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         display_sysexes();
 973         display_program_changes();
 974
 975         _marked_for_selection.clear ();
 976         _marked_for_velocity.clear ();
 977
 978         /* we may have caused _events to contain things out of order (e.g. if a note
 979            moved earlier or later). we don't generally need them in time order, but
 980            make a note that a sort is required for those cases that require it.
 981         */
 982
 983         _sort_needed = true;
 984 }
 985
 986 void
 987 MidiRegionView::display_program_changes()
 988 {
 989         boost::shared_ptr<Evoral::Control> control = _model->control(MidiPgmChangeAutomation);
 990         if (!control) {
 991                 return;
 992         }
 993
 994         Glib::Mutex::Lock lock (control->list()->lock());
 995
 996         uint8_t channel = control->parameter().channel();
 997
 998         for (AutomationList::const_iterator event = control->list()->begin();
 999                         event != control->list()->end(); ++event) {
1000                 double event_time     = (*event)->when;
1001                 double program_number = floor((*event)->value + 0.5);
1002
1003                 // Get current value of bank select MSB at time of the program change
1004                 Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1005                 boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1006                 uint8_t msb = 0;
1007                 if (msb_control != 0) {
1008                         msb = uint8_t(floor(msb_control->get_float(true, event_time) + 0.5));
1009                 }
1010
1011                 // Get current value of bank select LSB at time of the program change
1012                 Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1013                 boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1014                 uint8_t lsb = 0;
1015                 if (lsb_control != 0) {
1016                         lsb = uint8_t(floor(lsb_control->get_float(true, event_time) + 0.5));
1017                 }
1018
1019                 MIDI::Name::PatchPrimaryKey patch_key(msb, lsb, program_number);
1020
1021                 boost::shared_ptr<MIDI::Name::Patch> patch =
1022                         MIDI::Name::MidiPatchManager::instance().find_patch(
1023                                         _model_name, _custom_device_mode, channel, patch_key);
1024
1025                 PCEvent program_change(event_time, uint8_t(program_number), channel);
1026
1027                 if (patch != 0) {
1028                         add_pgm_change(program_change, patch->name());
1029                 } else {
1030                         char buf[4];
1031                         snprintf(buf, 4, "%d", int(program_number));
1032                         add_pgm_change(program_change, buf);
1033                 }
1034         }
1035 }
1036
1037 void
1038 MidiRegionView::display_sysexes()
1039 {
1040         for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
1041                 Evoral::MusicalTime time = (*i)->time();
1042                 assert(time >= 0);
1043
1044                 ostringstream str;
1045                 str << hex;
1046                 for (uint32_t b = 0; b < (*i)->size(); ++b) {
1047                         str << int((*i)->buffer()[b]);
1048                         if (b != (*i)->size() -1) {
1049                                 str << " ";
1050                         }
1051                 }
1052                 string text = str.str();
1053
1054                 ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1055
1056                 const double x = trackview.editor().frame_to_pixel(beats_to_frames(time));
1057
1058                 double height = midi_stream_view()->contents_height();
1059
1060                 boost::shared_ptr<CanvasSysEx> sysex = boost::shared_ptr<CanvasSysEx>(
1061                                 new CanvasSysEx(*this, *group, text, height, x, 1.0));
1062
1063                 // Show unless program change is beyond the region bounds
1064                 if (time - _region->start() >= _region->length() || time < _region->start()) {
1065                         sysex->hide();
1066                 } else {
1067                         sysex->show();
1068                 }
1069
1070                 _sys_exes.push_back(sysex);
1071         }
1072 }
1073
1074
1075 MidiRegionView::~MidiRegionView ()
1076 {
1077         in_destructor = true;
1078
1079         trackview.editor().hide_verbose_canvas_cursor ();
1080
1081         note_delete_connection.disconnect ();
1082
1083         delete _list_editor;
1084
1085         RegionViewGoingAway (this); /* EMIT_SIGNAL */
1086
1087         if (_active_notes) {
1088                 end_write();
1089         }
1090
1091         _selection.clear();
1092         clear_events();
1093         delete _note_group;
1094         delete _diff_command;
1095 }
1096
1097 void
1098 MidiRegionView::region_resized (const PropertyChange& what_changed)
1099 {
1100         RegionView::region_resized(what_changed);
1101
1102         if (what_changed.contains (ARDOUR::Properties::position)) {
1103                 set_duration(_region->length(), 0);
1104                 if (_enable_display) {
1105                         redisplay_model();
1106                 }
1107         }
1108 }
1109
1110 void
1111 MidiRegionView::reset_width_dependent_items (double pixel_width)
1112 {
1113         RegionView::reset_width_dependent_items(pixel_width);
1114         assert(_pixel_width == pixel_width);
1115
1116         if (_enable_display) {
1117                 redisplay_model();
1118         }
1119 }
1120
1121 void
1122 MidiRegionView::set_height (double height)
1123 {
1124         static const double FUDGE = 2.0;
1125         const double old_height = _height;
1126         RegionView::set_height(height);
1127         _height = height - FUDGE;
1128
1129         apply_note_range(midi_stream_view()->lowest_note(),
1130                          midi_stream_view()->highest_note(),
1131                          height != old_height + FUDGE);
1132
1133         if (name_pixbuf) {
1134                 name_pixbuf->raise_to_top();
1135         }
1136 }
1137
1138
1139 /** Apply the current note range from the stream view
1140  * by repositioning/hiding notes as necessary
1141  */
1142 void
1143 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
1144 {
1145         if (!_enable_display) {
1146                 return;
1147         }
1148
1149         if (!force && _current_range_min == min && _current_range_max == max) {
1150                 return;
1151         }
1152
1153         _current_range_min = min;
1154         _current_range_max = max;
1155
1156         for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
1157                 CanvasNoteEvent* event = *i;
1158                 boost::shared_ptr<NoteType> note (event->note());
1159
1160                 if (note->note() < _current_range_min ||
1161                     note->note() > _current_range_max) {
1162                         event->hide();
1163                 } else {
1164                         event->show();
1165                 }
1166
1167                 if (CanvasNote* cnote = dynamic_cast<CanvasNote*>(event)) {
1168
1169                         const double y1 = midi_stream_view()->note_to_y(note->note());
1170                         const double y2 = y1 + floor(midi_stream_view()->note_height());
1171
1172                         cnote->property_y1() = y1;
1173                         cnote->property_y2() = y2;
1174
1175                 } else if (CanvasHit* chit = dynamic_cast<CanvasHit*>(event)) {
1176
1177                         double x = trackview.editor().frame_to_pixel(
1178                                 beats_to_frames(note->time()) - _region->start());
1179                         const double diamond_size = midi_stream_view()->note_height() / 2.0;
1180                         double y = midi_stream_view()->note_to_y(event->note()->note())
1181                                 + ((diamond_size-2.0) / 4.0);
1182
1183                         chit->set_height (diamond_size);
1184                         chit->move (x - chit->x1(), y - chit->y1());
1185                         chit->show ();
1186                 }
1187         }
1188 }
1189
1190 GhostRegion*
1191 MidiRegionView::add_ghost (TimeAxisView& tv)
1192 {
1193         CanvasNote* note;
1194
1195         double unit_position = _region->position () / samples_per_unit;
1196         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
1197         MidiGhostRegion* ghost;
1198
1199         if (mtv && mtv->midi_view()) {
1200                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group
1201                    to allow having midi notes on top of note lines and waveforms.
