MyScrollView.java

/*
    DroidFish - An Android chess program.
    Copyright (C) 2011  Peter Österlund, peterosterlund2@gmail.com

    This program 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.

    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/

package org.petero.droidfish;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ScrollView;

/** A ScrollView that uses at most 75% of the parent height. */
public class MyScrollView extends ScrollView {

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

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        int width = getMeasuredWidth();
        int height = getMeasuredHeight();
        if (getParent() instanceof View) {
            int parentHeight = ((View)getParent()).getHeight();
            if (parentHeight > 0)
                height = Math.min(height, parentHeight * 3 / 4);
        }
        setMeasuredDimension(width, height);
    }
}