SquareImageView.java

/*
 * Copyright 2015 Lafayette College
 *
 * This file is part of OpenCVTour.
 *
 * OpenCVTour is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * OpenCVTour is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with OpenCVTour.  If not, see <http://www.gnu.org/licenses/>.
 */

package alicrow.opencvtour;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.ImageView;

/**
 * ImageView that forces the height to match the width.
 */
public class SquareImageView extends ImageView {

	public SquareImageView(Context context) {
		super(context);
	}

	public SquareImageView(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	public SquareImageView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
	}

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		super.onMeasure(widthMeasureSpec, heightMeasureSpec);

		/// set the height equal to the width so the image is square.
		int width = getMeasuredWidth();
		setMeasuredDimension(width, width);
	}

}