ViewRootImpl.java revision f66645671f9c3d8e621296e11fd65941c22f057f
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 = "viewroot.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 mDrawDuringWindowsAnimating; 209 boolean mIsDrawing; 210 int mLastSystemUiVisibility; 211 int mClientWindowLayoutFlags; 212 boolean mLastOverscanRequested; 213 214 // Pool of queued input events. 215 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 216 private QueuedInputEvent mQueuedInputEventPool; 217 private int mQueuedInputEventPoolSize; 218 219 /* Input event queue. 220 * Pending input events are input events waiting to be delivered to the input stages 221 * and handled by the application. 222 */ 223 QueuedInputEvent mPendingInputEventHead; 224 QueuedInputEvent mPendingInputEventTail; 225 int mPendingInputEventCount; 226 boolean mProcessInputEventsScheduled; 227 String mPendingInputEventQueueLengthCounterName = "pq"; 228 229 InputStage mFirstInputStage; 230 InputStage mFirstPostImeInputStage; 231 SyntheticInputStage mSyntheticInputStage; 232 233 boolean mWindowAttributesChanged = false; 234 int mWindowAttributesChangesFlag = 0; 235 236 // These can be accessed by any thread, must be protected with a lock. 237 // Surface can never be reassigned or cleared (use Surface.clear()). 238 private final Surface mSurface = new Surface(); 239 240 boolean mAdded; 241 boolean mAddedTouchMode; 242 243 final DisplayAdjustments mDisplayAdjustments; 244 245 // These are accessed by multiple threads. 246 final Rect mWinFrame; // frame given by window manager. 247 248 final Rect mPendingOverscanInsets = new Rect(); 249 final Rect mPendingVisibleInsets = new Rect(); 250 final Rect mPendingContentInsets = new Rect(); 251 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 252 = new ViewTreeObserver.InternalInsetsInfo(); 253 254 final Rect mFitSystemWindowsInsets = new Rect(); 255 256 final Configuration mLastConfiguration = new Configuration(); 257 final Configuration mPendingConfiguration = new Configuration(); 258 259 boolean mScrollMayChange; 260 int mSoftInputMode; 261 WeakReference<View> mLastScrolledFocus; 262 int mScrollY; 263 int mCurScrollY; 264 Scroller mScroller; 265 HardwareLayer mResizeBuffer; 266 long mResizeBufferStartTime; 267 int mResizeBufferDuration; 268 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 269 private ArrayList<LayoutTransition> mPendingTransitions; 270 271 final ViewConfiguration mViewConfiguration; 272 273 /* Drag/drop */ 274 ClipDescription mDragDescription; 275 View mCurrentDragView; 276 volatile Object mLocalDragState; 277 final PointF mDragPoint = new PointF(); 278 final PointF mLastTouchPoint = new PointF(); 279 280 private boolean mProfileRendering; 281 private Choreographer.FrameCallback mRenderProfiler; 282 private boolean mRenderProfilingEnabled; 283 284 private boolean mMediaDisabled; 285 286 // Variables to track frames per second, enabled via DEBUG_FPS flag 287 private long mFpsStartTime = -1; 288 private long mFpsPrevTime = -1; 289 private int mFpsNumFrames; 290 291 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 292 293 /** 294 * see {@link #playSoundEffect(int)} 295 */ 296 AudioManager mAudioManager; 297 298 final AccessibilityManager mAccessibilityManager; 299 300 AccessibilityInteractionController mAccessibilityInteractionController; 301 302 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 303 304 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 305 306 HashSet<View> mTempHashSet; 307 308 private final int mDensity; 309 private final int mNoncompatDensity; 310 311 private boolean mInLayout = false; 312 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 313 boolean mHandlingLayoutInLayoutRequest = false; 314 315 private int mViewLayoutDirectionInitial; 316 317 /** Set to true once doDie() has been called. */ 318 private boolean mRemoved; 319 320 /** 321 * Consistency verifier for debugging purposes. 322 */ 323 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 324 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 325 new InputEventConsistencyVerifier(this, 0) : null; 326 327 static final class SystemUiVisibilityInfo { 328 int seq; 329 int globalVisibility; 330 int localValue; 331 int localChanges; 332 } 333 334 public ViewRootImpl(Context context, Display display) { 335 mContext = context; 336 mWindowSession = WindowManagerGlobal.getWindowSession(); 337 mDisplay = display; 338 mBasePackageName = context.getBasePackageName(); 339 340 mDisplayAdjustments = display.getDisplayAdjustments(); 341 342 mThread = Thread.currentThread(); 343 mLocation = new WindowLeaked(null); 344 mLocation.fillInStackTrace(); 345 mWidth = -1; 346 mHeight = -1; 347 mDirty = new Rect(); 348 mTempRect = new Rect(); 349 mVisRect = new Rect(); 350 mWinFrame = new Rect(); 351 mWindow = new W(this); 352 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 353 mViewVisibility = View.GONE; 354 mTransparentRegion = new Region(); 355 mPreviousTransparentRegion = new Region(); 356 mFirst = true; // true for the first time the view is added 357 mAdded = false; 358 mAccessibilityManager = AccessibilityManager.getInstance(context); 359 mAccessibilityInteractionConnectionManager = 360 new AccessibilityInteractionConnectionManager(); 361 mAccessibilityManager.addAccessibilityStateChangeListener( 362 mAccessibilityInteractionConnectionManager); 363 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 364 mViewConfiguration = ViewConfiguration.get(context); 365 mDensity = context.getResources().getDisplayMetrics().densityDpi; 366 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 367 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 368 mChoreographer = Choreographer.getInstance(); 369 370 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 371 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 372 loadSystemProperties(); 373 } 374 375 public static void addFirstDrawHandler(Runnable callback) { 376 synchronized (sFirstDrawHandlers) { 377 if (!sFirstDrawComplete) { 378 sFirstDrawHandlers.add(callback); 379 } 380 } 381 } 382 383 public static void addConfigCallback(ComponentCallbacks callback) { 384 synchronized (sConfigCallbacks) { 385 sConfigCallbacks.add(callback); 386 } 387 } 388 389 // FIXME for perf testing only 390 private boolean mProfile = false; 391 392 /** 393 * Call this to profile the next traversal call. 394 * FIXME for perf testing only. Remove eventually 395 */ 396 public void profile() { 397 mProfile = true; 398 } 399 400 /** 401 * Indicates whether we are in touch mode. Calling this method triggers an IPC 402 * call and should be avoided whenever possible. 403 * 404 * @return True, if the device is in touch mode, false otherwise. 405 * 406 * @hide 407 */ 408 static boolean isInTouchMode() { 409 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 410 if (windowSession != null) { 411 try { 412 return windowSession.getInTouchMode(); 413 } catch (RemoteException e) { 414 } 415 } 416 return false; 417 } 418 419 /** 420 * We have one child 421 */ 422 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 423 synchronized (this) { 424 if (mView == null) { 425 mView = view; 426 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 427 mFallbackEventHandler.setView(view); 428 mWindowAttributes.copyFrom(attrs); 429 if (mWindowAttributes.packageName == null) { 430 mWindowAttributes.packageName = mBasePackageName; 431 } 432 attrs = mWindowAttributes; 433 // Keep track of the actual window flags supplied by the client. 434 mClientWindowLayoutFlags = attrs.flags; 435 436 setAccessibilityFocus(null, null); 437 438 if (view instanceof RootViewSurfaceTaker) { 439 mSurfaceHolderCallback = 440 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 441 if (mSurfaceHolderCallback != null) { 442 mSurfaceHolder = new TakenSurfaceHolder(); 443 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 444 } 445 } 446 447 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 448 mTranslator = compatibilityInfo.getTranslator(); 449 mDisplayAdjustments.setActivityToken(attrs.token); 450 451 // If the application owns the surface, don't enable hardware acceleration 452 if (mSurfaceHolder == null) { 453 enableHardwareAcceleration(attrs); 454 } 455 456 boolean restore = false; 457 if (mTranslator != null) { 458 mSurface.setCompatibilityTranslator(mTranslator); 459 restore = true; 460 attrs.backup(); 461 mTranslator.translateWindowLayout(attrs); 462 } 463 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 464 465 if (!compatibilityInfo.supportsScreen()) { 466 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 467 mLastInCompatMode = true; 468 } 469 470 mSoftInputMode = attrs.softInputMode; 471 mWindowAttributesChanged = true; 472 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 473 mAttachInfo.mRootView = view; 474 mAttachInfo.mScalingRequired = mTranslator != null; 475 mAttachInfo.mApplicationScale = 476 mTranslator == null ? 1.0f : mTranslator.applicationScale; 477 if (panelParentView != null) { 478 mAttachInfo.mPanelParentWindowToken 479 = panelParentView.getApplicationWindowToken(); 480 } 481 mAdded = true; 482 int res; /* = WindowManagerImpl.ADD_OKAY; */ 483 484 // Schedule the first layout -before- adding to the window 485 // manager, to make sure we do the relayout before receiving 486 // any other events from the system. 487 requestLayout(); 488 if ((mWindowAttributes.inputFeatures 489 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 490 mInputChannel = new InputChannel(); 491 } 492 try { 493 mOrigWindowType = mWindowAttributes.type; 494 mAttachInfo.mRecomputeGlobalAttributes = true; 495 collectViewAttributes(); 496 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 497 getHostVisibility(), mDisplay.getDisplayId(), 498 mAttachInfo.mContentInsets, mInputChannel); 499 } catch (RemoteException e) { 500 mAdded = false; 501 mView = null; 502 mAttachInfo.mRootView = null; 503 mInputChannel = null; 504 mFallbackEventHandler.setView(null); 505 unscheduleTraversals(); 506 setAccessibilityFocus(null, null); 507 throw new RuntimeException("Adding window failed", e); 508 } finally { 509 if (restore) { 510 attrs.restore(); 511 } 512 } 513 514 if (mTranslator != null) { 515 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 516 } 517 mPendingOverscanInsets.set(0, 0, 0, 0); 518 mPendingContentInsets.set(mAttachInfo.mContentInsets); 519 mPendingVisibleInsets.set(0, 0, 0, 0); 520 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 521 if (res < WindowManagerGlobal.ADD_OKAY) { 522 mAttachInfo.mRootView = null; 523 mAdded = false; 524 mFallbackEventHandler.setView(null); 525 unscheduleTraversals(); 526 setAccessibilityFocus(null, null); 527 switch (res) { 528 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 529 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 530 throw new WindowManager.BadTokenException( 531 "Unable to add window -- token " + attrs.token 532 + " is not valid; is your activity running?"); 533 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 534 throw new WindowManager.BadTokenException( 535 "Unable to add window -- token " + attrs.token 536 + " is not for an application"); 537 case WindowManagerGlobal.ADD_APP_EXITING: 538 throw new WindowManager.BadTokenException( 539 "Unable to add window -- app for token " + attrs.token 540 + " is exiting"); 541 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 542 throw new WindowManager.BadTokenException( 543 "Unable to add window -- window " + mWindow 544 + " has already been added"); 545 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 546 // Silently ignore -- we would have just removed it 547 // right away, anyway. 548 return; 549 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 550 throw new WindowManager.BadTokenException( 551 "Unable to add window " + mWindow + 552 " -- another window of this type already exists"); 553 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 554 throw new WindowManager.BadTokenException( 555 "Unable to add window " + mWindow + 556 " -- permission denied for this window type"); 557 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 558 throw new WindowManager.InvalidDisplayException( 559 "Unable to add window " + mWindow + 560 " -- the specified display can not be found"); 561 } 562 throw new RuntimeException( 563 "Unable to add window -- unknown error code " + res); 564 } 565 566 if (view instanceof RootViewSurfaceTaker) { 567 mInputQueueCallback = 568 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 569 } 570 if (mInputChannel != null) { 571 if (mInputQueueCallback != null) { 572 mInputQueue = new InputQueue(); 573 mInputQueueCallback.onInputQueueCreated(mInputQueue); 574 } 575 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 576 Looper.myLooper()); 577 } 578 579 view.assignParent(this); 580 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 581 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 582 583 if (mAccessibilityManager.isEnabled()) { 584 mAccessibilityInteractionConnectionManager.ensureConnection(); 585 } 586 587 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 588 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 589 } 590 591 // Set up the input pipeline. 592 CharSequence counterSuffix = attrs.getTitle(); 593 mSyntheticInputStage = new SyntheticInputStage(); 594 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 595 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 596 "aq:native-post-ime:" + counterSuffix); 597 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 598 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 599 "aq:ime:" + counterSuffix); 600 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 601 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 602 "aq:native-pre-ime:" + counterSuffix); 603 604 mFirstInputStage = nativePreImeStage; 605 mFirstPostImeInputStage = earlyPostImeStage; 606 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 607 } 608 } 609 } 610 611 /** Whether the window is in local focus mode or not */ 612 private boolean isInLocalFocusMode() { 613 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 614 } 615 616 void destroyHardwareResources() { 617 invalidateDisplayLists(); 618 if (mAttachInfo.mHardwareRenderer != null) { 619 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 620 mAttachInfo.mHardwareRenderer.destroy(false); 621 } 622 } 623 624 void destroyHardwareLayers() { 625 if (mThread != Thread.currentThread()) { 626 if (mAttachInfo.mHardwareRenderer != null && 627 mAttachInfo.mHardwareRenderer.isEnabled()) { 628 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 629 } 630 } else { 631 invalidateDisplayLists(); 632 if (mAttachInfo.mHardwareRenderer != null && 633 mAttachInfo.mHardwareRenderer.isEnabled()) { 634 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 635 } 636 } 637 } 638 639 void pushHardwareLayerUpdate(HardwareLayer layer) { 640 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 641 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 642 } 643 } 644 645 void flushHardwareLayerUpdates() { 646 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled() && 647 mAttachInfo.mHardwareRenderer.validate()) { 648 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 649 } 650 } 651 652 void dispatchFlushHardwareLayerUpdates() { 653 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 654 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 655 } 656 657 public boolean attachFunctor(int functor) { 658 //noinspection SimplifiableIfStatement 659 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 660 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 661 } 662 return false; 663 } 664 665 public void detachFunctor(int functor) { 666 if (mAttachInfo.mHardwareRenderer != null) { 667 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 668 } 669 } 670 671 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 672 mAttachInfo.mHardwareAccelerated = false; 673 mAttachInfo.mHardwareAccelerationRequested = false; 674 675 // Don't enable hardware acceleration when the application is in compatibility mode 676 if (mTranslator != null) return; 677 678 // Try to enable hardware acceleration if requested 679 final boolean hardwareAccelerated = 680 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 681 682 if (hardwareAccelerated) { 683 if (!HardwareRenderer.isAvailable()) { 684 return; 685 } 686 687 // Persistent processes (including the system) should not do 688 // accelerated rendering on low-end devices. In that case, 689 // sRendererDisabled will be set. In addition, the system process 690 // itself should never do accelerated rendering. In that case, both 691 // sRendererDisabled and sSystemRendererDisabled are set. When 692 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 693 // can be used by code on the system process to escape that and enable 694 // HW accelerated drawing. (This is basically for the lock screen.) 695 696 final boolean fakeHwAccelerated = (attrs.privateFlags & 697 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 698 final boolean forceHwAccelerated = (attrs.privateFlags & 699 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 700 701 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 702 && forceHwAccelerated)) { 703 // Don't enable hardware acceleration when we're not on the main thread 704 if (!HardwareRenderer.sSystemRendererDisabled && 705 Looper.getMainLooper() != Looper.myLooper()) { 706 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 707 + "acceleration outside of the main thread, aborting"); 708 return; 709 } 710 711 if (mAttachInfo.mHardwareRenderer != null) { 712 mAttachInfo.mHardwareRenderer.destroy(true); 713 } 714 715 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 716 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 717 if (mAttachInfo.mHardwareRenderer != null) { 718 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 719 mAttachInfo.mHardwareAccelerated = 720 mAttachInfo.mHardwareAccelerationRequested = true; 721 } 722 } else if (fakeHwAccelerated) { 723 // The window had wanted to use hardware acceleration, but this 724 // is not allowed in its process. By setting this flag, it can 725 // still render as if it was accelerated. This is basically for 726 // the preview windows the window manager shows for launching 727 // applications, so they will look more like the app being launched. 728 mAttachInfo.mHardwareAccelerationRequested = true; 729 } 730 } 731 } 732 733 public View getView() { 734 return mView; 735 } 736 737 final WindowLeaked getLocation() { 738 return mLocation; 739 } 740 741 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 742 synchronized (this) { 743 int oldSoftInputMode = mWindowAttributes.softInputMode; 744 // Keep track of the actual window flags supplied by the client. 745 mClientWindowLayoutFlags = attrs.flags; 746 // preserve compatible window flag if exists. 747 int compatibleWindowFlag = 748 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 749 // transfer over system UI visibility values as they carry current state. 750 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 751 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 752 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 753 if (mWindowAttributes.packageName == null) { 754 mWindowAttributes.packageName = mBasePackageName; 755 } 756 mWindowAttributes.flags |= compatibleWindowFlag; 757 758 applyKeepScreenOnFlag(mWindowAttributes); 759 760 if (newView) { 761 mSoftInputMode = attrs.softInputMode; 762 requestLayout(); 763 } 764 // Don't lose the mode we last auto-computed. 765 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 766 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 767 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 768 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 769 | (oldSoftInputMode 770 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 771 } 772 mWindowAttributesChanged = true; 773 scheduleTraversals(); 774 } 775 } 776 777 void handleAppVisibility(boolean visible) { 778 if (mAppVisible != visible) { 779 mAppVisible = visible; 780 scheduleTraversals(); 781 } 782 } 783 784 void handleGetNewSurface() { 785 mNewSurfaceNeeded = true; 786 mFullRedrawNeeded = true; 787 scheduleTraversals(); 788 } 789 790 void handleScreenStateChange(boolean on) { 791 if (on != mAttachInfo.mScreenOn) { 792 mAttachInfo.mScreenOn = on; 793 if (mView != null) { 794 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 795 } 796 if (on) { 797 mFullRedrawNeeded = true; 798 scheduleTraversals(); 799 } 800 } 801 } 802 803 @Override 804 public void requestFitSystemWindows() { 805 checkThread(); 806 mFitSystemWindowsRequested = true; 807 scheduleTraversals(); 808 } 809 810 @Override 811 public void requestLayout() { 812 if (!mHandlingLayoutInLayoutRequest) { 813 checkThread(); 814 mLayoutRequested = true; 815 scheduleTraversals(); 816 } 817 } 818 819 @Override 820 public boolean isLayoutRequested() { 821 return mLayoutRequested; 822 } 823 824 void invalidate() { 825 mDirty.set(0, 0, mWidth, mHeight); 826 scheduleTraversals(); 827 } 828 829 void invalidateWorld(View view) { 830 view.invalidate(); 831 if (view instanceof ViewGroup) { 832 ViewGroup parent = (ViewGroup) view; 833 for (int i = 0; i < parent.getChildCount(); i++) { 834 invalidateWorld(parent.getChildAt(i)); 835 } 836 } 837 } 838 839 @Override 840 public void invalidateChild(View child, Rect dirty) { 841 invalidateChildInParent(null, dirty); 842 } 843 844 @Override 845 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 846 checkThread(); 847 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 848 849 if (dirty == null) { 850 invalidate(); 851 return null; 852 } else if (dirty.isEmpty() && !mIsAnimating) { 853 return null; 854 } 855 856 if (mCurScrollY != 0 || mTranslator != null) { 857 mTempRect.set(dirty); 858 dirty = mTempRect; 859 if (mCurScrollY != 0) { 860 dirty.offset(0, -mCurScrollY); 861 } 862 if (mTranslator != null) { 863 mTranslator.translateRectInAppWindowToScreen(dirty); 864 } 865 if (mAttachInfo.mScalingRequired) { 866 dirty.inset(-1, -1); 867 } 868 } 869 870 final Rect localDirty = mDirty; 871 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 872 mAttachInfo.mSetIgnoreDirtyState = true; 873 mAttachInfo.mIgnoreDirtyState = true; 874 } 875 876 // Add the new dirty rect to the current one 877 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 878 // Intersect with the bounds of the window to skip 879 // updates that lie outside of the visible region 880 final float appScale = mAttachInfo.mApplicationScale; 881 final boolean intersected = localDirty.intersect(0, 0, 882 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 883 if (!intersected) { 884 localDirty.setEmpty(); 885 } 886 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 887 scheduleTraversals(); 888 } 889 890 return null; 891 } 892 893 void setStopped(boolean stopped) { 894 if (mStopped != stopped) { 895 mStopped = stopped; 896 if (!stopped) { 897 scheduleTraversals(); 898 } 899 } 900 } 901 902 @Override 903 public ViewParent getParent() { 904 return null; 905 } 906 907 @Override 908 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 909 if (child != mView) { 910 throw new RuntimeException("child is not mine, honest!"); 911 } 912 // Note: don't apply scroll offset, because we want to know its 913 // visibility in the virtual canvas being given to the view hierarchy. 914 return r.intersect(0, 0, mWidth, mHeight); 915 } 916 917 public void bringChildToFront(View child) { 918 } 919 920 int getHostVisibility() { 921 return mAppVisible ? mView.getVisibility() : View.GONE; 922 } 923 924 void disposeResizeBuffer() { 925 if (mResizeBuffer != null && mAttachInfo.mHardwareRenderer != null) { 926 mAttachInfo.mHardwareRenderer.safelyRun(new Runnable() { 927 @Override 928 public void run() { 929 mResizeBuffer.destroy(); 930 mResizeBuffer = null; 931 } 932 }); 933 } 934 } 935 936 /** 937 * Add LayoutTransition to the list of transitions to be started in the next traversal. 938 * This list will be cleared after the transitions on the list are start()'ed. These 939 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 940 * happens during the layout phase of traversal, which we want to complete before any of the 941 * animations are started (because those animations may side-effect properties that layout 942 * depends upon, like the bounding rectangles of the affected views). So we add the transition 943 * to the list and it is started just prior to starting the drawing phase of traversal. 944 * 945 * @param transition The LayoutTransition to be started on the next traversal. 946 * 947 * @hide 948 */ 949 public void requestTransitionStart(LayoutTransition transition) { 950 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 951 if (mPendingTransitions == null) { 952 mPendingTransitions = new ArrayList<LayoutTransition>(); 953 } 954 mPendingTransitions.add(transition); 955 } 956 } 957 958 void scheduleTraversals() { 959 if (!mTraversalScheduled) { 960 mTraversalScheduled = true; 961 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 962 mChoreographer.postCallback( 963 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 964 scheduleConsumeBatchedInput(); 965 } 966 } 967 968 void unscheduleTraversals() { 969 if (mTraversalScheduled) { 970 mTraversalScheduled = false; 971 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 972 mChoreographer.removeCallbacks( 973 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 974 } 975 } 976 977 void doTraversal() { 978 if (mTraversalScheduled) { 979 mTraversalScheduled = false; 980 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 981 982 if (mProfile) { 983 Debug.startMethodTracing("ViewAncestor"); 984 } 985 986 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 987 try { 988 performTraversals(); 989 } finally { 990 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 991 } 992 993 if (mProfile) { 994 Debug.stopMethodTracing(); 995 mProfile = false; 996 } 997 } 998 } 999 1000 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1001 // Update window's global keep screen on flag: if a view has requested 1002 // that the screen be kept on, then it is always set; otherwise, it is 1003 // set to whatever the client last requested for the global state. 