ViewRootImpl.java revision e56e9df5f12b2714d79415e2c5b3f30d58ca7c12
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.Matrix; 32import android.graphics.Paint; 33import android.graphics.PixelFormat; 34import android.graphics.Point; 35import android.graphics.PointF; 36import android.graphics.PorterDuff; 37import android.graphics.Rect; 38import android.graphics.Region; 39import android.graphics.drawable.Drawable; 40import android.media.AudioManager; 41import android.os.Binder; 42import android.os.Bundle; 43import android.os.Debug; 44import android.os.Handler; 45import android.os.Looper; 46import android.os.Message; 47import android.os.ParcelFileDescriptor; 48import android.os.PowerManager; 49import android.os.Process; 50import android.os.RemoteException; 51import android.os.SystemClock; 52import android.os.SystemProperties; 53import android.os.Trace; 54import android.util.AndroidRuntimeException; 55import android.util.DisplayMetrics; 56import android.util.Log; 57import android.util.Slog; 58import android.util.TypedValue; 59import android.view.View.AttachInfo; 60import android.view.View.MeasureSpec; 61import android.view.accessibility.AccessibilityEvent; 62import android.view.accessibility.AccessibilityManager; 63import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 64import android.view.accessibility.AccessibilityNodeInfo; 65import android.view.accessibility.AccessibilityNodeProvider; 66import android.view.accessibility.IAccessibilityInteractionConnection; 67import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 68import android.view.animation.AccelerateDecelerateInterpolator; 69import android.view.animation.Interpolator; 70import android.view.inputmethod.InputConnection; 71import android.view.inputmethod.InputMethodManager; 72import android.view.Surface.OutOfResourcesException; 73import android.widget.Scroller; 74 75import com.android.internal.R; 76import com.android.internal.os.SomeArgs; 77import com.android.internal.policy.PolicyManager; 78import com.android.internal.view.BaseSurfaceHolder; 79import com.android.internal.view.RootViewSurfaceTaker; 80 81import java.io.FileDescriptor; 82import java.io.IOException; 83import java.io.OutputStream; 84import java.io.PrintWriter; 85import java.lang.ref.WeakReference; 86import java.util.ArrayList; 87import java.util.HashSet; 88 89/** 90 * The top of a view hierarchy, implementing the needed protocol between View 91 * and the WindowManager. This is for the most part an internal implementation 92 * detail of {@link WindowManagerGlobal}. 93 * 94 * {@hide} 95 */ 96@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 97public final class ViewRootImpl implements ViewParent, 98 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 99 private static final String TAG = "ViewRootImpl"; 100 private static final boolean DBG = false; 101 private static final boolean LOCAL_LOGV = false; 102 /** @noinspection PointlessBooleanExpression*/ 103 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 104 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 105 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 106 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 107 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 108 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 109 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 110 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 111 private static final boolean DEBUG_FPS = false; 112 113 /** 114 * Set this system property to true to force the view hierarchy to render 115 * at 60 Hz. This can be used to measure the potential framerate. 116 */ 117 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 118 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 119 120 /** 121 * Maximum time we allow the user to roll the trackball enough to generate 122 * a key event, before resetting the counters. 123 */ 124 static final int MAX_TRACKBALL_DELAY = 250; 125 126 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 127 128 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 129 static boolean sFirstDrawComplete = false; 130 131 static final ArrayList<ComponentCallbacks> sConfigCallbacks 132 = new ArrayList<ComponentCallbacks>(); 133 134 final Context mContext; 135 final IWindowSession mWindowSession; 136 final Display mDisplay; 137 final String mBasePackageName; 138 139 final int[] mTmpLocation = new int[2]; 140 141 final TypedValue mTmpValue = new TypedValue(); 142 143 final Thread mThread; 144 145 final WindowLeaked mLocation; 146 147 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 148 149 final W mWindow; 150 151 final int mTargetSdkVersion; 152 153 int mSeq; 154 155 View mView; 156 157 View mAccessibilityFocusedHost; 158 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 159 160 int mViewVisibility; 161 boolean mAppVisible = true; 162 int mOrigWindowType = -1; 163 164 // Set to true if the owner of this window is in the stopped state, 165 // so the window should no longer be active. 166 boolean mStopped = false; 167 168 boolean mLastInCompatMode = false; 169 170 SurfaceHolder.Callback2 mSurfaceHolderCallback; 171 BaseSurfaceHolder mSurfaceHolder; 172 boolean mIsCreating; 173 boolean mDrawingAllowed; 174 175 final Region mTransparentRegion; 176 final Region mPreviousTransparentRegion; 177 178 int mWidth; 179 int mHeight; 180 Rect mDirty; 181 final Rect mCurrentDirty = new Rect(); 182 boolean mIsAnimating; 183 184 CompatibilityInfo.Translator mTranslator; 185 186 final View.AttachInfo mAttachInfo; 187 InputChannel mInputChannel; 188 InputQueue.Callback mInputQueueCallback; 189 InputQueue mInputQueue; 190 FallbackEventHandler mFallbackEventHandler; 191 Choreographer mChoreographer; 192 193 final Rect mTempRect; // used in the transaction to not thrash the heap. 194 final Rect mVisRect; // used to retrieve visible rect of focused view. 195 196 boolean mTraversalScheduled; 197 int mTraversalBarrier; 198 boolean mWillDrawSoon; 199 /** Set to true while in performTraversals for detecting when die(true) is called from internal 200 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 201 boolean mIsInTraversal; 202 boolean mFitSystemWindowsRequested; 203 boolean mLayoutRequested; 204 boolean mFirst; 205 boolean mReportNextDraw; 206 boolean mFullRedrawNeeded; 207 boolean mNewSurfaceNeeded; 208 boolean mHasHadWindowFocus; 209 boolean mLastWasImTarget; 210 boolean mWindowsAnimating; 211 boolean mDrawDuringWindowsAnimating; 212 boolean mIsDrawing; 213 int mLastSystemUiVisibility; 214 int mClientWindowLayoutFlags; 215 boolean mLastOverscanRequested; 216 217 // Pool of queued input events. 218 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 219 private QueuedInputEvent mQueuedInputEventPool; 220 private int mQueuedInputEventPoolSize; 221 222 /* Input event queue. 223 * Pending input events are input events waiting to be delivered to the input stages 224 * and handled by the application. 225 */ 226 QueuedInputEvent mPendingInputEventHead; 227 QueuedInputEvent mPendingInputEventTail; 228 int mPendingInputEventCount; 229 boolean mProcessInputEventsScheduled; 230 String mPendingInputEventQueueLengthCounterName = "pq"; 231 232 InputStage mFirstInputStage; 233 InputStage mFirstPostImeInputStage; 234 235 boolean mWindowAttributesChanged = false; 236 int mWindowAttributesChangesFlag = 0; 237 238 // These can be accessed by any thread, must be protected with a lock. 239 // Surface can never be reassigned or cleared (use Surface.clear()). 240 private final Surface mSurface = new Surface(); 241 242 boolean mAdded; 243 boolean mAddedTouchMode; 244 245 final DisplayAdjustments mDisplayAdjustments; 246 247 // These are accessed by multiple threads. 248 final Rect mWinFrame; // frame given by window manager. 249 250 final Rect mPendingOverscanInsets = new Rect(); 251 final Rect mPendingVisibleInsets = new Rect(); 252 final Rect mPendingContentInsets = new Rect(); 253 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 254 = new ViewTreeObserver.InternalInsetsInfo(); 255 256 final Rect mFitSystemWindowsInsets = new Rect(); 257 258 final Configuration mLastConfiguration = new Configuration(); 259 final Configuration mPendingConfiguration = new Configuration(); 260 261 boolean mScrollMayChange; 262 int mSoftInputMode; 263 WeakReference<View> mLastScrolledFocus; 264 int mScrollY; 265 int mCurScrollY; 266 Scroller mScroller; 267 HardwareLayer mResizeBuffer; 268 long mResizeBufferStartTime; 269 int mResizeBufferDuration; 270 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 271 private ArrayList<LayoutTransition> mPendingTransitions; 272 273 final ViewConfiguration mViewConfiguration; 274 275 /* Drag/drop */ 276 ClipDescription mDragDescription; 277 View mCurrentDragView; 278 volatile Object mLocalDragState; 279 final PointF mDragPoint = new PointF(); 280 final PointF mLastTouchPoint = new PointF(); 281 282 private boolean mProfileRendering; 283 private Choreographer.FrameCallback mRenderProfiler; 284 private boolean mRenderProfilingEnabled; 285 286 private boolean mMediaDisabled; 287 288 // Variables to track frames per second, enabled via DEBUG_FPS flag 289 private long mFpsStartTime = -1; 290 private long mFpsPrevTime = -1; 291 private int mFpsNumFrames; 292 293 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 294 295 /** 296 * see {@link #playSoundEffect(int)} 297 */ 298 AudioManager mAudioManager; 299 300 final AccessibilityManager mAccessibilityManager; 301 302 AccessibilityInteractionController mAccessibilityInteractionController; 303 304 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 305 306 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 307 308 HashSet<View> mTempHashSet; 309 310 private final int mDensity; 311 private final int mNoncompatDensity; 312 313 private boolean mInLayout = false; 314 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 315 boolean mHandlingLayoutInLayoutRequest = false; 316 317 private int mViewLayoutDirectionInitial; 318 319 /** Set to true once doDie() has been called. */ 320 private boolean mRemoved; 321 322 /** 323 * Consistency verifier for debugging purposes. 324 */ 325 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 326 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 327 new InputEventConsistencyVerifier(this, 0) : null; 328 329 static final class SystemUiVisibilityInfo { 330 int seq; 331 int globalVisibility; 332 int localValue; 333 int localChanges; 334 } 335 336 public ViewRootImpl(Context context, Display display) { 337 mContext = context; 338 mWindowSession = WindowManagerGlobal.getWindowSession(); 339 mDisplay = display; 340 mBasePackageName = context.getBasePackageName(); 341 342 mDisplayAdjustments = display.getDisplayAdjustments(); 343 344 mThread = Thread.currentThread(); 345 mLocation = new WindowLeaked(null); 346 mLocation.fillInStackTrace(); 347 mWidth = -1; 348 mHeight = -1; 349 mDirty = new Rect(); 350 mTempRect = new Rect(); 351 mVisRect = new Rect(); 352 mWinFrame = new Rect(); 353 mWindow = new W(this); 354 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 355 mViewVisibility = View.GONE; 356 mTransparentRegion = new Region(); 357 mPreviousTransparentRegion = new Region(); 358 mFirst = true; // true for the first time the view is added 359 mAdded = false; 360 mAccessibilityManager = AccessibilityManager.getInstance(context); 361 mAccessibilityInteractionConnectionManager = 362 new AccessibilityInteractionConnectionManager(); 363 mAccessibilityManager.addAccessibilityStateChangeListener( 364 mAccessibilityInteractionConnectionManager); 365 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 366 mViewConfiguration = ViewConfiguration.get(context); 367 mDensity = context.getResources().getDisplayMetrics().densityDpi; 368 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 369 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 370 mChoreographer = Choreographer.getInstance(); 371 372 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 373 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 374 loadSystemProperties(); 375 } 376 377 public static void addFirstDrawHandler(Runnable callback) { 378 synchronized (sFirstDrawHandlers) { 379 if (!sFirstDrawComplete) { 380 sFirstDrawHandlers.add(callback); 381 } 382 } 383 } 384 385 public static void addConfigCallback(ComponentCallbacks callback) { 386 synchronized (sConfigCallbacks) { 387 sConfigCallbacks.add(callback); 388 } 389 } 390 391 // FIXME for perf testing only 392 private boolean mProfile = false; 393 394 /** 395 * Call this to profile the next traversal call. 396 * FIXME for perf testing only. Remove eventually 397 */ 398 public void profile() { 399 mProfile = true; 400 } 401 402 /** 403 * Indicates whether we are in touch mode. Calling this method triggers an IPC 404 * call and should be avoided whenever possible. 405 * 406 * @return True, if the device is in touch mode, false otherwise. 407 * 408 * @hide 409 */ 410 static boolean isInTouchMode() { 411 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 412 if (windowSession != null) { 413 try { 414 return windowSession.getInTouchMode(); 415 } catch (RemoteException e) { 416 } 417 } 418 return false; 419 } 420 421 /** 422 * We have one child 423 */ 424 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 425 synchronized (this) { 426 if (mView == null) { 427 mView = view; 428 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 429 mFallbackEventHandler.setView(view); 430 mWindowAttributes.copyFrom(attrs); 431 if (mWindowAttributes.packageName == null) { 432 mWindowAttributes.packageName = mBasePackageName; 433 } 434 attrs = mWindowAttributes; 435 // Keep track of the actual window flags supplied by the client. 436 mClientWindowLayoutFlags = attrs.flags; 437 438 setAccessibilityFocus(null, null); 439 440 if (view instanceof RootViewSurfaceTaker) { 441 mSurfaceHolderCallback = 442 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 443 if (mSurfaceHolderCallback != null) { 444 mSurfaceHolder = new TakenSurfaceHolder(); 445 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 446 } 447 } 448 449 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 450 mTranslator = compatibilityInfo.getTranslator(); 451 mDisplayAdjustments.setActivityToken(attrs.token); 452 453 // If the application owns the surface, don't enable hardware acceleration 454 if (mSurfaceHolder == null) { 455 enableHardwareAcceleration(attrs); 456 } 457 458 boolean restore = false; 459 if (mTranslator != null) { 460 mSurface.setCompatibilityTranslator(mTranslator); 461 restore = true; 462 attrs.backup(); 463 mTranslator.translateWindowLayout(attrs); 464 } 465 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 466 467 if (!compatibilityInfo.supportsScreen()) { 468 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 469 mLastInCompatMode = true; 470 } 471 472 mSoftInputMode = attrs.softInputMode; 473 mWindowAttributesChanged = true; 474 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 475 mAttachInfo.mRootView = view; 476 mAttachInfo.mScalingRequired = mTranslator != null; 477 mAttachInfo.mApplicationScale = 478 mTranslator == null ? 1.0f : mTranslator.applicationScale; 479 if (panelParentView != null) { 480 mAttachInfo.mPanelParentWindowToken 481 = panelParentView.getApplicationWindowToken(); 482 } 483 mAdded = true; 484 int res; /* = WindowManagerImpl.ADD_OKAY; */ 485 486 // Schedule the first layout -before- adding to the window 487 // manager, to make sure we do the relayout before receiving 488 // any other events from the system. 489 requestLayout(); 490 if ((mWindowAttributes.inputFeatures 491 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 492 mInputChannel = new InputChannel(); 493 } 494 try { 495 mOrigWindowType = mWindowAttributes.type; 496 mAttachInfo.mRecomputeGlobalAttributes = true; 497 collectViewAttributes(); 498 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 499 getHostVisibility(), mDisplay.getDisplayId(), 500 mAttachInfo.mContentInsets, mInputChannel); 501 } catch (RemoteException e) { 502 mAdded = false; 503 mView = null; 504 mAttachInfo.mRootView = null; 505 mInputChannel = null; 506 mFallbackEventHandler.setView(null); 507 unscheduleTraversals(); 508 setAccessibilityFocus(null, null); 509 throw new RuntimeException("Adding window failed", e); 510 } finally { 511 if (restore) { 512 attrs.restore(); 513 } 514 } 515 516 if (mTranslator != null) { 517 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 518 } 519 mPendingOverscanInsets.set(0, 0, 0, 0); 520 mPendingContentInsets.set(mAttachInfo.mContentInsets); 521 mPendingVisibleInsets.set(0, 0, 0, 0); 522 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 523 if (res < WindowManagerGlobal.ADD_OKAY) { 524 mAttachInfo.mRootView = null; 525 mAdded = false; 526 mFallbackEventHandler.setView(null); 527 unscheduleTraversals(); 528 setAccessibilityFocus(null, null); 529 switch (res) { 530 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 531 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 532 throw new WindowManager.BadTokenException( 533 "Unable to add window -- token " + attrs.token 534 + " is not valid; is your activity running?"); 535 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 536 throw new WindowManager.BadTokenException( 537 "Unable to add window -- token " + attrs.token 538 + " is not for an application"); 539 case WindowManagerGlobal.ADD_APP_EXITING: 540 throw new WindowManager.BadTokenException( 541 "Unable to add window -- app for token " + attrs.token 542 + " is exiting"); 543 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 544 throw new WindowManager.BadTokenException( 545 "Unable to add window -- window " + mWindow 546 + " has already been added"); 547 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 548 // Silently ignore -- we would have just removed it 549 // right away, anyway. 550 return; 551 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 552 throw new WindowManager.BadTokenException( 553 "Unable to add window " + mWindow + 554 " -- another window of this type already exists"); 555 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 556 throw new WindowManager.BadTokenException( 557 "Unable to add window " + mWindow + 558 " -- permission denied for this window type"); 559 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 560 throw new WindowManager.InvalidDisplayException( 561 "Unable to add window " + mWindow + 562 " -- the specified display can not be found"); 563 } 564 throw new RuntimeException( 565 "Unable to add window -- unknown error code " + res); 566 } 567 568 if (view instanceof RootViewSurfaceTaker) { 569 mInputQueueCallback = 570 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 571 } 572 if (mInputChannel != null) { 573 if (mInputQueueCallback != null) { 574 mInputQueue = new InputQueue(); 575 mInputQueueCallback.onInputQueueCreated(mInputQueue); 576 } 577 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 578 Looper.myLooper()); 579 } 580 581 view.assignParent(this); 582 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 583 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 584 585 if (mAccessibilityManager.isEnabled()) { 586 mAccessibilityInteractionConnectionManager.ensureConnection(); 587 } 588 589 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 590 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 591 } 592 593 // Set up the input pipeline. 594 CharSequence counterSuffix = attrs.getTitle(); 595 InputStage syntheticInputStage = new SyntheticInputStage(); 596 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticInputStage); 597 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 598 "aq:native-post-ime:" + counterSuffix); 599 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 600 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 601 "aq:ime:" + counterSuffix); 602 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 603 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 604 "aq:native-pre-ime:" + counterSuffix); 605 606 mFirstInputStage = nativePreImeStage; 607 mFirstPostImeInputStage = earlyPostImeStage; 608 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 609 } 610 } 611 } 612 613 /** Whether the window is in local focus mode or not */ 614 private boolean isInLocalFocusMode() { 615 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 616 } 617 618 void destroyHardwareResources() { 619 invalidateDisplayLists(); 620 if (mAttachInfo.mHardwareRenderer != null) { 621 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 622 mAttachInfo.mHardwareRenderer.destroy(false); 623 } 624 } 625 626 void destroyHardwareLayers() { 627 if (mThread != Thread.currentThread()) { 628 if (mAttachInfo.mHardwareRenderer != null && 629 mAttachInfo.mHardwareRenderer.isEnabled()) { 630 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 631 } 632 } else { 633 invalidateDisplayLists(); 634 destroyHardwareLayer(mView); 635 } 636 } 637 638 private static void destroyHardwareLayer(View view) { 639 view.destroyLayer(true); 640 641 if (view instanceof ViewGroup) { 642 ViewGroup group = (ViewGroup) view; 643 644 int count = group.getChildCount(); 645 for (int i = 0; i < count; i++) { 646 destroyHardwareLayer(group.getChildAt(i)); 647 } 648 } 649 } 650 651 void flushHardwareLayerUpdates() { 652 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 653 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 654 } 655 } 656 657 void dispatchFlushHardwareLayerUpdates() { 658 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 659 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 660 } 661 662 public void attachFunctor(int functor) { 663 //noinspection SimplifiableIfStatement 664 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 665 mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 666 } 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.create(translucent); 721 if (mAttachInfo.mHardwareRenderer != null) { 722 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 723 mAttachInfo.mHardwareAccelerated = 724 mAttachInfo.mHardwareAccelerationRequested = true; 725 } 726 } else if (fakeHwAccelerated) { 727 // The window had wanted to use hardware acceleration, but this 728 // is not allowed in its process. By setting this flag, it can 729 // still render as if it was accelerated. This is basically for 730 // the preview windows the window manager shows for launching 731 // applications, so they will look more like the app being launched. 732 mAttachInfo.mHardwareAccelerationRequested = true; 733 } 734 } 735 } 736 737 public View getView() { 738 return mView; 739 } 740 741 final WindowLeaked getLocation() { 742 return mLocation; 743 } 744 745 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 746 synchronized (this) { 747 int oldSoftInputMode = mWindowAttributes.softInputMode; 748 // Keep track of the actual window flags supplied by the client. 749 mClientWindowLayoutFlags = attrs.flags; 750 // preserve compatible window flag if exists. 751 int compatibleWindowFlag = mWindowAttributes.privateFlags 752 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 753 // transfer over system UI visibility values as they carry current state. 754 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 755 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 756 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 757 if ((mWindowAttributesChangesFlag 758 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 759 // Recompute system ui visibility. 760 mAttachInfo.mRecomputeGlobalAttributes = true; 761 } 762 if (mWindowAttributes.packageName == null) { 763 mWindowAttributes.packageName = mBasePackageName; 764 } 765 mWindowAttributes.privateFlags |= compatibleWindowFlag; 766 767 applyKeepScreenOnFlag(mWindowAttributes); 768 769 if (newView) { 770 mSoftInputMode = attrs.softInputMode; 771 requestLayout(); 772 } 773 // Don't lose the mode we last auto-computed. 774 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 775 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 776 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 777 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 778 | (oldSoftInputMode 779 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 780 } 781 mWindowAttributesChanged = true; 782 scheduleTraversals(); 783 } 784 } 785 786 void handleAppVisibility(boolean visible) { 787 if (mAppVisible != visible) { 788 mAppVisible = visible; 789 scheduleTraversals(); 790 } 791 } 792 793 void handleGetNewSurface() { 794 mNewSurfaceNeeded = true; 795 mFullRedrawNeeded = true; 796 scheduleTraversals(); 797 } 798 799 void handleScreenStateChange(boolean on) { 800 if (on != mAttachInfo.mScreenOn) { 801 mAttachInfo.mScreenOn = on; 802 if (mView != null) { 803 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 804 } 805 if (on) { 806 mFullRedrawNeeded = true; 807 scheduleTraversals(); 808 } 809 } 810 } 811 812 @Override 813 public void requestFitSystemWindows() { 814 checkThread(); 815 mFitSystemWindowsRequested = true; 816 scheduleTraversals(); 817 } 818 819 @Override 820 public void requestLayout() { 821 if (!mHandlingLayoutInLayoutRequest) { 822 checkThread(); 823 mLayoutRequested = true; 824 scheduleTraversals(); 825 } 826 } 827 828 @Override 829 public boolean isLayoutRequested() { 830 return mLayoutRequested; 831 } 832 833 void invalidate() { 834 mDirty.set(0, 0, mWidth, mHeight); 835 scheduleTraversals(); 836 } 837 838 void invalidateWorld(View view) { 839 view.invalidate(); 840 if (view instanceof ViewGroup) { 841 ViewGroup parent = (ViewGroup) view; 842 for (int i = 0; i < parent.getChildCount(); i++) { 843 invalidateWorld(parent.getChildAt(i)); 844 } 845 } 846 } 847 848 @Override 849 public void invalidateChild(View child, Rect dirty) { 850 invalidateChildInParent(null, dirty); 851 } 852 853 @Override 854 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 855 checkThread(); 856 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 857 858 if (dirty == null) { 859 invalidate(); 860 return null; 861 } else if (dirty.isEmpty() && !mIsAnimating) { 862 return null; 863 } 864 865 if (mCurScrollY != 0 || mTranslator != null) { 866 mTempRect.set(dirty); 867 dirty = mTempRect; 868 if (mCurScrollY != 0) { 869 dirty.offset(0, -mCurScrollY); 870 } 871 if (mTranslator != null) { 872 mTranslator.translateRectInAppWindowToScreen(dirty); 873 } 874 if (mAttachInfo.mScalingRequired) { 875 dirty.inset(-1, -1); 876 } 877 } 878 879 final Rect localDirty = mDirty; 880 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 881 mAttachInfo.mSetIgnoreDirtyState = true; 882 mAttachInfo.mIgnoreDirtyState = true; 883 } 884 885 // Add the new dirty rect to the current one 886 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 887 // Intersect with the bounds of the window to skip 888 // updates that lie outside of the visible region 889 final float appScale = mAttachInfo.mApplicationScale; 890 final boolean intersected = localDirty.intersect(0, 0, 891 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 892 if (!intersected) { 893 localDirty.setEmpty(); 894 } 895 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 896 scheduleTraversals(); 897 } 898 899 return null; 900 } 901 902 void setStopped(boolean stopped) { 903 if (mStopped != stopped) { 904 mStopped = stopped; 905 if (!stopped) { 906 scheduleTraversals(); 907 } 908 } 909 } 910 911 @Override 912 public ViewParent getParent() { 913 return null; 914 } 915 916 @Override 917 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 918 if (child != mView) { 919 throw new RuntimeException("child is not mine, honest!"); 920 } 921 // Note: don't apply scroll offset, because we want to know its 922 // visibility in the virtual canvas being given to the view hierarchy. 