ViewRootImpl.java revision 6a591f585909415a1da431a2cc76b7732724037d
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.ComponentCallbacks2; 25import android.content.Context; 26import android.content.pm.PackageManager; 27import android.content.res.CompatibilityInfo; 28import android.content.res.Configuration; 29import android.content.res.Resources; 30import android.graphics.Canvas; 31import android.graphics.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.media.AudioManager; 40import android.os.Binder; 41import android.os.Bundle; 42import android.os.Debug; 43import android.os.Handler; 44import android.os.Looper; 45import android.os.Message; 46import android.os.ParcelFileDescriptor; 47import android.os.PowerManager; 48import android.os.Process; 49import android.os.RemoteException; 50import android.os.SystemClock; 51import android.os.SystemProperties; 52import android.os.Trace; 53import android.util.AndroidRuntimeException; 54import android.util.DisplayMetrics; 55import android.util.Log; 56import android.util.Slog; 57import android.util.TypedValue; 58import android.view.View.AttachInfo; 59import android.view.View.MeasureSpec; 60import android.view.accessibility.AccessibilityEvent; 61import android.view.accessibility.AccessibilityManager; 62import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 63import android.view.accessibility.AccessibilityNodeInfo; 64import android.view.accessibility.AccessibilityNodeProvider; 65import android.view.accessibility.IAccessibilityInteractionConnection; 66import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 67import android.view.animation.AccelerateDecelerateInterpolator; 68import android.view.animation.Interpolator; 69import android.view.inputmethod.InputConnection; 70import android.view.inputmethod.InputMethodManager; 71import android.view.Surface.OutOfResourcesException; 72import android.widget.Scroller; 73 74import com.android.internal.R; 75import com.android.internal.os.SomeArgs; 76import com.android.internal.policy.PolicyManager; 77import com.android.internal.view.BaseSurfaceHolder; 78import com.android.internal.view.RootViewSurfaceTaker; 79 80import java.io.IOException; 81import java.io.OutputStream; 82import java.lang.ref.WeakReference; 83import java.util.ArrayList; 84import java.util.HashSet; 85 86/** 87 * The top of a view hierarchy, implementing the needed protocol between View 88 * and the WindowManager. This is for the most part an internal implementation 89 * detail of {@link WindowManagerGlobal}. 90 * 91 * {@hide} 92 */ 93@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 94public final class ViewRootImpl implements ViewParent, 95 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 96 private static final String TAG = "ViewRootImpl"; 97 private static final boolean DBG = false; 98 private static final boolean LOCAL_LOGV = false; 99 /** @noinspection PointlessBooleanExpression*/ 100 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 101 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 102 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 103 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 104 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 105 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 106 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 107 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 108 private static final boolean DEBUG_FPS = false; 109 private static final boolean DEBUG_INPUT_PROCESSING = false || LOCAL_LOGV; 110 111 /** 112 * Set this system property to true to force the view hierarchy to render 113 * at 60 Hz. This can be used to measure the potential framerate. 114 */ 115 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 116 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 117 118 /** 119 * Maximum time we allow the user to roll the trackball enough to generate 120 * a key event, before resetting the counters. 121 */ 122 static final int MAX_TRACKBALL_DELAY = 250; 123 124 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 125 126 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 127 static boolean sFirstDrawComplete = false; 128 129 static final ArrayList<ComponentCallbacks> sConfigCallbacks 130 = new ArrayList<ComponentCallbacks>(); 131 132 final Context mContext; 133 final IWindowSession mWindowSession; 134 final Display mDisplay; 135 final String mBasePackageName; 136 137 final int[] mTmpLocation = new int[2]; 138 139 final TypedValue mTmpValue = new TypedValue(); 140 141 final Thread mThread; 142 143 final WindowLeaked mLocation; 144 145 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 146 147 final W mWindow; 148 149 final int mTargetSdkVersion; 150 151 int mSeq; 152 153 View mView; 154 155 View mAccessibilityFocusedHost; 156 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 157 158 int mViewVisibility; 159 boolean mAppVisible = true; 160 int mOrigWindowType = -1; 161 162 // Set to true if the owner of this window is in the stopped state, 163 // so the window should no longer be active. 164 boolean mStopped = false; 165 166 boolean mLastInCompatMode = false; 167 168 SurfaceHolder.Callback2 mSurfaceHolderCallback; 169 BaseSurfaceHolder mSurfaceHolder; 170 boolean mIsCreating; 171 boolean mDrawingAllowed; 172 173 final Region mTransparentRegion; 174 final Region mPreviousTransparentRegion; 175 176 int mWidth; 177 int mHeight; 178 Rect mDirty; 179 final Rect mCurrentDirty = new Rect(); 180 boolean mIsAnimating; 181 182 CompatibilityInfo.Translator mTranslator; 183 184 final View.AttachInfo mAttachInfo; 185 InputChannel mInputChannel; 186 InputQueue.Callback mInputQueueCallback; 187 InputQueue mInputQueue; 188 FallbackEventHandler mFallbackEventHandler; 189 Choreographer mChoreographer; 190 191 final Rect mTempRect; // used in the transaction to not thrash the heap. 192 final Rect mVisRect; // used to retrieve visible rect of focused view. 193 194 boolean mTraversalScheduled; 195 int mTraversalBarrier; 196 boolean mWillDrawSoon; 197 /** Set to true while in performTraversals for detecting when die(true) is called from internal 198 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 199 boolean mIsInTraversal; 200 boolean mFitSystemWindowsRequested; 201 boolean mLayoutRequested; 202 boolean mFirst; 203 boolean mReportNextDraw; 204 boolean mFullRedrawNeeded; 205 boolean mNewSurfaceNeeded; 206 boolean mHasHadWindowFocus; 207 boolean mLastWasImTarget; 208 boolean mWindowsAnimating; 209 boolean mDrawDuringWindowsAnimating; 210 boolean mIsDrawing; 211 int mLastSystemUiVisibility; 212 int mClientWindowLayoutFlags; 213 boolean mLastOverscanRequested; 214 215 // Pool of queued input events. 216 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 217 private QueuedInputEvent mQueuedInputEventPool; 218 private int mQueuedInputEventPoolSize; 219 220 /* Input event queue. 221 * Pending input events are input events waiting to be delivered to the input stages 222 * and handled by the application. 223 */ 224 QueuedInputEvent mPendingInputEventHead; 225 QueuedInputEvent mPendingInputEventTail; 226 int mPendingInputEventCount; 227 boolean mProcessInputEventsScheduled; 228 String mPendingInputEventQueueLengthCounterName = "pq"; 229 230 InputStage mFirstInputStage; 231 InputStage mFirstPostImeInputStage; 232 233 boolean mFlipControllerFallbackKeys; 234 235 boolean mWindowAttributesChanged = false; 236 int mWindowAttributesChangesFlag = 0; 237 238 // These can be accessed by any thread, must be protected with a lock. 239 // Surface can never be reassigned or cleared (use Surface.clear()). 240 private final Surface mSurface = new Surface(); 241 242 boolean mAdded; 243 boolean mAddedTouchMode; 244 245 final DisplayAdjustments mDisplayAdjustments; 246 247 // These are accessed by multiple threads. 248 final Rect mWinFrame; // frame given by window manager. 249 250 final Rect mPendingOverscanInsets = new Rect(); 251 final Rect mPendingVisibleInsets = new Rect(); 252 final Rect mPendingContentInsets = new Rect(); 253 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 254 = new ViewTreeObserver.InternalInsetsInfo(); 255 256 final Rect mFitSystemWindowsInsets = new Rect(); 257 258 final Configuration mLastConfiguration = new Configuration(); 259 final Configuration mPendingConfiguration = new Configuration(); 260 261 boolean mScrollMayChange; 262 int mSoftInputMode; 263 WeakReference<View> mLastScrolledFocus; 264 int mScrollY; 265 int mCurScrollY; 266 Scroller mScroller; 267 HardwareLayer mResizeBuffer; 268 long mResizeBufferStartTime; 269 int mResizeBufferDuration; 270 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 271 private ArrayList<LayoutTransition> mPendingTransitions; 272 273 final ViewConfiguration mViewConfiguration; 274 275 /* Drag/drop */ 276 ClipDescription mDragDescription; 277 View mCurrentDragView; 278 volatile Object mLocalDragState; 279 final PointF mDragPoint = new PointF(); 280 final PointF mLastTouchPoint = new PointF(); 281 282 private boolean mProfileRendering; 283 private Choreographer.FrameCallback mRenderProfiler; 284 private boolean mRenderProfilingEnabled; 285 286 private boolean mMediaDisabled; 287 288 // Variables to track frames per second, enabled via DEBUG_FPS flag 289 private long mFpsStartTime = -1; 290 private long mFpsPrevTime = -1; 291 private int mFpsNumFrames; 292 293 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 294 295 /** 296 * see {@link #playSoundEffect(int)} 297 */ 298 AudioManager mAudioManager; 299 300 final AccessibilityManager mAccessibilityManager; 301 302 AccessibilityInteractionController mAccessibilityInteractionController; 303 304 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 305 306 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 307 308 HashSet<View> mTempHashSet; 309 310 private final int mDensity; 311 private final int mNoncompatDensity; 312 313 private boolean mInLayout = false; 314 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 315 boolean mHandlingLayoutInLayoutRequest = false; 316 317 private int mViewLayoutDirectionInitial; 318 319 /** Set to true once doDie() has been called. */ 320 private boolean mRemoved; 321 322 /** 323 * Consistency verifier for debugging purposes. 324 */ 325 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 326 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 327 new InputEventConsistencyVerifier(this, 0) : null; 328 329 static final class SystemUiVisibilityInfo { 330 int seq; 331 int globalVisibility; 332 int localValue; 333 int localChanges; 334 } 335 336 public ViewRootImpl(Context context, Display display) { 337 mContext = context; 338 mWindowSession = WindowManagerGlobal.getWindowSession(); 339 mDisplay = display; 340 mBasePackageName = context.getBasePackageName(); 341 342 mDisplayAdjustments = display.getDisplayAdjustments(); 343 344 mThread = Thread.currentThread(); 345 mLocation = new WindowLeaked(null); 346 mLocation.fillInStackTrace(); 347 mWidth = -1; 348 mHeight = -1; 349 mDirty = new Rect(); 350 mTempRect = new Rect(); 351 mVisRect = new Rect(); 352 mWinFrame = new Rect(); 353 mWindow = new W(this); 354 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 355 mViewVisibility = View.GONE; 356 mTransparentRegion = new Region(); 357 mPreviousTransparentRegion = new Region(); 358 mFirst = true; // true for the first time the view is added 359 mAdded = false; 360 mAccessibilityManager = AccessibilityManager.getInstance(context); 361 mAccessibilityInteractionConnectionManager = 362 new AccessibilityInteractionConnectionManager(); 363 mAccessibilityManager.addAccessibilityStateChangeListener( 364 mAccessibilityInteractionConnectionManager); 365 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 366 mViewConfiguration = ViewConfiguration.get(context); 367 mDensity = context.getResources().getDisplayMetrics().densityDpi; 368 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 369 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 370 mChoreographer = Choreographer.getInstance(); 371 mFlipControllerFallbackKeys = 372 context.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 373 374 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 375 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 376 loadSystemProperties(); 377 } 378 379 public static void addFirstDrawHandler(Runnable callback) { 380 synchronized (sFirstDrawHandlers) { 381 if (!sFirstDrawComplete) { 382 sFirstDrawHandlers.add(callback); 383 } 384 } 385 } 386 387 public static void addConfigCallback(ComponentCallbacks callback) { 388 synchronized (sConfigCallbacks) { 389 sConfigCallbacks.add(callback); 390 } 391 } 392 393 // FIXME for perf testing only 394 private boolean mProfile = false; 395 396 /** 397 * Call this to profile the next traversal call. 398 * FIXME for perf testing only. Remove eventually 399 */ 400 public void profile() { 401 mProfile = true; 402 } 403 404 /** 405 * Indicates whether we are in touch mode. Calling this method triggers an IPC 406 * call and should be avoided whenever possible. 407 * 408 * @return True, if the device is in touch mode, false otherwise. 409 * 410 * @hide 411 */ 412 static boolean isInTouchMode() { 413 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 414 if (windowSession != null) { 415 try { 416 return windowSession.getInTouchMode(); 417 } catch (RemoteException e) { 418 } 419 } 420 return false; 421 } 422 423 /** 424 * We have one child 425 */ 426 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 427 synchronized (this) { 428 if (mView == null) { 429 mView = view; 430 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 431 mFallbackEventHandler.setView(view); 432 mWindowAttributes.copyFrom(attrs); 433 if (mWindowAttributes.packageName == null) { 434 mWindowAttributes.packageName = mBasePackageName; 435 } 436 attrs = mWindowAttributes; 437 // Keep track of the actual window flags supplied by the client. 438 mClientWindowLayoutFlags = attrs.flags; 439 440 setAccessibilityFocus(null, null); 441 442 if (view instanceof RootViewSurfaceTaker) { 443 mSurfaceHolderCallback = 444 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 445 if (mSurfaceHolderCallback != null) { 446 mSurfaceHolder = new TakenSurfaceHolder(); 447 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 448 } 449 } 450 451 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 452 mTranslator = compatibilityInfo.getTranslator(); 453 mDisplayAdjustments.setActivityToken(attrs.token); 454 455 // If the application owns the surface, don't enable hardware acceleration 456 if (mSurfaceHolder == null) { 457 enableHardwareAcceleration(attrs); 458 } 459 460 boolean restore = false; 461 if (mTranslator != null) { 462 mSurface.setCompatibilityTranslator(mTranslator); 463 restore = true; 464 attrs.backup(); 465 mTranslator.translateWindowLayout(attrs); 466 } 467 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 468 469 if (!compatibilityInfo.supportsScreen()) { 470 attrs.flags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 471 mLastInCompatMode = true; 472 } 473 474 mSoftInputMode = attrs.softInputMode; 475 mWindowAttributesChanged = true; 476 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 477 mAttachInfo.mRootView = view; 478 mAttachInfo.mScalingRequired = mTranslator != null; 479 mAttachInfo.mApplicationScale = 480 mTranslator == null ? 1.0f : mTranslator.applicationScale; 481 if (panelParentView != null) { 482 mAttachInfo.mPanelParentWindowToken 483 = panelParentView.getApplicationWindowToken(); 484 } 485 mAdded = true; 486 int res; /* = WindowManagerImpl.ADD_OKAY; */ 487 488 // Schedule the first layout -before- adding to the window 489 // manager, to make sure we do the relayout before receiving 490 // any other events from the system. 491 requestLayout(); 492 if ((mWindowAttributes.inputFeatures 493 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 494 mInputChannel = new InputChannel(); 495 } 496 try { 497 mOrigWindowType = mWindowAttributes.type; 498 mAttachInfo.mRecomputeGlobalAttributes = true; 499 collectViewAttributes(); 500 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 501 getHostVisibility(), mDisplay.getDisplayId(), 502 mAttachInfo.mContentInsets, mInputChannel); 503 } catch (RemoteException e) { 504 mAdded = false; 505 mView = null; 506 mAttachInfo.mRootView = null; 507 mInputChannel = null; 508 mFallbackEventHandler.setView(null); 509 unscheduleTraversals(); 510 setAccessibilityFocus(null, null); 511 throw new RuntimeException("Adding window failed", e); 512 } finally { 513 if (restore) { 514 attrs.restore(); 515 } 516 } 517 518 if (mTranslator != null) { 519 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 520 } 521 mPendingOverscanInsets.set(0, 0, 0, 0); 522 mPendingContentInsets.set(mAttachInfo.mContentInsets); 523 mPendingVisibleInsets.set(0, 0, 0, 0); 524 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 525 if (res < WindowManagerGlobal.ADD_OKAY) { 526 mAttachInfo.mRootView = null; 527 mAdded = false; 528 mFallbackEventHandler.setView(null); 529 unscheduleTraversals(); 530 setAccessibilityFocus(null, null); 531 switch (res) { 532 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 533 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 534 throw new WindowManager.BadTokenException( 535 "Unable to add window -- token " + attrs.token 536 + " is not valid; is your activity running?"); 537 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 538 throw new WindowManager.BadTokenException( 539 "Unable to add window -- token " + attrs.token 540 + " is not for an application"); 541 case WindowManagerGlobal.ADD_APP_EXITING: 542 throw new WindowManager.BadTokenException( 543 "Unable to add window -- app for token " + attrs.token 544 + " is exiting"); 545 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 546 throw new WindowManager.BadTokenException( 547 "Unable to add window -- window " + mWindow 548 + " has already been added"); 549 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 550 // Silently ignore -- we would have just removed it 551 // right away, anyway. 552 return; 553 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 554 throw new WindowManager.BadTokenException( 555 "Unable to add window " + mWindow + 556 " -- another window of this type already exists"); 557 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 558 throw new WindowManager.BadTokenException( 559 "Unable to add window " + mWindow + 560 " -- permission denied for this window type"); 561 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 562 throw new WindowManager.InvalidDisplayException( 563 "Unable to add window " + mWindow + 564 " -- the specified display can not be found"); 565 } 566 throw new RuntimeException( 567 "Unable to add window -- unknown error code " + res); 568 } 569 570 if (view instanceof RootViewSurfaceTaker) { 571 mInputQueueCallback = 572 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 573 } 574 if (mInputChannel != null) { 575 if (mInputQueueCallback != null) { 576 mInputQueue = new InputQueue(); 577 mInputQueueCallback.onInputQueueCreated(mInputQueue); 578 } 579 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 580 Looper.myLooper()); 581 } 582 583 view.assignParent(this); 584 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 585 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 586 587 if (mAccessibilityManager.isEnabled()) { 588 mAccessibilityInteractionConnectionManager.ensureConnection(); 589 } 590 591 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 592 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 593 } 594 595 // Set up the input pipeline. 596 CharSequence counterSuffix = attrs.getTitle(); 597 InputStage syntheticInputStage = new SyntheticInputStage(); 598 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticInputStage); 599 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 600 "aq:native-post-ime:" + counterSuffix); 601 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 602 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 603 "aq:ime:" + counterSuffix); 604 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 605 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 606 "aq:native-pre-ime:" + counterSuffix); 607 608 mFirstInputStage = nativePreImeStage; 609 mFirstPostImeInputStage = earlyPostImeStage; 610 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 611 } 612 } 613 } 614 615 /** Whether the window is in local focus mode or not */ 616 private boolean isInLocalFocusMode() { 617 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 618 } 619 620 void destroyHardwareResources() { 621 invalidateDisplayLists(); 622 if (mAttachInfo.mHardwareRenderer != null) { 623 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 624 mAttachInfo.mHardwareRenderer.destroy(false); 625 } 626 } 627 628 void destroyHardwareLayers() { 629 if (mThread != Thread.currentThread()) { 630 if (mAttachInfo.mHardwareRenderer != null && 631 mAttachInfo.mHardwareRenderer.isEnabled()) { 632 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 633 } 634 } else { 635 invalidateDisplayLists(); 636 if (mAttachInfo.mHardwareRenderer != null && 637 mAttachInfo.mHardwareRenderer.isEnabled()) { 638 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 639 } 640 } 641 } 642 643 void pushHardwareLayerUpdate(HardwareLayer layer) { 644 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 645 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 646 } 647 } 648 649 void flushHardwareLayerUpdates() { 650 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled() && 651 mAttachInfo.mHardwareRenderer.validate()) { 652 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 653 } 654 } 655 656 void dispatchFlushHardwareLayerUpdates() { 657 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 658 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 659 } 660 661 public boolean attachFunctor(int functor) { 662 //noinspection SimplifiableIfStatement 663 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 664 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 665 } 666 return false; 667 } 668 669 public void detachFunctor(int functor) { 670 if (mAttachInfo.mHardwareRenderer != null) { 671 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 672 } 673 } 674 675 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 676 mAttachInfo.mHardwareAccelerated = false; 677 mAttachInfo.mHardwareAccelerationRequested = false; 678 679 // Don't enable hardware acceleration when the application is in compatibility mode 680 if (mTranslator != null) return; 681 682 // Try to enable hardware acceleration if requested 683 final boolean hardwareAccelerated = 684 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 685 686 if (hardwareAccelerated) { 687 if (!HardwareRenderer.isAvailable()) { 688 return; 689 } 690 691 // Persistent processes (including the system) should not do 692 // accelerated rendering on low-end devices. In that case, 693 // sRendererDisabled will be set. In addition, the system process 694 // itself should never do accelerated rendering. In that case, both 695 // sRendererDisabled and sSystemRendererDisabled are set. When 696 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 697 // can be used by code on the system process to escape that and enable 698 // HW accelerated drawing. (This is basically for the lock screen.) 699 700 final boolean fakeHwAccelerated = (attrs.privateFlags & 701 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 702 final boolean forceHwAccelerated = (attrs.privateFlags & 703 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 704 705 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 706 && forceHwAccelerated)) { 707 // Don't enable hardware acceleration when we're not on the main thread 708 if (!HardwareRenderer.sSystemRendererDisabled && 709 Looper.getMainLooper() != Looper.myLooper()) { 710 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 711 + "acceleration outside of the main thread, aborting"); 712 return; 713 } 714 715 if (mAttachInfo.mHardwareRenderer != null) { 716 mAttachInfo.mHardwareRenderer.destroy(true); 717 } 718 719 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 720 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 721 if (mAttachInfo.mHardwareRenderer != null) { 722 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 723 mAttachInfo.mHardwareAccelerated = 724 mAttachInfo.mHardwareAccelerationRequested = true; 725 } 726 } else if (fakeHwAccelerated) { 727 // The window had wanted to use hardware acceleration, but this 728 // is not allowed in its process. By setting this flag, it can 729 // still render as if it was accelerated. This is basically for 730 // the preview windows the window manager shows for launching 731 // applications, so they will look more like the app being launched. 732 mAttachInfo.mHardwareAccelerationRequested = true; 733 } 734 } 735 } 736 737 public View getView() { 738 return mView; 739 } 740 741 final WindowLeaked getLocation() { 742 return mLocation; 743 } 744 745 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 746 synchronized (this) { 747 int oldSoftInputMode = mWindowAttributes.softInputMode; 748 // Keep track of the actual window flags supplied by the client. 749 mClientWindowLayoutFlags = attrs.flags; 750 // preserve compatible window flag if exists. 751 int compatibleWindowFlag = 752 mWindowAttributes.flags & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 753 // transfer over system UI visibility values as they carry current state. 754 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 755 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 756 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 757 if (mWindowAttributes.packageName == null) { 758 mWindowAttributes.packageName = mBasePackageName; 759 } 760 mWindowAttributes.flags |= compatibleWindowFlag; 761 762 applyKeepScreenOnFlag(mWindowAttributes); 763 764 if (newView) { 765 mSoftInputMode = attrs.softInputMode; 766 requestLayout(); 767 } 768 // Don't lose the mode we last auto-computed. 