114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
/*
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* GDI functions
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*
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* Copyright 1993 Alexandre Julliard
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* Copyright 2021 Jacek Caban for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#include "windef.h"
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#include "winbase.h"
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#include "ntgdi.h"
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#include "winternl.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(gdi);
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static GDI_SHARED_MEMORY *get_gdi_shared(void)
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{
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#ifndef _WIN64
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if (NtCurrentTeb()->GdiBatchCount)
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{
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TEB64 *teb64 = (TEB64 *)(UINT_PTR)NtCurrentTeb()->GdiBatchCount;
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PEB64 *peb64 = (PEB64 *)(UINT_PTR)teb64->Peb;
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return (GDI_SHARED_MEMORY *)(UINT_PTR)peb64->GdiSharedHandleTable;
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}
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#endif
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return (GDI_SHARED_MEMORY *)NtCurrentTeb()->Peb->GdiSharedHandleTable;
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}
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static inline GDI_HANDLE_ENTRY *handle_entry( HGDIOBJ handle )
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{
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GDI_SHARED_MEMORY *gdi_shared = get_gdi_shared();
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unsigned int idx = LOWORD(handle);
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if (idx < GDI_MAX_HANDLE_COUNT && gdi_shared->Handles[idx].Type)
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{
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if (!HIWORD( handle ) || HIWORD( handle ) == gdi_shared->Handles[idx].Unique)
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return &gdi_shared->Handles[idx];
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}
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if (handle) WARN( "invalid handle %p\n", handle );
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return NULL;
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}
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static WORD get_object_type( HGDIOBJ obj )
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{
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GDI_HANDLE_ENTRY *entry = handle_entry( obj );
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return entry ? entry->Type : 0;
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}
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/***********************************************************************
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* GetObjectType (GDI32.@)
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*/
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DWORD WINAPI GetObjectType( HGDIOBJ handle )
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{
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DWORD result = get_object_type( handle );
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TRACE("%p -> %u\n", handle, result );
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if (!result) SetLastError( ERROR_INVALID_HANDLE );
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return result;
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}
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/***********************************************************************
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* SelectObject (GDI32.@)
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*
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* Select a Gdi object into a device context.
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*/
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HGDIOBJ WINAPI SelectObject( HDC hdc, HGDIOBJ obj )
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{
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HGDIOBJ ret;
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TRACE( "(%p,%p)\n", hdc, obj );
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switch (get_object_type( obj ))
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{
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case OBJ_PEN:
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case OBJ_EXTPEN:
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ret = NtGdiSelectPen( hdc, obj );
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break;
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case OBJ_BRUSH:
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ret = NtGdiSelectBrush( hdc, obj );
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break;
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case OBJ_FONT:
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ret = NtGdiSelectFont( hdc, obj );
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break;
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case OBJ_BITMAP:
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ret = NtGdiSelectBitmap( hdc, obj );
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break;
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case OBJ_REGION:
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ret = ULongToHandle(SelectClipRgn( hdc, obj ));
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break;
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default:
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return 0;
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}
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if (!ret) SetLastError( ERROR_INVALID_HANDLE );
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return ret;
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}
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