923 return r.intersect(0, 0, mWidth, mHeight); 924 } 925 926 @Override 927 public void bringChildToFront(View child) { 928 } 929 930 int getHostVisibility() { 931 return mAppVisible ? mView.getVisibility() : View.GONE; 932 } 933 934 void disposeResizeBuffer() { 935 if (mResizeBuffer != null) { 936 mResizeBuffer.destroy(); 937 mResizeBuffer = null; 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 attachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1030 if (attachInfo.mKeepScreenOn != oldScreenOn 1031 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1032 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1033 applyKeepScreenOnFlag(params); 1034 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1035 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1036 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1037 return true; 1038 } 1039 } 1040 return false; 1041 } 1042 1043 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1044 int vis = 0; 1045 // Translucent decor window flags imply stable system ui visibility. 1046 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1047 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1048 } 1049 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1050 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1051 } 1052 return vis; 1053 } 1054 1055 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1056 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1057 int childWidthMeasureSpec; 1058 int childHeightMeasureSpec; 1059 boolean windowSizeMayChange = false; 1060 1061 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1062 "Measuring " + host + " in display " + desiredWindowWidth 1063 + "x" + desiredWindowHeight + "..."); 1064 1065 boolean goodMeasure = false; 1066 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1067 // On large screens, we don't want to allow dialogs to just 1068 // stretch to fill the entire width of the screen to display 1069 // one line of text. First try doing the layout at a smaller 1070 // size to see if it will fit. 1071 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1072 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1073 int baseSize = 0; 1074 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1075 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1076 } 1077 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1078 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1079 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1080 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1081 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1082 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1083 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1084 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1085 goodMeasure = true; 1086 } else { 1087 // Didn't fit in that size... try expanding a bit. 1088 baseSize = (baseSize+desiredWindowWidth)/2; 1089 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1090 + baseSize); 1091 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1092 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1093 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1094 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1095 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1096 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1097 goodMeasure = true; 1098 } 1099 } 1100 } 1101 } 1102 1103 if (!goodMeasure) { 1104 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1105 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1106 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1107 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1108 windowSizeMayChange = true; 1109 } 1110 } 1111 1112 if (DBG) { 1113 System.out.println("======================================"); 1114 System.out.println("performTraversals -- after measure"); 1115 host.debug(); 1116 } 1117 1118 return windowSizeMayChange; 1119 } 1120 1121 /** 1122 * Modifies the input matrix such that it maps view-local coordinates to 1123 * on-screen coordinates. 1124 * 1125 * @param m input matrix to modify 1126 */ 1127 void transformMatrixToGlobal(Matrix m) { 1128 final View.AttachInfo attachInfo = mAttachInfo; 1129 m.postTranslate(attachInfo.mWindowLeft, attachInfo.mWindowTop); 1130 } 1131 1132 /** 1133 * Modifies the input matrix such that it maps on-screen coordinates to 1134 * view-local coordinates. 1135 * 1136 * @param m input matrix to modify 1137 */ 1138 void transformMatrixToLocal(Matrix m) { 1139 final View.AttachInfo attachInfo = mAttachInfo; 1140 m.preTranslate(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 1141 } 1142 1143 private void performTraversals() { 1144 // cache mView since it is used so much below... 1145 final View host = mView; 1146 1147 if (DBG) { 1148 System.out.println("======================================"); 1149 System.out.println("performTraversals"); 1150 host.debug(); 1151 } 1152 1153 if (host == null || !mAdded) 1154 return; 1155 1156 mIsInTraversal = true; 1157 mWillDrawSoon = true; 1158 boolean windowSizeMayChange = false; 1159 boolean newSurface = false; 1160 boolean surfaceChanged = false; 1161 WindowManager.LayoutParams lp = mWindowAttributes; 1162 1163 int desiredWindowWidth; 1164 int desiredWindowHeight; 1165 1166 final View.AttachInfo attachInfo = mAttachInfo; 1167 1168 final int viewVisibility = getHostVisibility(); 1169 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1170 || mNewSurfaceNeeded; 1171 1172 WindowManager.LayoutParams params = null; 1173 if (mWindowAttributesChanged) { 1174 mWindowAttributesChanged = false; 1175 surfaceChanged = true; 1176 params = lp; 1177 } 1178 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1179 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1180 params = lp; 1181 mFullRedrawNeeded = true; 1182 mLayoutRequested = true; 1183 if (mLastInCompatMode) { 1184 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1185 mLastInCompatMode = false; 1186 } else { 1187 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1188 mLastInCompatMode = true; 1189 } 1190 } 1191 1192 mWindowAttributesChangesFlag = 0; 1193 1194 Rect frame = mWinFrame; 1195 if (mFirst) { 1196 mFullRedrawNeeded = true; 1197 mLayoutRequested = true; 1198 1199 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1200 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1201 // NOTE -- system code, won't try to do compat mode. 1202 Point size = new Point(); 1203 mDisplay.getRealSize(size); 1204 desiredWindowWidth = size.x; 1205 desiredWindowHeight = size.y; 1206 } else { 1207 DisplayMetrics packageMetrics = 1208 mView.getContext().getResources().getDisplayMetrics(); 1209 desiredWindowWidth = packageMetrics.widthPixels; 1210 desiredWindowHeight = packageMetrics.heightPixels; 1211 } 1212 1213 // We used to use the following condition to choose 32 bits drawing caches: 1214 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1215 // However, windows are now always 32 bits by default, so choose 32 bits 1216 attachInfo.mUse32BitDrawingCache = true; 1217 attachInfo.mHasWindowFocus = false; 1218 attachInfo.mWindowVisibility = viewVisibility; 1219 attachInfo.mRecomputeGlobalAttributes = false; 1220 viewVisibilityChanged = false; 1221 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1222 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1223 // Set the layout direction if it has not been set before (inherit is the default) 1224 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1225 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1226 } 1227 host.dispatchAttachedToWindow(attachInfo, 0); 1228 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1229 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1230 host.fitSystemWindows(mFitSystemWindowsInsets); 1231 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1232 1233 } else { 1234 desiredWindowWidth = frame.width(); 1235 desiredWindowHeight = frame.height(); 1236 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1237 if (DEBUG_ORIENTATION) Log.v(TAG, 1238 "View " + host + " resized to: " + frame); 1239 mFullRedrawNeeded = true; 1240 mLayoutRequested = true; 1241 windowSizeMayChange = true; 1242 } 1243 } 1244 1245 if (viewVisibilityChanged) { 1246 attachInfo.mWindowVisibility = viewVisibility; 1247 host.dispatchWindowVisibilityChanged(viewVisibility); 1248 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1249 destroyHardwareResources(); 1250 } 1251 if (viewVisibility == View.GONE) { 1252 // After making a window gone, we will count it as being 1253 // shown for the first time the next time it gets focus. 1254 mHasHadWindowFocus = false; 1255 } 1256 } 1257 1258 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1259 getRunQueue().executeActions(attachInfo.mHandler); 1260 1261 boolean insetsChanged = false; 1262 1263 boolean layoutRequested = mLayoutRequested && !mStopped; 1264 if (layoutRequested) { 1265 1266 final Resources res = mView.getContext().getResources(); 1267 1268 if (mFirst) { 1269 // make sure touch mode code executes by setting cached value 1270 // to opposite of the added touch mode. 1271 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1272 ensureTouchModeLocally(mAddedTouchMode); 1273 } else { 1274 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1275 insetsChanged = true; 1276 } 1277 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1278 insetsChanged = true; 1279 } 1280 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1281 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1282 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1283 + mAttachInfo.mVisibleInsets); 1284 } 1285 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1286 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1287 windowSizeMayChange = true; 1288 1289 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1290 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1291 // NOTE -- system code, won't try to do compat mode. 1292 Point size = new Point(); 1293 mDisplay.getRealSize(size); 1294 desiredWindowWidth = size.x; 1295 desiredWindowHeight = size.y; 1296 } else { 1297 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1298 desiredWindowWidth = packageMetrics.widthPixels; 1299 desiredWindowHeight = packageMetrics.heightPixels; 1300 } 1301 } 1302 } 1303 1304 // Ask host how big it wants to be 1305 windowSizeMayChange |= measureHierarchy(host, lp, res, 1306 desiredWindowWidth, desiredWindowHeight); 1307 } 1308 1309 if (collectViewAttributes()) { 1310 params = lp; 1311 } 1312 if (attachInfo.mForceReportNewAttributes) { 1313 attachInfo.mForceReportNewAttributes = false; 1314 params = lp; 1315 } 1316 1317 if (mFirst || attachInfo.mViewVisibilityChanged) { 1318 attachInfo.mViewVisibilityChanged = false; 1319 int resizeMode = mSoftInputMode & 1320 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1321 // If we are in auto resize mode, then we need to determine 1322 // what mode to use now. 1323 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1324 final int N = attachInfo.mScrollContainers.size(); 1325 for (int i=0; i<N; i++) { 1326 if (attachInfo.mScrollContainers.get(i).isShown()) { 1327 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1328 } 1329 } 1330 if (resizeMode == 0) { 1331 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1332 } 1333 if ((lp.softInputMode & 1334 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1335 lp.softInputMode = (lp.softInputMode & 1336 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1337 resizeMode; 1338 params = lp; 1339 } 1340 } 1341 } 1342 1343 if (params != null) { 1344 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1345 if (!PixelFormat.formatHasAlpha(params.format)) { 1346 params.format = PixelFormat.TRANSLUCENT; 1347 } 1348 } 1349 mAttachInfo.mOverscanRequested = (params.flags 1350 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1351 } 1352 1353 if (mFitSystemWindowsRequested) { 1354 mFitSystemWindowsRequested = false; 1355 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1356 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1357 host.fitSystemWindows(mFitSystemWindowsInsets); 1358 if (mLayoutRequested) { 1359 // Short-circuit catching a new layout request here, so 1360 // we don't need to go through two layout passes when things 1361 // change due to fitting system windows, which can happen a lot. 1362 windowSizeMayChange |= measureHierarchy(host, lp, 1363 mView.getContext().getResources(), 1364 desiredWindowWidth, desiredWindowHeight); 1365 } 1366 } 1367 1368 if (layoutRequested) { 1369 // Clear this now, so that if anything requests a layout in the 1370 // rest of this function we will catch it and re-run a full 1371 // layout pass. 1372 mLayoutRequested = false; 1373 } 1374 1375 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1376 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1377 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1378 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1379 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1380 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1381 1382 // Determine whether to compute insets. 1383 // If there are no inset listeners remaining then we may still need to compute 1384 // insets in case the old insets were non-empty and must be reset. 1385 final boolean computesInternalInsets = 1386 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1387 || attachInfo.mHasNonEmptyGivenInternalInsets; 1388 1389 boolean insetsPending = false; 1390 int relayoutResult = 0; 1391 1392 if (mFirst || windowShouldResize || insetsChanged || 1393 viewVisibilityChanged || params != null) { 1394 1395 if (viewVisibility == View.VISIBLE) { 1396 // If this window is giving internal insets to the window 1397 // manager, and it is being added or changing its visibility, 1398 // then we want to first give the window manager "fake" 1399 // insets to cause it to effectively ignore the content of 1400 // the window during layout. This avoids it briefly causing 1401 // other windows to resize/move based on the raw frame of the 1402 // window, waiting until we can finish laying out this window 1403 // and get back to the window manager with the ultimately 1404 // computed insets. 1405 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1406 } 1407 1408 if (mSurfaceHolder != null) { 1409 mSurfaceHolder.mSurfaceLock.lock(); 1410 mDrawingAllowed = true; 1411 } 1412 1413 boolean hwInitialized = false; 1414 boolean contentInsetsChanged = false; 1415 boolean hadSurface = mSurface.isValid(); 1416 1417 try { 1418 if (DEBUG_LAYOUT) { 1419 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1420 host.getMeasuredHeight() + ", params=" + params); 1421 } 1422 1423 final int surfaceGenerationId = mSurface.getGenerationId(); 1424 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1425 if (!mDrawDuringWindowsAnimating && 1426 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1427 mWindowsAnimating = true; 1428 } 1429 1430 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1431 + " overscan=" + mPendingOverscanInsets.toShortString() 1432 + " content=" + mPendingContentInsets.toShortString() 1433 + " visible=" + mPendingVisibleInsets.toShortString() 1434 + " surface=" + mSurface); 1435 1436 if (mPendingConfiguration.seq != 0) { 1437 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1438 + mPendingConfiguration); 1439 updateConfiguration(mPendingConfiguration, !mFirst); 1440 mPendingConfiguration.seq = 0; 1441 } 1442 1443 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1444 mAttachInfo.mOverscanInsets); 1445 contentInsetsChanged = !mPendingContentInsets.equals( 1446 mAttachInfo.mContentInsets); 1447 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1448 mAttachInfo.mVisibleInsets); 1449 if (contentInsetsChanged) { 1450 if (mWidth > 0 && mHeight > 0 && lp != null && 1451 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1452 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1453 mSurface != null && mSurface.isValid() && 1454 !mAttachInfo.mTurnOffWindowResizeAnim && 1455 mAttachInfo.mHardwareRenderer != null && 1456 mAttachInfo.mHardwareRenderer.isEnabled() && 1457 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1458 1459 disposeResizeBuffer(); 1460 1461 if (mResizeBuffer == null) { 1462 mResizeBuffer = mAttachInfo.mHardwareRenderer.createDisplayListLayer( 1463 mWidth, mHeight); 1464 } 1465 mResizeBuffer.prepare(mWidth, mHeight, false); 1466 DisplayList layerDisplayList = mResizeBuffer.startRecording(); 1467 HardwareCanvas layerCanvas = layerDisplayList.start(mWidth, mHeight); 1468 final int restoreCount = layerCanvas.save(); 1469 1470 int yoff; 1471 final boolean scrolling = mScroller != null 1472 && mScroller.computeScrollOffset(); 1473 if (scrolling) { 1474 yoff = mScroller.getCurrY(); 1475 mScroller.abortAnimation(); 1476 } else { 1477 yoff = mScrollY; 1478 } 1479 1480 layerCanvas.translate(0, -yoff); 1481 if (mTranslator != null) { 1482 mTranslator.translateCanvas(layerCanvas); 1483 } 1484 1485 DisplayList displayList = mView.mDisplayList; 1486 if (displayList != null && displayList.isValid()) { 1487 layerCanvas.drawDisplayList(displayList, null, 1488 DisplayList.FLAG_CLIP_CHILDREN); 1489 } else { 1490 mView.draw(layerCanvas); 1491 } 1492 1493 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1494 1495 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1496 mResizeBufferDuration = mView.getResources().getInteger( 1497 com.android.internal.R.integer.config_mediumAnimTime); 1498 1499 layerCanvas.restoreToCount(restoreCount); 1500 layerDisplayList.end(); 1501 layerDisplayList.setCaching(true); 1502 layerDisplayList.setLeftTopRightBottom(0, 0, mWidth, mHeight); 1503 mTempRect.set(0, 0, mWidth, mHeight); 1504 mResizeBuffer.endRecording(mTempRect); 1505 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 1506 } 1507 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1508 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1509 + mAttachInfo.mContentInsets); 1510 } 1511 if (overscanInsetsChanged) { 1512 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1513 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1514 + mAttachInfo.mOverscanInsets); 1515 // Need to relayout with content insets. 1516 contentInsetsChanged = true; 1517 } 1518 if (contentInsetsChanged || mLastSystemUiVisibility != 1519 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1520 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1521 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1522 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1523 mFitSystemWindowsRequested = false; 1524 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1525 host.fitSystemWindows(mFitSystemWindowsInsets); 1526 } 1527 if (visibleInsetsChanged) { 1528 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1529 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1530 + mAttachInfo.mVisibleInsets); 1531 } 1532 1533 if (!hadSurface) { 1534 if (mSurface.isValid()) { 1535 // If we are creating a new surface, then we need to 1536 // completely redraw it. Also, when we get to the 1537 // point of drawing it we will hold off and schedule 1538 // a new traversal instead. This is so we can tell the 1539 // window manager about all of the windows being displayed 1540 // before actually drawing them, so it can display then 1541 // all at once. 1542 newSurface = true; 1543 mFullRedrawNeeded = true; 1544 mPreviousTransparentRegion.setEmpty(); 1545 1546 if (mAttachInfo.mHardwareRenderer != null) { 1547 try { 1548 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1549 mSurface); 1550 } catch (OutOfResourcesException e) { 1551 handleOutOfResourcesException(e); 1552 return; 1553 } 1554 } 1555 } 1556 } else if (!mSurface.isValid()) { 1557 // If the surface has been removed, then reset the scroll 1558 // positions. 1559 if (mLastScrolledFocus != null) { 1560 mLastScrolledFocus.clear(); 1561 } 1562 mScrollY = mCurScrollY = 0; 1563 if (mScroller != null) { 1564 mScroller.abortAnimation(); 1565 } 1566 disposeResizeBuffer(); 1567 // Our surface is gone 1568 if (mAttachInfo.mHardwareRenderer != null && 1569 mAttachInfo.mHardwareRenderer.isEnabled()) { 1570 mAttachInfo.mHardwareRenderer.destroy(true); 1571 } 1572 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1573 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1574 mFullRedrawNeeded = true; 1575 try { 1576 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1577 } catch (OutOfResourcesException e) { 1578 handleOutOfResourcesException(e); 1579 return; 1580 } 1581 } 1582 } catch (RemoteException e) { 1583 } 1584 1585 if (DEBUG_ORIENTATION) Log.v( 1586 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1587 1588 attachInfo.mWindowLeft = frame.left; 1589 attachInfo.mWindowTop = frame.top; 1590 1591 // !!FIXME!! This next section handles the case where we did not get the 1592 // window size we asked for. We should avoid this by getting a maximum size from 1593 // the window session beforehand. 1594 if (mWidth != frame.width() || mHeight != frame.height()) { 1595 mWidth = frame.width(); 1596 mHeight = frame.height(); 1597 } 1598 1599 if (mSurfaceHolder != null) { 1600 // The app owns the surface; tell it about what is going on. 1601 if (mSurface.isValid()) { 1602 // XXX .copyFrom() doesn't work! 1603 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1604 mSurfaceHolder.mSurface = mSurface; 1605 } 1606 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1607 mSurfaceHolder.mSurfaceLock.unlock(); 1608 if (mSurface.isValid()) { 1609 if (!hadSurface) { 1610 mSurfaceHolder.ungetCallbacks(); 1611 1612 mIsCreating = true; 1613 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1614 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1615 if (callbacks != null) { 1616 for (SurfaceHolder.Callback c : callbacks) { 1617 c.surfaceCreated(mSurfaceHolder); 1618 } 1619 } 1620 surfaceChanged = true; 1621 } 1622 if (surfaceChanged) { 1623 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1624 lp.format, mWidth, mHeight); 1625 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1626 if (callbacks != null) { 1627 for (SurfaceHolder.Callback c : callbacks) { 1628 c.surfaceChanged(mSurfaceHolder, lp.format, 1629 mWidth, mHeight); 1630 } 1631 } 1632 } 1633 mIsCreating = false; 1634 } else if (hadSurface) { 1635 mSurfaceHolder.ungetCallbacks(); 1636 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1637 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1638 if (callbacks != null) { 1639 for (SurfaceHolder.Callback c : callbacks) { 1640 c.surfaceDestroyed(mSurfaceHolder); 1641 } 1642 } 1643 mSurfaceHolder.mSurfaceLock.lock(); 1644 try { 1645 mSurfaceHolder.mSurface = new Surface(); 1646 } finally { 1647 mSurfaceHolder.mSurfaceLock.unlock(); 1648 } 1649 } 1650 } 1651 1652 if (mAttachInfo.mHardwareRenderer != null && 1653 mAttachInfo.mHardwareRenderer.isEnabled()) { 1654 if (hwInitialized || 1655 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1656 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1657 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1658 if (!hwInitialized) { 1659 mAttachInfo.mHardwareRenderer.invalidate(mSurface); 1660 mFullRedrawNeeded = true; 1661 } 1662 } 1663 } 1664 1665 if (!mStopped) { 1666 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1667 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1668 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1669 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1670 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1671 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1672 1673 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1674 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1675 + " mHeight=" + mHeight 1676 + " measuredHeight=" + host.getMeasuredHeight() 1677 + " coveredInsetsChanged=" + contentInsetsChanged); 1678 1679 // Ask host how big it wants to be 1680 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1681 1682 // Implementation of weights from WindowManager.LayoutParams 1683 // We just grow the dimensions as needed and re-measure if 1684 // needs be 1685 int width = host.getMeasuredWidth(); 1686 int height = host.getMeasuredHeight(); 1687 boolean measureAgain = false; 1688 1689 if (lp.horizontalWeight > 0.0f) { 1690 width += (int) ((mWidth - width) * lp.horizontalWeight); 1691 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1692 MeasureSpec.EXACTLY); 1693 measureAgain = true; 1694 } 1695 if (lp.verticalWeight > 0.0f) { 1696 height += (int) ((mHeight - height) * lp.verticalWeight); 1697 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1698 MeasureSpec.EXACTLY); 1699 measureAgain = true; 1700 } 1701 1702 if (measureAgain) { 1703 if (DEBUG_LAYOUT) Log.v(TAG, 1704 "And hey let's measure once more: width=" + width 1705 + " height=" + height); 1706 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1707 } 1708 1709 layoutRequested = true; 1710 } 1711 } 1712 } else { 1713 // Not the first pass and no window/insets/visibility change but the window 1714 // may have moved and we need check that and if so to update the left and right 1715 // in the attach info. We translate only the window frame since on window move 1716 // the window manager tells us only for the new frame but the insets are the 1717 // same and we do not want to translate them more than once. 1718 1719 // TODO: Well, we are checking whether the frame has changed similarly 1720 // to how this is done for the insets. This is however incorrect since 1721 // the insets and the frame are translated. For example, the old frame 1722 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1723 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1724 // true since we are comparing a not translated value to a translated one. 1725 // This scenario is rare but we may want to fix that. 1726 1727 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1728 || attachInfo.mWindowTop != frame.top); 1729 if (windowMoved) { 1730 if (mTranslator != null) { 1731 mTranslator.translateRectInScreenToAppWinFrame(frame); 1732 } 1733 attachInfo.mWindowLeft = frame.left; 1734 attachInfo.mWindowTop = frame.top; 1735 } 1736 } 1737 1738 final boolean didLayout = layoutRequested && !mStopped; 1739 boolean triggerGlobalLayoutListener = didLayout 1740 || attachInfo.mRecomputeGlobalAttributes; 1741 if (didLayout) { 1742 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1743 1744 // By this point all views have been sized and positioned 1745 // We can compute the transparent area 1746 1747 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1748 // start out transparent 1749 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1750 host.getLocationInWindow(mTmpLocation); 1751 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1752 mTmpLocation[0] + host.mRight - host.mLeft, 1753 mTmpLocation[1] + host.mBottom - host.mTop); 1754 1755 host.gatherTransparentRegion(mTransparentRegion); 1756 if (mTranslator != null) { 1757 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1758 } 1759 1760 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1761 mPreviousTransparentRegion.set(mTransparentRegion); 1762 mFullRedrawNeeded = true; 1763 // reconfigure window manager 1764 try { 1765 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1766 } catch (RemoteException e) { 1767 } 1768 } 1769 } 1770 1771 if (DBG) { 1772 System.out.println("======================================"); 1773 System.out.println("performTraversals -- after setFrame"); 1774 host.debug(); 1775 } 1776 } 1777 1778 if (triggerGlobalLayoutListener) { 1779 attachInfo.mRecomputeGlobalAttributes = false; 1780 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1781 } 1782 1783 if (computesInternalInsets) { 1784 // Clear the original insets. 