ViewRootImpl.java revision 239a0c0e6a6fc36025fdb1c662e1c7acaec144bb
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.ApplicationInfo; 27import android.content.pm.PackageManager; 28import android.content.res.CompatibilityInfo; 29import android.content.res.Configuration; 30import android.content.res.Resources; 31import android.graphics.Canvas; 32import android.graphics.Paint; 33import android.graphics.PixelFormat; 34import android.graphics.Point; 35import android.graphics.PointF; 36import android.graphics.PorterDuff; 37import android.graphics.Rect; 38import android.graphics.Region; 39import android.graphics.drawable.Drawable; 40import android.media.AudioManager; 41import android.os.Binder; 42import android.os.Bundle; 43import android.os.Debug; 44import android.os.Handler; 45import android.os.Looper; 46import android.os.Message; 47import android.os.ParcelFileDescriptor; 48import android.os.PowerManager; 49import android.os.Process; 50import android.os.RemoteException; 51import android.os.SystemClock; 52import android.os.SystemProperties; 53import android.os.Trace; 54import android.util.AndroidRuntimeException; 55import android.util.DisplayMetrics; 56import android.util.Log; 57import android.util.Slog; 58import android.util.TypedValue; 59import android.view.View.AttachInfo; 60import android.view.View.MeasureSpec; 61import android.view.accessibility.AccessibilityEvent; 62import android.view.accessibility.AccessibilityManager; 63import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 64import android.view.accessibility.AccessibilityNodeInfo; 65import android.view.accessibility.AccessibilityNodeProvider; 66import android.view.accessibility.IAccessibilityInteractionConnection; 67import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 68import android.view.animation.AccelerateDecelerateInterpolator; 69import android.view.animation.Interpolator; 70import android.view.inputmethod.InputConnection; 71import android.view.inputmethod.InputMethodManager; 72import android.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 private static final boolean USE_RENDER_THREAD = false; 112 113 /** 114 * Set this system property to true to force the view hierarchy to render 115 * at 60 Hz. This can be used to measure the potential framerate. 116 */ 117 private static final String PROPERTY_PROFILE_RENDERING = "viewancestor.profile_rendering"; 118 119 /** 120 * Maximum time we allow the user to roll the trackball enough to generate 121 * a key event, before resetting the counters. 122 */ 123 static final int MAX_TRACKBALL_DELAY = 250; 124 125 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 126 127 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 128 static boolean sFirstDrawComplete = false; 129 130 static final ArrayList<ComponentCallbacks> sConfigCallbacks 131 = new ArrayList<ComponentCallbacks>(); 132 133 private static boolean sUseRenderThread = false; 134 private static boolean sRenderThreadQueried = false; 135 private static final Object[] sRenderThreadQueryLock = new Object[0]; 136 137 final Context mContext; 138 final IWindowSession mWindowSession; 139 final Display mDisplay; 140 final String mBasePackageName; 141 142 final int[] mTmpLocation = new int[2]; 143 144 final TypedValue mTmpValue = new TypedValue(); 145 146 final Thread mThread; 147 148 final WindowLeaked mLocation; 149 150 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 151 152 final W mWindow; 153 154 final int mTargetSdkVersion; 155 156 int mSeq; 157 158 View mView; 159 160 View mAccessibilityFocusedHost; 161 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 162 163 int mViewVisibility; 164 boolean mAppVisible = true; 165 int mOrigWindowType = -1; 166 167 // Set to true if the owner of this window is in the stopped state, 168 // so the window should no longer be active. 169 boolean mStopped = false; 170 171 boolean mLastInCompatMode = false; 172 173 SurfaceHolder.Callback2 mSurfaceHolderCallback; 174 BaseSurfaceHolder mSurfaceHolder; 175 boolean mIsCreating; 176 boolean mDrawingAllowed; 177 178 final Region mTransparentRegion; 179 final Region mPreviousTransparentRegion; 180 181 int mWidth; 182 int mHeight; 183 Rect mDirty; 184 final Rect mCurrentDirty = new Rect(); 185 boolean mIsAnimating; 186 187 CompatibilityInfo.Translator mTranslator; 188 189 final View.AttachInfo mAttachInfo; 190 InputChannel mInputChannel; 191 InputQueue.Callback mInputQueueCallback; 192 InputQueue mInputQueue; 193 FallbackEventHandler mFallbackEventHandler; 194 Choreographer mChoreographer; 195 196 final Rect mTempRect; // used in the transaction to not thrash the heap. 197 final Rect mVisRect; // used to retrieve visible rect of focused view. 198 199 boolean mTraversalScheduled; 200 int mTraversalBarrier; 201 boolean mWillDrawSoon; 202 /** Set to true while in performTraversals for detecting when die(true) is called from internal 203 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 204 boolean mIsInTraversal; 205 boolean mFitSystemWindowsRequested; 206 boolean mLayoutRequested; 207 boolean mFirst; 208 boolean mReportNextDraw; 209 boolean mFullRedrawNeeded; 210 boolean mNewSurfaceNeeded; 211 boolean mHasHadWindowFocus; 212 boolean mLastWasImTarget; 213 boolean mWindowsAnimating; 214 boolean mIsDrawing; 215 int mLastSystemUiVisibility; 216 int mClientWindowLayoutFlags; 217 boolean mLastOverscanRequested; 218 219 // Pool of queued input events. 220 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 221 private QueuedInputEvent mQueuedInputEventPool; 222 private int mQueuedInputEventPoolSize; 223 224 /* Input event queue. 225 * Pending input events are input events waiting to be delivered to the input stages 226 * and handled by the application. 227 */ 228 QueuedInputEvent mPendingInputEventHead; 229 QueuedInputEvent mPendingInputEventTail; 230 int mPendingInputEventCount; 231 boolean mProcessInputEventsScheduled; 232 String mPendingInputEventQueueLengthCounterName = "pq"; 233 234 InputStage mFirstInputStage; 235 InputStage mFirstPostImeInputStage; 236 237 boolean mWindowAttributesChanged = false; 238 int mWindowAttributesChangesFlag = 0; 239 240 // These can be accessed by any thread, must be protected with a lock. 241 // Surface can never be reassigned or cleared (use Surface.clear()). 242 private final Surface mSurface = new Surface(); 243 244 boolean mAdded; 245 boolean mAddedTouchMode; 246 247 final CompatibilityInfoHolder mCompatibilityInfo; 248 249 // These are accessed by multiple threads. 250 final Rect mWinFrame; // frame given by window manager. 251 252 final Rect mPendingOverscanInsets = new Rect(); 253 final Rect mPendingVisibleInsets = new Rect(); 254 final Rect mPendingContentInsets = new Rect(); 255 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 256 = new ViewTreeObserver.InternalInsetsInfo(); 257 258 final Rect mFitSystemWindowsInsets = new Rect(); 259 260 final Configuration mLastConfiguration = new Configuration(); 261 final Configuration mPendingConfiguration = new Configuration(); 262 263 boolean mScrollMayChange; 264 int mSoftInputMode; 265 WeakReference<View> mLastScrolledFocus; 266 int mScrollY; 267 int mCurScrollY; 268 Scroller mScroller; 269 HardwareLayer mResizeBuffer; 270 long mResizeBufferStartTime; 271 int mResizeBufferDuration; 272 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 273 private ArrayList<LayoutTransition> mPendingTransitions; 274 275 final ViewConfiguration mViewConfiguration; 276 277 /* Drag/drop */ 278 ClipDescription mDragDescription; 279 View mCurrentDragView; 280 volatile Object mLocalDragState; 281 final PointF mDragPoint = new PointF(); 282 final PointF mLastTouchPoint = new PointF(); 283 284 private boolean mProfileRendering; 285 private Choreographer.FrameCallback mRenderProfiler; 286 private boolean mRenderProfilingEnabled; 287 288 // 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 /** 320 * Consistency verifier for debugging purposes. 321 */ 322 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 323 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 324 new InputEventConsistencyVerifier(this, 0) : null; 325 326 static final class SystemUiVisibilityInfo { 327 int seq; 328 int globalVisibility; 329 int localValue; 330 int localChanges; 331 } 332 333 public ViewRootImpl(Context context, Display display) { 334 mContext = context; 335 mWindowSession = WindowManagerGlobal.getWindowSession(); 336 mDisplay = display; 337 mBasePackageName = context.getBasePackageName(); 338 339 CompatibilityInfoHolder cih = display.getCompatibilityInfo(); 340 mCompatibilityInfo = cih != null ? cih : new CompatibilityInfoHolder(); 341 342 mThread = Thread.currentThread(); 343 mLocation = new WindowLeaked(null); 344 mLocation.fillInStackTrace(); 345 mWidth = -1; 346 mHeight = -1; 347 mDirty = new Rect(); 348 mTempRect = new Rect(); 349 mVisRect = new Rect(); 350 mWinFrame = new Rect(); 351 mWindow = new W(this); 352 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 353 mViewVisibility = View.GONE; 354 mTransparentRegion = new Region(); 355 mPreviousTransparentRegion = new Region(); 356 mFirst = true; // true for the first time the view is added 357 mAdded = false; 358 mAccessibilityManager = AccessibilityManager.getInstance(context); 359 mAccessibilityInteractionConnectionManager = 360 new AccessibilityInteractionConnectionManager(); 361 mAccessibilityManager.addAccessibilityStateChangeListener( 362 mAccessibilityInteractionConnectionManager); 363 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 364 mViewConfiguration = ViewConfiguration.get(context); 365 mDensity = context.getResources().getDisplayMetrics().densityDpi; 366 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 367 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 368 mChoreographer = Choreographer.getInstance(); 369 370 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 371 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 372 loadSystemProperties(); 373 } 374 375 /** 376 * @return True if the application requests the use of a separate render thread, 377 * false otherwise 378 */ 379 private static boolean isRenderThreadRequested(Context context) { 380 if (USE_RENDER_THREAD) { 381 synchronized (sRenderThreadQueryLock) { 382 if (!sRenderThreadQueried) { 383 final PackageManager packageManager = context.getPackageManager(); 384 final String packageName = context.getApplicationInfo().packageName; 385 try { 386 ApplicationInfo applicationInfo = packageManager.getApplicationInfo(packageName, 387 PackageManager.GET_META_DATA); 388 if (applicationInfo.metaData != null) { 389 sUseRenderThread = applicationInfo.metaData.getBoolean( 390 "android.graphics.renderThread", false); 391 } 392 } catch (PackageManager.NameNotFoundException e) { 393 } finally { 394 sRenderThreadQueried = true; 395 } 396 } 397 return sUseRenderThread; 398 } 399 } else { 400 return false; 401 } 402 } 403 404 public static void addFirstDrawHandler(Runnable callback) { 405 synchronized (sFirstDrawHandlers) { 406 if (!sFirstDrawComplete) { 407 sFirstDrawHandlers.add(callback); 408 } 409 } 410 } 411 412 public static void addConfigCallback(ComponentCallbacks callback) { 413 synchronized (sConfigCallbacks) { 414 sConfigCallbacks.add(callback); 415 } 416 } 417 418 // FIXME for perf testing only 419 private boolean mProfile = false; 420 421 /** 422 * Call this to profile the next traversal call. 423 * FIXME for perf testing only. Remove eventually 424 */ 425 public void profile() { 426 mProfile = true; 427 } 428 429 /** 430 * Indicates whether we are in touch mode. Calling this method triggers an IPC 431 * call and should be avoided whenever possible. 432 * 433 * @return True, if the device is in touch mode, false otherwise. 434 * 435 * @hide 436 */ 437 static boolean isInTouchMode() { 438 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 439 if (windowSession != null) { 440 try { 441 return windowSession.getInTouchMode(); 442 } catch (RemoteException e) { 443 } 444 } 445 return false; 446 } 447 448 /** 449 * We have one child 450 */ 451 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 452 synchronized (this) { 453 if (mView == null) { 454 mView = view; 455 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 456 mFallbackEventHandler.setView(view); 457 mWindowAttributes.copyFrom(attrs); 458 if (mWindowAttributes.packageName == null) { 459 mWindowAttributes.packageName = mBasePackageName; 460 } 461 attrs = mWindowAttributes; 462 // Keep track of the actual window flags supplied by the client. 463 mClientWindowLayoutFlags = attrs.flags; 464 465 setAccessibilityFocus(null, null); 466 467 if (view instanceof RootViewSurfaceTaker) { 468 mSurfaceHolderCallback = 469 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 470 if (mSurfaceHolderCallback != null) { 471 mSurfaceHolder = new TakenSurfaceHolder(); 472 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 473 } 474 } 475 476 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 477 mTranslator = compatibilityInfo.getTranslator(); 478 479 // If the application owns the surface, don't enable hardware acceleration 480 if (mSurfaceHolder == null) { 481 enableHardwareAcceleration(mView.getContext(), attrs); 482 } 483 484 boolean restore = false; 485 if (mTranslator != null) { 486 mSurface.setCompatibilityTranslator(mTranslator); 487 restore = true; 488 attrs.backup(); 489 mTranslator.translateWindowLayout(attrs); 490 } 491 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 492 493 if (!compatibilityInfo.supportsScreen()) { 494 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 495 mLastInCompatMode = true; 496 } 497 498 mSoftInputMode = attrs.softInputMode; 499 mWindowAttributesChanged = true; 500 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 501 mAttachInfo.mRootView = view; 502 mAttachInfo.mScalingRequired = mTranslator != null; 503 mAttachInfo.mApplicationScale = 504 mTranslator == null ? 1.0f : mTranslator.applicationScale; 505 if (panelParentView != null) { 506 mAttachInfo.mPanelParentWindowToken 507 = panelParentView.getApplicationWindowToken(); 508 } 509 mAdded = true; 510 int res; /* = WindowManagerImpl.ADD_OKAY; */ 511 512 // Schedule the first layout -before- adding to the window 513 // manager, to make sure we do the relayout before receiving 514 // any other events from the system. 515 requestLayout(); 516 if ((mWindowAttributes.inputFeatures 517 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 518 mInputChannel = new InputChannel(); 519 } 520 try { 521 mOrigWindowType = mWindowAttributes.type; 522 mAttachInfo.mRecomputeGlobalAttributes = true; 523 collectViewAttributes(); 524 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 525 getHostVisibility(), mDisplay.getDisplayId(), 526 mAttachInfo.mContentInsets, mInputChannel); 527 } catch (RemoteException e) { 528 mAdded = false; 529 mView = null; 530 mAttachInfo.mRootView = null; 531 mInputChannel = null; 532 mFallbackEventHandler.setView(null); 533 unscheduleTraversals(); 534 setAccessibilityFocus(null, null); 535 throw new RuntimeException("Adding window failed", e); 536 } finally { 537 if (restore) { 538 attrs.restore(); 539 } 540 } 541 542 if (mTranslator != null) { 543 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 544 } 545 mPendingOverscanInsets.set(0, 0, 0, 0); 546 mPendingContentInsets.set(mAttachInfo.mContentInsets); 547 mPendingVisibleInsets.set(0, 0, 0, 0); 548 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 549 if (res < WindowManagerGlobal.ADD_OKAY) { 550 mAttachInfo.mRootView = null; 551 mAdded = false; 552 mFallbackEventHandler.setView(null); 553 unscheduleTraversals(); 554 setAccessibilityFocus(null, null); 555 switch (res) { 556 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 557 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 558 throw new WindowManager.BadTokenException( 559 "Unable to add window -- token " + attrs.token 560 + " is not valid; is your activity running?"); 561 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 562 throw new WindowManager.BadTokenException( 563 "Unable to add window -- token " + attrs.token 564 + " is not for an application"); 565 case WindowManagerGlobal.ADD_APP_EXITING: 566 throw new WindowManager.BadTokenException( 567 "Unable to add window -- app for token " + attrs.token 568 + " is exiting"); 569 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 570 throw new WindowManager.BadTokenException( 571 "Unable to add window -- window " + mWindow 572 + " has already been added"); 573 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 574 // Silently ignore -- we would have just removed it 575 // right away, anyway. 576 return; 577 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 578 throw new WindowManager.BadTokenException( 579 "Unable to add window " + mWindow + 580 " -- another window of this type already exists"); 581 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 582 throw new WindowManager.BadTokenException( 583 "Unable to add window " + mWindow + 584 " -- permission denied for this window type"); 585 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 586 throw new WindowManager.InvalidDisplayException( 587 "Unable to add window " + mWindow + 588 " -- the specified display can not be found"); 589 } 590 throw new RuntimeException( 591 "Unable to add window -- unknown error code " + res); 592 } 593 594 if (view instanceof RootViewSurfaceTaker) { 595 mInputQueueCallback = 596 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 597 } 598 if (mInputChannel != null) { 599 if (mInputQueueCallback != null) { 600 mInputQueue = new InputQueue(); 601 mInputQueueCallback.onInputQueueCreated(mInputQueue); 602 } 603 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 604 Looper.myLooper()); 605 } 606 607 view.assignParent(this); 608 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 609 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 610 611 if (mAccessibilityManager.isEnabled()) { 612 mAccessibilityInteractionConnectionManager.ensureConnection(); 613 } 614 615 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 616 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 617 } 618 619 // Set up the input pipeline. 620 CharSequence counterSuffix = attrs.getTitle(); 621 InputStage syntheticStage = new SyntheticInputStage(); 622 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticStage); 623 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 624 "aq:native-post-ime:" + counterSuffix); 625 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 626 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 627 "aq:ime:" + counterSuffix); 628 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 629 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 630 "aq:native-pre-ime:" + counterSuffix); 631 632 mFirstInputStage = nativePreImeStage; 633 mFirstPostImeInputStage = earlyPostImeStage; 634 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 635 } 636 } 637 } 638 639 void destroyHardwareResources() { 640 if (mAttachInfo.mHardwareRenderer != null) { 641 if (mAttachInfo.mHardwareRenderer.isEnabled()) { 642 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 643 } 644 mAttachInfo.mHardwareRenderer.destroy(false); 645 } 646 } 647 648 void terminateHardwareResources() { 649 if (mAttachInfo.mHardwareRenderer != null) { 650 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 651 mAttachInfo.mHardwareRenderer.destroy(false); 652 } 653 } 654 655 void destroyHardwareLayers() { 656 if (mThread != Thread.currentThread()) { 657 if (mAttachInfo.mHardwareRenderer != null && 658 mAttachInfo.mHardwareRenderer.isEnabled()) { 659 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 660 } 661 } else { 662 if (mAttachInfo.mHardwareRenderer != null && 663 mAttachInfo.mHardwareRenderer.isEnabled()) { 664 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 665 } 666 } 667 } 668 669 void pushHardwareLayerUpdate(HardwareLayer layer) { 670 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 671 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 672 } 673 } 674 675 public boolean attachFunctor(int functor) { 676 //noinspection SimplifiableIfStatement 677 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 678 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 679 } 680 return false; 681 } 682 683 public void detachFunctor(int functor) { 684 if (mAttachInfo.mHardwareRenderer != null) { 685 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 686 } 687 } 688 689 private void enableHardwareAcceleration(Context context, WindowManager.LayoutParams attrs) { 690 mAttachInfo.mHardwareAccelerated = false; 691 mAttachInfo.mHardwareAccelerationRequested = false; 692 693 // Don't enable hardware acceleration when the application is in compatibility mode 694 if (mTranslator != null) return; 695 696 // Try to enable hardware acceleration if requested 697 final boolean hardwareAccelerated = 698 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 699 700 if (hardwareAccelerated) { 701 if (!HardwareRenderer.isAvailable()) { 702 return; 703 } 704 705 // Persistent processes (including the system) should not do 706 // accelerated rendering on low-end devices. In that case, 707 // sRendererDisabled will be set. In addition, the system process 708 // itself should never do accelerated rendering. In that case, both 709 // sRendererDisabled and sSystemRendererDisabled are set. When 710 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 711 // can be used by code on the system process to escape that and enable 712 // HW accelerated drawing. (This is basically for the lock screen.) 713 714 final boolean fakeHwAccelerated = (attrs.privateFlags & 715 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 716 final boolean forceHwAccelerated = (attrs.privateFlags & 717 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 718 719 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 720 && forceHwAccelerated)) { 721 // Don't enable hardware acceleration when we're not on the main thread 722 if (!HardwareRenderer.sSystemRendererDisabled && 723 Looper.getMainLooper() != Looper.myLooper()) { 724 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 725 + "acceleration outside of the main thread, aborting"); 726 return; 727 } 728 729 final boolean renderThread = isRenderThreadRequested(context); 730 if (renderThread) { 731 Log.i(HardwareRenderer.LOG_TAG, "Render threat initiated"); 732 } 733 734 if (mAttachInfo.mHardwareRenderer != null) { 735 mAttachInfo.mHardwareRenderer.destroy(true); 736 } 737 738 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 739 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 740 if (mAttachInfo.mHardwareRenderer != null) { 741 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 742 mAttachInfo.mHardwareAccelerated = 743 mAttachInfo.mHardwareAccelerationRequested = true; 744 } 745 } else if (fakeHwAccelerated) { 746 // The window had wanted to use hardware acceleration, but this 747 // is not allowed in its process. By setting this flag, it can 748 // still render as if it was accelerated. This is basically for 749 // the preview windows the window manager shows for launching 750 // applications, so they will look more like the app being launched. 751 mAttachInfo.mHardwareAccelerationRequested = true; 752 } 753 } 754 } 755 756 public View getView() { 757 return mView; 758 } 759 760 final WindowLeaked getLocation() { 761 return mLocation; 762 } 763 764 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 765 synchronized (this) { 766 int oldSoftInputMode = mWindowAttributes.softInputMode; 767 // Keep track of the actual window flags supplied by the client. 768 mClientWindowLayoutFlags = attrs.flags; 769 // preserve compatible window flag if exists. 770 int compatibleWindowFlag = 771 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 772 // transfer over system UI visibility values as they carry current state. 773 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 774 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 775 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 776 if (mWindowAttributes.packageName == null) { 777 mWindowAttributes.packageName = mBasePackageName; 778 } 779 mWindowAttributes.flags |= compatibleWindowFlag; 780 781 applyKeepScreenOnFlag(mWindowAttributes); 782 783 if (newView) { 784 mSoftInputMode = attrs.softInputMode; 785 requestLayout(); 786 } 787 // Don't lose the mode we last auto-computed. 