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 #include <ostream>
  24
  25 #include <gtkmm.h>
  26
  27 #include <gtkmm2ext/gtk_ui.h>
  28
  29 #include <sigc++/signal.h>
  30
  31 #include "pbd/memento_command.h"
  32 #include "pbd/stateful_diff_command.h"
  33
  34 #include "ardour/playlist.h"
  35 #include "ardour/tempo.h"
  36 #include "ardour/midi_region.h"
  37 #include "ardour/midi_source.h"
  38 #include "ardour/midi_model.h"
  39 #include "ardour/midi_patch_manager.h"
  40 #include "ardour/session.h"
  41
  42 #include "evoral/Parameter.hpp"
  43 #include "evoral/Control.hpp"
  44 #include "evoral/midi_util.h"
  45
  46 #include "automation_region_view.h"
  47 #include "automation_time_axis.h"
  48 #include "canvas-hit.h"
  49 #include "canvas-note.h"
  50 #include "canvas-program-change.h"
  51 #include "ghostregion.h"
  52 #include "gui_thread.h"
  53 #include "keyboard.h"
  54 #include "midi_cut_buffer.h"
  55 #include "midi_list_editor.h"
  56 #include "midi_region_view.h"
  57 #include "midi_streamview.h"
  58 #include "midi_time_axis.h"
  59 #include "midi_time_axis.h"
  60 #include "midi_util.h"
  61 #include "public_editor.h"
  62 #include "selection.h"
  63 #include "simpleline.h"
  64 #include "streamview.h"
  65 #include "utils.h"
  66
  67 #include "i18n.h"
  68
  69 using namespace ARDOUR;
  70 using namespace PBD;
  71 using namespace Editing;
  72 using namespace ArdourCanvas;
  73 using Gtkmm2ext::Keyboard;
  74
  75 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
  76                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color const & basic_color)
  77         : RegionView (parent, tv, r, spu, basic_color)
  78         , _force_channel(-1)
  79         , _last_channel_selection(0xFFFF)
  80         , _current_range_min(0)
  81         , _current_range_max(0)
  82         , _model_name(string())
  83         , _custom_device_mode(string())
  84         , _active_notes(0)
  85         , _note_group(new ArdourCanvas::Group(*parent))
  86         , _diff_command(0)
  87         , _ghost_note(0)
  88         , _drag_rect (0)
  89         , _mouse_state(None)
  90         , _pressed_button(0)
  91         , _sort_needed (true)
  92         , _optimization_iterator (_events.end())
  93         , _list_editor (0)
  94         , no_sound_notes (false)
  95 {
  96         _note_group->raise_to_top();
  97         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
  98 }
  99
 100 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
 101                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color,
 102                 TimeAxisViewItem::Visibility visibility)
 103         : RegionView (parent, tv, r, spu, basic_color, false, visibility)
 104         , _force_channel(-1)
 105         , _last_channel_selection(0xFFFF)
 106         , _model_name(string())
 107         , _custom_device_mode(string())
 108         , _active_notes(0)
 109         , _note_group(new ArdourCanvas::Group(*parent))
 110         , _diff_command(0)
 111         , _ghost_note(0)
 112         , _drag_rect (0)
 113         , _mouse_state(None)
 114         , _pressed_button(0)
 115         , _sort_needed (true)
 116         , _optimization_iterator (_events.end())
 117         , _list_editor (0)
 118         , no_sound_notes (false)
 119 {
 120         _note_group->raise_to_top();
 121         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 122 }
 123
 124 MidiRegionView::MidiRegionView (const MidiRegionView& other)
 125         : sigc::trackable(other)
 126         , RegionView (other)
 127         , _force_channel(-1)
 128         , _last_channel_selection(0xFFFF)
 129         , _model_name(string())
 130         , _custom_device_mode(string())
 131         , _active_notes(0)
 132         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 133         , _diff_command(0)
 134         , _ghost_note(0)
 135         , _drag_rect (0)
 136         , _mouse_state(None)
 137         , _pressed_button(0)
 138         , _sort_needed (true)
 139         , _optimization_iterator (_events.end())
 140         , _list_editor (0)
 141         , no_sound_notes (false)
 142 {
 143         Gdk::Color c;
 144         int r,g,b,a;
 145
 146         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 147         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 148
 149         init (c, false);
 150 }
 151
 152 MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<MidiRegion> region)
 153         : RegionView (other, boost::shared_ptr<Region> (region))
 154         , _force_channel(-1)
 155         , _last_channel_selection(0xFFFF)
 156         , _model_name(string())
 157         , _custom_device_mode(string())
 158         , _active_notes(0)
 159         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 160         , _diff_command(0)
 161         , _ghost_note(0)
 162         , _drag_rect (0)
 163         , _mouse_state(None)
 164         , _pressed_button(0)
 165         , _sort_needed (true)
 166         , _optimization_iterator (_events.end())
 167         , _list_editor (0)
 168         , no_sound_notes (false)
 169 {
 170         Gdk::Color c;
 171         int r,g,b,a;
 172
 173         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 174         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 175
 176         init (c, true);
 177 }
 178
 179 void
 180 MidiRegionView::init (Gdk::Color const & basic_color, bool wfd)
 181 {
 182         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 183
 184         CanvasNoteEvent::CanvasNoteEventDeleted.connect (note_delete_connection, MISSING_INVALIDATOR,
 185                                                          ui_bind (&MidiRegionView::maybe_remove_deleted_note_from_selection, this, _1),
 186                                                          gui_context());
 187
 188         if (wfd) {
 189                 midi_region()->midi_source(0)->load_model();
 190         }
 191
 192         _model = midi_region()->midi_source(0)->model();
 193         _enable_display = false;
 194
 195         RegionView::init (basic_color, false);
 196
 197         compute_colors (basic_color);
 198
 199         set_height (trackview.current_height());
 200
 201         region_muted ();
 202         region_sync_changed ();
 203         region_resized (ARDOUR::bounds_change);
 204         region_locked ();
 205
 206         reset_width_dependent_items (_pixel_width);
 207
 208         set_colors ();
 209
 210         _enable_display = true;
 211         if (_model) {
 212                 if (wfd) {
 213                         display_model (_model);
 214                 }
 215         }
 216
 217         group->raise_to_top();
 218         group->signal_event().connect (sigc::mem_fun (this, &MidiRegionView::canvas_event), false);
 219
 220         midi_view()->signal_channel_mode_changed().connect(
 221                         sigc::mem_fun(this, &MidiRegionView::midi_channel_mode_changed));
 222
 223         midi_view()->signal_midi_patch_settings_changed().connect(
 224                         sigc::mem_fun(this, &MidiRegionView::midi_patch_settings_changed));
 225
 226         trackview.editor().SnapChanged.connect (snap_changed_connection, invalidator (*this), ui_bind (&MidiRegionView::snap_changed, this), gui_context ());
 227 }
 228
 229 bool
 230 MidiRegionView::canvas_event(GdkEvent* ev)
 231 {
 232         if (!trackview.editor().internal_editing()) {
 233                 return false;
 234         }
 235
 236         /* XXX: note that until version 2.30, the GnomeCanvas did not propagate scroll events
 237            to its items, which means that ev->type == GDK_SCROLL will never be seen
 238         */
 239
 240         switch (ev->type) {
 241         case GDK_SCROLL:
 242                 return scroll (&ev->scroll);
 243
 244         case GDK_KEY_PRESS:
 245                 return key_press (&ev->key);
 246
 247         case GDK_KEY_RELEASE:
 248                 return key_release (&ev->key);
 249
 250         case GDK_BUTTON_PRESS:
 251                 return button_press (&ev->button);
 252
 253         case GDK_2BUTTON_PRESS:
 254                 return true;
 255
 256         case GDK_BUTTON_RELEASE:
 257                 return button_release (&ev->button);
 258
 259         case GDK_ENTER_NOTIFY:
 260                 return enter_notify (&ev->crossing);
 261
 262         case GDK_LEAVE_NOTIFY:
 263                 return leave_notify (&ev->crossing);
 264
 265         case GDK_MOTION_NOTIFY:
 266                 return motion (&ev->motion);
 267
 268         default:
 269                 break;
 270         }
 271
 272         return false;
 273 }
 274
 275 bool
 276 MidiRegionView::enter_notify (GdkEventCrossing* ev)
 277 {
 278         /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 279
 280         Keyboard::magic_widget_grab_focus();
 281         group->grab_focus();
 282
 283         if (trackview.editor().current_mouse_mode() == MouseRange) {
 284                 create_ghost_note (ev->x, ev->y);
 285         }
 286
 287         return false;
 288 }
 289
 290 bool
 291 MidiRegionView::leave_notify (GdkEventCrossing* ev)
 292 {
 293         trackview.editor().hide_verbose_canvas_cursor ();
 294         delete _ghost_note;
 295         _ghost_note = 0;
 296         return false;
 297 }
 298
 299 bool
 300 MidiRegionView::button_press (GdkEventButton* ev)
 301 {
 302         _last_x = ev->x;
 303         _last_y = ev->y;
 304         group->w2i (_last_x, _last_y);
 305
 306         if (_mouse_state != SelectTouchDragging && ev->button == 1) {
 307                 _pressed_button = ev->button;
 308                 _mouse_state = Pressed;
 309                 return true;
 310         }
 311
 312         _pressed_button = ev->button;
 313
 314         return true;
 315 }
 316
 317 bool
 318 MidiRegionView::button_release (GdkEventButton* ev)
 319 {
 320         double event_x, event_y;
 321         nframes64_t event_frame = 0;
 322
 323         event_x = ev->x;
 324         event_y = ev->y;
 325         group->w2i(event_x, event_y);
 326         group->ungrab(ev->time);
 327         event_frame = trackview.editor().pixel_to_frame(event_x);
 328
 329         if (ev->button == 3) {
 330                 return false;
 331         } else if (_pressed_button != 1) {
 332                 return false;
 333         }
 334
 335         switch (_mouse_state) {
 336         case Pressed: // Clicked
 337                 switch (trackview.editor().current_mouse_mode()) {
 338                 case MouseObject:
 339                 case MouseTimeFX:
 340                         clear_selection();
 341                         maybe_select_by_position (ev, event_x, event_y);
 342                         break;
 343
 344                 case MouseRange:
 345                 {
 346                         bool success;
 347                         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, trackview.editor().pixel_to_frame (event_x));
 348                         if (!success) {
 349                                 beats = 1;
 350                         }
 351                         create_note_at (event_x, event_y, beats, true);
 352                         break;
 353                 }
 354                 default:
 355                         break;
 356                 }
 357                 _mouse_state = None;
 358                 break;
 359         case SelectRectDragging: // Select drag done
 360                 _mouse_state = None;
 361                 delete _drag_rect;
 362                 _drag_rect = 0;
