ViewRootImpl.java revision 5c58de3a523a384c47b0b1e0f5dd9728a74cd9f7
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 boolean mWindowsAnimating; 233 int mLastSystemUiVisibility; 234 235 // Pool of queued input events. 236 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 237 private QueuedInputEvent mQueuedInputEventPool; 238 private int mQueuedInputEventPoolSize; 239 240 // Input event queue. 241 QueuedInputEvent mFirstPendingInputEvent; 242 QueuedInputEvent mCurrentInputEvent; 243 boolean mProcessInputEventsScheduled; 244 245 boolean mWindowAttributesChanged = false; 246 int mWindowAttributesChangesFlag = 0; 247 248 // These can be accessed by any thread, must be protected with a lock. 249 // Surface can never be reassigned or cleared (use Surface.clear()). 250 private final Surface mSurface = new Surface(); 251 252 boolean mAdded; 253 boolean mAddedTouchMode; 254 255 CompatibilityInfoHolder mCompatibilityInfo; 256 257 /*package*/ int mAddNesting; 258 259 // These are accessed by multiple threads. 260 final Rect mWinFrame; // frame given by window manager. 261 262 final Rect mPendingVisibleInsets = new Rect(); 263 final Rect mPendingContentInsets = new Rect(); 264 final Rect mPendingSystemInsets = new Rect(); 265 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 266 = new ViewTreeObserver.InternalInsetsInfo(); 267 268 final Rect mFitSystemWindowsInsets = new Rect(); 269 270 final Configuration mLastConfiguration = new Configuration(); 271 final Configuration mPendingConfiguration = new Configuration(); 272 273 class ResizedInfo { 274 Rect coveredInsets; 275 Rect visibleInsets; 276 Configuration newConfig; 277 } 278 279 boolean mScrollMayChange; 280 int mSoftInputMode; 281 View mLastScrolledFocus; 282 int mScrollY; 283 int mCurScrollY; 284 Scroller mScroller; 285 HardwareLayer mResizeBuffer; 286 long mResizeBufferStartTime; 287 int mResizeBufferDuration; 288 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 289 private ArrayList<LayoutTransition> mPendingTransitions; 290 291 final ViewConfiguration mViewConfiguration; 292 293 /* Drag/drop */ 294 ClipDescription mDragDescription; 295 View mCurrentDragView; 296 volatile Object mLocalDragState; 297 final PointF mDragPoint = new PointF(); 298 final PointF mLastTouchPoint = new PointF(); 299 300 private boolean mProfileRendering; 301 private Thread mRenderProfiler; 302 private volatile boolean mRenderProfilingEnabled; 303 304 // Variables to track frames per second, enabled via DEBUG_FPS flag 305 private long mFpsStartTime = -1; 306 private long mFpsPrevTime = -1; 307 private int mFpsNumFrames; 308 309 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(24); 310 311 /** 312 * see {@link #playSoundEffect(int)} 313 */ 314 AudioManager mAudioManager; 315 316 final AccessibilityManager mAccessibilityManager; 317 318 AccessibilityInteractionController mAccessibilityInteractionController; 319 320 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 321 322 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 323 324 HashSet<View> mTempHashSet; 325 326 private final int mDensity; 327 328 final KeyCharacterMap.FallbackAction mFallbackAction = new KeyCharacterMap.FallbackAction(); 329 330 /** 331 * Consistency verifier for debugging purposes. 332 */ 333 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 334 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 335 new InputEventConsistencyVerifier(this, 0) : null; 336 337 public static IWindowSession getWindowSession(Looper mainLooper) { 338 synchronized (mStaticInit) { 339 if (!mInitialized) { 340 try { 341 InputMethodManager imm = InputMethodManager.getInstance(mainLooper); 342 IWindowManager windowManager = Display.getWindowManager(); 343 sWindowSession = windowManager.openSession( 344 imm.getClient(), imm.getInputContext()); 345 float animatorScale = windowManager.getAnimationScale(2); 346 ValueAnimator.setDurationScale(animatorScale); 347 mInitialized = true; 348 } catch (RemoteException e) { 349 } 350 } 351 return sWindowSession; 352 } 353 } 354 355 static final class SystemUiVisibilityInfo { 356 int seq; 357 int globalVisibility; 358 int localValue; 359 int localChanges; 360 } 361 362 public ViewRootImpl(Context context) { 363 super(); 364 365 if (MEASURE_LATENCY) { 366 if (lt == null) { 367 lt = new LatencyTimer(100, 1000); 368 } 369 } 370 371 // Initialize the statics when this class is first instantiated. This is 372 // done here instead of in the static block because Zygote does not 373 // allow the spawning of threads. 374 getWindowSession(context.getMainLooper()); 375 376 mThread = Thread.currentThread(); 377 mLocation = new WindowLeaked(null); 378 mLocation.fillInStackTrace(); 379 mWidth = -1; 380 mHeight = -1; 381 mDirty = new Rect(); 382 mTempRect = new Rect(); 383 mVisRect = new Rect(); 384 mWinFrame = new Rect(); 385 mWindow = new W(this); 386 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 387 mInputMethodCallback = new InputMethodCallback(this); 388 mViewVisibility = View.GONE; 389 mTransparentRegion = new Region(); 390 mPreviousTransparentRegion = new Region(); 391 mFirst = true; // true for the first time the view is added 392 mAdded = false; 393 mAccessibilityManager = AccessibilityManager.getInstance(context); 394 mAccessibilityInteractionConnectionManager = 395 new AccessibilityInteractionConnectionManager(); 396 mAccessibilityManager.addAccessibilityStateChangeListener( 397 mAccessibilityInteractionConnectionManager); 398 mAttachInfo = new View.AttachInfo(sWindowSession, mWindow, this, mHandler, this); 399 mViewConfiguration = ViewConfiguration.get(context); 400 mDensity = context.getResources().getDisplayMetrics().densityDpi; 401 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 402 mProfileRendering = Boolean.parseBoolean( 403 SystemProperties.get(PROPERTY_PROFILE_RENDERING, "false")); 404 mChoreographer = Choreographer.getInstance(); 405 406 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 407 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 408 } 409 410 /** 411 * @return True if the application requests the use of a separate render thread, 412 * false otherwise 413 */ 414 private static boolean isRenderThreadRequested(Context context) { 415 if (USE_RENDER_THREAD) { 416 synchronized (sRenderThreadQueryLock) { 417 if (!sRenderThreadQueried) { 418 final PackageManager packageManager = context.getPackageManager(); 419 final String packageName = context.getApplicationInfo().packageName; 420 try { 421 ApplicationInfo applicationInfo = packageManager.getApplicationInfo(packageName, 422 PackageManager.GET_META_DATA); 423 if (applicationInfo.metaData != null) { 424 sUseRenderThread = applicationInfo.metaData.getBoolean( 425 "android.graphics.renderThread", false); 426 } 427 } catch (PackageManager.NameNotFoundException e) { 428 } finally { 429 sRenderThreadQueried = true; 430 } 431 } 432 return sUseRenderThread; 433 } 434 } else { 435 return false; 436 } 437 } 438 439 public static void addFirstDrawHandler(Runnable callback) { 440 synchronized (sFirstDrawHandlers) { 441 if (!sFirstDrawComplete) { 442 sFirstDrawHandlers.add(callback); 443 } 444 } 445 } 446 447 public static void addConfigCallback(ComponentCallbacks callback) { 448 synchronized (sConfigCallbacks) { 449 sConfigCallbacks.add(callback); 450 } 451 } 452 453 // FIXME for perf testing only 454 private boolean mProfile = false; 455 456 /** 457 * Call this to profile the next traversal call. 458 * FIXME for perf testing only. Remove eventually 459 */ 460 public void profile() { 461 mProfile = true; 462 } 463 464 /** 465 * Indicates whether we are in touch mode. Calling this method triggers an IPC 466 * call and should be avoided whenever possible. 467 * 468 * @return True, if the device is in touch mode, false otherwise. 469 * 470 * @hide 471 */ 472 static boolean isInTouchMode() { 473 if (mInitialized) { 474 try { 475 return sWindowSession.getInTouchMode(); 476 } catch (RemoteException e) { 477 } 478 } 479 return false; 480 } 481 482 /** 483 * We have one child 484 */ 485 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 486 synchronized (this) { 487 if (mView == null) { 488 mView = view; 489 mFallbackEventHandler.setView(view); 490 mWindowAttributes.copyFrom(attrs); 491 attrs = mWindowAttributes; 492 493 if (view instanceof RootViewSurfaceTaker) { 494 mSurfaceHolderCallback = 495 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 496 if (mSurfaceHolderCallback != null) { 497 mSurfaceHolder = new TakenSurfaceHolder(); 498 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 499 } 500 } 501 502 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 503 mTranslator = compatibilityInfo.getTranslator(); 504 505 // If the application owns the surface, don't enable hardware acceleration 506 if (mSurfaceHolder == null) { 507 enableHardwareAcceleration(mView.getContext(), attrs); 508 } 509 510 boolean restore = false; 511 if (mTranslator != null) { 512 mSurface.setCompatibilityTranslator(mTranslator); 513 restore = true; 514 attrs.backup(); 515 mTranslator.translateWindowLayout(attrs); 516 } 517 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 518 519 if (!compatibilityInfo.supportsScreen()) { 520 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 521 mLastInCompatMode = true; 522 } 523 524 mSoftInputMode = attrs.softInputMode; 525 mWindowAttributesChanged = true; 526 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 527 mAttachInfo.mRootView = view; 528 mAttachInfo.mScalingRequired = mTranslator != null; 529 mAttachInfo.mApplicationScale = 530 mTranslator == null ? 1.0f : mTranslator.applicationScale; 531 if (panelParentView != null) { 532 mAttachInfo.mPanelParentWindowToken 533 = panelParentView.getApplicationWindowToken(); 534 } 535 mAdded = true; 536 int res; /* = WindowManagerImpl.ADD_OKAY; */ 537 538 // Schedule the first layout -before- adding to the window 539 // manager, to make sure we do the relayout before receiving 540 // any other events from the system. 541 requestLayout(); 542 if ((mWindowAttributes.inputFeatures 543 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 544 mInputChannel = new InputChannel(); 545 } 546 try { 547 mOrigWindowType = mWindowAttributes.type; 548 mAttachInfo.mRecomputeGlobalAttributes = true; 549 collectViewAttributes(); 550 res = sWindowSession.add(mWindow, mSeq, mWindowAttributes, 551 getHostVisibility(), mAttachInfo.mContentInsets, 552 mInputChannel); 553 } catch (RemoteException e) { 554 mAdded = false; 555 mView = null; 556 mAttachInfo.mRootView = null; 557 mInputChannel = null; 558 mFallbackEventHandler.setView(null); 559 unscheduleTraversals(); 560 throw new RuntimeException("Adding window failed", e); 561 } finally { 562 if (restore) { 563 attrs.restore(); 564 } 565 } 566 567 if (mTranslator != null) { 568 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 569 } 570 mPendingContentInsets.set(mAttachInfo.mContentInsets); 571 mPendingVisibleInsets.set(0, 0, 0, 0); 572 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 573 if (res < WindowManagerImpl.ADD_OKAY) { 574 mView = null; 575 mAttachInfo.mRootView = null; 576 mAdded = false; 577 mFallbackEventHandler.setView(null); 578 unscheduleTraversals(); 579 switch (res) { 580 case WindowManagerImpl.ADD_BAD_APP_TOKEN: 581 case WindowManagerImpl.ADD_BAD_SUBWINDOW_TOKEN: 582 throw new WindowManagerImpl.BadTokenException( 583 "Unable to add window -- token " + attrs.token 584 + " is not valid; is your activity running?"); 585 case WindowManagerImpl.ADD_NOT_APP_TOKEN: 586 throw new WindowManagerImpl.BadTokenException( 587 "Unable to add window -- token " + attrs.token 588 + " is not for an application"); 589 case WindowManagerImpl.ADD_APP_EXITING: 590 throw new WindowManagerImpl.BadTokenException( 591 "Unable to add window -- app for token " + attrs.token 592 + " is exiting"); 593 case WindowManagerImpl.ADD_DUPLICATE_ADD: 594 throw new WindowManagerImpl.BadTokenException( 595 "Unable to add window -- window " + mWindow 596 + " has already been added"); 597 case WindowManagerImpl.ADD_STARTING_NOT_NEEDED: 598 // Silently ignore -- we would have just removed it 599 // right away, anyway. 600 return; 601 case WindowManagerImpl.ADD_MULTIPLE_SINGLETON: 602 throw new WindowManagerImpl.BadTokenException( 603 "Unable to add window " + mWindow + 604 " -- another window of this type already exists"); 605 case WindowManagerImpl.ADD_PERMISSION_DENIED: 606 throw new WindowManagerImpl.BadTokenException( 607 "Unable to add window " + mWindow + 608 " -- permission denied for this window type"); 609 } 610 throw new RuntimeException( 611 "Unable to add window -- unknown error code " + res); 612 } 613 614 if (view instanceof RootViewSurfaceTaker) { 615 mInputQueueCallback = 616 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 617 } 618 if (mInputChannel != null) { 619 if (mInputQueueCallback != null) { 620 mInputQueue = new InputQueue(mInputChannel); 621 mInputQueueCallback.onInputQueueCreated(mInputQueue); 622 } else { 623 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 624 Looper.myLooper()); 625 } 626 } 627 628 view.assignParent(this); 629 mAddedTouchMode = (res&WindowManagerImpl.ADD_FLAG_IN_TOUCH_MODE) != 0; 630 mAppVisible = (res&WindowManagerImpl.ADD_FLAG_APP_VISIBLE) != 0; 631 632 if (mAccessibilityManager.isEnabled()) { 633 mAccessibilityInteractionConnectionManager.ensureConnection(); 634 } 635 636 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 637 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 638 } 639 } 640 } 641 } 642 643 void destroyHardwareResources() { 644 if (mAttachInfo.mHardwareRenderer != null) { 645 if (mAttachInfo.mHardwareRenderer.isEnabled()) { 646 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 647 } 648 mAttachInfo.mHardwareRenderer.destroy(false); 649 } 650 } 651 652 void terminateHardwareResources() { 653 if (mAttachInfo.mHardwareRenderer != null) { 654 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 655 mAttachInfo.mHardwareRenderer.destroy(false); 656 } 657 } 658 659 void destroyHardwareLayers() { 660 if (mThread != Thread.currentThread()) { 661 if (mAttachInfo.mHardwareRenderer != null && 662 mAttachInfo.mHardwareRenderer.isEnabled()) { 663 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 664 } 665 } else { 666 if (mAttachInfo.mHardwareRenderer != null && 667 mAttachInfo.mHardwareRenderer.isEnabled()) { 668 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 669 } 670 } 671 } 672 673 public void attachFunctor(int functor) { 674 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 675 mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 676 } 677 } 678 679 public void detachFunctor(int functor) { 680 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 681 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 682 } 683 } 684 685 private void enableHardwareAcceleration(Context context, WindowManager.LayoutParams attrs) { 686 mAttachInfo.mHardwareAccelerated = false; 687 mAttachInfo.mHardwareAccelerationRequested = false; 688 689 // Don't enable hardware acceleration when the application is in compatibility mode 690 if (mTranslator != null) return; 691 692 // Try to enable hardware acceleration if requested 693 final boolean hardwareAccelerated = 694 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 695 696 if (hardwareAccelerated) { 697 if (!HardwareRenderer.isAvailable()) { 698 return; 699 } 700 701 // Persistent processes (including the system) should not do 702 // accelerated rendering on low-end devices. In that case, 703 // sRendererDisabled will be set. In addition, the system process 704 // itself should never do accelerated rendering. In that case, both 705 // sRendererDisabled and sSystemRendererDisabled are set. When 706 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 707 // can be used by code on the system process to escape that and enable 708 // HW accelerated drawing. (This is basically for the lock screen.) 709 710 final boolean fakeHwAccelerated = (attrs.privateFlags & 711 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 712 final boolean forceHwAccelerated = (attrs.privateFlags & 713 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 714 715 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 716 && forceHwAccelerated)) { 717 // Don't enable hardware acceleration when we're not on the main thread 718 if (!HardwareRenderer.sSystemRendererDisabled && 719 Looper.getMainLooper() != Looper.myLooper()) { 720 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 721 + "acceleration outside of the main thread, aborting"); 722 return; 723 } 724 725 final boolean renderThread = isRenderThreadRequested(context); 726 if (renderThread) { 727 Log.i(HardwareRenderer.LOG_TAG, "Render threat initiated"); 728 } 729 730 if (mAttachInfo.mHardwareRenderer != null) { 731 mAttachInfo.mHardwareRenderer.destroy(true); 732 } 733 734 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 735 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 736 mAttachInfo.mHardwareAccelerated = mAttachInfo.mHardwareAccelerationRequested 737 = mAttachInfo.mHardwareRenderer != null; 738 739 } else if (fakeHwAccelerated) { 740 // The window had wanted to use hardware acceleration, but this 741 // is not allowed in its process. By setting this flag, it can 742 // still render as if it was accelerated. This is basically for 743 // the preview windows the window manager shows for launching 744 // applications, so they will look more like the app being launched. 745 mAttachInfo.mHardwareAccelerationRequested = true; 746 } 747 } 748 } 749 750 public View getView() { 751 return mView; 752 } 753 754 final WindowLeaked getLocation() { 755 return mLocation; 756 } 757 758 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 759 synchronized (this) { 760 int oldSoftInputMode = mWindowAttributes.softInputMode; 761 // preserve compatible window flag if exists. 762 int compatibleWindowFlag = 763 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 764 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 765 mWindowAttributes.flags |= compatibleWindowFlag; 766 767 if (newView) { 768 mSoftInputMode = attrs.softInputMode; 769 requestLayout(); 770 } 771 // Don't lose the mode we last auto-computed. 772 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 773 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 774 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 775 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 776 | (oldSoftInputMode 777 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 778 } 779 mWindowAttributesChanged = true; 780 scheduleTraversals(); 781 } 782 } 783 784 void handleAppVisibility(boolean visible) { 785 if (mAppVisible != visible) { 786 mAppVisible = visible; 787 scheduleTraversals(); 788 } 789 } 790 791 void handleGetNewSurface() { 792 mNewSurfaceNeeded = true; 793 mFullRedrawNeeded = true; 794 scheduleTraversals(); 795 } 796 797 void handleScreenStateChange(boolean on) { 798 if (on != mAttachInfo.mScreenOn) { 799 mAttachInfo.mScreenOn = on; 800 if (mView != null) { 801 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 802 } 803 if (on) { 804 mFullRedrawNeeded = true; 805 scheduleTraversals(); 806 } 807 } 808 } 809 810 /** 811 * {@inheritDoc} 812 */ 813 public void requestFitSystemWindows() { 814 checkThread(); 815 mFitSystemWindowsRequested = true; 816 scheduleTraversals(); 817 } 818 819 /** 820 * {@inheritDoc} 821 */ 822 public void requestLayout() { 823 checkThread(); 824 mLayoutRequested = true; 825 scheduleTraversals(); 826 } 827 828 /** 829 * {@inheritDoc} 830 */ 831 public boolean isLayoutRequested() { 832 return mLayoutRequested; 833 } 834 835 void invalidate() { 836 mDirty.set(0, 0, mWidth, mHeight); 837 scheduleTraversals(); 838 } 839 840 public void invalidateChild(View child, Rect dirty) { 841 invalidateChildInParent(null, dirty); 842 } 843 844 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 845 checkThread(); 846 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 847 848 if (dirty == null) { 849 invalidate(); 850 return null; 851 } 852 853 if (mCurScrollY != 0 || mTranslator != null) { 854 mTempRect.set(dirty); 855 dirty = mTempRect; 856 if (mCurScrollY != 0) { 857 dirty.offset(0, -mCurScrollY); 858 } 859 if (mTranslator != null) { 860 mTranslator.translateRectInAppWindowToScreen(dirty); 861 } 862 if (mAttachInfo.mScalingRequired) { 863 dirty.inset(-1, -1); 864 } 865 } 866 867 final Rect localDirty = mDirty; 868 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 869 mAttachInfo.mSetIgnoreDirtyState = true; 870 mAttachInfo.mIgnoreDirtyState = true; 871 } 872 873 // Add the new dirty rect to the current one 874 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 875 // Intersect with the bounds of the window to skip 876 // updates that lie outside of the visible region 877 final float appScale = mAttachInfo.mApplicationScale; 878 localDirty.intersect(0, 0, 879 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 880 881 if (!mWillDrawSoon) { 882 scheduleTraversals(); 883 } 884 885 return null; 886 } 887 888 void setStopped(boolean stopped) { 889 if (mStopped != stopped) { 890 mStopped = stopped; 891 if (!stopped) { 892 scheduleTraversals(); 893 } 894 } 895 } 896 897 public ViewParent getParent() { 898 return null; 899 } 900 901 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 902 if (child != mView) { 903 throw new RuntimeException("child is not mine, honest!"); 904 } 905 // Note: don't apply scroll offset, because we want to know its 906 // visibility in the virtual canvas being given to the view hierarchy. 