gtk2_ardour/midi_region_view.cc

   1 /*
   2     Copyright (C) 2001-2007 Paul Davis
   3     Author: Dave Robillard
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include <cmath>
  21 #include <cassert>
  22 #include <algorithm>
  23 #include <ostream>
  24
  25 #include <gtkmm.h>
  26
  27 #include <gtkmm2ext/gtk_ui.h>
  28
  29 #include <sigc++/signal.h>
  30
  31 #include "pbd/memento_command.h"
  32 #include "pbd/stateful_diff_command.h"
  33
  34 #include "ardour/playlist.h"
  35 #include "ardour/tempo.h"
  36 #include "ardour/midi_region.h"
  37 #include "ardour/midi_source.h"
  38 #include "ardour/midi_model.h"
  39 #include "ardour/midi_patch_manager.h"
  40 #include "ardour/session.h"
  41
  42 #include "evoral/Parameter.hpp"
  43 #include "evoral/Control.hpp"
  44 #include "evoral/midi_util.h"
  45
  46 #include "automation_region_view.h"
  47 #include "automation_time_axis.h"
  48 #include "canvas-hit.h"
  49 #include "canvas-note.h"
  50 #include "canvas-program-change.h"
  51 #include "ghostregion.h"
  52 #include "gui_thread.h"
  53 #include "keyboard.h"
  54 #include "midi_cut_buffer.h"
  55 #include "midi_list_editor.h"
  56 #include "midi_region_view.h"
  57 #include "midi_streamview.h"
  58 #include "midi_time_axis.h"
  59 #include "midi_time_axis.h"
  60 #include "midi_util.h"
  61 #include "public_editor.h"
  62 #include "selection.h"
  63 #include "simpleline.h"
  64 #include "streamview.h"
  65 #include "utils.h"
  66
  67 #include "i18n.h"
  68
  69 using namespace ARDOUR;
  70 using namespace PBD;
  71 using namespace Editing;
  72 using namespace ArdourCanvas;
  73 using Gtkmm2ext::Keyboard;
  74
  75 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
  76                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color const & basic_color)
  77         : RegionView (parent, tv, r, spu, basic_color)
  78         , _force_channel(-1)
  79         , _last_channel_selection(0xFFFF)
  80         , _current_range_min(0)
  81         , _current_range_max(0)
  82         , _model_name(string())
  83         , _custom_device_mode(string())
  84         , _active_notes(0)
  85         , _note_group(new ArdourCanvas::Group(*parent))
  86         , _diff_command(0)
  87         , _ghost_note(0)
  88         , _drag_rect (0)
  89         , _mouse_state(None)
  90         , _pressed_button(0)
  91         , _sort_needed (true)
  92         , _optimization_iterator (_events.end())
  93         , _list_editor (0)
  94         , no_sound_notes (false)
  95 {
  96         _note_group->raise_to_top();
  97         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
  98 }
  99
 100 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
 101                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color,
 102                 TimeAxisViewItem::Visibility visibility)
 103         : RegionView (parent, tv, r, spu, basic_color, false, visibility)
 104         , _force_channel(-1)
 105         , _last_channel_selection(0xFFFF)
 106         , _model_name(string())
 107         , _custom_device_mode(string())
 108         , _active_notes(0)
 109         , _note_group(new ArdourCanvas::Group(*parent))
 110         , _diff_command(0)
 111         , _ghost_note(0)
 112         , _drag_rect (0)
 113         , _mouse_state(None)
 114         , _pressed_button(0)
 115         , _sort_needed (true)
 116         , _optimization_iterator (_events.end())
 117         , _list_editor (0)
 118         , no_sound_notes (false)
 119 {
 120         _note_group->raise_to_top();
 121         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 122 }
 123
 124 MidiRegionView::MidiRegionView (const MidiRegionView& other)
 125         : sigc::trackable(other)
 126         , RegionView (other)
 127         , _force_channel(-1)
 128         , _last_channel_selection(0xFFFF)
 129         , _model_name(string())
 130         , _custom_device_mode(string())
 131         , _active_notes(0)
 132         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 133         , _diff_command(0)
 134         , _ghost_note(0)
 135         , _drag_rect (0)
 136         , _mouse_state(None)
 137         , _pressed_button(0)
 138         , _sort_needed (true)
 139         , _optimization_iterator (_events.end())
 140         , _list_editor (0)
 141         , no_sound_notes (false)
 142 {
 143         Gdk::Color c;
 144         int r,g,b,a;
 145
 146         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 147         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 148
 149         init (c, false);
 150 }
 151
 152 MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<MidiRegion> region)
 153         : RegionView (other, boost::shared_ptr<Region> (region))
 154         , _force_channel(-1)
 155         , _last_channel_selection(0xFFFF)
 156         , _model_name(string())
 157         , _custom_device_mode(string())
 158         , _active_notes(0)
 159         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 160         , _diff_command(0)
 161         , _ghost_note(0)
 162         , _drag_rect (0)
 163         , _mouse_state(None)
 164         , _pressed_button(0)
 165         , _sort_needed (true)
 166         , _optimization_iterator (_events.end())
 167         , _list_editor (0)
 168         , no_sound_notes (false)
 169 {
 170         Gdk::Color c;
 171         int r,g,b,a;
 172
 173         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 174         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 175
