ViewRootImpl.java revision 916b649d06ed34c16b2ee9047f086dff184c03ee
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.ComponentCallbacks2; 25import android.content.Context; 26import android.content.pm.PackageManager; 27import android.content.res.CompatibilityInfo; 28import android.content.res.Configuration; 29import android.content.res.Resources; 30import android.graphics.Canvas; 31import android.graphics.Matrix; 32import android.graphics.Paint; 33import android.graphics.PixelFormat; 34import android.graphics.Point; 35import android.graphics.PointF; 36import android.graphics.PorterDuff; 37import android.graphics.Rect; 38import android.graphics.Region; 39import android.graphics.drawable.Drawable; 40import android.media.AudioManager; 41import android.os.Binder; 42import android.os.Bundle; 43import android.os.Debug; 44import android.os.Handler; 45import android.os.Looper; 46import android.os.Message; 47import android.os.ParcelFileDescriptor; 48import android.os.PowerManager; 49import android.os.Process; 50import android.os.RemoteException; 51import android.os.SystemClock; 52import android.os.SystemProperties; 53import android.os.Trace; 54import android.util.AndroidRuntimeException; 55import android.util.DisplayMetrics; 56import android.util.Log; 57import android.util.Slog; 58import android.util.TypedValue; 59import android.view.View.AttachInfo; 60import android.view.View.MeasureSpec; 61import android.view.accessibility.AccessibilityEvent; 62import android.view.accessibility.AccessibilityManager; 63import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 64import android.view.accessibility.AccessibilityNodeInfo; 65import android.view.accessibility.AccessibilityNodeProvider; 66import android.view.accessibility.IAccessibilityInteractionConnection; 67import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 68import android.view.animation.AccelerateDecelerateInterpolator; 69import android.view.animation.Interpolator; 70import android.view.inputmethod.InputConnection; 71import android.view.inputmethod.InputMethodManager; 72import android.view.Surface.OutOfResourcesException; 73import android.widget.Scroller; 74 75import com.android.internal.R; 76import com.android.internal.os.SomeArgs; 77import com.android.internal.policy.PolicyManager; 78import com.android.internal.view.BaseSurfaceHolder; 79import com.android.internal.view.RootViewSurfaceTaker; 80 81import java.io.FileDescriptor; 82import java.io.IOException; 83import java.io.OutputStream; 84import java.io.PrintWriter; 85import java.lang.ref.WeakReference; 86import java.util.ArrayList; 87import java.util.HashSet; 88 89/** 90 * The top of a view hierarchy, implementing the needed protocol between View 91 * and the WindowManager. This is for the most part an internal implementation 92 * detail of {@link WindowManagerGlobal}. 93 * 94 * {@hide} 95 */ 96@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 97public final class ViewRootImpl implements ViewParent, 98 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 99 private static final String TAG = "ViewRootImpl"; 100 private static final boolean DBG = false; 101 private static final boolean LOCAL_LOGV = false; 102 /** @noinspection PointlessBooleanExpression*/ 103 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 104 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 105 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 106 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 107 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 108 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 109 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 110 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 111 private static final boolean DEBUG_FPS = false; 112 113 /** 114 * Set this system property to true to force the view hierarchy to render 115 * at 60 Hz. This can be used to measure the potential framerate. 116 */ 117 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 118 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 119 120 /** 121 * Maximum time we allow the user to roll the trackball enough to generate 122 * a key event, before resetting the counters. 123 */ 124 static final int MAX_TRACKBALL_DELAY = 250; 125 126 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 127 128 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 129 static boolean sFirstDrawComplete = false; 130 131 static final ArrayList<ComponentCallbacks> sConfigCallbacks 132 = new ArrayList<ComponentCallbacks>(); 133 134 final Context mContext; 135 final IWindowSession mWindowSession; 136 final Display mDisplay; 137 final String mBasePackageName; 138 139 final int[] mTmpLocation = new int[2]; 140 141 final TypedValue mTmpValue = new TypedValue(); 142 143 final Thread mThread; 144 145 final WindowLeaked mLocation; 146 147 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 148 149 final W mWindow; 150 151 final int mTargetSdkVersion; 152 153 int mSeq; 154 155 View mView; 156 157 View mAccessibilityFocusedHost; 158 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 159 160 int mViewVisibility; 161 boolean mAppVisible = true; 162 int mOrigWindowType = -1; 163 164 // Set to true if the owner of this window is in the stopped state, 165 // so the window should no longer be active. 166 boolean mStopped = false; 167 168 boolean mLastInCompatMode = false; 169 170 SurfaceHolder.Callback2 mSurfaceHolderCallback; 171 BaseSurfaceHolder mSurfaceHolder; 172 boolean mIsCreating; 173 boolean mDrawingAllowed; 174 175 final Region mTransparentRegion; 176 final Region mPreviousTransparentRegion; 177 178 int mWidth; 179 int mHeight; 180 Rect mDirty; 181 final Rect mCurrentDirty = new Rect(); 182 boolean mIsAnimating; 183 184 CompatibilityInfo.Translator mTranslator; 185 186 final View.AttachInfo mAttachInfo; 187 InputChannel mInputChannel; 188 InputQueue.Callback mInputQueueCallback; 189 InputQueue mInputQueue; 190 FallbackEventHandler mFallbackEventHandler; 191 Choreographer mChoreographer; 192 193 final Rect mTempRect; // used in the transaction to not thrash the heap. 194 final Rect mVisRect; // used to retrieve visible rect of focused view. 195 196 boolean mTraversalScheduled; 197 int mTraversalBarrier; 198 boolean mWillDrawSoon; 199 /** Set to true while in performTraversals for detecting when die(true) is called from internal 200 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 201 boolean mIsInTraversal; 202 boolean mFitSystemWindowsRequested; 203 boolean mLayoutRequested; 204 boolean mFirst; 205 boolean mReportNextDraw; 206 boolean mFullRedrawNeeded; 207 boolean mNewSurfaceNeeded; 208 boolean mHasHadWindowFocus; 209 boolean mLastWasImTarget; 210 boolean mWindowsAnimating; 211 boolean mDrawDuringWindowsAnimating; 212 boolean mIsDrawing; 213 int mLastSystemUiVisibility; 214 int mClientWindowLayoutFlags; 215 boolean mLastOverscanRequested; 216 217 // Pool of queued input events. 218 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 219 private QueuedInputEvent mQueuedInputEventPool; 220 private int mQueuedInputEventPoolSize; 221 222 /* Input event queue. 223 * Pending input events are input events waiting to be delivered to the input stages 224 * and handled by the application. 225 */ 226 QueuedInputEvent mPendingInputEventHead; 227 QueuedInputEvent mPendingInputEventTail; 228 int mPendingInputEventCount; 229 boolean mProcessInputEventsScheduled; 230 String mPendingInputEventQueueLengthCounterName = "pq"; 231 232 InputStage mFirstInputStage; 233 InputStage mFirstPostImeInputStage; 234 235 boolean mFlipControllerFallbackKeys; 236 237 boolean mWindowAttributesChanged = false; 238 int mWindowAttributesChangesFlag = 0; 239 240 // These can be accessed by any thread, must be protected with a lock. 241 // Surface can never be reassigned or cleared (use Surface.clear()). 242 private final Surface mSurface = new Surface(); 243 244 boolean mAdded; 245 boolean mAddedTouchMode; 246 247 final DisplayAdjustments mDisplayAdjustments; 248 249 // These are accessed by multiple threads. 250 final Rect mWinFrame; // frame given by window manager. 251 252 final Rect mPendingOverscanInsets = new Rect(); 253 final Rect mPendingVisibleInsets = new Rect(); 254 final Rect mPendingContentInsets = new Rect(); 255 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 256 = new ViewTreeObserver.InternalInsetsInfo(); 257 258 final Rect mFitSystemWindowsInsets = new Rect(); 259 260 final Configuration mLastConfiguration = new Configuration(); 261 final Configuration mPendingConfiguration = new Configuration(); 262 263 boolean mScrollMayChange; 264 int mSoftInputMode; 265 WeakReference<View> mLastScrolledFocus; 266 int mScrollY; 267 int mCurScrollY; 268 Scroller mScroller; 269 HardwareLayer mResizeBuffer; 270 long mResizeBufferStartTime; 271 int mResizeBufferDuration; 272 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 273 private ArrayList<LayoutTransition> mPendingTransitions; 274 275 final ViewConfiguration mViewConfiguration; 276 277 /* Drag/drop */ 278 ClipDescription mDragDescription; 279 View mCurrentDragView; 280 volatile Object mLocalDragState; 281 final PointF mDragPoint = new PointF(); 282 final PointF mLastTouchPoint = new PointF(); 283 284 private boolean mProfileRendering; 285 private Choreographer.FrameCallback mRenderProfiler; 286 private boolean mRenderProfilingEnabled; 287 288 private boolean mMediaDisabled; 289 290 // Variables to track frames per second, enabled via DEBUG_FPS flag 291 private long mFpsStartTime = -1; 292 private long mFpsPrevTime = -1; 293 private int mFpsNumFrames; 294 295 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 296 297 /** 298 * see {@link #playSoundEffect(int)} 299 */ 300 AudioManager mAudioManager; 301 302 final AccessibilityManager mAccessibilityManager; 303 304 AccessibilityInteractionController mAccessibilityInteractionController; 305 306 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 307 308 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 309 310 HashSet<View> mTempHashSet; 311 312 private final int mDensity; 313 private final int mNoncompatDensity; 314 315 private boolean mInLayout = false; 316 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 317 boolean mHandlingLayoutInLayoutRequest = false; 318 319 private int mViewLayoutDirectionInitial; 320 321 /** Set to true once doDie() has been called. */ 322 private boolean mRemoved; 323 324 /** 325 * Consistency verifier for debugging purposes. 326 */ 327 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 328 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 329 new InputEventConsistencyVerifier(this, 0) : null; 330 331 static final class SystemUiVisibilityInfo { 332 int seq; 333 int globalVisibility; 334 int localValue; 335 int localChanges; 336 } 337 338 public ViewRootImpl(Context context, Display display) { 339 mContext = context; 340 mWindowSession = WindowManagerGlobal.getWindowSession(); 341 mDisplay = display; 342 mBasePackageName = context.getBasePackageName(); 343 344 mDisplayAdjustments = display.getDisplayAdjustments(); 345 346 mThread = Thread.currentThread(); 347 mLocation = new WindowLeaked(null); 348 mLocation.fillInStackTrace(); 349 mWidth = -1; 350 mHeight = -1; 351 mDirty = new Rect(); 352 mTempRect = new Rect(); 353 mVisRect = new Rect(); 354 mWinFrame = new Rect(); 355 mWindow = new W(this); 356 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 357 mViewVisibility = View.GONE; 358 mTransparentRegion = new Region(); 359 mPreviousTransparentRegion = new Region(); 360 mFirst = true; // true for the first time the view is added 361 mAdded = false; 362 mAccessibilityManager = AccessibilityManager.getInstance(context); 363 mAccessibilityInteractionConnectionManager = 364 new AccessibilityInteractionConnectionManager(); 365 mAccessibilityManager.addAccessibilityStateChangeListener( 366 mAccessibilityInteractionConnectionManager); 367 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 368 mViewConfiguration = ViewConfiguration.get(context); 369 mDensity = context.getResources().getDisplayMetrics().densityDpi; 370 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 371 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 372 mChoreographer = Choreographer.getInstance(); 373 mFlipControllerFallbackKeys = 374 context.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 375 376 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 377 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 378 loadSystemProperties(); 379 } 380 381 public static void addFirstDrawHandler(Runnable callback) { 382 synchronized (sFirstDrawHandlers) { 383 if (!sFirstDrawComplete) { 384 sFirstDrawHandlers.add(callback); 385 } 386 } 387 } 388 389 public static void addConfigCallback(ComponentCallbacks callback) { 390 synchronized (sConfigCallbacks) { 391 sConfigCallbacks.add(callback); 392 } 393 } 394 395 // FIXME for perf testing only 396 private boolean mProfile = false; 397 398 /** 399 * Call this to profile the next traversal call. 400 * FIXME for perf testing only. Remove eventually 401 */ 402 public void profile() { 403 mProfile = true; 404 } 405 406 /** 407 * Indicates whether we are in touch mode. Calling this method triggers an IPC 408 * call and should be avoided whenever possible. 409 * 410 * @return True, if the device is in touch mode, false otherwise. 411 * 412 * @hide 413 */ 414 static boolean isInTouchMode() { 415 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 416 if (windowSession != null) { 417 try { 418 return windowSession.getInTouchMode(); 419 } catch (RemoteException e) { 420 } 421 } 422 return false; 423 } 424 425 /** 426 * We have one child 427 */ 428 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 429 synchronized (this) { 430 if (mView == null) { 431 mView = view; 432 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 433 mFallbackEventHandler.setView(view); 434 mWindowAttributes.copyFrom(attrs); 435 if (mWindowAttributes.packageName == null) { 436 mWindowAttributes.packageName = mBasePackageName; 437 } 438 attrs = mWindowAttributes; 439 // Keep track of the actual window flags supplied by the client. 440 mClientWindowLayoutFlags = attrs.flags; 441 442 setAccessibilityFocus(null, null); 443 444 if (view instanceof RootViewSurfaceTaker) { 445 mSurfaceHolderCallback = 446 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 447 if (mSurfaceHolderCallback != null) { 448 mSurfaceHolder = new TakenSurfaceHolder(); 449 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 450 } 451 } 452 453 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 454 mTranslator = compatibilityInfo.getTranslator(); 455 mDisplayAdjustments.setActivityToken(attrs.token); 456 457 // If the application owns the surface, don't enable hardware acceleration 458 if (mSurfaceHolder == null) { 459 enableHardwareAcceleration(attrs); 460 } 461 462 boolean restore = false; 463 if (mTranslator != null) { 464 mSurface.setCompatibilityTranslator(mTranslator); 465 restore = true; 466 attrs.backup(); 467 mTranslator.translateWindowLayout(attrs); 468 } 469 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 470 471 if (!compatibilityInfo.supportsScreen()) { 472 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 473 mLastInCompatMode = true; 474 } 475 476 mSoftInputMode = attrs.softInputMode; 477 mWindowAttributesChanged = true; 478 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 479 mAttachInfo.mRootView = view; 480 mAttachInfo.mScalingRequired = mTranslator != null; 481 mAttachInfo.mApplicationScale = 482 mTranslator == null ? 1.0f : mTranslator.applicationScale; 483 if (panelParentView != null) { 484 mAttachInfo.mPanelParentWindowToken 485 = panelParentView.getApplicationWindowToken(); 486 } 487 mAdded = true; 488 int res; /* = WindowManagerImpl.ADD_OKAY; */ 489 490 // Schedule the first layout -before- adding to the window 491 // manager, to make sure we do the relayout before receiving 492 // any other events from the system. 493 requestLayout(); 494 if ((mWindowAttributes.inputFeatures 495 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 496 mInputChannel = new InputChannel(); 497 } 498 try { 499 mOrigWindowType = mWindowAttributes.type; 500 mAttachInfo.mRecomputeGlobalAttributes = true; 501 collectViewAttributes(); 502 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 503 getHostVisibility(), mDisplay.getDisplayId(), 504 mAttachInfo.mContentInsets, mInputChannel); 505 } catch (RemoteException e) { 506 mAdded = false; 507 mView = null; 508 mAttachInfo.mRootView = null; 509 mInputChannel = null; 510 mFallbackEventHandler.setView(null); 511 unscheduleTraversals(); 512 setAccessibilityFocus(null, null); 513 throw new RuntimeException("Adding window failed", e); 514 } finally { 515 if (restore) { 516 attrs.restore(); 517 } 518 } 519 520 if (mTranslator != null) { 521 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 522 } 523 mPendingOverscanInsets.set(0, 0, 0, 0); 524 mPendingContentInsets.set(mAttachInfo.mContentInsets); 525 mPendingVisibleInsets.set(0, 0, 0, 0); 526 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 527 if (res < WindowManagerGlobal.ADD_OKAY) { 528 mAttachInfo.mRootView = null; 529 mAdded = false; 530 mFallbackEventHandler.setView(null); 531 unscheduleTraversals(); 532 setAccessibilityFocus(null, null); 533 switch (res) { 534 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 535 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 536 throw new WindowManager.BadTokenException( 537 "Unable to add window -- token " + attrs.token 538 + " is not valid; is your activity running?"); 539 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 540 throw new WindowManager.BadTokenException( 541 "Unable to add window -- token " + attrs.token 542 + " is not for an application"); 543 case WindowManagerGlobal.ADD_APP_EXITING: 544 throw new WindowManager.BadTokenException( 545 "Unable to add window -- app for token " + attrs.token 546 + " is exiting"); 547 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 548 throw new WindowManager.BadTokenException( 549 "Unable to add window -- window " + mWindow 550 + " has already been added"); 551 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 552 // Silently ignore -- we would have just removed it 553 // right away, anyway. 554 return; 555 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 556 throw new WindowManager.BadTokenException( 557 "Unable to add window " + mWindow + 558 " -- another window of this type already exists"); 559 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 560 throw new WindowManager.BadTokenException( 561 "Unable to add window " + mWindow + 562 " -- permission denied for this window type"); 563 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 564 throw new WindowManager.InvalidDisplayException( 565 "Unable to add window " + mWindow + 566 " -- the specified display can not be found"); 567 } 568 throw new RuntimeException( 569 "Unable to add window -- unknown error code " + res); 570 } 571 572 if (view instanceof RootViewSurfaceTaker) { 573 mInputQueueCallback = 574 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 575 } 576 if (mInputChannel != null) { 577 if (mInputQueueCallback != null) { 578 mInputQueue = new InputQueue(); 579 mInputQueueCallback.onInputQueueCreated(mInputQueue); 580 } 581 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 582 Looper.myLooper()); 583 } 584 585 view.assignParent(this); 586 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 587 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 588 589 if (mAccessibilityManager.isEnabled()) { 590 mAccessibilityInteractionConnectionManager.ensureConnection(); 591 } 592 593 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 594 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 595 } 596 597 // Set up the input pipeline. 598 CharSequence counterSuffix = attrs.getTitle(); 599 InputStage syntheticInputStage = new SyntheticInputStage(); 600 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticInputStage); 601 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 602 "aq:native-post-ime:" + counterSuffix); 603 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 604 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 605 "aq:ime:" + counterSuffix); 606 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 607 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 608 "aq:native-pre-ime:" + counterSuffix); 609 610 mFirstInputStage = nativePreImeStage; 611 mFirstPostImeInputStage = earlyPostImeStage; 612 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 613 } 614 } 615 } 616 617 /** Whether the window is in local focus mode or not */ 618 private boolean isInLocalFocusMode() { 619 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 620 } 621 622 void destroyHardwareResources() { 623 invalidateDisplayLists(); 624 if (mAttachInfo.mHardwareRenderer != null) { 625 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 626 mAttachInfo.mHardwareRenderer.destroy(false); 627 } 628 } 629 630 void destroyHardwareLayers() { 631 if (mThread != Thread.currentThread()) { 632 if (mAttachInfo.mHardwareRenderer != null && 633 mAttachInfo.mHardwareRenderer.isEnabled()) { 634 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 635 } 636 } else { 637 invalidateDisplayLists(); 638 if (mAttachInfo.mHardwareRenderer != null && 639 mAttachInfo.mHardwareRenderer.isEnabled()) { 640 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 641 } 642 } 643 } 644 645 void pushHardwareLayerUpdate(HardwareLayer layer) { 646 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 647 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 648 } 649 } 650 651 void flushHardwareLayerUpdates() { 652 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled() && 653 mAttachInfo.mHardwareRenderer.validate()) { 654 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 655 } 656 } 657 658 void dispatchFlushHardwareLayerUpdates() { 659 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 660 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 661 } 662 663 public boolean attachFunctor(int functor) { 664 //noinspection SimplifiableIfStatement 665 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 666 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 667 } 668 return false; 669 } 670 671 public void detachFunctor(int functor) { 672 if (mAttachInfo.mHardwareRenderer != null) { 673 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 674 } 675 } 676 677 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 678 mAttachInfo.mHardwareAccelerated = false; 679 mAttachInfo.mHardwareAccelerationRequested = false; 680 681 // Don't enable hardware acceleration when the application is in compatibility mode 682 if (mTranslator != null) return; 683 684 // Try to enable hardware acceleration if requested 685 final boolean hardwareAccelerated = 686 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 687 688 if (hardwareAccelerated) { 689 if (!HardwareRenderer.isAvailable()) { 690 return; 691 } 692 693 // Persistent processes (including the system) should not do 694 // accelerated rendering on low-end devices. In that case, 695 // sRendererDisabled will be set. In addition, the system process 696 // itself should never do accelerated rendering. In that case, both 697 // sRendererDisabled and sSystemRendererDisabled are set. When 698 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 699 // can be used by code on the system process to escape that and enable 700 // HW accelerated drawing. (This is basically for the lock screen.) 701 702 final boolean fakeHwAccelerated = (attrs.privateFlags & 703 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 704 final boolean forceHwAccelerated = (attrs.privateFlags & 705 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 706 707 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 708 && forceHwAccelerated)) { 709 // Don't enable hardware acceleration when we're not on the main thread 710 if (!HardwareRenderer.sSystemRendererDisabled && 711 Looper.getMainLooper() != Looper.myLooper()) { 712 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 713 + "acceleration outside of the main thread, aborting"); 714 return; 715 } 716 717 if (mAttachInfo.mHardwareRenderer != null) { 718 mAttachInfo.mHardwareRenderer.destroy(true); 719 } 720 721 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 722 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(translucent); 723 if (mAttachInfo.mHardwareRenderer != null) { 724 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 725 mAttachInfo.mHardwareAccelerated = 726 mAttachInfo.mHardwareAccelerationRequested = true; 727 } 728 } else if (fakeHwAccelerated) { 729 // The window had wanted to use hardware acceleration, but this 730 // is not allowed in its process. By setting this flag, it can 731 // still render as if it was accelerated. This is basically for 732 // the preview windows the window manager shows for launching 733 // applications, so they will look more like the app being launched. 734 mAttachInfo.mHardwareAccelerationRequested = true; 735 } 736 } 737 } 738 739 public View getView() { 740 return mView; 741 } 742 743 final WindowLeaked getLocation() { 744 return mLocation; 745 } 746 747 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 748 synchronized (this) { 749 int oldSoftInputMode = mWindowAttributes.softInputMode; 750 // Keep track of the actual window flags supplied by the client. 751 mClientWindowLayoutFlags = attrs.flags; 752 // preserve compatible window flag if exists. 753 int compatibleWindowFlag = mWindowAttributes.privateFlags 754 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 755 // transfer over system UI visibility values as they carry current state. 756 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 757 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 758 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 759 if ((mWindowAttributesChangesFlag 760 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 761 // Recompute system ui visibility. 762 mAttachInfo.mRecomputeGlobalAttributes = true; 763 } 764 if (mWindowAttributes.packageName == null) { 765 mWindowAttributes.packageName = mBasePackageName; 766 } 767 mWindowAttributes.privateFlags |= compatibleWindowFlag; 768 769 applyKeepScreenOnFlag(mWindowAttributes); 770 771 if (newView) { 772 mSoftInputMode = attrs.softInputMode; 773 requestLayout(); 774 } 775 // Don't lose the mode we last auto-computed. 