ViewRootImpl.java revision 330314c6fb7c178c0f0da65d6aa8c9e7d3004568
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.animation.ValueAnimator; 22import android.app.ActivityManagerNative; 23import android.content.ClipDescription; 24import android.content.ComponentCallbacks; 25import android.content.ComponentCallbacks2; 26import android.content.Context; 27import android.content.pm.ApplicationInfo; 28import android.content.pm.PackageManager; 29import android.content.res.CompatibilityInfo; 30import android.content.res.Configuration; 31import android.content.res.Resources; 32import android.graphics.Canvas; 33import android.graphics.Paint; 34import android.graphics.PixelFormat; 35import android.graphics.Point; 36import android.graphics.PointF; 37import android.graphics.PorterDuff; 38import android.graphics.Rect; 39import android.graphics.Region; 40import android.graphics.drawable.Drawable; 41import android.media.AudioManager; 42import android.os.Binder; 43import android.os.Bundle; 44import android.os.Debug; 45import android.os.Handler; 46import android.os.LatencyTimer; 47import android.os.Looper; 48import android.os.Message; 49import android.os.ParcelFileDescriptor; 50import android.os.PowerManager; 51import android.os.Process; 52import android.os.RemoteException; 53import android.os.SystemClock; 54import android.os.SystemProperties; 55import android.os.Trace; 56import android.util.AndroidRuntimeException; 57import android.util.DisplayMetrics; 58import android.util.EventLog; 59import android.util.Log; 60import android.util.Slog; 61import android.util.TypedValue; 62import android.view.View.AttachInfo; 63import android.view.View.MeasureSpec; 64import android.view.accessibility.AccessibilityEvent; 65import android.view.accessibility.AccessibilityManager; 66import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 67import android.view.accessibility.AccessibilityNodeInfo; 68import android.view.accessibility.AccessibilityNodeProvider; 69import android.view.accessibility.IAccessibilityInteractionConnection; 70import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 71import android.view.animation.AccelerateDecelerateInterpolator; 72import android.view.animation.Interpolator; 73import android.view.inputmethod.InputConnection; 74import android.view.inputmethod.InputMethodManager; 75import android.widget.Scroller; 76 77import com.android.internal.R; 78import com.android.internal.policy.PolicyManager; 79import com.android.internal.view.BaseSurfaceHolder; 80import com.android.internal.view.IInputMethodCallback; 81import com.android.internal.view.IInputMethodSession; 82import com.android.internal.view.RootViewSurfaceTaker; 83 84import java.io.IOException; 85import java.io.OutputStream; 86import java.lang.ref.WeakReference; 87import java.util.ArrayList; 88import java.util.HashSet; 89 90/** 91 * The top of a view hierarchy, implementing the needed protocol between View 92 * and the WindowManager. This is for the most part an internal implementation 93 * detail of {@link WindowManagerImpl}. 94 * 95 * {@hide} 96 */ 97@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 98public final class ViewRootImpl implements ViewParent, 99 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 100 private static final String TAG = "ViewRootImpl"; 101 private static final boolean DBG = false; 102 private static final boolean LOCAL_LOGV = false; 103 /** @noinspection PointlessBooleanExpression*/ 104 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 105 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 106 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 107 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 108 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 109 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 110 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 111 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 112 private static final boolean DEBUG_FPS = false; 113 114 private static final boolean USE_RENDER_THREAD = false; 115 116 /** 117 * Set this system property to true to force the view hierarchy to render 118 * at 60 Hz. This can be used to measure the potential framerate. 119 */ 120 private static final String PROPERTY_PROFILE_RENDERING = "viewancestor.profile_rendering"; 121 122 private static final boolean MEASURE_LATENCY = false; 123 private static LatencyTimer lt; 124 125 /** 126 * Maximum time we allow the user to roll the trackball enough to generate 127 * a key event, before resetting the counters. 128 */ 129 static final int MAX_TRACKBALL_DELAY = 250; 130 131 static IWindowSession sWindowSession; 132 133 static final Object mStaticInit = new Object(); 134 static boolean mInitialized = false; 135 136 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 137 138 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 139 static boolean sFirstDrawComplete = false; 140 141 static final ArrayList<ComponentCallbacks> sConfigCallbacks 142 = new ArrayList<ComponentCallbacks>(); 143 144 private static boolean sUseRenderThread = false; 145 private static boolean sRenderThreadQueried = false; 146 private static final Object[] sRenderThreadQueryLock = new Object[0]; 147 148 long mLastTrackballTime = 0; 149 final TrackballAxis mTrackballAxisX = new TrackballAxis(); 150 final TrackballAxis mTrackballAxisY = new TrackballAxis(); 151 152 int mLastJoystickXDirection; 153 int mLastJoystickYDirection; 154 int mLastJoystickXKeyCode; 155 int mLastJoystickYKeyCode; 156 157 final int[] mTmpLocation = new int[2]; 158 159 final TypedValue mTmpValue = new TypedValue(); 160 161 final InputMethodCallback mInputMethodCallback; 162 final Thread mThread; 163 164 final WindowLeaked mLocation; 165 166 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 167 168 final W mWindow; 169 170 final int mTargetSdkVersion; 171 172 int mSeq; 173 174 View mView; 175 View mFocusedView; 176 View mRealFocusedView; // this is not set to null in touch mode 177 View mOldFocusedView; 178 179 View mAccessibilityFocusedHost; 180 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 181 182 int mViewVisibility; 183 boolean mAppVisible = true; 184 int mOrigWindowType = -1; 185 186 // Set to true if the owner of this window is in the stopped state, 187 // so the window should no longer be active. 188 boolean mStopped = false; 189 190 boolean mLastInCompatMode = false; 191 192 SurfaceHolder.Callback2 mSurfaceHolderCallback; 193 BaseSurfaceHolder mSurfaceHolder; 194 boolean mIsCreating; 195 boolean mDrawingAllowed; 196 197 final Region mTransparentRegion; 198 final Region mPreviousTransparentRegion; 199 200 int mWidth; 201 int mHeight; 202 Rect mDirty; 203 final Rect mCurrentDirty = new Rect(); 204 final Rect mPreviousDirty = new Rect(); 205 boolean mIsAnimating; 206 207 CompatibilityInfo.Translator mTranslator; 208 209 final View.AttachInfo mAttachInfo; 210 InputChannel mInputChannel; 211 InputQueue.Callback mInputQueueCallback; 212 InputQueue mInputQueue; 213 FallbackEventHandler mFallbackEventHandler; 214 Choreographer mChoreographer; 215 216 final Rect mTempRect; // used in the transaction to not thrash the heap. 217 final Rect mVisRect; // used to retrieve visible rect of focused view. 218 219 boolean mTraversalScheduled; 220 int mTraversalBarrier; 221 long mLastTraversalFinishedTimeNanos; 222 long mLastDrawFinishedTimeNanos; 223 boolean mWillDrawSoon; 224 boolean mFitSystemWindowsRequested; 225 boolean mLayoutRequested; 226 boolean mFirst; 227 boolean mReportNextDraw; 228 boolean mFullRedrawNeeded; 229 boolean mNewSurfaceNeeded; 230 boolean mHasHadWindowFocus; 231 boolean mLastWasImTarget; 232 int mLastSystemUiVisibility; 233 234 // Pool of queued input events. 235 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 236 private QueuedInputEvent mQueuedInputEventPool; 237 private int mQueuedInputEventPoolSize; 238 239 // Input event queue. 240 QueuedInputEvent mFirstPendingInputEvent; 241 QueuedInputEvent mCurrentInputEvent; 242 boolean mProcessInputEventsScheduled; 243 244 boolean mWindowAttributesChanged = false; 245 int mWindowAttributesChangesFlag = 0; 246 247 // These can be accessed by any thread, must be protected with a lock. 248 // Surface can never be reassigned or cleared (use Surface.clear()). 249 private final Surface mSurface = new Surface(); 250 251 boolean mAdded; 252 boolean mAddedTouchMode; 253 254 CompatibilityInfoHolder mCompatibilityInfo; 255 256 /*package*/ int mAddNesting; 257 258 // These are accessed by multiple threads. 259 final Rect mWinFrame; // frame given by window manager. 260 261 final Rect mPendingVisibleInsets = new Rect(); 262 final Rect mPendingContentInsets = new Rect(); 263 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 264 = new ViewTreeObserver.InternalInsetsInfo(); 265 266 final Rect mFitSystemWindowsInsets = new Rect(); 267 268 final Configuration mLastConfiguration = new Configuration(); 269 final Configuration mPendingConfiguration = new Configuration(); 270 271 class ResizedInfo { 272 Rect coveredInsets; 273 Rect visibleInsets; 274 Configuration newConfig; 275 } 276 277 boolean mScrollMayChange; 278 int mSoftInputMode; 279 View mLastScrolledFocus; 280 int mScrollY; 281 int mCurScrollY; 282 Scroller mScroller; 283 HardwareLayer mResizeBuffer; 284 long mResizeBufferStartTime; 285 int mResizeBufferDuration; 286 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 287 private ArrayList<LayoutTransition> mPendingTransitions; 288 289 final ViewConfiguration mViewConfiguration; 290 291 /* Drag/drop */ 292 ClipDescription mDragDescription; 293 View mCurrentDragView; 294 volatile Object mLocalDragState; 295 final PointF mDragPoint = new PointF(); 296 final PointF mLastTouchPoint = new PointF(); 297 298 private boolean mProfileRendering; 299 private Thread mRenderProfiler; 300 private volatile boolean mRenderProfilingEnabled; 301 302 // Variables to track frames per second, enabled via DEBUG_FPS flag 303 private long mFpsStartTime = -1; 304 private long mFpsPrevTime = -1; 305 private int mFpsNumFrames; 306 307 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(24); 308 309 /** 310 * see {@link #playSoundEffect(int)} 311 */ 312 AudioManager mAudioManager; 313 314 final AccessibilityManager mAccessibilityManager; 315 316 AccessibilityInteractionController mAccessibilityInteractionController; 317 318 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 319 320 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 321 322 HashSet<View> mTempHashSet; 323 324 private final int mDensity; 325 326 final KeyCharacterMap.FallbackAction mFallbackAction = new KeyCharacterMap.FallbackAction(); 327 328 /** 329 * Consistency verifier for debugging purposes. 330 */ 331 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 332 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 333 new InputEventConsistencyVerifier(this, 0) : null; 334 335 public static IWindowSession getWindowSession(Looper mainLooper) { 336 synchronized (mStaticInit) { 337 if (!mInitialized) { 338 try { 339 InputMethodManager imm = InputMethodManager.getInstance(mainLooper); 340 IWindowManager windowManager = Display.getWindowManager(); 341 sWindowSession = windowManager.openSession( 342 imm.getClient(), imm.getInputContext()); 343 float animatorScale = windowManager.getAnimationScale(2); 344 ValueAnimator.setDurationScale(animatorScale); 345 mInitialized = true; 346 } catch (RemoteException e) { 347 } 348 } 349 return sWindowSession; 350 } 351 } 352 353 static final class SystemUiVisibilityInfo { 354 int seq; 355 int globalVisibility; 356 int localValue; 357 int localChanges; 358 } 359 360 public ViewRootImpl(Context context) { 361 super(); 362 363 if (MEASURE_LATENCY) { 364 if (lt == null) { 365 lt = new LatencyTimer(100, 1000); 366 } 367 } 368 369 // Initialize the statics when this class is first instantiated. This is 370 // done here instead of in the static block because Zygote does not 371 // allow the spawning of threads. 372 getWindowSession(context.getMainLooper()); 373 374 mThread = Thread.currentThread(); 375 mLocation = new WindowLeaked(null); 376 mLocation.fillInStackTrace(); 377 mWidth = -1; 378 mHeight = -1; 379 mDirty = new Rect(); 380 mTempRect = new Rect(); 381 mVisRect = new Rect(); 382 mWinFrame = new Rect(); 383 mWindow = new W(this); 384 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 385 mInputMethodCallback = new InputMethodCallback(this); 386 mViewVisibility = View.GONE; 387 mTransparentRegion = new Region(); 388 mPreviousTransparentRegion = new Region(); 389 mFirst = true; // true for the first time the view is added 390 mAdded = false; 391 mAccessibilityManager = AccessibilityManager.getInstance(context); 392 mAccessibilityInteractionConnectionManager = 393 new AccessibilityInteractionConnectionManager(); 394 mAccessibilityManager.addAccessibilityStateChangeListener( 395 mAccessibilityInteractionConnectionManager); 396 mAttachInfo = new View.AttachInfo(sWindowSession, mWindow, this, mHandler, this); 397 mViewConfiguration = ViewConfiguration.get(context); 398 mDensity = context.getResources().getDisplayMetrics().densityDpi; 399 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 400 mProfileRendering = Boolean.parseBoolean( 401 SystemProperties.get(PROPERTY_PROFILE_RENDERING, "false")); 402 mChoreographer = Choreographer.getInstance(); 403 404 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 405 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 406 } 407 408 /** 409 * @return True if the application requests the use of a separate render thread, 410 * false otherwise 411 */ 412 private static boolean isRenderThreadRequested(Context context) { 413 if (USE_RENDER_THREAD) { 414 synchronized (sRenderThreadQueryLock) { 415 if (!sRenderThreadQueried) { 416 final PackageManager packageManager = context.getPackageManager(); 417 final String packageName = context.getApplicationInfo().packageName; 418 try { 419 ApplicationInfo applicationInfo = packageManager.getApplicationInfo(packageName, 420 PackageManager.GET_META_DATA); 421 if (applicationInfo.metaData != null) { 422 sUseRenderThread = applicationInfo.metaData.getBoolean( 423 "android.graphics.renderThread", false); 424 } 425 } catch (PackageManager.NameNotFoundException e) { 426 } finally { 427 sRenderThreadQueried = true; 428 } 429 } 430 return sUseRenderThread; 431 } 432 } else { 433 return false; 434 } 435 } 436 437 public static void addFirstDrawHandler(Runnable callback) { 438 synchronized (sFirstDrawHandlers) { 439 if (!sFirstDrawComplete) { 440 sFirstDrawHandlers.add(callback); 441 } 442 } 443 } 444 445 public static void addConfigCallback(ComponentCallbacks callback) { 446 synchronized (sConfigCallbacks) { 447 sConfigCallbacks.add(callback); 448 } 449 } 450 451 // FIXME for perf testing only 452 private boolean mProfile = false; 453 454 /** 455 * Call this to profile the next traversal call. 456 * FIXME for perf testing only. Remove eventually 457 */ 458 public void profile() { 459 mProfile = true; 460 } 461 462 /** 463 * Indicates whether we are in touch mode. Calling this method triggers an IPC 464 * call and should be avoided whenever possible. 465 * 466 * @return True, if the device is in touch mode, false otherwise. 467 * 468 * @hide 469 */ 470 static boolean isInTouchMode() { 471 if (mInitialized) { 472 try { 473 return sWindowSession.getInTouchMode(); 474 } catch (RemoteException e) { 475 } 476 } 477 return false; 478 } 479 480 /** 481 * We have one child 482 */ 483 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 484 synchronized (this) { 485 if (mView == null) { 486 mView = view; 487 mFallbackEventHandler.setView(view); 488 mWindowAttributes.copyFrom(attrs); 489 attrs = mWindowAttributes; 490 491 if (view instanceof RootViewSurfaceTaker) { 492 mSurfaceHolderCallback = 493 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 494 if (mSurfaceHolderCallback != null) { 495 mSurfaceHolder = new TakenSurfaceHolder(); 496 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 497 } 498 } 499 500 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 501 mTranslator = compatibilityInfo.getTranslator(); 502 503 // If the application owns the surface, don't enable hardware acceleration 504 if (mSurfaceHolder == null) { 505 enableHardwareAcceleration(mView.getContext(), attrs); 506 } 507 508 boolean restore = false; 509 if (mTranslator != null) { 510 mSurface.setCompatibilityTranslator(mTranslator); 511 restore = true; 512 attrs.backup(); 513 mTranslator.translateWindowLayout(attrs); 514 } 515 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 516 517 if (!compatibilityInfo.supportsScreen()) { 518 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 519 mLastInCompatMode = true; 520 } 521 522 mSoftInputMode = attrs.softInputMode; 523 mWindowAttributesChanged = true; 524 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 525 mAttachInfo.mRootView = view; 526 mAttachInfo.mScalingRequired = mTranslator != null; 527 mAttachInfo.mApplicationScale = 528 mTranslator == null ? 1.0f : mTranslator.applicationScale; 529 if (panelParentView != null) { 530 mAttachInfo.mPanelParentWindowToken 531 = panelParentView.getApplicationWindowToken(); 532 } 533 mAdded = true; 534 int res; /* = WindowManagerImpl.ADD_OKAY; */ 535 536 // Schedule the first layout -before- adding to the window 537 // manager, to make sure we do the relayout before receiving 538 // any other events from the system. 539 requestLayout(); 540 if ((mWindowAttributes.inputFeatures 541 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 542 mInputChannel = new InputChannel(); 543 } 544 try { 545 mOrigWindowType = mWindowAttributes.type; 546 mAttachInfo.mRecomputeGlobalAttributes = true; 547 collectViewAttributes(); 548 res = sWindowSession.add(mWindow, mSeq, mWindowAttributes, 549 getHostVisibility(), mAttachInfo.mContentInsets, 550 mInputChannel); 551 } catch (RemoteException e) { 552 mAdded = false; 553 mView = null; 554 mAttachInfo.mRootView = null; 555 mInputChannel = null; 556 mFallbackEventHandler.setView(null); 557 unscheduleTraversals(); 558 throw new RuntimeException("Adding window failed", e); 559 } finally { 560 if (restore) { 561 attrs.restore(); 562 } 563 } 564 565 if (mTranslator != null) { 566 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 567 } 568 mPendingContentInsets.set(mAttachInfo.mContentInsets); 569 mPendingVisibleInsets.set(0, 0, 0, 0); 570 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 571 if (res < WindowManagerImpl.ADD_OKAY) { 572 mView = null; 573 mAttachInfo.mRootView = null; 574 mAdded = false; 575 mFallbackEventHandler.setView(null); 576 unscheduleTraversals(); 577 switch (res) { 578 case WindowManagerImpl.ADD_BAD_APP_TOKEN: 579 case WindowManagerImpl.ADD_BAD_SUBWINDOW_TOKEN: 580 throw new WindowManagerImpl.BadTokenException( 581 "Unable to add window -- token " + attrs.token 582 + " is not valid; is your activity running?"); 583 case WindowManagerImpl.ADD_NOT_APP_TOKEN: 584 throw new WindowManagerImpl.BadTokenException( 585 "Unable to add window -- token " + attrs.token 586 + " is not for an application"); 587 case WindowManagerImpl.ADD_APP_EXITING: 588 throw new WindowManagerImpl.BadTokenException( 589 "Unable to add window -- app for token " + attrs.token 590 + " is exiting"); 591 case WindowManagerImpl.ADD_DUPLICATE_ADD: 592 throw new WindowManagerImpl.BadTokenException( 593 "Unable to add window -- window " + mWindow 594 + " has already been added"); 595 case WindowManagerImpl.ADD_STARTING_NOT_NEEDED: 596 // Silently ignore -- we would have just removed it 597 // right away, anyway. 598 return; 599 case WindowManagerImpl.ADD_MULTIPLE_SINGLETON: 600 throw new WindowManagerImpl.BadTokenException( 601 "Unable to add window " + mWindow + 602 " -- another window of this type already exists"); 603 case WindowManagerImpl.ADD_PERMISSION_DENIED: 604 throw new WindowManagerImpl.BadTokenException( 605 "Unable to add window " + mWindow + 606 " -- permission denied for this window type"); 607 } 608 throw new RuntimeException( 609 "Unable to add window -- unknown error code " + res); 610 } 611 612 if (view instanceof RootViewSurfaceTaker) { 613 mInputQueueCallback = 614 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 615 } 616 if (mInputChannel != null) { 617 if (mInputQueueCallback != null) { 618 mInputQueue = new InputQueue(mInputChannel); 619 mInputQueueCallback.onInputQueueCreated(mInputQueue); 620 } else { 621 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 622 Looper.myLooper()); 623 } 624 } 625 626 view.assignParent(this); 627 mAddedTouchMode = (res&WindowManagerImpl.ADD_FLAG_IN_TOUCH_MODE) != 0; 628 mAppVisible = (res&WindowManagerImpl.ADD_FLAG_APP_VISIBLE) != 0; 629 630 if (mAccessibilityManager.isEnabled()) { 631 mAccessibilityInteractionConnectionManager.ensureConnection(); 632 } 633 634 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 635 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 636 } 637 } 638 } 639 } 640 641 void destroyHardwareResources() { 642 if (mAttachInfo.mHardwareRenderer != null) { 643 if (mAttachInfo.mHardwareRenderer.isEnabled()) { 644 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 645 } 646 mAttachInfo.mHardwareRenderer.destroy(false); 647 } 648 } 649 650 void terminateHardwareResources() { 651 if (mAttachInfo.mHardwareRenderer != null) { 652 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 653 mAttachInfo.mHardwareRenderer.destroy(false); 654 } 655 } 656 657 void destroyHardwareLayers() { 658 if (mThread != Thread.currentThread()) { 659 if (mAttachInfo.mHardwareRenderer != null && 660 mAttachInfo.mHardwareRenderer.isEnabled()) { 661 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 662 } 663 } else { 664 if (mAttachInfo.mHardwareRenderer != null && 665 mAttachInfo.mHardwareRenderer.isEnabled()) { 666 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 667 } 668 } 669 } 670 671 public void attachFunctor(int functor) { 672 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 673 mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 674 } 675 } 676 677 public void detachFunctor(int functor) { 678 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 679 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 680 } 681 } 682 683 private void enableHardwareAcceleration(Context context, WindowManager.LayoutParams attrs) { 684 mAttachInfo.mHardwareAccelerated = false; 685 mAttachInfo.mHardwareAccelerationRequested = false; 686 687 // Don't enable hardware acceleration when the application is in compatibility mode 688 if (mTranslator != null) return; 689 690 // Try to enable hardware acceleration if requested 691 final boolean hardwareAccelerated = 692 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 693 694 if (hardwareAccelerated) { 695 if (!HardwareRenderer.isAvailable()) { 696 return; 697 } 698 699 // Persistent processes (including the system) should not do 700 // accelerated rendering on low-end devices. In that case, 701 // sRendererDisabled will be set. In addition, the system process 702 // itself should never do accelerated rendering. In that case, both 703 // sRendererDisabled and sSystemRendererDisabled are set. When 704 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 705 // can be used by code on the system process to escape that and enable 706 // HW accelerated drawing. (This is basically for the lock screen.) 