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_model.h>
  36 #include <ardour/midi_patch_manager.h>
  37
  38 #include <evoral/Parameter.hpp>
  39 #include <evoral/Control.hpp>
  40
  41 #include "streamview.h"
  42 #include "midi_region_view.h"
  43 #include "midi_streamview.h"
  44 #include "midi_time_axis.h"
  45 #include "simpleline.h"
  46 #include "canvas-hit.h"
  47 #include "canvas-note.h"
  48 #include "canvas-program-change.h"
  49 #include "public_editor.h"
  50 #include "ghostregion.h"
  51 #include "midi_time_axis.h"
  52 #include "automation_time_axis.h"
  53 #include "automation_region_view.h"
  54 #include "utils.h"
  55 #include "midi_util.h"
  56 #include "gui_thread.h"
  57 #include "keyboard.h"
  58
  59 #include "i18n.h"
  60
  61 using namespace sigc;
  62 using namespace ARDOUR;
  63 using namespace PBD;
  64 using namespace Editing;
  65 using namespace ArdourCanvas;
  66
  67 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color)
  68         : RegionView (parent, tv, r, spu, basic_color)
  69         , _force_channel(-1)
  70         , _last_channel_selection(0xFFFF)
  71         , _default_note_length(0.0)
  72         , _current_range_min(0)
  73         , _current_range_max(0)
  74         , _model_name(string())
  75         , _custom_device_mode(string())
  76         , _active_notes(0)
  77         , _note_group(new ArdourCanvas::Group(*parent))
  78         , _delta_command(NULL)
  79         , _mouse_state(None)
  80         , _pressed_button(0)
  81 {
  82         _note_group->raise_to_top();
  83 }
  84
  85 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
  86         : RegionView (parent, tv, r, spu, basic_color, false, visibility)
  87         , _force_channel(-1)
  88         , _last_channel_selection(0xFFFF)
  89         , _default_note_length(0.0)
  90         , _model_name(string())
  91         , _custom_device_mode(string())
  92         , _active_notes(0)
  93         , _note_group(new ArdourCanvas::Group(*parent))
  94         , _delta_command(NULL)
  95         , _mouse_state(None)
  96         , _pressed_button(0)
  97
  98 {
  99         _note_group->raise_to_top();
 100 }
 101
 102
 103 MidiRegionView::MidiRegionView (const MidiRegionView& other)
 104         : RegionView (other)
 105         , _force_channel(-1)
 106         , _last_channel_selection(0xFFFF)
 107         , _default_note_length(0.0)
 108         , _model_name(string())
 109         , _custom_device_mode(string())
 110         , _active_notes(0)
 111         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 112         , _delta_command(NULL)
 113         , _mouse_state(None)
 114         , _pressed_button(0)
 115 {
 116         Gdk::Color c;
 117         int r,g,b,a;
 118
 119         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 120         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 121
 122         init (c, false);
 123 }
 124
 125 MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<MidiRegion> other_region)
 126         : RegionView (other, boost::shared_ptr<Region> (other_region))
 127         , _force_channel(-1)
 128         , _last_channel_selection(0xFFFF)
 129         , _default_note_length(0.0)
 130         , _model_name(string())
 131         , _custom_device_mode(string())
 132         , _active_notes(0)
 133         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 134         , _delta_command(NULL)
 135         , _mouse_state(None)
 136         , _pressed_button(0)
 137 {
 138         Gdk::Color c;
 139         int r,g,b,a;
 140
 141         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 142         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 143
 144         init (c, true);
 145 }
 146
 147 void
 148 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
 149 {
 150         if (wfd) {
 151                 midi_region()->midi_source(0)->load_model();
 152         }
 153
 154         const Meter& m = trackview.session().tempo_map().meter_at(_region->position());
 155         const Tempo& t = trackview.session().tempo_map().tempo_at(_region->position());
 156         _default_note_length = m.frames_per_bar(t, trackview.session().frame_rate())
 157                         / m.beats_per_bar();
 158
 159         _model = midi_region()->midi_source(0)->model();
 160         _enable_display = false;
 161
 162         RegionView::init (basic_color, false);
 163
 164         compute_colors (basic_color);
 165
 166         set_height (trackview.current_height());
 167
 168         region_muted ();
 169         region_sync_changed ();
 170         region_resized (BoundsChanged);
 171         region_locked ();
 172
 173         reset_width_dependent_items (_pixel_width);
 174         //reset_width_dependent_items ((double) _region->length() / samples_per_unit);
 175
 176         set_colors ();
 177
 178         _enable_display = true;
 179         if (_model) {
 180                 if (wfd) {
 181                         redisplay_model();
 182                 }
 183                 _model->ContentsChanged.connect(sigc::mem_fun(this, &MidiRegionView::redisplay_model));
 184         }
 185
 186         group->raise_to_top();
 187         group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event), false);
 188
 189         midi_view()->signal_channel_mode_changed().connect(
 190                         mem_fun(this, &MidiRegionView::midi_channel_mode_changed));
 191
 192         midi_view()->signal_midi_patch_settings_changed().connect(
 193                         mem_fun(this, &MidiRegionView::midi_patch_settings_changed));
 194 }
 195
 196 bool
 197 MidiRegionView::canvas_event(GdkEvent* ev)
 198 {
 199         static bool delete_mod = false;
 200         static Editing::MidiEditMode original_mode;
 201
 202         static double drag_start_x, drag_start_y;
 203         static double last_x, last_y;
 204         double event_x, event_y;
 205         nframes64_t event_frame = 0;
 206
 207         static ArdourCanvas::SimpleRect* drag_rect = NULL;
 208
 209         if (trackview.editor().current_mouse_mode() != MouseNote)
 210                 return false;
 211
 212         // Mmmm, spaghetti
 213
 214         switch (ev->type) {
 215         case GDK_KEY_PRESS:
 216                 if (ev->key.keyval == GDK_Delete && !delete_mod) {
 217                         delete_mod = true;
 218                         original_mode = trackview.editor().current_midi_edit_mode();
 219                         trackview.editor().set_midi_edit_mode(MidiEditErase);
 220                         start_delta_command(_("erase notes"));
 221                         _mouse_state = EraseTouchDragging;
 222                         return true;
 223                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 224                         _mouse_state = SelectTouchDragging;
 225                         return true;
 226                 } else if (ev->key.keyval == GDK_Escape) {
 227                         clear_selection();
 228                         _mouse_state = None;
 229                 }
 230                 return false;
 231
 232         case GDK_KEY_RELEASE:
 233                 if (ev->key.keyval == GDK_Delete) {
 234                         if (_mouse_state == EraseTouchDragging) {
 235                                 delete_selection();
 236                                 apply_command();
 237                         }
 238                         if (delete_mod) {
 239                                 trackview.editor().set_midi_edit_mode(original_mode);
 240                                 _mouse_state = None;
 241                                 delete_mod = false;
 242                         }
 243                         return true;
 244                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 245                         _mouse_state = None;
 246                         return true;
 247                 }
 248                 return false;
 249
 250         case GDK_BUTTON_PRESS:
 251                 if (_mouse_state != SelectTouchDragging &&
 252                         _mouse_state != EraseTouchDragging &&
 253                         ev->button.button == 1) {
 254                         _pressed_button = ev->button.button;
 255                         _mouse_state = Pressed;
 256                         return true;
 257                 }
 258                 _pressed_button = ev->button.button;
 259                 return true;
 260
 261         case GDK_2BUTTON_PRESS:
 262                 return true;
 263
 264         case GDK_ENTER_NOTIFY:
 265                 /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 266                 Keyboard::magic_widget_grab_focus();
 267                 group->grab_focus();
 268                 break;
 269
 270         case GDK_MOTION_NOTIFY:
 271                 event_x = ev->motion.x;