776 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 777 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 778 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 779 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 780 | (oldSoftInputMode 781 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 782 } 783 mWindowAttributesChanged = true; 784 scheduleTraversals(); 785 } 786 } 787 788 void handleAppVisibility(boolean visible) { 789 if (mAppVisible != visible) { 790 mAppVisible = visible; 791 scheduleTraversals(); 792 } 793 } 794 795 void handleGetNewSurface() { 796 mNewSurfaceNeeded = true; 797 mFullRedrawNeeded = true; 798 scheduleTraversals(); 799 } 800 801 void handleScreenStateChange(boolean on) { 802 if (on != mAttachInfo.mScreenOn) { 803 mAttachInfo.mScreenOn = on; 804 if (mView != null) { 805 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 806 } 807 if (on) { 808 mFullRedrawNeeded = true; 809 scheduleTraversals(); 810 } 811 } 812 } 813 814 @Override 815 public void requestFitSystemWindows() { 816 checkThread(); 817 mFitSystemWindowsRequested = true; 818 scheduleTraversals(); 819 } 820 821 @Override 822 public void requestLayout() { 823 if (!mHandlingLayoutInLayoutRequest) { 824 checkThread(); 825 mLayoutRequested = true; 826 scheduleTraversals(); 827 } 828 } 829 830 @Override 831 public boolean isLayoutRequested() { 832 return mLayoutRequested; 833 } 834 835 void invalidate() { 836 mDirty.set(0, 0, mWidth, mHeight); 837 scheduleTraversals(); 838 } 839 840 void invalidateWorld(View view) { 841 view.invalidate(); 842 if (view instanceof ViewGroup) { 843 ViewGroup parent = (ViewGroup) view; 844 for (int i = 0; i < parent.getChildCount(); i++) { 845 invalidateWorld(parent.getChildAt(i)); 846 } 847 } 848 } 849 850 @Override 851 public void invalidateChild(View child, Rect dirty) { 852 invalidateChildInParent(null, dirty); 853 } 854 855 @Override 856 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 857 checkThread(); 858 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 859 860 if (dirty == null) { 861 invalidate(); 862 return null; 863 } else if (dirty.isEmpty() && !mIsAnimating) { 864 return null; 865 } 866 867 if (mCurScrollY != 0 || mTranslator != null) { 868 mTempRect.set(dirty); 869 dirty = mTempRect; 870 if (mCurScrollY != 0) { 871 dirty.offset(0, -mCurScrollY); 872 } 873 if (mTranslator != null) { 874 mTranslator.translateRectInAppWindowToScreen(dirty); 875 } 876 if (mAttachInfo.mScalingRequired) { 877 dirty.inset(-1, -1); 878 } 879 } 880 881 final Rect localDirty = mDirty; 882 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 883 mAttachInfo.mSetIgnoreDirtyState = true; 884 mAttachInfo.mIgnoreDirtyState = true; 885 } 886 887 // Add the new dirty rect to the current one 888 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 889 // Intersect with the bounds of the window to skip 890 // updates that lie outside of the visible region 891 final float appScale = mAttachInfo.mApplicationScale; 892 final boolean intersected = localDirty.intersect(0, 0, 893 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 894 if (!intersected) { 895 localDirty.setEmpty(); 896 } 897 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 898 scheduleTraversals(); 899 } 900 901 return null; 902 } 903 904 void setStopped(boolean stopped) { 905 if (mStopped != stopped) { 906 mStopped = stopped; 907 if (!stopped) { 908 scheduleTraversals(); 909 } 910 } 911 } 912 913 @Override 914 public ViewParent getParent() { 915 return null; 916 } 917 918 @Override 919 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 920 if (child != mView) { 921 throw new RuntimeException("child is not mine, honest!"); 922 } 923 // Note: don't apply scroll offset, because we want to know its 924 // visibility in the virtual canvas being given to the view hierarchy. 925 return r.intersect(0, 0, mWidth, mHeight); 926 } 927 928 @Override 929 public void bringChildToFront(View child) { 930 } 931 932 int getHostVisibility() { 933 return mAppVisible ? mView.getVisibility() : View.GONE; 934 } 935 936 void disposeResizeBuffer() { 937 if (mResizeBuffer != null && mAttachInfo.mHardwareRenderer != null) { 938 mAttachInfo.mHardwareRenderer.safelyRun(new Runnable() { 939 @Override 940 public void run() { 941 mResizeBuffer.destroy(); 942 mResizeBuffer = null; 943 } 944 }); 945 } 946 } 947 948 /** 949 * Add LayoutTransition to the list of transitions to be started in the next traversal. 950 * This list will be cleared after the transitions on the list are start()'ed. These 951 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 952 * happens during the layout phase of traversal, which we want to complete before any of the 953 * animations are started (because those animations may side-effect properties that layout 954 * depends upon, like the bounding rectangles of the affected views). So we add the transition 955 * to the list and it is started just prior to starting the drawing phase of traversal. 956 * 957 * @param transition The LayoutTransition to be started on the next traversal. 958 * 959 * @hide 960 */ 961 public void requestTransitionStart(LayoutTransition transition) { 962 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 963 if (mPendingTransitions == null) { 964 mPendingTransitions = new ArrayList<LayoutTransition>(); 965 } 966 mPendingTransitions.add(transition); 967 } 968 } 969 970 void scheduleTraversals() { 971 if (!mTraversalScheduled) { 972 mTraversalScheduled = true; 973 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 974 mChoreographer.postCallback( 975 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 976 scheduleConsumeBatchedInput(); 977 } 978 } 979 980 void unscheduleTraversals() { 981 if (mTraversalScheduled) { 982 mTraversalScheduled = false; 983 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 984 mChoreographer.removeCallbacks( 985 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 986 } 987 } 988 989 void doTraversal() { 990 if (mTraversalScheduled) { 991 mTraversalScheduled = false; 992 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 993 994 if (mProfile) { 995 Debug.startMethodTracing("ViewAncestor"); 996 } 997 998 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 999 try { 1000 performTraversals(); 1001 } finally { 1002 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1003 } 1004 1005 if (mProfile) { 1006 Debug.stopMethodTracing(); 1007 mProfile = false; 1008 } 1009 } 1010 } 1011 1012 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1013 // Update window's global keep screen on flag: if a view has requested 1014 // that the screen be kept on, then it is always set; otherwise, it is 1015 // set to whatever the client last requested for the global state. 1016 if (mAttachInfo.mKeepScreenOn) { 1017 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1018 } else { 1019 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1020 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1021 } 1022 } 1023 1024 private boolean collectViewAttributes() { 1025 final View.AttachInfo attachInfo = mAttachInfo; 1026 if (attachInfo.mRecomputeGlobalAttributes) { 1027 //Log.i(TAG, "Computing view hierarchy attributes!"); 1028 attachInfo.mRecomputeGlobalAttributes = false; 1029 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1030 attachInfo.mKeepScreenOn = false; 1031 attachInfo.mSystemUiVisibility = 0; 1032 attachInfo.mHasSystemUiListeners = false; 1033 mView.dispatchCollectViewAttributes(attachInfo, 0); 1034 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1035 WindowManager.LayoutParams params = mWindowAttributes; 1036 attachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1037 if (attachInfo.mKeepScreenOn != oldScreenOn 1038 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1039 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1040 applyKeepScreenOnFlag(params); 1041 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1042 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1043 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1044 return true; 1045 } 1046 } 1047 return false; 1048 } 1049 1050 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1051 int vis = 0; 1052 // Translucent decor window flags imply stable system ui visibility. 1053 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1054 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1055 } 1056 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1057 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1058 } 1059 return vis; 1060 } 1061 1062 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1063 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1064 int childWidthMeasureSpec; 1065 int childHeightMeasureSpec; 1066 boolean windowSizeMayChange = false; 1067 1068 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1069 "Measuring " + host + " in display " + desiredWindowWidth 1070 + "x" + desiredWindowHeight + "..."); 1071 1072 boolean goodMeasure = false; 1073 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1074 // On large screens, we don't want to allow dialogs to just 1075 // stretch to fill the entire width of the screen to display 1076 // one line of text. First try doing the layout at a smaller 1077 // size to see if it will fit. 1078 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1079 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1080 int baseSize = 0; 1081 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1082 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1083 } 1084 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1085 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1086 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1087 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1088 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1089 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1090 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1091 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1092 goodMeasure = true; 1093 } else { 1094 // Didn't fit in that size... try expanding a bit. 1095 baseSize = (baseSize+desiredWindowWidth)/2; 1096 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1097 + baseSize); 1098 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1099 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1100 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1101 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1102 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1103 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1104 goodMeasure = true; 1105 } 1106 } 1107 } 1108 } 1109 1110 if (!goodMeasure) { 1111 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1112 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1113 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1114 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1115 windowSizeMayChange = true; 1116 } 1117 } 1118 1119 if (DBG) { 1120 System.out.println("======================================"); 1121 System.out.println("performTraversals -- after measure"); 1122 host.debug(); 1123 } 1124 1125 return windowSizeMayChange; 1126 } 1127 1128 /** 1129 * Modifies the input matrix such that it maps view-local coordinates to 1130 * on-screen coordinates. 1131 * 1132 * @param m input matrix to modify 1133 */ 1134 void transformMatrixToGlobal(Matrix m) { 1135 final View.AttachInfo attachInfo = mAttachInfo; 1136 m.postTranslate(attachInfo.mWindowLeft, attachInfo.mWindowTop); 1137 } 1138 1139 /** 1140 * Modifies the input matrix such that it maps on-screen coordinates to 1141 * view-local coordinates. 1142 * 1143 * @param m input matrix to modify 1144 */ 1145 void transformMatrixToLocal(Matrix m) { 1146 final View.AttachInfo attachInfo = mAttachInfo; 1147 m.preTranslate(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 1148 } 1149 1150 private void performTraversals() { 1151 // cache mView since it is used so much below... 1152 final View host = mView; 1153 1154 if (DBG) { 1155 System.out.println("======================================"); 1156 System.out.println("performTraversals"); 1157 host.debug(); 1158 } 1159 1160 if (host == null || !mAdded) 1161 return; 1162 1163 mIsInTraversal = true; 1164 mWillDrawSoon = true; 1165 boolean windowSizeMayChange = false; 1166 boolean newSurface = false; 1167 boolean surfaceChanged = false; 1168 WindowManager.LayoutParams lp = mWindowAttributes; 1169 1170 int desiredWindowWidth; 1171 int desiredWindowHeight; 1172 1173 final View.AttachInfo attachInfo = mAttachInfo; 1174 1175 final int viewVisibility = getHostVisibility(); 1176 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1177 || mNewSurfaceNeeded; 1178 1179 WindowManager.LayoutParams params = null; 1180 if (mWindowAttributesChanged) { 1181 mWindowAttributesChanged = false; 1182 surfaceChanged = true; 1183 params = lp; 1184 } 1185 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1186 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1187 params = lp; 1188 mFullRedrawNeeded = true; 1189 mLayoutRequested = true; 1190 if (mLastInCompatMode) { 1191 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1192 mLastInCompatMode = false; 1193 } else { 1194 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1195 mLastInCompatMode = true; 1196 } 1197 } 1198 1199 mWindowAttributesChangesFlag = 0; 1200 1201 Rect frame = mWinFrame; 1202 if (mFirst) { 1203 mFullRedrawNeeded = true; 1204 mLayoutRequested = true; 1205 1206 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1207 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1208 // NOTE -- system code, won't try to do compat mode. 1209 Point size = new Point(); 1210 mDisplay.getRealSize(size); 1211 desiredWindowWidth = size.x; 1212 desiredWindowHeight = size.y; 1213 } else { 1214 DisplayMetrics packageMetrics = 1215 mView.getContext().getResources().getDisplayMetrics(); 1216 desiredWindowWidth = packageMetrics.widthPixels; 1217 desiredWindowHeight = packageMetrics.heightPixels; 1218 } 1219 1220 // We used to use the following condition to choose 32 bits drawing caches: 1221 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1222 // However, windows are now always 32 bits by default, so choose 32 bits 1223 attachInfo.mUse32BitDrawingCache = true; 1224 attachInfo.mHasWindowFocus = false; 1225 attachInfo.mWindowVisibility = viewVisibility; 1226 attachInfo.mRecomputeGlobalAttributes = false; 1227 viewVisibilityChanged = false; 1228 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1229 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1230 // Set the layout direction if it has not been set before (inherit is the default) 1231 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1232 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1233 } 1234 host.dispatchAttachedToWindow(attachInfo, 0); 1235 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1236 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1237 host.fitSystemWindows(mFitSystemWindowsInsets); 1238 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1239 1240 } else { 1241 desiredWindowWidth = frame.width(); 1242 desiredWindowHeight = frame.height(); 1243 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1244 if (DEBUG_ORIENTATION) Log.v(TAG, 1245 "View " + host + " resized to: " + frame); 1246 mFullRedrawNeeded = true; 1247 mLayoutRequested = true; 1248 windowSizeMayChange = true; 1249 } 1250 } 1251 1252 if (viewVisibilityChanged) { 1253 attachInfo.mWindowVisibility = viewVisibility; 1254 host.dispatchWindowVisibilityChanged(viewVisibility); 1255 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1256 destroyHardwareResources(); 1257 } 1258 if (viewVisibility == View.GONE) { 1259 // After making a window gone, we will count it as being 1260 // shown for the first time the next time it gets focus. 1261 mHasHadWindowFocus = false; 1262 } 1263 } 1264 1265 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1266 getRunQueue().executeActions(attachInfo.mHandler); 1267 1268 boolean insetsChanged = false; 1269 1270 boolean layoutRequested = mLayoutRequested && !mStopped; 1271 if (layoutRequested) { 1272 1273 final Resources res = mView.getContext().getResources(); 1274 1275 if (mFirst) { 1276 // make sure touch mode code executes by setting cached value 1277 // to opposite of the added touch mode. 1278 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1279 ensureTouchModeLocally(mAddedTouchMode); 1280 } else { 1281 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1282 insetsChanged = true; 1283 } 1284 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1285 insetsChanged = true; 1286 } 1287 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1288 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1289 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1290 + mAttachInfo.mVisibleInsets); 1291 } 1292 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1293 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1294 windowSizeMayChange = true; 1295 1296 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1297 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1298 // NOTE -- system code, won't try to do compat mode. 1299 Point size = new Point(); 1300 mDisplay.getRealSize(size); 1301 desiredWindowWidth = size.x; 1302 desiredWindowHeight = size.y; 1303 } else { 1304 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1305 desiredWindowWidth = packageMetrics.widthPixels; 1306 desiredWindowHeight = packageMetrics.heightPixels; 1307 } 1308 } 1309 } 1310 1311 // Ask host how big it wants to be 1312 windowSizeMayChange |= measureHierarchy(host, lp, res, 1313 desiredWindowWidth, desiredWindowHeight); 1314 } 1315 1316 if (collectViewAttributes()) { 1317 params = lp; 1318 } 1319 if (attachInfo.mForceReportNewAttributes) { 1320 attachInfo.mForceReportNewAttributes = false; 1321 params = lp; 1322 } 1323 1324 if (mFirst || attachInfo.mViewVisibilityChanged) { 1325 attachInfo.mViewVisibilityChanged = false; 1326 int resizeMode = mSoftInputMode & 1327 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1328 // If we are in auto resize mode, then we need to determine 1329 // what mode to use now. 1330 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1331 final int N = attachInfo.mScrollContainers.size(); 1332 for (int i=0; i<N; i++) { 1333 if (attachInfo.mScrollContainers.get(i).isShown()) { 1334 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1335 } 1336 } 1337 if (resizeMode == 0) { 1338 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1339 } 1340 if ((lp.softInputMode & 1341 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1342 lp.softInputMode = (lp.softInputMode & 1343 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1344 resizeMode; 1345 params = lp; 1346 } 1347 } 1348 } 1349 1350 if (params != null) { 1351 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1352 if (!PixelFormat.formatHasAlpha(params.format)) { 1353 params.format = PixelFormat.TRANSLUCENT; 1354 } 1355 } 1356 mAttachInfo.mOverscanRequested = (params.flags 1357 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1358 } 1359 1360 if (mFitSystemWindowsRequested) { 1361 mFitSystemWindowsRequested = false; 1362 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1363 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1364 host.fitSystemWindows(mFitSystemWindowsInsets); 1365 if (mLayoutRequested) { 1366 // Short-circuit catching a new layout request here, so 1367 // we don't need to go through two layout passes when things 1368 // change due to fitting system windows, which can happen a lot. 1369 windowSizeMayChange |= measureHierarchy(host, lp, 1370 mView.getContext().getResources(), 1371 desiredWindowWidth, desiredWindowHeight); 1372 } 1373 } 1374 1375 if (layoutRequested) { 1376 // Clear this now, so that if anything requests a layout in the 1377 // rest of this function we will catch it and re-run a full 1378 // layout pass. 1379 mLayoutRequested = false; 1380 } 1381 1382 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1383 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1384 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1385 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1386 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1387 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1388 1389 // Determine whether to compute insets. 1390 // If there are no inset listeners remaining then we may still need to compute 1391 // insets in case the old insets were non-empty and must be reset. 1392 final boolean computesInternalInsets = 1393 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1394 || attachInfo.mHasNonEmptyGivenInternalInsets; 1395 1396 boolean insetsPending = false; 1397 int relayoutResult = 0; 1398 1399 if (mFirst || windowShouldResize || insetsChanged || 1400 viewVisibilityChanged || params != null) { 1401 1402 if (viewVisibility == View.VISIBLE) { 1403 // If this window is giving internal insets to the window 1404 // manager, and it is being added or changing its visibility, 1405 // then we want to first give the window manager "fake" 1406 // insets to cause it to effectively ignore the content of 1407 // the window during layout. This avoids it briefly causing 1408 // other windows to resize/move based on the raw frame of the 1409 // window, waiting until we can finish laying out this window 1410 // and get back to the window manager with the ultimately 1411 // computed insets. 1412 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1413 } 1414 1415 if (mSurfaceHolder != null) { 1416 mSurfaceHolder.mSurfaceLock.lock(); 1417 mDrawingAllowed = true; 1418 } 1419 1420 boolean hwInitialized = false; 1421 boolean contentInsetsChanged = false; 1422 boolean hadSurface = mSurface.isValid(); 1423 1424 try { 1425 if (DEBUG_LAYOUT) { 1426 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1427 host.getMeasuredHeight() + ", params=" + params); 1428 } 1429 1430 final int surfaceGenerationId = mSurface.getGenerationId(); 1431 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1432 if (!mDrawDuringWindowsAnimating && 1433 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1434 mWindowsAnimating = true; 1435 } 1436 1437 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1438 + " overscan=" + mPendingOverscanInsets.toShortString() 1439 + " content=" + mPendingContentInsets.toShortString() 1440 + " visible=" + mPendingVisibleInsets.toShortString() 1441 + " surface=" + mSurface); 1442 1443 if (mPendingConfiguration.seq != 0) { 1444 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1445 + mPendingConfiguration); 1446 updateConfiguration(mPendingConfiguration, !mFirst); 1447 mPendingConfiguration.seq = 0; 1448 } 1449 1450 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1451 mAttachInfo.mOverscanInsets); 1452 contentInsetsChanged = !mPendingContentInsets.equals( 1453 mAttachInfo.mContentInsets); 1454 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1455 mAttachInfo.mVisibleInsets); 1456 if (contentInsetsChanged) { 1457 if (mWidth > 0 && mHeight > 0 && lp != null && 1458 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1459 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1460 mSurface != null && mSurface.isValid() && 1461 !mAttachInfo.mTurnOffWindowResizeAnim && 1462 mAttachInfo.mHardwareRenderer != null && 1463 mAttachInfo.mHardwareRenderer.isEnabled() && 1464 mAttachInfo.mHardwareRenderer.validate() && 1465 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1466 1467 disposeResizeBuffer(); 1468 1469 boolean completed = false; 1470 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1471 HardwareCanvas layerCanvas = null; 1472 try { 1473 if (mResizeBuffer == null) { 1474 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1475 mWidth, mHeight, false); 1476 } else if (mResizeBuffer.getWidth() != mWidth || 1477 mResizeBuffer.getHeight() != mHeight) { 1478 mResizeBuffer.resize(mWidth, mHeight); 1479 } 1480 // TODO: should handle create/resize failure 1481 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1482 final int restoreCount = layerCanvas.save(); 1483 1484 int yoff; 1485 final boolean scrolling = mScroller != null 1486 && mScroller.computeScrollOffset(); 1487 if (scrolling) { 1488 yoff = mScroller.getCurrY(); 1489 mScroller.abortAnimation(); 1490 } else { 1491 yoff = mScrollY; 1492 } 1493 1494 layerCanvas.translate(0, -yoff); 1495 if (mTranslator != null) { 1496 mTranslator.translateCanvas(layerCanvas); 1497 } 1498 1499 DisplayList displayList = mView.mDisplayList; 1500 if (displayList != null && displayList.isValid()) { 1501 layerCanvas.drawDisplayList(displayList, null, 1502 DisplayList.FLAG_CLIP_CHILDREN); 1503 } else { 1504 mView.draw(layerCanvas); 1505 } 1506 1507 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1508 1509 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1510 mResizeBufferDuration = mView.getResources().getInteger( 1511 com.android.internal.R.integer.config_mediumAnimTime); 1512 completed = true; 1513 1514 layerCanvas.restoreToCount(restoreCount); 1515 } catch (OutOfMemoryError e) { 1516 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1517 } finally { 1518 if (mResizeBuffer != null) { 1519 mResizeBuffer.end(hwRendererCanvas); 1520 if (!completed) { 1521 disposeResizeBuffer(); 1522 } 1523 } 1524 } 1525 } 1526 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1527 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1528 + mAttachInfo.mContentInsets); 1529 } 1530 if (overscanInsetsChanged) { 1531 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1532 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1533 + mAttachInfo.mOverscanInsets); 1534 // Need to relayout with content insets. 1535 contentInsetsChanged = true; 1536 } 1537 if (contentInsetsChanged || mLastSystemUiVisibility != 1538 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1539 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1540 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1541 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1542 mFitSystemWindowsRequested = false; 1543 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1544 host.fitSystemWindows(mFitSystemWindowsInsets); 1545 } 1546 if (visibleInsetsChanged) { 1547 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1548 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1549 + mAttachInfo.mVisibleInsets); 1550 } 1551 1552 if (!hadSurface) { 1553 if (mSurface.isValid()) { 1554 // If we are creating a new surface, then we need to 1555 // completely redraw it. Also, when we get to the 1556 // point of drawing it we will hold off and schedule 1557 // a new traversal instead. This is so we can tell the 1558 // window manager about all of the windows being displayed 1559 // before actually drawing them, so it can display then 1560 // all at once. 1561 newSurface = true; 1562 mFullRedrawNeeded = true; 1563 mPreviousTransparentRegion.setEmpty(); 1564 1565 if (mAttachInfo.mHardwareRenderer != null) { 1566 try { 1567 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1568 mSurface); 1569 } catch (OutOfResourcesException e) { 1570 handleOutOfResourcesException(e); 1571 return; 1572 } 1573 } 1574 } 1575 } else if (!mSurface.isValid()) { 1576 // If the surface has been removed, then reset the scroll 1577 // positions. 1578 if (mLastScrolledFocus != null) { 1579 mLastScrolledFocus.clear(); 1580 } 1581 mScrollY = mCurScrollY = 0; 1582 if (mScroller != null) { 1583 mScroller.abortAnimation(); 1584 } 1585 disposeResizeBuffer(); 1586 // Our surface is gone 1587 if (mAttachInfo.mHardwareRenderer != null && 1588 mAttachInfo.mHardwareRenderer.isEnabled()) { 1589 mAttachInfo.mHardwareRenderer.destroy(true); 1590 } 1591 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1592 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1593 mFullRedrawNeeded = true; 1594 try { 1595 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1596 } catch (OutOfResourcesException e) { 1597 handleOutOfResourcesException(e); 1598 return; 1599 } 1600 } 1601 } catch (RemoteException e) { 1602 } 1603 1604 if (DEBUG_ORIENTATION) Log.v( 1605 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1606 1607 attachInfo.mWindowLeft = frame.left; 1608 attachInfo.mWindowTop = frame.top; 1609 1610 // !!FIXME!! This next section handles the case where we did not get the 1611 // window size we asked for. We should avoid this by getting a maximum size from 1612 // the window session beforehand. 