2 Copyright (C) 2001-2007 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 #ifndef __gtk_ardour_midi_region_view_h__
20 #define __gtk_ardour_midi_region_view_h__
24 #include <libgnomecanvasmm.h>
25 #include <libgnomecanvasmm/polygon.h>
26 #include <ardour/midi_track.h>
27 #include <ardour/midi_region.h>
28 #include <ardour/midi_model.h>
29 #include <ardour/diskstream.h>
30 #include <ardour/types.h>
32 #include "region_view.h"
33 #include "midi_time_axis.h"
34 #include "time_axis_view_item.h"
35 #include "automation_line.h"
38 #include "canvas-note.h"
39 #include "canvas-midi-event.h"
40 #include "canvas-program-change.h"
47 class MidiTimeAxisView;
49 class AutomationTimeAxisView;
50 class AutomationRegionView;
52 class MidiRegionView : public RegionView
55 MidiRegionView (ArdourCanvas::Group *,
57 boost::shared_ptr<ARDOUR::MidiRegion>,
58 double initial_samples_per_unit,
59 Gdk::Color& basic_color);
63 virtual void init (Gdk::Color& basic_color, bool wfd);
65 inline const boost::shared_ptr<ARDOUR::MidiRegion> midi_region() const
66 { return boost::dynamic_pointer_cast<ARDOUR::MidiRegion>(_region); }
68 inline MidiTimeAxisView* midi_view() const
69 { return dynamic_cast<MidiTimeAxisView*>(&trackview); }
71 inline MidiStreamView* midi_stream_view() const
72 { return midi_view()->midi_view(); }
74 void set_y_position_and_height (double, double);
76 void set_frame_color();
78 void redisplay_model();
80 GhostRegion* add_ghost (TimeAxisView&);
82 void add_note(const boost::shared_ptr<ARDOUR::Note> note);
83 void resolve_note(uint8_t note_num, double end_time);
85 void add_pgm_change(boost::shared_ptr<MIDI::Event> event);
89 void extend_active_notes();
91 void create_note_at(double x, double y, double duration);
93 void display_model(boost::shared_ptr<ARDOUR::MidiModel> model);
95 /* This stuff is a bit boilerplatey ATM. Work in progress. */
97 inline void start_delta_command(string name = "midi edit") {
99 _delta_command = _model->new_delta_command(name);
102 void command_add_note(const boost::shared_ptr<ARDOUR::Note> note) {
104 _delta_command->add(note);
107 void command_remove_note(ArdourCanvas::CanvasNoteEvent* ev) {
108 if (_delta_command && ev->note()) {
109 _selection.erase(ev);
110 _delta_command->remove(ev->note());
115 void abort_command() {
116 delete _delta_command;
117 _delta_command = NULL;
121 void apply_command() {
122 if (_delta_command) {
123 _model->apply_command(_delta_command);
124 _delta_command = NULL;
126 midi_view()->midi_track()->diskstream()->playlist_modified();
129 void note_entered(ArdourCanvas::CanvasNoteEvent* ev);
130 void unique_select(ArdourCanvas::CanvasNoteEvent* ev);
131 void note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add);
132 void note_deselected(ArdourCanvas::CanvasNoteEvent* ev, bool add);
133 void delete_selection();
134 size_t selection_size() { return _selection.size(); }
136 void move_selection(double dx, double dy);
137 void note_dropped(ArdourCanvas::CanvasNoteEvent* ev, double dt, uint8_t dnote);
140 * This function is needed to subtract the region start in pixels
141 * from world coordinates submitted by the mouse
143 double get_position_pixels(void);
146 * This function is called by CanvasMidiNote when resizing starts,
147 * i.e. when the user presses mouse-2 on the note
148 * @param note_end which end of the note, NOTE_ON or NOTE_OFF
150 void begin_resizing(ArdourCanvas::CanvasNote::NoteEnd note_end);
153 * This function is called while the user moves the mouse when resizing notes
154 * @param note_end which end of the note, NOTE_ON or NOTE_OFF
155 * @param x the difference in mouse motion, ie the motion difference if relative=true
156 * or the absolute mouse position (track-relative) if relative is false
157 * @param relative true if relative resizing is taking place, false if absolute resizing
159 void update_resizing(ArdourCanvas::CanvasNote::NoteEnd note_end, double x, bool relative);
