ViewRootImpl.java revision 3b748a44c6bd2ea05fe16839caf73dbe50bd7ae9
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.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.media.AudioManager; 40import android.os.Binder; 41import android.os.Bundle; 42import android.os.Debug; 43import android.os.Handler; 44import android.os.Looper; 45import android.os.Message; 46import android.os.ParcelFileDescriptor; 47import android.os.PowerManager; 48import android.os.Process; 49import android.os.RemoteException; 50import android.os.SystemClock; 51import android.os.SystemProperties; 52import android.os.Trace; 53import android.util.AndroidRuntimeException; 54import android.util.DisplayMetrics; 55import android.util.Log; 56import android.util.Slog; 57import android.util.TypedValue; 58import android.view.View.AttachInfo; 59import android.view.View.MeasureSpec; 60import android.view.accessibility.AccessibilityEvent; 61import android.view.accessibility.AccessibilityManager; 62import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 63import android.view.accessibility.AccessibilityNodeInfo; 64import android.view.accessibility.AccessibilityNodeProvider; 65import android.view.accessibility.IAccessibilityInteractionConnection; 66import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 67import android.view.animation.AccelerateDecelerateInterpolator; 68import android.view.animation.Interpolator; 69import android.view.inputmethod.InputConnection; 70import android.view.inputmethod.InputMethodManager; 71import android.widget.Scroller; 72 73import com.android.internal.R; 74import com.android.internal.os.SomeArgs; 75import com.android.internal.policy.PolicyManager; 76import com.android.internal.view.BaseSurfaceHolder; 77import com.android.internal.view.RootViewSurfaceTaker; 78 79import java.io.IOException; 80import java.io.OutputStream; 81import java.lang.ref.WeakReference; 82import java.util.ArrayList; 83import java.util.HashSet; 84 85/** 86 * The top of a view hierarchy, implementing the needed protocol between View 87 * and the WindowManager. This is for the most part an internal implementation 88 * detail of {@link WindowManagerGlobal}. 89 * 90 * {@hide} 91 */ 92@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 93public final class ViewRootImpl implements ViewParent, 94 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 95 private static final String TAG = "ViewRootImpl"; 96 private static final boolean DBG = false; 97 private static final boolean LOCAL_LOGV = false; 98 /** @noinspection PointlessBooleanExpression*/ 99 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 100 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 101 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 102 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 103 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 104 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 105 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 106 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 107 private static final boolean DEBUG_FPS = false; 108 private static final boolean DEBUG_INPUT_PROCESSING = false || LOCAL_LOGV; 109 110 /** 111 * Set this system property to true to force the view hierarchy to render 112 * at 60 Hz. This can be used to measure the potential framerate. 113 */ 114 private static final String PROPERTY_PROFILE_RENDERING = "viewancestor.profile_rendering"; 115 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 116 117 /** 118 * Maximum time we allow the user to roll the trackball enough to generate 119 * a key event, before resetting the counters. 120 */ 121 static final int MAX_TRACKBALL_DELAY = 250; 122 123 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 124 125 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 126 static boolean sFirstDrawComplete = false; 127 128 static final ArrayList<ComponentCallbacks> sConfigCallbacks 129 = new ArrayList<ComponentCallbacks>(); 130 131 final Context mContext; 132 final IWindowSession mWindowSession; 133 final Display mDisplay; 134 final String mBasePackageName; 135 136 final int[] mTmpLocation = new int[2]; 137 138 final TypedValue mTmpValue = new TypedValue(); 139 140 final Thread mThread; 141 142 final WindowLeaked mLocation; 143 144 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 145 146 final W mWindow; 147 148 final int mTargetSdkVersion; 149 150 int mSeq; 151 152 View mView; 153 154 View mAccessibilityFocusedHost; 155 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 156 157 int mViewVisibility; 158 boolean mAppVisible = true; 159 int mOrigWindowType = -1; 160 161 // Set to true if the owner of this window is in the stopped state, 162 // so the window should no longer be active. 163 boolean mStopped = false; 164 165 boolean mLastInCompatMode = false; 166 167 SurfaceHolder.Callback2 mSurfaceHolderCallback; 168 BaseSurfaceHolder mSurfaceHolder; 169 boolean mIsCreating; 170 boolean mDrawingAllowed; 171 172 final Region mTransparentRegion; 173 final Region mPreviousTransparentRegion; 174 175 int mWidth; 176 int mHeight; 177 Rect mDirty; 178 final Rect mCurrentDirty = new Rect(); 179 boolean mIsAnimating; 180 181 CompatibilityInfo.Translator mTranslator; 182 183 final View.AttachInfo mAttachInfo; 184 InputChannel mInputChannel; 185 InputQueue.Callback mInputQueueCallback; 186 InputQueue mInputQueue; 187 FallbackEventHandler mFallbackEventHandler; 188 Choreographer mChoreographer; 189 190 final Rect mTempRect; // used in the transaction to not thrash the heap. 191 final Rect mVisRect; // used to retrieve visible rect of focused view. 192 193 boolean mTraversalScheduled; 194 int mTraversalBarrier; 195 boolean mWillDrawSoon; 196 /** Set to true while in performTraversals for detecting when die(true) is called from internal 197 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 198 boolean mIsInTraversal; 199 boolean mFitSystemWindowsRequested; 200 boolean mLayoutRequested; 201 boolean mFirst; 202 boolean mReportNextDraw; 203 boolean mFullRedrawNeeded; 204 boolean mNewSurfaceNeeded; 205 boolean mHasHadWindowFocus; 206 boolean mLastWasImTarget; 207 boolean mWindowsAnimating; 208 boolean mIsDrawing; 209 int mLastSystemUiVisibility; 210 int mClientWindowLayoutFlags; 211 boolean mLastOverscanRequested; 212 213 // Pool of queued input events. 214 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 215 private QueuedInputEvent mQueuedInputEventPool; 216 private int mQueuedInputEventPoolSize; 217 218 /* Input event queue. 219 * Pending input events are input events waiting to be delivered to the input stages 220 * and handled by the application. 221 */ 222 QueuedInputEvent mPendingInputEventHead; 223 QueuedInputEvent mPendingInputEventTail; 224 int mPendingInputEventCount; 225 boolean mProcessInputEventsScheduled; 226 String mPendingInputEventQueueLengthCounterName = "pq"; 227 228 InputStage mFirstInputStage; 229 InputStage mFirstPostImeInputStage; 230 231 boolean mWindowAttributesChanged = false; 232 int mWindowAttributesChangesFlag = 0; 233 234 // These can be accessed by any thread, must be protected with a lock. 235 // Surface can never be reassigned or cleared (use Surface.clear()). 236 private final Surface mSurface = new Surface(); 237 238 boolean mAdded; 239 boolean mAddedTouchMode; 240 241 final CompatibilityInfoHolder mCompatibilityInfo; 242 243 // These are accessed by multiple threads. 244 final Rect mWinFrame; // frame given by window manager. 245 246 final Rect mPendingOverscanInsets = new Rect(); 247 final Rect mPendingVisibleInsets = new Rect(); 248 final Rect mPendingContentInsets = new Rect(); 249 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 250 = new ViewTreeObserver.InternalInsetsInfo(); 251 252 final Rect mFitSystemWindowsInsets = new Rect(); 253 254 final Configuration mLastConfiguration = new Configuration(); 255 final Configuration mPendingConfiguration = new Configuration(); 256 257 boolean mScrollMayChange; 258 int mSoftInputMode; 259 WeakReference<View> mLastScrolledFocus; 260 int mScrollY; 261 int mCurScrollY; 262 Scroller mScroller; 263 HardwareLayer mResizeBuffer; 264 long mResizeBufferStartTime; 265 int mResizeBufferDuration; 266 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 267 private ArrayList<LayoutTransition> mPendingTransitions; 268 269 final ViewConfiguration mViewConfiguration; 270 271 /* Drag/drop */ 272 ClipDescription mDragDescription; 273 View mCurrentDragView; 274 volatile Object mLocalDragState; 275 final PointF mDragPoint = new PointF(); 276 final PointF mLastTouchPoint = new PointF(); 277 278 private boolean mProfileRendering; 279 private Choreographer.FrameCallback mRenderProfiler; 280 private boolean mRenderProfilingEnabled; 281 282 private boolean mMediaDisabled; 283 284 // Variables to track frames per second, enabled via DEBUG_FPS flag 285 private long mFpsStartTime = -1; 286 private long mFpsPrevTime = -1; 287 private int mFpsNumFrames; 288 289 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 290 291 /** 292 * see {@link #playSoundEffect(int)} 293 */ 294 AudioManager mAudioManager; 295 296 final AccessibilityManager mAccessibilityManager; 297 298 AccessibilityInteractionController mAccessibilityInteractionController; 299 300 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 301 302 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 303 304 HashSet<View> mTempHashSet; 305 306 private final int mDensity; 307 private final int mNoncompatDensity; 308 309 private boolean mInLayout = false; 310 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 311 boolean mHandlingLayoutInLayoutRequest = false; 312 313 private int mViewLayoutDirectionInitial; 314 315 /** 316 * Consistency verifier for debugging purposes. 317 */ 318 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 319 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 320 new InputEventConsistencyVerifier(this, 0) : null; 321 322 static final class SystemUiVisibilityInfo { 323 int seq; 324 int globalVisibility; 325 int localValue; 326 int localChanges; 327 } 328 329 public ViewRootImpl(Context context, Display display) { 330 mContext = context; 331 mWindowSession = WindowManagerGlobal.getWindowSession(); 332 mDisplay = display; 333 mBasePackageName = context.getBasePackageName(); 334 335 CompatibilityInfoHolder cih = display.getCompatibilityInfo(); 336 mCompatibilityInfo = cih != null ? cih : new CompatibilityInfoHolder(); 337 338 mThread = Thread.currentThread(); 339 mLocation = new WindowLeaked(null); 340 mLocation.fillInStackTrace(); 341 mWidth = -1; 342 mHeight = -1; 343 mDirty = new Rect(); 344 mTempRect = new Rect(); 345 mVisRect = new Rect(); 346 mWinFrame = new Rect(); 347 mWindow = new W(this); 348 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 349 mViewVisibility = View.GONE; 350 mTransparentRegion = new Region(); 351 mPreviousTransparentRegion = new Region(); 352 mFirst = true; // true for the first time the view is added 353 mAdded = false; 354 mAccessibilityManager = AccessibilityManager.getInstance(context); 355 mAccessibilityInteractionConnectionManager = 356 new AccessibilityInteractionConnectionManager(); 357 mAccessibilityManager.addAccessibilityStateChangeListener( 358 mAccessibilityInteractionConnectionManager); 359 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 360 mViewConfiguration = ViewConfiguration.get(context); 361 mDensity = context.getResources().getDisplayMetrics().densityDpi; 362 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 363 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 364 mChoreographer = Choreographer.getInstance(); 365 366 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 367 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 368 loadSystemProperties(); 369 } 370 371 public static void addFirstDrawHandler(Runnable callback) { 372 synchronized (sFirstDrawHandlers) { 373 if (!sFirstDrawComplete) { 374 sFirstDrawHandlers.add(callback); 375 } 376 } 377 } 378 379 public static void addConfigCallback(ComponentCallbacks callback) { 380 synchronized (sConfigCallbacks) { 381 sConfigCallbacks.add(callback); 382 } 383 } 384 385 // FIXME for perf testing only 386 private boolean mProfile = false; 387 388 /** 389 * Call this to profile the next traversal call. 390 * FIXME for perf testing only. Remove eventually 391 */ 392 public void profile() { 393 mProfile = true; 394 } 395 396 /** 397 * Indicates whether we are in touch mode. Calling this method triggers an IPC 398 * call and should be avoided whenever possible. 399 * 400 * @return True, if the device is in touch mode, false otherwise. 401 * 402 * @hide 403 */ 404 static boolean isInTouchMode() { 405 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 406 if (windowSession != null) { 407 try { 408 return windowSession.getInTouchMode(); 409 } catch (RemoteException e) { 410 } 411 } 412 return false; 413 } 414 415 /** 416 * We have one child 417 */ 418 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 419 synchronized (this) { 420 if (mView == null) { 421 mView = view; 422 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 423 mFallbackEventHandler.setView(view); 424 mWindowAttributes.copyFrom(attrs); 425 if (mWindowAttributes.packageName == null) { 426 mWindowAttributes.packageName = mBasePackageName; 427 } 428 attrs = mWindowAttributes; 429 // Keep track of the actual window flags supplied by the client. 430 mClientWindowLayoutFlags = attrs.flags; 431 432 setAccessibilityFocus(null, null); 433 434 if (view instanceof RootViewSurfaceTaker) { 435 mSurfaceHolderCallback = 436 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 437 if (mSurfaceHolderCallback != null) { 438 mSurfaceHolder = new TakenSurfaceHolder(); 439 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 440 } 441 } 442 443 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 444 mTranslator = compatibilityInfo.getTranslator(); 445 446 // If the application owns the surface, don't enable hardware acceleration 447 if (mSurfaceHolder == null) { 448 enableHardwareAcceleration(attrs); 449 } 450 451 boolean restore = false; 452 if (mTranslator != null) { 453 mSurface.setCompatibilityTranslator(mTranslator); 454 restore = true; 455 attrs.backup(); 456 mTranslator.translateWindowLayout(attrs); 457 } 458 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 459 460 if (!compatibilityInfo.supportsScreen()) { 461 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 462 mLastInCompatMode = true; 463 } 464 465 mSoftInputMode = attrs.softInputMode; 466 mWindowAttributesChanged = true; 467 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 468 mAttachInfo.mRootView = view; 469 mAttachInfo.mScalingRequired = mTranslator != null; 470 mAttachInfo.mApplicationScale = 471 mTranslator == null ? 1.0f : mTranslator.applicationScale; 472 if (panelParentView != null) { 473 mAttachInfo.mPanelParentWindowToken 474 = panelParentView.getApplicationWindowToken(); 475 } 476 mAdded = true; 477 int res; /* = WindowManagerImpl.ADD_OKAY; */ 478 479 // Schedule the first layout -before- adding to the window 480 // manager, to make sure we do the relayout before receiving 481 // any other events from the system. 482 requestLayout(); 483 if ((mWindowAttributes.inputFeatures 484 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 485 mInputChannel = new InputChannel(); 486 } 487 try { 488 mOrigWindowType = mWindowAttributes.type; 489 mAttachInfo.mRecomputeGlobalAttributes = true; 490 collectViewAttributes(); 491 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 492 getHostVisibility(), mDisplay.getDisplayId(), 493 mAttachInfo.mContentInsets, mInputChannel); 494 } catch (RemoteException e) { 495 mAdded = false; 496 mView = null; 497 mAttachInfo.mRootView = null; 498 mInputChannel = null; 499 mFallbackEventHandler.setView(null); 500 unscheduleTraversals(); 501 setAccessibilityFocus(null, null); 502 throw new RuntimeException("Adding window failed", e); 503 } finally { 504 if (restore) { 505 attrs.restore(); 506 } 507 } 508 509 if (mTranslator != null) { 510 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 511 } 512 mPendingOverscanInsets.set(0, 0, 0, 0); 513 mPendingContentInsets.set(mAttachInfo.mContentInsets); 514 mPendingVisibleInsets.set(0, 0, 0, 0); 515 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 516 if (res < WindowManagerGlobal.ADD_OKAY) { 517 mAttachInfo.mRootView = null; 518 mAdded = false; 519 mFallbackEventHandler.setView(null); 520 unscheduleTraversals(); 521 setAccessibilityFocus(null, null); 522 switch (res) { 523 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 524 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 525 throw new WindowManager.BadTokenException( 526 "Unable to add window -- token " + attrs.token 527 + " is not valid; is your activity running?"); 528 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 529 throw new WindowManager.BadTokenException( 530 "Unable to add window -- token " + attrs.token 531 + " is not for an application"); 532 case WindowManagerGlobal.ADD_APP_EXITING: 533 throw new WindowManager.BadTokenException( 534 "Unable to add window -- app for token " + attrs.token 535 + " is exiting"); 536 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 537 throw new WindowManager.BadTokenException( 538 "Unable to add window -- window " + mWindow 539 + " has already been added"); 540 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 541 // Silently ignore -- we would have just removed it 542 // right away, anyway. 543 return; 544 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 545 throw new WindowManager.BadTokenException( 546 "Unable to add window " + mWindow + 547 " -- another window of this type already exists"); 548 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 549 throw new WindowManager.BadTokenException( 550 "Unable to add window " + mWindow + 551 " -- permission denied for this window type"); 552 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 553 throw new WindowManager.InvalidDisplayException( 554 "Unable to add window " + mWindow + 555 " -- the specified display can not be found"); 556 } 557 throw new RuntimeException( 558 "Unable to add window -- unknown error code " + res); 559 } 560 561 if (view instanceof RootViewSurfaceTaker) { 562 mInputQueueCallback = 563 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 564 } 565 if (mInputChannel != null) { 566 if (mInputQueueCallback != null) { 567 mInputQueue = new InputQueue(); 568 mInputQueueCallback.onInputQueueCreated(mInputQueue); 569 } 570 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 571 Looper.myLooper()); 572 } 573 574 view.assignParent(this); 575 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 576 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 577 578 if (mAccessibilityManager.isEnabled()) { 579 mAccessibilityInteractionConnectionManager.ensureConnection(); 580 } 581 582 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 583 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 584 } 585 586 // Set up the input pipeline. 587 CharSequence counterSuffix = attrs.getTitle(); 588 InputStage syntheticStage = new SyntheticInputStage(); 589 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticStage); 590 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 591 "aq:native-post-ime:" + counterSuffix); 592 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 593 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 594 "aq:ime:" + counterSuffix); 595 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 596 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 597 "aq:native-pre-ime:" + counterSuffix); 598 599 mFirstInputStage = nativePreImeStage; 600 mFirstPostImeInputStage = earlyPostImeStage; 601 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 602 } 603 } 604 } 605 606 void destroyHardwareResources() { 607 if (mAttachInfo.mHardwareRenderer != null) { 608 if (mAttachInfo.mHardwareRenderer.isEnabled()) { 609 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 610 } 611 mAttachInfo.mHardwareRenderer.destroy(false); 612 } 613 } 614 615 void terminateHardwareResources() { 616 if (mAttachInfo.mHardwareRenderer != null) { 617 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 618 mAttachInfo.mHardwareRenderer.destroy(false); 619 } 620 } 621 622 void destroyHardwareLayers() { 623 if (mThread != Thread.currentThread()) { 624 if (mAttachInfo.mHardwareRenderer != null && 625 mAttachInfo.mHardwareRenderer.isEnabled()) { 626 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 627 } 628 } else { 629 if (mAttachInfo.mHardwareRenderer != null && 630 mAttachInfo.mHardwareRenderer.isEnabled()) { 631 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 632 } 633 } 634 } 635 636 void pushHardwareLayerUpdate(HardwareLayer layer) { 637 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 638 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 639 } 640 } 641 642 public boolean attachFunctor(int functor) { 643 //noinspection SimplifiableIfStatement 644 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 645 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 646 } 647 return false; 648 } 649 650 public void detachFunctor(int functor) { 651 if (mAttachInfo.mHardwareRenderer != null) { 652 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 653 } 654 } 655 656 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 657 mAttachInfo.mHardwareAccelerated = false; 658 mAttachInfo.mHardwareAccelerationRequested = false; 659 660 // Don't enable hardware acceleration when the application is in compatibility mode 661 if (mTranslator != null) return; 662 663 // Try to enable hardware acceleration if requested 664 final boolean hardwareAccelerated = 665 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 666 667 if (hardwareAccelerated) { 668 if (!HardwareRenderer.isAvailable()) { 669 return; 670 } 671 672 // Persistent processes (including the system) should not do 673 // accelerated rendering on low-end devices. In that case, 674 // sRendererDisabled will be set. In addition, the system process 675 // itself should never do accelerated rendering. In that case, both 676 // sRendererDisabled and sSystemRendererDisabled are set. When 677 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 678 // can be used by code on the system process to escape that and enable 679 // HW accelerated drawing. (This is basically for the lock screen.) 680 681 final boolean fakeHwAccelerated = (attrs.privateFlags & 682 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 683 final boolean forceHwAccelerated = (attrs.privateFlags & 684 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 685 686 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 687 && forceHwAccelerated)) { 688 // Don't enable hardware acceleration when we're not on the main thread 689 if (!HardwareRenderer.sSystemRendererDisabled && 690 Looper.getMainLooper() != Looper.myLooper()) { 691 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 692 + "acceleration outside of the main thread, aborting"); 693 return; 694 } 695 696 if (mAttachInfo.mHardwareRenderer != null) { 697 mAttachInfo.mHardwareRenderer.destroy(true); 698 } 699 700 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 701 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 702 if (mAttachInfo.mHardwareRenderer != null) { 703 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 704 mAttachInfo.mHardwareAccelerated = 705 mAttachInfo.mHardwareAccelerationRequested = true; 706 } 707 } else if (fakeHwAccelerated) { 708 // The window had wanted to use hardware acceleration, but this 709 // is not allowed in its process. By setting this flag, it can 710 // still render as if it was accelerated. This is basically for 711 // the preview windows the window manager shows for launching 712 // applications, so they will look more like the app being launched. 713 mAttachInfo.mHardwareAccelerationRequested = true; 714 } 715 } 716 } 717 718 public View getView() { 719 return mView; 720 } 721 722 final WindowLeaked getLocation() { 723 return mLocation; 724 } 725 726 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 727 synchronized (this) { 728 int oldSoftInputMode = mWindowAttributes.softInputMode; 729 // Keep track of the actual window flags supplied by the client. 730 mClientWindowLayoutFlags = attrs.flags; 731 // preserve compatible window flag if exists. 732 int compatibleWindowFlag = 733 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 734 // transfer over system UI visibility values as they carry current state. 735 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 736 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 737 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 738 if (mWindowAttributes.packageName == null) { 739 mWindowAttributes.packageName = mBasePackageName; 740 } 741 mWindowAttributes.flags |= compatibleWindowFlag; 742 743 applyKeepScreenOnFlag(mWindowAttributes); 744 745 if (newView) { 746 mSoftInputMode = attrs.softInputMode; 747 requestLayout(); 748 } 749 // Don't lose the mode we last auto-computed. 