gtk2_ardour/midi_region_view.cc

   1 /*
   2     Copyright (C) 2001-2007 Paul Davis
   3     Author: Dave Robillard
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include <cmath>
  21 #include <cassert>
  22 #include <algorithm>
  23
  24 #include <gtkmm.h>
  25
  26 #include <gtkmm2ext/gtk_ui.h>
  27
  28 #include <sigc++/signal.h>
  29
  30 #include <ardour/playlist.h>
  31 #include <ardour/tempo.h>
  32 #include <ardour/midi_region.h>
  33 #include <ardour/midi_source.h>
  34 #include <ardour/midi_diskstream.h>
  35 #include <ardour/midi_events.h>
  36 #include <ardour/midi_model.h>
  37
  38 #include "streamview.h"
  39 #include "midi_region_view.h"
  40 #include "midi_streamview.h"
  41 #include "midi_time_axis.h"
  42 #include "simplerect.h"
  43 #include "simpleline.h"
  44 #include "diamond.h"
  45 #include "public_editor.h"
  46 #include "ghostregion.h"
  47 #include "midi_time_axis.h"
  48 #include "utils.h"
  49 #include "rgb_macros.h"
  50 #include "gui_thread.h"
  51
  52 #include "i18n.h"
  53
  54 using namespace sigc;
  55 using namespace ARDOUR;
  56 using namespace PBD;
  57 using namespace Editing;
  58 using namespace ArdourCanvas;
  59
  60 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
  61                                   Gdk::Color& basic_color)
  62         : RegionView (parent, tv, r, spu, basic_color)
  63         , _active_notes(0)
  64 {
  65 }
  66
  67 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu,
  68                                   Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
  69         : RegionView (parent, tv, r, spu, basic_color, visibility)
  70         , _active_notes(0)
  71 {
  72 }
  73
  74 void
  75 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
  76 {
  77         // FIXME: Some redundancy here with RegionView::init.  Need to figure out
  78         // where order is important and where it isn't...
  79
  80         // FIXME
  81         RegionView::init(basic_color, /*wfd*/false);
  82
  83         compute_colors (basic_color);
  84
  85         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
  86
  87         set_y_position_and_height (0, trackview.height);
  88
  89         region_muted ();
  90         region_resized (BoundsChanged);
  91         region_locked ();
  92
  93         _region->StateChanged.connect (mem_fun(*this, &MidiRegionView::region_changed));
  94
  95         set_colors ();
  96
  97         if (wfd) {
  98                 midi_region()->midi_source(0)->load_model();
  99                 display_events();
 100         }
 101
 102         midi_region()->midi_source(0)->model()->ContentsChanged.connect(sigc::mem_fun(
 103                         this, &MidiRegionView::redisplay_model));
 104
 105         group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event));
 106 }
 107
 108 bool
 109 MidiRegionView::canvas_event(GdkEvent* ev)
 110 {
 111         if (trackview.editor.current_mouse_mode() == MouseNote) {
 112                 if (ev->type == GDK_BUTTON_PRESS) {
 113                         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 114                         MidiStreamView* const view = mtv->midi_view();
 115
 116                         const uint8_t note_range = view->highest_note() - view->lowest_note() + 1;
 117                         const double footer_height = name_highlight->property_y2() - name_highlight->property_y1();
 118                         const double roll_height = trackview.height - footer_height;
 119
 120                         double x = ev->button.x;
 121                         double y = ev->button.y;
 122                         get_canvas_group()->w2i(x, y);
 123
 124                         double note = floor((roll_height - y) / roll_height * (double)note_range) + view->lowest_note();
 125                         assert(note >= 0.0);
 126                         assert(note <= 127.0);
 127
 128                         const nframes_t stamp = trackview.editor.pixel_to_frame (x);
 129                         assert(stamp >= 0);
 130                         //assert(stamp <= _region->length());
 131
 132                         const Meter& m = trackview.session().tempo_map().meter_at(stamp);
 133                         const Tempo& t = trackview.session().tempo_map().tempo_at(stamp);
 134                         double dur = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 135
 136                         MidiModel* model = midi_region()->midi_source(0)->model();
 137
 138                         // Add a 1 beat long note (for now)
 139                         const MidiModel::Note new_note(stamp, dur, (uint8_t)note, 0x40);
 140
 141                         model->begin_command();
 142                         model->add_note(new_note);
 143                         model->finish_command();
 144
 145                         view->update_bounds(new_note.note);
 146
 147                         add_note(new_note);
 148                 }
 149         }
 150
 151         return false;
 152 }
 153
 154
 155 void
 156 MidiRegionView::redisplay_model()
 157 {
 158         clear_events();
 159         display_events();
 160 }
 161
 162
 163 void
 164 MidiRegionView::clear_events()
 165 {
 166         for (std::vector<ArdourCanvas::Item*>::iterator i = _events.begin(); i != _events.end(); ++i)
 167                 delete *i;
 168
 169         _events.clear();
 170 }
 171
 172
 173 void
 174 MidiRegionView::display_events()
 175 {
 176         clear_events();
 177
 178         begin_write();
 179
 180         for (size_t i=0; i < midi_region()->midi_source(0)->model()->n_notes(); ++i)
 181                 add_note(midi_region()->midi_source(0)->model()->note_at(i));
 182
 183         end_write();
 184 }
 185
 186
 187 MidiRegionView::~MidiRegionView ()
 188 {
 189         in_destructor = true;
 190         end_write();
 191
 192         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 193 }
 194
 195 boost::shared_ptr<ARDOUR::MidiRegion>
 196 MidiRegionView::midi_region() const
 197 {
 198         // "Guaranteed" to succeed...
