ViewRootImpl.java revision 370ab062a0a18723531258896b352d5f5dd55ae7
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 mDrawDuringWindowsAnimating; 215 boolean mIsDrawing; 216 int mLastSystemUiVisibility; 217 int mClientWindowLayoutFlags; 218 boolean mLastOverscanRequested; 219 220 // Pool of queued input events. 221 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 222 private QueuedInputEvent mQueuedInputEventPool; 223 private int mQueuedInputEventPoolSize; 224 225 /* Input event queue. 226 * Pending input events are input events waiting to be delivered to the input stages 227 * and handled by the application. 228 */ 229 QueuedInputEvent mPendingInputEventHead; 230 QueuedInputEvent mPendingInputEventTail; 231 int mPendingInputEventCount; 232 boolean mProcessInputEventsScheduled; 233 String mPendingInputEventQueueLengthCounterName = "pq"; 234 235 InputStage mFirstInputStage; 236 InputStage mFirstPostImeInputStage; 237 238 boolean mWindowAttributesChanged = false; 239 int mWindowAttributesChangesFlag = 0; 240 241 // These can be accessed by any thread, must be protected with a lock. 242 // Surface can never be reassigned or cleared (use Surface.clear()). 243 private final Surface mSurface = new Surface(); 244 245 boolean mAdded; 246 boolean mAddedTouchMode; 247 248 final CompatibilityInfoHolder mCompatibilityInfo; 249 250 // These are accessed by multiple threads. 251 final Rect mWinFrame; // frame given by window manager. 252 253 final Rect mPendingOverscanInsets = new Rect(); 254 final Rect mPendingVisibleInsets = new Rect(); 255 final Rect mPendingContentInsets = new Rect(); 256 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 257 = new ViewTreeObserver.InternalInsetsInfo(); 258 259 final Rect mFitSystemWindowsInsets = new Rect(); 260 261 final Configuration mLastConfiguration = new Configuration(); 262 final Configuration mPendingConfiguration = new Configuration(); 263 264 boolean mScrollMayChange; 265 int mSoftInputMode; 266 WeakReference<View> mLastScrolledFocus; 267 int mScrollY; 268 int mCurScrollY; 269 Scroller mScroller; 270 HardwareLayer mResizeBuffer; 271 long mResizeBufferStartTime; 272 int mResizeBufferDuration; 273 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 274 private ArrayList<LayoutTransition> mPendingTransitions; 275 276 final ViewConfiguration mViewConfiguration; 277 278 /* Drag/drop */ 279 ClipDescription mDragDescription; 280 View mCurrentDragView; 281 volatile Object mLocalDragState; 282 final PointF mDragPoint = new PointF(); 283 final PointF mLastTouchPoint = new PointF(); 284 285 private boolean mProfileRendering; 286 private Choreographer.FrameCallback mRenderProfiler; 287 private boolean mRenderProfilingEnabled; 288 289 // Variables to track frames per second, enabled via DEBUG_FPS flag 290 private long mFpsStartTime = -1; 291 private long mFpsPrevTime = -1; 292 private int mFpsNumFrames; 293 294 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 295 296 /** 297 * see {@link #playSoundEffect(int)} 298 */ 299 AudioManager mAudioManager; 300 301 final AccessibilityManager mAccessibilityManager; 302 303 AccessibilityInteractionController mAccessibilityInteractionController; 304 305 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 306 307 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 308 309 HashSet<View> mTempHashSet; 310 311 private final int mDensity; 312 private final int mNoncompatDensity; 313 314 private boolean mInLayout = false; 315 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 316 boolean mHandlingLayoutInLayoutRequest = false; 317 318 private int mViewLayoutDirectionInitial; 319 320 /** 321 * Consistency verifier for debugging purposes. 322 */ 323 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 324 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 325 new InputEventConsistencyVerifier(this, 0) : null; 326 327 static final class SystemUiVisibilityInfo { 328 int seq; 329 int globalVisibility; 330 int localValue; 331 int localChanges; 332 } 333 334 public ViewRootImpl(Context context, Display display) { 335 mContext = context; 336 mWindowSession = WindowManagerGlobal.getWindowSession(); 337 mDisplay = display; 338 mBasePackageName = context.getBasePackageName(); 339 340 CompatibilityInfoHolder cih = display.getCompatibilityInfo(); 341 mCompatibilityInfo = cih != null ? cih : new CompatibilityInfoHolder(); 342 343 mThread = Thread.currentThread(); 344 mLocation = new WindowLeaked(null); 345 mLocation.fillInStackTrace(); 346 mWidth = -1; 347 mHeight = -1; 348 mDirty = new Rect(); 349 mTempRect = new Rect(); 350 mVisRect = new Rect(); 351 mWinFrame = new Rect(); 352 mWindow = new W(this); 353 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 354 mViewVisibility = View.GONE; 355 mTransparentRegion = new Region(); 356 mPreviousTransparentRegion = new Region(); 357 mFirst = true; // true for the first time the view is added 358 mAdded = false; 359 mAccessibilityManager = AccessibilityManager.getInstance(context); 360 mAccessibilityInteractionConnectionManager = 361 new AccessibilityInteractionConnectionManager(); 362 mAccessibilityManager.addAccessibilityStateChangeListener( 363 mAccessibilityInteractionConnectionManager); 364 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 365 mViewConfiguration = ViewConfiguration.get(context); 366 mDensity = context.getResources().getDisplayMetrics().densityDpi; 367 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 368 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 369 mChoreographer = Choreographer.getInstance(); 370 371 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 372 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 373 loadSystemProperties(); 374 } 375 376 /** 377 * @return True if the application requests the use of a separate render thread, 378 * false otherwise 379 */ 380 private static boolean isRenderThreadRequested(Context context) { 381 if (USE_RENDER_THREAD) { 382 synchronized (sRenderThreadQueryLock) { 383 if (!sRenderThreadQueried) { 384 final PackageManager packageManager = context.getPackageManager(); 385 final String packageName = context.getApplicationInfo().packageName; 386 try { 387 ApplicationInfo applicationInfo = packageManager.getApplicationInfo(packageName, 388 PackageManager.GET_META_DATA); 389 if (applicationInfo.metaData != null) { 390 sUseRenderThread = applicationInfo.metaData.getBoolean( 391 "android.graphics.renderThread", false); 392 } 393 } catch (PackageManager.NameNotFoundException e) { 394 } finally { 395 sRenderThreadQueried = true; 396 } 397 } 398 return sUseRenderThread; 399 } 400 } else { 401 return false; 402 } 403 } 404 405 public static void addFirstDrawHandler(Runnable callback) { 406 synchronized (sFirstDrawHandlers) { 407 if (!sFirstDrawComplete) { 408 sFirstDrawHandlers.add(callback); 409 } 410 } 411 } 412 413 public static void addConfigCallback(ComponentCallbacks callback) { 414 synchronized (sConfigCallbacks) { 415 sConfigCallbacks.add(callback); 416 } 417 } 418 419 // FIXME for perf testing only 420 private boolean mProfile = false; 421 422 /** 423 * Call this to profile the next traversal call. 424 * FIXME for perf testing only. Remove eventually 425 */ 426 public void profile() { 427 mProfile = true; 428 } 429 430 /** 431 * Indicates whether we are in touch mode. Calling this method triggers an IPC 432 * call and should be avoided whenever possible. 433 * 434 * @return True, if the device is in touch mode, false otherwise. 435 * 436 * @hide 437 */ 438 static boolean isInTouchMode() { 439 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 440 if (windowSession != null) { 441 try { 442 return windowSession.getInTouchMode(); 443 } catch (RemoteException e) { 444 } 445 } 446 return false; 447 } 448 449 /** 450 * We have one child 451 */ 452 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 453 synchronized (this) { 454 if (mView == null) { 455 mView = view; 456 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 457 mFallbackEventHandler.setView(view); 458 mWindowAttributes.copyFrom(attrs); 459 if (mWindowAttributes.packageName == null) { 460 mWindowAttributes.packageName = mBasePackageName; 461 } 462 attrs = mWindowAttributes; 463 // Keep track of the actual window flags supplied by the client. 464 mClientWindowLayoutFlags = attrs.flags; 465 466 setAccessibilityFocus(null, null); 467 468 if (view instanceof RootViewSurfaceTaker) { 469 mSurfaceHolderCallback = 470 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 471 if (mSurfaceHolderCallback != null) { 472 mSurfaceHolder = new TakenSurfaceHolder(); 473 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 474 } 475 } 476 477 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 478 mTranslator = compatibilityInfo.getTranslator(); 479 480 // If the application owns the surface, don't enable hardware acceleration 481 if (mSurfaceHolder == null) { 482 enableHardwareAcceleration(mView.getContext(), attrs); 483 } 484 485 boolean restore = false; 486 if (mTranslator != null) { 487 mSurface.setCompatibilityTranslator(mTranslator); 488 restore = true; 489 attrs.backup(); 490 mTranslator.translateWindowLayout(attrs); 491 } 492 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 493 494 if (!compatibilityInfo.supportsScreen()) { 495 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 496 mLastInCompatMode = true; 497 } 498 499 mSoftInputMode = attrs.softInputMode; 500 mWindowAttributesChanged = true; 501 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 502 mAttachInfo.mRootView = view; 503 mAttachInfo.mScalingRequired = mTranslator != null; 504 mAttachInfo.mApplicationScale = 505 mTranslator == null ? 1.0f : mTranslator.applicationScale; 506 if (panelParentView != null) { 507 mAttachInfo.mPanelParentWindowToken 508 = panelParentView.getApplicationWindowToken(); 509 } 510 mAdded = true; 511 int res; /* = WindowManagerImpl.ADD_OKAY; */ 512 513 // Schedule the first layout -before- adding to the window 514 // manager, to make sure we do the relayout before receiving 515 // any other events from the system. 516 requestLayout(); 517 if ((mWindowAttributes.inputFeatures 518 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 519 mInputChannel = new InputChannel(); 520 } 521 try { 522 mOrigWindowType = mWindowAttributes.type; 523 mAttachInfo.mRecomputeGlobalAttributes = true; 524 collectViewAttributes(); 525 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 526 getHostVisibility(), mDisplay.getDisplayId(), 527 mAttachInfo.mContentInsets, mInputChannel); 528 } catch (RemoteException e) { 529 mAdded = false; 530 mView = null; 531 mAttachInfo.mRootView = null; 532 mInputChannel = null; 533 mFallbackEventHandler.setView(null); 534 unscheduleTraversals(); 535 setAccessibilityFocus(null, null); 536 throw new RuntimeException("Adding window failed", e); 537 } finally { 538 if (restore) { 539 attrs.restore(); 540 } 541 } 542 543 if (mTranslator != null) { 544 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 545 } 546 mPendingOverscanInsets.set(0, 0, 0, 0); 547 mPendingContentInsets.set(mAttachInfo.mContentInsets); 548 mPendingVisibleInsets.set(0, 0, 0, 0); 549 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 550 if (res < WindowManagerGlobal.ADD_OKAY) { 551 mAttachInfo.mRootView = null; 552 mAdded = false; 553 mFallbackEventHandler.setView(null); 554 unscheduleTraversals(); 555 setAccessibilityFocus(null, null); 556 switch (res) { 557 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 558 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 559 throw new WindowManager.BadTokenException( 560 "Unable to add window -- token " + attrs.token 561 + " is not valid; is your activity running?"); 562 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 563 throw new WindowManager.BadTokenException( 564 "Unable to add window -- token " + attrs.token 565 + " is not for an application"); 566 case WindowManagerGlobal.ADD_APP_EXITING: 567 throw new WindowManager.BadTokenException( 568 "Unable to add window -- app for token " + attrs.token 569 + " is exiting"); 570 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 571 throw new WindowManager.BadTokenException( 572 "Unable to add window -- window " + mWindow 573 + " has already been added"); 574 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 575 // Silently ignore -- we would have just removed it 576 // right away, anyway. 577 return; 578 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 579 throw new WindowManager.BadTokenException( 580 "Unable to add window " + mWindow + 581 " -- another window of this type already exists"); 582 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 583 throw new WindowManager.BadTokenException( 584 "Unable to add window " + mWindow + 585 " -- permission denied for this window type"); 586 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 587 throw new WindowManager.InvalidDisplayException( 588 "Unable to add window " + mWindow + 589 " -- the specified display can not be found"); 590 } 591 throw new RuntimeException( 592 "Unable to add window -- unknown error code " + res); 593 } 594 595 if (view instanceof RootViewSurfaceTaker) { 596 mInputQueueCallback = 597 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 598 } 599 if (mInputChannel != null) { 600 if (mInputQueueCallback != null) { 601 mInputQueue = new InputQueue(); 602 mInputQueueCallback.onInputQueueCreated(mInputQueue); 603 } 604 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 605 Looper.myLooper()); 606 } 607 608 view.assignParent(this); 609 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 610 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 611 612 if (mAccessibilityManager.isEnabled()) { 613 mAccessibilityInteractionConnectionManager.ensureConnection(); 614 } 615 616 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 617 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 618 } 619 620 // Set up the input pipeline. 621 CharSequence counterSuffix = attrs.getTitle(); 622 InputStage syntheticStage = new SyntheticInputStage(); 623 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticStage); 624 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 625 "aq:native-post-ime:" + counterSuffix); 626 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 627 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 628 "aq:ime:" + counterSuffix); 629 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 630 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 631 "aq:native-pre-ime:" + counterSuffix); 632 633 mFirstInputStage = nativePreImeStage; 634 mFirstPostImeInputStage = earlyPostImeStage; 635 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 636 } 637 } 638 } 639 640 void destroyHardwareResources() { 641 if (mAttachInfo.mHardwareRenderer != null) { 642 if (mAttachInfo.mHardwareRenderer.isEnabled()) { 643 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 644 } 645 mAttachInfo.mHardwareRenderer.destroy(false); 646 } 647 } 648 649 void terminateHardwareResources() { 650 if (mAttachInfo.mHardwareRenderer != null) { 651 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 652 mAttachInfo.mHardwareRenderer.destroy(false); 653 } 654 } 655 656 void destroyHardwareLayers() { 657 if (mThread != Thread.currentThread()) { 658 if (mAttachInfo.mHardwareRenderer != null && 659 mAttachInfo.mHardwareRenderer.isEnabled()) { 660 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 661 } 662 } else { 663 if (mAttachInfo.mHardwareRenderer != null && 664 mAttachInfo.mHardwareRenderer.isEnabled()) { 665 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 666 } 667 } 668 } 669 670 void pushHardwareLayerUpdate(HardwareLayer layer) { 671 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 672 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 673 } 674 } 675 676 public boolean attachFunctor(int functor) { 677 //noinspection SimplifiableIfStatement 678 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 679 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 680 } 681 return false; 682 } 683 684 public void detachFunctor(int functor) { 685 if (mAttachInfo.mHardwareRenderer != null) { 686 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 687 } 688 } 689 690 private void enableHardwareAcceleration(Context context, WindowManager.LayoutParams attrs) { 691 mAttachInfo.mHardwareAccelerated = false; 692 mAttachInfo.mHardwareAccelerationRequested = false; 693 694 // Don't enable hardware acceleration when the application is in compatibility mode 695 if (mTranslator != null) return; 696 697 // Try to enable hardware acceleration if requested 698 final boolean hardwareAccelerated = 699 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 700 701 if (hardwareAccelerated) { 702 if (!HardwareRenderer.isAvailable()) { 703 return; 704 } 705 706 // Persistent processes (including the system) should not do 707 // accelerated rendering on low-end devices. In that case, 708 // sRendererDisabled will be set. In addition, the system process 709 // itself should never do accelerated rendering. In that case, both 710 // sRendererDisabled and sSystemRendererDisabled are set. When 711 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 712 // can be used by code on the system process to escape that and enable 713 // HW accelerated drawing. (This is basically for the lock screen.) 714 715 final boolean fakeHwAccelerated = (attrs.privateFlags & 716 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 717 final boolean forceHwAccelerated = (attrs.privateFlags & 718 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 719 720 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 721 && forceHwAccelerated)) { 722 // Don't enable hardware acceleration when we're not on the main thread 723 if (!HardwareRenderer.sSystemRendererDisabled && 724 Looper.getMainLooper() != Looper.myLooper()) { 725 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 726 + "acceleration outside of the main thread, aborting"); 727 return; 728 } 729 730 final boolean renderThread = isRenderThreadRequested(context); 731 if (renderThread) { 732 Log.i(HardwareRenderer.LOG_TAG, "Render threat initiated"); 733 } 734 735 if (mAttachInfo.mHardwareRenderer != null) { 736 mAttachInfo.mHardwareRenderer.destroy(true); 737 } 738 739 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 740 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 741 if (mAttachInfo.mHardwareRenderer != null) { 742 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 743 mAttachInfo.mHardwareAccelerated = 744 mAttachInfo.mHardwareAccelerationRequested = true; 745 } 746 } else if (fakeHwAccelerated) { 747 // The window had wanted to use hardware acceleration, but this 748 // is not allowed in its process. By setting this flag, it can 749 // still render as if it was accelerated. This is basically for 750 // the preview windows the window manager shows for launching 751 // applications, so they will look more like the app being launched. 752 mAttachInfo.mHardwareAccelerationRequested = true; 753 } 754 } 755 } 756 757 public View getView() { 758 return mView; 759 } 760 761 final WindowLeaked getLocation() { 762 return mLocation; 763 } 764 765 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 766 synchronized (this) { 767 int oldSoftInputMode = mWindowAttributes.softInputMode; 768 // Keep track of the actual window flags supplied by the client. 769 mClientWindowLayoutFlags = attrs.flags; 770 // preserve compatible window flag if exists. 771 int compatibleWindowFlag = 772 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 773 // transfer over system UI visibility values as they carry current state. 774 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 775 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 776 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 777 if (mWindowAttributes.packageName == null) { 778 mWindowAttributes.packageName = mBasePackageName; 779 } 780 mWindowAttributes.flags |= compatibleWindowFlag; 781 782 applyKeepScreenOnFlag(mWindowAttributes); 783 784 if (newView) { 785 mSoftInputMode = attrs.softInputMode; 786 requestLayout(); 787 } 788 // Don't lose the mode we last auto-computed. 789 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 790 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 791 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 792 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 793 | (oldSoftInputMode 794 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 795 } 796 mWindowAttributesChanged = true; 797 scheduleTraversals(); 798 } 799 } 800 801 void handleAppVisibility(boolean visible) { 802 if (mAppVisible != visible) { 803 mAppVisible = visible; 804 scheduleTraversals(); 805 } 806 } 807 808 void handleGetNewSurface() { 809 mNewSurfaceNeeded = true; 810 mFullRedrawNeeded = true; 811 scheduleTraversals(); 812 } 813 814 void handleScreenStateChange(boolean on) { 815 if (on != mAttachInfo.mScreenOn) { 816 mAttachInfo.mScreenOn = on; 817 if (mView != null) { 818 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 819 } 820 if (on) { 821 mFullRedrawNeeded = true; 822 scheduleTraversals(); 823 } 824 } 825 } 826 827 @Override 828 public void requestFitSystemWindows() { 829 checkThread(); 830 mFitSystemWindowsRequested = true; 831 scheduleTraversals(); 832 } 833 834 @Override 835 public void requestLayout() { 836 if (!mHandlingLayoutInLayoutRequest) { 837 checkThread(); 838 mLayoutRequested = true; 839 scheduleTraversals(); 840 } 841 } 842 843 @Override 844 public boolean isLayoutRequested() { 845 return mLayoutRequested; 846 } 847 848 void invalidate() { 849 mDirty.set(0, 0, mWidth, mHeight); 850 scheduleTraversals(); 851 } 852 853 void invalidateWorld(View view) { 854 view.invalidate(); 855 if (view instanceof ViewGroup) { 856 ViewGroup parent = (ViewGroup) view; 857 for (int i = 0; i < parent.getChildCount(); i++) { 858 invalidateWorld(parent.getChildAt(i)); 859 } 860 } 861 } 862 863 @Override 864 public void invalidateChild(View child, Rect dirty) { 865 invalidateChildInParent(null, dirty); 866 } 867 868 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 869 checkThread(); 870 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 871 872 if (dirty == null) { 873 invalidate(); 874 return null; 875 } else if (dirty.isEmpty() && !mIsAnimating) { 876 return null; 877 } 878 879 if (mCurScrollY != 0 || mTranslator != null) { 880 mTempRect.set(dirty); 881 dirty = mTempRect; 882 if (mCurScrollY != 0) { 883 dirty.offset(0, -mCurScrollY); 884 } 885 if (mTranslator != null) { 886 mTranslator.translateRectInAppWindowToScreen(dirty); 887 } 888 if (mAttachInfo.mScalingRequired) { 889 dirty.inset(-1, -1); 890 } 891 } 892 893 final Rect localDirty = mDirty; 894 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 895 mAttachInfo.mSetIgnoreDirtyState = true; 896 mAttachInfo.mIgnoreDirtyState = true; 897 } 898 899 // Add the new dirty rect to the current one 900 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 901 // Intersect with the bounds of the window to skip 902 // updates that lie outside of the visible region 903 final float appScale = mAttachInfo.mApplicationScale; 904 final boolean intersected = localDirty.intersect(0, 0, 905 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 906 if (!intersected) { 907 localDirty.setEmpty(); 908 } 909 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 910 scheduleTraversals(); 911 } 912 913 return null; 914 } 915 916 void setStopped(boolean stopped) { 917 if (mStopped != stopped) { 918 mStopped = stopped; 919 if (!stopped) { 920 scheduleTraversals(); 921 } 922 } 923 } 924 925 public ViewParent getParent() { 926 return null; 927 } 928 929 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 930 if (child != mView) { 931 throw new RuntimeException("child is not mine, honest!"); 932 } 933 // Note: don't apply scroll offset, because we want to know its 934 // visibility in the virtual canvas being given to the view hierarchy. 935 return r.intersect(0, 0, mWidth, mHeight); 936 } 937 938 public void bringChildToFront(View child) { 939 } 940 941 int getHostVisibility() { 942 return mAppVisible ? mView.getVisibility() : View.GONE; 943 } 944 945 void disposeResizeBuffer() { 946 if (mResizeBuffer != null) { 947 mResizeBuffer.destroy(); 948 mResizeBuffer = null; 949 } 950 } 951 952 /** 953 * Add LayoutTransition to the list of transitions to be started in the next traversal. 954 * This list will be cleared after the transitions on the list are start()'ed. These 955 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 956 * happens during the layout phase of traversal, which we want to complete before any of the 957 * animations are started (because those animations may side-effect properties that layout 958 * depends upon, like the bounding rectangles of the affected views). So we add the transition 959 * to the list and it is started just prior to starting the drawing phase of traversal. 960 * 961 * @param transition The LayoutTransition to be started on the next traversal. 