* renamed canvas-midi-event.* into canvas-note-event.*

* make MidiModel keep track of its CanvasProgramChange instances

git-svn-id: svn://localhost/ardour2/branches/3.0@3297 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 102 insertions, 0 deletions

diff --git a/gtk2_ardour/canvas-note-event.h b/gtk2_ardour/canvas-note-event.h
new file mode 100644
index 0000000000..f575808bb1
--- /dev/null
+++ b/gtk2_ardour/canvas-note-event.h
@@ -0,0 +1,102 @@
+/*
+    Copyright (C) 2007 Paul Davis 
+    Author: Dave Robillard
+
+    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_canvas_midi_event_h__
+#define __gtk_ardour_canvas_midi_event_h__
+
+#include "simplerect.h"
+#include "midi_channel_selector.h"
+#include <libgnomecanvasmm/text.h>
+#include <libgnomecanvasmm/widget.h>
+#include <ardour/midi_model.h>
+
+class Editor;
+class MidiRegionView;
+
+namespace Gnome {
+namespace Canvas {
+
+
+/** This manages all the event handling for any MIDI event on the canvas.
+ *
+ * This is not actually a canvas item itself to avoid the dreaded diamond,
+ * since various types of canvas items (Note (rect), Hit (diamond), etc)
+ * need to share this functionality but can't share an ancestor.
+ *
+ * Note: Because of this, derived classes need to manually bounce events to
+ * on_event, it won't happen automatically.
+ *
+ * A newer, better canvas should remove the need for all the ugly here.
+ */
+class CanvasNoteEvent : public sigc::trackable {
+public:
+	CanvasNoteEvent(
+			MidiRegionView&                       region,
+			Item*                                 item,
+			const boost::shared_ptr<ARDOUR::Note> note = boost::shared_ptr<ARDOUR::Note>());
+
+	virtual ~CanvasNoteEvent();
+
+	bool on_event(GdkEvent* ev);
+
+	bool selected() const { return _selected; }
+	void selected(bool yn);
+
+	void move_event(double dx, double dy);
+	
+	void show_velocity();
+	void hide_velocity();
+	
+	/**
+	 * This slot is called, when a new channel is selected for the single event
+	 * */
+	void on_channel_change(uint8_t channel);
+	void on_channel_selection_change(uint16_t selection);
+	
+	void show_channel_selector();
+	
+	void hide_channel_selector();
+
+	virtual void set_outline_color(uint32_t c) = 0;
+	virtual void set_fill_color(uint32_t c) = 0;
+	
+	virtual double x1() = 0;
+	virtual double y1() = 0;
+	virtual double x2() = 0;
+	virtual double y2() = 0;
+
+	const boost::shared_ptr<ARDOUR::Note> note() { return _note; }
+
+protected:
+	enum State { None, Pressed, Dragging };
+
+	MidiRegionView&                       _region;
+	Item* const                           _item;
+	Text*                                 _text;
+	Widget*                               _channel_selector_widget;
+	State                                 _state;
+	const boost::shared_ptr<ARDOUR::Note> _note;
+	bool                                  _own_note;
+	bool                                  _selected;
+};
+
+} // namespace Gnome
+} // namespace Canvas
+
+#endif /* __gtk_ardour_canvas_midi_event_h__ */