788 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 789 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 790 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 791 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 792 | (oldSoftInputMode 793 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 794 } 795 mWindowAttributesChanged = true; 796 scheduleTraversals(); 797 } 798 } 799 800 void handleAppVisibility(boolean visible) { 801 if (mAppVisible != visible) { 802 mAppVisible = visible; 803 scheduleTraversals(); 804 } 805 } 806 807 void handleGetNewSurface() { 808 mNewSurfaceNeeded = true; 809 mFullRedrawNeeded = true; 810 scheduleTraversals(); 811 } 812 813 void handleScreenStateChange(boolean on) { 814 if (on != mAttachInfo.mScreenOn) { 815 mAttachInfo.mScreenOn = on; 816 if (mView != null) { 817 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 818 } 819 if (on) { 820 mFullRedrawNeeded = true; 821 scheduleTraversals(); 822 } 823 } 824 } 825 826 @Override 827 public void requestFitSystemWindows() { 828 checkThread(); 829 mFitSystemWindowsRequested = true; 830 scheduleTraversals(); 831 } 832 833 @Override 834 public void requestLayout() { 835 if (!mHandlingLayoutInLayoutRequest) { 836 checkThread(); 837 mLayoutRequested = true; 838 scheduleTraversals(); 839 } 840 } 841 842 @Override 843 public boolean isLayoutRequested() { 844 return mLayoutRequested; 845 } 846 847 void invalidate() { 848 mDirty.set(0, 0, mWidth, mHeight); 849 scheduleTraversals(); 850 } 851 852 void invalidateWorld(View view) { 853 view.invalidate(); 854 if (view instanceof ViewGroup) { 855 ViewGroup parent = (ViewGroup) view; 856 for (int i = 0; i < parent.getChildCount(); i++) { 857 invalidateWorld(parent.getChildAt(i)); 858 } 859 } 860 } 861 862 @Override 863 public void invalidateChild(View child, Rect dirty) { 864 invalidateChildInParent(null, dirty); 865 } 866 867 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 868 checkThread(); 869 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 870 871 if (dirty == null) { 872 invalidate(); 873 return null; 874 } else if (dirty.isEmpty() && !mIsAnimating) { 875 return null; 876 } 877 878 if (mCurScrollY != 0 || mTranslator != null) { 879 mTempRect.set(dirty); 880 dirty = mTempRect; 881 if (mCurScrollY != 0) { 882 dirty.offset(0, -mCurScrollY); 883 } 884 if (mTranslator != null) { 885 mTranslator.translateRectInAppWindowToScreen(dirty); 886 } 887 if (mAttachInfo.mScalingRequired) { 888 dirty.inset(-1, -1); 889 } 890 } 891 892 final Rect localDirty = mDirty; 893 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 894 mAttachInfo.mSetIgnoreDirtyState = true; 895 mAttachInfo.mIgnoreDirtyState = true; 896 } 897 898 // Add the new dirty rect to the current one 899 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 900 // Intersect with the bounds of the window to skip 901 // updates that lie outside of the visible region 902 final float appScale = mAttachInfo.mApplicationScale; 903 final boolean intersected = localDirty.intersect(0, 0, 904 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 905 if (!intersected) { 906 localDirty.setEmpty(); 907 } 908 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 909 scheduleTraversals(); 910 } 911 912 return null; 913 } 914 915 void setStopped(boolean stopped) { 916 if (mStopped != stopped) { 917 mStopped = stopped; 918 if (!stopped) { 919 scheduleTraversals(); 920 } 921 } 922 } 923 924 public ViewParent getParent() { 925 return null; 926 } 927 928 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 929 if (child != mView) { 930 throw new RuntimeException("child is not mine, honest!"); 931 } 932 // Note: don't apply scroll offset, because we want to know its 933 // visibility in the virtual canvas being given to the view hierarchy. 934 return r.intersect(0, 0, mWidth, mHeight); 935 } 936 937 public void bringChildToFront(View child) { 938 } 939 940 int getHostVisibility() { 941 return mAppVisible ? mView.getVisibility() : View.GONE; 942 } 943 944 void disposeResizeBuffer() { 945 if (mResizeBuffer != null) { 946 mResizeBuffer.destroy(); 947 mResizeBuffer = null; 948 } 949 } 950 951 /** 952 * Add LayoutTransition to the list of transitions to be started in the next traversal. 953 * This list will be cleared after the transitions on the list are start()'ed. These 954 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 955 * happens during the layout phase of traversal, which we want to complete before any of the 956 * animations are started (because those animations may side-effect properties that layout 957 * depends upon, like the bounding rectangles of the affected views). So we add the transition 958 * to the list and it is started just prior to starting the drawing phase of traversal. 959 * 960 * @param transition The LayoutTransition to be started on the next traversal. 961 * 962 * @hide 963 */ 964 public void requestTransitionStart(LayoutTransition transition) { 965 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 966 if (mPendingTransitions == null) { 967 mPendingTransitions = new ArrayList<LayoutTransition>(); 968 } 969 mPendingTransitions.add(transition); 970 } 971 } 972 973 void scheduleTraversals() { 974 if (!mTraversalScheduled) { 975 mTraversalScheduled = true; 976 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 977 mChoreographer.postCallback( 978 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 979 scheduleConsumeBatchedInput(); 980 } 981 } 982 983 void unscheduleTraversals() { 984 if (mTraversalScheduled) { 985 mTraversalScheduled = false; 986 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 987 mChoreographer.removeCallbacks( 988 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 989 } 990 } 991 992 void doTraversal() { 993 if (mTraversalScheduled) { 994 mTraversalScheduled = false; 995 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 996 997 if (mProfile) { 998 Debug.startMethodTracing("ViewAncestor"); 999 } 1000 1001 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 1002 try { 1003 performTraversals(); 1004 } finally { 1005 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1006 } 1007 1008 if (mProfile) { 1009 Debug.stopMethodTracing(); 1010 mProfile = false; 1011 } 1012 } 1013 } 1014 1015 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1016 // Update window's global keep screen on flag: if a view has requested 1017 // that the screen be kept on, then it is always set; otherwise, it is 1018 // set to whatever the client last requested for the global state. 1019 if (mAttachInfo.mKeepScreenOn) { 1020 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1021 } else { 1022 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1023 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1024 } 1025 } 1026 1027 private boolean collectViewAttributes() { 1028 final View.AttachInfo attachInfo = mAttachInfo; 1029 if (attachInfo.mRecomputeGlobalAttributes) { 1030 //Log.i(TAG, "Computing view hierarchy attributes!"); 1031 attachInfo.mRecomputeGlobalAttributes = false; 1032 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1033 attachInfo.mKeepScreenOn = false; 1034 attachInfo.mSystemUiVisibility = 0; 1035 attachInfo.mHasSystemUiListeners = false; 1036 mView.dispatchCollectViewAttributes(attachInfo, 0); 1037 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1038 WindowManager.LayoutParams params = mWindowAttributes; 1039 if (attachInfo.mKeepScreenOn != oldScreenOn 1040 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1041 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1042 applyKeepScreenOnFlag(params); 1043 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1044 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1045 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1046 return true; 1047 } 1048 } 1049 return false; 1050 } 1051 1052 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1053 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1054 int childWidthMeasureSpec; 1055 int childHeightMeasureSpec; 1056 boolean windowSizeMayChange = false; 1057 1058 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1059 "Measuring " + host + " in display " + desiredWindowWidth 1060 + "x" + desiredWindowHeight + "..."); 1061 1062 boolean goodMeasure = false; 1063 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1064 // On large screens, we don't want to allow dialogs to just 1065 // stretch to fill the entire width of the screen to display 1066 // one line of text. First try doing the layout at a smaller 1067 // size to see if it will fit. 1068 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1069 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1070 int baseSize = 0; 1071 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1072 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1073 } 1074 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1075 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1076 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1077 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1078 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1079 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1080 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1081 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1082 goodMeasure = true; 1083 } else { 1084 // Didn't fit in that size... try expanding a bit. 1085 baseSize = (baseSize+desiredWindowWidth)/2; 1086 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1087 + baseSize); 1088 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1089 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1090 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1091 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1092 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1093 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1094 goodMeasure = true; 1095 } 1096 } 1097 } 1098 } 1099 1100 if (!goodMeasure) { 1101 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1102 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1103 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1104 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1105 windowSizeMayChange = true; 1106 } 1107 } 1108 1109 if (DBG) { 1110 System.out.println("======================================"); 1111 System.out.println("performTraversals -- after measure"); 1112 host.debug(); 1113 } 1114 1115 return windowSizeMayChange; 1116 } 1117 1118 private void performTraversals() { 1119 // cache mView since it is used so much below... 1120 final View host = mView; 1121 1122 if (DBG) { 1123 System.out.println("======================================"); 1124 System.out.println("performTraversals"); 1125 host.debug(); 1126 } 1127 1128 if (host == null || !mAdded) 1129 return; 1130 1131 mIsInTraversal = true; 1132 mWillDrawSoon = true; 1133 boolean windowSizeMayChange = false; 1134 boolean newSurface = false; 1135 boolean surfaceChanged = false; 1136 WindowManager.LayoutParams lp = mWindowAttributes; 1137 1138 int desiredWindowWidth; 1139 int desiredWindowHeight; 1140 1141 final View.AttachInfo attachInfo = mAttachInfo; 1142 1143 final int viewVisibility = getHostVisibility(); 1144 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1145 || mNewSurfaceNeeded; 1146 1147 WindowManager.LayoutParams params = null; 1148 if (mWindowAttributesChanged) { 1149 mWindowAttributesChanged = false; 1150 surfaceChanged = true; 1151 params = lp; 1152 } 1153 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 1154 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1155 params = lp; 1156 mFullRedrawNeeded = true; 1157 mLayoutRequested = true; 1158 if (mLastInCompatMode) { 1159 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1160 mLastInCompatMode = false; 1161 } else { 1162 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1163 mLastInCompatMode = true; 1164 } 1165 } 1166 1167 mWindowAttributesChangesFlag = 0; 1168 1169 Rect frame = mWinFrame; 1170 if (mFirst) { 1171 mFullRedrawNeeded = true; 1172 mLayoutRequested = true; 1173 1174 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1175 // NOTE -- system code, won't try to do compat mode. 1176 Point size = new Point(); 1177 mDisplay.getRealSize(size); 1178 desiredWindowWidth = size.x; 1179 desiredWindowHeight = size.y; 1180 } else { 1181 DisplayMetrics packageMetrics = 1182 mView.getContext().getResources().getDisplayMetrics(); 1183 desiredWindowWidth = packageMetrics.widthPixels; 1184 desiredWindowHeight = packageMetrics.heightPixels; 1185 } 1186 1187 // For the very first time, tell the view hierarchy that it 1188 // is attached to the window. Note that at this point the surface 1189 // object is not initialized to its backing store, but soon it 1190 // will be (assuming the window is visible). 1191 attachInfo.mSurface = mSurface; 1192 // We used to use the following condition to choose 32 bits drawing caches: 1193 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1194 // However, windows are now always 32 bits by default, so choose 32 bits 1195 attachInfo.mUse32BitDrawingCache = true; 1196 attachInfo.mHasWindowFocus = false; 1197 attachInfo.mWindowVisibility = viewVisibility; 1198 attachInfo.mRecomputeGlobalAttributes = false; 1199 viewVisibilityChanged = false; 1200 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1201 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1202 // Set the layout direction if it has not been set before (inherit is the default) 1203 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1204 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1205 } 1206 host.dispatchAttachedToWindow(attachInfo, 0); 1207 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1208 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1209 host.fitSystemWindows(mFitSystemWindowsInsets); 1210 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1211 1212 } else { 1213 desiredWindowWidth = frame.width(); 1214 desiredWindowHeight = frame.height(); 1215 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1216 if (DEBUG_ORIENTATION) Log.v(TAG, 1217 "View " + host + " resized to: " + frame); 1218 mFullRedrawNeeded = true; 1219 mLayoutRequested = true; 1220 windowSizeMayChange = true; 1221 } 1222 } 1223 1224 if (viewVisibilityChanged) { 1225 attachInfo.mWindowVisibility = viewVisibility; 1226 host.dispatchWindowVisibilityChanged(viewVisibility); 1227 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1228 destroyHardwareResources(); 1229 } 1230 if (viewVisibility == View.GONE) { 1231 // After making a window gone, we will count it as being 1232 // shown for the first time the next time it gets focus. 1233 mHasHadWindowFocus = false; 1234 } 1235 } 1236 1237 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1238 getRunQueue().executeActions(attachInfo.mHandler); 1239 1240 boolean insetsChanged = false; 1241 1242 boolean layoutRequested = mLayoutRequested && !mStopped; 1243 if (layoutRequested) { 1244 1245 final Resources res = mView.getContext().getResources(); 1246 1247 if (mFirst) { 1248 // make sure touch mode code executes by setting cached value 1249 // to opposite of the added touch mode. 1250 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1251 ensureTouchModeLocally(mAddedTouchMode); 1252 } else { 1253 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1254 insetsChanged = true; 1255 } 1256 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1257 insetsChanged = true; 1258 } 1259 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1260 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1261 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1262 + mAttachInfo.mVisibleInsets); 1263 } 1264 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1265 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1266 windowSizeMayChange = true; 1267 1268 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1269 // NOTE -- system code, won't try to do compat mode. 1270 Point size = new Point(); 1271 mDisplay.getRealSize(size); 1272 desiredWindowWidth = size.x; 1273 desiredWindowHeight = size.y; 1274 } else { 1275 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1276 desiredWindowWidth = packageMetrics.widthPixels; 1277 desiredWindowHeight = packageMetrics.heightPixels; 1278 } 1279 } 1280 } 1281 1282 // Ask host how big it wants to be 1283 windowSizeMayChange |= measureHierarchy(host, lp, res, 1284 desiredWindowWidth, desiredWindowHeight); 1285 } 1286 1287 if (collectViewAttributes()) { 1288 params = lp; 1289 } 1290 if (attachInfo.mForceReportNewAttributes) { 1291 attachInfo.mForceReportNewAttributes = false; 1292 params = lp; 1293 } 1294 1295 if (mFirst || attachInfo.mViewVisibilityChanged) { 1296 attachInfo.mViewVisibilityChanged = false; 1297 int resizeMode = mSoftInputMode & 1298 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1299 // If we are in auto resize mode, then we need to determine 1300 // what mode to use now. 1301 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1302 final int N = attachInfo.mScrollContainers.size(); 1303 for (int i=0; i<N; i++) { 1304 if (attachInfo.mScrollContainers.get(i).isShown()) { 1305 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1306 } 1307 } 1308 if (resizeMode == 0) { 1309 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1310 } 1311 if ((lp.softInputMode & 1312 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1313 lp.softInputMode = (lp.softInputMode & 1314 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1315 resizeMode; 1316 params = lp; 1317 } 1318 } 1319 } 1320 1321 if (params != null) { 1322 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1323 if (!PixelFormat.formatHasAlpha(params.format)) { 1324 params.format = PixelFormat.TRANSLUCENT; 1325 } 1326 } 1327 mAttachInfo.mOverscanRequested = (params.flags 1328 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1329 } 1330 1331 if (mFitSystemWindowsRequested) { 1332 mFitSystemWindowsRequested = false; 1333 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1334 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1335 host.fitSystemWindows(mFitSystemWindowsInsets); 1336 if (mLayoutRequested) { 1337 // Short-circuit catching a new layout request here, so 1338 // we don't need to go through two layout passes when things 1339 // change due to fitting system windows, which can happen a lot. 1340 windowSizeMayChange |= measureHierarchy(host, lp, 1341 mView.getContext().getResources(), 1342 desiredWindowWidth, desiredWindowHeight); 1343 } 1344 } 1345 1346 if (layoutRequested) { 1347 // Clear this now, so that if anything requests a layout in the 1348 // rest of this function we will catch it and re-run a full 1349 // layout pass. 1350 mLayoutRequested = false; 1351 } 1352 1353 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1354 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1355 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1356 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1357 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1358 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1359 1360 final boolean computesInternalInsets = 1361 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1362 1363 boolean insetsPending = false; 1364 int relayoutResult = 0; 1365 1366 if (mFirst || windowShouldResize || insetsChanged || 1367 viewVisibilityChanged || params != null) { 1368 1369 if (viewVisibility == View.VISIBLE) { 1370 // If this window is giving internal insets to the window 1371 // manager, and it is being added or changing its visibility, 1372 // then we want to first give the window manager "fake" 1373 // insets to cause it to effectively ignore the content of 1374 // the window during layout. This avoids it briefly causing 1375 // other windows to resize/move based on the raw frame of the 1376 // window, waiting until we can finish laying out this window 1377 // and get back to the window manager with the ultimately 1378 // computed insets. 1379 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1380 } 1381 1382 if (mSurfaceHolder != null) { 1383 mSurfaceHolder.mSurfaceLock.lock(); 1384 mDrawingAllowed = true; 1385 } 1386 1387 boolean hwInitialized = false; 1388 boolean contentInsetsChanged = false; 1389 boolean hadSurface = mSurface.isValid(); 1390 1391 try { 1392 if (DEBUG_LAYOUT) { 1393 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1394 host.getMeasuredHeight() + ", params=" + params); 1395 } 1396 1397 final int surfaceGenerationId = mSurface.getGenerationId(); 1398 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1399 mWindowsAnimating |= 1400 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0; 1401 1402 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1403 + " overscan=" + mPendingOverscanInsets.toShortString() 1404 + " content=" + mPendingContentInsets.toShortString() 1405 + " visible=" + mPendingVisibleInsets.toShortString() 1406 + " surface=" + mSurface); 1407 1408 if (mPendingConfiguration.seq != 0) { 1409 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1410 + mPendingConfiguration); 1411 updateConfiguration(mPendingConfiguration, !mFirst); 1412 mPendingConfiguration.seq = 0; 1413 } 1414 1415 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1416 mAttachInfo.mOverscanInsets); 1417 contentInsetsChanged = !mPendingContentInsets.equals( 1418 mAttachInfo.mContentInsets); 1419 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1420 mAttachInfo.mVisibleInsets); 1421 if (contentInsetsChanged) { 1422 if (mWidth > 0 && mHeight > 0 && lp != null && 1423 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1424 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1425 mSurface != null && mSurface.isValid() && 1426 !mAttachInfo.mTurnOffWindowResizeAnim && 1427 mAttachInfo.mHardwareRenderer != null && 1428 mAttachInfo.mHardwareRenderer.isEnabled() && 1429 mAttachInfo.mHardwareRenderer.validate() && 1430 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1431 1432 disposeResizeBuffer(); 1433 1434 boolean completed = false; 1435 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1436 HardwareCanvas layerCanvas = null; 1437 try { 1438 if (mResizeBuffer == null) { 1439 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1440 mWidth, mHeight, false); 1441 } else if (mResizeBuffer.getWidth() != mWidth || 1442 mResizeBuffer.getHeight() != mHeight) { 1443 mResizeBuffer.resize(mWidth, mHeight); 1444 } 1445 // TODO: should handle create/resize failure 1446 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1447 final int restoreCount = layerCanvas.save(); 1448 1449 int yoff; 1450 final boolean scrolling = mScroller != null 1451 && mScroller.computeScrollOffset(); 1452 if (scrolling) { 1453 yoff = mScroller.getCurrY(); 1454 mScroller.abortAnimation(); 1455 } else { 1456 yoff = mScrollY; 1457 } 1458 1459 layerCanvas.translate(0, -yoff); 1460 if (mTranslator != null) { 1461 mTranslator.translateCanvas(layerCanvas); 1462 } 1463 1464 DisplayList displayList = mView.mDisplayList; 1465 if (displayList != null) { 1466 layerCanvas.drawDisplayList(displayList, null, 1467 DisplayList.FLAG_CLIP_CHILDREN); 1468 } else { 1469 mView.draw(layerCanvas); 1470 } 1471 1472 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1473 1474 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1475 mResizeBufferDuration = mView.getResources().getInteger( 1476 com.android.internal.R.integer.config_mediumAnimTime); 1477 completed = true; 1478 1479 layerCanvas.restoreToCount(restoreCount); 1480 } catch (OutOfMemoryError e) { 1481 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1482 } finally { 1483 if (mResizeBuffer != null) { 1484 mResizeBuffer.end(hwRendererCanvas); 1485 if (!completed) { 1486 mResizeBuffer.destroy(); 1487 mResizeBuffer = null; 1488 } 1489 } 1490 } 1491 } 1492 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1493 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1494 + mAttachInfo.mContentInsets); 1495 } 1496 if (overscanInsetsChanged) { 1497 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1498 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1499 + mAttachInfo.mOverscanInsets); 1500 // Need to relayout with content insets. 1501 contentInsetsChanged = true; 1502 } 1503 if (contentInsetsChanged || mLastSystemUiVisibility != 1504 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1505 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1506 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1507 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1508 mFitSystemWindowsRequested = false; 1509 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1510 host.fitSystemWindows(mFitSystemWindowsInsets); 1511 } 1512 if (visibleInsetsChanged) { 1513 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1514 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1515 + mAttachInfo.mVisibleInsets); 1516 } 1517 1518 if (!hadSurface) { 1519 if (mSurface.isValid()) { 1520 // If we are creating a new surface, then we need to 1521 // completely redraw it. Also, when we get to the 1522 // point of drawing it we will hold off and schedule 1523 // a new traversal instead. This is so we can tell the 1524 // window manager about all of the windows being displayed 1525 // before actually drawing them, so it can display then 1526 // all at once. 1527 newSurface = true; 1528 mFullRedrawNeeded = true; 1529 mPreviousTransparentRegion.setEmpty(); 1530 1531 if (mAttachInfo.mHardwareRenderer != null) { 1532 try { 1533 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1534 mHolder.getSurface()); 1535 } catch (Surface.OutOfResourcesException e) { 1536 handleOutOfResourcesException(e); 1537 return; 1538 } 1539 } 1540 } 1541 } else if (!mSurface.isValid()) { 1542 // If the surface has been removed, then reset the scroll 1543 // positions. 1544 if (mLastScrolledFocus != null) { 1545 mLastScrolledFocus.clear(); 1546 } 1547 mScrollY = mCurScrollY = 0; 1548 if (mScroller != null) { 1549 mScroller.abortAnimation(); 1550 } 1551 disposeResizeBuffer(); 1552 // Our surface is gone 1553 if (mAttachInfo.mHardwareRenderer != null && 1554 mAttachInfo.mHardwareRenderer.isEnabled()) { 1555 mAttachInfo.mHardwareRenderer.destroy(true); 1556 } 1557 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1558 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1559 mFullRedrawNeeded = true; 1560 try { 1561 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1562 } catch (Surface.OutOfResourcesException e) { 1563 handleOutOfResourcesException(e); 1564 return; 1565 } 1566 } 1567 } catch (RemoteException e) { 1568 } 1569 1570 if (DEBUG_ORIENTATION) Log.v( 1571 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1572 1573 attachInfo.mWindowLeft = frame.left; 1574 attachInfo.mWindowTop = frame.top; 1575 1576 // !!FIXME!! This next section handles the case where we did not get the 1577 // window size we asked for. We should avoid this by getting a maximum size from 1578 // the window session beforehand. 