ViewRootImpl.java revision cf8a3b82241a320f568f8448184df6da5bbcf152
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 ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 265 = new ViewTreeObserver.InternalInsetsInfo(); 266 267 final Rect mFitSystemWindowsInsets = new Rect(); 268 269 final Configuration mLastConfiguration = new Configuration(); 270 final Configuration mPendingConfiguration = new Configuration(); 271 272 class ResizedInfo { 273 Rect coveredInsets; 274 Rect visibleInsets; 275 Configuration newConfig; 276 } 277 278 boolean mScrollMayChange; 279 int mSoftInputMode; 280 View mLastScrolledFocus; 281 int mScrollY; 282 int mCurScrollY; 283 Scroller mScroller; 284 HardwareLayer mResizeBuffer; 285 long mResizeBufferStartTime; 286 int mResizeBufferDuration; 287 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 288 private ArrayList<LayoutTransition> mPendingTransitions; 289 290 final ViewConfiguration mViewConfiguration; 291 292 /* Drag/drop */ 293 ClipDescription mDragDescription; 294 View mCurrentDragView; 295 volatile Object mLocalDragState; 296 final PointF mDragPoint = new PointF(); 297 final PointF mLastTouchPoint = new PointF(); 298 299 private boolean mProfileRendering; 300 private Thread mRenderProfiler; 301 private volatile boolean mRenderProfilingEnabled; 302 303 // Variables to track frames per second, enabled via DEBUG_FPS flag 304 private long mFpsStartTime = -1; 305 private long mFpsPrevTime = -1; 306 private int mFpsNumFrames; 307 308 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(24); 309 310 /** 311 * see {@link #playSoundEffect(int)} 312 */ 313 AudioManager mAudioManager; 314 315 final AccessibilityManager mAccessibilityManager; 316 317 AccessibilityInteractionController mAccessibilityInteractionController; 318 319 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 320 321 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 322 323 HashSet<View> mTempHashSet; 324 325 private final int mDensity; 326 327 final KeyCharacterMap.FallbackAction mFallbackAction = new KeyCharacterMap.FallbackAction(); 328 329 /** 330 * Consistency verifier for debugging purposes. 331 */ 332 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 333 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 334 new InputEventConsistencyVerifier(this, 0) : null; 335 336 public static IWindowSession getWindowSession(Looper mainLooper) { 337 synchronized (mStaticInit) { 338 if (!mInitialized) { 339 try { 340 InputMethodManager imm = InputMethodManager.getInstance(mainLooper); 341 IWindowManager windowManager = Display.getWindowManager(); 342 sWindowSession = windowManager.openSession( 343 imm.getClient(), imm.getInputContext()); 344 float animatorScale = windowManager.getAnimationScale(2); 345 ValueAnimator.setDurationScale(animatorScale); 346 mInitialized = true; 347 } catch (RemoteException e) { 348 } 349 } 350 return sWindowSession; 351 } 352 } 353 354 static final class SystemUiVisibilityInfo { 355 int seq; 356 int globalVisibility; 357 int localValue; 358 int localChanges; 359 } 360 361 public ViewRootImpl(Context context) { 362 super(); 363 364 if (MEASURE_LATENCY) { 365 if (lt == null) { 366 lt = new LatencyTimer(100, 1000); 367 } 368 } 369 370 // Initialize the statics when this class is first instantiated. This is 371 // done here instead of in the static block because Zygote does not 372 // allow the spawning of threads. 373 getWindowSession(context.getMainLooper()); 374 375 mThread = Thread.currentThread(); 376 mLocation = new WindowLeaked(null); 377 mLocation.fillInStackTrace(); 378 mWidth = -1; 379 mHeight = -1; 380 mDirty = new Rect(); 381 mTempRect = new Rect(); 382 mVisRect = new Rect(); 383 mWinFrame = new Rect(); 384 mWindow = new W(this); 385 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 386 mInputMethodCallback = new InputMethodCallback(this); 387 mViewVisibility = View.GONE; 388 mTransparentRegion = new Region(); 389 mPreviousTransparentRegion = new Region(); 390 mFirst = true; // true for the first time the view is added 391 mAdded = false; 392 mAccessibilityManager = AccessibilityManager.getInstance(context); 393 mAccessibilityInteractionConnectionManager = 394 new AccessibilityInteractionConnectionManager(); 395 mAccessibilityManager.addAccessibilityStateChangeListener( 396 mAccessibilityInteractionConnectionManager); 397 mAttachInfo = new View.AttachInfo(sWindowSession, mWindow, this, mHandler, this); 398 mViewConfiguration = ViewConfiguration.get(context); 399 mDensity = context.getResources().getDisplayMetrics().densityDpi; 400 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 401 mProfileRendering = Boolean.parseBoolean( 402 SystemProperties.get(PROPERTY_PROFILE_RENDERING, "false")); 403 mChoreographer = Choreographer.getInstance(); 404 405 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 406 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 407 } 408 409 /** 410 * @return True if the application requests the use of a separate render thread, 411 * false otherwise 412 */ 413 private static boolean isRenderThreadRequested(Context context) { 414 if (USE_RENDER_THREAD) { 415 synchronized (sRenderThreadQueryLock) { 416 if (!sRenderThreadQueried) { 417 final PackageManager packageManager = context.getPackageManager(); 418 final String packageName = context.getApplicationInfo().packageName; 419 try { 420 ApplicationInfo applicationInfo = packageManager.getApplicationInfo(packageName, 421 PackageManager.GET_META_DATA); 422 if (applicationInfo.metaData != null) { 423 sUseRenderThread = applicationInfo.metaData.getBoolean( 424 "android.graphics.renderThread", false); 425 } 426 } catch (PackageManager.NameNotFoundException e) { 427 } finally { 428 sRenderThreadQueried = true; 429 } 430 } 431 return sUseRenderThread; 432 } 433 } else { 434 return false; 435 } 436 } 437 438 public static void addFirstDrawHandler(Runnable callback) { 439 synchronized (sFirstDrawHandlers) { 440 if (!sFirstDrawComplete) { 441 sFirstDrawHandlers.add(callback); 442 } 443 } 444 } 445 446 public static void addConfigCallback(ComponentCallbacks callback) { 447 synchronized (sConfigCallbacks) { 448 sConfigCallbacks.add(callback); 449 } 450 } 451 452 // FIXME for perf testing only 453 private boolean mProfile = false; 454 455 /** 456 * Call this to profile the next traversal call. 457 * FIXME for perf testing only. Remove eventually 458 */ 459 public void profile() { 460 mProfile = true; 461 } 462 463 /** 464 * Indicates whether we are in touch mode. Calling this method triggers an IPC 465 * call and should be avoided whenever possible. 466 * 467 * @return True, if the device is in touch mode, false otherwise. 468 * 469 * @hide 470 */ 471 static boolean isInTouchMode() { 472 if (mInitialized) { 473 try { 474 return sWindowSession.getInTouchMode(); 475 } catch (RemoteException e) { 476 } 477 } 478 return false; 479 } 480 481 /** 482 * We have one child 483 */ 484 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 485 synchronized (this) { 486 if (mView == null) { 487 mView = view; 488 mFallbackEventHandler.setView(view); 489 mWindowAttributes.copyFrom(attrs); 490 attrs = mWindowAttributes; 491 492 if (view instanceof RootViewSurfaceTaker) { 493 mSurfaceHolderCallback = 494 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 495 if (mSurfaceHolderCallback != null) { 496 mSurfaceHolder = new TakenSurfaceHolder(); 497 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 498 } 499 } 500 501 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 502 mTranslator = compatibilityInfo.getTranslator(); 503 504 // If the application owns the surface, don't enable hardware acceleration 505 if (mSurfaceHolder == null) { 506 enableHardwareAcceleration(mView.getContext(), attrs); 507 } 508 509 boolean restore = false; 510 if (mTranslator != null) { 511 mSurface.setCompatibilityTranslator(mTranslator); 512 restore = true; 513 attrs.backup(); 514 mTranslator.translateWindowLayout(attrs); 515 } 516 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 517 518 if (!compatibilityInfo.supportsScreen()) { 519 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 520 mLastInCompatMode = true; 521 } 522 523 mSoftInputMode = attrs.softInputMode; 524 mWindowAttributesChanged = true; 525 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 526 mAttachInfo.mRootView = view; 527 mAttachInfo.mScalingRequired = mTranslator != null; 528 mAttachInfo.mApplicationScale = 529 mTranslator == null ? 1.0f : mTranslator.applicationScale; 530 if (panelParentView != null) { 531 mAttachInfo.mPanelParentWindowToken 532 = panelParentView.getApplicationWindowToken(); 533 } 534 mAdded = true; 535 int res; /* = WindowManagerImpl.ADD_OKAY; */ 536 537 // Schedule the first layout -before- adding to the window 538 // manager, to make sure we do the relayout before receiving 539 // any other events from the system. 540 requestLayout(); 541 if ((mWindowAttributes.inputFeatures 542 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 543 mInputChannel = new InputChannel(); 544 } 545 try { 546 mOrigWindowType = mWindowAttributes.type; 547 mAttachInfo.mRecomputeGlobalAttributes = true; 548 collectViewAttributes(); 549 res = sWindowSession.add(mWindow, mSeq, mWindowAttributes, 550 getHostVisibility(), mAttachInfo.mContentInsets, 551 mInputChannel); 552 } catch (RemoteException e) { 553 mAdded = false; 554 mView = null; 555 mAttachInfo.mRootView = null; 556 mInputChannel = null; 557 mFallbackEventHandler.setView(null); 558 unscheduleTraversals(); 559 throw new RuntimeException("Adding window failed", e); 560 } finally { 561 if (restore) { 562 attrs.restore(); 563 } 564 } 565 566 if (mTranslator != null) { 567 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 568 } 569 mPendingContentInsets.set(mAttachInfo.mContentInsets); 570 mPendingVisibleInsets.set(0, 0, 0, 0); 571 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 572 if (res < WindowManagerImpl.ADD_OKAY) { 573 mView = null; 574 mAttachInfo.mRootView = null; 575 mAdded = false; 576 mFallbackEventHandler.setView(null); 577 unscheduleTraversals(); 578 switch (res) { 579 case WindowManagerImpl.ADD_BAD_APP_TOKEN: 580 case WindowManagerImpl.ADD_BAD_SUBWINDOW_TOKEN: 581 throw new WindowManagerImpl.BadTokenException( 582 "Unable to add window -- token " + attrs.token 583 + " is not valid; is your activity running?"); 584 case WindowManagerImpl.ADD_NOT_APP_TOKEN: 585 throw new WindowManagerImpl.BadTokenException( 586 "Unable to add window -- token " + attrs.token 587 + " is not for an application"); 588 case WindowManagerImpl.ADD_APP_EXITING: 589 throw new WindowManagerImpl.BadTokenException( 590 "Unable to add window -- app for token " + attrs.token 591 + " is exiting"); 592 case WindowManagerImpl.ADD_DUPLICATE_ADD: 593 throw new WindowManagerImpl.BadTokenException( 594 "Unable to add window -- window " + mWindow 595 + " has already been added"); 596 case WindowManagerImpl.ADD_STARTING_NOT_NEEDED: 597 // Silently ignore -- we would have just removed it 598 // right away, anyway. 599 return; 600 case WindowManagerImpl.ADD_MULTIPLE_SINGLETON: 601 throw new WindowManagerImpl.BadTokenException( 602 "Unable to add window " + mWindow + 603 " -- another window of this type already exists"); 604 case WindowManagerImpl.ADD_PERMISSION_DENIED: 605 throw new WindowManagerImpl.BadTokenException( 606 "Unable to add window " + mWindow + 607 " -- permission denied for this window type"); 608 } 609 throw new RuntimeException( 610 "Unable to add window -- unknown error code " + res); 611 } 612 613 if (view instanceof RootViewSurfaceTaker) { 614 mInputQueueCallback = 615 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 616 } 617 if (mInputChannel != null) { 618 if (mInputQueueCallback != null) { 619 mInputQueue = new InputQueue(mInputChannel); 620 mInputQueueCallback.onInputQueueCreated(mInputQueue); 621 } else { 622 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 623 Looper.myLooper()); 624 } 625 } 626 627 view.assignParent(this); 628 mAddedTouchMode = (res&WindowManagerImpl.ADD_FLAG_IN_TOUCH_MODE) != 0; 629 mAppVisible = (res&WindowManagerImpl.ADD_FLAG_APP_VISIBLE) != 0; 630 631 if (mAccessibilityManager.isEnabled()) { 632 mAccessibilityInteractionConnectionManager.ensureConnection(); 633 } 634 635 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 636 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 637 } 638 } 639 } 640 } 641 642 void destroyHardwareResources() { 643 if (mAttachInfo.mHardwareRenderer != null) { 644 if (mAttachInfo.mHardwareRenderer.isEnabled()) { 645 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 646 } 647 mAttachInfo.mHardwareRenderer.destroy(false); 648 } 649 } 650 651 void terminateHardwareResources() { 652 if (mAttachInfo.mHardwareRenderer != null) { 653 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 654 mAttachInfo.mHardwareRenderer.destroy(false); 655 } 656 } 657 658 void destroyHardwareLayers() { 659 if (mThread != Thread.currentThread()) { 660 if (mAttachInfo.mHardwareRenderer != null && 661 mAttachInfo.mHardwareRenderer.isEnabled()) { 662 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 663 } 664 } else { 665 if (mAttachInfo.mHardwareRenderer != null && 666 mAttachInfo.mHardwareRenderer.isEnabled()) { 667 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 668 } 669 } 670 } 671 672 public void attachFunctor(int functor) { 673 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 674 mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 675 } 676 } 677 678 public void detachFunctor(int functor) { 679 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 680 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 681 } 682 } 683 684 private void enableHardwareAcceleration(Context context, WindowManager.LayoutParams attrs) { 685 mAttachInfo.mHardwareAccelerated = false; 686 mAttachInfo.mHardwareAccelerationRequested = false; 687 688 // Don't enable hardware acceleration when the application is in compatibility mode 689 if (mTranslator != null) return; 690 691 // Try to enable hardware acceleration if requested 692 final boolean hardwareAccelerated = 693 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 694 695 if (hardwareAccelerated) { 696 if (!HardwareRenderer.isAvailable()) { 697 return; 698 } 699 700 // Persistent processes (including the system) should not do 701 // accelerated rendering on low-end devices. In that case, 702 // sRendererDisabled will be set. In addition, the system process 703 // itself should never do accelerated rendering. In that case, both 704 // sRendererDisabled and sSystemRendererDisabled are set. When 705 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 706 // can be used by code on the system process to escape that and enable 707 // HW accelerated drawing. (This is basically for the lock screen.) 708 709 final boolean fakeHwAccelerated = (attrs.privateFlags & 710 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 711 final boolean forceHwAccelerated = (attrs.privateFlags & 712 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 713 714 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 715 && forceHwAccelerated)) { 716 // Don't enable hardware acceleration when we're not on the main thread 717 if (!HardwareRenderer.sSystemRendererDisabled && 718 Looper.getMainLooper() != Looper.myLooper()) { 719 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 720 + "acceleration outside of the main thread, aborting"); 721 return; 722 } 723 724 final boolean renderThread = isRenderThreadRequested(context); 725 if (renderThread) { 726 Log.i(HardwareRenderer.LOG_TAG, "Render threat initiated"); 727 } 728 729 if (mAttachInfo.mHardwareRenderer != null) { 730 mAttachInfo.mHardwareRenderer.destroy(true); 731 } 732 733 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 734 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 735 mAttachInfo.mHardwareAccelerated = mAttachInfo.mHardwareAccelerationRequested 736 = mAttachInfo.mHardwareRenderer != null; 737 738 } else if (fakeHwAccelerated) { 739 // The window had wanted to use hardware acceleration, but this 740 // is not allowed in its process. By setting this flag, it can 741 // still render as if it was accelerated. This is basically for 742 // the preview windows the window manager shows for launching 743 // applications, so they will look more like the app being launched. 744 mAttachInfo.mHardwareAccelerationRequested = true; 745 } 746 } 747 } 748 749 public View getView() { 750 return mView; 751 } 752 753 final WindowLeaked getLocation() { 754 return mLocation; 755 } 756 757 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 758 synchronized (this) { 759 int oldSoftInputMode = mWindowAttributes.softInputMode; 760 // preserve compatible window flag if exists. 761 int compatibleWindowFlag = 762 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 763 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 764 mWindowAttributes.flags |= compatibleWindowFlag; 765 766 if (newView) { 767 mSoftInputMode = attrs.softInputMode; 768 requestLayout(); 769 } 770 // Don't lose the mode we last auto-computed. 771 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 772 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 773 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 774 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 775 | (oldSoftInputMode 776 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 777 } 778 mWindowAttributesChanged = true; 779 scheduleTraversals(); 780 } 781 } 782 783 void handleAppVisibility(boolean visible) { 784 if (mAppVisible != visible) { 785 mAppVisible = visible; 786 scheduleTraversals(); 787 } 788 } 789 790 void handleGetNewSurface() { 791 mNewSurfaceNeeded = true; 792 mFullRedrawNeeded = true; 793 scheduleTraversals(); 794 } 795 796 void handleScreenStateChange(boolean on) { 797 if (on != mAttachInfo.mScreenOn) { 798 mAttachInfo.mScreenOn = on; 799 if (mView != null) { 800 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 801 } 802 if (on) { 803 mFullRedrawNeeded = true; 804 scheduleTraversals(); 805 } 806 } 807 } 808 809 /** 810 * {@inheritDoc} 811 */ 812 public void requestFitSystemWindows() { 813 checkThread(); 814 mFitSystemWindowsRequested = true; 815 scheduleTraversals(); 816 } 817 818 /** 819 * {@inheritDoc} 820 */ 821 public void requestLayout() { 822 checkThread(); 823 mLayoutRequested = true; 824 scheduleTraversals(); 825 } 826 827 /** 828 * {@inheritDoc} 829 */ 830 public boolean isLayoutRequested() { 831 return mLayoutRequested; 832 } 833 834 void invalidate() { 835 mDirty.set(0, 0, mWidth, mHeight); 836 scheduleTraversals(); 837 } 838 839 public void invalidateChild(View child, Rect dirty) { 840 invalidateChildInParent(null, dirty); 841 } 842 843 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 844 checkThread(); 845 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 846 847 if (dirty == null) { 848 invalidate(); 849 return null; 850 } 851 852 if (mCurScrollY != 0 || mTranslator != null) { 853 mTempRect.set(dirty); 854 dirty = mTempRect; 855 if (mCurScrollY != 0) { 856 dirty.offset(0, -mCurScrollY); 857 } 858 if (mTranslator != null) { 859 mTranslator.translateRectInAppWindowToScreen(dirty); 860 } 861 if (mAttachInfo.mScalingRequired) { 862 dirty.inset(-1, -1); 863 } 864 } 865 866 final Rect localDirty = mDirty; 867 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 868 mAttachInfo.mSetIgnoreDirtyState = true; 869 mAttachInfo.mIgnoreDirtyState = true; 870 } 871 872 // Add the new dirty rect to the current one 873 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 874 // Intersect with the bounds of the window to skip 875 // updates that lie outside of the visible region 876 final float appScale = mAttachInfo.mApplicationScale; 877 localDirty.intersect(0, 0, 878 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 879 880 if (!mWillDrawSoon) { 881 scheduleTraversals(); 882 } 883 884 return null; 885 } 886 887 void setStopped(boolean stopped) { 888 if (mStopped != stopped) { 889 mStopped = stopped; 890 if (!stopped) { 891 scheduleTraversals(); 892 } 893 } 894 } 895 896 public ViewParent getParent() { 897 return null; 898 } 899 900 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 901 if (child != mView) { 902 throw new RuntimeException("child is not mine, honest!"); 903 } 904 // Note: don't apply scroll offset, because we want to know its 905 // visibility in the virtual canvas being given to the view hierarchy. 