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 17 package com.android.systemui.statusbar; 18 19 import android.content.Context; 20 import android.util.AttributeSet; 21 import 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 */ 27 public 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