1579 if (mWidth != frame.width() || mHeight != frame.height()) { 1580 mWidth = frame.width(); 1581 mHeight = frame.height(); 1582 } 1583 1584 if (mSurfaceHolder != null) { 1585 // The app owns the surface; tell it about what is going on. 1586 if (mSurface.isValid()) { 1587 // XXX .copyFrom() doesn't work! 1588 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1589 mSurfaceHolder.mSurface = mSurface; 1590 } 1591 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1592 mSurfaceHolder.mSurfaceLock.unlock(); 1593 if (mSurface.isValid()) { 1594 if (!hadSurface) { 1595 mSurfaceHolder.ungetCallbacks(); 1596 1597 mIsCreating = true; 1598 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1599 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1600 if (callbacks != null) { 1601 for (SurfaceHolder.Callback c : callbacks) { 1602 c.surfaceCreated(mSurfaceHolder); 1603 } 1604 } 1605 surfaceChanged = true; 1606 } 1607 if (surfaceChanged) { 1608 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1609 lp.format, mWidth, mHeight); 1610 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1611 if (callbacks != null) { 1612 for (SurfaceHolder.Callback c : callbacks) { 1613 c.surfaceChanged(mSurfaceHolder, lp.format, 1614 mWidth, mHeight); 1615 } 1616 } 1617 } 1618 mIsCreating = false; 1619 } else if (hadSurface) { 1620 mSurfaceHolder.ungetCallbacks(); 1621 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1622 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1623 if (callbacks != null) { 1624 for (SurfaceHolder.Callback c : callbacks) { 1625 c.surfaceDestroyed(mSurfaceHolder); 1626 } 1627 } 1628 mSurfaceHolder.mSurfaceLock.lock(); 1629 try { 1630 mSurfaceHolder.mSurface = new Surface(); 1631 } finally { 1632 mSurfaceHolder.mSurfaceLock.unlock(); 1633 } 1634 } 1635 } 1636 1637 if (mAttachInfo.mHardwareRenderer != null && 1638 mAttachInfo.mHardwareRenderer.isEnabled()) { 1639 if (hwInitialized || windowShouldResize || 1640 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1641 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1642 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1643 if (!hwInitialized) { 1644 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1645 mFullRedrawNeeded = true; 1646 } 1647 } 1648 } 1649 1650 if (!mStopped) { 1651 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1652 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1653 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1654 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1655 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1656 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1657 1658 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1659 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1660 + " mHeight=" + mHeight 1661 + " measuredHeight=" + host.getMeasuredHeight() 1662 + " coveredInsetsChanged=" + contentInsetsChanged); 1663 1664 // Ask host how big it wants to be 1665 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1666 1667 // Implementation of weights from WindowManager.LayoutParams 1668 // We just grow the dimensions as needed and re-measure if 1669 // needs be 1670 int width = host.getMeasuredWidth(); 1671 int height = host.getMeasuredHeight(); 1672 boolean measureAgain = false; 1673 1674 if (lp.horizontalWeight > 0.0f) { 1675 width += (int) ((mWidth - width) * lp.horizontalWeight); 1676 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1677 MeasureSpec.EXACTLY); 1678 measureAgain = true; 1679 } 1680 if (lp.verticalWeight > 0.0f) { 1681 height += (int) ((mHeight - height) * lp.verticalWeight); 1682 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1683 MeasureSpec.EXACTLY); 1684 measureAgain = true; 1685 } 1686 1687 if (measureAgain) { 1688 if (DEBUG_LAYOUT) Log.v(TAG, 1689 "And hey let's measure once more: width=" + width 1690 + " height=" + height); 1691 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1692 } 1693 1694 layoutRequested = true; 1695 } 1696 } 1697 } else { 1698 // Not the first pass and no window/insets/visibility change but the window 1699 // may have moved and we need check that and if so to update the left and right 1700 // in the attach info. We translate only the window frame since on window move 1701 // the window manager tells us only for the new frame but the insets are the 1702 // same and we do not want to translate them more than once. 1703 1704 // TODO: Well, we are checking whether the frame has changed similarly 1705 // to how this is done for the insets. This is however incorrect since 1706 // the insets and the frame are translated. For example, the old frame 1707 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1708 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1709 // true since we are comparing a not translated value to a translated one. 1710 // This scenario is rare but we may want to fix that. 1711 1712 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1713 || attachInfo.mWindowTop != frame.top); 1714 if (windowMoved) { 1715 if (mTranslator != null) { 1716 mTranslator.translateRectInScreenToAppWinFrame(frame); 1717 } 1718 attachInfo.mWindowLeft = frame.left; 1719 attachInfo.mWindowTop = frame.top; 1720 } 1721 } 1722 1723 final boolean didLayout = layoutRequested && !mStopped; 1724 boolean triggerGlobalLayoutListener = didLayout 1725 || attachInfo.mRecomputeGlobalAttributes; 1726 if (didLayout) { 1727 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1728 1729 // By this point all views have been sized and positioned 1730 // We can compute the transparent area 1731 1732 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1733 // start out transparent 1734 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1735 host.getLocationInWindow(mTmpLocation); 1736 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1737 mTmpLocation[0] + host.mRight - host.mLeft, 1738 mTmpLocation[1] + host.mBottom - host.mTop); 1739 1740 host.gatherTransparentRegion(mTransparentRegion); 1741 if (mTranslator != null) { 1742 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1743 } 1744 1745 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1746 mPreviousTransparentRegion.set(mTransparentRegion); 1747 mFullRedrawNeeded = true; 1748 // reconfigure window manager 1749 try { 1750 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1751 } catch (RemoteException e) { 1752 } 1753 } 1754 } 1755 1756 if (DBG) { 1757 System.out.println("======================================"); 1758 System.out.println("performTraversals -- after setFrame"); 1759 host.debug(); 1760 } 1761 } 1762 1763 if (triggerGlobalLayoutListener) { 1764 attachInfo.mRecomputeGlobalAttributes = false; 1765 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1766 1767 if (AccessibilityManager.getInstance(host.mContext).isEnabled()) { 1768 postSendWindowContentChangedCallback(mView); 1769 } 1770 } 1771 1772 if (computesInternalInsets) { 1773 // Clear the original insets. 1774 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1775 insets.reset(); 1776 1777 // Compute new insets in place. 1778 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1779 1780 // Tell the window manager. 1781 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1782 mLastGivenInsets.set(insets); 1783 1784 // Translate insets to screen coordinates if needed. 1785 final Rect contentInsets; 1786 final Rect visibleInsets; 1787 final Region touchableRegion; 1788 if (mTranslator != null) { 1789 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1790 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1791 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1792 } else { 1793 contentInsets = insets.contentInsets; 1794 visibleInsets = insets.visibleInsets; 1795 touchableRegion = insets.touchableRegion; 1796 } 1797 1798 try { 1799 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1800 contentInsets, visibleInsets, touchableRegion); 1801 } catch (RemoteException e) { 1802 } 1803 } 1804 } 1805 1806 boolean skipDraw = false; 1807 1808 if (mFirst) { 1809 // handle first focus request 1810 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1811 + mView.hasFocus()); 1812 if (mView != null) { 1813 if (!mView.hasFocus()) { 1814 mView.requestFocus(View.FOCUS_FORWARD); 1815 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1816 + mView.findFocus()); 1817 } else { 1818 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1819 + mView.findFocus()); 1820 } 1821 } 1822 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1823 // The first time we relayout the window, if the system is 1824 // doing window animations, we want to hold of on any future 1825 // draws until the animation is done. 1826 mWindowsAnimating = true; 1827 } 1828 } else if (mWindowsAnimating) { 1829 skipDraw = true; 1830 } 1831 1832 mFirst = false; 1833 mWillDrawSoon = false; 1834 mNewSurfaceNeeded = false; 1835 mViewVisibility = viewVisibility; 1836 1837 if (mAttachInfo.mHasWindowFocus) { 1838 final boolean imTarget = WindowManager.LayoutParams 1839 .mayUseInputMethod(mWindowAttributes.flags); 1840 if (imTarget != mLastWasImTarget) { 1841 mLastWasImTarget = imTarget; 1842 InputMethodManager imm = InputMethodManager.peekInstance(); 1843 if (imm != null && imTarget) { 1844 imm.startGettingWindowFocus(mView); 1845 imm.onWindowFocus(mView, mView.findFocus(), 1846 mWindowAttributes.softInputMode, 1847 !mHasHadWindowFocus, mWindowAttributes.flags); 1848 } 1849 } 1850 } 1851 1852 // Remember if we must report the next draw. 1853 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1854 mReportNextDraw = true; 1855 } 1856 1857 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1858 viewVisibility != View.VISIBLE; 1859 1860 if (!cancelDraw && !newSurface) { 1861 if (!skipDraw || mReportNextDraw) { 1862 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1863 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1864 mPendingTransitions.get(i).startChangingAnimations(); 1865 } 1866 mPendingTransitions.clear(); 1867 } 1868 1869 performDraw(); 1870 } 1871 } else { 1872 if (viewVisibility == View.VISIBLE) { 1873 // Try again 1874 scheduleTraversals(); 1875 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1876 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1877 mPendingTransitions.get(i).endChangingAnimations(); 1878 } 1879 mPendingTransitions.clear(); 1880 } 1881 } 1882 1883 mIsInTraversal = false; 1884 } 1885 1886 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1887 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1888 try { 1889 if (!mWindowSession.outOfMemory(mWindow) && 1890 Process.myUid() != Process.SYSTEM_UID) { 1891 Slog.w(TAG, "No processes killed for memory; killing self"); 1892 Process.killProcess(Process.myPid()); 1893 } 1894 } catch (RemoteException ex) { 1895 } 1896 mLayoutRequested = true; // ask wm for a new surface next time. 1897 } 1898 1899 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1900 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1901 try { 1902 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1903 } finally { 1904 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1905 } 1906 } 1907 1908 /** 1909 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1910 * is currently undergoing a layout pass. 1911 * 1912 * @return whether the view hierarchy is currently undergoing a layout pass 1913 */ 1914 boolean isInLayout() { 1915 return mInLayout; 1916 } 1917 1918 /** 1919 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1920 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1921 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1922 * all children in that container hierarchy are measured and laid out at the end of the layout 1923 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1924 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1925 * we check all of those views to see if any still have pending layout requests, which 1926 * indicates that they were not correctly handled by their container hierarchy. If that is 1927 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1928 * to blank containers, and force a second request/measure/layout pass in this frame. If 1929 * more requestLayout() calls are received during that second layout pass, we post those 1930 * requests to the next frame to avoid possible infinite loops. 1931 * 1932 * <p>The return value from this method indicates whether the request should proceed 1933 * (if it is a request during the first layout pass) or should be skipped and posted to the 1934 * next frame (if it is a request during the second layout pass).</p> 1935 * 1936 * @param view the view that requested the layout. 1937 * 1938 * @return true if request should proceed, false otherwise. 1939 */ 1940 boolean requestLayoutDuringLayout(final View view) { 1941 if (view.mParent == null || view.mAttachInfo == null) { 1942 // Would not normally trigger another layout, so just let it pass through as usual 1943 return true; 1944 } 1945 if (!mLayoutRequesters.contains(view)) { 1946 mLayoutRequesters.add(view); 1947 } 1948 if (!mHandlingLayoutInLayoutRequest) { 1949 // Let the request proceed normally; it will be processed in a second layout pass 1950 // if necessary 1951 return true; 1952 } else { 1953 // Don't let the request proceed during the second layout pass. 1954 // It will post to the next frame instead. 1955 return false; 1956 } 1957 } 1958 1959 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1960 int desiredWindowHeight) { 1961 mLayoutRequested = false; 1962 mScrollMayChange = true; 1963 mInLayout = true; 1964 1965 final View host = mView; 1966 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1967 Log.v(TAG, "Laying out " + host + " to (" + 1968 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1969 } 1970 1971 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1972 try { 1973 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1974 1975 mInLayout = false; 1976 int numViewsRequestingLayout = mLayoutRequesters.size(); 1977 if (numViewsRequestingLayout > 0) { 1978 // requestLayout() was called during layout. 1979 // If no layout-request flags are set on the requesting views, there is no problem. 1980 // If some requests are still pending, then we need to clear those flags and do 1981 // a full request/measure/layout pass to handle this situation. 1982 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1983 false); 1984 if (validLayoutRequesters != null) { 1985 // Set this flag to indicate that any further requests are happening during 1986 // the second pass, which may result in posting those requests to the next 1987 // frame instead 1988 mHandlingLayoutInLayoutRequest = true; 1989 1990 // Process fresh layout requests, then measure and layout 1991 int numValidRequests = validLayoutRequesters.size(); 1992 for (int i = 0; i < numValidRequests; ++i) { 1993 final View view = validLayoutRequesters.get(i); 1994 Log.w("View", "requestLayout() improperly called by " + view + 1995 " during layout: running second layout pass"); 1996 view.requestLayout(); 1997 } 1998 measureHierarchy(host, lp, mView.getContext().getResources(), 1999 desiredWindowWidth, desiredWindowHeight); 2000 mInLayout = true; 2001 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2002 2003 mHandlingLayoutInLayoutRequest = false; 2004 2005 // Check the valid requests again, this time without checking/clearing the 2006 // layout flags, since requests happening during the second pass get noop'd 2007 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2008 if (validLayoutRequesters != null) { 2009 final ArrayList<View> finalRequesters = validLayoutRequesters; 2010 // Post second-pass requests to the next frame 2011 getRunQueue().post(new Runnable() { 2012 @Override 2013 public void run() { 2014 int numValidRequests = finalRequesters.size(); 2015 for (int i = 0; i < numValidRequests; ++i) { 2016 final View view = finalRequesters.get(i); 2017 Log.w("View", "requestLayout() improperly called by " + view + 2018 " during second layout pass: posting in next frame"); 2019 view.requestLayout(); 2020 } 2021 } 2022 }); 2023 } 2024 } 2025 2026 } 2027 } finally { 2028 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2029 } 2030 mInLayout = false; 2031 } 2032 2033 /** 2034 * This method is called during layout when there have been calls to requestLayout() during 2035 * layout. It walks through the list of views that requested layout to determine which ones 2036 * still need it, based on visibility in the hierarchy and whether they have already been 2037 * handled (as is usually the case with ListView children). 2038 * 2039 * @param layoutRequesters The list of views that requested layout during layout 2040 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2041 * If so, the FORCE_LAYOUT flag was not set on requesters. 2042 * @return A list of the actual views that still need to be laid out. 2043 */ 2044 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2045 boolean secondLayoutRequests) { 2046 2047 int numViewsRequestingLayout = layoutRequesters.size(); 2048 ArrayList<View> validLayoutRequesters = null; 2049 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2050 View view = layoutRequesters.get(i); 2051 if (view != null && view.mAttachInfo != null && view.mParent != null && 2052 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2053 View.PFLAG_FORCE_LAYOUT)) { 2054 boolean gone = false; 2055 View parent = view; 2056 // Only trigger new requests for views in a non-GONE hierarchy 2057 while (parent != null) { 2058 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2059 gone = true; 2060 break; 2061 } 2062 if (parent.mParent instanceof View) { 2063 parent = (View) parent.mParent; 2064 } else { 2065 parent = null; 2066 } 2067 } 2068 if (!gone) { 2069 if (validLayoutRequesters == null) { 2070 validLayoutRequesters = new ArrayList<View>(); 2071 } 2072 validLayoutRequesters.add(view); 2073 } 2074 } 2075 } 2076 if (!secondLayoutRequests) { 2077 // If we're checking the layout flags, then we need to clean them up also 2078 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2079 View view = layoutRequesters.get(i); 2080 while (view != null && 2081 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2082 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2083 if (view.mParent instanceof View) { 2084 view = (View) view.mParent; 2085 } else { 2086 view = null; 2087 } 2088 } 2089 } 2090 } 2091 layoutRequesters.clear(); 2092 return validLayoutRequesters; 2093 } 2094 2095 public void requestTransparentRegion(View child) { 2096 // the test below should not fail unless someone is messing with us 2097 checkThread(); 2098 if (mView == child) { 2099 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2100 // Need to make sure we re-evaluate the window attributes next 2101 // time around, to ensure the window has the correct format. 2102 mWindowAttributesChanged = true; 2103 mWindowAttributesChangesFlag = 0; 2104 requestLayout(); 2105 } 2106 } 2107 2108 /** 2109 * Figures out the measure spec for the root view in a window based on it's 2110 * layout params. 2111 * 2112 * @param windowSize 2113 * The available width or height of the window 2114 * 2115 * @param rootDimension 2116 * The layout params for one dimension (width or height) of the 2117 * window. 2118 * 2119 * @return The measure spec to use to measure the root view. 2120 */ 2121 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2122 int measureSpec; 2123 switch (rootDimension) { 2124 2125 case ViewGroup.LayoutParams.MATCH_PARENT: 2126 // Window can't resize. Force root view to be windowSize. 2127 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2128 break; 2129 case ViewGroup.LayoutParams.WRAP_CONTENT: 2130 // Window can resize. Set max size for root view. 2131 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2132 break; 2133 default: 2134 // Window wants to be an exact size. Force root view to be that size. 2135 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2136 break; 2137 } 2138 return measureSpec; 2139 } 2140 2141 int mHardwareYOffset; 2142 int mResizeAlpha; 2143 final Paint mResizePaint = new Paint(); 2144 2145 public void onHardwarePreDraw(HardwareCanvas canvas) { 2146 canvas.translate(0, -mHardwareYOffset); 2147 } 2148 2149 public void onHardwarePostDraw(HardwareCanvas canvas) { 2150 if (mResizeBuffer != null) { 2151 mResizePaint.setAlpha(mResizeAlpha); 2152 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2153 } 2154 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2155 } 2156 2157 /** 2158 * @hide 2159 */ 2160 void outputDisplayList(View view) { 2161 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2162 DisplayList displayList = view.getDisplayList(); 2163 if (displayList != null) { 2164 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2165 } 2166 } 2167 } 2168 2169 /** 2170 * @see #PROPERTY_PROFILE_RENDERING 2171 */ 2172 private void profileRendering(boolean enabled) { 2173 if (mProfileRendering) { 2174 mRenderProfilingEnabled = enabled; 2175 2176 if (mRenderProfiler != null) { 2177 mChoreographer.removeFrameCallback(mRenderProfiler); 2178 } 2179 if (mRenderProfilingEnabled) { 2180 if (mRenderProfiler == null) { 2181 mRenderProfiler = new Choreographer.FrameCallback() { 2182 @Override 2183 public void doFrame(long frameTimeNanos) { 2184 mDirty.set(0, 0, mWidth, mHeight); 2185 scheduleTraversals(); 2186 if (mRenderProfilingEnabled) { 2187 mChoreographer.postFrameCallback(mRenderProfiler); 2188 } 2189 } 2190 }; 2191 } 2192 mChoreographer.postFrameCallback(mRenderProfiler); 2193 } else { 2194 mRenderProfiler = null; 2195 } 2196 } 2197 } 2198 2199 /** 2200 * Called from draw() when DEBUG_FPS is enabled 2201 */ 2202 private void trackFPS() { 2203 // Tracks frames per second drawn. First value in a series of draws may be bogus 2204 // because it down not account for the intervening idle time 2205 long nowTime = System.currentTimeMillis(); 2206 if (mFpsStartTime < 0) { 2207 mFpsStartTime = mFpsPrevTime = nowTime; 2208 mFpsNumFrames = 0; 2209 } else { 2210 ++mFpsNumFrames; 2211 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2212 long frameTime = nowTime - mFpsPrevTime; 2213 long totalTime = nowTime - mFpsStartTime; 2214 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2215 mFpsPrevTime = nowTime; 2216 if (totalTime > 1000) { 2217 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2218 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2219 mFpsStartTime = nowTime; 2220 mFpsNumFrames = 0; 2221 } 2222 } 2223 } 2224 2225 private void performDraw() { 2226 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2227 return; 2228 } 2229 2230 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2231 mFullRedrawNeeded = false; 2232 2233 mIsDrawing = true; 2234 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2235 try { 2236 draw(fullRedrawNeeded); 2237 } finally { 2238 mIsDrawing = false; 2239 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2240 } 2241 2242 if (mReportNextDraw) { 2243 mReportNextDraw = false; 2244 2245 if (LOCAL_LOGV) { 2246 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2247 } 2248 if (mSurfaceHolder != null && mSurface.isValid()) { 2249 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2250 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2251 if (callbacks != null) { 2252 for (SurfaceHolder.Callback c : callbacks) { 2253 if (c instanceof SurfaceHolder.Callback2) { 2254 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2255 mSurfaceHolder); 2256 } 2257 } 2258 } 2259 } 2260 try { 2261 mWindowSession.finishDrawing(mWindow); 2262 } catch (RemoteException e) { 2263 } 2264 } 2265 } 2266 2267 private void draw(boolean fullRedrawNeeded) { 2268 Surface surface = mSurface; 2269 if (!surface.isValid()) { 2270 return; 2271 } 2272 2273 if (DEBUG_FPS) { 2274 trackFPS(); 2275 } 2276 2277 if (!sFirstDrawComplete) { 2278 synchronized (sFirstDrawHandlers) { 2279 sFirstDrawComplete = true; 2280 final int count = sFirstDrawHandlers.size(); 2281 for (int i = 0; i< count; i++) { 2282 mHandler.post(sFirstDrawHandlers.get(i)); 2283 } 2284 } 2285 } 2286 2287 scrollToRectOrFocus(null, false); 2288 2289 final AttachInfo attachInfo = mAttachInfo; 2290 if (attachInfo.mViewScrollChanged) { 2291 attachInfo.mViewScrollChanged = false; 2292 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2293 } 2294 2295 int yoff; 2296 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2297 if (animating) { 2298 yoff = mScroller.getCurrY(); 2299 } else { 2300 yoff = mScrollY; 2301 } 2302 if (mCurScrollY != yoff) { 2303 mCurScrollY = yoff; 2304 fullRedrawNeeded = true; 2305 } 2306 2307 final float appScale = attachInfo.mApplicationScale; 2308 final boolean scalingRequired = attachInfo.mScalingRequired; 2309 2310 int resizeAlpha = 0; 2311 if (mResizeBuffer != null) { 2312 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2313 if (deltaTime < mResizeBufferDuration) { 2314 float amt = deltaTime/(float) mResizeBufferDuration; 2315 amt = mResizeInterpolator.getInterpolation(amt); 2316 animating = true; 2317 resizeAlpha = 255 - (int)(amt*255); 2318 } else { 2319 disposeResizeBuffer(); 2320 } 2321 } 2322 2323 final Rect dirty = mDirty; 2324 if (mSurfaceHolder != null) { 2325 // The app owns the surface, we won't draw. 2326 dirty.setEmpty(); 2327 if (animating) { 2328 if (mScroller != null) { 2329 mScroller.abortAnimation(); 2330 } 2331 disposeResizeBuffer(); 2332 } 2333 return; 2334 } 2335 2336 if (fullRedrawNeeded) { 2337 attachInfo.mIgnoreDirtyState = true; 2338 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2339 } 2340 2341 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2342 Log.v(TAG, "Draw " + mView + "/" 2343 + mWindowAttributes.getTitle() 2344 + ": dirty={" + dirty.left + "," + dirty.top 2345 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2346 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2347 appScale + ", width=" + mWidth + ", height=" + mHeight); 2348 } 2349 2350 invalidateDisplayLists(); 2351 2352 attachInfo.mTreeObserver.dispatchOnDraw(); 2353 2354 if (!dirty.isEmpty() || mIsAnimating) { 2355 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2356 // Draw with hardware renderer. 2357 mIsAnimating = false; 2358 mHardwareYOffset = yoff; 2359 mResizeAlpha = resizeAlpha; 2360 2361 mCurrentDirty.set(dirty); 2362 dirty.setEmpty(); 2363 2364 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2365 animating ? null : mCurrentDirty); 2366 } else { 2367 // If we get here with a disabled & requested hardware renderer, something went 2368 // wrong (an invalidate posted right before we destroyed the hardware surface 2369 // for instance) so we should just bail out. Locking the surface with software 2370 // rendering at this point would lock it forever and prevent hardware renderer 2371 // from doing its job when it comes back. 2372 // Before we request a new frame we must however attempt to reinitiliaze the 2373 // hardware renderer if it's in requested state. This would happen after an 2374 // eglTerminate() for instance. 