/**
* Draw and resizes (transparent) image. Calls writeImage(...).
*
* @param image image to be drawn
* @param dx1 destination image bounds
* @param dy1 destination image bounds
* @param dx2 destination image bounds
* @param dy2 destination image bounds
* @param sx1 source image bounds
* @param sy1 source image bounds
* @param sx2 source image bounds
* @param sy2 source image bounds
* @param bgColor background color
* @param observer for updates if image still incomplete
* @return true if successful
*/
public boolean drawImage(
Image image,
int dx1,
int dy1,
int dx2,
int dy2,
int sx1,
int sy1,
int sx2,
int sy2,
Color bgColor,
ImageObserver observer) {
try {
int srcX = Math.min(sx1, sx2);
int srcY = Math.min(sy1, sy2);
int srcWidth = Math.abs(sx2 - sx1);
int srcHeight = Math.abs(sy2 - sy1);
int width = Math.abs(dx2 - dx1);
int height = Math.abs(dy2 - dy1);
if ((srcX != 0)
|| (srcY != 0)
|| (srcWidth != image.getWidth(observer))
|| (srcHeight != image.getHeight(observer))) {
// crop the source image
ImageFilter crop = new CropImageFilter(srcX, srcY, srcWidth, srcHeight);
image =
Toolkit.getDefaultToolkit()
.createImage(new FilteredImageSource(image.getSource(), crop));
MediaTracker mediaTracker = new MediaTracker(new Panel());
mediaTracker.addImage(image, 0);
try {
mediaTracker.waitForAll();
} catch (InterruptedException e) {
handleException(e);
}
}
boolean flipHorizontal = (dx2 < dx1) ^ (sx2 < sx1); // src flipped
// and not dest
// flipped or
// vice versa
boolean flipVertical = (dy2 < dy1) ^ (sy2 < sy1); // <=> source
// flipped XOR
// dest flipped
double tx = (flipHorizontal) ? (double) dx2 : (double) dx1;
double ty = (flipVertical) ? (double) dy2 : (double) dy1;
double sx = (double) width / srcWidth;
sx = flipHorizontal ? -1 * sx : sx;
double sy = (double) height / srcHeight;
sy = flipVertical ? -1 * sy : sy;
writeImage(
ImageUtilities.createRenderedImage(image, observer, bgColor),
new AffineTransform(sx, 0, 0, sy, tx, ty),
bgColor);
return true;
} catch (IOException e) {
handleException(e);
return false;
}
}
public boolean drawImage(Image image, AffineTransform xform, ImageObserver observer) {
drawRenderedImage(ImageUtilities.createRenderedImage(image, observer, null), xform);
return true;
}