mirror of
https://github.com/reactos/reactos.git
synced 2024-12-28 18:15:11 +00:00
78 lines
1.7 KiB
C
78 lines
1.7 KiB
C
/*
|
|
* COPYRIGHT: See COPYING in the top level directory
|
|
* PROJECT: ReactOS kernel
|
|
* PURPOSE: Functions for creation and destruction of DCs
|
|
* FILE: win32ss/gdi/ntgdi/dcattr.c
|
|
* PROGRAMER: Timo Kreuzer (timo.kreuzer@rectos.org)
|
|
*/
|
|
|
|
#include <win32k.h>
|
|
|
|
#define NDEBUG
|
|
#include <debug.h>
|
|
|
|
#define GDIDCATTRFREE 8
|
|
|
|
typedef struct _GDI_DC_ATTR_FREELIST
|
|
{
|
|
LIST_ENTRY Entry;
|
|
DWORD nEntries;
|
|
PVOID AttrList[GDIDCATTRFREE];
|
|
} GDI_DC_ATTR_FREELIST, *PGDI_DC_ATTR_FREELIST;
|
|
|
|
typedef struct _GDI_DC_ATTR_ENTRY
|
|
{
|
|
DC_ATTR Attr[GDIDCATTRFREE];
|
|
} GDI_DC_ATTR_ENTRY, *PGDI_DC_ATTR_ENTRY;
|
|
|
|
|
|
BOOL
|
|
NTAPI
|
|
DC_bAllocDcAttr(PDC pdc)
|
|
{
|
|
PPROCESSINFO ppi;
|
|
PDC_ATTR pdcattr;
|
|
|
|
ppi = PsGetCurrentProcessWin32Process();
|
|
ASSERT(ppi);
|
|
|
|
pdcattr = GdiPoolAllocate(ppi->pPoolDcAttr);
|
|
if (!pdcattr)
|
|
{
|
|
DPRINT1("Could not allocate DC attr\n");
|
|
return FALSE;
|
|
}
|
|
|
|
/* Copy the content from the kernel mode dc attr */
|
|
pdc->pdcattr = pdcattr;
|
|
*pdc->pdcattr = pdc->dcattr;
|
|
|
|
/* Set the object attribute in the handle table */
|
|
GDIOBJ_vSetObjectAttr(&pdc->BaseObject, pdcattr);
|
|
|
|
DPRINT("DC_AllocDcAttr: pdc=%p, pdc->pdcattr=%p\n", pdc, pdc->pdcattr);
|
|
return TRUE;
|
|
}
|
|
|
|
VOID
|
|
NTAPI
|
|
DC_vFreeDcAttr(PDC pdc)
|
|
{
|
|
PPROCESSINFO ppi;
|
|
|
|
if (pdc->pdcattr == &pdc->dcattr)
|
|
{
|
|
// Internal DC object!
|
|
return;
|
|
}
|
|
|
|
/* Reset the object attribute in the handle table */
|
|
GDIOBJ_vSetObjectAttr(&pdc->BaseObject, NULL);
|
|
|
|
ppi = PsGetCurrentProcessWin32Process();
|
|
ASSERT(ppi);
|
|
GdiPoolFree(ppi->pPoolDcAttr, pdc->pdcattr);
|
|
|
|
/* Reset to kmode dcattr */
|
|
pdc->pdcattr = &pdc->dcattr;
|
|
}
|