus(null, null); 6256 } 6257 } 6258 } break; 6259 6260 6261 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6262 handleWindowContentChangedEvent(event); 6263 } break; 6264 } 6265 mAccessibilityManager.sendAccessibilityEvent(event); 6266 return true; 6267 } 6268 6269 /** 6270 * Updates the focused virtual view, when necessary, in response to a 6271 * content changed event. 6272 * <p> 6273 * This is necessary to get updated bounds after a position change. 6274 * 6275 * @param event an accessibility event of type 6276 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} 6277 */ 6278 private void handleWindowContentChangedEvent(AccessibilityEvent event) { 6279 final View focusedHost = mAccessibilityFocusedHost; 6280 if (focusedHost == null || mAccessibilityFocusedVirtualView == null) { 6281 // No virtual view focused, nothing to do here. 6282 return; 6283 } 6284 6285 final AccessibilityNodeProvider provider = focusedHost.getAccessibilityNodeProvider(); 6286 if (provider == null) { 6287 // Error state: virtual view with no provider. Clear focus. 6288 mAccessibilityFocusedHost = null; 6289 mAccessibilityFocusedVirtualView = null; 6290 focusedHost.clearAccessibilityFocusNoCallbacks(); 6291 return; 6292 } 6293 6294 // We only care about change types that may affect the bounds of the 6295 // focused virtual view. 6296 final int changes = event.getContentChangeTypes(); 6297 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) == 0 6298 && changes != AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6299 return; 6300 } 6301 6302 final long eventSourceNodeId = event.getSourceNodeId(); 6303 final int changedViewId = AccessibilityNodeInfo.getAccessibilityViewId(eventSourceNodeId); 6304 6305 // Search up the tree for subtree containment. 6306 boolean hostInSubtree = false; 6307 View root = mAccessibilityFocusedHost; 6308 while (root != null && !hostInSubtree) { 6309 if (changedViewId == root.getAccessibilityViewId()) { 6310 hostInSubtree = true; 6311 } else { 6312 final ViewParent parent = root.getParent(); 6313 if (parent instanceof View) { 6314 root = (View) parent; 6315 } else { 6316 root = null; 6317 } 6318 } 6319 } 6320 6321 // We care only about changes in subtrees containing the host view. 6322 if (!hostInSubtree) { 6323 return; 6324 } 6325 6326 final long focusedSourceNodeId = mAccessibilityFocusedVirtualView.getSourceNodeId(); 6327 int focusedChildId = AccessibilityNodeInfo.getVirtualDescendantId(focusedSourceNodeId); 6328 if (focusedChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6329 // TODO: Should we clear the focused virtual view? 6330 focusedChildId = AccessibilityNodeProvider.HOST_VIEW_ID; 6331 } 6332 6333 // Refresh the node for the focused virtual view. 6334 final Rect oldBounds = mTempRect; 6335 mAccessibilityFocusedVirtualView.getBoundsInScreen(oldBounds); 6336 mAccessibilityFocusedVirtualView = provider.createAccessibilityNodeInfo(focusedChildId); 6337 if (mAccessibilityFocusedVirtualView == null) { 6338 // Error state: The node no longer exists. Clear focus. 6339 mAccessibilityFocusedHost = null; 6340 focusedHost.clearAccessibilityFocusNoCallbacks(); 6341 6342 // This will probably fail, but try to keep the provider's internal 6343 // state consistent by clearing focus. 6344 provider.performAction(focusedChildId, 6345 AccessibilityAction.ACTION_CLEAR_ACCESSIBILITY_FOCUS.getId(), null); 6346 invalidateRectOnScreen(oldBounds); 6347 } else { 6348 // The node was refreshed, invalidate bounds if necessary. 6349 final Rect newBounds = mAccessibilityFocusedVirtualView.getBoundsInScreen(); 6350 if (!oldBounds.equals(newBounds)) { 6351 oldBounds.union(newBounds); 6352 invalidateRectOnScreen(oldBounds); 6353 } 6354 } 6355 } 6356 6357 @Override 6358 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6359 postSendWindowContentChangedCallback(source, changeType); 6360 } 6361 6362 @Override 6363 public boolean canResolveLayoutDirection() { 6364 return true; 6365 } 6366 6367 @Override 6368 public boolean isLayoutDirectionResolved() { 6369 return true; 6370 } 6371 6372 @Override 6373 public int getLayoutDirection() { 6374 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6375 } 6376 6377 @Override 6378 public boolean canResolveTextDirection() { 6379 return true; 6380 } 6381 6382 @Override 6383 public boolean isTextDirectionResolved() { 6384 return true; 6385 } 6386 6387 @Override 6388 public int getTextDirection() { 6389 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6390 } 6391 6392 @Override 6393 public boolean canResolveTextAlignment() { 6394 return true; 6395 } 6396 6397 @Override 6398 public boolean isTextAlignmentResolved() { 6399 return true; 6400 } 6401 6402 @Override 6403 public int getTextAlignment() { 6404 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6405 } 6406 6407 private View getCommonPredecessor(View first, View second) { 6408 if (mTempHashSet == null) { 6409 mTempHashSet = new HashSet<View>(); 6410 } 6411 HashSet<View> seen = mTempHashSet; 6412 seen.clear(); 