2 * Copyright (C) 2013-2018 Paul Davis <paul@linuxaudiosystems.com>
3 * Copyright (C) 2014-2015 David Robillard <d@drobilla.net>
4 * Copyright (C) 2015 Tim Mayberry <mojofunk@gmail.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 #ifndef __gtk_ardour_note_base_h__
22 #define __gtk_ardour_note_base_h__
24 #include <boost/shared_ptr.hpp>
26 #include "temporal/beats.h"
27 #include "canvas/types.h"
28 #include "gtkmm2ext/colors.h"
30 #include "rgb_macros.h"
31 #include "ui_config.h"
37 template<typename T> class Note;
41 namespace ArdourCanvas {
46 /** Base class for canvas notes (sustained note rectangles and hit diamonds).
48 * This is not actually a canvas item itself to avoid the dreaded diamond
49 * inheritance pattern, since various types of canvas items (Note (rect), Hit
50 * (diamond), etc) need to share this functionality but can't share an
53 * Note: Because of this, derived classes need to manually bounce events to
54 * on_event, it won't happen automatically.
56 class NoteBase : public sigc::trackable
59 typedef Evoral::Note<Temporal::Beats> NoteType;
61 NoteBase (MidiRegionView& region, bool, const boost::shared_ptr<NoteType> note = boost::shared_ptr<NoteType>());
64 void set_item (ArdourCanvas::Item *);
65 ArdourCanvas::Item* item() const { return _item; }
67 virtual void show() = 0;
68 virtual void hide() = 0;
70 bool valid() const { return _valid; }
74 bool selected() const { return _selected; }
75 void set_selected(bool yn);
77 virtual void move_event(double dx, double dy) = 0;
79 uint32_t base_color();
84 /** Channel changed for this specific event */
85 void on_channel_change(uint8_t channel);
87 /** Channel selection changed */
88 void on_channel_selection_change(uint16_t selection);
90 virtual void set_outline_color(uint32_t c) = 0;
91 virtual void set_fill_color(uint32_t c) = 0;
93 virtual void set_ignore_events(bool ignore) = 0;
95 virtual ArdourCanvas::Coord x0 () const = 0;
96 virtual ArdourCanvas::Coord y0 () const = 0;
97 virtual ArdourCanvas::Coord x1 () const = 0;
98 virtual ArdourCanvas::Coord y1 () const = 0;
100 float mouse_x_fraction() const { return _mouse_x_fraction; }
101 float mouse_y_fraction() const { return _mouse_y_fraction; }
103 const boost::shared_ptr<NoteType> note() const { return _note; }
104 MidiRegionView& region_view() const { return _region; }
106 static void set_colors ();
108 static Gtkmm2ext::Color meter_style_fill_color(uint8_t vel, bool selected);
110 /// calculate outline colors from fill colors of notes
111 inline static uint32_t calculate_outline(uint32_t color, bool selected=false) {
113 return _selected_col;
115 return UINT_INTERPOLATE(color, 0x000000ff, 0.5);
119 /// hue circle divided into 16 equal-looking parts, courtesy Thorsten Wilms
120 static const uint32_t midi_channel_colors[16];
122 bool mouse_near_ends () const;
123 virtual bool big_enough_to_trim () const;
126 enum State { None, Pressed, Dragging };
128 MidiRegionView& _region;
129 ArdourCanvas::Item* _item;
130 ArdourCanvas::Text* _text;
132 const boost::shared_ptr<NoteType> _note;
137 float _mouse_x_fraction;
138 float _mouse_y_fraction;
140 void set_mouse_fractions (GdkEvent*);
143 bool event_handler (GdkEvent *);
145 static Gtkmm2ext::Color _selected_col;
146 static Gtkmm2ext::SVAModifier color_modifier;
147 static Gtkmm2ext::Color velocity_color_table[128];
148 static bool _color_init;
151 #endif /* __gtk_ardour_note_h__ */