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;
}
public static void displayImage(
File location, String extension, AffineTransform imageToModelTransform, int levelCount) {
final LayerCanvas layerCanvas = new LayerCanvas();
installLayerCanvasNavigation(layerCanvas);
final Layer collectionLayer = layerCanvas.getLayer();
final MultiLevelSource source =
FileMultiLevelSource.create(location, extension, imageToModelTransform, levelCount);
final ImageLayer layer = new ImageLayer(source);
collectionLayer.getChildren().add(layer);
final Rectangle viewportBounds = new Rectangle(0, 0, 640, 480);
layerCanvas.setPreferredSize(new Dimension(640, 480));
layerCanvas.getViewport().setViewBounds(viewportBounds);
layerCanvas.getViewport().zoom(layer.getModelBounds());
openFrame(layerCanvas, location.getPath(), viewportBounds);
}