1613 if (mWidth != frame.width() || mHeight != frame.height()) { 1614 mWidth = frame.width(); 1615 mHeight = frame.height(); 1616 } 1617 1618 if (mSurfaceHolder != null) { 1619 // The app owns the surface; tell it about what is going on. 1620 if (mSurface.isValid()) { 1621 // XXX .copyFrom() doesn't work! 1622 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1623 mSurfaceHolder.mSurface = mSurface; 1624 } 1625 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1626 mSurfaceHolder.mSurfaceLock.unlock(); 1627 if (mSurface.isValid()) { 1628 if (!hadSurface) { 1629 mSurfaceHolder.ungetCallbacks(); 1630 1631 mIsCreating = true; 1632 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1633 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1634 if (callbacks != null) { 1635 for (SurfaceHolder.Callback c : callbacks) { 1636 c.surfaceCreated(mSurfaceHolder); 1637 } 1638 } 1639 surfaceChanged = true; 1640 } 1641 if (surfaceChanged) { 1642 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1643 lp.format, mWidth, mHeight); 1644 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1645 if (callbacks != null) { 1646 for (SurfaceHolder.Callback c : callbacks) { 1647 c.surfaceChanged(mSurfaceHolder, lp.format, 1648 mWidth, mHeight); 1649 } 1650 } 1651 } 1652 mIsCreating = false; 1653 } else if (hadSurface) { 1654 mSurfaceHolder.ungetCallbacks(); 1655 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1656 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1657 if (callbacks != null) { 1658 for (SurfaceHolder.Callback c : callbacks) { 1659 c.surfaceDestroyed(mSurfaceHolder); 1660 } 1661 } 1662 mSurfaceHolder.mSurfaceLock.lock(); 1663 try { 1664 mSurfaceHolder.mSurface = new Surface(); 1665 } finally { 1666 mSurfaceHolder.mSurfaceLock.unlock(); 1667 } 1668 } 1669 } 1670 1671 if (mAttachInfo.mHardwareRenderer != null && 1672 mAttachInfo.mHardwareRenderer.isEnabled()) { 1673 if (hwInitialized || 1674 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1675 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1676 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1677 if (!hwInitialized) { 1678 mAttachInfo.mHardwareRenderer.invalidate(mSurface); 1679 mFullRedrawNeeded = true; 1680 } 1681 } 1682 } 1683 1684 if (!mStopped) { 1685 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1686 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1687 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1688 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1689 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1690 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1691 1692 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1693 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1694 + " mHeight=" + mHeight 1695 + " measuredHeight=" + host.getMeasuredHeight() 1696 + " coveredInsetsChanged=" + contentInsetsChanged); 1697 1698 // Ask host how big it wants to be 1699 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1700 1701 // Implementation of weights from WindowManager.LayoutParams 1702 // We just grow the dimensions as needed and re-measure if 1703 // needs be 1704 int width = host.getMeasuredWidth(); 1705 int height = host.getMeasuredHeight(); 1706 boolean measureAgain = false; 1707 1708 if (lp.horizontalWeight > 0.0f) { 1709 width += (int) ((mWidth - width) * lp.horizontalWeight); 1710 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1711 MeasureSpec.EXACTLY); 1712 measureAgain = true; 1713 } 1714 if (lp.verticalWeight > 0.0f) { 1715 height += (int) ((mHeight - height) * lp.verticalWeight); 1716 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1717 MeasureSpec.EXACTLY); 1718 measureAgain = true; 1719 } 1720 1721 if (measureAgain) { 1722 if (DEBUG_LAYOUT) Log.v(TAG, 1723 "And hey let's measure once more: width=" + width 1724 + " height=" + height); 1725 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1726 } 1727 1728 layoutRequested = true; 1729 } 1730 } 1731 } else { 1732 // Not the first pass and no window/insets/visibility change but the window 1733 // may have moved and we need check that and if so to update the left and right 1734 // in the attach info. We translate only the window frame since on window move 1735 // the window manager tells us only for the new frame but the insets are the 1736 // same and we do not want to translate them more than once. 1737 1738 // TODO: Well, we are checking whether the frame has changed similarly 1739 // to how this is done for the insets. This is however incorrect since 1740 // the insets and the frame are translated. For example, the old frame 1741 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1742 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1743 // true since we are comparing a not translated value to a translated one. 1744 // This scenario is rare but we may want to fix that. 1745 1746 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1747 || attachInfo.mWindowTop != frame.top); 1748 if (windowMoved) { 1749 if (mTranslator != null) { 1750 mTranslator.translateRectInScreenToAppWinFrame(frame); 1751 } 1752 attachInfo.mWindowLeft = frame.left; 1753 attachInfo.mWindowTop = frame.top; 1754 } 1755 } 1756 1757 final boolean didLayout = layoutRequested && !mStopped; 1758 boolean triggerGlobalLayoutListener = didLayout 1759 || attachInfo.mRecomputeGlobalAttributes; 1760 if (didLayout) { 1761 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1762 1763 // By this point all views have been sized and positioned 1764 // We can compute the transparent area 1765 1766 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1767 // start out transparent 1768 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1769 host.getLocationInWindow(mTmpLocation); 1770 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1771 mTmpLocation[0] + host.mRight - host.mLeft, 1772 mTmpLocation[1] + host.mBottom - host.mTop); 1773 1774 host.gatherTransparentRegion(mTransparentRegion); 1775 if (mTranslator != null) { 1776 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1777 } 1778 1779 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1780 mPreviousTransparentRegion.set(mTransparentRegion); 1781 mFullRedrawNeeded = true; 1782 // reconfigure window manager 1783 try { 1784 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1785 } catch (RemoteException e) { 1786 } 1787 } 1788 } 1789 1790 if (DBG) { 1791 System.out.println("======================================"); 1792 System.out.println("performTraversals -- after setFrame"); 1793 host.debug(); 1794 } 1795 } 1796 1797 if (triggerGlobalLayoutListener) { 1798 attachInfo.mRecomputeGlobalAttributes = false; 1799 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1800 } 1801 1802 if (computesInternalInsets) { 1803 // Clear the original insets. 1804 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1805 insets.reset(); 1806 1807 // Compute new insets in place. 1808 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1809 attachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1810 1811 // Tell the window manager. 1812 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1813 mLastGivenInsets.set(insets); 1814 1815 // Translate insets to screen coordinates if needed. 1816 final Rect contentInsets; 1817 final Rect visibleInsets; 1818 final Region touchableRegion; 1819 if (mTranslator != null) { 1820 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1821 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1822 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1823 } else { 1824 contentInsets = insets.contentInsets; 1825 visibleInsets = insets.visibleInsets; 1826 touchableRegion = insets.touchableRegion; 1827 } 1828 1829 try { 1830 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1831 contentInsets, visibleInsets, touchableRegion); 1832 } catch (RemoteException e) { 1833 } 1834 } 1835 } 1836 1837 boolean skipDraw = false; 1838 1839 if (mFirst) { 1840 // handle first focus request 1841 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1842 + mView.hasFocus()); 1843 if (mView != null) { 1844 if (!mView.hasFocus()) { 1845 mView.requestFocus(View.FOCUS_FORWARD); 1846 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1847 + mView.findFocus()); 1848 } else { 1849 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1850 + mView.findFocus()); 1851 } 1852 } 1853 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1854 // The first time we relayout the window, if the system is 1855 // doing window animations, we want to hold of on any future 1856 // draws until the animation is done. 1857 mWindowsAnimating = true; 1858 } 1859 } else if (mWindowsAnimating) { 1860 skipDraw = true; 1861 } 1862 1863 mFirst = false; 1864 mWillDrawSoon = false; 1865 mNewSurfaceNeeded = false; 1866 mViewVisibility = viewVisibility; 1867 1868 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1869 final boolean imTarget = WindowManager.LayoutParams 1870 .mayUseInputMethod(mWindowAttributes.flags); 1871 if (imTarget != mLastWasImTarget) { 1872 mLastWasImTarget = imTarget; 1873 InputMethodManager imm = InputMethodManager.peekInstance(); 1874 if (imm != null && imTarget) { 1875 imm.startGettingWindowFocus(mView); 1876 imm.onWindowFocus(mView, mView.findFocus(), 1877 mWindowAttributes.softInputMode, 1878 !mHasHadWindowFocus, mWindowAttributes.flags); 1879 } 1880 } 1881 } 1882 1883 // Remember if we must report the next draw. 1884 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1885 mReportNextDraw = true; 1886 } 1887 1888 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1889 viewVisibility != View.VISIBLE; 1890 1891 if (!cancelDraw && !newSurface) { 1892 if (!skipDraw || mReportNextDraw) { 1893 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1894 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1895 mPendingTransitions.get(i).startChangingAnimations(); 1896 } 1897 mPendingTransitions.clear(); 1898 } 1899 1900 performDraw(); 1901 } 1902 } else { 1903 if (viewVisibility == View.VISIBLE) { 1904 // Try again 1905 scheduleTraversals(); 1906 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1907 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1908 mPendingTransitions.get(i).endChangingAnimations(); 1909 } 1910 mPendingTransitions.clear(); 1911 } 1912 } 1913 1914 mIsInTraversal = false; 1915 } 1916 1917 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1918 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1919 try { 1920 if (!mWindowSession.outOfMemory(mWindow) && 1921 Process.myUid() != Process.SYSTEM_UID) { 1922 Slog.w(TAG, "No processes killed for memory; killing self"); 1923 Process.killProcess(Process.myPid()); 1924 } 1925 } catch (RemoteException ex) { 1926 } 1927 mLayoutRequested = true; // ask wm for a new surface next time. 1928 } 1929 1930 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1931 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1932 try { 1933 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1934 } finally { 1935 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1936 } 1937 } 1938 1939 /** 1940 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1941 * is currently undergoing a layout pass. 1942 * 1943 * @return whether the view hierarchy is currently undergoing a layout pass 1944 */ 1945 boolean isInLayout() { 1946 return mInLayout; 1947 } 1948 1949 /** 1950 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1951 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1952 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1953 * all children in that container hierarchy are measured and laid out at the end of the layout 1954 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1955 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1956 * we check all of those views to see if any still have pending layout requests, which 1957 * indicates that they were not correctly handled by their container hierarchy. If that is 1958 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1959 * to blank containers, and force a second request/measure/layout pass in this frame. If 1960 * more requestLayout() calls are received during that second layout pass, we post those 1961 * requests to the next frame to avoid possible infinite loops. 1962 * 1963 * <p>The return value from this method indicates whether the request should proceed 1964 * (if it is a request during the first layout pass) or should be skipped and posted to the 1965 * next frame (if it is a request during the second layout pass).</p> 1966 * 1967 * @param view the view that requested the layout. 1968 * 1969 * @return true if request should proceed, false otherwise. 1970 */ 1971 boolean requestLayoutDuringLayout(final View view) { 1972 if (view.mParent == null || view.mAttachInfo == null) { 1973 // Would not normally trigger another layout, so just let it pass through as usual 1974 return true; 1975 } 1976 if (!mLayoutRequesters.contains(view)) { 1977 mLayoutRequesters.add(view); 1978 } 1979 if (!mHandlingLayoutInLayoutRequest) { 1980 // Let the request proceed normally; it will be processed in a second layout pass 1981 // if necessary 1982 return true; 1983 } else { 1984 // Don't let the request proceed during the second layout pass. 1985 // It will post to the next frame instead. 1986 return false; 1987 } 1988 } 1989 1990 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1991 int desiredWindowHeight) { 1992 mLayoutRequested = false; 1993 mScrollMayChange = true; 1994 mInLayout = true; 1995 1996 final View host = mView; 1997 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1998 Log.v(TAG, "Laying out " + host + " to (" + 1999 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2000 } 2001 2002 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2003 try { 2004 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2005 2006 mInLayout = false; 2007 int numViewsRequestingLayout = mLayoutRequesters.size(); 2008 if (numViewsRequestingLayout > 0) { 2009 // requestLayout() was called during layout. 2010 // If no layout-request flags are set on the requesting views, there is no problem. 2011 // If some requests are still pending, then we need to clear those flags and do 2012 // a full request/measure/layout pass to handle this situation. 2013 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2014 false); 2015 if (validLayoutRequesters != null) { 2016 // Set this flag to indicate that any further requests are happening during 2017 // the second pass, which may result in posting those requests to the next 2018 // frame instead 2019 mHandlingLayoutInLayoutRequest = true; 2020 2021 // Process fresh layout requests, then measure and layout 2022 int numValidRequests = validLayoutRequesters.size(); 2023 for (int i = 0; i < numValidRequests; ++i) { 2024 final View view = validLayoutRequesters.get(i); 2025 Log.w("View", "requestLayout() improperly called by " + view + 2026 " during layout: running second layout pass"); 2027 view.requestLayout(); 2028 } 2029 measureHierarchy(host, lp, mView.getContext().getResources(), 2030 desiredWindowWidth, desiredWindowHeight); 2031 mInLayout = true; 2032 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2033 2034 mHandlingLayoutInLayoutRequest = false; 2035 2036 // Check the valid requests again, this time without checking/clearing the 2037 // layout flags, since requests happening during the second pass get noop'd 2038 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2039 if (validLayoutRequesters != null) { 2040 final ArrayList<View> finalRequesters = validLayoutRequesters; 2041 // Post second-pass requests to the next frame 2042 getRunQueue().post(new Runnable() { 2043 @Override 2044 public void run() { 2045 int numValidRequests = finalRequesters.size(); 2046 for (int i = 0; i < numValidRequests; ++i) { 2047 final View view = finalRequesters.get(i); 2048 Log.w("View", "requestLayout() improperly called by " + view + 2049 " during second layout pass: posting in next frame"); 2050 view.requestLayout(); 2051 } 2052 } 2053 }); 2054 } 2055 } 2056 2057 } 2058 } finally { 2059 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2060 } 2061 mInLayout = false; 2062 } 2063 2064 /** 2065 * This method is called during layout when there have been calls to requestLayout() during 2066 * layout. It walks through the list of views that requested layout to determine which ones 2067 * still need it, based on visibility in the hierarchy and whether they have already been 2068 * handled (as is usually the case with ListView children). 2069 * 2070 * @param layoutRequesters The list of views that requested layout during layout 2071 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2072 * If so, the FORCE_LAYOUT flag was not set on requesters. 2073 * @return A list of the actual views that still need to be laid out. 2074 */ 2075 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2076 boolean secondLayoutRequests) { 2077 2078 int numViewsRequestingLayout = layoutRequesters.size(); 2079 ArrayList<View> validLayoutRequesters = null; 2080 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2081 View view = layoutRequesters.get(i); 2082 if (view != null && view.mAttachInfo != null && view.mParent != null && 2083 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2084 View.PFLAG_FORCE_LAYOUT)) { 2085 boolean gone = false; 2086 View parent = view; 2087 // Only trigger new requests for views in a non-GONE hierarchy 2088 while (parent != null) { 2089 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2090 gone = true; 2091 break; 2092 } 2093 if (parent.mParent instanceof View) { 2094 parent = (View) parent.mParent; 2095 } else { 2096 parent = null; 2097 } 2098 } 2099 if (!gone) { 2100 if (validLayoutRequesters == null) { 2101 validLayoutRequesters = new ArrayList<View>(); 2102 } 2103 validLayoutRequesters.add(view); 2104 } 2105 } 2106 } 2107 if (!secondLayoutRequests) { 2108 // If we're checking the layout flags, then we need to clean them up also 2109 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2110 View view = layoutRequesters.get(i); 2111 while (view != null && 2112 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2113 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2114 if (view.mParent instanceof View) { 2115 view = (View) view.mParent; 2116 } else { 2117 view = null; 2118 } 2119 } 2120 } 2121 } 2122 layoutRequesters.clear(); 2123 return validLayoutRequesters; 2124 } 2125 2126 @Override 2127 public void requestTransparentRegion(View child) { 2128 // the test below should not fail unless someone is messing with us 2129 checkThread(); 2130 if (mView == child) { 2131 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2132 // Need to make sure we re-evaluate the window attributes next 2133 // time around, to ensure the window has the correct format. 2134 mWindowAttributesChanged = true; 2135 mWindowAttributesChangesFlag = 0; 2136 requestLayout(); 2137 } 2138 } 2139 2140 /** 2141 * Figures out the measure spec for the root view in a window based on it's 2142 * layout params. 2143 * 2144 * @param windowSize 2145 * The available width or height of the window 2146 * 2147 * @param rootDimension 2148 * The layout params for one dimension (width or height) of the 2149 * window. 2150 * 2151 * @return The measure spec to use to measure the root view. 2152 */ 2153 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2154 int measureSpec; 2155 switch (rootDimension) { 2156 2157 case ViewGroup.LayoutParams.MATCH_PARENT: 2158 // Window can't resize. Force root view to be windowSize. 2159 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2160 break; 2161 case ViewGroup.LayoutParams.WRAP_CONTENT: 2162 // Window can resize. Set max size for root view. 2163 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2164 break; 2165 default: 2166 // Window wants to be an exact size. Force root view to be that size. 2167 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2168 break; 2169 } 2170 return measureSpec; 2171 } 2172 2173 int mHardwareYOffset; 2174 int mResizeAlpha; 2175 final Paint mResizePaint = new Paint(); 2176 2177 @Override 2178 public void onHardwarePreDraw(HardwareCanvas canvas) { 2179 canvas.translate(0, -mHardwareYOffset); 2180 } 2181 2182 @Override 2183 public void onHardwarePostDraw(HardwareCanvas canvas) { 2184 if (mResizeBuffer != null) { 2185 mResizePaint.setAlpha(mResizeAlpha); 2186 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2187 } 2188 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2189 } 2190 2191 /** 2192 * @hide 2193 */ 2194 void outputDisplayList(View view) { 2195 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2196 DisplayList displayList = view.getDisplayList(); 2197 if (displayList != null) { 2198 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2199 } 2200 } 2201 } 2202 2203 /** 2204 * @see #PROPERTY_PROFILE_RENDERING 2205 */ 2206 private void profileRendering(boolean enabled) { 2207 if (mProfileRendering) { 2208 mRenderProfilingEnabled = enabled; 2209 2210 if (mRenderProfiler != null) { 2211 mChoreographer.removeFrameCallback(mRenderProfiler); 2212 } 2213 if (mRenderProfilingEnabled) { 2214 if (mRenderProfiler == null) { 2215 mRenderProfiler = new Choreographer.FrameCallback() { 2216 @Override 2217 public void doFrame(long frameTimeNanos) { 2218 mDirty.set(0, 0, mWidth, mHeight); 2219 scheduleTraversals(); 2220 if (mRenderProfilingEnabled) { 2221 mChoreographer.postFrameCallback(mRenderProfiler); 2222 } 2223 } 2224 }; 2225 } 2226 mChoreographer.postFrameCallback(mRenderProfiler); 2227 } else { 2228 mRenderProfiler = null; 2229 } 2230 } 2231 } 2232 2233 /** 2234 * Called from draw() when DEBUG_FPS is enabled 2235 */ 2236 private void trackFPS() { 2237 // Tracks frames per second drawn. First value in a series of draws may be bogus 2238 // because it down not account for the intervening idle time 2239 long nowTime = System.currentTimeMillis(); 2240 if (mFpsStartTime < 0) { 2241 mFpsStartTime = mFpsPrevTime = nowTime; 2242 mFpsNumFrames = 0; 2243 } else { 2244 ++mFpsNumFrames; 2245 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2246 long frameTime = nowTime - mFpsPrevTime; 2247 long totalTime = nowTime - mFpsStartTime; 2248 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2249 mFpsPrevTime = nowTime; 2250 if (totalTime > 1000) { 2251 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2252 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2253 mFpsStartTime = nowTime; 2254 mFpsNumFrames = 0; 2255 } 2256 } 2257 } 2258 2259 private void performDraw() { 2260 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2261 return; 2262 } 2263 2264 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2265 mFullRedrawNeeded = false; 2266 2267 mIsDrawing = true; 2268 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2269 try { 2270 draw(fullRedrawNeeded); 2271 } finally { 2272 mIsDrawing = false; 2273 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2274 } 2275 2276 if (mReportNextDraw) { 2277 mReportNextDraw = false; 2278 2279 if (LOCAL_LOGV) { 2280 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2281 } 2282 if (mSurfaceHolder != null && mSurface.isValid()) { 2283 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2284 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2285 if (callbacks != null) { 2286 for (SurfaceHolder.Callback c : callbacks) { 2287 if (c instanceof SurfaceHolder.Callback2) { 2288 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2289 mSurfaceHolder); 2290 } 2291 } 2292 } 2293 } 2294 try { 2295 mWindowSession.finishDrawing(mWindow); 2296 } catch (RemoteException e) { 2297 } 2298 } 2299 } 2300 2301 private void draw(boolean fullRedrawNeeded) { 2302 Surface surface = mSurface; 2303 if (!surface.isValid()) { 2304 return; 2305 } 2306 2307 if (DEBUG_FPS) { 2308 trackFPS(); 2309 } 2310 2311 if (!sFirstDrawComplete) { 2312 synchronized (sFirstDrawHandlers) { 2313 sFirstDrawComplete = true; 2314 final int count = sFirstDrawHandlers.size(); 2315 for (int i = 0; i< count; i++) { 2316 mHandler.post(sFirstDrawHandlers.get(i)); 2317 } 2318 } 2319 } 2320 2321 scrollToRectOrFocus(null, false); 2322 2323 final AttachInfo attachInfo = mAttachInfo; 2324 if (attachInfo.mViewScrollChanged) { 2325 attachInfo.mViewScrollChanged = false; 2326 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2327 } 2328 2329 int yoff; 2330 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2331 if (animating) { 2332 yoff = mScroller.getCurrY(); 2333 } else { 2334 yoff = mScrollY; 2335 } 2336 if (mCurScrollY != yoff) { 2337 mCurScrollY = yoff; 2338 fullRedrawNeeded = true; 2339 } 2340 2341 final float appScale = attachInfo.mApplicationScale; 2342 final boolean scalingRequired = attachInfo.mScalingRequired; 2343 2344 int resizeAlpha = 0; 2345 if (mResizeBuffer != null) { 2346 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2347 if (deltaTime < mResizeBufferDuration) { 2348 float amt = deltaTime/(float) mResizeBufferDuration; 2349 amt = mResizeInterpolator.getInterpolation(amt); 2350 animating = true; 2351 resizeAlpha = 255 - (int)(amt*255); 2352 } else { 2353 disposeResizeBuffer(); 2354 } 2355 } 2356 2357 final Rect dirty = mDirty; 2358 if (mSurfaceHolder != null) { 2359 // The app owns the surface, we won't draw. 2360 dirty.setEmpty(); 2361 if (animating) { 2362 if (mScroller != null) { 2363 mScroller.abortAnimation(); 2364 } 2365 disposeResizeBuffer(); 2366 } 2367 return; 2368 } 2369 2370 if (fullRedrawNeeded) { 2371 attachInfo.mIgnoreDirtyState = true; 2372 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2373 } 2374 2375 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2376 Log.v(TAG, "Draw " + mView + "/" 2377 + mWindowAttributes.getTitle() 2378 + ": dirty={" + dirty.left + "," + dirty.top 2379 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2380 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2381 appScale + ", width=" + mWidth + ", height=" + mHeight); 2382 } 2383 2384 invalidateDisplayLists(); 2385 2386 attachInfo.mTreeObserver.dispatchOnDraw(); 2387 2388 if (!dirty.isEmpty() || mIsAnimating) { 2389 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2390 // Draw with hardware renderer. 2391 mIsAnimating = false; 2392 mHardwareYOffset = yoff; 2393 mResizeAlpha = resizeAlpha; 2394 2395 mCurrentDirty.set(dirty); 2396 dirty.setEmpty(); 2397 2398 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2399 animating ? null : mCurrentDirty); 2400 } else { 2401 // If we get here with a disabled & requested hardware renderer, something went 2402 // wrong (an invalidate posted right before we destroyed the hardware surface 2403 // for instance) so we should just bail out. Locking the surface with software 2404 // rendering at this point would lock it forever and prevent hardware renderer 2405 // from doing its job when it comes back. 2406 // Before we request a new frame we must however attempt to reinitiliaze the 2407 // hardware renderer if it's in requested state. This would happen after an 2408 // eglTerminate() for instance. 