graphics/x11drv/clipping.c

   1 /*
   2  * DC clipping functions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6
   7 #include <stdio.h>
   8 #include "dc.h"
   9 #include "x11drv.h"
  10 #include "region.h"
  11 #include "stddebug.h"
  12 #include "debug.h"
  13
  14 /***********************************************************************
  15  *           X11DRV_SetDeviceClipping
  16  */
  17 void X11DRV_SetDeviceClipping( DC * dc )
  18 {
  19     RGNOBJ *obj = (RGNOBJ *) GDI_GetObjPtr(dc->w.hGCClipRgn, REGION_MAGIC);
  20     if (!obj)
  21     {
  22         fprintf( stderr, "X11DRV_SetDeviceClipping: Rgn is 0. Please report this.\n");
  23         exit(1);
  24     }
  25     if (obj->xrgn)
  26     {
  27         XSetRegion( display, dc->u.x.gc, obj->xrgn );
  28         XSetClipOrigin( display, dc->u.x.gc, dc->w.DCOrgX, dc->w.DCOrgY );
  29     }
  30     else  /* Clip everything */
  31     {
  32         XSetClipRectangles( display, dc->u.x.gc, 0, 0, NULL, 0, 0 );
  33     }
  34 }