[gimp] app: fix GimpCanvasBoundary's extents

[Michael Natterer <mitch src gnome org>]

commit 1f8a835e400aae42298c5d36d78e30ac77aef2cd
Author: Michael Natterer <mitch gimp org>
Date:   Wed Sep 29 23:23:14 2010 +0200

    app: fix GimpCanvasBoundary's extents

 app/display/gimpcanvasboundary.c |   16 ++++++++--------
 1 files changed, 8 insertions(+), 8 deletions(-)
---
diff --git a/app/display/gimpcanvasboundary.c b/app/display/gimpcanvasboundary.c
index 1da4219..dc5de47 100644
--- a/app/display/gimpcanvasboundary.c
+++ b/app/display/gimpcanvasboundary.c
@@ -261,17 +261,17 @@ gimp_canvas_boundary_get_extents (GimpCanvasItem   *item,
 
   gimp_canvas_boundary_transform (item, shell, segs);
 
-  x1 = segs[0].x1 - 1;
-  y1 = segs[0].y1 - 1;
-  x2 = x1 + 3;
-  y2 = y1 + 3;
+  x1 = MIN (segs[0].x1, segs[0].x2) - 1;
+  y1 = MIN (segs[0].y1, segs[0].y2) - 1;
+  x2 = MAX (segs[0].x1, segs[0].x2) + 2;
+  y2 = MAX (segs[0].y1, segs[0].y2) + 2;
 
   for (i = 1; i < private->n_segs; i++)
     {
-      gint x3 = segs[i].x1 - 1;
-      gint y3 = segs[i].y1 - 1;
-      gint x4 = x3 + 3;
-      gint y4 = y3 + 3;
+      gint x3 = MIN (segs[i].x1, segs[i].x2) - 1;
+      gint y3 = MIN (segs[i].y1, segs[i].y2) - 1;
+      gint x4 = MAX (segs[i].x1, segs[i].x2) + 2;
+      gint y4 = MAX (segs[i].y1, segs[i].y2) + 2;
 
       x1 = MIN (x1, x3);
       y1 = MIN (y1, y3);