2409 if (attachInfo.mHardwareRenderer != null && 2410 !attachInfo.mHardwareRenderer.isEnabled() && 2411 attachInfo.mHardwareRenderer.isRequested()) { 2412 2413 try { 2414 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2415 mSurface); 2416 } catch (OutOfResourcesException e) { 2417 handleOutOfResourcesException(e); 2418 return; 2419 } 2420 2421 mFullRedrawNeeded = true; 2422 scheduleTraversals(); 2423 return; 2424 } 2425 2426 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2427 return; 2428 } 2429 } 2430 } 2431 2432 if (animating) { 2433 mFullRedrawNeeded = true; 2434 scheduleTraversals(); 2435 } 2436 } 2437 2438 /** 2439 * @return true if drawing was succesfull, false if an error occurred 2440 */ 2441 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2442 boolean scalingRequired, Rect dirty) { 2443 2444 // Draw with software renderer. 2445 Canvas canvas; 2446 try { 2447 int left = dirty.left; 2448 int top = dirty.top; 2449 int right = dirty.right; 2450 int bottom = dirty.bottom; 2451 2452 canvas = mSurface.lockCanvas(dirty); 2453 2454 // The dirty rectangle can be modified by Surface.lockCanvas() 2455 //noinspection ConstantConditions 2456 if (left != dirty.left || top != dirty.top || right != dirty.right || 2457 bottom != dirty.bottom) { 2458 attachInfo.mIgnoreDirtyState = true; 2459 } 2460 2461 // TODO: Do this in native 2462 canvas.setDensity(mDensity); 2463 } catch (Surface.OutOfResourcesException e) { 2464 handleOutOfResourcesException(e); 2465 return false; 2466 } catch (IllegalArgumentException e) { 2467 Log.e(TAG, "Could not lock surface", e); 2468 // Don't assume this is due to out of memory, it could be 2469 // something else, and if it is something else then we could 2470 // kill stuff (or ourself) for no reason. 2471 mLayoutRequested = true; // ask wm for a new surface next time. 2472 return false; 2473 } 2474 2475 try { 2476 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2477 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2478 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2479 //canvas.drawARGB(255, 255, 0, 0); 2480 } 2481 2482 // If this bitmap's format includes an alpha channel, we 2483 // need to clear it before drawing so that the child will 2484 // properly re-composite its drawing on a transparent 2485 // background. This automatically respects the clip/dirty region 2486 // or 2487 // If we are applying an offset, we need to clear the area 2488 // where the offset doesn't appear to avoid having garbage 2489 // left in the blank areas. 2490 if (!canvas.isOpaque() || yoff != 0) { 2491 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2492 } 2493 2494 dirty.setEmpty(); 2495 mIsAnimating = false; 2496 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2497 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2498 2499 if (DEBUG_DRAW) { 2500 Context cxt = mView.getContext(); 2501 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2502 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2503 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2504 } 2505 try { 2506 canvas.translate(0, -yoff); 2507 if (mTranslator != null) { 2508 mTranslator.translateCanvas(canvas); 2509 } 2510 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2511 attachInfo.mSetIgnoreDirtyState = false; 2512 2513 mView.draw(canvas); 2514 2515 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2516 } finally { 2517 if (!attachInfo.mSetIgnoreDirtyState) { 2518 // Only clear the flag if it was not set during the mView.draw() call 2519 attachInfo.mIgnoreDirtyState = false; 2520 } 2521 } 2522 } finally { 2523 try { 2524 surface.unlockCanvasAndPost(canvas); 2525 } catch (IllegalArgumentException e) { 2526 Log.e(TAG, "Could not unlock surface", e); 2527 mLayoutRequested = true; // ask wm for a new surface next time. 2528 //noinspection ReturnInsideFinallyBlock 2529 return false; 2530 } 2531 2532 if (LOCAL_LOGV) { 2533 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2534 } 2535 } 2536 return true; 2537 } 2538 2539 /** 2540 * We want to draw a highlight around the current accessibility focused. 2541 * Since adding a style for all possible view is not a viable option we 2542 * have this specialized drawing method. 2543 * 2544 * Note: We are doing this here to be able to draw the highlight for 2545 * virtual views in addition to real ones. 2546 * 2547 * @param canvas The canvas on which to draw. 2548 */ 2549 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2550 if (!mAttachInfo.mHasWindowFocus) { 2551 return; 2552 } 2553 2554 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2555 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2556 return; 2557 } 2558 2559 final View host = mAccessibilityFocusedHost; 2560 if (host == null || host.mAttachInfo == null) { 2561 return; 2562 } 2563 2564 final Drawable drawable = getAccessibilityFocusedDrawable(); 2565 if (drawable == null) { 2566 return; 2567 } 2568 2569 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2570 final Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2571 if (provider == null) { 2572 host.getBoundsOnScreen(bounds); 2573 } else if (mAccessibilityFocusedVirtualView != null) { 2574 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2575 } else { 2576 return; 2577 } 2578 2579 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2580 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2581 drawable.setBounds(bounds); 2582 drawable.draw(canvas); 2583 } 2584 2585 private Drawable getAccessibilityFocusedDrawable() { 2586 if (mAttachInfo != null) { 2587 // Lazily load the accessibility focus drawable. 2588 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2589 TypedValue value = new TypedValue(); 2590 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2591 R.attr.accessibilityFocusedDrawable, value, true); 2592 if (resolved) { 2593 mAttachInfo.mAccessibilityFocusDrawable = 2594 mView.mContext.getResources().getDrawable(value.resourceId); 2595 } 2596 } 2597 return mAttachInfo.mAccessibilityFocusDrawable; 2598 } 2599 return null; 2600 } 2601 2602 void invalidateDisplayLists() { 2603 final ArrayList<DisplayList> displayLists = mDisplayLists; 2604 final int count = displayLists.size(); 2605 2606 for (int i = 0; i < count; i++) { 2607 final DisplayList displayList = displayLists.get(i); 2608 if (displayList.isDirty()) { 2609 displayList.reset(); 2610 } 2611 } 2612 2613 displayLists.clear(); 2614 } 2615 2616 /** 2617 * @hide 2618 */ 2619 public void setDrawDuringWindowsAnimating(boolean value) { 2620 mDrawDuringWindowsAnimating = value; 2621 if (value) { 2622 handleDispatchDoneAnimating(); 2623 } 2624 } 2625 2626 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2627 final View.AttachInfo attachInfo = mAttachInfo; 2628 final Rect ci = attachInfo.mContentInsets; 2629 final Rect vi = attachInfo.mVisibleInsets; 2630 int scrollY = 0; 2631 boolean handled = false; 2632 2633 if (vi.left > ci.left || vi.top > ci.top 2634 || vi.right > ci.right || vi.bottom > ci.bottom) { 2635 // We'll assume that we aren't going to change the scroll 2636 // offset, since we want to avoid that unless it is actually 2637 // going to make the focus visible... otherwise we scroll 2638 // all over the place. 2639 scrollY = mScrollY; 2640 // We can be called for two different situations: during a draw, 2641 // to update the scroll position if the focus has changed (in which 2642 // case 'rectangle' is null), or in response to a 2643 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2644 // is non-null and we just want to scroll to whatever that 2645 // rectangle is). 2646 final View focus = mView.findFocus(); 2647 if (focus == null) { 2648 return false; 2649 } 2650 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2651 if (focus != lastScrolledFocus) { 2652 // If the focus has changed, then ignore any requests to scroll 2653 // to a rectangle; first we want to make sure the entire focus 2654 // view is visible. 2655 rectangle = null; 2656 } 2657 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2658 + " rectangle=" + rectangle + " ci=" + ci 2659 + " vi=" + vi); 2660 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2661 // Optimization: if the focus hasn't changed since last 2662 // time, and no layout has happened, then just leave things 2663 // as they are. 2664 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2665 + mScrollY + " vi=" + vi.toShortString()); 2666 } else { 2667 // We need to determine if the currently focused view is 2668 // within the visible part of the window and, if not, apply 2669 // a pan so it can be seen. 2670 mLastScrolledFocus = new WeakReference<View>(focus); 2671 mScrollMayChange = false; 2672 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2673 // Try to find the rectangle from the focus view. 2674 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2675 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2676 + mView.getWidth() + " h=" + mView.getHeight() 2677 + " ci=" + ci.toShortString() 2678 + " vi=" + vi.toShortString()); 2679 if (rectangle == null) { 2680 focus.getFocusedRect(mTempRect); 2681 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2682 + ": focusRect=" + mTempRect.toShortString()); 2683 if (mView instanceof ViewGroup) { 2684 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2685 focus, mTempRect); 2686 } 2687 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2688 "Focus in window: focusRect=" 2689 + mTempRect.toShortString() 2690 + " visRect=" + mVisRect.toShortString()); 2691 } else { 2692 mTempRect.set(rectangle); 2693 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2694 "Request scroll to rect: " 2695 + mTempRect.toShortString() 2696 + " visRect=" + mVisRect.toShortString()); 2697 } 2698 if (mTempRect.intersect(mVisRect)) { 2699 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2700 "Focus window visible rect: " 2701 + mTempRect.toShortString()); 2702 if (mTempRect.height() > 2703 (mView.getHeight()-vi.top-vi.bottom)) { 2704 // If the focus simply is not going to fit, then 2705 // best is probably just to leave things as-is. 2706 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2707 "Too tall; leaving scrollY=" + scrollY); 2708 } else if ((mTempRect.top-scrollY) < vi.top) { 2709 scrollY -= vi.top - (mTempRect.top-scrollY); 2710 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2711 "Top covered; scrollY=" + scrollY); 2712 } else if ((mTempRect.bottom-scrollY) 2713 > (mView.getHeight()-vi.bottom)) { 2714 scrollY += (mTempRect.bottom-scrollY) 2715 - (mView.getHeight()-vi.bottom); 2716 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2717 "Bottom covered; scrollY=" + scrollY); 2718 } 2719 handled = true; 2720 } 2721 } 2722 } 2723 } 2724 2725 if (scrollY != mScrollY) { 2726 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2727 + mScrollY + " , new=" + scrollY); 2728 if (!immediate && mResizeBuffer == null) { 2729 if (mScroller == null) { 2730 mScroller = new Scroller(mView.getContext()); 2731 } 2732 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2733 } else if (mScroller != null) { 2734 mScroller.abortAnimation(); 2735 } 2736 mScrollY = scrollY; 2737 } 2738 2739 return handled; 2740 } 2741 2742 /** 2743 * @hide 2744 */ 2745 public View getAccessibilityFocusedHost() { 2746 return mAccessibilityFocusedHost; 2747 } 2748 2749 /** 2750 * @hide 2751 */ 2752 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2753 return mAccessibilityFocusedVirtualView; 2754 } 2755 2756 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2757 // If we have a virtual view with accessibility focus we need 2758 // to clear the focus and invalidate the virtual view bounds. 2759 if (mAccessibilityFocusedVirtualView != null) { 2760 2761 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2762 View focusHost = mAccessibilityFocusedHost; 2763 2764 // Wipe the state of the current accessibility focus since 2765 // the call into the provider to clear accessibility focus 2766 // will fire an accessibility event which will end up calling 2767 // this method and we want to have clean state when this 2768 // invocation happens. 2769 mAccessibilityFocusedHost = null; 2770 mAccessibilityFocusedVirtualView = null; 2771 2772 // Clear accessibility focus on the host after clearing state since 2773 // this method may be reentrant. 2774 focusHost.clearAccessibilityFocusNoCallbacks(); 2775 2776 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2777 if (provider != null) { 2778 // Invalidate the area of the cleared accessibility focus. 2779 focusNode.getBoundsInParent(mTempRect); 2780 focusHost.invalidate(mTempRect); 2781 // Clear accessibility focus in the virtual node. 2782 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2783 focusNode.getSourceNodeId()); 2784 provider.performAction(virtualNodeId, 2785 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2786 } 2787 focusNode.recycle(); 2788 } 2789 if (mAccessibilityFocusedHost != null) { 2790 // Clear accessibility focus in the view. 2791 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2792 } 2793 2794 // Set the new focus host and node. 2795 mAccessibilityFocusedHost = view; 2796 mAccessibilityFocusedVirtualView = node; 2797 } 2798 2799 @Override 2800 public void requestChildFocus(View child, View focused) { 2801 if (DEBUG_INPUT_RESIZE) { 2802 Log.v(TAG, "Request child focus: focus now " + focused); 2803 } 2804 checkThread(); 2805 scheduleTraversals(); 2806 } 2807 2808 @Override 2809 public void clearChildFocus(View child) { 2810 if (DEBUG_INPUT_RESIZE) { 2811 Log.v(TAG, "Clearing child focus"); 2812 } 2813 checkThread(); 2814 scheduleTraversals(); 2815 } 2816 2817 @Override 2818 public ViewParent getParentForAccessibility() { 2819 return null; 2820 } 2821 2822 @Override 2823 public void focusableViewAvailable(View v) { 2824 checkThread(); 2825 if (mView != null) { 2826 if (!mView.hasFocus()) { 2827 v.requestFocus(); 2828 } else { 2829 // the one case where will transfer focus away from the current one 2830 // is if the current view is a view group that prefers to give focus 2831 // to its children first AND the view is a descendant of it. 2832 View focused = mView.findFocus(); 2833 if (focused instanceof ViewGroup) { 2834 ViewGroup group = (ViewGroup) focused; 2835 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2836 && isViewDescendantOf(v, focused)) { 2837 v.requestFocus(); 2838 } 2839 } 2840 } 2841 } 2842 } 2843 2844 @Override 2845 public void recomputeViewAttributes(View child) { 2846 checkThread(); 2847 if (mView == child) { 2848 mAttachInfo.mRecomputeGlobalAttributes = true; 2849 if (!mWillDrawSoon) { 2850 scheduleTraversals(); 2851 } 2852 } 2853 } 2854 2855 void dispatchDetachedFromWindow() { 2856 if (mView != null && mView.mAttachInfo != null) { 2857 if (mAttachInfo.mHardwareRenderer != null && 2858 mAttachInfo.mHardwareRenderer.isEnabled()) { 2859 mAttachInfo.mHardwareRenderer.validate(); 2860 } 2861 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2862 mView.dispatchDetachedFromWindow(); 2863 } 2864 2865 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2866 mAccessibilityManager.removeAccessibilityStateChangeListener( 2867 mAccessibilityInteractionConnectionManager); 2868 removeSendWindowContentChangedCallback(); 2869 2870 destroyHardwareRenderer(); 2871 2872 setAccessibilityFocus(null, null); 2873 2874 mView.assignParent(null); 2875 mView = null; 2876 mAttachInfo.mRootView = null; 2877 2878 mSurface.release(); 2879 2880 if (mInputQueueCallback != null && mInputQueue != null) { 2881 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2882 mInputQueue.dispose(); 2883 mInputQueueCallback = null; 2884 mInputQueue = null; 2885 } 2886 if (mInputEventReceiver != null) { 2887 mInputEventReceiver.dispose(); 2888 mInputEventReceiver = null; 2889 } 2890 try { 2891 mWindowSession.remove(mWindow); 2892 } catch (RemoteException e) { 2893 } 2894 2895 // Dispose the input channel after removing the window so the Window Manager 2896 // doesn't interpret the input channel being closed as an abnormal termination. 2897 if (mInputChannel != null) { 2898 mInputChannel.dispose(); 2899 mInputChannel = null; 2900 } 2901 2902 unscheduleTraversals(); 2903 } 2904 2905 void updateConfiguration(Configuration config, boolean force) { 2906 if (DEBUG_CONFIGURATION) Log.v(TAG, 2907 "Applying new config to window " 2908 + mWindowAttributes.getTitle() 2909 + ": " + config); 2910 2911 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2912 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2913 config = new Configuration(config); 2914 ci.applyToConfiguration(mNoncompatDensity, config); 2915 } 2916 2917 synchronized (sConfigCallbacks) { 2918 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2919 sConfigCallbacks.get(i).onConfigurationChanged(config); 2920 } 2921 } 2922 if (mView != null) { 2923 // At this point the resources have been updated to 2924 // have the most recent config, whatever that is. Use 2925 // the one in them which may be newer. 2926 config = mView.getResources().getConfiguration(); 2927 if (force || mLastConfiguration.diff(config) != 0) { 2928 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2929 final int currentLayoutDirection = config.getLayoutDirection(); 2930 mLastConfiguration.setTo(config); 2931 if (lastLayoutDirection != currentLayoutDirection && 2932 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2933 mView.setLayoutDirection(currentLayoutDirection); 2934 } 2935 mView.dispatchConfigurationChanged(config); 2936 } 2937 } 2938 2939 mFlipControllerFallbackKeys = 2940 mContext.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 2941 } 2942 2943 /** 2944 * Return true if child is an ancestor of parent, (or equal to the parent). 2945 */ 2946 public static boolean isViewDescendantOf(View child, View parent) { 2947 if (child == parent) { 2948 return true; 2949 } 2950 2951 final ViewParent theParent = child.getParent(); 2952 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2953 } 2954 2955 private static void forceLayout(View view) { 2956 view.forceLayout(); 2957 if (view instanceof ViewGroup) { 2958 ViewGroup group = (ViewGroup) view; 2959 final int count = group.getChildCount(); 2960 for (int i = 0; i < count; i++) { 2961 forceLayout(group.getChildAt(i)); 2962 } 2963 } 2964 } 2965 2966 private final static int MSG_INVALIDATE = 1; 2967 private final static int MSG_INVALIDATE_RECT = 2; 2968 private final static int MSG_DIE = 3; 2969 private final static int MSG_RESIZED = 4; 2970 private final static int MSG_RESIZED_REPORT = 5; 2971 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2972 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 2973 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2974 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2975 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2976 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2977 private final static int MSG_CHECK_FOCUS = 13; 2978 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2979 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2980 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2981 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2982 private final static int MSG_UPDATE_CONFIGURATION = 18; 2983 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2984 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2985 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2986 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2987 private final static int MSG_INVALIDATE_WORLD = 23; 2988 private final static int MSG_WINDOW_MOVED = 24; 2989 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2990 2991 final class ViewRootHandler extends Handler { 2992 @Override 2993 public String getMessageName(Message message) { 2994 switch (message.what) { 2995 case MSG_INVALIDATE: 2996 return "MSG_INVALIDATE"; 2997 case MSG_INVALIDATE_RECT: 2998 return "MSG_INVALIDATE_RECT"; 2999 case MSG_DIE: 3000 return "MSG_DIE"; 3001 case MSG_RESIZED: 3002 return "MSG_RESIZED"; 3003 case MSG_RESIZED_REPORT: 3004 return "MSG_RESIZED_REPORT"; 3005 case MSG_WINDOW_FOCUS_CHANGED: 3006 return "MSG_WINDOW_FOCUS_CHANGED"; 3007 case MSG_DISPATCH_INPUT_EVENT: 3008 return "MSG_DISPATCH_INPUT_EVENT"; 3009 case MSG_DISPATCH_APP_VISIBILITY: 3010 return "MSG_DISPATCH_APP_VISIBILITY"; 3011 case MSG_DISPATCH_GET_NEW_SURFACE: 3012 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3013 case MSG_DISPATCH_KEY_FROM_IME: 3014 return "MSG_DISPATCH_KEY_FROM_IME"; 3015 case MSG_FINISH_INPUT_CONNECTION: 3016 return "MSG_FINISH_INPUT_CONNECTION"; 3017 case MSG_CHECK_FOCUS: 3018 return "MSG_CHECK_FOCUS"; 3019 case MSG_CLOSE_SYSTEM_DIALOGS: 3020 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3021 case MSG_DISPATCH_DRAG_EVENT: 3022 return "MSG_DISPATCH_DRAG_EVENT"; 3023 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3024 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3025 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3026 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3027 case MSG_UPDATE_CONFIGURATION: 3028 return "MSG_UPDATE_CONFIGURATION"; 3029 case MSG_PROCESS_INPUT_EVENTS: 3030 return "MSG_PROCESS_INPUT_EVENTS"; 3031 case MSG_DISPATCH_SCREEN_STATE: 3032 return "MSG_DISPATCH_SCREEN_STATE"; 3033 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3034 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3035 case MSG_DISPATCH_DONE_ANIMATING: 3036 return "MSG_DISPATCH_DONE_ANIMATING"; 3037 case MSG_WINDOW_MOVED: 3038 return "MSG_WINDOW_MOVED"; 3039 case MSG_FLUSH_LAYER_UPDATES: 3040 return "MSG_FLUSH_LAYER_UPDATES"; 3041 } 3042 return super.getMessageName(message); 3043 } 3044 3045 @Override 3046 public void handleMessage(Message msg) { 3047 switch (msg.what) { 3048 case MSG_INVALIDATE: 3049 ((View) msg.obj).invalidate(); 3050 break; 3051 case MSG_INVALIDATE_RECT: 3052 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3053 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3054 info.recycle(); 3055 break; 3056 case MSG_PROCESS_INPUT_EVENTS: 3057 mProcessInputEventsScheduled = false; 3058 doProcessInputEvents(); 3059 break; 3060 case MSG_DISPATCH_APP_VISIBILITY: 3061 handleAppVisibility(msg.arg1 != 0); 3062 break; 3063 case MSG_DISPATCH_GET_NEW_SURFACE: 3064 handleGetNewSurface(); 3065 break; 3066 case MSG_RESIZED: { 3067 // Recycled in the fall through... 3068 SomeArgs args = (SomeArgs) msg.obj; 3069 if (mWinFrame.equals(args.arg1) 3070 && mPendingOverscanInsets.equals(args.arg5) 3071 && mPendingContentInsets.equals(args.arg2) 3072 && mPendingVisibleInsets.equals(args.arg3) 3073 && args.arg4 == null) { 3074 break; 3075 } 3076 } // fall through... 3077 case MSG_RESIZED_REPORT: 3078 if (mAdded) { 3079 SomeArgs args = (SomeArgs) msg.obj; 3080 3081 Configuration config = (Configuration) args.arg4; 3082 if (config != null) { 3083 updateConfiguration(config, false); 3084 } 3085 3086 mWinFrame.set((Rect) args.arg1); 3087 mPendingOverscanInsets.set((Rect) args.arg5); 3088 mPendingContentInsets.set((Rect) args.arg2); 3089 mPendingVisibleInsets.set((Rect) args.arg3); 3090 3091 args.recycle(); 3092 3093 if (msg.what == MSG_RESIZED_REPORT) { 3094 mReportNextDraw = true; 3095 } 3096 3097 if (mView != null) { 3098 forceLayout(mView); 3099 } 3100 3101 requestLayout(); 3102 } 3103 break; 3104 case MSG_WINDOW_MOVED: 3105 if (mAdded) { 3106 final int w = mWinFrame.width(); 3107 final int h = mWinFrame.height(); 3108 final int l = msg.arg1; 3109 final int t = msg.arg2; 3110 mWinFrame.left = l; 3111 mWinFrame.right = l + w; 3112 mWinFrame.top = t; 3113 mWinFrame.bottom = t + h; 3114 3115 if (mView != null) { 3116 forceLayout(mView); 3117 } 3118 requestLayout(); 3119 } 3120 break; 3121 case MSG_WINDOW_FOCUS_CHANGED: { 3122 if (mAdded) { 3123 boolean hasWindowFocus = msg.arg1 != 0; 3124 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3125 3126 profileRendering(hasWindowFocus); 3127 3128 if (hasWindowFocus) { 3129 boolean inTouchMode = msg.arg2 != 0; 3130 ensureTouchModeLocally(inTouchMode); 3131 3132 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3133 mFullRedrawNeeded = true; 3134 try { 3135 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3136 mWidth, mHeight, mSurface); 3137 } catch (OutOfResourcesException e) { 3138 Log.e(TAG, "OutOfResourcesException locking surface", e); 3139 try { 3140 if (!mWindowSession.outOfMemory(mWindow)) { 3141 Slog.w(TAG, "No processes killed for memory; killing self"); 3142 Process.killProcess(Process.myPid()); 3143 } 3144 } catch (RemoteException ex) { 3145 } 3146 // Retry in a bit. 3147 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3148 return; 3149 } 3150 } 3151 } 3152 3153 mLastWasImTarget = WindowManager.LayoutParams 3154 .mayUseInputMethod(mWindowAttributes.flags); 3155 3156 InputMethodManager imm = InputMethodManager.peekInstance(); 3157 if (mView != null) { 3158 if (hasWindowFocus && imm != null && mLastWasImTarget && 3159 !isInLocalFocusMode()) { 3160 imm.startGettingWindowFocus(mView); 3161 } 3162 mAttachInfo.mKeyDispatchState.reset(); 3163 mView.dispatchWindowFocusChanged(hasWindowFocus); 3164 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3165 } 3166 3167 // Note: must be done after the focus change callbacks, 3168 // so all of the view state is set up correctly. 3169 if (hasWindowFocus) { 3170 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3171 imm.onWindowFocus(mView, mView.findFocus(), 3172 mWindowAttributes.softInputMode, 3173 !mHasHadWindowFocus, mWindowAttributes.flags); 3174 } 3175 // Clear the forward bit. We can just do this directly, since 3176 // the window manager doesn't care about it. 3177 mWindowAttributes.softInputMode &= 3178 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3179 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3180 .softInputMode &= 3181 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3182 mHasHadWindowFocus = true; 3183 } 3184 3185 if (mView != null && mAccessibilityManager.isEnabled()) { 3186 if (hasWindowFocus) { 3187 mView.sendAccessibilityEvent( 3188 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3189 } 3190 } 3191 } 3192 } break; 3193 case MSG_DIE: 3194 doDie(); 3195 break; 3196 case MSG_DISPATCH_INPUT_EVENT: { 3197 InputEvent event = (InputEvent)msg.obj; 3198 enqueueInputEvent(event, null, 0, true); 3199 } break; 3200 case MSG_DISPATCH_KEY_FROM_IME: { 3201 if (LOCAL_LOGV) Log.v( 3202 TAG, "Dispatching key " 3203 + msg.obj + " from IME to " + mView); 3204 KeyEvent event = (KeyEvent)msg.obj; 3205 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3206 // The IME is trying to say this event is from the 3207 // system! Bad bad bad! 3208 //noinspection UnusedAssignment 3209 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3210 } 3211 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3212 } break; 3213 case MSG_FINISH_INPUT_CONNECTION: { 3214 InputMethodManager imm = InputMethodManager.peekInstance(); 3215 if (imm != null) { 3216 imm.reportFinishInputConnection((InputConnection)msg.obj); 3217 } 3218 } break; 3219 case MSG_CHECK_FOCUS: { 3220 InputMethodManager imm = InputMethodManager.peekInstance(); 3221 if (imm != null) { 3222 imm.checkFocus(); 3223 } 3224 } break; 3225 case MSG_CLOSE_SYSTEM_DIALOGS: { 3226 if (mView != null) { 3227 mView.onCloseSystemDialogs((String)msg.obj); 3228 } 3229 } break; 3230 case MSG_DISPATCH_DRAG_EVENT: 3231 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3232 DragEvent event = (DragEvent)msg.obj; 3233 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3234 handleDragEvent(event); 3235 } break; 3236 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3237 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3238 } break; 3239 case MSG_UPDATE_CONFIGURATION: { 3240 Configuration config = (Configuration)msg.obj; 3241 if (config.isOtherSeqNewer(mLastConfiguration)) { 3242 config = mLastConfiguration; 3243 } 3244 updateConfiguration(config, false); 3245 } break; 3246 case MSG_DISPATCH_SCREEN_STATE: { 3247 if (mView != null) { 3248 handleScreenStateChange(msg.arg1 == 1); 3249 } 3250 } break; 3251 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3252 setAccessibilityFocus(null, null); 3253 } break; 3254 case MSG_DISPATCH_DONE_ANIMATING: { 3255 handleDispatchDoneAnimating(); 3256 } break; 3257 case MSG_INVALIDATE_WORLD: { 3258 if (mView != null) { 3259 invalidateWorld(mView); 3260 } 3261 } break; 3262 case MSG_FLUSH_LAYER_UPDATES: { 3263 flushHardwareLayerUpdates(); 3264 } break; 3265 } 3266 } 3267 } 3268 3269 final ViewRootHandler mHandler = new ViewRootHandler(); 3270 3271 /** 3272 * Something in the current window tells us we need to change the touch mode. For 3273 * example, we are not in touch mode, and the user touches the screen. 