1 2 /* 3 * Copyright (C) 2012 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package com.android.gallery3d.ui; 19 20 import android.os.SystemClock; 21 22 // 23 // The animation time should ideally be the vsync time the frame will be 24 // displayed, but that is an unknown time in the future. So we use the system 25 // time just after eglSwapBuffers (when GLSurfaceView.onDrawFrame is called) 26 // as a approximation. 27 // 28 public class AnimationTime { 29 private static volatile long sTime; 30 31 // Sets current time as the animation time. update()32 public static void update() { 33 sTime = SystemClock.uptimeMillis(); 34 } 35 36 // Returns the animation time. get()37 public static long get() { 38 return sTime; 39 } 40 startTime()41 public static long startTime() { 42 sTime = SystemClock.uptimeMillis(); 43 return sTime; 44 } 45 } 46