1785 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1786 insets.reset(); 1787 1788 // Compute new insets in place. 1789 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1790 attachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1791 1792 // Tell the window manager. 1793 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1794 mLastGivenInsets.set(insets); 1795 1796 // Translate insets to screen coordinates if needed. 1797 final Rect contentInsets; 1798 final Rect visibleInsets; 1799 final Region touchableRegion; 1800 if (mTranslator != null) { 1801 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1802 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1803 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1804 } else { 1805 contentInsets = insets.contentInsets; 1806 visibleInsets = insets.visibleInsets; 1807 touchableRegion = insets.touchableRegion; 1808 } 1809 1810 try { 1811 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1812 contentInsets, visibleInsets, touchableRegion); 1813 } catch (RemoteException e) { 1814 } 1815 } 1816 } 1817 1818 boolean skipDraw = false; 1819 1820 if (mFirst) { 1821 // handle first focus request 1822 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1823 + mView.hasFocus()); 1824 if (mView != null) { 1825 if (!mView.hasFocus()) { 1826 mView.requestFocus(View.FOCUS_FORWARD); 1827 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1828 + mView.findFocus()); 1829 } else { 1830 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1831 + mView.findFocus()); 1832 } 1833 } 1834 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1835 // The first time we relayout the window, if the system is 1836 // doing window animations, we want to hold of on any future 1837 // draws until the animation is done. 1838 mWindowsAnimating = true; 1839 } 1840 } else if (mWindowsAnimating) { 1841 skipDraw = true; 1842 } 1843 1844 mFirst = false; 1845 mWillDrawSoon = false; 1846 mNewSurfaceNeeded = false; 1847 mViewVisibility = viewVisibility; 1848 1849 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1850 final boolean imTarget = WindowManager.LayoutParams 1851 .mayUseInputMethod(mWindowAttributes.flags); 1852 if (imTarget != mLastWasImTarget) { 1853 mLastWasImTarget = imTarget; 1854 InputMethodManager imm = InputMethodManager.peekInstance(); 1855 if (imm != null && imTarget) { 1856 imm.startGettingWindowFocus(mView); 1857 imm.onWindowFocus(mView, mView.findFocus(), 1858 mWindowAttributes.softInputMode, 1859 !mHasHadWindowFocus, mWindowAttributes.flags); 1860 } 1861 } 1862 } 1863 1864 // Remember if we must report the next draw. 1865 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1866 mReportNextDraw = true; 1867 } 1868 1869 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1870 viewVisibility != View.VISIBLE; 1871 1872 if (!cancelDraw && !newSurface) { 1873 if (!skipDraw || mReportNextDraw) { 1874 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1875 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1876 mPendingTransitions.get(i).startChangingAnimations(); 1877 } 1878 mPendingTransitions.clear(); 1879 } 1880 1881 performDraw(); 1882 } 1883 } else { 1884 if (viewVisibility == View.VISIBLE) { 1885 // Try again 1886 scheduleTraversals(); 1887 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1888 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1889 mPendingTransitions.get(i).endChangingAnimations(); 1890 } 1891 mPendingTransitions.clear(); 1892 } 1893 } 1894 1895 mIsInTraversal = false; 1896 } 1897 1898 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1899 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1900 try { 1901 if (!mWindowSession.outOfMemory(mWindow) && 1902 Process.myUid() != Process.SYSTEM_UID) { 1903 Slog.w(TAG, "No processes killed for memory; killing self"); 1904 Process.killProcess(Process.myPid()); 1905 } 1906 } catch (RemoteException ex) { 1907 } 1908 mLayoutRequested = true; // ask wm for a new surface next time. 1909 } 1910 1911 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1912 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1913 try { 1914 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1915 } finally { 1916 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1917 } 1918 } 1919 1920 /** 1921 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1922 * is currently undergoing a layout pass. 1923 * 1924 * @return whether the view hierarchy is currently undergoing a layout pass 1925 */ 1926 boolean isInLayout() { 1927 return mInLayout; 1928 } 1929 1930 /** 1931 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1932 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1933 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1934 * all children in that container hierarchy are measured and laid out at the end of the layout 1935 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1936 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1937 * we check all of those views to see if any still have pending layout requests, which 1938 * indicates that they were not correctly handled by their container hierarchy. If that is 1939 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1940 * to blank containers, and force a second request/measure/layout pass in this frame. If 1941 * more requestLayout() calls are received during that second layout pass, we post those 1942 * requests to the next frame to avoid possible infinite loops. 1943 * 1944 * <p>The return value from this method indicates whether the request should proceed 1945 * (if it is a request during the first layout pass) or should be skipped and posted to the 1946 * next frame (if it is a request during the second layout pass).</p> 1947 * 1948 * @param view the view that requested the layout. 1949 * 1950 * @return true if request should proceed, false otherwise. 1951 */ 1952 boolean requestLayoutDuringLayout(final View view) { 1953 if (view.mParent == null || view.mAttachInfo == null) { 1954 // Would not normally trigger another layout, so just let it pass through as usual 1955 return true; 1956 } 1957 if (!mLayoutRequesters.contains(view)) { 1958 mLayoutRequesters.add(view); 1959 } 1960 if (!mHandlingLayoutInLayoutRequest) { 1961 // Let the request proceed normally; it will be processed in a second layout pass 1962 // if necessary 1963 return true; 1964 } else { 1965 // Don't let the request proceed during the second layout pass. 1966 // It will post to the next frame instead. 1967 return false; 1968 } 1969 } 1970 1971 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1972 int desiredWindowHeight) { 1973 mLayoutRequested = false; 1974 mScrollMayChange = true; 1975 mInLayout = true; 1976 1977 final View host = mView; 1978 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1979 Log.v(TAG, "Laying out " + host + " to (" + 1980 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1981 } 1982 1983 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1984 try { 1985 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1986 1987 mInLayout = false; 1988 int numViewsRequestingLayout = mLayoutRequesters.size(); 1989 if (numViewsRequestingLayout > 0) { 1990 // requestLayout() was called during layout. 1991 // If no layout-request flags are set on the requesting views, there is no problem. 1992 // If some requests are still pending, then we need to clear those flags and do 1993 // a full request/measure/layout pass to handle this situation. 1994 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1995 false); 1996 if (validLayoutRequesters != null) { 1997 // Set this flag to indicate that any further requests are happening during 1998 // the second pass, which may result in posting those requests to the next 1999 // frame instead 2000 mHandlingLayoutInLayoutRequest = true; 2001 2002 // Process fresh layout requests, then measure and layout 2003 int numValidRequests = validLayoutRequesters.size(); 2004 for (int i = 0; i < numValidRequests; ++i) { 2005 final View view = validLayoutRequesters.get(i); 2006 Log.w("View", "requestLayout() improperly called by " + view + 2007 " during layout: running second layout pass"); 2008 view.requestLayout(); 2009 } 2010 measureHierarchy(host, lp, mView.getContext().getResources(), 2011 desiredWindowWidth, desiredWindowHeight); 2012 mInLayout = true; 2013 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2014 2015 mHandlingLayoutInLayoutRequest = false; 2016 2017 // Check the valid requests again, this time without checking/clearing the 2018 // layout flags, since requests happening during the second pass get noop'd 2019 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2020 if (validLayoutRequesters != null) { 2021 final ArrayList<View> finalRequesters = validLayoutRequesters; 2022 // Post second-pass requests to the next frame 2023 getRunQueue().post(new Runnable() { 2024 @Override 2025 public void run() { 2026 int numValidRequests = finalRequesters.size(); 2027 for (int i = 0; i < numValidRequests; ++i) { 2028 final View view = finalRequesters.get(i); 2029 Log.w("View", "requestLayout() improperly called by " + view + 2030 " during second layout pass: posting in next frame"); 2031 view.requestLayout(); 2032 } 2033 } 2034 }); 2035 } 2036 } 2037 2038 } 2039 } finally { 2040 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2041 } 2042 mInLayout = false; 2043 } 2044 2045 /** 2046 * This method is called during layout when there have been calls to requestLayout() during 2047 * layout. It walks through the list of views that requested layout to determine which ones 2048 * still need it, based on visibility in the hierarchy and whether they have already been 2049 * handled (as is usually the case with ListView children). 2050 * 2051 * @param layoutRequesters The list of views that requested layout during layout 2052 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2053 * If so, the FORCE_LAYOUT flag was not set on requesters. 2054 * @return A list of the actual views that still need to be laid out. 2055 */ 2056 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2057 boolean secondLayoutRequests) { 2058 2059 int numViewsRequestingLayout = layoutRequesters.size(); 2060 ArrayList<View> validLayoutRequesters = null; 2061 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2062 View view = layoutRequesters.get(i); 2063 if (view != null && view.mAttachInfo != null && view.mParent != null && 2064 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2065 View.PFLAG_FORCE_LAYOUT)) { 2066 boolean gone = false; 2067 View parent = view; 2068 // Only trigger new requests for views in a non-GONE hierarchy 2069 while (parent != null) { 2070 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2071 gone = true; 2072 break; 2073 } 2074 if (parent.mParent instanceof View) { 2075 parent = (View) parent.mParent; 2076 } else { 2077 parent = null; 2078 } 2079 } 2080 if (!gone) { 2081 if (validLayoutRequesters == null) { 2082 validLayoutRequesters = new ArrayList<View>(); 2083 } 2084 validLayoutRequesters.add(view); 2085 } 2086 } 2087 } 2088 if (!secondLayoutRequests) { 2089 // If we're checking the layout flags, then we need to clean them up also 2090 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2091 View view = layoutRequesters.get(i); 2092 while (view != null && 2093 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2094 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2095 if (view.mParent instanceof View) { 2096 view = (View) view.mParent; 2097 } else { 2098 view = null; 2099 } 2100 } 2101 } 2102 } 2103 layoutRequesters.clear(); 2104 return validLayoutRequesters; 2105 } 2106 2107 @Override 2108 public void requestTransparentRegion(View child) { 2109 // the test below should not fail unless someone is messing with us 2110 checkThread(); 2111 if (mView == child) { 2112 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2113 // Need to make sure we re-evaluate the window attributes next 2114 // time around, to ensure the window has the correct format. 2115 mWindowAttributesChanged = true; 2116 mWindowAttributesChangesFlag = 0; 2117 requestLayout(); 2118 } 2119 } 2120 2121 /** 2122 * Figures out the measure spec for the root view in a window based on it's 2123 * layout params. 2124 * 2125 * @param windowSize 2126 * The available width or height of the window 2127 * 2128 * @param rootDimension 2129 * The layout params for one dimension (width or height) of the 2130 * window. 2131 * 2132 * @return The measure spec to use to measure the root view. 2133 */ 2134 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2135 int measureSpec; 2136 switch (rootDimension) { 2137 2138 case ViewGroup.LayoutParams.MATCH_PARENT: 2139 // Window can't resize. Force root view to be windowSize. 2140 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2141 break; 2142 case ViewGroup.LayoutParams.WRAP_CONTENT: 2143 // Window can resize. Set max size for root view. 2144 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2145 break; 2146 default: 2147 // Window wants to be an exact size. Force root view to be that size. 2148 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2149 break; 2150 } 2151 return measureSpec; 2152 } 2153 2154 int mHardwareYOffset; 2155 int mResizeAlpha; 2156 final Paint mResizePaint = new Paint(); 2157 2158 @Override 2159 public void onHardwarePreDraw(HardwareCanvas canvas) { 2160 canvas.translate(0, -mHardwareYOffset); 2161 } 2162 2163 @Override 2164 public void onHardwarePostDraw(HardwareCanvas canvas) { 2165 if (mResizeBuffer != null) { 2166 mResizePaint.setAlpha(mResizeAlpha); 2167 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2168 } 2169 // TODO: this 2170 if (!HardwareRenderer.sUseRenderThread) { 2171 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2172 } 2173 } 2174 2175 /** 2176 * @hide 2177 */ 2178 void outputDisplayList(View view) { 2179 DisplayList displayList = view.getDisplayList(); 2180 if (displayList != null) { 2181 displayList.output(); 2182 } 2183 } 2184 2185 /** 2186 * @see #PROPERTY_PROFILE_RENDERING 2187 */ 2188 private void profileRendering(boolean enabled) { 2189 if (mProfileRendering) { 2190 mRenderProfilingEnabled = enabled; 2191 2192 if (mRenderProfiler != null) { 2193 mChoreographer.removeFrameCallback(mRenderProfiler); 2194 } 2195 if (mRenderProfilingEnabled) { 2196 if (mRenderProfiler == null) { 2197 mRenderProfiler = new Choreographer.FrameCallback() { 2198 @Override 2199 public void doFrame(long frameTimeNanos) { 2200 mDirty.set(0, 0, mWidth, mHeight); 2201 scheduleTraversals(); 2202 if (mRenderProfilingEnabled) { 2203 mChoreographer.postFrameCallback(mRenderProfiler); 2204 } 2205 } 2206 }; 2207 } 2208 mChoreographer.postFrameCallback(mRenderProfiler); 2209 } else { 2210 mRenderProfiler = null; 2211 } 2212 } 2213 } 2214 2215 /** 2216 * Called from draw() when DEBUG_FPS is enabled 2217 */ 2218 private void trackFPS() { 2219 // Tracks frames per second drawn. First value in a series of draws may be bogus 2220 // because it down not account for the intervening idle time 2221 long nowTime = System.currentTimeMillis(); 2222 if (mFpsStartTime < 0) { 2223 mFpsStartTime = mFpsPrevTime = nowTime; 2224 mFpsNumFrames = 0; 2225 } else { 2226 ++mFpsNumFrames; 2227 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2228 long frameTime = nowTime - mFpsPrevTime; 2229 long totalTime = nowTime - mFpsStartTime; 2230 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2231 mFpsPrevTime = nowTime; 2232 if (totalTime > 1000) { 2233 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2234 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2235 mFpsStartTime = nowTime; 2236 mFpsNumFrames = 0; 2237 } 2238 } 2239 } 2240 2241 private void performDraw() { 2242 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2243 return; 2244 } 2245 2246 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2247 mFullRedrawNeeded = false; 2248 2249 mIsDrawing = true; 2250 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2251 try { 2252 draw(fullRedrawNeeded); 2253 } finally { 2254 mIsDrawing = false; 2255 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2256 } 2257 2258 if (mReportNextDraw) { 2259 mReportNextDraw = false; 2260 2261 if (LOCAL_LOGV) { 2262 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2263 } 2264 if (mSurfaceHolder != null && mSurface.isValid()) { 2265 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2266 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2267 if (callbacks != null) { 2268 for (SurfaceHolder.Callback c : callbacks) { 2269 if (c instanceof SurfaceHolder.Callback2) { 2270 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2271 mSurfaceHolder); 2272 } 2273 } 2274 } 2275 } 2276 try { 2277 mWindowSession.finishDrawing(mWindow); 2278 } catch (RemoteException e) { 2279 } 2280 } 2281 } 2282 2283 private void draw(boolean fullRedrawNeeded) { 2284 Surface surface = mSurface; 2285 if (!surface.isValid()) { 2286 return; 2287 } 2288 2289 if (DEBUG_FPS) { 2290 trackFPS(); 2291 } 2292 2293 if (!sFirstDrawComplete) { 2294 synchronized (sFirstDrawHandlers) { 2295 sFirstDrawComplete = true; 2296 final int count = sFirstDrawHandlers.size(); 2297 for (int i = 0; i< count; i++) { 2298 mHandler.post(sFirstDrawHandlers.get(i)); 2299 } 2300 } 2301 } 2302 2303 scrollToRectOrFocus(null, false); 2304 2305 final AttachInfo attachInfo = mAttachInfo; 2306 if (attachInfo.mViewScrollChanged) { 2307 attachInfo.mViewScrollChanged = false; 2308 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2309 } 2310 2311 int yoff; 2312 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2313 if (animating) { 2314 yoff = mScroller.getCurrY(); 2315 } else { 2316 yoff = mScrollY; 2317 } 2318 if (mCurScrollY != yoff) { 2319 mCurScrollY = yoff; 2320 fullRedrawNeeded = true; 2321 } 2322 2323 final float appScale = attachInfo.mApplicationScale; 2324 final boolean scalingRequired = attachInfo.mScalingRequired; 2325 2326 int resizeAlpha = 0; 2327 if (mResizeBuffer != null) { 2328 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2329 if (deltaTime < mResizeBufferDuration) { 2330 float amt = deltaTime/(float) mResizeBufferDuration; 2331 amt = mResizeInterpolator.getInterpolation(amt); 2332 animating = true; 2333 resizeAlpha = 255 - (int)(amt*255); 2334 } else { 2335 disposeResizeBuffer(); 2336 } 2337 } 2338 2339 final Rect dirty = mDirty; 2340 if (mSurfaceHolder != null) { 2341 // The app owns the surface, we won't draw. 2342 dirty.setEmpty(); 2343 if (animating) { 2344 if (mScroller != null) { 2345 mScroller.abortAnimation(); 2346 } 2347 disposeResizeBuffer(); 2348 } 2349 return; 2350 } 2351 2352 if (fullRedrawNeeded) { 2353 attachInfo.mIgnoreDirtyState = true; 2354 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2355 } 2356 2357 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2358 Log.v(TAG, "Draw " + mView + "/" 2359 + mWindowAttributes.getTitle() 2360 + ": dirty={" + dirty.left + "," + dirty.top 2361 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2362 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2363 appScale + ", width=" + mWidth + ", height=" + mHeight); 2364 } 2365 2366 invalidateDisplayLists(); 2367 2368 attachInfo.mTreeObserver.dispatchOnDraw(); 2369 2370 if (!dirty.isEmpty() || mIsAnimating) { 2371 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2372 // Draw with hardware renderer. 2373 mIsAnimating = false; 2374 mHardwareYOffset = yoff; 2375 mResizeAlpha = resizeAlpha; 2376 2377 mCurrentDirty.set(dirty); 2378 dirty.setEmpty(); 2379 2380 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2381 animating ? null : mCurrentDirty); 2382 } else { 2383 // If we get here with a disabled & requested hardware renderer, something went 2384 // wrong (an invalidate posted right before we destroyed the hardware surface 2385 // for instance) so we should just bail out. Locking the surface with software 2386 // rendering at this point would lock it forever and prevent hardware renderer 2387 // from doing its job when it comes back. 2388 // Before we request a new frame we must however attempt to reinitiliaze the 2389 // hardware renderer if it's in requested state. This would happen after an 2390 // eglTerminate() for instance. 2391 if (attachInfo.mHardwareRenderer != null && 2392 !attachInfo.mHardwareRenderer.isEnabled() && 2393 attachInfo.mHardwareRenderer.isRequested()) { 2394 2395 try { 2396 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2397 mSurface); 2398 } catch (OutOfResourcesException e) { 2399 handleOutOfResourcesException(e); 2400 return; 2401 } 2402 2403 mFullRedrawNeeded = true; 2404 scheduleTraversals(); 2405 return; 2406 } 2407 2408 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2409 return; 2410 } 2411 } 2412 } 2413 2414 if (animating) { 2415 mFullRedrawNeeded = true; 2416 scheduleTraversals(); 2417 } 2418 } 2419 2420 /** 2421 * @return true if drawing was succesfull, false if an error occurred 2422 */ 2423 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2424 boolean scalingRequired, Rect dirty) { 2425 2426 // Draw with software renderer. 2427 Canvas canvas; 2428 try { 2429 int left = dirty.left; 2430 int top = dirty.top; 2431 int right = dirty.right; 2432 int bottom = dirty.bottom; 2433 2434 canvas = mSurface.lockCanvas(dirty); 2435 2436 // The dirty rectangle can be modified by Surface.lockCanvas() 2437 //noinspection ConstantConditions 2438 if (left != dirty.left || top != dirty.top || right != dirty.right || 2439 bottom != dirty.bottom) { 2440 attachInfo.mIgnoreDirtyState = true; 2441 } 2442 2443 // TODO: Do this in native 2444 canvas.setDensity(mDensity); 2445 } catch (Surface.OutOfResourcesException e) { 2446 handleOutOfResourcesException(e); 2447 return false; 2448 } catch (IllegalArgumentException e) { 2449 Log.e(TAG, "Could not lock surface", e); 2450 // Don't assume this is due to out of memory, it could be 2451 // something else, and if it is something else then we could 2452 // kill stuff (or ourself) for no reason. 2453 mLayoutRequested = true; // ask wm for a new surface next time. 2454 return false; 2455 } 2456 2457 try { 2458 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2459 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2460 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2461 //canvas.drawARGB(255, 255, 0, 0); 2462 } 2463 2464 // If this bitmap's format includes an alpha channel, we 2465 // need to clear it before drawing so that the child will 2466 // properly re-composite its drawing on a transparent 2467 // background. This automatically respects the clip/dirty region 2468 // or 2469 // If we are applying an offset, we need to clear the area 2470 // where the offset doesn't appear to avoid having garbage 2471 // left in the blank areas. 