 176         init (c, true);
 177 }
 178
 179 void
 180 MidiRegionView::init (Gdk::Color const & basic_color, bool wfd)
 181 {
 182         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 183
 184         CanvasNoteEvent::CanvasNoteEventDeleted.connect (note_delete_connection, MISSING_INVALIDATOR,
 185                                                          ui_bind (&MidiRegionView::maybe_remove_deleted_note_from_selection, this, _1),
 186                                                          gui_context());
 187
 188         if (wfd) {
 189                 midi_region()->midi_source(0)->load_model();
 190         }
 191
 192         _model = midi_region()->midi_source(0)->model();
 193         _enable_display = false;
 194
 195         RegionView::init (basic_color, false);
 196
 197         compute_colors (basic_color);
 198
 199         set_height (trackview.current_height());
 200
 201         region_muted ();
 202         region_sync_changed ();
 203         region_resized (ARDOUR::bounds_change);
 204         region_locked ();
 205
 206         reset_width_dependent_items (_pixel_width);
 207
 208         set_colors ();
 209
 210         _enable_display = true;
 211         if (_model) {
 212                 if (wfd) {
 213                         display_model (_model);
 214                 }
 215         }
 216
 217         group->raise_to_top();
 218         group->signal_event().connect (sigc::mem_fun (this, &MidiRegionView::canvas_event), false);
 219
 220         midi_view()->signal_channel_mode_changed().connect(
 221                         sigc::mem_fun(this, &MidiRegionView::midi_channel_mode_changed));
 222
 223         midi_view()->signal_midi_patch_settings_changed().connect(
 224                         sigc::mem_fun(this, &MidiRegionView::midi_patch_settings_changed));
 225
 226         trackview.editor().SnapChanged.connect (snap_changed_connection, invalidator (*this), ui_bind (&MidiRegionView::snap_changed, this), gui_context ());
 227 }
 228
 229 bool
 230 MidiRegionView::canvas_event(GdkEvent* ev)
 231 {
 232         if (!trackview.editor().internal_editing()) {
 233                 return false;
 234         }
 235
 236         /* XXX: note that until version 2.30, the GnomeCanvas did not propagate scroll events
 237            to its items, which means that ev->type == GDK_SCROLL will never be seen
 238         */
 239
 240         switch (ev->type) {
 241         case GDK_SCROLL:
 242                 return scroll (&ev->scroll);
 243
 244         case GDK_KEY_PRESS:
 245                 return key_press (&ev->key);
 246
 247         case GDK_KEY_RELEASE:
 248                 return key_release (&ev->key);
 249
 250         case GDK_BUTTON_PRESS:
 251                 return button_press (&ev->button);
 252
 253         case GDK_2BUTTON_PRESS:
 254                 return true;
 255
 256         case GDK_BUTTON_RELEASE:
 257                 return button_release (&ev->button);
 258
 259         case GDK_ENTER_NOTIFY:
 260                 return enter_notify (&ev->crossing);
 261
 262         case GDK_LEAVE_NOTIFY:
 263                 return leave_notify (&ev->crossing);
 264
 265         case GDK_MOTION_NOTIFY:
 266                 return motion (&ev->motion);
 267
 268         default:
 269                 break;
 270         }
 271
 272         return false;
 273 }
 274
 275 bool
 276 MidiRegionView::enter_notify (GdkEventCrossing* ev)
 277 {
 278         /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 279
 280         Keyboard::magic_widget_grab_focus();
 281         group->grab_focus();
 282
 283         if (trackview.editor().current_mouse_mode() == MouseRange) {
 284                 create_ghost_note (ev->x, ev->y);
 285         }
 286
 287         return false;
 288 }
 289
 290 bool
 291 MidiRegionView::leave_notify (GdkEventCrossing* ev)
 292 {
 293         trackview.editor().hide_verbose_canvas_cursor ();
 294         delete _ghost_note;
 295         _ghost_note = 0;
 296         return false;
 297 }
 298
 299 bool
 300 MidiRegionView::button_press (GdkEventButton* ev)
 301 {
 302         _last_x = ev->x;
 303         _last_y = ev->y;
 304         group->w2i (_last_x, _last_y);
 305
 306         if (_mouse_state != SelectTouchDragging && ev->button == 1) {
 307                 _pressed_button = ev->button;
 308                 _mouse_state = Pressed;
 309                 return true;
 310         }
 311
 312         _pressed_button = ev->button;
 313
 314         return true;
 315 }
 316
 317 bool
 318 MidiRegionView::button_release (GdkEventButton* ev)
 319 {
 320         double event_x, event_y;
 321         nframes64_t event_frame = 0;
 322
 323         event_x = ev->x;
 324         event_y = ev->y;
 325         group->w2i(event_x, event_y);
 326         group->ungrab(ev->time);
 327         event_frame = trackview.editor().pixel_to_frame(event_x);
 328
 329         if (ev->button == 3) {
 330                 return false;
 331         } else if (_pressed_button != 1) {
 332                 return false;
 333         }
 334
 335         switch (_mouse_state) {
 336         case Pressed: // Clicked
 337                 switch (trackview.editor().current_mouse_mode()) {
 338                 case MouseObject:
 339                 case MouseTimeFX:
 340                         clear_selection();
 341                         maybe_select_by_position (ev, event_x, event_y);
 342                         break;
