new mono panner widget; make stereo panner respond to changes in colors immediately

git-svn-id: svn://localhost/ardour2/branches/3.0@8474 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 85 insertions, 0 deletions

diff --git a/gtk2_ardour/mono_panner.h b/gtk2_ardour/mono_panner.h
new file mode 100644
index 0000000000..5a44474a48
--- /dev/null
+++ b/gtk2_ardour/mono_panner.h
@@ -0,0 +1,85 @@
+/*
+    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_mono_panner_h__
+#define __gtk_ardour_mono_panner_h__
+
+#include "pbd/signals.h"
+
+#include <gtkmm/drawingarea.h>
+#include <boost/shared_ptr.hpp>
+
+#include "gtkmm2ext/binding_proxy.h"
+
+namespace PBD {
+        class Controllable;
+}
+
+class MonoPanner : public Gtk::DrawingArea
+{
+  public:
+	MonoPanner (boost::shared_ptr<PBD::Controllable> pos);
+	~MonoPanner ();
+
+        boost::shared_ptr<PBD::Controllable> get_controllable() const { return position_control; }
+
+  protected:
+	bool on_expose_event (GdkEventExpose*);
+	bool on_button_press_event (GdkEventButton*);
+	bool on_button_release_event (GdkEventButton*);
+	bool on_motion_notify_event (GdkEventMotion*);
+        bool on_scroll_event (GdkEventScroll*);
+        bool on_key_press_event (GdkEventKey*);
+        bool on_key_release_event (GdkEventKey*);
+        bool on_enter_notify_event (GdkEventCrossing* ev);
+        bool on_leave_notify_event (GdkEventCrossing* ev);
+
+  private:
+        boost::shared_ptr<PBD::Controllable> position_control;
+        PBD::ScopedConnectionList connections;
+        bool dragging;
+        int drag_start_x;
+        int last_drag_x;
+        double accumulated_delta;
+        bool detented;
+
+        Gtk::Window* drag_data_window;
+        Gtk::Label* drag_data_label;
+
+        BindingProxy position_binder;
+
+        void value_change ();
+        void set_drag_data ();
+
+        struct ColorScheme { 
+            uint32_t outline;
+            uint32_t fill;
+            uint32_t text;
+            uint32_t background;
+            uint32_t pos_outline;
+            uint32_t pos_fill;
+        };
+
+        static ColorScheme colors;
+        static void set_colors ();
+        static bool have_colors;
+        void color_handler ();
+};
+
+#endif /* __gtk_ardour_mono_panner_h__ */