907 return r.intersect(0, 0, mWidth, mHeight); 908 } 909 910 public void bringChildToFront(View child) { 911 } 912 913 int getHostVisibility() { 914 return mAppVisible ? mView.getVisibility() : View.GONE; 915 } 916 917 void disposeResizeBuffer() { 918 if (mResizeBuffer != null) { 919 mResizeBuffer.destroy(); 920 mResizeBuffer = null; 921 } 922 } 923 924 /** 925 * Add LayoutTransition to the list of transitions to be started in the next traversal. 926 * This list will be cleared after the transitions on the list are start()'ed. These 927 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 928 * happens during the layout phase of traversal, which we want to complete before any of the 929 * animations are started (because those animations may side-effect properties that layout 930 * depends upon, like the bounding rectangles of the affected views). So we add the transition 931 * to the list and it is started just prior to starting the drawing phase of traversal. 932 * 933 * @param transition The LayoutTransition to be started on the next traversal. 934 * 935 * @hide 936 */ 937 public void requestTransitionStart(LayoutTransition transition) { 938 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 939 if (mPendingTransitions == null) { 940 mPendingTransitions = new ArrayList<LayoutTransition>(); 941 } 942 mPendingTransitions.add(transition); 943 } 944 } 945 946 void scheduleTraversals() { 947 if (!mTraversalScheduled) { 948 mTraversalScheduled = true; 949 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 950 mChoreographer.postCallback( 951 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 952 scheduleConsumeBatchedInput(); 953 } 954 } 955 956 void unscheduleTraversals() { 957 if (mTraversalScheduled) { 958 mTraversalScheduled = false; 959 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 960 mChoreographer.removeCallbacks( 961 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 962 } 963 } 964 965 void doTraversal() { 966 if (mTraversalScheduled) { 967 mTraversalScheduled = false; 968 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 969 970 if (mProfile) { 971 Debug.startMethodTracing("ViewAncestor"); 972 } 973 974 final long traversalStartTime; 975 if (ViewDebug.DEBUG_LATENCY) { 976 traversalStartTime = System.nanoTime(); 977 if (mLastTraversalFinishedTimeNanos != 0) { 978 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting performTraversals(); it has been " 979 + ((traversalStartTime - mLastTraversalFinishedTimeNanos) * 0.000001f) 980 + "ms since the last traversals finished."); 981 } else { 982 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting performTraversals()."); 983 } 984 } 985 986 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 987 try { 988 performTraversals(); 989 } finally { 990 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 991 } 992 993 if (ViewDebug.DEBUG_LATENCY) { 994 long now = System.nanoTime(); 995 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "performTraversals() took " 996 + ((now - traversalStartTime) * 0.000001f) 997 + "ms."); 998 mLastTraversalFinishedTimeNanos = now; 999 } 1000 1001 if (mProfile) { 1002 Debug.stopMethodTracing(); 1003 mProfile = false; 1004 } 1005 } 1006 } 1007 1008 private boolean collectViewAttributes() { 1009 final View.AttachInfo attachInfo = mAttachInfo; 1010 if (attachInfo.mRecomputeGlobalAttributes) { 1011 //Log.i(TAG, "Computing view hierarchy attributes!"); 1012 attachInfo.mRecomputeGlobalAttributes = false; 1013 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1014 int oldVis = attachInfo.mSystemUiVisibility; 1015 boolean oldHasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1016 attachInfo.mKeepScreenOn = false; 1017 attachInfo.mSystemUiVisibility = 0; 1018 attachInfo.mHasSystemUiListeners = false; 1019 mView.dispatchCollectViewAttributes(attachInfo, 0); 1020 if (attachInfo.mKeepScreenOn != oldScreenOn 1021 || attachInfo.mSystemUiVisibility != oldVis 1022 || attachInfo.mHasSystemUiListeners != oldHasSystemUiListeners) { 1023 WindowManager.LayoutParams params = mWindowAttributes; 1024 if (attachInfo.mKeepScreenOn) { 1025 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1026 } 1027 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1028 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1029 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1030 return true; 1031 } 1032 } 1033 return false; 1034 } 1035 1036 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1037 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1038 int childWidthMeasureSpec; 1039 int childHeightMeasureSpec; 1040 boolean windowSizeMayChange = false; 1041 1042 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1043 "Measuring " + host + " in display " + desiredWindowWidth 1044 + "x" + desiredWindowHeight + "..."); 1045 1046 boolean goodMeasure = false; 1047 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1048 // On large screens, we don't want to allow dialogs to just 1049 // stretch to fill the entire width of the screen to display 1050 // one line of text. First try doing the layout at a smaller 1051 // size to see if it will fit. 1052 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1053 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1054 int baseSize = 0; 1055 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1056 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1057 } 1058 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1059 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1060 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1061 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1062 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1063 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1064 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1065 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1066 goodMeasure = true; 1067 } else { 1068 // Didn't fit in that size... try expanding a bit. 1069 baseSize = (baseSize+desiredWindowWidth)/2; 1070 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1071 + baseSize); 1072 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1073 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1074 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1075 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1076 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1077 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1078 goodMeasure = true; 1079 } 1080 } 1081 } 1082 } 1083 1084 if (!goodMeasure) { 1085 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1086 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1087 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1088 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1089 windowSizeMayChange = true; 1090 } 1091 } 1092 1093 if (DBG) { 1094 System.out.println("======================================"); 1095 System.out.println("performTraversals -- after measure"); 1096 host.debug(); 1097 } 1098 1099 return windowSizeMayChange; 1100 } 1101 1102 private void performTraversals() { 1103 // cache mView since it is used so much below... 1104 final View host = mView; 1105 1106 if (DBG) { 1107 System.out.println("======================================"); 1108 System.out.println("performTraversals"); 1109 host.debug(); 1110 } 1111 1112 if (host == null || !mAdded) 1113 return; 1114 1115 mWillDrawSoon = true; 1116 boolean windowSizeMayChange = false; 1117 boolean newSurface = false; 1118 boolean surfaceChanged = false; 1119 WindowManager.LayoutParams lp = mWindowAttributes; 1120 1121 int desiredWindowWidth; 1122 int desiredWindowHeight; 1123 1124 final View.AttachInfo attachInfo = mAttachInfo; 1125 1126 final int viewVisibility = getHostVisibility(); 1127 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1128 || mNewSurfaceNeeded; 1129 1130 WindowManager.LayoutParams params = null; 1131 if (mWindowAttributesChanged) { 1132 mWindowAttributesChanged = false; 1133 surfaceChanged = true; 1134 params = lp; 1135 } 1136 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 1137 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1138 params = lp; 1139 mFullRedrawNeeded = true; 1140 mLayoutRequested = true; 1141 if (mLastInCompatMode) { 1142 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1143 mLastInCompatMode = false; 1144 } else { 1145 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1146 mLastInCompatMode = true; 1147 } 1148 } 1149 1150 mWindowAttributesChangesFlag = 0; 1151 1152 Rect frame = mWinFrame; 1153 if (mFirst) { 1154 mFullRedrawNeeded = true; 1155 mLayoutRequested = true; 1156 1157 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1158 // NOTE -- system code, won't try to do compat mode. 1159 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1160 Point size = new Point(); 1161 disp.getRealSize(size); 1162 desiredWindowWidth = size.x; 1163 desiredWindowHeight = size.y; 1164 } else { 1165 DisplayMetrics packageMetrics = 1166 mView.getContext().getResources().getDisplayMetrics(); 1167 desiredWindowWidth = packageMetrics.widthPixels; 1168 desiredWindowHeight = packageMetrics.heightPixels; 1169 } 1170 1171 // For the very first time, tell the view hierarchy that it 1172 // is attached to the window. Note that at this point the surface 1173 // object is not initialized to its backing store, but soon it 1174 // will be (assuming the window is visible). 1175 attachInfo.mSurface = mSurface; 1176 // We used to use the following condition to choose 32 bits drawing caches: 1177 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1178 // However, windows are now always 32 bits by default, so choose 32 bits 1179 attachInfo.mUse32BitDrawingCache = true; 1180 attachInfo.mHasWindowFocus = false; 1181 attachInfo.mWindowVisibility = viewVisibility; 1182 attachInfo.mRecomputeGlobalAttributes = false; 1183 viewVisibilityChanged = false; 1184 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1185 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1186 host.dispatchAttachedToWindow(attachInfo, 0); 1187 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1188 host.fitSystemWindows(mFitSystemWindowsInsets); 1189 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1190 1191 } else { 1192 desiredWindowWidth = frame.width(); 1193 desiredWindowHeight = frame.height(); 1194 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1195 if (DEBUG_ORIENTATION) Log.v(TAG, 1196 "View " + host + " resized to: " + frame); 1197 mFullRedrawNeeded = true; 1198 mLayoutRequested = true; 1199 windowSizeMayChange = true; 1200 } 1201 } 1202 1203 if (viewVisibilityChanged) { 1204 attachInfo.mWindowVisibility = viewVisibility; 1205 host.dispatchWindowVisibilityChanged(viewVisibility); 1206 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1207 destroyHardwareResources(); 1208 } 1209 if (viewVisibility == View.GONE) { 1210 // After making a window gone, we will count it as being 1211 // shown for the first time the next time it gets focus. 1212 mHasHadWindowFocus = false; 1213 } 1214 } 1215 1216 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1217 getRunQueue().executeActions(attachInfo.mHandler); 1218 1219 boolean insetsChanged = false; 1220 1221 boolean layoutRequested = mLayoutRequested && !mStopped; 1222 if (layoutRequested) { 1223 1224 final Resources res = mView.getContext().getResources(); 1225 1226 if (mFirst) { 1227 // make sure touch mode code executes by setting cached value 1228 // to opposite of the added touch mode. 1229 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1230 ensureTouchModeLocally(mAddedTouchMode); 1231 } else { 1232 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1233 insetsChanged = true; 1234 } 1235 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1236 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1237 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1238 + mAttachInfo.mVisibleInsets); 1239 } 1240 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1241 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1242 windowSizeMayChange = true; 1243 1244 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1245 // NOTE -- system code, won't try to do compat mode. 1246 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1247 Point size = new Point(); 1248 disp.getRealSize(size); 1249 desiredWindowWidth = size.x; 1250 desiredWindowHeight = size.y; 1251 } else { 1252 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1253 desiredWindowWidth = packageMetrics.widthPixels; 1254 desiredWindowHeight = packageMetrics.heightPixels; 1255 } 1256 } 1257 } 1258 1259 // Ask host how big it wants to be 1260 windowSizeMayChange |= measureHierarchy(host, lp, res, 1261 desiredWindowWidth, desiredWindowHeight); 1262 } 1263 1264 if (collectViewAttributes()) { 1265 params = lp; 1266 } 1267 if (attachInfo.mForceReportNewAttributes) { 1268 attachInfo.mForceReportNewAttributes = false; 1269 params = lp; 1270 } 1271 1272 if (mFirst || attachInfo.mViewVisibilityChanged) { 1273 attachInfo.mViewVisibilityChanged = false; 1274 int resizeMode = mSoftInputMode & 1275 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1276 // If we are in auto resize mode, then we need to determine 1277 // what mode to use now. 1278 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1279 final int N = attachInfo.mScrollContainers.size(); 1280 for (int i=0; i<N; i++) { 1281 if (attachInfo.mScrollContainers.get(i).isShown()) { 1282 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1283 } 1284 } 1285 if (resizeMode == 0) { 1286 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1287 } 1288 if ((lp.softInputMode & 1289 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1290 lp.softInputMode = (lp.softInputMode & 1291 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1292 resizeMode; 1293 params = lp; 1294 } 1295 } 1296 } 1297 1298 if (params != null && (host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1299 if (!PixelFormat.formatHasAlpha(params.format)) { 1300 params.format = PixelFormat.TRANSLUCENT; 1301 } 1302 } 1303 1304 if (mFitSystemWindowsRequested) { 1305 mFitSystemWindowsRequested = false; 1306 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1307 host.fitSystemWindows(mFitSystemWindowsInsets); 1308 if (mLayoutRequested) { 1309 // Short-circuit catching a new layout request here, so 1310 // we don't need to go through two layout passes when things 1311 // change due to fitting system windows, which can happen a lot. 1312 windowSizeMayChange |= measureHierarchy(host, lp, 1313 mView.getContext().getResources(), 1314 desiredWindowWidth, desiredWindowHeight); 1315 } 1316 } 1317 1318 if (layoutRequested) { 1319 // Clear this now, so that if anything requests a layout in the 1320 // rest of this function we will catch it and re-run a full 1321 // layout pass. 1322 mLayoutRequested = false; 1323 } 1324 1325 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1326 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1327 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1328 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1329 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1330 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1331 1332 final boolean computesInternalInsets = 1333 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1334 1335 boolean insetsPending = false; 1336 int relayoutResult = 0; 1337 1338 if (mFirst || windowShouldResize || insetsChanged || 1339 viewVisibilityChanged || params != null) { 1340 1341 if (viewVisibility == View.VISIBLE) { 1342 // If this window is giving internal insets to the window 1343 // manager, and it is being added or changing its visibility, 1344 // then we want to first give the window manager "fake" 1345 // insets to cause it to effectively ignore the content of 1346 // the window during layout. This avoids it briefly causing 1347 // other windows to resize/move based on the raw frame of the 1348 // window, waiting until we can finish laying out this window 1349 // and get back to the window manager with the ultimately 1350 // computed insets. 1351 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1352 } 1353 1354 if (mSurfaceHolder != null) { 1355 mSurfaceHolder.mSurfaceLock.lock(); 1356 mDrawingAllowed = true; 1357 } 1358 1359 boolean hwInitialized = false; 1360 boolean contentInsetsChanged = false; 1361 boolean visibleInsetsChanged; 1362 boolean hadSurface = mSurface.isValid(); 1363 1364 try { 1365 if (DEBUG_LAYOUT) { 1366 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1367 host.getMeasuredHeight() + ", params=" + params); 1368 } 1369 1370 final int surfaceGenerationId = mSurface.getGenerationId(); 1371 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1372 1373 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1374 + " content=" + mPendingContentInsets.toShortString() 1375 + " visible=" + mPendingVisibleInsets.toShortString() 1376 + " surface=" + mSurface); 1377 1378 if (mPendingConfiguration.seq != 0) { 1379 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1380 + mPendingConfiguration); 1381 updateConfiguration(mPendingConfiguration, !mFirst); 1382 mPendingConfiguration.seq = 0; 1383 } 1384 1385 contentInsetsChanged = !mPendingContentInsets.equals( 1386 mAttachInfo.mContentInsets); 1387 visibleInsetsChanged = !mPendingVisibleInsets.equals( 1388 mAttachInfo.mVisibleInsets); 1389 if (contentInsetsChanged) { 1390 if (mWidth > 0 && mHeight > 0 && lp != null && 1391 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1392 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1393 mSurface != null && mSurface.isValid() && 1394 !mAttachInfo.mTurnOffWindowResizeAnim && 1395 mAttachInfo.mHardwareRenderer != null && 1396 mAttachInfo.mHardwareRenderer.isEnabled() && 1397 mAttachInfo.mHardwareRenderer.validate() && 1398 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1399 1400 disposeResizeBuffer(); 1401 1402 boolean completed = false; 1403 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1404 HardwareCanvas layerCanvas = null; 1405 try { 1406 if (mResizeBuffer == null) { 1407 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1408 mWidth, mHeight, false); 1409 } else if (mResizeBuffer.getWidth() != mWidth || 1410 mResizeBuffer.getHeight() != mHeight) { 1411 mResizeBuffer.resize(mWidth, mHeight); 1412 } 1413 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1414 layerCanvas.setViewport(mWidth, mHeight); 1415 layerCanvas.onPreDraw(null); 1416 final int restoreCount = layerCanvas.save(); 1417 1418 layerCanvas.drawColor(0xff000000, PorterDuff.Mode.SRC); 1419 1420 int yoff; 1421 final boolean scrolling = mScroller != null 1422 && mScroller.computeScrollOffset(); 1423 if (scrolling) { 1424 yoff = mScroller.getCurrY(); 1425 mScroller.abortAnimation(); 1426 } else { 1427 yoff = mScrollY; 1428 } 1429 1430 layerCanvas.translate(0, -yoff); 1431 if (mTranslator != null) { 1432 mTranslator.translateCanvas(layerCanvas); 1433 } 1434 1435 mView.draw(layerCanvas); 1436 1437 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1438 1439 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1440 mResizeBufferDuration = mView.getResources().getInteger( 1441 com.android.internal.R.integer.config_mediumAnimTime); 1442 completed = true; 1443 1444 layerCanvas.restoreToCount(restoreCount); 1445 } catch (OutOfMemoryError e) { 1446 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1447 } finally { 1448 if (layerCanvas != null) { 1449 layerCanvas.onPostDraw(); 1450 } 1451 if (mResizeBuffer != null) { 1452 mResizeBuffer.end(hwRendererCanvas); 1453 if (!completed) { 1454 mResizeBuffer.destroy(); 1455 mResizeBuffer = null; 1456 } 1457 } 1458 } 1459 } 1460 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1461 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1462 + mAttachInfo.mContentInsets); 1463 } 1464 if (contentInsetsChanged || mLastSystemUiVisibility != 1465 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested) { 1466 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1467 mFitSystemWindowsRequested = false; 1468 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1469 host.fitSystemWindows(mFitSystemWindowsInsets); 1470 } 1471 if (visibleInsetsChanged) { 1472 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1473 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1474 + mAttachInfo.mVisibleInsets); 1475 } 1476 1477 if (!hadSurface) { 1478 if (mSurface.isValid()) { 1479 // If we are creating a new surface, then we need to 1480 // completely redraw it. Also, when we get to the 1481 // point of drawing it we will hold off and schedule 1482 // a new traversal instead. This is so we can tell the 1483 // window manager about all of the windows being displayed 1484 // before actually drawing them, so it can display then 1485 // all at once. 1486 newSurface = true; 1487 mFullRedrawNeeded = true; 1488 mPreviousTransparentRegion.setEmpty(); 1489 1490 if (mAttachInfo.mHardwareRenderer != null) { 1491 try { 1492 hwInitialized = mAttachInfo.mHardwareRenderer.initialize(mHolder); 1493 } catch (Surface.OutOfResourcesException e) { 1494 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1495 try { 1496 if (!sWindowSession.outOfMemory(mWindow)) { 1497 Slog.w(TAG, "No processes killed for memory; killing self"); 1498 Process.killProcess(Process.myPid()); 1499 } 1500 } catch (RemoteException ex) { 1501 } 1502 mLayoutRequested = true; // ask wm for a new surface next time. 1503 return; 1504 } 1505 } 1506 } 1507 } else if (!mSurface.isValid()) { 1508 // If the surface has been removed, then reset the scroll 1509 // positions. 