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Added support for doing SetBitmapBits on a DIB section.

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This commit is contained in:
Alexandre Julliard 2005-11-29 10:45:40 +01:00
parent 02b655773f
commit 02d814852d
1 changed files with 25 additions and 0 deletions
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25
dlls/gdi/bitmap.c
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@ -381,6 +381,31 @@ LONG WINAPI SetBitmapBits(
count = -count;
}
if (bmp->dib) /* simply copy the bits into the DIB */
{
DIBSECTION *dib = bmp->dib;
char *dest = dib->dsBm.bmBits;
DWORD max = dib->dsBm.bmWidthBytes * dib->dsBm.bmHeight;
if (count > max) count = max;
ret = count;
if (bmp->dib->dsBmih.biHeight >= 0) /* not top-down, need to flip contents vertically */
{
dest += dib->dsBm.bmWidthBytes * dib->dsBm.bmHeight;
while (count > 0)
{
dest -= dib->dsBm.bmWidthBytes;
memcpy( dest, bits, min( count, dib->dsBm.bmWidthBytes ) );
bits = (char *)bits + dib->dsBm.bmWidthBytes;
count -= dib->dsBm.bmWidthBytes;
}
}
else memcpy( dest, bits, count );
GDI_ReleaseObj( hbitmap );
return ret;
}
/* Only get entire lines */
height = count / bmp->bitmap.bmWidthBytes;
if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;