1/*
2 * Copyright (C) 2014 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.systemui.statusbar;
18
19import android.content.Context;
20import android.util.AttributeSet;
21import android.widget.ImageView;
22
23/**
24 * An ImageView which supports an attribute specifying whether it has overlapping rendering
25 * commands and therefore does not need a layer when alpha is changed.
26 */
27public class AlphaOptimizedImageView extends ImageView {
28
29    public AlphaOptimizedImageView(Context context) {
30        this(context, null /* attrs */);
31    }
32
33    public AlphaOptimizedImageView(Context context, AttributeSet attrs) {
34        this(context, attrs, 0 /* defStyleAttr */);
35    }
36
37    public AlphaOptimizedImageView(Context context, AttributeSet attrs, int defStyleAttr) {
38        this(context, attrs, defStyleAttr, 0 /* defStyleRes */);
39    }
40
41    public AlphaOptimizedImageView(Context context, AttributeSet attrs, int defStyleAttr,
42            int defStyleRes) {
43        super(context, attrs, defStyleAttr, defStyleRes);
44    }
45
46    @Override
47    public boolean hasOverlappingRendering() {
48        return false;
49    }
50}
51