 363                 break;
 364
 365         case AddDragging: // Add drag done
 366                 _mouse_state = None;
 367                 if (_drag_rect->property_x2() > _drag_rect->property_x1() + 2) {
 368                         const double x      = _drag_rect->property_x1();
 369                         const double length = trackview.editor().pixel_to_frame
 370                                 (_drag_rect->property_x2() - _drag_rect->property_x1());
 371
 372                         create_note_at (x, _drag_rect->property_y1(), frames_to_beats(length), false);
 373                 }
 374
 375                 delete _drag_rect;
 376                 _drag_rect = 0;
 377
 378                 create_ghost_note (ev->x, ev->y);
 379
 380         default:
 381                 break;
 382         }
 383
 384         return false;
 385 }
 386
 387 bool
 388 MidiRegionView::motion (GdkEventMotion* ev)
 389 {
 390         double event_x, event_y;
 391         nframes64_t event_frame = 0;
 392
 393         event_x = ev->x;
 394         event_y = ev->y;
 395         group->w2i(event_x, event_y);
 396
 397         // convert event_x to global frame
 398         event_frame = trackview.editor().pixel_to_frame(event_x) + _region->position();
 399         trackview.editor().snap_to(event_frame);
 400         // convert event_frame back to local coordinates relative to position
 401         event_frame -= _region->position();
 402
 403         if (_ghost_note) {
 404                 update_ghost_note (ev->x, ev->y);
 405         }
 406
 407         /* any motion immediately hides velocity text that may have been visible */
 408
 409         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 410                 (*i)->hide_velocity ();
 411         }
 412
 413         switch (_mouse_state) {
 414         case Pressed: // Maybe start a drag, if we've moved a bit
 415
 416                 if (fabs (event_x - _last_x) < 1 && fabs (event_y - _last_y) < 1) {
 417                         /* no appreciable movement since the button was pressed */
 418                         return false;
 419                 }
 420
 421                 // Select drag start
 422                 if (_pressed_button == 1 && trackview.editor().current_mouse_mode() == MouseObject) {
 423                         group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 424                                     Gdk::Cursor(Gdk::FLEUR), ev->time);
 425                         _last_x = event_x;
 426                         _last_y = event_y;
 427                         _drag_start_x = event_x;
 428                         _drag_start_y = event_y;
 429
 430                         _drag_rect = new ArdourCanvas::SimpleRect(*group);
 431                         _drag_rect->property_x1() = event_x;
 432                         _drag_rect->property_y1() = event_y;
 433                         _drag_rect->property_x2() = event_x;
 434                         _drag_rect->property_y2() = event_y;
 435                         _drag_rect->property_outline_what() = 0xFF;
 436                         _drag_rect->property_outline_color_rgba()
 437                                 = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 438                         _drag_rect->property_fill_color_rgba()
 439                                 = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 440
 441                         _mouse_state = SelectRectDragging;
 442                         return true;
 443
 444                         // Add note drag start
 445                 } else if (trackview.editor().internal_editing()) {
 446
 447                         delete _ghost_note;
 448                         _ghost_note = 0;
 449
 450                         group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 451                                     Gdk::Cursor(Gdk::FLEUR), ev->time);
 452                         _last_x = event_x;
 453                         _last_y = event_y;
 454                         _drag_start_x = event_x;
 455                         _drag_start_y = event_y;
 456
 457                         _drag_rect = new ArdourCanvas::SimpleRect(*group);
 458                         _drag_rect->property_x1() = trackview.editor().frame_to_pixel(event_frame);
 459
 460                         _drag_rect->property_y1() = midi_stream_view()->note_to_y(
 461                                 midi_stream_view()->y_to_note(event_y));
 462                         _drag_rect->property_x2() = trackview.editor().frame_to_pixel(event_frame);
 463                         _drag_rect->property_y2() = _drag_rect->property_y1()
 464                                 + floor(midi_stream_view()->note_height());
 465                         _drag_rect->property_outline_what() = 0xFF;
 466                         _drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 467                         _drag_rect->property_fill_color_rgba()    = 0xFFFFFF66;
 468
 469                         _mouse_state = AddDragging;
 470                         return true;
 471                 }
 472
 473                 return false;
 474
 475         case SelectRectDragging: // Select drag motion
 476         case AddDragging: // Add note drag motion
 477                 if (ev->is_hint) {
 478                         int t_x;
 479                         int t_y;
 480                         GdkModifierType state;
 481                         gdk_window_get_pointer(ev->window, &t_x, &t_y, &state);
 482                         event_x = t_x;
 483                         event_y = t_y;
 484                 }
 485
 486                 if (_mouse_state == AddDragging)
 487                         event_x = trackview.editor().frame_to_pixel(event_frame);
 488
 489                 if (_drag_rect) {
 490                         if (event_x > _drag_start_x)
 491                                 _drag_rect->property_x2() = event_x;
 492                         else
 493                                 _drag_rect->property_x1() = event_x;
 494                 }
 495
 496                 if (_drag_rect && _mouse_state == SelectRectDragging) {
 497                         if (event_y > _drag_start_y)
 498                                 _drag_rect->property_y2() = event_y;
 499                         else
 500                                 _drag_rect->property_y1() = event_y;
 501
 502                         update_drag_selection(_drag_start_x, event_x, _drag_start_y, event_y);
 503                 }
 504
 505                 _last_x = event_x;
 506                 _last_y = event_y;
 507
 508         case SelectTouchDragging:
 509                 return false;
 510
 511         default:
 512                 break;
 513         }
 514
 515         return false;
 516 }
 517
 518
 519 bool
 520 MidiRegionView::scroll (GdkEventScroll* ev)
 521 {
 522         if (_selection.empty()) {
 523                 return false;
 524         }
 525
 526         trackview.editor().hide_verbose_canvas_cursor ();
 527
 528         bool fine = !Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier);
 529
 530         if (ev->direction == GDK_SCROLL_UP) {
 531                 change_velocities (true, fine, false);
 532         } else if (ev->direction == GDK_SCROLL_DOWN) {
 533                 change_velocities (false, fine, false);
 534         }
 535         return true;
 536 }
 537
 538 bool
 539 MidiRegionView::key_press (GdkEventKey* ev)
 540 {
 541         /* since GTK bindings are generally activated on press, and since
 542            detectable auto-repeat is the name of the game and only sends
 543            repeated presses, carry out key actions at key press, not release.
 544         */
 545
 546         if (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R){
 547                 _mouse_state = SelectTouchDragging;
 548                 return true;
 549
 550         } else if (ev->keyval == GDK_Escape) {
 551                 clear_selection();
 552                 _mouse_state = None;
 553
 554         } else if (ev->keyval == GDK_comma || ev->keyval == GDK_period) {
 555
 556                 bool start = (ev->keyval == GDK_comma);
 557                 bool end = (ev->keyval == GDK_period);
 558                 bool shorter = Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier);
 559                 bool fine = Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 560
 561                 change_note_lengths (fine, shorter, start, end);
 562
 563                 return true;
 564
 565         } else if (ev->keyval == GDK_Delete) {
 566
 567                 delete_selection();
 568                 return true;
 569
 570         } else if (ev->keyval == GDK_Tab) {
 571
 572                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 573                         goto_previous_note ();
 574                 } else {
 575                         goto_next_note ();
 576                 }
 577                 return true;
 578
 579         } else if (ev->keyval == GDK_Up) {
 580
 581                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 582                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 583
 584                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 585                         change_velocities (true, fine, allow_smush);
 586                 } else {
 587                         transpose (true, fine, allow_smush);
 588                 }
 589                 return true;
 590
 591         } else if (ev->keyval == GDK_Down) {
 592
 593                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 594                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 595
 596                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 597                         change_velocities (false, fine, allow_smush);
 598                 } else {
 599                         transpose (false, fine, allow_smush);
 600                 }
 601                 return true;
 602
 603         } else if (ev->keyval == GDK_Left) {
 604
 605                 nudge_notes (false);
 606                 return true;
 607
 608         } else if (ev->keyval == GDK_Right) {
 609
 610                 nudge_notes (true);
 611                 return true;
 612
 613         } else if (ev->keyval == GDK_Control_L) {
 614                 return true;
 615
 616         } else if (ev->keyval == GDK_r) {
 617                 /* yes, this steals r */
 618                 if (midi_view()->midi_track()->step_editing()) {
 619                         midi_view()->step_edit_rest ();
 620                         return true;
 621                 }
 622         }
 623
 624         return false;
 625 }
 626
 627 bool
 628 MidiRegionView::key_release (GdkEventKey* ev)
 629 {
 630         if (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R) {
 631                 _mouse_state = None;
 632                 return true;
 633         }
 634         return false;
 635 }
 636
 637 void
 638 MidiRegionView::show_list_editor ()
 639 {
 640         if (!_list_editor) {
 641                 _list_editor = new MidiListEditor (trackview.session(), midi_region());
 642         }
 643         _list_editor->present ();
 644 }
 645
 646 /** Add a note to the model, and the view, at a canvas (click) coordinate.
 647  * \param x horizontal position in pixels
 648  * \param y vertical position in pixels
 649  * \param length duration of the note in beats, which will be snapped to the grid
 650  * \param sh true to make the note 1 frame shorter than the snapped version of \a length.