750 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 751 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 752 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 753 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 754 | (oldSoftInputMode 755 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 756 } 757 mWindowAttributesChanged = true; 758 scheduleTraversals(); 759 } 760 } 761 762 void handleAppVisibility(boolean visible) { 763 if (mAppVisible != visible) { 764 mAppVisible = visible; 765 scheduleTraversals(); 766 } 767 } 768 769 void handleGetNewSurface() { 770 mNewSurfaceNeeded = true; 771 mFullRedrawNeeded = true; 772 scheduleTraversals(); 773 } 774 775 void handleScreenStateChange(boolean on) { 776 if (on != mAttachInfo.mScreenOn) { 777 mAttachInfo.mScreenOn = on; 778 if (mView != null) { 779 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 780 } 781 if (on) { 782 mFullRedrawNeeded = true; 783 scheduleTraversals(); 784 } 785 } 786 } 787 788 @Override 789 public void requestFitSystemWindows() { 790 checkThread(); 791 mFitSystemWindowsRequested = true; 792 scheduleTraversals(); 793 } 794 795 @Override 796 public void requestLayout() { 797 if (!mHandlingLayoutInLayoutRequest) { 798 checkThread(); 799 mLayoutRequested = true; 800 scheduleTraversals(); 801 } 802 } 803 804 @Override 805 public boolean isLayoutRequested() { 806 return mLayoutRequested; 807 } 808 809 void invalidate() { 810 mDirty.set(0, 0, mWidth, mHeight); 811 scheduleTraversals(); 812 } 813 814 void invalidateWorld(View view) { 815 view.invalidate(); 816 if (view instanceof ViewGroup) { 817 ViewGroup parent = (ViewGroup) view; 818 for (int i = 0; i < parent.getChildCount(); i++) { 819 invalidateWorld(parent.getChildAt(i)); 820 } 821 } 822 } 823 824 @Override 825 public void invalidateChild(View child, Rect dirty) { 826 invalidateChildInParent(null, dirty); 827 } 828 829 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 830 checkThread(); 831 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 832 833 if (dirty == null) { 834 invalidate(); 835 return null; 836 } else if (dirty.isEmpty() && !mIsAnimating) { 837 return null; 838 } 839 840 if (mCurScrollY != 0 || mTranslator != null) { 841 mTempRect.set(dirty); 842 dirty = mTempRect; 843 if (mCurScrollY != 0) { 844 dirty.offset(0, -mCurScrollY); 845 } 846 if (mTranslator != null) { 847 mTranslator.translateRectInAppWindowToScreen(dirty); 848 } 849 if (mAttachInfo.mScalingRequired) { 850 dirty.inset(-1, -1); 851 } 852 } 853 854 final Rect localDirty = mDirty; 855 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 856 mAttachInfo.mSetIgnoreDirtyState = true; 857 mAttachInfo.mIgnoreDirtyState = true; 858 } 859 860 // Add the new dirty rect to the current one 861 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 862 // Intersect with the bounds of the window to skip 863 // updates that lie outside of the visible region 864 final float appScale = mAttachInfo.mApplicationScale; 865 final boolean intersected = localDirty.intersect(0, 0, 866 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 867 if (!intersected) { 868 localDirty.setEmpty(); 869 } 870 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 871 scheduleTraversals(); 872 } 873 874 return null; 875 } 876 877 void setStopped(boolean stopped) { 878 if (mStopped != stopped) { 879 mStopped = stopped; 880 if (!stopped) { 881 scheduleTraversals(); 882 } 883 } 884 } 885 886 public ViewParent getParent() { 887 return null; 888 } 889 890 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 891 if (child != mView) { 892 throw new RuntimeException("child is not mine, honest!"); 893 } 894 // Note: don't apply scroll offset, because we want to know its 895 // visibility in the virtual canvas being given to the view hierarchy. 896 return r.intersect(0, 0, mWidth, mHeight); 897 } 898 899 public void bringChildToFront(View child) { 900 } 901 902 int getHostVisibility() { 903 return mAppVisible ? mView.getVisibility() : View.GONE; 904 } 905 906 void disposeResizeBuffer() { 907 if (mResizeBuffer != null) { 908 mResizeBuffer.destroy(); 909 mResizeBuffer = null; 910 } 911 } 912 913 /** 914 * Add LayoutTransition to the list of transitions to be started in the next traversal. 915 * This list will be cleared after the transitions on the list are start()'ed. These 916 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 917 * happens during the layout phase of traversal, which we want to complete before any of the 918 * animations are started (because those animations may side-effect properties that layout 919 * depends upon, like the bounding rectangles of the affected views). So we add the transition 920 * to the list and it is started just prior to starting the drawing phase of traversal. 921 * 922 * @param transition The LayoutTransition to be started on the next traversal. 923 * 924 * @hide 925 */ 926 public void requestTransitionStart(LayoutTransition transition) { 927 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 928 if (mPendingTransitions == null) { 929 mPendingTransitions = new ArrayList<LayoutTransition>(); 930 } 931 mPendingTransitions.add(transition); 932 } 933 } 934 935 void scheduleTraversals() { 936 if (!mTraversalScheduled) { 937 mTraversalScheduled = true; 938 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 939 mChoreographer.postCallback( 940 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 941 scheduleConsumeBatchedInput(); 942 } 943 } 944 945 void unscheduleTraversals() { 946 if (mTraversalScheduled) { 947 mTraversalScheduled = false; 948 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 949 mChoreographer.removeCallbacks( 950 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 951 } 952 } 953 954 void doTraversal() { 955 if (mTraversalScheduled) { 956 mTraversalScheduled = false; 957 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 958 959 if (mProfile) { 960 Debug.startMethodTracing("ViewAncestor"); 961 } 962 963 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 964 try { 965 performTraversals(); 966 } finally { 967 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 968 } 969 970 if (mProfile) { 971 Debug.stopMethodTracing(); 972 mProfile = false; 973 } 974 } 975 } 976 977 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 978 // Update window's global keep screen on flag: if a view has requested 979 // that the screen be kept on, then it is always set; otherwise, it is 980 // set to whatever the client last requested for the global state. 981 if (mAttachInfo.mKeepScreenOn) { 982 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 983 } else { 984 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 985 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 986 } 987 } 988 989 private boolean collectViewAttributes() { 990 final View.AttachInfo attachInfo = mAttachInfo; 991 if (attachInfo.mRecomputeGlobalAttributes) { 992 //Log.i(TAG, "Computing view hierarchy attributes!"); 993 attachInfo.mRecomputeGlobalAttributes = false; 994 boolean oldScreenOn = attachInfo.mKeepScreenOn; 995 attachInfo.mKeepScreenOn = false; 996 attachInfo.mSystemUiVisibility = 0; 997 attachInfo.mHasSystemUiListeners = false; 998 mView.dispatchCollectViewAttributes(attachInfo, 0); 999 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1000 WindowManager.LayoutParams params = mWindowAttributes; 1001 if (attachInfo.mKeepScreenOn != oldScreenOn 1002 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1003 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1004 applyKeepScreenOnFlag(params); 1005 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1006 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1007 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1008 return true; 1009 } 1010 } 1011 return false; 1012 } 1013 1014 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1015 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1016 int childWidthMeasureSpec; 1017 int childHeightMeasureSpec; 1018 boolean windowSizeMayChange = false; 1019 1020 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1021 "Measuring " + host + " in display " + desiredWindowWidth 1022 + "x" + desiredWindowHeight + "..."); 1023 1024 boolean goodMeasure = false; 1025 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1026 // On large screens, we don't want to allow dialogs to just 1027 // stretch to fill the entire width of the screen to display 1028 // one line of text. First try doing the layout at a smaller 1029 // size to see if it will fit. 1030 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1031 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1032 int baseSize = 0; 1033 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1034 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1035 } 1036 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1037 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1038 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1039 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1040 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1041 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1042 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1043 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1044 goodMeasure = true; 1045 } else { 1046 // Didn't fit in that size... try expanding a bit. 1047 baseSize = (baseSize+desiredWindowWidth)/2; 1048 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1049 + baseSize); 1050 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1051 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1052 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1053 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1054 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1055 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1056 goodMeasure = true; 1057 } 1058 } 1059 } 1060 } 1061 1062 if (!goodMeasure) { 1063 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1064 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1065 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1066 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1067 windowSizeMayChange = true; 1068 } 1069 } 1070 1071 if (DBG) { 1072 System.out.println("======================================"); 1073 System.out.println("performTraversals -- after measure"); 1074 host.debug(); 1075 } 1076 1077 return windowSizeMayChange; 1078 } 1079 1080 private void performTraversals() { 1081 // cache mView since it is used so much below... 1082 final View host = mView; 1083 1084 if (DBG) { 1085 System.out.println("======================================"); 1086 System.out.println("performTraversals"); 1087 host.debug(); 1088 } 1089 1090 if (host == null || !mAdded) 1091 return; 1092 1093 mIsInTraversal = true; 1094 mWillDrawSoon = true; 1095 boolean windowSizeMayChange = false; 1096 boolean newSurface = false; 1097 boolean surfaceChanged = false; 1098 WindowManager.LayoutParams lp = mWindowAttributes; 1099 1100 int desiredWindowWidth; 1101 int desiredWindowHeight; 1102 1103 final View.AttachInfo attachInfo = mAttachInfo; 1104 1105 final int viewVisibility = getHostVisibility(); 1106 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1107 || mNewSurfaceNeeded; 1108 1109 WindowManager.LayoutParams params = null; 1110 if (mWindowAttributesChanged) { 1111 mWindowAttributesChanged = false; 1112 surfaceChanged = true; 1113 params = lp; 1114 } 1115 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 1116 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1117 params = lp; 1118 mFullRedrawNeeded = true; 1119 mLayoutRequested = true; 1120 if (mLastInCompatMode) { 1121 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1122 mLastInCompatMode = false; 1123 } else { 1124 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1125 mLastInCompatMode = true; 1126 } 1127 } 1128 1129 mWindowAttributesChangesFlag = 0; 1130 1131 Rect frame = mWinFrame; 1132 if (mFirst) { 1133 mFullRedrawNeeded = true; 1134 mLayoutRequested = true; 1135 1136 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1137 // NOTE -- system code, won't try to do compat mode. 1138 Point size = new Point(); 1139 mDisplay.getRealSize(size); 1140 desiredWindowWidth = size.x; 1141 desiredWindowHeight = size.y; 1142 } else { 1143 DisplayMetrics packageMetrics = 1144 mView.getContext().getResources().getDisplayMetrics(); 1145 desiredWindowWidth = packageMetrics.widthPixels; 1146 desiredWindowHeight = packageMetrics.heightPixels; 1147 } 1148 1149 // For the very first time, tell the view hierarchy that it 1150 // is attached to the window. Note that at this point the surface 1151 // object is not initialized to its backing store, but soon it 1152 // will be (assuming the window is visible). 1153 attachInfo.mSurface = mSurface; 1154 // We used to use the following condition to choose 32 bits drawing caches: 1155 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1156 // However, windows are now always 32 bits by default, so choose 32 bits 1157 attachInfo.mUse32BitDrawingCache = true; 1158 attachInfo.mHasWindowFocus = false; 1159 attachInfo.mWindowVisibility = viewVisibility; 1160 attachInfo.mRecomputeGlobalAttributes = false; 1161 viewVisibilityChanged = false; 1162 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1163 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1164 // Set the layout direction if it has not been set before (inherit is the default) 1165 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1166 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1167 } 1168 host.dispatchAttachedToWindow(attachInfo, 0); 1169 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1170 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1171 host.fitSystemWindows(mFitSystemWindowsInsets); 1172 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1173 1174 } else { 1175 desiredWindowWidth = frame.width(); 1176 desiredWindowHeight = frame.height(); 1177 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1178 if (DEBUG_ORIENTATION) Log.v(TAG, 1179 "View " + host + " resized to: " + frame); 1180 mFullRedrawNeeded = true; 1181 mLayoutRequested = true; 1182 windowSizeMayChange = true; 1183 } 1184 } 1185 1186 if (viewVisibilityChanged) { 1187 attachInfo.mWindowVisibility = viewVisibility; 1188 host.dispatchWindowVisibilityChanged(viewVisibility); 1189 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1190 destroyHardwareResources(); 1191 } 1192 if (viewVisibility == View.GONE) { 1193 // After making a window gone, we will count it as being 1194 // shown for the first time the next time it gets focus. 1195 mHasHadWindowFocus = false; 1196 } 1197 } 1198 1199 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1200 getRunQueue().executeActions(attachInfo.mHandler); 1201 1202 boolean insetsChanged = false; 1203 1204 boolean layoutRequested = mLayoutRequested && !mStopped; 1205 if (layoutRequested) { 1206 1207 final Resources res = mView.getContext().getResources(); 1208 1209 if (mFirst) { 1210 // make sure touch mode code executes by setting cached value 1211 // to opposite of the added touch mode. 1212 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1213 ensureTouchModeLocally(mAddedTouchMode); 1214 } else { 1215 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1216 insetsChanged = true; 1217 } 1218 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1219 insetsChanged = true; 1220 } 1221 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1222 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1223 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1224 + mAttachInfo.mVisibleInsets); 1225 } 1226 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1227 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1228 windowSizeMayChange = true; 1229 1230 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1231 // NOTE -- system code, won't try to do compat mode. 1232 Point size = new Point(); 1233 mDisplay.getRealSize(size); 1234 desiredWindowWidth = size.x; 1235 desiredWindowHeight = size.y; 1236 } else { 1237 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1238 desiredWindowWidth = packageMetrics.widthPixels; 1239 desiredWindowHeight = packageMetrics.heightPixels; 1240 } 1241 } 1242 } 1243 1244 // Ask host how big it wants to be 1245 windowSizeMayChange |= measureHierarchy(host, lp, res, 1246 desiredWindowWidth, desiredWindowHeight); 1247 } 1248 1249 if (collectViewAttributes()) { 1250 params = lp; 1251 } 1252 if (attachInfo.mForceReportNewAttributes) { 1253 attachInfo.mForceReportNewAttributes = false; 1254 params = lp; 1255 } 1256 1257 if (mFirst || attachInfo.mViewVisibilityChanged) { 1258 attachInfo.mViewVisibilityChanged = false; 1259 int resizeMode = mSoftInputMode & 1260 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1261 // If we are in auto resize mode, then we need to determine 1262 // what mode to use now. 1263 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1264 final int N = attachInfo.mScrollContainers.size(); 1265 for (int i=0; i<N; i++) { 1266 if (attachInfo.mScrollContainers.get(i).isShown()) { 1267 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1268 } 1269 } 1270 if (resizeMode == 0) { 1271 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1272 } 1273 if ((lp.softInputMode & 1274 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1275 lp.softInputMode = (lp.softInputMode & 1276 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1277 resizeMode; 1278 params = lp; 1279 } 1280 } 1281 } 1282 1283 if (params != null) { 1284 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1285 if (!PixelFormat.formatHasAlpha(params.format)) { 1286 params.format = PixelFormat.TRANSLUCENT; 1287 } 1288 } 1289 mAttachInfo.mOverscanRequested = (params.flags 1290 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1291 } 1292 1293 if (mFitSystemWindowsRequested) { 1294 mFitSystemWindowsRequested = false; 1295 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1296 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1297 host.fitSystemWindows(mFitSystemWindowsInsets); 1298 if (mLayoutRequested) { 1299 // Short-circuit catching a new layout request here, so 1300 // we don't need to go through two layout passes when things 1301 // change due to fitting system windows, which can happen a lot. 1302 windowSizeMayChange |= measureHierarchy(host, lp, 1303 mView.getContext().getResources(), 1304 desiredWindowWidth, desiredWindowHeight); 1305 } 1306 } 1307 1308 if (layoutRequested) { 1309 // Clear this now, so that if anything requests a layout in the 1310 // rest of this function we will catch it and re-run a full 1311 // layout pass. 1312 mLayoutRequested = false; 1313 } 1314 1315 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1316 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1317 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1318 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1319 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1320 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1321 1322 final boolean computesInternalInsets = 1323 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1324 1325 boolean insetsPending = false; 1326 int relayoutResult = 0; 1327 1328 if (mFirst || windowShouldResize || insetsChanged || 1329 viewVisibilityChanged || params != null) { 1330 1331 if (viewVisibility == View.VISIBLE) { 1332 // If this window is giving internal insets to the window 1333 // manager, and it is being added or changing its visibility, 1334 // then we want to first give the window manager "fake" 1335 // insets to cause it to effectively ignore the content of 1336 // the window during layout. This avoids it briefly causing 1337 // other windows to resize/move based on the raw frame of the 1338 // window, waiting until we can finish laying out this window 1339 // and get back to the window manager with the ultimately 1340 // computed insets. 1341 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1342 } 1343 1344 if (mSurfaceHolder != null) { 1345 mSurfaceHolder.mSurfaceLock.lock(); 1346 mDrawingAllowed = true; 1347 } 1348 1349 boolean hwInitialized = false; 1350 boolean contentInsetsChanged = false; 1351 boolean hadSurface = mSurface.isValid(); 1352 1353 try { 1354 if (DEBUG_LAYOUT) { 1355 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1356 host.getMeasuredHeight() + ", params=" + params); 1357 } 1358 1359 final int surfaceGenerationId = mSurface.getGenerationId(); 1360 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1361 mWindowsAnimating |= 1362 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0; 1363 1364 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1365 + " overscan=" + mPendingOverscanInsets.toShortString() 1366 + " content=" + mPendingContentInsets.toShortString() 1367 + " visible=" + mPendingVisibleInsets.toShortString() 1368 + " surface=" + mSurface); 1369 1370 if (mPendingConfiguration.seq != 0) { 1371 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1372 + mPendingConfiguration); 1373 updateConfiguration(mPendingConfiguration, !mFirst); 1374 mPendingConfiguration.seq = 0; 1375 } 1376 1377 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1378 mAttachInfo.mOverscanInsets); 1379 contentInsetsChanged = !mPendingContentInsets.equals( 1380 mAttachInfo.mContentInsets); 1381 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1382 mAttachInfo.mVisibleInsets); 1383 if (contentInsetsChanged) { 1384 if (mWidth > 0 && mHeight > 0 && lp != null && 1385 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1386 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1387 mSurface != null && mSurface.isValid() && 1388 !mAttachInfo.mTurnOffWindowResizeAnim && 1389 mAttachInfo.mHardwareRenderer != null && 1390 mAttachInfo.mHardwareRenderer.isEnabled() && 1391 mAttachInfo.mHardwareRenderer.validate() && 1392 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1393 1394 disposeResizeBuffer(); 1395 1396 boolean completed = false; 1397 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1398 HardwareCanvas layerCanvas = null; 1399 try { 1400 if (mResizeBuffer == null) { 1401 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1402 mWidth, mHeight, false); 1403 } else if (mResizeBuffer.getWidth() != mWidth || 1404 mResizeBuffer.getHeight() != mHeight) { 1405 mResizeBuffer.resize(mWidth, mHeight); 1406 } 1407 // TODO: should handle create/resize failure 1408 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1409 final int restoreCount = layerCanvas.save(); 1410 1411 int yoff; 1412 final boolean scrolling = mScroller != null 1413 && mScroller.computeScrollOffset(); 1414 if (scrolling) { 1415 yoff = mScroller.getCurrY(); 1416 mScroller.abortAnimation(); 1417 } else { 1418 yoff = mScrollY; 1419 } 1420 1421 layerCanvas.translate(0, -yoff); 1422 if (mTranslator != null) { 1423 mTranslator.translateCanvas(layerCanvas); 1424 } 1425 1426 DisplayList displayList = mView.mDisplayList; 1427 if (displayList != null) { 1428 layerCanvas.drawDisplayList(displayList, null, 1429 DisplayList.FLAG_CLIP_CHILDREN); 1430 } else { 1431 mView.draw(layerCanvas); 1432 } 1433 1434 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1435 1436 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1437 mResizeBufferDuration = mView.getResources().getInteger( 1438 com.android.internal.R.integer.config_mediumAnimTime); 1439 completed = true; 1440 1441 layerCanvas.restoreToCount(restoreCount); 1442 } catch (OutOfMemoryError e) { 1443 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1444 } finally { 1445 if (mResizeBuffer != null) { 1446 mResizeBuffer.end(hwRendererCanvas); 1447 if (!completed) { 1448 mResizeBuffer.destroy(); 1449 mResizeBuffer = null; 1450 } 1451 } 1452 } 1453 } 1454 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1455 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1456 + mAttachInfo.mContentInsets); 1457 } 1458 if (overscanInsetsChanged) { 1459 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1460 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1461 + mAttachInfo.mOverscanInsets); 1462 // Need to relayout with content insets. 1463 contentInsetsChanged = true; 1464 } 1465 if (contentInsetsChanged || mLastSystemUiVisibility != 1466 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1467 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1468 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1469 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1470 mFitSystemWindowsRequested = false; 1471 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1472 host.fitSystemWindows(mFitSystemWindowsInsets); 1473 } 1474 if (visibleInsetsChanged) { 1475 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1476 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1477 + mAttachInfo.mVisibleInsets); 1478 } 1479 1480 if (!hadSurface) { 1481 if (mSurface.isValid()) { 1482 // If we are creating a new surface, then we need to 1483 // completely redraw it. Also, when we get to the 1484 // point of drawing it we will hold off and schedule 1485 // a new traversal instead. This is so we can tell the 1486 // window manager about all of the windows being displayed 1487 // before actually drawing them, so it can display then 1488 // all at once. 1489 newSurface = true; 1490 mFullRedrawNeeded = true; 1491 mPreviousTransparentRegion.setEmpty(); 1492 1493 if (mAttachInfo.mHardwareRenderer != null) { 1494 try { 1495 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1496 mHolder.getSurface()); 1497 } catch (Surface.OutOfResourcesException e) { 1498 handleOutOfResourcesException(e); 1499 return; 1500 } 1501 } 1502 } 1503 } else if (!mSurface.isValid()) { 1504 // If the surface has been removed, then reset the scroll 1505 // positions. 1506 if (mLastScrolledFocus != null) { 1507 mLastScrolledFocus.clear(); 1508 } 1509 mScrollY = mCurScrollY = 0; 1510 if (mScroller != null) { 1511 mScroller.abortAnimation(); 1512 } 1513 disposeResizeBuffer(); 1514 // Our surface is gone 1515 if (mAttachInfo.mHardwareRenderer != null && 1516 mAttachInfo.mHardwareRenderer.isEnabled()) { 1517 mAttachInfo.mHardwareRenderer.destroy(true); 1518 } 1519 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1520 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1521 mFullRedrawNeeded = true; 1522 try { 1523 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1524 } catch (Surface.OutOfResourcesException e) { 1525 handleOutOfResourcesException(e); 1526 return; 1527 } 1528 } 1529 } catch (RemoteException e) { 1530 } 1531 1532 if (DEBUG_ORIENTATION) Log.v( 1533 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1534 1535 attachInfo.mWindowLeft = frame.left; 1536 attachInfo.mWindowTop = frame.top; 1537 1538 // !!FIXME!! This next section handles the case where we did not get the 1539 // window size we asked for. We should avoid this by getting a maximum size from 1540 // the window session beforehand. 