962 * 963 * @hide 964 */ 965 public void requestTransitionStart(LayoutTransition transition) { 966 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 967 if (mPendingTransitions == null) { 968 mPendingTransitions = new ArrayList<LayoutTransition>(); 969 } 970 mPendingTransitions.add(transition); 971 } 972 } 973 974 void scheduleTraversals() { 975 if (!mTraversalScheduled) { 976 mTraversalScheduled = true; 977 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 978 mChoreographer.postCallback( 979 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 980 scheduleConsumeBatchedInput(); 981 } 982 } 983 984 void unscheduleTraversals() { 985 if (mTraversalScheduled) { 986 mTraversalScheduled = false; 987 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 988 mChoreographer.removeCallbacks( 989 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 990 } 991 } 992 993 void doTraversal() { 994 if (mTraversalScheduled) { 995 mTraversalScheduled = false; 996 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 997 998 if (mProfile) { 999 Debug.startMethodTracing("ViewAncestor"); 1000 } 1001 1002 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 1003 try { 1004 performTraversals(); 1005 } finally { 1006 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1007 } 1008 1009 if (mProfile) { 1010 Debug.stopMethodTracing(); 1011 mProfile = false; 1012 } 1013 } 1014 } 1015 1016 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1017 // Update window's global keep screen on flag: if a view has requested 1018 // that the screen be kept on, then it is always set; otherwise, it is 1019 // set to whatever the client last requested for the global state. 1020 if (mAttachInfo.mKeepScreenOn) { 1021 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1022 } else { 1023 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1024 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1025 } 1026 } 1027 1028 private boolean collectViewAttributes() { 1029 final View.AttachInfo attachInfo = mAttachInfo; 1030 if (attachInfo.mRecomputeGlobalAttributes) { 1031 //Log.i(TAG, "Computing view hierarchy attributes!"); 1032 attachInfo.mRecomputeGlobalAttributes = false; 1033 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1034 attachInfo.mKeepScreenOn = false; 1035 attachInfo.mSystemUiVisibility = 0; 1036 attachInfo.mHasSystemUiListeners = false; 1037 mView.dispatchCollectViewAttributes(attachInfo, 0); 1038 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1039 WindowManager.LayoutParams params = mWindowAttributes; 1040 if (attachInfo.mKeepScreenOn != oldScreenOn 1041 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1042 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1043 applyKeepScreenOnFlag(params); 1044 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1045 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1046 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1047 return true; 1048 } 1049 } 1050 return false; 1051 } 1052 1053 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1054 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1055 int childWidthMeasureSpec; 1056 int childHeightMeasureSpec; 1057 boolean windowSizeMayChange = false; 1058 1059 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1060 "Measuring " + host + " in display " + desiredWindowWidth 1061 + "x" + desiredWindowHeight + "..."); 1062 1063 boolean goodMeasure = false; 1064 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1065 // On large screens, we don't want to allow dialogs to just 1066 // stretch to fill the entire width of the screen to display 1067 // one line of text. First try doing the layout at a smaller 1068 // size to see if it will fit. 1069 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1070 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1071 int baseSize = 0; 1072 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1073 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1074 } 1075 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1076 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1077 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1078 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1079 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1080 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1081 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1082 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1083 goodMeasure = true; 1084 } else { 1085 // Didn't fit in that size... try expanding a bit. 1086 baseSize = (baseSize+desiredWindowWidth)/2; 1087 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1088 + baseSize); 1089 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1090 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1091 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1092 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1093 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1094 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1095 goodMeasure = true; 1096 } 1097 } 1098 } 1099 } 1100 1101 if (!goodMeasure) { 1102 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1103 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1104 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1105 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1106 windowSizeMayChange = true; 1107 } 1108 } 1109 1110 if (DBG) { 1111 System.out.println("======================================"); 1112 System.out.println("performTraversals -- after measure"); 1113 host.debug(); 1114 } 1115 1116 return windowSizeMayChange; 1117 } 1118 1119 private void performTraversals() { 1120 // cache mView since it is used so much below... 1121 final View host = mView; 1122 1123 if (DBG) { 1124 System.out.println("======================================"); 1125 System.out.println("performTraversals"); 1126 host.debug(); 1127 } 1128 1129 if (host == null || !mAdded) 1130 return; 1131 1132 mIsInTraversal = true; 1133 mWillDrawSoon = true; 1134 boolean windowSizeMayChange = false; 1135 boolean newSurface = false; 1136 boolean surfaceChanged = false; 1137 WindowManager.LayoutParams lp = mWindowAttributes; 1138 1139 int desiredWindowWidth; 1140 int desiredWindowHeight; 1141 1142 final View.AttachInfo attachInfo = mAttachInfo; 1143 1144 final int viewVisibility = getHostVisibility(); 1145 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1146 || mNewSurfaceNeeded; 1147 1148 WindowManager.LayoutParams params = null; 1149 if (mWindowAttributesChanged) { 1150 mWindowAttributesChanged = false; 1151 surfaceChanged = true; 1152 params = lp; 1153 } 1154 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 1155 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1156 params = lp; 1157 mFullRedrawNeeded = true; 1158 mLayoutRequested = true; 1159 if (mLastInCompatMode) { 1160 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1161 mLastInCompatMode = false; 1162 } else { 1163 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1164 mLastInCompatMode = true; 1165 } 1166 } 1167 1168 mWindowAttributesChangesFlag = 0; 1169 1170 Rect frame = mWinFrame; 1171 if (mFirst) { 1172 mFullRedrawNeeded = true; 1173 mLayoutRequested = true; 1174 1175 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1176 // NOTE -- system code, won't try to do compat mode. 1177 Point size = new Point(); 1178 mDisplay.getRealSize(size); 1179 desiredWindowWidth = size.x; 1180 desiredWindowHeight = size.y; 1181 } else { 1182 DisplayMetrics packageMetrics = 1183 mView.getContext().getResources().getDisplayMetrics(); 1184 desiredWindowWidth = packageMetrics.widthPixels; 1185 desiredWindowHeight = packageMetrics.heightPixels; 1186 } 1187 1188 // For the very first time, tell the view hierarchy that it 1189 // is attached to the window. Note that at this point the surface 1190 // object is not initialized to its backing store, but soon it 1191 // will be (assuming the window is visible). 1192 attachInfo.mSurface = mSurface; 1193 // We used to use the following condition to choose 32 bits drawing caches: 1194 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1195 // However, windows are now always 32 bits by default, so choose 32 bits 1196 attachInfo.mUse32BitDrawingCache = true; 1197 attachInfo.mHasWindowFocus = false; 1198 attachInfo.mWindowVisibility = viewVisibility; 1199 attachInfo.mRecomputeGlobalAttributes = false; 1200 viewVisibilityChanged = false; 1201 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1202 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1203 // Set the layout direction if it has not been set before (inherit is the default) 1204 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1205 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1206 } 1207 host.dispatchAttachedToWindow(attachInfo, 0); 1208 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1209 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1210 host.fitSystemWindows(mFitSystemWindowsInsets); 1211 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1212 1213 } else { 1214 desiredWindowWidth = frame.width(); 1215 desiredWindowHeight = frame.height(); 1216 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1217 if (DEBUG_ORIENTATION) Log.v(TAG, 1218 "View " + host + " resized to: " + frame); 1219 mFullRedrawNeeded = true; 1220 mLayoutRequested = true; 1221 windowSizeMayChange = true; 1222 } 1223 } 1224 1225 if (viewVisibilityChanged) { 1226 attachInfo.mWindowVisibility = viewVisibility; 1227 host.dispatchWindowVisibilityChanged(viewVisibility); 1228 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1229 destroyHardwareResources(); 1230 } 1231 if (viewVisibility == View.GONE) { 1232 // After making a window gone, we will count it as being 1233 // shown for the first time the next time it gets focus. 1234 mHasHadWindowFocus = false; 1235 } 1236 } 1237 1238 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1239 getRunQueue().executeActions(attachInfo.mHandler); 1240 1241 boolean insetsChanged = false; 1242 1243 boolean layoutRequested = mLayoutRequested && !mStopped; 1244 if (layoutRequested) { 1245 1246 final Resources res = mView.getContext().getResources(); 1247 1248 if (mFirst) { 1249 // make sure touch mode code executes by setting cached value 1250 // to opposite of the added touch mode. 1251 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1252 ensureTouchModeLocally(mAddedTouchMode); 1253 } else { 1254 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1255 insetsChanged = true; 1256 } 1257 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1258 insetsChanged = true; 1259 } 1260 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1261 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1262 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1263 + mAttachInfo.mVisibleInsets); 1264 } 1265 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1266 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1267 windowSizeMayChange = true; 1268 1269 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1270 // NOTE -- system code, won't try to do compat mode. 1271 Point size = new Point(); 1272 mDisplay.getRealSize(size); 1273 desiredWindowWidth = size.x; 1274 desiredWindowHeight = size.y; 1275 } else { 1276 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1277 desiredWindowWidth = packageMetrics.widthPixels; 1278 desiredWindowHeight = packageMetrics.heightPixels; 1279 } 1280 } 1281 } 1282 1283 // Ask host how big it wants to be 1284 windowSizeMayChange |= measureHierarchy(host, lp, res, 1285 desiredWindowWidth, desiredWindowHeight); 1286 } 1287 1288 if (collectViewAttributes()) { 1289 params = lp; 1290 } 1291 if (attachInfo.mForceReportNewAttributes) { 1292 attachInfo.mForceReportNewAttributes = false; 1293 params = lp; 1294 } 1295 1296 if (mFirst || attachInfo.mViewVisibilityChanged) { 1297 attachInfo.mViewVisibilityChanged = false; 1298 int resizeMode = mSoftInputMode & 1299 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1300 // If we are in auto resize mode, then we need to determine 1301 // what mode to use now. 1302 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1303 final int N = attachInfo.mScrollContainers.size(); 1304 for (int i=0; i<N; i++) { 1305 if (attachInfo.mScrollContainers.get(i).isShown()) { 1306 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1307 } 1308 } 1309 if (resizeMode == 0) { 1310 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1311 } 1312 if ((lp.softInputMode & 1313 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1314 lp.softInputMode = (lp.softInputMode & 1315 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1316 resizeMode; 1317 params = lp; 1318 } 1319 } 1320 } 1321 1322 if (params != null) { 1323 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1324 if (!PixelFormat.formatHasAlpha(params.format)) { 1325 params.format = PixelFormat.TRANSLUCENT; 1326 } 1327 } 1328 mAttachInfo.mOverscanRequested = (params.flags 1329 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1330 } 1331 1332 if (mFitSystemWindowsRequested) { 1333 mFitSystemWindowsRequested = false; 1334 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1335 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1336 host.fitSystemWindows(mFitSystemWindowsInsets); 1337 if (mLayoutRequested) { 1338 // Short-circuit catching a new layout request here, so 1339 // we don't need to go through two layout passes when things 1340 // change due to fitting system windows, which can happen a lot. 1341 windowSizeMayChange |= measureHierarchy(host, lp, 1342 mView.getContext().getResources(), 1343 desiredWindowWidth, desiredWindowHeight); 1344 } 1345 } 1346 1347 if (layoutRequested) { 1348 // Clear this now, so that if anything requests a layout in the 1349 // rest of this function we will catch it and re-run a full 1350 // layout pass. 1351 mLayoutRequested = false; 1352 } 1353 1354 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1355 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1356 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1357 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1358 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1359 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1360 1361 final boolean computesInternalInsets = 1362 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1363 1364 boolean insetsPending = false; 1365 int relayoutResult = 0; 1366 1367 if (mFirst || windowShouldResize || insetsChanged || 1368 viewVisibilityChanged || params != null) { 1369 1370 if (viewVisibility == View.VISIBLE) { 1371 // If this window is giving internal insets to the window 1372 // manager, and it is being added or changing its visibility, 1373 // then we want to first give the window manager "fake" 1374 // insets to cause it to effectively ignore the content of 1375 // the window during layout. This avoids it briefly causing 1376 // other windows to resize/move based on the raw frame of the 1377 // window, waiting until we can finish laying out this window 1378 // and get back to the window manager with the ultimately 1379 // computed insets. 1380 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1381 } 1382 1383 if (mSurfaceHolder != null) { 1384 mSurfaceHolder.mSurfaceLock.lock(); 1385 mDrawingAllowed = true; 1386 } 1387 1388 boolean hwInitialized = false; 1389 boolean contentInsetsChanged = false; 1390 boolean hadSurface = mSurface.isValid(); 1391 1392 try { 1393 if (DEBUG_LAYOUT) { 1394 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1395 host.getMeasuredHeight() + ", params=" + params); 1396 } 1397 1398 final int surfaceGenerationId = mSurface.getGenerationId(); 1399 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1400 if (!mDrawDuringWindowsAnimating) { 1401 mWindowsAnimating |= 1402 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0; 1403 } 1404 1405 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1406 + " overscan=" + mPendingOverscanInsets.toShortString() 1407 + " content=" + mPendingContentInsets.toShortString() 1408 + " visible=" + mPendingVisibleInsets.toShortString() 1409 + " surface=" + mSurface); 1410 1411 if (mPendingConfiguration.seq != 0) { 1412 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1413 + mPendingConfiguration); 1414 updateConfiguration(mPendingConfiguration, !mFirst); 1415 mPendingConfiguration.seq = 0; 1416 } 1417 1418 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1419 mAttachInfo.mOverscanInsets); 1420 contentInsetsChanged = !mPendingContentInsets.equals( 1421 mAttachInfo.mContentInsets); 1422 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1423 mAttachInfo.mVisibleInsets); 1424 if (contentInsetsChanged) { 1425 if (mWidth > 0 && mHeight > 0 && lp != null && 1426 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1427 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1428 mSurface != null && mSurface.isValid() && 1429 !mAttachInfo.mTurnOffWindowResizeAnim && 1430 mAttachInfo.mHardwareRenderer != null && 1431 mAttachInfo.mHardwareRenderer.isEnabled() && 1432 mAttachInfo.mHardwareRenderer.validate() && 1433 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1434 1435 disposeResizeBuffer(); 1436 1437 boolean completed = false; 1438 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1439 HardwareCanvas layerCanvas = null; 1440 try { 1441 if (mResizeBuffer == null) { 1442 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1443 mWidth, mHeight, false); 1444 } else if (mResizeBuffer.getWidth() != mWidth || 1445 mResizeBuffer.getHeight() != mHeight) { 1446 mResizeBuffer.resize(mWidth, mHeight); 1447 } 1448 // TODO: should handle create/resize failure 1449 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1450 final int restoreCount = layerCanvas.save(); 1451 1452 int yoff; 1453 final boolean scrolling = mScroller != null 1454 && mScroller.computeScrollOffset(); 1455 if (scrolling) { 1456 yoff = mScroller.getCurrY(); 1457 mScroller.abortAnimation(); 1458 } else { 1459 yoff = mScrollY; 1460 } 1461 1462 layerCanvas.translate(0, -yoff); 1463 if (mTranslator != null) { 1464 mTranslator.translateCanvas(layerCanvas); 1465 } 1466 1467 DisplayList displayList = mView.mDisplayList; 1468 if (displayList != null) { 1469 layerCanvas.drawDisplayList(displayList, null, 1470 DisplayList.FLAG_CLIP_CHILDREN); 1471 } else { 1472 mView.draw(layerCanvas); 1473 } 1474 1475 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1476 1477 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1478 mResizeBufferDuration = mView.getResources().getInteger( 1479 com.android.internal.R.integer.config_mediumAnimTime); 1480 completed = true; 1481 1482 layerCanvas.restoreToCount(restoreCount); 1483 } catch (OutOfMemoryError e) { 1484 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1485 } finally { 1486 if (mResizeBuffer != null) { 1487 mResizeBuffer.end(hwRendererCanvas); 1488 if (!completed) { 1489 mResizeBuffer.destroy(); 1490 mResizeBuffer = null; 1491 } 1492 } 1493 } 1494 } 1495 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1496 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1497 + mAttachInfo.mContentInsets); 1498 } 1499 if (overscanInsetsChanged) { 1500 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1501 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1502 + mAttachInfo.mOverscanInsets); 1503 // Need to relayout with content insets. 1504 contentInsetsChanged = true; 1505 } 1506 if (contentInsetsChanged || mLastSystemUiVisibility != 1507 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1508 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1509 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1510 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1511 mFitSystemWindowsRequested = false; 1512 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1513 host.fitSystemWindows(mFitSystemWindowsInsets); 1514 } 1515 if (visibleInsetsChanged) { 1516 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1517 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1518 + mAttachInfo.mVisibleInsets); 1519 } 1520 1521 if (!hadSurface) { 1522 if (mSurface.isValid()) { 1523 // If we are creating a new surface, then we need to 1524 // completely redraw it. Also, when we get to the 1525 // point of drawing it we will hold off and schedule 1526 // a new traversal instead. This is so we can tell the 1527 // window manager about all of the windows being displayed 1528 // before actually drawing them, so it can display then 1529 // all at once. 1530 newSurface = true; 1531 mFullRedrawNeeded = true; 1532 mPreviousTransparentRegion.setEmpty(); 1533 1534 if (mAttachInfo.mHardwareRenderer != null) { 1535 try { 1536 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1537 mHolder.getSurface()); 1538 } catch (Surface.OutOfResourcesException e) { 1539 handleOutOfResourcesException(e); 1540 return; 1541 } 1542 } 1543 } 1544 } else if (!mSurface.isValid()) { 1545 // If the surface has been removed, then reset the scroll 1546 // positions. 1547 if (mLastScrolledFocus != null) { 1548 mLastScrolledFocus.clear(); 1549 } 1550 mScrollY = mCurScrollY = 0; 1551 if (mScroller != null) { 1552 mScroller.abortAnimation(); 1553 } 1554 disposeResizeBuffer(); 1555 // Our surface is gone 1556 if (mAttachInfo.mHardwareRenderer != null && 1557 mAttachInfo.mHardwareRenderer.isEnabled()) { 1558 mAttachInfo.mHardwareRenderer.destroy(true); 1559 } 1560 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1561 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1562 mFullRedrawNeeded = true; 1563 try { 1564 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1565 } catch (Surface.OutOfResourcesException e) { 1566 handleOutOfResourcesException(e); 1567 return; 1568 } 1569 } 1570 } catch (RemoteException e) { 1571 } 1572 1573 if (DEBUG_ORIENTATION) Log.v( 1574 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1575 1576 attachInfo.mWindowLeft = frame.left; 1577 attachInfo.mWindowTop = frame.top; 1578 1579 // !!FIXME!! This next section handles the case where we did not get the 1580 // window size we asked for. We should avoid this by getting a maximum size from 1581 // the window session beforehand. 1582 if (mWidth != frame.width() || mHeight != frame.height()) { 1583 mWidth = frame.width(); 1584 mHeight = frame.height(); 1585 } 1586 1587 if (mSurfaceHolder != null) { 1588 // The app owns the surface; tell it about what is going on. 1589 if (mSurface.isValid()) { 1590 // XXX .copyFrom() doesn't work! 1591 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1592 mSurfaceHolder.mSurface = mSurface; 1593 } 1594 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1595 mSurfaceHolder.mSurfaceLock.unlock(); 1596 if (mSurface.isValid()) { 1597 if (!hadSurface) { 1598 mSurfaceHolder.ungetCallbacks(); 1599 1600 mIsCreating = true; 1601 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1602 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1603 if (callbacks != null) { 1604 for (SurfaceHolder.Callback c : callbacks) { 1605 c.surfaceCreated(mSurfaceHolder); 1606 } 1607 } 1608 surfaceChanged = true; 1609 } 1610 if (surfaceChanged) { 1611 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1612 lp.format, mWidth, mHeight); 1613 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1614 if (callbacks != null) { 1615 for (SurfaceHolder.Callback c : callbacks) { 1616 c.surfaceChanged(mSurfaceHolder, lp.format, 1617 mWidth, mHeight); 1618 } 1619 } 1620 } 1621 mIsCreating = false; 1622 } else if (hadSurface) { 1623 mSurfaceHolder.ungetCallbacks(); 1624 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1625 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1626 if (callbacks != null) { 1627 for (SurfaceHolder.Callback c : callbacks) { 1628 c.surfaceDestroyed(mSurfaceHolder); 1629 } 1630 } 1631 mSurfaceHolder.mSurfaceLock.lock(); 1632 try { 1633 mSurfaceHolder.mSurface = new Surface(); 1634 } finally { 1635 mSurfaceHolder.mSurfaceLock.unlock(); 1636 } 1637 } 1638 } 1639 1640 if (mAttachInfo.mHardwareRenderer != null && 1641 mAttachInfo.mHardwareRenderer.isEnabled()) { 1642 if (hwInitialized || 1643 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1644 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1645 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1646 if (!hwInitialized) { 1647 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1648 mFullRedrawNeeded = true; 1649 } 1650 } 1651 } 1652 1653 if (!mStopped) { 1654 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1655 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1656 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1657 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1658 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1659 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1660 1661 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1662 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1663 + " mHeight=" + mHeight 1664 + " measuredHeight=" + host.getMeasuredHeight() 1665 + " coveredInsetsChanged=" + contentInsetsChanged); 1666 1667 // Ask host how big it wants to be 1668 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1669 1670 // Implementation of weights from WindowManager.LayoutParams 1671 // We just grow the dimensions as needed and re-measure if 1672 // needs be 1673 int width = host.getMeasuredWidth(); 1674 int height = host.getMeasuredHeight(); 1675 boolean measureAgain = false; 1676 1677 if (lp.horizontalWeight > 0.0f) { 1678 width += (int) ((mWidth - width) * lp.horizontalWeight); 1679 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1680 MeasureSpec.EXACTLY); 1681 measureAgain = true; 1682 } 1683 if (lp.verticalWeight > 0.0f) { 1684 height += (int) ((mHeight - height) * lp.verticalWeight); 1685 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1686 MeasureSpec.EXACTLY); 1687 measureAgain = true; 1688 } 1689 1690 if (measureAgain) { 1691 if (DEBUG_LAYOUT) Log.v(TAG, 1692 "And hey let's measure once more: width=" + width 1693 + " height=" + height); 1694 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1695 } 1696 1697 layoutRequested = true; 1698 } 1699 } 1700 } else { 1701 // Not the first pass and no window/insets/visibility change but the window 1702 // may have moved and we need check that and if so to update the left and right 1703 // in the attach info. We translate only the window frame since on window move 1704 // the window manager tells us only for the new frame but the insets are the 1705 // same and we do not want to translate them more than once. 1706 1707 // TODO: Well, we are checking whether the frame has changed similarly 1708 // to how this is done for the insets. This is however incorrect since 1709 // the insets and the frame are translated. For example, the old frame 1710 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1711 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1712 // true since we are comparing a not translated value to a translated one. 1713 // This scenario is rare but we may want to fix that. 1714 1715 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1716 || attachInfo.mWindowTop != frame.top); 1717 if (windowMoved) { 1718 if (mTranslator != null) { 1719 mTranslator.translateRectInScreenToAppWinFrame(frame); 1720 } 1721 attachInfo.mWindowLeft = frame.left; 1722 attachInfo.mWindowTop = frame.top; 1723 } 1724 } 1725 1726 final boolean didLayout = layoutRequested && !mStopped; 1727 boolean triggerGlobalLayoutListener = didLayout 1728 || attachInfo.mRecomputeGlobalAttributes; 1729 if (didLayout) { 1730 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1731 1732 // By this point all views have been sized and positioned 1733 // We can compute the transparent area 1734 1735 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1736 // start out transparent 1737 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1738 host.getLocationInWindow(mTmpLocation); 1739 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1740 mTmpLocation[0] + host.mRight - host.mLeft, 1741 mTmpLocation[1] + host.mBottom - host.mTop); 1742 1743 host.gatherTransparentRegion(mTransparentRegion); 1744 if (mTranslator != null) { 1745 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1746 } 1747 1748 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1749 mPreviousTransparentRegion.set(mTransparentRegion); 1750 mFullRedrawNeeded = true; 1751 // reconfigure window manager 1752 try { 1753 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1754 } catch (RemoteException e) { 1755 } 1756 } 1757 } 1758 1759 if (DBG) { 1760 System.out.println("======================================"); 1761 System.out.println("performTraversals -- after setFrame"); 1762 host.debug(); 1763 } 1764 } 1765 1766 if (triggerGlobalLayoutListener) { 1767 attachInfo.mRecomputeGlobalAttributes = false; 1768 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1769 1770 if (AccessibilityManager.getInstance(host.mContext).isEnabled()) { 1771 postSendWindowContentChangedCallback(mView); 1772 } 1773 } 1774 1775 if (computesInternalInsets) { 1776 // Clear the original insets. 