769 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 770 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 771 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 772 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 773 | (oldSoftInputMode 774 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 775 } 776 mWindowAttributesChanged = true; 777 scheduleTraversals(); 778 } 779 } 780 781 void handleAppVisibility(boolean visible) { 782 if (mAppVisible != visible) { 783 mAppVisible = visible; 784 scheduleTraversals(); 785 } 786 } 787 788 void handleGetNewSurface() { 789 mNewSurfaceNeeded = true; 790 mFullRedrawNeeded = true; 791 scheduleTraversals(); 792 } 793 794 void handleScreenStateChange(boolean on) { 795 if (on != mAttachInfo.mScreenOn) { 796 mAttachInfo.mScreenOn = on; 797 if (mView != null) { 798 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 799 } 800 if (on) { 801 mFullRedrawNeeded = true; 802 scheduleTraversals(); 803 } 804 } 805 } 806 807 @Override 808 public void requestFitSystemWindows() { 809 checkThread(); 810 mFitSystemWindowsRequested = true; 811 scheduleTraversals(); 812 } 813 814 @Override 815 public void requestLayout() { 816 if (!mHandlingLayoutInLayoutRequest) { 817 checkThread(); 818 mLayoutRequested = true; 819 scheduleTraversals(); 820 } 821 } 822 823 @Override 824 public boolean isLayoutRequested() { 825 return mLayoutRequested; 826 } 827 828 void invalidate() { 829 mDirty.set(0, 0, mWidth, mHeight); 830 scheduleTraversals(); 831 } 832 833 void invalidateWorld(View view) { 834 view.invalidate(); 835 if (view instanceof ViewGroup) { 836 ViewGroup parent = (ViewGroup) view; 837 for (int i = 0; i < parent.getChildCount(); i++) { 838 invalidateWorld(parent.getChildAt(i)); 839 } 840 } 841 } 842 843 @Override 844 public void invalidateChild(View child, Rect dirty) { 845 invalidateChildInParent(null, dirty); 846 } 847 848 @Override 849 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 850 checkThread(); 851 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 852 853 if (dirty == null) { 854 invalidate(); 855 return null; 856 } else if (dirty.isEmpty() && !mIsAnimating) { 857 return null; 858 } 859 860 if (mCurScrollY != 0 || mTranslator != null) { 861 mTempRect.set(dirty); 862 dirty = mTempRect; 863 if (mCurScrollY != 0) { 864 dirty.offset(0, -mCurScrollY); 865 } 866 if (mTranslator != null) { 867 mTranslator.translateRectInAppWindowToScreen(dirty); 868 } 869 if (mAttachInfo.mScalingRequired) { 870 dirty.inset(-1, -1); 871 } 872 } 873 874 final Rect localDirty = mDirty; 875 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 876 mAttachInfo.mSetIgnoreDirtyState = true; 877 mAttachInfo.mIgnoreDirtyState = true; 878 } 879 880 // Add the new dirty rect to the current one 881 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 882 // Intersect with the bounds of the window to skip 883 // updates that lie outside of the visible region 884 final float appScale = mAttachInfo.mApplicationScale; 885 final boolean intersected = localDirty.intersect(0, 0, 886 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 887 if (!intersected) { 888 localDirty.setEmpty(); 889 } 890 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 891 scheduleTraversals(); 892 } 893 894 return null; 895 } 896 897 void setStopped(boolean stopped) { 898 if (mStopped != stopped) { 899 mStopped = stopped; 900 if (!stopped) { 901 scheduleTraversals(); 902 } 903 } 904 } 905 906 @Override 907 public ViewParent getParent() { 908 return null; 909 } 910 911 @Override 912 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 913 if (child != mView) { 914 throw new RuntimeException("child is not mine, honest!"); 915 } 916 // Note: don't apply scroll offset, because we want to know its 917 // visibility in the virtual canvas being given to the view hierarchy. 918 return r.intersect(0, 0, mWidth, mHeight); 919 } 920 921 @Override 922 public void bringChildToFront(View child) { 923 } 924 925 int getHostVisibility() { 926 return mAppVisible ? mView.getVisibility() : View.GONE; 927 } 928 929 void disposeResizeBuffer() { 930 if (mResizeBuffer != null && mAttachInfo.mHardwareRenderer != null) { 931 mAttachInfo.mHardwareRenderer.safelyRun(new Runnable() { 932 @Override 933 public void run() { 934 mResizeBuffer.destroy(); 935 mResizeBuffer = null; 936 } 937 }); 938 } 939 } 940 941 /** 942 * Add LayoutTransition to the list of transitions to be started in the next traversal. 943 * This list will be cleared after the transitions on the list are start()'ed. These 944 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 945 * happens during the layout phase of traversal, which we want to complete before any of the 946 * animations are started (because those animations may side-effect properties that layout 947 * depends upon, like the bounding rectangles of the affected views). So we add the transition 948 * to the list and it is started just prior to starting the drawing phase of traversal. 949 * 950 * @param transition The LayoutTransition to be started on the next traversal. 951 * 952 * @hide 953 */ 954 public void requestTransitionStart(LayoutTransition transition) { 955 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 956 if (mPendingTransitions == null) { 957 mPendingTransitions = new ArrayList<LayoutTransition>(); 958 } 959 mPendingTransitions.add(transition); 960 } 961 } 962 963 void scheduleTraversals() { 964 if (!mTraversalScheduled) { 965 mTraversalScheduled = true; 966 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 967 mChoreographer.postCallback( 968 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 969 scheduleConsumeBatchedInput(); 970 } 971 } 972 973 void unscheduleTraversals() { 974 if (mTraversalScheduled) { 975 mTraversalScheduled = false; 976 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 977 mChoreographer.removeCallbacks( 978 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 979 } 980 } 981 982 void doTraversal() { 983 if (mTraversalScheduled) { 984 mTraversalScheduled = false; 985 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 986 987 if (mProfile) { 988 Debug.startMethodTracing("ViewAncestor"); 989 } 990 991 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 992 try { 993 performTraversals(); 994 } finally { 995 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 996 } 997 998 if (mProfile) { 999 Debug.stopMethodTracing(); 1000 mProfile = false; 1001 } 1002 } 1003 } 1004 1005 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1006 // Update window's global keep screen on flag: if a view has requested 1007 // that the screen be kept on, then it is always set; otherwise, it is 1008 // set to whatever the client last requested for the global state. 1009 if (mAttachInfo.mKeepScreenOn) { 1010 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1011 } else { 1012 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1013 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1014 } 1015 } 1016 1017 private boolean collectViewAttributes() { 1018 final View.AttachInfo attachInfo = mAttachInfo; 1019 if (attachInfo.mRecomputeGlobalAttributes) { 1020 //Log.i(TAG, "Computing view hierarchy attributes!"); 1021 attachInfo.mRecomputeGlobalAttributes = false; 1022 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1023 attachInfo.mKeepScreenOn = false; 1024 attachInfo.mSystemUiVisibility = 0; 1025 attachInfo.mHasSystemUiListeners = false; 1026 mView.dispatchCollectViewAttributes(attachInfo, 0); 1027 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1028 WindowManager.LayoutParams params = mWindowAttributes; 1029 if (attachInfo.mKeepScreenOn != oldScreenOn 1030 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1031 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1032 applyKeepScreenOnFlag(params); 1033 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1034 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1035 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1036 return true; 1037 } 1038 } 1039 return false; 1040 } 1041 1042 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1043 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1044 int childWidthMeasureSpec; 1045 int childHeightMeasureSpec; 1046 boolean windowSizeMayChange = false; 1047 1048 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1049 "Measuring " + host + " in display " + desiredWindowWidth 1050 + "x" + desiredWindowHeight + "..."); 1051 1052 boolean goodMeasure = false; 1053 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1054 // On large screens, we don't want to allow dialogs to just 1055 // stretch to fill the entire width of the screen to display 1056 // one line of text. First try doing the layout at a smaller 1057 // size to see if it will fit. 1058 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1059 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1060 int baseSize = 0; 1061 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1062 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1063 } 1064 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1065 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1066 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1067 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1068 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1069 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1070 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1071 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1072 goodMeasure = true; 1073 } else { 1074 // Didn't fit in that size... try expanding a bit. 1075 baseSize = (baseSize+desiredWindowWidth)/2; 1076 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1077 + baseSize); 1078 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 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 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1084 goodMeasure = true; 1085 } 1086 } 1087 } 1088 } 1089 1090 if (!goodMeasure) { 1091 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1092 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1093 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1094 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1095 windowSizeMayChange = true; 1096 } 1097 } 1098 1099 if (DBG) { 1100 System.out.println("======================================"); 1101 System.out.println("performTraversals -- after measure"); 1102 host.debug(); 1103 } 1104 1105 return windowSizeMayChange; 1106 } 1107 1108 private void performTraversals() { 1109 // cache mView since it is used so much below... 1110 final View host = mView; 1111 1112 if (DBG) { 1113 System.out.println("======================================"); 1114 System.out.println("performTraversals"); 1115 host.debug(); 1116 } 1117 1118 if (host == null || !mAdded) 1119 return; 1120 1121 mIsInTraversal = true; 1122 mWillDrawSoon = true; 1123 boolean windowSizeMayChange = false; 1124 boolean newSurface = false; 1125 boolean surfaceChanged = false; 1126 WindowManager.LayoutParams lp = mWindowAttributes; 1127 1128 int desiredWindowWidth; 1129 int desiredWindowHeight; 1130 1131 final View.AttachInfo attachInfo = mAttachInfo; 1132 1133 final int viewVisibility = getHostVisibility(); 1134 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1135 || mNewSurfaceNeeded; 1136 1137 WindowManager.LayoutParams params = null; 1138 if (mWindowAttributesChanged) { 1139 mWindowAttributesChanged = false; 1140 surfaceChanged = true; 1141 params = lp; 1142 } 1143 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1144 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1145 params = lp; 1146 mFullRedrawNeeded = true; 1147 mLayoutRequested = true; 1148 if (mLastInCompatMode) { 1149 params.flags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1150 mLastInCompatMode = false; 1151 } else { 1152 params.flags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1153 mLastInCompatMode = true; 1154 } 1155 } 1156 1157 mWindowAttributesChangesFlag = 0; 1158 1159 Rect frame = mWinFrame; 1160 if (mFirst) { 1161 mFullRedrawNeeded = true; 1162 mLayoutRequested = true; 1163 1164 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1165 // NOTE -- system code, won't try to do compat mode. 1166 Point size = new Point(); 1167 mDisplay.getRealSize(size); 1168 desiredWindowWidth = size.x; 1169 desiredWindowHeight = size.y; 1170 } else { 1171 DisplayMetrics packageMetrics = 1172 mView.getContext().getResources().getDisplayMetrics(); 1173 desiredWindowWidth = packageMetrics.widthPixels; 1174 desiredWindowHeight = packageMetrics.heightPixels; 1175 } 1176 1177 // For the very first time, tell the view hierarchy that it 1178 // is attached to the window. Note that at this point the surface 1179 // object is not initialized to its backing store, but soon it 1180 // will be (assuming the window is visible). 1181 attachInfo.mSurface = mSurface; 1182 // We used to use the following condition to choose 32 bits drawing caches: 1183 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1184 // However, windows are now always 32 bits by default, so choose 32 bits 1185 attachInfo.mUse32BitDrawingCache = true; 1186 attachInfo.mHasWindowFocus = false; 1187 attachInfo.mWindowVisibility = viewVisibility; 1188 attachInfo.mRecomputeGlobalAttributes = false; 1189 viewVisibilityChanged = false; 1190 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1191 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1192 // Set the layout direction if it has not been set before (inherit is the default) 1193 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1194 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1195 } 1196 host.dispatchAttachedToWindow(attachInfo, 0); 1197 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1198 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1199 host.fitSystemWindows(mFitSystemWindowsInsets); 1200 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1201 1202 } else { 1203 desiredWindowWidth = frame.width(); 1204 desiredWindowHeight = frame.height(); 1205 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1206 if (DEBUG_ORIENTATION) Log.v(TAG, 1207 "View " + host + " resized to: " + frame); 1208 mFullRedrawNeeded = true; 1209 mLayoutRequested = true; 1210 windowSizeMayChange = true; 1211 } 1212 } 1213 1214 if (viewVisibilityChanged) { 1215 attachInfo.mWindowVisibility = viewVisibility; 1216 host.dispatchWindowVisibilityChanged(viewVisibility); 1217 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1218 destroyHardwareResources(); 1219 } 1220 if (viewVisibility == View.GONE) { 1221 // After making a window gone, we will count it as being 1222 // shown for the first time the next time it gets focus. 1223 mHasHadWindowFocus = false; 1224 } 1225 } 1226 1227 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1228 getRunQueue().executeActions(attachInfo.mHandler); 1229 1230 boolean insetsChanged = false; 1231 1232 boolean layoutRequested = mLayoutRequested && !mStopped; 1233 if (layoutRequested) { 1234 1235 final Resources res = mView.getContext().getResources(); 1236 1237 if (mFirst) { 1238 // make sure touch mode code executes by setting cached value 1239 // to opposite of the added touch mode. 1240 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1241 ensureTouchModeLocally(mAddedTouchMode); 1242 } else { 1243 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1244 insetsChanged = true; 1245 } 1246 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1247 insetsChanged = true; 1248 } 1249 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1250 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1251 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1252 + mAttachInfo.mVisibleInsets); 1253 } 1254 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1255 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1256 windowSizeMayChange = true; 1257 1258 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1259 // NOTE -- system code, won't try to do compat mode. 1260 Point size = new Point(); 1261 mDisplay.getRealSize(size); 1262 desiredWindowWidth = size.x; 1263 desiredWindowHeight = size.y; 1264 } else { 1265 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1266 desiredWindowWidth = packageMetrics.widthPixels; 1267 desiredWindowHeight = packageMetrics.heightPixels; 1268 } 1269 } 1270 } 1271 1272 // Ask host how big it wants to be 1273 windowSizeMayChange |= measureHierarchy(host, lp, res, 1274 desiredWindowWidth, desiredWindowHeight); 1275 } 1276 1277 if (collectViewAttributes()) { 1278 params = lp; 1279 } 1280 if (attachInfo.mForceReportNewAttributes) { 1281 attachInfo.mForceReportNewAttributes = false; 1282 params = lp; 1283 } 1284 1285 if (mFirst || attachInfo.mViewVisibilityChanged) { 1286 attachInfo.mViewVisibilityChanged = false; 1287 int resizeMode = mSoftInputMode & 1288 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1289 // If we are in auto resize mode, then we need to determine 1290 // what mode to use now. 1291 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1292 final int N = attachInfo.mScrollContainers.size(); 1293 for (int i=0; i<N; i++) { 1294 if (attachInfo.mScrollContainers.get(i).isShown()) { 1295 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1296 } 1297 } 1298 if (resizeMode == 0) { 1299 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1300 } 1301 if ((lp.softInputMode & 1302 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1303 lp.softInputMode = (lp.softInputMode & 1304 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1305 resizeMode; 1306 params = lp; 1307 } 1308 } 1309 } 1310 1311 if (params != null) { 1312 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1313 if (!PixelFormat.formatHasAlpha(params.format)) { 1314 params.format = PixelFormat.TRANSLUCENT; 1315 } 1316 } 1317 mAttachInfo.mOverscanRequested = (params.flags 1318 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1319 } 1320 1321 if (mFitSystemWindowsRequested) { 1322 mFitSystemWindowsRequested = false; 1323 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1324 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1325 host.fitSystemWindows(mFitSystemWindowsInsets); 1326 if (mLayoutRequested) { 1327 // Short-circuit catching a new layout request here, so 1328 // we don't need to go through two layout passes when things 1329 // change due to fitting system windows, which can happen a lot. 1330 windowSizeMayChange |= measureHierarchy(host, lp, 1331 mView.getContext().getResources(), 1332 desiredWindowWidth, desiredWindowHeight); 1333 } 1334 } 1335 1336 if (layoutRequested) { 1337 // Clear this now, so that if anything requests a layout in the 1338 // rest of this function we will catch it and re-run a full 1339 // layout pass. 1340 mLayoutRequested = false; 1341 } 1342 1343 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1344 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1345 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1346 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1347 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1348 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1349 1350 // Determine whether to compute insets. 1351 // If there are no inset listeners remaining then we may still need to compute 1352 // insets in case the old insets were non-empty and must be reset. 1353 final boolean computesInternalInsets = 1354 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1355 || attachInfo.mHasNonEmptyGivenInternalInsets; 1356 1357 boolean insetsPending = false; 1358 int relayoutResult = 0; 1359 1360 if (mFirst || windowShouldResize || insetsChanged || 1361 viewVisibilityChanged || params != null) { 1362 1363 if (viewVisibility == View.VISIBLE) { 1364 // If this window is giving internal insets to the window 1365 // manager, and it is being added or changing its visibility, 1366 // then we want to first give the window manager "fake" 1367 // insets to cause it to effectively ignore the content of 1368 // the window during layout. This avoids it briefly causing 1369 // other windows to resize/move based on the raw frame of the 1370 // window, waiting until we can finish laying out this window 1371 // and get back to the window manager with the ultimately 1372 // computed insets. 1373 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1374 } 1375 1376 if (mSurfaceHolder != null) { 1377 mSurfaceHolder.mSurfaceLock.lock(); 1378 mDrawingAllowed = true; 1379 } 1380 1381 boolean hwInitialized = false; 1382 boolean contentInsetsChanged = false; 1383 boolean hadSurface = mSurface.isValid(); 1384 1385 try { 1386 if (DEBUG_LAYOUT) { 1387 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1388 host.getMeasuredHeight() + ", params=" + params); 1389 } 1390 1391 final int surfaceGenerationId = mSurface.getGenerationId(); 1392 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1393 if (!mDrawDuringWindowsAnimating) { 1394 mWindowsAnimating |= 1395 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0; 1396 } 1397 1398 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1399 + " overscan=" + mPendingOverscanInsets.toShortString() 1400 + " content=" + mPendingContentInsets.toShortString() 1401 + " visible=" + mPendingVisibleInsets.toShortString() 1402 + " surface=" + mSurface); 1403 1404 if (mPendingConfiguration.seq != 0) { 1405 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1406 + mPendingConfiguration); 1407 updateConfiguration(mPendingConfiguration, !mFirst); 1408 mPendingConfiguration.seq = 0; 1409 } 1410 1411 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1412 mAttachInfo.mOverscanInsets); 1413 contentInsetsChanged = !mPendingContentInsets.equals( 1414 mAttachInfo.mContentInsets); 1415 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1416 mAttachInfo.mVisibleInsets); 1417 if (contentInsetsChanged) { 1418 if (mWidth > 0 && mHeight > 0 && lp != null && 1419 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1420 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1421 mSurface != null && mSurface.isValid() && 1422 !mAttachInfo.mTurnOffWindowResizeAnim && 1423 mAttachInfo.mHardwareRenderer != null && 1424 mAttachInfo.mHardwareRenderer.isEnabled() && 1425 mAttachInfo.mHardwareRenderer.validate() && 1426 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1427 1428 disposeResizeBuffer(); 1429 1430 boolean completed = false; 1431 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1432 HardwareCanvas layerCanvas = null; 1433 try { 1434 if (mResizeBuffer == null) { 1435 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1436 mWidth, mHeight, false); 1437 } else if (mResizeBuffer.getWidth() != mWidth || 1438 mResizeBuffer.getHeight() != mHeight) { 1439 mResizeBuffer.resize(mWidth, mHeight); 1440 } 1441 // TODO: should handle create/resize failure 1442 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1443 final int restoreCount = layerCanvas.save(); 1444 1445 int yoff; 1446 final boolean scrolling = mScroller != null 1447 && mScroller.computeScrollOffset(); 1448 if (scrolling) { 1449 yoff = mScroller.getCurrY(); 1450 mScroller.abortAnimation(); 1451 } else { 1452 yoff = mScrollY; 1453 } 1454 1455 layerCanvas.translate(0, -yoff); 1456 if (mTranslator != null) { 1457 mTranslator.translateCanvas(layerCanvas); 1458 } 1459 1460 DisplayList displayList = mView.mDisplayList; 1461 if (displayList != null && displayList.isValid()) { 1462 layerCanvas.drawDisplayList(displayList, null, 1463 DisplayList.FLAG_CLIP_CHILDREN); 1464 } else { 1465 mView.draw(layerCanvas); 1466 } 1467 1468 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1469 1470 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1471 mResizeBufferDuration = mView.getResources().getInteger( 1472 com.android.internal.R.integer.config_mediumAnimTime); 1473 completed = true; 1474 1475 layerCanvas.restoreToCount(restoreCount); 1476 } catch (OutOfMemoryError e) { 1477 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1478 } finally { 1479 if (mResizeBuffer != null) { 1480 mResizeBuffer.end(hwRendererCanvas); 1481 if (!completed) { 1482 disposeResizeBuffer(); 1483 } 1484 } 1485 } 1486 } 1487 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1488 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1489 + mAttachInfo.mContentInsets); 1490 } 1491 if (overscanInsetsChanged) { 1492 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1493 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1494 + mAttachInfo.mOverscanInsets); 1495 // Need to relayout with content insets. 1496 contentInsetsChanged = true; 1497 } 1498 if (contentInsetsChanged || mLastSystemUiVisibility != 1499 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1500 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1501 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1502 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1503 mFitSystemWindowsRequested = false; 1504 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1505 host.fitSystemWindows(mFitSystemWindowsInsets); 1506 } 1507 if (visibleInsetsChanged) { 1508 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1509 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1510 + mAttachInfo.mVisibleInsets); 1511 } 1512 1513 if (!hadSurface) { 1514 if (mSurface.isValid()) { 1515 // If we are creating a new surface, then we need to 1516 // completely redraw it. Also, when we get to the 1517 // point of drawing it we will hold off and schedule 1518 // a new traversal instead. This is so we can tell the 1519 // window manager about all of the windows being displayed 1520 // before actually drawing them, so it can display then 1521 // all at once. 1522 newSurface = true; 1523 mFullRedrawNeeded = true; 1524 mPreviousTransparentRegion.setEmpty(); 1525 1526 if (mAttachInfo.mHardwareRenderer != null) { 1527 try { 1528 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1529 mHolder.getSurface()); 1530 } catch (OutOfResourcesException e) { 1531 handleOutOfResourcesException(e); 1532 return; 1533 } 1534 } 1535 } 1536 } else if (!mSurface.isValid()) { 1537 // If the surface has been removed, then reset the scroll 1538 // positions. 1539 if (mLastScrolledFocus != null) { 1540 mLastScrolledFocus.clear(); 1541 } 1542 mScrollY = mCurScrollY = 0; 1543 if (mScroller != null) { 1544 mScroller.abortAnimation(); 1545 } 1546 disposeResizeBuffer(); 1547 // Our surface is gone 1548 if (mAttachInfo.mHardwareRenderer != null && 1549 mAttachInfo.mHardwareRenderer.isEnabled()) { 1550 mAttachInfo.mHardwareRenderer.destroy(true); 1551 } 1552 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1553 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1554 mFullRedrawNeeded = true; 1555 try { 1556 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1557 } catch (OutOfResourcesException e) { 1558 handleOutOfResourcesException(e); 1559 return; 1560 } 1561 } 1562 } catch (RemoteException e) { 1563 } 1564 1565 if (DEBUG_ORIENTATION) Log.v( 1566 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1567 1568 attachInfo.mWindowLeft = frame.left; 1569 attachInfo.mWindowTop = frame.top; 1570 1571 // !!FIXME!! This next section handles the case where we did not get the 1572 // window size we asked for. We should avoid this by getting a maximum size from 1573 // the window session beforehand. 