1541 if (mWidth != frame.width() || mHeight != frame.height()) { 1542 mWidth = frame.width(); 1543 mHeight = frame.height(); 1544 } 1545 1546 if (mSurfaceHolder != null) { 1547 // The app owns the surface; tell it about what is going on. 1548 if (mSurface.isValid()) { 1549 // XXX .copyFrom() doesn't work! 1550 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1551 mSurfaceHolder.mSurface = mSurface; 1552 } 1553 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1554 mSurfaceHolder.mSurfaceLock.unlock(); 1555 if (mSurface.isValid()) { 1556 if (!hadSurface) { 1557 mSurfaceHolder.ungetCallbacks(); 1558 1559 mIsCreating = true; 1560 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1561 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1562 if (callbacks != null) { 1563 for (SurfaceHolder.Callback c : callbacks) { 1564 c.surfaceCreated(mSurfaceHolder); 1565 } 1566 } 1567 surfaceChanged = true; 1568 } 1569 if (surfaceChanged) { 1570 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1571 lp.format, mWidth, mHeight); 1572 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1573 if (callbacks != null) { 1574 for (SurfaceHolder.Callback c : callbacks) { 1575 c.surfaceChanged(mSurfaceHolder, lp.format, 1576 mWidth, mHeight); 1577 } 1578 } 1579 } 1580 mIsCreating = false; 1581 } else if (hadSurface) { 1582 mSurfaceHolder.ungetCallbacks(); 1583 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1584 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1585 if (callbacks != null) { 1586 for (SurfaceHolder.Callback c : callbacks) { 1587 c.surfaceDestroyed(mSurfaceHolder); 1588 } 1589 } 1590 mSurfaceHolder.mSurfaceLock.lock(); 1591 try { 1592 mSurfaceHolder.mSurface = new Surface(); 1593 } finally { 1594 mSurfaceHolder.mSurfaceLock.unlock(); 1595 } 1596 } 1597 } 1598 1599 if (mAttachInfo.mHardwareRenderer != null && 1600 mAttachInfo.mHardwareRenderer.isEnabled()) { 1601 if (hwInitialized || windowShouldResize || 1602 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1603 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1604 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1605 if (!hwInitialized) { 1606 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1607 mFullRedrawNeeded = true; 1608 } 1609 } 1610 } 1611 1612 if (!mStopped) { 1613 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1614 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1615 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1616 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1617 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1618 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1619 1620 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1621 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1622 + " mHeight=" + mHeight 1623 + " measuredHeight=" + host.getMeasuredHeight() 1624 + " coveredInsetsChanged=" + contentInsetsChanged); 1625 1626 // Ask host how big it wants to be 1627 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1628 1629 // Implementation of weights from WindowManager.LayoutParams 1630 // We just grow the dimensions as needed and re-measure if 1631 // needs be 1632 int width = host.getMeasuredWidth(); 1633 int height = host.getMeasuredHeight(); 1634 boolean measureAgain = false; 1635 1636 if (lp.horizontalWeight > 0.0f) { 1637 width += (int) ((mWidth - width) * lp.horizontalWeight); 1638 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1639 MeasureSpec.EXACTLY); 1640 measureAgain = true; 1641 } 1642 if (lp.verticalWeight > 0.0f) { 1643 height += (int) ((mHeight - height) * lp.verticalWeight); 1644 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1645 MeasureSpec.EXACTLY); 1646 measureAgain = true; 1647 } 1648 1649 if (measureAgain) { 1650 if (DEBUG_LAYOUT) Log.v(TAG, 1651 "And hey let's measure once more: width=" + width 1652 + " height=" + height); 1653 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1654 } 1655 1656 layoutRequested = true; 1657 } 1658 } 1659 } else { 1660 // Not the first pass and no window/insets/visibility change but the window 1661 // may have moved and we need check that and if so to update the left and right 1662 // in the attach info. We translate only the window frame since on window move 1663 // the window manager tells us only for the new frame but the insets are the 1664 // same and we do not want to translate them more than once. 1665 1666 // TODO: Well, we are checking whether the frame has changed similarly 1667 // to how this is done for the insets. This is however incorrect since 1668 // the insets and the frame are translated. For example, the old frame 1669 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1670 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1671 // true since we are comparing a not translated value to a translated one. 1672 // This scenario is rare but we may want to fix that. 1673 1674 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1675 || attachInfo.mWindowTop != frame.top); 1676 if (windowMoved) { 1677 if (mTranslator != null) { 1678 mTranslator.translateRectInScreenToAppWinFrame(frame); 1679 } 1680 attachInfo.mWindowLeft = frame.left; 1681 attachInfo.mWindowTop = frame.top; 1682 } 1683 } 1684 1685 final boolean didLayout = layoutRequested && !mStopped; 1686 boolean triggerGlobalLayoutListener = didLayout 1687 || attachInfo.mRecomputeGlobalAttributes; 1688 if (didLayout) { 1689 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1690 1691 // By this point all views have been sized and positioned 1692 // We can compute the transparent area 1693 1694 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1695 // start out transparent 1696 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1697 host.getLocationInWindow(mTmpLocation); 1698 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1699 mTmpLocation[0] + host.mRight - host.mLeft, 1700 mTmpLocation[1] + host.mBottom - host.mTop); 1701 1702 host.gatherTransparentRegion(mTransparentRegion); 1703 if (mTranslator != null) { 1704 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1705 } 1706 1707 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1708 mPreviousTransparentRegion.set(mTransparentRegion); 1709 mFullRedrawNeeded = true; 1710 // reconfigure window manager 1711 try { 1712 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1713 } catch (RemoteException e) { 1714 } 1715 } 1716 } 1717 1718 if (DBG) { 1719 System.out.println("======================================"); 1720 System.out.println("performTraversals -- after setFrame"); 1721 host.debug(); 1722 } 1723 } 1724 1725 if (triggerGlobalLayoutListener) { 1726 attachInfo.mRecomputeGlobalAttributes = false; 1727 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1728 1729 if (AccessibilityManager.getInstance(host.mContext).isEnabled()) { 1730 postSendWindowContentChangedCallback(mView); 1731 } 1732 } 1733 1734 if (computesInternalInsets) { 1735 // Clear the original insets. 1736 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1737 insets.reset(); 1738 1739 // Compute new insets in place. 1740 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1741 1742 // Tell the window manager. 1743 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1744 mLastGivenInsets.set(insets); 1745 1746 // Translate insets to screen coordinates if needed. 1747 final Rect contentInsets; 1748 final Rect visibleInsets; 1749 final Region touchableRegion; 1750 if (mTranslator != null) { 1751 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1752 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1753 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1754 } else { 1755 contentInsets = insets.contentInsets; 1756 visibleInsets = insets.visibleInsets; 1757 touchableRegion = insets.touchableRegion; 1758 } 1759 1760 try { 1761 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1762 contentInsets, visibleInsets, touchableRegion); 1763 } catch (RemoteException e) { 1764 } 1765 } 1766 } 1767 1768 boolean skipDraw = false; 1769 1770 if (mFirst) { 1771 // handle first focus request 1772 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1773 + mView.hasFocus()); 1774 if (mView != null) { 1775 if (!mView.hasFocus()) { 1776 mView.requestFocus(View.FOCUS_FORWARD); 1777 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1778 + mView.findFocus()); 1779 } else { 1780 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1781 + mView.findFocus()); 1782 } 1783 } 1784 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1785 // The first time we relayout the window, if the system is 1786 // doing window animations, we want to hold of on any future 1787 // draws until the animation is done. 1788 mWindowsAnimating = true; 1789 } 1790 } else if (mWindowsAnimating) { 1791 skipDraw = true; 1792 } 1793 1794 mFirst = false; 1795 mWillDrawSoon = false; 1796 mNewSurfaceNeeded = false; 1797 mViewVisibility = viewVisibility; 1798 1799 if (mAttachInfo.mHasWindowFocus) { 1800 final boolean imTarget = WindowManager.LayoutParams 1801 .mayUseInputMethod(mWindowAttributes.flags); 1802 if (imTarget != mLastWasImTarget) { 1803 mLastWasImTarget = imTarget; 1804 InputMethodManager imm = InputMethodManager.peekInstance(); 1805 if (imm != null && imTarget) { 1806 imm.startGettingWindowFocus(mView); 1807 imm.onWindowFocus(mView, mView.findFocus(), 1808 mWindowAttributes.softInputMode, 1809 !mHasHadWindowFocus, mWindowAttributes.flags); 1810 } 1811 } 1812 } 1813 1814 // Remember if we must report the next draw. 1815 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1816 mReportNextDraw = true; 1817 } 1818 1819 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1820 viewVisibility != View.VISIBLE; 1821 1822 if (!cancelDraw && !newSurface) { 1823 if (!skipDraw || mReportNextDraw) { 1824 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1825 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1826 mPendingTransitions.get(i).startChangingAnimations(); 1827 } 1828 mPendingTransitions.clear(); 1829 } 1830 1831 performDraw(); 1832 } 1833 } else { 1834 if (viewVisibility == View.VISIBLE) { 1835 // Try again 1836 scheduleTraversals(); 1837 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1838 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1839 mPendingTransitions.get(i).endChangingAnimations(); 1840 } 1841 mPendingTransitions.clear(); 1842 } 1843 } 1844 1845 mIsInTraversal = false; 1846 } 1847 1848 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1849 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1850 try { 1851 if (!mWindowSession.outOfMemory(mWindow) && 1852 Process.myUid() != Process.SYSTEM_UID) { 1853 Slog.w(TAG, "No processes killed for memory; killing self"); 1854 Process.killProcess(Process.myPid()); 1855 } 1856 } catch (RemoteException ex) { 1857 } 1858 mLayoutRequested = true; // ask wm for a new surface next time. 1859 } 1860 1861 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1862 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1863 try { 1864 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1865 } finally { 1866 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1867 } 1868 } 1869 1870 /** 1871 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1872 * is currently undergoing a layout pass. 1873 * 1874 * @return whether the view hierarchy is currently undergoing a layout pass 1875 */ 1876 boolean isInLayout() { 1877 return mInLayout; 1878 } 1879 1880 /** 1881 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1882 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1883 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1884 * all children in that container hierarchy are measured and laid out at the end of the layout 1885 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1886 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1887 * we check all of those views to see if any still have pending layout requests, which 1888 * indicates that they were not correctly handled by their container hierarchy. If that is 1889 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1890 * to blank containers, and force a second request/measure/layout pass in this frame. If 1891 * more requestLayout() calls are received during that second layout pass, we post those 1892 * requests to the next frame to avoid possible infinite loops. 1893 * 1894 * <p>The return value from this method indicates whether the request should proceed 1895 * (if it is a request during the first layout pass) or should be skipped and posted to the 1896 * next frame (if it is a request during the second layout pass).</p> 1897 * 1898 * @param view the view that requested the layout. 1899 * 1900 * @return true if request should proceed, false otherwise. 1901 */ 1902 boolean requestLayoutDuringLayout(final View view) { 1903 if (view.mParent == null || view.mAttachInfo == null) { 1904 // Would not normally trigger another layout, so just let it pass through as usual 1905 return true; 1906 } 1907 if (!mLayoutRequesters.contains(view)) { 1908 mLayoutRequesters.add(view); 1909 } 1910 if (!mHandlingLayoutInLayoutRequest) { 1911 // Let the request proceed normally; it will be processed in a second layout pass 1912 // if necessary 1913 return true; 1914 } else { 1915 // Don't let the request proceed during the second layout pass. 1916 // It will post to the next frame instead. 1917 return false; 1918 } 1919 } 1920 1921 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1922 int desiredWindowHeight) { 1923 mLayoutRequested = false; 1924 mScrollMayChange = true; 1925 mInLayout = true; 1926 1927 final View host = mView; 1928 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1929 Log.v(TAG, "Laying out " + host + " to (" + 1930 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1931 } 1932 1933 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1934 try { 1935 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1936 1937 mInLayout = false; 1938 int numViewsRequestingLayout = mLayoutRequesters.size(); 1939 if (numViewsRequestingLayout > 0) { 1940 // requestLayout() was called during layout. 1941 // If no layout-request flags are set on the requesting views, there is no problem. 1942 // If some requests are still pending, then we need to clear those flags and do 1943 // a full request/measure/layout pass to handle this situation. 1944 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1945 false); 1946 if (validLayoutRequesters != null) { 1947 // Set this flag to indicate that any further requests are happening during 1948 // the second pass, which may result in posting those requests to the next 1949 // frame instead 1950 mHandlingLayoutInLayoutRequest = true; 1951 1952 // Process fresh layout requests, then measure and layout 1953 int numValidRequests = validLayoutRequesters.size(); 1954 for (int i = 0; i < numValidRequests; ++i) { 1955 final View view = validLayoutRequesters.get(i); 1956 Log.w("View", "requestLayout() improperly called by " + view + 1957 " during layout: running second layout pass"); 1958 view.requestLayout(); 1959 } 1960 measureHierarchy(host, lp, mView.getContext().getResources(), 1961 desiredWindowWidth, desiredWindowHeight); 1962 mInLayout = true; 1963 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1964 1965 mHandlingLayoutInLayoutRequest = false; 1966 1967 // Check the valid requests again, this time without checking/clearing the 1968 // layout flags, since requests happening during the second pass get noop'd 1969 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 1970 if (validLayoutRequesters != null) { 1971 final ArrayList<View> finalRequesters = validLayoutRequesters; 1972 // Post second-pass requests to the next frame 1973 getRunQueue().post(new Runnable() { 1974 @Override 1975 public void run() { 1976 int numValidRequests = finalRequesters.size(); 1977 for (int i = 0; i < numValidRequests; ++i) { 1978 final View view = finalRequesters.get(i); 1979 Log.w("View", "requestLayout() improperly called by " + view + 1980 " during second layout pass: posting in next frame"); 1981 view.requestLayout(); 1982 } 1983 } 1984 }); 1985 } 1986 } 1987 1988 } 1989 } finally { 1990 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1991 } 1992 mInLayout = false; 1993 } 1994 1995 /** 1996 * This method is called during layout when there have been calls to requestLayout() during 1997 * layout. It walks through the list of views that requested layout to determine which ones 1998 * still need it, based on visibility in the hierarchy and whether they have already been 1999 * handled (as is usually the case with ListView children). 2000 * 2001 * @param layoutRequesters The list of views that requested layout during layout 2002 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2003 * If so, the FORCE_LAYOUT flag was not set on requesters. 2004 * @return A list of the actual views that still need to be laid out. 2005 */ 2006 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2007 boolean secondLayoutRequests) { 2008 2009 int numViewsRequestingLayout = layoutRequesters.size(); 2010 ArrayList<View> validLayoutRequesters = null; 2011 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2012 View view = layoutRequesters.get(i); 2013 if (view != null && view.mAttachInfo != null && view.mParent != null && 2014 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2015 View.PFLAG_FORCE_LAYOUT)) { 2016 boolean gone = false; 2017 View parent = view; 2018 // Only trigger new requests for views in a non-GONE hierarchy 2019 while (parent != null) { 2020 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2021 gone = true; 2022 break; 2023 } 2024 if (parent.mParent instanceof View) { 2025 parent = (View) parent.mParent; 2026 } else { 2027 parent = null; 2028 } 2029 } 2030 if (!gone) { 2031 if (validLayoutRequesters == null) { 2032 validLayoutRequesters = new ArrayList<View>(); 2033 } 2034 validLayoutRequesters.add(view); 2035 } 2036 } 2037 } 2038 if (!secondLayoutRequests) { 2039 // If we're checking the layout flags, then we need to clean them up also 2040 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2041 View view = layoutRequesters.get(i); 2042 while (view != null && 2043 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2044 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2045 if (view.mParent instanceof View) { 2046 view = (View) view.mParent; 2047 } else { 2048 view = null; 2049 } 2050 } 2051 } 2052 } 2053 layoutRequesters.clear(); 2054 return validLayoutRequesters; 2055 } 2056 2057 public void requestTransparentRegion(View child) { 2058 // the test below should not fail unless someone is messing with us 2059 checkThread(); 2060 if (mView == child) { 2061 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2062 // Need to make sure we re-evaluate the window attributes next 2063 // time around, to ensure the window has the correct format. 2064 mWindowAttributesChanged = true; 2065 mWindowAttributesChangesFlag = 0; 2066 requestLayout(); 2067 } 2068 } 2069 2070 /** 2071 * Figures out the measure spec for the root view in a window based on it's 2072 * layout params. 2073 * 2074 * @param windowSize 2075 * The available width or height of the window 2076 * 2077 * @param rootDimension 2078 * The layout params for one dimension (width or height) of the 2079 * window. 2080 * 2081 * @return The measure spec to use to measure the root view. 2082 */ 2083 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2084 int measureSpec; 2085 switch (rootDimension) { 2086 2087 case ViewGroup.LayoutParams.MATCH_PARENT: 2088 // Window can't resize. Force root view to be windowSize. 2089 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2090 break; 2091 case ViewGroup.LayoutParams.WRAP_CONTENT: 2092 // Window can resize. Set max size for root view. 2093 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2094 break; 2095 default: 2096 // Window wants to be an exact size. Force root view to be that size. 2097 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2098 break; 2099 } 2100 return measureSpec; 2101 } 2102 2103 int mHardwareYOffset; 2104 int mResizeAlpha; 2105 final Paint mResizePaint = new Paint(); 2106 2107 public void onHardwarePreDraw(HardwareCanvas canvas) { 2108 canvas.translate(0, -mHardwareYOffset); 2109 } 2110 2111 public void onHardwarePostDraw(HardwareCanvas canvas) { 2112 if (mResizeBuffer != null) { 2113 mResizePaint.setAlpha(mResizeAlpha); 2114 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2115 } 2116 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2117 } 2118 2119 /** 2120 * @hide 2121 */ 2122 void outputDisplayList(View view) { 2123 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2124 DisplayList displayList = view.getDisplayList(); 2125 if (displayList != null) { 2126 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2127 } 2128 } 2129 } 2130 2131 /** 2132 * @see #PROPERTY_PROFILE_RENDERING 2133 */ 2134 private void profileRendering(boolean enabled) { 2135 if (mProfileRendering) { 2136 mRenderProfilingEnabled = enabled; 2137 2138 if (mRenderProfiler != null) { 2139 mChoreographer.removeFrameCallback(mRenderProfiler); 2140 } 2141 if (mRenderProfilingEnabled) { 2142 if (mRenderProfiler == null) { 2143 mRenderProfiler = new Choreographer.FrameCallback() { 2144 @Override 2145 public void doFrame(long frameTimeNanos) { 2146 mDirty.set(0, 0, mWidth, mHeight); 2147 scheduleTraversals(); 2148 if (mRenderProfilingEnabled) { 2149 mChoreographer.postFrameCallback(mRenderProfiler); 2150 } 2151 } 2152 }; 2153 } 2154 mChoreographer.postFrameCallback(mRenderProfiler); 2155 } else { 2156 mRenderProfiler = null; 2157 } 2158 } 2159 } 2160 2161 /** 2162 * Called from draw() when DEBUG_FPS is enabled 2163 */ 2164 private void trackFPS() { 2165 // Tracks frames per second drawn. First value in a series of draws may be bogus 2166 // because it down not account for the intervening idle time 2167 long nowTime = System.currentTimeMillis(); 2168 if (mFpsStartTime < 0) { 2169 mFpsStartTime = mFpsPrevTime = nowTime; 2170 mFpsNumFrames = 0; 2171 } else { 2172 ++mFpsNumFrames; 2173 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2174 long frameTime = nowTime - mFpsPrevTime; 2175 long totalTime = nowTime - mFpsStartTime; 2176 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2177 mFpsPrevTime = nowTime; 2178 if (totalTime > 1000) { 2179 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2180 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2181 mFpsStartTime = nowTime; 2182 mFpsNumFrames = 0; 2183 } 2184 } 2185 } 2186 2187 private void performDraw() { 2188 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2189 return; 2190 } 2191 2192 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2193 mFullRedrawNeeded = false; 2194 2195 mIsDrawing = true; 2196 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2197 try { 2198 draw(fullRedrawNeeded); 2199 } finally { 2200 mIsDrawing = false; 2201 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2202 } 2203 2204 if (mReportNextDraw) { 2205 mReportNextDraw = false; 2206 2207 if (LOCAL_LOGV) { 2208 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2209 } 2210 if (mSurfaceHolder != null && mSurface.isValid()) { 2211 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2212 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2213 if (callbacks != null) { 2214 for (SurfaceHolder.Callback c : callbacks) { 2215 if (c instanceof SurfaceHolder.Callback2) { 2216 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2217 mSurfaceHolder); 2218 } 2219 } 2220 } 2221 } 2222 try { 2223 mWindowSession.finishDrawing(mWindow); 2224 } catch (RemoteException e) { 2225 } 2226 } 2227 } 2228 2229 private void draw(boolean fullRedrawNeeded) { 2230 Surface surface = mSurface; 2231 if (!surface.isValid()) { 2232 return; 2233 } 2234 2235 if (DEBUG_FPS) { 2236 trackFPS(); 2237 } 2238 2239 if (!sFirstDrawComplete) { 2240 synchronized (sFirstDrawHandlers) { 2241 sFirstDrawComplete = true; 2242 final int count = sFirstDrawHandlers.size(); 2243 for (int i = 0; i< count; i++) { 2244 mHandler.post(sFirstDrawHandlers.get(i)); 2245 } 2246 } 2247 } 2248 2249 scrollToRectOrFocus(null, false); 2250 2251 final AttachInfo attachInfo = mAttachInfo; 2252 if (attachInfo.mViewScrollChanged) { 2253 attachInfo.mViewScrollChanged = false; 2254 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2255 } 2256 2257 int yoff; 2258 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2259 if (animating) { 2260 yoff = mScroller.getCurrY(); 2261 } else { 2262 yoff = mScrollY; 2263 } 2264 if (mCurScrollY != yoff) { 2265 mCurScrollY = yoff; 2266 fullRedrawNeeded = true; 2267 } 2268 2269 final float appScale = attachInfo.mApplicationScale; 2270 final boolean scalingRequired = attachInfo.mScalingRequired; 2271 2272 int resizeAlpha = 0; 2273 if (mResizeBuffer != null) { 2274 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2275 if (deltaTime < mResizeBufferDuration) { 2276 float amt = deltaTime/(float) mResizeBufferDuration; 2277 amt = mResizeInterpolator.getInterpolation(amt); 2278 animating = true; 2279 resizeAlpha = 255 - (int)(amt*255); 2280 } else { 2281 disposeResizeBuffer(); 2282 } 2283 } 2284 2285 final Rect dirty = mDirty; 2286 if (mSurfaceHolder != null) { 2287 // The app owns the surface, we won't draw. 2288 dirty.setEmpty(); 2289 if (animating) { 2290 if (mScroller != null) { 2291 mScroller.abortAnimation(); 2292 } 2293 disposeResizeBuffer(); 2294 } 2295 return; 2296 } 2297 2298 if (fullRedrawNeeded) { 2299 attachInfo.mIgnoreDirtyState = true; 2300 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2301 } 2302 2303 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2304 Log.v(TAG, "Draw " + mView + "/" 2305 + mWindowAttributes.getTitle() 2306 + ": dirty={" + dirty.left + "," + dirty.top 2307 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2308 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2309 appScale + ", width=" + mWidth + ", height=" + mHeight); 2310 } 2311 2312 invalidateDisplayLists(); 2313 2314 attachInfo.mTreeObserver.dispatchOnDraw(); 2315 2316 if (!dirty.isEmpty() || mIsAnimating) { 2317 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2318 // Draw with hardware renderer. 