/*
* Copyright (C) 2014 The Android Open Source Project
* Copyright (c) 2014 OpenSilk Productions LLC
*
* 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 org.opensilk.common.ui.widget;
import android.content.Context;
import android.util.AttributeSet;
import android.widget.ImageView;
/**
* Created by drew on 10/22/14.
*/
public class SquareImageView extends ImageView {
public SquareImageView(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
final int widthSize = MeasureSpec.getSize(widthMeasureSpec);
final int heightSize = MeasureSpec.getSize(heightMeasureSpec);
if (widthSize == 0 && heightSize == 0) {
// If there are no constraints on size, let FrameLayout measure
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
// Now use the smallest of the measured dimensions for both dimensions
final int minSize = Math.min(getMeasuredWidth(), getMeasuredHeight());
setMeasuredDimension(minSize, minSize);
return;
}
final int size;
if (widthSize == 0 || heightSize == 0) {
// If one of the dimensions has no restriction on size, set both dimensions to be the
// on that does
size = Math.max(widthSize, heightSize);
} else {
// Both dimensions have restrictions on size, set both dimensions to be the
// smallest of the two
size = Math.min(widthSize, heightSize);
}
final int newMeasureSpec = MeasureSpec.makeMeasureSpec(size, MeasureSpec.EXACTLY);
super.onMeasure(newMeasureSpec, newMeasureSpec);
requestLayout();
}
/**
* improves the performance by not passing
* requestLayout() to its parent, taking advantage of knowing that image size
* won't change once set.
*/
// @Override
// public void requestLayout() {
// forceLayout();
// }
}