ViewRootImpl.java revision 9d343c26063b8981294d85e0a42819b628c022d7
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.IOException; 81import java.io.OutputStream; 82import java.lang.ref.WeakReference; 83import java.util.ArrayList; 84import java.util.HashSet; 85 86/** 87 * The top of a view hierarchy, implementing the needed protocol between View 88 * and the WindowManager. This is for the most part an internal implementation 89 * detail of {@link WindowManagerGlobal}. 90 * 91 * {@hide} 92 */ 93@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 94public final class ViewRootImpl implements ViewParent, 95 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 96 private static final String TAG = "ViewRootImpl"; 97 private static final boolean DBG = false; 98 private static final boolean LOCAL_LOGV = false; 99 /** @noinspection PointlessBooleanExpression*/ 100 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 101 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 102 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 103 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 104 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 105 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 106 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 107 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 108 private static final boolean DEBUG_FPS = false; 109 private static final boolean DEBUG_INPUT_PROCESSING = false || LOCAL_LOGV; 110 111 /** 112 * Set this system property to true to force the view hierarchy to render 113 * at 60 Hz. This can be used to measure the potential framerate. 114 */ 115 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 116 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 117 118 /** 119 * Maximum time we allow the user to roll the trackball enough to generate 120 * a key event, before resetting the counters. 121 */ 122 static final int MAX_TRACKBALL_DELAY = 250; 123 124 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 125 126 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 127 static boolean sFirstDrawComplete = false; 128 129 static final ArrayList<ComponentCallbacks> sConfigCallbacks 130 = new ArrayList<ComponentCallbacks>(); 131 132 final Context mContext; 133 final IWindowSession mWindowSession; 134 final Display mDisplay; 135 final String mBasePackageName; 136 137 final int[] mTmpLocation = new int[2]; 138 139 final TypedValue mTmpValue = new TypedValue(); 140 141 final Thread mThread; 142 143 final WindowLeaked mLocation; 144 145 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 146 147 final W mWindow; 148 149 final int mTargetSdkVersion; 150 151 int mSeq; 152 153 View mView; 154 155 View mAccessibilityFocusedHost; 156 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 157 158 int mViewVisibility; 159 boolean mAppVisible = true; 160 int mOrigWindowType = -1; 161 162 // Set to true if the owner of this window is in the stopped state, 163 // so the window should no longer be active. 164 boolean mStopped = false; 165 166 boolean mLastInCompatMode = false; 167 168 SurfaceHolder.Callback2 mSurfaceHolderCallback; 169 BaseSurfaceHolder mSurfaceHolder; 170 boolean mIsCreating; 171 boolean mDrawingAllowed; 172 173 final Region mTransparentRegion; 174 final Region mPreviousTransparentRegion; 175 176 int mWidth; 177 int mHeight; 178 Rect mDirty; 179 final Rect mCurrentDirty = new Rect(); 180 boolean mIsAnimating; 181 182 CompatibilityInfo.Translator mTranslator; 183 184 final View.AttachInfo mAttachInfo; 185 InputChannel mInputChannel; 186 InputQueue.Callback mInputQueueCallback; 187 InputQueue mInputQueue; 188 FallbackEventHandler mFallbackEventHandler; 189 Choreographer mChoreographer; 190 191 final Rect mTempRect; // used in the transaction to not thrash the heap. 192 final Rect mVisRect; // used to retrieve visible rect of focused view. 193 194 boolean mTraversalScheduled; 195 int mTraversalBarrier; 196 boolean mWillDrawSoon; 197 /** Set to true while in performTraversals for detecting when die(true) is called from internal 198 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 199 boolean mIsInTraversal; 200 boolean mFitSystemWindowsRequested; 201 boolean mLayoutRequested; 202 boolean mFirst; 203 boolean mReportNextDraw; 204 boolean mFullRedrawNeeded; 205 boolean mNewSurfaceNeeded; 206 boolean mHasHadWindowFocus; 207 boolean mLastWasImTarget; 208 boolean mWindowsAnimating; 209 boolean mDrawDuringWindowsAnimating; 210 boolean mIsDrawing; 211 int mLastSystemUiVisibility; 212 int mClientWindowLayoutFlags; 213 boolean mLastOverscanRequested; 214 215 // Pool of queued input events. 216 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 217 private QueuedInputEvent mQueuedInputEventPool; 218 private int mQueuedInputEventPoolSize; 219 220 /* Input event queue. 221 * Pending input events are input events waiting to be delivered to the input stages 222 * and handled by the application. 223 */ 224 QueuedInputEvent mPendingInputEventHead; 225 QueuedInputEvent mPendingInputEventTail; 226 int mPendingInputEventCount; 227 boolean mProcessInputEventsScheduled; 228 String mPendingInputEventQueueLengthCounterName = "pq"; 229 230 InputStage mFirstInputStage; 231 InputStage mFirstPostImeInputStage; 232 233 boolean mFlipControllerFallbackKeys; 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 mFlipControllerFallbackKeys = 372 context.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 373 374 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 375 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 376 loadSystemProperties(); 377 } 378 379 public static void addFirstDrawHandler(Runnable callback) { 380 synchronized (sFirstDrawHandlers) { 381 if (!sFirstDrawComplete) { 382 sFirstDrawHandlers.add(callback); 383 } 384 } 385 } 386 387 public static void addConfigCallback(ComponentCallbacks callback) { 388 synchronized (sConfigCallbacks) { 389 sConfigCallbacks.add(callback); 390 } 391 } 392 393 // FIXME for perf testing only 394 private boolean mProfile = false; 395 396 /** 397 * Call this to profile the next traversal call. 398 * FIXME for perf testing only. Remove eventually 399 */ 400 public void profile() { 401 mProfile = true; 402 } 403 404 /** 405 * Indicates whether we are in touch mode. Calling this method triggers an IPC 406 * call and should be avoided whenever possible. 407 * 408 * @return True, if the device is in touch mode, false otherwise. 409 * 410 * @hide 411 */ 412 static boolean isInTouchMode() { 413 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 414 if (windowSession != null) { 415 try { 416 return windowSession.getInTouchMode(); 417 } catch (RemoteException e) { 418 } 419 } 420 return false; 421 } 422 423 /** 424 * We have one child 425 */ 426 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 427 synchronized (this) { 428 if (mView == null) { 429 mView = view; 430 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 431 mFallbackEventHandler.setView(view); 432 mWindowAttributes.copyFrom(attrs); 433 if (mWindowAttributes.packageName == null) { 434 mWindowAttributes.packageName = mBasePackageName; 435 } 436 attrs = mWindowAttributes; 437 // Keep track of the actual window flags supplied by the client. 438 mClientWindowLayoutFlags = attrs.flags; 439 440 setAccessibilityFocus(null, null); 441 442 if (view instanceof RootViewSurfaceTaker) { 443 mSurfaceHolderCallback = 444 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 445 if (mSurfaceHolderCallback != null) { 446 mSurfaceHolder = new TakenSurfaceHolder(); 447 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 448 } 449 } 450 451 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 452 mTranslator = compatibilityInfo.getTranslator(); 453 mDisplayAdjustments.setActivityToken(attrs.token); 454 455 // If the application owns the surface, don't enable hardware acceleration 456 if (mSurfaceHolder == null) { 457 enableHardwareAcceleration(attrs); 458 } 459 460 boolean restore = false; 461 if (mTranslator != null) { 462 mSurface.setCompatibilityTranslator(mTranslator); 463 restore = true; 464 attrs.backup(); 465 mTranslator.translateWindowLayout(attrs); 466 } 467 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 468 469 if (!compatibilityInfo.supportsScreen()) { 470 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 471 mLastInCompatMode = true; 472 } 473 474 mSoftInputMode = attrs.softInputMode; 475 mWindowAttributesChanged = true; 476 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 477 mAttachInfo.mRootView = view; 478 mAttachInfo.mScalingRequired = mTranslator != null; 479 mAttachInfo.mApplicationScale = 480 mTranslator == null ? 1.0f : mTranslator.applicationScale; 481 if (panelParentView != null) { 482 mAttachInfo.mPanelParentWindowToken 483 = panelParentView.getApplicationWindowToken(); 484 } 485 mAdded = true; 486 int res; /* = WindowManagerImpl.ADD_OKAY; */ 487 488 // Schedule the first layout -before- adding to the window 489 // manager, to make sure we do the relayout before receiving 490 // any other events from the system. 491 requestLayout(); 492 if ((mWindowAttributes.inputFeatures 493 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 494 mInputChannel = new InputChannel(); 495 } 496 try { 497 mOrigWindowType = mWindowAttributes.type; 498 mAttachInfo.mRecomputeGlobalAttributes = true; 499 collectViewAttributes(); 500 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 501 getHostVisibility(), mDisplay.getDisplayId(), 502 mAttachInfo.mContentInsets, mInputChannel); 503 } catch (RemoteException e) { 504 mAdded = false; 505 mView = null; 506 mAttachInfo.mRootView = null; 507 mInputChannel = null; 508 mFallbackEventHandler.setView(null); 509 unscheduleTraversals(); 510 setAccessibilityFocus(null, null); 511 throw new RuntimeException("Adding window failed", e); 512 } finally { 513 if (restore) { 514 attrs.restore(); 515 } 516 } 517 518 if (mTranslator != null) { 519 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 520 } 521 mPendingOverscanInsets.set(0, 0, 0, 0); 522 mPendingContentInsets.set(mAttachInfo.mContentInsets); 523 mPendingVisibleInsets.set(0, 0, 0, 0); 524 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 525 if (res < WindowManagerGlobal.ADD_OKAY) { 526 mAttachInfo.mRootView = null; 527 mAdded = false; 528 mFallbackEventHandler.setView(null); 529 unscheduleTraversals(); 530 setAccessibilityFocus(null, null); 531 switch (res) { 532 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 533 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 534 throw new WindowManager.BadTokenException( 535 "Unable to add window -- token " + attrs.token 536 + " is not valid; is your activity running?"); 537 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 538 throw new WindowManager.BadTokenException( 539 "Unable to add window -- token " + attrs.token 540 + " is not for an application"); 541 case WindowManagerGlobal.ADD_APP_EXITING: 542 throw new WindowManager.BadTokenException( 543 "Unable to add window -- app for token " + attrs.token 544 + " is exiting"); 545 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 546 throw new WindowManager.BadTokenException( 547 "Unable to add window -- window " + mWindow 548 + " has already been added"); 549 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 550 // Silently ignore -- we would have just removed it 551 // right away, anyway. 552 return; 553 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 554 throw new WindowManager.BadTokenException( 555 "Unable to add window " + mWindow + 556 " -- another window of this type already exists"); 557 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 558 throw new WindowManager.BadTokenException( 559 "Unable to add window " + mWindow + 560 " -- permission denied for this window type"); 561 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 562 throw new WindowManager.InvalidDisplayException( 563 "Unable to add window " + mWindow + 564 " -- the specified display can not be found"); 565 } 566 throw new RuntimeException( 567 "Unable to add window -- unknown error code " + res); 568 } 569 570 if (view instanceof RootViewSurfaceTaker) { 571 mInputQueueCallback = 572 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 573 } 574 if (mInputChannel != null) { 575 if (mInputQueueCallback != null) { 576 mInputQueue = new InputQueue(); 577 mInputQueueCallback.onInputQueueCreated(mInputQueue); 578 } 579 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 580 Looper.myLooper()); 581 } 582 583 view.assignParent(this); 584 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 585 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 586 587 if (mAccessibilityManager.isEnabled()) { 588 mAccessibilityInteractionConnectionManager.ensureConnection(); 589 } 590 591 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 592 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 593 } 594 595 // Set up the input pipeline. 596 CharSequence counterSuffix = attrs.getTitle(); 597 InputStage syntheticInputStage = new SyntheticInputStage(); 598 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticInputStage); 599 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 600 "aq:native-post-ime:" + counterSuffix); 601 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 602 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 603 "aq:ime:" + counterSuffix); 604 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 605 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 606 "aq:native-pre-ime:" + counterSuffix); 607 608 mFirstInputStage = nativePreImeStage; 609 mFirstPostImeInputStage = earlyPostImeStage; 610 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 611 } 612 } 613 } 614 615 /** Whether the window is in local focus mode or not */ 616 private boolean isInLocalFocusMode() { 617 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 618 } 619 620 void destroyHardwareResources() { 621 invalidateDisplayLists(); 622 if (mAttachInfo.mHardwareRenderer != null) { 623 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 624 mAttachInfo.mHardwareRenderer.destroy(false); 625 } 626 } 627 628 void destroyHardwareLayers() { 629 if (mThread != Thread.currentThread()) { 630 if (mAttachInfo.mHardwareRenderer != null && 631 mAttachInfo.mHardwareRenderer.isEnabled()) { 632 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 633 } 634 } else { 635 invalidateDisplayLists(); 636 if (mAttachInfo.mHardwareRenderer != null && 637 mAttachInfo.mHardwareRenderer.isEnabled()) { 638 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 639 } 640 } 641 } 642 643 void pushHardwareLayerUpdate(HardwareLayer layer) { 644 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 645 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 646 } 647 } 648 649 void flushHardwareLayerUpdates() { 650 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled() && 651 mAttachInfo.mHardwareRenderer.validate()) { 652 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 653 } 654 } 655 656 void dispatchFlushHardwareLayerUpdates() { 657 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 658 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 659 } 660 661 public boolean attachFunctor(int functor) { 662 //noinspection SimplifiableIfStatement 663 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 664 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 665 } 666 return false; 667 } 668 669 public void detachFunctor(int functor) { 670 if (mAttachInfo.mHardwareRenderer != null) { 671 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 672 } 673 } 674 675 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 676 mAttachInfo.mHardwareAccelerated = false; 677 mAttachInfo.mHardwareAccelerationRequested = false; 678 679 // Don't enable hardware acceleration when the application is in compatibility mode 680 if (mTranslator != null) return; 681 682 // Try to enable hardware acceleration if requested 683 final boolean hardwareAccelerated = 684 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 685 686 if (hardwareAccelerated) { 687 if (!HardwareRenderer.isAvailable()) { 688 return; 689 } 690 691 // Persistent processes (including the system) should not do 692 // accelerated rendering on low-end devices. In that case, 693 // sRendererDisabled will be set. In addition, the system process 694 // itself should never do accelerated rendering. In that case, both 695 // sRendererDisabled and sSystemRendererDisabled are set. When 696 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 697 // can be used by code on the system process to escape that and enable 698 // HW accelerated drawing. (This is basically for the lock screen.) 699 700 final boolean fakeHwAccelerated = (attrs.privateFlags & 701 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 702 final boolean forceHwAccelerated = (attrs.privateFlags & 703 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 704 705 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 706 && forceHwAccelerated)) { 707 // Don't enable hardware acceleration when we're not on the main thread 708 if (!HardwareRenderer.sSystemRendererDisabled && 709 Looper.getMainLooper() != Looper.myLooper()) { 710 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 711 + "acceleration outside of the main thread, aborting"); 712 return; 713 } 714 715 if (mAttachInfo.mHardwareRenderer != null) { 716 mAttachInfo.mHardwareRenderer.destroy(true); 717 } 718 719 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 720 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 721 if (mAttachInfo.mHardwareRenderer != null) { 722 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 723 mAttachInfo.mHardwareAccelerated = 724 mAttachInfo.mHardwareAccelerationRequested = true; 725 } 726 } else if (fakeHwAccelerated) { 727 // The window had wanted to use hardware acceleration, but this 728 // is not allowed in its process. By setting this flag, it can 729 // still render as if it was accelerated. This is basically for 730 // the preview windows the window manager shows for launching 731 // applications, so they will look more like the app being launched. 732 mAttachInfo.mHardwareAccelerationRequested = true; 733 } 734 } 735 } 736 737 public View getView() { 738 return mView; 739 } 740 741 final WindowLeaked getLocation() { 742 return mLocation; 743 } 744 745 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 746 synchronized (this) { 747 int oldSoftInputMode = mWindowAttributes.softInputMode; 748 // Keep track of the actual window flags supplied by the client. 749 mClientWindowLayoutFlags = attrs.flags; 750 // preserve compatible window flag if exists. 751 int compatibleWindowFlag = mWindowAttributes.privateFlags 752 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 753 // transfer over system UI visibility values as they carry current state. 754 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 755 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 756 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 757 if ((mWindowAttributesChangesFlag 758 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 759 // Recompute system ui visibility. 760 mAttachInfo.mRecomputeGlobalAttributes = true; 761 } 762 if (mWindowAttributes.packageName == null) { 763 mWindowAttributes.packageName = mBasePackageName; 764 } 765 mWindowAttributes.privateFlags |= compatibleWindowFlag; 766 767 applyKeepScreenOnFlag(mWindowAttributes); 768 769 if (newView) { 770 mSoftInputMode = attrs.softInputMode; 771 requestLayout(); 772 } 773 // Don't lose the mode we last auto-computed. 