1574 if (mWidth != frame.width() || mHeight != frame.height()) { 1575 mWidth = frame.width(); 1576 mHeight = frame.height(); 1577 } 1578 1579 if (mSurfaceHolder != null) { 1580 // The app owns the surface; tell it about what is going on. 1581 if (mSurface.isValid()) { 1582 // XXX .copyFrom() doesn't work! 1583 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1584 mSurfaceHolder.mSurface = mSurface; 1585 } 1586 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1587 mSurfaceHolder.mSurfaceLock.unlock(); 1588 if (mSurface.isValid()) { 1589 if (!hadSurface) { 1590 mSurfaceHolder.ungetCallbacks(); 1591 1592 mIsCreating = true; 1593 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1594 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1595 if (callbacks != null) { 1596 for (SurfaceHolder.Callback c : callbacks) { 1597 c.surfaceCreated(mSurfaceHolder); 1598 } 1599 } 1600 surfaceChanged = true; 1601 } 1602 if (surfaceChanged) { 1603 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1604 lp.format, mWidth, mHeight); 1605 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1606 if (callbacks != null) { 1607 for (SurfaceHolder.Callback c : callbacks) { 1608 c.surfaceChanged(mSurfaceHolder, lp.format, 1609 mWidth, mHeight); 1610 } 1611 } 1612 } 1613 mIsCreating = false; 1614 } else if (hadSurface) { 1615 mSurfaceHolder.ungetCallbacks(); 1616 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1617 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1618 if (callbacks != null) { 1619 for (SurfaceHolder.Callback c : callbacks) { 1620 c.surfaceDestroyed(mSurfaceHolder); 1621 } 1622 } 1623 mSurfaceHolder.mSurfaceLock.lock(); 1624 try { 1625 mSurfaceHolder.mSurface = new Surface(); 1626 } finally { 1627 mSurfaceHolder.mSurfaceLock.unlock(); 1628 } 1629 } 1630 } 1631 1632 if (mAttachInfo.mHardwareRenderer != null && 1633 mAttachInfo.mHardwareRenderer.isEnabled()) { 1634 if (hwInitialized || 1635 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1636 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1637 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1638 if (!hwInitialized) { 1639 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1640 mFullRedrawNeeded = true; 1641 } 1642 } 1643 } 1644 1645 if (!mStopped) { 1646 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1647 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1648 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1649 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1650 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1651 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1652 1653 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1654 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1655 + " mHeight=" + mHeight 1656 + " measuredHeight=" + host.getMeasuredHeight() 1657 + " coveredInsetsChanged=" + contentInsetsChanged); 1658 1659 // Ask host how big it wants to be 1660 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1661 1662 // Implementation of weights from WindowManager.LayoutParams 1663 // We just grow the dimensions as needed and re-measure if 1664 // needs be 1665 int width = host.getMeasuredWidth(); 1666 int height = host.getMeasuredHeight(); 1667 boolean measureAgain = false; 1668 1669 if (lp.horizontalWeight > 0.0f) { 1670 width += (int) ((mWidth - width) * lp.horizontalWeight); 1671 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1672 MeasureSpec.EXACTLY); 1673 measureAgain = true; 1674 } 1675 if (lp.verticalWeight > 0.0f) { 1676 height += (int) ((mHeight - height) * lp.verticalWeight); 1677 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1678 MeasureSpec.EXACTLY); 1679 measureAgain = true; 1680 } 1681 1682 if (measureAgain) { 1683 if (DEBUG_LAYOUT) Log.v(TAG, 1684 "And hey let's measure once more: width=" + width 1685 + " height=" + height); 1686 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1687 } 1688 1689 layoutRequested = true; 1690 } 1691 } 1692 } else { 1693 // Not the first pass and no window/insets/visibility change but the window 1694 // may have moved and we need check that and if so to update the left and right 1695 // in the attach info. We translate only the window frame since on window move 1696 // the window manager tells us only for the new frame but the insets are the 1697 // same and we do not want to translate them more than once. 1698 1699 // TODO: Well, we are checking whether the frame has changed similarly 1700 // to how this is done for the insets. This is however incorrect since 1701 // the insets and the frame are translated. For example, the old frame 1702 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1703 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1704 // true since we are comparing a not translated value to a translated one. 1705 // This scenario is rare but we may want to fix that. 1706 1707 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1708 || attachInfo.mWindowTop != frame.top); 1709 if (windowMoved) { 1710 if (mTranslator != null) { 1711 mTranslator.translateRectInScreenToAppWinFrame(frame); 1712 } 1713 attachInfo.mWindowLeft = frame.left; 1714 attachInfo.mWindowTop = frame.top; 1715 } 1716 } 1717 1718 final boolean didLayout = layoutRequested && !mStopped; 1719 boolean triggerGlobalLayoutListener = didLayout 1720 || attachInfo.mRecomputeGlobalAttributes; 1721 if (didLayout) { 1722 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1723 1724 // By this point all views have been sized and positioned 1725 // We can compute the transparent area 1726 1727 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1728 // start out transparent 1729 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1730 host.getLocationInWindow(mTmpLocation); 1731 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1732 mTmpLocation[0] + host.mRight - host.mLeft, 1733 mTmpLocation[1] + host.mBottom - host.mTop); 1734 1735 host.gatherTransparentRegion(mTransparentRegion); 1736 if (mTranslator != null) { 1737 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1738 } 1739 1740 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1741 mPreviousTransparentRegion.set(mTransparentRegion); 1742 mFullRedrawNeeded = true; 1743 // reconfigure window manager 1744 try { 1745 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1746 } catch (RemoteException e) { 1747 } 1748 } 1749 } 1750 1751 if (DBG) { 1752 System.out.println("======================================"); 1753 System.out.println("performTraversals -- after setFrame"); 1754 host.debug(); 1755 } 1756 } 1757 1758 if (triggerGlobalLayoutListener) { 1759 attachInfo.mRecomputeGlobalAttributes = false; 1760 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1761 } 1762 1763 if (computesInternalInsets) { 1764 // Clear the original insets. 1765 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1766 insets.reset(); 1767 1768 // Compute new insets in place. 1769 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1770 attachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1771 1772 // Tell the window manager. 1773 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1774 mLastGivenInsets.set(insets); 1775 1776 // Translate insets to screen coordinates if needed. 1777 final Rect contentInsets; 1778 final Rect visibleInsets; 1779 final Region touchableRegion; 1780 if (mTranslator != null) { 1781 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1782 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1783 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1784 } else { 1785 contentInsets = insets.contentInsets; 1786 visibleInsets = insets.visibleInsets; 1787 touchableRegion = insets.touchableRegion; 1788 } 1789 1790 try { 1791 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1792 contentInsets, visibleInsets, touchableRegion); 1793 } catch (RemoteException e) { 1794 } 1795 } 1796 } 1797 1798 boolean skipDraw = false; 1799 1800 if (mFirst) { 1801 // handle first focus request 1802 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1803 + mView.hasFocus()); 1804 if (mView != null) { 1805 if (!mView.hasFocus()) { 1806 mView.requestFocus(View.FOCUS_FORWARD); 1807 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1808 + mView.findFocus()); 1809 } else { 1810 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1811 + mView.findFocus()); 1812 } 1813 } 1814 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1815 // The first time we relayout the window, if the system is 1816 // doing window animations, we want to hold of on any future 1817 // draws until the animation is done. 1818 mWindowsAnimating = true; 1819 } 1820 } else if (mWindowsAnimating) { 1821 skipDraw = true; 1822 } 1823 1824 mFirst = false; 1825 mWillDrawSoon = false; 1826 mNewSurfaceNeeded = false; 1827 mViewVisibility = viewVisibility; 1828 1829 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1830 final boolean imTarget = WindowManager.LayoutParams 1831 .mayUseInputMethod(mWindowAttributes.flags); 1832 if (imTarget != mLastWasImTarget) { 1833 mLastWasImTarget = imTarget; 1834 InputMethodManager imm = InputMethodManager.peekInstance(); 1835 if (imm != null && imTarget) { 1836 imm.startGettingWindowFocus(mView); 1837 imm.onWindowFocus(mView, mView.findFocus(), 1838 mWindowAttributes.softInputMode, 1839 !mHasHadWindowFocus, mWindowAttributes.flags); 1840 } 1841 } 1842 } 1843 1844 // Remember if we must report the next draw. 1845 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1846 mReportNextDraw = true; 1847 } 1848 1849 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1850 viewVisibility != View.VISIBLE; 1851 1852 if (!cancelDraw && !newSurface) { 1853 if (!skipDraw || mReportNextDraw) { 1854 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1855 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1856 mPendingTransitions.get(i).startChangingAnimations(); 1857 } 1858 mPendingTransitions.clear(); 1859 } 1860 1861 performDraw(); 1862 } 1863 } else { 1864 if (viewVisibility == View.VISIBLE) { 1865 // Try again 1866 scheduleTraversals(); 1867 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1868 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1869 mPendingTransitions.get(i).endChangingAnimations(); 1870 } 1871 mPendingTransitions.clear(); 1872 } 1873 } 1874 1875 mIsInTraversal = false; 1876 } 1877 1878 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1879 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1880 try { 1881 if (!mWindowSession.outOfMemory(mWindow) && 1882 Process.myUid() != Process.SYSTEM_UID) { 1883 Slog.w(TAG, "No processes killed for memory; killing self"); 1884 Process.killProcess(Process.myPid()); 1885 } 1886 } catch (RemoteException ex) { 1887 } 1888 mLayoutRequested = true; // ask wm for a new surface next time. 1889 } 1890 1891 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1892 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1893 try { 1894 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1895 } finally { 1896 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1897 } 1898 } 1899 1900 /** 1901 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1902 * is currently undergoing a layout pass. 1903 * 1904 * @return whether the view hierarchy is currently undergoing a layout pass 1905 */ 1906 boolean isInLayout() { 1907 return mInLayout; 1908 } 1909 1910 /** 1911 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1912 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1913 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1914 * all children in that container hierarchy are measured and laid out at the end of the layout 1915 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1916 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1917 * we check all of those views to see if any still have pending layout requests, which 1918 * indicates that they were not correctly handled by their container hierarchy. If that is 1919 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1920 * to blank containers, and force a second request/measure/layout pass in this frame. If 1921 * more requestLayout() calls are received during that second layout pass, we post those 1922 * requests to the next frame to avoid possible infinite loops. 1923 * 1924 * <p>The return value from this method indicates whether the request should proceed 1925 * (if it is a request during the first layout pass) or should be skipped and posted to the 1926 * next frame (if it is a request during the second layout pass).</p> 1927 * 1928 * @param view the view that requested the layout. 1929 * 1930 * @return true if request should proceed, false otherwise. 1931 */ 1932 boolean requestLayoutDuringLayout(final View view) { 1933 if (view.mParent == null || view.mAttachInfo == null) { 1934 // Would not normally trigger another layout, so just let it pass through as usual 1935 return true; 1936 } 1937 if (!mLayoutRequesters.contains(view)) { 1938 mLayoutRequesters.add(view); 1939 } 1940 if (!mHandlingLayoutInLayoutRequest) { 1941 // Let the request proceed normally; it will be processed in a second layout pass 1942 // if necessary 1943 return true; 1944 } else { 1945 // Don't let the request proceed during the second layout pass. 1946 // It will post to the next frame instead. 1947 return false; 1948 } 1949 } 1950 1951 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1952 int desiredWindowHeight) { 1953 mLayoutRequested = false; 1954 mScrollMayChange = true; 1955 mInLayout = true; 1956 1957 final View host = mView; 1958 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1959 Log.v(TAG, "Laying out " + host + " to (" + 1960 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1961 } 1962 1963 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1964 try { 1965 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1966 1967 mInLayout = false; 1968 int numViewsRequestingLayout = mLayoutRequesters.size(); 1969 if (numViewsRequestingLayout > 0) { 1970 // requestLayout() was called during layout. 1971 // If no layout-request flags are set on the requesting views, there is no problem. 1972 // If some requests are still pending, then we need to clear those flags and do 1973 // a full request/measure/layout pass to handle this situation. 1974 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1975 false); 1976 if (validLayoutRequesters != null) { 1977 // Set this flag to indicate that any further requests are happening during 1978 // the second pass, which may result in posting those requests to the next 1979 // frame instead 1980 mHandlingLayoutInLayoutRequest = true; 1981 1982 // Process fresh layout requests, then measure and layout 1983 int numValidRequests = validLayoutRequesters.size(); 1984 for (int i = 0; i < numValidRequests; ++i) { 1985 final View view = validLayoutRequesters.get(i); 1986 Log.w("View", "requestLayout() improperly called by " + view + 1987 " during layout: running second layout pass"); 1988 view.requestLayout(); 1989 } 1990 measureHierarchy(host, lp, mView.getContext().getResources(), 1991 desiredWindowWidth, desiredWindowHeight); 1992 mInLayout = true; 1993 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1994 1995 mHandlingLayoutInLayoutRequest = false; 1996 1997 // Check the valid requests again, this time without checking/clearing the 1998 // layout flags, since requests happening during the second pass get noop'd 1999 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2000 if (validLayoutRequesters != null) { 2001 final ArrayList<View> finalRequesters = validLayoutRequesters; 2002 // Post second-pass requests to the next frame 2003 getRunQueue().post(new Runnable() { 2004 @Override 2005 public void run() { 2006 int numValidRequests = finalRequesters.size(); 2007 for (int i = 0; i < numValidRequests; ++i) { 2008 final View view = finalRequesters.get(i); 2009 Log.w("View", "requestLayout() improperly called by " + view + 2010 " during second layout pass: posting in next frame"); 2011 view.requestLayout(); 2012 } 2013 } 2014 }); 2015 } 2016 } 2017 2018 } 2019 } finally { 2020 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2021 } 2022 mInLayout = false; 2023 } 2024 2025 /** 2026 * This method is called during layout when there have been calls to requestLayout() during 2027 * layout. It walks through the list of views that requested layout to determine which ones 2028 * still need it, based on visibility in the hierarchy and whether they have already been 2029 * handled (as is usually the case with ListView children). 2030 * 2031 * @param layoutRequesters The list of views that requested layout during layout 2032 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2033 * If so, the FORCE_LAYOUT flag was not set on requesters. 2034 * @return A list of the actual views that still need to be laid out. 2035 */ 2036 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2037 boolean secondLayoutRequests) { 2038 2039 int numViewsRequestingLayout = layoutRequesters.size(); 2040 ArrayList<View> validLayoutRequesters = null; 2041 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2042 View view = layoutRequesters.get(i); 2043 if (view != null && view.mAttachInfo != null && view.mParent != null && 2044 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2045 View.PFLAG_FORCE_LAYOUT)) { 2046 boolean gone = false; 2047 View parent = view; 2048 // Only trigger new requests for views in a non-GONE hierarchy 2049 while (parent != null) { 2050 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2051 gone = true; 2052 break; 2053 } 2054 if (parent.mParent instanceof View) { 2055 parent = (View) parent.mParent; 2056 } else { 2057 parent = null; 2058 } 2059 } 2060 if (!gone) { 2061 if (validLayoutRequesters == null) { 2062 validLayoutRequesters = new ArrayList<View>(); 2063 } 2064 validLayoutRequesters.add(view); 2065 } 2066 } 2067 } 2068 if (!secondLayoutRequests) { 2069 // If we're checking the layout flags, then we need to clean them up also 2070 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2071 View view = layoutRequesters.get(i); 2072 while (view != null && 2073 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2074 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2075 if (view.mParent instanceof View) { 2076 view = (View) view.mParent; 2077 } else { 2078 view = null; 2079 } 2080 } 2081 } 2082 } 2083 layoutRequesters.clear(); 2084 return validLayoutRequesters; 2085 } 2086 2087 @Override 2088 public void requestTransparentRegion(View child) { 2089 // the test below should not fail unless someone is messing with us 2090 checkThread(); 2091 if (mView == child) { 2092 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2093 // Need to make sure we re-evaluate the window attributes next 2094 // time around, to ensure the window has the correct format. 2095 mWindowAttributesChanged = true; 2096 mWindowAttributesChangesFlag = 0; 2097 requestLayout(); 2098 } 2099 } 2100 2101 /** 2102 * Figures out the measure spec for the root view in a window based on it's 2103 * layout params. 2104 * 2105 * @param windowSize 2106 * The available width or height of the window 2107 * 2108 * @param rootDimension 2109 * The layout params for one dimension (width or height) of the 2110 * window. 2111 * 2112 * @return The measure spec to use to measure the root view. 2113 */ 2114 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2115 int measureSpec; 2116 switch (rootDimension) { 2117 2118 case ViewGroup.LayoutParams.MATCH_PARENT: 2119 // Window can't resize. Force root view to be windowSize. 2120 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2121 break; 2122 case ViewGroup.LayoutParams.WRAP_CONTENT: 2123 // Window can resize. Set max size for root view. 2124 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2125 break; 2126 default: 2127 // Window wants to be an exact size. Force root view to be that size. 2128 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2129 break; 2130 } 2131 return measureSpec; 2132 } 2133 2134 int mHardwareYOffset; 2135 int mResizeAlpha; 2136 final Paint mResizePaint = new Paint(); 2137 2138 @Override 2139 public void onHardwarePreDraw(HardwareCanvas canvas) { 2140 canvas.translate(0, -mHardwareYOffset); 2141 } 2142 2143 @Override 2144 public void onHardwarePostDraw(HardwareCanvas canvas) { 2145 if (mResizeBuffer != null) { 2146 mResizePaint.setAlpha(mResizeAlpha); 2147 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2148 } 2149 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2150 } 2151 2152 /** 2153 * @hide 2154 */ 2155 void outputDisplayList(View view) { 2156 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2157 DisplayList displayList = view.getDisplayList(); 2158 if (displayList != null) { 2159 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2160 } 2161 } 2162 } 2163 2164 /** 2165 * @see #PROPERTY_PROFILE_RENDERING 2166 */ 2167 private void profileRendering(boolean enabled) { 2168 if (mProfileRendering) { 2169 mRenderProfilingEnabled = enabled; 2170 2171 if (mRenderProfiler != null) { 2172 mChoreographer.removeFrameCallback(mRenderProfiler); 2173 } 2174 if (mRenderProfilingEnabled) { 2175 if (mRenderProfiler == null) { 2176 mRenderProfiler = new Choreographer.FrameCallback() { 2177 @Override 2178 public void doFrame(long frameTimeNanos) { 2179 mDirty.set(0, 0, mWidth, mHeight); 2180 scheduleTraversals(); 2181 if (mRenderProfilingEnabled) { 2182 mChoreographer.postFrameCallback(mRenderProfiler); 2183 } 2184 } 2185 }; 2186 } 2187 mChoreographer.postFrameCallback(mRenderProfiler); 2188 } else { 2189 mRenderProfiler = null; 2190 } 2191 } 2192 } 2193 2194 /** 2195 * Called from draw() when DEBUG_FPS is enabled 2196 */ 2197 private void trackFPS() { 2198 // Tracks frames per second drawn. First value in a series of draws may be bogus 2199 // because it down not account for the intervening idle time 2200 long nowTime = System.currentTimeMillis(); 2201 if (mFpsStartTime < 0) { 2202 mFpsStartTime = mFpsPrevTime = nowTime; 2203 mFpsNumFrames = 0; 2204 } else { 2205 ++mFpsNumFrames; 2206 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2207 long frameTime = nowTime - mFpsPrevTime; 2208 long totalTime = nowTime - mFpsStartTime; 2209 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2210 mFpsPrevTime = nowTime; 2211 if (totalTime > 1000) { 2212 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2213 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2214 mFpsStartTime = nowTime; 2215 mFpsNumFrames = 0; 2216 } 2217 } 2218 } 2219 2220 private void performDraw() { 2221 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2222 return; 2223 } 2224 2225 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2226 mFullRedrawNeeded = false; 2227 2228 mIsDrawing = true; 2229 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2230 try { 2231 draw(fullRedrawNeeded); 2232 } finally { 2233 mIsDrawing = false; 2234 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2235 } 2236 2237 if (mReportNextDraw) { 2238 mReportNextDraw = false; 2239 2240 if (LOCAL_LOGV) { 2241 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2242 } 2243 if (mSurfaceHolder != null && mSurface.isValid()) { 2244 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2245 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2246 if (callbacks != null) { 2247 for (SurfaceHolder.Callback c : callbacks) { 2248 if (c instanceof SurfaceHolder.Callback2) { 2249 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2250 mSurfaceHolder); 2251 } 2252 } 2253 } 2254 } 2255 try { 2256 mWindowSession.finishDrawing(mWindow); 2257 } catch (RemoteException e) { 2258 } 2259 } 2260 } 2261 2262 private void draw(boolean fullRedrawNeeded) { 2263 Surface surface = mSurface; 2264 if (!surface.isValid()) { 2265 return; 2266 } 2267 2268 if (DEBUG_FPS) { 2269 trackFPS(); 2270 } 2271 2272 if (!sFirstDrawComplete) { 2273 synchronized (sFirstDrawHandlers) { 2274 sFirstDrawComplete = true; 2275 final int count = sFirstDrawHandlers.size(); 2276 for (int i = 0; i< count; i++) { 2277 mHandler.post(sFirstDrawHandlers.get(i)); 2278 } 2279 } 2280 } 2281 2282 scrollToRectOrFocus(null, false); 2283 2284 final AttachInfo attachInfo = mAttachInfo; 2285 if (attachInfo.mViewScrollChanged) { 2286 attachInfo.mViewScrollChanged = false; 2287 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2288 } 2289 2290 int yoff; 2291 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2292 if (animating) { 2293 yoff = mScroller.getCurrY(); 2294 } else { 2295 yoff = mScrollY; 2296 } 2297 if (mCurScrollY != yoff) { 2298 mCurScrollY = yoff; 2299 fullRedrawNeeded = true; 2300 } 2301 2302 final float appScale = attachInfo.mApplicationScale; 2303 final boolean scalingRequired = attachInfo.mScalingRequired; 2304 2305 int resizeAlpha = 0; 2306 if (mResizeBuffer != null) { 2307 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2308 if (deltaTime < mResizeBufferDuration) { 2309 float amt = deltaTime/(float) mResizeBufferDuration; 2310 amt = mResizeInterpolator.getInterpolation(amt); 2311 animating = true; 2312 resizeAlpha = 255 - (int)(amt*255); 2313 } else { 2314 disposeResizeBuffer(); 2315 } 2316 } 2317 2318 final Rect dirty = mDirty; 2319 if (mSurfaceHolder != null) { 2320 // The app owns the surface, we won't draw. 2321 dirty.setEmpty(); 2322 if (animating) { 2323 if (mScroller != null) { 2324 mScroller.abortAnimation(); 2325 } 2326 disposeResizeBuffer(); 2327 } 2328 return; 2329 } 2330 2331 if (fullRedrawNeeded) { 2332 attachInfo.mIgnoreDirtyState = true; 2333 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2334 } 2335 2336 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2337 Log.v(TAG, "Draw " + mView + "/" 2338 + mWindowAttributes.getTitle() 2339 + ": dirty={" + dirty.left + "," + dirty.top 2340 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2341 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2342 appScale + ", width=" + mWidth + ", height=" + mHeight); 2343 } 2344 2345 invalidateDisplayLists(); 2346 2347 attachInfo.mTreeObserver.dispatchOnDraw(); 2348 2349 if (!dirty.isEmpty() || mIsAnimating) { 2350 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2351 // Draw with hardware renderer. 2352 mIsAnimating = false; 2353 mHardwareYOffset = yoff; 2354 mResizeAlpha = resizeAlpha; 2355 2356 mCurrentDirty.set(dirty); 2357 dirty.setEmpty(); 2358 2359 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2360 animating ? null : mCurrentDirty); 2361 } else { 2362 // If we get here with a disabled & requested hardware renderer, something went 2363 // wrong (an invalidate posted right before we destroyed the hardware surface 2364 // for instance) so we should just bail out. Locking the surface with software 2365 // rendering at this point would lock it forever and prevent hardware renderer 2366 // from doing its job when it comes back. 2367 // Before we request a new frame we must however attempt to reinitiliaze the 2368 // hardware renderer if it's in requested state. This would happen after an 2369 // eglTerminate() for instance. 