gtk2_ardour/midi_region_view.cc

   1 /*
   2     Copyright (C) 2001-2006 Paul Davis
   3
   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.
   8
   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.
  13
  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.
  17 */
  18
  19 #include <cmath>
  20 #include <cassert>
  21 #include <algorithm>
  22
  23 #include <gtkmm.h>
  24
  25 #include <gtkmm2ext/gtk_ui.h>
  26
  27 #include <ardour/playlist.h>
  28 #include <ardour/tempo.h>
  29 #include <ardour/midi_region.h>
  30 #include <ardour/midi_source.h>
  31 #include <ardour/midi_diskstream.h>
  32 #include <ardour/midi_events.h>
  33 #include <ardour/midi_model.h>
  34
  35 #include "streamview.h"
  36 #include "midi_region_view.h"
  37 #include "midi_streamview.h"
  38 #include "midi_time_axis.h"
  39 #include "simplerect.h"
  40 #include "simpleline.h"
  41 #include "diamond.h"
  42 #include "public_editor.h"
  43 #include "ghostregion.h"
  44 #include "midi_time_axis.h"
  45 #include "utils.h"
  46 #include "rgb_macros.h"
  47 #include "gui_thread.h"
  48
  49 #include "i18n.h"
  50
  51 using namespace sigc;
  52 using namespace ARDOUR;
  53 using namespace PBD;
  54 using namespace Editing;
  55 using namespace ArdourCanvas;
  56
  57 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
  58                                   Gdk::Color& basic_color)
  59         : RegionView (parent, tv, r, spu, basic_color)
  60         , _active_notes(0)
  61 {
  62 }
  63
  64 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
  65                                   Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
  66         : RegionView (parent, tv, r, spu, basic_color, visibility)
  67         , _active_notes(0)
  68 {
  69 }
  70
  71 void
  72 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
  73 {
  74         // FIXME: Some redundancy here with RegionView::init.  Need to figure out
  75         // where order is important and where it isn't...
  76
  77         // FIXME
  78         RegionView::init(basic_color, /*wfd*/false);
  79
  80         compute_colors (basic_color);
  81
  82         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
  83
  84         set_y_position_and_height (0, trackview.height);
  85
  86         region_muted ();
  87         region_resized (BoundsChanged);
  88         region_locked ();
  89
  90         _region->StateChanged.connect (mem_fun(*this, &MidiRegionView::region_changed));
  91
  92         set_colors ();
  93
  94         if (wfd) {
  95                 midi_region()->midi_source(0)->load_model();
  96                 display_events();
  97         }
  98
  99         group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event));
 100 }
 101
 102 bool
 103 MidiRegionView::canvas_event(GdkEvent* ev)
 104 {
 105         if (trackview.editor.current_mouse_mode() == MouseNote) {
 106                 if (ev->type == GDK_BUTTON_PRESS) {
 107                         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 108                         MidiStreamView* const view = mtv->midi_view();
 109
 110                         const uint8_t note_range = view->highest_note() - view->lowest_note() + 1;
 111                         const double footer_height = name_highlight->property_y2() - name_highlight->property_y1();
 112                         const double roll_height = trackview.height - footer_height;
 113
 114                         double x = ev->button.x;
 115                         double y = ev->button.y;
 116                         get_canvas_group()->w2i(x, y);
 117
 118                         double note = floor((roll_height - y) / roll_height * (double)note_range) + view->lowest_note();
 119                         assert(note >= 0.0);
 120                         assert(note <= 127.0);
 121
 122                         const nframes_t stamp = trackview.editor.pixel_to_frame (x);
 123                         assert(stamp >= 0);
 124                         //assert(stamp <= _region->length());
 125
 126                         const Meter& m = trackview.session().tempo_map().meter_at(stamp);
 127                         const Tempo& t = trackview.session().tempo_map().tempo_at(stamp);
 128                         double dur = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 129
 130                         // Add a 1 beat long note (for now)
 131                         const MidiModel::Note new_note(stamp, dur, (uint8_t)note, 0x40);
 132
 133                         MidiModel::Notes& notes = midi_region()->midi_source(0)->model()->notes();
 134                         MidiModel::Notes::iterator i = upper_bound(notes.begin(), notes.end(), new_note,
 135                                         MidiModel::NoteTimeComparator());
 136                         notes.insert(i, new_note);
 137                         view->update_bounds(new_note.note);
 138
 139                         add_note(new_note);
 140                 }
 141         }
 142
 143         return false;
 144 }
 145
 146
 147 void
 148 MidiRegionView::clear_events()
 149 {
 150         for (std::vector<ArdourCanvas::Item*>::iterator i = _events.begin(); i != _events.end(); ++i)
 151                 delete *i;
 152
 153         _events.clear();
 154 }
 155
 156
 157 void
 158 MidiRegionView::display_events()
 159 {
 160         clear_events();
 161
 162         begin_write();
 163
 164         for (size_t i=0; i < midi_region()->midi_source(0)->model()->n_notes(); ++i)
 165                 add_note(midi_region()->midi_source(0)->model()->note_at(i));
 166
 167         end_write();
 168 }
 169
 170
 171 MidiRegionView::~MidiRegionView ()
 172 {
 173         in_destructor = true;
 174         end_write();
 175
 176         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 177 }
 178
 179 boost::shared_ptr<ARDOUR::MidiRegion>
 180 MidiRegionView::midi_region() const
 181 {
 182         // "Guaranteed" to succeed...
