ViewRootImpl.java revision 1b10869f39978a864cfcc4efc73aefc312d8ed79
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.view.Surface.OutOfResourcesException; 72import android.widget.Scroller; 73 74import com.android.internal.R; 75import com.android.internal.os.SomeArgs; 76import com.android.internal.policy.PolicyManager; 77import com.android.internal.view.BaseSurfaceHolder; 78import com.android.internal.view.RootViewSurfaceTaker; 79 80import java.io.FileDescriptor; 81import java.io.IOException; 82import java.io.OutputStream; 83import java.io.PrintWriter; 84import java.lang.ref.WeakReference; 85import java.util.ArrayList; 86import java.util.HashSet; 87 88/** 89 * The top of a view hierarchy, implementing the needed protocol between View 90 * and the WindowManager. This is for the most part an internal implementation 91 * detail of {@link WindowManagerGlobal}. 92 * 93 * {@hide} 94 */ 95@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 96public final class ViewRootImpl implements ViewParent, 97 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 98 private static final String TAG = "ViewRootImpl"; 99 private static final boolean DBG = false; 100 private static final boolean LOCAL_LOGV = false; 101 /** @noinspection PointlessBooleanExpression*/ 102 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 103 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 104 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 105 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 106 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 107 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 108 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 109 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 110 private static final boolean DEBUG_FPS = false; 111 private static final boolean DEBUG_INPUT_PROCESSING = false || LOCAL_LOGV; 112 113 /** 114 * Set this system property to true to force the view hierarchy to render 115 * at 60 Hz. This can be used to measure the potential framerate. 116 */ 117 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 118 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 119 120 /** 121 * Maximum time we allow the user to roll the trackball enough to generate 122 * a key event, before resetting the counters. 123 */ 124 static final int MAX_TRACKBALL_DELAY = 250; 125 126 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 127 128 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 129 static boolean sFirstDrawComplete = false; 130 131 static final ArrayList<ComponentCallbacks> sConfigCallbacks 132 = new ArrayList<ComponentCallbacks>(); 133 134 final Context mContext; 135 final IWindowSession mWindowSession; 136 final Display mDisplay; 137 final String mBasePackageName; 138 139 final int[] mTmpLocation = new int[2]; 140 141 final TypedValue mTmpValue = new TypedValue(); 142 143 final Thread mThread; 144 145 final WindowLeaked mLocation; 146 147 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 148 149 final W mWindow; 150 151 final int mTargetSdkVersion; 152 153 int mSeq; 154 155 View mView; 156 157 View mAccessibilityFocusedHost; 158 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 159 160 int mViewVisibility; 161 boolean mAppVisible = true; 162 int mOrigWindowType = -1; 163 164 // Set to true if the owner of this window is in the stopped state, 165 // so the window should no longer be active. 166 boolean mStopped = false; 167 168 boolean mLastInCompatMode = false; 169 170 SurfaceHolder.Callback2 mSurfaceHolderCallback; 171 BaseSurfaceHolder mSurfaceHolder; 172 boolean mIsCreating; 173 boolean mDrawingAllowed; 174 175 final Region mTransparentRegion; 176 final Region mPreviousTransparentRegion; 177 178 int mWidth; 179 int mHeight; 180 Rect mDirty; 181 final Rect mCurrentDirty = new Rect(); 182 boolean mIsAnimating; 183 184 CompatibilityInfo.Translator mTranslator; 185 186 final View.AttachInfo mAttachInfo; 187 InputChannel mInputChannel; 188 InputQueue.Callback mInputQueueCallback; 189 InputQueue mInputQueue; 190 FallbackEventHandler mFallbackEventHandler; 191 Choreographer mChoreographer; 192 193 final Rect mTempRect; // used in the transaction to not thrash the heap. 194 final Rect mVisRect; // used to retrieve visible rect of focused view. 195 196 boolean mTraversalScheduled; 197 int mTraversalBarrier; 198 boolean mWillDrawSoon; 199 /** Set to true while in performTraversals for detecting when die(true) is called from internal 200 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 201 boolean mIsInTraversal; 202 boolean mFitSystemWindowsRequested; 203 boolean mLayoutRequested; 204 boolean mFirst; 205 boolean mReportNextDraw; 206 boolean mFullRedrawNeeded; 207 boolean mNewSurfaceNeeded; 208 boolean mHasHadWindowFocus; 209 boolean mLastWasImTarget; 210 boolean mWindowsAnimating; 211 boolean mDrawDuringWindowsAnimating; 212 boolean mIsDrawing; 213 int mLastSystemUiVisibility; 214 int mClientWindowLayoutFlags; 215 boolean mLastOverscanRequested; 216 217 // Pool of queued input events. 218 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 219 private QueuedInputEvent mQueuedInputEventPool; 220 private int mQueuedInputEventPoolSize; 221 222 /* Input event queue. 223 * Pending input events are input events waiting to be delivered to the input stages 224 * and handled by the application. 225 */ 226 QueuedInputEvent mPendingInputEventHead; 227 QueuedInputEvent mPendingInputEventTail; 228 int mPendingInputEventCount; 229 boolean mProcessInputEventsScheduled; 230 String mPendingInputEventQueueLengthCounterName = "pq"; 231 232 InputStage mFirstInputStage; 233 InputStage mFirstPostImeInputStage; 234 235 boolean mWindowAttributesChanged = false; 236 int mWindowAttributesChangesFlag = 0; 237 238 // These can be accessed by any thread, must be protected with a lock. 239 // Surface can never be reassigned or cleared (use Surface.clear()). 240 private final Surface mSurface = new Surface(); 241 242 boolean mAdded; 243 boolean mAddedTouchMode; 244 245 final DisplayAdjustments mDisplayAdjustments; 246 247 // These are accessed by multiple threads. 248 final Rect mWinFrame; // frame given by window manager. 249 250 final Rect mPendingOverscanInsets = new Rect(); 251 final Rect mPendingVisibleInsets = new Rect(); 252 final Rect mPendingContentInsets = new Rect(); 253 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 254 = new ViewTreeObserver.InternalInsetsInfo(); 255 256 final Rect mFitSystemWindowsInsets = new Rect(); 257 258 final Configuration mLastConfiguration = new Configuration(); 259 final Configuration mPendingConfiguration = new Configuration(); 260 261 boolean mScrollMayChange; 262 int mSoftInputMode; 263 WeakReference<View> mLastScrolledFocus; 264 int mScrollY; 265 int mCurScrollY; 266 Scroller mScroller; 267 HardwareLayer mResizeBuffer; 268 long mResizeBufferStartTime; 269 int mResizeBufferDuration; 270 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 271 private ArrayList<LayoutTransition> mPendingTransitions; 272 273 final ViewConfiguration mViewConfiguration; 274 275 /* Drag/drop */ 276 ClipDescription mDragDescription; 277 View mCurrentDragView; 278 volatile Object mLocalDragState; 279 final PointF mDragPoint = new PointF(); 280 final PointF mLastTouchPoint = new PointF(); 281 282 private boolean mProfileRendering; 283 private Choreographer.FrameCallback mRenderProfiler; 284 private boolean mRenderProfilingEnabled; 285 286 private boolean mMediaDisabled; 287 288 // Variables to track frames per second, enabled via DEBUG_FPS flag 289 private long mFpsStartTime = -1; 290 private long mFpsPrevTime = -1; 291 private int mFpsNumFrames; 292 293 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 294 295 /** 296 * see {@link #playSoundEffect(int)} 297 */ 298 AudioManager mAudioManager; 299 300 final AccessibilityManager mAccessibilityManager; 301 302 AccessibilityInteractionController mAccessibilityInteractionController; 303 304 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 305 306 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 307 308 HashSet<View> mTempHashSet; 309 310 private final int mDensity; 311 private final int mNoncompatDensity; 312 313 private boolean mInLayout = false; 314 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 315 boolean mHandlingLayoutInLayoutRequest = false; 316 317 private int mViewLayoutDirectionInitial; 318 319 /** Set to true once doDie() has been called. */ 320 private boolean mRemoved; 321 322 /** 323 * Consistency verifier for debugging purposes. 324 */ 325 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 326 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 327 new InputEventConsistencyVerifier(this, 0) : null; 328 329 static final class SystemUiVisibilityInfo { 330 int seq; 331 int globalVisibility; 332 int localValue; 333 int localChanges; 334 } 335 336 public ViewRootImpl(Context context, Display display) { 337 mContext = context; 338 mWindowSession = WindowManagerGlobal.getWindowSession(); 339 mDisplay = display; 340 mBasePackageName = context.getBasePackageName(); 341 342 mDisplayAdjustments = display.getDisplayAdjustments(); 343 344 mThread = Thread.currentThread(); 345 mLocation = new WindowLeaked(null); 346 mLocation.fillInStackTrace(); 347 mWidth = -1; 348 mHeight = -1; 349 mDirty = new Rect(); 350 mTempRect = new Rect(); 351 mVisRect = new Rect(); 352 mWinFrame = new Rect(); 353 mWindow = new W(this); 354 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 355 mViewVisibility = View.GONE; 356 mTransparentRegion = new Region(); 357 mPreviousTransparentRegion = new Region(); 358 mFirst = true; // true for the first time the view is added 359 mAdded = false; 360 mAccessibilityManager = AccessibilityManager.getInstance(context); 361 mAccessibilityInteractionConnectionManager = 362 new AccessibilityInteractionConnectionManager(); 363 mAccessibilityManager.addAccessibilityStateChangeListener( 364 mAccessibilityInteractionConnectionManager); 365 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 366 mViewConfiguration = ViewConfiguration.get(context); 367 mDensity = context.getResources().getDisplayMetrics().densityDpi; 368 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 369 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 370 mChoreographer = Choreographer.getInstance(); 371 372 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 373 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 374 loadSystemProperties(); 375 } 376 377 public static void addFirstDrawHandler(Runnable callback) { 378 synchronized (sFirstDrawHandlers) { 379 if (!sFirstDrawComplete) { 380 sFirstDrawHandlers.add(callback); 381 } 382 } 383 } 384 385 public static void addConfigCallback(ComponentCallbacks callback) { 386 synchronized (sConfigCallbacks) { 387 sConfigCallbacks.add(callback); 388 } 389 } 390 391 // FIXME for perf testing only 392 private boolean mProfile = false; 393 394 /** 395 * Call this to profile the next traversal call. 396 * FIXME for perf testing only. Remove eventually 397 */ 398 public void profile() { 399 mProfile = true; 400 } 401 402 /** 403 * Indicates whether we are in touch mode. Calling this method triggers an IPC 404 * call and should be avoided whenever possible. 405 * 406 * @return True, if the device is in touch mode, false otherwise. 407 * 408 * @hide 409 */ 410 static boolean isInTouchMode() { 411 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 412 if (windowSession != null) { 413 try { 414 return windowSession.getInTouchMode(); 415 } catch (RemoteException e) { 416 } 417 } 418 return false; 419 } 420 421 /** 422 * We have one child 423 */ 424 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 425 synchronized (this) { 426 if (mView == null) { 427 mView = view; 428 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 429 mFallbackEventHandler.setView(view); 430 mWindowAttributes.copyFrom(attrs); 431 if (mWindowAttributes.packageName == null) { 432 mWindowAttributes.packageName = mBasePackageName; 433 } 434 attrs = mWindowAttributes; 435 // Keep track of the actual window flags supplied by the client. 436 mClientWindowLayoutFlags = attrs.flags; 437 438 setAccessibilityFocus(null, null); 439 440 if (view instanceof RootViewSurfaceTaker) { 441 mSurfaceHolderCallback = 442 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 443 if (mSurfaceHolderCallback != null) { 444 mSurfaceHolder = new TakenSurfaceHolder(); 445 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 446 } 447 } 448 449 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 450 mTranslator = compatibilityInfo.getTranslator(); 451 mDisplayAdjustments.setActivityToken(attrs.token); 452 453 // If the application owns the surface, don't enable hardware acceleration 454 if (mSurfaceHolder == null) { 455 enableHardwareAcceleration(attrs); 456 } 457 458 boolean restore = false; 459 if (mTranslator != null) { 460 mSurface.setCompatibilityTranslator(mTranslator); 461 restore = true; 462 attrs.backup(); 463 mTranslator.translateWindowLayout(attrs); 464 } 465 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 466 467 if (!compatibilityInfo.supportsScreen()) { 468 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 469 mLastInCompatMode = true; 470 } 471 472 mSoftInputMode = attrs.softInputMode; 473 mWindowAttributesChanged = true; 474 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 475 mAttachInfo.mRootView = view; 476 mAttachInfo.mScalingRequired = mTranslator != null; 477 mAttachInfo.mApplicationScale = 478 mTranslator == null ? 1.0f : mTranslator.applicationScale; 479 if (panelParentView != null) { 480 mAttachInfo.mPanelParentWindowToken 481 = panelParentView.getApplicationWindowToken(); 482 } 483 mAdded = true; 484 int res; /* = WindowManagerImpl.ADD_OKAY; */ 485 486 // Schedule the first layout -before- adding to the window 487 // manager, to make sure we do the relayout before receiving 488 // any other events from the system. 489 requestLayout(); 490 if ((mWindowAttributes.inputFeatures 491 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 492 mInputChannel = new InputChannel(); 493 } 494 try { 495 mOrigWindowType = mWindowAttributes.type; 496 mAttachInfo.mRecomputeGlobalAttributes = true; 497 collectViewAttributes(); 498 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 499 getHostVisibility(), mDisplay.getDisplayId(), 500 mAttachInfo.mContentInsets, mInputChannel); 501 } catch (RemoteException e) { 502 mAdded = false; 503 mView = null; 504 mAttachInfo.mRootView = null; 505 mInputChannel = null; 506 mFallbackEventHandler.setView(null); 507 unscheduleTraversals(); 508 setAccessibilityFocus(null, null); 509 throw new RuntimeException("Adding window failed", e); 510 } finally { 511 if (restore) { 512 attrs.restore(); 513 } 514 } 515 516 if (mTranslator != null) { 517 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 518 } 519 mPendingOverscanInsets.set(0, 0, 0, 0); 520 mPendingContentInsets.set(mAttachInfo.mContentInsets); 521 mPendingVisibleInsets.set(0, 0, 0, 0); 522 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 523 if (res < WindowManagerGlobal.ADD_OKAY) { 524 mAttachInfo.mRootView = null; 525 mAdded = false; 526 mFallbackEventHandler.setView(null); 527 unscheduleTraversals(); 528 setAccessibilityFocus(null, null); 529 switch (res) { 530 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 531 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 532 throw new WindowManager.BadTokenException( 533 "Unable to add window -- token " + attrs.token 534 + " is not valid; is your activity running?"); 535 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 536 throw new WindowManager.BadTokenException( 537 "Unable to add window -- token " + attrs.token 538 + " is not for an application"); 539 case WindowManagerGlobal.ADD_APP_EXITING: 540 throw new WindowManager.BadTokenException( 541 "Unable to add window -- app for token " + attrs.token 542 + " is exiting"); 543 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 544 throw new WindowManager.BadTokenException( 545 "Unable to add window -- window " + mWindow 546 + " has already been added"); 547 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 548 // Silently ignore -- we would have just removed it 549 // right away, anyway. 550 return; 551 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 552 throw new WindowManager.BadTokenException( 553 "Unable to add window " + mWindow + 554 " -- another window of this type already exists"); 555 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 556 throw new WindowManager.BadTokenException( 557 "Unable to add window " + mWindow + 558 " -- permission denied for this window type"); 559 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 560 throw new WindowManager.InvalidDisplayException( 561 "Unable to add window " + mWindow + 562 " -- the specified display can not be found"); 563 } 564 throw new RuntimeException( 565 "Unable to add window -- unknown error code " + res); 566 } 567 568 if (view instanceof RootViewSurfaceTaker) { 569 mInputQueueCallback = 570 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 571 } 572 if (mInputChannel != null) { 573 if (mInputQueueCallback != null) { 574 mInputQueue = new InputQueue(); 575 mInputQueueCallback.onInputQueueCreated(mInputQueue); 576 } 577 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 578 Looper.myLooper()); 579 } 580 581 view.assignParent(this); 582 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 583 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 584 585 if (mAccessibilityManager.isEnabled()) { 586 mAccessibilityInteractionConnectionManager.ensureConnection(); 587 } 588 589 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 590 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 591 } 592 593 // Set up the input pipeline. 594 CharSequence counterSuffix = attrs.getTitle(); 595 InputStage syntheticInputStage = new SyntheticInputStage(); 596 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticInputStage); 597 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 598 "aq:native-post-ime:" + counterSuffix); 599 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 600 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 601 "aq:ime:" + counterSuffix); 602 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 603 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 604 "aq:native-pre-ime:" + counterSuffix); 605 606 mFirstInputStage = nativePreImeStage; 607 mFirstPostImeInputStage = earlyPostImeStage; 608 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 609 } 610 } 611 } 612 613 /** Whether the window is in local focus mode or not */ 614 private boolean isInLocalFocusMode() { 615 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 616 } 617 618 void destroyHardwareResources() { 619 invalidateDisplayLists(); 620 if (mAttachInfo.mHardwareRenderer != null) { 621 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 622 mAttachInfo.mHardwareRenderer.destroy(false); 623 } 624 } 625 626 void destroyHardwareLayers() { 627 if (mThread != Thread.currentThread()) { 628 if (mAttachInfo.mHardwareRenderer != null && 629 mAttachInfo.mHardwareRenderer.isEnabled()) { 630 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 631 } 632 } else { 633 invalidateDisplayLists(); 634 if (mAttachInfo.mHardwareRenderer != null && 635 mAttachInfo.mHardwareRenderer.isEnabled()) { 636 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 637 } 638 } 639 } 640 641 void pushHardwareLayerUpdate(HardwareLayer layer) { 642 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 643 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 644 } 645 } 646 647 void flushHardwareLayerUpdates() { 648 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled() && 649 mAttachInfo.mHardwareRenderer.validate()) { 650 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 651 } 652 } 653 654 void dispatchFlushHardwareLayerUpdates() { 655 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 656 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 657 } 658 659 public boolean attachFunctor(int functor) { 660 //noinspection SimplifiableIfStatement 661 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 662 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 663 } 664 return false; 665 } 666 667 public void detachFunctor(int functor) { 668 if (mAttachInfo.mHardwareRenderer != null) { 669 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 670 } 671 } 672 673 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 674 mAttachInfo.mHardwareAccelerated = false; 675 mAttachInfo.mHardwareAccelerationRequested = false; 676 677 // Don't enable hardware acceleration when the application is in compatibility mode 678 if (mTranslator != null) return; 679 680 // Try to enable hardware acceleration if requested 681 final boolean hardwareAccelerated = 682 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 683 684 if (hardwareAccelerated) { 685 if (!HardwareRenderer.isAvailable()) { 686 return; 687 } 688 689 // Persistent processes (including the system) should not do 690 // accelerated rendering on low-end devices. In that case, 691 // sRendererDisabled will be set. In addition, the system process 692 // itself should never do accelerated rendering. In that case, both 693 // sRendererDisabled and sSystemRendererDisabled are set. When 694 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 695 // can be used by code on the system process to escape that and enable 696 // HW accelerated drawing. (This is basically for the lock screen.) 697 698 final boolean fakeHwAccelerated = (attrs.privateFlags & 699 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 700 final boolean forceHwAccelerated = (attrs.privateFlags & 701 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 702 703 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 704 && forceHwAccelerated)) { 705 // Don't enable hardware acceleration when we're not on the main thread 706 if (!HardwareRenderer.sSystemRendererDisabled && 707 Looper.getMainLooper() != Looper.myLooper()) { 708 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 709 + "acceleration outside of the main thread, aborting"); 710 return; 711 } 712 713 if (mAttachInfo.mHardwareRenderer != null) { 714 mAttachInfo.mHardwareRenderer.destroy(true); 715 } 716 717 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 718 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 719 if (mAttachInfo.mHardwareRenderer != null) { 720 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 721 mAttachInfo.mHardwareAccelerated = 722 mAttachInfo.mHardwareAccelerationRequested = true; 723 } 724 } else if (fakeHwAccelerated) { 725 // The window had wanted to use hardware acceleration, but this 726 // is not allowed in its process. By setting this flag, it can 727 // still render as if it was accelerated. This is basically for 728 // the preview windows the window manager shows for launching 729 // applications, so they will look more like the app being launched. 730 mAttachInfo.mHardwareAccelerationRequested = true; 731 } 732 } 733 } 734 735 public View getView() { 736 return mView; 737 } 738 739 final WindowLeaked getLocation() { 740 return mLocation; 741 } 742 743 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 744 synchronized (this) { 745 int oldSoftInputMode = mWindowAttributes.softInputMode; 746 // Keep track of the actual window flags supplied by the client. 747 mClientWindowLayoutFlags = attrs.flags; 748 // preserve compatible window flag if exists. 749 int compatibleWindowFlag = mWindowAttributes.privateFlags 750 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 751 // transfer over system UI visibility values as they carry current state. 752 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 753 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 754 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 755 if ((mWindowAttributesChangesFlag 756 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 757 // Recompute system ui visibility. 758 mAttachInfo.mRecomputeGlobalAttributes = true; 759 } 760 if (mWindowAttributes.packageName == null) { 761 mWindowAttributes.packageName = mBasePackageName; 762 } 763 mWindowAttributes.privateFlags |= compatibleWindowFlag; 764 765 applyKeepScreenOnFlag(mWindowAttributes); 766 767 if (newView) { 768 mSoftInputMode = attrs.softInputMode; 769 requestLayout(); 770 } 771 // Don't lose the mode we last auto-computed. 772 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 773 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 774 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 775 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 776 | (oldSoftInputMode 777 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 778 } 779 mWindowAttributesChanged = true; 780 scheduleTraversals(); 781 } 782 } 783 784 void handleAppVisibility(boolean visible) { 785 if (mAppVisible != visible) { 786 mAppVisible = visible; 787 scheduleTraversals(); 788 } 789 } 790 791 void handleGetNewSurface() { 792 mNewSurfaceNeeded = true; 793 mFullRedrawNeeded = true; 794 scheduleTraversals(); 795 } 796 797 void handleScreenStateChange(boolean on) { 798 if (on != mAttachInfo.mScreenOn) { 799 mAttachInfo.mScreenOn = on; 800 if (mView != null) { 801 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 802 } 803 if (on) { 804 mFullRedrawNeeded = true; 805 scheduleTraversals(); 806 } 807 } 808 } 809 810 @Override 811 public void requestFitSystemWindows() { 812 checkThread(); 813 mFitSystemWindowsRequested = true; 814 scheduleTraversals(); 815 } 816 817 @Override 818 public void requestLayout() { 819 if (!mHandlingLayoutInLayoutRequest) { 820 checkThread(); 821 mLayoutRequested = true; 822 scheduleTraversals(); 823 } 824 } 825 826 @Override 827 public boolean isLayoutRequested() { 828 return mLayoutRequested; 829 } 830 831 void invalidate() { 832 mDirty.set(0, 0, mWidth, mHeight); 833 scheduleTraversals(); 834 } 835 836 void invalidateWorld(View view) { 837 view.invalidate(); 838 if (view instanceof ViewGroup) { 839 ViewGroup parent = (ViewGroup) view; 840 for (int i = 0; i < parent.getChildCount(); i++) { 841 invalidateWorld(parent.getChildAt(i)); 842 } 843 } 844 } 845 846 @Override 847 public void invalidateChild(View child, Rect dirty) { 848 invalidateChildInParent(null, dirty); 849 } 850 851 @Override 852 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 853 checkThread(); 854 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 855 856 if (dirty == null) { 857 invalidate(); 858 return null; 859 } else if (dirty.isEmpty() && !mIsAnimating) { 860 return null; 861 } 862 863 if (mCurScrollY != 0 || mTranslator != null) { 864 mTempRect.set(dirty); 865 dirty = mTempRect; 866 if (mCurScrollY != 0) { 867 dirty.offset(0, -mCurScrollY); 868 } 869 if (mTranslator != null) { 870 mTranslator.translateRectInAppWindowToScreen(dirty); 871 } 872 if (mAttachInfo.mScalingRequired) { 873 dirty.inset(-1, -1); 874 } 875 } 876 877 final Rect localDirty = mDirty; 878 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 879 mAttachInfo.mSetIgnoreDirtyState = true; 880 mAttachInfo.mIgnoreDirtyState = true; 881 } 882 883 // Add the new dirty rect to the current one 884 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 885 // Intersect with the bounds of the window to skip 886 // updates that lie outside of the visible region 887 final float appScale = mAttachInfo.mApplicationScale; 888 final boolean intersected = localDirty.intersect(0, 0, 889 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 890 if (!intersected) { 891 localDirty.setEmpty(); 892 } 893 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 894 scheduleTraversals(); 895 } 896 897 return null; 898 } 899 900 void setStopped(boolean stopped) { 901 if (mStopped != stopped) { 902 mStopped = stopped; 903 if (!stopped) { 904 scheduleTraversals(); 905 } 906 } 907 } 908 909 @Override 910 public ViewParent getParent() { 911 return null; 912 } 913 914 @Override 915 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 916 if (child != mView) { 917 throw new RuntimeException("child is not mine, honest!"); 918 } 919 // Note: don't apply scroll offset, because we want to know its 920 // visibility in the virtual canvas being given to the view hierarchy. 