2319 mIsAnimating = false; 2320 mHardwareYOffset = yoff; 2321 mResizeAlpha = resizeAlpha; 2322 2323 mCurrentDirty.set(dirty); 2324 dirty.setEmpty(); 2325 2326 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2327 animating ? null : mCurrentDirty); 2328 } else { 2329 // If we get here with a disabled & requested hardware renderer, something went 2330 // wrong (an invalidate posted right before we destroyed the hardware surface 2331 // for instance) so we should just bail out. Locking the surface with software 2332 // rendering at this point would lock it forever and prevent hardware renderer 2333 // from doing its job when it comes back. 2334 // Before we request a new frame we must however attempt to reinitiliaze the 2335 // hardware renderer if it's in requested state. This would happen after an 2336 // eglTerminate() for instance. 2337 if (attachInfo.mHardwareRenderer != null && 2338 !attachInfo.mHardwareRenderer.isEnabled() && 2339 attachInfo.mHardwareRenderer.isRequested()) { 2340 2341 try { 2342 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2343 mHolder.getSurface()); 2344 } catch (Surface.OutOfResourcesException e) { 2345 handleOutOfResourcesException(e); 2346 return; 2347 } 2348 2349 mFullRedrawNeeded = true; 2350 scheduleTraversals(); 2351 return; 2352 } 2353 2354 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2355 return; 2356 } 2357 } 2358 } 2359 2360 if (animating) { 2361 mFullRedrawNeeded = true; 2362 scheduleTraversals(); 2363 } 2364 } 2365 2366 /** 2367 * @return true if drawing was succesfull, false if an error occurred 2368 */ 2369 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2370 boolean scalingRequired, Rect dirty) { 2371 2372 // Draw with software renderer. 2373 Canvas canvas; 2374 try { 2375 int left = dirty.left; 2376 int top = dirty.top; 2377 int right = dirty.right; 2378 int bottom = dirty.bottom; 2379 2380 canvas = mSurface.lockCanvas(dirty); 2381 2382 // The dirty rectangle can be modified by Surface.lockCanvas() 2383 //noinspection ConstantConditions 2384 if (left != dirty.left || top != dirty.top || right != dirty.right || 2385 bottom != dirty.bottom) { 2386 attachInfo.mIgnoreDirtyState = true; 2387 } 2388 2389 // TODO: Do this in native 2390 canvas.setDensity(mDensity); 2391 } catch (Surface.OutOfResourcesException e) { 2392 handleOutOfResourcesException(e); 2393 return false; 2394 } catch (IllegalArgumentException e) { 2395 Log.e(TAG, "Could not lock surface", e); 2396 // Don't assume this is due to out of memory, it could be 2397 // something else, and if it is something else then we could 2398 // kill stuff (or ourself) for no reason. 2399 mLayoutRequested = true; // ask wm for a new surface next time. 2400 return false; 2401 } 2402 2403 try { 2404 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2405 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2406 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2407 //canvas.drawARGB(255, 255, 0, 0); 2408 } 2409 2410 // If this bitmap's format includes an alpha channel, we 2411 // need to clear it before drawing so that the child will 2412 // properly re-composite its drawing on a transparent 2413 // background. This automatically respects the clip/dirty region 2414 // or 2415 // If we are applying an offset, we need to clear the area 2416 // where the offset doesn't appear to avoid having garbage 2417 // left in the blank areas. 2418 if (!canvas.isOpaque() || yoff != 0) { 2419 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2420 } 2421 2422 dirty.setEmpty(); 2423 mIsAnimating = false; 2424 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2425 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2426 2427 if (DEBUG_DRAW) { 2428 Context cxt = mView.getContext(); 2429 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2430 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2431 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2432 } 2433 try { 2434 canvas.translate(0, -yoff); 2435 if (mTranslator != null) { 2436 mTranslator.translateCanvas(canvas); 2437 } 2438 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2439 attachInfo.mSetIgnoreDirtyState = false; 2440 2441 mView.draw(canvas); 2442 2443 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2444 } finally { 2445 if (!attachInfo.mSetIgnoreDirtyState) { 2446 // Only clear the flag if it was not set during the mView.draw() call 2447 attachInfo.mIgnoreDirtyState = false; 2448 } 2449 } 2450 } finally { 2451 try { 2452 surface.unlockCanvasAndPost(canvas); 2453 } catch (IllegalArgumentException e) { 2454 Log.e(TAG, "Could not unlock surface", e); 2455 mLayoutRequested = true; // ask wm for a new surface next time. 2456 //noinspection ReturnInsideFinallyBlock 2457 return false; 2458 } 2459 2460 if (LOCAL_LOGV) { 2461 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2462 } 2463 } 2464 return true; 2465 } 2466 2467 /** 2468 * We want to draw a highlight around the current accessibility focused. 2469 * Since adding a style for all possible view is not a viable option we 2470 * have this specialized drawing method. 2471 * 2472 * Note: We are doing this here to be able to draw the highlight for 2473 * virtual views in addition to real ones. 2474 * 2475 * @param canvas The canvas on which to draw. 2476 */ 2477 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2478 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2479 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2480 return; 2481 } 2482 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2483 return; 2484 } 2485 Drawable drawable = getAccessibilityFocusedDrawable(); 2486 if (drawable == null) { 2487 return; 2488 } 2489 AccessibilityNodeProvider provider = 2490 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2491 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2492 if (provider == null) { 2493 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2494 } else { 2495 if (mAccessibilityFocusedVirtualView == null) { 2496 return; 2497 } 2498 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2499 } 2500 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2501 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2502 drawable.setBounds(bounds); 2503 drawable.draw(canvas); 2504 } 2505 2506 private Drawable getAccessibilityFocusedDrawable() { 2507 if (mAttachInfo != null) { 2508 // Lazily load the accessibility focus drawable. 2509 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2510 TypedValue value = new TypedValue(); 2511 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2512 R.attr.accessibilityFocusedDrawable, value, true); 2513 if (resolved) { 2514 mAttachInfo.mAccessibilityFocusDrawable = 2515 mView.mContext.getResources().getDrawable(value.resourceId); 2516 } 2517 } 2518 return mAttachInfo.mAccessibilityFocusDrawable; 2519 } 2520 return null; 2521 } 2522 2523 void invalidateDisplayLists() { 2524 final ArrayList<DisplayList> displayLists = mDisplayLists; 2525 final int count = displayLists.size(); 2526 2527 for (int i = 0; i < count; i++) { 2528 final DisplayList displayList = displayLists.get(i); 2529 if (displayList.isDirty()) { 2530 displayList.clear(); 2531 } 2532 } 2533 2534 displayLists.clear(); 2535 } 2536 2537 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2538 final View.AttachInfo attachInfo = mAttachInfo; 2539 final Rect ci = attachInfo.mContentInsets; 2540 final Rect vi = attachInfo.mVisibleInsets; 2541 int scrollY = 0; 2542 boolean handled = false; 2543 2544 if (vi.left > ci.left || vi.top > ci.top 2545 || vi.right > ci.right || vi.bottom > ci.bottom) { 2546 // We'll assume that we aren't going to change the scroll 2547 // offset, since we want to avoid that unless it is actually 2548 // going to make the focus visible... otherwise we scroll 2549 // all over the place. 2550 scrollY = mScrollY; 2551 // We can be called for two different situations: during a draw, 2552 // to update the scroll position if the focus has changed (in which 2553 // case 'rectangle' is null), or in response to a 2554 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2555 // is non-null and we just want to scroll to whatever that 2556 // rectangle is). 2557 final View focus = mView.findFocus(); 2558 if (focus == null) { 2559 return false; 2560 } 2561 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2562 if (focus != lastScrolledFocus) { 2563 // If the focus has changed, then ignore any requests to scroll 2564 // to a rectangle; first we want to make sure the entire focus 2565 // view is visible. 2566 rectangle = null; 2567 } 2568 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2569 + " rectangle=" + rectangle + " ci=" + ci 2570 + " vi=" + vi); 2571 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2572 // Optimization: if the focus hasn't changed since last 2573 // time, and no layout has happened, then just leave things 2574 // as they are. 2575 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2576 + mScrollY + " vi=" + vi.toShortString()); 2577 } else { 2578 // We need to determine if the currently focused view is 2579 // within the visible part of the window and, if not, apply 2580 // a pan so it can be seen. 2581 mLastScrolledFocus = new WeakReference<View>(focus); 2582 mScrollMayChange = false; 2583 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2584 // Try to find the rectangle from the focus view. 2585 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2586 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2587 + mView.getWidth() + " h=" + mView.getHeight() 2588 + " ci=" + ci.toShortString() 2589 + " vi=" + vi.toShortString()); 2590 if (rectangle == null) { 2591 focus.getFocusedRect(mTempRect); 2592 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2593 + ": focusRect=" + mTempRect.toShortString()); 2594 if (mView instanceof ViewGroup) { 2595 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2596 focus, mTempRect); 2597 } 2598 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2599 "Focus in window: focusRect=" 2600 + mTempRect.toShortString() 2601 + " visRect=" + mVisRect.toShortString()); 2602 } else { 2603 mTempRect.set(rectangle); 2604 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2605 "Request scroll to rect: " 2606 + mTempRect.toShortString() 2607 + " visRect=" + mVisRect.toShortString()); 2608 } 2609 if (mTempRect.intersect(mVisRect)) { 2610 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2611 "Focus window visible rect: " 2612 + mTempRect.toShortString()); 2613 if (mTempRect.height() > 2614 (mView.getHeight()-vi.top-vi.bottom)) { 2615 // If the focus simply is not going to fit, then 2616 // best is probably just to leave things as-is. 2617 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2618 "Too tall; leaving scrollY=" + scrollY); 2619 } else if ((mTempRect.top-scrollY) < vi.top) { 2620 scrollY -= vi.top - (mTempRect.top-scrollY); 2621 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2622 "Top covered; scrollY=" + scrollY); 2623 } else if ((mTempRect.bottom-scrollY) 2624 > (mView.getHeight()-vi.bottom)) { 2625 scrollY += (mTempRect.bottom-scrollY) 2626 - (mView.getHeight()-vi.bottom); 2627 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2628 "Bottom covered; scrollY=" + scrollY); 2629 } 2630 handled = true; 2631 } 2632 } 2633 } 2634 } 2635 2636 if (scrollY != mScrollY) { 2637 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2638 + mScrollY + " , new=" + scrollY); 2639 if (!immediate && mResizeBuffer == null) { 2640 if (mScroller == null) { 2641 mScroller = new Scroller(mView.getContext()); 2642 } 2643 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2644 } else if (mScroller != null) { 2645 mScroller.abortAnimation(); 2646 } 2647 mScrollY = scrollY; 2648 } 2649 2650 return handled; 2651 } 2652 2653 /** 2654 * @hide 2655 */ 2656 public View getAccessibilityFocusedHost() { 2657 return mAccessibilityFocusedHost; 2658 } 2659 2660 /** 2661 * @hide 2662 */ 2663 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2664 return mAccessibilityFocusedVirtualView; 2665 } 2666 2667 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2668 // If we have a virtual view with accessibility focus we need 2669 // to clear the focus and invalidate the virtual view bounds. 2670 if (mAccessibilityFocusedVirtualView != null) { 2671 2672 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2673 View focusHost = mAccessibilityFocusedHost; 2674 focusHost.clearAccessibilityFocusNoCallbacks(); 2675 2676 // Wipe the state of the current accessibility focus since 2677 // the call into the provider to clear accessibility focus 2678 // will fire an accessibility event which will end up calling 2679 // this method and we want to have clean state when this 2680 // invocation happens. 2681 mAccessibilityFocusedHost = null; 2682 mAccessibilityFocusedVirtualView = null; 2683 2684 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2685 if (provider != null) { 2686 // Invalidate the area of the cleared accessibility focus. 2687 focusNode.getBoundsInParent(mTempRect); 2688 focusHost.invalidate(mTempRect); 2689 // Clear accessibility focus in the virtual node. 2690 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2691 focusNode.getSourceNodeId()); 2692 provider.performAction(virtualNodeId, 2693 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2694 } 2695 focusNode.recycle(); 2696 } 2697 if (mAccessibilityFocusedHost != null) { 2698 // Clear accessibility focus in the view. 2699 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2700 } 2701 2702 // Set the new focus host and node. 2703 mAccessibilityFocusedHost = view; 2704 mAccessibilityFocusedVirtualView = node; 2705 } 2706 2707 public void requestChildFocus(View child, View focused) { 2708 if (DEBUG_INPUT_RESIZE) { 2709 Log.v(TAG, "Request child focus: focus now " + focused); 2710 } 2711 checkThread(); 2712 scheduleTraversals(); 2713 } 2714 2715 public void clearChildFocus(View child) { 2716 if (DEBUG_INPUT_RESIZE) { 2717 Log.v(TAG, "Clearing child focus"); 2718 } 2719 checkThread(); 2720 scheduleTraversals(); 2721 } 2722 2723 @Override 2724 public ViewParent getParentForAccessibility() { 2725 return null; 2726 } 2727 2728 public void focusableViewAvailable(View v) { 2729 checkThread(); 2730 if (mView != null) { 2731 if (!mView.hasFocus()) { 2732 v.requestFocus(); 2733 } else { 2734 // the one case where will transfer focus away from the current one 2735 // is if the current view is a view group that prefers to give focus 2736 // to its children first AND the view is a descendant of it. 2737 View focused = mView.findFocus(); 2738 if (focused instanceof ViewGroup) { 2739 ViewGroup group = (ViewGroup) focused; 2740 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2741 && isViewDescendantOf(v, focused)) { 2742 v.requestFocus(); 2743 } 2744 } 2745 } 2746 } 2747 } 2748 2749 public void recomputeViewAttributes(View child) { 2750 checkThread(); 2751 if (mView == child) { 2752 mAttachInfo.mRecomputeGlobalAttributes = true; 2753 if (!mWillDrawSoon) { 2754 scheduleTraversals(); 2755 } 2756 } 2757 } 2758 2759 void dispatchDetachedFromWindow() { 2760 if (mView != null && mView.mAttachInfo != null) { 2761 if (mAttachInfo.mHardwareRenderer != null && 2762 mAttachInfo.mHardwareRenderer.isEnabled()) { 2763 mAttachInfo.mHardwareRenderer.validate(); 2764 } 2765 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2766 mView.dispatchDetachedFromWindow(); 2767 } 2768 2769 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2770 mAccessibilityManager.removeAccessibilityStateChangeListener( 2771 mAccessibilityInteractionConnectionManager); 2772 removeSendWindowContentChangedCallback(); 2773 2774 destroyHardwareRenderer(); 2775 2776 setAccessibilityFocus(null, null); 2777 2778 mView = null; 2779 mAttachInfo.mRootView = null; 2780 mAttachInfo.mSurface = null; 2781 2782 mSurface.release(); 2783 2784 if (mInputQueueCallback != null && mInputQueue != null) { 2785 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2786 mInputQueue.dispose(); 2787 mInputQueueCallback = null; 2788 mInputQueue = null; 2789 } 2790 if (mInputEventReceiver != null) { 2791 mInputEventReceiver.dispose(); 2792 mInputEventReceiver = null; 2793 } 2794 try { 2795 mWindowSession.remove(mWindow); 2796 } catch (RemoteException e) { 2797 } 2798 2799 // Dispose the input channel after removing the window so the Window Manager 2800 // doesn't interpret the input channel being closed as an abnormal termination. 2801 if (mInputChannel != null) { 2802 mInputChannel.dispose(); 2803 mInputChannel = null; 2804 } 2805 2806 unscheduleTraversals(); 2807 } 2808 2809 void updateConfiguration(Configuration config, boolean force) { 2810 if (DEBUG_CONFIGURATION) Log.v(TAG, 2811 "Applying new config to window " 2812 + mWindowAttributes.getTitle() 2813 + ": " + config); 2814 2815 CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded(); 2816 if (ci != null) { 2817 config = new Configuration(config); 2818 ci.applyToConfiguration(mNoncompatDensity, config); 2819 } 2820 2821 synchronized (sConfigCallbacks) { 2822 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2823 sConfigCallbacks.get(i).onConfigurationChanged(config); 2824 } 2825 } 2826 if (mView != null) { 2827 // At this point the resources have been updated to 2828 // have the most recent config, whatever that is. Use 2829 // the one in them which may be newer. 2830 config = mView.getResources().getConfiguration(); 2831 if (force || mLastConfiguration.diff(config) != 0) { 2832 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2833 final int currentLayoutDirection = config.getLayoutDirection(); 2834 mLastConfiguration.setTo(config); 2835 if (lastLayoutDirection != currentLayoutDirection && 2836 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2837 mView.setLayoutDirection(currentLayoutDirection); 2838 } 2839 mView.dispatchConfigurationChanged(config); 2840 } 2841 } 2842 } 2843 2844 /** 2845 * Return true if child is an ancestor of parent, (or equal to the parent). 2846 */ 2847 public static boolean isViewDescendantOf(View child, View parent) { 2848 if (child == parent) { 2849 return true; 2850 } 2851 2852 final ViewParent theParent = child.getParent(); 2853 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2854 } 2855 2856 private static void forceLayout(View view) { 2857 view.forceLayout(); 2858 if (view instanceof ViewGroup) { 2859 ViewGroup group = (ViewGroup) view; 2860 final int count = group.getChildCount(); 2861 for (int i = 0; i < count; i++) { 2862 forceLayout(group.getChildAt(i)); 2863 } 2864 } 2865 } 2866 2867 private final static int MSG_INVALIDATE = 1; 2868 private final static int MSG_INVALIDATE_RECT = 2; 2869 private final static int MSG_DIE = 3; 2870 private final static int MSG_RESIZED = 4; 2871 private final static int MSG_RESIZED_REPORT = 5; 2872 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2873 private final static int MSG_DISPATCH_KEY = 7; 2874 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2875 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2876 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2877 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2878 private final static int MSG_CHECK_FOCUS = 13; 2879 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2880 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2881 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2882 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2883 private final static int MSG_UPDATE_CONFIGURATION = 18; 2884 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2885 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2886 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2887 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2888 private final static int MSG_INVALIDATE_WORLD = 23; 2889 private final static int MSG_WINDOW_MOVED = 24; 2890 2891 final class ViewRootHandler extends Handler { 2892 @Override 2893 public String getMessageName(Message message) { 2894 switch (message.what) { 2895 case MSG_INVALIDATE: 2896 return "MSG_INVALIDATE"; 2897 case MSG_INVALIDATE_RECT: 2898 return "MSG_INVALIDATE_RECT"; 2899 case MSG_DIE: 2900 return "MSG_DIE"; 2901 case MSG_RESIZED: 2902 return "MSG_RESIZED"; 2903 case MSG_RESIZED_REPORT: 2904 return "MSG_RESIZED_REPORT"; 2905 case MSG_WINDOW_FOCUS_CHANGED: 2906 return "MSG_WINDOW_FOCUS_CHANGED"; 2907 case MSG_DISPATCH_KEY: 2908 return "MSG_DISPATCH_KEY"; 2909 case MSG_DISPATCH_APP_VISIBILITY: 2910 return "MSG_DISPATCH_APP_VISIBILITY"; 2911 case MSG_DISPATCH_GET_NEW_SURFACE: 2912 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2913 case MSG_DISPATCH_KEY_FROM_IME: 2914 return "MSG_DISPATCH_KEY_FROM_IME"; 2915 case MSG_FINISH_INPUT_CONNECTION: 2916 return "MSG_FINISH_INPUT_CONNECTION"; 2917 case MSG_CHECK_FOCUS: 2918 return "MSG_CHECK_FOCUS"; 2919 case MSG_CLOSE_SYSTEM_DIALOGS: 2920 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2921 case MSG_DISPATCH_DRAG_EVENT: 2922 return "MSG_DISPATCH_DRAG_EVENT"; 2923 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2924 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2925 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2926 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2927 case MSG_UPDATE_CONFIGURATION: 2928 return "MSG_UPDATE_CONFIGURATION"; 2929 case MSG_PROCESS_INPUT_EVENTS: 2930 return "MSG_PROCESS_INPUT_EVENTS"; 2931 case MSG_DISPATCH_SCREEN_STATE: 2932 return "MSG_DISPATCH_SCREEN_STATE"; 2933 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2934 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2935 case MSG_DISPATCH_DONE_ANIMATING: 2936 return "MSG_DISPATCH_DONE_ANIMATING"; 2937 case MSG_WINDOW_MOVED: 2938 return "MSG_WINDOW_MOVED"; 2939 } 2940 return super.getMessageName(message); 2941 } 2942 2943 @Override 2944 public void handleMessage(Message msg) { 2945 switch (msg.what) { 2946 case MSG_INVALIDATE: 2947 ((View) msg.obj).invalidate(); 2948 break; 2949 case MSG_INVALIDATE_RECT: 2950 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2951 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2952 info.recycle(); 2953 break; 2954 case MSG_PROCESS_INPUT_EVENTS: 2955 mProcessInputEventsScheduled = false; 2956 doProcessInputEvents(); 2957 break; 2958 case MSG_DISPATCH_APP_VISIBILITY: 2959 handleAppVisibility(msg.arg1 != 0); 2960 break; 2961 case MSG_DISPATCH_GET_NEW_SURFACE: 2962 handleGetNewSurface(); 2963 break; 2964 case MSG_RESIZED: { 2965 // Recycled in the fall through... 2966 SomeArgs args = (SomeArgs) msg.obj; 2967 if (mWinFrame.equals(args.arg1) 2968 && mPendingOverscanInsets.equals(args.arg5) 2969 && mPendingContentInsets.equals(args.arg2) 2970 && mPendingVisibleInsets.equals(args.arg3) 2971 && args.arg4 == null) { 2972 break; 2973 } 2974 } // fall through... 2975 case MSG_RESIZED_REPORT: 2976 if (mAdded) { 2977 SomeArgs args = (SomeArgs) msg.obj; 2978 2979 Configuration config = (Configuration) args.arg4; 2980 if (config != null) { 2981 updateConfiguration(config, false); 2982 } 2983 2984 mWinFrame.set((Rect) args.arg1); 2985 mPendingOverscanInsets.set((Rect) args.arg5); 2986 mPendingContentInsets.set((Rect) args.arg2); 2987 mPendingVisibleInsets.set((Rect) args.arg3); 2988 2989 args.recycle(); 2990 2991 if (msg.what == MSG_RESIZED_REPORT) { 2992 mReportNextDraw = true; 2993 } 2994 2995 if (mView != null) { 2996 forceLayout(mView); 2997 } 2998 2999 requestLayout(); 3000 } 3001 break; 3002 case MSG_WINDOW_MOVED: 3003 if (mAdded) { 3004 final int w = mWinFrame.width(); 3005 final int h = mWinFrame.height(); 3006 final int l = msg.arg1; 3007 final int t = msg.arg2; 3008 mWinFrame.left = l; 3009 mWinFrame.right = l + w; 3010 mWinFrame.top = t; 3011 mWinFrame.bottom = t + h; 3012 3013 if (mView != null) { 3014 forceLayout(mView); 3015 } 3016 requestLayout(); 3017 } 3018 break; 3019 case MSG_WINDOW_FOCUS_CHANGED: { 3020 if (mAdded) { 3021 boolean hasWindowFocus = msg.arg1 != 0; 3022 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3023 3024 profileRendering(hasWindowFocus); 3025 3026 if (hasWindowFocus) { 3027 boolean inTouchMode = msg.arg2 != 0; 3028 ensureTouchModeLocally(inTouchMode); 3029 3030 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3031 mFullRedrawNeeded = true; 3032 try { 3033 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3034 mWidth, mHeight, mHolder.getSurface()); 3035 } catch (Surface.OutOfResourcesException e) { 3036 Log.e(TAG, "OutOfResourcesException locking surface", e); 3037 try { 3038 if (!mWindowSession.outOfMemory(mWindow)) { 3039 Slog.w(TAG, "No processes killed for memory; killing self"); 3040 Process.killProcess(Process.myPid()); 3041 } 3042 } catch (RemoteException ex) { 3043 } 3044 // Retry in a bit. 3045 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3046 return; 3047 } 3048 } 3049 } 3050 3051 mLastWasImTarget = WindowManager.LayoutParams 3052 .mayUseInputMethod(mWindowAttributes.flags); 3053 3054 InputMethodManager imm = InputMethodManager.peekInstance(); 3055 if (mView != null) { 3056 if (hasWindowFocus && imm != null && mLastWasImTarget) { 3057 imm.startGettingWindowFocus(mView); 3058 } 3059 mAttachInfo.mKeyDispatchState.reset(); 3060 mView.dispatchWindowFocusChanged(hasWindowFocus); 3061 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3062 } 3063 3064 // Note: must be done after the focus change callbacks, 3065 // so all of the view state is set up correctly. 