diff options
Diffstat (limited to 'desktop')
-rw-r--r-- | desktop/plot_style.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/desktop/plot_style.h b/desktop/plot_style.h index 71243a9a9..45813d40d 100644 --- a/desktop/plot_style.h +++ b/desktop/plot_style.h @@ -75,9 +75,21 @@ ((c0 & 0x00ff00) * ( p)) ) >> 8) & 0x00ff00)) /* get a bitmap pixel (image/bitmap.h) into a plot colour */ -#define pixel_to_colour(b) \ +#define pixel_to_colour(b) \ b[0] | (b[1] << 8) | (b[2] << 16) | (b[3] << 24) +/* Get the red channel from a colour */ +#define red_from_colour(c) \ + ((c ) & 0xff) + +/* Get the green channel from a colour */ +#define green_from_colour(c) \ + ((c >> 8) & 0xff) + +/* Get the blue channel from a colour */ +#define blue_from_colour(c) \ + ((c >> 16) & 0xff) + /** * Colour type: XBGR */ |