gdi32: Add null driver entry points for the clipping functions.

dlls/gdi32/driver.c

@@ -408,6 +408,10 @@ static BOOL CDECL nulldrv_RoundRect( PHYSDEV dev, INT left, INT top, INT right,
     return TRUE;
 }
 
+static void CDECL nulldrv_SetDeviceClipping( PHYSDEV dev, HRGN vis_rgn, HRGN clip_rgn )
+{
+}
+
 static COLORREF CDECL nulldrv_SetPixel( PHYSDEV dev, INT x, INT y, COLORREF color )
 {
     return color;
@@ -450,11 +454,11 @@ const DC_FUNCTIONS null_driver =
     NULL,                               /* pEndPath */
     NULL,                               /* pEnumICMProfiles */
     NULL,                               /* pEnumDeviceFonts */
-    NULL,                               /* pExcludeClipRect */
+    nulldrv_ExcludeClipRect,            /* pExcludeClipRect */
     NULL,                               /* pExtDeviceMode */
     NULL,                               /* pExtEscape */
     nulldrv_ExtFloodFill,               /* pExtFloodFill */
-    NULL,                               /* pExtSelectClipRgn */
+    nulldrv_ExtSelectClipRgn,           /* pExtSelectClipRgn */
     NULL,                               /* pExtTextOut */
     NULL,                               /* pFillPath */
     nulldrv_FillRgn,                    /* pFillRgn */
@@ -473,12 +477,12 @@ const DC_FUNCTIONS null_driver =
     NULL,                               /* pGetSystemPaletteEntries */
     NULL,                               /* pGetTextExtentExPoint */
     NULL,                               /* pGetTextMetrics */
-    NULL,                               /* pIntersectClipRect */
+    nulldrv_IntersectClipRect,          /* pIntersectClipRect */
     nulldrv_InvertRgn,                  /* pInvertRgn */
     nulldrv_LineTo,                     /* pLineTo */
     NULL,                               /* pModifyWorldTransform */
     nulldrv_MoveTo,                     /* pMoveTo */
-    NULL,                               /* pOffsetClipRgn */
+    nulldrv_OffsetClipRgn,              /* pOffsetClipRgn */
     NULL,                               /* pOffsetViewportOrg */
     NULL,                               /* pOffsetWindowOrg */
     nulldrv_PaintRgn,                   /* pPaintRgn */
@@ -516,7 +520,7 @@ const DC_FUNCTIONS null_driver =
     NULL,                               /* pSetDIBColorTable */
     NULL,                               /* pSetDIBits */
     NULL,                               /* pSetDIBitsToDevice */
-    NULL,                               /* pSetDeviceClipping */
+    nulldrv_SetDeviceClipping,          /* pSetDeviceClipping */
     NULL,                               /* pSetDeviceGammaRamp */
     NULL,                               /* pSetMapMode */
     NULL,                               /* pSetMapperFlags */

dlls/gdi32/gdi_private.h

@@ -504,14 +504,23 @@ extern BOOL REGION_FrameRgn( HRGN dest, HRGN src, INT x, INT y ) DECLSPEC_HIDDEN
 /* null driver entry points */
 extern BOOL CDECL nulldrv_AngleArc( PHYSDEV dev, INT x, INT y, DWORD radius, FLOAT start, FLOAT sweep ) DECLSPEC_HIDDEN;
 extern BOOL CDECL nulldrv_ArcTo( PHYSDEV dev, INT left, INT top, INT right, INT bottom, INT xstart, INT ystart, INT xend, INT yend ) DECLSPEC_HIDDEN;
+extern INT  CDECL nulldrv_ExcludeClipRect( PHYSDEV dev, INT left, INT top, INT right, INT bottom ) DECLSPEC_HIDDEN;
+extern INT  CDECL nulldrv_ExtSelectClipRgn( PHYSDEV dev, HRGN rgn, INT mode ) DECLSPEC_HIDDEN;
 extern BOOL CDECL nulldrv_FillRgn( PHYSDEV dev, HRGN rgn, HBRUSH brush ) DECLSPEC_HIDDEN;
 extern BOOL CDECL nulldrv_FrameRgn( PHYSDEV dev, HRGN rgn, HBRUSH brush, INT width, INT height ) DECLSPEC_HIDDEN;
+extern INT  CDECL nulldrv_IntersectClipRect( PHYSDEV dev, INT left, INT top, INT right, INT bottom ) DECLSPEC_HIDDEN;
 extern BOOL CDECL nulldrv_InvertRgn( PHYSDEV dev, HRGN rgn ) DECLSPEC_HIDDEN;
+extern INT  CDECL nulldrv_OffsetClipRgn( PHYSDEV dev, INT x, INT y ) DECLSPEC_HIDDEN;
 extern BOOL CDECL nulldrv_PolyBezier( PHYSDEV dev, const POINT *points, DWORD count ) DECLSPEC_HIDDEN;
 extern BOOL CDECL nulldrv_PolyBezierTo( PHYSDEV dev, const POINT *points, DWORD count ) DECLSPEC_HIDDEN;
 extern BOOL CDECL nulldrv_PolyDraw( PHYSDEV dev, const POINT *points, const BYTE *types, DWORD count ) DECLSPEC_HIDDEN;
 extern BOOL CDECL nulldrv_PolylineTo( PHYSDEV dev, const POINT *points, INT count ) DECLSPEC_HIDDEN;
 
+static inline DC *get_nulldrv_dc( PHYSDEV dev )
+{
+    return CONTAINING_RECORD( dev, DC, nulldrv );
+}
+
 /* Undocumented value for DIB's iUsage: Indicates a mono DIB w/o pal entries */
 #define DIB_PAL_MONO 2