3066 if (hasWindowFocus) { 3067 if (imm != null && mLastWasImTarget) { 3068 imm.onWindowFocus(mView, mView.findFocus(), 3069 mWindowAttributes.softInputMode, 3070 !mHasHadWindowFocus, mWindowAttributes.flags); 3071 } 3072 // Clear the forward bit. We can just do this directly, since 3073 // the window manager doesn't care about it. 3074 mWindowAttributes.softInputMode &= 3075 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3076 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3077 .softInputMode &= 3078 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3079 mHasHadWindowFocus = true; 3080 } 3081 3082 setAccessibilityFocus(null, null); 3083 3084 if (mView != null && mAccessibilityManager.isEnabled()) { 3085 if (hasWindowFocus) { 3086 mView.sendAccessibilityEvent( 3087 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3088 } 3089 } 3090 } 3091 } break; 3092 case MSG_DIE: 3093 doDie(); 3094 break; 3095 case MSG_DISPATCH_KEY: { 3096 KeyEvent event = (KeyEvent)msg.obj; 3097 enqueueInputEvent(event, null, 0, true); 3098 } break; 3099 case MSG_DISPATCH_KEY_FROM_IME: { 3100 if (LOCAL_LOGV) Log.v( 3101 TAG, "Dispatching key " 3102 + msg.obj + " from IME to " + mView); 3103 KeyEvent event = (KeyEvent)msg.obj; 3104 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3105 // The IME is trying to say this event is from the 3106 // system! Bad bad bad! 3107 //noinspection UnusedAssignment 3108 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3109 } 3110 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3111 } break; 3112 case MSG_FINISH_INPUT_CONNECTION: { 3113 InputMethodManager imm = InputMethodManager.peekInstance(); 3114 if (imm != null) { 3115 imm.reportFinishInputConnection((InputConnection)msg.obj); 3116 } 3117 } break; 3118 case MSG_CHECK_FOCUS: { 3119 InputMethodManager imm = InputMethodManager.peekInstance(); 3120 if (imm != null) { 3121 imm.checkFocus(); 3122 } 3123 } break; 3124 case MSG_CLOSE_SYSTEM_DIALOGS: { 3125 if (mView != null) { 3126 mView.onCloseSystemDialogs((String)msg.obj); 3127 } 3128 } break; 3129 case MSG_DISPATCH_DRAG_EVENT: 3130 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3131 DragEvent event = (DragEvent)msg.obj; 3132 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3133 handleDragEvent(event); 3134 } break; 3135 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3136 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3137 } break; 3138 case MSG_UPDATE_CONFIGURATION: { 3139 Configuration config = (Configuration)msg.obj; 3140 if (config.isOtherSeqNewer(mLastConfiguration)) { 3141 config = mLastConfiguration; 3142 } 3143 updateConfiguration(config, false); 3144 } break; 3145 case MSG_DISPATCH_SCREEN_STATE: { 3146 if (mView != null) { 3147 handleScreenStateChange(msg.arg1 == 1); 3148 } 3149 } break; 3150 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3151 setAccessibilityFocus(null, null); 3152 } break; 3153 case MSG_DISPATCH_DONE_ANIMATING: { 3154 handleDispatchDoneAnimating(); 3155 } break; 3156 case MSG_INVALIDATE_WORLD: { 3157 if (mView != null) { 3158 invalidateWorld(mView); 3159 } 3160 } break; 3161 } 3162 } 3163 } 3164 3165 final ViewRootHandler mHandler = new ViewRootHandler(); 3166 3167 /** 3168 * Something in the current window tells us we need to change the touch mode. For 3169 * example, we are not in touch mode, and the user touches the screen. 3170 * 3171 * If the touch mode has changed, tell the window manager, and handle it locally. 3172 * 3173 * @param inTouchMode Whether we want to be in touch mode. 3174 * @return True if the touch mode changed and focus changed was changed as a result 3175 */ 3176 boolean ensureTouchMode(boolean inTouchMode) { 3177 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3178 + "touch mode is " + mAttachInfo.mInTouchMode); 3179 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3180 3181 // tell the window manager 3182 try { 3183 mWindowSession.setInTouchMode(inTouchMode); 3184 } catch (RemoteException e) { 3185 throw new RuntimeException(e); 3186 } 3187 3188 // handle the change 3189 return ensureTouchModeLocally(inTouchMode); 3190 } 3191 3192 /** 3193 * Ensure that the touch mode for this window is set, and if it is changing, 3194 * take the appropriate action. 3195 * @param inTouchMode Whether we want to be in touch mode. 3196 * @return True if the touch mode changed and focus changed was changed as a result 3197 */ 3198 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3199 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3200 + "touch mode is " + mAttachInfo.mInTouchMode); 3201 3202 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3203 3204 mAttachInfo.mInTouchMode = inTouchMode; 3205 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3206 3207 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3208 } 3209 3210 private boolean enterTouchMode() { 3211 if (mView != null) { 3212 if (mView.hasFocus()) { 3213 // note: not relying on mFocusedView here because this could 3214 // be when the window is first being added, and mFocused isn't 3215 // set yet. 3216 final View focused = mView.findFocus(); 3217 if (focused != null && !focused.isFocusableInTouchMode()) { 3218 final ViewGroup ancestorToTakeFocus = 3219 findAncestorToTakeFocusInTouchMode(focused); 3220 if (ancestorToTakeFocus != null) { 3221 // there is an ancestor that wants focus after its descendants that 3222 // is focusable in touch mode.. give it focus 3223 return ancestorToTakeFocus.requestFocus(); 3224 } else { 3225 // nothing appropriate to have focus in touch mode, clear it out 3226 focused.unFocus(); 3227 return true; 3228 } 3229 } 3230 } 3231 } 3232 return false; 3233 } 3234 3235 /** 3236 * Find an ancestor of focused that wants focus after its descendants and is 3237 * focusable in touch mode. 3238 * @param focused The currently focused view. 3239 * @return An appropriate view, or null if no such view exists. 3240 */ 3241 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3242 ViewParent parent = focused.getParent(); 3243 while (parent instanceof ViewGroup) { 3244 final ViewGroup vgParent = (ViewGroup) parent; 3245 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3246 && vgParent.isFocusableInTouchMode()) { 3247 return vgParent; 3248 } 3249 if (vgParent.isRootNamespace()) { 3250 return null; 3251 } else { 3252 parent = vgParent.getParent(); 3253 } 3254 } 3255 return null; 3256 } 3257 3258 private boolean leaveTouchMode() { 3259 if (mView != null) { 3260 if (mView.hasFocus()) { 3261 View focusedView = mView.findFocus(); 3262 if (!(focusedView instanceof ViewGroup)) { 3263 // some view has focus, let it keep it 3264 return false; 3265 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3266 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3267 // some view group has focus, and doesn't prefer its children 3268 // over itself for focus, so let them keep it. 3269 return false; 3270 } 3271 } 3272 3273 // find the best view to give focus to in this brave new non-touch-mode 3274 // world 3275 final View focused = focusSearch(null, View.FOCUS_DOWN); 3276 if (focused != null) { 3277 return focused.requestFocus(View.FOCUS_DOWN); 3278 } 3279 } 3280 return false; 3281 } 3282 3283 /** 3284 * Base class for implementing a stage in the chain of responsibility 3285 * for processing input events. 3286 * <p> 3287 * Events are delivered to the stage by the {@link #deliver} method. The stage 3288 * then has the choice of finishing the event or forwarding it to the next stage. 3289 * </p> 3290 */ 3291 abstract class InputStage { 3292 private final InputStage mNext; 3293 3294 protected static final int FORWARD = 0; 3295 protected static final int FINISH_HANDLED = 1; 3296 protected static final int FINISH_NOT_HANDLED = 2; 3297 3298 /** 3299 * Creates an input stage. 3300 * @param next The next stage to which events should be forwarded. 3301 */ 3302 public InputStage(InputStage next) { 3303 mNext = next; 3304 } 3305 3306 /** 3307 * Delivers an event to be processed. 3308 */ 3309 public final void deliver(QueuedInputEvent q) { 3310 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3311 forward(q); 3312 } else if (mView == null || !mAdded) { 3313 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3314 finish(q, false); 3315 } else if (!mAttachInfo.mHasWindowFocus && 3316 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3317 !isTerminalInputEvent(q.mEvent)) { 3318 // If this is a focused event and the window doesn't currently have input focus, 3319 // then drop this event. This could be an event that came back from the previous 3320 // stage but the window has lost focus in the meantime. 3321 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3322 finish(q, false); 3323 } else { 3324 apply(q, onProcess(q)); 3325 } 3326 } 3327 3328 /** 3329 * Marks the the input event as finished then forwards it to the next stage. 3330 */ 3331 protected void finish(QueuedInputEvent q, boolean handled) { 3332 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3333 if (handled) { 3334 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3335 } 3336 forward(q); 3337 } 3338 3339 /** 3340 * Forwards the event to the next stage. 3341 */ 3342 protected void forward(QueuedInputEvent q) { 3343 onDeliverToNext(q); 3344 } 3345 3346 /** 3347 * Applies a result code from {@link #onProcess} to the specified event. 3348 */ 3349 protected void apply(QueuedInputEvent q, int result) { 3350 if (result == FORWARD) { 3351 forward(q); 3352 } else if (result == FINISH_HANDLED) { 3353 finish(q, true); 3354 } else if (result == FINISH_NOT_HANDLED) { 3355 finish(q, false); 3356 } else { 3357 throw new IllegalArgumentException("Invalid result: " + result); 3358 } 3359 } 3360 3361 /** 3362 * Called when an event is ready to be processed. 3363 * @return A result code indicating how the event was handled. 3364 */ 3365 protected int onProcess(QueuedInputEvent q) { 3366 return FORWARD; 3367 } 3368 3369 /** 3370 * Called when an event is being delivered to the next stage. 3371 */ 3372 protected void onDeliverToNext(QueuedInputEvent q) { 3373 if (mNext != null) { 3374 mNext.deliver(q); 3375 } else { 3376 finishInputEvent(q); 3377 } 3378 } 3379 } 3380 3381 /** 3382 * Base class for implementing an input pipeline stage that supports 3383 * asynchronous and out-of-order processing of input events. 3384 * <p> 3385 * In addition to what a normal input stage can do, an asynchronous 3386 * input stage may also defer an input event that has been delivered to it 3387 * and finish or forward it later. 3388 * </p> 3389 */ 3390 abstract class AsyncInputStage extends InputStage { 3391 private final String mTraceCounter; 3392 3393 private QueuedInputEvent mQueueHead; 3394 private QueuedInputEvent mQueueTail; 3395 private int mQueueLength; 3396 3397 protected static final int DEFER = 3; 3398 3399 /** 3400 * Creates an asynchronous input stage. 3401 * @param next The next stage to which events should be forwarded. 3402 * @param traceCounter The name of a counter to record the size of 3403 * the queue of pending events. 3404 */ 3405 public AsyncInputStage(InputStage next, String traceCounter) { 3406 super(next); 3407 mTraceCounter = traceCounter; 3408 } 3409 3410 /** 3411 * Marks the event as deferred, which is to say that it will be handled 3412 * asynchronously. The caller is responsible for calling {@link #forward} 3413 * or {@link #finish} later when it is done handling the event. 3414 */ 3415 protected void defer(QueuedInputEvent q) { 3416 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3417 enqueue(q); 3418 } 3419 3420 @Override 3421 protected void forward(QueuedInputEvent q) { 3422 // Clear the deferred flag. 3423 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3424 3425 // Fast path if the queue is empty. 3426 QueuedInputEvent curr = mQueueHead; 3427 if (curr == null) { 3428 super.forward(q); 3429 return; 3430 } 3431 3432 // Determine whether the event must be serialized behind any others 3433 // before it can be delivered to the next stage. This is done because 3434 // deferred events might be handled out of order by the stage. 3435 final int deviceId = q.mEvent.getDeviceId(); 3436 QueuedInputEvent prev = null; 3437 boolean blocked = false; 3438 while (curr != null && curr != q) { 3439 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3440 blocked = true; 3441 } 3442 prev = curr; 3443 curr = curr.mNext; 3444 } 3445 3446 // If the event is blocked, then leave it in the queue to be delivered later. 3447 // Note that the event might not yet be in the queue if it was not previously 3448 // deferred so we will enqueue it if needed. 3449 if (blocked) { 3450 if (curr == null) { 3451 enqueue(q); 3452 } 3453 return; 3454 } 3455 3456 // The event is not blocked. Deliver it immediately. 3457 if (curr != null) { 3458 curr = curr.mNext; 3459 dequeue(q, prev); 3460 } 3461 super.forward(q); 3462 3463 // Dequeuing this event may have unblocked successors. Deliver them. 3464 while (curr != null) { 3465 if (deviceId == curr.mEvent.getDeviceId()) { 3466 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3467 break; 3468 } 3469 QueuedInputEvent next = curr.mNext; 3470 dequeue(curr, prev); 3471 super.forward(curr); 3472 curr = next; 3473 } else { 3474 prev = curr; 3475 curr = curr.mNext; 3476 } 3477 } 3478 } 3479 3480 @Override 3481 protected void apply(QueuedInputEvent q, int result) { 3482 if (result == DEFER) { 3483 defer(q); 3484 } else { 3485 super.apply(q, result); 3486 } 3487 } 3488 3489 private void enqueue(QueuedInputEvent q) { 3490 if (mQueueTail == null) { 3491 mQueueHead = q; 3492 mQueueTail = q; 3493 } else { 3494 mQueueTail.mNext = q; 3495 mQueueTail = q; 3496 } 3497 3498 mQueueLength += 1; 3499 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3500 } 3501 3502 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3503 if (prev == null) { 3504 mQueueHead = q.mNext; 3505 } else { 3506 prev.mNext = q.mNext; 3507 } 3508 if (mQueueTail == q) { 3509 mQueueTail = prev; 3510 } 3511 q.mNext = null; 3512 3513 mQueueLength -= 1; 3514 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3515 } 3516 } 3517 3518 /** 3519 * Delivers pre-ime input events to a native activity. 3520 * Does not support pointer events. 3521 */ 3522 final class NativePreImeInputStage extends AsyncInputStage 3523 implements InputQueue.FinishedInputEventCallback { 3524 public NativePreImeInputStage(InputStage next, String traceCounter) { 3525 super(next, traceCounter); 3526 } 3527 3528 @Override 3529 protected int onProcess(QueuedInputEvent q) { 3530 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3531 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3532 return DEFER; 3533 } 3534 return FORWARD; 3535 } 3536 3537 @Override 3538 public void onFinishedInputEvent(Object token, boolean handled) { 3539 QueuedInputEvent q = (QueuedInputEvent)token; 3540 if (handled) { 3541 finish(q, true); 3542 return; 3543 } 3544 forward(q); 3545 } 3546 } 3547 3548 /** 3549 * Delivers pre-ime input events to the view hierarchy. 3550 * Does not support pointer events. 3551 */ 3552 final class ViewPreImeInputStage extends InputStage { 3553 public ViewPreImeInputStage(InputStage next) { 3554 super(next); 3555 } 3556 3557 @Override 3558 protected int onProcess(QueuedInputEvent q) { 3559 if (q.mEvent instanceof KeyEvent) { 3560 return processKeyEvent(q); 3561 } 3562 return FORWARD; 3563 } 3564 3565 private int processKeyEvent(QueuedInputEvent q) { 3566 final KeyEvent event = (KeyEvent)q.mEvent; 3567 if (mView.dispatchKeyEventPreIme(event)) { 3568 return FINISH_HANDLED; 3569 } 3570 return FORWARD; 3571 } 3572 } 3573 3574 /** 3575 * Delivers input events to the ime. 3576 * Does not support pointer events. 3577 */ 3578 final class ImeInputStage extends AsyncInputStage 3579 implements InputMethodManager.FinishedInputEventCallback { 3580 public ImeInputStage(InputStage next, String traceCounter) { 3581 super(next, traceCounter); 3582 } 3583 3584 @Override 3585 protected int onProcess(QueuedInputEvent q) { 3586 if (mLastWasImTarget) { 3587 InputMethodManager imm = InputMethodManager.peekInstance(); 3588 if (imm != null) { 3589 final InputEvent event = q.mEvent; 3590 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3591 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3592 if (result == InputMethodManager.DISPATCH_HANDLED) { 3593 return FINISH_HANDLED; 3594 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3595 return FINISH_NOT_HANDLED; 3596 } else { 3597 return DEFER; // callback will be invoked later 3598 } 3599 } 3600 } 3601 return FORWARD; 3602 } 3603 3604 @Override 3605 public void onFinishedInputEvent(Object token, boolean handled) { 3606 QueuedInputEvent q = (QueuedInputEvent)token; 3607 if (handled) { 3608 finish(q, true); 3609 return; 3610 } 3611 forward(q); 3612 } 3613 } 3614 3615 /** 3616 * Performs early processing of post-ime input events. 3617 */ 3618 final class EarlyPostImeInputStage extends InputStage { 3619 public EarlyPostImeInputStage(InputStage next) { 3620 super(next); 3621 } 3622 3623 @Override 3624 protected int onProcess(QueuedInputEvent q) { 3625 if (q.mEvent instanceof KeyEvent) { 3626 return processKeyEvent(q); 3627 } else { 3628 final int source = q.mEvent.getSource(); 3629 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3630 return processPointerEvent(q); 3631 } 3632 } 3633 return FORWARD; 3634 } 3635 3636 private int processKeyEvent(QueuedInputEvent q) { 3637 final KeyEvent event = (KeyEvent)q.mEvent; 3638 3639 // If the key's purpose is to exit touch mode then we consume it 3640 // and consider it handled. 3641 if (checkForLeavingTouchModeAndConsume(event)) { 3642 return FINISH_HANDLED; 3643 } 3644 3645 // Make sure the fallback event policy sees all keys that will be 3646 // delivered to the view hierarchy. 3647 mFallbackEventHandler.preDispatchKeyEvent(event); 3648 return FORWARD; 3649 } 3650 3651 private int processPointerEvent(QueuedInputEvent q) { 3652 final MotionEvent event = (MotionEvent)q.mEvent; 3653 3654 // Translate the pointer event for compatibility, if needed. 3655 if (mTranslator != null) { 3656 mTranslator.translateEventInScreenToAppWindow(event); 3657 } 3658 3659 // Enter touch mode on down or scroll. 3660 final int action = event.getAction(); 3661 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3662 ensureTouchMode(true); 3663 } 3664 3665 // Offset the scroll position. 3666 if (mCurScrollY != 0) { 3667 event.offsetLocation(0, mCurScrollY); 3668 } 3669 3670 // Remember the touch position for possible drag-initiation. 3671 if (event.isTouchEvent()) { 3672 mLastTouchPoint.x = event.getRawX(); 3673 mLastTouchPoint.y = event.getRawY(); 3674 } 3675 return FORWARD; 3676 } 3677 } 3678 3679 /** 3680 * Delivers post-ime input events to a native activity. 3681 */ 3682 final class NativePostImeInputStage extends AsyncInputStage 3683 implements InputQueue.FinishedInputEventCallback { 3684 public NativePostImeInputStage(InputStage next, String traceCounter) { 3685 super(next, traceCounter); 3686 } 3687 3688 @Override 3689 protected int onProcess(QueuedInputEvent q) { 3690 if (mInputQueue != null) { 3691 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3692 return DEFER; 3693 } 3694 return FORWARD; 3695 } 3696 3697 @Override 3698 public void onFinishedInputEvent(Object token, boolean handled) { 3699 QueuedInputEvent q = (QueuedInputEvent)token; 3700 if (handled) { 3701 finish(q, true); 3702 return; 3703 } 3704 forward(q); 3705 } 3706 } 3707 3708 /** 3709 * Delivers post-ime input events to the view hierarchy. 3710 */ 3711 final class ViewPostImeInputStage extends InputStage { 3712 public ViewPostImeInputStage(InputStage next) { 3713 super(next); 3714 } 3715 3716 @Override 3717 protected int onProcess(QueuedInputEvent q) { 3718 if (q.mEvent instanceof KeyEvent) { 3719 return processKeyEvent(q); 3720 } else { 3721 final int source = q.mEvent.getSource(); 3722 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3723 return processPointerEvent(q); 3724 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3725 return processTrackballEvent(q); 3726 } else { 3727 return processGenericMotionEvent(q); 3728 } 3729 } 3730 } 3731 3732 private int processKeyEvent(QueuedInputEvent q) { 3733 final KeyEvent event = (KeyEvent)q.mEvent; 3734 3735 // Deliver the key to the view hierarchy. 3736 if (mView.dispatchKeyEvent(event)) { 3737 return FINISH_HANDLED; 3738 } 3739 3740 // If the Control modifier is held, try to interpret the key as a shortcut. 3741 if (event.getAction() == KeyEvent.ACTION_DOWN 3742 && event.isCtrlPressed() 3743 && event.getRepeatCount() == 0 3744 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3745 if (mView.dispatchKeyShortcutEvent(event)) { 3746 return FINISH_HANDLED; 3747 } 3748 } 3749 3750 // Apply the fallback event policy. 3751 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3752 return FINISH_HANDLED; 3753 } 3754 3755 // Handle automatic focus changes. 3756 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3757 int direction = 0; 3758 switch (event.getKeyCode()) { 3759 case KeyEvent.KEYCODE_DPAD_LEFT: 3760 if (event.hasNoModifiers()) { 3761 direction = View.FOCUS_LEFT; 3762 } 3763 break; 3764 case KeyEvent.KEYCODE_DPAD_RIGHT: 3765 if (event.hasNoModifiers()) { 3766 direction = View.FOCUS_RIGHT; 3767 } 3768 break; 3769 case KeyEvent.KEYCODE_DPAD_UP: 3770 if (event.hasNoModifiers()) { 3771 direction = View.FOCUS_UP; 3772 } 3773 break; 3774 case KeyEvent.KEYCODE_DPAD_DOWN: 3775 if (event.hasNoModifiers()) { 3776 direction = View.FOCUS_DOWN; 3777 } 3778 break; 3779 case KeyEvent.KEYCODE_TAB: 3780 if (event.hasNoModifiers()) { 3781 direction = View.FOCUS_FORWARD; 3782 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3783 direction = View.FOCUS_BACKWARD; 3784 } 3785 break; 3786 } 3787 if (direction != 0) { 3788 View focused = mView.findFocus(); 3789 if (focused != null) { 3790 View v = focused.focusSearch(direction); 3791 if (v != null && v != focused) { 3792 // do the math the get the interesting rect 3793 // of previous focused into the coord system of 3794 // newly focused view 3795 focused.getFocusedRect(mTempRect); 3796 if (mView instanceof ViewGroup) { 3797 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3798 focused, mTempRect); 3799 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3800 v, mTempRect); 3801 } 3802 if (v.requestFocus(direction, mTempRect)) { 3803 playSoundEffect(SoundEffectConstants 3804 .getContantForFocusDirection(direction)); 3805 return FINISH_HANDLED; 3806 } 3807 } 3808 3809 // Give the focused view a last chance to handle the dpad key. 3810 if (mView.dispatchUnhandledMove(focused, direction)) { 3811 return FINISH_HANDLED; 3812 } 3813 } else { 3814 // find the best view to give focus to in this non-touch-mode with no-focus 3815 View v = focusSearch(null, direction); 3816 if (v != null && v.requestFocus(direction)) { 3817 return FINISH_HANDLED; 3818 } 3819 } 3820 } 3821 } 3822 return FORWARD; 3823 } 3824 3825 private int processPointerEvent(QueuedInputEvent q) { 3826 final MotionEvent event = (MotionEvent)q.mEvent; 3827 3828 if (mView.dispatchPointerEvent(event)) { 3829 return FINISH_HANDLED; 3830 } 3831 return FORWARD; 3832 } 3833 3834 private int processTrackballEvent(QueuedInputEvent q) { 3835 final MotionEvent event = (MotionEvent)q.mEvent; 3836 3837 if (mView.dispatchTrackballEvent(event)) { 3838 return FINISH_HANDLED; 3839 } 3840 return FORWARD; 3841 } 3842 3843 private int processGenericMotionEvent(QueuedInputEvent q) { 3844 final MotionEvent event = (MotionEvent)q.mEvent; 3845 3846 // Deliver the event to the view. 3847 if (mView.dispatchGenericMotionEvent(event)) { 3848 return FINISH_HANDLED; 3849 } 3850 return FORWARD; 3851 } 3852 } 3853 3854 /** 3855 * Performs synthesis of new input events from unhandled input events. 3856 */ 3857 final class SyntheticInputStage extends InputStage { 3858 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3859 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3860 private final SyntheticTouchNavigationHandler mTouchNavigation = 3861 new SyntheticTouchNavigationHandler(); 3862 3863 public SyntheticInputStage() { 3864 super(null); 3865 } 3866 3867 @Override 3868 protected int onProcess(QueuedInputEvent q) { 3869 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3870 if (q.mEvent instanceof MotionEvent) { 3871 final MotionEvent event = (MotionEvent)q.mEvent; 3872 final int source = event.getSource(); 3873 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3874 mTrackball.process(event); 3875 return FINISH_HANDLED; 3876 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3877 mJoystick.process(event); 3878 return FINISH_HANDLED; 3879 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3880 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3881 mTouchNavigation.process(event); 3882 return FINISH_HANDLED; 3883 } 3884 } 3885 return FORWARD; 3886 } 3887 3888 @Override 3889 protected void onDeliverToNext(QueuedInputEvent q) { 3890 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 3891 // Cancel related synthetic events if any prior stage has handled the event. 3892 if (q.mEvent instanceof MotionEvent) { 3893 final MotionEvent event = (MotionEvent)q.mEvent; 3894 final int source = event.getSource(); 3895 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3896 mTrackball.cancel(event); 3897 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3898 mJoystick.cancel(event); 3899 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3900 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3901 mTouchNavigation.cancel(event); 3902 } 3903 } 3904 } 3905 super.onDeliverToNext(q); 3906 } 3907 } 3908 3909 /** 3910 * Creates dpad events from unhandled trackball movements. 3911 */ 3912 final class SyntheticTrackballHandler { 3913 private final TrackballAxis mX = new TrackballAxis(); 3914 private final TrackballAxis mY = new TrackballAxis(); 3915 private long mLastTime; 3916 3917 public void process(MotionEvent event) { 3918 // Translate the trackball event into DPAD keys and try to deliver those. 3919 long curTime = SystemClock.uptimeMillis(); 3920 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 3921 // It has been too long since the last movement, 3922 // so restart at the beginning. 3923 mX.reset(0); 3924 mY.reset(0); 3925 mLastTime = curTime; 3926 } 3927 3928 final int action = event.getAction(); 3929 final int metaState = event.getMetaState(); 3930 switch (action) { 3931 case MotionEvent.ACTION_DOWN: 3932 mX.reset(2); 3933 mY.reset(2); 3934 enqueueInputEvent(new KeyEvent(curTime, curTime, 3935 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3936 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3937 InputDevice.SOURCE_KEYBOARD)); 3938 break; 3939 case MotionEvent.ACTION_UP: 3940 mX.reset(2); 3941 mY.reset(2); 3942 enqueueInputEvent(new KeyEvent(curTime, curTime, 3943 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3944 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3945 InputDevice.SOURCE_KEYBOARD)); 3946 break; 3947 } 3948 3949 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 3950 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 3951 + " move=" + event.getX() 3952 + " / Y=" + mY.position + " step=" 3953 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 3954 + " move=" + event.getY()); 3955 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 3956 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 3957 3958 // Generate DPAD events based on the trackball movement. 