2 Copyright (C) 2012 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.
20 #include "ardour/midi_track.h"
21 #include "ardour/midi_region.h"
22 #include "ardour/tempo.h"
23 #include "ardour/types.h"
25 #include "gui_thread.h"
26 #include "midi_region_view.h"
27 #include "public_editor.h"
28 #include "step_editor.h"
29 #include "step_entry.h"
31 using namespace ARDOUR;
35 StepEditor::StepEditor (PublicEditor& e, boost::shared_ptr<MidiTrack> t, MidiTimeAxisView& mtv)
41 step_edit_insert_position = 0;
42 _step_edit_triplet_countdown = 0;
43 _step_edit_within_chord = 0;
44 _step_edit_chord_duration = Evoral::Beats();
45 step_edit_region_view = 0;
47 _track->PlaylistChanged.connect (*this, invalidator (*this),
48 boost::bind (&StepEditor::playlist_changed, this),
53 StepEditor::~StepEditor()
59 StepEditor::start_step_editing ()
61 _step_edit_triplet_countdown = 0;
62 _step_edit_within_chord = 0;
63 _step_edit_chord_duration = Evoral::Beats();
64 step_edit_region.reset ();
65 step_edit_region_view = 0;
66 last_added_pitch = -1;
67 last_added_end = Evoral::Beats();
69 resync_step_edit_position ();
70 prepare_step_edit_region ();
71 reset_step_edit_beat_pos ();
73 assert (step_edit_region);
74 assert (step_edit_region_view);
76 if (step_editor == 0) {
77 step_editor = new StepEntry (*this);
78 step_editor->signal_delete_event().connect (sigc::mem_fun (*this, &StepEditor::step_editor_hidden));
79 step_editor->signal_hide().connect (sigc::mem_fun (*this, &StepEditor::step_editor_hide));
82 step_edit_region_view->show_step_edit_cursor (step_edit_beat_pos);
83 step_edit_region_view->set_step_edit_cursor_width (step_editor->note_length());
85 step_editor->present ();
89 StepEditor::resync_step_edit_position ()
91 step_edit_insert_position = _editor.get_preferred_edit_position (Editing::EDIT_IGNORE_NONE, false, true);
95 StepEditor::resync_step_edit_to_edit_point ()
97 resync_step_edit_position ();
98 if (step_edit_region) {
99 reset_step_edit_beat_pos ();
104 StepEditor::prepare_step_edit_region ()
106 boost::shared_ptr<Region> r = _track->playlist()->top_region_at (step_edit_insert_position);
109 step_edit_region = boost::dynamic_pointer_cast<MidiRegion>(r);
112 if (step_edit_region) {
113 RegionView* rv = _mtv.midi_view()->find_view (step_edit_region);
114 step_edit_region_view = dynamic_cast<MidiRegionView*> (rv);
118 const Meter& m = _mtv.session()->tempo_map().meter_at_frame (step_edit_insert_position);
119 double baf = max (0.0, _mtv.session()->tempo_map().beat_at_frame (step_edit_insert_position));
120 double next_bar_in_beats = baf + m.divisions_per_bar();
121 framecnt_t next_bar_pos = _mtv.session()->tempo_map().frame_at_beat (next_bar_in_beats);
122 framecnt_t len = next_bar_pos - step_edit_insert_position;
124 step_edit_region = _mtv.add_region (step_edit_insert_position, len, true);
126 RegionView* rv = _mtv.midi_view()->find_view (step_edit_region);
127 step_edit_region_view = dynamic_cast<MidiRegionView*>(rv);
133 StepEditor::reset_step_edit_beat_pos ()
135 assert (step_edit_region);
136 assert (step_edit_region_view);
138 framecnt_t frames_from_start = _editor.get_preferred_edit_position() - step_edit_region->position();
140 if (frames_from_start < 0) {
141 /* this can happen with snap enabled, and the edit point == Playhead. we snap the
142 position of the new region, and it can end up after the edit point.
144 frames_from_start = 0;
147 step_edit_beat_pos = step_edit_region_view->region_frames_to_region_beats (frames_from_start);
148 step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
152 StepEditor::step_editor_hidden (GdkEventAny*)
155 return true; // XXX remember position ?!