 343
 344                 case MouseRange:
 345                 {
 346                         bool success;
 347                         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, trackview.editor().pixel_to_frame (event_x));
 348                         if (!success) {
 349                                 beats = 1;
 350                         }
 351                         create_note_at (event_x, event_y, beats, true);
 352                         break;
 353                 }
 354                 default:
 355                         break;
 356                 }
 357                 _mouse_state = None;
 358                 break;
 359         case SelectRectDragging: // Select drag done
 360                 _mouse_state = None;
 361                 delete _drag_rect;
 362                 _drag_rect = 0;
 363                 break;
 364
 365         case AddDragging: // Add drag done
 366                 _mouse_state = None;
 367                 if (_drag_rect->property_x2() > _drag_rect->property_x1() + 2) {
 368                         const double x      = _drag_rect->property_x1();
 369                         const double length = trackview.editor().pixel_to_frame
 370                                 (_drag_rect->property_x2() - _drag_rect->property_x1());
 371
 372                         create_note_at (x, _drag_rect->property_y1(), frames_to_beats(length), false);
 373                 }
 374
 375                 delete _drag_rect;
 376                 _drag_rect = 0;
 377
 378                 create_ghost_note (ev->x, ev->y);
 379
 380         default:
 381                 break;
 382         }
 383
 384         return false;
 385 }
 386
 387 bool
 388 MidiRegionView::motion (GdkEventMotion* ev)
 389 {
 390         double event_x, event_y;
 391         nframes64_t event_frame = 0;
 392
 393         event_x = ev->x;
 394         event_y = ev->y;
 395         group->w2i(event_x, event_y);
 396
 397         // convert event_x to global frame
 398         event_frame = trackview.editor().pixel_to_frame(event_x) + _region->position();
 399         trackview.editor().snap_to(event_frame);
 400         // convert event_frame back to local coordinates relative to position
 401         event_frame -= _region->position();
 402
 403         if (_ghost_note) {
 404                 update_ghost_note (ev->x, ev->y);
 405         }
 406
 407         /* any motion immediately hides velocity text that may have been visible */
 408
 409         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 410                 (*i)->hide_velocity ();
 411         }
 412
 413         switch (_mouse_state) {
 414         case Pressed: // Maybe start a drag, if we've moved a bit
 415
 416                 if (fabs (event_x - _last_x) < 1 && fabs (event_y - _last_y) < 1) {
 417                         /* no appreciable movement since the button was pressed */
 418                         return false;
 419                 }
 420
 421                 // Select drag start
 422                 if (_pressed_button == 1 && trackview.editor().current_mouse_mode() == MouseObject) {
 423                         group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 424                                     Gdk::Cursor(Gdk::FLEUR), ev->time);
 425                         _last_x = event_x;
 426                         _last_y = event_y;
 427                         _drag_start_x = event_x;
 428                         _drag_start_y = event_y;
 429
 430                         _drag_rect = new ArdourCanvas::SimpleRect(*group);
 431                         _drag_rect->property_x1() = event_x;
 432                         _drag_rect->property_y1() = event_y;
 433                         _drag_rect->property_x2() = event_x;
 434                         _drag_rect->property_y2() = event_y;
 435                         _drag_rect->property_outline_what() = 0xFF;
 436                         _drag_rect->property_outline_color_rgba()
 437                                 = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 438                         _drag_rect->property_fill_color_rgba()
 439                                 = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 440
 441                         _mouse_state = SelectRectDragging;
 442                         return true;
 443
 444                         // Add note drag start
 445                 } else if (trackview.editor().internal_editing()) {
 446
 447                         delete _ghost_note;
 448                         _ghost_note = 0;
 449
 450                         group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 451                                     Gdk::Cursor(Gdk::FLEUR), ev->time);
 452                         _last_x = event_x;
 453                         _last_y = event_y;
 454                         _drag_start_x = event_x;
 455                         _drag_start_y = event_y;
 456
 457                         _drag_rect = new ArdourCanvas::SimpleRect(*group);
 458                         _drag_rect->property_x1() = trackview.editor().frame_to_pixel(event_frame);
 459
 460                         _drag_rect->property_y1() = midi_stream_view()->note_to_y(
 461                                 midi_stream_view()->y_to_note(event_y));
 462                         _drag_rect->property_x2() = trackview.editor().frame_to_pixel(event_frame);
 463                         _drag_rect->property_y2() = _drag_rect->property_y1()