906 return r.intersect(0, 0, mWidth, mHeight); 907 } 908 909 public void bringChildToFront(View child) { 910 } 911 912 int getHostVisibility() { 913 return mAppVisible ? mView.getVisibility() : View.GONE; 914 } 915 916 void disposeResizeBuffer() { 917 if (mResizeBuffer != null) { 918 mResizeBuffer.destroy(); 919 mResizeBuffer = null; 920 } 921 } 922 923 /** 924 * Add LayoutTransition to the list of transitions to be started in the next traversal. 925 * This list will be cleared after the transitions on the list are start()'ed. These 926 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 927 * happens during the layout phase of traversal, which we want to complete before any of the 928 * animations are started (because those animations may side-effect properties that layout 929 * depends upon, like the bounding rectangles of the affected views). So we add the transition 930 * to the list and it is started just prior to starting the drawing phase of traversal. 931 * 932 * @param transition The LayoutTransition to be started on the next traversal. 933 * 934 * @hide 935 */ 936 public void requestTransitionStart(LayoutTransition transition) { 937 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 938 if (mPendingTransitions == null) { 939 mPendingTransitions = new ArrayList<LayoutTransition>(); 940 } 941 mPendingTransitions.add(transition); 942 } 943 } 944 945 void scheduleTraversals() { 946 if (!mTraversalScheduled) { 947 mTraversalScheduled = true; 948 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 949 mChoreographer.postCallback( 950 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 951 scheduleConsumeBatchedInput(); 952 } 953 } 954 955 void unscheduleTraversals() { 956 if (mTraversalScheduled) { 957 mTraversalScheduled = false; 958 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 959 mChoreographer.removeCallbacks( 960 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 961 } 962 } 963 964 void doTraversal() { 965 if (mTraversalScheduled) { 966 mTraversalScheduled = false; 967 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 968 969 if (mProfile) { 970 Debug.startMethodTracing("ViewAncestor"); 971 } 972 973 final long traversalStartTime; 974 if (ViewDebug.DEBUG_LATENCY) { 975 traversalStartTime = System.nanoTime(); 976 if (mLastTraversalFinishedTimeNanos != 0) { 977 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting performTraversals(); it has been " 978 + ((traversalStartTime - mLastTraversalFinishedTimeNanos) * 0.000001f) 979 + "ms since the last traversals finished."); 980 } else { 981 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting performTraversals()."); 982 } 983 } 984 985 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 986 try { 987 performTraversals(); 988 } finally { 989 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 990 } 991 992 if (ViewDebug.DEBUG_LATENCY) { 993 long now = System.nanoTime(); 994 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "performTraversals() took " 995 + ((now - traversalStartTime) * 0.000001f) 996 + "ms."); 997 mLastTraversalFinishedTimeNanos = now; 998 } 999 1000 if (mProfile) { 1001 Debug.stopMethodTracing(); 1002 mProfile = false; 1003 } 1004 } 1005 } 1006 1007 private boolean collectViewAttributes() { 1008 final View.AttachInfo attachInfo = mAttachInfo; 1009 if (attachInfo.mRecomputeGlobalAttributes) { 1010 //Log.i(TAG, "Computing view hierarchy attributes!"); 1011 attachInfo.mRecomputeGlobalAttributes = false; 1012 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1013 int oldVis = attachInfo.mSystemUiVisibility; 1014 boolean oldHasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1015 attachInfo.mKeepScreenOn = false; 1016 attachInfo.mSystemUiVisibility = 0; 1017 attachInfo.mHasSystemUiListeners = false; 1018 mView.dispatchCollectViewAttributes(attachInfo, 0); 1019 if (attachInfo.mKeepScreenOn != oldScreenOn 1020 || attachInfo.mSystemUiVisibility != oldVis 1021 || attachInfo.mHasSystemUiListeners != oldHasSystemUiListeners) { 1022 WindowManager.LayoutParams params = mWindowAttributes; 1023 if (attachInfo.mKeepScreenOn) { 1024 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1025 } 1026 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1027 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1028 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1029 return true; 1030 } 1031 } 1032 return false; 1033 } 1034 1035 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1036 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1037 int childWidthMeasureSpec; 1038 int childHeightMeasureSpec; 1039 boolean windowSizeMayChange = false; 1040 1041 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1042 "Measuring " + host + " in display " + desiredWindowWidth 1043 + "x" + desiredWindowHeight + "..."); 1044 1045 boolean goodMeasure = false; 1046 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1047 // On large screens, we don't want to allow dialogs to just 1048 // stretch to fill the entire width of the screen to display 1049 // one line of text. First try doing the layout at a smaller 1050 // size to see if it will fit. 1051 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1052 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1053 int baseSize = 0; 1054 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1055 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1056 } 1057 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1058 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1059 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1060 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1061 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1062 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1063 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1064 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1065 goodMeasure = true; 1066 } else { 1067 // Didn't fit in that size... try expanding a bit. 1068 baseSize = (baseSize+desiredWindowWidth)/2; 1069 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1070 + baseSize); 1071 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1072 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1073 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1074 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1075 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1076 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1077 goodMeasure = true; 1078 } 1079 } 1080 } 1081 } 1082 1083 if (!goodMeasure) { 1084 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1085 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1086 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1087 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1088 windowSizeMayChange = true; 1089 } 1090 } 1091 1092 if (DBG) { 1093 System.out.println("======================================"); 1094 System.out.println("performTraversals -- after measure"); 1095 host.debug(); 1096 } 1097 1098 return windowSizeMayChange; 1099 } 1100 1101 private void performTraversals() { 1102 // cache mView since it is used so much below... 1103 final View host = mView; 1104 1105 if (DBG) { 1106 System.out.println("======================================"); 1107 System.out.println("performTraversals"); 1108 host.debug(); 1109 } 1110 1111 if (host == null || !mAdded) 1112 return; 1113 1114 mWillDrawSoon = true; 1115 boolean windowSizeMayChange = false; 1116 boolean newSurface = false; 1117 boolean surfaceChanged = false; 1118 WindowManager.LayoutParams lp = mWindowAttributes; 1119 1120 int desiredWindowWidth; 1121 int desiredWindowHeight; 1122 1123 final View.AttachInfo attachInfo = mAttachInfo; 1124 1125 final int viewVisibility = getHostVisibility(); 1126 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1127 || mNewSurfaceNeeded; 1128 1129 WindowManager.LayoutParams params = null; 1130 if (mWindowAttributesChanged) { 1131 mWindowAttributesChanged = false; 1132 surfaceChanged = true; 1133 params = lp; 1134 } 1135 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 1136 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1137 params = lp; 1138 mFullRedrawNeeded = true; 1139 mLayoutRequested = true; 1140 if (mLastInCompatMode) { 1141 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1142 mLastInCompatMode = false; 1143 } else { 1144 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1145 mLastInCompatMode = true; 1146 } 1147 } 1148 1149 mWindowAttributesChangesFlag = 0; 1150 1151 Rect frame = mWinFrame; 1152 if (mFirst) { 1153 mFullRedrawNeeded = true; 1154 mLayoutRequested = true; 1155 1156 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1157 // NOTE -- system code, won't try to do compat mode. 1158 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1159 Point size = new Point(); 1160 disp.getRealSize(size); 1161 desiredWindowWidth = size.x; 1162 desiredWindowHeight = size.y; 1163 } else { 1164 DisplayMetrics packageMetrics = 1165 mView.getContext().getResources().getDisplayMetrics(); 1166 desiredWindowWidth = packageMetrics.widthPixels; 1167 desiredWindowHeight = packageMetrics.heightPixels; 1168 } 1169 1170 // For the very first time, tell the view hierarchy that it 1171 // is attached to the window. Note that at this point the surface 1172 // object is not initialized to its backing store, but soon it 1173 // will be (assuming the window is visible). 1174 attachInfo.mSurface = mSurface; 1175 // We used to use the following condition to choose 32 bits drawing caches: 1176 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1177 // However, windows are now always 32 bits by default, so choose 32 bits 1178 attachInfo.mUse32BitDrawingCache = true; 1179 attachInfo.mHasWindowFocus = false; 1180 attachInfo.mWindowVisibility = viewVisibility; 1181 attachInfo.mRecomputeGlobalAttributes = false; 1182 viewVisibilityChanged = false; 1183 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1184 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1185 host.dispatchAttachedToWindow(attachInfo, 0); 1186 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1187 host.fitSystemWindows(mFitSystemWindowsInsets); 1188 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1189 1190 } else { 1191 desiredWindowWidth = frame.width(); 1192 desiredWindowHeight = frame.height(); 1193 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1194 if (DEBUG_ORIENTATION) Log.v(TAG, 1195 "View " + host + " resized to: " + frame); 1196 mFullRedrawNeeded = true; 1197 mLayoutRequested = true; 1198 windowSizeMayChange = true; 1199 } 1200 } 1201 1202 if (viewVisibilityChanged) { 1203 attachInfo.mWindowVisibility = viewVisibility; 1204 host.dispatchWindowVisibilityChanged(viewVisibility); 1205 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1206 destroyHardwareResources(); 1207 } 1208 if (viewVisibility == View.GONE) { 1209 // After making a window gone, we will count it as being 1210 // shown for the first time the next time it gets focus. 1211 mHasHadWindowFocus = false; 1212 } 1213 } 1214 1215 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1216 getRunQueue().executeActions(attachInfo.mHandler); 1217 1218 boolean insetsChanged = false; 1219 1220 boolean layoutRequested = mLayoutRequested && !mStopped; 1221 if (layoutRequested) { 1222 1223 final Resources res = mView.getContext().getResources(); 1224 1225 if (mFirst) { 1226 // make sure touch mode code executes by setting cached value 1227 // to opposite of the added touch mode. 1228 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1229 ensureTouchModeLocally(mAddedTouchMode); 1230 } else { 1231 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1232 insetsChanged = true; 1233 } 1234 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1235 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1236 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1237 + mAttachInfo.mVisibleInsets); 1238 } 1239 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1240 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1241 windowSizeMayChange = true; 1242 1243 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1244 // NOTE -- system code, won't try to do compat mode. 1245 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1246 Point size = new Point(); 1247 disp.getRealSize(size); 1248 desiredWindowWidth = size.x; 1249 desiredWindowHeight = size.y; 1250 } else { 1251 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1252 desiredWindowWidth = packageMetrics.widthPixels; 1253 desiredWindowHeight = packageMetrics.heightPixels; 1254 } 1255 } 1256 } 1257 1258 // Ask host how big it wants to be 1259 windowSizeMayChange |= measureHierarchy(host, lp, res, 1260 desiredWindowWidth, desiredWindowHeight); 1261 } 1262 1263 if (collectViewAttributes()) { 1264 params = lp; 1265 } 1266 if (attachInfo.mForceReportNewAttributes) { 1267 attachInfo.mForceReportNewAttributes = false; 1268 params = lp; 1269 } 1270 1271 if (mFirst || attachInfo.mViewVisibilityChanged) { 1272 attachInfo.mViewVisibilityChanged = false; 1273 int resizeMode = mSoftInputMode & 1274 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1275 // If we are in auto resize mode, then we need to determine 1276 // what mode to use now. 1277 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1278 final int N = attachInfo.mScrollContainers.size(); 1279 for (int i=0; i<N; i++) { 1280 if (attachInfo.mScrollContainers.get(i).isShown()) { 1281 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1282 } 1283 } 1284 if (resizeMode == 0) { 1285 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1286 } 1287 if ((lp.softInputMode & 1288 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1289 lp.softInputMode = (lp.softInputMode & 1290 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1291 resizeMode; 1292 params = lp; 1293 } 1294 } 1295 } 1296 1297 if (params != null && (host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1298 if (!PixelFormat.formatHasAlpha(params.format)) { 1299 params.format = PixelFormat.TRANSLUCENT; 1300 } 1301 } 1302 1303 if (mFitSystemWindowsRequested) { 1304 mFitSystemWindowsRequested = false; 1305 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1306 host.fitSystemWindows(mFitSystemWindowsInsets); 1307 if (mLayoutRequested) { 1308 // Short-circuit catching a new layout request here, so 1309 // we don't need to go through two layout passes when things 1310 // change due to fitting system windows, which can happen a lot. 1311 windowSizeMayChange |= measureHierarchy(host, lp, 1312 mView.getContext().getResources(), 1313 desiredWindowWidth, desiredWindowHeight); 1314 } 1315 } 1316 1317 if (layoutRequested) { 1318 // Clear this now, so that if anything requests a layout in the 1319 // rest of this function we will catch it and re-run a full 1320 // layout pass. 1321 mLayoutRequested = false; 1322 } 1323 1324 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1325 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1326 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1327 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1328 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1329 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1330 1331 final boolean computesInternalInsets = 1332 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1333 1334 boolean insetsPending = false; 1335 int relayoutResult = 0; 1336 1337 if (mFirst || windowShouldResize || insetsChanged || 1338 viewVisibilityChanged || params != null) { 1339 1340 if (viewVisibility == View.VISIBLE) { 1341 // If this window is giving internal insets to the window 1342 // manager, and it is being added or changing its visibility, 1343 // then we want to first give the window manager "fake" 1344 // insets to cause it to effectively ignore the content of 1345 // the window during layout. This avoids it briefly causing 1346 // other windows to resize/move based on the raw frame of the 1347 // window, waiting until we can finish laying out this window 1348 // and get back to the window manager with the ultimately 1349 // computed insets. 1350 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1351 } 1352 1353 if (mSurfaceHolder != null) { 1354 mSurfaceHolder.mSurfaceLock.lock(); 1355 mDrawingAllowed = true; 1356 } 1357 1358 boolean hwInitialized = false; 1359 boolean contentInsetsChanged = false; 1360 boolean visibleInsetsChanged; 1361 boolean hadSurface = mSurface.isValid(); 1362 1363 try { 1364 if (DEBUG_LAYOUT) { 1365 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1366 host.getMeasuredHeight() + ", params=" + params); 1367 } 1368 1369 final int surfaceGenerationId = mSurface.getGenerationId(); 1370 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1371 1372 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1373 + " content=" + mPendingContentInsets.toShortString() 1374 + " visible=" + mPendingVisibleInsets.toShortString() 1375 + " surface=" + mSurface); 1376 1377 if (mPendingConfiguration.seq != 0) { 1378 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1379 + mPendingConfiguration); 1380 updateConfiguration(mPendingConfiguration, !mFirst); 1381 mPendingConfiguration.seq = 0; 1382 } 1383 1384 contentInsetsChanged = !mPendingContentInsets.equals( 1385 mAttachInfo.mContentInsets); 1386 visibleInsetsChanged = !mPendingVisibleInsets.equals( 1387 mAttachInfo.mVisibleInsets); 1388 if (contentInsetsChanged) { 1389 if (mWidth > 0 && mHeight > 0 && lp != null && 1390 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1391 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1392 mSurface != null && mSurface.isValid() && 1393 !mAttachInfo.mTurnOffWindowResizeAnim && 1394 mAttachInfo.mHardwareRenderer != null && 1395 mAttachInfo.mHardwareRenderer.isEnabled() && 1396 mAttachInfo.mHardwareRenderer.validate() && 1397 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1398 1399 disposeResizeBuffer(); 1400 1401 boolean completed = false; 1402 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1403 HardwareCanvas layerCanvas = null; 1404 try { 1405 if (mResizeBuffer == null) { 1406 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1407 mWidth, mHeight, false); 1408 } else if (mResizeBuffer.getWidth() != mWidth || 1409 mResizeBuffer.getHeight() != mHeight) { 1410 mResizeBuffer.resize(mWidth, mHeight); 1411 } 1412 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1413 layerCanvas.setViewport(mWidth, mHeight); 1414 layerCanvas.onPreDraw(null); 1415 final int restoreCount = layerCanvas.save(); 1416 1417 layerCanvas.drawColor(0xff000000, PorterDuff.Mode.SRC); 1418 1419 int yoff; 1420 final boolean scrolling = mScroller != null 1421 && mScroller.computeScrollOffset(); 1422 if (scrolling) { 1423 yoff = mScroller.getCurrY(); 1424 mScroller.abortAnimation(); 1425 } else { 1426 yoff = mScrollY; 1427 } 1428 1429 layerCanvas.translate(0, -yoff); 1430 if (mTranslator != null) { 1431 mTranslator.translateCanvas(layerCanvas); 1432 } 1433 1434 mView.draw(layerCanvas); 1435 1436 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1437 1438 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1439 mResizeBufferDuration = mView.getResources().getInteger( 1440 com.android.internal.R.integer.config_mediumAnimTime); 1441 completed = true; 1442 1443 layerCanvas.restoreToCount(restoreCount); 1444 } catch (OutOfMemoryError e) { 1445 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1446 } finally { 1447 if (layerCanvas != null) { 1448 layerCanvas.onPostDraw(); 1449 } 1450 if (mResizeBuffer != null) { 1451 mResizeBuffer.end(hwRendererCanvas); 1452 if (!completed) { 1453 mResizeBuffer.destroy(); 1454 mResizeBuffer = null; 1455 } 1456 } 1457 } 1458 } 1459 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1460 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1461 + mAttachInfo.mContentInsets); 1462 } 1463 if (contentInsetsChanged || mLastSystemUiVisibility != 1464 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested) { 1465 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1466 mFitSystemWindowsRequested = false; 1467 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1468 host.fitSystemWindows(mFitSystemWindowsInsets); 1469 } 1470 if (visibleInsetsChanged) { 1471 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1472 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1473 + mAttachInfo.mVisibleInsets); 1474 } 1475 1476 if (!hadSurface) { 1477 if (mSurface.isValid()) { 1478 // If we are creating a new surface, then we need to 1479 // completely redraw it. Also, when we get to the 1480 // point of drawing it we will hold off and schedule 1481 // a new traversal instead. This is so we can tell the 1482 // window manager about all of the windows being displayed 1483 // before actually drawing them, so it can display then 1484 // all at once. 1485 newSurface = true; 1486 mFullRedrawNeeded = true; 1487 mPreviousTransparentRegion.setEmpty(); 1488 1489 if (mAttachInfo.mHardwareRenderer != null) { 1490 try { 1491 hwInitialized = mAttachInfo.mHardwareRenderer.initialize(mHolder); 1492 } catch (Surface.OutOfResourcesException e) { 1493 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1494 try { 1495 if (!sWindowSession.outOfMemory(mWindow)) { 1496 Slog.w(TAG, "No processes killed for memory; killing self"); 1497 Process.killProcess(Process.myPid()); 1498 } 1499 } catch (RemoteException ex) { 1500 } 1501 mLayoutRequested = true; // ask wm for a new surface next time. 1502 return; 1503 } 1504 } 1505 } 1506 } else if (!mSurface.isValid()) { 1507 // If the surface has been removed, then reset the scroll 1508 // positions. 