| /* |
| * Copyright 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package androidx.preference.internal; |
| |
| import static androidx.annotation.RestrictTo.Scope.LIBRARY_GROUP; |
| |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| import androidx.annotation.RestrictTo; |
| import androidx.preference.R; |
| import android.util.AttributeSet; |
| import android.widget.ImageView; |
| |
| /** |
| * Extension of ImageView that correctly applies maxWidth and maxHeight. |
| * @hide |
| */ |
| @RestrictTo(LIBRARY_GROUP) |
| public class PreferenceImageView extends ImageView { |
| |
| private int mMaxWidth = Integer.MAX_VALUE; |
| private int mMaxHeight = Integer.MAX_VALUE; |
| |
| public PreferenceImageView(Context context) { |
| this(context, null); |
| } |
| |
| public PreferenceImageView(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public PreferenceImageView(Context context, AttributeSet attrs, int defStyleAttr) { |
| super(context, attrs, defStyleAttr); |
| |
| final TypedArray a = context.obtainStyledAttributes( |
| attrs, R.styleable.PreferenceImageView, defStyleAttr, 0); |
| |
| setMaxWidth(a.getDimensionPixelSize( |
| R.styleable.PreferenceImageView_maxWidth, Integer.MAX_VALUE)); |
| |
| setMaxHeight(a.getDimensionPixelSize( |
| R.styleable.PreferenceImageView_maxHeight, Integer.MAX_VALUE)); |
| |
| a.recycle(); |
| } |
| |
| // public PreferenceImageView(Context context, AttributeSet attrs, int defStyleAttr, |
| // int defStyleRes) { |
| // super(context, attrs, defStyleAttr, defStyleRes); |
| // } |
| |
| @Override |
| public void setMaxWidth(int maxWidth) { |
| mMaxWidth = maxWidth; |
| super.setMaxWidth(maxWidth); |
| } |
| |
| @Override |
| public int getMaxWidth() { |
| return mMaxWidth; |
| } |
| |
| @Override |
| public void setMaxHeight(int maxHeight) { |
| mMaxHeight = maxHeight; |
| super.setMaxHeight(maxHeight); |
| } |
| |
| @Override |
| public int getMaxHeight() { |
| return mMaxHeight; |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| final int widthMode = MeasureSpec.getMode(widthMeasureSpec); |
| if (widthMode == MeasureSpec.AT_MOST || widthMode == MeasureSpec.UNSPECIFIED) { |
| final int widthSize = MeasureSpec.getSize(widthMeasureSpec); |
| final int maxWidth = getMaxWidth(); |
| if (maxWidth != Integer.MAX_VALUE |
| && (maxWidth < widthSize || widthMode == MeasureSpec.UNSPECIFIED)) { |
| widthMeasureSpec = MeasureSpec.makeMeasureSpec(maxWidth, MeasureSpec.AT_MOST); |
| } |
| } |
| |
| final int heightMode = MeasureSpec.getMode(heightMeasureSpec); |
| if (heightMode == MeasureSpec.AT_MOST || heightMode == MeasureSpec.UNSPECIFIED) { |
| final int heightSize = MeasureSpec.getSize(heightMeasureSpec); |
| final int maxHeight = getMaxHeight(); |
| if (maxHeight != Integer.MAX_VALUE |
| && (maxHeight < heightSize || heightMode == MeasureSpec.UNSPECIFIED)) { |
| heightMeasureSpec = MeasureSpec.makeMeasureSpec(maxHeight, MeasureSpec.AT_MOST); |
| } |
| } |
| |
| super.onMeasure(widthMeasureSpec, heightMeasureSpec); |
| } |
| } |