2370 if (attachInfo.mHardwareRenderer != null && 2371 !attachInfo.mHardwareRenderer.isEnabled() && 2372 attachInfo.mHardwareRenderer.isRequested()) { 2373 2374 try { 2375 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2376 mHolder.getSurface()); 2377 } catch (OutOfResourcesException e) { 2378 handleOutOfResourcesException(e); 2379 return; 2380 } 2381 2382 mFullRedrawNeeded = true; 2383 scheduleTraversals(); 2384 return; 2385 } 2386 2387 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2388 return; 2389 } 2390 } 2391 } 2392 2393 if (animating) { 2394 mFullRedrawNeeded = true; 2395 scheduleTraversals(); 2396 } 2397 } 2398 2399 /** 2400 * @return true if drawing was succesfull, false if an error occurred 2401 */ 2402 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2403 boolean scalingRequired, Rect dirty) { 2404 2405 // Draw with software renderer. 2406 Canvas canvas; 2407 try { 2408 int left = dirty.left; 2409 int top = dirty.top; 2410 int right = dirty.right; 2411 int bottom = dirty.bottom; 2412 2413 canvas = mSurface.lockCanvas(dirty); 2414 2415 // The dirty rectangle can be modified by Surface.lockCanvas() 2416 //noinspection ConstantConditions 2417 if (left != dirty.left || top != dirty.top || right != dirty.right || 2418 bottom != dirty.bottom) { 2419 attachInfo.mIgnoreDirtyState = true; 2420 } 2421 2422 // TODO: Do this in native 2423 canvas.setDensity(mDensity); 2424 } catch (Surface.OutOfResourcesException e) { 2425 handleOutOfResourcesException(e); 2426 return false; 2427 } catch (IllegalArgumentException e) { 2428 Log.e(TAG, "Could not lock surface", e); 2429 // Don't assume this is due to out of memory, it could be 2430 // something else, and if it is something else then we could 2431 // kill stuff (or ourself) for no reason. 2432 mLayoutRequested = true; // ask wm for a new surface next time. 2433 return false; 2434 } 2435 2436 try { 2437 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2438 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2439 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2440 //canvas.drawARGB(255, 255, 0, 0); 2441 } 2442 2443 // If this bitmap's format includes an alpha channel, we 2444 // need to clear it before drawing so that the child will 2445 // properly re-composite its drawing on a transparent 2446 // background. This automatically respects the clip/dirty region 2447 // or 2448 // If we are applying an offset, we need to clear the area 2449 // where the offset doesn't appear to avoid having garbage 2450 // left in the blank areas. 2451 if (!canvas.isOpaque() || yoff != 0) { 2452 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2453 } 2454 2455 dirty.setEmpty(); 2456 mIsAnimating = false; 2457 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2458 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2459 2460 if (DEBUG_DRAW) { 2461 Context cxt = mView.getContext(); 2462 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2463 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2464 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2465 } 2466 try { 2467 canvas.translate(0, -yoff); 2468 if (mTranslator != null) { 2469 mTranslator.translateCanvas(canvas); 2470 } 2471 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2472 attachInfo.mSetIgnoreDirtyState = false; 2473 2474 mView.draw(canvas); 2475 2476 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2477 } finally { 2478 if (!attachInfo.mSetIgnoreDirtyState) { 2479 // Only clear the flag if it was not set during the mView.draw() call 2480 attachInfo.mIgnoreDirtyState = false; 2481 } 2482 } 2483 } finally { 2484 try { 2485 surface.unlockCanvasAndPost(canvas); 2486 } catch (IllegalArgumentException e) { 2487 Log.e(TAG, "Could not unlock surface", e); 2488 mLayoutRequested = true; // ask wm for a new surface next time. 2489 //noinspection ReturnInsideFinallyBlock 2490 return false; 2491 } 2492 2493 if (LOCAL_LOGV) { 2494 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2495 } 2496 } 2497 return true; 2498 } 2499 2500 /** 2501 * We want to draw a highlight around the current accessibility focused. 2502 * Since adding a style for all possible view is not a viable option we 2503 * have this specialized drawing method. 2504 * 2505 * Note: We are doing this here to be able to draw the highlight for 2506 * virtual views in addition to real ones. 2507 * 2508 * @param canvas The canvas on which to draw. 2509 */ 2510 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2511 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2512 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2513 return; 2514 } 2515 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2516 return; 2517 } 2518 Drawable drawable = getAccessibilityFocusedDrawable(); 2519 if (drawable == null) { 2520 return; 2521 } 2522 AccessibilityNodeProvider provider = 2523 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2524 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2525 if (provider == null) { 2526 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2527 } else { 2528 if (mAccessibilityFocusedVirtualView == null) { 2529 return; 2530 } 2531 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2532 } 2533 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2534 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2535 drawable.setBounds(bounds); 2536 drawable.draw(canvas); 2537 } 2538 2539 private Drawable getAccessibilityFocusedDrawable() { 2540 if (mAttachInfo != null) { 2541 // Lazily load the accessibility focus drawable. 2542 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2543 TypedValue value = new TypedValue(); 2544 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2545 R.attr.accessibilityFocusedDrawable, value, true); 2546 if (resolved) { 2547 mAttachInfo.mAccessibilityFocusDrawable = 2548 mView.mContext.getResources().getDrawable(value.resourceId); 2549 } 2550 } 2551 return mAttachInfo.mAccessibilityFocusDrawable; 2552 } 2553 return null; 2554 } 2555 2556 void invalidateDisplayLists() { 2557 final ArrayList<DisplayList> displayLists = mDisplayLists; 2558 final int count = displayLists.size(); 2559 2560 for (int i = 0; i < count; i++) { 2561 final DisplayList displayList = displayLists.get(i); 2562 if (displayList.isDirty()) { 2563 displayList.reset(); 2564 } 2565 } 2566 2567 displayLists.clear(); 2568 } 2569 2570 /** 2571 * @hide 2572 */ 2573 public void setDrawDuringWindowsAnimating(boolean value) { 2574 mDrawDuringWindowsAnimating = value; 2575 if (value) { 2576 handleDispatchDoneAnimating(); 2577 } 2578 } 2579 2580 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2581 final View.AttachInfo attachInfo = mAttachInfo; 2582 final Rect ci = attachInfo.mContentInsets; 2583 final Rect vi = attachInfo.mVisibleInsets; 2584 int scrollY = 0; 2585 boolean handled = false; 2586 2587 if (vi.left > ci.left || vi.top > ci.top 2588 || vi.right > ci.right || vi.bottom > ci.bottom) { 2589 // We'll assume that we aren't going to change the scroll 2590 // offset, since we want to avoid that unless it is actually 2591 // going to make the focus visible... otherwise we scroll 2592 // all over the place. 2593 scrollY = mScrollY; 2594 // We can be called for two different situations: during a draw, 2595 // to update the scroll position if the focus has changed (in which 2596 // case 'rectangle' is null), or in response to a 2597 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2598 // is non-null and we just want to scroll to whatever that 2599 // rectangle is). 2600 final View focus = mView.findFocus(); 2601 if (focus == null) { 2602 return false; 2603 } 2604 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2605 if (focus != lastScrolledFocus) { 2606 // If the focus has changed, then ignore any requests to scroll 2607 // to a rectangle; first we want to make sure the entire focus 2608 // view is visible. 2609 rectangle = null; 2610 } 2611 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2612 + " rectangle=" + rectangle + " ci=" + ci 2613 + " vi=" + vi); 2614 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2615 // Optimization: if the focus hasn't changed since last 2616 // time, and no layout has happened, then just leave things 2617 // as they are. 2618 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2619 + mScrollY + " vi=" + vi.toShortString()); 2620 } else { 2621 // We need to determine if the currently focused view is 2622 // within the visible part of the window and, if not, apply 2623 // a pan so it can be seen. 2624 mLastScrolledFocus = new WeakReference<View>(focus); 2625 mScrollMayChange = false; 2626 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2627 // Try to find the rectangle from the focus view. 2628 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2629 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2630 + mView.getWidth() + " h=" + mView.getHeight() 2631 + " ci=" + ci.toShortString() 2632 + " vi=" + vi.toShortString()); 2633 if (rectangle == null) { 2634 focus.getFocusedRect(mTempRect); 2635 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2636 + ": focusRect=" + mTempRect.toShortString()); 2637 if (mView instanceof ViewGroup) { 2638 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2639 focus, mTempRect); 2640 } 2641 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2642 "Focus in window: focusRect=" 2643 + mTempRect.toShortString() 2644 + " visRect=" + mVisRect.toShortString()); 2645 } else { 2646 mTempRect.set(rectangle); 2647 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2648 "Request scroll to rect: " 2649 + mTempRect.toShortString() 2650 + " visRect=" + mVisRect.toShortString()); 2651 } 2652 if (mTempRect.intersect(mVisRect)) { 2653 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2654 "Focus window visible rect: " 2655 + mTempRect.toShortString()); 2656 if (mTempRect.height() > 2657 (mView.getHeight()-vi.top-vi.bottom)) { 2658 // If the focus simply is not going to fit, then 2659 // best is probably just to leave things as-is. 2660 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2661 "Too tall; leaving scrollY=" + scrollY); 2662 } else if ((mTempRect.top-scrollY) < vi.top) { 2663 scrollY -= vi.top - (mTempRect.top-scrollY); 2664 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2665 "Top covered; scrollY=" + scrollY); 2666 } else if ((mTempRect.bottom-scrollY) 2667 > (mView.getHeight()-vi.bottom)) { 2668 scrollY += (mTempRect.bottom-scrollY) 2669 - (mView.getHeight()-vi.bottom); 2670 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2671 "Bottom covered; scrollY=" + scrollY); 2672 } 2673 handled = true; 2674 } 2675 } 2676 } 2677 } 2678 2679 if (scrollY != mScrollY) { 2680 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2681 + mScrollY + " , new=" + scrollY); 2682 if (!immediate && mResizeBuffer == null) { 2683 if (mScroller == null) { 2684 mScroller = new Scroller(mView.getContext()); 2685 } 2686 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2687 } else if (mScroller != null) { 2688 mScroller.abortAnimation(); 2689 } 2690 mScrollY = scrollY; 2691 } 2692 2693 return handled; 2694 } 2695 2696 /** 2697 * @hide 2698 */ 2699 public View getAccessibilityFocusedHost() { 2700 return mAccessibilityFocusedHost; 2701 } 2702 2703 /** 2704 * @hide 2705 */ 2706 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2707 return mAccessibilityFocusedVirtualView; 2708 } 2709 2710 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2711 // If we have a virtual view with accessibility focus we need 2712 // to clear the focus and invalidate the virtual view bounds. 2713 if (mAccessibilityFocusedVirtualView != null) { 2714 2715 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2716 View focusHost = mAccessibilityFocusedHost; 2717 2718 // Wipe the state of the current accessibility focus since 2719 // the call into the provider to clear accessibility focus 2720 // will fire an accessibility event which will end up calling 2721 // this method and we want to have clean state when this 2722 // invocation happens. 2723 mAccessibilityFocusedHost = null; 2724 mAccessibilityFocusedVirtualView = null; 2725 2726 // Clear accessibility focus on the host after clearing state since 2727 // this method may be reentrant. 2728 focusHost.clearAccessibilityFocusNoCallbacks(); 2729 2730 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2731 if (provider != null) { 2732 // Invalidate the area of the cleared accessibility focus. 2733 focusNode.getBoundsInParent(mTempRect); 2734 focusHost.invalidate(mTempRect); 2735 // Clear accessibility focus in the virtual node. 2736 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2737 focusNode.getSourceNodeId()); 2738 provider.performAction(virtualNodeId, 2739 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2740 } 2741 focusNode.recycle(); 2742 } 2743 if (mAccessibilityFocusedHost != null) { 2744 // Clear accessibility focus in the view. 2745 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2746 } 2747 2748 // Set the new focus host and node. 2749 mAccessibilityFocusedHost = view; 2750 mAccessibilityFocusedVirtualView = node; 2751 } 2752 2753 @Override 2754 public void requestChildFocus(View child, View focused) { 2755 if (DEBUG_INPUT_RESIZE) { 2756 Log.v(TAG, "Request child focus: focus now " + focused); 2757 } 2758 checkThread(); 2759 scheduleTraversals(); 2760 } 2761 2762 @Override 2763 public void clearChildFocus(View child) { 2764 if (DEBUG_INPUT_RESIZE) { 2765 Log.v(TAG, "Clearing child focus"); 2766 } 2767 checkThread(); 2768 scheduleTraversals(); 2769 } 2770 2771 @Override 2772 public ViewParent getParentForAccessibility() { 2773 return null; 2774 } 2775 2776 @Override 2777 public void focusableViewAvailable(View v) { 2778 checkThread(); 2779 if (mView != null) { 2780 if (!mView.hasFocus()) { 2781 v.requestFocus(); 2782 } else { 2783 // the one case where will transfer focus away from the current one 2784 // is if the current view is a view group that prefers to give focus 2785 // to its children first AND the view is a descendant of it. 2786 View focused = mView.findFocus(); 2787 if (focused instanceof ViewGroup) { 2788 ViewGroup group = (ViewGroup) focused; 2789 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2790 && isViewDescendantOf(v, focused)) { 2791 v.requestFocus(); 2792 } 2793 } 2794 } 2795 } 2796 } 2797 2798 @Override 2799 public void recomputeViewAttributes(View child) { 2800 checkThread(); 2801 if (mView == child) { 2802 mAttachInfo.mRecomputeGlobalAttributes = true; 2803 if (!mWillDrawSoon) { 2804 scheduleTraversals(); 2805 } 2806 } 2807 } 2808 2809 void dispatchDetachedFromWindow() { 2810 if (mView != null && mView.mAttachInfo != null) { 2811 if (mAttachInfo.mHardwareRenderer != null && 2812 mAttachInfo.mHardwareRenderer.isEnabled()) { 2813 mAttachInfo.mHardwareRenderer.validate(); 2814 } 2815 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2816 mView.dispatchDetachedFromWindow(); 2817 } 2818 2819 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2820 mAccessibilityManager.removeAccessibilityStateChangeListener( 2821 mAccessibilityInteractionConnectionManager); 2822 removeSendWindowContentChangedCallback(); 2823 2824 destroyHardwareRenderer(); 2825 2826 setAccessibilityFocus(null, null); 2827 2828 mView.assignParent(null); 2829 mView = null; 2830 mAttachInfo.mRootView = null; 2831 mAttachInfo.mSurface = null; 2832 2833 mSurface.release(); 2834 2835 if (mInputQueueCallback != null && mInputQueue != null) { 2836 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2837 mInputQueue.dispose(); 2838 mInputQueueCallback = null; 2839 mInputQueue = null; 2840 } 2841 if (mInputEventReceiver != null) { 2842 mInputEventReceiver.dispose(); 2843 mInputEventReceiver = null; 2844 } 2845 try { 2846 mWindowSession.remove(mWindow); 2847 } catch (RemoteException e) { 2848 } 2849 2850 // Dispose the input channel after removing the window so the Window Manager 2851 // doesn't interpret the input channel being closed as an abnormal termination. 2852 if (mInputChannel != null) { 2853 mInputChannel.dispose(); 2854 mInputChannel = null; 2855 } 2856 2857 unscheduleTraversals(); 2858 } 2859 2860 void updateConfiguration(Configuration config, boolean force) { 2861 if (DEBUG_CONFIGURATION) Log.v(TAG, 2862 "Applying new config to window " 2863 + mWindowAttributes.getTitle() 2864 + ": " + config); 2865 2866 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2867 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2868 config = new Configuration(config); 2869 ci.applyToConfiguration(mNoncompatDensity, config); 2870 } 2871 2872 synchronized (sConfigCallbacks) { 2873 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2874 sConfigCallbacks.get(i).onConfigurationChanged(config); 2875 } 2876 } 2877 if (mView != null) { 2878 // At this point the resources have been updated to 2879 // have the most recent config, whatever that is. Use 2880 // the one in them which may be newer. 2881 config = mView.getResources().getConfiguration(); 2882 if (force || mLastConfiguration.diff(config) != 0) { 2883 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2884 final int currentLayoutDirection = config.getLayoutDirection(); 2885 mLastConfiguration.setTo(config); 2886 if (lastLayoutDirection != currentLayoutDirection && 2887 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2888 mView.setLayoutDirection(currentLayoutDirection); 2889 } 2890 mView.dispatchConfigurationChanged(config); 2891 } 2892 } 2893 2894 mFlipControllerFallbackKeys = 2895 mContext.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 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_INPUT_EVENT = 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 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2945 2946 final class ViewRootHandler extends Handler { 2947 @Override 2948 public String getMessageName(Message message) { 2949 switch (message.what) { 2950 case MSG_INVALIDATE: 2951 return "MSG_INVALIDATE"; 2952 case MSG_INVALIDATE_RECT: 2953 return "MSG_INVALIDATE_RECT"; 2954 case MSG_DIE: 2955 return "MSG_DIE"; 2956 case MSG_RESIZED: 2957 return "MSG_RESIZED"; 2958 case MSG_RESIZED_REPORT: 2959 return "MSG_RESIZED_REPORT"; 2960 case MSG_WINDOW_FOCUS_CHANGED: 2961 return "MSG_WINDOW_FOCUS_CHANGED"; 2962 case MSG_DISPATCH_INPUT_EVENT: 2963 return "MSG_DISPATCH_INPUT_EVENT"; 2964 case MSG_DISPATCH_APP_VISIBILITY: 2965 return "MSG_DISPATCH_APP_VISIBILITY"; 2966 case MSG_DISPATCH_GET_NEW_SURFACE: 2967 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2968 case MSG_DISPATCH_KEY_FROM_IME: 2969 return "MSG_DISPATCH_KEY_FROM_IME"; 2970 case MSG_FINISH_INPUT_CONNECTION: 2971 return "MSG_FINISH_INPUT_CONNECTION"; 2972 case MSG_CHECK_FOCUS: 2973 return "MSG_CHECK_FOCUS"; 2974 case MSG_CLOSE_SYSTEM_DIALOGS: 2975 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2976 case MSG_DISPATCH_DRAG_EVENT: 2977 return "MSG_DISPATCH_DRAG_EVENT"; 2978 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2979 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2980 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2981 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2982 case MSG_UPDATE_CONFIGURATION: 2983 return "MSG_UPDATE_CONFIGURATION"; 2984 case MSG_PROCESS_INPUT_EVENTS: 2985 return "MSG_PROCESS_INPUT_EVENTS"; 2986 case MSG_DISPATCH_SCREEN_STATE: 2987 return "MSG_DISPATCH_SCREEN_STATE"; 2988 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2989 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2990 case MSG_DISPATCH_DONE_ANIMATING: 2991 return "MSG_DISPATCH_DONE_ANIMATING"; 2992 case MSG_WINDOW_MOVED: 2993 return "MSG_WINDOW_MOVED"; 2994 case MSG_FLUSH_LAYER_UPDATES: 2995 return "MSG_FLUSH_LAYER_UPDATES"; 2996 } 2997 return super.getMessageName(message); 2998 } 2999 3000 @Override 3001 public void handleMessage(Message msg) { 3002 switch (msg.what) { 3003 case MSG_INVALIDATE: 3004 ((View) msg.obj).invalidate(); 3005 break; 3006 case MSG_INVALIDATE_RECT: 3007 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3008 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3009 info.recycle(); 3010 break; 3011 case MSG_PROCESS_INPUT_EVENTS: 3012 mProcessInputEventsScheduled = false; 3013 doProcessInputEvents(); 3014 break; 3015 case MSG_DISPATCH_APP_VISIBILITY: 3016 handleAppVisibility(msg.arg1 != 0); 3017 break; 3018 case MSG_DISPATCH_GET_NEW_SURFACE: 3019 handleGetNewSurface(); 3020 break; 3021 case MSG_RESIZED: { 3022 // Recycled in the fall through... 3023 SomeArgs args = (SomeArgs) msg.obj; 3024 if (mWinFrame.equals(args.arg1) 3025 && mPendingOverscanInsets.equals(args.arg5) 3026 && mPendingContentInsets.equals(args.arg2) 3027 && mPendingVisibleInsets.equals(args.arg3) 3028 && args.arg4 == null) { 3029 break; 3030 } 3031 } // fall through... 3032 case MSG_RESIZED_REPORT: 3033 if (mAdded) { 3034 SomeArgs args = (SomeArgs) msg.obj; 3035 3036 Configuration config = (Configuration) args.arg4; 3037 if (config != null) { 3038 updateConfiguration(config, false); 3039 } 3040 3041 mWinFrame.set((Rect) args.arg1); 3042 mPendingOverscanInsets.set((Rect) args.arg5); 3043 mPendingContentInsets.set((Rect) args.arg2); 3044 mPendingVisibleInsets.set((Rect) args.arg3); 3045 3046 args.recycle(); 3047 3048 if (msg.what == MSG_RESIZED_REPORT) { 3049 mReportNextDraw = true; 3050 } 3051 3052 if (mView != null) { 3053 forceLayout(mView); 3054 } 3055 3056 requestLayout(); 3057 } 3058 break; 3059 case MSG_WINDOW_MOVED: 3060 if (mAdded) { 3061 final int w = mWinFrame.width(); 3062 final int h = mWinFrame.height(); 3063 final int l = msg.arg1; 3064 final int t = msg.arg2; 3065 mWinFrame.left = l; 3066 mWinFrame.right = l + w; 3067 mWinFrame.top = t; 3068 mWinFrame.bottom = t + h; 3069 3070 if (mView != null) { 3071 forceLayout(mView); 3072 } 3073 requestLayout(); 3074 } 3075 break; 3076 case MSG_WINDOW_FOCUS_CHANGED: { 3077 if (mAdded) { 3078 boolean hasWindowFocus = msg.arg1 != 0; 3079 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3080 3081 profileRendering(hasWindowFocus); 3082 3083 if (hasWindowFocus) { 3084 boolean inTouchMode = msg.arg2 != 0; 3085 ensureTouchModeLocally(inTouchMode); 3086 3087 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3088 mFullRedrawNeeded = true; 3089 try { 3090 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3091 mWidth, mHeight, mHolder.getSurface()); 3092 } catch (OutOfResourcesException e) { 3093 Log.e(TAG, "OutOfResourcesException locking surface", e); 3094 try { 3095 if (!mWindowSession.outOfMemory(mWindow)) { 3096 Slog.w(TAG, "No processes killed for memory; killing self"); 3097 Process.killProcess(Process.myPid()); 3098 } 3099 } catch (RemoteException ex) { 3100 } 3101 // Retry in a bit. 3102 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3103 return; 3104 } 3105 } 3106 } 3107 3108 mLastWasImTarget = WindowManager.LayoutParams 3109 .mayUseInputMethod(mWindowAttributes.flags); 3110 3111 InputMethodManager imm = InputMethodManager.peekInstance(); 3112 if (mView != null) { 3113 if (hasWindowFocus && imm != null && mLastWasImTarget && 3114 !isInLocalFocusMode()) { 3115 imm.startGettingWindowFocus(mView); 3116 } 3117 mAttachInfo.mKeyDispatchState.reset(); 3118 mView.dispatchWindowFocusChanged(hasWindowFocus); 3119 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3120 } 3121 3122 // Note: must be done after the focus change callbacks, 3123 // so all of the view state is set up correctly. 3124 if (hasWindowFocus) { 3125 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3126 imm.onWindowFocus(mView, mView.findFocus(), 3127 mWindowAttributes.softInputMode, 3128 !mHasHadWindowFocus, mWindowAttributes.flags); 3129 } 3130 // Clear the forward bit. We can just do this directly, since 3131 // the window manager doesn't care about it. 3132 mWindowAttributes.softInputMode &= 3133 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3134 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3135 .softInputMode &= 3136 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3137 mHasHadWindowFocus = true; 3138 } 3139 3140 setAccessibilityFocus(null, null); 3141 3142 if (mView != null && mAccessibilityManager.isEnabled()) { 3143 if (hasWindowFocus) { 3144 mView.sendAccessibilityEvent( 3145 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3146 } 3147 } 3148 } 3149 } break; 3150 case MSG_DIE: 3151 doDie(); 3152 break; 3153 case MSG_DISPATCH_INPUT_EVENT: { 3154 InputEvent event = (InputEvent)msg.obj; 3155 enqueueInputEvent(event, null, 0, true); 3156 } break; 3157 case MSG_DISPATCH_KEY_FROM_IME: { 3158 if (LOCAL_LOGV) Log.v( 3159 TAG, "Dispatching key " 3160 + msg.obj + " from IME to " + mView); 3161 KeyEvent event = (KeyEvent)msg.obj; 3162 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3163 // The IME is trying to say this event is from the 3164 // system! Bad bad bad! 3165 //noinspection UnusedAssignment 3166 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3167 } 3168 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3169 } break; 3170 case MSG_FINISH_INPUT_CONNECTION: { 3171 InputMethodManager imm = InputMethodManager.peekInstance(); 3172 if (imm != null) { 3173 imm.reportFinishInputConnection((InputConnection)msg.obj); 3174 } 3175 } break; 3176 case MSG_CHECK_FOCUS: { 3177 InputMethodManager imm = InputMethodManager.peekInstance(); 3178 if (imm != null) { 3179 imm.checkFocus(); 3180 } 3181 } break; 3182 case MSG_CLOSE_SYSTEM_DIALOGS: { 3183 if (mView != null) { 3184 mView.onCloseSystemDialogs((String)msg.obj); 3185 } 3186 } break; 3187 case MSG_DISPATCH_DRAG_EVENT: 3188 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3189 DragEvent event = (DragEvent)msg.obj; 3190 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3191 handleDragEvent(event); 3192 } break; 3193 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3194 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3195 } break; 3196 case MSG_UPDATE_CONFIGURATION: { 3197 Configuration config = (Configuration)msg.obj; 3198 if (config.isOtherSeqNewer(mLastConfiguration)) { 3199 config = mLastConfiguration; 3200 } 3201 updateConfiguration(config, false); 3202 } break; 3203 case MSG_DISPATCH_SCREEN_STATE: { 3204 if (mView != null) { 3205 handleScreenStateChange(msg.arg1 == 1); 3206 } 3207 } break; 3208 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3209 setAccessibilityFocus(null, null); 3210 } break; 3211 case MSG_DISPATCH_DONE_ANIMATING: { 3212 handleDispatchDoneAnimating(); 3213 } break; 3214 case MSG_INVALIDATE_WORLD: { 3215 if (mView != null) { 3216 invalidateWorld(mView); 3217 } 3218 } break; 3219 case MSG_FLUSH_LAYER_UPDATES: { 3220 flushHardwareLayerUpdates(); 3221 } break; 3222 } 3223 } 3224 } 3225 3226 final ViewRootHandler mHandler = new ViewRootHandler(); 3227 3228 /** 3229 * Something in the current window tells us we need to change the touch mode. For 3230 * example, we are not in touch mode, and the user touches the screen. 