707 708 final boolean fakeHwAccelerated = (attrs.privateFlags & 709 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 710 final boolean forceHwAccelerated = (attrs.privateFlags & 711 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 712 713 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 714 && forceHwAccelerated)) { 715 // Don't enable hardware acceleration when we're not on the main thread 716 if (!HardwareRenderer.sSystemRendererDisabled && 717 Looper.getMainLooper() != Looper.myLooper()) { 718 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 719 + "acceleration outside of the main thread, aborting"); 720 return; 721 } 722 723 final boolean renderThread = isRenderThreadRequested(context); 724 if (renderThread) { 725 Log.i(HardwareRenderer.LOG_TAG, "Render threat initiated"); 726 } 727 728 if (mAttachInfo.mHardwareRenderer != null) { 729 mAttachInfo.mHardwareRenderer.destroy(true); 730 } 731 732 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 733 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 734 mAttachInfo.mHardwareAccelerated = mAttachInfo.mHardwareAccelerationRequested 735 = mAttachInfo.mHardwareRenderer != null; 736 737 } else if (fakeHwAccelerated) { 738 // The window had wanted to use hardware acceleration, but this 739 // is not allowed in its process. By setting this flag, it can 740 // still render as if it was accelerated. This is basically for 741 // the preview windows the window manager shows for launching 742 // applications, so they will look more like the app being launched. 743 mAttachInfo.mHardwareAccelerationRequested = true; 744 } 745 } 746 } 747 748 public View getView() { 749 return mView; 750 } 751 752 final WindowLeaked getLocation() { 753 return mLocation; 754 } 755 756 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 757 synchronized (this) { 758 int oldSoftInputMode = mWindowAttributes.softInputMode; 759 // preserve compatible window flag if exists. 760 int compatibleWindowFlag = 761 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 762 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 763 mWindowAttributes.flags |= compatibleWindowFlag; 764 765 if (newView) { 766 mSoftInputMode = attrs.softInputMode; 767 requestLayout(); 768 } 769 // Don't lose the mode we last auto-computed. 770 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 771 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 772 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 773 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 774 | (oldSoftInputMode 775 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 776 } 777 mWindowAttributesChanged = true; 778 scheduleTraversals(); 779 } 780 } 781 782 void handleAppVisibility(boolean visible) { 783 if (mAppVisible != visible) { 784 mAppVisible = visible; 785 scheduleTraversals(); 786 } 787 } 788 789 void handleGetNewSurface() { 790 mNewSurfaceNeeded = true; 791 mFullRedrawNeeded = true; 792 scheduleTraversals(); 793 } 794 795 void handleScreenStateChange(boolean on) { 796 if (on != mAttachInfo.mScreenOn) { 797 mAttachInfo.mScreenOn = on; 798 if (mView != null) { 799 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 800 } 801 if (on) { 802 mFullRedrawNeeded = true; 803 scheduleTraversals(); 804 } 805 } 806 } 807 808 /** 809 * {@inheritDoc} 810 */ 811 public void requestFitSystemWindows() { 812 checkThread(); 813 mFitSystemWindowsRequested = true; 814 scheduleTraversals(); 815 } 816 817 /** 818 * {@inheritDoc} 819 */ 820 public void requestLayout() { 821 checkThread(); 822 mLayoutRequested = true; 823 scheduleTraversals(); 824 } 825 826 /** 827 * {@inheritDoc} 828 */ 829 public boolean isLayoutRequested() { 830 return mLayoutRequested; 831 } 832 833 void invalidate() { 834 mDirty.set(0, 0, mWidth, mHeight); 835 scheduleTraversals(); 836 } 837 838 public void invalidateChild(View child, Rect dirty) { 839 invalidateChildInParent(null, dirty); 840 } 841 842 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 843 checkThread(); 844 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 845 846 if (dirty == null) { 847 invalidate(); 848 return null; 849 } 850 851 if (mCurScrollY != 0 || mTranslator != null) { 852 mTempRect.set(dirty); 853 dirty = mTempRect; 854 if (mCurScrollY != 0) { 855 dirty.offset(0, -mCurScrollY); 856 } 857 if (mTranslator != null) { 858 mTranslator.translateRectInAppWindowToScreen(dirty); 859 } 860 if (mAttachInfo.mScalingRequired) { 861 dirty.inset(-1, -1); 862 } 863 } 864 865 final Rect localDirty = mDirty; 866 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 867 mAttachInfo.mSetIgnoreDirtyState = true; 868 mAttachInfo.mIgnoreDirtyState = true; 869 } 870 871 // Add the new dirty rect to the current one 872 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 873 // Intersect with the bounds of the window to skip 874 // updates that lie outside of the visible region 875 final float appScale = mAttachInfo.mApplicationScale; 876 localDirty.intersect(0, 0, 877 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 878 879 if (!mWillDrawSoon) { 880 scheduleTraversals(); 881 } 882 883 return null; 884 } 885 886 void setStopped(boolean stopped) { 887 if (mStopped != stopped) { 888 mStopped = stopped; 889 if (!stopped) { 890 scheduleTraversals(); 891 } 892 } 893 } 894 895 public ViewParent getParent() { 896 return null; 897 } 898 899 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 900 if (child != mView) { 901 throw new RuntimeException("child is not mine, honest!"); 902 } 903 // Note: don't apply scroll offset, because we want to know its 904 // visibility in the virtual canvas being given to the view hierarchy. 905 return r.intersect(0, 0, mWidth, mHeight); 906 } 907 908 public void bringChildToFront(View child) { 909 } 910 911 int getHostVisibility() { 912 return mAppVisible ? mView.getVisibility() : View.GONE; 913 } 914 915 void disposeResizeBuffer() { 916 if (mResizeBuffer != null) { 917 mResizeBuffer.destroy(); 918 mResizeBuffer = null; 919 } 920 } 921 922 /** 923 * Add LayoutTransition to the list of transitions to be started in the next traversal. 924 * This list will be cleared after the transitions on the list are start()'ed. These 925 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 926 * happens during the layout phase of traversal, which we want to complete before any of the 927 * animations are started (because those animations may side-effect properties that layout 928 * depends upon, like the bounding rectangles of the affected views). So we add the transition 929 * to the list and it is started just prior to starting the drawing phase of traversal. 930 * 931 * @param transition The LayoutTransition to be started on the next traversal. 932 * 933 * @hide 934 */ 935 public void requestTransitionStart(LayoutTransition transition) { 936 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 937 if (mPendingTransitions == null) { 938 mPendingTransitions = new ArrayList<LayoutTransition>(); 939 } 940 mPendingTransitions.add(transition); 941 } 942 } 943 944 void scheduleTraversals() { 945 if (!mTraversalScheduled) { 946 mTraversalScheduled = true; 947 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 948 mChoreographer.postCallback( 949 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 950 scheduleConsumeBatchedInput(); 951 } 952 } 953 954 void unscheduleTraversals() { 955 if (mTraversalScheduled) { 956 mTraversalScheduled = false; 957 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 958 mChoreographer.removeCallbacks( 959 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 960 } 961 } 962 963 void doTraversal() { 964 if (mTraversalScheduled) { 965 mTraversalScheduled = false; 966 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 967 968 if (mProfile) { 969 Debug.startMethodTracing("ViewAncestor"); 970 } 971 972 final long traversalStartTime; 973 if (ViewDebug.DEBUG_LATENCY) { 974 traversalStartTime = System.nanoTime(); 975 if (mLastTraversalFinishedTimeNanos != 0) { 976 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting performTraversals(); it has been " 977 + ((traversalStartTime - mLastTraversalFinishedTimeNanos) * 0.000001f) 978 + "ms since the last traversals finished."); 979 } else { 980 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting performTraversals()."); 981 } 982 } 983 984 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 985 try { 986 performTraversals(); 987 } finally { 988 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 989 } 990 991 if (ViewDebug.DEBUG_LATENCY) { 992 long now = System.nanoTime(); 993 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "performTraversals() took " 994 + ((now - traversalStartTime) * 0.000001f) 995 + "ms."); 996 mLastTraversalFinishedTimeNanos = now; 997 } 998 999 if (mProfile) { 1000 Debug.stopMethodTracing(); 1001 mProfile = false; 1002 } 1003 } 1004 } 1005 1006 private boolean collectViewAttributes() { 1007 final View.AttachInfo attachInfo = mAttachInfo; 1008 if (attachInfo.mRecomputeGlobalAttributes) { 1009 //Log.i(TAG, "Computing view hierarchy attributes!"); 1010 attachInfo.mRecomputeGlobalAttributes = false; 1011 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1012 int oldVis = attachInfo.mSystemUiVisibility; 1013 boolean oldHasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1014 attachInfo.mKeepScreenOn = false; 1015 attachInfo.mSystemUiVisibility = 0; 1016 attachInfo.mHasSystemUiListeners = false; 1017 mView.dispatchCollectViewAttributes(attachInfo, 0); 1018 if (attachInfo.mKeepScreenOn != oldScreenOn 1019 || attachInfo.mSystemUiVisibility != oldVis 1020 || attachInfo.mHasSystemUiListeners != oldHasSystemUiListeners) { 1021 WindowManager.LayoutParams params = mWindowAttributes; 1022 if (attachInfo.mKeepScreenOn) { 1023 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1024 } 1025 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1026 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1027 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1028 return true; 1029 } 1030 } 1031 return false; 1032 } 1033 1034 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1035 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1036 int childWidthMeasureSpec; 1037 int childHeightMeasureSpec; 1038 boolean windowSizeMayChange = false; 1039 1040 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1041 "Measuring " + host + " in display " + desiredWindowWidth 1042 + "x" + desiredWindowHeight + "..."); 1043 1044 boolean goodMeasure = false; 1045 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1046 // On large screens, we don't want to allow dialogs to just 1047 // stretch to fill the entire width of the screen to display 1048 // one line of text. First try doing the layout at a smaller 1049 // size to see if it will fit. 1050 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1051 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1052 int baseSize = 0; 1053 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1054 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1055 } 1056 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1057 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1058 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1059 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1060 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1061 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1062 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1063 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1064 goodMeasure = true; 1065 } else { 1066 // Didn't fit in that size... try expanding a bit. 1067 baseSize = (baseSize+desiredWindowWidth)/2; 1068 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1069 + baseSize); 1070 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1071 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1072 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1073 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1074 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1075 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1076 goodMeasure = true; 1077 } 1078 } 1079 } 1080 } 1081 1082 if (!goodMeasure) { 1083 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1084 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1085 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1086 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1087 windowSizeMayChange = true; 1088 } 1089 } 1090 1091 if (DBG) { 1092 System.out.println("======================================"); 1093 System.out.println("performTraversals -- after measure"); 1094 host.debug(); 1095 } 1096 1097 return windowSizeMayChange; 1098 } 1099 1100 private void performTraversals() { 1101 // cache mView since it is used so much below... 1102 final View host = mView; 1103 1104 if (DBG) { 1105 System.out.println("======================================"); 1106 System.out.println("performTraversals"); 1107 host.debug(); 1108 } 1109 1110 if (host == null || !mAdded) 1111 return; 1112 1113 mWillDrawSoon = true; 1114 boolean windowSizeMayChange = false; 1115 boolean newSurface = false; 1116 boolean surfaceChanged = false; 1117 WindowManager.LayoutParams lp = mWindowAttributes; 1118 1119 int desiredWindowWidth; 1120 int desiredWindowHeight; 1121 1122 final View.AttachInfo attachInfo = mAttachInfo; 1123 1124 final int viewVisibility = getHostVisibility(); 1125 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1126 || mNewSurfaceNeeded; 1127 1128 WindowManager.LayoutParams params = null; 1129 if (mWindowAttributesChanged) { 1130 mWindowAttributesChanged = false; 1131 surfaceChanged = true; 1132 params = lp; 1133 } 1134 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 1135 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1136 params = lp; 1137 mFullRedrawNeeded = true; 1138 mLayoutRequested = true; 1139 if (mLastInCompatMode) { 1140 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1141 mLastInCompatMode = false; 1142 } else { 1143 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1144 mLastInCompatMode = true; 1145 } 1146 } 1147 1148 mWindowAttributesChangesFlag = 0; 1149 1150 Rect frame = mWinFrame; 1151 if (mFirst) { 1152 mFullRedrawNeeded = true; 1153 mLayoutRequested = true; 1154 1155 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1156 // NOTE -- system code, won't try to do compat mode. 1157 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1158 Point size = new Point(); 1159 disp.getRealSize(size); 1160 desiredWindowWidth = size.x; 1161 desiredWindowHeight = size.y; 1162 } else { 1163 DisplayMetrics packageMetrics = 1164 mView.getContext().getResources().getDisplayMetrics(); 1165 desiredWindowWidth = packageMetrics.widthPixels; 1166 desiredWindowHeight = packageMetrics.heightPixels; 1167 } 1168 1169 // For the very first time, tell the view hierarchy that it 1170 // is attached to the window. Note that at this point the surface 1171 // object is not initialized to its backing store, but soon it 1172 // will be (assuming the window is visible). 1173 attachInfo.mSurface = mSurface; 1174 // We used to use the following condition to choose 32 bits drawing caches: 1175 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1176 // However, windows are now always 32 bits by default, so choose 32 bits 1177 attachInfo.mUse32BitDrawingCache = true; 1178 attachInfo.mHasWindowFocus = false; 1179 attachInfo.mWindowVisibility = viewVisibility; 1180 attachInfo.mRecomputeGlobalAttributes = false; 1181 viewVisibilityChanged = false; 1182 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1183 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1184 host.dispatchAttachedToWindow(attachInfo, 0); 1185 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1186 host.fitSystemWindows(mFitSystemWindowsInsets); 1187 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1188 1189 } else { 1190 desiredWindowWidth = frame.width(); 1191 desiredWindowHeight = frame.height(); 1192 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1193 if (DEBUG_ORIENTATION) Log.v(TAG, 1194 "View " + host + " resized to: " + frame); 1195 mFullRedrawNeeded = true; 1196 mLayoutRequested = true; 1197 windowSizeMayChange = true; 1198 } 1199 } 1200 1201 if (viewVisibilityChanged) { 1202 attachInfo.mWindowVisibility = viewVisibility; 1203 host.dispatchWindowVisibilityChanged(viewVisibility); 1204 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1205 destroyHardwareResources(); 1206 } 1207 if (viewVisibility == View.GONE) { 1208 // After making a window gone, we will count it as being 1209 // shown for the first time the next time it gets focus. 1210 mHasHadWindowFocus = false; 1211 } 1212 } 1213 1214 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1215 getRunQueue().executeActions(attachInfo.mHandler); 1216 1217 boolean insetsChanged = false; 1218 1219 boolean layoutRequested = mLayoutRequested && !mStopped; 1220 if (layoutRequested) { 1221 1222 final Resources res = mView.getContext().getResources(); 1223 1224 if (mFirst) { 1225 // make sure touch mode code executes by setting cached value 1226 // to opposite of the added touch mode. 1227 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1228 ensureTouchModeLocally(mAddedTouchMode); 1229 } else { 1230 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1231 insetsChanged = true; 1232 } 1233 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1234 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1235 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1236 + mAttachInfo.mVisibleInsets); 1237 } 1238 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1239 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1240 windowSizeMayChange = true; 1241 1242 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1243 // NOTE -- system code, won't try to do compat mode. 1244 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1245 Point size = new Point(); 1246 disp.getRealSize(size); 1247 desiredWindowWidth = size.x; 1248 desiredWindowHeight = size.y; 1249 } else { 1250 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1251 desiredWindowWidth = packageMetrics.widthPixels; 1252 desiredWindowHeight = packageMetrics.heightPixels; 1253 } 1254 } 1255 } 1256 1257 // Ask host how big it wants to be 1258 windowSizeMayChange |= measureHierarchy(host, lp, res, 1259 desiredWindowWidth, desiredWindowHeight); 1260 } 1261 1262 if (collectViewAttributes()) { 1263 params = lp; 1264 } 1265 if (attachInfo.mForceReportNewAttributes) { 1266 attachInfo.mForceReportNewAttributes = false; 1267 params = lp; 1268 } 1269 1270 if (mFirst || attachInfo.mViewVisibilityChanged) { 1271 attachInfo.mViewVisibilityChanged = false; 1272 int resizeMode = mSoftInputMode & 1273 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1274 // If we are in auto resize mode, then we need to determine 1275 // what mode to use now. 1276 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1277 final int N = attachInfo.mScrollContainers.size(); 1278 for (int i=0; i<N; i++) { 1279 if (attachInfo.mScrollContainers.get(i).isShown()) { 1280 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1281 } 1282 } 1283 if (resizeMode == 0) { 1284 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1285 } 1286 if ((lp.softInputMode & 1287 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1288 lp.softInputMode = (lp.softInputMode & 1289 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1290 resizeMode; 1291 params = lp; 1292 } 1293 } 1294 } 1295 1296 if (params != null && (host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1297 if (!PixelFormat.formatHasAlpha(params.format)) { 1298 params.format = PixelFormat.TRANSLUCENT; 1299 } 1300 } 1301 1302 if (mFitSystemWindowsRequested) { 1303 mFitSystemWindowsRequested = false; 1304 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1305 host.fitSystemWindows(mFitSystemWindowsInsets); 1306 if (mLayoutRequested) { 1307 // Short-circuit catching a new layout request here, so 1308 // we don't need to go through two layout passes when things 1309 // change due to fitting system windows, which can happen a lot. 1310 windowSizeMayChange |= measureHierarchy(host, lp, 1311 mView.getContext().getResources(), 1312 desiredWindowWidth, desiredWindowHeight); 1313 } 1314 } 1315 1316 if (layoutRequested) { 1317 // Clear this now, so that if anything requests a layout in the 1318 // rest of this function we will catch it and re-run a full 1319 // layout pass. 1320 mLayoutRequested = false; 1321 } 1322 1323 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1324 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1325 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1326 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1327 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1328 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1329 1330 final boolean computesInternalInsets = 1331 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1332 1333 boolean insetsPending = false; 1334 int relayoutResult = 0; 1335 1336 if (mFirst || windowShouldResize || insetsChanged || 1337 viewVisibilityChanged || params != null) { 1338 1339 if (viewVisibility == View.VISIBLE) { 1340 // If this window is giving internal insets to the window 1341 // manager, and it is being added or changing its visibility, 1342 // then we want to first give the window manager "fake" 1343 // insets to cause it to effectively ignore the content of 1344 // the window during layout. This avoids it briefly causing 1345 // other windows to resize/move based on the raw frame of the 1346 // window, waiting until we can finish laying out this window 1347 // and get back to the window manager with the ultimately 1348 // computed insets. 