921 return r.intersect(0, 0, mWidth, mHeight); 922 } 923 924 @Override 925 public void bringChildToFront(View child) { 926 } 927 928 int getHostVisibility() { 929 return mAppVisible ? mView.getVisibility() : View.GONE; 930 } 931 932 void disposeResizeBuffer() { 933 if (mResizeBuffer != null && mAttachInfo.mHardwareRenderer != null) { 934 mAttachInfo.mHardwareRenderer.safelyRun(new Runnable() { 935 @Override 936 public void run() { 937 mResizeBuffer.destroy(); 938 mResizeBuffer = null; 939 } 940 }); 941 } 942 } 943 944 /** 945 * Add LayoutTransition to the list of transitions to be started in the next traversal. 946 * This list will be cleared after the transitions on the list are start()'ed. These 947 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 948 * happens during the layout phase of traversal, which we want to complete before any of the 949 * animations are started (because those animations may side-effect properties that layout 950 * depends upon, like the bounding rectangles of the affected views). So we add the transition 951 * to the list and it is started just prior to starting the drawing phase of traversal. 952 * 953 * @param transition The LayoutTransition to be started on the next traversal. 954 * 955 * @hide 956 */ 957 public void requestTransitionStart(LayoutTransition transition) { 958 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 959 if (mPendingTransitions == null) { 960 mPendingTransitions = new ArrayList<LayoutTransition>(); 961 } 962 mPendingTransitions.add(transition); 963 } 964 } 965 966 void scheduleTraversals() { 967 if (!mTraversalScheduled) { 968 mTraversalScheduled = true; 969 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 970 mChoreographer.postCallback( 971 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 972 scheduleConsumeBatchedInput(); 973 } 974 } 975 976 void unscheduleTraversals() { 977 if (mTraversalScheduled) { 978 mTraversalScheduled = false; 979 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 980 mChoreographer.removeCallbacks( 981 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 982 } 983 } 984 985 void doTraversal() { 986 if (mTraversalScheduled) { 987 mTraversalScheduled = false; 988 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 989 990 if (mProfile) { 991 Debug.startMethodTracing("ViewAncestor"); 992 } 993 994 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 995 try { 996 performTraversals(); 997 } finally { 998 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 999 } 1000 1001 if (mProfile) { 1002 Debug.stopMethodTracing(); 1003 mProfile = false; 1004 } 1005 } 1006 } 1007 1008 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1009 // Update window's global keep screen on flag: if a view has requested 1010 // that the screen be kept on, then it is always set; otherwise, it is 1011 // set to whatever the client last requested for the global state. 1012 if (mAttachInfo.mKeepScreenOn) { 1013 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1014 } else { 1015 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1016 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1017 } 1018 } 1019 1020 private boolean collectViewAttributes() { 1021 final View.AttachInfo attachInfo = mAttachInfo; 1022 if (attachInfo.mRecomputeGlobalAttributes) { 1023 //Log.i(TAG, "Computing view hierarchy attributes!"); 1024 attachInfo.mRecomputeGlobalAttributes = false; 1025 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1026 attachInfo.mKeepScreenOn = false; 1027 attachInfo.mSystemUiVisibility = 0; 1028 attachInfo.mHasSystemUiListeners = false; 1029 mView.dispatchCollectViewAttributes(attachInfo, 0); 1030 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1031 WindowManager.LayoutParams params = mWindowAttributes; 1032 attachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1033 if (attachInfo.mKeepScreenOn != oldScreenOn 1034 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1035 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1036 applyKeepScreenOnFlag(params); 1037 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1038 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1039 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1040 return true; 1041 } 1042 } 1043 return false; 1044 } 1045 1046 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1047 int vis = 0; 1048 // Translucent decor window flags imply stable system ui visibility. 1049 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1050 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1051 } 1052 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1053 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1054 } 1055 return vis; 1056 } 1057 1058 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1059 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1060 int childWidthMeasureSpec; 1061 int childHeightMeasureSpec; 1062 boolean windowSizeMayChange = false; 1063 1064 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1065 "Measuring " + host + " in display " + desiredWindowWidth 1066 + "x" + desiredWindowHeight + "..."); 1067 1068 boolean goodMeasure = false; 1069 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1070 // On large screens, we don't want to allow dialogs to just 1071 // stretch to fill the entire width of the screen to display 1072 // one line of text. First try doing the layout at a smaller 1073 // size to see if it will fit. 1074 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1075 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1076 int baseSize = 0; 1077 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1078 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1079 } 1080 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1081 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1082 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1083 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1084 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1085 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1086 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1087 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1088 goodMeasure = true; 1089 } else { 1090 // Didn't fit in that size... try expanding a bit. 1091 baseSize = (baseSize+desiredWindowWidth)/2; 1092 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1093 + baseSize); 1094 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1095 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1096 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1097 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1098 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1099 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1100 goodMeasure = true; 1101 } 1102 } 1103 } 1104 } 1105 1106 if (!goodMeasure) { 1107 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1108 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1109 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1110 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1111 windowSizeMayChange = true; 1112 } 1113 } 1114 1115 if (DBG) { 1116 System.out.println("======================================"); 1117 System.out.println("performTraversals -- after measure"); 1118 host.debug(); 1119 } 1120 1121 return windowSizeMayChange; 1122 } 1123 1124 private void performTraversals() { 1125 // cache mView since it is used so much below... 1126 final View host = mView; 1127 1128 if (DBG) { 1129 System.out.println("======================================"); 1130 System.out.println("performTraversals"); 1131 host.debug(); 1132 } 1133 1134 if (host == null || !mAdded) 1135 return; 1136 1137 mIsInTraversal = true; 1138 mWillDrawSoon = true; 1139 boolean windowSizeMayChange = false; 1140 boolean newSurface = false; 1141 boolean surfaceChanged = false; 1142 WindowManager.LayoutParams lp = mWindowAttributes; 1143 1144 int desiredWindowWidth; 1145 int desiredWindowHeight; 1146 1147 final View.AttachInfo attachInfo = mAttachInfo; 1148 1149 final int viewVisibility = getHostVisibility(); 1150 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1151 || mNewSurfaceNeeded; 1152 1153 WindowManager.LayoutParams params = null; 1154 if (mWindowAttributesChanged) { 1155 mWindowAttributesChanged = false; 1156 surfaceChanged = true; 1157 params = lp; 1158 } 1159 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1160 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1161 params = lp; 1162 mFullRedrawNeeded = true; 1163 mLayoutRequested = true; 1164 if (mLastInCompatMode) { 1165 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1166 mLastInCompatMode = false; 1167 } else { 1168 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1169 mLastInCompatMode = true; 1170 } 1171 } 1172 1173 mWindowAttributesChangesFlag = 0; 1174 1175 Rect frame = mWinFrame; 1176 if (mFirst) { 1177 mFullRedrawNeeded = true; 1178 mLayoutRequested = true; 1179 1180 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1181 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1182 // NOTE -- system code, won't try to do compat mode. 1183 Point size = new Point(); 1184 mDisplay.getRealSize(size); 1185 desiredWindowWidth = size.x; 1186 desiredWindowHeight = size.y; 1187 } else { 1188 DisplayMetrics packageMetrics = 1189 mView.getContext().getResources().getDisplayMetrics(); 1190 desiredWindowWidth = packageMetrics.widthPixels; 1191 desiredWindowHeight = packageMetrics.heightPixels; 1192 } 1193 1194 // For the very first time, tell the view hierarchy that it 1195 // is attached to the window. Note that at this point the surface 1196 // object is not initialized to its backing store, but soon it 1197 // will be (assuming the window is visible). 1198 attachInfo.mSurface = mSurface; 1199 // We used to use the following condition to choose 32 bits drawing caches: 1200 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1201 // However, windows are now always 32 bits by default, so choose 32 bits 1202 attachInfo.mUse32BitDrawingCache = true; 1203 attachInfo.mHasWindowFocus = false; 1204 attachInfo.mWindowVisibility = viewVisibility; 1205 attachInfo.mRecomputeGlobalAttributes = false; 1206 viewVisibilityChanged = false; 1207 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1208 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1209 // Set the layout direction if it has not been set before (inherit is the default) 1210 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1211 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1212 } 1213 host.dispatchAttachedToWindow(attachInfo, 0); 1214 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1215 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1216 host.fitSystemWindows(mFitSystemWindowsInsets); 1217 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1218 1219 } else { 1220 desiredWindowWidth = frame.width(); 1221 desiredWindowHeight = frame.height(); 1222 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1223 if (DEBUG_ORIENTATION) Log.v(TAG, 1224 "View " + host + " resized to: " + frame); 1225 mFullRedrawNeeded = true; 1226 mLayoutRequested = true; 1227 windowSizeMayChange = true; 1228 } 1229 } 1230 1231 if (viewVisibilityChanged) { 1232 attachInfo.mWindowVisibility = viewVisibility; 1233 host.dispatchWindowVisibilityChanged(viewVisibility); 1234 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1235 destroyHardwareResources(); 1236 } 1237 if (viewVisibility == View.GONE) { 1238 // After making a window gone, we will count it as being 1239 // shown for the first time the next time it gets focus. 1240 mHasHadWindowFocus = false; 1241 } 1242 } 1243 1244 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1245 getRunQueue().executeActions(attachInfo.mHandler); 1246 1247 boolean insetsChanged = false; 1248 1249 boolean layoutRequested = mLayoutRequested && !mStopped; 1250 if (layoutRequested) { 1251 1252 final Resources res = mView.getContext().getResources(); 1253 1254 if (mFirst) { 1255 // make sure touch mode code executes by setting cached value 1256 // to opposite of the added touch mode. 1257 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1258 ensureTouchModeLocally(mAddedTouchMode); 1259 } else { 1260 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1261 insetsChanged = true; 1262 } 1263 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1264 insetsChanged = true; 1265 } 1266 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1267 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1268 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1269 + mAttachInfo.mVisibleInsets); 1270 } 1271 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1272 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1273 windowSizeMayChange = true; 1274 1275 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1276 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1277 // NOTE -- system code, won't try to do compat mode. 1278 Point size = new Point(); 1279 mDisplay.getRealSize(size); 1280 desiredWindowWidth = size.x; 1281 desiredWindowHeight = size.y; 1282 } else { 1283 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1284 desiredWindowWidth = packageMetrics.widthPixels; 1285 desiredWindowHeight = packageMetrics.heightPixels; 1286 } 1287 } 1288 } 1289 1290 // Ask host how big it wants to be 1291 windowSizeMayChange |= measureHierarchy(host, lp, res, 1292 desiredWindowWidth, desiredWindowHeight); 1293 } 1294 1295 if (collectViewAttributes()) { 1296 params = lp; 1297 } 1298 if (attachInfo.mForceReportNewAttributes) { 1299 attachInfo.mForceReportNewAttributes = false; 1300 params = lp; 1301 } 1302 1303 if (mFirst || attachInfo.mViewVisibilityChanged) { 1304 attachInfo.mViewVisibilityChanged = false; 1305 int resizeMode = mSoftInputMode & 1306 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1307 // If we are in auto resize mode, then we need to determine 1308 // what mode to use now. 1309 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1310 final int N = attachInfo.mScrollContainers.size(); 1311 for (int i=0; i<N; i++) { 1312 if (attachInfo.mScrollContainers.get(i).isShown()) { 1313 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1314 } 1315 } 1316 if (resizeMode == 0) { 1317 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1318 } 1319 if ((lp.softInputMode & 1320 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1321 lp.softInputMode = (lp.softInputMode & 1322 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1323 resizeMode; 1324 params = lp; 1325 } 1326 } 1327 } 1328 1329 if (params != null) { 1330 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1331 if (!PixelFormat.formatHasAlpha(params.format)) { 1332 params.format = PixelFormat.TRANSLUCENT; 1333 } 1334 } 1335 mAttachInfo.mOverscanRequested = (params.flags 1336 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1337 } 1338 1339 if (mFitSystemWindowsRequested) { 1340 mFitSystemWindowsRequested = false; 1341 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1342 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1343 host.fitSystemWindows(mFitSystemWindowsInsets); 1344 if (mLayoutRequested) { 1345 // Short-circuit catching a new layout request here, so 1346 // we don't need to go through two layout passes when things 1347 // change due to fitting system windows, which can happen a lot. 1348 windowSizeMayChange |= measureHierarchy(host, lp, 1349 mView.getContext().getResources(), 1350 desiredWindowWidth, desiredWindowHeight); 1351 } 1352 } 1353 1354 if (layoutRequested) { 1355 // Clear this now, so that if anything requests a layout in the 1356 // rest of this function we will catch it and re-run a full 1357 // layout pass. 1358 mLayoutRequested = false; 1359 } 1360 1361 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1362 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1363 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1364 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1365 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1366 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1367 1368 // Determine whether to compute insets. 1369 // If there are no inset listeners remaining then we may still need to compute 1370 // insets in case the old insets were non-empty and must be reset. 1371 final boolean computesInternalInsets = 1372 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1373 || attachInfo.mHasNonEmptyGivenInternalInsets; 1374 1375 boolean insetsPending = false; 1376 int relayoutResult = 0; 1377 1378 if (mFirst || windowShouldResize || insetsChanged || 1379 viewVisibilityChanged || params != null) { 1380 1381 if (viewVisibility == View.VISIBLE) { 1382 // If this window is giving internal insets to the window 1383 // manager, and it is being added or changing its visibility, 1384 // then we want to first give the window manager "fake" 1385 // insets to cause it to effectively ignore the content of 1386 // the window during layout. This avoids it briefly causing 1387 // other windows to resize/move based on the raw frame of the 1388 // window, waiting until we can finish laying out this window 1389 // and get back to the window manager with the ultimately 1390 // computed insets. 1391 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1392 } 1393 1394 if (mSurfaceHolder != null) { 1395 mSurfaceHolder.mSurfaceLock.lock(); 1396 mDrawingAllowed = true; 1397 } 1398 1399 boolean hwInitialized = false; 1400 boolean contentInsetsChanged = false; 1401 boolean hadSurface = mSurface.isValid(); 1402 1403 try { 1404 if (DEBUG_LAYOUT) { 1405 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1406 host.getMeasuredHeight() + ", params=" + params); 1407 } 1408 1409 final int surfaceGenerationId = mSurface.getGenerationId(); 1410 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1411 if (!mDrawDuringWindowsAnimating && 1412 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1413 mWindowsAnimating = true; 1414 } 1415 1416 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1417 + " overscan=" + mPendingOverscanInsets.toShortString() 1418 + " content=" + mPendingContentInsets.toShortString() 1419 + " visible=" + mPendingVisibleInsets.toShortString() 1420 + " surface=" + mSurface); 1421 1422 if (mPendingConfiguration.seq != 0) { 1423 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1424 + mPendingConfiguration); 1425 updateConfiguration(mPendingConfiguration, !mFirst); 1426 mPendingConfiguration.seq = 0; 1427 } 1428 1429 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1430 mAttachInfo.mOverscanInsets); 1431 contentInsetsChanged = !mPendingContentInsets.equals( 1432 mAttachInfo.mContentInsets); 1433 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1434 mAttachInfo.mVisibleInsets); 1435 if (contentInsetsChanged) { 1436 if (mWidth > 0 && mHeight > 0 && lp != null && 1437 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1438 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1439 mSurface != null && mSurface.isValid() && 1440 !mAttachInfo.mTurnOffWindowResizeAnim && 1441 mAttachInfo.mHardwareRenderer != null && 1442 mAttachInfo.mHardwareRenderer.isEnabled() && 1443 mAttachInfo.mHardwareRenderer.validate() && 1444 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1445 1446 disposeResizeBuffer(); 1447 1448 boolean completed = false; 1449 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1450 HardwareCanvas layerCanvas = null; 1451 try { 1452 if (mResizeBuffer == null) { 1453 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1454 mWidth, mHeight, false); 1455 } else if (mResizeBuffer.getWidth() != mWidth || 1456 mResizeBuffer.getHeight() != mHeight) { 1457 mResizeBuffer.resize(mWidth, mHeight); 1458 } 1459 // TODO: should handle create/resize failure 1460 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1461 final int restoreCount = layerCanvas.save(); 1462 1463 int yoff; 1464 final boolean scrolling = mScroller != null 1465 && mScroller.computeScrollOffset(); 1466 if (scrolling) { 1467 yoff = mScroller.getCurrY(); 1468 mScroller.abortAnimation(); 1469 } else { 1470 yoff = mScrollY; 1471 } 1472 1473 layerCanvas.translate(0, -yoff); 1474 if (mTranslator != null) { 1475 mTranslator.translateCanvas(layerCanvas); 1476 } 1477 1478 DisplayList displayList = mView.mDisplayList; 1479 if (displayList != null && displayList.isValid()) { 1480 layerCanvas.drawDisplayList(displayList, null, 1481 DisplayList.FLAG_CLIP_CHILDREN); 1482 } else { 1483 mView.draw(layerCanvas); 1484 } 1485 1486 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1487 1488 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1489 mResizeBufferDuration = mView.getResources().getInteger( 1490 com.android.internal.R.integer.config_mediumAnimTime); 1491 completed = true; 1492 1493 layerCanvas.restoreToCount(restoreCount); 1494 } catch (OutOfMemoryError e) { 1495 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1496 } finally { 1497 if (mResizeBuffer != null) { 1498 mResizeBuffer.end(hwRendererCanvas); 1499 if (!completed) { 1500 disposeResizeBuffer(); 1501 } 1502 } 1503 } 1504 } 1505 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1506 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1507 + mAttachInfo.mContentInsets); 1508 } 1509 if (overscanInsetsChanged) { 1510 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1511 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1512 + mAttachInfo.mOverscanInsets); 1513 // Need to relayout with content insets. 1514 contentInsetsChanged = true; 1515 } 1516 if (contentInsetsChanged || mLastSystemUiVisibility != 1517 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1518 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1519 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1520 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1521 mFitSystemWindowsRequested = false; 1522 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1523 host.fitSystemWindows(mFitSystemWindowsInsets); 1524 } 1525 if (visibleInsetsChanged) { 1526 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1527 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1528 + mAttachInfo.mVisibleInsets); 1529 } 1530 1531 if (!hadSurface) { 1532 if (mSurface.isValid()) { 1533 // If we are creating a new surface, then we need to 1534 // completely redraw it. Also, when we get to the 1535 // point of drawing it we will hold off and schedule 1536 // a new traversal instead. This is so we can tell the 1537 // window manager about all of the windows being displayed 1538 // before actually drawing them, so it can display then 1539 // all at once. 1540 newSurface = true; 1541 mFullRedrawNeeded = true; 1542 mPreviousTransparentRegion.setEmpty(); 1543 1544 if (mAttachInfo.mHardwareRenderer != null) { 1545 try { 1546 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1547 mHolder.getSurface()); 1548 } catch (OutOfResourcesException e) { 1549 handleOutOfResourcesException(e); 1550 return; 1551 } 1552 } 1553 } 1554 } else if (!mSurface.isValid()) { 1555 // If the surface has been removed, then reset the scroll 1556 // positions. 1557 if (mLastScrolledFocus != null) { 1558 mLastScrolledFocus.clear(); 1559 } 1560 mScrollY = mCurScrollY = 0; 1561 if (mScroller != null) { 1562 mScroller.abortAnimation(); 1563 } 1564 disposeResizeBuffer(); 1565 // Our surface is gone 1566 if (mAttachInfo.mHardwareRenderer != null && 1567 mAttachInfo.mHardwareRenderer.isEnabled()) { 1568 mAttachInfo.mHardwareRenderer.destroy(true); 1569 } 1570 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1571 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1572 mFullRedrawNeeded = true; 1573 try { 1574 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1575 } catch (OutOfResourcesException e) { 1576 handleOutOfResourcesException(e); 1577 return; 1578 } 1579 } 1580 } catch (RemoteException e) { 1581 } 1582 1583 if (DEBUG_ORIENTATION) Log.v( 1584 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1585 1586 attachInfo.mWindowLeft = frame.left; 1587 attachInfo.mWindowTop = frame.top; 1588 1589 // !!FIXME!! This next section handles the case where we did not get the 1590 // window size we asked for. We should avoid this by getting a maximum size from 1591 // the window session beforehand. 