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
17package 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.
22public class FadeOutTexture extends FadeTexture {
23    @SuppressWarnings("unused")
24    private static final String TAG = "FadeOutTexture";
25
26    private final BasicTexture mTexture;
27
28    public FadeOutTexture(BasicTexture texture) {
29        super(texture.getWidth(), texture.getHeight(), texture.isOpaque());
30        mTexture = texture;
31    }
32
33    @Override
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