 272                 event_y = ev->motion.y;
 273                 group->w2i(event_x, event_y);
 274
 275                 // convert event_x to global frame
 276                 event_frame = trackview.editor().pixel_to_frame(event_x) + _region->position();
 277                 trackview.editor().snap_to(event_frame);
 278                 // convert event_frame back to local coordinates relative to position
 279                 event_frame -= _region->position();
 280
 281                 switch (_mouse_state) {
 282                 case Pressed: // Drag start
 283
 284                         // Select drag start
 285                         if (_pressed_button == 1 && trackview.editor().current_midi_edit_mode() == MidiEditSelect) {
 286                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 287                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 288                                 last_x = event_x;
 289                                 last_y = event_y;
 290                                 drag_start_x = event_x;
 291                                 drag_start_y = event_y;
 292
 293                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 294                                 drag_rect->property_x1() = event_x;
 295                                 drag_rect->property_y1() = event_y;
 296                                 drag_rect->property_x2() = event_x;
 297                                 drag_rect->property_y2() = event_y;
 298                                 drag_rect->property_outline_what() = 0xFF;
 299                                 drag_rect->property_outline_color_rgba()
 300                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 301                                 drag_rect->property_fill_color_rgba()
 302                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 303
 304                                 _mouse_state = SelectRectDragging;
 305                                 return true;
 306
 307                         // Add note drag start
 308                         } else if (trackview.editor().current_midi_edit_mode() == MidiEditPencil) {
 309                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 310                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 311                                 last_x = event_x;
 312                                 last_y = event_y;
 313                                 drag_start_x = event_x;
 314                                 drag_start_y = event_y;
 315
 316                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 317                                 drag_rect->property_x1() = trackview.editor().frame_to_pixel(event_frame);
 318
 319                                 drag_rect->property_y1() = midi_stream_view()->note_to_y(midi_stream_view()->y_to_note(event_y));
 320                                 drag_rect->property_x2() = event_x;
 321                                 drag_rect->property_y2() = drag_rect->property_y1() + floor(midi_stream_view()->note_height());
 322                                 drag_rect->property_outline_what() = 0xFF;
 323                                 drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 324
 325                                 drag_rect->property_fill_color_rgba() = 0xFFFFFF66;
 326
 327                                 _mouse_state = AddDragging;
 328                                 return true;
 329                         }
 330
 331                         return false;
 332
 333                 case SelectRectDragging: // Select drag motion
 334                 case AddDragging: // Add note drag motion
 335                         if (ev->motion.is_hint) {
 336                                 int t_x;
 337                                 int t_y;
 338                                 GdkModifierType state;
 339                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 340                                 event_x = t_x;
 341                                 event_y = t_y;
 342                         }
 343
 344                         if (_mouse_state == AddDragging)
 345                                 event_x = trackview.editor().frame_to_pixel(event_frame);
 346
 347                         if (drag_rect) {
 348                                 if (event_x > drag_start_x)
 349                                         drag_rect->property_x2() = event_x;
 350                                 else
 351                                         drag_rect->property_x1() = event_x;
 352                         }
 353
 354                         if (drag_rect && _mouse_state == SelectRectDragging) {
 355                                 if (event_y > drag_start_y)
 356                                         drag_rect->property_y2() = event_y;
 357                                 else
 358                                         drag_rect->property_y1() = event_y;
 359
 360                                 update_drag_selection(drag_start_x, event_x, drag_start_y, event_y);
 361                         }
 362
 363                         last_x = event_x;
 364                         last_y = event_y;
 365
 366                 case EraseTouchDragging:
 367                 case SelectTouchDragging:
 368                         return false;
 369
 370                 default:
 371                         break;
 372                 }
 373                 break;
 374
 375         case GDK_BUTTON_RELEASE:
 376                 event_x = ev->motion.x;
 377                 event_y = ev->motion.y;
 378                 group->w2i(event_x, event_y);
 379                 group->ungrab(ev->button.time);
 380                 event_frame = trackview.editor().pixel_to_frame(event_x);
 381
 382                 if (_pressed_button != 1) {
 383                         return false;
 384                 }
 385
 386                 switch (_mouse_state) {
 387                 case Pressed: // Clicked
 388                         switch (trackview.editor().current_midi_edit_mode()) {
 389                         case MidiEditSelect:
 390                         case MidiEditResize:
 391                                 clear_selection();
 392                                 break;
 393                         case MidiEditPencil:
 394                                 create_note_at(event_x, event_y, _default_note_length);
 395                         default: break;
 396                         }
 397                         _mouse_state = None;
 398                         break;
 399                 case SelectRectDragging: // Select drag done
 400                         _mouse_state = None;
 401                         delete drag_rect;
 402                         drag_rect = NULL;
 403                         break;
 404                 case AddDragging: // Add drag done
 405                         _mouse_state = None;
 406                         if (drag_rect->property_x2() > drag_rect->property_x1() + 2) {
 407                                 const double x      = drag_rect->property_x1();
 408                                 const double length = trackview.editor().pixel_to_frame(
 409                                                         drag_rect->property_x2() - drag_rect->property_x1());
 410
 411                                 create_note_at(x, drag_rect->property_y1(), length);
 412                         }
 413
 414                         delete drag_rect;
 415                         drag_rect = NULL;
 416                 default: break;
 417                 }
 418
 419         default: break;
 420         }
 421
 422         return false;
 423 }
 424
 425
 426 /** Add a note to the model, and the view, at a canvas (click) coordinate */
 427 void
 428 MidiRegionView::create_note_at(double x, double y, double length)
 429 {
 430         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 431         MidiStreamView* const view = mtv->midi_view();
 432
 433         double note = midi_stream_view()->y_to_note(y);
 434
 435         assert(note >= 0.0);
 436         assert(note <= 127.0);
 437
 438         nframes64_t new_note_time = trackview.editor().pixel_to_frame (x);
 439         assert(new_note_time >= 0);
 440         new_note_time += _region->start();
 441
 442         /*
 443         const Meter& m = trackview.session().tempo_map().meter_at(new_note_time);
 444         const Tempo& t = trackview.session().tempo_map().tempo_at(new_note_time);
 445         double length = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 446         */
 447
 448         // we need to snap here again in nframes64_t in order to be sample accurate
 449         // since note time is region-absolute but snap_to_frame expects position-relative
 450         // time we have to coordinate transform back and forth here.