1004 if (mAttachInfo.mKeepScreenOn) { 1005 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1006 } else { 1007 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1008 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1009 } 1010 } 1011 1012 private boolean collectViewAttributes() { 1013 final View.AttachInfo attachInfo = mAttachInfo; 1014 if (attachInfo.mRecomputeGlobalAttributes) { 1015 //Log.i(TAG, "Computing view hierarchy attributes!"); 1016 attachInfo.mRecomputeGlobalAttributes = false; 1017 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1018 attachInfo.mKeepScreenOn = false; 1019 attachInfo.mSystemUiVisibility = 0; 1020 attachInfo.mHasSystemUiListeners = false; 1021 mView.dispatchCollectViewAttributes(attachInfo, 0); 1022 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1023 WindowManager.LayoutParams params = mWindowAttributes; 1024 if (attachInfo.mKeepScreenOn != oldScreenOn 1025 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1026 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1027 applyKeepScreenOnFlag(params); 1028 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1029 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1030 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1031 return true; 1032 } 1033 } 1034 return false; 1035 } 1036 1037 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1038 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1039 int childWidthMeasureSpec; 1040 int childHeightMeasureSpec; 1041 boolean windowSizeMayChange = false; 1042 1043 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1044 "Measuring " + host + " in display " + desiredWindowWidth 1045 + "x" + desiredWindowHeight + "..."); 1046 1047 boolean goodMeasure = false; 1048 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1049 // On large screens, we don't want to allow dialogs to just 1050 // stretch to fill the entire width of the screen to display 1051 // one line of text. First try doing the layout at a smaller 1052 // size to see if it will fit. 1053 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1054 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1055 int baseSize = 0; 1056 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1057 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1058 } 1059 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1060 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1061 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1062 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1063 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1064 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1065 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1066 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1067 goodMeasure = true; 1068 } else { 1069 // Didn't fit in that size... try expanding a bit. 1070 baseSize = (baseSize+desiredWindowWidth)/2; 1071 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1072 + baseSize); 1073 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1074 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1075 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1076 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1077 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1078 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1079 goodMeasure = true; 1080 } 1081 } 1082 } 1083 } 1084 1085 if (!goodMeasure) { 1086 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1087 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1088 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1089 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1090 windowSizeMayChange = true; 1091 } 1092 } 1093 1094 if (DBG) { 1095 System.out.println("======================================"); 1096 System.out.println("performTraversals -- after measure"); 1097 host.debug(); 1098 } 1099 1100 return windowSizeMayChange; 1101 } 1102 1103 private void performTraversals() { 1104 // cache mView since it is used so much below... 1105 final View host = mView; 1106 1107 if (DBG) { 1108 System.out.println("======================================"); 1109 System.out.println("performTraversals"); 1110 host.debug(); 1111 } 1112 1113 if (host == null || !mAdded) 1114 return; 1115 1116 mIsInTraversal = true; 1117 mWillDrawSoon = true; 1118 boolean windowSizeMayChange = false; 1119 boolean newSurface = false; 1120 boolean surfaceChanged = false; 1121 WindowManager.LayoutParams lp = mWindowAttributes; 1122 1123 int desiredWindowWidth; 1124 int desiredWindowHeight; 1125 1126 final View.AttachInfo attachInfo = mAttachInfo; 1127 1128 final int viewVisibility = getHostVisibility(); 1129 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1130 || mNewSurfaceNeeded; 1131 1132 WindowManager.LayoutParams params = null; 1133 if (mWindowAttributesChanged) { 1134 mWindowAttributesChanged = false; 1135 surfaceChanged = true; 1136 params = lp; 1137 } 1138 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1139 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1140 params = lp; 1141 mFullRedrawNeeded = true; 1142 mLayoutRequested = true; 1143 if (mLastInCompatMode) { 1144 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1145 mLastInCompatMode = false; 1146 } else { 1147 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1148 mLastInCompatMode = true; 1149 } 1150 } 1151 1152 mWindowAttributesChangesFlag = 0; 1153 1154 Rect frame = mWinFrame; 1155 if (mFirst) { 1156 mFullRedrawNeeded = true; 1157 mLayoutRequested = true; 1158 1159 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1160 // NOTE -- system code, won't try to do compat mode. 1161 Point size = new Point(); 1162 mDisplay.getRealSize(size); 1163 desiredWindowWidth = size.x; 1164 desiredWindowHeight = size.y; 1165 } else { 1166 DisplayMetrics packageMetrics = 1167 mView.getContext().getResources().getDisplayMetrics(); 1168 desiredWindowWidth = packageMetrics.widthPixels; 1169 desiredWindowHeight = packageMetrics.heightPixels; 1170 } 1171 1172 // For the very first time, tell the view hierarchy that it 1173 // is attached to the window. Note that at this point the surface 1174 // object is not initialized to its backing store, but soon it 1175 // will be (assuming the window is visible). 1176 attachInfo.mSurface = mSurface; 1177 // We used to use the following condition to choose 32 bits drawing caches: 1178 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1179 // However, windows are now always 32 bits by default, so choose 32 bits 1180 attachInfo.mUse32BitDrawingCache = true; 1181 attachInfo.mHasWindowFocus = false; 1182 attachInfo.mWindowVisibility = viewVisibility; 1183 attachInfo.mRecomputeGlobalAttributes = false; 1184 viewVisibilityChanged = false; 1185 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1186 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1187 // Set the layout direction if it has not been set before (inherit is the default) 1188 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1189 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1190 } 1191 host.dispatchAttachedToWindow(attachInfo, 0); 1192 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1193 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1194 host.fitSystemWindows(mFitSystemWindowsInsets); 1195 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1196 1197 } else { 1198 desiredWindowWidth = frame.width(); 1199 desiredWindowHeight = frame.height(); 1200 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1201 if (DEBUG_ORIENTATION) Log.v(TAG, 1202 "View " + host + " resized to: " + frame); 1203 mFullRedrawNeeded = true; 1204 mLayoutRequested = true; 1205 windowSizeMayChange = true; 1206 } 1207 } 1208 1209 if (viewVisibilityChanged) { 1210 attachInfo.mWindowVisibility = viewVisibility; 1211 host.dispatchWindowVisibilityChanged(viewVisibility); 1212 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1213 destroyHardwareResources(); 1214 } 1215 if (viewVisibility == View.GONE) { 1216 // After making a window gone, we will count it as being 1217 // shown for the first time the next time it gets focus. 1218 mHasHadWindowFocus = false; 1219 } 1220 } 1221 1222 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1223 getRunQueue().executeActions(attachInfo.mHandler); 1224 1225 boolean insetsChanged = false; 1226 1227 boolean layoutRequested = mLayoutRequested && !mStopped; 1228 if (layoutRequested) { 1229 1230 final Resources res = mView.getContext().getResources(); 1231 1232 if (mFirst) { 1233 // make sure touch mode code executes by setting cached value 1234 // to opposite of the added touch mode. 1235 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1236 ensureTouchModeLocally(mAddedTouchMode); 1237 } else { 1238 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1239 insetsChanged = true; 1240 } 1241 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1242 insetsChanged = true; 1243 } 1244 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1245 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1246 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1247 + mAttachInfo.mVisibleInsets); 1248 } 1249 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1250 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1251 windowSizeMayChange = true; 1252 1253 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1254 // NOTE -- system code, won't try to do compat mode. 1255 Point size = new Point(); 1256 mDisplay.getRealSize(size); 1257 desiredWindowWidth = size.x; 1258 desiredWindowHeight = size.y; 1259 } else { 1260 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1261 desiredWindowWidth = packageMetrics.widthPixels; 1262 desiredWindowHeight = packageMetrics.heightPixels; 1263 } 1264 } 1265 } 1266 1267 // Ask host how big it wants to be 1268 windowSizeMayChange |= measureHierarchy(host, lp, res, 1269 desiredWindowWidth, desiredWindowHeight); 1270 } 1271 1272 if (collectViewAttributes()) { 1273 params = lp; 1274 } 1275 if (attachInfo.mForceReportNewAttributes) { 1276 attachInfo.mForceReportNewAttributes = false; 1277 params = lp; 1278 } 1279 1280 if (mFirst || attachInfo.mViewVisibilityChanged) { 1281 attachInfo.mViewVisibilityChanged = false; 1282 int resizeMode = mSoftInputMode & 1283 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1284 // If we are in auto resize mode, then we need to determine 1285 // what mode to use now. 1286 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1287 final int N = attachInfo.mScrollContainers.size(); 1288 for (int i=0; i<N; i++) { 1289 if (attachInfo.mScrollContainers.get(i).isShown()) { 1290 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1291 } 1292 } 1293 if (resizeMode == 0) { 1294 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1295 } 1296 if ((lp.softInputMode & 1297 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1298 lp.softInputMode = (lp.softInputMode & 1299 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1300 resizeMode; 1301 params = lp; 1302 } 1303 } 1304 } 1305 1306 if (params != null) { 1307 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1308 if (!PixelFormat.formatHasAlpha(params.format)) { 1309 params.format = PixelFormat.TRANSLUCENT; 1310 } 1311 } 1312 mAttachInfo.mOverscanRequested = (params.flags 1313 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1314 } 1315 1316 if (mFitSystemWindowsRequested) { 1317 mFitSystemWindowsRequested = false; 1318 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1319 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1320 host.fitSystemWindows(mFitSystemWindowsInsets); 1321 if (mLayoutRequested) { 1322 // Short-circuit catching a new layout request here, so 1323 // we don't need to go through two layout passes when things 1324 // change due to fitting system windows, which can happen a lot. 1325 windowSizeMayChange |= measureHierarchy(host, lp, 1326 mView.getContext().getResources(), 1327 desiredWindowWidth, desiredWindowHeight); 1328 } 1329 } 1330 1331 if (layoutRequested) { 1332 // Clear this now, so that if anything requests a layout in the 1333 // rest of this function we will catch it and re-run a full 1334 // layout pass. 1335 mLayoutRequested = false; 1336 } 1337 1338 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1339 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1340 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1341 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1342 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1343 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1344 1345 final boolean computesInternalInsets = 1346 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1347 1348 boolean insetsPending = false; 1349 int relayoutResult = 0; 1350 1351 if (mFirst || windowShouldResize || insetsChanged || 1352 viewVisibilityChanged || params != null) { 1353 1354 if (viewVisibility == View.VISIBLE) { 1355 // If this window is giving internal insets to the window 1356 // manager, and it is being added or changing its visibility, 1357 // then we want to first give the window manager "fake" 1358 // insets to cause it to effectively ignore the content of 1359 // the window during layout. This avoids it briefly causing 1360 // other windows to resize/move based on the raw frame of the 1361 // window, waiting until we can finish laying out this window 1362 // and get back to the window manager with the ultimately 1363 // computed insets. 1364 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1365 } 1366 1367 if (mSurfaceHolder != null) { 1368 mSurfaceHolder.mSurfaceLock.lock(); 1369 mDrawingAllowed = true; 1370 } 1371 1372 boolean hwInitialized = false; 1373 boolean contentInsetsChanged = false; 1374 boolean hadSurface = mSurface.isValid(); 1375 1376 try { 1377 if (DEBUG_LAYOUT) { 1378 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1379 host.getMeasuredHeight() + ", params=" + params); 1380 } 1381 1382 final int surfaceGenerationId = mSurface.getGenerationId(); 1383 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1384 if (!mDrawDuringWindowsAnimating) { 1385 mWindowsAnimating |= 1386 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0; 1387 } 1388 1389 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1390 + " overscan=" + mPendingOverscanInsets.toShortString() 1391 + " content=" + mPendingContentInsets.toShortString() 1392 + " visible=" + mPendingVisibleInsets.toShortString() 1393 + " surface=" + mSurface); 1394 1395 if (mPendingConfiguration.seq != 0) { 1396 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1397 + mPendingConfiguration); 1398 updateConfiguration(mPendingConfiguration, !mFirst); 1399 mPendingConfiguration.seq = 0; 1400 } 1401 1402 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1403 mAttachInfo.mOverscanInsets); 1404 contentInsetsChanged = !mPendingContentInsets.equals( 1405 mAttachInfo.mContentInsets); 1406 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1407 mAttachInfo.mVisibleInsets); 1408 if (contentInsetsChanged) { 1409 if (mWidth > 0 && mHeight > 0 && lp != null && 1410 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1411 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1412 mSurface != null && mSurface.isValid() && 1413 !mAttachInfo.mTurnOffWindowResizeAnim && 1414 mAttachInfo.mHardwareRenderer != null && 1415 mAttachInfo.mHardwareRenderer.isEnabled() && 1416 mAttachInfo.mHardwareRenderer.validate() && 1417 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1418 1419 disposeResizeBuffer(); 1420 1421 boolean completed = false; 1422 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1423 HardwareCanvas layerCanvas = null; 1424 try { 1425 if (mResizeBuffer == null) { 1426 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1427 mWidth, mHeight, false); 1428 } else if (mResizeBuffer.getWidth() != mWidth || 1429 mResizeBuffer.getHeight() != mHeight) { 1430 mResizeBuffer.resize(mWidth, mHeight); 1431 } 1432 // TODO: should handle create/resize failure 1433 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1434 final int restoreCount = layerCanvas.save(); 1435 1436 int yoff; 1437 final boolean scrolling = mScroller != null 1438 && mScroller.computeScrollOffset(); 1439 if (scrolling) { 1440 yoff = mScroller.getCurrY(); 1441 mScroller.abortAnimation(); 1442 } else { 1443 yoff = mScrollY; 1444 } 1445 1446 layerCanvas.translate(0, -yoff); 1447 if (mTranslator != null) { 1448 mTranslator.translateCanvas(layerCanvas); 1449 } 1450 1451 DisplayList displayList = mView.mDisplayList; 1452 if (displayList != null && displayList.isValid()) { 1453 layerCanvas.drawDisplayList(displayList, null, 1454 DisplayList.FLAG_CLIP_CHILDREN); 1455 } else { 1456 mView.draw(layerCanvas); 1457 } 1458 1459 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1460 1461 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1462 mResizeBufferDuration = mView.getResources().getInteger( 1463 com.android.internal.R.integer.config_mediumAnimTime); 1464 completed = true; 1465 1466 layerCanvas.restoreToCount(restoreCount); 1467 } catch (OutOfMemoryError e) { 1468 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1469 } finally { 1470 if (mResizeBuffer != null) { 1471 mResizeBuffer.end(hwRendererCanvas); 1472 if (!completed) { 1473 disposeResizeBuffer(); 1474 } 1475 } 1476 } 1477 } 1478 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1479 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1480 + mAttachInfo.mContentInsets); 1481 } 1482 if (overscanInsetsChanged) { 1483 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1484 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1485 + mAttachInfo.mOverscanInsets); 1486 // Need to relayout with content insets. 1487 contentInsetsChanged = true; 1488 } 1489 if (contentInsetsChanged || mLastSystemUiVisibility != 1490 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1491 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1492 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1493 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1494 mFitSystemWindowsRequested = false; 1495 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1496 host.fitSystemWindows(mFitSystemWindowsInsets); 1497 } 1498 if (visibleInsetsChanged) { 1499 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1500 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1501 + mAttachInfo.mVisibleInsets); 1502 } 1503 1504 if (!hadSurface) { 1505 if (mSurface.isValid()) { 1506 // If we are creating a new surface, then we need to 1507 // completely redraw it. Also, when we get to the 1508 // point of drawing it we will hold off and schedule 1509 // a new traversal instead. This is so we can tell the 1510 // window manager about all of the windows being displayed 1511 // before actually drawing them, so it can display then 1512 // all at once. 1513 newSurface = true; 1514 mFullRedrawNeeded = true; 1515 mPreviousTransparentRegion.setEmpty(); 1516 1517 if (mAttachInfo.mHardwareRenderer != null) { 1518 try { 1519 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1520 mHolder.getSurface()); 1521 } catch (Surface.OutOfResourcesException e) { 1522 handleOutOfResourcesException(e); 1523 return; 1524 } 1525 } 1526 } 1527 } else if (!mSurface.isValid()) { 1528 // If the surface has been removed, then reset the scroll 1529 // positions. 1530 if (mLastScrolledFocus != null) { 1531 mLastScrolledFocus.clear(); 1532 } 1533 mScrollY = mCurScrollY = 0; 1534 if (mScroller != null) { 1535 mScroller.abortAnimation(); 1536 } 1537 disposeResizeBuffer(); 1538 // Our surface is gone 1539 if (mAttachInfo.mHardwareRenderer != null && 1540 mAttachInfo.mHardwareRenderer.isEnabled()) { 1541 mAttachInfo.mHardwareRenderer.destroy(true); 1542 } 1543 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1544 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1545 mFullRedrawNeeded = true; 1546 try { 1547 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1548 } catch (Surface.OutOfResourcesException e) { 1549 handleOutOfResourcesException(e); 1550 return; 1551 } 1552 } 1553 } catch (RemoteException e) { 1554 } 1555 1556 if (DEBUG_ORIENTATION) Log.v( 1557 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1558 1559 attachInfo.mWindowLeft = frame.left; 1560 attachInfo.mWindowTop = frame.top; 1561 1562 // !!FIXME!! This next section handles the case where we did not get the 1563 // window size we asked for. We should avoid this by getting a maximum size from 1564 // the window session beforehand. 1565 if (mWidth != frame.width() || mHeight != frame.height()) { 1566 mWidth = frame.width(); 1567 mHeight = frame.height(); 1568 } 1569 1570 if (mSurfaceHolder != null) { 1571 // The app owns the surface; tell it about what is going on. 1572 if (mSurface.isValid()) { 1573 // XXX .copyFrom() doesn't work! 1574 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1575 mSurfaceHolder.mSurface = mSurface; 1576 } 1577 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1578 mSurfaceHolder.mSurfaceLock.unlock(); 1579 if (mSurface.isValid()) { 1580 if (!hadSurface) { 1581 mSurfaceHolder.ungetCallbacks(); 1582 1583 mIsCreating = true; 1584 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1585 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1586 if (callbacks != null) { 1587 for (SurfaceHolder.Callback c : callbacks) { 1588 c.surfaceCreated(mSurfaceHolder); 1589 } 1590 } 1591 surfaceChanged = true; 1592 } 1593 if (surfaceChanged) { 1594 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1595 lp.format, mWidth, mHeight); 1596 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1597 if (callbacks != null) { 1598 for (SurfaceHolder.Callback c : callbacks) { 1599 c.surfaceChanged(mSurfaceHolder, lp.format, 1600 mWidth, mHeight); 1601 } 1602 } 1603 } 1604 mIsCreating = false; 1605 } else if (hadSurface) { 1606 mSurfaceHolder.ungetCallbacks(); 1607 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1608 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1609 if (callbacks != null) { 1610 for (SurfaceHolder.Callback c : callbacks) { 1611 c.surfaceDestroyed(mSurfaceHolder); 1612 } 1613 } 1614 mSurfaceHolder.mSurfaceLock.lock(); 1615 try { 1616 mSurfaceHolder.mSurface = new Surface(); 1617 } finally { 1618 mSurfaceHolder.mSurfaceLock.unlock(); 1619 } 1620 } 1621 } 1622 1623 if (mAttachInfo.mHardwareRenderer != null && 1624 mAttachInfo.mHardwareRenderer.isEnabled()) { 1625 if (hwInitialized || 1626 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1627 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1628 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1629 if (!hwInitialized) { 1630 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1631 mFullRedrawNeeded = true; 1632 } 1633 } 1634 } 1635 1636 if (!mStopped) { 1637 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1638 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1639 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1640 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1641 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1642 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1643 1644 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1645 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1646 + " mHeight=" + mHeight 1647 + " measuredHeight=" + host.getMeasuredHeight() 1648 + " coveredInsetsChanged=" + contentInsetsChanged); 1649 1650 // Ask host how big it wants to be 1651 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1652 1653 // Implementation of weights from WindowManager.LayoutParams 1654 // We just grow the dimensions as needed and re-measure if 1655 // needs be 1656 int width = host.getMeasuredWidth(); 1657 int height = host.getMeasuredHeight(); 1658 boolean measureAgain = false; 1659 1660 if (lp.horizontalWeight > 0.0f) { 1661 width += (int) ((mWidth - width) * lp.horizontalWeight); 1662 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1663 MeasureSpec.EXACTLY); 1664 measureAgain = true; 1665 } 1666 if (lp.verticalWeight > 0.0f) { 1667 height += (int) ((mHeight - height) * lp.verticalWeight); 1668 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1669 MeasureSpec.EXACTLY); 1670 measureAgain = true; 1671 } 1672 1673 if (measureAgain) { 1674 if (DEBUG_LAYOUT) Log.v(TAG, 1675 "And hey let's measure once more: width=" + width 1676 + " height=" + height); 1677 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1678 } 1679 1680 layoutRequested = true; 1681 } 1682 } 1683 } else { 1684 // Not the first pass and no window/insets/visibility change but the window 1685 // may have moved and we need check that and if so to update the left and right 1686 // in the attach info. We translate only the window frame since on window move 1687 // the window manager tells us only for the new frame but the insets are the 1688 // same and we do not want to translate them more than once. 1689 1690 // TODO: Well, we are checking whether the frame has changed similarly 1691 // to how this is done for the insets. This is however incorrect since 1692 // the insets and the frame are translated. For example, the old frame 1693 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1694 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1695 // true since we are comparing a not translated value to a translated one. 1696 // This scenario is rare but we may want to fix that. 1697 1698 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1699 || attachInfo.mWindowTop != frame.top); 1700 if (windowMoved) { 1701 if (mTranslator != null) { 1702 mTranslator.translateRectInScreenToAppWinFrame(frame); 1703 } 1704 attachInfo.mWindowLeft = frame.left; 1705 attachInfo.mWindowTop = frame.top; 1706 } 1707 } 1708 1709 final boolean didLayout = layoutRequested && !mStopped; 1710 boolean triggerGlobalLayoutListener = didLayout 1711 || attachInfo.mRecomputeGlobalAttributes; 1712 if (didLayout) { 1713 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1714 1715 // By this point all views have been sized and positioned 1716 // We can compute the transparent area 1717 1718 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1719 // start out transparent 1720 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1721 host.getLocationInWindow(mTmpLocation); 1722 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1723 mTmpLocation[0] + host.mRight - host.mLeft, 1724 mTmpLocation[1] + host.mBottom - host.mTop); 1725 1726 host.gatherTransparentRegion(mTransparentRegion); 1727 if (mTranslator != null) { 1728 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1729 } 1730 1731 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1732 mPreviousTransparentRegion.set(mTransparentRegion); 1733 mFullRedrawNeeded = true; 1734 // reconfigure window manager 1735 try { 1736 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1737 } catch (RemoteException e) { 1738 } 1739 } 1740 } 1741 1742 if (DBG) { 1743 System.out.println("======================================"); 1744 System.out.println("performTraversals -- after setFrame"); 1745 host.debug(); 1746 } 1747 } 1748 1749 if (triggerGlobalLayoutListener) { 1750 attachInfo.mRecomputeGlobalAttributes = false; 1751 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1752 } 1753 1754 if (computesInternalInsets) { 1755 // Clear the original insets. 