 199         return boost::dynamic_pointer_cast<MidiRegion>(_region);
 200 }
 201
 202 void
 203 MidiRegionView::region_resized (Change what_changed)
 204 {
 205         RegionView::region_resized(what_changed);
 206
 207         if (what_changed & ARDOUR::PositionChanged) {
 208
 209                 display_events();
 210
 211         } else if (what_changed & Change (StartChanged)) {
 212
 213                 //cerr << "MIDI RV START CHANGED" << endl;
 214
 215         } else if (what_changed & Change (LengthChanged)) {
 216
 217                 //cerr << "MIDI RV LENGTH CHANGED" << endl;
 218
 219         }
 220 }
 221
 222 void
 223 MidiRegionView::reset_width_dependent_items (double pixel_width)
 224 {
 225         RegionView::reset_width_dependent_items(pixel_width);
 226         assert(_pixel_width == pixel_width);
 227
 228         display_events();
 229 }
 230
 231 void
 232 MidiRegionView::set_y_position_and_height (double y, double h)
 233 {
 234         RegionView::set_y_position_and_height(y, h - 1);
 235
 236         display_events();
 237
 238         if (name_text) {
 239                 name_text->raise_to_top();
 240         }
 241 }
 242
 243 void
 244 MidiRegionView::show_region_editor ()
 245 {
 246         cerr << "No MIDI region editor." << endl;
 247 }
 248
 249 GhostRegion*
 250 MidiRegionView::add_ghost (AutomationTimeAxisView& atv)
 251 {
 252         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 253         assert(rtv);
 254
 255         double unit_position = _region->position () / samples_per_unit;
 256         GhostRegion* ghost = new GhostRegion (atv, unit_position);
 257
 258         ghost->set_height ();
 259         ghost->set_duration (_region->length() / samples_per_unit);
 260         ghosts.push_back (ghost);
 261
 262         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 263
 264         return ghost;
 265 }
 266
 267
 268 /** Begin tracking note state for successive calls to add_event
 269  */
 270 void
 271 MidiRegionView::begin_write()
 272 {
 273         _active_notes = new ArdourCanvas::SimpleRect*[128];
 274         for (unsigned i=0; i < 128; ++i)
 275                 _active_notes[i] = NULL;
 276 }
 277
 278
 279 /** Destroy note state for add_event
 280  */
 281 void
 282 MidiRegionView::end_write()
 283 {
 284         delete[] _active_notes;
 285         _active_notes = NULL;
 286 }
 287
 288
 289 /** Add a MIDI event.
 290  *
 291  * This is used while recording, and handles displaying still-unresolved notes.
 292  * Displaying an existing model is simpler, and done with add_note.
