Java程序
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3230行
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124.62 KB
/*
* 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 com.android.internal.view.IInputMethodCallback;
import com.android.internal.view.IInputMethodSession;
import android.graphics.Canvas;
import android.graphics.PixelFormat;
import android.graphics.PorterDuff;
import android.graphics.Rect;
import android.graphics.Region;
import android.os.*;
import android.os.Process;
import android.os.SystemProperties;
import android.util.AndroidRuntimeException;
import android.util.Config;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.EventLog;
import android.util.SparseArray;
import android.view.View.MeasureSpec;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;
import android.view.inputmethod.InputConnection;
import android.view.inputmethod.InputMethodManager;
import android.widget.Scroller;
import android.content.pm.PackageManager;
import android.content.res.CompatibilityInfo;
import android.content.res.Resources;
import android.content.Context;
import android.app.ActivityManagerNative;
import android.Manifest;
import android.media.AudioManager;
import java.lang.ref.WeakReference;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import javax.microedition.khronos.egl.*;
import javax.microedition.khronos.opengles.*;
import static javax.microedition.khronos.opengles.GL10.*;
/**
* 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 WindowManagerImpl}.
*
* {@hide}
*/
@SuppressWarnings({"EmptyCatchBlock"})
public final class ViewRoot extends Handler implements ViewParent,
View.AttachInfo.Callbacks {
private static final String TAG = "ViewRoot";
private static final boolean DBG = false;
@SuppressWarnings({"ConstantConditionalExpression"})
private static final boolean LOCAL_LOGV = false ? Config.LOGD : Config.LOGV;
/** @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_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 WATCH_POINTER = false;
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 long sInstanceCount = 0;
static IWindowSession sWindowSession;
static final Object mStaticInit = new Object();
static boolean mInitialized = false;
static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>();
private static int sDrawTime;
long mLastTrackballTime = 0;
final TrackballAxis mTrackballAxisX = new TrackballAxis();
final TrackballAxis mTrackballAxisY = new TrackballAxis();
final int[] mTmpLocation = new int[2];
final InputMethodCallback mInputMethodCallback;
final SparseArray<Object> mPendingEvents = new SparseArray<Object>();
int mPendingEventSeq = 0;
final Thread mThread;
final WindowLeaked mLocation;
final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams();
final W mWindow;
View mView;
View mFocusedView;
View mRealFocusedView; // this is not set to null in touch mode
int mViewVisibility;
boolean mAppVisible = true;
final Region mTransparentRegion;
final Region mPreviousTransparentRegion;
int mWidth;
int mHeight;
Rect mDirty; // will be a graphics.Region soon
boolean mIsAnimating;
CompatibilityInfo.Translator mTranslator;
final View.AttachInfo mAttachInfo;
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;
boolean mWillDrawSoon;
boolean mLayoutRequested;
boolean mFirst;
boolean mReportNextDraw;
boolean mFullRedrawNeeded;
boolean mNewSurfaceNeeded;
boolean mHasHadWindowFocus;
boolean mLastWasImTarget;
boolean mWindowAttributesChanged = false;
// 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;
/*package*/ int mAddNesting;
// 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();
boolean mScrollMayChange;
int mSoftInputMode;
View mLastScrolledFocus;
int mScrollY;
int mCurScrollY;
Scroller mScroller;
EGL10 mEgl;
EGLDisplay mEglDisplay;
EGLContext mEglContext;
EGLSurface mEglSurface;
GL11 mGL;
Canvas mGlCanvas;
boolean mUseGL;
boolean mGlWanted;
final ViewConfiguration mViewConfiguration;
/**
* see {@link #playSoundEffect(int)}
*/
AudioManager mAudioManager;
private final int mDensity;
public static IWindowSession getWindowSession(Looper mainLooper) {
synchronized (mStaticInit) {
if (!mInitialized) {
try {
InputMethodManager imm = InputMethodManager.getInstance(mainLooper);
sWindowSession = IWindowManager.Stub.asInterface(
ServiceManager.getService("window"))
.openSession(imm.getClient(), imm.getInputContext());
mInitialized = true;
} catch (RemoteException e) {
}
}
return sWindowSession;
}
}
public ViewRoot(Context context) {
super();
if (MEASURE_LATENCY && lt == null) {
lt = new LatencyTimer(100, 1000);
}
++sInstanceCount;
// 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.
getWindowSession(context.getMainLooper());
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, context);
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;
mAttachInfo = new View.AttachInfo(sWindowSession, mWindow, this, this);
mViewConfiguration = ViewConfiguration.get(context);
mDensity = context.getResources().getDisplayMetrics().densityDpi;
}
@Override
protected void finalize() throws Throwable {
super.finalize();
--sInstanceCount;
}
public static long getInstanceCount() {
return sInstanceCount;
}
// 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() {
if (mInitialized) {
try {
return sWindowSession.getInTouchMode();
} catch (RemoteException e) {
}
}
return false;
}
private void initializeGL() {
initializeGLInner();
int err = mEgl.eglGetError();
if (err != EGL10.EGL_SUCCESS) {
// give-up on using GL
destroyGL();
mGlWanted = false;
}
}
private void initializeGLInner() {
final EGL10 egl = (EGL10) EGLContext.getEGL();
mEgl = egl;
/*
* Get to the default display.
*/
final EGLDisplay eglDisplay = egl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
mEglDisplay = eglDisplay;
/*
* We can now initialize EGL for that display
*/
int[] version = new int[2];
egl.eglInitialize(eglDisplay, version);
/*
* Specify a configuration for our opengl session
* and grab the first configuration that matches is
*/
final int[] configSpec = {
EGL10.EGL_RED_SIZE, 5,
EGL10.EGL_GREEN_SIZE, 6,
EGL10.EGL_BLUE_SIZE, 5,
EGL10.EGL_DEPTH_SIZE, 0,
EGL10.EGL_NONE
};
final EGLConfig[] configs = new EGLConfig[1];
final int[] num_config = new int[1];
egl.eglChooseConfig(eglDisplay, configSpec, configs, 1, num_config);
final EGLConfig config = configs[0];
/*
* Create an OpenGL ES context. This must be done only once, an
* OpenGL context is a somewhat heavy object.
*/
final EGLContext context = egl.eglCreateContext(eglDisplay, config,
EGL10.EGL_NO_CONTEXT, null);
mEglContext = context;
/*
* Create an EGL surface we can render into.
*/
final EGLSurface surface = egl.eglCreateWindowSurface(eglDisplay, config, mHolder, null);
mEglSurface = surface;
/*
* Before we can issue GL commands, we need to make sure
* the context is current and bound to a surface.
*/
egl.eglMakeCurrent(eglDisplay, surface, surface, context);
/*
* Get to the appropriate GL interface.
* This is simply done by casting the GL context to either
* GL10 or GL11.