1756 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1757 insets.reset(); 1758 1759 // Compute new insets in place. 1760 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1761 1762 // Tell the window manager. 1763 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1764 mLastGivenInsets.set(insets); 1765 1766 // Translate insets to screen coordinates if needed. 1767 final Rect contentInsets; 1768 final Rect visibleInsets; 1769 final Region touchableRegion; 1770 if (mTranslator != null) { 1771 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1772 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1773 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1774 } else { 1775 contentInsets = insets.contentInsets; 1776 visibleInsets = insets.visibleInsets; 1777 touchableRegion = insets.touchableRegion; 1778 } 1779 1780 try { 1781 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1782 contentInsets, visibleInsets, touchableRegion); 1783 } catch (RemoteException e) { 1784 } 1785 } 1786 } 1787 1788 boolean skipDraw = false; 1789 1790 if (mFirst) { 1791 // handle first focus request 1792 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1793 + mView.hasFocus()); 1794 if (mView != null) { 1795 if (!mView.hasFocus()) { 1796 mView.requestFocus(View.FOCUS_FORWARD); 1797 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1798 + mView.findFocus()); 1799 } else { 1800 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1801 + mView.findFocus()); 1802 } 1803 } 1804 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1805 // The first time we relayout the window, if the system is 1806 // doing window animations, we want to hold of on any future 1807 // draws until the animation is done. 1808 mWindowsAnimating = true; 1809 } 1810 } else if (mWindowsAnimating) { 1811 skipDraw = true; 1812 } 1813 1814 mFirst = false; 1815 mWillDrawSoon = false; 1816 mNewSurfaceNeeded = false; 1817 mViewVisibility = viewVisibility; 1818 1819 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1820 final boolean imTarget = WindowManager.LayoutParams 1821 .mayUseInputMethod(mWindowAttributes.flags); 1822 if (imTarget != mLastWasImTarget) { 1823 mLastWasImTarget = imTarget; 1824 InputMethodManager imm = InputMethodManager.peekInstance(); 1825 if (imm != null && imTarget) { 1826 imm.startGettingWindowFocus(mView); 1827 imm.onWindowFocus(mView, mView.findFocus(), 1828 mWindowAttributes.softInputMode, 1829 !mHasHadWindowFocus, mWindowAttributes.flags); 1830 } 1831 } 1832 } 1833 1834 // Remember if we must report the next draw. 1835 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1836 mReportNextDraw = true; 1837 } 1838 1839 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1840 viewVisibility != View.VISIBLE; 1841 1842 if (!cancelDraw && !newSurface) { 1843 if (!skipDraw || mReportNextDraw) { 1844 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1845 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1846 mPendingTransitions.get(i).startChangingAnimations(); 1847 } 1848 mPendingTransitions.clear(); 1849 } 1850 1851 performDraw(); 1852 } 1853 } else { 1854 if (viewVisibility == View.VISIBLE) { 1855 // Try again 1856 scheduleTraversals(); 1857 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1858 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1859 mPendingTransitions.get(i).endChangingAnimations(); 1860 } 1861 mPendingTransitions.clear(); 1862 } 1863 } 1864 1865 mIsInTraversal = false; 1866 } 1867 1868 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1869 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1870 try { 1871 if (!mWindowSession.outOfMemory(mWindow) && 1872 Process.myUid() != Process.SYSTEM_UID) { 1873 Slog.w(TAG, "No processes killed for memory; killing self"); 1874 Process.killProcess(Process.myPid()); 1875 } 1876 } catch (RemoteException ex) { 1877 } 1878 mLayoutRequested = true; // ask wm for a new surface next time. 1879 } 1880 1881 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1882 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1883 try { 1884 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1885 } finally { 1886 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1887 } 1888 } 1889 1890 /** 1891 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1892 * is currently undergoing a layout pass. 1893 * 1894 * @return whether the view hierarchy is currently undergoing a layout pass 1895 */ 1896 boolean isInLayout() { 1897 return mInLayout; 1898 } 1899 1900 /** 1901 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1902 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1903 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1904 * all children in that container hierarchy are measured and laid out at the end of the layout 1905 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1906 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1907 * we check all of those views to see if any still have pending layout requests, which 1908 * indicates that they were not correctly handled by their container hierarchy. If that is 1909 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1910 * to blank containers, and force a second request/measure/layout pass in this frame. If 1911 * more requestLayout() calls are received during that second layout pass, we post those 1912 * requests to the next frame to avoid possible infinite loops. 1913 * 1914 * <p>The return value from this method indicates whether the request should proceed 1915 * (if it is a request during the first layout pass) or should be skipped and posted to the 1916 * next frame (if it is a request during the second layout pass).</p> 1917 * 1918 * @param view the view that requested the layout. 1919 * 1920 * @return true if request should proceed, false otherwise. 1921 */ 1922 boolean requestLayoutDuringLayout(final View view) { 1923 if (view.mParent == null || view.mAttachInfo == null) { 1924 // Would not normally trigger another layout, so just let it pass through as usual 1925 return true; 1926 } 1927 if (!mLayoutRequesters.contains(view)) { 1928 mLayoutRequesters.add(view); 1929 } 1930 if (!mHandlingLayoutInLayoutRequest) { 1931 // Let the request proceed normally; it will be processed in a second layout pass 1932 // if necessary 1933 return true; 1934 } else { 1935 // Don't let the request proceed during the second layout pass. 1936 // It will post to the next frame instead. 1937 return false; 1938 } 1939 } 1940 1941 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1942 int desiredWindowHeight) { 1943 mLayoutRequested = false; 1944 mScrollMayChange = true; 1945 mInLayout = true; 1946 1947 final View host = mView; 1948 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1949 Log.v(TAG, "Laying out " + host + " to (" + 1950 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1951 } 1952 1953 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1954 try { 1955 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1956 1957 mInLayout = false; 1958 int numViewsRequestingLayout = mLayoutRequesters.size(); 1959 if (numViewsRequestingLayout > 0) { 1960 // requestLayout() was called during layout. 1961 // If no layout-request flags are set on the requesting views, there is no problem. 1962 // If some requests are still pending, then we need to clear those flags and do 1963 // a full request/measure/layout pass to handle this situation. 1964 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1965 false); 1966 if (validLayoutRequesters != null) { 1967 // Set this flag to indicate that any further requests are happening during 1968 // the second pass, which may result in posting those requests to the next 1969 // frame instead 1970 mHandlingLayoutInLayoutRequest = true; 1971 1972 // Process fresh layout requests, then measure and layout 1973 int numValidRequests = validLayoutRequesters.size(); 1974 for (int i = 0; i < numValidRequests; ++i) { 1975 final View view = validLayoutRequesters.get(i); 1976 Log.w("View", "requestLayout() improperly called by " + view + 1977 " during layout: running second layout pass"); 1978 view.requestLayout(); 1979 } 1980 measureHierarchy(host, lp, mView.getContext().getResources(), 1981 desiredWindowWidth, desiredWindowHeight); 1982 mInLayout = true; 1983 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1984 1985 mHandlingLayoutInLayoutRequest = false; 1986 1987 // Check the valid requests again, this time without checking/clearing the 1988 // layout flags, since requests happening during the second pass get noop'd 1989 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 1990 if (validLayoutRequesters != null) { 1991 final ArrayList<View> finalRequesters = validLayoutRequesters; 1992 // Post second-pass requests to the next frame 1993 getRunQueue().post(new Runnable() { 1994 @Override 1995 public void run() { 1996 int numValidRequests = finalRequesters.size(); 1997 for (int i = 0; i < numValidRequests; ++i) { 1998 final View view = finalRequesters.get(i); 1999 Log.w("View", "requestLayout() improperly called by " + view + 2000 " during second layout pass: posting in next frame"); 2001 view.requestLayout(); 2002 } 2003 } 2004 }); 2005 } 2006 } 2007 2008 } 2009 } finally { 2010 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2011 } 2012 mInLayout = false; 2013 } 2014 2015 /** 2016 * This method is called during layout when there have been calls to requestLayout() during 2017 * layout. It walks through the list of views that requested layout to determine which ones 2018 * still need it, based on visibility in the hierarchy and whether they have already been 2019 * handled (as is usually the case with ListView children). 2020 * 2021 * @param layoutRequesters The list of views that requested layout during layout 2022 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2023 * If so, the FORCE_LAYOUT flag was not set on requesters. 2024 * @return A list of the actual views that still need to be laid out. 2025 */ 2026 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2027 boolean secondLayoutRequests) { 2028 2029 int numViewsRequestingLayout = layoutRequesters.size(); 2030 ArrayList<View> validLayoutRequesters = null; 2031 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2032 View view = layoutRequesters.get(i); 2033 if (view != null && view.mAttachInfo != null && view.mParent != null && 2034 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2035 View.PFLAG_FORCE_LAYOUT)) { 2036 boolean gone = false; 2037 View parent = view; 2038 // Only trigger new requests for views in a non-GONE hierarchy 2039 while (parent != null) { 2040 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2041 gone = true; 2042 break; 2043 } 2044 if (parent.mParent instanceof View) { 2045 parent = (View) parent.mParent; 2046 } else { 2047 parent = null; 2048 } 2049 } 2050 if (!gone) { 2051 if (validLayoutRequesters == null) { 2052 validLayoutRequesters = new ArrayList<View>(); 2053 } 2054 validLayoutRequesters.add(view); 2055 } 2056 } 2057 } 2058 if (!secondLayoutRequests) { 2059 // If we're checking the layout flags, then we need to clean them up also 2060 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2061 View view = layoutRequesters.get(i); 2062 while (view != null && 2063 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2064 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2065 if (view.mParent instanceof View) { 2066 view = (View) view.mParent; 2067 } else { 2068 view = null; 2069 } 2070 } 2071 } 2072 } 2073 layoutRequesters.clear(); 2074 return validLayoutRequesters; 2075 } 2076 2077 public void requestTransparentRegion(View child) { 2078 // the test below should not fail unless someone is messing with us 2079 checkThread(); 2080 if (mView == child) { 2081 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2082 // Need to make sure we re-evaluate the window attributes next 2083 // time around, to ensure the window has the correct format. 2084 mWindowAttributesChanged = true; 2085 mWindowAttributesChangesFlag = 0; 2086 requestLayout(); 2087 } 2088 } 2089 2090 /** 2091 * Figures out the measure spec for the root view in a window based on it's 2092 * layout params. 2093 * 2094 * @param windowSize 2095 * The available width or height of the window 2096 * 2097 * @param rootDimension 2098 * The layout params for one dimension (width or height) of the 2099 * window. 2100 * 2101 * @return The measure spec to use to measure the root view. 2102 */ 2103 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2104 int measureSpec; 2105 switch (rootDimension) { 2106 2107 case ViewGroup.LayoutParams.MATCH_PARENT: 2108 // Window can't resize. Force root view to be windowSize. 2109 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2110 break; 2111 case ViewGroup.LayoutParams.WRAP_CONTENT: 2112 // Window can resize. Set max size for root view. 2113 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2114 break; 2115 default: 2116 // Window wants to be an exact size. Force root view to be that size. 2117 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2118 break; 2119 } 2120 return measureSpec; 2121 } 2122 2123 int mHardwareYOffset; 2124 int mResizeAlpha; 2125 final Paint mResizePaint = new Paint(); 2126 2127 public void onHardwarePreDraw(HardwareCanvas canvas) { 2128 canvas.translate(0, -mHardwareYOffset); 2129 } 2130 2131 public void onHardwarePostDraw(HardwareCanvas canvas) { 2132 if (mResizeBuffer != null) { 2133 mResizePaint.setAlpha(mResizeAlpha); 2134 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2135 } 2136 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2137 } 2138 2139 /** 2140 * @hide 2141 */ 2142 void outputDisplayList(View view) { 2143 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2144 DisplayList displayList = view.getDisplayList(); 2145 if (displayList != null) { 2146 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2147 } 2148 } 2149 } 2150 2151 /** 2152 * @see #PROPERTY_PROFILE_RENDERING 2153 */ 2154 private void profileRendering(boolean enabled) { 2155 if (mProfileRendering) { 2156 mRenderProfilingEnabled = enabled; 2157 2158 if (mRenderProfiler != null) { 2159 mChoreographer.removeFrameCallback(mRenderProfiler); 2160 } 2161 if (mRenderProfilingEnabled) { 2162 if (mRenderProfiler == null) { 2163 mRenderProfiler = new Choreographer.FrameCallback() { 2164 @Override 2165 public void doFrame(long frameTimeNanos) { 2166 mDirty.set(0, 0, mWidth, mHeight); 2167 scheduleTraversals(); 2168 if (mRenderProfilingEnabled) { 2169 mChoreographer.postFrameCallback(mRenderProfiler); 2170 } 2171 } 2172 }; 2173 } 2174 mChoreographer.postFrameCallback(mRenderProfiler); 2175 } else { 2176 mRenderProfiler = null; 2177 } 2178 } 2179 } 2180 2181 /** 2182 * Called from draw() when DEBUG_FPS is enabled 2183 */ 2184 private void trackFPS() { 2185 // Tracks frames per second drawn. First value in a series of draws may be bogus 2186 // because it down not account for the intervening idle time 2187 long nowTime = System.currentTimeMillis(); 2188 if (mFpsStartTime < 0) { 2189 mFpsStartTime = mFpsPrevTime = nowTime; 2190 mFpsNumFrames = 0; 2191 } else { 2192 ++mFpsNumFrames; 2193 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2194 long frameTime = nowTime - mFpsPrevTime; 2195 long totalTime = nowTime - mFpsStartTime; 2196 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2197 mFpsPrevTime = nowTime; 2198 if (totalTime > 1000) { 2199 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2200 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2201 mFpsStartTime = nowTime; 2202 mFpsNumFrames = 0; 2203 } 2204 } 2205 } 2206 2207 private void performDraw() { 2208 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2209 return; 2210 } 2211 2212 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2213 mFullRedrawNeeded = false; 2214 2215 mIsDrawing = true; 2216 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2217 try { 2218 draw(fullRedrawNeeded); 2219 } finally { 2220 mIsDrawing = false; 2221 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2222 } 2223 2224 if (mReportNextDraw) { 2225 mReportNextDraw = false; 2226 2227 if (LOCAL_LOGV) { 2228 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2229 } 2230 if (mSurfaceHolder != null && mSurface.isValid()) { 2231 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2232 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2233 if (callbacks != null) { 2234 for (SurfaceHolder.Callback c : callbacks) { 2235 if (c instanceof SurfaceHolder.Callback2) { 2236 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2237 mSurfaceHolder); 2238 } 2239 } 2240 } 2241 } 2242 try { 2243 mWindowSession.finishDrawing(mWindow); 2244 } catch (RemoteException e) { 2245 } 2246 } 2247 } 2248 2249 private void draw(boolean fullRedrawNeeded) { 2250 Surface surface = mSurface; 2251 if (!surface.isValid()) { 2252 return; 2253 } 2254 2255 if (DEBUG_FPS) { 2256 trackFPS(); 2257 } 2258 2259 if (!sFirstDrawComplete) { 2260 synchronized (sFirstDrawHandlers) { 2261 sFirstDrawComplete = true; 2262 final int count = sFirstDrawHandlers.size(); 2263 for (int i = 0; i< count; i++) { 2264 mHandler.post(sFirstDrawHandlers.get(i)); 2265 } 2266 } 2267 } 2268 2269 scrollToRectOrFocus(null, false); 2270 2271 final AttachInfo attachInfo = mAttachInfo; 2272 if (attachInfo.mViewScrollChanged) { 2273 attachInfo.mViewScrollChanged = false; 2274 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2275 } 2276 2277 int yoff; 2278 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2279 if (animating) { 2280 yoff = mScroller.getCurrY(); 2281 } else { 2282 yoff = mScrollY; 2283 } 2284 if (mCurScrollY != yoff) { 2285 mCurScrollY = yoff; 2286 fullRedrawNeeded = true; 2287 } 2288 2289 final float appScale = attachInfo.mApplicationScale; 2290 final boolean scalingRequired = attachInfo.mScalingRequired; 2291 2292 int resizeAlpha = 0; 2293 if (mResizeBuffer != null) { 2294 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2295 if (deltaTime < mResizeBufferDuration) { 2296 float amt = deltaTime/(float) mResizeBufferDuration; 2297 amt = mResizeInterpolator.getInterpolation(amt); 2298 animating = true; 2299 resizeAlpha = 255 - (int)(amt*255); 2300 } else { 2301 disposeResizeBuffer(); 2302 } 2303 } 2304 2305 final Rect dirty = mDirty; 2306 if (mSurfaceHolder != null) { 2307 // The app owns the surface, we won't draw. 2308 dirty.setEmpty(); 2309 if (animating) { 2310 if (mScroller != null) { 2311 mScroller.abortAnimation(); 2312 } 2313 disposeResizeBuffer(); 2314 } 2315 return; 2316 } 2317 2318 if (fullRedrawNeeded) { 2319 attachInfo.mIgnoreDirtyState = true; 2320 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2321 } 2322 2323 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2324 Log.v(TAG, "Draw " + mView + "/" 2325 + mWindowAttributes.getTitle() 2326 + ": dirty={" + dirty.left + "," + dirty.top 2327 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2328 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2329 appScale + ", width=" + mWidth + ", height=" + mHeight); 2330 } 2331 2332 invalidateDisplayLists(); 2333 2334 attachInfo.mTreeObserver.dispatchOnDraw(); 2335 2336 if (!dirty.isEmpty() || mIsAnimating) { 2337 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2338 // Draw with hardware renderer. 2339 mIsAnimating = false; 2340 mHardwareYOffset = yoff; 2341 mResizeAlpha = resizeAlpha; 2342 2343 mCurrentDirty.set(dirty); 2344 dirty.setEmpty(); 2345 2346 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2347 animating ? null : mCurrentDirty); 2348 } else { 2349 // If we get here with a disabled & requested hardware renderer, something went 2350 // wrong (an invalidate posted right before we destroyed the hardware surface 2351 // for instance) so we should just bail out. Locking the surface with software 2352 // rendering at this point would lock it forever and prevent hardware renderer 2353 // from doing its job when it comes back. 2354 // Before we request a new frame we must however attempt to reinitiliaze the 2355 // hardware renderer if it's in requested state. This would happen after an 2356 // eglTerminate() for instance. 2357 if (attachInfo.mHardwareRenderer != null && 2358 !attachInfo.mHardwareRenderer.isEnabled() && 2359 attachInfo.mHardwareRenderer.isRequested()) { 2360 2361 try { 2362 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2363 mHolder.getSurface()); 2364 } catch (Surface.OutOfResourcesException e) { 2365 handleOutOfResourcesException(e); 2366 return; 2367 } 2368 2369 mFullRedrawNeeded = true; 2370 scheduleTraversals(); 2371 return; 2372 } 2373 2374 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2375 return; 2376 } 2377 } 2378 } 2379 2380 if (animating) { 2381 mFullRedrawNeeded = true; 2382 scheduleTraversals(); 2383 } 2384 } 2385 2386 /** 2387 * @return true if drawing was succesfull, false if an error occurred 2388 */ 2389 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2390 boolean scalingRequired, Rect dirty) { 2391 2392 // Draw with software renderer. 2393 Canvas canvas; 2394 try { 2395 int left = dirty.left; 2396 int top = dirty.top; 2397 int right = dirty.right; 2398 int bottom = dirty.bottom; 2399 2400 canvas = mSurface.lockCanvas(dirty); 2401 2402 // The dirty rectangle can be modified by Surface.lockCanvas() 2403 //noinspection ConstantConditions 2404 if (left != dirty.left || top != dirty.top || right != dirty.right || 2405 bottom != dirty.bottom) { 2406 attachInfo.mIgnoreDirtyState = true; 2407 } 2408 2409 // TODO: Do this in native 2410 canvas.setDensity(mDensity); 2411 } catch (Surface.OutOfResourcesException e) { 2412 handleOutOfResourcesException(e); 2413 return false; 2414 } catch (IllegalArgumentException e) { 2415 Log.e(TAG, "Could not lock surface", e); 2416 // Don't assume this is due to out of memory, it could be 2417 // something else, and if it is something else then we could 2418 // kill stuff (or ourself) for no reason. 2419 mLayoutRequested = true; // ask wm for a new surface next time. 2420 return false; 2421 } 2422 2423 try { 2424 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2425 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2426 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2427 //canvas.drawARGB(255, 255, 0, 0); 2428 } 2429 2430 // If this bitmap's format includes an alpha channel, we 2431 // need to clear it before drawing so that the child will 2432 // properly re-composite its drawing on a transparent 2433 // background. This automatically respects the clip/dirty region 2434 // or 2435 // If we are applying an offset, we need to clear the area 2436 // where the offset doesn't appear to avoid having garbage 2437 // left in the blank areas. 2438 if (!canvas.isOpaque() || yoff != 0) { 2439 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2440 } 2441 2442 dirty.setEmpty(); 2443 mIsAnimating = false; 2444 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2445 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2446 2447 if (DEBUG_DRAW) { 2448 Context cxt = mView.getContext(); 2449 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2450 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2451 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2452 } 2453 try { 2454 canvas.translate(0, -yoff); 2455 if (mTranslator != null) { 2456 mTranslator.translateCanvas(canvas); 2457 } 2458 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2459 attachInfo.mSetIgnoreDirtyState = false; 2460 2461 mView.draw(canvas); 2462 2463 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2464 } finally { 2465 if (!attachInfo.mSetIgnoreDirtyState) { 2466 // Only clear the flag if it was not set during the mView.draw() call 2467 attachInfo.mIgnoreDirtyState = false; 2468 } 2469 } 2470 } finally { 2471 try { 2472 surface.unlockCanvasAndPost(canvas); 2473 } catch (IllegalArgumentException e) { 2474 Log.e(TAG, "Could not unlock surface", e); 2475 mLayoutRequested = true; // ask wm for a new surface next time. 2476 //noinspection ReturnInsideFinallyBlock 2477 return false; 2478 } 2479 2480 if (LOCAL_LOGV) { 2481 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2482 } 2483 } 2484 return true; 2485 } 2486 2487 /** 2488 * We want to draw a highlight around the current accessibility focused. 