3274 * 3275 * If the touch mode has changed, tell the window manager, and handle it locally. 3276 * 3277 * @param inTouchMode Whether we want to be in touch mode. 3278 * @return True if the touch mode changed and focus changed was changed as a result 3279 */ 3280 boolean ensureTouchMode(boolean inTouchMode) { 3281 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3282 + "touch mode is " + mAttachInfo.mInTouchMode); 3283 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3284 3285 // tell the window manager 3286 try { 3287 if (!isInLocalFocusMode()) { 3288 mWindowSession.setInTouchMode(inTouchMode); 3289 } 3290 } catch (RemoteException e) { 3291 throw new RuntimeException(e); 3292 } 3293 3294 // handle the change 3295 return ensureTouchModeLocally(inTouchMode); 3296 } 3297 3298 /** 3299 * Ensure that the touch mode for this window is set, and if it is changing, 3300 * take the appropriate action. 3301 * @param inTouchMode Whether we want to be in touch mode. 3302 * @return True if the touch mode changed and focus changed was changed as a result 3303 */ 3304 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3305 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3306 + "touch mode is " + mAttachInfo.mInTouchMode); 3307 3308 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3309 3310 mAttachInfo.mInTouchMode = inTouchMode; 3311 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3312 3313 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3314 } 3315 3316 private boolean enterTouchMode() { 3317 if (mView != null && mView.hasFocus()) { 3318 // note: not relying on mFocusedView here because this could 3319 // be when the window is first being added, and mFocused isn't 3320 // set yet. 3321 final View focused = mView.findFocus(); 3322 if (focused != null && !focused.isFocusableInTouchMode()) { 3323 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3324 if (ancestorToTakeFocus != null) { 3325 // there is an ancestor that wants focus after its 3326 // descendants that is focusable in touch mode.. give it 3327 // focus 3328 return ancestorToTakeFocus.requestFocus(); 3329 } else { 3330 // There's nothing to focus. Clear and propagate through the 3331 // hierarchy, but don't attempt to place new focus. 3332 focused.clearFocusInternal(true, false); 3333 return true; 3334 } 3335 } 3336 } 3337 return false; 3338 } 3339 3340 /** 3341 * Find an ancestor of focused that wants focus after its descendants and is 3342 * focusable in touch mode. 3343 * @param focused The currently focused view. 3344 * @return An appropriate view, or null if no such view exists. 3345 */ 3346 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3347 ViewParent parent = focused.getParent(); 3348 while (parent instanceof ViewGroup) { 3349 final ViewGroup vgParent = (ViewGroup) parent; 3350 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3351 && vgParent.isFocusableInTouchMode()) { 3352 return vgParent; 3353 } 3354 if (vgParent.isRootNamespace()) { 3355 return null; 3356 } else { 3357 parent = vgParent.getParent(); 3358 } 3359 } 3360 return null; 3361 } 3362 3363 private boolean leaveTouchMode() { 3364 if (mView != null) { 3365 if (mView.hasFocus()) { 3366 View focusedView = mView.findFocus(); 3367 if (!(focusedView instanceof ViewGroup)) { 3368 // some view has focus, let it keep it 3369 return false; 3370 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3371 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3372 // some view group has focus, and doesn't prefer its children 3373 // over itself for focus, so let them keep it. 3374 return false; 3375 } 3376 } 3377 3378 // find the best view to give focus to in this brave new non-touch-mode 3379 // world 3380 final View focused = focusSearch(null, View.FOCUS_DOWN); 3381 if (focused != null) { 3382 return focused.requestFocus(View.FOCUS_DOWN); 3383 } 3384 } 3385 return false; 3386 } 3387 3388 /** 3389 * Base class for implementing a stage in the chain of responsibility 3390 * for processing input events. 3391 * <p> 3392 * Events are delivered to the stage by the {@link #deliver} method. The stage 3393 * then has the choice of finishing the event or forwarding it to the next stage. 3394 * </p> 3395 */ 3396 abstract class InputStage { 3397 private final InputStage mNext; 3398 3399 protected static final int FORWARD = 0; 3400 protected static final int FINISH_HANDLED = 1; 3401 protected static final int FINISH_NOT_HANDLED = 2; 3402 3403 /** 3404 * Creates an input stage. 3405 * @param next The next stage to which events should be forwarded. 3406 */ 3407 public InputStage(InputStage next) { 3408 mNext = next; 3409 } 3410 3411 /** 3412 * Delivers an event to be processed. 3413 */ 3414 public final void deliver(QueuedInputEvent q) { 3415 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3416 forward(q); 3417 } else if (shouldDropInputEvent(q)) { 3418 finish(q, false); 3419 } else { 3420 apply(q, onProcess(q)); 3421 } 3422 } 3423 3424 /** 3425 * Marks the the input event as finished then forwards it to the next stage. 3426 */ 3427 protected void finish(QueuedInputEvent q, boolean handled) { 3428 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3429 if (handled) { 3430 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3431 } 3432 forward(q); 3433 } 3434 3435 /** 3436 * Forwards the event to the next stage. 3437 */ 3438 protected void forward(QueuedInputEvent q) { 3439 onDeliverToNext(q); 3440 } 3441 3442 /** 3443 * Applies a result code from {@link #onProcess} to the specified event. 3444 */ 3445 protected void apply(QueuedInputEvent q, int result) { 3446 if (result == FORWARD) { 3447 forward(q); 3448 } else if (result == FINISH_HANDLED) { 3449 finish(q, true); 3450 } else if (result == FINISH_NOT_HANDLED) { 3451 finish(q, false); 3452 } else { 3453 throw new IllegalArgumentException("Invalid result: " + result); 3454 } 3455 } 3456 3457 /** 3458 * Called when an event is ready to be processed. 3459 * @return A result code indicating how the event was handled. 3460 */ 3461 protected int onProcess(QueuedInputEvent q) { 3462 return FORWARD; 3463 } 3464 3465 /** 3466 * Called when an event is being delivered to the next stage. 3467 */ 3468 protected void onDeliverToNext(QueuedInputEvent q) { 3469 if (mNext != null) { 3470 mNext.deliver(q); 3471 } else { 3472 finishInputEvent(q); 3473 } 3474 } 3475 3476 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3477 if (mView == null || !mAdded) { 3478 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3479 return true; 3480 } else if (!mAttachInfo.mHasWindowFocus && 3481 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3482 !isTerminalInputEvent(q.mEvent)) { 3483 // If this is a focused event and the window doesn't currently have input focus, 3484 // then drop this event. This could be an event that came back from the previous 3485 // stage but the window has lost focus in the meantime. 3486 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3487 return true; 3488 } 3489 return false; 3490 } 3491 3492 void dump(String prefix, PrintWriter writer) { 3493 if (mNext != null) { 3494 mNext.dump(prefix, writer); 3495 } 3496 } 3497 } 3498 3499 /** 3500 * Base class for implementing an input pipeline stage that supports 3501 * asynchronous and out-of-order processing of input events. 3502 * <p> 3503 * In addition to what a normal input stage can do, an asynchronous 3504 * input stage may also defer an input event that has been delivered to it 3505 * and finish or forward it later. 3506 * </p> 3507 */ 3508 abstract class AsyncInputStage extends InputStage { 3509 private final String mTraceCounter; 3510 3511 private QueuedInputEvent mQueueHead; 3512 private QueuedInputEvent mQueueTail; 3513 private int mQueueLength; 3514 3515 protected static final int DEFER = 3; 3516 3517 /** 3518 * Creates an asynchronous input stage. 3519 * @param next The next stage to which events should be forwarded. 3520 * @param traceCounter The name of a counter to record the size of 3521 * the queue of pending events. 3522 */ 3523 public AsyncInputStage(InputStage next, String traceCounter) { 3524 super(next); 3525 mTraceCounter = traceCounter; 3526 } 3527 3528 /** 3529 * Marks the event as deferred, which is to say that it will be handled 3530 * asynchronously. The caller is responsible for calling {@link #forward} 3531 * or {@link #finish} later when it is done handling the event. 3532 */ 3533 protected void defer(QueuedInputEvent q) { 3534 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3535 enqueue(q); 3536 } 3537 3538 @Override 3539 protected void forward(QueuedInputEvent q) { 3540 // Clear the deferred flag. 3541 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3542 3543 // Fast path if the queue is empty. 3544 QueuedInputEvent curr = mQueueHead; 3545 if (curr == null) { 3546 super.forward(q); 3547 return; 3548 } 3549 3550 // Determine whether the event must be serialized behind any others 3551 // before it can be delivered to the next stage. This is done because 3552 // deferred events might be handled out of order by the stage. 3553 final int deviceId = q.mEvent.getDeviceId(); 3554 QueuedInputEvent prev = null; 3555 boolean blocked = false; 3556 while (curr != null && curr != q) { 3557 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3558 blocked = true; 3559 } 3560 prev = curr; 3561 curr = curr.mNext; 3562 } 3563 3564 // If the event is blocked, then leave it in the queue to be delivered later. 3565 // Note that the event might not yet be in the queue if it was not previously 3566 // deferred so we will enqueue it if needed. 3567 if (blocked) { 3568 if (curr == null) { 3569 enqueue(q); 3570 } 3571 return; 3572 } 3573 3574 // The event is not blocked. Deliver it immediately. 3575 if (curr != null) { 3576 curr = curr.mNext; 3577 dequeue(q, prev); 3578 } 3579 super.forward(q); 3580 3581 // Dequeuing this event may have unblocked successors. Deliver them. 3582 while (curr != null) { 3583 if (deviceId == curr.mEvent.getDeviceId()) { 3584 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3585 break; 3586 } 3587 QueuedInputEvent next = curr.mNext; 3588 dequeue(curr, prev); 3589 super.forward(curr); 3590 curr = next; 3591 } else { 3592 prev = curr; 3593 curr = curr.mNext; 3594 } 3595 } 3596 } 3597 3598 @Override 3599 protected void apply(QueuedInputEvent q, int result) { 3600 if (result == DEFER) { 3601 defer(q); 3602 } else { 3603 super.apply(q, result); 3604 } 3605 } 3606 3607 private void enqueue(QueuedInputEvent q) { 3608 if (mQueueTail == null) { 3609 mQueueHead = q; 3610 mQueueTail = q; 3611 } else { 3612 mQueueTail.mNext = q; 3613 mQueueTail = q; 3614 } 3615 3616 mQueueLength += 1; 3617 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3618 } 3619 3620 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3621 if (prev == null) { 3622 mQueueHead = q.mNext; 3623 } else { 3624 prev.mNext = q.mNext; 3625 } 3626 if (mQueueTail == q) { 3627 mQueueTail = prev; 3628 } 3629 q.mNext = null; 3630 3631 mQueueLength -= 1; 3632 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3633 } 3634 3635 @Override 3636 void dump(String prefix, PrintWriter writer) { 3637 writer.print(prefix); 3638 writer.print(getClass().getName()); 3639 writer.print(": mQueueLength="); 3640 writer.println(mQueueLength); 3641 3642 super.dump(prefix, writer); 3643 } 3644 } 3645 3646 /** 3647 * Delivers pre-ime input events to a native activity. 3648 * Does not support pointer events. 3649 */ 3650 final class NativePreImeInputStage extends AsyncInputStage 3651 implements InputQueue.FinishedInputEventCallback { 3652 public NativePreImeInputStage(InputStage next, String traceCounter) { 3653 super(next, traceCounter); 3654 } 3655 3656 @Override 3657 protected int onProcess(QueuedInputEvent q) { 3658 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3659 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3660 return DEFER; 3661 } 3662 return FORWARD; 3663 } 3664 3665 @Override 3666 public void onFinishedInputEvent(Object token, boolean handled) { 3667 QueuedInputEvent q = (QueuedInputEvent)token; 3668 if (handled) { 3669 finish(q, true); 3670 return; 3671 } 3672 forward(q); 3673 } 3674 } 3675 3676 /** 3677 * Delivers pre-ime input events to the view hierarchy. 3678 * Does not support pointer events. 3679 */ 3680 final class ViewPreImeInputStage extends InputStage { 3681 public ViewPreImeInputStage(InputStage next) { 3682 super(next); 3683 } 3684 3685 @Override 3686 protected int onProcess(QueuedInputEvent q) { 3687 if (q.mEvent instanceof KeyEvent) { 3688 return processKeyEvent(q); 3689 } 3690 return FORWARD; 3691 } 3692 3693 private int processKeyEvent(QueuedInputEvent q) { 3694 final KeyEvent event = (KeyEvent)q.mEvent; 3695 if (mView.dispatchKeyEventPreIme(event)) { 3696 return FINISH_HANDLED; 3697 } 3698 return FORWARD; 3699 } 3700 } 3701 3702 /** 3703 * Delivers input events to the ime. 3704 * Does not support pointer events. 3705 */ 3706 final class ImeInputStage extends AsyncInputStage 3707 implements InputMethodManager.FinishedInputEventCallback { 3708 public ImeInputStage(InputStage next, String traceCounter) { 3709 super(next, traceCounter); 3710 } 3711 3712 @Override 3713 protected int onProcess(QueuedInputEvent q) { 3714 if (mLastWasImTarget && !isInLocalFocusMode()) { 3715 InputMethodManager imm = InputMethodManager.peekInstance(); 3716 if (imm != null) { 3717 final InputEvent event = q.mEvent; 3718 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3719 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3720 if (result == InputMethodManager.DISPATCH_HANDLED) { 3721 return FINISH_HANDLED; 3722 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3723 return FINISH_NOT_HANDLED; 3724 } else { 3725 return DEFER; // callback will be invoked later 3726 } 3727 } 3728 } 3729 return FORWARD; 3730 } 3731 3732 @Override 3733 public void onFinishedInputEvent(Object token, boolean handled) { 3734 QueuedInputEvent q = (QueuedInputEvent)token; 3735 if (handled) { 3736 finish(q, true); 3737 return; 3738 } 3739 forward(q); 3740 } 3741 } 3742 3743 /** 3744 * Performs early processing of post-ime input events. 3745 */ 3746 final class EarlyPostImeInputStage extends InputStage { 3747 public EarlyPostImeInputStage(InputStage next) { 3748 super(next); 3749 } 3750 3751 @Override 3752 protected int onProcess(QueuedInputEvent q) { 3753 if (q.mEvent instanceof KeyEvent) { 3754 return processKeyEvent(q); 3755 } else { 3756 final int source = q.mEvent.getSource(); 3757 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3758 return processPointerEvent(q); 3759 } 3760 } 3761 return FORWARD; 3762 } 3763 3764 private int processKeyEvent(QueuedInputEvent q) { 3765 final KeyEvent event = (KeyEvent)q.mEvent; 3766 3767 // If the key's purpose is to exit touch mode then we consume it 3768 // and consider it handled. 3769 if (checkForLeavingTouchModeAndConsume(event)) { 3770 return FINISH_HANDLED; 3771 } 3772 3773 // Make sure the fallback event policy sees all keys that will be 3774 // delivered to the view hierarchy. 3775 mFallbackEventHandler.preDispatchKeyEvent(event); 3776 return FORWARD; 3777 } 3778 3779 private int processPointerEvent(QueuedInputEvent q) { 3780 final MotionEvent event = (MotionEvent)q.mEvent; 3781 3782 // Translate the pointer event for compatibility, if needed. 3783 if (mTranslator != null) { 3784 mTranslator.translateEventInScreenToAppWindow(event); 3785 } 3786 3787 // Enter touch mode on down or scroll. 3788 final int action = event.getAction(); 3789 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3790 ensureTouchMode(true); 3791 } 3792 3793 // Offset the scroll position. 3794 if (mCurScrollY != 0) { 3795 event.offsetLocation(0, mCurScrollY); 3796 } 3797 3798 // Remember the touch position for possible drag-initiation. 3799 if (event.isTouchEvent()) { 3800 mLastTouchPoint.x = event.getRawX(); 3801 mLastTouchPoint.y = event.getRawY(); 3802 } 3803 return FORWARD; 3804 } 3805 } 3806 3807 /** 3808 * Delivers post-ime input events to a native activity. 3809 */ 3810 final class NativePostImeInputStage extends AsyncInputStage 3811 implements InputQueue.FinishedInputEventCallback { 3812 public NativePostImeInputStage(InputStage next, String traceCounter) { 3813 super(next, traceCounter); 3814 } 3815 3816 @Override 3817 protected int onProcess(QueuedInputEvent q) { 3818 if (mInputQueue != null) { 3819 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3820 return DEFER; 3821 } 3822 return FORWARD; 3823 } 3824 3825 @Override 3826 public void onFinishedInputEvent(Object token, boolean handled) { 3827 QueuedInputEvent q = (QueuedInputEvent)token; 3828 if (handled) { 3829 finish(q, true); 3830 return; 3831 } 3832 forward(q); 3833 } 3834 } 3835 3836 /** 3837 * Delivers post-ime input events to the view hierarchy. 3838 */ 3839 final class ViewPostImeInputStage extends InputStage { 3840 public ViewPostImeInputStage(InputStage next) { 3841 super(next); 3842 } 3843 3844 @Override 3845 protected int onProcess(QueuedInputEvent q) { 3846 if (q.mEvent instanceof KeyEvent) { 3847 return processKeyEvent(q); 3848 } else { 3849 // If delivering a new non-key event, make sure the window is 3850 // now allowed to start updating. 3851 handleDispatchDoneAnimating(); 3852 final int source = q.mEvent.getSource(); 3853 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3854 return processPointerEvent(q); 3855 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3856 return processTrackballEvent(q); 3857 } else { 3858 return processGenericMotionEvent(q); 3859 } 3860 } 3861 } 3862 3863 private int processKeyEvent(QueuedInputEvent q) { 3864 final KeyEvent event = (KeyEvent)q.mEvent; 3865 3866 if (event.getAction() != KeyEvent.ACTION_UP) { 3867 // If delivering a new key event, make sure the window is 3868 // now allowed to start updating. 3869 handleDispatchDoneAnimating(); 3870 } 3871 3872 // Deliver the key to the view hierarchy. 3873 if (mView.dispatchKeyEvent(event)) { 3874 return FINISH_HANDLED; 3875 } 3876 3877 if (shouldDropInputEvent(q)) { 3878 return FINISH_NOT_HANDLED; 3879 } 3880 3881 // If the Control modifier is held, try to interpret the key as a shortcut. 3882 if (event.getAction() == KeyEvent.ACTION_DOWN 3883 && event.isCtrlPressed() 3884 && event.getRepeatCount() == 0 3885 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3886 if (mView.dispatchKeyShortcutEvent(event)) { 3887 return FINISH_HANDLED; 3888 } 3889 if (shouldDropInputEvent(q)) { 3890 return FINISH_NOT_HANDLED; 3891 } 3892 } 3893 3894 // Apply the fallback event policy. 3895 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3896 return FINISH_HANDLED; 3897 } 3898 if (shouldDropInputEvent(q)) { 3899 return FINISH_NOT_HANDLED; 3900 } 3901 3902 // Handle automatic focus changes. 3903 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3904 int direction = 0; 3905 switch (event.getKeyCode()) { 3906 case KeyEvent.KEYCODE_DPAD_LEFT: 3907 if (event.hasNoModifiers()) { 3908 direction = View.FOCUS_LEFT; 3909 } 3910 break; 3911 case KeyEvent.KEYCODE_DPAD_RIGHT: 3912 if (event.hasNoModifiers()) { 3913 direction = View.FOCUS_RIGHT; 3914 } 3915 break; 3916 case KeyEvent.KEYCODE_DPAD_UP: 3917 if (event.hasNoModifiers()) { 3918 direction = View.FOCUS_UP; 3919 } 3920 break; 3921 case KeyEvent.KEYCODE_DPAD_DOWN: 3922 if (event.hasNoModifiers()) { 3923 direction = View.FOCUS_DOWN; 3924 } 3925 break; 3926 case KeyEvent.KEYCODE_TAB: 3927 if (event.hasNoModifiers()) { 3928 direction = View.FOCUS_FORWARD; 3929 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3930 direction = View.FOCUS_BACKWARD; 3931 } 3932 break; 3933 } 3934 if (direction != 0) { 3935 View focused = mView.findFocus(); 3936 if (focused != null) { 3937 View v = focused.focusSearch(direction); 3938 if (v != null && v != focused) { 3939 // do the math the get the interesting rect 3940 // of previous focused into the coord system of 3941 // newly focused view 3942 focused.getFocusedRect(mTempRect); 3943 if (mView instanceof ViewGroup) { 3944 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3945 focused, mTempRect); 3946 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3947 v, mTempRect); 3948 } 3949 if (v.requestFocus(direction, mTempRect)) { 3950 playSoundEffect(SoundEffectConstants 3951 .getContantForFocusDirection(direction)); 3952 return FINISH_HANDLED; 3953 } 3954 } 3955 3956 // Give the focused view a last chance to handle the dpad key. 3957 if (mView.dispatchUnhandledMove(focused, direction)) { 3958 return FINISH_HANDLED; 3959 } 3960 } else { 3961 // find the best view to give focus to in this non-touch-mode with no-focus 3962 View v = focusSearch(null, direction); 3963 if (v != null && v.requestFocus(direction)) { 3964 return FINISH_HANDLED; 3965 } 3966 } 3967 } 3968 } 3969 return FORWARD; 3970 } 3971 3972 private int processPointerEvent(QueuedInputEvent q) { 3973 final MotionEvent event = (MotionEvent)q.mEvent; 3974 3975 if (mView.dispatchPointerEvent(event)) { 3976 return FINISH_HANDLED; 3977 } 3978 return FORWARD; 3979 } 3980 3981 private int processTrackballEvent(QueuedInputEvent q) { 3982 final MotionEvent event = (MotionEvent)q.mEvent; 3983 3984 if (mView.dispatchTrackballEvent(event)) { 3985 return FINISH_HANDLED; 3986 } 3987 return FORWARD; 3988 } 3989 3990 private int processGenericMotionEvent(QueuedInputEvent q) { 3991 final MotionEvent event = (MotionEvent)q.mEvent; 3992 3993 // Deliver the event to the view. 3994 if (mView.dispatchGenericMotionEvent(event)) { 3995 return FINISH_HANDLED; 3996 } 3997 return FORWARD; 3998 } 3999 } 4000 4001 /** 4002 * Performs synthesis of new input events from unhandled input events. 4003 */ 4004 final class SyntheticInputStage extends InputStage { 4005 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4006 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4007 private final SyntheticTouchNavigationHandler mTouchNavigation = 4008 new SyntheticTouchNavigationHandler(); 4009 private final SyntheticKeyHandler mKeys = new SyntheticKeyHandler(); 4010 4011 public SyntheticInputStage() { 4012 super(null); 4013 } 4014 4015 @Override 4016 protected int onProcess(QueuedInputEvent q) { 4017 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4018 if (q.mEvent instanceof MotionEvent) { 4019 final MotionEvent event = (MotionEvent)q.mEvent; 4020 final int source = event.getSource(); 4021 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4022 mTrackball.process(event); 4023 return FINISH_HANDLED; 4024 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4025 mJoystick.process(event); 4026 return FINISH_HANDLED; 4027 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4028 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4029 mTouchNavigation.process(event); 4030 return FINISH_HANDLED; 4031 } 4032 } else if (q.mEvent instanceof KeyEvent) { 4033 if (mKeys.process((KeyEvent) q.mEvent)) { 4034 return FINISH_HANDLED; 4035 } 4036 } 4037 4038 return FORWARD; 4039 } 4040 4041 @Override 4042 protected void onDeliverToNext(QueuedInputEvent q) { 4043 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4044 // Cancel related synthetic events if any prior stage has handled the event. 4045 if (q.mEvent instanceof MotionEvent) { 4046 final MotionEvent event = (MotionEvent)q.mEvent; 4047 final int source = event.getSource(); 4048 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4049 mTrackball.cancel(event); 4050 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4051 mJoystick.cancel(event); 4052 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4053 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4054 mTouchNavigation.cancel(event); 4055 } 4056 } 4057 } 4058 super.onDeliverToNext(q); 4059 } 4060 } 4061 4062 /** 4063 * Creates dpad events from unhandled trackball movements. 4064 */ 4065 final class SyntheticTrackballHandler { 4066 private final TrackballAxis mX = new TrackballAxis(); 4067 private final TrackballAxis mY = new TrackballAxis(); 4068 private long mLastTime; 4069 4070 public void process(MotionEvent event) { 4071 // Translate the trackball event into DPAD keys and try to deliver those. 4072 long curTime = SystemClock.uptimeMillis(); 4073 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4074 // It has been too long since the last movement, 4075 // so restart at the beginning. 4076 mX.reset(0); 4077 mY.reset(0); 4078 mLastTime = curTime; 4079 } 4080 4081 final int action = event.getAction(); 4082 final int metaState = event.getMetaState(); 4083 switch (action) { 4084 case MotionEvent.ACTION_DOWN: 4085 mX.reset(2); 4086 mY.reset(2); 4087 enqueueInputEvent(new KeyEvent(curTime, curTime, 4088 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4089 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4090 InputDevice.SOURCE_KEYBOARD)); 4091 break; 4092 case MotionEvent.ACTION_UP: 4093 mX.reset(2); 4094 mY.reset(2); 4095 enqueueInputEvent(new KeyEvent(curTime, curTime, 4096 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4097 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4098 InputDevice.SOURCE_KEYBOARD)); 4099 break; 4100 } 4101 4102 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4103 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4104 + " move=" + event.getX() 4105 + " / Y=" + mY.position + " step=" 4106 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4107 + " move=" + event.getY()); 4108 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4109 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4110 4111 // Generate DPAD events based on the trackball movement. 