@GET
@Path("thumbnails/{slug}_{x: \\d+}_{y: \\d+}_{width: \\d+}_{height: \\d+}.{ext}")
public Response downloadThumbnail(
@PathParam("slug") String slug,
@PathParam("ext") String extension,
@PathParam("x") Integer x,
@PathParam("y") Integer y,
@PathParam("width") Integer width,
@PathParam("height") Integer height,
@Context ServletContext servletContext,
@Context Optional<ImageOptions> imageOptions) {
if (!IMAGE_EXTENSIONS.contains(extension)) {
// Refuse to treat a request with image options for a non-image attachment
return Response.status(Response.Status.BAD_REQUEST).entity("Not an image").build();
}
String fileName = slug + "." + extension;
Attachment file = this.getAttachmentStore().findBySlugAndExtension(slug, extension);
if (file == null) {
return Response.status(Response.Status.NOT_FOUND).build();
}
try {
Image image = imageService.readImage(file.getData());
Rectangle boundaries = new Rectangle(x, y, width, height);
RenderedImage cropped = imageService.cropImage(image, boundaries);
if (imageOptions.isPresent()) {
Optional<Dimension> newDimension =
imageService.newDimension(
(Image) cropped, imageOptions.get().getWidth(), imageOptions.get().getHeight());
Dimension dimensions =
newDimension.or(
new Dimension(
imageOptions.get().getWidth().get(), imageOptions.get().getHeight().get()));
return Response.ok(
imageService.scaleImage((Image) cropped, dimensions),
servletContext.getMimeType(fileName))
.header("Content-disposition", "inline; filename*=utf-8''" + fileName)
.build();
} else {
return Response.ok(cropped, servletContext.getMimeType(fileName))
.header("Content-disposition", "inline; filename*=utf-8''" + fileName)
.build();
}
} catch (IOException e) {
this.logger.warn("Failed to scale image for attachment [{slug}]", slug);
return Response.serverError().entity("Failed to scale image").build();
}
}
@GET
@Path("{slug}.{ext}")
public Response downloadImage(
@PathParam("slug") String slug,
@PathParam("ext") String extension,
@Context ServletContext servletContext,
@Context Optional<ImageOptions> imageOptions) {
if (!IMAGE_EXTENSIONS.contains(extension)) {
// Refuse to treat a request with image options for a non-image attachment
return Response.status(Response.Status.BAD_REQUEST).entity("Not an image").build();
}
if (imageOptions.isPresent()) {
String fileName = slug + "." + extension;
Attachment file = this.getAttachmentStore().findBySlugAndExtension(slug, extension);
if (file == null) {
return Response.status(Response.Status.NOT_FOUND).build();
}
try {
Image image = imageService.readImage(file.getData());
if (imageOptions.get().getHeight().isPresent()
&& imageOptions.get().getWidth().isPresent()) {
// Both width and height set -> calculate a fitting box
Dimension dimension =
new Dimension(
imageOptions.get().getWidth().get(), imageOptions.get().getHeight().get());
Optional<Rectangle> fittingBox = imageService.getFittingRectangle(image, dimension);
RenderedImage scaled;
if (fittingBox.isPresent()) {
RenderedImage cropped = imageService.cropImage(image, fittingBox.get());
scaled = imageService.scaleImage((Image) cropped, dimension);
} else {
scaled = imageService.scaleImage(image, dimension);
}
return Response.ok(scaled, servletContext.getMimeType(fileName))
.header("Content-disposition", "inline; filename*=utf-8''" + fileName)
.build();
} else {
Optional<Dimension> newDimension =
imageService.newDimension(
image, imageOptions.get().getWidth(), imageOptions.get().getHeight());
if (newDimension.isPresent()) {
return Response.ok(
imageService.scaleImage(image, newDimension.get()),
servletContext.getMimeType(fileName))
.header("Content-disposition", "inline; filename*=utf-8''" + fileName)
.build();
}
return Response.ok(image, servletContext.getMimeType(fileName))
.header("Content-disposition", "inline; filename*=utf-8''" + fileName)
.build();
}
} catch (IOException e) {
this.logger.warn("Failed to scale image for attachment [{slug}]", slug);
return Response.serverError().entity("Failed to scale image").build();
}
}
return this.downloadFile(slug, extension, servletContext);
}