reactos/dll/win32/gdi32/objects/region.c

   1 #include "precomp.h"
   2
   3
   4 /*
   5  * @implemented
   6  */
   7 int STDCALL
   8 SelectClipRgn(
   9         HDC     hdc,
  10         HRGN    hrgn
  11 )
  12 {
  13     return ExtSelectClipRgn(hdc, hrgn, RGN_COPY);
  14 }
  15
  16
  17 /*
  18  * @implemented
  19  */
  20 int
  21 STDCALL
  22 GetClipRgn(
  23         HDC     hdc,
  24         HRGN    hrgn
  25         )
  26 {
  27     return NtGdiGetRandomRgn(hdc, hrgn, 1);
  28 }
  29
  30
  31 HRGN
  32 WINAPI
  33 CreatePolygonRgn( const POINT * lppt, int cPoints, int fnPolyFillMode)
  34 {
  35     return (HRGN) NtGdiPolyPolyDraw( (HDC) fnPolyFillMode, (PPOINT) lppt, (PULONG) &cPoints, 1, GdiPolyPolyRgn);
  36 }
  37
  38
  39 HRGN
  40 WINAPI
  41 CreatePolyPolygonRgn( const POINT* lppt,
  42                       const INT* lpPolyCounts,
  43                       int nCount,
  44                       int fnPolyFillMode)
  45 {
  46     return (HRGN) NtGdiPolyPolyDraw(  (HDC) fnPolyFillMode, (PPOINT) lppt, (PULONG) lpPolyCounts, (ULONG) nCount, GdiPolyPolyRgn );
  47 }
  48
  49 HRGN
  50 WINAPI
  51 CreateEllipticRgnIndirect(
  52    const RECT *prc
  53 )
  54 {
  55     /* Notes if prc is NULL it will crash on All Windows NT I checked 2000/XP/VISTA */
  56     return NtGdiCreateEllipticRgn(prc->left, prc->top, prc->right, prc->bottom);
  57
  58 }
  59
  60 HRGN
  61 WINAPI
  62 CreateRectRgn(int x1, int y1, int x2,int y2)
  63 {
  64     /* FIXME Some part need be done in user mode */
  65     return NtGdiCreateRectRgn(x1,y1,x2,y2);
  66 }
  67
  68
  69 HRGN
  70 WINAPI
  71 CreateRectRgnIndirect(
  72     const RECT *prc
  73 )
  74 {
  75     /* Notes if prc is NULL it will crash on All Windows NT I checked 2000/XP/VISTA */
  76     return CreateRectRgn(prc->left, prc->top, prc->right, prc->bottom);
  77
  78 }
  79
  80 /*
  81  * I thought it was okay to have this in DeleteObject but~ Speed. (jt)
  82  */
  83 BOOL
  84 FASTCALL
  85 DeleteRegion( HRGN hRgn )
  86 {
  87 #if 0
  88   PREGION_ATTR Rgn_Attr;
  89
  90   if ((GdiGetHandleUserData((HGDIOBJ) hRgn, (PVOID) &Rgn_Attr)) &&
  91       ( Rgn_Attr != NULL ))
  92   {
  93      PTEB pTeb = NtCurrentTeb();
  94      if (pTeb->Win32ThreadInfo != NULL)
  95      {
  96         if ((pTeb->GdiTebBatch.Offset + sizeof(GDIBSOBJECT)) <= GDIBATCHBUFSIZE)
  97         {
  98            PGDIBSOBJECT pgO = (PGDIBSOBJECT)(&pTeb->GdiTebBatch.Buffer[0] +
  99                                                       pTeb->GdiTebBatch.Offset);
 100            pgO->gbHdr.Cmd = GdiBCDelRgn;
 101            pgO->gbHdr.Size = sizeof(GDIBSOBJECT);
 102            pgO->hgdiobj = (HGDIOBJ)hRgn;
 103
 104            pTeb->GdiTebBatch.Offset += sizeof(GDIBSOBJECT);
 105            pTeb->GdiBatchCount++;
 106            if (pTeb->GdiBatchCount >= GDI_BatchLimit) NtGdiFlush();
 107            return TRUE;
 108         }
 109      }
 110   }
 111 #endif
 112   return NtGdiDeleteObjectApp((HGDIOBJ) hRgn);
 113 }
 114
 115 /*
 116  * @implemented
 117  */
 118 HRGN
 119 STDCALL
 120 ExtCreateRegion(
 121         CONST XFORM *   lpXform,
 122         DWORD           nCount,
 123         CONST RGNDATA * lpRgnData
 124         )
 125 {
 126    if (lpRgnData)
 127    {
 128      if ((!lpXform) && (lpRgnData->rdh.nCount == 1))
 129      {
 130          PRECT pRect = (PRECT)&lpRgnData->Buffer[0];
 131          return CreateRectRgn(pRect->left, pRect->top, pRect->right, pRect->bottom);
 132      }
 133      return NtGdiExtCreateRegion((LPXFORM) lpXform, nCount,(LPRGNDATA) lpRgnData);
 134    }
 135    SetLastError(ERROR_INVALID_PARAMETER);
 136    return NULL;
 137 }
 138