/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.view;
import android.Manifest;
import android.animation.LayoutTransition;
import android.app.ActivityManagerNative;
import android.content.ClipDescription;
import android.content.ComponentCallbacks;
import android.content.ComponentCallbacks2;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.res.CompatibilityInfo;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.Point;
import android.graphics.PointF;
import android.graphics.PorterDuff;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Region;
import android.graphics.drawable.Drawable;
import android.media.AudioManager;
import android.os.Binder;
import android.os.Bundle;
import android.os.Debug;
import android.os.Handler;
import android.os.LatencyTimer;
import android.os.Looper;
import android.os.Message;
import android.os.ParcelFileDescriptor;
import android.os.PowerManager;
import android.os.Process;
import android.os.RemoteException;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.Trace;
import android.util.AndroidRuntimeException;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.Slog;
import android.util.TypedValue;
import android.view.View.AttachInfo;
import android.view.View.MeasureSpec;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;
import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener;
import android.view.accessibility.AccessibilityNodeInfo;
import android.view.accessibility.AccessibilityNodeProvider;
import android.view.accessibility.IAccessibilityInteractionConnection;
import android.view.accessibility.IAccessibilityInteractionConnectionCallback;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.view.animation.Interpolator;
import android.view.inputmethod.InputConnection;
import android.view.inputmethod.InputMethodManager;
import android.widget.Scroller;
import com.android.internal.R;
import com.android.internal.os.SomeArgs;
import com.android.internal.policy.PolicyManager;
import com.android.internal.view.BaseSurfaceHolder;
import com.android.internal.view.RootViewSurfaceTaker;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.HashSet;
/**
* The top of a view hierarchy, implementing the needed protocol between View
* and the WindowManager. This is for the most part an internal implementation
* detail of {@link WindowManagerGlobal}.
*
* {@hide}
*/
@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"})
public final class ViewRootImpl implements ViewParent,
View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks {
private static final String TAG = "ViewRootImpl";
private static final boolean DBG = false;
private static final boolean LOCAL_LOGV = false;
/** @noinspection PointlessBooleanExpression*/
private static final boolean DEBUG_DRAW = false || LOCAL_LOGV;
private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV;
private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV;
private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV;
private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV;
private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV;
private static final boolean DEBUG_IMF = false || LOCAL_LOGV;
private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV;
private static final boolean DEBUG_FPS = false;
private static final boolean USE_RENDER_THREAD = false;
/**
* Set this system property to true to force the view hierarchy to render
* at 60 Hz. This can be used to measure the potential framerate.
*/
private static final String PROPERTY_PROFILE_RENDERING = "viewancestor.profile_rendering";
private static final boolean MEASURE_LATENCY = false;
private static LatencyTimer lt;
/**
* Maximum time we allow the user to roll the trackball enough to generate
* a key event, before resetting the counters.
*/
static final int MAX_TRACKBALL_DELAY = 250;
static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>();
static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>();
static boolean sFirstDrawComplete = false;
static final ArrayList<ComponentCallbacks> sConfigCallbacks
= new ArrayList<ComponentCallbacks>();
private static boolean sUseRenderThread = false;
private static boolean sRenderThreadQueried = false;
private static final Object[] sRenderThreadQueryLock = new Object[0];
final IWindowSession mWindowSession;
final Display mDisplay;
long mLastTrackballTime = 0;
final TrackballAxis mTrackballAxisX = new TrackballAxis();
final TrackballAxis mTrackballAxisY = new TrackballAxis();
int mLastJoystickXDirection;
int mLastJoystickYDirection;
int mLastJoystickXKeyCode;
int mLastJoystickYKeyCode;
final int[] mTmpLocation = new int[2];
final TypedValue mTmpValue = new TypedValue();
final InputMethodCallback mInputMethodCallback;
final Thread mThread;
final WindowLeaked mLocation;
final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams();
final W mWindow;
final int mTargetSdkVersion;
int mSeq;
View mView;
View mFocusedView;
View mRealFocusedView; // this is not set to null in touch mode
View mOldFocusedView;
View mAccessibilityFocusedHost;
AccessibilityNodeInfo mAccessibilityFocusedVirtualView;
int mViewVisibility;
boolean mAppVisible = true;
int mOrigWindowType = -1;
// Set to true if the owner of this window is in the stopped state,
// so the window should no longer be active.
boolean mStopped = false;
boolean mLastInCompatMode = false;
SurfaceHolder.Callback2 mSurfaceHolderCallback;
BaseSurfaceHolder mSurfaceHolder;
boolean mIsCreating;
boolean mDrawingAllowed;
final Region mTransparentRegion;
final Region mPreviousTransparentRegion;
int mWidth;
int mHeight;
Rect mDirty;
final Rect mCurrentDirty = new Rect();
final Rect mPreviousDirty = new Rect();
boolean mIsAnimating;
CompatibilityInfo.Translator mTranslator;
final View.AttachInfo mAttachInfo;
InputChannel mInputChannel;
InputQueue.Callback mInputQueueCallback;
InputQueue mInputQueue;
FallbackEventHandler mFallbackEventHandler;
Choreographer mChoreographer;
final Rect mTempRect; // used in the transaction to not thrash the heap.
final Rect mVisRect; // used to retrieve visible rect of focused view.
boolean mTraversalScheduled;
int mTraversalBarrier;
boolean mWillDrawSoon;
/** Set to true while in performTraversals for detecting when die(true) is called from internal
* callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */
boolean mIsInTraversal;
boolean mFitSystemWindowsRequested;
boolean mLayoutRequested;
boolean mFirst;
boolean mReportNextDraw;
boolean mFullRedrawNeeded;
boolean mNewSurfaceNeeded;
boolean mHasHadWindowFocus;
boolean mLastWasImTarget;
boolean mWindowsAnimating;
boolean mIsDrawing;
int mLastSystemUiVisibility;
int mClientWindowLayoutFlags;
// Pool of queued input events.
private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10;
private QueuedInputEvent mQueuedInputEventPool;
private int mQueuedInputEventPoolSize;
// Input event queue.
QueuedInputEvent mFirstPendingInputEvent;
QueuedInputEvent mCurrentInputEvent;
boolean mProcessInputEventsScheduled;
boolean mWindowAttributesChanged = false;
int mWindowAttributesChangesFlag = 0;
// These can be accessed by any thread, must be protected with a lock.
// Surface can never be reassigned or cleared (use Surface.clear()).
private final Surface mSurface = new Surface();
boolean mAdded;
boolean mAddedTouchMode;
final CompatibilityInfoHolder mCompatibilityInfo;
// These are accessed by multiple threads.
final Rect mWinFrame; // frame given by window manager.
final Rect mPendingVisibleInsets = new Rect();
final Rect mPendingContentInsets = new Rect();
final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets
= new ViewTreeObserver.InternalInsetsInfo();
final Rect mFitSystemWindowsInsets = new Rect();
final Configuration mLastConfiguration = new Configuration();
final Configuration mPendingConfiguration = new Configuration();
boolean mScrollMayChange;
int mSoftInputMode;
View mLastScrolledFocus;
int mScrollY;
int mCurScrollY;
Scroller mScroller;
HardwareLayer mResizeBuffer;
long mResizeBufferStartTime;
int mResizeBufferDuration;
static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator();
private ArrayList<LayoutTransition> mPendingTransitions;
final ViewConfiguration mViewConfiguration;
/* Drag/drop */
ClipDescription mDragDescription;
View mCurrentDragView;
volatile Object mLocalDragState;
final PointF mDragPoint = new PointF();
final PointF mLastTouchPoint = new PointF();
private boolean mProfileRendering;
private Thread mRenderProfiler;
private volatile boolean mRenderProfilingEnabled;
// Variables to track frames per second, enabled via DEBUG_FPS flag
private long mFpsStartTime = -1;
private long mFpsPrevTime = -1;
private int mFpsNumFrames;
private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(24);
/**
* see {@link #playSoundEffect(int)}
*/
AudioManager mAudioManager;
final AccessibilityManager mAccessibilityManager;
AccessibilityInteractionController mAccessibilityInteractionController;
AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager;
SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent;
HashSet<View> mTempHashSet;
private final int mDensity;
private final int mNoncompatDensity;
/**
* Consistency verifier for debugging purposes.
*/
protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier =
InputEventConsistencyVerifier.isInstrumentationEnabled() ?
new InputEventConsistencyVerifier(this, 0) : null;
static final class SystemUiVisibilityInfo {
int seq;
int globalVisibility;
int localValue;
int localChanges;
}
public ViewRootImpl(Context context, Display display) {
super();
if (MEASURE_LATENCY) {
if (lt == null) {
lt = new LatencyTimer(100, 1000);
}
}
// Initialize the statics when this class is first instantiated. This is
// done here instead of in the static block because Zygote does not
// allow the spawning of threads.
mWindowSession = WindowManagerGlobal.getWindowSession(context.getMainLooper());
mDisplay = display;
CompatibilityInfoHolder cih = display.getCompatibilityInfo();
mCompatibilityInfo = cih != null ? cih : new CompatibilityInfoHolder();
mThread = Thread.currentThread();
mLocation = new WindowLeaked(null);
mLocation.fillInStackTrace();
mWidth = -1;
mHeight = -1;
mDirty = new Rect();
mTempRect = new Rect();
mVisRect = new Rect();
mWinFrame = new Rect();
mWindow = new W(this);
mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion;
mInputMethodCallback = new InputMethodCallback(this);
mViewVisibility = View.GONE;
mTransparentRegion = new Region();
mPreviousTransparentRegion = new Region();
mFirst = true; // true for the first time the view is added
mAdded = false;
mAccessibilityManager = AccessibilityManager.getInstance(context);
mAccessibilityInteractionConnectionManager =
new AccessibilityInteractionConnectionManager();
mAccessibilityManager.addAccessibilityStateChangeListener(
mAccessibilityInteractionConnectionManager);
mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this);
mViewConfiguration = ViewConfiguration.get(context);
mDensity = context.getResources().getDisplayMetrics().densityDpi;
mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi;
mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context);
mProfileRendering = Boolean.parseBoolean(
SystemProperties.get(PROPERTY_PROFILE_RENDERING, "false"));
mChoreographer = Choreographer.getInstance();
PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
mAttachInfo.mScreenOn = powerManager.isScreenOn();
loadSystemProperties();
}
/**
* @return True if the application requests the use of a separate render thread,
* false otherwise
*/
private static boolean isRenderThreadRequested(Context context) {
if (USE_RENDER_THREAD) {
synchronized (sRenderThreadQueryLock) {
if (!sRenderThreadQueried) {
final PackageManager packageManager = context.getPackageManager();
final String packageName = context.getApplicationInfo().packageName;
try {
ApplicationInfo applicationInfo = packageManager.getApplicationInfo(packageName,
PackageManager.GET_META_DATA);
if (applicationInfo.metaData != null) {
sUseRenderThread = applicationInfo.metaData.getBoolean(
"android.graphics.renderThread", false);
}
} catch (PackageManager.NameNotFoundException e) {
} finally {
sRenderThreadQueried = true;
}
}
return sUseRenderThread;
}
} else {
return false;
}
}
public static void addFirstDrawHandler(Runnable callback) {
synchronized (sFirstDrawHandlers) {
if (!sFirstDrawComplete) {
sFirstDrawHandlers.add(callback);
}
}
}
public static void addConfigCallback(ComponentCallbacks callback) {
synchronized (sConfigCallbacks) {
sConfigCallbacks.add(callback);
}
}
// FIXME for perf testing only
private boolean mProfile = false;
/**
* Call this to profile the next traversal call.
* FIXME for perf testing only. Remove eventually
*/
public void profile() {
mProfile = true;
}
/**
* Indicates whether we are in touch mode. Calling this method triggers an IPC
* call and should be avoided whenever possible.
*
* @return True, if the device is in touch mode, false otherwise.
*
* @hide
*/
static boolean isInTouchMode() {
IWindowSession windowSession = WindowManagerGlobal.peekWindowSession();
if (windowSession != null) {
try {
return windowSession.getInTouchMode();
} catch (RemoteException e) {
}
}
return false;
}
/**
* We have one child
*/
public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) {
synchronized (this) {
if (mView == null) {
mView = view;
mFallbackEventHandler.setView(view);
mWindowAttributes.copyFrom(attrs);
attrs = mWindowAttributes;
// Keep track of the actual window flags supplied by the client.
mClientWindowLayoutFlags = attrs.flags;
setAccessibilityFocus(null, null);
if (view instanceof RootViewSurfaceTaker) {
mSurfaceHolderCallback =
((RootViewSurfaceTaker)view).willYouTakeTheSurface();
if (mSurfaceHolderCallback != null) {
mSurfaceHolder = new TakenSurfaceHolder();
mSurfaceHolder.setFormat(PixelFormat.UNKNOWN);
}
}
CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get();
mTranslator = compatibilityInfo.getTranslator();
// If the application owns the surface, don't enable hardware acceleration
if (mSurfaceHolder == null) {
enableHardwareAcceleration(mView.getContext(), attrs);
}
boolean restore = false;
if (mTranslator != null) {
mSurface.setCompatibilityTranslator(mTranslator);
restore = true;
attrs.backup();
mTranslator.translateWindowLayout(attrs);
}
if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs);
if (!compatibilityInfo.supportsScreen()) {
attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW;
mLastInCompatMode = true;
}
mSoftInputMode = attrs.softInputMode;
mWindowAttributesChanged = true;
mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED;
mAttachInfo.mRootView = view;
mAttachInfo.mScalingRequired = mTranslator != null;
mAttachInfo.mApplicationScale =
mTranslator == null ? 1.0f : mTranslator.applicationScale;
if (panelParentView != null) {
mAttachInfo.mPanelParentWindowToken
= panelParentView.getApplicationWindowToken();
}
mAdded = true;
int res; /* = WindowManagerImpl.ADD_OKAY; */
// Schedule the first layout -before- adding to the window
// manager, to make sure we do the relayout before receiving
// any other events from the system.
requestLayout();
if ((mWindowAttributes.inputFeatures
& WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) {
mInputChannel = new InputChannel();
}
try {
mOrigWindowType = mWindowAttributes.type;
mAttachInfo.mRecomputeGlobalAttributes = true;
collectViewAttributes();
res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes,
getHostVisibility(), mDisplay.getDisplayId(),
mAttachInfo.mContentInsets, mInputChannel);
} catch (RemoteException e) {
mAdded = false;
mView = null;
mAttachInfo.mRootView = null;
mInputChannel = null;
mFallbackEventHandler.setView(null);
unscheduleTraversals();
setAccessibilityFocus(null, null);
throw new RuntimeException("Adding window failed", e);
} finally {
if (restore) {
attrs.restore();
}
}
if (mTranslator != null) {
mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets);
}
mPendingContentInsets.set(mAttachInfo.mContentInsets);
mPendingVisibleInsets.set(0, 0, 0, 0);
if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow);
if (res < WindowManagerGlobal.ADD_OKAY) {
mView = null;
mAttachInfo.mRootView = null;
mAdded = false;
mFallbackEventHandler.setView(null);
unscheduleTraversals();
setAccessibilityFocus(null, null);
switch (res) {
case WindowManagerGlobal.ADD_BAD_APP_TOKEN:
case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN:
throw new WindowManager.BadTokenException(
"Unable to add window -- token " + attrs.token
+ " is not valid; is your activity running?");
case WindowManagerGlobal.ADD_NOT_APP_TOKEN:
throw new WindowManager.BadTokenException(
"Unable to add window -- token " + attrs.token
+ " is not for an application");
case WindowManagerGlobal.ADD_APP_EXITING:
throw new WindowManager.BadTokenException(
"Unable to add window -- app for token " + attrs.token
+ " is exiting");
case WindowManagerGlobal.ADD_DUPLICATE_ADD:
throw new WindowManager.BadTokenException(
"Unable to add window -- window " + mWindow
+ " has already been added");
case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED:
// Silently ignore -- we would have just removed it
// right away, anyway.
return;
case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON:
throw new WindowManager.BadTokenException(
"Unable to add window " + mWindow +
" -- another window of this type already exists");
case WindowManagerGlobal.ADD_PERMISSION_DENIED:
throw new WindowManager.BadTokenException(
"Unable to add window " + mWindow +
" -- permission denied for this window type");
}
throw new RuntimeException(
"Unable to add window -- unknown error code " + res);
}
if (view instanceof RootViewSurfaceTaker) {
mInputQueueCallback =
((RootViewSurfaceTaker)view).willYouTakeTheInputQueue();
}
if (mInputChannel != null) {
if (mInputQueueCallback != null) {
mInputQueue = new InputQueue(mInputChannel);
mInputQueueCallback.onInputQueueCreated(mInputQueue);
} else {
mInputEventReceiver = new WindowInputEventReceiver(mInputChannel,
Looper.myLooper());
}
}
view.assignParent(this);
mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0;
mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0;
if (mAccessibilityManager.isEnabled()) {
mAccessibilityInteractionConnectionManager.ensureConnection();
}
if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
}
}
}
}
void destroyHardwareResources() {
if (mAttachInfo.mHardwareRenderer != null) {
if (mAttachInfo.mHardwareRenderer.isEnabled()) {
mAttachInfo.mHardwareRenderer.destroyLayers(mView);
}
mAttachInfo.mHardwareRenderer.destroy(false);
}
}
void terminateHardwareResources() {
if (mAttachInfo.mHardwareRenderer != null) {
mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView);
mAttachInfo.mHardwareRenderer.destroy(false);
}
}
void destroyHardwareLayers() {
if (mThread != Thread.currentThread()) {
if (mAttachInfo.mHardwareRenderer != null &&
mAttachInfo.mHardwareRenderer.isEnabled()) {
HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE);
}
} else {
if (mAttachInfo.mHardwareRenderer != null &&
mAttachInfo.mHardwareRenderer.isEnabled()) {
mAttachInfo.mHardwareRenderer.destroyLayers(mView);
}
}
}
void pushHardwareLayerUpdate(HardwareLayer layer) {
if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) {
mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer);
}
}
public boolean attachFunctor(int functor) {
//noinspection SimplifiableIfStatement
if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) {
return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor);
}
return false;
}
public void detachFunctor(int functor) {
if (mAttachInfo.mHardwareRenderer != null) {
mAttachInfo.mHardwareRenderer.detachFunctor(functor);
}
}
private void enableHardwareAcceleration(Context context, WindowManager.LayoutParams attrs) {
mAttachInfo.mHardwareAccelerated = false;
mAttachInfo.mHardwareAccelerationRequested = false;
// Don't enable hardware acceleration when the application is in compatibility mode
if (mTranslator != null) return;
// Try to enable hardware acceleration if requested
final boolean hardwareAccelerated =
(attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0;
if (hardwareAccelerated) {
if (!HardwareRenderer.isAvailable()) {
return;
}
// Persistent processes (including the system) should not do
// accelerated rendering on low-end devices. In that case,
// sRendererDisabled will be set. In addition, the system process
// itself should never do accelerated rendering. In that case, both
// sRendererDisabled and sSystemRendererDisabled are set. When
// sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED
// can be used by code on the system process to escape that and enable
// HW accelerated drawing. (This is basically for the lock screen.)