1510 mLastScrolledFocus = null; 1511 mScrollY = mCurScrollY = 0; 1512 if (mScroller != null) { 1513 mScroller.abortAnimation(); 1514 } 1515 disposeResizeBuffer(); 1516 // Our surface is gone 1517 if (mAttachInfo.mHardwareRenderer != null && 1518 mAttachInfo.mHardwareRenderer.isEnabled()) { 1519 mAttachInfo.mHardwareRenderer.destroy(true); 1520 } 1521 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1522 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1523 mFullRedrawNeeded = true; 1524 try { 1525 mAttachInfo.mHardwareRenderer.updateSurface(mHolder); 1526 } catch (Surface.OutOfResourcesException e) { 1527 Log.e(TAG, "OutOfResourcesException updating HW surface", e); 1528 try { 1529 if (!sWindowSession.outOfMemory(mWindow)) { 1530 Slog.w(TAG, "No processes killed for memory; killing self"); 1531 Process.killProcess(Process.myPid()); 1532 } 1533 } catch (RemoteException ex) { 1534 } 1535 mLayoutRequested = true; // ask wm for a new surface next time. 1536 return; 1537 } 1538 } 1539 } catch (RemoteException e) { 1540 } 1541 1542 if (DEBUG_ORIENTATION) Log.v( 1543 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1544 1545 attachInfo.mWindowLeft = frame.left; 1546 attachInfo.mWindowTop = frame.top; 1547 1548 // !!FIXME!! This next section handles the case where we did not get the 1549 // window size we asked for. We should avoid this by getting a maximum size from 1550 // the window session beforehand. 1551 mWidth = frame.width(); 1552 mHeight = frame.height(); 1553 1554 if (mSurfaceHolder != null) { 1555 // The app owns the surface; tell it about what is going on. 1556 if (mSurface.isValid()) { 1557 // XXX .copyFrom() doesn't work! 1558 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1559 mSurfaceHolder.mSurface = mSurface; 1560 } 1561 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1562 mSurfaceHolder.mSurfaceLock.unlock(); 1563 if (mSurface.isValid()) { 1564 if (!hadSurface) { 1565 mSurfaceHolder.ungetCallbacks(); 1566 1567 mIsCreating = true; 1568 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1569 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1570 if (callbacks != null) { 1571 for (SurfaceHolder.Callback c : callbacks) { 1572 c.surfaceCreated(mSurfaceHolder); 1573 } 1574 } 1575 surfaceChanged = true; 1576 } 1577 if (surfaceChanged) { 1578 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1579 lp.format, mWidth, mHeight); 1580 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1581 if (callbacks != null) { 1582 for (SurfaceHolder.Callback c : callbacks) { 1583 c.surfaceChanged(mSurfaceHolder, lp.format, 1584 mWidth, mHeight); 1585 } 1586 } 1587 } 1588 mIsCreating = false; 1589 } else if (hadSurface) { 1590 mSurfaceHolder.ungetCallbacks(); 1591 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1592 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1593 if (callbacks != null) { 1594 for (SurfaceHolder.Callback c : callbacks) { 1595 c.surfaceDestroyed(mSurfaceHolder); 1596 } 1597 } 1598 mSurfaceHolder.mSurfaceLock.lock(); 1599 try { 1600 mSurfaceHolder.mSurface = new Surface(); 1601 } finally { 1602 mSurfaceHolder.mSurfaceLock.unlock(); 1603 } 1604 } 1605 } 1606 1607 if (mAttachInfo.mHardwareRenderer != null && 1608 mAttachInfo.mHardwareRenderer.isEnabled()) { 1609 if (hwInitialized || windowShouldResize || 1610 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1611 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1612 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1613 if (!hwInitialized) { 1614 mAttachInfo.mHardwareRenderer.invalidate(mHolder); 1615 } 1616 } 1617 } 1618 1619 if (!mStopped) { 1620 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1621 (relayoutResult&WindowManagerImpl.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1622 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1623 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1624 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1625 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1626 1627 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1628 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1629 + " mHeight=" + mHeight 1630 + " measuredHeight=" + host.getMeasuredHeight() 1631 + " coveredInsetsChanged=" + contentInsetsChanged); 1632 1633 // Ask host how big it wants to be 1634 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1635 1636 // Implementation of weights from WindowManager.LayoutParams 1637 // We just grow the dimensions as needed and re-measure if 1638 // needs be 1639 int width = host.getMeasuredWidth(); 1640 int height = host.getMeasuredHeight(); 1641 boolean measureAgain = false; 1642 1643 if (lp.horizontalWeight > 0.0f) { 1644 width += (int) ((mWidth - width) * lp.horizontalWeight); 1645 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1646 MeasureSpec.EXACTLY); 1647 measureAgain = true; 1648 } 1649 if (lp.verticalWeight > 0.0f) { 1650 height += (int) ((mHeight - height) * lp.verticalWeight); 1651 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1652 MeasureSpec.EXACTLY); 1653 measureAgain = true; 1654 } 1655 1656 if (measureAgain) { 1657 if (DEBUG_LAYOUT) Log.v(TAG, 1658 "And hey let's measure once more: width=" + width 1659 + " height=" + height); 1660 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1661 } 1662 1663 layoutRequested = true; 1664 } 1665 } 1666 } 1667 1668 final boolean didLayout = layoutRequested && !mStopped; 1669 boolean triggerGlobalLayoutListener = didLayout 1670 || attachInfo.mRecomputeGlobalAttributes; 1671 if (didLayout) { 1672 mLayoutRequested = false; 1673 mScrollMayChange = true; 1674 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v( 1675 TAG, "Laying out " + host + " to (" + 1676 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1677 long startTime = 0L; 1678 if (ViewDebug.DEBUG_PROFILE_LAYOUT) { 1679 startTime = SystemClock.elapsedRealtime(); 1680 } 1681 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1682 1683 if (false && ViewDebug.consistencyCheckEnabled) { 1684 if (!host.dispatchConsistencyCheck(ViewDebug.CONSISTENCY_LAYOUT)) { 1685 throw new IllegalStateException("The view hierarchy is an inconsistent state," 1686 + "please refer to the logs with the tag " 1687 + ViewDebug.CONSISTENCY_LOG_TAG + " for more infomation."); 1688 } 1689 } 1690 1691 if (ViewDebug.DEBUG_PROFILE_LAYOUT) { 1692 EventLog.writeEvent(60001, SystemClock.elapsedRealtime() - startTime); 1693 } 1694 1695 // By this point all views have been sized and positionned 1696 // We can compute the transparent area 1697 1698 if ((host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1699 // start out transparent 1700 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1701 host.getLocationInWindow(mTmpLocation); 1702 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1703 mTmpLocation[0] + host.mRight - host.mLeft, 1704 mTmpLocation[1] + host.mBottom - host.mTop); 1705 1706 host.gatherTransparentRegion(mTransparentRegion); 1707 if (mTranslator != null) { 1708 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1709 } 1710 1711 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1712 mPreviousTransparentRegion.set(mTransparentRegion); 1713 // reconfigure window manager 1714 try { 1715 sWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1716 } catch (RemoteException e) { 1717 } 1718 } 1719 } 1720 1721 if (DBG) { 1722 System.out.println("======================================"); 1723 System.out.println("performTraversals -- after setFrame"); 1724 host.debug(); 1725 } 1726 } 1727 1728 if (triggerGlobalLayoutListener) { 1729 attachInfo.mRecomputeGlobalAttributes = false; 1730 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1731 1732 if (AccessibilityManager.getInstance(host.mContext).isEnabled()) { 1733 postSendWindowContentChangedCallback(mView); 1734 } 1735 } 1736 1737 if (computesInternalInsets) { 1738 // Clear the original insets. 1739 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1740 insets.reset(); 1741 1742 // Compute new insets in place. 1743 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1744 1745 // Tell the window manager. 1746 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1747 mLastGivenInsets.set(insets); 1748 1749 // Translate insets to screen coordinates if needed. 1750 final Rect contentInsets; 1751 final Rect visibleInsets; 1752 final Region touchableRegion; 1753 if (mTranslator != null) { 1754 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1755 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1756 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1757 } else { 1758 contentInsets = insets.contentInsets; 1759 visibleInsets = insets.visibleInsets; 1760 touchableRegion = insets.touchableRegion; 1761 } 1762 1763 try { 1764 sWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1765 contentInsets, visibleInsets, touchableRegion); 1766 } catch (RemoteException e) { 1767 } 1768 } 1769 } 1770 1771 boolean skipDraw = false; 1772 1773 if (mFirst) { 1774 // handle first focus request 1775 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1776 + mView.hasFocus()); 1777 if (mView != null) { 1778 if (!mView.hasFocus()) { 1779 mView.requestFocus(View.FOCUS_FORWARD); 1780 mFocusedView = mRealFocusedView = mView.findFocus(); 1781 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1782 + mFocusedView); 1783 } else { 1784 mRealFocusedView = mView.findFocus(); 1785 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1786 + mRealFocusedView); 1787 } 1788 } 1789 if ((relayoutResult&WindowManagerImpl.RELAYOUT_RES_ANIMATING) != 0) { 1790 // The first time we relayout the window, if the system is 1791 // doing window animations, we want to hold of on any future 1792 // draws until the animation is done. 1793 mWindowsAnimating = true; 1794 } 1795 } else if (mWindowsAnimating) { 1796 skipDraw = true; 1797 } 1798 1799 mFirst = false; 1800 mWillDrawSoon = false; 1801 mNewSurfaceNeeded = false; 1802 mViewVisibility = viewVisibility; 1803 1804 if (mAttachInfo.mHasWindowFocus) { 1805 final boolean imTarget = WindowManager.LayoutParams 1806 .mayUseInputMethod(mWindowAttributes.flags); 1807 if (imTarget != mLastWasImTarget) { 1808 mLastWasImTarget = imTarget; 1809 InputMethodManager imm = InputMethodManager.peekInstance(); 1810 if (imm != null && imTarget) { 1811 imm.startGettingWindowFocus(mView); 1812 imm.onWindowFocus(mView, mView.findFocus(), 1813 mWindowAttributes.softInputMode, 1814 !mHasHadWindowFocus, mWindowAttributes.flags); 1815 } 1816 } 1817 } 1818 1819 // Remember if we must report the next draw. 1820 if ((relayoutResult & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 1821 mReportNextDraw = true; 1822 } 1823 1824 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1825 viewVisibility != View.VISIBLE; 1826 1827 if (!cancelDraw && !newSurface) { 1828 if (!skipDraw || mReportNextDraw) { 1829 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1830 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1831 mPendingTransitions.get(i).startChangingAnimations(); 1832 } 1833 mPendingTransitions.clear(); 1834 } 1835 1836 performDraw(); 1837 } 1838 } else { 1839 // End any pending transitions on this non-visible window 1840 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1841 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1842 mPendingTransitions.get(i).endChangingAnimations(); 1843 } 1844 mPendingTransitions.clear(); 1845 } 1846 1847 if (viewVisibility == View.VISIBLE) { 1848 // Try again 1849 scheduleTraversals(); 1850 } 1851 } 1852 } 1853 1854 public void requestTransparentRegion(View child) { 1855 // the test below should not fail unless someone is messing with us 1856 checkThread(); 1857 if (mView == child) { 1858 mView.mPrivateFlags |= View.REQUEST_TRANSPARENT_REGIONS; 1859 // Need to make sure we re-evaluate the window attributes next 1860 // time around, to ensure the window has the correct format. 1861 mWindowAttributesChanged = true; 1862 mWindowAttributesChangesFlag = 0; 1863 requestLayout(); 1864 } 1865 } 1866 1867 /** 1868 * Figures out the measure spec for the root view in a window based on it's 1869 * layout params. 1870 * 1871 * @param windowSize 1872 * The available width or height of the window 1873 * 1874 * @param rootDimension 1875 * The layout params for one dimension (width or height) of the 1876 * window. 1877 * 1878 * @return The measure spec to use to measure the root view. 1879 */ 1880 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 1881 int measureSpec; 1882 switch (rootDimension) { 1883 1884 case ViewGroup.LayoutParams.MATCH_PARENT: 1885 // Window can't resize. Force root view to be windowSize. 1886 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 1887 break; 1888 case ViewGroup.LayoutParams.WRAP_CONTENT: 1889 // Window can resize. Set max size for root view. 1890 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 1891 break; 1892 default: 1893 // Window wants to be an exact size. Force root view to be that size. 1894 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 1895 break; 1896 } 1897 return measureSpec; 1898 } 1899 1900 int mHardwareYOffset; 1901 int mResizeAlpha; 1902 final Paint mResizePaint = new Paint(); 1903 1904 public void onHardwarePreDraw(HardwareCanvas canvas) { 1905 canvas.translate(0, -mHardwareYOffset); 1906 } 1907 1908 public void onHardwarePostDraw(HardwareCanvas canvas) { 1909 if (mResizeBuffer != null) { 1910 mResizePaint.setAlpha(mResizeAlpha); 1911 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 1912 } 1913 drawAccessibilityFocusedDrawableIfNeeded(canvas); 1914 } 1915 1916 /** 1917 * @hide 1918 */ 1919 void outputDisplayList(View view) { 1920 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 1921 DisplayList displayList = view.getDisplayList(); 1922 if (displayList != null) { 1923 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 1924 } 1925 } 1926 } 1927 1928 /** 1929 * @see #PROPERTY_PROFILE_RENDERING 1930 */ 1931 private void profileRendering(boolean enabled) { 1932 if (mProfileRendering) { 1933 mRenderProfilingEnabled = enabled; 1934 if (mRenderProfiler == null) { 1935 mRenderProfiler = new Thread(new Runnable() { 1936 @Override 1937 public void run() { 1938 Log.d(TAG, "Starting profiling thread"); 1939 while (mRenderProfilingEnabled) { 1940 mAttachInfo.mHandler.post(new Runnable() { 1941 @Override 1942 public void run() { 1943 mDirty.set(0, 0, mWidth, mHeight); 1944 scheduleTraversals(); 1945 } 1946 }); 1947 try { 1948 // TODO: This should use vsync when we get an API 1949 Thread.sleep(15); 1950 } catch (InterruptedException e) { 1951 Log.d(TAG, "Exiting profiling thread"); 1952 } 1953 } 1954 } 1955 }, "Rendering Profiler"); 1956 mRenderProfiler.start(); 1957 } else { 1958 mRenderProfiler.interrupt(); 1959 mRenderProfiler = null; 1960 } 1961 } 1962 } 1963 1964 /** 1965 * Called from draw() when DEBUG_FPS is enabled 1966 */ 1967 private void trackFPS() { 1968 // Tracks frames per second drawn. First value in a series of draws may be bogus 1969 // because it down not account for the intervening idle time 1970 long nowTime = System.currentTimeMillis(); 1971 if (mFpsStartTime < 0) { 1972 mFpsStartTime = mFpsPrevTime = nowTime; 1973 mFpsNumFrames = 0; 1974 } else { 1975 ++mFpsNumFrames; 1976 String thisHash = Integer.toHexString(System.identityHashCode(this)); 1977 long frameTime = nowTime - mFpsPrevTime; 1978 long totalTime = nowTime - mFpsStartTime; 1979 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 1980 mFpsPrevTime = nowTime; 1981 if (totalTime > 1000) { 1982 float fps = (float) mFpsNumFrames * 1000 / totalTime; 1983 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 1984 mFpsStartTime = nowTime; 1985 mFpsNumFrames = 0; 1986 } 1987 } 1988 } 1989 1990 private void performDraw() { 1991 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 1992 return; 1993 } 1994 1995 final long drawStartTime; 1996 if (ViewDebug.DEBUG_LATENCY) { 1997 drawStartTime = System.nanoTime(); 1998 if (mLastDrawFinishedTimeNanos != 0) { 1999 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting draw(); it has been " 2000 + ((drawStartTime - mLastDrawFinishedTimeNanos) * 0.000001f) 2001 + "ms since the last draw finished."); 2002 } else { 2003 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting draw()."); 2004 } 2005 } 2006 2007 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2008 mFullRedrawNeeded = false; 2009 2010 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2011 try { 2012 draw(fullRedrawNeeded); 2013 } finally { 2014 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2015 } 2016 2017 if (ViewDebug.DEBUG_LATENCY) { 2018 long now = System.nanoTime(); 2019 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "performDraw() took " 2020 + ((now - drawStartTime) * 0.000001f) 2021 + "ms."); 2022 mLastDrawFinishedTimeNanos = now; 2023 } 2024 2025 if (mReportNextDraw) { 2026 mReportNextDraw = false; 2027 2028 if (LOCAL_LOGV) { 2029 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2030 } 2031 if (mSurfaceHolder != null && mSurface.isValid()) { 2032 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2033 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2034 if (callbacks != null) { 2035 for (SurfaceHolder.Callback c : callbacks) { 2036 if (c instanceof SurfaceHolder.Callback2) { 2037 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2038 mSurfaceHolder); 2039 } 2040 } 2041 } 2042 } 2043 try { 2044 sWindowSession.finishDrawing(mWindow); 2045 } catch (RemoteException e) { 2046 } 2047 } 2048 } 2049 2050 private void draw(boolean fullRedrawNeeded) { 2051 Surface surface = mSurface; 2052 if (surface == null || !surface.isValid()) { 2053 return; 2054 } 2055 2056 if (DEBUG_FPS) { 2057 trackFPS(); 2058 } 2059 2060 if (!sFirstDrawComplete) { 2061 synchronized (sFirstDrawHandlers) { 2062 sFirstDrawComplete = true; 2063 final int count = sFirstDrawHandlers.size(); 2064 for (int i = 0; i< count; i++) { 2065 mHandler.post(sFirstDrawHandlers.get(i)); 2066 } 2067 } 2068 } 2069 2070 scrollToRectOrFocus(null, false); 2071 2072 final AttachInfo attachInfo = mAttachInfo; 2073 if (attachInfo.mViewScrollChanged) { 2074 attachInfo.mViewScrollChanged = false; 2075 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2076 } 2077 2078 int yoff; 2079 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2080 if (animating) { 2081 yoff = mScroller.getCurrY(); 2082 } else { 2083 yoff = mScrollY; 2084 } 2085 if (mCurScrollY != yoff) { 2086 mCurScrollY = yoff; 2087 fullRedrawNeeded = true; 2088 } 2089 2090 final float appScale = attachInfo.mApplicationScale; 2091 final boolean scalingRequired = attachInfo.mScalingRequired; 2092 2093 int resizeAlpha = 0; 2094 if (mResizeBuffer != null) { 2095 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2096 if (deltaTime < mResizeBufferDuration) { 2097 float amt = deltaTime/(float) mResizeBufferDuration; 2098 amt = mResizeInterpolator.getInterpolation(amt); 2099 animating = true; 2100 resizeAlpha = 255 - (int)(amt*255); 2101 } else { 2102 disposeResizeBuffer(); 2103 } 2104 } 2105 2106 final Rect dirty = mDirty; 2107 if (mSurfaceHolder != null) { 2108 // The app owns the surface, we won't draw. 2109 dirty.setEmpty(); 2110 if (animating) { 2111 if (mScroller != null) { 2112 mScroller.abortAnimation(); 2113 } 2114 disposeResizeBuffer(); 2115 } 2116 return; 2117 } 2118 2119 if (fullRedrawNeeded) { 2120 attachInfo.mIgnoreDirtyState = true; 2121 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2122 } 2123 2124 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2125 Log.v(TAG, "Draw " + mView + "/" 2126 + mWindowAttributes.getTitle() 2127 + ": dirty={" + dirty.left + "," + dirty.top 2128 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2129 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2130 appScale + ", width=" + mWidth + ", height=" + mHeight); 2131 } 2132 2133 attachInfo.mTreeObserver.dispatchOnDraw(); 2134 2135 if (!dirty.isEmpty() || mIsAnimating) { 2136 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2137 // Draw with hardware renderer. 