 293  */
 294 void
 295 MidiRegionView::add_event (const MidiEvent& ev)
 296 {
 297         /*printf("Event, time = %f, size = %zu, data = ", ev.time, ev.size);
 298         for (size_t i=0; i < ev.size; ++i) {
 299                 printf("%X ", ev.buffer[i]);
 300         }
 301         printf("\n\n");*/
 302
 303         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 304         MidiStreamView* const view = mtv->midi_view();
 305         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 306
 307         const uint8_t note_range = view->highest_note() - view->lowest_note() + 1;
 308         const double footer_height = name_highlight->property_y2() - name_highlight->property_y1();
 309         const double pixel_range = (trackview.height - footer_height - 5.0) / (double)note_range;
 310
 311         if (mtv->note_mode() == Note) {
 312                 if ((ev.buffer[0] & 0xF0) == MIDI_CMD_NOTE_ON) {
 313                         const Byte& note = ev.buffer[1];
 314                         const double y1 = trackview.height - (pixel_range * (note - view->lowest_note() + 1))
 315                                 - footer_height - 3.0;
 316
 317                         ArdourCanvas::SimpleRect * ev_rect = new Gnome::Canvas::SimpleRect(*group);
 318                         ev_rect->property_x1() = trackview.editor.frame_to_pixel (
 319                                         (nframes_t)ev.time);
 320                         ev_rect->property_y1() = y1;
 321                         ev_rect->property_x2() = trackview.editor.frame_to_pixel (
 322                                         _region->length());
 323                         ev_rect->property_y2() = y1 + ceil(pixel_range);
 324                         ev_rect->property_outline_color_rgba() = 0xFFFFFFAA;
 325                         /* outline all but right edge */
 326                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 327                         ev_rect->property_fill_color_rgba() = 0xFFFFFF66;
 328
 329                         _events.push_back(ev_rect);
 330                         if (_active_notes)
 331                                 _active_notes[note] = ev_rect;
 332
 333                 } else if ((ev.buffer[0] & 0xF0) == MIDI_CMD_NOTE_OFF) {
 334                         const Byte& note = ev.buffer[1];
 335                         if (_active_notes && _active_notes[note]) {
 336                                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)ev.time);
 337                                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 338                                 _active_notes[note] = NULL;
 339                         }
 340                 }
 341
 342         } else if (mtv->note_mode() == Percussion) {
 343                 const Byte& note = ev.buffer[1];
 344                 const double x = trackview.editor.frame_to_pixel((nframes_t)ev.time);
 345                 const double y = trackview.height - (pixel_range * (note - view->lowest_note() + 1))
 346                         - footer_height - 3.0;
 347
 348                 Diamond* ev_diamond = new Diamond(*group, std::min(pixel_range, 5.0));
 349                 ev_diamond->move(x, y);
 350                 ev_diamond->show();
 351                 ev_diamond->property_outline_color_rgba() = 0xFFFFFFDD;
 352                 ev_diamond->property_fill_color_rgba() = 0xFFFFFF66;
 353                 _events.push_back(ev_diamond);
 354         }
 355 }
 356
 357
 358 /** Extend active notes to rightmost edge of region (if length is changed)
 359  */
 360 void
 361 MidiRegionView::extend_active_notes()
 362 {
 363         if (!_active_notes)
 364                 return;
 365
 366         for (unsigned i=0; i < 128; ++i)
 367                 if (_active_notes[i])
 368                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 369 }
 370
 371
 372 /** Add a MIDI note (with duration).
 373  *
 374  * This does no 'realtime' note resolution, notes from a MidiModel have a
 375  * duration so they can be drawn in full immediately.
 376  */
 377 void
 378 MidiRegionView::add_note (const MidiModel::Note& note)
 379 {
 380         assert(note.start >= 0);
 381         assert(note.start < _region->length());
 382         //assert(note.start + note.duration < _region->length());
 383
 384         /*printf("Event, time = %f, size = %zu, data = ", ev.time, ev.size);
 385         for (size_t i=0; i < ev.size; ++i) {
 386                 printf("%X ", ev.buffer[i]);
 387         }
 388         printf("\n\n");*/
 389
 390         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 391         MidiStreamView* const view = mtv->midi_view();
 392         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 393
 394         const uint8_t note_range = view->highest_note() - view->lowest_note() + 1;
 395         const double footer_height = name_highlight->property_y2() - name_highlight->property_y1();
 396         const double pixel_range = (trackview.height - footer_height - 5.0) / (double)note_range;
 397
 398         if (mtv->note_mode() == Note) {
 399                 const double y1 = trackview.height - (pixel_range * (note.note - view->lowest_note() + 1))
 400                         - footer_height - 3.0;
 401
 402                 ArdourCanvas::SimpleRect * ev_rect = new Gnome::Canvas::SimpleRect(*group);
 403                 ev_rect->property_x1() = trackview.editor.frame_to_pixel((nframes_t)note.start);
 404                 ev_rect->property_y1() = y1;
 405                 ev_rect->property_x2() = trackview.editor.frame_to_pixel((nframes_t)(note.start + note.duration));
 406                 ev_rect->property_y2() = y1 + ceil(pixel_range);
 407
 408                 ev_rect->property_fill_color_rgba() = 0xFFFFFF66;
 409                 ev_rect->property_outline_color_rgba() = 0xFFFFFFAA;
 410                 ev_rect->property_outline_what() = (guint32) 0xF; // all edges
 411
 412                 ev_rect->show();
 413                 _events.push_back(ev_rect);
 414
 415         } else if (mtv->note_mode() == Percussion) {
 416                 const double x = trackview.editor.frame_to_pixel((nframes_t)note.start);
 417                 const double y = trackview.height - (pixel_range * (note.note - view->lowest_note() + 1))
 418                         - footer_height - 3.0;
 419
 420                 Diamond* ev_diamond = new Diamond(*group, std::min(pixel_range, 5.0));
 421                 ev_diamond->move(x, y);
 422                 ev_diamond->show();
 423                 ev_diamond->property_outline_color_rgba() = 0xFFFFFFDD;
 424                 ev_diamond->property_fill_color_rgba() = 0xFFFFFF66;
 425                 _events.push_back(ev_diamond);
 426         }
 427 }
 428
 429