4112 // We pick the axis that has moved the most as the direction of 4113 // the DPAD. When we generate DPAD events for one axis, then the 4114 // other axis is reset -- we don't want to perform DPAD jumps due 4115 // to slight movements in the trackball when making major movements 4116 // along the other axis. 4117 int keycode = 0; 4118 int movement = 0; 4119 float accel = 1; 4120 if (xOff > yOff) { 4121 movement = mX.generate(); 4122 if (movement != 0) { 4123 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4124 : KeyEvent.KEYCODE_DPAD_LEFT; 4125 accel = mX.acceleration; 4126 mY.reset(2); 4127 } 4128 } else if (yOff > 0) { 4129 movement = mY.generate(); 4130 if (movement != 0) { 4131 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4132 : KeyEvent.KEYCODE_DPAD_UP; 4133 accel = mY.acceleration; 4134 mX.reset(2); 4135 } 4136 } 4137 4138 if (keycode != 0) { 4139 if (movement < 0) movement = -movement; 4140 int accelMovement = (int)(movement * accel); 4141 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4142 + " accelMovement=" + accelMovement 4143 + " accel=" + accel); 4144 if (accelMovement > movement) { 4145 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4146 + keycode); 4147 movement--; 4148 int repeatCount = accelMovement - movement; 4149 enqueueInputEvent(new KeyEvent(curTime, curTime, 4150 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4151 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4152 InputDevice.SOURCE_KEYBOARD)); 4153 } 4154 while (movement > 0) { 4155 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4156 + keycode); 4157 movement--; 4158 curTime = SystemClock.uptimeMillis(); 4159 enqueueInputEvent(new KeyEvent(curTime, curTime, 4160 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4161 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4162 InputDevice.SOURCE_KEYBOARD)); 4163 enqueueInputEvent(new KeyEvent(curTime, curTime, 4164 KeyEvent.ACTION_UP, keycode, 0, metaState, 4165 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4166 InputDevice.SOURCE_KEYBOARD)); 4167 } 4168 mLastTime = curTime; 4169 } 4170 } 4171 4172 public void cancel(MotionEvent event) { 4173 mLastTime = Integer.MIN_VALUE; 4174 4175 // If we reach this, we consumed a trackball event. 4176 // Because we will not translate the trackball event into a key event, 4177 // touch mode will not exit, so we exit touch mode here. 4178 if (mView != null && mAdded) { 4179 ensureTouchMode(false); 4180 } 4181 } 4182 } 4183 4184 /** 4185 * Maintains state information for a single trackball axis, generating 4186 * discrete (DPAD) movements based on raw trackball motion. 4187 */ 4188 static final class TrackballAxis { 4189 /** 4190 * The maximum amount of acceleration we will apply. 4191 */ 4192 static final float MAX_ACCELERATION = 20; 4193 4194 /** 4195 * The maximum amount of time (in milliseconds) between events in order 4196 * for us to consider the user to be doing fast trackball movements, 4197 * and thus apply an acceleration. 4198 */ 4199 static final long FAST_MOVE_TIME = 150; 4200 4201 /** 4202 * Scaling factor to the time (in milliseconds) between events to how 4203 * much to multiple/divide the current acceleration. When movement 4204 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4205 * FAST_MOVE_TIME it divides it. 4206 */ 4207 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4208 4209 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4210 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4211 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4212 4213 float position; 4214 float acceleration = 1; 4215 long lastMoveTime = 0; 4216 int step; 4217 int dir; 4218 int nonAccelMovement; 4219 4220 void reset(int _step) { 4221 position = 0; 4222 acceleration = 1; 4223 lastMoveTime = 0; 4224 step = _step; 4225 dir = 0; 4226 } 4227 4228 /** 4229 * Add trackball movement into the state. If the direction of movement 4230 * has been reversed, the state is reset before adding the 4231 * movement (so that you don't have to compensate for any previously 4232 * collected movement before see the result of the movement in the 4233 * new direction). 4234 * 4235 * @return Returns the absolute value of the amount of movement 4236 * collected so far. 4237 */ 4238 float collect(float off, long time, String axis) { 4239 long normTime; 4240 if (off > 0) { 4241 normTime = (long)(off * FAST_MOVE_TIME); 4242 if (dir < 0) { 4243 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4244 position = 0; 4245 step = 0; 4246 acceleration = 1; 4247 lastMoveTime = 0; 4248 } 4249 dir = 1; 4250 } else if (off < 0) { 4251 normTime = (long)((-off) * FAST_MOVE_TIME); 4252 if (dir > 0) { 4253 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4254 position = 0; 4255 step = 0; 4256 acceleration = 1; 4257 lastMoveTime = 0; 4258 } 4259 dir = -1; 4260 } else { 4261 normTime = 0; 4262 } 4263 4264 // The number of milliseconds between each movement that is 4265 // considered "normal" and will not result in any acceleration 4266 // or deceleration, scaled by the offset we have here. 4267 if (normTime > 0) { 4268 long delta = time - lastMoveTime; 4269 lastMoveTime = time; 4270 float acc = acceleration; 4271 if (delta < normTime) { 4272 // The user is scrolling rapidly, so increase acceleration. 4273 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4274 if (scale > 1) acc *= scale; 4275 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4276 + off + " normTime=" + normTime + " delta=" + delta 4277 + " scale=" + scale + " acc=" + acc); 4278 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4279 } else { 4280 // The user is scrolling slowly, so decrease acceleration. 4281 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4282 if (scale > 1) acc /= scale; 4283 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4284 + off + " normTime=" + normTime + " delta=" + delta 4285 + " scale=" + scale + " acc=" + acc); 4286 acceleration = acc > 1 ? acc : 1; 4287 } 4288 } 4289 position += off; 4290 return Math.abs(position); 4291 } 4292 4293 /** 4294 * Generate the number of discrete movement events appropriate for 4295 * the currently collected trackball movement. 4296 * 4297 * @return Returns the number of discrete movements, either positive 4298 * or negative, or 0 if there is not enough trackball movement yet 4299 * for a discrete movement. 4300 */ 4301 int generate() { 4302 int movement = 0; 4303 nonAccelMovement = 0; 4304 do { 4305 final int dir = position >= 0 ? 1 : -1; 4306 switch (step) { 4307 // If we are going to execute the first step, then we want 4308 // to do this as soon as possible instead of waiting for 4309 // a full movement, in order to make things look responsive. 4310 case 0: 4311 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4312 return movement; 4313 } 4314 movement += dir; 4315 nonAccelMovement += dir; 4316 step = 1; 4317 break; 4318 // If we have generated the first movement, then we need 4319 // to wait for the second complete trackball motion before 4320 // generating the second discrete movement. 4321 case 1: 4322 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4323 return movement; 4324 } 4325 movement += dir; 4326 nonAccelMovement += dir; 4327 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4328 step = 2; 4329 break; 4330 // After the first two, we generate discrete movements 4331 // consistently with the trackball, applying an acceleration 4332 // if the trackball is moving quickly. This is a simple 4333 // acceleration on top of what we already compute based 4334 // on how quickly the wheel is being turned, to apply 4335 // a longer increasing acceleration to continuous movement 4336 // in one direction. 4337 default: 4338 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4339 return movement; 4340 } 4341 movement += dir; 4342 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4343 float acc = acceleration; 4344 acc *= 1.1f; 4345 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4346 break; 4347 } 4348 } while (true); 4349 } 4350 } 4351 4352 /** 4353 * Creates dpad events from unhandled joystick movements. 4354 */ 4355 final class SyntheticJoystickHandler extends Handler { 4356 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4357 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4358 4359 private int mLastXDirection; 4360 private int mLastYDirection; 4361 private int mLastXKeyCode; 4362 private int mLastYKeyCode; 4363 4364 public SyntheticJoystickHandler() { 4365 super(true); 4366 } 4367 4368 @Override 4369 public void handleMessage(Message msg) { 4370 switch (msg.what) { 4371 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4372 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4373 KeyEvent oldEvent = (KeyEvent)msg.obj; 4374 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4375 SystemClock.uptimeMillis(), 4376 oldEvent.getRepeatCount() + 1); 4377 if (mAttachInfo.mHasWindowFocus) { 4378 enqueueInputEvent(e); 4379 Message m = obtainMessage(msg.what, e); 4380 m.setAsynchronous(true); 4381 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4382 } 4383 } break; 4384 } 4385 } 4386 4387 public void process(MotionEvent event) { 4388 update(event, true); 4389 } 4390 4391 public void cancel(MotionEvent event) { 4392 update(event, false); 4393 } 4394 4395 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4396 final long time = event.getEventTime(); 4397 final int metaState = event.getMetaState(); 4398 final int deviceId = event.getDeviceId(); 4399 final int source = event.getSource(); 4400 4401 int xDirection = joystickAxisValueToDirection( 4402 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4403 if (xDirection == 0) { 4404 xDirection = joystickAxisValueToDirection(event.getX()); 4405 } 4406 4407 int yDirection = joystickAxisValueToDirection( 4408 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4409 if (yDirection == 0) { 4410 yDirection = joystickAxisValueToDirection(event.getY()); 4411 } 4412 4413 if (xDirection != mLastXDirection) { 4414 if (mLastXKeyCode != 0) { 4415 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4416 enqueueInputEvent(new KeyEvent(time, time, 4417 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4418 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4419 mLastXKeyCode = 0; 4420 } 4421 4422 mLastXDirection = xDirection; 4423 4424 if (xDirection != 0 && synthesizeNewKeys) { 4425 mLastXKeyCode = xDirection > 0 4426 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4427 final KeyEvent e = new KeyEvent(time, time, 4428 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4429 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4430 enqueueInputEvent(e); 4431 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4432 m.setAsynchronous(true); 4433 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4434 } 4435 } 4436 4437 if (yDirection != mLastYDirection) { 4438 if (mLastYKeyCode != 0) { 4439 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4440 enqueueInputEvent(new KeyEvent(time, time, 4441 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4442 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4443 mLastYKeyCode = 0; 4444 } 4445 4446 mLastYDirection = yDirection; 4447 4448 if (yDirection != 0 && synthesizeNewKeys) { 4449 mLastYKeyCode = yDirection > 0 4450 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4451 final KeyEvent e = new KeyEvent(time, time, 4452 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4453 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4454 enqueueInputEvent(e); 4455 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4456 m.setAsynchronous(true); 4457 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4458 } 4459 } 4460 } 4461 4462 private int joystickAxisValueToDirection(float value) { 4463 if (value >= 0.5f) { 4464 return 1; 4465 } else if (value <= -0.5f) { 4466 return -1; 4467 } else { 4468 return 0; 4469 } 4470 } 4471 } 4472 4473 /** 4474 * Creates dpad events from unhandled touch navigation movements. 4475 */ 4476 final class SyntheticTouchNavigationHandler extends Handler { 4477 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4478 private static final boolean LOCAL_DEBUG = false; 4479 4480 // Assumed nominal width and height in millimeters of a touch navigation pad, 4481 // if no resolution information is available from the input system. 4482 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4483 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4484 4485 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4486 4487 // The nominal distance traveled to move by one unit. 4488 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4489 4490 // Minimum and maximum fling velocity in ticks per second. 4491 // The minimum velocity should be set such that we perform enough ticks per 4492 // second that the fling appears to be fluid. For example, if we set the minimum 4493 // to 2 ticks per second, then there may be up to half a second delay between the next 4494 // to last and last ticks which is noticeably discrete and jerky. This value should 4495 // probably not be set to anything less than about 4. 4496 // If fling accuracy is a problem then consider tuning the tick distance instead. 4497 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4498 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4499 4500 // Fling velocity decay factor applied after each new key is emitted. 4501 // This parameter controls the deceleration and overall duration of the fling. 4502 // The fling stops automatically when its velocity drops below the minimum 4503 // fling velocity defined above. 4504 private static final float FLING_TICK_DECAY = 0.8f; 4505 4506 /* The input device that we are tracking. */ 4507 4508 private int mCurrentDeviceId = -1; 4509 private int mCurrentSource; 4510 private boolean mCurrentDeviceSupported; 4511 4512 /* Configuration for the current input device. */ 4513 4514 // The scaled tick distance. A movement of this amount should generally translate 4515 // into a single dpad event in a given direction. 4516 private float mConfigTickDistance; 4517 4518 // The minimum and maximum scaled fling velocity. 4519 private float mConfigMinFlingVelocity; 4520 private float mConfigMaxFlingVelocity; 4521 4522 /* Tracking state. */ 4523 4524 // The velocity tracker for detecting flings. 4525 private VelocityTracker mVelocityTracker; 4526 4527 // The active pointer id, or -1 if none. 4528 private int mActivePointerId = -1; 4529 4530 // Location where tracking started. 4531 private float mStartX; 4532 private float mStartY; 4533 4534 // Most recently observed position. 4535 private float mLastX; 4536 private float mLastY; 4537 4538 // Accumulated movement delta since the last direction key was sent. 4539 private float mAccumulatedX; 4540 private float mAccumulatedY; 4541 4542 // Set to true if any movement was delivered to the app. 4543 // Implies that tap slop was exceeded. 4544 private boolean mConsumedMovement; 4545 4546 // The most recently sent key down event. 4547 // The keycode remains set until the direction changes or a fling ends 4548 // so that repeated key events may be generated as required. 4549 private long mPendingKeyDownTime; 4550 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4551 private int mPendingKeyRepeatCount; 4552 private int mPendingKeyMetaState; 4553 4554 // The current fling velocity while a fling is in progress. 4555 private boolean mFlinging; 4556 private float mFlingVelocity; 4557 4558 public SyntheticTouchNavigationHandler() { 4559 super(true); 4560 } 4561 4562 public void process(MotionEvent event) { 4563 // Update the current device information. 4564 final long time = event.getEventTime(); 4565 final int deviceId = event.getDeviceId(); 4566 final int source = event.getSource(); 4567 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4568 finishKeys(time); 4569 finishTracking(time); 4570 mCurrentDeviceId = deviceId; 4571 mCurrentSource = source; 4572 mCurrentDeviceSupported = false; 4573 InputDevice device = event.getDevice(); 4574 if (device != null) { 4575 // In order to support an input device, we must know certain 4576 // characteristics about it, such as its size and resolution. 4577 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4578 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4579 if (xRange != null && yRange != null) { 4580 mCurrentDeviceSupported = true; 4581 4582 // Infer the resolution if it not actually known. 4583 float xRes = xRange.getResolution(); 4584 if (xRes <= 0) { 4585 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4586 } 4587 float yRes = yRange.getResolution(); 4588 if (yRes <= 0) { 4589 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4590 } 4591 float nominalRes = (xRes + yRes) * 0.5f; 4592 4593 // Precompute all of the configuration thresholds we will need. 4594 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4595 mConfigMinFlingVelocity = 4596 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4597 mConfigMaxFlingVelocity = 4598 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4599 4600 if (LOCAL_DEBUG) { 4601 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4602 + " (" + Integer.toHexString(mCurrentSource) + "): " 4603 + ", mConfigTickDistance=" + mConfigTickDistance 4604 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4605 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4606 } 4607 } 4608 } 4609 } 4610 if (!mCurrentDeviceSupported) { 4611 return; 4612 } 4613 4614 // Handle the event. 4615 final int action = event.getActionMasked(); 4616 switch (action) { 4617 case MotionEvent.ACTION_DOWN: { 4618 boolean caughtFling = mFlinging; 4619 finishKeys(time); 4620 finishTracking(time); 4621 mActivePointerId = event.getPointerId(0); 4622 mVelocityTracker = VelocityTracker.obtain(); 4623 mVelocityTracker.addMovement(event); 4624 mStartX = event.getX(); 4625 mStartY = event.getY(); 4626 mLastX = mStartX; 4627 mLastY = mStartY; 4628 mAccumulatedX = 0; 4629 mAccumulatedY = 0; 4630 4631 // If we caught a fling, then pretend that the tap slop has already 4632 // been exceeded to suppress taps whose only purpose is to stop the fling. 4633 mConsumedMovement = caughtFling; 4634 break; 4635 } 4636 4637 case MotionEvent.ACTION_MOVE: 4638 case MotionEvent.ACTION_UP: { 4639 if (mActivePointerId < 0) { 4640 break; 4641 } 4642 final int index = event.findPointerIndex(mActivePointerId); 4643 if (index < 0) { 4644 finishKeys(time); 4645 finishTracking(time); 4646 break; 4647 } 4648 4649 mVelocityTracker.addMovement(event); 4650 final float x = event.getX(index); 4651 final float y = event.getY(index); 4652 mAccumulatedX += x - mLastX; 4653 mAccumulatedY += y - mLastY; 4654 mLastX = x; 4655 mLastY = y; 4656 4657 // Consume any accumulated movement so far. 4658 final int metaState = event.getMetaState(); 4659 consumeAccumulatedMovement(time, metaState); 4660 4661 // Detect taps and flings. 4662 if (action == MotionEvent.ACTION_UP) { 4663 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4664 // It might be a fling. 4665 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4666 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4667 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4668 if (!startFling(time, vx, vy)) { 4669 finishKeys(time); 4670 } 4671 } 4672 finishTracking(time); 4673 } 4674 break; 4675 } 4676 4677 case MotionEvent.ACTION_CANCEL: { 4678 finishKeys(time); 4679 finishTracking(time); 4680 break; 4681 } 4682 } 4683 } 4684 4685 public void cancel(MotionEvent event) { 4686 if (mCurrentDeviceId == event.getDeviceId() 4687 && mCurrentSource == event.getSource()) { 4688 final long time = event.getEventTime(); 4689 finishKeys(time); 4690 finishTracking(time); 4691 } 4692 } 4693 4694 private void finishKeys(long time) { 4695 cancelFling(); 4696 sendKeyUp(time); 4697 } 4698 4699 private void finishTracking(long time) { 4700 if (mActivePointerId >= 0) { 4701 mActivePointerId = -1; 4702 mVelocityTracker.recycle(); 4703 mVelocityTracker = null; 4704 } 4705 } 4706 4707 private void consumeAccumulatedMovement(long time, int metaState) { 4708 final float absX = Math.abs(mAccumulatedX); 4709 final float absY = Math.abs(mAccumulatedY); 4710 if (absX >= absY) { 4711 if (absX >= mConfigTickDistance) { 4712 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4713 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4714 mAccumulatedY = 0; 4715 mConsumedMovement = true; 4716 } 4717 } else { 4718 if (absY >= mConfigTickDistance) { 4719 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4720 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4721 mAccumulatedX = 0; 4722 mConsumedMovement = true; 4723 } 4724 } 4725 } 4726 4727 private float consumeAccumulatedMovement(long time, int metaState, 4728 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4729 while (accumulator <= -mConfigTickDistance) { 4730 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4731 accumulator += mConfigTickDistance; 4732 } 4733 while (accumulator >= mConfigTickDistance) { 4734 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4735 accumulator -= mConfigTickDistance; 4736 } 4737 return accumulator; 4738 } 4739 4740 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4741 if (mPendingKeyCode != keyCode) { 4742 sendKeyUp(time); 4743 mPendingKeyDownTime = time; 4744 mPendingKeyCode = keyCode; 4745 mPendingKeyRepeatCount = 0; 4746 } else { 4747 mPendingKeyRepeatCount += 1; 4748 } 4749 mPendingKeyMetaState = metaState; 4750 4751 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4752 // but it doesn't quite make sense when simulating the events in this way. 4753 if (LOCAL_DEBUG) { 4754 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4755 + ", repeatCount=" + mPendingKeyRepeatCount 4756 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4757 } 4758 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4759 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4760 mPendingKeyMetaState, mCurrentDeviceId, 4761 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4762 } 4763 4764 private void sendKeyUp(long time) { 4765 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4766 if (LOCAL_DEBUG) { 4767 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4768 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4769 } 4770 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4771 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4772 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4773 mCurrentSource)); 4774 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4775 } 4776 } 4777 4778 private boolean startFling(long time, float vx, float vy) { 4779 if (LOCAL_DEBUG) { 4780 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4781 + ", min=" + mConfigMinFlingVelocity); 4782 } 4783 4784 // Flings must be oriented in the same direction as the preceding movements. 4785 switch (mPendingKeyCode) { 4786 case KeyEvent.KEYCODE_DPAD_LEFT: 4787 if (-vx >= mConfigMinFlingVelocity 4788 && Math.abs(vy) < mConfigMinFlingVelocity) { 4789 mFlingVelocity = -vx; 4790 break; 4791 } 4792 return false; 4793 4794 case KeyEvent.KEYCODE_DPAD_RIGHT: 4795 if (vx >= mConfigMinFlingVelocity 4796 && Math.abs(vy) < mConfigMinFlingVelocity) { 4797 mFlingVelocity = vx; 4798 break; 4799 } 4800 return false; 4801 4802 case KeyEvent.KEYCODE_DPAD_UP: 4803 if (-vy >= mConfigMinFlingVelocity 4804 && Math.abs(vx) < mConfigMinFlingVelocity) { 4805 mFlingVelocity = -vy; 4806 break; 4807 } 4808 return false; 4809 4810 case KeyEvent.KEYCODE_DPAD_DOWN: 4811 if (vy >= mConfigMinFlingVelocity 4812 && Math.abs(vx) < mConfigMinFlingVelocity) { 4813 mFlingVelocity = vy; 4814 break; 4815 } 4816 return false; 4817 } 4818 4819 // Post the first fling event. 4820 mFlinging = postFling(time); 4821 return mFlinging; 4822 } 4823 4824 private boolean postFling(long time) { 4825 // The idea here is to estimate the time when the pointer would have 4826 // traveled one tick distance unit given the current fling velocity. 4827 // This effect creates continuity of motion. 4828 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4829 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4830 postAtTime(mFlingRunnable, time + delay); 4831 if (LOCAL_DEBUG) { 4832 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4833 + mFlingVelocity + ", delay=" + delay 4834 + ", keyCode=" + mPendingKeyCode); 4835 } 4836 return true; 4837 } 4838 return false; 4839 } 4840 4841 private void cancelFling() { 4842 if (mFlinging) { 4843 removeCallbacks(mFlingRunnable); 4844 mFlinging = false; 4845 } 4846 } 4847 4848 private final Runnable mFlingRunnable = new Runnable() { 4849 @Override 4850 public void run() { 4851 final long time = SystemClock.uptimeMillis(); 4852 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4853 mFlingVelocity *= FLING_TICK_DECAY; 4854 if (!postFling(time)) { 4855 mFlinging = false; 4856 finishKeys(time); 4857 } 4858 } 4859 }; 4860 } 4861 4862 private KeyEvent getSyntheticFallbackKey(KeyEvent event) { 4863 // In some locales (like Japan) controllers use B for confirm and A for back, rather 4864 // than vice versa, so we need to special case this here since the input system itself 4865 // is not locale-aware. 4866 int keyCode; 4867 switch(event.getKeyCode()) { 4868 case KeyEvent.KEYCODE_BUTTON_A: 4869 case KeyEvent.KEYCODE_BUTTON_C: 4870 case KeyEvent.KEYCODE_BUTTON_X: 4871 case KeyEvent.KEYCODE_BUTTON_Z: 4872 keyCode = mFlipControllerFallbackKeys ? 4873 KeyEvent.KEYCODE_BACK : KeyEvent.KEYCODE_DPAD_CENTER; 4874 break; 4875 case KeyEvent.KEYCODE_BUTTON_B: 4876 case KeyEvent.KEYCODE_BUTTON_Y: 4877 keyCode = mFlipControllerFallbackKeys ? 4878 KeyEvent.KEYCODE_DPAD_CENTER : KeyEvent.KEYCODE_BACK; 4879 break; 4880 case KeyEvent.KEYCODE_BUTTON_THUMBL: 4881 case KeyEvent.KEYCODE_BUTTON_THUMBR: 4882 case KeyEvent.KEYCODE_BUTTON_START: 4883 case KeyEvent.KEYCODE_BUTTON_1: 4884 case KeyEvent.KEYCODE_BUTTON_2: 4885 case KeyEvent.KEYCODE_BUTTON_3: 4886 case KeyEvent.KEYCODE_BUTTON_4: 4887 case KeyEvent.KEYCODE_BUTTON_5: 4888 case KeyEvent.KEYCODE_BUTTON_6: 4889 case KeyEvent.KEYCODE_BUTTON_7: 4890 case KeyEvent.KEYCODE_BUTTON_8: 4891 case KeyEvent.KEYCODE_BUTTON_9: 4892 case KeyEvent.KEYCODE_BUTTON_10: 4893 case KeyEvent.KEYCODE_BUTTON_11: 4894 case KeyEvent.KEYCODE_BUTTON_12: 4895 case KeyEvent.KEYCODE_BUTTON_13: 4896 case KeyEvent.KEYCODE_BUTTON_14: 4897 case KeyEvent.KEYCODE_BUTTON_15: 4898 case KeyEvent.KEYCODE_BUTTON_16: 4899 keyCode = KeyEvent.KEYCODE_DPAD_CENTER; 4900 break; 4901 case KeyEvent.KEYCODE_BUTTON_SELECT: 4902 case KeyEvent.KEYCODE_BUTTON_MODE: 4903 keyCode = KeyEvent.KEYCODE_MENU; 4904 default: 4905 return null; 4906 } 4907 return KeyEvent.obtain(event.getDownTime(), event.getEventTime(), 4908 event.getAction(), keyCode, event.getRepeatCount(), event.getMetaState(), 4909 event.getDeviceId(), event.getScanCode(), 4910 event.getFlags() | KeyEvent.FLAG_FALLBACK, event.getSource(), null); 4911 } 4912 4913 4914 final class SyntheticKeyHandler { 4915 4916 public boolean process(KeyEvent event) { 4917 KeyEvent syntheticKey = getSyntheticFallbackKey(event); 4918 if (syntheticKey != null) { 4919 enqueueInputEvent(syntheticKey); 4920 return true; 4921 } 4922 return false; 4923 } 4924 4925 } 4926 4927 /** 4928 * Returns true if the key is used for keyboard navigation. 4929 * @param keyEvent The key event. 4930 * @return True if the key is used for keyboard navigation. 