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gdiplus: Move bitmap interpolation into a separate function.

This commit is contained in:
Vincent Povirk 2011-03-10 10:40:39 -06:00 committed by Alexandre Julliard
parent 33807ac093
commit 51cf90d8ca
1 changed files with 19 additions and 5 deletions
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24
dlls/gdiplus/graphics.c
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@ -526,6 +526,24 @@ static ARGB sample_bitmap_pixel(GDIPCONST GpRect *src_rect, LPBYTE bits, UINT wi
return ((DWORD*)(bits))[(x - src_rect->X) + (y - src_rect->Y) * src_rect->Width];
}
static ARGB resample_bitmap_pixel(GDIPCONST GpRect *src_rect, LPBYTE bits, UINT width,
UINT height, GpPointF *point, GDIPCONST GpImageAttributes *attributes,
InterpolationMode interpolation)
{
static int fixme;
switch (interpolation)
{
default:
if (!fixme++)
FIXME("Unimplemented interpolation %i\n", interpolation);
/* fall-through */
case InterpolationModeNearestNeighbor:
return sample_bitmap_pixel(src_rect, bits, width, height,
roundr(point->X), roundr(point->Y), attributes);
}
}
static void brush_fill_path(GpGraphics *graphics, GpBrush* brush)
{
switch (brush->bt)
@ -2528,19 +2546,15 @@ GpStatus WINGDIPAPI GdipDrawImagePointsRect(GpGraphics *graphics, GpImage *image
for (y=dst_area.top; y<dst_area.bottom; y++)
{
GpPointF src_pointf;
INT src_x, src_y;
ARGB *dst_color;
src_pointf.X = dst_to_src_points[0].X + x * x_dx + y * y_dx;
src_pointf.Y = dst_to_src_points[0].Y + x * x_dy + y * y_dy;
src_x = roundr(src_pointf.X);
src_y = roundr(src_pointf.Y);
dst_color = (ARGB*)(dst_data + dst_stride * (y - dst_area.top) + sizeof(ARGB) * (x - dst_area.left));
if (src_pointf.X >= srcx && src_pointf.X < srcx + srcwidth && src_pointf.Y >= srcy && src_pointf.Y < srcy+srcheight)
*dst_color = sample_bitmap_pixel(&src_area, src_data, bitmap->width, bitmap->height, src_x, src_y, imageAttributes);
*dst_color = resample_bitmap_pixel(&src_area, src_data, bitmap->width, bitmap->height, &src_pointf, imageAttributes, interpolation);
else
*dst_color = 0;
}