2472 if (!canvas.isOpaque() || yoff != 0) { 2473 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2474 } 2475 2476 dirty.setEmpty(); 2477 mIsAnimating = false; 2478 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2479 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2480 2481 if (DEBUG_DRAW) { 2482 Context cxt = mView.getContext(); 2483 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2484 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2485 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2486 } 2487 try { 2488 canvas.translate(0, -yoff); 2489 if (mTranslator != null) { 2490 mTranslator.translateCanvas(canvas); 2491 } 2492 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2493 attachInfo.mSetIgnoreDirtyState = false; 2494 2495 mView.draw(canvas); 2496 2497 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2498 } finally { 2499 if (!attachInfo.mSetIgnoreDirtyState) { 2500 // Only clear the flag if it was not set during the mView.draw() call 2501 attachInfo.mIgnoreDirtyState = false; 2502 } 2503 } 2504 } finally { 2505 try { 2506 surface.unlockCanvasAndPost(canvas); 2507 } catch (IllegalArgumentException e) { 2508 Log.e(TAG, "Could not unlock surface", e); 2509 mLayoutRequested = true; // ask wm for a new surface next time. 2510 //noinspection ReturnInsideFinallyBlock 2511 return false; 2512 } 2513 2514 if (LOCAL_LOGV) { 2515 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2516 } 2517 } 2518 return true; 2519 } 2520 2521 /** 2522 * We want to draw a highlight around the current accessibility focused. 2523 * Since adding a style for all possible view is not a viable option we 2524 * have this specialized drawing method. 2525 * 2526 * Note: We are doing this here to be able to draw the highlight for 2527 * virtual views in addition to real ones. 2528 * 2529 * @param canvas The canvas on which to draw. 2530 */ 2531 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2532 if (!mAttachInfo.mHasWindowFocus) { 2533 return; 2534 } 2535 2536 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2537 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2538 return; 2539 } 2540 2541 final View host = mAccessibilityFocusedHost; 2542 if (host == null || host.mAttachInfo == null) { 2543 return; 2544 } 2545 2546 final Drawable drawable = getAccessibilityFocusedDrawable(); 2547 if (drawable == null) { 2548 return; 2549 } 2550 2551 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2552 final Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2553 if (provider == null) { 2554 host.getBoundsOnScreen(bounds); 2555 } else if (mAccessibilityFocusedVirtualView != null) { 2556 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2557 } else { 2558 return; 2559 } 2560 2561 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2562 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2563 drawable.setBounds(bounds); 2564 drawable.draw(canvas); 2565 } 2566 2567 private Drawable getAccessibilityFocusedDrawable() { 2568 if (mAttachInfo != null) { 2569 // Lazily load the accessibility focus drawable. 2570 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2571 TypedValue value = new TypedValue(); 2572 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2573 R.attr.accessibilityFocusedDrawable, value, true); 2574 if (resolved) { 2575 mAttachInfo.mAccessibilityFocusDrawable = 2576 mView.mContext.getDrawable(value.resourceId); 2577 } 2578 } 2579 return mAttachInfo.mAccessibilityFocusDrawable; 2580 } 2581 return null; 2582 } 2583 2584 void invalidateDisplayLists() { 2585 final ArrayList<DisplayList> displayLists = mDisplayLists; 2586 final int count = displayLists.size(); 2587 2588 for (int i = 0; i < count; i++) { 2589 final DisplayList displayList = displayLists.get(i); 2590 if (displayList.isDirty()) { 2591 displayList.reset(); 2592 } 2593 } 2594 2595 displayLists.clear(); 2596 } 2597 2598 /** 2599 * @hide 2600 */ 2601 public void setDrawDuringWindowsAnimating(boolean value) { 2602 mDrawDuringWindowsAnimating = value; 2603 if (value) { 2604 handleDispatchDoneAnimating(); 2605 } 2606 } 2607 2608 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2609 final View.AttachInfo attachInfo = mAttachInfo; 2610 final Rect ci = attachInfo.mContentInsets; 2611 final Rect vi = attachInfo.mVisibleInsets; 2612 int scrollY = 0; 2613 boolean handled = false; 2614 2615 if (vi.left > ci.left || vi.top > ci.top 2616 || vi.right > ci.right || vi.bottom > ci.bottom) { 2617 // We'll assume that we aren't going to change the scroll 2618 // offset, since we want to avoid that unless it is actually 2619 // going to make the focus visible... otherwise we scroll 2620 // all over the place. 2621 scrollY = mScrollY; 2622 // We can be called for two different situations: during a draw, 2623 // to update the scroll position if the focus has changed (in which 2624 // case 'rectangle' is null), or in response to a 2625 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2626 // is non-null and we just want to scroll to whatever that 2627 // rectangle is). 2628 final View focus = mView.findFocus(); 2629 if (focus == null) { 2630 return false; 2631 } 2632 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2633 if (focus != lastScrolledFocus) { 2634 // If the focus has changed, then ignore any requests to scroll 2635 // to a rectangle; first we want to make sure the entire focus 2636 // view is visible. 2637 rectangle = null; 2638 } 2639 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2640 + " rectangle=" + rectangle + " ci=" + ci 2641 + " vi=" + vi); 2642 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2643 // Optimization: if the focus hasn't changed since last 2644 // time, and no layout has happened, then just leave things 2645 // as they are. 2646 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2647 + mScrollY + " vi=" + vi.toShortString()); 2648 } else { 2649 // We need to determine if the currently focused view is 2650 // within the visible part of the window and, if not, apply 2651 // a pan so it can be seen. 2652 mLastScrolledFocus = new WeakReference<View>(focus); 2653 mScrollMayChange = false; 2654 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2655 // Try to find the rectangle from the focus view. 2656 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2657 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2658 + mView.getWidth() + " h=" + mView.getHeight() 2659 + " ci=" + ci.toShortString() 2660 + " vi=" + vi.toShortString()); 2661 if (rectangle == null) { 2662 focus.getFocusedRect(mTempRect); 2663 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2664 + ": focusRect=" + mTempRect.toShortString()); 2665 if (mView instanceof ViewGroup) { 2666 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2667 focus, mTempRect); 2668 } 2669 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2670 "Focus in window: focusRect=" 2671 + mTempRect.toShortString() 2672 + " visRect=" + mVisRect.toShortString()); 2673 } else { 2674 mTempRect.set(rectangle); 2675 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2676 "Request scroll to rect: " 2677 + mTempRect.toShortString() 2678 + " visRect=" + mVisRect.toShortString()); 2679 } 2680 if (mTempRect.intersect(mVisRect)) { 2681 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2682 "Focus window visible rect: " 2683 + mTempRect.toShortString()); 2684 if (mTempRect.height() > 2685 (mView.getHeight()-vi.top-vi.bottom)) { 2686 // If the focus simply is not going to fit, then 2687 // best is probably just to leave things as-is. 2688 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2689 "Too tall; leaving scrollY=" + scrollY); 2690 } else if ((mTempRect.top-scrollY) < vi.top) { 2691 scrollY -= vi.top - (mTempRect.top-scrollY); 2692 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2693 "Top covered; scrollY=" + scrollY); 2694 } else if ((mTempRect.bottom-scrollY) 2695 > (mView.getHeight()-vi.bottom)) { 2696 scrollY += (mTempRect.bottom-scrollY) 2697 - (mView.getHeight()-vi.bottom); 2698 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2699 "Bottom covered; scrollY=" + scrollY); 2700 } 2701 handled = true; 2702 } 2703 } 2704 } 2705 } 2706 2707 if (scrollY != mScrollY) { 2708 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2709 + mScrollY + " , new=" + scrollY); 2710 if (!immediate && mResizeBuffer == null) { 2711 if (mScroller == null) { 2712 mScroller = new Scroller(mView.getContext()); 2713 } 2714 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2715 } else if (mScroller != null) { 2716 mScroller.abortAnimation(); 2717 } 2718 mScrollY = scrollY; 2719 } 2720 2721 return handled; 2722 } 2723 2724 /** 2725 * @hide 2726 */ 2727 public View getAccessibilityFocusedHost() { 2728 return mAccessibilityFocusedHost; 2729 } 2730 2731 /** 2732 * @hide 2733 */ 2734 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2735 return mAccessibilityFocusedVirtualView; 2736 } 2737 2738 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2739 // If we have a virtual view with accessibility focus we need 2740 // to clear the focus and invalidate the virtual view bounds. 2741 if (mAccessibilityFocusedVirtualView != null) { 2742 2743 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2744 View focusHost = mAccessibilityFocusedHost; 2745 2746 // Wipe the state of the current accessibility focus since 2747 // the call into the provider to clear accessibility focus 2748 // will fire an accessibility event which will end up calling 2749 // this method and we want to have clean state when this 2750 // invocation happens. 2751 mAccessibilityFocusedHost = null; 2752 mAccessibilityFocusedVirtualView = null; 2753 2754 // Clear accessibility focus on the host after clearing state since 2755 // this method may be reentrant. 2756 focusHost.clearAccessibilityFocusNoCallbacks(); 2757 2758 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2759 if (provider != null) { 2760 // Invalidate the area of the cleared accessibility focus. 2761 focusNode.getBoundsInParent(mTempRect); 2762 focusHost.invalidate(mTempRect); 2763 // Clear accessibility focus in the virtual node. 2764 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2765 focusNode.getSourceNodeId()); 2766 provider.performAction(virtualNodeId, 2767 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2768 } 2769 focusNode.recycle(); 2770 } 2771 if (mAccessibilityFocusedHost != null) { 2772 // Clear accessibility focus in the view. 2773 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2774 } 2775 2776 // Set the new focus host and node. 2777 mAccessibilityFocusedHost = view; 2778 mAccessibilityFocusedVirtualView = node; 2779 } 2780 2781 @Override 2782 public void requestChildFocus(View child, View focused) { 2783 if (DEBUG_INPUT_RESIZE) { 2784 Log.v(TAG, "Request child focus: focus now " + focused); 2785 } 2786 checkThread(); 2787 scheduleTraversals(); 2788 } 2789 2790 @Override 2791 public void clearChildFocus(View child) { 2792 if (DEBUG_INPUT_RESIZE) { 2793 Log.v(TAG, "Clearing child focus"); 2794 } 2795 checkThread(); 2796 scheduleTraversals(); 2797 } 2798 2799 @Override 2800 public ViewParent getParentForAccessibility() { 2801 return null; 2802 } 2803 2804 @Override 2805 public void focusableViewAvailable(View v) { 2806 checkThread(); 2807 if (mView != null) { 2808 if (!mView.hasFocus()) { 2809 v.requestFocus(); 2810 } else { 2811 // the one case where will transfer focus away from the current one 2812 // is if the current view is a view group that prefers to give focus 2813 // to its children first AND the view is a descendant of it. 2814 View focused = mView.findFocus(); 2815 if (focused instanceof ViewGroup) { 2816 ViewGroup group = (ViewGroup) focused; 2817 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2818 && isViewDescendantOf(v, focused)) { 2819 v.requestFocus(); 2820 } 2821 } 2822 } 2823 } 2824 } 2825 2826 @Override 2827 public void recomputeViewAttributes(View child) { 2828 checkThread(); 2829 if (mView == child) { 2830 mAttachInfo.mRecomputeGlobalAttributes = true; 2831 if (!mWillDrawSoon) { 2832 scheduleTraversals(); 2833 } 2834 } 2835 } 2836 2837 void dispatchDetachedFromWindow() { 2838 if (mView != null && mView.mAttachInfo != null) { 2839 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2840 mView.dispatchDetachedFromWindow(); 2841 } 2842 2843 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2844 mAccessibilityManager.removeAccessibilityStateChangeListener( 2845 mAccessibilityInteractionConnectionManager); 2846 removeSendWindowContentChangedCallback(); 2847 2848 destroyHardwareRenderer(); 2849 2850 setAccessibilityFocus(null, null); 2851 2852 mView.assignParent(null); 2853 mView = null; 2854 mAttachInfo.mRootView = null; 2855 2856 mSurface.release(); 2857 2858 if (mInputQueueCallback != null && mInputQueue != null) { 2859 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2860 mInputQueue.dispose(); 2861 mInputQueueCallback = null; 2862 mInputQueue = null; 2863 } 2864 if (mInputEventReceiver != null) { 2865 mInputEventReceiver.dispose(); 2866 mInputEventReceiver = null; 2867 } 2868 try { 2869 mWindowSession.remove(mWindow); 2870 } catch (RemoteException e) { 2871 } 2872 2873 // Dispose the input channel after removing the window so the Window Manager 2874 // doesn't interpret the input channel being closed as an abnormal termination. 2875 if (mInputChannel != null) { 2876 mInputChannel.dispose(); 2877 mInputChannel = null; 2878 } 2879 2880 unscheduleTraversals(); 2881 } 2882 2883 void updateConfiguration(Configuration config, boolean force) { 2884 if (DEBUG_CONFIGURATION) Log.v(TAG, 2885 "Applying new config to window " 2886 + mWindowAttributes.getTitle() 2887 + ": " + config); 2888 2889 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2890 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2891 config = new Configuration(config); 2892 ci.applyToConfiguration(mNoncompatDensity, config); 2893 } 2894 2895 synchronized (sConfigCallbacks) { 2896 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2897 sConfigCallbacks.get(i).onConfigurationChanged(config); 2898 } 2899 } 2900 if (mView != null) { 2901 // At this point the resources have been updated to 2902 // have the most recent config, whatever that is. Use 2903 // the one in them which may be newer. 2904 config = mView.getResources().getConfiguration(); 2905 if (force || mLastConfiguration.diff(config) != 0) { 2906 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2907 final int currentLayoutDirection = config.getLayoutDirection(); 2908 mLastConfiguration.setTo(config); 2909 if (lastLayoutDirection != currentLayoutDirection && 2910 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2911 mView.setLayoutDirection(currentLayoutDirection); 2912 } 2913 mView.dispatchConfigurationChanged(config); 2914 } 2915 } 2916 } 2917 2918 /** 2919 * Return true if child is an ancestor of parent, (or equal to the parent). 2920 */ 2921 public static boolean isViewDescendantOf(View child, View parent) { 2922 if (child == parent) { 2923 return true; 2924 } 2925 2926 final ViewParent theParent = child.getParent(); 2927 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2928 } 2929 2930 private static void forceLayout(View view) { 2931 view.forceLayout(); 2932 if (view instanceof ViewGroup) { 2933 ViewGroup group = (ViewGroup) view; 2934 final int count = group.getChildCount(); 2935 for (int i = 0; i < count; i++) { 2936 forceLayout(group.getChildAt(i)); 2937 } 2938 } 2939 } 2940 2941 private final static int MSG_INVALIDATE = 1; 2942 private final static int MSG_INVALIDATE_RECT = 2; 2943 private final static int MSG_DIE = 3; 2944 private final static int MSG_RESIZED = 4; 2945 private final static int MSG_RESIZED_REPORT = 5; 2946 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2947 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 2948 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2949 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2950 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2951 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2952 private final static int MSG_CHECK_FOCUS = 13; 2953 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2954 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2955 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2956 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2957 private final static int MSG_UPDATE_CONFIGURATION = 18; 2958 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2959 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2960 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2961 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2962 private final static int MSG_INVALIDATE_WORLD = 23; 2963 private final static int MSG_WINDOW_MOVED = 24; 2964 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2965 2966 final class ViewRootHandler extends Handler { 2967 @Override 2968 public String getMessageName(Message message) { 2969 switch (message.what) { 2970 case MSG_INVALIDATE: 2971 return "MSG_INVALIDATE"; 2972 case MSG_INVALIDATE_RECT: 2973 return "MSG_INVALIDATE_RECT"; 2974 case MSG_DIE: 2975 return "MSG_DIE"; 2976 case MSG_RESIZED: 2977 return "MSG_RESIZED"; 2978 case MSG_RESIZED_REPORT: 2979 return "MSG_RESIZED_REPORT"; 2980 case MSG_WINDOW_FOCUS_CHANGED: 2981 return "MSG_WINDOW_FOCUS_CHANGED"; 2982 case MSG_DISPATCH_INPUT_EVENT: 2983 return "MSG_DISPATCH_INPUT_EVENT"; 2984 case MSG_DISPATCH_APP_VISIBILITY: 2985 return "MSG_DISPATCH_APP_VISIBILITY"; 2986 case MSG_DISPATCH_GET_NEW_SURFACE: 2987 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2988 case MSG_DISPATCH_KEY_FROM_IME: 2989 return "MSG_DISPATCH_KEY_FROM_IME"; 2990 case MSG_FINISH_INPUT_CONNECTION: 2991 return "MSG_FINISH_INPUT_CONNECTION"; 2992 case MSG_CHECK_FOCUS: 2993 return "MSG_CHECK_FOCUS"; 2994 case MSG_CLOSE_SYSTEM_DIALOGS: 2995 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2996 case MSG_DISPATCH_DRAG_EVENT: 2997 return "MSG_DISPATCH_DRAG_EVENT"; 2998 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2999 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3000 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3001 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3002 case MSG_UPDATE_CONFIGURATION: 3003 return "MSG_UPDATE_CONFIGURATION"; 3004 case MSG_PROCESS_INPUT_EVENTS: 3005 return "MSG_PROCESS_INPUT_EVENTS"; 3006 case MSG_DISPATCH_SCREEN_STATE: 3007 return "MSG_DISPATCH_SCREEN_STATE"; 3008 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3009 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3010 case MSG_DISPATCH_DONE_ANIMATING: 3011 return "MSG_DISPATCH_DONE_ANIMATING"; 3012 case MSG_WINDOW_MOVED: 3013 return "MSG_WINDOW_MOVED"; 3014 case MSG_FLUSH_LAYER_UPDATES: 3015 return "MSG_FLUSH_LAYER_UPDATES"; 3016 } 3017 return super.getMessageName(message); 3018 } 3019 3020 @Override 3021 public void handleMessage(Message msg) { 3022 switch (msg.what) { 3023 case MSG_INVALIDATE: 3024 ((View) msg.obj).invalidate(); 3025 break; 3026 case MSG_INVALIDATE_RECT: 3027 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3028 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3029 info.recycle(); 3030 break; 3031 case MSG_PROCESS_INPUT_EVENTS: 3032 mProcessInputEventsScheduled = false; 3033 doProcessInputEvents(); 3034 break; 3035 case MSG_DISPATCH_APP_VISIBILITY: 3036 handleAppVisibility(msg.arg1 != 0); 3037 break; 3038 case MSG_DISPATCH_GET_NEW_SURFACE: 3039 handleGetNewSurface(); 3040 break; 3041 case MSG_RESIZED: { 3042 // Recycled in the fall through... 3043 SomeArgs args = (SomeArgs) msg.obj; 3044 if (mWinFrame.equals(args.arg1) 3045 && mPendingOverscanInsets.equals(args.arg5) 3046 && mPendingContentInsets.equals(args.arg2) 3047 && mPendingVisibleInsets.equals(args.arg3) 3048 && args.arg4 == null) { 3049 break; 3050 } 3051 } // fall through... 3052 case MSG_RESIZED_REPORT: 3053 if (mAdded) { 3054 SomeArgs args = (SomeArgs) msg.obj; 3055 3056 Configuration config = (Configuration) args.arg4; 3057 if (config != null) { 3058 updateConfiguration(config, false); 3059 } 3060 3061 mWinFrame.set((Rect) args.arg1); 3062 mPendingOverscanInsets.set((Rect) args.arg5); 3063 mPendingContentInsets.set((Rect) args.arg2); 3064 mPendingVisibleInsets.set((Rect) args.arg3); 3065 3066 args.recycle(); 3067 3068 if (msg.what == MSG_RESIZED_REPORT) { 3069 mReportNextDraw = true; 3070 } 3071 3072 if (mView != null) { 3073 forceLayout(mView); 3074 } 3075 3076 requestLayout(); 3077 } 3078 break; 3079 case MSG_WINDOW_MOVED: 3080 if (mAdded) { 3081 final int w = mWinFrame.width(); 3082 final int h = mWinFrame.height(); 3083 final int l = msg.arg1; 3084 final int t = msg.arg2; 3085 mWinFrame.left = l; 3086 mWinFrame.right = l + w; 3087 mWinFrame.top = t; 3088 mWinFrame.bottom = t + h; 3089 3090 if (mView != null) { 3091 forceLayout(mView); 3092 } 3093 requestLayout(); 3094 } 3095 break; 3096 case MSG_WINDOW_FOCUS_CHANGED: { 3097 if (mAdded) { 3098 boolean hasWindowFocus = msg.arg1 != 0; 3099 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3100 3101 profileRendering(hasWindowFocus); 3102 3103 if (hasWindowFocus) { 3104 boolean inTouchMode = msg.arg2 != 0; 3105 ensureTouchModeLocally(inTouchMode); 3106 3107 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3108 mFullRedrawNeeded = true; 3109 try { 3110 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3111 mWidth, mHeight, mSurface); 3112 } catch (OutOfResourcesException e) { 3113 Log.e(TAG, "OutOfResourcesException locking surface", e); 3114 try { 3115 if (!mWindowSession.outOfMemory(mWindow)) { 3116 Slog.w(TAG, "No processes killed for memory; killing self"); 3117 Process.killProcess(Process.myPid()); 3118 } 3119 } catch (RemoteException ex) { 3120 } 3121 // Retry in a bit. 3122 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3123 return; 3124 } 3125 } 3126 } 3127 3128 mLastWasImTarget = WindowManager.LayoutParams 3129 .mayUseInputMethod(mWindowAttributes.flags); 3130 3131 InputMethodManager imm = InputMethodManager.peekInstance(); 3132 if (mView != null) { 3133 if (hasWindowFocus && imm != null && mLastWasImTarget && 3134 !isInLocalFocusMode()) { 3135 imm.startGettingWindowFocus(mView); 3136 } 3137 mAttachInfo.mKeyDispatchState.reset(); 3138 mView.dispatchWindowFocusChanged(hasWindowFocus); 3139 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3140 } 3141 3142 // Note: must be done after the focus change callbacks, 3143 // so all of the view state is set up correctly. 3144 if (hasWindowFocus) { 3145 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3146 imm.onWindowFocus(mView, mView.findFocus(), 3147 mWindowAttributes.softInputMode, 3148 !mHasHadWindowFocus, mWindowAttributes.flags); 3149 } 3150 // Clear the forward bit. We can just do this directly, since 3151 // the window manager doesn't care about it. 3152 mWindowAttributes.softInputMode &= 3153 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3154 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3155 .softInputMode &= 3156 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3157 mHasHadWindowFocus = true; 3158 } 3159 3160 if (mView != null && mAccessibilityManager.isEnabled()) { 3161 if (hasWindowFocus) { 3162 mView.sendAccessibilityEvent( 3163 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3164 } 3165 } 3166 } 3167 } break; 3168 case MSG_DIE: 3169 doDie(); 3170 break; 3171 case MSG_DISPATCH_INPUT_EVENT: { 3172 InputEvent event = (InputEvent)msg.obj; 3173 enqueueInputEvent(event, null, 0, true); 3174 } break; 3175 case MSG_DISPATCH_KEY_FROM_IME: { 3176 if (LOCAL_LOGV) Log.v( 3177 TAG, "Dispatching key " 3178 + msg.obj + " from IME to " + mView); 3179 KeyEvent event = (KeyEvent)msg.obj; 3180 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3181 // The IME is trying to say this event is from the 3182 // system! Bad bad bad! 3183 //noinspection UnusedAssignment 3184 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3185 } 3186 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3187 } break; 3188 case MSG_FINISH_INPUT_CONNECTION: { 3189 InputMethodManager imm = InputMethodManager.peekInstance(); 3190 if (imm != null) { 3191 imm.reportFinishInputConnection((InputConnection)msg.obj); 3192 } 3193 } break; 3194 case MSG_CHECK_FOCUS: { 3195 InputMethodManager imm = InputMethodManager.peekInstance(); 3196 if (imm != null) { 3197 imm.checkFocus(); 3198 } 3199 } break; 3200 case MSG_CLOSE_SYSTEM_DIALOGS: { 3201 if (mView != null) { 3202 mView.onCloseSystemDialogs((String)msg.obj); 3203 } 3204 } break; 3205 case MSG_DISPATCH_DRAG_EVENT: 3206 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3207 DragEvent event = (DragEvent)msg.obj; 3208 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3209 handleDragEvent(event); 3210 } break; 3211 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3212 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3213 } break; 3214 case MSG_UPDATE_CONFIGURATION: { 3215 Configuration config = (Configuration)msg.obj; 3216 if (config.isOtherSeqNewer(mLastConfiguration)) { 3217 config = mLastConfiguration; 3218 } 3219 updateConfiguration(config, false); 3220 } break; 3221 case MSG_DISPATCH_SCREEN_STATE: { 3222 if (mView != null) { 3223 handleScreenStateChange(msg.arg1 == 1); 3224 } 3225 } break; 3226 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3227 setAccessibilityFocus(null, null); 3228 } break; 3229 case MSG_DISPATCH_DONE_ANIMATING: { 3230 handleDispatchDoneAnimating(); 3231 } break; 3232 case MSG_INVALIDATE_WORLD: { 3233 if (mView != null) { 3234 invalidateWorld(mView); 3235 } 3236 } break; 3237 case MSG_FLUSH_LAYER_UPDATES: { 3238 flushHardwareLayerUpdates(); 3239 } break; 3240 } 3241 } 3242 } 3243 3244 final ViewRootHandler mHandler = new ViewRootHandler(); 3245 3246 /** 3247 * Something in the current window tells us we need to change the touch mode. For 3248 * example, we are not in touch mode, and the user touches the screen. 3249 * 3250 * If the touch mode has changed, tell the window manager, and handle it locally. 3251 * 3252 * @param inTouchMode Whether we want to be in touch mode. 3253 * @return True if the touch mode changed and focus changed was changed as a result 3254 */ 3255 boolean ensureTouchMode(boolean inTouchMode) { 3256 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3257 + "touch mode is " + mAttachInfo.mInTouchMode); 3258 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3259 3260 // tell the window manager 3261 try { 3262 if (!isInLocalFocusMode()) { 3263 mWindowSession.setInTouchMode(inTouchMode); 3264 } 3265 } catch (RemoteException e) { 3266 throw new RuntimeException(e); 3267 } 3268 3269 // handle the change 3270 return ensureTouchModeLocally(inTouchMode); 3271 } 3272 3273 /** 3274 * Ensure that the touch mode for this window is set, and if it is changing, 3275 * take the appropriate action. 