Apply MIDI keyboard and "scroomer" patch.

git-svn-id: svn://localhost/ardour2/trunk@2908 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 104 insertions, 0 deletions

diff --git a/gtk2_ardour/piano_roll_header.h b/gtk2_ardour/piano_roll_header.h
new file mode 100644
index 0000000000..141e7663f5
--- /dev/null
+++ b/gtk2_ardour/piano_roll_header.h
@@ -0,0 +1,104 @@
+/*
+    Copyright (C) 2008 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 __ardour_piano_roll_header_h__
+#define __ardour_piano_roll_header_h__
+
+#include <ardour/types.h>
+
+#include <gtkmm/drawingarea.h>
+
+namespace ARDOUR {
+	class MidiTrack;
+}
+
+class MidiTimeAxisView;
+class MidiStreamView;
+
+class PianoRollHeader : public Gtk::DrawingArea {
+public:
+	PianoRollHeader(MidiStreamView&);
+
+	bool on_expose_event (GdkEventExpose*);
+	bool on_motion_notify_event (GdkEventMotion*);
+	bool on_button_press_event (GdkEventButton*);
+	bool on_button_release_event (GdkEventButton*);
+	bool on_scroll_event (GdkEventScroll*);
+	bool on_enter_notify_event (GdkEventCrossing*);
+	bool on_leave_notify_event (GdkEventCrossing*);
+
+	void on_size_request(Gtk::Requisition*);
+	void on_size_allocate(Gtk::Allocation& a);
+
+	void note_range_changed();
+
+	struct Color {
+		Color();
+		Color(double _r, double _g, double _b);
+		inline void set(const Color& c);
+		
+		double r;
+		double g;
+		double b;
+	};
+
+private:
+	static Color white;
+	static Color white_highlight;
+	static Color white_shade_light;
+	static Color white_shade_dark;
+	static Color black;
+	static Color black_highlight;
+	static Color black_shade_light;
+	static Color black_shade_dark;
+
+	PianoRollHeader(const PianoRollHeader&);
+
+	enum ItemType {
+		BLACK_SEPARATOR,
+		BLACK_MIDDLE_SEPARATOR,
+		BLACK,
+		WHITE_SEPARATOR,
+		WHITE_RECT,
+		WHITE_CF,
+		WHITE_EB,
+		WHITE_DGA
+	};
+
+	void invalidate_note_range(int lowest, int highest);
+
+	void get_path(ItemType, int note, double x[], double y[]);
+
+	void send_note_on(uint8_t note);
+	void send_note_off(uint8_t note);
+
+	MidiStreamView& _view;
+
+	ARDOUR::Byte _event[3];
+
+	Cairo::RefPtr<Cairo::Context> cc;
+	bool _active_notes[128];
+	uint8_t _highlighted_note;
+	uint8_t _clicked_note;
+	double _grab_y;
+	
+	double _note_height;
+	double _black_note_width;
+};
+
+#endif /* __ardour_piano_roll_header_h__ */