 451         nframes64_t new_note_time_position_relative = new_note_time      - _region->start();
 452         new_note_time = snap_to_frame(new_note_time_position_relative) + _region->start();
 453
 454         // we need to snap the length too to be sample accurate
 455         nframes64_t new_note_length = nframes_t(length);
 456         new_note_length = snap_to_frame(new_note_time_position_relative + new_note_length) + _region->start()
 457                             - new_note_time;
 458
 459         const boost::shared_ptr<Evoral::Note> new_note(new Evoral::Note(
 460                         0, new_note_time, new_note_length, (uint8_t)note, 0x40));
 461         view->update_note_range(new_note->note());
 462
 463         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 464         cmd->add(new_note);
 465         _model->apply_command(trackview.session(), cmd);
 466 }
 467
 468
 469 void
 470 MidiRegionView::clear_events()
 471 {
 472         clear_selection();
 473
 474         MidiGhostRegion* gr;
 475         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 476                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 477                         gr->clear_events();
 478                 }
 479         }
 480
 481         for (Events::iterator i = _events.begin(); i != _events.end(); ++i)
 482                 delete *i;
 483
 484         _events.clear();
 485         _pgm_changes.clear();
 486 }
 487
 488
 489 void
 490 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 491 {
 492         _model = model;
 493
 494         if (_enable_display)
 495                 redisplay_model();
 496 }
 497
 498
 499 void
 500 MidiRegionView::start_delta_command(string name)
 501 {
 502         if (!_delta_command)
 503                 _delta_command = _model->new_delta_command(name);
 504 }
 505
 506 void
 507 MidiRegionView::command_add_note(const boost::shared_ptr<Evoral::Note> note, bool selected)
 508 {
 509         if (_delta_command)
 510                 _delta_command->add(note);
 511
 512         if (selected)
 513                 _marked_for_selection.insert(note);
 514 }
 515
 516 void
 517 MidiRegionView::command_remove_note(ArdourCanvas::CanvasNoteEvent* ev)
 518 {
 519         if (_delta_command && ev->note()) {
 520                 _delta_command->remove(ev->note());
 521         }
 522 }
 523
 524 void
 525 MidiRegionView::apply_command()
 526 {
 527         if (!_delta_command) {
 528                 return;
 529         }
 530
 531         // Mark all selected notes for selection when model reloads
 532         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 533                 _marked_for_selection.insert((*i)->note());
 534         }
 535
 536         _model->apply_command(trackview.session(), _delta_command);
 537         _delta_command = NULL;
 538         midi_view()->midi_track()->diskstream()->playlist_modified();
 539
 540         _marked_for_selection.clear();
 541 }
 542
 543
 544 void
 545 MidiRegionView::abort_command()
 546 {
 547         delete _delta_command;
 548         _delta_command = NULL;
 549         clear_selection();
 550 }
 551
 552
 553 void
 554 MidiRegionView::redisplay_model()
 555 {
 556         // Don't redisplay the model if we're currently recording and displaying that
 557         if (_active_notes)
 558                 return;
 559
 560         if (_model) {
 561
 562                 clear_events();
 563                 _model->read_lock();
 564
 565
 566                 MidiModel::Notes notes = _model->notes();
 567                 /*
 568                 cerr << endl << _model->midi_source()->name() << " : redisplaying " << notes.size() << " notes:" << endl;
 569                 for (MidiModel::Notes::iterator i = notes.begin(); i != notes.end(); ++i) {
 570                         cerr << "NOTE  time: " << (*i)->time()
 571                                  << "  pitch: " << int((*i)->note())
 572                              << "  length: " << (*i)->length()
 573                              << "  end-time: " << (*i)->end_time()
 574                              << "  velocity: " << int((*i)->velocity())
 575                              << endl;
 576                 }
 577                 */
 578
 579                 for (size_t i = 0; i < _model->n_notes(); ++i) {
 580                         add_note(_model->note_at(i));
 581                 }
 582
 583                 find_and_insert_program_change_flags();
 584
 585                 // Is this necessary?
 586                 /*for (Automatable::Controls::const_iterator i = _model->controls().begin();
 587                                 i != _model->controls().end(); ++i) {
 588
 589                         assert(i->second);
 590
 591                         boost::shared_ptr<AutomationTimeAxisView> at
 592                                 = midi_view()->automation_child(i->second->parameter());
 593                         if (!at)
 594                                 continue;
 595
 596                         Gdk::Color col = midi_stream_view()->get_region_color();
 597
 598                         boost::shared_ptr<AutomationRegionView> arv;
 599
 600                         {
 601                                 Glib::Mutex::Lock list_lock (i->second->list()->lock());
 602
 603                                 arv = boost::shared_ptr<AutomationRegionView>(
 604                                                 new AutomationRegionView(at->canvas_display,
 605                                                         *at.get(), _region, i->second->list(),
 606                                                         midi_stream_view()->get_samples_per_unit(), col));
 607                         }
 608
 609                         arv->set_duration(_region->length(), this);
 610                         arv->init(col, true);
 611
 612                         _automation_children.insert(std::make_pair(i->second->parameter(), arv));
 613                 }*/
 614                 _model->read_unlock();
 615
 616         } else {
 617                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
 618         }
 619 }
 620
 621 void
 622 MidiRegionView::find_and_insert_program_change_flags()
 623 {
 624         // Draw program change 'flags'
 625         for (Automatable::Controls::iterator control = _model->controls().begin();
 626                         control != _model->controls().end(); ++control) {
 627                 if (control->first.type() == MidiPgmChangeAutomation) {
 628                         Glib::Mutex::Lock list_lock (control->second->list()->lock());
 629
 630                         uint8_t channel       = control->first.channel();
 631
 632                         for (AutomationList::const_iterator event = control->second->list()->begin();
 633                                         event != control->second->list()->end(); ++event) {
 634                                 double event_time     = (*event)->when;
 635                                 double program_number = floor((*event)->value + 0.5);
 636
 637                                 //cerr << " got program change on channel " << int(channel) << " time: " << event_time << " number: " << program_number << endl;
 638
 639                                 // find bank select msb and lsb for the program change
 640                                 Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
 641                                 boost::shared_ptr<Evoral::Control>  msb_control = _model->control(bank_select_msb);
 642                                 uint8_t msb = 0;
 643                                 if (msb_control != 0) {
 644                                         msb = uint8_t(floor(msb_control->get_float(true, event_time) + 0.5));
 645                                 }
 646
 647                                 Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
 648                                 boost::shared_ptr<Evoral::Control>  lsb_control = _model->control(bank_select_lsb);
 649                                 uint8_t lsb = 0;
 650                                 if (lsb_control != 0) {
 651                                         lsb = uint8_t(floor(lsb_control->get_float(true, event_time) + 0.5));
 652                                 }
 653
 654                                 //cerr << " got msb " << int(msb) << " and lsb " << int(lsb) << " thread_id: " << pthread_self() << endl;
 655
