Hi all!
While playing with colors for pairtaghighlighter plugin, I saw that
Scintilla is using BGR instead of normal RGB. I found existing code in
Geany source to use it in my plugin.
utils_invert_color from utils.c deals with replacing blue with red, but
with mistake.
Below are results of my testing with random color:
11111111 11001100 10011001 - input color
10011001 11001100 11111111 - result of my function (rgb2bgr)
00000000 00110011 01100110 - result of utils_invert_color
A little source file is attached.
If it is really mistake (maybe I don't know something), I will do commit
and pull request.
Any comments about this?
--
Best regards,
Volodymyr Kononenko
http://kononenko.ws
#include <stdio.h>
int rgb2bgr(int color)
{
int r, g, b;
r = color >> 16;
g = (0x00ff00 & color) >> 8;
b = (0x0000ff & color);
color = (r | (g << 8) | (b << 16));
return color;
}
int utils_invert_color(int color)
{
int r, g, b;
r = 0xffffff - color;
g = 0xffffff - (color >> 8);
b = 0xffffff - (color >> 16);
return (r | (g << 8) | (b << 16));
}
void print_bin(int n)
{
int i;
for (i=1; i<=24; i++)
{
(n & (1<<23)) == 0x800000 ? printf("1") : printf("0");
if((0 == i%8) && (0 != i))
printf(" ");
n = n << 1;
}
printf("\n");
}
int main(void)
{
int color = 0xffcc99;
print_bin(color);
print_bin(rgb2bgr(color));
print_bin(utils_invert_color(color));
}
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