6413 View firstCurrent = first; 6414 while (firstCurrent != null) { 6415 seen.add(firstCurrent); 6416 ViewParent firstCurrentParent = firstCurrent.mParent; 6417 if (firstCurrentParent instanceof View) { 6418 firstCurrent = (View) firstCurrentParent; 6419 } else { 6420 firstCurrent = null; 6421 } 6422 } 6423 View secondCurrent = second; 6424 while (secondCurrent != null) { 6425 if (seen.contains(secondCurrent)) { 6426 seen.clear(); 6427 return secondCurrent; 6428 } 6429 ViewParent secondCurrentParent = secondCurrent.mParent; 6430 if (secondCurrentParent instanceof View) { 6431 secondCurrent = (View) secondCurrentParent; 6432 } else { 6433 secondCurrent = null; 6434 } 6435 } 6436 seen.clear(); 6437 return null; 6438 } 6439 6440 void checkThread() { 6441 if (mThread != Thread.currentThread()) { 6442 throw new CalledFromWrongThreadException( 6443 "Only the original thread that created a view hierarchy can touch its views."); 6444 } 6445 } 6446 6447 @Override 6448 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6449 // ViewAncestor never intercepts touch event, so this can be a no-op 6450 } 6451 6452 @Override 6453 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6454 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6455 if (rectangle != null) { 6456 mTempRect.set(rectangle); 6457 mTempRect.offset(0, -mCurScrollY); 6458 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6459 try { 6460 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6461 } catch (RemoteException re) { 6462 /* ignore */ 6463 } 6464 } 6465 return scrolled; 6466 } 6467 6468 @Override 6469 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6470 // Do nothing. 6471 } 6472 6473 @Override 6474 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6475 return false; 6476 } 6477 6478 @Override 6479 public void onStopNestedScroll(View target) { 6480 } 6481 6482 @Override 6483 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6484 } 6485 6486 @Override 6487 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6488 int dxUnconsumed, int dyUnconsumed) { 6489 } 6490 6491 @Override 6492 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6493 } 6494 6495 @Override 6496 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6497 return false; 6498 } 6499 6500 @Override 6501 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6502 return false; 6503 } 6504 6505 @Override 6506 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6507 return false; 6508 } 6509 6510 void changeCanvasOpacity(boolean opaque) { 6511 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6512 if (mAttachInfo.mHardwareRenderer != null) { 6513 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6514 } 6515 } 6516 6517 class TakenSurfaceHolder extends BaseSurfaceHolder { 6518 @Override 6519 public boolean onAllowLockCanvas() { 6520 return mDrawingAllowed; 6521 } 6522 6523 @Override 6524 public void onRelayoutContainer() { 6525 // Not currently interesting -- from changing between fixed and layout size. 6526 } 6527 6528 @Override 6529 public void setFormat(int format) { 6530 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6531 } 6532 6533 @Override 6534 public void setType(int type) { 6535 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6536 } 6537 6538 @Override 6539 public void onUpdateSurface() { 6540 // We take care of format and type changes on our own. 6541 throw new IllegalStateException("Shouldn't be here"); 6542 } 6543 6544 @Override 6545 public boolean isCreating() { 6546 return mIsCreating; 6547 } 6548 6549 @Override 6550 public void setFixedSize(int width, int height) { 6551 throw new UnsupportedOperationException( 6552 "Currently only support sizing from layout"); 6553 } 6554 6555 @Override 6556 public void setKeepScreenOn(boolean screenOn) { 6557 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6558 } 6559 } 6560 6561 static class W extends IWindow.Stub { 6562 private final WeakReference<ViewRootImpl> mViewAncestor; 6563 private final IWindowSession mWindowSession; 6564 6565 W(ViewRootImpl viewAncestor) { 6566 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6567 mWindowSession = viewAncestor.mWindowSession; 6568 } 6569 6570 @Override 6571 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6572 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 6573 Configuration newConfig) { 6574 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6575 if (viewAncestor != null) { 6576 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6577 visibleInsets, stableInsets, outsets, reportDraw, newConfig); 6578 } 6579 } 6580 6581 @Override 6582 public void moved(int newX, int newY) { 6583 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6584 if (viewAncestor != null) { 6585 viewAncestor.dispatchMoved(newX, newY); 6586 } 6587 } 6588 6589 @Override 6590 public void dispatchAppVisibility(boolean visible) { 6591 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6592 if (viewAncestor != null) { 6593 viewAncestor.dispatchAppVisibility(visible); 