 656                                 MIDI::Name::PatchPrimaryKey patch_key(msb, lsb, program_number);
 657
 658                                 boost::shared_ptr<MIDI::Name::Patch> patch =
 659                                         MIDI::Name::MidiPatchManager::instance().find_patch(
 660                                                         _model_name,
 661                                                         _custom_device_mode,
 662                                                         channel,
 663                                                         patch_key
 664                                         );
 665
 666                                 ControlEvent program_change(nframes_t(event_time), uint8_t(program_number), channel);
 667
 668                                 if (patch != 0) {
 669                                         //cerr << " got patch with name " << patch->name() << " number " << patch->number() << endl;
 670                                         add_pgm_change(program_change, patch->name());
 671                                 } else {
 672                                         char buf[4];
 673                                         snprintf(buf, 4, "%d", int(program_number));
 674                                         add_pgm_change(program_change, buf);
 675                                 }
 676                         }
 677                         break;
 678                 } else if (control->first.type() == MidiCCAutomation) {
 679                         //cerr << " found CC Automation of channel " << int(control->first.channel()) << " and id " << control->first.id() << endl;
 680                 }
 681         }
 682 }
 683
 684
 685 MidiRegionView::~MidiRegionView ()
 686 {
 687         in_destructor = true;
 688
 689         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 690
 691         if (_active_notes) {
 692                 end_write();
 693         }
 694
 695         _selection.clear();
 696         clear_events();
 697         delete _note_group;
 698         delete _delta_command;
 699 }
 700
 701
 702 void
 703 MidiRegionView::region_resized (Change what_changed)
 704 {
 705         RegionView::region_resized(what_changed);
 706
 707         if (what_changed & ARDOUR::PositionChanged) {
 708                 if (_enable_display)
 709                         redisplay_model();
 710         }
 711 }
 712
 713 void
 714 MidiRegionView::reset_width_dependent_items (double pixel_width)
 715 {
 716         RegionView::reset_width_dependent_items(pixel_width);
 717         assert(_pixel_width == pixel_width);
 718
 719         if (_enable_display)
 720                 redisplay_model();
 721 }
 722
 723 void
 724 MidiRegionView::set_height (gdouble height)
 725 {
 726         static const double FUDGE = 2;
 727         const double old_height = _height;
 728         RegionView::set_height(height);
 729         _height = height - FUDGE;
 730
 731         apply_note_range(midi_stream_view()->lowest_note(),
 732                          midi_stream_view()->highest_note(),
 733                          height != old_height + FUDGE);
 734
 735         if (name_text) {
 736                 name_text->raise_to_top();
 737         }
 738 }
 739
 740
 741 /** Apply the current note range from the stream view
 742  * by repositioning/hiding notes as necessary
 743  */
 744 void
 745 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
 746 {
 747         if (_enable_display) {
 748                 if (!force && _current_range_min == min && _current_range_max == max) {
 749                         return;
 750                 }
 751
 752                 _current_range_min = min;
 753                 _current_range_max = max;
 754
 755                 for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
 756                         CanvasNoteEvent* event = *i;
 757                         Item* item = dynamic_cast<Item*>(event);
 758                         assert(item);
 759                         if (event && event->note()) {
 760                                 if (event->note()->note() < _current_range_min || event->note()->note() > _current_range_max) {
 761                                         if (canvas_item_visible(item)) {
 762                                                 item->hide();
 763                                         }
 764                                 } else {
 765                                         if (!canvas_item_visible(item)) {
 766                                                 item->show();
 767                                         }
 768
 769                                         event->hide_velocity();
 770                                         if (CanvasNote* note = dynamic_cast<CanvasNote*>(event)) {
 771                                                 const double y1 = midi_stream_view()->note_to_y(event->note()->note());
 772                                                 const double y2 = y1 + floor(midi_stream_view()->note_height());
 773
 774                                                 note->property_y1() = y1;
 775                                                 note->property_y2() = y2;
 776                                         } else if (CanvasHit* hit = dynamic_cast<CanvasHit*>(event)) {
 777                                                 double x = trackview.editor().frame_to_pixel((nframes64_t)
 778                                                                 event->note()->time() - _region->start());
 779                                                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 780                                                 double y = midi_stream_view()->note_to_y(event->note()->note())
 781                                                                  + ((diamond_size-2.0) / 4.0);
 782
 783                                                 hit->set_height(diamond_size);
 784                                                 hit->move(x-hit->x1(), y-hit->y1());
 785                                                 hit->show();
 786                                         }
 787                                         if (event->selected()) {
 788                                                 event->show_velocity();
 789                                         }
 790                                 }
 791                         }
 792                 }
 793
 794         }
 795 }
 796
 797 GhostRegion*
 798 MidiRegionView::add_ghost (TimeAxisView& tv)
 799 {
 800         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 801         CanvasNote* note;
 802         assert(rtv);
 803
 804         double unit_position = _region->position () / samples_per_unit;
 805         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
 806         MidiGhostRegion* ghost;
 807
 808         if (mtv && mtv->midi_view()) {
 809                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group.
 810                    this is because it's nice to have midi notes on top of the note lines and
 811                    audio waveforms under it.
 812                  */
 813                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
 814         }
 815         else {
 816                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
 817         }
 818
 819         ghost->set_height ();
 820         ghost->set_duration (_region->length() / samples_per_unit);
 821         ghosts.push_back (ghost);
 822
 823         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 824                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
 825                         ghost->add_note(note);
 826                 }
 827         }
 828
 829         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 830
 831         return ghost;
 832 }
 833
 834
 835 /** Begin tracking note state for successive calls to add_event
 836  */
 837 void
 838 MidiRegionView::begin_write()
 839 {
 840         assert(!_active_notes);
 841         _active_notes = new CanvasNote*[128];
 842         for (unsigned i=0; i < 128; ++i) {
 843                 _active_notes[i] = NULL;
 844         }
 845 }
 846
 847
 848 /** Destroy note state for add_event
 849  */
 850 void
 851 MidiRegionView::end_write()
 852 {
 853         delete[] _active_notes;
 854         _active_notes = NULL;
 855         _marked_for_selection.clear();
 856 }
 857
 858
 859 /** Resolve an active MIDI note (while recording).