1202                  */
1203                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
1204         } else {
1205                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
1206         }
1207
1208         ghost->set_height ();
1209         ghost->set_duration (_region->length() / samples_per_unit);
1210         ghosts.push_back (ghost);
1211
1212         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1213                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
1214                         ghost->add_note(note);
1215                 }
1216         }
1217
1218         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&RegionView::remove_ghost, this, _1), gui_context());
1219
1220         return ghost;
1221 }
1222
1223
1224 /** Begin tracking note state for successive calls to add_event
1225  */
1226 void
1227 MidiRegionView::begin_write()
1228 {
1229         assert(!_active_notes);
1230         _active_notes = new CanvasNote*[128];
1231         for (unsigned i=0; i < 128; ++i) {
1232                 _active_notes[i] = 0;
1233         }
1234 }
1235
1236
1237 /** Destroy note state for add_event
1238  */
1239 void
1240 MidiRegionView::end_write()
1241 {
1242         delete[] _active_notes;
1243         _active_notes = 0;
1244         _marked_for_selection.clear();
1245         _marked_for_velocity.clear();
1246 }
1247
1248
1249 /** Resolve an active MIDI note (while recording).
1250  */
1251 void
1252 MidiRegionView::resolve_note(uint8_t note, double end_time)
1253 {
1254         if (midi_view()->note_mode() != Sustained) {
1255                 return;
1256         }
1257
1258         if (_active_notes && _active_notes[note]) {
1259                 const nframes64_t end_time_frames = beats_to_frames(end_time);
1260                 _active_notes[note]->property_x2() = trackview.editor().frame_to_pixel(end_time_frames);
1261                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
1262                 _active_notes[note] = 0;
1263         }
1264 }
1265
1266
1267 /** Extend active notes to rightmost edge of region (if length is changed)
1268  */
1269 void
1270 MidiRegionView::extend_active_notes()
1271 {
1272         if (!_active_notes) {
1273                 return;
1274         }
1275
1276         for (unsigned i=0; i < 128; ++i) {
1277                 if (_active_notes[i]) {
1278                         _active_notes[i]->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1279                 }
1280         }
1281 }
1282
1283 void
1284 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
1285 {
1286         if (no_sound_notes || !trackview.editor().sound_notes()) {
1287                 return;
1288         }
1289
1290         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1291         assert(route_ui);
1292
1293         route_ui->midi_track()->write_immediate_event(
1294                         note->on_event().size(), note->on_event().buffer());
1295
1296         const double note_length_beats = (note->off_event().time() - note->on_event().time());
1297         nframes_t note_length_ms = beats_to_frames(note_length_beats)
1298                         * (1000 / (double)route_ui->session()->nominal_frame_rate());
1299         Glib::signal_timeout().connect(sigc::bind(sigc::mem_fun(this, &MidiRegionView::play_midi_note_off), note),
1300                         note_length_ms, G_PRIORITY_DEFAULT);
1301 }
1302
1303 bool
1304 MidiRegionView::play_midi_note_off(boost::shared_ptr<NoteType> note)
1305 {
1306         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1307         assert(route_ui);
1308
1309         route_ui->midi_track()->write_immediate_event(
1310                         note->off_event().size(), note->off_event().buffer());
1311
1312         return false;
1313 }
1314
1315 bool
1316 MidiRegionView::note_in_region_range(const boost::shared_ptr<NoteType> note, bool& visible) const
1317 {
1318         const nframes64_t note_start_frames = beats_to_frames(note->time());
1319
1320         bool outside = (note_start_frames - _region->start() >= _region->length()) ||
1321                 (note_start_frames < _region->start());
1322
1323         visible = (note->note() >= midi_stream_view()->lowest_note()) &&
1324                 (note->note() <= midi_stream_view()->highest_note());
1325
1326         return !outside;
1327 }
1328
1329 void
1330 MidiRegionView::update_note (CanvasNote* ev)
1331 {
1332         boost::shared_ptr<NoteType> note = ev->note();
1333
1334         const nframes64_t note_start_frames = beats_to_frames(note->time());
1335         const nframes64_t note_end_frames   = beats_to_frames(note->end_time());
1336
1337         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1338         const double y1 = midi_stream_view()->note_to_y(note->note());
1339         const double note_endpixel = trackview.editor().frame_to_pixel(note_end_frames - _region->start());
1340
1341         ev->property_x1() = x;
1342         ev->property_y1() = y1;
1343         if (note->length() > 0) {
1344                 ev->property_x2() = note_endpixel;
1345         } else {
1346                 ev->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1347         }
1348         ev->property_y2() = y1 + floor(midi_stream_view()->note_height());
1349
1350         if (note->length() == 0) {
1351                 if (_active_notes) {
1352                         assert(note->note() < 128);
1353                         // If this note is already active there's a stuck note,
1354                         // finish the old note rectangle
1355                         if (_active_notes[note->note()]) {
1356                                 CanvasNote* const old_rect = _active_notes[note->note()];
1357                                 boost::shared_ptr<NoteType> old_note = old_rect->note();
1358                                 old_rect->property_x2() = x;
1359                                 old_rect->property_outline_what() = (guint32) 0xF;
1360                         }
1361                         _active_notes[note->note()] = ev;
1362                 }
1363                 /* outline all but right edge */
1364                 ev->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
1365         } else {
1366                 /* outline all edges */
1367                 ev->property_outline_what() = (guint32) 0xF;
1368         }
1369 }
1370
1371 void
1372 MidiRegionView::update_hit (CanvasHit* ev)
1373 {
1374         boost::shared_ptr<NoteType> note = ev->note();
1375
1376         const nframes64_t note_start_frames = beats_to_frames(note->time());
1377         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1378         const double diamond_size = midi_stream_view()->note_height() / 2.0;
1379         const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
1380
1381         ev->move_to (x, y);
1382 }
1383
1384 /** Add a MIDI note to the view (with length).
1385  *
1386  * If in sustained mode, notes with length 0 will be considered active
1387  * notes, and resolve_note should be called when the corresponding note off
1388  * event arrives, to properly display the note.
