[gnumeric] Fix selection background. [#648676]

[Jean BrÃfort <jbrefort src gnome org>]

commit 93fef8f8a18b792f511167a85cc3cf1094d2f56d
Author: Jean Brefort <jean brefort normalesup org>
Date:   Sun Jul 31 19:10:58 2011 +0200

    Fix selection background. [#648676]

 ChangeLog     |    5 +++++
 NEWS          |    3 +++
 src/pattern.c |    6 ++++++
 3 files changed, 14 insertions(+), 0 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 4ab91a4..8eaa021 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-07-31  Jean Brefort  <jean brefort normalesup org>
+
+	* src/pattern.c (gnumeric_background_set): always change selection
+	background color. [#648676]
+
 2011-07-30 Andreas J. Guelzow <aguelzow pyrshep ca>
 
 	* component/gnumeric.c (go_gnm_component_render): fix call to
diff --git a/NEWS b/NEWS
index 76b3043..46c647b 100644
--- a/NEWS
+++ b/NEWS
@@ -19,6 +19,9 @@ Andreas:
 	[#655389]
 	* Fix import of Excel 2003 xml files in non-C locale. [#655554]
 
+Jean:
+	* Fix selection background. [#648676]
+
 Morten:
 	* Fix --with-gnome compilation:  [#652802]
 	* Fix parsing crash.  [Redhat #726860]
diff --git a/src/pattern.c b/src/pattern.c
index 31e62d0..a9fdea0 100644
--- a/src/pattern.c
+++ b/src/pattern.c
@@ -71,6 +71,12 @@ gnumeric_background_set (GnmStyle const *mstyle, cairo_t *cr,
 		gopat.pattern = patterns[pattern - 1];
 		gopat.fore = gnm_style_get_pattern_color (mstyle)->go_color;
 		gopat.back = gnm_style_get_back_color (mstyle)->go_color;
+		if (is_selected) {
+			GOColor light;
+			light = theme? GO_COLOR_FROM_GDK (theme->light[GTK_STATE_SELECTED]): GO_COLOR_FROM_RGB (230, 230, 250);
+			gopat.fore = GO_COLOR_INTERPOLATE (light, gopat.fore, .5);
+			gopat.back = GO_COLOR_INTERPOLATE (light, gopat.back, .5);
+		}
 		crpat = go_pattern_create_cairo_pattern (&gopat, cr);
 		cairo_set_source (cr, crpat);
 		cairo_pattern_destroy (crpat);