2489 * Since adding a style for all possible view is not a viable option we 2490 * have this specialized drawing method. 2491 * 2492 * Note: We are doing this here to be able to draw the highlight for 2493 * virtual views in addition to real ones. 2494 * 2495 * @param canvas The canvas on which to draw. 2496 */ 2497 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2498 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2499 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2500 return; 2501 } 2502 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2503 return; 2504 } 2505 Drawable drawable = getAccessibilityFocusedDrawable(); 2506 if (drawable == null) { 2507 return; 2508 } 2509 AccessibilityNodeProvider provider = 2510 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2511 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2512 if (provider == null) { 2513 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2514 } else { 2515 if (mAccessibilityFocusedVirtualView == null) { 2516 return; 2517 } 2518 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2519 } 2520 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2521 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2522 drawable.setBounds(bounds); 2523 drawable.draw(canvas); 2524 } 2525 2526 private Drawable getAccessibilityFocusedDrawable() { 2527 if (mAttachInfo != null) { 2528 // Lazily load the accessibility focus drawable. 2529 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2530 TypedValue value = new TypedValue(); 2531 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2532 R.attr.accessibilityFocusedDrawable, value, true); 2533 if (resolved) { 2534 mAttachInfo.mAccessibilityFocusDrawable = 2535 mView.mContext.getResources().getDrawable(value.resourceId); 2536 } 2537 } 2538 return mAttachInfo.mAccessibilityFocusDrawable; 2539 } 2540 return null; 2541 } 2542 2543 void invalidateDisplayLists() { 2544 final ArrayList<DisplayList> displayLists = mDisplayLists; 2545 final int count = displayLists.size(); 2546 2547 for (int i = 0; i < count; i++) { 2548 final DisplayList displayList = displayLists.get(i); 2549 if (displayList.isDirty()) { 2550 displayList.reset(); 2551 } 2552 } 2553 2554 displayLists.clear(); 2555 } 2556 2557 /** 2558 * @hide 2559 */ 2560 public void setDrawDuringWindowsAnimating(boolean value) { 2561 mDrawDuringWindowsAnimating = value; 2562 if (value) { 2563 handleDispatchDoneAnimating(); 2564 } 2565 } 2566 2567 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2568 final View.AttachInfo attachInfo = mAttachInfo; 2569 final Rect ci = attachInfo.mContentInsets; 2570 final Rect vi = attachInfo.mVisibleInsets; 2571 int scrollY = 0; 2572 boolean handled = false; 2573 2574 if (vi.left > ci.left || vi.top > ci.top 2575 || vi.right > ci.right || vi.bottom > ci.bottom) { 2576 // We'll assume that we aren't going to change the scroll 2577 // offset, since we want to avoid that unless it is actually 2578 // going to make the focus visible... otherwise we scroll 2579 // all over the place. 2580 scrollY = mScrollY; 2581 // We can be called for two different situations: during a draw, 2582 // to update the scroll position if the focus has changed (in which 2583 // case 'rectangle' is null), or in response to a 2584 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2585 // is non-null and we just want to scroll to whatever that 2586 // rectangle is). 2587 final View focus = mView.findFocus(); 2588 if (focus == null) { 2589 return false; 2590 } 2591 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2592 if (focus != lastScrolledFocus) { 2593 // If the focus has changed, then ignore any requests to scroll 2594 // to a rectangle; first we want to make sure the entire focus 2595 // view is visible. 2596 rectangle = null; 2597 } 2598 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2599 + " rectangle=" + rectangle + " ci=" + ci 2600 + " vi=" + vi); 2601 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2602 // Optimization: if the focus hasn't changed since last 2603 // time, and no layout has happened, then just leave things 2604 // as they are. 2605 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2606 + mScrollY + " vi=" + vi.toShortString()); 2607 } else { 2608 // We need to determine if the currently focused view is 2609 // within the visible part of the window and, if not, apply 2610 // a pan so it can be seen. 2611 mLastScrolledFocus = new WeakReference<View>(focus); 2612 mScrollMayChange = false; 2613 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2614 // Try to find the rectangle from the focus view. 2615 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2616 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2617 + mView.getWidth() + " h=" + mView.getHeight() 2618 + " ci=" + ci.toShortString() 2619 + " vi=" + vi.toShortString()); 2620 if (rectangle == null) { 2621 focus.getFocusedRect(mTempRect); 2622 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2623 + ": focusRect=" + mTempRect.toShortString()); 2624 if (mView instanceof ViewGroup) { 2625 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2626 focus, mTempRect); 2627 } 2628 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2629 "Focus in window: focusRect=" 2630 + mTempRect.toShortString() 2631 + " visRect=" + mVisRect.toShortString()); 2632 } else { 2633 mTempRect.set(rectangle); 2634 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2635 "Request scroll to rect: " 2636 + mTempRect.toShortString() 2637 + " visRect=" + mVisRect.toShortString()); 2638 } 2639 if (mTempRect.intersect(mVisRect)) { 2640 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2641 "Focus window visible rect: " 2642 + mTempRect.toShortString()); 2643 if (mTempRect.height() > 2644 (mView.getHeight()-vi.top-vi.bottom)) { 2645 // If the focus simply is not going to fit, then 2646 // best is probably just to leave things as-is. 2647 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2648 "Too tall; leaving scrollY=" + scrollY); 2649 } else if ((mTempRect.top-scrollY) < vi.top) { 2650 scrollY -= vi.top - (mTempRect.top-scrollY); 2651 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2652 "Top covered; scrollY=" + scrollY); 2653 } else if ((mTempRect.bottom-scrollY) 2654 > (mView.getHeight()-vi.bottom)) { 2655 scrollY += (mTempRect.bottom-scrollY) 2656 - (mView.getHeight()-vi.bottom); 2657 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2658 "Bottom covered; scrollY=" + scrollY); 2659 } 2660 handled = true; 2661 } 2662 } 2663 } 2664 } 2665 2666 if (scrollY != mScrollY) { 2667 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2668 + mScrollY + " , new=" + scrollY); 2669 if (!immediate && mResizeBuffer == null) { 2670 if (mScroller == null) { 2671 mScroller = new Scroller(mView.getContext()); 2672 } 2673 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2674 } else if (mScroller != null) { 2675 mScroller.abortAnimation(); 2676 } 2677 mScrollY = scrollY; 2678 } 2679 2680 return handled; 2681 } 2682 2683 /** 2684 * @hide 2685 */ 2686 public View getAccessibilityFocusedHost() { 2687 return mAccessibilityFocusedHost; 2688 } 2689 2690 /** 2691 * @hide 2692 */ 2693 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2694 return mAccessibilityFocusedVirtualView; 2695 } 2696 2697 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2698 // If we have a virtual view with accessibility focus we need 2699 // to clear the focus and invalidate the virtual view bounds. 2700 if (mAccessibilityFocusedVirtualView != null) { 2701 2702 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2703 View focusHost = mAccessibilityFocusedHost; 2704 2705 // Wipe the state of the current accessibility focus since 2706 // the call into the provider to clear accessibility focus 2707 // will fire an accessibility event which will end up calling 2708 // this method and we want to have clean state when this 2709 // invocation happens. 2710 mAccessibilityFocusedHost = null; 2711 mAccessibilityFocusedVirtualView = null; 2712 2713 // Clear accessibility focus on the host after clearing state since 2714 // this method may be reentrant. 2715 focusHost.clearAccessibilityFocusNoCallbacks(); 2716 2717 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2718 if (provider != null) { 2719 // Invalidate the area of the cleared accessibility focus. 2720 focusNode.getBoundsInParent(mTempRect); 2721 focusHost.invalidate(mTempRect); 2722 // Clear accessibility focus in the virtual node. 2723 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2724 focusNode.getSourceNodeId()); 2725 provider.performAction(virtualNodeId, 2726 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2727 } 2728 focusNode.recycle(); 2729 } 2730 if (mAccessibilityFocusedHost != null) { 2731 // Clear accessibility focus in the view. 2732 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2733 } 2734 2735 // Set the new focus host and node. 2736 mAccessibilityFocusedHost = view; 2737 mAccessibilityFocusedVirtualView = node; 2738 } 2739 2740 public void requestChildFocus(View child, View focused) { 2741 if (DEBUG_INPUT_RESIZE) { 2742 Log.v(TAG, "Request child focus: focus now " + focused); 2743 } 2744 checkThread(); 2745 scheduleTraversals(); 2746 } 2747 2748 public void clearChildFocus(View child) { 2749 if (DEBUG_INPUT_RESIZE) { 2750 Log.v(TAG, "Clearing child focus"); 2751 } 2752 checkThread(); 2753 scheduleTraversals(); 2754 } 2755 2756 @Override 2757 public ViewParent getParentForAccessibility() { 2758 return null; 2759 } 2760 2761 public void focusableViewAvailable(View v) { 2762 checkThread(); 2763 if (mView != null) { 2764 if (!mView.hasFocus()) { 2765 v.requestFocus(); 2766 } else { 2767 // the one case where will transfer focus away from the current one 2768 // is if the current view is a view group that prefers to give focus 2769 // to its children first AND the view is a descendant of it. 2770 View focused = mView.findFocus(); 2771 if (focused instanceof ViewGroup) { 2772 ViewGroup group = (ViewGroup) focused; 2773 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2774 && isViewDescendantOf(v, focused)) { 2775 v.requestFocus(); 2776 } 2777 } 2778 } 2779 } 2780 } 2781 2782 public void recomputeViewAttributes(View child) { 2783 checkThread(); 2784 if (mView == child) { 2785 mAttachInfo.mRecomputeGlobalAttributes = true; 2786 if (!mWillDrawSoon) { 2787 scheduleTraversals(); 2788 } 2789 } 2790 } 2791 2792 void dispatchDetachedFromWindow() { 2793 if (mView != null && mView.mAttachInfo != null) { 2794 if (mAttachInfo.mHardwareRenderer != null && 2795 mAttachInfo.mHardwareRenderer.isEnabled()) { 2796 mAttachInfo.mHardwareRenderer.validate(); 2797 } 2798 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2799 mView.dispatchDetachedFromWindow(); 2800 } 2801 2802 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2803 mAccessibilityManager.removeAccessibilityStateChangeListener( 2804 mAccessibilityInteractionConnectionManager); 2805 removeSendWindowContentChangedCallback(); 2806 2807 destroyHardwareRenderer(); 2808 2809 setAccessibilityFocus(null, null); 2810 2811 mView.assignParent(null); 2812 mView = null; 2813 mAttachInfo.mRootView = null; 2814 mAttachInfo.mSurface = null; 2815 2816 mSurface.release(); 2817 2818 if (mInputQueueCallback != null && mInputQueue != null) { 2819 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2820 mInputQueue.dispose(); 2821 mInputQueueCallback = null; 2822 mInputQueue = null; 2823 } 2824 if (mInputEventReceiver != null) { 2825 mInputEventReceiver.dispose(); 2826 mInputEventReceiver = null; 2827 } 2828 try { 2829 mWindowSession.remove(mWindow); 2830 } catch (RemoteException e) { 2831 } 2832 2833 // Dispose the input channel after removing the window so the Window Manager 2834 // doesn't interpret the input channel being closed as an abnormal termination. 2835 if (mInputChannel != null) { 2836 mInputChannel.dispose(); 2837 mInputChannel = null; 2838 } 2839 2840 unscheduleTraversals(); 2841 } 2842 2843 void updateConfiguration(Configuration config, boolean force) { 2844 if (DEBUG_CONFIGURATION) Log.v(TAG, 2845 "Applying new config to window " 2846 + mWindowAttributes.getTitle() 2847 + ": " + config); 2848 2849 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2850 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2851 config = new Configuration(config); 2852 ci.applyToConfiguration(mNoncompatDensity, config); 2853 } 2854 2855 synchronized (sConfigCallbacks) { 2856 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2857 sConfigCallbacks.get(i).onConfigurationChanged(config); 2858 } 2859 } 2860 if (mView != null) { 2861 // At this point the resources have been updated to 2862 // have the most recent config, whatever that is. Use 2863 // the one in them which may be newer. 2864 config = mView.getResources().getConfiguration(); 2865 if (force || mLastConfiguration.diff(config) != 0) { 2866 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2867 final int currentLayoutDirection = config.getLayoutDirection(); 2868 mLastConfiguration.setTo(config); 2869 if (lastLayoutDirection != currentLayoutDirection && 2870 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2871 mView.setLayoutDirection(currentLayoutDirection); 2872 } 2873 mView.dispatchConfigurationChanged(config); 2874 } 2875 } 2876 } 2877 2878 /** 2879 * Return true if child is an ancestor of parent, (or equal to the parent). 2880 */ 2881 public static boolean isViewDescendantOf(View child, View parent) { 2882 if (child == parent) { 2883 return true; 2884 } 2885 2886 final ViewParent theParent = child.getParent(); 2887 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2888 } 2889 2890 private static void forceLayout(View view) { 2891 view.forceLayout(); 2892 if (view instanceof ViewGroup) { 2893 ViewGroup group = (ViewGroup) view; 2894 final int count = group.getChildCount(); 2895 for (int i = 0; i < count; i++) { 2896 forceLayout(group.getChildAt(i)); 2897 } 2898 } 2899 } 2900 2901 private final static int MSG_INVALIDATE = 1; 2902 private final static int MSG_INVALIDATE_RECT = 2; 2903 private final static int MSG_DIE = 3; 2904 private final static int MSG_RESIZED = 4; 2905 private final static int MSG_RESIZED_REPORT = 5; 2906 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2907 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 2908 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2909 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2910 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2911 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2912 private final static int MSG_CHECK_FOCUS = 13; 2913 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2914 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2915 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2916 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2917 private final static int MSG_UPDATE_CONFIGURATION = 18; 2918 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2919 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2920 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2921 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2922 private final static int MSG_INVALIDATE_WORLD = 23; 2923 private final static int MSG_WINDOW_MOVED = 24; 2924 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2925 2926 final class ViewRootHandler extends Handler { 2927 @Override 2928 public String getMessageName(Message message) { 2929 switch (message.what) { 2930 case MSG_INVALIDATE: 2931 return "MSG_INVALIDATE"; 2932 case MSG_INVALIDATE_RECT: 2933 return "MSG_INVALIDATE_RECT"; 2934 case MSG_DIE: 2935 return "MSG_DIE"; 2936 case MSG_RESIZED: 2937 return "MSG_RESIZED"; 2938 case MSG_RESIZED_REPORT: 2939 return "MSG_RESIZED_REPORT"; 2940 case MSG_WINDOW_FOCUS_CHANGED: 2941 return "MSG_WINDOW_FOCUS_CHANGED"; 2942 case MSG_DISPATCH_INPUT_EVENT: 2943 return "MSG_DISPATCH_INPUT_EVENT"; 2944 case MSG_DISPATCH_APP_VISIBILITY: 2945 return "MSG_DISPATCH_APP_VISIBILITY"; 2946 case MSG_DISPATCH_GET_NEW_SURFACE: 2947 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2948 case MSG_DISPATCH_KEY_FROM_IME: 2949 return "MSG_DISPATCH_KEY_FROM_IME"; 2950 case MSG_FINISH_INPUT_CONNECTION: 2951 return "MSG_FINISH_INPUT_CONNECTION"; 2952 case MSG_CHECK_FOCUS: 2953 return "MSG_CHECK_FOCUS"; 2954 case MSG_CLOSE_SYSTEM_DIALOGS: 2955 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2956 case MSG_DISPATCH_DRAG_EVENT: 2957 return "MSG_DISPATCH_DRAG_EVENT"; 2958 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2959 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2960 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2961 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2962 case MSG_UPDATE_CONFIGURATION: 2963 return "MSG_UPDATE_CONFIGURATION"; 2964 case MSG_PROCESS_INPUT_EVENTS: 2965 return "MSG_PROCESS_INPUT_EVENTS"; 2966 case MSG_DISPATCH_SCREEN_STATE: 2967 return "MSG_DISPATCH_SCREEN_STATE"; 2968 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2969 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2970 case MSG_DISPATCH_DONE_ANIMATING: 2971 return "MSG_DISPATCH_DONE_ANIMATING"; 2972 case MSG_WINDOW_MOVED: 2973 return "MSG_WINDOW_MOVED"; 2974 case MSG_FLUSH_LAYER_UPDATES: 2975 return "MSG_FLUSH_LAYER_UPDATES"; 2976 } 2977 return super.getMessageName(message); 2978 } 2979 2980 @Override 2981 public void handleMessage(Message msg) { 2982 switch (msg.what) { 2983 case MSG_INVALIDATE: 2984 ((View) msg.obj).invalidate(); 2985 break; 2986 case MSG_INVALIDATE_RECT: 2987 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2988 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2989 info.recycle(); 2990 break; 2991 case MSG_PROCESS_INPUT_EVENTS: 2992 mProcessInputEventsScheduled = false; 2993 doProcessInputEvents(); 2994 break; 2995 case MSG_DISPATCH_APP_VISIBILITY: 2996 handleAppVisibility(msg.arg1 != 0); 2997 break; 2998 case MSG_DISPATCH_GET_NEW_SURFACE: 2999 handleGetNewSurface(); 3000 break; 3001 case MSG_RESIZED: { 3002 // Recycled in the fall through... 3003 SomeArgs args = (SomeArgs) msg.obj; 3004 if (mWinFrame.equals(args.arg1) 3005 && mPendingOverscanInsets.equals(args.arg5) 3006 && mPendingContentInsets.equals(args.arg2) 3007 && mPendingVisibleInsets.equals(args.arg3) 3008 && args.arg4 == null) { 3009 break; 3010 } 3011 } // fall through... 3012 case MSG_RESIZED_REPORT: 3013 if (mAdded) { 3014 SomeArgs args = (SomeArgs) msg.obj; 3015 3016 Configuration config = (Configuration) args.arg4; 3017 if (config != null) { 3018 updateConfiguration(config, false); 3019 } 3020 3021 mWinFrame.set((Rect) args.arg1); 3022 mPendingOverscanInsets.set((Rect) args.arg5); 3023 mPendingContentInsets.set((Rect) args.arg2); 3024 mPendingVisibleInsets.set((Rect) args.arg3); 3025 3026 args.recycle(); 3027 3028 if (msg.what == MSG_RESIZED_REPORT) { 3029 mReportNextDraw = true; 3030 } 3031 3032 if (mView != null) { 3033 forceLayout(mView); 3034 } 3035 3036 requestLayout(); 3037 } 3038 break; 3039 case MSG_WINDOW_MOVED: 3040 if (mAdded) { 3041 final int w = mWinFrame.width(); 3042 final int h = mWinFrame.height(); 3043 final int l = msg.arg1; 3044 final int t = msg.arg2; 3045 mWinFrame.left = l; 3046 mWinFrame.right = l + w; 3047 mWinFrame.top = t; 3048 mWinFrame.bottom = t + h; 3049 3050 if (mView != null) { 3051 forceLayout(mView); 3052 } 3053 requestLayout(); 3054 } 3055 break; 3056 case MSG_WINDOW_FOCUS_CHANGED: { 3057 if (mAdded) { 3058 boolean hasWindowFocus = msg.arg1 != 0; 3059 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3060 3061 profileRendering(hasWindowFocus); 3062 3063 if (hasWindowFocus) { 3064 boolean inTouchMode = msg.arg2 != 0; 3065 ensureTouchModeLocally(inTouchMode); 3066 3067 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3068 mFullRedrawNeeded = true; 3069 try { 3070 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3071 mWidth, mHeight, mHolder.getSurface()); 3072 } catch (Surface.OutOfResourcesException e) { 3073 Log.e(TAG, "OutOfResourcesException locking surface", e); 3074 try { 3075 if (!mWindowSession.outOfMemory(mWindow)) { 3076 Slog.w(TAG, "No processes killed for memory; killing self"); 3077 Process.killProcess(Process.myPid()); 3078 } 3079 } catch (RemoteException ex) { 3080 } 3081 // Retry in a bit. 3082 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3083 return; 3084 } 3085 } 3086 } 3087 3088 mLastWasImTarget = WindowManager.LayoutParams 3089 .mayUseInputMethod(mWindowAttributes.flags); 3090 3091 InputMethodManager imm = InputMethodManager.peekInstance(); 3092 if (mView != null) { 3093 if (hasWindowFocus && imm != null && mLastWasImTarget && 3094 !isInLocalFocusMode()) { 3095 imm.startGettingWindowFocus(mView); 3096 } 3097 mAttachInfo.mKeyDispatchState.reset(); 3098 mView.dispatchWindowFocusChanged(hasWindowFocus); 3099 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3100 } 3101 3102 // Note: must be done after the focus change callbacks, 3103 // so all of the view state is set up correctly. 3104 if (hasWindowFocus) { 3105 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3106 imm.onWindowFocus(mView, mView.findFocus(), 3107 mWindowAttributes.softInputMode, 3108 !mHasHadWindowFocus, mWindowAttributes.flags); 3109 } 3110 // Clear the forward bit. We can just do this directly, since 3111 // the window manager doesn't care about it. 3112 mWindowAttributes.softInputMode &= 3113 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3114 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3115 .softInputMode &= 3116 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3117 mHasHadWindowFocus = true; 3118 } 3119 3120 setAccessibilityFocus(null, null); 3121 3122 if (mView != null && mAccessibilityManager.isEnabled()) { 3123 if (hasWindowFocus) { 3124 mView.sendAccessibilityEvent( 3125 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3126 } 3127 } 3128 } 3129 } break; 3130 case MSG_DIE: 3131 doDie(); 3132 break; 3133 case MSG_DISPATCH_INPUT_EVENT: { 3134 InputEvent event = (InputEvent)msg.obj; 3135 enqueueInputEvent(event, null, 0, true); 3136 } break; 3137 case MSG_DISPATCH_KEY_FROM_IME: { 3138 if (LOCAL_LOGV) Log.v( 3139 TAG, "Dispatching key " 3140 + msg.obj + " from IME to " + mView); 3141 KeyEvent event = (KeyEvent)msg.obj; 3142 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3143 // The IME is trying to say this event is from the 3144 // system! Bad bad bad! 3145 //noinspection UnusedAssignment 3146 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3147 } 3148 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3149 } break; 3150 case MSG_FINISH_INPUT_CONNECTION: { 3151 InputMethodManager imm = InputMethodManager.peekInstance(); 3152 if (imm != null) { 3153 imm.reportFinishInputConnection((InputConnection)msg.obj); 3154 } 3155 } break; 3156 case MSG_CHECK_FOCUS: { 3157 InputMethodManager imm = InputMethodManager.peekInstance(); 3158 if (imm != null) { 3159 imm.checkFocus(); 3160 } 3161 } break; 3162 case MSG_CLOSE_SYSTEM_DIALOGS: { 3163 if (mView != null) { 3164 mView.onCloseSystemDialogs((String)msg.obj); 3165 } 3166 } break; 3167 case MSG_DISPATCH_DRAG_EVENT: 3168 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3169 DragEvent event = (DragEvent)msg.obj; 3170 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3171 handleDragEvent(event); 3172 } break; 3173 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3174 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3175 } break; 3176 case MSG_UPDATE_CONFIGURATION: { 3177 Configuration config = (Configuration)msg.obj; 3178 if (config.isOtherSeqNewer(mLastConfiguration)) { 3179 config = mLastConfiguration; 3180 } 3181 updateConfiguration(config, false); 3182 } break; 3183 case MSG_DISPATCH_SCREEN_STATE: { 3184 if (mView != null) { 3185 handleScreenStateChange(msg.arg1 == 1); 3186 } 3187 } break; 3188 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3189 setAccessibilityFocus(null, null); 3190 } break; 3191 case MSG_DISPATCH_DONE_ANIMATING: { 3192 handleDispatchDoneAnimating(); 3193 } break; 3194 case MSG_INVALIDATE_WORLD: { 3195 if (mView != null) { 3196 invalidateWorld(mView); 3197 } 3198 } break; 3199 case MSG_FLUSH_LAYER_UPDATES: { 3200 flushHardwareLayerUpdates(); 3201 } break; 3202 } 3203 } 3204 } 3205 3206 final ViewRootHandler mHandler = new ViewRootHandler(); 3207 3208 /** 3209 * Something in the current window tells us we need to change the touch mode. For 3210 * example, we are not in touch mode, and the user touches the screen. 3211 * 3212 * If the touch mode has changed, tell the window manager, and handle it locally. 3213 * 3214 * @param inTouchMode Whether we want to be in touch mode. 3215 * @return True if the touch mode changed and focus changed was changed as a result 3216 */ 3217 boolean ensureTouchMode(boolean inTouchMode) { 3218 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3219 + "touch mode is " + mAttachInfo.mInTouchMode); 3220 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3221 3222 // tell the window manager 3223 try { 3224 if (!isInLocalFocusMode()) { 3225 mWindowSession.setInTouchMode(inTouchMode); 3226 } 3227 } catch (RemoteException e) { 3228 throw new RuntimeException(e); 3229 } 3230 3231 // handle the change 3232 return ensureTouchModeLocally(inTouchMode); 3233 } 3234 3235 /** 3236 * Ensure that the touch mode for this window is set, and if it is changing, 3237 * take the appropriate action. 