6594 } 6595 } 6596 6597 @Override 6598 public void dispatchGetNewSurface() { 6599 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6600 if (viewAncestor != null) { 6601 viewAncestor.dispatchGetNewSurface(); 6602 } 6603 } 6604 6605 @Override 6606 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6607 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6608 if (viewAncestor != null) { 6609 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6610 } 6611 } 6612 6613 private static int checkCallingPermission(String permission) { 6614 try { 6615 return ActivityManagerNative.getDefault().checkPermission( 6616 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6617 } catch (RemoteException e) { 6618 return PackageManager.PERMISSION_DENIED; 6619 } 6620 } 6621 6622 @Override 6623 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6624 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6625 if (viewAncestor != null) { 6626 final View view = viewAncestor.mView; 6627 if (view != null) { 6628 if (checkCallingPermission(Manifest.permission.DUMP) != 6629 PackageManager.PERMISSION_GRANTED) { 6630 throw new SecurityException("Insufficient permissions to invoke" 6631 + " executeCommand() from pid=" + Binder.getCallingPid() 6632 + ", uid=" + Binder.getCallingUid()); 6633 } 6634 6635 OutputStream clientStream = null; 6636 try { 6637 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6638 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6639 } catch (IOException e) { 6640 e.printStackTrace(); 6641 } finally { 6642 if (clientStream != null) { 6643 try { 6644 clientStream.close(); 6645 } catch (IOException e) { 6646 e.printStackTrace(); 6647 } 6648 } 6649 } 6650 } 6651 } 6652 } 6653 6654 @Override 6655 public void closeSystemDialogs(String reason) { 6656 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6657 if (viewAncestor != null) { 6658 viewAncestor.dispatchCloseSystemDialogs(reason); 6659 } 6660 } 6661 6662 @Override 6663 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6664 boolean sync) { 6665 if (sync) { 6666 try { 6667 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6668 } catch (RemoteException e) { 6669 } 6670 } 6671 } 6672 6673 @Override 6674 public void dispatchWallpaperCommand(String action, int x, int y, 6675 int z, Bundle extras, boolean sync) { 6676 if (sync) { 6677 try { 6678 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6679 } catch (RemoteException e) { 6680 } 6681 } 6682 } 6683 6684 /* Drag/drop */ 6685 @Override 6686 public void dispatchDragEvent(DragEvent event) { 6687 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6688 if (viewAncestor != null) { 6689 viewAncestor.dispatchDragEvent(event); 6690 } 6691 } 6692 6693 @Override 6694 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6695 int localValue, int localChanges) { 6696 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6697 if (viewAncestor != null) { 6698 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6699 localValue, localChanges); 6700 } 6701 } 6702 6703 @Override 6704 public void onAnimationStarted(int remainingFrameCount) { 6705 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6706 if (viewAncestor != null) { 6707 viewAncestor.dispatchWindowAnimationStarted(remainingFrameCount); 6708 } 6709 } 6710 6711 @Override 6712 public void onAnimationStopped() { 6713 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6714 if (viewAncestor != null) { 6715 viewAncestor.dispatchWindowAnimationStopped(); 6716 } 6717 } 6718 6719 @Override 6720 public void dispatchWindowShown() { 6721 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6722 if (viewAncestor != null) { 6723 viewAncestor.dispatchWindowShown(); 6724 } 6725 } 6726 } 6727 6728 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6729 public CalledFromWrongThreadException(String msg) { 6730 super(msg); 6731 } 6732 } 6733 6734 static RunQueue getRunQueue() { 6735 RunQueue rq = sRunQueues.get(); 6736 if (rq != null) { 6737 return rq; 6738 } 6739 rq = new RunQueue(); 6740 sRunQueues.set(rq); 6741 return rq; 6742 } 6743 6744 /** 6745 * The run queue is used to enqueue pending work from Views when no Handler is 6746 * attached. The work is executed during the next call to performTraversals on 6747 * the thread. 