2375 if (attachInfo.mHardwareRenderer != null && 2376 !attachInfo.mHardwareRenderer.isEnabled() && 2377 attachInfo.mHardwareRenderer.isRequested()) { 2378 2379 try { 2380 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2381 mHolder.getSurface()); 2382 } catch (Surface.OutOfResourcesException e) { 2383 handleOutOfResourcesException(e); 2384 return; 2385 } 2386 2387 mFullRedrawNeeded = true; 2388 scheduleTraversals(); 2389 return; 2390 } 2391 2392 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2393 return; 2394 } 2395 } 2396 } 2397 2398 if (animating) { 2399 mFullRedrawNeeded = true; 2400 scheduleTraversals(); 2401 } 2402 } 2403 2404 /** 2405 * @return true if drawing was succesfull, false if an error occurred 2406 */ 2407 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2408 boolean scalingRequired, Rect dirty) { 2409 2410 // Draw with software renderer. 2411 Canvas canvas; 2412 try { 2413 int left = dirty.left; 2414 int top = dirty.top; 2415 int right = dirty.right; 2416 int bottom = dirty.bottom; 2417 2418 canvas = mSurface.lockCanvas(dirty); 2419 2420 // The dirty rectangle can be modified by Surface.lockCanvas() 2421 //noinspection ConstantConditions 2422 if (left != dirty.left || top != dirty.top || right != dirty.right || 2423 bottom != dirty.bottom) { 2424 attachInfo.mIgnoreDirtyState = true; 2425 } 2426 2427 // TODO: Do this in native 2428 canvas.setDensity(mDensity); 2429 } catch (Surface.OutOfResourcesException e) { 2430 handleOutOfResourcesException(e); 2431 return false; 2432 } catch (IllegalArgumentException e) { 2433 Log.e(TAG, "Could not lock surface", e); 2434 // Don't assume this is due to out of memory, it could be 2435 // something else, and if it is something else then we could 2436 // kill stuff (or ourself) for no reason. 2437 mLayoutRequested = true; // ask wm for a new surface next time. 2438 return false; 2439 } 2440 2441 try { 2442 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2443 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2444 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2445 //canvas.drawARGB(255, 255, 0, 0); 2446 } 2447 2448 // If this bitmap's format includes an alpha channel, we 2449 // need to clear it before drawing so that the child will 2450 // properly re-composite its drawing on a transparent 2451 // background. This automatically respects the clip/dirty region 2452 // or 2453 // If we are applying an offset, we need to clear the area 2454 // where the offset doesn't appear to avoid having garbage 2455 // left in the blank areas. 2456 if (!canvas.isOpaque() || yoff != 0) { 2457 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2458 } 2459 2460 dirty.setEmpty(); 2461 mIsAnimating = false; 2462 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2463 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2464 2465 if (DEBUG_DRAW) { 2466 Context cxt = mView.getContext(); 2467 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2468 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2469 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2470 } 2471 try { 2472 canvas.translate(0, -yoff); 2473 if (mTranslator != null) { 2474 mTranslator.translateCanvas(canvas); 2475 } 2476 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2477 attachInfo.mSetIgnoreDirtyState = false; 2478 2479 mView.draw(canvas); 2480 2481 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2482 } finally { 2483 if (!attachInfo.mSetIgnoreDirtyState) { 2484 // Only clear the flag if it was not set during the mView.draw() call 2485 attachInfo.mIgnoreDirtyState = false; 2486 } 2487 } 2488 } finally { 2489 try { 2490 surface.unlockCanvasAndPost(canvas); 2491 } catch (IllegalArgumentException e) { 2492 Log.e(TAG, "Could not unlock surface", e); 2493 mLayoutRequested = true; // ask wm for a new surface next time. 2494 //noinspection ReturnInsideFinallyBlock 2495 return false; 2496 } 2497 2498 if (LOCAL_LOGV) { 2499 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2500 } 2501 } 2502 return true; 2503 } 2504 2505 /** 2506 * We want to draw a highlight around the current accessibility focused. 2507 * Since adding a style for all possible view is not a viable option we 2508 * have this specialized drawing method. 2509 * 2510 * Note: We are doing this here to be able to draw the highlight for 2511 * virtual views in addition to real ones. 2512 * 2513 * @param canvas The canvas on which to draw. 2514 */ 2515 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2516 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2517 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2518 return; 2519 } 2520 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2521 return; 2522 } 2523 Drawable drawable = getAccessibilityFocusedDrawable(); 2524 if (drawable == null) { 2525 return; 2526 } 2527 AccessibilityNodeProvider provider = 2528 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2529 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2530 if (provider == null) { 2531 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2532 } else { 2533 if (mAccessibilityFocusedVirtualView == null) { 2534 return; 2535 } 2536 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2537 } 2538 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2539 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2540 drawable.setBounds(bounds); 2541 drawable.draw(canvas); 2542 } 2543 2544 private Drawable getAccessibilityFocusedDrawable() { 2545 if (mAttachInfo != null) { 2546 // Lazily load the accessibility focus drawable. 2547 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2548 TypedValue value = new TypedValue(); 2549 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2550 R.attr.accessibilityFocusedDrawable, value, true); 2551 if (resolved) { 2552 mAttachInfo.mAccessibilityFocusDrawable = 2553 mView.mContext.getResources().getDrawable(value.resourceId); 2554 } 2555 } 2556 return mAttachInfo.mAccessibilityFocusDrawable; 2557 } 2558 return null; 2559 } 2560 2561 void invalidateDisplayLists() { 2562 final ArrayList<DisplayList> displayLists = mDisplayLists; 2563 final int count = displayLists.size(); 2564 2565 for (int i = 0; i < count; i++) { 2566 final DisplayList displayList = displayLists.get(i); 2567 if (displayList.isDirty()) { 2568 displayList.clear(); 2569 } 2570 } 2571 2572 displayLists.clear(); 2573 } 2574 2575 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2576 final View.AttachInfo attachInfo = mAttachInfo; 2577 final Rect ci = attachInfo.mContentInsets; 2578 final Rect vi = attachInfo.mVisibleInsets; 2579 int scrollY = 0; 2580 boolean handled = false; 2581 2582 if (vi.left > ci.left || vi.top > ci.top 2583 || vi.right > ci.right || vi.bottom > ci.bottom) { 2584 // We'll assume that we aren't going to change the scroll 2585 // offset, since we want to avoid that unless it is actually 2586 // going to make the focus visible... otherwise we scroll 2587 // all over the place. 2588 scrollY = mScrollY; 2589 // We can be called for two different situations: during a draw, 2590 // to update the scroll position if the focus has changed (in which 2591 // case 'rectangle' is null), or in response to a 2592 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2593 // is non-null and we just want to scroll to whatever that 2594 // rectangle is). 2595 final View focus = mView.findFocus(); 2596 if (focus == null) { 2597 return false; 2598 } 2599 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2600 if (focus != lastScrolledFocus) { 2601 // If the focus has changed, then ignore any requests to scroll 2602 // to a rectangle; first we want to make sure the entire focus 2603 // view is visible. 2604 rectangle = null; 2605 } 2606 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2607 + " rectangle=" + rectangle + " ci=" + ci 2608 + " vi=" + vi); 2609 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2610 // Optimization: if the focus hasn't changed since last 2611 // time, and no layout has happened, then just leave things 2612 // as they are. 2613 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2614 + mScrollY + " vi=" + vi.toShortString()); 2615 } else { 2616 // We need to determine if the currently focused view is 2617 // within the visible part of the window and, if not, apply 2618 // a pan so it can be seen. 2619 mLastScrolledFocus = new WeakReference<View>(focus); 2620 mScrollMayChange = false; 2621 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2622 // Try to find the rectangle from the focus view. 2623 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2624 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2625 + mView.getWidth() + " h=" + mView.getHeight() 2626 + " ci=" + ci.toShortString() 2627 + " vi=" + vi.toShortString()); 2628 if (rectangle == null) { 2629 focus.getFocusedRect(mTempRect); 2630 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2631 + ": focusRect=" + mTempRect.toShortString()); 2632 if (mView instanceof ViewGroup) { 2633 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2634 focus, mTempRect); 2635 } 2636 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2637 "Focus in window: focusRect=" 2638 + mTempRect.toShortString() 2639 + " visRect=" + mVisRect.toShortString()); 2640 } else { 2641 mTempRect.set(rectangle); 2642 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2643 "Request scroll to rect: " 2644 + mTempRect.toShortString() 2645 + " visRect=" + mVisRect.toShortString()); 2646 } 2647 if (mTempRect.intersect(mVisRect)) { 2648 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2649 "Focus window visible rect: " 2650 + mTempRect.toShortString()); 2651 if (mTempRect.height() > 2652 (mView.getHeight()-vi.top-vi.bottom)) { 2653 // If the focus simply is not going to fit, then 2654 // best is probably just to leave things as-is. 2655 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2656 "Too tall; leaving scrollY=" + scrollY); 2657 } else if ((mTempRect.top-scrollY) < vi.top) { 2658 scrollY -= vi.top - (mTempRect.top-scrollY); 2659 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2660 "Top covered; scrollY=" + scrollY); 2661 } else if ((mTempRect.bottom-scrollY) 2662 > (mView.getHeight()-vi.bottom)) { 2663 scrollY += (mTempRect.bottom-scrollY) 2664 - (mView.getHeight()-vi.bottom); 2665 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2666 "Bottom covered; scrollY=" + scrollY); 2667 } 2668 handled = true; 2669 } 2670 } 2671 } 2672 } 2673 2674 if (scrollY != mScrollY) { 2675 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2676 + mScrollY + " , new=" + scrollY); 2677 if (!immediate && mResizeBuffer == null) { 2678 if (mScroller == null) { 2679 mScroller = new Scroller(mView.getContext()); 2680 } 2681 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2682 } else if (mScroller != null) { 2683 mScroller.abortAnimation(); 2684 } 2685 mScrollY = scrollY; 2686 } 2687 2688 return handled; 2689 } 2690 2691 /** 2692 * @hide 2693 */ 2694 public View getAccessibilityFocusedHost() { 2695 return mAccessibilityFocusedHost; 2696 } 2697 2698 /** 2699 * @hide 2700 */ 2701 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2702 return mAccessibilityFocusedVirtualView; 2703 } 2704 2705 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2706 // If we have a virtual view with accessibility focus we need 2707 // to clear the focus and invalidate the virtual view bounds. 2708 if (mAccessibilityFocusedVirtualView != null) { 2709 2710 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2711 View focusHost = mAccessibilityFocusedHost; 2712 2713 // Wipe the state of the current accessibility focus since 2714 // the call into the provider to clear accessibility focus 2715 // will fire an accessibility event which will end up calling 2716 // this method and we want to have clean state when this 2717 // invocation happens. 2718 mAccessibilityFocusedHost = null; 2719 mAccessibilityFocusedVirtualView = null; 2720 2721 // Clear accessibility focus on the host after clearing state since 2722 // this method may be reentrant. 2723 focusHost.clearAccessibilityFocusNoCallbacks(); 2724 2725 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2726 if (provider != null) { 2727 // Invalidate the area of the cleared accessibility focus. 2728 focusNode.getBoundsInParent(mTempRect); 2729 focusHost.invalidate(mTempRect); 2730 // Clear accessibility focus in the virtual node. 2731 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2732 focusNode.getSourceNodeId()); 2733 provider.performAction(virtualNodeId, 2734 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2735 } 2736 focusNode.recycle(); 2737 } 2738 if (mAccessibilityFocusedHost != null) { 2739 // Clear accessibility focus in the view. 2740 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2741 } 2742 2743 // Set the new focus host and node. 2744 mAccessibilityFocusedHost = view; 2745 mAccessibilityFocusedVirtualView = node; 2746 } 2747 2748 public void requestChildFocus(View child, View focused) { 2749 if (DEBUG_INPUT_RESIZE) { 2750 Log.v(TAG, "Request child focus: focus now " + focused); 2751 } 2752 checkThread(); 2753 scheduleTraversals(); 2754 } 2755 2756 public void clearChildFocus(View child) { 2757 if (DEBUG_INPUT_RESIZE) { 2758 Log.v(TAG, "Clearing child focus"); 2759 } 2760 checkThread(); 2761 scheduleTraversals(); 2762 } 2763 2764 @Override 2765 public ViewParent getParentForAccessibility() { 2766 return null; 2767 } 2768 2769 public void focusableViewAvailable(View v) { 2770 checkThread(); 2771 if (mView != null) { 2772 if (!mView.hasFocus()) { 2773 v.requestFocus(); 2774 } else { 2775 // the one case where will transfer focus away from the current one 2776 // is if the current view is a view group that prefers to give focus 2777 // to its children first AND the view is a descendant of it. 2778 View focused = mView.findFocus(); 2779 if (focused instanceof ViewGroup) { 2780 ViewGroup group = (ViewGroup) focused; 2781 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2782 && isViewDescendantOf(v, focused)) { 2783 v.requestFocus(); 2784 } 2785 } 2786 } 2787 } 2788 } 2789 2790 public void recomputeViewAttributes(View child) { 2791 checkThread(); 2792 if (mView == child) { 2793 mAttachInfo.mRecomputeGlobalAttributes = true; 2794 if (!mWillDrawSoon) { 2795 scheduleTraversals(); 2796 } 2797 } 2798 } 2799 2800 void dispatchDetachedFromWindow() { 2801 if (mView != null && mView.mAttachInfo != null) { 2802 if (mAttachInfo.mHardwareRenderer != null && 2803 mAttachInfo.mHardwareRenderer.isEnabled()) { 2804 mAttachInfo.mHardwareRenderer.validate(); 2805 } 2806 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2807 mView.dispatchDetachedFromWindow(); 2808 } 2809 2810 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2811 mAccessibilityManager.removeAccessibilityStateChangeListener( 2812 mAccessibilityInteractionConnectionManager); 2813 removeSendWindowContentChangedCallback(); 2814 2815 destroyHardwareRenderer(); 2816 2817 setAccessibilityFocus(null, null); 2818 2819 mView = null; 2820 mAttachInfo.mRootView = null; 2821 mAttachInfo.mSurface = null; 2822 2823 mSurface.release(); 2824 2825 if (mInputQueueCallback != null && mInputQueue != null) { 2826 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2827 mInputQueue.dispose(); 2828 mInputQueueCallback = null; 2829 mInputQueue = null; 2830 } 2831 if (mInputEventReceiver != null) { 2832 mInputEventReceiver.dispose(); 2833 mInputEventReceiver = null; 2834 } 2835 try { 2836 mWindowSession.remove(mWindow); 2837 } catch (RemoteException e) { 2838 } 2839 2840 // Dispose the input channel after removing the window so the Window Manager 2841 // doesn't interpret the input channel being closed as an abnormal termination. 2842 if (mInputChannel != null) { 2843 mInputChannel.dispose(); 2844 mInputChannel = null; 2845 } 2846 2847 unscheduleTraversals(); 2848 } 2849 2850 void updateConfiguration(Configuration config, boolean force) { 2851 if (DEBUG_CONFIGURATION) Log.v(TAG, 2852 "Applying new config to window " 2853 + mWindowAttributes.getTitle() 2854 + ": " + config); 2855 2856 CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded(); 2857 if (ci != null) { 2858 config = new Configuration(config); 2859 ci.applyToConfiguration(mNoncompatDensity, config); 2860 } 2861 2862 synchronized (sConfigCallbacks) { 2863 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2864 sConfigCallbacks.get(i).onConfigurationChanged(config); 2865 } 2866 } 2867 if (mView != null) { 2868 // At this point the resources have been updated to 2869 // have the most recent config, whatever that is. Use 2870 // the one in them which may be newer. 2871 config = mView.getResources().getConfiguration(); 2872 if (force || mLastConfiguration.diff(config) != 0) { 2873 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2874 final int currentLayoutDirection = config.getLayoutDirection(); 2875 mLastConfiguration.setTo(config); 2876 if (lastLayoutDirection != currentLayoutDirection && 2877 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2878 mView.setLayoutDirection(currentLayoutDirection); 2879 } 2880 mView.dispatchConfigurationChanged(config); 2881 } 2882 } 2883 } 2884 2885 /** 2886 * Return true if child is an ancestor of parent, (or equal to the parent). 2887 */ 2888 public static boolean isViewDescendantOf(View child, View parent) { 2889 if (child == parent) { 2890 return true; 2891 } 2892 2893 final ViewParent theParent = child.getParent(); 2894 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2895 } 2896 2897 private static void forceLayout(View view) { 2898 view.forceLayout(); 2899 if (view instanceof ViewGroup) { 2900 ViewGroup group = (ViewGroup) view; 2901 final int count = group.getChildCount(); 2902 for (int i = 0; i < count; i++) { 2903 forceLayout(group.getChildAt(i)); 2904 } 2905 } 2906 } 2907 2908 private final static int MSG_INVALIDATE = 1; 2909 private final static int MSG_INVALIDATE_RECT = 2; 2910 private final static int MSG_DIE = 3; 2911 private final static int MSG_RESIZED = 4; 2912 private final static int MSG_RESIZED_REPORT = 5; 2913 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2914 private final static int MSG_DISPATCH_KEY = 7; 2915 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2916 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2917 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2918 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2919 private final static int MSG_CHECK_FOCUS = 13; 2920 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2921 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2922 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2923 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2924 private final static int MSG_UPDATE_CONFIGURATION = 18; 2925 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2926 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2927 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2928 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2929 private final static int MSG_INVALIDATE_WORLD = 23; 2930 private final static int MSG_WINDOW_MOVED = 24; 2931 2932 final class ViewRootHandler extends Handler { 2933 @Override 2934 public String getMessageName(Message message) { 2935 switch (message.what) { 2936 case MSG_INVALIDATE: 2937 return "MSG_INVALIDATE"; 2938 case MSG_INVALIDATE_RECT: 2939 return "MSG_INVALIDATE_RECT"; 2940 case MSG_DIE: 2941 return "MSG_DIE"; 2942 case MSG_RESIZED: 2943 return "MSG_RESIZED"; 2944 case MSG_RESIZED_REPORT: 2945 return "MSG_RESIZED_REPORT"; 2946 case MSG_WINDOW_FOCUS_CHANGED: 2947 return "MSG_WINDOW_FOCUS_CHANGED"; 2948 case MSG_DISPATCH_KEY: 2949 return "MSG_DISPATCH_KEY"; 2950 case MSG_DISPATCH_APP_VISIBILITY: 2951 return "MSG_DISPATCH_APP_VISIBILITY"; 2952 case MSG_DISPATCH_GET_NEW_SURFACE: 2953 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2954 case MSG_DISPATCH_KEY_FROM_IME: 2955 return "MSG_DISPATCH_KEY_FROM_IME"; 2956 case MSG_FINISH_INPUT_CONNECTION: 2957 return "MSG_FINISH_INPUT_CONNECTION"; 2958 case MSG_CHECK_FOCUS: 2959 return "MSG_CHECK_FOCUS"; 2960 case MSG_CLOSE_SYSTEM_DIALOGS: 2961 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2962 case MSG_DISPATCH_DRAG_EVENT: 2963 return "MSG_DISPATCH_DRAG_EVENT"; 2964 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2965 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2966 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2967 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2968 case MSG_UPDATE_CONFIGURATION: 2969 return "MSG_UPDATE_CONFIGURATION"; 2970 case MSG_PROCESS_INPUT_EVENTS: 2971 return "MSG_PROCESS_INPUT_EVENTS"; 2972 case MSG_DISPATCH_SCREEN_STATE: 2973 return "MSG_DISPATCH_SCREEN_STATE"; 2974 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2975 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2976 case MSG_DISPATCH_DONE_ANIMATING: 2977 return "MSG_DISPATCH_DONE_ANIMATING"; 2978 case MSG_WINDOW_MOVED: 2979 return "MSG_WINDOW_MOVED"; 2980 } 2981 return super.getMessageName(message); 2982 } 2983 2984 @Override 2985 public void handleMessage(Message msg) { 2986 switch (msg.what) { 2987 case MSG_INVALIDATE: 2988 ((View) msg.obj).invalidate(); 2989 break; 2990 case MSG_INVALIDATE_RECT: 2991 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2992 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2993 info.recycle(); 2994 break; 2995 case MSG_PROCESS_INPUT_EVENTS: 2996 mProcessInputEventsScheduled = false; 2997 doProcessInputEvents(); 2998 break; 2999 case MSG_DISPATCH_APP_VISIBILITY: 3000 handleAppVisibility(msg.arg1 != 0); 3001 break; 3002 case MSG_DISPATCH_GET_NEW_SURFACE: 3003 handleGetNewSurface(); 3004 break; 3005 case MSG_RESIZED: { 3006 // Recycled in the fall through... 3007 SomeArgs args = (SomeArgs) msg.obj; 3008 if (mWinFrame.equals(args.arg1) 3009 && mPendingOverscanInsets.equals(args.arg5) 3010 && mPendingContentInsets.equals(args.arg2) 3011 && mPendingVisibleInsets.equals(args.arg3) 3012 && args.arg4 == null) { 3013 break; 3014 } 3015 } // fall through... 3016 case MSG_RESIZED_REPORT: 3017 if (mAdded) { 3018 SomeArgs args = (SomeArgs) msg.obj; 3019 3020 Configuration config = (Configuration) args.arg4; 3021 if (config != null) { 3022 updateConfiguration(config, false); 3023 } 3024 3025 mWinFrame.set((Rect) args.arg1); 3026 mPendingOverscanInsets.set((Rect) args.arg5); 3027 mPendingContentInsets.set((Rect) args.arg2); 3028 mPendingVisibleInsets.set((Rect) args.arg3); 3029 3030 args.recycle(); 3031 3032 if (msg.what == MSG_RESIZED_REPORT) { 3033 mReportNextDraw = true; 3034 } 3035 3036 if (mView != null) { 3037 forceLayout(mView); 3038 } 3039 3040 requestLayout(); 3041 } 3042 break; 3043 case MSG_WINDOW_MOVED: 3044 if (mAdded) { 3045 final int w = mWinFrame.width(); 3046 final int h = mWinFrame.height(); 3047 final int l = msg.arg1; 3048 final int t = msg.arg2; 3049 mWinFrame.left = l; 3050 mWinFrame.right = l + w; 3051 mWinFrame.top = t; 3052 mWinFrame.bottom = t + h; 3053 3054 if (mView != null) { 3055 forceLayout(mView); 3056 } 3057 requestLayout(); 3058 } 3059 break; 3060 case MSG_WINDOW_FOCUS_CHANGED: { 3061 if (mAdded) { 3062 boolean hasWindowFocus = msg.arg1 != 0; 3063 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3064 3065 profileRendering(hasWindowFocus); 3066 3067 if (hasWindowFocus) { 3068 boolean inTouchMode = msg.arg2 != 0; 3069 ensureTouchModeLocally(inTouchMode); 3070 3071 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3072 mFullRedrawNeeded = true; 3073 try { 3074 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3075 mWidth, mHeight, mHolder.getSurface()); 3076 } catch (Surface.OutOfResourcesException e) { 3077 Log.e(TAG, "OutOfResourcesException locking surface", e); 3078 try { 3079 if (!mWindowSession.outOfMemory(mWindow)) { 3080 Slog.w(TAG, "No processes killed for memory; killing self"); 3081 Process.killProcess(Process.myPid()); 3082 } 3083 } catch (RemoteException ex) { 3084 } 3085 // Retry in a bit. 3086 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3087 return; 3088 } 3089 } 3090 } 3091 3092 mLastWasImTarget = WindowManager.LayoutParams 3093 .mayUseInputMethod(mWindowAttributes.flags); 3094 3095 InputMethodManager imm = InputMethodManager.peekInstance(); 3096 if (mView != null) { 3097 if (hasWindowFocus && imm != null && mLastWasImTarget) { 3098 imm.startGettingWindowFocus(mView); 3099 } 3100 mAttachInfo.mKeyDispatchState.reset(); 3101 mView.dispatchWindowFocusChanged(hasWindowFocus); 3102 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3103 } 3104 3105 // Note: must be done after the focus change callbacks, 3106 // so all of the view state is set up correctly. 