1592 if (mWidth != frame.width() || mHeight != frame.height()) { 1593 mWidth = frame.width(); 1594 mHeight = frame.height(); 1595 } 1596 1597 if (mSurfaceHolder != null) { 1598 // The app owns the surface; tell it about what is going on. 1599 if (mSurface.isValid()) { 1600 // XXX .copyFrom() doesn't work! 1601 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1602 mSurfaceHolder.mSurface = mSurface; 1603 } 1604 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1605 mSurfaceHolder.mSurfaceLock.unlock(); 1606 if (mSurface.isValid()) { 1607 if (!hadSurface) { 1608 mSurfaceHolder.ungetCallbacks(); 1609 1610 mIsCreating = true; 1611 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1612 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1613 if (callbacks != null) { 1614 for (SurfaceHolder.Callback c : callbacks) { 1615 c.surfaceCreated(mSurfaceHolder); 1616 } 1617 } 1618 surfaceChanged = true; 1619 } 1620 if (surfaceChanged) { 1621 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1622 lp.format, mWidth, mHeight); 1623 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1624 if (callbacks != null) { 1625 for (SurfaceHolder.Callback c : callbacks) { 1626 c.surfaceChanged(mSurfaceHolder, lp.format, 1627 mWidth, mHeight); 1628 } 1629 } 1630 } 1631 mIsCreating = false; 1632 } else if (hadSurface) { 1633 mSurfaceHolder.ungetCallbacks(); 1634 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1635 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1636 if (callbacks != null) { 1637 for (SurfaceHolder.Callback c : callbacks) { 1638 c.surfaceDestroyed(mSurfaceHolder); 1639 } 1640 } 1641 mSurfaceHolder.mSurfaceLock.lock(); 1642 try { 1643 mSurfaceHolder.mSurface = new Surface(); 1644 } finally { 1645 mSurfaceHolder.mSurfaceLock.unlock(); 1646 } 1647 } 1648 } 1649 1650 if (mAttachInfo.mHardwareRenderer != null && 1651 mAttachInfo.mHardwareRenderer.isEnabled()) { 1652 if (hwInitialized || 1653 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1654 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1655 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1656 if (!hwInitialized) { 1657 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1658 mFullRedrawNeeded = true; 1659 } 1660 } 1661 } 1662 1663 if (!mStopped) { 1664 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1665 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1666 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1667 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1668 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1669 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1670 1671 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1672 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1673 + " mHeight=" + mHeight 1674 + " measuredHeight=" + host.getMeasuredHeight() 1675 + " coveredInsetsChanged=" + contentInsetsChanged); 1676 1677 // Ask host how big it wants to be 1678 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1679 1680 // Implementation of weights from WindowManager.LayoutParams 1681 // We just grow the dimensions as needed and re-measure if 1682 // needs be 1683 int width = host.getMeasuredWidth(); 1684 int height = host.getMeasuredHeight(); 1685 boolean measureAgain = false; 1686 1687 if (lp.horizontalWeight > 0.0f) { 1688 width += (int) ((mWidth - width) * lp.horizontalWeight); 1689 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1690 MeasureSpec.EXACTLY); 1691 measureAgain = true; 1692 } 1693 if (lp.verticalWeight > 0.0f) { 1694 height += (int) ((mHeight - height) * lp.verticalWeight); 1695 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1696 MeasureSpec.EXACTLY); 1697 measureAgain = true; 1698 } 1699 1700 if (measureAgain) { 1701 if (DEBUG_LAYOUT) Log.v(TAG, 1702 "And hey let's measure once more: width=" + width 1703 + " height=" + height); 1704 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1705 } 1706 1707 layoutRequested = true; 1708 } 1709 } 1710 } else { 1711 // Not the first pass and no window/insets/visibility change but the window 1712 // may have moved and we need check that and if so to update the left and right 1713 // in the attach info. We translate only the window frame since on window move 1714 // the window manager tells us only for the new frame but the insets are the 1715 // same and we do not want to translate them more than once. 1716 1717 // TODO: Well, we are checking whether the frame has changed similarly 1718 // to how this is done for the insets. This is however incorrect since 1719 // the insets and the frame are translated. For example, the old frame 1720 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1721 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1722 // true since we are comparing a not translated value to a translated one. 1723 // This scenario is rare but we may want to fix that. 1724 1725 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1726 || attachInfo.mWindowTop != frame.top); 1727 if (windowMoved) { 1728 if (mTranslator != null) { 1729 mTranslator.translateRectInScreenToAppWinFrame(frame); 1730 } 1731 attachInfo.mWindowLeft = frame.left; 1732 attachInfo.mWindowTop = frame.top; 1733 } 1734 } 1735 1736 final boolean didLayout = layoutRequested && !mStopped; 1737 boolean triggerGlobalLayoutListener = didLayout 1738 || attachInfo.mRecomputeGlobalAttributes; 1739 if (didLayout) { 1740 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1741 1742 // By this point all views have been sized and positioned 1743 // We can compute the transparent area 1744 1745 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1746 // start out transparent 1747 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1748 host.getLocationInWindow(mTmpLocation); 1749 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1750 mTmpLocation[0] + host.mRight - host.mLeft, 1751 mTmpLocation[1] + host.mBottom - host.mTop); 1752 1753 host.gatherTransparentRegion(mTransparentRegion); 1754 if (mTranslator != null) { 1755 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1756 } 1757 1758 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1759 mPreviousTransparentRegion.set(mTransparentRegion); 1760 mFullRedrawNeeded = true; 1761 // reconfigure window manager 1762 try { 1763 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1764 } catch (RemoteException e) { 1765 } 1766 } 1767 } 1768 1769 if (DBG) { 1770 System.out.println("======================================"); 1771 System.out.println("performTraversals -- after setFrame"); 1772 host.debug(); 1773 } 1774 } 1775 1776 if (triggerGlobalLayoutListener) { 1777 attachInfo.mRecomputeGlobalAttributes = false; 1778 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1779 } 1780 1781 if (computesInternalInsets) { 1782 // Clear the original insets. 1783 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1784 insets.reset(); 1785 1786 // Compute new insets in place. 1787 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1788 attachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1789 1790 // Tell the window manager. 1791 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1792 mLastGivenInsets.set(insets); 1793 1794 // Translate insets to screen coordinates if needed. 1795 final Rect contentInsets; 1796 final Rect visibleInsets; 1797 final Region touchableRegion; 1798 if (mTranslator != null) { 1799 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1800 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1801 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1802 } else { 1803 contentInsets = insets.contentInsets; 1804 visibleInsets = insets.visibleInsets; 1805 touchableRegion = insets.touchableRegion; 1806 } 1807 1808 try { 1809 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1810 contentInsets, visibleInsets, touchableRegion); 1811 } catch (RemoteException e) { 1812 } 1813 } 1814 } 1815 1816 boolean skipDraw = false; 1817 1818 if (mFirst) { 1819 // handle first focus request 1820 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1821 + mView.hasFocus()); 1822 if (mView != null) { 1823 if (!mView.hasFocus()) { 1824 mView.requestFocus(View.FOCUS_FORWARD); 1825 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1826 + mView.findFocus()); 1827 } else { 1828 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1829 + mView.findFocus()); 1830 } 1831 } 1832 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1833 // The first time we relayout the window, if the system is 1834 // doing window animations, we want to hold of on any future 1835 // draws until the animation is done. 1836 mWindowsAnimating = true; 1837 } 1838 } else if (mWindowsAnimating) { 1839 skipDraw = true; 1840 } 1841 1842 mFirst = false; 1843 mWillDrawSoon = false; 1844 mNewSurfaceNeeded = false; 1845 mViewVisibility = viewVisibility; 1846 1847 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1848 final boolean imTarget = WindowManager.LayoutParams 1849 .mayUseInputMethod(mWindowAttributes.flags); 1850 if (imTarget != mLastWasImTarget) { 1851 mLastWasImTarget = imTarget; 1852 InputMethodManager imm = InputMethodManager.peekInstance(); 1853 if (imm != null && imTarget) { 1854 imm.startGettingWindowFocus(mView); 1855 imm.onWindowFocus(mView, mView.findFocus(), 1856 mWindowAttributes.softInputMode, 1857 !mHasHadWindowFocus, mWindowAttributes.flags); 1858 } 1859 } 1860 } 1861 1862 // Remember if we must report the next draw. 1863 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1864 mReportNextDraw = true; 1865 } 1866 1867 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1868 viewVisibility != View.VISIBLE; 1869 1870 if (!cancelDraw && !newSurface) { 1871 if (!skipDraw || mReportNextDraw) { 1872 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1873 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1874 mPendingTransitions.get(i).startChangingAnimations(); 1875 } 1876 mPendingTransitions.clear(); 1877 } 1878 1879 performDraw(); 1880 } 1881 } else { 1882 if (viewVisibility == View.VISIBLE) { 1883 // Try again 1884 scheduleTraversals(); 1885 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1886 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1887 mPendingTransitions.get(i).endChangingAnimations(); 1888 } 1889 mPendingTransitions.clear(); 1890 } 1891 } 1892 1893 mIsInTraversal = false; 1894 } 1895 1896 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1897 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1898 try { 1899 if (!mWindowSession.outOfMemory(mWindow) && 1900 Process.myUid() != Process.SYSTEM_UID) { 1901 Slog.w(TAG, "No processes killed for memory; killing self"); 1902 Process.killProcess(Process.myPid()); 1903 } 1904 } catch (RemoteException ex) { 1905 } 1906 mLayoutRequested = true; // ask wm for a new surface next time. 1907 } 1908 1909 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1910 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1911 try { 1912 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1913 } finally { 1914 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1915 } 1916 } 1917 1918 /** 1919 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1920 * is currently undergoing a layout pass. 1921 * 1922 * @return whether the view hierarchy is currently undergoing a layout pass 1923 */ 1924 boolean isInLayout() { 1925 return mInLayout; 1926 } 1927 1928 /** 1929 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1930 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1931 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1932 * all children in that container hierarchy are measured and laid out at the end of the layout 1933 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1934 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1935 * we check all of those views to see if any still have pending layout requests, which 1936 * indicates that they were not correctly handled by their container hierarchy. If that is 1937 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1938 * to blank containers, and force a second request/measure/layout pass in this frame. If 1939 * more requestLayout() calls are received during that second layout pass, we post those 1940 * requests to the next frame to avoid possible infinite loops. 1941 * 1942 * <p>The return value from this method indicates whether the request should proceed 1943 * (if it is a request during the first layout pass) or should be skipped and posted to the 1944 * next frame (if it is a request during the second layout pass).</p> 1945 * 1946 * @param view the view that requested the layout. 1947 * 1948 * @return true if request should proceed, false otherwise. 1949 */ 1950 boolean requestLayoutDuringLayout(final View view) { 1951 if (view.mParent == null || view.mAttachInfo == null) { 1952 // Would not normally trigger another layout, so just let it pass through as usual 1953 return true; 1954 } 1955 if (!mLayoutRequesters.contains(view)) { 1956 mLayoutRequesters.add(view); 1957 } 1958 if (!mHandlingLayoutInLayoutRequest) { 1959 // Let the request proceed normally; it will be processed in a second layout pass 1960 // if necessary 1961 return true; 1962 } else { 1963 // Don't let the request proceed during the second layout pass. 1964 // It will post to the next frame instead. 1965 return false; 1966 } 1967 } 1968 1969 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1970 int desiredWindowHeight) { 1971 mLayoutRequested = false; 1972 mScrollMayChange = true; 1973 mInLayout = true; 1974 1975 final View host = mView; 1976 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1977 Log.v(TAG, "Laying out " + host + " to (" + 1978 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1979 } 1980 1981 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1982 try { 1983 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1984 1985 mInLayout = false; 1986 int numViewsRequestingLayout = mLayoutRequesters.size(); 1987 if (numViewsRequestingLayout > 0) { 1988 // requestLayout() was called during layout. 1989 // If no layout-request flags are set on the requesting views, there is no problem. 1990 // If some requests are still pending, then we need to clear those flags and do 1991 // a full request/measure/layout pass to handle this situation. 1992 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1993 false); 1994 if (validLayoutRequesters != null) { 1995 // Set this flag to indicate that any further requests are happening during 1996 // the second pass, which may result in posting those requests to the next 1997 // frame instead 1998 mHandlingLayoutInLayoutRequest = true; 1999 2000 // Process fresh layout requests, then measure and layout 2001 int numValidRequests = validLayoutRequesters.size(); 2002 for (int i = 0; i < numValidRequests; ++i) { 2003 final View view = validLayoutRequesters.get(i); 2004 Log.w("View", "requestLayout() improperly called by " + view + 2005 " during layout: running second layout pass"); 2006 view.requestLayout(); 2007 } 2008 measureHierarchy(host, lp, mView.getContext().getResources(), 2009 desiredWindowWidth, desiredWindowHeight); 2010 mInLayout = true; 2011 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2012 2013 mHandlingLayoutInLayoutRequest = false; 2014 2015 // Check the valid requests again, this time without checking/clearing the 2016 // layout flags, since requests happening during the second pass get noop'd 2017 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2018 if (validLayoutRequesters != null) { 2019 final ArrayList<View> finalRequesters = validLayoutRequesters; 2020 // Post second-pass requests to the next frame 2021 getRunQueue().post(new Runnable() { 2022 @Override 2023 public void run() { 2024 int numValidRequests = finalRequesters.size(); 2025 for (int i = 0; i < numValidRequests; ++i) { 2026 final View view = finalRequesters.get(i); 2027 Log.w("View", "requestLayout() improperly called by " + view + 2028 " during second layout pass: posting in next frame"); 2029 view.requestLayout(); 2030 } 2031 } 2032 }); 2033 } 2034 } 2035 2036 } 2037 } finally { 2038 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2039 } 2040 mInLayout = false; 2041 } 2042 2043 /** 2044 * This method is called during layout when there have been calls to requestLayout() during 2045 * layout. It walks through the list of views that requested layout to determine which ones 2046 * still need it, based on visibility in the hierarchy and whether they have already been 2047 * handled (as is usually the case with ListView children). 2048 * 2049 * @param layoutRequesters The list of views that requested layout during layout 2050 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2051 * If so, the FORCE_LAYOUT flag was not set on requesters. 2052 * @return A list of the actual views that still need to be laid out. 2053 */ 2054 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2055 boolean secondLayoutRequests) { 2056 2057 int numViewsRequestingLayout = layoutRequesters.size(); 2058 ArrayList<View> validLayoutRequesters = null; 2059 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2060 View view = layoutRequesters.get(i); 2061 if (view != null && view.mAttachInfo != null && view.mParent != null && 2062 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2063 View.PFLAG_FORCE_LAYOUT)) { 2064 boolean gone = false; 2065 View parent = view; 2066 // Only trigger new requests for views in a non-GONE hierarchy 2067 while (parent != null) { 2068 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2069 gone = true; 2070 break; 2071 } 2072 if (parent.mParent instanceof View) { 2073 parent = (View) parent.mParent; 2074 } else { 2075 parent = null; 2076 } 2077 } 2078 if (!gone) { 2079 if (validLayoutRequesters == null) { 2080 validLayoutRequesters = new ArrayList<View>(); 2081 } 2082 validLayoutRequesters.add(view); 2083 } 2084 } 2085 } 2086 if (!secondLayoutRequests) { 2087 // If we're checking the layout flags, then we need to clean them up also 2088 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2089 View view = layoutRequesters.get(i); 2090 while (view != null && 2091 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2092 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2093 if (view.mParent instanceof View) { 2094 view = (View) view.mParent; 2095 } else { 2096 view = null; 2097 } 2098 } 2099 } 2100 } 2101 layoutRequesters.clear(); 2102 return validLayoutRequesters; 2103 } 2104 2105 @Override 2106 public void requestTransparentRegion(View child) { 2107 // the test below should not fail unless someone is messing with us 2108 checkThread(); 2109 if (mView == child) { 2110 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2111 // Need to make sure we re-evaluate the window attributes next 2112 // time around, to ensure the window has the correct format. 2113 mWindowAttributesChanged = true; 2114 mWindowAttributesChangesFlag = 0; 2115 requestLayout(); 2116 } 2117 } 2118 2119 /** 2120 * Figures out the measure spec for the root view in a window based on it's 2121 * layout params. 2122 * 2123 * @param windowSize 2124 * The available width or height of the window 2125 * 2126 * @param rootDimension 2127 * The layout params for one dimension (width or height) of the 2128 * window. 2129 * 2130 * @return The measure spec to use to measure the root view. 2131 */ 2132 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2133 int measureSpec; 2134 switch (rootDimension) { 2135 2136 case ViewGroup.LayoutParams.MATCH_PARENT: 2137 // Window can't resize. Force root view to be windowSize. 2138 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2139 break; 2140 case ViewGroup.LayoutParams.WRAP_CONTENT: 2141 // Window can resize. Set max size for root view. 2142 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2143 break; 2144 default: 2145 // Window wants to be an exact size. Force root view to be that size. 2146 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2147 break; 2148 } 2149 return measureSpec; 2150 } 2151 2152 int mHardwareYOffset; 2153 int mResizeAlpha; 2154 final Paint mResizePaint = new Paint(); 2155 2156 @Override 2157 public void onHardwarePreDraw(HardwareCanvas canvas) { 2158 canvas.translate(0, -mHardwareYOffset); 2159 } 2160 2161 @Override 2162 public void onHardwarePostDraw(HardwareCanvas canvas) { 2163 if (mResizeBuffer != null) { 2164 mResizePaint.setAlpha(mResizeAlpha); 2165 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2166 } 2167 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2168 } 2169 2170 /** 2171 * @hide 2172 */ 2173 void outputDisplayList(View view) { 2174 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2175 DisplayList displayList = view.getDisplayList(); 2176 if (displayList != null) { 2177 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2178 } 2179 } 2180 } 2181 2182 /** 2183 * @see #PROPERTY_PROFILE_RENDERING 2184 */ 2185 private void profileRendering(boolean enabled) { 2186 if (mProfileRendering) { 2187 mRenderProfilingEnabled = enabled; 2188 2189 if (mRenderProfiler != null) { 2190 mChoreographer.removeFrameCallback(mRenderProfiler); 2191 } 2192 if (mRenderProfilingEnabled) { 2193 if (mRenderProfiler == null) { 2194 mRenderProfiler = new Choreographer.FrameCallback() { 2195 @Override 2196 public void doFrame(long frameTimeNanos) { 2197 mDirty.set(0, 0, mWidth, mHeight); 2198 scheduleTraversals(); 2199 if (mRenderProfilingEnabled) { 2200 mChoreographer.postFrameCallback(mRenderProfiler); 2201 } 2202 } 2203 }; 2204 } 2205 mChoreographer.postFrameCallback(mRenderProfiler); 2206 } else { 2207 mRenderProfiler = null; 2208 } 2209 } 2210 } 2211 2212 /** 2213 * Called from draw() when DEBUG_FPS is enabled 2214 */ 2215 private void trackFPS() { 2216 // Tracks frames per second drawn. First value in a series of draws may be bogus 2217 // because it down not account for the intervening idle time 2218 long nowTime = System.currentTimeMillis(); 2219 if (mFpsStartTime < 0) { 2220 mFpsStartTime = mFpsPrevTime = nowTime; 2221 mFpsNumFrames = 0; 2222 } else { 2223 ++mFpsNumFrames; 2224 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2225 long frameTime = nowTime - mFpsPrevTime; 2226 long totalTime = nowTime - mFpsStartTime; 2227 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2228 mFpsPrevTime = nowTime; 2229 if (totalTime > 1000) { 2230 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2231 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2232 mFpsStartTime = nowTime; 2233 mFpsNumFrames = 0; 2234 } 2235 } 2236 } 2237 2238 private void performDraw() { 2239 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2240 return; 2241 } 2242 2243 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2244 mFullRedrawNeeded = false; 2245 2246 mIsDrawing = true; 2247 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2248 try { 2249 draw(fullRedrawNeeded); 2250 } finally { 2251 mIsDrawing = false; 2252 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2253 } 2254 2255 if (mReportNextDraw) { 2256 mReportNextDraw = false; 2257 2258 if (LOCAL_LOGV) { 2259 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2260 } 2261 if (mSurfaceHolder != null && mSurface.isValid()) { 2262 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2263 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2264 if (callbacks != null) { 2265 for (SurfaceHolder.Callback c : callbacks) { 2266 if (c instanceof SurfaceHolder.Callback2) { 2267 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2268 mSurfaceHolder); 2269 } 2270 } 2271 } 2272 } 2273 try { 2274 mWindowSession.finishDrawing(mWindow); 2275 } catch (RemoteException e) { 2276 } 2277 } 2278 } 2279 2280 private void draw(boolean fullRedrawNeeded) { 2281 Surface surface = mSurface; 2282 if (!surface.isValid()) { 2283 return; 2284 } 2285 2286 if (DEBUG_FPS) { 2287 trackFPS(); 2288 } 2289 2290 if (!sFirstDrawComplete) { 2291 synchronized (sFirstDrawHandlers) { 2292 sFirstDrawComplete = true; 2293 final int count = sFirstDrawHandlers.size(); 2294 for (int i = 0; i< count; i++) { 2295 mHandler.post(sFirstDrawHandlers.get(i)); 2296 } 2297 } 2298 } 2299 2300 scrollToRectOrFocus(null, false); 2301 2302 final AttachInfo attachInfo = mAttachInfo; 2303 if (attachInfo.mViewScrollChanged) { 2304 attachInfo.mViewScrollChanged = false; 2305 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2306 } 2307 2308 int yoff; 2309 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2310 if (animating) { 2311 yoff = mScroller.getCurrY(); 2312 } else { 2313 yoff = mScrollY; 2314 } 2315 if (mCurScrollY != yoff) { 2316 mCurScrollY = yoff; 2317 fullRedrawNeeded = true; 2318 } 2319 2320 final float appScale = attachInfo.mApplicationScale; 2321 final boolean scalingRequired = attachInfo.mScalingRequired; 2322 2323 int resizeAlpha = 0; 2324 if (mResizeBuffer != null) { 2325 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2326 if (deltaTime < mResizeBufferDuration) { 2327 float amt = deltaTime/(float) mResizeBufferDuration; 2328 amt = mResizeInterpolator.getInterpolation(amt); 2329 animating = true; 2330 resizeAlpha = 255 - (int)(amt*255); 2331 } else { 2332 disposeResizeBuffer(); 2333 } 2334 } 2335 2336 final Rect dirty = mDirty; 2337 if (mSurfaceHolder != null) { 2338 // The app owns the surface, we won't draw. 2339 dirty.setEmpty(); 2340 if (animating) { 2341 if (mScroller != null) { 2342 mScroller.abortAnimation(); 2343 } 2344 disposeResizeBuffer(); 2345 } 2346 return; 2347 } 2348 2349 if (fullRedrawNeeded) { 2350 attachInfo.mIgnoreDirtyState = true; 2351 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2352 } 2353 2354 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2355 Log.v(TAG, "Draw " + mView + "/" 2356 + mWindowAttributes.getTitle() 2357 + ": dirty={" + dirty.left + "," + dirty.top 2358 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2359 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2360 appScale + ", width=" + mWidth + ", height=" + mHeight); 2361 } 2362 2363 invalidateDisplayLists(); 2364 2365 attachInfo.mTreeObserver.dispatchOnDraw(); 2366 2367 if (!dirty.isEmpty() || mIsAnimating) { 2368 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2369 // Draw with hardware renderer. 2370 mIsAnimating = false; 2371 mHardwareYOffset = yoff; 2372 mResizeAlpha = resizeAlpha; 2373 2374 mCurrentDirty.set(dirty); 2375 dirty.setEmpty(); 2376 2377 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2378 animating ? null : mCurrentDirty); 2379 } else { 2380 // If we get here with a disabled & requested hardware renderer, something went 2381 // wrong (an invalidate posted right before we destroyed the hardware surface 2382 // for instance) so we should just bail out. Locking the surface with software 2383 // rendering at this point would lock it forever and prevent hardware renderer 2384 // from doing its job when it comes back. 2385 // Before we request a new frame we must however attempt to reinitiliaze the 2386 // hardware renderer if it's in requested state. This would happen after an 2387 // eglTerminate() for instance. 2388 if (attachInfo.mHardwareRenderer != null && 2389 !attachInfo.mHardwareRenderer.isEnabled() && 2390 attachInfo.mHardwareRenderer.isRequested()) { 2391 2392 try { 2393 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2394 mHolder.getSurface()); 2395 } catch (OutOfResourcesException e) { 2396 handleOutOfResourcesException(e); 2397 return; 2398 } 2399 2400 mFullRedrawNeeded = true; 2401 scheduleTraversals(); 2402 return; 2403 } 2404 2405 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2406 return; 2407 } 2408 } 2409 } 2410 2411 if (animating) { 2412 mFullRedrawNeeded = true; 2413 scheduleTraversals(); 2414 } 2415 } 2416 2417 /** 2418 * @return true if drawing was succesfull, false if an error occurred 2419 */ 2420 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2421 boolean scalingRequired, Rect dirty) { 2422 2423 // Draw with software renderer. 