 651  */
 652 void
 653 MidiRegionView::create_note_at(double x, double y, double length, bool sh)
 654 {
 655         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 656         MidiStreamView* const view = mtv->midi_view();
 657
 658         double note = midi_stream_view()->y_to_note(y);
 659
 660         assert(note >= 0.0);
 661         assert(note <= 127.0);
 662
 663         // Start of note in frames relative to region start
 664         nframes64_t const start_frames = snap_frame_to_frame(trackview.editor().pixel_to_frame(x));
 665         assert(start_frames >= 0);
 666
 667         // Snap length
 668         length = frames_to_beats(
 669                         snap_frame_to_frame(start_frames + beats_to_frames(length)) - start_frames);
 670
 671         assert (length != 0);
 672
 673         if (sh) {
 674                 length = frames_to_beats (beats_to_frames (length) - 1);
 675         }
 676
 677         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
 678         int chn_cnt = 0;
 679         uint8_t channel = 0;
 680
 681         /* pick the highest selected channel, unless all channels are selected,
 682            which is interpreted to mean channel 1 (zero)
 683         */
 684
 685         for (uint16_t i = 0; i < 16; ++i) {
 686                 if (chn_mask & (1<<i)) {
 687                         channel = i;
 688                         chn_cnt++;
 689                 }
 690         }
 691
 692         if (chn_cnt == 16) {
 693                 channel = 0;
 694         }
 695
 696         const boost::shared_ptr<NoteType> new_note (new NoteType (channel,
 697                                                                   frames_to_beats(start_frames + _region->start()), length,
 698                                                                   (uint8_t)note, 0x40));
 699
 700         if (_model->contains (new_note)) {
 701                 return;
 702         }
 703
 704         view->update_note_range(new_note->note());
 705
 706         MidiModel::DiffCommand* cmd = _model->new_diff_command("add note");
 707         cmd->add(new_note);
 708         _model->apply_command(*trackview.session(), cmd);
 709
 710         play_midi_note (new_note);
 711 }
 712
 713 void
 714 MidiRegionView::clear_events()
 715 {
 716         clear_selection();
 717
 718         MidiGhostRegion* gr;
 719         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 720                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 721                         gr->clear_events();
 722                 }
 723         }
 724
 725         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 726                 delete *i;
 727         }
 728
 729         _events.clear();
 730         _pgm_changes.clear();
 731         _sys_exes.clear();
 732         _optimization_iterator = _events.end();
 733 }
 734
 735
 736 void
 737 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 738 {
 739         _model = model;
 740         content_connection.disconnect ();
 741         _model->ContentsChanged.connect (content_connection, invalidator (*this), boost::bind (&MidiRegionView::redisplay_model, this), gui_context());
 742
 743         clear_events ();
 744
 745         if (_enable_display) {
 746                 redisplay_model();
 747         }
 748 }
 749
 750 void
 751 MidiRegionView::start_diff_command(string name)
 752 {
 753         if (!_diff_command) {
 754                 _diff_command = _model->new_diff_command(name);
 755         }
 756 }
 757
 758 void
 759 MidiRegionView::diff_add_note(const boost::shared_ptr<NoteType> note, bool selected, bool show_velocity)
 760 {
 761         if (_diff_command) {
 762                 _diff_command->add(note);
 763         }
 764         if (selected) {
 765                 _marked_for_selection.insert(note);
 766         }
 767         if (show_velocity) {
 768                 _marked_for_velocity.insert(note);
 769         }
 770 }
 771
 772 void
 773 MidiRegionView::diff_remove_note(ArdourCanvas::CanvasNoteEvent* ev)
 774 {
 775         if (_diff_command && ev->note()) {
 776                 _diff_command->remove(ev->note());
 777         }
 778 }
 779
 780 void
 781 MidiRegionView::diff_add_change (ArdourCanvas::CanvasNoteEvent* ev,
 782                                  MidiModel::DiffCommand::Property property,
 783                                  uint8_t val)
 784 {
 785         if (_diff_command) {
 786                 _diff_command->change (ev->note(), property, val);
 787         }
 788 }
 789
 790 void
 791 MidiRegionView::diff_add_change (ArdourCanvas::CanvasNoteEvent* ev,
 792                                  MidiModel::DiffCommand::Property property,
 793                                  Evoral::MusicalTime val)
 794 {
 795         if (_diff_command) {
 796                 _diff_command->change (ev->note(), property, val);
 797         }
 798 }
 799
 800 void
 801 MidiRegionView::apply_diff ()
 802 {
 803         bool add_or_remove;
 804
 805         if (!_diff_command) {
 806                 return;
 807         }
 808
 809         if ((add_or_remove = _diff_command->adds_or_removes())) {
 810                 // Mark all selected notes for selection when model reloads
 811                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 812                         _marked_for_selection.insert((*i)->note());
 813                 }
 814         }
 815
 816         _model->apply_command(*trackview.session(), _diff_command);
 817         _diff_command = 0;
 818         midi_view()->midi_track()->playlist_modified();
 819
 820
 821         if (add_or_remove) {
 822                 _marked_for_selection.clear();
 823         }
 824
 825         _marked_for_velocity.clear();
 826 }
 827
 828 void
 829 MidiRegionView::apply_diff_as_subcommand()
 830 {
 831         bool add_or_remove;
 832
 833         if (!_diff_command) {
 834                 return;
 835         }
 836
 837         if ((add_or_remove = _diff_command->adds_or_removes())) {
 838                 // Mark all selected notes for selection when model reloads
 839                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 840                         _marked_for_selection.insert((*i)->note());
 841                 }
 842         }
 843
 844         _model->apply_command_as_subcommand(*trackview.session(), _diff_command);
 845         _diff_command = 0;
 846         midi_view()->midi_track()->playlist_modified();
 847
 848         if (add_or_remove) {
 849                 _marked_for_selection.clear();
 850         }
 851         _marked_for_velocity.clear();
 852 }
 853
 854
 855 void
 856 MidiRegionView::abort_command()
 857 {
 858         delete _diff_command;
 859         _diff_command = 0;
 860         clear_selection();
 861 }
 862
 863 CanvasNoteEvent*
 864 MidiRegionView::find_canvas_note (boost::shared_ptr<NoteType> note)
 865 {
 866         if (_optimization_iterator != _events.end()) {
 867                 ++_optimization_iterator;
 868         }
 869
 870         if (_optimization_iterator != _events.end() && (*_optimization_iterator)->note() == note) {
 871                 return *_optimization_iterator;
 872         }
 873
 874         for (_optimization_iterator = _events.begin(); _optimization_iterator != _events.end(); ++_optimization_iterator) {
 875                 if ((*_optimization_iterator)->note() == note) {
 876                         return *_optimization_iterator;
 877                 }
 878         }
 879
 880         return 0;
 881 }
 882
 883 void
 884 MidiRegionView::get_events (Events& e, Evoral::Sequence<Evoral::MusicalTime>::NoteOperator op, uint8_t val, int chan_mask)
 885 {
 886         MidiModel::Notes notes;
 887         _model->get_notes (notes, op, val, chan_mask);
 888
 889         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
 890                 CanvasNoteEvent* cne = find_canvas_note (*n);
 891                 if (cne) {
 892                         e.push_back (cne);
 893                 }
 894         }
 895 }
 896
 897 void
 898 MidiRegionView::redisplay_model()
 899 {
 900         // Don't redisplay the model if we're currently recording and displaying that
 901         if (_active_notes) {
 902                 return;
 903         }
 904
 905         if (!_model) {
 906                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
 907                 return;
 908         }
 909
 910         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 911                 (*i)->invalidate ();
 912         }
 913
 914         MidiModel::ReadLock lock(_model->read_lock());
 915
 916         MidiModel::Notes& notes (_model->notes());
 917         _optimization_iterator = _events.begin();
 918
 919         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
 920
 921                 boost::shared_ptr<NoteType> note (*n);
 922                 CanvasNoteEvent* cne;
 923                 bool visible;
 924
 925                 if (note_in_region_range (note, visible)) {
 926
 927                         if ((cne = find_canvas_note (note)) != 0) {
 928
 929                                 cne->validate ();
 930
 931                                 CanvasNote* cn;
 932                                 CanvasHit* ch;
 933
 934                                 if ((cn = dynamic_cast<CanvasNote*>(cne)) != 0) {
 935                                         update_note (cn);
 936                                 } else if ((ch = dynamic_cast<CanvasHit*>(cne)) != 0) {
 937                                         update_hit (ch);
 938                                 }
 939
 940                                 if (visible) {
 941                                         cne->show ();
 942                                 } else {
 943                                         cne->hide ();
 944                                 }
 945
 946                         } else {
 947
 948                                 add_note (note, visible);
 949                         }
 950
 951                 } else {
 952
 953                         if ((cne = find_canvas_note (note)) != 0) {
 954                                 cne->validate ();
 955                                 cne->hide ();
 956                         }
 957                 }
 958         }
 959
 960
 961         /* remove note items that are no longer valid */
 962
 963         for (Events::iterator i = _events.begin(); i != _events.end(); ) {
 964                 if (!(*i)->valid ()) {
 965                         delete *i;
 966                         i = _events.erase (i);
 967                 } else {
 968                         ++i;
 969                 }
 970         }
 971
 972         _pgm_changes.clear();
 973         _sys_exes.clear();
 974
 975         display_sysexes();
 976         display_program_changes();
 977
 978         _marked_for_selection.clear ();
 979         _marked_for_velocity.clear ();
 980
 981         /* we may have caused _events to contain things out of order (e.g. if a note
 982            moved earlier or later). we don't generally need them in time order, but
 983            make a note that a sort is required for those cases that require it.
 984         */
 985
 986         _sort_needed = true;
 987 }
 988
 989 void
 990 MidiRegionView::display_program_changes()
 991 {
 992         boost::shared_ptr<Evoral::Control> control = _model->control(MidiPgmChangeAutomation);
 993         if (!control) {
 994                 return;
 995         }
 996
 997         Glib::Mutex::Lock lock (control->list()->lock());
 998
 999         uint8_t channel = control->parameter().channel();
1000
1001         for (AutomationList::const_iterator event = control->list()->begin();
1002                         event != control->list()->end(); ++event) {
1003                 double event_time     = (*event)->when;
1004                 double program_number = floor((*event)->value + 0.5);
1005
1006                 // Get current value of bank select MSB at time of the program change
1007                 Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1008                 boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1009                 uint8_t msb = 0;
1010                 if (msb_control != 0) {
1011                         msb = uint8_t(floor(msb_control->get_float(true, event_time) + 0.5));
1012                 }
1013
1014                 // Get current value of bank select LSB at time of the program change
1015                 Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1016                 boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1017                 uint8_t lsb = 0;
1018                 if (lsb_control != 0) {
1019                         lsb = uint8_t(floor(lsb_control->get_float(true, event_time) + 0.5));
1020                 }
1021
1022                 MIDI::Name::PatchPrimaryKey patch_key(msb, lsb, program_number);
1023
1024                 boost::shared_ptr<MIDI::Name::Patch> patch =
1025                         MIDI::Name::MidiPatchManager::instance().find_patch(
1026                                         _model_name, _custom_device_mode, channel, patch_key);
1027
1028                 PCEvent program_change(event_time, uint8_t(program_number), channel);
1029
1030                 if (patch != 0) {
1031                         add_pgm_change(program_change, patch->name());
1032                 } else {
1033                         char buf[4];
1034                         snprintf(buf, 4, "%d", int(program_number));
1035                         add_pgm_change(program_change, buf);
1036                 }
1037         }
1038 }
1039
1040 void
1041 MidiRegionView::display_sysexes()
1042 {
1043         for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
1044                 Evoral::MusicalTime time = (*i)->time();
1045                 assert(time >= 0);
1046
1047                 ostringstream str;
1048                 str << hex;
1049                 for (uint32_t b = 0; b < (*i)->size(); ++b) {
1050                         str << int((*i)->buffer()[b]);
1051                         if (b != (*i)->size() -1) {
1052                                 str << " ";
1053                         }
1054                 }
1055                 string text = str.str();
1056
1057                 ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1058
1059                 const double x = trackview.editor().frame_to_pixel(beats_to_frames(time));
1060
1061                 double height = midi_stream_view()->contents_height();
1062
1063                 boost::shared_ptr<CanvasSysEx> sysex = boost::shared_ptr<CanvasSysEx>(
1064                                 new CanvasSysEx(*this, *group, text, height, x, 1.0));
1065
1066                 // Show unless program change is beyond the region bounds
1067                 if (time - _region->start() >= _region->length() || time < _region->start()) {
1068                         sysex->hide();
1069                 } else {
1070                         sysex->show();
1071                 }
1072
1073                 _sys_exes.push_back(sysex);
1074         }
1075 }
1076
1077
1078 MidiRegionView::~MidiRegionView ()
1079 {
1080         in_destructor = true;
1081
1082         trackview.editor().hide_verbose_canvas_cursor ();
1083
1084         note_delete_connection.disconnect ();
1085
1086         delete _list_editor;
1087
1088         RegionViewGoingAway (this); /* EMIT_SIGNAL */
1089
1090         if (_active_notes) {
1091                 end_write();
1092         }
1093
1094         _selection.clear();
1095         clear_events();
1096         delete _note_group;
1097         delete _diff_command;
1098 }
1099
1100 void
1101 MidiRegionView::region_resized (const PropertyChange& what_changed)
1102 {
1103         RegionView::region_resized(what_changed);
1104
1105         if (what_changed.contains (ARDOUR::Properties::position)) {
1106                 set_duration(_region->length(), 0);
1107                 if (_enable_display) {
1108                         redisplay_model();
1109                 }
1110         }
1111 }
1112
1113 void
1114 MidiRegionView::reset_width_dependent_items (double pixel_width)
1115 {
1116         RegionView::reset_width_dependent_items(pixel_width);
1117         assert(_pixel_width == pixel_width);
1118
1119         if (_enable_display) {
1120                 redisplay_model();
1121         }
1122 }
1123
1124 void
1125 MidiRegionView::set_height (double height)
1126 {
1127         static const double FUDGE = 2.0;
1128         const double old_height = _height;
1129         RegionView::set_height(height);
1130         _height = height - FUDGE;
1131
1132         apply_note_range(midi_stream_view()->lowest_note(),
1133                          midi_stream_view()->highest_note(),
1134                          height != old_height + FUDGE);
1135
1136         if (name_pixbuf) {
1137                 name_pixbuf->raise_to_top();
1138         }
1139 }
1140
1141
1142 /** Apply the current note range from the stream view
1143  * by repositioning/hiding notes as necessary
1144  */
1145 void
1146 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
1147 {
1148         if (!_enable_display) {
1149                 return;
1150         }
1151
1152         if (!force && _current_range_min == min && _current_range_max == max) {
1153                 return;
1154         }
1155
1156         _current_range_min = min;
1157         _current_range_max = max;
1158
1159         for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
1160                 CanvasNoteEvent* event = *i;
1161                 boost::shared_ptr<NoteType> note (event->note());
1162
1163                 if (note->note() < _current_range_min ||
1164                     note->note() > _current_range_max) {
1165                         event->hide();
1166                 } else {
1167                         event->show();
1168                 }
1169
1170                 if (CanvasNote* cnote = dynamic_cast<CanvasNote*>(event)) {
1171
1172                         const double y1 = midi_stream_view()->note_to_y(note->note());
1173                         const double y2 = y1 + floor(midi_stream_view()->note_height());
1174
1175                         cnote->property_y1() = y1;
1176                         cnote->property_y2() = y2;
1177
1178                 } else if (CanvasHit* chit = dynamic_cast<CanvasHit*>(event)) {
1179
1180                         double x = trackview.editor().frame_to_pixel(
1181                                 beats_to_frames(note->time()) - _region->start());
1182                         const double diamond_size = midi_stream_view()->note_height() / 2.0;
1183                         double y = midi_stream_view()->note_to_y(event->note()->note())
1184                                 + ((diamond_size-2.0) / 4.0);
1185
1186                         chit->set_height (diamond_size);
1187                         chit->move (x - chit->x1(), y - chit->y1());
1188                         chit->show ();
1189                 }
1190         }
1191 }
1192
1193 GhostRegion*
1194 MidiRegionView::add_ghost (TimeAxisView& tv)
1195 {
1196         CanvasNote* note;
1197
1198         double unit_position = _region->position () / samples_per_unit;
1199         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
1200         MidiGhostRegion* ghost;
1201
1202         if (mtv && mtv->midi_view()) {
1203                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group
1204                    to allow having midi notes on top of note lines and waveforms.