*/
final GL11 gl = (GL11) context.getGL();
mGL = gl;
mGlCanvas = new Canvas(gl);
mUseGL = true;
}
private void destroyGL() {
// inform skia that the context is gone
nativeAbandonGlCaches();
mEgl.eglMakeCurrent(mEglDisplay, EGL10.EGL_NO_SURFACE,
EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_CONTEXT);
mEgl.eglDestroyContext(mEglDisplay, mEglContext);
mEgl.eglDestroySurface(mEglDisplay, mEglSurface);
mEgl.eglTerminate(mEglDisplay);
mEglContext = null;
mEglSurface = null;
mEglDisplay = null;
mEgl = null;
mGlCanvas = null;
mGL = null;
mUseGL = false;
}
private void checkEglErrors() {
if (mUseGL) {
int err = mEgl.eglGetError();
if (err != EGL10.EGL_SUCCESS) {
// something bad has happened revert to
// normal rendering.
destroyGL();
if (err != EGL11.EGL_CONTEXT_LOST) {
// we'll try again if it was context lost
mGlWanted = false;
}
}
}
}
/**
* We have one child
*/
public void setView(View view, WindowManager.LayoutParams attrs,
View panelParentView) {
synchronized (this) {
if (mView == null) {
mView = view;
mWindowAttributes.copyFrom(attrs);
attrs = mWindowAttributes;
Resources resources = mView.getContext().getResources();
CompatibilityInfo compatibilityInfo = resources.getCompatibilityInfo();
mTranslator = compatibilityInfo.getTranslator();
if (mTranslator != null || !compatibilityInfo.supportsScreen()) {
mSurface.setCompatibleDisplayMetrics(resources.getDisplayMetrics(),
mTranslator);
}
boolean restore = false;
if (mTranslator != null) {
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;
}
mSoftInputMode = attrs.softInputMode;
mWindowAttributesChanged = true;
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();
try {
res = sWindowSession.add(mWindow, mWindowAttributes,
getHostVisibility(), mAttachInfo.mContentInsets);
} catch (RemoteException e) {
mAdded = false;
mView = null;
mAttachInfo.mRootView = null;
unscheduleTraversals();
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 (Config.LOGV) Log.v("ViewRoot", "Added window " + mWindow);
if (res < WindowManagerImpl.ADD_OKAY) {
mView = null;
mAttachInfo.mRootView = null;
mAdded = false;
unscheduleTraversals();
switch (res) {
case WindowManagerImpl.ADD_BAD_APP_TOKEN:
case WindowManagerImpl.ADD_BAD_SUBWINDOW_TOKEN:
throw new WindowManagerImpl.BadTokenException(
"Unable to add window -- token " + attrs.token
+ " is not valid; is your activity running?");
case WindowManagerImpl.ADD_NOT_APP_TOKEN:
throw new WindowManagerImpl.BadTokenException(
"Unable to add window -- token " + attrs.token
+ " is not for an application");
case WindowManagerImpl.ADD_APP_EXITING:
throw new WindowManagerImpl.BadTokenException(
"Unable to add window -- app for token " + attrs.token
+ " is exiting");
case WindowManagerImpl.ADD_DUPLICATE_ADD:
throw new WindowManagerImpl.BadTokenException(
"Unable to add window -- window " + mWindow
+ " has already been added");
case WindowManagerImpl.ADD_STARTING_NOT_NEEDED:
// Silently ignore -- we would have just removed it
// right away, anyway.
return;
case WindowManagerImpl.ADD_MULTIPLE_SINGLETON:
throw new WindowManagerImpl.BadTokenException(
"Unable to add window " + mWindow +
" -- another window of this type already exists");
case WindowManagerImpl.ADD_PERMISSION_DENIED:
throw new WindowManagerImpl.BadTokenException(
"Unable to add window " + mWindow +
" -- permission denied for this window type");
}
throw new RuntimeException(
"Unable to add window -- unknown error code " + res);
}
view.assignParent(this);
mAddedTouchMode = (res&WindowManagerImpl.ADD_FLAG_IN_TOUCH_MODE) != 0;
mAppVisible = (res&WindowManagerImpl.ADD_FLAG_APP_VISIBLE) != 0;
}
}
}
public View getView() {
return mView;
}
final WindowLeaked getLocation() {
return mLocation;
}
void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) {
synchronized (this) {
int oldSoftInputMode = mWindowAttributes.softInputMode;
// preserve compatible window flag if exists.
int compatibleWindowFlag =
mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW;
mWindowAttributes.copyFrom(attrs);
mWindowAttributes.flags |= compatibleWindowFlag;
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();
}
/**
* {@inheritDoc}
*/
public void requestLayout() {
checkThread();
mLayoutRequested = true;
scheduleTraversals();
}
/**
* {@inheritDoc}
*/
public boolean isLayoutRequested() {
return mLayoutRequested;
}
public void invalidateChild(View child, Rect dirty) {
checkThread();
if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty);
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);
}
}
mDirty.union(dirty);
if (!mWillDrawSoon) {
scheduleTraversals();
}
}
public ViewParent getParent() {
return null;
}
public ViewParent invalidateChildInParent(final int[] location, final Rect dirty) {
invalidateChild(null, dirty);
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) {
}
public void scheduleTraversals() {
if (!mTraversalScheduled) {
mTraversalScheduled = true;
sendEmptyMessage(DO_TRAVERSAL);
}
}
public void unscheduleTraversals() {
if (mTraversalScheduled) {
mTraversalScheduled = false;
removeMessages(DO_TRAVERSAL);
}
}
int getHostVisibility() {
return mAppVisible ? mView.getVisibility() : View.GONE;
}
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;
mTraversalScheduled = false;
mWillDrawSoon = true;
boolean windowResizesToFitContent = false;
boolean fullRedrawNeeded = mFullRedrawNeeded;
boolean newSurface = false;
WindowManager.LayoutParams lp = mWindowAttributes;
int desiredWindowWidth;
int desiredWindowHeight;
int childWidthMeasureSpec;
int childHeightMeasureSpec;
final View.AttachInfo attachInfo = mAttachInfo;
final int viewVisibility = getHostVisibility();
boolean viewVisibilityChanged = mViewVisibility != viewVisibility
|| mNewSurfaceNeeded;
float appScale = mAttachInfo.mApplicationScale;
WindowManager.LayoutParams params = null;
if (mWindowAttributesChanged) {
mWindowAttributesChanged = false;
params = lp;
}
Rect frame = mWinFrame;
if (mFirst) {
fullRedrawNeeded = true;
mLayoutRequested = true;
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;
attachInfo.mTranslucentWindow = lp.format != PixelFormat.OPAQUE;
attachInfo.mHasWindowFocus = false;
attachInfo.mWindowVisibility = viewVisibility;
attachInfo.mRecomputeGlobalAttributes = false;
attachInfo.mKeepScreenOn = false;
viewVisibilityChanged = false;
host.dispatchAttachedToWindow(attachInfo, 0);
//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("ViewRoot",
"View " + host + " resized to: " + frame);
fullRedrawNeeded = true;
mLayoutRequested = true;
windowResizesToFitContent = true;
}
}
if (viewVisibilityChanged) {
attachInfo.mWindowVisibility = viewVisibility;
host.dispatchWindowVisibilityChanged(viewVisibility);
if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) {
if (mUseGL) {
destroyGL();
}
}
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;
}
}
boolean insetsChanged = false;
if (mLayoutRequested) {
// Execute enqueued actions on every layout in case a view that was detached
// enqueued an action after being detached
getRunQueue().executeActions(attachInfo.mHandler);
if (mFirst) {
host.fitSystemWindows(mAttachInfo.mContentInsets);
// make sure touch mode code executes by setting cached value
// to opposite of the added touch mode.