3107 if (hasWindowFocus) { 3108 if (imm != null && mLastWasImTarget) { 3109 imm.onWindowFocus(mView, mView.findFocus(), 3110 mWindowAttributes.softInputMode, 3111 !mHasHadWindowFocus, mWindowAttributes.flags); 3112 } 3113 // Clear the forward bit. We can just do this directly, since 3114 // the window manager doesn't care about it. 3115 mWindowAttributes.softInputMode &= 3116 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3117 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3118 .softInputMode &= 3119 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3120 mHasHadWindowFocus = true; 3121 } 3122 3123 setAccessibilityFocus(null, null); 3124 3125 if (mView != null && mAccessibilityManager.isEnabled()) { 3126 if (hasWindowFocus) { 3127 mView.sendAccessibilityEvent( 3128 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3129 } 3130 } 3131 } 3132 } break; 3133 case MSG_DIE: 3134 doDie(); 3135 break; 3136 case MSG_DISPATCH_KEY: { 3137 KeyEvent event = (KeyEvent)msg.obj; 3138 enqueueInputEvent(event, null, 0, true); 3139 } break; 3140 case MSG_DISPATCH_KEY_FROM_IME: { 3141 if (LOCAL_LOGV) Log.v( 3142 TAG, "Dispatching key " 3143 + msg.obj + " from IME to " + mView); 3144 KeyEvent event = (KeyEvent)msg.obj; 3145 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3146 // The IME is trying to say this event is from the 3147 // system! Bad bad bad! 3148 //noinspection UnusedAssignment 3149 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3150 } 3151 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3152 } break; 3153 case MSG_FINISH_INPUT_CONNECTION: { 3154 InputMethodManager imm = InputMethodManager.peekInstance(); 3155 if (imm != null) { 3156 imm.reportFinishInputConnection((InputConnection)msg.obj); 3157 } 3158 } break; 3159 case MSG_CHECK_FOCUS: { 3160 InputMethodManager imm = InputMethodManager.peekInstance(); 3161 if (imm != null) { 3162 imm.checkFocus(); 3163 } 3164 } break; 3165 case MSG_CLOSE_SYSTEM_DIALOGS: { 3166 if (mView != null) { 3167 mView.onCloseSystemDialogs((String)msg.obj); 3168 } 3169 } break; 3170 case MSG_DISPATCH_DRAG_EVENT: 3171 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3172 DragEvent event = (DragEvent)msg.obj; 3173 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3174 handleDragEvent(event); 3175 } break; 3176 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3177 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3178 } break; 3179 case MSG_UPDATE_CONFIGURATION: { 3180 Configuration config = (Configuration)msg.obj; 3181 if (config.isOtherSeqNewer(mLastConfiguration)) { 3182 config = mLastConfiguration; 3183 } 3184 updateConfiguration(config, false); 3185 } break; 3186 case MSG_DISPATCH_SCREEN_STATE: { 3187 if (mView != null) { 3188 handleScreenStateChange(msg.arg1 == 1); 3189 } 3190 } break; 3191 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3192 setAccessibilityFocus(null, null); 3193 } break; 3194 case MSG_DISPATCH_DONE_ANIMATING: { 3195 handleDispatchDoneAnimating(); 3196 } break; 3197 case MSG_INVALIDATE_WORLD: { 3198 if (mView != null) { 3199 invalidateWorld(mView); 3200 } 3201 } break; 3202 } 3203 } 3204 } 3205 3206 final ViewRootHandler mHandler = new ViewRootHandler(); 3207 3208 /** 3209 * Something in the current window tells us we need to change the touch mode. For 3210 * example, we are not in touch mode, and the user touches the screen. 3211 * 3212 * If the touch mode has changed, tell the window manager, and handle it locally. 3213 * 3214 * @param inTouchMode Whether we want to be in touch mode. 3215 * @return True if the touch mode changed and focus changed was changed as a result 3216 */ 3217 boolean ensureTouchMode(boolean inTouchMode) { 3218 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3219 + "touch mode is " + mAttachInfo.mInTouchMode); 3220 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3221 3222 // tell the window manager 3223 try { 3224 mWindowSession.setInTouchMode(inTouchMode); 3225 } catch (RemoteException e) { 3226 throw new RuntimeException(e); 3227 } 3228 3229 // handle the change 3230 return ensureTouchModeLocally(inTouchMode); 3231 } 3232 3233 /** 3234 * Ensure that the touch mode for this window is set, and if it is changing, 3235 * take the appropriate action. 3236 * @param inTouchMode Whether we want to be in touch mode. 3237 * @return True if the touch mode changed and focus changed was changed as a result 3238 */ 3239 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3240 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3241 + "touch mode is " + mAttachInfo.mInTouchMode); 3242 3243 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3244 3245 mAttachInfo.mInTouchMode = inTouchMode; 3246 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3247 3248 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3249 } 3250 3251 private boolean enterTouchMode() { 3252 if (mView != null) { 3253 if (mView.hasFocus()) { 3254 // note: not relying on mFocusedView here because this could 3255 // be when the window is first being added, and mFocused isn't 3256 // set yet. 3257 final View focused = mView.findFocus(); 3258 if (focused != null && !focused.isFocusableInTouchMode()) { 3259 final ViewGroup ancestorToTakeFocus = 3260 findAncestorToTakeFocusInTouchMode(focused); 3261 if (ancestorToTakeFocus != null) { 3262 // there is an ancestor that wants focus after its descendants that 3263 // is focusable in touch mode.. give it focus 3264 return ancestorToTakeFocus.requestFocus(); 3265 } else { 3266 // nothing appropriate to have focus in touch mode, clear it out 3267 focused.unFocus(); 3268 return true; 3269 } 3270 } 3271 } 3272 } 3273 return false; 3274 } 3275 3276 /** 3277 * Find an ancestor of focused that wants focus after its descendants and is 3278 * focusable in touch mode. 3279 * @param focused The currently focused view. 3280 * @return An appropriate view, or null if no such view exists. 3281 */ 3282 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3283 ViewParent parent = focused.getParent(); 3284 while (parent instanceof ViewGroup) { 3285 final ViewGroup vgParent = (ViewGroup) parent; 3286 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3287 && vgParent.isFocusableInTouchMode()) { 3288 return vgParent; 3289 } 3290 if (vgParent.isRootNamespace()) { 3291 return null; 3292 } else { 3293 parent = vgParent.getParent(); 3294 } 3295 } 3296 return null; 3297 } 3298 3299 private boolean leaveTouchMode() { 3300 if (mView != null) { 3301 if (mView.hasFocus()) { 3302 View focusedView = mView.findFocus(); 3303 if (!(focusedView instanceof ViewGroup)) { 3304 // some view has focus, let it keep it 3305 return false; 3306 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3307 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3308 // some view group has focus, and doesn't prefer its children 3309 // over itself for focus, so let them keep it. 3310 return false; 3311 } 3312 } 3313 3314 // find the best view to give focus to in this brave new non-touch-mode 3315 // world 3316 final View focused = focusSearch(null, View.FOCUS_DOWN); 3317 if (focused != null) { 3318 return focused.requestFocus(View.FOCUS_DOWN); 3319 } 3320 } 3321 return false; 3322 } 3323 3324 /** 3325 * Base class for implementing a stage in the chain of responsibility 3326 * for processing input events. 3327 * <p> 3328 * Events are delivered to the stage by the {@link #deliver} method. The stage 3329 * then has the choice of finishing the event or forwarding it to the next stage. 3330 * </p> 3331 */ 3332 abstract class InputStage { 3333 private final InputStage mNext; 3334 3335 protected static final int FORWARD = 0; 3336 protected static final int FINISH_HANDLED = 1; 3337 protected static final int FINISH_NOT_HANDLED = 2; 3338 3339 /** 3340 * Creates an input stage. 3341 * @param next The next stage to which events should be forwarded. 3342 */ 3343 public InputStage(InputStage next) { 3344 mNext = next; 3345 } 3346 3347 /** 3348 * Delivers an event to be processed. 3349 */ 3350 public final void deliver(QueuedInputEvent q) { 3351 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3352 forward(q); 3353 } else if (mView == null || !mAdded) { 3354 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3355 finish(q, false); 3356 } else if (!mAttachInfo.mHasWindowFocus && 3357 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3358 !isTerminalInputEvent(q.mEvent)) { 3359 // If this is a focused event and the window doesn't currently have input focus, 3360 // then drop this event. This could be an event that came back from the previous 3361 // stage but the window has lost focus in the meantime. 3362 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3363 finish(q, false); 3364 } else { 3365 apply(q, onProcess(q)); 3366 } 3367 } 3368 3369 /** 3370 * Marks the the input event as finished then forwards it to the next stage. 3371 */ 3372 protected void finish(QueuedInputEvent q, boolean handled) { 3373 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3374 if (handled) { 3375 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3376 } 3377 forward(q); 3378 } 3379 3380 /** 3381 * Forwards the event to the next stage. 3382 */ 3383 protected void forward(QueuedInputEvent q) { 3384 onDeliverToNext(q); 3385 } 3386 3387 /** 3388 * Applies a result code from {@link #onProcess} to the specified event. 3389 */ 3390 protected void apply(QueuedInputEvent q, int result) { 3391 if (result == FORWARD) { 3392 forward(q); 3393 } else if (result == FINISH_HANDLED) { 3394 finish(q, true); 3395 } else if (result == FINISH_NOT_HANDLED) { 3396 finish(q, false); 3397 } else { 3398 throw new IllegalArgumentException("Invalid result: " + result); 3399 } 3400 } 3401 3402 /** 3403 * Called when an event is ready to be processed. 3404 * @return A result code indicating how the event was handled. 3405 */ 3406 protected int onProcess(QueuedInputEvent q) { 3407 return FORWARD; 3408 } 3409 3410 /** 3411 * Called when an event is being delivered to the next stage. 3412 */ 3413 protected void onDeliverToNext(QueuedInputEvent q) { 3414 if (mNext != null) { 3415 mNext.deliver(q); 3416 } else { 3417 finishInputEvent(q); 3418 } 3419 } 3420 } 3421 3422 /** 3423 * Base class for implementing an input pipeline stage that supports 3424 * asynchronous and out-of-order processing of input events. 3425 * <p> 3426 * In addition to what a normal input stage can do, an asynchronous 3427 * input stage may also defer an input event that has been delivered to it 3428 * and finish or forward it later. 3429 * </p> 3430 */ 3431 abstract class AsyncInputStage extends InputStage { 3432 private final String mTraceCounter; 3433 3434 private QueuedInputEvent mQueueHead; 3435 private QueuedInputEvent mQueueTail; 3436 private int mQueueLength; 3437 3438 protected static final int DEFER = 3; 3439 3440 /** 3441 * Creates an asynchronous input stage. 3442 * @param next The next stage to which events should be forwarded. 3443 * @param traceCounter The name of a counter to record the size of 3444 * the queue of pending events. 3445 */ 3446 public AsyncInputStage(InputStage next, String traceCounter) { 3447 super(next); 3448 mTraceCounter = traceCounter; 3449 } 3450 3451 /** 3452 * Marks the event as deferred, which is to say that it will be handled 3453 * asynchronously. The caller is responsible for calling {@link #forward} 3454 * or {@link #finish} later when it is done handling the event. 3455 */ 3456 protected void defer(QueuedInputEvent q) { 3457 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3458 enqueue(q); 3459 } 3460 3461 @Override 3462 protected void forward(QueuedInputEvent q) { 3463 // Clear the deferred flag. 3464 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3465 3466 // Fast path if the queue is empty. 3467 QueuedInputEvent curr = mQueueHead; 3468 if (curr == null) { 3469 super.forward(q); 3470 return; 3471 } 3472 3473 // Determine whether the event must be serialized behind any others 3474 // before it can be delivered to the next stage. This is done because 3475 // deferred events might be handled out of order by the stage. 3476 final int deviceId = q.mEvent.getDeviceId(); 3477 QueuedInputEvent prev = null; 3478 boolean blocked = false; 3479 while (curr != null && curr != q) { 3480 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3481 blocked = true; 3482 } 3483 prev = curr; 3484 curr = curr.mNext; 3485 } 3486 3487 // If the event is blocked, then leave it in the queue to be delivered later. 3488 // Note that the event might not yet be in the queue if it was not previously 3489 // deferred so we will enqueue it if needed. 3490 if (blocked) { 3491 if (curr == null) { 3492 enqueue(q); 3493 } 3494 return; 3495 } 3496 3497 // The event is not blocked. Deliver it immediately. 3498 if (curr != null) { 3499 curr = curr.mNext; 3500 dequeue(q, prev); 3501 } 3502 super.forward(q); 3503 3504 // Dequeuing this event may have unblocked successors. Deliver them. 3505 while (curr != null) { 3506 if (deviceId == curr.mEvent.getDeviceId()) { 3507 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3508 break; 3509 } 3510 QueuedInputEvent next = curr.mNext; 3511 dequeue(curr, prev); 3512 super.forward(curr); 3513 curr = next; 3514 } else { 3515 prev = curr; 3516 curr = curr.mNext; 3517 } 3518 } 3519 } 3520 3521 @Override 3522 protected void apply(QueuedInputEvent q, int result) { 3523 if (result == DEFER) { 3524 defer(q); 3525 } else { 3526 super.apply(q, result); 3527 } 3528 } 3529 3530 private void enqueue(QueuedInputEvent q) { 3531 if (mQueueTail == null) { 3532 mQueueHead = q; 3533 mQueueTail = q; 3534 } else { 3535 mQueueTail.mNext = q; 3536 mQueueTail = q; 3537 } 3538 3539 mQueueLength += 1; 3540 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3541 } 3542 3543 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3544 if (prev == null) { 3545 mQueueHead = q.mNext; 3546 } else { 3547 prev.mNext = q.mNext; 3548 } 3549 if (mQueueTail == q) { 3550 mQueueTail = prev; 3551 } 3552 q.mNext = null; 3553 3554 mQueueLength -= 1; 3555 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3556 } 3557 } 3558 3559 /** 3560 * Delivers pre-ime input events to a native activity. 3561 * Does not support pointer events. 3562 */ 3563 final class NativePreImeInputStage extends AsyncInputStage 3564 implements InputQueue.FinishedInputEventCallback { 3565 public NativePreImeInputStage(InputStage next, String traceCounter) { 3566 super(next, traceCounter); 3567 } 3568 3569 @Override 3570 protected int onProcess(QueuedInputEvent q) { 3571 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3572 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3573 return DEFER; 3574 } 3575 return FORWARD; 3576 } 3577 3578 @Override 3579 public void onFinishedInputEvent(Object token, boolean handled) { 3580 QueuedInputEvent q = (QueuedInputEvent)token; 3581 if (handled) { 3582 finish(q, true); 3583 return; 3584 } 3585 forward(q); 3586 } 3587 } 3588 3589 /** 3590 * Delivers pre-ime input events to the view hierarchy. 3591 * Does not support pointer events. 3592 */ 3593 final class ViewPreImeInputStage extends InputStage { 3594 public ViewPreImeInputStage(InputStage next) { 3595 super(next); 3596 } 3597 3598 @Override 3599 protected int onProcess(QueuedInputEvent q) { 3600 if (q.mEvent instanceof KeyEvent) { 3601 return processKeyEvent(q); 3602 } 3603 return FORWARD; 3604 } 3605 3606 private int processKeyEvent(QueuedInputEvent q) { 3607 final KeyEvent event = (KeyEvent)q.mEvent; 3608 if (mView.dispatchKeyEventPreIme(event)) { 3609 return FINISH_HANDLED; 3610 } 3611 return FORWARD; 3612 } 3613 } 3614 3615 /** 3616 * Delivers input events to the ime. 3617 * Does not support pointer events. 3618 */ 3619 final class ImeInputStage extends AsyncInputStage 3620 implements InputMethodManager.FinishedInputEventCallback { 3621 public ImeInputStage(InputStage next, String traceCounter) { 3622 super(next, traceCounter); 3623 } 3624 3625 @Override 3626 protected int onProcess(QueuedInputEvent q) { 3627 if (mLastWasImTarget) { 3628 InputMethodManager imm = InputMethodManager.peekInstance(); 3629 if (imm != null) { 3630 final InputEvent event = q.mEvent; 3631 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3632 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3633 if (result == InputMethodManager.DISPATCH_HANDLED) { 3634 return FINISH_HANDLED; 3635 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3636 return FINISH_NOT_HANDLED; 3637 } else { 3638 return DEFER; // callback will be invoked later 3639 } 3640 } 3641 } 3642 return FORWARD; 3643 } 3644 3645 @Override 3646 public void onFinishedInputEvent(Object token, boolean handled) { 3647 QueuedInputEvent q = (QueuedInputEvent)token; 3648 if (handled) { 3649 finish(q, true); 3650 return; 3651 } 3652 forward(q); 3653 } 3654 } 3655 3656 /** 3657 * Performs early processing of post-ime input events. 3658 */ 3659 final class EarlyPostImeInputStage extends InputStage { 3660 public EarlyPostImeInputStage(InputStage next) { 3661 super(next); 3662 } 3663 3664 @Override 3665 protected int onProcess(QueuedInputEvent q) { 3666 if (q.mEvent instanceof KeyEvent) { 3667 return processKeyEvent(q); 3668 } else { 3669 final int source = q.mEvent.getSource(); 3670 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3671 return processPointerEvent(q); 3672 } 3673 } 3674 return FORWARD; 3675 } 3676 3677 private int processKeyEvent(QueuedInputEvent q) { 3678 final KeyEvent event = (KeyEvent)q.mEvent; 3679 3680 // If the key's purpose is to exit touch mode then we consume it 3681 // and consider it handled. 3682 if (checkForLeavingTouchModeAndConsume(event)) { 3683 return FINISH_HANDLED; 3684 } 3685 3686 // Make sure the fallback event policy sees all keys that will be 3687 // delivered to the view hierarchy. 3688 mFallbackEventHandler.preDispatchKeyEvent(event); 3689 return FORWARD; 3690 } 3691 3692 private int processPointerEvent(QueuedInputEvent q) { 3693 final MotionEvent event = (MotionEvent)q.mEvent; 3694 3695 // Translate the pointer event for compatibility, if needed. 3696 if (mTranslator != null) { 3697 mTranslator.translateEventInScreenToAppWindow(event); 3698 } 3699 3700 // Enter touch mode on down or scroll. 3701 final int action = event.getAction(); 3702 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3703 ensureTouchMode(true); 3704 } 3705 3706 // Offset the scroll position. 3707 if (mCurScrollY != 0) { 3708 event.offsetLocation(0, mCurScrollY); 3709 } 3710 3711 // Remember the touch position for possible drag-initiation. 3712 if (event.isTouchEvent()) { 3713 mLastTouchPoint.x = event.getRawX(); 3714 mLastTouchPoint.y = event.getRawY(); 3715 } 3716 return FORWARD; 3717 } 3718 } 3719 3720 /** 3721 * Delivers post-ime input events to a native activity. 3722 */ 3723 final class NativePostImeInputStage extends AsyncInputStage 3724 implements InputQueue.FinishedInputEventCallback { 3725 public NativePostImeInputStage(InputStage next, String traceCounter) { 3726 super(next, traceCounter); 3727 } 3728 3729 @Override 3730 protected int onProcess(QueuedInputEvent q) { 3731 if (mInputQueue != null) { 3732 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3733 return DEFER; 3734 } 3735 return FORWARD; 3736 } 3737 3738 @Override 3739 public void onFinishedInputEvent(Object token, boolean handled) { 3740 QueuedInputEvent q = (QueuedInputEvent)token; 3741 if (handled) { 3742 finish(q, true); 3743 return; 3744 } 3745 forward(q); 3746 } 3747 } 3748 3749 /** 3750 * Delivers post-ime input events to the view hierarchy. 3751 */ 3752 final class ViewPostImeInputStage extends InputStage { 3753 public ViewPostImeInputStage(InputStage next) { 3754 super(next); 3755 } 3756 3757 @Override 3758 protected int onProcess(QueuedInputEvent q) { 3759 if (q.mEvent instanceof KeyEvent) { 3760 return processKeyEvent(q); 3761 } else { 3762 final int source = q.mEvent.getSource(); 3763 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3764 return processPointerEvent(q); 3765 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3766 return processTrackballEvent(q); 3767 } else { 3768 return processGenericMotionEvent(q); 3769 } 3770 } 3771 } 3772 3773 private int processKeyEvent(QueuedInputEvent q) { 3774 final KeyEvent event = (KeyEvent)q.mEvent; 3775 3776 // Deliver the key to the view hierarchy. 3777 if (mView.dispatchKeyEvent(event)) { 3778 return FINISH_HANDLED; 3779 } 3780 3781 // If the Control modifier is held, try to interpret the key as a shortcut. 3782 if (event.getAction() == KeyEvent.ACTION_DOWN 3783 && event.isCtrlPressed() 3784 && event.getRepeatCount() == 0 3785 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3786 if (mView.dispatchKeyShortcutEvent(event)) { 3787 return FINISH_HANDLED; 3788 } 3789 } 3790 3791 // Apply the fallback event policy. 3792 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3793 return FINISH_HANDLED; 3794 } 3795 3796 // Handle automatic focus changes. 3797 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3798 int direction = 0; 3799 switch (event.getKeyCode()) { 3800 case KeyEvent.KEYCODE_DPAD_LEFT: 3801 if (event.hasNoModifiers()) { 3802 direction = View.FOCUS_LEFT; 3803 } 3804 break; 3805 case KeyEvent.KEYCODE_DPAD_RIGHT: 3806 if (event.hasNoModifiers()) { 3807 direction = View.FOCUS_RIGHT; 3808 } 3809 break; 3810 case KeyEvent.KEYCODE_DPAD_UP: 3811 if (event.hasNoModifiers()) { 3812 direction = View.FOCUS_UP; 3813 } 3814 break; 3815 case KeyEvent.KEYCODE_DPAD_DOWN: 3816 if (event.hasNoModifiers()) { 3817 direction = View.FOCUS_DOWN; 3818 } 3819 break; 3820 case KeyEvent.KEYCODE_TAB: 3821 if (event.hasNoModifiers()) { 3822 direction = View.FOCUS_FORWARD; 3823 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3824 direction = View.FOCUS_BACKWARD; 3825 } 3826 break; 3827 } 3828 if (direction != 0) { 3829 View focused = mView.findFocus(); 3830 if (focused != null) { 3831 View v = focused.focusSearch(direction); 3832 if (v != null && v != focused) { 3833 // do the math the get the interesting rect 3834 // of previous focused into the coord system of 3835 // newly focused view 3836 focused.getFocusedRect(mTempRect); 3837 if (mView instanceof ViewGroup) { 3838 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3839 focused, mTempRect); 3840 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3841 v, mTempRect); 3842 } 3843 if (v.requestFocus(direction, mTempRect)) { 3844 playSoundEffect(SoundEffectConstants 3845 .getContantForFocusDirection(direction)); 3846 return FINISH_HANDLED; 3847 } 3848 } 3849 3850 // Give the focused view a last chance to handle the dpad key. 3851 if (mView.dispatchUnhandledMove(focused, direction)) { 3852 return FINISH_HANDLED; 3853 } 3854 } else { 3855 // find the best view to give focus to in this non-touch-mode with no-focus 3856 View v = focusSearch(null, direction); 3857 if (v != null && v.requestFocus(direction)) { 3858 return FINISH_HANDLED; 3859 } 3860 } 3861 } 3862 } 3863 return FORWARD; 3864 } 3865 3866 private int processPointerEvent(QueuedInputEvent q) { 3867 final MotionEvent event = (MotionEvent)q.mEvent; 3868 3869 if (mView.dispatchPointerEvent(event)) { 3870 return FINISH_HANDLED; 3871 } 3872 return FORWARD; 3873 } 3874 3875 private int processTrackballEvent(QueuedInputEvent q) { 3876 final MotionEvent event = (MotionEvent)q.mEvent; 3877 3878 if (mView.dispatchTrackballEvent(event)) { 3879 return FINISH_HANDLED; 3880 } 3881 return FORWARD; 3882 } 3883 3884 private int processGenericMotionEvent(QueuedInputEvent q) { 3885 final MotionEvent event = (MotionEvent)q.mEvent; 3886 3887 // Deliver the event to the view. 3888 if (mView.dispatchGenericMotionEvent(event)) { 3889 return FINISH_HANDLED; 3890 } 3891 return FORWARD; 3892 } 3893 } 3894 3895 /** 3896 * Performs synthesis of new input events from unhandled input events. 3897 */ 3898 final class SyntheticInputStage extends InputStage { 3899 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3900 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3901 private final SyntheticTouchNavigationHandler mTouchNavigation = 3902 new SyntheticTouchNavigationHandler(); 3903 3904 public SyntheticInputStage() { 3905 super(null); 3906 } 3907 3908 @Override 3909 protected int onProcess(QueuedInputEvent q) { 3910 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3911 if (q.mEvent instanceof MotionEvent) { 3912 final MotionEvent event = (MotionEvent)q.mEvent; 3913 final int source = event.getSource(); 3914 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3915 mTrackball.process(event); 3916 return FINISH_HANDLED; 3917 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3918 mJoystick.process(event); 3919 return FINISH_HANDLED; 3920 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3921 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3922 mTouchNavigation.process(event); 3923 return FINISH_HANDLED; 3924 } 3925 } 3926 return FORWARD; 3927 } 3928 3929 @Override 3930 protected void onDeliverToNext(QueuedInputEvent q) { 3931 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 3932 // Cancel related synthetic events if any prior stage has handled the event. 3933 if (q.mEvent instanceof MotionEvent) { 3934 final MotionEvent event = (MotionEvent)q.mEvent; 3935 final int source = event.getSource(); 3936 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3937 mTrackball.cancel(event); 3938 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3939 mJoystick.cancel(event); 3940 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3941 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3942 mTouchNavigation.cancel(event); 3943 } 3944 } 3945 } 3946 super.onDeliverToNext(q); 3947 } 3948 } 3949 3950 /** 3951 * Creates dpad events from unhandled trackball movements. 3952 */ 3953 final class SyntheticTrackballHandler { 3954 private final TrackballAxis mX = new TrackballAxis(); 3955 private final TrackballAxis mY = new TrackballAxis(); 3956 private long mLastTime; 3957 3958 public void process(MotionEvent event) { 3959 // Translate the trackball event into DPAD keys and try to deliver those. 3960 long curTime = SystemClock.uptimeMillis(); 3961 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 3962 // It has been too long since the last movement, 3963 // so restart at the beginning. 3964 mX.reset(0); 3965 mY.reset(0); 3966 mLastTime = curTime; 3967 } 3968 3969 final int action = event.getAction(); 3970 final int metaState = event.getMetaState(); 3971 switch (action) { 3972 case MotionEvent.ACTION_DOWN: 3973 mX.reset(2); 3974 mY.reset(2); 3975 enqueueInputEvent(new KeyEvent(curTime, curTime, 3976 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3977 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3978 InputDevice.SOURCE_KEYBOARD)); 3979 break; 3980 case MotionEvent.ACTION_UP: 3981 mX.reset(2); 3982 mY.reset(2); 3983 enqueueInputEvent(new KeyEvent(curTime, curTime, 3984 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3985 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3986 InputDevice.SOURCE_KEYBOARD)); 3987 break; 3988 } 3989 3990 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 3991 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 3992 + " move=" + event.getX() 3993 + " / Y=" + mY.position + " step=" 3994 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 3995 + " move=" + event.getY()); 3996 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 3997 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 3998 3999 // Generate DPAD events based on the trackball movement. 