3238 * @param inTouchMode Whether we want to be in touch mode. 3239 * @return True if the touch mode changed and focus changed was changed as a result 3240 */ 3241 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3242 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3243 + "touch mode is " + mAttachInfo.mInTouchMode); 3244 3245 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3246 3247 mAttachInfo.mInTouchMode = inTouchMode; 3248 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3249 3250 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3251 } 3252 3253 private boolean enterTouchMode() { 3254 if (mView != null && mView.hasFocus()) { 3255 // note: not relying on mFocusedView here because this could 3256 // be when the window is first being added, and mFocused isn't 3257 // set yet. 3258 final View focused = mView.findFocus(); 3259 if (focused != null && !focused.isFocusableInTouchMode()) { 3260 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3261 if (ancestorToTakeFocus != null) { 3262 // there is an ancestor that wants focus after its 3263 // descendants that is focusable in touch mode.. give it 3264 // focus 3265 return ancestorToTakeFocus.requestFocus(); 3266 } else { 3267 // There's nothing to focus. Clear and propagate through the 3268 // hierarchy, but don't attempt to place new focus. 3269 focused.clearFocusInternal(true, false); 3270 return true; 3271 } 3272 } 3273 } 3274 return false; 3275 } 3276 3277 /** 3278 * Find an ancestor of focused that wants focus after its descendants and is 3279 * focusable in touch mode. 3280 * @param focused The currently focused view. 3281 * @return An appropriate view, or null if no such view exists. 3282 */ 3283 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3284 ViewParent parent = focused.getParent(); 3285 while (parent instanceof ViewGroup) { 3286 final ViewGroup vgParent = (ViewGroup) parent; 3287 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3288 && vgParent.isFocusableInTouchMode()) { 3289 return vgParent; 3290 } 3291 if (vgParent.isRootNamespace()) { 3292 return null; 3293 } else { 3294 parent = vgParent.getParent(); 3295 } 3296 } 3297 return null; 3298 } 3299 3300 private boolean leaveTouchMode() { 3301 if (mView != null) { 3302 if (mView.hasFocus()) { 3303 View focusedView = mView.findFocus(); 3304 if (!(focusedView instanceof ViewGroup)) { 3305 // some view has focus, let it keep it 3306 return false; 3307 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3308 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3309 // some view group has focus, and doesn't prefer its children 3310 // over itself for focus, so let them keep it. 3311 return false; 3312 } 3313 } 3314 3315 // find the best view to give focus to in this brave new non-touch-mode 3316 // world 3317 final View focused = focusSearch(null, View.FOCUS_DOWN); 3318 if (focused != null) { 3319 return focused.requestFocus(View.FOCUS_DOWN); 3320 } 3321 } 3322 return false; 3323 } 3324 3325 /** 3326 * Base class for implementing a stage in the chain of responsibility 3327 * for processing input events. 3328 * <p> 3329 * Events are delivered to the stage by the {@link #deliver} method. The stage 3330 * then has the choice of finishing the event or forwarding it to the next stage. 3331 * </p> 3332 */ 3333 abstract class InputStage { 3334 private final InputStage mNext; 3335 3336 protected static final int FORWARD = 0; 3337 protected static final int FINISH_HANDLED = 1; 3338 protected static final int FINISH_NOT_HANDLED = 2; 3339 3340 /** 3341 * Creates an input stage. 3342 * @param next The next stage to which events should be forwarded. 3343 */ 3344 public InputStage(InputStage next) { 3345 mNext = next; 3346 } 3347 3348 /** 3349 * Delivers an event to be processed. 3350 */ 3351 public final void deliver(QueuedInputEvent q) { 3352 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3353 forward(q); 3354 } else if (mView == null || !mAdded) { 3355 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3356 finish(q, false); 3357 } else if (!mAttachInfo.mHasWindowFocus && 3358 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3359 !isTerminalInputEvent(q.mEvent)) { 3360 // If this is a focused event and the window doesn't currently have input focus, 3361 // then drop this event. This could be an event that came back from the previous 3362 // stage but the window has lost focus in the meantime. 3363 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3364 finish(q, false); 3365 } else { 3366 apply(q, onProcess(q)); 3367 } 3368 } 3369 3370 /** 3371 * Marks the the input event as finished then forwards it to the next stage. 3372 */ 3373 protected void finish(QueuedInputEvent q, boolean handled) { 3374 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3375 if (handled) { 3376 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3377 } 3378 forward(q); 3379 } 3380 3381 /** 3382 * Forwards the event to the next stage. 3383 */ 3384 protected void forward(QueuedInputEvent q) { 3385 onDeliverToNext(q); 3386 } 3387 3388 /** 3389 * Applies a result code from {@link #onProcess} to the specified event. 3390 */ 3391 protected void apply(QueuedInputEvent q, int result) { 3392 if (result == FORWARD) { 3393 forward(q); 3394 } else if (result == FINISH_HANDLED) { 3395 finish(q, true); 3396 } else if (result == FINISH_NOT_HANDLED) { 3397 finish(q, false); 3398 } else { 3399 throw new IllegalArgumentException("Invalid result: " + result); 3400 } 3401 } 3402 3403 /** 3404 * Called when an event is ready to be processed. 3405 * @return A result code indicating how the event was handled. 3406 */ 3407 protected int onProcess(QueuedInputEvent q) { 3408 return FORWARD; 3409 } 3410 3411 /** 3412 * Called when an event is being delivered to the next stage. 3413 */ 3414 protected void onDeliverToNext(QueuedInputEvent q) { 3415 if (mNext != null) { 3416 mNext.deliver(q); 3417 } else { 3418 finishInputEvent(q); 3419 } 3420 } 3421 } 3422 3423 /** 3424 * Base class for implementing an input pipeline stage that supports 3425 * asynchronous and out-of-order processing of input events. 3426 * <p> 3427 * In addition to what a normal input stage can do, an asynchronous 3428 * input stage may also defer an input event that has been delivered to it 3429 * and finish or forward it later. 3430 * </p> 3431 */ 3432 abstract class AsyncInputStage extends InputStage { 3433 private final String mTraceCounter; 3434 3435 private QueuedInputEvent mQueueHead; 3436 private QueuedInputEvent mQueueTail; 3437 private int mQueueLength; 3438 3439 protected static final int DEFER = 3; 3440 3441 /** 3442 * Creates an asynchronous input stage. 3443 * @param next The next stage to which events should be forwarded. 3444 * @param traceCounter The name of a counter to record the size of 3445 * the queue of pending events. 3446 */ 3447 public AsyncInputStage(InputStage next, String traceCounter) { 3448 super(next); 3449 mTraceCounter = traceCounter; 3450 } 3451 3452 /** 3453 * Marks the event as deferred, which is to say that it will be handled 3454 * asynchronously. The caller is responsible for calling {@link #forward} 3455 * or {@link #finish} later when it is done handling the event. 3456 */ 3457 protected void defer(QueuedInputEvent q) { 3458 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3459 enqueue(q); 3460 } 3461 3462 @Override 3463 protected void forward(QueuedInputEvent q) { 3464 // Clear the deferred flag. 3465 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3466 3467 // Fast path if the queue is empty. 3468 QueuedInputEvent curr = mQueueHead; 3469 if (curr == null) { 3470 super.forward(q); 3471 return; 3472 } 3473 3474 // Determine whether the event must be serialized behind any others 3475 // before it can be delivered to the next stage. This is done because 3476 // deferred events might be handled out of order by the stage. 3477 final int deviceId = q.mEvent.getDeviceId(); 3478 QueuedInputEvent prev = null; 3479 boolean blocked = false; 3480 while (curr != null && curr != q) { 3481 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3482 blocked = true; 3483 } 3484 prev = curr; 3485 curr = curr.mNext; 3486 } 3487 3488 // If the event is blocked, then leave it in the queue to be delivered later. 3489 // Note that the event might not yet be in the queue if it was not previously 3490 // deferred so we will enqueue it if needed. 3491 if (blocked) { 3492 if (curr == null) { 3493 enqueue(q); 3494 } 3495 return; 3496 } 3497 3498 // The event is not blocked. Deliver it immediately. 3499 if (curr != null) { 3500 curr = curr.mNext; 3501 dequeue(q, prev); 3502 } 3503 super.forward(q); 3504 3505 // Dequeuing this event may have unblocked successors. Deliver them. 3506 while (curr != null) { 3507 if (deviceId == curr.mEvent.getDeviceId()) { 3508 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3509 break; 3510 } 3511 QueuedInputEvent next = curr.mNext; 3512 dequeue(curr, prev); 3513 super.forward(curr); 3514 curr = next; 3515 } else { 3516 prev = curr; 3517 curr = curr.mNext; 3518 } 3519 } 3520 } 3521 3522 @Override 3523 protected void apply(QueuedInputEvent q, int result) { 3524 if (result == DEFER) { 3525 defer(q); 3526 } else { 3527 super.apply(q, result); 3528 } 3529 } 3530 3531 private void enqueue(QueuedInputEvent q) { 3532 if (mQueueTail == null) { 3533 mQueueHead = q; 3534 mQueueTail = q; 3535 } else { 3536 mQueueTail.mNext = q; 3537 mQueueTail = q; 3538 } 3539 3540 mQueueLength += 1; 3541 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3542 } 3543 3544 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3545 if (prev == null) { 3546 mQueueHead = q.mNext; 3547 } else { 3548 prev.mNext = q.mNext; 3549 } 3550 if (mQueueTail == q) { 3551 mQueueTail = prev; 3552 } 3553 q.mNext = null; 3554 3555 mQueueLength -= 1; 3556 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3557 } 3558 } 3559 3560 /** 3561 * Delivers pre-ime input events to a native activity. 3562 * Does not support pointer events. 3563 */ 3564 final class NativePreImeInputStage extends AsyncInputStage 3565 implements InputQueue.FinishedInputEventCallback { 3566 public NativePreImeInputStage(InputStage next, String traceCounter) { 3567 super(next, traceCounter); 3568 } 3569 3570 @Override 3571 protected int onProcess(QueuedInputEvent q) { 3572 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3573 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3574 return DEFER; 3575 } 3576 return FORWARD; 3577 } 3578 3579 @Override 3580 public void onFinishedInputEvent(Object token, boolean handled) { 3581 QueuedInputEvent q = (QueuedInputEvent)token; 3582 if (handled) { 3583 finish(q, true); 3584 return; 3585 } 3586 forward(q); 3587 } 3588 } 3589 3590 /** 3591 * Delivers pre-ime input events to the view hierarchy. 3592 * Does not support pointer events. 3593 */ 3594 final class ViewPreImeInputStage extends InputStage { 3595 public ViewPreImeInputStage(InputStage next) { 3596 super(next); 3597 } 3598 3599 @Override 3600 protected int onProcess(QueuedInputEvent q) { 3601 if (q.mEvent instanceof KeyEvent) { 3602 return processKeyEvent(q); 3603 } 3604 return FORWARD; 3605 } 3606 3607 private int processKeyEvent(QueuedInputEvent q) { 3608 final KeyEvent event = (KeyEvent)q.mEvent; 3609 if (mView.dispatchKeyEventPreIme(event)) { 3610 return FINISH_HANDLED; 3611 } 3612 return FORWARD; 3613 } 3614 } 3615 3616 /** 3617 * Delivers input events to the ime. 3618 * Does not support pointer events. 3619 */ 3620 final class ImeInputStage extends AsyncInputStage 3621 implements InputMethodManager.FinishedInputEventCallback { 3622 public ImeInputStage(InputStage next, String traceCounter) { 3623 super(next, traceCounter); 3624 } 3625 3626 @Override 3627 protected int onProcess(QueuedInputEvent q) { 3628 if (mLastWasImTarget && !isInLocalFocusMode()) { 3629 InputMethodManager imm = InputMethodManager.peekInstance(); 3630 if (imm != null) { 3631 final InputEvent event = q.mEvent; 3632 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3633 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3634 if (result == InputMethodManager.DISPATCH_HANDLED) { 3635 return FINISH_HANDLED; 3636 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3637 return FINISH_NOT_HANDLED; 3638 } else { 3639 return DEFER; // callback will be invoked later 3640 } 3641 } 3642 } 3643 return FORWARD; 3644 } 3645 3646 @Override 3647 public void onFinishedInputEvent(Object token, boolean handled) { 3648 QueuedInputEvent q = (QueuedInputEvent)token; 3649 if (handled) { 3650 finish(q, true); 3651 return; 3652 } 3653 forward(q); 3654 } 3655 } 3656 3657 /** 3658 * Performs early processing of post-ime input events. 3659 */ 3660 final class EarlyPostImeInputStage extends InputStage { 3661 public EarlyPostImeInputStage(InputStage next) { 3662 super(next); 3663 } 3664 3665 @Override 3666 protected int onProcess(QueuedInputEvent q) { 3667 if (q.mEvent instanceof KeyEvent) { 3668 return processKeyEvent(q); 3669 } else { 3670 final int source = q.mEvent.getSource(); 3671 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3672 return processPointerEvent(q); 3673 } 3674 } 3675 return FORWARD; 3676 } 3677 3678 private int processKeyEvent(QueuedInputEvent q) { 3679 final KeyEvent event = (KeyEvent)q.mEvent; 3680 3681 // If the key's purpose is to exit touch mode then we consume it 3682 // and consider it handled. 3683 if (checkForLeavingTouchModeAndConsume(event)) { 3684 return FINISH_HANDLED; 3685 } 3686 3687 // Make sure the fallback event policy sees all keys that will be 3688 // delivered to the view hierarchy. 3689 mFallbackEventHandler.preDispatchKeyEvent(event); 3690 return FORWARD; 3691 } 3692 3693 private int processPointerEvent(QueuedInputEvent q) { 3694 final MotionEvent event = (MotionEvent)q.mEvent; 3695 3696 // Translate the pointer event for compatibility, if needed. 3697 if (mTranslator != null) { 3698 mTranslator.translateEventInScreenToAppWindow(event); 3699 } 3700 3701 // Enter touch mode on down or scroll. 3702 final int action = event.getAction(); 3703 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3704 ensureTouchMode(true); 3705 } 3706 3707 // Offset the scroll position. 3708 if (mCurScrollY != 0) { 3709 event.offsetLocation(0, mCurScrollY); 3710 } 3711 3712 // Remember the touch position for possible drag-initiation. 3713 if (event.isTouchEvent()) { 3714 mLastTouchPoint.x = event.getRawX(); 3715 mLastTouchPoint.y = event.getRawY(); 3716 } 3717 return FORWARD; 3718 } 3719 } 3720 3721 /** 3722 * Delivers post-ime input events to a native activity. 3723 */ 3724 final class NativePostImeInputStage extends AsyncInputStage 3725 implements InputQueue.FinishedInputEventCallback { 3726 public NativePostImeInputStage(InputStage next, String traceCounter) { 3727 super(next, traceCounter); 3728 } 3729 3730 @Override 3731 protected int onProcess(QueuedInputEvent q) { 3732 if (mInputQueue != null) { 3733 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3734 return DEFER; 3735 } 3736 return FORWARD; 3737 } 3738 3739 @Override 3740 public void onFinishedInputEvent(Object token, boolean handled) { 3741 QueuedInputEvent q = (QueuedInputEvent)token; 3742 if (handled) { 3743 finish(q, true); 3744 return; 3745 } 3746 forward(q); 3747 } 3748 } 3749 3750 /** 3751 * Delivers post-ime input events to the view hierarchy. 3752 */ 3753 final class ViewPostImeInputStage extends InputStage { 3754 public ViewPostImeInputStage(InputStage next) { 3755 super(next); 3756 } 3757 3758 @Override 3759 protected int onProcess(QueuedInputEvent q) { 3760 if (q.mEvent instanceof KeyEvent) { 3761 return processKeyEvent(q); 3762 } else { 3763 final int source = q.mEvent.getSource(); 3764 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3765 return processPointerEvent(q); 3766 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3767 return processTrackballEvent(q); 3768 } else { 3769 return processGenericMotionEvent(q); 3770 } 3771 } 3772 } 3773 3774 private int processKeyEvent(QueuedInputEvent q) { 3775 final KeyEvent event = (KeyEvent)q.mEvent; 3776 3777 // The synthetic stage occasionally needs to know about keys in order to debounce taps 3778 mSyntheticInputStage.notifyKeyEvent(event); 3779 3780 // Deliver the key to the view hierarchy. 3781 if (mView.dispatchKeyEvent(event)) { 3782 return FINISH_HANDLED; 3783 } 3784 3785 // If the Control modifier is held, try to interpret the key as a shortcut. 3786 if (event.getAction() == KeyEvent.ACTION_DOWN 3787 && event.isCtrlPressed() 3788 && event.getRepeatCount() == 0 3789 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3790 if (mView.dispatchKeyShortcutEvent(event)) { 3791 return FINISH_HANDLED; 3792 } 3793 } 3794 3795 // Apply the fallback event policy. 3796 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3797 return FINISH_HANDLED; 3798 } 3799 3800 // Handle automatic focus changes. 3801 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3802 int direction = 0; 3803 switch (event.getKeyCode()) { 3804 case KeyEvent.KEYCODE_DPAD_LEFT: 3805 if (event.hasNoModifiers()) { 3806 direction = View.FOCUS_LEFT; 3807 } 3808 break; 3809 case KeyEvent.KEYCODE_DPAD_RIGHT: 3810 if (event.hasNoModifiers()) { 3811 direction = View.FOCUS_RIGHT; 3812 } 3813 break; 3814 case KeyEvent.KEYCODE_DPAD_UP: 3815 if (event.hasNoModifiers()) { 3816 direction = View.FOCUS_UP; 3817 } 3818 break; 3819 case KeyEvent.KEYCODE_DPAD_DOWN: 3820 if (event.hasNoModifiers()) { 3821 direction = View.FOCUS_DOWN; 3822 } 3823 break; 3824 case KeyEvent.KEYCODE_TAB: 3825 if (event.hasNoModifiers()) { 3826 direction = View.FOCUS_FORWARD; 3827 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3828 direction = View.FOCUS_BACKWARD; 3829 } 3830 break; 3831 } 3832 if (direction != 0) { 3833 View focused = mView.findFocus(); 3834 if (focused != null) { 3835 View v = focused.focusSearch(direction); 3836 if (v != null && v != focused) { 3837 // do the math the get the interesting rect 3838 // of previous focused into the coord system of 3839 // newly focused view 3840 focused.getFocusedRect(mTempRect); 3841 if (mView instanceof ViewGroup) { 3842 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3843 focused, mTempRect); 3844 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3845 v, mTempRect); 3846 } 3847 if (v.requestFocus(direction, mTempRect)) { 3848 playSoundEffect(SoundEffectConstants 3849 .getContantForFocusDirection(direction)); 3850 return FINISH_HANDLED; 3851 } 3852 } 3853 3854 // Give the focused view a last chance to handle the dpad key. 3855 if (mView.dispatchUnhandledMove(focused, direction)) { 3856 return FINISH_HANDLED; 3857 } 3858 } else { 3859 // find the best view to give focus to in this non-touch-mode with no-focus 3860 View v = focusSearch(null, direction); 3861 if (v != null && v.requestFocus(direction)) { 3862 return FINISH_HANDLED; 3863 } 3864 } 3865 } 3866 } 3867 return FORWARD; 3868 } 3869 3870 private int processPointerEvent(QueuedInputEvent q) { 3871 final MotionEvent event = (MotionEvent)q.mEvent; 3872 3873 if (mView.dispatchPointerEvent(event)) { 3874 return FINISH_HANDLED; 3875 } 3876 return FORWARD; 3877 } 3878 3879 private int processTrackballEvent(QueuedInputEvent q) { 3880 final MotionEvent event = (MotionEvent)q.mEvent; 3881 3882 if (mView.dispatchTrackballEvent(event)) { 3883 return FINISH_HANDLED; 3884 } 3885 return FORWARD; 3886 } 3887 3888 private int processGenericMotionEvent(QueuedInputEvent q) { 3889 final MotionEvent event = (MotionEvent)q.mEvent; 3890 3891 // Deliver the event to the view. 3892 if (mView.dispatchGenericMotionEvent(event)) { 3893 return FINISH_HANDLED; 3894 } 3895 return FORWARD; 3896 } 3897 } 3898 3899 /** 3900 * Performs synthesis of new input events from unhandled input events. 3901 */ 3902 final class SyntheticInputStage extends InputStage { 3903 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3904 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3905 private final SyntheticTouchNavigationHandler mTouchNavigation = 3906 new SyntheticTouchNavigationHandler(); 3907 3908 public SyntheticInputStage() { 3909 super(null); 3910 } 3911 3912 @Override 3913 protected int onProcess(QueuedInputEvent q) { 3914 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3915 if (q.mEvent instanceof MotionEvent) { 3916 final MotionEvent event = (MotionEvent)q.mEvent; 3917 final int source = event.getSource(); 3918 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3919 mTrackball.process(event); 3920 return FINISH_HANDLED; 3921 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3922 mJoystick.process(event); 3923 return FINISH_HANDLED; 3924 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3925 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3926 mTouchNavigation.process(event); 3927 return FINISH_HANDLED; 3928 } 3929 } 3930 return FORWARD; 3931 } 3932 3933 @Override 3934 protected void onDeliverToNext(QueuedInputEvent q) { 3935 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 3936 // Cancel related synthetic events if any prior stage has handled the event. 3937 if (q.mEvent instanceof MotionEvent) { 3938 final MotionEvent event = (MotionEvent)q.mEvent; 3939 final int source = event.getSource(); 3940 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3941 mTrackball.cancel(event); 3942 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3943 mJoystick.cancel(event); 3944 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3945 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3946 mTouchNavigation.cancel(event); 3947 } 3948 } 3949 } 3950 super.onDeliverToNext(q); 3951 } 3952 3953 public void notifyKeyEvent(KeyEvent e) { 3954 mTouchNavigation.notifyKeyEvent(e); 3955 } 3956 } 3957 3958 /** 3959 * Creates dpad events from unhandled trackball movements. 3960 */ 3961 final class SyntheticTrackballHandler { 3962 private final TrackballAxis mX = new TrackballAxis(); 3963 private final TrackballAxis mY = new TrackballAxis(); 3964 private long mLastTime; 3965 3966 public void process(MotionEvent event) { 3967 // Translate the trackball event into DPAD keys and try to deliver those. 3968 long curTime = SystemClock.uptimeMillis(); 3969 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 3970 // It has been too long since the last movement, 3971 // so restart at the beginning. 3972 mX.reset(0); 3973 mY.reset(0); 3974 mLastTime = curTime; 3975 } 3976 3977 final int action = event.getAction(); 3978 final int metaState = event.getMetaState(); 3979 switch (action) { 3980 case MotionEvent.ACTION_DOWN: 3981 mX.reset(2); 3982 mY.reset(2); 3983 enqueueInputEvent(new KeyEvent(curTime, curTime, 3984 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3985 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3986 InputDevice.SOURCE_KEYBOARD)); 3987 break; 3988 case MotionEvent.ACTION_UP: 3989 mX.reset(2); 3990 mY.reset(2); 3991 enqueueInputEvent(new KeyEvent(curTime, curTime, 3992 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3993 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3994 InputDevice.SOURCE_KEYBOARD)); 3995 break; 3996 } 3997 3998 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 3999 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4000 + " move=" + event.getX() 4001 + " / Y=" + mY.position + " step=" 4002 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4003 + " move=" + event.getY()); 4004 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4005 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4006 4007 // Generate DPAD events based on the trackball movement. 4008 // We pick the axis that has moved the most as the direction of 4009 // the DPAD. When we generate DPAD events for one axis, then the 4010 // other axis is reset -- we don't want to perform DPAD jumps due 4011 // to slight movements in the trackball when making major movements 4012 // along the other axis. 4013 int keycode = 0; 4014 int movement = 0; 4015 float accel = 1; 4016 if (xOff > yOff) { 4017 movement = mX.generate(); 4018 if (movement != 0) { 4019 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4020 : KeyEvent.KEYCODE_DPAD_LEFT; 4021 accel = mX.acceleration; 4022 mY.reset(2); 4023 } 4024 } else if (yOff > 0) { 4025 movement = mY.generate(); 4026 if (movement != 0) { 4027 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4028 : KeyEvent.KEYCODE_DPAD_UP; 4029 accel = mY.acceleration; 4030 mX.reset(2); 4031 } 4032 } 4033 4034 if (keycode != 0) { 4035 if (movement < 0) movement = -movement; 4036 int accelMovement = (int)(movement * accel); 4037 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4038 + " accelMovement=" + accelMovement 4039 + " accel=" + accel); 4040 if (accelMovement > movement) { 4041 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4042 + keycode); 4043 movement--; 4044 int repeatCount = accelMovement - movement; 4045 enqueueInputEvent(new KeyEvent(curTime, curTime, 4046 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4047 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4048 InputDevice.SOURCE_KEYBOARD)); 4049 } 4050 while (movement > 0) { 4051 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4052 + keycode); 4053 movement--; 4054 curTime = SystemClock.uptimeMillis(); 4055 enqueueInputEvent(new KeyEvent(curTime, curTime, 4056 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4057 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4058 InputDevice.SOURCE_KEYBOARD)); 4059 enqueueInputEvent(new KeyEvent(curTime, curTime, 4060 KeyEvent.ACTION_UP, keycode, 0, metaState, 4061 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4062 InputDevice.SOURCE_KEYBOARD)); 4063 } 4064 mLastTime = curTime; 4065 } 4066 } 4067 4068 public void cancel(MotionEvent event) { 4069 mLastTime = Integer.MIN_VALUE; 4070 4071 // If we reach this, we consumed a trackball event. 4072 // Because we will not translate the trackball event into a key event, 4073 // touch mode will not exit, so we exit touch mode here. 4074 if (mView != null && mAdded) { 4075 ensureTouchMode(false); 4076 } 4077 } 4078 } 4079 4080 /** 4081 * Maintains state information for a single trackball axis, generating 4082 * discrete (DPAD) movements based on raw trackball motion. 