2138 mIsAnimating = false; 2139 mHardwareYOffset = yoff; 2140 mResizeAlpha = resizeAlpha; 2141 2142 mCurrentDirty.set(dirty); 2143 mCurrentDirty.union(mPreviousDirty); 2144 mPreviousDirty.set(dirty); 2145 dirty.setEmpty(); 2146 2147 if (attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2148 animating ? null : mCurrentDirty)) { 2149 mPreviousDirty.set(0, 0, mWidth, mHeight); 2150 } 2151 } else if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2152 return; 2153 } 2154 } 2155 2156 if (animating) { 2157 mFullRedrawNeeded = true; 2158 scheduleTraversals(); 2159 } 2160 } 2161 2162 /** 2163 * @return true if drawing was succesfull, false if an error occurred 2164 */ 2165 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2166 boolean scalingRequired, Rect dirty) { 2167 2168 // Draw with software renderer. 2169 Canvas canvas; 2170 try { 2171 int left = dirty.left; 2172 int top = dirty.top; 2173 int right = dirty.right; 2174 int bottom = dirty.bottom; 2175 2176 final long lockCanvasStartTime; 2177 if (ViewDebug.DEBUG_LATENCY) { 2178 lockCanvasStartTime = System.nanoTime(); 2179 } 2180 2181 canvas = mSurface.lockCanvas(dirty); 2182 2183 if (ViewDebug.DEBUG_LATENCY) { 2184 long now = System.nanoTime(); 2185 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- lockCanvas() took " 2186 + ((now - lockCanvasStartTime) * 0.000001f) + "ms"); 2187 } 2188 2189 if (left != dirty.left || top != dirty.top || right != dirty.right || 2190 bottom != dirty.bottom) { 2191 attachInfo.mIgnoreDirtyState = true; 2192 } 2193 2194 // TODO: Do this in native 2195 canvas.setDensity(mDensity); 2196 } catch (Surface.OutOfResourcesException e) { 2197 Log.e(TAG, "OutOfResourcesException locking surface", e); 2198 try { 2199 if (!sWindowSession.outOfMemory(mWindow)) { 2200 Slog.w(TAG, "No processes killed for memory; killing self"); 2201 Process.killProcess(Process.myPid()); 2202 } 2203 } catch (RemoteException ex) { 2204 } 2205 mLayoutRequested = true; // ask wm for a new surface next time. 2206 return false; 2207 } catch (IllegalArgumentException e) { 2208 Log.e(TAG, "IllegalArgumentException locking surface", e); 2209 // Don't assume this is due to out of memory, it could be 2210 // something else, and if it is something else then we could 2211 // kill stuff (or ourself) for no reason. 2212 mLayoutRequested = true; // ask wm for a new surface next time. 2213 return false; 2214 } 2215 2216 try { 2217 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2218 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2219 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2220 //canvas.drawARGB(255, 255, 0, 0); 2221 } 2222 2223 long startTime = 0L; 2224 if (ViewDebug.DEBUG_PROFILE_DRAWING) { 2225 startTime = SystemClock.elapsedRealtime(); 2226 } 2227 2228 // If this bitmap's format includes an alpha channel, we 2229 // need to clear it before drawing so that the child will 2230 // properly re-composite its drawing on a transparent 2231 // background. This automatically respects the clip/dirty region 2232 // or 2233 // If we are applying an offset, we need to clear the area 2234 // where the offset doesn't appear to avoid having garbage 2235 // left in the blank areas. 2236 if (!canvas.isOpaque() || yoff != 0) { 2237 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2238 } 2239 2240 dirty.setEmpty(); 2241 mIsAnimating = false; 2242 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2243 mView.mPrivateFlags |= View.DRAWN; 2244 2245 if (DEBUG_DRAW) { 2246 Context cxt = mView.getContext(); 2247 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2248 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2249 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2250 } 2251 try { 2252 canvas.translate(0, -yoff); 2253 if (mTranslator != null) { 2254 mTranslator.translateCanvas(canvas); 2255 } 2256 canvas.setScreenDensity(scalingRequired 2257 ? DisplayMetrics.DENSITY_DEVICE : 0); 2258 attachInfo.mSetIgnoreDirtyState = false; 2259 2260 final long drawStartTime; 2261 if (ViewDebug.DEBUG_LATENCY) { 2262 drawStartTime = System.nanoTime(); 2263 } 2264 2265 mView.draw(canvas); 2266 2267 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2268 2269 if (ViewDebug.DEBUG_LATENCY) { 2270 long now = System.nanoTime(); 2271 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- draw() took " 2272 + ((now - drawStartTime) * 0.000001f) + "ms"); 2273 } 2274 } finally { 2275 if (!attachInfo.mSetIgnoreDirtyState) { 2276 // Only clear the flag if it was not set during the mView.draw() call 2277 attachInfo.mIgnoreDirtyState = false; 2278 } 2279 } 2280 2281 if (false && ViewDebug.consistencyCheckEnabled) { 2282 mView.dispatchConsistencyCheck(ViewDebug.CONSISTENCY_DRAWING); 2283 } 2284 2285 if (ViewDebug.DEBUG_PROFILE_DRAWING) { 2286 EventLog.writeEvent(60000, SystemClock.elapsedRealtime() - startTime); 2287 } 2288 } finally { 2289 final long unlockCanvasAndPostStartTime; 2290 if (ViewDebug.DEBUG_LATENCY) { 2291 unlockCanvasAndPostStartTime = System.nanoTime(); 2292 } 2293 2294 surface.unlockCanvasAndPost(canvas); 2295 2296 if (ViewDebug.DEBUG_LATENCY) { 2297 long now = System.nanoTime(); 2298 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- unlockCanvasAndPost() took " 2299 + ((now - unlockCanvasAndPostStartTime) * 0.000001f) + "ms"); 2300 } 2301 2302 if (LOCAL_LOGV) { 2303 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2304 } 2305 } 2306 return true; 2307 } 2308 2309 /** 2310 * We want to draw a highlight around the current accessibility focused. 2311 * Since adding a style for all possible view is not a viable option we 2312 * have this specialized drawing method. 2313 * 2314 * Note: We are doing this here to be able to draw the highlight for 2315 * virtual views in addition to real ones. 2316 * 2317 * @param canvas The canvas on which to draw. 2318 */ 2319 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2320 if (!AccessibilityManager.getInstance(mView.mContext).isEnabled()) { 2321 return; 2322 } 2323 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2324 return; 2325 } 2326 Drawable drawable = getAccessibilityFocusedDrawable(); 2327 if (drawable == null) { 2328 return; 2329 } 2330 AccessibilityNodeProvider provider = 2331 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2332 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2333 if (provider == null) { 2334 mAccessibilityFocusedHost.getDrawingRect(bounds); 2335 if (mView instanceof ViewGroup) { 2336 ViewGroup viewGroup = (ViewGroup) mView; 2337 viewGroup.offsetDescendantRectToMyCoords(mAccessibilityFocusedHost, bounds); 2338 } 2339 } else { 2340 if (mAccessibilityFocusedVirtualView == null) { 2341 mAccessibilityFocusedVirtualView = provider.findAccessibilitiyFocus(View.NO_ID); 2342 } 2343 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2344 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2345 } 2346 drawable.setBounds(bounds); 2347 drawable.draw(canvas); 2348 } 2349 2350 private Drawable getAccessibilityFocusedDrawable() { 2351 if (mAttachInfo != null) { 2352 // Lazily load the accessibility focus drawable. 2353 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2354 TypedValue value = new TypedValue(); 2355 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2356 R.attr.accessibilityFocusedDrawable, value, true); 2357 if (resolved) { 2358 mAttachInfo.mAccessibilityFocusDrawable = 2359 mView.mContext.getResources().getDrawable(value.resourceId); 2360 } 2361 } 2362 return mAttachInfo.mAccessibilityFocusDrawable; 2363 } 2364 return null; 2365 } 2366 2367 void invalidateDisplayLists() { 2368 final ArrayList<DisplayList> displayLists = mDisplayLists; 2369 final int count = displayLists.size(); 2370 2371 for (int i = 0; i < count; i++) { 2372 displayLists.get(i).invalidate(); 2373 } 2374 2375 displayLists.clear(); 2376 } 2377 2378 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2379 final View.AttachInfo attachInfo = mAttachInfo; 2380 final Rect ci = attachInfo.mContentInsets; 2381 final Rect vi = attachInfo.mVisibleInsets; 2382 int scrollY = 0; 2383 boolean handled = false; 2384 2385 if (vi.left > ci.left || vi.top > ci.top 2386 || vi.right > ci.right || vi.bottom > ci.bottom) { 2387 // We'll assume that we aren't going to change the scroll 2388 // offset, since we want to avoid that unless it is actually 2389 // going to make the focus visible... otherwise we scroll 2390 // all over the place. 2391 scrollY = mScrollY; 2392 // We can be called for two different situations: during a draw, 2393 // to update the scroll position if the focus has changed (in which 2394 // case 'rectangle' is null), or in response to a 2395 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2396 // is non-null and we just want to scroll to whatever that 2397 // rectangle is). 2398 View focus = mRealFocusedView; 2399 2400 // When in touch mode, focus points to the previously focused view, 2401 // which may have been removed from the view hierarchy. The following 2402 // line checks whether the view is still in our hierarchy. 2403 if (focus == null || focus.mAttachInfo != mAttachInfo) { 2404 mRealFocusedView = null; 2405 return false; 2406 } 2407 2408 if (focus != mLastScrolledFocus) { 2409 // If the focus has changed, then ignore any requests to scroll 2410 // to a rectangle; first we want to make sure the entire focus 2411 // view is visible. 2412 rectangle = null; 2413 } 2414 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2415 + " rectangle=" + rectangle + " ci=" + ci 2416 + " vi=" + vi); 2417 if (focus == mLastScrolledFocus && !mScrollMayChange 2418 && rectangle == null) { 2419 // Optimization: if the focus hasn't changed since last 2420 // time, and no layout has happened, then just leave things 2421 // as they are. 2422 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2423 + mScrollY + " vi=" + vi.toShortString()); 2424 } else if (focus != null) { 2425 // We need to determine if the currently focused view is 2426 // within the visible part of the window and, if not, apply 2427 // a pan so it can be seen. 2428 mLastScrolledFocus = focus; 2429 mScrollMayChange = false; 2430 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2431 // Try to find the rectangle from the focus view. 2432 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2433 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2434 + mView.getWidth() + " h=" + mView.getHeight() 2435 + " ci=" + ci.toShortString() 2436 + " vi=" + vi.toShortString()); 2437 if (rectangle == null) { 2438 focus.getFocusedRect(mTempRect); 2439 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2440 + ": focusRect=" + mTempRect.toShortString()); 2441 if (mView instanceof ViewGroup) { 2442 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2443 focus, mTempRect); 2444 } 2445 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2446 "Focus in window: focusRect=" 2447 + mTempRect.toShortString() 2448 + " visRect=" + mVisRect.toShortString()); 2449 } else { 2450 mTempRect.set(rectangle); 2451 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2452 "Request scroll to rect: " 2453 + mTempRect.toShortString() 2454 + " visRect=" + mVisRect.toShortString()); 2455 } 2456 if (mTempRect.intersect(mVisRect)) { 2457 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2458 "Focus window visible rect: " 2459 + mTempRect.toShortString()); 2460 if (mTempRect.height() > 2461 (mView.getHeight()-vi.top-vi.bottom)) { 2462 // If the focus simply is not going to fit, then 2463 // best is probably just to leave things as-is. 2464 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2465 "Too tall; leaving scrollY=" + scrollY); 2466 } else if ((mTempRect.top-scrollY) < vi.top) { 2467 scrollY -= vi.top - (mTempRect.top-scrollY); 2468 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2469 "Top covered; scrollY=" + scrollY); 2470 } else if ((mTempRect.bottom-scrollY) 2471 > (mView.getHeight()-vi.bottom)) { 2472 scrollY += (mTempRect.bottom-scrollY) 2473 - (mView.getHeight()-vi.bottom); 2474 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2475 "Bottom covered; scrollY=" + scrollY); 2476 } 2477 handled = true; 2478 } 2479 } 2480 } 2481 } 2482 2483 if (scrollY != mScrollY) { 2484 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2485 + mScrollY + " , new=" + scrollY); 2486 if (!immediate && mResizeBuffer == null) { 2487 if (mScroller == null) { 2488 mScroller = new Scroller(mView.getContext()); 2489 } 2490 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2491 } else if (mScroller != null) { 2492 mScroller.abortAnimation(); 2493 } 2494 mScrollY = scrollY; 2495 } 2496 2497 return handled; 2498 } 2499 2500 void setAccessibilityFocusedHost(View host) { 2501 if (mAccessibilityFocusedHost != null && mAccessibilityFocusedVirtualView == null) { 2502 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2503 } 2504 mAccessibilityFocusedHost = host; 2505 mAccessibilityFocusedVirtualView = null; 2506 } 2507 2508 public void requestChildFocus(View child, View focused) { 2509 checkThread(); 2510 2511 if (DEBUG_INPUT_RESIZE) { 2512 Log.v(TAG, "Request child focus: focus now " + focused); 2513 } 2514 2515 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, focused); 2516 scheduleTraversals(); 2517 2518 mFocusedView = mRealFocusedView = focused; 2519 } 2520 2521 public void clearChildFocus(View child) { 2522 checkThread(); 2523 2524 if (DEBUG_INPUT_RESIZE) { 2525 Log.v(TAG, "Clearing child focus"); 2526 } 2527 2528 mOldFocusedView = mFocusedView; 2529 2530 // Invoke the listener only if there is no view to take focus 2531 if (focusSearch(null, View.FOCUS_FORWARD) == null) { 2532 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, null); 2533 } 2534 2535 mFocusedView = mRealFocusedView = null; 2536 } 2537 2538 @Override 2539 public ViewParent getParentForAccessibility() { 2540 return null; 2541 } 2542 2543 public void focusableViewAvailable(View v) { 2544 checkThread(); 2545 if (mView != null) { 2546 if (!mView.hasFocus()) { 2547 v.requestFocus(); 2548 } else { 2549 // the one case where will transfer focus away from the current one 2550 // is if the current view is a view group that prefers to give focus 2551 // to its children first AND the view is a descendant of it. 2552 mFocusedView = mView.findFocus(); 2553 boolean descendantsHaveDibsOnFocus = 2554 (mFocusedView instanceof ViewGroup) && 2555 (((ViewGroup) mFocusedView).getDescendantFocusability() == 2556 ViewGroup.FOCUS_AFTER_DESCENDANTS); 2557 if (descendantsHaveDibsOnFocus && isViewDescendantOf(v, mFocusedView)) { 2558 // If a view gets the focus, the listener will be invoked from requestChildFocus() 2559 v.requestFocus(); 2560 } 2561 } 2562 } 2563 } 2564 2565 public void recomputeViewAttributes(View child) { 2566 checkThread(); 2567 if (mView == child) { 2568 mAttachInfo.mRecomputeGlobalAttributes = true; 2569 if (!mWillDrawSoon) { 2570 scheduleTraversals(); 2571 } 2572 } 2573 } 2574 2575 void dispatchDetachedFromWindow() { 2576 if (mView != null && mView.mAttachInfo != null) { 2577 if (mAttachInfo.mHardwareRenderer != null && 2578 mAttachInfo.mHardwareRenderer.isEnabled()) { 2579 mAttachInfo.mHardwareRenderer.validate(); 2580 } 2581 mView.dispatchDetachedFromWindow(); 2582 } 2583 2584 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2585 mAccessibilityManager.removeAccessibilityStateChangeListener( 2586 mAccessibilityInteractionConnectionManager); 2587 removeSendWindowContentChangedCallback(); 2588 2589 destroyHardwareRenderer(); 2590 2591 mView = null; 2592 mAttachInfo.mRootView = null; 2593 mAttachInfo.mSurface = null; 2594 2595 mSurface.release(); 2596 2597 if (mInputQueueCallback != null && mInputQueue != null) { 2598 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2599 mInputQueueCallback = null; 2600 mInputQueue = null; 2601 } else if (mInputEventReceiver != null) { 2602 mInputEventReceiver.dispose(); 2603 mInputEventReceiver = null; 2604 } 2605 try { 2606 sWindowSession.remove(mWindow); 2607 } catch (RemoteException e) { 2608 } 2609 2610 // Dispose the input channel after removing the window so the Window Manager 2611 // doesn't interpret the input channel being closed as an abnormal termination. 2612 if (mInputChannel != null) { 2613 mInputChannel.dispose(); 2614 mInputChannel = null; 2615 } 2616 2617 unscheduleTraversals(); 2618 } 2619 2620 void updateConfiguration(Configuration config, boolean force) { 2621 if (DEBUG_CONFIGURATION) Log.v(TAG, 2622 "Applying new config to window " 2623 + mWindowAttributes.getTitle() 2624 + ": " + config); 2625 2626 CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded(); 2627 if (ci != null) { 2628 config = new Configuration(config); 2629 ci.applyToConfiguration(config); 2630 } 2631 2632 synchronized (sConfigCallbacks) { 2633 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2634 sConfigCallbacks.get(i).onConfigurationChanged(config); 2635 } 2636 } 2637 if (mView != null) { 2638 // At this point the resources have been updated to 2639 // have the most recent config, whatever that is. Use 2640 // the on in them which may be newer. 2641 config = mView.getResources().getConfiguration(); 2642 if (force || mLastConfiguration.diff(config) != 0) { 2643 mLastConfiguration.setTo(config); 2644 mView.dispatchConfigurationChanged(config); 2645 } 2646 } 2647 } 2648 2649 /** 2650 * Return true if child is an ancestor of parent, (or equal to the parent). 2651 */ 2652 static boolean isViewDescendantOf(View child, View parent) { 2653 if (child == parent) { 2654 return true; 2655 } 2656 2657 final ViewParent theParent = child.getParent(); 2658 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2659 } 2660 2661 private static void forceLayout(View view) { 2662 view.forceLayout(); 2663 if (view instanceof ViewGroup) { 2664 ViewGroup group = (ViewGroup) view; 2665 final int count = group.getChildCount(); 2666 for (int i = 0; i < count; i++) { 2667 forceLayout(group.getChildAt(i)); 2668 } 2669 } 2670 } 2671 2672 private final static int MSG_INVALIDATE = 1; 2673 private final static int MSG_INVALIDATE_RECT = 2; 2674 private final static int MSG_DIE = 3; 2675 private final static int MSG_RESIZED = 4; 2676 private final static int MSG_RESIZED_REPORT = 5; 2677 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2678 private final static int MSG_DISPATCH_KEY = 7; 2679 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2680 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2681 private final static int MSG_IME_FINISHED_EVENT = 10; 2682 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2683 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2684 private final static int MSG_CHECK_FOCUS = 13; 2685 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2686 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2687 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2688 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2689 private final static int MSG_UPDATE_CONFIGURATION = 18; 2690 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2691 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2692 private final static int MSG_INVALIDATE_DISPLAY_LIST = 21; 2693 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 22; 2694 private final static int MSG_DISPATCH_DONE_ANIMATING = 23; 2695 2696 final class ViewRootHandler extends Handler { 2697 @Override 2698 public String getMessageName(Message message) { 2699 switch (message.what) { 2700 case MSG_INVALIDATE: 2701 return "MSG_INVALIDATE"; 2702 case MSG_INVALIDATE_RECT: 2703 return "MSG_INVALIDATE_RECT"; 2704 case MSG_DIE: 2705 return "MSG_DIE"; 2706 case MSG_RESIZED: 2707 return "MSG_RESIZED"; 2708 case MSG_RESIZED_REPORT: 2709 return "MSG_RESIZED_REPORT"; 2710 case MSG_WINDOW_FOCUS_CHANGED: 2711 return "MSG_WINDOW_FOCUS_CHANGED"; 2712 case MSG_DISPATCH_KEY: 2713 return "MSG_DISPATCH_KEY"; 2714 case MSG_DISPATCH_APP_VISIBILITY: 2715 return "MSG_DISPATCH_APP_VISIBILITY"; 2716 case MSG_DISPATCH_GET_NEW_SURFACE: 2717 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2718 case MSG_IME_FINISHED_EVENT: 2719 return "MSG_IME_FINISHED_EVENT"; 2720 case MSG_DISPATCH_KEY_FROM_IME: 2721 return "MSG_DISPATCH_KEY_FROM_IME"; 2722 case MSG_FINISH_INPUT_CONNECTION: 2723 return "MSG_FINISH_INPUT_CONNECTION"; 2724 case MSG_CHECK_FOCUS: 2725 return "MSG_CHECK_FOCUS"; 2726 case MSG_CLOSE_SYSTEM_DIALOGS: 2727 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2728 case MSG_DISPATCH_DRAG_EVENT: 2729 return "MSG_DISPATCH_DRAG_EVENT"; 2730 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2731 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2732 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2733 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2734 case MSG_UPDATE_CONFIGURATION: 2735 return "MSG_UPDATE_CONFIGURATION"; 2736 case MSG_PROCESS_INPUT_EVENTS: 2737 return "MSG_PROCESS_INPUT_EVENTS"; 2738 case MSG_DISPATCH_SCREEN_STATE: 2739 return "MSG_DISPATCH_SCREEN_STATE"; 2740 case MSG_INVALIDATE_DISPLAY_LIST: 2741 return "MSG_INVALIDATE_DISPLAY_LIST"; 2742 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2743 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2744 case MSG_DISPATCH_DONE_ANIMATING: 2745 return "MSG_DISPATCH_DONE_ANIMATING"; 2746 } 2747 return super.getMessageName(message); 2748 } 2749 2750 @Override 2751 public void handleMessage(Message msg) { 2752 switch (msg.what) { 2753 case MSG_INVALIDATE: 2754 ((View) msg.obj).invalidate(); 2755 break; 2756 case MSG_INVALIDATE_RECT: 2757 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2758 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2759 info.release(); 2760 break; 2761 case MSG_IME_FINISHED_EVENT: 2762 handleImeFinishedEvent(msg.arg1, msg.arg2 != 0); 2763 break; 2764 case MSG_PROCESS_INPUT_EVENTS: 2765 mProcessInputEventsScheduled = false; 2766 doProcessInputEvents(); 2767 break; 2768 case MSG_DISPATCH_APP_VISIBILITY: 2769 handleAppVisibility(msg.arg1 != 0); 2770 break; 2771 case MSG_DISPATCH_GET_NEW_SURFACE: 2772 handleGetNewSurface(); 2773 break; 2774 case MSG_RESIZED: 2775 ResizedInfo ri = (ResizedInfo)msg.obj; 2776 2777 if (mWinFrame.width() == msg.arg1 && mWinFrame.height() == msg.arg2 2778 && mPendingContentInsets.equals(ri.coveredInsets) 2779 && mPendingVisibleInsets.equals(ri.visibleInsets) 2780 && ((ResizedInfo)msg.obj).newConfig == null) { 2781 break; 2782 } 2783 // fall through... 