 860  */
 861 void
 862 MidiRegionView::resolve_note(uint8_t note, double end_time)
 863 {
 864         if (midi_view()->note_mode() != Sustained)
 865                 return;
 866
 867         if (_active_notes && _active_notes[note]) {
 868                 _active_notes[note]->property_x2() = trackview.editor().frame_to_pixel((nframes64_t)end_time);
 869                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 870                 _active_notes[note] = NULL;
 871         }
 872 }
 873
 874
 875 /** Extend active notes to rightmost edge of region (if length is changed)
 876  */
 877 void
 878 MidiRegionView::extend_active_notes()
 879 {
 880         if (!_active_notes) {
 881                 return;
 882         }
 883
 884         for (unsigned i=0; i < 128; ++i) {
 885                 if (_active_notes[i]) {
 886                         _active_notes[i]->property_x2() = trackview.editor().frame_to_pixel(_region->length());
 887                 }
 888         }
 889 }
 890
 891 void
 892 MidiRegionView::play_midi_note(boost::shared_ptr<Evoral::Note> note)
 893 {
 894         if (!trackview.editor().sound_notes()) {
 895                 return;
 896         }
 897
 898         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
 899         assert(route_ui);
 900
 901         route_ui->midi_track()->write_immediate_event(note->on_event().size(), note->on_event().buffer());
 902
 903         nframes_t note_length_ms = (note->off_event().time() - note->on_event().time())
 904                         * (1000 / (double)route_ui->session().nominal_frame_rate());
 905         Glib::signal_timeout().connect(bind(mem_fun(this, &MidiRegionView::play_midi_note_off), note),
 906                         note_length_ms, G_PRIORITY_DEFAULT);
 907 }
 908
 909 bool
 910 MidiRegionView::play_midi_note_off(boost::shared_ptr<Evoral::Note> note)
 911 {
 912         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
 913         assert(route_ui);
 914
 915         route_ui->midi_track()->write_immediate_event(note->off_event().size(), note->off_event().buffer());
 916
 917         return false;
 918 }
 919
 920
 921 /** Add a MIDI note to the view (with length).
 922  *
 923  * If in sustained mode, notes with length 0 will be considered active
 924  * notes, and resolve_note should be called when the corresponding note off
 925  * event arrives, to properly display the note.
 926  */
 927 void
 928 MidiRegionView::add_note(const boost::shared_ptr<Evoral::Note> note)
 929 {
 930         assert(note->time() >= 0);
 931         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
 932
 933         // dont display notes beyond the region bounds
 934         if ( note->time() - _region->start() >= _region->length() ||
 935                 note->time() <  _region->start() ||
 936                 note->note() < midi_stream_view()->lowest_note() ||
 937                 note->note() > midi_stream_view()->highest_note() ) {
 938                 return;
 939         }
 940
 941         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 942
 943         CanvasNoteEvent* event = 0;
 944
 945         const double x = trackview.editor().frame_to_pixel((nframes64_t)note->time() - _region->start());
 946
 947         if (midi_view()->note_mode() == Sustained) {
 948
 949                 const double y1 = midi_stream_view()->note_to_y(note->note());
 950                 const double note_endpixel =
 951                         trackview.editor().frame_to_pixel((nframes64_t)note->end_time() - _region->start());
 952
 953                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
 954                 ev_rect->property_x1() = x;
 955                 ev_rect->property_y1() = y1;
 956                 if (note->length() > 0)
 957                         ev_rect->property_x2() = note_endpixel;
 958                 else
 959                         ev_rect->property_x2() = trackview.editor().frame_to_pixel(_region->length());
 960                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 961
 962                 if (note->length() == 0) {
 963
 964                         if (_active_notes) {
 965                                 assert(note->note() < 128);
 966                                 // If this note is already active there's a stuck note,
 967                                 // finish the old note rectangle
 968                                 if (_active_notes[note->note()]) {
 969                                         CanvasNote* const old_rect = _active_notes[note->note()];
 970                                         boost::shared_ptr<Evoral::Note> old_note = old_rect->note();
 971                                         cerr << "MidiModel: WARNING: Note has length 0: chan " << old_note->channel()
 972                                                 << "note " << (int)old_note->note() << " @ " << old_note->time() << endl;
 973                                         /* FIXME: How large to make it?  Make it a diamond? */
 974                                         old_rect->property_x2() = old_rect->property_x1() + 2.0;
 975                                         old_rect->property_outline_what() = (guint32) 0xF;
 976                                 }
 977                                 _active_notes[note->note()] = ev_rect;
 978                         }
 979                         /* outline all but right edge */
 980                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 981                 } else {
 982                         /* outline all edges */
 983                         ev_rect->property_outline_what() = (guint32) 0xF;
 984                 }
 985
 986                 ev_rect->show();
 987                 _events.push_back(ev_rect);
 988                 event = ev_rect;
 989
 990                 MidiGhostRegion* gr;
 991
 992                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 993                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 994                                 gr->add_note(ev_rect);
 995                         }
 996                 }
 997
 998         } else if (midi_view()->note_mode() == Percussive) {
 999
1000                 //cerr << "MRV::add_note percussive " << note->note() << " @ " << note->time()
1001                 //      << " .. " << note->end_time() << endl;
1002
1003                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
1004                 const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
1005
1006                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
1007                 ev_diamond->move(x, y);
1008                 ev_diamond->show();
1009                 _events.push_back(ev_diamond);
1010                 event = ev_diamond;
1011         } else {
1012                 event = 0;
1013         }
1014
1015         if (event) {
1016                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
1017                         note_selected(event, true);
1018                 }
1019                 event->on_channel_selection_change(_last_channel_selection);
1020         }
1021 }
1022
1023 void
1024 MidiRegionView::add_pgm_change(ControlEvent& program, string displaytext)
1025 {
1026         assert(program.time >= 0);
1027
1028         // dont display program changes beyond the region bounds
1029         if (program.time - _region->start() >= _region->length() || program.time <  _region->start())
1030                 return;
1031
1032         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1033         const double x = trackview.editor().frame_to_pixel((nframes64_t)program.time - _region->start());
1034
1035         double height = midi_stream_view()->contents_height();
1036
1037         boost::shared_ptr<CanvasProgramChange> pgm_change = boost::shared_ptr<CanvasProgramChange>(
1038                         new CanvasProgramChange(
1039                                         *this,
