ShelfView.java

/**
 * Copyright (c) 2013-2014. Francisco Contreras, Holland Salazar.
 * Copyright (c) 2015. Tobias Strebitzer, Francisco Contreras, Holland Salazar.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other materials
 * provided with the distribution.
 * Neither the name of the Baker Framework nor the names of its contributors may be used to
 * endorse or promote products derived from this software without specific prior written
 * permission.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 **/
package com.bakerframework.baker.view;

import android.content.Context;
import android.content.res.Configuration;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.widget.GridView;

public class ShelfView extends GridView {

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

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        updateColumnCount();
        super.onConfigurationChanged(newConfig);
    }

    private void updateColumnCount() {

        // Get metrics information
        DisplayMetrics metrics = getResources().getDisplayMetrics();

        int width = metrics.widthPixels;

        // Each issue card needs at lease 550px width to display correctly
        int columnCount = ((int) Math.max(Math.floor(width / 550), 1));
        setNumColumns(columnCount);

    }


}