3276 * @param inTouchMode Whether we want to be in touch mode. 3277 * @return True if the touch mode changed and focus changed was changed as a result 3278 */ 3279 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3280 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3281 + "touch mode is " + mAttachInfo.mInTouchMode); 3282 3283 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3284 3285 mAttachInfo.mInTouchMode = inTouchMode; 3286 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3287 3288 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3289 } 3290 3291 private boolean enterTouchMode() { 3292 if (mView != null && mView.hasFocus()) { 3293 // note: not relying on mFocusedView here because this could 3294 // be when the window is first being added, and mFocused isn't 3295 // set yet. 3296 final View focused = mView.findFocus(); 3297 if (focused != null && !focused.isFocusableInTouchMode()) { 3298 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3299 if (ancestorToTakeFocus != null) { 3300 // there is an ancestor that wants focus after its 3301 // descendants that is focusable in touch mode.. give it 3302 // focus 3303 return ancestorToTakeFocus.requestFocus(); 3304 } else { 3305 // There's nothing to focus. Clear and propagate through the 3306 // hierarchy, but don't attempt to place new focus. 3307 focused.clearFocusInternal(null, true, false); 3308 return true; 3309 } 3310 } 3311 } 3312 return false; 3313 } 3314 3315 /** 3316 * Find an ancestor of focused that wants focus after its descendants and is 3317 * focusable in touch mode. 3318 * @param focused The currently focused view. 3319 * @return An appropriate view, or null if no such view exists. 3320 */ 3321 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3322 ViewParent parent = focused.getParent(); 3323 while (parent instanceof ViewGroup) { 3324 final ViewGroup vgParent = (ViewGroup) parent; 3325 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3326 && vgParent.isFocusableInTouchMode()) { 3327 return vgParent; 3328 } 3329 if (vgParent.isRootNamespace()) { 3330 return null; 3331 } else { 3332 parent = vgParent.getParent(); 3333 } 3334 } 3335 return null; 3336 } 3337 3338 private boolean leaveTouchMode() { 3339 if (mView != null) { 3340 if (mView.hasFocus()) { 3341 View focusedView = mView.findFocus(); 3342 if (!(focusedView instanceof ViewGroup)) { 3343 // some view has focus, let it keep it 3344 return false; 3345 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3346 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3347 // some view group has focus, and doesn't prefer its children 3348 // over itself for focus, so let them keep it. 3349 return false; 3350 } 3351 } 3352 3353 // find the best view to give focus to in this brave new non-touch-mode 3354 // world 3355 final View focused = focusSearch(null, View.FOCUS_DOWN); 3356 if (focused != null) { 3357 return focused.requestFocus(View.FOCUS_DOWN); 3358 } 3359 } 3360 return false; 3361 } 3362 3363 /** 3364 * Base class for implementing a stage in the chain of responsibility 3365 * for processing input events. 3366 * <p> 3367 * Events are delivered to the stage by the {@link #deliver} method. The stage 3368 * then has the choice of finishing the event or forwarding it to the next stage. 3369 * </p> 3370 */ 3371 abstract class InputStage { 3372 private final InputStage mNext; 3373 3374 protected static final int FORWARD = 0; 3375 protected static final int FINISH_HANDLED = 1; 3376 protected static final int FINISH_NOT_HANDLED = 2; 3377 3378 /** 3379 * Creates an input stage. 3380 * @param next The next stage to which events should be forwarded. 3381 */ 3382 public InputStage(InputStage next) { 3383 mNext = next; 3384 } 3385 3386 /** 3387 * Delivers an event to be processed. 3388 */ 3389 public final void deliver(QueuedInputEvent q) { 3390 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3391 forward(q); 3392 } else if (shouldDropInputEvent(q)) { 3393 finish(q, false); 3394 } else { 3395 apply(q, onProcess(q)); 3396 } 3397 } 3398 3399 /** 3400 * Marks the the input event as finished then forwards it to the next stage. 3401 */ 3402 protected void finish(QueuedInputEvent q, boolean handled) { 3403 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3404 if (handled) { 3405 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3406 } 3407 forward(q); 3408 } 3409 3410 /** 3411 * Forwards the event to the next stage. 3412 */ 3413 protected void forward(QueuedInputEvent q) { 3414 onDeliverToNext(q); 3415 } 3416 3417 /** 3418 * Applies a result code from {@link #onProcess} to the specified event. 3419 */ 3420 protected void apply(QueuedInputEvent q, int result) { 3421 if (result == FORWARD) { 3422 forward(q); 3423 } else if (result == FINISH_HANDLED) { 3424 finish(q, true); 3425 } else if (result == FINISH_NOT_HANDLED) { 3426 finish(q, false); 3427 } else { 3428 throw new IllegalArgumentException("Invalid result: " + result); 3429 } 3430 } 3431 3432 /** 3433 * Called when an event is ready to be processed. 3434 * @return A result code indicating how the event was handled. 3435 */ 3436 protected int onProcess(QueuedInputEvent q) { 3437 return FORWARD; 3438 } 3439 3440 /** 3441 * Called when an event is being delivered to the next stage. 3442 */ 3443 protected void onDeliverToNext(QueuedInputEvent q) { 3444 if (mNext != null) { 3445 mNext.deliver(q); 3446 } else { 3447 finishInputEvent(q); 3448 } 3449 } 3450 3451 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3452 if (mView == null || !mAdded) { 3453 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3454 return true; 3455 } else if (!mAttachInfo.mHasWindowFocus && 3456 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3457 !isTerminalInputEvent(q.mEvent)) { 3458 // If this is a focused event and the window doesn't currently have input focus, 3459 // then drop this event. This could be an event that came back from the previous 3460 // stage but the window has lost focus in the meantime. 3461 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3462 return true; 3463 } 3464 return false; 3465 } 3466 3467 void dump(String prefix, PrintWriter writer) { 3468 if (mNext != null) { 3469 mNext.dump(prefix, writer); 3470 } 3471 } 3472 } 3473 3474 /** 3475 * Base class for implementing an input pipeline stage that supports 3476 * asynchronous and out-of-order processing of input events. 3477 * <p> 3478 * In addition to what a normal input stage can do, an asynchronous 3479 * input stage may also defer an input event that has been delivered to it 3480 * and finish or forward it later. 3481 * </p> 3482 */ 3483 abstract class AsyncInputStage extends InputStage { 3484 private final String mTraceCounter; 3485 3486 private QueuedInputEvent mQueueHead; 3487 private QueuedInputEvent mQueueTail; 3488 private int mQueueLength; 3489 3490 protected static final int DEFER = 3; 3491 3492 /** 3493 * Creates an asynchronous input stage. 3494 * @param next The next stage to which events should be forwarded. 3495 * @param traceCounter The name of a counter to record the size of 3496 * the queue of pending events. 3497 */ 3498 public AsyncInputStage(InputStage next, String traceCounter) { 3499 super(next); 3500 mTraceCounter = traceCounter; 3501 } 3502 3503 /** 3504 * Marks the event as deferred, which is to say that it will be handled 3505 * asynchronously. The caller is responsible for calling {@link #forward} 3506 * or {@link #finish} later when it is done handling the event. 3507 */ 3508 protected void defer(QueuedInputEvent q) { 3509 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3510 enqueue(q); 3511 } 3512 3513 @Override 3514 protected void forward(QueuedInputEvent q) { 3515 // Clear the deferred flag. 3516 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3517 3518 // Fast path if the queue is empty. 3519 QueuedInputEvent curr = mQueueHead; 3520 if (curr == null) { 3521 super.forward(q); 3522 return; 3523 } 3524 3525 // Determine whether the event must be serialized behind any others 3526 // before it can be delivered to the next stage. This is done because 3527 // deferred events might be handled out of order by the stage. 3528 final int deviceId = q.mEvent.getDeviceId(); 3529 QueuedInputEvent prev = null; 3530 boolean blocked = false; 3531 while (curr != null && curr != q) { 3532 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3533 blocked = true; 3534 } 3535 prev = curr; 3536 curr = curr.mNext; 3537 } 3538 3539 // If the event is blocked, then leave it in the queue to be delivered later. 3540 // Note that the event might not yet be in the queue if it was not previously 3541 // deferred so we will enqueue it if needed. 3542 if (blocked) { 3543 if (curr == null) { 3544 enqueue(q); 3545 } 3546 return; 3547 } 3548 3549 // The event is not blocked. Deliver it immediately. 3550 if (curr != null) { 3551 curr = curr.mNext; 3552 dequeue(q, prev); 3553 } 3554 super.forward(q); 3555 3556 // Dequeuing this event may have unblocked successors. Deliver them. 3557 while (curr != null) { 3558 if (deviceId == curr.mEvent.getDeviceId()) { 3559 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3560 break; 3561 } 3562 QueuedInputEvent next = curr.mNext; 3563 dequeue(curr, prev); 3564 super.forward(curr); 3565 curr = next; 3566 } else { 3567 prev = curr; 3568 curr = curr.mNext; 3569 } 3570 } 3571 } 3572 3573 @Override 3574 protected void apply(QueuedInputEvent q, int result) { 3575 if (result == DEFER) { 3576 defer(q); 3577 } else { 3578 super.apply(q, result); 3579 } 3580 } 3581 3582 private void enqueue(QueuedInputEvent q) { 3583 if (mQueueTail == null) { 3584 mQueueHead = q; 3585 mQueueTail = q; 3586 } else { 3587 mQueueTail.mNext = q; 3588 mQueueTail = q; 3589 } 3590 3591 mQueueLength += 1; 3592 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3593 } 3594 3595 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3596 if (prev == null) { 3597 mQueueHead = q.mNext; 3598 } else { 3599 prev.mNext = q.mNext; 3600 } 3601 if (mQueueTail == q) { 3602 mQueueTail = prev; 3603 } 3604 q.mNext = null; 3605 3606 mQueueLength -= 1; 3607 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3608 } 3609 3610 @Override 3611 void dump(String prefix, PrintWriter writer) { 3612 writer.print(prefix); 3613 writer.print(getClass().getName()); 3614 writer.print(": mQueueLength="); 3615 writer.println(mQueueLength); 3616 3617 super.dump(prefix, writer); 3618 } 3619 } 3620 3621 /** 3622 * Delivers pre-ime input events to a native activity. 3623 * Does not support pointer events. 3624 */ 3625 final class NativePreImeInputStage extends AsyncInputStage 3626 implements InputQueue.FinishedInputEventCallback { 3627 public NativePreImeInputStage(InputStage next, String traceCounter) { 3628 super(next, traceCounter); 3629 } 3630 3631 @Override 3632 protected int onProcess(QueuedInputEvent q) { 3633 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3634 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3635 return DEFER; 3636 } 3637 return FORWARD; 3638 } 3639 3640 @Override 3641 public void onFinishedInputEvent(Object token, boolean handled) { 3642 QueuedInputEvent q = (QueuedInputEvent)token; 3643 if (handled) { 3644 finish(q, true); 3645 return; 3646 } 3647 forward(q); 3648 } 3649 } 3650 3651 /** 3652 * Delivers pre-ime input events to the view hierarchy. 3653 * Does not support pointer events. 3654 */ 3655 final class ViewPreImeInputStage extends InputStage { 3656 public ViewPreImeInputStage(InputStage next) { 3657 super(next); 3658 } 3659 3660 @Override 3661 protected int onProcess(QueuedInputEvent q) { 3662 if (q.mEvent instanceof KeyEvent) { 3663 return processKeyEvent(q); 3664 } 3665 return FORWARD; 3666 } 3667 3668 private int processKeyEvent(QueuedInputEvent q) { 3669 final KeyEvent event = (KeyEvent)q.mEvent; 3670 if (mView.dispatchKeyEventPreIme(event)) { 3671 return FINISH_HANDLED; 3672 } 3673 return FORWARD; 3674 } 3675 } 3676 3677 /** 3678 * Delivers input events to the ime. 3679 * Does not support pointer events. 3680 */ 3681 final class ImeInputStage extends AsyncInputStage 3682 implements InputMethodManager.FinishedInputEventCallback { 3683 public ImeInputStage(InputStage next, String traceCounter) { 3684 super(next, traceCounter); 3685 } 3686 3687 @Override 3688 protected int onProcess(QueuedInputEvent q) { 3689 if (mLastWasImTarget && !isInLocalFocusMode()) { 3690 InputMethodManager imm = InputMethodManager.peekInstance(); 3691 if (imm != null) { 3692 final InputEvent event = q.mEvent; 3693 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3694 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3695 if (result == InputMethodManager.DISPATCH_HANDLED) { 3696 return FINISH_HANDLED; 3697 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3698 return FINISH_NOT_HANDLED; 3699 } else { 3700 return DEFER; // callback will be invoked later 3701 } 3702 } 3703 } 3704 return FORWARD; 3705 } 3706 3707 @Override 3708 public void onFinishedInputEvent(Object token, boolean handled) { 3709 QueuedInputEvent q = (QueuedInputEvent)token; 3710 if (handled) { 3711 finish(q, true); 3712 return; 3713 } 3714 forward(q); 3715 } 3716 } 3717 3718 /** 3719 * Performs early processing of post-ime input events. 3720 */ 3721 final class EarlyPostImeInputStage extends InputStage { 3722 public EarlyPostImeInputStage(InputStage next) { 3723 super(next); 3724 } 3725 3726 @Override 3727 protected int onProcess(QueuedInputEvent q) { 3728 if (q.mEvent instanceof KeyEvent) { 3729 return processKeyEvent(q); 3730 } else { 3731 final int source = q.mEvent.getSource(); 3732 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3733 return processPointerEvent(q); 3734 } 3735 } 3736 return FORWARD; 3737 } 3738 3739 private int processKeyEvent(QueuedInputEvent q) { 3740 final KeyEvent event = (KeyEvent)q.mEvent; 3741 3742 // If the key's purpose is to exit touch mode then we consume it 3743 // and consider it handled. 3744 if (checkForLeavingTouchModeAndConsume(event)) { 3745 return FINISH_HANDLED; 3746 } 3747 3748 // Make sure the fallback event policy sees all keys that will be 3749 // delivered to the view hierarchy. 3750 mFallbackEventHandler.preDispatchKeyEvent(event); 3751 return FORWARD; 3752 } 3753 3754 private int processPointerEvent(QueuedInputEvent q) { 3755 final MotionEvent event = (MotionEvent)q.mEvent; 3756 3757 // Translate the pointer event for compatibility, if needed. 3758 if (mTranslator != null) { 3759 mTranslator.translateEventInScreenToAppWindow(event); 3760 } 3761 3762 // Enter touch mode on down or scroll. 3763 final int action = event.getAction(); 3764 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3765 ensureTouchMode(true); 3766 } 3767 3768 // Offset the scroll position. 3769 if (mCurScrollY != 0) { 3770 event.offsetLocation(0, mCurScrollY); 3771 } 3772 3773 // Remember the touch position for possible drag-initiation. 3774 if (event.isTouchEvent()) { 3775 mLastTouchPoint.x = event.getRawX(); 3776 mLastTouchPoint.y = event.getRawY(); 3777 } 3778 return FORWARD; 3779 } 3780 } 3781 3782 /** 3783 * Delivers post-ime input events to a native activity. 3784 */ 3785 final class NativePostImeInputStage extends AsyncInputStage 3786 implements InputQueue.FinishedInputEventCallback { 3787 public NativePostImeInputStage(InputStage next, String traceCounter) { 3788 super(next, traceCounter); 3789 } 3790 3791 @Override 3792 protected int onProcess(QueuedInputEvent q) { 3793 if (mInputQueue != null) { 3794 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3795 return DEFER; 3796 } 3797 return FORWARD; 3798 } 3799 3800 @Override 3801 public void onFinishedInputEvent(Object token, boolean handled) { 3802 QueuedInputEvent q = (QueuedInputEvent)token; 3803 if (handled) { 3804 finish(q, true); 3805 return; 3806 } 3807 forward(q); 3808 } 3809 } 3810 3811 /** 3812 * Delivers post-ime input events to the view hierarchy. 3813 */ 3814 final class ViewPostImeInputStage extends InputStage { 3815 public ViewPostImeInputStage(InputStage next) { 3816 super(next); 3817 } 3818 3819 @Override 3820 protected int onProcess(QueuedInputEvent q) { 3821 if (q.mEvent instanceof KeyEvent) { 3822 return processKeyEvent(q); 3823 } else { 3824 // If delivering a new non-key event, make sure the window is 3825 // now allowed to start updating. 3826 handleDispatchDoneAnimating(); 3827 final int source = q.mEvent.getSource(); 3828 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3829 return processPointerEvent(q); 3830 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3831 return processTrackballEvent(q); 3832 } else { 3833 return processGenericMotionEvent(q); 3834 } 3835 } 3836 } 3837 3838 private int processKeyEvent(QueuedInputEvent q) { 3839 final KeyEvent event = (KeyEvent)q.mEvent; 3840 3841 if (event.getAction() != KeyEvent.ACTION_UP) { 3842 // If delivering a new key event, make sure the window is 3843 // now allowed to start updating. 3844 handleDispatchDoneAnimating(); 3845 } 3846 3847 // Deliver the key to the view hierarchy. 3848 if (mView.dispatchKeyEvent(event)) { 3849 return FINISH_HANDLED; 3850 } 3851 3852 if (shouldDropInputEvent(q)) { 3853 return FINISH_NOT_HANDLED; 3854 } 3855 3856 // If the Control modifier is held, try to interpret the key as a shortcut. 3857 if (event.getAction() == KeyEvent.ACTION_DOWN 3858 && event.isCtrlPressed() 3859 && event.getRepeatCount() == 0 3860 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3861 if (mView.dispatchKeyShortcutEvent(event)) { 3862 return FINISH_HANDLED; 3863 } 3864 if (shouldDropInputEvent(q)) { 3865 return FINISH_NOT_HANDLED; 3866 } 3867 } 3868 3869 // Apply the fallback event policy. 3870 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3871 return FINISH_HANDLED; 3872 } 3873 if (shouldDropInputEvent(q)) { 3874 return FINISH_NOT_HANDLED; 3875 } 3876 3877 // Handle automatic focus changes. 3878 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3879 int direction = 0; 3880 switch (event.getKeyCode()) { 3881 case KeyEvent.KEYCODE_DPAD_LEFT: 3882 if (event.hasNoModifiers()) { 3883 direction = View.FOCUS_LEFT; 3884 } 3885 break; 3886 case KeyEvent.KEYCODE_DPAD_RIGHT: 3887 if (event.hasNoModifiers()) { 3888 direction = View.FOCUS_RIGHT; 3889 } 3890 break; 3891 case KeyEvent.KEYCODE_DPAD_UP: 3892 if (event.hasNoModifiers()) { 3893 direction = View.FOCUS_UP; 3894 } 3895 break; 3896 case KeyEvent.KEYCODE_DPAD_DOWN: 3897 if (event.hasNoModifiers()) { 3898 direction = View.FOCUS_DOWN; 3899 } 3900 break; 3901 case KeyEvent.KEYCODE_TAB: 3902 if (event.hasNoModifiers()) { 3903 direction = View.FOCUS_FORWARD; 3904 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3905 direction = View.FOCUS_BACKWARD; 3906 } 3907 break; 3908 } 3909 if (direction != 0) { 3910 View focused = mView.findFocus(); 3911 if (focused != null) { 3912 View v = focused.focusSearch(direction); 3913 if (v != null && v != focused) { 3914 // do the math the get the interesting rect 3915 // of previous focused into the coord system of 3916 // newly focused view 3917 focused.getFocusedRect(mTempRect); 3918 if (mView instanceof ViewGroup) { 3919 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3920 focused, mTempRect); 3921 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3922 v, mTempRect); 3923 } 3924 if (v.requestFocus(direction, mTempRect)) { 3925 playSoundEffect(SoundEffectConstants 3926 .getContantForFocusDirection(direction)); 3927 return FINISH_HANDLED; 3928 } 3929 } 3930 3931 // Give the focused view a last chance to handle the dpad key. 3932 if (mView.dispatchUnhandledMove(focused, direction)) { 3933 return FINISH_HANDLED; 3934 } 3935 } else { 3936 // find the best view to give focus to in this non-touch-mode with no-focus 3937 View v = focusSearch(null, direction); 3938 if (v != null && v.requestFocus(direction)) { 3939 return FINISH_HANDLED; 3940 } 3941 } 3942 } 3943 } 3944 return FORWARD; 3945 } 3946 3947 private int processPointerEvent(QueuedInputEvent q) { 3948 final MotionEvent event = (MotionEvent)q.mEvent; 3949 3950 if (mView.dispatchPointerEvent(event)) { 3951 return FINISH_HANDLED; 3952 } 3953 return FORWARD; 3954 } 3955 3956 private int processTrackballEvent(QueuedInputEvent q) { 3957 final MotionEvent event = (MotionEvent)q.mEvent; 3958 3959 if (mView.dispatchTrackballEvent(event)) { 3960 return FINISH_HANDLED; 3961 } 3962 return FORWARD; 3963 } 3964 3965 private int processGenericMotionEvent(QueuedInputEvent q) { 3966 final MotionEvent event = (MotionEvent)q.mEvent; 3967 3968 // Deliver the event to the view. 3969 if (mView.dispatchGenericMotionEvent(event)) { 3970 return FINISH_HANDLED; 3971 } 3972 return FORWARD; 3973 } 3974 } 3975 3976 /** 3977 * Performs synthesis of new input events from unhandled input events. 3978 */ 3979 final class SyntheticInputStage extends InputStage { 3980 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3981 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3982 private final SyntheticTouchNavigationHandler mTouchNavigation = 3983 new SyntheticTouchNavigationHandler(); 3984 3985 public SyntheticInputStage() { 3986 super(null); 3987 } 3988 3989 @Override 3990 protected int onProcess(QueuedInputEvent q) { 3991 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3992 if (q.mEvent instanceof MotionEvent) { 3993 final MotionEvent event = (MotionEvent)q.mEvent; 3994 final int source = event.getSource(); 3995 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3996 mTrackball.process(event); 3997 return FINISH_HANDLED; 3998 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3999 mJoystick.process(event); 4000 return FINISH_HANDLED; 4001 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4002 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4003 mTouchNavigation.process(event); 4004 return FINISH_HANDLED; 4005 } 4006 } 4007 return FORWARD; 4008 } 4009 4010 @Override 4011 protected void onDeliverToNext(QueuedInputEvent q) { 4012 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4013 // Cancel related synthetic events if any prior stage has handled the event. 4014 if (q.mEvent instanceof MotionEvent) { 4015 final MotionEvent event = (MotionEvent)q.mEvent; 4016 final int source = event.getSource(); 4017 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4018 mTrackball.cancel(event); 4019 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4020 mJoystick.cancel(event); 4021 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4022 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4023 mTouchNavigation.cancel(event); 4024 } 4025 } 4026 } 4027 super.onDeliverToNext(q); 4028 } 4029 } 4030 4031 /** 4032 * Creates dpad events from unhandled trackball movements. 4033 */ 4034 final class SyntheticTrackballHandler { 4035 private final TrackballAxis mX = new TrackballAxis(); 4036 private final TrackballAxis mY = new TrackballAxis(); 4037 private long mLastTime; 4038 4039 public void process(MotionEvent event) { 4040 // Translate the trackball event into DPAD keys and try to deliver those. 4041 long curTime = SystemClock.uptimeMillis(); 4042 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4043 // It has been too long since the last movement, 4044 // so restart at the beginning. 4045 mX.reset(0); 4046 mY.reset(0); 4047 mLastTime = curTime; 4048 } 4049 4050 final int action = event.getAction(); 4051 final int metaState = event.getMetaState(); 4052 switch (action) { 4053 case MotionEvent.ACTION_DOWN: 4054 mX.reset(2); 4055 mY.reset(2); 4056 enqueueInputEvent(new KeyEvent(curTime, curTime, 4057 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4058 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4059 InputDevice.SOURCE_KEYBOARD)); 4060 break; 4061 case MotionEvent.ACTION_UP: 4062 mX.reset(2); 4063 mY.reset(2); 4064 enqueueInputEvent(new KeyEvent(curTime, curTime, 4065 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4066 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4067 InputDevice.SOURCE_KEYBOARD)); 4068 break; 4069 } 4070 4071 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4072 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4073 + " move=" + event.getX() 4074 + " / Y=" + mY.position + " step=" 4075 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4076 + " move=" + event.getY()); 4077 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4078 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4079 4080 // Generate DPAD events based on the trackball movement. 4081 // We pick the axis that has moved the most as the direction of 4082 // the DPAD. When we generate DPAD events for one axis, then the 4083 // other axis is reset -- we don't want to perform DPAD jumps due 4084 // to slight movements in the trackball when making major movements 4085 // along the other axis. 4086 int keycode = 0; 4087 int movement = 0; 4088 float accel = 1; 4089 if (xOff > yOff) { 4090 movement = mX.generate(); 4091 if (movement != 0) { 4092 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4093 : KeyEvent.KEYCODE_DPAD_LEFT; 4094 accel = mX.acceleration; 4095 mY.reset(2); 4096 } 4097 } else if (yOff > 0) { 4098 movement = mY.generate(); 4099 if (movement != 0) { 4100 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4101 : KeyEvent.KEYCODE_DPAD_UP; 4102 accel = mY.acceleration; 4103 mX.reset(2); 4104 } 4105 } 4106 4107 if (keycode != 0) { 4108 if (movement < 0) movement = -movement; 4109 int accelMovement = (int)(movement * accel); 4110 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4111 + " accelMovement=" + accelMovement 4112 + " accel=" + accel); 4113 if (accelMovement > movement) { 4114 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4115 + keycode); 4116 movement--; 4117 int repeatCount = accelMovement - movement; 4118 enqueueInputEvent(new KeyEvent(curTime, curTime, 4119 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4120 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4121 InputDevice.SOURCE_KEYBOARD)); 4122 } 4123 while (movement > 0) { 4124 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4125 + keycode); 4126 movement--; 4127 curTime = SystemClock.uptimeMillis(); 4128 enqueueInputEvent(new KeyEvent(curTime, curTime, 4129 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4130 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4131 InputDevice.SOURCE_KEYBOARD)); 4132 enqueueInputEvent(new KeyEvent(curTime, curTime, 4133 KeyEvent.ACTION_UP, keycode, 0, metaState, 4134 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4135 InputDevice.SOURCE_KEYBOARD)); 4136 } 4137 mLastTime = curTime; 4138 } 4139 } 4140 4141 public void cancel(MotionEvent event) { 4142 mLastTime = Integer.MIN_VALUE; 4143 4144 // If we reach this, we consumed a trackball event. 