1349 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1350 } 1351 1352 if (mSurfaceHolder != null) { 1353 mSurfaceHolder.mSurfaceLock.lock(); 1354 mDrawingAllowed = true; 1355 } 1356 1357 boolean hwInitialized = false; 1358 boolean contentInsetsChanged = false; 1359 boolean visibleInsetsChanged; 1360 boolean hadSurface = mSurface.isValid(); 1361 1362 try { 1363 if (DEBUG_LAYOUT) { 1364 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1365 host.getMeasuredHeight() + ", params=" + params); 1366 } 1367 1368 final int surfaceGenerationId = mSurface.getGenerationId(); 1369 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1370 1371 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1372 + " content=" + mPendingContentInsets.toShortString() 1373 + " visible=" + mPendingVisibleInsets.toShortString() 1374 + " surface=" + mSurface); 1375 1376 if (mPendingConfiguration.seq != 0) { 1377 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1378 + mPendingConfiguration); 1379 updateConfiguration(mPendingConfiguration, !mFirst); 1380 mPendingConfiguration.seq = 0; 1381 } 1382 1383 contentInsetsChanged = !mPendingContentInsets.equals( 1384 mAttachInfo.mContentInsets); 1385 visibleInsetsChanged = !mPendingVisibleInsets.equals( 1386 mAttachInfo.mVisibleInsets); 1387 if (contentInsetsChanged) { 1388 if (mWidth > 0 && mHeight > 0 && lp != null && 1389 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1390 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1391 mSurface != null && mSurface.isValid() && 1392 !mAttachInfo.mTurnOffWindowResizeAnim && 1393 mAttachInfo.mHardwareRenderer != null && 1394 mAttachInfo.mHardwareRenderer.isEnabled() && 1395 mAttachInfo.mHardwareRenderer.validate() && 1396 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1397 1398 disposeResizeBuffer(); 1399 1400 boolean completed = false; 1401 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1402 HardwareCanvas layerCanvas = null; 1403 try { 1404 if (mResizeBuffer == null) { 1405 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1406 mWidth, mHeight, false); 1407 } else if (mResizeBuffer.getWidth() != mWidth || 1408 mResizeBuffer.getHeight() != mHeight) { 1409 mResizeBuffer.resize(mWidth, mHeight); 1410 } 1411 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1412 layerCanvas.setViewport(mWidth, mHeight); 1413 layerCanvas.onPreDraw(null); 1414 final int restoreCount = layerCanvas.save(); 1415 1416 layerCanvas.drawColor(0xff000000, PorterDuff.Mode.SRC); 1417 1418 int yoff; 1419 final boolean scrolling = mScroller != null 1420 && mScroller.computeScrollOffset(); 1421 if (scrolling) { 1422 yoff = mScroller.getCurrY(); 1423 mScroller.abortAnimation(); 1424 } else { 1425 yoff = mScrollY; 1426 } 1427 1428 layerCanvas.translate(0, -yoff); 1429 if (mTranslator != null) { 1430 mTranslator.translateCanvas(layerCanvas); 1431 } 1432 1433 mView.draw(layerCanvas); 1434 1435 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1436 1437 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1438 mResizeBufferDuration = mView.getResources().getInteger( 1439 com.android.internal.R.integer.config_mediumAnimTime); 1440 completed = true; 1441 1442 layerCanvas.restoreToCount(restoreCount); 1443 } catch (OutOfMemoryError e) { 1444 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1445 } finally { 1446 if (layerCanvas != null) { 1447 layerCanvas.onPostDraw(); 1448 } 1449 if (mResizeBuffer != null) { 1450 mResizeBuffer.end(hwRendererCanvas); 1451 if (!completed) { 1452 mResizeBuffer.destroy(); 1453 mResizeBuffer = null; 1454 } 1455 } 1456 } 1457 } 1458 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1459 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1460 + mAttachInfo.mContentInsets); 1461 } 1462 if (contentInsetsChanged || mLastSystemUiVisibility != 1463 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested) { 1464 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1465 mFitSystemWindowsRequested = false; 1466 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1467 host.fitSystemWindows(mFitSystemWindowsInsets); 1468 } 1469 if (visibleInsetsChanged) { 1470 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1471 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1472 + mAttachInfo.mVisibleInsets); 1473 } 1474 1475 if (!hadSurface) { 1476 if (mSurface.isValid()) { 1477 // If we are creating a new surface, then we need to 1478 // completely redraw it. Also, when we get to the 1479 // point of drawing it we will hold off and schedule 1480 // a new traversal instead. This is so we can tell the 1481 // window manager about all of the windows being displayed 1482 // before actually drawing them, so it can display then 1483 // all at once. 1484 newSurface = true; 1485 mFullRedrawNeeded = true; 1486 mPreviousTransparentRegion.setEmpty(); 1487 1488 if (mAttachInfo.mHardwareRenderer != null) { 1489 try { 1490 hwInitialized = mAttachInfo.mHardwareRenderer.initialize(mHolder); 1491 } catch (Surface.OutOfResourcesException e) { 1492 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1493 try { 1494 if (!sWindowSession.outOfMemory(mWindow)) { 1495 Slog.w(TAG, "No processes killed for memory; killing self"); 1496 Process.killProcess(Process.myPid()); 1497 } 1498 } catch (RemoteException ex) { 1499 } 1500 mLayoutRequested = true; // ask wm for a new surface next time. 1501 return; 1502 } 1503 } 1504 } 1505 } else if (!mSurface.isValid()) { 1506 // If the surface has been removed, then reset the scroll 1507 // positions. 1508 mLastScrolledFocus = null; 1509 mScrollY = mCurScrollY = 0; 1510 if (mScroller != null) { 1511 mScroller.abortAnimation(); 1512 } 1513 disposeResizeBuffer(); 1514 // Our surface is gone 1515 if (mAttachInfo.mHardwareRenderer != null && 1516 mAttachInfo.mHardwareRenderer.isEnabled()) { 1517 mAttachInfo.mHardwareRenderer.destroy(true); 1518 } 1519 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1520 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1521 mFullRedrawNeeded = true; 1522 try { 1523 mAttachInfo.mHardwareRenderer.updateSurface(mHolder); 1524 } catch (Surface.OutOfResourcesException e) { 1525 Log.e(TAG, "OutOfResourcesException updating HW surface", e); 1526 try { 1527 if (!sWindowSession.outOfMemory(mWindow)) { 1528 Slog.w(TAG, "No processes killed for memory; killing self"); 1529 Process.killProcess(Process.myPid()); 1530 } 1531 } catch (RemoteException ex) { 1532 } 1533 mLayoutRequested = true; // ask wm for a new surface next time. 1534 return; 1535 } 1536 } 1537 } catch (RemoteException e) { 1538 } 1539 1540 if (DEBUG_ORIENTATION) Log.v( 1541 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1542 1543 attachInfo.mWindowLeft = frame.left; 1544 attachInfo.mWindowTop = frame.top; 1545 1546 // !!FIXME!! This next section handles the case where we did not get the 1547 // window size we asked for. We should avoid this by getting a maximum size from 1548 // the window session beforehand. 1549 mWidth = frame.width(); 1550 mHeight = frame.height(); 1551 1552 if (mSurfaceHolder != null) { 1553 // The app owns the surface; tell it about what is going on. 1554 if (mSurface.isValid()) { 1555 // XXX .copyFrom() doesn't work! 1556 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1557 mSurfaceHolder.mSurface = mSurface; 1558 } 1559 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1560 mSurfaceHolder.mSurfaceLock.unlock(); 1561 if (mSurface.isValid()) { 1562 if (!hadSurface) { 1563 mSurfaceHolder.ungetCallbacks(); 1564 1565 mIsCreating = true; 1566 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1567 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1568 if (callbacks != null) { 1569 for (SurfaceHolder.Callback c : callbacks) { 1570 c.surfaceCreated(mSurfaceHolder); 1571 } 1572 } 1573 surfaceChanged = true; 1574 } 1575 if (surfaceChanged) { 1576 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1577 lp.format, mWidth, mHeight); 1578 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1579 if (callbacks != null) { 1580 for (SurfaceHolder.Callback c : callbacks) { 1581 c.surfaceChanged(mSurfaceHolder, lp.format, 1582 mWidth, mHeight); 1583 } 1584 } 1585 } 1586 mIsCreating = false; 1587 } else if (hadSurface) { 1588 mSurfaceHolder.ungetCallbacks(); 1589 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1590 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1591 if (callbacks != null) { 1592 for (SurfaceHolder.Callback c : callbacks) { 1593 c.surfaceDestroyed(mSurfaceHolder); 1594 } 1595 } 1596 mSurfaceHolder.mSurfaceLock.lock(); 1597 try { 1598 mSurfaceHolder.mSurface = new Surface(); 1599 } finally { 1600 mSurfaceHolder.mSurfaceLock.unlock(); 1601 } 1602 } 1603 } 1604 1605 if (mAttachInfo.mHardwareRenderer != null && 1606 mAttachInfo.mHardwareRenderer.isEnabled()) { 1607 if (hwInitialized || windowShouldResize || 1608 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1609 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1610 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1611 if (!hwInitialized) { 1612 mAttachInfo.mHardwareRenderer.invalidate(mHolder); 1613 } 1614 } 1615 } 1616 1617 if (!mStopped) { 1618 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1619 (relayoutResult&WindowManagerImpl.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1620 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1621 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1622 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1623 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1624 1625 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1626 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1627 + " mHeight=" + mHeight 1628 + " measuredHeight=" + host.getMeasuredHeight() 1629 + " coveredInsetsChanged=" + contentInsetsChanged); 1630 1631 // Ask host how big it wants to be 1632 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1633 1634 // Implementation of weights from WindowManager.LayoutParams 1635 // We just grow the dimensions as needed and re-measure if 1636 // needs be 1637 int width = host.getMeasuredWidth(); 1638 int height = host.getMeasuredHeight(); 1639 boolean measureAgain = false; 1640 1641 if (lp.horizontalWeight > 0.0f) { 1642 width += (int) ((mWidth - width) * lp.horizontalWeight); 1643 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1644 MeasureSpec.EXACTLY); 1645 measureAgain = true; 1646 } 1647 if (lp.verticalWeight > 0.0f) { 1648 height += (int) ((mHeight - height) * lp.verticalWeight); 1649 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1650 MeasureSpec.EXACTLY); 1651 measureAgain = true; 1652 } 1653 1654 if (measureAgain) { 1655 if (DEBUG_LAYOUT) Log.v(TAG, 1656 "And hey let's measure once more: width=" + width 1657 + " height=" + height); 1658 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1659 } 1660 1661 layoutRequested = true; 1662 } 1663 } 1664 } 1665 1666 final boolean didLayout = layoutRequested && !mStopped; 1667 boolean triggerGlobalLayoutListener = didLayout 1668 || attachInfo.mRecomputeGlobalAttributes; 1669 if (didLayout) { 1670 mLayoutRequested = false; 1671 mScrollMayChange = true; 1672 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v( 1673 TAG, "Laying out " + host + " to (" + 1674 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1675 long startTime = 0L; 1676 if (ViewDebug.DEBUG_PROFILE_LAYOUT) { 1677 startTime = SystemClock.elapsedRealtime(); 1678 } 1679 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1680 1681 if (false && ViewDebug.consistencyCheckEnabled) { 1682 if (!host.dispatchConsistencyCheck(ViewDebug.CONSISTENCY_LAYOUT)) { 1683 throw new IllegalStateException("The view hierarchy is an inconsistent state," 1684 + "please refer to the logs with the tag " 1685 + ViewDebug.CONSISTENCY_LOG_TAG + " for more infomation."); 1686 } 1687 } 1688 1689 if (ViewDebug.DEBUG_PROFILE_LAYOUT) { 1690 EventLog.writeEvent(60001, SystemClock.elapsedRealtime() - startTime); 1691 } 1692 1693 // By this point all views have been sized and positionned 1694 // We can compute the transparent area 1695 1696 if ((host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1697 // start out transparent 1698 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1699 host.getLocationInWindow(mTmpLocation); 1700 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1701 mTmpLocation[0] + host.mRight - host.mLeft, 1702 mTmpLocation[1] + host.mBottom - host.mTop); 1703 1704 host.gatherTransparentRegion(mTransparentRegion); 1705 if (mTranslator != null) { 1706 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1707 } 1708 1709 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1710 mPreviousTransparentRegion.set(mTransparentRegion); 1711 // reconfigure window manager 1712 try { 1713 sWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1714 } catch (RemoteException e) { 1715 } 1716 } 1717 } 1718 1719 if (DBG) { 1720 System.out.println("======================================"); 1721 System.out.println("performTraversals -- after setFrame"); 1722 host.debug(); 1723 } 1724 } 1725 1726 if (triggerGlobalLayoutListener) { 1727 attachInfo.mRecomputeGlobalAttributes = false; 1728 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1729 1730 if (AccessibilityManager.getInstance(host.mContext).isEnabled()) { 1731 postSendWindowContentChangedCallback(mView); 1732 } 1733 } 1734 1735 if (computesInternalInsets) { 1736 // Clear the original insets. 1737 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1738 insets.reset(); 1739 1740 // Compute new insets in place. 1741 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1742 1743 // Tell the window manager. 1744 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1745 mLastGivenInsets.set(insets); 1746 1747 // Translate insets to screen coordinates if needed. 1748 final Rect contentInsets; 1749 final Rect visibleInsets; 1750 final Region touchableRegion; 1751 if (mTranslator != null) { 1752 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1753 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1754 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1755 } else { 1756 contentInsets = insets.contentInsets; 1757 visibleInsets = insets.visibleInsets; 1758 touchableRegion = insets.touchableRegion; 1759 } 1760 1761 try { 1762 sWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1763 contentInsets, visibleInsets, touchableRegion); 1764 } catch (RemoteException e) { 1765 } 1766 } 1767 } 1768 1769 if (mFirst) { 1770 // handle first focus request 1771 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1772 + mView.hasFocus()); 1773 if (mView != null) { 1774 if (!mView.hasFocus()) { 1775 mView.requestFocus(View.FOCUS_FORWARD); 1776 mFocusedView = mRealFocusedView = mView.findFocus(); 1777 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1778 + mFocusedView); 1779 } else { 1780 mRealFocusedView = mView.findFocus(); 1781 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1782 + mRealFocusedView); 1783 } 1784 } 1785 } 1786 1787 mFirst = false; 1788 mWillDrawSoon = false; 1789 mNewSurfaceNeeded = false; 1790 mViewVisibility = viewVisibility; 1791 1792 if (mAttachInfo.mHasWindowFocus) { 1793 final boolean imTarget = WindowManager.LayoutParams 1794 .mayUseInputMethod(mWindowAttributes.flags); 1795 if (imTarget != mLastWasImTarget) { 1796 mLastWasImTarget = imTarget; 1797 InputMethodManager imm = InputMethodManager.peekInstance(); 1798 if (imm != null && imTarget) { 1799 imm.startGettingWindowFocus(mView); 1800 imm.onWindowFocus(mView, mView.findFocus(), 1801 mWindowAttributes.softInputMode, 1802 !mHasHadWindowFocus, mWindowAttributes.flags); 1803 } 1804 } 1805 } 1806 1807 // Remember if we must report the next draw. 1808 if ((relayoutResult & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 1809 mReportNextDraw = true; 1810 } 1811 1812 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1813 viewVisibility != View.VISIBLE; 1814 1815 if (!cancelDraw && !newSurface) { 1816 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1817 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1818 mPendingTransitions.get(i).startChangingAnimations(); 1819 } 1820 mPendingTransitions.clear(); 1821 } 1822 1823 performDraw(); 1824 } else { 1825 // End any pending transitions on this non-visible window 1826 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1827 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1828 mPendingTransitions.get(i).endChangingAnimations(); 1829 } 1830 mPendingTransitions.clear(); 1831 } 1832 1833 if (viewVisibility == View.VISIBLE) { 1834 // Try again 1835 scheduleTraversals(); 1836 } 1837 } 1838 } 1839 1840 public void requestTransparentRegion(View child) { 1841 // the test below should not fail unless someone is messing with us 1842 checkThread(); 1843 if (mView == child) { 1844 mView.mPrivateFlags |= View.REQUEST_TRANSPARENT_REGIONS; 1845 // Need to make sure we re-evaluate the window attributes next 1846 // time around, to ensure the window has the correct format. 1847 mWindowAttributesChanged = true; 1848 mWindowAttributesChangesFlag = 0; 1849 requestLayout(); 1850 } 1851 } 1852 1853 /** 1854 * Figures out the measure spec for the root view in a window based on it's 1855 * layout params. 1856 * 1857 * @param windowSize 1858 * The available width or height of the window 1859 * 1860 * @param rootDimension 1861 * The layout params for one dimension (width or height) of the 1862 * window. 1863 * 1864 * @return The measure spec to use to measure the root view. 1865 */ 1866 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 1867 int measureSpec; 1868 switch (rootDimension) { 1869 1870 case ViewGroup.LayoutParams.MATCH_PARENT: 1871 // Window can't resize. Force root view to be windowSize. 