mAttachInfo.mInTouchMode = !mAddedTouchMode;
ensureTouchModeLocally(mAddedTouchMode);
} else {
if (!mAttachInfo.mContentInsets.equals(mPendingContentInsets)) {
mAttachInfo.mContentInsets.set(mPendingContentInsets);
host.fitSystemWindows(mAttachInfo.mContentInsets);
insetsChanged = true;
if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: "
+ mAttachInfo.mContentInsets);
}
if (!mAttachInfo.mVisibleInsets.equals(mPendingVisibleInsets)) {
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) {
windowResizesToFitContent = true;
DisplayMetrics packageMetrics =
mView.getContext().getResources().getDisplayMetrics();
desiredWindowWidth = packageMetrics.widthPixels;
desiredWindowHeight = packageMetrics.heightPixels;
}
}
childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width);
childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height);
// Ask host how big it wants to be
if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v("ViewRoot",
"Measuring " + host + " in display " + desiredWindowWidth
+ "x" + desiredWindowHeight + "...");
host.measure(childWidthMeasureSpec, childHeightMeasureSpec);
if (DBG) {
System.out.println("======================================");
System.out.println("performTraversals -- after measure");
host.debug();
}
}
if (attachInfo.mRecomputeGlobalAttributes) {
//Log.i(TAG, "Computing screen on!");
attachInfo.mRecomputeGlobalAttributes = false;
boolean oldVal = attachInfo.mKeepScreenOn;
attachInfo.mKeepScreenOn = false;
host.dispatchCollectViewAttributes(0);
if (attachInfo.mKeepScreenOn != oldVal) {
params = lp;
//Log.i(TAG, "Keep screen on changed: " + attachInfo.mKeepScreenOn);
}
}
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.REQUEST_TRANSPARENT_REGIONS) != 0) {
if (!PixelFormat.formatHasAlpha(params.format)) {
params.format = PixelFormat.TRANSLUCENT;
}
}
boolean windowShouldResize = mLayoutRequested && windowResizesToFitContent
&& (mWidth != host.mMeasuredWidth || mHeight != host.mMeasuredHeight);
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 (mWindowAttributes.memoryType == WindowManager.LayoutParams.MEMORY_TYPE_GPU) {
if (params == null) {
params = mWindowAttributes;
}
mGlWanted = true;
}
}
boolean initialized = false;
boolean contentInsetsChanged = false;
boolean visibleInsetsChanged;
try {
boolean hadSurface = mSurface.isValid();
int fl = 0;
if (params != null) {
fl = params.flags;
if (attachInfo.mKeepScreenOn) {
params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
}
}
if (DEBUG_LAYOUT) {
Log.i(TAG, "host=w:" + host.mMeasuredWidth + ", h:" +
host.mMeasuredHeight + ", params=" + params);
}
relayoutResult = relayoutWindow(params, viewVisibility, insetsPending);
if (params != null) {
params.flags = fl;
}
if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString()
+ " content=" + mPendingContentInsets.toShortString()
+ " visible=" + mPendingVisibleInsets.toShortString()
+ " surface=" + mSurface);
contentInsetsChanged = !mPendingContentInsets.equals(
mAttachInfo.mContentInsets);
visibleInsetsChanged = !mPendingVisibleInsets.equals(
mAttachInfo.mVisibleInsets);
if (contentInsetsChanged) {
mAttachInfo.mContentInsets.set(mPendingContentInsets);
host.fitSystemWindows(mAttachInfo.mContentInsets);
if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: "
+ mAttachInfo.mContentInsets);
}
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;
fullRedrawNeeded = true;
mPreviousTransparentRegion.setEmpty();
if (mGlWanted && !mUseGL) {
initializeGL();
initialized = mGlCanvas != null;
}
}
} 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();
}
}
} catch (RemoteException e) {
}
if (DEBUG_ORIENTATION) Log.v(
"ViewRoot", "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.
mWidth = frame.width();
mHeight = frame.height();
if (initialized) {
mGlCanvas.setViewport((int) (mWidth * appScale + 0.5f),
(int) (mHeight * appScale + 0.5f));
}
boolean focusChangedDueToTouchMode = ensureTouchModeLocally(
(relayoutResult&WindowManagerImpl.RELAYOUT_IN_TOUCH_MODE) != 0);
if (focusChangedDueToTouchMode || mWidth != host.mMeasuredWidth
|| mHeight != host.mMeasuredHeight || contentInsetsChanged) {
childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width);
childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height);
if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth="
+ mWidth + " measuredWidth=" + host.mMeasuredWidth
+ " mHeight=" + mHeight
+ " measuredHeight" + host.mMeasuredHeight
+ " coveredInsetsChanged=" + contentInsetsChanged);
// Ask host how big it wants to be
host.measure(childWidthMeasureSpec, childHeightMeasureSpec);
// Implementation of weights from WindowManager.LayoutParams
// We just grow the dimensions as needed and re-measure if
// needs be
int width = host.mMeasuredWidth;
int height = host.mMeasuredHeight;
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);
host.measure(childWidthMeasureSpec, childHeightMeasureSpec);
}
mLayoutRequested = true;
}
}
final boolean didLayout = mLayoutRequested;
boolean triggerGlobalLayoutListener = didLayout
|| attachInfo.mRecomputeGlobalAttributes;
if (didLayout) {
mLayoutRequested = false;
mScrollMayChange = true;
if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(
"ViewRoot", "Laying out " + host + " to (" +
host.mMeasuredWidth + ", " + host.mMeasuredHeight + ")");
long startTime = 0L;
if (Config.DEBUG && ViewDebug.profileLayout) {
startTime = SystemClock.elapsedRealtime();
}
host.layout(0, 0, host.mMeasuredWidth, host.mMeasuredHeight);
if (Config.DEBUG && ViewDebug.consistencyCheckEnabled) {
if (!host.dispatchConsistencyCheck(ViewDebug.CONSISTENCY_LAYOUT)) {
throw new IllegalStateException("The view hierarchy is an inconsistent state,"
+ "please refer to the logs with the tag "
+ ViewDebug.CONSISTENCY_LOG_TAG + " for more infomation.");
}
}
if (Config.DEBUG && ViewDebug.profileLayout) {
EventLog.writeEvent(60001, SystemClock.elapsedRealtime() - startTime);
}
// By this point all views have been sized and positionned
// We can compute the transparent area
if ((host.mPrivateFlags & View.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 {
sWindowSession.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 (computesInternalInsets) {
ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets;
final Rect givenContent = attachInfo.mGivenInternalInsets.contentInsets;
final Rect givenVisible = attachInfo.mGivenInternalInsets.visibleInsets;
givenContent.left = givenContent.top = givenContent.right
= givenContent.bottom = givenVisible.left = givenVisible.top
= givenVisible.right = givenVisible.bottom = 0;
attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets);
Rect contentInsets = insets.contentInsets;
Rect visibleInsets = insets.visibleInsets;
if (mTranslator != null) {
contentInsets = mTranslator.getTranslatedContentInsets(contentInsets);
visibleInsets = mTranslator.getTranslatedVisbileInsets(visibleInsets);
}
if (insetsPending || !mLastGivenInsets.equals(insets)) {
mLastGivenInsets.set(insets);
try {
sWindowSession.setInsets(mWindow, insets.mTouchableInsets,
contentInsets, visibleInsets);
} catch (RemoteException e) {
}
}
}
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);
}
}
}
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);
}
}
}
boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw();
if (!cancelDraw && !newSurface) {
mFullRedrawNeeded = false;
draw(fullRedrawNeeded);
if ((relayoutResult&WindowManagerImpl.RELAYOUT_FIRST_TIME) != 0
|| mReportNextDraw) {
if (LOCAL_LOGV) {
Log.v("ViewRoot", "FINISHED DRAWING: " + mWindowAttributes.getTitle());
}
mReportNextDraw = false;
try {
sWindowSession.finishDrawing(mWindow);
} catch (RemoteException e) {
}
}
} else {
// We were supposed to report when we are done drawing. Since we canceled the
// draw, remember it here.