774 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 775 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 776 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 777 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 778 | (oldSoftInputMode 779 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 780 } 781 mWindowAttributesChanged = true; 782 scheduleTraversals(); 783 } 784 } 785 786 void handleAppVisibility(boolean visible) { 787 if (mAppVisible != visible) { 788 mAppVisible = visible; 789 scheduleTraversals(); 790 } 791 } 792 793 void handleGetNewSurface() { 794 mNewSurfaceNeeded = true; 795 mFullRedrawNeeded = true; 796 scheduleTraversals(); 797 } 798 799 void handleScreenStateChange(boolean on) { 800 if (on != mAttachInfo.mScreenOn) { 801 mAttachInfo.mScreenOn = on; 802 if (mView != null) { 803 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 804 } 805 if (on) { 806 mFullRedrawNeeded = true; 807 scheduleTraversals(); 808 } 809 } 810 } 811 812 @Override 813 public void requestFitSystemWindows() { 814 checkThread(); 815 mFitSystemWindowsRequested = true; 816 scheduleTraversals(); 817 } 818 819 @Override 820 public void requestLayout() { 821 if (!mHandlingLayoutInLayoutRequest) { 822 checkThread(); 823 mLayoutRequested = true; 824 scheduleTraversals(); 825 } 826 } 827 828 @Override 829 public boolean isLayoutRequested() { 830 return mLayoutRequested; 831 } 832 833 void invalidate() { 834 mDirty.set(0, 0, mWidth, mHeight); 835 scheduleTraversals(); 836 } 837 838 void invalidateWorld(View view) { 839 view.invalidate(); 840 if (view instanceof ViewGroup) { 841 ViewGroup parent = (ViewGroup) view; 842 for (int i = 0; i < parent.getChildCount(); i++) { 843 invalidateWorld(parent.getChildAt(i)); 844 } 845 } 846 } 847 848 @Override 849 public void invalidateChild(View child, Rect dirty) { 850 invalidateChildInParent(null, dirty); 851 } 852 853 @Override 854 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 855 checkThread(); 856 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 857 858 if (dirty == null) { 859 invalidate(); 860 return null; 861 } else if (dirty.isEmpty() && !mIsAnimating) { 862 return null; 863 } 864 865 if (mCurScrollY != 0 || mTranslator != null) { 866 mTempRect.set(dirty); 867 dirty = mTempRect; 868 if (mCurScrollY != 0) { 869 dirty.offset(0, -mCurScrollY); 870 } 871 if (mTranslator != null) { 872 mTranslator.translateRectInAppWindowToScreen(dirty); 873 } 874 if (mAttachInfo.mScalingRequired) { 875 dirty.inset(-1, -1); 876 } 877 } 878 879 final Rect localDirty = mDirty; 880 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 881 mAttachInfo.mSetIgnoreDirtyState = true; 882 mAttachInfo.mIgnoreDirtyState = true; 883 } 884 885 // Add the new dirty rect to the current one 886 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 887 // Intersect with the bounds of the window to skip 888 // updates that lie outside of the visible region 889 final float appScale = mAttachInfo.mApplicationScale; 890 final boolean intersected = localDirty.intersect(0, 0, 891 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 892 if (!intersected) { 893 localDirty.setEmpty(); 894 } 895 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 896 scheduleTraversals(); 897 } 898 899 return null; 900 } 901 902 void setStopped(boolean stopped) { 903 if (mStopped != stopped) { 904 mStopped = stopped; 905 if (!stopped) { 906 scheduleTraversals(); 907 } 908 } 909 } 910 911 @Override 912 public ViewParent getParent() { 913 return null; 914 } 915 916 @Override 917 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 918 if (child != mView) { 919 throw new RuntimeException("child is not mine, honest!"); 920 } 921 // Note: don't apply scroll offset, because we want to know its 922 // visibility in the virtual canvas being given to the view hierarchy. 923 return r.intersect(0, 0, mWidth, mHeight); 924 } 925 926 @Override 927 public void bringChildToFront(View child) { 928 } 929 930 int getHostVisibility() { 931 return mAppVisible ? mView.getVisibility() : View.GONE; 932 } 933 934 void disposeResizeBuffer() { 935 if (mResizeBuffer != null && mAttachInfo.mHardwareRenderer != null) { 936 mAttachInfo.mHardwareRenderer.safelyRun(new Runnable() { 937 @Override 938 public void run() { 939 mResizeBuffer.destroy(); 940 mResizeBuffer = null; 941 } 942 }); 943 } 944 } 945 946 /** 947 * Add LayoutTransition to the list of transitions to be started in the next traversal. 948 * This list will be cleared after the transitions on the list are start()'ed. These 949 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 950 * happens during the layout phase of traversal, which we want to complete before any of the 951 * animations are started (because those animations may side-effect properties that layout 952 * depends upon, like the bounding rectangles of the affected views). So we add the transition 953 * to the list and it is started just prior to starting the drawing phase of traversal. 954 * 955 * @param transition The LayoutTransition to be started on the next traversal. 956 * 957 * @hide 958 */ 959 public void requestTransitionStart(LayoutTransition transition) { 960 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 961 if (mPendingTransitions == null) { 962 mPendingTransitions = new ArrayList<LayoutTransition>(); 963 } 964 mPendingTransitions.add(transition); 965 } 966 } 967 968 void scheduleTraversals() { 969 if (!mTraversalScheduled) { 970 mTraversalScheduled = true; 971 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 972 mChoreographer.postCallback( 973 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 974 scheduleConsumeBatchedInput(); 975 } 976 } 977 978 void unscheduleTraversals() { 979 if (mTraversalScheduled) { 980 mTraversalScheduled = false; 981 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 982 mChoreographer.removeCallbacks( 983 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 984 } 985 } 986 987 void doTraversal() { 988 if (mTraversalScheduled) { 989 mTraversalScheduled = false; 990 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 991 992 if (mProfile) { 993 Debug.startMethodTracing("ViewAncestor"); 994 } 995 996 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 997 try { 998 performTraversals(); 999 } finally { 1000 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1001 } 1002 1003 if (mProfile) { 1004 Debug.stopMethodTracing(); 1005 mProfile = false; 1006 } 1007 } 1008 } 1009 1010 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1011 // Update window's global keep screen on flag: if a view has requested 1012 // that the screen be kept on, then it is always set; otherwise, it is 1013 // set to whatever the client last requested for the global state. 1014 if (mAttachInfo.mKeepScreenOn) { 1015 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1016 } else { 1017 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1018 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1019 } 1020 } 1021 1022 private boolean collectViewAttributes() { 1023 final View.AttachInfo attachInfo = mAttachInfo; 1024 if (attachInfo.mRecomputeGlobalAttributes) { 1025 //Log.i(TAG, "Computing view hierarchy attributes!"); 1026 attachInfo.mRecomputeGlobalAttributes = false; 1027 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1028 attachInfo.mKeepScreenOn = false; 1029 attachInfo.mSystemUiVisibility = 0; 1030 attachInfo.mHasSystemUiListeners = false; 1031 mView.dispatchCollectViewAttributes(attachInfo, 0); 1032 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1033 WindowManager.LayoutParams params = mWindowAttributes; 1034 attachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1035 if (attachInfo.mKeepScreenOn != oldScreenOn 1036 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1037 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1038 applyKeepScreenOnFlag(params); 1039 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1040 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1041 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1042 return true; 1043 } 1044 } 1045 return false; 1046 } 1047 1048 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1049 int vis = 0; 1050 // Translucent decor window flags imply stable system ui visibility. 1051 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1052 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1053 } 1054 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1055 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1056 } 1057 return vis; 1058 } 1059 1060 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1061 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1062 int childWidthMeasureSpec; 1063 int childHeightMeasureSpec; 1064 boolean windowSizeMayChange = false; 1065 1066 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1067 "Measuring " + host + " in display " + desiredWindowWidth 1068 + "x" + desiredWindowHeight + "..."); 1069 1070 boolean goodMeasure = false; 1071 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1072 // On large screens, we don't want to allow dialogs to just 1073 // stretch to fill the entire width of the screen to display 1074 // one line of text. First try doing the layout at a smaller 1075 // size to see if it will fit. 1076 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1077 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1078 int baseSize = 0; 1079 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1080 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1081 } 1082 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1083 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1084 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1085 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1086 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1087 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1088 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1089 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1090 goodMeasure = true; 1091 } else { 1092 // Didn't fit in that size... try expanding a bit. 1093 baseSize = (baseSize+desiredWindowWidth)/2; 1094 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1095 + baseSize); 1096 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1097 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1098 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1099 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1100 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1101 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1102 goodMeasure = true; 1103 } 1104 } 1105 } 1106 } 1107 1108 if (!goodMeasure) { 1109 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1110 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1111 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1112 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1113 windowSizeMayChange = true; 1114 } 1115 } 1116 1117 if (DBG) { 1118 System.out.println("======================================"); 1119 System.out.println("performTraversals -- after measure"); 1120 host.debug(); 1121 } 1122 1123 return windowSizeMayChange; 1124 } 1125 1126 private void performTraversals() { 1127 // cache mView since it is used so much below... 1128 final View host = mView; 1129 1130 if (DBG) { 1131 System.out.println("======================================"); 1132 System.out.println("performTraversals"); 1133 host.debug(); 1134 } 1135 1136 if (host == null || !mAdded) 1137 return; 1138 1139 mIsInTraversal = true; 1140 mWillDrawSoon = true; 1141 boolean windowSizeMayChange = false; 1142 boolean newSurface = false; 1143 boolean surfaceChanged = false; 1144 WindowManager.LayoutParams lp = mWindowAttributes; 1145 1146 int desiredWindowWidth; 1147 int desiredWindowHeight; 1148 1149 final View.AttachInfo attachInfo = mAttachInfo; 1150 1151 final int viewVisibility = getHostVisibility(); 1152 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1153 || mNewSurfaceNeeded; 1154 1155 WindowManager.LayoutParams params = null; 1156 if (mWindowAttributesChanged) { 1157 mWindowAttributesChanged = false; 1158 surfaceChanged = true; 1159 params = lp; 1160 } 1161 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1162 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1163 params = lp; 1164 mFullRedrawNeeded = true; 1165 mLayoutRequested = true; 1166 if (mLastInCompatMode) { 1167 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1168 mLastInCompatMode = false; 1169 } else { 1170 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1171 mLastInCompatMode = true; 1172 } 1173 } 1174 1175 mWindowAttributesChangesFlag = 0; 1176 1177 Rect frame = mWinFrame; 1178 if (mFirst) { 1179 mFullRedrawNeeded = true; 1180 mLayoutRequested = true; 1181 1182 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1183 // NOTE -- system code, won't try to do compat mode. 1184 Point size = new Point(); 1185 mDisplay.getRealSize(size); 1186 desiredWindowWidth = size.x; 1187 desiredWindowHeight = size.y; 1188 } else { 1189 DisplayMetrics packageMetrics = 1190 mView.getContext().getResources().getDisplayMetrics(); 1191 desiredWindowWidth = packageMetrics.widthPixels; 1192 desiredWindowHeight = packageMetrics.heightPixels; 1193 } 1194 1195 // For the very first time, tell the view hierarchy that it 1196 // is attached to the window. Note that at this point the surface 1197 // object is not initialized to its backing store, but soon it 1198 // will be (assuming the window is visible). 1199 attachInfo.mSurface = mSurface; 1200 // We used to use the following condition to choose 32 bits drawing caches: 1201 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1202 // However, windows are now always 32 bits by default, so choose 32 bits 1203 attachInfo.mUse32BitDrawingCache = true; 1204 attachInfo.mHasWindowFocus = false; 1205 attachInfo.mWindowVisibility = viewVisibility; 1206 attachInfo.mRecomputeGlobalAttributes = false; 1207 viewVisibilityChanged = false; 1208 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1209 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1210 // Set the layout direction if it has not been set before (inherit is the default) 1211 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1212 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1213 } 1214 host.dispatchAttachedToWindow(attachInfo, 0); 1215 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1216 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1217 host.fitSystemWindows(mFitSystemWindowsInsets); 1218 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1219 1220 } else { 1221 desiredWindowWidth = frame.width(); 1222 desiredWindowHeight = frame.height(); 1223 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1224 if (DEBUG_ORIENTATION) Log.v(TAG, 1225 "View " + host + " resized to: " + frame); 1226 mFullRedrawNeeded = true; 1227 mLayoutRequested = true; 1228 windowSizeMayChange = true; 1229 } 1230 } 1231 1232 if (viewVisibilityChanged) { 1233 attachInfo.mWindowVisibility = viewVisibility; 1234 host.dispatchWindowVisibilityChanged(viewVisibility); 1235 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1236 destroyHardwareResources(); 1237 } 1238 if (viewVisibility == View.GONE) { 1239 // After making a window gone, we will count it as being 1240 // shown for the first time the next time it gets focus. 1241 mHasHadWindowFocus = false; 1242 } 1243 } 1244 1245 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1246 getRunQueue().executeActions(attachInfo.mHandler); 1247 1248 boolean insetsChanged = false; 1249 1250 boolean layoutRequested = mLayoutRequested && !mStopped; 1251 if (layoutRequested) { 1252 1253 final Resources res = mView.getContext().getResources(); 1254 1255 if (mFirst) { 1256 // make sure touch mode code executes by setting cached value 1257 // to opposite of the added touch mode. 1258 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1259 ensureTouchModeLocally(mAddedTouchMode); 1260 } else { 1261 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1262 insetsChanged = true; 1263 } 1264 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1265 insetsChanged = true; 1266 } 1267 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1268 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1269 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1270 + mAttachInfo.mVisibleInsets); 1271 } 1272 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1273 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1274 windowSizeMayChange = true; 1275 1276 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 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 if (!mAttachInfo.mHasWindowFocus) { 2530 return; 2531 } 2532 2533 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2534 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2535 return; 2536 } 2537 2538 final View host = mAccessibilityFocusedHost; 2539 if (host == null || host.mAttachInfo == null) { 2540 return; 2541 } 2542 2543 final Drawable drawable = getAccessibilityFocusedDrawable(); 2544 if (drawable == null) { 2545 return; 2546 } 2547 2548 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2549 final Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2550 if (provider == null) { 2551 host.getBoundsOnScreen(bounds); 2552 } else if (mAccessibilityFocusedVirtualView != null) { 2553 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2554 } else { 2555 return; 2556 } 2557 2558 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2559 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2560 drawable.setBounds(bounds); 2561 drawable.draw(canvas); 2562 } 2563 2564 private Drawable getAccessibilityFocusedDrawable() { 2565 if (mAttachInfo != null) { 2566 // Lazily load the accessibility focus drawable. 2567 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2568 TypedValue value = new TypedValue(); 2569 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2570 R.attr.accessibilityFocusedDrawable, value, true); 2571 if (resolved) { 2572 mAttachInfo.mAccessibilityFocusDrawable = 2573 mView.mContext.getResources().getDrawable(value.resourceId); 2574 } 2575 } 2576 return mAttachInfo.mAccessibilityFocusDrawable; 2577 } 2578 return null; 2579 } 2580 2581 void invalidateDisplayLists() { 2582 final ArrayList<DisplayList> displayLists = mDisplayLists; 2583 final int count = displayLists.size(); 2584 2585 for (int i = 0; i < count; i++) { 2586 final DisplayList displayList = displayLists.get(i); 2587 if (displayList.isDirty()) { 2588 displayList.reset(); 2589 } 2590 } 2591 2592 displayLists.clear(); 2593 } 2594 2595 /** 2596 * @hide 2597 */ 2598 public void setDrawDuringWindowsAnimating(boolean value) { 2599 mDrawDuringWindowsAnimating = value; 2600 if (value) { 2601 handleDispatchDoneAnimating(); 2602 } 2603 } 2604 2605 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2606 final View.AttachInfo attachInfo = mAttachInfo; 2607 final Rect ci = attachInfo.mContentInsets; 2608 final Rect vi = attachInfo.mVisibleInsets; 2609 int scrollY = 0; 2610 boolean handled = false; 2611 2612 if (vi.left > ci.left || vi.top > ci.top 2613 || vi.right > ci.right || vi.bottom > ci.bottom) { 2614 // We'll assume that we aren't going to change the scroll 2615 // offset, since we want to avoid that unless it is actually 2616 // going to make the focus visible... otherwise we scroll 2617 // all over the place. 2618 scrollY = mScrollY; 2619 // We can be called for two different situations: during a draw, 2620 // to update the scroll position if the focus has changed (in which 2621 // case 'rectangle' is null), or in response to a 2622 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2623 // is non-null and we just want to scroll to whatever that 2624 // rectangle is). 2625 final View focus = mView.findFocus(); 2626 if (focus == null) { 2627 return false; 2628 } 2629 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2630 if (focus != lastScrolledFocus) { 2631 // If the focus has changed, then ignore any requests to scroll 2632 // to a rectangle; first we want to make sure the entire focus 2633 // view is visible. 2634 rectangle = null; 2635 } 2636 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2637 + " rectangle=" + rectangle + " ci=" + ci 2638 + " vi=" + vi); 2639 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2640 // Optimization: if the focus hasn't changed since last 2641 // time, and no layout has happened, then just leave things 2642 // as they are. 2643 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2644 + mScrollY + " vi=" + vi.toShortString()); 2645 } else { 2646 // We need to determine if the currently focused view is 2647 // within the visible part of the window and, if not, apply 2648 // a pan so it can be seen. 2649 mLastScrolledFocus = new WeakReference<View>(focus); 2650 mScrollMayChange = false; 2651 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2652 // Try to find the rectangle from the focus view. 2653 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2654 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2655 + mView.getWidth() + " h=" + mView.getHeight() 2656 + " ci=" + ci.toShortString() 2657 + " vi=" + vi.toShortString()); 2658 if (rectangle == null) { 2659 focus.getFocusedRect(mTempRect); 2660 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2661 + ": focusRect=" + mTempRect.toShortString()); 2662 if (mView instanceof ViewGroup) { 2663 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2664 focus, mTempRect); 2665 } 2666 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2667 "Focus in window: focusRect=" 2668 + mTempRect.toShortString() 2669 + " visRect=" + mVisRect.toShortString()); 2670 } else { 2671 mTempRect.set(rectangle); 2672 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2673 "Request scroll to rect: " 2674 + mTempRect.toShortString() 2675 + " visRect=" + mVisRect.toShortString()); 2676 } 2677 if (mTempRect.intersect(mVisRect)) { 2678 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2679 "Focus window visible rect: " 2680 + mTempRect.toShortString()); 2681 if (mTempRect.height() > 2682 (mView.getHeight()-vi.top-vi.bottom)) { 2683 // If the focus simply is not going to fit, then 2684 // best is probably just to leave things as-is. 2685 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2686 "Too tall; leaving scrollY=" + scrollY); 2687 } else if ((mTempRect.top-scrollY) < vi.top) { 2688 scrollY -= vi.top - (mTempRect.top-scrollY); 2689 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2690 "Top covered; scrollY=" + scrollY); 2691 } else if ((mTempRect.bottom-scrollY) 2692 > (mView.getHeight()-vi.bottom)) { 2693 scrollY += (mTempRect.bottom-scrollY) 2694 - (mView.getHeight()-vi.bottom); 2695 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2696 "Bottom covered; scrollY=" + scrollY); 2697 } 2698 handled = true; 2699 } 2700 } 2701 } 2702 } 2703 2704 if (scrollY != mScrollY) { 2705 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2706 + mScrollY + " , new=" + scrollY); 2707 if (!immediate && mResizeBuffer == null) { 2708 if (mScroller == null) { 2709 mScroller = new Scroller(mView.getContext()); 2710 } 2711 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2712 } else if (mScroller != null) { 2713 mScroller.abortAnimation(); 2714 } 2715 mScrollY = scrollY; 2716 } 2717 2718 return handled; 2719 } 2720 2721 /** 2722 * @hide 2723 */ 2724 public View getAccessibilityFocusedHost() { 2725 return mAccessibilityFocusedHost; 2726 } 2727 2728 /** 2729 * @hide 2730 */ 2731 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2732 return mAccessibilityFocusedVirtualView; 2733 } 2734 2735 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2736 // If we have a virtual view with accessibility focus we need 2737 // to clear the focus and invalidate the virtual view bounds. 