draw a grey background to a track

diff --git a/alg/glsequence.cpp b/alg/glsequence.cpp
index 5362b21b1ce96824865d734a6ae39fd7eb116c4a..040f71c30b1f9c439cdb3a1c540eb6dec53a86fd 100644 (file)
--- a/alg/glsequence.cpp
+++ b/alg/glsequence.cpp
@@ -353,9 +353,12 @@ void GlSequence::draw_box(GLfloat world_left, GLfloat world_right,
 
 void GlSequence::draw_track(GLfloat left, GLfloat right) const
 {
-  glColor3fv(color()->get());
   // draw main sequence track
+  glColor3fv(color()->get());
   draw_box(left, right, x(), x()+Sequence::size(), height(), y(), 0.0, GL_LINE_LOOP);
+
+  glColor3f(0.8, 0.8, 0.8);
+  draw_box(left, right, x(), x()+Sequence::size(), height(), y(), 0.0);
 }
 
 void GlSequence::draw_annotations(GLfloat left, GLfloat right) const