/** {@inheritDoc} */
public RenderedImage getPreviewImage(ImageInfo imageInfo, int maxWidth, int maxHeight)
throws BadImageFileException, IOException, UnknownImageTypeException {
final ImageMetadata metadata = imageInfo.getMetadata();
final ImageMetadataDirectory dir = metadata.getDirectoryFor(CIFFDirectory.class);
if (dir != null) {
final ImageMetaValue colorSpace = dir.getValue(CIFF_COLOR_SPACE);
ColorSpace cs = JAIContext.sRGBColorSpace;
if (colorSpace != null)
switch (colorSpace.getIntValue()) {
case CIFF_COLOR_SPACE_ADOBE_RGB:
cs = JAIContext.adobeRGBColorSpace;
break;
}
final RenderedImage image =
JPEGImageType.getImageFromBuffer(
imageInfo.getByteBuffer(),
dir.getValue(CIFF_PREVIEW_IMAGE_OFFSET),
0,
dir.getValue(CIFF_PREVIEW_IMAGE_LENGTH),
cs,
maxWidth,
maxHeight);
if (image != null) return image;
}
return super.getPreviewImage(imageInfo, maxWidth, maxHeight);
}
protected void paintComponent(Graphics graphics) {
if (justShown) {
if (!paintTimer.isRunning()) paintTimer.start();
return;
}
if (!isWidthInitialized) {
// Only paint if the component size has been initialized. Layout
// jumps are typical the first time this component is displayed,
// because the preferred height depends on the component width.
return;
}
Graphics2D g = (Graphics2D) graphics;
Rectangle clip = g.getClipBounds();
// Figure out which ImageDatums fall within the clip bounds.
List<ImageDatum> datums = getAllImageData();
int[] indices = getIndices(datums.size(), clip);
// Iterate backwards through indices, so repaints get enqueued
// in a visually pleasing order.
for (int i = indices.length - 1; i >= 0; i--) {
int index = indices[i];
if (index < 0) {
continue;
}
ImageDatum datum = datums.get(index);
if (datum == null) {
// A race; the image disappeared during painting.
continue;
}
RenderedImage image = datum.getImage(this);
// This queue prevents GC of recently painted images:
recentImages.add(image);
Rectangle rect = getBounds(index);
g.setClip(clip.intersection(rect));
File file = datum.getFile();
String label = file.getName();
ImageDatumType type = datum.getType();
String tag = type.toString();
ImageMetadata meta = datum.getMetadata(true);
int rating = meta.getRating();
boolean selected = selection.isSelected(datum);
renderer.paint(g, image, label, tag, rating, rect, selected);
ImageGroup group = datum.getGroup();
if (group.isNonTrivial()) {
ImageGroupCountRenderer.paint(g, rect, datum);
}
}
g.setClip(clip);
// The control is drawn as an overlay.
if (controller.isEnabled()) {
Rectangle ctrlRect = controller.getRect();
if (ctrlRect != null) {
if (ctrlRect.intersects(clip)) {
controller.paint(g);
}
}
}
}