1205                  */
1206                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
1207         } else {
1208                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
1209         }
1210
1211         ghost->set_height ();
1212         ghost->set_duration (_region->length() / samples_per_unit);
1213         ghosts.push_back (ghost);
1214
1215         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1216                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
1217                         ghost->add_note(note);
1218                 }
1219         }
1220
1221         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&RegionView::remove_ghost, this, _1), gui_context());
1222
1223         return ghost;
1224 }
1225
1226
1227 /** Begin tracking note state for successive calls to add_event
1228  */
1229 void
1230 MidiRegionView::begin_write()
1231 {
1232         assert(!_active_notes);
1233         _active_notes = new CanvasNote*[128];
1234         for (unsigned i=0; i < 128; ++i) {
1235                 _active_notes[i] = 0;
1236         }
1237 }
1238
1239
1240 /** Destroy note state for add_event
1241  */
1242 void
1243 MidiRegionView::end_write()
1244 {
1245         delete[] _active_notes;
1246         _active_notes = 0;
1247         _marked_for_selection.clear();
1248         _marked_for_velocity.clear();
1249 }
1250
1251
1252 /** Resolve an active MIDI note (while recording).
1253  */
1254 void
1255 MidiRegionView::resolve_note(uint8_t note, double end_time)
1256 {
1257         if (midi_view()->note_mode() != Sustained) {
1258                 return;
1259         }
1260
1261         if (_active_notes && _active_notes[note]) {
1262                 const nframes64_t end_time_frames = beats_to_frames(end_time);
1263                 _active_notes[note]->property_x2() = trackview.editor().frame_to_pixel(end_time_frames);
1264                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
1265                 _active_notes[note] = 0;
1266         }
1267 }
1268
1269
1270 /** Extend active notes to rightmost edge of region (if length is changed)
1271  */
1272 void
1273 MidiRegionView::extend_active_notes()
1274 {
1275         if (!_active_notes) {
1276                 return;
1277         }
1278
1279         for (unsigned i=0; i < 128; ++i) {
1280                 if (_active_notes[i]) {
1281                         _active_notes[i]->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1282                 }
1283         }
1284 }
1285
1286 void
1287 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
1288 {
1289         if (no_sound_notes || !trackview.editor().sound_notes()) {
1290                 return;
1291         }
1292
1293         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1294         assert(route_ui);
1295
1296         route_ui->midi_track()->write_immediate_event(
1297                         note->on_event().size(), note->on_event().buffer());
1298
1299         const double note_length_beats = (note->off_event().time() - note->on_event().time());
1300         nframes_t note_length_ms = beats_to_frames(note_length_beats)
1301                         * (1000 / (double)route_ui->session()->nominal_frame_rate());
1302         Glib::signal_timeout().connect(sigc::bind(sigc::mem_fun(this, &MidiRegionView::play_midi_note_off), note),
1303                         note_length_ms, G_PRIORITY_DEFAULT);
1304 }
1305
1306 bool
1307 MidiRegionView::play_midi_note_off(boost::shared_ptr<NoteType> note)
1308 {
1309         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1310         assert(route_ui);
1311
1312         route_ui->midi_track()->write_immediate_event(
1313                         note->off_event().size(), note->off_event().buffer());
1314
1315         return false;
1316 }
1317
1318 bool
1319 MidiRegionView::note_in_region_range(const boost::shared_ptr<NoteType> note, bool& visible) const
1320 {
1321         const nframes64_t note_start_frames = beats_to_frames(note->time());
1322
1323         bool outside = (note_start_frames - _region->start() >= _region->length()) ||
1324                 (note_start_frames < _region->start());
1325
1326         visible = (note->note() >= midi_stream_view()->lowest_note()) &&
1327                 (note->note() <= midi_stream_view()->highest_note());
1328
1329         return !outside;
1330 }
1331
1332 void
1333 MidiRegionView::update_note (CanvasNote* ev)
1334 {
1335         boost::shared_ptr<NoteType> note = ev->note();
1336
1337         const nframes64_t note_start_frames = beats_to_frames(note->time());
1338         const nframes64_t note_end_frames   = beats_to_frames(note->end_time());
1339
1340         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1341         const double y1 = midi_stream_view()->note_to_y(note->note());
1342         const double note_endpixel = trackview.editor().frame_to_pixel(note_end_frames - _region->start());
1343
1344         ev->property_x1() = x;
1345         ev->property_y1() = y1;
1346         if (note->length() > 0) {
1347                 ev->property_x2() = note_endpixel;
1348         } else {
1349                 ev->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1350         }
1351         ev->property_y2() = y1 + floor(midi_stream_view()->note_height());
1352
1353         if (note->length() == 0) {
1354                 if (_active_notes) {
1355                         assert(note->note() < 128);
1356                         // If this note is already active there's a stuck note,
1357                         // finish the old note rectangle
1358                         if (_active_notes[note->note()]) {
1359                                 CanvasNote* const old_rect = _active_notes[note->note()];
1360                                 boost::shared_ptr<NoteType> old_note = old_rect->note();
1361                                 old_rect->property_x2() = x;
1362                                 old_rect->property_outline_what() = (guint32) 0xF;
1363                         }
1364                         _active_notes[note->note()] = ev;
1365                 }
1366                 /* outline all but right edge */
1367                 ev->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
1368         } else {
1369                 /* outline all edges */
1370                 ev->property_outline_what() = (guint32) 0xF;
1371         }
1372 }
1373
1374 void
1375 MidiRegionView::update_hit (CanvasHit* ev)
1376 {
1377         boost::shared_ptr<NoteType> note = ev->note();
1378
1379         const nframes64_t note_start_frames = beats_to_frames(note->time());
1380         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1381         const double diamond_size = midi_stream_view()->note_height() / 2.0;
1382         const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
1383
1384         ev->move_to (x, y);
1385 }
1386
1387 /** Add a MIDI note to the view (with length).
1388  *
1389  * If in sustained mode, notes with length 0 will be considered active
1390  * notes, and resolve_note should be called when the corresponding note off
1391  * event arrives, to properly display the note.
