143 lines
4.3 KiB
C++
143 lines
4.3 KiB
C++
/*
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Copyright (C) 2007 Paul Davis
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Author: Dave Robillard
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __gtk_ardour_canvas_midi_event_h__
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#define __gtk_ardour_canvas_midi_event_h__
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#include <boost/shared_ptr.hpp>
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#include <libgnomecanvasmm/text.h>
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#include <libgnomecanvasmm/widget.h>
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#include "ardour/midi_model.h"
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#include "rgb_macros.h"
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#include "ardour_ui.h"
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#include "ui_config.h"
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#include "interactive-item.h"
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class Editor;
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class MidiRegionView;
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namespace Evoral { template<typename T> class Note; }
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namespace Gnome {
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namespace Canvas {
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/** This manages all the event handling for any MIDI event on the canvas.
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*
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* This is not actually a canvas item itself to avoid the dreaded diamond,
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* since various types of canvas items (Note (rect), Hit (diamond), etc)
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* need to share this functionality but can't share an ancestor.
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*
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* Note: Because of this, derived classes need to manually bounce events to
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* on_event, it won't happen automatically.
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*
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* A newer, better canvas should remove the need for all the ugly here.
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*/
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class CanvasNoteEvent : virtual public sigc::trackable, public InteractiveItem {
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public:
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typedef Evoral::Note<ARDOUR::MidiModel::TimeType> NoteType;
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CanvasNoteEvent(
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MidiRegionView& region,
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Item* item,
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const boost::shared_ptr<NoteType> note = boost::shared_ptr<NoteType>());
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virtual ~CanvasNoteEvent();
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virtual void show() = 0;
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virtual void hide() = 0;
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virtual bool on_event(GdkEvent* ev);
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bool valid() const { return _valid; }
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void invalidate ();
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void validate ();
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bool selected() const { return _selected; }
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void selected(bool yn);
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virtual void move_event(double dx, double dy) = 0;
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uint32_t base_color();
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void show_velocity();
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void hide_velocity();
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/** Channel changed for this specific event */
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void on_channel_change(uint8_t channel);
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/** Channel selection changed */
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void on_channel_selection_change(uint16_t selection);
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void show_channel_selector();
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void hide_channel_selector();
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virtual void set_outline_color(uint32_t c) = 0;
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virtual void set_fill_color(uint32_t c) = 0;
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virtual double x1() = 0;
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virtual double y1() = 0;
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virtual double x2() = 0;
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virtual double y2() = 0;
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const boost::shared_ptr<NoteType> note() const { return _note; }
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MidiRegionView& region_view() const { return _region; }
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inline static uint32_t meter_style_fill_color(uint8_t vel) {
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if (vel < 64) {
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return UINT_INTERPOLATE(
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ARDOUR_UI::config()->canvasvar_MidiNoteMeterColorBase.get(),
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ARDOUR_UI::config()->canvasvar_MidiNoteMeterColorMid.get(),
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(vel / (double)63.0));
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} else {
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return UINT_INTERPOLATE(
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ARDOUR_UI::config()->canvasvar_MidiNoteMeterColorMid.get(),
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ARDOUR_UI::config()->canvasvar_MidiNoteMeterColorTop.get(),
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((vel-64) / (double)63.0));
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}
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}
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/// calculate outline colors from fill colors of notes
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inline static uint32_t calculate_outline(uint32_t color) {
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return UINT_INTERPOLATE(color, 0x000000ff, 0.5);
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}
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/// hue circle divided into 16 equal-looking parts, courtesy Thorsten Wilms
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static const uint32_t midi_channel_colors[16];
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protected:
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enum State { None, Pressed, Dragging };
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MidiRegionView& _region;
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Item* const _item;
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InteractiveText* _text;
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Widget* _channel_selector_widget;
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State _state;
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const boost::shared_ptr<NoteType> _note;
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bool _own_note;
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bool _selected;
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bool _valid;
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};
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} // namespace Gnome
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} // namespace Canvas
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#endif /* __gtk_ardour_canvas_midi_event_h__ */
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