private Optional<Thumbnail> findBestFit(Image image, Integer width, Integer height) {
if (width == null || height == null) {
// First handle the case where we have only one dimension width or height
for (Thumbnail thumbnail : image.getThumbnails()) {
if ((thumbnail.getRatio().equals("1:0") && height == null)
|| (thumbnail.getRatio().equals("0:1") && width == null)) {
return Optional.of(thumbnail);
}
}
return Optional.absent();
}
// Then handle the general case where we have both dimensions width and height
Thumbnail foundRatio = null;
String expectedRatio = ImageUtils.imageRatio(width, height);
for (Thumbnail thumbnail : image.getThumbnails()) {
if (thumbnail.getRatio().equals(expectedRatio)) {
if (thumbnail.getWidth().equals(width) && thumbnail.getHeight().equals(height)) {
// Exact match, stop searching
return Optional.of(thumbnail);
} else {
// Ratio match, keep searching
foundRatio = thumbnail;
}
}
}
return Optional.fromNullable(foundRatio);
}
public ImageContext createImageContext(Image image, boolean featured) {
ImageContext context =
new ImageContext(
"/attachments/"
+ image.getAttachment().getSlug()
+ "."
+ image.getAttachment().getExtension());
context.setTitle(ContextUtils.safeString(image.getAttachment().getTitle()));
context.setDescription(ContextUtils.safeString(image.getAttachment().getDescription()));
context.put("featured", featured);
context.put(
"url",
MessageFormat.format(
"/images/{0}.{1}",
image.getAttachment().getSlug(), image.getAttachment().getExtension()));
if (theme != null && theme.getImageFormats().size() > 0) {
for (String dimensionName : theme.getImageFormats().keySet()) {
ImageFormatDefinition definition = theme.getImageFormats().get(dimensionName);
Optional<Thumbnail> bestFit =
findBestFit(image, definition.getWidth(), definition.getHeight());
if (bestFit.isPresent()) {
String url =
MessageFormat.format(
"/images/thumbnails/{0}_{1,number,#}_{2,number,#}_{3,number,#}_{4,number,#}.{5}"
+ "?width={6,number,#}&height={7,number,#}",
image.getAttachment().getSlug(),
bestFit.get().getX(),
bestFit.get().getY(),
bestFit.get().getWidth(),
bestFit.get().getHeight(),
image.getAttachment().getExtension(),
definition.getWidth(),
definition.getHeight());
context.put("theme_" + dimensionName + "_url", url);
} else {
String url =
MessageFormat.format(
"/images/{0}.{1}?width={2,number,#}&height={3,number,#}",
image.getAttachment().getSlug(),
image.getAttachment().getExtension(),
definition.getWidth(),
definition.getHeight());
context.put("theme_" + dimensionName + "_url", url);
}
}
}
return context;
}