1392  */
1393 void
1394 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note, bool visible)
1395 {
1396         CanvasNoteEvent* event = 0;
1397
1398         assert(note->time() >= 0);
1399         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
1400
1401         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1402
1403         if (midi_view()->note_mode() == Sustained) {
1404
1405                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
1406
1407                 update_note (ev_rect);
1408
1409                 event = ev_rect;
1410
1411                 MidiGhostRegion* gr;
1412
1413                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
1414                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
1415                                 gr->add_note(ev_rect);
1416                         }
1417                 }
1418
1419         } else if (midi_view()->note_mode() == Percussive) {
1420
1421                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
1422
1423                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
1424
1425                 update_hit (ev_diamond);
1426
1427                 event = ev_diamond;
1428
1429         } else {
1430                 event = 0;
1431         }
1432
1433         if (event) {
1434                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
1435                         note_selected(event, true);
1436                 }
1437
1438                 if (_marked_for_velocity.find(note) != _marked_for_velocity.end()) {
1439                         event->show_velocity();
1440                 }
1441                 event->on_channel_selection_change(_last_channel_selection);
1442                 _events.push_back(event);
1443
1444                 if (visible) {
1445                         event->show();
1446                 } else {
1447                         event->hide ();
1448                 }
1449         }
1450 }
1451
1452 void
1453 MidiRegionView::add_note (uint8_t channel, uint8_t number, uint8_t velocity,
1454                           Evoral::MusicalTime pos, Evoral::MusicalTime len)
1455 {
1456         boost::shared_ptr<NoteType> new_note (new NoteType (channel, pos, len, number, velocity));
1457
1458         start_diff_command (_("step add"));
1459         diff_add_note (new_note, true, false);
1460         apply_diff();
1461
1462         /* potentially extend region to hold new note */
1463
1464         nframes64_t end_frame = _region->position() + beats_to_frames (new_note->end_time());
1465         nframes64_t region_end = _region->position() + _region->length() - 1;
1466
1467         if (end_frame > region_end) {
1468                 _region->set_length (end_frame, this);
1469         } else {
1470                 redisplay_model ();
1471         }
1472 }
1473
1474 void
1475 MidiRegionView::add_pgm_change(PCEvent& program, const string& displaytext)
1476 {
1477         assert(program.time >= 0);
1478
1479         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1480         const double x = trackview.editor().frame_to_pixel(beats_to_frames(program.time));
1481
1482         double height = midi_stream_view()->contents_height();
1483
1484         boost::shared_ptr<CanvasProgramChange> pgm_change = boost::shared_ptr<CanvasProgramChange>(
1485                         new CanvasProgramChange(*this, *group,
1486                                         displaytext,
1487                                         height,
1488                                         x, 1.0,
1489                                         _model_name,
1490                                         _custom_device_mode,
1491                                         program.time, program.channel, program.value));
1492
1493         // Show unless program change is beyond the region bounds
1494         if (program.time - _region->start() >= _region->length() || program.time < _region->start()) {
1495                 pgm_change->hide();
1496         } else {
1497                 pgm_change->show();
1498         }
1499
1500         _pgm_changes.push_back(pgm_change);
1501 }
1502
1503 void
1504 MidiRegionView::get_patch_key_at(double time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1505 {
1506         cerr << "getting patch key at " << time << " for channel " << channel << endl;
1507         Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1508         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1509         float msb = -1.0;
1510         if (msb_control != 0) {
1511                 msb = int(msb_control->get_float(true, time));
1512                 cerr << "got msb " << msb;
1513         }
1514
1515         Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1516         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1517         float lsb = -1.0;
1518         if (lsb_control != 0) {
1519                 lsb = lsb_control->get_float(true, time);
1520                 cerr << " got lsb " << lsb;
1521         }
1522
1523         Evoral::Parameter program_change(MidiPgmChangeAutomation, channel, 0);
1524         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1525         float program_number = -1.0;
1526         if (program_control != 0) {
1527                 program_number = program_control->get_float(true, time);
1528                 cerr << " got program " << program_number << endl;
1529         }
1530
1531         key.msb = (int) floor(msb + 0.5);
1532         key.lsb = (int) floor(lsb + 0.5);
1533         key.program_number = (int) floor(program_number + 0.5);
1534         assert(key.is_sane());
1535 }
1536
1537
1538 void
1539 MidiRegionView::alter_program_change(PCEvent& old_program, const MIDI::Name::PatchPrimaryKey& new_patch)
1540 {
1541         // TODO: Get the real event here and alter them at the original times
1542         Evoral::Parameter bank_select_msb(MidiCCAutomation, old_program.channel, MIDI_CTL_MSB_BANK);
1543         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1544         if (msb_control != 0) {
1545                 msb_control->set_float(float(new_patch.msb), true, old_program.time);
1546         }
1547
1548         // TODO: Get the real event here and alter them at the original times
1549         Evoral::Parameter bank_select_lsb(MidiCCAutomation, old_program.channel, MIDI_CTL_LSB_BANK);
1550         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1551         if (lsb_control != 0) {
1552                 lsb_control->set_float(float(new_patch.lsb), true, old_program.time);
1553         }
1554
1555         Evoral::Parameter program_change(MidiPgmChangeAutomation, old_program.channel, 0);
1556         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1557
1558         assert(program_control != 0);
1559         program_control->set_float(float(new_patch.program_number), true, old_program.time);
1560
1561         redisplay_model();
1562 }
1563
1564 void
1565 MidiRegionView::program_selected(CanvasProgramChange& program, const MIDI::Name::PatchPrimaryKey& new_patch)
1566 {
1567         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1568         alter_program_change(program_change_event, new_patch);
1569 }
1570
1571 void
1572 MidiRegionView::previous_program(CanvasProgramChange& program)
1573 {
1574         MIDI::Name::PatchPrimaryKey key;
1575         get_patch_key_at(program.event_time(), program.channel(), key);
1576
1577         boost::shared_ptr<MIDI::Name::Patch> patch =
1578                 MIDI::Name::MidiPatchManager::instance().previous_patch(
1579                                 _model_name,
1580                                 _custom_device_mode,
1581                                 program.channel(),
1582                                 key);
1583
1584         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1585         if (patch) {
1586                 alter_program_change(program_change_event, patch->patch_primary_key());
1587         }
1588 }
1589
1590 void
1591 MidiRegionView::next_program(CanvasProgramChange& program)
1592 {
1593         MIDI::Name::PatchPrimaryKey key;
1594         get_patch_key_at(program.event_time(), program.channel(), key);
1595
1596         boost::shared_ptr<MIDI::Name::Patch> patch =
1597                 MIDI::Name::MidiPatchManager::instance().next_patch(
1598                                 _model_name,
1599                                 _custom_device_mode,
1600                                 program.channel(),
1601                                 key);
1602
1603         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1604         if (patch) {
1605                 alter_program_change(program_change_event, patch->patch_primary_key());
1606         }
1607 }
1608
1609 void
1610 MidiRegionView::maybe_remove_deleted_note_from_selection (CanvasNoteEvent* cne)
1611 {
1612         if (_selection.empty()) {
1613                 return;
1614         }
1615
1616         if (_selection.erase (cne) > 0) {
1617                 cerr << "Erased a CNE from selection\n";
1618         }
1619 }
1620
1621 void
1622 MidiRegionView::delete_selection()
1623 {
1624         if (_selection.empty()) {
1625                 return;
1626         }
1627
1628         start_diff_command (_("delete selection"));
1629
1630         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1631                 if ((*i)->selected()) {
1632                         _diff_command->remove((*i)->note());
1633                 }
1634         }
1635
1636         _selection.clear();
1637
1638         apply_diff ();
1639 }
1640
1641 void
1642 MidiRegionView::delete_note (boost::shared_ptr<NoteType> n)
1643 {
1644         start_diff_command (_("delete note"));
1645         _diff_command->remove (n);
1646         apply_diff ();
1647
1648         trackview.editor().hide_verbose_canvas_cursor ();
1649 }
1650
1651 void
1652 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1653 {
1654         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1655                 if ((*i)->selected() && (*i) != ev) {
1656                         (*i)->set_selected(false);
1657                         (*i)->hide_velocity();
1658                 }
1659         }
1660
1661         _selection.clear();
1662 }
1663
1664 void
1665 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1666 {
1667         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
1668                 if ((*i) != ev) {
1669
1670                         Selection::iterator tmp = i;
1671                         ++tmp;
1672
1673                         (*i)->set_selected (false);
1674                         _selection.erase (i);
1675
1676                         i = tmp;
1677
1678                 } else {
1679                         ++i;
1680                 }
1681         }
1682
1683         /* don't bother with removing this regionview from the editor selection,
1684            since we're about to add another note, and thus put/keep this
1685            regionview in the editor selection.
1686         */
1687
1688         if (!ev->selected()) {
1689                 add_to_selection (ev);
1690         }
1691 }
1692
1693 void
1694 MidiRegionView::select_matching_notes (uint8_t notenum, uint16_t channel_mask, bool add, bool extend)
1695 {
1696         uint8_t low_note = 127;
1697         uint8_t high_note = 0;
1698         MidiModel::Notes& notes (_model->notes());
1699         _optimization_iterator = _events.begin();
1700
1701         if (!add) {
1702                 clear_selection ();
1703         }
1704
1705         if (extend && _selection.empty()) {
1706                 extend = false;
1707         }
1708
1709         if (extend) {
1710
1711                 /* scan existing selection to get note range */
1712
1713                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1714                         if ((*i)->note()->note() < low_note) {
1715                                 low_note = (*i)->note()->note();
1716                         }
1717                         if ((*i)->note()->note() > high_note) {
1718                                 high_note = (*i)->note()->note();
1719                         }
1720                 }
1721
1722                 low_note = min (low_note, notenum);
1723                 high_note = max (high_note, notenum);
1724         }
1725
1726         no_sound_notes = true;
1727
1728         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1729
1730                 boost::shared_ptr<NoteType> note (*n);
1731                 CanvasNoteEvent* cne;
1732                 bool select = false;
1733
1734                 if (((1 << note->channel()) & channel_mask) != 0) {
1735                         if (extend) {
1736                                 if ((note->note() >= low_note && note->note() <= high_note)) {
1737                                         select = true;
1738                                 }
1739                         } else if (note->note() == notenum) {
1740                                 select = true;
1741                         }
1742                 }
1743
1744                 if (select) {
1745                         if ((cne = find_canvas_note (note)) != 0) {
1746                                 // extend is false because we've taken care of it,
1747                                 // since it extends by time range, not pitch.
1748                                 note_selected (cne, add, false);
1749                         }
1750                 }
1751
1752                 add = true; // we need to add all remaining matching notes, even if the passed in value was false (for "set")
1753
1754         }
1755
1756         no_sound_notes = false;
1757 }
1758
1759 void
1760 MidiRegionView::toggle_matching_notes (uint8_t notenum, uint16_t channel_mask)
1761 {
1762         MidiModel::Notes& notes (_model->notes());
1763         _optimization_iterator = _events.begin();
1764
1765         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1766
1767                 boost::shared_ptr<NoteType> note (*n);
1768                 CanvasNoteEvent* cne;
1769
1770                 if (note->note() == notenum && (((0x0001 << note->channel()) & channel_mask) != 0)) {
1771                         if ((cne = find_canvas_note (note)) != 0) {
1772                                 if (cne->selected()) {
1773                                         note_deselected (cne);
1774                                 } else {
1775                                         note_selected (cne, true, false);
1776                                 }
1777                         }
1778                 }
1779         }
1780 }
1781
1782 void
1783 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add, bool extend)
1784 {
1785         if (!add) {
1786                 clear_selection_except(ev);
1787         }
1788
1789         if (!extend) {
1790
1791                 if (!ev->selected()) {
1792                         add_to_selection (ev);
1793                 }
1794
1795         } else {
1796                 /* find end of latest note selected, select all between that and the start of "ev" */
1797
1798                 Evoral::MusicalTime earliest = DBL_MAX;
1799                 Evoral::MusicalTime latest = 0;
1800
1801                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1802                         if ((*i)->note()->end_time() > latest) {
1803                                 latest = (*i)->note()->end_time();
1804                         }
1805                         if ((*i)->note()->time() < earliest) {
1806                                 earliest = (*i)->note()->time();
1807                         }
1808                 }
1809
1810                 if (ev->note()->end_time() > latest) {
1811                         latest = ev->note()->end_time();
1812                 }
1813
1814                 if (ev->note()->time() < earliest) {
1815                         earliest = ev->note()->time();
1816                 }
1817
1818                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1819
1820                         /* find notes entirely within OR spanning the earliest..latest range */
1821
1822                         if (((*i)->note()->time() >= earliest && (*i)->note()->end_time() <= latest) ||
1823                             ((*i)->note()->time() <= earliest && (*i)->note()->end_time() >= latest)) {
1824                                 add_to_selection (*i);
1825                         }
1826
1827 #if 0
1828                         /* if events were guaranteed to be time sorted, we could do this.
1829                            but as of sept 10th 2009, they no longer are.
1830                         */
1831
1832                         if ((*i)->note()->time() > latest) {
1833                                 break;
1834                         }
1835 #endif
1836                 }
1837         }
1838 }
1839
1840 void
1841 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev)
1842 {
1843         remove_from_selection (ev);
1844 }
1845
1846 void
1847 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
1848 {
1849         if (x1 > x2) {
1850                 swap (x1, x2);
1851         }
1852
1853         if (y1 > y2) {
1854                 swap (y1, y2);
1855         }
1856
1857         // TODO: Make this faster by storing the last updated selection rect, and only
1858         // adjusting things that are in the area that appears/disappeared.
