fix color of top-most MIDI note line on the canvas

diff --git a/gtk2_ardour/midi_streamview.cc b/gtk2_ardour/midi_streamview.cc
index 97ce7ed9399c98223814b8224b9ef9230219caf0..55f4732a5c846affe4b4b579138f3bcc76c7b50a 100644 (file)
--- a/gtk2_ardour/midi_streamview.cc
+++ b/gtk2_ardour/midi_streamview.cc
@@ -288,7 +288,7 @@ MidiStreamView::draw_note_lines()
        }
 
        double y;
-       double prev_y = 0;
+       double prev_y = .5;
        uint32_t color;
 
        _note_lines->clear();
@@ -302,15 +302,17 @@ MidiStreamView::draw_note_lines()
         * coordinate system in which y=0 is at the top
         */
 
-       for (int i = highest_note(); i >= lowest_note(); --i) {
+       for (int i = highest_note() + 1; i >= lowest_note(); --i) {
 
-               y = note_to_y (i);
+               y = floor(note_to_y (i)) + .5;
 
                /* this is the line actually corresponding to the division
                 * between notes
                 */
 
-               _note_lines->add (y, 1.0, ARDOUR_UI::config()->get_canvasvar_PianoRollBlackOutline());
+               if (i <= highest_note()) {
+                       _note_lines->add (y, 1.0, ARDOUR_UI::config()->get_canvasvar_PianoRollBlackOutline());
+               }
 
                /* now add a thicker line/bar which covers the entire vertical
                 * height of this note.
@@ -332,7 +334,7 @@ MidiStreamView::draw_note_lines()
                double h = y - prev_y;
                double mid = y + (h/2.0);
                                
-               if (height > 1.0) {
+               if (height > 1.0) { // XXX ? should that not be h >= 1 ?
                        _note_lines->add (mid, h, color);
                }