2784 case MSG_RESIZED_REPORT: 2785 if (mAdded) { 2786 Configuration config = ((ResizedInfo)msg.obj).newConfig; 2787 if (config != null) { 2788 updateConfiguration(config, false); 2789 } 2790 mWinFrame.left = 0; 2791 mWinFrame.right = msg.arg1; 2792 mWinFrame.top = 0; 2793 mWinFrame.bottom = msg.arg2; 2794 mPendingContentInsets.set(((ResizedInfo)msg.obj).coveredInsets); 2795 mPendingVisibleInsets.set(((ResizedInfo)msg.obj).visibleInsets); 2796 if (msg.what == MSG_RESIZED_REPORT) { 2797 mReportNextDraw = true; 2798 } 2799 2800 if (mView != null) { 2801 forceLayout(mView); 2802 } 2803 requestLayout(); 2804 } 2805 break; 2806 case MSG_WINDOW_FOCUS_CHANGED: { 2807 if (mAdded) { 2808 boolean hasWindowFocus = msg.arg1 != 0; 2809 mAttachInfo.mHasWindowFocus = hasWindowFocus; 2810 2811 profileRendering(hasWindowFocus); 2812 2813 if (hasWindowFocus) { 2814 boolean inTouchMode = msg.arg2 != 0; 2815 ensureTouchModeLocally(inTouchMode); 2816 2817 if (mAttachInfo.mHardwareRenderer != null && 2818 mSurface != null && mSurface.isValid()) { 2819 mFullRedrawNeeded = true; 2820 try { 2821 mAttachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2822 mHolder); 2823 } catch (Surface.OutOfResourcesException e) { 2824 Log.e(TAG, "OutOfResourcesException locking surface", e); 2825 try { 2826 if (!sWindowSession.outOfMemory(mWindow)) { 2827 Slog.w(TAG, "No processes killed for memory; killing self"); 2828 Process.killProcess(Process.myPid()); 2829 } 2830 } catch (RemoteException ex) { 2831 } 2832 // Retry in a bit. 2833 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 2834 return; 2835 } 2836 } 2837 } 2838 2839 mLastWasImTarget = WindowManager.LayoutParams 2840 .mayUseInputMethod(mWindowAttributes.flags); 2841 2842 InputMethodManager imm = InputMethodManager.peekInstance(); 2843 if (mView != null) { 2844 if (hasWindowFocus && imm != null && mLastWasImTarget) { 2845 imm.startGettingWindowFocus(mView); 2846 } 2847 mAttachInfo.mKeyDispatchState.reset(); 2848 mView.dispatchWindowFocusChanged(hasWindowFocus); 2849 } 2850 2851 // Note: must be done after the focus change callbacks, 2852 // so all of the view state is set up correctly. 2853 if (hasWindowFocus) { 2854 if (imm != null && mLastWasImTarget) { 2855 imm.onWindowFocus(mView, mView.findFocus(), 2856 mWindowAttributes.softInputMode, 2857 !mHasHadWindowFocus, mWindowAttributes.flags); 2858 } 2859 // Clear the forward bit. We can just do this directly, since 2860 // the window manager doesn't care about it. 2861 mWindowAttributes.softInputMode &= 2862 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2863 ((WindowManager.LayoutParams)mView.getLayoutParams()) 2864 .softInputMode &= 2865 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2866 mHasHadWindowFocus = true; 2867 } 2868 2869 if (mView != null && mAccessibilityManager.isEnabled()) { 2870 if (hasWindowFocus) { 2871 mView.sendAccessibilityEvent( 2872 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2873 // Give accessibility focus to the view that has input 2874 // focus if such, otherwise to the first one. 2875 if (mView instanceof ViewGroup) { 2876 ViewGroup viewGroup = (ViewGroup) mView; 2877 View focused = viewGroup.findFocus(); 2878 if (focused != null) { 2879 focused.requestAccessibilityFocus(); 2880 } 2881 } 2882 // There is no accessibility focus, despite our effort 2883 // above, now just give it to the first view. 2884 if (mAccessibilityFocusedHost == null) { 2885 mView.requestAccessibilityFocus(); 2886 } 2887 } else { 2888 // Clear accessibility focus when the window loses input focus. 2889 setAccessibilityFocusedHost(null); 2890 } 2891 } 2892 } 2893 } break; 2894 case MSG_DIE: 2895 doDie(); 2896 break; 2897 case MSG_DISPATCH_KEY: { 2898 KeyEvent event = (KeyEvent)msg.obj; 2899 enqueueInputEvent(event, null, 0, true); 2900 } break; 2901 case MSG_DISPATCH_KEY_FROM_IME: { 2902 if (LOCAL_LOGV) Log.v( 2903 TAG, "Dispatching key " 2904 + msg.obj + " from IME to " + mView); 2905 KeyEvent event = (KeyEvent)msg.obj; 2906 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 2907 // The IME is trying to say this event is from the 2908 // system! Bad bad bad! 2909 //noinspection UnusedAssignment 2910 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 2911 } 2912 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 2913 } break; 2914 case MSG_FINISH_INPUT_CONNECTION: { 2915 InputMethodManager imm = InputMethodManager.peekInstance(); 2916 if (imm != null) { 2917 imm.reportFinishInputConnection((InputConnection)msg.obj); 2918 } 2919 } break; 2920 case MSG_CHECK_FOCUS: { 2921 InputMethodManager imm = InputMethodManager.peekInstance(); 2922 if (imm != null) { 2923 imm.checkFocus(); 2924 } 2925 } break; 2926 case MSG_CLOSE_SYSTEM_DIALOGS: { 2927 if (mView != null) { 2928 mView.onCloseSystemDialogs((String)msg.obj); 2929 } 2930 } break; 2931 case MSG_DISPATCH_DRAG_EVENT: 2932 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 2933 DragEvent event = (DragEvent)msg.obj; 2934 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 2935 handleDragEvent(event); 2936 } break; 2937 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 2938 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo)msg.obj); 2939 } break; 2940 case MSG_UPDATE_CONFIGURATION: { 2941 Configuration config = (Configuration)msg.obj; 2942 if (config.isOtherSeqNewer(mLastConfiguration)) { 2943 config = mLastConfiguration; 2944 } 2945 updateConfiguration(config, false); 2946 } break; 2947 case MSG_DISPATCH_SCREEN_STATE: { 2948 if (mView != null) { 2949 handleScreenStateChange(msg.arg1 == 1); 2950 } 2951 } break; 2952 case MSG_INVALIDATE_DISPLAY_LIST: { 2953 invalidateDisplayLists(); 2954 } break; 2955 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 2956 setAccessibilityFocusedHost(null); 2957 } break; 2958 case MSG_DISPATCH_DONE_ANIMATING: { 2959 handleDispatchDoneAnimating(); 2960 } break; 2961 } 2962 } 2963 } 2964 2965 final ViewRootHandler mHandler = new ViewRootHandler(); 2966 2967 /** 2968 * Something in the current window tells us we need to change the touch mode. For 2969 * example, we are not in touch mode, and the user touches the screen. 2970 * 2971 * If the touch mode has changed, tell the window manager, and handle it locally. 2972 * 2973 * @param inTouchMode Whether we want to be in touch mode. 2974 * @return True if the touch mode changed and focus changed was changed as a result 2975 */ 2976 boolean ensureTouchMode(boolean inTouchMode) { 2977 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 2978 + "touch mode is " + mAttachInfo.mInTouchMode); 2979 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 2980 2981 // tell the window manager 2982 try { 2983 sWindowSession.setInTouchMode(inTouchMode); 2984 } catch (RemoteException e) { 2985 throw new RuntimeException(e); 2986 } 2987 2988 // handle the change 2989 return ensureTouchModeLocally(inTouchMode); 2990 } 2991 2992 /** 2993 * Ensure that the touch mode for this window is set, and if it is changing, 2994 * take the appropriate action. 2995 * @param inTouchMode Whether we want to be in touch mode. 2996 * @return True if the touch mode changed and focus changed was changed as a result 2997 */ 2998 private boolean ensureTouchModeLocally(boolean inTouchMode) { 2999 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3000 + "touch mode is " + mAttachInfo.mInTouchMode); 3001 3002 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3003 3004 mAttachInfo.mInTouchMode = inTouchMode; 3005 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3006 3007 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3008 } 3009 3010 private boolean enterTouchMode() { 3011 if (mView != null) { 3012 if (mView.hasFocus()) { 3013 // note: not relying on mFocusedView here because this could 3014 // be when the window is first being added, and mFocused isn't 3015 // set yet. 3016 final View focused = mView.findFocus(); 3017 if (focused != null) { 3018 if (focused.isFocusableInTouchMode()) { 3019 return true; 3020 } 3021 final ViewGroup ancestorToTakeFocus = 3022 findAncestorToTakeFocusInTouchMode(focused); 3023 if (ancestorToTakeFocus != null) { 3024 // there is an ancestor that wants focus after its descendants that 3025 // is focusable in touch mode.. give it focus 3026 return ancestorToTakeFocus.requestFocus(); 3027 } 3028 } 3029 // nothing appropriate to have focus in touch mode, clear it out 3030 mView.unFocus(); 3031 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(focused, null); 3032 mFocusedView = null; 3033 mOldFocusedView = null; 3034 return true; 3035 } 3036 } 3037 return false; 3038 } 3039 3040 /** 3041 * Find an ancestor of focused that wants focus after its descendants and is 3042 * focusable in touch mode. 3043 * @param focused The currently focused view. 3044 * @return An appropriate view, or null if no such view exists. 3045 */ 3046 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3047 ViewParent parent = focused.getParent(); 3048 while (parent instanceof ViewGroup) { 3049 final ViewGroup vgParent = (ViewGroup) parent; 3050 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3051 && vgParent.isFocusableInTouchMode()) { 3052 return vgParent; 3053 } 3054 if (vgParent.isRootNamespace()) { 3055 return null; 3056 } else { 3057 parent = vgParent.getParent(); 3058 } 3059 } 3060 return null; 3061 } 3062 3063 private boolean leaveTouchMode() { 3064 if (mView != null) { 3065 boolean inputFocusValid = false; 3066 if (mView.hasFocus()) { 3067 // i learned the hard way to not trust mFocusedView :) 3068 mFocusedView = mView.findFocus(); 3069 if (!(mFocusedView instanceof ViewGroup)) { 3070 // some view has focus, let it keep it 3071 inputFocusValid = true; 3072 } else if (((ViewGroup) mFocusedView).getDescendantFocusability() != 3073 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3074 // some view group has focus, and doesn't prefer its children 3075 // over itself for focus, so let them keep it. 3076 inputFocusValid = true; 3077 } 3078 } 3079 // In accessibility mode we always have a view that has the 3080 // accessibility focus and input focus follows it, i.e. we 3081 // try to give input focus to the accessibility focused view. 3082 if (!AccessibilityManager.getInstance(mView.mContext).isEnabled()) { 3083 // If the current input focus is not valid, find the best view to give 3084 // focus to in this brave new non-touch-mode world. 3085 if (!inputFocusValid) { 3086 final View focused = focusSearch(null, View.FOCUS_DOWN); 3087 if (focused != null) { 3088 return focused.requestFocus(View.FOCUS_DOWN); 3089 } 3090 } 3091 } else { 3092 // If the current input focus is not valid clear it but do not 3093 // give it to another view since the accessibility focus is 3094 // leading now and the input one follows. 3095 if (!inputFocusValid) { 3096 if (mFocusedView != null) { 3097 mView.unFocus(); 3098 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mFocusedView, null); 3099 mFocusedView = null; 3100 mOldFocusedView = null; 3101 return true; 3102 } 3103 } 3104 } 3105 } 3106 return false; 3107 } 3108 3109 private void deliverInputEvent(QueuedInputEvent q) { 3110 if (ViewDebug.DEBUG_LATENCY) { 3111 q.mDeliverTimeNanos = System.nanoTime(); 3112 } 3113 3114 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 3115 try { 3116 if (q.mEvent instanceof KeyEvent) { 3117 deliverKeyEvent(q); 3118 } else { 3119 final int source = q.mEvent.getSource(); 3120 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3121 deliverPointerEvent(q); 3122 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3123 deliverTrackballEvent(q); 3124 } else { 3125 deliverGenericMotionEvent(q); 3126 } 3127 } 3128 } finally { 3129 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 3130 } 3131 } 3132 3133 private void deliverPointerEvent(QueuedInputEvent q) { 3134 final MotionEvent event = (MotionEvent)q.mEvent; 3135 final boolean isTouchEvent = event.isTouchEvent(); 3136 if (mInputEventConsistencyVerifier != null) { 3137 if (isTouchEvent) { 3138 mInputEventConsistencyVerifier.onTouchEvent(event, 0); 3139 } else { 3140 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 3141 } 3142 } 3143 3144 // If there is no view, then the event will not be handled. 3145 if (mView == null || !mAdded) { 3146 finishInputEvent(q, false); 3147 return; 3148 } 3149 3150 // Translate the pointer event for compatibility, if needed. 3151 if (mTranslator != null) { 3152 mTranslator.translateEventInScreenToAppWindow(event); 3153 } 3154 3155 // Enter touch mode on down or scroll. 3156 final int action = event.getAction(); 3157 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3158 ensureTouchMode(true); 3159 } 3160 3161 // Offset the scroll position. 3162 if (mCurScrollY != 0) { 3163 event.offsetLocation(0, mCurScrollY); 3164 } 3165 if (MEASURE_LATENCY) { 3166 lt.sample("A Dispatching PointerEvents", System.nanoTime() - event.getEventTimeNano()); 3167 } 3168 3169 // Remember the touch position for possible drag-initiation. 3170 if (isTouchEvent) { 3171 mLastTouchPoint.x = event.getRawX(); 3172 mLastTouchPoint.y = event.getRawY(); 3173 } 3174 3175 // Dispatch touch to view hierarchy. 3176 boolean handled = mView.dispatchPointerEvent(event); 3177 if (MEASURE_LATENCY) { 3178 lt.sample("B Dispatched PointerEvents ", System.nanoTime() - event.getEventTimeNano()); 3179 } 3180 if (handled) { 3181 finishInputEvent(q, true); 3182 return; 3183 } 3184 3185 // Pointer event was unhandled. 3186 finishInputEvent(q, false); 3187 } 3188 3189 private void deliverTrackballEvent(QueuedInputEvent q) { 3190 final MotionEvent event = (MotionEvent)q.mEvent; 3191 if (mInputEventConsistencyVerifier != null) { 3192 mInputEventConsistencyVerifier.onTrackballEvent(event, 0); 3193 } 3194 3195 // If there is no view, then the event will not be handled. 3196 if (mView == null || !mAdded) { 3197 finishInputEvent(q, false); 3198 return; 3199 } 3200 3201 // Deliver the trackball event to the view. 3202 if (mView.dispatchTrackballEvent(event)) { 3203 // If we reach this, we delivered a trackball event to mView and 3204 // mView consumed it. Because we will not translate the trackball 3205 // event into a key event, touch mode will not exit, so we exit 3206 // touch mode here. 3207 ensureTouchMode(false); 3208 3209 finishInputEvent(q, true); 3210 mLastTrackballTime = Integer.MIN_VALUE; 3211 return; 3212 } 3213 3214 // Translate the trackball event into DPAD keys and try to deliver those. 3215 final TrackballAxis x = mTrackballAxisX; 3216 final TrackballAxis y = mTrackballAxisY; 3217 3218 long curTime = SystemClock.uptimeMillis(); 3219 if ((mLastTrackballTime + MAX_TRACKBALL_DELAY) < curTime) { 3220 // It has been too long since the last movement, 3221 // so restart at the beginning. 3222 x.reset(0); 3223 y.reset(0); 3224 mLastTrackballTime = curTime; 3225 } 3226 3227 final int action = event.getAction(); 3228 final int metaState = event.getMetaState(); 3229 switch (action) { 3230 case MotionEvent.ACTION_DOWN: 3231 x.reset(2); 3232 y.reset(2); 3233 enqueueInputEvent(new KeyEvent(curTime, curTime, 3234 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3235 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3236 InputDevice.SOURCE_KEYBOARD)); 3237 break; 3238 case MotionEvent.ACTION_UP: 3239 x.reset(2); 3240 y.reset(2); 3241 enqueueInputEvent(new KeyEvent(curTime, curTime, 3242 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3243 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3244 InputDevice.SOURCE_KEYBOARD)); 3245 break; 3246 } 3247 3248 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + x.position + " step=" 3249 + x.step + " dir=" + x.dir + " acc=" + x.acceleration 3250 + " move=" + event.getX() 3251 + " / Y=" + y.position + " step=" 3252 + y.step + " dir=" + y.dir + " acc=" + y.acceleration 3253 + " move=" + event.getY()); 3254 final float xOff = x.collect(event.getX(), event.getEventTime(), "X"); 3255 final float yOff = y.collect(event.getY(), event.getEventTime(), "Y"); 3256 3257 // Generate DPAD events based on the trackball movement. 3258 // We pick the axis that has moved the most as the direction of 3259 // the DPAD. When we generate DPAD events for one axis, then the 3260 // other axis is reset -- we don't want to perform DPAD jumps due 3261 // to slight movements in the trackball when making major movements 3262 // along the other axis. 3263 int keycode = 0; 3264 int movement = 0; 3265 float accel = 1; 3266 if (xOff > yOff) { 3267 movement = x.generate((2/event.getXPrecision())); 3268 if (movement != 0) { 3269 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 3270 : KeyEvent.KEYCODE_DPAD_LEFT; 3271 accel = x.acceleration; 3272 y.reset(2); 3273 } 3274 } else if (yOff > 0) { 3275 movement = y.generate((2/event.getYPrecision())); 3276 if (movement != 0) { 3277 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 3278 : KeyEvent.KEYCODE_DPAD_UP; 3279 accel = y.acceleration; 3280 x.reset(2); 3281 } 3282 } 3283 3284 if (keycode != 0) { 3285 if (movement < 0) movement = -movement; 3286 int accelMovement = (int)(movement * accel); 3287 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 3288 + " accelMovement=" + accelMovement 3289 + " accel=" + accel); 3290 if (accelMovement > movement) { 3291 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3292 + keycode); 3293 movement--; 3294 int repeatCount = accelMovement - movement; 3295 enqueueInputEvent(new KeyEvent(curTime, curTime, 3296 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 3297 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3298 InputDevice.SOURCE_KEYBOARD)); 3299 } 3300 while (movement > 0) { 3301 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3302 + keycode); 3303 movement--; 3304 curTime = SystemClock.uptimeMillis(); 3305 enqueueInputEvent(new KeyEvent(curTime, curTime, 3306 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 3307 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3308 InputDevice.SOURCE_KEYBOARD)); 3309 enqueueInputEvent(new KeyEvent(curTime, curTime, 3310 KeyEvent.ACTION_UP, keycode, 0, metaState, 3311 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3312 InputDevice.SOURCE_KEYBOARD)); 3313 } 3314 mLastTrackballTime = curTime; 3315 } 3316 3317 // Unfortunately we can't tell whether the application consumed the keys, so 3318 // we always consider the trackball event handled. 3319 finishInputEvent(q, true); 3320 } 3321 3322 private void deliverGenericMotionEvent(QueuedInputEvent q) { 3323 final MotionEvent event = (MotionEvent)q.mEvent; 3324 if (mInputEventConsistencyVerifier != null) { 3325 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 3326 } 3327 3328 final int source = event.getSource(); 3329 final boolean isJoystick = (source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0; 3330 3331 // If there is no view, then the event will not be handled. 