2424 Canvas canvas; 2425 try { 2426 int left = dirty.left; 2427 int top = dirty.top; 2428 int right = dirty.right; 2429 int bottom = dirty.bottom; 2430 2431 canvas = mSurface.lockCanvas(dirty); 2432 2433 // The dirty rectangle can be modified by Surface.lockCanvas() 2434 //noinspection ConstantConditions 2435 if (left != dirty.left || top != dirty.top || right != dirty.right || 2436 bottom != dirty.bottom) { 2437 attachInfo.mIgnoreDirtyState = true; 2438 } 2439 2440 // TODO: Do this in native 2441 canvas.setDensity(mDensity); 2442 } catch (Surface.OutOfResourcesException e) { 2443 handleOutOfResourcesException(e); 2444 return false; 2445 } catch (IllegalArgumentException e) { 2446 Log.e(TAG, "Could not lock surface", e); 2447 // Don't assume this is due to out of memory, it could be 2448 // something else, and if it is something else then we could 2449 // kill stuff (or ourself) for no reason. 2450 mLayoutRequested = true; // ask wm for a new surface next time. 2451 return false; 2452 } 2453 2454 try { 2455 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2456 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2457 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2458 //canvas.drawARGB(255, 255, 0, 0); 2459 } 2460 2461 // If this bitmap's format includes an alpha channel, we 2462 // need to clear it before drawing so that the child will 2463 // properly re-composite its drawing on a transparent 2464 // background. This automatically respects the clip/dirty region 2465 // or 2466 // If we are applying an offset, we need to clear the area 2467 // where the offset doesn't appear to avoid having garbage 2468 // left in the blank areas. 2469 if (!canvas.isOpaque() || yoff != 0) { 2470 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2471 } 2472 2473 dirty.setEmpty(); 2474 mIsAnimating = false; 2475 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2476 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2477 2478 if (DEBUG_DRAW) { 2479 Context cxt = mView.getContext(); 2480 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2481 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2482 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2483 } 2484 try { 2485 canvas.translate(0, -yoff); 2486 if (mTranslator != null) { 2487 mTranslator.translateCanvas(canvas); 2488 } 2489 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2490 attachInfo.mSetIgnoreDirtyState = false; 2491 2492 mView.draw(canvas); 2493 2494 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2495 } finally { 2496 if (!attachInfo.mSetIgnoreDirtyState) { 2497 // Only clear the flag if it was not set during the mView.draw() call 2498 attachInfo.mIgnoreDirtyState = false; 2499 } 2500 } 2501 } finally { 2502 try { 2503 surface.unlockCanvasAndPost(canvas); 2504 } catch (IllegalArgumentException e) { 2505 Log.e(TAG, "Could not unlock surface", e); 2506 mLayoutRequested = true; // ask wm for a new surface next time. 2507 //noinspection ReturnInsideFinallyBlock 2508 return false; 2509 } 2510 2511 if (LOCAL_LOGV) { 2512 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2513 } 2514 } 2515 return true; 2516 } 2517 2518 /** 2519 * We want to draw a highlight around the current accessibility focused. 2520 * Since adding a style for all possible view is not a viable option we 2521 * have this specialized drawing method. 2522 * 2523 * Note: We are doing this here to be able to draw the highlight for 2524 * virtual views in addition to real ones. 2525 * 2526 * @param canvas The canvas on which to draw. 2527 */ 2528 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2529 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2530 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2531 return; 2532 } 2533 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2534 return; 2535 } 2536 Drawable drawable = getAccessibilityFocusedDrawable(); 2537 if (drawable == null) { 2538 return; 2539 } 2540 AccessibilityNodeProvider provider = 2541 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2542 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2543 if (provider == null) { 2544 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2545 } else { 2546 if (mAccessibilityFocusedVirtualView == null) { 2547 return; 2548 } 2549 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2550 } 2551 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2552 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2553 drawable.setBounds(bounds); 2554 drawable.draw(canvas); 2555 } 2556 2557 private Drawable getAccessibilityFocusedDrawable() { 2558 if (mAttachInfo != null) { 2559 // Lazily load the accessibility focus drawable. 2560 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2561 TypedValue value = new TypedValue(); 2562 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2563 R.attr.accessibilityFocusedDrawable, value, true); 2564 if (resolved) { 2565 mAttachInfo.mAccessibilityFocusDrawable = 2566 mView.mContext.getResources().getDrawable(value.resourceId); 2567 } 2568 } 2569 return mAttachInfo.mAccessibilityFocusDrawable; 2570 } 2571 return null; 2572 } 2573 2574 void invalidateDisplayLists() { 2575 final ArrayList<DisplayList> displayLists = mDisplayLists; 2576 final int count = displayLists.size(); 2577 2578 for (int i = 0; i < count; i++) { 2579 final DisplayList displayList = displayLists.get(i); 2580 if (displayList.isDirty()) { 2581 displayList.reset(); 2582 } 2583 } 2584 2585 displayLists.clear(); 2586 } 2587 2588 /** 2589 * @hide 2590 */ 2591 public void setDrawDuringWindowsAnimating(boolean value) { 2592 mDrawDuringWindowsAnimating = value; 2593 if (value) { 2594 handleDispatchDoneAnimating(); 2595 } 2596 } 2597 2598 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2599 final View.AttachInfo attachInfo = mAttachInfo; 2600 final Rect ci = attachInfo.mContentInsets; 2601 final Rect vi = attachInfo.mVisibleInsets; 2602 int scrollY = 0; 2603 boolean handled = false; 2604 2605 if (vi.left > ci.left || vi.top > ci.top 2606 || vi.right > ci.right || vi.bottom > ci.bottom) { 2607 // We'll assume that we aren't going to change the scroll 2608 // offset, since we want to avoid that unless it is actually 2609 // going to make the focus visible... otherwise we scroll 2610 // all over the place. 2611 scrollY = mScrollY; 2612 // We can be called for two different situations: during a draw, 2613 // to update the scroll position if the focus has changed (in which 2614 // case 'rectangle' is null), or in response to a 2615 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2616 // is non-null and we just want to scroll to whatever that 2617 // rectangle is). 2618 final View focus = mView.findFocus(); 2619 if (focus == null) { 2620 return false; 2621 } 2622 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2623 if (focus != lastScrolledFocus) { 2624 // If the focus has changed, then ignore any requests to scroll 2625 // to a rectangle; first we want to make sure the entire focus 2626 // view is visible. 2627 rectangle = null; 2628 } 2629 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2630 + " rectangle=" + rectangle + " ci=" + ci 2631 + " vi=" + vi); 2632 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2633 // Optimization: if the focus hasn't changed since last 2634 // time, and no layout has happened, then just leave things 2635 // as they are. 2636 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2637 + mScrollY + " vi=" + vi.toShortString()); 2638 } else { 2639 // We need to determine if the currently focused view is 2640 // within the visible part of the window and, if not, apply 2641 // a pan so it can be seen. 2642 mLastScrolledFocus = new WeakReference<View>(focus); 2643 mScrollMayChange = false; 2644 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2645 // Try to find the rectangle from the focus view. 2646 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2647 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2648 + mView.getWidth() + " h=" + mView.getHeight() 2649 + " ci=" + ci.toShortString() 2650 + " vi=" + vi.toShortString()); 2651 if (rectangle == null) { 2652 focus.getFocusedRect(mTempRect); 2653 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2654 + ": focusRect=" + mTempRect.toShortString()); 2655 if (mView instanceof ViewGroup) { 2656 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2657 focus, mTempRect); 2658 } 2659 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2660 "Focus in window: focusRect=" 2661 + mTempRect.toShortString() 2662 + " visRect=" + mVisRect.toShortString()); 2663 } else { 2664 mTempRect.set(rectangle); 2665 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2666 "Request scroll to rect: " 2667 + mTempRect.toShortString() 2668 + " visRect=" + mVisRect.toShortString()); 2669 } 2670 if (mTempRect.intersect(mVisRect)) { 2671 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2672 "Focus window visible rect: " 2673 + mTempRect.toShortString()); 2674 if (mTempRect.height() > 2675 (mView.getHeight()-vi.top-vi.bottom)) { 2676 // If the focus simply is not going to fit, then 2677 // best is probably just to leave things as-is. 2678 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2679 "Too tall; leaving scrollY=" + scrollY); 2680 } else if ((mTempRect.top-scrollY) < vi.top) { 2681 scrollY -= vi.top - (mTempRect.top-scrollY); 2682 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2683 "Top covered; scrollY=" + scrollY); 2684 } else if ((mTempRect.bottom-scrollY) 2685 > (mView.getHeight()-vi.bottom)) { 2686 scrollY += (mTempRect.bottom-scrollY) 2687 - (mView.getHeight()-vi.bottom); 2688 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2689 "Bottom covered; scrollY=" + scrollY); 2690 } 2691 handled = true; 2692 } 2693 } 2694 } 2695 } 2696 2697 if (scrollY != mScrollY) { 2698 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2699 + mScrollY + " , new=" + scrollY); 2700 if (!immediate && mResizeBuffer == null) { 2701 if (mScroller == null) { 2702 mScroller = new Scroller(mView.getContext()); 2703 } 2704 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2705 } else if (mScroller != null) { 2706 mScroller.abortAnimation(); 2707 } 2708 mScrollY = scrollY; 2709 } 2710 2711 return handled; 2712 } 2713 2714 /** 2715 * @hide 2716 */ 2717 public View getAccessibilityFocusedHost() { 2718 return mAccessibilityFocusedHost; 2719 } 2720 2721 /** 2722 * @hide 2723 */ 2724 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2725 return mAccessibilityFocusedVirtualView; 2726 } 2727 2728 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2729 // If we have a virtual view with accessibility focus we need 2730 // to clear the focus and invalidate the virtual view bounds. 2731 if (mAccessibilityFocusedVirtualView != null) { 2732 2733 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2734 View focusHost = mAccessibilityFocusedHost; 2735 2736 // Wipe the state of the current accessibility focus since 2737 // the call into the provider to clear accessibility focus 2738 // will fire an accessibility event which will end up calling 2739 // this method and we want to have clean state when this 2740 // invocation happens. 2741 mAccessibilityFocusedHost = null; 2742 mAccessibilityFocusedVirtualView = null; 2743 2744 // Clear accessibility focus on the host after clearing state since 2745 // this method may be reentrant. 2746 focusHost.clearAccessibilityFocusNoCallbacks(); 2747 2748 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2749 if (provider != null) { 2750 // Invalidate the area of the cleared accessibility focus. 2751 focusNode.getBoundsInParent(mTempRect); 2752 focusHost.invalidate(mTempRect); 2753 // Clear accessibility focus in the virtual node. 2754 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2755 focusNode.getSourceNodeId()); 2756 provider.performAction(virtualNodeId, 2757 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2758 } 2759 focusNode.recycle(); 2760 } 2761 if (mAccessibilityFocusedHost != null) { 2762 // Clear accessibility focus in the view. 2763 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2764 } 2765 2766 // Set the new focus host and node. 2767 mAccessibilityFocusedHost = view; 2768 mAccessibilityFocusedVirtualView = node; 2769 } 2770 2771 @Override 2772 public void requestChildFocus(View child, View focused) { 2773 if (DEBUG_INPUT_RESIZE) { 2774 Log.v(TAG, "Request child focus: focus now " + focused); 2775 } 2776 checkThread(); 2777 scheduleTraversals(); 2778 } 2779 2780 @Override 2781 public void clearChildFocus(View child) { 2782 if (DEBUG_INPUT_RESIZE) { 2783 Log.v(TAG, "Clearing child focus"); 2784 } 2785 checkThread(); 2786 scheduleTraversals(); 2787 } 2788 2789 @Override 2790 public ViewParent getParentForAccessibility() { 2791 return null; 2792 } 2793 2794 @Override 2795 public void focusableViewAvailable(View v) { 2796 checkThread(); 2797 if (mView != null) { 2798 if (!mView.hasFocus()) { 2799 v.requestFocus(); 2800 } else { 2801 // the one case where will transfer focus away from the current one 2802 // is if the current view is a view group that prefers to give focus 2803 // to its children first AND the view is a descendant of it. 2804 View focused = mView.findFocus(); 2805 if (focused instanceof ViewGroup) { 2806 ViewGroup group = (ViewGroup) focused; 2807 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2808 && isViewDescendantOf(v, focused)) { 2809 v.requestFocus(); 2810 } 2811 } 2812 } 2813 } 2814 } 2815 2816 @Override 2817 public void recomputeViewAttributes(View child) { 2818 checkThread(); 2819 if (mView == child) { 2820 mAttachInfo.mRecomputeGlobalAttributes = true; 2821 if (!mWillDrawSoon) { 2822 scheduleTraversals(); 2823 } 2824 } 2825 } 2826 2827 void dispatchDetachedFromWindow() { 2828 if (mView != null && mView.mAttachInfo != null) { 2829 if (mAttachInfo.mHardwareRenderer != null && 2830 mAttachInfo.mHardwareRenderer.isEnabled()) { 2831 mAttachInfo.mHardwareRenderer.validate(); 2832 } 2833 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2834 mView.dispatchDetachedFromWindow(); 2835 } 2836 2837 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2838 mAccessibilityManager.removeAccessibilityStateChangeListener( 2839 mAccessibilityInteractionConnectionManager); 2840 removeSendWindowContentChangedCallback(); 2841 2842 destroyHardwareRenderer(); 2843 2844 setAccessibilityFocus(null, null); 2845 2846 mView.assignParent(null); 2847 mView = null; 2848 mAttachInfo.mRootView = null; 2849 mAttachInfo.mSurface = null; 2850 2851 mSurface.release(); 2852 2853 if (mInputQueueCallback != null && mInputQueue != null) { 2854 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2855 mInputQueue.dispose(); 2856 mInputQueueCallback = null; 2857 mInputQueue = null; 2858 } 2859 if (mInputEventReceiver != null) { 2860 mInputEventReceiver.dispose(); 2861 mInputEventReceiver = null; 2862 } 2863 try { 2864 mWindowSession.remove(mWindow); 2865 } catch (RemoteException e) { 2866 } 2867 2868 // Dispose the input channel after removing the window so the Window Manager 2869 // doesn't interpret the input channel being closed as an abnormal termination. 2870 if (mInputChannel != null) { 2871 mInputChannel.dispose(); 2872 mInputChannel = null; 2873 } 2874 2875 unscheduleTraversals(); 2876 } 2877 2878 void updateConfiguration(Configuration config, boolean force) { 2879 if (DEBUG_CONFIGURATION) Log.v(TAG, 2880 "Applying new config to window " 2881 + mWindowAttributes.getTitle() 2882 + ": " + config); 2883 2884 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2885 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2886 config = new Configuration(config); 2887 ci.applyToConfiguration(mNoncompatDensity, config); 2888 } 2889 2890 synchronized (sConfigCallbacks) { 2891 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2892 sConfigCallbacks.get(i).onConfigurationChanged(config); 2893 } 2894 } 2895 if (mView != null) { 2896 // At this point the resources have been updated to 2897 // have the most recent config, whatever that is. Use 2898 // the one in them which may be newer. 2899 config = mView.getResources().getConfiguration(); 2900 if (force || mLastConfiguration.diff(config) != 0) { 2901 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2902 final int currentLayoutDirection = config.getLayoutDirection(); 2903 mLastConfiguration.setTo(config); 2904 if (lastLayoutDirection != currentLayoutDirection && 2905 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2906 mView.setLayoutDirection(currentLayoutDirection); 2907 } 2908 mView.dispatchConfigurationChanged(config); 2909 } 2910 } 2911 } 2912 2913 /** 2914 * Return true if child is an ancestor of parent, (or equal to the parent). 2915 */ 2916 public static boolean isViewDescendantOf(View child, View parent) { 2917 if (child == parent) { 2918 return true; 2919 } 2920 2921 final ViewParent theParent = child.getParent(); 2922 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2923 } 2924 2925 private static void forceLayout(View view) { 2926 view.forceLayout(); 2927 if (view instanceof ViewGroup) { 2928 ViewGroup group = (ViewGroup) view; 2929 final int count = group.getChildCount(); 2930 for (int i = 0; i < count; i++) { 2931 forceLayout(group.getChildAt(i)); 2932 } 2933 } 2934 } 2935 2936 private final static int MSG_INVALIDATE = 1; 2937 private final static int MSG_INVALIDATE_RECT = 2; 2938 private final static int MSG_DIE = 3; 2939 private final static int MSG_RESIZED = 4; 2940 private final static int MSG_RESIZED_REPORT = 5; 2941 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2942 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 2943 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2944 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2945 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2946 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2947 private final static int MSG_CHECK_FOCUS = 13; 2948 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2949 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2950 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2951 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2952 private final static int MSG_UPDATE_CONFIGURATION = 18; 2953 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2954 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2955 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2956 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2957 private final static int MSG_INVALIDATE_WORLD = 23; 2958 private final static int MSG_WINDOW_MOVED = 24; 2959 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2960 2961 final class ViewRootHandler extends Handler { 2962 @Override 2963 public String getMessageName(Message message) { 2964 switch (message.what) { 2965 case MSG_INVALIDATE: 2966 return "MSG_INVALIDATE"; 2967 case MSG_INVALIDATE_RECT: 2968 return "MSG_INVALIDATE_RECT"; 2969 case MSG_DIE: 2970 return "MSG_DIE"; 2971 case MSG_RESIZED: 2972 return "MSG_RESIZED"; 2973 case MSG_RESIZED_REPORT: 2974 return "MSG_RESIZED_REPORT"; 2975 case MSG_WINDOW_FOCUS_CHANGED: 2976 return "MSG_WINDOW_FOCUS_CHANGED"; 2977 case MSG_DISPATCH_INPUT_EVENT: 2978 return "MSG_DISPATCH_INPUT_EVENT"; 2979 case MSG_DISPATCH_APP_VISIBILITY: 2980 return "MSG_DISPATCH_APP_VISIBILITY"; 2981 case MSG_DISPATCH_GET_NEW_SURFACE: 2982 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2983 case MSG_DISPATCH_KEY_FROM_IME: 2984 return "MSG_DISPATCH_KEY_FROM_IME"; 2985 case MSG_FINISH_INPUT_CONNECTION: 2986 return "MSG_FINISH_INPUT_CONNECTION"; 2987 case MSG_CHECK_FOCUS: 2988 return "MSG_CHECK_FOCUS"; 2989 case MSG_CLOSE_SYSTEM_DIALOGS: 2990 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2991 case MSG_DISPATCH_DRAG_EVENT: 2992 return "MSG_DISPATCH_DRAG_EVENT"; 2993 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2994 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2995 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2996 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2997 case MSG_UPDATE_CONFIGURATION: 2998 return "MSG_UPDATE_CONFIGURATION"; 2999 case MSG_PROCESS_INPUT_EVENTS: 3000 return "MSG_PROCESS_INPUT_EVENTS"; 3001 case MSG_DISPATCH_SCREEN_STATE: 3002 return "MSG_DISPATCH_SCREEN_STATE"; 3003 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3004 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3005 case MSG_DISPATCH_DONE_ANIMATING: 3006 return "MSG_DISPATCH_DONE_ANIMATING"; 3007 case MSG_WINDOW_MOVED: 3008 return "MSG_WINDOW_MOVED"; 3009 case MSG_FLUSH_LAYER_UPDATES: 3010 return "MSG_FLUSH_LAYER_UPDATES"; 3011 } 3012 return super.getMessageName(message); 3013 } 3014 3015 @Override 3016 public void handleMessage(Message msg) { 3017 switch (msg.what) { 3018 case MSG_INVALIDATE: 3019 ((View) msg.obj).invalidate(); 3020 break; 3021 case MSG_INVALIDATE_RECT: 3022 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3023 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3024 info.recycle(); 3025 break; 3026 case MSG_PROCESS_INPUT_EVENTS: 3027 mProcessInputEventsScheduled = false; 3028 doProcessInputEvents(); 3029 break; 3030 case MSG_DISPATCH_APP_VISIBILITY: 3031 handleAppVisibility(msg.arg1 != 0); 3032 break; 3033 case MSG_DISPATCH_GET_NEW_SURFACE: 3034 handleGetNewSurface(); 3035 break; 3036 case MSG_RESIZED: { 3037 // Recycled in the fall through... 3038 SomeArgs args = (SomeArgs) msg.obj; 3039 if (mWinFrame.equals(args.arg1) 3040 && mPendingOverscanInsets.equals(args.arg5) 3041 && mPendingContentInsets.equals(args.arg2) 3042 && mPendingVisibleInsets.equals(args.arg3) 3043 && args.arg4 == null) { 3044 break; 3045 } 3046 } // fall through... 3047 case MSG_RESIZED_REPORT: 3048 if (mAdded) { 3049 SomeArgs args = (SomeArgs) msg.obj; 3050 3051 Configuration config = (Configuration) args.arg4; 3052 if (config != null) { 3053 updateConfiguration(config, false); 3054 } 3055 3056 mWinFrame.set((Rect) args.arg1); 3057 mPendingOverscanInsets.set((Rect) args.arg5); 3058 mPendingContentInsets.set((Rect) args.arg2); 3059 mPendingVisibleInsets.set((Rect) args.arg3); 3060 3061 args.recycle(); 3062 3063 if (msg.what == MSG_RESIZED_REPORT) { 3064 mReportNextDraw = true; 3065 } 3066 3067 if (mView != null) { 3068 forceLayout(mView); 3069 } 3070 3071 requestLayout(); 3072 } 3073 break; 3074 case MSG_WINDOW_MOVED: 3075 if (mAdded) { 3076 final int w = mWinFrame.width(); 3077 final int h = mWinFrame.height(); 3078 final int l = msg.arg1; 3079 final int t = msg.arg2; 3080 mWinFrame.left = l; 3081 mWinFrame.right = l + w; 3082 mWinFrame.top = t; 3083 mWinFrame.bottom = t + h; 3084 3085 if (mView != null) { 3086 forceLayout(mView); 3087 } 3088 requestLayout(); 3089 } 3090 break; 3091 case MSG_WINDOW_FOCUS_CHANGED: { 3092 if (mAdded) { 3093 boolean hasWindowFocus = msg.arg1 != 0; 3094 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3095 3096 profileRendering(hasWindowFocus); 3097 3098 if (hasWindowFocus) { 3099 boolean inTouchMode = msg.arg2 != 0; 3100 ensureTouchModeLocally(inTouchMode); 3101 3102 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3103 mFullRedrawNeeded = true; 3104 try { 3105 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3106 mWidth, mHeight, mHolder.getSurface()); 3107 } catch (OutOfResourcesException e) { 3108 Log.e(TAG, "OutOfResourcesException locking surface", e); 3109 try { 3110 if (!mWindowSession.outOfMemory(mWindow)) { 3111 Slog.w(TAG, "No processes killed for memory; killing self"); 3112 Process.killProcess(Process.myPid()); 3113 } 3114 } catch (RemoteException ex) { 3115 } 3116 // Retry in a bit. 3117 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3118 return; 3119 } 3120 } 3121 } 3122 3123 mLastWasImTarget = WindowManager.LayoutParams 3124 .mayUseInputMethod(mWindowAttributes.flags); 3125 3126 InputMethodManager imm = InputMethodManager.peekInstance(); 3127 if (mView != null) { 3128 if (hasWindowFocus && imm != null && mLastWasImTarget && 3129 !isInLocalFocusMode()) { 3130 imm.startGettingWindowFocus(mView); 3131 } 3132 mAttachInfo.mKeyDispatchState.reset(); 3133 mView.dispatchWindowFocusChanged(hasWindowFocus); 3134 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3135 } 3136 3137 // Note: must be done after the focus change callbacks, 3138 // so all of the view state is set up correctly. 3139 if (hasWindowFocus) { 3140 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3141 imm.onWindowFocus(mView, mView.findFocus(), 3142 mWindowAttributes.softInputMode, 3143 !mHasHadWindowFocus, mWindowAttributes.flags); 3144 } 3145 // Clear the forward bit. We can just do this directly, since 3146 // the window manager doesn't care about it. 3147 mWindowAttributes.softInputMode &= 3148 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3149 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3150 .softInputMode &= 3151 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3152 mHasHadWindowFocus = true; 3153 } 3154 3155 setAccessibilityFocus(null, null); 3156 3157 if (mView != null && mAccessibilityManager.isEnabled()) { 3158 if (hasWindowFocus) { 3159 mView.sendAccessibilityEvent( 3160 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3161 } 3162 } 3163 } 3164 } break; 3165 case MSG_DIE: 3166 doDie(); 3167 break; 3168 case MSG_DISPATCH_INPUT_EVENT: { 3169 InputEvent event = (InputEvent)msg.obj; 3170 enqueueInputEvent(event, null, 0, true); 3171 } break; 3172 case MSG_DISPATCH_KEY_FROM_IME: { 3173 if (LOCAL_LOGV) Log.v( 3174 TAG, "Dispatching key " 3175 + msg.obj + " from IME to " + mView); 3176 KeyEvent event = (KeyEvent)msg.obj; 3177 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3178 // The IME is trying to say this event is from the 3179 // system! Bad bad bad! 3180 //noinspection UnusedAssignment 3181 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3182 } 3183 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3184 } break; 3185 case MSG_FINISH_INPUT_CONNECTION: { 3186 InputMethodManager imm = InputMethodManager.peekInstance(); 3187 if (imm != null) { 3188 imm.reportFinishInputConnection((InputConnection)msg.obj); 3189 } 3190 } break; 3191 case MSG_CHECK_FOCUS: { 3192 InputMethodManager imm = InputMethodManager.peekInstance(); 3193 if (imm != null) { 3194 imm.checkFocus(); 3195 } 3196 } break; 3197 case MSG_CLOSE_SYSTEM_DIALOGS: { 3198 if (mView != null) { 3199 mView.onCloseSystemDialogs((String)msg.obj); 3200 } 3201 } break; 3202 case MSG_DISPATCH_DRAG_EVENT: 3203 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3204 DragEvent event = (DragEvent)msg.obj; 3205 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3206 handleDragEvent(event); 3207 } break; 3208 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3209 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3210 } break; 3211 case MSG_UPDATE_CONFIGURATION: { 3212 Configuration config = (Configuration)msg.obj; 3213 if (config.isOtherSeqNewer(mLastConfiguration)) { 3214 config = mLastConfiguration; 3215 } 3216 updateConfiguration(config, false); 3217 } break; 3218 case MSG_DISPATCH_SCREEN_STATE: { 3219 if (mView != null) { 3220 handleScreenStateChange(msg.arg1 == 1); 3221 } 3222 } break; 3223 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3224 setAccessibilityFocus(null, null); 3225 } break; 3226 case MSG_DISPATCH_DONE_ANIMATING: { 3227 handleDispatchDoneAnimating(); 3228 } break; 3229 case MSG_INVALIDATE_WORLD: { 3230 if (mView != null) { 3231 invalidateWorld(mView); 3232 } 3233 } break; 3234 case MSG_FLUSH_LAYER_UPDATES: { 3235 flushHardwareLayerUpdates(); 3236 } break; 3237 } 3238 } 3239 } 3240 3241 final ViewRootHandler mHandler = new ViewRootHandler(); 3242 3243 /** 3244 * Something in the current window tells us we need to change the touch mode. For 3245 * example, we are not in touch mode, and the user touches the screen. 