final boolean fakeHwAccelerated = (attrs.privateFlags &
WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0;
final boolean forceHwAccelerated = (attrs.privateFlags &
WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0;
if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled
&& forceHwAccelerated)) {
// Don't enable hardware acceleration when we're not on the main thread
if (!HardwareRenderer.sSystemRendererDisabled &&
Looper.getMainLooper() != Looper.myLooper()) {
Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware "
+ "acceleration outside of the main thread, aborting");
return;
}
final boolean renderThread = isRenderThreadRequested(context);
if (renderThread) {
Log.i(HardwareRenderer.LOG_TAG, "Render threat initiated");
}
if (mAttachInfo.mHardwareRenderer != null) {
mAttachInfo.mHardwareRenderer.destroy(true);
}
final boolean translucent = attrs.format != PixelFormat.OPAQUE;
mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent);
mAttachInfo.mHardwareAccelerated = mAttachInfo.mHardwareAccelerationRequested
= mAttachInfo.mHardwareRenderer != null;
} else if (fakeHwAccelerated) {
// The window had wanted to use hardware acceleration, but this
// is not allowed in its process. By setting this flag, it can
// still render as if it was accelerated. This is basically for
// the preview windows the window manager shows for launching
// applications, so they will look more like the app being launched.
mAttachInfo.mHardwareAccelerationRequested = true;
}
}
}
public View getView() {
return mView;
}
final WindowLeaked getLocation() {
return mLocation;
}
void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) {
synchronized (this) {
int oldSoftInputMode = mWindowAttributes.softInputMode;
// Keep track of the actual window flags supplied by the client.
mClientWindowLayoutFlags = attrs.flags;
// preserve compatible window flag if exists.
int compatibleWindowFlag =
mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW;
// transfer over system UI visibility values as they carry current state.
attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility;
attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility;
mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs);
mWindowAttributes.flags |= compatibleWindowFlag;
applyKeepScreenOnFlag(mWindowAttributes);
if (newView) {
mSoftInputMode = attrs.softInputMode;
requestLayout();
}
// Don't lose the mode we last auto-computed.
if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST)
== WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) {
mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode
& ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST)
| (oldSoftInputMode
& WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST);
}
mWindowAttributesChanged = true;
scheduleTraversals();
}
}
void handleAppVisibility(boolean visible) {
if (mAppVisible != visible) {
mAppVisible = visible;
scheduleTraversals();
}
}
void handleGetNewSurface() {
mNewSurfaceNeeded = true;
mFullRedrawNeeded = true;
scheduleTraversals();
}
void handleScreenStateChange(boolean on) {
if (on != mAttachInfo.mScreenOn) {
mAttachInfo.mScreenOn = on;
if (mView != null) {
mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF);
}
if (on) {
mFullRedrawNeeded = true;
scheduleTraversals();
}
}
}
/**
* {@inheritDoc}
*/
public void requestFitSystemWindows() {
checkThread();
mFitSystemWindowsRequested = true;
scheduleTraversals();
}
/**
* {@inheritDoc}
*/
public void requestLayout() {
checkThread();
mLayoutRequested = true;
scheduleTraversals();
}
/**
* {@inheritDoc}
*/
public boolean isLayoutRequested() {
return mLayoutRequested;
}
void invalidate() {
mDirty.set(0, 0, mWidth, mHeight);
scheduleTraversals();
}
void invalidateWorld(View view) {
view.invalidate();
if (view instanceof ViewGroup) {
ViewGroup parent = (ViewGroup) view;
for (int i = 0; i < parent.getChildCount(); i++) {
invalidateWorld(parent.getChildAt(i));
}
}
}
public void invalidateChild(View child, Rect dirty) {
invalidateChildInParent(null, dirty);
}
public ViewParent invalidateChildInParent(int[] location, Rect dirty) {
checkThread();
if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty);
if (dirty == null) {
invalidate();
return null;
} else if (dirty.isEmpty()) {
return null;
}
if (mCurScrollY != 0 || mTranslator != null) {
mTempRect.set(dirty);
dirty = mTempRect;
if (mCurScrollY != 0) {
dirty.offset(0, -mCurScrollY);
}
if (mTranslator != null) {
mTranslator.translateRectInAppWindowToScreen(dirty);
}
if (mAttachInfo.mScalingRequired) {
dirty.inset(-1, -1);
}
}
final Rect localDirty = mDirty;
if (!localDirty.isEmpty() && !localDirty.contains(dirty)) {
mAttachInfo.mSetIgnoreDirtyState = true;
mAttachInfo.mIgnoreDirtyState = true;
}
// Add the new dirty rect to the current one
localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom);
// Intersect with the bounds of the window to skip
// updates that lie outside of the visible region
final float appScale = mAttachInfo.mApplicationScale;
localDirty.intersect(0, 0,
(int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f));
if (!mWillDrawSoon) {
scheduleTraversals();
}
return null;
}
void setStopped(boolean stopped) {
if (mStopped != stopped) {
mStopped = stopped;
if (!stopped) {
scheduleTraversals();
}
}
}
public ViewParent getParent() {
return null;
}
public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) {
if (child != mView) {
throw new RuntimeException("child is not mine, honest!");
}
// Note: don't apply scroll offset, because we want to know its
// visibility in the virtual canvas being given to the view hierarchy.
return r.intersect(0, 0, mWidth, mHeight);
}
public void bringChildToFront(View child) {
}
int getHostVisibility() {
return mAppVisible ? mView.getVisibility() : View.GONE;
}
void disposeResizeBuffer() {
if (mResizeBuffer != null) {
mResizeBuffer.destroy();
mResizeBuffer = null;
}
}
/**
* Add LayoutTransition to the list of transitions to be started in the next traversal.
* This list will be cleared after the transitions on the list are start()'ed. These
* transitionsa re added by LayoutTransition itself when it sets up animations. The setup
* happens during the layout phase of traversal, which we want to complete before any of the
* animations are started (because those animations may side-effect properties that layout
* depends upon, like the bounding rectangles of the affected views). So we add the transition
* to the list and it is started just prior to starting the drawing phase of traversal.
*
* @param transition The LayoutTransition to be started on the next traversal.
*
* @hide
*/
public void requestTransitionStart(LayoutTransition transition) {
if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) {
if (mPendingTransitions == null) {
mPendingTransitions = new ArrayList<LayoutTransition>();
}
mPendingTransitions.add(transition);
}
}
void scheduleTraversals() {
if (!mTraversalScheduled) {
mTraversalScheduled = true;
mTraversalBarrier = mHandler.getLooper().postSyncBarrier();
mChoreographer.postCallback(
Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null);
scheduleConsumeBatchedInput();
}
}
void unscheduleTraversals() {
if (mTraversalScheduled) {
mTraversalScheduled = false;
mHandler.getLooper().removeSyncBarrier(mTraversalBarrier);
mChoreographer.removeCallbacks(
Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null);
}
}
void doTraversal() {
if (mTraversalScheduled) {
mTraversalScheduled = false;
mHandler.getLooper().removeSyncBarrier(mTraversalBarrier);
if (mProfile) {
Debug.startMethodTracing("ViewAncestor");
}
Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals");
try {
performTraversals();
} finally {
Trace.traceEnd(Trace.TRACE_TAG_VIEW);
}
if (mProfile) {
Debug.stopMethodTracing();
mProfile = false;
}
}
}
private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) {
// Update window's global keep screen on flag: if a view has requested
// that the screen be kept on, then it is always set; otherwise, it is
// set to whatever the client last requested for the global state.
if (mAttachInfo.mKeepScreenOn) {
params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
} else {
params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
| (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
}
}
private boolean collectViewAttributes() {
final View.AttachInfo attachInfo = mAttachInfo;
if (attachInfo.mRecomputeGlobalAttributes) {
//Log.i(TAG, "Computing view hierarchy attributes!");
attachInfo.mRecomputeGlobalAttributes = false;
boolean oldScreenOn = attachInfo.mKeepScreenOn;
attachInfo.mKeepScreenOn = false;
attachInfo.mSystemUiVisibility = 0;
attachInfo.mHasSystemUiListeners = false;
mView.dispatchCollectViewAttributes(attachInfo, 0);
attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility;
WindowManager.LayoutParams params = mWindowAttributes;
if (attachInfo.mKeepScreenOn != oldScreenOn
|| attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility
|| attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) {
applyKeepScreenOnFlag(params);
params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility;
params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners;
mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility);
return true;
}
}
return false;
}
private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp,
final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) {
int childWidthMeasureSpec;
int childHeightMeasureSpec;
boolean windowSizeMayChange = false;
if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG,
"Measuring " + host + " in display " + desiredWindowWidth
+ "x" + desiredWindowHeight + "...");
boolean goodMeasure = false;
if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) {
// On large screens, we don't want to allow dialogs to just
// stretch to fill the entire width of the screen to display
// one line of text. First try doing the layout at a smaller
// size to see if it will fit.
final DisplayMetrics packageMetrics = res.getDisplayMetrics();
res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true);
int baseSize = 0;
if (mTmpValue.type == TypedValue.TYPE_DIMENSION) {
baseSize = (int)mTmpValue.getDimension(packageMetrics);
}
if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize);
if (baseSize != 0 && desiredWindowWidth > baseSize) {
childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width);
childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height);
performMeasure(childWidthMeasureSpec, childHeightMeasureSpec);
if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured ("
+ host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")");
if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) {
goodMeasure = true;
} else {
// Didn't fit in that size... try expanding a bit.
baseSize = (baseSize+desiredWindowWidth)/2;
if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize="
+ baseSize);
childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width);
performMeasure(childWidthMeasureSpec, childHeightMeasureSpec);
if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured ("
+ host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")");
if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) {
if (DEBUG_DIALOG) Log.v(TAG, "Good!");
goodMeasure = true;
}
}
}
}
if (!goodMeasure) {
childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width);
childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height);
performMeasure(childWidthMeasureSpec, childHeightMeasureSpec);
if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) {
windowSizeMayChange = true;
}
}
if (DBG) {
System.out.println("======================================");
System.out.println("performTraversals -- after measure");
host.debug();
}
return windowSizeMayChange;
}
private void performTraversals() {
// cache mView since it is used so much below...
final View host = mView;
if (DBG) {
System.out.println("======================================");
System.out.println("performTraversals");
host.debug();
}
if (host == null || !mAdded)
return;
mIsInTraversal = true;
mWillDrawSoon = true;
boolean windowSizeMayChange = false;
boolean newSurface = false;
boolean surfaceChanged = false;
WindowManager.LayoutParams lp = mWindowAttributes;
int desiredWindowWidth;
int desiredWindowHeight;
final View.AttachInfo attachInfo = mAttachInfo;
final int viewVisibility = getHostVisibility();
boolean viewVisibilityChanged = mViewVisibility != viewVisibility
|| mNewSurfaceNeeded;
WindowManager.LayoutParams params = null;
if (mWindowAttributesChanged) {
mWindowAttributesChanged = false;
surfaceChanged = true;
params = lp;
}
CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get();
if (compatibilityInfo.supportsScreen() == mLastInCompatMode) {
params = lp;
mFullRedrawNeeded = true;
mLayoutRequested = true;
if (mLastInCompatMode) {
params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW;
mLastInCompatMode = false;
} else {
params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW;
mLastInCompatMode = true;
}
}
mWindowAttributesChangesFlag = 0;
Rect frame = mWinFrame;
if (mFirst) {
mFullRedrawNeeded = true;
mLayoutRequested = true;
if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) {
// NOTE -- system code, won't try to do compat mode.
Point size = new Point();
mDisplay.getRealSize(size);
desiredWindowWidth = size.x;
desiredWindowHeight = size.y;
} else {
DisplayMetrics packageMetrics =
mView.getContext().getResources().getDisplayMetrics();
desiredWindowWidth = packageMetrics.widthPixels;
desiredWindowHeight = packageMetrics.heightPixels;
}
// For the very first time, tell the view hierarchy that it
// is attached to the window. Note that at this point the surface
// object is not initialized to its backing store, but soon it
// will be (assuming the window is visible).
attachInfo.mSurface = mSurface;
// We used to use the following condition to choose 32 bits drawing caches:
// PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888
// However, windows are now always 32 bits by default, so choose 32 bits
attachInfo.mUse32BitDrawingCache = true;
attachInfo.mHasWindowFocus = false;
attachInfo.mWindowVisibility = viewVisibility;
attachInfo.mRecomputeGlobalAttributes = false;
viewVisibilityChanged = false;
mLastConfiguration.setTo(host.getResources().getConfiguration());
mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility;
host.dispatchAttachedToWindow(attachInfo, 0);
mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets);
host.fitSystemWindows(mFitSystemWindowsInsets);
//Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn);
} else {
desiredWindowWidth = frame.width();
desiredWindowHeight = frame.height();
if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) {
if (DEBUG_ORIENTATION) Log.v(TAG,
"View " + host + " resized to: " + frame);
mFullRedrawNeeded = true;
mLayoutRequested = true;
windowSizeMayChange = true;
}
}
if (viewVisibilityChanged) {
attachInfo.mWindowVisibility = viewVisibility;
host.dispatchWindowVisibilityChanged(viewVisibility);
if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) {
destroyHardwareResources();
}
if (viewVisibility == View.GONE) {
// After making a window gone, we will count it as being
// shown for the first time the next time it gets focus.
mHasHadWindowFocus = false;
}
}
// Execute enqueued actions on every traversal in case a detached view enqueued an action
getRunQueue().executeActions(attachInfo.mHandler);
boolean insetsChanged = false;
boolean layoutRequested = mLayoutRequested && !mStopped;
if (layoutRequested) {
final Resources res = mView.getContext().getResources();
if (mFirst) {
// make sure touch mode code executes by setting cached value
// to opposite of the added touch mode.
mAttachInfo.mInTouchMode = !mAddedTouchMode;
ensureTouchModeLocally(mAddedTouchMode);
} else {
if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) {
insetsChanged = true;
}
if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) {
mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets);
if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: "
+ mAttachInfo.mVisibleInsets);
}
if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT
|| lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) {
windowSizeMayChange = true;
if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) {
// NOTE -- system code, won't try to do compat mode.
Point size = new Point();
mDisplay.getRealSize(size);
desiredWindowWidth = size.x;
desiredWindowHeight = size.y;
} else {
DisplayMetrics packageMetrics = res.getDisplayMetrics();
desiredWindowWidth = packageMetrics.widthPixels;
desiredWindowHeight = packageMetrics.heightPixels;
}
}
}
// Ask host how big it wants to be
windowSizeMayChange |= measureHierarchy(host, lp, res,
desiredWindowWidth, desiredWindowHeight);
}
if (collectViewAttributes()) {
params = lp;
}
if (attachInfo.mForceReportNewAttributes) {
attachInfo.mForceReportNewAttributes = false;
params = lp;
}
if (mFirst || attachInfo.mViewVisibilityChanged) {
attachInfo.mViewVisibilityChanged = false;
int resizeMode = mSoftInputMode &
WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST;
// If we are in auto resize mode, then we need to determine
// what mode to use now.
if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) {
final int N = attachInfo.mScrollContainers.size();
for (int i=0; i<N; i++) {
if (attachInfo.mScrollContainers.get(i).isShown()) {
resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE;
}
}
if (resizeMode == 0) {
resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN;
}
if ((lp.softInputMode &
WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) {
lp.softInputMode = (lp.softInputMode &
~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) |
resizeMode;
params = lp;
}
}
}
if (params != null && (host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) {
if (!PixelFormat.formatHasAlpha(params.format)) {
params.format = PixelFormat.TRANSLUCENT;
}
}
if (mFitSystemWindowsRequested) {
mFitSystemWindowsRequested = false;
mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets);
host.fitSystemWindows(mFitSystemWindowsInsets);
if (mLayoutRequested) {
// Short-circuit catching a new layout request here, so
// we don't need to go through two layout passes when things
// change due to fitting system windows, which can happen a lot.
windowSizeMayChange |= measureHierarchy(host, lp,
mView.getContext().getResources(),
desiredWindowWidth, desiredWindowHeight);
}
}
if (layoutRequested) {
// Clear this now, so that if anything requests a layout in the
// rest of this function we will catch it and re-run a full
// layout pass.
mLayoutRequested = false;
}
boolean windowShouldResize = layoutRequested && windowSizeMayChange
&& ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight())
|| (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT &&
frame.width() < desiredWindowWidth && frame.width() != mWidth)
|| (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT &&
frame.height() < desiredWindowHeight && frame.height() != mHeight));
final boolean computesInternalInsets =
attachInfo.mTreeObserver.hasComputeInternalInsetsListeners();
boolean insetsPending = false;
int relayoutResult = 0;
if (mFirst || windowShouldResize || insetsChanged ||
viewVisibilityChanged || params != null) {
if (viewVisibility == View.VISIBLE) {
// If this window is giving internal insets to the window
// manager, and it is being added or changing its visibility,
// then we want to first give the window manager "fake"
// insets to cause it to effectively ignore the content of
// the window during layout. This avoids it briefly causing
// other windows to resize/move based on the raw frame of the
// window, waiting until we can finish laying out this window
// and get back to the window manager with the ultimately
// computed insets.
insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged);
}
if (mSurfaceHolder != null) {
mSurfaceHolder.mSurfaceLock.lock();
mDrawingAllowed = true;
}
boolean hwInitialized = false;
boolean contentInsetsChanged = false;
boolean visibleInsetsChanged;
boolean hadSurface = mSurface.isValid();
try {
if (DEBUG_LAYOUT) {
Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" +
host.getMeasuredHeight() + ", params=" + params);
}
final int surfaceGenerationId = mSurface.getGenerationId();
relayoutResult = relayoutWindow(params, viewVisibility, insetsPending);
if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString()
+ " content=" + mPendingContentInsets.toShortString()
+ " visible=" + mPendingVisibleInsets.toShortString()
+ " surface=" + mSurface);
if (mPendingConfiguration.seq != 0) {
if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: "
+ mPendingConfiguration);
updateConfiguration(mPendingConfiguration, !mFirst);
mPendingConfiguration.seq = 0;
}
contentInsetsChanged = !mPendingContentInsets.equals(
mAttachInfo.mContentInsets);
visibleInsetsChanged = !mPendingVisibleInsets.equals(
mAttachInfo.mVisibleInsets);
if (contentInsetsChanged) {
if (mWidth > 0 && mHeight > 0 && lp != null &&
((lp.systemUiVisibility|lp.subtreeSystemUiVisibility)
& View.SYSTEM_UI_LAYOUT_FLAGS) == 0 &&
mSurface != null && mSurface.isValid() &&
!mAttachInfo.mTurnOffWindowResizeAnim &&
mAttachInfo.mHardwareRenderer != null &&
mAttachInfo.mHardwareRenderer.isEnabled() &&
mAttachInfo.mHardwareRenderer.validate() &&
lp != null && !PixelFormat.formatHasAlpha(lp.format)) {
disposeResizeBuffer();
boolean completed = false;
HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas();
HardwareCanvas layerCanvas = null;
try {
if (mResizeBuffer == null) {
mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer(
mWidth, mHeight, false);
} else if (mResizeBuffer.getWidth() != mWidth ||
mResizeBuffer.getHeight() != mHeight) {
mResizeBuffer.resize(mWidth, mHeight);
}
// TODO: should handle create/resize failure
layerCanvas = mResizeBuffer.start(hwRendererCanvas);
layerCanvas.setViewport(mWidth, mHeight);
layerCanvas.onPreDraw(null);
final int restoreCount = layerCanvas.save();
layerCanvas.drawColor(0xff000000, PorterDuff.Mode.SRC);
int yoff;
final boolean scrolling = mScroller != null
&& mScroller.computeScrollOffset();
if (scrolling) {
yoff = mScroller.getCurrY();
mScroller.abortAnimation();
} else {
yoff = mScrollY;
}
layerCanvas.translate(0, -yoff);
if (mTranslator != null) {
mTranslator.translateCanvas(layerCanvas);
}
mView.draw(layerCanvas);
drawAccessibilityFocusedDrawableIfNeeded(layerCanvas);
mResizeBufferStartTime = SystemClock.uptimeMillis();
mResizeBufferDuration = mView.getResources().getInteger(
com.android.internal.R.integer.config_mediumAnimTime);
completed = true;
layerCanvas.restoreToCount(restoreCount);
} catch (OutOfMemoryError e) {
Log.w(TAG, "Not enough memory for content change anim buffer", e);
} finally {
if (layerCanvas != null) {
layerCanvas.onPostDraw();
}
if (mResizeBuffer != null) {
mResizeBuffer.end(hwRendererCanvas);
if (!completed) {
mResizeBuffer.destroy();
mResizeBuffer = null;
}
}
}
}
mAttachInfo.mContentInsets.set(mPendingContentInsets);
if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: "
+ mAttachInfo.mContentInsets);
}
if (contentInsetsChanged || mLastSystemUiVisibility !=
mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested) {
mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility;
mFitSystemWindowsRequested = false;
mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets);
host.fitSystemWindows(mFitSystemWindowsInsets);
}
if (visibleInsetsChanged) {
mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets);
if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: "
+ mAttachInfo.mVisibleInsets);
}
if (!hadSurface) {
if (mSurface.isValid()) {
// If we are creating a new surface, then we need to
// completely redraw it. Also, when we get to the
// point of drawing it we will hold off and schedule
// a new traversal instead. This is so we can tell the
// window manager about all of the windows being displayed
// before actually drawing them, so it can display then
// all at once.
newSurface = true;
mFullRedrawNeeded = true;
mPreviousTransparentRegion.setEmpty();
if (mAttachInfo.mHardwareRenderer != null) {
try {
hwInitialized = mAttachInfo.mHardwareRenderer.initialize(
mHolder.getSurface());
} catch (Surface.OutOfResourcesException e) {
Log.e(TAG, "OutOfResourcesException initializing HW surface", e);
try {
if (!mWindowSession.outOfMemory(mWindow) &&
Process.myUid() != Process.SYSTEM_UID) {
Slog.w(TAG, "No processes killed for memory; killing self");
Process.killProcess(Process.myPid());
}
} catch (RemoteException ex) {
}
mLayoutRequested = true; // ask wm for a new surface next time.
return;
}
}
}
} else if (!mSurface.isValid()) {
// If the surface has been removed, then reset the scroll
// positions.
mLastScrolledFocus = null;
mScrollY = mCurScrollY = 0;
if (mScroller != null) {
mScroller.abortAnimation();
}
disposeResizeBuffer();
// Our surface is gone
if (mAttachInfo.mHardwareRenderer != null &&
mAttachInfo.mHardwareRenderer.isEnabled()) {
mAttachInfo.mHardwareRenderer.destroy(true);
}
} else if (surfaceGenerationId != mSurface.getGenerationId() &&
mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) {
mFullRedrawNeeded = true;
try {
mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface());
} catch (Surface.OutOfResourcesException e) {
Log.e(TAG, "OutOfResourcesException updating HW surface", e);
try {
if (!mWindowSession.outOfMemory(mWindow)) {
Slog.w(TAG, "No processes killed for memory; killing self");
Process.killProcess(Process.myPid());
}
} catch (RemoteException ex) {
}
mLayoutRequested = true; // ask wm for a new surface next time.
return;
}
}
} catch (RemoteException e) {
}
if (DEBUG_ORIENTATION) Log.v(
TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface);
attachInfo.mWindowLeft = frame.left;
attachInfo.mWindowTop = frame.top;
// !!FIXME!! This next section handles the case where we did not get the
// window size we asked for. We should avoid this by getting a maximum size from
// the window session beforehand.
if (mWidth != frame.width() || mHeight != frame.height()) {
mWidth = frame.width();
mHeight = frame.height();
}
if (mSurfaceHolder != null) {
// The app owns the surface; tell it about what is going on.
if (mSurface.isValid()) {
// XXX .copyFrom() doesn't work!
//mSurfaceHolder.mSurface.copyFrom(mSurface);
mSurfaceHolder.mSurface = mSurface;
}
mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight);
mSurfaceHolder.mSurfaceLock.unlock();
if (mSurface.isValid()) {
if (!hadSurface) {
mSurfaceHolder.ungetCallbacks();
mIsCreating = true;
mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder);
SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks();
if (callbacks != null) {
for (SurfaceHolder.Callback c : callbacks) {
c.surfaceCreated(mSurfaceHolder);
}
}
surfaceChanged = true;
}
if (surfaceChanged) {
mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder,
lp.format, mWidth, mHeight);
SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks();
if (callbacks != null) {
for (SurfaceHolder.Callback c : callbacks) {
c.surfaceChanged(mSurfaceHolder, lp.format,
mWidth, mHeight);
}
}
}
mIsCreating = false;
} else if (hadSurface) {
mSurfaceHolder.ungetCallbacks();
SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks();
mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder);
if (callbacks != null) {
for (SurfaceHolder.Callback c : callbacks) {
c.surfaceDestroyed(mSurfaceHolder);
}
}
mSurfaceHolder.mSurfaceLock.lock();
try {
mSurfaceHolder.mSurface = new Surface();
} finally {
mSurfaceHolder.mSurfaceLock.unlock();
}
}
}
if (mAttachInfo.mHardwareRenderer != null &&
mAttachInfo.mHardwareRenderer.isEnabled()) {
if (hwInitialized || windowShouldResize ||
mWidth != mAttachInfo.mHardwareRenderer.getWidth() ||
mHeight != mAttachInfo.mHardwareRenderer.getHeight()) {
mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight);
if (!hwInitialized) {
mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface());
mFullRedrawNeeded = true;
}
}
}
if (!mStopped) {
boolean focusChangedDueToTouchMode = ensureTouchModeLocally(
(relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0);
if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth()
|| mHeight != host.getMeasuredHeight() || contentInsetsChanged) {
int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width);
int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height);
if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth="
+ mWidth + " measuredWidth=" + host.getMeasuredWidth()
+ " mHeight=" + mHeight
+ " measuredHeight=" + host.getMeasuredHeight()
+ " coveredInsetsChanged=" + contentInsetsChanged);
// Ask host how big it wants to be
performMeasure(childWidthMeasureSpec, childHeightMeasureSpec);
// Implementation of weights from WindowManager.LayoutParams
// We just grow the dimensions as needed and re-measure if
// needs be
int width = host.getMeasuredWidth();
int height = host.getMeasuredHeight();
boolean measureAgain = false;
if (lp.horizontalWeight > 0.0f) {
width += (int) ((mWidth - width) * lp.horizontalWeight);
childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width,
MeasureSpec.EXACTLY);
measureAgain = true;
}
if (lp.verticalWeight > 0.0f) {
height += (int) ((mHeight - height) * lp.verticalWeight);
childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height,
MeasureSpec.EXACTLY);
measureAgain = true;
}
if (measureAgain) {
if (DEBUG_LAYOUT) Log.v(TAG,
"And hey let's measure once more: width=" + width
+ " height=" + height);
performMeasure(childWidthMeasureSpec, childHeightMeasureSpec);
}
layoutRequested = true;
}
}
} else {
// Not the first pass and no window/insets/visibility change but the window
// may have moved and we need check that and if so to update the left and right
// in the attach info. We translate only the window frame since on window move
// the window manager tells us only for the new frame but the insets are the
// same and we do not want to translate them more than once.
// TODO: Well, we are checking whether the frame has changed similarly
// to how this is done for the insets. This is however incorrect since
// the insets and the frame are translated. For example, the old frame
// was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new
// reported frame is (2, 2 - 2, 2) which implies no change but this is not
// true since we are comparing a not translated value to a translated one.
// This scenario is rare but we may want to fix that.
final boolean windowMoved = (attachInfo.mWindowLeft != frame.left
|| attachInfo.mWindowTop != frame.top);
if (windowMoved) {
if (mTranslator != null) {
mTranslator.translateRectInScreenToAppWinFrame(frame);
}
attachInfo.mWindowLeft = frame.left;
attachInfo.mWindowTop = frame.top;
}
}
final boolean didLayout = layoutRequested && !mStopped;
boolean triggerGlobalLayoutListener = didLayout
|| attachInfo.mRecomputeGlobalAttributes;
if (didLayout) {
performLayout();
// By this point all views have been sized and positionned
// We can compute the transparent area
if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) {
// start out transparent
// TODO: AVOID THAT CALL BY CACHING THE RESULT?
host.getLocationInWindow(mTmpLocation);
mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1],
mTmpLocation[0] + host.mRight - host.mLeft,
mTmpLocation[1] + host.mBottom - host.mTop);
host.gatherTransparentRegion(mTransparentRegion);
if (mTranslator != null) {
mTranslator.translateRegionInWindowToScreen(mTransparentRegion);
}
if (!mTransparentRegion.equals(mPreviousTransparentRegion)) {
mPreviousTransparentRegion.set(mTransparentRegion);
// reconfigure window manager
try {
mWindowSession.setTransparentRegion(mWindow, mTransparentRegion);
} catch (RemoteException e) {
}
}
}
if (DBG) {
System.out.println("======================================");
System.out.println("performTraversals -- after setFrame");
host.debug();
}
}
if (triggerGlobalLayoutListener) {
attachInfo.mRecomputeGlobalAttributes = false;
attachInfo.mTreeObserver.dispatchOnGlobalLayout();
if (AccessibilityManager.getInstance(host.mContext).isEnabled()) {
postSendWindowContentChangedCallback(mView);
}
}
if (computesInternalInsets) {
// Clear the original insets.
final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets;
insets.reset();
// Compute new insets in place.
attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets);
// Tell the window manager.
if (insetsPending || !mLastGivenInsets.equals(insets)) {
mLastGivenInsets.set(insets);
// Translate insets to screen coordinates if needed.
final Rect contentInsets;
final Rect visibleInsets;
final Region touchableRegion;
if (mTranslator != null) {
contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets);
visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets);
touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion);
} else {
contentInsets = insets.contentInsets;
visibleInsets = insets.visibleInsets;
touchableRegion = insets.touchableRegion;
}
try {
mWindowSession.setInsets(mWindow, insets.mTouchableInsets,
contentInsets, visibleInsets, touchableRegion);
} catch (RemoteException e) {
}
}
}
boolean skipDraw = false;
if (mFirst) {
// handle first focus request
if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()="
+ mView.hasFocus());
if (mView != null) {
if (!mView.hasFocus()) {
mView.requestFocus(View.FOCUS_FORWARD);
mFocusedView = mRealFocusedView = mView.findFocus();
if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view="
+ mFocusedView);
} else {
mRealFocusedView = mView.findFocus();
if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view="
+ mRealFocusedView);
}
}
if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) {
// The first time we relayout the window, if the system is
// doing window animations, we want to hold of on any future
// draws until the animation is done.
mWindowsAnimating = true;
}
} else if (mWindowsAnimating) {
skipDraw = true;
}
mFirst = false;
mWillDrawSoon = false;
mNewSurfaceNeeded = false;
mViewVisibility = viewVisibility;
if (mAttachInfo.mHasWindowFocus) {
final boolean imTarget = WindowManager.LayoutParams
.mayUseInputMethod(mWindowAttributes.flags);
if (imTarget != mLastWasImTarget) {
mLastWasImTarget = imTarget;
InputMethodManager imm = InputMethodManager.peekInstance();
if (imm != null && imTarget) {
imm.startGettingWindowFocus(mView);
imm.onWindowFocus(mView, mView.findFocus(),
mWindowAttributes.softInputMode,
!mHasHadWindowFocus, mWindowAttributes.flags);
}
}
}
// Remember if we must report the next draw.
if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) {
mReportNextDraw = true;
}
boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() ||
viewVisibility != View.VISIBLE;
if (!cancelDraw && !newSurface) {
if (!skipDraw || mReportNextDraw) {
if (mPendingTransitions != null && mPendingTransitions.size() > 0) {
for (int i = 0; i < mPendingTransitions.size(); ++i) {
mPendingTransitions.get(i).startChangingAnimations();
}
mPendingTransitions.clear();
}
performDraw();
}
} else {
if (viewVisibility == View.VISIBLE) {
// Try again
scheduleTraversals();
} else if (mPendingTransitions != null && mPendingTransitions.size() > 0) {
for (int i = 0; i < mPendingTransitions.size(); ++i) {
mPendingTransitions.get(i).endChangingAnimations();
}
mPendingTransitions.clear();
}
}
mIsInTraversal = false;
}
private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) {
Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure");
try {
mView.measure(childWidthMeasureSpec, childHeightMeasureSpec);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_VIEW);
}
}
private void performLayout() {
mLayoutRequested = false;
mScrollMayChange = true;
final View host = mView;
if (DEBUG_ORIENTATION || DEBUG_LAYOUT) {
Log.v(TAG, "Laying out " + host + " to (" +
host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")");
}
Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout");
try {
host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight());
} finally {
Trace.traceEnd(Trace.TRACE_TAG_VIEW);
}
}
public void requestTransparentRegion(View child) {
// the test below should not fail unless someone is messing with us
checkThread();
if (mView == child) {
mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS;
// Need to make sure we re-evaluate the window attributes next
// time around, to ensure the window has the correct format.
mWindowAttributesChanged = true;
mWindowAttributesChangesFlag = 0;
requestLayout();
}
}
/**
* Figures out the measure spec for the root view in a window based on it's
* layout params.
*
* @param windowSize
* The available width or height of the window
*
* @param rootDimension
* The layout params for one dimension (width or height) of the
* window.
*
* @return The measure spec to use to measure the root view.
*/
private static int getRootMeasureSpec(int windowSize, int rootDimension) {
int measureSpec;
switch (rootDimension) {
case ViewGroup.LayoutParams.MATCH_PARENT:
// Window can't resize. Force root view to be windowSize.
measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY);
break;
case ViewGroup.LayoutParams.WRAP_CONTENT:
// Window can resize. Set max size for root view.
measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST);
break;
default:
// Window wants to be an exact size. Force root view to be that size.
measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY);
break;
}
return measureSpec;
}
int mHardwareYOffset;
int mResizeAlpha;
final Paint mResizePaint = new Paint();
public void onHardwarePreDraw(HardwareCanvas canvas) {
canvas.translate(0, -mHardwareYOffset);
}
public void onHardwarePostDraw(HardwareCanvas canvas) {
if (mResizeBuffer != null) {
mResizePaint.setAlpha(mResizeAlpha);
canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint);
}
drawAccessibilityFocusedDrawableIfNeeded(canvas);
}
/**
* @hide
*/
void outputDisplayList(View view) {
if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) {
DisplayList displayList = view.getDisplayList();
if (displayList != null) {
mAttachInfo.mHardwareCanvas.outputDisplayList(displayList);
}
}
}
/**
* @see #PROPERTY_PROFILE_RENDERING
*/
private void profileRendering(boolean enabled) {
if (mProfileRendering) {
mRenderProfilingEnabled = enabled;
if (mRenderProfiler == null) {
mRenderProfiler = new Thread(new Runnable() {
@Override
public void run() {
Log.d(TAG, "Starting profiling thread");
while (mRenderProfilingEnabled) {
mAttachInfo.mHandler.post(new Runnable() {
@Override
public void run() {
mDirty.set(0, 0, mWidth, mHeight);
scheduleTraversals();
}
});
try {
// TODO: This should use vsync when we get an API
Thread.sleep(15);
} catch (InterruptedException e) {
Log.d(TAG, "Exiting profiling thread");
}
}
}
}, "Rendering Profiler");
mRenderProfiler.start();
} else {
mRenderProfiler.interrupt();
mRenderProfiler = null;
}
}
}
/**
* Called from draw() when DEBUG_FPS is enabled
*/
private void trackFPS() {
// Tracks frames per second drawn. First value in a series of draws may be bogus
// because it down not account for the intervening idle time
long nowTime = System.currentTimeMillis();
if (mFpsStartTime < 0) {
mFpsStartTime = mFpsPrevTime = nowTime;
mFpsNumFrames = 0;
} else {
++mFpsNumFrames;
String thisHash = Integer.toHexString(System.identityHashCode(this));
long frameTime = nowTime - mFpsPrevTime;
long totalTime = nowTime - mFpsStartTime;
Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime);
mFpsPrevTime = nowTime;
if (totalTime > 1000) {
float fps = (float) mFpsNumFrames * 1000 / totalTime;
Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps);
mFpsStartTime = nowTime;
mFpsNumFrames = 0;
}
}
}
private void performDraw() {
if (!mAttachInfo.mScreenOn && !mReportNextDraw) {
return;
}
final boolean fullRedrawNeeded = mFullRedrawNeeded;
mFullRedrawNeeded = false;
mIsDrawing = true;
Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw");
try {
draw(fullRedrawNeeded);
} finally {
mIsDrawing = false;
Trace.traceEnd(Trace.TRACE_TAG_VIEW);
}
if (mReportNextDraw) {
mReportNextDraw = false;
if (LOCAL_LOGV) {
Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle());
}
if (mSurfaceHolder != null && mSurface.isValid()) {
mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder);
SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks();
if (callbacks != null) {
for (SurfaceHolder.Callback c : callbacks) {
if (c instanceof SurfaceHolder.Callback2) {
((SurfaceHolder.Callback2)c).surfaceRedrawNeeded(
mSurfaceHolder);
}
}
}
}
try {
mWindowSession.finishDrawing(mWindow);
} catch (RemoteException e) {
}
}
}
private void draw(boolean fullRedrawNeeded) {
Surface surface = mSurface;
if (surface == null || !surface.isValid()) {
return;
}
if (DEBUG_FPS) {
trackFPS();
}
if (!sFirstDrawComplete) {
synchronized (sFirstDrawHandlers) {
sFirstDrawComplete = true;
final int count = sFirstDrawHandlers.size();
for (int i = 0; i< count; i++) {
mHandler.post(sFirstDrawHandlers.get(i));
}
}
}
scrollToRectOrFocus(null, false);
final AttachInfo attachInfo = mAttachInfo;
if (attachInfo.mViewScrollChanged) {
attachInfo.mViewScrollChanged = false;
attachInfo.mTreeObserver.dispatchOnScrollChanged();
}
int yoff;
boolean animating = mScroller != null && mScroller.computeScrollOffset();
if (animating) {
yoff = mScroller.getCurrY();
} else {
yoff = mScrollY;
}
if (mCurScrollY != yoff) {
mCurScrollY = yoff;
fullRedrawNeeded = true;
}
final float appScale = attachInfo.mApplicationScale;
final boolean scalingRequired = attachInfo.mScalingRequired;
int resizeAlpha = 0;
if (mResizeBuffer != null) {
long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime;
if (deltaTime < mResizeBufferDuration) {
float amt = deltaTime/(float) mResizeBufferDuration;
amt = mResizeInterpolator.getInterpolation(amt);
animating = true;
resizeAlpha = 255 - (int)(amt*255);
} else {
disposeResizeBuffer();
}
}
final Rect dirty = mDirty;
if (mSurfaceHolder != null) {
// The app owns the surface, we won't draw.