1872 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 1873 break; 1874 case ViewGroup.LayoutParams.WRAP_CONTENT: 1875 // Window can resize. Set max size for root view. 1876 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 1877 break; 1878 default: 1879 // Window wants to be an exact size. Force root view to be that size. 1880 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 1881 break; 1882 } 1883 return measureSpec; 1884 } 1885 1886 int mHardwareYOffset; 1887 int mResizeAlpha; 1888 final Paint mResizePaint = new Paint(); 1889 1890 public void onHardwarePreDraw(HardwareCanvas canvas) { 1891 canvas.translate(0, -mHardwareYOffset); 1892 } 1893 1894 public void onHardwarePostDraw(HardwareCanvas canvas) { 1895 if (mResizeBuffer != null) { 1896 mResizePaint.setAlpha(mResizeAlpha); 1897 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 1898 } 1899 drawAccessibilityFocusedDrawableIfNeeded(canvas); 1900 } 1901 1902 /** 1903 * @hide 1904 */ 1905 void outputDisplayList(View view) { 1906 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 1907 DisplayList displayList = view.getDisplayList(); 1908 if (displayList != null) { 1909 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 1910 } 1911 } 1912 } 1913 1914 /** 1915 * @see #PROPERTY_PROFILE_RENDERING 1916 */ 1917 private void profileRendering(boolean enabled) { 1918 if (mProfileRendering) { 1919 mRenderProfilingEnabled = enabled; 1920 if (mRenderProfiler == null) { 1921 mRenderProfiler = new Thread(new Runnable() { 1922 @Override 1923 public void run() { 1924 Log.d(TAG, "Starting profiling thread"); 1925 while (mRenderProfilingEnabled) { 1926 mAttachInfo.mHandler.post(new Runnable() { 1927 @Override 1928 public void run() { 1929 mDirty.set(0, 0, mWidth, mHeight); 1930 scheduleTraversals(); 1931 } 1932 }); 1933 try { 1934 // TODO: This should use vsync when we get an API 1935 Thread.sleep(15); 1936 } catch (InterruptedException e) { 1937 Log.d(TAG, "Exiting profiling thread"); 1938 } 1939 } 1940 } 1941 }, "Rendering Profiler"); 1942 mRenderProfiler.start(); 1943 } else { 1944 mRenderProfiler.interrupt(); 1945 mRenderProfiler = null; 1946 } 1947 } 1948 } 1949 1950 /** 1951 * Called from draw() when DEBUG_FPS is enabled 1952 */ 1953 private void trackFPS() { 1954 // Tracks frames per second drawn. First value in a series of draws may be bogus 1955 // because it down not account for the intervening idle time 1956 long nowTime = System.currentTimeMillis(); 1957 if (mFpsStartTime < 0) { 1958 mFpsStartTime = mFpsPrevTime = nowTime; 1959 mFpsNumFrames = 0; 1960 } else { 1961 ++mFpsNumFrames; 1962 String thisHash = Integer.toHexString(System.identityHashCode(this)); 1963 long frameTime = nowTime - mFpsPrevTime; 1964 long totalTime = nowTime - mFpsStartTime; 1965 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 1966 mFpsPrevTime = nowTime; 1967 if (totalTime > 1000) { 1968 float fps = (float) mFpsNumFrames * 1000 / totalTime; 1969 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 1970 mFpsStartTime = nowTime; 1971 mFpsNumFrames = 0; 1972 } 1973 } 1974 } 1975 1976 private void performDraw() { 1977 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 1978 return; 1979 } 1980 1981 final long drawStartTime; 1982 if (ViewDebug.DEBUG_LATENCY) { 1983 drawStartTime = System.nanoTime(); 1984 if (mLastDrawFinishedTimeNanos != 0) { 1985 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting draw(); it has been " 1986 + ((drawStartTime - mLastDrawFinishedTimeNanos) * 0.000001f) 1987 + "ms since the last draw finished."); 1988 } else { 1989 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting draw()."); 1990 } 1991 } 1992 1993 final boolean fullRedrawNeeded = mFullRedrawNeeded; 1994 mFullRedrawNeeded = false; 1995 1996 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 1997 try { 1998 draw(fullRedrawNeeded); 1999 } finally { 2000 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2001 } 2002 2003 if (ViewDebug.DEBUG_LATENCY) { 2004 long now = System.nanoTime(); 2005 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "performDraw() took " 2006 + ((now - drawStartTime) * 0.000001f) 2007 + "ms."); 2008 mLastDrawFinishedTimeNanos = now; 2009 } 2010 2011 if (mReportNextDraw) { 2012 mReportNextDraw = false; 2013 2014 if (LOCAL_LOGV) { 2015 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2016 } 2017 if (mSurfaceHolder != null && mSurface.isValid()) { 2018 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2019 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2020 if (callbacks != null) { 2021 for (SurfaceHolder.Callback c : callbacks) { 2022 if (c instanceof SurfaceHolder.Callback2) { 2023 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2024 mSurfaceHolder); 2025 } 2026 } 2027 } 2028 } 2029 try { 2030 sWindowSession.finishDrawing(mWindow); 2031 } catch (RemoteException e) { 2032 } 2033 } 2034 } 2035 2036 private void draw(boolean fullRedrawNeeded) { 2037 Surface surface = mSurface; 2038 if (surface == null || !surface.isValid()) { 2039 return; 2040 } 2041 2042 if (DEBUG_FPS) { 2043 trackFPS(); 2044 } 2045 2046 if (!sFirstDrawComplete) { 2047 synchronized (sFirstDrawHandlers) { 2048 sFirstDrawComplete = true; 2049 final int count = sFirstDrawHandlers.size(); 2050 for (int i = 0; i< count; i++) { 2051 mHandler.post(sFirstDrawHandlers.get(i)); 2052 } 2053 } 2054 } 2055 2056 scrollToRectOrFocus(null, false); 2057 2058 final AttachInfo attachInfo = mAttachInfo; 2059 if (attachInfo.mViewScrollChanged) { 2060 attachInfo.mViewScrollChanged = false; 2061 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2062 } 2063 2064 int yoff; 2065 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2066 if (animating) { 2067 yoff = mScroller.getCurrY(); 2068 } else { 2069 yoff = mScrollY; 2070 } 2071 if (mCurScrollY != yoff) { 2072 mCurScrollY = yoff; 2073 fullRedrawNeeded = true; 2074 } 2075 2076 final float appScale = attachInfo.mApplicationScale; 2077 final boolean scalingRequired = attachInfo.mScalingRequired; 2078 2079 int resizeAlpha = 0; 2080 if (mResizeBuffer != null) { 2081 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2082 if (deltaTime < mResizeBufferDuration) { 2083 float amt = deltaTime/(float) mResizeBufferDuration; 2084 amt = mResizeInterpolator.getInterpolation(amt); 2085 animating = true; 2086 resizeAlpha = 255 - (int)(amt*255); 2087 } else { 2088 disposeResizeBuffer(); 2089 } 2090 } 2091 2092 final Rect dirty = mDirty; 2093 if (mSurfaceHolder != null) { 2094 // The app owns the surface, we won't draw. 2095 dirty.setEmpty(); 2096 if (animating) { 2097 if (mScroller != null) { 2098 mScroller.abortAnimation(); 2099 } 2100 disposeResizeBuffer(); 2101 } 2102 return; 2103 } 2104 2105 if (fullRedrawNeeded) { 2106 attachInfo.mIgnoreDirtyState = true; 2107 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2108 } 2109 2110 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2111 Log.v(TAG, "Draw " + mView + "/" 2112 + mWindowAttributes.getTitle() 2113 + ": dirty={" + dirty.left + "," + dirty.top 2114 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2115 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2116 appScale + ", width=" + mWidth + ", height=" + mHeight); 2117 } 2118 2119 attachInfo.mTreeObserver.dispatchOnDraw(); 2120 2121 if (!dirty.isEmpty() || mIsAnimating) { 2122 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2123 // Draw with hardware renderer. 2124 mIsAnimating = false; 2125 mHardwareYOffset = yoff; 2126 mResizeAlpha = resizeAlpha; 2127 2128 mCurrentDirty.set(dirty); 2129 mCurrentDirty.union(mPreviousDirty); 2130 mPreviousDirty.set(dirty); 2131 dirty.setEmpty(); 2132 2133 if (attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2134 animating ? null : mCurrentDirty)) { 2135 mPreviousDirty.set(0, 0, mWidth, mHeight); 2136 } 2137 } else if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2138 return; 2139 } 2140 } 2141 2142 if (animating) { 2143 mFullRedrawNeeded = true; 2144 scheduleTraversals(); 2145 } 2146 } 2147 2148 /** 2149 * @return true if drawing was succesfull, false if an error occurred 2150 */ 2151 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2152 boolean scalingRequired, Rect dirty) { 2153 2154 // Draw with software renderer. 2155 Canvas canvas; 2156 try { 2157 int left = dirty.left; 2158 int top = dirty.top; 2159 int right = dirty.right; 2160 int bottom = dirty.bottom; 2161 2162 final long lockCanvasStartTime; 2163 if (ViewDebug.DEBUG_LATENCY) { 2164 lockCanvasStartTime = System.nanoTime(); 2165 } 2166 2167 canvas = mSurface.lockCanvas(dirty); 2168 2169 if (ViewDebug.DEBUG_LATENCY) { 2170 long now = System.nanoTime(); 2171 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- lockCanvas() took " 2172 + ((now - lockCanvasStartTime) * 0.000001f) + "ms"); 2173 } 2174 2175 if (left != dirty.left || top != dirty.top || right != dirty.right || 2176 bottom != dirty.bottom) { 2177 attachInfo.mIgnoreDirtyState = true; 2178 } 2179 2180 // TODO: Do this in native 2181 canvas.setDensity(mDensity); 2182 } catch (Surface.OutOfResourcesException e) { 2183 Log.e(TAG, "OutOfResourcesException locking surface", e); 2184 try { 2185 if (!sWindowSession.outOfMemory(mWindow)) { 2186 Slog.w(TAG, "No processes killed for memory; killing self"); 2187 Process.killProcess(Process.myPid()); 2188 } 2189 } catch (RemoteException ex) { 2190 } 2191 mLayoutRequested = true; // ask wm for a new surface next time. 2192 return false; 2193 } catch (IllegalArgumentException e) { 2194 Log.e(TAG, "IllegalArgumentException locking surface", e); 2195 // Don't assume this is due to out of memory, it could be 2196 // something else, and if it is something else then we could 2197 // kill stuff (or ourself) for no reason. 2198 mLayoutRequested = true; // ask wm for a new surface next time. 2199 return false; 2200 } 2201 2202 try { 2203 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2204 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2205 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2206 //canvas.drawARGB(255, 255, 0, 0); 2207 } 2208 2209 long startTime = 0L; 2210 if (ViewDebug.DEBUG_PROFILE_DRAWING) { 2211 startTime = SystemClock.elapsedRealtime(); 2212 } 2213 2214 // If this bitmap's format includes an alpha channel, we 2215 // need to clear it before drawing so that the child will 2216 // properly re-composite its drawing on a transparent 2217 // background. This automatically respects the clip/dirty region 2218 // or 2219 // If we are applying an offset, we need to clear the area 2220 // where the offset doesn't appear to avoid having garbage 2221 // left in the blank areas. 2222 if (!canvas.isOpaque() || yoff != 0) { 2223 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2224 } 2225 2226 dirty.setEmpty(); 2227 mIsAnimating = false; 2228 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2229 mView.mPrivateFlags |= View.DRAWN; 2230 2231 if (DEBUG_DRAW) { 2232 Context cxt = mView.getContext(); 2233 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2234 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2235 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2236 } 2237 try { 2238 canvas.translate(0, -yoff); 2239 if (mTranslator != null) { 2240 mTranslator.translateCanvas(canvas); 2241 } 2242 canvas.setScreenDensity(scalingRequired 2243 ? DisplayMetrics.DENSITY_DEVICE : 0); 2244 attachInfo.mSetIgnoreDirtyState = false; 2245 2246 final long drawStartTime; 2247 if (ViewDebug.DEBUG_LATENCY) { 2248 drawStartTime = System.nanoTime(); 2249 } 2250 2251 mView.draw(canvas); 2252 2253 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2254 2255 if (ViewDebug.DEBUG_LATENCY) { 2256 long now = System.nanoTime(); 2257 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- draw() took " 2258 + ((now - drawStartTime) * 0.000001f) + "ms"); 2259 } 2260 } finally { 2261 if (!attachInfo.mSetIgnoreDirtyState) { 2262 // Only clear the flag if it was not set during the mView.draw() call 2263 attachInfo.mIgnoreDirtyState = false; 2264 } 2265 } 2266 2267 if (false && ViewDebug.consistencyCheckEnabled) { 2268 mView.dispatchConsistencyCheck(ViewDebug.CONSISTENCY_DRAWING); 2269 } 2270 2271 if (ViewDebug.DEBUG_PROFILE_DRAWING) { 2272 EventLog.writeEvent(60000, SystemClock.elapsedRealtime() - startTime); 2273 } 2274 } finally { 2275 final long unlockCanvasAndPostStartTime; 2276 if (ViewDebug.DEBUG_LATENCY) { 2277 unlockCanvasAndPostStartTime = System.nanoTime(); 2278 } 2279 2280 surface.unlockCanvasAndPost(canvas); 2281 2282 if (ViewDebug.DEBUG_LATENCY) { 2283 long now = System.nanoTime(); 2284 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- unlockCanvasAndPost() took " 2285 + ((now - unlockCanvasAndPostStartTime) * 0.000001f) + "ms"); 2286 } 2287 2288 if (LOCAL_LOGV) { 2289 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2290 } 2291 } 2292 return true; 2293 } 2294 2295 /** 2296 * We want to draw a highlight around the current accessibility focused. 2297 * Since adding a style for all possible view is not a viable option we 2298 * have this specialized drawing method. 2299 * 2300 * Note: We are doing this here to be able to draw the highlight for 2301 * virtual views in addition to real ones. 2302 * 2303 * @param canvas The canvas on which to draw. 2304 */ 2305 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2306 if (!AccessibilityManager.getInstance(mView.mContext).isEnabled()) { 2307 return; 2308 } 2309 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2310 return; 2311 } 2312 Drawable drawable = getAccessibilityFocusedDrawable(); 2313 if (drawable == null) { 2314 return; 2315 } 2316 AccessibilityNodeProvider provider = 2317 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2318 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2319 if (provider == null) { 2320 mAccessibilityFocusedHost.getDrawingRect(bounds); 2321 if (mView instanceof ViewGroup) { 2322 ViewGroup viewGroup = (ViewGroup) mView; 2323 viewGroup.offsetDescendantRectToMyCoords(mAccessibilityFocusedHost, bounds); 2324 } 2325 } else { 2326 if (mAccessibilityFocusedVirtualView == null) { 2327 mAccessibilityFocusedVirtualView = provider.findAccessibilitiyFocus(View.NO_ID); 2328 } 2329 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2330 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2331 } 2332 drawable.setBounds(bounds); 2333 drawable.draw(canvas); 2334 } 2335 2336 private Drawable getAccessibilityFocusedDrawable() { 2337 if (mAttachInfo != null) { 2338 // Lazily load the accessibility focus drawable. 2339 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2340 TypedValue value = new TypedValue(); 2341 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2342 R.attr.accessibilityFocusedDrawable, value, true); 2343 if (resolved) { 2344 mAttachInfo.mAccessibilityFocusDrawable = 2345 mView.mContext.getResources().getDrawable(value.resourceId); 2346 } 2347 } 2348 return mAttachInfo.mAccessibilityFocusDrawable; 2349 } 2350 return null; 2351 } 2352 2353 void invalidateDisplayLists() { 2354 final ArrayList<DisplayList> displayLists = mDisplayLists; 2355 final int count = displayLists.size(); 2356 2357 for (int i = 0; i < count; i++) { 2358 displayLists.get(i).invalidate(); 2359 } 2360 2361 displayLists.clear(); 2362 } 2363 2364 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2365 final View.AttachInfo attachInfo = mAttachInfo; 2366 final Rect ci = attachInfo.mContentInsets; 2367 final Rect vi = attachInfo.mVisibleInsets; 2368 int scrollY = 0; 2369 boolean handled = false; 2370 2371 if (vi.left > ci.left || vi.top > ci.top 2372 || vi.right > ci.right || vi.bottom > ci.bottom) { 2373 // We'll assume that we aren't going to change the scroll 2374 // offset, since we want to avoid that unless it is actually 2375 // going to make the focus visible... otherwise we scroll 2376 // all over the place. 2377 scrollY = mScrollY; 2378 // We can be called for two different situations: during a draw, 2379 // to update the scroll position if the focus has changed (in which 2380 // case 'rectangle' is null), or in response to a 2381 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2382 // is non-null and we just want to scroll to whatever that 2383 // rectangle is). 2384 View focus = mRealFocusedView; 2385 2386 // When in touch mode, focus points to the previously focused view, 2387 // which may have been removed from the view hierarchy. The following 2388 // line checks whether the view is still in our hierarchy. 2389 if (focus == null || focus.mAttachInfo != mAttachInfo) { 2390 mRealFocusedView = null; 2391 return false; 2392 } 2393 2394 if (focus != mLastScrolledFocus) { 2395 // If the focus has changed, then ignore any requests to scroll 2396 // to a rectangle; first we want to make sure the entire focus 2397 // view is visible. 2398 rectangle = null; 2399 } 2400 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2401 + " rectangle=" + rectangle + " ci=" + ci 2402 + " vi=" + vi); 2403 if (focus == mLastScrolledFocus && !mScrollMayChange 2404 && rectangle == null) { 2405 // Optimization: if the focus hasn't changed since last 2406 // time, and no layout has happened, then just leave things 2407 // as they are. 2408 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2409 + mScrollY + " vi=" + vi.toShortString()); 2410 } else if (focus != null) { 2411 // We need to determine if the currently focused view is 2412 // within the visible part of the window and, if not, apply 2413 // a pan so it can be seen. 2414 mLastScrolledFocus = focus; 2415 mScrollMayChange = false; 2416 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2417 // Try to find the rectangle from the focus view. 2418 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2419 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2420 + mView.getWidth() + " h=" + mView.getHeight() 2421 + " ci=" + ci.toShortString() 2422 + " vi=" + vi.toShortString()); 2423 if (rectangle == null) { 2424 focus.getFocusedRect(mTempRect); 2425 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2426 + ": focusRect=" + mTempRect.toShortString()); 2427 if (mView instanceof ViewGroup) { 2428 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2429 focus, mTempRect); 2430 } 2431 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2432 "Focus in window: focusRect=" 2433 + mTempRect.toShortString() 2434 + " visRect=" + mVisRect.toShortString()); 2435 } else { 2436 mTempRect.set(rectangle); 2437 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2438 "Request scroll to rect: " 2439 + mTempRect.toShortString() 2440 + " visRect=" + mVisRect.toShortString()); 2441 } 2442 if (mTempRect.intersect(mVisRect)) { 2443 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2444 "Focus window visible rect: " 2445 + mTempRect.toShortString()); 2446 if (mTempRect.height() > 2447 (mView.getHeight()-vi.top-vi.bottom)) { 2448 // If the focus simply is not going to fit, then 2449 // best is probably just to leave things as-is. 2450 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2451 "Too tall; leaving scrollY=" + scrollY); 2452 } else if ((mTempRect.top-scrollY) < vi.top) { 2453 scrollY -= vi.top - (mTempRect.top-scrollY); 2454 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2455 "Top covered; scrollY=" + scrollY); 2456 } else if ((mTempRect.bottom-scrollY) 2457 > (mView.getHeight()-vi.bottom)) { 2458 scrollY += (mTempRect.bottom-scrollY) 2459 - (mView.getHeight()-vi.bottom); 2460 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2461 "Bottom covered; scrollY=" + scrollY); 2462 } 2463 handled = true; 2464 } 2465 } 2466 } 2467 } 2468 2469 if (scrollY != mScrollY) { 2470 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2471 + mScrollY + " , new=" + scrollY); 2472 if (!immediate && mResizeBuffer == null) { 2473 if (mScroller == null) { 2474 mScroller = new Scroller(mView.getContext()); 2475 } 2476 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2477 } else if (mScroller != null) { 2478 mScroller.abortAnimation(); 2479 } 2480 mScrollY = scrollY; 2481 } 2482 2483 return handled; 2484 } 2485 2486 void setAccessibilityFocusedHost(View host) { 2487 if (mAccessibilityFocusedHost != null && mAccessibilityFocusedVirtualView == null) { 2488 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2489 } 2490 mAccessibilityFocusedHost = host; 2491 mAccessibilityFocusedVirtualView = null; 2492 } 2493 2494 public void requestChildFocus(View child, View focused) { 2495 checkThread(); 2496 2497 if (DEBUG_INPUT_RESIZE) { 2498 Log.v(TAG, "Request child focus: focus now " + focused); 2499 } 2500 2501 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, focused); 2502 scheduleTraversals(); 2503 2504 mFocusedView = mRealFocusedView = focused; 2505 } 2506 2507 public void clearChildFocus(View child) { 2508 checkThread(); 2509 2510 if (DEBUG_INPUT_RESIZE) { 2511 Log.v(TAG, "Clearing child focus"); 2512 } 2513 2514 mOldFocusedView = mFocusedView; 2515 2516 // Invoke the listener only if there is no view to take focus 2517 if (focusSearch(null, View.FOCUS_FORWARD) == null) { 2518 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, null); 2519 } 2520 2521 mFocusedView = mRealFocusedView = null; 2522 } 2523 2524 @Override 2525 public ViewParent getParentForAccessibility() { 2526 return null; 2527 } 2528 2529 public void focusableViewAvailable(View v) { 2530 checkThread(); 2531 if (mView != null) { 2532 if (!mView.hasFocus()) { 2533 v.requestFocus(); 2534 } else { 2535 // the one case where will transfer focus away from the current one 2536 // is if the current view is a view group that prefers to give focus 2537 // to its children first AND the view is a descendant of it. 2538 mFocusedView = mView.findFocus(); 2539 boolean descendantsHaveDibsOnFocus = 2540 (mFocusedView instanceof ViewGroup) && 2541 (((ViewGroup) mFocusedView).getDescendantFocusability() == 2542 ViewGroup.FOCUS_AFTER_DESCENDANTS); 2543 if (descendantsHaveDibsOnFocus && isViewDescendantOf(v, mFocusedView)) { 2544 // If a view gets the focus, the listener will be invoked from requestChildFocus() 2545 v.requestFocus(); 2546 } 2547 } 2548 } 2549 } 2550 2551 public void recomputeViewAttributes(View child) { 2552 checkThread(); 2553 if (mView == child) { 2554 mAttachInfo.mRecomputeGlobalAttributes = true; 2555 if (!mWillDrawSoon) { 2556 scheduleTraversals(); 2557 } 2558 } 2559 } 2560 2561 void dispatchDetachedFromWindow() { 2562 if (mView != null && mView.mAttachInfo != null) { 2563 if (mAttachInfo.mHardwareRenderer != null && 2564 mAttachInfo.mHardwareRenderer.isEnabled()) { 2565 mAttachInfo.mHardwareRenderer.validate(); 2566 } 2567 mView.dispatchDetachedFromWindow(); 2568 } 2569 2570 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2571 mAccessibilityManager.removeAccessibilityStateChangeListener( 2572 mAccessibilityInteractionConnectionManager); 2573 removeSendWindowContentChangedCallback(); 2574 2575 destroyHardwareRenderer(); 2576 2577 mView = null; 2578 mAttachInfo.mRootView = null; 2579 mAttachInfo.mSurface = null; 2580 2581 mSurface.release(); 2582 2583 if (mInputQueueCallback != null && mInputQueue != null) { 2584 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2585 mInputQueueCallback = null; 2586 mInputQueue = null; 2587 } else if (mInputEventReceiver != null) { 2588 mInputEventReceiver.dispose(); 2589 mInputEventReceiver = null; 2590 } 2591 try { 2592 sWindowSession.remove(mWindow); 2593 } catch (RemoteException e) { 2594 } 2595 2596 // Dispose the input channel after removing the window so the Window Manager 2597 // doesn't interpret the input channel being closed as an abnormal termination. 