4083 */ 4084 static final class TrackballAxis { 4085 /** 4086 * The maximum amount of acceleration we will apply. 4087 */ 4088 static final float MAX_ACCELERATION = 20; 4089 4090 /** 4091 * The maximum amount of time (in milliseconds) between events in order 4092 * for us to consider the user to be doing fast trackball movements, 4093 * and thus apply an acceleration. 4094 */ 4095 static final long FAST_MOVE_TIME = 150; 4096 4097 /** 4098 * Scaling factor to the time (in milliseconds) between events to how 4099 * much to multiple/divide the current acceleration. When movement 4100 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4101 * FAST_MOVE_TIME it divides it. 4102 */ 4103 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4104 4105 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4106 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4107 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4108 4109 float position; 4110 float acceleration = 1; 4111 long lastMoveTime = 0; 4112 int step; 4113 int dir; 4114 int nonAccelMovement; 4115 4116 void reset(int _step) { 4117 position = 0; 4118 acceleration = 1; 4119 lastMoveTime = 0; 4120 step = _step; 4121 dir = 0; 4122 } 4123 4124 /** 4125 * Add trackball movement into the state. If the direction of movement 4126 * has been reversed, the state is reset before adding the 4127 * movement (so that you don't have to compensate for any previously 4128 * collected movement before see the result of the movement in the 4129 * new direction). 4130 * 4131 * @return Returns the absolute value of the amount of movement 4132 * collected so far. 4133 */ 4134 float collect(float off, long time, String axis) { 4135 long normTime; 4136 if (off > 0) { 4137 normTime = (long)(off * FAST_MOVE_TIME); 4138 if (dir < 0) { 4139 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4140 position = 0; 4141 step = 0; 4142 acceleration = 1; 4143 lastMoveTime = 0; 4144 } 4145 dir = 1; 4146 } else if (off < 0) { 4147 normTime = (long)((-off) * FAST_MOVE_TIME); 4148 if (dir > 0) { 4149 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4150 position = 0; 4151 step = 0; 4152 acceleration = 1; 4153 lastMoveTime = 0; 4154 } 4155 dir = -1; 4156 } else { 4157 normTime = 0; 4158 } 4159 4160 // The number of milliseconds between each movement that is 4161 // considered "normal" and will not result in any acceleration 4162 // or deceleration, scaled by the offset we have here. 4163 if (normTime > 0) { 4164 long delta = time - lastMoveTime; 4165 lastMoveTime = time; 4166 float acc = acceleration; 4167 if (delta < normTime) { 4168 // The user is scrolling rapidly, so increase acceleration. 4169 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4170 if (scale > 1) acc *= scale; 4171 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4172 + off + " normTime=" + normTime + " delta=" + delta 4173 + " scale=" + scale + " acc=" + acc); 4174 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4175 } else { 4176 // The user is scrolling slowly, so decrease acceleration. 4177 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4178 if (scale > 1) acc /= scale; 4179 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4180 + off + " normTime=" + normTime + " delta=" + delta 4181 + " scale=" + scale + " acc=" + acc); 4182 acceleration = acc > 1 ? acc : 1; 4183 } 4184 } 4185 position += off; 4186 return Math.abs(position); 4187 } 4188 4189 /** 4190 * Generate the number of discrete movement events appropriate for 4191 * the currently collected trackball movement. 4192 * 4193 * @return Returns the number of discrete movements, either positive 4194 * or negative, or 0 if there is not enough trackball movement yet 4195 * for a discrete movement. 4196 */ 4197 int generate() { 4198 int movement = 0; 4199 nonAccelMovement = 0; 4200 do { 4201 final int dir = position >= 0 ? 1 : -1; 4202 switch (step) { 4203 // If we are going to execute the first step, then we want 4204 // to do this as soon as possible instead of waiting for 4205 // a full movement, in order to make things look responsive. 4206 case 0: 4207 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4208 return movement; 4209 } 4210 movement += dir; 4211 nonAccelMovement += dir; 4212 step = 1; 4213 break; 4214 // If we have generated the first movement, then we need 4215 // to wait for the second complete trackball motion before 4216 // generating the second discrete movement. 4217 case 1: 4218 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4219 return movement; 4220 } 4221 movement += dir; 4222 nonAccelMovement += dir; 4223 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4224 step = 2; 4225 break; 4226 // After the first two, we generate discrete movements 4227 // consistently with the trackball, applying an acceleration 4228 // if the trackball is moving quickly. This is a simple 4229 // acceleration on top of what we already compute based 4230 // on how quickly the wheel is being turned, to apply 4231 // a longer increasing acceleration to continuous movement 4232 // in one direction. 4233 default: 4234 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4235 return movement; 4236 } 4237 movement += dir; 4238 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4239 float acc = acceleration; 4240 acc *= 1.1f; 4241 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4242 break; 4243 } 4244 } while (true); 4245 } 4246 } 4247 4248 /** 4249 * Creates dpad events from unhandled joystick movements. 4250 */ 4251 final class SyntheticJoystickHandler extends Handler { 4252 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4253 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4254 4255 private int mLastXDirection; 4256 private int mLastYDirection; 4257 private int mLastXKeyCode; 4258 private int mLastYKeyCode; 4259 4260 public SyntheticJoystickHandler() { 4261 super(true); 4262 } 4263 4264 @Override 4265 public void handleMessage(Message msg) { 4266 switch (msg.what) { 4267 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4268 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4269 KeyEvent oldEvent = (KeyEvent)msg.obj; 4270 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4271 SystemClock.uptimeMillis(), 4272 oldEvent.getRepeatCount() + 1); 4273 if (mAttachInfo.mHasWindowFocus) { 4274 enqueueInputEvent(e); 4275 Message m = obtainMessage(msg.what, e); 4276 m.setAsynchronous(true); 4277 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4278 } 4279 } break; 4280 } 4281 } 4282 4283 public void process(MotionEvent event) { 4284 update(event, true); 4285 } 4286 4287 public void cancel(MotionEvent event) { 4288 update(event, false); 4289 } 4290 4291 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4292 final long time = event.getEventTime(); 4293 final int metaState = event.getMetaState(); 4294 final int deviceId = event.getDeviceId(); 4295 final int source = event.getSource(); 4296 4297 int xDirection = joystickAxisValueToDirection( 4298 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4299 if (xDirection == 0) { 4300 xDirection = joystickAxisValueToDirection(event.getX()); 4301 } 4302 4303 int yDirection = joystickAxisValueToDirection( 4304 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4305 if (yDirection == 0) { 4306 yDirection = joystickAxisValueToDirection(event.getY()); 4307 } 4308 4309 if (xDirection != mLastXDirection) { 4310 if (mLastXKeyCode != 0) { 4311 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4312 enqueueInputEvent(new KeyEvent(time, time, 4313 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4314 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4315 mLastXKeyCode = 0; 4316 } 4317 4318 mLastXDirection = xDirection; 4319 4320 if (xDirection != 0 && synthesizeNewKeys) { 4321 mLastXKeyCode = xDirection > 0 4322 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4323 final KeyEvent e = new KeyEvent(time, time, 4324 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4325 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4326 enqueueInputEvent(e); 4327 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4328 m.setAsynchronous(true); 4329 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4330 } 4331 } 4332 4333 if (yDirection != mLastYDirection) { 4334 if (mLastYKeyCode != 0) { 4335 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4336 enqueueInputEvent(new KeyEvent(time, time, 4337 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4338 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4339 mLastYKeyCode = 0; 4340 } 4341 4342 mLastYDirection = yDirection; 4343 4344 if (yDirection != 0 && synthesizeNewKeys) { 4345 mLastYKeyCode = yDirection > 0 4346 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4347 final KeyEvent e = new KeyEvent(time, time, 4348 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4349 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4350 enqueueInputEvent(e); 4351 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4352 m.setAsynchronous(true); 4353 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4354 } 4355 } 4356 } 4357 4358 private int joystickAxisValueToDirection(float value) { 4359 if (value >= 0.5f) { 4360 return 1; 4361 } else if (value <= -0.5f) { 4362 return -1; 4363 } else { 4364 return 0; 4365 } 4366 } 4367 } 4368 4369 /** 4370 * Creates dpad events from unhandled touch navigation movements. 4371 */ 4372 final class SyntheticTouchNavigationHandler extends Handler { 4373 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4374 private static final boolean LOCAL_DEBUG = false; 4375 4376 // Assumed nominal width and height in millimeters of a touch navigation pad, 4377 // if no resolution information is available from the input system. 4378 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4379 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4380 4381 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4382 4383 // Tap timeout in milliseconds. 4384 private static final int TAP_TIMEOUT = 250; 4385 4386 // Debounce timeout for touch nav devices with a button under their pad, in milliseconds 4387 private static final int DEBOUNCE_TIME = 250; 4388 4389 // The maximum distance traveled for a gesture to be considered a tap in millimeters. 4390 private static final int TAP_SLOP_MILLIMETERS = 5; 4391 4392 // The nominal distance traveled to move by one unit. 4393 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4394 4395 // Minimum and maximum fling velocity in ticks per second. 4396 // The minimum velocity should be set such that we perform enough ticks per 4397 // second that the fling appears to be fluid. For example, if we set the minimum 4398 // to 2 ticks per second, then there may be up to half a second delay between the next 4399 // to last and last ticks which is noticeably discrete and jerky. This value should 4400 // probably not be set to anything less than about 4. 4401 // If fling accuracy is a problem then consider tuning the tick distance instead. 4402 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4403 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4404 4405 // Fling velocity decay factor applied after each new key is emitted. 4406 // This parameter controls the deceleration and overall duration of the fling. 4407 // The fling stops automatically when its velocity drops below the minimum 4408 // fling velocity defined above. 4409 private static final float FLING_TICK_DECAY = 0.8f; 4410 4411 /* The input device that we are tracking. */ 4412 4413 private int mCurrentDeviceId = -1; 4414 private int mCurrentSource; 4415 private boolean mCurrentDeviceSupported; 4416 4417 /* Configuration for the current input device. */ 4418 4419 // The tap timeout and scaled slop. 4420 private int mConfigTapTimeout; 4421 private float mConfigTapSlop; 4422 4423 // Amount of time to wait between button presses and tap generation for debouncing 4424 private int mConfigDebounceTime; 4425 4426 // The scaled tick distance. A movement of this amount should generally translate 4427 // into a single dpad event in a given direction. 4428 private float mConfigTickDistance; 4429 4430 // The minimum and maximum scaled fling velocity. 4431 private float mConfigMinFlingVelocity; 4432 private float mConfigMaxFlingVelocity; 4433 4434 /* Tracking state. */ 4435 4436 // The velocity tracker for detecting flings. 4437 private VelocityTracker mVelocityTracker; 4438 4439 // The active pointer id, or -1 if none. 4440 private int mActivePointerId = -1; 4441 4442 // Time and location where tracking started. 4443 private long mStartTime; 4444 private float mStartX; 4445 private float mStartY; 4446 4447 // Most recently observed position. 4448 private float mLastX; 4449 private float mLastY; 4450 4451 // Accumulated movement delta since the last direction key was sent. 4452 private float mAccumulatedX; 4453 private float mAccumulatedY; 4454 4455 // Set to true if any movement was delivered to the app. 4456 // Implies that tap slop was exceeded. 4457 private boolean mConsumedMovement; 4458 4459 // The most recently sent key down event. 4460 // The keycode remains set until the direction changes or a fling ends 4461 // so that repeated key events may be generated as required. 4462 private long mPendingKeyDownTime; 4463 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4464 private int mPendingKeyRepeatCount; 4465 private int mPendingKeyMetaState; 4466 4467 // The current fling velocity while a fling is in progress. 4468 private boolean mFlinging; 4469 private float mFlingVelocity; 4470 4471 // The last time a confirm key was pressed on the touch nav device 4472 private long mLastConfirmKeyTime = Long.MAX_VALUE; 4473 4474 private boolean mHasButtonUnderPad; 4475 4476 public SyntheticTouchNavigationHandler() { 4477 super(true); 4478 } 4479 4480 public void process(MotionEvent event) { 4481 // Update the current device information. 4482 final long time = event.getEventTime(); 4483 final int deviceId = event.getDeviceId(); 4484 final int source = event.getSource(); 4485 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4486 finishKeys(time); 4487 finishTracking(time); 4488 mCurrentDeviceId = deviceId; 4489 mCurrentSource = source; 4490 mCurrentDeviceSupported = false; 4491 InputDevice device = event.getDevice(); 4492 if (device != null) { 4493 // In order to support an input device, we must know certain 4494 // characteristics about it, such as its size and resolution. 4495 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4496 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4497 if (xRange != null && yRange != null) { 4498 mCurrentDeviceSupported = true; 4499 4500 // Infer the resolution if it not actually known. 4501 float xRes = xRange.getResolution(); 4502 if (xRes <= 0) { 4503 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4504 } 4505 float yRes = yRange.getResolution(); 4506 if (yRes <= 0) { 4507 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4508 } 4509 float nominalRes = (xRes + yRes) * 0.5f; 4510 4511 // Precompute all of the configuration thresholds we will need. 4512 mConfigTapTimeout = TAP_TIMEOUT; 4513 mConfigTapSlop = TAP_SLOP_MILLIMETERS * nominalRes; 4514 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4515 mConfigMinFlingVelocity = 4516 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4517 mConfigMaxFlingVelocity = 4518 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4519 mConfigDebounceTime = DEBOUNCE_TIME; 4520 mHasButtonUnderPad = device.hasButtonUnderPad(); 4521 4522 if (LOCAL_DEBUG) { 4523 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4524 + " (" + Integer.toHexString(mCurrentSource) + "): " 4525 + "mConfigTapTimeout=" + mConfigTapTimeout 4526 + ", mConfigTapSlop=" + mConfigTapSlop 4527 + ", mConfigTickDistance=" + mConfigTickDistance 4528 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4529 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4530 } 4531 } 4532 } 4533 } 4534 if (!mCurrentDeviceSupported) { 4535 return; 4536 } 4537 4538 // Handle the event. 4539 final int action = event.getActionMasked(); 4540 switch (action) { 4541 case MotionEvent.ACTION_DOWN: { 4542 boolean caughtFling = mFlinging; 4543 finishKeys(time); 4544 finishTracking(time); 4545 mActivePointerId = event.getPointerId(0); 4546 mVelocityTracker = VelocityTracker.obtain(); 4547 mVelocityTracker.addMovement(event); 4548 mStartTime = time; 4549 mStartX = event.getX(); 4550 mStartY = event.getY(); 4551 mLastX = mStartX; 4552 mLastY = mStartY; 4553 mAccumulatedX = 0; 4554 mAccumulatedY = 0; 4555 4556 // If we caught a fling, then pretend that the tap slop has already 4557 // been exceeded to suppress taps whose only purpose is to stop the fling. 4558 mConsumedMovement = caughtFling; 4559 break; 4560 } 4561 4562 case MotionEvent.ACTION_MOVE: 4563 case MotionEvent.ACTION_UP: { 4564 if (mActivePointerId < 0) { 4565 break; 4566 } 4567 final int index = event.findPointerIndex(mActivePointerId); 4568 if (index < 0) { 4569 finishKeys(time); 4570 finishTracking(time); 4571 break; 4572 } 4573 4574 mVelocityTracker.addMovement(event); 4575 final float x = event.getX(index); 4576 final float y = event.getY(index); 4577 mAccumulatedX += x - mLastX; 4578 mAccumulatedY += y - mLastY; 4579 mLastX = x; 4580 mLastY = y; 4581 4582 // Consume any accumulated movement so far. 4583 final int metaState = event.getMetaState(); 4584 consumeAccumulatedMovement(time, metaState); 4585 4586 // Detect taps and flings. 4587 if (action == MotionEvent.ACTION_UP) { 4588 if (!mConsumedMovement 4589 && Math.hypot(mLastX - mStartX, mLastY - mStartY) < mConfigTapSlop 4590 && time <= mStartTime + mConfigTapTimeout) { 4591 if (!mHasButtonUnderPad || 4592 time >= mLastConfirmKeyTime + mConfigDebounceTime) { 4593 // It's a tap! 4594 finishKeys(time); 4595 sendKeyDownOrRepeat(time, KeyEvent.KEYCODE_DPAD_CENTER, metaState); 4596 sendKeyUp(time); 4597 } 4598 } else if (mConsumedMovement 4599 && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4600 // It might be a fling. 4601 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4602 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4603 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4604 if (!startFling(time, vx, vy)) { 4605 finishKeys(time); 4606 } 4607 } 4608 finishTracking(time); 4609 } 4610 break; 4611 } 4612 4613 case MotionEvent.ACTION_CANCEL: { 4614 finishKeys(time); 4615 finishTracking(time); 4616 break; 4617 } 4618 } 4619 } 4620 4621 public void cancel(MotionEvent event) { 4622 if (mCurrentDeviceId == event.getDeviceId() 4623 && mCurrentSource == event.getSource()) { 4624 final long time = event.getEventTime(); 4625 finishKeys(time); 4626 finishTracking(time); 4627 } 4628 } 4629 4630 public void notifyKeyEvent(KeyEvent e) { 4631 final int keyCode = e.getKeyCode(); 4632 if (KeyEvent.isConfirmKey(e.getKeyCode())) { 4633 mLastConfirmKeyTime = e.getDownTime(); 4634 } 4635 } 4636 4637 private void finishKeys(long time) { 4638 cancelFling(); 4639 sendKeyUp(time); 4640 } 4641 4642 private void finishTracking(long time) { 4643 if (mActivePointerId >= 0) { 4644 mActivePointerId = -1; 4645 mVelocityTracker.recycle(); 4646 mVelocityTracker = null; 4647 } 4648 } 4649 4650 private void consumeAccumulatedMovement(long time, int metaState) { 4651 final float absX = Math.abs(mAccumulatedX); 4652 final float absY = Math.abs(mAccumulatedY); 4653 if (absX >= absY) { 4654 if (absX >= mConfigTickDistance) { 4655 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4656 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4657 mAccumulatedY = 0; 4658 mConsumedMovement = true; 4659 } 4660 } else { 4661 if (absY >= mConfigTickDistance) { 4662 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4663 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4664 mAccumulatedX = 0; 4665 mConsumedMovement = true; 4666 } 4667 } 4668 } 4669 4670 private float consumeAccumulatedMovement(long time, int metaState, 4671 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4672 while (accumulator <= -mConfigTickDistance) { 4673 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4674 accumulator += mConfigTickDistance; 4675 } 4676 while (accumulator >= mConfigTickDistance) { 4677 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4678 accumulator -= mConfigTickDistance; 4679 } 4680 return accumulator; 4681 } 4682 4683 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4684 if (mPendingKeyCode != keyCode) { 4685 sendKeyUp(time); 4686 mPendingKeyDownTime = time; 4687 mPendingKeyCode = keyCode; 4688 mPendingKeyRepeatCount = 0; 4689 } else { 4690 mPendingKeyRepeatCount += 1; 4691 } 4692 mPendingKeyMetaState = metaState; 4693 4694 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4695 // but it doesn't quite make sense when simulating the events in this way. 4696 if (LOCAL_DEBUG) { 4697 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4698 + ", repeatCount=" + mPendingKeyRepeatCount 4699 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4700 } 4701 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4702 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4703 mPendingKeyMetaState, mCurrentDeviceId, 4704 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4705 } 4706 4707 private void sendKeyUp(long time) { 4708 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4709 if (LOCAL_DEBUG) { 4710 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4711 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4712 } 4713 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4714 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4715 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4716 mCurrentSource)); 4717 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4718 } 4719 } 4720 4721 private boolean startFling(long time, float vx, float vy) { 4722 if (LOCAL_DEBUG) { 4723 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4724 + ", min=" + mConfigMinFlingVelocity); 4725 } 4726 4727 // Flings must be oriented in the same direction as the preceding movements. 4728 switch (mPendingKeyCode) { 4729 case KeyEvent.KEYCODE_DPAD_LEFT: 4730 if (-vx >= mConfigMinFlingVelocity 4731 && Math.abs(vy) < mConfigMinFlingVelocity) { 4732 mFlingVelocity = -vx; 4733 break; 4734 } 4735 return false; 4736 4737 case KeyEvent.KEYCODE_DPAD_RIGHT: 4738 if (vx >= mConfigMinFlingVelocity 4739 && Math.abs(vy) < mConfigMinFlingVelocity) { 4740 mFlingVelocity = vx; 4741 break; 4742 } 4743 return false; 4744 4745 case KeyEvent.KEYCODE_DPAD_UP: 4746 if (-vy >= mConfigMinFlingVelocity 4747 && Math.abs(vx) < mConfigMinFlingVelocity) { 4748 mFlingVelocity = -vy; 4749 break; 4750 } 4751 return false; 4752 4753 case KeyEvent.KEYCODE_DPAD_DOWN: 4754 if (vy >= mConfigMinFlingVelocity 4755 && Math.abs(vx) < mConfigMinFlingVelocity) { 4756 mFlingVelocity = vy; 4757 break; 4758 } 4759 return false; 4760 } 4761 4762 // Post the first fling event. 4763 mFlinging = postFling(time); 4764 return mFlinging; 4765 } 4766 4767 private boolean postFling(long time) { 4768 // The idea here is to estimate the time when the pointer would have 4769 // traveled one tick distance unit given the current fling velocity. 4770 // This effect creates continuity of motion. 4771 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4772 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4773 postAtTime(mFlingRunnable, time + delay); 4774 if (LOCAL_DEBUG) { 4775 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4776 + mFlingVelocity + ", delay=" + delay 4777 + ", keyCode=" + mPendingKeyCode); 4778 } 4779 return true; 4780 } 4781 return false; 4782 } 4783 4784 private void cancelFling() { 4785 if (mFlinging) { 4786 removeCallbacks(mFlingRunnable); 4787 mFlinging = false; 4788 } 4789 } 4790 4791 private final Runnable mFlingRunnable = new Runnable() { 4792 @Override 4793 public void run() { 4794 final long time = SystemClock.uptimeMillis(); 4795 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4796 mFlingVelocity *= FLING_TICK_DECAY; 4797 if (!postFling(time)) { 4798 mFlinging = false; 4799 finishKeys(time); 4800 } 4801 } 4802 }; 4803 } 4804 4805 /** 4806 * Returns true if the key is used for keyboard navigation. 4807 * @param keyEvent The key event. 4808 * @return True if the key is used for keyboard navigation. 4809 */ 4810 private static boolean isNavigationKey(KeyEvent keyEvent) { 4811 switch (keyEvent.getKeyCode()) { 4812 case KeyEvent.KEYCODE_DPAD_LEFT: 4813 case KeyEvent.KEYCODE_DPAD_RIGHT: 4814 case KeyEvent.KEYCODE_DPAD_UP: 4815 case KeyEvent.KEYCODE_DPAD_DOWN: 4816 case KeyEvent.KEYCODE_DPAD_CENTER: 4817 case KeyEvent.KEYCODE_PAGE_UP: 4818 case KeyEvent.KEYCODE_PAGE_DOWN: 4819 case KeyEvent.KEYCODE_MOVE_HOME: 4820 case KeyEvent.KEYCODE_MOVE_END: 4821 case KeyEvent.KEYCODE_TAB: 4822 case KeyEvent.KEYCODE_SPACE: 4823 case KeyEvent.KEYCODE_ENTER: 4824 return true; 4825 } 4826 return false; 4827 } 4828 4829 /** 4830 * Returns true if the key is used for typing. 4831 * @param keyEvent The key event. 4832 * @return True if the key is used for typing. 4833 */ 4834 private static boolean isTypingKey(KeyEvent keyEvent) { 4835 return keyEvent.getUnicodeChar() > 0; 4836 } 4837 4838 /** 4839 * See if the key event means we should leave touch mode (and leave touch mode if so). 4840 * @param event The key event. 4841 * @return Whether this key event should be consumed (meaning the act of 4842 * leaving touch mode alone is considered the event). 4843 */ 4844 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4845 // Only relevant in touch mode. 4846 if (!mAttachInfo.mInTouchMode) { 4847 return false; 4848 } 4849 4850 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4851 final int action = event.getAction(); 4852 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4853 return false; 4854 } 4855 4856 // Don't leave touch mode if the IME told us not to. 4857 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4858 return false; 4859 } 4860 4861 // If the key can be used for keyboard navigation then leave touch mode 4862 // and select a focused view if needed (in ensureTouchMode). 