1509 mLastScrolledFocus = null; 1510 mScrollY = mCurScrollY = 0; 1511 if (mScroller != null) { 1512 mScroller.abortAnimation(); 1513 } 1514 disposeResizeBuffer(); 1515 // Our surface is gone 1516 if (mAttachInfo.mHardwareRenderer != null && 1517 mAttachInfo.mHardwareRenderer.isEnabled()) { 1518 mAttachInfo.mHardwareRenderer.destroy(true); 1519 } 1520 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1521 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1522 mFullRedrawNeeded = true; 1523 try { 1524 mAttachInfo.mHardwareRenderer.updateSurface(mHolder); 1525 } catch (Surface.OutOfResourcesException e) { 1526 Log.e(TAG, "OutOfResourcesException updating HW surface", e); 1527 try { 1528 if (!sWindowSession.outOfMemory(mWindow)) { 1529 Slog.w(TAG, "No processes killed for memory; killing self"); 1530 Process.killProcess(Process.myPid()); 1531 } 1532 } catch (RemoteException ex) { 1533 } 1534 mLayoutRequested = true; // ask wm for a new surface next time. 1535 return; 1536 } 1537 } 1538 } catch (RemoteException e) { 1539 } 1540 1541 if (DEBUG_ORIENTATION) Log.v( 1542 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1543 1544 attachInfo.mWindowLeft = frame.left; 1545 attachInfo.mWindowTop = frame.top; 1546 1547 // !!FIXME!! This next section handles the case where we did not get the 1548 // window size we asked for. We should avoid this by getting a maximum size from 1549 // the window session beforehand. 1550 mWidth = frame.width(); 1551 mHeight = frame.height(); 1552 1553 if (mSurfaceHolder != null) { 1554 // The app owns the surface; tell it about what is going on. 1555 if (mSurface.isValid()) { 1556 // XXX .copyFrom() doesn't work! 1557 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1558 mSurfaceHolder.mSurface = mSurface; 1559 } 1560 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1561 mSurfaceHolder.mSurfaceLock.unlock(); 1562 if (mSurface.isValid()) { 1563 if (!hadSurface) { 1564 mSurfaceHolder.ungetCallbacks(); 1565 1566 mIsCreating = true; 1567 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1568 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1569 if (callbacks != null) { 1570 for (SurfaceHolder.Callback c : callbacks) { 1571 c.surfaceCreated(mSurfaceHolder); 1572 } 1573 } 1574 surfaceChanged = true; 1575 } 1576 if (surfaceChanged) { 1577 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1578 lp.format, mWidth, mHeight); 1579 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1580 if (callbacks != null) { 1581 for (SurfaceHolder.Callback c : callbacks) { 1582 c.surfaceChanged(mSurfaceHolder, lp.format, 1583 mWidth, mHeight); 1584 } 1585 } 1586 } 1587 mIsCreating = false; 1588 } else if (hadSurface) { 1589 mSurfaceHolder.ungetCallbacks(); 1590 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1591 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1592 if (callbacks != null) { 1593 for (SurfaceHolder.Callback c : callbacks) { 1594 c.surfaceDestroyed(mSurfaceHolder); 1595 } 1596 } 1597 mSurfaceHolder.mSurfaceLock.lock(); 1598 try { 1599 mSurfaceHolder.mSurface = new Surface(); 1600 } finally { 1601 mSurfaceHolder.mSurfaceLock.unlock(); 1602 } 1603 } 1604 } 1605 1606 if (mAttachInfo.mHardwareRenderer != null && 1607 mAttachInfo.mHardwareRenderer.isEnabled()) { 1608 if (hwInitialized || windowShouldResize || 1609 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1610 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1611 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1612 if (!hwInitialized) { 1613 mAttachInfo.mHardwareRenderer.invalidate(mHolder); 1614 } 1615 } 1616 } 1617 1618 if (!mStopped) { 1619 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1620 (relayoutResult&WindowManagerImpl.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1621 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1622 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1623 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1624 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1625 1626 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1627 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1628 + " mHeight=" + mHeight 1629 + " measuredHeight=" + host.getMeasuredHeight() 1630 + " coveredInsetsChanged=" + contentInsetsChanged); 1631 1632 // Ask host how big it wants to be 1633 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1634 1635 // Implementation of weights from WindowManager.LayoutParams 1636 // We just grow the dimensions as needed and re-measure if 1637 // needs be 1638 int width = host.getMeasuredWidth(); 1639 int height = host.getMeasuredHeight(); 1640 boolean measureAgain = false; 1641 1642 if (lp.horizontalWeight > 0.0f) { 1643 width += (int) ((mWidth - width) * lp.horizontalWeight); 1644 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1645 MeasureSpec.EXACTLY); 1646 measureAgain = true; 1647 } 1648 if (lp.verticalWeight > 0.0f) { 1649 height += (int) ((mHeight - height) * lp.verticalWeight); 1650 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1651 MeasureSpec.EXACTLY); 1652 measureAgain = true; 1653 } 1654 1655 if (measureAgain) { 1656 if (DEBUG_LAYOUT) Log.v(TAG, 1657 "And hey let's measure once more: width=" + width 1658 + " height=" + height); 1659 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1660 } 1661 1662 layoutRequested = true; 1663 } 1664 } 1665 } 1666 1667 final boolean didLayout = layoutRequested && !mStopped; 1668 boolean triggerGlobalLayoutListener = didLayout 1669 || attachInfo.mRecomputeGlobalAttributes; 1670 if (didLayout) { 1671 mLayoutRequested = false; 1672 mScrollMayChange = true; 1673 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v( 1674 TAG, "Laying out " + host + " to (" + 1675 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1676 long startTime = 0L; 1677 if (ViewDebug.DEBUG_PROFILE_LAYOUT) { 1678 startTime = SystemClock.elapsedRealtime(); 1679 } 1680 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1681 1682 if (false && ViewDebug.consistencyCheckEnabled) { 1683 if (!host.dispatchConsistencyCheck(ViewDebug.CONSISTENCY_LAYOUT)) { 1684 throw new IllegalStateException("The view hierarchy is an inconsistent state," 1685 + "please refer to the logs with the tag " 1686 + ViewDebug.CONSISTENCY_LOG_TAG + " for more infomation."); 1687 } 1688 } 1689 1690 if (ViewDebug.DEBUG_PROFILE_LAYOUT) { 1691 EventLog.writeEvent(60001, SystemClock.elapsedRealtime() - startTime); 1692 } 1693 1694 // By this point all views have been sized and positionned 1695 // We can compute the transparent area 1696 1697 if ((host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1698 // start out transparent 1699 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1700 host.getLocationInWindow(mTmpLocation); 1701 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1702 mTmpLocation[0] + host.mRight - host.mLeft, 1703 mTmpLocation[1] + host.mBottom - host.mTop); 1704 1705 host.gatherTransparentRegion(mTransparentRegion); 1706 if (mTranslator != null) { 1707 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1708 } 1709 1710 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1711 mPreviousTransparentRegion.set(mTransparentRegion); 1712 // reconfigure window manager 1713 try { 1714 sWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1715 } catch (RemoteException e) { 1716 } 1717 } 1718 } 1719 1720 if (DBG) { 1721 System.out.println("======================================"); 1722 System.out.println("performTraversals -- after setFrame"); 1723 host.debug(); 1724 } 1725 } 1726 1727 if (triggerGlobalLayoutListener) { 1728 attachInfo.mRecomputeGlobalAttributes = false; 1729 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1730 1731 if (AccessibilityManager.getInstance(host.mContext).isEnabled()) { 1732 postSendWindowContentChangedCallback(mView); 1733 } 1734 } 1735 1736 if (computesInternalInsets) { 1737 // Clear the original insets. 1738 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1739 insets.reset(); 1740 1741 // Compute new insets in place. 1742 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1743 1744 // Tell the window manager. 1745 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1746 mLastGivenInsets.set(insets); 1747 1748 // Translate insets to screen coordinates if needed. 1749 final Rect contentInsets; 1750 final Rect visibleInsets; 1751 final Region touchableRegion; 1752 if (mTranslator != null) { 1753 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1754 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1755 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1756 } else { 1757 contentInsets = insets.contentInsets; 1758 visibleInsets = insets.visibleInsets; 1759 touchableRegion = insets.touchableRegion; 1760 } 1761 1762 try { 1763 sWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1764 contentInsets, visibleInsets, touchableRegion); 1765 } catch (RemoteException e) { 1766 } 1767 } 1768 } 1769 1770 boolean skipDraw = false; 1771 1772 if (mFirst) { 1773 // handle first focus request 1774 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1775 + mView.hasFocus()); 1776 if (mView != null) { 1777 if (!mView.hasFocus()) { 1778 mView.requestFocus(View.FOCUS_FORWARD); 1779 mFocusedView = mRealFocusedView = mView.findFocus(); 1780 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1781 + mFocusedView); 1782 } else { 1783 mRealFocusedView = mView.findFocus(); 1784 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1785 + mRealFocusedView); 1786 } 1787 } 1788 if ((relayoutResult&WindowManagerImpl.RELAYOUT_RES_ANIMATING) != 0) { 1789 // The first time we relayout the window, if the system is 1790 // doing window animations, we want to hold of on any future 1791 // draws until the animation is done. 1792 mWindowsAnimating = true; 1793 } 1794 } else if (mWindowsAnimating) { 1795 skipDraw = true; 1796 } 1797 1798 mFirst = false; 1799 mWillDrawSoon = false; 1800 mNewSurfaceNeeded = false; 1801 mViewVisibility = viewVisibility; 1802 1803 if (mAttachInfo.mHasWindowFocus) { 1804 final boolean imTarget = WindowManager.LayoutParams 1805 .mayUseInputMethod(mWindowAttributes.flags); 1806 if (imTarget != mLastWasImTarget) { 1807 mLastWasImTarget = imTarget; 1808 InputMethodManager imm = InputMethodManager.peekInstance(); 1809 if (imm != null && imTarget) { 1810 imm.startGettingWindowFocus(mView); 1811 imm.onWindowFocus(mView, mView.findFocus(), 1812 mWindowAttributes.softInputMode, 1813 !mHasHadWindowFocus, mWindowAttributes.flags); 1814 } 1815 } 1816 } 1817 1818 // Remember if we must report the next draw. 1819 if ((relayoutResult & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 1820 mReportNextDraw = true; 1821 } 1822 1823 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1824 viewVisibility != View.VISIBLE; 1825 1826 if (!cancelDraw && !newSurface) { 1827 if (!skipDraw || mReportNextDraw) { 1828 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1829 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1830 mPendingTransitions.get(i).startChangingAnimations(); 1831 } 1832 mPendingTransitions.clear(); 1833 } 1834 1835 performDraw(); 1836 } 1837 } else { 1838 // End any pending transitions on this non-visible window 1839 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1840 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1841 mPendingTransitions.get(i).endChangingAnimations(); 1842 } 1843 mPendingTransitions.clear(); 1844 } 1845 1846 if (viewVisibility == View.VISIBLE) { 1847 // Try again 1848 scheduleTraversals(); 1849 } 1850 } 1851 } 1852 1853 public void requestTransparentRegion(View child) { 1854 // the test below should not fail unless someone is messing with us 1855 checkThread(); 1856 if (mView == child) { 1857 mView.mPrivateFlags |= View.REQUEST_TRANSPARENT_REGIONS; 1858 // Need to make sure we re-evaluate the window attributes next 1859 // time around, to ensure the window has the correct format. 1860 mWindowAttributesChanged = true; 1861 mWindowAttributesChangesFlag = 0; 1862 requestLayout(); 1863 } 1864 } 1865 1866 /** 1867 * Figures out the measure spec for the root view in a window based on it's 1868 * layout params. 1869 * 1870 * @param windowSize 1871 * The available width or height of the window 1872 * 1873 * @param rootDimension 1874 * The layout params for one dimension (width or height) of the 1875 * window. 1876 * 1877 * @return The measure spec to use to measure the root view. 1878 */ 1879 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 1880 int measureSpec; 1881 switch (rootDimension) { 1882 1883 case ViewGroup.LayoutParams.MATCH_PARENT: 1884 // Window can't resize. Force root view to be windowSize. 1885 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 1886 break; 1887 case ViewGroup.LayoutParams.WRAP_CONTENT: 1888 // Window can resize. Set max size for root view. 1889 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 1890 break; 1891 default: 1892 // Window wants to be an exact size. Force root view to be that size. 1893 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 1894 break; 1895 } 1896 return measureSpec; 1897 } 1898 1899 int mHardwareYOffset; 1900 int mResizeAlpha; 1901 final Paint mResizePaint = new Paint(); 1902 1903 public void onHardwarePreDraw(HardwareCanvas canvas) { 1904 canvas.translate(0, -mHardwareYOffset); 1905 } 1906 1907 public void onHardwarePostDraw(HardwareCanvas canvas) { 1908 if (mResizeBuffer != null) { 1909 mResizePaint.setAlpha(mResizeAlpha); 1910 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 1911 } 1912 drawAccessibilityFocusedDrawableIfNeeded(canvas); 1913 } 1914 1915 /** 1916 * @hide 1917 */ 1918 void outputDisplayList(View view) { 1919 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 1920 DisplayList displayList = view.getDisplayList(); 1921 if (displayList != null) { 1922 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 1923 } 1924 } 1925 } 1926 1927 /** 1928 * @see #PROPERTY_PROFILE_RENDERING 1929 */ 1930 private void profileRendering(boolean enabled) { 1931 if (mProfileRendering) { 1932 mRenderProfilingEnabled = enabled; 1933 if (mRenderProfiler == null) { 1934 mRenderProfiler = new Thread(new Runnable() { 1935 @Override 1936 public void run() { 1937 Log.d(TAG, "Starting profiling thread"); 1938 while (mRenderProfilingEnabled) { 1939 mAttachInfo.mHandler.post(new Runnable() { 1940 @Override 1941 public void run() { 1942 mDirty.set(0, 0, mWidth, mHeight); 1943 scheduleTraversals(); 1944 } 1945 }); 1946 try { 1947 // TODO: This should use vsync when we get an API 1948 Thread.sleep(15); 1949 } catch (InterruptedException e) { 1950 Log.d(TAG, "Exiting profiling thread"); 1951 } 1952 } 1953 } 1954 }, "Rendering Profiler"); 1955 mRenderProfiler.start(); 1956 } else { 1957 mRenderProfiler.interrupt(); 1958 mRenderProfiler = null; 1959 } 1960 } 1961 } 1962 1963 /** 1964 * Called from draw() when DEBUG_FPS is enabled 1965 */ 1966 private void trackFPS() { 1967 // Tracks frames per second drawn. First value in a series of draws may be bogus 1968 // because it down not account for the intervening idle time 1969 long nowTime = System.currentTimeMillis(); 1970 if (mFpsStartTime < 0) { 1971 mFpsStartTime = mFpsPrevTime = nowTime; 1972 mFpsNumFrames = 0; 1973 } else { 1974 ++mFpsNumFrames; 1975 String thisHash = Integer.toHexString(System.identityHashCode(this)); 1976 long frameTime = nowTime - mFpsPrevTime; 1977 long totalTime = nowTime - mFpsStartTime; 1978 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 1979 mFpsPrevTime = nowTime; 1980 if (totalTime > 1000) { 1981 float fps = (float) mFpsNumFrames * 1000 / totalTime; 1982 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 1983 mFpsStartTime = nowTime; 1984 mFpsNumFrames = 0; 1985 } 1986 } 1987 } 1988 1989 private void performDraw() { 1990 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 1991 return; 1992 } 1993 1994 final long drawStartTime; 1995 if (ViewDebug.DEBUG_LATENCY) { 1996 drawStartTime = System.nanoTime(); 1997 if (mLastDrawFinishedTimeNanos != 0) { 1998 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting draw(); it has been " 1999 + ((drawStartTime - mLastDrawFinishedTimeNanos) * 0.000001f) 2000 + "ms since the last draw finished."); 2001 } else { 2002 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting draw()."); 2003 } 2004 } 2005 2006 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2007 mFullRedrawNeeded = false; 2008 2009 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2010 try { 2011 draw(fullRedrawNeeded); 2012 } finally { 2013 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2014 } 2015 2016 if (ViewDebug.DEBUG_LATENCY) { 2017 long now = System.nanoTime(); 2018 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "performDraw() took " 2019 + ((now - drawStartTime) * 0.000001f) 2020 + "ms."); 2021 mLastDrawFinishedTimeNanos = now; 2022 } 2023 2024 if (mReportNextDraw) { 2025 mReportNextDraw = false; 2026 2027 if (LOCAL_LOGV) { 2028 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2029 } 2030 if (mSurfaceHolder != null && mSurface.isValid()) { 2031 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2032 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2033 if (callbacks != null) { 2034 for (SurfaceHolder.Callback c : callbacks) { 2035 if (c instanceof SurfaceHolder.Callback2) { 2036 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2037 mSurfaceHolder); 2038 } 2039 } 2040 } 2041 } 2042 try { 2043 sWindowSession.finishDrawing(mWindow); 2044 } catch (RemoteException e) { 2045 } 2046 } 2047 } 2048 2049 private void draw(boolean fullRedrawNeeded) { 2050 Surface surface = mSurface; 2051 if (surface == null || !surface.isValid()) { 2052 return; 2053 } 2054 2055 if (DEBUG_FPS) { 2056 trackFPS(); 2057 } 2058 2059 if (!sFirstDrawComplete) { 2060 synchronized (sFirstDrawHandlers) { 2061 sFirstDrawComplete = true; 2062 final int count = sFirstDrawHandlers.size(); 2063 for (int i = 0; i< count; i++) { 2064 mHandler.post(sFirstDrawHandlers.get(i)); 2065 } 2066 } 2067 } 2068 2069 scrollToRectOrFocus(null, false); 2070 2071 final AttachInfo attachInfo = mAttachInfo; 2072 if (attachInfo.mViewScrollChanged) { 2073 attachInfo.mViewScrollChanged = false; 2074 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2075 } 2076 2077 int yoff; 2078 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2079 if (animating) { 2080 yoff = mScroller.getCurrY(); 2081 } else { 2082 yoff = mScrollY; 2083 } 2084 if (mCurScrollY != yoff) { 2085 mCurScrollY = yoff; 2086 fullRedrawNeeded = true; 2087 } 2088 2089 final float appScale = attachInfo.mApplicationScale; 2090 final boolean scalingRequired = attachInfo.mScalingRequired; 2091 2092 int resizeAlpha = 0; 2093 if (mResizeBuffer != null) { 2094 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2095 if (deltaTime < mResizeBufferDuration) { 2096 float amt = deltaTime/(float) mResizeBufferDuration; 2097 amt = mResizeInterpolator.getInterpolation(amt); 2098 animating = true; 2099 resizeAlpha = 255 - (int)(amt*255); 2100 } else { 2101 disposeResizeBuffer(); 2102 } 2103 } 2104 2105 final Rect dirty = mDirty; 2106 if (mSurfaceHolder != null) { 2107 // The app owns the surface, we won't draw. 2108 dirty.setEmpty(); 2109 if (animating) { 2110 if (mScroller != null) { 2111 mScroller.abortAnimation(); 2112 } 2113 disposeResizeBuffer(); 2114 } 2115 return; 2116 } 2117 2118 if (fullRedrawNeeded) { 2119 attachInfo.mIgnoreDirtyState = true; 2120 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2121 } 2122 2123 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2124 Log.v(TAG, "Draw " + mView + "/" 2125 + mWindowAttributes.getTitle() 2126 + ": dirty={" + dirty.left + "," + dirty.top 2127 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2128 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2129 appScale + ", width=" + mWidth + ", height=" + mHeight); 2130 } 2131 2132 attachInfo.mTreeObserver.dispatchOnDraw(); 2133 2134 if (!dirty.isEmpty() || mIsAnimating) { 2135 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2136 // Draw with hardware renderer. 