3246 * 3247 * If the touch mode has changed, tell the window manager, and handle it locally. 3248 * 3249 * @param inTouchMode Whether we want to be in touch mode. 3250 * @return True if the touch mode changed and focus changed was changed as a result 3251 */ 3252 boolean ensureTouchMode(boolean inTouchMode) { 3253 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3254 + "touch mode is " + mAttachInfo.mInTouchMode); 3255 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3256 3257 // tell the window manager 3258 try { 3259 if (!isInLocalFocusMode()) { 3260 mWindowSession.setInTouchMode(inTouchMode); 3261 } 3262 } catch (RemoteException e) { 3263 throw new RuntimeException(e); 3264 } 3265 3266 // handle the change 3267 return ensureTouchModeLocally(inTouchMode); 3268 } 3269 3270 /** 3271 * Ensure that the touch mode for this window is set, and if it is changing, 3272 * take the appropriate action. 3273 * @param inTouchMode Whether we want to be in touch mode. 3274 * @return True if the touch mode changed and focus changed was changed as a result 3275 */ 3276 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3277 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3278 + "touch mode is " + mAttachInfo.mInTouchMode); 3279 3280 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3281 3282 mAttachInfo.mInTouchMode = inTouchMode; 3283 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3284 3285 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3286 } 3287 3288 private boolean enterTouchMode() { 3289 if (mView != null && mView.hasFocus()) { 3290 // note: not relying on mFocusedView here because this could 3291 // be when the window is first being added, and mFocused isn't 3292 // set yet. 3293 final View focused = mView.findFocus(); 3294 if (focused != null && !focused.isFocusableInTouchMode()) { 3295 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3296 if (ancestorToTakeFocus != null) { 3297 // there is an ancestor that wants focus after its 3298 // descendants that is focusable in touch mode.. give it 3299 // focus 3300 return ancestorToTakeFocus.requestFocus(); 3301 } else { 3302 // There's nothing to focus. Clear and propagate through the 3303 // hierarchy, but don't attempt to place new focus. 3304 focused.clearFocusInternal(true, false); 3305 return true; 3306 } 3307 } 3308 } 3309 return false; 3310 } 3311 3312 /** 3313 * Find an ancestor of focused that wants focus after its descendants and is 3314 * focusable in touch mode. 3315 * @param focused The currently focused view. 3316 * @return An appropriate view, or null if no such view exists. 3317 */ 3318 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3319 ViewParent parent = focused.getParent(); 3320 while (parent instanceof ViewGroup) { 3321 final ViewGroup vgParent = (ViewGroup) parent; 3322 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3323 && vgParent.isFocusableInTouchMode()) { 3324 return vgParent; 3325 } 3326 if (vgParent.isRootNamespace()) { 3327 return null; 3328 } else { 3329 parent = vgParent.getParent(); 3330 } 3331 } 3332 return null; 3333 } 3334 3335 private boolean leaveTouchMode() { 3336 if (mView != null) { 3337 if (mView.hasFocus()) { 3338 View focusedView = mView.findFocus(); 3339 if (!(focusedView instanceof ViewGroup)) { 3340 // some view has focus, let it keep it 3341 return false; 3342 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3343 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3344 // some view group has focus, and doesn't prefer its children 3345 // over itself for focus, so let them keep it. 3346 return false; 3347 } 3348 } 3349 3350 // find the best view to give focus to in this brave new non-touch-mode 3351 // world 3352 final View focused = focusSearch(null, View.FOCUS_DOWN); 3353 if (focused != null) { 3354 return focused.requestFocus(View.FOCUS_DOWN); 3355 } 3356 } 3357 return false; 3358 } 3359 3360 /** 3361 * Base class for implementing a stage in the chain of responsibility 3362 * for processing input events. 3363 * <p> 3364 * Events are delivered to the stage by the {@link #deliver} method. The stage 3365 * then has the choice of finishing the event or forwarding it to the next stage. 3366 * </p> 3367 */ 3368 abstract class InputStage { 3369 private final InputStage mNext; 3370 3371 protected static final int FORWARD = 0; 3372 protected static final int FINISH_HANDLED = 1; 3373 protected static final int FINISH_NOT_HANDLED = 2; 3374 3375 /** 3376 * Creates an input stage. 3377 * @param next The next stage to which events should be forwarded. 3378 */ 3379 public InputStage(InputStage next) { 3380 mNext = next; 3381 } 3382 3383 /** 3384 * Delivers an event to be processed. 3385 */ 3386 public final void deliver(QueuedInputEvent q) { 3387 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3388 forward(q); 3389 } else if (shouldDropInputEvent(q)) { 3390 finish(q, false); 3391 } else { 3392 apply(q, onProcess(q)); 3393 } 3394 } 3395 3396 /** 3397 * Marks the the input event as finished then forwards it to the next stage. 3398 */ 3399 protected void finish(QueuedInputEvent q, boolean handled) { 3400 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3401 if (handled) { 3402 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3403 } 3404 forward(q); 3405 } 3406 3407 /** 3408 * Forwards the event to the next stage. 3409 */ 3410 protected void forward(QueuedInputEvent q) { 3411 onDeliverToNext(q); 3412 } 3413 3414 /** 3415 * Applies a result code from {@link #onProcess} to the specified event. 3416 */ 3417 protected void apply(QueuedInputEvent q, int result) { 3418 if (result == FORWARD) { 3419 forward(q); 3420 } else if (result == FINISH_HANDLED) { 3421 finish(q, true); 3422 } else if (result == FINISH_NOT_HANDLED) { 3423 finish(q, false); 3424 } else { 3425 throw new IllegalArgumentException("Invalid result: " + result); 3426 } 3427 } 3428 3429 /** 3430 * Called when an event is ready to be processed. 3431 * @return A result code indicating how the event was handled. 3432 */ 3433 protected int onProcess(QueuedInputEvent q) { 3434 return FORWARD; 3435 } 3436 3437 /** 3438 * Called when an event is being delivered to the next stage. 3439 */ 3440 protected void onDeliverToNext(QueuedInputEvent q) { 3441 if (mNext != null) { 3442 mNext.deliver(q); 3443 } else { 3444 finishInputEvent(q); 3445 } 3446 } 3447 3448 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3449 if (mView == null || !mAdded) { 3450 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3451 return true; 3452 } else if (!mAttachInfo.mHasWindowFocus && 3453 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3454 !isTerminalInputEvent(q.mEvent)) { 3455 // If this is a focused event and the window doesn't currently have input focus, 3456 // then drop this event. This could be an event that came back from the previous 3457 // stage but the window has lost focus in the meantime. 3458 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3459 return true; 3460 } 3461 return false; 3462 } 3463 3464 void dump(String prefix, PrintWriter writer) { 3465 if (mNext != null) { 3466 mNext.dump(prefix, writer); 3467 } 3468 } 3469 } 3470 3471 /** 3472 * Base class for implementing an input pipeline stage that supports 3473 * asynchronous and out-of-order processing of input events. 3474 * <p> 3475 * In addition to what a normal input stage can do, an asynchronous 3476 * input stage may also defer an input event that has been delivered to it 3477 * and finish or forward it later. 3478 * </p> 3479 */ 3480 abstract class AsyncInputStage extends InputStage { 3481 private final String mTraceCounter; 3482 3483 private QueuedInputEvent mQueueHead; 3484 private QueuedInputEvent mQueueTail; 3485 private int mQueueLength; 3486 3487 protected static final int DEFER = 3; 3488 3489 /** 3490 * Creates an asynchronous input stage. 3491 * @param next The next stage to which events should be forwarded. 3492 * @param traceCounter The name of a counter to record the size of 3493 * the queue of pending events. 3494 */ 3495 public AsyncInputStage(InputStage next, String traceCounter) { 3496 super(next); 3497 mTraceCounter = traceCounter; 3498 } 3499 3500 /** 3501 * Marks the event as deferred, which is to say that it will be handled 3502 * asynchronously. The caller is responsible for calling {@link #forward} 3503 * or {@link #finish} later when it is done handling the event. 3504 */ 3505 protected void defer(QueuedInputEvent q) { 3506 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3507 enqueue(q); 3508 } 3509 3510 @Override 3511 protected void forward(QueuedInputEvent q) { 3512 // Clear the deferred flag. 3513 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3514 3515 // Fast path if the queue is empty. 3516 QueuedInputEvent curr = mQueueHead; 3517 if (curr == null) { 3518 super.forward(q); 3519 return; 3520 } 3521 3522 // Determine whether the event must be serialized behind any others 3523 // before it can be delivered to the next stage. This is done because 3524 // deferred events might be handled out of order by the stage. 3525 final int deviceId = q.mEvent.getDeviceId(); 3526 QueuedInputEvent prev = null; 3527 boolean blocked = false; 3528 while (curr != null && curr != q) { 3529 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3530 blocked = true; 3531 } 3532 prev = curr; 3533 curr = curr.mNext; 3534 } 3535 3536 // If the event is blocked, then leave it in the queue to be delivered later. 3537 // Note that the event might not yet be in the queue if it was not previously 3538 // deferred so we will enqueue it if needed. 3539 if (blocked) { 3540 if (curr == null) { 3541 enqueue(q); 3542 } 3543 return; 3544 } 3545 3546 // The event is not blocked. Deliver it immediately. 3547 if (curr != null) { 3548 curr = curr.mNext; 3549 dequeue(q, prev); 3550 } 3551 super.forward(q); 3552 3553 // Dequeuing this event may have unblocked successors. Deliver them. 3554 while (curr != null) { 3555 if (deviceId == curr.mEvent.getDeviceId()) { 3556 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3557 break; 3558 } 3559 QueuedInputEvent next = curr.mNext; 3560 dequeue(curr, prev); 3561 super.forward(curr); 3562 curr = next; 3563 } else { 3564 prev = curr; 3565 curr = curr.mNext; 3566 } 3567 } 3568 } 3569 3570 @Override 3571 protected void apply(QueuedInputEvent q, int result) { 3572 if (result == DEFER) { 3573 defer(q); 3574 } else { 3575 super.apply(q, result); 3576 } 3577 } 3578 3579 private void enqueue(QueuedInputEvent q) { 3580 if (mQueueTail == null) { 3581 mQueueHead = q; 3582 mQueueTail = q; 3583 } else { 3584 mQueueTail.mNext = q; 3585 mQueueTail = q; 3586 } 3587 3588 mQueueLength += 1; 3589 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3590 } 3591 3592 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3593 if (prev == null) { 3594 mQueueHead = q.mNext; 3595 } else { 3596 prev.mNext = q.mNext; 3597 } 3598 if (mQueueTail == q) { 3599 mQueueTail = prev; 3600 } 3601 q.mNext = null; 3602 3603 mQueueLength -= 1; 3604 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3605 } 3606 3607 @Override 3608 void dump(String prefix, PrintWriter writer) { 3609 writer.print(prefix); 3610 writer.print(getClass().getName()); 3611 writer.print(": mQueueLength="); 3612 writer.println(mQueueLength); 3613 3614 super.dump(prefix, writer); 3615 } 3616 } 3617 3618 /** 3619 * Delivers pre-ime input events to a native activity. 3620 * Does not support pointer events. 3621 */ 3622 final class NativePreImeInputStage extends AsyncInputStage 3623 implements InputQueue.FinishedInputEventCallback { 3624 public NativePreImeInputStage(InputStage next, String traceCounter) { 3625 super(next, traceCounter); 3626 } 3627 3628 @Override 3629 protected int onProcess(QueuedInputEvent q) { 3630 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3631 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3632 return DEFER; 3633 } 3634 return FORWARD; 3635 } 3636 3637 @Override 3638 public void onFinishedInputEvent(Object token, boolean handled) { 3639 QueuedInputEvent q = (QueuedInputEvent)token; 3640 if (handled) { 3641 finish(q, true); 3642 return; 3643 } 3644 forward(q); 3645 } 3646 } 3647 3648 /** 3649 * Delivers pre-ime input events to the view hierarchy. 3650 * Does not support pointer events. 3651 */ 3652 final class ViewPreImeInputStage extends InputStage { 3653 public ViewPreImeInputStage(InputStage next) { 3654 super(next); 3655 } 3656 3657 @Override 3658 protected int onProcess(QueuedInputEvent q) { 3659 if (q.mEvent instanceof KeyEvent) { 3660 return processKeyEvent(q); 3661 } 3662 return FORWARD; 3663 } 3664 3665 private int processKeyEvent(QueuedInputEvent q) { 3666 final KeyEvent event = (KeyEvent)q.mEvent; 3667 if (mView.dispatchKeyEventPreIme(event)) { 3668 return FINISH_HANDLED; 3669 } 3670 return FORWARD; 3671 } 3672 } 3673 3674 /** 3675 * Delivers input events to the ime. 3676 * Does not support pointer events. 3677 */ 3678 final class ImeInputStage extends AsyncInputStage 3679 implements InputMethodManager.FinishedInputEventCallback { 3680 public ImeInputStage(InputStage next, String traceCounter) { 3681 super(next, traceCounter); 3682 } 3683 3684 @Override 3685 protected int onProcess(QueuedInputEvent q) { 3686 if (mLastWasImTarget && !isInLocalFocusMode()) { 3687 InputMethodManager imm = InputMethodManager.peekInstance(); 3688 if (imm != null) { 3689 final InputEvent event = q.mEvent; 3690 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3691 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3692 if (result == InputMethodManager.DISPATCH_HANDLED) { 3693 return FINISH_HANDLED; 3694 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3695 return FINISH_NOT_HANDLED; 3696 } else { 3697 return DEFER; // callback will be invoked later 3698 } 3699 } 3700 } 3701 return FORWARD; 3702 } 3703 3704 @Override 3705 public void onFinishedInputEvent(Object token, boolean handled) { 3706 QueuedInputEvent q = (QueuedInputEvent)token; 3707 if (handled) { 3708 finish(q, true); 3709 return; 3710 } 3711 forward(q); 3712 } 3713 } 3714 3715 /** 3716 * Performs early processing of post-ime input events. 3717 */ 3718 final class EarlyPostImeInputStage extends InputStage { 3719 public EarlyPostImeInputStage(InputStage next) { 3720 super(next); 3721 } 3722 3723 @Override 3724 protected int onProcess(QueuedInputEvent q) { 3725 if (q.mEvent instanceof KeyEvent) { 3726 return processKeyEvent(q); 3727 } else { 3728 final int source = q.mEvent.getSource(); 3729 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3730 return processPointerEvent(q); 3731 } 3732 } 3733 return FORWARD; 3734 } 3735 3736 private int processKeyEvent(QueuedInputEvent q) { 3737 final KeyEvent event = (KeyEvent)q.mEvent; 3738 3739 // If the key's purpose is to exit touch mode then we consume it 3740 // and consider it handled. 3741 if (checkForLeavingTouchModeAndConsume(event)) { 3742 return FINISH_HANDLED; 3743 } 3744 3745 // Make sure the fallback event policy sees all keys that will be 3746 // delivered to the view hierarchy. 3747 mFallbackEventHandler.preDispatchKeyEvent(event); 3748 return FORWARD; 3749 } 3750 3751 private int processPointerEvent(QueuedInputEvent q) { 3752 final MotionEvent event = (MotionEvent)q.mEvent; 3753 3754 // Translate the pointer event for compatibility, if needed. 3755 if (mTranslator != null) { 3756 mTranslator.translateEventInScreenToAppWindow(event); 3757 } 3758 3759 // Enter touch mode on down or scroll. 3760 final int action = event.getAction(); 3761 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3762 ensureTouchMode(true); 3763 } 3764 3765 // Offset the scroll position. 3766 if (mCurScrollY != 0) { 3767 event.offsetLocation(0, mCurScrollY); 3768 } 3769 3770 // Remember the touch position for possible drag-initiation. 3771 if (event.isTouchEvent()) { 3772 mLastTouchPoint.x = event.getRawX(); 3773 mLastTouchPoint.y = event.getRawY(); 3774 } 3775 return FORWARD; 3776 } 3777 } 3778 3779 /** 3780 * Delivers post-ime input events to a native activity. 3781 */ 3782 final class NativePostImeInputStage extends AsyncInputStage 3783 implements InputQueue.FinishedInputEventCallback { 3784 public NativePostImeInputStage(InputStage next, String traceCounter) { 3785 super(next, traceCounter); 3786 } 3787 3788 @Override 3789 protected int onProcess(QueuedInputEvent q) { 3790 if (mInputQueue != null) { 3791 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3792 return DEFER; 3793 } 3794 return FORWARD; 3795 } 3796 3797 @Override 3798 public void onFinishedInputEvent(Object token, boolean handled) { 3799 QueuedInputEvent q = (QueuedInputEvent)token; 3800 if (handled) { 3801 finish(q, true); 3802 return; 3803 } 3804 forward(q); 3805 } 3806 } 3807 3808 /** 3809 * Delivers post-ime input events to the view hierarchy. 3810 */ 3811 final class ViewPostImeInputStage extends InputStage { 3812 public ViewPostImeInputStage(InputStage next) { 3813 super(next); 3814 } 3815 3816 @Override 3817 protected int onProcess(QueuedInputEvent q) { 3818 if (q.mEvent instanceof KeyEvent) { 3819 return processKeyEvent(q); 3820 } else { 3821 // If delivering a new non-key event, make sure the window is 3822 // now allowed to start updating. 3823 handleDispatchDoneAnimating(); 3824 final int source = q.mEvent.getSource(); 3825 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3826 return processPointerEvent(q); 3827 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3828 return processTrackballEvent(q); 3829 } else { 3830 return processGenericMotionEvent(q); 3831 } 3832 } 3833 } 3834 3835 private int processKeyEvent(QueuedInputEvent q) { 3836 final KeyEvent event = (KeyEvent)q.mEvent; 3837 3838 if (event.getAction() != KeyEvent.ACTION_UP) { 3839 // If delivering a new key event, make sure the window is 3840 // now allowed to start updating. 3841 handleDispatchDoneAnimating(); 3842 } 3843 3844 // Deliver the key to the view hierarchy. 3845 if (mView.dispatchKeyEvent(event)) { 3846 return FINISH_HANDLED; 3847 } 3848 3849 if (shouldDropInputEvent(q)) { 3850 return FINISH_NOT_HANDLED; 3851 } 3852 3853 // If the Control modifier is held, try to interpret the key as a shortcut. 3854 if (event.getAction() == KeyEvent.ACTION_DOWN 3855 && event.isCtrlPressed() 3856 && event.getRepeatCount() == 0 3857 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3858 if (mView.dispatchKeyShortcutEvent(event)) { 3859 return FINISH_HANDLED; 3860 } 3861 if (shouldDropInputEvent(q)) { 3862 return FINISH_NOT_HANDLED; 3863 } 3864 } 3865 3866 // Apply the fallback event policy. 3867 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3868 return FINISH_HANDLED; 3869 } 3870 if (shouldDropInputEvent(q)) { 3871 return FINISH_NOT_HANDLED; 3872 } 3873 3874 // Handle automatic focus changes. 3875 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3876 int direction = 0; 3877 switch (event.getKeyCode()) { 3878 case KeyEvent.KEYCODE_DPAD_LEFT: 3879 if (event.hasNoModifiers()) { 3880 direction = View.FOCUS_LEFT; 3881 } 3882 break; 3883 case KeyEvent.KEYCODE_DPAD_RIGHT: 3884 if (event.hasNoModifiers()) { 3885 direction = View.FOCUS_RIGHT; 3886 } 3887 break; 3888 case KeyEvent.KEYCODE_DPAD_UP: 3889 if (event.hasNoModifiers()) { 3890 direction = View.FOCUS_UP; 3891 } 3892 break; 3893 case KeyEvent.KEYCODE_DPAD_DOWN: 3894 if (event.hasNoModifiers()) { 3895 direction = View.FOCUS_DOWN; 3896 } 3897 break; 3898 case KeyEvent.KEYCODE_TAB: 3899 if (event.hasNoModifiers()) { 3900 direction = View.FOCUS_FORWARD; 3901 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3902 direction = View.FOCUS_BACKWARD; 3903 } 3904 break; 3905 } 3906 if (direction != 0) { 3907 View focused = mView.findFocus(); 3908 if (focused != null) { 3909 View v = focused.focusSearch(direction); 3910 if (v != null && v != focused) { 3911 // do the math the get the interesting rect 3912 // of previous focused into the coord system of 3913 // newly focused view 3914 focused.getFocusedRect(mTempRect); 3915 if (mView instanceof ViewGroup) { 3916 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3917 focused, mTempRect); 3918 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3919 v, mTempRect); 3920 } 3921 if (v.requestFocus(direction, mTempRect)) { 3922 playSoundEffect(SoundEffectConstants 3923 .getContantForFocusDirection(direction)); 3924 return FINISH_HANDLED; 3925 } 3926 } 3927 3928 // Give the focused view a last chance to handle the dpad key. 3929 if (mView.dispatchUnhandledMove(focused, direction)) { 3930 return FINISH_HANDLED; 3931 } 3932 } else { 3933 // find the best view to give focus to in this non-touch-mode with no-focus 3934 View v = focusSearch(null, direction); 3935 if (v != null && v.requestFocus(direction)) { 3936 return FINISH_HANDLED; 3937 } 3938 } 3939 } 3940 } 3941 return FORWARD; 3942 } 3943 3944 private int processPointerEvent(QueuedInputEvent q) { 3945 final MotionEvent event = (MotionEvent)q.mEvent; 3946 3947 if (mView.dispatchPointerEvent(event)) { 3948 return FINISH_HANDLED; 3949 } 3950 return FORWARD; 3951 } 3952 3953 private int processTrackballEvent(QueuedInputEvent q) { 3954 final MotionEvent event = (MotionEvent)q.mEvent; 3955 3956 if (mView.dispatchTrackballEvent(event)) { 3957 return FINISH_HANDLED; 3958 } 3959 return FORWARD; 3960 } 3961 3962 private int processGenericMotionEvent(QueuedInputEvent q) { 3963 final MotionEvent event = (MotionEvent)q.mEvent; 3964 3965 // Deliver the event to the view. 3966 if (mView.dispatchGenericMotionEvent(event)) { 3967 return FINISH_HANDLED; 3968 } 3969 return FORWARD; 3970 } 3971 } 3972 3973 /** 3974 * Performs synthesis of new input events from unhandled input events. 3975 */ 3976 final class SyntheticInputStage extends InputStage { 3977 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3978 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3979 private final SyntheticTouchNavigationHandler mTouchNavigation = 3980 new SyntheticTouchNavigationHandler(); 3981 3982 public SyntheticInputStage() { 3983 super(null); 3984 } 3985 3986 @Override 3987 protected int onProcess(QueuedInputEvent q) { 3988 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3989 if (q.mEvent instanceof MotionEvent) { 3990 final MotionEvent event = (MotionEvent)q.mEvent; 3991 final int source = event.getSource(); 3992 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3993 mTrackball.process(event); 3994 return FINISH_HANDLED; 3995 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3996 mJoystick.process(event); 3997 return FINISH_HANDLED; 3998 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3999 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4000 mTouchNavigation.process(event); 4001 return FINISH_HANDLED; 4002 } 4003 } 4004 return FORWARD; 4005 } 4006 4007 @Override 4008 protected void onDeliverToNext(QueuedInputEvent q) { 4009 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4010 // Cancel related synthetic events if any prior stage has handled the event. 4011 if (q.mEvent instanceof MotionEvent) { 4012 final MotionEvent event = (MotionEvent)q.mEvent; 4013 final int source = event.getSource(); 4014 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4015 mTrackball.cancel(event); 4016 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4017 mJoystick.cancel(event); 4018 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4019 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4020 mTouchNavigation.cancel(event); 4021 } 4022 } 4023 } 4024 super.onDeliverToNext(q); 4025 } 4026 } 4027 4028 /** 4029 * Creates dpad events from unhandled trackball movements. 4030 */ 4031 final class SyntheticTrackballHandler { 4032 private final TrackballAxis mX = new TrackballAxis(); 4033 private final TrackballAxis mY = new TrackballAxis(); 4034 private long mLastTime; 4035 4036 public void process(MotionEvent event) { 4037 // Translate the trackball event into DPAD keys and try to deliver those. 4038 long curTime = SystemClock.uptimeMillis(); 4039 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4040 // It has been too long since the last movement, 4041 // so restart at the beginning. 4042 mX.reset(0); 4043 mY.reset(0); 4044 mLastTime = curTime; 4045 } 4046 4047 final int action = event.getAction(); 4048 final int metaState = event.getMetaState(); 4049 switch (action) { 4050 case MotionEvent.ACTION_DOWN: 4051 mX.reset(2); 4052 mY.reset(2); 4053 enqueueInputEvent(new KeyEvent(curTime, curTime, 4054 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4055 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4056 InputDevice.SOURCE_KEYBOARD)); 4057 break; 4058 case MotionEvent.ACTION_UP: 4059 mX.reset(2); 4060 mY.reset(2); 4061 enqueueInputEvent(new KeyEvent(curTime, curTime, 4062 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4063 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4064 InputDevice.SOURCE_KEYBOARD)); 4065 break; 4066 } 4067 4068 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4069 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4070 + " move=" + event.getX() 4071 + " / Y=" + mY.position + " step=" 4072 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4073 + " move=" + event.getY()); 4074 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4075 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4076 4077 // Generate DPAD events based on the trackball movement. 