1859         // We probably need a tree to be able to find events in O(log(n)) time.
1860
1861         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1862
1863                 /* check if any corner of the note is inside the rect
1864
1865                    Notes:
1866                      1) this is computing "touched by", not "contained by" the rect.
1867                      2) this does not require that events be sorted in time.
1868                  */
1869
1870                 const double ix1 = (*i)->x1();
1871                 const double ix2 = (*i)->x2();
1872                 const double iy1 = (*i)->y1();
1873                 const double iy2 = (*i)->y2();
1874
1875                 if ((ix1 >= x1 && ix1 <= x2 && iy1 >= y1 && iy1 <= y2) ||
1876                     (ix1 >= x1 && ix1 <= x2 && iy2 >= y1 && iy2 <= y2) ||
1877                     (ix2 >= x1 && ix2 <= x2 && iy1 >= y1 && iy1 <= y2) ||
1878                     (ix2 >= x1 && ix2 <= x2 && iy2 >= y1 && iy2 <= y2)) {
1879
1880                         // Inside rectangle
1881                         if (!(*i)->selected()) {
1882                                 add_to_selection (*i);
1883                         }
1884                 } else if ((*i)->selected()) {
1885                         // Not inside rectangle
1886                         remove_from_selection (*i);
1887                 }
1888         }
1889 }
1890
1891 void
1892 MidiRegionView::remove_from_selection (CanvasNoteEvent* ev)
1893 {
1894         Selection::iterator i = _selection.find (ev);
1895
1896         if (i != _selection.end()) {
1897                 _selection.erase (i);
1898         }
1899
1900         ev->set_selected (false);
1901         ev->hide_velocity ();
1902
1903         if (_selection.empty()) {
1904                 PublicEditor& editor (trackview.editor());
1905                 editor.get_selection().remove (this);
1906         }
1907 }
1908
1909 void
1910 MidiRegionView::add_to_selection (CanvasNoteEvent* ev)
1911 {
1912         bool add_mrv_selection = false;
1913
1914         if (_selection.empty()) {
1915                 add_mrv_selection = true;
1916         }
1917
1918         if (_selection.insert (ev).second) {
1919                 ev->set_selected (true);
1920                 play_midi_note ((ev)->note());
1921         }
1922
1923         if (add_mrv_selection) {
1924                 PublicEditor& editor (trackview.editor());
1925                 editor.get_selection().add (this);
1926         }
1927 }
1928
1929 void
1930 MidiRegionView::move_selection(double dx, double dy)
1931 {
1932         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1933                 (*i)->move_event(dx, dy);
1934         }
1935 }
1936
1937 void
1938 MidiRegionView::note_dropped(CanvasNoteEvent *, double dt, int8_t dnote)
1939 {
1940         assert (!_selection.empty());
1941
1942         uint8_t lowest_note_in_selection  = 127;
1943         uint8_t highest_note_in_selection = 0;
1944         uint8_t highest_note_difference = 0;
1945
1946         // find highest and lowest notes first
1947
1948         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1949                 uint8_t pitch = (*i)->note()->note();
1950                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
1951                 highest_note_in_selection = std::max(highest_note_in_selection, pitch);
1952         }
1953
1954         /*
1955         cerr << "dnote: " << (int) dnote << endl;
1956         cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
1957              << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
1958         cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
1959              << int(highest_note_in_selection) << endl;
1960         cerr << "selection size: " << _selection.size() << endl;
1961         cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
1962         */
1963
1964         // Make sure the note pitch does not exceed the MIDI standard range
1965         if (highest_note_in_selection + dnote > 127) {
1966                 highest_note_difference = highest_note_in_selection - 127;
1967         }
1968
1969         start_diff_command(_("move notes"));
1970
1971         for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ++i) {
1972
1973                 nframes64_t start_frames = beats_to_frames((*i)->note()->time());
1974
1975                 if (dt >= 0) {
1976                         start_frames += snap_frame_to_frame(trackview.editor().pixel_to_frame(dt));
1977                 } else {
1978                         start_frames -= snap_frame_to_frame(trackview.editor().pixel_to_frame(-dt));
1979                 }
1980
1981                 Evoral::MusicalTime new_time = frames_to_beats(start_frames);
1982
1983                 if (new_time < 0) {
1984                         continue;
1985                 }
1986
1987                 diff_add_change (*i, MidiModel::DiffCommand::StartTime, new_time);
1988
1989                 uint8_t original_pitch = (*i)->note()->note();
1990                 uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
1991
1992                 // keep notes in standard midi range
1993                 clamp_to_0_127(new_pitch);
1994
1995                 // keep original pitch if note is dragged outside valid midi range
1996                 if ((original_pitch != 0 && new_pitch == 0)
1997                                 || (original_pitch != 127 && new_pitch == 127)) {
1998                         new_pitch = original_pitch;
1999                 }
2000
2001                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
2002                 highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
2003
2004                 diff_add_change (*i, MidiModel::DiffCommand::NoteNumber, new_pitch);
2005         }
2006
2007         apply_diff();
2008
2009         // care about notes being moved beyond the upper/lower bounds on the canvas
2010         if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
2011             highest_note_in_selection > midi_stream_view()->highest_note()) {
2012                 midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
2013         }
2014 }
2015
2016 nframes64_t
2017 MidiRegionView::snap_pixel_to_frame(double x)
2018 {
2019         PublicEditor& editor = trackview.editor();
2020         // x is region relative, convert it to global absolute frames
2021         nframes64_t frame = editor.pixel_to_frame(x) + _region->position();
2022         editor.snap_to(frame);
2023         return frame - _region->position(); // convert back to region relative
2024 }
2025
2026 nframes64_t
2027 MidiRegionView::snap_frame_to_frame(nframes64_t x)
2028 {
2029         PublicEditor& editor = trackview.editor();
2030         // x is region relative, convert it to global absolute frames
2031         nframes64_t frame = x + _region->position();
2032         editor.snap_to(frame);
2033         return frame - _region->position(); // convert back to region relative
2034 }
2035
2036 double
2037 MidiRegionView::snap_to_pixel(double x)
2038 {
2039         return (double) trackview.editor().frame_to_pixel(snap_pixel_to_frame(x));
2040 }
2041
2042 double
2043 MidiRegionView::get_position_pixels()
2044 {
2045         nframes64_t region_frame = get_position();
2046         return trackview.editor().frame_to_pixel(region_frame);
2047 }
2048
2049 double
2050 MidiRegionView::get_end_position_pixels()
2051 {
2052         nframes64_t frame = get_position() + get_duration ();
2053         return trackview.editor().frame_to_pixel(frame);
2054 }
2055
2056 nframes64_t
2057 MidiRegionView::beats_to_frames(double beats) const
2058 {
2059         return _time_converter.to(beats);
2060 }
2061
2062 double
2063 MidiRegionView::frames_to_beats(nframes64_t frames) const
2064 {
2065         return _time_converter.from(frames);
2066 }
2067
2068 void
2069 MidiRegionView::begin_resizing (bool /*at_front*/)
2070 {
2071         _resize_data.clear();
2072
2073         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2074                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
2075
2076                 // only insert CanvasNotes into the map
2077                 if (note) {
2078                         NoteResizeData *resize_data = new NoteResizeData();
2079                         resize_data->canvas_note = note;
2080
2081                         // create a new SimpleRect from the note which will be the resize preview
2082                         SimpleRect *resize_rect = new SimpleRect(
2083                                         *group, note->x1(), note->y1(), note->x2(), note->y2());
2084
2085                         // calculate the colors: get the color settings
2086                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
2087                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
2088                                         128);
2089
2090                         // make the resize preview notes more transparent and bright
2091                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
2092
2093                         // calculate color based on note velocity
2094                         resize_rect->property_fill_color_rgba() = UINT_INTERPOLATE(
2095                                 CanvasNoteEvent::meter_style_fill_color(note->note()->velocity(), note->selected()),
2096                                         fill_color,
2097                                         0.85);
2098
2099                         resize_rect->property_outline_color_rgba() = CanvasNoteEvent::calculate_outline(
2100                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
2101
2102                         resize_data->resize_rect = resize_rect;
2103                         _resize_data.push_back(resize_data);
2104                 }
2105         }
2106 }
2107
2108 /** Update resizing notes while user drags.
2109  * @param primary `primary' note for the drag; ie the one that is used as the reference in non-relative mode.
2110  * @param at_front which end of the note (true == note on, false == note off)
2111  * @param delta_x change in mouse position since the start of the drag
2112  * @param relative true if relative resizing is taking place, false if absolute resizing.  This only makes
2113  * a difference when multiple notes are being resized; in relative mode, each note's length is changed by the
2114  * amount of the drag.  In non-relative mode, all selected notes are set to have the same start or end point
2115  * as the \a primary note.
2116  */
2117 void
2118 MidiRegionView::update_resizing (ArdourCanvas::CanvasNote* primary, bool at_front, double delta_x, bool relative)
2119 {
2120         bool cursor_set = false;
2121
2122         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2123                 SimpleRect* resize_rect = (*i)->resize_rect;
2124                 CanvasNote* canvas_note = (*i)->canvas_note;
2125                 double current_x;
2126
2127                 if (at_front) {
2128                         if (relative) {
2129                                 current_x = canvas_note->x1() + delta_x;
2130                         } else {
2131                                 current_x = primary->x1() + delta_x;
2132                         }
2133                 } else {
2134                         if (relative) {
2135                                 current_x = canvas_note->x2() + delta_x;
2136                         } else {
2137                                 current_x = primary->x2() + delta_x;
2138                         }
2139                 }
2140
2141                 if (at_front) {
2142                         resize_rect->property_x1() = snap_to_pixel(current_x);
2143                         resize_rect->property_x2() = canvas_note->x2();
2144                 } else {
2145                         resize_rect->property_x2() = snap_to_pixel(current_x);
2146                         resize_rect->property_x1() = canvas_note->x1();
2147                 }
2148
2149                 if (!cursor_set) {
2150                         double beats;
2151
2152                         beats = snap_pixel_to_frame (current_x);
2153                         beats = frames_to_beats (beats);
2154
2155                         double len;
2156
2157                         if (at_front) {
2158                                 if (beats < canvas_note->note()->end_time()) {
2159                                         len = canvas_note->note()->time() - beats;
2160                                         len += canvas_note->note()->length();
2161                                 } else {
2162                                         len = 0;
2163                                 }
2164                         } else {
2165                                 if (beats >= canvas_note->note()->end_time()) {
2166                                         len = beats - canvas_note->note()->time();
2167                                 } else {
2168                                         len = 0;
2169                                 }
2170                         }
2171
2172                         char buf[16];
2173                         snprintf (buf, sizeof (buf), "%.3g beats", len);
2174                         trackview.editor().show_verbose_canvas_cursor_with (buf);
2175
2176                         cursor_set = true;
2177                 }
2178
2179         }
2180 }
2181
2182
2183 /** Finish resizing notes when the user releases the mouse button.
2184  *  Parameters the same as for \a update_resizing().