1389  */
1390 void
1391 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note, bool visible)
1392 {
1393         CanvasNoteEvent* event = 0;
1394
1395         assert(note->time() >= 0);
1396         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
1397
1398         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1399
1400         if (midi_view()->note_mode() == Sustained) {
1401
1402                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
1403
1404                 update_note (ev_rect);
1405
1406                 event = ev_rect;
1407
1408                 MidiGhostRegion* gr;
1409
1410                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
1411                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
1412                                 gr->add_note(ev_rect);
1413                         }
1414                 }
1415
1416         } else if (midi_view()->note_mode() == Percussive) {
1417
1418                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
1419
1420                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
1421
1422                 update_hit (ev_diamond);
1423
1424                 event = ev_diamond;
1425
1426         } else {
1427                 event = 0;
1428         }
1429
1430         if (event) {
1431                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
1432                         note_selected(event, true);
1433                 }
1434
1435                 if (_marked_for_velocity.find(note) != _marked_for_velocity.end()) {
1436                         event->show_velocity();
1437                 }
1438                 event->on_channel_selection_change(_last_channel_selection);
1439                 _events.push_back(event);
1440
1441                 if (visible) {
1442                         event->show();
1443                 } else {
1444                         event->hide ();
1445                 }
1446         }
1447 }
1448
1449 void
1450 MidiRegionView::add_note (uint8_t channel, uint8_t number, uint8_t velocity,
1451                           Evoral::MusicalTime pos, Evoral::MusicalTime len)
1452 {
1453         boost::shared_ptr<NoteType> new_note (new NoteType (channel, pos, len, number, velocity));
1454
1455         start_diff_command (_("step add"));
1456         diff_add_note (new_note, true, false);
1457         apply_diff();
1458
1459         /* potentially extend region to hold new note */
1460
1461         nframes64_t end_frame = _region->position() + beats_to_frames (new_note->end_time());
1462         nframes64_t region_end = _region->position() + _region->length() - 1;
1463
1464         if (end_frame > region_end) {
1465                 _region->set_length (end_frame, this);
1466         } else {
1467                 redisplay_model ();
1468         }
1469 }
1470
1471 void
1472 MidiRegionView::add_pgm_change(PCEvent& program, const string& displaytext)
1473 {
1474         assert(program.time >= 0);
1475
1476         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1477         const double x = trackview.editor().frame_to_pixel(beats_to_frames(program.time));
1478
1479         double height = midi_stream_view()->contents_height();
1480
1481         boost::shared_ptr<CanvasProgramChange> pgm_change = boost::shared_ptr<CanvasProgramChange>(
1482                         new CanvasProgramChange(*this, *group,
1483                                         displaytext,
1484                                         height,
1485                                         x, 1.0,
1486                                         _model_name,
1487                                         _custom_device_mode,
1488                                         program.time, program.channel, program.value));
1489
1490         // Show unless program change is beyond the region bounds
1491         if (program.time - _region->start() >= _region->length() || program.time < _region->start()) {
1492                 pgm_change->hide();
1493         } else {
1494                 pgm_change->show();
1495         }
1496
1497         _pgm_changes.push_back(pgm_change);
1498 }
1499
1500 void
1501 MidiRegionView::get_patch_key_at(double time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1502 {
1503         cerr << "getting patch key at " << time << " for channel " << channel << endl;
1504         Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1505         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1506         float msb = -1.0;
1507         if (msb_control != 0) {
1508                 msb = int(msb_control->get_float(true, time));
1509                 cerr << "got msb " << msb;
1510         }
1511
1512         Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1513         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1514         float lsb = -1.0;
1515         if (lsb_control != 0) {
1516                 lsb = lsb_control->get_float(true, time);
1517                 cerr << " got lsb " << lsb;
1518         }
1519
1520         Evoral::Parameter program_change(MidiPgmChangeAutomation, channel, 0);
1521         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1522         float program_number = -1.0;
1523         if (program_control != 0) {
1524                 program_number = program_control->get_float(true, time);
1525                 cerr << " got program " << program_number << endl;
1526         }
1527
1528         key.msb = (int) floor(msb + 0.5);
1529         key.lsb = (int) floor(lsb + 0.5);
1530         key.program_number = (int) floor(program_number + 0.5);
1531         assert(key.is_sane());
1532 }
1533
1534
1535 void
1536 MidiRegionView::alter_program_change(PCEvent& old_program, const MIDI::Name::PatchPrimaryKey& new_patch)
1537 {
1538         // TODO: Get the real event here and alter them at the original times
1539         Evoral::Parameter bank_select_msb(MidiCCAutomation, old_program.channel, MIDI_CTL_MSB_BANK);
1540         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1541         if (msb_control != 0) {
1542                 msb_control->set_float(float(new_patch.msb), true, old_program.time);
1543         }
1544
1545         // TODO: Get the real event here and alter them at the original times
1546         Evoral::Parameter bank_select_lsb(MidiCCAutomation, old_program.channel, MIDI_CTL_LSB_BANK);
1547         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1548         if (lsb_control != 0) {
1549                 lsb_control->set_float(float(new_patch.lsb), true, old_program.time);
1550         }
1551
1552         Evoral::Parameter program_change(MidiPgmChangeAutomation, old_program.channel, 0);
1553         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1554
1555         assert(program_control != 0);
1556         program_control->set_float(float(new_patch.program_number), true, old_program.time);
1557
1558         redisplay_model();
1559 }
1560
1561 void
1562 MidiRegionView::program_selected(CanvasProgramChange& program, const MIDI::Name::PatchPrimaryKey& new_patch)
1563 {
1564         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1565         alter_program_change(program_change_event, new_patch);
1566 }
1567
1568 void
1569 MidiRegionView::previous_program(CanvasProgramChange& program)
1570 {
1571         MIDI::Name::PatchPrimaryKey key;
1572         get_patch_key_at(program.event_time(), program.channel(), key);
1573
1574         boost::shared_ptr<MIDI::Name::Patch> patch =
1575                 MIDI::Name::MidiPatchManager::instance().previous_patch(
1576                                 _model_name,
1577                                 _custom_device_mode,
1578                                 program.channel(),
1579                                 key);
1580
1581         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1582         if (patch) {
1583                 alter_program_change(program_change_event, patch->patch_primary_key());
1584         }
1585 }
1586
1587 void
1588 MidiRegionView::next_program(CanvasProgramChange& program)
1589 {
1590         MIDI::Name::PatchPrimaryKey key;
1591         get_patch_key_at(program.event_time(), program.channel(), key);
1592
1593         boost::shared_ptr<MIDI::Name::Patch> patch =
1594                 MIDI::Name::MidiPatchManager::instance().next_patch(
1595                                 _model_name,
1596                                 _custom_device_mode,
1597                                 program.channel(),
1598                                 key);
1599
1600         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1601         if (patch) {
1602                 alter_program_change(program_change_event, patch->patch_primary_key());
1603         }
1604 }
1605
1606 void
1607 MidiRegionView::maybe_remove_deleted_note_from_selection (CanvasNoteEvent* cne)
1608 {
1609         if (_selection.empty()) {
1610                 return;
1611         }
1612
1613         if (_selection.erase (cne) > 0) {
1614                 cerr << "Erased a CNE from selection\n";
1615         }
1616 }
1617
1618 void
1619 MidiRegionView::delete_selection()
1620 {
1621         if (_selection.empty()) {
1622                 return;
1623         }
1624
1625         start_diff_command (_("delete selection"));
1626
1627         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1628                 if ((*i)->selected()) {
1629                         _diff_command->remove((*i)->note());
1630                 }
1631         }
1632
1633         _selection.clear();
1634
1635         apply_diff ();
1636 }
1637
1638 void
1639 MidiRegionView::delete_note (boost::shared_ptr<NoteType> n)
1640 {
1641         start_diff_command (_("delete note"));
1642         _diff_command->remove (n);
1643         apply_diff ();
1644
1645         trackview.editor().hide_verbose_canvas_cursor ();
1646 }
1647
1648 void
1649 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1650 {
1651         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1652                 if ((*i)->selected() && (*i) != ev) {
1653                         (*i)->set_selected(false);
1654                         (*i)->hide_velocity();
1655                 }
1656         }
1657
1658         _selection.clear();
1659 }
1660
1661 void
1662 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1663 {
1664         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
1665                 if ((*i) != ev) {
1666
1667                         Selection::iterator tmp = i;
1668                         ++tmp;
1669
1670                         (*i)->set_selected (false);
1671                         _selection.erase (i);
1672
1673                         i = tmp;
1674
1675                 } else {
1676                         ++i;
1677                 }
1678         }
1679
1680         /* don't bother with removing this regionview from the editor selection,
1681            since we're about to add another note, and thus put/keep this
1682            regionview in the editor selection.