1777 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1778 insets.reset(); 1779 1780 // Compute new insets in place. 1781 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1782 1783 // Tell the window manager. 1784 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1785 mLastGivenInsets.set(insets); 1786 1787 // Translate insets to screen coordinates if needed. 1788 final Rect contentInsets; 1789 final Rect visibleInsets; 1790 final Region touchableRegion; 1791 if (mTranslator != null) { 1792 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1793 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1794 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1795 } else { 1796 contentInsets = insets.contentInsets; 1797 visibleInsets = insets.visibleInsets; 1798 touchableRegion = insets.touchableRegion; 1799 } 1800 1801 try { 1802 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1803 contentInsets, visibleInsets, touchableRegion); 1804 } catch (RemoteException e) { 1805 } 1806 } 1807 } 1808 1809 boolean skipDraw = false; 1810 1811 if (mFirst) { 1812 // handle first focus request 1813 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1814 + mView.hasFocus()); 1815 if (mView != null) { 1816 if (!mView.hasFocus()) { 1817 mView.requestFocus(View.FOCUS_FORWARD); 1818 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1819 + mView.findFocus()); 1820 } else { 1821 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1822 + mView.findFocus()); 1823 } 1824 } 1825 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1826 // The first time we relayout the window, if the system is 1827 // doing window animations, we want to hold of on any future 1828 // draws until the animation is done. 1829 mWindowsAnimating = true; 1830 } 1831 } else if (mWindowsAnimating) { 1832 skipDraw = true; 1833 } 1834 1835 mFirst = false; 1836 mWillDrawSoon = false; 1837 mNewSurfaceNeeded = false; 1838 mViewVisibility = viewVisibility; 1839 1840 if (mAttachInfo.mHasWindowFocus) { 1841 final boolean imTarget = WindowManager.LayoutParams 1842 .mayUseInputMethod(mWindowAttributes.flags); 1843 if (imTarget != mLastWasImTarget) { 1844 mLastWasImTarget = imTarget; 1845 InputMethodManager imm = InputMethodManager.peekInstance(); 1846 if (imm != null && imTarget) { 1847 imm.startGettingWindowFocus(mView); 1848 imm.onWindowFocus(mView, mView.findFocus(), 1849 mWindowAttributes.softInputMode, 1850 !mHasHadWindowFocus, mWindowAttributes.flags); 1851 } 1852 } 1853 } 1854 1855 // Remember if we must report the next draw. 1856 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1857 mReportNextDraw = true; 1858 } 1859 1860 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1861 viewVisibility != View.VISIBLE; 1862 1863 if (!cancelDraw && !newSurface) { 1864 if (!skipDraw || mReportNextDraw) { 1865 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1866 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1867 mPendingTransitions.get(i).startChangingAnimations(); 1868 } 1869 mPendingTransitions.clear(); 1870 } 1871 1872 performDraw(); 1873 } 1874 } else { 1875 if (viewVisibility == View.VISIBLE) { 1876 // Try again 1877 scheduleTraversals(); 1878 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1879 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1880 mPendingTransitions.get(i).endChangingAnimations(); 1881 } 1882 mPendingTransitions.clear(); 1883 } 1884 } 1885 1886 mIsInTraversal = false; 1887 } 1888 1889 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1890 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1891 try { 1892 if (!mWindowSession.outOfMemory(mWindow) && 1893 Process.myUid() != Process.SYSTEM_UID) { 1894 Slog.w(TAG, "No processes killed for memory; killing self"); 1895 Process.killProcess(Process.myPid()); 1896 } 1897 } catch (RemoteException ex) { 1898 } 1899 mLayoutRequested = true; // ask wm for a new surface next time. 1900 } 1901 1902 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1903 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1904 try { 1905 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1906 } finally { 1907 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1908 } 1909 } 1910 1911 /** 1912 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1913 * is currently undergoing a layout pass. 1914 * 1915 * @return whether the view hierarchy is currently undergoing a layout pass 1916 */ 1917 boolean isInLayout() { 1918 return mInLayout; 1919 } 1920 1921 /** 1922 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1923 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1924 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1925 * all children in that container hierarchy are measured and laid out at the end of the layout 1926 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1927 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1928 * we check all of those views to see if any still have pending layout requests, which 1929 * indicates that they were not correctly handled by their container hierarchy. If that is 1930 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1931 * to blank containers, and force a second request/measure/layout pass in this frame. If 1932 * more requestLayout() calls are received during that second layout pass, we post those 1933 * requests to the next frame to avoid possible infinite loops. 1934 * 1935 * <p>The return value from this method indicates whether the request should proceed 1936 * (if it is a request during the first layout pass) or should be skipped and posted to the 1937 * next frame (if it is a request during the second layout pass).</p> 1938 * 1939 * @param view the view that requested the layout. 1940 * 1941 * @return true if request should proceed, false otherwise. 1942 */ 1943 boolean requestLayoutDuringLayout(final View view) { 1944 if (view.mParent == null || view.mAttachInfo == null) { 1945 // Would not normally trigger another layout, so just let it pass through as usual 1946 return true; 1947 } 1948 if (!mLayoutRequesters.contains(view)) { 1949 mLayoutRequesters.add(view); 1950 } 1951 if (!mHandlingLayoutInLayoutRequest) { 1952 // Let the request proceed normally; it will be processed in a second layout pass 1953 // if necessary 1954 return true; 1955 } else { 1956 // Don't let the request proceed during the second layout pass. 1957 // It will post to the next frame instead. 1958 return false; 1959 } 1960 } 1961 1962 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1963 int desiredWindowHeight) { 1964 mLayoutRequested = false; 1965 mScrollMayChange = true; 1966 mInLayout = true; 1967 1968 final View host = mView; 1969 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1970 Log.v(TAG, "Laying out " + host + " to (" + 1971 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1972 } 1973 1974 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1975 try { 1976 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1977 1978 mInLayout = false; 1979 int numViewsRequestingLayout = mLayoutRequesters.size(); 1980 if (numViewsRequestingLayout > 0) { 1981 // requestLayout() was called during layout. 1982 // If no layout-request flags are set on the requesting views, there is no problem. 1983 // If some requests are still pending, then we need to clear those flags and do 1984 // a full request/measure/layout pass to handle this situation. 1985 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1986 false); 1987 if (validLayoutRequesters != null) { 1988 // Set this flag to indicate that any further requests are happening during 1989 // the second pass, which may result in posting those requests to the next 1990 // frame instead 1991 mHandlingLayoutInLayoutRequest = true; 1992 1993 // Process fresh layout requests, then measure and layout 1994 int numValidRequests = validLayoutRequesters.size(); 1995 for (int i = 0; i < numValidRequests; ++i) { 1996 final View view = validLayoutRequesters.get(i); 1997 Log.w("View", "requestLayout() improperly called by " + view + 1998 " during layout: running second layout pass"); 1999 view.requestLayout(); 2000 } 2001 measureHierarchy(host, lp, mView.getContext().getResources(), 2002 desiredWindowWidth, desiredWindowHeight); 2003 mInLayout = true; 2004 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2005 2006 mHandlingLayoutInLayoutRequest = false; 2007 2008 // Check the valid requests again, this time without checking/clearing the 2009 // layout flags, since requests happening during the second pass get noop'd 2010 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2011 if (validLayoutRequesters != null) { 2012 final ArrayList<View> finalRequesters = validLayoutRequesters; 2013 // Post second-pass requests to the next frame 2014 getRunQueue().post(new Runnable() { 2015 @Override 2016 public void run() { 2017 int numValidRequests = finalRequesters.size(); 2018 for (int i = 0; i < numValidRequests; ++i) { 2019 final View view = finalRequesters.get(i); 2020 Log.w("View", "requestLayout() improperly called by " + view + 2021 " during second layout pass: posting in next frame"); 2022 view.requestLayout(); 2023 } 2024 } 2025 }); 2026 } 2027 } 2028 2029 } 2030 } finally { 2031 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2032 } 2033 mInLayout = false; 2034 } 2035 2036 /** 2037 * This method is called during layout when there have been calls to requestLayout() during 2038 * layout. It walks through the list of views that requested layout to determine which ones 2039 * still need it, based on visibility in the hierarchy and whether they have already been 2040 * handled (as is usually the case with ListView children). 2041 * 2042 * @param layoutRequesters The list of views that requested layout during layout 2043 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2044 * If so, the FORCE_LAYOUT flag was not set on requesters. 2045 * @return A list of the actual views that still need to be laid out. 2046 */ 2047 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2048 boolean secondLayoutRequests) { 2049 2050 int numViewsRequestingLayout = layoutRequesters.size(); 2051 ArrayList<View> validLayoutRequesters = null; 2052 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2053 View view = layoutRequesters.get(i); 2054 if (view != null && view.mAttachInfo != null && view.mParent != null && 2055 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2056 View.PFLAG_FORCE_LAYOUT)) { 2057 boolean gone = false; 2058 View parent = view; 2059 // Only trigger new requests for views in a non-GONE hierarchy 2060 while (parent != null) { 2061 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2062 gone = true; 2063 break; 2064 } 2065 if (parent.mParent instanceof View) { 2066 parent = (View) parent.mParent; 2067 } else { 2068 parent = null; 2069 } 2070 } 2071 if (!gone) { 2072 if (validLayoutRequesters == null) { 2073 validLayoutRequesters = new ArrayList<View>(); 2074 } 2075 validLayoutRequesters.add(view); 2076 } 2077 } 2078 } 2079 if (!secondLayoutRequests) { 2080 // If we're checking the layout flags, then we need to clean them up also 2081 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2082 View view = layoutRequesters.get(i); 2083 while (view != null && 2084 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2085 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2086 if (view.mParent instanceof View) { 2087 view = (View) view.mParent; 2088 } else { 2089 view = null; 2090 } 2091 } 2092 } 2093 } 2094 layoutRequesters.clear(); 2095 return validLayoutRequesters; 2096 } 2097 2098 public void requestTransparentRegion(View child) { 2099 // the test below should not fail unless someone is messing with us 2100 checkThread(); 2101 if (mView == child) { 2102 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2103 // Need to make sure we re-evaluate the window attributes next 2104 // time around, to ensure the window has the correct format. 2105 mWindowAttributesChanged = true; 2106 mWindowAttributesChangesFlag = 0; 2107 requestLayout(); 2108 } 2109 } 2110 2111 /** 2112 * Figures out the measure spec for the root view in a window based on it's 2113 * layout params. 2114 * 2115 * @param windowSize 2116 * The available width or height of the window 2117 * 2118 * @param rootDimension 2119 * The layout params for one dimension (width or height) of the 2120 * window. 2121 * 2122 * @return The measure spec to use to measure the root view. 2123 */ 2124 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2125 int measureSpec; 2126 switch (rootDimension) { 2127 2128 case ViewGroup.LayoutParams.MATCH_PARENT: 2129 // Window can't resize. Force root view to be windowSize. 2130 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2131 break; 2132 case ViewGroup.LayoutParams.WRAP_CONTENT: 2133 // Window can resize. Set max size for root view. 2134 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2135 break; 2136 default: 2137 // Window wants to be an exact size. Force root view to be that size. 2138 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2139 break; 2140 } 2141 return measureSpec; 2142 } 2143 2144 int mHardwareYOffset; 2145 int mResizeAlpha; 2146 final Paint mResizePaint = new Paint(); 2147 2148 public void onHardwarePreDraw(HardwareCanvas canvas) { 2149 canvas.translate(0, -mHardwareYOffset); 2150 } 2151 2152 public void onHardwarePostDraw(HardwareCanvas canvas) { 2153 if (mResizeBuffer != null) { 2154 mResizePaint.setAlpha(mResizeAlpha); 2155 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2156 } 2157 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2158 } 2159 2160 /** 2161 * @hide 2162 */ 2163 void outputDisplayList(View view) { 2164 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2165 DisplayList displayList = view.getDisplayList(); 2166 if (displayList != null) { 2167 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2168 } 2169 } 2170 } 2171 2172 /** 2173 * @see #PROPERTY_PROFILE_RENDERING 2174 */ 2175 private void profileRendering(boolean enabled) { 2176 if (mProfileRendering) { 2177 mRenderProfilingEnabled = enabled; 2178 2179 if (mRenderProfiler != null) { 2180 mChoreographer.removeFrameCallback(mRenderProfiler); 2181 } 2182 if (mRenderProfilingEnabled) { 2183 if (mRenderProfiler == null) { 2184 mRenderProfiler = new Choreographer.FrameCallback() { 2185 @Override 2186 public void doFrame(long frameTimeNanos) { 2187 mDirty.set(0, 0, mWidth, mHeight); 2188 scheduleTraversals(); 2189 if (mRenderProfilingEnabled) { 2190 mChoreographer.postFrameCallback(mRenderProfiler); 2191 } 2192 } 2193 }; 2194 } 2195 mChoreographer.postFrameCallback(mRenderProfiler); 2196 } else { 2197 mRenderProfiler = null; 2198 } 2199 } 2200 } 2201 2202 /** 2203 * Called from draw() when DEBUG_FPS is enabled 2204 */ 2205 private void trackFPS() { 2206 // Tracks frames per second drawn. First value in a series of draws may be bogus 2207 // because it down not account for the intervening idle time 2208 long nowTime = System.currentTimeMillis(); 2209 if (mFpsStartTime < 0) { 2210 mFpsStartTime = mFpsPrevTime = nowTime; 2211 mFpsNumFrames = 0; 2212 } else { 2213 ++mFpsNumFrames; 2214 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2215 long frameTime = nowTime - mFpsPrevTime; 2216 long totalTime = nowTime - mFpsStartTime; 2217 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2218 mFpsPrevTime = nowTime; 2219 if (totalTime > 1000) { 2220 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2221 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2222 mFpsStartTime = nowTime; 2223 mFpsNumFrames = 0; 2224 } 2225 } 2226 } 2227 2228 private void performDraw() { 2229 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2230 return; 2231 } 2232 2233 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2234 mFullRedrawNeeded = false; 2235 2236 mIsDrawing = true; 2237 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2238 try { 2239 draw(fullRedrawNeeded); 2240 } finally { 2241 mIsDrawing = false; 2242 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2243 } 2244 2245 if (mReportNextDraw) { 2246 mReportNextDraw = false; 2247 2248 if (LOCAL_LOGV) { 2249 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2250 } 2251 if (mSurfaceHolder != null && mSurface.isValid()) { 2252 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2253 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2254 if (callbacks != null) { 2255 for (SurfaceHolder.Callback c : callbacks) { 2256 if (c instanceof SurfaceHolder.Callback2) { 2257 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2258 mSurfaceHolder); 2259 } 2260 } 2261 } 2262 } 2263 try { 2264 mWindowSession.finishDrawing(mWindow); 2265 } catch (RemoteException e) { 2266 } 2267 } 2268 } 2269 2270 private void draw(boolean fullRedrawNeeded) { 2271 Surface surface = mSurface; 2272 if (!surface.isValid()) { 2273 return; 2274 } 2275 2276 if (DEBUG_FPS) { 2277 trackFPS(); 2278 } 2279 2280 if (!sFirstDrawComplete) { 2281 synchronized (sFirstDrawHandlers) { 2282 sFirstDrawComplete = true; 2283 final int count = sFirstDrawHandlers.size(); 2284 for (int i = 0; i< count; i++) { 2285 mHandler.post(sFirstDrawHandlers.get(i)); 2286 } 2287 } 2288 } 2289 2290 scrollToRectOrFocus(null, false); 2291 2292 final AttachInfo attachInfo = mAttachInfo; 2293 if (attachInfo.mViewScrollChanged) { 2294 attachInfo.mViewScrollChanged = false; 2295 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2296 } 2297 2298 int yoff; 2299 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2300 if (animating) { 2301 yoff = mScroller.getCurrY(); 2302 } else { 2303 yoff = mScrollY; 2304 } 2305 if (mCurScrollY != yoff) { 2306 mCurScrollY = yoff; 2307 fullRedrawNeeded = true; 2308 } 2309 2310 final float appScale = attachInfo.mApplicationScale; 2311 final boolean scalingRequired = attachInfo.mScalingRequired; 2312 2313 int resizeAlpha = 0; 2314 if (mResizeBuffer != null) { 2315 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2316 if (deltaTime < mResizeBufferDuration) { 2317 float amt = deltaTime/(float) mResizeBufferDuration; 2318 amt = mResizeInterpolator.getInterpolation(amt); 2319 animating = true; 2320 resizeAlpha = 255 - (int)(amt*255); 2321 } else { 2322 disposeResizeBuffer(); 2323 } 2324 } 2325 2326 final Rect dirty = mDirty; 2327 if (mSurfaceHolder != null) { 2328 // The app owns the surface, we won't draw. 2329 dirty.setEmpty(); 2330 if (animating) { 2331 if (mScroller != null) { 2332 mScroller.abortAnimation(); 2333 } 2334 disposeResizeBuffer(); 2335 } 2336 return; 2337 } 2338 2339 if (fullRedrawNeeded) { 2340 attachInfo.mIgnoreDirtyState = true; 2341 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2342 } 2343 2344 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2345 Log.v(TAG, "Draw " + mView + "/" 2346 + mWindowAttributes.getTitle() 2347 + ": dirty={" + dirty.left + "," + dirty.top 2348 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2349 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2350 appScale + ", width=" + mWidth + ", height=" + mHeight); 2351 } 2352 2353 invalidateDisplayLists(); 2354 2355 attachInfo.mTreeObserver.dispatchOnDraw(); 2356 2357 if (!dirty.isEmpty() || mIsAnimating) { 2358 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2359 // Draw with hardware renderer. 2360 mIsAnimating = false; 2361 mHardwareYOffset = yoff; 2362 mResizeAlpha = resizeAlpha; 2363 2364 mCurrentDirty.set(dirty); 2365 dirty.setEmpty(); 2366 2367 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2368 animating ? null : mCurrentDirty); 2369 } else { 2370 // If we get here with a disabled & requested hardware renderer, something went 2371 // wrong (an invalidate posted right before we destroyed the hardware surface 2372 // for instance) so we should just bail out. Locking the surface with software 2373 // rendering at this point would lock it forever and prevent hardware renderer 2374 // from doing its job when it comes back. 2375 // Before we request a new frame we must however attempt to reinitiliaze the 2376 // hardware renderer if it's in requested state. This would happen after an 2377 // eglTerminate() for instance. 2378 if (attachInfo.mHardwareRenderer != null && 2379 !attachInfo.mHardwareRenderer.isEnabled() && 2380 attachInfo.mHardwareRenderer.isRequested()) { 2381 2382 try { 2383 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2384 mHolder.getSurface()); 2385 } catch (Surface.OutOfResourcesException e) { 2386 handleOutOfResourcesException(e); 2387 return; 2388 } 2389 2390 mFullRedrawNeeded = true; 2391 scheduleTraversals(); 2392 return; 2393 } 2394 2395 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2396 return; 2397 } 2398 } 2399 } 2400 2401 if (animating) { 2402 mFullRedrawNeeded = true; 2403 scheduleTraversals(); 2404 } 2405 } 2406 2407 /** 2408 * @return true if drawing was succesfull, false if an error occurred 2409 */ 2410 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2411 boolean scalingRequired, Rect dirty) { 2412 2413 // Draw with software renderer. 2414 Canvas canvas; 2415 try { 2416 int left = dirty.left; 2417 int top = dirty.top; 2418 int right = dirty.right; 2419 int bottom = dirty.bottom; 2420 2421 canvas = mSurface.lockCanvas(dirty); 2422 2423 // The dirty rectangle can be modified by Surface.lockCanvas() 2424 //noinspection ConstantConditions 2425 if (left != dirty.left || top != dirty.top || right != dirty.right || 2426 bottom != dirty.bottom) { 2427 attachInfo.mIgnoreDirtyState = true; 2428 } 2429 2430 // TODO: Do this in native 2431 canvas.setDensity(mDensity); 2432 } catch (Surface.OutOfResourcesException e) { 2433 handleOutOfResourcesException(e); 2434 return false; 2435 } catch (IllegalArgumentException e) { 2436 Log.e(TAG, "Could not lock surface", e); 2437 // Don't assume this is due to out of memory, it could be 2438 // something else, and if it is something else then we could 2439 // kill stuff (or ourself) for no reason. 2440 mLayoutRequested = true; // ask wm for a new surface next time. 2441 return false; 2442 } 2443 2444 try { 2445 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2446 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2447 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2448 //canvas.drawARGB(255, 255, 0, 0); 2449 } 2450 2451 // If this bitmap's format includes an alpha channel, we 2452 // need to clear it before drawing so that the child will 2453 // properly re-composite its drawing on a transparent 2454 // background. This automatically respects the clip/dirty region 2455 // or 2456 // If we are applying an offset, we need to clear the area 2457 // where the offset doesn't appear to avoid having garbage 2458 // left in the blank areas. 