[gimp] app: don't draw guides which are out of canvas

[Michael Natterer <mitch src gnome org>]

commit 2a289a75f4175a5af4ad173052f616e541132fe5
Author: Michael Natterer <mitch gimp org>
Date:   Sun May 2 16:01:40 2010 +0200

    app: don't draw guides which are out of canvas

 app/display/gimpdisplayshell-draw.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/app/display/gimpdisplayshell-draw.c b/app/display/gimpdisplayshell-draw.c
index 41ce432..3245a2a 100644
--- a/app/display/gimpdisplayshell-draw.c
+++ b/app/display/gimpdisplayshell-draw.c
@@ -160,6 +160,8 @@ gimp_display_shell_draw_guide (GimpDisplayShell   *shell,
       gimp_display_shell_transform_xy (shell, 0, position, &x, &y, FALSE);
       if (area && (y < area->y || y >= area->y + area->height))
         return;
+      if (y < y1 || y >= y2)
+        return;
       y1 = y2 = y;
       break;
 
@@ -167,6 +169,8 @@ gimp_display_shell_draw_guide (GimpDisplayShell   *shell,
       gimp_display_shell_transform_xy (shell, position, 0, &x, &y, FALSE);
       if (area && (x < area->x || x >= area->x + area->width))
         return;
+      if (x < x1 || x >= x2)
+        return;
       x1 = x2 = x;
       break;