4931 */ 4932 private static boolean isNavigationKey(KeyEvent keyEvent) { 4933 switch (keyEvent.getKeyCode()) { 4934 case KeyEvent.KEYCODE_DPAD_LEFT: 4935 case KeyEvent.KEYCODE_DPAD_RIGHT: 4936 case KeyEvent.KEYCODE_DPAD_UP: 4937 case KeyEvent.KEYCODE_DPAD_DOWN: 4938 case KeyEvent.KEYCODE_DPAD_CENTER: 4939 case KeyEvent.KEYCODE_PAGE_UP: 4940 case KeyEvent.KEYCODE_PAGE_DOWN: 4941 case KeyEvent.KEYCODE_MOVE_HOME: 4942 case KeyEvent.KEYCODE_MOVE_END: 4943 case KeyEvent.KEYCODE_TAB: 4944 case KeyEvent.KEYCODE_SPACE: 4945 case KeyEvent.KEYCODE_ENTER: 4946 return true; 4947 } 4948 return false; 4949 } 4950 4951 /** 4952 * Returns true if the key is used for typing. 4953 * @param keyEvent The key event. 4954 * @return True if the key is used for typing. 4955 */ 4956 private static boolean isTypingKey(KeyEvent keyEvent) { 4957 return keyEvent.getUnicodeChar() > 0; 4958 } 4959 4960 /** 4961 * See if the key event means we should leave touch mode (and leave touch mode if so). 4962 * @param event The key event. 4963 * @return Whether this key event should be consumed (meaning the act of 4964 * leaving touch mode alone is considered the event). 4965 */ 4966 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4967 // Only relevant in touch mode. 4968 if (!mAttachInfo.mInTouchMode) { 4969 return false; 4970 } 4971 4972 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4973 final int action = event.getAction(); 4974 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4975 return false; 4976 } 4977 4978 // Don't leave touch mode if the IME told us not to. 4979 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4980 return false; 4981 } 4982 4983 // If the key can be used for keyboard navigation then leave touch mode 4984 // and select a focused view if needed (in ensureTouchMode). 4985 // When a new focused view is selected, we consume the navigation key because 4986 // navigation doesn't make much sense unless a view already has focus so 4987 // the key's purpose is to set focus. 4988 if (isNavigationKey(event)) { 4989 return ensureTouchMode(false); 4990 } 4991 4992 // If the key can be used for typing then leave touch mode 4993 // and select a focused view if needed (in ensureTouchMode). 4994 // Always allow the view to process the typing key. 4995 if (isTypingKey(event)) { 4996 ensureTouchMode(false); 4997 return false; 4998 } 4999 5000 return false; 5001 } 5002 5003 /* drag/drop */ 5004 void setLocalDragState(Object obj) { 5005 mLocalDragState = obj; 5006 } 5007 5008 private void handleDragEvent(DragEvent event) { 5009 // From the root, only drag start/end/location are dispatched. entered/exited 5010 // are determined and dispatched by the viewgroup hierarchy, who then report 5011 // that back here for ultimate reporting back to the framework. 5012 if (mView != null && mAdded) { 5013 final int what = event.mAction; 5014 5015 if (what == DragEvent.ACTION_DRAG_EXITED) { 5016 // A direct EXITED event means that the window manager knows we've just crossed 5017 // a window boundary, so the current drag target within this one must have 5018 // just been exited. Send it the usual notifications and then we're done 5019 // for now. 5020 mView.dispatchDragEvent(event); 5021 } else { 5022 // Cache the drag description when the operation starts, then fill it in 5023 // on subsequent calls as a convenience 5024 if (what == DragEvent.ACTION_DRAG_STARTED) { 5025 mCurrentDragView = null; // Start the current-recipient tracking 5026 mDragDescription = event.mClipDescription; 5027 } else { 5028 event.mClipDescription = mDragDescription; 5029 } 5030 5031 // For events with a [screen] location, translate into window coordinates 5032 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5033 mDragPoint.set(event.mX, event.mY); 5034 if (mTranslator != null) { 5035 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5036 } 5037 5038 if (mCurScrollY != 0) { 5039 mDragPoint.offset(0, mCurScrollY); 5040 } 5041 5042 event.mX = mDragPoint.x; 5043 event.mY = mDragPoint.y; 5044 } 5045 5046 // Remember who the current drag target is pre-dispatch 5047 final View prevDragView = mCurrentDragView; 5048 5049 // Now dispatch the drag/drop event 5050 boolean result = mView.dispatchDragEvent(event); 5051 5052 // If we changed apparent drag target, tell the OS about it 5053 if (prevDragView != mCurrentDragView) { 5054 try { 5055 if (prevDragView != null) { 5056 mWindowSession.dragRecipientExited(mWindow); 5057 } 5058 if (mCurrentDragView != null) { 5059 mWindowSession.dragRecipientEntered(mWindow); 5060 } 5061 } catch (RemoteException e) { 5062 Slog.e(TAG, "Unable to note drag target change"); 5063 } 5064 } 5065 5066 // Report the drop result when we're done 5067 if (what == DragEvent.ACTION_DROP) { 5068 mDragDescription = null; 5069 try { 5070 Log.i(TAG, "Reporting drop result: " + result); 5071 mWindowSession.reportDropResult(mWindow, result); 5072 } catch (RemoteException e) { 5073 Log.e(TAG, "Unable to report drop result"); 5074 } 5075 } 5076 5077 // When the drag operation ends, release any local state object 5078 // that may have been in use 5079 if (what == DragEvent.ACTION_DRAG_ENDED) { 5080 setLocalDragState(null); 5081 } 5082 } 5083 } 5084 event.recycle(); 5085 } 5086 5087 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5088 if (mSeq != args.seq) { 5089 // The sequence has changed, so we need to update our value and make 5090 // sure to do a traversal afterward so the window manager is given our 5091 // most recent data. 5092 mSeq = args.seq; 5093 mAttachInfo.mForceReportNewAttributes = true; 5094 scheduleTraversals(); 5095 } 5096 if (mView == null) return; 5097 if (args.localChanges != 0) { 5098 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5099 } 5100 if (mAttachInfo != null) { 5101 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5102 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5103 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5104 mView.dispatchSystemUiVisibilityChanged(visibility); 5105 } 5106 } 5107 } 5108 5109 public void handleDispatchDoneAnimating() { 5110 if (mWindowsAnimating) { 5111 mWindowsAnimating = false; 5112 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5113 scheduleTraversals(); 5114 } 5115 } 5116 } 5117 5118 public void getLastTouchPoint(Point outLocation) { 5119 outLocation.x = (int) mLastTouchPoint.x; 5120 outLocation.y = (int) mLastTouchPoint.y; 5121 } 5122 5123 public void setDragFocus(View newDragTarget) { 5124 if (mCurrentDragView != newDragTarget) { 5125 mCurrentDragView = newDragTarget; 5126 } 5127 } 5128 5129 private AudioManager getAudioManager() { 5130 if (mView == null) { 5131 throw new IllegalStateException("getAudioManager called when there is no mView"); 5132 } 5133 if (mAudioManager == null) { 5134 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5135 } 5136 return mAudioManager; 5137 } 5138 5139 public AccessibilityInteractionController getAccessibilityInteractionController() { 5140 if (mView == null) { 5141 throw new IllegalStateException("getAccessibilityInteractionController" 5142 + " called when there is no mView"); 5143 } 5144 if (mAccessibilityInteractionController == null) { 5145 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5146 } 5147 return mAccessibilityInteractionController; 5148 } 5149 5150 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5151 boolean insetsPending) throws RemoteException { 5152 5153 float appScale = mAttachInfo.mApplicationScale; 5154 boolean restore = false; 5155 if (params != null && mTranslator != null) { 5156 restore = true; 5157 params.backup(); 5158 mTranslator.translateWindowLayout(params); 5159 } 5160 if (params != null) { 5161 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5162 } 5163 mPendingConfiguration.seq = 0; 5164 //Log.d(TAG, ">>>>>> CALLING relayout"); 5165 if (params != null && mOrigWindowType != params.type) { 5166 // For compatibility with old apps, don't crash here. 5167 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5168 Slog.w(TAG, "Window type can not be changed after " 5169 + "the window is added; ignoring change of " + mView); 5170 params.type = mOrigWindowType; 5171 } 5172 } 5173 int relayoutResult = mWindowSession.relayout( 5174 mWindow, mSeq, params, 5175 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5176 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5177 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5178 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5179 mPendingConfiguration, mSurface); 5180 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5181 if (restore) { 5182 params.restore(); 5183 } 5184 5185 if (mTranslator != null) { 5186 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5187 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5188 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5189 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5190 } 5191 return relayoutResult; 5192 } 5193 5194 /** 5195 * {@inheritDoc} 5196 */ 5197 @Override 5198 public void playSoundEffect(int effectId) { 5199 checkThread(); 5200 5201 if (mMediaDisabled) { 5202 return; 5203 } 5204 5205 try { 5206 final AudioManager audioManager = getAudioManager(); 5207 5208 switch (effectId) { 5209 case SoundEffectConstants.CLICK: 5210 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5211 return; 5212 case SoundEffectConstants.NAVIGATION_DOWN: 5213 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5214 return; 5215 case SoundEffectConstants.NAVIGATION_LEFT: 5216 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5217 return; 5218 case SoundEffectConstants.NAVIGATION_RIGHT: 5219 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5220 return; 5221 case SoundEffectConstants.NAVIGATION_UP: 5222 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5223 return; 5224 default: 5225 throw new IllegalArgumentException("unknown effect id " + effectId + 5226 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5227 } 5228 } catch (IllegalStateException e) { 5229 // Exception thrown by getAudioManager() when mView is null 5230 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5231 e.printStackTrace(); 5232 } 5233 } 5234 5235 /** 5236 * {@inheritDoc} 5237 */ 5238 @Override 5239 public boolean performHapticFeedback(int effectId, boolean always) { 5240 try { 5241 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5242 } catch (RemoteException e) { 5243 return false; 5244 } 5245 } 5246 5247 /** 5248 * {@inheritDoc} 5249 */ 5250 @Override 5251 public View focusSearch(View focused, int direction) { 5252 checkThread(); 5253 if (!(mView instanceof ViewGroup)) { 5254 return null; 5255 } 5256 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5257 } 5258 5259 public void debug() { 5260 mView.debug(); 5261 } 5262 5263 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5264 String innerPrefix = prefix + " "; 5265 writer.print(prefix); writer.println("ViewRoot:"); 5266 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5267 writer.print(" mRemoved="); writer.println(mRemoved); 5268 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5269 writer.println(mConsumeBatchedInputScheduled); 5270 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5271 writer.println(mPendingInputEventCount); 5272 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5273 writer.println(mProcessInputEventsScheduled); 5274 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5275 writer.print(mTraversalScheduled); 5276 if (mTraversalScheduled) { 5277 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5278 } else { 5279 writer.println(); 5280 } 5281 mFirstInputStage.dump(innerPrefix, writer); 5282 5283 mChoreographer.dump(prefix, writer); 5284 5285 writer.print(prefix); writer.println("View Hierarchy:"); 5286 dumpViewHierarchy(innerPrefix, writer, mView); 5287 } 5288 5289 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5290 writer.print(prefix); 5291 if (view == null) { 5292 writer.println("null"); 5293 return; 5294 } 5295 writer.println(view.toString()); 5296 if (!(view instanceof ViewGroup)) { 5297 return; 5298 } 5299 ViewGroup grp = (ViewGroup)view; 5300 final int N = grp.getChildCount(); 5301 if (N <= 0) { 5302 return; 5303 } 5304 prefix = prefix + " "; 5305 for (int i=0; i<N; i++) { 5306 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5307 } 5308 } 5309 5310 public void dumpGfxInfo(int[] info) { 5311 info[0] = info[1] = 0; 5312 if (mView != null) { 5313 getGfxInfo(mView, info); 5314 } 5315 } 5316 5317 private static void getGfxInfo(View view, int[] info) { 5318 DisplayList displayList = view.mDisplayList; 5319 info[0]++; 5320 if (displayList != null) { 5321 info[1] += displayList.getSize(); 5322 } 5323 5324 if (view instanceof ViewGroup) { 5325 ViewGroup group = (ViewGroup) view; 5326 5327 int count = group.getChildCount(); 5328 for (int i = 0; i < count; i++) { 5329 getGfxInfo(group.getChildAt(i), info); 5330 } 5331 } 5332 } 5333 5334 /** 5335 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5336 * @return True, request has been queued. False, request has been completed. 5337 */ 5338 boolean die(boolean immediate) { 5339 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5340 // done by dispatchDetachedFromWindow will cause havoc on return. 5341 if (immediate && !mIsInTraversal) { 5342 doDie(); 5343 return false; 5344 } 5345 5346 if (!mIsDrawing) { 5347 destroyHardwareRenderer(); 5348 } else { 5349 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5350 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5351 } 5352 mHandler.sendEmptyMessage(MSG_DIE); 5353 return true; 5354 } 5355 5356 void doDie() { 5357 checkThread(); 5358 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5359 synchronized (this) { 5360 if (mRemoved) { 5361 return; 5362 } 5363 mRemoved = true; 5364 if (mAdded) { 5365 dispatchDetachedFromWindow(); 5366 } 5367 5368 if (mAdded && !mFirst) { 5369 invalidateDisplayLists(); 5370 destroyHardwareRenderer(); 5371 5372 if (mView != null) { 5373 int viewVisibility = mView.getVisibility(); 5374 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5375 if (mWindowAttributesChanged || viewVisibilityChanged) { 5376 // If layout params have been changed, first give them 5377 // to the window manager to make sure it has the correct 5378 // animation info. 5379 try { 5380 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5381 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5382 mWindowSession.finishDrawing(mWindow); 5383 } 5384 } catch (RemoteException e) { 5385 } 5386 } 5387 5388 mSurface.release(); 5389 } 5390 } 5391 5392 mAdded = false; 5393 } 5394 WindowManagerGlobal.getInstance().doRemoveView(this); 5395 } 5396 5397 public void requestUpdateConfiguration(Configuration config) { 5398 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5399 mHandler.sendMessage(msg); 5400 } 5401 5402 public void loadSystemProperties() { 5403 mHandler.post(new Runnable() { 5404 @Override 5405 public void run() { 5406 // Profiling 5407 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5408 profileRendering(mAttachInfo.mHasWindowFocus); 5409 5410 // Media (used by sound effects) 5411 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5412 5413 // Hardware rendering 5414 if (mAttachInfo.mHardwareRenderer != null) { 5415 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mSurface)) { 5416 invalidate(); 5417 } 5418 } 5419 5420 // Layout debugging 5421 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5422 if (layout != mAttachInfo.mDebugLayout) { 5423 mAttachInfo.mDebugLayout = layout; 5424 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5425 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5426 } 5427 } 5428 } 5429 }); 5430 } 5431 5432 private void destroyHardwareRenderer() { 5433 AttachInfo attachInfo = mAttachInfo; 5434 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5435 5436 if (hardwareRenderer != null) { 5437 if (mView != null) { 5438 hardwareRenderer.destroyHardwareResources(mView); 5439 } 5440 hardwareRenderer.destroy(true); 5441 hardwareRenderer.setRequested(false); 5442 5443 attachInfo.mHardwareRenderer = null; 5444 attachInfo.mHardwareAccelerated = false; 5445 } 5446 } 5447 5448 public void dispatchFinishInputConnection(InputConnection connection) { 5449 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5450 mHandler.sendMessage(msg); 5451 } 5452 5453 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5454 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5455 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5456 + " contentInsets=" + contentInsets.toShortString() 5457 + " visibleInsets=" + visibleInsets.toShortString() 5458 + " reportDraw=" + reportDraw); 5459 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5460 if (mTranslator != null) { 5461 mTranslator.translateRectInScreenToAppWindow(frame); 5462 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5463 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5464 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5465 } 5466 SomeArgs args = SomeArgs.obtain(); 5467 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5468 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5469 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5470 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5471 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5472 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5473 msg.obj = args; 5474 mHandler.sendMessage(msg); 5475 } 5476 5477 public void dispatchMoved(int newX, int newY) { 5478 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5479 if (mTranslator != null) { 5480 PointF point = new PointF(newX, newY); 5481 mTranslator.translatePointInScreenToAppWindow(point); 5482 newX = (int) (point.x + 0.5); 5483 newY = (int) (point.y + 0.5); 5484 } 5485 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5486 mHandler.sendMessage(msg); 5487 } 5488 5489 /** 5490 * Represents a pending input event that is waiting in a queue. 5491 * 5492 * Input events are processed in serial order by the timestamp specified by 5493 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5494 * one input event to the application at a time and waits for the application 5495 * to finish handling it before delivering the next one. 5496 * 5497 * However, because the application or IME can synthesize and inject multiple 5498 * key events at a time without going through the input dispatcher, we end up 5499 * needing a queue on the application's side. 5500 */ 5501 private static final class QueuedInputEvent { 5502 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5503 public static final int FLAG_DEFERRED = 1 << 1; 5504 public static final int FLAG_FINISHED = 1 << 2; 5505 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5506 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5507 5508 public QueuedInputEvent mNext; 5509 5510 public InputEvent mEvent; 5511 public InputEventReceiver mReceiver; 5512 public int mFlags; 5513 5514 public boolean shouldSkipIme() { 5515 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5516 return true; 5517 } 5518 return mEvent instanceof MotionEvent 5519 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5520 } 5521 } 5522 5523 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5524 InputEventReceiver receiver, int flags) { 5525 QueuedInputEvent q = mQueuedInputEventPool; 5526 if (q != null) { 5527 mQueuedInputEventPoolSize -= 1; 5528 mQueuedInputEventPool = q.mNext; 5529 q.mNext = null; 5530 } else { 5531 q = new QueuedInputEvent(); 5532 } 5533 5534 q.mEvent = event; 5535 q.mReceiver = receiver; 5536 q.mFlags = flags; 5537 return q; 5538 } 5539 5540 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5541 q.mEvent = null; 5542 q.mReceiver = null; 5543 5544 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5545 mQueuedInputEventPoolSize += 1; 5546 q.mNext = mQueuedInputEventPool; 5547 mQueuedInputEventPool = q; 5548 } 5549 } 5550 5551 void enqueueInputEvent(InputEvent event) { 5552 enqueueInputEvent(event, null, 0, false); 5553 } 5554 5555 void enqueueInputEvent(InputEvent event, 5556 InputEventReceiver receiver, int flags, boolean processImmediately) { 5557 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5558 5559 // Always enqueue the input event in order, regardless of its time stamp. 5560 // We do this because the application or the IME may inject key events 5561 // in response to touch events and we want to ensure that the injected keys 5562 // are processed in the order they were received and we cannot trust that 5563 // the time stamp of injected events are monotonic. 5564 QueuedInputEvent last = mPendingInputEventTail; 5565 if (last == null) { 5566 mPendingInputEventHead = q; 5567 mPendingInputEventTail = q; 5568 } else { 5569 last.mNext = q; 5570 mPendingInputEventTail = q; 5571 } 5572 mPendingInputEventCount += 1; 5573 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5574 mPendingInputEventCount); 5575 5576 if (processImmediately) { 5577 doProcessInputEvents(); 5578 } else { 5579 scheduleProcessInputEvents(); 5580 } 5581 } 5582 5583 private void scheduleProcessInputEvents() { 5584 if (!mProcessInputEventsScheduled) { 5585 mProcessInputEventsScheduled = true; 5586 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5587 msg.setAsynchronous(true); 5588 mHandler.sendMessage(msg); 5589 } 5590 } 5591 5592 void doProcessInputEvents() { 5593 // Deliver all pending input events in the queue. 5594 while (mPendingInputEventHead != null) { 5595 QueuedInputEvent q = mPendingInputEventHead; 5596 mPendingInputEventHead = q.mNext; 5597 if (mPendingInputEventHead == null) { 5598 mPendingInputEventTail = null; 5599 } 5600 q.mNext = null; 5601 5602 mPendingInputEventCount -= 1; 5603 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5604 mPendingInputEventCount); 5605 5606 deliverInputEvent(q); 5607 } 5608 5609 // We are done processing all input events that we can process right now 5610 // so we can clear the pending flag immediately. 5611 if (mProcessInputEventsScheduled) { 5612 mProcessInputEventsScheduled = false; 5613 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5614 } 5615 } 5616 5617 private void deliverInputEvent(QueuedInputEvent q) { 5618 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5619 try { 5620 if (mInputEventConsistencyVerifier != null) { 5621 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5622 } 5623 5624 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5625 if (stage != null) { 5626 stage.deliver(q); 5627 } else { 5628 finishInputEvent(q); 5629 } 5630 } finally { 5631 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5632 } 5633 } 5634 5635 private void finishInputEvent(QueuedInputEvent q) { 5636 if (q.mReceiver != null) { 5637 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5638 q.mReceiver.finishInputEvent(q.mEvent, handled); 5639 } else { 5640 q.mEvent.recycleIfNeededAfterDispatch(); 5641 } 5642 5643 recycleQueuedInputEvent(q); 5644 } 5645 5646 static boolean isTerminalInputEvent(InputEvent event) { 5647 if (event instanceof KeyEvent) { 5648 final KeyEvent keyEvent = (KeyEvent)event; 5649 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5650 } else { 5651 final MotionEvent motionEvent = (MotionEvent)event; 5652 final int action = motionEvent.getAction(); 5653 return action == MotionEvent.ACTION_UP 5654 || action == MotionEvent.ACTION_CANCEL 5655 || action == MotionEvent.ACTION_HOVER_EXIT; 5656 } 5657 } 5658 5659 void scheduleConsumeBatchedInput() { 5660 if (!mConsumeBatchedInputScheduled) { 5661 mConsumeBatchedInputScheduled = true; 5662 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5663 mConsumedBatchedInputRunnable, null); 5664 } 5665 } 5666 5667 void unscheduleConsumeBatchedInput() { 5668 if (mConsumeBatchedInputScheduled) { 5669 mConsumeBatchedInputScheduled = false; 5670 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5671 mConsumedBatchedInputRunnable, null); 5672 } 5673 } 5674 5675 void doConsumeBatchedInput(long frameTimeNanos) { 5676 if (mConsumeBatchedInputScheduled) { 5677 mConsumeBatchedInputScheduled = false; 5678 if (mInputEventReceiver != null) { 5679 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos)) { 5680 // If we consumed a batch here, we want to go ahead and schedule the 5681 // consumption of batched input events on the next frame. Otherwise, we would 5682 // wait until we have more input events pending and might get starved by other 5683 // things occurring in the process. 5684 scheduleConsumeBatchedInput(); 5685 } 5686 } 5687 doProcessInputEvents(); 5688 } 5689 } 5690 5691 final class TraversalRunnable implements Runnable { 5692 @Override 5693 public void run() { 5694 doTraversal(); 5695 } 5696 } 5697 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5698 5699 final class WindowInputEventReceiver extends InputEventReceiver { 5700 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5701 super(inputChannel, looper); 5702 } 5703 5704 @Override 5705 public void onInputEvent(InputEvent event) { 5706 enqueueInputEvent(event, this, 0, true); 5707 } 5708 5709 @Override 5710 public void onBatchedInputEventPending() { 5711 scheduleConsumeBatchedInput(); 5712 } 5713 5714 @Override 5715 public void dispose() { 5716 unscheduleConsumeBatchedInput(); 5717 super.dispose(); 5718 } 5719 } 5720 WindowInputEventReceiver mInputEventReceiver; 5721 5722 final class ConsumeBatchedInputRunnable implements Runnable { 5723 @Override 5724 public void run() { 5725 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5726 } 5727 } 5728 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5729 new ConsumeBatchedInputRunnable(); 5730 boolean mConsumeBatchedInputScheduled; 5731 5732 final class InvalidateOnAnimationRunnable implements Runnable { 5733 private boolean mPosted; 5734 private final ArrayList<View> mViews = new ArrayList<View>(); 5735 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5736 new ArrayList<AttachInfo.InvalidateInfo>(); 5737 private View[] mTempViews; 5738 private AttachInfo.InvalidateInfo[] mTempViewRects; 5739 5740 public void addView(View view) { 5741 synchronized (this) { 5742 mViews.add(view); 5743 postIfNeededLocked(); 5744 } 5745 } 5746 5747 public void addViewRect(AttachInfo.InvalidateInfo info) { 5748 synchronized (this) { 5749 mViewRects.add(info); 5750 postIfNeededLocked(); 5751 } 5752 } 5753 5754 public void removeView(View view) { 5755 synchronized (this) { 5756 mViews.remove(view); 5757 5758 for (int i = mViewRects.size(); i-- > 0; ) { 5759 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5760 if (info.target == view) { 5761 mViewRects.remove(i); 5762 info.recycle(); 5763 } 5764 } 5765 5766 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5767 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5768 mPosted = false; 5769 } 5770 } 5771 } 5772 5773 @Override 5774 public void run() { 5775 final int viewCount; 5776 final int viewRectCount; 5777 synchronized (this) { 5778 mPosted = false; 5779 5780 viewCount = mViews.size(); 5781 if (viewCount != 0) { 5782 mTempViews = mViews.toArray(mTempViews != null 5783 ? mTempViews : new View[viewCount]); 5784 mViews.clear(); 5785 } 5786 5787 viewRectCount = mViewRects.size(); 5788 if (viewRectCount != 0) { 5789 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5790 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5791 mViewRects.clear(); 5792 } 5793 } 5794 5795 for (int i = 0; i < viewCount; i++) { 5796 mTempViews[i].invalidate(); 5797 mTempViews[i] = null; 5798 } 5799 5800 for (int i = 0; i < viewRectCount; i++) { 5801 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5802 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5803 info.recycle(); 5804 } 5805 } 5806 5807 private void postIfNeededLocked() { 5808 if (!mPosted) { 5809 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5810 mPosted = true; 5811 } 5812 } 5813 } 5814 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5815 new InvalidateOnAnimationRunnable(); 5816 5817 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5818 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5819 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5820 } 5821 5822 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5823 long delayMilliseconds) { 5824 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5825 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5826 } 5827 5828 public void dispatchInvalidateOnAnimation(View view) { 5829 mInvalidateOnAnimationRunnable.addView(view); 5830 } 5831 5832 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5833 mInvalidateOnAnimationRunnable.addViewRect(info); 5834 } 5835 5836 public void enqueueDisplayList(DisplayList displayList) { 5837 mDisplayLists.add(displayList); 5838 } 5839 5840 public void cancelInvalidate(View view) { 5841 mHandler.removeMessages(MSG_INVALIDATE, view); 5842 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5843 // them to the pool 5844 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5845 mInvalidateOnAnimationRunnable.removeView(view); 5846 } 5847 5848 public void dispatchInputEvent(InputEvent event) { 5849 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, event); 5850 msg.setAsynchronous(true); 5851 mHandler.sendMessage(msg); 5852 } 5853 5854 public void dispatchKeyFromIme(KeyEvent event) { 5855 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5856 msg.setAsynchronous(true); 5857 mHandler.sendMessage(msg); 5858 } 5859 5860 public void dispatchUnhandledKey(KeyEvent event) { 5861 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5862 // Some fallback keys are decided by the ViewRoot as they might have special 5863 // properties (e.g. are locale aware). These take precedence over fallbacks defined by 5864 // the kcm. 5865 KeyEvent fallbackEvent = getSyntheticFallbackKey(event); 5866 5867 if (fallbackEvent == null) { 5868 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5869 final int keyCode = event.getKeyCode(); 5870 final int metaState = event.getMetaState(); 5871 5872 // Check for fallback actions specified by the key character map. 5873 KeyCharacterMap.FallbackAction fallbackAction = 5874 kcm.getFallbackAction(keyCode, metaState); 5875 if (fallbackAction != null) { 5876 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5877 fallbackEvent = KeyEvent.obtain( 5878 event.getDownTime(), event.getEventTime(), 5879 event.getAction(), fallbackAction.keyCode, 5880 event.getRepeatCount(), fallbackAction.metaState, 5881 event.getDeviceId(), event.getScanCode(), 5882 flags, event.getSource(), null); 5883 fallbackAction.recycle(); 5884 5885 } 5886 } 5887 if (fallbackEvent != null) { 5888 dispatchInputEvent(fallbackEvent); 5889 } 5890 } 5891 } 5892 5893 public void dispatchAppVisibility(boolean visible) { 5894 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5895 msg.arg1 = visible ? 