2459 if (!canvas.isOpaque() || yoff != 0) { 2460 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2461 } 2462 2463 dirty.setEmpty(); 2464 mIsAnimating = false; 2465 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2466 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2467 2468 if (DEBUG_DRAW) { 2469 Context cxt = mView.getContext(); 2470 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2471 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2472 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2473 } 2474 try { 2475 canvas.translate(0, -yoff); 2476 if (mTranslator != null) { 2477 mTranslator.translateCanvas(canvas); 2478 } 2479 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2480 attachInfo.mSetIgnoreDirtyState = false; 2481 2482 mView.draw(canvas); 2483 2484 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2485 } finally { 2486 if (!attachInfo.mSetIgnoreDirtyState) { 2487 // Only clear the flag if it was not set during the mView.draw() call 2488 attachInfo.mIgnoreDirtyState = false; 2489 } 2490 } 2491 } finally { 2492 try { 2493 surface.unlockCanvasAndPost(canvas); 2494 } catch (IllegalArgumentException e) { 2495 Log.e(TAG, "Could not unlock surface", e); 2496 mLayoutRequested = true; // ask wm for a new surface next time. 2497 //noinspection ReturnInsideFinallyBlock 2498 return false; 2499 } 2500 2501 if (LOCAL_LOGV) { 2502 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2503 } 2504 } 2505 return true; 2506 } 2507 2508 /** 2509 * We want to draw a highlight around the current accessibility focused. 2510 * Since adding a style for all possible view is not a viable option we 2511 * have this specialized drawing method. 2512 * 2513 * Note: We are doing this here to be able to draw the highlight for 2514 * virtual views in addition to real ones. 2515 * 2516 * @param canvas The canvas on which to draw. 2517 */ 2518 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2519 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2520 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2521 return; 2522 } 2523 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2524 return; 2525 } 2526 Drawable drawable = getAccessibilityFocusedDrawable(); 2527 if (drawable == null) { 2528 return; 2529 } 2530 AccessibilityNodeProvider provider = 2531 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2532 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2533 if (provider == null) { 2534 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2535 } else { 2536 if (mAccessibilityFocusedVirtualView == null) { 2537 return; 2538 } 2539 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2540 } 2541 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2542 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2543 drawable.setBounds(bounds); 2544 drawable.draw(canvas); 2545 } 2546 2547 private Drawable getAccessibilityFocusedDrawable() { 2548 if (mAttachInfo != null) { 2549 // Lazily load the accessibility focus drawable. 2550 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2551 TypedValue value = new TypedValue(); 2552 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2553 R.attr.accessibilityFocusedDrawable, value, true); 2554 if (resolved) { 2555 mAttachInfo.mAccessibilityFocusDrawable = 2556 mView.mContext.getResources().getDrawable(value.resourceId); 2557 } 2558 } 2559 return mAttachInfo.mAccessibilityFocusDrawable; 2560 } 2561 return null; 2562 } 2563 2564 void invalidateDisplayLists() { 2565 final ArrayList<DisplayList> displayLists = mDisplayLists; 2566 final int count = displayLists.size(); 2567 2568 for (int i = 0; i < count; i++) { 2569 final DisplayList displayList = displayLists.get(i); 2570 if (displayList.isDirty()) { 2571 displayList.clear(); 2572 } 2573 } 2574 2575 displayLists.clear(); 2576 } 2577 2578 /** 2579 * @hide 2580 */ 2581 public void setDrawDuringWindowsAnimating(boolean value) { 2582 mDrawDuringWindowsAnimating = value; 2583 if (value) { 2584 handleDispatchDoneAnimating(); 2585 } 2586 } 2587 2588 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2589 final View.AttachInfo attachInfo = mAttachInfo; 2590 final Rect ci = attachInfo.mContentInsets; 2591 final Rect vi = attachInfo.mVisibleInsets; 2592 int scrollY = 0; 2593 boolean handled = false; 2594 2595 if (vi.left > ci.left || vi.top > ci.top 2596 || vi.right > ci.right || vi.bottom > ci.bottom) { 2597 // We'll assume that we aren't going to change the scroll 2598 // offset, since we want to avoid that unless it is actually 2599 // going to make the focus visible... otherwise we scroll 2600 // all over the place. 2601 scrollY = mScrollY; 2602 // We can be called for two different situations: during a draw, 2603 // to update the scroll position if the focus has changed (in which 2604 // case 'rectangle' is null), or in response to a 2605 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2606 // is non-null and we just want to scroll to whatever that 2607 // rectangle is). 2608 final View focus = mView.findFocus(); 2609 if (focus == null) { 2610 return false; 2611 } 2612 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2613 if (focus != lastScrolledFocus) { 2614 // If the focus has changed, then ignore any requests to scroll 2615 // to a rectangle; first we want to make sure the entire focus 2616 // view is visible. 2617 rectangle = null; 2618 } 2619 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2620 + " rectangle=" + rectangle + " ci=" + ci 2621 + " vi=" + vi); 2622 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2623 // Optimization: if the focus hasn't changed since last 2624 // time, and no layout has happened, then just leave things 2625 // as they are. 2626 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2627 + mScrollY + " vi=" + vi.toShortString()); 2628 } else { 2629 // We need to determine if the currently focused view is 2630 // within the visible part of the window and, if not, apply 2631 // a pan so it can be seen. 2632 mLastScrolledFocus = new WeakReference<View>(focus); 2633 mScrollMayChange = false; 2634 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2635 // Try to find the rectangle from the focus view. 2636 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2637 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2638 + mView.getWidth() + " h=" + mView.getHeight() 2639 + " ci=" + ci.toShortString() 2640 + " vi=" + vi.toShortString()); 2641 if (rectangle == null) { 2642 focus.getFocusedRect(mTempRect); 2643 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2644 + ": focusRect=" + mTempRect.toShortString()); 2645 if (mView instanceof ViewGroup) { 2646 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2647 focus, mTempRect); 2648 } 2649 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2650 "Focus in window: focusRect=" 2651 + mTempRect.toShortString() 2652 + " visRect=" + mVisRect.toShortString()); 2653 } else { 2654 mTempRect.set(rectangle); 2655 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2656 "Request scroll to rect: " 2657 + mTempRect.toShortString() 2658 + " visRect=" + mVisRect.toShortString()); 2659 } 2660 if (mTempRect.intersect(mVisRect)) { 2661 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2662 "Focus window visible rect: " 2663 + mTempRect.toShortString()); 2664 if (mTempRect.height() > 2665 (mView.getHeight()-vi.top-vi.bottom)) { 2666 // If the focus simply is not going to fit, then 2667 // best is probably just to leave things as-is. 2668 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2669 "Too tall; leaving scrollY=" + scrollY); 2670 } else if ((mTempRect.top-scrollY) < vi.top) { 2671 scrollY -= vi.top - (mTempRect.top-scrollY); 2672 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2673 "Top covered; scrollY=" + scrollY); 2674 } else if ((mTempRect.bottom-scrollY) 2675 > (mView.getHeight()-vi.bottom)) { 2676 scrollY += (mTempRect.bottom-scrollY) 2677 - (mView.getHeight()-vi.bottom); 2678 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2679 "Bottom covered; scrollY=" + scrollY); 2680 } 2681 handled = true; 2682 } 2683 } 2684 } 2685 } 2686 2687 if (scrollY != mScrollY) { 2688 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2689 + mScrollY + " , new=" + scrollY); 2690 if (!immediate && mResizeBuffer == null) { 2691 if (mScroller == null) { 2692 mScroller = new Scroller(mView.getContext()); 2693 } 2694 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2695 } else if (mScroller != null) { 2696 mScroller.abortAnimation(); 2697 } 2698 mScrollY = scrollY; 2699 } 2700 2701 return handled; 2702 } 2703 2704 /** 2705 * @hide 2706 */ 2707 public View getAccessibilityFocusedHost() { 2708 return mAccessibilityFocusedHost; 2709 } 2710 2711 /** 2712 * @hide 2713 */ 2714 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2715 return mAccessibilityFocusedVirtualView; 2716 } 2717 2718 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2719 // If we have a virtual view with accessibility focus we need 2720 // to clear the focus and invalidate the virtual view bounds. 2721 if (mAccessibilityFocusedVirtualView != null) { 2722 2723 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2724 View focusHost = mAccessibilityFocusedHost; 2725 2726 // Wipe the state of the current accessibility focus since 2727 // the call into the provider to clear accessibility focus 2728 // will fire an accessibility event which will end up calling 2729 // this method and we want to have clean state when this 2730 // invocation happens. 2731 mAccessibilityFocusedHost = null; 2732 mAccessibilityFocusedVirtualView = null; 2733 2734 // Clear accessibility focus on the host after clearing state since 2735 // this method may be reentrant. 2736 focusHost.clearAccessibilityFocusNoCallbacks(); 2737 2738 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2739 if (provider != null) { 2740 // Invalidate the area of the cleared accessibility focus. 2741 focusNode.getBoundsInParent(mTempRect); 2742 focusHost.invalidate(mTempRect); 2743 // Clear accessibility focus in the virtual node. 2744 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2745 focusNode.getSourceNodeId()); 2746 provider.performAction(virtualNodeId, 2747 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2748 } 2749 focusNode.recycle(); 2750 } 2751 if (mAccessibilityFocusedHost != null) { 2752 // Clear accessibility focus in the view. 2753 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2754 } 2755 2756 // Set the new focus host and node. 2757 mAccessibilityFocusedHost = view; 2758 mAccessibilityFocusedVirtualView = node; 2759 } 2760 2761 public void requestChildFocus(View child, View focused) { 2762 if (DEBUG_INPUT_RESIZE) { 2763 Log.v(TAG, "Request child focus: focus now " + focused); 2764 } 2765 checkThread(); 2766 scheduleTraversals(); 2767 } 2768 2769 public void clearChildFocus(View child) { 2770 if (DEBUG_INPUT_RESIZE) { 2771 Log.v(TAG, "Clearing child focus"); 2772 } 2773 checkThread(); 2774 scheduleTraversals(); 2775 } 2776 2777 @Override 2778 public ViewParent getParentForAccessibility() { 2779 return null; 2780 } 2781 2782 public void focusableViewAvailable(View v) { 2783 checkThread(); 2784 if (mView != null) { 2785 if (!mView.hasFocus()) { 2786 v.requestFocus(); 2787 } else { 2788 // the one case where will transfer focus away from the current one 2789 // is if the current view is a view group that prefers to give focus 2790 // to its children first AND the view is a descendant of it. 2791 View focused = mView.findFocus(); 2792 if (focused instanceof ViewGroup) { 2793 ViewGroup group = (ViewGroup) focused; 2794 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2795 && isViewDescendantOf(v, focused)) { 2796 v.requestFocus(); 2797 } 2798 } 2799 } 2800 } 2801 } 2802 2803 public void recomputeViewAttributes(View child) { 2804 checkThread(); 2805 if (mView == child) { 2806 mAttachInfo.mRecomputeGlobalAttributes = true; 2807 if (!mWillDrawSoon) { 2808 scheduleTraversals(); 2809 } 2810 } 2811 } 2812 2813 void dispatchDetachedFromWindow() { 2814 if (mView != null && mView.mAttachInfo != null) { 2815 if (mAttachInfo.mHardwareRenderer != null && 2816 mAttachInfo.mHardwareRenderer.isEnabled()) { 2817 mAttachInfo.mHardwareRenderer.validate(); 2818 } 2819 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2820 mView.dispatchDetachedFromWindow(); 2821 } 2822 2823 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2824 mAccessibilityManager.removeAccessibilityStateChangeListener( 2825 mAccessibilityInteractionConnectionManager); 2826 removeSendWindowContentChangedCallback(); 2827 2828 destroyHardwareRenderer(); 2829 2830 setAccessibilityFocus(null, null); 2831 2832 mView = null; 2833 mAttachInfo.mRootView = null; 2834 mAttachInfo.mSurface = null; 2835 2836 mSurface.release(); 2837 2838 if (mInputQueueCallback != null && mInputQueue != null) { 2839 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2840 mInputQueue.dispose(); 2841 mInputQueueCallback = null; 2842 mInputQueue = null; 2843 } 2844 if (mInputEventReceiver != null) { 2845 mInputEventReceiver.dispose(); 2846 mInputEventReceiver = null; 2847 } 2848 try { 2849 mWindowSession.remove(mWindow); 2850 } catch (RemoteException e) { 2851 } 2852 2853 // Dispose the input channel after removing the window so the Window Manager 2854 // doesn't interpret the input channel being closed as an abnormal termination. 2855 if (mInputChannel != null) { 2856 mInputChannel.dispose(); 2857 mInputChannel = null; 2858 } 2859 2860 unscheduleTraversals(); 2861 } 2862 2863 void updateConfiguration(Configuration config, boolean force) { 2864 if (DEBUG_CONFIGURATION) Log.v(TAG, 2865 "Applying new config to window " 2866 + mWindowAttributes.getTitle() 2867 + ": " + config); 2868 2869 CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded(); 2870 if (ci != null) { 2871 config = new Configuration(config); 2872 ci.applyToConfiguration(mNoncompatDensity, config); 2873 } 2874 2875 synchronized (sConfigCallbacks) { 2876 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2877 sConfigCallbacks.get(i).onConfigurationChanged(config); 2878 } 2879 } 2880 if (mView != null) { 2881 // At this point the resources have been updated to 2882 // have the most recent config, whatever that is. Use 2883 // the one in them which may be newer. 2884 config = mView.getResources().getConfiguration(); 2885 if (force || mLastConfiguration.diff(config) != 0) { 2886 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2887 final int currentLayoutDirection = config.getLayoutDirection(); 2888 mLastConfiguration.setTo(config); 2889 if (lastLayoutDirection != currentLayoutDirection && 2890 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2891 mView.setLayoutDirection(currentLayoutDirection); 2892 } 2893 mView.dispatchConfigurationChanged(config); 2894 } 2895 } 2896 } 2897 2898 /** 2899 * Return true if child is an ancestor of parent, (or equal to the parent). 2900 */ 2901 public static boolean isViewDescendantOf(View child, View parent) { 2902 if (child == parent) { 2903 return true; 2904 } 2905 2906 final ViewParent theParent = child.getParent(); 2907 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2908 } 2909 2910 private static void forceLayout(View view) { 2911 view.forceLayout(); 2912 if (view instanceof ViewGroup) { 2913 ViewGroup group = (ViewGroup) view; 2914 final int count = group.getChildCount(); 2915 for (int i = 0; i < count; i++) { 2916 forceLayout(group.getChildAt(i)); 2917 } 2918 } 2919 } 2920 2921 private final static int MSG_INVALIDATE = 1; 2922 private final static int MSG_INVALIDATE_RECT = 2; 2923 private final static int MSG_DIE = 3; 2924 private final static int MSG_RESIZED = 4; 2925 private final static int MSG_RESIZED_REPORT = 5; 2926 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2927 private final static int MSG_DISPATCH_KEY = 7; 2928 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2929 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2930 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2931 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2932 private final static int MSG_CHECK_FOCUS = 13; 2933 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2934 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2935 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2936 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2937 private final static int MSG_UPDATE_CONFIGURATION = 18; 2938 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2939 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2940 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2941 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2942 private final static int MSG_INVALIDATE_WORLD = 23; 2943 private final static int MSG_WINDOW_MOVED = 24; 2944 2945 final class ViewRootHandler extends Handler { 2946 @Override 2947 public String getMessageName(Message message) { 2948 switch (message.what) { 2949 case MSG_INVALIDATE: 2950 return "MSG_INVALIDATE"; 2951 case MSG_INVALIDATE_RECT: 2952 return "MSG_INVALIDATE_RECT"; 2953 case MSG_DIE: 2954 return "MSG_DIE"; 2955 case MSG_RESIZED: 2956 return "MSG_RESIZED"; 2957 case MSG_RESIZED_REPORT: 2958 return "MSG_RESIZED_REPORT"; 2959 case MSG_WINDOW_FOCUS_CHANGED: 2960 return "MSG_WINDOW_FOCUS_CHANGED"; 2961 case MSG_DISPATCH_KEY: 2962 return "MSG_DISPATCH_KEY"; 2963 case MSG_DISPATCH_APP_VISIBILITY: 2964 return "MSG_DISPATCH_APP_VISIBILITY"; 2965 case MSG_DISPATCH_GET_NEW_SURFACE: 2966 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2967 case MSG_DISPATCH_KEY_FROM_IME: 2968 return "MSG_DISPATCH_KEY_FROM_IME"; 2969 case MSG_FINISH_INPUT_CONNECTION: 2970 return "MSG_FINISH_INPUT_CONNECTION"; 2971 case MSG_CHECK_FOCUS: 2972 return "MSG_CHECK_FOCUS"; 2973 case MSG_CLOSE_SYSTEM_DIALOGS: 2974 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2975 case MSG_DISPATCH_DRAG_EVENT: 2976 return "MSG_DISPATCH_DRAG_EVENT"; 2977 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2978 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2979 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2980 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2981 case MSG_UPDATE_CONFIGURATION: 2982 return "MSG_UPDATE_CONFIGURATION"; 2983 case MSG_PROCESS_INPUT_EVENTS: 2984 return "MSG_PROCESS_INPUT_EVENTS"; 2985 case MSG_DISPATCH_SCREEN_STATE: 2986 return "MSG_DISPATCH_SCREEN_STATE"; 2987 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2988 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2989 case MSG_DISPATCH_DONE_ANIMATING: 2990 return "MSG_DISPATCH_DONE_ANIMATING"; 2991 case MSG_WINDOW_MOVED: 2992 return "MSG_WINDOW_MOVED"; 2993 } 2994 return super.getMessageName(message); 2995 } 2996 2997 @Override 2998 public void handleMessage(Message msg) { 2999 switch (msg.what) { 3000 case MSG_INVALIDATE: 3001 ((View) msg.obj).invalidate(); 3002 break; 3003 case MSG_INVALIDATE_RECT: 3004 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3005 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3006 info.recycle(); 3007 break; 3008 case MSG_PROCESS_INPUT_EVENTS: 3009 mProcessInputEventsScheduled = false; 3010 doProcessInputEvents(); 3011 break; 3012 case MSG_DISPATCH_APP_VISIBILITY: 3013 handleAppVisibility(msg.arg1 != 0); 3014 break; 3015 case MSG_DISPATCH_GET_NEW_SURFACE: 3016 handleGetNewSurface(); 3017 break; 3018 case MSG_RESIZED: { 3019 // Recycled in the fall through... 3020 SomeArgs args = (SomeArgs) msg.obj; 3021 if (mWinFrame.equals(args.arg1) 3022 && mPendingOverscanInsets.equals(args.arg5) 3023 && mPendingContentInsets.equals(args.arg2) 3024 && mPendingVisibleInsets.equals(args.arg3) 3025 && args.arg4 == null) { 3026 break; 3027 } 3028 } // fall through... 3029 case MSG_RESIZED_REPORT: 3030 if (mAdded) { 3031 SomeArgs args = (SomeArgs) msg.obj; 3032 3033 Configuration config = (Configuration) args.arg4; 3034 if (config != null) { 3035 updateConfiguration(config, false); 3036 } 3037 3038 mWinFrame.set((Rect) args.arg1); 3039 mPendingOverscanInsets.set((Rect) args.arg5); 3040 mPendingContentInsets.set((Rect) args.arg2); 3041 mPendingVisibleInsets.set((Rect) args.arg3); 3042 3043 args.recycle(); 3044 3045 if (msg.what == MSG_RESIZED_REPORT) { 3046 mReportNextDraw = true; 3047 } 3048 3049 if (mView != null) { 3050 forceLayout(mView); 3051 } 3052 3053 requestLayout(); 3054 } 3055 break; 3056 case MSG_WINDOW_MOVED: 3057 if (mAdded) { 3058 final int w = mWinFrame.width(); 3059 final int h = mWinFrame.height(); 3060 final int l = msg.arg1; 3061 final int t = msg.arg2; 3062 mWinFrame.left = l; 3063 mWinFrame.right = l + w; 3064 mWinFrame.top = t; 3065 mWinFrame.bottom = t + h; 3066 3067 if (mView != null) { 3068 forceLayout(mView); 3069 } 3070 requestLayout(); 3071 } 3072 break; 3073 case MSG_WINDOW_FOCUS_CHANGED: { 3074 if (mAdded) { 3075 boolean hasWindowFocus = msg.arg1 != 0; 3076 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3077 3078 profileRendering(hasWindowFocus); 3079 3080 if (hasWindowFocus) { 3081 boolean inTouchMode = msg.arg2 != 0; 3082 ensureTouchModeLocally(inTouchMode); 3083 3084 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3085 mFullRedrawNeeded = true; 3086 try { 3087 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3088 mWidth, mHeight, mHolder.getSurface()); 3089 } catch (Surface.OutOfResourcesException e) { 3090 Log.e(TAG, "OutOfResourcesException locking surface", e); 3091 try { 3092 if (!mWindowSession.outOfMemory(mWindow)) { 3093 Slog.w(TAG, "No processes killed for memory; killing self"); 3094 Process.killProcess(Process.myPid()); 3095 } 3096 } catch (RemoteException ex) { 3097 } 3098 // Retry in a bit. 3099 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3100 return; 3101 } 3102 } 3103 } 3104 3105 mLastWasImTarget = WindowManager.LayoutParams 3106 .mayUseInputMethod(mWindowAttributes.flags); 3107 3108 InputMethodManager imm = InputMethodManager.peekInstance(); 3109 if (mView != null) { 3110 if (hasWindowFocus && imm != null && mLastWasImTarget) { 3111 imm.startGettingWindowFocus(mView); 3112 } 3113 mAttachInfo.mKeyDispatchState.reset(); 3114 mView.dispatchWindowFocusChanged(hasWindowFocus); 3115 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3116 } 3117 3118 // Note: must be done after the focus change callbacks, 3119 // so all of the view state is set up correctly. 3120 if (hasWindowFocus) { 3121 if (imm != null && mLastWasImTarget) { 3122 imm.onWindowFocus(mView, mView.findFocus(), 3123 mWindowAttributes.softInputMode, 3124 !mHasHadWindowFocus, mWindowAttributes.flags); 3125 } 3126 // Clear the forward bit. We can just do this directly, since 3127 // the window manager doesn't care about it. 3128 mWindowAttributes.softInputMode &= 3129 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3130 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3131 .softInputMode &= 3132 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3133 mHasHadWindowFocus = true; 3134 } 3135 3136 setAccessibilityFocus(null, null); 3137 3138 if (mView != null && mAccessibilityManager.isEnabled()) { 3139 if (hasWindowFocus) { 3140 mView.sendAccessibilityEvent( 3141 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3142 } 3143 } 3144 } 3145 } break; 3146 case MSG_DIE: 3147 doDie(); 3148 break; 3149 case MSG_DISPATCH_KEY: { 3150 KeyEvent event = (KeyEvent)msg.obj; 3151 enqueueInputEvent(event, null, 0, true); 3152 } break; 3153 case MSG_DISPATCH_KEY_FROM_IME: { 3154 if (LOCAL_LOGV) Log.v( 3155 TAG, "Dispatching key " 3156 + msg.obj + " from IME to " + mView); 3157 KeyEvent event = (KeyEvent)msg.obj; 3158 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3159 // The IME is trying to say this event is from the 3160 // system! Bad bad bad! 3161 //noinspection UnusedAssignment 3162 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3163 } 3164 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3165 } break; 3166 case MSG_FINISH_INPUT_CONNECTION: { 3167 InputMethodManager imm = InputMethodManager.peekInstance(); 3168 if (imm != null) { 3169 imm.reportFinishInputConnection((InputConnection)msg.obj); 3170 } 3171 } break; 3172 case MSG_CHECK_FOCUS: { 3173 InputMethodManager imm = InputMethodManager.peekInstance(); 3174 if (imm != null) { 3175 imm.checkFocus(); 3176 } 3177 } break; 3178 case MSG_CLOSE_SYSTEM_DIALOGS: { 3179 if (mView != null) { 3180 mView.onCloseSystemDialogs((String)msg.obj); 3181 } 3182 } break; 3183 case MSG_DISPATCH_DRAG_EVENT: 3184 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3185 DragEvent event = (DragEvent)msg.obj; 3186 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3187 handleDragEvent(event); 3188 } break; 3189 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3190 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3191 } break; 3192 case MSG_UPDATE_CONFIGURATION: { 3193 Configuration config = (Configuration)msg.obj; 3194 if (config.isOtherSeqNewer(mLastConfiguration)) { 3195 config = mLastConfiguration; 3196 } 3197 updateConfiguration(config, false); 3198 } break; 3199 case MSG_DISPATCH_SCREEN_STATE: { 3200 if (mView != null) { 3201 handleScreenStateChange(msg.arg1 == 1); 3202 } 3203 } break; 3204 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3205 setAccessibilityFocus(null, null); 3206 } break; 3207 case MSG_DISPATCH_DONE_ANIMATING: { 3208 handleDispatchDoneAnimating(); 3209 } break; 3210 case MSG_INVALIDATE_WORLD: { 3211 if (mView != null) { 3212 invalidateWorld(mView); 3213 } 3214 } break; 3215 } 3216 } 3217 } 3218 3219 final ViewRootHandler mHandler = new ViewRootHandler(); 3220 3221 /** 3222 * Something in the current window tells us we need to change the touch mode. For 3223 * example, we are not in touch mode, and the user touches the screen. 