4000 // We pick the axis that has moved the most as the direction of 4001 // the DPAD. When we generate DPAD events for one axis, then the 4002 // other axis is reset -- we don't want to perform DPAD jumps due 4003 // to slight movements in the trackball when making major movements 4004 // along the other axis. 4005 int keycode = 0; 4006 int movement = 0; 4007 float accel = 1; 4008 if (xOff > yOff) { 4009 movement = mX.generate(); 4010 if (movement != 0) { 4011 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4012 : KeyEvent.KEYCODE_DPAD_LEFT; 4013 accel = mX.acceleration; 4014 mY.reset(2); 4015 } 4016 } else if (yOff > 0) { 4017 movement = mY.generate(); 4018 if (movement != 0) { 4019 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4020 : KeyEvent.KEYCODE_DPAD_UP; 4021 accel = mY.acceleration; 4022 mX.reset(2); 4023 } 4024 } 4025 4026 if (keycode != 0) { 4027 if (movement < 0) movement = -movement; 4028 int accelMovement = (int)(movement * accel); 4029 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4030 + " accelMovement=" + accelMovement 4031 + " accel=" + accel); 4032 if (accelMovement > movement) { 4033 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4034 + keycode); 4035 movement--; 4036 int repeatCount = accelMovement - movement; 4037 enqueueInputEvent(new KeyEvent(curTime, curTime, 4038 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4039 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4040 InputDevice.SOURCE_KEYBOARD)); 4041 } 4042 while (movement > 0) { 4043 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4044 + keycode); 4045 movement--; 4046 curTime = SystemClock.uptimeMillis(); 4047 enqueueInputEvent(new KeyEvent(curTime, curTime, 4048 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4049 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4050 InputDevice.SOURCE_KEYBOARD)); 4051 enqueueInputEvent(new KeyEvent(curTime, curTime, 4052 KeyEvent.ACTION_UP, keycode, 0, metaState, 4053 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4054 InputDevice.SOURCE_KEYBOARD)); 4055 } 4056 mLastTime = curTime; 4057 } 4058 } 4059 4060 public void cancel(MotionEvent event) { 4061 mLastTime = Integer.MIN_VALUE; 4062 4063 // If we reach this, we consumed a trackball event. 4064 // Because we will not translate the trackball event into a key event, 4065 // touch mode will not exit, so we exit touch mode here. 4066 if (mView != null && mAdded) { 4067 ensureTouchMode(false); 4068 } 4069 } 4070 } 4071 4072 /** 4073 * Maintains state information for a single trackball axis, generating 4074 * discrete (DPAD) movements based on raw trackball motion. 4075 */ 4076 static final class TrackballAxis { 4077 /** 4078 * The maximum amount of acceleration we will apply. 4079 */ 4080 static final float MAX_ACCELERATION = 20; 4081 4082 /** 4083 * The maximum amount of time (in milliseconds) between events in order 4084 * for us to consider the user to be doing fast trackball movements, 4085 * and thus apply an acceleration. 4086 */ 4087 static final long FAST_MOVE_TIME = 150; 4088 4089 /** 4090 * Scaling factor to the time (in milliseconds) between events to how 4091 * much to multiple/divide the current acceleration. When movement 4092 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4093 * FAST_MOVE_TIME it divides it. 4094 */ 4095 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4096 4097 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4098 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4099 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4100 4101 float position; 4102 float acceleration = 1; 4103 long lastMoveTime = 0; 4104 int step; 4105 int dir; 4106 int nonAccelMovement; 4107 4108 void reset(int _step) { 4109 position = 0; 4110 acceleration = 1; 4111 lastMoveTime = 0; 4112 step = _step; 4113 dir = 0; 4114 } 4115 4116 /** 4117 * Add trackball movement into the state. If the direction of movement 4118 * has been reversed, the state is reset before adding the 4119 * movement (so that you don't have to compensate for any previously 4120 * collected movement before see the result of the movement in the 4121 * new direction). 4122 * 4123 * @return Returns the absolute value of the amount of movement 4124 * collected so far. 4125 */ 4126 float collect(float off, long time, String axis) { 4127 long normTime; 4128 if (off > 0) { 4129 normTime = (long)(off * FAST_MOVE_TIME); 4130 if (dir < 0) { 4131 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4132 position = 0; 4133 step = 0; 4134 acceleration = 1; 4135 lastMoveTime = 0; 4136 } 4137 dir = 1; 4138 } else if (off < 0) { 4139 normTime = (long)((-off) * FAST_MOVE_TIME); 4140 if (dir > 0) { 4141 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4142 position = 0; 4143 step = 0; 4144 acceleration = 1; 4145 lastMoveTime = 0; 4146 } 4147 dir = -1; 4148 } else { 4149 normTime = 0; 4150 } 4151 4152 // The number of milliseconds between each movement that is 4153 // considered "normal" and will not result in any acceleration 4154 // or deceleration, scaled by the offset we have here. 4155 if (normTime > 0) { 4156 long delta = time - lastMoveTime; 4157 lastMoveTime = time; 4158 float acc = acceleration; 4159 if (delta < normTime) { 4160 // The user is scrolling rapidly, so increase acceleration. 4161 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4162 if (scale > 1) acc *= scale; 4163 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4164 + off + " normTime=" + normTime + " delta=" + delta 4165 + " scale=" + scale + " acc=" + acc); 4166 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4167 } else { 4168 // The user is scrolling slowly, so decrease acceleration. 4169 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4170 if (scale > 1) acc /= scale; 4171 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4172 + off + " normTime=" + normTime + " delta=" + delta 4173 + " scale=" + scale + " acc=" + acc); 4174 acceleration = acc > 1 ? acc : 1; 4175 } 4176 } 4177 position += off; 4178 return Math.abs(position); 4179 } 4180 4181 /** 4182 * Generate the number of discrete movement events appropriate for 4183 * the currently collected trackball movement. 4184 * 4185 * @return Returns the number of discrete movements, either positive 4186 * or negative, or 0 if there is not enough trackball movement yet 4187 * for a discrete movement. 4188 */ 4189 int generate() { 4190 int movement = 0; 4191 nonAccelMovement = 0; 4192 do { 4193 final int dir = position >= 0 ? 1 : -1; 4194 switch (step) { 4195 // If we are going to execute the first step, then we want 4196 // to do this as soon as possible instead of waiting for 4197 // a full movement, in order to make things look responsive. 4198 case 0: 4199 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4200 return movement; 4201 } 4202 movement += dir; 4203 nonAccelMovement += dir; 4204 step = 1; 4205 break; 4206 // If we have generated the first movement, then we need 4207 // to wait for the second complete trackball motion before 4208 // generating the second discrete movement. 4209 case 1: 4210 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4211 return movement; 4212 } 4213 movement += dir; 4214 nonAccelMovement += dir; 4215 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4216 step = 2; 4217 break; 4218 // After the first two, we generate discrete movements 4219 // consistently with the trackball, applying an acceleration 4220 // if the trackball is moving quickly. This is a simple 4221 // acceleration on top of what we already compute based 4222 // on how quickly the wheel is being turned, to apply 4223 // a longer increasing acceleration to continuous movement 4224 // in one direction. 4225 default: 4226 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4227 return movement; 4228 } 4229 movement += dir; 4230 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4231 float acc = acceleration; 4232 acc *= 1.1f; 4233 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4234 break; 4235 } 4236 } while (true); 4237 } 4238 } 4239 4240 /** 4241 * Creates dpad events from unhandled joystick movements. 4242 */ 4243 final class SyntheticJoystickHandler extends Handler { 4244 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4245 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4246 4247 private int mLastXDirection; 4248 private int mLastYDirection; 4249 private int mLastXKeyCode; 4250 private int mLastYKeyCode; 4251 4252 public SyntheticJoystickHandler() { 4253 super(true); 4254 } 4255 4256 @Override 4257 public void handleMessage(Message msg) { 4258 switch (msg.what) { 4259 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4260 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4261 KeyEvent oldEvent = (KeyEvent)msg.obj; 4262 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4263 SystemClock.uptimeMillis(), 4264 oldEvent.getRepeatCount() + 1); 4265 if (mAttachInfo.mHasWindowFocus) { 4266 enqueueInputEvent(e); 4267 Message m = obtainMessage(msg.what, e); 4268 m.setAsynchronous(true); 4269 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4270 } 4271 } break; 4272 } 4273 } 4274 4275 public void process(MotionEvent event) { 4276 update(event, true); 4277 } 4278 4279 public void cancel(MotionEvent event) { 4280 update(event, false); 4281 } 4282 4283 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4284 final long time = event.getEventTime(); 4285 final int metaState = event.getMetaState(); 4286 final int deviceId = event.getDeviceId(); 4287 final int source = event.getSource(); 4288 4289 int xDirection = joystickAxisValueToDirection( 4290 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4291 if (xDirection == 0) { 4292 xDirection = joystickAxisValueToDirection(event.getX()); 4293 } 4294 4295 int yDirection = joystickAxisValueToDirection( 4296 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4297 if (yDirection == 0) { 4298 yDirection = joystickAxisValueToDirection(event.getY()); 4299 } 4300 4301 if (xDirection != mLastXDirection) { 4302 if (mLastXKeyCode != 0) { 4303 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4304 enqueueInputEvent(new KeyEvent(time, time, 4305 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4306 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4307 mLastXKeyCode = 0; 4308 } 4309 4310 mLastXDirection = xDirection; 4311 4312 if (xDirection != 0 && synthesizeNewKeys) { 4313 mLastXKeyCode = xDirection > 0 4314 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4315 final KeyEvent e = new KeyEvent(time, time, 4316 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4317 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4318 enqueueInputEvent(e); 4319 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4320 m.setAsynchronous(true); 4321 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4322 } 4323 } 4324 4325 if (yDirection != mLastYDirection) { 4326 if (mLastYKeyCode != 0) { 4327 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4328 enqueueInputEvent(new KeyEvent(time, time, 4329 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4330 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4331 mLastYKeyCode = 0; 4332 } 4333 4334 mLastYDirection = yDirection; 4335 4336 if (yDirection != 0 && synthesizeNewKeys) { 4337 mLastYKeyCode = yDirection > 0 4338 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4339 final KeyEvent e = new KeyEvent(time, time, 4340 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4341 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4342 enqueueInputEvent(e); 4343 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4344 m.setAsynchronous(true); 4345 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4346 } 4347 } 4348 } 4349 4350 private int joystickAxisValueToDirection(float value) { 4351 if (value >= 0.5f) { 4352 return 1; 4353 } else if (value <= -0.5f) { 4354 return -1; 4355 } else { 4356 return 0; 4357 } 4358 } 4359 } 4360 4361 /** 4362 * Creates dpad events from unhandled touch navigation movements. 4363 */ 4364 final class SyntheticTouchNavigationHandler extends Handler { 4365 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4366 private static final boolean LOCAL_DEBUG = false; 4367 4368 // Assumed nominal width and height in millimeters of a touch navigation pad, 4369 // if no resolution information is available from the input system. 4370 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4371 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4372 4373 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4374 4375 // Tap timeout in milliseconds. 4376 private static final int TAP_TIMEOUT = 250; 4377 4378 // The maximum distance traveled for a gesture to be considered a tap in millimeters. 4379 private static final int TAP_SLOP_MILLIMETERS = 5; 4380 4381 // The nominal distance traveled to move by one unit. 4382 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4383 4384 // Minimum and maximum fling velocity in ticks per second. 4385 // The minimum velocity should be set such that we perform enough ticks per 4386 // second that the fling appears to be fluid. For example, if we set the minimum 4387 // to 2 ticks per second, then there may be up to half a second delay between the next 4388 // to last and last ticks which is noticeably discrete and jerky. This value should 4389 // probably not be set to anything less than about 4. 4390 // If fling accuracy is a problem then consider tuning the tick distance instead. 4391 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4392 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4393 4394 // Fling velocity decay factor applied after each new key is emitted. 4395 // This parameter controls the deceleration and overall duration of the fling. 4396 // The fling stops automatically when its velocity drops below the minimum 4397 // fling velocity defined above. 4398 private static final float FLING_TICK_DECAY = 0.8f; 4399 4400 /* The input device that we are tracking. */ 4401 4402 private int mCurrentDeviceId = -1; 4403 private int mCurrentSource; 4404 private boolean mCurrentDeviceSupported; 4405 4406 /* Configuration for the current input device. */ 4407 4408 // The tap timeout and scaled slop. 4409 private int mConfigTapTimeout; 4410 private float mConfigTapSlop; 4411 4412 // The scaled tick distance. A movement of this amount should generally translate 4413 // into a single dpad event in a given direction. 4414 private float mConfigTickDistance; 4415 4416 // The minimum and maximum scaled fling velocity. 4417 private float mConfigMinFlingVelocity; 4418 private float mConfigMaxFlingVelocity; 4419 4420 /* Tracking state. */ 4421 4422 // The velocity tracker for detecting flings. 4423 private VelocityTracker mVelocityTracker; 4424 4425 // The active pointer id, or -1 if none. 4426 private int mActivePointerId = -1; 4427 4428 // Time and location where tracking started. 4429 private long mStartTime; 4430 private float mStartX; 4431 private float mStartY; 4432 4433 // Most recently observed position. 4434 private float mLastX; 4435 private float mLastY; 4436 4437 // Accumulated movement delta since the last direction key was sent. 4438 private float mAccumulatedX; 4439 private float mAccumulatedY; 4440 4441 // Set to true if any movement was delivered to the app. 4442 // Implies that tap slop was exceeded. 4443 private boolean mConsumedMovement; 4444 4445 // The most recently sent key down event. 4446 // The keycode remains set until the direction changes or a fling ends 4447 // so that repeated key events may be generated as required. 4448 private long mPendingKeyDownTime; 4449 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4450 private int mPendingKeyRepeatCount; 4451 private int mPendingKeyMetaState; 4452 4453 // The current fling velocity while a fling is in progress. 4454 private boolean mFlinging; 4455 private float mFlingVelocity; 4456 4457 public SyntheticTouchNavigationHandler() { 4458 super(true); 4459 } 4460 4461 public void process(MotionEvent event) { 4462 // Update the current device information. 4463 final long time = event.getEventTime(); 4464 final int deviceId = event.getDeviceId(); 4465 final int source = event.getSource(); 4466 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4467 finishKeys(time); 4468 finishTracking(time); 4469 mCurrentDeviceId = deviceId; 4470 mCurrentSource = source; 4471 mCurrentDeviceSupported = false; 4472 InputDevice device = event.getDevice(); 4473 if (device != null) { 4474 // In order to support an input device, we must know certain 4475 // characteristics about it, such as its size and resolution. 4476 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4477 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4478 if (xRange != null && yRange != null) { 4479 mCurrentDeviceSupported = true; 4480 4481 // Infer the resolution if it not actually known. 4482 float xRes = xRange.getResolution(); 4483 if (xRes <= 0) { 4484 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4485 } 4486 float yRes = yRange.getResolution(); 4487 if (yRes <= 0) { 4488 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4489 } 4490 float nominalRes = (xRes + yRes) * 0.5f; 4491 4492 // Precompute all of the configuration thresholds we will need. 4493 mConfigTapTimeout = TAP_TIMEOUT; 4494 mConfigTapSlop = TAP_SLOP_MILLIMETERS * nominalRes; 4495 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4496 mConfigMinFlingVelocity = 4497 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4498 mConfigMaxFlingVelocity = 4499 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4500 4501 if (LOCAL_DEBUG) { 4502 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4503 + " (" + Integer.toHexString(mCurrentSource) + "): " 4504 + "mConfigTapTimeout=" + mConfigTapTimeout 4505 + ", mConfigTapSlop=" + mConfigTapSlop 4506 + ", mConfigTickDistance=" + mConfigTickDistance 4507 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4508 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4509 } 4510 } 4511 } 4512 } 4513 if (!mCurrentDeviceSupported) { 4514 return; 4515 } 4516 4517 // Handle the event. 4518 final int action = event.getActionMasked(); 4519 switch (action) { 4520 case MotionEvent.ACTION_DOWN: { 4521 boolean caughtFling = mFlinging; 4522 finishKeys(time); 4523 finishTracking(time); 4524 mActivePointerId = event.getPointerId(0); 4525 mVelocityTracker = VelocityTracker.obtain(); 4526 mVelocityTracker.addMovement(event); 4527 mStartTime = time; 4528 mStartX = event.getX(); 4529 mStartY = event.getY(); 4530 mLastX = mStartX; 4531 mLastY = mStartY; 4532 mAccumulatedX = 0; 4533 mAccumulatedY = 0; 4534 4535 // If we caught a fling, then pretend that the tap slop has already 4536 // been exceeded to suppress taps whose only purpose is to stop the fling. 4537 mConsumedMovement = caughtFling; 4538 break; 4539 } 4540 4541 case MotionEvent.ACTION_MOVE: 4542 case MotionEvent.ACTION_UP: { 4543 if (mActivePointerId < 0) { 4544 break; 4545 } 4546 final int index = event.findPointerIndex(mActivePointerId); 4547 if (index < 0) { 4548 finishKeys(time); 4549 finishTracking(time); 4550 break; 4551 } 4552 4553 mVelocityTracker.addMovement(event); 4554 final float x = event.getX(index); 4555 final float y = event.getY(index); 4556 mAccumulatedX += x - mLastX; 4557 mAccumulatedY += y - mLastY; 4558 mLastX = x; 4559 mLastY = y; 4560 4561 // Consume any accumulated movement so far. 4562 final int metaState = event.getMetaState(); 4563 consumeAccumulatedMovement(time, metaState); 4564 4565 // Detect taps and flings. 4566 if (action == MotionEvent.ACTION_UP) { 4567 if (!mConsumedMovement 4568 && Math.hypot(mLastX - mStartX, mLastY - mStartY) < mConfigTapSlop 4569 && time <= mStartTime + mConfigTapTimeout) { 4570 // It's a tap! 4571 finishKeys(time); 4572 sendKeyDownOrRepeat(time, KeyEvent.KEYCODE_DPAD_CENTER, metaState); 4573 sendKeyUp(time); 4574 } else if (mConsumedMovement 4575 && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4576 // It might be a fling. 4577 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4578 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4579 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4580 if (!startFling(time, vx, vy)) { 4581 finishKeys(time); 4582 } 4583 } 4584 finishTracking(time); 4585 } 4586 break; 4587 } 4588 4589 case MotionEvent.ACTION_CANCEL: { 4590 finishKeys(time); 4591 finishTracking(time); 4592 break; 4593 } 4594 } 4595 } 4596 4597 public void cancel(MotionEvent event) { 4598 if (mCurrentDeviceId == event.getDeviceId() 4599 && mCurrentSource == event.getSource()) { 4600 final long time = event.getEventTime(); 4601 finishKeys(time); 4602 finishTracking(time); 4603 } 4604 } 4605 4606 private void finishKeys(long time) { 4607 cancelFling(); 4608 sendKeyUp(time); 4609 } 4610 4611 private void finishTracking(long time) { 4612 if (mActivePointerId >= 0) { 4613 mActivePointerId = -1; 4614 mVelocityTracker.recycle(); 4615 mVelocityTracker = null; 4616 } 4617 } 4618 4619 private void consumeAccumulatedMovement(long time, int metaState) { 4620 final float absX = Math.abs(mAccumulatedX); 4621 final float absY = Math.abs(mAccumulatedY); 4622 if (absX >= absY) { 4623 if (absX >= mConfigTickDistance) { 4624 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4625 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4626 mAccumulatedY = 0; 4627 mConsumedMovement = true; 4628 } 4629 } else { 4630 if (absY >= mConfigTickDistance) { 4631 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4632 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4633 mAccumulatedX = 0; 4634 mConsumedMovement = true; 4635 } 4636 } 4637 } 4638 4639 private float consumeAccumulatedMovement(long time, int metaState, 4640 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4641 while (accumulator <= -mConfigTickDistance) { 4642 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4643 accumulator += mConfigTickDistance; 4644 } 4645 while (accumulator >= mConfigTickDistance) { 4646 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4647 accumulator -= mConfigTickDistance; 4648 } 4649 return accumulator; 4650 } 4651 4652 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4653 if (mPendingKeyCode != keyCode) { 4654 sendKeyUp(time); 4655 mPendingKeyDownTime = time; 4656 mPendingKeyCode = keyCode; 4657 mPendingKeyRepeatCount = 0; 4658 } else { 4659 mPendingKeyRepeatCount += 1; 4660 } 4661 mPendingKeyMetaState = metaState; 4662 4663 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4664 // but it doesn't quite make sense when simulating the events in this way. 4665 if (LOCAL_DEBUG) { 4666 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4667 + ", repeatCount=" + mPendingKeyRepeatCount 4668 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4669 } 4670 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4671 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4672 mPendingKeyMetaState, mCurrentDeviceId, 4673 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4674 } 4675 4676 private void sendKeyUp(long time) { 4677 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4678 if (LOCAL_DEBUG) { 4679 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4680 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4681 } 4682 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4683 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4684 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4685 mCurrentSource)); 4686 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4687 } 4688 } 4689 4690 private boolean startFling(long time, float vx, float vy) { 4691 if (LOCAL_DEBUG) { 4692 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4693 + ", min=" + mConfigMinFlingVelocity); 4694 } 4695 4696 // Flings must be oriented in the same direction as the preceding movements. 4697 switch (mPendingKeyCode) { 4698 case KeyEvent.KEYCODE_DPAD_LEFT: 4699 if (-vx >= mConfigMinFlingVelocity 4700 && Math.abs(vy) < mConfigMinFlingVelocity) { 4701 mFlingVelocity = -vx; 4702 break; 4703 } 4704 return false; 4705 4706 case KeyEvent.KEYCODE_DPAD_RIGHT: 4707 if (vx >= mConfigMinFlingVelocity 4708 && Math.abs(vy) < mConfigMinFlingVelocity) { 4709 mFlingVelocity = vx; 4710 break; 4711 } 4712 return false; 4713 4714 case KeyEvent.KEYCODE_DPAD_UP: 4715 if (-vy >= mConfigMinFlingVelocity 4716 && Math.abs(vx) < mConfigMinFlingVelocity) { 4717 mFlingVelocity = -vy; 4718 break; 4719 } 4720 return false; 4721 4722 case KeyEvent.KEYCODE_DPAD_DOWN: 4723 if (vy >= mConfigMinFlingVelocity 4724 && Math.abs(vx) < mConfigMinFlingVelocity) { 4725 mFlingVelocity = vy; 4726 break; 4727 } 4728 return false; 4729 } 4730 4731 // Post the first fling event. 4732 mFlinging = postFling(time); 4733 return mFlinging; 4734 } 4735 4736 private boolean postFling(long time) { 4737 // The idea here is to estimate the time when the pointer would have 4738 // traveled one tick distance unit given the current fling velocity. 4739 // This effect creates continuity of motion. 4740 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4741 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4742 postAtTime(mFlingRunnable, time + delay); 4743 if (LOCAL_DEBUG) { 4744 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4745 + mFlingVelocity + ", delay=" + delay 4746 + ", keyCode=" + mPendingKeyCode); 4747 } 4748 return true; 4749 } 4750 return false; 4751 } 4752 4753 private void cancelFling() { 4754 if (mFlinging) { 4755 removeCallbacks(mFlingRunnable); 4756 mFlinging = false; 4757 } 4758 } 4759 4760 private final Runnable mFlingRunnable = new Runnable() { 4761 @Override 4762 public void run() { 4763 final long time = SystemClock.uptimeMillis(); 4764 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4765 mFlingVelocity *= FLING_TICK_DECAY; 4766 if (!postFling(time)) { 4767 mFlinging = false; 4768 finishKeys(time); 4769 } 4770 } 4771 }; 4772 } 4773 4774 /** 4775 * Returns true if the key is used for keyboard navigation. 