2137 mIsAnimating = false; 2138 mHardwareYOffset = yoff; 2139 mResizeAlpha = resizeAlpha; 2140 2141 mCurrentDirty.set(dirty); 2142 mCurrentDirty.union(mPreviousDirty); 2143 mPreviousDirty.set(dirty); 2144 dirty.setEmpty(); 2145 2146 if (attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2147 animating ? null : mCurrentDirty)) { 2148 mPreviousDirty.set(0, 0, mWidth, mHeight); 2149 } 2150 } else if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2151 return; 2152 } 2153 } 2154 2155 if (animating) { 2156 mFullRedrawNeeded = true; 2157 scheduleTraversals(); 2158 } 2159 } 2160 2161 /** 2162 * @return true if drawing was succesfull, false if an error occurred 2163 */ 2164 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2165 boolean scalingRequired, Rect dirty) { 2166 2167 // Draw with software renderer. 2168 Canvas canvas; 2169 try { 2170 int left = dirty.left; 2171 int top = dirty.top; 2172 int right = dirty.right; 2173 int bottom = dirty.bottom; 2174 2175 final long lockCanvasStartTime; 2176 if (ViewDebug.DEBUG_LATENCY) { 2177 lockCanvasStartTime = System.nanoTime(); 2178 } 2179 2180 canvas = mSurface.lockCanvas(dirty); 2181 2182 if (ViewDebug.DEBUG_LATENCY) { 2183 long now = System.nanoTime(); 2184 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- lockCanvas() took " 2185 + ((now - lockCanvasStartTime) * 0.000001f) + "ms"); 2186 } 2187 2188 if (left != dirty.left || top != dirty.top || right != dirty.right || 2189 bottom != dirty.bottom) { 2190 attachInfo.mIgnoreDirtyState = true; 2191 } 2192 2193 // TODO: Do this in native 2194 canvas.setDensity(mDensity); 2195 } catch (Surface.OutOfResourcesException e) { 2196 Log.e(TAG, "OutOfResourcesException locking surface", e); 2197 try { 2198 if (!sWindowSession.outOfMemory(mWindow)) { 2199 Slog.w(TAG, "No processes killed for memory; killing self"); 2200 Process.killProcess(Process.myPid()); 2201 } 2202 } catch (RemoteException ex) { 2203 } 2204 mLayoutRequested = true; // ask wm for a new surface next time. 2205 return false; 2206 } catch (IllegalArgumentException e) { 2207 Log.e(TAG, "IllegalArgumentException locking surface", e); 2208 // Don't assume this is due to out of memory, it could be 2209 // something else, and if it is something else then we could 2210 // kill stuff (or ourself) for no reason. 2211 mLayoutRequested = true; // ask wm for a new surface next time. 2212 return false; 2213 } 2214 2215 try { 2216 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2217 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2218 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2219 //canvas.drawARGB(255, 255, 0, 0); 2220 } 2221 2222 long startTime = 0L; 2223 if (ViewDebug.DEBUG_PROFILE_DRAWING) { 2224 startTime = SystemClock.elapsedRealtime(); 2225 } 2226 2227 // If this bitmap's format includes an alpha channel, we 2228 // need to clear it before drawing so that the child will 2229 // properly re-composite its drawing on a transparent 2230 // background. This automatically respects the clip/dirty region 2231 // or 2232 // If we are applying an offset, we need to clear the area 2233 // where the offset doesn't appear to avoid having garbage 2234 // left in the blank areas. 2235 if (!canvas.isOpaque() || yoff != 0) { 2236 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2237 } 2238 2239 dirty.setEmpty(); 2240 mIsAnimating = false; 2241 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2242 mView.mPrivateFlags |= View.DRAWN; 2243 2244 if (DEBUG_DRAW) { 2245 Context cxt = mView.getContext(); 2246 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2247 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2248 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2249 } 2250 try { 2251 canvas.translate(0, -yoff); 2252 if (mTranslator != null) { 2253 mTranslator.translateCanvas(canvas); 2254 } 2255 canvas.setScreenDensity(scalingRequired 2256 ? DisplayMetrics.DENSITY_DEVICE : 0); 2257 attachInfo.mSetIgnoreDirtyState = false; 2258 2259 final long drawStartTime; 2260 if (ViewDebug.DEBUG_LATENCY) { 2261 drawStartTime = System.nanoTime(); 2262 } 2263 2264 mView.draw(canvas); 2265 2266 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2267 2268 if (ViewDebug.DEBUG_LATENCY) { 2269 long now = System.nanoTime(); 2270 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- draw() took " 2271 + ((now - drawStartTime) * 0.000001f) + "ms"); 2272 } 2273 } finally { 2274 if (!attachInfo.mSetIgnoreDirtyState) { 2275 // Only clear the flag if it was not set during the mView.draw() call 2276 attachInfo.mIgnoreDirtyState = false; 2277 } 2278 } 2279 2280 if (false && ViewDebug.consistencyCheckEnabled) { 2281 mView.dispatchConsistencyCheck(ViewDebug.CONSISTENCY_DRAWING); 2282 } 2283 2284 if (ViewDebug.DEBUG_PROFILE_DRAWING) { 2285 EventLog.writeEvent(60000, SystemClock.elapsedRealtime() - startTime); 2286 } 2287 } finally { 2288 final long unlockCanvasAndPostStartTime; 2289 if (ViewDebug.DEBUG_LATENCY) { 2290 unlockCanvasAndPostStartTime = System.nanoTime(); 2291 } 2292 2293 surface.unlockCanvasAndPost(canvas); 2294 2295 if (ViewDebug.DEBUG_LATENCY) { 2296 long now = System.nanoTime(); 2297 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- unlockCanvasAndPost() took " 2298 + ((now - unlockCanvasAndPostStartTime) * 0.000001f) + "ms"); 2299 } 2300 2301 if (LOCAL_LOGV) { 2302 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2303 } 2304 } 2305 return true; 2306 } 2307 2308 /** 2309 * We want to draw a highlight around the current accessibility focused. 2310 * Since adding a style for all possible view is not a viable option we 2311 * have this specialized drawing method. 2312 * 2313 * Note: We are doing this here to be able to draw the highlight for 2314 * virtual views in addition to real ones. 2315 * 2316 * @param canvas The canvas on which to draw. 2317 */ 2318 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2319 if (!AccessibilityManager.getInstance(mView.mContext).isEnabled()) { 2320 return; 2321 } 2322 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2323 return; 2324 } 2325 Drawable drawable = getAccessibilityFocusedDrawable(); 2326 if (drawable == null) { 2327 return; 2328 } 2329 AccessibilityNodeProvider provider = 2330 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2331 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2332 if (provider == null) { 2333 mAccessibilityFocusedHost.getDrawingRect(bounds); 2334 if (mView instanceof ViewGroup) { 2335 ViewGroup viewGroup = (ViewGroup) mView; 2336 viewGroup.offsetDescendantRectToMyCoords(mAccessibilityFocusedHost, bounds); 2337 } 2338 } else { 2339 if (mAccessibilityFocusedVirtualView == null) { 2340 mAccessibilityFocusedVirtualView = provider.findAccessibilitiyFocus(View.NO_ID); 2341 } 2342 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2343 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2344 } 2345 drawable.setBounds(bounds); 2346 drawable.draw(canvas); 2347 } 2348 2349 private Drawable getAccessibilityFocusedDrawable() { 2350 if (mAttachInfo != null) { 2351 // Lazily load the accessibility focus drawable. 2352 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2353 TypedValue value = new TypedValue(); 2354 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2355 R.attr.accessibilityFocusedDrawable, value, true); 2356 if (resolved) { 2357 mAttachInfo.mAccessibilityFocusDrawable = 2358 mView.mContext.getResources().getDrawable(value.resourceId); 2359 } 2360 } 2361 return mAttachInfo.mAccessibilityFocusDrawable; 2362 } 2363 return null; 2364 } 2365 2366 void invalidateDisplayLists() { 2367 final ArrayList<DisplayList> displayLists = mDisplayLists; 2368 final int count = displayLists.size(); 2369 2370 for (int i = 0; i < count; i++) { 2371 displayLists.get(i).invalidate(); 2372 } 2373 2374 displayLists.clear(); 2375 } 2376 2377 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2378 final View.AttachInfo attachInfo = mAttachInfo; 2379 final Rect ci = attachInfo.mContentInsets; 2380 final Rect vi = attachInfo.mVisibleInsets; 2381 int scrollY = 0; 2382 boolean handled = false; 2383 2384 if (vi.left > ci.left || vi.top > ci.top 2385 || vi.right > ci.right || vi.bottom > ci.bottom) { 2386 // We'll assume that we aren't going to change the scroll 2387 // offset, since we want to avoid that unless it is actually 2388 // going to make the focus visible... otherwise we scroll 2389 // all over the place. 2390 scrollY = mScrollY; 2391 // We can be called for two different situations: during a draw, 2392 // to update the scroll position if the focus has changed (in which 2393 // case 'rectangle' is null), or in response to a 2394 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2395 // is non-null and we just want to scroll to whatever that 2396 // rectangle is). 2397 View focus = mRealFocusedView; 2398 2399 // When in touch mode, focus points to the previously focused view, 2400 // which may have been removed from the view hierarchy. The following 2401 // line checks whether the view is still in our hierarchy. 2402 if (focus == null || focus.mAttachInfo != mAttachInfo) { 2403 mRealFocusedView = null; 2404 return false; 2405 } 2406 2407 if (focus != mLastScrolledFocus) { 2408 // If the focus has changed, then ignore any requests to scroll 2409 // to a rectangle; first we want to make sure the entire focus 2410 // view is visible. 2411 rectangle = null; 2412 } 2413 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2414 + " rectangle=" + rectangle + " ci=" + ci 2415 + " vi=" + vi); 2416 if (focus == mLastScrolledFocus && !mScrollMayChange 2417 && rectangle == null) { 2418 // Optimization: if the focus hasn't changed since last 2419 // time, and no layout has happened, then just leave things 2420 // as they are. 2421 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2422 + mScrollY + " vi=" + vi.toShortString()); 2423 } else if (focus != null) { 2424 // We need to determine if the currently focused view is 2425 // within the visible part of the window and, if not, apply 2426 // a pan so it can be seen. 2427 mLastScrolledFocus = focus; 2428 mScrollMayChange = false; 2429 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2430 // Try to find the rectangle from the focus view. 2431 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2432 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2433 + mView.getWidth() + " h=" + mView.getHeight() 2434 + " ci=" + ci.toShortString() 2435 + " vi=" + vi.toShortString()); 2436 if (rectangle == null) { 2437 focus.getFocusedRect(mTempRect); 2438 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2439 + ": focusRect=" + mTempRect.toShortString()); 2440 if (mView instanceof ViewGroup) { 2441 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2442 focus, mTempRect); 2443 } 2444 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2445 "Focus in window: focusRect=" 2446 + mTempRect.toShortString() 2447 + " visRect=" + mVisRect.toShortString()); 2448 } else { 2449 mTempRect.set(rectangle); 2450 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2451 "Request scroll to rect: " 2452 + mTempRect.toShortString() 2453 + " visRect=" + mVisRect.toShortString()); 2454 } 2455 if (mTempRect.intersect(mVisRect)) { 2456 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2457 "Focus window visible rect: " 2458 + mTempRect.toShortString()); 2459 if (mTempRect.height() > 2460 (mView.getHeight()-vi.top-vi.bottom)) { 2461 // If the focus simply is not going to fit, then 2462 // best is probably just to leave things as-is. 2463 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2464 "Too tall; leaving scrollY=" + scrollY); 2465 } else if ((mTempRect.top-scrollY) < vi.top) { 2466 scrollY -= vi.top - (mTempRect.top-scrollY); 2467 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2468 "Top covered; scrollY=" + scrollY); 2469 } else if ((mTempRect.bottom-scrollY) 2470 > (mView.getHeight()-vi.bottom)) { 2471 scrollY += (mTempRect.bottom-scrollY) 2472 - (mView.getHeight()-vi.bottom); 2473 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2474 "Bottom covered; scrollY=" + scrollY); 2475 } 2476 handled = true; 2477 } 2478 } 2479 } 2480 } 2481 2482 if (scrollY != mScrollY) { 2483 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2484 + mScrollY + " , new=" + scrollY); 2485 if (!immediate && mResizeBuffer == null) { 2486 if (mScroller == null) { 2487 mScroller = new Scroller(mView.getContext()); 2488 } 2489 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2490 } else if (mScroller != null) { 2491 mScroller.abortAnimation(); 2492 } 2493 mScrollY = scrollY; 2494 } 2495 2496 return handled; 2497 } 2498 2499 void setAccessibilityFocusedHost(View host) { 2500 if (mAccessibilityFocusedHost != null && mAccessibilityFocusedVirtualView == null) { 2501 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2502 } 2503 mAccessibilityFocusedHost = host; 2504 mAccessibilityFocusedVirtualView = null; 2505 } 2506 2507 public void requestChildFocus(View child, View focused) { 2508 checkThread(); 2509 2510 if (DEBUG_INPUT_RESIZE) { 2511 Log.v(TAG, "Request child focus: focus now " + focused); 2512 } 2513 2514 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, focused); 2515 scheduleTraversals(); 2516 2517 mFocusedView = mRealFocusedView = focused; 2518 } 2519 2520 public void clearChildFocus(View child) { 2521 checkThread(); 2522 2523 if (DEBUG_INPUT_RESIZE) { 2524 Log.v(TAG, "Clearing child focus"); 2525 } 2526 2527 mOldFocusedView = mFocusedView; 2528 2529 // Invoke the listener only if there is no view to take focus 2530 if (focusSearch(null, View.FOCUS_FORWARD) == null) { 2531 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, null); 2532 } 2533 2534 mFocusedView = mRealFocusedView = null; 2535 } 2536 2537 @Override 2538 public ViewParent getParentForAccessibility() { 2539 return null; 2540 } 2541 2542 public void focusableViewAvailable(View v) { 2543 checkThread(); 2544 if (mView != null) { 2545 if (!mView.hasFocus()) { 2546 v.requestFocus(); 2547 } else { 2548 // the one case where will transfer focus away from the current one 2549 // is if the current view is a view group that prefers to give focus 2550 // to its children first AND the view is a descendant of it. 2551 mFocusedView = mView.findFocus(); 2552 boolean descendantsHaveDibsOnFocus = 2553 (mFocusedView instanceof ViewGroup) && 2554 (((ViewGroup) mFocusedView).getDescendantFocusability() == 2555 ViewGroup.FOCUS_AFTER_DESCENDANTS); 2556 if (descendantsHaveDibsOnFocus && isViewDescendantOf(v, mFocusedView)) { 2557 // If a view gets the focus, the listener will be invoked from requestChildFocus() 2558 v.requestFocus(); 2559 } 2560 } 2561 } 2562 } 2563 2564 public void recomputeViewAttributes(View child) { 2565 checkThread(); 2566 if (mView == child) { 2567 mAttachInfo.mRecomputeGlobalAttributes = true; 2568 if (!mWillDrawSoon) { 2569 scheduleTraversals(); 2570 } 2571 } 2572 } 2573 2574 void dispatchDetachedFromWindow() { 2575 if (mView != null && mView.mAttachInfo != null) { 2576 if (mAttachInfo.mHardwareRenderer != null && 2577 mAttachInfo.mHardwareRenderer.isEnabled()) { 2578 mAttachInfo.mHardwareRenderer.validate(); 2579 } 2580 mView.dispatchDetachedFromWindow(); 2581 } 2582 2583 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2584 mAccessibilityManager.removeAccessibilityStateChangeListener( 2585 mAccessibilityInteractionConnectionManager); 2586 removeSendWindowContentChangedCallback(); 2587 2588 destroyHardwareRenderer(); 2589 2590 mView = null; 2591 mAttachInfo.mRootView = null; 2592 mAttachInfo.mSurface = null; 2593 2594 mSurface.release(); 2595 2596 if (mInputQueueCallback != null && mInputQueue != null) { 2597 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2598 mInputQueueCallback = null; 2599 mInputQueue = null; 2600 } else if (mInputEventReceiver != null) { 2601 mInputEventReceiver.dispose(); 2602 mInputEventReceiver = null; 2603 } 2604 try { 2605 sWindowSession.remove(mWindow); 2606 } catch (RemoteException e) { 2607 } 2608 2609 // Dispose the input channel after removing the window so the Window Manager 2610 // doesn't interpret the input channel being closed as an abnormal termination. 2611 if (mInputChannel != null) { 2612 mInputChannel.dispose(); 2613 mInputChannel = null; 2614 } 2615 2616 unscheduleTraversals(); 2617 } 2618 2619 void updateConfiguration(Configuration config, boolean force) { 2620 if (DEBUG_CONFIGURATION) Log.v(TAG, 2621 "Applying new config to window " 2622 + mWindowAttributes.getTitle() 2623 + ": " + config); 2624 2625 CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded(); 2626 if (ci != null) { 2627 config = new Configuration(config); 2628 ci.applyToConfiguration(config); 2629 } 2630 2631 synchronized (sConfigCallbacks) { 2632 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2633 sConfigCallbacks.get(i).onConfigurationChanged(config); 2634 } 2635 } 2636 if (mView != null) { 2637 // At this point the resources have been updated to 2638 // have the most recent config, whatever that is. Use 2639 // the on in them which may be newer. 2640 config = mView.getResources().getConfiguration(); 2641 if (force || mLastConfiguration.diff(config) != 0) { 2642 mLastConfiguration.setTo(config); 2643 mView.dispatchConfigurationChanged(config); 2644 } 2645 } 2646 } 2647 2648 /** 2649 * Return true if child is an ancestor of parent, (or equal to the parent). 2650 */ 2651 static boolean isViewDescendantOf(View child, View parent) { 2652 if (child == parent) { 2653 return true; 2654 } 2655 2656 final ViewParent theParent = child.getParent(); 2657 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2658 } 2659 2660 private static void forceLayout(View view) { 2661 view.forceLayout(); 2662 if (view instanceof ViewGroup) { 2663 ViewGroup group = (ViewGroup) view; 2664 final int count = group.getChildCount(); 2665 for (int i = 0; i < count; i++) { 2666 forceLayout(group.getChildAt(i)); 2667 } 2668 } 2669 } 2670 2671 private final static int MSG_INVALIDATE = 1; 2672 private final static int MSG_INVALIDATE_RECT = 2; 2673 private final static int MSG_DIE = 3; 2674 private final static int MSG_RESIZED = 4; 2675 private final static int MSG_RESIZED_REPORT = 5; 2676 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2677 private final static int MSG_DISPATCH_KEY = 7; 2678 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2679 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2680 private final static int MSG_IME_FINISHED_EVENT = 10; 2681 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2682 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2683 private final static int MSG_CHECK_FOCUS = 13; 2684 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2685 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2686 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2687 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2688 private final static int MSG_UPDATE_CONFIGURATION = 18; 2689 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2690 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2691 private final static int MSG_INVALIDATE_DISPLAY_LIST = 21; 2692 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 22; 2693 private final static int MSG_DISPATCH_DONE_ANIMATING = 23; 2694 2695 final class ViewRootHandler extends Handler { 2696 @Override 2697 public String getMessageName(Message message) { 2698 switch (message.what) { 2699 case MSG_INVALIDATE: 2700 return "MSG_INVALIDATE"; 2701 case MSG_INVALIDATE_RECT: 2702 return "MSG_INVALIDATE_RECT"; 2703 case MSG_DIE: 2704 return "MSG_DIE"; 2705 case MSG_RESIZED: 2706 return "MSG_RESIZED"; 2707 case MSG_RESIZED_REPORT: 2708 return "MSG_RESIZED_REPORT"; 2709 case MSG_WINDOW_FOCUS_CHANGED: 2710 return "MSG_WINDOW_FOCUS_CHANGED"; 2711 case MSG_DISPATCH_KEY: 2712 return "MSG_DISPATCH_KEY"; 2713 case MSG_DISPATCH_APP_VISIBILITY: 2714 return "MSG_DISPATCH_APP_VISIBILITY"; 2715 case MSG_DISPATCH_GET_NEW_SURFACE: 2716 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2717 case MSG_IME_FINISHED_EVENT: 2718 return "MSG_IME_FINISHED_EVENT"; 2719 case MSG_DISPATCH_KEY_FROM_IME: 2720 return "MSG_DISPATCH_KEY_FROM_IME"; 2721 case MSG_FINISH_INPUT_CONNECTION: 2722 return "MSG_FINISH_INPUT_CONNECTION"; 2723 case MSG_CHECK_FOCUS: 2724 return "MSG_CHECK_FOCUS"; 2725 case MSG_CLOSE_SYSTEM_DIALOGS: 2726 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2727 case MSG_DISPATCH_DRAG_EVENT: 2728 return "MSG_DISPATCH_DRAG_EVENT"; 2729 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2730 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2731 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2732 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2733 case MSG_UPDATE_CONFIGURATION: 2734 return "MSG_UPDATE_CONFIGURATION"; 2735 case MSG_PROCESS_INPUT_EVENTS: 2736 return "MSG_PROCESS_INPUT_EVENTS"; 2737 case MSG_DISPATCH_SCREEN_STATE: 2738 return "MSG_DISPATCH_SCREEN_STATE"; 2739 case MSG_INVALIDATE_DISPLAY_LIST: 2740 return "MSG_INVALIDATE_DISPLAY_LIST"; 2741 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2742 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2743 case MSG_DISPATCH_DONE_ANIMATING: 2744 return "MSG_DISPATCH_DONE_ANIMATING"; 2745 } 2746 return super.getMessageName(message); 2747 } 2748 2749 @Override 2750 public void handleMessage(Message msg) { 2751 switch (msg.what) { 2752 case MSG_INVALIDATE: 2753 ((View) msg.obj).invalidate(); 2754 break; 2755 case MSG_INVALIDATE_RECT: 2756 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2757 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2758 info.release(); 2759 break; 2760 case MSG_IME_FINISHED_EVENT: 2761 handleImeFinishedEvent(msg.arg1, msg.arg2 != 0); 2762 break; 2763 case MSG_PROCESS_INPUT_EVENTS: 2764 mProcessInputEventsScheduled = false; 2765 doProcessInputEvents(); 2766 break; 2767 case MSG_DISPATCH_APP_VISIBILITY: 2768 handleAppVisibility(msg.arg1 != 0); 2769 break; 2770 case MSG_DISPATCH_GET_NEW_SURFACE: 2771 handleGetNewSurface(); 2772 break; 2773 case MSG_RESIZED: 2774 ResizedInfo ri = (ResizedInfo)msg.obj; 2775 2776 if (mWinFrame.width() == msg.arg1 && mWinFrame.height() == msg.arg2 2777 && mPendingContentInsets.equals(ri.coveredInsets) 2778 && mPendingVisibleInsets.equals(ri.visibleInsets) 2779 && ((ResizedInfo)msg.obj).newConfig == null) { 2780 break; 2781 } 2782 // fall through... 