159 StepEditor::step_editor_hide ()
161 /* everything else will follow the change in the model */
162 _track->set_step_editing (false);
166 StepEditor::stop_step_editing ()
169 step_editor->hide ();
172 if (step_edit_region_view) {
173 step_edit_region_view->hide_step_edit_cursor();
176 step_edit_region.reset ();
180 StepEditor::check_step_edit ()
182 MidiRingBuffer<framepos_t>& incoming (_track->step_edit_ring_buffer());
184 uint32_t bufsize = 32;
186 buf = new uint8_t[bufsize];
188 while (incoming.read_space()) {
190 Evoral::EventType type;
193 incoming.read_prefix (&time, &type, &size);
195 if (size > bufsize) {
198 buf = new uint8_t[bufsize];
201 incoming.read_contents (size, buf);
203 if ((buf[0] & 0xf0) == MIDI_CMD_NOTE_ON) {
204 step_add_note (buf[0] & 0xf, buf[1], buf[2], Evoral::Beats());
210 StepEditor::step_add_bank_change (uint8_t /*channel*/, uint8_t /*bank*/)
216 StepEditor::step_add_program_change (uint8_t /*channel*/, uint8_t /*program*/)
222 StepEditor::step_edit_sustain (Evoral::Beats beats)
224 if (step_edit_region_view) {
225 step_edit_region_view->step_sustain (beats);
230 StepEditor::move_step_edit_beat_pos (Evoral::Beats beats)
232 if (!step_edit_region_view) {
236 step_edit_beat_pos = min (step_edit_beat_pos + beats,
237 step_edit_region_view->region_frames_to_region_beats (step_edit_region->length()));
238 } else if (beats < 0.0) {
239 if (-beats < step_edit_beat_pos) {
240 step_edit_beat_pos += beats; // its negative, remember
242 step_edit_beat_pos = Evoral::Beats();
245 step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
249 StepEditor::step_add_note (uint8_t channel, uint8_t pitch, uint8_t velocity, Evoral::Beats beat_duration)
251 /* do these things in case undo removed the step edit region
253 if (!step_edit_region) {
254 resync_step_edit_position ();
255 prepare_step_edit_region ();
256 reset_step_edit_beat_pos ();
257 step_edit_region_view->show_step_edit_cursor (step_edit_beat_pos);
258 step_edit_region_view->set_step_edit_cursor_width (step_editor->note_length());
261 assert (step_edit_region);
262 assert (step_edit_region_view);
264 if (beat_duration == 0.0 && step_editor) {
265 beat_duration = step_editor->note_length();
266 } else if (beat_duration == 0.0) {
268 beat_duration = _editor.get_grid_type_as_beats (success, step_edit_insert_position);
275 MidiStreamView* msv = _mtv.midi_view();
277 /* make sure its visible on the vertical axis */
279 if (pitch < msv->lowest_note() || pitch > msv->highest_note()) {
280 msv->update_note_range (pitch);
281 msv->set_note_range (MidiStreamView::ContentsRange);
284 /* make sure its visible on the horizontal axis */
286 framepos_t fpos = step_edit_region_view->region_beats_to_absolute_frames (step_edit_beat_pos + beat_duration);
288 if (fpos >= (_editor.leftmost_sample() + _editor.current_page_samples())) {
289 _editor.reset_x_origin (fpos - (_editor.current_page_samples()/4));
292 Evoral::Beats at = step_edit_beat_pos;
293 Evoral::Beats len = beat_duration;
295 if ((last_added_pitch >= 0) && (pitch == last_added_pitch) && (last_added_end == step_edit_beat_pos)) {
297 /* avoid any apparent note overlap - move the start of this note
298 up by 1 tick from where the last note ended
301 at += Evoral::Beats::ticks(1);
302 len -= Evoral::Beats::ticks(1);
305 step_edit_region_view->step_add_note (channel, pitch, velocity, at, len);
307 last_added_pitch = pitch;
308 last_added_end = at+len;
310 if (_step_edit_triplet_countdown > 0) {
311 _step_edit_triplet_countdown--;
313 if (_step_edit_triplet_countdown == 0) {
314 _step_edit_triplet_countdown = 3;
318 if (!_step_edit_within_chord) {
319 step_edit_beat_pos += beat_duration;
320 step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
322 step_edit_beat_pos += Evoral::Beats::ticks(1); // tiny, but no longer overlapping
323 _step_edit_chord_duration = max (_step_edit_chord_duration, beat_duration);
326 step_edit_region_view->set_step_edit_cursor_width (step_editor->note_length());
332 StepEditor::set_step_edit_cursor_width (Evoral::Beats beats)
334 if (step_edit_region_view) {
335 step_edit_region_view->set_step_edit_cursor_width (beats);
340 StepEditor::step_edit_within_triplet() const
342 return _step_edit_triplet_countdown > 0;
346 StepEditor::step_edit_within_chord() const
348 return _step_edit_within_chord;
352 StepEditor::step_edit_toggle_triplet ()
354 if (_step_edit_triplet_countdown == 0) {
355 _step_edit_within_chord = false;
356 _step_edit_triplet_countdown = 3;
358 _step_edit_triplet_countdown = 0;
363 StepEditor::step_edit_toggle_chord ()
365 if (_step_edit_within_chord) {
366 _step_edit_within_chord = false;
367 if (step_edit_region_view) {
368 step_edit_beat_pos += _step_edit_chord_duration;
369 step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
372 _step_edit_triplet_countdown = 0;
373 _step_edit_within_chord = true;
378 StepEditor::step_edit_rest (Evoral::Beats beats)
383 beats = _editor.get_grid_type_as_beats (success, step_edit_insert_position);
388 if (success && step_edit_region_view) {
389 step_edit_beat_pos += beats;
390 step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
395 StepEditor::step_edit_beat_sync ()
397 step_edit_beat_pos = step_edit_beat_pos.round_up_to_beat();
398 if (step_edit_region_view) {
399 step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
404 StepEditor::step_edit_bar_sync ()
406 Session* _session = _mtv.session ();
408 if (!_session || !step_edit_region_view || !step_edit_region) {
412 framepos_t fpos = step_edit_region_view->region_beats_to_absolute_frames (step_edit_beat_pos);
413 fpos = _session->tempo_map().round_to_bar (fpos, RoundUpAlways).frame;
414 step_edit_beat_pos = step_edit_region_view->region_frames_to_region_beats (fpos - step_edit_region->position()).round_up_to_beat();
415 step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos);
419 StepEditor::playlist_changed ()
421 step_edit_region_connection.disconnect ();
422 _track->playlist()->RegionRemoved.connect (step_edit_region_connection, invalidator (*this),
423 boost::bind (&StepEditor::region_removed, this, _1),
428 StepEditor::region_removed (boost::weak_ptr<Region> wr)
430 boost::shared_ptr<Region> r (wr.lock());
436 if (step_edit_region == r) {
437 step_edit_region.reset();
438 step_edit_region_view = 0;
439 // force a recompute of the insert position
440 step_edit_beat_pos = Evoral::Beats(-1);
445 StepEditor::name() const
447 return _track->name();