@Override
public Map<String, URI> getGeneratedImagesPaths(URI uri) throws URISyntaxException {
Map<String, URI> generatedImages = new HashMap();
for (ImageStyle imageStyle : imageStyles.values()) {
generatedImages.put(imageStyle.getKey(), buildGeneratedImagePath(imageStyle, uri));
}
return generatedImages;
}
@Override
public Map<String, URL> getGeneratedImagesUrls(URI uri) throws Exception {
Map<String, URL> generatedImages = new HashMap();
for (ImageStyle imageStyle : imageStyles.values()) {
generatedImages.put(
imageStyle.getKey(), fileService.getUrl(buildGeneratedImagePath(imageStyle, uri)));
}
return generatedImages;
}
@Async
@Override
public void processImage(URI uri) throws Exception {
File image = fileService.get(uri);
final BufferedImage bufferedImage = ImageIO.read(image);
for (ImageStyle imageStyle : imageStyles.values()) {
BufferedImage styledImage = imageStyle.process(bufferedImage);
File imageFile = fileService.create(buildGeneratedImagePath(imageStyle, uri));
ImageIO.write(styledImage, FilenameUtils.getExtension(image.getName()), imageFile);
}
}
private URI buildGeneratedImagePath(ImageStyle imageStyle, URI uri) throws URISyntaxException {
return new URI(
uri.getScheme()
+ "://"
+ GENERATED_IMAGES_PATH
+ "/"
+ imageStyle.getKey()
+ uri.getPath());
}
/**
* Predefined image styles generation
*
* @return
*/
private Map<String, ImageStyle> generateImageStyles() {
Map<String, ImageStyle> imageStyles = new HashMap();
ImageStyle thumbnailStyle = new ImageStyle(THUMBNAIL_STYLE);
thumbnailStyle.addProcessor(new ImageScaleAndCrop(150, 150, false));
imageStyles.put(THUMBNAIL_STYLE, thumbnailStyle);
ImageStyle mediumStyle = new ImageStyle(MEDIUM_STYLE);
mediumStyle.addProcessor(new ImageScale(490, 0, false));
imageStyles.put(MEDIUM_STYLE, mediumStyle);
ImageStyle largeStyle = new ImageStyle(LARGE_STYLE);
largeStyle.addProcessor(new ImageScale(1280, 0, false));
imageStyles.put(LARGE_STYLE, largeStyle);
ImageStyle responsiveScaledStyle = new ImageStyle(RESPONSIVE_SCALED_STYLE);
responsiveScaledStyle.addProcessor(new ImageScale(980, 0, false));
imageStyles.put(RESPONSIVE_SCALED_STYLE, responsiveScaledStyle);
return imageStyles;
}