2738 if (mAccessibilityFocusedVirtualView != null) { 2739 2740 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2741 View focusHost = mAccessibilityFocusedHost; 2742 2743 // Wipe the state of the current accessibility focus since 2744 // the call into the provider to clear accessibility focus 2745 // will fire an accessibility event which will end up calling 2746 // this method and we want to have clean state when this 2747 // invocation happens. 2748 mAccessibilityFocusedHost = null; 2749 mAccessibilityFocusedVirtualView = null; 2750 2751 // Clear accessibility focus on the host after clearing state since 2752 // this method may be reentrant. 2753 focusHost.clearAccessibilityFocusNoCallbacks(); 2754 2755 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2756 if (provider != null) { 2757 // Invalidate the area of the cleared accessibility focus. 2758 focusNode.getBoundsInParent(mTempRect); 2759 focusHost.invalidate(mTempRect); 2760 // Clear accessibility focus in the virtual node. 2761 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2762 focusNode.getSourceNodeId()); 2763 provider.performAction(virtualNodeId, 2764 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2765 } 2766 focusNode.recycle(); 2767 } 2768 if (mAccessibilityFocusedHost != null) { 2769 // Clear accessibility focus in the view. 2770 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2771 } 2772 2773 // Set the new focus host and node. 2774 mAccessibilityFocusedHost = view; 2775 mAccessibilityFocusedVirtualView = node; 2776 } 2777 2778 @Override 2779 public void requestChildFocus(View child, View focused) { 2780 if (DEBUG_INPUT_RESIZE) { 2781 Log.v(TAG, "Request child focus: focus now " + focused); 2782 } 2783 checkThread(); 2784 scheduleTraversals(); 2785 } 2786 2787 @Override 2788 public void clearChildFocus(View child) { 2789 if (DEBUG_INPUT_RESIZE) { 2790 Log.v(TAG, "Clearing child focus"); 2791 } 2792 checkThread(); 2793 scheduleTraversals(); 2794 } 2795 2796 @Override 2797 public ViewParent getParentForAccessibility() { 2798 return null; 2799 } 2800 2801 @Override 2802 public void focusableViewAvailable(View v) { 2803 checkThread(); 2804 if (mView != null) { 2805 if (!mView.hasFocus()) { 2806 v.requestFocus(); 2807 } else { 2808 // the one case where will transfer focus away from the current one 2809 // is if the current view is a view group that prefers to give focus 2810 // to its children first AND the view is a descendant of it. 2811 View focused = mView.findFocus(); 2812 if (focused instanceof ViewGroup) { 2813 ViewGroup group = (ViewGroup) focused; 2814 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2815 && isViewDescendantOf(v, focused)) { 2816 v.requestFocus(); 2817 } 2818 } 2819 } 2820 } 2821 } 2822 2823 @Override 2824 public void recomputeViewAttributes(View child) { 2825 checkThread(); 2826 if (mView == child) { 2827 mAttachInfo.mRecomputeGlobalAttributes = true; 2828 if (!mWillDrawSoon) { 2829 scheduleTraversals(); 2830 } 2831 } 2832 } 2833 2834 void dispatchDetachedFromWindow() { 2835 if (mView != null && mView.mAttachInfo != null) { 2836 if (mAttachInfo.mHardwareRenderer != null && 2837 mAttachInfo.mHardwareRenderer.isEnabled()) { 2838 mAttachInfo.mHardwareRenderer.validate(); 2839 } 2840 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2841 mView.dispatchDetachedFromWindow(); 2842 } 2843 2844 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2845 mAccessibilityManager.removeAccessibilityStateChangeListener( 2846 mAccessibilityInteractionConnectionManager); 2847 removeSendWindowContentChangedCallback(); 2848 2849 destroyHardwareRenderer(); 2850 2851 setAccessibilityFocus(null, null); 2852 2853 mView.assignParent(null); 2854 mView = null; 2855 mAttachInfo.mRootView = null; 2856 mAttachInfo.mSurface = null; 2857 2858 mSurface.release(); 2859 2860 if (mInputQueueCallback != null && mInputQueue != null) { 2861 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2862 mInputQueue.dispose(); 2863 mInputQueueCallback = null; 2864 mInputQueue = null; 2865 } 2866 if (mInputEventReceiver != null) { 2867 mInputEventReceiver.dispose(); 2868 mInputEventReceiver = null; 2869 } 2870 try { 2871 mWindowSession.remove(mWindow); 2872 } catch (RemoteException e) { 2873 } 2874 2875 // Dispose the input channel after removing the window so the Window Manager 2876 // doesn't interpret the input channel being closed as an abnormal termination. 2877 if (mInputChannel != null) { 2878 mInputChannel.dispose(); 2879 mInputChannel = null; 2880 } 2881 2882 unscheduleTraversals(); 2883 } 2884 2885 void updateConfiguration(Configuration config, boolean force) { 2886 if (DEBUG_CONFIGURATION) Log.v(TAG, 2887 "Applying new config to window " 2888 + mWindowAttributes.getTitle() 2889 + ": " + config); 2890 2891 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2892 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2893 config = new Configuration(config); 2894 ci.applyToConfiguration(mNoncompatDensity, config); 2895 } 2896 2897 synchronized (sConfigCallbacks) { 2898 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2899 sConfigCallbacks.get(i).onConfigurationChanged(config); 2900 } 2901 } 2902 if (mView != null) { 2903 // At this point the resources have been updated to 2904 // have the most recent config, whatever that is. Use 2905 // the one in them which may be newer. 2906 config = mView.getResources().getConfiguration(); 2907 if (force || mLastConfiguration.diff(config) != 0) { 2908 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2909 final int currentLayoutDirection = config.getLayoutDirection(); 2910 mLastConfiguration.setTo(config); 2911 if (lastLayoutDirection != currentLayoutDirection && 2912 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2913 mView.setLayoutDirection(currentLayoutDirection); 2914 } 2915 mView.dispatchConfigurationChanged(config); 2916 } 2917 } 2918 2919 mFlipControllerFallbackKeys = 2920 mContext.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 2921 } 2922 2923 /** 2924 * Return true if child is an ancestor of parent, (or equal to the parent). 2925 */ 2926 public static boolean isViewDescendantOf(View child, View parent) { 2927 if (child == parent) { 2928 return true; 2929 } 2930 2931 final ViewParent theParent = child.getParent(); 2932 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2933 } 2934 2935 private static void forceLayout(View view) { 2936 view.forceLayout(); 2937 if (view instanceof ViewGroup) { 2938 ViewGroup group = (ViewGroup) view; 2939 final int count = group.getChildCount(); 2940 for (int i = 0; i < count; i++) { 2941 forceLayout(group.getChildAt(i)); 2942 } 2943 } 2944 } 2945 2946 private final static int MSG_INVALIDATE = 1; 2947 private final static int MSG_INVALIDATE_RECT = 2; 2948 private final static int MSG_DIE = 3; 2949 private final static int MSG_RESIZED = 4; 2950 private final static int MSG_RESIZED_REPORT = 5; 2951 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2952 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 2953 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2954 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2955 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2956 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2957 private final static int MSG_CHECK_FOCUS = 13; 2958 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2959 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2960 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2961 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2962 private final static int MSG_UPDATE_CONFIGURATION = 18; 2963 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2964 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2965 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2966 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2967 private final static int MSG_INVALIDATE_WORLD = 23; 2968 private final static int MSG_WINDOW_MOVED = 24; 2969 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2970 2971 final class ViewRootHandler extends Handler { 2972 @Override 2973 public String getMessageName(Message message) { 2974 switch (message.what) { 2975 case MSG_INVALIDATE: 2976 return "MSG_INVALIDATE"; 2977 case MSG_INVALIDATE_RECT: 2978 return "MSG_INVALIDATE_RECT"; 2979 case MSG_DIE: 2980 return "MSG_DIE"; 2981 case MSG_RESIZED: 2982 return "MSG_RESIZED"; 2983 case MSG_RESIZED_REPORT: 2984 return "MSG_RESIZED_REPORT"; 2985 case MSG_WINDOW_FOCUS_CHANGED: 2986 return "MSG_WINDOW_FOCUS_CHANGED"; 2987 case MSG_DISPATCH_INPUT_EVENT: 2988 return "MSG_DISPATCH_INPUT_EVENT"; 2989 case MSG_DISPATCH_APP_VISIBILITY: 2990 return "MSG_DISPATCH_APP_VISIBILITY"; 2991 case MSG_DISPATCH_GET_NEW_SURFACE: 2992 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2993 case MSG_DISPATCH_KEY_FROM_IME: 2994 return "MSG_DISPATCH_KEY_FROM_IME"; 2995 case MSG_FINISH_INPUT_CONNECTION: 2996 return "MSG_FINISH_INPUT_CONNECTION"; 2997 case MSG_CHECK_FOCUS: 2998 return "MSG_CHECK_FOCUS"; 2999 case MSG_CLOSE_SYSTEM_DIALOGS: 3000 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3001 case MSG_DISPATCH_DRAG_EVENT: 3002 return "MSG_DISPATCH_DRAG_EVENT"; 3003 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3004 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3005 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3006 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3007 case MSG_UPDATE_CONFIGURATION: 3008 return "MSG_UPDATE_CONFIGURATION"; 3009 case MSG_PROCESS_INPUT_EVENTS: 3010 return "MSG_PROCESS_INPUT_EVENTS"; 3011 case MSG_DISPATCH_SCREEN_STATE: 3012 return "MSG_DISPATCH_SCREEN_STATE"; 3013 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3014 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3015 case MSG_DISPATCH_DONE_ANIMATING: 3016 return "MSG_DISPATCH_DONE_ANIMATING"; 3017 case MSG_WINDOW_MOVED: 3018 return "MSG_WINDOW_MOVED"; 3019 case MSG_FLUSH_LAYER_UPDATES: 3020 return "MSG_FLUSH_LAYER_UPDATES"; 3021 } 3022 return super.getMessageName(message); 3023 } 3024 3025 @Override 3026 public void handleMessage(Message msg) { 3027 switch (msg.what) { 3028 case MSG_INVALIDATE: 3029 ((View) msg.obj).invalidate(); 3030 break; 3031 case MSG_INVALIDATE_RECT: 3032 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3033 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3034 info.recycle(); 3035 break; 3036 case MSG_PROCESS_INPUT_EVENTS: 3037 mProcessInputEventsScheduled = false; 3038 doProcessInputEvents(); 3039 break; 3040 case MSG_DISPATCH_APP_VISIBILITY: 3041 handleAppVisibility(msg.arg1 != 0); 3042 break; 3043 case MSG_DISPATCH_GET_NEW_SURFACE: 3044 handleGetNewSurface(); 3045 break; 3046 case MSG_RESIZED: { 3047 // Recycled in the fall through... 3048 SomeArgs args = (SomeArgs) msg.obj; 3049 if (mWinFrame.equals(args.arg1) 3050 && mPendingOverscanInsets.equals(args.arg5) 3051 && mPendingContentInsets.equals(args.arg2) 3052 && mPendingVisibleInsets.equals(args.arg3) 3053 && args.arg4 == null) { 3054 break; 3055 } 3056 } // fall through... 3057 case MSG_RESIZED_REPORT: 3058 if (mAdded) { 3059 SomeArgs args = (SomeArgs) msg.obj; 3060 3061 Configuration config = (Configuration) args.arg4; 3062 if (config != null) { 3063 updateConfiguration(config, false); 3064 } 3065 3066 mWinFrame.set((Rect) args.arg1); 3067 mPendingOverscanInsets.set((Rect) args.arg5); 3068 mPendingContentInsets.set((Rect) args.arg2); 3069 mPendingVisibleInsets.set((Rect) args.arg3); 3070 3071 args.recycle(); 3072 3073 if (msg.what == MSG_RESIZED_REPORT) { 3074 mReportNextDraw = true; 3075 } 3076 3077 if (mView != null) { 3078 forceLayout(mView); 3079 } 3080 3081 requestLayout(); 3082 } 3083 break; 3084 case MSG_WINDOW_MOVED: 3085 if (mAdded) { 3086 final int w = mWinFrame.width(); 3087 final int h = mWinFrame.height(); 3088 final int l = msg.arg1; 3089 final int t = msg.arg2; 3090 mWinFrame.left = l; 3091 mWinFrame.right = l + w; 3092 mWinFrame.top = t; 3093 mWinFrame.bottom = t + h; 3094 3095 if (mView != null) { 3096 forceLayout(mView); 3097 } 3098 requestLayout(); 3099 } 3100 break; 3101 case MSG_WINDOW_FOCUS_CHANGED: { 3102 if (mAdded) { 3103 boolean hasWindowFocus = msg.arg1 != 0; 3104 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3105 3106 profileRendering(hasWindowFocus); 3107 3108 if (hasWindowFocus) { 3109 boolean inTouchMode = msg.arg2 != 0; 3110 ensureTouchModeLocally(inTouchMode); 3111 3112 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3113 mFullRedrawNeeded = true; 3114 try { 3115 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3116 mWidth, mHeight, mHolder.getSurface()); 3117 } catch (OutOfResourcesException e) { 3118 Log.e(TAG, "OutOfResourcesException locking surface", e); 3119 try { 3120 if (!mWindowSession.outOfMemory(mWindow)) { 3121 Slog.w(TAG, "No processes killed for memory; killing self"); 3122 Process.killProcess(Process.myPid()); 3123 } 3124 } catch (RemoteException ex) { 3125 } 3126 // Retry in a bit. 3127 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3128 return; 3129 } 3130 } 3131 } 3132 3133 mLastWasImTarget = WindowManager.LayoutParams 3134 .mayUseInputMethod(mWindowAttributes.flags); 3135 3136 InputMethodManager imm = InputMethodManager.peekInstance(); 3137 if (mView != null) { 3138 if (hasWindowFocus && imm != null && mLastWasImTarget && 3139 !isInLocalFocusMode()) { 3140 imm.startGettingWindowFocus(mView); 3141 } 3142 mAttachInfo.mKeyDispatchState.reset(); 3143 mView.dispatchWindowFocusChanged(hasWindowFocus); 3144 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3145 } 3146 3147 // Note: must be done after the focus change callbacks, 3148 // so all of the view state is set up correctly. 3149 if (hasWindowFocus) { 3150 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3151 imm.onWindowFocus(mView, mView.findFocus(), 3152 mWindowAttributes.softInputMode, 3153 !mHasHadWindowFocus, mWindowAttributes.flags); 3154 } 3155 // Clear the forward bit. We can just do this directly, since 3156 // the window manager doesn't care about it. 3157 mWindowAttributes.softInputMode &= 3158 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3159 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3160 .softInputMode &= 3161 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3162 mHasHadWindowFocus = true; 3163 } 3164 3165 if (mView != null && mAccessibilityManager.isEnabled()) { 3166 if (hasWindowFocus) { 3167 mView.sendAccessibilityEvent( 3168 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3169 } 3170 } 3171 } 3172 } break; 3173 case MSG_DIE: 3174 doDie(); 3175 break; 3176 case MSG_DISPATCH_INPUT_EVENT: { 3177 InputEvent event = (InputEvent)msg.obj; 3178 enqueueInputEvent(event, null, 0, true); 3179 } break; 3180 case MSG_DISPATCH_KEY_FROM_IME: { 3181 if (LOCAL_LOGV) Log.v( 3182 TAG, "Dispatching key " 3183 + msg.obj + " from IME to " + mView); 3184 KeyEvent event = (KeyEvent)msg.obj; 3185 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3186 // The IME is trying to say this event is from the 3187 // system! Bad bad bad! 3188 //noinspection UnusedAssignment 3189 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3190 } 3191 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3192 } break; 3193 case MSG_FINISH_INPUT_CONNECTION: { 3194 InputMethodManager imm = InputMethodManager.peekInstance(); 3195 if (imm != null) { 3196 imm.reportFinishInputConnection((InputConnection)msg.obj); 3197 } 3198 } break; 3199 case MSG_CHECK_FOCUS: { 3200 InputMethodManager imm = InputMethodManager.peekInstance(); 3201 if (imm != null) { 3202 imm.checkFocus(); 3203 } 3204 } break; 3205 case MSG_CLOSE_SYSTEM_DIALOGS: { 3206 if (mView != null) { 3207 mView.onCloseSystemDialogs((String)msg.obj); 3208 } 3209 } break; 3210 case MSG_DISPATCH_DRAG_EVENT: 3211 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3212 DragEvent event = (DragEvent)msg.obj; 3213 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3214 handleDragEvent(event); 3215 } break; 3216 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3217 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3218 } break; 3219 case MSG_UPDATE_CONFIGURATION: { 3220 Configuration config = (Configuration)msg.obj; 3221 if (config.isOtherSeqNewer(mLastConfiguration)) { 3222 config = mLastConfiguration; 3223 } 3224 updateConfiguration(config, false); 3225 } break; 3226 case MSG_DISPATCH_SCREEN_STATE: { 3227 if (mView != null) { 3228 handleScreenStateChange(msg.arg1 == 1); 3229 } 3230 } break; 3231 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3232 setAccessibilityFocus(null, null); 3233 } break; 3234 case MSG_DISPATCH_DONE_ANIMATING: { 3235 handleDispatchDoneAnimating(); 3236 } break; 3237 case MSG_INVALIDATE_WORLD: { 3238 if (mView != null) { 3239 invalidateWorld(mView); 3240 } 3241 } break; 3242 case MSG_FLUSH_LAYER_UPDATES: { 3243 flushHardwareLayerUpdates(); 3244 } break; 3245 } 3246 } 3247 } 3248 3249 final ViewRootHandler mHandler = new ViewRootHandler(); 3250 3251 /** 3252 * Something in the current window tells us we need to change the touch mode. For 3253 * example, we are not in touch mode, and the user touches the screen. 3254 * 3255 * If the touch mode has changed, tell the window manager, and handle it locally. 3256 * 3257 * @param inTouchMode Whether we want to be in touch mode. 3258 * @return True if the touch mode changed and focus changed was changed as a result 3259 */ 3260 boolean ensureTouchMode(boolean inTouchMode) { 3261 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3262 + "touch mode is " + mAttachInfo.mInTouchMode); 3263 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3264 3265 // tell the window manager 3266 try { 3267 if (!isInLocalFocusMode()) { 3268 mWindowSession.setInTouchMode(inTouchMode); 3269 } 3270 } catch (RemoteException e) { 3271 throw new RuntimeException(e); 3272 } 3273 3274 // handle the change 3275 return ensureTouchModeLocally(inTouchMode); 3276 } 3277 3278 /** 3279 * Ensure that the touch mode for this window is set, and if it is changing, 3280 * take the appropriate action. 3281 * @param inTouchMode Whether we want to be in touch mode. 3282 * @return True if the touch mode changed and focus changed was changed as a result 3283 */ 3284 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3285 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3286 + "touch mode is " + mAttachInfo.mInTouchMode); 3287 3288 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3289 3290 mAttachInfo.mInTouchMode = inTouchMode; 3291 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3292 3293 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3294 } 3295 3296 private boolean enterTouchMode() { 3297 if (mView != null && mView.hasFocus()) { 3298 // note: not relying on mFocusedView here because this could 3299 // be when the window is first being added, and mFocused isn't 3300 // set yet. 3301 final View focused = mView.findFocus(); 3302 if (focused != null && !focused.isFocusableInTouchMode()) { 3303 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3304 if (ancestorToTakeFocus != null) { 3305 // there is an ancestor that wants focus after its 3306 // descendants that is focusable in touch mode.. give it 3307 // focus 3308 return ancestorToTakeFocus.requestFocus(); 3309 } else { 3310 // There's nothing to focus. Clear and propagate through the 3311 // hierarchy, but don't attempt to place new focus. 