if ((relayoutResult&WindowManagerImpl.RELAYOUT_FIRST_TIME) != 0) {
mReportNextDraw = true;
}
if (fullRedrawNeeded) {
mFullRedrawNeeded = true;
}
// Try again
scheduleTraversals();
}
}
public void requestTransparentRegion(View child) {
// the test below should not fail unless someone is messing with us
checkThread();
if (mView == child) {
mView.mPrivateFlags |= View.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;
}
}
/**
* 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 int getRootMeasureSpec(int windowSize, int rootDimension) {
int measureSpec;
switch (rootDimension) {
case ViewGroup.LayoutParams.FILL_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;
}
private void draw(boolean fullRedrawNeeded) {
Surface surface = mSurface;
if (surface == null || !surface.isValid()) {
return;
}
scrollToRectOrFocus(null, false);
if (mAttachInfo.mViewScrollChanged) {
mAttachInfo.mViewScrollChanged = false;
mAttachInfo.mTreeObserver.dispatchOnScrollChanged();
}
int yoff;
final boolean scrolling = mScroller != null && mScroller.computeScrollOffset();
if (scrolling) {
yoff = mScroller.getCurrY();
} else {
yoff = mScrollY;
}
if (mCurScrollY != yoff) {
mCurScrollY = yoff;
fullRedrawNeeded = true;
}
float appScale = mAttachInfo.mApplicationScale;
boolean scalingRequired = mAttachInfo.mScalingRequired;
Rect dirty = mDirty;
if (mUseGL) {
if (!dirty.isEmpty()) {
Canvas canvas = mGlCanvas;
if (mGL != null && canvas != null) {
mGL.glDisable(GL_SCISSOR_TEST);
mGL.glClearColor(0, 0, 0, 0);
mGL.glClear(GL_COLOR_BUFFER_BIT);
mGL.glEnable(GL_SCISSOR_TEST);
mAttachInfo.mDrawingTime = SystemClock.uptimeMillis();
mAttachInfo.mIgnoreDirtyState = true;
mView.mPrivateFlags |= View.DRAWN;
int saveCount = canvas.save(Canvas.MATRIX_SAVE_FLAG);
try {
canvas.translate(0, -yoff);
if (mTranslator != null) {
mTranslator.translateCanvas(canvas);
}
canvas.setScreenDensity(scalingRequired
? DisplayMetrics.DENSITY_DEVICE : 0);
mView.draw(canvas);
if (Config.DEBUG && ViewDebug.consistencyCheckEnabled) {
mView.dispatchConsistencyCheck(ViewDebug.CONSISTENCY_DRAWING);
}
} finally {
canvas.restoreToCount(saveCount);
}
mAttachInfo.mIgnoreDirtyState = false;
mEgl.eglSwapBuffers(mEglDisplay, mEglSurface);
checkEglErrors();
if (Config.DEBUG && ViewDebug.showFps) {
int now = (int)SystemClock.elapsedRealtime();
if (sDrawTime != 0) {
nativeShowFPS(canvas, now - sDrawTime);
}
sDrawTime = now;
}
}
}
if (scrolling) {
mFullRedrawNeeded = true;
scheduleTraversals();
}
return;
}
if (fullRedrawNeeded) {
mAttachInfo.mIgnoreDirtyState = true;
dirty.union(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f));
}
if (DEBUG_ORIENTATION || DEBUG_DRAW) {
Log.v("ViewRoot", "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);
}
Canvas canvas;
try {
int left = dirty.left;
int top = dirty.top;
int right = dirty.right;
int bottom = dirty.bottom;
canvas = surface.lockCanvas(dirty);
if (left != dirty.left || top != dirty.top || right != dirty.right ||
bottom != dirty.bottom) {
mAttachInfo.mIgnoreDirtyState = true;
}
// TODO: Do this in native
canvas.setDensity(mDensity);
} catch (Surface.OutOfResourcesException e) {
Log.e("ViewRoot", "OutOfResourcesException locking surface", e);
// TODO: we should ask the window manager to do something!
// for now we just do nothing
return;
} catch (IllegalArgumentException e) {
Log.e("ViewRoot", "IllegalArgumentException locking surface", e);
// TODO: we should ask the window manager to do something!
// for now we just do nothing
return;
}
try {
if (!dirty.isEmpty() || mIsAnimating) {
long startTime = 0L;
if (DEBUG_ORIENTATION || DEBUG_DRAW) {
Log.v("ViewRoot", "Surface " + surface + " drawing to bitmap w="
+ canvas.getWidth() + ", h=" + canvas.getHeight());
//canvas.drawARGB(255, 255, 0, 0);
}
if (Config.DEBUG && ViewDebug.profileDrawing) {
startTime = SystemClock.elapsedRealtime();
}
// 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;
mAttachInfo.mDrawingTime = SystemClock.uptimeMillis();
mView.mPrivateFlags |= View.DRAWN;
if (DEBUG_DRAW) {
Context cxt = mView.getContext();
Log.i(TAG, "Drawing: package:" + cxt.getPackageName() +
", metrics=" + cxt.getResources().getDisplayMetrics() +
", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo());
}
int saveCount = canvas.save(Canvas.MATRIX_SAVE_FLAG);
try {
canvas.translate(0, -yoff);
if (mTranslator != null) {
mTranslator.translateCanvas(canvas);
}
canvas.setScreenDensity(scalingRequired
? DisplayMetrics.DENSITY_DEVICE : 0);
mView.draw(canvas);
} finally {
mAttachInfo.mIgnoreDirtyState = false;
canvas.restoreToCount(saveCount);
}
if (Config.DEBUG && ViewDebug.consistencyCheckEnabled) {
mView.dispatchConsistencyCheck(ViewDebug.CONSISTENCY_DRAWING);
}
if (Config.DEBUG && ViewDebug.showFps) {
int now = (int)SystemClock.elapsedRealtime();
if (sDrawTime != 0) {
nativeShowFPS(canvas, now - sDrawTime);
}
sDrawTime = now;
}
if (Config.DEBUG && ViewDebug.profileDrawing) {
EventLog.writeEvent(60000, SystemClock.elapsedRealtime() - startTime);
}
}
} finally {
surface.unlockCanvasAndPost(canvas);
}
if (LOCAL_LOGV) {
Log.v("ViewRoot", "Surface " + surface + " unlockCanvasAndPost");
}
if (scrolling) {
mFullRedrawNeeded = true;
scheduleTraversals();
}
}
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());
((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) {
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;
}
public void requestChildFocus(View child, View focused) {
checkThread();
if (mFocusedView != focused) {
mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mFocusedView, focused);
scheduleTraversals();
}
mFocusedView = mRealFocusedView = focused;
if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Request child focus: focus now "
+ mFocusedView);
}
public void clearChildFocus(View child) {
checkThread();
View oldFocus = mFocusedView;
if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Clearing child focus");
mFocusedView = mRealFocusedView = null;
if (mView != null && !mView.hasFocus()) {
// If a view gets the focus, the listener will be invoked from requestChildFocus()
if (!mView.requestFocus(View.FOCUS_FORWARD)) {
mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(oldFocus, null);
}
} else if (oldFocus != null) {
mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(oldFocus, null);
}
}
public void focusableViewAvailable(View v) {
checkThread();
if (mView != null && !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 (Config.LOGV) Log.v("ViewRoot", "Detaching in " + this + " of " + mSurface);
if (mView != null) {
mView.dispatchDetachedFromWindow();
}
mView = null;
mAttachInfo.mRootView = null;
mAttachInfo.mSurface = null;
if (mUseGL) {
destroyGL();
}
mSurface.release();
try {
sWindowSession.remove(mWindow);
} catch (RemoteException e) {
}
}
/**
* Return true if child is an ancestor of parent, (or equal to the parent).
