| Image with SWT.IMAGE_GRAY style [message #456354] |
Tue, 31 May 2005 22:38  |
 Connie Lam
Messages: 24
Registered: July 2009 |
Junior Member |
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Hi,
Given an image, I want to be able to do the following:
1. Display the image with transparent background (RGB(0, 255, 255) in my
case).
2. Display the image as being grayed-out and, at the same time, have
transparent background.
I'm able to do this on a GIF and 16 color BMP using the following code:
InputStream inputStream =
test.getClass().getResourceAsStream("..\\..\\icons\\img.bmp ");
ImageData imgData = new ImageData(inputStream);
imgData.transparentPixel = imgData.palette.getPixel(new RGB(0, 255, 255));
final Image image = new Image(display, imgData);
final Image disabledImage = new Image(display, image, SWT.IMAGE_GRAY);
shell.addPaintListener(new PaintListener() {
public void paintControl(PaintEvent event) {
GC gc = event.gc;
gc.drawImage(image, 0, 0);
gc.drawImage(disabledImage, 50, 0);
}
});
However, I can only get #1 working when I tried the same code on a 24-bit
BMP.
(the 24-bit BMP has the same background color RGB(0, 255, 255) as the
previous
2 images). The grayed-out image does not have a transparent background -
it
has a light gray background instead.
Is this a bug? Is there a solution/workaround for me to fix the problem?
Thanks for your help!
Connie
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