2185  */
2186 void
2187 MidiRegionView::commit_resizing (ArdourCanvas::CanvasNote* primary, bool at_front, double delta_x, bool relative)
2188 {
2189         start_diff_command(_("resize notes"));
2190
2191         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2192                 CanvasNote*  canvas_note = (*i)->canvas_note;
2193                 SimpleRect*  resize_rect = (*i)->resize_rect;
2194                 double current_x;
2195
2196                 if (at_front) {
2197                         if (relative) {
2198                                 current_x = canvas_note->x1() + delta_x;
2199                         } else {
2200                                 current_x = primary->x1() + delta_x;
2201                         }
2202                 } else {
2203                         if (relative) {
2204                                 current_x = canvas_note->x2() + delta_x;
2205                         } else {
2206                                 current_x = primary->x2() + delta_x;
2207                         }
2208                 }
2209
2210                 current_x = snap_pixel_to_frame (current_x);
2211                 current_x = frames_to_beats (current_x);
2212
2213                 if (at_front && current_x < canvas_note->note()->end_time()) {
2214                         diff_add_change (canvas_note, MidiModel::DiffCommand::StartTime, current_x);
2215
2216                         double len = canvas_note->note()->time() - current_x;
2217                         len += canvas_note->note()->length();
2218
2219                         if (len > 0) {
2220                                 /* XXX convert to beats */
2221                                 diff_add_change (canvas_note, MidiModel::DiffCommand::Length, len);
2222                         }
2223                 }
2224
2225                 if (!at_front) {
2226                         double len = current_x - canvas_note->note()->time();
2227
2228                         if (len > 0) {
2229                                 /* XXX convert to beats */
2230                                 diff_add_change (canvas_note, MidiModel::DiffCommand::Length, len);
2231                         }
2232                 }
2233
2234                 delete resize_rect;
2235                 delete (*i);
2236         }
2237
2238         _resize_data.clear();
2239         apply_diff();
2240 }
2241
2242 void
2243 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
2244 {
2245         uint8_t new_velocity;
2246
2247         if (relative) {
2248                 new_velocity = event->note()->velocity() + velocity;
2249                 clamp_to_0_127(new_velocity);
2250         } else {
2251                 new_velocity = velocity;
2252         }
2253
2254         event->set_selected (event->selected()); // change color
2255
2256         diff_add_change (event, MidiModel::DiffCommand::Velocity, new_velocity);
2257 }
2258
2259 void
2260 MidiRegionView::change_note_note (CanvasNoteEvent* event, int8_t note, bool relative)
2261 {
2262         uint8_t new_note;
2263
2264         if (relative) {
2265                 new_note = event->note()->note() + note;
2266         } else {
2267                 new_note = note;
2268         }
2269
2270         clamp_to_0_127 (new_note);
2271         diff_add_change (event, MidiModel::DiffCommand::NoteNumber, new_note);
2272 }
2273
2274 void
2275 MidiRegionView::trim_note (CanvasNoteEvent* event, Evoral::MusicalTime front_delta, Evoral::MusicalTime end_delta)
2276 {
2277         bool change_start = false;
2278         bool change_length = false;
2279         Evoral::MusicalTime new_start = 0;
2280         Evoral::MusicalTime new_length = 0;
2281
2282         /* NOTE: the semantics of the two delta arguments are slightly subtle:
2283
2284            front_delta: if positive - move the start of the note later in time (shortening it)
2285                         if negative - move the start of the note earlier in time (lengthening it)
2286
2287            end_delta:   if positive - move the end of the note later in time (lengthening it)
2288                         if negative - move the end of the note earlier in time (shortening it)
2289          */
2290
2291         if (front_delta) {
2292                 if (front_delta < 0) {
2293
2294                         if (event->note()->time() < -front_delta) {
2295                                 new_start = 0;
2296                         } else {
2297                                 new_start = event->note()->time() + front_delta; // moves earlier
2298                         }
2299
2300                         /* start moved toward zero, so move the end point out to where it used to be.
2301                            Note that front_delta is negative, so this increases the length.
2302                         */
2303
2304                         new_length = event->note()->length() - front_delta;
2305                         change_start = true;
2306                         change_length = true;
2307
2308                 } else {
2309
2310                         Evoral::MusicalTime new_pos = event->note()->time() + front_delta;
2311
2312                         if (new_pos < event->note()->end_time()) {
2313                                 new_start = event->note()->time() + front_delta;
2314                                 /* start moved toward the end, so move the end point back to where it used to be */
2315                                 new_length = event->note()->length() - front_delta;
2316                                 change_start = true;
2317                                 change_length = true;
2318                         }
2319                 }
2320
2321         }
2322
2323         if (end_delta) {
2324                 bool can_change = true;
2325                 if (end_delta < 0) {
2326                         if (event->note()->length() < -end_delta) {
2327                                 can_change = false;
2328                         }
2329                 }
2330
2331                 if (can_change) {
2332                         new_length = event->note()->length() + end_delta;
2333                         change_length = true;
2334                 }
2335         }
2336
2337         if (change_start) {
2338                 diff_add_change (event, MidiModel::DiffCommand::StartTime, new_start);
2339         }
2340
2341         if (change_length) {
2342                 diff_add_change (event, MidiModel::DiffCommand::Length, new_length);
2343         }
2344 }
2345
2346 void
2347 MidiRegionView::change_note_time (CanvasNoteEvent* event, Evoral::MusicalTime delta, bool relative)
2348 {
2349         Evoral::MusicalTime new_time;
2350
2351         if (relative) {
2352                 if (delta < 0.0) {
2353                         if (event->note()->time() < -delta) {
2354                                 new_time = 0;
2355                         } else {
2356                                 new_time = event->note()->time() + delta;
2357                         }
2358                 } else {
2359                         new_time = event->note()->time() + delta;
2360                 }
2361         } else {
2362                 new_time = delta;
2363         }
2364
2365         diff_add_change (event, MidiModel::DiffCommand::StartTime, new_time);
2366 }
2367
2368 void
2369 MidiRegionView::change_velocities (bool up, bool fine, bool allow_smush)
2370 {
2371         int8_t delta;
2372
2373         if (_selection.empty()) {
2374                 return;
2375         }
2376
2377         if (fine) {
2378                 delta = 1;
2379         } else {
2380                 delta = 10;
2381         }
2382
2383         if (!up) {
2384                 delta = -delta;
2385         }
2386
2387         if (!allow_smush) {
2388                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2389                         if ((*i)->note()->velocity() + delta == 0 || (*i)->note()->velocity() + delta == 127) {
2390                                 return;
2391                         }
2392                 }
2393         }
2394
2395         start_diff_command(_("change velocities"));
2396
2397         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
2398                 Selection::iterator next = i;
2399                 ++next;
2400                 change_note_velocity (*i, delta, true);
2401                 i = next;
2402         }
2403
2404         apply_diff();
2405
2406         if (!_selection.empty()) {
2407                 char buf[24];
2408                 snprintf (buf, sizeof (buf), "Vel %d",
2409                           (int) (*_selection.begin())->note()->velocity());
2410                 trackview.editor().show_verbose_canvas_cursor_with (buf);
2411         }
2412 }
2413
2414
2415 void
2416 MidiRegionView::transpose (bool up, bool fine, bool allow_smush)
2417 {
2418         if (_selection.empty()) {
2419                 return;
2420         }
2421
2422         int8_t delta;
2423
2424         if (fine) {
2425                 delta = 1;
2426         } else {
2427                 delta = 12;
2428         }
2429
2430         if (!up) {
2431                 delta = -delta;
2432         }
2433
2434         if (!allow_smush) {
2435                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2436                         if (!up) {
2437                                 if ((int8_t) (*i)->note()->note() + delta <= 0) {
2438                                         return;
2439                                 }
2440                         } else {
2441                                 if ((int8_t) (*i)->note()->note() + delta > 127) {
2442                                         return;
2443                                 }
2444                         }
2445                 }
2446         }
2447
2448         start_diff_command (_("transpose"));
2449
2450         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2451                 Selection::iterator next = i;
2452                 ++next;
2453                 change_note_note (*i, delta, true);
2454                 i = next;
2455         }
2456
2457         apply_diff ();
2458 }
2459
2460 void
2461 MidiRegionView::change_note_lengths (bool fine, bool shorter, bool start, bool end)
2462 {
2463         Evoral::MusicalTime delta;
2464
2465         if (fine) {
2466                 delta = 1.0/128.0;
2467         } else {
2468                 /* grab the current grid distance */
2469                 bool success;
2470                 delta = trackview.editor().get_grid_type_as_beats (success, _region->position());
2471                 if (!success) {
2472                         /* XXX cannot get grid type as beats ... should always be possible ... FIX ME */
2473                         cerr << "Grid type not available as beats - TO BE FIXED\n";
2474                         return;
2475                 }
2476         }
2477
2478         if (shorter) {
2479                 delta = -delta;
2480         }
2481
2482         start_diff_command (_("change note lengths"));
2483
2484         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2485                 Selection::iterator next = i;
2486                 ++next;
2487
2488                 /* note the negation of the delta for start */
2489
2490                 trim_note (*i, (start ? -delta : 0), (end ? delta : 0));
2491                 i = next;
2492         }
2493
2494         apply_diff ();
2495
2496 }
2497
2498 void
2499 MidiRegionView::nudge_notes (bool forward)
2500 {
2501         if (_selection.empty()) {
2502                 return;
2503         }
2504
2505         /* pick a note as the point along the timeline to get the nudge distance.
2506            its not necessarily the earliest note, so we may want to pull the notes out
2507            into a vector and sort before using the first one.