6748 * @hide 6749 */ 6750 static final class RunQueue { 6751 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6752 6753 void post(Runnable action) { 6754 postDelayed(action, 0); 6755 } 6756 6757 void postDelayed(Runnable action, long delayMillis) { 6758 HandlerAction handlerAction = new HandlerAction(); 6759 handlerAction.action = action; 6760 handlerAction.delay = delayMillis; 6761 6762 synchronized (mActions) { 6763 mActions.add(handlerAction); 6764 } 6765 } 6766 6767 void removeCallbacks(Runnable action) { 6768 final HandlerAction handlerAction = new HandlerAction(); 6769 handlerAction.action = action; 6770 6771 synchronized (mActions) { 6772 final ArrayList<HandlerAction> actions = mActions; 6773 6774 while (actions.remove(handlerAction)) { 6775 // Keep going 6776 } 6777 } 6778 } 6779 6780 void executeActions(Handler handler) { 6781 synchronized (mActions) { 6782 final ArrayList<HandlerAction> actions = mActions; 6783 final int count = actions.size(); 6784 6785 for (int i = 0; i < count; i++) { 6786 final HandlerAction handlerAction = actions.get(i); 6787 handler.postDelayed(handlerAction.action, handlerAction.delay); 6788 } 6789 6790 actions.clear(); 6791 } 6792 } 6793 6794 private static class HandlerAction { 6795 Runnable action; 6796 long delay; 6797 6798 @Override 6799 public boolean equals(Object o) { 6800 if (this == o) return true; 6801 if (o == null || getClass() != o.getClass()) return false; 6802 6803 HandlerAction that = (HandlerAction) o; 6804 return !(action != null ? !action.equals(that.action) : that.action != null); 6805 6806 } 6807 6808 @Override 6809 public int hashCode() { 6810 int result = action != null ? action.hashCode() : 0; 6811 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6812 return result; 6813 } 6814 } 6815 } 6816 6817 /** 6818 * Class for managing the accessibility interaction connection 6819 * based on the global accessibility state. 6820 */ 6821 final class AccessibilityInteractionConnectionManager 6822 implements AccessibilityStateChangeListener { 6823 @Override 6824 public void onAccessibilityStateChanged(boolean enabled) { 6825 if (enabled) { 6826 ensureConnection(); 6827 if (mAttachInfo.mHasWindowFocus) { 6828 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6829 View focusedView = mView.findFocus(); 6830 if (focusedView != null && focusedView != mView) { 6831 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6832 } 6833 } 6834 } else { 6835 ensureNoConnection(); 6836 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6837 } 6838 } 6839 6840 public void ensureConnection() { 6841 final boolean registered = 6842 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6843 if (!registered) { 6844 mAttachInfo.mAccessibilityWindowId = 6845 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6846 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6847 } 6848 } 6849 6850 public void ensureNoConnection() { 6851 final boolean registered = 6852 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6853 if (registered) { 6854 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6855 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6856 } 6857 } 6858 } 6859 6860 final class HighContrastTextManager implements HighTextContrastChangeListener { 6861 HighContrastTextManager() { 6862 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 6863 } 6864 @Override 6865 public void onHighTextContrastStateChanged(boolean enabled) { 6866 mAttachInfo.mHighContrastText = enabled; 6867 6868 // Destroy Displaylists so they can be recreated with high contrast recordings 6869 destroyHardwareResources(); 6870 6871 // Schedule redraw, which will rerecord + redraw all text 6872 invalidate(); 6873 } 6874 } 6875 6876 /** 6877 * This class is an interface this ViewAncestor provides to the 6878 * AccessibilityManagerService to the latter can interact with 6879 * the view hierarchy in this ViewAncestor. 6880 */ 6881 static final class AccessibilityInteractionConnection 6882 extends IAccessibilityInteractionConnection.Stub { 6883 private final WeakReference<ViewRootImpl> mViewRootImpl; 6884 6885 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6886 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6887 } 6888 6889 @Override 6890 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6891 Region interactiveRegion, int interactionId, 6892 IAccessibilityInteractionConnectionCallback callback, int flags, 6893 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6894 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6895 if (viewRootImpl != null && viewRootImpl.mView != null) { 6896 viewRootImpl.getAccessibilityInteractionController() 6897 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6898 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6899 interrogatingTid, spec); 6900 } else { 6901 // We cannot make the call and notify the caller so it does not wait. 6902 try { 6903 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6904 } catch (RemoteException re) { 6905 /* best effort - ignore */ 6906 } 6907 } 6908 } 6909 6910 @Override 6911 public void performAccessibilityAction(long accessibilityNodeId, int action, 6912 Bundle arguments, int interactionId, 6913 IAccessibilityInteractionConnectionCallback callback, int flags, 6914 int interrogatingPid, long interrogatingTid) { 6915 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6916 if (viewRootImpl != null && viewRootImpl.mView != null) { 6917 viewRootImpl.getAccessibilityInteractionController() 6918 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6919 interactionId, callback, flags, interrogatingPid, interrogatingTid); 6920 } else { 6921 // We cannot make the call and notify the caller so it does not wait. 6922 try { 6923 