3224 * 3225 * If the touch mode has changed, tell the window manager, and handle it locally. 3226 * 3227 * @param inTouchMode Whether we want to be in touch mode. 3228 * @return True if the touch mode changed and focus changed was changed as a result 3229 */ 3230 boolean ensureTouchMode(boolean inTouchMode) { 3231 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3232 + "touch mode is " + mAttachInfo.mInTouchMode); 3233 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3234 3235 // tell the window manager 3236 try { 3237 mWindowSession.setInTouchMode(inTouchMode); 3238 } catch (RemoteException e) { 3239 throw new RuntimeException(e); 3240 } 3241 3242 // handle the change 3243 return ensureTouchModeLocally(inTouchMode); 3244 } 3245 3246 /** 3247 * Ensure that the touch mode for this window is set, and if it is changing, 3248 * take the appropriate action. 3249 * @param inTouchMode Whether we want to be in touch mode. 3250 * @return True if the touch mode changed and focus changed was changed as a result 3251 */ 3252 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3253 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3254 + "touch mode is " + mAttachInfo.mInTouchMode); 3255 3256 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3257 3258 mAttachInfo.mInTouchMode = inTouchMode; 3259 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3260 3261 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3262 } 3263 3264 private boolean enterTouchMode() { 3265 if (mView != null) { 3266 if (mView.hasFocus()) { 3267 // note: not relying on mFocusedView here because this could 3268 // be when the window is first being added, and mFocused isn't 3269 // set yet. 3270 final View focused = mView.findFocus(); 3271 if (focused != null && !focused.isFocusableInTouchMode()) { 3272 final ViewGroup ancestorToTakeFocus = 3273 findAncestorToTakeFocusInTouchMode(focused); 3274 if (ancestorToTakeFocus != null) { 3275 // there is an ancestor that wants focus after its descendants that 3276 // is focusable in touch mode.. give it focus 3277 return ancestorToTakeFocus.requestFocus(); 3278 } else { 3279 // nothing appropriate to have focus in touch mode, clear it out 3280 focused.unFocus(); 3281 return true; 3282 } 3283 } 3284 } 3285 } 3286 return false; 3287 } 3288 3289 /** 3290 * Find an ancestor of focused that wants focus after its descendants and is 3291 * focusable in touch mode. 3292 * @param focused The currently focused view. 3293 * @return An appropriate view, or null if no such view exists. 3294 */ 3295 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3296 ViewParent parent = focused.getParent(); 3297 while (parent instanceof ViewGroup) { 3298 final ViewGroup vgParent = (ViewGroup) parent; 3299 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3300 && vgParent.isFocusableInTouchMode()) { 3301 return vgParent; 3302 } 3303 if (vgParent.isRootNamespace()) { 3304 return null; 3305 } else { 3306 parent = vgParent.getParent(); 3307 } 3308 } 3309 return null; 3310 } 3311 3312 private boolean leaveTouchMode() { 3313 if (mView != null) { 3314 if (mView.hasFocus()) { 3315 View focusedView = mView.findFocus(); 3316 if (!(focusedView instanceof ViewGroup)) { 3317 // some view has focus, let it keep it 3318 return false; 3319 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3320 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3321 // some view group has focus, and doesn't prefer its children 3322 // over itself for focus, so let them keep it. 3323 return false; 3324 } 3325 } 3326 3327 // find the best view to give focus to in this brave new non-touch-mode 3328 // world 3329 final View focused = focusSearch(null, View.FOCUS_DOWN); 3330 if (focused != null) { 3331 return focused.requestFocus(View.FOCUS_DOWN); 3332 } 3333 } 3334 return false; 3335 } 3336 3337 /** 3338 * Base class for implementing a stage in the chain of responsibility 3339 * for processing input events. 3340 * <p> 3341 * Events are delivered to the stage by the {@link #deliver} method. The stage 3342 * then has the choice of finishing the event or forwarding it to the next stage. 3343 * </p> 3344 */ 3345 abstract class InputStage { 3346 private final InputStage mNext; 3347 3348 protected static final int FORWARD = 0; 3349 protected static final int FINISH_HANDLED = 1; 3350 protected static final int FINISH_NOT_HANDLED = 2; 3351 3352 /** 3353 * Creates an input stage. 3354 * @param next The next stage to which events should be forwarded. 3355 */ 3356 public InputStage(InputStage next) { 3357 mNext = next; 3358 } 3359 3360 /** 3361 * Delivers an event to be processed. 3362 */ 3363 public final void deliver(QueuedInputEvent q) { 3364 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3365 forward(q); 3366 } else if (mView == null || !mAdded) { 3367 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3368 finish(q, false); 3369 } else if (!mAttachInfo.mHasWindowFocus && 3370 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3371 !isTerminalInputEvent(q.mEvent)) { 3372 // If this is a focused event and the window doesn't currently have input focus, 3373 // then drop this event. This could be an event that came back from the previous 3374 // stage but the window has lost focus in the meantime. 3375 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3376 finish(q, false); 3377 } else { 3378 apply(q, onProcess(q)); 3379 } 3380 } 3381 3382 /** 3383 * Marks the the input event as finished then forwards it to the next stage. 3384 */ 3385 protected void finish(QueuedInputEvent q, boolean handled) { 3386 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3387 if (handled) { 3388 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3389 } 3390 forward(q); 3391 } 3392 3393 /** 3394 * Forwards the event to the next stage. 3395 */ 3396 protected void forward(QueuedInputEvent q) { 3397 onDeliverToNext(q); 3398 } 3399 3400 /** 3401 * Applies a result code from {@link #onProcess} to the specified event. 3402 */ 3403 protected void apply(QueuedInputEvent q, int result) { 3404 if (result == FORWARD) { 3405 forward(q); 3406 } else if (result == FINISH_HANDLED) { 3407 finish(q, true); 3408 } else if (result == FINISH_NOT_HANDLED) { 3409 finish(q, false); 3410 } else { 3411 throw new IllegalArgumentException("Invalid result: " + result); 3412 } 3413 } 3414 3415 /** 3416 * Called when an event is ready to be processed. 3417 * @return A result code indicating how the event was handled. 3418 */ 3419 protected int onProcess(QueuedInputEvent q) { 3420 return FORWARD; 3421 } 3422 3423 /** 3424 * Called when an event is being delivered to the next stage. 3425 */ 3426 protected void onDeliverToNext(QueuedInputEvent q) { 3427 if (mNext != null) { 3428 mNext.deliver(q); 3429 } else { 3430 finishInputEvent(q); 3431 } 3432 } 3433 } 3434 3435 /** 3436 * Base class for implementing an input pipeline stage that supports 3437 * asynchronous and out-of-order processing of input events. 3438 * <p> 3439 * In addition to what a normal input stage can do, an asynchronous 3440 * input stage may also defer an input event that has been delivered to it 3441 * and finish or forward it later. 3442 * </p> 3443 */ 3444 abstract class AsyncInputStage extends InputStage { 3445 private final String mTraceCounter; 3446 3447 private QueuedInputEvent mQueueHead; 3448 private QueuedInputEvent mQueueTail; 3449 private int mQueueLength; 3450 3451 protected static final int DEFER = 3; 3452 3453 /** 3454 * Creates an asynchronous input stage. 3455 * @param next The next stage to which events should be forwarded. 3456 * @param traceCounter The name of a counter to record the size of 3457 * the queue of pending events. 3458 */ 3459 public AsyncInputStage(InputStage next, String traceCounter) { 3460 super(next); 3461 mTraceCounter = traceCounter; 3462 } 3463 3464 /** 3465 * Marks the event as deferred, which is to say that it will be handled 3466 * asynchronously. The caller is responsible for calling {@link #forward} 3467 * or {@link #finish} later when it is done handling the event. 3468 */ 3469 protected void defer(QueuedInputEvent q) { 3470 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3471 enqueue(q); 3472 } 3473 3474 @Override 3475 protected void forward(QueuedInputEvent q) { 3476 // Clear the deferred flag. 3477 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3478 3479 // Fast path if the queue is empty. 3480 QueuedInputEvent curr = mQueueHead; 3481 if (curr == null) { 3482 super.forward(q); 3483 return; 3484 } 3485 3486 // Determine whether the event must be serialized behind any others 3487 // before it can be delivered to the next stage. This is done because 3488 // deferred events might be handled out of order by the stage. 3489 final int deviceId = q.mEvent.getDeviceId(); 3490 QueuedInputEvent prev = null; 3491 boolean blocked = false; 3492 while (curr != null && curr != q) { 3493 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3494 blocked = true; 3495 } 3496 prev = curr; 3497 curr = curr.mNext; 3498 } 3499 3500 // If the event is blocked, then leave it in the queue to be delivered later. 3501 // Note that the event might not yet be in the queue if it was not previously 3502 // deferred so we will enqueue it if needed. 3503 if (blocked) { 3504 if (curr == null) { 3505 enqueue(q); 3506 } 3507 return; 3508 } 3509 3510 // The event is not blocked. Deliver it immediately. 3511 if (curr != null) { 3512 curr = curr.mNext; 3513 dequeue(q, prev); 3514 } 3515 super.forward(q); 3516 3517 // Dequeuing this event may have unblocked successors. Deliver them. 3518 while (curr != null) { 3519 if (deviceId == curr.mEvent.getDeviceId()) { 3520 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3521 break; 3522 } 3523 QueuedInputEvent next = curr.mNext; 3524 dequeue(curr, prev); 3525 super.forward(curr); 3526 curr = next; 3527 } else { 3528 prev = curr; 3529 curr = curr.mNext; 3530 } 3531 } 3532 } 3533 3534 @Override 3535 protected void apply(QueuedInputEvent q, int result) { 3536 if (result == DEFER) { 3537 defer(q); 3538 } else { 3539 super.apply(q, result); 3540 } 3541 } 3542 3543 private void enqueue(QueuedInputEvent q) { 3544 if (mQueueTail == null) { 3545 mQueueHead = q; 3546 mQueueTail = q; 3547 } else { 3548 mQueueTail.mNext = q; 3549 mQueueTail = q; 3550 } 3551 3552 mQueueLength += 1; 3553 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3554 } 3555 3556 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3557 if (prev == null) { 3558 mQueueHead = q.mNext; 3559 } else { 3560 prev.mNext = q.mNext; 3561 } 3562 if (mQueueTail == q) { 3563 mQueueTail = prev; 3564 } 3565 q.mNext = null; 3566 3567 mQueueLength -= 1; 3568 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3569 } 3570 } 3571 3572 /** 3573 * Delivers pre-ime input events to a native activity. 3574 * Does not support pointer events. 3575 */ 3576 final class NativePreImeInputStage extends AsyncInputStage 3577 implements InputQueue.FinishedInputEventCallback { 3578 public NativePreImeInputStage(InputStage next, String traceCounter) { 3579 super(next, traceCounter); 3580 } 3581 3582 @Override 3583 protected int onProcess(QueuedInputEvent q) { 3584 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3585 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3586 return DEFER; 3587 } 3588 return FORWARD; 3589 } 3590 3591 @Override 3592 public void onFinishedInputEvent(Object token, boolean handled) { 3593 QueuedInputEvent q = (QueuedInputEvent)token; 3594 if (handled) { 3595 finish(q, true); 3596 return; 3597 } 3598 forward(q); 3599 } 3600 } 3601 3602 /** 3603 * Delivers pre-ime input events to the view hierarchy. 3604 * Does not support pointer events. 3605 */ 3606 final class ViewPreImeInputStage extends InputStage { 3607 public ViewPreImeInputStage(InputStage next) { 3608 super(next); 3609 } 3610 3611 @Override 3612 protected int onProcess(QueuedInputEvent q) { 3613 if (q.mEvent instanceof KeyEvent) { 3614 return processKeyEvent(q); 3615 } 3616 return FORWARD; 3617 } 3618 3619 private int processKeyEvent(QueuedInputEvent q) { 3620 final KeyEvent event = (KeyEvent)q.mEvent; 3621 if (mView.dispatchKeyEventPreIme(event)) { 3622 return FINISH_HANDLED; 3623 } 3624 return FORWARD; 3625 } 3626 } 3627 3628 /** 3629 * Delivers input events to the ime. 3630 * Does not support pointer events. 3631 */ 3632 final class ImeInputStage extends AsyncInputStage 3633 implements InputMethodManager.FinishedInputEventCallback { 3634 public ImeInputStage(InputStage next, String traceCounter) { 3635 super(next, traceCounter); 3636 } 3637 3638 @Override 3639 protected int onProcess(QueuedInputEvent q) { 3640 if (mLastWasImTarget) { 3641 InputMethodManager imm = InputMethodManager.peekInstance(); 3642 if (imm != null) { 3643 final InputEvent event = q.mEvent; 3644 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3645 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3646 if (result == InputMethodManager.DISPATCH_HANDLED) { 3647 return FINISH_HANDLED; 3648 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3649 return FINISH_NOT_HANDLED; 3650 } else { 3651 return DEFER; // callback will be invoked later 3652 } 3653 } 3654 } 3655 return FORWARD; 3656 } 3657 3658 @Override 3659 public void onFinishedInputEvent(Object token, boolean handled) { 3660 QueuedInputEvent q = (QueuedInputEvent)token; 3661 if (handled) { 3662 finish(q, true); 3663 return; 3664 } 3665 forward(q); 3666 } 3667 } 3668 3669 /** 3670 * Performs early processing of post-ime input events. 3671 */ 3672 final class EarlyPostImeInputStage extends InputStage { 3673 public EarlyPostImeInputStage(InputStage next) { 3674 super(next); 3675 } 3676 3677 @Override 3678 protected int onProcess(QueuedInputEvent q) { 3679 if (q.mEvent instanceof KeyEvent) { 3680 return processKeyEvent(q); 3681 } else { 3682 final int source = q.mEvent.getSource(); 3683 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3684 return processPointerEvent(q); 3685 } 3686 } 3687 return FORWARD; 3688 } 3689 3690 private int processKeyEvent(QueuedInputEvent q) { 3691 final KeyEvent event = (KeyEvent)q.mEvent; 3692 3693 // If the key's purpose is to exit touch mode then we consume it 3694 // and consider it handled. 3695 if (checkForLeavingTouchModeAndConsume(event)) { 3696 return FINISH_HANDLED; 3697 } 3698 3699 // Make sure the fallback event policy sees all keys that will be 3700 // delivered to the view hierarchy. 3701 mFallbackEventHandler.preDispatchKeyEvent(event); 3702 return FORWARD; 3703 } 3704 3705 private int processPointerEvent(QueuedInputEvent q) { 3706 final MotionEvent event = (MotionEvent)q.mEvent; 3707 3708 // Translate the pointer event for compatibility, if needed. 3709 if (mTranslator != null) { 3710 mTranslator.translateEventInScreenToAppWindow(event); 3711 } 3712 3713 // Enter touch mode on down or scroll. 3714 final int action = event.getAction(); 3715 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3716 ensureTouchMode(true); 3717 } 3718 3719 // Offset the scroll position. 3720 if (mCurScrollY != 0) { 3721 event.offsetLocation(0, mCurScrollY); 3722 } 3723 3724 // Remember the touch position for possible drag-initiation. 3725 if (event.isTouchEvent()) { 3726 mLastTouchPoint.x = event.getRawX(); 3727 mLastTouchPoint.y = event.getRawY(); 3728 } 3729 return FORWARD; 3730 } 3731 } 3732 3733 /** 3734 * Delivers post-ime input events to a native activity. 3735 */ 3736 final class NativePostImeInputStage extends AsyncInputStage 3737 implements InputQueue.FinishedInputEventCallback { 3738 public NativePostImeInputStage(InputStage next, String traceCounter) { 3739 super(next, traceCounter); 3740 } 3741 3742 @Override 3743 protected int onProcess(QueuedInputEvent q) { 3744 if (mInputQueue != null) { 3745 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3746 return DEFER; 3747 } 3748 return FORWARD; 3749 } 3750 3751 @Override 3752 public void onFinishedInputEvent(Object token, boolean handled) { 3753 QueuedInputEvent q = (QueuedInputEvent)token; 3754 if (handled) { 3755 finish(q, true); 3756 return; 3757 } 3758 forward(q); 3759 } 3760 } 3761 3762 /** 3763 * Delivers post-ime input events to the view hierarchy. 3764 */ 3765 final class ViewPostImeInputStage extends InputStage { 3766 public ViewPostImeInputStage(InputStage next) { 3767 super(next); 3768 } 3769 3770 @Override 3771 protected int onProcess(QueuedInputEvent q) { 3772 if (q.mEvent instanceof KeyEvent) { 3773 return processKeyEvent(q); 3774 } else { 3775 final int source = q.mEvent.getSource(); 3776 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3777 return processPointerEvent(q); 3778 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3779 return processTrackballEvent(q); 3780 } else { 3781 return processGenericMotionEvent(q); 3782 } 3783 } 3784 } 3785 3786 private int processKeyEvent(QueuedInputEvent q) { 3787 final KeyEvent event = (KeyEvent)q.mEvent; 3788 3789 // Deliver the key to the view hierarchy. 3790 if (mView.dispatchKeyEvent(event)) { 3791 return FINISH_HANDLED; 3792 } 3793 3794 // If the Control modifier is held, try to interpret the key as a shortcut. 3795 if (event.getAction() == KeyEvent.ACTION_DOWN 3796 && event.isCtrlPressed() 3797 && event.getRepeatCount() == 0 3798 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3799 if (mView.dispatchKeyShortcutEvent(event)) { 3800 return FINISH_HANDLED; 3801 } 3802 } 3803 3804 // Apply the fallback event policy. 3805 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3806 return FINISH_HANDLED; 3807 } 3808 3809 // Handle automatic focus changes. 3810 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3811 int direction = 0; 3812 switch (event.getKeyCode()) { 3813 case KeyEvent.KEYCODE_DPAD_LEFT: 3814 if (event.hasNoModifiers()) { 3815 direction = View.FOCUS_LEFT; 3816 } 3817 break; 3818 case KeyEvent.KEYCODE_DPAD_RIGHT: 3819 if (event.hasNoModifiers()) { 3820 direction = View.FOCUS_RIGHT; 3821 } 3822 break; 3823 case KeyEvent.KEYCODE_DPAD_UP: 3824 if (event.hasNoModifiers()) { 3825 direction = View.FOCUS_UP; 3826 } 3827 break; 3828 case KeyEvent.KEYCODE_DPAD_DOWN: 3829 if (event.hasNoModifiers()) { 3830 direction = View.FOCUS_DOWN; 3831 } 3832 break; 3833 case KeyEvent.KEYCODE_TAB: 3834 if (event.hasNoModifiers()) { 3835 direction = View.FOCUS_FORWARD; 3836 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3837 direction = View.FOCUS_BACKWARD; 3838 } 3839 break; 3840 } 3841 if (direction != 0) { 3842 View focused = mView.findFocus(); 3843 if (focused != null) { 3844 View v = focused.focusSearch(direction); 3845 if (v != null && v != focused) { 3846 // do the math the get the interesting rect 3847 // of previous focused into the coord system of 3848 // newly focused view 3849 focused.getFocusedRect(mTempRect); 3850 if (mView instanceof ViewGroup) { 3851 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3852 focused, mTempRect); 3853 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3854 v, mTempRect); 3855 } 3856 if (v.requestFocus(direction, mTempRect)) { 3857 playSoundEffect(SoundEffectConstants 3858 .getContantForFocusDirection(direction)); 3859 return FINISH_HANDLED; 3860 } 3861 } 3862 3863 // Give the focused view a last chance to handle the dpad key. 3864 if (mView.dispatchUnhandledMove(focused, direction)) { 3865 return FINISH_HANDLED; 3866 } 3867 } else { 3868 // find the best view to give focus to in this non-touch-mode with no-focus 3869 View v = focusSearch(null, direction); 3870 if (v != null && v.requestFocus(direction)) { 3871 return FINISH_HANDLED; 3872 } 3873 } 3874 } 3875 } 3876 return FORWARD; 3877 } 3878 3879 private int processPointerEvent(QueuedInputEvent q) { 3880 final MotionEvent event = (MotionEvent)q.mEvent; 3881 3882 if (mView.dispatchPointerEvent(event)) { 3883 return FINISH_HANDLED; 3884 } 3885 return FORWARD; 3886 } 3887 3888 private int processTrackballEvent(QueuedInputEvent q) { 3889 final MotionEvent event = (MotionEvent)q.mEvent; 3890 3891 if (mView.dispatchTrackballEvent(event)) { 3892 return FINISH_HANDLED; 3893 } 3894 return FORWARD; 3895 } 3896 3897 private int processGenericMotionEvent(QueuedInputEvent q) { 3898 final MotionEvent event = (MotionEvent)q.mEvent; 3899 3900 // Deliver the event to the view. 3901 if (mView.dispatchGenericMotionEvent(event)) { 3902 return FINISH_HANDLED; 3903 } 3904 return FORWARD; 3905 } 3906 } 3907 3908 /** 3909 * Performs synthesis of new input events from unhandled input events. 3910 */ 3911 final class SyntheticInputStage extends InputStage { 3912 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3913 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3914 private final SyntheticTouchNavigationHandler mTouchNavigation = 3915 new SyntheticTouchNavigationHandler(); 3916 3917 public SyntheticInputStage() { 3918 super(null); 3919 } 3920 3921 @Override 3922 protected int onProcess(QueuedInputEvent q) { 3923 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3924 if (q.mEvent instanceof MotionEvent) { 3925 final MotionEvent event = (MotionEvent)q.mEvent; 3926 final int source = event.getSource(); 3927 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3928 mTrackball.process(event); 3929 return FINISH_HANDLED; 3930 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3931 mJoystick.process(event); 3932 return FINISH_HANDLED; 3933 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3934 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3935 mTouchNavigation.process(event); 3936 return FINISH_HANDLED; 3937 } 3938 } 3939 return FORWARD; 3940 } 3941 3942 @Override 3943 protected void onDeliverToNext(QueuedInputEvent q) { 3944 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 3945 // Cancel related synthetic events if any prior stage has handled the event. 3946 if (q.mEvent instanceof MotionEvent) { 3947 final MotionEvent event = (MotionEvent)q.mEvent; 3948 final int source = event.getSource(); 3949 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3950 mTrackball.cancel(event); 3951 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3952 mJoystick.cancel(event); 3953 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3954 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3955 mTouchNavigation.cancel(event); 3956 } 3957 } 3958 } 3959 super.onDeliverToNext(q); 3960 } 3961 } 3962 3963 /** 3964 * Creates dpad events from unhandled trackball movements. 3965 */ 3966 final class SyntheticTrackballHandler { 3967 private final TrackballAxis mX = new TrackballAxis(); 3968 private final TrackballAxis mY = new TrackballAxis(); 3969 private long mLastTime; 3970 3971 public void process(MotionEvent event) { 3972 // Translate the trackball event into DPAD keys and try to deliver those. 3973 long curTime = SystemClock.uptimeMillis(); 3974 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 3975 // It has been too long since the last movement, 3976 // so restart at the beginning. 3977 mX.reset(0); 3978 mY.reset(0); 3979 mLastTime = curTime; 3980 } 3981 3982 final int action = event.getAction(); 3983 final int metaState = event.getMetaState(); 3984 switch (action) { 3985 case MotionEvent.ACTION_DOWN: 3986 mX.reset(2); 3987 mY.reset(2); 3988 enqueueInputEvent(new KeyEvent(curTime, curTime, 3989 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3990 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3991 InputDevice.SOURCE_KEYBOARD)); 3992 break; 3993 case MotionEvent.ACTION_UP: 3994 mX.reset(2); 3995 mY.reset(2); 3996 enqueueInputEvent(new KeyEvent(curTime, curTime, 3997 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3998 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3999 InputDevice.SOURCE_KEYBOARD)); 4000 break; 4001 } 4002 4003 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4004 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4005 + " move=" + event.getX() 4006 + " / Y=" + mY.position + " step=" 4007 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4008 + " move=" + event.getY()); 4009 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4010 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4011 4012 // Generate DPAD events based on the trackball movement. 4013 // We pick the axis that has moved the most as the direction of 4014 // the DPAD. When we generate DPAD events for one axis, then the 4015 // other axis is reset -- we don't want to perform DPAD jumps due 4016 // to slight movements in the trackball when making major movements 4017 // along the other axis. 4018 int keycode = 0; 4019 int movement = 0; 4020 float accel = 1; 4021 if (xOff > yOff) { 4022 movement = mX.generate(); 4023 if (movement != 0) { 4024 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4025 : KeyEvent.KEYCODE_DPAD_LEFT; 4026 accel = mX.acceleration; 4027 mY.reset(2); 4028 } 4029 } else if (yOff > 0) { 4030 movement = mY.generate(); 4031 if (movement != 0) { 4032 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4033 : KeyEvent.KEYCODE_DPAD_UP; 4034 accel = mY.acceleration; 4035 mX.reset(2); 4036 } 4037 } 4038 4039 if (keycode != 0) { 4040 if (movement < 0) movement = -movement; 4041 int accelMovement = (int)(movement * accel); 4042 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4043 + " accelMovement=" + accelMovement 4044 + " accel=" + accel); 4045 if (accelMovement > movement) { 4046 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4047 + keycode); 4048 movement--; 4049 int repeatCount = accelMovement - movement; 4050 enqueueInputEvent(new KeyEvent(curTime, curTime, 4051 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4052 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4053 InputDevice.SOURCE_KEYBOARD)); 4054 } 4055 while (movement > 0) { 4056 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4057 + keycode); 4058 movement--; 4059 curTime = SystemClock.uptimeMillis(); 4060 enqueueInputEvent(new KeyEvent(curTime, curTime, 4061 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4062 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4063 InputDevice.SOURCE_KEYBOARD)); 4064 enqueueInputEvent(new KeyEvent(curTime, curTime, 4065 KeyEvent.ACTION_UP, keycode, 0, metaState, 4066 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4067 InputDevice.SOURCE_KEYBOARD)); 4068 } 4069 mLastTime = curTime; 4070 } 4071 } 4072 4073 public void cancel(MotionEvent event) { 4074 mLastTime = Integer.MIN_VALUE; 4075 4076 // If we reach this, we consumed a trackball event. 