4776 * @param keyEvent The key event. 4777 * @return True if the key is used for keyboard navigation. 4778 */ 4779 private static boolean isNavigationKey(KeyEvent keyEvent) { 4780 switch (keyEvent.getKeyCode()) { 4781 case KeyEvent.KEYCODE_DPAD_LEFT: 4782 case KeyEvent.KEYCODE_DPAD_RIGHT: 4783 case KeyEvent.KEYCODE_DPAD_UP: 4784 case KeyEvent.KEYCODE_DPAD_DOWN: 4785 case KeyEvent.KEYCODE_DPAD_CENTER: 4786 case KeyEvent.KEYCODE_PAGE_UP: 4787 case KeyEvent.KEYCODE_PAGE_DOWN: 4788 case KeyEvent.KEYCODE_MOVE_HOME: 4789 case KeyEvent.KEYCODE_MOVE_END: 4790 case KeyEvent.KEYCODE_TAB: 4791 case KeyEvent.KEYCODE_SPACE: 4792 case KeyEvent.KEYCODE_ENTER: 4793 return true; 4794 } 4795 return false; 4796 } 4797 4798 /** 4799 * Returns true if the key is used for typing. 4800 * @param keyEvent The key event. 4801 * @return True if the key is used for typing. 4802 */ 4803 private static boolean isTypingKey(KeyEvent keyEvent) { 4804 return keyEvent.getUnicodeChar() > 0; 4805 } 4806 4807 /** 4808 * See if the key event means we should leave touch mode (and leave touch mode if so). 4809 * @param event The key event. 4810 * @return Whether this key event should be consumed (meaning the act of 4811 * leaving touch mode alone is considered the event). 4812 */ 4813 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4814 // Only relevant in touch mode. 4815 if (!mAttachInfo.mInTouchMode) { 4816 return false; 4817 } 4818 4819 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4820 final int action = event.getAction(); 4821 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4822 return false; 4823 } 4824 4825 // Don't leave touch mode if the IME told us not to. 4826 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4827 return false; 4828 } 4829 4830 // If the key can be used for keyboard navigation then leave touch mode 4831 // and select a focused view if needed (in ensureTouchMode). 4832 // When a new focused view is selected, we consume the navigation key because 4833 // navigation doesn't make much sense unless a view already has focus so 4834 // the key's purpose is to set focus. 4835 if (isNavigationKey(event)) { 4836 return ensureTouchMode(false); 4837 } 4838 4839 // If the key can be used for typing then leave touch mode 4840 // and select a focused view if needed (in ensureTouchMode). 4841 // Always allow the view to process the typing key. 4842 if (isTypingKey(event)) { 4843 ensureTouchMode(false); 4844 return false; 4845 } 4846 4847 return false; 4848 } 4849 4850 /* drag/drop */ 4851 void setLocalDragState(Object obj) { 4852 mLocalDragState = obj; 4853 } 4854 4855 private void handleDragEvent(DragEvent event) { 4856 // From the root, only drag start/end/location are dispatched. entered/exited 4857 // are determined and dispatched by the viewgroup hierarchy, who then report 4858 // that back here for ultimate reporting back to the framework. 4859 if (mView != null && mAdded) { 4860 final int what = event.mAction; 4861 4862 if (what == DragEvent.ACTION_DRAG_EXITED) { 4863 // A direct EXITED event means that the window manager knows we've just crossed 4864 // a window boundary, so the current drag target within this one must have 4865 // just been exited. Send it the usual notifications and then we're done 4866 // for now. 4867 mView.dispatchDragEvent(event); 4868 } else { 4869 // Cache the drag description when the operation starts, then fill it in 4870 // on subsequent calls as a convenience 4871 if (what == DragEvent.ACTION_DRAG_STARTED) { 4872 mCurrentDragView = null; // Start the current-recipient tracking 4873 mDragDescription = event.mClipDescription; 4874 } else { 4875 event.mClipDescription = mDragDescription; 4876 } 4877 4878 // For events with a [screen] location, translate into window coordinates 4879 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4880 mDragPoint.set(event.mX, event.mY); 4881 if (mTranslator != null) { 4882 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4883 } 4884 4885 if (mCurScrollY != 0) { 4886 mDragPoint.offset(0, mCurScrollY); 4887 } 4888 4889 event.mX = mDragPoint.x; 4890 event.mY = mDragPoint.y; 4891 } 4892 4893 // Remember who the current drag target is pre-dispatch 4894 final View prevDragView = mCurrentDragView; 4895 4896 // Now dispatch the drag/drop event 4897 boolean result = mView.dispatchDragEvent(event); 4898 4899 // If we changed apparent drag target, tell the OS about it 4900 if (prevDragView != mCurrentDragView) { 4901 try { 4902 if (prevDragView != null) { 4903 mWindowSession.dragRecipientExited(mWindow); 4904 } 4905 if (mCurrentDragView != null) { 4906 mWindowSession.dragRecipientEntered(mWindow); 4907 } 4908 } catch (RemoteException e) { 4909 Slog.e(TAG, "Unable to note drag target change"); 4910 } 4911 } 4912 4913 // Report the drop result when we're done 4914 if (what == DragEvent.ACTION_DROP) { 4915 mDragDescription = null; 4916 try { 4917 Log.i(TAG, "Reporting drop result: " + result); 4918 mWindowSession.reportDropResult(mWindow, result); 4919 } catch (RemoteException e) { 4920 Log.e(TAG, "Unable to report drop result"); 4921 } 4922 } 4923 4924 // When the drag operation ends, release any local state object 4925 // that may have been in use 4926 if (what == DragEvent.ACTION_DRAG_ENDED) { 4927 setLocalDragState(null); 4928 } 4929 } 4930 } 4931 event.recycle(); 4932 } 4933 4934 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 4935 if (mSeq != args.seq) { 4936 // The sequence has changed, so we need to update our value and make 4937 // sure to do a traversal afterward so the window manager is given our 4938 // most recent data. 4939 mSeq = args.seq; 4940 mAttachInfo.mForceReportNewAttributes = true; 4941 scheduleTraversals(); 4942 } 4943 if (mView == null) return; 4944 if (args.localChanges != 0) { 4945 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 4946 } 4947 if (mAttachInfo != null) { 4948 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 4949 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 4950 mAttachInfo.mGlobalSystemUiVisibility = visibility; 4951 mView.dispatchSystemUiVisibilityChanged(visibility); 4952 } 4953 } 4954 } 4955 4956 public void handleDispatchDoneAnimating() { 4957 if (mWindowsAnimating) { 4958 mWindowsAnimating = false; 4959 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 4960 scheduleTraversals(); 4961 } 4962 } 4963 } 4964 4965 public void getLastTouchPoint(Point outLocation) { 4966 outLocation.x = (int) mLastTouchPoint.x; 4967 outLocation.y = (int) mLastTouchPoint.y; 4968 } 4969 4970 public void setDragFocus(View newDragTarget) { 4971 if (mCurrentDragView != newDragTarget) { 4972 mCurrentDragView = newDragTarget; 4973 } 4974 } 4975 4976 private AudioManager getAudioManager() { 4977 if (mView == null) { 4978 throw new IllegalStateException("getAudioManager called when there is no mView"); 4979 } 4980 if (mAudioManager == null) { 4981 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 4982 } 4983 return mAudioManager; 4984 } 4985 4986 public AccessibilityInteractionController getAccessibilityInteractionController() { 4987 if (mView == null) { 4988 throw new IllegalStateException("getAccessibilityInteractionController" 4989 + " called when there is no mView"); 4990 } 4991 if (mAccessibilityInteractionController == null) { 4992 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 4993 } 4994 return mAccessibilityInteractionController; 4995 } 4996 4997 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 4998 boolean insetsPending) throws RemoteException { 4999 5000 float appScale = mAttachInfo.mApplicationScale; 5001 boolean restore = false; 5002 if (params != null && mTranslator != null) { 5003 restore = true; 5004 params.backup(); 5005 mTranslator.translateWindowLayout(params); 5006 } 5007 if (params != null) { 5008 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5009 } 5010 mPendingConfiguration.seq = 0; 5011 //Log.d(TAG, ">>>>>> CALLING relayout"); 5012 if (params != null && mOrigWindowType != params.type) { 5013 // For compatibility with old apps, don't crash here. 5014 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5015 Slog.w(TAG, "Window type can not be changed after " 5016 + "the window is added; ignoring change of " + mView); 5017 params.type = mOrigWindowType; 5018 } 5019 } 5020 int relayoutResult = mWindowSession.relayout( 5021 mWindow, mSeq, params, 5022 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5023 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5024 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5025 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5026 mPendingConfiguration, mSurface); 5027 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5028 if (restore) { 5029 params.restore(); 5030 } 5031 5032 if (mTranslator != null) { 5033 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5034 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5035 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5036 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5037 } 5038 return relayoutResult; 5039 } 5040 5041 /** 5042 * {@inheritDoc} 5043 */ 5044 public void playSoundEffect(int effectId) { 5045 checkThread(); 5046 5047 try { 5048 final AudioManager audioManager = getAudioManager(); 5049 5050 switch (effectId) { 5051 case SoundEffectConstants.CLICK: 5052 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5053 return; 5054 case SoundEffectConstants.NAVIGATION_DOWN: 5055 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5056 return; 5057 case SoundEffectConstants.NAVIGATION_LEFT: 5058 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5059 return; 5060 case SoundEffectConstants.NAVIGATION_RIGHT: 5061 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5062 return; 5063 case SoundEffectConstants.NAVIGATION_UP: 5064 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5065 return; 5066 default: 5067 throw new IllegalArgumentException("unknown effect id " + effectId + 5068 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5069 } 5070 } catch (IllegalStateException e) { 5071 // Exception thrown by getAudioManager() when mView is null 5072 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5073 e.printStackTrace(); 5074 } 5075 } 5076 5077 /** 5078 * {@inheritDoc} 5079 */ 5080 public boolean performHapticFeedback(int effectId, boolean always) { 5081 try { 5082 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5083 } catch (RemoteException e) { 5084 return false; 5085 } 5086 } 5087 5088 /** 5089 * {@inheritDoc} 5090 */ 5091 public View focusSearch(View focused, int direction) { 5092 checkThread(); 5093 if (!(mView instanceof ViewGroup)) { 5094 return null; 5095 } 5096 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5097 } 5098 5099 public void debug() { 5100 mView.debug(); 5101 } 5102 5103 public void dumpGfxInfo(int[] info) { 5104 info[0] = info[1] = 0; 5105 if (mView != null) { 5106 getGfxInfo(mView, info); 5107 } 5108 } 5109 5110 private static void getGfxInfo(View view, int[] info) { 5111 DisplayList displayList = view.mDisplayList; 5112 info[0]++; 5113 if (displayList != null) { 5114 info[1] += displayList.getSize(); 5115 } 5116 5117 if (view instanceof ViewGroup) { 5118 ViewGroup group = (ViewGroup) view; 5119 5120 int count = group.getChildCount(); 5121 for (int i = 0; i < count; i++) { 5122 getGfxInfo(group.getChildAt(i), info); 5123 } 5124 } 5125 } 5126 5127 public void die(boolean immediate) { 5128 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5129 // done by dispatchDetachedFromWindow will cause havoc on return. 5130 if (immediate && !mIsInTraversal) { 5131 doDie(); 5132 } else { 5133 if (!mIsDrawing) { 5134 destroyHardwareRenderer(); 5135 } else { 5136 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5137 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5138 } 5139 mHandler.sendEmptyMessage(MSG_DIE); 5140 } 5141 } 5142 5143 void doDie() { 5144 checkThread(); 5145 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5146 synchronized (this) { 5147 if (mAdded) { 5148 dispatchDetachedFromWindow(); 5149 } 5150 5151 if (mAdded && !mFirst) { 5152 invalidateDisplayLists(); 5153 destroyHardwareRenderer(); 5154 5155 if (mView != null) { 5156 int viewVisibility = mView.getVisibility(); 5157 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5158 if (mWindowAttributesChanged || viewVisibilityChanged) { 5159 // If layout params have been changed, first give them 5160 // to the window manager to make sure it has the correct 5161 // animation info. 5162 try { 5163 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5164 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5165 mWindowSession.finishDrawing(mWindow); 5166 } 5167 } catch (RemoteException e) { 5168 } 5169 } 5170 5171 mSurface.release(); 5172 } 5173 } 5174 5175 mAdded = false; 5176 } 5177 } 5178 5179 public void requestUpdateConfiguration(Configuration config) { 5180 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5181 mHandler.sendMessage(msg); 5182 } 5183 5184 public void loadSystemProperties() { 5185 mHandler.post(new Runnable() { 5186 @Override 5187 public void run() { 5188 // Profiling 5189 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5190 profileRendering(mAttachInfo.mHasWindowFocus); 5191 5192 // Hardware rendering 5193 if (mAttachInfo.mHardwareRenderer != null) { 5194 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5195 invalidate(); 5196 } 5197 } 5198 5199 // Layout debugging 5200 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5201 if (layout != mAttachInfo.mDebugLayout) { 5202 mAttachInfo.mDebugLayout = layout; 5203 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5204 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5205 } 5206 } 5207 } 5208 }); 5209 } 5210 5211 private void destroyHardwareRenderer() { 5212 AttachInfo attachInfo = mAttachInfo; 5213 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5214 5215 if (hardwareRenderer != null) { 5216 if (mView != null) { 5217 hardwareRenderer.destroyHardwareResources(mView); 5218 } 5219 hardwareRenderer.destroy(true); 5220 hardwareRenderer.setRequested(false); 5221 5222 attachInfo.mHardwareRenderer = null; 5223 attachInfo.mHardwareAccelerated = false; 5224 } 5225 } 5226 5227 public void dispatchFinishInputConnection(InputConnection connection) { 5228 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5229 mHandler.sendMessage(msg); 5230 } 5231 5232 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5233 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5234 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5235 + " contentInsets=" + contentInsets.toShortString() 5236 + " visibleInsets=" + visibleInsets.toShortString() 5237 + " reportDraw=" + reportDraw); 5238 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5239 if (mTranslator != null) { 5240 mTranslator.translateRectInScreenToAppWindow(frame); 5241 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5242 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5243 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5244 } 5245 SomeArgs args = SomeArgs.obtain(); 5246 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5247 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5248 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5249 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5250 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5251 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5252 msg.obj = args; 5253 mHandler.sendMessage(msg); 5254 } 5255 5256 public void dispatchMoved(int newX, int newY) { 5257 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5258 if (mTranslator != null) { 5259 PointF point = new PointF(newX, newY); 5260 mTranslator.translatePointInScreenToAppWindow(point); 5261 newX = (int) (point.x + 0.5); 5262 newY = (int) (point.y + 0.5); 5263 } 5264 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5265 mHandler.sendMessage(msg); 5266 } 5267 5268 /** 5269 * Represents a pending input event that is waiting in a queue. 5270 * 5271 * Input events are processed in serial order by the timestamp specified by 5272 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5273 * one input event to the application at a time and waits for the application 5274 * to finish handling it before delivering the next one. 5275 * 5276 * However, because the application or IME can synthesize and inject multiple 5277 * key events at a time without going through the input dispatcher, we end up 5278 * needing a queue on the application's side. 5279 */ 5280 private static final class QueuedInputEvent { 5281 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5282 public static final int FLAG_DEFERRED = 1 << 1; 5283 public static final int FLAG_FINISHED = 1 << 2; 5284 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5285 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5286 5287 public QueuedInputEvent mNext; 5288 5289 public InputEvent mEvent; 5290 public InputEventReceiver mReceiver; 5291 public int mFlags; 5292 5293 public boolean shouldSkipIme() { 5294 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5295 return true; 5296 } 5297 return mEvent instanceof MotionEvent 5298 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5299 } 5300 } 5301 5302 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5303 InputEventReceiver receiver, int flags) { 5304 QueuedInputEvent q = mQueuedInputEventPool; 5305 if (q != null) { 5306 mQueuedInputEventPoolSize -= 1; 5307 mQueuedInputEventPool = q.mNext; 5308 q.mNext = null; 5309 } else { 5310 q = new QueuedInputEvent(); 5311 } 5312 5313 q.mEvent = event; 5314 q.mReceiver = receiver; 5315 q.mFlags = flags; 5316 return q; 5317 } 5318 5319 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5320 q.mEvent = null; 5321 q.mReceiver = null; 5322 5323 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5324 mQueuedInputEventPoolSize += 1; 5325 q.mNext = mQueuedInputEventPool; 5326 mQueuedInputEventPool = q; 5327 } 5328 } 5329 5330 void enqueueInputEvent(InputEvent event) { 5331 enqueueInputEvent(event, null, 0, false); 5332 } 5333 5334 void enqueueInputEvent(InputEvent event, 5335 InputEventReceiver receiver, int flags, boolean processImmediately) { 5336 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5337 5338 // Always enqueue the input event in order, regardless of its time stamp. 5339 // We do this because the application or the IME may inject key events 5340 // in response to touch events and we want to ensure that the injected keys 5341 // are processed in the order they were received and we cannot trust that 5342 // the time stamp of injected events are monotonic. 5343 QueuedInputEvent last = mPendingInputEventTail; 5344 if (last == null) { 5345 mPendingInputEventHead = q; 5346 mPendingInputEventTail = q; 5347 } else { 5348 last.mNext = q; 5349 mPendingInputEventTail = q; 5350 } 5351 mPendingInputEventCount += 1; 5352 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5353 mPendingInputEventCount); 5354 5355 if (processImmediately) { 5356 doProcessInputEvents(); 5357 } else { 5358 scheduleProcessInputEvents(); 5359 } 5360 } 5361 5362 private void scheduleProcessInputEvents() { 5363 if (!mProcessInputEventsScheduled) { 5364 mProcessInputEventsScheduled = true; 5365 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5366 msg.setAsynchronous(true); 5367 mHandler.sendMessage(msg); 5368 } 5369 } 5370 5371 void doProcessInputEvents() { 5372 // Deliver all pending input events in the queue. 5373 while (mPendingInputEventHead != null) { 5374 QueuedInputEvent q = mPendingInputEventHead; 5375 mPendingInputEventHead = q.mNext; 5376 if (mPendingInputEventHead == null) { 5377 mPendingInputEventTail = null; 5378 } 5379 q.mNext = null; 5380 5381 mPendingInputEventCount -= 1; 5382 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5383 mPendingInputEventCount); 5384 5385 deliverInputEvent(q); 5386 } 5387 5388 // We are done processing all input events that we can process right now 5389 // so we can clear the pending flag immediately. 5390 if (mProcessInputEventsScheduled) { 5391 mProcessInputEventsScheduled = false; 5392 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5393 } 5394 } 5395 5396 private void deliverInputEvent(QueuedInputEvent q) { 5397 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5398 try { 5399 if (mInputEventConsistencyVerifier != null) { 5400 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5401 } 5402 5403 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5404 if (stage != null) { 5405 stage.deliver(q); 5406 } else { 5407 finishInputEvent(q); 5408 } 5409 } finally { 5410 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5411 } 5412 } 5413 5414 private void finishInputEvent(QueuedInputEvent q) { 5415 if (q.mReceiver != null) { 5416 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5417 q.mReceiver.finishInputEvent(q.mEvent, handled); 5418 } else { 5419 q.mEvent.recycleIfNeededAfterDispatch(); 5420 } 5421 5422 recycleQueuedInputEvent(q); 5423 } 5424 5425 static boolean isTerminalInputEvent(InputEvent event) { 5426 if (event instanceof KeyEvent) { 5427 final KeyEvent keyEvent = (KeyEvent)event; 5428 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5429 } else { 5430 final MotionEvent motionEvent = (MotionEvent)event; 5431 final int action = motionEvent.getAction(); 5432 return action == MotionEvent.ACTION_UP 5433 || action == MotionEvent.ACTION_CANCEL 5434 || action == MotionEvent.ACTION_HOVER_EXIT; 5435 } 5436 } 5437 5438 void scheduleConsumeBatchedInput() { 5439 if (!mConsumeBatchedInputScheduled) { 5440 mConsumeBatchedInputScheduled = true; 5441 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5442 mConsumedBatchedInputRunnable, null); 5443 } 5444 } 5445 5446 void unscheduleConsumeBatchedInput() { 5447 if (mConsumeBatchedInputScheduled) { 5448 mConsumeBatchedInputScheduled = false; 5449 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5450 mConsumedBatchedInputRunnable, null); 5451 } 5452 } 5453 5454 void doConsumeBatchedInput(long frameTimeNanos) { 5455 if (mConsumeBatchedInputScheduled) { 5456 mConsumeBatchedInputScheduled = false; 5457 if (mInputEventReceiver != null) { 5458 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5459 } 5460 doProcessInputEvents(); 5461 } 5462 } 5463 5464 final class TraversalRunnable implements Runnable { 5465 @Override 5466 public void run() { 5467 doTraversal(); 5468 } 5469 } 5470 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5471 5472 final class WindowInputEventReceiver extends InputEventReceiver { 5473 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5474 super(inputChannel, looper); 5475 } 5476 5477 @Override 5478 public void onInputEvent(InputEvent event) { 5479 enqueueInputEvent(event, this, 0, true); 5480 } 5481 5482 @Override 5483 public void onBatchedInputEventPending() { 5484 scheduleConsumeBatchedInput(); 5485 } 5486 5487 @Override 5488 public void dispose() { 5489 unscheduleConsumeBatchedInput(); 5490 super.dispose(); 5491 } 5492 } 5493 WindowInputEventReceiver mInputEventReceiver; 5494 5495 final class ConsumeBatchedInputRunnable implements Runnable { 5496 @Override 5497 public void run() { 5498 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5499 } 5500 } 5501 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5502 new ConsumeBatchedInputRunnable(); 5503 boolean mConsumeBatchedInputScheduled; 5504 5505 final class InvalidateOnAnimationRunnable implements Runnable { 5506 private boolean mPosted; 5507 private ArrayList<View> mViews = new ArrayList<View>(); 5508 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5509 new ArrayList<AttachInfo.InvalidateInfo>(); 5510 private View[] mTempViews; 5511 private AttachInfo.InvalidateInfo[] mTempViewRects; 5512 5513 public void addView(View view) { 5514 synchronized (this) { 5515 mViews.add(view); 5516 postIfNeededLocked(); 5517 } 5518 } 5519 5520 public void addViewRect(AttachInfo.InvalidateInfo info) { 5521 synchronized (this) { 5522 mViewRects.add(info); 5523 postIfNeededLocked(); 5524 } 5525 } 5526 5527 public void removeView(View view) { 5528 synchronized (this) { 5529 mViews.remove(view); 5530 5531 for (int i = mViewRects.size(); i-- > 0; ) { 5532 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5533 if (info.target == view) { 5534 mViewRects.remove(i); 5535 info.recycle(); 5536 } 5537 } 5538 5539 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5540 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5541 mPosted = false; 5542 } 5543 } 5544 } 5545 5546 @Override 5547 public void run() { 5548 final int viewCount; 5549 final int viewRectCount; 5550 synchronized (this) { 5551 mPosted = false; 5552 5553 viewCount = mViews.size(); 5554 if (viewCount != 0) { 5555 mTempViews = mViews.toArray(mTempViews != null 5556 ? mTempViews : new View[viewCount]); 5557 mViews.clear(); 5558 } 5559 5560 viewRectCount = mViewRects.size(); 5561 if (viewRectCount != 0) { 5562 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5563 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5564 mViewRects.clear(); 5565 } 5566 } 5567 5568 for (int i = 0; i < viewCount; i++) { 5569 mTempViews[i].invalidate(); 5570 mTempViews[i] = null; 5571 } 5572 5573 for (int i = 0; i < viewRectCount; i++) { 5574 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5575 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5576 info.recycle(); 5577 } 5578 } 5579 5580 private void postIfNeededLocked() { 5581 if (!mPosted) { 5582 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5583 mPosted = true; 5584 } 5585 } 5586 } 5587 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5588 new InvalidateOnAnimationRunnable(); 5589 5590 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5591 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5592 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5593 } 5594 5595 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5596 long delayMilliseconds) { 5597 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5598 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5599 } 5600 5601 public void dispatchInvalidateOnAnimation(View view) { 5602 mInvalidateOnAnimationRunnable.addView(view); 5603 } 5604 5605 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5606 mInvalidateOnAnimationRunnable.addViewRect(info); 5607 } 5608 5609 public void enqueueDisplayList(DisplayList displayList) { 5610 mDisplayLists.add(displayList); 5611 } 5612 5613 public void cancelInvalidate(View view) { 5614 mHandler.removeMessages(MSG_INVALIDATE, view); 5615 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5616 // them to the pool 5617 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5618 mInvalidateOnAnimationRunnable.removeView(view); 5619 } 5620 5621 public void dispatchKey(KeyEvent event) { 5622 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 5623 msg.setAsynchronous(true); 5624 mHandler.sendMessage(msg); 5625 } 5626 5627 public void dispatchKeyFromIme(KeyEvent event) { 5628 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5629 msg.setAsynchronous(true); 5630 mHandler.sendMessage(msg); 5631 } 5632 5633 public void dispatchUnhandledKey(KeyEvent event) { 5634 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5635 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5636 final int keyCode = event.getKeyCode(); 5637 final int metaState = event.getMetaState(); 5638 5639 // Check for fallback actions specified by the key character map. 5640 KeyCharacterMap.FallbackAction fallbackAction = 5641 kcm.getFallbackAction(keyCode, metaState); 5642 if (fallbackAction != null) { 5643 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5644 KeyEvent fallbackEvent = KeyEvent.obtain( 5645 event.getDownTime(), event.getEventTime(), 5646 event.getAction(), fallbackAction.keyCode, 5647 event.getRepeatCount(), fallbackAction.metaState, 5648 event.getDeviceId(), event.getScanCode(), 5649 flags, event.getSource(), null); 5650 fallbackAction.recycle(); 5651 5652 dispatchKey(fallbackEvent); 5653 } 5654 } 5655 } 5656 5657 public void dispatchAppVisibility(boolean visible) { 5658 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5659 msg.arg1 = visible ? 