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gdi32: Allow a caller to build_rle_bitmap to not request the clip region.

This commit is contained in:
Huw Davies 2011-10-17 15:46:04 +01:00 committed by Alexandre Julliard
parent 8f4fab2483
commit 2127e9444d
1 changed files with 13 additions and 8 deletions
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21
dlls/gdi32/dib.c
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@ -252,14 +252,19 @@ static BOOL build_rle_bitmap( const BITMAPINFO *info, struct gdi_image_bits *bit
BYTE skip, num, data;
BYTE *out_bits, *in_bits = bits->ptr;
*clip = NULL;
if (clip) *clip = NULL;
assert( info->bmiHeader.biBitCount == 4 || info->bmiHeader.biBitCount == 8 );
out_bits = HeapAlloc( GetProcessHeap(), 0, get_dib_image_size( info ) );
*clip = CreateRectRgn( 0, 0, 0, 0 );
run = CreateRectRgn( 0, 0, 0, 0 );
if (!out_bits || !*clip || !run) goto fail;
out_bits = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, get_dib_image_size( info ) );
if (!out_bits) goto fail;
if (clip)
{
*clip = CreateRectRgn( 0, 0, 0, 0 );
run = CreateRectRgn( 0, 0, 0, 0 );
if (!*clip || !run) goto fail;
}
x = left = right = 0;
y = height - 1;
@ -299,7 +304,7 @@ static BOOL build_rle_bitmap( const BITMAPINFO *info, struct gdi_image_bits *bit
{
if (data < 3)
{
if(left != right)
if(left != right && clip)
{
SetRectRgn( run, left, y, right, y + 1 );
CombineRgn( *clip, run, *clip, RGN_OR );
@ -365,7 +370,7 @@ static BOOL build_rle_bitmap( const BITMAPINFO *info, struct gdi_image_bits *bit
}
done:
DeleteObject( run );
if (run) DeleteObject( run );
if (bits->free) bits->free( bits );
bits->ptr = out_bits;
@ -376,7 +381,7 @@ done:
fail:
if (run) DeleteObject( run );
if (*clip) DeleteObject( *clip );
if (clip && *clip) DeleteObject( *clip );
HeapFree( GetProcessHeap(), 0, out_bits );
return FALSE;
}