4145 // Because we will not translate the trackball event into a key event, 4146 // touch mode will not exit, so we exit touch mode here. 4147 if (mView != null && mAdded) { 4148 ensureTouchMode(false); 4149 } 4150 } 4151 } 4152 4153 /** 4154 * Maintains state information for a single trackball axis, generating 4155 * discrete (DPAD) movements based on raw trackball motion. 4156 */ 4157 static final class TrackballAxis { 4158 /** 4159 * The maximum amount of acceleration we will apply. 4160 */ 4161 static final float MAX_ACCELERATION = 20; 4162 4163 /** 4164 * The maximum amount of time (in milliseconds) between events in order 4165 * for us to consider the user to be doing fast trackball movements, 4166 * and thus apply an acceleration. 4167 */ 4168 static final long FAST_MOVE_TIME = 150; 4169 4170 /** 4171 * Scaling factor to the time (in milliseconds) between events to how 4172 * much to multiple/divide the current acceleration. When movement 4173 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4174 * FAST_MOVE_TIME it divides it. 4175 */ 4176 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4177 4178 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4179 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4180 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4181 4182 float position; 4183 float acceleration = 1; 4184 long lastMoveTime = 0; 4185 int step; 4186 int dir; 4187 int nonAccelMovement; 4188 4189 void reset(int _step) { 4190 position = 0; 4191 acceleration = 1; 4192 lastMoveTime = 0; 4193 step = _step; 4194 dir = 0; 4195 } 4196 4197 /** 4198 * Add trackball movement into the state. If the direction of movement 4199 * has been reversed, the state is reset before adding the 4200 * movement (so that you don't have to compensate for any previously 4201 * collected movement before see the result of the movement in the 4202 * new direction). 4203 * 4204 * @return Returns the absolute value of the amount of movement 4205 * collected so far. 4206 */ 4207 float collect(float off, long time, String axis) { 4208 long normTime; 4209 if (off > 0) { 4210 normTime = (long)(off * FAST_MOVE_TIME); 4211 if (dir < 0) { 4212 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4213 position = 0; 4214 step = 0; 4215 acceleration = 1; 4216 lastMoveTime = 0; 4217 } 4218 dir = 1; 4219 } else if (off < 0) { 4220 normTime = (long)((-off) * FAST_MOVE_TIME); 4221 if (dir > 0) { 4222 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4223 position = 0; 4224 step = 0; 4225 acceleration = 1; 4226 lastMoveTime = 0; 4227 } 4228 dir = -1; 4229 } else { 4230 normTime = 0; 4231 } 4232 4233 // The number of milliseconds between each movement that is 4234 // considered "normal" and will not result in any acceleration 4235 // or deceleration, scaled by the offset we have here. 4236 if (normTime > 0) { 4237 long delta = time - lastMoveTime; 4238 lastMoveTime = time; 4239 float acc = acceleration; 4240 if (delta < normTime) { 4241 // The user is scrolling rapidly, so increase acceleration. 4242 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4243 if (scale > 1) acc *= scale; 4244 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4245 + off + " normTime=" + normTime + " delta=" + delta 4246 + " scale=" + scale + " acc=" + acc); 4247 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4248 } else { 4249 // The user is scrolling slowly, so decrease acceleration. 4250 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4251 if (scale > 1) acc /= scale; 4252 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4253 + off + " normTime=" + normTime + " delta=" + delta 4254 + " scale=" + scale + " acc=" + acc); 4255 acceleration = acc > 1 ? acc : 1; 4256 } 4257 } 4258 position += off; 4259 return Math.abs(position); 4260 } 4261 4262 /** 4263 * Generate the number of discrete movement events appropriate for 4264 * the currently collected trackball movement. 4265 * 4266 * @return Returns the number of discrete movements, either positive 4267 * or negative, or 0 if there is not enough trackball movement yet 4268 * for a discrete movement. 4269 */ 4270 int generate() { 4271 int movement = 0; 4272 nonAccelMovement = 0; 4273 do { 4274 final int dir = position >= 0 ? 1 : -1; 4275 switch (step) { 4276 // If we are going to execute the first step, then we want 4277 // to do this as soon as possible instead of waiting for 4278 // a full movement, in order to make things look responsive. 4279 case 0: 4280 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4281 return movement; 4282 } 4283 movement += dir; 4284 nonAccelMovement += dir; 4285 step = 1; 4286 break; 4287 // If we have generated the first movement, then we need 4288 // to wait for the second complete trackball motion before 4289 // generating the second discrete movement. 4290 case 1: 4291 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4292 return movement; 4293 } 4294 movement += dir; 4295 nonAccelMovement += dir; 4296 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4297 step = 2; 4298 break; 4299 // After the first two, we generate discrete movements 4300 // consistently with the trackball, applying an acceleration 4301 // if the trackball is moving quickly. This is a simple 4302 // acceleration on top of what we already compute based 4303 // on how quickly the wheel is being turned, to apply 4304 // a longer increasing acceleration to continuous movement 4305 // in one direction. 4306 default: 4307 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4308 return movement; 4309 } 4310 movement += dir; 4311 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4312 float acc = acceleration; 4313 acc *= 1.1f; 4314 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4315 break; 4316 } 4317 } while (true); 4318 } 4319 } 4320 4321 /** 4322 * Creates dpad events from unhandled joystick movements. 4323 */ 4324 final class SyntheticJoystickHandler extends Handler { 4325 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4326 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4327 4328 private int mLastXDirection; 4329 private int mLastYDirection; 4330 private int mLastXKeyCode; 4331 private int mLastYKeyCode; 4332 4333 public SyntheticJoystickHandler() { 4334 super(true); 4335 } 4336 4337 @Override 4338 public void handleMessage(Message msg) { 4339 switch (msg.what) { 4340 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4341 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4342 KeyEvent oldEvent = (KeyEvent)msg.obj; 4343 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4344 SystemClock.uptimeMillis(), 4345 oldEvent.getRepeatCount() + 1); 4346 if (mAttachInfo.mHasWindowFocus) { 4347 enqueueInputEvent(e); 4348 Message m = obtainMessage(msg.what, e); 4349 m.setAsynchronous(true); 4350 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4351 } 4352 } break; 4353 } 4354 } 4355 4356 public void process(MotionEvent event) { 4357 update(event, true); 4358 } 4359 4360 public void cancel(MotionEvent event) { 4361 update(event, false); 4362 } 4363 4364 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4365 final long time = event.getEventTime(); 4366 final int metaState = event.getMetaState(); 4367 final int deviceId = event.getDeviceId(); 4368 final int source = event.getSource(); 4369 4370 int xDirection = joystickAxisValueToDirection( 4371 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4372 if (xDirection == 0) { 4373 xDirection = joystickAxisValueToDirection(event.getX()); 4374 } 4375 4376 int yDirection = joystickAxisValueToDirection( 4377 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4378 if (yDirection == 0) { 4379 yDirection = joystickAxisValueToDirection(event.getY()); 4380 } 4381 4382 if (xDirection != mLastXDirection) { 4383 if (mLastXKeyCode != 0) { 4384 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4385 enqueueInputEvent(new KeyEvent(time, time, 4386 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4387 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4388 mLastXKeyCode = 0; 4389 } 4390 4391 mLastXDirection = xDirection; 4392 4393 if (xDirection != 0 && synthesizeNewKeys) { 4394 mLastXKeyCode = xDirection > 0 4395 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4396 final KeyEvent e = new KeyEvent(time, time, 4397 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4398 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4399 enqueueInputEvent(e); 4400 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4401 m.setAsynchronous(true); 4402 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4403 } 4404 } 4405 4406 if (yDirection != mLastYDirection) { 4407 if (mLastYKeyCode != 0) { 4408 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4409 enqueueInputEvent(new KeyEvent(time, time, 4410 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4411 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4412 mLastYKeyCode = 0; 4413 } 4414 4415 mLastYDirection = yDirection; 4416 4417 if (yDirection != 0 && synthesizeNewKeys) { 4418 mLastYKeyCode = yDirection > 0 4419 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4420 final KeyEvent e = new KeyEvent(time, time, 4421 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4422 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4423 enqueueInputEvent(e); 4424 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4425 m.setAsynchronous(true); 4426 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4427 } 4428 } 4429 } 4430 4431 private int joystickAxisValueToDirection(float value) { 4432 if (value >= 0.5f) { 4433 return 1; 4434 } else if (value <= -0.5f) { 4435 return -1; 4436 } else { 4437 return 0; 4438 } 4439 } 4440 } 4441 4442 /** 4443 * Creates dpad events from unhandled touch navigation movements. 4444 */ 4445 final class SyntheticTouchNavigationHandler extends Handler { 4446 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4447 private static final boolean LOCAL_DEBUG = false; 4448 4449 // Assumed nominal width and height in millimeters of a touch navigation pad, 4450 // if no resolution information is available from the input system. 4451 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4452 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4453 4454 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4455 4456 // The nominal distance traveled to move by one unit. 4457 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4458 4459 // Minimum and maximum fling velocity in ticks per second. 4460 // The minimum velocity should be set such that we perform enough ticks per 4461 // second that the fling appears to be fluid. For example, if we set the minimum 4462 // to 2 ticks per second, then there may be up to half a second delay between the next 4463 // to last and last ticks which is noticeably discrete and jerky. This value should 4464 // probably not be set to anything less than about 4. 4465 // If fling accuracy is a problem then consider tuning the tick distance instead. 4466 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4467 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4468 4469 // Fling velocity decay factor applied after each new key is emitted. 4470 // This parameter controls the deceleration and overall duration of the fling. 4471 // The fling stops automatically when its velocity drops below the minimum 4472 // fling velocity defined above. 4473 private static final float FLING_TICK_DECAY = 0.8f; 4474 4475 /* The input device that we are tracking. */ 4476 4477 private int mCurrentDeviceId = -1; 4478 private int mCurrentSource; 4479 private boolean mCurrentDeviceSupported; 4480 4481 /* Configuration for the current input device. */ 4482 4483 // The scaled tick distance. A movement of this amount should generally translate 4484 // into a single dpad event in a given direction. 4485 private float mConfigTickDistance; 4486 4487 // The minimum and maximum scaled fling velocity. 4488 private float mConfigMinFlingVelocity; 4489 private float mConfigMaxFlingVelocity; 4490 4491 /* Tracking state. */ 4492 4493 // The velocity tracker for detecting flings. 4494 private VelocityTracker mVelocityTracker; 4495 4496 // The active pointer id, or -1 if none. 4497 private int mActivePointerId = -1; 4498 4499 // Location where tracking started. 4500 private float mStartX; 4501 private float mStartY; 4502 4503 // Most recently observed position. 4504 private float mLastX; 4505 private float mLastY; 4506 4507 // Accumulated movement delta since the last direction key was sent. 4508 private float mAccumulatedX; 4509 private float mAccumulatedY; 4510 4511 // Set to true if any movement was delivered to the app. 4512 // Implies that tap slop was exceeded. 4513 private boolean mConsumedMovement; 4514 4515 // The most recently sent key down event. 4516 // The keycode remains set until the direction changes or a fling ends 4517 // so that repeated key events may be generated as required. 4518 private long mPendingKeyDownTime; 4519 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4520 private int mPendingKeyRepeatCount; 4521 private int mPendingKeyMetaState; 4522 4523 // The current fling velocity while a fling is in progress. 4524 private boolean mFlinging; 4525 private float mFlingVelocity; 4526 4527 public SyntheticTouchNavigationHandler() { 4528 super(true); 4529 } 4530 4531 public void process(MotionEvent event) { 4532 // Update the current device information. 4533 final long time = event.getEventTime(); 4534 final int deviceId = event.getDeviceId(); 4535 final int source = event.getSource(); 4536 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4537 finishKeys(time); 4538 finishTracking(time); 4539 mCurrentDeviceId = deviceId; 4540 mCurrentSource = source; 4541 mCurrentDeviceSupported = false; 4542 InputDevice device = event.getDevice(); 4543 if (device != null) { 4544 // In order to support an input device, we must know certain 4545 // characteristics about it, such as its size and resolution. 4546 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4547 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4548 if (xRange != null && yRange != null) { 4549 mCurrentDeviceSupported = true; 4550 4551 // Infer the resolution if it not actually known. 4552 float xRes = xRange.getResolution(); 4553 if (xRes <= 0) { 4554 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4555 } 4556 float yRes = yRange.getResolution(); 4557 if (yRes <= 0) { 4558 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4559 } 4560 float nominalRes = (xRes + yRes) * 0.5f; 4561 4562 // Precompute all of the configuration thresholds we will need. 4563 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4564 mConfigMinFlingVelocity = 4565 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4566 mConfigMaxFlingVelocity = 4567 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4568 4569 if (LOCAL_DEBUG) { 4570 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4571 + " (" + Integer.toHexString(mCurrentSource) + "): " 4572 + ", mConfigTickDistance=" + mConfigTickDistance 4573 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4574 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4575 } 4576 } 4577 } 4578 } 4579 if (!mCurrentDeviceSupported) { 4580 return; 4581 } 4582 4583 // Handle the event. 4584 final int action = event.getActionMasked(); 4585 switch (action) { 4586 case MotionEvent.ACTION_DOWN: { 4587 boolean caughtFling = mFlinging; 4588 finishKeys(time); 4589 finishTracking(time); 4590 mActivePointerId = event.getPointerId(0); 4591 mVelocityTracker = VelocityTracker.obtain(); 4592 mVelocityTracker.addMovement(event); 4593 mStartX = event.getX(); 4594 mStartY = event.getY(); 4595 mLastX = mStartX; 4596 mLastY = mStartY; 4597 mAccumulatedX = 0; 4598 mAccumulatedY = 0; 4599 4600 // If we caught a fling, then pretend that the tap slop has already 4601 // been exceeded to suppress taps whose only purpose is to stop the fling. 4602 mConsumedMovement = caughtFling; 4603 break; 4604 } 4605 4606 case MotionEvent.ACTION_MOVE: 4607 case MotionEvent.ACTION_UP: { 4608 if (mActivePointerId < 0) { 4609 break; 4610 } 4611 final int index = event.findPointerIndex(mActivePointerId); 4612 if (index < 0) { 4613 finishKeys(time); 4614 finishTracking(time); 4615 break; 4616 } 4617 4618 mVelocityTracker.addMovement(event); 4619 final float x = event.getX(index); 4620 final float y = event.getY(index); 4621 mAccumulatedX += x - mLastX; 4622 mAccumulatedY += y - mLastY; 4623 mLastX = x; 4624 mLastY = y; 4625 4626 // Consume any accumulated movement so far. 4627 final int metaState = event.getMetaState(); 4628 consumeAccumulatedMovement(time, metaState); 4629 4630 // Detect taps and flings. 4631 if (action == MotionEvent.ACTION_UP) { 4632 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4633 // It might be a fling. 4634 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4635 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4636 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4637 if (!startFling(time, vx, vy)) { 4638 finishKeys(time); 4639 } 4640 } 4641 finishTracking(time); 4642 } 4643 break; 4644 } 4645 4646 case MotionEvent.ACTION_CANCEL: { 4647 finishKeys(time); 4648 finishTracking(time); 4649 break; 4650 } 4651 } 4652 } 4653 4654 public void cancel(MotionEvent event) { 4655 if (mCurrentDeviceId == event.getDeviceId() 4656 && mCurrentSource == event.getSource()) { 4657 final long time = event.getEventTime(); 4658 finishKeys(time); 4659 finishTracking(time); 4660 } 4661 } 4662 4663 private void finishKeys(long time) { 4664 cancelFling(); 4665 sendKeyUp(time); 4666 } 4667 4668 private void finishTracking(long time) { 4669 if (mActivePointerId >= 0) { 4670 mActivePointerId = -1; 4671 mVelocityTracker.recycle(); 4672 mVelocityTracker = null; 4673 } 4674 } 4675 4676 private void consumeAccumulatedMovement(long time, int metaState) { 4677 final float absX = Math.abs(mAccumulatedX); 4678 final float absY = Math.abs(mAccumulatedY); 4679 if (absX >= absY) { 4680 if (absX >= mConfigTickDistance) { 4681 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4682 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4683 mAccumulatedY = 0; 4684 mConsumedMovement = true; 4685 } 4686 } else { 4687 if (absY >= mConfigTickDistance) { 4688 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4689 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4690 mAccumulatedX = 0; 4691 mConsumedMovement = true; 4692 } 4693 } 4694 } 4695 4696 private float consumeAccumulatedMovement(long time, int metaState, 4697 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4698 while (accumulator <= -mConfigTickDistance) { 4699 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4700 accumulator += mConfigTickDistance; 4701 } 4702 while (accumulator >= mConfigTickDistance) { 4703 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4704 accumulator -= mConfigTickDistance; 4705 } 4706 return accumulator; 4707 } 4708 4709 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4710 if (mPendingKeyCode != keyCode) { 4711 sendKeyUp(time); 4712 mPendingKeyDownTime = time; 4713 mPendingKeyCode = keyCode; 4714 mPendingKeyRepeatCount = 0; 4715 } else { 4716 mPendingKeyRepeatCount += 1; 4717 } 4718 mPendingKeyMetaState = metaState; 4719 4720 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4721 // but it doesn't quite make sense when simulating the events in this way. 4722 if (LOCAL_DEBUG) { 4723 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4724 + ", repeatCount=" + mPendingKeyRepeatCount 4725 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4726 } 4727 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4728 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4729 mPendingKeyMetaState, mCurrentDeviceId, 4730 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4731 } 4732 4733 private void sendKeyUp(long time) { 4734 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4735 if (LOCAL_DEBUG) { 4736 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4737 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4738 } 4739 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4740 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4741 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4742 mCurrentSource)); 4743 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4744 } 4745 } 4746 4747 private boolean startFling(long time, float vx, float vy) { 4748 if (LOCAL_DEBUG) { 4749 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4750 + ", min=" + mConfigMinFlingVelocity); 4751 } 4752 4753 // Flings must be oriented in the same direction as the preceding movements. 4754 switch (mPendingKeyCode) { 4755 case KeyEvent.KEYCODE_DPAD_LEFT: 4756 if (-vx >= mConfigMinFlingVelocity 4757 && Math.abs(vy) < mConfigMinFlingVelocity) { 4758 mFlingVelocity = -vx; 4759 break; 4760 } 4761 return false; 4762 4763 case KeyEvent.KEYCODE_DPAD_RIGHT: 4764 if (vx >= mConfigMinFlingVelocity 4765 && Math.abs(vy) < mConfigMinFlingVelocity) { 4766 mFlingVelocity = vx; 4767 break; 4768 } 4769 return false; 4770 4771 case KeyEvent.KEYCODE_DPAD_UP: 4772 if (-vy >= mConfigMinFlingVelocity 4773 && Math.abs(vx) < mConfigMinFlingVelocity) { 4774 mFlingVelocity = -vy; 4775 break; 4776 } 4777 return false; 4778 4779 case KeyEvent.KEYCODE_DPAD_DOWN: 4780 if (vy >= mConfigMinFlingVelocity 4781 && Math.abs(vx) < mConfigMinFlingVelocity) { 4782 mFlingVelocity = vy; 4783 break; 4784 } 4785 return false; 4786 } 4787 4788 // Post the first fling event. 4789 mFlinging = postFling(time); 4790 return mFlinging; 4791 } 4792 4793 private boolean postFling(long time) { 4794 // The idea here is to estimate the time when the pointer would have 4795 // traveled one tick distance unit given the current fling velocity. 4796 // This effect creates continuity of motion. 4797 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4798 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4799 postAtTime(mFlingRunnable, time + delay); 4800 if (LOCAL_DEBUG) { 4801 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4802 + mFlingVelocity + ", delay=" + delay 4803 + ", keyCode=" + mPendingKeyCode); 4804 } 4805 return true; 4806 } 4807 return false; 4808 } 4809 4810 private void cancelFling() { 4811 if (mFlinging) { 4812 removeCallbacks(mFlingRunnable); 4813 mFlinging = false; 4814 } 4815 } 4816 4817 private final Runnable mFlingRunnable = new Runnable() { 4818 @Override 4819 public void run() { 4820 final long time = SystemClock.uptimeMillis(); 4821 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4822 mFlingVelocity *= FLING_TICK_DECAY; 4823 if (!postFling(time)) { 4824 mFlinging = false; 4825 finishKeys(time); 4826 } 4827 } 4828 }; 4829 } 4830 4831 /** 4832 * Returns true if the key is used for keyboard navigation. 4833 * @param keyEvent The key event. 4834 * @return True if the key is used for keyboard navigation. 4835 */ 4836 private static boolean isNavigationKey(KeyEvent keyEvent) { 4837 switch (keyEvent.getKeyCode()) { 4838 case KeyEvent.KEYCODE_DPAD_LEFT: 4839 case KeyEvent.KEYCODE_DPAD_RIGHT: 4840 case KeyEvent.KEYCODE_DPAD_UP: 4841 case KeyEvent.KEYCODE_DPAD_DOWN: 4842 case KeyEvent.KEYCODE_DPAD_CENTER: 4843 case KeyEvent.KEYCODE_PAGE_UP: 4844 case KeyEvent.KEYCODE_PAGE_DOWN: 4845 case KeyEvent.KEYCODE_MOVE_HOME: 4846 case KeyEvent.KEYCODE_MOVE_END: 4847 case KeyEvent.KEYCODE_TAB: 4848 case KeyEvent.KEYCODE_SPACE: 4849 case KeyEvent.KEYCODE_ENTER: 4850 return true; 4851 } 4852 return false; 4853 } 4854 4855 /** 4856 * Returns true if the key is used for typing. 4857 * @param keyEvent The key event. 4858 * @return True if the key is used for typing. 4859 */ 4860 private static boolean isTypingKey(KeyEvent keyEvent) { 4861 return keyEvent.getUnicodeChar() > 0; 4862 } 4863 4864 /** 4865 * See if the key event means we should leave touch mode (and leave touch mode if so). 4866 * @param event The key event. 4867 * @return Whether this key event should be consumed (meaning the act of 4868 * leaving touch mode alone is considered the event). 4869 */ 4870 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4871 // Only relevant in touch mode. 4872 if (!mAttachInfo.mInTouchMode) { 4873 return false; 4874 } 4875 4876 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4877 final int action = event.getAction(); 4878 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4879 return false; 4880 } 4881 4882 // Don't leave touch mode if the IME told us not to. 4883 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4884 return false; 4885 } 4886 4887 // If the key can be used for keyboard navigation then leave touch mode 4888 // and select a focused view if needed (in ensureTouchMode). 4889 // When a new focused view is selected, we consume the navigation key because 4890 // navigation doesn't make much sense unless a view already has focus so 4891 // the key's purpose is to set focus. 4892 if (isNavigationKey(event)) { 4893 return ensureTouchMode(false); 4894 } 4895 4896 // If the key can be used for typing then leave touch mode 4897 // and select a focused view if needed (in ensureTouchMode). 