4078 // We pick the axis that has moved the most as the direction of 4079 // the DPAD. When we generate DPAD events for one axis, then the 4080 // other axis is reset -- we don't want to perform DPAD jumps due 4081 // to slight movements in the trackball when making major movements 4082 // along the other axis. 4083 int keycode = 0; 4084 int movement = 0; 4085 float accel = 1; 4086 if (xOff > yOff) { 4087 movement = mX.generate(); 4088 if (movement != 0) { 4089 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4090 : KeyEvent.KEYCODE_DPAD_LEFT; 4091 accel = mX.acceleration; 4092 mY.reset(2); 4093 } 4094 } else if (yOff > 0) { 4095 movement = mY.generate(); 4096 if (movement != 0) { 4097 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4098 : KeyEvent.KEYCODE_DPAD_UP; 4099 accel = mY.acceleration; 4100 mX.reset(2); 4101 } 4102 } 4103 4104 if (keycode != 0) { 4105 if (movement < 0) movement = -movement; 4106 int accelMovement = (int)(movement * accel); 4107 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4108 + " accelMovement=" + accelMovement 4109 + " accel=" + accel); 4110 if (accelMovement > movement) { 4111 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4112 + keycode); 4113 movement--; 4114 int repeatCount = accelMovement - movement; 4115 enqueueInputEvent(new KeyEvent(curTime, curTime, 4116 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4117 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4118 InputDevice.SOURCE_KEYBOARD)); 4119 } 4120 while (movement > 0) { 4121 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4122 + keycode); 4123 movement--; 4124 curTime = SystemClock.uptimeMillis(); 4125 enqueueInputEvent(new KeyEvent(curTime, curTime, 4126 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4127 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4128 InputDevice.SOURCE_KEYBOARD)); 4129 enqueueInputEvent(new KeyEvent(curTime, curTime, 4130 KeyEvent.ACTION_UP, keycode, 0, metaState, 4131 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4132 InputDevice.SOURCE_KEYBOARD)); 4133 } 4134 mLastTime = curTime; 4135 } 4136 } 4137 4138 public void cancel(MotionEvent event) { 4139 mLastTime = Integer.MIN_VALUE; 4140 4141 // If we reach this, we consumed a trackball event. 4142 // Because we will not translate the trackball event into a key event, 4143 // touch mode will not exit, so we exit touch mode here. 4144 if (mView != null && mAdded) { 4145 ensureTouchMode(false); 4146 } 4147 } 4148 } 4149 4150 /** 4151 * Maintains state information for a single trackball axis, generating 4152 * discrete (DPAD) movements based on raw trackball motion. 4153 */ 4154 static final class TrackballAxis { 4155 /** 4156 * The maximum amount of acceleration we will apply. 4157 */ 4158 static final float MAX_ACCELERATION = 20; 4159 4160 /** 4161 * The maximum amount of time (in milliseconds) between events in order 4162 * for us to consider the user to be doing fast trackball movements, 4163 * and thus apply an acceleration. 4164 */ 4165 static final long FAST_MOVE_TIME = 150; 4166 4167 /** 4168 * Scaling factor to the time (in milliseconds) between events to how 4169 * much to multiple/divide the current acceleration. When movement 4170 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4171 * FAST_MOVE_TIME it divides it. 4172 */ 4173 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4174 4175 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4176 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4177 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4178 4179 float position; 4180 float acceleration = 1; 4181 long lastMoveTime = 0; 4182 int step; 4183 int dir; 4184 int nonAccelMovement; 4185 4186 void reset(int _step) { 4187 position = 0; 4188 acceleration = 1; 4189 lastMoveTime = 0; 4190 step = _step; 4191 dir = 0; 4192 } 4193 4194 /** 4195 * Add trackball movement into the state. If the direction of movement 4196 * has been reversed, the state is reset before adding the 4197 * movement (so that you don't have to compensate for any previously 4198 * collected movement before see the result of the movement in the 4199 * new direction). 4200 * 4201 * @return Returns the absolute value of the amount of movement 4202 * collected so far. 4203 */ 4204 float collect(float off, long time, String axis) { 4205 long normTime; 4206 if (off > 0) { 4207 normTime = (long)(off * FAST_MOVE_TIME); 4208 if (dir < 0) { 4209 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4210 position = 0; 4211 step = 0; 4212 acceleration = 1; 4213 lastMoveTime = 0; 4214 } 4215 dir = 1; 4216 } else if (off < 0) { 4217 normTime = (long)((-off) * FAST_MOVE_TIME); 4218 if (dir > 0) { 4219 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4220 position = 0; 4221 step = 0; 4222 acceleration = 1; 4223 lastMoveTime = 0; 4224 } 4225 dir = -1; 4226 } else { 4227 normTime = 0; 4228 } 4229 4230 // The number of milliseconds between each movement that is 4231 // considered "normal" and will not result in any acceleration 4232 // or deceleration, scaled by the offset we have here. 4233 if (normTime > 0) { 4234 long delta = time - lastMoveTime; 4235 lastMoveTime = time; 4236 float acc = acceleration; 4237 if (delta < normTime) { 4238 // The user is scrolling rapidly, so increase acceleration. 4239 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4240 if (scale > 1) acc *= scale; 4241 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4242 + off + " normTime=" + normTime + " delta=" + delta 4243 + " scale=" + scale + " acc=" + acc); 4244 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4245 } else { 4246 // The user is scrolling slowly, so decrease acceleration. 4247 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4248 if (scale > 1) acc /= scale; 4249 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4250 + off + " normTime=" + normTime + " delta=" + delta 4251 + " scale=" + scale + " acc=" + acc); 4252 acceleration = acc > 1 ? acc : 1; 4253 } 4254 } 4255 position += off; 4256 return Math.abs(position); 4257 } 4258 4259 /** 4260 * Generate the number of discrete movement events appropriate for 4261 * the currently collected trackball movement. 4262 * 4263 * @return Returns the number of discrete movements, either positive 4264 * or negative, or 0 if there is not enough trackball movement yet 4265 * for a discrete movement. 4266 */ 4267 int generate() { 4268 int movement = 0; 4269 nonAccelMovement = 0; 4270 do { 4271 final int dir = position >= 0 ? 1 : -1; 4272 switch (step) { 4273 // If we are going to execute the first step, then we want 4274 // to do this as soon as possible instead of waiting for 4275 // a full movement, in order to make things look responsive. 4276 case 0: 4277 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4278 return movement; 4279 } 4280 movement += dir; 4281 nonAccelMovement += dir; 4282 step = 1; 4283 break; 4284 // If we have generated the first movement, then we need 4285 // to wait for the second complete trackball motion before 4286 // generating the second discrete movement. 4287 case 1: 4288 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4289 return movement; 4290 } 4291 movement += dir; 4292 nonAccelMovement += dir; 4293 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4294 step = 2; 4295 break; 4296 // After the first two, we generate discrete movements 4297 // consistently with the trackball, applying an acceleration 4298 // if the trackball is moving quickly. This is a simple 4299 // acceleration on top of what we already compute based 4300 // on how quickly the wheel is being turned, to apply 4301 // a longer increasing acceleration to continuous movement 4302 // in one direction. 4303 default: 4304 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4305 return movement; 4306 } 4307 movement += dir; 4308 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4309 float acc = acceleration; 4310 acc *= 1.1f; 4311 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4312 break; 4313 } 4314 } while (true); 4315 } 4316 } 4317 4318 /** 4319 * Creates dpad events from unhandled joystick movements. 4320 */ 4321 final class SyntheticJoystickHandler extends Handler { 4322 private final static String TAG = "SyntheticJoystickHandler"; 4323 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4324 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4325 4326 private int mLastXDirection; 4327 private int mLastYDirection; 4328 private int mLastXKeyCode; 4329 private int mLastYKeyCode; 4330 4331 public SyntheticJoystickHandler() { 4332 super(true); 4333 } 4334 4335 @Override 4336 public void handleMessage(Message msg) { 4337 switch (msg.what) { 4338 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4339 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4340 KeyEvent oldEvent = (KeyEvent)msg.obj; 4341 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4342 SystemClock.uptimeMillis(), 4343 oldEvent.getRepeatCount() + 1); 4344 if (mAttachInfo.mHasWindowFocus) { 4345 enqueueInputEvent(e); 4346 Message m = obtainMessage(msg.what, e); 4347 m.setAsynchronous(true); 4348 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4349 } 4350 } break; 4351 } 4352 } 4353 4354 public void process(MotionEvent event) { 4355 switch(event.getActionMasked()) { 4356 case MotionEvent.ACTION_CANCEL: 4357 cancel(event); 4358 break; 4359 case MotionEvent.ACTION_MOVE: 4360 update(event, true); 4361 break; 4362 default: 4363 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4364 } 4365 } 4366 4367 private void cancel(MotionEvent event) { 4368 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4369 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4370 update(event, false); 4371 } 4372 4373 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4374 final long time = event.getEventTime(); 4375 final int metaState = event.getMetaState(); 4376 final int deviceId = event.getDeviceId(); 4377 final int source = event.getSource(); 4378 4379 int xDirection = joystickAxisValueToDirection( 4380 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4381 if (xDirection == 0) { 4382 xDirection = joystickAxisValueToDirection(event.getX()); 4383 } 4384 4385 int yDirection = joystickAxisValueToDirection( 4386 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4387 if (yDirection == 0) { 4388 yDirection = joystickAxisValueToDirection(event.getY()); 4389 } 4390 4391 if (xDirection != mLastXDirection) { 4392 if (mLastXKeyCode != 0) { 4393 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4394 enqueueInputEvent(new KeyEvent(time, time, 4395 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4396 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4397 mLastXKeyCode = 0; 4398 } 4399 4400 mLastXDirection = xDirection; 4401 4402 if (xDirection != 0 && synthesizeNewKeys) { 4403 mLastXKeyCode = xDirection > 0 4404 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4405 final KeyEvent e = new KeyEvent(time, time, 4406 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4407 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4408 enqueueInputEvent(e); 4409 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4410 m.setAsynchronous(true); 4411 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4412 } 4413 } 4414 4415 if (yDirection != mLastYDirection) { 4416 if (mLastYKeyCode != 0) { 4417 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4418 enqueueInputEvent(new KeyEvent(time, time, 4419 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4420 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4421 mLastYKeyCode = 0; 4422 } 4423 4424 mLastYDirection = yDirection; 4425 4426 if (yDirection != 0 && synthesizeNewKeys) { 4427 mLastYKeyCode = yDirection > 0 4428 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4429 final KeyEvent e = new KeyEvent(time, time, 4430 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4431 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4432 enqueueInputEvent(e); 4433 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4434 m.setAsynchronous(true); 4435 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4436 } 4437 } 4438 } 4439 4440 private int joystickAxisValueToDirection(float value) { 4441 if (value >= 0.5f) { 4442 return 1; 4443 } else if (value <= -0.5f) { 4444 return -1; 4445 } else { 4446 return 0; 4447 } 4448 } 4449 } 4450 4451 /** 4452 * Creates dpad events from unhandled touch navigation movements. 4453 */ 4454 final class SyntheticTouchNavigationHandler extends Handler { 4455 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4456 private static final boolean LOCAL_DEBUG = false; 4457 4458 // Assumed nominal width and height in millimeters of a touch navigation pad, 4459 // if no resolution information is available from the input system. 4460 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4461 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4462 4463 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4464 4465 // The nominal distance traveled to move by one unit. 4466 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4467 4468 // Minimum and maximum fling velocity in ticks per second. 4469 // The minimum velocity should be set such that we perform enough ticks per 4470 // second that the fling appears to be fluid. For example, if we set the minimum 4471 // to 2 ticks per second, then there may be up to half a second delay between the next 4472 // to last and last ticks which is noticeably discrete and jerky. This value should 4473 // probably not be set to anything less than about 4. 4474 // If fling accuracy is a problem then consider tuning the tick distance instead. 4475 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4476 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4477 4478 // Fling velocity decay factor applied after each new key is emitted. 4479 // This parameter controls the deceleration and overall duration of the fling. 4480 // The fling stops automatically when its velocity drops below the minimum 4481 // fling velocity defined above. 4482 private static final float FLING_TICK_DECAY = 0.8f; 4483 4484 /* The input device that we are tracking. */ 4485 4486 private int mCurrentDeviceId = -1; 4487 private int mCurrentSource; 4488 private boolean mCurrentDeviceSupported; 4489 4490 /* Configuration for the current input device. */ 4491 4492 // The scaled tick distance. A movement of this amount should generally translate 4493 // into a single dpad event in a given direction. 4494 private float mConfigTickDistance; 4495 4496 // The minimum and maximum scaled fling velocity. 4497 private float mConfigMinFlingVelocity; 4498 private float mConfigMaxFlingVelocity; 4499 4500 /* Tracking state. */ 4501 4502 // The velocity tracker for detecting flings. 4503 private VelocityTracker mVelocityTracker; 4504 4505 // The active pointer id, or -1 if none. 4506 private int mActivePointerId = -1; 4507 4508 // Time and location where tracking started. 4509 private long mStartTime; 4510 private float mStartX; 4511 private float mStartY; 4512 4513 // Most recently observed position. 4514 private float mLastX; 4515 private float mLastY; 4516 4517 // Accumulated movement delta since the last direction key was sent. 4518 private float mAccumulatedX; 4519 private float mAccumulatedY; 4520 4521 // Set to true if any movement was delivered to the app. 4522 // Implies that tap slop was exceeded. 4523 private boolean mConsumedMovement; 4524 4525 // The most recently sent key down event. 4526 // The keycode remains set until the direction changes or a fling ends 4527 // so that repeated key events may be generated as required. 4528 private long mPendingKeyDownTime; 4529 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4530 private int mPendingKeyRepeatCount; 4531 private int mPendingKeyMetaState; 4532 4533 // The current fling velocity while a fling is in progress. 4534 private boolean mFlinging; 4535 private float mFlingVelocity; 4536 4537 // The last time a confirm key was pressed on the touch nav device 4538 private long mLastConfirmKeyTime = Long.MAX_VALUE; 4539 4540 public SyntheticTouchNavigationHandler() { 4541 super(true); 4542 } 4543 4544 public void process(MotionEvent event) { 4545 // Update the current device information. 4546 final long time = event.getEventTime(); 4547 final int deviceId = event.getDeviceId(); 4548 final int source = event.getSource(); 4549 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4550 finishKeys(time); 4551 finishTracking(time); 4552 mCurrentDeviceId = deviceId; 4553 mCurrentSource = source; 4554 mCurrentDeviceSupported = false; 4555 InputDevice device = event.getDevice(); 4556 if (device != null) { 4557 // In order to support an input device, we must know certain 4558 // characteristics about it, such as its size and resolution. 4559 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4560 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4561 if (xRange != null && yRange != null) { 4562 mCurrentDeviceSupported = true; 4563 4564 // Infer the resolution if it not actually known. 4565 float xRes = xRange.getResolution(); 4566 if (xRes <= 0) { 4567 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4568 } 4569 float yRes = yRange.getResolution(); 4570 if (yRes <= 0) { 4571 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4572 } 4573 float nominalRes = (xRes + yRes) * 0.5f; 4574 4575 // Precompute all of the configuration thresholds we will need. 4576 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4577 mConfigMinFlingVelocity = 4578 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4579 mConfigMaxFlingVelocity = 4580 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4581 4582 if (LOCAL_DEBUG) { 4583 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4584 + " (" + Integer.toHexString(mCurrentSource) + "): " 4585 + ", mConfigTickDistance=" + mConfigTickDistance 4586 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4587 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4588 } 4589 } 4590 } 4591 } 4592 if (!mCurrentDeviceSupported) { 4593 return; 4594 } 4595 4596 // Handle the event. 4597 final int action = event.getActionMasked(); 4598 switch (action) { 4599 case MotionEvent.ACTION_DOWN: { 4600 boolean caughtFling = mFlinging; 4601 finishKeys(time); 4602 finishTracking(time); 4603 mActivePointerId = event.getPointerId(0); 4604 mVelocityTracker = VelocityTracker.obtain(); 4605 mVelocityTracker.addMovement(event); 4606 mStartTime = time; 4607 mStartX = event.getX(); 4608 mStartY = event.getY(); 4609 mLastX = mStartX; 4610 mLastY = mStartY; 4611 mAccumulatedX = 0; 4612 mAccumulatedY = 0; 4613 4614 // If we caught a fling, then pretend that the tap slop has already 4615 // been exceeded to suppress taps whose only purpose is to stop the fling. 4616 mConsumedMovement = caughtFling; 4617 break; 4618 } 4619 4620 case MotionEvent.ACTION_MOVE: 4621 case MotionEvent.ACTION_UP: { 4622 if (mActivePointerId < 0) { 4623 break; 4624 } 4625 final int index = event.findPointerIndex(mActivePointerId); 4626 if (index < 0) { 4627 finishKeys(time); 4628 finishTracking(time); 4629 break; 4630 } 4631 4632 mVelocityTracker.addMovement(event); 4633 final float x = event.getX(index); 4634 final float y = event.getY(index); 4635 mAccumulatedX += x - mLastX; 4636 mAccumulatedY += y - mLastY; 4637 mLastX = x; 4638 mLastY = y; 4639 4640 // Consume any accumulated movement so far. 4641 final int metaState = event.getMetaState(); 4642 consumeAccumulatedMovement(time, metaState); 4643 4644 // Detect taps and flings. 4645 if (action == MotionEvent.ACTION_UP) { 4646 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4647 // It might be a fling. 4648 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4649 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4650 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4651 if (!startFling(time, vx, vy)) { 4652 finishKeys(time); 4653 } 4654 } 4655 finishTracking(time); 4656 } 4657 break; 4658 } 4659 4660 case MotionEvent.ACTION_CANCEL: { 4661 finishKeys(time); 4662 finishTracking(time); 4663 break; 4664 } 4665 } 4666 } 4667 4668 public void cancel(MotionEvent event) { 4669 if (mCurrentDeviceId == event.getDeviceId() 4670 && mCurrentSource == event.getSource()) { 4671 final long time = event.getEventTime(); 4672 finishKeys(time); 4673 finishTracking(time); 4674 } 4675 } 4676 4677 private void finishKeys(long time) { 4678 cancelFling(); 4679 sendKeyUp(time); 4680 } 4681 4682 private void finishTracking(long time) { 4683 if (mActivePointerId >= 0) { 4684 mActivePointerId = -1; 4685 mVelocityTracker.recycle(); 4686 mVelocityTracker = null; 4687 } 4688 } 4689 4690 private void consumeAccumulatedMovement(long time, int metaState) { 4691 final float absX = Math.abs(mAccumulatedX); 4692 final float absY = Math.abs(mAccumulatedY); 4693 if (absX >= absY) { 4694 if (absX >= mConfigTickDistance) { 4695 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4696 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4697 mAccumulatedY = 0; 4698 mConsumedMovement = true; 4699 } 4700 } else { 4701 if (absY >= mConfigTickDistance) { 4702 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4703 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4704 mAccumulatedX = 0; 4705 mConsumedMovement = true; 4706 } 4707 } 4708 } 4709 4710 private float consumeAccumulatedMovement(long time, int metaState, 4711 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4712 while (accumulator <= -mConfigTickDistance) { 4713 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4714 accumulator += mConfigTickDistance; 4715 } 4716 while (accumulator >= mConfigTickDistance) { 4717 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4718 accumulator -= mConfigTickDistance; 4719 } 4720 return accumulator; 4721 } 4722 4723 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4724 if (mPendingKeyCode != keyCode) { 4725 sendKeyUp(time); 4726 mPendingKeyDownTime = time; 4727 mPendingKeyCode = keyCode; 4728 mPendingKeyRepeatCount = 0; 4729 } else { 4730 mPendingKeyRepeatCount += 1; 4731 } 4732 mPendingKeyMetaState = metaState; 4733 4734 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4735 // but it doesn't quite make sense when simulating the events in this way. 4736 if (LOCAL_DEBUG) { 4737 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4738 + ", repeatCount=" + mPendingKeyRepeatCount 4739 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4740 } 4741 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4742 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4743 mPendingKeyMetaState, mCurrentDeviceId, 4744 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4745 } 4746 4747 private void sendKeyUp(long time) { 4748 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4749 if (LOCAL_DEBUG) { 4750 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4751 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4752 } 4753 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4754 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4755 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4756 mCurrentSource)); 4757 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4758 } 4759 } 4760 4761 private boolean startFling(long time, float vx, float vy) { 4762 if (LOCAL_DEBUG) { 4763 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4764 + ", min=" + mConfigMinFlingVelocity); 4765 } 4766 4767 // Flings must be oriented in the same direction as the preceding movements. 4768 switch (mPendingKeyCode) { 4769 case KeyEvent.KEYCODE_DPAD_LEFT: 4770 if (-vx >= mConfigMinFlingVelocity 4771 && Math.abs(vy) < mConfigMinFlingVelocity) { 4772 mFlingVelocity = -vx; 4773 break; 4774 } 4775 return false; 4776 4777 case KeyEvent.KEYCODE_DPAD_RIGHT: 4778 if (vx >= mConfigMinFlingVelocity 4779 && Math.abs(vy) < mConfigMinFlingVelocity) { 4780 mFlingVelocity = vx; 4781 break; 4782 } 4783 return false; 4784 4785 case KeyEvent.KEYCODE_DPAD_UP: 4786 if (-vy >= mConfigMinFlingVelocity 4787 && Math.abs(vx) < mConfigMinFlingVelocity) { 4788 mFlingVelocity = -vy; 4789 break; 4790 } 4791 return false; 4792 4793 case KeyEvent.KEYCODE_DPAD_DOWN: 4794 if (vy >= mConfigMinFlingVelocity 4795 && Math.abs(vx) < mConfigMinFlingVelocity) { 4796 mFlingVelocity = vy; 4797 break; 4798 } 4799 return false; 4800 } 4801 4802 // Post the first fling event. 4803 mFlinging = postFling(time); 4804 return mFlinging; 4805 } 4806 4807 private boolean postFling(long time) { 4808 // The idea here is to estimate the time when the pointer would have 4809 // traveled one tick distance unit given the current fling velocity. 4810 // This effect creates continuity of motion. 4811 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4812 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4813 postAtTime(mFlingRunnable, time + delay); 4814 if (LOCAL_DEBUG) { 4815 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4816 + mFlingVelocity + ", delay=" + delay 4817 + ", keyCode=" + mPendingKeyCode); 4818 } 4819 return true; 4820 } 4821 return false; 4822 } 4823 4824 private void cancelFling() { 4825 if (mFlinging) { 4826 removeCallbacks(mFlingRunnable); 4827 mFlinging = false; 4828 } 4829 } 4830 4831 private final Runnable mFlingRunnable = new Runnable() { 4832 @Override 4833 public void run() { 4834 final long time = SystemClock.uptimeMillis(); 4835 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4836 mFlingVelocity *= FLING_TICK_DECAY; 4837 if (!postFling(time)) { 4838 mFlinging = false; 4839 finishKeys(time); 4840 } 4841 } 4842 }; 4843 } 4844 4845 /** 4846 * Returns true if the key is used for keyboard navigation. 4847 * @param keyEvent The key event. 4848 * @return True if the key is used for keyboard navigation. 4849 */ 4850 private static boolean isNavigationKey(KeyEvent keyEvent) { 4851 switch (keyEvent.getKeyCode()) { 4852 case KeyEvent.KEYCODE_DPAD_LEFT: 4853 case KeyEvent.KEYCODE_DPAD_RIGHT: 4854 case KeyEvent.KEYCODE_DPAD_UP: 4855 case KeyEvent.KEYCODE_DPAD_DOWN: 4856 case KeyEvent.KEYCODE_DPAD_CENTER: 4857 case KeyEvent.KEYCODE_PAGE_UP: 4858 case KeyEvent.KEYCODE_PAGE_DOWN: 4859 case KeyEvent.KEYCODE_MOVE_HOME: 4860 case KeyEvent.KEYCODE_MOVE_END: 4861 case KeyEvent.KEYCODE_TAB: 4862 case KeyEvent.KEYCODE_SPACE: 4863 case KeyEvent.KEYCODE_ENTER: 4864 return true; 4865 } 4866 return false; 4867 } 4868 4869 /** 4870 * Returns true if the key is used for typing. 4871 * @param keyEvent The key event. 4872 * @return True if the key is used for typing. 4873 */ 4874 private static boolean isTypingKey(KeyEvent keyEvent) { 4875 return keyEvent.getUnicodeChar() > 0; 4876 } 4877 4878 /** 4879 * See if the key event means we should leave touch mode (and leave touch mode if so). 4880 * @param event The key event. 4881 * @return Whether this key event should be consumed (meaning the act of 4882 * leaving touch mode alone is considered the event). 4883 */ 4884 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4885 // Only relevant in touch mode. 4886 if (!mAttachInfo.mInTouchMode) { 4887 return false; 4888 } 4889 4890 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4891 final int action = event.getAction(); 4892 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4893 return false; 4894 } 4895 4896 // Don't leave touch mode if the IME told us not to. 4897 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4898 return false; 4899 } 4900 4901 // If the key can be used for keyboard navigation then leave touch mode 4902 // and select a focused view if needed (in ensureTouchMode). 4903 // When a new focused view is selected, we consume the navigation key because 4904 // navigation doesn't make much sense unless a view already has focus so 4905 // the key's purpose is to set focus. 4906 if (isNavigationKey(event)) { 4907 return ensureTouchMode(false); 4908 } 4909 4910 // If the key can be used for typing then leave touch mode 4911 // and select a focused view if needed (in ensureTouchMode). 