*/
private 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);
}
public final static int DO_TRAVERSAL = 1000;
public final static int DIE = 1001;
public final static int RESIZED = 1002;
public final static int RESIZED_REPORT = 1003;
public final static int WINDOW_FOCUS_CHANGED = 1004;
public final static int DISPATCH_KEY = 1005;
public final static int DISPATCH_POINTER = 1006;
public final static int DISPATCH_TRACKBALL = 1007;
public final static int DISPATCH_APP_VISIBILITY = 1008;
public final static int DISPATCH_GET_NEW_SURFACE = 1009;
public final static int FINISHED_EVENT = 1010;
public final static int DISPATCH_KEY_FROM_IME = 1011;
public final static int FINISH_INPUT_CONNECTION = 1012;
public final static int CHECK_FOCUS = 1013;
public final static int CLOSE_SYSTEM_DIALOGS = 1014;
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case View.AttachInfo.INVALIDATE_MSG:
((View) msg.obj).invalidate();
break;
case View.AttachInfo.INVALIDATE_RECT_MSG:
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 DO_TRAVERSAL:
if (mProfile) {
Debug.startMethodTracing("ViewRoot");
}
performTraversals();
if (mProfile) {
Debug.stopMethodTracing();
mProfile = false;
}
break;
case FINISHED_EVENT:
handleFinishedEvent(msg.arg1, msg.arg2 != 0);
break;
case DISPATCH_KEY:
if (LOCAL_LOGV) Log.v(
"ViewRoot", "Dispatching key "
+ msg.obj + " to " + mView);
deliverKeyEvent((KeyEvent)msg.obj, true);
break;
case DISPATCH_POINTER: {
MotionEvent event = (MotionEvent)msg.obj;
boolean callWhenDone = msg.arg1 != 0;
if (event == null) {
try {
long timeBeforeGettingEvents;
if (MEASURE_LATENCY) {
timeBeforeGettingEvents = System.nanoTime();
}
event = sWindowSession.getPendingPointerMove(mWindow);
if (MEASURE_LATENCY && event != null) {
lt.sample("9 Client got events ", System.nanoTime() - event.getEventTimeNano());
lt.sample("8 Client getting events ", timeBeforeGettingEvents - event.getEventTimeNano());
}
} catch (RemoteException e) {
}
callWhenDone = false;
}
if (event != null && mTranslator != null) {
mTranslator.translateEventInScreenToAppWindow(event);
}
try {
boolean handled;
if (mView != null && mAdded && event != null) {
// enter touch mode on the down
boolean isDown = event.getAction() == MotionEvent.ACTION_DOWN;
if (isDown) {
ensureTouchMode(true);
}
if(Config.LOGV) {
captureMotionLog("captureDispatchPointer", event);
}
if (mCurScrollY != 0) {
event.offsetLocation(0, mCurScrollY);
}
if (MEASURE_LATENCY) {
lt.sample("A Dispatching TouchEvents", System.nanoTime() - event.getEventTimeNano());
}
handled = mView.dispatchTouchEvent(event);
if (MEASURE_LATENCY) {
lt.sample("B Dispatched TouchEvents ", System.nanoTime() - event.getEventTimeNano());
}
if (!handled && isDown) {
int edgeSlop = mViewConfiguration.getScaledEdgeSlop();
final int edgeFlags = event.getEdgeFlags();
int direction = View.FOCUS_UP;
int x = (int)event.getX();
int y = (int)event.getY();
final int[] deltas = new int[2];
if ((edgeFlags & MotionEvent.EDGE_TOP) != 0) {
direction = View.FOCUS_DOWN;
if ((edgeFlags & MotionEvent.EDGE_LEFT) != 0) {
deltas[0] = edgeSlop;
x += edgeSlop;
} else if ((edgeFlags & MotionEvent.EDGE_RIGHT) != 0) {
deltas[0] = -edgeSlop;
x -= edgeSlop;
}
} else if ((edgeFlags & MotionEvent.EDGE_BOTTOM) != 0) {
direction = View.FOCUS_UP;
if ((edgeFlags & MotionEvent.EDGE_LEFT) != 0) {
deltas[0] = edgeSlop;
x += edgeSlop;
} else if ((edgeFlags & MotionEvent.EDGE_RIGHT) != 0) {
deltas[0] = -edgeSlop;
x -= edgeSlop;
}
} else if ((edgeFlags & MotionEvent.EDGE_LEFT) != 0) {
direction = View.FOCUS_RIGHT;
} else if ((edgeFlags & MotionEvent.EDGE_RIGHT) != 0) {
direction = View.FOCUS_LEFT;
}
if (edgeFlags != 0 && mView instanceof ViewGroup) {
View nearest = FocusFinder.getInstance().findNearestTouchable(
((ViewGroup) mView), x, y, direction, deltas);
if (nearest != null) {
event.offsetLocation(deltas[0], deltas[1]);
event.setEdgeFlags(0);
mView.dispatchTouchEvent(event);
}
}
}
}
} finally {
if (callWhenDone) {
try {
sWindowSession.finishKey(mWindow);
} catch (RemoteException e) {
}
}
if (event != null) {
event.recycle();
}
if (LOCAL_LOGV || WATCH_POINTER) Log.i(TAG, "Done dispatching!");
// Let the exception fall through -- the looper will catch
// it and take care of the bad app for us.
}
} break;
case DISPATCH_TRACKBALL:
deliverTrackballEvent((MotionEvent)msg.obj, msg.arg1 != 0);
break;
case DISPATCH_APP_VISIBILITY:
handleAppVisibility(msg.arg1 != 0);
break;
case DISPATCH_GET_NEW_SURFACE:
handleGetNewSurface();
break;
case RESIZED:
Rect coveredInsets = ((Rect[])msg.obj)[0];
Rect visibleInsets = ((Rect[])msg.obj)[1];
if (mWinFrame.width() == msg.arg1 && mWinFrame.height() == msg.arg2
&& mPendingContentInsets.equals(coveredInsets)
&& mPendingVisibleInsets.equals(visibleInsets)) {
break;
}
// fall through...
case RESIZED_REPORT:
if (mAdded) {
mWinFrame.left = 0;
mWinFrame.right = msg.arg1;
mWinFrame.top = 0;
mWinFrame.bottom = msg.arg2;
mPendingContentInsets.set(((Rect[])msg.obj)[0]);
mPendingVisibleInsets.set(((Rect[])msg.obj)[1]);
if (msg.what == RESIZED_REPORT) {
mReportNextDraw = true;
}
requestLayout();
}
break;
case WINDOW_FOCUS_CHANGED: {
if (mAdded) {
boolean hasWindowFocus = msg.arg1 != 0;
mAttachInfo.mHasWindowFocus = hasWindowFocus;
if (hasWindowFocus) {
boolean inTouchMode = msg.arg2 != 0;
ensureTouchModeLocally(inTouchMode);
if (mGlWanted) {
checkEglErrors();
// we lost the gl context, so recreate it.
