notgne2/tuxpaint-pencil-sharpener
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XOR that shows up on dark grey

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This commit is contained in:
Albert Cahalan 2005-01-09 03:01:44 +00:00
parent 01acda723a
commit 6360e4fec9
1 changed files with 12 additions and 4 deletions
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16
src/tuxpaint.c
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@ -9346,8 +9346,10 @@ static void line_xor(int x1, int y1, int x2, int y2)
num_drawn++; num_drawn++;
if (num_drawn < 10 || dont_do_xor == 0) if (num_drawn < 10 || dont_do_xor == 0)
{ {
// must show up on black, white, 0x7f grey, and 0x80 grey
// must be exactly 100% perfect reversable
clipped_putpixel(screen, x1 + 96, y, clipped_putpixel(screen, x1 + 96, y,
0xFFFFFFFF - getpixel(screen, x1 + 96, y)); 0x80808080 ^ getpixel(screen, x1 + 96, y));
} }
} }
@ -9364,8 +9366,10 @@ static void line_xor(int x1, int y1, int x2, int y2)
if (num_drawn < 10 || dont_do_xor == 0) if (num_drawn < 10 || dont_do_xor == 0)
{ {
// must show up on black, white, 0x7f grey, and 0x80 grey
// must be exactly 100% perfect reversable
clipped_putpixel(screen, x1 + 96, y, clipped_putpixel(screen, x1 + 96, y,
0xFFFFFFFF - getpixel(screen, x1 + 96, y)); 0x80808080 ^ getpixel(screen, x1 + 96, y));
} }
} }
} }
@ -9377,8 +9381,10 @@ static void line_xor(int x1, int y1, int x2, int y2)
if (num_drawn < 10 || dont_do_xor == 0) if (num_drawn < 10 || dont_do_xor == 0)
{ {
// must show up on black, white, 0x7f grey, and 0x80 grey
// must be exactly 100% perfect reversable
clipped_putpixel(screen, x1 + 96, y, clipped_putpixel(screen, x1 + 96, y,
0xFFFFFFFF - getpixel(screen, x1 + 96, y)); 0x80808080 ^ getpixel(screen, x1 + 96, y));
} }
} }
} }
@ -13711,7 +13717,9 @@ static void stamp_xor(int x, int y)
sy = y + yy - stamp_outline_h/2; sy = y + yy - stamp_outline_h/2;
if (stiple[sx%STIPLE_W + sy%STIPLE_H * STIPLE_W] != '8') if (stiple[sx%STIPLE_W + sy%STIPLE_H * STIPLE_W] != '8')
continue; continue;
clipped_putpixel(screen, sx, sy, 0xFFFFFFFF - getpixel(screen, sx, sy)); // must show up on black, white, 0x7f grey, and 0x80 grey
// must be exactly 100% perfect reversable
clipped_putpixel(screen, sx, sy, 0x80808080 ^ getpixel(screen, sx, sy));
} }
} }
SDL_UnlockSurface(screen); SDL_UnlockSurface(screen);