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/*
Copyright (C) 2007 Paul Davis
Author: David 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 <boost/shared_ptr.hpp>
#include <libgnomecanvasmm/text.h>
#include <libgnomecanvasmm/widget.h>
#include "ardour/midi_model.h"
#include "rgb_macros.h"
#include "ardour_ui.h"
#include "canvas-noevent-text.h"
#include "ui_config.h"
class Editor;
class MidiRegionView;
namespace Evoral { template<typename T> class Note; }
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 : virtual public sigc::trackable
{
public:
typedef Evoral::Note<ARDOUR::MidiModel::TimeType> NoteType;
CanvasNoteEvent(
MidiRegionView& region,
Item* item,
const boost::shared_ptr<NoteType> note = boost::shared_ptr<NoteType>());
virtual ~CanvasNoteEvent();
static PBD::Signal1<void,CanvasNoteEvent*> CanvasNoteEventDeleted;
virtual void show() = 0;
virtual void hide() = 0;
virtual bool on_event(GdkEvent* ev);
bool valid() const { return _valid; }
void invalidate ();
void validate ();
bool selected() const { return _selected; }
void set_selected(bool yn);
virtual void move_event(double dx, double dy) = 0;
uint32_t base_color();
void show_velocity();
void hide_velocity();
/** Channel changed for this specific event */
void on_channel_change(uint8_t channel);
/** Channel selection changed */
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() const = 0;
virtual double y1() const = 0;
virtual double x2() const = 0;
virtual double y2() const = 0;
float mouse_x_fraction() const { return _mouse_x_fraction; }
float mouse_y_fraction() const { return _mouse_y_fraction; }
const boost::shared_ptr<NoteType> note() const { return _note; }
MidiRegionView& region_view() const { return _region; }
inline static uint32_t meter_style_fill_color(uint8_t vel, bool selected) {
if (selected) {
if (vel < 64) {
return UINT_INTERPOLATE(
ARDOUR_UI::config()->canvasvar_SelectedMidiNoteColorBase.get(),
ARDOUR_UI::config()->canvasvar_SelectedMidiNoteColorMid.get(),
(vel / (double)63.0));
} else {
return UINT_INTERPOLATE(
ARDOUR_UI::config()->canvasvar_SelectedMidiNoteColorMid.get(),
ARDOUR_UI::config()->canvasvar_SelectedMidiNoteColorTop.get(),
((vel-64) / (double)63.0));
}
} else {
if (vel < 64) {
return UINT_INTERPOLATE(
ARDOUR_UI::config()->canvasvar_MidiNoteColorBase.get(),
ARDOUR_UI::config()->canvasvar_MidiNoteColorMid.get(),
(vel / (double)63.0));
} else {
return UINT_INTERPOLATE(
ARDOUR_UI::config()->canvasvar_MidiNoteColorMid.get(),
ARDOUR_UI::config()->canvasvar_MidiNoteColorTop.get(),
((vel-64) / (double)63.0));
}
}
}
/// calculate outline colors from fill colors of notes
inline static uint32_t calculate_outline(uint32_t color) {
return UINT_INTERPOLATE(color, 0x000000ff, 0.5);
}
/// hue circle divided into 16 equal-looking parts, courtesy Thorsten Wilms
static const uint32_t midi_channel_colors[16];
bool mouse_near_ends () const;
bool big_enough_to_trim () const;
protected:
enum State { None, Pressed, Dragging };
MidiRegionView& _region;
Item* const _item;
NoEventText* _text;
Widget* _channel_selector_widget;
State _state;
const boost::shared_ptr<NoteType> _note;
bool _own_note;
bool _selected;
bool _valid;
float _mouse_x_fraction;
float _mouse_y_fraction;
void set_mouse_fractions (GdkEvent*);
};
} // namespace Gnome
} // namespace Canvas
#endif /* __gtk_ardour_canvas_midi_event_h__ */
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