3959 // We pick the axis that has moved the most as the direction of 3960 // the DPAD. When we generate DPAD events for one axis, then the 3961 // other axis is reset -- we don't want to perform DPAD jumps due 3962 // to slight movements in the trackball when making major movements 3963 // along the other axis. 3964 int keycode = 0; 3965 int movement = 0; 3966 float accel = 1; 3967 if (xOff > yOff) { 3968 movement = mX.generate(); 3969 if (movement != 0) { 3970 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 3971 : KeyEvent.KEYCODE_DPAD_LEFT; 3972 accel = mX.acceleration; 3973 mY.reset(2); 3974 } 3975 } else if (yOff > 0) { 3976 movement = mY.generate(); 3977 if (movement != 0) { 3978 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 3979 : KeyEvent.KEYCODE_DPAD_UP; 3980 accel = mY.acceleration; 3981 mX.reset(2); 3982 } 3983 } 3984 3985 if (keycode != 0) { 3986 if (movement < 0) movement = -movement; 3987 int accelMovement = (int)(movement * accel); 3988 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 3989 + " accelMovement=" + accelMovement 3990 + " accel=" + accel); 3991 if (accelMovement > movement) { 3992 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 3993 + keycode); 3994 movement--; 3995 int repeatCount = accelMovement - movement; 3996 enqueueInputEvent(new KeyEvent(curTime, curTime, 3997 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 3998 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3999 InputDevice.SOURCE_KEYBOARD)); 4000 } 4001 while (movement > 0) { 4002 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4003 + keycode); 4004 movement--; 4005 curTime = SystemClock.uptimeMillis(); 4006 enqueueInputEvent(new KeyEvent(curTime, curTime, 4007 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4008 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4009 InputDevice.SOURCE_KEYBOARD)); 4010 enqueueInputEvent(new KeyEvent(curTime, curTime, 4011 KeyEvent.ACTION_UP, keycode, 0, metaState, 4012 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4013 InputDevice.SOURCE_KEYBOARD)); 4014 } 4015 mLastTime = curTime; 4016 } 4017 } 4018 4019 public void cancel(MotionEvent event) { 4020 mLastTime = Integer.MIN_VALUE; 4021 4022 // If we reach this, we consumed a trackball event. 4023 // Because we will not translate the trackball event into a key event, 4024 // touch mode will not exit, so we exit touch mode here. 4025 if (mView != null && mAdded) { 4026 ensureTouchMode(false); 4027 } 4028 } 4029 } 4030 4031 /** 4032 * Maintains state information for a single trackball axis, generating 4033 * discrete (DPAD) movements based on raw trackball motion. 4034 */ 4035 static final class TrackballAxis { 4036 /** 4037 * The maximum amount of acceleration we will apply. 4038 */ 4039 static final float MAX_ACCELERATION = 20; 4040 4041 /** 4042 * The maximum amount of time (in milliseconds) between events in order 4043 * for us to consider the user to be doing fast trackball movements, 4044 * and thus apply an acceleration. 4045 */ 4046 static final long FAST_MOVE_TIME = 150; 4047 4048 /** 4049 * Scaling factor to the time (in milliseconds) between events to how 4050 * much to multiple/divide the current acceleration. When movement 4051 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4052 * FAST_MOVE_TIME it divides it. 4053 */ 4054 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4055 4056 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4057 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4058 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4059 4060 float position; 4061 float acceleration = 1; 4062 long lastMoveTime = 0; 4063 int step; 4064 int dir; 4065 int nonAccelMovement; 4066 4067 void reset(int _step) { 4068 position = 0; 4069 acceleration = 1; 4070 lastMoveTime = 0; 4071 step = _step; 4072 dir = 0; 4073 } 4074 4075 /** 4076 * Add trackball movement into the state. If the direction of movement 4077 * has been reversed, the state is reset before adding the 4078 * movement (so that you don't have to compensate for any previously 4079 * collected movement before see the result of the movement in the 4080 * new direction). 4081 * 4082 * @return Returns the absolute value of the amount of movement 4083 * collected so far. 4084 */ 4085 float collect(float off, long time, String axis) { 4086 long normTime; 4087 if (off > 0) { 4088 normTime = (long)(off * FAST_MOVE_TIME); 4089 if (dir < 0) { 4090 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4091 position = 0; 4092 step = 0; 4093 acceleration = 1; 4094 lastMoveTime = 0; 4095 } 4096 dir = 1; 4097 } else if (off < 0) { 4098 normTime = (long)((-off) * FAST_MOVE_TIME); 4099 if (dir > 0) { 4100 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4101 position = 0; 4102 step = 0; 4103 acceleration = 1; 4104 lastMoveTime = 0; 4105 } 4106 dir = -1; 4107 } else { 4108 normTime = 0; 4109 } 4110 4111 // The number of milliseconds between each movement that is 4112 // considered "normal" and will not result in any acceleration 4113 // or deceleration, scaled by the offset we have here. 4114 if (normTime > 0) { 4115 long delta = time - lastMoveTime; 4116 lastMoveTime = time; 4117 float acc = acceleration; 4118 if (delta < normTime) { 4119 // The user is scrolling rapidly, so increase acceleration. 4120 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4121 if (scale > 1) acc *= scale; 4122 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4123 + off + " normTime=" + normTime + " delta=" + delta 4124 + " scale=" + scale + " acc=" + acc); 4125 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4126 } else { 4127 // The user is scrolling slowly, so decrease acceleration. 4128 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4129 if (scale > 1) acc /= scale; 4130 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4131 + off + " normTime=" + normTime + " delta=" + delta 4132 + " scale=" + scale + " acc=" + acc); 4133 acceleration = acc > 1 ? acc : 1; 4134 } 4135 } 4136 position += off; 4137 return Math.abs(position); 4138 } 4139 4140 /** 4141 * Generate the number of discrete movement events appropriate for 4142 * the currently collected trackball movement. 4143 * 4144 * @return Returns the number of discrete movements, either positive 4145 * or negative, or 0 if there is not enough trackball movement yet 4146 * for a discrete movement. 4147 */ 4148 int generate() { 4149 int movement = 0; 4150 nonAccelMovement = 0; 4151 do { 4152 final int dir = position >= 0 ? 1 : -1; 4153 switch (step) { 4154 // If we are going to execute the first step, then we want 4155 // to do this as soon as possible instead of waiting for 4156 // a full movement, in order to make things look responsive. 4157 case 0: 4158 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4159 return movement; 4160 } 4161 movement += dir; 4162 nonAccelMovement += dir; 4163 step = 1; 4164 break; 4165 // If we have generated the first movement, then we need 4166 // to wait for the second complete trackball motion before 4167 // generating the second discrete movement. 4168 case 1: 4169 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4170 return movement; 4171 } 4172 movement += dir; 4173 nonAccelMovement += dir; 4174 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4175 step = 2; 4176 break; 4177 // After the first two, we generate discrete movements 4178 // consistently with the trackball, applying an acceleration 4179 // if the trackball is moving quickly. This is a simple 4180 // acceleration on top of what we already compute based 4181 // on how quickly the wheel is being turned, to apply 4182 // a longer increasing acceleration to continuous movement 4183 // in one direction. 4184 default: 4185 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4186 return movement; 4187 } 4188 movement += dir; 4189 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4190 float acc = acceleration; 4191 acc *= 1.1f; 4192 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4193 break; 4194 } 4195 } while (true); 4196 } 4197 } 4198 4199 /** 4200 * Creates dpad events from unhandled joystick movements. 4201 */ 4202 final class SyntheticJoystickHandler extends Handler { 4203 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4204 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4205 4206 private int mLastXDirection; 4207 private int mLastYDirection; 4208 private int mLastXKeyCode; 4209 private int mLastYKeyCode; 4210 4211 public SyntheticJoystickHandler() { 4212 super(true); 4213 } 4214 4215 @Override 4216 public void handleMessage(Message msg) { 4217 switch (msg.what) { 4218 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4219 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4220 KeyEvent oldEvent = (KeyEvent)msg.obj; 4221 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4222 SystemClock.uptimeMillis(), 4223 oldEvent.getRepeatCount() + 1); 4224 if (mAttachInfo.mHasWindowFocus) { 4225 enqueueInputEvent(e); 4226 Message m = obtainMessage(msg.what, e); 4227 m.setAsynchronous(true); 4228 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4229 } 4230 } break; 4231 } 4232 } 4233 4234 public void process(MotionEvent event) { 4235 update(event, true); 4236 } 4237 4238 public void cancel(MotionEvent event) { 4239 update(event, false); 4240 } 4241 4242 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4243 final long time = event.getEventTime(); 4244 final int metaState = event.getMetaState(); 4245 final int deviceId = event.getDeviceId(); 4246 final int source = event.getSource(); 4247 4248 int xDirection = joystickAxisValueToDirection( 4249 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4250 if (xDirection == 0) { 4251 xDirection = joystickAxisValueToDirection(event.getX()); 4252 } 4253 4254 int yDirection = joystickAxisValueToDirection( 4255 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4256 if (yDirection == 0) { 4257 yDirection = joystickAxisValueToDirection(event.getY()); 4258 } 4259 4260 if (xDirection != mLastXDirection) { 4261 if (mLastXKeyCode != 0) { 4262 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4263 enqueueInputEvent(new KeyEvent(time, time, 4264 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4265 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4266 mLastXKeyCode = 0; 4267 } 4268 4269 mLastXDirection = xDirection; 4270 4271 if (xDirection != 0 && synthesizeNewKeys) { 4272 mLastXKeyCode = xDirection > 0 4273 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4274 final KeyEvent e = new KeyEvent(time, time, 4275 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4276 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4277 enqueueInputEvent(e); 4278 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4279 m.setAsynchronous(true); 4280 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4281 } 4282 } 4283 4284 if (yDirection != mLastYDirection) { 4285 if (mLastYKeyCode != 0) { 4286 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4287 enqueueInputEvent(new KeyEvent(time, time, 4288 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4289 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4290 mLastYKeyCode = 0; 4291 } 4292 4293 mLastYDirection = yDirection; 4294 4295 if (yDirection != 0 && synthesizeNewKeys) { 4296 mLastYKeyCode = yDirection > 0 4297 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4298 final KeyEvent e = new KeyEvent(time, time, 4299 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4300 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4301 enqueueInputEvent(e); 4302 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4303 m.setAsynchronous(true); 4304 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4305 } 4306 } 4307 } 4308 4309 private int joystickAxisValueToDirection(float value) { 4310 if (value >= 0.5f) { 4311 return 1; 4312 } else if (value <= -0.5f) { 4313 return -1; 4314 } else { 4315 return 0; 4316 } 4317 } 4318 } 4319 4320 /** 4321 * Creates dpad events from unhandled touch navigation movements. 4322 */ 4323 final class SyntheticTouchNavigationHandler extends Handler { 4324 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4325 private static final boolean LOCAL_DEBUG = false; 4326 4327 // Assumed nominal width and height in millimeters of a touch navigation pad, 4328 // if no resolution information is available from the input system. 4329 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4330 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4331 4332 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4333 4334 // Tap timeout in milliseconds. 4335 private static final int TAP_TIMEOUT = 250; 4336 4337 // The maximum distance traveled for a gesture to be considered a tap in millimeters. 4338 private static final int TAP_SLOP_MILLIMETERS = 5; 4339 4340 // The nominal distance traveled to move by one unit. 4341 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4342 4343 // Minimum and maximum fling velocity in ticks per second. 4344 // The minimum velocity should be set such that we perform enough ticks per 4345 // second that the fling appears to be fluid. For example, if we set the minimum 4346 // to 2 ticks per second, then there may be up to half a second delay between the next 4347 // to last and last ticks which is noticeably discrete and jerky. This value should 4348 // probably not be set to anything less than about 4. 4349 // If fling accuracy is a problem then consider tuning the tick distance instead. 4350 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4351 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4352 4353 // Fling velocity decay factor applied after each new key is emitted. 4354 // This parameter controls the deceleration and overall duration of the fling. 4355 // The fling stops automatically when its velocity drops below the minimum 4356 // fling velocity defined above. 4357 private static final float FLING_TICK_DECAY = 0.8f; 4358 4359 /* The input device that we are tracking. */ 4360 4361 private int mCurrentDeviceId = -1; 4362 private int mCurrentSource; 4363 private boolean mCurrentDeviceSupported; 4364 4365 /* Configuration for the current input device. */ 4366 4367 // The tap timeout and scaled slop. 4368 private int mConfigTapTimeout; 4369 private float mConfigTapSlop; 4370 4371 // The scaled tick distance. A movement of this amount should generally translate 4372 // into a single dpad event in a given direction. 4373 private float mConfigTickDistance; 4374 4375 // The minimum and maximum scaled fling velocity. 4376 private float mConfigMinFlingVelocity; 4377 private float mConfigMaxFlingVelocity; 4378 4379 /* Tracking state. */ 4380 4381 // The velocity tracker for detecting flings. 4382 private VelocityTracker mVelocityTracker; 4383 4384 // The active pointer id, or -1 if none. 4385 private int mActivePointerId = -1; 4386 4387 // Time and location where tracking started. 4388 private long mStartTime; 4389 private float mStartX; 4390 private float mStartY; 4391 4392 // Most recently observed position. 4393 private float mLastX; 4394 private float mLastY; 4395 4396 // Accumulated movement delta since the last direction key was sent. 4397 private float mAccumulatedX; 4398 private float mAccumulatedY; 4399 4400 // Set to true if any movement was delivered to the app. 4401 // Implies that tap slop was exceeded. 4402 private boolean mConsumedMovement; 4403 4404 // The most recently sent key down event. 4405 // The keycode remains set until the direction changes or a fling ends 4406 // so that repeated key events may be generated as required. 4407 private long mPendingKeyDownTime; 4408 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4409 private int mPendingKeyRepeatCount; 4410 private int mPendingKeyMetaState; 4411 4412 // The current fling velocity while a fling is in progress. 4413 private boolean mFlinging; 4414 private float mFlingVelocity; 4415 4416 public SyntheticTouchNavigationHandler() { 4417 super(true); 4418 } 4419 4420 public void process(MotionEvent event) { 4421 // Update the current device information. 4422 final long time = event.getEventTime(); 4423 final int deviceId = event.getDeviceId(); 4424 final int source = event.getSource(); 4425 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4426 finishKeys(time); 4427 finishTracking(time); 4428 mCurrentDeviceId = deviceId; 4429 mCurrentSource = source; 4430 mCurrentDeviceSupported = false; 4431 InputDevice device = event.getDevice(); 4432 if (device != null) { 4433 // In order to support an input device, we must know certain 4434 // characteristics about it, such as its size and resolution. 4435 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4436 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4437 if (xRange != null && yRange != null) { 4438 mCurrentDeviceSupported = true; 4439 4440 // Infer the resolution if it not actually known. 4441 float xRes = xRange.getResolution(); 4442 if (xRes <= 0) { 4443 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4444 } 4445 float yRes = yRange.getResolution(); 4446 if (yRes <= 0) { 4447 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4448 } 4449 float nominalRes = (xRes + yRes) * 0.5f; 4450 4451 // Precompute all of the configuration thresholds we will need. 4452 mConfigTapTimeout = TAP_TIMEOUT; 4453 mConfigTapSlop = TAP_SLOP_MILLIMETERS * nominalRes; 4454 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4455 mConfigMinFlingVelocity = 4456 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4457 mConfigMaxFlingVelocity = 4458 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4459 4460 if (LOCAL_DEBUG) { 4461 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4462 + " (" + Integer.toHexString(mCurrentSource) + "): " 4463 + "mConfigTapTimeout=" + mConfigTapTimeout 4464 + ", mConfigTapSlop=" + mConfigTapSlop 4465 + ", mConfigTickDistance=" + mConfigTickDistance 4466 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4467 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4468 } 4469 } 4470 } 4471 } 4472 if (!mCurrentDeviceSupported) { 4473 return; 4474 } 4475 4476 // Handle the event. 4477 final int action = event.getActionMasked(); 4478 switch (action) { 4479 case MotionEvent.ACTION_DOWN: { 4480 boolean caughtFling = mFlinging; 4481 finishKeys(time); 4482 finishTracking(time); 4483 mActivePointerId = event.getPointerId(0); 4484 mVelocityTracker = VelocityTracker.obtain(); 4485 mVelocityTracker.addMovement(event); 4486 mStartTime = time; 4487 mStartX = event.getX(); 4488 mStartY = event.getY(); 4489 mLastX = mStartX; 4490 mLastY = mStartY; 4491 mAccumulatedX = 0; 4492 mAccumulatedY = 0; 4493 4494 // If we caught a fling, then pretend that the tap slop has already 4495 // been exceeded to suppress taps whose only purpose is to stop the fling. 4496 mConsumedMovement = caughtFling; 4497 break; 4498 } 4499 4500 case MotionEvent.ACTION_MOVE: 4501 case MotionEvent.ACTION_UP: { 4502 if (mActivePointerId < 0) { 4503 break; 4504 } 4505 final int index = event.findPointerIndex(mActivePointerId); 4506 if (index < 0) { 4507 finishKeys(time); 4508 finishTracking(time); 4509 break; 4510 } 4511 4512 mVelocityTracker.addMovement(event); 4513 final float x = event.getX(index); 4514 final float y = event.getY(index); 4515 mAccumulatedX += x - mLastX; 4516 mAccumulatedY += y - mLastY; 4517 mLastX = x; 4518 mLastY = y; 4519 4520 // Consume any accumulated movement so far. 4521 final int metaState = event.getMetaState(); 4522 consumeAccumulatedMovement(time, metaState); 4523 4524 // Detect taps and flings. 4525 if (action == MotionEvent.ACTION_UP) { 4526 if (!mConsumedMovement 4527 && Math.hypot(mLastX - mStartX, mLastY - mStartY) < mConfigTapSlop 4528 && time <= mStartTime + mConfigTapTimeout) { 4529 // It's a tap! 4530 finishKeys(time); 4531 sendKeyDownOrRepeat(time, KeyEvent.KEYCODE_DPAD_CENTER, metaState); 4532 sendKeyUp(time); 4533 } else if (mConsumedMovement 4534 && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4535 // It might be a fling. 4536 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4537 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4538 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4539 if (!startFling(time, vx, vy)) { 4540 finishKeys(time); 4541 } 4542 } 4543 finishTracking(time); 4544 } 4545 break; 4546 } 4547 4548 case MotionEvent.ACTION_CANCEL: { 4549 finishKeys(time); 4550 finishTracking(time); 4551 break; 4552 } 4553 } 4554 } 4555 4556 public void cancel(MotionEvent event) { 4557 if (mCurrentDeviceId == event.getDeviceId() 4558 && mCurrentSource == event.getSource()) { 4559 final long time = event.getEventTime(); 4560 finishKeys(time); 4561 finishTracking(time); 4562 } 4563 } 4564 4565 private void finishKeys(long time) { 4566 cancelFling(); 4567 sendKeyUp(time); 4568 } 4569 4570 private void finishTracking(long time) { 4571 if (mActivePointerId >= 0) { 4572 mActivePointerId = -1; 4573 mVelocityTracker.recycle(); 4574 mVelocityTracker = null; 4575 } 4576 } 4577 4578 private void consumeAccumulatedMovement(long time, int metaState) { 4579 final float absX = Math.abs(mAccumulatedX); 4580 final float absY = Math.abs(mAccumulatedY); 4581 if (absX >= absY) { 4582 if (absX >= mConfigTickDistance) { 4583 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4584 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4585 mAccumulatedY = 0; 4586 mConsumedMovement = true; 4587 } 4588 } else { 4589 if (absY >= mConfigTickDistance) { 4590 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4591 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4592 mAccumulatedX = 0; 4593 mConsumedMovement = true; 4594 } 4595 } 4596 } 4597 4598 private float consumeAccumulatedMovement(long time, int metaState, 4599 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4600 while (accumulator <= -mConfigTickDistance) { 4601 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4602 accumulator += mConfigTickDistance; 4603 } 4604 while (accumulator >= mConfigTickDistance) { 4605 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4606 accumulator -= mConfigTickDistance; 4607 } 4608 return accumulator; 4609 } 4610 4611 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4612 if (mPendingKeyCode != keyCode) { 4613 sendKeyUp(time); 4614 mPendingKeyDownTime = time; 4615 mPendingKeyCode = keyCode; 4616 mPendingKeyRepeatCount = 0; 4617 } else { 4618 mPendingKeyRepeatCount += 1; 4619 } 4620 mPendingKeyMetaState = metaState; 4621 4622 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4623 // but it doesn't quite make sense when simulating the events in this way. 4624 if (LOCAL_DEBUG) { 4625 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4626 + ", repeatCount=" + mPendingKeyRepeatCount 4627 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4628 } 4629 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4630 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4631 mPendingKeyMetaState, mCurrentDeviceId, 4632 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4633 } 4634 4635 private void sendKeyUp(long time) { 4636 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4637 if (LOCAL_DEBUG) { 4638 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4639 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4640 } 4641 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4642 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4643 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4644 mCurrentSource)); 4645 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4646 } 4647 } 4648 4649 private boolean startFling(long time, float vx, float vy) { 4650 if (LOCAL_DEBUG) { 4651 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4652 + ", min=" + mConfigMinFlingVelocity); 4653 } 4654 4655 // Flings must be oriented in the same direction as the preceding movements. 4656 switch (mPendingKeyCode) { 4657 case KeyEvent.KEYCODE_DPAD_LEFT: 4658 if (-vx >= mConfigMinFlingVelocity 4659 && Math.abs(vy) < mConfigMinFlingVelocity) { 4660 mFlingVelocity = -vx; 4661 break; 4662 } 4663 return false; 4664 4665 case KeyEvent.KEYCODE_DPAD_RIGHT: 4666 if (vx >= mConfigMinFlingVelocity 4667 && Math.abs(vy) < mConfigMinFlingVelocity) { 4668 mFlingVelocity = vx; 4669 break; 4670 } 4671 return false; 4672 4673 case KeyEvent.KEYCODE_DPAD_UP: 4674 if (-vy >= mConfigMinFlingVelocity 4675 && Math.abs(vx) < mConfigMinFlingVelocity) { 4676 mFlingVelocity = -vy; 4677 break; 4678 } 4679 return false; 4680 4681 case KeyEvent.KEYCODE_DPAD_DOWN: 4682 if (vy >= mConfigMinFlingVelocity 4683 && Math.abs(vx) < mConfigMinFlingVelocity) { 4684 mFlingVelocity = vy; 4685 break; 4686 } 4687 return false; 4688 } 4689 4690 // Post the first fling event. 4691 mFlinging = postFling(time); 4692 return mFlinging; 4693 } 4694 4695 private boolean postFling(long time) { 4696 // The idea here is to estimate the time when the pointer would have 4697 // traveled one tick distance unit given the current fling velocity. 4698 // This effect creates continuity of motion. 4699 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4700 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4701 postAtTime(mFlingRunnable, time + delay); 4702 if (LOCAL_DEBUG) { 4703 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4704 + mFlingVelocity + ", delay=" + delay 4705 + ", keyCode=" + mPendingKeyCode); 4706 } 4707 return true; 4708 } 4709 return false; 4710 } 4711 4712 private void cancelFling() { 4713 if (mFlinging) { 4714 removeCallbacks(mFlingRunnable); 4715 mFlinging = false; 4716 } 4717 } 4718 4719 private final Runnable mFlingRunnable = new Runnable() { 4720 @Override 4721 public void run() { 4722 final long time = SystemClock.uptimeMillis(); 4723 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4724 mFlingVelocity *= FLING_TICK_DECAY; 4725 if (!postFling(time)) { 4726 mFlinging = false; 4727 finishKeys(time); 4728 } 4729 } 4730 }; 4731 } 4732 4733 /** 4734 * Returns true if the key is used for keyboard navigation. 