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| package photospace.graphics; |
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| |
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| import java.awt.*; |
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| import java.awt.image.*; |
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| import java.io.*; |
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| import java.util.*; |
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| import java.util.List; |
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| import org.apache.commons.logging.*; |
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| import com.sun.image.codec.jpeg.*; |
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| import photospace.vfs.*; |
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| import photospace.vfs.event.*; |
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| |
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| public class ImageCache |
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| implements java.io.Serializable |
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| { |
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| private static final Log log = LogFactory.getLog(ImageCache.class); |
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| |
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| private static final Transform[] transforms = new Transform[] { |
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| new Transform(new Dimension(1000, 500), Transform.FIT), |
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| new Transform(new Dimension(100, 100), Transform.FILL), |
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| new Transform(new Dimension(50, 50), Transform.FILL), |
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| }; |
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| |
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| private File root; |
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| private FileSystem filesystem; |
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| private FileSystemWatcher watcher; |
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| |
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1
| public void setRoot(File root)
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| { |
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1
| this.root = root;
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1
| log.info("Using image cache root " + root);
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| } |
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| |
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34 |
0
| public int sync()
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| { |
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0
| return sync(getPhotoFiles());
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| } |
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| |
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0
| private File[] getPhotoFiles()
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| { |
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0
| List files = new ArrayList(watcher.getSnapshot().keySet());
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0
| FileFilter filter = new PhotoFileFilter();
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0
| for (Iterator i = files.iterator(); i.hasNext();)
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| { |
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| File file = (File) i.next();
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0
| if (!filter.accept(file)) i.remove();
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| } |
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0
| return (File[]) files.toArray(new File[] {});
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| } |
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| |
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2
| public int sync(File[] files)
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| { |
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2
| int count = 0;
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2
| for (int i = 0; i < files.length; i++)
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| { |
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0
| if (files[i].isDirectory()) continue;
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0
| if (!files[i].exists()) continue;
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58 |
4
| String path = filesystem.getPath(files[i]);
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0
| if (log.isDebugEnabled()) log.debug("Updating cache for " + transforms.length + " sizes of " + path);
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60 |
4
| boolean updated = update(files[i], path, transforms);
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2
| if (updated) count++;
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| } |
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2
| return count;
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| } |
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| |
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4
| public boolean update(File file, String path, Transform[] transforms)
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| { |
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4
| boolean updated = false;
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4
| try
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| { |
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4
| BufferedImage image = null;
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4
| for (int i = 0; i < transforms.length; i++)
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| { |
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12
| File cached = cachedFile(path, transforms[i]);
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6
| if (cached.exists() && cached.lastModified() >= file.lastModified()) continue;
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| |
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2
| if (image == null) image = Sampler.read(file);
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78 |
6
| scale(image, path, transforms[i]);
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79 |
6
| updated = true;
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| } |
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| } |
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| catch (Exception e) |
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| { |
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0
| log.error("Error updating image cache for " + file);
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| } |
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4
| return updated;
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| } |
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| |
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6
| public BufferedImage scale(BufferedImage image, String path, Transform transform)
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| throws IOException |
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| { |
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| BufferedImage scaled = Sampler.scale(image, transform);
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| cache(scaled, path, transform);
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| return scaled;
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| } |
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| |
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| public void cache(BufferedImage image, String path, Transform transform)
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| throws IOException |
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| { |
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6
| File cached = cachedFile(path, transform);
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0
| if (!cached.getParentFile().exists()) cached.getParentFile().mkdirs();
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102 |
6
| write(image, new FileOutputStream(cached));
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| } |
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| |
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6
| private void write(BufferedImage image, OutputStream out) throws IOException
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| { |
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6
| JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
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108 |
6
| encoder.encode(image);
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109 |
6
| out.close();
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| } |
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| |
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112 |
18
| public File cachedFile(String path, Transform transform)
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|
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| { |
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114 |
18
| return new File(root, path + "#" +
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| "w=" + transform.getDimension().width + |
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| "&h=" + transform.getDimension().height + |
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| "&scale=" + transform.getScale()); |
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| } |
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| |
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120 |
1
| public void setFilesystem(FileSystem filesystem)
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|
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| { |
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122 |
1
| this.filesystem = filesystem;
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| } |
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| |
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125 |
0
| public void setWatcher(FileSystemWatcher watcher)
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| { |
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127 |
0
| this.watcher = watcher;
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128 |
| } |
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129 |
| } |