1683         */
1684
1685         if (!ev->selected()) {
1686                 add_to_selection (ev);
1687         }
1688 }
1689
1690 void
1691 MidiRegionView::select_matching_notes (uint8_t notenum, uint16_t channel_mask, bool add, bool extend)
1692 {
1693         uint8_t low_note = 127;
1694         uint8_t high_note = 0;
1695         MidiModel::Notes& notes (_model->notes());
1696         _optimization_iterator = _events.begin();
1697
1698         if (!add) {
1699                 clear_selection ();
1700         }
1701
1702         if (extend && _selection.empty()) {
1703                 extend = false;
1704         }
1705
1706         if (extend) {
1707
1708                 /* scan existing selection to get note range */
1709
1710                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1711                         if ((*i)->note()->note() < low_note) {
1712                                 low_note = (*i)->note()->note();
1713                         }
1714                         if ((*i)->note()->note() > high_note) {
1715                                 high_note = (*i)->note()->note();
1716                         }
1717                 }
1718
1719                 low_note = min (low_note, notenum);
1720                 high_note = max (high_note, notenum);
1721         }
1722
1723         no_sound_notes = true;
1724
1725         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1726
1727                 boost::shared_ptr<NoteType> note (*n);
1728                 CanvasNoteEvent* cne;
1729                 bool select = false;
1730
1731                 if (((1 << note->channel()) & channel_mask) != 0) {
1732                         if (extend) {
1733                                 if ((note->note() >= low_note && note->note() <= high_note)) {
1734                                         select = true;
1735                                 }
1736                         } else if (note->note() == notenum) {
1737                                 select = true;
1738                         }
1739                 }
1740
1741                 if (select) {
1742                         if ((cne = find_canvas_note (note)) != 0) {
1743                                 // extend is false because we've taken care of it,
1744                                 // since it extends by time range, not pitch.
1745                                 note_selected (cne, add, false);
1746                         }
1747                 }
1748
1749                 add = true; // we need to add all remaining matching notes, even if the passed in value was false (for "set")
1750
1751         }
1752
1753         no_sound_notes = false;
1754 }
1755
1756 void
1757 MidiRegionView::toggle_matching_notes (uint8_t notenum, uint16_t channel_mask)
1758 {
1759         MidiModel::Notes& notes (_model->notes());
1760         _optimization_iterator = _events.begin();
1761
1762         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1763
1764                 boost::shared_ptr<NoteType> note (*n);
1765                 CanvasNoteEvent* cne;
1766
1767                 if (note->note() == notenum && (((0x0001 << note->channel()) & channel_mask) != 0)) {
1768                         if ((cne = find_canvas_note (note)) != 0) {
1769                                 if (cne->selected()) {
1770                                         note_deselected (cne);
1771                                 } else {
1772                                         note_selected (cne, true, false);
1773                                 }
1774                         }
1775                 }
1776         }
1777 }
1778
1779 void
1780 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add, bool extend)
1781 {
1782         if (!add) {
1783                 clear_selection_except(ev);
1784         }
1785
1786         if (!extend) {
1787
1788                 if (!ev->selected()) {
1789                         add_to_selection (ev);
1790                 }
1791
1792         } else {
1793                 /* find end of latest note selected, select all between that and the start of "ev" */
1794
1795                 Evoral::MusicalTime earliest = DBL_MAX;
1796                 Evoral::MusicalTime latest = 0;
1797
1798                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1799                         if ((*i)->note()->end_time() > latest) {
1800                                 latest = (*i)->note()->end_time();
1801                         }
1802                         if ((*i)->note()->time() < earliest) {
1803                                 earliest = (*i)->note()->time();
1804                         }
1805                 }
1806
1807                 if (ev->note()->end_time() > latest) {
1808                         latest = ev->note()->end_time();
1809                 }
1810
1811                 if (ev->note()->time() < earliest) {
1812                         earliest = ev->note()->time();
1813                 }
1814
1815                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1816
1817                         /* find notes entirely within OR spanning the earliest..latest range */
1818
1819                         if (((*i)->note()->time() >= earliest && (*i)->note()->end_time() <= latest) ||
1820                             ((*i)->note()->time() <= earliest && (*i)->note()->end_time() >= latest)) {
1821                                 add_to_selection (*i);
1822                         }
1823
1824 #if 0
1825                         /* if events were guaranteed to be time sorted, we could do this.
1826                            but as of sept 10th 2009, they no longer are.
1827                         */
1828
1829                         if ((*i)->note()->time() > latest) {
1830                                 break;
1831                         }
1832 #endif
1833                 }
1834         }
1835 }
1836
1837 void
1838 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev)
1839 {
1840         remove_from_selection (ev);
1841 }
1842
1843 void
1844 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
1845 {
1846         if (x1 > x2) {
1847                 swap (x1, x2);
1848         }
1849
1850         if (y1 > y2) {
1851                 swap (y1, y2);
1852         }
1853
1854         // TODO: Make this faster by storing the last updated selection rect, and only
1855         // adjusting things that are in the area that appears/disappeared.
1856         // We probably need a tree to be able to find events in O(log(n)) time.
1857
1858         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1859
1860                 /* check if any corner of the note is inside the rect
1861
1862                    Notes:
1863                      1) this is computing "touched by", not "contained by" the rect.
1864                      2) this does not require that events be sorted in time.
1865                  */
1866
1867                 const double ix1 = (*i)->x1();
1868                 const double ix2 = (*i)->x2();
1869                 const double iy1 = (*i)->y1();
1870                 const double iy2 = (*i)->y2();
1871
1872                 if ((ix1 >= x1 && ix1 <= x2 && iy1 >= y1 && iy1 <= y2) ||
1873                     (ix1 >= x1 && ix1 <= x2 && iy2 >= y1 && iy2 <= y2) ||
1874                     (ix2 >= x1 && ix2 <= x2 && iy1 >= y1 && iy1 <= y2) ||
1875                     (ix2 >= x1 && ix2 <= x2 && iy2 >= y1 && iy2 <= y2)) {
1876
1877                         // Inside rectangle
1878                         if (!(*i)->selected()) {
1879                                 add_to_selection (*i);
1880                         }
1881                 } else if ((*i)->selected()) {
1882                         // Not inside rectangle
1883                         remove_from_selection (*i);
1884                 }
1885         }
1886 }
1887
1888 void
1889 MidiRegionView::remove_from_selection (CanvasNoteEvent* ev)
1890 {
1891         Selection::iterator i = _selection.find (ev);
1892
1893         if (i != _selection.end()) {
1894                 _selection.erase (i);
1895         }
1896
1897         ev->set_selected (false);
1898         ev->hide_velocity ();
1899
1900         if (_selection.empty()) {
1901                 PublicEditor& editor (trackview.editor());
1902                 editor.get_selection().remove (this);
1903         }
1904 }
1905
1906 void
1907 MidiRegionView::add_to_selection (CanvasNoteEvent* ev)
1908 {
1909         bool add_mrv_selection = false;
1910
1911         if (_selection.empty()) {
1912                 add_mrv_selection = true;
1913         }
1914
1915         if (_selection.insert (ev).second) {
1916                 ev->set_selected (true);
1917                 play_midi_note ((ev)->note());
1918         }
1919
1920         if (add_mrv_selection) {
1921                 PublicEditor& editor (trackview.editor());
1922                 editor.get_selection().add (this);
1923         }
1924 }
1925
1926 void
1927 MidiRegionView::move_selection(double dx, double dy)
1928 {
1929         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1930                 (*i)->move_event(dx, dy);
1931         }
1932 }
1933
1934 void
1935 MidiRegionView::note_dropped(CanvasNoteEvent *, double dt, int8_t dnote)
1936 {
1937         assert (!_selection.empty());
1938
1939         uint8_t lowest_note_in_selection  = 127;
1940         uint8_t highest_note_in_selection = 0;
1941         uint8_t highest_note_difference = 0;
1942
1943         // find highest and lowest notes first
1944
1945         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1946                 uint8_t pitch = (*i)->note()->note();
1947                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
1948                 highest_note_in_selection = std::max(highest_note_in_selection, pitch);
1949         }
1950
1951         /*
1952         cerr << "dnote: " << (int) dnote << endl;
1953         cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