3312 focused.clearFocusInternal(true, false); 3313 return true; 3314 } 3315 } 3316 } 3317 return false; 3318 } 3319 3320 /** 3321 * Find an ancestor of focused that wants focus after its descendants and is 3322 * focusable in touch mode. 3323 * @param focused The currently focused view. 3324 * @return An appropriate view, or null if no such view exists. 3325 */ 3326 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3327 ViewParent parent = focused.getParent(); 3328 while (parent instanceof ViewGroup) { 3329 final ViewGroup vgParent = (ViewGroup) parent; 3330 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3331 && vgParent.isFocusableInTouchMode()) { 3332 return vgParent; 3333 } 3334 if (vgParent.isRootNamespace()) { 3335 return null; 3336 } else { 3337 parent = vgParent.getParent(); 3338 } 3339 } 3340 return null; 3341 } 3342 3343 private boolean leaveTouchMode() { 3344 if (mView != null) { 3345 if (mView.hasFocus()) { 3346 View focusedView = mView.findFocus(); 3347 if (!(focusedView instanceof ViewGroup)) { 3348 // some view has focus, let it keep it 3349 return false; 3350 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3351 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3352 // some view group has focus, and doesn't prefer its children 3353 // over itself for focus, so let them keep it. 3354 return false; 3355 } 3356 } 3357 3358 // find the best view to give focus to in this brave new non-touch-mode 3359 // world 3360 final View focused = focusSearch(null, View.FOCUS_DOWN); 3361 if (focused != null) { 3362 return focused.requestFocus(View.FOCUS_DOWN); 3363 } 3364 } 3365 return false; 3366 } 3367 3368 /** 3369 * Base class for implementing a stage in the chain of responsibility 3370 * for processing input events. 3371 * <p> 3372 * Events are delivered to the stage by the {@link #deliver} method. The stage 3373 * then has the choice of finishing the event or forwarding it to the next stage. 3374 * </p> 3375 */ 3376 abstract class InputStage { 3377 private final InputStage mNext; 3378 3379 protected static final int FORWARD = 0; 3380 protected static final int FINISH_HANDLED = 1; 3381 protected static final int FINISH_NOT_HANDLED = 2; 3382 3383 /** 3384 * Creates an input stage. 3385 * @param next The next stage to which events should be forwarded. 3386 */ 3387 public InputStage(InputStage next) { 3388 mNext = next; 3389 } 3390 3391 /** 3392 * Delivers an event to be processed. 3393 */ 3394 public final void deliver(QueuedInputEvent q) { 3395 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3396 forward(q); 3397 } else if (mView == null || !mAdded) { 3398 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3399 finish(q, false); 3400 } else if (!mAttachInfo.mHasWindowFocus && 3401 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3402 !isTerminalInputEvent(q.mEvent)) { 3403 // If this is a focused event and the window doesn't currently have input focus, 3404 // then drop this event. This could be an event that came back from the previous 3405 // stage but the window has lost focus in the meantime. 3406 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3407 finish(q, false); 3408 } else { 3409 apply(q, onProcess(q)); 3410 } 3411 } 3412 3413 /** 3414 * Marks the the input event as finished then forwards it to the next stage. 3415 */ 3416 protected void finish(QueuedInputEvent q, boolean handled) { 3417 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3418 if (handled) { 3419 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3420 } 3421 forward(q); 3422 } 3423 3424 /** 3425 * Forwards the event to the next stage. 3426 */ 3427 protected void forward(QueuedInputEvent q) { 3428 onDeliverToNext(q); 3429 } 3430 3431 /** 3432 * Applies a result code from {@link #onProcess} to the specified event. 3433 */ 3434 protected void apply(QueuedInputEvent q, int result) { 3435 if (result == FORWARD) { 3436 forward(q); 3437 } else if (result == FINISH_HANDLED) { 3438 finish(q, true); 3439 } else if (result == FINISH_NOT_HANDLED) { 3440 finish(q, false); 3441 } else { 3442 throw new IllegalArgumentException("Invalid result: " + result); 3443 } 3444 } 3445 3446 /** 3447 * Called when an event is ready to be processed. 3448 * @return A result code indicating how the event was handled. 3449 */ 3450 protected int onProcess(QueuedInputEvent q) { 3451 return FORWARD; 3452 } 3453 3454 /** 3455 * Called when an event is being delivered to the next stage. 3456 */ 3457 protected void onDeliverToNext(QueuedInputEvent q) { 3458 if (mNext != null) { 3459 mNext.deliver(q); 3460 } else { 3461 finishInputEvent(q); 3462 } 3463 } 3464 } 3465 3466 /** 3467 * Base class for implementing an input pipeline stage that supports 3468 * asynchronous and out-of-order processing of input events. 3469 * <p> 3470 * In addition to what a normal input stage can do, an asynchronous 3471 * input stage may also defer an input event that has been delivered to it 3472 * and finish or forward it later. 3473 * </p> 3474 */ 3475 abstract class AsyncInputStage extends InputStage { 3476 private final String mTraceCounter; 3477 3478 private QueuedInputEvent mQueueHead; 3479 private QueuedInputEvent mQueueTail; 3480 private int mQueueLength; 3481 3482 protected static final int DEFER = 3; 3483 3484 /** 3485 * Creates an asynchronous input stage. 3486 * @param next The next stage to which events should be forwarded. 3487 * @param traceCounter The name of a counter to record the size of 3488 * the queue of pending events. 3489 */ 3490 public AsyncInputStage(InputStage next, String traceCounter) { 3491 super(next); 3492 mTraceCounter = traceCounter; 3493 } 3494 3495 /** 3496 * Marks the event as deferred, which is to say that it will be handled 3497 * asynchronously. The caller is responsible for calling {@link #forward} 3498 * or {@link #finish} later when it is done handling the event. 3499 */ 3500 protected void defer(QueuedInputEvent q) { 3501 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3502 enqueue(q); 3503 } 3504 3505 @Override 3506 protected void forward(QueuedInputEvent q) { 3507 // Clear the deferred flag. 3508 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3509 3510 // Fast path if the queue is empty. 3511 QueuedInputEvent curr = mQueueHead; 3512 if (curr == null) { 3513 super.forward(q); 3514 return; 3515 } 3516 3517 // Determine whether the event must be serialized behind any others 3518 // before it can be delivered to the next stage. This is done because 3519 // deferred events might be handled out of order by the stage. 3520 final int deviceId = q.mEvent.getDeviceId(); 3521 QueuedInputEvent prev = null; 3522 boolean blocked = false; 3523 while (curr != null && curr != q) { 3524 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3525 blocked = true; 3526 } 3527 prev = curr; 3528 curr = curr.mNext; 3529 } 3530 3531 // If the event is blocked, then leave it in the queue to be delivered later. 3532 // Note that the event might not yet be in the queue if it was not previously 3533 // deferred so we will enqueue it if needed. 3534 if (blocked) { 3535 if (curr == null) { 3536 enqueue(q); 3537 } 3538 return; 3539 } 3540 3541 // The event is not blocked. Deliver it immediately. 3542 if (curr != null) { 3543 curr = curr.mNext; 3544 dequeue(q, prev); 3545 } 3546 super.forward(q); 3547 3548 // Dequeuing this event may have unblocked successors. Deliver them. 3549 while (curr != null) { 3550 if (deviceId == curr.mEvent.getDeviceId()) { 3551 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3552 break; 3553 } 3554 QueuedInputEvent next = curr.mNext; 3555 dequeue(curr, prev); 3556 super.forward(curr); 3557 curr = next; 3558 } else { 3559 prev = curr; 3560 curr = curr.mNext; 3561 } 3562 } 3563 } 3564 3565 @Override 3566 protected void apply(QueuedInputEvent q, int result) { 3567 if (result == DEFER) { 3568 defer(q); 3569 } else { 3570 super.apply(q, result); 3571 } 3572 } 3573 3574 private void enqueue(QueuedInputEvent q) { 3575 if (mQueueTail == null) { 3576 mQueueHead = q; 3577 mQueueTail = q; 3578 } else { 3579 mQueueTail.mNext = q; 3580 mQueueTail = q; 3581 } 3582 3583 mQueueLength += 1; 3584 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3585 } 3586 3587 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3588 if (prev == null) { 3589 mQueueHead = q.mNext; 3590 } else { 3591 prev.mNext = q.mNext; 3592 } 3593 if (mQueueTail == q) { 3594 mQueueTail = prev; 3595 } 3596 q.mNext = null; 3597 3598 mQueueLength -= 1; 3599 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3600 } 3601 } 3602 3603 /** 3604 * Delivers pre-ime input events to a native activity. 3605 * Does not support pointer events. 3606 */ 3607 final class NativePreImeInputStage extends AsyncInputStage 3608 implements InputQueue.FinishedInputEventCallback { 3609 public NativePreImeInputStage(InputStage next, String traceCounter) { 3610 super(next, traceCounter); 3611 } 3612 3613 @Override 3614 protected int onProcess(QueuedInputEvent q) { 3615 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3616 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3617 return DEFER; 3618 } 3619 return FORWARD; 3620 } 3621 3622 @Override 3623 public void onFinishedInputEvent(Object token, boolean handled) { 3624 QueuedInputEvent q = (QueuedInputEvent)token; 3625 if (handled) { 3626 finish(q, true); 3627 return; 3628 } 3629 forward(q); 3630 } 3631 } 3632 3633 /** 3634 * Delivers pre-ime input events to the view hierarchy. 3635 * Does not support pointer events. 3636 */ 3637 final class ViewPreImeInputStage extends InputStage { 3638 public ViewPreImeInputStage(InputStage next) { 3639 super(next); 3640 } 3641 3642 @Override 3643 protected int onProcess(QueuedInputEvent q) { 3644 if (q.mEvent instanceof KeyEvent) { 3645 return processKeyEvent(q); 3646 } 3647 return FORWARD; 3648 } 3649 3650 private int processKeyEvent(QueuedInputEvent q) { 3651 final KeyEvent event = (KeyEvent)q.mEvent; 3652 if (mView.dispatchKeyEventPreIme(event)) { 3653 return FINISH_HANDLED; 3654 } 3655 return FORWARD; 3656 } 3657 } 3658 3659 /** 3660 * Delivers input events to the ime. 3661 * Does not support pointer events. 3662 */ 3663 final class ImeInputStage extends AsyncInputStage 3664 implements InputMethodManager.FinishedInputEventCallback { 3665 public ImeInputStage(InputStage next, String traceCounter) { 3666 super(next, traceCounter); 3667 } 3668 3669 @Override 3670 protected int onProcess(QueuedInputEvent q) { 3671 if (mLastWasImTarget && !isInLocalFocusMode()) { 3672 InputMethodManager imm = InputMethodManager.peekInstance(); 3673 if (imm != null) { 3674 final InputEvent event = q.mEvent; 3675 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3676 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3677 if (result == InputMethodManager.DISPATCH_HANDLED) { 3678 return FINISH_HANDLED; 3679 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3680 return FINISH_NOT_HANDLED; 3681 } else { 3682 return DEFER; // callback will be invoked later 3683 } 3684 } 3685 } 3686 return FORWARD; 3687 } 3688 3689 @Override 3690 public void onFinishedInputEvent(Object token, boolean handled) { 3691 QueuedInputEvent q = (QueuedInputEvent)token; 3692 if (handled) { 3693 finish(q, true); 3694 return; 3695 } 3696 forward(q); 3697 } 3698 } 3699 3700 /** 3701 * Performs early processing of post-ime input events. 3702 */ 3703 final class EarlyPostImeInputStage extends InputStage { 3704 public EarlyPostImeInputStage(InputStage next) { 3705 super(next); 3706 } 3707 3708 @Override 3709 protected int onProcess(QueuedInputEvent q) { 3710 if (q.mEvent instanceof KeyEvent) { 3711 return processKeyEvent(q); 3712 } else { 3713 final int source = q.mEvent.getSource(); 3714 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3715 return processPointerEvent(q); 3716 } 3717 } 3718 return FORWARD; 3719 } 3720 3721 private int processKeyEvent(QueuedInputEvent q) { 3722 final KeyEvent event = (KeyEvent)q.mEvent; 3723 3724 // If the key's purpose is to exit touch mode then we consume it 3725 // and consider it handled. 3726 if (checkForLeavingTouchModeAndConsume(event)) { 3727 return FINISH_HANDLED; 3728 } 3729 3730 // Make sure the fallback event policy sees all keys that will be 3731 // delivered to the view hierarchy. 3732 mFallbackEventHandler.preDispatchKeyEvent(event); 3733 return FORWARD; 3734 } 3735 3736 private int processPointerEvent(QueuedInputEvent q) { 3737 final MotionEvent event = (MotionEvent)q.mEvent; 3738 3739 // Translate the pointer event for compatibility, if needed. 3740 if (mTranslator != null) { 3741 mTranslator.translateEventInScreenToAppWindow(event); 3742 } 3743 3744 // Enter touch mode on down or scroll. 3745 final int action = event.getAction(); 3746 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3747 ensureTouchMode(true); 3748 } 3749 3750 // Offset the scroll position. 3751 if (mCurScrollY != 0) { 3752 event.offsetLocation(0, mCurScrollY); 3753 } 3754 3755 // Remember the touch position for possible drag-initiation. 3756 if (event.isTouchEvent()) { 3757 mLastTouchPoint.x = event.getRawX(); 3758 mLastTouchPoint.y = event.getRawY(); 3759 } 3760 return FORWARD; 3761 } 3762 } 3763 3764 /** 3765 * Delivers post-ime input events to a native activity. 3766 */ 3767 final class NativePostImeInputStage extends AsyncInputStage 3768 implements InputQueue.FinishedInputEventCallback { 3769 public NativePostImeInputStage(InputStage next, String traceCounter) { 3770 super(next, traceCounter); 3771 } 3772 3773 @Override 3774 protected int onProcess(QueuedInputEvent q) { 3775 if (mInputQueue != null) { 3776 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3777 return DEFER; 3778 } 3779 return FORWARD; 3780 } 3781 3782 @Override 3783 public void onFinishedInputEvent(Object token, boolean handled) { 3784 QueuedInputEvent q = (QueuedInputEvent)token; 3785 if (handled) { 3786 finish(q, true); 3787 return; 3788 } 3789 forward(q); 3790 } 3791 } 3792 3793 /** 3794 * Delivers post-ime input events to the view hierarchy. 3795 */ 3796 final class ViewPostImeInputStage extends InputStage { 3797 public ViewPostImeInputStage(InputStage next) { 3798 super(next); 3799 } 3800 3801 @Override 3802 protected int onProcess(QueuedInputEvent q) { 3803 if (q.mEvent instanceof KeyEvent) { 3804 return processKeyEvent(q); 3805 } else { 3806 // If delivering a new non-key event, make sure the window is 3807 // now allowed to start updating. 3808 handleDispatchDoneAnimating(); 3809 final int source = q.mEvent.getSource(); 3810 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3811 return processPointerEvent(q); 3812 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3813 return processTrackballEvent(q); 3814 } else { 3815 return processGenericMotionEvent(q); 3816 } 3817 } 3818 } 3819 3820 private int processKeyEvent(QueuedInputEvent q) { 3821 final KeyEvent event = (KeyEvent)q.mEvent; 3822 3823 if (event.getAction() != KeyEvent.ACTION_UP) { 3824 // If delivering a new key event, make sure the window is 3825 // now allowed to start updating. 3826 handleDispatchDoneAnimating(); 3827 } 3828 3829 // Deliver the key to the view hierarchy. 3830 if (mView.dispatchKeyEvent(event)) { 3831 return FINISH_HANDLED; 3832 } 3833 3834 // If the Control modifier is held, try to interpret the key as a shortcut. 3835 if (event.getAction() == KeyEvent.ACTION_DOWN 3836 && event.isCtrlPressed() 3837 && event.getRepeatCount() == 0 3838 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3839 if (mView.dispatchKeyShortcutEvent(event)) { 3840 return FINISH_HANDLED; 3841 } 3842 } 3843 3844 // Apply the fallback event policy. 3845 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3846 return FINISH_HANDLED; 3847 } 3848 3849 // Handle automatic focus changes. 3850 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3851 int direction = 0; 3852 switch (event.getKeyCode()) { 3853 case KeyEvent.KEYCODE_DPAD_LEFT: 3854 if (event.hasNoModifiers()) { 3855 direction = View.FOCUS_LEFT; 3856 } 3857 break; 3858 case KeyEvent.KEYCODE_DPAD_RIGHT: 3859 if (event.hasNoModifiers()) { 3860 direction = View.FOCUS_RIGHT; 3861 } 3862 break; 3863 case KeyEvent.KEYCODE_DPAD_UP: 3864 if (event.hasNoModifiers()) { 3865 direction = View.FOCUS_UP; 3866 } 3867 break; 3868 case KeyEvent.KEYCODE_DPAD_DOWN: 3869 if (event.hasNoModifiers()) { 3870 direction = View.FOCUS_DOWN; 3871 } 3872 break; 3873 case KeyEvent.KEYCODE_TAB: 3874 if (event.hasNoModifiers()) { 3875 direction = View.FOCUS_FORWARD; 3876 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3877 direction = View.FOCUS_BACKWARD; 3878 } 3879 break; 3880 } 3881 if (direction != 0) { 3882 View focused = mView.findFocus(); 3883 if (focused != null) { 3884 View v = focused.focusSearch(direction); 3885 if (v != null && v != focused) { 3886 // do the math the get the interesting rect 3887 // of previous focused into the coord system of 3888 // newly focused view 3889 focused.getFocusedRect(mTempRect); 3890 if (mView instanceof ViewGroup) { 3891 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3892 focused, mTempRect); 3893 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3894 v, mTempRect); 3895 } 3896 if (v.requestFocus(direction, mTempRect)) { 3897 playSoundEffect(SoundEffectConstants 3898 .getContantForFocusDirection(direction)); 3899 return FINISH_HANDLED; 3900 } 3901 } 3902 3903 // Give the focused view a last chance to handle the dpad key. 3904 if (mView.dispatchUnhandledMove(focused, direction)) { 3905 return FINISH_HANDLED; 3906 } 3907 } else { 3908 // find the best view to give focus to in this non-touch-mode with no-focus 3909 View v = focusSearch(null, direction); 3910 if (v != null && v.requestFocus(direction)) { 3911 return FINISH_HANDLED; 3912 } 3913 } 3914 } 3915 } 3916 return FORWARD; 3917 } 3918 3919 private int processPointerEvent(QueuedInputEvent q) { 3920 final MotionEvent event = (MotionEvent)q.mEvent; 3921 3922 if (mView.dispatchPointerEvent(event)) { 3923 return FINISH_HANDLED; 3924 } 3925 return FORWARD; 3926 } 3927 3928 private int processTrackballEvent(QueuedInputEvent q) { 3929 final MotionEvent event = (MotionEvent)q.mEvent; 3930 3931 if (mView.dispatchTrackballEvent(event)) { 3932 return FINISH_HANDLED; 3933 } 3934 return FORWARD; 3935 } 3936 3937 private int processGenericMotionEvent(QueuedInputEvent q) { 3938 final MotionEvent event = (MotionEvent)q.mEvent; 3939 3940 // Deliver the event to the view. 3941 if (mView.dispatchGenericMotionEvent(event)) { 3942 return FINISH_HANDLED; 3943 } 3944 return FORWARD; 3945 } 3946 } 3947 3948 /** 3949 * Performs synthesis of new input events from unhandled input events. 3950 */ 3951 final class SyntheticInputStage extends InputStage { 3952 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3953 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3954 private final SyntheticTouchNavigationHandler mTouchNavigation = 3955 new SyntheticTouchNavigationHandler(); 3956 private final SyntheticKeyHandler mKeys = new SyntheticKeyHandler(); 3957 3958 public SyntheticInputStage() { 3959 super(null); 3960 } 3961 3962 @Override 3963 protected int onProcess(QueuedInputEvent q) { 3964 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3965 if (q.mEvent instanceof MotionEvent) { 3966 final MotionEvent event = (MotionEvent)q.mEvent; 3967 final int source = event.getSource(); 3968 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3969 mTrackball.process(event); 3970 return FINISH_HANDLED; 3971 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3972 mJoystick.process(event); 3973 return FINISH_HANDLED; 3974 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3975 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3976 mTouchNavigation.process(event); 3977 return FINISH_HANDLED; 3978 } 3979 } else if (q.mEvent instanceof KeyEvent) { 3980 if (mKeys.process((KeyEvent) q.mEvent)) { 3981 return FINISH_HANDLED; 3982 } 3983 } 3984 3985 return FORWARD; 3986 } 3987 3988 @Override 3989 protected void onDeliverToNext(QueuedInputEvent q) { 3990 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 3991 // Cancel related synthetic events if any prior stage has handled the event. 3992 if (q.mEvent instanceof MotionEvent) { 3993 final MotionEvent event = (MotionEvent)q.mEvent; 3994 final int source = event.getSource(); 3995 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3996 mTrackball.cancel(event); 3997 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3998 mJoystick.cancel(event); 3999 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4000 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4001 mTouchNavigation.cancel(event); 4002 } 4003 } 4004 } 4005 super.onDeliverToNext(q); 4006 } 4007 } 4008 4009 /** 4010 * Creates dpad events from unhandled trackball movements. 