3332 if (mView == null || !mAdded) { 3333 if (isJoystick) { 3334 updateJoystickDirection(event, false); 3335 } 3336 finishInputEvent(q, false); 3337 return; 3338 } 3339 3340 // Deliver the event to the view. 3341 if (mView.dispatchGenericMotionEvent(event)) { 3342 if (isJoystick) { 3343 updateJoystickDirection(event, false); 3344 } 3345 finishInputEvent(q, true); 3346 return; 3347 } 3348 3349 if (isJoystick) { 3350 // Translate the joystick event into DPAD keys and try to deliver those. 3351 updateJoystickDirection(event, true); 3352 finishInputEvent(q, true); 3353 } else { 3354 finishInputEvent(q, false); 3355 } 3356 } 3357 3358 private void updateJoystickDirection(MotionEvent event, boolean synthesizeNewKeys) { 3359 final long time = event.getEventTime(); 3360 final int metaState = event.getMetaState(); 3361 final int deviceId = event.getDeviceId(); 3362 final int source = event.getSource(); 3363 3364 int xDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_X)); 3365 if (xDirection == 0) { 3366 xDirection = joystickAxisValueToDirection(event.getX()); 3367 } 3368 3369 int yDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 3370 if (yDirection == 0) { 3371 yDirection = joystickAxisValueToDirection(event.getY()); 3372 } 3373 3374 if (xDirection != mLastJoystickXDirection) { 3375 if (mLastJoystickXKeyCode != 0) { 3376 enqueueInputEvent(new KeyEvent(time, time, 3377 KeyEvent.ACTION_UP, mLastJoystickXKeyCode, 0, metaState, 3378 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3379 mLastJoystickXKeyCode = 0; 3380 } 3381 3382 mLastJoystickXDirection = xDirection; 3383 3384 if (xDirection != 0 && synthesizeNewKeys) { 3385 mLastJoystickXKeyCode = xDirection > 0 3386 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 3387 enqueueInputEvent(new KeyEvent(time, time, 3388 KeyEvent.ACTION_DOWN, mLastJoystickXKeyCode, 0, metaState, 3389 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3390 } 3391 } 3392 3393 if (yDirection != mLastJoystickYDirection) { 3394 if (mLastJoystickYKeyCode != 0) { 3395 enqueueInputEvent(new KeyEvent(time, time, 3396 KeyEvent.ACTION_UP, mLastJoystickYKeyCode, 0, metaState, 3397 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3398 mLastJoystickYKeyCode = 0; 3399 } 3400 3401 mLastJoystickYDirection = yDirection; 3402 3403 if (yDirection != 0 && synthesizeNewKeys) { 3404 mLastJoystickYKeyCode = yDirection > 0 3405 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 3406 enqueueInputEvent(new KeyEvent(time, time, 3407 KeyEvent.ACTION_DOWN, mLastJoystickYKeyCode, 0, metaState, 3408 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3409 } 3410 } 3411 } 3412 3413 private static int joystickAxisValueToDirection(float value) { 3414 if (value >= 0.5f) { 3415 return 1; 3416 } else if (value <= -0.5f) { 3417 return -1; 3418 } else { 3419 return 0; 3420 } 3421 } 3422 3423 /** 3424 * Returns true if the key is used for keyboard navigation. 3425 * @param keyEvent The key event. 3426 * @return True if the key is used for keyboard navigation. 3427 */ 3428 private static boolean isNavigationKey(KeyEvent keyEvent) { 3429 switch (keyEvent.getKeyCode()) { 3430 case KeyEvent.KEYCODE_DPAD_LEFT: 3431 case KeyEvent.KEYCODE_DPAD_RIGHT: 3432 case KeyEvent.KEYCODE_DPAD_UP: 3433 case KeyEvent.KEYCODE_DPAD_DOWN: 3434 case KeyEvent.KEYCODE_DPAD_CENTER: 3435 case KeyEvent.KEYCODE_PAGE_UP: 3436 case KeyEvent.KEYCODE_PAGE_DOWN: 3437 case KeyEvent.KEYCODE_MOVE_HOME: 3438 case KeyEvent.KEYCODE_MOVE_END: 3439 case KeyEvent.KEYCODE_TAB: 3440 case KeyEvent.KEYCODE_SPACE: 3441 case KeyEvent.KEYCODE_ENTER: 3442 return true; 3443 } 3444 return false; 3445 } 3446 3447 /** 3448 * Returns true if the key is used for typing. 3449 * @param keyEvent The key event. 3450 * @return True if the key is used for typing. 3451 */ 3452 private static boolean isTypingKey(KeyEvent keyEvent) { 3453 return keyEvent.getUnicodeChar() > 0; 3454 } 3455 3456 /** 3457 * See if the key event means we should leave touch mode (and leave touch mode if so). 3458 * @param event The key event. 3459 * @return Whether this key event should be consumed (meaning the act of 3460 * leaving touch mode alone is considered the event). 3461 */ 3462 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 3463 // Only relevant in touch mode. 3464 if (!mAttachInfo.mInTouchMode) { 3465 return false; 3466 } 3467 3468 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 3469 final int action = event.getAction(); 3470 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 3471 return false; 3472 } 3473 3474 // Don't leave touch mode if the IME told us not to. 3475 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 3476 return false; 3477 } 3478 3479 // If the key can be used for keyboard navigation then leave touch mode 3480 // and select a focused view if needed (in ensureTouchMode). 3481 // When a new focused view is selected, we consume the navigation key because 3482 // navigation doesn't make much sense unless a view already has focus so 3483 // the key's purpose is to set focus. 3484 if (isNavigationKey(event)) { 3485 return ensureTouchMode(false); 3486 } 3487 3488 // If the key can be used for typing then leave touch mode 3489 // and select a focused view if needed (in ensureTouchMode). 3490 // Always allow the view to process the typing key. 3491 if (isTypingKey(event)) { 3492 ensureTouchMode(false); 3493 return false; 3494 } 3495 3496 return false; 3497 } 3498 3499 private void deliverKeyEvent(QueuedInputEvent q) { 3500 final KeyEvent event = (KeyEvent)q.mEvent; 3501 if (mInputEventConsistencyVerifier != null) { 3502 mInputEventConsistencyVerifier.onKeyEvent(event, 0); 3503 } 3504 3505 if ((q.mFlags & QueuedInputEvent.FLAG_DELIVER_POST_IME) == 0) { 3506 // If there is no view, then the event will not be handled. 3507 if (mView == null || !mAdded) { 3508 finishInputEvent(q, false); 3509 return; 3510 } 3511 3512 if (LOCAL_LOGV) Log.v(TAG, "Dispatching key " + event + " to " + mView); 3513 3514 // Perform predispatching before the IME. 3515 if (mView.dispatchKeyEventPreIme(event)) { 3516 finishInputEvent(q, true); 3517 return; 3518 } 3519 3520 // Dispatch to the IME before propagating down the view hierarchy. 3521 // The IME will eventually call back into handleImeFinishedEvent. 3522 if (mLastWasImTarget) { 3523 InputMethodManager imm = InputMethodManager.peekInstance(); 3524 if (imm != null) { 3525 final int seq = event.getSequenceNumber(); 3526 if (DEBUG_IMF) Log.v(TAG, "Sending key event to IME: seq=" 3527 + seq + " event=" + event); 3528 imm.dispatchKeyEvent(mView.getContext(), seq, event, mInputMethodCallback); 3529 return; 3530 } 3531 } 3532 } 3533 3534 // Not dispatching to IME, continue with post IME actions. 3535 deliverKeyEventPostIme(q); 3536 } 3537 3538 void handleImeFinishedEvent(int seq, boolean handled) { 3539 final QueuedInputEvent q = mCurrentInputEvent; 3540 if (q != null && q.mEvent.getSequenceNumber() == seq) { 3541 final KeyEvent event = (KeyEvent)q.mEvent; 3542 if (DEBUG_IMF) { 3543 Log.v(TAG, "IME finished event: seq=" + seq 3544 + " handled=" + handled + " event=" + event); 3545 } 3546 if (handled) { 3547 finishInputEvent(q, true); 3548 } else { 3549 deliverKeyEventPostIme(q); 3550 } 3551 } else { 3552 if (DEBUG_IMF) { 3553 Log.v(TAG, "IME finished event: seq=" + seq 3554 + " handled=" + handled + ", event not found!"); 3555 } 3556 } 3557 } 3558 3559 private void deliverKeyEventPostIme(QueuedInputEvent q) { 3560 final KeyEvent event = (KeyEvent)q.mEvent; 3561 if (ViewDebug.DEBUG_LATENCY) { 3562 q.mDeliverPostImeTimeNanos = System.nanoTime(); 3563 } 3564 3565 // If the view went away, then the event will not be handled. 3566 if (mView == null || !mAdded) { 3567 finishInputEvent(q, false); 3568 return; 3569 } 3570 3571 // If the key's purpose is to exit touch mode then we consume it and consider it handled. 3572 if (checkForLeavingTouchModeAndConsume(event)) { 3573 finishInputEvent(q, true); 3574 return; 3575 } 3576 3577 // Make sure the fallback event policy sees all keys that will be delivered to the 3578 // view hierarchy. 3579 mFallbackEventHandler.preDispatchKeyEvent(event); 3580 3581 // Deliver the key to the view hierarchy. 3582 if (mView.dispatchKeyEvent(event)) { 3583 finishInputEvent(q, true); 3584 return; 3585 } 3586 3587 // If the Control modifier is held, try to interpret the key as a shortcut. 3588 if (event.getAction() == KeyEvent.ACTION_DOWN 3589 && event.isCtrlPressed() 3590 && event.getRepeatCount() == 0 3591 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3592 if (mView.dispatchKeyShortcutEvent(event)) { 3593 finishInputEvent(q, true); 3594 return; 3595 } 3596 } 3597 3598 // Apply the fallback event policy. 3599 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3600 finishInputEvent(q, true); 3601 return; 3602 } 3603 3604 // Handle automatic focus changes. 3605 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3606 int direction = 0; 3607 switch (event.getKeyCode()) { 3608 case KeyEvent.KEYCODE_DPAD_LEFT: 3609 if (event.hasNoModifiers()) { 3610 direction = View.FOCUS_LEFT; 3611 } 3612 break; 3613 case KeyEvent.KEYCODE_DPAD_RIGHT: 3614 if (event.hasNoModifiers()) { 3615 direction = View.FOCUS_RIGHT; 3616 } 3617 break; 3618 case KeyEvent.KEYCODE_DPAD_UP: 3619 if (event.hasNoModifiers()) { 3620 direction = View.FOCUS_UP; 3621 } 3622 break; 3623 case KeyEvent.KEYCODE_DPAD_DOWN: 3624 if (event.hasNoModifiers()) { 3625 direction = View.FOCUS_DOWN; 3626 } 3627 break; 3628 case KeyEvent.KEYCODE_TAB: 3629 if (event.hasNoModifiers()) { 3630 direction = View.FOCUS_FORWARD; 3631 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3632 direction = View.FOCUS_BACKWARD; 3633 } 3634 break; 3635 } 3636 if (direction != 0) { 3637 View focused = mView.findFocus(); 3638 if (focused != null) { 3639 View v = focused.focusSearch(direction); 3640 if (v != null && v != focused) { 3641 // do the math the get the interesting rect 3642 // of previous focused into the coord system of 3643 // newly focused view 3644 focused.getFocusedRect(mTempRect); 3645 if (mView instanceof ViewGroup) { 3646 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3647 focused, mTempRect); 3648 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3649 v, mTempRect); 3650 } 3651 if (v.requestFocus(direction, mTempRect)) { 3652 playSoundEffect(SoundEffectConstants 3653 .getContantForFocusDirection(direction)); 3654 finishInputEvent(q, true); 3655 return; 3656 } 3657 } 3658 3659 // Give the focused view a last chance to handle the dpad key. 3660 if (mView.dispatchUnhandledMove(focused, direction)) { 3661 finishInputEvent(q, true); 3662 return; 3663 } 3664 } 3665 } 3666 } 3667 3668 // Key was unhandled. 3669 finishInputEvent(q, false); 3670 } 3671 3672 /* drag/drop */ 3673 void setLocalDragState(Object obj) { 3674 mLocalDragState = obj; 3675 } 3676 3677 private void handleDragEvent(DragEvent event) { 3678 // From the root, only drag start/end/location are dispatched. entered/exited 3679 // are determined and dispatched by the viewgroup hierarchy, who then report 3680 // that back here for ultimate reporting back to the framework. 3681 if (mView != null && mAdded) { 3682 final int what = event.mAction; 3683 3684 if (what == DragEvent.ACTION_DRAG_EXITED) { 3685 // A direct EXITED event means that the window manager knows we've just crossed 3686 // a window boundary, so the current drag target within this one must have 3687 // just been exited. Send it the usual notifications and then we're done 3688 // for now. 3689 mView.dispatchDragEvent(event); 3690 } else { 3691 // Cache the drag description when the operation starts, then fill it in 3692 // on subsequent calls as a convenience 3693 if (what == DragEvent.ACTION_DRAG_STARTED) { 3694 mCurrentDragView = null; // Start the current-recipient tracking 3695 mDragDescription = event.mClipDescription; 3696 } else { 3697 event.mClipDescription = mDragDescription; 3698 } 3699 3700 // For events with a [screen] location, translate into window coordinates 3701 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 3702 mDragPoint.set(event.mX, event.mY); 3703 if (mTranslator != null) { 3704 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 3705 } 3706 3707 if (mCurScrollY != 0) { 3708 mDragPoint.offset(0, mCurScrollY); 3709 } 3710 3711 event.mX = mDragPoint.x; 3712 event.mY = mDragPoint.y; 3713 } 3714 3715 // Remember who the current drag target is pre-dispatch 3716 final View prevDragView = mCurrentDragView; 3717 3718 // Now dispatch the drag/drop event 3719 boolean result = mView.dispatchDragEvent(event); 3720 3721 // If we changed apparent drag target, tell the OS about it 3722 if (prevDragView != mCurrentDragView) { 3723 try { 3724 if (prevDragView != null) { 3725 sWindowSession.dragRecipientExited(mWindow); 3726 } 3727 if (mCurrentDragView != null) { 3728 sWindowSession.dragRecipientEntered(mWindow); 3729 } 3730 } catch (RemoteException e) { 3731 Slog.e(TAG, "Unable to note drag target change"); 3732 } 3733 } 3734 3735 // Report the drop result when we're done 3736 if (what == DragEvent.ACTION_DROP) { 3737 mDragDescription = null; 3738 try { 3739 Log.i(TAG, "Reporting drop result: " + result); 3740 sWindowSession.reportDropResult(mWindow, result); 3741 } catch (RemoteException e) { 3742 Log.e(TAG, "Unable to report drop result"); 3743 } 3744 } 3745 3746 // When the drag operation ends, release any local state object 3747 // that may have been in use 3748 if (what == DragEvent.ACTION_DRAG_ENDED) { 3749 setLocalDragState(null); 3750 } 3751 } 3752 } 3753 event.recycle(); 3754 } 3755 3756 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 3757 if (mSeq != args.seq) { 3758 // The sequence has changed, so we need to update our value and make 3759 // sure to do a traversal afterward so the window manager is given our 3760 // most recent data. 3761 mSeq = args.seq; 3762 mAttachInfo.mForceReportNewAttributes = true; 3763 scheduleTraversals(); 3764 } 3765 if (mView == null) return; 3766 if (args.localChanges != 0) { 3767 if (mAttachInfo != null) { 3768 mAttachInfo.mRecomputeGlobalAttributes = true; 3769 } 3770 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 3771 scheduleTraversals(); 3772 } 3773 mView.dispatchSystemUiVisibilityChanged(args.globalVisibility); 3774 } 3775 3776 public void handleDispatchDoneAnimating() { 3777 if (mWindowsAnimating) { 3778 mWindowsAnimating = false; 3779 if (!mDirty.isEmpty() || mIsAnimating) { 3780 scheduleTraversals(); 3781 } 3782 } 3783 } 3784 3785 public void getLastTouchPoint(Point outLocation) { 3786 outLocation.x = (int) mLastTouchPoint.x; 3787 outLocation.y = (int) mLastTouchPoint.y; 3788 } 3789 3790 public void setDragFocus(View newDragTarget) { 3791 if (mCurrentDragView != newDragTarget) { 3792 mCurrentDragView = newDragTarget; 3793 } 3794 } 3795 3796 private AudioManager getAudioManager() { 3797 if (mView == null) { 3798 throw new IllegalStateException("getAudioManager called when there is no mView"); 3799 } 3800 if (mAudioManager == null) { 3801 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 3802 } 3803 return mAudioManager; 3804 } 3805 3806 public AccessibilityInteractionController getAccessibilityInteractionController() { 3807 if (mView == null) { 3808 throw new IllegalStateException("getAccessibilityInteractionController" 3809 + " called when there is no mView"); 3810 } 3811 if (mAccessibilityInteractionController == null) { 3812 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 3813 } 3814 return mAccessibilityInteractionController; 3815 } 3816 3817 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 3818 boolean insetsPending) throws RemoteException { 3819 3820 float appScale = mAttachInfo.mApplicationScale; 3821 boolean restore = false; 3822 if (params != null && mTranslator != null) { 3823 restore = true; 3824 params.backup(); 3825 mTranslator.translateWindowLayout(params); 3826 } 3827 if (params != null) { 3828 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 3829 } 3830 mPendingConfiguration.seq = 0; 3831 //Log.d(TAG, ">>>>>> CALLING relayout"); 3832 if (params != null && mOrigWindowType != params.type) { 3833 // For compatibility with old apps, don't crash here. 3834 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 3835 Slog.w(TAG, "Window type can not be changed after " 3836 + "the window is added; ignoring change of " + mView); 3837 params.type = mOrigWindowType; 3838 } 3839 } 3840 int relayoutResult = sWindowSession.relayout( 3841 mWindow, mSeq, params, 3842 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 3843 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 3844 viewVisibility, insetsPending ? WindowManagerImpl.RELAYOUT_INSETS_PENDING : 0, 3845 mWinFrame, mPendingSystemInsets, mPendingContentInsets, mPendingVisibleInsets, 3846 mPendingConfiguration, mSurface); 3847 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 3848 if (restore) { 3849 params.restore(); 3850 } 3851 3852 if (mTranslator != null) { 3853 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 3854 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 3855 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 3856 } 3857 return relayoutResult; 3858 } 3859 3860 /** 3861 * {@inheritDoc} 3862 */ 3863 public void playSoundEffect(int effectId) { 3864 checkThread(); 3865 3866 try { 3867 final AudioManager audioManager = getAudioManager(); 3868 3869 switch (effectId) { 3870 case SoundEffectConstants.CLICK: 3871 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 3872 return; 3873 case SoundEffectConstants.NAVIGATION_DOWN: 3874 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 3875 return; 3876 case SoundEffectConstants.NAVIGATION_LEFT: 3877 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 3878 return; 3879 case SoundEffectConstants.NAVIGATION_RIGHT: 3880 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 3881 return; 3882 case SoundEffectConstants.NAVIGATION_UP: 3883 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 3884 return; 3885 default: 3886 throw new IllegalArgumentException("unknown effect id " + effectId + 3887 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 3888 } 3889 } catch (IllegalStateException e) { 3890 // Exception thrown by getAudioManager() when mView is null 3891 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 3892 e.printStackTrace(); 3893 } 3894 } 3895 3896 /** 3897 * {@inheritDoc} 3898 */ 3899 public boolean performHapticFeedback(int effectId, boolean always) { 3900 try { 3901 return sWindowSession.performHapticFeedback(mWindow, effectId, always); 3902 } catch (RemoteException e) { 3903 return false; 3904 } 3905 } 3906 3907 /** 3908 * {@inheritDoc} 3909 */ 3910 public View focusSearch(View focused, int direction) { 3911 checkThread(); 3912 if (!(mView instanceof ViewGroup)) { 3913 return null; 3914 } 3915 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 3916 } 3917 3918 public void debug() { 3919 mView.debug(); 3920 } 3921 3922 public void dumpGfxInfo(int[] info) { 3923 if (mView != null) { 3924 getGfxInfo(mView, info); 3925 } else { 3926 info[0] = info[1] = 0; 3927 } 3928 } 3929 3930 private static void getGfxInfo(View view, int[] info) { 3931 DisplayList displayList = view.mDisplayList; 3932 info[0]++; 3933 if (displayList != null) { 3934 info[1] += displayList.getSize(); 3935 } 3936 3937 if (view instanceof ViewGroup) { 3938 ViewGroup group = (ViewGroup) view; 3939 3940 int count = group.getChildCount(); 3941 for (int i = 0; i < count; i++) { 3942 getGfxInfo(group.getChildAt(i), info); 3943 } 3944 } 3945 } 3946 3947 public void die(boolean immediate) { 3948 if (immediate) { 3949 doDie(); 3950 } else { 3951 destroyHardwareRenderer(); 3952 mHandler.sendEmptyMessage(MSG_DIE); 3953 } 3954 } 3955 3956 void doDie() { 3957 checkThread(); 3958 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 3959 synchronized (this) { 3960 if (mAdded) { 3961 dispatchDetachedFromWindow(); 3962 } 3963 3964 if (mAdded && !mFirst) { 3965 destroyHardwareRenderer(); 3966 3967 if (mView != null) { 3968 int viewVisibility = mView.getVisibility(); 3969 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 3970 if (mWindowAttributesChanged || viewVisibilityChanged) { 3971 // If layout params have been changed, first give them 3972 // to the window manager to make sure it has the correct 3973 // animation info. 3974 try { 3975 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 3976 & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 3977 sWindowSession.finishDrawing(mWindow); 3978 } 3979 } catch (RemoteException e) { 3980 } 3981 } 3982 3983 mSurface.release(); 3984 } 3985 } 3986 3987 mAdded = false; 3988 } 3989 } 3990 3991 public void requestUpdateConfiguration(Configuration config) { 3992 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 3993 mHandler.sendMessage(msg); 3994 } 3995 3996 private void destroyHardwareRenderer() { 3997 AttachInfo attachInfo = mAttachInfo; 3998 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 3999 4000 if (hardwareRenderer != null) { 4001 if (mView != null) { 4002 hardwareRenderer.destroyHardwareResources(mView); 4003 } 4004 hardwareRenderer.destroy(true); 4005 hardwareRenderer.setRequested(false); 4006 4007 attachInfo.mHardwareRenderer = null; 4008 attachInfo.mHardwareAccelerated = false; 4009 } 4010 } 4011 4012 void dispatchImeFinishedEvent(int seq, boolean handled) { 4013 Message msg = mHandler.obtainMessage(MSG_IME_FINISHED_EVENT); 4014 msg.arg1 = seq; 4015 msg.arg2 = handled ? 