ps output for X11

ChangeLog

@@ -5,6 +5,7 @@
  * subckt.c: .global bug  by R. Larice
    various files: patches by Robert (Neval, Nintegrate) from Jan 3 2010 and 
    10 patches from Jan 16, 2010
+ * com_hardcopy.c: switching graphics context correctly for postscript output
 
 2010-01-16 Dietmar Warning
  * tests/transmission: Only few tests should be easier, more examples under 

src/frontend/com_hardcopy.c

@@ -108,10 +108,17 @@ com_hardcopy(wordlist *wl)
 	            DevSwitch(NULL);
 	            return;
 	        }
+			/* save current graphics context */
+			PushGraphContext(currentgraph);
+			currentgraph = tempgraph;
+			/* some operations in gr_resize, gr_redraw, and DevSwitch 
+			   will be done on currentgraph, not only on tempgraph */
 	        gr_resize(tempgraph);
 	        gr_redraw(tempgraph);
+	        DevSwitch(NULL);	
+			/* retrieve current graphics context */
+			PopGraphContext();
 	        DestroyGraph(tempgraph->graphid);
-	        DevSwitch(NULL);
 	        foundit = 1;
 	    }
     }