4011 */ 4012 final class SyntheticTrackballHandler { 4013 private final TrackballAxis mX = new TrackballAxis(); 4014 private final TrackballAxis mY = new TrackballAxis(); 4015 private long mLastTime; 4016 4017 public void process(MotionEvent event) { 4018 // Translate the trackball event into DPAD keys and try to deliver those. 4019 long curTime = SystemClock.uptimeMillis(); 4020 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4021 // It has been too long since the last movement, 4022 // so restart at the beginning. 4023 mX.reset(0); 4024 mY.reset(0); 4025 mLastTime = curTime; 4026 } 4027 4028 final int action = event.getAction(); 4029 final int metaState = event.getMetaState(); 4030 switch (action) { 4031 case MotionEvent.ACTION_DOWN: 4032 mX.reset(2); 4033 mY.reset(2); 4034 enqueueInputEvent(new KeyEvent(curTime, curTime, 4035 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4036 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4037 InputDevice.SOURCE_KEYBOARD)); 4038 break; 4039 case MotionEvent.ACTION_UP: 4040 mX.reset(2); 4041 mY.reset(2); 4042 enqueueInputEvent(new KeyEvent(curTime, curTime, 4043 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4044 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4045 InputDevice.SOURCE_KEYBOARD)); 4046 break; 4047 } 4048 4049 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4050 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4051 + " move=" + event.getX() 4052 + " / Y=" + mY.position + " step=" 4053 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4054 + " move=" + event.getY()); 4055 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4056 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4057 4058 // Generate DPAD events based on the trackball movement. 4059 // We pick the axis that has moved the most as the direction of 4060 // the DPAD. When we generate DPAD events for one axis, then the 4061 // other axis is reset -- we don't want to perform DPAD jumps due 4062 // to slight movements in the trackball when making major movements 4063 // along the other axis. 4064 int keycode = 0; 4065 int movement = 0; 4066 float accel = 1; 4067 if (xOff > yOff) { 4068 movement = mX.generate(); 4069 if (movement != 0) { 4070 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4071 : KeyEvent.KEYCODE_DPAD_LEFT; 4072 accel = mX.acceleration; 4073 mY.reset(2); 4074 } 4075 } else if (yOff > 0) { 4076 movement = mY.generate(); 4077 if (movement != 0) { 4078 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4079 : KeyEvent.KEYCODE_DPAD_UP; 4080 accel = mY.acceleration; 4081 mX.reset(2); 4082 } 4083 } 4084 4085 if (keycode != 0) { 4086 if (movement < 0) movement = -movement; 4087 int accelMovement = (int)(movement * accel); 4088 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4089 + " accelMovement=" + accelMovement 4090 + " accel=" + accel); 4091 if (accelMovement > movement) { 4092 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4093 + keycode); 4094 movement--; 4095 int repeatCount = accelMovement - movement; 4096 enqueueInputEvent(new KeyEvent(curTime, curTime, 4097 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4098 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4099 InputDevice.SOURCE_KEYBOARD)); 4100 } 4101 while (movement > 0) { 4102 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4103 + keycode); 4104 movement--; 4105 curTime = SystemClock.uptimeMillis(); 4106 enqueueInputEvent(new KeyEvent(curTime, curTime, 4107 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4108 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4109 InputDevice.SOURCE_KEYBOARD)); 4110 enqueueInputEvent(new KeyEvent(curTime, curTime, 4111 KeyEvent.ACTION_UP, keycode, 0, metaState, 4112 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4113 InputDevice.SOURCE_KEYBOARD)); 4114 } 4115 mLastTime = curTime; 4116 } 4117 } 4118 4119 public void cancel(MotionEvent event) { 4120 mLastTime = Integer.MIN_VALUE; 4121 4122 // If we reach this, we consumed a trackball event. 4123 // Because we will not translate the trackball event into a key event, 4124 // touch mode will not exit, so we exit touch mode here. 4125 if (mView != null && mAdded) { 4126 ensureTouchMode(false); 4127 } 4128 } 4129 } 4130 4131 /** 4132 * Maintains state information for a single trackball axis, generating 4133 * discrete (DPAD) movements based on raw trackball motion. 4134 */ 4135 static final class TrackballAxis { 4136 /** 4137 * The maximum amount of acceleration we will apply. 4138 */ 4139 static final float MAX_ACCELERATION = 20; 4140 4141 /** 4142 * The maximum amount of time (in milliseconds) between events in order 4143 * for us to consider the user to be doing fast trackball movements, 4144 * and thus apply an acceleration. 4145 */ 4146 static final long FAST_MOVE_TIME = 150; 4147 4148 /** 4149 * Scaling factor to the time (in milliseconds) between events to how 4150 * much to multiple/divide the current acceleration. When movement 4151 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4152 * FAST_MOVE_TIME it divides it. 4153 */ 4154 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4155 4156 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4157 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4158 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4159 4160 float position; 4161 float acceleration = 1; 4162 long lastMoveTime = 0; 4163 int step; 4164 int dir; 4165 int nonAccelMovement; 4166 4167 void reset(int _step) { 4168 position = 0; 4169 acceleration = 1; 4170 lastMoveTime = 0; 4171 step = _step; 4172 dir = 0; 4173 } 4174 4175 /** 4176 * Add trackball movement into the state. If the direction of movement 4177 * has been reversed, the state is reset before adding the 4178 * movement (so that you don't have to compensate for any previously 4179 * collected movement before see the result of the movement in the 4180 * new direction). 4181 * 4182 * @return Returns the absolute value of the amount of movement 4183 * collected so far. 4184 */ 4185 float collect(float off, long time, String axis) { 4186 long normTime; 4187 if (off > 0) { 4188 normTime = (long)(off * FAST_MOVE_TIME); 4189 if (dir < 0) { 4190 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4191 position = 0; 4192 step = 0; 4193 acceleration = 1; 4194 lastMoveTime = 0; 4195 } 4196 dir = 1; 4197 } else if (off < 0) { 4198 normTime = (long)((-off) * FAST_MOVE_TIME); 4199 if (dir > 0) { 4200 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4201 position = 0; 4202 step = 0; 4203 acceleration = 1; 4204 lastMoveTime = 0; 4205 } 4206 dir = -1; 4207 } else { 4208 normTime = 0; 4209 } 4210 4211 // The number of milliseconds between each movement that is 4212 // considered "normal" and will not result in any acceleration 4213 // or deceleration, scaled by the offset we have here. 4214 if (normTime > 0) { 4215 long delta = time - lastMoveTime; 4216 lastMoveTime = time; 4217 float acc = acceleration; 4218 if (delta < normTime) { 4219 // The user is scrolling rapidly, so increase acceleration. 4220 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4221 if (scale > 1) acc *= scale; 4222 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4223 + off + " normTime=" + normTime + " delta=" + delta 4224 + " scale=" + scale + " acc=" + acc); 4225 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4226 } else { 4227 // The user is scrolling slowly, so decrease acceleration. 4228 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4229 if (scale > 1) acc /= scale; 4230 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4231 + off + " normTime=" + normTime + " delta=" + delta 4232 + " scale=" + scale + " acc=" + acc); 4233 acceleration = acc > 1 ? acc : 1; 4234 } 4235 } 4236 position += off; 4237 return Math.abs(position); 4238 } 4239 4240 /** 4241 * Generate the number of discrete movement events appropriate for 4242 * the currently collected trackball movement. 4243 * 4244 * @return Returns the number of discrete movements, either positive 4245 * or negative, or 0 if there is not enough trackball movement yet 4246 * for a discrete movement. 4247 */ 4248 int generate() { 4249 int movement = 0; 4250 nonAccelMovement = 0; 4251 do { 4252 final int dir = position >= 0 ? 1 : -1; 4253 switch (step) { 4254 // If we are going to execute the first step, then we want 4255 // to do this as soon as possible instead of waiting for 4256 // a full movement, in order to make things look responsive. 4257 case 0: 4258 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4259 return movement; 4260 } 4261 movement += dir; 4262 nonAccelMovement += dir; 4263 step = 1; 4264 break; 4265 // If we have generated the first movement, then we need 4266 // to wait for the second complete trackball motion before 4267 // generating the second discrete movement. 4268 case 1: 4269 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4270 return movement; 4271 } 4272 movement += dir; 4273 nonAccelMovement += dir; 4274 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4275 step = 2; 4276 break; 4277 // After the first two, we generate discrete movements 4278 // consistently with the trackball, applying an acceleration 4279 // if the trackball is moving quickly. This is a simple 4280 // acceleration on top of what we already compute based 4281 // on how quickly the wheel is being turned, to apply 4282 // a longer increasing acceleration to continuous movement 4283 // in one direction. 4284 default: 4285 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4286 return movement; 4287 } 4288 movement += dir; 4289 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4290 float acc = acceleration; 4291 acc *= 1.1f; 4292 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4293 break; 4294 } 4295 } while (true); 4296 } 4297 } 4298 4299 /** 4300 * Creates dpad events from unhandled joystick movements. 4301 */ 4302 final class SyntheticJoystickHandler extends Handler { 4303 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4304 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4305 4306 private int mLastXDirection; 4307 private int mLastYDirection; 4308 private int mLastXKeyCode; 4309 private int mLastYKeyCode; 4310 4311 public SyntheticJoystickHandler() { 4312 super(true); 4313 } 4314 4315 @Override 4316 public void handleMessage(Message msg) { 4317 switch (msg.what) { 4318 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4319 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4320 KeyEvent oldEvent = (KeyEvent)msg.obj; 4321 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4322 SystemClock.uptimeMillis(), 4323 oldEvent.getRepeatCount() + 1); 4324 if (mAttachInfo.mHasWindowFocus) { 4325 enqueueInputEvent(e); 4326 Message m = obtainMessage(msg.what, e); 4327 m.setAsynchronous(true); 4328 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4329 } 4330 } break; 4331 } 4332 } 4333 4334 public void process(MotionEvent event) { 4335 update(event, true); 4336 } 4337 4338 public void cancel(MotionEvent event) { 4339 update(event, false); 4340 } 4341 4342 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4343 final long time = event.getEventTime(); 4344 final int metaState = event.getMetaState(); 4345 final int deviceId = event.getDeviceId(); 4346 final int source = event.getSource(); 4347 4348 int xDirection = joystickAxisValueToDirection( 4349 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4350 if (xDirection == 0) { 4351 xDirection = joystickAxisValueToDirection(event.getX()); 4352 } 4353 4354 int yDirection = joystickAxisValueToDirection( 4355 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4356 if (yDirection == 0) { 4357 yDirection = joystickAxisValueToDirection(event.getY()); 4358 } 4359 4360 if (xDirection != mLastXDirection) { 4361 if (mLastXKeyCode != 0) { 4362 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4363 enqueueInputEvent(new KeyEvent(time, time, 4364 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4365 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4366 mLastXKeyCode = 0; 4367 } 4368 4369 mLastXDirection = xDirection; 4370 4371 if (xDirection != 0 && synthesizeNewKeys) { 4372 mLastXKeyCode = xDirection > 0 4373 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4374 final KeyEvent e = new KeyEvent(time, time, 4375 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4376 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4377 enqueueInputEvent(e); 4378 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4379 m.setAsynchronous(true); 4380 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4381 } 4382 } 4383 4384 if (yDirection != mLastYDirection) { 4385 if (mLastYKeyCode != 0) { 4386 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4387 enqueueInputEvent(new KeyEvent(time, time, 4388 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4389 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4390 mLastYKeyCode = 0; 4391 } 4392 4393 mLastYDirection = yDirection; 4394 4395 if (yDirection != 0 && synthesizeNewKeys) { 4396 mLastYKeyCode = yDirection > 0 4397 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4398 final KeyEvent e = new KeyEvent(time, time, 4399 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4400 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4401 enqueueInputEvent(e); 4402 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4403 m.setAsynchronous(true); 4404 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4405 } 4406 } 4407 } 4408 4409 private int joystickAxisValueToDirection(float value) { 4410 if (value >= 0.5f) { 4411 return 1; 4412 } else if (value <= -0.5f) { 4413 return -1; 4414 } else { 4415 return 0; 4416 } 4417 } 4418 } 4419 4420 /** 4421 * Creates dpad events from unhandled touch navigation movements. 4422 */ 4423 final class SyntheticTouchNavigationHandler extends Handler { 4424 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4425 private static final boolean LOCAL_DEBUG = false; 4426 4427 // Assumed nominal width and height in millimeters of a touch navigation pad, 4428 // if no resolution information is available from the input system. 4429 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4430 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4431 4432 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4433 4434 // The nominal distance traveled to move by one unit. 4435 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4436 4437 // Minimum and maximum fling velocity in ticks per second. 4438 // The minimum velocity should be set such that we perform enough ticks per 4439 // second that the fling appears to be fluid. For example, if we set the minimum 4440 // to 2 ticks per second, then there may be up to half a second delay between the next 4441 // to last and last ticks which is noticeably discrete and jerky. This value should 4442 // probably not be set to anything less than about 4. 4443 // If fling accuracy is a problem then consider tuning the tick distance instead. 4444 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4445 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4446 4447 // Fling velocity decay factor applied after each new key is emitted. 4448 // This parameter controls the deceleration and overall duration of the fling. 4449 // The fling stops automatically when its velocity drops below the minimum 4450 // fling velocity defined above. 4451 private static final float FLING_TICK_DECAY = 0.8f; 4452 4453 /* The input device that we are tracking. */ 4454 4455 private int mCurrentDeviceId = -1; 4456 private int mCurrentSource; 4457 private boolean mCurrentDeviceSupported; 4458 4459 /* Configuration for the current input device. */ 4460 4461 // The scaled tick distance. A movement of this amount should generally translate 4462 // into a single dpad event in a given direction. 4463 private float mConfigTickDistance; 4464 4465 // The minimum and maximum scaled fling velocity. 4466 private float mConfigMinFlingVelocity; 4467 private float mConfigMaxFlingVelocity; 4468 4469 /* Tracking state. */ 4470 4471 // The velocity tracker for detecting flings. 4472 private VelocityTracker mVelocityTracker; 4473 4474 // The active pointer id, or -1 if none. 4475 private int mActivePointerId = -1; 4476 4477 // Time and location where tracking started. 4478 private long mStartTime; 4479 private float mStartX; 4480 private float mStartY; 4481 4482 // Most recently observed position. 4483 private float mLastX; 4484 private float mLastY; 4485 4486 // Accumulated movement delta since the last direction key was sent. 4487 private float mAccumulatedX; 4488 private float mAccumulatedY; 4489 4490 // Set to true if any movement was delivered to the app. 4491 // Implies that tap slop was exceeded. 4492 private boolean mConsumedMovement; 4493 4494 // The most recently sent key down event. 4495 // The keycode remains set until the direction changes or a fling ends 4496 // so that repeated key events may be generated as required. 4497 private long mPendingKeyDownTime; 4498 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4499 private int mPendingKeyRepeatCount; 4500 private int mPendingKeyMetaState; 4501 4502 // The current fling velocity while a fling is in progress. 4503 private boolean mFlinging; 4504 private float mFlingVelocity; 4505 4506 // The last time a confirm key was pressed on the touch nav device 4507 private long mLastConfirmKeyTime = Long.MAX_VALUE; 4508 4509 public SyntheticTouchNavigationHandler() { 4510 super(true); 4511 } 4512 4513 public void process(MotionEvent event) { 4514 // Update the current device information. 4515 final long time = event.getEventTime(); 4516 final int deviceId = event.getDeviceId(); 4517 final int source = event.getSource(); 4518 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4519 finishKeys(time); 4520 finishTracking(time); 4521 mCurrentDeviceId = deviceId; 4522 mCurrentSource = source; 4523 mCurrentDeviceSupported = false; 4524 InputDevice device = event.getDevice(); 4525 if (device != null) { 4526 // In order to support an input device, we must know certain 4527 // characteristics about it, such as its size and resolution. 4528 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4529 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4530 if (xRange != null && yRange != null) { 4531 mCurrentDeviceSupported = true; 4532 4533 // Infer the resolution if it not actually known. 4534 float xRes = xRange.getResolution(); 4535 if (xRes <= 0) { 4536 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4537 } 4538 float yRes = yRange.getResolution(); 4539 if (yRes <= 0) { 4540 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4541 } 4542 float nominalRes = (xRes + yRes) * 0.5f; 4543 4544 // Precompute all of the configuration thresholds we will need. 4545 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4546 mConfigMinFlingVelocity = 4547 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4548 mConfigMaxFlingVelocity = 4549 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4550 4551 if (LOCAL_DEBUG) { 4552 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4553 + " (" + Integer.toHexString(mCurrentSource) + "): " 4554 + ", mConfigTickDistance=" + mConfigTickDistance 4555 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4556 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4557 } 4558 } 4559 } 4560 } 4561 if (!mCurrentDeviceSupported) { 4562 return; 4563 } 4564 4565 // Handle the event. 4566 final int action = event.getActionMasked(); 4567 switch (action) { 4568 case MotionEvent.ACTION_DOWN: { 4569 boolean caughtFling = mFlinging; 4570 finishKeys(time); 4571 finishTracking(time); 4572 mActivePointerId = event.getPointerId(0); 4573 mVelocityTracker = VelocityTracker.obtain(); 4574 mVelocityTracker.addMovement(event); 4575 mStartTime = time; 4576 mStartX = event.getX(); 4577 mStartY = event.getY(); 4578 mLastX = mStartX; 4579 mLastY = mStartY; 4580 mAccumulatedX = 0; 4581 mAccumulatedY = 0; 4582 4583 // If we caught a fling, then pretend that the tap slop has already 4584 // been exceeded to suppress taps whose only purpose is to stop the fling. 4585 mConsumedMovement = caughtFling; 4586 break; 4587 } 4588 4589 case MotionEvent.ACTION_MOVE: 4590 case MotionEvent.ACTION_UP: { 4591 if (mActivePointerId < 0) { 4592 break; 4593 } 4594 final int index = event.findPointerIndex(mActivePointerId); 4595 if (index < 0) { 4596 finishKeys(time); 4597 finishTracking(time); 4598 break; 4599 } 4600 4601 mVelocityTracker.addMovement(event); 4602 final float x = event.getX(index); 4603 final float y = event.getY(index); 4604 mAccumulatedX += x - mLastX; 4605 mAccumulatedY += y - mLastY; 4606 mLastX = x; 4607 mLastY = y; 4608 4609 // Consume any accumulated movement so far. 4610 final int metaState = event.getMetaState(); 4611 consumeAccumulatedMovement(time, metaState); 4612 4613 // Detect taps and flings. 