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gdiplus: Implement tiling wrap modes.

This commit is contained in:
Vincent Povirk 2011-03-09 18:04:52 -06:00 committed by Alexandre Julliard
parent d891a8c16c
commit 5488ea1468
1 changed files with 31 additions and 8 deletions
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39
dlls/gdiplus/graphics.c
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@ -481,17 +481,40 @@ static void get_bitmap_sample_size(InterpolationMode interpolation, WrapMode wra
static ARGB sample_bitmap_pixel(GDIPCONST GpRect *src_rect, LPBYTE bits, UINT width,
UINT height, INT x, INT y, GDIPCONST GpImageAttributes *attributes)
{
static int fixme[4];
switch (attributes->wrap)
if (attributes->wrap == WrapModeClamp)
{
default:
if (!fixme[attributes->wrap]++)
FIXME("not implemented for wrap mode %i\n", attributes->wrap);
case WrapModeClamp:
if (x < 0 || y < 0 || x >= width || y >= height)
return attributes->outside_color;
break;
}
else
{
/* Tiling. Make sure co-ordinates are positive as it simplifies the math. */
if (x < 0)
x = width*2 + x % (width * 2);
if (y < 0)
y = height*2 + y % (height * 2);
if ((attributes->wrap & 1) == 1)
{
/* Flip X */
if ((x / width) % 2 == 0)
x = x % width;
else
x = width - 1 - x % width;
}
else
x = x % width;
if ((attributes->wrap & 2) == 2)
{
/* Flip Y */
if ((y / height) % 2 == 0)
y = y % height;
else
y = height - 1 - y % height;
}
else
y = y % height;
}
if (x < src_rect->X || y < src_rect->Y || x >= src_rect->X + src_rect->Width || y >= src_rect->Y + src_rect->Height)