1954              << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
1955         cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
1956              << int(highest_note_in_selection) << endl;
1957         cerr << "selection size: " << _selection.size() << endl;
1958         cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
1959         */
1960
1961         // Make sure the note pitch does not exceed the MIDI standard range
1962         if (highest_note_in_selection + dnote > 127) {
1963                 highest_note_difference = highest_note_in_selection - 127;
1964         }
1965
1966         start_diff_command(_("move notes"));
1967
1968         for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ++i) {
1969
1970                 nframes64_t start_frames = beats_to_frames((*i)->note()->time());
1971
1972                 if (dt >= 0) {
1973                         start_frames += snap_frame_to_frame(trackview.editor().pixel_to_frame(dt));
1974                 } else {
1975                         start_frames -= snap_frame_to_frame(trackview.editor().pixel_to_frame(-dt));
1976                 }
1977
1978                 Evoral::MusicalTime new_time = frames_to_beats(start_frames);
1979
1980                 if (new_time < 0) {
1981                         continue;
1982                 }
1983
1984                 diff_add_change (*i, MidiModel::DiffCommand::StartTime, new_time);
1985
1986                 uint8_t original_pitch = (*i)->note()->note();
1987                 uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
1988
1989                 // keep notes in standard midi range
1990                 clamp_to_0_127(new_pitch);
1991
1992                 // keep original pitch if note is dragged outside valid midi range
1993                 if ((original_pitch != 0 && new_pitch == 0)
1994                                 || (original_pitch != 127 && new_pitch == 127)) {
1995                         new_pitch = original_pitch;
1996                 }
1997
1998                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
1999                 highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
2000
2001                 diff_add_change (*i, MidiModel::DiffCommand::NoteNumber, new_pitch);
2002         }
2003
2004         apply_diff();
2005
2006         // care about notes being moved beyond the upper/lower bounds on the canvas
2007         if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
2008             highest_note_in_selection > midi_stream_view()->highest_note()) {
2009                 midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
2010         }
2011 }
2012
2013 nframes64_t
2014 MidiRegionView::snap_pixel_to_frame(double x)
2015 {
2016         PublicEditor& editor = trackview.editor();
2017         // x is region relative, convert it to global absolute frames
2018         nframes64_t frame = editor.pixel_to_frame(x) + _region->position();
2019         editor.snap_to(frame);
2020         return frame - _region->position(); // convert back to region relative
2021 }
2022
2023 nframes64_t
2024 MidiRegionView::snap_frame_to_frame(nframes64_t x)
2025 {
2026         PublicEditor& editor = trackview.editor();
2027         // x is region relative, convert it to global absolute frames
2028         nframes64_t frame = x + _region->position();
2029         editor.snap_to(frame);
2030         return frame - _region->position(); // convert back to region relative
2031 }
2032
2033 double
2034 MidiRegionView::snap_to_pixel(double x)
2035 {
2036         return (double) trackview.editor().frame_to_pixel(snap_pixel_to_frame(x));
2037 }
2038
2039 double
2040 MidiRegionView::get_position_pixels()
2041 {
2042         nframes64_t region_frame = get_position();
2043         return trackview.editor().frame_to_pixel(region_frame);
2044 }
2045
2046 double
2047 MidiRegionView::get_end_position_pixels()
2048 {
2049         nframes64_t frame = get_position() + get_duration ();
2050         return trackview.editor().frame_to_pixel(frame);
2051 }
2052
2053 nframes64_t
2054 MidiRegionView::beats_to_frames(double beats) const
2055 {
2056         return _time_converter.to(beats);
2057 }
2058
2059 double
2060 MidiRegionView::frames_to_beats(nframes64_t frames) const
2061 {
2062         return _time_converter.from(frames);
2063 }
2064
2065 void
2066 MidiRegionView::begin_resizing (bool /*at_front*/)
2067 {
2068         _resize_data.clear();
2069
2070         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2071                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
2072
2073                 // only insert CanvasNotes into the map
2074                 if (note) {
2075                         NoteResizeData *resize_data = new NoteResizeData();
2076                         resize_data->canvas_note = note;
2077
2078                         // create a new SimpleRect from the note which will be the resize preview
2079                         SimpleRect *resize_rect = new SimpleRect(
2080                                         *group, note->x1(), note->y1(), note->x2(), note->y2());
2081
2082                         // calculate the colors: get the color settings
2083                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
2084                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
2085                                         128);
2086
2087                         // make the resize preview notes more transparent and bright
2088                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
2089
2090                         // calculate color based on note velocity
2091                         resize_rect->property_fill_color_rgba() = UINT_INTERPOLATE(
2092                                 CanvasNoteEvent::meter_style_fill_color(note->note()->velocity(), note->selected()),
2093                                         fill_color,
2094                                         0.85);
2095
2096                         resize_rect->property_outline_color_rgba() = CanvasNoteEvent::calculate_outline(
2097                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
2098
2099                         resize_data->resize_rect = resize_rect;
2100                         _resize_data.push_back(resize_data);
2101                 }
2102         }
2103 }
2104
2105 /** Update resizing notes while user drags.
2106  * @param primary `primary' note for the drag; ie the one that is used as the reference in non-relative mode.
2107  * @param at_front which end of the note (true == note on, false == note off)
2108  * @param delta_x change in mouse position since the start of the drag
2109  * @param relative true if relative resizing is taking place, false if absolute resizing.  This only makes
2110  * a difference when multiple notes are being resized; in relative mode, each note's length is changed by the
2111  * amount of the drag.  In non-relative mode, all selected notes are set to have the same start or end point
2112  * as the \a primary note.
2113  */
2114 void
2115 MidiRegionView::update_resizing (ArdourCanvas::CanvasNote* primary, bool at_front, double delta_x, bool relative)
2116 {
2117         bool cursor_set = false;
2118
2119         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2120                 SimpleRect* resize_rect = (*i)->resize_rect;
2121                 CanvasNote* canvas_note = (*i)->canvas_note;
2122                 double current_x;
2123
2124                 if (at_front) {
2125                         if (relative) {
2126                                 current_x = canvas_note->x1() + delta_x;
2127                         } else {
2128                                 current_x = primary->x1() + delta_x;
2129                         }
2130                 } else {
2131                         if (relative) {
2132                                 current_x = canvas_note->x2() + delta_x;
2133                         } else {
2134                                 current_x = primary->x2() + delta_x;
2135                         }
2136                 }
2137
2138                 if (at_front) {
2139                         resize_rect->property_x1() = snap_to_pixel(current_x);
2140                         resize_rect->property_x2() = canvas_note->x2();
2141                 } else {
2142                         resize_rect->property_x2() = snap_to_pixel(current_x);
2143                         resize_rect->property_x1() = canvas_note->x1();
2144                 }
2145
2146                 if (!cursor_set) {
2147                         double beats;
2148
2149                         beats = snap_pixel_to_frame (current_x);
2150                         beats = frames_to_beats (beats);
2151
2152                         double len;
2153
2154                         if (at_front) {
2155                                 if (beats < canvas_note->note()->end_time()) {
2156                                         len = canvas_note->note()->time() - beats;
2157                                         len += canvas_note->note()->length();
2158                                 } else {
2159                                         len = 0;
2160                                 }
2161                         } else {
2162                                 if (beats >= canvas_note->note()->end_time()) {
2163                                         len = beats - canvas_note->note()->time();
2164                                 } else {
2165                                         len = 0;
2166                                 }
2167                         }
2168
2169                         char buf[16];
2170                         snprintf (buf, sizeof (buf), "%.3g beats", len);
2171                         trackview.editor().show_verbose_canvas_cursor_with (buf);
2172
2173                         cursor_set = true;
2174                 }
2175
2176         }
2177 }
2178
2179
2180 /** Finish resizing notes when the user releases the mouse button.