1040                                         *group,
1041                                         displaytext,
1042                                         height,
1043                                         x,
1044                                         1.0,
1045                                         _model_name,
1046                                         _custom_device_mode,
1047                                         program.time,
1048                                         program.channel,
1049                                         program.value));
1050
1051         _pgm_changes.push_back(pgm_change);
1052 }
1053
1054 void
1055 MidiRegionView::get_patch_key_at(double time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1056 {
1057
1058         cerr << "getting patch key at " << time << " for channel " << channel << endl;
1059         Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1060         boost::shared_ptr<Evoral::Control>  msb_control = _model->control(bank_select_msb);
1061         float msb = -1.0;
1062         if (msb_control != 0) {
1063                 msb = int(msb_control->get_float(true, time));
1064                 cerr << "got msb " << msb;
1065         }
1066
1067         Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1068         boost::shared_ptr<Evoral::Control>  lsb_control = _model->control(bank_select_lsb);
1069         float lsb = -1.0;
1070         if (lsb_control != 0) {
1071                 lsb = lsb_control->get_float(true, time);
1072                 cerr << " got lsb " << lsb;
1073         }
1074
1075         Evoral::Parameter program_change(MidiPgmChangeAutomation, channel, 0);
1076         boost::shared_ptr<Evoral::Control>  program_control = _model->control(program_change);
1077         float program_number = -1.0;
1078         if (program_control != 0) {
1079                 program_number = program_control->get_float(true, time);
1080                 cerr << " got program " << program_number << endl;
1081         }
1082
1083         key.msb = (int) floor(msb + 0.5);
1084         key.lsb = (int) floor(lsb + 0.5);
1085         key.program_number = (int) floor(program_number + 0.5);
1086         assert(key.is_sane());
1087 }
1088
1089
1090 void
1091 MidiRegionView::alter_program_change(ControlEvent& old_program, const MIDI::Name::PatchPrimaryKey& new_patch)
1092 {
1093
1094         // TODO: Get the real event here and alter them at the original times
1095         Evoral::Parameter bank_select_msb(MidiCCAutomation, old_program.channel, MIDI_CTL_MSB_BANK);
1096         boost::shared_ptr<Evoral::Control>  msb_control = _model->control(bank_select_msb);
1097         if (msb_control != 0) {
1098                 msb_control->set_float(float(new_patch.msb), true, old_program.time);
1099         }
1100
1101         // TODO: Get the real event here and alter them at the original times
1102         Evoral::Parameter bank_select_lsb(MidiCCAutomation, old_program.channel, MIDI_CTL_LSB_BANK);
1103         boost::shared_ptr<Evoral::Control>  lsb_control = _model->control(bank_select_lsb);
1104         if (lsb_control != 0) {
1105                 lsb_control->set_float(float(new_patch.lsb), true, old_program.time);
1106         }
1107
1108         Evoral::Parameter program_change(MidiPgmChangeAutomation, old_program.channel, 0);
1109         boost::shared_ptr<Evoral::Control>  program_control = _model->control(program_change);
1110
1111         assert(program_control != 0);
1112         program_control->set_float(float(new_patch.program_number), true, old_program.time);
1113
1114         redisplay_model();
1115 }
1116
1117 void
1118 MidiRegionView::program_selected(CanvasProgramChange& program, const MIDI::Name::PatchPrimaryKey& new_patch)
1119 {
1120         ControlEvent program_change_event(program.event_time(), program.program(), program.channel());
1121         alter_program_change(program_change_event, new_patch);
1122 }
1123
1124 void
1125 MidiRegionView::previous_program(CanvasProgramChange& program)
1126 {
1127         MIDI::Name::PatchPrimaryKey key;
1128         get_patch_key_at(program.event_time(), program.channel(), key);
1129
1130         boost::shared_ptr<MIDI::Name::Patch> patch =
1131                 MIDI::Name::MidiPatchManager::instance().previous_patch(
1132                                 _model_name,
1133                                 _custom_device_mode,
1134                                 program.channel(),
1135                                 key
1136                 );
1137
1138         ControlEvent program_change_event(program.event_time(), program.program(), program.channel());
1139         if (patch) {
1140                 alter_program_change(program_change_event, patch->patch_primary_key());
1141         }
1142 }
1143
1144 void
1145 MidiRegionView::next_program(CanvasProgramChange& program)
1146 {
1147         MIDI::Name::PatchPrimaryKey key;
1148         get_patch_key_at(program.event_time(), program.channel(), key);
1149
1150         boost::shared_ptr<MIDI::Name::Patch> patch =
1151                 MIDI::Name::MidiPatchManager::instance().next_patch(
1152                                 _model_name,
1153                                 _custom_device_mode,
1154                                 program.channel(),
1155                                 key
1156                 );
1157         ControlEvent program_change_event(program.event_time(), program.program(), program.channel());
1158         if (patch) {
1159                 alter_program_change(program_change_event, patch->patch_primary_key());
1160         }
1161 }
1162
1163 void
1164 MidiRegionView::delete_selection()
1165 {
1166         assert(_delta_command);
1167
1168         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1169                 if ((*i)->selected()) {
1170                         _delta_command->remove((*i)->note());
1171                 }
1172         }
1173
1174         _selection.clear();
1175 }
1176
1177 void
1178 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1179 {
1180         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1181                 if ((*i)->selected() && (*i) != ev) {
1182                         (*i)->selected(false);
1183                 }
1184         }
1185
1186         _selection.clear();
1187 }
1188
1189 void
1190 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1191 {
1192         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1193                 if ((*i) != ev) {
1194                         (*i)->selected(false);
1195                 }
1196         }
1197
1198         _selection.clear();
1199         _selection.insert(ev);
1200
1201         if ( ! ev->selected()) {
1202                 ev->selected(true);
1203         }
1204 }
1205
1206 void
1207 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
1208 {
1209         if ( ! add) {
1210                 clear_selection_except(ev);
1211         }
1212
1213         if (_selection.insert(ev).second) {
1214                 play_midi_note(ev->note());
1215         }
1216
1217         if ( ! ev->selected()) {
1218                 ev->selected(true);
1219         }
1220 }
1221
1222
1223 void
1224 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
1225 {
1226         if ( ! add) {
1227                 clear_selection_except(ev);
1228         }
1229
1230         _selection.erase(ev);
1231
1232         if (ev->selected()) {
1233                 ev->selected(false);
1234         }
1235 }
1236
1237
1238 void
1239 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
1240 {
1241         const double last_y = std::min(y1, y2);
1242         const double y      = std::max(y1, y2);
1243
1244         // TODO: Make this faster by storing the last updated selection rect, and only
1245         // adjusting things that are in the area that appears/disappeared.
1246         // We probably need a tree to be able to find events in O(log(n)) time.