4077 // Because we will not translate the trackball event into a key event, 4078 // touch mode will not exit, so we exit touch mode here. 4079 if (mView != null && mAdded) { 4080 ensureTouchMode(false); 4081 } 4082 } 4083 } 4084 4085 /** 4086 * Maintains state information for a single trackball axis, generating 4087 * discrete (DPAD) movements based on raw trackball motion. 4088 */ 4089 static final class TrackballAxis { 4090 /** 4091 * The maximum amount of acceleration we will apply. 4092 */ 4093 static final float MAX_ACCELERATION = 20; 4094 4095 /** 4096 * The maximum amount of time (in milliseconds) between events in order 4097 * for us to consider the user to be doing fast trackball movements, 4098 * and thus apply an acceleration. 4099 */ 4100 static final long FAST_MOVE_TIME = 150; 4101 4102 /** 4103 * Scaling factor to the time (in milliseconds) between events to how 4104 * much to multiple/divide the current acceleration. When movement 4105 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4106 * FAST_MOVE_TIME it divides it. 4107 */ 4108 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4109 4110 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4111 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4112 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4113 4114 float position; 4115 float acceleration = 1; 4116 long lastMoveTime = 0; 4117 int step; 4118 int dir; 4119 int nonAccelMovement; 4120 4121 void reset(int _step) { 4122 position = 0; 4123 acceleration = 1; 4124 lastMoveTime = 0; 4125 step = _step; 4126 dir = 0; 4127 } 4128 4129 /** 4130 * Add trackball movement into the state. If the direction of movement 4131 * has been reversed, the state is reset before adding the 4132 * movement (so that you don't have to compensate for any previously 4133 * collected movement before see the result of the movement in the 4134 * new direction). 4135 * 4136 * @return Returns the absolute value of the amount of movement 4137 * collected so far. 4138 */ 4139 float collect(float off, long time, String axis) { 4140 long normTime; 4141 if (off > 0) { 4142 normTime = (long)(off * FAST_MOVE_TIME); 4143 if (dir < 0) { 4144 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4145 position = 0; 4146 step = 0; 4147 acceleration = 1; 4148 lastMoveTime = 0; 4149 } 4150 dir = 1; 4151 } else if (off < 0) { 4152 normTime = (long)((-off) * FAST_MOVE_TIME); 4153 if (dir > 0) { 4154 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4155 position = 0; 4156 step = 0; 4157 acceleration = 1; 4158 lastMoveTime = 0; 4159 } 4160 dir = -1; 4161 } else { 4162 normTime = 0; 4163 } 4164 4165 // The number of milliseconds between each movement that is 4166 // considered "normal" and will not result in any acceleration 4167 // or deceleration, scaled by the offset we have here. 4168 if (normTime > 0) { 4169 long delta = time - lastMoveTime; 4170 lastMoveTime = time; 4171 float acc = acceleration; 4172 if (delta < normTime) { 4173 // The user is scrolling rapidly, so increase acceleration. 4174 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4175 if (scale > 1) acc *= scale; 4176 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4177 + off + " normTime=" + normTime + " delta=" + delta 4178 + " scale=" + scale + " acc=" + acc); 4179 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4180 } else { 4181 // The user is scrolling slowly, so decrease acceleration. 4182 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4183 if (scale > 1) acc /= scale; 4184 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4185 + off + " normTime=" + normTime + " delta=" + delta 4186 + " scale=" + scale + " acc=" + acc); 4187 acceleration = acc > 1 ? acc : 1; 4188 } 4189 } 4190 position += off; 4191 return Math.abs(position); 4192 } 4193 4194 /** 4195 * Generate the number of discrete movement events appropriate for 4196 * the currently collected trackball movement. 4197 * 4198 * @return Returns the number of discrete movements, either positive 4199 * or negative, or 0 if there is not enough trackball movement yet 4200 * for a discrete movement. 4201 */ 4202 int generate() { 4203 int movement = 0; 4204 nonAccelMovement = 0; 4205 do { 4206 final int dir = position >= 0 ? 1 : -1; 4207 switch (step) { 4208 // If we are going to execute the first step, then we want 4209 // to do this as soon as possible instead of waiting for 4210 // a full movement, in order to make things look responsive. 4211 case 0: 4212 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4213 return movement; 4214 } 4215 movement += dir; 4216 nonAccelMovement += dir; 4217 step = 1; 4218 break; 4219 // If we have generated the first movement, then we need 4220 // to wait for the second complete trackball motion before 4221 // generating the second discrete movement. 4222 case 1: 4223 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4224 return movement; 4225 } 4226 movement += dir; 4227 nonAccelMovement += dir; 4228 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4229 step = 2; 4230 break; 4231 // After the first two, we generate discrete movements 4232 // consistently with the trackball, applying an acceleration 4233 // if the trackball is moving quickly. This is a simple 4234 // acceleration on top of what we already compute based 4235 // on how quickly the wheel is being turned, to apply 4236 // a longer increasing acceleration to continuous movement 4237 // in one direction. 4238 default: 4239 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4240 return movement; 4241 } 4242 movement += dir; 4243 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4244 float acc = acceleration; 4245 acc *= 1.1f; 4246 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4247 break; 4248 } 4249 } while (true); 4250 } 4251 } 4252 4253 /** 4254 * Creates dpad events from unhandled joystick movements. 4255 */ 4256 final class SyntheticJoystickHandler extends Handler { 4257 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4258 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4259 4260 private int mLastXDirection; 4261 private int mLastYDirection; 4262 private int mLastXKeyCode; 4263 private int mLastYKeyCode; 4264 4265 public SyntheticJoystickHandler() { 4266 super(true); 4267 } 4268 4269 @Override 4270 public void handleMessage(Message msg) { 4271 switch (msg.what) { 4272 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4273 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4274 KeyEvent oldEvent = (KeyEvent)msg.obj; 4275 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4276 SystemClock.uptimeMillis(), 4277 oldEvent.getRepeatCount() + 1); 4278 if (mAttachInfo.mHasWindowFocus) { 4279 enqueueInputEvent(e); 4280 Message m = obtainMessage(msg.what, e); 4281 m.setAsynchronous(true); 4282 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4283 } 4284 } break; 4285 } 4286 } 4287 4288 public void process(MotionEvent event) { 4289 update(event, true); 4290 } 4291 4292 public void cancel(MotionEvent event) { 4293 update(event, false); 4294 } 4295 4296 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4297 final long time = event.getEventTime(); 4298 final int metaState = event.getMetaState(); 4299 final int deviceId = event.getDeviceId(); 4300 final int source = event.getSource(); 4301 4302 int xDirection = joystickAxisValueToDirection( 4303 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4304 if (xDirection == 0) { 4305 xDirection = joystickAxisValueToDirection(event.getX()); 4306 } 4307 4308 int yDirection = joystickAxisValueToDirection( 4309 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4310 if (yDirection == 0) { 4311 yDirection = joystickAxisValueToDirection(event.getY()); 4312 } 4313 4314 if (xDirection != mLastXDirection) { 4315 if (mLastXKeyCode != 0) { 4316 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4317 enqueueInputEvent(new KeyEvent(time, time, 4318 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4319 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4320 mLastXKeyCode = 0; 4321 } 4322 4323 mLastXDirection = xDirection; 4324 4325 if (xDirection != 0 && synthesizeNewKeys) { 4326 mLastXKeyCode = xDirection > 0 4327 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4328 final KeyEvent e = new KeyEvent(time, time, 4329 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4330 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4331 enqueueInputEvent(e); 4332 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4333 m.setAsynchronous(true); 4334 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4335 } 4336 } 4337 4338 if (yDirection != mLastYDirection) { 4339 if (mLastYKeyCode != 0) { 4340 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4341 enqueueInputEvent(new KeyEvent(time, time, 4342 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4343 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4344 mLastYKeyCode = 0; 4345 } 4346 4347 mLastYDirection = yDirection; 4348 4349 if (yDirection != 0 && synthesizeNewKeys) { 4350 mLastYKeyCode = yDirection > 0 4351 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4352 final KeyEvent e = new KeyEvent(time, time, 4353 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4354 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4355 enqueueInputEvent(e); 4356 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4357 m.setAsynchronous(true); 4358 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4359 } 4360 } 4361 } 4362 4363 private int joystickAxisValueToDirection(float value) { 4364 if (value >= 0.5f) { 4365 return 1; 4366 } else if (value <= -0.5f) { 4367 return -1; 4368 } else { 4369 return 0; 4370 } 4371 } 4372 } 4373 4374 /** 4375 * Creates dpad events from unhandled touch navigation movements. 4376 */ 4377 final class SyntheticTouchNavigationHandler extends Handler { 4378 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4379 private static final boolean LOCAL_DEBUG = false; 4380 4381 // Assumed nominal width and height in millimeters of a touch navigation pad, 4382 // if no resolution information is available from the input system. 4383 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4384 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4385 4386 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4387 4388 // Tap timeout in milliseconds. 4389 private static final int TAP_TIMEOUT = 250; 4390 4391 // The maximum distance traveled for a gesture to be considered a tap in millimeters. 4392 private static final int TAP_SLOP_MILLIMETERS = 5; 4393 4394 // The nominal distance traveled to move by one unit. 4395 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4396 4397 // Minimum and maximum fling velocity in ticks per second. 4398 // The minimum velocity should be set such that we perform enough ticks per 4399 // second that the fling appears to be fluid. For example, if we set the minimum 4400 // to 2 ticks per second, then there may be up to half a second delay between the next 4401 // to last and last ticks which is noticeably discrete and jerky. This value should 4402 // probably not be set to anything less than about 4. 4403 // If fling accuracy is a problem then consider tuning the tick distance instead. 4404 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4405 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4406 4407 // Fling velocity decay factor applied after each new key is emitted. 4408 // This parameter controls the deceleration and overall duration of the fling. 4409 // The fling stops automatically when its velocity drops below the minimum 4410 // fling velocity defined above. 4411 private static final float FLING_TICK_DECAY = 0.8f; 4412 4413 /* The input device that we are tracking. */ 4414 4415 private int mCurrentDeviceId = -1; 4416 private int mCurrentSource; 4417 private boolean mCurrentDeviceSupported; 4418 4419 /* Configuration for the current input device. */ 4420 4421 // The tap timeout and scaled slop. 4422 private int mConfigTapTimeout; 4423 private float mConfigTapSlop; 4424 4425 // The scaled tick distance. A movement of this amount should generally translate 4426 // into a single dpad event in a given direction. 4427 private float mConfigTickDistance; 4428 4429 // The minimum and maximum scaled fling velocity. 4430 private float mConfigMinFlingVelocity; 4431 private float mConfigMaxFlingVelocity; 4432 4433 /* Tracking state. */ 4434 4435 // The velocity tracker for detecting flings. 4436 private VelocityTracker mVelocityTracker; 4437 4438 // The active pointer id, or -1 if none. 4439 private int mActivePointerId = -1; 4440 4441 // Time and location where tracking started. 4442 private long mStartTime; 4443 private float mStartX; 4444 private float mStartY; 4445 4446 // Most recently observed position. 4447 private float mLastX; 4448 private float mLastY; 4449 4450 // Accumulated movement delta since the last direction key was sent. 4451 private float mAccumulatedX; 4452 private float mAccumulatedY; 4453 4454 // Set to true if any movement was delivered to the app. 4455 // Implies that tap slop was exceeded. 4456 private boolean mConsumedMovement; 4457 4458 // The most recently sent key down event. 4459 // The keycode remains set until the direction changes or a fling ends 4460 // so that repeated key events may be generated as required. 4461 private long mPendingKeyDownTime; 4462 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4463 private int mPendingKeyRepeatCount; 4464 private int mPendingKeyMetaState; 4465 4466 // The current fling velocity while a fling is in progress. 4467 private boolean mFlinging; 4468 private float mFlingVelocity; 4469 4470 public SyntheticTouchNavigationHandler() { 4471 super(true); 4472 } 4473 4474 public void process(MotionEvent event) { 4475 // Update the current device information. 4476 final long time = event.getEventTime(); 4477 final int deviceId = event.getDeviceId(); 4478 final int source = event.getSource(); 4479 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4480 finishKeys(time); 4481 finishTracking(time); 4482 mCurrentDeviceId = deviceId; 4483 mCurrentSource = source; 4484 mCurrentDeviceSupported = false; 4485 InputDevice device = event.getDevice(); 4486 if (device != null) { 4487 // In order to support an input device, we must know certain 4488 // characteristics about it, such as its size and resolution. 4489 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4490 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4491 if (xRange != null && yRange != null) { 4492 mCurrentDeviceSupported = true; 4493 4494 // Infer the resolution if it not actually known. 4495 float xRes = xRange.getResolution(); 4496 if (xRes <= 0) { 4497 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4498 } 4499 float yRes = yRange.getResolution(); 4500 if (yRes <= 0) { 4501 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4502 } 4503 float nominalRes = (xRes + yRes) * 0.5f; 4504 4505 // Precompute all of the configuration thresholds we will need. 4506 mConfigTapTimeout = TAP_TIMEOUT; 4507 mConfigTapSlop = TAP_SLOP_MILLIMETERS * nominalRes; 4508 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4509 mConfigMinFlingVelocity = 4510 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4511 mConfigMaxFlingVelocity = 4512 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4513 4514 if (LOCAL_DEBUG) { 4515 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4516 + " (" + Integer.toHexString(mCurrentSource) + "): " 4517 + "mConfigTapTimeout=" + mConfigTapTimeout 4518 + ", mConfigTapSlop=" + mConfigTapSlop 4519 + ", mConfigTickDistance=" + mConfigTickDistance 4520 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4521 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4522 } 4523 } 4524 } 4525 } 4526 if (!mCurrentDeviceSupported) { 4527 return; 4528 } 4529 4530 // Handle the event. 4531 final int action = event.getActionMasked(); 4532 switch (action) { 4533 case MotionEvent.ACTION_DOWN: { 4534 boolean caughtFling = mFlinging; 4535 finishKeys(time); 4536 finishTracking(time); 4537 mActivePointerId = event.getPointerId(0); 4538 mVelocityTracker = VelocityTracker.obtain(); 4539 mVelocityTracker.addMovement(event); 4540 mStartTime = time; 4541 mStartX = event.getX(); 4542 mStartY = event.getY(); 4543 mLastX = mStartX; 4544 mLastY = mStartY; 4545 mAccumulatedX = 0; 4546 mAccumulatedY = 0; 4547 4548 // If we caught a fling, then pretend that the tap slop has already 4549 // been exceeded to suppress taps whose only purpose is to stop the fling. 4550 mConsumedMovement = caughtFling; 4551 break; 4552 } 4553 4554 case MotionEvent.ACTION_MOVE: 4555 case MotionEvent.ACTION_UP: { 4556 if (mActivePointerId < 0) { 4557 break; 4558 } 4559 final int index = event.findPointerIndex(mActivePointerId); 4560 if (index < 0) { 4561 finishKeys(time); 4562 finishTracking(time); 4563 break; 4564 } 4565 4566 mVelocityTracker.addMovement(event); 4567 final float x = event.getX(index); 4568 final float y = event.getY(index); 4569 mAccumulatedX += x - mLastX; 4570 mAccumulatedY += y - mLastY; 4571 mLastX = x; 4572 mLastY = y; 4573 4574 // Consume any accumulated movement so far. 4575 final int metaState = event.getMetaState(); 4576 consumeAccumulatedMovement(time, metaState); 4577 4578 // Detect taps and flings. 4579 if (action == MotionEvent.ACTION_UP) { 4580 if (!mConsumedMovement 4581 && Math.hypot(mLastX - mStartX, mLastY - mStartY) < mConfigTapSlop 4582 && time <= mStartTime + mConfigTapTimeout) { 4583 // It's a tap! 4584 finishKeys(time); 4585 sendKeyDownOrRepeat(time, KeyEvent.KEYCODE_DPAD_CENTER, metaState); 4586 sendKeyUp(time); 4587 } else if (mConsumedMovement 4588 && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4589 // It might be a fling. 4590 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4591 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4592 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4593 if (!startFling(time, vx, vy)) { 4594 finishKeys(time); 4595 } 4596 } 4597 finishTracking(time); 4598 } 4599 break; 4600 } 4601 4602 case MotionEvent.ACTION_CANCEL: { 4603 finishKeys(time); 4604 finishTracking(time); 4605 break; 4606 } 4607 } 4608 } 4609 4610 public void cancel(MotionEvent event) { 4611 if (mCurrentDeviceId == event.getDeviceId() 4612 && mCurrentSource == event.getSource()) { 4613 final long time = event.getEventTime(); 4614 finishKeys(time); 4615 finishTracking(time); 4616 } 4617 } 4618 4619 private void finishKeys(long time) { 4620 cancelFling(); 4621 sendKeyUp(time); 4622 } 4623 4624 private void finishTracking(long time) { 4625 if (mActivePointerId >= 0) { 4626 mActivePointerId = -1; 4627 mVelocityTracker.recycle(); 4628 mVelocityTracker = null; 4629 } 4630 } 4631 4632 private void consumeAccumulatedMovement(long time, int metaState) { 4633 final float absX = Math.abs(mAccumulatedX); 4634 final float absY = Math.abs(mAccumulatedY); 4635 if (absX >= absY) { 4636 if (absX >= mConfigTickDistance) { 4637 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4638 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4639 mAccumulatedY = 0; 4640 mConsumedMovement = true; 4641 } 4642 } else { 4643 if (absY >= mConfigTickDistance) { 4644 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4645 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4646 mAccumulatedX = 0; 4647 mConsumedMovement = true; 4648 } 4649 } 4650 } 4651 4652 private float consumeAccumulatedMovement(long time, int metaState, 4653 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4654 while (accumulator <= -mConfigTickDistance) { 4655 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4656 accumulator += mConfigTickDistance; 4657 } 4658 while (accumulator >= mConfigTickDistance) { 4659 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4660 accumulator -= mConfigTickDistance; 4661 } 4662 return accumulator; 4663 } 4664 4665 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4666 if (mPendingKeyCode != keyCode) { 4667 sendKeyUp(time); 4668 mPendingKeyDownTime = time; 4669 mPendingKeyCode = keyCode; 4670 mPendingKeyRepeatCount = 0; 4671 } else { 4672 mPendingKeyRepeatCount += 1; 4673 } 4674 mPendingKeyMetaState = metaState; 4675 4676 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4677 // but it doesn't quite make sense when simulating the events in this way. 4678 if (LOCAL_DEBUG) { 4679 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4680 + ", repeatCount=" + mPendingKeyRepeatCount 4681 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4682 } 4683 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4684 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4685 mPendingKeyMetaState, mCurrentDeviceId, 4686 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4687 } 4688 4689 private void sendKeyUp(long time) { 4690 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4691 if (LOCAL_DEBUG) { 4692 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4693 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4694 } 4695 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4696 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4697 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4698 mCurrentSource)); 4699 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4700 } 4701 } 4702 4703 private boolean startFling(long time, float vx, float vy) { 4704 if (LOCAL_DEBUG) { 4705 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4706 + ", min=" + mConfigMinFlingVelocity); 4707 } 4708 4709 // Flings must be oriented in the same direction as the preceding movements. 4710 switch (mPendingKeyCode) { 4711 case KeyEvent.KEYCODE_DPAD_LEFT: 4712 if (-vx >= mConfigMinFlingVelocity 4713 && Math.abs(vy) < mConfigMinFlingVelocity) { 4714 mFlingVelocity = -vx; 4715 break; 4716 } 4717 return false; 4718 4719 case KeyEvent.KEYCODE_DPAD_RIGHT: 4720 if (vx >= mConfigMinFlingVelocity 4721 && Math.abs(vy) < mConfigMinFlingVelocity) { 4722 mFlingVelocity = vx; 4723 break; 4724 } 4725 return false; 4726 4727 case KeyEvent.KEYCODE_DPAD_UP: 4728 if (-vy >= mConfigMinFlingVelocity 4729 && Math.abs(vx) < mConfigMinFlingVelocity) { 4730 mFlingVelocity = -vy; 4731 break; 4732 } 4733 return false; 4734 4735 case KeyEvent.KEYCODE_DPAD_DOWN: 4736 if (vy >= mConfigMinFlingVelocity 4737 && Math.abs(vx) < mConfigMinFlingVelocity) { 4738 mFlingVelocity = vy; 4739 break; 4740 } 4741 return false; 4742 } 4743 4744 // Post the first fling event. 4745 mFlinging = postFling(time); 4746 return mFlinging; 4747 } 4748 4749 private boolean postFling(long time) { 4750 // The idea here is to estimate the time when the pointer would have 4751 // traveled one tick distance unit given the current fling velocity. 4752 // This effect creates continuity of motion. 4753 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4754 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4755 postAtTime(mFlingRunnable, time + delay); 4756 if (LOCAL_DEBUG) { 4757 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4758 + mFlingVelocity + ", delay=" + delay 4759 + ", keyCode=" + mPendingKeyCode); 4760 } 4761 return true; 4762 } 4763 return false; 4764 } 4765 4766 private void cancelFling() { 4767 if (mFlinging) { 4768 removeCallbacks(mFlingRunnable); 4769 mFlinging = false; 4770 } 4771 } 4772 4773 private final Runnable mFlingRunnable = new Runnable() { 4774 @Override 4775 public void run() { 4776 final long time = SystemClock.uptimeMillis(); 4777 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4778 mFlingVelocity *= FLING_TICK_DECAY; 4779 if (!postFling(time)) { 4780 mFlinging = false; 4781 finishKeys(time); 4782 } 4783 } 4784 }; 4785 } 4786 4787 /** 4788 * Returns true if the key is used for keyboard navigation. 4789 * @param keyEvent The key event. 4790 * @return True if the key is used for keyboard navigation. 4791 */ 4792 private static boolean isNavigationKey(KeyEvent keyEvent) { 4793 switch (keyEvent.getKeyCode()) { 4794 case KeyEvent.KEYCODE_DPAD_LEFT: 4795 case KeyEvent.KEYCODE_DPAD_RIGHT: 4796 case KeyEvent.KEYCODE_DPAD_UP: 4797 case KeyEvent.KEYCODE_DPAD_DOWN: 4798 case KeyEvent.KEYCODE_DPAD_CENTER: 4799 case KeyEvent.KEYCODE_PAGE_UP: 4800 case KeyEvent.KEYCODE_PAGE_DOWN: 4801 case KeyEvent.KEYCODE_MOVE_HOME: 4802 case KeyEvent.KEYCODE_MOVE_END: 4803 case KeyEvent.KEYCODE_TAB: 4804 case KeyEvent.KEYCODE_SPACE: 4805 case KeyEvent.KEYCODE_ENTER: 4806 return true; 4807 } 4808 return false; 4809 } 4810 4811 /** 4812 * Returns true if the key is used for typing. 