4912 // Always allow the view to process the typing key. 4913 if (isTypingKey(event)) { 4914 ensureTouchMode(false); 4915 return false; 4916 } 4917 4918 return false; 4919 } 4920 4921 /* drag/drop */ 4922 void setLocalDragState(Object obj) { 4923 mLocalDragState = obj; 4924 } 4925 4926 private void handleDragEvent(DragEvent event) { 4927 // From the root, only drag start/end/location are dispatched. entered/exited 4928 // are determined and dispatched by the viewgroup hierarchy, who then report 4929 // that back here for ultimate reporting back to the framework. 4930 if (mView != null && mAdded) { 4931 final int what = event.mAction; 4932 4933 if (what == DragEvent.ACTION_DRAG_EXITED) { 4934 // A direct EXITED event means that the window manager knows we've just crossed 4935 // a window boundary, so the current drag target within this one must have 4936 // just been exited. Send it the usual notifications and then we're done 4937 // for now. 4938 mView.dispatchDragEvent(event); 4939 } else { 4940 // Cache the drag description when the operation starts, then fill it in 4941 // on subsequent calls as a convenience 4942 if (what == DragEvent.ACTION_DRAG_STARTED) { 4943 mCurrentDragView = null; // Start the current-recipient tracking 4944 mDragDescription = event.mClipDescription; 4945 } else { 4946 event.mClipDescription = mDragDescription; 4947 } 4948 4949 // For events with a [screen] location, translate into window coordinates 4950 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4951 mDragPoint.set(event.mX, event.mY); 4952 if (mTranslator != null) { 4953 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4954 } 4955 4956 if (mCurScrollY != 0) { 4957 mDragPoint.offset(0, mCurScrollY); 4958 } 4959 4960 event.mX = mDragPoint.x; 4961 event.mY = mDragPoint.y; 4962 } 4963 4964 // Remember who the current drag target is pre-dispatch 4965 final View prevDragView = mCurrentDragView; 4966 4967 // Now dispatch the drag/drop event 4968 boolean result = mView.dispatchDragEvent(event); 4969 4970 // If we changed apparent drag target, tell the OS about it 4971 if (prevDragView != mCurrentDragView) { 4972 try { 4973 if (prevDragView != null) { 4974 mWindowSession.dragRecipientExited(mWindow); 4975 } 4976 if (mCurrentDragView != null) { 4977 mWindowSession.dragRecipientEntered(mWindow); 4978 } 4979 } catch (RemoteException e) { 4980 Slog.e(TAG, "Unable to note drag target change"); 4981 } 4982 } 4983 4984 // Report the drop result when we're done 4985 if (what == DragEvent.ACTION_DROP) { 4986 mDragDescription = null; 4987 try { 4988 Log.i(TAG, "Reporting drop result: " + result); 4989 mWindowSession.reportDropResult(mWindow, result); 4990 } catch (RemoteException e) { 4991 Log.e(TAG, "Unable to report drop result"); 4992 } 4993 } 4994 4995 // When the drag operation ends, release any local state object 4996 // that may have been in use 4997 if (what == DragEvent.ACTION_DRAG_ENDED) { 4998 setLocalDragState(null); 4999 } 5000 } 5001 } 5002 event.recycle(); 5003 } 5004 5005 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5006 if (mSeq != args.seq) { 5007 // The sequence has changed, so we need to update our value and make 5008 // sure to do a traversal afterward so the window manager is given our 5009 // most recent data. 5010 mSeq = args.seq; 5011 mAttachInfo.mForceReportNewAttributes = true; 5012 scheduleTraversals(); 5013 } 5014 if (mView == null) return; 5015 if (args.localChanges != 0) { 5016 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5017 } 5018 if (mAttachInfo != null) { 5019 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5020 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5021 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5022 mView.dispatchSystemUiVisibilityChanged(visibility); 5023 } 5024 } 5025 } 5026 5027 public void handleDispatchDoneAnimating() { 5028 if (mWindowsAnimating) { 5029 mWindowsAnimating = false; 5030 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5031 scheduleTraversals(); 5032 } 5033 } 5034 } 5035 5036 public void getLastTouchPoint(Point outLocation) { 5037 outLocation.x = (int) mLastTouchPoint.x; 5038 outLocation.y = (int) mLastTouchPoint.y; 5039 } 5040 5041 public void setDragFocus(View newDragTarget) { 5042 if (mCurrentDragView != newDragTarget) { 5043 mCurrentDragView = newDragTarget; 5044 } 5045 } 5046 5047 private AudioManager getAudioManager() { 5048 if (mView == null) { 5049 throw new IllegalStateException("getAudioManager called when there is no mView"); 5050 } 5051 if (mAudioManager == null) { 5052 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5053 } 5054 return mAudioManager; 5055 } 5056 5057 public AccessibilityInteractionController getAccessibilityInteractionController() { 5058 if (mView == null) { 5059 throw new IllegalStateException("getAccessibilityInteractionController" 5060 + " called when there is no mView"); 5061 } 5062 if (mAccessibilityInteractionController == null) { 5063 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5064 } 5065 return mAccessibilityInteractionController; 5066 } 5067 5068 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5069 boolean insetsPending) throws RemoteException { 5070 5071 float appScale = mAttachInfo.mApplicationScale; 5072 boolean restore = false; 5073 if (params != null && mTranslator != null) { 5074 restore = true; 5075 params.backup(); 5076 mTranslator.translateWindowLayout(params); 5077 } 5078 if (params != null) { 5079 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5080 } 5081 mPendingConfiguration.seq = 0; 5082 //Log.d(TAG, ">>>>>> CALLING relayout"); 5083 if (params != null && mOrigWindowType != params.type) { 5084 // For compatibility with old apps, don't crash here. 5085 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5086 Slog.w(TAG, "Window type can not be changed after " 5087 + "the window is added; ignoring change of " + mView); 5088 params.type = mOrigWindowType; 5089 } 5090 } 5091 int relayoutResult = mWindowSession.relayout( 5092 mWindow, mSeq, params, 5093 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5094 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5095 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5096 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5097 mPendingConfiguration, mSurface); 5098 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5099 if (restore) { 5100 params.restore(); 5101 } 5102 5103 if (mTranslator != null) { 5104 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5105 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5106 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5107 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5108 } 5109 return relayoutResult; 5110 } 5111 5112 /** 5113 * {@inheritDoc} 5114 */ 5115 @Override 5116 public void playSoundEffect(int effectId) { 5117 checkThread(); 5118 5119 if (mMediaDisabled) { 5120 return; 5121 } 5122 5123 try { 5124 final AudioManager audioManager = getAudioManager(); 5125 5126 switch (effectId) { 5127 case SoundEffectConstants.CLICK: 5128 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5129 return; 5130 case SoundEffectConstants.NAVIGATION_DOWN: 5131 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5132 return; 5133 case SoundEffectConstants.NAVIGATION_LEFT: 5134 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5135 return; 5136 case SoundEffectConstants.NAVIGATION_RIGHT: 5137 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5138 return; 5139 case SoundEffectConstants.NAVIGATION_UP: 5140 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5141 return; 5142 default: 5143 throw new IllegalArgumentException("unknown effect id " + effectId + 5144 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5145 } 5146 } catch (IllegalStateException e) { 5147 // Exception thrown by getAudioManager() when mView is null 5148 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5149 e.printStackTrace(); 5150 } 5151 } 5152 5153 /** 5154 * {@inheritDoc} 5155 */ 5156 @Override 5157 public boolean performHapticFeedback(int effectId, boolean always) { 5158 try { 5159 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5160 } catch (RemoteException e) { 5161 return false; 5162 } 5163 } 5164 5165 /** 5166 * {@inheritDoc} 5167 */ 5168 @Override 5169 public View focusSearch(View focused, int direction) { 5170 checkThread(); 5171 if (!(mView instanceof ViewGroup)) { 5172 return null; 5173 } 5174 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5175 } 5176 5177 public void debug() { 5178 mView.debug(); 5179 } 5180 5181 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5182 String innerPrefix = prefix + " "; 5183 writer.print(prefix); writer.println("ViewRoot:"); 5184 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5185 writer.print(" mRemoved="); writer.println(mRemoved); 5186 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5187 writer.println(mConsumeBatchedInputScheduled); 5188 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5189 writer.println(mPendingInputEventCount); 5190 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5191 writer.println(mProcessInputEventsScheduled); 5192 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5193 writer.print(mTraversalScheduled); 5194 if (mTraversalScheduled) { 5195 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5196 } else { 5197 writer.println(); 5198 } 5199 mFirstInputStage.dump(innerPrefix, writer); 5200 5201 mChoreographer.dump(prefix, writer); 5202 5203 writer.print(prefix); writer.println("View Hierarchy:"); 5204 dumpViewHierarchy(innerPrefix, writer, mView); 5205 } 5206 5207 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5208 writer.print(prefix); 5209 if (view == null) { 5210 writer.println("null"); 5211 return; 5212 } 5213 writer.println(view.toString()); 5214 if (!(view instanceof ViewGroup)) { 5215 return; 5216 } 5217 ViewGroup grp = (ViewGroup)view; 5218 final int N = grp.getChildCount(); 5219 if (N <= 0) { 5220 return; 5221 } 5222 prefix = prefix + " "; 5223 for (int i=0; i<N; i++) { 5224 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5225 } 5226 } 5227 5228 public void dumpGfxInfo(int[] info) { 5229 info[0] = info[1] = 0; 5230 if (mView != null) { 5231 getGfxInfo(mView, info); 5232 } 5233 } 5234 5235 private static void getGfxInfo(View view, int[] info) { 5236 DisplayList displayList = view.mDisplayList; 5237 info[0]++; 5238 if (displayList != null) { 5239 info[1] += displayList.getSize(); 5240 } 5241 5242 if (view instanceof ViewGroup) { 5243 ViewGroup group = (ViewGroup) view; 5244 5245 int count = group.getChildCount(); 5246 for (int i = 0; i < count; i++) { 5247 getGfxInfo(group.getChildAt(i), info); 5248 } 5249 } 5250 } 5251 5252 /** 5253 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5254 * @return True, request has been queued. False, request has been completed. 5255 */ 5256 boolean die(boolean immediate) { 5257 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5258 // done by dispatchDetachedFromWindow will cause havoc on return. 5259 if (immediate && !mIsInTraversal) { 5260 doDie(); 5261 return false; 5262 } 5263 5264 if (!mIsDrawing) { 5265 destroyHardwareRenderer(); 5266 } else { 5267 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5268 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5269 } 5270 mHandler.sendEmptyMessage(MSG_DIE); 5271 return true; 5272 } 5273 5274 void doDie() { 5275 checkThread(); 5276 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5277 synchronized (this) { 5278 if (mRemoved) { 5279 return; 5280 } 5281 mRemoved = true; 5282 if (mAdded) { 5283 dispatchDetachedFromWindow(); 5284 } 5285 5286 if (mAdded && !mFirst) { 5287 invalidateDisplayLists(); 5288 destroyHardwareRenderer(); 5289 5290 if (mView != null) { 5291 int viewVisibility = mView.getVisibility(); 5292 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5293 if (mWindowAttributesChanged || viewVisibilityChanged) { 5294 // If layout params have been changed, first give them 5295 // to the window manager to make sure it has the correct 5296 // animation info. 5297 try { 5298 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5299 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5300 mWindowSession.finishDrawing(mWindow); 5301 } 5302 } catch (RemoteException e) { 5303 } 5304 } 5305 5306 mSurface.release(); 5307 } 5308 } 5309 5310 mAdded = false; 5311 } 5312 WindowManagerGlobal.getInstance().doRemoveView(this); 5313 } 5314 5315 public void requestUpdateConfiguration(Configuration config) { 5316 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5317 mHandler.sendMessage(msg); 5318 } 5319 5320 public void loadSystemProperties() { 5321 mHandler.post(new Runnable() { 5322 @Override 5323 public void run() { 5324 // Profiling 5325 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5326 profileRendering(mAttachInfo.mHasWindowFocus); 5327 5328 // Media (used by sound effects) 5329 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5330 5331 // Hardware rendering 5332 if (mAttachInfo.mHardwareRenderer != null) { 5333 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5334 invalidate(); 5335 } 5336 } 5337 5338 // Layout debugging 5339 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5340 if (layout != mAttachInfo.mDebugLayout) { 5341 mAttachInfo.mDebugLayout = layout; 5342 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5343 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5344 } 5345 } 5346 } 5347 }); 5348 } 5349 5350 private void destroyHardwareRenderer() { 5351 AttachInfo attachInfo = mAttachInfo; 5352 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5353 5354 if (hardwareRenderer != null) { 5355 if (mView != null) { 5356 hardwareRenderer.destroyHardwareResources(mView); 5357 } 5358 hardwareRenderer.destroy(true); 5359 hardwareRenderer.setRequested(false); 5360 5361 attachInfo.mHardwareRenderer = null; 5362 attachInfo.mHardwareAccelerated = false; 5363 } 5364 } 5365 5366 public void dispatchFinishInputConnection(InputConnection connection) { 5367 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5368 mHandler.sendMessage(msg); 5369 } 5370 5371 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5372 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5373 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5374 + " contentInsets=" + contentInsets.toShortString() 5375 + " visibleInsets=" + visibleInsets.toShortString() 5376 + " reportDraw=" + reportDraw); 5377 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5378 if (mTranslator != null) { 5379 mTranslator.translateRectInScreenToAppWindow(frame); 5380 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5381 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5382 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5383 } 5384 SomeArgs args = SomeArgs.obtain(); 5385 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5386 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5387 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5388 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5389 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5390 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5391 msg.obj = args; 5392 mHandler.sendMessage(msg); 5393 } 5394 5395 public void dispatchMoved(int newX, int newY) { 5396 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5397 if (mTranslator != null) { 5398 PointF point = new PointF(newX, newY); 5399 mTranslator.translatePointInScreenToAppWindow(point); 5400 newX = (int) (point.x + 0.5); 5401 newY = (int) (point.y + 0.5); 5402 } 5403 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5404 mHandler.sendMessage(msg); 5405 } 5406 5407 /** 5408 * Represents a pending input event that is waiting in a queue. 5409 * 5410 * Input events are processed in serial order by the timestamp specified by 5411 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5412 * one input event to the application at a time and waits for the application 5413 * to finish handling it before delivering the next one. 5414 * 5415 * However, because the application or IME can synthesize and inject multiple 5416 * key events at a time without going through the input dispatcher, we end up 5417 * needing a queue on the application's side. 5418 */ 5419 private static final class QueuedInputEvent { 5420 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5421 public static final int FLAG_DEFERRED = 1 << 1; 5422 public static final int FLAG_FINISHED = 1 << 2; 5423 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5424 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5425 5426 public QueuedInputEvent mNext; 5427 5428 public InputEvent mEvent; 5429 public InputEventReceiver mReceiver; 5430 public int mFlags; 5431 5432 public boolean shouldSkipIme() { 5433 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5434 return true; 5435 } 5436 return mEvent instanceof MotionEvent 5437 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5438 } 5439 } 5440 5441 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5442 InputEventReceiver receiver, int flags) { 5443 QueuedInputEvent q = mQueuedInputEventPool; 5444 if (q != null) { 5445 mQueuedInputEventPoolSize -= 1; 5446 mQueuedInputEventPool = q.mNext; 5447 q.mNext = null; 5448 } else { 5449 q = new QueuedInputEvent(); 5450 } 5451 5452 q.mEvent = event; 5453 q.mReceiver = receiver; 5454 q.mFlags = flags; 5455 return q; 5456 } 5457 5458 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5459 q.mEvent = null; 5460 q.mReceiver = null; 5461 5462 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5463 mQueuedInputEventPoolSize += 1; 5464 q.mNext = mQueuedInputEventPool; 5465 mQueuedInputEventPool = q; 5466 } 5467 } 5468 5469 void enqueueInputEvent(InputEvent event) { 5470 enqueueInputEvent(event, null, 0, false); 5471 } 5472 5473 void enqueueInputEvent(InputEvent event, 5474 InputEventReceiver receiver, int flags, boolean processImmediately) { 5475 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5476 5477 // Always enqueue the input event in order, regardless of its time stamp. 5478 // We do this because the application or the IME may inject key events 5479 // in response to touch events and we want to ensure that the injected keys 5480 // are processed in the order they were received and we cannot trust that 5481 // the time stamp of injected events are monotonic. 5482 QueuedInputEvent last = mPendingInputEventTail; 5483 if (last == null) { 5484 mPendingInputEventHead = q; 5485 mPendingInputEventTail = q; 5486 } else { 5487 last.mNext = q; 5488 mPendingInputEventTail = q; 5489 } 5490 mPendingInputEventCount += 1; 5491 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5492 mPendingInputEventCount); 5493 5494 if (processImmediately) { 5495 doProcessInputEvents(); 5496 } else { 5497 scheduleProcessInputEvents(); 5498 } 5499 } 5500 5501 private void scheduleProcessInputEvents() { 5502 if (!mProcessInputEventsScheduled) { 5503 mProcessInputEventsScheduled = true; 5504 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5505 msg.setAsynchronous(true); 5506 mHandler.sendMessage(msg); 5507 } 5508 } 5509 5510 void doProcessInputEvents() { 5511 // Deliver all pending input events in the queue. 5512 while (mPendingInputEventHead != null) { 5513 QueuedInputEvent q = mPendingInputEventHead; 5514 mPendingInputEventHead = q.mNext; 5515 if (mPendingInputEventHead == null) { 5516 mPendingInputEventTail = null; 5517 } 5518 q.mNext = null; 5519 5520 mPendingInputEventCount -= 1; 5521 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5522 mPendingInputEventCount); 5523 5524 deliverInputEvent(q); 5525 } 5526 5527 // We are done processing all input events that we can process right now 5528 // so we can clear the pending flag immediately. 5529 if (mProcessInputEventsScheduled) { 5530 mProcessInputEventsScheduled = false; 5531 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5532 } 5533 } 5534 5535 private void deliverInputEvent(QueuedInputEvent q) { 5536 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5537 try { 5538 if (mInputEventConsistencyVerifier != null) { 5539 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5540 } 5541 5542 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5543 if (stage != null) { 5544 stage.deliver(q); 5545 } else { 5546 finishInputEvent(q); 5547 } 5548 } finally { 5549 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5550 } 5551 } 5552 5553 private void finishInputEvent(QueuedInputEvent q) { 5554 if (q.mReceiver != null) { 5555 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5556 q.mReceiver.finishInputEvent(q.mEvent, handled); 5557 } else { 5558 q.mEvent.recycleIfNeededAfterDispatch(); 5559 } 5560 5561 recycleQueuedInputEvent(q); 5562 } 5563 5564 static boolean isTerminalInputEvent(InputEvent event) { 5565 if (event instanceof KeyEvent) { 5566 final KeyEvent keyEvent = (KeyEvent)event; 5567 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5568 } else { 5569 final MotionEvent motionEvent = (MotionEvent)event; 5570 final int action = motionEvent.getAction(); 5571 return action == MotionEvent.ACTION_UP 5572 || action == MotionEvent.ACTION_CANCEL 5573 || action == MotionEvent.ACTION_HOVER_EXIT; 5574 } 5575 } 5576 5577 void scheduleConsumeBatchedInput() { 5578 if (!mConsumeBatchedInputScheduled) { 5579 mConsumeBatchedInputScheduled = true; 5580 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5581 mConsumedBatchedInputRunnable, null); 5582 } 5583 } 5584 5585 void unscheduleConsumeBatchedInput() { 5586 if (mConsumeBatchedInputScheduled) { 5587 mConsumeBatchedInputScheduled = false; 5588 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5589 mConsumedBatchedInputRunnable, null); 5590 } 5591 } 5592 5593 void doConsumeBatchedInput(long frameTimeNanos) { 5594 if (mConsumeBatchedInputScheduled) { 5595 mConsumeBatchedInputScheduled = false; 5596 if (mInputEventReceiver != null) { 5597 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos)) { 5598 // If we consumed a batch here, we want to go ahead and schedule the 5599 // consumption of batched input events on the next frame. Otherwise, we would 5600 // wait until we have more input events pending and might get starved by other 5601 // things occurring in the process. 5602 scheduleConsumeBatchedInput(); 5603 } 5604 } 5605 doProcessInputEvents(); 5606 } 5607 } 5608 5609 final class TraversalRunnable implements Runnable { 5610 @Override 5611 public void run() { 5612 doTraversal(); 5613 } 5614 } 5615 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5616 5617 final class WindowInputEventReceiver extends InputEventReceiver { 5618 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5619 super(inputChannel, looper); 5620 } 5621 5622 @Override 5623 public void onInputEvent(InputEvent event) { 5624 enqueueInputEvent(event, this, 0, true); 5625 } 5626 5627 @Override 5628 public void onBatchedInputEventPending() { 5629 scheduleConsumeBatchedInput(); 5630 } 5631 5632 @Override 5633 public void dispose() { 5634 unscheduleConsumeBatchedInput(); 5635 super.dispose(); 5636 } 5637 } 5638 WindowInputEventReceiver mInputEventReceiver; 5639 5640 final class ConsumeBatchedInputRunnable implements Runnable { 5641 @Override 5642 public void run() { 5643 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5644 } 5645 } 5646 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5647 new ConsumeBatchedInputRunnable(); 5648 boolean mConsumeBatchedInputScheduled; 5649 5650 final class InvalidateOnAnimationRunnable implements Runnable { 5651 private boolean mPosted; 5652 private final ArrayList<View> mViews = new ArrayList<View>(); 5653 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5654 new ArrayList<AttachInfo.InvalidateInfo>(); 5655 private View[] mTempViews; 5656 private AttachInfo.InvalidateInfo[] mTempViewRects; 5657 5658 public void addView(View view) { 5659 synchronized (this) { 5660 mViews.add(view); 5661 postIfNeededLocked(); 5662 } 5663 } 5664 5665 public void addViewRect(AttachInfo.InvalidateInfo info) { 5666 synchronized (this) { 5667 mViewRects.add(info); 5668 postIfNeededLocked(); 5669 } 5670 } 5671 5672 public void removeView(View view) { 5673 synchronized (this) { 5674 mViews.remove(view); 5675 5676 for (int i = mViewRects.size(); i-- > 0; ) { 5677 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5678 if (info.target == view) { 5679 mViewRects.remove(i); 5680 info.recycle(); 5681 } 5682 } 5683 5684 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5685 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5686 mPosted = false; 5687 } 5688 } 5689 } 5690 5691 @Override 5692 public void run() { 5693 final int viewCount; 5694 final int viewRectCount; 5695 synchronized (this) { 5696 mPosted = false; 5697 5698 viewCount = mViews.size(); 5699 if (viewCount != 0) { 5700 mTempViews = mViews.toArray(mTempViews != null 5701 ? mTempViews : new View[viewCount]); 5702 mViews.clear(); 5703 } 5704 5705 viewRectCount = mViewRects.size(); 5706 if (viewRectCount != 0) { 5707 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5708 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5709 mViewRects.clear(); 5710 } 5711 } 5712 5713 for (int i = 0; i < viewCount; i++) { 5714 mTempViews[i].invalidate(); 5715 mTempViews[i] = null; 5716 } 5717 5718 for (int i = 0; i < viewRectCount; i++) { 5719 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5720 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5721 info.recycle(); 5722 } 5723 } 5724 5725 private void postIfNeededLocked() { 5726 if (!mPosted) { 5727 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5728 mPosted = true; 5729 } 5730 } 5731 } 5732 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5733 new InvalidateOnAnimationRunnable(); 5734 5735 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5736 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5737 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5738 } 5739 5740 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5741 long delayMilliseconds) { 5742 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5743 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5744 } 5745 5746 public void dispatchInvalidateOnAnimation(View view) { 5747 mInvalidateOnAnimationRunnable.addView(view); 5748 } 5749 5750 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5751 mInvalidateOnAnimationRunnable.addViewRect(info); 5752 } 5753 5754 public void enqueueDisplayList(DisplayList displayList) { 5755 mDisplayLists.add(displayList); 5756 } 5757 5758 public void cancelInvalidate(View view) { 5759 mHandler.removeMessages(MSG_INVALIDATE, view); 5760 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5761 // them to the pool 5762 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5763 mInvalidateOnAnimationRunnable.removeView(view); 5764 } 5765 5766 public void dispatchInputEvent(InputEvent event) { 5767 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, event); 5768 msg.setAsynchronous(true); 5769 mHandler.sendMessage(msg); 5770 } 5771 5772 public void dispatchKeyFromIme(KeyEvent event) { 5773 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5774 msg.setAsynchronous(true); 5775 mHandler.sendMessage(msg); 5776 } 5777 5778 public void dispatchUnhandledKey(KeyEvent event) { 5779 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5780 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5781 final int keyCode = event.getKeyCode(); 5782 final int metaState = event.getMetaState(); 5783 5784 // Check for fallback actions specified by the key character map. 5785 KeyCharacterMap.FallbackAction fallbackAction = 5786 kcm.getFallbackAction(keyCode, metaState); 5787 if (fallbackAction != null) { 5788 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5789 KeyEvent fallbackEvent = KeyEvent.obtain( 5790 event.getDownTime(), event.getEventTime(), 5791 event.getAction(), fallbackAction.keyCode, 5792 event.getRepeatCount(), fallbackAction.metaState, 5793 event.getDeviceId(), event.getScanCode(), 5794 flags, event.getSource(), null); 5795 fallbackAction.recycle(); 5796 5797 dispatchInputEvent(fallbackEvent); 5798 } 5799 } 5800 } 5801 5802 public void dispatchAppVisibility(boolean visible) { 5803 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5804 msg.arg1 = visible ? 