1 : 0; 5660 mHandler.sendMessage(msg); 5661 } 5662 5663 public void dispatchScreenStateChange(boolean on) { 5664 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5665 msg.arg1 = on ? 1 : 0; 5666 mHandler.sendMessage(msg); 5667 } 5668 5669 public void dispatchGetNewSurface() { 5670 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5671 mHandler.sendMessage(msg); 5672 } 5673 5674 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5675 Message msg = Message.obtain(); 5676 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5677 msg.arg1 = hasFocus ? 1 : 0; 5678 msg.arg2 = inTouchMode ? 1 : 0; 5679 mHandler.sendMessage(msg); 5680 } 5681 5682 public void dispatchCloseSystemDialogs(String reason) { 5683 Message msg = Message.obtain(); 5684 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5685 msg.obj = reason; 5686 mHandler.sendMessage(msg); 5687 } 5688 5689 public void dispatchDragEvent(DragEvent event) { 5690 final int what; 5691 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5692 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5693 mHandler.removeMessages(what); 5694 } else { 5695 what = MSG_DISPATCH_DRAG_EVENT; 5696 } 5697 Message msg = mHandler.obtainMessage(what, event); 5698 mHandler.sendMessage(msg); 5699 } 5700 5701 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5702 int localValue, int localChanges) { 5703 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5704 args.seq = seq; 5705 args.globalVisibility = globalVisibility; 5706 args.localValue = localValue; 5707 args.localChanges = localChanges; 5708 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5709 } 5710 5711 public void dispatchDoneAnimating() { 5712 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5713 } 5714 5715 public void dispatchCheckFocus() { 5716 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5717 // This will result in a call to checkFocus() below. 5718 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5719 } 5720 } 5721 5722 /** 5723 * Post a callback to send a 5724 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5725 * This event is send at most once every 5726 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5727 */ 5728 private void postSendWindowContentChangedCallback(View source) { 5729 if (mSendWindowContentChangedAccessibilityEvent == null) { 5730 mSendWindowContentChangedAccessibilityEvent = 5731 new SendWindowContentChangedAccessibilityEvent(); 5732 } 5733 View oldSource = mSendWindowContentChangedAccessibilityEvent.mSource; 5734 if (oldSource == null) { 5735 mSendWindowContentChangedAccessibilityEvent.mSource = source; 5736 mHandler.postDelayed(mSendWindowContentChangedAccessibilityEvent, 5737 ViewConfiguration.getSendRecurringAccessibilityEventsInterval()); 5738 } else { 5739 mSendWindowContentChangedAccessibilityEvent.mSource = 5740 getCommonPredecessor(oldSource, source); 5741 } 5742 } 5743 5744 /** 5745 * Remove a posted callback to send a 5746 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5747 */ 5748 private void removeSendWindowContentChangedCallback() { 5749 if (mSendWindowContentChangedAccessibilityEvent != null) { 5750 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5751 } 5752 } 5753 5754 public boolean showContextMenuForChild(View originalView) { 5755 return false; 5756 } 5757 5758 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5759 return null; 5760 } 5761 5762 public void createContextMenu(ContextMenu menu) { 5763 } 5764 5765 public void childDrawableStateChanged(View child) { 5766 } 5767 5768 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5769 if (mView == null) { 5770 return false; 5771 } 5772 // Intercept accessibility focus events fired by virtual nodes to keep 5773 // track of accessibility focus position in such nodes. 5774 final int eventType = event.getEventType(); 5775 switch (eventType) { 5776 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5777 final long sourceNodeId = event.getSourceNodeId(); 5778 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5779 sourceNodeId); 5780 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5781 if (source != null) { 5782 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5783 if (provider != null) { 5784 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5785 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5786 setAccessibilityFocus(source, node); 5787 } 5788 } 5789 } break; 5790 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5791 final long sourceNodeId = event.getSourceNodeId(); 5792 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5793 sourceNodeId); 5794 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5795 if (source != null) { 5796 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5797 if (provider != null) { 5798 setAccessibilityFocus(null, null); 5799 } 5800 } 5801 } break; 5802 } 5803 mAccessibilityManager.sendAccessibilityEvent(event); 5804 return true; 5805 } 5806 5807 @Override 5808 public void childAccessibilityStateChanged(View child) { 5809 postSendWindowContentChangedCallback(child); 5810 } 5811 5812 @Override 5813 public boolean canResolveLayoutDirection() { 5814 return true; 5815 } 5816 5817 @Override 5818 public boolean isLayoutDirectionResolved() { 5819 return true; 5820 } 5821 5822 @Override 5823 public int getLayoutDirection() { 5824 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5825 } 5826 5827 @Override 5828 public boolean canResolveTextDirection() { 5829 return true; 5830 } 5831 5832 @Override 5833 public boolean isTextDirectionResolved() { 5834 return true; 5835 } 5836 5837 @Override 5838 public int getTextDirection() { 5839 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5840 } 5841 5842 @Override 5843 public boolean canResolveTextAlignment() { 5844 return true; 5845 } 5846 5847 @Override 5848 public boolean isTextAlignmentResolved() { 5849 return true; 5850 } 5851 5852 @Override 5853 public int getTextAlignment() { 5854 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5855 } 5856 5857 private View getCommonPredecessor(View first, View second) { 5858 if (mAttachInfo != null) { 5859 if (mTempHashSet == null) { 5860 mTempHashSet = new HashSet<View>(); 5861 } 5862 HashSet<View> seen = mTempHashSet; 5863 seen.clear(); 5864 View firstCurrent = first; 5865 while (firstCurrent != null) { 5866 seen.add(firstCurrent); 5867 ViewParent firstCurrentParent = firstCurrent.mParent; 5868 if (firstCurrentParent instanceof View) { 5869 firstCurrent = (View) firstCurrentParent; 5870 } else { 5871 firstCurrent = null; 5872 } 5873 } 5874 View secondCurrent = second; 5875 while (secondCurrent != null) { 5876 if (seen.contains(secondCurrent)) { 5877 seen.clear(); 5878 return secondCurrent; 5879 } 5880 ViewParent secondCurrentParent = secondCurrent.mParent; 5881 if (secondCurrentParent instanceof View) { 5882 secondCurrent = (View) secondCurrentParent; 5883 } else { 5884 secondCurrent = null; 5885 } 5886 } 5887 seen.clear(); 5888 } 5889 return null; 5890 } 5891 5892 void checkThread() { 5893 if (mThread != Thread.currentThread()) { 5894 throw new CalledFromWrongThreadException( 5895 "Only the original thread that created a view hierarchy can touch its views."); 5896 } 5897 } 5898 5899 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 5900 // ViewAncestor never intercepts touch event, so this can be a no-op 5901 } 5902 5903 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 5904 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 5905 if (rectangle != null) { 5906 mTempRect.set(rectangle); 5907 mTempRect.offset(0, -mCurScrollY); 5908 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 5909 try { 5910 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 5911 } catch (RemoteException re) { 5912 /* ignore */ 5913 } 5914 } 5915 return scrolled; 5916 } 5917 5918 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 5919 // Do nothing. 5920 } 5921 5922 class TakenSurfaceHolder extends BaseSurfaceHolder { 5923 @Override 5924 public boolean onAllowLockCanvas() { 5925 return mDrawingAllowed; 5926 } 5927 5928 @Override 5929 public void onRelayoutContainer() { 5930 // Not currently interesting -- from changing between fixed and layout size. 5931 } 5932 5933 public void setFormat(int format) { 5934 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 5935 } 5936 5937 public void setType(int type) { 5938 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 5939 } 5940 5941 @Override 5942 public void onUpdateSurface() { 5943 // We take care of format and type changes on our own. 5944 throw new IllegalStateException("Shouldn't be here"); 5945 } 5946 5947 public boolean isCreating() { 5948 return mIsCreating; 5949 } 5950 5951 @Override 5952 public void setFixedSize(int width, int height) { 5953 throw new UnsupportedOperationException( 5954 "Currently only support sizing from layout"); 5955 } 5956 5957 public void setKeepScreenOn(boolean screenOn) { 5958 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 5959 } 5960 } 5961 5962 static class W extends IWindow.Stub { 5963 private final WeakReference<ViewRootImpl> mViewAncestor; 5964 private final IWindowSession mWindowSession; 5965 5966 W(ViewRootImpl viewAncestor) { 5967 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 5968 mWindowSession = viewAncestor.mWindowSession; 5969 } 5970 5971 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 5972 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5973 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5974 if (viewAncestor != null) { 5975 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 5976 visibleInsets, reportDraw, newConfig); 5977 } 5978 } 5979 5980 @Override 5981 public void moved(int newX, int newY) { 5982 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5983 if (viewAncestor != null) { 5984 viewAncestor.dispatchMoved(newX, newY); 5985 } 5986 } 5987 5988 public void dispatchAppVisibility(boolean visible) { 5989 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5990 if (viewAncestor != null) { 5991 viewAncestor.dispatchAppVisibility(visible); 5992 } 5993 } 5994 5995 public void dispatchScreenState(boolean on) { 5996 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5997 if (viewAncestor != null) { 5998 viewAncestor.dispatchScreenStateChange(on); 5999 } 6000 } 6001 6002 public void dispatchGetNewSurface() { 6003 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6004 if (viewAncestor != null) { 6005 viewAncestor.dispatchGetNewSurface(); 6006 } 6007 } 6008 6009 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6010 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6011 if (viewAncestor != null) { 6012 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6013 } 6014 } 6015 6016 private static int checkCallingPermission(String permission) { 6017 try { 6018 return ActivityManagerNative.getDefault().checkPermission( 6019 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6020 } catch (RemoteException e) { 6021 return PackageManager.PERMISSION_DENIED; 6022 } 6023 } 6024 6025 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6026 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6027 if (viewAncestor != null) { 6028 final View view = viewAncestor.mView; 6029 if (view != null) { 6030 if (checkCallingPermission(Manifest.permission.DUMP) != 6031 PackageManager.PERMISSION_GRANTED) { 6032 throw new SecurityException("Insufficient permissions to invoke" 6033 + " executeCommand() from pid=" + Binder.getCallingPid() 6034 + ", uid=" + Binder.getCallingUid()); 6035 } 6036 6037 OutputStream clientStream = null; 6038 try { 6039 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6040 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6041 } catch (IOException e) { 6042 e.printStackTrace(); 6043 } finally { 6044 if (clientStream != null) { 6045 try { 6046 clientStream.close(); 6047 } catch (IOException e) { 6048 e.printStackTrace(); 6049 } 6050 } 6051 } 6052 } 6053 } 6054 } 6055 6056 public void closeSystemDialogs(String reason) { 6057 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6058 if (viewAncestor != null) { 6059 viewAncestor.dispatchCloseSystemDialogs(reason); 6060 } 6061 } 6062 6063 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6064 boolean sync) { 6065 if (sync) { 6066 try { 6067 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6068 } catch (RemoteException e) { 6069 } 6070 } 6071 } 6072 6073 public void dispatchWallpaperCommand(String action, int x, int y, 6074 int z, Bundle extras, boolean sync) { 6075 if (sync) { 6076 try { 6077 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6078 } catch (RemoteException e) { 6079 } 6080 } 6081 } 6082 6083 /* Drag/drop */ 6084 public void dispatchDragEvent(DragEvent event) { 6085 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6086 if (viewAncestor != null) { 6087 viewAncestor.dispatchDragEvent(event); 6088 } 6089 } 6090 6091 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6092 int localValue, int localChanges) { 6093 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6094 if (viewAncestor != null) { 6095 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6096 localValue, localChanges); 6097 } 6098 } 6099 6100 public void doneAnimating() { 6101 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6102 if (viewAncestor != null) { 6103 viewAncestor.dispatchDoneAnimating(); 6104 } 6105 } 6106 } 6107 6108 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6109 public CalledFromWrongThreadException(String msg) { 6110 super(msg); 6111 } 6112 } 6113 6114 private SurfaceHolder mHolder = new SurfaceHolder() { 6115 // we only need a SurfaceHolder for opengl. it would be nice 6116 // to implement everything else though, especially the callback 6117 // support (opengl doesn't make use of it right now, but eventually 6118 // will). 6119 public Surface getSurface() { 6120 return mSurface; 6121 } 6122 6123 public boolean isCreating() { 6124 return false; 6125 } 6126 6127 public void addCallback(Callback callback) { 6128 } 6129 6130 public void removeCallback(Callback callback) { 6131 } 6132 6133 public void setFixedSize(int width, int height) { 6134 } 6135 6136 public void setSizeFromLayout() { 6137 } 6138 6139 public void setFormat(int format) { 6140 } 6141 6142 public void setType(int type) { 6143 } 6144 6145 public void setKeepScreenOn(boolean screenOn) { 6146 } 6147 6148 public Canvas lockCanvas() { 6149 return null; 6150 } 6151 6152 public Canvas lockCanvas(Rect dirty) { 6153 return null; 6154 } 6155 6156 public void unlockCanvasAndPost(Canvas canvas) { 6157 } 6158 public Rect getSurfaceFrame() { 6159 return null; 6160 } 6161 }; 6162 6163 static RunQueue getRunQueue() { 6164 RunQueue rq = sRunQueues.get(); 6165 if (rq != null) { 6166 return rq; 6167 } 6168 rq = new RunQueue(); 6169 sRunQueues.set(rq); 6170 return rq; 6171 } 6172 6173 /** 6174 * The run queue is used to enqueue pending work from Views when no Handler is 6175 * attached. The work is executed during the next call to performTraversals on 6176 * the thread. 6177 * @hide 6178 */ 6179 static final class RunQueue { 6180 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6181 6182 void post(Runnable action) { 6183 postDelayed(action, 0); 6184 } 6185 6186 void postDelayed(Runnable action, long delayMillis) { 6187 HandlerAction handlerAction = new HandlerAction(); 6188 handlerAction.action = action; 6189 handlerAction.delay = delayMillis; 6190 6191 synchronized (mActions) { 6192 mActions.add(handlerAction); 6193 } 6194 } 6195 6196 void removeCallbacks(Runnable action) { 6197 final HandlerAction handlerAction = new HandlerAction(); 6198 handlerAction.action = action; 6199 6200 synchronized (mActions) { 6201 final ArrayList<HandlerAction> actions = mActions; 6202 6203 while (actions.remove(handlerAction)) { 6204 // Keep going 6205 } 6206 } 6207 } 6208 6209 void executeActions(Handler handler) { 6210 synchronized (mActions) { 6211 final ArrayList<HandlerAction> actions = mActions; 6212 final int count = actions.size(); 6213 6214 for (int i = 0; i < count; i++) { 6215 final HandlerAction handlerAction = actions.get(i); 6216 handler.postDelayed(handlerAction.action, handlerAction.delay); 6217 } 6218 6219 actions.clear(); 6220 } 6221 } 6222 6223 private static class HandlerAction { 6224 Runnable action; 6225 long delay; 6226 6227 @Override 6228 public boolean equals(Object o) { 6229 if (this == o) return true; 6230 if (o == null || getClass() != o.getClass()) return false; 6231 6232 HandlerAction that = (HandlerAction) o; 6233 return !(action != null ? !action.equals(that.action) : that.action != null); 6234 6235 } 6236 6237 @Override 6238 public int hashCode() { 6239 int result = action != null ? action.hashCode() : 0; 6240 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6241 return result; 6242 } 6243 } 6244 } 6245 6246 /** 6247 * Class for managing the accessibility interaction connection 6248 * based on the global accessibility state. 6249 */ 6250 final class AccessibilityInteractionConnectionManager 6251 implements AccessibilityStateChangeListener { 6252 public void onAccessibilityStateChanged(boolean enabled) { 6253 if (enabled) { 6254 ensureConnection(); 6255 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6256 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6257 View focusedView = mView.findFocus(); 6258 if (focusedView != null && focusedView != mView) { 6259 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6260 } 6261 } 6262 } else { 6263 ensureNoConnection(); 6264 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6265 } 6266 } 6267 6268 public void ensureConnection() { 6269 if (mAttachInfo != null) { 6270 final boolean registered = 6271 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6272 if (!registered) { 6273 mAttachInfo.mAccessibilityWindowId = 6274 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6275 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6276 } 6277 } 6278 } 6279 6280 public void ensureNoConnection() { 6281 final boolean registered = 6282 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6283 if (registered) { 6284 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6285 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6286 } 6287 } 6288 } 6289 6290 /** 6291 * This class is an interface this ViewAncestor provides to the 6292 * AccessibilityManagerService to the latter can interact with 6293 * the view hierarchy in this ViewAncestor. 6294 */ 6295 static final class AccessibilityInteractionConnection 6296 extends IAccessibilityInteractionConnection.Stub { 6297 private final WeakReference<ViewRootImpl> mViewRootImpl; 6298 6299 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6300 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6301 } 6302 6303 @Override 6304 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6305 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6306 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6307 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6308 if (viewRootImpl != null && viewRootImpl.mView != null) { 6309 viewRootImpl.getAccessibilityInteractionController() 6310 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6311 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6312 spec); 6313 } else { 6314 // We cannot make the call and notify the caller so it does not wait. 6315 try { 6316 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6317 } catch (RemoteException re) { 6318 /* best effort - ignore */ 6319 } 6320 } 6321 } 6322 6323 @Override 6324 public void performAccessibilityAction(long accessibilityNodeId, int action, 6325 Bundle arguments, int interactionId, 6326 IAccessibilityInteractionConnectionCallback callback, int flags, 6327 int interogatingPid, long interrogatingTid) { 6328 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6329 if (viewRootImpl != null && viewRootImpl.mView != null) { 6330 viewRootImpl.getAccessibilityInteractionController() 6331 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6332 interactionId, callback, flags, interogatingPid, interrogatingTid); 6333 } else { 6334 // We cannot make the call and notify the caller so it does not wait. 6335 try { 6336 callback.setPerformAccessibilityActionResult(false, interactionId); 6337 } catch (RemoteException re) { 6338 /* best effort - ignore */ 6339 } 6340 } 6341 } 6342 6343 @Override 6344 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6345 String viewId, int interactionId, 6346 IAccessibilityInteractionConnectionCallback callback, int flags, 6347 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6348 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6349 if (viewRootImpl != null && viewRootImpl.mView != null) { 6350 viewRootImpl.getAccessibilityInteractionController() 6351 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6352 viewId, interactionId, callback, flags, interrogatingPid, 6353 interrogatingTid, spec); 6354 } else { 6355 // We cannot make the call and notify the caller so it does not wait. 6356 try { 6357 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6358 } catch (RemoteException re) { 6359 /* best effort - ignore */ 6360 } 6361 } 6362 } 6363 6364 @Override 6365 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6366 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6367 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6368 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6369 if (viewRootImpl != null && viewRootImpl.mView != null) { 6370 viewRootImpl.getAccessibilityInteractionController() 6371 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6372 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6373 spec); 6374 } else { 6375 // We cannot make the call and notify the caller so it does not wait. 6376 try { 6377 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6378 } catch (RemoteException re) { 6379 /* best effort - ignore */ 6380 } 6381 } 6382 } 6383 6384 @Override 6385 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6386 IAccessibilityInteractionConnectionCallback callback, int flags, 6387 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6388 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6389 if (viewRootImpl != null && viewRootImpl.mView != null) { 6390 viewRootImpl.getAccessibilityInteractionController() 6391 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6392 flags, interrogatingPid, interrogatingTid, spec); 6393 } else { 6394 // We cannot make the call and notify the caller so it does not wait. 6395 try { 6396 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6397 } catch (RemoteException re) { 6398 /* best effort - ignore */ 6399 } 6400 } 6401 } 6402 6403 @Override 6404 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6405 IAccessibilityInteractionConnectionCallback callback, int flags, 6406 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6407 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6408 if (viewRootImpl != null && viewRootImpl.mView != null) { 6409 viewRootImpl.getAccessibilityInteractionController() 6410 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6411 callback, flags, interrogatingPid, interrogatingTid, spec); 6412 } else { 6413 // We cannot make the call and notify the caller so it does not wait. 6414 try { 6415 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6416 } catch (RemoteException re) { 6417 /* best effort - ignore */ 6418 } 6419 } 6420 } 6421 } 6422 6423 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6424 public View mSource; 6425 6426 public void run() { 6427 if (mSource != null) { 6428 mSource.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6429 mSource.resetAccessibilityStateChanged(); 6430 mSource = null; 6431 } 6432 } 6433 } 6434} 6435