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.internal.widget; 18 19 import android.content.Context; 20 import android.util.AttributeSet; 21 import android.widget.ImageView; 22 23 /** 24 * Extension of ImageView that correctly applies maxWidth and maxHeight. 25 */ 26 public class PreferenceImageView extends ImageView { 27 28 public PreferenceImageView(Context context) { 29 this(context, null); 30 } 31 32 public PreferenceImageView(Context context, AttributeSet attrs) { 33 this(context, attrs, 0); 34 } 35 36 public PreferenceImageView(Context context, AttributeSet attrs, int defStyleAttr) { 37 this(context, attrs, defStyleAttr, 0); 38 } 39 40 public PreferenceImageView(Context context, AttributeSet attrs, int defStyleAttr, 41 int defStyleRes) { 42 super(context, attrs, defStyleAttr, defStyleRes); 43 } 44 45 @Override 46 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 47 final int widthMode = MeasureSpec.getMode(widthMeasureSpec); 48 if (widthMode == MeasureSpec.AT_MOST || widthMode == MeasureSpec.UNSPECIFIED) { 49 final int widthSize = MeasureSpec.getSize(widthMeasureSpec); 50 final int maxWidth = getMaxWidth(); 51 if (maxWidth != Integer.MAX_VALUE 52 && (maxWidth < widthSize || widthMode == MeasureSpec.UNSPECIFIED)) { 53 widthMeasureSpec = MeasureSpec.makeMeasureSpec(maxWidth, MeasureSpec.AT_MOST); 54 } 55 } 56 57 final int heightMode = MeasureSpec.getMode(heightMeasureSpec); 58 if (heightMode == MeasureSpec.AT_MOST || heightMode == MeasureSpec.UNSPECIFIED) { 59 final int heightSize = MeasureSpec.getSize(heightMeasureSpec); 60 final int maxHeight = getMaxHeight(); 61 if (maxHeight != Integer.MAX_VALUE 62 && (maxHeight < heightSize || heightMode == MeasureSpec.UNSPECIFIED)) { 63 heightMeasureSpec = MeasureSpec.makeMeasureSpec(maxHeight, MeasureSpec.AT_MOST); 64 } 65 } 66 67 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 68 } 69 } 70
