ImageUtil.java

/**
 * Copyright (C) 2013 Johannes Schnatterer
 *
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This file is part of nusic.
 *
 * nusic 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.
 *
 * nusic 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 nusic.  If not, see <http://www.gnu.org/licenses/>.
 */
package info.schnatterer.nusic.android.util;

import java.io.InputStream;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import android.annotation.TargetApi;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Build;

public class ImageUtil {
    private static final Logger LOG = LoggerFactory.getLogger(ImageUtil.class);

    private ImageUtil() {
    }

    public static Bitmap createScaledBitmap(InputStream inputStream,
            Context context) {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
            return createScaledBitmapLegacy(inputStream, context);
        } else {
            return createScaledBitmapModern(inputStream, context);
        }
    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    private static Bitmap createScaledBitmapModern(InputStream inputStream,
            Context context) {
        Bitmap artwork = BitmapFactory.decodeStream(inputStream);
        if (artwork != null) {
            artwork = Bitmap.createScaledBitmap(
                    artwork,
                    (int) context.getResources().getDimension(
                            android.R.dimen.notification_large_icon_width),
                    (int) context.getResources().getDimension(
                            android.R.dimen.notification_large_icon_height),
                    false);
        } else {
            LOG.debug("Unable to read bitmap from stream. Stream null?");
        }
        return artwork;
    }

    private static Bitmap createScaledBitmapLegacy(InputStream inputStream,
            Context context) {
        /*
         * As we don't know the size of the notification icon bellow API lvl 11,
         * theses devices will just use the standard icon.
         */
        return null;
    }
}