3231 * 3232 * If the touch mode has changed, tell the window manager, and handle it locally. 3233 * 3234 * @param inTouchMode Whether we want to be in touch mode. 3235 * @return True if the touch mode changed and focus changed was changed as a result 3236 */ 3237 boolean ensureTouchMode(boolean inTouchMode) { 3238 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3239 + "touch mode is " + mAttachInfo.mInTouchMode); 3240 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3241 3242 // tell the window manager 3243 try { 3244 if (!isInLocalFocusMode()) { 3245 mWindowSession.setInTouchMode(inTouchMode); 3246 } 3247 } catch (RemoteException e) { 3248 throw new RuntimeException(e); 3249 } 3250 3251 // handle the change 3252 return ensureTouchModeLocally(inTouchMode); 3253 } 3254 3255 /** 3256 * Ensure that the touch mode for this window is set, and if it is changing, 3257 * take the appropriate action. 3258 * @param inTouchMode Whether we want to be in touch mode. 3259 * @return True if the touch mode changed and focus changed was changed as a result 3260 */ 3261 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3262 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3263 + "touch mode is " + mAttachInfo.mInTouchMode); 3264 3265 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3266 3267 mAttachInfo.mInTouchMode = inTouchMode; 3268 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3269 3270 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3271 } 3272 3273 private boolean enterTouchMode() { 3274 if (mView != null && mView.hasFocus()) { 3275 // note: not relying on mFocusedView here because this could 3276 // be when the window is first being added, and mFocused isn't 3277 // set yet. 3278 final View focused = mView.findFocus(); 3279 if (focused != null && !focused.isFocusableInTouchMode()) { 3280 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3281 if (ancestorToTakeFocus != null) { 3282 // there is an ancestor that wants focus after its 3283 // descendants that is focusable in touch mode.. give it 3284 // focus 3285 return ancestorToTakeFocus.requestFocus(); 3286 } else { 3287 // There's nothing to focus. Clear and propagate through the 3288 // hierarchy, but don't attempt to place new focus. 3289 focused.clearFocusInternal(true, false); 3290 return true; 3291 } 3292 } 3293 } 3294 return false; 3295 } 3296 3297 /** 3298 * Find an ancestor of focused that wants focus after its descendants and is 3299 * focusable in touch mode. 3300 * @param focused The currently focused view. 3301 * @return An appropriate view, or null if no such view exists. 3302 */ 3303 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3304 ViewParent parent = focused.getParent(); 3305 while (parent instanceof ViewGroup) { 3306 final ViewGroup vgParent = (ViewGroup) parent; 3307 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3308 && vgParent.isFocusableInTouchMode()) { 3309 return vgParent; 3310 } 3311 if (vgParent.isRootNamespace()) { 3312 return null; 3313 } else { 3314 parent = vgParent.getParent(); 3315 } 3316 } 3317 return null; 3318 } 3319 3320 private boolean leaveTouchMode() { 3321 if (mView != null) { 3322 if (mView.hasFocus()) { 3323 View focusedView = mView.findFocus(); 3324 if (!(focusedView instanceof ViewGroup)) { 3325 // some view has focus, let it keep it 3326 return false; 3327 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3328 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3329 // some view group has focus, and doesn't prefer its children 3330 // over itself for focus, so let them keep it. 3331 return false; 3332 } 3333 } 3334 3335 // find the best view to give focus to in this brave new non-touch-mode 3336 // world 3337 final View focused = focusSearch(null, View.FOCUS_DOWN); 3338 if (focused != null) { 3339 return focused.requestFocus(View.FOCUS_DOWN); 3340 } 3341 } 3342 return false; 3343 } 3344 3345 /** 3346 * Base class for implementing a stage in the chain of responsibility 3347 * for processing input events. 3348 * <p> 3349 * Events are delivered to the stage by the {@link #deliver} method. The stage 3350 * then has the choice of finishing the event or forwarding it to the next stage. 3351 * </p> 3352 */ 3353 abstract class InputStage { 3354 private final InputStage mNext; 3355 3356 protected static final int FORWARD = 0; 3357 protected static final int FINISH_HANDLED = 1; 3358 protected static final int FINISH_NOT_HANDLED = 2; 3359 3360 /** 3361 * Creates an input stage. 3362 * @param next The next stage to which events should be forwarded. 3363 */ 3364 public InputStage(InputStage next) { 3365 mNext = next; 3366 } 3367 3368 /** 3369 * Delivers an event to be processed. 3370 */ 3371 public final void deliver(QueuedInputEvent q) { 3372 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3373 forward(q); 3374 } else if (mView == null || !mAdded) { 3375 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3376 finish(q, false); 3377 } else if (!mAttachInfo.mHasWindowFocus && 3378 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3379 !isTerminalInputEvent(q.mEvent)) { 3380 // If this is a focused event and the window doesn't currently have input focus, 3381 // then drop this event. This could be an event that came back from the previous 3382 // stage but the window has lost focus in the meantime. 3383 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3384 finish(q, false); 3385 } else { 3386 apply(q, onProcess(q)); 3387 } 3388 } 3389 3390 /** 3391 * Marks the the input event as finished then forwards it to the next stage. 3392 */ 3393 protected void finish(QueuedInputEvent q, boolean handled) { 3394 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3395 if (handled) { 3396 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3397 } 3398 forward(q); 3399 } 3400 3401 /** 3402 * Forwards the event to the next stage. 3403 */ 3404 protected void forward(QueuedInputEvent q) { 3405 onDeliverToNext(q); 3406 } 3407 3408 /** 3409 * Applies a result code from {@link #onProcess} to the specified event. 3410 */ 3411 protected void apply(QueuedInputEvent q, int result) { 3412 if (result == FORWARD) { 3413 forward(q); 3414 } else if (result == FINISH_HANDLED) { 3415 finish(q, true); 3416 } else if (result == FINISH_NOT_HANDLED) { 3417 finish(q, false); 3418 } else { 3419 throw new IllegalArgumentException("Invalid result: " + result); 3420 } 3421 } 3422 3423 /** 3424 * Called when an event is ready to be processed. 3425 * @return A result code indicating how the event was handled. 3426 */ 3427 protected int onProcess(QueuedInputEvent q) { 3428 return FORWARD; 3429 } 3430 3431 /** 3432 * Called when an event is being delivered to the next stage. 3433 */ 3434 protected void onDeliverToNext(QueuedInputEvent q) { 3435 if (mNext != null) { 3436 mNext.deliver(q); 3437 } else { 3438 finishInputEvent(q); 3439 } 3440 } 3441 } 3442 3443 /** 3444 * Base class for implementing an input pipeline stage that supports 3445 * asynchronous and out-of-order processing of input events. 3446 * <p> 3447 * In addition to what a normal input stage can do, an asynchronous 3448 * input stage may also defer an input event that has been delivered to it 3449 * and finish or forward it later. 3450 * </p> 3451 */ 3452 abstract class AsyncInputStage extends InputStage { 3453 private final String mTraceCounter; 3454 3455 private QueuedInputEvent mQueueHead; 3456 private QueuedInputEvent mQueueTail; 3457 private int mQueueLength; 3458 3459 protected static final int DEFER = 3; 3460 3461 /** 3462 * Creates an asynchronous input stage. 3463 * @param next The next stage to which events should be forwarded. 3464 * @param traceCounter The name of a counter to record the size of 3465 * the queue of pending events. 3466 */ 3467 public AsyncInputStage(InputStage next, String traceCounter) { 3468 super(next); 3469 mTraceCounter = traceCounter; 3470 } 3471 3472 /** 3473 * Marks the event as deferred, which is to say that it will be handled 3474 * asynchronously. The caller is responsible for calling {@link #forward} 3475 * or {@link #finish} later when it is done handling the event. 3476 */ 3477 protected void defer(QueuedInputEvent q) { 3478 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3479 enqueue(q); 3480 } 3481 3482 @Override 3483 protected void forward(QueuedInputEvent q) { 3484 // Clear the deferred flag. 3485 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3486 3487 // Fast path if the queue is empty. 3488 QueuedInputEvent curr = mQueueHead; 3489 if (curr == null) { 3490 super.forward(q); 3491 return; 3492 } 3493 3494 // Determine whether the event must be serialized behind any others 3495 // before it can be delivered to the next stage. This is done because 3496 // deferred events might be handled out of order by the stage. 3497 final int deviceId = q.mEvent.getDeviceId(); 3498 QueuedInputEvent prev = null; 3499 boolean blocked = false; 3500 while (curr != null && curr != q) { 3501 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3502 blocked = true; 3503 } 3504 prev = curr; 3505 curr = curr.mNext; 3506 } 3507 3508 // If the event is blocked, then leave it in the queue to be delivered later. 3509 // Note that the event might not yet be in the queue if it was not previously 3510 // deferred so we will enqueue it if needed. 3511 if (blocked) { 3512 if (curr == null) { 3513 enqueue(q); 3514 } 3515 return; 3516 } 3517 3518 // The event is not blocked. Deliver it immediately. 3519 if (curr != null) { 3520 curr = curr.mNext; 3521 dequeue(q, prev); 3522 } 3523 super.forward(q); 3524 3525 // Dequeuing this event may have unblocked successors. Deliver them. 3526 while (curr != null) { 3527 if (deviceId == curr.mEvent.getDeviceId()) { 3528 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3529 break; 3530 } 3531 QueuedInputEvent next = curr.mNext; 3532 dequeue(curr, prev); 3533 super.forward(curr); 3534 curr = next; 3535 } else { 3536 prev = curr; 3537 curr = curr.mNext; 3538 } 3539 } 3540 } 3541 3542 @Override 3543 protected void apply(QueuedInputEvent q, int result) { 3544 if (result == DEFER) { 3545 defer(q); 3546 } else { 3547 super.apply(q, result); 3548 } 3549 } 3550 3551 private void enqueue(QueuedInputEvent q) { 3552 if (mQueueTail == null) { 3553 mQueueHead = q; 3554 mQueueTail = q; 3555 } else { 3556 mQueueTail.mNext = q; 3557 mQueueTail = q; 3558 } 3559 3560 mQueueLength += 1; 3561 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3562 } 3563 3564 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3565 if (prev == null) { 3566 mQueueHead = q.mNext; 3567 } else { 3568 prev.mNext = q.mNext; 3569 } 3570 if (mQueueTail == q) { 3571 mQueueTail = prev; 3572 } 3573 q.mNext = null; 3574 3575 mQueueLength -= 1; 3576 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3577 } 3578 } 3579 3580 /** 3581 * Delivers pre-ime input events to a native activity. 3582 * Does not support pointer events. 3583 */ 3584 final class NativePreImeInputStage extends AsyncInputStage 3585 implements InputQueue.FinishedInputEventCallback { 3586 public NativePreImeInputStage(InputStage next, String traceCounter) { 3587 super(next, traceCounter); 3588 } 3589 3590 @Override 3591 protected int onProcess(QueuedInputEvent q) { 3592 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3593 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3594 return DEFER; 3595 } 3596 return FORWARD; 3597 } 3598 3599 @Override 3600 public void onFinishedInputEvent(Object token, boolean handled) { 3601 QueuedInputEvent q = (QueuedInputEvent)token; 3602 if (handled) { 3603 finish(q, true); 3604 return; 3605 } 3606 forward(q); 3607 } 3608 } 3609 3610 /** 3611 * Delivers pre-ime input events to the view hierarchy. 3612 * Does not support pointer events. 3613 */ 3614 final class ViewPreImeInputStage extends InputStage { 3615 public ViewPreImeInputStage(InputStage next) { 3616 super(next); 3617 } 3618 3619 @Override 3620 protected int onProcess(QueuedInputEvent q) { 3621 if (q.mEvent instanceof KeyEvent) { 3622 return processKeyEvent(q); 3623 } 3624 return FORWARD; 3625 } 3626 3627 private int processKeyEvent(QueuedInputEvent q) { 3628 final KeyEvent event = (KeyEvent)q.mEvent; 3629 if (mView.dispatchKeyEventPreIme(event)) { 3630 return FINISH_HANDLED; 3631 } 3632 return FORWARD; 3633 } 3634 } 3635 3636 /** 3637 * Delivers input events to the ime. 3638 * Does not support pointer events. 3639 */ 3640 final class ImeInputStage extends AsyncInputStage 3641 implements InputMethodManager.FinishedInputEventCallback { 3642 public ImeInputStage(InputStage next, String traceCounter) { 3643 super(next, traceCounter); 3644 } 3645 3646 @Override 3647 protected int onProcess(QueuedInputEvent q) { 3648 if (mLastWasImTarget && !isInLocalFocusMode()) { 3649 InputMethodManager imm = InputMethodManager.peekInstance(); 3650 if (imm != null) { 3651 final InputEvent event = q.mEvent; 3652 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3653 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3654 if (result == InputMethodManager.DISPATCH_HANDLED) { 3655 return FINISH_HANDLED; 3656 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3657 return FINISH_NOT_HANDLED; 3658 } else { 3659 return DEFER; // callback will be invoked later 3660 } 3661 } 3662 } 3663 return FORWARD; 3664 } 3665 3666 @Override 3667 public void onFinishedInputEvent(Object token, boolean handled) { 3668 QueuedInputEvent q = (QueuedInputEvent)token; 3669 if (handled) { 3670 finish(q, true); 3671 return; 3672 } 3673 forward(q); 3674 } 3675 } 3676 3677 /** 3678 * Performs early processing of post-ime input events. 3679 */ 3680 final class EarlyPostImeInputStage extends InputStage { 3681 public EarlyPostImeInputStage(InputStage next) { 3682 super(next); 3683 } 3684 3685 @Override 3686 protected int onProcess(QueuedInputEvent q) { 3687 if (q.mEvent instanceof KeyEvent) { 3688 return processKeyEvent(q); 3689 } else { 3690 final int source = q.mEvent.getSource(); 3691 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3692 return processPointerEvent(q); 3693 } 3694 } 3695 return FORWARD; 3696 } 3697 3698 private int processKeyEvent(QueuedInputEvent q) { 3699 final KeyEvent event = (KeyEvent)q.mEvent; 3700 3701 // If the key's purpose is to exit touch mode then we consume it 3702 // and consider it handled. 3703 if (checkForLeavingTouchModeAndConsume(event)) { 3704 return FINISH_HANDLED; 3705 } 3706 3707 // Make sure the fallback event policy sees all keys that will be 3708 // delivered to the view hierarchy. 3709 mFallbackEventHandler.preDispatchKeyEvent(event); 3710 return FORWARD; 3711 } 3712 3713 private int processPointerEvent(QueuedInputEvent q) { 3714 final MotionEvent event = (MotionEvent)q.mEvent; 3715 3716 // Translate the pointer event for compatibility, if needed. 3717 if (mTranslator != null) { 3718 mTranslator.translateEventInScreenToAppWindow(event); 3719 } 3720 3721 // Enter touch mode on down or scroll. 3722 final int action = event.getAction(); 3723 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3724 ensureTouchMode(true); 3725 } 3726 3727 // Offset the scroll position. 3728 if (mCurScrollY != 0) { 3729 event.offsetLocation(0, mCurScrollY); 3730 } 3731 3732 // Remember the touch position for possible drag-initiation. 3733 if (event.isTouchEvent()) { 3734 mLastTouchPoint.x = event.getRawX(); 3735 mLastTouchPoint.y = event.getRawY(); 3736 } 3737 return FORWARD; 3738 } 3739 } 3740 3741 /** 3742 * Delivers post-ime input events to a native activity. 3743 */ 3744 final class NativePostImeInputStage extends AsyncInputStage 3745 implements InputQueue.FinishedInputEventCallback { 3746 public NativePostImeInputStage(InputStage next, String traceCounter) { 3747 super(next, traceCounter); 3748 } 3749 3750 @Override 3751 protected int onProcess(QueuedInputEvent q) { 3752 if (mInputQueue != null) { 3753 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3754 return DEFER; 3755 } 3756 return FORWARD; 3757 } 3758 3759 @Override 3760 public void onFinishedInputEvent(Object token, boolean handled) { 3761 QueuedInputEvent q = (QueuedInputEvent)token; 3762 if (handled) { 3763 finish(q, true); 3764 return; 3765 } 3766 forward(q); 3767 } 3768 } 3769 3770 /** 3771 * Delivers post-ime input events to the view hierarchy. 3772 */ 3773 final class ViewPostImeInputStage extends InputStage { 3774 public ViewPostImeInputStage(InputStage next) { 3775 super(next); 3776 } 3777 3778 @Override 3779 protected int onProcess(QueuedInputEvent q) { 3780 if (q.mEvent instanceof KeyEvent) { 3781 return processKeyEvent(q); 3782 } else { 3783 final int source = q.mEvent.getSource(); 3784 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3785 return processPointerEvent(q); 3786 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3787 return processTrackballEvent(q); 3788 } else { 3789 return processGenericMotionEvent(q); 3790 } 3791 } 3792 } 3793 3794 private int processKeyEvent(QueuedInputEvent q) { 3795 final KeyEvent event = (KeyEvent)q.mEvent; 3796 3797 // Deliver the key to the view hierarchy. 3798 if (mView.dispatchKeyEvent(event)) { 3799 return FINISH_HANDLED; 3800 } 3801 3802 // If the Control modifier is held, try to interpret the key as a shortcut. 3803 if (event.getAction() == KeyEvent.ACTION_DOWN 3804 && event.isCtrlPressed() 3805 && event.getRepeatCount() == 0 3806 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3807 if (mView.dispatchKeyShortcutEvent(event)) { 3808 return FINISH_HANDLED; 3809 } 3810 } 3811 3812 // Apply the fallback event policy. 3813 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3814 return FINISH_HANDLED; 3815 } 3816 3817 // Handle automatic focus changes. 3818 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3819 int direction = 0; 3820 switch (event.getKeyCode()) { 3821 case KeyEvent.KEYCODE_DPAD_LEFT: 3822 if (event.hasNoModifiers()) { 3823 direction = View.FOCUS_LEFT; 3824 } 3825 break; 3826 case KeyEvent.KEYCODE_DPAD_RIGHT: 3827 if (event.hasNoModifiers()) { 3828 direction = View.FOCUS_RIGHT; 3829 } 3830 break; 3831 case KeyEvent.KEYCODE_DPAD_UP: 3832 if (event.hasNoModifiers()) { 3833 direction = View.FOCUS_UP; 3834 } 3835 break; 3836 case KeyEvent.KEYCODE_DPAD_DOWN: 3837 if (event.hasNoModifiers()) { 3838 direction = View.FOCUS_DOWN; 3839 } 3840 break; 3841 case KeyEvent.KEYCODE_TAB: 3842 if (event.hasNoModifiers()) { 3843 direction = View.FOCUS_FORWARD; 3844 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3845 direction = View.FOCUS_BACKWARD; 3846 } 3847 break; 3848 } 3849 if (direction != 0) { 3850 View focused = mView.findFocus(); 3851 if (focused != null) { 3852 View v = focused.focusSearch(direction); 3853 if (v != null && v != focused) { 3854 // do the math the get the interesting rect 3855 // of previous focused into the coord system of 3856 // newly focused view 3857 focused.getFocusedRect(mTempRect); 3858 if (mView instanceof ViewGroup) { 3859 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3860 focused, mTempRect); 3861 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3862 v, mTempRect); 3863 } 3864 if (v.requestFocus(direction, mTempRect)) { 3865 playSoundEffect(SoundEffectConstants 3866 .getContantForFocusDirection(direction)); 3867 return FINISH_HANDLED; 3868 } 3869 } 3870 3871 // Give the focused view a last chance to handle the dpad key. 3872 if (mView.dispatchUnhandledMove(focused, direction)) { 3873 return FINISH_HANDLED; 3874 } 3875 } else { 3876 // find the best view to give focus to in this non-touch-mode with no-focus 3877 View v = focusSearch(null, direction); 3878 if (v != null && v.requestFocus(direction)) { 3879 return FINISH_HANDLED; 3880 } 3881 } 3882 } 3883 } 3884 return FORWARD; 3885 } 3886 3887 private int processPointerEvent(QueuedInputEvent q) { 3888 final MotionEvent event = (MotionEvent)q.mEvent; 3889 3890 if (mView.dispatchPointerEvent(event)) { 3891 return FINISH_HANDLED; 3892 } 3893 return FORWARD; 3894 } 3895 3896 private int processTrackballEvent(QueuedInputEvent q) { 3897 final MotionEvent event = (MotionEvent)q.mEvent; 3898 3899 if (mView.dispatchTrackballEvent(event)) { 3900 return FINISH_HANDLED; 3901 } 3902 return FORWARD; 3903 } 3904 3905 private int processGenericMotionEvent(QueuedInputEvent q) { 3906 final MotionEvent event = (MotionEvent)q.mEvent; 3907 3908 // Deliver the event to the view. 3909 if (mView.dispatchGenericMotionEvent(event)) { 3910 return FINISH_HANDLED; 3911 } 3912 return FORWARD; 3913 } 3914 } 3915 3916 /** 3917 * Performs synthesis of new input events from unhandled input events. 3918 */ 3919 final class SyntheticInputStage extends InputStage { 3920 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3921 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3922 private final SyntheticTouchNavigationHandler mTouchNavigation = 3923 new SyntheticTouchNavigationHandler(); 3924 private final SyntheticKeyHandler mKeys = new SyntheticKeyHandler(); 3925 3926 public SyntheticInputStage() { 3927 super(null); 3928 } 3929 3930 @Override 3931 protected int onProcess(QueuedInputEvent q) { 3932 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3933 if (q.mEvent instanceof MotionEvent) { 3934 final MotionEvent event = (MotionEvent)q.mEvent; 3935 final int source = event.getSource(); 3936 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3937 mTrackball.process(event); 3938 return FINISH_HANDLED; 3939 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3940 mJoystick.process(event); 3941 return FINISH_HANDLED; 3942 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3943 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3944 mTouchNavigation.process(event); 3945 return FINISH_HANDLED; 3946 } 3947 } else if (q.mEvent instanceof KeyEvent) { 3948 if (mKeys.process((KeyEvent) q.mEvent)) { 3949 return FINISH_HANDLED; 3950 } 3951 } 3952 3953 return FORWARD; 3954 } 3955 3956 @Override 3957 protected void onDeliverToNext(QueuedInputEvent q) { 3958 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 3959 // Cancel related synthetic events if any prior stage has handled the event. 3960 if (q.mEvent instanceof MotionEvent) { 3961 final MotionEvent event = (MotionEvent)q.mEvent; 3962 final int source = event.getSource(); 3963 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3964 mTrackball.cancel(event); 3965 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3966 mJoystick.cancel(event); 3967 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3968 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3969 mTouchNavigation.cancel(event); 3970 } 3971 } 3972 } 3973 super.onDeliverToNext(q); 3974 } 3975 } 3976 3977 /** 3978 * Creates dpad events from unhandled trackball movements. 3979 */ 3980 final class SyntheticTrackballHandler { 3981 private final TrackballAxis mX = new TrackballAxis(); 3982 private final TrackballAxis mY = new TrackballAxis(); 3983 private long mLastTime; 3984 3985 public void process(MotionEvent event) { 3986 // Translate the trackball event into DPAD keys and try to deliver those. 3987 long curTime = SystemClock.uptimeMillis(); 3988 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 3989 // It has been too long since the last movement, 3990 // so restart at the beginning. 3991 mX.reset(0); 3992 mY.reset(0); 3993 mLastTime = curTime; 3994 } 3995 3996 final int action = event.getAction(); 3997 final int metaState = event.getMetaState(); 3998 switch (action) { 3999 case MotionEvent.ACTION_DOWN: 4000 mX.reset(2); 4001 mY.reset(2); 4002 enqueueInputEvent(new KeyEvent(curTime, curTime, 4003 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4004 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4005 InputDevice.SOURCE_KEYBOARD)); 4006 break; 4007 case MotionEvent.ACTION_UP: 4008 mX.reset(2); 4009 mY.reset(2); 4010 enqueueInputEvent(new KeyEvent(curTime, curTime, 4011 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4012 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4013 InputDevice.SOURCE_KEYBOARD)); 4014 break; 4015 } 4016 4017 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4018 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4019 + " move=" + event.getX() 4020 + " / Y=" + mY.position + " step=" 4021 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4022 + " move=" + event.getY()); 4023 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4024 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4025 4026 // Generate DPAD events based on the trackball movement. 4027 // We pick the axis that has moved the most as the direction of 4028 // the DPAD. When we generate DPAD events for one axis, then the 4029 // other axis is reset -- we don't want to perform DPAD jumps due 4030 // to slight movements in the trackball when making major movements 4031 // along the other axis. 4032 int keycode = 0; 4033 int movement = 0; 4034 float accel = 1; 4035 if (xOff > yOff) { 4036 movement = mX.generate(); 4037 if (movement != 0) { 4038 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4039 : KeyEvent.KEYCODE_DPAD_LEFT; 4040 accel = mX.acceleration; 4041 mY.reset(2); 4042 } 4043 } else if (yOff > 0) { 4044 movement = mY.generate(); 4045 if (movement != 0) { 4046 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4047 : KeyEvent.KEYCODE_DPAD_UP; 4048 accel = mY.acceleration; 4049 mX.reset(2); 4050 } 4051 } 4052 4053 if (keycode != 0) { 4054 if (movement < 0) movement = -movement; 4055 int accelMovement = (int)(movement * accel); 4056 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4057 + " accelMovement=" + accelMovement 4058 + " accel=" + accel); 4059 if (accelMovement > movement) { 4060 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4061 + keycode); 4062 movement--; 4063 int repeatCount = accelMovement - movement; 4064 enqueueInputEvent(new KeyEvent(curTime, curTime, 4065 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4066 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4067 InputDevice.SOURCE_KEYBOARD)); 4068 } 4069 while (movement > 0) { 4070 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4071 + keycode); 4072 movement--; 4073 curTime = SystemClock.uptimeMillis(); 4074 enqueueInputEvent(new KeyEvent(curTime, curTime, 4075 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4076 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4077 InputDevice.SOURCE_KEYBOARD)); 4078 enqueueInputEvent(new KeyEvent(curTime, curTime, 4079 KeyEvent.ACTION_UP, keycode, 0, metaState, 4080 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4081 InputDevice.SOURCE_KEYBOARD)); 4082 } 4083 mLastTime = curTime; 4084 } 4085 } 4086 4087 public void cancel(MotionEvent event) { 4088 mLastTime = Integer.MIN_VALUE; 4089 4090 // If we reach this, we consumed a trackball event. 