2783 case MSG_RESIZED_REPORT: 2784 if (mAdded) { 2785 Configuration config = ((ResizedInfo)msg.obj).newConfig; 2786 if (config != null) { 2787 updateConfiguration(config, false); 2788 } 2789 mWinFrame.left = 0; 2790 mWinFrame.right = msg.arg1; 2791 mWinFrame.top = 0; 2792 mWinFrame.bottom = msg.arg2; 2793 mPendingContentInsets.set(((ResizedInfo)msg.obj).coveredInsets); 2794 mPendingVisibleInsets.set(((ResizedInfo)msg.obj).visibleInsets); 2795 if (msg.what == MSG_RESIZED_REPORT) { 2796 mReportNextDraw = true; 2797 } 2798 2799 if (mView != null) { 2800 forceLayout(mView); 2801 } 2802 requestLayout(); 2803 } 2804 break; 2805 case MSG_WINDOW_FOCUS_CHANGED: { 2806 if (mAdded) { 2807 boolean hasWindowFocus = msg.arg1 != 0; 2808 mAttachInfo.mHasWindowFocus = hasWindowFocus; 2809 2810 profileRendering(hasWindowFocus); 2811 2812 if (hasWindowFocus) { 2813 boolean inTouchMode = msg.arg2 != 0; 2814 ensureTouchModeLocally(inTouchMode); 2815 2816 if (mAttachInfo.mHardwareRenderer != null && 2817 mSurface != null && mSurface.isValid()) { 2818 mFullRedrawNeeded = true; 2819 try { 2820 mAttachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2821 mHolder); 2822 } catch (Surface.OutOfResourcesException e) { 2823 Log.e(TAG, "OutOfResourcesException locking surface", e); 2824 try { 2825 if (!sWindowSession.outOfMemory(mWindow)) { 2826 Slog.w(TAG, "No processes killed for memory; killing self"); 2827 Process.killProcess(Process.myPid()); 2828 } 2829 } catch (RemoteException ex) { 2830 } 2831 // Retry in a bit. 2832 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 2833 return; 2834 } 2835 } 2836 } 2837 2838 mLastWasImTarget = WindowManager.LayoutParams 2839 .mayUseInputMethod(mWindowAttributes.flags); 2840 2841 InputMethodManager imm = InputMethodManager.peekInstance(); 2842 if (mView != null) { 2843 if (hasWindowFocus && imm != null && mLastWasImTarget) { 2844 imm.startGettingWindowFocus(mView); 2845 } 2846 mAttachInfo.mKeyDispatchState.reset(); 2847 mView.dispatchWindowFocusChanged(hasWindowFocus); 2848 } 2849 2850 // Note: must be done after the focus change callbacks, 2851 // so all of the view state is set up correctly. 2852 if (hasWindowFocus) { 2853 if (imm != null && mLastWasImTarget) { 2854 imm.onWindowFocus(mView, mView.findFocus(), 2855 mWindowAttributes.softInputMode, 2856 !mHasHadWindowFocus, mWindowAttributes.flags); 2857 } 2858 // Clear the forward bit. We can just do this directly, since 2859 // the window manager doesn't care about it. 2860 mWindowAttributes.softInputMode &= 2861 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2862 ((WindowManager.LayoutParams)mView.getLayoutParams()) 2863 .softInputMode &= 2864 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2865 mHasHadWindowFocus = true; 2866 } 2867 2868 if (mView != null && mAccessibilityManager.isEnabled()) { 2869 if (hasWindowFocus) { 2870 mView.sendAccessibilityEvent( 2871 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2872 // Give accessibility focus to the view that has input 2873 // focus if such, otherwise to the first one. 2874 if (mView instanceof ViewGroup) { 2875 ViewGroup viewGroup = (ViewGroup) mView; 2876 View focused = viewGroup.findFocus(); 2877 if (focused != null) { 2878 focused.requestAccessibilityFocus(); 2879 } 2880 } 2881 // There is no accessibility focus, despite our effort 2882 // above, now just give it to the first view. 2883 if (mAccessibilityFocusedHost == null) { 2884 mView.requestAccessibilityFocus(); 2885 } 2886 } else { 2887 // Clear accessibility focus when the window loses input focus. 2888 setAccessibilityFocusedHost(null); 2889 } 2890 } 2891 } 2892 } break; 2893 case MSG_DIE: 2894 doDie(); 2895 break; 2896 case MSG_DISPATCH_KEY: { 2897 KeyEvent event = (KeyEvent)msg.obj; 2898 enqueueInputEvent(event, null, 0, true); 2899 } break; 2900 case MSG_DISPATCH_KEY_FROM_IME: { 2901 if (LOCAL_LOGV) Log.v( 2902 TAG, "Dispatching key " 2903 + msg.obj + " from IME to " + mView); 2904 KeyEvent event = (KeyEvent)msg.obj; 2905 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 2906 // The IME is trying to say this event is from the 2907 // system! Bad bad bad! 2908 //noinspection UnusedAssignment 2909 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 2910 } 2911 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 2912 } break; 2913 case MSG_FINISH_INPUT_CONNECTION: { 2914 InputMethodManager imm = InputMethodManager.peekInstance(); 2915 if (imm != null) { 2916 imm.reportFinishInputConnection((InputConnection)msg.obj); 2917 } 2918 } break; 2919 case MSG_CHECK_FOCUS: { 2920 InputMethodManager imm = InputMethodManager.peekInstance(); 2921 if (imm != null) { 2922 imm.checkFocus(); 2923 } 2924 } break; 2925 case MSG_CLOSE_SYSTEM_DIALOGS: { 2926 if (mView != null) { 2927 mView.onCloseSystemDialogs((String)msg.obj); 2928 } 2929 } break; 2930 case MSG_DISPATCH_DRAG_EVENT: 2931 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 2932 DragEvent event = (DragEvent)msg.obj; 2933 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 2934 handleDragEvent(event); 2935 } break; 2936 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 2937 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo)msg.obj); 2938 } break; 2939 case MSG_UPDATE_CONFIGURATION: { 2940 Configuration config = (Configuration)msg.obj; 2941 if (config.isOtherSeqNewer(mLastConfiguration)) { 2942 config = mLastConfiguration; 2943 } 2944 updateConfiguration(config, false); 2945 } break; 2946 case MSG_DISPATCH_SCREEN_STATE: { 2947 if (mView != null) { 2948 handleScreenStateChange(msg.arg1 == 1); 2949 } 2950 } break; 2951 case MSG_INVALIDATE_DISPLAY_LIST: { 2952 invalidateDisplayLists(); 2953 } break; 2954 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 2955 setAccessibilityFocusedHost(null); 2956 } break; 2957 case MSG_DISPATCH_DONE_ANIMATING: { 2958 handleDispatchDoneAnimating(); 2959 } break; 2960 } 2961 } 2962 } 2963 2964 final ViewRootHandler mHandler = new ViewRootHandler(); 2965 2966 /** 2967 * Something in the current window tells us we need to change the touch mode. For 2968 * example, we are not in touch mode, and the user touches the screen. 2969 * 2970 * If the touch mode has changed, tell the window manager, and handle it locally. 2971 * 2972 * @param inTouchMode Whether we want to be in touch mode. 2973 * @return True if the touch mode changed and focus changed was changed as a result 2974 */ 2975 boolean ensureTouchMode(boolean inTouchMode) { 2976 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 2977 + "touch mode is " + mAttachInfo.mInTouchMode); 2978 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 2979 2980 // tell the window manager 2981 try { 2982 sWindowSession.setInTouchMode(inTouchMode); 2983 } catch (RemoteException e) { 2984 throw new RuntimeException(e); 2985 } 2986 2987 // handle the change 2988 return ensureTouchModeLocally(inTouchMode); 2989 } 2990 2991 /** 2992 * Ensure that the touch mode for this window is set, and if it is changing, 2993 * take the appropriate action. 2994 * @param inTouchMode Whether we want to be in touch mode. 2995 * @return True if the touch mode changed and focus changed was changed as a result 2996 */ 2997 private boolean ensureTouchModeLocally(boolean inTouchMode) { 2998 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 2999 + "touch mode is " + mAttachInfo.mInTouchMode); 3000 3001 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3002 3003 mAttachInfo.mInTouchMode = inTouchMode; 3004 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3005 3006 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3007 } 3008 3009 private boolean enterTouchMode() { 3010 if (mView != null) { 3011 if (mView.hasFocus()) { 3012 // note: not relying on mFocusedView here because this could 3013 // be when the window is first being added, and mFocused isn't 3014 // set yet. 3015 final View focused = mView.findFocus(); 3016 if (focused != null && !focused.isFocusableInTouchMode()) { 3017 3018 final ViewGroup ancestorToTakeFocus = 3019 findAncestorToTakeFocusInTouchMode(focused); 3020 if (ancestorToTakeFocus != null) { 3021 // there is an ancestor that wants focus after its descendants that 3022 // is focusable in touch mode.. give it focus 3023 return ancestorToTakeFocus.requestFocus(); 3024 } else { 3025 // nothing appropriate to have focus in touch mode, clear it out 3026 mView.unFocus(); 3027 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(focused, null); 3028 mFocusedView = null; 3029 mOldFocusedView = null; 3030 return true; 3031 } 3032 } 3033 } 3034 } 3035 return false; 3036 } 3037 3038 /** 3039 * Find an ancestor of focused that wants focus after its descendants and is 3040 * focusable in touch mode. 3041 * @param focused The currently focused view. 3042 * @return An appropriate view, or null if no such view exists. 3043 */ 3044 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3045 ViewParent parent = focused.getParent(); 3046 while (parent instanceof ViewGroup) { 3047 final ViewGroup vgParent = (ViewGroup) parent; 3048 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3049 && vgParent.isFocusableInTouchMode()) { 3050 return vgParent; 3051 } 3052 if (vgParent.isRootNamespace()) { 3053 return null; 3054 } else { 3055 parent = vgParent.getParent(); 3056 } 3057 } 3058 return null; 3059 } 3060 3061 private boolean leaveTouchMode() { 3062 if (mView != null) { 3063 if (mView.hasFocus()) { 3064 // i learned the hard way to not trust mFocusedView :) 3065 mFocusedView = mView.findFocus(); 3066 if (!(mFocusedView instanceof ViewGroup)) { 3067 // some view has focus, let it keep it 3068 return false; 3069 } else if (((ViewGroup)mFocusedView).getDescendantFocusability() != 3070 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3071 // some view group has focus, and doesn't prefer its children 3072 // over itself for focus, so let them keep it. 3073 return false; 3074 } 3075 } 3076 3077 // find the best view to give focus to in this brave new non-touch-mode 3078 // world 3079 final View focused = focusSearch(null, View.FOCUS_DOWN); 3080 if (focused != null) { 3081 return focused.requestFocus(View.FOCUS_DOWN); 3082 } 3083 } 3084 return false; 3085 } 3086 3087 private void deliverInputEvent(QueuedInputEvent q) { 3088 if (ViewDebug.DEBUG_LATENCY) { 3089 q.mDeliverTimeNanos = System.nanoTime(); 3090 } 3091 3092 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 3093 try { 3094 if (q.mEvent instanceof KeyEvent) { 3095 deliverKeyEvent(q); 3096 } else { 3097 final int source = q.mEvent.getSource(); 3098 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3099 deliverPointerEvent(q); 3100 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3101 deliverTrackballEvent(q); 3102 } else { 3103 deliverGenericMotionEvent(q); 3104 } 3105 } 3106 } finally { 3107 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 3108 } 3109 } 3110 3111 private void deliverPointerEvent(QueuedInputEvent q) { 3112 final MotionEvent event = (MotionEvent)q.mEvent; 3113 final boolean isTouchEvent = event.isTouchEvent(); 3114 if (mInputEventConsistencyVerifier != null) { 3115 if (isTouchEvent) { 3116 mInputEventConsistencyVerifier.onTouchEvent(event, 0); 3117 } else { 3118 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 3119 } 3120 } 3121 3122 // If there is no view, then the event will not be handled. 3123 if (mView == null || !mAdded) { 3124 finishInputEvent(q, false); 3125 return; 3126 } 3127 3128 // Translate the pointer event for compatibility, if needed. 3129 if (mTranslator != null) { 3130 mTranslator.translateEventInScreenToAppWindow(event); 3131 } 3132 3133 // Enter touch mode on down or scroll. 3134 final int action = event.getAction(); 3135 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3136 ensureTouchMode(true); 3137 } 3138 3139 // Offset the scroll position. 3140 if (mCurScrollY != 0) { 3141 event.offsetLocation(0, mCurScrollY); 3142 } 3143 if (MEASURE_LATENCY) { 3144 lt.sample("A Dispatching PointerEvents", System.nanoTime() - event.getEventTimeNano()); 3145 } 3146 3147 // Remember the touch position for possible drag-initiation. 3148 if (isTouchEvent) { 3149 mLastTouchPoint.x = event.getRawX(); 3150 mLastTouchPoint.y = event.getRawY(); 3151 } 3152 3153 // Dispatch touch to view hierarchy. 3154 boolean handled = mView.dispatchPointerEvent(event); 3155 if (MEASURE_LATENCY) { 3156 lt.sample("B Dispatched PointerEvents ", System.nanoTime() - event.getEventTimeNano()); 3157 } 3158 if (handled) { 3159 finishInputEvent(q, true); 3160 return; 3161 } 3162 3163 // Pointer event was unhandled. 3164 finishInputEvent(q, false); 3165 } 3166 3167 private void deliverTrackballEvent(QueuedInputEvent q) { 3168 final MotionEvent event = (MotionEvent)q.mEvent; 3169 if (mInputEventConsistencyVerifier != null) { 3170 mInputEventConsistencyVerifier.onTrackballEvent(event, 0); 3171 } 3172 3173 // If there is no view, then the event will not be handled. 3174 if (mView == null || !mAdded) { 3175 finishInputEvent(q, false); 3176 return; 3177 } 3178 3179 // Deliver the trackball event to the view. 3180 if (mView.dispatchTrackballEvent(event)) { 3181 // If we reach this, we delivered a trackball event to mView and 3182 // mView consumed it. Because we will not translate the trackball 3183 // event into a key event, touch mode will not exit, so we exit 3184 // touch mode here. 3185 ensureTouchMode(false); 3186 3187 finishInputEvent(q, true); 3188 mLastTrackballTime = Integer.MIN_VALUE; 3189 return; 3190 } 3191 3192 // Translate the trackball event into DPAD keys and try to deliver those. 3193 final TrackballAxis x = mTrackballAxisX; 3194 final TrackballAxis y = mTrackballAxisY; 3195 3196 long curTime = SystemClock.uptimeMillis(); 3197 if ((mLastTrackballTime + MAX_TRACKBALL_DELAY) < curTime) { 3198 // It has been too long since the last movement, 3199 // so restart at the beginning. 3200 x.reset(0); 3201 y.reset(0); 3202 mLastTrackballTime = curTime; 3203 } 3204 3205 final int action = event.getAction(); 3206 final int metaState = event.getMetaState(); 3207 switch (action) { 3208 case MotionEvent.ACTION_DOWN: 3209 x.reset(2); 3210 y.reset(2); 3211 enqueueInputEvent(new KeyEvent(curTime, curTime, 3212 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3213 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3214 InputDevice.SOURCE_KEYBOARD)); 3215 break; 3216 case MotionEvent.ACTION_UP: 3217 x.reset(2); 3218 y.reset(2); 3219 enqueueInputEvent(new KeyEvent(curTime, curTime, 3220 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3221 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3222 InputDevice.SOURCE_KEYBOARD)); 3223 break; 3224 } 3225 3226 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + x.position + " step=" 3227 + x.step + " dir=" + x.dir + " acc=" + x.acceleration 3228 + " move=" + event.getX() 3229 + " / Y=" + y.position + " step=" 3230 + y.step + " dir=" + y.dir + " acc=" + y.acceleration 3231 + " move=" + event.getY()); 3232 final float xOff = x.collect(event.getX(), event.getEventTime(), "X"); 3233 final float yOff = y.collect(event.getY(), event.getEventTime(), "Y"); 3234 3235 // Generate DPAD events based on the trackball movement. 3236 // We pick the axis that has moved the most as the direction of 3237 // the DPAD. When we generate DPAD events for one axis, then the 3238 // other axis is reset -- we don't want to perform DPAD jumps due 3239 // to slight movements in the trackball when making major movements 3240 // along the other axis. 3241 int keycode = 0; 3242 int movement = 0; 3243 float accel = 1; 3244 if (xOff > yOff) { 3245 movement = x.generate((2/event.getXPrecision())); 3246 if (movement != 0) { 3247 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 3248 : KeyEvent.KEYCODE_DPAD_LEFT; 3249 accel = x.acceleration; 3250 y.reset(2); 3251 } 3252 } else if (yOff > 0) { 3253 movement = y.generate((2/event.getYPrecision())); 3254 if (movement != 0) { 3255 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 3256 : KeyEvent.KEYCODE_DPAD_UP; 3257 accel = y.acceleration; 3258 x.reset(2); 3259 } 3260 } 3261 3262 if (keycode != 0) { 3263 if (movement < 0) movement = -movement; 3264 int accelMovement = (int)(movement * accel); 3265 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 3266 + " accelMovement=" + accelMovement 3267 + " accel=" + accel); 3268 if (accelMovement > movement) { 3269 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3270 + keycode); 3271 movement--; 3272 int repeatCount = accelMovement - movement; 3273 enqueueInputEvent(new KeyEvent(curTime, curTime, 3274 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 3275 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3276 InputDevice.SOURCE_KEYBOARD)); 3277 } 3278 while (movement > 0) { 3279 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3280 + keycode); 3281 movement--; 3282 curTime = SystemClock.uptimeMillis(); 3283 enqueueInputEvent(new KeyEvent(curTime, curTime, 3284 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 3285 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3286 InputDevice.SOURCE_KEYBOARD)); 3287 enqueueInputEvent(new KeyEvent(curTime, curTime, 3288 KeyEvent.ACTION_UP, keycode, 0, metaState, 3289 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3290 InputDevice.SOURCE_KEYBOARD)); 3291 } 3292 mLastTrackballTime = curTime; 3293 } 3294 3295 // Unfortunately we can't tell whether the application consumed the keys, so 3296 // we always consider the trackball event handled. 3297 finishInputEvent(q, true); 3298 } 3299 3300 private void deliverGenericMotionEvent(QueuedInputEvent q) { 3301 final MotionEvent event = (MotionEvent)q.mEvent; 3302 if (mInputEventConsistencyVerifier != null) { 3303 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 3304 } 3305 3306 final int source = event.getSource(); 3307 final boolean isJoystick = (source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0; 3308 3309 // If there is no view, then the event will not be handled. 3310 if (mView == null || !mAdded) { 3311 if (isJoystick) { 3312 updateJoystickDirection(event, false); 3313 } 3314 finishInputEvent(q, false); 3315 return; 3316 } 3317 3318 // Deliver the event to the view. 3319 if (mView.dispatchGenericMotionEvent(event)) { 3320 if (isJoystick) { 3321 updateJoystickDirection(event, false); 3322 } 3323 finishInputEvent(q, true); 3324 return; 3325 } 3326 3327 if (isJoystick) { 3328 // Translate the joystick event into DPAD keys and try to deliver those. 