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gdi32: Allow SetBitmapBits to set incomplete scanlines.

This commit is contained in:
Huw Davies 2011-08-19 16:26:12 +01:00 committed by Alexandre Julliard
parent bdc3b9c0a9
commit cb82c45b3a
1 changed files with 22 additions and 5 deletions
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27
dlls/gdi32/bitmap.c
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@ -535,6 +535,7 @@ LONG WINAPI SetBitmapBits(
int i, src_stride, dst_stride;
struct bitblt_coords src, dst;
struct gdi_image_bits src_bits;
HRGN clip = NULL;
if (!bits) return 0;
@ -548,17 +549,30 @@ LONG WINAPI SetBitmapBits(
if (bmp->dib) src_stride = get_bitmap_stride( bmp->dib->dsBmih.biWidth, bmp->dib->dsBmih.biBitCount );
else src_stride = get_bitmap_stride( bmp->bitmap.bmWidth, bmp->bitmap.bmBitsPixel );
count = min( count, src_stride * bmp->bitmap.bmHeight );
dst_stride = get_dib_stride( bmp->bitmap.bmWidth, bmp->bitmap.bmBitsPixel );
src.visrect.left = src.x = 0;
src.visrect.top = src.y = 0;
src.visrect.right = src.width = bmp->bitmap.bmWidth;
src.visrect.bottom = src.height = min( count / src_stride, bmp->bitmap.bmHeight );
src.visrect.bottom = src.height = (count + src_stride - 1 ) / src_stride;
dst = src;
/* Only set entire lines */
count = src.height * src_stride;
if (count % src_stride)
{
HRGN last_row;
int extra_pixels = ((count % src_stride) << 3) / bmp->bitmap.bmBitsPixel;
if ((count % src_stride << 3) % bmp->bitmap.bmBitsPixel)
FIXME( "Unhandled partial pixel\n" );
clip = CreateRectRgn( src.visrect.left, src.visrect.top,
src.visrect.right, src.visrect.bottom - 1 );
last_row = CreateRectRgn( src.visrect.left, src.visrect.bottom - 1,
src.visrect.left + extra_pixels, src.visrect.bottom );
CombineRgn( clip, clip, last_row, RGN_OR );
DeleteObject( last_row );
}
TRACE("(%p, %d, %p) %dx%d %d bpp fetched height: %d\n",
hbitmap, count, bits, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
@ -579,8 +593,10 @@ LONG WINAPI SetBitmapBits(
}
src_bits.is_copy = TRUE;
src_bits.free = free_heap_bits;
for (i = 0; i < dst.height; i++)
for (i = 0; i < count / src_stride; i++)
memcpy( (char *)src_bits.ptr + i * dst_stride, (char *)bits + i * src_stride, src_stride );
if (count % src_stride)
memcpy( (char *)src_bits.ptr + i * dst_stride, (char *)bits + i * src_stride, count % src_stride );
}
/* query the color info */
@ -604,10 +620,11 @@ LONG WINAPI SetBitmapBits(
info->bmiHeader.biWidth = bmp->bitmap.bmWidth;
info->bmiHeader.biHeight = -dst.height;
info->bmiHeader.biSizeImage = dst.height * dst_stride;
err = bmp->funcs->pPutImage( NULL, hbitmap, 0, info, &src_bits, &src, &dst, SRCCOPY );
err = bmp->funcs->pPutImage( NULL, hbitmap, clip, info, &src_bits, &src, &dst, SRCCOPY );
}
if (err) count = 0;
if (clip) DeleteObject( clip );
if (src_bits.free) src_bits.free( &src_bits );
GDI_ReleaseObj( hbitmap );
return count;