4091 // Because we will not translate the trackball event into a key event, 4092 // touch mode will not exit, so we exit touch mode here. 4093 if (mView != null && mAdded) { 4094 ensureTouchMode(false); 4095 } 4096 } 4097 } 4098 4099 /** 4100 * Maintains state information for a single trackball axis, generating 4101 * discrete (DPAD) movements based on raw trackball motion. 4102 */ 4103 static final class TrackballAxis { 4104 /** 4105 * The maximum amount of acceleration we will apply. 4106 */ 4107 static final float MAX_ACCELERATION = 20; 4108 4109 /** 4110 * The maximum amount of time (in milliseconds) between events in order 4111 * for us to consider the user to be doing fast trackball movements, 4112 * and thus apply an acceleration. 4113 */ 4114 static final long FAST_MOVE_TIME = 150; 4115 4116 /** 4117 * Scaling factor to the time (in milliseconds) between events to how 4118 * much to multiple/divide the current acceleration. When movement 4119 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4120 * FAST_MOVE_TIME it divides it. 4121 */ 4122 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4123 4124 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4125 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4126 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4127 4128 float position; 4129 float acceleration = 1; 4130 long lastMoveTime = 0; 4131 int step; 4132 int dir; 4133 int nonAccelMovement; 4134 4135 void reset(int _step) { 4136 position = 0; 4137 acceleration = 1; 4138 lastMoveTime = 0; 4139 step = _step; 4140 dir = 0; 4141 } 4142 4143 /** 4144 * Add trackball movement into the state. If the direction of movement 4145 * has been reversed, the state is reset before adding the 4146 * movement (so that you don't have to compensate for any previously 4147 * collected movement before see the result of the movement in the 4148 * new direction). 4149 * 4150 * @return Returns the absolute value of the amount of movement 4151 * collected so far. 4152 */ 4153 float collect(float off, long time, String axis) { 4154 long normTime; 4155 if (off > 0) { 4156 normTime = (long)(off * FAST_MOVE_TIME); 4157 if (dir < 0) { 4158 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4159 position = 0; 4160 step = 0; 4161 acceleration = 1; 4162 lastMoveTime = 0; 4163 } 4164 dir = 1; 4165 } else if (off < 0) { 4166 normTime = (long)((-off) * FAST_MOVE_TIME); 4167 if (dir > 0) { 4168 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4169 position = 0; 4170 step = 0; 4171 acceleration = 1; 4172 lastMoveTime = 0; 4173 } 4174 dir = -1; 4175 } else { 4176 normTime = 0; 4177 } 4178 4179 // The number of milliseconds between each movement that is 4180 // considered "normal" and will not result in any acceleration 4181 // or deceleration, scaled by the offset we have here. 4182 if (normTime > 0) { 4183 long delta = time - lastMoveTime; 4184 lastMoveTime = time; 4185 float acc = acceleration; 4186 if (delta < normTime) { 4187 // The user is scrolling rapidly, so increase acceleration. 4188 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4189 if (scale > 1) acc *= scale; 4190 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4191 + off + " normTime=" + normTime + " delta=" + delta 4192 + " scale=" + scale + " acc=" + acc); 4193 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4194 } else { 4195 // The user is scrolling slowly, so decrease acceleration. 4196 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4197 if (scale > 1) acc /= scale; 4198 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4199 + off + " normTime=" + normTime + " delta=" + delta 4200 + " scale=" + scale + " acc=" + acc); 4201 acceleration = acc > 1 ? acc : 1; 4202 } 4203 } 4204 position += off; 4205 return Math.abs(position); 4206 } 4207 4208 /** 4209 * Generate the number of discrete movement events appropriate for 4210 * the currently collected trackball movement. 4211 * 4212 * @return Returns the number of discrete movements, either positive 4213 * or negative, or 0 if there is not enough trackball movement yet 4214 * for a discrete movement. 4215 */ 4216 int generate() { 4217 int movement = 0; 4218 nonAccelMovement = 0; 4219 do { 4220 final int dir = position >= 0 ? 1 : -1; 4221 switch (step) { 4222 // If we are going to execute the first step, then we want 4223 // to do this as soon as possible instead of waiting for 4224 // a full movement, in order to make things look responsive. 4225 case 0: 4226 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4227 return movement; 4228 } 4229 movement += dir; 4230 nonAccelMovement += dir; 4231 step = 1; 4232 break; 4233 // If we have generated the first movement, then we need 4234 // to wait for the second complete trackball motion before 4235 // generating the second discrete movement. 4236 case 1: 4237 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4238 return movement; 4239 } 4240 movement += dir; 4241 nonAccelMovement += dir; 4242 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4243 step = 2; 4244 break; 4245 // After the first two, we generate discrete movements 4246 // consistently with the trackball, applying an acceleration 4247 // if the trackball is moving quickly. This is a simple 4248 // acceleration on top of what we already compute based 4249 // on how quickly the wheel is being turned, to apply 4250 // a longer increasing acceleration to continuous movement 4251 // in one direction. 4252 default: 4253 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4254 return movement; 4255 } 4256 movement += dir; 4257 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4258 float acc = acceleration; 4259 acc *= 1.1f; 4260 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4261 break; 4262 } 4263 } while (true); 4264 } 4265 } 4266 4267 /** 4268 * Creates dpad events from unhandled joystick movements. 4269 */ 4270 final class SyntheticJoystickHandler extends Handler { 4271 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4272 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4273 4274 private int mLastXDirection; 4275 private int mLastYDirection; 4276 private int mLastXKeyCode; 4277 private int mLastYKeyCode; 4278 4279 public SyntheticJoystickHandler() { 4280 super(true); 4281 } 4282 4283 @Override 4284 public void handleMessage(Message msg) { 4285 switch (msg.what) { 4286 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4287 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4288 KeyEvent oldEvent = (KeyEvent)msg.obj; 4289 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4290 SystemClock.uptimeMillis(), 4291 oldEvent.getRepeatCount() + 1); 4292 if (mAttachInfo.mHasWindowFocus) { 4293 enqueueInputEvent(e); 4294 Message m = obtainMessage(msg.what, e); 4295 m.setAsynchronous(true); 4296 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4297 } 4298 } break; 4299 } 4300 } 4301 4302 public void process(MotionEvent event) { 4303 update(event, true); 4304 } 4305 4306 public void cancel(MotionEvent event) { 4307 update(event, false); 4308 } 4309 4310 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4311 final long time = event.getEventTime(); 4312 final int metaState = event.getMetaState(); 4313 final int deviceId = event.getDeviceId(); 4314 final int source = event.getSource(); 4315 4316 int xDirection = joystickAxisValueToDirection( 4317 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4318 if (xDirection == 0) { 4319 xDirection = joystickAxisValueToDirection(event.getX()); 4320 } 4321 4322 int yDirection = joystickAxisValueToDirection( 4323 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4324 if (yDirection == 0) { 4325 yDirection = joystickAxisValueToDirection(event.getY()); 4326 } 4327 4328 if (xDirection != mLastXDirection) { 4329 if (mLastXKeyCode != 0) { 4330 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4331 enqueueInputEvent(new KeyEvent(time, time, 4332 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4333 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4334 mLastXKeyCode = 0; 4335 } 4336 4337 mLastXDirection = xDirection; 4338 4339 if (xDirection != 0 && synthesizeNewKeys) { 4340 mLastXKeyCode = xDirection > 0 4341 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4342 final KeyEvent e = new KeyEvent(time, time, 4343 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4344 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4345 enqueueInputEvent(e); 4346 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4347 m.setAsynchronous(true); 4348 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4349 } 4350 } 4351 4352 if (yDirection != mLastYDirection) { 4353 if (mLastYKeyCode != 0) { 4354 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4355 enqueueInputEvent(new KeyEvent(time, time, 4356 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4357 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4358 mLastYKeyCode = 0; 4359 } 4360 4361 mLastYDirection = yDirection; 4362 4363 if (yDirection != 0 && synthesizeNewKeys) { 4364 mLastYKeyCode = yDirection > 0 4365 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4366 final KeyEvent e = new KeyEvent(time, time, 4367 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4368 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4369 enqueueInputEvent(e); 4370 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4371 m.setAsynchronous(true); 4372 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4373 } 4374 } 4375 } 4376 4377 private int joystickAxisValueToDirection(float value) { 4378 if (value >= 0.5f) { 4379 return 1; 4380 } else if (value <= -0.5f) { 4381 return -1; 4382 } else { 4383 return 0; 4384 } 4385 } 4386 } 4387 4388 /** 4389 * Creates dpad events from unhandled touch navigation movements. 4390 */ 4391 final class SyntheticTouchNavigationHandler extends Handler { 4392 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4393 private static final boolean LOCAL_DEBUG = false; 4394 4395 // Assumed nominal width and height in millimeters of a touch navigation pad, 4396 // if no resolution information is available from the input system. 4397 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4398 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4399 4400 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4401 4402 // The nominal distance traveled to move by one unit. 4403 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4404 4405 // Minimum and maximum fling velocity in ticks per second. 4406 // The minimum velocity should be set such that we perform enough ticks per 4407 // second that the fling appears to be fluid. For example, if we set the minimum 4408 // to 2 ticks per second, then there may be up to half a second delay between the next 4409 // to last and last ticks which is noticeably discrete and jerky. This value should 4410 // probably not be set to anything less than about 4. 4411 // If fling accuracy is a problem then consider tuning the tick distance instead. 4412 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4413 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4414 4415 // Fling velocity decay factor applied after each new key is emitted. 4416 // This parameter controls the deceleration and overall duration of the fling. 4417 // The fling stops automatically when its velocity drops below the minimum 4418 // fling velocity defined above. 4419 private static final float FLING_TICK_DECAY = 0.8f; 4420 4421 /* The input device that we are tracking. */ 4422 4423 private int mCurrentDeviceId = -1; 4424 private int mCurrentSource; 4425 private boolean mCurrentDeviceSupported; 4426 4427 /* Configuration for the current input device. */ 4428 4429 // The scaled tick distance. A movement of this amount should generally translate 4430 // into a single dpad event in a given direction. 4431 private float mConfigTickDistance; 4432 4433 // The minimum and maximum scaled fling velocity. 4434 private float mConfigMinFlingVelocity; 4435 private float mConfigMaxFlingVelocity; 4436 4437 /* Tracking state. */ 4438 4439 // The velocity tracker for detecting flings. 4440 private VelocityTracker mVelocityTracker; 4441 4442 // The active pointer id, or -1 if none. 4443 private int mActivePointerId = -1; 4444 4445 // Time and location where tracking started. 4446 private long mStartTime; 4447 private float mStartX; 4448 private float mStartY; 4449 4450 // Most recently observed position. 4451 private float mLastX; 4452 private float mLastY; 4453 4454 // Accumulated movement delta since the last direction key was sent. 4455 private float mAccumulatedX; 4456 private float mAccumulatedY; 4457 4458 // Set to true if any movement was delivered to the app. 4459 // Implies that tap slop was exceeded. 4460 private boolean mConsumedMovement; 4461 4462 // The most recently sent key down event. 4463 // The keycode remains set until the direction changes or a fling ends 4464 // so that repeated key events may be generated as required. 4465 private long mPendingKeyDownTime; 4466 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4467 private int mPendingKeyRepeatCount; 4468 private int mPendingKeyMetaState; 4469 4470 // The current fling velocity while a fling is in progress. 4471 private boolean mFlinging; 4472 private float mFlingVelocity; 4473 4474 // The last time a confirm key was pressed on the touch nav device 4475 private long mLastConfirmKeyTime = Long.MAX_VALUE; 4476 4477 public SyntheticTouchNavigationHandler() { 4478 super(true); 4479 } 4480 4481 public void process(MotionEvent event) { 4482 // Update the current device information. 4483 final long time = event.getEventTime(); 4484 final int deviceId = event.getDeviceId(); 4485 final int source = event.getSource(); 4486 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4487 finishKeys(time); 4488 finishTracking(time); 4489 mCurrentDeviceId = deviceId; 4490 mCurrentSource = source; 4491 mCurrentDeviceSupported = false; 4492 InputDevice device = event.getDevice(); 4493 if (device != null) { 4494 // In order to support an input device, we must know certain 4495 // characteristics about it, such as its size and resolution. 4496 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4497 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4498 if (xRange != null && yRange != null) { 4499 mCurrentDeviceSupported = true; 4500 4501 // Infer the resolution if it not actually known. 4502 float xRes = xRange.getResolution(); 4503 if (xRes <= 0) { 4504 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4505 } 4506 float yRes = yRange.getResolution(); 4507 if (yRes <= 0) { 4508 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4509 } 4510 float nominalRes = (xRes + yRes) * 0.5f; 4511 4512 // Precompute all of the configuration thresholds we will need. 4513 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4514 mConfigMinFlingVelocity = 4515 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4516 mConfigMaxFlingVelocity = 4517 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4518 4519 if (LOCAL_DEBUG) { 4520 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4521 + " (" + Integer.toHexString(mCurrentSource) + "): " 4522 + ", mConfigTickDistance=" + mConfigTickDistance 4523 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4524 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4525 } 4526 } 4527 } 4528 } 4529 if (!mCurrentDeviceSupported) { 4530 return; 4531 } 4532 4533 // Handle the event. 4534 final int action = event.getActionMasked(); 4535 switch (action) { 4536 case MotionEvent.ACTION_DOWN: { 4537 boolean caughtFling = mFlinging; 4538 finishKeys(time); 4539 finishTracking(time); 4540 mActivePointerId = event.getPointerId(0); 4541 mVelocityTracker = VelocityTracker.obtain(); 4542 mVelocityTracker.addMovement(event); 4543 mStartTime = time; 4544 mStartX = event.getX(); 4545 mStartY = event.getY(); 4546 mLastX = mStartX; 4547 mLastY = mStartY; 4548 mAccumulatedX = 0; 4549 mAccumulatedY = 0; 4550 4551 // If we caught a fling, then pretend that the tap slop has already 4552 // been exceeded to suppress taps whose only purpose is to stop the fling. 4553 mConsumedMovement = caughtFling; 4554 break; 4555 } 4556 4557 case MotionEvent.ACTION_MOVE: 4558 case MotionEvent.ACTION_UP: { 4559 if (mActivePointerId < 0) { 4560 break; 4561 } 4562 final int index = event.findPointerIndex(mActivePointerId); 4563 if (index < 0) { 4564 finishKeys(time); 4565 finishTracking(time); 4566 break; 4567 } 4568 4569 mVelocityTracker.addMovement(event); 4570 final float x = event.getX(index); 4571 final float y = event.getY(index); 4572 mAccumulatedX += x - mLastX; 4573 mAccumulatedY += y - mLastY; 4574 mLastX = x; 4575 mLastY = y; 4576 4577 // Consume any accumulated movement so far. 4578 final int metaState = event.getMetaState(); 4579 consumeAccumulatedMovement(time, metaState); 4580 4581 // Detect taps and flings. 4582 if (action == MotionEvent.ACTION_UP) { 4583 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4584 // It might be a fling. 4585 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4586 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4587 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4588 if (!startFling(time, vx, vy)) { 4589 finishKeys(time); 4590 } 4591 } 4592 finishTracking(time); 4593 } 4594 break; 4595 } 4596 4597 case MotionEvent.ACTION_CANCEL: { 4598 finishKeys(time); 4599 finishTracking(time); 4600 break; 4601 } 4602 } 4603 } 4604 4605 public void cancel(MotionEvent event) { 4606 if (mCurrentDeviceId == event.getDeviceId() 4607 && mCurrentSource == event.getSource()) { 4608 final long time = event.getEventTime(); 4609 finishKeys(time); 4610 finishTracking(time); 4611 } 4612 } 4613 4614 private void finishKeys(long time) { 4615 cancelFling(); 4616 sendKeyUp(time); 4617 } 4618 4619 private void finishTracking(long time) { 4620 if (mActivePointerId >= 0) { 4621 mActivePointerId = -1; 4622 mVelocityTracker.recycle(); 4623 mVelocityTracker = null; 4624 } 4625 } 4626 4627 private void consumeAccumulatedMovement(long time, int metaState) { 4628 final float absX = Math.abs(mAccumulatedX); 4629 final float absY = Math.abs(mAccumulatedY); 4630 if (absX >= absY) { 4631 if (absX >= mConfigTickDistance) { 4632 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4633 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4634 mAccumulatedY = 0; 4635 mConsumedMovement = true; 4636 } 4637 } else { 4638 if (absY >= mConfigTickDistance) { 4639 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4640 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4641 mAccumulatedX = 0; 4642 mConsumedMovement = true; 4643 } 4644 } 4645 } 4646 4647 private float consumeAccumulatedMovement(long time, int metaState, 4648 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4649 while (accumulator <= -mConfigTickDistance) { 4650 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4651 accumulator += mConfigTickDistance; 4652 } 4653 while (accumulator >= mConfigTickDistance) { 4654 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4655 accumulator -= mConfigTickDistance; 4656 } 4657 return accumulator; 4658 } 4659 4660 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4661 if (mPendingKeyCode != keyCode) { 4662 sendKeyUp(time); 4663 mPendingKeyDownTime = time; 4664 mPendingKeyCode = keyCode; 4665 mPendingKeyRepeatCount = 0; 4666 } else { 4667 mPendingKeyRepeatCount += 1; 4668 } 4669 mPendingKeyMetaState = metaState; 4670 4671 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4672 // but it doesn't quite make sense when simulating the events in this way. 4673 if (LOCAL_DEBUG) { 4674 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4675 + ", repeatCount=" + mPendingKeyRepeatCount 4676 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4677 } 4678 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4679 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4680 mPendingKeyMetaState, mCurrentDeviceId, 4681 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4682 } 4683 4684 private void sendKeyUp(long time) { 4685 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4686 if (LOCAL_DEBUG) { 4687 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4688 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4689 } 4690 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4691 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4692 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4693 mCurrentSource)); 4694 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4695 } 4696 } 4697 4698 private boolean startFling(long time, float vx, float vy) { 4699 if (LOCAL_DEBUG) { 4700 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4701 + ", min=" + mConfigMinFlingVelocity); 4702 } 4703 4704 // Flings must be oriented in the same direction as the preceding movements. 4705 switch (mPendingKeyCode) { 4706 case KeyEvent.KEYCODE_DPAD_LEFT: 4707 if (-vx >= mConfigMinFlingVelocity 4708 && Math.abs(vy) < mConfigMinFlingVelocity) { 4709 mFlingVelocity = -vx; 4710 break; 4711 } 4712 return false; 4713 4714 case KeyEvent.KEYCODE_DPAD_RIGHT: 4715 if (vx >= mConfigMinFlingVelocity 4716 && Math.abs(vy) < mConfigMinFlingVelocity) { 4717 mFlingVelocity = vx; 4718 break; 4719 } 4720 return false; 4721 4722 case KeyEvent.KEYCODE_DPAD_UP: 4723 if (-vy >= mConfigMinFlingVelocity 4724 && Math.abs(vx) < mConfigMinFlingVelocity) { 4725 mFlingVelocity = -vy; 4726 break; 4727 } 4728 return false; 4729 4730 case KeyEvent.KEYCODE_DPAD_DOWN: 4731 if (vy >= mConfigMinFlingVelocity 4732 && Math.abs(vx) < mConfigMinFlingVelocity) { 4733 mFlingVelocity = vy; 4734 break; 4735 } 4736 return false; 4737 } 4738 4739 // Post the first fling event. 4740 mFlinging = postFling(time); 4741 return mFlinging; 4742 } 4743 4744 private boolean postFling(long time) { 4745 // The idea here is to estimate the time when the pointer would have 4746 // traveled one tick distance unit given the current fling velocity. 4747 // This effect creates continuity of motion. 4748 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4749 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4750 postAtTime(mFlingRunnable, time + delay); 4751 if (LOCAL_DEBUG) { 4752 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4753 + mFlingVelocity + ", delay=" + delay 4754 + ", keyCode=" + mPendingKeyCode); 4755 } 4756 return true; 4757 } 4758 return false; 4759 } 4760 4761 private void cancelFling() { 4762 if (mFlinging) { 4763 removeCallbacks(mFlingRunnable); 4764 mFlinging = false; 4765 } 4766 } 4767 4768 private final Runnable mFlingRunnable = new Runnable() { 4769 @Override 4770 public void run() { 4771 final long time = SystemClock.uptimeMillis(); 4772 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4773 mFlingVelocity *= FLING_TICK_DECAY; 4774 if (!postFling(time)) { 4775 mFlinging = false; 4776 finishKeys(time); 4777 } 4778 } 4779 }; 4780 } 4781 4782 final class SyntheticKeyHandler { 4783 4784 public boolean process(KeyEvent event) { 4785 // In some locales (like Japan) controllers use B for confirm and A for back, rather 4786 // than vice versa, so we need to special case this here since the input system itself 4787 // is not locale-aware. 4788 int keyCode; 4789 switch(event.getKeyCode()) { 4790 case KeyEvent.KEYCODE_BUTTON_A: 4791 case KeyEvent.KEYCODE_BUTTON_C: 4792 case KeyEvent.KEYCODE_BUTTON_X: 4793 case KeyEvent.KEYCODE_BUTTON_Z: 4794 keyCode = mFlipControllerFallbackKeys ? 4795 KeyEvent.KEYCODE_BACK : KeyEvent.KEYCODE_DPAD_CENTER; 4796 break; 4797 case KeyEvent.KEYCODE_BUTTON_B: 4798 case KeyEvent.KEYCODE_BUTTON_Y: 4799 keyCode = mFlipControllerFallbackKeys ? 4800 KeyEvent.KEYCODE_DPAD_CENTER : KeyEvent.KEYCODE_BACK; 4801 break; 4802 case KeyEvent.KEYCODE_BUTTON_THUMBL: 4803 case KeyEvent.KEYCODE_BUTTON_THUMBR: 4804 case KeyEvent.KEYCODE_BUTTON_START: 4805 case KeyEvent.KEYCODE_BUTTON_1: 4806 case KeyEvent.KEYCODE_BUTTON_2: 4807 case KeyEvent.KEYCODE_BUTTON_3: 4808 case KeyEvent.KEYCODE_BUTTON_4: 4809 case KeyEvent.KEYCODE_BUTTON_5: 4810 case KeyEvent.KEYCODE_BUTTON_6: 4811 case KeyEvent.KEYCODE_BUTTON_7: 4812 case KeyEvent.KEYCODE_BUTTON_8: 4813 case KeyEvent.KEYCODE_BUTTON_9: 4814 case KeyEvent.KEYCODE_BUTTON_10: 4815 case KeyEvent.KEYCODE_BUTTON_11: 4816 case KeyEvent.KEYCODE_BUTTON_12: 4817 case KeyEvent.KEYCODE_BUTTON_13: 4818 case KeyEvent.KEYCODE_BUTTON_14: 4819 case KeyEvent.KEYCODE_BUTTON_15: 4820 case KeyEvent.KEYCODE_BUTTON_16: 4821 keyCode = KeyEvent.KEYCODE_DPAD_CENTER; 4822 break; 4823 case KeyEvent.KEYCODE_BUTTON_SELECT: 4824 case KeyEvent.KEYCODE_BUTTON_MODE: 4825 keyCode = KeyEvent.KEYCODE_MENU; 4826 default: 4827 return false; 4828 } 4829 4830 enqueueInputEvent(new KeyEvent(event.getDownTime(), event.getEventTime(), 4831 event.getAction(), keyCode, event.getRepeatCount(), event.getMetaState(), 4832 event.getDeviceId(), event.getScanCode(), 4833 event.getFlags() | KeyEvent.FLAG_FALLBACK, event.getSource())); 4834 return true; 4835 } 4836 4837 } 4838 4839 /** 4840 * Returns true if the key is used for keyboard navigation. 4841 * @param keyEvent The key event. 4842 * @return True if the key is used for keyboard navigation. 4843 */ 4844 private static boolean isNavigationKey(KeyEvent keyEvent) { 4845 switch (keyEvent.getKeyCode()) { 4846 case KeyEvent.KEYCODE_DPAD_LEFT: 4847 case KeyEvent.KEYCODE_DPAD_RIGHT: 4848 case KeyEvent.KEYCODE_DPAD_UP: 4849 case KeyEvent.KEYCODE_DPAD_DOWN: 4850 case KeyEvent.KEYCODE_DPAD_CENTER: 4851 case KeyEvent.KEYCODE_PAGE_UP: 4852 case KeyEvent.KEYCODE_PAGE_DOWN: 4853 case KeyEvent.KEYCODE_MOVE_HOME: 4854 case KeyEvent.KEYCODE_MOVE_END: 4855 case KeyEvent.KEYCODE_TAB: 4856 case KeyEvent.KEYCODE_SPACE: 4857 case KeyEvent.KEYCODE_ENTER: 4858 return true; 4859 } 4860 return false; 4861 } 4862 4863 /** 4864 * Returns true if the key is used for typing. 4865 * @param keyEvent The key event. 4866 * @return True if the key is used for typing. 