1247
1248 #ifndef NDEBUG
1249         double last_x1 = 0.0;
1250 #endif
1251
1252         if (x1 < x2) {
1253                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1254 #ifndef NDEBUG
1255                         // Events should always be sorted by increasing x1() here
1256                         assert((*i)->x1() >= last_x1);
1257                         last_x1 = (*i)->x1();
1258 #endif
1259                         // Inside rectangle
1260                         if ((*i)->x1() >= x1 && (*i)->x1() <= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
1261                                 if (!(*i)->selected()) {
1262                                         (*i)->selected(true);
1263                                         _selection.insert(*i);
1264                                         play_midi_note((*i)->note());
1265                                 }
1266                         // Not inside rectangle
1267                         } else if ((*i)->selected()) {
1268                                 (*i)->selected(false);
1269                                 _selection.erase(*i);
1270                         }
1271                 }
1272         } else {
1273                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1274 #ifndef NDEBUG
1275                         // Events should always be sorted by increasing x1() here
1276                         assert((*i)->x1() >= last_x1);
1277                         last_x1 = (*i)->x1();
1278 #endif
1279                         // Inside rectangle
1280                         if ((*i)->x2() <= x1 && (*i)->x2() >= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
1281                                 if (!(*i)->selected()) {
1282                                         (*i)->selected(true);
1283                                         _selection.insert(*i);
1284                                         play_midi_note((*i)->note());
1285                                 }
1286                         // Not inside rectangle
1287                         } else if ((*i)->selected()) {
1288                                 (*i)->selected(false);
1289                                 _selection.erase(*i);
1290                         }
1291                 }
1292         }
1293 }
1294
1295
1296 void
1297 MidiRegionView::move_selection(double dx, double dy)
1298 {
1299         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
1300                 (*i)->move_event(dx, dy);
1301 }
1302
1303
1304 void
1305 MidiRegionView::note_dropped(CanvasNoteEvent* ev, double dt, uint8_t dnote)
1306 {
1307         // TODO: This would be faster/nicer with a MoveCommand that doesn't need to copy...
1308         if (_selection.find(ev) != _selection.end()) {
1309                 uint8_t lowest_note_in_selection  = midi_stream_view()->lowest_note();
1310                 uint8_t highest_note_in_selection = midi_stream_view()->highest_note();
1311                 uint8_t highest_note_difference = 0;
1312
1313                 // find highest and lowest notes first
1314                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1315                         uint8_t pitch = (*i)->note()->note();
1316                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
1317                         highest_note_in_selection = std::max(highest_note_in_selection, pitch);
1318                 }
1319
1320                 /*
1321                 cerr << "dnote: " << (int) dnote << endl;
1322                 cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
1323                      << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
1324                 cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
1325                      << int(highest_note_in_selection) << endl;
1326                 cerr << "selection size: " << _selection.size() << endl;
1327                 cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
1328                 */
1329
1330                 // Make sure the note pitch does not exceed the MIDI standard range
1331                 if (dnote <= 127 && (highest_note_in_selection + dnote > 127)) {
1332                         highest_note_difference = highest_note_in_selection - 127;
1333                 }
1334
1335                 start_delta_command(_("move notes"));
1336
1337                 for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ) {
1338                         Selection::iterator next = i;
1339                         ++next;
1340
1341                         const boost::shared_ptr<Evoral::Note> copy(new Evoral::Note(*(*i)->note().get()));
1342
1343                         // we need to snap here again in nframes64_t in order to be sample accurate
1344                         double new_note_time = (*i)->note()->time();
1345                         new_note_time +=  dt;
1346
1347                         // keep notes inside region if dragged beyond left region bound
1348                         if (new_note_time < _region->start()) {
1349                                 new_note_time = _region->start();
1350                         }
1351
1352                         // since note time is region-absolute but snap_to_frame expects position-relative
1353                         // time we have to coordinate transform back and forth here.
1354                         new_note_time = snap_to_frame(nframes64_t(new_note_time) - _region->start()) + _region->start();
1355
1356                         copy->set_time(new_note_time);
1357
1358                         uint8_t original_pitch = (*i)->note()->note();
1359                         uint8_t new_pitch =  original_pitch + dnote - highest_note_difference;
1360
1361                         // keep notes in standard midi range
1362                         clamp_0_to_127(new_pitch);
1363
1364                         //notes which are dragged beyond the standard midi range snap back to their original place
1365                         if ((original_pitch != 0 && new_pitch == 0) || (original_pitch != 127 && new_pitch == 127)) {
1366                                 new_pitch = original_pitch;
1367                         }
1368
1369                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
1370                         highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
1371
1372                         copy->set_note(new_pitch);
1373
1374                         command_remove_note(*i);
1375                         command_add_note(copy, (*i)->selected());
1376
1377                         i = next;
1378                 }
1379
1380                 apply_command();
1381
1382                 // care about notes being moved beyond the upper/lower bounds on the canvas
1383                 if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
1384                                 highest_note_in_selection > midi_stream_view()->highest_note()) {
1385                         midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
1386                 }
1387         }
1388 }
1389
1390 nframes64_t
1391 MidiRegionView::snap_to_frame(double x)
1392 {
1393         PublicEditor &editor = trackview.editor();
1394         // x is region relative
1395         // convert x to global frame
1396         nframes64_t frame = editor.pixel_to_frame(x) + _region->position();
1397         editor.snap_to(frame);
1398         // convert event_frame back to local coordinates relative to position
1399         frame -= _region->position();
1400         return frame;
1401 }
1402
1403 nframes64_t
1404 MidiRegionView::snap_to_frame(nframes64_t x)
1405 {
1406         PublicEditor &editor = trackview.editor();
1407         // x is region relative
1408         // convert x to global frame
1409         nframes64_t frame = x + _region->position();
1410         editor.snap_to(frame);
1411         // convert event_frame back to local coordinates relative to position
1412         frame -= _region->position();
1413         return frame;
1414 }
1415
1416 double
1417 MidiRegionView::snap_to_pixel(double x)
1418 {
1419         return (double) trackview.editor().frame_to_pixel(snap_to_frame(x));
1420 }
1421
1422 double
1423 MidiRegionView::get_position_pixels()
1424 {
1425         nframes64_t region_frame = get_position();
1426         return trackview.editor().frame_to_pixel(region_frame);
1427 }
1428
1429 void
1430 MidiRegionView::begin_resizing(CanvasNote::NoteEnd note_end)
1431 {
1432         _resize_data.clear();
1433
1434         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1435                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
1436
1437                 // only insert CanvasNotes into the map
1438                 if (note) {
1439                         NoteResizeData *resize_data = new NoteResizeData();
1440                         resize_data->canvas_note = note;
1441
1442                         // create a new SimpleRect from the note which will be the resize preview
1443                         SimpleRect *resize_rect =
1444                                 new SimpleRect(
1445                                                 *group,
