1 /*
2  * Copyright (C) 2011 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.gallery3d.glrenderer;
18 
19 
20 // FadeOutTexture is a texture which begins with a given texture, then gradually animates
21 // into fading out totally.
22 public class FadeOutTexture extends FadeTexture {
23     @SuppressWarnings("unused")
24     private static final String TAG = "FadeOutTexture";
25 
26     private final BasicTexture mTexture;
27 
FadeOutTexture(BasicTexture texture)28     public FadeOutTexture(BasicTexture texture) {
29         super(texture.getWidth(), texture.getHeight(), texture.isOpaque());
30         mTexture = texture;
31     }
32 
33     @Override
draw(GLCanvas canvas, int x, int y, int w, int h)34     public void draw(GLCanvas canvas, int x, int y, int w, int h) {
35         if (isAnimating()) {
36             canvas.save(GLCanvas.SAVE_FLAG_ALPHA);
37             canvas.setAlpha(getRatio());
38             mTexture.draw(canvas, x, y, w, h);
39             canvas.restore();
40         }
41     }
42 }
43