4898 // Always allow the view to process the typing key. 4899 if (isTypingKey(event)) { 4900 ensureTouchMode(false); 4901 return false; 4902 } 4903 4904 return false; 4905 } 4906 4907 /* drag/drop */ 4908 void setLocalDragState(Object obj) { 4909 mLocalDragState = obj; 4910 } 4911 4912 private void handleDragEvent(DragEvent event) { 4913 // From the root, only drag start/end/location are dispatched. entered/exited 4914 // are determined and dispatched by the viewgroup hierarchy, who then report 4915 // that back here for ultimate reporting back to the framework. 4916 if (mView != null && mAdded) { 4917 final int what = event.mAction; 4918 4919 if (what == DragEvent.ACTION_DRAG_EXITED) { 4920 // A direct EXITED event means that the window manager knows we've just crossed 4921 // a window boundary, so the current drag target within this one must have 4922 // just been exited. Send it the usual notifications and then we're done 4923 // for now. 4924 mView.dispatchDragEvent(event); 4925 } else { 4926 // Cache the drag description when the operation starts, then fill it in 4927 // on subsequent calls as a convenience 4928 if (what == DragEvent.ACTION_DRAG_STARTED) { 4929 mCurrentDragView = null; // Start the current-recipient tracking 4930 mDragDescription = event.mClipDescription; 4931 } else { 4932 event.mClipDescription = mDragDescription; 4933 } 4934 4935 // For events with a [screen] location, translate into window coordinates 4936 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4937 mDragPoint.set(event.mX, event.mY); 4938 if (mTranslator != null) { 4939 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4940 } 4941 4942 if (mCurScrollY != 0) { 4943 mDragPoint.offset(0, mCurScrollY); 4944 } 4945 4946 event.mX = mDragPoint.x; 4947 event.mY = mDragPoint.y; 4948 } 4949 4950 // Remember who the current drag target is pre-dispatch 4951 final View prevDragView = mCurrentDragView; 4952 4953 // Now dispatch the drag/drop event 4954 boolean result = mView.dispatchDragEvent(event); 4955 4956 // If we changed apparent drag target, tell the OS about it 4957 if (prevDragView != mCurrentDragView) { 4958 try { 4959 if (prevDragView != null) { 4960 mWindowSession.dragRecipientExited(mWindow); 4961 } 4962 if (mCurrentDragView != null) { 4963 mWindowSession.dragRecipientEntered(mWindow); 4964 } 4965 } catch (RemoteException e) { 4966 Slog.e(TAG, "Unable to note drag target change"); 4967 } 4968 } 4969 4970 // Report the drop result when we're done 4971 if (what == DragEvent.ACTION_DROP) { 4972 mDragDescription = null; 4973 try { 4974 Log.i(TAG, "Reporting drop result: " + result); 4975 mWindowSession.reportDropResult(mWindow, result); 4976 } catch (RemoteException e) { 4977 Log.e(TAG, "Unable to report drop result"); 4978 } 4979 } 4980 4981 // When the drag operation ends, release any local state object 4982 // that may have been in use 4983 if (what == DragEvent.ACTION_DRAG_ENDED) { 4984 setLocalDragState(null); 4985 } 4986 } 4987 } 4988 event.recycle(); 4989 } 4990 4991 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 4992 if (mSeq != args.seq) { 4993 // The sequence has changed, so we need to update our value and make 4994 // sure to do a traversal afterward so the window manager is given our 4995 // most recent data. 4996 mSeq = args.seq; 4997 mAttachInfo.mForceReportNewAttributes = true; 4998 scheduleTraversals(); 4999 } 5000 if (mView == null) return; 5001 if (args.localChanges != 0) { 5002 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5003 } 5004 if (mAttachInfo != null) { 5005 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5006 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5007 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5008 mView.dispatchSystemUiVisibilityChanged(visibility); 5009 } 5010 } 5011 } 5012 5013 public void handleDispatchDoneAnimating() { 5014 if (mWindowsAnimating) { 5015 mWindowsAnimating = false; 5016 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5017 scheduleTraversals(); 5018 } 5019 } 5020 } 5021 5022 public void getLastTouchPoint(Point outLocation) { 5023 outLocation.x = (int) mLastTouchPoint.x; 5024 outLocation.y = (int) mLastTouchPoint.y; 5025 } 5026 5027 public void setDragFocus(View newDragTarget) { 5028 if (mCurrentDragView != newDragTarget) { 5029 mCurrentDragView = newDragTarget; 5030 } 5031 } 5032 5033 private AudioManager getAudioManager() { 5034 if (mView == null) { 5035 throw new IllegalStateException("getAudioManager called when there is no mView"); 5036 } 5037 if (mAudioManager == null) { 5038 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5039 } 5040 return mAudioManager; 5041 } 5042 5043 public AccessibilityInteractionController getAccessibilityInteractionController() { 5044 if (mView == null) { 5045 throw new IllegalStateException("getAccessibilityInteractionController" 5046 + " called when there is no mView"); 5047 } 5048 if (mAccessibilityInteractionController == null) { 5049 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5050 } 5051 return mAccessibilityInteractionController; 5052 } 5053 5054 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5055 boolean insetsPending) throws RemoteException { 5056 5057 float appScale = mAttachInfo.mApplicationScale; 5058 boolean restore = false; 5059 if (params != null && mTranslator != null) { 5060 restore = true; 5061 params.backup(); 5062 mTranslator.translateWindowLayout(params); 5063 } 5064 if (params != null) { 5065 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5066 } 5067 mPendingConfiguration.seq = 0; 5068 //Log.d(TAG, ">>>>>> CALLING relayout"); 5069 if (params != null && mOrigWindowType != params.type) { 5070 // For compatibility with old apps, don't crash here. 5071 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5072 Slog.w(TAG, "Window type can not be changed after " 5073 + "the window is added; ignoring change of " + mView); 5074 params.type = mOrigWindowType; 5075 } 5076 } 5077 int relayoutResult = mWindowSession.relayout( 5078 mWindow, mSeq, params, 5079 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5080 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5081 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5082 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5083 mPendingConfiguration, mSurface); 5084 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5085 if (restore) { 5086 params.restore(); 5087 } 5088 5089 if (mTranslator != null) { 5090 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5091 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5092 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5093 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5094 } 5095 return relayoutResult; 5096 } 5097 5098 /** 5099 * {@inheritDoc} 5100 */ 5101 @Override 5102 public void playSoundEffect(int effectId) { 5103 checkThread(); 5104 5105 if (mMediaDisabled) { 5106 return; 5107 } 5108 5109 try { 5110 final AudioManager audioManager = getAudioManager(); 5111 5112 switch (effectId) { 5113 case SoundEffectConstants.CLICK: 5114 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5115 return; 5116 case SoundEffectConstants.NAVIGATION_DOWN: 5117 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5118 return; 5119 case SoundEffectConstants.NAVIGATION_LEFT: 5120 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5121 return; 5122 case SoundEffectConstants.NAVIGATION_RIGHT: 5123 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5124 return; 5125 case SoundEffectConstants.NAVIGATION_UP: 5126 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5127 return; 5128 default: 5129 throw new IllegalArgumentException("unknown effect id " + effectId + 5130 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5131 } 5132 } catch (IllegalStateException e) { 5133 // Exception thrown by getAudioManager() when mView is null 5134 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5135 e.printStackTrace(); 5136 } 5137 } 5138 5139 /** 5140 * {@inheritDoc} 5141 */ 5142 @Override 5143 public boolean performHapticFeedback(int effectId, boolean always) { 5144 try { 5145 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5146 } catch (RemoteException e) { 5147 return false; 5148 } 5149 } 5150 5151 /** 5152 * {@inheritDoc} 5153 */ 5154 @Override 5155 public View focusSearch(View focused, int direction) { 5156 checkThread(); 5157 if (!(mView instanceof ViewGroup)) { 5158 return null; 5159 } 5160 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5161 } 5162 5163 public void debug() { 5164 mView.debug(); 5165 } 5166 5167 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5168 String innerPrefix = prefix + " "; 5169 writer.print(prefix); writer.println("ViewRoot:"); 5170 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5171 writer.print(" mRemoved="); writer.println(mRemoved); 5172 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5173 writer.println(mConsumeBatchedInputScheduled); 5174 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5175 writer.println(mPendingInputEventCount); 5176 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5177 writer.println(mProcessInputEventsScheduled); 5178 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5179 writer.print(mTraversalScheduled); 5180 if (mTraversalScheduled) { 5181 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5182 } else { 5183 writer.println(); 5184 } 5185 mFirstInputStage.dump(innerPrefix, writer); 5186 5187 mChoreographer.dump(prefix, writer); 5188 5189 writer.print(prefix); writer.println("View Hierarchy:"); 5190 dumpViewHierarchy(innerPrefix, writer, mView); 5191 } 5192 5193 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5194 writer.print(prefix); 5195 if (view == null) { 5196 writer.println("null"); 5197 return; 5198 } 5199 writer.println(view.toString()); 5200 if (!(view instanceof ViewGroup)) { 5201 return; 5202 } 5203 ViewGroup grp = (ViewGroup)view; 5204 final int N = grp.getChildCount(); 5205 if (N <= 0) { 5206 return; 5207 } 5208 prefix = prefix + " "; 5209 for (int i=0; i<N; i++) { 5210 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5211 } 5212 } 5213 5214 public void dumpGfxInfo(int[] info) { 5215 info[0] = info[1] = 0; 5216 if (mView != null) { 5217 getGfxInfo(mView, info); 5218 } 5219 } 5220 5221 private static void getGfxInfo(View view, int[] info) { 5222 DisplayList displayList = view.mDisplayList; 5223 info[0]++; 5224 if (displayList != null) { 5225 info[1] += displayList.getSize(); 5226 } 5227 5228 if (view instanceof ViewGroup) { 5229 ViewGroup group = (ViewGroup) view; 5230 5231 int count = group.getChildCount(); 5232 for (int i = 0; i < count; i++) { 5233 getGfxInfo(group.getChildAt(i), info); 5234 } 5235 } 5236 } 5237 5238 /** 5239 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5240 * @return True, request has been queued. False, request has been completed. 5241 */ 5242 boolean die(boolean immediate) { 5243 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5244 // done by dispatchDetachedFromWindow will cause havoc on return. 5245 if (immediate && !mIsInTraversal) { 5246 doDie(); 5247 return false; 5248 } 5249 5250 if (!mIsDrawing) { 5251 destroyHardwareRenderer(); 5252 } else { 5253 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5254 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5255 } 5256 mHandler.sendEmptyMessage(MSG_DIE); 5257 return true; 5258 } 5259 5260 void doDie() { 5261 checkThread(); 5262 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5263 synchronized (this) { 5264 if (mRemoved) { 5265 return; 5266 } 5267 mRemoved = true; 5268 if (mAdded) { 5269 dispatchDetachedFromWindow(); 5270 } 5271 5272 if (mAdded && !mFirst) { 5273 invalidateDisplayLists(); 5274 destroyHardwareRenderer(); 5275 5276 if (mView != null) { 5277 int viewVisibility = mView.getVisibility(); 5278 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5279 if (mWindowAttributesChanged || viewVisibilityChanged) { 5280 // If layout params have been changed, first give them 5281 // to the window manager to make sure it has the correct 5282 // animation info. 5283 try { 5284 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5285 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5286 mWindowSession.finishDrawing(mWindow); 5287 } 5288 } catch (RemoteException e) { 5289 } 5290 } 5291 5292 mSurface.release(); 5293 } 5294 } 5295 5296 mAdded = false; 5297 } 5298 WindowManagerGlobal.getInstance().doRemoveView(this); 5299 } 5300 5301 public void requestUpdateConfiguration(Configuration config) { 5302 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5303 mHandler.sendMessage(msg); 5304 } 5305 5306 public void loadSystemProperties() { 5307 mHandler.post(new Runnable() { 5308 @Override 5309 public void run() { 5310 // Profiling 5311 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5312 profileRendering(mAttachInfo.mHasWindowFocus); 5313 5314 // Media (used by sound effects) 5315 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5316 5317 // Hardware rendering 5318 if (mAttachInfo.mHardwareRenderer != null) { 5319 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5320 invalidate(); 5321 } 5322 } 5323 5324 // Layout debugging 5325 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5326 if (layout != mAttachInfo.mDebugLayout) { 5327 mAttachInfo.mDebugLayout = layout; 5328 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5329 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5330 } 5331 } 5332 } 5333 }); 5334 } 5335 5336 private void destroyHardwareRenderer() { 5337 AttachInfo attachInfo = mAttachInfo; 5338 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5339 5340 if (hardwareRenderer != null) { 5341 if (mView != null) { 5342 hardwareRenderer.destroyHardwareResources(mView); 5343 } 5344 hardwareRenderer.destroy(true); 5345 hardwareRenderer.setRequested(false); 5346 5347 attachInfo.mHardwareRenderer = null; 5348 attachInfo.mHardwareAccelerated = false; 5349 } 5350 } 5351 5352 public void dispatchFinishInputConnection(InputConnection connection) { 5353 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5354 mHandler.sendMessage(msg); 5355 } 5356 5357 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5358 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5359 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5360 + " contentInsets=" + contentInsets.toShortString() 5361 + " visibleInsets=" + visibleInsets.toShortString() 5362 + " reportDraw=" + reportDraw); 5363 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5364 if (mTranslator != null) { 5365 mTranslator.translateRectInScreenToAppWindow(frame); 5366 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5367 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5368 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5369 } 5370 SomeArgs args = SomeArgs.obtain(); 5371 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5372 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5373 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5374 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5375 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5376 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5377 msg.obj = args; 5378 mHandler.sendMessage(msg); 5379 } 5380 5381 public void dispatchMoved(int newX, int newY) { 5382 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5383 if (mTranslator != null) { 5384 PointF point = new PointF(newX, newY); 5385 mTranslator.translatePointInScreenToAppWindow(point); 5386 newX = (int) (point.x + 0.5); 5387 newY = (int) (point.y + 0.5); 5388 } 5389 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5390 mHandler.sendMessage(msg); 5391 } 5392 5393 /** 5394 * Represents a pending input event that is waiting in a queue. 5395 * 5396 * Input events are processed in serial order by the timestamp specified by 5397 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5398 * one input event to the application at a time and waits for the application 5399 * to finish handling it before delivering the next one. 5400 * 5401 * However, because the application or IME can synthesize and inject multiple 5402 * key events at a time without going through the input dispatcher, we end up 5403 * needing a queue on the application's side. 5404 */ 5405 private static final class QueuedInputEvent { 5406 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5407 public static final int FLAG_DEFERRED = 1 << 1; 5408 public static final int FLAG_FINISHED = 1 << 2; 5409 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5410 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5411 5412 public QueuedInputEvent mNext; 5413 5414 public InputEvent mEvent; 5415 public InputEventReceiver mReceiver; 5416 public int mFlags; 5417 5418 public boolean shouldSkipIme() { 5419 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5420 return true; 5421 } 5422 return mEvent instanceof MotionEvent 5423 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5424 } 5425 } 5426 5427 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5428 InputEventReceiver receiver, int flags) { 5429 QueuedInputEvent q = mQueuedInputEventPool; 5430 if (q != null) { 5431 mQueuedInputEventPoolSize -= 1; 5432 mQueuedInputEventPool = q.mNext; 5433 q.mNext = null; 5434 } else { 5435 q = new QueuedInputEvent(); 5436 } 5437 5438 q.mEvent = event; 5439 q.mReceiver = receiver; 5440 q.mFlags = flags; 5441 return q; 5442 } 5443 5444 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5445 q.mEvent = null; 5446 q.mReceiver = null; 5447 5448 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5449 mQueuedInputEventPoolSize += 1; 5450 q.mNext = mQueuedInputEventPool; 5451 mQueuedInputEventPool = q; 5452 } 5453 } 5454 5455 void enqueueInputEvent(InputEvent event) { 5456 enqueueInputEvent(event, null, 0, false); 5457 } 5458 5459 void enqueueInputEvent(InputEvent event, 5460 InputEventReceiver receiver, int flags, boolean processImmediately) { 5461 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5462 5463 // Always enqueue the input event in order, regardless of its time stamp. 5464 // We do this because the application or the IME may inject key events 5465 // in response to touch events and we want to ensure that the injected keys 5466 // are processed in the order they were received and we cannot trust that 5467 // the time stamp of injected events are monotonic. 5468 QueuedInputEvent last = mPendingInputEventTail; 5469 if (last == null) { 5470 mPendingInputEventHead = q; 5471 mPendingInputEventTail = q; 5472 } else { 5473 last.mNext = q; 5474 mPendingInputEventTail = q; 5475 } 5476 mPendingInputEventCount += 1; 5477 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5478 mPendingInputEventCount); 5479 5480 if (processImmediately) { 5481 doProcessInputEvents(); 5482 } else { 5483 scheduleProcessInputEvents(); 5484 } 5485 } 5486 5487 private void scheduleProcessInputEvents() { 5488 if (!mProcessInputEventsScheduled) { 5489 mProcessInputEventsScheduled = true; 5490 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5491 msg.setAsynchronous(true); 5492 mHandler.sendMessage(msg); 5493 } 5494 } 5495 5496 void doProcessInputEvents() { 5497 // Deliver all pending input events in the queue. 5498 while (mPendingInputEventHead != null) { 5499 QueuedInputEvent q = mPendingInputEventHead; 5500 mPendingInputEventHead = q.mNext; 5501 if (mPendingInputEventHead == null) { 5502 mPendingInputEventTail = null; 5503 } 5504 q.mNext = null; 5505 5506 mPendingInputEventCount -= 1; 5507 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5508 mPendingInputEventCount); 5509 5510 deliverInputEvent(q); 5511 } 5512 5513 // We are done processing all input events that we can process right now 5514 // so we can clear the pending flag immediately. 5515 if (mProcessInputEventsScheduled) { 5516 mProcessInputEventsScheduled = false; 5517 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5518 } 5519 } 5520 5521 private void deliverInputEvent(QueuedInputEvent q) { 5522 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5523 q.mEvent.getSequenceNumber()); 5524 if (mInputEventConsistencyVerifier != null) { 5525 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5526 } 5527 5528 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5529 if (stage != null) { 5530 stage.deliver(q); 5531 } else { 5532 finishInputEvent(q); 5533 } 5534 } 5535 5536 private void finishInputEvent(QueuedInputEvent q) { 5537 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5538 q.mEvent.getSequenceNumber()); 5539 if (q.mReceiver != null) { 5540 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5541 q.mReceiver.finishInputEvent(q.mEvent, handled); 5542 } else { 5543 q.mEvent.recycleIfNeededAfterDispatch(); 5544 } 5545 5546 recycleQueuedInputEvent(q); 5547 } 5548 5549 static boolean isTerminalInputEvent(InputEvent event) { 5550 if (event instanceof KeyEvent) { 5551 final KeyEvent keyEvent = (KeyEvent)event; 5552 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5553 } else { 5554 final MotionEvent motionEvent = (MotionEvent)event; 5555 final int action = motionEvent.getAction(); 5556 return action == MotionEvent.ACTION_UP 5557 || action == MotionEvent.ACTION_CANCEL 5558 || action == MotionEvent.ACTION_HOVER_EXIT; 5559 } 5560 } 5561 5562 void scheduleConsumeBatchedInput() { 5563 if (!mConsumeBatchedInputScheduled) { 5564 mConsumeBatchedInputScheduled = true; 5565 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5566 mConsumedBatchedInputRunnable, null); 5567 } 5568 } 5569 5570 void unscheduleConsumeBatchedInput() { 5571 if (mConsumeBatchedInputScheduled) { 5572 mConsumeBatchedInputScheduled = false; 5573 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5574 mConsumedBatchedInputRunnable, null); 5575 } 5576 } 5577 5578 void doConsumeBatchedInput(long frameTimeNanos) { 5579 if (mConsumeBatchedInputScheduled) { 5580 mConsumeBatchedInputScheduled = false; 5581 if (mInputEventReceiver != null) { 5582 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos)) { 5583 // If we consumed a batch here, we want to go ahead and schedule the 5584 // consumption of batched input events on the next frame. Otherwise, we would 5585 // wait until we have more input events pending and might get starved by other 5586 // things occurring in the process. 5587 scheduleConsumeBatchedInput(); 5588 } 5589 } 5590 doProcessInputEvents(); 5591 } 5592 } 5593 5594 final class TraversalRunnable implements Runnable { 5595 @Override 5596 public void run() { 5597 doTraversal(); 5598 } 5599 } 5600 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5601 5602 final class WindowInputEventReceiver extends InputEventReceiver { 5603 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5604 super(inputChannel, looper); 5605 } 5606 5607 @Override 5608 public void onInputEvent(InputEvent event) { 5609 enqueueInputEvent(event, this, 0, true); 5610 } 5611 5612 @Override 5613 public void onBatchedInputEventPending() { 5614 scheduleConsumeBatchedInput(); 5615 } 5616 5617 @Override 5618 public void dispose() { 5619 unscheduleConsumeBatchedInput(); 5620 super.dispose(); 5621 } 5622 } 5623 WindowInputEventReceiver mInputEventReceiver; 5624 5625 final class ConsumeBatchedInputRunnable implements Runnable { 5626 @Override 5627 public void run() { 5628 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5629 } 5630 } 5631 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5632 new ConsumeBatchedInputRunnable(); 5633 boolean mConsumeBatchedInputScheduled; 5634 5635 final class InvalidateOnAnimationRunnable implements Runnable { 5636 private boolean mPosted; 5637 private final ArrayList<View> mViews = new ArrayList<View>(); 5638 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5639 new ArrayList<AttachInfo.InvalidateInfo>(); 5640 private View[] mTempViews; 5641 private AttachInfo.InvalidateInfo[] mTempViewRects; 5642 5643 public void addView(View view) { 5644 synchronized (this) { 5645 mViews.add(view); 5646 postIfNeededLocked(); 5647 } 5648 } 5649 5650 public void addViewRect(AttachInfo.InvalidateInfo info) { 5651 synchronized (this) { 5652 mViewRects.add(info); 5653 postIfNeededLocked(); 5654 } 5655 } 5656 5657 public void removeView(View view) { 5658 synchronized (this) { 5659 mViews.remove(view); 5660 5661 for (int i = mViewRects.size(); i-- > 0; ) { 5662 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5663 if (info.target == view) { 5664 mViewRects.remove(i); 5665 info.recycle(); 5666 } 5667 } 5668 5669 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5670 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5671 mPosted = false; 5672 } 5673 } 5674 } 5675 5676 @Override 5677 public void run() { 5678 final int viewCount; 5679 final int viewRectCount; 5680 synchronized (this) { 5681 mPosted = false; 5682 5683 viewCount = mViews.size(); 5684 if (viewCount != 0) { 5685 mTempViews = mViews.toArray(mTempViews != null 5686 ? mTempViews : new View[viewCount]); 5687 mViews.clear(); 5688 } 5689 5690 viewRectCount = mViewRects.size(); 5691 if (viewRectCount != 0) { 5692 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5693 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5694 mViewRects.clear(); 5695 } 5696 } 5697 5698 for (int i = 0; i < viewCount; i++) { 5699 mTempViews[i].invalidate(); 5700 mTempViews[i] = null; 5701 } 5702 5703 for (int i = 0; i < viewRectCount; i++) { 5704 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5705 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5706 info.recycle(); 5707 } 5708 } 5709 5710 private void postIfNeededLocked() { 5711 if (!mPosted) { 5712 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5713 mPosted = true; 5714 } 5715 } 5716 } 5717 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5718 new InvalidateOnAnimationRunnable(); 5719 5720 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5721 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5722 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5723 } 5724 5725 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5726 long delayMilliseconds) { 5727 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5728 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5729 } 5730 5731 public void dispatchInvalidateOnAnimation(View view) { 5732 mInvalidateOnAnimationRunnable.addView(view); 5733 } 5734 5735 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5736 mInvalidateOnAnimationRunnable.addViewRect(info); 5737 } 5738 5739 public void enqueueDisplayList(DisplayList displayList) { 5740 mDisplayLists.add(displayList); 5741 } 5742 5743 public void cancelInvalidate(View view) { 5744 mHandler.removeMessages(MSG_INVALIDATE, view); 5745 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5746 // them to the pool 5747 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5748 mInvalidateOnAnimationRunnable.removeView(view); 5749 } 5750 5751 public void dispatchInputEvent(InputEvent event) { 5752 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, event); 5753 msg.setAsynchronous(true); 5754 mHandler.sendMessage(msg); 5755 } 5756 5757 public void dispatchKeyFromIme(KeyEvent event) { 5758 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5759 msg.setAsynchronous(true); 5760 mHandler.sendMessage(msg); 5761 } 5762 5763 public void dispatchUnhandledKey(KeyEvent event) { 5764 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5765 // Some fallback keys are decided by the ViewRoot as they might have special 5766 // properties (e.g. are locale aware). These take precedence over fallbacks defined by 5767 // the kcm. 5768 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5769 final int keyCode = event.getKeyCode(); 5770 final int metaState = event.getMetaState(); 5771 5772 // Check for fallback actions specified by the key character map. 5773 KeyCharacterMap.FallbackAction fallbackAction = 5774 kcm.getFallbackAction(keyCode, metaState); 5775 if (fallbackAction != null) { 5776 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5777 KeyEvent fallbackEvent = KeyEvent.obtain( 5778 event.getDownTime(), event.getEventTime(), 5779 event.getAction(), fallbackAction.keyCode, 5780 event.getRepeatCount(), fallbackAction.metaState, 5781 event.getDeviceId(), event.getScanCode(), 5782 flags, event.getSource(), null); 5783 fallbackAction.recycle(); 5784 dispatchInputEvent(fallbackEvent); 5785 } 5786 } 5787 } 5788 5789 public void dispatchAppVisibility(boolean visible) { 5790 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5791 msg.arg1 = visible ? 