de.fips.plugin.tinyaudioplayer.notifier.NotifierCoverProvider.java Source code

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Here is the source code for de.fips.plugin.tinyaudioplayer.notifier.NotifierCoverProvider.java

Source

/*
 * Copyright  2011-2012 Philipp Eichhorn.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package de.fips.plugin.tinyaudioplayer.notifier;

import static de.fips.plugin.tinyaudioplayer.TinyAudioPlayerConstants.COVER_DETECTION_PATTERN;

import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.net.URI;

import lombok.val;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;

import de.fips.plugin.tinyaudioplayer.TinyAudioPlayerPlugin;

public class NotifierCoverProvider {
    public Image loadCoverFor(final URI location) {
        Image thumbnail = null;
        File parent = null;
        try {
            val file = new File(location);
            parent = file.getParentFile();
        } catch (IllegalArgumentException ignore) {
            // File(URI) preconditions did not hold
        }
        if (parent != null) {
            String[] coverNames = parent.list(new FilenameFilter() {
                @Override
                public boolean accept(File file, String s) {
                    val matcher = COVER_DETECTION_PATTERN.matcher(s.toLowerCase());
                    return matcher.matches();
                }
            });
            if (coverNames.length > 0) {
                try {
                    val coverFile = new File(parent, coverNames[0]).getCanonicalFile().getAbsoluteFile();
                    thumbnail = TinyAudioPlayerPlugin.getDefaultImageRegistry().get(coverFile.getPath());
                    if (thumbnail == null) {
                        val imageURL = coverFile.toURI().toURL();
                        val descriptor = ImageDescriptor.createFromURL(imageURL);
                        thumbnail = descriptor.createImage();
                        thumbnail = new Image(Display.getDefault(), thumbnail.getImageData().scaledTo(80, 80));
                        TinyAudioPlayerPlugin.getDefaultImageRegistry().put(coverFile.getPath(), thumbnail);
                    }
                } catch (IOException ignore) {
                }
            }
        }
        return thumbnail;
    }
}