first basic pass at a single widget stereo panner

git-svn-id: svn://localhost/ardour2/branches/3.0@8135 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 54 insertions, 0 deletions

diff --git a/gtk2_ardour/stereo_panner.h b/gtk2_ardour/stereo_panner.h
new file mode 100644
index 0000000000..f4652ca475
--- /dev/null
+++ b/gtk2_ardour/stereo_panner.h
@@ -0,0 +1,54 @@
+/*
+    Copyright (C) 2010 Paul Davis
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __gtk_ardour_stereo_panner_h__
+#define __gtk_ardour_stereo_panner_h__
+
+#include "pbd/signals.h"
+
+#include <gtkmm/drawingarea.h>
+#include <boost/shared_ptr.hpp>
+
+namespace PBD {
+        class Controllable;
+}
+
+class StereoPanner : public Gtk::DrawingArea
+{
+  public:
+	StereoPanner (boost::shared_ptr<PBD::Controllable> pos, boost::shared_ptr<PBD::Controllable> width);
+	~StereoPanner ();
+
+  protected:
+	bool on_expose_event (GdkEventExpose*);
+	bool on_button_press_event (GdkEventButton*);
+	bool on_button_release_event (GdkEventButton*);
+	bool on_motion_notify_event (GdkEventMotion*);
+
+  private:
+        boost::shared_ptr<PBD::Controllable> position_control;
+        boost::shared_ptr<PBD::Controllable> width_control;
+        PBD::ScopedConnectionList connections;
+        bool dragging;
+        bool dragging_position;
+        int drag_start_x;
+        int last_drag_x;
+};
+
+#endif /* __gtk_ardour_stereo_panner_h__ */