3329 updateJoystickDirection(event, true); 3330 finishInputEvent(q, true); 3331 } else { 3332 finishInputEvent(q, false); 3333 } 3334 } 3335 3336 private void updateJoystickDirection(MotionEvent event, boolean synthesizeNewKeys) { 3337 final long time = event.getEventTime(); 3338 final int metaState = event.getMetaState(); 3339 final int deviceId = event.getDeviceId(); 3340 final int source = event.getSource(); 3341 3342 int xDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_X)); 3343 if (xDirection == 0) { 3344 xDirection = joystickAxisValueToDirection(event.getX()); 3345 } 3346 3347 int yDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 3348 if (yDirection == 0) { 3349 yDirection = joystickAxisValueToDirection(event.getY()); 3350 } 3351 3352 if (xDirection != mLastJoystickXDirection) { 3353 if (mLastJoystickXKeyCode != 0) { 3354 enqueueInputEvent(new KeyEvent(time, time, 3355 KeyEvent.ACTION_UP, mLastJoystickXKeyCode, 0, metaState, 3356 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3357 mLastJoystickXKeyCode = 0; 3358 } 3359 3360 mLastJoystickXDirection = xDirection; 3361 3362 if (xDirection != 0 && synthesizeNewKeys) { 3363 mLastJoystickXKeyCode = xDirection > 0 3364 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 3365 enqueueInputEvent(new KeyEvent(time, time, 3366 KeyEvent.ACTION_DOWN, mLastJoystickXKeyCode, 0, metaState, 3367 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3368 } 3369 } 3370 3371 if (yDirection != mLastJoystickYDirection) { 3372 if (mLastJoystickYKeyCode != 0) { 3373 enqueueInputEvent(new KeyEvent(time, time, 3374 KeyEvent.ACTION_UP, mLastJoystickYKeyCode, 0, metaState, 3375 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3376 mLastJoystickYKeyCode = 0; 3377 } 3378 3379 mLastJoystickYDirection = yDirection; 3380 3381 if (yDirection != 0 && synthesizeNewKeys) { 3382 mLastJoystickYKeyCode = yDirection > 0 3383 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 3384 enqueueInputEvent(new KeyEvent(time, time, 3385 KeyEvent.ACTION_DOWN, mLastJoystickYKeyCode, 0, metaState, 3386 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3387 } 3388 } 3389 } 3390 3391 private static int joystickAxisValueToDirection(float value) { 3392 if (value >= 0.5f) { 3393 return 1; 3394 } else if (value <= -0.5f) { 3395 return -1; 3396 } else { 3397 return 0; 3398 } 3399 } 3400 3401 /** 3402 * Returns true if the key is used for keyboard navigation. 3403 * @param keyEvent The key event. 3404 * @return True if the key is used for keyboard navigation. 3405 */ 3406 private static boolean isNavigationKey(KeyEvent keyEvent) { 3407 switch (keyEvent.getKeyCode()) { 3408 case KeyEvent.KEYCODE_DPAD_LEFT: 3409 case KeyEvent.KEYCODE_DPAD_RIGHT: 3410 case KeyEvent.KEYCODE_DPAD_UP: 3411 case KeyEvent.KEYCODE_DPAD_DOWN: 3412 case KeyEvent.KEYCODE_DPAD_CENTER: 3413 case KeyEvent.KEYCODE_PAGE_UP: 3414 case KeyEvent.KEYCODE_PAGE_DOWN: 3415 case KeyEvent.KEYCODE_MOVE_HOME: 3416 case KeyEvent.KEYCODE_MOVE_END: 3417 case KeyEvent.KEYCODE_TAB: 3418 case KeyEvent.KEYCODE_SPACE: 3419 case KeyEvent.KEYCODE_ENTER: 3420 return true; 3421 } 3422 return false; 3423 } 3424 3425 /** 3426 * Returns true if the key is used for typing. 3427 * @param keyEvent The key event. 3428 * @return True if the key is used for typing. 3429 */ 3430 private static boolean isTypingKey(KeyEvent keyEvent) { 3431 return keyEvent.getUnicodeChar() > 0; 3432 } 3433 3434 /** 3435 * See if the key event means we should leave touch mode (and leave touch mode if so). 3436 * @param event The key event. 3437 * @return Whether this key event should be consumed (meaning the act of 3438 * leaving touch mode alone is considered the event). 3439 */ 3440 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 3441 // Only relevant in touch mode. 3442 if (!mAttachInfo.mInTouchMode) { 3443 return false; 3444 } 3445 3446 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 3447 final int action = event.getAction(); 3448 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 3449 return false; 3450 } 3451 3452 // Don't leave touch mode if the IME told us not to. 3453 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 3454 return false; 3455 } 3456 3457 // If the key can be used for keyboard navigation then leave touch mode 3458 // and select a focused view if needed (in ensureTouchMode). 3459 // When a new focused view is selected, we consume the navigation key because 3460 // navigation doesn't make much sense unless a view already has focus so 3461 // the key's purpose is to set focus. 3462 if (isNavigationKey(event)) { 3463 return ensureTouchMode(false); 3464 } 3465 3466 // If the key can be used for typing then leave touch mode 3467 // and select a focused view if needed (in ensureTouchMode). 3468 // Always allow the view to process the typing key. 3469 if (isTypingKey(event)) { 3470 ensureTouchMode(false); 3471 return false; 3472 } 3473 3474 return false; 3475 } 3476 3477 private void deliverKeyEvent(QueuedInputEvent q) { 3478 final KeyEvent event = (KeyEvent)q.mEvent; 3479 if (mInputEventConsistencyVerifier != null) { 3480 mInputEventConsistencyVerifier.onKeyEvent(event, 0); 3481 } 3482 3483 if ((q.mFlags & QueuedInputEvent.FLAG_DELIVER_POST_IME) == 0) { 3484 // If there is no view, then the event will not be handled. 3485 if (mView == null || !mAdded) { 3486 finishInputEvent(q, false); 3487 return; 3488 } 3489 3490 if (LOCAL_LOGV) Log.v(TAG, "Dispatching key " + event + " to " + mView); 3491 3492 // Perform predispatching before the IME. 3493 if (mView.dispatchKeyEventPreIme(event)) { 3494 finishInputEvent(q, true); 3495 return; 3496 } 3497 3498 // Dispatch to the IME before propagating down the view hierarchy. 3499 // The IME will eventually call back into handleImeFinishedEvent. 3500 if (mLastWasImTarget) { 3501 InputMethodManager imm = InputMethodManager.peekInstance(); 3502 if (imm != null) { 3503 final int seq = event.getSequenceNumber(); 3504 if (DEBUG_IMF) Log.v(TAG, "Sending key event to IME: seq=" 3505 + seq + " event=" + event); 3506 imm.dispatchKeyEvent(mView.getContext(), seq, event, mInputMethodCallback); 3507 return; 3508 } 3509 } 3510 } 3511 3512 // Not dispatching to IME, continue with post IME actions. 3513 deliverKeyEventPostIme(q); 3514 } 3515 3516 void handleImeFinishedEvent(int seq, boolean handled) { 3517 final QueuedInputEvent q = mCurrentInputEvent; 3518 if (q != null && q.mEvent.getSequenceNumber() == seq) { 3519 final KeyEvent event = (KeyEvent)q.mEvent; 3520 if (DEBUG_IMF) { 3521 Log.v(TAG, "IME finished event: seq=" + seq 3522 + " handled=" + handled + " event=" + event); 3523 } 3524 if (handled) { 3525 finishInputEvent(q, true); 3526 } else { 3527 deliverKeyEventPostIme(q); 3528 } 3529 } else { 3530 if (DEBUG_IMF) { 3531 Log.v(TAG, "IME finished event: seq=" + seq 3532 + " handled=" + handled + ", event not found!"); 3533 } 3534 } 3535 } 3536 3537 private void deliverKeyEventPostIme(QueuedInputEvent q) { 3538 final KeyEvent event = (KeyEvent)q.mEvent; 3539 if (ViewDebug.DEBUG_LATENCY) { 3540 q.mDeliverPostImeTimeNanos = System.nanoTime(); 3541 } 3542 3543 // If the view went away, then the event will not be handled. 3544 if (mView == null || !mAdded) { 3545 finishInputEvent(q, false); 3546 return; 3547 } 3548 3549 // If the key's purpose is to exit touch mode then we consume it and consider it handled. 3550 if (checkForLeavingTouchModeAndConsume(event)) { 3551 finishInputEvent(q, true); 3552 return; 3553 } 3554 3555 // Make sure the fallback event policy sees all keys that will be delivered to the 3556 // view hierarchy. 3557 mFallbackEventHandler.preDispatchKeyEvent(event); 3558 3559 // Deliver the key to the view hierarchy. 3560 if (mView.dispatchKeyEvent(event)) { 3561 finishInputEvent(q, true); 3562 return; 3563 } 3564 3565 // If the Control modifier is held, try to interpret the key as a shortcut. 3566 if (event.getAction() == KeyEvent.ACTION_DOWN 3567 && event.isCtrlPressed() 3568 && event.getRepeatCount() == 0 3569 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3570 if (mView.dispatchKeyShortcutEvent(event)) { 3571 finishInputEvent(q, true); 3572 return; 3573 } 3574 } 3575 3576 // Apply the fallback event policy. 3577 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3578 finishInputEvent(q, true); 3579 return; 3580 } 3581 3582 // Handle automatic focus changes. 3583 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3584 int direction = 0; 3585 switch (event.getKeyCode()) { 3586 case KeyEvent.KEYCODE_DPAD_LEFT: 3587 if (event.hasNoModifiers()) { 3588 direction = View.FOCUS_LEFT; 3589 } 3590 break; 3591 case KeyEvent.KEYCODE_DPAD_RIGHT: 3592 if (event.hasNoModifiers()) { 3593 direction = View.FOCUS_RIGHT; 3594 } 3595 break; 3596 case KeyEvent.KEYCODE_DPAD_UP: 3597 if (event.hasNoModifiers()) { 3598 direction = View.FOCUS_UP; 3599 } 3600 break; 3601 case KeyEvent.KEYCODE_DPAD_DOWN: 3602 if (event.hasNoModifiers()) { 3603 direction = View.FOCUS_DOWN; 3604 } 3605 break; 3606 case KeyEvent.KEYCODE_TAB: 3607 if (event.hasNoModifiers()) { 3608 direction = View.FOCUS_FORWARD; 3609 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3610 direction = View.FOCUS_BACKWARD; 3611 } 3612 break; 3613 } 3614 if (direction != 0) { 3615 View focused = mView.findFocus(); 3616 if (focused != null) { 3617 View v = focused.focusSearch(direction); 3618 if (v != null && v != focused) { 3619 // do the math the get the interesting rect 3620 // of previous focused into the coord system of 3621 // newly focused view 3622 focused.getFocusedRect(mTempRect); 3623 if (mView instanceof ViewGroup) { 3624 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3625 focused, mTempRect); 3626 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3627 v, mTempRect); 3628 } 3629 if (v.requestFocus(direction, mTempRect)) { 3630 playSoundEffect(SoundEffectConstants 3631 .getContantForFocusDirection(direction)); 3632 finishInputEvent(q, true); 3633 return; 3634 } 3635 } 3636 3637 // Give the focused view a last chance to handle the dpad key. 3638 if (mView.dispatchUnhandledMove(focused, direction)) { 3639 finishInputEvent(q, true); 3640 return; 3641 } 3642 } 3643 } 3644 } 3645 3646 // Key was unhandled. 3647 finishInputEvent(q, false); 3648 } 3649 3650 /* drag/drop */ 3651 void setLocalDragState(Object obj) { 3652 mLocalDragState = obj; 3653 } 3654 3655 private void handleDragEvent(DragEvent event) { 3656 // From the root, only drag start/end/location are dispatched. entered/exited 3657 // are determined and dispatched by the viewgroup hierarchy, who then report 3658 // that back here for ultimate reporting back to the framework. 3659 if (mView != null && mAdded) { 3660 final int what = event.mAction; 3661 3662 if (what == DragEvent.ACTION_DRAG_EXITED) { 3663 // A direct EXITED event means that the window manager knows we've just crossed 3664 // a window boundary, so the current drag target within this one must have 3665 // just been exited. Send it the usual notifications and then we're done 3666 // for now. 3667 mView.dispatchDragEvent(event); 3668 } else { 3669 // Cache the drag description when the operation starts, then fill it in 3670 // on subsequent calls as a convenience 3671 if (what == DragEvent.ACTION_DRAG_STARTED) { 3672 mCurrentDragView = null; // Start the current-recipient tracking 3673 mDragDescription = event.mClipDescription; 3674 } else { 3675 event.mClipDescription = mDragDescription; 3676 } 3677 3678 // For events with a [screen] location, translate into window coordinates 3679 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 3680 mDragPoint.set(event.mX, event.mY); 3681 if (mTranslator != null) { 3682 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 3683 } 3684 3685 if (mCurScrollY != 0) { 3686 mDragPoint.offset(0, mCurScrollY); 3687 } 3688 3689 event.mX = mDragPoint.x; 3690 event.mY = mDragPoint.y; 3691 } 3692 3693 // Remember who the current drag target is pre-dispatch 3694 final View prevDragView = mCurrentDragView; 3695 3696 // Now dispatch the drag/drop event 3697 boolean result = mView.dispatchDragEvent(event); 3698 3699 // If we changed apparent drag target, tell the OS about it 3700 if (prevDragView != mCurrentDragView) { 3701 try { 3702 if (prevDragView != null) { 3703 sWindowSession.dragRecipientExited(mWindow); 3704 } 3705 if (mCurrentDragView != null) { 3706 sWindowSession.dragRecipientEntered(mWindow); 3707 } 3708 } catch (RemoteException e) { 3709 Slog.e(TAG, "Unable to note drag target change"); 3710 } 3711 } 3712 3713 // Report the drop result when we're done 3714 if (what == DragEvent.ACTION_DROP) { 3715 mDragDescription = null; 3716 try { 3717 Log.i(TAG, "Reporting drop result: " + result); 3718 sWindowSession.reportDropResult(mWindow, result); 3719 } catch (RemoteException e) { 3720 Log.e(TAG, "Unable to report drop result"); 3721 } 3722 } 3723 3724 // When the drag operation ends, release any local state object 3725 // that may have been in use 3726 if (what == DragEvent.ACTION_DRAG_ENDED) { 3727 setLocalDragState(null); 3728 } 3729 } 3730 } 3731 event.recycle(); 3732 } 3733 3734 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 3735 if (mSeq != args.seq) { 3736 // The sequence has changed, so we need to update our value and make 3737 // sure to do a traversal afterward so the window manager is given our 3738 // most recent data. 3739 mSeq = args.seq; 3740 mAttachInfo.mForceReportNewAttributes = true; 3741 scheduleTraversals(); 3742 } 3743 if (mView == null) return; 3744 if (args.localChanges != 0) { 3745 if (mAttachInfo != null) { 3746 mAttachInfo.mRecomputeGlobalAttributes = true; 3747 } 3748 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 3749 scheduleTraversals(); 3750 } 3751 mView.dispatchSystemUiVisibilityChanged(args.globalVisibility); 3752 } 3753 3754 public void handleDispatchDoneAnimating() { 3755 if (mWindowsAnimating) { 3756 mWindowsAnimating = false; 3757 if (!mDirty.isEmpty() || mIsAnimating) { 3758 scheduleTraversals(); 3759 } 3760 } 3761 } 3762 3763 public void getLastTouchPoint(Point outLocation) { 3764 outLocation.x = (int) mLastTouchPoint.x; 3765 outLocation.y = (int) mLastTouchPoint.y; 3766 } 3767 3768 public void setDragFocus(View newDragTarget) { 3769 if (mCurrentDragView != newDragTarget) { 3770 mCurrentDragView = newDragTarget; 3771 } 3772 } 3773 3774 private AudioManager getAudioManager() { 3775 if (mView == null) { 3776 throw new IllegalStateException("getAudioManager called when there is no mView"); 3777 } 3778 if (mAudioManager == null) { 3779 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 3780 } 3781 return mAudioManager; 3782 } 3783 3784 public AccessibilityInteractionController getAccessibilityInteractionController() { 3785 if (mView == null) { 3786 throw new IllegalStateException("getAccessibilityInteractionController" 3787 + " called when there is no mView"); 3788 } 3789 if (mAccessibilityInteractionController == null) { 3790 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 3791 } 3792 return mAccessibilityInteractionController; 3793 } 3794 3795 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 3796 boolean insetsPending) throws RemoteException { 3797 3798 float appScale = mAttachInfo.mApplicationScale; 3799 boolean restore = false; 3800 if (params != null && mTranslator != null) { 3801 restore = true; 3802 params.backup(); 3803 mTranslator.translateWindowLayout(params); 3804 } 3805 if (params != null) { 3806 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 3807 } 3808 mPendingConfiguration.seq = 0; 3809 //Log.d(TAG, ">>>>>> CALLING relayout"); 3810 if (params != null && mOrigWindowType != params.type) { 3811 // For compatibility with old apps, don't crash here. 3812 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 3813 Slog.w(TAG, "Window type can not be changed after " 3814 + "the window is added; ignoring change of " + mView); 3815 params.type = mOrigWindowType; 3816 } 3817 } 3818 int relayoutResult = sWindowSession.relayout( 3819 mWindow, mSeq, params, 3820 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 3821 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 3822 viewVisibility, insetsPending ? WindowManagerImpl.RELAYOUT_INSETS_PENDING : 0, 3823 mWinFrame, mPendingContentInsets, mPendingVisibleInsets, 3824 mPendingConfiguration, mSurface); 3825 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 3826 if (restore) { 3827 params.restore(); 3828 } 3829 3830 if (mTranslator != null) { 3831 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 3832 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 3833 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 3834 } 3835 return relayoutResult; 3836 } 3837 3838 /** 3839 * {@inheritDoc} 3840 */ 3841 public void playSoundEffect(int effectId) { 3842 checkThread(); 3843 3844 try { 3845 final AudioManager audioManager = getAudioManager(); 3846 3847 switch (effectId) { 3848 case SoundEffectConstants.CLICK: 3849 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 3850 return; 3851 case SoundEffectConstants.NAVIGATION_DOWN: 3852 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 3853 return; 3854 case SoundEffectConstants.NAVIGATION_LEFT: 3855 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 3856 return; 3857 case SoundEffectConstants.NAVIGATION_RIGHT: 3858 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 3859 return; 3860 case SoundEffectConstants.NAVIGATION_UP: 3861 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 3862 return; 3863 default: 3864 throw new IllegalArgumentException("unknown effect id " + effectId + 3865 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 3866 } 3867 } catch (IllegalStateException e) { 3868 // Exception thrown by getAudioManager() when mView is null 3869 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 3870 e.printStackTrace(); 3871 } 3872 } 3873 3874 /** 3875 * {@inheritDoc} 3876 */ 3877 public boolean performHapticFeedback(int effectId, boolean always) { 3878 try { 3879 return sWindowSession.performHapticFeedback(mWindow, effectId, always); 3880 } catch (RemoteException e) { 3881 return false; 3882 } 3883 } 3884 3885 /** 3886 * {@inheritDoc} 3887 */ 3888 public View focusSearch(View focused, int direction) { 3889 checkThread(); 3890 if (!(mView instanceof ViewGroup)) { 3891 return null; 3892 } 3893 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 3894 } 3895 3896 public void debug() { 3897 mView.debug(); 3898 } 3899 3900 public void dumpGfxInfo(int[] info) { 3901 if (mView != null) { 3902 getGfxInfo(mView, info); 3903 } else { 3904 info[0] = info[1] = 0; 3905 } 3906 } 3907 3908 private static void getGfxInfo(View view, int[] info) { 3909 DisplayList displayList = view.mDisplayList; 3910 info[0]++; 3911 if (displayList != null) { 3912 info[1] += displayList.getSize(); 3913 } 3914 3915 if (view instanceof ViewGroup) { 3916 ViewGroup group = (ViewGroup) view; 3917 3918 int count = group.getChildCount(); 3919 for (int i = 0; i < count; i++) { 3920 getGfxInfo(group.getChildAt(i), info); 3921 } 3922 } 3923 } 3924 3925 public void die(boolean immediate) { 3926 if (immediate) { 3927 doDie(); 3928 } else { 3929 destroyHardwareRenderer(); 3930 mHandler.sendEmptyMessage(MSG_DIE); 3931 } 3932 } 3933 3934 void doDie() { 3935 checkThread(); 3936 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 3937 synchronized (this) { 3938 if (mAdded) { 3939 dispatchDetachedFromWindow(); 3940 } 3941 3942 if (mAdded && !mFirst) { 3943 destroyHardwareRenderer(); 3944 3945 if (mView != null) { 3946 int viewVisibility = mView.getVisibility(); 3947 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 3948 if (mWindowAttributesChanged || viewVisibilityChanged) { 3949 // If layout params have been changed, first give them 3950 // to the window manager to make sure it has the correct 3951 // animation info. 3952 try { 3953 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 3954 & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 3955 sWindowSession.finishDrawing(mWindow); 3956 } 3957 } catch (RemoteException e) { 3958 } 3959 } 3960 3961 mSurface.release(); 3962 } 3963 } 3964 3965 mAdded = false; 3966 } 3967 } 3968 3969 public void requestUpdateConfiguration(Configuration config) { 3970 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 3971 mHandler.sendMessage(msg); 3972 } 3973 3974 private void destroyHardwareRenderer() { 3975 AttachInfo attachInfo = mAttachInfo; 3976 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 3977 3978 if (hardwareRenderer != null) { 3979 if (mView != null) { 3980 hardwareRenderer.destroyHardwareResources(mView); 3981 } 3982 hardwareRenderer.destroy(true); 3983 hardwareRenderer.setRequested(false); 3984 3985 attachInfo.mHardwareRenderer = null; 3986 attachInfo.mHardwareAccelerated = false; 3987 } 3988 } 3989 3990 void dispatchImeFinishedEvent(int seq, boolean handled) { 3991 Message msg = mHandler.obtainMessage(MSG_IME_FINISHED_EVENT); 3992 msg.arg1 = seq; 3993 msg.arg2 = handled ? 