2598 if (mInputChannel != null) { 2599 mInputChannel.dispose(); 2600 mInputChannel = null; 2601 } 2602 2603 unscheduleTraversals(); 2604 } 2605 2606 void updateConfiguration(Configuration config, boolean force) { 2607 if (DEBUG_CONFIGURATION) Log.v(TAG, 2608 "Applying new config to window " 2609 + mWindowAttributes.getTitle() 2610 + ": " + config); 2611 2612 CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded(); 2613 if (ci != null) { 2614 config = new Configuration(config); 2615 ci.applyToConfiguration(config); 2616 } 2617 2618 synchronized (sConfigCallbacks) { 2619 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2620 sConfigCallbacks.get(i).onConfigurationChanged(config); 2621 } 2622 } 2623 if (mView != null) { 2624 // At this point the resources have been updated to 2625 // have the most recent config, whatever that is. Use 2626 // the on in them which may be newer. 2627 config = mView.getResources().getConfiguration(); 2628 if (force || mLastConfiguration.diff(config) != 0) { 2629 mLastConfiguration.setTo(config); 2630 mView.dispatchConfigurationChanged(config); 2631 } 2632 } 2633 } 2634 2635 /** 2636 * Return true if child is an ancestor of parent, (or equal to the parent). 2637 */ 2638 static boolean isViewDescendantOf(View child, View parent) { 2639 if (child == parent) { 2640 return true; 2641 } 2642 2643 final ViewParent theParent = child.getParent(); 2644 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2645 } 2646 2647 private static void forceLayout(View view) { 2648 view.forceLayout(); 2649 if (view instanceof ViewGroup) { 2650 ViewGroup group = (ViewGroup) view; 2651 final int count = group.getChildCount(); 2652 for (int i = 0; i < count; i++) { 2653 forceLayout(group.getChildAt(i)); 2654 } 2655 } 2656 } 2657 2658 private final static int MSG_INVALIDATE = 1; 2659 private final static int MSG_INVALIDATE_RECT = 2; 2660 private final static int MSG_DIE = 3; 2661 private final static int MSG_RESIZED = 4; 2662 private final static int MSG_RESIZED_REPORT = 5; 2663 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2664 private final static int MSG_DISPATCH_KEY = 7; 2665 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2666 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2667 private final static int MSG_IME_FINISHED_EVENT = 10; 2668 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2669 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2670 private final static int MSG_CHECK_FOCUS = 13; 2671 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2672 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2673 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2674 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2675 private final static int MSG_UPDATE_CONFIGURATION = 18; 2676 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2677 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2678 private final static int MSG_INVALIDATE_DISPLAY_LIST = 21; 2679 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 22; 2680 2681 final class ViewRootHandler extends Handler { 2682 @Override 2683 public String getMessageName(Message message) { 2684 switch (message.what) { 2685 case MSG_INVALIDATE: 2686 return "MSG_INVALIDATE"; 2687 case MSG_INVALIDATE_RECT: 2688 return "MSG_INVALIDATE_RECT"; 2689 case MSG_DIE: 2690 return "MSG_DIE"; 2691 case MSG_RESIZED: 2692 return "MSG_RESIZED"; 2693 case MSG_RESIZED_REPORT: 2694 return "MSG_RESIZED_REPORT"; 2695 case MSG_WINDOW_FOCUS_CHANGED: 2696 return "MSG_WINDOW_FOCUS_CHANGED"; 2697 case MSG_DISPATCH_KEY: 2698 return "MSG_DISPATCH_KEY"; 2699 case MSG_DISPATCH_APP_VISIBILITY: 2700 return "MSG_DISPATCH_APP_VISIBILITY"; 2701 case MSG_DISPATCH_GET_NEW_SURFACE: 2702 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2703 case MSG_IME_FINISHED_EVENT: 2704 return "MSG_IME_FINISHED_EVENT"; 2705 case MSG_DISPATCH_KEY_FROM_IME: 2706 return "MSG_DISPATCH_KEY_FROM_IME"; 2707 case MSG_FINISH_INPUT_CONNECTION: 2708 return "MSG_FINISH_INPUT_CONNECTION"; 2709 case MSG_CHECK_FOCUS: 2710 return "MSG_CHECK_FOCUS"; 2711 case MSG_CLOSE_SYSTEM_DIALOGS: 2712 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2713 case MSG_DISPATCH_DRAG_EVENT: 2714 return "MSG_DISPATCH_DRAG_EVENT"; 2715 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2716 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2717 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2718 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2719 case MSG_UPDATE_CONFIGURATION: 2720 return "MSG_UPDATE_CONFIGURATION"; 2721 case MSG_PROCESS_INPUT_EVENTS: 2722 return "MSG_PROCESS_INPUT_EVENTS"; 2723 case MSG_DISPATCH_SCREEN_STATE: 2724 return "MSG_DISPATCH_SCREEN_STATE"; 2725 case MSG_INVALIDATE_DISPLAY_LIST: 2726 return "MSG_INVALIDATE_DISPLAY_LIST"; 2727 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2728 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2729 } 2730 return super.getMessageName(message); 2731 } 2732 2733 @Override 2734 public void handleMessage(Message msg) { 2735 switch (msg.what) { 2736 case MSG_INVALIDATE: 2737 ((View) msg.obj).invalidate(); 2738 break; 2739 case MSG_INVALIDATE_RECT: 2740 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2741 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2742 info.release(); 2743 break; 2744 case MSG_IME_FINISHED_EVENT: 2745 handleImeFinishedEvent(msg.arg1, msg.arg2 != 0); 2746 break; 2747 case MSG_PROCESS_INPUT_EVENTS: 2748 mProcessInputEventsScheduled = false; 2749 doProcessInputEvents(); 2750 break; 2751 case MSG_DISPATCH_APP_VISIBILITY: 2752 handleAppVisibility(msg.arg1 != 0); 2753 break; 2754 case MSG_DISPATCH_GET_NEW_SURFACE: 2755 handleGetNewSurface(); 2756 break; 2757 case MSG_RESIZED: 2758 ResizedInfo ri = (ResizedInfo)msg.obj; 2759 2760 if (mWinFrame.width() == msg.arg1 && mWinFrame.height() == msg.arg2 2761 && mPendingContentInsets.equals(ri.coveredInsets) 2762 && mPendingVisibleInsets.equals(ri.visibleInsets) 2763 && ((ResizedInfo)msg.obj).newConfig == null) { 2764 break; 2765 } 2766 // fall through... 2767 case MSG_RESIZED_REPORT: 2768 if (mAdded) { 2769 Configuration config = ((ResizedInfo)msg.obj).newConfig; 2770 if (config != null) { 2771 updateConfiguration(config, false); 2772 } 2773 mWinFrame.left = 0; 2774 mWinFrame.right = msg.arg1; 2775 mWinFrame.top = 0; 2776 mWinFrame.bottom = msg.arg2; 2777 mPendingContentInsets.set(((ResizedInfo)msg.obj).coveredInsets); 2778 mPendingVisibleInsets.set(((ResizedInfo)msg.obj).visibleInsets); 2779 if (msg.what == MSG_RESIZED_REPORT) { 2780 mReportNextDraw = true; 2781 } 2782 2783 if (mView != null) { 2784 forceLayout(mView); 2785 } 2786 requestLayout(); 2787 } 2788 break; 2789 case MSG_WINDOW_FOCUS_CHANGED: { 2790 if (mAdded) { 2791 boolean hasWindowFocus = msg.arg1 != 0; 2792 mAttachInfo.mHasWindowFocus = hasWindowFocus; 2793 2794 profileRendering(hasWindowFocus); 2795 2796 if (hasWindowFocus) { 2797 boolean inTouchMode = msg.arg2 != 0; 2798 ensureTouchModeLocally(inTouchMode); 2799 2800 if (mAttachInfo.mHardwareRenderer != null && 2801 mSurface != null && mSurface.isValid()) { 2802 mFullRedrawNeeded = true; 2803 try { 2804 mAttachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2805 mHolder); 2806 } catch (Surface.OutOfResourcesException e) { 2807 Log.e(TAG, "OutOfResourcesException locking surface", e); 2808 try { 2809 if (!sWindowSession.outOfMemory(mWindow)) { 2810 Slog.w(TAG, "No processes killed for memory; killing self"); 2811 Process.killProcess(Process.myPid()); 2812 } 2813 } catch (RemoteException ex) { 2814 } 2815 // Retry in a bit. 2816 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 2817 return; 2818 } 2819 } 2820 } 2821 2822 mLastWasImTarget = WindowManager.LayoutParams 2823 .mayUseInputMethod(mWindowAttributes.flags); 2824 2825 InputMethodManager imm = InputMethodManager.peekInstance(); 2826 if (mView != null) { 2827 if (hasWindowFocus && imm != null && mLastWasImTarget) { 2828 imm.startGettingWindowFocus(mView); 2829 } 2830 mAttachInfo.mKeyDispatchState.reset(); 2831 mView.dispatchWindowFocusChanged(hasWindowFocus); 2832 } 2833 2834 // Note: must be done after the focus change callbacks, 2835 // so all of the view state is set up correctly. 2836 if (hasWindowFocus) { 2837 if (imm != null && mLastWasImTarget) { 2838 imm.onWindowFocus(mView, mView.findFocus(), 2839 mWindowAttributes.softInputMode, 2840 !mHasHadWindowFocus, mWindowAttributes.flags); 2841 } 2842 // Clear the forward bit. We can just do this directly, since 2843 // the window manager doesn't care about it. 2844 mWindowAttributes.softInputMode &= 2845 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2846 ((WindowManager.LayoutParams)mView.getLayoutParams()) 2847 .softInputMode &= 2848 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2849 mHasHadWindowFocus = true; 2850 } 2851 2852 if (mView != null && mAccessibilityManager.isEnabled()) { 2853 if (hasWindowFocus) { 2854 mView.sendAccessibilityEvent( 2855 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2856 // Give accessibility focus to the view that has input 2857 // focus if such, otherwise to the first one. 2858 if (mView instanceof ViewGroup) { 2859 ViewGroup viewGroup = (ViewGroup) mView; 2860 View focused = viewGroup.findFocus(); 2861 if (focused != null) { 2862 focused.requestAccessibilityFocus(); 2863 } 2864 } 2865 // There is no accessibility focus, despite our effort 2866 // above, now just give it to the first view. 2867 if (mAccessibilityFocusedHost == null) { 2868 mView.requestAccessibilityFocus(); 2869 } 2870 } else { 2871 // Clear accessibility focus when the window loses input focus. 2872 setAccessibilityFocusedHost(null); 2873 } 2874 } 2875 } 2876 } break; 2877 case MSG_DIE: 2878 doDie(); 2879 break; 2880 case MSG_DISPATCH_KEY: { 2881 KeyEvent event = (KeyEvent)msg.obj; 2882 enqueueInputEvent(event, null, 0, true); 2883 } break; 2884 case MSG_DISPATCH_KEY_FROM_IME: { 2885 if (LOCAL_LOGV) Log.v( 2886 TAG, "Dispatching key " 2887 + msg.obj + " from IME to " + mView); 2888 KeyEvent event = (KeyEvent)msg.obj; 2889 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 2890 // The IME is trying to say this event is from the 2891 // system! Bad bad bad! 2892 //noinspection UnusedAssignment 2893 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 2894 } 2895 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 2896 } break; 2897 case MSG_FINISH_INPUT_CONNECTION: { 2898 InputMethodManager imm = InputMethodManager.peekInstance(); 2899 if (imm != null) { 2900 imm.reportFinishInputConnection((InputConnection)msg.obj); 2901 } 2902 } break; 2903 case MSG_CHECK_FOCUS: { 2904 InputMethodManager imm = InputMethodManager.peekInstance(); 2905 if (imm != null) { 2906 imm.checkFocus(); 2907 } 2908 } break; 2909 case MSG_CLOSE_SYSTEM_DIALOGS: { 2910 if (mView != null) { 2911 mView.onCloseSystemDialogs((String)msg.obj); 2912 } 2913 } break; 2914 case MSG_DISPATCH_DRAG_EVENT: 2915 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 2916 DragEvent event = (DragEvent)msg.obj; 2917 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 2918 handleDragEvent(event); 2919 } break; 2920 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 2921 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo)msg.obj); 2922 } break; 2923 case MSG_UPDATE_CONFIGURATION: { 2924 Configuration config = (Configuration)msg.obj; 2925 if (config.isOtherSeqNewer(mLastConfiguration)) { 2926 config = mLastConfiguration; 2927 } 2928 updateConfiguration(config, false); 2929 } break; 2930 case MSG_DISPATCH_SCREEN_STATE: { 2931 if (mView != null) { 2932 handleScreenStateChange(msg.arg1 == 1); 2933 } 2934 } break; 2935 case MSG_INVALIDATE_DISPLAY_LIST: { 2936 invalidateDisplayLists(); 2937 } break; 2938 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 2939 setAccessibilityFocusedHost(null); 2940 } break; 2941 } 2942 } 2943 } 2944 2945 final ViewRootHandler mHandler = new ViewRootHandler(); 2946 2947 /** 2948 * Something in the current window tells us we need to change the touch mode. For 2949 * example, we are not in touch mode, and the user touches the screen. 2950 * 2951 * If the touch mode has changed, tell the window manager, and handle it locally. 2952 * 2953 * @param inTouchMode Whether we want to be in touch mode. 2954 * @return True if the touch mode changed and focus changed was changed as a result 2955 */ 2956 boolean ensureTouchMode(boolean inTouchMode) { 2957 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 2958 + "touch mode is " + mAttachInfo.mInTouchMode); 2959 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 2960 2961 // tell the window manager 2962 try { 2963 sWindowSession.setInTouchMode(inTouchMode); 2964 } catch (RemoteException e) { 2965 throw new RuntimeException(e); 2966 } 2967 2968 // handle the change 2969 return ensureTouchModeLocally(inTouchMode); 2970 } 2971 2972 /** 2973 * Ensure that the touch mode for this window is set, and if it is changing, 2974 * take the appropriate action. 2975 * @param inTouchMode Whether we want to be in touch mode. 2976 * @return True if the touch mode changed and focus changed was changed as a result 2977 */ 2978 private boolean ensureTouchModeLocally(boolean inTouchMode) { 2979 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 2980 + "touch mode is " + mAttachInfo.mInTouchMode); 2981 2982 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 2983 2984 mAttachInfo.mInTouchMode = inTouchMode; 2985 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 2986 2987 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 2988 } 2989 2990 private boolean enterTouchMode() { 2991 if (mView != null) { 2992 if (mView.hasFocus()) { 2993 // note: not relying on mFocusedView here because this could 2994 // be when the window is first being added, and mFocused isn't 2995 // set yet. 2996 final View focused = mView.findFocus(); 2997 if (focused != null) { 2998 if (focused.isFocusableInTouchMode()) { 2999 return true; 3000 } 3001 final ViewGroup ancestorToTakeFocus = 3002 findAncestorToTakeFocusInTouchMode(focused); 3003 if (ancestorToTakeFocus != null) { 3004 // there is an ancestor that wants focus after its descendants that 3005 // is focusable in touch mode.. give it focus 3006 return ancestorToTakeFocus.requestFocus(); 3007 } 3008 } 3009 // nothing appropriate to have focus in touch mode, clear it out 3010 mView.unFocus(); 3011 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(focused, null); 3012 mFocusedView = null; 3013 mOldFocusedView = null; 3014 return true; 3015 } 3016 } 3017 return false; 3018 } 3019 3020 /** 3021 * Find an ancestor of focused that wants focus after its descendants and is 3022 * focusable in touch mode. 3023 * @param focused The currently focused view. 3024 * @return An appropriate view, or null if no such view exists. 3025 */ 3026 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3027 ViewParent parent = focused.getParent(); 3028 while (parent instanceof ViewGroup) { 3029 final ViewGroup vgParent = (ViewGroup) parent; 3030 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3031 && vgParent.isFocusableInTouchMode()) { 3032 return vgParent; 3033 } 3034 if (vgParent.isRootNamespace()) { 3035 return null; 3036 } else { 3037 parent = vgParent.getParent(); 3038 } 3039 } 3040 return null; 3041 } 3042 3043 private boolean leaveTouchMode() { 3044 if (mView != null) { 3045 boolean inputFocusValid = false; 3046 if (mView.hasFocus()) { 3047 // i learned the hard way to not trust mFocusedView :) 3048 mFocusedView = mView.findFocus(); 3049 if (!(mFocusedView instanceof ViewGroup)) { 3050 // some view has focus, let it keep it 3051 inputFocusValid = true; 3052 } else if (((ViewGroup) mFocusedView).getDescendantFocusability() != 3053 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3054 // some view group has focus, and doesn't prefer its children 3055 // over itself for focus, so let them keep it. 3056 inputFocusValid = true; 3057 } 3058 } 3059 // In accessibility mode we always have a view that has the 3060 // accessibility focus and input focus follows it, i.e. we 3061 // try to give input focus to the accessibility focused view. 3062 if (!AccessibilityManager.getInstance(mView.mContext).isEnabled()) { 3063 // If the current input focus is not valid, find the best view to give 3064 // focus to in this brave new non-touch-mode world. 3065 if (!inputFocusValid) { 3066 final View focused = focusSearch(null, View.FOCUS_DOWN); 3067 if (focused != null) { 3068 return focused.requestFocus(View.FOCUS_DOWN); 3069 } 3070 } 3071 } else { 3072 // If the current input focus is not valid clear it but do not 3073 // give it to another view since the accessibility focus is 3074 // leading now and the input one follows. 3075 if (!inputFocusValid) { 3076 if (mFocusedView != null) { 3077 mView.unFocus(); 3078 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mFocusedView, null); 3079 mFocusedView = null; 3080 mOldFocusedView = null; 3081 return true; 3082 } 3083 } 3084 } 3085 } 3086 return false; 3087 } 3088 3089 private void deliverInputEvent(QueuedInputEvent q) { 3090 if (ViewDebug.DEBUG_LATENCY) { 3091 q.mDeliverTimeNanos = System.nanoTime(); 3092 } 3093 3094 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 3095 try { 3096 if (q.mEvent instanceof KeyEvent) { 3097 deliverKeyEvent(q); 3098 } else { 3099 final int source = q.mEvent.getSource(); 3100 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3101 deliverPointerEvent(q); 3102 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3103 deliverTrackballEvent(q); 3104 } else { 3105 deliverGenericMotionEvent(q); 3106 } 3107 } 3108 } finally { 3109 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 3110 } 3111 } 3112 3113 private void deliverPointerEvent(QueuedInputEvent q) { 3114 final MotionEvent event = (MotionEvent)q.mEvent; 3115 final boolean isTouchEvent = event.isTouchEvent(); 3116 if (mInputEventConsistencyVerifier != null) { 3117 if (isTouchEvent) { 3118 mInputEventConsistencyVerifier.onTouchEvent(event, 0); 3119 } else { 3120 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 3121 } 3122 } 3123 3124 // If there is no view, then the event will not be handled. 3125 if (mView == null || !mAdded) { 3126 finishInputEvent(q, false); 3127 return; 3128 } 3129 3130 // Translate the pointer event for compatibility, if needed. 3131 if (mTranslator != null) { 3132 mTranslator.translateEventInScreenToAppWindow(event); 3133 } 3134 3135 // Enter touch mode on down or scroll. 3136 final int action = event.getAction(); 3137 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3138 ensureTouchMode(true); 3139 } 3140 3141 // Offset the scroll position. 3142 if (mCurScrollY != 0) { 3143 event.offsetLocation(0, mCurScrollY); 3144 } 3145 if (MEASURE_LATENCY) { 3146 lt.sample("A Dispatching PointerEvents", System.nanoTime() - event.getEventTimeNano()); 3147 } 3148 3149 // Remember the touch position for possible drag-initiation. 3150 if (isTouchEvent) { 3151 mLastTouchPoint.x = event.getRawX(); 3152 mLastTouchPoint.y = event.getRawY(); 3153 } 3154 3155 // Dispatch touch to view hierarchy. 3156 boolean handled = mView.dispatchPointerEvent(event); 3157 if (MEASURE_LATENCY) { 3158 lt.sample("B Dispatched PointerEvents ", System.nanoTime() - event.getEventTimeNano()); 3159 } 3160 if (handled) { 3161 finishInputEvent(q, true); 3162 return; 3163 } 3164 3165 // Pointer event was unhandled. 3166 finishInputEvent(q, false); 3167 } 3168 3169 private void deliverTrackballEvent(QueuedInputEvent q) { 3170 final MotionEvent event = (MotionEvent)q.mEvent; 3171 if (mInputEventConsistencyVerifier != null) { 3172 mInputEventConsistencyVerifier.onTrackballEvent(event, 0); 3173 } 3174 3175 // If there is no view, then the event will not be handled. 3176 if (mView == null || !mAdded) { 3177 finishInputEvent(q, false); 3178 return; 3179 } 3180 3181 // Deliver the trackball event to the view. 3182 if (mView.dispatchTrackballEvent(event)) { 3183 // If we reach this, we delivered a trackball event to mView and 3184 // mView consumed it. Because we will not translate the trackball 3185 // event into a key event, touch mode will not exit, so we exit 3186 // touch mode here. 3187 ensureTouchMode(false); 3188 3189 finishInputEvent(q, true); 3190 mLastTrackballTime = Integer.MIN_VALUE; 3191 return; 3192 } 3193 3194 // Translate the trackball event into DPAD keys and try to deliver those. 3195 final TrackballAxis x = mTrackballAxisX; 3196 final TrackballAxis y = mTrackballAxisY; 3197 3198 long curTime = SystemClock.uptimeMillis(); 3199 if ((mLastTrackballTime + MAX_TRACKBALL_DELAY) < curTime) { 3200 // It has been too long since the last movement, 3201 // so restart at the beginning. 3202 x.reset(0); 3203 y.reset(0); 3204 mLastTrackballTime = curTime; 3205 } 3206 3207 final int action = event.getAction(); 3208 final int metaState = event.getMetaState(); 3209 switch (action) { 3210 case MotionEvent.ACTION_DOWN: 3211 x.reset(2); 3212 y.reset(2); 3213 enqueueInputEvent(new KeyEvent(curTime, curTime, 3214 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3215 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3216 InputDevice.SOURCE_KEYBOARD)); 3217 break; 3218 case MotionEvent.ACTION_UP: 3219 x.reset(2); 3220 y.reset(2); 3221 enqueueInputEvent(new KeyEvent(curTime, curTime, 3222 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3223 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3224 InputDevice.SOURCE_KEYBOARD)); 3225 break; 3226 } 3227 3228 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + x.position + " step=" 3229 + x.step + " dir=" + x.dir + " acc=" + x.acceleration 3230 + " move=" + event.getX() 3231 + " / Y=" + y.position + " step=" 3232 + y.step + " dir=" + y.dir + " acc=" + y.acceleration 3233 + " move=" + event.getY()); 3234 final float xOff = x.collect(event.getX(), event.getEventTime(), "X"); 3235 final float yOff = y.collect(event.getY(), event.getEventTime(), "Y"); 3236 3237 // Generate DPAD events based on the trackball movement. 