private BufferedImage createThumbNailImage(Dimension imgSize, ProgressMonitor pm) {
Assert.notNull(pm, "pm");
String thumbNailBandName = getThumbnailBandName();
Band thumbNailBand = product.getBand(thumbNailBandName);
Debug.trace(
"ProductSubsetDialog: Reading thumbnail data for band '" + thumbNailBandName + "'...");
pm.beginTask("Creating thumbnail image", 5);
BufferedImage image = null;
try {
MultiLevelSource multiLevelSource =
BandImageMultiLevelSource.create(thumbNailBand, SubProgressMonitor.create(pm, 1));
final ImageLayer imageLayer = new ImageLayer(multiLevelSource);
final int imageWidth = imgSize.width;
final int imageHeight = imgSize.height;
final int imageType = BufferedImage.TYPE_3BYTE_BGR;
image = new BufferedImage(imageWidth, imageHeight, imageType);
Viewport snapshotVp = new DefaultViewport(isModelYAxisDown(imageLayer));
final BufferedImageRendering imageRendering = new BufferedImageRendering(image, snapshotVp);
final Graphics2D graphics = imageRendering.getGraphics();
graphics.setColor(getBackground());
graphics.fillRect(0, 0, imageWidth, imageHeight);
snapshotVp.zoom(imageLayer.getModelBounds());
snapshotVp.moveViewDelta(snapshotVp.getViewBounds().x, snapshotVp.getViewBounds().y);
imageLayer.render(imageRendering);
pm.worked(4);
} finally {
pm.done();
}
return image;
}
@Override
public final void draw(Rendering rendering) {
final Viewport vp = rendering.getViewport();
final AffineTransform m2v = vp.getModelToViewTransform();
final Point2D locationInView = m2v.transform(getLocation(), null);
final Graphics2D g = rendering.getGraphics();
try {
g.translate(locationInView.getX(), locationInView.getY());
drawPoint(rendering);
} finally {
g.translate(-locationInView.getX(), -locationInView.getY());
}
}