2181  *  Parameters the same as for \a update_resizing().
2182  */
2183 void
2184 MidiRegionView::commit_resizing (ArdourCanvas::CanvasNote* primary, bool at_front, double delta_x, bool relative)
2185 {
2186         start_diff_command(_("resize notes"));
2187
2188         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2189                 CanvasNote*  canvas_note = (*i)->canvas_note;
2190                 SimpleRect*  resize_rect = (*i)->resize_rect;
2191                 double current_x;
2192
2193                 if (at_front) {
2194                         if (relative) {
2195                                 current_x = canvas_note->x1() + delta_x;
2196                         } else {
2197                                 current_x = primary->x1() + delta_x;
2198                         }
2199                 } else {
2200                         if (relative) {
2201                                 current_x = canvas_note->x2() + delta_x;
2202                         } else {
2203                                 current_x = primary->x2() + delta_x;
2204                         }
2205                 }
2206
2207                 current_x = snap_pixel_to_frame (current_x);
2208                 current_x = frames_to_beats (current_x);
2209
2210                 if (at_front && current_x < canvas_note->note()->end_time()) {
2211                         diff_add_change (canvas_note, MidiModel::DiffCommand::StartTime, current_x);
2212
2213                         double len = canvas_note->note()->time() - current_x;
2214                         len += canvas_note->note()->length();
2215
2216                         if (len > 0) {
2217                                 /* XXX convert to beats */
2218                                 diff_add_change (canvas_note, MidiModel::DiffCommand::Length, len);
2219                         }
2220                 }
2221
2222                 if (!at_front) {
2223                         double len = current_x - canvas_note->note()->time();
2224
2225                         if (len > 0) {
2226                                 /* XXX convert to beats */
2227                                 diff_add_change (canvas_note, MidiModel::DiffCommand::Length, len);
2228                         }
2229                 }
2230
2231                 delete resize_rect;
2232                 delete (*i);
2233         }
2234
2235         _resize_data.clear();
2236         apply_diff();
2237 }
2238
2239 void
2240 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
2241 {
2242         uint8_t new_velocity;
2243
2244         if (relative) {
2245                 new_velocity = event->note()->velocity() + velocity;
2246                 clamp_to_0_127(new_velocity);
2247         } else {
2248                 new_velocity = velocity;
2249         }
2250
2251         event->set_selected (event->selected()); // change color
2252
2253         diff_add_change (event, MidiModel::DiffCommand::Velocity, new_velocity);
2254 }
2255
2256 void
2257 MidiRegionView::change_note_note (CanvasNoteEvent* event, int8_t note, bool relative)
2258 {
2259         uint8_t new_note;
2260
2261         if (relative) {
2262                 new_note = event->note()->note() + note;
2263         } else {
2264                 new_note = note;
2265         }
2266
2267         clamp_to_0_127 (new_note);
2268         diff_add_change (event, MidiModel::DiffCommand::NoteNumber, new_note);
2269 }
2270
2271 void
2272 MidiRegionView::trim_note (CanvasNoteEvent* event, Evoral::MusicalTime front_delta, Evoral::MusicalTime end_delta)
2273 {
2274         bool change_start = false;
2275         bool change_length = false;
2276         Evoral::MusicalTime new_start = 0;
2277         Evoral::MusicalTime new_length = 0;
2278
2279         /* NOTE: the semantics of the two delta arguments are slightly subtle:
2280
2281            front_delta: if positive - move the start of the note later in time (shortening it)
2282                         if negative - move the start of the note earlier in time (lengthening it)
2283
2284            end_delta:   if positive - move the end of the note later in time (lengthening it)
2285                         if negative - move the end of the note earlier in time (shortening it)
2286          */
2287
2288         if (front_delta) {
2289                 if (front_delta < 0) {
2290
2291                         if (event->note()->time() < -front_delta) {
2292                                 new_start = 0;
2293                         } else {
2294                                 new_start = event->note()->time() + front_delta; // moves earlier
2295                         }
2296
2297                         /* start moved toward zero, so move the end point out to where it used to be.
2298                            Note that front_delta is negative, so this increases the length.
2299                         */
2300
2301                         new_length = event->note()->length() - front_delta;
2302                         change_start = true;
2303                         change_length = true;
2304
2305                 } else {
2306
2307                         Evoral::MusicalTime new_pos = event->note()->time() + front_delta;
2308
2309                         if (new_pos < event->note()->end_time()) {
2310                                 new_start = event->note()->time() + front_delta;
2311                                 /* start moved toward the end, so move the end point back to where it used to be */
2312                                 new_length = event->note()->length() - front_delta;
2313                                 change_start = true;
2314                                 change_length = true;
2315                         }
2316                 }
2317
2318         }
2319
2320         if (end_delta) {
2321                 bool can_change = true;
2322                 if (end_delta < 0) {
2323                         if (event->note()->length() < -end_delta) {
2324                                 can_change = false;
2325                         }
2326                 }
2327
2328                 if (can_change) {
2329                         new_length = event->note()->length() + end_delta;
2330                         change_length = true;
2331                 }
2332         }
2333
2334         if (change_start) {
2335                 diff_add_change (event, MidiModel::DiffCommand::StartTime, new_start);
2336         }
2337
2338         if (change_length) {
2339                 diff_add_change (event, MidiModel::DiffCommand::Length, new_length);
2340         }
2341 }
2342
2343 void
2344 MidiRegionView::change_note_time (CanvasNoteEvent* event, Evoral::MusicalTime delta, bool relative)
2345 {
2346         Evoral::MusicalTime new_time;
2347
2348         if (relative) {
2349                 if (delta < 0.0) {
2350                         if (event->note()->time() < -delta) {
2351                                 new_time = 0;
2352                         } else {
2353                                 new_time = event->note()->time() + delta;
2354                         }
2355                 } else {
2356                         new_time = event->note()->time() + delta;
2357                 }
2358         } else {
2359                 new_time = delta;
2360         }
2361
2362         diff_add_change (event, MidiModel::DiffCommand::StartTime, new_time);
2363 }
2364
2365 void
2366 MidiRegionView::change_velocities (bool up, bool fine, bool allow_smush)
2367 {
2368         int8_t delta;
2369
2370         if (_selection.empty()) {
2371                 return;
2372         }
2373
2374         if (fine) {
2375                 delta = 1;
2376         } else {
2377                 delta = 10;
2378         }
2379
2380         if (!up) {
2381                 delta = -delta;
2382         }
2383
2384         if (!allow_smush) {
2385                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2386                         if ((*i)->note()->velocity() + delta == 0 || (*i)->note()->velocity() + delta == 127) {
2387                                 return;
2388                         }
2389                 }
2390         }
2391
2392         start_diff_command(_("change velocities"));
2393
2394         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
2395                 Selection::iterator next = i;
2396                 ++next;
2397                 change_note_velocity (*i, delta, true);
2398                 i = next;
2399         }
2400
2401         apply_diff();
2402
2403         if (!_selection.empty()) {
2404                 char buf[24];
2405                 snprintf (buf, sizeof (buf), "Vel %d",
2406                           (int) (*_selection.begin())->note()->velocity());
2407                 trackview.editor().show_verbose_canvas_cursor_with (buf);
2408         }
2409 }
2410
2411
2412 void
2413 MidiRegionView::transpose (bool up, bool fine, bool allow_smush)
2414 {
2415         if (_selection.empty()) {
2416                 return;
2417         }
2418
2419         int8_t delta;
2420
2421         if (fine) {
2422                 delta = 1;
2423         } else {
2424                 delta = 12;
2425         }
2426
2427         if (!up) {
2428                 delta = -delta;
2429         }
2430
2431         if (!allow_smush) {
2432                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2433                         if (!up) {
2434                                 if ((int8_t) (*i)->note()->note() + delta <= 0) {
2435                                         return;
2436                                 }
2437                         } else {
2438                                 if ((int8_t) (*i)->note()->note() + delta > 127) {
2439                                         return;
2440                                 }
2441                         }
2442                 }
2443         }
2444
2445         start_diff_command (_("transpose"));
2446
2447         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2448                 Selection::iterator next = i;
2449                 ++next;
2450                 change_note_note (*i, delta, true);
2451                 i = next;
2452         }
2453
2454         apply_diff ();
2455 }
2456
2457 void
2458 MidiRegionView::change_note_lengths (bool fine, bool shorter, bool start, bool end)
2459 {
2460         Evoral::MusicalTime delta;
2461
2462         if (fine) {
2463                 delta = 1.0/128.0;
2464         } else {
2465                 /* grab the current grid distance */
2466                 bool success;
2467                 delta = trackview.editor().get_grid_type_as_beats (success, _region->position());
2468                 if (!success) {
2469                         /* XXX cannot get grid type as beats ... should always be possible ... FIX ME */
2470                         cerr << "Grid type not available as beats - TO BE FIXED\n";
2471                         return;
2472                 }
2473         }
2474
2475         if (shorter) {
2476                 delta = -delta;
2477         }
2478
2479         start_diff_command (_("change note lengths"));
2480
2481         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2482                 Selection::iterator next = i;
2483                 ++next;
2484
2485                 /* note the negation of the delta for start */
2486
2487                 trim_note (*i, (start ? -delta : 0), (end ? delta : 0));
2488                 i = next;
2489         }
2490
2491         apply_diff ();
2492
2493 }
2494
2495 void
2496 MidiRegionView::nudge_notes (bool forward)
2497 {
2498         if (_selection.empty()) {
2499                 return;
2500         }
2501
2502         /* pick a note as the point along the timeline to get the nudge distance.