 183         return boost::dynamic_pointer_cast<MidiRegion>(_region);
 184 }
 185
 186 void
 187 MidiRegionView::region_resized (Change what_changed)
 188 {
 189         RegionView::region_resized(what_changed);
 190
 191         if (what_changed & ARDOUR::PositionChanged) {
 192
 193                 display_events();
 194
 195         } else if (what_changed & Change (StartChanged)) {
 196
 197                 //cerr << "MIDI RV START CHANGED" << endl;
 198
 199         } else if (what_changed & Change (LengthChanged)) {
 200
 201                 //cerr << "MIDI RV LENGTH CHANGED" << endl;
 202
 203         }
 204 }
 205
 206 void
 207 MidiRegionView::reset_width_dependent_items (double pixel_width)
 208 {
 209         RegionView::reset_width_dependent_items(pixel_width);
 210         assert(_pixel_width == pixel_width);
 211
 212         display_events();
 213 }
 214
 215 void
 216 MidiRegionView::set_y_position_and_height (double y, double h)
 217 {
 218         RegionView::set_y_position_and_height(y, h - 1);
 219
 220         display_events();
 221
 222         if (name_text) {
 223                 name_text->raise_to_top();
 224         }
 225 }
 226
 227 void
 228 MidiRegionView::show_region_editor ()
 229 {
 230         cerr << "No MIDI region editor." << endl;
 231 }
 232
 233 GhostRegion*
 234 MidiRegionView::add_ghost (AutomationTimeAxisView& atv)
 235 {
 236         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 237         assert(rtv);
 238
 239         double unit_position = _region->position () / samples_per_unit;
 240         GhostRegion* ghost = new GhostRegion (atv, unit_position);
 241
 242         ghost->set_height ();
 243         ghost->set_duration (_region->length() / samples_per_unit);
 244         ghosts.push_back (ghost);
 245
 246         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 247
 248         return ghost;
 249 }
 250
 251
 252 /** Begin tracking note state for successive calls to add_event
 253  */
 254 void
 255 MidiRegionView::begin_write()
 256 {
 257         _active_notes = new ArdourCanvas::SimpleRect*[128];
 258         for (unsigned i=0; i < 128; ++i)
 259                 _active_notes[i] = NULL;
 260 }
 261
 262
 263 /** Destroy note state for add_event
 264  */
 265 void
 266 MidiRegionView::end_write()
 267 {
 268         delete[] _active_notes;
 269         _active_notes = NULL;
 270 }
 271
 272
 273 /** Add a MIDI event.
 274  *
 275  * This is used while recording, and handles displaying still-unresolved notes.
 276  * Displaying an existing model is simpler, and done with add_note.
 277  */
 278 void
 279 MidiRegionView::add_event (const MidiEvent& ev)
 280 {
 281         /*printf("Event, time = %f, size = %zu, data = ", ev.time, ev.size);
 282         for (size_t i=0; i < ev.size; ++i) {
 283                 printf("%X ", ev.buffer[i]);
 284         }
 285         printf("\n\n");*/
 286
 287         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 288         MidiStreamView* const view = mtv->midi_view();
 289         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 290
 291         const uint8_t note_range = view->highest_note() - view->lowest_note() + 1;
 292         const double footer_height = name_highlight->property_y2() - name_highlight->property_y1();
 293         const double pixel_range = (trackview.height - footer_height - 5.0) / (double)note_range;
 294
 295         if (mtv->note_mode() == Note) {
 296                 if ((ev.buffer[0] & 0xF0) == MIDI_CMD_NOTE_ON) {
 297                         const Byte& note = ev.buffer[1];
 298                         const double y1 = trackview.height - (pixel_range * (note - view->lowest_note() + 1))
 299                                 - footer_height - 3.0;
 300
 301                         ArdourCanvas::SimpleRect * ev_rect = new Gnome::Canvas::SimpleRect(*group);
 302                         ev_rect->property_x1() = trackview.editor.frame_to_pixel (
 303                                         (nframes_t)ev.time);
 304                         ev_rect->property_y1() = y1;
 305                         ev_rect->property_x2() = trackview.editor.frame_to_pixel (
 306                                         _region->length());
 307                         ev_rect->property_y2() = y1 + ceil(pixel_range);
 308                         ev_rect->property_outline_color_rgba() = 0xFFFFFFAA;
 309                         /* outline all but right edge */
 310                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 311                         ev_rect->property_fill_color_rgba() = 0xFFFFFF66;
 312
 313                         _events.push_back(ev_rect);