dirty.setEmpty();
if (animating) {
if (mScroller != null) {
mScroller.abortAnimation();
}
disposeResizeBuffer();
}
return;
}
if (fullRedrawNeeded) {
attachInfo.mIgnoreDirtyState = true;
dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f));
}
if (DEBUG_ORIENTATION || DEBUG_DRAW) {
Log.v(TAG, "Draw " + mView + "/"
+ mWindowAttributes.getTitle()
+ ": dirty={" + dirty.left + "," + dirty.top
+ "," + dirty.right + "," + dirty.bottom + "} surface="
+ surface + " surface.isValid()=" + surface.isValid() + ", appScale:" +
appScale + ", width=" + mWidth + ", height=" + mHeight);
}
attachInfo.mTreeObserver.dispatchOnDraw();
if (!dirty.isEmpty() || mIsAnimating) {
if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) {
// Draw with hardware renderer.
mIsAnimating = false;
mHardwareYOffset = yoff;
mResizeAlpha = resizeAlpha;
mCurrentDirty.set(dirty);
mCurrentDirty.union(mPreviousDirty);
mPreviousDirty.set(dirty);
dirty.setEmpty();
if (attachInfo.mHardwareRenderer.draw(mView, attachInfo, this,
animating ? null : mCurrentDirty)) {
mPreviousDirty.set(0, 0, mWidth, mHeight);
}
} else if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) {
return;
}
}
if (animating) {
mFullRedrawNeeded = true;
scheduleTraversals();
}
}
/**
* @return true if drawing was succesfull, false if an error occurred
*/
private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff,
boolean scalingRequired, Rect dirty) {
// If we get here with a disabled & requested hardware renderer, something went
// wrong (an invalidate posted right before we destroyed the hardware surface
// for instance) so we should just bail out. Locking the surface with software
// rendering at this point would lock it forever and prevent hardware renderer
// from doing its job when it comes back.
if (attachInfo.mHardwareRenderer != null && !attachInfo.mHardwareRenderer.isEnabled() &&
attachInfo.mHardwareRenderer.isRequested()) {
mFullRedrawNeeded = true;
scheduleTraversals();
return false;
}
// Draw with software renderer.
Canvas canvas;
try {
int left = dirty.left;
int top = dirty.top;
int right = dirty.right;
int bottom = dirty.bottom;
canvas = mSurface.lockCanvas(dirty);
if (left != dirty.left || top != dirty.top || right != dirty.right ||
bottom != dirty.bottom) {
attachInfo.mIgnoreDirtyState = true;
}
// TODO: Do this in native
canvas.setDensity(mDensity);
} catch (Surface.OutOfResourcesException e) {
Log.e(TAG, "OutOfResourcesException locking surface", e);
try {
if (!mWindowSession.outOfMemory(mWindow)) {
Slog.w(TAG, "No processes killed for memory; killing self");
Process.killProcess(Process.myPid());
}
} catch (RemoteException ex) {
}
mLayoutRequested = true; // ask wm for a new surface next time.
return false;
} catch (IllegalArgumentException e) {
Log.e(TAG, "Could not lock surface", e);
// Don't assume this is due to out of memory, it could be
// something else, and if it is something else then we could
// kill stuff (or ourself) for no reason.
mLayoutRequested = true; // ask wm for a new surface next time.
return false;
}
try {
if (DEBUG_ORIENTATION || DEBUG_DRAW) {
Log.v(TAG, "Surface " + surface + " drawing to bitmap w="
+ canvas.getWidth() + ", h=" + canvas.getHeight());
//canvas.drawARGB(255, 255, 0, 0);
}
// If this bitmap's format includes an alpha channel, we
// need to clear it before drawing so that the child will
// properly re-composite its drawing on a transparent
// background. This automatically respects the clip/dirty region
// or
// If we are applying an offset, we need to clear the area
// where the offset doesn't appear to avoid having garbage
// left in the blank areas.
if (!canvas.isOpaque() || yoff != 0) {
canvas.drawColor(0, PorterDuff.Mode.CLEAR);
}
dirty.setEmpty();
mIsAnimating = false;
attachInfo.mDrawingTime = SystemClock.uptimeMillis();
mView.mPrivateFlags |= View.PFLAG_DRAWN;
if (DEBUG_DRAW) {
Context cxt = mView.getContext();
Log.i(TAG, "Drawing: package:" + cxt.getPackageName() +
", metrics=" + cxt.getResources().getDisplayMetrics() +
", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo());
}
try {
canvas.translate(0, -yoff);
if (mTranslator != null) {
mTranslator.translateCanvas(canvas);
}
canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0);
attachInfo.mSetIgnoreDirtyState = false;
mView.draw(canvas);
drawAccessibilityFocusedDrawableIfNeeded(canvas);
} finally {
if (!attachInfo.mSetIgnoreDirtyState) {
// Only clear the flag if it was not set during the mView.draw() call
attachInfo.mIgnoreDirtyState = false;
}
}
} finally {
try {
surface.unlockCanvasAndPost(canvas);
} catch (IllegalArgumentException e) {
Log.e(TAG, "Could not unlock surface", e);
mLayoutRequested = true; // ask wm for a new surface next time.
//noinspection ReturnInsideFinallyBlock
return false;
}
if (LOCAL_LOGV) {
Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost");
}
}
return true;
}
/**
* We want to draw a highlight around the current accessibility focused.
* Since adding a style for all possible view is not a viable option we
* have this specialized drawing method.
*
* Note: We are doing this here to be able to draw the highlight for
* virtual views in addition to real ones.
*
* @param canvas The canvas on which to draw.
*/
private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) {
AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext);
if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) {
return;
}
if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) {
return;
}
Drawable drawable = getAccessibilityFocusedDrawable();
if (drawable == null) {
return;
}
AccessibilityNodeProvider provider =
mAccessibilityFocusedHost.getAccessibilityNodeProvider();
Rect bounds = mView.mAttachInfo.mTmpInvalRect;
if (provider == null) {
mAccessibilityFocusedHost.getBoundsOnScreen(bounds);
} else {
if (mAccessibilityFocusedVirtualView == null) {
return;
}
mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds);
}
bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop);
drawable.setBounds(bounds);
drawable.draw(canvas);
}
private Drawable getAccessibilityFocusedDrawable() {
if (mAttachInfo != null) {
// Lazily load the accessibility focus drawable.
if (mAttachInfo.mAccessibilityFocusDrawable == null) {
TypedValue value = new TypedValue();
final boolean resolved = mView.mContext.getTheme().resolveAttribute(
R.attr.accessibilityFocusedDrawable, value, true);
if (resolved) {
mAttachInfo.mAccessibilityFocusDrawable =
mView.mContext.getResources().getDrawable(value.resourceId);
}
}
return mAttachInfo.mAccessibilityFocusDrawable;
}
return null;
}
void invalidateDisplayLists() {
final ArrayList<DisplayList> displayLists = mDisplayLists;
final int count = displayLists.size();
for (int i = 0; i < count; i++) {
final DisplayList displayList = displayLists.get(i);
displayList.invalidate();
displayList.clear();
}
displayLists.clear();
}
boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) {
final View.AttachInfo attachInfo = mAttachInfo;
final Rect ci = attachInfo.mContentInsets;
final Rect vi = attachInfo.mVisibleInsets;
int scrollY = 0;
boolean handled = false;
if (vi.left > ci.left || vi.top > ci.top
|| vi.right > ci.right || vi.bottom > ci.bottom) {
// We'll assume that we aren't going to change the scroll
// offset, since we want to avoid that unless it is actually
// going to make the focus visible... otherwise we scroll
// all over the place.
scrollY = mScrollY;
// We can be called for two different situations: during a draw,
// to update the scroll position if the focus has changed (in which
// case 'rectangle' is null), or in response to a
// requestChildRectangleOnScreen() call (in which case 'rectangle'
// is non-null and we just want to scroll to whatever that
// rectangle is).
View focus = mRealFocusedView;
// When in touch mode, focus points to the previously focused view,
// which may have been removed from the view hierarchy. The following
// line checks whether the view is still in our hierarchy.
if (focus == null || focus.mAttachInfo != mAttachInfo) {
mRealFocusedView = null;
return false;
}
if (focus != mLastScrolledFocus) {
// If the focus has changed, then ignore any requests to scroll
// to a rectangle; first we want to make sure the entire focus
// view is visible.
rectangle = null;
}
if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus
+ " rectangle=" + rectangle + " ci=" + ci
+ " vi=" + vi);
if (focus == mLastScrolledFocus && !mScrollMayChange
&& rectangle == null) {
// Optimization: if the focus hasn't changed since last
// time, and no layout has happened, then just leave things
// as they are.
if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y="
+ mScrollY + " vi=" + vi.toShortString());
} else if (focus != null) {
// We need to determine if the currently focused view is
// within the visible part of the window and, if not, apply
// a pan so it can be seen.
mLastScrolledFocus = focus;
mScrollMayChange = false;
if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?");
// Try to find the rectangle from the focus view.
if (focus.getGlobalVisibleRect(mVisRect, null)) {
if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w="
+ mView.getWidth() + " h=" + mView.getHeight()
+ " ci=" + ci.toShortString()
+ " vi=" + vi.toShortString());
if (rectangle == null) {
focus.getFocusedRect(mTempRect);
if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus
+ ": focusRect=" + mTempRect.toShortString());
if (mView instanceof ViewGroup) {
((ViewGroup) mView).offsetDescendantRectToMyCoords(
focus, mTempRect);
}
if (DEBUG_INPUT_RESIZE) Log.v(TAG,
"Focus in window: focusRect="
+ mTempRect.toShortString()
+ " visRect=" + mVisRect.toShortString());
} else {
mTempRect.set(rectangle);
if (DEBUG_INPUT_RESIZE) Log.v(TAG,
"Request scroll to rect: "
+ mTempRect.toShortString()
+ " visRect=" + mVisRect.toShortString());
}
if (mTempRect.intersect(mVisRect)) {
if (DEBUG_INPUT_RESIZE) Log.v(TAG,
"Focus window visible rect: "
+ mTempRect.toShortString());
if (mTempRect.height() >
(mView.getHeight()-vi.top-vi.bottom)) {
// If the focus simply is not going to fit, then
// best is probably just to leave things as-is.
if (DEBUG_INPUT_RESIZE) Log.v(TAG,
"Too tall; leaving scrollY=" + scrollY);
} else if ((mTempRect.top-scrollY) < vi.top) {
scrollY -= vi.top - (mTempRect.top-scrollY);
if (DEBUG_INPUT_RESIZE) Log.v(TAG,
"Top covered; scrollY=" + scrollY);
} else if ((mTempRect.bottom-scrollY)
> (mView.getHeight()-vi.bottom)) {
scrollY += (mTempRect.bottom-scrollY)
- (mView.getHeight()-vi.bottom);
if (DEBUG_INPUT_RESIZE) Log.v(TAG,
"Bottom covered; scrollY=" + scrollY);
}
handled = true;
}
}
}
}
if (scrollY != mScrollY) {
if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old="
+ mScrollY + " , new=" + scrollY);
if (!immediate && mResizeBuffer == null) {
if (mScroller == null) {
mScroller = new Scroller(mView.getContext());
}
mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY);
} else if (mScroller != null) {
mScroller.abortAnimation();
}
mScrollY = scrollY;
}
return handled;
}
/**
* @hide
*/
public View getAccessibilityFocusedHost() {
return mAccessibilityFocusedHost;
}
/**
* @hide
*/
public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() {
return mAccessibilityFocusedVirtualView;
}
void setAccessibilityFocus(View view, AccessibilityNodeInfo node) {
// If we have a virtual view with accessibility focus we need
// to clear the focus and invalidate the virtual view bounds.
if (mAccessibilityFocusedVirtualView != null) {
AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView;
View focusHost = mAccessibilityFocusedHost;
focusHost.clearAccessibilityFocusNoCallbacks();
// Wipe the state of the current accessibility focus since
// the call into the provider to clear accessibility focus
// will fire an accessibility event which will end up calling
// this method and we want to have clean state when this
// invocation happens.
mAccessibilityFocusedHost = null;
mAccessibilityFocusedVirtualView = null;
AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider();
if (provider != null) {
// Invalidate the area of the cleared accessibility focus.
focusNode.getBoundsInParent(mTempRect);
focusHost.invalidate(mTempRect);
// Clear accessibility focus in the virtual node.
final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId(
focusNode.getSourceNodeId());
provider.performAction(virtualNodeId,
AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null);
}
focusNode.recycle();
}
if (mAccessibilityFocusedHost != null) {
// Clear accessibility focus in the view.
mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks();
}
// Set the new focus host and node.
mAccessibilityFocusedHost = view;
mAccessibilityFocusedVirtualView = node;
}
public void requestChildFocus(View child, View focused) {
checkThread();
if (DEBUG_INPUT_RESIZE) {
Log.v(TAG, "Request child focus: focus now " + focused);
}
mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, focused);
scheduleTraversals();
mFocusedView = mRealFocusedView = focused;
}
public void clearChildFocus(View child) {
checkThread();
if (DEBUG_INPUT_RESIZE) {
Log.v(TAG, "Clearing child focus");
}
mOldFocusedView = mFocusedView;
// Invoke the listener only if there is no view to take focus
if (focusSearch(null, View.FOCUS_FORWARD) == null) {
mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, null);
}
mFocusedView = mRealFocusedView = null;
}
@Override
public ViewParent getParentForAccessibility() {
return null;
}
public void focusableViewAvailable(View v) {
checkThread();
if (mView != null) {
if (!mView.hasFocus()) {
v.requestFocus();
} else {
// the one case where will transfer focus away from the current one
// is if the current view is a view group that prefers to give focus
// to its children first AND the view is a descendant of it.
mFocusedView = mView.findFocus();
boolean descendantsHaveDibsOnFocus =
(mFocusedView instanceof ViewGroup) &&
(((ViewGroup) mFocusedView).getDescendantFocusability() ==
ViewGroup.FOCUS_AFTER_DESCENDANTS);
if (descendantsHaveDibsOnFocus && isViewDescendantOf(v, mFocusedView)) {
// If a view gets the focus, the listener will be invoked from requestChildFocus()
v.requestFocus();
}
}
}
}
public void recomputeViewAttributes(View child) {
checkThread();
if (mView == child) {
mAttachInfo.mRecomputeGlobalAttributes = true;
if (!mWillDrawSoon) {
scheduleTraversals();
}
}
}
void dispatchDetachedFromWindow() {
if (mView != null && mView.mAttachInfo != null) {
if (mAttachInfo.mHardwareRenderer != null &&
mAttachInfo.mHardwareRenderer.isEnabled()) {
mAttachInfo.mHardwareRenderer.validate();
}
mView.dispatchDetachedFromWindow();
}
mAccessibilityInteractionConnectionManager.ensureNoConnection();
mAccessibilityManager.removeAccessibilityStateChangeListener(
mAccessibilityInteractionConnectionManager);
removeSendWindowContentChangedCallback();
destroyHardwareRenderer();
setAccessibilityFocus(null, null);
mView = null;
mAttachInfo.mRootView = null;
mAttachInfo.mSurface = null;
mSurface.release();
if (mInputQueueCallback != null && mInputQueue != null) {
mInputQueueCallback.onInputQueueDestroyed(mInputQueue);
mInputQueueCallback = null;
mInputQueue = null;
} else if (mInputEventReceiver != null) {
mInputEventReceiver.dispose();
mInputEventReceiver = null;
}
try {
mWindowSession.remove(mWindow);
} catch (RemoteException e) {
}
// Dispose the input channel after removing the window so the Window Manager
// doesn't interpret the input channel being closed as an abnormal termination.
if (mInputChannel != null) {
mInputChannel.dispose();
mInputChannel = null;
}
unscheduleTraversals();
}
void updateConfiguration(Configuration config, boolean force) {
if (DEBUG_CONFIGURATION) Log.v(TAG,
"Applying new config to window "
+ mWindowAttributes.getTitle()
+ ": " + config);
CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded();
if (ci != null) {
config = new Configuration(config);
ci.applyToConfiguration(mNoncompatDensity, config);
}
synchronized (sConfigCallbacks) {
for (int i=sConfigCallbacks.size()-1; i>=0; i--) {
sConfigCallbacks.get(i).onConfigurationChanged(config);
}
}
if (mView != null) {
// At this point the resources have been updated to
// have the most recent config, whatever that is. Use
// the one in them which may be newer.
config = mView.getResources().getConfiguration();
if (force || mLastConfiguration.diff(config) != 0) {
mLastConfiguration.setTo(config);
mView.dispatchConfigurationChanged(config);
}
}
}
/**
* Return true if child is an ancestor of parent, (or equal to the parent).