1 : 0; 5805 mHandler.sendMessage(msg); 5806 } 5807 5808 public void dispatchScreenStateChange(boolean on) { 5809 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5810 msg.arg1 = on ? 1 : 0; 5811 mHandler.sendMessage(msg); 5812 } 5813 5814 public void dispatchGetNewSurface() { 5815 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5816 mHandler.sendMessage(msg); 5817 } 5818 5819 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5820 Message msg = Message.obtain(); 5821 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5822 msg.arg1 = hasFocus ? 1 : 0; 5823 msg.arg2 = inTouchMode ? 1 : 0; 5824 mHandler.sendMessage(msg); 5825 } 5826 5827 public void dispatchCloseSystemDialogs(String reason) { 5828 Message msg = Message.obtain(); 5829 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5830 msg.obj = reason; 5831 mHandler.sendMessage(msg); 5832 } 5833 5834 public void dispatchDragEvent(DragEvent event) { 5835 final int what; 5836 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5837 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5838 mHandler.removeMessages(what); 5839 } else { 5840 what = MSG_DISPATCH_DRAG_EVENT; 5841 } 5842 Message msg = mHandler.obtainMessage(what, event); 5843 mHandler.sendMessage(msg); 5844 } 5845 5846 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5847 int localValue, int localChanges) { 5848 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5849 args.seq = seq; 5850 args.globalVisibility = globalVisibility; 5851 args.localValue = localValue; 5852 args.localChanges = localChanges; 5853 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5854 } 5855 5856 public void dispatchDoneAnimating() { 5857 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5858 } 5859 5860 public void dispatchCheckFocus() { 5861 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5862 // This will result in a call to checkFocus() below. 5863 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5864 } 5865 } 5866 5867 /** 5868 * Post a callback to send a 5869 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5870 * This event is send at most once every 5871 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5872 */ 5873 private void postSendWindowContentChangedCallback(View source, int changeType) { 5874 if (mSendWindowContentChangedAccessibilityEvent == null) { 5875 mSendWindowContentChangedAccessibilityEvent = 5876 new SendWindowContentChangedAccessibilityEvent(); 5877 } 5878 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 5879 } 5880 5881 /** 5882 * Remove a posted callback to send a 5883 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5884 */ 5885 private void removeSendWindowContentChangedCallback() { 5886 if (mSendWindowContentChangedAccessibilityEvent != null) { 5887 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5888 } 5889 } 5890 5891 @Override 5892 public boolean showContextMenuForChild(View originalView) { 5893 return false; 5894 } 5895 5896 @Override 5897 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5898 return null; 5899 } 5900 5901 @Override 5902 public void createContextMenu(ContextMenu menu) { 5903 } 5904 5905 @Override 5906 public void childDrawableStateChanged(View child) { 5907 } 5908 5909 @Override 5910 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5911 if (mView == null) { 5912 return false; 5913 } 5914 // Intercept accessibility focus events fired by virtual nodes to keep 5915 // track of accessibility focus position in such nodes. 5916 final int eventType = event.getEventType(); 5917 switch (eventType) { 5918 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5919 final long sourceNodeId = event.getSourceNodeId(); 5920 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5921 sourceNodeId); 5922 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5923 if (source != null) { 5924 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5925 if (provider != null) { 5926 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5927 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5928 setAccessibilityFocus(source, node); 5929 } 5930 } 5931 } break; 5932 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5933 final long sourceNodeId = event.getSourceNodeId(); 5934 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5935 sourceNodeId); 5936 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5937 if (source != null) { 5938 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5939 if (provider != null) { 5940 setAccessibilityFocus(null, null); 5941 } 5942 } 5943 } break; 5944 } 5945 mAccessibilityManager.sendAccessibilityEvent(event); 5946 return true; 5947 } 5948 5949 @Override 5950 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 5951 postSendWindowContentChangedCallback(source, changeType); 5952 } 5953 5954 @Override 5955 public boolean canResolveLayoutDirection() { 5956 return true; 5957 } 5958 5959 @Override 5960 public boolean isLayoutDirectionResolved() { 5961 return true; 5962 } 5963 5964 @Override 5965 public int getLayoutDirection() { 5966 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5967 } 5968 5969 @Override 5970 public boolean canResolveTextDirection() { 5971 return true; 5972 } 5973 5974 @Override 5975 public boolean isTextDirectionResolved() { 5976 return true; 5977 } 5978 5979 @Override 5980 public int getTextDirection() { 5981 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5982 } 5983 5984 @Override 5985 public boolean canResolveTextAlignment() { 5986 return true; 5987 } 5988 5989 @Override 5990 public boolean isTextAlignmentResolved() { 5991 return true; 5992 } 5993 5994 @Override 5995 public int getTextAlignment() { 5996 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5997 } 5998 5999 private View getCommonPredecessor(View first, View second) { 6000 if (mAttachInfo != null) { 6001 if (mTempHashSet == null) { 6002 mTempHashSet = new HashSet<View>(); 6003 } 6004 HashSet<View> seen = mTempHashSet; 6005 seen.clear(); 6006 View firstCurrent = first; 6007 while (firstCurrent != null) { 6008 seen.add(firstCurrent); 6009 ViewParent firstCurrentParent = firstCurrent.mParent; 6010 if (firstCurrentParent instanceof View) { 6011 firstCurrent = (View) firstCurrentParent; 6012 } else { 6013 firstCurrent = null; 6014 } 6015 } 6016 View secondCurrent = second; 6017 while (secondCurrent != null) { 6018 if (seen.contains(secondCurrent)) { 6019 seen.clear(); 6020 return secondCurrent; 6021 } 6022 ViewParent secondCurrentParent = secondCurrent.mParent; 6023 if (secondCurrentParent instanceof View) { 6024 secondCurrent = (View) secondCurrentParent; 6025 } else { 6026 secondCurrent = null; 6027 } 6028 } 6029 seen.clear(); 6030 } 6031 return null; 6032 } 6033 6034 void checkThread() { 6035 if (mThread != Thread.currentThread()) { 6036 throw new CalledFromWrongThreadException( 6037 "Only the original thread that created a view hierarchy can touch its views."); 6038 } 6039 } 6040 6041 @Override 6042 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6043 // ViewAncestor never intercepts touch event, so this can be a no-op 6044 } 6045 6046 @Override 6047 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6048 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6049 if (rectangle != null) { 6050 mTempRect.set(rectangle); 6051 mTempRect.offset(0, -mCurScrollY); 6052 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6053 try { 6054 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 6055 } catch (RemoteException re) { 6056 /* ignore */ 6057 } 6058 } 6059 return scrolled; 6060 } 6061 6062 @Override 6063 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6064 // Do nothing. 6065 } 6066 6067 void changeCanvasOpacity(boolean opaque) { 6068 // TODO(romainguy): recreate Canvas (software or hardware) to reflect the opacity change. 6069 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6070 } 6071 6072 class TakenSurfaceHolder extends BaseSurfaceHolder { 6073 @Override 6074 public boolean onAllowLockCanvas() { 6075 return mDrawingAllowed; 6076 } 6077 6078 @Override 6079 public void onRelayoutContainer() { 6080 // Not currently interesting -- from changing between fixed and layout size. 6081 } 6082 6083 @Override 6084 public void setFormat(int format) { 6085 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6086 } 6087 6088 @Override 6089 public void setType(int type) { 6090 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6091 } 6092 6093 @Override 6094 public void onUpdateSurface() { 6095 // We take care of format and type changes on our own. 6096 throw new IllegalStateException("Shouldn't be here"); 6097 } 6098 6099 @Override 6100 public boolean isCreating() { 6101 return mIsCreating; 6102 } 6103 6104 @Override 6105 public void setFixedSize(int width, int height) { 6106 throw new UnsupportedOperationException( 6107 "Currently only support sizing from layout"); 6108 } 6109 6110 @Override 6111 public void setKeepScreenOn(boolean screenOn) { 6112 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6113 } 6114 } 6115 6116 static class W extends IWindow.Stub { 6117 private final WeakReference<ViewRootImpl> mViewAncestor; 6118 private final IWindowSession mWindowSession; 6119 6120 W(ViewRootImpl viewAncestor) { 6121 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6122 mWindowSession = viewAncestor.mWindowSession; 6123 } 6124 6125 @Override 6126 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6127 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6128 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6129 if (viewAncestor != null) { 6130 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6131 visibleInsets, reportDraw, newConfig); 6132 } 6133 } 6134 6135 @Override 6136 public void moved(int newX, int newY) { 6137 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6138 if (viewAncestor != null) { 6139 viewAncestor.dispatchMoved(newX, newY); 6140 } 6141 } 6142 6143 @Override 6144 public void dispatchAppVisibility(boolean visible) { 6145 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6146 if (viewAncestor != null) { 6147 viewAncestor.dispatchAppVisibility(visible); 6148 } 6149 } 6150 6151 @Override 6152 public void dispatchScreenState(boolean on) { 6153 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6154 if (viewAncestor != null) { 6155 viewAncestor.dispatchScreenStateChange(on); 6156 } 6157 } 6158 6159 @Override 6160 public void dispatchGetNewSurface() { 6161 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6162 if (viewAncestor != null) { 6163 viewAncestor.dispatchGetNewSurface(); 6164 } 6165 } 6166 6167 @Override 6168 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6169 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6170 if (viewAncestor != null) { 6171 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6172 } 6173 } 6174 6175 private static int checkCallingPermission(String permission) { 6176 try { 6177 return ActivityManagerNative.getDefault().checkPermission( 6178 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6179 } catch (RemoteException e) { 6180 return PackageManager.PERMISSION_DENIED; 6181 } 6182 } 6183 6184 @Override 6185 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6186 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6187 if (viewAncestor != null) { 6188 final View view = viewAncestor.mView; 6189 if (view != null) { 6190 if (checkCallingPermission(Manifest.permission.DUMP) != 6191 PackageManager.PERMISSION_GRANTED) { 6192 throw new SecurityException("Insufficient permissions to invoke" 6193 + " executeCommand() from pid=" + Binder.getCallingPid() 6194 + ", uid=" + Binder.getCallingUid()); 6195 } 6196 6197 OutputStream clientStream = null; 6198 try { 6199 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6200 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6201 } catch (IOException e) { 6202 e.printStackTrace(); 6203 } finally { 6204 if (clientStream != null) { 6205 try { 6206 clientStream.close(); 6207 } catch (IOException e) { 6208 e.printStackTrace(); 6209 } 6210 } 6211 } 6212 } 6213 } 6214 } 6215 6216 @Override 6217 public void closeSystemDialogs(String reason) { 6218 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6219 if (viewAncestor != null) { 6220 viewAncestor.dispatchCloseSystemDialogs(reason); 6221 } 6222 } 6223 6224 @Override 6225 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6226 boolean sync) { 6227 if (sync) { 6228 try { 6229 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6230 } catch (RemoteException e) { 6231 } 6232 } 6233 } 6234 6235 @Override 6236 public void dispatchWallpaperCommand(String action, int x, int y, 6237 int z, Bundle extras, boolean sync) { 6238 if (sync) { 6239 try { 6240 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6241 } catch (RemoteException e) { 6242 } 6243 } 6244 } 6245 6246 /* Drag/drop */ 6247 @Override 6248 public void dispatchDragEvent(DragEvent event) { 6249 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6250 if (viewAncestor != null) { 6251 viewAncestor.dispatchDragEvent(event); 6252 } 6253 } 6254 6255 @Override 6256 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6257 int localValue, int localChanges) { 6258 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6259 if (viewAncestor != null) { 6260 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6261 localValue, localChanges); 6262 } 6263 } 6264 6265 @Override 6266 public void doneAnimating() { 6267 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6268 if (viewAncestor != null) { 6269 viewAncestor.dispatchDoneAnimating(); 6270 } 6271 } 6272 } 6273 6274 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6275 public CalledFromWrongThreadException(String msg) { 6276 super(msg); 6277 } 6278 } 6279 6280 private final SurfaceHolder mHolder = new SurfaceHolder() { 6281 // we only need a SurfaceHolder for opengl. it would be nice 6282 // to implement everything else though, especially the callback 6283 // support (opengl doesn't make use of it right now, but eventually 6284 // will). 6285 @Override 6286 public Surface getSurface() { 6287 return mSurface; 6288 } 6289 6290 @Override 6291 public boolean isCreating() { 6292 return false; 6293 } 6294 6295 @Override 6296 public void addCallback(Callback callback) { 6297 } 6298 6299 @Override 6300 public void removeCallback(Callback callback) { 6301 } 6302 6303 @Override 6304 public void setFixedSize(int width, int height) { 6305 } 6306 6307 @Override 6308 public void setSizeFromLayout() { 6309 } 6310 6311 @Override 6312 public void setFormat(int format) { 6313 } 6314 6315 @Override 6316 public void setType(int type) { 6317 } 6318 6319 @Override 6320 public void setKeepScreenOn(boolean screenOn) { 6321 } 6322 6323 @Override 6324 public Canvas lockCanvas() { 6325 return null; 6326 } 6327 6328 @Override 6329 public Canvas lockCanvas(Rect dirty) { 6330 return null; 6331 } 6332 6333 @Override 6334 public void unlockCanvasAndPost(Canvas canvas) { 6335 } 6336 @Override 6337 public Rect getSurfaceFrame() { 6338 return null; 6339 } 6340 }; 6341 6342 static RunQueue getRunQueue() { 6343 RunQueue rq = sRunQueues.get(); 6344 if (rq != null) { 6345 return rq; 6346 } 6347 rq = new RunQueue(); 6348 sRunQueues.set(rq); 6349 return rq; 6350 } 6351 6352 /** 6353 * The run queue is used to enqueue pending work from Views when no Handler is 6354 * attached. The work is executed during the next call to performTraversals on 6355 * the thread. 6356 * @hide 6357 */ 6358 static final class RunQueue { 6359 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6360 6361 void post(Runnable action) { 6362 postDelayed(action, 0); 6363 } 6364 6365 void postDelayed(Runnable action, long delayMillis) { 6366 HandlerAction handlerAction = new HandlerAction(); 6367 handlerAction.action = action; 6368 handlerAction.delay = delayMillis; 6369 6370 synchronized (mActions) { 6371 mActions.add(handlerAction); 6372 } 6373 } 6374 6375 void removeCallbacks(Runnable action) { 6376 final HandlerAction handlerAction = new HandlerAction(); 6377 handlerAction.action = action; 6378 6379 synchronized (mActions) { 6380 final ArrayList<HandlerAction> actions = mActions; 6381 6382 while (actions.remove(handlerAction)) { 6383 // Keep going 6384 } 6385 } 6386 } 6387 6388 void executeActions(Handler handler) { 6389 synchronized (mActions) { 6390 final ArrayList<HandlerAction> actions = mActions; 6391 final int count = actions.size(); 6392 6393 for (int i = 0; i < count; i++) { 6394 final HandlerAction handlerAction = actions.get(i); 6395 handler.postDelayed(handlerAction.action, handlerAction.delay); 6396 } 6397 6398 actions.clear(); 6399 } 6400 } 6401 6402 private static class HandlerAction { 6403 Runnable action; 6404 long delay; 6405 6406 @Override 6407 public boolean equals(Object o) { 6408 if (this == o) return true; 6409 if (o == null || getClass() != o.getClass()) return false; 6410 6411 HandlerAction that = (HandlerAction) o; 6412 return !(action != null ? !action.equals(that.action) : that.action != null); 6413 6414 } 6415 6416 @Override 6417 public int hashCode() { 6418 int result = action != null ? action.hashCode() : 0; 6419 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6420 return result; 6421 } 6422 } 6423 } 6424 6425 /** 6426 * Class for managing the accessibility interaction connection 6427 * based on the global accessibility state. 6428 */ 6429 final class AccessibilityInteractionConnectionManager 6430 implements AccessibilityStateChangeListener { 6431 @Override 6432 public void onAccessibilityStateChanged(boolean enabled) { 6433 if (enabled) { 6434 ensureConnection(); 6435 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6436 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6437 View focusedView = mView.findFocus(); 6438 if (focusedView != null && focusedView != mView) { 6439 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6440 } 6441 } 6442 } else { 6443 ensureNoConnection(); 6444 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6445 } 6446 } 6447 6448 public void ensureConnection() { 6449 if (mAttachInfo != null) { 6450 final boolean registered = 6451 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6452 if (!registered) { 6453 mAttachInfo.mAccessibilityWindowId = 6454 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6455 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6456 } 6457 } 6458 } 6459 6460 public void ensureNoConnection() { 6461 final boolean registered = 6462 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6463 if (registered) { 6464 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6465 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6466 } 6467 } 6468 } 6469 6470 /** 6471 * This class is an interface this ViewAncestor provides to the 6472 * AccessibilityManagerService to the latter can interact with 6473 * the view hierarchy in this ViewAncestor. 6474 */ 6475 static final class AccessibilityInteractionConnection 6476 extends IAccessibilityInteractionConnection.Stub { 6477 private final WeakReference<ViewRootImpl> mViewRootImpl; 6478 6479 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6480 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6481 } 6482 6483 @Override 6484 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6485 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6486 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6487 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6488 if (viewRootImpl != null && viewRootImpl.mView != null) { 6489 viewRootImpl.getAccessibilityInteractionController() 6490 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6491 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6492 spec); 6493 } else { 6494 // We cannot make the call and notify the caller so it does not wait. 6495 try { 6496 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6497 } catch (RemoteException re) { 6498 /* best effort - ignore */ 6499 } 6500 } 6501 } 6502 6503 @Override 6504 public void performAccessibilityAction(long accessibilityNodeId, int action, 6505 Bundle arguments, int interactionId, 6506 IAccessibilityInteractionConnectionCallback callback, int flags, 6507 int interogatingPid, long interrogatingTid) { 6508 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6509 if (viewRootImpl != null && viewRootImpl.mView != null) { 6510 viewRootImpl.getAccessibilityInteractionController() 6511 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6512 interactionId, callback, flags, interogatingPid, interrogatingTid); 6513 } else { 6514 // We cannot make the call and notify the caller so it does not wait. 6515 try { 6516 callback.setPerformAccessibilityActionResult(false, interactionId); 6517 } catch (RemoteException re) { 6518 /* best effort - ignore */ 6519 } 6520 } 6521 } 6522 6523 @Override 6524 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6525 String viewId, int interactionId, 6526 IAccessibilityInteractionConnectionCallback callback, int flags, 6527 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6528 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6529 if (viewRootImpl != null && viewRootImpl.mView != null) { 6530 viewRootImpl.getAccessibilityInteractionController() 6531 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6532 viewId, interactionId, callback, flags, interrogatingPid, 6533 interrogatingTid, spec); 6534 } else { 6535 // We cannot make the call and notify the caller so it does not wait. 6536 try { 6537 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6538 } catch (RemoteException re) { 6539 /* best effort - ignore */ 6540 } 6541 } 6542 } 6543 6544 @Override 6545 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6546 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6547 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6548 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6549 if (viewRootImpl != null && viewRootImpl.mView != null) { 6550 viewRootImpl.getAccessibilityInteractionController() 6551 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6552 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6553 spec); 6554 } else { 6555 // We cannot make the call and notify the caller so it does not wait. 6556 try { 6557 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6558 } catch (RemoteException re) { 6559 /* best effort - ignore */ 6560 } 6561 } 6562 } 6563 6564 @Override 6565 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6566 IAccessibilityInteractionConnectionCallback callback, int flags, 6567 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6568 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6569 if (viewRootImpl != null && viewRootImpl.mView != null) { 6570 viewRootImpl.getAccessibilityInteractionController() 6571 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6572 flags, interrogatingPid, interrogatingTid, spec); 6573 } else { 6574 // We cannot make the call and notify the caller so it does not wait. 6575 try { 6576 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6577 } catch (RemoteException re) { 6578 /* best effort - ignore */ 6579 } 6580 } 6581 } 6582 6583 @Override 6584 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6585 IAccessibilityInteractionConnectionCallback callback, int flags, 6586 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6587 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6588 if (viewRootImpl != null && viewRootImpl.mView != null) { 6589 viewRootImpl.getAccessibilityInteractionController() 6590 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6591 callback, flags, interrogatingPid, interrogatingTid, spec); 6592 } else { 6593 // We cannot make the call and notify the caller so it does not wait. 6594 try { 6595 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6596 } catch (RemoteException re) { 6597 /* best effort - ignore */ 6598 } 6599 } 6600 } 6601 } 6602 6603 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6604 private int mChangeTypes = 0; 6605 6606 public View mSource; 6607 public long mLastEventTimeMillis; 6608 6609 @Override 6610 public void run() { 6611 // The accessibility may be turned off while we were waiting so check again. 6612 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6613 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6614 AccessibilityEvent event = AccessibilityEvent.obtain(); 6615 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6616 event.setContentChangeTypes(mChangeTypes); 6617 mSource.sendAccessibilityEventUnchecked(event); 6618 } else { 6619 mLastEventTimeMillis = 0; 6620 } 6621 // In any case reset to initial state. 6622 mSource.resetSubtreeAccessibilityStateChanged(); 6623 mSource = null; 6624 mChangeTypes = 0; 6625 } 6626 6627 public void runOrPost(View source, int changeType) { 6628 if (mSource != null) { 6629 // If there is no common predecessor, then mSource points to 6630 // a removed view, hence in this case always prefer the source. 6631 View predecessor = getCommonPredecessor(mSource, source); 6632 mSource = (predecessor != null) ? predecessor : source; 6633 mChangeTypes |= changeType; 6634 return; 6635 } 6636 mSource = source; 6637 mChangeTypes = changeType; 6638 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6639 final long minEventIntevalMillis = 6640 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6641 if (timeSinceLastMillis >= minEventIntevalMillis) { 6642 mSource.removeCallbacks(this); 6643 run(); 6644 } else { 6645 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6646 } 6647 } 6648 } 6649} 6650