if (mGlWanted && !mUseGL) {
initializeGL();
if (mGlCanvas != null) {
float appScale = mAttachInfo.mApplicationScale;
mGlCanvas.setViewport(
(int) (mWidth * appScale + 0.5f),
(int) (mHeight * appScale + 0.5f));
}
}
}
}
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;
}
if (hasWindowFocus && mView != null) {
sendAccessibilityEvents();
}
}
} break;
case DIE:
doDie();
break;
case DISPATCH_KEY_FROM_IME: {
if (LOCAL_LOGV) Log.v(
"ViewRoot", "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!
event = KeyEvent.changeFlags(event,
event.getFlags()&~KeyEvent.FLAG_FROM_SYSTEM);
}
deliverKeyEventToViewHierarchy((KeyEvent)msg.obj, false);
} break;
case FINISH_INPUT_CONNECTION: {
InputMethodManager imm = InputMethodManager.peekInstance();
if (imm != null) {
imm.reportFinishInputConnection((InputConnection)msg.obj);
}
} break;
case CHECK_FOCUS: {
InputMethodManager imm = InputMethodManager.peekInstance();
if (imm != null) {
imm.checkFocus();
}
} break;
case CLOSE_SYSTEM_DIALOGS: {
if (mView != null) {
mView.onCloseSystemDialogs((String)msg.obj);
}
} break;
}
}
/**
* 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 {
sWindowSession.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;
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 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 deliverTrackballEvent(MotionEvent event, boolean callWhenDone) {
if (event == null) {
try {
event = sWindowSession.getPendingTrackballMove(mWindow);
} catch (RemoteException e) {
}
callWhenDone = false;
}
if (DEBUG_TRACKBALL) Log.v(TAG, "Motion event:" + event);
boolean handled = false;
try {
if (event == null) {
handled = true;
} else if (mView != null && mAdded) {
handled = mView.dispatchTrackballEvent(event);
if (!handled) {
// we could do something here, like changing the focus
// or something?
}
}
} finally {
if (handled) {
if (callWhenDone) {
try {
sWindowSession.finishKey(mWindow);
} catch (RemoteException e) {
}
}
if (event != null) {
event.recycle();
}
// 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);
//noinspection ReturnInsideFinallyBlock
return;
}
// Let the exception fall through -- the looper will catch
// it and take care of the bad app for us.
}
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;
}
try {
final int action = event.getAction();
final int metastate = event.getMetaState();
switch (action) {
case MotionEvent.ACTION_DOWN:
x.reset(2);
y.reset(2);
deliverKeyEvent(new KeyEvent(curTime, curTime,
KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER,
0, metastate), false);
break;
case MotionEvent.ACTION_UP:
x.reset(2);
y.reset(2);
deliverKeyEvent(new KeyEvent(curTime, curTime,
KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER,
0, metastate), false);
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--;
deliverKeyEvent(new KeyEvent(curTime, curTime,
KeyEvent.ACTION_MULTIPLE, keycode,
accelMovement-movement, metastate), false);
}
while (movement > 0) {
if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: "
+ keycode);
movement--;
curTime = SystemClock.uptimeMillis();
deliverKeyEvent(new KeyEvent(curTime, curTime,
KeyEvent.ACTION_DOWN, keycode, 0, event.getMetaState()), false);
deliverKeyEvent(new KeyEvent(curTime, curTime,
KeyEvent.ACTION_UP, keycode, 0, metastate), false);
}
mLastTrackballTime = curTime;
}
} finally {
if (callWhenDone) {
try {
sWindowSession.finishKey(mWindow);
} catch (RemoteException e) {
}
if (event != null) {
event.recycle();
}
}
// Let the exception fall through -- the looper will catch
// it and take care of the bad app for us.
}
}
/**
* @param keyCode The key code
* @return True if the key is directional.
*/
static boolean isDirectional(int keyCode) {
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_LEFT:
case KeyEvent.KEYCODE_DPAD_RIGHT:
case KeyEvent.KEYCODE_DPAD_UP:
case KeyEvent.KEYCODE_DPAD_DOWN:
return true;
}
return false;
}
/**
* Returns true if this key is a keyboard key.
* @param keyEvent The key event.
* @return whether this key is a keyboard key.
*/
private static boolean isKeyboardKey(KeyEvent keyEvent) {
final int convertedKey = keyEvent.getUnicodeChar();
return convertedKey > 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) {
if (event.getAction() != KeyEvent.ACTION_DOWN) {
return false;
}
if ((event.getFlags()&KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) {
return false;
}
// only relevant if we are in touch mode
if (!mAttachInfo.mInTouchMode) {
return false;
}
// if something like an edit text has focus and the user is typing,
// leave touch mode
//
// note: the condition of not being a keyboard key is kind of a hacky
// approximation of whether we think the focused view will want the
// key; if we knew for sure whether the focused view would consume
// the event, that would be better.
if (isKeyboardKey(event) && mView != null && mView.hasFocus()) {
mFocusedView = mView.findFocus();
if ((mFocusedView instanceof ViewGroup)
&& ((ViewGroup) mFocusedView).getDescendantFocusability() ==
ViewGroup.FOCUS_AFTER_DESCENDANTS) {
// something has focus, but is holding it weakly as a container
return false;
}
if (ensureTouchMode(false)) {
throw new IllegalStateException("should not have changed focus "
+ "when leaving touch mode while a view has focus.");
}
return false;
}
if (isDirectional(event.getKeyCode())) {
// no view has focus, so we leave touch mode (and find something
// to give focus to). the event is consumed if we were able to
// find something to give focus to.
return ensureTouchMode(false);
}
return false;
}
/**
* log motion events
*/
private static void captureMotionLog(String subTag, MotionEvent ev) {
//check dynamic switch
if (ev == null ||
SystemProperties.getInt(ViewDebug.SYSTEM_PROPERTY_CAPTURE_EVENT, 0) == 0) {
return;
}
StringBuilder sb = new StringBuilder(subTag + ": ");
sb.append(ev.getDownTime()).append(',');
sb.append(ev.getEventTime()).append(',');
sb.append(ev.getAction()).append(',');
sb.append(ev.getX()).append(',');
sb.append(ev.getY()).append(',');
sb.append(ev.getPressure()).append(',');
sb.append(ev.getSize()).append(',');
sb.append(ev.getMetaState()).append(',');
sb.append(ev.getXPrecision()).append(',');
sb.append(ev.getYPrecision()).append(',');
sb.append(ev.getDeviceId()).append(',');
sb.append(ev.getEdgeFlags());
Log.d(TAG, sb.toString());
}
/**
* log motion events
*/
private static void captureKeyLog(String subTag, KeyEvent ev) {
//check dynamic switch
if (ev == null ||
SystemProperties.getInt(ViewDebug.SYSTEM_PROPERTY_CAPTURE_EVENT, 0) == 0) {
return;
}
StringBuilder sb = new StringBuilder(subTag + ": ");
sb.append(ev.getDownTime()).append(',');
sb.append(ev.getEventTime()).append(',');
sb.append(ev.getAction()).append(',');
sb.append(ev.getKeyCode()).append(',');
sb.append(ev.getRepeatCount()).append(',');
sb.append(ev.getMetaState()).append(',');
sb.append(ev.getDeviceId()).append(',');
sb.append(ev.getScanCode());
Log.d(TAG, sb.toString());
}
int enqueuePendingEvent(Object event, boolean sendDone) {
int seq = mPendingEventSeq+1;
if (seq < 0) seq = 0;
mPendingEventSeq = seq;
mPendingEvents.put(seq, event);
return sendDone ? seq : -seq;
}
Object retrievePendingEvent(int seq) {
if (seq < 0) seq = -seq;
Object event = mPendingEvents.get(seq);
if (event != null) {
mPendingEvents.remove(seq);
}
return event;
}
private void deliverKeyEvent(KeyEvent event, boolean sendDone) {
// If mView is null, we just consume the key event because it doesn't
// make sense to do anything else with it.