*/
public static boolean isViewDescendantOf(View child, View parent) {
if (child == parent) {
return true;
}
final ViewParent theParent = child.getParent();
return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent);
}
private static void forceLayout(View view) {
view.forceLayout();
if (view instanceof ViewGroup) {
ViewGroup group = (ViewGroup) view;
final int count = group.getChildCount();
for (int i = 0; i < count; i++) {
forceLayout(group.getChildAt(i));
}
}
}
private final static int MSG_INVALIDATE = 1;
private final static int MSG_INVALIDATE_RECT = 2;
private final static int MSG_DIE = 3;
private final static int MSG_RESIZED = 4;
private final static int MSG_RESIZED_REPORT = 5;
private final static int MSG_WINDOW_FOCUS_CHANGED = 6;
private final static int MSG_DISPATCH_KEY = 7;
private final static int MSG_DISPATCH_APP_VISIBILITY = 8;
private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9;
private final static int MSG_IME_FINISHED_EVENT = 10;
private final static int MSG_DISPATCH_KEY_FROM_IME = 11;
private final static int MSG_FINISH_INPUT_CONNECTION = 12;
private final static int MSG_CHECK_FOCUS = 13;
private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14;
private final static int MSG_DISPATCH_DRAG_EVENT = 15;
private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16;
private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17;
private final static int MSG_UPDATE_CONFIGURATION = 18;
private final static int MSG_PROCESS_INPUT_EVENTS = 19;
private final static int MSG_DISPATCH_SCREEN_STATE = 20;
private final static int MSG_INVALIDATE_DISPLAY_LIST = 21;
private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 22;
private final static int MSG_DISPATCH_DONE_ANIMATING = 23;
private final static int MSG_INVALIDATE_WORLD = 24;
private final static int MSG_WINDOW_MOVED = 25;
final class ViewRootHandler extends Handler {
@Override
public String getMessageName(Message message) {
switch (message.what) {
case MSG_INVALIDATE:
return "MSG_INVALIDATE";
case MSG_INVALIDATE_RECT:
return "MSG_INVALIDATE_RECT";
case MSG_DIE:
return "MSG_DIE";
case MSG_RESIZED:
return "MSG_RESIZED";
case MSG_RESIZED_REPORT:
return "MSG_RESIZED_REPORT";
case MSG_WINDOW_FOCUS_CHANGED:
return "MSG_WINDOW_FOCUS_CHANGED";
case MSG_DISPATCH_KEY:
return "MSG_DISPATCH_KEY";
case MSG_DISPATCH_APP_VISIBILITY:
return "MSG_DISPATCH_APP_VISIBILITY";
case MSG_DISPATCH_GET_NEW_SURFACE:
return "MSG_DISPATCH_GET_NEW_SURFACE";
case MSG_IME_FINISHED_EVENT:
return "MSG_IME_FINISHED_EVENT";
case MSG_DISPATCH_KEY_FROM_IME:
return "MSG_DISPATCH_KEY_FROM_IME";
case MSG_FINISH_INPUT_CONNECTION:
return "MSG_FINISH_INPUT_CONNECTION";
case MSG_CHECK_FOCUS:
return "MSG_CHECK_FOCUS";
case MSG_CLOSE_SYSTEM_DIALOGS:
return "MSG_CLOSE_SYSTEM_DIALOGS";
case MSG_DISPATCH_DRAG_EVENT:
return "MSG_DISPATCH_DRAG_EVENT";
case MSG_DISPATCH_DRAG_LOCATION_EVENT:
return "MSG_DISPATCH_DRAG_LOCATION_EVENT";
case MSG_DISPATCH_SYSTEM_UI_VISIBILITY:
return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY";
case MSG_UPDATE_CONFIGURATION:
return "MSG_UPDATE_CONFIGURATION";
case MSG_PROCESS_INPUT_EVENTS:
return "MSG_PROCESS_INPUT_EVENTS";
case MSG_DISPATCH_SCREEN_STATE:
return "MSG_DISPATCH_SCREEN_STATE";
case MSG_INVALIDATE_DISPLAY_LIST:
return "MSG_INVALIDATE_DISPLAY_LIST";
case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST:
return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST";
case MSG_DISPATCH_DONE_ANIMATING:
return "MSG_DISPATCH_DONE_ANIMATING";
case MSG_WINDOW_MOVED:
return "MSG_WINDOW_MOVED";
}
return super.getMessageName(message);
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_INVALIDATE:
((View) msg.obj).invalidate();
break;
case MSG_INVALIDATE_RECT:
final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj;
info.target.invalidate(info.left, info.top, info.right, info.bottom);
info.release();
break;
case MSG_IME_FINISHED_EVENT:
handleImeFinishedEvent(msg.arg1, msg.arg2 != 0);
break;
case MSG_PROCESS_INPUT_EVENTS:
mProcessInputEventsScheduled = false;
doProcessInputEvents();
break;
case MSG_DISPATCH_APP_VISIBILITY:
handleAppVisibility(msg.arg1 != 0);
break;
case MSG_DISPATCH_GET_NEW_SURFACE:
handleGetNewSurface();
break;
case MSG_RESIZED: {
// Recycled in the fall through...
SomeArgs args = (SomeArgs) msg.obj;
if (mWinFrame.equals(args.arg1)
&& mPendingContentInsets.equals(args.arg2)
&& mPendingVisibleInsets.equals(args.arg3)
&& args.arg4 == null) {
break;
}
} // fall through...
case MSG_RESIZED_REPORT:
if (mAdded) {
SomeArgs args = (SomeArgs) msg.obj;
Configuration config = (Configuration) args.arg4;
if (config != null) {
updateConfiguration(config, false);
}
mWinFrame.set((Rect) args.arg1);
mPendingContentInsets.set((Rect) args.arg2);
mPendingVisibleInsets.set((Rect) args.arg3);
args.recycle();
if (msg.what == MSG_RESIZED_REPORT) {
mReportNextDraw = true;
}
if (mView != null) {
forceLayout(mView);
}
requestLayout();
}
break;
case MSG_WINDOW_MOVED:
if (mAdded) {
final int w = mWinFrame.width();
final int h = mWinFrame.height();
final int l = msg.arg1;
final int t = msg.arg2;
mWinFrame.left = l;
mWinFrame.right = l + w;
mWinFrame.top = t;
mWinFrame.bottom = t + h;
if (mView != null) {
forceLayout(mView);
}
requestLayout();
}
break;
case MSG_WINDOW_FOCUS_CHANGED: {
if (mAdded) {
boolean hasWindowFocus = msg.arg1 != 0;
mAttachInfo.mHasWindowFocus = hasWindowFocus;
profileRendering(hasWindowFocus);
if (hasWindowFocus) {
boolean inTouchMode = msg.arg2 != 0;
ensureTouchModeLocally(inTouchMode);
if (mAttachInfo.mHardwareRenderer != null &&
mSurface != null && mSurface.isValid()) {
mFullRedrawNeeded = true;
try {
if (mAttachInfo.mHardwareRenderer.initializeIfNeeded(
mWidth, mHeight, mHolder.getSurface())) {
mFullRedrawNeeded = true;
}
} catch (Surface.OutOfResourcesException e) {
Log.e(TAG, "OutOfResourcesException locking surface", e);
try {
if (!mWindowSession.outOfMemory(mWindow)) {
Slog.w(TAG, "No processes killed for memory; killing self");
Process.killProcess(Process.myPid());
}
} catch (RemoteException ex) {
}
// Retry in a bit.
sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500);
return;
}
}
}
mLastWasImTarget = WindowManager.LayoutParams
.mayUseInputMethod(mWindowAttributes.flags);
InputMethodManager imm = InputMethodManager.peekInstance();
if (mView != null) {
if (hasWindowFocus && imm != null && mLastWasImTarget) {
imm.startGettingWindowFocus(mView);
}
mAttachInfo.mKeyDispatchState.reset();
mView.dispatchWindowFocusChanged(hasWindowFocus);
}
// Note: must be done after the focus change callbacks,
// so all of the view state is set up correctly.
if (hasWindowFocus) {
if (imm != null && mLastWasImTarget) {
imm.onWindowFocus(mView, mView.findFocus(),
mWindowAttributes.softInputMode,
!mHasHadWindowFocus, mWindowAttributes.flags);
}
// Clear the forward bit. We can just do this directly, since
// the window manager doesn't care about it.
mWindowAttributes.softInputMode &=
~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION;
((WindowManager.LayoutParams)mView.getLayoutParams())
.softInputMode &=
~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION;
mHasHadWindowFocus = true;
}
setAccessibilityFocus(null, null);
if (mView != null && mAccessibilityManager.isEnabled()) {
if (hasWindowFocus) {
mView.sendAccessibilityEvent(
AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
}
}
}
} break;
case MSG_DIE:
doDie();
break;
case MSG_DISPATCH_KEY: {
KeyEvent event = (KeyEvent)msg.obj;
enqueueInputEvent(event, null, 0, true);
} break;
case MSG_DISPATCH_KEY_FROM_IME: {
if (LOCAL_LOGV) Log.v(
TAG, "Dispatching key "
+ msg.obj + " from IME to " + mView);
KeyEvent event = (KeyEvent)msg.obj;
if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) {
// The IME is trying to say this event is from the
// system! Bad bad bad!
//noinspection UnusedAssignment
event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM);
}
enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true);
} break;
case MSG_FINISH_INPUT_CONNECTION: {
InputMethodManager imm = InputMethodManager.peekInstance();
if (imm != null) {
imm.reportFinishInputConnection((InputConnection)msg.obj);
}
} break;
case MSG_CHECK_FOCUS: {
InputMethodManager imm = InputMethodManager.peekInstance();
if (imm != null) {
imm.checkFocus();
}
} break;
case MSG_CLOSE_SYSTEM_DIALOGS: {
if (mView != null) {
mView.onCloseSystemDialogs((String)msg.obj);
}
} break;
case MSG_DISPATCH_DRAG_EVENT:
case MSG_DISPATCH_DRAG_LOCATION_EVENT: {
DragEvent event = (DragEvent)msg.obj;
event.mLocalState = mLocalDragState; // only present when this app called startDrag()
handleDragEvent(event);
} break;
case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: {
handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo)msg.obj);
} break;
case MSG_UPDATE_CONFIGURATION: {
Configuration config = (Configuration)msg.obj;
if (config.isOtherSeqNewer(mLastConfiguration)) {
config = mLastConfiguration;
}
updateConfiguration(config, false);
} break;
case MSG_DISPATCH_SCREEN_STATE: {
if (mView != null) {
handleScreenStateChange(msg.arg1 == 1);
}
} break;
case MSG_INVALIDATE_DISPLAY_LIST: {
invalidateDisplayLists();
} break;
case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: {
setAccessibilityFocus(null, null);
} break;
case MSG_DISPATCH_DONE_ANIMATING: {
handleDispatchDoneAnimating();
} break;
case MSG_INVALIDATE_WORLD: {
if (mView != null) {
invalidateWorld(mView);
}
} break;
}
}
}
final ViewRootHandler mHandler = new ViewRootHandler();
/**
* Something in the current window tells us we need to change the touch mode. For
* example, we are not in touch mode, and the user touches the screen.
*
* If the touch mode has changed, tell the window manager, and handle it locally.
*
* @param inTouchMode Whether we want to be in touch mode.
* @return True if the touch mode changed and focus changed was changed as a result
*/
boolean ensureTouchMode(boolean inTouchMode) {
if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current "
+ "touch mode is " + mAttachInfo.mInTouchMode);
if (mAttachInfo.mInTouchMode == inTouchMode) return false;
// tell the window manager
try {
mWindowSession.setInTouchMode(inTouchMode);
} catch (RemoteException e) {
throw new RuntimeException(e);
}
// handle the change
return ensureTouchModeLocally(inTouchMode);
}
/**
* Ensure that the touch mode for this window is set, and if it is changing,
* take the appropriate action.
* @param inTouchMode Whether we want to be in touch mode.
* @return True if the touch mode changed and focus changed was changed as a result
*/
private boolean ensureTouchModeLocally(boolean inTouchMode) {
if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current "
+ "touch mode is " + mAttachInfo.mInTouchMode);
if (mAttachInfo.mInTouchMode == inTouchMode) return false;
mAttachInfo.mInTouchMode = inTouchMode;
mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode);
return (inTouchMode) ? enterTouchMode() : leaveTouchMode();
}
private boolean enterTouchMode() {
if (mView != null) {
if (mView.hasFocus()) {
// note: not relying on mFocusedView here because this could
// be when the window is first being added, and mFocused isn't
// set yet.
final View focused = mView.findFocus();
if (focused != null && !focused.isFocusableInTouchMode()) {
final ViewGroup ancestorToTakeFocus =
findAncestorToTakeFocusInTouchMode(focused);
if (ancestorToTakeFocus != null) {
// there is an ancestor that wants focus after its descendants that
// is focusable in touch mode.. give it focus
return ancestorToTakeFocus.requestFocus();
} else {
// nothing appropriate to have focus in touch mode, clear it out
mView.unFocus();
mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(focused, null);
mFocusedView = null;
mOldFocusedView = null;
return true;
}
}
}
}
return false;
}
/**
* Find an ancestor of focused that wants focus after its descendants and is
* focusable in touch mode.
* @param focused The currently focused view.
* @return An appropriate view, or null if no such view exists.
*/
private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) {
ViewParent parent = focused.getParent();
while (parent instanceof ViewGroup) {
final ViewGroup vgParent = (ViewGroup) parent;
if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS
&& vgParent.isFocusableInTouchMode()) {
return vgParent;
}
if (vgParent.isRootNamespace()) {
return null;
} else {
parent = vgParent.getParent();
}
}
return null;
}
private boolean leaveTouchMode() {
if (mView != null) {
if (mView.hasFocus()) {
// i learned the hard way to not trust mFocusedView :)
mFocusedView = mView.findFocus();
if (!(mFocusedView instanceof ViewGroup)) {
// some view has focus, let it keep it
return false;
} else if (((ViewGroup)mFocusedView).getDescendantFocusability() !=
ViewGroup.FOCUS_AFTER_DESCENDANTS) {
// some view group has focus, and doesn't prefer its children
// over itself for focus, so let them keep it.
return false;
}
}
// find the best view to give focus to in this brave new non-touch-mode
// world
final View focused = focusSearch(null, View.FOCUS_DOWN);
if (focused != null) {
return focused.requestFocus(View.FOCUS_DOWN);
}
}
return false;
}
private void deliverInputEvent(QueuedInputEvent q) {
Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent");
try {
if (q.mEvent instanceof KeyEvent) {
deliverKeyEvent(q);
} else {
final int source = q.mEvent.getSource();
if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) {
deliverPointerEvent(q);
} else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) {
deliverTrackballEvent(q);
} else {
deliverGenericMotionEvent(q);
}
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_VIEW);
}
}
private void deliverPointerEvent(QueuedInputEvent q) {
final MotionEvent event = (MotionEvent)q.mEvent;
final boolean isTouchEvent = event.isTouchEvent();
if (mInputEventConsistencyVerifier != null) {
if (isTouchEvent) {
mInputEventConsistencyVerifier.onTouchEvent(event, 0);
} else {
mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0);
}
}
// If there is no view, then the event will not be handled.
if (mView == null || !mAdded) {
finishInputEvent(q, false);
return;
}
// Translate the pointer event for compatibility, if needed.
if (mTranslator != null) {
mTranslator.translateEventInScreenToAppWindow(event);
}
// Enter touch mode on down or scroll.
final int action = event.getAction();
if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) {
ensureTouchMode(true);
}
// Offset the scroll position.
if (mCurScrollY != 0) {
event.offsetLocation(0, mCurScrollY);
}
if (MEASURE_LATENCY) {
lt.sample("A Dispatching PointerEvents", System.nanoTime() - event.getEventTimeNano());
}
// Remember the touch position for possible drag-initiation.
if (isTouchEvent) {
mLastTouchPoint.x = event.getRawX();
mLastTouchPoint.y = event.getRawY();
}
// Dispatch touch to view hierarchy.
boolean handled = mView.dispatchPointerEvent(event);
if (MEASURE_LATENCY) {
lt.sample("B Dispatched PointerEvents ", System.nanoTime() - event.getEventTimeNano());
}
if (handled) {
finishInputEvent(q, true);
return;
}
// Pointer event was unhandled.
finishInputEvent(q, false);
}
private void deliverTrackballEvent(QueuedInputEvent q) {
final MotionEvent event = (MotionEvent)q.mEvent;
if (mInputEventConsistencyVerifier != null) {
mInputEventConsistencyVerifier.onTrackballEvent(event, 0);
}
if (mView != null && mAdded && (q.mFlags & QueuedInputEvent.FLAG_DELIVER_POST_IME) == 0) {
if (LOCAL_LOGV)
Log.v(TAG, "Dispatching trackball " + event + " to " + mView);
// Dispatch to the IME before propagating down the view hierarchy.
// The IME will eventually call back into handleImeFinishedEvent.
if (mLastWasImTarget) {
InputMethodManager imm = InputMethodManager.peekInstance();
if (imm != null) {
final int seq = event.getSequenceNumber();
if (DEBUG_IMF)
Log.v(TAG, "Sending trackball event to IME: seq="
+ seq + " event=" + event);
imm.dispatchTrackballEvent(mView.getContext(), seq, event,
mInputMethodCallback);
return;
}
}
}
// Not dispatching to IME, continue with post IME actions.
deliverTrackballEventPostIme(q);
}
private void deliverTrackballEventPostIme(QueuedInputEvent q) {
final MotionEvent event = (MotionEvent) q.mEvent;
// If there is no view, then the event will not be handled.
if (mView == null || !mAdded) {
finishInputEvent(q, false);
return;
}
// Deliver the trackball event to the view.
if (mView.dispatchTrackballEvent(event)) {
// If we reach this, we delivered a trackball event to mView and
// mView consumed it. Because we will not translate the trackball
// event into a key event, touch mode will not exit, so we exit
// touch mode here.
ensureTouchMode(false);
finishInputEvent(q, true);
mLastTrackballTime = Integer.MIN_VALUE;
return;
}
// Translate the trackball event into DPAD keys and try to deliver those.
final TrackballAxis x = mTrackballAxisX;
final TrackballAxis y = mTrackballAxisY;
long curTime = SystemClock.uptimeMillis();
if ((mLastTrackballTime + MAX_TRACKBALL_DELAY) < curTime) {
// It has been too long since the last movement,
// so restart at the beginning.
x.reset(0);
y.reset(0);
mLastTrackballTime = curTime;
}
final int action = event.getAction();
final int metaState = event.getMetaState();
switch (action) {
case MotionEvent.ACTION_DOWN:
x.reset(2);
y.reset(2);
enqueueInputEvent(new KeyEvent(curTime, curTime,
KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState,
KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK,
InputDevice.SOURCE_KEYBOARD));
break;
case MotionEvent.ACTION_UP:
x.reset(2);
y.reset(2);
enqueueInputEvent(new KeyEvent(curTime, curTime,
KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState,
KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK,
InputDevice.SOURCE_KEYBOARD));
break;
}
if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + x.position + " step="
+ x.step + " dir=" + x.dir + " acc=" + x.acceleration
+ " move=" + event.getX()
+ " / Y=" + y.position + " step="
+ y.step + " dir=" + y.dir + " acc=" + y.acceleration
+ " move=" + event.getY());
final float xOff = x.collect(event.getX(), event.getEventTime(), "X");
final float yOff = y.collect(event.getY(), event.getEventTime(), "Y");
// Generate DPAD events based on the trackball movement.
