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--- a/ui/gtk/graph_analysis.c
+++ b/ui/gtk/graph_analysis.c
@@ -504,28 +504,34 @@ static void dialog_graph_draw(graph_analysis_data_t *user_data)
#if GTK_CHECK_VERSION(2,22,0)
/* Paint time title background */
- cr = cairo_create (user_data->dlg.surface_time);
- gdk_cairo_set_source_pixbuf (cr, bg_pixbuf, 0, 0);
- cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REPEAT);
- cairo_rectangle (cr, 0, 0, draw_area_time_alloc.width, top_y_border);
- cairo_fill (cr);
- cairo_destroy (cr);
+ if ( user_data->dlg.surface_time ) {
+ cr = cairo_create (user_data->dlg.surface_time);
+ gdk_cairo_set_source_pixbuf (cr, bg_pixbuf, 0, 0);
+ cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REPEAT);
+ cairo_rectangle (cr, 0, 0, draw_area_time_alloc.width, top_y_border);
+ cairo_fill (cr);
+ cairo_destroy (cr);
+ }
/* Paint main title background */
- cr = cairo_create (user_data->dlg.surface_main);
- gdk_cairo_set_source_pixbuf (cr, bg_pixbuf, 0, 0);
- cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REPEAT);
- cairo_rectangle (cr, 0, 0, draw_area_alloc.width, top_y_border);
- cairo_fill (cr);
- cairo_destroy (cr);
+ if ( user_data->dlg.surface_main ) {
+ cr = cairo_create (user_data->dlg.surface_main);
+ gdk_cairo_set_source_pixbuf (cr, bg_pixbuf, 0, 0);
+ cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REPEAT);
+ cairo_rectangle (cr, 0, 0, draw_area_alloc.width, top_y_border);
+ cairo_fill (cr);
+ cairo_destroy (cr);
+ }
/* Paint main comment background */
- cr = cairo_create (user_data->dlg.surface_comments);
- gdk_cairo_set_source_pixbuf (cr, bg_pixbuf, 0, 0);
- cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REPEAT);
- cairo_rectangle (cr, 0, 0, draw_area_comments_alloc.width, top_y_border);
- cairo_fill (cr);
- cairo_destroy (cr);
+ if ( user_data->dlg.surface_comments ) {
+ cr = cairo_create (user_data->dlg.surface_comments);
+ gdk_cairo_set_source_pixbuf (cr, bg_pixbuf, 0, 0);
+ cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REPEAT);
+ cairo_rectangle (cr, 0, 0, draw_area_comments_alloc.width, top_y_border);
+ cairo_fill (cr);
+ cairo_destroy (cr);
+ }
#else
/* Paint time title background */
if ( GDK_IS_DRAWABLE(user_data->dlg.pixmap_time) ) {
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