4735 * @param keyEvent The key event. 4736 * @return True if the key is used for keyboard navigation. 4737 */ 4738 private static boolean isNavigationKey(KeyEvent keyEvent) { 4739 switch (keyEvent.getKeyCode()) { 4740 case KeyEvent.KEYCODE_DPAD_LEFT: 4741 case KeyEvent.KEYCODE_DPAD_RIGHT: 4742 case KeyEvent.KEYCODE_DPAD_UP: 4743 case KeyEvent.KEYCODE_DPAD_DOWN: 4744 case KeyEvent.KEYCODE_DPAD_CENTER: 4745 case KeyEvent.KEYCODE_PAGE_UP: 4746 case KeyEvent.KEYCODE_PAGE_DOWN: 4747 case KeyEvent.KEYCODE_MOVE_HOME: 4748 case KeyEvent.KEYCODE_MOVE_END: 4749 case KeyEvent.KEYCODE_TAB: 4750 case KeyEvent.KEYCODE_SPACE: 4751 case KeyEvent.KEYCODE_ENTER: 4752 return true; 4753 } 4754 return false; 4755 } 4756 4757 /** 4758 * Returns true if the key is used for typing. 4759 * @param keyEvent The key event. 4760 * @return True if the key is used for typing. 4761 */ 4762 private static boolean isTypingKey(KeyEvent keyEvent) { 4763 return keyEvent.getUnicodeChar() > 0; 4764 } 4765 4766 /** 4767 * See if the key event means we should leave touch mode (and leave touch mode if so). 4768 * @param event The key event. 4769 * @return Whether this key event should be consumed (meaning the act of 4770 * leaving touch mode alone is considered the event). 4771 */ 4772 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4773 // Only relevant in touch mode. 4774 if (!mAttachInfo.mInTouchMode) { 4775 return false; 4776 } 4777 4778 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4779 final int action = event.getAction(); 4780 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4781 return false; 4782 } 4783 4784 // Don't leave touch mode if the IME told us not to. 4785 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4786 return false; 4787 } 4788 4789 // If the key can be used for keyboard navigation then leave touch mode 4790 // and select a focused view if needed (in ensureTouchMode). 4791 // When a new focused view is selected, we consume the navigation key because 4792 // navigation doesn't make much sense unless a view already has focus so 4793 // the key's purpose is to set focus. 4794 if (isNavigationKey(event)) { 4795 return ensureTouchMode(false); 4796 } 4797 4798 // If the key can be used for typing then leave touch mode 4799 // and select a focused view if needed (in ensureTouchMode). 4800 // Always allow the view to process the typing key. 4801 if (isTypingKey(event)) { 4802 ensureTouchMode(false); 4803 return false; 4804 } 4805 4806 return false; 4807 } 4808 4809 /* drag/drop */ 4810 void setLocalDragState(Object obj) { 4811 mLocalDragState = obj; 4812 } 4813 4814 private void handleDragEvent(DragEvent event) { 4815 // From the root, only drag start/end/location are dispatched. entered/exited 4816 // are determined and dispatched by the viewgroup hierarchy, who then report 4817 // that back here for ultimate reporting back to the framework. 4818 if (mView != null && mAdded) { 4819 final int what = event.mAction; 4820 4821 if (what == DragEvent.ACTION_DRAG_EXITED) { 4822 // A direct EXITED event means that the window manager knows we've just crossed 4823 // a window boundary, so the current drag target within this one must have 4824 // just been exited. Send it the usual notifications and then we're done 4825 // for now. 4826 mView.dispatchDragEvent(event); 4827 } else { 4828 // Cache the drag description when the operation starts, then fill it in 4829 // on subsequent calls as a convenience 4830 if (what == DragEvent.ACTION_DRAG_STARTED) { 4831 mCurrentDragView = null; // Start the current-recipient tracking 4832 mDragDescription = event.mClipDescription; 4833 } else { 4834 event.mClipDescription = mDragDescription; 4835 } 4836 4837 // For events with a [screen] location, translate into window coordinates 4838 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4839 mDragPoint.set(event.mX, event.mY); 4840 if (mTranslator != null) { 4841 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4842 } 4843 4844 if (mCurScrollY != 0) { 4845 mDragPoint.offset(0, mCurScrollY); 4846 } 4847 4848 event.mX = mDragPoint.x; 4849 event.mY = mDragPoint.y; 4850 } 4851 4852 // Remember who the current drag target is pre-dispatch 4853 final View prevDragView = mCurrentDragView; 4854 4855 // Now dispatch the drag/drop event 4856 boolean result = mView.dispatchDragEvent(event); 4857 4858 // If we changed apparent drag target, tell the OS about it 4859 if (prevDragView != mCurrentDragView) { 4860 try { 4861 if (prevDragView != null) { 4862 mWindowSession.dragRecipientExited(mWindow); 4863 } 4864 if (mCurrentDragView != null) { 4865 mWindowSession.dragRecipientEntered(mWindow); 4866 } 4867 } catch (RemoteException e) { 4868 Slog.e(TAG, "Unable to note drag target change"); 4869 } 4870 } 4871 4872 // Report the drop result when we're done 4873 if (what == DragEvent.ACTION_DROP) { 4874 mDragDescription = null; 4875 try { 4876 Log.i(TAG, "Reporting drop result: " + result); 4877 mWindowSession.reportDropResult(mWindow, result); 4878 } catch (RemoteException e) { 4879 Log.e(TAG, "Unable to report drop result"); 4880 } 4881 } 4882 4883 // When the drag operation ends, release any local state object 4884 // that may have been in use 4885 if (what == DragEvent.ACTION_DRAG_ENDED) { 4886 setLocalDragState(null); 4887 } 4888 } 4889 } 4890 event.recycle(); 4891 } 4892 4893 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 4894 if (mSeq != args.seq) { 4895 // The sequence has changed, so we need to update our value and make 4896 // sure to do a traversal afterward so the window manager is given our 4897 // most recent data. 4898 mSeq = args.seq; 4899 mAttachInfo.mForceReportNewAttributes = true; 4900 scheduleTraversals(); 4901 } 4902 if (mView == null) return; 4903 if (args.localChanges != 0) { 4904 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 4905 } 4906 if (mAttachInfo != null) { 4907 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 4908 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 4909 mAttachInfo.mGlobalSystemUiVisibility = visibility; 4910 mView.dispatchSystemUiVisibilityChanged(visibility); 4911 } 4912 } 4913 } 4914 4915 public void handleDispatchDoneAnimating() { 4916 if (mWindowsAnimating) { 4917 mWindowsAnimating = false; 4918 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 4919 scheduleTraversals(); 4920 } 4921 } 4922 } 4923 4924 public void getLastTouchPoint(Point outLocation) { 4925 outLocation.x = (int) mLastTouchPoint.x; 4926 outLocation.y = (int) mLastTouchPoint.y; 4927 } 4928 4929 public void setDragFocus(View newDragTarget) { 4930 if (mCurrentDragView != newDragTarget) { 4931 mCurrentDragView = newDragTarget; 4932 } 4933 } 4934 4935 private AudioManager getAudioManager() { 4936 if (mView == null) { 4937 throw new IllegalStateException("getAudioManager called when there is no mView"); 4938 } 4939 if (mAudioManager == null) { 4940 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 4941 } 4942 return mAudioManager; 4943 } 4944 4945 public AccessibilityInteractionController getAccessibilityInteractionController() { 4946 if (mView == null) { 4947 throw new IllegalStateException("getAccessibilityInteractionController" 4948 + " called when there is no mView"); 4949 } 4950 if (mAccessibilityInteractionController == null) { 4951 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 4952 } 4953 return mAccessibilityInteractionController; 4954 } 4955 4956 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 4957 boolean insetsPending) throws RemoteException { 4958 4959 float appScale = mAttachInfo.mApplicationScale; 4960 boolean restore = false; 4961 if (params != null && mTranslator != null) { 4962 restore = true; 4963 params.backup(); 4964 mTranslator.translateWindowLayout(params); 4965 } 4966 if (params != null) { 4967 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 4968 } 4969 mPendingConfiguration.seq = 0; 4970 //Log.d(TAG, ">>>>>> CALLING relayout"); 4971 if (params != null && mOrigWindowType != params.type) { 4972 // For compatibility with old apps, don't crash here. 4973 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 4974 Slog.w(TAG, "Window type can not be changed after " 4975 + "the window is added; ignoring change of " + mView); 4976 params.type = mOrigWindowType; 4977 } 4978 } 4979 int relayoutResult = mWindowSession.relayout( 4980 mWindow, mSeq, params, 4981 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 4982 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 4983 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 4984 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 4985 mPendingConfiguration, mSurface); 4986 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 4987 if (restore) { 4988 params.restore(); 4989 } 4990 4991 if (mTranslator != null) { 4992 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 4993 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 4994 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 4995 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 4996 } 4997 return relayoutResult; 4998 } 4999 5000 /** 5001 * {@inheritDoc} 5002 */ 5003 public void playSoundEffect(int effectId) { 5004 checkThread(); 5005 5006 if (mMediaDisabled) { 5007 return; 5008 } 5009 5010 try { 5011 final AudioManager audioManager = getAudioManager(); 5012 5013 switch (effectId) { 5014 case SoundEffectConstants.CLICK: 5015 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5016 return; 5017 case SoundEffectConstants.NAVIGATION_DOWN: 5018 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5019 return; 5020 case SoundEffectConstants.NAVIGATION_LEFT: 5021 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5022 return; 5023 case SoundEffectConstants.NAVIGATION_RIGHT: 5024 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5025 return; 5026 case SoundEffectConstants.NAVIGATION_UP: 5027 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5028 return; 5029 default: 5030 throw new IllegalArgumentException("unknown effect id " + effectId + 5031 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5032 } 5033 } catch (IllegalStateException e) { 5034 // Exception thrown by getAudioManager() when mView is null 5035 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5036 e.printStackTrace(); 5037 } 5038 } 5039 5040 /** 5041 * {@inheritDoc} 5042 */ 5043 public boolean performHapticFeedback(int effectId, boolean always) { 5044 try { 5045 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5046 } catch (RemoteException e) { 5047 return false; 5048 } 5049 } 5050 5051 /** 5052 * {@inheritDoc} 5053 */ 5054 public View focusSearch(View focused, int direction) { 5055 checkThread(); 5056 if (!(mView instanceof ViewGroup)) { 5057 return null; 5058 } 5059 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5060 } 5061 5062 public void debug() { 5063 mView.debug(); 5064 } 5065 5066 public void dumpGfxInfo(int[] info) { 5067 info[0] = info[1] = 0; 5068 if (mView != null) { 5069 getGfxInfo(mView, info); 5070 } 5071 } 5072 5073 private static void getGfxInfo(View view, int[] info) { 5074 DisplayList displayList = view.mDisplayList; 5075 info[0]++; 5076 if (displayList != null) { 5077 info[1] += displayList.getSize(); 5078 } 5079 5080 if (view instanceof ViewGroup) { 5081 ViewGroup group = (ViewGroup) view; 5082 5083 int count = group.getChildCount(); 5084 for (int i = 0; i < count; i++) { 5085 getGfxInfo(group.getChildAt(i), info); 5086 } 5087 } 5088 } 5089 5090 public void die(boolean immediate) { 5091 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5092 // done by dispatchDetachedFromWindow will cause havoc on return. 5093 if (immediate && !mIsInTraversal) { 5094 doDie(); 5095 } else { 5096 if (!mIsDrawing) { 5097 destroyHardwareRenderer(); 5098 } else { 5099 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5100 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5101 } 5102 mHandler.sendEmptyMessage(MSG_DIE); 5103 } 5104 } 5105 5106 void doDie() { 5107 checkThread(); 5108 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5109 synchronized (this) { 5110 if (mAdded) { 5111 dispatchDetachedFromWindow(); 5112 } 5113 5114 if (mAdded && !mFirst) { 5115 invalidateDisplayLists(); 5116 destroyHardwareRenderer(); 5117 5118 if (mView != null) { 5119 int viewVisibility = mView.getVisibility(); 5120 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5121 if (mWindowAttributesChanged || viewVisibilityChanged) { 5122 // If layout params have been changed, first give them 5123 // to the window manager to make sure it has the correct 5124 // animation info. 5125 try { 5126 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5127 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5128 mWindowSession.finishDrawing(mWindow); 5129 } 5130 } catch (RemoteException e) { 5131 } 5132 } 5133 5134 mSurface.release(); 5135 } 5136 } 5137 5138 mAdded = false; 5139 } 5140 } 5141 5142 public void requestUpdateConfiguration(Configuration config) { 5143 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5144 mHandler.sendMessage(msg); 5145 } 5146 5147 public void loadSystemProperties() { 5148 mHandler.post(new Runnable() { 5149 @Override 5150 public void run() { 5151 // Profiling 5152 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5153 profileRendering(mAttachInfo.mHasWindowFocus); 5154 5155 // Media (used by sound effects) 5156 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5157 5158 // Hardware rendering 5159 if (mAttachInfo.mHardwareRenderer != null) { 5160 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5161 invalidate(); 5162 } 5163 } 5164 5165 // Layout debugging 5166 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5167 if (layout != mAttachInfo.mDebugLayout) { 5168 mAttachInfo.mDebugLayout = layout; 5169 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5170 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5171 } 5172 } 5173 } 5174 }); 5175 } 5176 5177 private void destroyHardwareRenderer() { 5178 AttachInfo attachInfo = mAttachInfo; 5179 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5180 5181 if (hardwareRenderer != null) { 5182 if (mView != null) { 5183 hardwareRenderer.destroyHardwareResources(mView); 5184 } 5185 hardwareRenderer.destroy(true); 5186 hardwareRenderer.setRequested(false); 5187 5188 attachInfo.mHardwareRenderer = null; 5189 attachInfo.mHardwareAccelerated = false; 5190 } 5191 } 5192 5193 public void dispatchFinishInputConnection(InputConnection connection) { 5194 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5195 mHandler.sendMessage(msg); 5196 } 5197 5198 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5199 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5200 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5201 + " contentInsets=" + contentInsets.toShortString() 5202 + " visibleInsets=" + visibleInsets.toShortString() 5203 + " reportDraw=" + reportDraw); 5204 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5205 if (mTranslator != null) { 5206 mTranslator.translateRectInScreenToAppWindow(frame); 5207 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5208 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5209 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5210 } 5211 SomeArgs args = SomeArgs.obtain(); 5212 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5213 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5214 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5215 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5216 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5217 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5218 msg.obj = args; 5219 mHandler.sendMessage(msg); 5220 } 5221 5222 public void dispatchMoved(int newX, int newY) { 5223 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5224 if (mTranslator != null) { 5225 PointF point = new PointF(newX, newY); 5226 mTranslator.translatePointInScreenToAppWindow(point); 5227 newX = (int) (point.x + 0.5); 5228 newY = (int) (point.y + 0.5); 5229 } 5230 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5231 mHandler.sendMessage(msg); 5232 } 5233 5234 /** 5235 * Represents a pending input event that is waiting in a queue. 5236 * 5237 * Input events are processed in serial order by the timestamp specified by 5238 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5239 * one input event to the application at a time and waits for the application 5240 * to finish handling it before delivering the next one. 5241 * 5242 * However, because the application or IME can synthesize and inject multiple 5243 * key events at a time without going through the input dispatcher, we end up 5244 * needing a queue on the application's side. 5245 */ 5246 private static final class QueuedInputEvent { 5247 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5248 public static final int FLAG_DEFERRED = 1 << 1; 5249 public static final int FLAG_FINISHED = 1 << 2; 5250 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5251 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5252 5253 public QueuedInputEvent mNext; 5254 5255 public InputEvent mEvent; 5256 public InputEventReceiver mReceiver; 5257 public int mFlags; 5258 5259 public boolean shouldSkipIme() { 5260 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5261 return true; 5262 } 5263 return mEvent instanceof MotionEvent 5264 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5265 } 5266 } 5267 5268 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5269 InputEventReceiver receiver, int flags) { 5270 QueuedInputEvent q = mQueuedInputEventPool; 5271 if (q != null) { 5272 mQueuedInputEventPoolSize -= 1; 5273 mQueuedInputEventPool = q.mNext; 5274 q.mNext = null; 5275 } else { 5276 q = new QueuedInputEvent(); 5277 } 5278 5279 q.mEvent = event; 5280 q.mReceiver = receiver; 5281 q.mFlags = flags; 5282 return q; 5283 } 5284 5285 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5286 q.mEvent = null; 5287 q.mReceiver = null; 5288 5289 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5290 mQueuedInputEventPoolSize += 1; 5291 q.mNext = mQueuedInputEventPool; 5292 mQueuedInputEventPool = q; 5293 } 5294 } 5295 5296 void enqueueInputEvent(InputEvent event) { 5297 enqueueInputEvent(event, null, 0, false); 5298 } 5299 5300 void enqueueInputEvent(InputEvent event, 5301 InputEventReceiver receiver, int flags, boolean processImmediately) { 5302 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5303 5304 // Always enqueue the input event in order, regardless of its time stamp. 5305 // We do this because the application or the IME may inject key events 5306 // in response to touch events and we want to ensure that the injected keys 5307 // are processed in the order they were received and we cannot trust that 5308 // the time stamp of injected events are monotonic. 5309 QueuedInputEvent last = mPendingInputEventTail; 5310 if (last == null) { 5311 mPendingInputEventHead = q; 5312 mPendingInputEventTail = q; 5313 } else { 5314 last.mNext = q; 5315 mPendingInputEventTail = q; 5316 } 5317 mPendingInputEventCount += 1; 5318 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5319 mPendingInputEventCount); 5320 5321 if (processImmediately) { 5322 doProcessInputEvents(); 5323 } else { 5324 scheduleProcessInputEvents(); 5325 } 5326 } 5327 5328 private void scheduleProcessInputEvents() { 5329 if (!mProcessInputEventsScheduled) { 5330 mProcessInputEventsScheduled = true; 5331 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5332 msg.setAsynchronous(true); 5333 mHandler.sendMessage(msg); 5334 } 5335 } 5336 5337 void doProcessInputEvents() { 5338 // Deliver all pending input events in the queue. 5339 while (mPendingInputEventHead != null) { 5340 QueuedInputEvent q = mPendingInputEventHead; 5341 mPendingInputEventHead = q.mNext; 5342 if (mPendingInputEventHead == null) { 5343 mPendingInputEventTail = null; 5344 } 5345 q.mNext = null; 5346 5347 mPendingInputEventCount -= 1; 5348 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5349 mPendingInputEventCount); 5350 5351 deliverInputEvent(q); 5352 } 5353 5354 // We are done processing all input events that we can process right now 5355 // so we can clear the pending flag immediately. 5356 if (mProcessInputEventsScheduled) { 5357 mProcessInputEventsScheduled = false; 5358 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5359 } 5360 } 5361 5362 private void deliverInputEvent(QueuedInputEvent q) { 5363 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5364 try { 5365 if (mInputEventConsistencyVerifier != null) { 5366 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5367 } 5368 5369 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5370 if (stage != null) { 5371 stage.deliver(q); 5372 } else { 5373 finishInputEvent(q); 5374 } 5375 } finally { 5376 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5377 } 5378 } 5379 5380 private void finishInputEvent(QueuedInputEvent q) { 5381 if (q.mReceiver != null) { 5382 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5383 q.mReceiver.finishInputEvent(q.mEvent, handled); 5384 } else { 5385 q.mEvent.recycleIfNeededAfterDispatch(); 5386 } 5387 5388 recycleQueuedInputEvent(q); 5389 } 5390 5391 static boolean isTerminalInputEvent(InputEvent event) { 5392 if (event instanceof KeyEvent) { 5393 final KeyEvent keyEvent = (KeyEvent)event; 5394 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5395 } else { 5396 final MotionEvent motionEvent = (MotionEvent)event; 5397 final int action = motionEvent.getAction(); 5398 return action == MotionEvent.ACTION_UP 5399 || action == MotionEvent.ACTION_CANCEL 5400 || action == MotionEvent.ACTION_HOVER_EXIT; 5401 } 5402 } 5403 5404 void scheduleConsumeBatchedInput() { 5405 if (!mConsumeBatchedInputScheduled) { 5406 mConsumeBatchedInputScheduled = true; 5407 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5408 mConsumedBatchedInputRunnable, null); 5409 } 5410 } 5411 5412 void unscheduleConsumeBatchedInput() { 5413 if (mConsumeBatchedInputScheduled) { 5414 mConsumeBatchedInputScheduled = false; 5415 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5416 mConsumedBatchedInputRunnable, null); 5417 } 5418 } 5419 5420 void doConsumeBatchedInput(long frameTimeNanos) { 5421 if (mConsumeBatchedInputScheduled) { 5422 mConsumeBatchedInputScheduled = false; 5423 if (mInputEventReceiver != null) { 5424 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5425 } 5426 doProcessInputEvents(); 5427 } 5428 } 5429 5430 final class TraversalRunnable implements Runnable { 5431 @Override 5432 public void run() { 5433 doTraversal(); 5434 } 5435 } 5436 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5437 5438 final class WindowInputEventReceiver extends InputEventReceiver { 5439 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5440 super(inputChannel, looper); 5441 } 5442 5443 @Override 5444 public void onInputEvent(InputEvent event) { 5445 enqueueInputEvent(event, this, 0, true); 5446 } 5447 5448 @Override 5449 public void onBatchedInputEventPending() { 5450 scheduleConsumeBatchedInput(); 5451 } 5452 5453 @Override 5454 public void dispose() { 5455 unscheduleConsumeBatchedInput(); 5456 super.dispose(); 5457 } 5458 } 5459 WindowInputEventReceiver mInputEventReceiver; 5460 5461 final class ConsumeBatchedInputRunnable implements Runnable { 5462 @Override 5463 public void run() { 5464 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5465 } 5466 } 5467 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5468 new ConsumeBatchedInputRunnable(); 5469 boolean mConsumeBatchedInputScheduled; 5470 5471 final class InvalidateOnAnimationRunnable implements Runnable { 5472 private boolean mPosted; 5473 private ArrayList<View> mViews = new ArrayList<View>(); 5474 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5475 new ArrayList<AttachInfo.InvalidateInfo>(); 5476 private View[] mTempViews; 5477 private AttachInfo.InvalidateInfo[] mTempViewRects; 5478 5479 public void addView(View view) { 5480 synchronized (this) { 5481 mViews.add(view); 5482 postIfNeededLocked(); 5483 } 5484 } 5485 5486 public void addViewRect(AttachInfo.InvalidateInfo info) { 5487 synchronized (this) { 5488 mViewRects.add(info); 5489 postIfNeededLocked(); 5490 } 5491 } 5492 5493 public void removeView(View view) { 5494 synchronized (this) { 5495 mViews.remove(view); 5496 5497 for (int i = mViewRects.size(); i-- > 0; ) { 5498 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5499 if (info.target == view) { 5500 mViewRects.remove(i); 5501 info.recycle(); 5502 } 5503 } 5504 5505 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5506 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5507 mPosted = false; 5508 } 5509 } 5510 } 5511 5512 @Override 5513 public void run() { 5514 final int viewCount; 5515 final int viewRectCount; 5516 synchronized (this) { 5517 mPosted = false; 5518 5519 viewCount = mViews.size(); 5520 if (viewCount != 0) { 5521 mTempViews = mViews.toArray(mTempViews != null 5522 ? mTempViews : new View[viewCount]); 5523 mViews.clear(); 5524 } 5525 5526 viewRectCount = mViewRects.size(); 5527 if (viewRectCount != 0) { 5528 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5529 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5530 mViewRects.clear(); 5531 } 5532 } 5533 5534 for (int i = 0; i < viewCount; i++) { 5535 mTempViews[i].invalidate(); 5536 mTempViews[i] = null; 5537 } 5538 5539 for (int i = 0; i < viewRectCount; i++) { 5540 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5541 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5542 info.recycle(); 5543 } 5544 } 5545 5546 private void postIfNeededLocked() { 5547 if (!mPosted) { 5548 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5549 mPosted = true; 5550 } 5551 } 5552 } 5553 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5554 new InvalidateOnAnimationRunnable(); 5555 5556 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5557 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5558 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5559 } 5560 5561 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5562 long delayMilliseconds) { 5563 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5564 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5565 } 5566 5567 public void dispatchInvalidateOnAnimation(View view) { 5568 mInvalidateOnAnimationRunnable.addView(view); 5569 } 5570 5571 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5572 mInvalidateOnAnimationRunnable.addViewRect(info); 5573 } 5574 5575 public void enqueueDisplayList(DisplayList displayList) { 5576 mDisplayLists.add(displayList); 5577 } 5578 5579 public void cancelInvalidate(View view) { 5580 mHandler.removeMessages(MSG_INVALIDATE, view); 5581 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5582 // them to the pool 5583 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5584 mInvalidateOnAnimationRunnable.removeView(view); 5585 } 5586 5587 public void dispatchKey(KeyEvent event) { 5588 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 5589 msg.setAsynchronous(true); 5590 mHandler.sendMessage(msg); 5591 } 5592 5593 public void dispatchKeyFromIme(KeyEvent event) { 5594 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5595 msg.setAsynchronous(true); 5596 mHandler.sendMessage(msg); 5597 } 5598 5599 public void dispatchUnhandledKey(KeyEvent event) { 5600 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5601 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5602 final int keyCode = event.getKeyCode(); 5603 final int metaState = event.getMetaState(); 5604 5605 // Check for fallback actions specified by the key character map. 5606 KeyCharacterMap.FallbackAction fallbackAction = 5607 kcm.getFallbackAction(keyCode, metaState); 5608 if (fallbackAction != null) { 5609 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5610 KeyEvent fallbackEvent = KeyEvent.obtain( 5611 event.getDownTime(), event.getEventTime(), 5612 event.getAction(), fallbackAction.keyCode, 5613 event.getRepeatCount(), fallbackAction.metaState, 5614 event.getDeviceId(), event.getScanCode(), 5615 flags, event.getSource(), null); 5616 fallbackAction.recycle(); 5617 5618 dispatchKey(fallbackEvent); 5619 } 5620 } 5621 } 5622 5623 public void dispatchAppVisibility(boolean visible) { 5624 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5625 msg.arg1 = visible ? 