4614 if (action == MotionEvent.ACTION_UP) { 4615 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4616 // It might be a fling. 4617 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4618 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4619 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4620 if (!startFling(time, vx, vy)) { 4621 finishKeys(time); 4622 } 4623 } 4624 finishTracking(time); 4625 } 4626 break; 4627 } 4628 4629 case MotionEvent.ACTION_CANCEL: { 4630 finishKeys(time); 4631 finishTracking(time); 4632 break; 4633 } 4634 } 4635 } 4636 4637 public void cancel(MotionEvent event) { 4638 if (mCurrentDeviceId == event.getDeviceId() 4639 && mCurrentSource == event.getSource()) { 4640 final long time = event.getEventTime(); 4641 finishKeys(time); 4642 finishTracking(time); 4643 } 4644 } 4645 4646 private void finishKeys(long time) { 4647 cancelFling(); 4648 sendKeyUp(time); 4649 } 4650 4651 private void finishTracking(long time) { 4652 if (mActivePointerId >= 0) { 4653 mActivePointerId = -1; 4654 mVelocityTracker.recycle(); 4655 mVelocityTracker = null; 4656 } 4657 } 4658 4659 private void consumeAccumulatedMovement(long time, int metaState) { 4660 final float absX = Math.abs(mAccumulatedX); 4661 final float absY = Math.abs(mAccumulatedY); 4662 if (absX >= absY) { 4663 if (absX >= mConfigTickDistance) { 4664 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4665 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4666 mAccumulatedY = 0; 4667 mConsumedMovement = true; 4668 } 4669 } else { 4670 if (absY >= mConfigTickDistance) { 4671 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4672 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4673 mAccumulatedX = 0; 4674 mConsumedMovement = true; 4675 } 4676 } 4677 } 4678 4679 private float consumeAccumulatedMovement(long time, int metaState, 4680 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4681 while (accumulator <= -mConfigTickDistance) { 4682 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4683 accumulator += mConfigTickDistance; 4684 } 4685 while (accumulator >= mConfigTickDistance) { 4686 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4687 accumulator -= mConfigTickDistance; 4688 } 4689 return accumulator; 4690 } 4691 4692 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4693 if (mPendingKeyCode != keyCode) { 4694 sendKeyUp(time); 4695 mPendingKeyDownTime = time; 4696 mPendingKeyCode = keyCode; 4697 mPendingKeyRepeatCount = 0; 4698 } else { 4699 mPendingKeyRepeatCount += 1; 4700 } 4701 mPendingKeyMetaState = metaState; 4702 4703 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4704 // but it doesn't quite make sense when simulating the events in this way. 4705 if (LOCAL_DEBUG) { 4706 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4707 + ", repeatCount=" + mPendingKeyRepeatCount 4708 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4709 } 4710 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4711 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4712 mPendingKeyMetaState, mCurrentDeviceId, 4713 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4714 } 4715 4716 private void sendKeyUp(long time) { 4717 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4718 if (LOCAL_DEBUG) { 4719 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4720 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4721 } 4722 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4723 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4724 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4725 mCurrentSource)); 4726 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4727 } 4728 } 4729 4730 private boolean startFling(long time, float vx, float vy) { 4731 if (LOCAL_DEBUG) { 4732 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4733 + ", min=" + mConfigMinFlingVelocity); 4734 } 4735 4736 // Flings must be oriented in the same direction as the preceding movements. 4737 switch (mPendingKeyCode) { 4738 case KeyEvent.KEYCODE_DPAD_LEFT: 4739 if (-vx >= mConfigMinFlingVelocity 4740 && Math.abs(vy) < mConfigMinFlingVelocity) { 4741 mFlingVelocity = -vx; 4742 break; 4743 } 4744 return false; 4745 4746 case KeyEvent.KEYCODE_DPAD_RIGHT: 4747 if (vx >= mConfigMinFlingVelocity 4748 && Math.abs(vy) < mConfigMinFlingVelocity) { 4749 mFlingVelocity = vx; 4750 break; 4751 } 4752 return false; 4753 4754 case KeyEvent.KEYCODE_DPAD_UP: 4755 if (-vy >= mConfigMinFlingVelocity 4756 && Math.abs(vx) < mConfigMinFlingVelocity) { 4757 mFlingVelocity = -vy; 4758 break; 4759 } 4760 return false; 4761 4762 case KeyEvent.KEYCODE_DPAD_DOWN: 4763 if (vy >= mConfigMinFlingVelocity 4764 && Math.abs(vx) < mConfigMinFlingVelocity) { 4765 mFlingVelocity = vy; 4766 break; 4767 } 4768 return false; 4769 } 4770 4771 // Post the first fling event. 4772 mFlinging = postFling(time); 4773 return mFlinging; 4774 } 4775 4776 private boolean postFling(long time) { 4777 // The idea here is to estimate the time when the pointer would have 4778 // traveled one tick distance unit given the current fling velocity. 4779 // This effect creates continuity of motion. 4780 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4781 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4782 postAtTime(mFlingRunnable, time + delay); 4783 if (LOCAL_DEBUG) { 4784 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4785 + mFlingVelocity + ", delay=" + delay 4786 + ", keyCode=" + mPendingKeyCode); 4787 } 4788 return true; 4789 } 4790 return false; 4791 } 4792 4793 private void cancelFling() { 4794 if (mFlinging) { 4795 removeCallbacks(mFlingRunnable); 4796 mFlinging = false; 4797 } 4798 } 4799 4800 private final Runnable mFlingRunnable = new Runnable() { 4801 @Override 4802 public void run() { 4803 final long time = SystemClock.uptimeMillis(); 4804 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4805 mFlingVelocity *= FLING_TICK_DECAY; 4806 if (!postFling(time)) { 4807 mFlinging = false; 4808 finishKeys(time); 4809 } 4810 } 4811 }; 4812 } 4813 4814 final class SyntheticKeyHandler { 4815 4816 public boolean process(KeyEvent event) { 4817 // In some locales (like Japan) controllers use B for confirm and A for back, rather 4818 // than vice versa, so we need to special case this here since the input system itself 4819 // is not locale-aware. 4820 int keyCode; 4821 switch(event.getKeyCode()) { 4822 case KeyEvent.KEYCODE_BUTTON_A: 4823 case KeyEvent.KEYCODE_BUTTON_C: 4824 case KeyEvent.KEYCODE_BUTTON_X: 4825 case KeyEvent.KEYCODE_BUTTON_Z: 4826 keyCode = mFlipControllerFallbackKeys ? 4827 KeyEvent.KEYCODE_BACK : KeyEvent.KEYCODE_DPAD_CENTER; 4828 break; 4829 case KeyEvent.KEYCODE_BUTTON_B: 4830 case KeyEvent.KEYCODE_BUTTON_Y: 4831 keyCode = mFlipControllerFallbackKeys ? 4832 KeyEvent.KEYCODE_DPAD_CENTER : KeyEvent.KEYCODE_BACK; 4833 break; 4834 case KeyEvent.KEYCODE_BUTTON_THUMBL: 4835 case KeyEvent.KEYCODE_BUTTON_THUMBR: 4836 case KeyEvent.KEYCODE_BUTTON_START: 4837 case KeyEvent.KEYCODE_BUTTON_1: 4838 case KeyEvent.KEYCODE_BUTTON_2: 4839 case KeyEvent.KEYCODE_BUTTON_3: 4840 case KeyEvent.KEYCODE_BUTTON_4: 4841 case KeyEvent.KEYCODE_BUTTON_5: 4842 case KeyEvent.KEYCODE_BUTTON_6: 4843 case KeyEvent.KEYCODE_BUTTON_7: 4844 case KeyEvent.KEYCODE_BUTTON_8: 4845 case KeyEvent.KEYCODE_BUTTON_9: 4846 case KeyEvent.KEYCODE_BUTTON_10: 4847 case KeyEvent.KEYCODE_BUTTON_11: 4848 case KeyEvent.KEYCODE_BUTTON_12: 4849 case KeyEvent.KEYCODE_BUTTON_13: 4850 case KeyEvent.KEYCODE_BUTTON_14: 4851 case KeyEvent.KEYCODE_BUTTON_15: 4852 case KeyEvent.KEYCODE_BUTTON_16: 4853 keyCode = KeyEvent.KEYCODE_DPAD_CENTER; 4854 break; 4855 case KeyEvent.KEYCODE_BUTTON_SELECT: 4856 case KeyEvent.KEYCODE_BUTTON_MODE: 4857 keyCode = KeyEvent.KEYCODE_MENU; 4858 default: 4859 return false; 4860 } 4861 4862 enqueueInputEvent(new KeyEvent(event.getDownTime(), event.getEventTime(), 4863 event.getAction(), keyCode, event.getRepeatCount(), event.getMetaState(), 4864 event.getDeviceId(), event.getScanCode(), 4865 event.getFlags() | KeyEvent.FLAG_FALLBACK, event.getSource())); 4866 return true; 4867 } 4868 4869 } 4870 4871 /** 4872 * Returns true if the key is used for keyboard navigation. 4873 * @param keyEvent The key event. 4874 * @return True if the key is used for keyboard navigation. 4875 */ 4876 private static boolean isNavigationKey(KeyEvent keyEvent) { 4877 switch (keyEvent.getKeyCode()) { 4878 case KeyEvent.KEYCODE_DPAD_LEFT: 4879 case KeyEvent.KEYCODE_DPAD_RIGHT: 4880 case KeyEvent.KEYCODE_DPAD_UP: 4881 case KeyEvent.KEYCODE_DPAD_DOWN: 4882 case KeyEvent.KEYCODE_DPAD_CENTER: 4883 case KeyEvent.KEYCODE_PAGE_UP: 4884 case KeyEvent.KEYCODE_PAGE_DOWN: 4885 case KeyEvent.KEYCODE_MOVE_HOME: 4886 case KeyEvent.KEYCODE_MOVE_END: 4887 case KeyEvent.KEYCODE_TAB: 4888 case KeyEvent.KEYCODE_SPACE: 4889 case KeyEvent.KEYCODE_ENTER: 4890 return true; 4891 } 4892 return false; 4893 } 4894 4895 /** 4896 * Returns true if the key is used for typing. 4897 * @param keyEvent The key event. 4898 * @return True if the key is used for typing. 4899 */ 4900 private static boolean isTypingKey(KeyEvent keyEvent) { 4901 return keyEvent.getUnicodeChar() > 0; 4902 } 4903 4904 /** 4905 * See if the key event means we should leave touch mode (and leave touch mode if so). 4906 * @param event The key event. 4907 * @return Whether this key event should be consumed (meaning the act of 4908 * leaving touch mode alone is considered the event). 4909 */ 4910 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4911 // Only relevant in touch mode. 4912 if (!mAttachInfo.mInTouchMode) { 4913 return false; 4914 } 4915 4916 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4917 final int action = event.getAction(); 4918 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4919 return false; 4920 } 4921 4922 // Don't leave touch mode if the IME told us not to. 4923 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4924 return false; 4925 } 4926 4927 // If the key can be used for keyboard navigation then leave touch mode 4928 // and select a focused view if needed (in ensureTouchMode). 4929 // When a new focused view is selected, we consume the navigation key because 4930 // navigation doesn't make much sense unless a view already has focus so 4931 // the key's purpose is to set focus. 4932 if (isNavigationKey(event)) { 4933 return ensureTouchMode(false); 4934 } 4935 4936 // If the key can be used for typing then leave touch mode 4937 // and select a focused view if needed (in ensureTouchMode). 4938 // Always allow the view to process the typing key. 4939 if (isTypingKey(event)) { 4940 ensureTouchMode(false); 4941 return false; 4942 } 4943 4944 return false; 4945 } 4946 4947 /* drag/drop */ 4948 void setLocalDragState(Object obj) { 4949 mLocalDragState = obj; 4950 } 4951 4952 private void handleDragEvent(DragEvent event) { 4953 // From the root, only drag start/end/location are dispatched. entered/exited 4954 // are determined and dispatched by the viewgroup hierarchy, who then report 4955 // that back here for ultimate reporting back to the framework. 4956 if (mView != null && mAdded) { 4957 final int what = event.mAction; 4958 4959 if (what == DragEvent.ACTION_DRAG_EXITED) { 4960 // A direct EXITED event means that the window manager knows we've just crossed 4961 // a window boundary, so the current drag target within this one must have 4962 // just been exited. Send it the usual notifications and then we're done 4963 // for now. 4964 mView.dispatchDragEvent(event); 4965 } else { 4966 // Cache the drag description when the operation starts, then fill it in 4967 // on subsequent calls as a convenience 4968 if (what == DragEvent.ACTION_DRAG_STARTED) { 4969 mCurrentDragView = null; // Start the current-recipient tracking 4970 mDragDescription = event.mClipDescription; 4971 } else { 4972 event.mClipDescription = mDragDescription; 4973 } 4974 4975 // For events with a [screen] location, translate into window coordinates 4976 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4977 mDragPoint.set(event.mX, event.mY); 4978 if (mTranslator != null) { 4979 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4980 } 4981 4982 if (mCurScrollY != 0) { 4983 mDragPoint.offset(0, mCurScrollY); 4984 } 4985 4986 event.mX = mDragPoint.x; 4987 event.mY = mDragPoint.y; 4988 } 4989 4990 // Remember who the current drag target is pre-dispatch 4991 final View prevDragView = mCurrentDragView; 4992 4993 // Now dispatch the drag/drop event 4994 boolean result = mView.dispatchDragEvent(event); 4995 4996 // If we changed apparent drag target, tell the OS about it 4997 if (prevDragView != mCurrentDragView) { 4998 try { 4999 if (prevDragView != null) { 5000 mWindowSession.dragRecipientExited(mWindow); 5001 } 5002 if (mCurrentDragView != null) { 5003 mWindowSession.dragRecipientEntered(mWindow); 5004 } 5005 } catch (RemoteException e) { 5006 Slog.e(TAG, "Unable to note drag target change"); 5007 } 5008 } 5009 5010 // Report the drop result when we're done 5011 if (what == DragEvent.ACTION_DROP) { 5012 mDragDescription = null; 5013 try { 5014 Log.i(TAG, "Reporting drop result: " + result); 5015 mWindowSession.reportDropResult(mWindow, result); 5016 } catch (RemoteException e) { 5017 Log.e(TAG, "Unable to report drop result"); 5018 } 5019 } 5020 5021 // When the drag operation ends, release any local state object 5022 // that may have been in use 5023 if (what == DragEvent.ACTION_DRAG_ENDED) { 5024 setLocalDragState(null); 5025 } 5026 } 5027 } 5028 event.recycle(); 5029 } 5030 5031 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5032 if (mSeq != args.seq) { 5033 // The sequence has changed, so we need to update our value and make 5034 // sure to do a traversal afterward so the window manager is given our 5035 // most recent data. 5036 mSeq = args.seq; 5037 mAttachInfo.mForceReportNewAttributes = true; 5038 scheduleTraversals(); 5039 } 5040 if (mView == null) return; 5041 if (args.localChanges != 0) { 5042 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5043 } 5044 if (mAttachInfo != null) { 5045 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5046 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5047 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5048 mView.dispatchSystemUiVisibilityChanged(visibility); 5049 } 5050 } 5051 } 5052 5053 public void handleDispatchDoneAnimating() { 5054 if (mWindowsAnimating) { 5055 mWindowsAnimating = false; 5056 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5057 scheduleTraversals(); 5058 } 5059 } 5060 } 5061 5062 public void getLastTouchPoint(Point outLocation) { 5063 outLocation.x = (int) mLastTouchPoint.x; 5064 outLocation.y = (int) mLastTouchPoint.y; 5065 } 5066 5067 public void setDragFocus(View newDragTarget) { 5068 if (mCurrentDragView != newDragTarget) { 5069 mCurrentDragView = newDragTarget; 5070 } 5071 } 5072 5073 private AudioManager getAudioManager() { 5074 if (mView == null) { 5075 throw new IllegalStateException("getAudioManager called when there is no mView"); 5076 } 5077 if (mAudioManager == null) { 5078 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5079 } 5080 return mAudioManager; 5081 } 5082 5083 public AccessibilityInteractionController getAccessibilityInteractionController() { 5084 if (mView == null) { 5085 throw new IllegalStateException("getAccessibilityInteractionController" 5086 + " called when there is no mView"); 5087 } 5088 if (mAccessibilityInteractionController == null) { 5089 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5090 } 5091 return mAccessibilityInteractionController; 5092 } 5093 5094 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5095 boolean insetsPending) throws RemoteException { 5096 5097 float appScale = mAttachInfo.mApplicationScale; 5098 boolean restore = false; 5099 if (params != null && mTranslator != null) { 5100 restore = true; 5101 params.backup(); 5102 mTranslator.translateWindowLayout(params); 5103 } 5104 if (params != null) { 5105 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5106 } 5107 mPendingConfiguration.seq = 0; 5108 //Log.d(TAG, ">>>>>> CALLING relayout"); 5109 if (params != null && mOrigWindowType != params.type) { 5110 // For compatibility with old apps, don't crash here. 5111 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5112 Slog.w(TAG, "Window type can not be changed after " 5113 + "the window is added; ignoring change of " + mView); 5114 params.type = mOrigWindowType; 5115 } 5116 } 5117 int relayoutResult = mWindowSession.relayout( 5118 mWindow, mSeq, params, 5119 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5120 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5121 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5122 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5123 mPendingConfiguration, mSurface); 5124 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5125 if (restore) { 5126 params.restore(); 5127 } 5128 5129 if (mTranslator != null) { 5130 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5131 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5132 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5133 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5134 } 5135 return relayoutResult; 5136 } 5137 5138 /** 5139 * {@inheritDoc} 5140 */ 5141 @Override 5142 public void playSoundEffect(int effectId) { 5143 checkThread(); 5144 5145 if (mMediaDisabled) { 5146 return; 5147 } 5148 5149 try { 5150 final AudioManager audioManager = getAudioManager(); 5151 5152 switch (effectId) { 5153 case SoundEffectConstants.CLICK: 5154 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5155 return; 5156 case SoundEffectConstants.NAVIGATION_DOWN: 5157 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5158 return; 5159 case SoundEffectConstants.NAVIGATION_LEFT: 5160 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5161 return; 5162 case SoundEffectConstants.NAVIGATION_RIGHT: 5163 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5164 return; 5165 case SoundEffectConstants.NAVIGATION_UP: 5166 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5167 return; 5168 default: 5169 throw new IllegalArgumentException("unknown effect id " + effectId + 5170 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5171 } 5172 } catch (IllegalStateException e) { 5173 // Exception thrown by getAudioManager() when mView is null 5174 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5175 e.printStackTrace(); 5176 } 5177 } 5178 5179 /** 5180 * {@inheritDoc} 5181 */ 5182 @Override 5183 public boolean performHapticFeedback(int effectId, boolean always) { 5184 try { 5185 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5186 } catch (RemoteException e) { 5187 return false; 5188 } 5189 } 5190 5191 /** 5192 * {@inheritDoc} 5193 */ 5194 @Override 5195 public View focusSearch(View focused, int direction) { 5196 checkThread(); 5197 if (!(mView instanceof ViewGroup)) { 5198 return null; 5199 } 5200 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5201 } 5202 5203 public void debug() { 5204 mView.debug(); 5205 } 5206 5207 public void dumpGfxInfo(int[] info) { 5208 info[0] = info[1] = 0; 5209 if (mView != null) { 5210 getGfxInfo(mView, info); 5211 } 5212 } 5213 5214 private static void getGfxInfo(View view, int[] info) { 5215 DisplayList displayList = view.mDisplayList; 5216 info[0]++; 5217 if (displayList != null) { 5218 info[1] += displayList.getSize(); 5219 } 5220 5221 if (view instanceof ViewGroup) { 5222 ViewGroup group = (ViewGroup) view; 5223 5224 int count = group.getChildCount(); 5225 for (int i = 0; i < count; i++) { 5226 getGfxInfo(group.getChildAt(i), info); 5227 } 5228 } 5229 } 5230 5231 /** 5232 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5233 * @return True, request has been queued. False, request has been completed. 5234 */ 5235 boolean die(boolean immediate) { 5236 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5237 // done by dispatchDetachedFromWindow will cause havoc on return. 