1 : 0; 5792 mHandler.sendMessage(msg); 5793 } 5794 5795 public void dispatchScreenStateChange(boolean on) { 5796 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5797 msg.arg1 = on ? 1 : 0; 5798 mHandler.sendMessage(msg); 5799 } 5800 5801 public void dispatchGetNewSurface() { 5802 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5803 mHandler.sendMessage(msg); 5804 } 5805 5806 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5807 Message msg = Message.obtain(); 5808 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5809 msg.arg1 = hasFocus ? 1 : 0; 5810 msg.arg2 = inTouchMode ? 1 : 0; 5811 mHandler.sendMessage(msg); 5812 } 5813 5814 public void dispatchCloseSystemDialogs(String reason) { 5815 Message msg = Message.obtain(); 5816 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5817 msg.obj = reason; 5818 mHandler.sendMessage(msg); 5819 } 5820 5821 public void dispatchDragEvent(DragEvent event) { 5822 final int what; 5823 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5824 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5825 mHandler.removeMessages(what); 5826 } else { 5827 what = MSG_DISPATCH_DRAG_EVENT; 5828 } 5829 Message msg = mHandler.obtainMessage(what, event); 5830 mHandler.sendMessage(msg); 5831 } 5832 5833 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5834 int localValue, int localChanges) { 5835 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5836 args.seq = seq; 5837 args.globalVisibility = globalVisibility; 5838 args.localValue = localValue; 5839 args.localChanges = localChanges; 5840 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5841 } 5842 5843 public void dispatchDoneAnimating() { 5844 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5845 } 5846 5847 public void dispatchCheckFocus() { 5848 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5849 // This will result in a call to checkFocus() below. 5850 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5851 } 5852 } 5853 5854 /** 5855 * Post a callback to send a 5856 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5857 * This event is send at most once every 5858 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5859 */ 5860 private void postSendWindowContentChangedCallback(View source, int changeType) { 5861 if (mSendWindowContentChangedAccessibilityEvent == null) { 5862 mSendWindowContentChangedAccessibilityEvent = 5863 new SendWindowContentChangedAccessibilityEvent(); 5864 } 5865 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 5866 } 5867 5868 /** 5869 * Remove a posted callback to send a 5870 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5871 */ 5872 private void removeSendWindowContentChangedCallback() { 5873 if (mSendWindowContentChangedAccessibilityEvent != null) { 5874 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5875 } 5876 } 5877 5878 @Override 5879 public boolean showContextMenuForChild(View originalView) { 5880 return false; 5881 } 5882 5883 @Override 5884 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5885 return null; 5886 } 5887 5888 @Override 5889 public void createContextMenu(ContextMenu menu) { 5890 } 5891 5892 @Override 5893 public void childDrawableStateChanged(View child) { 5894 } 5895 5896 @Override 5897 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5898 if (mView == null) { 5899 return false; 5900 } 5901 // Intercept accessibility focus events fired by virtual nodes to keep 5902 // track of accessibility focus position in such nodes. 5903 final int eventType = event.getEventType(); 5904 switch (eventType) { 5905 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5906 final long sourceNodeId = event.getSourceNodeId(); 5907 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5908 sourceNodeId); 5909 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5910 if (source != null) { 5911 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5912 if (provider != null) { 5913 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5914 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5915 setAccessibilityFocus(source, node); 5916 } 5917 } 5918 } break; 5919 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5920 final long sourceNodeId = event.getSourceNodeId(); 5921 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5922 sourceNodeId); 5923 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5924 if (source != null) { 5925 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5926 if (provider != null) { 5927 setAccessibilityFocus(null, null); 5928 } 5929 } 5930 } break; 5931 } 5932 mAccessibilityManager.sendAccessibilityEvent(event); 5933 return true; 5934 } 5935 5936 @Override 5937 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 5938 postSendWindowContentChangedCallback(source, changeType); 5939 } 5940 5941 @Override 5942 public boolean canResolveLayoutDirection() { 5943 return true; 5944 } 5945 5946 @Override 5947 public boolean isLayoutDirectionResolved() { 5948 return true; 5949 } 5950 5951 @Override 5952 public int getLayoutDirection() { 5953 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5954 } 5955 5956 @Override 5957 public boolean canResolveTextDirection() { 5958 return true; 5959 } 5960 5961 @Override 5962 public boolean isTextDirectionResolved() { 5963 return true; 5964 } 5965 5966 @Override 5967 public int getTextDirection() { 5968 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5969 } 5970 5971 @Override 5972 public boolean canResolveTextAlignment() { 5973 return true; 5974 } 5975 5976 @Override 5977 public boolean isTextAlignmentResolved() { 5978 return true; 5979 } 5980 5981 @Override 5982 public int getTextAlignment() { 5983 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5984 } 5985 5986 private View getCommonPredecessor(View first, View second) { 5987 if (mAttachInfo != null) { 5988 if (mTempHashSet == null) { 5989 mTempHashSet = new HashSet<View>(); 5990 } 5991 HashSet<View> seen = mTempHashSet; 5992 seen.clear(); 5993 View firstCurrent = first; 5994 while (firstCurrent != null) { 5995 seen.add(firstCurrent); 5996 ViewParent firstCurrentParent = firstCurrent.mParent; 5997 if (firstCurrentParent instanceof View) { 5998 firstCurrent = (View) firstCurrentParent; 5999 } else { 6000 firstCurrent = null; 6001 } 6002 } 6003 View secondCurrent = second; 6004 while (secondCurrent != null) { 6005 if (seen.contains(secondCurrent)) { 6006 seen.clear(); 6007 return secondCurrent; 6008 } 6009 ViewParent secondCurrentParent = secondCurrent.mParent; 6010 if (secondCurrentParent instanceof View) { 6011 secondCurrent = (View) secondCurrentParent; 6012 } else { 6013 secondCurrent = null; 6014 } 6015 } 6016 seen.clear(); 6017 } 6018 return null; 6019 } 6020 6021 void checkThread() { 6022 if (mThread != Thread.currentThread()) { 6023 throw new CalledFromWrongThreadException( 6024 "Only the original thread that created a view hierarchy can touch its views."); 6025 } 6026 } 6027 6028 @Override 6029 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6030 // ViewAncestor never intercepts touch event, so this can be a no-op 6031 } 6032 6033 @Override 6034 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6035 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6036 if (rectangle != null) { 6037 mTempRect.set(rectangle); 6038 mTempRect.offset(0, -mCurScrollY); 6039 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6040 try { 6041 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 6042 } catch (RemoteException re) { 6043 /* ignore */ 6044 } 6045 } 6046 return scrolled; 6047 } 6048 6049 @Override 6050 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6051 // Do nothing. 6052 } 6053 6054 void changeCanvasOpacity(boolean opaque) { 6055 // TODO(romainguy): recreate Canvas (software or hardware) to reflect the opacity change. 6056 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6057 } 6058 6059 class TakenSurfaceHolder extends BaseSurfaceHolder { 6060 @Override 6061 public boolean onAllowLockCanvas() { 6062 return mDrawingAllowed; 6063 } 6064 6065 @Override 6066 public void onRelayoutContainer() { 6067 // Not currently interesting -- from changing between fixed and layout size. 6068 } 6069 6070 @Override 6071 public void setFormat(int format) { 6072 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6073 } 6074 6075 @Override 6076 public void setType(int type) { 6077 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6078 } 6079 6080 @Override 6081 public void onUpdateSurface() { 6082 // We take care of format and type changes on our own. 6083 throw new IllegalStateException("Shouldn't be here"); 6084 } 6085 6086 @Override 6087 public boolean isCreating() { 6088 return mIsCreating; 6089 } 6090 6091 @Override 6092 public void setFixedSize(int width, int height) { 6093 throw new UnsupportedOperationException( 6094 "Currently only support sizing from layout"); 6095 } 6096 6097 @Override 6098 public void setKeepScreenOn(boolean screenOn) { 6099 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6100 } 6101 } 6102 6103 static class W extends IWindow.Stub { 6104 private final WeakReference<ViewRootImpl> mViewAncestor; 6105 private final IWindowSession mWindowSession; 6106 6107 W(ViewRootImpl viewAncestor) { 6108 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6109 mWindowSession = viewAncestor.mWindowSession; 6110 } 6111 6112 @Override 6113 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6114 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6115 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6116 if (viewAncestor != null) { 6117 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6118 visibleInsets, reportDraw, newConfig); 6119 } 6120 } 6121 6122 @Override 6123 public void moved(int newX, int newY) { 6124 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6125 if (viewAncestor != null) { 6126 viewAncestor.dispatchMoved(newX, newY); 6127 } 6128 } 6129 6130 @Override 6131 public void dispatchAppVisibility(boolean visible) { 6132 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6133 if (viewAncestor != null) { 6134 viewAncestor.dispatchAppVisibility(visible); 6135 } 6136 } 6137 6138 @Override 6139 public void dispatchScreenState(boolean on) { 6140 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6141 if (viewAncestor != null) { 6142 viewAncestor.dispatchScreenStateChange(on); 6143 } 6144 } 6145 6146 @Override 6147 public void dispatchGetNewSurface() { 6148 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6149 if (viewAncestor != null) { 6150 viewAncestor.dispatchGetNewSurface(); 6151 } 6152 } 6153 6154 @Override 6155 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6156 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6157 if (viewAncestor != null) { 6158 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6159 } 6160 } 6161 6162 private static int checkCallingPermission(String permission) { 6163 try { 6164 return ActivityManagerNative.getDefault().checkPermission( 6165 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6166 } catch (RemoteException e) { 6167 return PackageManager.PERMISSION_DENIED; 6168 } 6169 } 6170 6171 @Override 6172 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6173 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6174 if (viewAncestor != null) { 6175 final View view = viewAncestor.mView; 6176 if (view != null) { 6177 if (checkCallingPermission(Manifest.permission.DUMP) != 6178 PackageManager.PERMISSION_GRANTED) { 6179 throw new SecurityException("Insufficient permissions to invoke" 6180 + " executeCommand() from pid=" + Binder.getCallingPid() 6181 + ", uid=" + Binder.getCallingUid()); 6182 } 6183 6184 OutputStream clientStream = null; 6185 try { 6186 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6187 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6188 } catch (IOException e) { 6189 e.printStackTrace(); 6190 } finally { 6191 if (clientStream != null) { 6192 try { 6193 clientStream.close(); 6194 } catch (IOException e) { 6195 e.printStackTrace(); 6196 } 6197 } 6198 } 6199 } 6200 } 6201 } 6202 6203 @Override 6204 public void closeSystemDialogs(String reason) { 6205 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6206 if (viewAncestor != null) { 6207 viewAncestor.dispatchCloseSystemDialogs(reason); 6208 } 6209 } 6210 6211 @Override 6212 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6213 boolean sync) { 6214 if (sync) { 6215 try { 6216 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6217 } catch (RemoteException e) { 6218 } 6219 } 6220 } 6221 6222 @Override 6223 public void dispatchWallpaperCommand(String action, int x, int y, 6224 int z, Bundle extras, boolean sync) { 6225 if (sync) { 6226 try { 6227 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6228 } catch (RemoteException e) { 6229 } 6230 } 6231 } 6232 6233 /* Drag/drop */ 6234 @Override 6235 public void dispatchDragEvent(DragEvent event) { 6236 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6237 if (viewAncestor != null) { 6238 viewAncestor.dispatchDragEvent(event); 6239 } 6240 } 6241 6242 @Override 6243 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6244 int localValue, int localChanges) { 6245 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6246 if (viewAncestor != null) { 6247 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6248 localValue, localChanges); 6249 } 6250 } 6251 6252 @Override 6253 public void doneAnimating() { 6254 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6255 if (viewAncestor != null) { 6256 viewAncestor.dispatchDoneAnimating(); 6257 } 6258 } 6259 } 6260 6261 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6262 public CalledFromWrongThreadException(String msg) { 6263 super(msg); 6264 } 6265 } 6266 6267 static RunQueue getRunQueue() { 6268 RunQueue rq = sRunQueues.get(); 6269 if (rq != null) { 6270 return rq; 6271 } 6272 rq = new RunQueue(); 6273 sRunQueues.set(rq); 6274 return rq; 6275 } 6276 6277 /** 6278 * The run queue is used to enqueue pending work from Views when no Handler is 6279 * attached. The work is executed during the next call to performTraversals on 6280 * the thread. 6281 * @hide 6282 */ 6283 static final class RunQueue { 6284 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6285 6286 void post(Runnable action) { 6287 postDelayed(action, 0); 6288 } 6289 6290 void postDelayed(Runnable action, long delayMillis) { 6291 HandlerAction handlerAction = new HandlerAction(); 6292 handlerAction.action = action; 6293 handlerAction.delay = delayMillis; 6294 6295 synchronized (mActions) { 6296 mActions.add(handlerAction); 6297 } 6298 } 6299 6300 void removeCallbacks(Runnable action) { 6301 final HandlerAction handlerAction = new HandlerAction(); 6302 handlerAction.action = action; 6303 6304 synchronized (mActions) { 6305 final ArrayList<HandlerAction> actions = mActions; 6306 6307 while (actions.remove(handlerAction)) { 6308 // Keep going 6309 } 6310 } 6311 } 6312 6313 void executeActions(Handler handler) { 6314 synchronized (mActions) { 6315 final ArrayList<HandlerAction> actions = mActions; 6316 final int count = actions.size(); 6317 6318 for (int i = 0; i < count; i++) { 6319 final HandlerAction handlerAction = actions.get(i); 6320 handler.postDelayed(handlerAction.action, handlerAction.delay); 6321 } 6322 6323 actions.clear(); 6324 } 6325 } 6326 6327 private static class HandlerAction { 6328 Runnable action; 6329 long delay; 6330 6331 @Override 6332 public boolean equals(Object o) { 6333 if (this == o) return true; 6334 if (o == null || getClass() != o.getClass()) return false; 6335 6336 HandlerAction that = (HandlerAction) o; 6337 return !(action != null ? !action.equals(that.action) : that.action != null); 6338 6339 } 6340 6341 @Override 6342 public int hashCode() { 6343 int result = action != null ? action.hashCode() : 0; 6344 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6345 return result; 6346 } 6347 } 6348 } 6349 6350 /** 6351 * Class for managing the accessibility interaction connection 6352 * based on the global accessibility state. 6353 */ 6354 final class AccessibilityInteractionConnectionManager 6355 implements AccessibilityStateChangeListener { 6356 @Override 6357 public void onAccessibilityStateChanged(boolean enabled) { 6358 if (enabled) { 6359 ensureConnection(); 6360 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6361 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6362 View focusedView = mView.findFocus(); 6363 if (focusedView != null && focusedView != mView) { 6364 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6365 } 6366 } 6367 } else { 6368 ensureNoConnection(); 6369 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6370 } 6371 } 6372 6373 public void ensureConnection() { 6374 if (mAttachInfo != null) { 6375 final boolean registered = 6376 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6377 if (!registered) { 6378 mAttachInfo.mAccessibilityWindowId = 6379 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6380 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6381 } 6382 } 6383 } 6384 6385 public void ensureNoConnection() { 6386 final boolean registered = 6387 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6388 if (registered) { 6389 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6390 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6391 } 6392 } 6393 } 6394 6395 /** 6396 * This class is an interface this ViewAncestor provides to the 6397 * AccessibilityManagerService to the latter can interact with 6398 * the view hierarchy in this ViewAncestor. 6399 */ 6400 static final class AccessibilityInteractionConnection 6401 extends IAccessibilityInteractionConnection.Stub { 6402 private final WeakReference<ViewRootImpl> mViewRootImpl; 6403 6404 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6405 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6406 } 6407 6408 @Override 6409 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6410 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6411 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6412 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6413 if (viewRootImpl != null && viewRootImpl.mView != null) { 6414 viewRootImpl.getAccessibilityInteractionController() 6415 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6416 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6417 spec); 6418 } else { 6419 // We cannot make the call and notify the caller so it does not wait. 6420 try { 6421 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6422 } catch (RemoteException re) { 6423 /* best effort - ignore */ 6424 } 6425 } 6426 } 6427 6428 @Override 6429 public void performAccessibilityAction(long accessibilityNodeId, int action, 6430 Bundle arguments, int interactionId, 6431 IAccessibilityInteractionConnectionCallback callback, int flags, 6432 int interogatingPid, long interrogatingTid) { 6433 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6434 if (viewRootImpl != null && viewRootImpl.mView != null) { 6435 viewRootImpl.getAccessibilityInteractionController() 6436 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6437 interactionId, callback, flags, interogatingPid, interrogatingTid); 6438 } else { 6439 // We cannot make the call and notify the caller so it does not wait. 6440 try { 6441 callback.setPerformAccessibilityActionResult(false, interactionId); 6442 } catch (RemoteException re) { 6443 /* best effort - ignore */ 6444 } 6445 } 6446 } 6447 6448 @Override 6449 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6450 String viewId, int interactionId, 6451 IAccessibilityInteractionConnectionCallback callback, int flags, 6452 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6453 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6454 if (viewRootImpl != null && viewRootImpl.mView != null) { 6455 viewRootImpl.getAccessibilityInteractionController() 6456 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6457 viewId, interactionId, callback, flags, interrogatingPid, 6458 interrogatingTid, spec); 6459 } else { 6460 // We cannot make the call and notify the caller so it does not wait. 6461 try { 6462 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6463 } catch (RemoteException re) { 6464 /* best effort - ignore */ 6465 } 6466 } 6467 } 6468 6469 @Override 6470 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6471 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6472 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6473 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6474 if (viewRootImpl != null && viewRootImpl.mView != null) { 6475 viewRootImpl.getAccessibilityInteractionController() 6476 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6477 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6478 spec); 6479 } else { 6480 // We cannot make the call and notify the caller so it does not wait. 6481 try { 6482 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6483 } catch (RemoteException re) { 6484 /* best effort - ignore */ 6485 } 6486 } 6487 } 6488 6489 @Override 6490 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6491 IAccessibilityInteractionConnectionCallback callback, int flags, 6492 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6493 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6494 if (viewRootImpl != null && viewRootImpl.mView != null) { 6495 viewRootImpl.getAccessibilityInteractionController() 6496 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6497 flags, interrogatingPid, interrogatingTid, spec); 6498 } else { 6499 // We cannot make the call and notify the caller so it does not wait. 6500 try { 6501 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6502 } catch (RemoteException re) { 6503 /* best effort - ignore */ 6504 } 6505 } 6506 } 6507 6508 @Override 6509 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6510 IAccessibilityInteractionConnectionCallback callback, int flags, 6511 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6512 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6513 if (viewRootImpl != null && viewRootImpl.mView != null) { 6514 viewRootImpl.getAccessibilityInteractionController() 6515 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6516 callback, flags, interrogatingPid, interrogatingTid, spec); 6517 } else { 6518 // We cannot make the call and notify the caller so it does not wait. 6519 try { 6520 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6521 } catch (RemoteException re) { 6522 /* best effort - ignore */ 6523 } 6524 } 6525 } 6526 } 6527 6528 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6529 private int mChangeTypes = 0; 6530 6531 public View mSource; 6532 public long mLastEventTimeMillis; 6533 6534 @Override 6535 public void run() { 6536 // The accessibility may be turned off while we were waiting so check again. 6537 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6538 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6539 AccessibilityEvent event = AccessibilityEvent.obtain(); 6540 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6541 event.setContentChangeTypes(mChangeTypes); 6542 mSource.sendAccessibilityEventUnchecked(event); 6543 } else { 6544 mLastEventTimeMillis = 0; 6545 } 6546 // In any case reset to initial state. 6547 mSource.resetSubtreeAccessibilityStateChanged(); 6548 mSource = null; 6549 mChangeTypes = 0; 6550 } 6551 6552 public void runOrPost(View source, int changeType) { 6553 if (mSource != null) { 6554 // If there is no common predecessor, then mSource points to 6555 // a removed view, hence in this case always prefer the source. 6556 View predecessor = getCommonPredecessor(mSource, source); 6557 mSource = (predecessor != null) ? predecessor : source; 6558 mChangeTypes |= changeType; 6559 return; 6560 } 6561 mSource = source; 6562 mChangeTypes = changeType; 6563 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6564 final long minEventIntevalMillis = 6565 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6566 if (timeSinceLastMillis >= minEventIntevalMillis) { 6567 mSource.removeCallbacks(this); 6568 run(); 6569 } else { 6570 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6571 } 6572 } 6573 } 6574} 6575