3238 // We pick the axis that has moved the most as the direction of 3239 // the DPAD. When we generate DPAD events for one axis, then the 3240 // other axis is reset -- we don't want to perform DPAD jumps due 3241 // to slight movements in the trackball when making major movements 3242 // along the other axis. 3243 int keycode = 0; 3244 int movement = 0; 3245 float accel = 1; 3246 if (xOff > yOff) { 3247 movement = x.generate((2/event.getXPrecision())); 3248 if (movement != 0) { 3249 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 3250 : KeyEvent.KEYCODE_DPAD_LEFT; 3251 accel = x.acceleration; 3252 y.reset(2); 3253 } 3254 } else if (yOff > 0) { 3255 movement = y.generate((2/event.getYPrecision())); 3256 if (movement != 0) { 3257 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 3258 : KeyEvent.KEYCODE_DPAD_UP; 3259 accel = y.acceleration; 3260 x.reset(2); 3261 } 3262 } 3263 3264 if (keycode != 0) { 3265 if (movement < 0) movement = -movement; 3266 int accelMovement = (int)(movement * accel); 3267 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 3268 + " accelMovement=" + accelMovement 3269 + " accel=" + accel); 3270 if (accelMovement > movement) { 3271 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3272 + keycode); 3273 movement--; 3274 int repeatCount = accelMovement - movement; 3275 enqueueInputEvent(new KeyEvent(curTime, curTime, 3276 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 3277 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3278 InputDevice.SOURCE_KEYBOARD)); 3279 } 3280 while (movement > 0) { 3281 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3282 + keycode); 3283 movement--; 3284 curTime = SystemClock.uptimeMillis(); 3285 enqueueInputEvent(new KeyEvent(curTime, curTime, 3286 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 3287 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3288 InputDevice.SOURCE_KEYBOARD)); 3289 enqueueInputEvent(new KeyEvent(curTime, curTime, 3290 KeyEvent.ACTION_UP, keycode, 0, metaState, 3291 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3292 InputDevice.SOURCE_KEYBOARD)); 3293 } 3294 mLastTrackballTime = curTime; 3295 } 3296 3297 // Unfortunately we can't tell whether the application consumed the keys, so 3298 // we always consider the trackball event handled. 3299 finishInputEvent(q, true); 3300 } 3301 3302 private void deliverGenericMotionEvent(QueuedInputEvent q) { 3303 final MotionEvent event = (MotionEvent)q.mEvent; 3304 if (mInputEventConsistencyVerifier != null) { 3305 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 3306 } 3307 3308 final int source = event.getSource(); 3309 final boolean isJoystick = (source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0; 3310 3311 // If there is no view, then the event will not be handled. 3312 if (mView == null || !mAdded) { 3313 if (isJoystick) { 3314 updateJoystickDirection(event, false); 3315 } 3316 finishInputEvent(q, false); 3317 return; 3318 } 3319 3320 // Deliver the event to the view. 3321 if (mView.dispatchGenericMotionEvent(event)) { 3322 if (isJoystick) { 3323 updateJoystickDirection(event, false); 3324 } 3325 finishInputEvent(q, true); 3326 return; 3327 } 3328 3329 if (isJoystick) { 3330 // Translate the joystick event into DPAD keys and try to deliver those. 3331 updateJoystickDirection(event, true); 3332 finishInputEvent(q, true); 3333 } else { 3334 finishInputEvent(q, false); 3335 } 3336 } 3337 3338 private void updateJoystickDirection(MotionEvent event, boolean synthesizeNewKeys) { 3339 final long time = event.getEventTime(); 3340 final int metaState = event.getMetaState(); 3341 final int deviceId = event.getDeviceId(); 3342 final int source = event.getSource(); 3343 3344 int xDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_X)); 3345 if (xDirection == 0) { 3346 xDirection = joystickAxisValueToDirection(event.getX()); 3347 } 3348 3349 int yDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 3350 if (yDirection == 0) { 3351 yDirection = joystickAxisValueToDirection(event.getY()); 3352 } 3353 3354 if (xDirection != mLastJoystickXDirection) { 3355 if (mLastJoystickXKeyCode != 0) { 3356 enqueueInputEvent(new KeyEvent(time, time, 3357 KeyEvent.ACTION_UP, mLastJoystickXKeyCode, 0, metaState, 3358 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3359 mLastJoystickXKeyCode = 0; 3360 } 3361 3362 mLastJoystickXDirection = xDirection; 3363 3364 if (xDirection != 0 && synthesizeNewKeys) { 3365 mLastJoystickXKeyCode = xDirection > 0 3366 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 3367 enqueueInputEvent(new KeyEvent(time, time, 3368 KeyEvent.ACTION_DOWN, mLastJoystickXKeyCode, 0, metaState, 3369 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3370 } 3371 } 3372 3373 if (yDirection != mLastJoystickYDirection) { 3374 if (mLastJoystickYKeyCode != 0) { 3375 enqueueInputEvent(new KeyEvent(time, time, 3376 KeyEvent.ACTION_UP, mLastJoystickYKeyCode, 0, metaState, 3377 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3378 mLastJoystickYKeyCode = 0; 3379 } 3380 3381 mLastJoystickYDirection = yDirection; 3382 3383 if (yDirection != 0 && synthesizeNewKeys) { 3384 mLastJoystickYKeyCode = yDirection > 0 3385 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 3386 enqueueInputEvent(new KeyEvent(time, time, 3387 KeyEvent.ACTION_DOWN, mLastJoystickYKeyCode, 0, metaState, 3388 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3389 } 3390 } 3391 } 3392 3393 private static int joystickAxisValueToDirection(float value) { 3394 if (value >= 0.5f) { 3395 return 1; 3396 } else if (value <= -0.5f) { 3397 return -1; 3398 } else { 3399 return 0; 3400 } 3401 } 3402 3403 /** 3404 * Returns true if the key is used for keyboard navigation. 3405 * @param keyEvent The key event. 3406 * @return True if the key is used for keyboard navigation. 3407 */ 3408 private static boolean isNavigationKey(KeyEvent keyEvent) { 3409 switch (keyEvent.getKeyCode()) { 3410 case KeyEvent.KEYCODE_DPAD_LEFT: 3411 case KeyEvent.KEYCODE_DPAD_RIGHT: 3412 case KeyEvent.KEYCODE_DPAD_UP: 3413 case KeyEvent.KEYCODE_DPAD_DOWN: 3414 case KeyEvent.KEYCODE_DPAD_CENTER: 3415 case KeyEvent.KEYCODE_PAGE_UP: 3416 case KeyEvent.KEYCODE_PAGE_DOWN: 3417 case KeyEvent.KEYCODE_MOVE_HOME: 3418 case KeyEvent.KEYCODE_MOVE_END: 3419 case KeyEvent.KEYCODE_TAB: 3420 case KeyEvent.KEYCODE_SPACE: 3421 case KeyEvent.KEYCODE_ENTER: 3422 return true; 3423 } 3424 return false; 3425 } 3426 3427 /** 3428 * Returns true if the key is used for typing. 3429 * @param keyEvent The key event. 3430 * @return True if the key is used for typing. 3431 */ 3432 private static boolean isTypingKey(KeyEvent keyEvent) { 3433 return keyEvent.getUnicodeChar() > 0; 3434 } 3435 3436 /** 3437 * See if the key event means we should leave touch mode (and leave touch mode if so). 3438 * @param event The key event. 3439 * @return Whether this key event should be consumed (meaning the act of 3440 * leaving touch mode alone is considered the event). 3441 */ 3442 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 3443 // Only relevant in touch mode. 3444 if (!mAttachInfo.mInTouchMode) { 3445 return false; 3446 } 3447 3448 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 3449 final int action = event.getAction(); 3450 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 3451 return false; 3452 } 3453 3454 // Don't leave touch mode if the IME told us not to. 3455 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 3456 return false; 3457 } 3458 3459 // If the key can be used for keyboard navigation then leave touch mode 3460 // and select a focused view if needed (in ensureTouchMode). 3461 // When a new focused view is selected, we consume the navigation key because 3462 // navigation doesn't make much sense unless a view already has focus so 3463 // the key's purpose is to set focus. 3464 if (isNavigationKey(event)) { 3465 return ensureTouchMode(false); 3466 } 3467 3468 // If the key can be used for typing then leave touch mode 3469 // and select a focused view if needed (in ensureTouchMode). 3470 // Always allow the view to process the typing key. 3471 if (isTypingKey(event)) { 3472 ensureTouchMode(false); 3473 return false; 3474 } 3475 3476 return false; 3477 } 3478 3479 private void deliverKeyEvent(QueuedInputEvent q) { 3480 final KeyEvent event = (KeyEvent)q.mEvent; 3481 if (mInputEventConsistencyVerifier != null) { 3482 mInputEventConsistencyVerifier.onKeyEvent(event, 0); 3483 } 3484 3485 if ((q.mFlags & QueuedInputEvent.FLAG_DELIVER_POST_IME) == 0) { 3486 // If there is no view, then the event will not be handled. 3487 if (mView == null || !mAdded) { 3488 finishInputEvent(q, false); 3489 return; 3490 } 3491 3492 if (LOCAL_LOGV) Log.v(TAG, "Dispatching key " + event + " to " + mView); 3493 3494 // Perform predispatching before the IME. 3495 if (mView.dispatchKeyEventPreIme(event)) { 3496 finishInputEvent(q, true); 3497 return; 3498 } 3499 3500 // Dispatch to the IME before propagating down the view hierarchy. 3501 // The IME will eventually call back into handleImeFinishedEvent. 3502 if (mLastWasImTarget) { 3503 InputMethodManager imm = InputMethodManager.peekInstance(); 3504 if (imm != null) { 3505 final int seq = event.getSequenceNumber(); 3506 if (DEBUG_IMF) Log.v(TAG, "Sending key event to IME: seq=" 3507 + seq + " event=" + event); 3508 imm.dispatchKeyEvent(mView.getContext(), seq, event, mInputMethodCallback); 3509 return; 3510 } 3511 } 3512 } 3513 3514 // Not dispatching to IME, continue with post IME actions. 3515 deliverKeyEventPostIme(q); 3516 } 3517 3518 void handleImeFinishedEvent(int seq, boolean handled) { 3519 final QueuedInputEvent q = mCurrentInputEvent; 3520 if (q != null && q.mEvent.getSequenceNumber() == seq) { 3521 final KeyEvent event = (KeyEvent)q.mEvent; 3522 if (DEBUG_IMF) { 3523 Log.v(TAG, "IME finished event: seq=" + seq 3524 + " handled=" + handled + " event=" + event); 3525 } 3526 if (handled) { 3527 finishInputEvent(q, true); 3528 } else { 3529 deliverKeyEventPostIme(q); 3530 } 3531 } else { 3532 if (DEBUG_IMF) { 3533 Log.v(TAG, "IME finished event: seq=" + seq 3534 + " handled=" + handled + ", event not found!"); 3535 } 3536 } 3537 } 3538 3539 private void deliverKeyEventPostIme(QueuedInputEvent q) { 3540 final KeyEvent event = (KeyEvent)q.mEvent; 3541 if (ViewDebug.DEBUG_LATENCY) { 3542 q.mDeliverPostImeTimeNanos = System.nanoTime(); 3543 } 3544 3545 // If the view went away, then the event will not be handled. 3546 if (mView == null || !mAdded) { 3547 finishInputEvent(q, false); 3548 return; 3549 } 3550 3551 // If the key's purpose is to exit touch mode then we consume it and consider it handled. 3552 if (checkForLeavingTouchModeAndConsume(event)) { 3553 finishInputEvent(q, true); 3554 return; 3555 } 3556 3557 // Make sure the fallback event policy sees all keys that will be delivered to the 3558 // view hierarchy. 3559 mFallbackEventHandler.preDispatchKeyEvent(event); 3560 3561 // Deliver the key to the view hierarchy. 3562 if (mView.dispatchKeyEvent(event)) { 3563 finishInputEvent(q, true); 3564 return; 3565 } 3566 3567 // If the Control modifier is held, try to interpret the key as a shortcut. 3568 if (event.getAction() == KeyEvent.ACTION_DOWN 3569 && event.isCtrlPressed() 3570 && event.getRepeatCount() == 0 3571 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3572 if (mView.dispatchKeyShortcutEvent(event)) { 3573 finishInputEvent(q, true); 3574 return; 3575 } 3576 } 3577 3578 // Apply the fallback event policy. 3579 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3580 finishInputEvent(q, true); 3581 return; 3582 } 3583 3584 // Handle automatic focus changes. 3585 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3586 int direction = 0; 3587 switch (event.getKeyCode()) { 3588 case KeyEvent.KEYCODE_DPAD_LEFT: 3589 if (event.hasNoModifiers()) { 3590 direction = View.FOCUS_LEFT; 3591 } 3592 break; 3593 case KeyEvent.KEYCODE_DPAD_RIGHT: 3594 if (event.hasNoModifiers()) { 3595 direction = View.FOCUS_RIGHT; 3596 } 3597 break; 3598 case KeyEvent.KEYCODE_DPAD_UP: 3599 if (event.hasNoModifiers()) { 3600 direction = View.FOCUS_UP; 3601 } 3602 break; 3603 case KeyEvent.KEYCODE_DPAD_DOWN: 3604 if (event.hasNoModifiers()) { 3605 direction = View.FOCUS_DOWN; 3606 } 3607 break; 3608 case KeyEvent.KEYCODE_TAB: 3609 if (event.hasNoModifiers()) { 3610 direction = View.FOCUS_FORWARD; 3611 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3612 direction = View.FOCUS_BACKWARD; 3613 } 3614 break; 3615 } 3616 if (direction != 0) { 3617 View focused = mView.findFocus(); 3618 if (focused != null) { 3619 View v = focused.focusSearch(direction); 3620 if (v != null && v != focused) { 3621 // do the math the get the interesting rect 3622 // of previous focused into the coord system of 3623 // newly focused view 3624 focused.getFocusedRect(mTempRect); 3625 if (mView instanceof ViewGroup) { 3626 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3627 focused, mTempRect); 3628 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3629 v, mTempRect); 3630 } 3631 if (v.requestFocus(direction, mTempRect)) { 3632 playSoundEffect(SoundEffectConstants 3633 .getContantForFocusDirection(direction)); 3634 finishInputEvent(q, true); 3635 return; 3636 } 3637 } 3638 3639 // Give the focused view a last chance to handle the dpad key. 3640 if (mView.dispatchUnhandledMove(focused, direction)) { 3641 finishInputEvent(q, true); 3642 return; 3643 } 3644 } 3645 } 3646 } 3647 3648 // Key was unhandled. 3649 finishInputEvent(q, false); 3650 } 3651 3652 /* drag/drop */ 3653 void setLocalDragState(Object obj) { 3654 mLocalDragState = obj; 3655 } 3656 3657 private void handleDragEvent(DragEvent event) { 3658 // From the root, only drag start/end/location are dispatched. entered/exited 3659 // are determined and dispatched by the viewgroup hierarchy, who then report 3660 // that back here for ultimate reporting back to the framework. 3661 if (mView != null && mAdded) { 3662 final int what = event.mAction; 3663 3664 if (what == DragEvent.ACTION_DRAG_EXITED) { 3665 // A direct EXITED event means that the window manager knows we've just crossed 3666 // a window boundary, so the current drag target within this one must have 3667 // just been exited. Send it the usual notifications and then we're done 3668 // for now. 3669 mView.dispatchDragEvent(event); 3670 } else { 3671 // Cache the drag description when the operation starts, then fill it in 3672 // on subsequent calls as a convenience 3673 if (what == DragEvent.ACTION_DRAG_STARTED) { 3674 mCurrentDragView = null; // Start the current-recipient tracking 3675 mDragDescription = event.mClipDescription; 3676 } else { 3677 event.mClipDescription = mDragDescription; 3678 } 3679 3680 // For events with a [screen] location, translate into window coordinates 3681 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 3682 mDragPoint.set(event.mX, event.mY); 3683 if (mTranslator != null) { 3684 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 3685 } 3686 3687 if (mCurScrollY != 0) { 3688 mDragPoint.offset(0, mCurScrollY); 3689 } 3690 3691 event.mX = mDragPoint.x; 3692 event.mY = mDragPoint.y; 3693 } 3694 3695 // Remember who the current drag target is pre-dispatch 3696 final View prevDragView = mCurrentDragView; 3697 3698 // Now dispatch the drag/drop event 3699 boolean result = mView.dispatchDragEvent(event); 3700 3701 // If we changed apparent drag target, tell the OS about it 3702 if (prevDragView != mCurrentDragView) { 3703 try { 3704 if (prevDragView != null) { 3705 sWindowSession.dragRecipientExited(mWindow); 3706 } 3707 if (mCurrentDragView != null) { 3708 sWindowSession.dragRecipientEntered(mWindow); 3709 } 3710 } catch (RemoteException e) { 3711 Slog.e(TAG, "Unable to note drag target change"); 3712 } 3713 } 3714 3715 // Report the drop result when we're done 3716 if (what == DragEvent.ACTION_DROP) { 3717 mDragDescription = null; 3718 try { 3719 Log.i(TAG, "Reporting drop result: " + result); 3720 sWindowSession.reportDropResult(mWindow, result); 3721 } catch (RemoteException e) { 3722 Log.e(TAG, "Unable to report drop result"); 3723 } 3724 } 3725 3726 // When the drag operation ends, release any local state object 3727 // that may have been in use 3728 if (what == DragEvent.ACTION_DRAG_ENDED) { 3729 setLocalDragState(null); 3730 } 3731 } 3732 } 3733 event.recycle(); 3734 } 3735 3736 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 3737 if (mSeq != args.seq) { 3738 // The sequence has changed, so we need to update our value and make 3739 // sure to do a traversal afterward so the window manager is given our 3740 // most recent data. 3741 mSeq = args.seq; 3742 mAttachInfo.mForceReportNewAttributes = true; 3743 scheduleTraversals(); 3744 } 3745 if (mView == null) return; 3746 if (args.localChanges != 0) { 3747 if (mAttachInfo != null) { 3748 mAttachInfo.mRecomputeGlobalAttributes = true; 3749 } 3750 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 3751 scheduleTraversals(); 3752 } 3753 mView.dispatchSystemUiVisibilityChanged(args.globalVisibility); 3754 } 3755 3756 public void getLastTouchPoint(Point outLocation) { 3757 outLocation.x = (int) mLastTouchPoint.x; 3758 outLocation.y = (int) mLastTouchPoint.y; 3759 } 3760 3761 public void setDragFocus(View newDragTarget) { 3762 if (mCurrentDragView != newDragTarget) { 3763 mCurrentDragView = newDragTarget; 3764 } 3765 } 3766 3767 private AudioManager getAudioManager() { 3768 if (mView == null) { 3769 throw new IllegalStateException("getAudioManager called when there is no mView"); 3770 } 3771 if (mAudioManager == null) { 3772 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 3773 } 3774 return mAudioManager; 3775 } 3776 3777 public AccessibilityInteractionController getAccessibilityInteractionController() { 3778 if (mView == null) { 3779 throw new IllegalStateException("getAccessibilityInteractionController" 3780 + " called when there is no mView"); 3781 } 3782 if (mAccessibilityInteractionController == null) { 3783 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 3784 } 3785 return mAccessibilityInteractionController; 3786 } 3787 3788 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 3789 boolean insetsPending) throws RemoteException { 3790 3791 float appScale = mAttachInfo.mApplicationScale; 3792 boolean restore = false; 3793 if (params != null && mTranslator != null) { 3794 restore = true; 3795 params.backup(); 3796 mTranslator.translateWindowLayout(params); 3797 } 3798 if (params != null) { 3799 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 3800 } 3801 mPendingConfiguration.seq = 0; 3802 //Log.d(TAG, ">>>>>> CALLING relayout"); 3803 if (params != null && mOrigWindowType != params.type) { 3804 // For compatibility with old apps, don't crash here. 3805 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 3806 Slog.w(TAG, "Window type can not be changed after " 3807 + "the window is added; ignoring change of " + mView); 3808 params.type = mOrigWindowType; 3809 } 3810 } 3811 int relayoutResult = sWindowSession.relayout( 3812 mWindow, mSeq, params, 3813 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 3814 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 3815 viewVisibility, insetsPending ? WindowManagerImpl.RELAYOUT_INSETS_PENDING : 0, 3816 mWinFrame, mPendingContentInsets, mPendingVisibleInsets, 3817 mPendingConfiguration, mSurface); 3818 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 3819 if (restore) { 3820 params.restore(); 3821 } 3822 3823 if (mTranslator != null) { 3824 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 3825 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 3826 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 3827 } 3828 return relayoutResult; 3829 } 3830 3831 /** 3832 * {@inheritDoc} 3833 */ 3834 public void playSoundEffect(int effectId) { 3835 checkThread(); 3836 3837 try { 3838 final AudioManager audioManager = getAudioManager(); 3839 3840 switch (effectId) { 3841 case SoundEffectConstants.CLICK: 3842 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 3843 return; 3844 case SoundEffectConstants.NAVIGATION_DOWN: 3845 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 3846 return; 3847 case SoundEffectConstants.NAVIGATION_LEFT: 3848 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 3849 return; 3850 case SoundEffectConstants.NAVIGATION_RIGHT: 3851 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 3852 return; 3853 case SoundEffectConstants.NAVIGATION_UP: 3854 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 3855 return; 3856 default: 3857 throw new IllegalArgumentException("unknown effect id " + effectId + 3858 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 3859 } 3860 } catch (IllegalStateException e) { 3861 // Exception thrown by getAudioManager() when mView is null 3862 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 3863 e.printStackTrace(); 3864 } 3865 } 3866 3867 /** 3868 * {@inheritDoc} 3869 */ 3870 public boolean performHapticFeedback(int effectId, boolean always) { 3871 try { 3872 return sWindowSession.performHapticFeedback(mWindow, effectId, always); 3873 } catch (RemoteException e) { 3874 return false; 3875 } 3876 } 3877 3878 /** 3879 * {@inheritDoc} 3880 */ 3881 public View focusSearch(View focused, int direction) { 3882 checkThread(); 3883 if (!