5238 if (immediate && !mIsInTraversal) { 5239 doDie(); 5240 return false; 5241 } 5242 5243 if (!mIsDrawing) { 5244 destroyHardwareRenderer(); 5245 } else { 5246 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5247 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5248 } 5249 mHandler.sendEmptyMessage(MSG_DIE); 5250 return true; 5251 } 5252 5253 void doDie() { 5254 checkThread(); 5255 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5256 synchronized (this) { 5257 if (mRemoved) { 5258 return; 5259 } 5260 mRemoved = true; 5261 if (mAdded) { 5262 dispatchDetachedFromWindow(); 5263 } 5264 5265 if (mAdded && !mFirst) { 5266 invalidateDisplayLists(); 5267 destroyHardwareRenderer(); 5268 5269 if (mView != null) { 5270 int viewVisibility = mView.getVisibility(); 5271 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5272 if (mWindowAttributesChanged || viewVisibilityChanged) { 5273 // If layout params have been changed, first give them 5274 // to the window manager to make sure it has the correct 5275 // animation info. 5276 try { 5277 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5278 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5279 mWindowSession.finishDrawing(mWindow); 5280 } 5281 } catch (RemoteException e) { 5282 } 5283 } 5284 5285 mSurface.release(); 5286 } 5287 } 5288 5289 mAdded = false; 5290 } 5291 WindowManagerGlobal.getInstance().doRemoveView(this); 5292 } 5293 5294 public void requestUpdateConfiguration(Configuration config) { 5295 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5296 mHandler.sendMessage(msg); 5297 } 5298 5299 public void loadSystemProperties() { 5300 mHandler.post(new Runnable() { 5301 @Override 5302 public void run() { 5303 // Profiling 5304 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5305 profileRendering(mAttachInfo.mHasWindowFocus); 5306 5307 // Media (used by sound effects) 5308 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5309 5310 // Hardware rendering 5311 if (mAttachInfo.mHardwareRenderer != null) { 5312 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5313 invalidate(); 5314 } 5315 } 5316 5317 // Layout debugging 5318 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5319 if (layout != mAttachInfo.mDebugLayout) { 5320 mAttachInfo.mDebugLayout = layout; 5321 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5322 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5323 } 5324 } 5325 } 5326 }); 5327 } 5328 5329 private void destroyHardwareRenderer() { 5330 AttachInfo attachInfo = mAttachInfo; 5331 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5332 5333 if (hardwareRenderer != null) { 5334 if (mView != null) { 5335 hardwareRenderer.destroyHardwareResources(mView); 5336 } 5337 hardwareRenderer.destroy(true); 5338 hardwareRenderer.setRequested(false); 5339 5340 attachInfo.mHardwareRenderer = null; 5341 attachInfo.mHardwareAccelerated = false; 5342 } 5343 } 5344 5345 public void dispatchFinishInputConnection(InputConnection connection) { 5346 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5347 mHandler.sendMessage(msg); 5348 } 5349 5350 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5351 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5352 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5353 + " contentInsets=" + contentInsets.toShortString() 5354 + " visibleInsets=" + visibleInsets.toShortString() 5355 + " reportDraw=" + reportDraw); 5356 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5357 if (mTranslator != null) { 5358 mTranslator.translateRectInScreenToAppWindow(frame); 5359 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5360 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5361 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5362 } 5363 SomeArgs args = SomeArgs.obtain(); 5364 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5365 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5366 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5367 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5368 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5369 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5370 msg.obj = args; 5371 mHandler.sendMessage(msg); 5372 } 5373 5374 public void dispatchMoved(int newX, int newY) { 5375 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5376 if (mTranslator != null) { 5377 PointF point = new PointF(newX, newY); 5378 mTranslator.translatePointInScreenToAppWindow(point); 5379 newX = (int) (point.x + 0.5); 5380 newY = (int) (point.y + 0.5); 5381 } 5382 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5383 mHandler.sendMessage(msg); 5384 } 5385 5386 /** 5387 * Represents a pending input event that is waiting in a queue. 5388 * 5389 * Input events are processed in serial order by the timestamp specified by 5390 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5391 * one input event to the application at a time and waits for the application 5392 * to finish handling it before delivering the next one. 5393 * 5394 * However, because the application or IME can synthesize and inject multiple 5395 * key events at a time without going through the input dispatcher, we end up 5396 * needing a queue on the application's side. 5397 */ 5398 private static final class QueuedInputEvent { 5399 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5400 public static final int FLAG_DEFERRED = 1 << 1; 5401 public static final int FLAG_FINISHED = 1 << 2; 5402 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5403 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5404 5405 public QueuedInputEvent mNext; 5406 5407 public InputEvent mEvent; 5408 public InputEventReceiver mReceiver; 5409 public int mFlags; 5410 5411 public boolean shouldSkipIme() { 5412 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5413 return true; 5414 } 5415 return mEvent instanceof MotionEvent 5416 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5417 } 5418 } 5419 5420 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5421 InputEventReceiver receiver, int flags) { 5422 QueuedInputEvent q = mQueuedInputEventPool; 5423 if (q != null) { 5424 mQueuedInputEventPoolSize -= 1; 5425 mQueuedInputEventPool = q.mNext; 5426 q.mNext = null; 5427 } else { 5428 q = new QueuedInputEvent(); 5429 } 5430 5431 q.mEvent = event; 5432 q.mReceiver = receiver; 5433 q.mFlags = flags; 5434 return q; 5435 } 5436 5437 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5438 q.mEvent = null; 5439 q.mReceiver = null; 5440 5441 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5442 mQueuedInputEventPoolSize += 1; 5443 q.mNext = mQueuedInputEventPool; 5444 mQueuedInputEventPool = q; 5445 } 5446 } 5447 5448 void enqueueInputEvent(InputEvent event) { 5449 enqueueInputEvent(event, null, 0, false); 5450 } 5451 5452 void enqueueInputEvent(InputEvent event, 5453 InputEventReceiver receiver, int flags, boolean processImmediately) { 5454 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5455 5456 // Always enqueue the input event in order, regardless of its time stamp. 5457 // We do this because the application or the IME may inject key events 5458 // in response to touch events and we want to ensure that the injected keys 5459 // are processed in the order they were received and we cannot trust that 5460 // the time stamp of injected events are monotonic. 5461 QueuedInputEvent last = mPendingInputEventTail; 5462 if (last == null) { 5463 mPendingInputEventHead = q; 5464 mPendingInputEventTail = q; 5465 } else { 5466 last.mNext = q; 5467 mPendingInputEventTail = q; 5468 } 5469 mPendingInputEventCount += 1; 5470 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5471 mPendingInputEventCount); 5472 5473 if (processImmediately) { 5474 doProcessInputEvents(); 5475 } else { 5476 scheduleProcessInputEvents(); 5477 } 5478 } 5479 5480 private void scheduleProcessInputEvents() { 5481 if (!mProcessInputEventsScheduled) { 5482 mProcessInputEventsScheduled = true; 5483 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5484 msg.setAsynchronous(true); 5485 mHandler.sendMessage(msg); 5486 } 5487 } 5488 5489 void doProcessInputEvents() { 5490 // Deliver all pending input events in the queue. 5491 while (mPendingInputEventHead != null) { 5492 QueuedInputEvent q = mPendingInputEventHead; 5493 mPendingInputEventHead = q.mNext; 5494 if (mPendingInputEventHead == null) { 5495 mPendingInputEventTail = null; 5496 } 5497 q.mNext = null; 5498 5499 mPendingInputEventCount -= 1; 5500 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5501 mPendingInputEventCount); 5502 5503 deliverInputEvent(q); 5504 } 5505 5506 // We are done processing all input events that we can process right now 5507 // so we can clear the pending flag immediately. 5508 if (mProcessInputEventsScheduled) { 5509 mProcessInputEventsScheduled = false; 5510 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5511 } 5512 } 5513 5514 private void deliverInputEvent(QueuedInputEvent q) { 5515 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5516 try { 5517 if (mInputEventConsistencyVerifier != null) { 5518 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5519 } 5520 5521 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5522 if (stage != null) { 5523 stage.deliver(q); 5524 } else { 5525 finishInputEvent(q); 5526 } 5527 } finally { 5528 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5529 } 5530 } 5531 5532 private void finishInputEvent(QueuedInputEvent q) { 5533 if (q.mReceiver != null) { 5534 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5535 q.mReceiver.finishInputEvent(q.mEvent, handled); 5536 } else { 5537 q.mEvent.recycleIfNeededAfterDispatch(); 5538 } 5539 5540 recycleQueuedInputEvent(q); 5541 } 5542 5543 static boolean isTerminalInputEvent(InputEvent event) { 5544 if (event instanceof KeyEvent) { 5545 final KeyEvent keyEvent = (KeyEvent)event; 5546 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5547 } else { 5548 final MotionEvent motionEvent = (MotionEvent)event; 5549 final int action = motionEvent.getAction(); 5550 return action == MotionEvent.ACTION_UP 5551 || action == MotionEvent.ACTION_CANCEL 5552 || action == MotionEvent.ACTION_HOVER_EXIT; 5553 } 5554 } 5555 5556 void scheduleConsumeBatchedInput() { 5557 if (!mConsumeBatchedInputScheduled) { 5558 mConsumeBatchedInputScheduled = true; 5559 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5560 mConsumedBatchedInputRunnable, null); 5561 } 5562 } 5563 5564 void unscheduleConsumeBatchedInput() { 5565 if (mConsumeBatchedInputScheduled) { 5566 mConsumeBatchedInputScheduled = false; 5567 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5568 mConsumedBatchedInputRunnable, null); 5569 } 5570 } 5571 5572 void doConsumeBatchedInput(long frameTimeNanos) { 5573 if (mConsumeBatchedInputScheduled) { 5574 mConsumeBatchedInputScheduled = false; 5575 if (mInputEventReceiver != null) { 5576 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5577 } 5578 doProcessInputEvents(); 5579 } 5580 } 5581 5582 final class TraversalRunnable implements Runnable { 5583 @Override 5584 public void run() { 5585 doTraversal(); 5586 } 5587 } 5588 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5589 5590 final class WindowInputEventReceiver extends InputEventReceiver { 5591 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5592 super(inputChannel, looper); 5593 } 5594 5595 @Override 5596 public void onInputEvent(InputEvent event) { 5597 enqueueInputEvent(event, this, 0, true); 5598 } 5599 5600 @Override 5601 public void onBatchedInputEventPending() { 5602 scheduleConsumeBatchedInput(); 5603 } 5604 5605 @Override 5606 public void dispose() { 5607 unscheduleConsumeBatchedInput(); 5608 super.dispose(); 5609 } 5610 } 5611 WindowInputEventReceiver mInputEventReceiver; 5612 5613 final class ConsumeBatchedInputRunnable implements Runnable { 5614 @Override 5615 public void run() { 5616 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5617 } 5618 } 5619 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5620 new ConsumeBatchedInputRunnable(); 5621 boolean mConsumeBatchedInputScheduled; 5622 5623 final class InvalidateOnAnimationRunnable implements Runnable { 5624 private boolean mPosted; 5625 private final ArrayList<View> mViews = new ArrayList<View>(); 5626 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5627 new ArrayList<AttachInfo.InvalidateInfo>(); 5628 private View[] mTempViews; 5629 private AttachInfo.InvalidateInfo[] mTempViewRects; 5630 5631 public void addView(View view) { 5632 synchronized (this) { 5633 mViews.add(view); 5634 postIfNeededLocked(); 5635 } 5636 } 5637 5638 public void addViewRect(AttachInfo.InvalidateInfo info) { 5639 synchronized (this) { 5640 mViewRects.add(info); 5641 postIfNeededLocked(); 5642 } 5643 } 5644 5645 public void removeView(View view) { 5646 synchronized (this) { 5647 mViews.remove(view); 5648 5649 for (int i = mViewRects.size(); i-- > 0; ) { 5650 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5651 if (info.target == view) { 5652 mViewRects.remove(i); 5653 info.recycle(); 5654 } 5655 } 5656 5657 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5658 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5659 mPosted = false; 5660 } 5661 } 5662 } 5663 5664 @Override 5665 public void run() { 5666 final int viewCount; 5667 final int viewRectCount; 5668 synchronized (this) { 5669 mPosted = false; 5670 5671 viewCount = mViews.size(); 5672 if (viewCount != 0) { 5673 mTempViews = mViews.toArray(mTempViews != null 5674 ? mTempViews : new View[viewCount]); 5675 mViews.clear(); 5676 } 5677 5678 viewRectCount = mViewRects.size(); 5679 if (viewRectCount != 0) { 5680 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5681 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5682 mViewRects.clear(); 5683 } 5684 } 5685 5686 for (int i = 0; i < viewCount; i++) { 5687 mTempViews[i].invalidate(); 5688 mTempViews[i] = null; 5689 } 5690 5691 for (int i = 0; i < viewRectCount; i++) { 5692 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5693 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5694 info.recycle(); 5695 } 5696 } 5697 5698 private void postIfNeededLocked() { 5699 if (!mPosted) { 5700 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5701 mPosted = true; 5702 } 5703 } 5704 } 5705 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5706 new InvalidateOnAnimationRunnable(); 5707 5708 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5709 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5710 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5711 } 5712 5713 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5714 long delayMilliseconds) { 5715 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5716 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5717 } 5718 5719 public void dispatchInvalidateOnAnimation(View view) { 5720 mInvalidateOnAnimationRunnable.addView(view); 5721 } 5722 5723 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5724 mInvalidateOnAnimationRunnable.addViewRect(info); 5725 } 5726 5727 public void enqueueDisplayList(DisplayList displayList) { 5728 mDisplayLists.add(displayList); 5729 } 5730 5731 public void cancelInvalidate(View view) { 5732 mHandler.removeMessages(MSG_INVALIDATE, view); 5733 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5734 // them to the pool 5735 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5736 mInvalidateOnAnimationRunnable.removeView(view); 5737 } 5738 5739 public void dispatchInputEvent(InputEvent event) { 5740 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, event); 5741 msg.setAsynchronous(true); 5742 mHandler.sendMessage(msg); 5743 } 5744 5745 public void dispatchKeyFromIme(KeyEvent event) { 5746 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5747 msg.setAsynchronous(true); 5748 mHandler.sendMessage(msg); 5749 } 5750 5751 public void dispatchUnhandledKey(KeyEvent event) { 5752 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5753 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5754 final int keyCode = event.getKeyCode(); 5755 final int metaState = event.getMetaState(); 5756 5757 // Check for fallback actions specified by the key character map. 5758 KeyCharacterMap.FallbackAction fallbackAction = 5759 kcm.getFallbackAction(keyCode, metaState); 5760 if (fallbackAction != null) { 5761 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5762 KeyEvent fallbackEvent = KeyEvent.obtain( 5763 event.getDownTime(), event.getEventTime(), 5764 event.getAction(), fallbackAction.keyCode, 5765 event.getRepeatCount(), fallbackAction.metaState, 5766 event.getDeviceId(), event.getScanCode(), 5767 flags, event.getSource(), null); 5768 fallbackAction.recycle(); 5769 5770 dispatchInputEvent(fallbackEvent); 5771 } 5772 } 5773 } 5774 5775 public void dispatchAppVisibility(boolean visible) { 5776 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5777 msg.arg1 = visible ? 1 : 0; 5778 mHandler.sendMessage(msg); 5779 } 5780 5781 public void dispatchScreenStateChange(boolean on) { 5782 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5783 msg.arg1 = on ? 1 : 0; 5784 mHandler.sendMessage(msg); 5785 } 5786 5787 public void dispatchGetNewSurface() { 5788 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5789 mHandler.sendMessage(msg); 5790 } 5791 5792 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5793 Message msg = Message.obtain(); 5794 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5795 msg.arg1 = hasFocus ? 1 : 0; 5796 msg.arg2 = inTouchMode ? 1 : 0; 5797 mHandler.sendMessage(msg); 5798 } 5799 5800 public void dispatchCloseSystemDialogs(String reason) { 5801 Message msg = Message.obtain(); 5802 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5803 msg.obj = reason; 5804 mHandler.sendMessage(msg); 5805 } 5806 5807 public void dispatchDragEvent(DragEvent event) { 5808 final int what; 5809 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5810 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5811 mHandler.removeMessages(what); 5812 } else { 5813 what = MSG_DISPATCH_DRAG_EVENT; 5814 } 5815 Message msg = mHandler.obtainMessage(what, event); 5816 mHandler.sendMessage(msg); 5817 } 5818 5819 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5820 int localValue, int localChanges) { 5821 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5822 args.seq = seq; 5823 args.globalVisibility = globalVisibility; 5824 args.localValue = localValue; 5825 args.localChanges = localChanges; 5826 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5827 } 5828 5829 public void dispatchDoneAnimating() { 5830 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5831 } 5832 5833 public void dispatchCheckFocus() { 5834 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5835 // This will result in a call to checkFocus() below. 5836 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5837 } 5838 } 5839 5840 /** 5841 * Post a callback to send a 5842 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5843 * This event is send at most once every 5844 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5845 */ 5846 private void postSendWindowContentChangedCallback(View source, int changeType) { 5847 if (mSendWindowContentChangedAccessibilityEvent == null) { 5848 mSendWindowContentChangedAccessibilityEvent = 5849 new SendWindowContentChangedAccessibilityEvent(); 5850 } 5851 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 5852 } 5853 5854 /** 5855 * Remove a posted callback to send a 5856 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5857 */ 5858 private void removeSendWindowContentChangedCallback() { 5859 if (mSendWindowContentChangedAccessibilityEvent != null) { 5860 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5861 } 5862 } 5863 5864 @Override 5865 public boolean showContextMenuForChild(View originalView) { 5866 return false; 5867 } 5868 5869 @Override 5870 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5871 return null; 5872 } 5873 5874 @Override 5875 public void createContextMenu(ContextMenu menu) { 5876 } 5877 5878 @Override 5879 public void childDrawableStateChanged(View child) { 5880 } 5881 5882 @Override 5883 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5884 if (mView == null) { 5885 return false; 5886 } 5887 // Intercept accessibility focus events fired by virtual nodes to keep 5888 // track of accessibility focus position in such nodes. 