1 : 0; 3994 msg.setAsynchronous(true); 3995 mHandler.sendMessage(msg); 3996 } 3997 3998 public void dispatchFinishInputConnection(InputConnection connection) { 3999 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 4000 mHandler.sendMessage(msg); 4001 } 4002 4003 public void dispatchResized(int w, int h, Rect coveredInsets, 4004 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 4005 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": w=" + w 4006 + " h=" + h + " coveredInsets=" + coveredInsets.toShortString() 4007 + " visibleInsets=" + visibleInsets.toShortString() 4008 + " reportDraw=" + reportDraw); 4009 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT :MSG_RESIZED); 4010 if (mTranslator != null) { 4011 mTranslator.translateRectInScreenToAppWindow(coveredInsets); 4012 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 4013 w *= mTranslator.applicationInvertedScale; 4014 h *= mTranslator.applicationInvertedScale; 4015 } 4016 msg.arg1 = w; 4017 msg.arg2 = h; 4018 ResizedInfo ri = new ResizedInfo(); 4019 ri.coveredInsets = new Rect(coveredInsets); 4020 ri.visibleInsets = new Rect(visibleInsets); 4021 ri.newConfig = newConfig; 4022 msg.obj = ri; 4023 mHandler.sendMessage(msg); 4024 } 4025 4026 /** 4027 * Represents a pending input event that is waiting in a queue. 4028 * 4029 * Input events are processed in serial order by the timestamp specified by 4030 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 4031 * one input event to the application at a time and waits for the application 4032 * to finish handling it before delivering the next one. 4033 * 4034 * However, because the application or IME can synthesize and inject multiple 4035 * key events at a time without going through the input dispatcher, we end up 4036 * needing a queue on the application's side. 4037 */ 4038 private static final class QueuedInputEvent { 4039 public static final int FLAG_DELIVER_POST_IME = 1; 4040 4041 public QueuedInputEvent mNext; 4042 4043 public InputEvent mEvent; 4044 public InputEventReceiver mReceiver; 4045 public int mFlags; 4046 4047 // Used for latency calculations. 4048 public long mReceiveTimeNanos; 4049 public long mDeliverTimeNanos; 4050 public long mDeliverPostImeTimeNanos; 4051 } 4052 4053 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 4054 InputEventReceiver receiver, int flags) { 4055 QueuedInputEvent q = mQueuedInputEventPool; 4056 if (q != null) { 4057 mQueuedInputEventPoolSize -= 1; 4058 mQueuedInputEventPool = q.mNext; 4059 q.mNext = null; 4060 } else { 4061 q = new QueuedInputEvent(); 4062 } 4063 4064 q.mEvent = event; 4065 q.mReceiver = receiver; 4066 q.mFlags = flags; 4067 return q; 4068 } 4069 4070 private void recycleQueuedInputEvent(QueuedInputEvent q) { 4071 q.mEvent = null; 4072 q.mReceiver = null; 4073 4074 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 4075 mQueuedInputEventPoolSize += 1; 4076 q.mNext = mQueuedInputEventPool; 4077 mQueuedInputEventPool = q; 4078 } 4079 } 4080 4081 void enqueueInputEvent(InputEvent event) { 4082 enqueueInputEvent(event, null, 0, false); 4083 } 4084 4085 void enqueueInputEvent(InputEvent event, 4086 InputEventReceiver receiver, int flags, boolean processImmediately) { 4087 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 4088 4089 if (ViewDebug.DEBUG_LATENCY) { 4090 q.mReceiveTimeNanos = System.nanoTime(); 4091 q.mDeliverTimeNanos = 0; 4092 q.mDeliverPostImeTimeNanos = 0; 4093 } 4094 4095 // Always enqueue the input event in order, regardless of its time stamp. 4096 // We do this because the application or the IME may inject key events 4097 // in response to touch events and we want to ensure that the injected keys 4098 // are processed in the order they were received and we cannot trust that 4099 // the time stamp of injected events are monotonic. 4100 QueuedInputEvent last = mFirstPendingInputEvent; 4101 if (last == null) { 4102 mFirstPendingInputEvent = q; 4103 } else { 4104 while (last.mNext != null) { 4105 last = last.mNext; 4106 } 4107 last.mNext = q; 4108 } 4109 4110 if (processImmediately) { 4111 doProcessInputEvents(); 4112 } else { 4113 scheduleProcessInputEvents(); 4114 } 4115 } 4116 4117 private void scheduleProcessInputEvents() { 4118 if (!mProcessInputEventsScheduled) { 4119 mProcessInputEventsScheduled = true; 4120 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 4121 msg.setAsynchronous(true); 4122 mHandler.sendMessage(msg); 4123 } 4124 } 4125 4126 void doProcessInputEvents() { 4127 while (mCurrentInputEvent == null && mFirstPendingInputEvent != null) { 4128 QueuedInputEvent q = mFirstPendingInputEvent; 4129 mFirstPendingInputEvent = q.mNext; 4130 q.mNext = null; 4131 mCurrentInputEvent = q; 4132 deliverInputEvent(q); 4133 } 4134 4135 // We are done processing all input events that we can process right now 4136 // so we can clear the pending flag immediately. 4137 if (mProcessInputEventsScheduled) { 4138 mProcessInputEventsScheduled = false; 4139 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 4140 } 4141 } 4142 4143 private void finishInputEvent(QueuedInputEvent q, boolean handled) { 4144 if (q != mCurrentInputEvent) { 4145 throw new IllegalStateException("finished input event out of order"); 4146 } 4147 4148 if (ViewDebug.DEBUG_LATENCY) { 4149 final long now = System.nanoTime(); 4150 final long eventTime = q.mEvent.getEventTimeNano(); 4151 final StringBuilder msg = new StringBuilder(); 4152 msg.append("Spent "); 4153 msg.append((now - q.mReceiveTimeNanos) * 0.000001f); 4154 msg.append("ms processing "); 4155 if (q.mEvent instanceof KeyEvent) { 4156 final KeyEvent keyEvent = (KeyEvent)q.mEvent; 4157 msg.append("key event, action="); 4158 msg.append(KeyEvent.actionToString(keyEvent.getAction())); 4159 } else { 4160 final MotionEvent motionEvent = (MotionEvent)q.mEvent; 4161 msg.append("motion event, action="); 4162 msg.append(MotionEvent.actionToString(motionEvent.getAction())); 4163 msg.append(", historySize="); 4164 msg.append(motionEvent.getHistorySize()); 4165 } 4166 msg.append(", handled="); 4167 msg.append(handled); 4168 msg.append(", received at +"); 4169 msg.append((q.mReceiveTimeNanos - eventTime) * 0.000001f); 4170 if (q.mDeliverTimeNanos != 0) { 4171 msg.append("ms, delivered at +"); 4172 msg.append((q.mDeliverTimeNanos - eventTime) * 0.000001f); 4173 } 4174 if (q.mDeliverPostImeTimeNanos != 0) { 4175 msg.append("ms, delivered post IME at +"); 4176 msg.append((q.mDeliverPostImeTimeNanos - eventTime) * 0.000001f); 4177 } 4178 msg.append("ms, finished at +"); 4179 msg.append((now - eventTime) * 0.000001f); 4180 msg.append("ms."); 4181 Log.d(ViewDebug.DEBUG_LATENCY_TAG, msg.toString()); 4182 } 4183 4184 if (q.mReceiver != null) { 4185 q.mReceiver.finishInputEvent(q.mEvent, handled); 4186 } else { 4187 q.mEvent.recycleIfNeededAfterDispatch(); 4188 } 4189 4190 recycleQueuedInputEvent(q); 4191 4192 mCurrentInputEvent = null; 4193 if (mFirstPendingInputEvent != null) { 4194 scheduleProcessInputEvents(); 4195 } 4196 } 4197 4198 void scheduleConsumeBatchedInput() { 4199 if (!mConsumeBatchedInputScheduled) { 4200 mConsumeBatchedInputScheduled = true; 4201 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 4202 mConsumedBatchedInputRunnable, null); 4203 } 4204 } 4205 4206 void unscheduleConsumeBatchedInput() { 4207 if (mConsumeBatchedInputScheduled) { 4208 mConsumeBatchedInputScheduled = false; 4209 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 4210 mConsumedBatchedInputRunnable, null); 4211 } 4212 } 4213 4214 void doConsumeBatchedInput(long frameTimeNanos) { 4215 if (mConsumeBatchedInputScheduled) { 4216 mConsumeBatchedInputScheduled = false; 4217 if (mInputEventReceiver != null) { 4218 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 4219 } 4220 doProcessInputEvents(); 4221 } 4222 } 4223 4224 final class TraversalRunnable implements Runnable { 4225 @Override 4226 public void run() { 4227 doTraversal(); 4228 } 4229 } 4230 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 4231 4232 final class WindowInputEventReceiver extends InputEventReceiver { 4233 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 4234 super(inputChannel, looper); 4235 } 4236 4237 @Override 4238 public void onInputEvent(InputEvent event) { 4239 enqueueInputEvent(event, this, 0, true); 4240 } 4241 4242 @Override 4243 public void onBatchedInputEventPending() { 4244 scheduleConsumeBatchedInput(); 4245 } 4246 4247 @Override 4248 public void dispose() { 4249 unscheduleConsumeBatchedInput(); 4250 super.dispose(); 4251 } 4252 } 4253 WindowInputEventReceiver mInputEventReceiver; 4254 4255 final class ConsumeBatchedInputRunnable implements Runnable { 4256 @Override 4257 public void run() { 4258 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 4259 } 4260 } 4261 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 4262 new ConsumeBatchedInputRunnable(); 4263 boolean mConsumeBatchedInputScheduled; 4264 4265 final class InvalidateOnAnimationRunnable implements Runnable { 4266 private boolean mPosted; 4267 private ArrayList<View> mViews = new ArrayList<View>(); 4268 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 4269 new ArrayList<AttachInfo.InvalidateInfo>(); 4270 private View[] mTempViews; 4271 private AttachInfo.InvalidateInfo[] mTempViewRects; 4272 4273 public void addView(View view) { 4274 synchronized (this) { 4275 mViews.add(view); 4276 postIfNeededLocked(); 4277 } 4278 } 4279 4280 public void addViewRect(AttachInfo.InvalidateInfo info) { 4281 synchronized (this) { 4282 mViewRects.add(info); 4283 postIfNeededLocked(); 4284 } 4285 } 4286 4287 public void removeView(View view) { 4288 synchronized (this) { 4289 mViews.remove(view); 4290 4291 for (int i = mViewRects.size(); i-- > 0; ) { 4292 AttachInfo.InvalidateInfo info = mViewRects.get(i); 4293 if (info.target == view) { 4294 mViewRects.remove(i); 4295 info.release(); 4296 } 4297 } 4298 4299 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 4300 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 4301 mPosted = false; 4302 } 4303 } 4304 } 4305 4306 @Override 4307 public void run() { 4308 final int viewCount; 4309 final int viewRectCount; 4310 synchronized (this) { 4311 mPosted = false; 4312 4313 viewCount = mViews.size(); 4314 if (viewCount != 0) { 4315 mTempViews = mViews.toArray(mTempViews != null 4316 ? mTempViews : new View[viewCount]); 4317 mViews.clear(); 4318 } 4319 4320 viewRectCount = mViewRects.size(); 4321 if (viewRectCount != 0) { 4322 mTempViewRects = mViewRects.toArray(mTempViewRects != null 4323 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 4324 mViewRects.clear(); 4325 } 4326 } 4327 4328 for (int i = 0; i < viewCount; i++) { 4329 mTempViews[i].invalidate(); 4330 } 4331 4332 for (int i = 0; i < viewRectCount; i++) { 4333 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 4334 info.target.invalidate(info.left, info.top, info.right, info.bottom); 4335 info.release(); 4336 } 4337 } 4338 4339 private void postIfNeededLocked() { 4340 if (!mPosted) { 4341 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 4342 mPosted = true; 4343 } 4344 } 4345 } 4346 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 4347 new InvalidateOnAnimationRunnable(); 4348 4349 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 4350 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 4351 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4352 } 4353 4354 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 4355 long delayMilliseconds) { 4356 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 4357 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4358 } 4359 4360 public void dispatchInvalidateOnAnimation(View view) { 4361 mInvalidateOnAnimationRunnable.addView(view); 4362 } 4363 4364 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 4365 mInvalidateOnAnimationRunnable.addViewRect(info); 4366 } 4367 4368 public void invalidateDisplayList(DisplayList displayList) { 4369 mDisplayLists.add(displayList); 4370 4371 mHandler.removeMessages(MSG_INVALIDATE_DISPLAY_LIST); 4372 Message msg = mHandler.obtainMessage(MSG_INVALIDATE_DISPLAY_LIST); 4373 mHandler.sendMessage(msg); 4374 } 4375 4376 public void cancelInvalidate(View view) { 4377 mHandler.removeMessages(MSG_INVALIDATE, view); 4378 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 4379 // them to the pool 4380 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 4381 mInvalidateOnAnimationRunnable.removeView(view); 4382 } 4383 4384 public void dispatchKey(KeyEvent event) { 4385 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 4386 msg.setAsynchronous(true); 4387 mHandler.sendMessage(msg); 4388 } 4389 4390 public void dispatchKeyFromIme(KeyEvent event) { 4391 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 4392 msg.setAsynchronous(true); 4393 mHandler.sendMessage(msg); 4394 } 4395 4396 public void dispatchUnhandledKey(KeyEvent event) { 4397 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 4398 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 4399 final int keyCode = event.getKeyCode(); 4400 final int metaState = event.getMetaState(); 4401 4402 KeyEvent fallbackEvent = null; 4403 synchronized (mFallbackAction) { 4404 // Check for fallback actions specified by the key character map. 4405 if (kcm.getFallbackAction(keyCode, metaState, mFallbackAction)) { 4406 int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 4407 fallbackEvent = KeyEvent.obtain( 4408 event.getDownTime(), event.getEventTime(), 4409 event.getAction(), mFallbackAction.keyCode, 4410 event.getRepeatCount(), mFallbackAction.metaState, 4411 event.getDeviceId(), event.getScanCode(), 4412 flags, event.getSource(), null); 4413 } 4414 } 4415 if (fallbackEvent != null) { 4416 dispatchKey(fallbackEvent); 4417 } 4418 } 4419 } 4420 4421 public void dispatchAppVisibility(boolean visible) { 4422 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 4423 msg.arg1 = visible ? 1 : 0; 4424 mHandler.sendMessage(msg); 4425 } 4426 4427 public void dispatchScreenStateChange(boolean on) { 4428 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 4429 msg.arg1 = on ? 1 : 0; 4430 mHandler.sendMessage(msg); 4431 } 4432 4433 public void dispatchGetNewSurface() { 4434 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 4435 mHandler.sendMessage(msg); 4436 } 4437 4438 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4439 Message msg = Message.obtain(); 4440 msg.what = MSG_WINDOW_FOCUS_CHANGED; 4441 msg.arg1 = hasFocus ? 1 : 0; 4442 msg.arg2 = inTouchMode ? 1 : 0; 4443 mHandler.sendMessage(msg); 4444 } 4445 4446 public void dispatchCloseSystemDialogs(String reason) { 4447 Message msg = Message.obtain(); 4448 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 4449 msg.obj = reason; 4450 mHandler.sendMessage(msg); 4451 } 4452 4453 public void dispatchDragEvent(DragEvent event) { 4454 final int what; 4455 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 4456 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 4457 mHandler.removeMessages(what); 4458 } else { 4459 what = MSG_DISPATCH_DRAG_EVENT; 4460 } 4461 Message msg = mHandler.obtainMessage(what, event); 4462 mHandler.sendMessage(msg); 4463 } 4464 4465 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4466 int localValue, int localChanges) { 4467 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 4468 args.seq = seq; 4469 args.globalVisibility = globalVisibility; 4470 args.localValue = localValue; 4471 args.localChanges = localChanges; 4472 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 4473 } 4474 4475 public void dispatchDoneAnimating() { 4476 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 4477 } 4478 4479 public void dispatchCheckFocus() { 4480 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 4481 // This will result in a call to checkFocus() below. 4482 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 4483 } 4484 } 4485 4486 /** 4487 * Post a callback to send a 4488 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4489 * This event is send at most once every 4490 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 4491 */ 4492 private void postSendWindowContentChangedCallback(View source) { 4493 if (mSendWindowContentChangedAccessibilityEvent == null) { 4494 mSendWindowContentChangedAccessibilityEvent = 4495 new SendWindowContentChangedAccessibilityEvent(); 4496 } 4497 View oldSource = mSendWindowContentChangedAccessibilityEvent.mSource; 4498 if (oldSource == null) { 4499 mSendWindowContentChangedAccessibilityEvent.mSource = source; 4500 mHandler.postDelayed(mSendWindowContentChangedAccessibilityEvent, 4501 ViewConfiguration.getSendRecurringAccessibilityEventsInterval()); 4502 } else { 4503 mSendWindowContentChangedAccessibilityEvent.mSource = 4504 getCommonPredecessor(oldSource, source); 4505 } 4506 } 4507 4508 /** 4509 * Remove a posted callback to send a 4510 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4511 */ 4512 private void removeSendWindowContentChangedCallback() { 4513 if (mSendWindowContentChangedAccessibilityEvent != null) { 4514 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 4515 } 4516 } 4517 4518 public boolean showContextMenuForChild(View originalView) { 4519 return false; 4520 } 4521 4522 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 4523 return null; 4524 } 4525 4526 public void createContextMenu(ContextMenu menu) { 4527 } 4528 4529 public void childDrawableStateChanged(View child) { 4530 } 4531 4532 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 4533 if (mView == null) { 4534 return false; 4535 } 4536 mAccessibilityManager.sendAccessibilityEvent(event); 4537 return true; 4538 } 4539 4540 @Override 4541 public void childAccessibilityStateChanged(View child) { 4542 postSendWindowContentChangedCallback(child); 4543 } 4544 4545 private View getCommonPredecessor(View first, View second) { 4546 if (mAttachInfo != null) { 4547 if (mTempHashSet == null) { 4548 mTempHashSet = new HashSet<View>(); 4549 } 4550 HashSet<View> seen = mTempHashSet; 4551 seen.clear(); 4552 View firstCurrent = first; 4553 while (firstCurrent != null) { 4554 seen.add(firstCurrent); 4555 ViewParent firstCurrentParent = firstCurrent.mParent; 4556 if (firstCurrentParent instanceof View) { 4557 firstCurrent = (View) firstCurrentParent; 4558 } else { 4559 firstCurrent = null; 4560 } 4561 } 4562 View secondCurrent = second; 4563 while (secondCurrent != null) { 4564 if (seen.contains(secondCurrent)) { 4565 seen.clear(); 4566 return secondCurrent; 4567 } 4568 ViewParent secondCurrentParent = secondCurrent.mParent; 4569 if (secondCurrentParent instanceof View) { 4570 secondCurrent = (View) secondCurrentParent; 4571 } else { 4572 secondCurrent = null; 4573 } 4574 } 4575 seen.clear(); 4576 } 4577 return null; 4578 } 4579 4580 void checkThread() { 4581 if (mThread != Thread.currentThread()) { 4582 throw new CalledFromWrongThreadException( 4583 "Only the original thread that created a view hierarchy can touch its views."); 4584 } 4585 } 4586 4587 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 4588 // ViewAncestor never intercepts touch event, so this can be a no-op 4589 } 4590 4591 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, 4592 boolean immediate) { 4593 return scrollToRectOrFocus(rectangle, immediate); 4594 } 4595 4596 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 4597 // Do nothing. 4598 } 4599 4600 class TakenSurfaceHolder extends BaseSurfaceHolder { 4601 @Override 4602 public boolean onAllowLockCanvas() { 4603 return mDrawingAllowed; 4604 } 4605 4606 @Override 4607 public void onRelayoutContainer() { 4608 // Not currently interesting -- from changing between fixed and layout size. 4609 } 4610 4611 public void setFormat(int format) { 4612 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 4613 } 4614 4615 public void setType(int type) { 4616 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 4617 } 4618 4619 @Override 4620 public void onUpdateSurface() { 4621 // We take care of format and type changes on our own. 4622 throw new IllegalStateException("Shouldn't be here"); 4623 } 4624 4625 public boolean isCreating() { 4626 return mIsCreating; 4627 } 4628 4629 @Override 4630 public void setFixedSize(int width, int height) { 4631 throw new UnsupportedOperationException( 4632 "Currently only support sizing from layout"); 4633 } 4634 4635 public void setKeepScreenOn(boolean screenOn) { 4636 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 4637 } 4638 } 4639 4640 static class InputMethodCallback extends IInputMethodCallback.Stub { 4641 private WeakReference<ViewRootImpl> mViewAncestor; 4642 4643 public InputMethodCallback(ViewRootImpl viewAncestor) { 4644 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4645 } 4646 4647 public void finishedEvent(int seq, boolean handled) { 4648 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4649 if (viewAncestor != null) { 4650 viewAncestor.dispatchImeFinishedEvent(seq, handled); 4651 } 4652 } 4653 4654 public void sessionCreated(IInputMethodSession session) { 4655 // Stub -- not for use in the client. 