 314                         if (_active_notes)
 315                                 _active_notes[note] = ev_rect;
 316
 317                 } else if ((ev.buffer[0] & 0xF0) == MIDI_CMD_NOTE_OFF) {
 318                         const Byte& note = ev.buffer[1];
 319                         if (_active_notes && _active_notes[note]) {
 320                                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)ev.time);
 321                                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 322                                 _active_notes[note] = NULL;
 323                         }
 324                 }
 325
 326         } else if (mtv->note_mode() == Percussion) {
 327                 const Byte& note = ev.buffer[1];
 328                 const double x = trackview.editor.frame_to_pixel((nframes_t)ev.time);
 329                 const double y = trackview.height - (pixel_range * (note - view->lowest_note() + 1))
 330                         - footer_height - 3.0;
 331
 332                 Diamond* ev_diamond = new Diamond(*group, std::min(pixel_range, 5.0));
 333                 ev_diamond->move(x, y);
 334                 ev_diamond->show();
 335                 ev_diamond->property_outline_color_rgba() = 0xFFFFFFDD;
 336                 ev_diamond->property_fill_color_rgba() = 0xFFFFFF66;
 337                 _events.push_back(ev_diamond);
 338         }
 339 }
 340
 341
 342 /** Extend active notes to rightmost edge of region (if length is changed)
 343  */
 344 void
 345 MidiRegionView::extend_active_notes()
 346 {
 347         if (!_active_notes)
 348                 return;
 349
 350         for (unsigned i=0; i < 128; ++i)
 351                 if (_active_notes[i])
 352                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 353 }
 354
 355
 356 /** Add a MIDI note (with duration).
 357  *
 358  * This does no 'realtime' note resolution, notes from a MidiModel have a
 359  * duration so they can be drawn in full immediately.
 360  */
 361 void
 362 MidiRegionView::add_note (const MidiModel::Note& note)
 363 {
 364         assert(note.start >= 0);
 365         assert(note.start < _region->length());
 366         //assert(note.start + note.duration < _region->length());
 367
 368         /*printf("Event, time = %f, size = %zu, data = ", ev.time, ev.size);
 369         for (size_t i=0; i < ev.size; ++i) {
 370                 printf("%X ", ev.buffer[i]);
 371         }
 372         printf("\n\n");*/
 373
 374         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 375         MidiStreamView* const view = mtv->midi_view();
 376         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 377
 378         const uint8_t note_range = view->highest_note() - view->lowest_note() + 1;
 379         const double footer_height = name_highlight->property_y2() - name_highlight->property_y1();
 380         const double pixel_range = (trackview.height - footer_height - 5.0) / (double)note_range;
 381
 382         if (mtv->note_mode() == Note) {
 383                 const double y1 = trackview.height - (pixel_range * (note.note - view->lowest_note() + 1))
 384                         - footer_height - 3.0;
 385
 386                 ArdourCanvas::SimpleRect * ev_rect = new Gnome::Canvas::SimpleRect(*group);
 387                 ev_rect->property_x1() = trackview.editor.frame_to_pixel((nframes_t)note.start);
 388                 ev_rect->property_y1() = y1;
 389                 ev_rect->property_x2() = trackview.editor.frame_to_pixel((nframes_t)(note.start + note.duration));
 390                 ev_rect->property_y2() = y1 + ceil(pixel_range);
 391
 392                 ev_rect->property_fill_color_rgba() = 0xFFFFFF66;
 393                 ev_rect->property_outline_color_rgba() = 0xFFFFFFAA;
 394                 ev_rect->property_outline_what() = (guint32) 0xF; // all edges
 395
 396                 ev_rect->show();
 397                 _events.push_back(ev_rect);
 398
 399         } else if (mtv->note_mode() == Percussion) {
 400                 const double x = trackview.editor.frame_to_pixel((nframes_t)note.start);
 401                 const double y = trackview.height - (pixel_range * (note.note - view->lowest_note() + 1))
 402                         - footer_height - 3.0;
 403
 404                 Diamond* ev_diamond = new Diamond(*group, std::min(pixel_range, 5.0));
 405                 ev_diamond->move(x, y);
 406                 ev_diamond->show();
 407                 ev_diamond->property_outline_color_rgba() = 0xFFFFFFDD;
 408                 ev_diamond->property_fill_color_rgba() = 0xFFFFFF66;
 409                 _events.push_back(ev_diamond);
 410         }
 411 }
 412
 413