// We pick the axis that has moved the most as the direction of
// the DPAD. When we generate DPAD events for one axis, then the
// other axis is reset -- we don't want to perform DPAD jumps due
// to slight movements in the trackball when making major movements
// along the other axis.
int keycode = 0;
int movement = 0;
float accel = 1;
if (xOff > yOff) {
movement = x.generate((2/event.getXPrecision()));
if (movement != 0) {
keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT
: KeyEvent.KEYCODE_DPAD_LEFT;
accel = x.acceleration;
y.reset(2);
}
} else if (yOff > 0) {
movement = y.generate((2/event.getYPrecision()));
if (movement != 0) {
keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN
: KeyEvent.KEYCODE_DPAD_UP;
accel = y.acceleration;
x.reset(2);
}
}
if (keycode != 0) {
if (movement < 0) movement = -movement;
int accelMovement = (int)(movement * accel);
if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement
+ " accelMovement=" + accelMovement
+ " accel=" + accel);
if (accelMovement > movement) {
if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: "
+ keycode);
movement--;
int repeatCount = accelMovement - movement;
enqueueInputEvent(new KeyEvent(curTime, curTime,
KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState,
KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK,
InputDevice.SOURCE_KEYBOARD));
}
while (movement > 0) {
if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: "
+ keycode);
movement--;
curTime = SystemClock.uptimeMillis();
enqueueInputEvent(new KeyEvent(curTime, curTime,
KeyEvent.ACTION_DOWN, keycode, 0, metaState,
KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK,
InputDevice.SOURCE_KEYBOARD));
enqueueInputEvent(new KeyEvent(curTime, curTime,
KeyEvent.ACTION_UP, keycode, 0, metaState,
KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK,
InputDevice.SOURCE_KEYBOARD));
}
mLastTrackballTime = curTime;
}
// Unfortunately we can't tell whether the application consumed the keys, so
// we always consider the trackball event handled.
finishInputEvent(q, true);
}
private void deliverGenericMotionEvent(QueuedInputEvent q) {
final MotionEvent event = (MotionEvent)q.mEvent;
if (mInputEventConsistencyVerifier != null) {
mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0);
}
if (mView != null && mAdded && (q.mFlags & QueuedInputEvent.FLAG_DELIVER_POST_IME) == 0) {
if (LOCAL_LOGV)
Log.v(TAG, "Dispatching generic motion " + event + " to " + mView);
// Dispatch to the IME before propagating down the view hierarchy.
// The IME will eventually call back into handleImeFinishedEvent.
if (mLastWasImTarget) {
InputMethodManager imm = InputMethodManager.peekInstance();
if (imm != null) {
final int seq = event.getSequenceNumber();
if (DEBUG_IMF)
Log.v(TAG, "Sending generic motion event to IME: seq="
+ seq + " event=" + event);
imm.dispatchGenericMotionEvent(mView.getContext(), seq, event,
mInputMethodCallback);
return;
}
}
}
// Not dispatching to IME, continue with post IME actions.
deliverGenericMotionEventPostIme(q);
}
private void deliverGenericMotionEventPostIme(QueuedInputEvent q) {
final MotionEvent event = (MotionEvent) q.mEvent;
final boolean isJoystick = (event.getSource() & InputDevice.SOURCE_CLASS_JOYSTICK) != 0;
// If there is no view, then the event will not be handled.
if (mView == null || !mAdded) {
if (isJoystick) {
updateJoystickDirection(event, false);
}
finishInputEvent(q, false);
return;
}
// Deliver the event to the view.
if (mView.dispatchGenericMotionEvent(event)) {
if (isJoystick) {
updateJoystickDirection(event, false);
}
finishInputEvent(q, true);
return;
}
if (isJoystick) {
// Translate the joystick event into DPAD keys and try to deliver
// those.
updateJoystickDirection(event, true);
finishInputEvent(q, true);
} else {
finishInputEvent(q, false);
}
}
private void updateJoystickDirection(MotionEvent event, boolean synthesizeNewKeys) {
final long time = event.getEventTime();
final int metaState = event.getMetaState();
final int deviceId = event.getDeviceId();
final int source = event.getSource();
int xDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_X));
if (xDirection == 0) {
xDirection = joystickAxisValueToDirection(event.getX());
}
int yDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_Y));
if (yDirection == 0) {
yDirection = joystickAxisValueToDirection(event.getY());
}
if (xDirection != mLastJoystickXDirection) {
if (mLastJoystickXKeyCode != 0) {
enqueueInputEvent(new KeyEvent(time, time,
KeyEvent.ACTION_UP, mLastJoystickXKeyCode, 0, metaState,
deviceId, 0, KeyEvent.FLAG_FALLBACK, source));
mLastJoystickXKeyCode = 0;
}
mLastJoystickXDirection = xDirection;
if (xDirection != 0 && synthesizeNewKeys) {
mLastJoystickXKeyCode = xDirection > 0
? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT;
enqueueInputEvent(new KeyEvent(time, time,
KeyEvent.ACTION_DOWN, mLastJoystickXKeyCode, 0, metaState,
deviceId, 0, KeyEvent.FLAG_FALLBACK, source));
}
}
if (yDirection != mLastJoystickYDirection) {
if (mLastJoystickYKeyCode != 0) {
enqueueInputEvent(new KeyEvent(time, time,
KeyEvent.ACTION_UP, mLastJoystickYKeyCode, 0, metaState,
deviceId, 0, KeyEvent.FLAG_FALLBACK, source));
mLastJoystickYKeyCode = 0;
}
mLastJoystickYDirection = yDirection;
if (yDirection != 0 && synthesizeNewKeys) {
mLastJoystickYKeyCode = yDirection > 0
? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP;
enqueueInputEvent(new KeyEvent(time, time,
KeyEvent.ACTION_DOWN, mLastJoystickYKeyCode, 0, metaState,
deviceId, 0, KeyEvent.FLAG_FALLBACK, source));
}
}
}
private static int joystickAxisValueToDirection(float value) {
if (value >= 0.5f) {
return 1;
} else if (value <= -0.5f) {
return -1;
} else {
return 0;
}
}
/**
* Returns true if the key is used for keyboard navigation.
* @param keyEvent The key event.
* @return True if the key is used for keyboard navigation.
*/
private static boolean isNavigationKey(KeyEvent keyEvent) {
switch (keyEvent.getKeyCode()) {
case KeyEvent.KEYCODE_DPAD_LEFT:
case KeyEvent.KEYCODE_DPAD_RIGHT:
case KeyEvent.KEYCODE_DPAD_UP:
case KeyEvent.KEYCODE_DPAD_DOWN:
case KeyEvent.KEYCODE_DPAD_CENTER:
case KeyEvent.KEYCODE_PAGE_UP:
case KeyEvent.KEYCODE_PAGE_DOWN:
case KeyEvent.KEYCODE_MOVE_HOME:
case KeyEvent.KEYCODE_MOVE_END:
case KeyEvent.KEYCODE_TAB:
case KeyEvent.KEYCODE_SPACE:
case KeyEvent.KEYCODE_ENTER:
return true;
}
return false;
}
/**
* Returns true if the key is used for typing.
* @param keyEvent The key event.
* @return True if the key is used for typing.
*/
private static boolean isTypingKey(KeyEvent keyEvent) {
return keyEvent.getUnicodeChar() > 0;
}
/**
* See if the key event means we should leave touch mode (and leave touch mode if so).
* @param event The key event.
* @return Whether this key event should be consumed (meaning the act of
* leaving touch mode alone is considered the event).
*/
private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) {
// Only relevant in touch mode.
if (!mAttachInfo.mInTouchMode) {
return false;
}
// Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP.
final int action = event.getAction();
if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) {
return false;
}
// Don't leave touch mode if the IME told us not to.
if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) {
return false;
}
// If the key can be used for keyboard navigation then leave touch mode
// and select a focused view if needed (in ensureTouchMode).
// When a new focused view is selected, we consume the navigation key because
// navigation doesn't make much sense unless a view already has focus so
// the key's purpose is to set focus.
if (isNavigationKey(event)) {
return ensureTouchMode(false);
}
// If the key can be used for typing then leave touch mode
// and select a focused view if needed (in ensureTouchMode).
// Always allow the view to process the typing key.
if (isTypingKey(event)) {
ensureTouchMode(false);
return false;
}
return false;
}
private void deliverKeyEvent(QueuedInputEvent q) {
final KeyEvent event = (KeyEvent)q.mEvent;
if (mInputEventConsistencyVerifier != null) {
mInputEventConsistencyVerifier.onKeyEvent(event, 0);
}
if (mView != null && mAdded && (q.mFlags & QueuedInputEvent.FLAG_DELIVER_POST_IME) == 0) {
if (LOCAL_LOGV) Log.v(TAG, "Dispatching key " + event + " to " + mView);
// Perform predispatching before the IME.
if (mView.dispatchKeyEventPreIme(event)) {
finishInputEvent(q, true);
return;
}
// Dispatch to the IME before propagating down the view hierarchy.
// The IME will eventually call back into handleImeFinishedEvent.
if (mLastWasImTarget) {
InputMethodManager imm = InputMethodManager.peekInstance();
if (imm != null) {
final int seq = event.getSequenceNumber();
if (DEBUG_IMF) Log.v(TAG, "Sending key event to IME: seq="
+ seq + " event=" + event);
imm.dispatchKeyEvent(mView.getContext(), seq, event, mInputMethodCallback);
return;
}
}
}
// Not dispatching to IME, continue with post IME actions.
deliverKeyEventPostIme(q);
}
void handleImeFinishedEvent(int seq, boolean handled) {
final QueuedInputEvent q = mCurrentInputEvent;
if (q != null && q.mEvent.getSequenceNumber() == seq) {
if (DEBUG_IMF) {
Log.v(TAG, "IME finished event: seq=" + seq
+ " handled=" + handled + " event=" + q);
}
if (handled) {
finishInputEvent(q, true);
} else {
if (q.mEvent instanceof KeyEvent) {
KeyEvent event = (KeyEvent)q.mEvent;
if (event.getAction() != KeyEvent.ACTION_UP) {
// If the window doesn't currently have input focus, then drop
// this event. This could be an event that came back from the
// IME dispatch but the window has lost focus in the meantime.
if (!mAttachInfo.mHasWindowFocus) {
Slog.w(TAG, "Dropping event due to no window focus: " + event);
finishInputEvent(q, true);
return;
}
}
deliverKeyEventPostIme(q);
} else {
MotionEvent event = (MotionEvent)q.mEvent;
if (event.getAction() != MotionEvent.ACTION_CANCEL
&& event.getAction() != MotionEvent.ACTION_UP) {
// If the window doesn't currently have input focus, then drop
// this event. This could be an event that came back from the
// IME dispatch but the window has lost focus in the meantime.
if (!mAttachInfo.mHasWindowFocus) {
Slog.w(TAG, "Dropping event due to no window focus: " + event);
finishInputEvent(q, true);
return;
}
}
final int source = q.mEvent.getSource();
if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) {
deliverTrackballEventPostIme(q);
} else {
deliverGenericMotionEventPostIme(q);
}
}
}
} else {
if (DEBUG_IMF) {
Log.v(TAG, "IME finished event: seq=" + seq
+ " handled=" + handled + ", event not found!");
}
}
}
private void deliverKeyEventPostIme(QueuedInputEvent q) {
final KeyEvent event = (KeyEvent)q.mEvent;
// If the view went away, then the event will not be handled.
if (mView == null || !mAdded) {
finishInputEvent(q, false);
return;
}
// If the key's purpose is to exit touch mode then we consume it and consider it handled.
if (checkForLeavingTouchModeAndConsume(event)) {
finishInputEvent(q, true);
return;
}
// Make sure the fallback event policy sees all keys that will be delivered to the
// view hierarchy.
mFallbackEventHandler.preDispatchKeyEvent(event);
// Deliver the key to the view hierarchy.
if (mView.dispatchKeyEvent(event)) {
finishInputEvent(q, true);
return;
}
// If the Control modifier is held, try to interpret the key as a shortcut.
if (event.getAction() == KeyEvent.ACTION_DOWN
&& event.isCtrlPressed()
&& event.getRepeatCount() == 0
&& !KeyEvent.isModifierKey(event.getKeyCode())) {
if (mView.dispatchKeyShortcutEvent(event)) {
finishInputEvent(q, true);
return;
}
}
// Apply the fallback event policy.
if (mFallbackEventHandler.dispatchKeyEvent(event)) {
finishInputEvent(q, true);
return;
}
// Handle automatic focus changes.
if (event.getAction() == KeyEvent.ACTION_DOWN) {
int direction = 0;
switch (event.getKeyCode()) {
case KeyEvent.KEYCODE_DPAD_LEFT:
if (event.hasNoModifiers()) {
direction = View.FOCUS_LEFT;
}
break;
case KeyEvent.KEYCODE_DPAD_RIGHT:
if (event.hasNoModifiers()) {
direction = View.FOCUS_RIGHT;
}
break;
case KeyEvent.KEYCODE_DPAD_UP:
if (event.hasNoModifiers()) {
direction = View.FOCUS_UP;
}
break;
case KeyEvent.KEYCODE_DPAD_DOWN:
if (event.hasNoModifiers()) {
direction = View.FOCUS_DOWN;
}
break;
case KeyEvent.KEYCODE_TAB:
if (event.hasNoModifiers()) {
direction = View.FOCUS_FORWARD;
} else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
direction = View.FOCUS_BACKWARD;
}
break;
}
if (direction != 0) {
View focused = mView.findFocus();
if (focused != null) {
View v = focused.focusSearch(direction);
if (v != null && v != focused) {
// do the math the get the interesting rect
// of previous focused into the coord system of
// newly focused view
focused.getFocusedRect(mTempRect);
if (mView instanceof ViewGroup) {
((ViewGroup) mView).offsetDescendantRectToMyCoords(
focused, mTempRect);
((ViewGroup) mView).offsetRectIntoDescendantCoords(
v, mTempRect);
}
if (v.requestFocus(direction, mTempRect)) {
playSoundEffect(SoundEffectConstants
.getContantForFocusDirection(direction));
finishInputEvent(q, true);
return;
}
}
// Give the focused view a last chance to handle the dpad key.
if (mView.dispatchUnhandledMove(focused, direction)) {
finishInputEvent(q, true);
return;
}
}
}
}
// Key was unhandled.
finishInputEvent(q, false);
}
/* drag/drop */
void setLocalDragState(Object obj) {
mLocalDragState = obj;
}
private void handleDragEvent(DragEvent event) {
// From the root, only drag start/end/location are dispatched. entered/exited
// are determined and dispatched by the viewgroup hierarchy, who then report
// that back here for ultimate reporting back to the framework.
if (mView != null && mAdded) {
final int what = event.mAction;
if (what == DragEvent.ACTION_DRAG_EXITED) {
// A direct EXITED event means that the window manager knows we've just crossed
// a window boundary, so the current drag target within this one must have
// just been exited. Send it the usual notifications and then we're done
// for now.
mView.dispatchDragEvent(event);
} else {
// Cache the drag description when the operation starts, then fill it in
// on subsequent calls as a convenience
if (what == DragEvent.ACTION_DRAG_STARTED) {
mCurrentDragView = null; // Start the current-recipient tracking
mDragDescription = event.mClipDescription;
} else {
event.mClipDescription = mDragDescription;
}
// For events with a [screen] location, translate into window coordinates
if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) {
mDragPoint.set(event.mX, event.mY);
if (mTranslator != null) {
mTranslator.translatePointInScreenToAppWindow(mDragPoint);
}
if (mCurScrollY != 0) {
mDragPoint.offset(0, mCurScrollY);
}
event.mX = mDragPoint.x;
event.mY = mDragPoint.y;
}
// Remember who the current drag target is pre-dispatch
final View prevDragView = mCurrentDragView;
// Now dispatch the drag/drop event
boolean result = mView.dispatchDragEvent(event);
// If we changed apparent drag target, tell the OS about it
if (prevDragView != mCurrentDragView) {
try {
if (prevDragView != null) {
mWindowSession.dragRecipientExited(mWindow);
}
if (mCurrentDragView != null) {
mWindowSession.dragRecipientEntered(mWindow);
}
} catch (RemoteException e) {
Slog.e(TAG, "Unable to note drag target change");
}
}
// Report the drop result when we're done
if (what == DragEvent.ACTION_DROP) {
mDragDescription = null;
try {
Log.i(TAG, "Reporting drop result: " + result);
mWindowSession.reportDropResult(mWindow, result);
} catch (RemoteException e) {
Log.e(TAG, "Unable to report drop result");
}
}
// When the drag operation ends, release any local state object
// that may have been in use
if (what == DragEvent.ACTION_DRAG_ENDED) {
setLocalDragState(null);
}
}
}
event.recycle();
}
public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) {
if (mSeq != args.seq) {
// The sequence has changed, so we need to update our value and make
// sure to do a traversal afterward so the window manager is given our
// most recent data.
mSeq = args.seq;
mAttachInfo.mForceReportNewAttributes = true;
scheduleTraversals();
}
if (mView == null) return;
if (args.localChanges != 0) {
mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges);
}
if (mAttachInfo != null) {
int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS;
if (visibility != mAttachInfo.mGlobalSystemUiVisibility) {
mAttachInfo.mGlobalSystemUiVisibility = visibility;
mView.dispatchSystemUiVisibilityChanged(visibility);
}
}
}
public void handleDispatchDoneAnimating() {
if (mWindowsAnimating) {
mWindowsAnimating = false;
if (!mDirty.isEmpty() || mIsAnimating) {
scheduleTraversals();
}
}
}
public void getLastTouchPoint(Point outLocation) {
outLocation.x = (int) mLastTouchPoint.x;
outLocation.y = (int) mLastTouchPoint.y;
}
public void setDragFocus(View newDragTarget) {
if (mCurrentDragView != newDragTarget) {
mCurrentDragView = newDragTarget;
}
}
private AudioManager getAudioManager() {
if (mView == null) {
throw new IllegalStateException("getAudioManager called when there is no mView");
}
if (mAudioManager == null) {
mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE);
}
return mAudioManager;
}
public AccessibilityInteractionController getAccessibilityInteractionController() {
if (mView == null) {
throw new IllegalStateException("getAccessibilityInteractionController"
+ " called when there is no mView");
}
if (mAccessibilityInteractionController == null) {
mAccessibilityInteractionController = new AccessibilityInteractionController(this);
}
return mAccessibilityInteractionController;
}
private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility,
boolean insetsPending) throws RemoteException {
float appScale = mAttachInfo.mApplicationScale;
boolean restore = false;
if (params != null && mTranslator != null) {
restore = true;
params.backup();
mTranslator.translateWindowLayout(params);
}
if (params != null) {
if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params);
}
mPendingConfiguration.seq = 0;
//Log.d(TAG, ">>>>>> CALLING relayout");
if (params != null && mOrigWindowType != params.type) {
// For compatibility with old apps, don't crash here.