162 * This function is called while the user releases the mouse button when resizing notes
163 * @param note_end which end of the note, NOTE_ON or NOTE_OFF
164 * @param event_x the absolute mouse position (track-relative)
165 * @param relative true if relative resizing is taking place, false if absolute resizing
167 void commit_resizing(ArdourCanvas::CanvasNote::NoteEnd note_end, double event_x, bool relative);
170 * This function is called while the user adjusts the velocity on a selection of notes
171 * @param velocity the relative or absolute velocity, depending on the value of relative
172 * @param relative true if the given velocity represents a delta to be applied to all notes, false
173 * if the absolute value of the note shoud be set
175 void change_velocity(uint8_t velocity, bool relative=false);
178 * This function is called when the user adjusts the midi channel of a selection of notes
179 * @param channel - the channel number of the new channel, zero-based
181 void change_channel(uint8_t channel);
183 enum MouseState { None, Pressed, SelectTouchDragging, SelectRectDragging, AddDragging, EraseTouchDragging };
184 MouseState mouse_state() const { return _mouse_state; }
186 struct NoteResizeData {
187 ArdourCanvas::CanvasNote *canvas_note;
188 ArdourCanvas::SimpleRect *resize_rect;
193 * This function provides the snap function for region position relative coordinates
194 * for pixel units (double) instead of nframes_t
195 * @param x a pixel coordinate relative to region start
196 * @return the snapped pixel coordinate relative to region start
198 double snap_to_pixel(double x);
201 * This function provides the snap function for region position relative coordinates
202 * for pixel units (double) instead of nframes_t
203 * @param x a pixel coordinate relative to region start
204 * @return the snapped nframes_t coordinate relative to region start
206 nframes_t snap_to_frame(double x);
209 * This function provides the snap function for region position relative coordinates
210 * @param x a pixel coordinate relative to region start
211 * @return the snapped nframes_t coordinate relative to region start
213 nframes_t snap_to_frame(nframes_t x);
218 * this constructor allows derived types
219 * to specify their visibility requirements
220 * to the TimeAxisViewItem parent class
222 MidiRegionView (ArdourCanvas::Group *,
224 boost::shared_ptr<ARDOUR::MidiRegion>,
225 double samples_per_unit,
226 Gdk::Color& basic_color,
227 TimeAxisViewItem::Visibility);
229 void region_resized (ARDOUR::Change);
231 void set_flags (XMLNode *);
234 void reset_width_dependent_items (double pixel_width);
239 void switch_source(boost::shared_ptr<ARDOUR::Source> src);
241 bool canvas_event(GdkEvent* ev);
242 bool note_canvas_event(GdkEvent* ev);
244 int8_t force_channel;
245 void midi_force_channel_changed(int8_t channel);
246 uint16_t last_channel_selection;
247 void midi_channel_selection_changed(uint16_t selection);
249 void clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev);
250 void clear_selection() { clear_selection_except(NULL); }
251 void update_drag_selection(double last_x, double x, double last_y, double y);
253 double _default_note_length;
255 boost::shared_ptr<ARDOUR::MidiModel> _model;
256 std::vector<ArdourCanvas::CanvasNoteEvent*> _events;
257 ArdourCanvas::CanvasNote** _active_notes;
258 ArdourCanvas::Group* _note_group;
259 ARDOUR::MidiModel::DeltaCommand* _delta_command;
261 MouseState _mouse_state;
264 /// currently selected CanvasNoteEvents
265 typedef std::set<ArdourCanvas::CanvasNoteEvent*> Selection;
266 Selection _selection;
269 * this enables vanilla notes to be marked for selection
270 * they are added to _selection when redisplay_model is called
271 * this is necessary for selecting notes during/after model manipulations
273 std::set< boost::shared_ptr<ARDOUR::Note> > _marked_for_selection;
275 std::vector<NoteResizeData *> _resize_data;
278 #endif /* __gtk_ardour_midi_region_view_h__ */