public synchronized ImageResource get(final String uri, final int width, final int height) {
if (ImageUtil.isEmbeddedBase64Image(uri)) {
ImageResource resource = loadEmbeddedBase64ImageResource(uri);
BufferedImage newImg = ((AWTFSImage) resource.getImage()).getImage();
return new ImageResource(
resource.getImageUri(),
AWTFSImage.createImage(ImageUtils.scaleImage(newImg, width, height)));
} else {
CacheKey key = new CacheKey(uri, width, height);
ImageResource ir = (ImageResource) _imageCache.get(key);
if (ir == null) {
// not loaded, or not loaded at target size
// loaded a base size?
ir = (ImageResource) _imageCache.get(new CacheKey(uri, -1, -1));
// no: loaded
if (ir == null) {
if (isImmediateLoadUri(uri)) {
XRLog.load(Level.FINE, "Load immediate: " + uri);
ir = loadImageResourceFromUri(uri);
FSImage awtfsImage = ir.getImage();
BufferedImage newImg = ((AWTFSImage) awtfsImage).getImage();
loaded(ir, -1, -1);
if (width > -1 && height > -1) {
XRLog.load(Level.FINE, this + ", scaling " + uri + " to " + width + ", " + height);
newImg = ImageUtils.scaleImage(newImg, width, height);
ir = new ImageResource(ir.getImageUri(), AWTFSImage.createImage(newImg));
loaded(ir, width, height);
}
} else {
XRLog.load(Level.FINE, "Image cache miss, URI not yet loaded, queueing: " + uri);
MutableFSImage mfsi = new MutableFSImage(_repaintListener);
ir = new ImageResource(uri, mfsi);
_loadQueue.addToQueue(this, uri, mfsi, width, height);
}
_imageCache.put(key, ir);
} else {
// loaded at base size, need to scale
XRLog.load(Level.FINE, this + ", scaling " + uri + " to " + width + ", " + height);
FSImage awtfsImage = ir.getImage();
BufferedImage newImg = ((AWTFSImage) awtfsImage).getImage();
newImg = ImageUtils.scaleImage(newImg, width, height);
ir = new ImageResource(ir.getImageUri(), AWTFSImage.createImage(newImg));
loaded(ir, width, height);
}
}
return ir;
}
}
public static ImageResource loadImageResourceFromUri(final String uri) {
if (ImageUtil.isEmbeddedBase64Image(uri)) {
return loadEmbeddedBase64ImageResource(uri);
} else {
StreamResource sr = new StreamResource(uri);
InputStream is;
ImageResource ir = null;
try {
sr.connect();
is = sr.bufferedStream();
try {
BufferedImage img = ImageIO.read(is);
if (img == null) {
throw new IOException("ImageIO.read() returned null");
}
ir = createImageResource(uri, img);
} catch (FileNotFoundException e) {
XRLog.exception("Can't read image file; image at URI '" + uri + "' not found");
} catch (IOException e) {
XRLog.exception("Can't read image file; unexpected problem for URI '" + uri + "'", e);
} finally {
sr.close();
}
} catch (IOException e) {
// couldnt open stream at URI...
XRLog.exception("Can't open stream for URI '" + uri + "': " + e.getMessage());
}
// When we do this we return null which will raise an exception on layout/render, which
// will allow us to use the fallback discover page in cases when the network/site are
// unavailable
// if (ir == null) {
// ir = createImageResource(uri, null);
// }
return ir;
}
}