if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
Slog.w(TAG, "Window type can not be changed after "
+ "the window is added; ignoring change of " + mView);
params.type = mOrigWindowType;
}
}
int relayoutResult = mWindowSession.relayout(
mWindow, mSeq, params,
(int) (mView.getMeasuredWidth() * appScale + 0.5f),
(int) (mView.getMeasuredHeight() * appScale + 0.5f),
viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0,
mWinFrame, mPendingContentInsets, mPendingVisibleInsets,
mPendingConfiguration, mSurface);
//Log.d(TAG, "<<<<<< BACK FROM relayout");
if (restore) {
params.restore();
}
if (mTranslator != null) {
mTranslator.translateRectInScreenToAppWinFrame(mWinFrame);
mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets);
mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets);
}
return relayoutResult;
}
/**
* {@inheritDoc}
*/
public void playSoundEffect(int effectId) {
checkThread();
try {
final AudioManager audioManager = getAudioManager();
switch (effectId) {
case SoundEffectConstants.CLICK:
audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK);
return;
case SoundEffectConstants.NAVIGATION_DOWN:
audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN);
return;
case SoundEffectConstants.NAVIGATION_LEFT:
audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT);
return;
case SoundEffectConstants.NAVIGATION_RIGHT:
audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT);
return;
case SoundEffectConstants.NAVIGATION_UP:
audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP);
return;
default:
throw new IllegalArgumentException("unknown effect id " + effectId +
" not defined in " + SoundEffectConstants.class.getCanonicalName());
}
} catch (IllegalStateException e) {
// Exception thrown by getAudioManager() when mView is null
Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e);
e.printStackTrace();
}
}
/**
* {@inheritDoc}
*/
public boolean performHapticFeedback(int effectId, boolean always) {
try {
return mWindowSession.performHapticFeedback(mWindow, effectId, always);
} catch (RemoteException e) {
return false;
}
}
/**
* {@inheritDoc}
*/
public View focusSearch(View focused, int direction) {
checkThread();
if (!(mView instanceof ViewGroup)) {
return null;
}
return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction);
}
public void debug() {
mView.debug();
}
public void dumpGfxInfo(int[] info) {
info[0] = info[1] = 0;
if (mView != null) {
getGfxInfo(mView, info);
}
}
private static void getGfxInfo(View view, int[] info) {
DisplayList displayList = view.mDisplayList;
info[0]++;
if (displayList != null) {
info[1] += displayList.getSize();
}
if (view instanceof ViewGroup) {
ViewGroup group = (ViewGroup) view;
int count = group.getChildCount();
for (int i = 0; i < count; i++) {
getGfxInfo(group.getChildAt(i), info);
}
}
}
public void die(boolean immediate) {
// Make sure we do execute immediately if we are in the middle of a traversal or the damage
// done by dispatchDetachedFromWindow will cause havoc on return.
if (immediate && !mIsInTraversal) {
doDie();
} else {
if (!mIsDrawing) {
destroyHardwareRenderer();
} else {
Log.e(TAG, "Attempting to destroy the window while drawing!\n" +
" window=" + this + ", title=" + mWindowAttributes.getTitle());
}
mHandler.sendEmptyMessage(MSG_DIE);
}
}
void doDie() {
checkThread();
if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface);
synchronized (this) {
if (mAdded) {
dispatchDetachedFromWindow();
}
if (mAdded && !mFirst) {
destroyHardwareRenderer();
if (mView != null) {
int viewVisibility = mView.getVisibility();
boolean viewVisibilityChanged = mViewVisibility != viewVisibility;
if (mWindowAttributesChanged || viewVisibilityChanged) {
// If layout params have been changed, first give them
// to the window manager to make sure it has the correct
// animation info.
try {
if ((relayoutWindow(mWindowAttributes, viewVisibility, false)
& WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) {
mWindowSession.finishDrawing(mWindow);
}
} catch (RemoteException e) {
}
}
mSurface.release();
}
}
mAdded = false;
}
}
public void requestUpdateConfiguration(Configuration config) {
Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config);
mHandler.sendMessage(msg);
}
public void loadSystemProperties() {
boolean layout = SystemProperties.getBoolean(
View.DEBUG_LAYOUT_PROPERTY, false);
if (layout != mAttachInfo.mDebugLayout) {
mAttachInfo.mDebugLayout = layout;
if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) {
mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200);
}
}
}
private void destroyHardwareRenderer() {
AttachInfo attachInfo = mAttachInfo;
HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer;
if (hardwareRenderer != null) {
if (mView != null) {
hardwareRenderer.destroyHardwareResources(mView);
}
hardwareRenderer.destroy(true);
hardwareRenderer.setRequested(false);
attachInfo.mHardwareRenderer = null;
attachInfo.mHardwareAccelerated = false;
}
}
void dispatchImeFinishedEvent(int seq, boolean handled) {
Message msg = mHandler.obtainMessage(MSG_IME_FINISHED_EVENT);
msg.arg1 = seq;
msg.arg2 = handled ? 1 : 0;
msg.setAsynchronous(true);
mHandler.sendMessage(msg);
}
public void dispatchFinishInputConnection(InputConnection connection) {
Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection);
mHandler.sendMessage(msg);
}
public void dispatchResized(Rect frame, Rect contentInsets,
Rect visibleInsets, boolean reportDraw, Configuration newConfig) {
if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString()
+ " contentInsets=" + contentInsets.toShortString()
+ " visibleInsets=" + visibleInsets.toShortString()
+ " reportDraw=" + reportDraw);
Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED);
if (mTranslator != null) {
mTranslator.translateRectInScreenToAppWindow(frame);
mTranslator.translateRectInScreenToAppWindow(contentInsets);
mTranslator.translateRectInScreenToAppWindow(visibleInsets);
}
SomeArgs args = SomeArgs.obtain();
final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid());
args.arg1 = sameProcessCall ? new Rect(frame) : frame;
args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets;
args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets;
args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig;
msg.obj = args;
mHandler.sendMessage(msg);
}
public void dispatchMoved(int newX, int newY) {
if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY);
if (mTranslator != null) {
PointF point = new PointF(newX, newY);
mTranslator.translatePointInScreenToAppWindow(point);
newX = (int) (point.x + 0.5);
newY = (int) (point.y + 0.5);
}
Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY);
mHandler.sendMessage(msg);
}
/**
* Represents a pending input event that is waiting in a queue.
*
* Input events are processed in serial order by the timestamp specified by
* {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers
* one input event to the application at a time and waits for the application
* to finish handling it before delivering the next one.
*
* However, because the application or IME can synthesize and inject multiple
* key events at a time without going through the input dispatcher, we end up
* needing a queue on the application's side.
*/
private static final class QueuedInputEvent {
public static final int FLAG_DELIVER_POST_IME = 1;
public QueuedInputEvent mNext;
public InputEvent mEvent;
public InputEventReceiver mReceiver;
public int mFlags;
}
private QueuedInputEvent obtainQueuedInputEvent(InputEvent event,
InputEventReceiver receiver, int flags) {
QueuedInputEvent q = mQueuedInputEventPool;
if (q != null) {
mQueuedInputEventPoolSize -= 1;
mQueuedInputEventPool = q.mNext;
q.mNext = null;
} else {
q = new QueuedInputEvent();
}
q.mEvent = event;
q.mReceiver = receiver;
q.mFlags = flags;
return q;
}
private void recycleQueuedInputEvent(QueuedInputEvent q) {
q.mEvent = null;
q.mReceiver = null;
if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) {
mQueuedInputEventPoolSize += 1;
q.mNext = mQueuedInputEventPool;
mQueuedInputEventPool = q;
}
}
void enqueueInputEvent(InputEvent event) {
enqueueInputEvent(event, null, 0, false);
}
void enqueueInputEvent(InputEvent event,
InputEventReceiver receiver, int flags, boolean processImmediately) {
QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags);
// Always enqueue the input event in order, regardless of its time stamp.
// We do this because the application or the IME may inject key events
// in response to touch events and we want to ensure that the injected keys
// are processed in the order they were received and we cannot trust that
// the time stamp of injected events are monotonic.
QueuedInputEvent last = mFirstPendingInputEvent;
if (last == null) {
mFirstPendingInputEvent = q;
} else {
while (last.mNext != null) {
last = last.mNext;
}
last.mNext = q;
}
if (processImmediately) {
doProcessInputEvents();
} else {
scheduleProcessInputEvents();
}
}
private void scheduleProcessInputEvents() {
if (!mProcessInputEventsScheduled) {
mProcessInputEventsScheduled = true;
Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS);
msg.setAsynchronous(true);
mHandler.sendMessage(msg);
}
}
void doProcessInputEvents() {
while (mCurrentInputEvent == null && mFirstPendingInputEvent != null) {
QueuedInputEvent q = mFirstPendingInputEvent;
mFirstPendingInputEvent = q.mNext;
q.mNext = null;
mCurrentInputEvent = q;
deliverInputEvent(q);
}
// We are done processing all input events that we can process right now
// so we can clear the pending flag immediately.
if (mProcessInputEventsScheduled) {
mProcessInputEventsScheduled = false;
mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS);
}
}
private void finishInputEvent(QueuedInputEvent q, boolean handled) {
if (q != mCurrentInputEvent) {
throw new IllegalStateException("finished input event out of order");
}
if (q.mReceiver != null) {
q.mReceiver.finishInputEvent(q.mEvent, handled);
} else {
q.mEvent.recycleIfNeededAfterDispatch();
}
recycleQueuedInputEvent(q);
mCurrentInputEvent = null;
if (mFirstPendingInputEvent != null) {
scheduleProcessInputEvents();
}
}
void scheduleConsumeBatchedInput() {
if (!mConsumeBatchedInputScheduled) {
mConsumeBatchedInputScheduled = true;
mChoreographer.postCallback(Choreographer.CALLBACK_INPUT,
mConsumedBatchedInputRunnable, null);
}
}
void unscheduleConsumeBatchedInput() {
if (mConsumeBatchedInputScheduled) {
mConsumeBatchedInputScheduled = false;
mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT,
mConsumedBatchedInputRunnable, null);
}
}
void doConsumeBatchedInput(long frameTimeNanos) {
if (mConsumeBatchedInputScheduled) {
mConsumeBatchedInputScheduled = false;
if (mInputEventReceiver != null) {
mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos);
}
doProcessInputEvents();
}
}
final class TraversalRunnable implements Runnable {
@Override
public void run() {
doTraversal();
}
}
final TraversalRunnable mTraversalRunnable = new TraversalRunnable();
final class WindowInputEventReceiver extends InputEventReceiver {
public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) {
super(inputChannel, looper);
}
@Override
public void onInputEvent(InputEvent event) {
enqueueInputEvent(event, this, 0, true);
}
@Override
public void onBatchedInputEventPending() {
scheduleConsumeBatchedInput();
}
@Override
public void dispose() {
unscheduleConsumeBatchedInput();
super.dispose();
}
}
WindowInputEventReceiver mInputEventReceiver;
final class ConsumeBatchedInputRunnable implements Runnable {
@Override
public void run() {
doConsumeBatchedInput(mChoreographer.getFrameTimeNanos());
}
}
final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable =
new ConsumeBatchedInputRunnable();
boolean mConsumeBatchedInputScheduled;
final class InvalidateOnAnimationRunnable implements Runnable {
private boolean mPosted;
private ArrayList<View> mViews = new ArrayList<View>();
private ArrayList<AttachInfo.InvalidateInfo> mViewRects =
new ArrayList<AttachInfo.InvalidateInfo>();
private View[] mTempViews;
private AttachInfo.InvalidateInfo[] mTempViewRects;
public void addView(View view) {
synchronized (this) {
mViews.add(view);
postIfNeededLocked();
}
}
public void addViewRect(AttachInfo.InvalidateInfo info) {
synchronized (this) {
mViewRects.add(info);
postIfNeededLocked();
}
}
public void removeView(View view) {
synchronized (this) {
mViews.remove(view);
for (int i = mViewRects.size(); i-- > 0; ) {
AttachInfo.InvalidateInfo info = mViewRects.get(i);
if (info.target == view) {
mViewRects.remove(i);
info.release();
}
}
if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) {
mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null);
mPosted = false;
}
}
}
@Override
public void run() {
final int viewCount;
final int viewRectCount;
synchronized (this) {
mPosted = false;
viewCount = mViews.size();
if (viewCount != 0) {
mTempViews = mViews.toArray(mTempViews != null
? mTempViews : new View[viewCount]);
mViews.clear();
}
viewRectCount = mViewRects.size();
if (viewRectCount != 0) {
mTempViewRects = mViewRects.toArray(mTempViewRects != null
? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]);
mViewRects.clear();
}
}
for (int i = 0; i < viewCount; i++) {
mTempViews[i].invalidate();
mTempViews[i] = null;
}
for (int i = 0; i < viewRectCount; i++) {
final View.AttachInfo.InvalidateInfo info = mTempViewRects[i];
info.target.invalidate(info.left, info.top, info.right, info.bottom);
info.release();
}
}
private void postIfNeededLocked() {
if (!mPosted) {
mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null);
mPosted = true;
}
}
}
final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable =
new InvalidateOnAnimationRunnable();
public void dispatchInvalidateDelayed(View view, long delayMilliseconds) {
Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view);
mHandler.sendMessageDelayed(msg, delayMilliseconds);
}
public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info,
long delayMilliseconds) {
final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info);
mHandler.sendMessageDelayed(msg, delayMilliseconds);
}
public void dispatchInvalidateOnAnimation(View view) {
mInvalidateOnAnimationRunnable.addView(view);
}
public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) {
mInvalidateOnAnimationRunnable.addViewRect(info);
}
public void enqueueDisplayList(DisplayList displayList) {
mDisplayLists.add(displayList);
mHandler.removeMessages(MSG_INVALIDATE_DISPLAY_LIST);
Message msg = mHandler.obtainMessage(MSG_INVALIDATE_DISPLAY_LIST);
mHandler.sendMessage(msg);
}
public void dequeueDisplayList(DisplayList displayList) {
if (mDisplayLists.remove(displayList)) {
displayList.invalidate();
if (mDisplayLists.size() == 0) {
mHandler.removeMessages(MSG_INVALIDATE_DISPLAY_LIST);
}
}
}
public void cancelInvalidate(View view) {
mHandler.removeMessages(MSG_INVALIDATE, view);
// fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning
// them to the pool
mHandler.removeMessages(MSG_INVALIDATE_RECT, view);
mInvalidateOnAnimationRunnable.removeView(view);
}
public void dispatchKey(KeyEvent event) {
Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event);
msg.setAsynchronous(true);
mHandler.sendMessage(msg);
}
public void dispatchKeyFromIme(KeyEvent event) {
Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event);
msg.setAsynchronous(true);
mHandler.sendMessage(msg);
}
public void dispatchUnhandledKey(KeyEvent event) {
if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) {
final KeyCharacterMap kcm = event.getKeyCharacterMap();
final int keyCode = event.getKeyCode();
final int metaState = event.getMetaState();
// Check for fallback actions specified by the key character map.
KeyCharacterMap.FallbackAction fallbackAction =
kcm.getFallbackAction(keyCode, metaState);
if (fallbackAction != null) {
final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK;
KeyEvent fallbackEvent = KeyEvent.obtain(
event.getDownTime(), event.getEventTime(),
event.getAction(), fallbackAction.keyCode,
event.getRepeatCount(), fallbackAction.metaState,
event.getDeviceId(), event.getScanCode(),
flags, event.getSource(), null);
fallbackAction.recycle();
dispatchKey(fallbackEvent);
}
}
}
public void dispatchAppVisibility(boolean visible) {
Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY);
msg.arg1 = visible ? 1 : 0;
mHandler.sendMessage(msg);
}
public void dispatchScreenStateChange(boolean on) {
Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE);
msg.arg1 = on ? 1 : 0;
mHandler.sendMessage(msg);
}
public void dispatchGetNewSurface() {
Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE);
mHandler.sendMessage(msg);
}
public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) {
Message msg = Message.obtain();
msg.what = MSG_WINDOW_FOCUS_CHANGED;
msg.arg1 = hasFocus ? 1 : 0;
msg.arg2 = inTouchMode ? 1 : 0;
mHandler.sendMessage(msg);
}
public void dispatchCloseSystemDialogs(String reason) {
Message msg = Message.obtain();
msg.what = MSG_CLOSE_SYSTEM_DIALOGS;
msg.obj = reason;
mHandler.sendMessage(msg);
}
public void dispatchDragEvent(DragEvent event) {
final int what;
if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) {
what = MSG_DISPATCH_DRAG_LOCATION_EVENT;
mHandler.removeMessages(what);
} else {
what = MSG_DISPATCH_DRAG_EVENT;
}
Message msg = mHandler.obtainMessage(what, event);
mHandler.sendMessage(msg);
}
public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility,
int localValue, int localChanges) {
SystemUiVisibilityInfo args = new SystemUiVisibilityInfo();
args.seq = seq;
args.globalVisibility = globalVisibility;
args.localValue = localValue;
args.localChanges = localChanges;
mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args));
}
public void dispatchDoneAnimating() {
mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING);
}
public void dispatchCheckFocus() {
if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) {
// This will result in a call to checkFocus() below.
mHandler.sendEmptyMessage(MSG_CHECK_FOCUS);
}
}
/**
* Post a callback to send a
* {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event.
* This event is send at most once every
* {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}.
*/
private void postSendWindowContentChangedCallback(View source) {
if (mSendWindowContentChangedAccessibilityEvent == null) {
mSendWindowContentChangedAccessibilityEvent =
new SendWindowContentChangedAccessibilityEvent();
}
View oldSource = mSendWindowContentChangedAccessibilityEvent.mSource;
if (oldSource == null) {
mSendWindowContentChangedAccessibilityEvent.mSource = source;
mHandler.postDelayed(mSendWindowContentChangedAccessibilityEvent,
ViewConfiguration.getSendRecurringAccessibilityEventsInterval());
} else {
mSendWindowContentChangedAccessibilityEvent.mSource =
getCommonPredecessor(oldSource, source);
}
}
/**
* Remove a posted callback to send a
* {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event.
*/
private void removeSendWindowContentChangedCallback() {
if (mSendWindowContentChangedAccessibilityEvent != null) {
mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent);
}
}
public boolean showContextMenuForChild(View originalView) {
return false;
}
public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) {
return null;
}
public void createContextMenu(ContextMenu menu) {
}
public void childDrawableStateChanged(View child) {
}
public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) {
if (mView == null) {
return false;
}
// Intercept accessibility focus events fired by virtual nodes to keep
// track of accessibility focus position in such nodes.
final int eventType = event.getEventType();
switch (eventType) {
case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: {
final long sourceNodeId = event.getSourceNodeId();
final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId(
sourceNodeId);
View source = mView.findViewByAccessibilityId(accessibilityViewId);
if (source != null) {
AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider();
if (provider != null) {
AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo(
AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId));
setAccessibilityFocus(source, node);
}
}
} break;
case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: {
final long sourceNodeId = event.getSourceNodeId();
final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId(
sourceNodeId);
View source = mView.findViewByAccessibilityId(accessibilityViewId);
if (source != null) {
AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider();
if (provider != null) {
setAccessibilityFocus(null, null);
}
}
} break;
}
mAccessibilityManager.sendAccessibilityEvent(event);
return true;
}
@Override
public void childAccessibilityStateChanged(View child) {
postSendWindowContentChangedCallback(child);
}
private View getCommonPredecessor(View first, View second) {
if (mAttachInfo != null) {
if (mTempHashSet == null) {
mTempHashSet = new HashSet<View>();
}
HashSet<View> seen = mTempHashSet;
seen.clear();
View firstCurrent = first;
while (firstCurrent != null) {
seen.add(firstCurrent);
ViewParent firstCurrentParent = firstCurrent.mParent;
if (firstCurrentParent instanceof View) {
firstCurrent = (View) firstCurrentParent;
} else {
firstCurrent = null;
}
}
View secondCurrent = second;
while (secondCurrent != null) {
if (seen.contains(secondCurrent)) {
seen.clear();
return secondCurrent;
}
ViewParent secondCurrentParent = secondCurrent.mParent;
if (secondCurrentParent instanceof View) {
secondCurrent = (View) secondCurrentParent;
} else {
secondCurrent = null;
}
}
seen.clear();
}
return null;
}
void checkThread() {
if (mThread != Thread.currentThread()) {
throw new CalledFromWrongThreadException(
"Only the original thread that created a view hierarchy can touch its views.");
}
}
public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) {
// ViewAncestor never intercepts touch event, so this can be a no-op
}
public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) {
final boolean scrolled = scrollToRectOrFocus(rectangle, immediate);
if (rectangle != null) {
mTempRect.set(rectangle);
mTempRect.offset(0, -mCurScrollY);
mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop);
try {
mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate);
} catch (RemoteException re) {
/* ignore */
}
}
return scrolled;
}
public void childHasTransientStateChanged(View child, boolean hasTransientState) {
// Do nothing.
