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"
46 class MidiTimeAxisView;
48 class AutomationTimeAxisView;
49 class AutomationRegionView;
51 class MidiRegionView : public RegionView
54 MidiRegionView (ArdourCanvas::Group *,
56 boost::shared_ptr<ARDOUR::MidiRegion>,
57 double initial_samples_per_unit,
58 Gdk::Color& basic_color);
62 virtual void init (Gdk::Color& basic_color, bool wfd);
64 inline const boost::shared_ptr<ARDOUR::MidiRegion> midi_region() const
65 { return boost::dynamic_pointer_cast<ARDOUR::MidiRegion>(_region); }
67 inline MidiTimeAxisView* midi_view() const
68 { return dynamic_cast<MidiTimeAxisView*>(&trackview); }
70 inline MidiStreamView* midi_stream_view() const
71 { return midi_view()->midi_view(); }
73 void set_y_position_and_height (double, double);
75 void set_frame_color();
77 void redisplay_model();
79 GhostRegion* add_ghost (TimeAxisView&);
81 void add_note(const boost::shared_ptr<ARDOUR::Note> note);
82 void resolve_note(uint8_t note_num, double end_time);
86 void extend_active_notes();
88 void create_note_at(double x, double y, double duration);
90 void display_model(boost::shared_ptr<ARDOUR::MidiModel> model);
92 /* This stuff is a bit boilerplatey ATM. Work in progress. */
94 inline void start_delta_command(string name = "midi edit") {
96 _delta_command = _model->new_delta_command(name);
99 void command_add_note(const boost::shared_ptr<ARDOUR::Note> note) {
101 _delta_command->add(note);
104 void command_remove_note(ArdourCanvas::CanvasMidiEvent* ev) {
105 if (_delta_command && ev->note()) {
106 _selection.erase(ev);
107 _delta_command->remove(ev->note());
112 void abort_command() {
113 delete _delta_command;
114 _delta_command = NULL;
118 void apply_command() {
119 if (_delta_command) {
120 _model->apply_command(_delta_command);
121 _delta_command = NULL;
123 midi_view()->midi_track()->diskstream()->playlist_modified();
126 void note_entered(ArdourCanvas::CanvasMidiEvent* ev);
127 void unique_select(ArdourCanvas::CanvasMidiEvent* ev);
128 void note_selected(ArdourCanvas::CanvasMidiEvent* ev, bool add);
129 void note_deselected(ArdourCanvas::CanvasMidiEvent* ev, bool add);
130 void delete_selection();
131 size_t selection_size() { return _selection.size(); }
133 void move_selection(double dx, double dy);
134 void note_dropped(ArdourCanvas::CanvasMidiEvent* ev, double dt, uint8_t dnote);
137 * This function is needed to subtract the region start in pixels
138 * from world coordinates submitted by the mouse
140 double get_position_pixels(void);
143 * This function is called by CanvasMidiNote when resizing starts,
144 * i.e. when the user presses mouse-2 on the note
145 * @param note_end which end of the note, NOTE_ON or NOTE_OFF
147 void begin_resizing(ArdourCanvas::CanvasNote::NoteEnd note_end);
150 * This function is called while the user moves the mouse when resizing notes
151 * @param note_end which end of the note, NOTE_ON or NOTE_OFF
152 * @param x the difference in mouse motion, ie the motion difference if relative=true
153 * or the absolute mouse position (track-relative) if relative is false
154 * @param relative true if relative resizing is taking place, false if absolute resizing
156 void update_resizing(ArdourCanvas::CanvasNote::NoteEnd note_end, double x, bool relative);
159 * This function is called while the user releases the mouse button when resizing notes
160 * @param note_end which end of the note, NOTE_ON or NOTE_OFF
161 * @param event_x the absolute mouse position (track-relative)
162 * @param relative true if relative resizing is taking place, false if absolute resizing
164 void commit_resizing(ArdourCanvas::CanvasNote::NoteEnd note_end, double event_x, bool relative);
167 * This function is called while the user adjusts the velocity on a selection of notes
168 * @param velocity the relative or absolute velocity, depending on the value of relative
169 * @param relative true if the given velocity represents a delta to be applied to all notes, false
170 * if the absolute value of the note shoud be set
172 void change_velocity(uint8_t velocity, bool relative=false);
175 * This function is called when the user adjusts the midi channel of a selection of notes
176 * @param channel - the channel number of the new channel, zero-based
178 void change_channel(uint8_t channel);
180 enum MouseState { None, Pressed, SelectTouchDragging, SelectRectDragging, AddDragging, EraseTouchDragging };
181 MouseState mouse_state() const { return _mouse_state; }
183 struct NoteResizeData {
184 ArdourCanvas::CanvasNote *canvas_note;
185 ArdourCanvas::SimpleRect *resize_rect;
190 * This function provides the snap function for region position relative coordinates
191 * for pixel units (double) instead of nframes_t
192 * @param x a pixel coordinate relative to region start
193 * @return the snapped pixel coordinate relative to region start
195 double snap_to_pixel(double x);
198 * This function provides the snap function for region position relative coordinates
199 * for pixel units (double) instead of nframes_t
200 * @param x a pixel coordinate relative to region start
201 * @return the snapped nframes_t coordinate relative to region start
203 nframes_t snap_to_frame(double x);
206 * This function provides the snap function for region position relative coordinates
207 * @param x a pixel coordinate relative to region start
208 * @return the snapped nframes_t coordinate relative to region start
210 nframes_t snap_to_frame(nframes_t x);
215 * this constructor allows derived types
216 * to specify their visibility requirements
217 * to the TimeAxisViewItem parent class
219 MidiRegionView (ArdourCanvas::Group *,
221 boost::shared_ptr<ARDOUR::MidiRegion>,
222 double samples_per_unit,
223 Gdk::Color& basic_color,
224 TimeAxisViewItem::Visibility);
226 void region_resized (ARDOUR::Change);
228 void set_flags (XMLNode *);
231 void reset_width_dependent_items (double pixel_width);
236 void switch_source(boost::shared_ptr<ARDOUR::Source> src);
238 bool canvas_event(GdkEvent* ev);
239 bool note_canvas_event(GdkEvent* ev);
241 void clear_selection_except(ArdourCanvas::CanvasMidiEvent* ev);
242 void clear_selection() { clear_selection_except(NULL); }
243 void update_drag_selection(double last_x, double x, double last_y, double y);
245 double _default_note_length;
247 boost::shared_ptr<ARDOUR::MidiModel> _model;
248 std::vector<ArdourCanvas::CanvasMidiEvent*> _events;
249 ArdourCanvas::CanvasNote** _active_notes;
250 ArdourCanvas::Group* _note_group;
251 ARDOUR::MidiModel::DeltaCommand* _delta_command;
253 MouseState _mouse_state;
256 /// currently selected CanvasMidiEvents
257 typedef std::set<ArdourCanvas::CanvasMidiEvent*> Selection;
258 Selection _selection;
261 * this enables vanilla notes to be marked for selection
262 * they are added to _selection when redisplay_model is called
263 * this is necessary for selecting notes during/after model manipulations
265 std::set< boost::shared_ptr<ARDOUR::Note> > _marked_for_selection;
267 std::vector<NoteResizeData *> _resize_data;
270 #endif /* __gtk_ardour_midi_region_view_h__ */