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Diffstat (limited to 'src/com/android/gallery3d/ui/AnimationTime.java')
-rw-r--r-- | src/com/android/gallery3d/ui/AnimationTime.java | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/ui/AnimationTime.java b/src/com/android/gallery3d/ui/AnimationTime.java new file mode 100644 index 000000000..063677423 --- /dev/null +++ b/src/com/android/gallery3d/ui/AnimationTime.java @@ -0,0 +1,45 @@ + +/* + * 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 com.android.gallery3d.ui; + +import android.os.SystemClock; + +// +// The animation time should ideally be the vsync time the frame will be +// displayed, but that is an unknown time in the future. So we use the system +// time just after eglSwapBuffers (when GLSurfaceView.onDrawFrame is called) +// as a approximation. +// +public class AnimationTime { + private static volatile long sTime; + + // Sets current time as the animation time. + public static void update() { + sTime = SystemClock.uptimeMillis(); + } + + // Returns the animation time. + public static long get() { + return sTime; + } + + public static long startTime() { + sTime = SystemClock.uptimeMillis(); + return sTime; + } +} |