various changes to controls_layout size management

git-svn-id: svn://localhost/trunk/ardour2@205 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 29 insertions, 0 deletions

diff --git a/gtk2_ardour/editor_canvas_events.cc b/gtk2_ardour/editor_canvas_events.cc
index c4bd2081e7..f09c4d028f 100644
--- a/gtk2_ardour/editor_canvas_events.cc
+++ b/gtk2_ardour/editor_canvas_events.cc
@@ -45,10 +45,35 @@ using namespace ARDOUR;
 using namespace Gtk;
 
 bool
+Editor::track_canvas_scroll (GdkEventScroll* ev)
+{
+	switch (ev->direction) {
+	case GDK_SCROLL_UP:
+		scroll_tracks_up_line ();
+		return true;
+		break;
+
+	case GDK_SCROLL_DOWN:
+		scroll_tracks_down_line ();
+		return true;
+		
+	default:
+		/* no left/right handling yet */
+		break;
+	}
+
+	return false;
+}
+
+bool
 Editor::track_canvas_event (GdkEvent *event, ArdourCanvas::Item* item)
 {
 	gint x, y;
 
+	/* this is the handler for events that are not handled by
+	   items.
+	*/
+
 	switch (event->type) {
 	case GDK_MOTION_NOTIFY:
 		/* keep those motion events coming */
@@ -64,6 +89,10 @@ Editor::track_canvas_event (GdkEvent *event, ArdourCanvas::Item* item)
 		}
 		break;
 
+	case GDK_SCROLL:
+		track_canvas_scroll (&event->scroll);
+		break;
+
 	default:
 		break;
 	}