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