(mView instanceof ViewGroup)) { 3884 return null; 3885 } 3886 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 3887 } 3888 3889 public void debug() { 3890 mView.debug(); 3891 } 3892 3893 public void dumpGfxInfo(int[] info) { 3894 if (mView != null) { 3895 getGfxInfo(mView, info); 3896 } else { 3897 info[0] = info[1] = 0; 3898 } 3899 } 3900 3901 private static void getGfxInfo(View view, int[] info) { 3902 DisplayList displayList = view.mDisplayList; 3903 info[0]++; 3904 if (displayList != null) { 3905 info[1] += displayList.getSize(); 3906 } 3907 3908 if (view instanceof ViewGroup) { 3909 ViewGroup group = (ViewGroup) view; 3910 3911 int count = group.getChildCount(); 3912 for (int i = 0; i < count; i++) { 3913 getGfxInfo(group.getChildAt(i), info); 3914 } 3915 } 3916 } 3917 3918 public void die(boolean immediate) { 3919 if (immediate) { 3920 doDie(); 3921 } else { 3922 destroyHardwareRenderer(); 3923 mHandler.sendEmptyMessage(MSG_DIE); 3924 } 3925 } 3926 3927 void doDie() { 3928 checkThread(); 3929 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 3930 synchronized (this) { 3931 if (mAdded) { 3932 dispatchDetachedFromWindow(); 3933 } 3934 3935 if (mAdded && !mFirst) { 3936 destroyHardwareRenderer(); 3937 3938 if (mView != null) { 3939 int viewVisibility = mView.getVisibility(); 3940 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 3941 if (mWindowAttributesChanged || viewVisibilityChanged) { 3942 // If layout params have been changed, first give them 3943 // to the window manager to make sure it has the correct 3944 // animation info. 3945 try { 3946 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 3947 & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 3948 sWindowSession.finishDrawing(mWindow); 3949 } 3950 } catch (RemoteException e) { 3951 } 3952 } 3953 3954 mSurface.release(); 3955 } 3956 } 3957 3958 mAdded = false; 3959 } 3960 } 3961 3962 public void requestUpdateConfiguration(Configuration config) { 3963 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 3964 mHandler.sendMessage(msg); 3965 } 3966 3967 private void destroyHardwareRenderer() { 3968 AttachInfo attachInfo = mAttachInfo; 3969 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 3970 3971 if (hardwareRenderer != null) { 3972 if (mView != null) { 3973 hardwareRenderer.destroyHardwareResources(mView); 3974 } 3975 hardwareRenderer.destroy(true); 3976 hardwareRenderer.setRequested(false); 3977 3978 attachInfo.mHardwareRenderer = null; 3979 attachInfo.mHardwareAccelerated = false; 3980 } 3981 } 3982 3983 void dispatchImeFinishedEvent(int seq, boolean handled) { 3984 Message msg = mHandler.obtainMessage(MSG_IME_FINISHED_EVENT); 3985 msg.arg1 = seq; 3986 msg.arg2 = handled ? 1 : 0; 3987 msg.setAsynchronous(true); 3988 mHandler.sendMessage(msg); 3989 } 3990 3991 public void dispatchFinishInputConnection(InputConnection connection) { 3992 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 3993 mHandler.sendMessage(msg); 3994 } 3995 3996 public void dispatchResized(int w, int h, Rect coveredInsets, 3997 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 3998 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": w=" + w 3999 + " h=" + h + " coveredInsets=" + coveredInsets.toShortString() 4000 + " visibleInsets=" + visibleInsets.toShortString() 4001 + " reportDraw=" + reportDraw); 4002 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT :MSG_RESIZED); 4003 if (mTranslator != null) { 4004 mTranslator.translateRectInScreenToAppWindow(coveredInsets); 4005 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 4006 w *= mTranslator.applicationInvertedScale; 4007 h *= mTranslator.applicationInvertedScale; 4008 } 4009 msg.arg1 = w; 4010 msg.arg2 = h; 4011 ResizedInfo ri = new ResizedInfo(); 4012 ri.coveredInsets = new Rect(coveredInsets); 4013 ri.visibleInsets = new Rect(visibleInsets); 4014 ri.newConfig = newConfig; 4015 msg.obj = ri; 4016 mHandler.sendMessage(msg); 4017 } 4018 4019 /** 4020 * Represents a pending input event that is waiting in a queue. 4021 * 4022 * Input events are processed in serial order by the timestamp specified by 4023 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 4024 * one input event to the application at a time and waits for the application 4025 * to finish handling it before delivering the next one. 4026 * 4027 * However, because the application or IME can synthesize and inject multiple 4028 * key events at a time without going through the input dispatcher, we end up 4029 * needing a queue on the application's side. 4030 */ 4031 private static final class QueuedInputEvent { 4032 public static final int FLAG_DELIVER_POST_IME = 1; 4033 4034 public QueuedInputEvent mNext; 4035 4036 public InputEvent mEvent; 4037 public InputEventReceiver mReceiver; 4038 public int mFlags; 4039 4040 // Used for latency calculations. 4041 public long mReceiveTimeNanos; 4042 public long mDeliverTimeNanos; 4043 public long mDeliverPostImeTimeNanos; 4044 } 4045 4046 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 4047 InputEventReceiver receiver, int flags) { 4048 QueuedInputEvent q = mQueuedInputEventPool; 4049 if (q != null) { 4050 mQueuedInputEventPoolSize -= 1; 4051 mQueuedInputEventPool = q.mNext; 4052 q.mNext = null; 4053 } else { 4054 q = new QueuedInputEvent(); 4055 } 4056 4057 q.mEvent = event; 4058 q.mReceiver = receiver; 4059 q.mFlags = flags; 4060 return q; 4061 } 4062 4063 private void recycleQueuedInputEvent(QueuedInputEvent q) { 4064 q.mEvent = null; 4065 q.mReceiver = null; 4066 4067 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 4068 mQueuedInputEventPoolSize += 1; 4069 q.mNext = mQueuedInputEventPool; 4070 mQueuedInputEventPool = q; 4071 } 4072 } 4073 4074 void enqueueInputEvent(InputEvent event) { 4075 enqueueInputEvent(event, null, 0, false); 4076 } 4077 4078 void enqueueInputEvent(InputEvent event, 4079 InputEventReceiver receiver, int flags, boolean processImmediately) { 4080 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 4081 4082 if (ViewDebug.DEBUG_LATENCY) { 4083 q.mReceiveTimeNanos = System.nanoTime(); 4084 q.mDeliverTimeNanos = 0; 4085 q.mDeliverPostImeTimeNanos = 0; 4086 } 4087 4088 // Always enqueue the input event in order, regardless of its time stamp. 4089 // We do this because the application or the IME may inject key events 4090 // in response to touch events and we want to ensure that the injected keys 4091 // are processed in the order they were received and we cannot trust that 4092 // the time stamp of injected events are monotonic. 4093 QueuedInputEvent last = mFirstPendingInputEvent; 4094 if (last == null) { 4095 mFirstPendingInputEvent = q; 4096 } else { 4097 while (last.mNext != null) { 4098 last = last.mNext; 4099 } 4100 last.mNext = q; 4101 } 4102 4103 if (processImmediately) { 4104 doProcessInputEvents(); 4105 } else { 4106 scheduleProcessInputEvents(); 4107 } 4108 } 4109 4110 private void scheduleProcessInputEvents() { 4111 if (!mProcessInputEventsScheduled) { 4112 mProcessInputEventsScheduled = true; 4113 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 4114 msg.setAsynchronous(true); 4115 mHandler.sendMessage(msg); 4116 } 4117 } 4118 4119 void doProcessInputEvents() { 4120 while (mCurrentInputEvent == null && mFirstPendingInputEvent != null) { 4121 QueuedInputEvent q = mFirstPendingInputEvent; 4122 mFirstPendingInputEvent = q.mNext; 4123 q.mNext = null; 4124 mCurrentInputEvent = q; 4125 deliverInputEvent(q); 4126 } 4127 4128 // We are done processing all input events that we can process right now 4129 // so we can clear the pending flag immediately. 4130 if (mProcessInputEventsScheduled) { 4131 mProcessInputEventsScheduled = false; 4132 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 4133 } 4134 } 4135 4136 private void finishInputEvent(QueuedInputEvent q, boolean handled) { 4137 if (q != mCurrentInputEvent) { 4138 throw new IllegalStateException("finished input event out of order"); 4139 } 4140 4141 if (ViewDebug.DEBUG_LATENCY) { 4142 final long now = System.nanoTime(); 4143 final long eventTime = q.mEvent.getEventTimeNano(); 4144 final StringBuilder msg = new StringBuilder(); 4145 msg.append("Spent "); 4146 msg.append((now - q.mReceiveTimeNanos) * 0.000001f); 4147 msg.append("ms processing "); 4148 if (q.mEvent instanceof KeyEvent) { 4149 final KeyEvent keyEvent = (KeyEvent)q.mEvent; 4150 msg.append("key event, action="); 4151 msg.append(KeyEvent.actionToString(keyEvent.getAction())); 4152 } else { 4153 final MotionEvent motionEvent = (MotionEvent)q.mEvent; 4154 msg.append("motion event, action="); 4155 msg.append(MotionEvent.actionToString(motionEvent.getAction())); 4156 msg.append(", historySize="); 4157 msg.append(motionEvent.getHistorySize()); 4158 } 4159 msg.append(", handled="); 4160 msg.append(handled); 4161 msg.append(", received at +"); 4162 msg.append((q.mReceiveTimeNanos - eventTime) * 0.000001f); 4163 if (q.mDeliverTimeNanos != 0) { 4164 msg.append("ms, delivered at +"); 4165 msg.append((q.mDeliverTimeNanos - eventTime) * 0.000001f); 4166 } 4167 if (q.mDeliverPostImeTimeNanos != 0) { 4168 msg.append("ms, delivered post IME at +"); 4169 msg.append((q.mDeliverPostImeTimeNanos - eventTime) * 0.000001f); 4170 } 4171 msg.append("ms, finished at +"); 4172 msg.append((now - eventTime) * 0.000001f); 4173 msg.append("ms."); 4174 Log.d(ViewDebug.DEBUG_LATENCY_TAG, msg.toString()); 4175 } 4176 4177 if (q.mReceiver != null) { 4178 q.mReceiver.finishInputEvent(q.mEvent, handled); 4179 } else { 4180 q.mEvent.recycleIfNeededAfterDispatch(); 4181 } 4182 4183 recycleQueuedInputEvent(q); 4184 4185 mCurrentInputEvent = null; 4186 if (mFirstPendingInputEvent != null) { 4187 scheduleProcessInputEvents(); 4188 } 4189 } 4190 4191 void scheduleConsumeBatchedInput() { 4192 if (!mConsumeBatchedInputScheduled) { 4193 mConsumeBatchedInputScheduled = true; 4194 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 4195 mConsumedBatchedInputRunnable, null); 4196 } 4197 } 4198 4199 void unscheduleConsumeBatchedInput() { 4200 if (mConsumeBatchedInputScheduled) { 4201 mConsumeBatchedInputScheduled = false; 4202 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 4203 mConsumedBatchedInputRunnable, null); 4204 } 4205 } 4206 4207 void doConsumeBatchedInput() { 4208 if (mConsumeBatchedInputScheduled) { 4209 mConsumeBatchedInputScheduled = false; 4210 if (mInputEventReceiver != null) { 4211 mInputEventReceiver.consumeBatchedInputEvents(); 4212 } 4213 doProcessInputEvents(); 4214 } 4215 } 4216 4217 final class TraversalRunnable implements Runnable { 4218 @Override 4219 public void run() { 4220 doTraversal(); 4221 } 4222 } 4223 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 4224 4225 final class WindowInputEventReceiver extends InputEventReceiver { 4226 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 4227 super(inputChannel, looper); 4228 } 4229 4230 @Override 4231 public void onInputEvent(InputEvent event) { 4232 enqueueInputEvent(event, this, 0, true); 4233 } 4234 4235 @Override 4236 public void onBatchedInputEventPending() { 4237 scheduleConsumeBatchedInput(); 4238 } 4239 4240 @Override 4241 public void dispose() { 4242 unscheduleConsumeBatchedInput(); 4243 super.dispose(); 4244 } 4245 } 4246 WindowInputEventReceiver mInputEventReceiver; 4247 4248 final class ConsumeBatchedInputRunnable implements Runnable { 4249 @Override 4250 public void run() { 4251 doConsumeBatchedInput(); 4252 } 4253 } 4254 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 4255 new ConsumeBatchedInputRunnable(); 4256 boolean mConsumeBatchedInputScheduled; 4257 4258 final class InvalidateOnAnimationRunnable implements Runnable { 4259 private boolean mPosted; 4260 private ArrayList<View> mViews = new ArrayList<View>(); 4261 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 4262 new ArrayList<AttachInfo.InvalidateInfo>(); 4263 private View[] mTempViews; 4264 private AttachInfo.InvalidateInfo[] mTempViewRects; 4265 4266 public void addView(View view) { 4267 synchronized (this) { 4268 mViews.add(view); 4269 postIfNeededLocked(); 4270 } 4271 } 4272 4273 public void addViewRect(AttachInfo.InvalidateInfo info) { 4274 synchronized (this) { 4275 mViewRects.add(info); 4276 postIfNeededLocked(); 4277 } 4278 } 4279 4280 public void removeView(View view) { 4281 synchronized (this) { 4282 mViews.remove(view); 4283 4284 for (int i = mViewRects.size(); i-- > 0; ) { 4285 AttachInfo.InvalidateInfo info = mViewRects.get(i); 4286 if (info.target == view) { 4287 mViewRects.remove(i); 4288 info.release(); 4289 } 4290 } 4291 4292 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 4293 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 4294 mPosted = false; 4295 } 4296 } 4297 } 4298 4299 @Override 4300 public void run() { 4301 final int viewCount; 4302 final int viewRectCount; 4303 synchronized (this) { 4304 mPosted = false; 4305 4306 viewCount = mViews.size(); 4307 if (viewCount != 0) { 4308 mTempViews = mViews.toArray(mTempViews != null 4309 ? mTempViews : new View[viewCount]); 4310 mViews.clear(); 4311 } 4312 4313 viewRectCount = mViewRects.size(); 4314 if (viewRectCount != 0) { 4315 mTempViewRects = mViewRects.toArray(mTempViewRects != null 4316 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 4317 mViewRects.clear(); 4318 } 4319 } 4320 4321 for (int i = 0; i < viewCount; i++) { 4322 mTempViews[i].invalidate(); 4323 } 4324 4325 for (int i = 0; i < viewRectCount; i++) { 4326 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 4327 info.target.invalidate(info.left, info.top, info.right, info.bottom); 4328 info.release(); 4329 } 4330 } 4331 4332 private void postIfNeededLocked() { 4333 if (!mPosted) { 4334 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 4335 mPosted = true; 4336 } 4337 } 4338 } 4339 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 4340 new InvalidateOnAnimationRunnable(); 4341 4342 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 4343 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 4344 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4345 } 4346 4347 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 4348 long delayMilliseconds) { 4349 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 4350 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4351 } 4352 4353 public void dispatchInvalidateOnAnimation(View view) { 4354 mInvalidateOnAnimationRunnable.addView(view); 4355 } 4356 4357 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 4358 mInvalidateOnAnimationRunnable.addViewRect(info); 4359 } 4360 4361 public void invalidateDisplayList(DisplayList displayList) { 4362 mDisplayLists.add(displayList); 4363 4364 mHandler.removeMessages(MSG_INVALIDATE_DISPLAY_LIST); 4365 Message msg = mHandler.obtainMessage(MSG_INVALIDATE_DISPLAY_LIST); 4366 mHandler.sendMessage(msg); 4367 } 4368 4369 public void cancelInvalidate(View view) { 4370 mHandler.removeMessages(MSG_INVALIDATE, view); 4371 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 4372 // them to the pool 4373 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 4374 mInvalidateOnAnimationRunnable.removeView(view); 4375 } 4376 4377 public void dispatchKey(KeyEvent event) { 4378 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 4379 msg.setAsynchronous(true); 4380 mHandler.sendMessage(msg); 4381 } 4382 4383 public void dispatchKeyFromIme(KeyEvent event) { 4384 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 4385 msg.setAsynchronous(true); 4386 mHandler.sendMessage(msg); 4387 } 4388 4389 public void dispatchUnhandledKey(KeyEvent event) { 4390 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 4391 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 4392 final int keyCode = event.getKeyCode(); 4393 final int metaState = event.getMetaState(); 4394 4395 KeyEvent fallbackEvent = null; 4396 synchronized (mFallbackAction) { 4397 // Check for fallback actions specified by the key character map. 4398 if (kcm.getFallbackAction(keyCode, metaState, mFallbackAction)) { 4399 int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 4400 fallbackEvent = KeyEvent.obtain( 4401 event.getDownTime(), event.getEventTime(), 4402 event.getAction(), mFallbackAction.keyCode, 4403 event.getRepeatCount(), mFallbackAction.metaState, 4404 event.getDeviceId(), event.getScanCode(), 4405 flags, event.getSource(), null); 4406 } 4407 } 4408 if (fallbackEvent != null) { 4409 dispatchKey(fallbackEvent); 4410 } 4411 } 4412 } 4413 4414 public void dispatchAppVisibility(boolean visible) { 4415 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 4416 msg.arg1 = visible ? 1 : 0; 4417 mHandler.sendMessage(msg); 4418 } 4419 4420 public void dispatchScreenStateChange(boolean on) { 4421 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 4422 msg.arg1 = on ? 1 : 0; 4423 mHandler.sendMessage(msg); 4424 } 4425 4426 public void dispatchGetNewSurface() { 4427 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 4428 mHandler.sendMessage(msg); 4429 } 4430 4431 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4432 Message msg = Message.obtain(); 4433 msg.what = MSG_WINDOW_FOCUS_CHANGED; 4434 msg.arg1 = hasFocus ? 1 : 0; 4435 msg.arg2 = inTouchMode ? 1 : 0; 4436 mHandler.sendMessage(msg); 4437 } 4438 4439 public void dispatchCloseSystemDialogs(String reason) { 4440 Message msg = Message.obtain(); 4441 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 4442 msg.obj = reason; 4443 mHandler.sendMessage(msg); 4444 } 4445 4446 public void dispatchDragEvent(DragEvent event) { 4447 final int what; 4448 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 4449 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 4450 mHandler.removeMessages(what); 4451 } else { 4452 what = MSG_DISPATCH_DRAG_EVENT; 4453 } 4454 Message msg = mHandler.obtainMessage(what, event); 4455 mHandler.sendMessage(msg); 4456 } 4457 4458 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4459 int localValue, int localChanges) { 4460 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 4461 args.seq = seq; 4462 args.globalVisibility = globalVisibility; 4463 args.localValue = localValue; 4464 args.localChanges = localChanges; 4465 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 4466 } 4467 4468 public void dispatchCheckFocus() { 4469 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 4470 // This will result in a call to checkFocus() below. 4471 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 4472 } 4473 } 4474 4475 /** 4476 * Post a callback to send a 4477 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4478 * This event is send at most once every 4479 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 4480 */ 4481 private void postSendWindowContentChangedCallback(View source) { 4482 if (mSendWindowContentChangedAccessibilityEvent == null) { 4483 mSendWindowContentChangedAccessibilityEvent = 4484 new SendWindowContentChangedAccessibilityEvent(); 4485 } 4486 View oldSource = mSendWindowContentChangedAccessibilityEvent.mSource; 4487 if (oldSource == null) { 4488 mSendWindowContentChangedAccessibilityEvent.mSource = source; 4489 mHandler.postDelayed(mSendWindowContentChangedAccessibilityEvent, 4490 ViewConfiguration.getSendRecurringAccessibilityEventsInterval()); 4491 } else { 4492 mSendWindowContentChangedAccessibilityEvent.mSource = 4493 getCommonPredecessor(oldSource, source); 4494 } 4495 } 4496 4497 /** 4498 * Remove a posted callback to send a 4499 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4500 */ 4501 private void removeSendWindowContentChangedCallback() { 4502 if (mSendWindowContentChangedAccessibilityEvent != null) { 4503 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 4504 } 4505 } 4506 4507 public boolean showContextMenuForChild(View originalView) { 4508 return false; 4509 } 4510 4511 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 4512 return null; 4513 } 4514 4515 public void createContextMenu(ContextMenu menu) { 4516 } 4517 4518 public void childDrawableStateChanged(View child) { 4519 } 4520 4521 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 4522 if (mView == null) { 4523 return false; 4524 } 4525 mAccessibilityManager.sendAccessibilityEvent(event); 4526 return true; 4527 } 4528 4529 @Override 4530 public void childAccessibilityStateChanged(View child) { 4531 postSendWindowContentChangedCallback(child); 4532 } 4533 4534 private View getCommonPredecessor(View first, View second) { 4535 if (mAttachInfo != null) { 4536 if (mTempHashSet == null) { 4537 mTempHashSet = new HashSet<View>(); 4538 } 4539 HashSet<View> seen = mTempHashSet; 4540 seen.clear(); 4541 View firstCurrent = first; 4542 while (firstCurrent != null) { 4543 seen.add(firstCurrent); 4544 ViewParent firstCurrentParent = firstCurrent.mParent; 4545 if (firstCurrentParent instanceof View) { 4546 firstCurrent = (View) firstCurrentParent; 4547 } else { 4548 firstCurrent = null; 4549 } 4550 } 4551 View secondCurrent = second; 4552 while (secondCurrent != null) { 4553 if (seen.contains(secondCurrent)) { 4554 seen.clear(); 4555 return secondCurrent; 4556 } 4557 ViewParent secondCurrentParent = secondCurrent.mParent; 4558 if (secondCurrentParent instanceof View) { 4559 secondCurrent = (View) secondCurrentParent; 4560 } else { 4561 secondCurrent = null; 4562 } 4563 } 4564 seen.clear(); 4565 } 4566 return null; 4567 } 4568 4569 void checkThread() { 4570 if (mThread != Thread.currentThread()) { 4571 throw new CalledFromWrongThreadException( 4572 "Only the original thread that created a view hierarchy can touch its views."); 4573 } 4574 } 4575 4576 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 4577 // ViewAncestor never intercepts touch event, so this can be a no-op 4578 } 4579 4580 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, 4581 boolean immediate) { 4582 return scrollToRectOrFocus(rectangle, immediate); 4583 } 4584 4585 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 4586 // Do nothing. 