[news.eclipse.platform.swt] Help with Painting !!

[Chhil <aaa@xxxxxxxxxxxxxx>]

Hello,

Please help me overcome this issue with painting a image before placing 
it on the composite.


Region (a) is white and transparent.
Region (b) is black.
The image has 2 colors and is depth is I bit per pixel.

|-------------------|
|        (a)        |
|                   |
|   |---------|     |
|   |         |     |
|   |         |     |
|   |     (b) |     |
|   |         |     |
|   |---------|     |
|                   |
|                   |
|-------------------|
When I place this image on a composite region (a) correctly get the 
color of the composite it lies on.
Now I want to change region (b) to have the foreground color of the 
composite.

Problem 1.
==========
 I cannot chage the color of region (b) to the forground color of the 
composite it is on.
Problem 2
==========
If the fore ground color of the composite is white, changing the color 
of region (b) to white will make it transparent too as the transparent 
color is white.


Code
====
Here is what I do , if I find a black pixel I change it to white which 
makes the complete image transparent.
If I use any value other than FFFFFF region (b)becomes black.

I am clueless... HELP!!!

for(int i=0; i<img_data.width; i++) {
   for(int j=0; j<img_data.height; j++) {
     RGB rgb = img_data.palette.getRGB(img_data.getPixel(i, j));
     int threshold = 0;

     if(rgb.red == threshold && rgb.green == threshold && rgb.blue == 
threshold)
        img_data.setPixel(i, j, 0xFFFFFF);

   }
 }



-Chhil
p.s. I have posted a similar post earlier.