4813 * @param keyEvent The key event. 4814 * @return True if the key is used for typing. 4815 */ 4816 private static boolean isTypingKey(KeyEvent keyEvent) { 4817 return keyEvent.getUnicodeChar() > 0; 4818 } 4819 4820 /** 4821 * See if the key event means we should leave touch mode (and leave touch mode if so). 4822 * @param event The key event. 4823 * @return Whether this key event should be consumed (meaning the act of 4824 * leaving touch mode alone is considered the event). 4825 */ 4826 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4827 // Only relevant in touch mode. 4828 if (!mAttachInfo.mInTouchMode) { 4829 return false; 4830 } 4831 4832 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4833 final int action = event.getAction(); 4834 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4835 return false; 4836 } 4837 4838 // Don't leave touch mode if the IME told us not to. 4839 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4840 return false; 4841 } 4842 4843 // If the key can be used for keyboard navigation then leave touch mode 4844 // and select a focused view if needed (in ensureTouchMode). 4845 // When a new focused view is selected, we consume the navigation key because 4846 // navigation doesn't make much sense unless a view already has focus so 4847 // the key's purpose is to set focus. 4848 if (isNavigationKey(event)) { 4849 return ensureTouchMode(false); 4850 } 4851 4852 // If the key can be used for typing then leave touch mode 4853 // and select a focused view if needed (in ensureTouchMode). 4854 // Always allow the view to process the typing key. 4855 if (isTypingKey(event)) { 4856 ensureTouchMode(false); 4857 return false; 4858 } 4859 4860 return false; 4861 } 4862 4863 /* drag/drop */ 4864 void setLocalDragState(Object obj) { 4865 mLocalDragState = obj; 4866 } 4867 4868 private void handleDragEvent(DragEvent event) { 4869 // From the root, only drag start/end/location are dispatched. entered/exited 4870 // are determined and dispatched by the viewgroup hierarchy, who then report 4871 // that back here for ultimate reporting back to the framework. 4872 if (mView != null && mAdded) { 4873 final int what = event.mAction; 4874 4875 if (what == DragEvent.ACTION_DRAG_EXITED) { 4876 // A direct EXITED event means that the window manager knows we've just crossed 4877 // a window boundary, so the current drag target within this one must have 4878 // just been exited. Send it the usual notifications and then we're done 4879 // for now. 4880 mView.dispatchDragEvent(event); 4881 } else { 4882 // Cache the drag description when the operation starts, then fill it in 4883 // on subsequent calls as a convenience 4884 if (what == DragEvent.ACTION_DRAG_STARTED) { 4885 mCurrentDragView = null; // Start the current-recipient tracking 4886 mDragDescription = event.mClipDescription; 4887 } else { 4888 event.mClipDescription = mDragDescription; 4889 } 4890 4891 // For events with a [screen] location, translate into window coordinates 4892 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4893 mDragPoint.set(event.mX, event.mY); 4894 if (mTranslator != null) { 4895 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4896 } 4897 4898 if (mCurScrollY != 0) { 4899 mDragPoint.offset(0, mCurScrollY); 4900 } 4901 4902 event.mX = mDragPoint.x; 4903 event.mY = mDragPoint.y; 4904 } 4905 4906 // Remember who the current drag target is pre-dispatch 4907 final View prevDragView = mCurrentDragView; 4908 4909 // Now dispatch the drag/drop event 4910 boolean result = mView.dispatchDragEvent(event); 4911 4912 // If we changed apparent drag target, tell the OS about it 4913 if (prevDragView != mCurrentDragView) { 4914 try { 4915 if (prevDragView != null) { 4916 mWindowSession.dragRecipientExited(mWindow); 4917 } 4918 if (mCurrentDragView != null) { 4919 mWindowSession.dragRecipientEntered(mWindow); 4920 } 4921 } catch (RemoteException e) { 4922 Slog.e(TAG, "Unable to note drag target change"); 4923 } 4924 } 4925 4926 // Report the drop result when we're done 4927 if (what == DragEvent.ACTION_DROP) { 4928 mDragDescription = null; 4929 try { 4930 Log.i(TAG, "Reporting drop result: " + result); 4931 mWindowSession.reportDropResult(mWindow, result); 4932 } catch (RemoteException e) { 4933 Log.e(TAG, "Unable to report drop result"); 4934 } 4935 } 4936 4937 // When the drag operation ends, release any local state object 4938 // that may have been in use 4939 if (what == DragEvent.ACTION_DRAG_ENDED) { 4940 setLocalDragState(null); 4941 } 4942 } 4943 } 4944 event.recycle(); 4945 } 4946 4947 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 4948 if (mSeq != args.seq) { 4949 // The sequence has changed, so we need to update our value and make 4950 // sure to do a traversal afterward so the window manager is given our 4951 // most recent data. 4952 mSeq = args.seq; 4953 mAttachInfo.mForceReportNewAttributes = true; 4954 scheduleTraversals(); 4955 } 4956 if (mView == null) return; 4957 if (args.localChanges != 0) { 4958 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 4959 } 4960 if (mAttachInfo != null) { 4961 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 4962 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 4963 mAttachInfo.mGlobalSystemUiVisibility = visibility; 4964 mView.dispatchSystemUiVisibilityChanged(visibility); 4965 } 4966 } 4967 } 4968 4969 public void handleDispatchDoneAnimating() { 4970 if (mWindowsAnimating) { 4971 mWindowsAnimating = false; 4972 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 4973 scheduleTraversals(); 4974 } 4975 } 4976 } 4977 4978 public void getLastTouchPoint(Point outLocation) { 4979 outLocation.x = (int) mLastTouchPoint.x; 4980 outLocation.y = (int) mLastTouchPoint.y; 4981 } 4982 4983 public void setDragFocus(View newDragTarget) { 4984 if (mCurrentDragView != newDragTarget) { 4985 mCurrentDragView = newDragTarget; 4986 } 4987 } 4988 4989 private AudioManager getAudioManager() { 4990 if (mView == null) { 4991 throw new IllegalStateException("getAudioManager called when there is no mView"); 4992 } 4993 if (mAudioManager == null) { 4994 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 4995 } 4996 return mAudioManager; 4997 } 4998 4999 public AccessibilityInteractionController getAccessibilityInteractionController() { 5000 if (mView == null) { 5001 throw new IllegalStateException("getAccessibilityInteractionController" 5002 + " called when there is no mView"); 5003 } 5004 if (mAccessibilityInteractionController == null) { 5005 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5006 } 5007 return mAccessibilityInteractionController; 5008 } 5009 5010 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5011 boolean insetsPending) throws RemoteException { 5012 5013 float appScale = mAttachInfo.mApplicationScale; 5014 boolean restore = false; 5015 if (params != null && mTranslator != null) { 5016 restore = true; 5017 params.backup(); 5018 mTranslator.translateWindowLayout(params); 5019 } 5020 if (params != null) { 5021 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5022 } 5023 mPendingConfiguration.seq = 0; 5024 //Log.d(TAG, ">>>>>> CALLING relayout"); 5025 if (params != null && mOrigWindowType != params.type) { 5026 // For compatibility with old apps, don't crash here. 5027 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5028 Slog.w(TAG, "Window type can not be changed after " 5029 + "the window is added; ignoring change of " + mView); 5030 params.type = mOrigWindowType; 5031 } 5032 } 5033 int relayoutResult = mWindowSession.relayout( 5034 mWindow, mSeq, params, 5035 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5036 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5037 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5038 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5039 mPendingConfiguration, mSurface); 5040 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5041 if (restore) { 5042 params.restore(); 5043 } 5044 5045 if (mTranslator != null) { 5046 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5047 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5048 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5049 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5050 } 5051 return relayoutResult; 5052 } 5053 5054 /** 5055 * {@inheritDoc} 5056 */ 5057 public void playSoundEffect(int effectId) { 5058 checkThread(); 5059 5060 try { 5061 final AudioManager audioManager = getAudioManager(); 5062 5063 switch (effectId) { 5064 case SoundEffectConstants.CLICK: 5065 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5066 return; 5067 case SoundEffectConstants.NAVIGATION_DOWN: 5068 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5069 return; 5070 case SoundEffectConstants.NAVIGATION_LEFT: 5071 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5072 return; 5073 case SoundEffectConstants.NAVIGATION_RIGHT: 5074 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5075 return; 5076 case SoundEffectConstants.NAVIGATION_UP: 5077 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5078 return; 5079 default: 5080 throw new IllegalArgumentException("unknown effect id " + effectId + 5081 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5082 } 5083 } catch (IllegalStateException e) { 5084 // Exception thrown by getAudioManager() when mView is null 5085 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5086 e.printStackTrace(); 5087 } 5088 } 5089 5090 /** 5091 * {@inheritDoc} 5092 */ 5093 public boolean performHapticFeedback(int effectId, boolean always) { 5094 try { 5095 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5096 } catch (RemoteException e) { 5097 return false; 5098 } 5099 } 5100 5101 /** 5102 * {@inheritDoc} 5103 */ 5104 public View focusSearch(View focused, int direction) { 5105 checkThread(); 5106 if (!(mView instanceof ViewGroup)) { 5107 return null; 5108 } 5109 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5110 } 5111 5112 public void debug() { 5113 mView.debug(); 5114 } 5115 5116 public void dumpGfxInfo(int[] info) { 5117 info[0] = info[1] = 0; 5118 if (mView != null) { 5119 getGfxInfo(mView, info); 5120 } 5121 } 5122 5123 private static void getGfxInfo(View view, int[] info) { 5124 DisplayList displayList = view.mDisplayList; 5125 info[0]++; 5126 if (displayList != null) { 5127 info[1] += displayList.getSize(); 5128 } 5129 5130 if (view instanceof ViewGroup) { 5131 ViewGroup group = (ViewGroup) view; 5132 5133 int count = group.getChildCount(); 5134 for (int i = 0; i < count; i++) { 5135 getGfxInfo(group.getChildAt(i), info); 5136 } 5137 } 5138 } 5139 5140 public void die(boolean immediate) { 5141 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5142 // done by dispatchDetachedFromWindow will cause havoc on return. 5143 if (immediate && !mIsInTraversal) { 5144 doDie(); 5145 } else { 5146 if (!mIsDrawing) { 5147 destroyHardwareRenderer(); 5148 } else { 5149 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5150 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5151 } 5152 mHandler.sendEmptyMessage(MSG_DIE); 5153 } 5154 } 5155 5156 void doDie() { 5157 checkThread(); 5158 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5159 synchronized (this) { 5160 if (mAdded) { 5161 dispatchDetachedFromWindow(); 5162 } 5163 5164 if (mAdded && !mFirst) { 5165 invalidateDisplayLists(); 5166 destroyHardwareRenderer(); 5167 5168 if (mView != null) { 5169 int viewVisibility = mView.getVisibility(); 5170 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5171 if (mWindowAttributesChanged || viewVisibilityChanged) { 5172 // If layout params have been changed, first give them 5173 // to the window manager to make sure it has the correct 5174 // animation info. 5175 try { 5176 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5177 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5178 mWindowSession.finishDrawing(mWindow); 5179 } 5180 } catch (RemoteException e) { 5181 } 5182 } 5183 5184 mSurface.release(); 5185 } 5186 } 5187 5188 mAdded = false; 5189 } 5190 } 5191 5192 public void requestUpdateConfiguration(Configuration config) { 5193 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5194 mHandler.sendMessage(msg); 5195 } 5196 5197 public void loadSystemProperties() { 5198 mHandler.post(new Runnable() { 5199 @Override 5200 public void run() { 5201 // Profiling 5202 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5203 profileRendering(mAttachInfo.mHasWindowFocus); 5204 5205 // Hardware rendering 5206 if (mAttachInfo.mHardwareRenderer != null) { 5207 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5208 invalidate(); 5209 } 5210 } 5211 5212 // Layout debugging 5213 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5214 if (layout != mAttachInfo.mDebugLayout) { 5215 mAttachInfo.mDebugLayout = layout; 5216 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5217 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5218 } 5219 } 5220 } 5221 }); 5222 } 5223 5224 private void destroyHardwareRenderer() { 5225 AttachInfo attachInfo = mAttachInfo; 5226 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5227 5228 if (hardwareRenderer != null) { 5229 if (mView != null) { 5230 hardwareRenderer.destroyHardwareResources(mView); 5231 } 5232 hardwareRenderer.destroy(true); 5233 hardwareRenderer.setRequested(false); 5234 5235 attachInfo.mHardwareRenderer = null; 5236 attachInfo.mHardwareAccelerated = false; 5237 } 5238 } 5239 5240 public void dispatchFinishInputConnection(InputConnection connection) { 5241 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5242 mHandler.sendMessage(msg); 5243 } 5244 5245 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5246 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5247 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5248 + " contentInsets=" + contentInsets.toShortString() 5249 + " visibleInsets=" + visibleInsets.toShortString() 5250 + " reportDraw=" + reportDraw); 5251 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5252 if (mTranslator != null) { 5253 mTranslator.translateRectInScreenToAppWindow(frame); 5254 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5255 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5256 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5257 } 5258 SomeArgs args = SomeArgs.obtain(); 5259 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5260 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5261 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5262 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5263 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5264 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5265 msg.obj = args; 5266 mHandler.sendMessage(msg); 5267 } 5268 5269 public void dispatchMoved(int newX, int newY) { 5270 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5271 if (mTranslator != null) { 5272 PointF point = new PointF(newX, newY); 5273 mTranslator.translatePointInScreenToAppWindow(point); 5274 newX = (int) (point.x + 0.5); 5275 newY = (int) (point.y + 0.5); 5276 } 5277 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5278 mHandler.sendMessage(msg); 5279 } 5280 5281 /** 5282 * Represents a pending input event that is waiting in a queue. 5283 * 5284 * Input events are processed in serial order by the timestamp specified by 5285 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5286 * one input event to the application at a time and waits for the application 5287 * to finish handling it before delivering the next one. 5288 * 5289 * However, because the application or IME can synthesize and inject multiple 5290 * key events at a time without going through the input dispatcher, we end up 5291 * needing a queue on the application's side. 5292 */ 5293 private static final class QueuedInputEvent { 5294 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5295 public static final int FLAG_DEFERRED = 1 << 1; 5296 public static final int FLAG_FINISHED = 1 << 2; 5297 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5298 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5299 5300 public QueuedInputEvent mNext; 5301 5302 public InputEvent mEvent; 5303 public InputEventReceiver mReceiver; 5304 public int mFlags; 5305 5306 public boolean shouldSkipIme() { 5307 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5308 return true; 5309 } 5310 return mEvent instanceof MotionEvent 5311 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5312 } 5313 } 5314 5315 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5316 InputEventReceiver receiver, int flags) { 5317 QueuedInputEvent q = mQueuedInputEventPool; 5318 if (q != null) { 5319 mQueuedInputEventPoolSize -= 1; 5320 mQueuedInputEventPool = q.mNext; 5321 q.mNext = null; 5322 } else { 5323 q = new QueuedInputEvent(); 5324 } 5325 5326 q.mEvent = event; 5327 q.mReceiver = receiver; 5328 q.mFlags = flags; 5329 return q; 5330 } 5331 5332 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5333 q.mEvent = null; 5334 q.mReceiver = null; 5335 5336 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5337 mQueuedInputEventPoolSize += 1; 5338 q.mNext = mQueuedInputEventPool; 5339 mQueuedInputEventPool = q; 5340 } 5341 } 5342 5343 void enqueueInputEvent(InputEvent event) { 5344 enqueueInputEvent(event, null, 0, false); 5345 } 5346 5347 void enqueueInputEvent(InputEvent event, 5348 InputEventReceiver receiver, int flags, boolean processImmediately) { 5349 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5350 5351 // Always enqueue the input event in order, regardless of its time stamp. 5352 // We do this because the application or the IME may inject key events 5353 // in response to touch events and we want to ensure that the injected keys 5354 // are processed in the order they were received and we cannot trust that 5355 // the time stamp of injected events are monotonic. 5356 QueuedInputEvent last = mPendingInputEventTail; 5357 if (last == null) { 5358 mPendingInputEventHead = q; 5359 mPendingInputEventTail = q; 5360 } else { 5361 last.mNext = q; 5362 mPendingInputEventTail = q; 5363 } 5364 mPendingInputEventCount += 1; 5365 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5366 mPendingInputEventCount); 5367 5368 if (processImmediately) { 5369 doProcessInputEvents(); 5370 } else { 5371 scheduleProcessInputEvents(); 5372 } 5373 } 5374 5375 private void scheduleProcessInputEvents() { 5376 if (!mProcessInputEventsScheduled) { 5377 mProcessInputEventsScheduled = true; 5378 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5379 msg.setAsynchronous(true); 5380 mHandler.sendMessage(msg); 5381 } 5382 } 5383 5384 void doProcessInputEvents() { 5385 // Deliver all pending input events in the queue. 5386 while (mPendingInputEventHead != null) { 5387 QueuedInputEvent q = mPendingInputEventHead; 5388 mPendingInputEventHead = q.mNext; 5389 if (mPendingInputEventHead == null) { 5390 mPendingInputEventTail = null; 5391 } 5392 q.mNext = null; 5393 5394 mPendingInputEventCount -= 1; 5395 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5396 mPendingInputEventCount); 5397 5398 deliverInputEvent(q); 5399 } 5400 5401 // We are done processing all input events that we can process right now 5402 // so we can clear the pending flag immediately. 5403 if (mProcessInputEventsScheduled) { 5404 mProcessInputEventsScheduled = false; 5405 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5406 } 5407 } 5408 5409 private void deliverInputEvent(QueuedInputEvent q) { 5410 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5411 try { 5412 if (mInputEventConsistencyVerifier != null) { 5413 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5414 } 5415 5416 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5417 if (stage != null) { 5418 stage.deliver(q); 5419 } else { 5420 finishInputEvent(q); 5421 } 5422 } finally { 5423 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5424 } 5425 } 5426 5427 private void finishInputEvent(QueuedInputEvent q) { 5428 if (q.mReceiver != null) { 5429 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5430 q.mReceiver.finishInputEvent(q.mEvent, handled); 5431 } else { 5432 q.mEvent.recycleIfNeededAfterDispatch(); 5433 } 5434 5435 recycleQueuedInputEvent(q); 5436 } 5437 5438 static boolean isTerminalInputEvent(InputEvent event) { 5439 if (event instanceof KeyEvent) { 5440 final KeyEvent keyEvent = (KeyEvent)event; 5441 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5442 } else { 5443 final MotionEvent motionEvent = (MotionEvent)event; 5444 final int action = motionEvent.getAction(); 5445 return action == MotionEvent.ACTION_UP 5446 || action == MotionEvent.ACTION_CANCEL 5447 || action == MotionEvent.ACTION_HOVER_EXIT; 5448 } 5449 } 5450 5451 void scheduleConsumeBatchedInput() { 5452 if (!mConsumeBatchedInputScheduled) { 5453 mConsumeBatchedInputScheduled = true; 5454 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5455 mConsumedBatchedInputRunnable, null); 5456 } 5457 } 5458 5459 void unscheduleConsumeBatchedInput() { 5460 if (mConsumeBatchedInputScheduled) { 5461 mConsumeBatchedInputScheduled = false; 5462 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5463 mConsumedBatchedInputRunnable, null); 5464 } 5465 } 5466 5467 void doConsumeBatchedInput(long frameTimeNanos) { 5468 if (mConsumeBatchedInputScheduled) { 5469 mConsumeBatchedInputScheduled = false; 5470 if (mInputEventReceiver != null) { 5471 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5472 } 5473 doProcessInputEvents(); 5474 } 5475 } 5476 5477 final class TraversalRunnable implements Runnable { 5478 @Override 5479 public void run() { 5480 doTraversal(); 5481 } 5482 } 5483 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5484 5485 final class WindowInputEventReceiver extends InputEventReceiver { 5486 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5487 super(inputChannel, looper); 5488 } 5489 5490 @Override 5491 public void onInputEvent(InputEvent event) { 5492 enqueueInputEvent(event, this, 0, true); 5493 } 5494 5495 @Override 5496 public void onBatchedInputEventPending() { 5497 scheduleConsumeBatchedInput(); 5498 } 5499 5500 @Override 5501 public void dispose() { 5502 unscheduleConsumeBatchedInput(); 5503 super.dispose(); 5504 } 5505 } 5506 WindowInputEventReceiver mInputEventReceiver; 5507 5508 final class ConsumeBatchedInputRunnable implements Runnable { 5509 @Override 5510 public void run() { 5511 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5512 } 5513 } 5514 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5515 new ConsumeBatchedInputRunnable(); 5516 boolean mConsumeBatchedInputScheduled; 5517 5518 final class InvalidateOnAnimationRunnable implements Runnable { 5519 private boolean mPosted; 5520 private ArrayList<View> mViews = new ArrayList<View>(); 5521 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5522 new ArrayList<AttachInfo.InvalidateInfo>(); 5523 private View[] mTempViews; 5524 private AttachInfo.InvalidateInfo[] mTempViewRects; 5525 5526 public void addView(View view) { 5527 synchronized (this) { 5528 mViews.add(view); 5529 postIfNeededLocked(); 5530 } 5531 } 5532 5533 public void addViewRect(AttachInfo.InvalidateInfo info) { 5534 synchronized (this) { 5535 mViewRects.add(info); 5536 postIfNeededLocked(); 5537 } 5538 } 5539 5540 public void removeView(View view) { 5541 synchronized (this) { 5542 mViews.remove(view); 5543 5544 for (int i = mViewRects.size(); i-- > 0; ) { 5545 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5546 if (info.target == view) { 5547 mViewRects.remove(i); 5548 info.recycle(); 5549 } 5550 } 5551 5552 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5553 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5554 mPosted = false; 5555 } 5556 } 5557 } 5558 5559 @Override 5560 public void run() { 5561 final int viewCount; 5562 final int viewRectCount; 5563 synchronized (this) { 5564 mPosted = false; 5565 5566 viewCount = mViews.size(); 5567 if (viewCount != 0) { 5568 mTempViews = mViews.toArray(mTempViews != null 5569 ? mTempViews : new View[viewCount]); 5570 mViews.clear(); 5571 } 5572 5573 viewRectCount = mViewRects.size(); 5574 if (viewRectCount != 0) { 5575 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5576 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5577 mViewRects.clear(); 5578 } 5579 } 5580 5581 for (int i = 0; i < viewCount; i++) { 5582 mTempViews[i].invalidate(); 5583 mTempViews[i] = null; 5584 } 5585 5586 for (int i = 0; i < viewRectCount; i++) { 5587 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5588 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5589 info.recycle(); 5590 } 5591 } 5592 5593 private void postIfNeededLocked() { 5594 if (!mPosted) { 5595 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5596 mPosted = true; 5597 } 5598 } 5599 } 5600 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5601 new InvalidateOnAnimationRunnable(); 5602 5603 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5604 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5605 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5606 } 5607 5608 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5609 long delayMilliseconds) { 5610 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5611 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5612 } 5613 5614 public void dispatchInvalidateOnAnimation(View view) { 5615 mInvalidateOnAnimationRunnable.addView(view); 5616 } 5617 5618 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5619 mInvalidateOnAnimationRunnable.addViewRect(info); 5620 } 5621 5622 public void enqueueDisplayList(DisplayList displayList) { 5623 mDisplayLists.add(displayList); 5624 } 5625 5626 public void cancelInvalidate(View view) { 5627 mHandler.removeMessages(MSG_INVALIDATE, view); 5628 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5629 // them to the pool 5630 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5631 mInvalidateOnAnimationRunnable.removeView(view); 5632 } 5633 5634 public void dispatchKey(KeyEvent event) { 5635 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 5636 msg.setAsynchronous(true); 5637 mHandler.sendMessage(msg); 5638 } 5639 5640 public void dispatchKeyFromIme(KeyEvent event) { 5641 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5642 msg.setAsynchronous(true); 5643 mHandler.sendMessage(msg); 5644 } 5645 5646 public void dispatchUnhandledKey(KeyEvent event) { 5647 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5648 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5649 final int keyCode = event.getKeyCode(); 5650 final int metaState = event.getMetaState(); 5651 5652 // Check for fallback actions specified by the key character map. 5653 KeyCharacterMap.FallbackAction fallbackAction = 5654 kcm.getFallbackAction(keyCode, metaState); 5655 if (fallbackAction != null) { 5656 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5657 KeyEvent fallbackEvent = KeyEvent.obtain( 5658 event.getDownTime(), event.getEventTime(), 5659 event.getAction(), fallbackAction.keyCode, 5660 event.getRepeatCount(), fallbackAction.metaState, 5661 event.getDeviceId(), event.getScanCode(), 5662 flags, event.getSource(), null); 5663 fallbackAction.recycle(); 5664 5665 dispatchKey(fallbackEvent); 5666 } 5667 } 5668 } 5669 5670 public void dispatchAppVisibility(boolean visible) { 5671 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5672 msg.arg1 = visible ? 