4867 */ 4868 private static boolean isTypingKey(KeyEvent keyEvent) { 4869 return keyEvent.getUnicodeChar() > 0; 4870 } 4871 4872 /** 4873 * See if the key event means we should leave touch mode (and leave touch mode if so). 4874 * @param event The key event. 4875 * @return Whether this key event should be consumed (meaning the act of 4876 * leaving touch mode alone is considered the event). 4877 */ 4878 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4879 // Only relevant in touch mode. 4880 if (!mAttachInfo.mInTouchMode) { 4881 return false; 4882 } 4883 4884 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4885 final int action = event.getAction(); 4886 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4887 return false; 4888 } 4889 4890 // Don't leave touch mode if the IME told us not to. 4891 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4892 return false; 4893 } 4894 4895 // If the key can be used for keyboard navigation then leave touch mode 4896 // and select a focused view if needed (in ensureTouchMode). 4897 // When a new focused view is selected, we consume the navigation key because 4898 // navigation doesn't make much sense unless a view already has focus so 4899 // the key's purpose is to set focus. 4900 if (isNavigationKey(event)) { 4901 return ensureTouchMode(false); 4902 } 4903 4904 // If the key can be used for typing then leave touch mode 4905 // and select a focused view if needed (in ensureTouchMode). 4906 // Always allow the view to process the typing key. 4907 if (isTypingKey(event)) { 4908 ensureTouchMode(false); 4909 return false; 4910 } 4911 4912 return false; 4913 } 4914 4915 /* drag/drop */ 4916 void setLocalDragState(Object obj) { 4917 mLocalDragState = obj; 4918 } 4919 4920 private void handleDragEvent(DragEvent event) { 4921 // From the root, only drag start/end/location are dispatched. entered/exited 4922 // are determined and dispatched by the viewgroup hierarchy, who then report 4923 // that back here for ultimate reporting back to the framework. 4924 if (mView != null && mAdded) { 4925 final int what = event.mAction; 4926 4927 if (what == DragEvent.ACTION_DRAG_EXITED) { 4928 // A direct EXITED event means that the window manager knows we've just crossed 4929 // a window boundary, so the current drag target within this one must have 4930 // just been exited. Send it the usual notifications and then we're done 4931 // for now. 4932 mView.dispatchDragEvent(event); 4933 } else { 4934 // Cache the drag description when the operation starts, then fill it in 4935 // on subsequent calls as a convenience 4936 if (what == DragEvent.ACTION_DRAG_STARTED) { 4937 mCurrentDragView = null; // Start the current-recipient tracking 4938 mDragDescription = event.mClipDescription; 4939 } else { 4940 event.mClipDescription = mDragDescription; 4941 } 4942 4943 // For events with a [screen] location, translate into window coordinates 4944 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4945 mDragPoint.set(event.mX, event.mY); 4946 if (mTranslator != null) { 4947 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4948 } 4949 4950 if (mCurScrollY != 0) { 4951 mDragPoint.offset(0, mCurScrollY); 4952 } 4953 4954 event.mX = mDragPoint.x; 4955 event.mY = mDragPoint.y; 4956 } 4957 4958 // Remember who the current drag target is pre-dispatch 4959 final View prevDragView = mCurrentDragView; 4960 4961 // Now dispatch the drag/drop event 4962 boolean result = mView.dispatchDragEvent(event); 4963 4964 // If we changed apparent drag target, tell the OS about it 4965 if (prevDragView != mCurrentDragView) { 4966 try { 4967 if (prevDragView != null) { 4968 mWindowSession.dragRecipientExited(mWindow); 4969 } 4970 if (mCurrentDragView != null) { 4971 mWindowSession.dragRecipientEntered(mWindow); 4972 } 4973 } catch (RemoteException e) { 4974 Slog.e(TAG, "Unable to note drag target change"); 4975 } 4976 } 4977 4978 // Report the drop result when we're done 4979 if (what == DragEvent.ACTION_DROP) { 4980 mDragDescription = null; 4981 try { 4982 Log.i(TAG, "Reporting drop result: " + result); 4983 mWindowSession.reportDropResult(mWindow, result); 4984 } catch (RemoteException e) { 4985 Log.e(TAG, "Unable to report drop result"); 4986 } 4987 } 4988 4989 // When the drag operation ends, release any local state object 4990 // that may have been in use 4991 if (what == DragEvent.ACTION_DRAG_ENDED) { 4992 setLocalDragState(null); 4993 } 4994 } 4995 } 4996 event.recycle(); 4997 } 4998 4999 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5000 if (mSeq != args.seq) { 5001 // The sequence has changed, so we need to update our value and make 5002 // sure to do a traversal afterward so the window manager is given our 5003 // most recent data. 5004 mSeq = args.seq; 5005 mAttachInfo.mForceReportNewAttributes = true; 5006 scheduleTraversals(); 5007 } 5008 if (mView == null) return; 5009 if (args.localChanges != 0) { 5010 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5011 } 5012 if (mAttachInfo != null) { 5013 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5014 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5015 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5016 mView.dispatchSystemUiVisibilityChanged(visibility); 5017 } 5018 } 5019 } 5020 5021 public void handleDispatchDoneAnimating() { 5022 if (mWindowsAnimating) { 5023 mWindowsAnimating = false; 5024 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5025 scheduleTraversals(); 5026 } 5027 } 5028 } 5029 5030 public void getLastTouchPoint(Point outLocation) { 5031 outLocation.x = (int) mLastTouchPoint.x; 5032 outLocation.y = (int) mLastTouchPoint.y; 5033 } 5034 5035 public void setDragFocus(View newDragTarget) { 5036 if (mCurrentDragView != newDragTarget) { 5037 mCurrentDragView = newDragTarget; 5038 } 5039 } 5040 5041 private AudioManager getAudioManager() { 5042 if (mView == null) { 5043 throw new IllegalStateException("getAudioManager called when there is no mView"); 5044 } 5045 if (mAudioManager == null) { 5046 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5047 } 5048 return mAudioManager; 5049 } 5050 5051 public AccessibilityInteractionController getAccessibilityInteractionController() { 5052 if (mView == null) { 5053 throw new IllegalStateException("getAccessibilityInteractionController" 5054 + " called when there is no mView"); 5055 } 5056 if (mAccessibilityInteractionController == null) { 5057 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5058 } 5059 return mAccessibilityInteractionController; 5060 } 5061 5062 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5063 boolean insetsPending) throws RemoteException { 5064 5065 float appScale = mAttachInfo.mApplicationScale; 5066 boolean restore = false; 5067 if (params != null && mTranslator != null) { 5068 restore = true; 5069 params.backup(); 5070 mTranslator.translateWindowLayout(params); 5071 } 5072 if (params != null) { 5073 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5074 } 5075 mPendingConfiguration.seq = 0; 5076 //Log.d(TAG, ">>>>>> CALLING relayout"); 5077 if (params != null && mOrigWindowType != params.type) { 5078 // For compatibility with old apps, don't crash here. 5079 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5080 Slog.w(TAG, "Window type can not be changed after " 5081 + "the window is added; ignoring change of " + mView); 5082 params.type = mOrigWindowType; 5083 } 5084 } 5085 int relayoutResult = mWindowSession.relayout( 5086 mWindow, mSeq, params, 5087 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5088 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5089 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5090 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5091 mPendingConfiguration, mSurface); 5092 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5093 if (restore) { 5094 params.restore(); 5095 } 5096 5097 if (mTranslator != null) { 5098 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5099 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5100 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5101 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5102 } 5103 return relayoutResult; 5104 } 5105 5106 /** 5107 * {@inheritDoc} 5108 */ 5109 @Override 5110 public void playSoundEffect(int effectId) { 5111 checkThread(); 5112 5113 if (mMediaDisabled) { 5114 return; 5115 } 5116 5117 try { 5118 final AudioManager audioManager = getAudioManager(); 5119 5120 switch (effectId) { 5121 case SoundEffectConstants.CLICK: 5122 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5123 return; 5124 case SoundEffectConstants.NAVIGATION_DOWN: 5125 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5126 return; 5127 case SoundEffectConstants.NAVIGATION_LEFT: 5128 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5129 return; 5130 case SoundEffectConstants.NAVIGATION_RIGHT: 5131 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5132 return; 5133 case SoundEffectConstants.NAVIGATION_UP: 5134 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5135 return; 5136 default: 5137 throw new IllegalArgumentException("unknown effect id " + effectId + 5138 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5139 } 5140 } catch (IllegalStateException e) { 5141 // Exception thrown by getAudioManager() when mView is null 5142 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5143 e.printStackTrace(); 5144 } 5145 } 5146 5147 /** 5148 * {@inheritDoc} 5149 */ 5150 @Override 5151 public boolean performHapticFeedback(int effectId, boolean always) { 5152 try { 5153 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5154 } catch (RemoteException e) { 5155 return false; 5156 } 5157 } 5158 5159 /** 5160 * {@inheritDoc} 5161 */ 5162 @Override 5163 public View focusSearch(View focused, int direction) { 5164 checkThread(); 5165 if (!(mView instanceof ViewGroup)) { 5166 return null; 5167 } 5168 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5169 } 5170 5171 public void debug() { 5172 mView.debug(); 5173 } 5174 5175 public void dumpGfxInfo(int[] info) { 5176 info[0] = info[1] = 0; 5177 if (mView != null) { 5178 getGfxInfo(mView, info); 5179 } 5180 } 5181 5182 private static void getGfxInfo(View view, int[] info) { 5183 DisplayList displayList = view.mDisplayList; 5184 info[0]++; 5185 if (displayList != null) { 5186 info[1] += displayList.getSize(); 5187 } 5188 5189 if (view instanceof ViewGroup) { 5190 ViewGroup group = (ViewGroup) view; 5191 5192 int count = group.getChildCount(); 5193 for (int i = 0; i < count; i++) { 5194 getGfxInfo(group.getChildAt(i), info); 5195 } 5196 } 5197 } 5198 5199 /** 5200 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5201 * @return True, request has been queued. False, request has been completed. 5202 */ 5203 boolean die(boolean immediate) { 5204 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5205 // done by dispatchDetachedFromWindow will cause havoc on return. 5206 if (immediate && !mIsInTraversal) { 5207 doDie(); 5208 return false; 5209 } 5210 5211 if (!mIsDrawing) { 5212 destroyHardwareRenderer(); 5213 } else { 5214 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5215 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5216 } 5217 mHandler.sendEmptyMessage(MSG_DIE); 5218 return true; 5219 } 5220 5221 void doDie() { 5222 checkThread(); 5223 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5224 synchronized (this) { 5225 if (mRemoved) { 5226 return; 5227 } 5228 mRemoved = true; 5229 if (mAdded) { 5230 dispatchDetachedFromWindow(); 5231 } 5232 5233 if (mAdded && !mFirst) { 5234 invalidateDisplayLists(); 5235 destroyHardwareRenderer(); 5236 5237 if (mView != null) { 5238 int viewVisibility = mView.getVisibility(); 5239 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5240 if (mWindowAttributesChanged || viewVisibilityChanged) { 5241 // If layout params have been changed, first give them 5242 // to the window manager to make sure it has the correct 5243 // animation info. 5244 try { 5245 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5246 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5247 mWindowSession.finishDrawing(mWindow); 5248 } 5249 } catch (RemoteException e) { 5250 } 5251 } 5252 5253 mSurface.release(); 5254 } 5255 } 5256 5257 mAdded = false; 5258 } 5259 WindowManagerGlobal.getInstance().doRemoveView(this); 5260 } 5261 5262 public void requestUpdateConfiguration(Configuration config) { 5263 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5264 mHandler.sendMessage(msg); 5265 } 5266 5267 public void loadSystemProperties() { 5268 mHandler.post(new Runnable() { 5269 @Override 5270 public void run() { 5271 // Profiling 5272 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5273 profileRendering(mAttachInfo.mHasWindowFocus); 5274 5275 // Media (used by sound effects) 5276 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5277 5278 // Hardware rendering 5279 if (mAttachInfo.mHardwareRenderer != null) { 5280 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5281 invalidate(); 5282 } 5283 } 5284 5285 // Layout debugging 5286 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5287 if (layout != mAttachInfo.mDebugLayout) { 5288 mAttachInfo.mDebugLayout = layout; 5289 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5290 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5291 } 5292 } 5293 } 5294 }); 5295 } 5296 5297 private void destroyHardwareRenderer() { 5298 AttachInfo attachInfo = mAttachInfo; 5299 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5300 5301 if (hardwareRenderer != null) { 5302 if (mView != null) { 5303 hardwareRenderer.destroyHardwareResources(mView); 5304 } 5305 hardwareRenderer.destroy(true); 5306 hardwareRenderer.setRequested(false); 5307 5308 attachInfo.mHardwareRenderer = null; 5309 attachInfo.mHardwareAccelerated = false; 5310 } 5311 } 5312 5313 public void dispatchFinishInputConnection(InputConnection connection) { 5314 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5315 mHandler.sendMessage(msg); 5316 } 5317 5318 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5319 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5320 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5321 + " contentInsets=" + contentInsets.toShortString() 5322 + " visibleInsets=" + visibleInsets.toShortString() 5323 + " reportDraw=" + reportDraw); 5324 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5325 if (mTranslator != null) { 5326 mTranslator.translateRectInScreenToAppWindow(frame); 5327 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5328 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5329 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5330 } 5331 SomeArgs args = SomeArgs.obtain(); 5332 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5333 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5334 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5335 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5336 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5337 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5338 msg.obj = args; 5339 mHandler.sendMessage(msg); 5340 } 5341 5342 public void dispatchMoved(int newX, int newY) { 5343 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5344 if (mTranslator != null) { 5345 PointF point = new PointF(newX, newY); 5346 mTranslator.translatePointInScreenToAppWindow(point); 5347 newX = (int) (point.x + 0.5); 5348 newY = (int) (point.y + 0.5); 5349 } 5350 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5351 mHandler.sendMessage(msg); 5352 } 5353 5354 /** 5355 * Represents a pending input event that is waiting in a queue. 5356 * 5357 * Input events are processed in serial order by the timestamp specified by 5358 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5359 * one input event to the application at a time and waits for the application 5360 * to finish handling it before delivering the next one. 5361 * 5362 * However, because the application or IME can synthesize and inject multiple 5363 * key events at a time without going through the input dispatcher, we end up 5364 * needing a queue on the application's side. 5365 */ 5366 private static final class QueuedInputEvent { 5367 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5368 public static final int FLAG_DEFERRED = 1 << 1; 5369 public static final int FLAG_FINISHED = 1 << 2; 5370 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5371 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5372 5373 public QueuedInputEvent mNext; 5374 5375 public InputEvent mEvent; 5376 public InputEventReceiver mReceiver; 5377 public int mFlags; 5378 5379 public boolean shouldSkipIme() { 5380 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5381 return true; 5382 } 5383 return mEvent instanceof MotionEvent 5384 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5385 } 5386 } 5387 5388 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5389 InputEventReceiver receiver, int flags) { 5390 QueuedInputEvent q = mQueuedInputEventPool; 5391 if (q != null) { 5392 mQueuedInputEventPoolSize -= 1; 5393 mQueuedInputEventPool = q.mNext; 5394 q.mNext = null; 5395 } else { 5396 q = new QueuedInputEvent(); 5397 } 5398 5399 q.mEvent = event; 5400 q.mReceiver = receiver; 5401 q.mFlags = flags; 5402 return q; 5403 } 5404 5405 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5406 q.mEvent = null; 5407 q.mReceiver = null; 5408 5409 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5410 mQueuedInputEventPoolSize += 1; 5411 q.mNext = mQueuedInputEventPool; 5412 mQueuedInputEventPool = q; 5413 } 5414 } 5415 5416 void enqueueInputEvent(InputEvent event) { 5417 enqueueInputEvent(event, null, 0, false); 5418 } 5419 5420 void enqueueInputEvent(InputEvent event, 5421 InputEventReceiver receiver, int flags, boolean processImmediately) { 5422 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5423 5424 // Always enqueue the input event in order, regardless of its time stamp. 5425 // We do this because the application or the IME may inject key events 5426 // in response to touch events and we want to ensure that the injected keys 5427 // are processed in the order they were received and we cannot trust that 5428 // the time stamp of injected events are monotonic. 5429 QueuedInputEvent last = mPendingInputEventTail; 5430 if (last == null) { 5431 mPendingInputEventHead = q; 5432 mPendingInputEventTail = q; 5433 } else { 5434 last.mNext = q; 5435 mPendingInputEventTail = q; 5436 } 5437 mPendingInputEventCount += 1; 5438 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5439 mPendingInputEventCount); 5440 5441 if (processImmediately) { 5442 doProcessInputEvents(); 5443 } else { 5444 scheduleProcessInputEvents(); 5445 } 5446 } 5447 5448 private void scheduleProcessInputEvents() { 5449 if (!mProcessInputEventsScheduled) { 5450 mProcessInputEventsScheduled = true; 5451 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5452 msg.setAsynchronous(true); 5453 mHandler.sendMessage(msg); 5454 } 5455 } 5456 5457 void doProcessInputEvents() { 5458 // Deliver all pending input events in the queue. 5459 while (mPendingInputEventHead != null) { 5460 QueuedInputEvent q = mPendingInputEventHead; 5461 mPendingInputEventHead = q.mNext; 5462 if (mPendingInputEventHead == null) { 5463 mPendingInputEventTail = null; 5464 } 5465 q.mNext = null; 5466 5467 mPendingInputEventCount -= 1; 5468 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5469 mPendingInputEventCount); 5470 5471 deliverInputEvent(q); 5472 } 5473 5474 // We are done processing all input events that we can process right now 5475 // so we can clear the pending flag immediately. 5476 if (mProcessInputEventsScheduled) { 5477 mProcessInputEventsScheduled = false; 5478 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5479 } 5480 } 5481 5482 private void deliverInputEvent(QueuedInputEvent q) { 5483 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5484 try { 5485 if (mInputEventConsistencyVerifier != null) { 5486 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5487 } 5488 5489 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5490 if (stage != null) { 5491 stage.deliver(q); 5492 } else { 5493 finishInputEvent(q); 5494 } 5495 } finally { 5496 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5497 } 5498 } 5499 5500 private void finishInputEvent(QueuedInputEvent q) { 5501 if (q.mReceiver != null) { 5502 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5503 q.mReceiver.finishInputEvent(q.mEvent, handled); 5504 } else { 5505 q.mEvent.recycleIfNeededAfterDispatch(); 5506 } 5507 5508 recycleQueuedInputEvent(q); 5509 } 5510 5511 static boolean isTerminalInputEvent(InputEvent event) { 5512 if (event instanceof KeyEvent) { 5513 final KeyEvent keyEvent = (KeyEvent)event; 5514 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5515 } else { 5516 final MotionEvent motionEvent = (MotionEvent)event; 5517 final int action = motionEvent.getAction(); 5518 return action == MotionEvent.ACTION_UP 5519 || action == MotionEvent.ACTION_CANCEL 5520 || action == MotionEvent.ACTION_HOVER_EXIT; 5521 } 5522 } 5523 5524 void scheduleConsumeBatchedInput() { 5525 if (!mConsumeBatchedInputScheduled) { 5526 mConsumeBatchedInputScheduled = true; 5527 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5528 mConsumedBatchedInputRunnable, null); 5529 } 5530 } 5531 5532 void unscheduleConsumeBatchedInput() { 5533 if (mConsumeBatchedInputScheduled) { 5534 mConsumeBatchedInputScheduled = false; 5535 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5536 mConsumedBatchedInputRunnable, null); 5537 } 5538 } 5539 5540 void doConsumeBatchedInput(long frameTimeNanos) { 5541 if (mConsumeBatchedInputScheduled) { 5542 mConsumeBatchedInputScheduled = false; 5543 if (mInputEventReceiver != null) { 5544 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5545 } 5546 doProcessInputEvents(); 5547 } 5548 } 5549 5550 final class TraversalRunnable implements Runnable { 5551 @Override 5552 public void run() { 5553 doTraversal(); 5554 } 5555 } 5556 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5557 5558 final class WindowInputEventReceiver extends InputEventReceiver { 5559 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5560 super(inputChannel, looper); 5561 } 5562 5563 @Override 5564 public void onInputEvent(InputEvent event) { 5565 enqueueInputEvent(event, this, 0, true); 5566 } 5567 5568 @Override 5569 public void onBatchedInputEventPending() { 5570 scheduleConsumeBatchedInput(); 5571 } 5572 5573 @Override 5574 public void dispose() { 5575 unscheduleConsumeBatchedInput(); 5576 super.dispose(); 5577 } 5578 } 5579 WindowInputEventReceiver mInputEventReceiver; 5580 5581 final class ConsumeBatchedInputRunnable implements Runnable { 5582 @Override 5583 public void run() { 5584 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5585 } 5586 } 5587 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5588 new ConsumeBatchedInputRunnable(); 5589 boolean mConsumeBatchedInputScheduled; 5590 5591 final class InvalidateOnAnimationRunnable implements Runnable { 5592 private boolean mPosted; 5593 private final ArrayList<View> mViews = new ArrayList<View>(); 5594 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5595 new ArrayList<AttachInfo.InvalidateInfo>(); 5596 private View[] mTempViews; 5597 private AttachInfo.InvalidateInfo[] mTempViewRects; 5598 5599 public void addView(View view) { 5600 synchronized (this) { 5601 mViews.add(view); 5602 postIfNeededLocked(); 5603 } 5604 } 5605 5606 public void addViewRect(AttachInfo.InvalidateInfo info) { 5607 synchronized (this) { 5608 mViewRects.add(info); 5609 postIfNeededLocked(); 5610 } 5611 } 5612 5613 public void removeView(View view) { 5614 synchronized (this) { 5615 mViews.remove(view); 5616 5617 for (int i = mViewRects.size(); i-- > 0; ) { 5618 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5619 if (info.target == view) { 5620 mViewRects.remove(i); 5621 info.recycle(); 5622 } 5623 } 5624 5625 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5626 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5627 mPosted = false; 5628 } 5629 } 5630 } 5631 5632 @Override 5633 public void run() { 5634 final int viewCount; 5635 final int viewRectCount; 5636 synchronized (this) { 5637 mPosted = false; 5638 5639 viewCount = mViews.size(); 5640 if (viewCount != 0) { 5641 mTempViews = mViews.toArray(mTempViews != null 5642 ? mTempViews : new View[viewCount]); 5643 mViews.clear(); 5644 } 5645 5646 viewRectCount = mViewRects.size(); 5647 if (viewRectCount != 0) { 5648 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5649 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5650 mViewRects.clear(); 5651 } 5652 } 5653 5654 for (int i = 0; i < viewCount; i++) { 5655 mTempViews[i].invalidate(); 5656 mTempViews[i] = null; 5657 } 5658 5659 for (int i = 0; i < viewRectCount; i++) { 5660 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5661 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5662 info.recycle(); 5663 } 5664 } 5665 5666 private void postIfNeededLocked() { 5667 if (!mPosted) { 5668 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5669 mPosted = true; 5670 } 5671 } 5672 } 5673 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5674 new InvalidateOnAnimationRunnable(); 5675 5676 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5677 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5678 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5679 } 5680 5681 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5682 long delayMilliseconds) { 5683 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5684 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5685 } 5686 5687 public void dispatchInvalidateOnAnimation(View view) { 5688 mInvalidateOnAnimationRunnable.addView(view); 5689 } 5690 5691 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5692 mInvalidateOnAnimationRunnable.addViewRect(info); 5693 } 5694 5695 public void enqueueDisplayList(DisplayList displayList) { 5696 mDisplayLists.add(displayList); 5697 } 5698 5699 public void cancelInvalidate(View view) { 5700 mHandler.removeMessages(MSG_INVALIDATE, view); 5701 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5702 // them to the pool 5703 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5704 mInvalidateOnAnimationRunnable.removeView(view); 5705 } 5706 5707 public void dispatchInputEvent(InputEvent event) { 5708 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, event); 5709 msg.setAsynchronous(true); 5710 mHandler.sendMessage(msg); 5711 } 5712 5713 public void dispatchKeyFromIme(KeyEvent event) { 5714 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5715 msg.setAsynchronous(true); 5716 mHandler.sendMessage(msg); 5717 } 5718 5719 public void dispatchUnhandledKey(KeyEvent event) { 5720 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5721 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5722 final int keyCode = event.getKeyCode(); 5723 final int metaState = event.getMetaState(); 5724 5725 // Check for fallback actions specified by the key character map. 5726 KeyCharacterMap.FallbackAction fallbackAction = 5727 kcm.getFallbackAction(keyCode, metaState); 5728 if (fallbackAction != null) { 5729 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5730 KeyEvent fallbackEvent = KeyEvent.obtain( 5731 event.getDownTime(), event.getEventTime(), 5732 event.getAction(), fallbackAction.keyCode, 5733 event.getRepeatCount(), fallbackAction.metaState, 5734 event.getDeviceId(), event.getScanCode(), 5735 flags, event.getSource(), null); 5736 fallbackAction.recycle(); 5737 5738 dispatchInputEvent(fallbackEvent); 5739 } 5740 } 5741 } 5742 5743 public void dispatchAppVisibility(boolean visible) { 5744 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5745 msg.arg1 = visible ? 