2508         */
2509
2510         nframes64_t ref_point = _region->position() + beats_to_frames ((*(_selection.begin()))->note()->time());
2511         nframes64_t unused;
2512         nframes64_t distance;
2513
2514         if (trackview.editor().snap_mode() == Editing::SnapOff) {
2515
2516                 /* grid is off - use nudge distance */
2517
2518                 distance = trackview.editor().get_nudge_distance (ref_point, unused);
2519
2520         } else {
2521
2522                 /* use grid */
2523
2524                 nframes64_t next_pos = ref_point;
2525
2526                 if (forward) {
2527                         /* XXX need check on max_frames, but that needs max_frames64 or something */
2528                         next_pos += 1;
2529                 } else {
2530                         if (next_pos == 0) {
2531                                 return;
2532                         }
2533                         next_pos -= 1;
2534                 }
2535
2536                 trackview.editor().snap_to (next_pos, (forward ? 1 : -1), false);
2537                 distance = ref_point - next_pos;
2538         }
2539
2540         if (distance == 0) {
2541                 return;
2542         }
2543
2544         Evoral::MusicalTime delta = frames_to_beats (fabs (distance));
2545
2546         if (!forward) {
2547                 delta = -delta;
2548         }
2549
2550         start_diff_command (_("nudge"));
2551
2552         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2553                 Selection::iterator next = i;
2554                 ++next;
2555                 change_note_time (*i, delta, true);
2556                 i = next;
2557         }
2558
2559         apply_diff ();
2560 }
2561
2562 void
2563 MidiRegionView::change_channel(uint8_t channel)
2564 {
2565         start_diff_command(_("change channel"));
2566         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2567                 diff_add_change (*i, MidiModel::DiffCommand::Channel, channel);
2568         }
2569
2570         apply_diff();
2571 }
2572
2573
2574 void
2575 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
2576 {
2577         if (_mouse_state == SelectTouchDragging) {
2578                 note_selected (ev, true);
2579         }
2580
2581         show_verbose_canvas_cursor (ev->note ());
2582 }
2583
2584 void
2585 MidiRegionView::note_left (ArdourCanvas::CanvasNoteEvent* note)
2586 {
2587         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2588                 (*i)->hide_velocity ();
2589         }
2590
2591         trackview.editor().hide_verbose_canvas_cursor ();
2592 }
2593
2594 void
2595 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
2596 {
2597         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
2598         if (msrc)
2599                 display_model(msrc->model());
2600 }
2601
2602 void
2603 MidiRegionView::set_frame_color()
2604 {
2605         if (frame) {
2606                 if (_selected && should_show_selection) {
2607                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
2608                 } else {
2609                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
2610                 }
2611         }
2612 }
2613
2614 void
2615 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
2616 {
2617         switch (mode) {
2618         case AllChannels:
2619         case FilterChannels:
2620                 _force_channel = -1;
2621                 break;
2622         case ForceChannel:
2623                 _force_channel = mask;
2624                 mask = 0xFFFF; // Show all notes as active (below)
2625         };
2626
2627         // Update notes for selection
2628         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2629                 (*i)->on_channel_selection_change(mask);
2630         }
2631
2632         _last_channel_selection = mask;
2633 }
2634
2635 void
2636 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
2637 {
2638         _model_name         = model;
2639         _custom_device_mode = custom_device_mode;
2640         redisplay_model();
2641 }
2642
2643 void
2644 MidiRegionView::cut_copy_clear (Editing::CutCopyOp op)
2645 {
2646         if (_selection.empty()) {
2647                 return;
2648         }
2649
2650         PublicEditor& editor (trackview.editor());
2651
2652         switch (op) {
2653         case Cut:
2654         case Copy:
2655                 editor.get_cut_buffer().add (selection_as_cut_buffer());
2656                 break;
2657         default:
2658                 break;
2659         }
2660
2661         if (op != Copy) {
2662
2663                 start_diff_command();
2664
2665                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2666                         switch (op) {
2667                         case Copy:
2668                                 break;
2669                         case Cut:
2670                         case Clear:
2671                                 diff_remove_note (*i);
2672                                 break;
2673                         }
2674                 }
2675
2676                 apply_diff();
2677         }
2678 }
2679
2680 MidiCutBuffer*
2681 MidiRegionView::selection_as_cut_buffer () const
2682 {
2683         Notes notes;
2684
2685         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2686                 NoteType* n = (*i)->note().get();
2687                 notes.insert (boost::shared_ptr<NoteType> (new NoteType (*n)));
2688         }
2689
2690         MidiCutBuffer* cb = new MidiCutBuffer (trackview.session());
2691         cb->set (notes);
2692
2693         return cb;
2694 }
2695
2696 void
2697 MidiRegionView::paste (nframes64_t pos, float times, const MidiCutBuffer& mcb)
2698 {
2699         if (mcb.empty()) {
2700                 return;
2701         }
2702
2703         start_diff_command (_("paste"));
2704
2705         Evoral::MusicalTime beat_delta;
2706         Evoral::MusicalTime paste_pos_beats;
2707         Evoral::MusicalTime duration;
2708         Evoral::MusicalTime end_point = 0;
2709
2710         duration = (*mcb.notes().rbegin())->end_time() - (*mcb.notes().begin())->time();
2711         paste_pos_beats = frames_to_beats (pos - _region->position());
2712         beat_delta = (*mcb.notes().begin())->time() - paste_pos_beats;
2713         paste_pos_beats = 0;
2714
2715         _selection.clear ();
2716
2717         for (int n = 0; n < (int) times; ++n) {
2718
2719                 for (Notes::const_iterator i = mcb.notes().begin(); i != mcb.notes().end(); ++i) {
2720
2721                         boost::shared_ptr<NoteType> copied_note (new NoteType (*((*i).get())));
2722                         copied_note->set_time (paste_pos_beats + copied_note->time() - beat_delta);
2723
2724                         /* make all newly added notes selected */
2725
2726                         diff_add_note (copied_note, true);
2727                         end_point = copied_note->end_time();
2728                 }
2729
2730                 paste_pos_beats += duration;
2731         }
2732
2733         /* if we pasted past the current end of the region, extend the region */
2734
2735         nframes64_t end_frame = _region->position() + beats_to_frames (end_point);
2736         nframes64_t region_end = _region->position() + _region->length() - 1;
2737
2738         if (end_frame > region_end) {
2739
2740                 trackview.session()->begin_reversible_command (_("paste"));
2741
2742                 _region->clear_history ();
2743                 _region->set_length (end_frame, this);
2744                 trackview.session()->add_command (new StatefulDiffCommand (_region));
2745         }
2746
2747         apply_diff ();
2748 }
2749
2750 struct EventNoteTimeEarlyFirstComparator {
2751     bool operator() (CanvasNoteEvent* a, CanvasNoteEvent* b) {
2752             return a->note()->time() < b->note()->time();
2753     }
2754 };
2755
2756 void
2757 MidiRegionView::time_sort_events ()
2758 {
2759         if (!_sort_needed) {
2760                 return;
2761         }
2762
2763         EventNoteTimeEarlyFirstComparator cmp;
2764         _events.sort (cmp);
2765
2766         _sort_needed = false;
2767 }
2768
2769 void
2770 MidiRegionView::goto_next_note ()
2771 {
2772         // nframes64_t pos = -1;
2773         bool use_next = false;
2774
2775         if (_events.back()->selected()) {
2776                 return;
2777         }
2778
2779         time_sort_events ();
2780
2781         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2782                 if ((*i)->selected()) {
2783                         use_next = true;
2784                         continue;
2785                 } else if (use_next) {
2786                         unique_select (*i);
2787                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
2788                         return;
2789                 }
2790         }
2791
2792         /* use the first one */
2793
2794         unique_select (_events.front());
2795
2796 }
2797
2798 void
2799 MidiRegionView::goto_previous_note ()
2800 {
2801         // nframes64_t pos = -1;
2802         bool use_next = false;
2803
2804         if (_events.front()->selected()) {
2805                 return;
2806         }
2807
2808         time_sort_events ();
2809
2810         for (Events::reverse_iterator i = _events.rbegin(); i != _events.rend(); ++i) {
2811                 if ((*i)->selected()) {
2812                         use_next = true;
2813                         continue;
2814                 } else if (use_next) {
2815                         unique_select (*i);
2816                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
2817                         return;
2818                 }
2819         }
2820
2821         /* use the last one */
2822
2823         unique_select (*(_events.rbegin()));
2824 }
2825
2826 void
2827 MidiRegionView::selection_as_notelist (Notes& selected, bool allow_all_if_none_selected)
2828 {
2829         bool had_selected = false;
2830
2831         time_sort_events ();
2832
2833         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2834                 if ((*i)->selected()) {
2835                         selected.insert ((*i)->note());
2836                         had_selected = true;
2837                 }
2838         }
2839
2840         if (allow_all_if_none_selected && !had_selected) {
2841                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2842                         selected.insert ((*i)->note());
2843                 }
2844         }
2845 }
2846
2847 void
2848 MidiRegionView::update_ghost_note (double x, double y)
2849 {
2850         _last_ghost_x = x;
2851         _last_ghost_y = y;
2852
2853         group->w2i (x, y);
2854         nframes64_t f = trackview.editor().pixel_to_frame (x) + _region->position ();
2855         trackview.editor().snap_to (f);
2856         f -= _region->position ();
2857
2858         bool success;
2859         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, f);
2860         if (!success) {
2861                 beats = 1;
2862         }
2863
2864         double length = frames_to_beats (snap_frame_to_frame (f + beats_to_frames (beats)) - f);
2865
2866         _ghost_note->note()->set_time (frames_to_beats (f + _region->start()));
2867         _ghost_note->note()->set_length (length);
2868         _ghost_note->note()->set_note (midi_stream_view()->y_to_note (y));
2869
2870         update_note (_ghost_note);
2871
2872         show_verbose_canvas_cursor (_ghost_note->note ());
2873 }
2874
2875 void
2876 MidiRegionView::create_ghost_note (double x, double y)
2877 {
2878         delete _ghost_note;
2879         _ghost_note = 0;
2880
2881         boost::shared_ptr<NoteType> g (new NoteType);
2882         _ghost_note = new NoEventCanvasNote (*this, *group, g);
2883         update_ghost_note (x, y);
2884         _ghost_note->show ();
2885
2886         _last_ghost_x = x;
2887         _last_ghost_y = y;
2888
2889         show_verbose_canvas_cursor (_ghost_note->note ());
2890 }
2891
2892 void
2893 MidiRegionView::snap_changed ()
2894 {
2895         if (!_ghost_note) {
2896                 return;
2897         }
2898
2899         create_ghost_note (_last_ghost_x, _last_ghost_y);
2900 }
2901
2902 void
2903 MidiRegionView::show_verbose_canvas_cursor (boost::shared_ptr<NoteType> n) const
2904 {
2905         char buf[24];
2906         snprintf (buf, sizeof (buf), "%s (%d)\nVel %d",
2907                   Evoral::midi_note_name (n->note()).c_str(),
2908                   (int) n->note (),
2909                   (int) n->velocity());
2910         trackview.editor().show_verbose_canvas_cursor_with (buf);
2911 }
2912
2913 void
2914 MidiRegionView::drop_down_keys ()
2915 {
2916         _mouse_state = None;
2917 }
2918
2919 void
2920 MidiRegionView::maybe_select_by_position (GdkEventButton* ev, double x, double y)
2921 {
2922         double note = midi_stream_view()->y_to_note(y);
2923         Events e;
2924         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
2925
2926         cerr << "Selecting by position\n";
2927
2928         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
2929
2930         if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
2931                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchGreaterThanOrEqual, (uint8_t) floor (note), chn_mask);
2932         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
2933                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchLessThanOrEqual, (uint8_t) floor (note), chn_mask);
2934         } else {
2935                 return;
2936         }
2937
2938         bool add_mrv_selection = false;
2939
2940         if (_selection.empty()) {
2941                 add_mrv_selection = true;
2942         }
2943
2944         for (Events::iterator i = e.begin(); i != e.end(); ++i) {
2945                 if (_selection.insert (*i).second) {
2946                         (*i)->set_selected (true);
2947                 }
2948         }
2949
2950         if (add_mrv_selection) {
2951                 PublicEditor& editor (trackview.editor());
2952                 editor.get_selection().add (this);
2953         }
2954 }
2955
2956 void
2957 MidiRegionView::color_handler ()
2958 {
2959         RegionView::color_handler ();
2960
2961         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2962                 (*i)->set_selected ((*i)->selected()); // will change color
2963         }
2964
2965         /* XXX probably more to do here */
2966 }
2967
2968 void
2969 MidiRegionView::enable_display (bool yn)
2970 {
2971         RegionView::enable_display (yn);
2972         if (yn) {
2973                 redisplay_model ();
2974         }
2975 }