boolean handled = mView != null
? mView.dispatchKeyEventPreIme(event) : true;
if (handled) {
if (sendDone) {
if (LOCAL_LOGV) Log.v(
"ViewRoot", "Telling window manager key is finished");
try {
sWindowSession.finishKey(mWindow);
} catch (RemoteException e) {
}
}
return;
}
// If it is possible for this window to interact with the input
// method window, then we want to first dispatch our key events
// to the input method.
if (mLastWasImTarget) {
InputMethodManager imm = InputMethodManager.peekInstance();
if (imm != null && mView != null) {
int seq = enqueuePendingEvent(event, sendDone);
if (DEBUG_IMF) Log.v(TAG, "Sending key event to IME: seq="
+ seq + " event=" + event);
imm.dispatchKeyEvent(mView.getContext(), seq, event,
mInputMethodCallback);
return;
}
}
deliverKeyEventToViewHierarchy(event, sendDone);
}
void handleFinishedEvent(int seq, boolean handled) {
final KeyEvent event = (KeyEvent)retrievePendingEvent(seq);
if (DEBUG_IMF) Log.v(TAG, "IME finished event: seq=" + seq
+ " handled=" + handled + " event=" + event);
if (event != null) {
final boolean sendDone = seq >= 0;
if (!handled) {
deliverKeyEventToViewHierarchy(event, sendDone);
return;
} else if (sendDone) {
if (LOCAL_LOGV) Log.v(
"ViewRoot", "Telling window manager key is finished");
try {
sWindowSession.finishKey(mWindow);
} catch (RemoteException e) {
}
} else {
Log.w("ViewRoot", "handleFinishedEvent(seq=" + seq
+ " handled=" + handled + " ev=" + event
+ ") neither delivering nor finishing key");
}
}
}
private void deliverKeyEventToViewHierarchy(KeyEvent event, boolean sendDone) {
try {
if (mView != null && mAdded) {
final int action = event.getAction();
boolean isDown = (action == KeyEvent.ACTION_DOWN);
if (checkForLeavingTouchModeAndConsume(event)) {
return;
}
if (Config.LOGV) {
captureKeyLog("captureDispatchKeyEvent", event);
}
boolean keyHandled = mView.dispatchKeyEvent(event);
if (!keyHandled && isDown) {
int direction = 0;
switch (event.getKeyCode()) {
case KeyEvent.KEYCODE_DPAD_LEFT:
direction = View.FOCUS_LEFT;
break;
case KeyEvent.KEYCODE_DPAD_RIGHT:
direction = View.FOCUS_RIGHT;
break;
case KeyEvent.KEYCODE_DPAD_UP:
direction = View.FOCUS_UP;
break;
case KeyEvent.KEYCODE_DPAD_DOWN:
direction = View.FOCUS_DOWN;
break;
}
if (direction != 0) {
View focused = mView != null ? mView.findFocus() : null;
if (focused != null) {
View v = focused.focusSearch(direction);
boolean focusPassed = false;
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);
((ViewGroup) mView).offsetDescendantRectToMyCoords(focused, mTempRect);
((ViewGroup) mView).offsetRectIntoDescendantCoords(v, mTempRect);
focusPassed = v.requestFocus(direction, mTempRect);
}
if (!focusPassed) {
mView.dispatchUnhandledMove(focused, direction);
} else {
playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
}
}
}
}
}
} finally {
if (sendDone) {
if (LOCAL_LOGV) Log.v(
"ViewRoot", "Telling window manager key is finished");
try {
sWindowSession.finishKey(mWindow);
} catch (RemoteException e) {
}
}
// Let the exception fall through -- the looper will catch
// it and take care of the bad app for us.
}
}
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;
}
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);
}
int relayoutResult = sWindowSession.relayout(
mWindow, params,
(int) (mView.mMeasuredWidth * appScale + 0.5f),
(int) (mView.mMeasuredHeight * appScale + 0.5f),
viewVisibility, insetsPending, mWinFrame,
mPendingContentInsets, mPendingVisibleInsets, mSurface);
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();
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());
}
}
/**
* {@inheritDoc}
*/
public boolean performHapticFeedback(int effectId, boolean always) {
try {
return sWindowSession.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 die(boolean immediate) {
if (immediate) {
doDie();
} else {
sendEmptyMessage(DIE);
}
}
void doDie() {
checkThread();
if (Config.LOGV) Log.v("ViewRoot", "DIE in " + this + " of " + mSurface);
synchronized (this) {
if (mAdded && !mFirst) {
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)
& WindowManagerImpl.RELAYOUT_FIRST_TIME) != 0) {
sWindowSession.finishDrawing(mWindow);
}
} catch (RemoteException e) {
}
}
mSurface.release();
}
if (mAdded) {
mAdded = false;
dispatchDetachedFromWindow();
}
}
}
public void dispatchFinishedEvent(int seq, boolean handled) {
Message msg = obtainMessage(FINISHED_EVENT);
msg.arg1 = seq;
msg.arg2 = handled ? 1 : 0;
sendMessage(msg);
}
public void dispatchResized(int w, int h, Rect coveredInsets,
Rect visibleInsets, boolean reportDraw) {
if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": w=" + w
+ " h=" + h + " coveredInsets=" + coveredInsets.toShortString()
+ " visibleInsets=" + visibleInsets.toShortString()
+ " reportDraw=" + reportDraw);
Message msg = obtainMessage(reportDraw ? RESIZED_REPORT :RESIZED);
if (mTranslator != null) {
mTranslator.translateRectInScreenToAppWindow(coveredInsets);
mTranslator.translateRectInScreenToAppWindow(visibleInsets);
w *= mTranslator.applicationInvertedScale;
h *= mTranslator.applicationInvertedScale;
}
msg.arg1 = w;
msg.arg2 = h;
msg.obj = new Rect[] { new Rect(coveredInsets), new Rect(visibleInsets) };
sendMessage(msg);
}
public void dispatchKey(KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
//noinspection ConstantConditions
if (false && event.getKeyCode() == KeyEvent.KEYCODE_CAMERA) {
if (Config.LOGD) Log.d("keydisp",
"===================================================");
if (Config.LOGD) Log.d("keydisp", "Focused view Hierarchy is:");
debug();
if (Config.LOGD) Log.d("keydisp",
"===================================================");
}
}
Message msg = obtainMessage(DISPATCH_KEY);
msg.obj = event;
if (LOCAL_LOGV) Log.v(
"ViewRoot", "sending key " + event + " to " + mView);
sendMessageAtTime(msg, event.getEventTime());
}
public void dispatchPointer(MotionEvent event, long eventTime,
boolean callWhenDone) {
Message msg = obtainMessage(DISPATCH_POINTER);
msg.obj = event;
msg.arg1 = callWhenDone ? 1 : 0;
sendMessageAtTime(msg, eventTime);
}
public void dispatchTrackball(MotionEvent event, long eventTime,
boolean callWhenDone) {
Message msg = obtainMessage(DISPATCH_TRACKBALL);
msg.obj = event;
msg.arg1 = callWhenDone ? 1 : 0;
sendMessageAtTime(msg, eventTime);
}
public void dispatchAppVisibility(boolean visible) {
Message msg = obtainMessage(DISPATCH_APP_VISIBILITY);
msg.arg1 = visible ? 1 : 0;
sendMessage(msg);
}
public void dispatchGetNewSurface() {
Message msg = obtainMessage(DISPATCH_GET_NEW_SURFACE);
sendMessage(msg);
}
public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) {
Message msg = Message.obtain();
msg.what = WINDOW_FOCUS_CHANGED;
msg.arg1 = hasFocus ? 1 : 0;
msg.arg2 = inTouchMode ? 1 : 0;
sendMessage(msg);
}
public void dispatchCloseSystemDialogs(String reason) {
Message msg = Message.obtain();
msg.what = CLOSE_SYSTEM_DIALOGS;
msg.obj = reason;
sendMessage(msg);
}
/**
* The window is getting focus so if there is anything focused/selected
* send an {@link AccessibilityEvent} to announce that.
