| /* |
| * Copyright (C) 2011 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.server.wm; |
| |
| import android.view.animation.AccelerateInterpolator; |
| import android.view.animation.Animation; |
| import android.view.animation.Transformation; |
| |
| /** |
| * Animation that fade in after 0.5 interpolate time, or fade out in reverse order. |
| * This is used for opening/closing transition for apps in compatible mode. |
| */ |
| class FadeInOutAnimation extends Animation { |
| boolean mFadeIn; |
| |
| public FadeInOutAnimation(boolean fadeIn) { |
| setInterpolator(new AccelerateInterpolator()); |
| setDuration(WindowManagerService.DEFAULT_FADE_IN_OUT_DURATION); |
| mFadeIn = fadeIn; |
| } |
| |
| @Override |
| protected void applyTransformation(float interpolatedTime, Transformation t) { |
| float x = interpolatedTime; |
| if (!mFadeIn) { |
| x = 1.0f - x; // reverse the interpolation for fade out |
| } |
| t.setAlpha(x); |
| } |
| } |