wine/dlls/gdiplus/region.c

119 lines
3.3 KiB
C

/*
* Copyright (C) 2008 Google (Lei Zhang)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "objbase.h"
#include "gdiplus.h"
#include "gdiplus_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(gdiplus);
/**********************************************************
*
* Data returned by GdipGetRegionData (for rectangle based regions)
* looks something like this:
*
* struct region_data_header
* {
* DWORD size; size in bytes of the data - 8.
* DWORD magic1; probably a checksum.
* DWORD magic2; always seems to be 0xdbc01001 - version?
* DWORD num_ops; number of combining ops * 2
* };
*
* Then follows a sequence of combining ops and RECTFs.
*
* Combining ops are just stored as their CombineMode value.
*
* Each RECTF is preceded by the DWORD 0x10000000. An empty rect is
* stored as 0x10000002 (with no following RECTF) and an infinite rect
* is stored as 0x10000003 (again with no following RECTF).
*
* The combining ops are stored in the reverse order to the RECTFs and in the
* reverse order to which the region was constructed.
*
* When two or more complex regions (ie those with more than one rect)
* are combined, the combining op for the two regions comes first,
* then the combining ops for the rects in region 1, followed by the
* rects for region 1, then follows the combining ops for region 2 and
* finally region 2's rects. Presumably you're supposed to use the
* 0x10000000 rect header to find the end of the op list (the count of
* the rects in each region is not stored).
*
* When a simple region (1 rect) is combined, it's treated as if a single rect
* is being combined.
*
*/
GpStatus WINGDIPAPI GdipCreateRegion(GpRegion **region)
{
FIXME("(%p): stub\n", region);
*region = NULL;
return NotImplemented;
}
GpStatus WINGDIPAPI GdipCreateRegionPath(GpPath *path, GpRegion **region)
{
FIXME("(%p, %p): stub\n", path, region);
*region = NULL;
return NotImplemented;
}
GpStatus WINGDIPAPI GdipDeleteRegion(GpRegion *region)
{
FIXME("(%p): stub\n", region);
return NotImplemented;
}
GpStatus WINGDIPAPI GdipGetRegionHRgn(GpRegion *region, GpGraphics *graphics, HRGN *hrgn)
{
FIXME("(%p, %p, %p): stub\n", region, graphics, hrgn);
*hrgn = NULL;
return NotImplemented;
}
GpStatus WINGDIPAPI GdipSetEmpty(GpRegion *region)
{
static int calls;
if(!(calls++))
FIXME("not implemented\n");
return NotImplemented;
}
GpStatus WINGDIPAPI GdipSetInfinite(GpRegion *region)
{
static int calls;
if(!(calls++))
FIXME("not implemented\n");
return NotImplemented;
}