*/
private void sendAccessibilityEvents() {
if (!AccessibilityManager.getInstance(mView.getContext()).isEnabled()) {
return;
}
mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
View focusedView = mView.findFocus();
if (focusedView != null && focusedView != mView) {
focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED);
}
}
public boolean showContextMenuForChild(View originalView) {
return false;
}
public void createContextMenu(ContextMenu menu) {
}
public void childDrawableStateChanged(View child) {
}
protected Rect getWindowFrame() {
return mWinFrame;
}
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) {
// ViewRoot never intercepts touch event, so this can be a no-op
}
public boolean requestChildRectangleOnScreen(View child, Rect rectangle,
boolean immediate) {
return scrollToRectOrFocus(rectangle, immediate);
}
static class InputMethodCallback extends IInputMethodCallback.Stub {
private WeakReference<ViewRoot> mViewRoot;
public InputMethodCallback(ViewRoot viewRoot) {
mViewRoot = new WeakReference<ViewRoot>(viewRoot);
}
public void finishedEvent(int seq, boolean handled) {
final ViewRoot viewRoot = mViewRoot.get();
if (viewRoot != null) {
viewRoot.dispatchFinishedEvent(seq, handled);
}
}
public void sessionCreated(IInputMethodSession session) throws RemoteException {
// Stub -- not for use in the client.
}
}
static class EventCompletion extends Handler {
final IWindow mWindow;
final KeyEvent mKeyEvent;
final boolean mIsPointer;
final MotionEvent mMotionEvent;
EventCompletion(Looper looper, IWindow window, KeyEvent key,
boolean isPointer, MotionEvent motion) {
super(looper);
mWindow = window;
mKeyEvent = key;
mIsPointer = isPointer;
mMotionEvent = motion;
sendEmptyMessage(0);
}
@Override
public void handleMessage(Message msg) {
if (mKeyEvent != null) {
try {
sWindowSession.finishKey(mWindow);
} catch (RemoteException e) {
}
} else if (mIsPointer) {
boolean didFinish;
MotionEvent event = mMotionEvent;
if (event == null) {
try {
event = sWindowSession.getPendingPointerMove(mWindow);
} catch (RemoteException e) {
}
didFinish = true;
} else {
didFinish = event.getAction() == MotionEvent.ACTION_OUTSIDE;
}
if (!didFinish) {
try {
sWindowSession.finishKey(mWindow);
} catch (RemoteException e) {
}
}
} else {
MotionEvent event = mMotionEvent;
if (event == null) {
try {
event = sWindowSession.getPendingTrackballMove(mWindow);
} catch (RemoteException e) {
}
} else {
try {
sWindowSession.finishKey(mWindow);
} catch (RemoteException e) {
}
}
}
}
}
static class W extends IWindow.Stub {
private final WeakReference<ViewRoot> mViewRoot;
private final Looper mMainLooper;
public W(ViewRoot viewRoot, Context context) {
mViewRoot = new WeakReference<ViewRoot>(viewRoot);
mMainLooper = context.getMainLooper();
}
public void resized(int w, int h, Rect coveredInsets,
Rect visibleInsets, boolean reportDraw) {
final ViewRoot viewRoot = mViewRoot.get();
if (viewRoot != null) {
viewRoot.dispatchResized(w, h, coveredInsets,
visibleInsets, reportDraw);
}
}
public void dispatchKey(KeyEvent event) {
final ViewRoot viewRoot = mViewRoot.get();
if (viewRoot != null) {
viewRoot.dispatchKey(event);
} else {
Log.w("ViewRoot.W", "Key event " + event + " but no ViewRoot available!");
new EventCompletion(mMainLooper, this, event, false, null);
}
}
public void dispatchPointer(MotionEvent event, long eventTime,
boolean callWhenDone) {
final ViewRoot viewRoot = mViewRoot.get();
if (viewRoot != null) {
if (MEASURE_LATENCY) {
// Note: eventTime is in milliseconds
ViewRoot.lt.sample("* ViewRoot b4 dispatchPtr", System.nanoTime() - eventTime * 1000000);
}
viewRoot.dispatchPointer(event, eventTime, callWhenDone);
} else {
new EventCompletion(mMainLooper, this, null, true, event);
}
}
public void dispatchTrackball(MotionEvent event, long eventTime,
boolean callWhenDone) {
final ViewRoot viewRoot = mViewRoot.get();
if (viewRoot != null) {
viewRoot.dispatchTrackball(event, eventTime, callWhenDone);
} else {
new EventCompletion(mMainLooper, this, null, false, event);
}
}
public void dispatchAppVisibility(boolean visible) {
final ViewRoot viewRoot = mViewRoot.get();
if (viewRoot != null) {
viewRoot.dispatchAppVisibility(visible);
}
}
public void dispatchGetNewSurface() {
final ViewRoot viewRoot = mViewRoot.get();
if (viewRoot != null) {
viewRoot.dispatchGetNewSurface();
}
}
public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) {
final ViewRoot viewRoot = mViewRoot.get();
if (viewRoot != null) {
viewRoot.windowFocusChanged(hasFocus, inTouchMode);
}
}
private static int checkCallingPermission(String permission) {
if (!Process.supportsProcesses()) {
return PackageManager.PERMISSION_GRANTED;
}
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 ViewRoot viewRoot = mViewRoot.get();
if (viewRoot != null) {
final View view = viewRoot.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 ViewRoot viewRoot = mViewRoot.get();
if (viewRoot != null) {
viewRoot.dispatchCloseSystemDialogs(reason);
}
}
public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep,
boolean sync) {
if (sync) {
try {
sWindowSession.wallpaperOffsetsComplete(asBinder());
} catch (RemoteException e) {
}
}
}
public void dispatchWallpaperCommand(String action, int x, int y,
int z, Bundle extras, boolean sync) {
if (sync) {
try {
sWindowSession.wallpaperCommandComplete(asBinder(), null);
} catch (RemoteException e) {
}
}
}
}
/**
* 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;
}
/**
* @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;
}
}
}
private static native void nativeShowFPS(Canvas canvas, int durationMillis);
// inform skia to just abandon its texture cache IDs
// doesn't call glDeleteTextures
private static native void nativeAbandonGlCaches();
}