4587 } 4588 4589 class TakenSurfaceHolder extends BaseSurfaceHolder { 4590 @Override 4591 public boolean onAllowLockCanvas() { 4592 return mDrawingAllowed; 4593 } 4594 4595 @Override 4596 public void onRelayoutContainer() { 4597 // Not currently interesting -- from changing between fixed and layout size. 4598 } 4599 4600 public void setFormat(int format) { 4601 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 4602 } 4603 4604 public void setType(int type) { 4605 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 4606 } 4607 4608 @Override 4609 public void onUpdateSurface() { 4610 // We take care of format and type changes on our own. 4611 throw new IllegalStateException("Shouldn't be here"); 4612 } 4613 4614 public boolean isCreating() { 4615 return mIsCreating; 4616 } 4617 4618 @Override 4619 public void setFixedSize(int width, int height) { 4620 throw new UnsupportedOperationException( 4621 "Currently only support sizing from layout"); 4622 } 4623 4624 public void setKeepScreenOn(boolean screenOn) { 4625 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 4626 } 4627 } 4628 4629 static class InputMethodCallback extends IInputMethodCallback.Stub { 4630 private WeakReference<ViewRootImpl> mViewAncestor; 4631 4632 public InputMethodCallback(ViewRootImpl viewAncestor) { 4633 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4634 } 4635 4636 public void finishedEvent(int seq, boolean handled) { 4637 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4638 if (viewAncestor != null) { 4639 viewAncestor.dispatchImeFinishedEvent(seq, handled); 4640 } 4641 } 4642 4643 public void sessionCreated(IInputMethodSession session) { 4644 // Stub -- not for use in the client. 4645 } 4646 } 4647 4648 static class W extends IWindow.Stub { 4649 private final WeakReference<ViewRootImpl> mViewAncestor; 4650 4651 W(ViewRootImpl viewAncestor) { 4652 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4653 } 4654 4655 public void resized(int w, int h, Rect coveredInsets, Rect visibleInsets, 4656 boolean reportDraw, Configuration newConfig) { 4657 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4658 if (viewAncestor != null) { 4659 viewAncestor.dispatchResized(w, h, coveredInsets, visibleInsets, reportDraw, 4660 newConfig); 4661 } 4662 } 4663 4664 public void dispatchAppVisibility(boolean visible) { 4665 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4666 if (viewAncestor != null) { 4667 viewAncestor.dispatchAppVisibility(visible); 4668 } 4669 } 4670 4671 public void dispatchScreenState(boolean on) { 4672 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4673 if (viewAncestor != null) { 4674 viewAncestor.dispatchScreenStateChange(on); 4675 } 4676 } 4677 4678 public void dispatchGetNewSurface() { 4679 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4680 if (viewAncestor != null) { 4681 viewAncestor.dispatchGetNewSurface(); 4682 } 4683 } 4684 4685 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4686 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4687 if (viewAncestor != null) { 4688 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 4689 } 4690 } 4691 4692 private static int checkCallingPermission(String permission) { 4693 try { 4694 return ActivityManagerNative.getDefault().checkPermission( 4695 permission, Binder.getCallingPid(), Binder.getCallingUid()); 4696 } catch (RemoteException e) { 4697 return PackageManager.PERMISSION_DENIED; 4698 } 4699 } 4700 4701 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 4702 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4703 if (viewAncestor != null) { 4704 final View view = viewAncestor.mView; 4705 if (view != null) { 4706 if (checkCallingPermission(Manifest.permission.DUMP) != 4707 PackageManager.PERMISSION_GRANTED) { 4708 throw new SecurityException("Insufficient permissions to invoke" 4709 + " executeCommand() from pid=" + Binder.getCallingPid() 4710 + ", uid=" + Binder.getCallingUid()); 4711 } 4712 4713 OutputStream clientStream = null; 4714 try { 4715 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 4716 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 4717 } catch (IOException e) { 4718 e.printStackTrace(); 4719 } finally { 4720 if (clientStream != null) { 4721 try { 4722 clientStream.close(); 4723 } catch (IOException e) { 4724 e.printStackTrace(); 4725 } 4726 } 4727 } 4728 } 4729 } 4730 } 4731 4732 public void closeSystemDialogs(String reason) { 4733 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4734 if (viewAncestor != null) { 4735 viewAncestor.dispatchCloseSystemDialogs(reason); 4736 } 4737 } 4738 4739 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 4740 boolean sync) { 4741 if (sync) { 4742 try { 4743 sWindowSession.wallpaperOffsetsComplete(asBinder()); 4744 } catch (RemoteException e) { 4745 } 4746 } 4747 } 4748 4749 public void dispatchWallpaperCommand(String action, int x, int y, 4750 int z, Bundle extras, boolean sync) { 4751 if (sync) { 4752 try { 4753 sWindowSession.wallpaperCommandComplete(asBinder(), null); 4754 } catch (RemoteException e) { 4755 } 4756 } 4757 } 4758 4759 /* Drag/drop */ 4760 public void dispatchDragEvent(DragEvent event) { 4761 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4762 if (viewAncestor != null) { 4763 viewAncestor.dispatchDragEvent(event); 4764 } 4765 } 4766 4767 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4768 int localValue, int localChanges) { 4769 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4770 if (viewAncestor != null) { 4771 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 4772 localValue, localChanges); 4773 } 4774 } 4775 } 4776 4777 /** 4778 * Maintains state information for a single trackball axis, generating 4779 * discrete (DPAD) movements based on raw trackball motion. 4780 */ 4781 static final class TrackballAxis { 4782 /** 4783 * The maximum amount of acceleration we will apply. 4784 */ 4785 static final float MAX_ACCELERATION = 20; 4786 4787 /** 4788 * The maximum amount of time (in milliseconds) between events in order 4789 * for us to consider the user to be doing fast trackball movements, 4790 * and thus apply an acceleration. 4791 */ 4792 static final long FAST_MOVE_TIME = 150; 4793 4794 /** 4795 * Scaling factor to the time (in milliseconds) between events to how 4796 * much to multiple/divide the current acceleration. When movement 4797 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4798 * FAST_MOVE_TIME it divides it. 4799 */ 4800 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4801 4802 float position; 4803 float absPosition; 4804 float acceleration = 1; 4805 long lastMoveTime = 0; 4806 int step; 4807 int dir; 4808 int nonAccelMovement; 4809 4810 void reset(int _step) { 4811 position = 0; 4812 acceleration = 1; 4813 lastMoveTime = 0; 4814 step = _step; 4815 dir = 0; 4816 } 4817 4818 /** 4819 * Add trackball movement into the state. If the direction of movement 4820 * has been reversed, the state is reset before adding the 4821 * movement (so that you don't have to compensate for any previously 4822 * collected movement before see the result of the movement in the 4823 * new direction). 4824 * 4825 * @return Returns the absolute value of the amount of movement 4826 * collected so far. 4827 */ 4828 float collect(float off, long time, String axis) { 4829 long normTime; 4830 if (off > 0) { 4831 normTime = (long)(off * FAST_MOVE_TIME); 4832 if (dir < 0) { 4833 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4834 position = 0; 4835 step = 0; 4836 acceleration = 1; 4837 lastMoveTime = 0; 4838 } 4839 dir = 1; 4840 } else if (off < 0) { 4841 normTime = (long)((-off) * FAST_MOVE_TIME); 4842 if (dir > 0) { 4843 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4844 position = 0; 4845 step = 0; 4846 acceleration = 1; 4847 lastMoveTime = 0; 4848 } 4849 dir = -1; 4850 } else { 4851 normTime = 0; 4852 } 4853 4854 // The number of milliseconds between each movement that is 4855 // considered "normal" and will not result in any acceleration 4856 // or deceleration, scaled by the offset we have here. 4857 if (normTime > 0) { 4858 long delta = time - lastMoveTime; 4859 lastMoveTime = time; 4860 float acc = acceleration; 4861 if (delta < normTime) { 4862 // The user is scrolling rapidly, so increase acceleration. 4863 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4864 if (scale > 1) acc *= scale; 4865 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4866 + off + " normTime=" + normTime + " delta=" + delta 4867 + " scale=" + scale + " acc=" + acc); 4868 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4869 } else { 4870 // The user is scrolling slowly, so decrease acceleration. 4871 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4872 if (scale > 1) acc /= scale; 4873 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4874 + off + " normTime=" + normTime + " delta=" + delta 4875 + " scale=" + scale + " acc=" + acc); 4876 acceleration = acc > 1 ? acc : 1; 4877 } 4878 } 4879 position += off; 4880 return (absPosition = Math.abs(position)); 4881 } 4882 4883 /** 4884 * Generate the number of discrete movement events appropriate for 4885 * the currently collected trackball movement. 4886 * 4887 * @param precision The minimum movement required to generate the 4888 * first discrete movement. 4889 * 4890 * @return Returns the number of discrete movements, either positive 4891 * or negative, or 0 if there is not enough trackball movement yet 4892 * for a discrete movement. 4893 */ 4894 int generate(float precision) { 4895 int movement = 0; 4896 nonAccelMovement = 0; 4897 do { 4898 final int dir = position >= 0 ? 1 : -1; 4899 switch (step) { 4900 // If we are going to execute the first step, then we want 4901 // to do this as soon as possible instead of waiting for 4902 // a full movement, in order to make things look responsive. 4903 case 0: 4904 if (absPosition < precision) { 4905 return movement; 4906 } 4907 movement += dir; 4908 nonAccelMovement += dir; 4909 step = 1; 4910 break; 4911 // If we have generated the first movement, then we need 4912 // to wait for the second complete trackball motion before 4913 // generating the second discrete movement. 4914 case 1: 4915 if (absPosition < 2) { 4916 return movement; 4917 } 4918 movement += dir; 4919 nonAccelMovement += dir; 4920 position += dir > 0 ? -2 : 2; 4921 absPosition = Math.abs(position); 4922 step = 2; 4923 break; 4924 // After the first two, we generate discrete movements 4925 // consistently with the trackball, applying an acceleration 4926 // if the trackball is moving quickly. This is a simple 4927 // acceleration on top of what we already compute based 4928 // on how quickly the wheel is being turned, to apply 4929 // a longer increasing acceleration to continuous movement 4930 // in one direction. 4931 default: 4932 if (absPosition < 1) { 4933 return movement; 4934 } 4935 movement += dir; 4936 position += dir >= 0 ? -1 : 1; 4937 absPosition = Math.abs(position); 4938 float acc = acceleration; 4939 acc *= 1.1f; 4940 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4941 break; 4942 } 4943 } while (true); 4944 } 4945 } 4946 4947 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 4948 public CalledFromWrongThreadException(String msg) { 4949 super(msg); 4950 } 4951 } 4952 4953 private SurfaceHolder mHolder = new SurfaceHolder() { 4954 // we only need a SurfaceHolder for opengl. it would be nice 4955 // to implement everything else though, especially the callback 4956 // support (opengl doesn't make use of it right now, but eventually 4957 // will). 4958 public Surface getSurface() { 4959 return mSurface; 4960 } 4961 4962 public boolean isCreating() { 4963 return false; 4964 } 4965 4966 public void addCallback(Callback callback) { 4967 } 4968 4969 public void removeCallback(Callback callback) { 4970 } 4971 4972 public void setFixedSize(int width, int height) { 4973 } 4974 4975 public void setSizeFromLayout() { 4976 } 4977 4978 public void setFormat(int format) { 4979 } 4980 4981 public void setType(int type) { 4982 } 4983 4984 public void setKeepScreenOn(boolean screenOn) { 4985 } 4986 4987 public Canvas lockCanvas() { 4988 return null; 4989 } 4990 4991 public Canvas lockCanvas(Rect dirty) { 4992 return null; 4993 } 4994 4995 public void unlockCanvasAndPost(Canvas canvas) { 4996 } 4997 public Rect getSurfaceFrame() { 4998 return null; 4999 } 5000 }; 5001 5002 static RunQueue getRunQueue() { 5003 RunQueue rq = sRunQueues.get(); 5004 if (rq != null) { 5005 return rq; 5006 } 5007 rq = new RunQueue(); 5008 sRunQueues.set(rq); 5009 return rq; 5010 } 5011 5012 /** 5013 * The run queue is used to enqueue pending work from Views when no Handler is 5014 * attached. The work is executed during the next call to performTraversals on 5015 * the thread. 5016 * @hide 5017 */ 5018 static final class RunQueue { 5019 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 5020 5021 void post(Runnable action) { 5022 postDelayed(action, 0); 5023 } 5024 5025 void postDelayed(Runnable action, long delayMillis) { 5026 HandlerAction handlerAction = new HandlerAction(); 5027 handlerAction.action = action; 5028 handlerAction.delay = delayMillis; 5029 5030 synchronized (mActions) { 5031 mActions.add(handlerAction); 5032 } 5033 } 5034 5035 void removeCallbacks(Runnable action) { 5036 final HandlerAction handlerAction = new HandlerAction(); 5037 handlerAction.action = action; 5038 5039 synchronized (mActions) { 5040 final ArrayList<HandlerAction> actions = mActions; 5041 5042 while (actions.remove(handlerAction)) { 5043 // Keep going 5044 } 5045 } 5046 } 5047 5048 void executeActions(Handler handler) { 5049 synchronized (mActions) { 5050 final ArrayList<HandlerAction> actions = mActions; 5051 final int count = actions.size(); 5052 5053 for (int i = 0; i < count; i++) { 5054 final HandlerAction handlerAction = actions.get(i); 5055 handler.postDelayed(handlerAction.action, handlerAction.delay); 5056 } 5057 5058 actions.clear(); 5059 } 5060 } 5061 5062 private static class HandlerAction { 5063 Runnable action; 5064 long delay; 5065 5066 @Override 5067 public boolean equals(Object o) { 5068 if (this == o) return true; 5069 if (o == null || getClass() != o.getClass()) return false; 5070 5071 HandlerAction that = (HandlerAction) o; 5072 return !(action != null ? !action.equals(that.action) : that.action != null); 5073 5074 } 5075 5076 @Override 5077 public int hashCode() { 5078 int result = action != null ? action.hashCode() : 0; 5079 result = 31 * result + (int) (delay ^ (delay >>> 32)); 5080 return result; 5081 } 5082 } 5083 } 5084 5085 /** 5086 * Class for managing the accessibility interaction connection 5087 * based on the global accessibility state. 5088 */ 5089 final class AccessibilityInteractionConnectionManager 5090 implements AccessibilityStateChangeListener { 5091 public void onAccessibilityStateChanged(boolean enabled) { 5092 if (enabled) { 5093 ensureConnection(); 5094 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 5095 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 5096 View focusedView = mView.findFocus(); 5097 if (focusedView != null && focusedView != mView) { 5098 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 5099 } 5100 } 5101 } else { 5102 ensureNoConnection(); 5103 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 5104 } 5105 } 5106 5107 public void ensureConnection() { 5108 if (mAttachInfo != null) { 5109 final boolean registered = 5110 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 5111 if (!registered) { 5112 mAttachInfo.mAccessibilityWindowId = 5113 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 5114 new AccessibilityInteractionConnection(ViewRootImpl.this)); 5115 } 5116 } 5117 } 5118 5119 public void ensureNoConnection() { 5120 final boolean registered = 5121 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 5122 if (registered) { 5123 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 5124 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 5125 } 5126 } 5127 } 5128 5129 /** 5130 * This class is an interface this ViewAncestor provides to the 5131 * AccessibilityManagerService to the latter can interact with 5132 * the view hierarchy in this ViewAncestor. 5133 */ 5134 static final class AccessibilityInteractionConnection 5135 extends IAccessibilityInteractionConnection.Stub { 5136 private final WeakReference<ViewRootImpl> mViewRootImpl; 5137 5138 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 5139 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 5140 } 5141 5142 @Override 5143 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 5144 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5145 int flags, int interrogatingPid, long interrogatingTid) { 5146 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5147 if (viewRootImpl != null && viewRootImpl.mView != null) { 5148 viewRootImpl.getAccessibilityInteractionController() 5149 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 5150 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5151 } else { 5152 // We cannot make the call and notify the caller so it does not wait. 5153 try { 5154 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 5155 } catch (RemoteException re) { 5156 /* best effort - ignore */ 5157 } 5158 } 5159 } 5160 5161 @Override 5162 public void performAccessibilityAction(long accessibilityNodeId, int action, 5163 Bundle arguments, int interactionId, 5164 IAccessibilityInteractionConnectionCallback callback, int flags, 5165 int interogatingPid, long interrogatingTid) { 5166 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5167 if (viewRootImpl != null && viewRootImpl.mView != null) { 5168 viewRootImpl.getAccessibilityInteractionController() 5169 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 5170 interactionId, callback, flags, interogatingPid, interrogatingTid); 5171 } else { 5172 // We cannot make the call and notify the caller so it does not wait. 5173 try { 5174 callback.setPerformAccessibilityActionResult(false, interactionId); 5175 } catch (RemoteException re) { 5176 /* best effort - ignore */ 5177 } 5178 } 5179 } 5180 5181 @Override 5182 public void findAccessibilityNodeInfoByViewId(long accessibilityNodeId, int viewId, 5183 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5184 int flags, int interrogatingPid, long interrogatingTid) { 5185 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5186 if (viewRootImpl != null && viewRootImpl.mView != null) { 5187 viewRootImpl.getAccessibilityInteractionController() 5188 .findAccessibilityNodeInfoByViewIdClientThread(accessibilityNodeId, viewId, 5189 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5190 } else { 5191 // We cannot make the call and notify the caller so it does not wait. 5192 try { 5193 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5194 } catch (RemoteException re) { 5195 /* best effort - ignore */ 5196 } 5197 } 5198 } 5199 5200 @Override 5201 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 5202 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5203 int flags, int interrogatingPid, long interrogatingTid) { 5204 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5205 if (viewRootImpl != null && viewRootImpl.mView != null) { 5206 viewRootImpl.getAccessibilityInteractionController() 5207 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 5208 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5209 } else { 5210 // We cannot make the call and notify the caller so it does not wait. 5211 try { 5212 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 5213 } catch (RemoteException re) { 5214 /* best effort - ignore */ 5215 } 5216 } 5217 } 5218 5219 @Override 5220 public void findFocus(long accessibilityNodeId, int interactionId, int focusType, 5221 IAccessibilityInteractionConnectionCallback callback, int flags, 5222 int interrogatingPid, long interrogatingTid) { 5223 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5224 if (viewRootImpl != null && viewRootImpl.mView != null) { 5225 viewRootImpl.getAccessibilityInteractionController() 5226 .findFocusClientThread(accessibilityNodeId, interactionId, focusType, 5227 callback, flags, interrogatingPid, interrogatingTid); 5228 } else { 5229 // We cannot make the call and notify the caller so it does not wait. 5230 try { 5231 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5232 } catch (RemoteException re) { 5233 /* best effort - ignore */ 5234 } 5235 } 5236 } 5237 5238 @Override 5239 public void focusSearch(long accessibilityNodeId, int interactionId, int direction, 5240 IAccessibilityInteractionConnectionCallback callback, int flags, 5241 int interrogatingPid, long interrogatingTid) { 5242 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5243 if (viewRootImpl != null && viewRootImpl.mView != null) { 5244 viewRootImpl.getAccessibilityInteractionController() 5245 .focusSearchClientThread(accessibilityNodeId, interactionId, direction, 5246 callback, flags, interrogatingPid, interrogatingTid); 5247 } else { 5248 // We cannot make the call and notify the caller so it does not wait. 5249 try { 5250 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5251 } catch (RemoteException re) { 5252 /* best effort - ignore */ 5253 } 5254 } 5255 } 5256 } 5257 5258 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 5259 public View mSource; 5260 5261 public void run() { 5262 if (mSource != null) { 5263 mSource.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 5264 mSource.resetAccessibilityStateChanged(); 5265 mSource = null; 5266 } 5267 } 5268 } 5269} 5270