1 : 0; 5896 mHandler.sendMessage(msg); 5897 } 5898 5899 public void dispatchScreenStateChange(boolean on) { 5900 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5901 msg.arg1 = on ? 1 : 0; 5902 mHandler.sendMessage(msg); 5903 } 5904 5905 public void dispatchGetNewSurface() { 5906 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5907 mHandler.sendMessage(msg); 5908 } 5909 5910 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5911 Message msg = Message.obtain(); 5912 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5913 msg.arg1 = hasFocus ? 1 : 0; 5914 msg.arg2 = inTouchMode ? 1 : 0; 5915 mHandler.sendMessage(msg); 5916 } 5917 5918 public void dispatchCloseSystemDialogs(String reason) { 5919 Message msg = Message.obtain(); 5920 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5921 msg.obj = reason; 5922 mHandler.sendMessage(msg); 5923 } 5924 5925 public void dispatchDragEvent(DragEvent event) { 5926 final int what; 5927 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5928 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5929 mHandler.removeMessages(what); 5930 } else { 5931 what = MSG_DISPATCH_DRAG_EVENT; 5932 } 5933 Message msg = mHandler.obtainMessage(what, event); 5934 mHandler.sendMessage(msg); 5935 } 5936 5937 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5938 int localValue, int localChanges) { 5939 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5940 args.seq = seq; 5941 args.globalVisibility = globalVisibility; 5942 args.localValue = localValue; 5943 args.localChanges = localChanges; 5944 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5945 } 5946 5947 public void dispatchDoneAnimating() { 5948 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5949 } 5950 5951 public void dispatchCheckFocus() { 5952 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5953 // This will result in a call to checkFocus() below. 5954 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5955 } 5956 } 5957 5958 /** 5959 * Post a callback to send a 5960 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5961 * This event is send at most once every 5962 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5963 */ 5964 private void postSendWindowContentChangedCallback(View source, int changeType) { 5965 if (mSendWindowContentChangedAccessibilityEvent == null) { 5966 mSendWindowContentChangedAccessibilityEvent = 5967 new SendWindowContentChangedAccessibilityEvent(); 5968 } 5969 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 5970 } 5971 5972 /** 5973 * Remove a posted callback to send a 5974 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5975 */ 5976 private void removeSendWindowContentChangedCallback() { 5977 if (mSendWindowContentChangedAccessibilityEvent != null) { 5978 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5979 } 5980 } 5981 5982 @Override 5983 public boolean showContextMenuForChild(View originalView) { 5984 return false; 5985 } 5986 5987 @Override 5988 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5989 return null; 5990 } 5991 5992 @Override 5993 public void createContextMenu(ContextMenu menu) { 5994 } 5995 5996 @Override 5997 public void childDrawableStateChanged(View child) { 5998 } 5999 6000 @Override 6001 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6002 if (mView == null) { 6003 return false; 6004 } 6005 // Intercept accessibility focus events fired by virtual nodes to keep 6006 // track of accessibility focus position in such nodes. 6007 final int eventType = event.getEventType(); 6008 switch (eventType) { 6009 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6010 final long sourceNodeId = event.getSourceNodeId(); 6011 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6012 sourceNodeId); 6013 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6014 if (source != null) { 6015 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6016 if (provider != null) { 6017 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 6018 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 6019 setAccessibilityFocus(source, node); 6020 } 6021 } 6022 } break; 6023 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6024 final long sourceNodeId = event.getSourceNodeId(); 6025 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6026 sourceNodeId); 6027 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6028 if (source != null) { 6029 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6030 if (provider != null) { 6031 setAccessibilityFocus(null, null); 6032 } 6033 } 6034 } break; 6035 } 6036 mAccessibilityManager.sendAccessibilityEvent(event); 6037 return true; 6038 } 6039 6040 @Override 6041 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6042 postSendWindowContentChangedCallback(source, changeType); 6043 } 6044 6045 @Override 6046 public boolean canResolveLayoutDirection() { 6047 return true; 6048 } 6049 6050 @Override 6051 public boolean isLayoutDirectionResolved() { 6052 return true; 6053 } 6054 6055 @Override 6056 public int getLayoutDirection() { 6057 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6058 } 6059 6060 @Override 6061 public boolean canResolveTextDirection() { 6062 return true; 6063 } 6064 6065 @Override 6066 public boolean isTextDirectionResolved() { 6067 return true; 6068 } 6069 6070 @Override 6071 public int getTextDirection() { 6072 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6073 } 6074 6075 @Override 6076 public boolean canResolveTextAlignment() { 6077 return true; 6078 } 6079 6080 @Override 6081 public boolean isTextAlignmentResolved() { 6082 return true; 6083 } 6084 6085 @Override 6086 public int getTextAlignment() { 6087 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6088 } 6089 6090 private View getCommonPredecessor(View first, View second) { 6091 if (mAttachInfo != null) { 6092 if (mTempHashSet == null) { 6093 mTempHashSet = new HashSet<View>(); 6094 } 6095 HashSet<View> seen = mTempHashSet; 6096 seen.clear(); 6097 View firstCurrent = first; 6098 while (firstCurrent != null) { 6099 seen.add(firstCurrent); 6100 ViewParent firstCurrentParent = firstCurrent.mParent; 6101 if (firstCurrentParent instanceof View) { 6102 firstCurrent = (View) firstCurrentParent; 6103 } else { 6104 firstCurrent = null; 6105 } 6106 } 6107 View secondCurrent = second; 6108 while (secondCurrent != null) { 6109 if (seen.contains(secondCurrent)) { 6110 seen.clear(); 6111 return secondCurrent; 6112 } 6113 ViewParent secondCurrentParent = secondCurrent.mParent; 6114 if (secondCurrentParent instanceof View) { 6115 secondCurrent = (View) secondCurrentParent; 6116 } else { 6117 secondCurrent = null; 6118 } 6119 } 6120 seen.clear(); 6121 } 6122 return null; 6123 } 6124 6125 void checkThread() { 6126 if (mThread != Thread.currentThread()) { 6127 throw new CalledFromWrongThreadException( 6128 "Only the original thread that created a view hierarchy can touch its views."); 6129 } 6130 } 6131 6132 @Override 6133 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6134 // ViewAncestor never intercepts touch event, so this can be a no-op 6135 } 6136 6137 @Override 6138 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6139 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6140 if (rectangle != null) { 6141 mTempRect.set(rectangle); 6142 mTempRect.offset(0, -mCurScrollY); 6143 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6144 try { 6145 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 6146 } catch (RemoteException re) { 6147 /* ignore */ 6148 } 6149 } 6150 return scrolled; 6151 } 6152 6153 @Override 6154 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6155 // Do nothing. 6156 } 6157 6158 void changeCanvasOpacity(boolean opaque) { 6159 // TODO(romainguy): recreate Canvas (software or hardware) to reflect the opacity change. 6160 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6161 } 6162 6163 class TakenSurfaceHolder extends BaseSurfaceHolder { 6164 @Override 6165 public boolean onAllowLockCanvas() { 6166 return mDrawingAllowed; 6167 } 6168 6169 @Override 6170 public void onRelayoutContainer() { 6171 // Not currently interesting -- from changing between fixed and layout size. 6172 } 6173 6174 @Override 6175 public void setFormat(int format) { 6176 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6177 } 6178 6179 @Override 6180 public void setType(int type) { 6181 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6182 } 6183 6184 @Override 6185 public void onUpdateSurface() { 6186 // We take care of format and type changes on our own. 6187 throw new IllegalStateException("Shouldn't be here"); 6188 } 6189 6190 @Override 6191 public boolean isCreating() { 6192 return mIsCreating; 6193 } 6194 6195 @Override 6196 public void setFixedSize(int width, int height) { 6197 throw new UnsupportedOperationException( 6198 "Currently only support sizing from layout"); 6199 } 6200 6201 @Override 6202 public void setKeepScreenOn(boolean screenOn) { 6203 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6204 } 6205 } 6206 6207 static class W extends IWindow.Stub { 6208 private final WeakReference<ViewRootImpl> mViewAncestor; 6209 private final IWindowSession mWindowSession; 6210 6211 W(ViewRootImpl viewAncestor) { 6212 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6213 mWindowSession = viewAncestor.mWindowSession; 6214 } 6215 6216 @Override 6217 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6218 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6219 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6220 if (viewAncestor != null) { 6221 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6222 visibleInsets, reportDraw, newConfig); 6223 } 6224 } 6225 6226 @Override 6227 public void moved(int newX, int newY) { 6228 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6229 if (viewAncestor != null) { 6230 viewAncestor.dispatchMoved(newX, newY); 6231 } 6232 } 6233 6234 @Override 6235 public void dispatchAppVisibility(boolean visible) { 6236 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6237 if (viewAncestor != null) { 6238 viewAncestor.dispatchAppVisibility(visible); 6239 } 6240 } 6241 6242 @Override 6243 public void dispatchScreenState(boolean on) { 6244 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6245 if (viewAncestor != null) { 6246 viewAncestor.dispatchScreenStateChange(on); 6247 } 6248 } 6249 6250 @Override 6251 public void dispatchGetNewSurface() { 6252 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6253 if (viewAncestor != null) { 6254 viewAncestor.dispatchGetNewSurface(); 6255 } 6256 } 6257 6258 @Override 6259 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6260 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6261 if (viewAncestor != null) { 6262 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6263 } 6264 } 6265 6266 private static int checkCallingPermission(String permission) { 6267 try { 6268 return ActivityManagerNative.getDefault().checkPermission( 6269 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6270 } catch (RemoteException e) { 6271 return PackageManager.PERMISSION_DENIED; 6272 } 6273 } 6274 6275 @Override 6276 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6277 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6278 if (viewAncestor != null) { 6279 final View view = viewAncestor.mView; 6280 if (view != null) { 6281 if (checkCallingPermission(Manifest.permission.DUMP) != 6282 PackageManager.PERMISSION_GRANTED) { 6283 throw new SecurityException("Insufficient permissions to invoke" 6284 + " executeCommand() from pid=" + Binder.getCallingPid() 6285 + ", uid=" + Binder.getCallingUid()); 6286 } 6287 6288 OutputStream clientStream = null; 6289 try { 6290 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6291 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6292 } catch (IOException e) { 6293 e.printStackTrace(); 6294 } finally { 6295 if (clientStream != null) { 6296 try { 6297 clientStream.close(); 6298 } catch (IOException e) { 6299 e.printStackTrace(); 6300 } 6301 } 6302 } 6303 } 6304 } 6305 } 6306 6307 @Override 6308 public void closeSystemDialogs(String reason) { 6309 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6310 if (viewAncestor != null) { 6311 viewAncestor.dispatchCloseSystemDialogs(reason); 6312 } 6313 } 6314 6315 @Override 6316 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6317 boolean sync) { 6318 if (sync) { 6319 try { 6320 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6321 } catch (RemoteException e) { 6322 } 6323 } 6324 } 6325 6326 @Override 6327 public void dispatchWallpaperCommand(String action, int x, int y, 6328 int z, Bundle extras, boolean sync) { 6329 if (sync) { 6330 try { 6331 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6332 } catch (RemoteException e) { 6333 } 6334 } 6335 } 6336 6337 /* Drag/drop */ 6338 @Override 6339 public void dispatchDragEvent(DragEvent event) { 6340 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6341 if (viewAncestor != null) { 6342 viewAncestor.dispatchDragEvent(event); 6343 } 6344 } 6345 6346 @Override 6347 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6348 int localValue, int localChanges) { 6349 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6350 if (viewAncestor != null) { 6351 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6352 localValue, localChanges); 6353 } 6354 } 6355 6356 @Override 6357 public void doneAnimating() { 6358 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6359 if (viewAncestor != null) { 6360 viewAncestor.dispatchDoneAnimating(); 6361 } 6362 } 6363 } 6364 6365 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6366 public CalledFromWrongThreadException(String msg) { 6367 super(msg); 6368 } 6369 } 6370 6371 static RunQueue getRunQueue() { 6372 RunQueue rq = sRunQueues.get(); 6373 if (rq != null) { 6374 return rq; 6375 } 6376 rq = new RunQueue(); 6377 sRunQueues.set(rq); 6378 return rq; 6379 } 6380 6381 /** 6382 * The run queue is used to enqueue pending work from Views when no Handler is 6383 * attached. The work is executed during the next call to performTraversals on 6384 * the thread. 6385 * @hide 6386 */ 6387 static final class RunQueue { 6388 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6389 6390 void post(Runnable action) { 6391 postDelayed(action, 0); 6392 } 6393 6394 void postDelayed(Runnable action, long delayMillis) { 6395 HandlerAction handlerAction = new HandlerAction(); 6396 handlerAction.action = action; 6397 handlerAction.delay = delayMillis; 6398 6399 synchronized (mActions) { 6400 mActions.add(handlerAction); 6401 } 6402 } 6403 6404 void removeCallbacks(Runnable action) { 6405 final HandlerAction handlerAction = new HandlerAction(); 6406 handlerAction.action = action; 6407 6408 synchronized (mActions) { 6409 final ArrayList<HandlerAction> actions = mActions; 6410 6411 while (actions.remove(handlerAction)) { 6412 // Keep going 6413 } 6414 } 6415 } 6416 6417 void executeActions(Handler handler) { 6418 synchronized (mActions) { 6419 final ArrayList<HandlerAction> actions = mActions; 6420 final int count = actions.size(); 6421 6422 for (int i = 0; i < count; i++) { 6423 final HandlerAction handlerAction = actions.get(i); 6424 handler.postDelayed(handlerAction.action, handlerAction.delay); 6425 } 6426 6427 actions.clear(); 6428 } 6429 } 6430 6431 private static class HandlerAction { 6432 Runnable action; 6433 long delay; 6434 6435 @Override 6436 public boolean equals(Object o) { 6437 if (this == o) return true; 6438 if (o == null || getClass() != o.getClass()) return false; 6439 6440 HandlerAction that = (HandlerAction) o; 6441 return !(action != null ? !action.equals(that.action) : that.action != null); 6442 6443 } 6444 6445 @Override 6446 public int hashCode() { 6447 int result = action != null ? action.hashCode() : 0; 6448 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6449 return result; 6450 } 6451 } 6452 } 6453 6454 /** 6455 * Class for managing the accessibility interaction connection 6456 * based on the global accessibility state. 6457 */ 6458 final class AccessibilityInteractionConnectionManager 6459 implements AccessibilityStateChangeListener { 6460 @Override 6461 public void onAccessibilityStateChanged(boolean enabled) { 6462 if (enabled) { 6463 ensureConnection(); 6464 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6465 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6466 View focusedView = mView.findFocus(); 6467 if (focusedView != null && focusedView != mView) { 6468 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6469 } 6470 } 6471 } else { 6472 ensureNoConnection(); 6473 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6474 } 6475 } 6476 6477 public void ensureConnection() { 6478 if (mAttachInfo != null) { 6479 final boolean registered = 6480 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6481 if (!registered) { 6482 mAttachInfo.mAccessibilityWindowId = 6483 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6484 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6485 } 6486 } 6487 } 6488 6489 public void ensureNoConnection() { 6490 final boolean registered = 6491 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6492 if (registered) { 6493 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6494 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6495 } 6496 } 6497 } 6498 6499 /** 6500 * This class is an interface this ViewAncestor provides to the 6501 * AccessibilityManagerService to the latter can interact with 6502 * the view hierarchy in this ViewAncestor. 6503 */ 6504 static final class AccessibilityInteractionConnection 6505 extends IAccessibilityInteractionConnection.Stub { 6506 private final WeakReference<ViewRootImpl> mViewRootImpl; 6507 6508 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6509 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6510 } 6511 6512 @Override 6513 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6514 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6515 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6516 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6517 if (viewRootImpl != null && viewRootImpl.mView != null) { 6518 viewRootImpl.getAccessibilityInteractionController() 6519 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6520 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6521 spec); 6522 } else { 6523 // We cannot make the call and notify the caller so it does not wait. 6524 try { 6525 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6526 } catch (RemoteException re) { 6527 /* best effort - ignore */ 6528 } 6529 } 6530 } 6531 6532 @Override 6533 public void performAccessibilityAction(long accessibilityNodeId, int action, 6534 Bundle arguments, int interactionId, 6535 IAccessibilityInteractionConnectionCallback callback, int flags, 6536 int interogatingPid, long interrogatingTid) { 6537 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6538 if (viewRootImpl != null && viewRootImpl.mView != null) { 6539 viewRootImpl.getAccessibilityInteractionController() 6540 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6541 interactionId, callback, flags, interogatingPid, interrogatingTid); 6542 } else { 6543 // We cannot make the call and notify the caller so it does not wait. 6544 try { 6545 callback.setPerformAccessibilityActionResult(false, interactionId); 6546 } catch (RemoteException re) { 6547 /* best effort - ignore */ 6548 } 6549 } 6550 } 6551 6552 @Override 6553 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6554 String viewId, int interactionId, 6555 IAccessibilityInteractionConnectionCallback callback, int flags, 6556 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6557 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6558 if (viewRootImpl != null && viewRootImpl.mView != null) { 6559 viewRootImpl.getAccessibilityInteractionController() 6560 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6561 viewId, interactionId, callback, flags, interrogatingPid, 6562 interrogatingTid, spec); 6563 } else { 6564 // We cannot make the call and notify the caller so it does not wait. 6565 try { 6566 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6567 } catch (RemoteException re) { 6568 /* best effort - ignore */ 6569 } 6570 } 6571 } 6572 6573 @Override 6574 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6575 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6576 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6577 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6578 if (viewRootImpl != null && viewRootImpl.mView != null) { 6579 viewRootImpl.getAccessibilityInteractionController() 6580 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6581 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6582 spec); 6583 } else { 6584 // We cannot make the call and notify the caller so it does not wait. 6585 try { 6586 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6587 } catch (RemoteException re) { 6588 /* best effort - ignore */ 6589 } 6590 } 6591 } 6592 6593 @Override 6594 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6595 IAccessibilityInteractionConnectionCallback callback, int flags, 6596 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6597 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6598 if (viewRootImpl != null && viewRootImpl.mView != null) { 6599 viewRootImpl.getAccessibilityInteractionController() 6600 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6601 flags, interrogatingPid, interrogatingTid, spec); 6602 } else { 6603 // We cannot make the call and notify the caller so it does not wait. 6604 try { 6605 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6606 } catch (RemoteException re) { 6607 /* best effort - ignore */ 6608 } 6609 } 6610 } 6611 6612 @Override 6613 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6614 IAccessibilityInteractionConnectionCallback callback, int flags, 6615 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6616 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6617 if (viewRootImpl != null && viewRootImpl.mView != null) { 6618 viewRootImpl.getAccessibilityInteractionController() 6619 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6620 callback, flags, interrogatingPid, interrogatingTid, spec); 6621 } else { 6622 // We cannot make the call and notify the caller so it does not wait. 6623 try { 6624 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6625 } catch (RemoteException re) { 6626 /* best effort - ignore */ 6627 } 6628 } 6629 } 6630 } 6631 6632 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6633 private int mChangeTypes = 0; 6634 6635 public View mSource; 6636 public long mLastEventTimeMillis; 6637 6638 @Override 6639 public void run() { 6640 // The accessibility may be turned off while we were waiting so check again. 6641 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6642 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6643 AccessibilityEvent event = AccessibilityEvent.obtain(); 6644 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6645 event.setContentChangeTypes(mChangeTypes); 6646 mSource.sendAccessibilityEventUnchecked(event); 6647 } else { 6648 mLastEventTimeMillis = 0; 6649 } 6650 // In any case reset to initial state. 6651 mSource.resetSubtreeAccessibilityStateChanged(); 6652 mSource = null; 6653 mChangeTypes = 0; 6654 } 6655 6656 public void runOrPost(View source, int changeType) { 6657 if (mSource != null) { 6658 // If there is no common predecessor, then mSource points to 6659 // a removed view, hence in this case always prefer the source. 6660 View predecessor = getCommonPredecessor(mSource, source); 6661 mSource = (predecessor != null) ? predecessor : source; 6662 mChangeTypes |= changeType; 6663 return; 6664 } 6665 mSource = source; 6666 mChangeTypes = changeType; 6667 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6668 final long minEventIntevalMillis = 6669 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6670 if (timeSinceLastMillis >= minEventIntevalMillis) { 6671 mSource.removeCallbacks(this); 6672 run(); 6673 } else { 6674 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6675 } 6676 } 6677 } 6678} 6679