1446                                                 note->x1(),
1447                                                 note->y1(),
1448                                                 note->x2(),
1449                                                 note->y2());
1450
1451                         // calculate the colors: get the color settings
1452                         uint32_t fill_color =
1453                                 UINT_RGBA_CHANGE_A(
1454                                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
1455                                                 128);
1456
1457                         // make the resize preview notes more transparent and bright
1458                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
1459
1460                         // calculate color based on note velocity
1461                         resize_rect->property_fill_color_rgba() =
1462                                 UINT_INTERPOLATE(
1463                                         CanvasNoteEvent::meter_style_fill_color(note->note()->velocity()),
1464                                         fill_color,
1465                                         0.85);
1466
1467                         resize_rect->property_outline_color_rgba() =
1468                                 CanvasNoteEvent::calculate_outline(ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
1469
1470                         resize_data->resize_rect = resize_rect;
1471
1472                         if (note_end == CanvasNote::NOTE_ON) {
1473                                 resize_data->current_x = note->x1();
1474                         } else { // NOTE_OFF
1475                                 resize_data->current_x = note->x2();
1476                         }
1477
1478                         _resize_data.push_back(resize_data);
1479                 }
1480         }
1481 }
1482
1483 void
1484 MidiRegionView::update_resizing(CanvasNote::NoteEnd note_end, double x, bool relative)
1485 {
1486         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1487                 SimpleRect     *resize_rect = (*i)->resize_rect;
1488                 CanvasNote     *canvas_note = (*i)->canvas_note;
1489
1490                 const double region_start = get_position_pixels();
1491
1492                 if (relative) {
1493                         (*i)->current_x = (*i)->current_x + x;
1494                 } else {
1495                         // x is in track relative, transform it to region relative
1496                         (*i)->current_x = x - region_start;
1497                 }
1498
1499                 double current_x = (*i)->current_x;
1500
1501                 if (note_end == CanvasNote::NOTE_ON) {
1502                         resize_rect->property_x1() = snap_to_pixel(current_x);
1503                         resize_rect->property_x2() = canvas_note->x2();
1504                 } else {
1505                         resize_rect->property_x2() = snap_to_pixel(current_x);
1506                         resize_rect->property_x1() = canvas_note->x1();
1507                 }
1508         }
1509 }
1510
1511 void
1512 MidiRegionView::commit_resizing(CanvasNote::NoteEnd note_end, double event_x, bool relative)
1513 {
1514         start_delta_command(_("resize notes"));
1515
1516         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1517                 CanvasNote*  canvas_note = (*i)->canvas_note;
1518                 SimpleRect*  resize_rect = (*i)->resize_rect;
1519                 double       current_x   = (*i)->current_x;
1520                 const double position    = get_position_pixels();
1521
1522                 if (!relative) {
1523                         // event_x is in track relative, transform it to region relative
1524                         current_x = event_x - position;
1525                 }
1526
1527                 // because snapping works on world coordinates we have to transform current_x
1528                 // to world coordinates before snapping and transform it back afterwards
1529                 nframes64_t current_frame = snap_to_frame(current_x);
1530                 // transform to region start relative
1531                 current_frame += _region->start();
1532
1533                 const boost::shared_ptr<Evoral::Note> copy(new Evoral::Note(*(canvas_note->note().get())));
1534
1535                 // resize beginning of note
1536                 if (note_end == CanvasNote::NOTE_ON && current_frame < copy->end_time()) {
1537                         command_remove_note(canvas_note);
1538                         copy->on_event().time() = current_frame;
1539                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1540                 }
1541                 // resize end of note
1542                 if (note_end == CanvasNote::NOTE_OFF && current_frame > copy->time()) {
1543                         command_remove_note(canvas_note);
1544                         copy->off_event().time() = current_frame;
1545                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1546                 }
1547
1548                 delete resize_rect;
1549                 delete (*i);
1550         }
1551
1552         _resize_data.clear();
1553         apply_command();
1554 }
1555
1556 void
1557 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
1558 {
1559         const boost::shared_ptr<Evoral::Note> copy(new Evoral::Note(*(event->note().get())));
1560
1561         if (relative) {
1562                 uint8_t new_velocity = copy->velocity() + velocity;
1563                 clamp_0_to_127(new_velocity);
1564                 copy->set_velocity(new_velocity);
1565         } else {
1566                 copy->set_velocity(velocity);
1567         }
1568
1569         command_remove_note(event);
1570         command_add_note(copy, event->selected());
1571 }
1572
1573 void
1574 MidiRegionView::change_velocity(CanvasNoteEvent* ev, int8_t velocity, bool relative)
1575 {
1576         start_delta_command(_("change velocity"));
1577
1578         change_note_velocity(ev, velocity, relative);
1579
1580         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1581                 Selection::iterator next = i;
1582                 ++next;
1583                 if ( !(*((*i)->note()) == *(ev->note())) ) {
1584                         change_note_velocity(*i, velocity, relative);
1585                 }
1586                 i = next;
1587         }
1588
1589         apply_command();
1590 }
1591
1592 void
1593 MidiRegionView::change_channel(uint8_t channel)
1594 {
1595         start_delta_command(_("change channel"));
1596         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1597                 Selection::iterator next = i;
1598                 ++next;
1599
1600                 CanvasNoteEvent* event = *i;
1601                 const boost::shared_ptr<Evoral::Note> copy(new Evoral::Note(*(event->note().get())));
1602
1603                 copy->set_channel(channel);
1604
1605                 command_remove_note(event);
1606                 command_add_note(copy, event->selected());
1607
1608                 i = next;
1609         }
1610
1611         apply_command();
1612 }
1613
1614
1615 void
1616 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
1617 {
1618         if (ev->note() && _mouse_state == EraseTouchDragging) {
1619                 start_delta_command(_("note entered"));
1620                 ev->selected(true);
1621                 _delta_command->remove(ev->note());
1622         } else if (_mouse_state == SelectTouchDragging) {
1623                 note_selected(ev, true);
1624         }
1625 }
1626
1627
1628 void
1629 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
1630 {
1631         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
1632         if (msrc)
1633                 display_model(msrc->model());
1634 }
1635
1636 void
1637 MidiRegionView::set_frame_color()
1638 {
1639         if (frame) {
1640                 if (_selected && should_show_selection) {
1641                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
1642                 } else {
1643                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
1644                 }
1645         }
1646 }
1647
1648 void
1649 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
1650 {
1651         switch (mode) {
1652         case AllChannels:
1653         case FilterChannels:
1654                 _force_channel = -1;
1655                 break;
1656         case ForceChannel:
1657                 _force_channel = mask;
1658                 mask = 0xFFFF; // Show all notes as active (below)
1659         };
1660
1661         // Update notes for selection
1662         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1663                 (*i)->on_channel_selection_change(mask);
1664         }
1665
1666         _last_channel_selection = mask;
1667 }
1668
1669 void
1670 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
1671 {
1672         _model_name         = model;
1673         _custom_device_mode = custom_device_mode;
1674         redisplay_model();
1675 }
1676