1 : 0; 4016 msg.setAsynchronous(true); 4017 mHandler.sendMessage(msg); 4018 } 4019 4020 public void dispatchFinishInputConnection(InputConnection connection) { 4021 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 4022 mHandler.sendMessage(msg); 4023 } 4024 4025 public void dispatchResized(int w, int h, Rect coveredInsets, 4026 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 4027 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": w=" + w 4028 + " h=" + h + " coveredInsets=" + coveredInsets.toShortString() 4029 + " visibleInsets=" + visibleInsets.toShortString() 4030 + " reportDraw=" + reportDraw); 4031 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT :MSG_RESIZED); 4032 if (mTranslator != null) { 4033 mTranslator.translateRectInScreenToAppWindow(coveredInsets); 4034 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 4035 w *= mTranslator.applicationInvertedScale; 4036 h *= mTranslator.applicationInvertedScale; 4037 } 4038 msg.arg1 = w; 4039 msg.arg2 = h; 4040 ResizedInfo ri = new ResizedInfo(); 4041 ri.coveredInsets = new Rect(coveredInsets); 4042 ri.visibleInsets = new Rect(visibleInsets); 4043 ri.newConfig = newConfig; 4044 msg.obj = ri; 4045 mHandler.sendMessage(msg); 4046 } 4047 4048 /** 4049 * Represents a pending input event that is waiting in a queue. 4050 * 4051 * Input events are processed in serial order by the timestamp specified by 4052 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 4053 * one input event to the application at a time and waits for the application 4054 * to finish handling it before delivering the next one. 4055 * 4056 * However, because the application or IME can synthesize and inject multiple 4057 * key events at a time without going through the input dispatcher, we end up 4058 * needing a queue on the application's side. 4059 */ 4060 private static final class QueuedInputEvent { 4061 public static final int FLAG_DELIVER_POST_IME = 1; 4062 4063 public QueuedInputEvent mNext; 4064 4065 public InputEvent mEvent; 4066 public InputEventReceiver mReceiver; 4067 public int mFlags; 4068 4069 // Used for latency calculations. 4070 public long mReceiveTimeNanos; 4071 public long mDeliverTimeNanos; 4072 public long mDeliverPostImeTimeNanos; 4073 } 4074 4075 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 4076 InputEventReceiver receiver, int flags) { 4077 QueuedInputEvent q = mQueuedInputEventPool; 4078 if (q != null) { 4079 mQueuedInputEventPoolSize -= 1; 4080 mQueuedInputEventPool = q.mNext; 4081 q.mNext = null; 4082 } else { 4083 q = new QueuedInputEvent(); 4084 } 4085 4086 q.mEvent = event; 4087 q.mReceiver = receiver; 4088 q.mFlags = flags; 4089 return q; 4090 } 4091 4092 private void recycleQueuedInputEvent(QueuedInputEvent q) { 4093 q.mEvent = null; 4094 q.mReceiver = null; 4095 4096 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 4097 mQueuedInputEventPoolSize += 1; 4098 q.mNext = mQueuedInputEventPool; 4099 mQueuedInputEventPool = q; 4100 } 4101 } 4102 4103 void enqueueInputEvent(InputEvent event) { 4104 enqueueInputEvent(event, null, 0, false); 4105 } 4106 4107 void enqueueInputEvent(InputEvent event, 4108 InputEventReceiver receiver, int flags, boolean processImmediately) { 4109 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 4110 4111 if (ViewDebug.DEBUG_LATENCY) { 4112 q.mReceiveTimeNanos = System.nanoTime(); 4113 q.mDeliverTimeNanos = 0; 4114 q.mDeliverPostImeTimeNanos = 0; 4115 } 4116 4117 // Always enqueue the input event in order, regardless of its time stamp. 4118 // We do this because the application or the IME may inject key events 4119 // in response to touch events and we want to ensure that the injected keys 4120 // are processed in the order they were received and we cannot trust that 4121 // the time stamp of injected events are monotonic. 4122 QueuedInputEvent last = mFirstPendingInputEvent; 4123 if (last == null) { 4124 mFirstPendingInputEvent = q; 4125 } else { 4126 while (last.mNext != null) { 4127 last = last.mNext; 4128 } 4129 last.mNext = q; 4130 } 4131 4132 if (processImmediately) { 4133 doProcessInputEvents(); 4134 } else { 4135 scheduleProcessInputEvents(); 4136 } 4137 } 4138 4139 private void scheduleProcessInputEvents() { 4140 if (!mProcessInputEventsScheduled) { 4141 mProcessInputEventsScheduled = true; 4142 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 4143 msg.setAsynchronous(true); 4144 mHandler.sendMessage(msg); 4145 } 4146 } 4147 4148 void doProcessInputEvents() { 4149 while (mCurrentInputEvent == null && mFirstPendingInputEvent != null) { 4150 QueuedInputEvent q = mFirstPendingInputEvent; 4151 mFirstPendingInputEvent = q.mNext; 4152 q.mNext = null; 4153 mCurrentInputEvent = q; 4154 deliverInputEvent(q); 4155 } 4156 4157 // We are done processing all input events that we can process right now 4158 // so we can clear the pending flag immediately. 4159 if (mProcessInputEventsScheduled) { 4160 mProcessInputEventsScheduled = false; 4161 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 4162 } 4163 } 4164 4165 private void finishInputEvent(QueuedInputEvent q, boolean handled) { 4166 if (q != mCurrentInputEvent) { 4167 throw new IllegalStateException("finished input event out of order"); 4168 } 4169 4170 if (ViewDebug.DEBUG_LATENCY) { 4171 final long now = System.nanoTime(); 4172 final long eventTime = q.mEvent.getEventTimeNano(); 4173 final StringBuilder msg = new StringBuilder(); 4174 msg.append("Spent "); 4175 msg.append((now - q.mReceiveTimeNanos) * 0.000001f); 4176 msg.append("ms processing "); 4177 if (q.mEvent instanceof KeyEvent) { 4178 final KeyEvent keyEvent = (KeyEvent)q.mEvent; 4179 msg.append("key event, action="); 4180 msg.append(KeyEvent.actionToString(keyEvent.getAction())); 4181 } else { 4182 final MotionEvent motionEvent = (MotionEvent)q.mEvent; 4183 msg.append("motion event, action="); 4184 msg.append(MotionEvent.actionToString(motionEvent.getAction())); 4185 msg.append(", historySize="); 4186 msg.append(motionEvent.getHistorySize()); 4187 } 4188 msg.append(", handled="); 4189 msg.append(handled); 4190 msg.append(", received at +"); 4191 msg.append((q.mReceiveTimeNanos - eventTime) * 0.000001f); 4192 if (q.mDeliverTimeNanos != 0) { 4193 msg.append("ms, delivered at +"); 4194 msg.append((q.mDeliverTimeNanos - eventTime) * 0.000001f); 4195 } 4196 if (q.mDeliverPostImeTimeNanos != 0) { 4197 msg.append("ms, delivered post IME at +"); 4198 msg.append((q.mDeliverPostImeTimeNanos - eventTime) * 0.000001f); 4199 } 4200 msg.append("ms, finished at +"); 4201 msg.append((now - eventTime) * 0.000001f); 4202 msg.append("ms."); 4203 Log.d(ViewDebug.DEBUG_LATENCY_TAG, msg.toString()); 4204 } 4205 4206 if (q.mReceiver != null) { 4207 q.mReceiver.finishInputEvent(q.mEvent, handled); 4208 } else { 4209 q.mEvent.recycleIfNeededAfterDispatch(); 4210 } 4211 4212 recycleQueuedInputEvent(q); 4213 4214 mCurrentInputEvent = null; 4215 if (mFirstPendingInputEvent != null) { 4216 scheduleProcessInputEvents(); 4217 } 4218 } 4219 4220 void scheduleConsumeBatchedInput() { 4221 if (!mConsumeBatchedInputScheduled) { 4222 mConsumeBatchedInputScheduled = true; 4223 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 4224 mConsumedBatchedInputRunnable, null); 4225 } 4226 } 4227 4228 void unscheduleConsumeBatchedInput() { 4229 if (mConsumeBatchedInputScheduled) { 4230 mConsumeBatchedInputScheduled = false; 4231 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 4232 mConsumedBatchedInputRunnable, null); 4233 } 4234 } 4235 4236 void doConsumeBatchedInput(long frameTimeNanos) { 4237 if (mConsumeBatchedInputScheduled) { 4238 mConsumeBatchedInputScheduled = false; 4239 if (mInputEventReceiver != null) { 4240 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 4241 } 4242 doProcessInputEvents(); 4243 } 4244 } 4245 4246 final class TraversalRunnable implements Runnable { 4247 @Override 4248 public void run() { 4249 doTraversal(); 4250 } 4251 } 4252 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 4253 4254 final class WindowInputEventReceiver extends InputEventReceiver { 4255 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 4256 super(inputChannel, looper); 4257 } 4258 4259 @Override 4260 public void onInputEvent(InputEvent event) { 4261 enqueueInputEvent(event, this, 0, true); 4262 } 4263 4264 @Override 4265 public void onBatchedInputEventPending() { 4266 scheduleConsumeBatchedInput(); 4267 } 4268 4269 @Override 4270 public void dispose() { 4271 unscheduleConsumeBatchedInput(); 4272 super.dispose(); 4273 } 4274 } 4275 WindowInputEventReceiver mInputEventReceiver; 4276 4277 final class ConsumeBatchedInputRunnable implements Runnable { 4278 @Override 4279 public void run() { 4280 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 4281 } 4282 } 4283 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 4284 new ConsumeBatchedInputRunnable(); 4285 boolean mConsumeBatchedInputScheduled; 4286 4287 final class InvalidateOnAnimationRunnable implements Runnable { 4288 private boolean mPosted; 4289 private ArrayList<View> mViews = new ArrayList<View>(); 4290 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 4291 new ArrayList<AttachInfo.InvalidateInfo>(); 4292 private View[] mTempViews; 4293 private AttachInfo.InvalidateInfo[] mTempViewRects; 4294 4295 public void addView(View view) { 4296 synchronized (this) { 4297 mViews.add(view); 4298 postIfNeededLocked(); 4299 } 4300 } 4301 4302 public void addViewRect(AttachInfo.InvalidateInfo info) { 4303 synchronized (this) { 4304 mViewRects.add(info); 4305 postIfNeededLocked(); 4306 } 4307 } 4308 4309 public void removeView(View view) { 4310 synchronized (this) { 4311 mViews.remove(view); 4312 4313 for (int i = mViewRects.size(); i-- > 0; ) { 4314 AttachInfo.InvalidateInfo info = mViewRects.get(i); 4315 if (info.target == view) { 4316 mViewRects.remove(i); 4317 info.release(); 4318 } 4319 } 4320 4321 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 4322 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 4323 mPosted = false; 4324 } 4325 } 4326 } 4327 4328 @Override 4329 public void run() { 4330 final int viewCount; 4331 final int viewRectCount; 4332 synchronized (this) { 4333 mPosted = false; 4334 4335 viewCount = mViews.size(); 4336 if (viewCount != 0) { 4337 mTempViews = mViews.toArray(mTempViews != null 4338 ? mTempViews : new View[viewCount]); 4339 mViews.clear(); 4340 } 4341 4342 viewRectCount = mViewRects.size(); 4343 if (viewRectCount != 0) { 4344 mTempViewRects = mViewRects.toArray(mTempViewRects != null 4345 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 4346 mViewRects.clear(); 4347 } 4348 } 4349 4350 for (int i = 0; i < viewCount; i++) { 4351 mTempViews[i].invalidate(); 4352 } 4353 4354 for (int i = 0; i < viewRectCount; i++) { 4355 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 4356 info.target.invalidate(info.left, info.top, info.right, info.bottom); 4357 info.release(); 4358 } 4359 } 4360 4361 private void postIfNeededLocked() { 4362 if (!mPosted) { 4363 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 4364 mPosted = true; 4365 } 4366 } 4367 } 4368 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 4369 new InvalidateOnAnimationRunnable(); 4370 4371 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 4372 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 4373 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4374 } 4375 4376 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 4377 long delayMilliseconds) { 4378 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 4379 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4380 } 4381 4382 public void dispatchInvalidateOnAnimation(View view) { 4383 mInvalidateOnAnimationRunnable.addView(view); 4384 } 4385 4386 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 4387 mInvalidateOnAnimationRunnable.addViewRect(info); 4388 } 4389 4390 public void invalidateDisplayList(DisplayList displayList) { 4391 mDisplayLists.add(displayList); 4392 4393 mHandler.removeMessages(MSG_INVALIDATE_DISPLAY_LIST); 4394 Message msg = mHandler.obtainMessage(MSG_INVALIDATE_DISPLAY_LIST); 4395 mHandler.sendMessage(msg); 4396 } 4397 4398 public void cancelInvalidate(View view) { 4399 mHandler.removeMessages(MSG_INVALIDATE, view); 4400 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 4401 // them to the pool 4402 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 4403 mInvalidateOnAnimationRunnable.removeView(view); 4404 } 4405 4406 public void dispatchKey(KeyEvent event) { 4407 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 4408 msg.setAsynchronous(true); 4409 mHandler.sendMessage(msg); 4410 } 4411 4412 public void dispatchKeyFromIme(KeyEvent event) { 4413 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 4414 msg.setAsynchronous(true); 4415 mHandler.sendMessage(msg); 4416 } 4417 4418 public void dispatchUnhandledKey(KeyEvent event) { 4419 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 4420 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 4421 final int keyCode = event.getKeyCode(); 4422 final int metaState = event.getMetaState(); 4423 4424 KeyEvent fallbackEvent = null; 4425 synchronized (mFallbackAction) { 4426 // Check for fallback actions specified by the key character map. 4427 if (kcm.getFallbackAction(keyCode, metaState, mFallbackAction)) { 4428 int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 4429 fallbackEvent = KeyEvent.obtain( 4430 event.getDownTime(), event.getEventTime(), 4431 event.getAction(), mFallbackAction.keyCode, 4432 event.getRepeatCount(), mFallbackAction.metaState, 4433 event.getDeviceId(), event.getScanCode(), 4434 flags, event.getSource(), null); 4435 } 4436 } 4437 if (fallbackEvent != null) { 4438 dispatchKey(fallbackEvent); 4439 } 4440 } 4441 } 4442 4443 public void dispatchAppVisibility(boolean visible) { 4444 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 4445 msg.arg1 = visible ? 1 : 0; 4446 mHandler.sendMessage(msg); 4447 } 4448 4449 public void dispatchScreenStateChange(boolean on) { 4450 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 4451 msg.arg1 = on ? 1 : 0; 4452 mHandler.sendMessage(msg); 4453 } 4454 4455 public void dispatchGetNewSurface() { 4456 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 4457 mHandler.sendMessage(msg); 4458 } 4459 4460 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4461 Message msg = Message.obtain(); 4462 msg.what = MSG_WINDOW_FOCUS_CHANGED; 4463 msg.arg1 = hasFocus ? 1 : 0; 4464 msg.arg2 = inTouchMode ? 1 : 0; 4465 mHandler.sendMessage(msg); 4466 } 4467 4468 public void dispatchCloseSystemDialogs(String reason) { 4469 Message msg = Message.obtain(); 4470 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 4471 msg.obj = reason; 4472 mHandler.sendMessage(msg); 4473 } 4474 4475 public void dispatchDragEvent(DragEvent event) { 4476 final int what; 4477 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 4478 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 4479 mHandler.removeMessages(what); 4480 } else { 4481 what = MSG_DISPATCH_DRAG_EVENT; 4482 } 4483 Message msg = mHandler.obtainMessage(what, event); 4484 mHandler.sendMessage(msg); 4485 } 4486 4487 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4488 int localValue, int localChanges) { 4489 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 4490 args.seq = seq; 4491 args.globalVisibility = globalVisibility; 4492 args.localValue = localValue; 4493 args.localChanges = localChanges; 4494 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 4495 } 4496 4497 public void dispatchDoneAnimating() { 4498 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 4499 } 4500 4501 public void dispatchCheckFocus() { 4502 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 4503 // This will result in a call to checkFocus() below. 4504 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 4505 } 4506 } 4507 4508 /** 4509 * Post a callback to send a 4510 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4511 * This event is send at most once every 4512 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 4513 */ 4514 private void postSendWindowContentChangedCallback(View source) { 4515 if (mSendWindowContentChangedAccessibilityEvent == null) { 4516 mSendWindowContentChangedAccessibilityEvent = 4517 new SendWindowContentChangedAccessibilityEvent(); 4518 } 4519 View oldSource = mSendWindowContentChangedAccessibilityEvent.mSource; 4520 if (oldSource == null) { 4521 mSendWindowContentChangedAccessibilityEvent.mSource = source; 4522 mHandler.postDelayed(mSendWindowContentChangedAccessibilityEvent, 4523 ViewConfiguration.getSendRecurringAccessibilityEventsInterval()); 4524 } else { 4525 mSendWindowContentChangedAccessibilityEvent.mSource = 4526 getCommonPredecessor(oldSource, source); 4527 } 4528 } 4529 4530 /** 4531 * Remove a posted callback to send a 4532 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4533 */ 4534 private void removeSendWindowContentChangedCallback() { 4535 if (mSendWindowContentChangedAccessibilityEvent != null) { 4536 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 4537 } 4538 } 4539 4540 public boolean showContextMenuForChild(View originalView) { 4541 return false; 4542 } 4543 4544 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 4545 return null; 4546 } 4547 4548 public void createContextMenu(ContextMenu menu) { 4549 } 4550 4551 public void childDrawableStateChanged(View child) { 4552 } 4553 4554 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 4555 if (mView == null) { 4556 return false; 4557 } 4558 mAccessibilityManager.sendAccessibilityEvent(event); 4559 return true; 4560 } 4561 4562 @Override 4563 public void childAccessibilityStateChanged(View child) { 4564 postSendWindowContentChangedCallback(child); 4565 } 4566 4567 private View getCommonPredecessor(View first, View second) { 4568 if (mAttachInfo != null) { 4569 if (mTempHashSet == null) { 4570 mTempHashSet = new HashSet<View>(); 4571 } 4572 HashSet<View> seen = mTempHashSet; 4573 seen.clear(); 4574 View firstCurrent = first; 4575 while (firstCurrent != null) { 4576 seen.add(firstCurrent); 4577 ViewParent firstCurrentParent = firstCurrent.mParent; 4578 if (firstCurrentParent instanceof View) { 4579 firstCurrent = (View) firstCurrentParent; 4580 } else { 4581 firstCurrent = null; 4582 } 4583 } 4584 View secondCurrent = second; 4585 while (secondCurrent != null) { 4586 if (seen.contains(secondCurrent)) { 4587 seen.clear(); 4588 return secondCurrent; 4589 } 4590 ViewParent secondCurrentParent = secondCurrent.mParent; 4591 if (secondCurrentParent instanceof View) { 4592 secondCurrent = (View) secondCurrentParent; 4593 } else { 4594 secondCurrent = null; 4595 } 4596 } 4597 seen.clear(); 4598 } 4599 return null; 4600 } 4601 4602 void checkThread() { 4603 if (mThread != Thread.currentThread()) { 4604 throw new CalledFromWrongThreadException( 4605 "Only the original thread that created a view hierarchy can touch its views."); 4606 } 4607 } 4608 4609 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 4610 // ViewAncestor never intercepts touch event, so this can be a no-op 4611 } 4612 4613 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, 4614 boolean immediate) { 4615 return scrollToRectOrFocus(rectangle, immediate); 4616 } 4617 4618 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 4619 // Do nothing. 4620 } 4621 4622 class TakenSurfaceHolder extends BaseSurfaceHolder { 4623 @Override 4624 public boolean onAllowLockCanvas() { 4625 return mDrawingAllowed; 4626 } 4627 4628 @Override 4629 public void onRelayoutContainer() { 4630 // Not currently interesting -- from changing between fixed and layout size. 4631 } 4632 4633 public void setFormat(int format) { 4634 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 4635 } 4636 4637 public void setType(int type) { 4638 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 4639 } 4640 4641 @Override 4642 public void onUpdateSurface() { 4643 // We take care of format and type changes on our own. 4644 throw new IllegalStateException("Shouldn't be here"); 4645 } 4646 4647 public boolean isCreating() { 4648 return mIsCreating; 4649 } 4650 4651 @Override 4652 public void setFixedSize(int width, int height) { 4653 throw new UnsupportedOperationException( 4654 "Currently only support sizing from layout"); 4655 } 4656 4657 public void setKeepScreenOn(boolean screenOn) { 4658 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 4659 } 4660 } 4661 4662 static class InputMethodCallback extends IInputMethodCallback.Stub { 4663 private WeakReference<ViewRootImpl> mViewAncestor; 4664 4665 public InputMethodCallback(ViewRootImpl viewAncestor) { 4666 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4667 } 4668 4669 public void finishedEvent(int seq, boolean handled) { 4670 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4671 if (viewAncestor != null) { 4672 viewAncestor.dispatchImeFinishedEvent(seq, handled); 4673 } 4674 } 4675 4676 public void sessionCreated(IInputMethodSession session) { 4677 // Stub -- not for use in the client. 