4863 // When a new focused view is selected, we consume the navigation key because 4864 // navigation doesn't make much sense unless a view already has focus so 4865 // the key's purpose is to set focus. 4866 if (isNavigationKey(event)) { 4867 return ensureTouchMode(false); 4868 } 4869 4870 // If the key can be used for typing then leave touch mode 4871 // and select a focused view if needed (in ensureTouchMode). 4872 // Always allow the view to process the typing key. 4873 if (isTypingKey(event)) { 4874 ensureTouchMode(false); 4875 return false; 4876 } 4877 4878 return false; 4879 } 4880 4881 /* drag/drop */ 4882 void setLocalDragState(Object obj) { 4883 mLocalDragState = obj; 4884 } 4885 4886 private void handleDragEvent(DragEvent event) { 4887 // From the root, only drag start/end/location are dispatched. entered/exited 4888 // are determined and dispatched by the viewgroup hierarchy, who then report 4889 // that back here for ultimate reporting back to the framework. 4890 if (mView != null && mAdded) { 4891 final int what = event.mAction; 4892 4893 if (what == DragEvent.ACTION_DRAG_EXITED) { 4894 // A direct EXITED event means that the window manager knows we've just crossed 4895 // a window boundary, so the current drag target within this one must have 4896 // just been exited. Send it the usual notifications and then we're done 4897 // for now. 4898 mView.dispatchDragEvent(event); 4899 } else { 4900 // Cache the drag description when the operation starts, then fill it in 4901 // on subsequent calls as a convenience 4902 if (what == DragEvent.ACTION_DRAG_STARTED) { 4903 mCurrentDragView = null; // Start the current-recipient tracking 4904 mDragDescription = event.mClipDescription; 4905 } else { 4906 event.mClipDescription = mDragDescription; 4907 } 4908 4909 // For events with a [screen] location, translate into window coordinates 4910 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4911 mDragPoint.set(event.mX, event.mY); 4912 if (mTranslator != null) { 4913 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4914 } 4915 4916 if (mCurScrollY != 0) { 4917 mDragPoint.offset(0, mCurScrollY); 4918 } 4919 4920 event.mX = mDragPoint.x; 4921 event.mY = mDragPoint.y; 4922 } 4923 4924 // Remember who the current drag target is pre-dispatch 4925 final View prevDragView = mCurrentDragView; 4926 4927 // Now dispatch the drag/drop event 4928 boolean result = mView.dispatchDragEvent(event); 4929 4930 // If we changed apparent drag target, tell the OS about it 4931 if (prevDragView != mCurrentDragView) { 4932 try { 4933 if (prevDragView != null) { 4934 mWindowSession.dragRecipientExited(mWindow); 4935 } 4936 if (mCurrentDragView != null) { 4937 mWindowSession.dragRecipientEntered(mWindow); 4938 } 4939 } catch (RemoteException e) { 4940 Slog.e(TAG, "Unable to note drag target change"); 4941 } 4942 } 4943 4944 // Report the drop result when we're done 4945 if (what == DragEvent.ACTION_DROP) { 4946 mDragDescription = null; 4947 try { 4948 Log.i(TAG, "Reporting drop result: " + result); 4949 mWindowSession.reportDropResult(mWindow, result); 4950 } catch (RemoteException e) { 4951 Log.e(TAG, "Unable to report drop result"); 4952 } 4953 } 4954 4955 // When the drag operation ends, release any local state object 4956 // that may have been in use 4957 if (what == DragEvent.ACTION_DRAG_ENDED) { 4958 setLocalDragState(null); 4959 } 4960 } 4961 } 4962 event.recycle(); 4963 } 4964 4965 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 4966 if (mSeq != args.seq) { 4967 // The sequence has changed, so we need to update our value and make 4968 // sure to do a traversal afterward so the window manager is given our 4969 // most recent data. 4970 mSeq = args.seq; 4971 mAttachInfo.mForceReportNewAttributes = true; 4972 scheduleTraversals(); 4973 } 4974 if (mView == null) return; 4975 if (args.localChanges != 0) { 4976 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 4977 } 4978 if (mAttachInfo != null) { 4979 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 4980 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 4981 mAttachInfo.mGlobalSystemUiVisibility = visibility; 4982 mView.dispatchSystemUiVisibilityChanged(visibility); 4983 } 4984 } 4985 } 4986 4987 public void handleDispatchDoneAnimating() { 4988 if (mWindowsAnimating) { 4989 mWindowsAnimating = false; 4990 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 4991 scheduleTraversals(); 4992 } 4993 } 4994 } 4995 4996 public void getLastTouchPoint(Point outLocation) { 4997 outLocation.x = (int) mLastTouchPoint.x; 4998 outLocation.y = (int) mLastTouchPoint.y; 4999 } 5000 5001 public void setDragFocus(View newDragTarget) { 5002 if (mCurrentDragView != newDragTarget) { 5003 mCurrentDragView = newDragTarget; 5004 } 5005 } 5006 5007 private AudioManager getAudioManager() { 5008 if (mView == null) { 5009 throw new IllegalStateException("getAudioManager called when there is no mView"); 5010 } 5011 if (mAudioManager == null) { 5012 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5013 } 5014 return mAudioManager; 5015 } 5016 5017 public AccessibilityInteractionController getAccessibilityInteractionController() { 5018 if (mView == null) { 5019 throw new IllegalStateException("getAccessibilityInteractionController" 5020 + " called when there is no mView"); 5021 } 5022 if (mAccessibilityInteractionController == null) { 5023 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5024 } 5025 return mAccessibilityInteractionController; 5026 } 5027 5028 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5029 boolean insetsPending) throws RemoteException { 5030 5031 float appScale = mAttachInfo.mApplicationScale; 5032 boolean restore = false; 5033 if (params != null && mTranslator != null) { 5034 restore = true; 5035 params.backup(); 5036 mTranslator.translateWindowLayout(params); 5037 } 5038 if (params != null) { 5039 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5040 } 5041 mPendingConfiguration.seq = 0; 5042 //Log.d(TAG, ">>>>>> CALLING relayout"); 5043 if (params != null && mOrigWindowType != params.type) { 5044 // For compatibility with old apps, don't crash here. 5045 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5046 Slog.w(TAG, "Window type can not be changed after " 5047 + "the window is added; ignoring change of " + mView); 5048 params.type = mOrigWindowType; 5049 } 5050 } 5051 int relayoutResult = mWindowSession.relayout( 5052 mWindow, mSeq, params, 5053 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5054 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5055 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5056 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5057 mPendingConfiguration, mSurface); 5058 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5059 if (restore) { 5060 params.restore(); 5061 } 5062 5063 if (mTranslator != null) { 5064 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5065 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5066 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5067 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5068 } 5069 return relayoutResult; 5070 } 5071 5072 /** 5073 * {@inheritDoc} 5074 */ 5075 public void playSoundEffect(int effectId) { 5076 checkThread(); 5077 5078 if (mMediaDisabled) { 5079 return; 5080 } 5081 5082 try { 5083 final AudioManager audioManager = getAudioManager(); 5084 5085 switch (effectId) { 5086 case SoundEffectConstants.CLICK: 5087 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5088 return; 5089 case SoundEffectConstants.NAVIGATION_DOWN: 5090 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5091 return; 5092 case SoundEffectConstants.NAVIGATION_LEFT: 5093 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5094 return; 5095 case SoundEffectConstants.NAVIGATION_RIGHT: 5096 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5097 return; 5098 case SoundEffectConstants.NAVIGATION_UP: 5099 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5100 return; 5101 default: 5102 throw new IllegalArgumentException("unknown effect id " + effectId + 5103 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5104 } 5105 } catch (IllegalStateException e) { 5106 // Exception thrown by getAudioManager() when mView is null 5107 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5108 e.printStackTrace(); 5109 } 5110 } 5111 5112 /** 5113 * {@inheritDoc} 5114 */ 5115 public boolean performHapticFeedback(int effectId, boolean always) { 5116 try { 5117 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5118 } catch (RemoteException e) { 5119 return false; 5120 } 5121 } 5122 5123 /** 5124 * {@inheritDoc} 5125 */ 5126 public View focusSearch(View focused, int direction) { 5127 checkThread(); 5128 if (!(mView instanceof ViewGroup)) { 5129 return null; 5130 } 5131 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5132 } 5133 5134 public void debug() { 5135 mView.debug(); 5136 } 5137 5138 public void dumpGfxInfo(int[] info) { 5139 info[0] = info[1] = 0; 5140 if (mView != null) { 5141 getGfxInfo(mView, info); 5142 } 5143 } 5144 5145 private static void getGfxInfo(View view, int[] info) { 5146 DisplayList displayList = view.mDisplayList; 5147 info[0]++; 5148 if (displayList != null) { 5149 info[1] += displayList.getSize(); 5150 } 5151 5152 if (view instanceof ViewGroup) { 5153 ViewGroup group = (ViewGroup) view; 5154 5155 int count = group.getChildCount(); 5156 for (int i = 0; i < count; i++) { 5157 getGfxInfo(group.getChildAt(i), info); 5158 } 5159 } 5160 } 5161 5162 /** 5163 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5164 * @return True, request has been queued. False, request has been completed. 5165 */ 5166 boolean die(boolean immediate) { 5167 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5168 // done by dispatchDetachedFromWindow will cause havoc on return. 5169 if (immediate && !mIsInTraversal) { 5170 doDie(); 5171 return false; 5172 } 5173 5174 if (!mIsDrawing) { 5175 destroyHardwareRenderer(); 5176 } else { 5177 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5178 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5179 } 5180 mHandler.sendEmptyMessage(MSG_DIE); 5181 return true; 5182 } 5183 5184 void doDie() { 5185 checkThread(); 5186 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5187 synchronized (this) { 5188 if (mRemoved) { 5189 return; 5190 } 5191 mRemoved = true; 5192 if (mAdded) { 5193 dispatchDetachedFromWindow(); 5194 } 5195 5196 if (mAdded && !mFirst) { 5197 invalidateDisplayLists(); 5198 destroyHardwareRenderer(); 5199 5200 if (mView != null) { 5201 int viewVisibility = mView.getVisibility(); 5202 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5203 if (mWindowAttributesChanged || viewVisibilityChanged) { 5204 // If layout params have been changed, first give them 5205 // to the window manager to make sure it has the correct 5206 // animation info. 5207 try { 5208 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5209 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5210 mWindowSession.finishDrawing(mWindow); 5211 } 5212 } catch (RemoteException e) { 5213 } 5214 } 5215 5216 mSurface.release(); 5217 } 5218 } 5219 5220 mAdded = false; 5221 } 5222 WindowManagerGlobal.getInstance().doRemoveView(this); 5223 } 5224 5225 public void requestUpdateConfiguration(Configuration config) { 5226 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5227 mHandler.sendMessage(msg); 5228 } 5229 5230 public void loadSystemProperties() { 5231 mHandler.post(new Runnable() { 5232 @Override 5233 public void run() { 5234 // Profiling 5235 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5236 profileRendering(mAttachInfo.mHasWindowFocus); 5237 5238 // Media (used by sound effects) 5239 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5240 5241 // Hardware rendering 5242 if (mAttachInfo.mHardwareRenderer != null) { 5243 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5244 invalidate(); 5245 } 5246 } 5247 5248 // Layout debugging 5249 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5250 if (layout != mAttachInfo.mDebugLayout) { 5251 mAttachInfo.mDebugLayout = layout; 5252 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5253 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5254 } 5255 } 5256 } 5257 }); 5258 } 5259 5260 private void destroyHardwareRenderer() { 5261 AttachInfo attachInfo = mAttachInfo; 5262 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5263 5264 if (hardwareRenderer != null) { 5265 if (mView != null) { 5266 hardwareRenderer.destroyHardwareResources(mView); 5267 } 5268 hardwareRenderer.destroy(true); 5269 hardwareRenderer.setRequested(false); 5270 5271 attachInfo.mHardwareRenderer = null; 5272 attachInfo.mHardwareAccelerated = false; 5273 } 5274 } 5275 5276 public void dispatchFinishInputConnection(InputConnection connection) { 5277 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5278 mHandler.sendMessage(msg); 5279 } 5280 5281 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5282 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5283 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5284 + " contentInsets=" + contentInsets.toShortString() 5285 + " visibleInsets=" + visibleInsets.toShortString() 5286 + " reportDraw=" + reportDraw); 5287 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5288 if (mTranslator != null) { 5289 mTranslator.translateRectInScreenToAppWindow(frame); 5290 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5291 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5292 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5293 } 5294 SomeArgs args = SomeArgs.obtain(); 5295 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5296 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5297 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5298 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5299 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5300 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5301 msg.obj = args; 5302 mHandler.sendMessage(msg); 5303 } 5304 5305 public void dispatchMoved(int newX, int newY) { 5306 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5307 if (mTranslator != null) { 5308 PointF point = new PointF(newX, newY); 5309 mTranslator.translatePointInScreenToAppWindow(point); 5310 newX = (int) (point.x + 0.5); 5311 newY = (int) (point.y + 0.5); 5312 } 5313 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5314 mHandler.sendMessage(msg); 5315 } 5316 5317 /** 5318 * Represents a pending input event that is waiting in a queue. 5319 * 5320 * Input events are processed in serial order by the timestamp specified by 5321 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5322 * one input event to the application at a time and waits for the application 5323 * to finish handling it before delivering the next one. 5324 * 5325 * However, because the application or IME can synthesize and inject multiple 5326 * key events at a time without going through the input dispatcher, we end up 5327 * needing a queue on the application's side. 5328 */ 5329 private static final class QueuedInputEvent { 5330 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5331 public static final int FLAG_DEFERRED = 1 << 1; 5332 public static final int FLAG_FINISHED = 1 << 2; 5333 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5334 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5335 5336 public QueuedInputEvent mNext; 5337 5338 public InputEvent mEvent; 5339 public InputEventReceiver mReceiver; 5340 public int mFlags; 5341 5342 public boolean shouldSkipIme() { 5343 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5344 return true; 5345 } 5346 return mEvent instanceof MotionEvent 5347 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5348 } 5349 } 5350 5351 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5352 InputEventReceiver receiver, int flags) { 5353 QueuedInputEvent q = mQueuedInputEventPool; 5354 if (q != null) { 5355 mQueuedInputEventPoolSize -= 1; 5356 mQueuedInputEventPool = q.mNext; 5357 q.mNext = null; 5358 } else { 5359 q = new QueuedInputEvent(); 5360 } 5361 5362 q.mEvent = event; 5363 q.mReceiver = receiver; 5364 q.mFlags = flags; 5365 return q; 5366 } 5367 5368 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5369 q.mEvent = null; 5370 q.mReceiver = null; 5371 5372 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5373 mQueuedInputEventPoolSize += 1; 5374 q.mNext = mQueuedInputEventPool; 5375 mQueuedInputEventPool = q; 5376 } 5377 } 5378 5379 void enqueueInputEvent(InputEvent event) { 5380 enqueueInputEvent(event, null, 0, false); 5381 } 5382 5383 void enqueueInputEvent(InputEvent event, 5384 InputEventReceiver receiver, int flags, boolean processImmediately) { 5385 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5386 5387 // Always enqueue the input event in order, regardless of its time stamp. 5388 // We do this because the application or the IME may inject key events 5389 // in response to touch events and we want to ensure that the injected keys 5390 // are processed in the order they were received and we cannot trust that 5391 // the time stamp of injected events are monotonic. 5392 QueuedInputEvent last = mPendingInputEventTail; 5393 if (last == null) { 5394 mPendingInputEventHead = q; 5395 mPendingInputEventTail = q; 5396 } else { 5397 last.mNext = q; 5398 mPendingInputEventTail = q; 5399 } 5400 mPendingInputEventCount += 1; 5401 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5402 mPendingInputEventCount); 5403 5404 if (processImmediately) { 5405 doProcessInputEvents(); 5406 } else { 5407 scheduleProcessInputEvents(); 5408 } 5409 } 5410 5411 private void scheduleProcessInputEvents() { 5412 if (!mProcessInputEventsScheduled) { 5413 mProcessInputEventsScheduled = true; 5414 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5415 msg.setAsynchronous(true); 5416 mHandler.sendMessage(msg); 5417 } 5418 } 5419 5420 void doProcessInputEvents() { 5421 // Deliver all pending input events in the queue. 5422 while (mPendingInputEventHead != null) { 5423 QueuedInputEvent q = mPendingInputEventHead; 5424 mPendingInputEventHead = q.mNext; 5425 if (mPendingInputEventHead == null) { 5426 mPendingInputEventTail = null; 5427 } 5428 q.mNext = null; 5429 5430 mPendingInputEventCount -= 1; 5431 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5432 mPendingInputEventCount); 5433 5434 deliverInputEvent(q); 5435 } 5436 5437 // We are done processing all input events that we can process right now 5438 // so we can clear the pending flag immediately. 5439 if (mProcessInputEventsScheduled) { 5440 mProcessInputEventsScheduled = false; 5441 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5442 } 5443 } 5444 5445 private void deliverInputEvent(QueuedInputEvent q) { 5446 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5447 try { 5448 if (mInputEventConsistencyVerifier != null) { 5449 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5450 } 5451 5452 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5453 if (stage != null) { 5454 stage.deliver(q); 5455 } else { 5456 finishInputEvent(q); 5457 } 5458 } finally { 5459 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5460 } 5461 } 5462 5463 private void finishInputEvent(QueuedInputEvent q) { 5464 if (q.mReceiver != null) { 5465 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5466 q.mReceiver.finishInputEvent(q.mEvent, handled); 5467 } else { 5468 q.mEvent.recycleIfNeededAfterDispatch(); 5469 } 5470 5471 recycleQueuedInputEvent(q); 5472 } 5473 5474 static boolean isTerminalInputEvent(InputEvent event) { 5475 if (event instanceof KeyEvent) { 5476 final KeyEvent keyEvent = (KeyEvent)event; 5477 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5478 } else { 5479 final MotionEvent motionEvent = (MotionEvent)event; 5480 final int action = motionEvent.getAction(); 5481 return action == MotionEvent.ACTION_UP 5482 || action == MotionEvent.ACTION_CANCEL 5483 || action == MotionEvent.ACTION_HOVER_EXIT; 5484 } 5485 } 5486 5487 void scheduleConsumeBatchedInput() { 5488 if (!mConsumeBatchedInputScheduled) { 5489 mConsumeBatchedInputScheduled = true; 5490 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5491 mConsumedBatchedInputRunnable, null); 5492 } 5493 } 5494 5495 void unscheduleConsumeBatchedInput() { 5496 if (mConsumeBatchedInputScheduled) { 5497 mConsumeBatchedInputScheduled = false; 5498 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5499 mConsumedBatchedInputRunnable, null); 5500 } 5501 } 5502 5503 void doConsumeBatchedInput(long frameTimeNanos) { 5504 if (mConsumeBatchedInputScheduled) { 5505 mConsumeBatchedInputScheduled = false; 5506 if (mInputEventReceiver != null) { 5507 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5508 } 5509 doProcessInputEvents(); 5510 } 5511 } 5512 5513 final class TraversalRunnable implements Runnable { 5514 @Override 5515 public void run() { 5516 doTraversal(); 5517 } 5518 } 5519 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5520 5521 final class WindowInputEventReceiver extends InputEventReceiver { 5522 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5523 super(inputChannel, looper); 5524 } 5525 5526 @Override 5527 public void onInputEvent(InputEvent event) { 5528 enqueueInputEvent(event, this, 0, true); 5529 } 5530 5531 @Override 5532 public void onBatchedInputEventPending() { 5533 scheduleConsumeBatchedInput(); 5534 } 5535 5536 @Override 5537 public void dispose() { 5538 unscheduleConsumeBatchedInput(); 5539 super.dispose(); 5540 } 5541 } 5542 WindowInputEventReceiver mInputEventReceiver; 5543 5544 final class ConsumeBatchedInputRunnable implements Runnable { 5545 @Override 5546 public void run() { 5547 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5548 } 5549 } 5550 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5551 new ConsumeBatchedInputRunnable(); 5552 boolean mConsumeBatchedInputScheduled; 5553 5554 final class InvalidateOnAnimationRunnable implements Runnable { 5555 private boolean mPosted; 5556 private ArrayList<View> mViews = new ArrayList<View>(); 5557 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5558 new ArrayList<AttachInfo.InvalidateInfo>(); 5559 private View[] mTempViews; 5560 private AttachInfo.InvalidateInfo[] mTempViewRects; 5561 5562 public void addView(View view) { 5563 synchronized (this) { 5564 mViews.add(view); 5565 postIfNeededLocked(); 5566 } 5567 } 5568 5569 public void addViewRect(AttachInfo.InvalidateInfo info) { 5570 synchronized (this) { 5571 mViewRects.add(info); 5572 postIfNeededLocked(); 5573 } 5574 } 5575 5576 public void removeView(View view) { 5577 synchronized (this) { 5578 mViews.remove(view); 5579 5580 for (int i = mViewRects.size(); i-- > 0; ) { 5581 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5582 if (info.target == view) { 5583 mViewRects.remove(i); 5584 info.recycle(); 5585 } 5586 } 5587 5588 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5589 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5590 mPosted = false; 5591 } 5592 } 5593 } 5594 5595 @Override 5596 public void run() { 5597 final int viewCount; 5598 final int viewRectCount; 5599 synchronized (this) { 5600 mPosted = false; 5601 5602 viewCount = mViews.size(); 5603 if (viewCount != 0) { 5604 mTempViews = mViews.toArray(mTempViews != null 5605 ? mTempViews : new View[viewCount]); 5606 mViews.clear(); 5607 } 5608 5609 viewRectCount = mViewRects.size(); 5610 if (viewRectCount != 0) { 5611 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5612 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5613 mViewRects.clear(); 5614 } 5615 } 5616 5617 for (int i = 0; i < viewCount; i++) { 5618 mTempViews[i].invalidate(); 5619 mTempViews[i] = null; 5620 } 5621 5622 for (int i = 0; i < viewRectCount; i++) { 5623 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5624 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5625 info.recycle(); 5626 } 5627 } 5628 5629 private void postIfNeededLocked() { 5630 if (!mPosted) { 5631 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5632 mPosted = true; 5633 } 5634 } 5635 } 5636 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5637 new InvalidateOnAnimationRunnable(); 5638 5639 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5640 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5641 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5642 } 5643 5644 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5645 long delayMilliseconds) { 5646 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5647 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5648 } 5649 5650 public void dispatchInvalidateOnAnimation(View view) { 5651 mInvalidateOnAnimationRunnable.addView(view); 5652 } 5653 5654 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5655 mInvalidateOnAnimationRunnable.addViewRect(info); 5656 } 5657 5658 public void enqueueDisplayList(DisplayList displayList) { 5659 mDisplayLists.add(displayList); 5660 } 5661 5662 public void cancelInvalidate(View view) { 5663 mHandler.removeMessages(MSG_INVALIDATE, view); 5664 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5665 // them to the pool 5666 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5667 mInvalidateOnAnimationRunnable.removeView(view); 5668 } 5669 5670 public void dispatchInputEvent(InputEvent event) { 5671 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, event); 5672 msg.setAsynchronous(true); 5673 mHandler.sendMessage(msg); 5674 } 5675 5676 public void dispatchKeyFromIme(KeyEvent event) { 5677 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5678 msg.setAsynchronous(true); 5679 mHandler.sendMessage(msg); 5680 } 5681 5682 public void dispatchUnhandledKey(KeyEvent event) { 5683 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5684 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5685 final int keyCode = event.getKeyCode(); 5686 final int metaState = event.getMetaState(); 5687 5688 // Check for fallback actions specified by the key character map. 5689 KeyCharacterMap.FallbackAction fallbackAction = 5690 kcm.getFallbackAction(keyCode, metaState); 5691 if (fallbackAction != null) { 5692 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5693 KeyEvent fallbackEvent = KeyEvent.obtain( 5694 event.getDownTime(), event.getEventTime(), 5695 event.getAction(), fallbackAction.keyCode, 5696 event.getRepeatCount(), fallbackAction.metaState, 5697 event.getDeviceId(), event.getScanCode(), 5698 flags, event.getSource(), null); 5699 fallbackAction.recycle(); 5700 5701 dispatchInputEvent(fallbackEvent); 5702 } 5703 } 5704 } 5705 5706 public void dispatchAppVisibility(boolean visible) { 5707 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5708 msg.arg1 = visible ? 