[goffice] Don't use badly rounded values when clipping markers. [#649485]

[Jean Bréfort <jbrefort src gnome org>]

commit 36d5786aa4b3baf2b7bea6dce143f41717689afb
Author: Jean Brefort <jean brefort normalesup org>
Date:   Fri May 6 08:24:27 2011 +0200

    Don't use badly rounded values when clipping markers. [#649485]

 ChangeLog                 |    5 +++++
 NEWS                      |    1 +
 goffice/utils/go-marker.c |    4 ++--
 3 files changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 8875851..af13161 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-05-06  Jean Brefort  <jean brefort normalesup org>
+
+	* goffice/utils/go-marker.c (go_marker_create_cairo_surface): don't
+	use badly rounded values when clipping markers. [#649485]
+
 2011-04-16  Jean Brefort  <jean brefort normalesup org>
 
 	* goffice/utils/go-geometry.c (go_direction_get_type),
diff --git a/NEWS b/NEWS
index 91cfc59..f74dbd8 100644
--- a/NEWS
+++ b/NEWS
@@ -7,6 +7,7 @@ Jean:
 	* Fixed closed bezier spline evaluation. [#646700]
 	* Implement dropbar plots with linear or logarithmic index axis. [#646832]
 	* Fix legends for plots with marker only style. [#647367]
+	* Don't use badly rounded values when clipping markers. [#649485]
 
 Morten:
 	* Plug leaks.
diff --git a/goffice/utils/go-marker.c b/goffice/utils/go-marker.c
index ee50f27..d00b90d 100644
--- a/goffice/utils/go-marker.c
+++ b/goffice/utils/go-marker.c
@@ -313,8 +313,8 @@ go_marker_create_cairo_surface (GOMarker const *marker, cairo_t *cr, double scal
 
 	cr_surface = cairo_surface_create_similar (current_cr_surface,
 						   CAIRO_CONTENT_COLOR_ALPHA,
-						   2.0 * offset,
-						   2.0 * offset);
+						   ceil (2.0 * offset),
+						   ceil (2.0 * offset));
 	cr_tmp = cairo_create (cr_surface);
 
 	go_marker_render (marker, cr_tmp, offset, offset, scale);