2503            its not necessarily the earliest note, so we may want to pull the notes out
2504            into a vector and sort before using the first one.
2505         */
2506
2507         nframes64_t ref_point = _region->position() + beats_to_frames ((*(_selection.begin()))->note()->time());
2508         nframes64_t unused;
2509         nframes64_t distance;
2510
2511         if (trackview.editor().snap_mode() == Editing::SnapOff) {
2512
2513                 /* grid is off - use nudge distance */
2514
2515                 distance = trackview.editor().get_nudge_distance (ref_point, unused);
2516
2517         } else {
2518
2519                 /* use grid */
2520
2521                 nframes64_t next_pos = ref_point;
2522
2523                 if (forward) {
2524                         /* XXX need check on max_frames, but that needs max_frames64 or something */
2525                         next_pos += 1;
2526                 } else {
2527                         if (next_pos == 0) {
2528                                 return;
2529                         }
2530                         next_pos -= 1;
2531                 }
2532
2533                 trackview.editor().snap_to (next_pos, (forward ? 1 : -1), false);
2534                 distance = ref_point - next_pos;
2535         }
2536
2537         if (distance == 0) {
2538                 return;
2539         }
2540
2541         Evoral::MusicalTime delta = frames_to_beats (fabs (distance));
2542
2543         if (!forward) {
2544                 delta = -delta;
2545         }
2546
2547         start_diff_command (_("nudge"));
2548
2549         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2550                 Selection::iterator next = i;
2551                 ++next;
2552                 change_note_time (*i, delta, true);
2553                 i = next;
2554         }
2555
2556         apply_diff ();
2557 }
2558
2559 void
2560 MidiRegionView::change_channel(uint8_t channel)
2561 {
2562         start_diff_command(_("change channel"));
2563         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2564                 diff_add_change (*i, MidiModel::DiffCommand::Channel, channel);
2565         }
2566
2567         apply_diff();
2568 }
2569
2570
2571 void
2572 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
2573 {
2574         if (_mouse_state == SelectTouchDragging) {
2575                 note_selected (ev, true);
2576         }
2577
2578         show_verbose_canvas_cursor (ev->note ());
2579 }
2580
2581 void
2582 MidiRegionView::note_left (ArdourCanvas::CanvasNoteEvent* note)
2583 {
2584         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2585                 (*i)->hide_velocity ();
2586         }
2587
2588         trackview.editor().hide_verbose_canvas_cursor ();
2589 }
2590
2591 void
2592 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
2593 {
2594         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
2595         if (msrc)
2596                 display_model(msrc->model());
2597 }
2598
2599 void
2600 MidiRegionView::set_frame_color()
2601 {
2602         if (frame) {
2603                 if (_selected && should_show_selection) {
2604                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
2605                 } else {
2606                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
2607                 }
2608         }
2609 }
2610
2611 void
2612 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
2613 {
2614         switch (mode) {
2615         case AllChannels:
2616         case FilterChannels:
2617                 _force_channel = -1;
2618                 break;
2619         case ForceChannel:
2620                 _force_channel = mask;
2621                 mask = 0xFFFF; // Show all notes as active (below)
2622         };
2623
2624         // Update notes for selection
2625         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2626                 (*i)->on_channel_selection_change(mask);
2627         }
2628
2629         _last_channel_selection = mask;
2630 }
2631
2632 void
2633 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
2634 {
2635         _model_name         = model;
2636         _custom_device_mode = custom_device_mode;
2637         redisplay_model();
2638 }
2639
2640 void
2641 MidiRegionView::cut_copy_clear (Editing::CutCopyOp op)
2642 {
2643         if (_selection.empty()) {
2644                 return;
2645         }
2646
2647         PublicEditor& editor (trackview.editor());
2648
2649         switch (op) {
2650         case Cut:
2651         case Copy:
2652                 editor.get_cut_buffer().add (selection_as_cut_buffer());
2653                 break;
2654         default:
2655                 break;
2656         }
2657
2658         if (op != Copy) {
2659
2660                 start_diff_command();
2661
2662                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2663                         switch (op) {
2664                         case Copy:
2665                                 break;
2666                         case Cut:
2667                         case Clear:
2668                                 diff_remove_note (*i);
2669                                 break;
2670                         }
2671                 }
2672
2673                 apply_diff();
2674         }
2675 }
2676
2677 MidiCutBuffer*
2678 MidiRegionView::selection_as_cut_buffer () const
2679 {
2680         Notes notes;
2681
2682         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2683                 NoteType* n = (*i)->note().get();
2684                 notes.insert (boost::shared_ptr<NoteType> (new NoteType (*n)));
2685         }
2686
2687         MidiCutBuffer* cb = new MidiCutBuffer (trackview.session());
2688         cb->set (notes);
2689
2690         return cb;
2691 }
2692
2693 void
2694 MidiRegionView::paste (nframes64_t pos, float times, const MidiCutBuffer& mcb)
2695 {
2696         if (mcb.empty()) {
2697                 return;
2698         }
2699
2700         start_diff_command (_("paste"));
2701
2702         Evoral::MusicalTime beat_delta;
2703         Evoral::MusicalTime paste_pos_beats;
2704         Evoral::MusicalTime duration;
2705         Evoral::MusicalTime end_point = 0;
2706
2707         duration = (*mcb.notes().rbegin())->end_time() - (*mcb.notes().begin())->time();
2708         paste_pos_beats = frames_to_beats (pos - _region->position());
2709         beat_delta = (*mcb.notes().begin())->time() - paste_pos_beats;
2710         paste_pos_beats = 0;
2711
2712         _selection.clear ();
2713
2714         for (int n = 0; n < (int) times; ++n) {
2715
2716                 for (Notes::const_iterator i = mcb.notes().begin(); i != mcb.notes().end(); ++i) {
2717
2718                         boost::shared_ptr<NoteType> copied_note (new NoteType (*((*i).get())));
2719                         copied_note->set_time (paste_pos_beats + copied_note->time() - beat_delta);
2720
2721                         /* make all newly added notes selected */
2722
2723                         diff_add_note (copied_note, true);
2724                         end_point = copied_note->end_time();
2725                 }
2726
2727                 paste_pos_beats += duration;
2728         }
2729
2730         /* if we pasted past the current end of the region, extend the region */
2731
2732         nframes64_t end_frame = _region->position() + beats_to_frames (end_point);