1 : 0; 5709 mHandler.sendMessage(msg); 5710 } 5711 5712 public void dispatchScreenStateChange(boolean on) { 5713 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5714 msg.arg1 = on ? 1 : 0; 5715 mHandler.sendMessage(msg); 5716 } 5717 5718 public void dispatchGetNewSurface() { 5719 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5720 mHandler.sendMessage(msg); 5721 } 5722 5723 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5724 Message msg = Message.obtain(); 5725 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5726 msg.arg1 = hasFocus ? 1 : 0; 5727 msg.arg2 = inTouchMode ? 1 : 0; 5728 mHandler.sendMessage(msg); 5729 } 5730 5731 public void dispatchCloseSystemDialogs(String reason) { 5732 Message msg = Message.obtain(); 5733 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5734 msg.obj = reason; 5735 mHandler.sendMessage(msg); 5736 } 5737 5738 public void dispatchDragEvent(DragEvent event) { 5739 final int what; 5740 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5741 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5742 mHandler.removeMessages(what); 5743 } else { 5744 what = MSG_DISPATCH_DRAG_EVENT; 5745 } 5746 Message msg = mHandler.obtainMessage(what, event); 5747 mHandler.sendMessage(msg); 5748 } 5749 5750 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5751 int localValue, int localChanges) { 5752 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5753 args.seq = seq; 5754 args.globalVisibility = globalVisibility; 5755 args.localValue = localValue; 5756 args.localChanges = localChanges; 5757 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5758 } 5759 5760 public void dispatchDoneAnimating() { 5761 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5762 } 5763 5764 public void dispatchCheckFocus() { 5765 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5766 // This will result in a call to checkFocus() below. 5767 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5768 } 5769 } 5770 5771 /** 5772 * Post a callback to send a 5773 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5774 * This event is send at most once every 5775 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5776 */ 5777 private void postSendWindowContentChangedCallback(View source) { 5778 if (mSendWindowContentChangedAccessibilityEvent == null) { 5779 mSendWindowContentChangedAccessibilityEvent = 5780 new SendWindowContentChangedAccessibilityEvent(); 5781 } 5782 mSendWindowContentChangedAccessibilityEvent.runOrPost(source); 5783 } 5784 5785 /** 5786 * Remove a posted callback to send a 5787 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5788 */ 5789 private void removeSendWindowContentChangedCallback() { 5790 if (mSendWindowContentChangedAccessibilityEvent != null) { 5791 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5792 } 5793 } 5794 5795 public boolean showContextMenuForChild(View originalView) { 5796 return false; 5797 } 5798 5799 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5800 return null; 5801 } 5802 5803 public void createContextMenu(ContextMenu menu) { 5804 } 5805 5806 public void childDrawableStateChanged(View child) { 5807 } 5808 5809 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5810 if (mView == null) { 5811 return false; 5812 } 5813 // Intercept accessibility focus events fired by virtual nodes to keep 5814 // track of accessibility focus position in such nodes. 5815 final int eventType = event.getEventType(); 5816 switch (eventType) { 5817 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5818 final long sourceNodeId = event.getSourceNodeId(); 5819 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5820 sourceNodeId); 5821 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5822 if (source != null) { 5823 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5824 if (provider != null) { 5825 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5826 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5827 setAccessibilityFocus(source, node); 5828 } 5829 } 5830 } break; 5831 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5832 final long sourceNodeId = event.getSourceNodeId(); 5833 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5834 sourceNodeId); 5835 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5836 if (source != null) { 5837 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5838 if (provider != null) { 5839 setAccessibilityFocus(null, null); 5840 } 5841 } 5842 } break; 5843 } 5844 mAccessibilityManager.sendAccessibilityEvent(event); 5845 return true; 5846 } 5847 5848 @Override 5849 public void childAccessibilityStateChanged(View child) { 5850 postSendWindowContentChangedCallback(child); 5851 } 5852 5853 @Override 5854 public boolean canResolveLayoutDirection() { 5855 return true; 5856 } 5857 5858 @Override 5859 public boolean isLayoutDirectionResolved() { 5860 return true; 5861 } 5862 5863 @Override 5864 public int getLayoutDirection() { 5865 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5866 } 5867 5868 @Override 5869 public boolean canResolveTextDirection() { 5870 return true; 5871 } 5872 5873 @Override 5874 public boolean isTextDirectionResolved() { 5875 return true; 5876 } 5877 5878 @Override 5879 public int getTextDirection() { 5880 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5881 } 5882 5883 @Override 5884 public boolean canResolveTextAlignment() { 5885 return true; 5886 } 5887 5888 @Override 5889 public boolean isTextAlignmentResolved() { 5890 return true; 5891 } 5892 5893 @Override 5894 public int getTextAlignment() { 5895 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5896 } 5897 5898 private View getCommonPredecessor(View first, View second) { 5899 if (mAttachInfo != null) { 5900 if (mTempHashSet == null) { 5901 mTempHashSet = new HashSet<View>(); 5902 } 5903 HashSet<View> seen = mTempHashSet; 5904 seen.clear(); 5905 View firstCurrent = first; 5906 while (firstCurrent != null) { 5907 seen.add(firstCurrent); 5908 ViewParent firstCurrentParent = firstCurrent.mParent; 5909 if (firstCurrentParent instanceof View) { 5910 firstCurrent = (View) firstCurrentParent; 5911 } else { 5912 firstCurrent = null; 5913 } 5914 } 5915 View secondCurrent = second; 5916 while (secondCurrent != null) { 5917 if (seen.contains(secondCurrent)) { 5918 seen.clear(); 5919 return secondCurrent; 5920 } 5921 ViewParent secondCurrentParent = secondCurrent.mParent; 5922 if (secondCurrentParent instanceof View) { 5923 secondCurrent = (View) secondCurrentParent; 5924 } else { 5925 secondCurrent = null; 5926 } 5927 } 5928 seen.clear(); 5929 } 5930 return null; 5931 } 5932 5933 void checkThread() { 5934 if (mThread != Thread.currentThread()) { 5935 throw new CalledFromWrongThreadException( 5936 "Only the original thread that created a view hierarchy can touch its views."); 5937 } 5938 } 5939 5940 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 5941 // ViewAncestor never intercepts touch event, so this can be a no-op 5942 } 5943 5944 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 5945 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 5946 if (rectangle != null) { 5947 mTempRect.set(rectangle); 5948 mTempRect.offset(0, -mCurScrollY); 5949 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 5950 try { 5951 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 5952 } catch (RemoteException re) { 5953 /* ignore */ 5954 } 5955 } 5956 return scrolled; 5957 } 5958 5959 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 5960 // Do nothing. 5961 } 5962 5963 void changeCanvasOpacity(boolean opaque) { 5964 // TODO(romainguy): recreate Canvas (software or hardware) to reflect the opacity change. 5965 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 5966 } 5967 5968 class TakenSurfaceHolder extends BaseSurfaceHolder { 5969 @Override 5970 public boolean onAllowLockCanvas() { 5971 return mDrawingAllowed; 5972 } 5973 5974 @Override 5975 public void onRelayoutContainer() { 5976 // Not currently interesting -- from changing between fixed and layout size. 5977 } 5978 5979 public void setFormat(int format) { 5980 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 5981 } 5982 5983 public void setType(int type) { 5984 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 5985 } 5986 5987 @Override 5988 public void onUpdateSurface() { 5989 // We take care of format and type changes on our own. 5990 throw new IllegalStateException("Shouldn't be here"); 5991 } 5992 5993 public boolean isCreating() { 5994 return mIsCreating; 5995 } 5996 5997 @Override 5998 public void setFixedSize(int width, int height) { 5999 throw new UnsupportedOperationException( 6000 "Currently only support sizing from layout"); 6001 } 6002 6003 public void setKeepScreenOn(boolean screenOn) { 6004 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6005 } 6006 } 6007 6008 static class W extends IWindow.Stub { 6009 private final WeakReference<ViewRootImpl> mViewAncestor; 6010 private final IWindowSession mWindowSession; 6011 6012 W(ViewRootImpl viewAncestor) { 6013 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6014 mWindowSession = viewAncestor.mWindowSession; 6015 } 6016 6017 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6018 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6019 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6020 if (viewAncestor != null) { 6021 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6022 visibleInsets, reportDraw, newConfig); 6023 } 6024 } 6025 6026 @Override 6027 public void moved(int newX, int newY) { 6028 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6029 if (viewAncestor != null) { 6030 viewAncestor.dispatchMoved(newX, newY); 6031 } 6032 } 6033 6034 public void dispatchAppVisibility(boolean visible) { 6035 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6036 if (viewAncestor != null) { 6037 viewAncestor.dispatchAppVisibility(visible); 6038 } 6039 } 6040 6041 public void dispatchScreenState(boolean on) { 6042 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6043 if (viewAncestor != null) { 6044 viewAncestor.dispatchScreenStateChange(on); 6045 } 6046 } 6047 6048 public void dispatchGetNewSurface() { 6049 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6050 if (viewAncestor != null) { 6051 viewAncestor.dispatchGetNewSurface(); 6052 } 6053 } 6054 6055 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6056 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6057 if (viewAncestor != null) { 6058 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6059 } 6060 } 6061 6062 private static int checkCallingPermission(String permission) { 6063 try { 6064 return ActivityManagerNative.getDefault().checkPermission( 6065 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6066 } catch (RemoteException e) { 6067 return PackageManager.PERMISSION_DENIED; 6068 } 6069 } 6070 6071 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6072 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6073 if (viewAncestor != null) { 6074 final View view = viewAncestor.mView; 6075 if (view != null) { 6076 if (checkCallingPermission(Manifest.permission.DUMP) != 6077 PackageManager.PERMISSION_GRANTED) { 6078 throw new SecurityException("Insufficient permissions to invoke" 6079 + " executeCommand() from pid=" + Binder.getCallingPid() 6080 + ", uid=" + Binder.getCallingUid()); 6081 } 6082 6083 OutputStream clientStream = null; 6084 try { 6085 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6086 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6087 } catch (IOException e) { 6088 e.printStackTrace(); 6089 } finally { 6090 if (clientStream != null) { 6091 try { 6092 clientStream.close(); 6093 } catch (IOException e) { 6094 e.printStackTrace(); 6095 } 6096 } 6097 } 6098 } 6099 } 6100 } 6101 6102 public void closeSystemDialogs(String reason) { 6103 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6104 if (viewAncestor != null) { 6105 viewAncestor.dispatchCloseSystemDialogs(reason); 6106 } 6107 } 6108 6109 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6110 boolean sync) { 6111 if (sync) { 6112 try { 6113 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6114 } catch (RemoteException e) { 6115 } 6116 } 6117 } 6118 6119 public void dispatchWallpaperCommand(String action, int x, int y, 6120 int z, Bundle extras, boolean sync) { 6121 if (sync) { 6122 try { 6123 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6124 } catch (RemoteException e) { 6125 } 6126 } 6127 } 6128 6129 /* Drag/drop */ 6130 public void dispatchDragEvent(DragEvent event) { 6131 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6132 if (viewAncestor != null) { 6133 viewAncestor.dispatchDragEvent(event); 6134 } 6135 } 6136 6137 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6138 int localValue, int localChanges) { 6139 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6140 if (viewAncestor != null) { 6141 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6142 localValue, localChanges); 6143 } 6144 } 6145 6146 public void doneAnimating() { 6147 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6148 if (viewAncestor != null) { 6149 viewAncestor.dispatchDoneAnimating(); 6150 } 6151 } 6152 } 6153 6154 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6155 public CalledFromWrongThreadException(String msg) { 6156 super(msg); 6157 } 6158 } 6159 6160 private SurfaceHolder mHolder = new SurfaceHolder() { 6161 // we only need a SurfaceHolder for opengl. it would be nice 6162 // to implement everything else though, especially the callback 6163 // support (opengl doesn't make use of it right now, but eventually 6164 // will). 6165 public Surface getSurface() { 6166 return mSurface; 6167 } 6168 6169 public boolean isCreating() { 6170 return false; 6171 } 6172 6173 public void addCallback(Callback callback) { 6174 } 6175 6176 public void removeCallback(Callback callback) { 6177 } 6178 6179 public void setFixedSize(int width, int height) { 6180 } 6181 6182 public void setSizeFromLayout() { 6183 } 6184 6185 public void setFormat(int format) { 6186 } 6187 6188 public void setType(int type) { 6189 } 6190 6191 public void setKeepScreenOn(boolean screenOn) { 6192 } 6193 6194 public Canvas lockCanvas() { 6195 return null; 6196 } 6197 6198 public Canvas lockCanvas(Rect dirty) { 6199 return null; 6200 } 6201 6202 public void unlockCanvasAndPost(Canvas canvas) { 6203 } 6204 public Rect getSurfaceFrame() { 6205 return null; 6206 } 6207 }; 6208 6209 static RunQueue getRunQueue() { 6210 RunQueue rq = sRunQueues.get(); 6211 if (rq != null) { 6212 return rq; 6213 } 6214 rq = new RunQueue(); 6215 sRunQueues.set(rq); 6216 return rq; 6217 } 6218 6219 /** 6220 * The run queue is used to enqueue pending work from Views when no Handler is 6221 * attached. The work is executed during the next call to performTraversals on 6222 * the thread. 6223 * @hide 6224 */ 6225 static final class RunQueue { 6226 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6227 6228 void post(Runnable action) { 6229 postDelayed(action, 0); 6230 } 6231 6232 void postDelayed(Runnable action, long delayMillis) { 6233 HandlerAction handlerAction = new HandlerAction(); 6234 handlerAction.action = action; 6235 handlerAction.delay = delayMillis; 6236 6237 synchronized (mActions) { 6238 mActions.add(handlerAction); 6239 } 6240 } 6241 6242 void removeCallbacks(Runnable action) { 6243 final HandlerAction handlerAction = new HandlerAction(); 6244 handlerAction.action = action; 6245 6246 synchronized (mActions) { 6247 final ArrayList<HandlerAction> actions = mActions; 6248 6249 while (actions.remove(handlerAction)) { 6250 // Keep going 6251 } 6252 } 6253 } 6254 6255 void executeActions(Handler handler) { 6256 synchronized (mActions) { 6257 final ArrayList<HandlerAction> actions = mActions; 6258 final int count = actions.size(); 6259 6260 for (int i = 0; i < count; i++) { 6261 final HandlerAction handlerAction = actions.get(i); 6262 handler.postDelayed(handlerAction.action, handlerAction.delay); 6263 } 6264 6265 actions.clear(); 6266 } 6267 } 6268 6269 private static class HandlerAction { 6270 Runnable action; 6271 long delay; 6272 6273 @Override 6274 public boolean equals(Object o) { 6275 if (this == o) return true; 6276 if (o == null || getClass() != o.getClass()) return false; 6277 6278 HandlerAction that = (HandlerAction) o; 6279 return !(action != null ? !action.equals(that.action) : that.action != null); 6280 6281 } 6282 6283 @Override 6284 public int hashCode() { 6285 int result = action != null ? action.hashCode() : 0; 6286 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6287 return result; 6288 } 6289 } 6290 } 6291 6292 /** 6293 * Class for managing the accessibility interaction connection 6294 * based on the global accessibility state. 6295 */ 6296 final class AccessibilityInteractionConnectionManager 6297 implements AccessibilityStateChangeListener { 6298 public void onAccessibilityStateChanged(boolean enabled) { 6299 if (enabled) { 6300 ensureConnection(); 6301 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6302 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6303 View focusedView = mView.findFocus(); 6304 if (focusedView != null && focusedView != mView) { 6305 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6306 } 6307 } 6308 } else { 6309 ensureNoConnection(); 6310 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6311 } 6312 } 6313 6314 public void ensureConnection() { 6315 if (mAttachInfo != null) { 6316 final boolean registered = 6317 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6318 if (!registered) { 6319 mAttachInfo.mAccessibilityWindowId = 6320 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6321 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6322 } 6323 } 6324 } 6325 6326 public void ensureNoConnection() { 6327 final boolean registered = 6328 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6329 if (registered) { 6330 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6331 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6332 } 6333 } 6334 } 6335 6336 /** 6337 * This class is an interface this ViewAncestor provides to the 6338 * AccessibilityManagerService to the latter can interact with 6339 * the view hierarchy in this ViewAncestor. 6340 */ 6341 static final class AccessibilityInteractionConnection 6342 extends IAccessibilityInteractionConnection.Stub { 6343 private final WeakReference<ViewRootImpl> mViewRootImpl; 6344 6345 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6346 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6347 } 6348 6349 @Override 6350 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6351 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6352 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6353 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6354 if (viewRootImpl != null && viewRootImpl.mView != null) { 6355 viewRootImpl.getAccessibilityInteractionController() 6356 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6357 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6358 spec); 6359 } else { 6360 // We cannot make the call and notify the caller so it does not wait. 6361 try { 6362 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6363 } catch (RemoteException re) { 6364 /* best effort - ignore */ 6365 } 6366 } 6367 } 6368 6369 @Override 6370 public void performAccessibilityAction(long accessibilityNodeId, int action, 6371 Bundle arguments, int interactionId, 6372 IAccessibilityInteractionConnectionCallback callback, int flags, 6373 int interogatingPid, long interrogatingTid) { 6374 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6375 if (viewRootImpl != null && viewRootImpl.mView != null) { 6376 viewRootImpl.getAccessibilityInteractionController() 6377 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6378 interactionId, callback, flags, interogatingPid, interrogatingTid); 6379 } else { 6380 // We cannot make the call and notify the caller so it does not wait. 6381 try { 6382 callback.setPerformAccessibilityActionResult(false, interactionId); 6383 } catch (RemoteException re) { 6384 /* best effort - ignore */ 6385 } 6386 } 6387 } 6388 6389 @Override 6390 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6391 String viewId, int interactionId, 6392 IAccessibilityInteractionConnectionCallback callback, int flags, 6393 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6394 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6395 if (viewRootImpl != null && viewRootImpl.mView != null) { 6396 viewRootImpl.getAccessibilityInteractionController() 6397 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6398 viewId, interactionId, callback, flags, interrogatingPid, 6399 interrogatingTid, spec); 6400 } else { 6401 // We cannot make the call and notify the caller so it does not wait. 6402 try { 6403 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6404 } catch (RemoteException re) { 6405 /* best effort - ignore */ 6406 } 6407 } 6408 } 6409 6410 @Override 6411 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6412 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6413 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6414 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6415 if (viewRootImpl != null && viewRootImpl.mView != null) { 6416 viewRootImpl.getAccessibilityInteractionController() 6417 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6418 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6419 spec); 6420 } else { 6421 // We cannot make the call and notify the caller so it does not wait. 6422 try { 6423 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6424 } catch (RemoteException re) { 6425 /* best effort - ignore */ 6426 } 6427 } 6428 } 6429 6430 @Override 6431 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6432 IAccessibilityInteractionConnectionCallback callback, int flags, 6433 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6434 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6435 if (viewRootImpl != null && viewRootImpl.mView != null) { 6436 viewRootImpl.getAccessibilityInteractionController() 6437 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6438 flags, interrogatingPid, interrogatingTid, spec); 6439 } else { 6440 // We cannot make the call and notify the caller so it does not wait. 6441 try { 6442 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6443 } catch (RemoteException re) { 6444 /* best effort - ignore */ 6445 } 6446 } 6447 } 6448 6449 @Override 6450 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6451 IAccessibilityInteractionConnectionCallback callback, int flags, 6452 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6453 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6454 if (viewRootImpl != null && viewRootImpl.mView != null) { 6455 viewRootImpl.getAccessibilityInteractionController() 6456 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6457 callback, flags, interrogatingPid, interrogatingTid, spec); 6458 } else { 6459 // We cannot make the call and notify the caller so it does not wait. 6460 try { 6461 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6462 } catch (RemoteException re) { 6463 /* best effort - ignore */ 6464 } 6465 } 6466 } 6467 } 6468 6469 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6470 public View mSource; 6471 public long mLastEventTimeMillis; 6472 6473 public void run() { 6474 // The accessibility may be turned off while we were waiting so check again. 6475 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6476 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6477 AccessibilityEvent event = AccessibilityEvent.obtain(); 6478 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6479 event.setContentChangeType(AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE); 6480 mSource.sendAccessibilityEventUnchecked(event); 6481 } else { 6482 mLastEventTimeMillis = 0; 6483 } 6484 // In any case reset to initial state. 6485 mSource.resetSubtreeAccessibilityStateChanged(); 6486 mSource = null; 6487 } 6488 6489 public void runOrPost(View source) { 6490 if (mSource != null) { 6491 // If there is no common predecessor, then mSource points to 6492 // a removed view, hence in this case always prefer the source. 6493 View predecessor = getCommonPredecessor(mSource, source); 6494 mSource = (predecessor != null) ? predecessor : source; 6495 return; 6496 } 6497 mSource = source; 6498 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6499 final long minEventIntevalMillis = 6500 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6501 if (timeSinceLastMillis >= minEventIntevalMillis) { 6502 mSource.removeCallbacks(this); 6503 run(); 6504 } else { 6505 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6506 } 6507 } 6508 } 6509} 6510