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/*
* Copyright (C) 2012 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.tools.layoutlib.annotations.LayoutlibDelegate;
import android.animation.AnimationHandler;
import android.util.TimeUtils;
import android.view.animation.AnimationUtils;
import java.util.concurrent.atomic.AtomicReference;
/**
* Delegate used to provide new implementation of a select few methods of {@link Choreographer}
*
* Through the layoutlib_create tool, the original methods of Choreographer have been
* replaced by calls to methods of the same name in this delegate class.
*
*/
public class Choreographer_Delegate {
private static final AtomicReference<Choreographer> mInstance = new AtomicReference<Choreographer>();
@LayoutlibDelegate
public static Choreographer getInstance() {
if (mInstance.get() == null) {
mInstance.compareAndSet(null, Choreographer.getInstance_Original());
}
return mInstance.get();
}
@LayoutlibDelegate
public static float getRefreshRate() {
return 60.f;
}
@LayoutlibDelegate
static void scheduleVsyncLocked(Choreographer thisChoreographer) {
// do nothing
}
public static void doFrame(long frameTimeNanos) {
Choreographer thisChoreographer = Choreographer.getInstance();
AnimationUtils.lockAnimationClock(frameTimeNanos / TimeUtils.NANOS_PER_MS);
try {
thisChoreographer.mLastFrameTimeNanos = frameTimeNanos - thisChoreographer.getFrameIntervalNanos();
thisChoreographer.mFrameInfo.markInputHandlingStart();
thisChoreographer.doCallbacks(Choreographer.CALLBACK_INPUT, frameTimeNanos);
thisChoreographer.mFrameInfo.markAnimationsStart();
thisChoreographer.doCallbacks(Choreographer.CALLBACK_ANIMATION, frameTimeNanos);
thisChoreographer.mFrameInfo.markPerformTraversalsStart();
thisChoreographer.doCallbacks(Choreographer.CALLBACK_TRAVERSAL, frameTimeNanos);
thisChoreographer.doCallbacks(Choreographer.CALLBACK_COMMIT, frameTimeNanos);
} finally {
AnimationUtils.unlockAnimationClock();
}
}
public static void clearFrames() {
Choreographer thisChoreographer = Choreographer.getInstance();
thisChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, null, null);
thisChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, null, null);
thisChoreographer.removeCallbacks(Choreographer.CALLBACK_TRAVERSAL, null, null);
thisChoreographer.removeCallbacks(Choreographer.CALLBACK_COMMIT, null, null);
// Release animation handler instance since it holds references to the callbacks
AnimationHandler.sAnimatorHandler.set(null);
}
public static void dispose() {
clearFrames();
Choreographer.releaseInstance();
}
}
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