4678 } 4679 } 4680 4681 static class W extends IWindow.Stub { 4682 private final WeakReference<ViewRootImpl> mViewAncestor; 4683 4684 W(ViewRootImpl viewAncestor) { 4685 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4686 } 4687 4688 public void resized(int w, int h, Rect systemInsets, Rect contentInsets, 4689 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 4690 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4691 if (viewAncestor != null) { 4692 viewAncestor.dispatchResized(w, h, contentInsets, visibleInsets, reportDraw, 4693 newConfig); 4694 } 4695 } 4696 4697 public void dispatchAppVisibility(boolean visible) { 4698 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4699 if (viewAncestor != null) { 4700 viewAncestor.dispatchAppVisibility(visible); 4701 } 4702 } 4703 4704 public void dispatchScreenState(boolean on) { 4705 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4706 if (viewAncestor != null) { 4707 viewAncestor.dispatchScreenStateChange(on); 4708 } 4709 } 4710 4711 public void dispatchGetNewSurface() { 4712 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4713 if (viewAncestor != null) { 4714 viewAncestor.dispatchGetNewSurface(); 4715 } 4716 } 4717 4718 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4719 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4720 if (viewAncestor != null) { 4721 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 4722 } 4723 } 4724 4725 private static int checkCallingPermission(String permission) { 4726 try { 4727 return ActivityManagerNative.getDefault().checkPermission( 4728 permission, Binder.getCallingPid(), Binder.getCallingUid()); 4729 } catch (RemoteException e) { 4730 return PackageManager.PERMISSION_DENIED; 4731 } 4732 } 4733 4734 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 4735 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4736 if (viewAncestor != null) { 4737 final View view = viewAncestor.mView; 4738 if (view != null) { 4739 if (checkCallingPermission(Manifest.permission.DUMP) != 4740 PackageManager.PERMISSION_GRANTED) { 4741 throw new SecurityException("Insufficient permissions to invoke" 4742 + " executeCommand() from pid=" + Binder.getCallingPid() 4743 + ", uid=" + Binder.getCallingUid()); 4744 } 4745 4746 OutputStream clientStream = null; 4747 try { 4748 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 4749 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 4750 } catch (IOException e) { 4751 e.printStackTrace(); 4752 } finally { 4753 if (clientStream != null) { 4754 try { 4755 clientStream.close(); 4756 } catch (IOException e) { 4757 e.printStackTrace(); 4758 } 4759 } 4760 } 4761 } 4762 } 4763 } 4764 4765 public void closeSystemDialogs(String reason) { 4766 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4767 if (viewAncestor != null) { 4768 viewAncestor.dispatchCloseSystemDialogs(reason); 4769 } 4770 } 4771 4772 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 4773 boolean sync) { 4774 if (sync) { 4775 try { 4776 sWindowSession.wallpaperOffsetsComplete(asBinder()); 4777 } catch (RemoteException e) { 4778 } 4779 } 4780 } 4781 4782 public void dispatchWallpaperCommand(String action, int x, int y, 4783 int z, Bundle extras, boolean sync) { 4784 if (sync) { 4785 try { 4786 sWindowSession.wallpaperCommandComplete(asBinder(), null); 4787 } catch (RemoteException e) { 4788 } 4789 } 4790 } 4791 4792 /* Drag/drop */ 4793 public void dispatchDragEvent(DragEvent event) { 4794 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4795 if (viewAncestor != null) { 4796 viewAncestor.dispatchDragEvent(event); 4797 } 4798 } 4799 4800 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4801 int localValue, int localChanges) { 4802 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4803 if (viewAncestor != null) { 4804 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 4805 localValue, localChanges); 4806 } 4807 } 4808 4809 public void doneAnimating() { 4810 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4811 if (viewAncestor != null) { 4812 viewAncestor.dispatchDoneAnimating(); 4813 } 4814 } 4815 } 4816 4817 /** 4818 * Maintains state information for a single trackball axis, generating 4819 * discrete (DPAD) movements based on raw trackball motion. 4820 */ 4821 static final class TrackballAxis { 4822 /** 4823 * The maximum amount of acceleration we will apply. 4824 */ 4825 static final float MAX_ACCELERATION = 20; 4826 4827 /** 4828 * The maximum amount of time (in milliseconds) between events in order 4829 * for us to consider the user to be doing fast trackball movements, 4830 * and thus apply an acceleration. 4831 */ 4832 static final long FAST_MOVE_TIME = 150; 4833 4834 /** 4835 * Scaling factor to the time (in milliseconds) between events to how 4836 * much to multiple/divide the current acceleration. When movement 4837 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4838 * FAST_MOVE_TIME it divides it. 4839 */ 4840 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4841 4842 float position; 4843 float absPosition; 4844 float acceleration = 1; 4845 long lastMoveTime = 0; 4846 int step; 4847 int dir; 4848 int nonAccelMovement; 4849 4850 void reset(int _step) { 4851 position = 0; 4852 acceleration = 1; 4853 lastMoveTime = 0; 4854 step = _step; 4855 dir = 0; 4856 } 4857 4858 /** 4859 * Add trackball movement into the state. If the direction of movement 4860 * has been reversed, the state is reset before adding the 4861 * movement (so that you don't have to compensate for any previously 4862 * collected movement before see the result of the movement in the 4863 * new direction). 4864 * 4865 * @return Returns the absolute value of the amount of movement 4866 * collected so far. 4867 */ 4868 float collect(float off, long time, String axis) { 4869 long normTime; 4870 if (off > 0) { 4871 normTime = (long)(off * FAST_MOVE_TIME); 4872 if (dir < 0) { 4873 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4874 position = 0; 4875 step = 0; 4876 acceleration = 1; 4877 lastMoveTime = 0; 4878 } 4879 dir = 1; 4880 } else if (off < 0) { 4881 normTime = (long)((-off) * FAST_MOVE_TIME); 4882 if (dir > 0) { 4883 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4884 position = 0; 4885 step = 0; 4886 acceleration = 1; 4887 lastMoveTime = 0; 4888 } 4889 dir = -1; 4890 } else { 4891 normTime = 0; 4892 } 4893 4894 // The number of milliseconds between each movement that is 4895 // considered "normal" and will not result in any acceleration 4896 // or deceleration, scaled by the offset we have here. 4897 if (normTime > 0) { 4898 long delta = time - lastMoveTime; 4899 lastMoveTime = time; 4900 float acc = acceleration; 4901 if (delta < normTime) { 4902 // The user is scrolling rapidly, so increase acceleration. 4903 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4904 if (scale > 1) acc *= scale; 4905 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4906 + off + " normTime=" + normTime + " delta=" + delta 4907 + " scale=" + scale + " acc=" + acc); 4908 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4909 } else { 4910 // The user is scrolling slowly, so decrease acceleration. 4911 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4912 if (scale > 1) acc /= scale; 4913 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4914 + off + " normTime=" + normTime + " delta=" + delta 4915 + " scale=" + scale + " acc=" + acc); 4916 acceleration = acc > 1 ? acc : 1; 4917 } 4918 } 4919 position += off; 4920 return (absPosition = Math.abs(position)); 4921 } 4922 4923 /** 4924 * Generate the number of discrete movement events appropriate for 4925 * the currently collected trackball movement. 4926 * 4927 * @param precision The minimum movement required to generate the 4928 * first discrete movement. 4929 * 4930 * @return Returns the number of discrete movements, either positive 4931 * or negative, or 0 if there is not enough trackball movement yet 4932 * for a discrete movement. 4933 */ 4934 int generate(float precision) { 4935 int movement = 0; 4936 nonAccelMovement = 0; 4937 do { 4938 final int dir = position >= 0 ? 1 : -1; 4939 switch (step) { 4940 // If we are going to execute the first step, then we want 4941 // to do this as soon as possible instead of waiting for 4942 // a full movement, in order to make things look responsive. 4943 case 0: 4944 if (absPosition < precision) { 4945 return movement; 4946 } 4947 movement += dir; 4948 nonAccelMovement += dir; 4949 step = 1; 4950 break; 4951 // If we have generated the first movement, then we need 4952 // to wait for the second complete trackball motion before 4953 // generating the second discrete movement. 4954 case 1: 4955 if (absPosition < 2) { 4956 return movement; 4957 } 4958 movement += dir; 4959 nonAccelMovement += dir; 4960 position += dir > 0 ? -2 : 2; 4961 absPosition = Math.abs(position); 4962 step = 2; 4963 break; 4964 // After the first two, we generate discrete movements 4965 // consistently with the trackball, applying an acceleration 4966 // if the trackball is moving quickly. This is a simple 4967 // acceleration on top of what we already compute based 4968 // on how quickly the wheel is being turned, to apply 4969 // a longer increasing acceleration to continuous movement 4970 // in one direction. 4971 default: 4972 if (absPosition < 1) { 4973 return movement; 4974 } 4975 movement += dir; 4976 position += dir >= 0 ? -1 : 1; 4977 absPosition = Math.abs(position); 4978 float acc = acceleration; 4979 acc *= 1.1f; 4980 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4981 break; 4982 } 4983 } while (true); 4984 } 4985 } 4986 4987 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 4988 public CalledFromWrongThreadException(String msg) { 4989 super(msg); 4990 } 4991 } 4992 4993 private SurfaceHolder mHolder = new SurfaceHolder() { 4994 // we only need a SurfaceHolder for opengl. it would be nice 4995 // to implement everything else though, especially the callback 4996 // support (opengl doesn't make use of it right now, but eventually 4997 // will). 4998 public Surface getSurface() { 4999 return mSurface; 5000 } 5001 5002 public boolean isCreating() { 5003 return false; 5004 } 5005 5006 public void addCallback(Callback callback) { 5007 } 5008 5009 public void removeCallback(Callback callback) { 5010 } 5011 5012 public void setFixedSize(int width, int height) { 5013 } 5014 5015 public void setSizeFromLayout() { 5016 } 5017 5018 public void setFormat(int format) { 5019 } 5020 5021 public void setType(int type) { 5022 } 5023 5024 public void setKeepScreenOn(boolean screenOn) { 5025 } 5026 5027 public Canvas lockCanvas() { 5028 return null; 5029 } 5030 5031 public Canvas lockCanvas(Rect dirty) { 5032 return null; 5033 } 5034 5035 public void unlockCanvasAndPost(Canvas canvas) { 5036 } 5037 public Rect getSurfaceFrame() { 5038 return null; 5039 } 5040 }; 5041 5042 static RunQueue getRunQueue() { 5043 RunQueue rq = sRunQueues.get(); 5044 if (rq != null) { 5045 return rq; 5046 } 5047 rq = new RunQueue(); 5048 sRunQueues.set(rq); 5049 return rq; 5050 } 5051 5052 /** 5053 * The run queue is used to enqueue pending work from Views when no Handler is 5054 * attached. The work is executed during the next call to performTraversals on 5055 * the thread. 5056 * @hide 5057 */ 5058 static final class RunQueue { 5059 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 5060 5061 void post(Runnable action) { 5062 postDelayed(action, 0); 5063 } 5064 5065 void postDelayed(Runnable action, long delayMillis) { 5066 HandlerAction handlerAction = new HandlerAction(); 5067 handlerAction.action = action; 5068 handlerAction.delay = delayMillis; 5069 5070 synchronized (mActions) { 5071 mActions.add(handlerAction); 5072 } 5073 } 5074 5075 void removeCallbacks(Runnable action) { 5076 final HandlerAction handlerAction = new HandlerAction(); 5077 handlerAction.action = action; 5078 5079 synchronized (mActions) { 5080 final ArrayList<HandlerAction> actions = mActions; 5081 5082 while (actions.remove(handlerAction)) { 5083 // Keep going 5084 } 5085 } 5086 } 5087 5088 void executeActions(Handler handler) { 5089 synchronized (mActions) { 5090 final ArrayList<HandlerAction> actions = mActions; 5091 final int count = actions.size(); 5092 5093 for (int i = 0; i < count; i++) { 5094 final HandlerAction handlerAction = actions.get(i); 5095 handler.postDelayed(handlerAction.action, handlerAction.delay); 5096 } 5097 5098 actions.clear(); 5099 } 5100 } 5101 5102 private static class HandlerAction { 5103 Runnable action; 5104 long delay; 5105 5106 @Override 5107 public boolean equals(Object o) { 5108 if (this == o) return true; 5109 if (o == null || getClass() != o.getClass()) return false; 5110 5111 HandlerAction that = (HandlerAction) o; 5112 return !(action != null ? !action.equals(that.action) : that.action != null); 5113 5114 } 5115 5116 @Override 5117 public int hashCode() { 5118 int result = action != null ? action.hashCode() : 0; 5119 result = 31 * result + (int) (delay ^ (delay >>> 32)); 5120 return result; 5121 } 5122 } 5123 } 5124 5125 /** 5126 * Class for managing the accessibility interaction connection 5127 * based on the global accessibility state. 5128 */ 5129 final class AccessibilityInteractionConnectionManager 5130 implements AccessibilityStateChangeListener { 5131 public void onAccessibilityStateChanged(boolean enabled) { 5132 if (enabled) { 5133 ensureConnection(); 5134 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 5135 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 5136 View focusedView = mView.findFocus(); 5137 if (focusedView != null && focusedView != mView) { 5138 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 5139 } 5140 } 5141 } else { 5142 ensureNoConnection(); 5143 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 5144 } 5145 } 5146 5147 public void ensureConnection() { 5148 if (mAttachInfo != null) { 5149 final boolean registered = 5150 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 5151 if (!registered) { 5152 mAttachInfo.mAccessibilityWindowId = 5153 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 5154 new AccessibilityInteractionConnection(ViewRootImpl.this)); 5155 } 5156 } 5157 } 5158 5159 public void ensureNoConnection() { 5160 final boolean registered = 5161 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 5162 if (registered) { 5163 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 5164 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 5165 } 5166 } 5167 } 5168 5169 /** 5170 * This class is an interface this ViewAncestor provides to the 5171 * AccessibilityManagerService to the latter can interact with 5172 * the view hierarchy in this ViewAncestor. 5173 */ 5174 static final class AccessibilityInteractionConnection 5175 extends IAccessibilityInteractionConnection.Stub { 5176 private final WeakReference<ViewRootImpl> mViewRootImpl; 5177 5178 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 5179 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 5180 } 5181 5182 @Override 5183 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 5184 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5185 int flags, int interrogatingPid, long interrogatingTid) { 5186 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5187 if (viewRootImpl != null && viewRootImpl.mView != null) { 5188 viewRootImpl.getAccessibilityInteractionController() 5189 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 5190 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5191 } else { 5192 // We cannot make the call and notify the caller so it does not wait. 5193 try { 5194 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 5195 } catch (RemoteException re) { 5196 /* best effort - ignore */ 5197 } 5198 } 5199 } 5200 5201 @Override 5202 public void performAccessibilityAction(long accessibilityNodeId, int action, 5203 Bundle arguments, int interactionId, 5204 IAccessibilityInteractionConnectionCallback callback, int flags, 5205 int interogatingPid, long interrogatingTid) { 5206 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5207 if (viewRootImpl != null && viewRootImpl.mView != null) { 5208 viewRootImpl.getAccessibilityInteractionController() 5209 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 5210 interactionId, callback, flags, interogatingPid, interrogatingTid); 5211 } else { 5212 // We cannot make the call and notify the caller so it does not wait. 5213 try { 5214 callback.setPerformAccessibilityActionResult(false, interactionId); 5215 } catch (RemoteException re) { 5216 /* best effort - ignore */ 5217 } 5218 } 5219 } 5220 5221 @Override 5222 public void findAccessibilityNodeInfoByViewId(long accessibilityNodeId, int viewId, 5223 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5224 int flags, int interrogatingPid, long interrogatingTid) { 5225 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5226 if (viewRootImpl != null && viewRootImpl.mView != null) { 5227 viewRootImpl.getAccessibilityInteractionController() 5228 .findAccessibilityNodeInfoByViewIdClientThread(accessibilityNodeId, viewId, 5229 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5230 } else { 5231 // We cannot make the call and notify the caller so it does not wait. 5232 try { 5233 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5234 } catch (RemoteException re) { 5235 /* best effort - ignore */ 5236 } 5237 } 5238 } 5239 5240 @Override 5241 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 5242 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5243 int flags, int interrogatingPid, long interrogatingTid) { 5244 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5245 if (viewRootImpl != null && viewRootImpl.mView != null) { 5246 viewRootImpl.getAccessibilityInteractionController() 5247 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 5248 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5249 } else { 5250 // We cannot make the call and notify the caller so it does not wait. 5251 try { 5252 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 5253 } catch (RemoteException re) { 5254 /* best effort - ignore */ 5255 } 5256 } 5257 } 5258 5259 @Override 5260 public void findFocus(long accessibilityNodeId, int interactionId, int focusType, 5261 IAccessibilityInteractionConnectionCallback callback, int flags, 5262 int interrogatingPid, long interrogatingTid) { 5263 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5264 if (viewRootImpl != null && viewRootImpl.mView != null) { 5265 viewRootImpl.getAccessibilityInteractionController() 5266 .findFocusClientThread(accessibilityNodeId, interactionId, focusType, 5267 callback, flags, interrogatingPid, interrogatingTid); 5268 } else { 5269 // We cannot make the call and notify the caller so it does not wait. 5270 try { 5271 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5272 } catch (RemoteException re) { 5273 /* best effort - ignore */ 5274 } 5275 } 5276 } 5277 5278 @Override 5279 public void focusSearch(long accessibilityNodeId, int interactionId, int direction, 5280 IAccessibilityInteractionConnectionCallback callback, int flags, 5281 int interrogatingPid, long interrogatingTid) { 5282 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5283 if (viewRootImpl != null && viewRootImpl.mView != null) { 5284 viewRootImpl.getAccessibilityInteractionController() 5285 .focusSearchClientThread(accessibilityNodeId, interactionId, direction, 5286 callback, flags, interrogatingPid, interrogatingTid); 5287 } else { 5288 // We cannot make the call and notify the caller so it does not wait. 5289 try { 5290 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5291 } catch (RemoteException re) { 5292 /* best effort - ignore */ 5293 } 5294 } 5295 } 5296 } 5297 5298 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 5299 public View mSource; 5300 5301 public void run() { 5302 if (mSource != null) { 5303 mSource.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 5304 mSource.resetAccessibilityStateChanged(); 5305 mSource = null; 5306 } 5307 } 5308 } 5309} 5310