}
class TakenSurfaceHolder extends BaseSurfaceHolder {
@Override
public boolean onAllowLockCanvas() {
return mDrawingAllowed;
}
@Override
public void onRelayoutContainer() {
// Not currently interesting -- from changing between fixed and layout size.
}
public void setFormat(int format) {
((RootViewSurfaceTaker)mView).setSurfaceFormat(format);
}
public void setType(int type) {
((RootViewSurfaceTaker)mView).setSurfaceType(type);
}
@Override
public void onUpdateSurface() {
// We take care of format and type changes on our own.
throw new IllegalStateException("Shouldn't be here");
}
public boolean isCreating() {
return mIsCreating;
}
@Override
public void setFixedSize(int width, int height) {
throw new UnsupportedOperationException(
"Currently only support sizing from layout");
}
public void setKeepScreenOn(boolean screenOn) {
((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn);
}
}
static final class InputMethodCallback implements InputMethodManager.FinishedEventCallback {
private WeakReference<ViewRootImpl> mViewAncestor;
public InputMethodCallback(ViewRootImpl viewAncestor) {
mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor);
}
@Override
public void finishedEvent(int seq, boolean handled) {
final ViewRootImpl viewAncestor = mViewAncestor.get();
if (viewAncestor != null) {
viewAncestor.dispatchImeFinishedEvent(seq, handled);
}
}
}
static class W extends IWindow.Stub {
private final WeakReference<ViewRootImpl> mViewAncestor;
private final IWindowSession mWindowSession;
W(ViewRootImpl viewAncestor) {
mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor);
mWindowSession = viewAncestor.mWindowSession;
}
public void resized(Rect frame, Rect contentInsets,
Rect visibleInsets, boolean reportDraw, Configuration newConfig) {
final ViewRootImpl viewAncestor = mViewAncestor.get();
if (viewAncestor != null) {
viewAncestor.dispatchResized(frame, contentInsets,
visibleInsets, reportDraw, newConfig);
}
}
@Override
public void moved(int newX, int newY) {
final ViewRootImpl viewAncestor = mViewAncestor.get();
if (viewAncestor != null) {
viewAncestor.dispatchMoved(newX, newY);
}
}
public void dispatchAppVisibility(boolean visible) {
final ViewRootImpl viewAncestor = mViewAncestor.get();
if (viewAncestor != null) {
viewAncestor.dispatchAppVisibility(visible);
}
}
public void dispatchScreenState(boolean on) {
final ViewRootImpl viewAncestor = mViewAncestor.get();
if (viewAncestor != null) {
viewAncestor.dispatchScreenStateChange(on);
}
}
public void dispatchGetNewSurface() {
final ViewRootImpl viewAncestor = mViewAncestor.get();
if (viewAncestor != null) {
viewAncestor.dispatchGetNewSurface();
}
}
public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) {
final ViewRootImpl viewAncestor = mViewAncestor.get();
if (viewAncestor != null) {
viewAncestor.windowFocusChanged(hasFocus, inTouchMode);
}
}
private static int checkCallingPermission(String permission) {
try {
return ActivityManagerNative.getDefault().checkPermission(
permission, Binder.getCallingPid(), Binder.getCallingUid());
} catch (RemoteException e) {
return PackageManager.PERMISSION_DENIED;
}
}
public void executeCommand(String command, String parameters, ParcelFileDescriptor out) {
final ViewRootImpl viewAncestor = mViewAncestor.get();
if (viewAncestor != null) {
final View view = viewAncestor.mView;
if (view != null) {
if (checkCallingPermission(Manifest.permission.DUMP) !=
PackageManager.PERMISSION_GRANTED) {
throw new SecurityException("Insufficient permissions to invoke"
+ " executeCommand() from pid=" + Binder.getCallingPid()
+ ", uid=" + Binder.getCallingUid());
}
OutputStream clientStream = null;
try {
clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out);
ViewDebug.dispatchCommand(view, command, parameters, clientStream);
} catch (IOException e) {
e.printStackTrace();
} finally {
if (clientStream != null) {
try {
clientStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
}
public void closeSystemDialogs(String reason) {
final ViewRootImpl viewAncestor = mViewAncestor.get();
if (viewAncestor != null) {
viewAncestor.dispatchCloseSystemDialogs(reason);
}
}
public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep,
boolean sync) {
if (sync) {
try {
mWindowSession.wallpaperOffsetsComplete(asBinder());
} catch (RemoteException e) {
}
}
}
public void dispatchWallpaperCommand(String action, int x, int y,
int z, Bundle extras, boolean sync) {
if (sync) {
try {
mWindowSession.wallpaperCommandComplete(asBinder(), null);
} catch (RemoteException e) {
}
}
}
/* Drag/drop */
public void dispatchDragEvent(DragEvent event) {
final ViewRootImpl viewAncestor = mViewAncestor.get();
if (viewAncestor != null) {
viewAncestor.dispatchDragEvent(event);
}
}
public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility,
int localValue, int localChanges) {
final ViewRootImpl viewAncestor = mViewAncestor.get();
if (viewAncestor != null) {
viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility,
localValue, localChanges);
}
}
public void doneAnimating() {
final ViewRootImpl viewAncestor = mViewAncestor.get();
if (viewAncestor != null) {
viewAncestor.dispatchDoneAnimating();
}
}
}
/**
* Maintains state information for a single trackball axis, generating
* discrete (DPAD) movements based on raw trackball motion.
*/
static final class TrackballAxis {
/**
* The maximum amount of acceleration we will apply.
*/
static final float MAX_ACCELERATION = 20;
/**
* The maximum amount of time (in milliseconds) between events in order
* for us to consider the user to be doing fast trackball movements,
* and thus apply an acceleration.
*/
static final long FAST_MOVE_TIME = 150;
/**
* Scaling factor to the time (in milliseconds) between events to how
* much to multiple/divide the current acceleration. When movement
* is < FAST_MOVE_TIME this multiplies the acceleration; when >
* FAST_MOVE_TIME it divides it.
*/
static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40);
float position;
float absPosition;
float acceleration = 1;
long lastMoveTime = 0;
int step;
int dir;
int nonAccelMovement;
void reset(int _step) {
position = 0;
acceleration = 1;
lastMoveTime = 0;
step = _step;
dir = 0;
}
/**
* Add trackball movement into the state. If the direction of movement
* has been reversed, the state is reset before adding the
* movement (so that you don't have to compensate for any previously
* collected movement before see the result of the movement in the
* new direction).
*
* @return Returns the absolute value of the amount of movement
* collected so far.
*/
float collect(float off, long time, String axis) {
long normTime;
if (off > 0) {
normTime = (long)(off * FAST_MOVE_TIME);
if (dir < 0) {
if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!");
position = 0;
step = 0;
acceleration = 1;
lastMoveTime = 0;
}
dir = 1;
} else if (off < 0) {
normTime = (long)((-off) * FAST_MOVE_TIME);
if (dir > 0) {
if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!");
position = 0;
step = 0;
acceleration = 1;
lastMoveTime = 0;
}
dir = -1;
} else {
normTime = 0;
}
// The number of milliseconds between each movement that is
// considered "normal" and will not result in any acceleration
// or deceleration, scaled by the offset we have here.
if (normTime > 0) {
long delta = time - lastMoveTime;
lastMoveTime = time;
float acc = acceleration;
if (delta < normTime) {
// The user is scrolling rapidly, so increase acceleration.
float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR;
if (scale > 1) acc *= scale;
if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off="
+ off + " normTime=" + normTime + " delta=" + delta
+ " scale=" + scale + " acc=" + acc);
acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION;
} else {
// The user is scrolling slowly, so decrease acceleration.
float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR;
if (scale > 1) acc /= scale;
if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off="
+ off + " normTime=" + normTime + " delta=" + delta
+ " scale=" + scale + " acc=" + acc);
acceleration = acc > 1 ? acc : 1;
}
}
position += off;
return (absPosition = Math.abs(position));
}
/**
* Generate the number of discrete movement events appropriate for
* the currently collected trackball movement.
*
* @param precision The minimum movement required to generate the
* first discrete movement.
*
* @return Returns the number of discrete movements, either positive
* or negative, or 0 if there is not enough trackball movement yet
* for a discrete movement.
*/
int generate(float precision) {
int movement = 0;
nonAccelMovement = 0;
do {
final int dir = position >= 0 ? 1 : -1;
switch (step) {
// If we are going to execute the first step, then we want
// to do this as soon as possible instead of waiting for
// a full movement, in order to make things look responsive.
case 0:
if (absPosition < precision) {
return movement;
}
movement += dir;
nonAccelMovement += dir;
step = 1;
break;
// If we have generated the first movement, then we need
// to wait for the second complete trackball motion before
// generating the second discrete movement.
case 1:
if (absPosition < 2) {
return movement;
}
movement += dir;
nonAccelMovement += dir;
position += dir > 0 ? -2 : 2;
absPosition = Math.abs(position);
step = 2;
break;
// After the first two, we generate discrete movements
// consistently with the trackball, applying an acceleration
// if the trackball is moving quickly. This is a simple
// acceleration on top of what we already compute based
// on how quickly the wheel is being turned, to apply
// a longer increasing acceleration to continuous movement
// in one direction.
default:
if (absPosition < 1) {
return movement;
}
movement += dir;
position += dir >= 0 ? -1 : 1;
absPosition = Math.abs(position);
float acc = acceleration;
acc *= 1.1f;
acceleration = acc < MAX_ACCELERATION ? acc : acceleration;
break;
}
} while (true);
}
}
public static final class CalledFromWrongThreadException extends AndroidRuntimeException {
public CalledFromWrongThreadException(String msg) {
super(msg);
}
}
private SurfaceHolder mHolder = new SurfaceHolder() {
// we only need a SurfaceHolder for opengl. it would be nice
// to implement everything else though, especially the callback
// support (opengl doesn't make use of it right now, but eventually
// will).
public Surface getSurface() {
return mSurface;
}
public boolean isCreating() {
return false;
}
public void addCallback(Callback callback) {
}
public void removeCallback(Callback callback) {
}
public void setFixedSize(int width, int height) {
}
public void setSizeFromLayout() {
}
public void setFormat(int format) {
}
public void setType(int type) {
}
public void setKeepScreenOn(boolean screenOn) {
}
public Canvas lockCanvas() {
return null;
}
public Canvas lockCanvas(Rect dirty) {
return null;
}
public void unlockCanvasAndPost(Canvas canvas) {
}
public Rect getSurfaceFrame() {
return null;
}
};
static RunQueue getRunQueue() {
RunQueue rq = sRunQueues.get();
if (rq != null) {
return rq;
}
rq = new RunQueue();
sRunQueues.set(rq);
return rq;
}
/**
* The run queue is used to enqueue pending work from Views when no Handler is
* attached. The work is executed during the next call to performTraversals on
* the thread.
* @hide
*/
static final class RunQueue {
private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>();
void post(Runnable action) {
postDelayed(action, 0);
}
void postDelayed(Runnable action, long delayMillis) {
HandlerAction handlerAction = new HandlerAction();
handlerAction.action = action;
handlerAction.delay = delayMillis;
synchronized (mActions) {
mActions.add(handlerAction);
}
}
void removeCallbacks(Runnable action) {
final HandlerAction handlerAction = new HandlerAction();
handlerAction.action = action;
synchronized (mActions) {
final ArrayList<HandlerAction> actions = mActions;
while (actions.remove(handlerAction)) {
// Keep going
}
}
}
void executeActions(Handler handler) {
synchronized (mActions) {
final ArrayList<HandlerAction> actions = mActions;
final int count = actions.size();
for (int i = 0; i < count; i++) {
final HandlerAction handlerAction = actions.get(i);
handler.postDelayed(handlerAction.action, handlerAction.delay);
}
actions.clear();
}
}
private static class HandlerAction {
Runnable action;
long delay;
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
HandlerAction that = (HandlerAction) o;
return !(action != null ? !action.equals(that.action) : that.action != null);
}
@Override
public int hashCode() {
int result = action != null ? action.hashCode() : 0;
result = 31 * result + (int) (delay ^ (delay >>> 32));
return result;
}
}
}
/**
* Class for managing the accessibility interaction connection
* based on the global accessibility state.
*/
final class AccessibilityInteractionConnectionManager
implements AccessibilityStateChangeListener {
public void onAccessibilityStateChanged(boolean enabled) {
if (enabled) {
ensureConnection();
if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) {
mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
View focusedView = mView.findFocus();
if (focusedView != null && focusedView != mView) {
focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED);
}
}
} else {
ensureNoConnection();
mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget();
}
}
public void ensureConnection() {
if (mAttachInfo != null) {
final boolean registered =
mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED;
if (!registered) {
mAttachInfo.mAccessibilityWindowId =
mAccessibilityManager.addAccessibilityInteractionConnection(mWindow,
new AccessibilityInteractionConnection(ViewRootImpl.this));
}
}
}
public void ensureNoConnection() {
final boolean registered =
mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED;
if (registered) {
mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED;
mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow);
}
}
}
/**
* This class is an interface this ViewAncestor provides to the
* AccessibilityManagerService to the latter can interact with
* the view hierarchy in this ViewAncestor.
*/
static final class AccessibilityInteractionConnection
extends IAccessibilityInteractionConnection.Stub {
private final WeakReference<ViewRootImpl> mViewRootImpl;
AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) {
mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl);
}
@Override
public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId,
int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags,
int interrogatingPid, long interrogatingTid) {
ViewRootImpl viewRootImpl = mViewRootImpl.get();
if (viewRootImpl != null && viewRootImpl.mView != null) {
viewRootImpl.getAccessibilityInteractionController()
.findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId,
interactionId, callback, flags, interrogatingPid, interrogatingTid);
} else {
// We cannot make the call and notify the caller so it does not wait.
try {
callback.setFindAccessibilityNodeInfosResult(null, interactionId);
} catch (RemoteException re) {
/* best effort - ignore */
}
}
}
@Override
public void performAccessibilityAction(long accessibilityNodeId, int action,
Bundle arguments, int interactionId,
IAccessibilityInteractionConnectionCallback callback, int flags,
int interogatingPid, long interrogatingTid) {
ViewRootImpl viewRootImpl = mViewRootImpl.get();
if (viewRootImpl != null && viewRootImpl.mView != null) {
viewRootImpl.getAccessibilityInteractionController()
.performAccessibilityActionClientThread(accessibilityNodeId, action, arguments,
interactionId, callback, flags, interogatingPid, interrogatingTid);
} else {
// We cannot make the call and notify the caller so it does not wait.
try {
callback.setPerformAccessibilityActionResult(false, interactionId);
} catch (RemoteException re) {
/* best effort - ignore */
}
}
}
@Override
public void findAccessibilityNodeInfoByViewId(long accessibilityNodeId, int viewId,
int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags,
int interrogatingPid, long interrogatingTid) {
ViewRootImpl viewRootImpl = mViewRootImpl.get();
if (viewRootImpl != null && viewRootImpl.mView != null) {
viewRootImpl.getAccessibilityInteractionController()
.findAccessibilityNodeInfoByViewIdClientThread(accessibilityNodeId, viewId,
interactionId, callback, flags, interrogatingPid, interrogatingTid);
} else {
// We cannot make the call and notify the caller so it does not wait.
try {
callback.setFindAccessibilityNodeInfoResult(null, interactionId);
} catch (RemoteException re) {
/* best effort - ignore */
}
}
}
@Override
public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text,
int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags,
int interrogatingPid, long interrogatingTid) {
ViewRootImpl viewRootImpl = mViewRootImpl.get();
if (viewRootImpl != null && viewRootImpl.mView != null) {
viewRootImpl.getAccessibilityInteractionController()
.findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text,
interactionId, callback, flags, interrogatingPid, interrogatingTid);
} else {
// We cannot make the call and notify the caller so it does not wait.
try {
callback.setFindAccessibilityNodeInfosResult(null, interactionId);
} catch (RemoteException re) {
/* best effort - ignore */
}
}
}
@Override
public void findFocus(long accessibilityNodeId, int focusType, int interactionId,
IAccessibilityInteractionConnectionCallback callback, int flags,
int interrogatingPid, long interrogatingTid) {
ViewRootImpl viewRootImpl = mViewRootImpl.get();
if (viewRootImpl != null && viewRootImpl.mView != null) {
viewRootImpl.getAccessibilityInteractionController()
.findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback,
flags, interrogatingPid, interrogatingTid);
} else {
// We cannot make the call and notify the caller so it does not wait.
try {
callback.setFindAccessibilityNodeInfoResult(null, interactionId);
} catch (RemoteException re) {
/* best effort - ignore */
}
}
}
@Override
public void focusSearch(long accessibilityNodeId, int direction, int interactionId,
IAccessibilityInteractionConnectionCallback callback, int flags,
int interrogatingPid, long interrogatingTid) {
ViewRootImpl viewRootImpl = mViewRootImpl.get();
if (viewRootImpl != null && viewRootImpl.mView != null) {
viewRootImpl.getAccessibilityInteractionController()
.focusSearchClientThread(accessibilityNodeId, direction, interactionId,
callback, flags, interrogatingPid, interrogatingTid);
} else {
// We cannot make the call and notify the caller so it does not wait.
try {
callback.setFindAccessibilityNodeInfoResult(null, interactionId);
} catch (RemoteException re) {
/* best effort - ignore */
}
}
}
}
private class SendWindowContentChangedAccessibilityEvent implements Runnable {
public View mSource;
public void run() {
if (mSource != null) {
mSource.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);
mSource.resetAccessibilityStateChanged();
mSource = null;
}
}
}
}