callback.setPerformAccessibilityActionResult(false, interactionId); 6924 } catch (RemoteException re) { 6925 /* best effort - ignore */ 6926 } 6927 } 6928 } 6929 6930 @Override 6931 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6932 String viewId, Region interactiveRegion, int interactionId, 6933 IAccessibilityInteractionConnectionCallback callback, int flags, 6934 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6935 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6936 if (viewRootImpl != null && viewRootImpl.mView != null) { 6937 viewRootImpl.getAccessibilityInteractionController() 6938 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6939 viewId, interactiveRegion, interactionId, callback, flags, 6940 interrogatingPid, interrogatingTid, spec); 6941 } else { 6942 // We cannot make the call and notify the caller so it does not wait. 6943 try { 6944 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6945 } catch (RemoteException re) { 6946 /* best effort - ignore */ 6947 } 6948 } 6949 } 6950 6951 @Override 6952 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6953 Region interactiveRegion, int interactionId, 6954 IAccessibilityInteractionConnectionCallback callback, int flags, 6955 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6956 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6957 if (viewRootImpl != null && viewRootImpl.mView != null) { 6958 viewRootImpl.getAccessibilityInteractionController() 6959 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6960 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6961 interrogatingTid, spec); 6962 } else { 6963 // We cannot make the call and notify the caller so it does not wait. 6964 try { 6965 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6966 } catch (RemoteException re) { 6967 /* best effort - ignore */ 6968 } 6969 } 6970 } 6971 6972 @Override 6973 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 6974 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6975 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6976 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6977 if (viewRootImpl != null && viewRootImpl.mView != null) { 6978 viewRootImpl.getAccessibilityInteractionController() 6979 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 6980 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6981 spec); 6982 } else { 6983 // We cannot make the call and notify the caller so it does not wait. 6984 try { 6985 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6986 } catch (RemoteException re) { 6987 /* best effort - ignore */ 6988 } 6989 } 6990 } 6991 6992 @Override 6993 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 6994 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6995 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6996 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6997 if (viewRootImpl != null && viewRootImpl.mView != null) { 6998 viewRootImpl.getAccessibilityInteractionController() 6999 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 7000 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7001 spec); 7002 } else { 7003 // We cannot make the call and notify the caller so it does not wait. 7004 try { 7005 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7006 } catch (RemoteException re) { 7007 /* best effort - ignore */ 7008 } 7009 } 7010 } 7011 } 7012 7013 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 7014 private int mChangeTypes = 0; 7015 7016 public View mSource; 7017 public long mLastEventTimeMillis; 7018 7019 @Override 7020 public void run() { 7021 // The accessibility may be turned off while we were waiting so check again. 7022 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 7023 mLastEventTimeMillis = SystemClock.uptimeMillis(); 7024 AccessibilityEvent event = AccessibilityEvent.obtain(); 7025 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 7026 event.setContentChangeTypes(mChangeTypes); 7027 mSource.sendAccessibilityEventUnchecked(event); 7028 } else { 7029 mLastEventTimeMillis = 0; 7030 } 7031 // In any case reset to initial state. 7032 mSource.resetSubtreeAccessibilityStateChanged(); 7033 mSource = null; 7034 mChangeTypes = 0; 7035 } 7036 7037 public void runOrPost(View source, int changeType) { 7038 if (mSource != null) { 7039 // If there is no common predecessor, then mSource points to 7040 // a removed view, hence in this case always prefer the source. 7041 View predecessor = getCommonPredecessor(mSource, source); 7042 mSource = (predecessor != null) ? predecessor : source; 7043 mChangeTypes |= changeType; 7044 return; 7045 } 7046 mSource = source; 7047 mChangeTypes = changeType; 7048 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 7049 final long minEventIntevalMillis = 7050 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 7051 if (timeSinceLastMillis >= minEventIntevalMillis) { 7052 mSource.removeCallbacks(this); 7053 run(); 7054 } else { 7055 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 7056 } 7057 } 7058 } 7059} 7060