2733         nframes64_t region_end = _region->position() + _region->length() - 1;
2734
2735         if (end_frame > region_end) {
2736
2737                 trackview.session()->begin_reversible_command (_("paste"));
2738
2739                 _region->clear_history ();
2740                 _region->set_length (end_frame, this);
2741                 trackview.session()->add_command (new StatefulDiffCommand (_region));
2742         }
2743
2744         apply_diff ();
2745 }
2746
2747 struct EventNoteTimeEarlyFirstComparator {
2748     bool operator() (CanvasNoteEvent* a, CanvasNoteEvent* b) {
2749             return a->note()->time() < b->note()->time();
2750     }
2751 };
2752
2753 void
2754 MidiRegionView::time_sort_events ()
2755 {
2756         if (!_sort_needed) {
2757                 return;
2758         }
2759
2760         EventNoteTimeEarlyFirstComparator cmp;
2761         _events.sort (cmp);
2762
2763         _sort_needed = false;
2764 }
2765
2766 void
2767 MidiRegionView::goto_next_note ()
2768 {
2769         // nframes64_t pos = -1;
2770         bool use_next = false;
2771
2772         if (_events.back()->selected()) {
2773                 return;
2774         }
2775
2776         time_sort_events ();
2777
2778         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2779                 if ((*i)->selected()) {
2780                         use_next = true;
2781                         continue;
2782                 } else if (use_next) {
2783                         unique_select (*i);
2784                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
2785                         return;
2786                 }
2787         }
2788
2789         /* use the first one */
2790
2791         unique_select (_events.front());
2792
2793 }
2794
2795 void
2796 MidiRegionView::goto_previous_note ()
2797 {
2798         // nframes64_t pos = -1;
2799         bool use_next = false;
2800
2801         if (_events.front()->selected()) {
2802                 return;
2803         }
2804
2805         time_sort_events ();
2806
2807         for (Events::reverse_iterator i = _events.rbegin(); i != _events.rend(); ++i) {
2808                 if ((*i)->selected()) {
2809                         use_next = true;
2810                         continue;
2811                 } else if (use_next) {
2812                         unique_select (*i);
2813                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
2814                         return;
2815                 }
2816         }
2817
2818         /* use the last one */
2819
2820         unique_select (*(_events.rbegin()));
2821 }
2822
2823 void
2824 MidiRegionView::selection_as_notelist (Notes& selected, bool allow_all_if_none_selected)
2825 {
2826         bool had_selected = false;
2827
2828         time_sort_events ();
2829
2830         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2831                 if ((*i)->selected()) {
2832                         selected.insert ((*i)->note());
2833                         had_selected = true;
2834                 }
2835         }
2836
2837         if (allow_all_if_none_selected && !had_selected) {
2838                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2839                         selected.insert ((*i)->note());
2840                 }
2841         }
2842 }
2843
2844 void
2845 MidiRegionView::update_ghost_note (double x, double y)
2846 {
2847         _last_ghost_x = x;
2848         _last_ghost_y = y;
2849
2850         group->w2i (x, y);
2851         nframes64_t f = trackview.editor().pixel_to_frame (x) + _region->position ();
2852         trackview.editor().snap_to (f);
2853         f -= _region->position ();
2854
2855         bool success;
2856         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, f);
2857         if (!success) {
2858                 beats = 1;
2859         }
2860
2861         double length = frames_to_beats (snap_frame_to_frame (f + beats_to_frames (beats)) - f);
2862
2863         _ghost_note->note()->set_time (frames_to_beats (f + _region->start()));
2864         _ghost_note->note()->set_length (length);
2865         _ghost_note->note()->set_note (midi_stream_view()->y_to_note (y));
2866
2867         update_note (_ghost_note);
2868
2869         show_verbose_canvas_cursor (_ghost_note->note ());
2870 }
2871
2872 void
2873 MidiRegionView::create_ghost_note (double x, double y)
2874 {
2875         delete _ghost_note;
2876         _ghost_note = 0;
2877
2878         boost::shared_ptr<NoteType> g (new NoteType);
2879         _ghost_note = new NoEventCanvasNote (*this, *group, g);
2880         update_ghost_note (x, y);
2881         _ghost_note->show ();
2882
2883         _last_ghost_x = x;
2884         _last_ghost_y = y;
2885
2886         show_verbose_canvas_cursor (_ghost_note->note ());
2887 }
2888
2889 void
2890 MidiRegionView::snap_changed ()
2891 {
2892         if (!_ghost_note) {
2893                 return;
2894         }
2895
2896         create_ghost_note (_last_ghost_x, _last_ghost_y);
2897 }
2898
2899 void
2900 MidiRegionView::show_verbose_canvas_cursor (boost::shared_ptr<NoteType> n) const
2901 {
2902         char buf[24];
2903         snprintf (buf, sizeof (buf), "%s (%d)\nVel %d",
2904                   Evoral::midi_note_name (n->note()).c_str(),
2905                   (int) n->note (),
2906                   (int) n->velocity());
2907         trackview.editor().show_verbose_canvas_cursor_with (buf);
2908 }
2909
2910 void
2911 MidiRegionView::drop_down_keys ()
2912 {
2913         _mouse_state = None;
2914 }
2915
2916 void
2917 MidiRegionView::maybe_select_by_position (GdkEventButton* ev, double x, double y)
2918 {
2919         double note = midi_stream_view()->y_to_note(y);
2920         Events e;
2921         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
2922
2923         cerr << "Selecting by position\n";
2924
2925         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
2926
2927         if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
2928                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchGreaterThanOrEqual, (uint8_t) floor (note), chn_mask);
2929         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
2930                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchLessThanOrEqual, (uint8_t) floor (note), chn_mask);
2931         } else {
2932                 return;
2933         }
2934
2935         bool add_mrv_selection = false;
2936
2937         if (_selection.empty()) {
2938                 add_mrv_selection = true;
2939         }
2940
2941         for (Events::iterator i = e.begin(); i != e.end(); ++i) {
2942                 if (_selection.insert (*i).second) {
2943                         (*i)->set_selected (true);
2944                 }
2945         }
2946
2947         if (add_mrv_selection) {
2948                 PublicEditor& editor (trackview.editor());
2949                 editor.get_selection().add (this);
2950         }
2951 }
2952
2953 void
2954 MidiRegionView::color_handler ()
2955 {
2956         RegionView::color_handler ();
2957
2958         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2959                 (*i)->set_selected ((*i)->selected()); // will change color
2960         }
2961
2962         /* XXX probably more to do here */
2963 }
2964
2965 void
2966 MidiRegionView::enable_display (bool yn)
2967 {
2968         RegionView::enable_display (yn);
2969         if (yn) {
2970                 redisplay_model ();
2971         }
2972 }