1 : 0; 5673 mHandler.sendMessage(msg); 5674 } 5675 5676 public void dispatchScreenStateChange(boolean on) { 5677 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5678 msg.arg1 = on ? 1 : 0; 5679 mHandler.sendMessage(msg); 5680 } 5681 5682 public void dispatchGetNewSurface() { 5683 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5684 mHandler.sendMessage(msg); 5685 } 5686 5687 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5688 Message msg = Message.obtain(); 5689 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5690 msg.arg1 = hasFocus ? 1 : 0; 5691 msg.arg2 = inTouchMode ? 1 : 0; 5692 mHandler.sendMessage(msg); 5693 } 5694 5695 public void dispatchCloseSystemDialogs(String reason) { 5696 Message msg = Message.obtain(); 5697 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5698 msg.obj = reason; 5699 mHandler.sendMessage(msg); 5700 } 5701 5702 public void dispatchDragEvent(DragEvent event) { 5703 final int what; 5704 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5705 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5706 mHandler.removeMessages(what); 5707 } else { 5708 what = MSG_DISPATCH_DRAG_EVENT; 5709 } 5710 Message msg = mHandler.obtainMessage(what, event); 5711 mHandler.sendMessage(msg); 5712 } 5713 5714 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5715 int localValue, int localChanges) { 5716 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5717 args.seq = seq; 5718 args.globalVisibility = globalVisibility; 5719 args.localValue = localValue; 5720 args.localChanges = localChanges; 5721 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5722 } 5723 5724 public void dispatchDoneAnimating() { 5725 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5726 } 5727 5728 public void dispatchCheckFocus() { 5729 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5730 // This will result in a call to checkFocus() below. 5731 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5732 } 5733 } 5734 5735 /** 5736 * Post a callback to send a 5737 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5738 * This event is send at most once every 5739 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5740 */ 5741 private void postSendWindowContentChangedCallback(View source) { 5742 if (mSendWindowContentChangedAccessibilityEvent == null) { 5743 mSendWindowContentChangedAccessibilityEvent = 5744 new SendWindowContentChangedAccessibilityEvent(); 5745 } 5746 View oldSource = mSendWindowContentChangedAccessibilityEvent.mSource; 5747 if (oldSource == null) { 5748 mSendWindowContentChangedAccessibilityEvent.mSource = source; 5749 mHandler.postDelayed(mSendWindowContentChangedAccessibilityEvent, 5750 ViewConfiguration.getSendRecurringAccessibilityEventsInterval()); 5751 } else { 5752 mSendWindowContentChangedAccessibilityEvent.mSource = 5753 getCommonPredecessor(oldSource, source); 5754 } 5755 } 5756 5757 /** 5758 * Remove a posted callback to send a 5759 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5760 */ 5761 private void removeSendWindowContentChangedCallback() { 5762 if (mSendWindowContentChangedAccessibilityEvent != null) { 5763 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5764 } 5765 } 5766 5767 public boolean showContextMenuForChild(View originalView) { 5768 return false; 5769 } 5770 5771 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5772 return null; 5773 } 5774 5775 public void createContextMenu(ContextMenu menu) { 5776 } 5777 5778 public void childDrawableStateChanged(View child) { 5779 } 5780 5781 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5782 if (mView == null) { 5783 return false; 5784 } 5785 // Intercept accessibility focus events fired by virtual nodes to keep 5786 // track of accessibility focus position in such nodes. 5787 final int eventType = event.getEventType(); 5788 switch (eventType) { 5789 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5790 final long sourceNodeId = event.getSourceNodeId(); 5791 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5792 sourceNodeId); 5793 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5794 if (source != null) { 5795 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5796 if (provider != null) { 5797 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5798 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5799 setAccessibilityFocus(source, node); 5800 } 5801 } 5802 } break; 5803 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5804 final long sourceNodeId = event.getSourceNodeId(); 5805 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5806 sourceNodeId); 5807 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5808 if (source != null) { 5809 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5810 if (provider != null) { 5811 setAccessibilityFocus(null, null); 5812 } 5813 } 5814 } break; 5815 } 5816 mAccessibilityManager.sendAccessibilityEvent(event); 5817 return true; 5818 } 5819 5820 @Override 5821 public void childAccessibilityStateChanged(View child) { 5822 postSendWindowContentChangedCallback(child); 5823 } 5824 5825 @Override 5826 public boolean canResolveLayoutDirection() { 5827 return true; 5828 } 5829 5830 @Override 5831 public boolean isLayoutDirectionResolved() { 5832 return true; 5833 } 5834 5835 @Override 5836 public int getLayoutDirection() { 5837 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5838 } 5839 5840 @Override 5841 public boolean canResolveTextDirection() { 5842 return true; 5843 } 5844 5845 @Override 5846 public boolean isTextDirectionResolved() { 5847 return true; 5848 } 5849 5850 @Override 5851 public int getTextDirection() { 5852 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5853 } 5854 5855 @Override 5856 public boolean canResolveTextAlignment() { 5857 return true; 5858 } 5859 5860 @Override 5861 public boolean isTextAlignmentResolved() { 5862 return true; 5863 } 5864 5865 @Override 5866 public int getTextAlignment() { 5867 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5868 } 5869 5870 private View getCommonPredecessor(View first, View second) { 5871 if (mAttachInfo != null) { 5872 if (mTempHashSet == null) { 5873 mTempHashSet = new HashSet<View>(); 5874 } 5875 HashSet<View> seen = mTempHashSet; 5876 seen.clear(); 5877 View firstCurrent = first; 5878 while (firstCurrent != null) { 5879 seen.add(firstCurrent); 5880 ViewParent firstCurrentParent = firstCurrent.mParent; 5881 if (firstCurrentParent instanceof View) { 5882 firstCurrent = (View) firstCurrentParent; 5883 } else { 5884 firstCurrent = null; 5885 } 5886 } 5887 View secondCurrent = second; 5888 while (secondCurrent != null) { 5889 if (seen.contains(secondCurrent)) { 5890 seen.clear(); 5891 return secondCurrent; 5892 } 5893 ViewParent secondCurrentParent = secondCurrent.mParent; 5894 if (secondCurrentParent instanceof View) { 5895 secondCurrent = (View) secondCurrentParent; 5896 } else { 5897 secondCurrent = null; 5898 } 5899 } 5900 seen.clear(); 5901 } 5902 return null; 5903 } 5904 5905 void checkThread() { 5906 if (mThread != Thread.currentThread()) { 5907 throw new CalledFromWrongThreadException( 5908 "Only the original thread that created a view hierarchy can touch its views."); 5909 } 5910 } 5911 5912 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 5913 // ViewAncestor never intercepts touch event, so this can be a no-op 5914 } 5915 5916 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 5917 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 5918 if (rectangle != null) { 5919 mTempRect.set(rectangle); 5920 mTempRect.offset(0, -mCurScrollY); 5921 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 5922 try { 5923 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 5924 } catch (RemoteException re) { 5925 /* ignore */ 5926 } 5927 } 5928 return scrolled; 5929 } 5930 5931 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 5932 // Do nothing. 5933 } 5934 5935 class TakenSurfaceHolder extends BaseSurfaceHolder { 5936 @Override 5937 public boolean onAllowLockCanvas() { 5938 return mDrawingAllowed; 5939 } 5940 5941 @Override 5942 public void onRelayoutContainer() { 5943 // Not currently interesting -- from changing between fixed and layout size. 5944 } 5945 5946 public void setFormat(int format) { 5947 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 5948 } 5949 5950 public void setType(int type) { 5951 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 5952 } 5953 5954 @Override 5955 public void onUpdateSurface() { 5956 // We take care of format and type changes on our own. 5957 throw new IllegalStateException("Shouldn't be here"); 5958 } 5959 5960 public boolean isCreating() { 5961 return mIsCreating; 5962 } 5963 5964 @Override 5965 public void setFixedSize(int width, int height) { 5966 throw new UnsupportedOperationException( 5967 "Currently only support sizing from layout"); 5968 } 5969 5970 public void setKeepScreenOn(boolean screenOn) { 5971 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 5972 } 5973 } 5974 5975 static class W extends IWindow.Stub { 5976 private final WeakReference<ViewRootImpl> mViewAncestor; 5977 private final IWindowSession mWindowSession; 5978 5979 W(ViewRootImpl viewAncestor) { 5980 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 5981 mWindowSession = viewAncestor.mWindowSession; 5982 } 5983 5984 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 5985 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5986 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5987 if (viewAncestor != null) { 5988 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 5989 visibleInsets, reportDraw, newConfig); 5990 } 5991 } 5992 5993 @Override 5994 public void moved(int newX, int newY) { 5995 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5996 if (viewAncestor != null) { 5997 viewAncestor.dispatchMoved(newX, newY); 5998 } 5999 } 6000 6001 public void dispatchAppVisibility(boolean visible) { 6002 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6003 if (viewAncestor != null) { 6004 viewAncestor.dispatchAppVisibility(visible); 6005 } 6006 } 6007 6008 public void dispatchScreenState(boolean on) { 6009 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6010 if (viewAncestor != null) { 6011 viewAncestor.dispatchScreenStateChange(on); 6012 } 6013 } 6014 6015 public void dispatchGetNewSurface() { 6016 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6017 if (viewAncestor != null) { 6018 viewAncestor.dispatchGetNewSurface(); 6019 } 6020 } 6021 6022 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6023 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6024 if (viewAncestor != null) { 6025 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6026 } 6027 } 6028 6029 private static int checkCallingPermission(String permission) { 6030 try { 6031 return ActivityManagerNative.getDefault().checkPermission( 6032 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6033 } catch (RemoteException e) { 6034 return PackageManager.PERMISSION_DENIED; 6035 } 6036 } 6037 6038 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6039 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6040 if (viewAncestor != null) { 6041 final View view = viewAncestor.mView; 6042 if (view != null) { 6043 if (checkCallingPermission(Manifest.permission.DUMP) != 6044 PackageManager.PERMISSION_GRANTED) { 6045 throw new SecurityException("Insufficient permissions to invoke" 6046 + " executeCommand() from pid=" + Binder.getCallingPid() 6047 + ", uid=" + Binder.getCallingUid()); 6048 } 6049 6050 OutputStream clientStream = null; 6051 try { 6052 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6053 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6054 } catch (IOException e) { 6055 e.printStackTrace(); 6056 } finally { 6057 if (clientStream != null) { 6058 try { 6059 clientStream.close(); 6060 } catch (IOException e) { 6061 e.printStackTrace(); 6062 } 6063 } 6064 } 6065 } 6066 } 6067 } 6068 6069 public void closeSystemDialogs(String reason) { 6070 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6071 if (viewAncestor != null) { 6072 viewAncestor.dispatchCloseSystemDialogs(reason); 6073 } 6074 } 6075 6076 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6077 boolean sync) { 6078 if (sync) { 6079 try { 6080 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6081 } catch (RemoteException e) { 6082 } 6083 } 6084 } 6085 6086 public void dispatchWallpaperCommand(String action, int x, int y, 6087 int z, Bundle extras, boolean sync) { 6088 if (sync) { 6089 try { 6090 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6091 } catch (RemoteException e) { 6092 } 6093 } 6094 } 6095 6096 /* Drag/drop */ 6097 public void dispatchDragEvent(DragEvent event) { 6098 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6099 if (viewAncestor != null) { 6100 viewAncestor.dispatchDragEvent(event); 6101 } 6102 } 6103 6104 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6105 int localValue, int localChanges) { 6106 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6107 if (viewAncestor != null) { 6108 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6109 localValue, localChanges); 6110 } 6111 } 6112 6113 public void doneAnimating() { 6114 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6115 if (viewAncestor != null) { 6116 viewAncestor.dispatchDoneAnimating(); 6117 } 6118 } 6119 } 6120 6121 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6122 public CalledFromWrongThreadException(String msg) { 6123 super(msg); 6124 } 6125 } 6126 6127 private SurfaceHolder mHolder = new SurfaceHolder() { 6128 // we only need a SurfaceHolder for opengl. it would be nice 6129 // to implement everything else though, especially the callback 6130 // support (opengl doesn't make use of it right now, but eventually 6131 // will). 6132 public Surface getSurface() { 6133 return mSurface; 6134 } 6135 6136 public boolean isCreating() { 6137 return false; 6138 } 6139 6140 public void addCallback(Callback callback) { 6141 } 6142 6143 public void removeCallback(Callback callback) { 6144 } 6145 6146 public void setFixedSize(int width, int height) { 6147 } 6148 6149 public void setSizeFromLayout() { 6150 } 6151 6152 public void setFormat(int format) { 6153 } 6154 6155 public void setType(int type) { 6156 } 6157 6158 public void setKeepScreenOn(boolean screenOn) { 6159 } 6160 6161 public Canvas lockCanvas() { 6162 return null; 6163 } 6164 6165 public Canvas lockCanvas(Rect dirty) { 6166 return null; 6167 } 6168 6169 public void unlockCanvasAndPost(Canvas canvas) { 6170 } 6171 public Rect getSurfaceFrame() { 6172 return null; 6173 } 6174 }; 6175 6176 static RunQueue getRunQueue() { 6177 RunQueue rq = sRunQueues.get(); 6178 if (rq != null) { 6179 return rq; 6180 } 6181 rq = new RunQueue(); 6182 sRunQueues.set(rq); 6183 return rq; 6184 } 6185 6186 /** 6187 * The run queue is used to enqueue pending work from Views when no Handler is 6188 * attached. The work is executed during the next call to performTraversals on 6189 * the thread. 6190 * @hide 6191 */ 6192 static final class RunQueue { 6193 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6194 6195 void post(Runnable action) { 6196 postDelayed(action, 0); 6197 } 6198 6199 void postDelayed(Runnable action, long delayMillis) { 6200 HandlerAction handlerAction = new HandlerAction(); 6201 handlerAction.action = action; 6202 handlerAction.delay = delayMillis; 6203 6204 synchronized (mActions) { 6205 mActions.add(handlerAction); 6206 } 6207 } 6208 6209 void removeCallbacks(Runnable action) { 6210 final HandlerAction handlerAction = new HandlerAction(); 6211 handlerAction.action = action; 6212 6213 synchronized (mActions) { 6214 final ArrayList<HandlerAction> actions = mActions; 6215 6216 while (actions.remove(handlerAction)) { 6217 // Keep going 6218 } 6219 } 6220 } 6221 6222 void executeActions(Handler handler) { 6223 synchronized (mActions) { 6224 final ArrayList<HandlerAction> actions = mActions; 6225 final int count = actions.size(); 6226 6227 for (int i = 0; i < count; i++) { 6228 final HandlerAction handlerAction = actions.get(i); 6229 handler.postDelayed(handlerAction.action, handlerAction.delay); 6230 } 6231 6232 actions.clear(); 6233 } 6234 } 6235 6236 private static class HandlerAction { 6237 Runnable action; 6238 long delay; 6239 6240 @Override 6241 public boolean equals(Object o) { 6242 if (this == o) return true; 6243 if (o == null || getClass() != o.getClass()) return false; 6244 6245 HandlerAction that = (HandlerAction) o; 6246 return !(action != null ? !action.equals(that.action) : that.action != null); 6247 6248 } 6249 6250 @Override 6251 public int hashCode() { 6252 int result = action != null ? action.hashCode() : 0; 6253 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6254 return result; 6255 } 6256 } 6257 } 6258 6259 /** 6260 * Class for managing the accessibility interaction connection 6261 * based on the global accessibility state. 6262 */ 6263 final class AccessibilityInteractionConnectionManager 6264 implements AccessibilityStateChangeListener { 6265 public void onAccessibilityStateChanged(boolean enabled) { 6266 if (enabled) { 6267 ensureConnection(); 6268 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6269 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6270 View focusedView = mView.findFocus(); 6271 if (focusedView != null && focusedView != mView) { 6272 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6273 } 6274 } 6275 } else { 6276 ensureNoConnection(); 6277 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6278 } 6279 } 6280 6281 public void ensureConnection() { 6282 if (mAttachInfo != null) { 6283 final boolean registered = 6284 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6285 if (!registered) { 6286 mAttachInfo.mAccessibilityWindowId = 6287 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6288 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6289 } 6290 } 6291 } 6292 6293 public void ensureNoConnection() { 6294 final boolean registered = 6295 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6296 if (registered) { 6297 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6298 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6299 } 6300 } 6301 } 6302 6303 /** 6304 * This class is an interface this ViewAncestor provides to the 6305 * AccessibilityManagerService to the latter can interact with 6306 * the view hierarchy in this ViewAncestor. 6307 */ 6308 static final class AccessibilityInteractionConnection 6309 extends IAccessibilityInteractionConnection.Stub { 6310 private final WeakReference<ViewRootImpl> mViewRootImpl; 6311 6312 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6313 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6314 } 6315 6316 @Override 6317 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6318 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6319 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6320 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6321 if (viewRootImpl != null && viewRootImpl.mView != null) { 6322 viewRootImpl.getAccessibilityInteractionController() 6323 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6324 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6325 spec); 6326 } else { 6327 // We cannot make the call and notify the caller so it does not wait. 6328 try { 6329 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6330 } catch (RemoteException re) { 6331 /* best effort - ignore */ 6332 } 6333 } 6334 } 6335 6336 @Override 6337 public void performAccessibilityAction(long accessibilityNodeId, int action, 6338 Bundle arguments, int interactionId, 6339 IAccessibilityInteractionConnectionCallback callback, int flags, 6340 int interogatingPid, long interrogatingTid) { 6341 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6342 if (viewRootImpl != null && viewRootImpl.mView != null) { 6343 viewRootImpl.getAccessibilityInteractionController() 6344 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6345 interactionId, callback, flags, interogatingPid, interrogatingTid); 6346 } else { 6347 // We cannot make the call and notify the caller so it does not wait. 6348 try { 6349 callback.setPerformAccessibilityActionResult(false, interactionId); 6350 } catch (RemoteException re) { 6351 /* best effort - ignore */ 6352 } 6353 } 6354 } 6355 6356 @Override 6357 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6358 String viewId, int interactionId, 6359 IAccessibilityInteractionConnectionCallback callback, int flags, 6360 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6361 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6362 if (viewRootImpl != null && viewRootImpl.mView != null) { 6363 viewRootImpl.getAccessibilityInteractionController() 6364 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6365 viewId, interactionId, callback, flags, interrogatingPid, 6366 interrogatingTid, spec); 6367 } else { 6368 // We cannot make the call and notify the caller so it does not wait. 6369 try { 6370 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6371 } catch (RemoteException re) { 6372 /* best effort - ignore */ 6373 } 6374 } 6375 } 6376 6377 @Override 6378 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6379 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6380 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6381 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6382 if (viewRootImpl != null && viewRootImpl.mView != null) { 6383 viewRootImpl.getAccessibilityInteractionController() 6384 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6385 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6386 spec); 6387 } else { 6388 // We cannot make the call and notify the caller so it does not wait. 6389 try { 6390 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6391 } catch (RemoteException re) { 6392 /* best effort - ignore */ 6393 } 6394 } 6395 } 6396 6397 @Override 6398 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6399 IAccessibilityInteractionConnectionCallback callback, int flags, 6400 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6401 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6402 if (viewRootImpl != null && viewRootImpl.mView != null) { 6403 viewRootImpl.getAccessibilityInteractionController() 6404 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6405 flags, interrogatingPid, interrogatingTid, spec); 6406 } else { 6407 // We cannot make the call and notify the caller so it does not wait. 6408 try { 6409 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6410 } catch (RemoteException re) { 6411 /* best effort - ignore */ 6412 } 6413 } 6414 } 6415 6416 @Override 6417 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6418 IAccessibilityInteractionConnectionCallback callback, int flags, 6419 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6420 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6421 if (viewRootImpl != null && viewRootImpl.mView != null) { 6422 viewRootImpl.getAccessibilityInteractionController() 6423 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6424 callback, flags, interrogatingPid, interrogatingTid, spec); 6425 } else { 6426 // We cannot make the call and notify the caller so it does not wait. 6427 try { 6428 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6429 } catch (RemoteException re) { 6430 /* best effort - ignore */ 6431 } 6432 } 6433 } 6434 } 6435 6436 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6437 public View mSource; 6438 6439 public void run() { 6440 if (mSource != null) { 6441 mSource.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6442 mSource.resetAccessibilityStateChanged(); 6443 mSource = null; 6444 } 6445 } 6446 } 6447} 6448