4656 } 4657 } 4658 4659 static class W extends IWindow.Stub { 4660 private final WeakReference<ViewRootImpl> mViewAncestor; 4661 4662 W(ViewRootImpl viewAncestor) { 4663 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4664 } 4665 4666 public void resized(int w, int h, Rect coveredInsets, Rect visibleInsets, 4667 boolean reportDraw, Configuration newConfig) { 4668 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4669 if (viewAncestor != null) { 4670 viewAncestor.dispatchResized(w, h, coveredInsets, visibleInsets, reportDraw, 4671 newConfig); 4672 } 4673 } 4674 4675 public void dispatchAppVisibility(boolean visible) { 4676 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4677 if (viewAncestor != null) { 4678 viewAncestor.dispatchAppVisibility(visible); 4679 } 4680 } 4681 4682 public void dispatchScreenState(boolean on) { 4683 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4684 if (viewAncestor != null) { 4685 viewAncestor.dispatchScreenStateChange(on); 4686 } 4687 } 4688 4689 public void dispatchGetNewSurface() { 4690 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4691 if (viewAncestor != null) { 4692 viewAncestor.dispatchGetNewSurface(); 4693 } 4694 } 4695 4696 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4697 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4698 if (viewAncestor != null) { 4699 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 4700 } 4701 } 4702 4703 private static int checkCallingPermission(String permission) { 4704 try { 4705 return ActivityManagerNative.getDefault().checkPermission( 4706 permission, Binder.getCallingPid(), Binder.getCallingUid()); 4707 } catch (RemoteException e) { 4708 return PackageManager.PERMISSION_DENIED; 4709 } 4710 } 4711 4712 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 4713 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4714 if (viewAncestor != null) { 4715 final View view = viewAncestor.mView; 4716 if (view != null) { 4717 if (checkCallingPermission(Manifest.permission.DUMP) != 4718 PackageManager.PERMISSION_GRANTED) { 4719 throw new SecurityException("Insufficient permissions to invoke" 4720 + " executeCommand() from pid=" + Binder.getCallingPid() 4721 + ", uid=" + Binder.getCallingUid()); 4722 } 4723 4724 OutputStream clientStream = null; 4725 try { 4726 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 4727 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 4728 } catch (IOException e) { 4729 e.printStackTrace(); 4730 } finally { 4731 if (clientStream != null) { 4732 try { 4733 clientStream.close(); 4734 } catch (IOException e) { 4735 e.printStackTrace(); 4736 } 4737 } 4738 } 4739 } 4740 } 4741 } 4742 4743 public void closeSystemDialogs(String reason) { 4744 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4745 if (viewAncestor != null) { 4746 viewAncestor.dispatchCloseSystemDialogs(reason); 4747 } 4748 } 4749 4750 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 4751 boolean sync) { 4752 if (sync) { 4753 try { 4754 sWindowSession.wallpaperOffsetsComplete(asBinder()); 4755 } catch (RemoteException e) { 4756 } 4757 } 4758 } 4759 4760 public void dispatchWallpaperCommand(String action, int x, int y, 4761 int z, Bundle extras, boolean sync) { 4762 if (sync) { 4763 try { 4764 sWindowSession.wallpaperCommandComplete(asBinder(), null); 4765 } catch (RemoteException e) { 4766 } 4767 } 4768 } 4769 4770 /* Drag/drop */ 4771 public void dispatchDragEvent(DragEvent event) { 4772 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4773 if (viewAncestor != null) { 4774 viewAncestor.dispatchDragEvent(event); 4775 } 4776 } 4777 4778 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4779 int localValue, int localChanges) { 4780 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4781 if (viewAncestor != null) { 4782 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 4783 localValue, localChanges); 4784 } 4785 } 4786 4787 public void doneAnimating() { 4788 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4789 if (viewAncestor != null) { 4790 viewAncestor.dispatchDoneAnimating(); 4791 } 4792 } 4793 } 4794 4795 /** 4796 * Maintains state information for a single trackball axis, generating 4797 * discrete (DPAD) movements based on raw trackball motion. 4798 */ 4799 static final class TrackballAxis { 4800 /** 4801 * The maximum amount of acceleration we will apply. 4802 */ 4803 static final float MAX_ACCELERATION = 20; 4804 4805 /** 4806 * The maximum amount of time (in milliseconds) between events in order 4807 * for us to consider the user to be doing fast trackball movements, 4808 * and thus apply an acceleration. 4809 */ 4810 static final long FAST_MOVE_TIME = 150; 4811 4812 /** 4813 * Scaling factor to the time (in milliseconds) between events to how 4814 * much to multiple/divide the current acceleration. When movement 4815 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4816 * FAST_MOVE_TIME it divides it. 4817 */ 4818 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4819 4820 float position; 4821 float absPosition; 4822 float acceleration = 1; 4823 long lastMoveTime = 0; 4824 int step; 4825 int dir; 4826 int nonAccelMovement; 4827 4828 void reset(int _step) { 4829 position = 0; 4830 acceleration = 1; 4831 lastMoveTime = 0; 4832 step = _step; 4833 dir = 0; 4834 } 4835 4836 /** 4837 * Add trackball movement into the state. If the direction of movement 4838 * has been reversed, the state is reset before adding the 4839 * movement (so that you don't have to compensate for any previously 4840 * collected movement before see the result of the movement in the 4841 * new direction). 4842 * 4843 * @return Returns the absolute value of the amount of movement 4844 * collected so far. 4845 */ 4846 float collect(float off, long time, String axis) { 4847 long normTime; 4848 if (off > 0) { 4849 normTime = (long)(off * FAST_MOVE_TIME); 4850 if (dir < 0) { 4851 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4852 position = 0; 4853 step = 0; 4854 acceleration = 1; 4855 lastMoveTime = 0; 4856 } 4857 dir = 1; 4858 } else if (off < 0) { 4859 normTime = (long)((-off) * FAST_MOVE_TIME); 4860 if (dir > 0) { 4861 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4862 position = 0; 4863 step = 0; 4864 acceleration = 1; 4865 lastMoveTime = 0; 4866 } 4867 dir = -1; 4868 } else { 4869 normTime = 0; 4870 } 4871 4872 // The number of milliseconds between each movement that is 4873 // considered "normal" and will not result in any acceleration 4874 // or deceleration, scaled by the offset we have here. 4875 if (normTime > 0) { 4876 long delta = time - lastMoveTime; 4877 lastMoveTime = time; 4878 float acc = acceleration; 4879 if (delta < normTime) { 4880 // The user is scrolling rapidly, so increase acceleration. 4881 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4882 if (scale > 1) acc *= scale; 4883 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4884 + off + " normTime=" + normTime + " delta=" + delta 4885 + " scale=" + scale + " acc=" + acc); 4886 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4887 } else { 4888 // The user is scrolling slowly, so decrease acceleration. 4889 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4890 if (scale > 1) acc /= scale; 4891 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4892 + off + " normTime=" + normTime + " delta=" + delta 4893 + " scale=" + scale + " acc=" + acc); 4894 acceleration = acc > 1 ? acc : 1; 4895 } 4896 } 4897 position += off; 4898 return (absPosition = Math.abs(position)); 4899 } 4900 4901 /** 4902 * Generate the number of discrete movement events appropriate for 4903 * the currently collected trackball movement. 4904 * 4905 * @param precision The minimum movement required to generate the 4906 * first discrete movement. 4907 * 4908 * @return Returns the number of discrete movements, either positive 4909 * or negative, or 0 if there is not enough trackball movement yet 4910 * for a discrete movement. 4911 */ 4912 int generate(float precision) { 4913 int movement = 0; 4914 nonAccelMovement = 0; 4915 do { 4916 final int dir = position >= 0 ? 1 : -1; 4917 switch (step) { 4918 // If we are going to execute the first step, then we want 4919 // to do this as soon as possible instead of waiting for 4920 // a full movement, in order to make things look responsive. 4921 case 0: 4922 if (absPosition < precision) { 4923 return movement; 4924 } 4925 movement += dir; 4926 nonAccelMovement += dir; 4927 step = 1; 4928 break; 4929 // If we have generated the first movement, then we need 4930 // to wait for the second complete trackball motion before 4931 // generating the second discrete movement. 4932 case 1: 4933 if (absPosition < 2) { 4934 return movement; 4935 } 4936 movement += dir; 4937 nonAccelMovement += dir; 4938 position += dir > 0 ? -2 : 2; 4939 absPosition = Math.abs(position); 4940 step = 2; 4941 break; 4942 // After the first two, we generate discrete movements 4943 // consistently with the trackball, applying an acceleration 4944 // if the trackball is moving quickly. This is a simple 4945 // acceleration on top of what we already compute based 4946 // on how quickly the wheel is being turned, to apply 4947 // a longer increasing acceleration to continuous movement 4948 // in one direction. 4949 default: 4950 if (absPosition < 1) { 4951 return movement; 4952 } 4953 movement += dir; 4954 position += dir >= 0 ? -1 : 1; 4955 absPosition = Math.abs(position); 4956 float acc = acceleration; 4957 acc *= 1.1f; 4958 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4959 break; 4960 } 4961 } while (true); 4962 } 4963 } 4964 4965 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 4966 public CalledFromWrongThreadException(String msg) { 4967 super(msg); 4968 } 4969 } 4970 4971 private SurfaceHolder mHolder = new SurfaceHolder() { 4972 // we only need a SurfaceHolder for opengl. it would be nice 4973 // to implement everything else though, especially the callback 4974 // support (opengl doesn't make use of it right now, but eventually 4975 // will). 4976 public Surface getSurface() { 4977 return mSurface; 4978 } 4979 4980 public boolean isCreating() { 4981 return false; 4982 } 4983 4984 public void addCallback(Callback callback) { 4985 } 4986 4987 public void removeCallback(Callback callback) { 4988 } 4989 4990 public void setFixedSize(int width, int height) { 4991 } 4992 4993 public void setSizeFromLayout() { 4994 } 4995 4996 public void setFormat(int format) { 4997 } 4998 4999 public void setType(int type) { 5000 } 5001 5002 public void setKeepScreenOn(boolean screenOn) { 5003 } 5004 5005 public Canvas lockCanvas() { 5006 return null; 5007 } 5008 5009 public Canvas lockCanvas(Rect dirty) { 5010 return null; 5011 } 5012 5013 public void unlockCanvasAndPost(Canvas canvas) { 5014 } 5015 public Rect getSurfaceFrame() { 5016 return null; 5017 } 5018 }; 5019 5020 static RunQueue getRunQueue() { 5021 RunQueue rq = sRunQueues.get(); 5022 if (rq != null) { 5023 return rq; 5024 } 5025 rq = new RunQueue(); 5026 sRunQueues.set(rq); 5027 return rq; 5028 } 5029 5030 /** 5031 * The run queue is used to enqueue pending work from Views when no Handler is 5032 * attached. The work is executed during the next call to performTraversals on 5033 * the thread. 5034 * @hide 5035 */ 5036 static final class RunQueue { 5037 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 5038 5039 void post(Runnable action) { 5040 postDelayed(action, 0); 5041 } 5042 5043 void postDelayed(Runnable action, long delayMillis) { 5044 HandlerAction handlerAction = new HandlerAction(); 5045 handlerAction.action = action; 5046 handlerAction.delay = delayMillis; 5047 5048 synchronized (mActions) { 5049 mActions.add(handlerAction); 5050 } 5051 } 5052 5053 void removeCallbacks(Runnable action) { 5054 final HandlerAction handlerAction = new HandlerAction(); 5055 handlerAction.action = action; 5056 5057 synchronized (mActions) { 5058 final ArrayList<HandlerAction> actions = mActions; 5059 5060 while (actions.remove(handlerAction)) { 5061 // Keep going 5062 } 5063 } 5064 } 5065 5066 void executeActions(Handler handler) { 5067 synchronized (mActions) { 5068 final ArrayList<HandlerAction> actions = mActions; 5069 final int count = actions.size(); 5070 5071 for (int i = 0; i < count; i++) { 5072 final HandlerAction handlerAction = actions.get(i); 5073 handler.postDelayed(handlerAction.action, handlerAction.delay); 5074 } 5075 5076 actions.clear(); 5077 } 5078 } 5079 5080 private static class HandlerAction { 5081 Runnable action; 5082 long delay; 5083 5084 @Override 5085 public boolean equals(Object o) { 5086 if (this == o) return true; 5087 if (o == null || getClass() != o.getClass()) return false; 5088 5089 HandlerAction that = (HandlerAction) o; 5090 return !(action != null ? !action.equals(that.action) : that.action != null); 5091 5092 } 5093 5094 @Override 5095 public int hashCode() { 5096 int result = action != null ? action.hashCode() : 0; 5097 result = 31 * result + (int) (delay ^ (delay >>> 32)); 5098 return result; 5099 } 5100 } 5101 } 5102 5103 /** 5104 * Class for managing the accessibility interaction connection 5105 * based on the global accessibility state. 5106 */ 5107 final class AccessibilityInteractionConnectionManager 5108 implements AccessibilityStateChangeListener { 5109 public void onAccessibilityStateChanged(boolean enabled) { 5110 if (enabled) { 5111 ensureConnection(); 5112 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 5113 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 5114 View focusedView = mView.findFocus(); 5115 if (focusedView != null && focusedView != mView) { 5116 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 5117 } 5118 } 5119 } else { 5120 ensureNoConnection(); 5121 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 5122 } 5123 } 5124 5125 public void ensureConnection() { 5126 if (mAttachInfo != null) { 5127 final boolean registered = 5128 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 5129 if (!registered) { 5130 mAttachInfo.mAccessibilityWindowId = 5131 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 5132 new AccessibilityInteractionConnection(ViewRootImpl.this)); 5133 } 5134 } 5135 } 5136 5137 public void ensureNoConnection() { 5138 final boolean registered = 5139 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 5140 if (registered) { 5141 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 5142 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 5143 } 5144 } 5145 } 5146 5147 /** 5148 * This class is an interface this ViewAncestor provides to the 5149 * AccessibilityManagerService to the latter can interact with 5150 * the view hierarchy in this ViewAncestor. 5151 */ 5152 static final class AccessibilityInteractionConnection 5153 extends IAccessibilityInteractionConnection.Stub { 5154 private final WeakReference<ViewRootImpl> mViewRootImpl; 5155 5156 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 5157 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 5158 } 5159 5160 @Override 5161 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 5162 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5163 int flags, int interrogatingPid, long interrogatingTid) { 5164 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5165 if (viewRootImpl != null && viewRootImpl.mView != null) { 5166 viewRootImpl.getAccessibilityInteractionController() 5167 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 5168 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5169 } else { 5170 // We cannot make the call and notify the caller so it does not wait. 5171 try { 5172 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 5173 } catch (RemoteException re) { 5174 /* best effort - ignore */ 5175 } 5176 } 5177 } 5178 5179 @Override 5180 public void performAccessibilityAction(long accessibilityNodeId, int action, 5181 Bundle arguments, int interactionId, 5182 IAccessibilityInteractionConnectionCallback callback, int flags, 5183 int interogatingPid, long interrogatingTid) { 5184 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5185 if (viewRootImpl != null && viewRootImpl.mView != null) { 5186 viewRootImpl.getAccessibilityInteractionController() 5187 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 5188 interactionId, callback, flags, interogatingPid, interrogatingTid); 5189 } else { 5190 // We cannot make the call and notify the caller so it does not wait. 5191 try { 5192 callback.setPerformAccessibilityActionResult(false, interactionId); 5193 } catch (RemoteException re) { 5194 /* best effort - ignore */ 5195 } 5196 } 5197 } 5198 5199 @Override 5200 public void findAccessibilityNodeInfoByViewId(long accessibilityNodeId, int viewId, 5201 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5202 int flags, int interrogatingPid, long interrogatingTid) { 5203 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5204 if (viewRootImpl != null && viewRootImpl.mView != null) { 5205 viewRootImpl.getAccessibilityInteractionController() 5206 .findAccessibilityNodeInfoByViewIdClientThread(accessibilityNodeId, viewId, 5207 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5208 } else { 5209 // We cannot make the call and notify the caller so it does not wait. 5210 try { 5211 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5212 } catch (RemoteException re) { 5213 /* best effort - ignore */ 5214 } 5215 } 5216 } 5217 5218 @Override 5219 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 5220 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5221 int flags, int interrogatingPid, long interrogatingTid) { 5222 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5223 if (viewRootImpl != null && viewRootImpl.mView != null) { 5224 viewRootImpl.getAccessibilityInteractionController() 5225 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 5226 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5227 } else { 5228 // We cannot make the call and notify the caller so it does not wait. 5229 try { 5230 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 5231 } catch (RemoteException re) { 5232 /* best effort - ignore */ 5233 } 5234 } 5235 } 5236 5237 @Override 5238 public void findFocus(long accessibilityNodeId, int interactionId, int focusType, 5239 IAccessibilityInteractionConnectionCallback callback, int flags, 5240 int interrogatingPid, long interrogatingTid) { 5241 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5242 if (viewRootImpl != null && viewRootImpl.mView != null) { 5243 viewRootImpl.getAccessibilityInteractionController() 5244 .findFocusClientThread(accessibilityNodeId, interactionId, focusType, 5245 callback, flags, interrogatingPid, interrogatingTid); 5246 } else { 5247 // We cannot make the call and notify the caller so it does not wait. 5248 try { 5249 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5250 } catch (RemoteException re) { 5251 /* best effort - ignore */ 5252 } 5253 } 5254 } 5255 5256 @Override 5257 public void focusSearch(long accessibilityNodeId, int interactionId, int direction, 5258 IAccessibilityInteractionConnectionCallback callback, int flags, 5259 int interrogatingPid, long interrogatingTid) { 5260 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5261 if (viewRootImpl != null && viewRootImpl.mView != null) { 5262 viewRootImpl.getAccessibilityInteractionController() 5263 .focusSearchClientThread(accessibilityNodeId, interactionId, direction, 5264 callback, flags, interrogatingPid, interrogatingTid); 5265 } else { 5266 // We cannot make the call and notify the caller so it does not wait. 5267 try { 5268 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5269 } catch (RemoteException re) { 5270 /* best effort - ignore */ 5271 } 5272 } 5273 } 5274 } 5275 5276 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 5277 public View mSource; 5278 5279 public void run() { 5280 if (mSource != null) { 5281 mSource.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 5282 mSource.resetAccessibilityStateChanged(); 5283 mSource = null; 5284 } 5285 } 5286 } 5287} 5288