5889 final int eventType = event.getEventType(); 5890 switch (eventType) { 5891 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5892 final long sourceNodeId = event.getSourceNodeId(); 5893 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5894 sourceNodeId); 5895 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5896 if (source != null) { 5897 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5898 if (provider != null) { 5899 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5900 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5901 setAccessibilityFocus(source, node); 5902 } 5903 } 5904 } break; 5905 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5906 final long sourceNodeId = event.getSourceNodeId(); 5907 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5908 sourceNodeId); 5909 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5910 if (source != null) { 5911 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5912 if (provider != null) { 5913 setAccessibilityFocus(null, null); 5914 } 5915 } 5916 } break; 5917 } 5918 mAccessibilityManager.sendAccessibilityEvent(event); 5919 return true; 5920 } 5921 5922 @Override 5923 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 5924 postSendWindowContentChangedCallback(source, changeType); 5925 } 5926 5927 @Override 5928 public boolean canResolveLayoutDirection() { 5929 return true; 5930 } 5931 5932 @Override 5933 public boolean isLayoutDirectionResolved() { 5934 return true; 5935 } 5936 5937 @Override 5938 public int getLayoutDirection() { 5939 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5940 } 5941 5942 @Override 5943 public boolean canResolveTextDirection() { 5944 return true; 5945 } 5946 5947 @Override 5948 public boolean isTextDirectionResolved() { 5949 return true; 5950 } 5951 5952 @Override 5953 public int getTextDirection() { 5954 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5955 } 5956 5957 @Override 5958 public boolean canResolveTextAlignment() { 5959 return true; 5960 } 5961 5962 @Override 5963 public boolean isTextAlignmentResolved() { 5964 return true; 5965 } 5966 5967 @Override 5968 public int getTextAlignment() { 5969 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5970 } 5971 5972 private View getCommonPredecessor(View first, View second) { 5973 if (mAttachInfo != null) { 5974 if (mTempHashSet == null) { 5975 mTempHashSet = new HashSet<View>(); 5976 } 5977 HashSet<View> seen = mTempHashSet; 5978 seen.clear(); 5979 View firstCurrent = first; 5980 while (firstCurrent != null) { 5981 seen.add(firstCurrent); 5982 ViewParent firstCurrentParent = firstCurrent.mParent; 5983 if (firstCurrentParent instanceof View) { 5984 firstCurrent = (View) firstCurrentParent; 5985 } else { 5986 firstCurrent = null; 5987 } 5988 } 5989 View secondCurrent = second; 5990 while (secondCurrent != null) { 5991 if (seen.contains(secondCurrent)) { 5992 seen.clear(); 5993 return secondCurrent; 5994 } 5995 ViewParent secondCurrentParent = secondCurrent.mParent; 5996 if (secondCurrentParent instanceof View) { 5997 secondCurrent = (View) secondCurrentParent; 5998 } else { 5999 secondCurrent = null; 6000 } 6001 } 6002 seen.clear(); 6003 } 6004 return null; 6005 } 6006 6007 void checkThread() { 6008 if (mThread != Thread.currentThread()) { 6009 throw new CalledFromWrongThreadException( 6010 "Only the original thread that created a view hierarchy can touch its views."); 6011 } 6012 } 6013 6014 @Override 6015 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6016 // ViewAncestor never intercepts touch event, so this can be a no-op 6017 } 6018 6019 @Override 6020 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6021 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6022 if (rectangle != null) { 6023 mTempRect.set(rectangle); 6024 mTempRect.offset(0, -mCurScrollY); 6025 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6026 try { 6027 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 6028 } catch (RemoteException re) { 6029 /* ignore */ 6030 } 6031 } 6032 return scrolled; 6033 } 6034 6035 @Override 6036 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6037 // Do nothing. 6038 } 6039 6040 void changeCanvasOpacity(boolean opaque) { 6041 // TODO(romainguy): recreate Canvas (software or hardware) to reflect the opacity change. 6042 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6043 } 6044 6045 class TakenSurfaceHolder extends BaseSurfaceHolder { 6046 @Override 6047 public boolean onAllowLockCanvas() { 6048 return mDrawingAllowed; 6049 } 6050 6051 @Override 6052 public void onRelayoutContainer() { 6053 // Not currently interesting -- from changing between fixed and layout size. 6054 } 6055 6056 @Override 6057 public void setFormat(int format) { 6058 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6059 } 6060 6061 @Override 6062 public void setType(int type) { 6063 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6064 } 6065 6066 @Override 6067 public void onUpdateSurface() { 6068 // We take care of format and type changes on our own. 6069 throw new IllegalStateException("Shouldn't be here"); 6070 } 6071 6072 @Override 6073 public boolean isCreating() { 6074 return mIsCreating; 6075 } 6076 6077 @Override 6078 public void setFixedSize(int width, int height) { 6079 throw new UnsupportedOperationException( 6080 "Currently only support sizing from layout"); 6081 } 6082 6083 @Override 6084 public void setKeepScreenOn(boolean screenOn) { 6085 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6086 } 6087 } 6088 6089 static class W extends IWindow.Stub { 6090 private final WeakReference<ViewRootImpl> mViewAncestor; 6091 private final IWindowSession mWindowSession; 6092 6093 W(ViewRootImpl viewAncestor) { 6094 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6095 mWindowSession = viewAncestor.mWindowSession; 6096 } 6097 6098 @Override 6099 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6100 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6101 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6102 if (viewAncestor != null) { 6103 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6104 visibleInsets, reportDraw, newConfig); 6105 } 6106 } 6107 6108 @Override 6109 public void moved(int newX, int newY) { 6110 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6111 if (viewAncestor != null) { 6112 viewAncestor.dispatchMoved(newX, newY); 6113 } 6114 } 6115 6116 @Override 6117 public void dispatchAppVisibility(boolean visible) { 6118 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6119 if (viewAncestor != null) { 6120 viewAncestor.dispatchAppVisibility(visible); 6121 } 6122 } 6123 6124 @Override 6125 public void dispatchScreenState(boolean on) { 6126 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6127 if (viewAncestor != null) { 6128 viewAncestor.dispatchScreenStateChange(on); 6129 } 6130 } 6131 6132 @Override 6133 public void dispatchGetNewSurface() { 6134 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6135 if (viewAncestor != null) { 6136 viewAncestor.dispatchGetNewSurface(); 6137 } 6138 } 6139 6140 @Override 6141 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6142 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6143 if (viewAncestor != null) { 6144 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6145 } 6146 } 6147 6148 private static int checkCallingPermission(String permission) { 6149 try { 6150 return ActivityManagerNative.getDefault().checkPermission( 6151 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6152 } catch (RemoteException e) { 6153 return PackageManager.PERMISSION_DENIED; 6154 } 6155 } 6156 6157 @Override 6158 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6159 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6160 if (viewAncestor != null) { 6161 final View view = viewAncestor.mView; 6162 if (view != null) { 6163 if (checkCallingPermission(Manifest.permission.DUMP) != 6164 PackageManager.PERMISSION_GRANTED) { 6165 throw new SecurityException("Insufficient permissions to invoke" 6166 + " executeCommand() from pid=" + Binder.getCallingPid() 6167 + ", uid=" + Binder.getCallingUid()); 6168 } 6169 6170 OutputStream clientStream = null; 6171 try { 6172 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6173 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6174 } catch (IOException e) { 6175 e.printStackTrace(); 6176 } finally { 6177 if (clientStream != null) { 6178 try { 6179 clientStream.close(); 6180 } catch (IOException e) { 6181 e.printStackTrace(); 6182 } 6183 } 6184 } 6185 } 6186 } 6187 } 6188 6189 @Override 6190 public void closeSystemDialogs(String reason) { 6191 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6192 if (viewAncestor != null) { 6193 viewAncestor.dispatchCloseSystemDialogs(reason); 6194 } 6195 } 6196 6197 @Override 6198 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6199 boolean sync) { 6200 if (sync) { 6201 try { 6202 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6203 } catch (RemoteException e) { 6204 } 6205 } 6206 } 6207 6208 @Override 6209 public void dispatchWallpaperCommand(String action, int x, int y, 6210 int z, Bundle extras, boolean sync) { 6211 if (sync) { 6212 try { 6213 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6214 } catch (RemoteException e) { 6215 } 6216 } 6217 } 6218 6219 /* Drag/drop */ 6220 @Override 6221 public void dispatchDragEvent(DragEvent event) { 6222 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6223 if (viewAncestor != null) { 6224 viewAncestor.dispatchDragEvent(event); 6225 } 6226 } 6227 6228 @Override 6229 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6230 int localValue, int localChanges) { 6231 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6232 if (viewAncestor != null) { 6233 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6234 localValue, localChanges); 6235 } 6236 } 6237 6238 @Override 6239 public void doneAnimating() { 6240 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6241 if (viewAncestor != null) { 6242 viewAncestor.dispatchDoneAnimating(); 6243 } 6244 } 6245 } 6246 6247 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6248 public CalledFromWrongThreadException(String msg) { 6249 super(msg); 6250 } 6251 } 6252 6253 private final SurfaceHolder mHolder = new SurfaceHolder() { 6254 // we only need a SurfaceHolder for opengl. it would be nice 6255 // to implement everything else though, especially the callback 6256 // support (opengl doesn't make use of it right now, but eventually 6257 // will). 6258 @Override 6259 public Surface getSurface() { 6260 return mSurface; 6261 } 6262 6263 @Override 6264 public boolean isCreating() { 6265 return false; 6266 } 6267 6268 @Override 6269 public void addCallback(Callback callback) { 6270 } 6271 6272 @Override 6273 public void removeCallback(Callback callback) { 6274 } 6275 6276 @Override 6277 public void setFixedSize(int width, int height) { 6278 } 6279 6280 @Override 6281 public void setSizeFromLayout() { 6282 } 6283 6284 @Override 6285 public void setFormat(int format) { 6286 } 6287 6288 @Override 6289 public void setType(int type) { 6290 } 6291 6292 @Override 6293 public void setKeepScreenOn(boolean screenOn) { 6294 } 6295 6296 @Override 6297 public Canvas lockCanvas() { 6298 return null; 6299 } 6300 6301 @Override 6302 public Canvas lockCanvas(Rect dirty) { 6303 return null; 6304 } 6305 6306 @Override 6307 public void unlockCanvasAndPost(Canvas canvas) { 6308 } 6309 @Override 6310 public Rect getSurfaceFrame() { 6311 return null; 6312 } 6313 }; 6314 6315 static RunQueue getRunQueue() { 6316 RunQueue rq = sRunQueues.get(); 6317 if (rq != null) { 6318 return rq; 6319 } 6320 rq = new RunQueue(); 6321 sRunQueues.set(rq); 6322 return rq; 6323 } 6324 6325 /** 6326 * The run queue is used to enqueue pending work from Views when no Handler is 6327 * attached. The work is executed during the next call to performTraversals on 6328 * the thread. 6329 * @hide 6330 */ 6331 static final class RunQueue { 6332 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6333 6334 void post(Runnable action) { 6335 postDelayed(action, 0); 6336 } 6337 6338 void postDelayed(Runnable action, long delayMillis) { 6339 HandlerAction handlerAction = new HandlerAction(); 6340 handlerAction.action = action; 6341 handlerAction.delay = delayMillis; 6342 6343 synchronized (mActions) { 6344 mActions.add(handlerAction); 6345 } 6346 } 6347 6348 void removeCallbacks(Runnable action) { 6349 final HandlerAction handlerAction = new HandlerAction(); 6350 handlerAction.action = action; 6351 6352 synchronized (mActions) { 6353 final ArrayList<HandlerAction> actions = mActions; 6354 6355 while (actions.remove(handlerAction)) { 6356 // Keep going 6357 } 6358 } 6359 } 6360 6361 void executeActions(Handler handler) { 6362 synchronized (mActions) { 6363 final ArrayList<HandlerAction> actions = mActions; 6364 final int count = actions.size(); 6365 6366 for (int i = 0; i < count; i++) { 6367 final HandlerAction handlerAction = actions.get(i); 6368 handler.postDelayed(handlerAction.action, handlerAction.delay); 6369 } 6370 6371 actions.clear(); 6372 } 6373 } 6374 6375 private static class HandlerAction { 6376 Runnable action; 6377 long delay; 6378 6379 @Override 6380 public boolean equals(Object o) { 6381 if (this == o) return true; 6382 if (o == null || getClass() != o.getClass()) return false; 6383 6384 HandlerAction that = (HandlerAction) o; 6385 return !(action != null ? !action.equals(that.action) : that.action != null); 6386 6387 } 6388 6389 @Override 6390 public int hashCode() { 6391 int result = action != null ? action.hashCode() : 0; 6392 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6393 return result; 6394 } 6395 } 6396 } 6397 6398 /** 6399 * Class for managing the accessibility interaction connection 6400 * based on the global accessibility state. 6401 */ 6402 final class AccessibilityInteractionConnectionManager 6403 implements AccessibilityStateChangeListener { 6404 @Override 6405 public void onAccessibilityStateChanged(boolean enabled) { 6406 if (enabled) { 6407 ensureConnection(); 6408 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6409 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6410 View focusedView = mView.findFocus(); 6411 if (focusedView != null && focusedView != mView) { 6412 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6413 } 6414 } 6415 } else { 6416 ensureNoConnection(); 6417 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6418 } 6419 } 6420 6421 public void ensureConnection() { 6422 if (mAttachInfo != null) { 6423 final boolean registered = 6424 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6425 if (!registered) { 6426 mAttachInfo.mAccessibilityWindowId = 6427 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6428 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6429 } 6430 } 6431 } 6432 6433 public void ensureNoConnection() { 6434 final boolean registered = 6435 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6436 if (registered) { 6437 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6438 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6439 } 6440 } 6441 } 6442 6443 /** 6444 * This class is an interface this ViewAncestor provides to the 6445 * AccessibilityManagerService to the latter can interact with 6446 * the view hierarchy in this ViewAncestor. 6447 */ 6448 static final class AccessibilityInteractionConnection 6449 extends IAccessibilityInteractionConnection.Stub { 6450 private final WeakReference<ViewRootImpl> mViewRootImpl; 6451 6452 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6453 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6454 } 6455 6456 @Override 6457 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6458 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6459 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6460 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6461 if (viewRootImpl != null && viewRootImpl.mView != null) { 6462 viewRootImpl.getAccessibilityInteractionController() 6463 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6464 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6465 spec); 6466 } else { 6467 // We cannot make the call and notify the caller so it does not wait. 6468 try { 6469 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6470 } catch (RemoteException re) { 6471 /* best effort - ignore */ 6472 } 6473 } 6474 } 6475 6476 @Override 6477 public void performAccessibilityAction(long accessibilityNodeId, int action, 6478 Bundle arguments, int interactionId, 6479 IAccessibilityInteractionConnectionCallback callback, int flags, 6480 int interogatingPid, long interrogatingTid) { 6481 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6482 if (viewRootImpl != null && viewRootImpl.mView != null) { 6483 viewRootImpl.getAccessibilityInteractionController() 6484 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6485 interactionId, callback, flags, interogatingPid, interrogatingTid); 6486 } else { 6487 // We cannot make the call and notify the caller so it does not wait. 6488 try { 6489 callback.setPerformAccessibilityActionResult(false, interactionId); 6490 } catch (RemoteException re) { 6491 /* best effort - ignore */ 6492 } 6493 } 6494 } 6495 6496 @Override 6497 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6498 String viewId, int interactionId, 6499 IAccessibilityInteractionConnectionCallback callback, int flags, 6500 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6501 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6502 if (viewRootImpl != null && viewRootImpl.mView != null) { 6503 viewRootImpl.getAccessibilityInteractionController() 6504 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6505 viewId, interactionId, callback, flags, interrogatingPid, 6506 interrogatingTid, spec); 6507 } else { 6508 // We cannot make the call and notify the caller so it does not wait. 6509 try { 6510 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6511 } catch (RemoteException re) { 6512 /* best effort - ignore */ 6513 } 6514 } 6515 } 6516 6517 @Override 6518 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6519 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6520 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6521 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6522 if (viewRootImpl != null && viewRootImpl.mView != null) { 6523 viewRootImpl.getAccessibilityInteractionController() 6524 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6525 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6526 spec); 6527 } else { 6528 // We cannot make the call and notify the caller so it does not wait. 6529 try { 6530 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6531 } catch (RemoteException re) { 6532 /* best effort - ignore */ 6533 } 6534 } 6535 } 6536 6537 @Override 6538 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6539 IAccessibilityInteractionConnectionCallback callback, int flags, 6540 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6541 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6542 if (viewRootImpl != null && viewRootImpl.mView != null) { 6543 viewRootImpl.getAccessibilityInteractionController() 6544 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6545 flags, interrogatingPid, interrogatingTid, spec); 6546 } else { 6547 // We cannot make the call and notify the caller so it does not wait. 6548 try { 6549 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6550 } catch (RemoteException re) { 6551 /* best effort - ignore */ 6552 } 6553 } 6554 } 6555 6556 @Override 6557 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6558 IAccessibilityInteractionConnectionCallback callback, int flags, 6559 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6560 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6561 if (viewRootImpl != null && viewRootImpl.mView != null) { 6562 viewRootImpl.getAccessibilityInteractionController() 6563 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6564 callback, flags, interrogatingPid, interrogatingTid, spec); 6565 } else { 6566 // We cannot make the call and notify the caller so it does not wait. 6567 try { 6568 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6569 } catch (RemoteException re) { 6570 /* best effort - ignore */ 6571 } 6572 } 6573 } 6574 } 6575 6576 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6577 private int mChangeTypes = 0; 6578 6579 public View mSource; 6580 public long mLastEventTimeMillis; 6581 6582 @Override 6583 public void run() { 6584 // The accessibility may be turned off while we were waiting so check again. 6585 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6586 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6587 AccessibilityEvent event = AccessibilityEvent.obtain(); 6588 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6589 event.setContentChangeTypes(mChangeTypes); 6590 mSource.sendAccessibilityEventUnchecked(event); 6591 } else { 6592 mLastEventTimeMillis = 0; 6593 } 6594 // In any case reset to initial state. 6595 mSource.resetSubtreeAccessibilityStateChanged(); 6596 mSource = null; 6597 mChangeTypes = 0; 6598 } 6599 6600 public void runOrPost(View source, int changeType) { 6601 if (mSource != null) { 6602 // If there is no common predecessor, then mSource points to 6603 // a removed view, hence in this case always prefer the source. 6604 View predecessor = getCommonPredecessor(mSource, source); 6605 mSource = (predecessor != null) ? predecessor : source; 6606 mChangeTypes |= changeType; 6607 return; 6608 } 6609 mSource = source; 6610 mChangeTypes = changeType; 6611 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6612 final long minEventIntevalMillis = 6613 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6614 if (timeSinceLastMillis >= minEventIntevalMillis) { 6615 mSource.removeCallbacks(this); 6616 run(); 6617 } else { 6618 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6619 } 6620 } 6621 } 6622} 6623