1 : 0; 5746 mHandler.sendMessage(msg); 5747 } 5748 5749 public void dispatchScreenStateChange(boolean on) { 5750 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5751 msg.arg1 = on ? 1 : 0; 5752 mHandler.sendMessage(msg); 5753 } 5754 5755 public void dispatchGetNewSurface() { 5756 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5757 mHandler.sendMessage(msg); 5758 } 5759 5760 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5761 Message msg = Message.obtain(); 5762 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5763 msg.arg1 = hasFocus ? 1 : 0; 5764 msg.arg2 = inTouchMode ? 1 : 0; 5765 mHandler.sendMessage(msg); 5766 } 5767 5768 public void dispatchCloseSystemDialogs(String reason) { 5769 Message msg = Message.obtain(); 5770 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5771 msg.obj = reason; 5772 mHandler.sendMessage(msg); 5773 } 5774 5775 public void dispatchDragEvent(DragEvent event) { 5776 final int what; 5777 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5778 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5779 mHandler.removeMessages(what); 5780 } else { 5781 what = MSG_DISPATCH_DRAG_EVENT; 5782 } 5783 Message msg = mHandler.obtainMessage(what, event); 5784 mHandler.sendMessage(msg); 5785 } 5786 5787 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5788 int localValue, int localChanges) { 5789 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5790 args.seq = seq; 5791 args.globalVisibility = globalVisibility; 5792 args.localValue = localValue; 5793 args.localChanges = localChanges; 5794 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5795 } 5796 5797 public void dispatchDoneAnimating() { 5798 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5799 } 5800 5801 public void dispatchCheckFocus() { 5802 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5803 // This will result in a call to checkFocus() below. 5804 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5805 } 5806 } 5807 5808 /** 5809 * Post a callback to send a 5810 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5811 * This event is send at most once every 5812 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5813 */ 5814 private void postSendWindowContentChangedCallback(View source, int changeType) { 5815 if (mSendWindowContentChangedAccessibilityEvent == null) { 5816 mSendWindowContentChangedAccessibilityEvent = 5817 new SendWindowContentChangedAccessibilityEvent(); 5818 } 5819 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 5820 } 5821 5822 /** 5823 * Remove a posted callback to send a 5824 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5825 */ 5826 private void removeSendWindowContentChangedCallback() { 5827 if (mSendWindowContentChangedAccessibilityEvent != null) { 5828 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5829 } 5830 } 5831 5832 @Override 5833 public boolean showContextMenuForChild(View originalView) { 5834 return false; 5835 } 5836 5837 @Override 5838 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5839 return null; 5840 } 5841 5842 @Override 5843 public void createContextMenu(ContextMenu menu) { 5844 } 5845 5846 @Override 5847 public void childDrawableStateChanged(View child) { 5848 } 5849 5850 @Override 5851 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5852 if (mView == null) { 5853 return false; 5854 } 5855 // Intercept accessibility focus events fired by virtual nodes to keep 5856 // track of accessibility focus position in such nodes. 5857 final int eventType = event.getEventType(); 5858 switch (eventType) { 5859 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5860 final long sourceNodeId = event.getSourceNodeId(); 5861 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5862 sourceNodeId); 5863 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5864 if (source != null) { 5865 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5866 if (provider != null) { 5867 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5868 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5869 setAccessibilityFocus(source, node); 5870 } 5871 } 5872 } break; 5873 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5874 final long sourceNodeId = event.getSourceNodeId(); 5875 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5876 sourceNodeId); 5877 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5878 if (source != null) { 5879 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5880 if (provider != null) { 5881 setAccessibilityFocus(null, null); 5882 } 5883 } 5884 } break; 5885 } 5886 mAccessibilityManager.sendAccessibilityEvent(event); 5887 return true; 5888 } 5889 5890 @Override 5891 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 5892 postSendWindowContentChangedCallback(source, changeType); 5893 } 5894 5895 @Override 5896 public boolean canResolveLayoutDirection() { 5897 return true; 5898 } 5899 5900 @Override 5901 public boolean isLayoutDirectionResolved() { 5902 return true; 5903 } 5904 5905 @Override 5906 public int getLayoutDirection() { 5907 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5908 } 5909 5910 @Override 5911 public boolean canResolveTextDirection() { 5912 return true; 5913 } 5914 5915 @Override 5916 public boolean isTextDirectionResolved() { 5917 return true; 5918 } 5919 5920 @Override 5921 public int getTextDirection() { 5922 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5923 } 5924 5925 @Override 5926 public boolean canResolveTextAlignment() { 5927 return true; 5928 } 5929 5930 @Override 5931 public boolean isTextAlignmentResolved() { 5932 return true; 5933 } 5934 5935 @Override 5936 public int getTextAlignment() { 5937 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5938 } 5939 5940 private View getCommonPredecessor(View first, View second) { 5941 if (mAttachInfo != null) { 5942 if (mTempHashSet == null) { 5943 mTempHashSet = new HashSet<View>(); 5944 } 5945 HashSet<View> seen = mTempHashSet; 5946 seen.clear(); 5947 View firstCurrent = first; 5948 while (firstCurrent != null) { 5949 seen.add(firstCurrent); 5950 ViewParent firstCurrentParent = firstCurrent.mParent; 5951 if (firstCurrentParent instanceof View) { 5952 firstCurrent = (View) firstCurrentParent; 5953 } else { 5954 firstCurrent = null; 5955 } 5956 } 5957 View secondCurrent = second; 5958 while (secondCurrent != null) { 5959 if (seen.contains(secondCurrent)) { 5960 seen.clear(); 5961 return secondCurrent; 5962 } 5963 ViewParent secondCurrentParent = secondCurrent.mParent; 5964 if (secondCurrentParent instanceof View) { 5965 secondCurrent = (View) secondCurrentParent; 5966 } else { 5967 secondCurrent = null; 5968 } 5969 } 5970 seen.clear(); 5971 } 5972 return null; 5973 } 5974 5975 void checkThread() { 5976 if (mThread != Thread.currentThread()) { 5977 throw new CalledFromWrongThreadException( 5978 "Only the original thread that created a view hierarchy can touch its views."); 5979 } 5980 } 5981 5982 @Override 5983 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 5984 // ViewAncestor never intercepts touch event, so this can be a no-op 5985 } 5986 5987 @Override 5988 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 5989 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 5990 if (rectangle != null) { 5991 mTempRect.set(rectangle); 5992 mTempRect.offset(0, -mCurScrollY); 5993 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 5994 try { 5995 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 5996 } catch (RemoteException re) { 5997 /* ignore */ 5998 } 5999 } 6000 return scrolled; 6001 } 6002 6003 @Override 6004 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6005 // Do nothing. 6006 } 6007 6008 void changeCanvasOpacity(boolean opaque) { 6009 // TODO(romainguy): recreate Canvas (software or hardware) to reflect the opacity change. 6010 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6011 } 6012 6013 class TakenSurfaceHolder extends BaseSurfaceHolder { 6014 @Override 6015 public boolean onAllowLockCanvas() { 6016 return mDrawingAllowed; 6017 } 6018 6019 @Override 6020 public void onRelayoutContainer() { 6021 // Not currently interesting -- from changing between fixed and layout size. 6022 } 6023 6024 @Override 6025 public void setFormat(int format) { 6026 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6027 } 6028 6029 @Override 6030 public void setType(int type) { 6031 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6032 } 6033 6034 @Override 6035 public void onUpdateSurface() { 6036 // We take care of format and type changes on our own. 6037 throw new IllegalStateException("Shouldn't be here"); 6038 } 6039 6040 @Override 6041 public boolean isCreating() { 6042 return mIsCreating; 6043 } 6044 6045 @Override 6046 public void setFixedSize(int width, int height) { 6047 throw new UnsupportedOperationException( 6048 "Currently only support sizing from layout"); 6049 } 6050 6051 @Override 6052 public void setKeepScreenOn(boolean screenOn) { 6053 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6054 } 6055 } 6056 6057 static class W extends IWindow.Stub { 6058 private final WeakReference<ViewRootImpl> mViewAncestor; 6059 private final IWindowSession mWindowSession; 6060 6061 W(ViewRootImpl viewAncestor) { 6062 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6063 mWindowSession = viewAncestor.mWindowSession; 6064 } 6065 6066 @Override 6067 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6068 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6069 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6070 if (viewAncestor != null) { 6071 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6072 visibleInsets, reportDraw, newConfig); 6073 } 6074 } 6075 6076 @Override 6077 public void moved(int newX, int newY) { 6078 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6079 if (viewAncestor != null) { 6080 viewAncestor.dispatchMoved(newX, newY); 6081 } 6082 } 6083 6084 @Override 6085 public void dispatchAppVisibility(boolean visible) { 6086 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6087 if (viewAncestor != null) { 6088 viewAncestor.dispatchAppVisibility(visible); 6089 } 6090 } 6091 6092 @Override 6093 public void dispatchScreenState(boolean on) { 6094 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6095 if (viewAncestor != null) { 6096 viewAncestor.dispatchScreenStateChange(on); 6097 } 6098 } 6099 6100 @Override 6101 public void dispatchGetNewSurface() { 6102 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6103 if (viewAncestor != null) { 6104 viewAncestor.dispatchGetNewSurface(); 6105 } 6106 } 6107 6108 @Override 6109 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6110 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6111 if (viewAncestor != null) { 6112 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6113 } 6114 } 6115 6116 private static int checkCallingPermission(String permission) { 6117 try { 6118 return ActivityManagerNative.getDefault().checkPermission( 6119 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6120 } catch (RemoteException e) { 6121 return PackageManager.PERMISSION_DENIED; 6122 } 6123 } 6124 6125 @Override 6126 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6127 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6128 if (viewAncestor != null) { 6129 final View view = viewAncestor.mView; 6130 if (view != null) { 6131 if (checkCallingPermission(Manifest.permission.DUMP) != 6132 PackageManager.PERMISSION_GRANTED) { 6133 throw new SecurityException("Insufficient permissions to invoke" 6134 + " executeCommand() from pid=" + Binder.getCallingPid() 6135 + ", uid=" + Binder.getCallingUid()); 6136 } 6137 6138 OutputStream clientStream = null; 6139 try { 6140 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6141 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6142 } catch (IOException e) { 6143 e.printStackTrace(); 6144 } finally { 6145 if (clientStream != null) { 6146 try { 6147 clientStream.close(); 6148 } catch (IOException e) { 6149 e.printStackTrace(); 6150 } 6151 } 6152 } 6153 } 6154 } 6155 } 6156 6157 @Override 6158 public void closeSystemDialogs(String reason) { 6159 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6160 if (viewAncestor != null) { 6161 viewAncestor.dispatchCloseSystemDialogs(reason); 6162 } 6163 } 6164 6165 @Override 6166 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6167 boolean sync) { 6168 if (sync) { 6169 try { 6170 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6171 } catch (RemoteException e) { 6172 } 6173 } 6174 } 6175 6176 @Override 6177 public void dispatchWallpaperCommand(String action, int x, int y, 6178 int z, Bundle extras, boolean sync) { 6179 if (sync) { 6180 try { 6181 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6182 } catch (RemoteException e) { 6183 } 6184 } 6185 } 6186 6187 /* Drag/drop */ 6188 @Override 6189 public void dispatchDragEvent(DragEvent event) { 6190 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6191 if (viewAncestor != null) { 6192 viewAncestor.dispatchDragEvent(event); 6193 } 6194 } 6195 6196 @Override 6197 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6198 int localValue, int localChanges) { 6199 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6200 if (viewAncestor != null) { 6201 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6202 localValue, localChanges); 6203 } 6204 } 6205 6206 @Override 6207 public void doneAnimating() { 6208 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6209 if (viewAncestor != null) { 6210 viewAncestor.dispatchDoneAnimating(); 6211 } 6212 } 6213 } 6214 6215 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6216 public CalledFromWrongThreadException(String msg) { 6217 super(msg); 6218 } 6219 } 6220 6221 private final SurfaceHolder mHolder = new SurfaceHolder() { 6222 // we only need a SurfaceHolder for opengl. it would be nice 6223 // to implement everything else though, especially the callback 6224 // support (opengl doesn't make use of it right now, but eventually 6225 // will). 6226 @Override 6227 public Surface getSurface() { 6228 return mSurface; 6229 } 6230 6231 @Override 6232 public boolean isCreating() { 6233 return false; 6234 } 6235 6236 @Override 6237 public void addCallback(Callback callback) { 6238 } 6239 6240 @Override 6241 public void removeCallback(Callback callback) { 6242 } 6243 6244 @Override 6245 public void setFixedSize(int width, int height) { 6246 } 6247 6248 @Override 6249 public void setSizeFromLayout() { 6250 } 6251 6252 @Override 6253 public void setFormat(int format) { 6254 } 6255 6256 @Override 6257 public void setType(int type) { 6258 } 6259 6260 @Override 6261 public void setKeepScreenOn(boolean screenOn) { 6262 } 6263 6264 @Override 6265 public Canvas lockCanvas() { 6266 return null; 6267 } 6268 6269 @Override 6270 public Canvas lockCanvas(Rect dirty) { 6271 return null; 6272 } 6273 6274 @Override 6275 public void unlockCanvasAndPost(Canvas canvas) { 6276 } 6277 @Override 6278 public Rect getSurfaceFrame() { 6279 return null; 6280 } 6281 }; 6282 6283 static RunQueue getRunQueue() { 6284 RunQueue rq = sRunQueues.get(); 6285 if (rq != null) { 6286 return rq; 6287 } 6288 rq = new RunQueue(); 6289 sRunQueues.set(rq); 6290 return rq; 6291 } 6292 6293 /** 6294 * The run queue is used to enqueue pending work from Views when no Handler is 6295 * attached. The work is executed during the next call to performTraversals on 6296 * the thread. 6297 * @hide 6298 */ 6299 static final class RunQueue { 6300 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6301 6302 void post(Runnable action) { 6303 postDelayed(action, 0); 6304 } 6305 6306 void postDelayed(Runnable action, long delayMillis) { 6307 HandlerAction handlerAction = new HandlerAction(); 6308 handlerAction.action = action; 6309 handlerAction.delay = delayMillis; 6310 6311 synchronized (mActions) { 6312 mActions.add(handlerAction); 6313 } 6314 } 6315 6316 void removeCallbacks(Runnable action) { 6317 final HandlerAction handlerAction = new HandlerAction(); 6318 handlerAction.action = action; 6319 6320 synchronized (mActions) { 6321 final ArrayList<HandlerAction> actions = mActions; 6322 6323 while (actions.remove(handlerAction)) { 6324 // Keep going 6325 } 6326 } 6327 } 6328 6329 void executeActions(Handler handler) { 6330 synchronized (mActions) { 6331 final ArrayList<HandlerAction> actions = mActions; 6332 final int count = actions.size(); 6333 6334 for (int i = 0; i < count; i++) { 6335 final HandlerAction handlerAction = actions.get(i); 6336 handler.postDelayed(handlerAction.action, handlerAction.delay); 6337 } 6338 6339 actions.clear(); 6340 } 6341 } 6342 6343 private static class HandlerAction { 6344 Runnable action; 6345 long delay; 6346 6347 @Override 6348 public boolean equals(Object o) { 6349 if (this == o) return true; 6350 if (o == null || getClass() != o.getClass()) return false; 6351 6352 HandlerAction that = (HandlerAction) o; 6353 return !(action != null ? !action.equals(that.action) : that.action != null); 6354 6355 } 6356 6357 @Override 6358 public int hashCode() { 6359 int result = action != null ? action.hashCode() : 0; 6360 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6361 return result; 6362 } 6363 } 6364 } 6365 6366 /** 6367 * Class for managing the accessibility interaction connection 6368 * based on the global accessibility state. 6369 */ 6370 final class AccessibilityInteractionConnectionManager 6371 implements AccessibilityStateChangeListener { 6372 @Override 6373 public void onAccessibilityStateChanged(boolean enabled) { 6374 if (enabled) { 6375 ensureConnection(); 6376 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6377 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6378 View focusedView = mView.findFocus(); 6379 if (focusedView != null && focusedView != mView) { 6380 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6381 } 6382 } 6383 } else { 6384 ensureNoConnection(); 6385 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6386 } 6387 } 6388 6389 public void ensureConnection() { 6390 if (mAttachInfo != null) { 6391 final boolean registered = 6392 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6393 if (!registered) { 6394 mAttachInfo.mAccessibilityWindowId = 6395 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6396 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6397 } 6398 } 6399 } 6400 6401 public void ensureNoConnection() { 6402 final boolean registered = 6403 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6404 if (registered) { 6405 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6406 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6407 } 6408 } 6409 } 6410 6411 /** 6412 * This class is an interface this ViewAncestor provides to the 6413 * AccessibilityManagerService to the latter can interact with 6414 * the view hierarchy in this ViewAncestor. 6415 */ 6416 static final class AccessibilityInteractionConnection 6417 extends IAccessibilityInteractionConnection.Stub { 6418 private final WeakReference<ViewRootImpl> mViewRootImpl; 6419 6420 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6421 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6422 } 6423 6424 @Override 6425 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6426 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6427 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6428 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6429 if (viewRootImpl != null && viewRootImpl.mView != null) { 6430 viewRootImpl.getAccessibilityInteractionController() 6431 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6432 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6433 spec); 6434 } else { 6435 // We cannot make the call and notify the caller so it does not wait. 6436 try { 6437 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6438 } catch (RemoteException re) { 6439 /* best effort - ignore */ 6440 } 6441 } 6442 } 6443 6444 @Override 6445 public void performAccessibilityAction(long accessibilityNodeId, int action, 6446 Bundle arguments, int interactionId, 6447 IAccessibilityInteractionConnectionCallback callback, int flags, 6448 int interogatingPid, long interrogatingTid) { 6449 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6450 if (viewRootImpl != null && viewRootImpl.mView != null) { 6451 viewRootImpl.getAccessibilityInteractionController() 6452 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6453 interactionId, callback, flags, interogatingPid, interrogatingTid); 6454 } else { 6455 // We cannot make the call and notify the caller so it does not wait. 6456 try { 6457 callback.setPerformAccessibilityActionResult(false, interactionId); 6458 } catch (RemoteException re) { 6459 /* best effort - ignore */ 6460 } 6461 } 6462 } 6463 6464 @Override 6465 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6466 String viewId, int interactionId, 6467 IAccessibilityInteractionConnectionCallback callback, int flags, 6468 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6469 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6470 if (viewRootImpl != null && viewRootImpl.mView != null) { 6471 viewRootImpl.getAccessibilityInteractionController() 6472 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6473 viewId, interactionId, callback, flags, interrogatingPid, 6474 interrogatingTid, spec); 6475 } else { 6476 // We cannot make the call and notify the caller so it does not wait. 6477 try { 6478 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6479 } catch (RemoteException re) { 6480 /* best effort - ignore */ 6481 } 6482 } 6483 } 6484 6485 @Override 6486 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6487 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6488 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6489 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6490 if (viewRootImpl != null && viewRootImpl.mView != null) { 6491 viewRootImpl.getAccessibilityInteractionController() 6492 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6493 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6494 spec); 6495 } else { 6496 // We cannot make the call and notify the caller so it does not wait. 6497 try { 6498 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6499 } catch (RemoteException re) { 6500 /* best effort - ignore */ 6501 } 6502 } 6503 } 6504 6505 @Override 6506 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6507 IAccessibilityInteractionConnectionCallback callback, int flags, 6508 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6509 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6510 if (viewRootImpl != null && viewRootImpl.mView != null) { 6511 viewRootImpl.getAccessibilityInteractionController() 6512 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6513 flags, interrogatingPid, interrogatingTid, spec); 6514 } else { 6515 // We cannot make the call and notify the caller so it does not wait. 6516 try { 6517 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6518 } catch (RemoteException re) { 6519 /* best effort - ignore */ 6520 } 6521 } 6522 } 6523 6524 @Override 6525 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6526 IAccessibilityInteractionConnectionCallback callback, int flags, 6527 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6528 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6529 if (viewRootImpl != null && viewRootImpl.mView != null) { 6530 viewRootImpl.getAccessibilityInteractionController() 6531 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6532 callback, flags, interrogatingPid, interrogatingTid, spec); 6533 } else { 6534 // We cannot make the call and notify the caller so it does not wait. 6535 try { 6536 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6537 } catch (RemoteException re) { 6538 /* best effort - ignore */ 6539 } 6540 } 6541 } 6542 } 6543 6544 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6545 private int mChangeTypes = 0; 6546 6547 public View mSource; 6548 public long mLastEventTimeMillis; 6549 6550 @Override 6551 public void run() { 6552 // The accessibility may be turned off while we were waiting so check again. 6553 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6554 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6555 AccessibilityEvent event = AccessibilityEvent.obtain(); 6556 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6557 event.setContentChangeTypes(mChangeTypes); 6558 mSource.sendAccessibilityEventUnchecked(event); 6559 } else { 6560 mLastEventTimeMillis = 0; 6561 } 6562 // In any case reset to initial state. 6563 mSource.resetSubtreeAccessibilityStateChanged(); 6564 mSource = null; 6565 mChangeTypes = 0; 6566 } 6567 6568 public void runOrPost(View source, int changeType) { 6569 if (mSource != null) { 6570 // If there is no common predecessor, then mSource points to 6571 // a removed view, hence in this case always prefer the source. 6572 View predecessor = getCommonPredecessor(mSource, source); 6573 mSource = (predecessor != null) ? predecessor : source; 6574 mChangeTypes |= changeType; 6575 return; 6576 } 6577 mSource = source; 6578 mChangeTypes = changeType; 6579 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6580 final long minEventIntevalMillis = 6581 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6582 if (timeSinceLastMillis >= minEventIntevalMillis) { 6583 mSource.removeCallbacks(this); 6584 run(); 6585 } else { 6586 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6587 } 6588 } 6589 } 6590} 6591