From 22acf4b96ad36321bd05e54f90b9788f81e57837 Mon Sep 17 00:00:00 2001
From: pnenzi <pnenzi>
Date: Sun, 15 Apr 2001 19:32:25 +0000
Subject: [PATCH] Simple changes from patches to spice 3f4 (G. Roehrich) that
 restored the drawing of lines and boxes in plot windows  in truecolor
 displays.

---
 src/frontend/plotting/graf.c | 12 ++++++++----
 src/frontend/plotting/x11.c  |  5 ++++-
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/src/frontend/plotting/graf.c b/src/frontend/plotting/graf.c
index 2513d2779..786b8b09c 100644
--- a/src/frontend/plotting/graf.c
+++ b/src/frontend/plotting/graf.c
@@ -296,9 +296,11 @@ gr_point(struct dvec *dv,
 		if (*tics == (double) np) {
 		    Text("x", (int) (tox - currentgraph->fontwidth / 2),
 			(int) (toy - currentgraph->fontheight / 2));
-		    SaveText(currentgraph, "x",
+		/* gr_redraw will redraw this w/o our having to save it
+                   Guenther Roehrich 22-Jan-99 */
+		/*    SaveText(currentgraph, "x",
 			(int) (tox - currentgraph->fontwidth / 2),
-			(int) (toy - currentgraph->fontheight / 2));
+			(int) (toy - currentgraph->fontheight / 2)); */
 		    break;
 		}
 	    }
@@ -308,9 +310,11 @@ gr_point(struct dvec *dv,
 	    /* Draw an 'x' */
 	    Text("x", (int) (tox - currentgraph->fontwidth / 2),
 		(int) (toy - currentgraph->fontheight / 2));
-	    SaveText(currentgraph, "x",
+	 /* gr_redraw will redraw this w/o our having to save it
+                  Guenther Roehrich 22-Jan-99 */ 
+	  /*  SaveText(currentgraph, "x",
 		(int) (tox - currentgraph->fontwidth / 2),
-		(int) (toy - currentgraph->fontheight / 2));
+		(int) (toy - currentgraph->fontheight / 2)); */
 	}
         break;
       case PLOT_COMB:
diff --git a/src/frontend/plotting/x11.c b/src/frontend/plotting/x11.c
index 95613e3ed..9fce9606b 100644
--- a/src/frontend/plotting/x11.c
+++ b/src/frontend/plotting/x11.c
@@ -155,7 +155,10 @@ X11_Init(void)
 	/* "invert" works better than "xor" for B&W */
 
 	/* xor gc should be a function of the pixels that are written on */
-	gcvalues.function = GXxor;
+	/* gcvalues.function = GXxor; */
+	/* this patch makes lines visible on true color displays
+        Guenther Roehrich 22-Jan-99 */
+ 	gcvalues.function = GXinvert;
 	gcvalues.line_width = 1;
 	gcvalues.foreground = 1;
 	gcvalues.background = 0;