1 : 0; 5626 mHandler.sendMessage(msg); 5627 } 5628 5629 public void dispatchScreenStateChange(boolean on) { 5630 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5631 msg.arg1 = on ? 1 : 0; 5632 mHandler.sendMessage(msg); 5633 } 5634 5635 public void dispatchGetNewSurface() { 5636 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5637 mHandler.sendMessage(msg); 5638 } 5639 5640 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5641 Message msg = Message.obtain(); 5642 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5643 msg.arg1 = hasFocus ? 1 : 0; 5644 msg.arg2 = inTouchMode ? 1 : 0; 5645 mHandler.sendMessage(msg); 5646 } 5647 5648 public void dispatchCloseSystemDialogs(String reason) { 5649 Message msg = Message.obtain(); 5650 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5651 msg.obj = reason; 5652 mHandler.sendMessage(msg); 5653 } 5654 5655 public void dispatchDragEvent(DragEvent event) { 5656 final int what; 5657 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5658 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5659 mHandler.removeMessages(what); 5660 } else { 5661 what = MSG_DISPATCH_DRAG_EVENT; 5662 } 5663 Message msg = mHandler.obtainMessage(what, event); 5664 mHandler.sendMessage(msg); 5665 } 5666 5667 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5668 int localValue, int localChanges) { 5669 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5670 args.seq = seq; 5671 args.globalVisibility = globalVisibility; 5672 args.localValue = localValue; 5673 args.localChanges = localChanges; 5674 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5675 } 5676 5677 public void dispatchDoneAnimating() { 5678 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5679 } 5680 5681 public void dispatchCheckFocus() { 5682 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5683 // This will result in a call to checkFocus() below. 5684 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5685 } 5686 } 5687 5688 /** 5689 * Post a callback to send a 5690 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5691 * This event is send at most once every 5692 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5693 */ 5694 private void postSendWindowContentChangedCallback(View source) { 5695 if (mSendWindowContentChangedAccessibilityEvent == null) { 5696 mSendWindowContentChangedAccessibilityEvent = 5697 new SendWindowContentChangedAccessibilityEvent(); 5698 } 5699 View oldSource = mSendWindowContentChangedAccessibilityEvent.mSource; 5700 if (oldSource == null) { 5701 mSendWindowContentChangedAccessibilityEvent.mSource = source; 5702 mHandler.postDelayed(mSendWindowContentChangedAccessibilityEvent, 5703 ViewConfiguration.getSendRecurringAccessibilityEventsInterval()); 5704 } else { 5705 mSendWindowContentChangedAccessibilityEvent.mSource = 5706 getCommonPredecessor(oldSource, source); 5707 } 5708 } 5709 5710 /** 5711 * Remove a posted callback to send a 5712 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5713 */ 5714 private void removeSendWindowContentChangedCallback() { 5715 if (mSendWindowContentChangedAccessibilityEvent != null) { 5716 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5717 } 5718 } 5719 5720 public boolean showContextMenuForChild(View originalView) { 5721 return false; 5722 } 5723 5724 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5725 return null; 5726 } 5727 5728 public void createContextMenu(ContextMenu menu) { 5729 } 5730 5731 public void childDrawableStateChanged(View child) { 5732 } 5733 5734 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5735 if (mView == null) { 5736 return false; 5737 } 5738 // Intercept accessibility focus events fired by virtual nodes to keep 5739 // track of accessibility focus position in such nodes. 5740 final int eventType = event.getEventType(); 5741 switch (eventType) { 5742 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5743 final long sourceNodeId = event.getSourceNodeId(); 5744 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5745 sourceNodeId); 5746 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5747 if (source != null) { 5748 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5749 if (provider != null) { 5750 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5751 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5752 setAccessibilityFocus(source, node); 5753 } 5754 } 5755 } break; 5756 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5757 final long sourceNodeId = event.getSourceNodeId(); 5758 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5759 sourceNodeId); 5760 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5761 if (source != null) { 5762 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5763 if (provider != null) { 5764 setAccessibilityFocus(null, null); 5765 } 5766 } 5767 } break; 5768 } 5769 mAccessibilityManager.sendAccessibilityEvent(event); 5770 return true; 5771 } 5772 5773 @Override 5774 public void childAccessibilityStateChanged(View child) { 5775 postSendWindowContentChangedCallback(child); 5776 } 5777 5778 @Override 5779 public boolean canResolveLayoutDirection() { 5780 return true; 5781 } 5782 5783 @Override 5784 public boolean isLayoutDirectionResolved() { 5785 return true; 5786 } 5787 5788 @Override 5789 public int getLayoutDirection() { 5790 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5791 } 5792 5793 @Override 5794 public boolean canResolveTextDirection() { 5795 return true; 5796 } 5797 5798 @Override 5799 public boolean isTextDirectionResolved() { 5800 return true; 5801 } 5802 5803 @Override 5804 public int getTextDirection() { 5805 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5806 } 5807 5808 @Override 5809 public boolean canResolveTextAlignment() { 5810 return true; 5811 } 5812 5813 @Override 5814 public boolean isTextAlignmentResolved() { 5815 return true; 5816 } 5817 5818 @Override 5819 public int getTextAlignment() { 5820 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5821 } 5822 5823 private View getCommonPredecessor(View first, View second) { 5824 if (mAttachInfo != null) { 5825 if (mTempHashSet == null) { 5826 mTempHashSet = new HashSet<View>(); 5827 } 5828 HashSet<View> seen = mTempHashSet; 5829 seen.clear(); 5830 View firstCurrent = first; 5831 while (firstCurrent != null) { 5832 seen.add(firstCurrent); 5833 ViewParent firstCurrentParent = firstCurrent.mParent; 5834 if (firstCurrentParent instanceof View) { 5835 firstCurrent = (View) firstCurrentParent; 5836 } else { 5837 firstCurrent = null; 5838 } 5839 } 5840 View secondCurrent = second; 5841 while (secondCurrent != null) { 5842 if (seen.contains(secondCurrent)) { 5843 seen.clear(); 5844 return secondCurrent; 5845 } 5846 ViewParent secondCurrentParent = secondCurrent.mParent; 5847 if (secondCurrentParent instanceof View) { 5848 secondCurrent = (View) secondCurrentParent; 5849 } else { 5850 secondCurrent = null; 5851 } 5852 } 5853 seen.clear(); 5854 } 5855 return null; 5856 } 5857 5858 void checkThread() { 5859 if (mThread != Thread.currentThread()) { 5860 throw new CalledFromWrongThreadException( 5861 "Only the original thread that created a view hierarchy can touch its views."); 5862 } 5863 } 5864 5865 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 5866 // ViewAncestor never intercepts touch event, so this can be a no-op 5867 } 5868 5869 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 5870 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 5871 if (rectangle != null) { 5872 mTempRect.set(rectangle); 5873 mTempRect.offset(0, -mCurScrollY); 5874 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 5875 try { 5876 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 5877 } catch (RemoteException re) { 5878 /* ignore */ 5879 } 5880 } 5881 return scrolled; 5882 } 5883 5884 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 5885 // Do nothing. 5886 } 5887 5888 class TakenSurfaceHolder extends BaseSurfaceHolder { 5889 @Override 5890 public boolean onAllowLockCanvas() { 5891 return mDrawingAllowed; 5892 } 5893 5894 @Override 5895 public void onRelayoutContainer() { 5896 // Not currently interesting -- from changing between fixed and layout size. 5897 } 5898 5899 public void setFormat(int format) { 5900 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 5901 } 5902 5903 public void setType(int type) { 5904 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 5905 } 5906 5907 @Override 5908 public void onUpdateSurface() { 5909 // We take care of format and type changes on our own. 5910 throw new IllegalStateException("Shouldn't be here"); 5911 } 5912 5913 public boolean isCreating() { 5914 return mIsCreating; 5915 } 5916 5917 @Override 5918 public void setFixedSize(int width, int height) { 5919 throw new UnsupportedOperationException( 5920 "Currently only support sizing from layout"); 5921 } 5922 5923 public void setKeepScreenOn(boolean screenOn) { 5924 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 5925 } 5926 } 5927 5928 static class W extends IWindow.Stub { 5929 private final WeakReference<ViewRootImpl> mViewAncestor; 5930 private final IWindowSession mWindowSession; 5931 5932 W(ViewRootImpl viewAncestor) { 5933 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 5934 mWindowSession = viewAncestor.mWindowSession; 5935 } 5936 5937 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 5938 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5939 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5940 if (viewAncestor != null) { 5941 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 5942 visibleInsets, reportDraw, newConfig); 5943 } 5944 } 5945 5946 @Override 5947 public void moved(int newX, int newY) { 5948 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5949 if (viewAncestor != null) { 5950 viewAncestor.dispatchMoved(newX, newY); 5951 } 5952 } 5953 5954 public void dispatchAppVisibility(boolean visible) { 5955 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5956 if (viewAncestor != null) { 5957 viewAncestor.dispatchAppVisibility(visible); 5958 } 5959 } 5960 5961 public void dispatchScreenState(boolean on) { 5962 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5963 if (viewAncestor != null) { 5964 viewAncestor.dispatchScreenStateChange(on); 5965 } 5966 } 5967 5968 public void dispatchGetNewSurface() { 5969 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5970 if (viewAncestor != null) { 5971 viewAncestor.dispatchGetNewSurface(); 5972 } 5973 } 5974 5975 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5976 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5977 if (viewAncestor != null) { 5978 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 5979 } 5980 } 5981 5982 private static int checkCallingPermission(String permission) { 5983 try { 5984 return ActivityManagerNative.getDefault().checkPermission( 5985 permission, Binder.getCallingPid(), Binder.getCallingUid()); 5986 } catch (RemoteException e) { 5987 return PackageManager.PERMISSION_DENIED; 5988 } 5989 } 5990 5991 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 5992 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5993 if (viewAncestor != null) { 5994 final View view = viewAncestor.mView; 5995 if (view != null) { 5996 if (checkCallingPermission(Manifest.permission.DUMP) != 5997 PackageManager.PERMISSION_GRANTED) { 5998 throw new SecurityException("Insufficient permissions to invoke" 5999 + " executeCommand() from pid=" + Binder.getCallingPid() 6000 + ", uid=" + Binder.getCallingUid()); 6001 } 6002 6003 OutputStream clientStream = null; 6004 try { 6005 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6006 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6007 } catch (IOException e) { 6008 e.printStackTrace(); 6009 } finally { 6010 if (clientStream != null) { 6011 try { 6012 clientStream.close(); 6013 } catch (IOException e) { 6014 e.printStackTrace(); 6015 } 6016 } 6017 } 6018 } 6019 } 6020 } 6021 6022 public void closeSystemDialogs(String reason) { 6023 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6024 if (viewAncestor != null) { 6025 viewAncestor.dispatchCloseSystemDialogs(reason); 6026 } 6027 } 6028 6029 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6030 boolean sync) { 6031 if (sync) { 6032 try { 6033 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6034 } catch (RemoteException e) { 6035 } 6036 } 6037 } 6038 6039 public void dispatchWallpaperCommand(String action, int x, int y, 6040 int z, Bundle extras, boolean sync) { 6041 if (sync) { 6042 try { 6043 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6044 } catch (RemoteException e) { 6045 } 6046 } 6047 } 6048 6049 /* Drag/drop */ 6050 public void dispatchDragEvent(DragEvent event) { 6051 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6052 if (viewAncestor != null) { 6053 viewAncestor.dispatchDragEvent(event); 6054 } 6055 } 6056 6057 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6058 int localValue, int localChanges) { 6059 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6060 if (viewAncestor != null) { 6061 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6062 localValue, localChanges); 6063 } 6064 } 6065 6066 public void doneAnimating() { 6067 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6068 if (viewAncestor != null) { 6069 viewAncestor.dispatchDoneAnimating(); 6070 } 6071 } 6072 } 6073 6074 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6075 public CalledFromWrongThreadException(String msg) { 6076 super(msg); 6077 } 6078 } 6079 6080 private SurfaceHolder mHolder = new SurfaceHolder() { 6081 // we only need a SurfaceHolder for opengl. it would be nice 6082 // to implement everything else though, especially the callback 6083 // support (opengl doesn't make use of it right now, but eventually 6084 // will). 6085 public Surface getSurface() { 6086 return mSurface; 6087 } 6088 6089 public boolean isCreating() { 6090 return false; 6091 } 6092 6093 public void addCallback(Callback callback) { 6094 } 6095 6096 public void removeCallback(Callback callback) { 6097 } 6098 6099 public void setFixedSize(int width, int height) { 6100 } 6101 6102 public void setSizeFromLayout() { 6103 } 6104 6105 public void setFormat(int format) { 6106 } 6107 6108 public void setType(int type) { 6109 } 6110 6111 public void setKeepScreenOn(boolean screenOn) { 6112 } 6113 6114 public Canvas lockCanvas() { 6115 return null; 6116 } 6117 6118 public Canvas lockCanvas(Rect dirty) { 6119 return null; 6120 } 6121 6122 public void unlockCanvasAndPost(Canvas canvas) { 6123 } 6124 public Rect getSurfaceFrame() { 6125 return null; 6126 } 6127 }; 6128 6129 static RunQueue getRunQueue() { 6130 RunQueue rq = sRunQueues.get(); 6131 if (rq != null) { 6132 return rq; 6133 } 6134 rq = new RunQueue(); 6135 sRunQueues.set(rq); 6136 return rq; 6137 } 6138 6139 /** 6140 * The run queue is used to enqueue pending work from Views when no Handler is 6141 * attached. The work is executed during the next call to performTraversals on 6142 * the thread. 6143 * @hide 6144 */ 6145 static final class RunQueue { 6146 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6147 6148 void post(Runnable action) { 6149 postDelayed(action, 0); 6150 } 6151 6152 void postDelayed(Runnable action, long delayMillis) { 6153 HandlerAction handlerAction = new HandlerAction(); 6154 handlerAction.action = action; 6155 handlerAction.delay = delayMillis; 6156 6157 synchronized (mActions) { 6158 mActions.add(handlerAction); 6159 } 6160 } 6161 6162 void removeCallbacks(Runnable action) { 6163 final HandlerAction handlerAction = new HandlerAction(); 6164 handlerAction.action = action; 6165 6166 synchronized (mActions) { 6167 final ArrayList<HandlerAction> actions = mActions; 6168 6169 while (actions.remove(handlerAction)) { 6170 // Keep going 6171 } 6172 } 6173 } 6174 6175 void executeActions(Handler handler) { 6176 synchronized (mActions) { 6177 final ArrayList<HandlerAction> actions = mActions; 6178 final int count = actions.size(); 6179 6180 for (int i = 0; i < count; i++) { 6181 final HandlerAction handlerAction = actions.get(i); 6182 handler.postDelayed(handlerAction.action, handlerAction.delay); 6183 } 6184 6185 actions.clear(); 6186 } 6187 } 6188 6189 private static class HandlerAction { 6190 Runnable action; 6191 long delay; 6192 6193 @Override 6194 public boolean equals(Object o) { 6195 if (this == o) return true; 6196 if (o == null || getClass() != o.getClass()) return false; 6197 6198 HandlerAction that = (HandlerAction) o; 6199 return !(action != null ? !action.equals(that.action) : that.action != null); 6200 6201 } 6202 6203 @Override 6204 public int hashCode() { 6205 int result = action != null ? action.hashCode() : 0; 6206 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6207 return result; 6208 } 6209 } 6210 } 6211 6212 /** 6213 * Class for managing the accessibility interaction connection 6214 * based on the global accessibility state. 6215 */ 6216 final class AccessibilityInteractionConnectionManager 6217 implements AccessibilityStateChangeListener { 6218 public void onAccessibilityStateChanged(boolean enabled) { 6219 if (enabled) { 6220 ensureConnection(); 6221 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6222 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6223 View focusedView = mView.findFocus(); 6224 if (focusedView != null && focusedView != mView) { 6225 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6226 } 6227 } 6228 } else { 6229 ensureNoConnection(); 6230 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6231 } 6232 } 6233 6234 public void ensureConnection() { 6235 if (mAttachInfo != null) { 6236 final boolean registered = 6237 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6238 if (!registered) { 6239 mAttachInfo.mAccessibilityWindowId = 6240 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6241 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6242 } 6243 } 6244 } 6245 6246 public void ensureNoConnection() { 6247 final boolean registered = 6248 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6249 if (registered) { 6250 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6251 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6252 } 6253 } 6254 } 6255 6256 /** 6257 * This class is an interface this ViewAncestor provides to the 6258 * AccessibilityManagerService to the latter can interact with 6259 * the view hierarchy in this ViewAncestor. 6260 */ 6261 static final class AccessibilityInteractionConnection 6262 extends IAccessibilityInteractionConnection.Stub { 6263 private final WeakReference<ViewRootImpl> mViewRootImpl; 6264 6265 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6266 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6267 } 6268 6269 @Override 6270 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6271 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6272 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6273 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6274 if (viewRootImpl != null && viewRootImpl.mView != null) { 6275 viewRootImpl.getAccessibilityInteractionController() 6276 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6277 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6278 spec); 6279 } else { 6280 // We cannot make the call and notify the caller so it does not wait. 6281 try { 6282 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6283 } catch (RemoteException re) { 6284 /* best effort - ignore */ 6285 } 6286 } 6287 } 6288 6289 @Override 6290 public void performAccessibilityAction(long accessibilityNodeId, int action, 6291 Bundle arguments, int interactionId, 6292 IAccessibilityInteractionConnectionCallback callback, int flags, 6293 int interogatingPid, long interrogatingTid) { 6294 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6295 if (viewRootImpl != null && viewRootImpl.mView != null) { 6296 viewRootImpl.getAccessibilityInteractionController() 6297 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6298 interactionId, callback, flags, interogatingPid, interrogatingTid); 6299 } else { 6300 // We cannot make the call and notify the caller so it does not wait. 6301 try { 6302 callback.setPerformAccessibilityActionResult(false, interactionId); 6303 } catch (RemoteException re) { 6304 /* best effort - ignore */ 6305 } 6306 } 6307 } 6308 6309 @Override 6310 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6311 String viewId, int interactionId, 6312 IAccessibilityInteractionConnectionCallback callback, int flags, 6313 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6314 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6315 if (viewRootImpl != null && viewRootImpl.mView != null) { 6316 viewRootImpl.getAccessibilityInteractionController() 6317 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6318 viewId, interactionId, callback, flags, interrogatingPid, 6319 interrogatingTid, spec); 6320 } else { 6321 // We cannot make the call and notify the caller so it does not wait. 6322 try { 6323 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6324 } catch (RemoteException re) { 6325 /* best effort - ignore */ 6326 } 6327 } 6328 } 6329 6330 @Override 6331 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6332 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6333 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6334 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6335 if (viewRootImpl != null && viewRootImpl.mView != null) { 6336 viewRootImpl.getAccessibilityInteractionController() 6337 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6338 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6339 spec); 6340 } else { 6341 // We cannot make the call and notify the caller so it does not wait. 6342 try { 6343 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6344 } catch (RemoteException re) { 6345 /* best effort - ignore */ 6346 } 6347 } 6348 } 6349 6350 @Override 6351 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6352 IAccessibilityInteractionConnectionCallback callback, int flags, 6353 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6354 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6355 if (viewRootImpl != null && viewRootImpl.mView != null) { 6356 viewRootImpl.getAccessibilityInteractionController() 6357 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6358 flags, interrogatingPid, interrogatingTid, spec); 6359 } else { 6360 // We cannot make the call and notify the caller so it does not wait. 6361 try { 6362 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6363 } catch (RemoteException re) { 6364 /* best effort - ignore */ 6365 } 6366 } 6367 } 6368 6369 @Override 6370 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6371 IAccessibilityInteractionConnectionCallback callback, int flags, 6372 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6373 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6374 if (viewRootImpl != null && viewRootImpl.mView != null) { 6375 viewRootImpl.getAccessibilityInteractionController() 6376 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6377 callback, flags, interrogatingPid, interrogatingTid, spec); 6378 } else { 6379 // We cannot make the call and notify the caller so it does not wait. 6380 try { 6381 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6382 } catch (RemoteException re) { 6383 /* best effort - ignore */ 6384 } 6385 } 6386 } 6387 } 6388 6389 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6390 public View mSource; 6391 6392 public void run() { 6393 if (mSource != null) { 6394 mSource.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6395 mSource.resetAccessibilityStateChanged(); 6396 mSource = null; 6397 } 6398 } 6399 } 6400} 6401