 464                                 + floor(midi_stream_view()->note_height());
 465                         _drag_rect->property_outline_what() = 0xFF;
 466                         _drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 467                         _drag_rect->property_fill_color_rgba()    = 0xFFFFFF66;
 468
 469                         _mouse_state = AddDragging;
 470                         return true;
 471                 }
 472
 473                 return false;
 474
 475         case SelectRectDragging: // Select drag motion
 476         case AddDragging: // Add note drag motion
 477                 if (ev->is_hint) {
 478                         int t_x;
 479                         int t_y;
 480                         GdkModifierType state;
 481                         gdk_window_get_pointer(ev->window, &t_x, &t_y, &state);
 482                         event_x = t_x;
 483                         event_y = t_y;
 484                 }
 485
 486                 if (_mouse_state == AddDragging)
 487                         event_x = trackview.editor().frame_to_pixel(event_frame);
 488
 489                 if (_drag_rect) {
 490                         if (event_x > _drag_start_x)
 491                                 _drag_rect->property_x2() = event_x;
 492                         else
 493                                 _drag_rect->property_x1() = event_x;
 494                 }
 495
 496                 if (_drag_rect && _mouse_state == SelectRectDragging) {
 497                         if (event_y > _drag_start_y)
 498                                 _drag_rect->property_y2() = event_y;
 499                         else
 500                                 _drag_rect->property_y1() = event_y;
 501
 502                         update_drag_selection(_drag_start_x, event_x, _drag_start_y, event_y);
 503                 }
 504
 505                 _last_x = event_x;
 506                 _last_y = event_y;
 507
 508         case SelectTouchDragging:
 509                 return false;
 510
 511         default:
 512                 break;
 513         }
 514
 515         return false;
 516 }
 517
 518
 519 bool
 520 MidiRegionView::scroll (GdkEventScroll* ev)
 521 {
 522         if (_selection.empty()) {
 523                 return false;
 524         }
 525
 526         trackview.editor().hide_verbose_canvas_cursor ();
 527
 528         bool fine = !Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier);
 529
 530         if (ev->direction == GDK_SCROLL_UP) {
 531                 change_velocities (true, fine, false);
 532         } else if (ev->direction == GDK_SCROLL_DOWN) {
 533                 change_velocities (false, fine, false);
 534         }
 535         return true;
 536 }
 537
 538 bool
 539 MidiRegionView::key_press (GdkEventKey* ev)
 540 {
 541         /* since GTK bindings are generally activated on press, and since
 542            detectable auto-repeat is the name of the game and only sends
 543            repeated presses, carry out key actions at key press, not release.
 544         */
 545
 546         if (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R){
 547                 _mouse_state = SelectTouchDragging;
 548                 return true;
 549
 550         } else if (ev->keyval == GDK_Escape) {
 551                 clear_selection();
 552                 _mouse_state = None;
 553
 554         } else if (ev->keyval == GDK_comma || ev->keyval == GDK_period) {
 555
 556                 bool start = (ev->keyval == GDK_comma);
 557                 bool end = (ev->keyval == GDK_period);
 558                 bool shorter = Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier);
 559                 bool fine = Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 560
 561                 change_note_lengths (fine, shorter, start, end);
 562
 563                 return true;
 564
 565         } else if (ev->keyval == GDK_Delete) {
 566
 567                 delete_selection();
 568                 return true;
 569
 570         } else if (ev->keyval == GDK_Tab) {
 571
 572                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 573                         goto_previous_note ();
 574                 } else {
 575                         goto_next_note ();
 576                 }
 577                 return true;
 578
 579         } else if (ev->keyval == GDK_Up) {
 580
 581                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 582                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 583
 584                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 585                         change_velocities (true, fine, allow_smush);
 586                 } else {
 587                         transpose (true, fine, allow_smush);
 588                 }
 589                 return true;
 590
 591         } else if (ev->keyval == GDK_Down) {
 592
 593                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 594                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 595
 596                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 597                         change_velocities (false, fine, allow_smush);
 598                 } else {
 599                         transpose (false, fine, allow_smush);
 600                 }
 601                 return true;
 602
 603         } else if (ev->keyval == GDK_Left) {
 604
 605                 nudge_notes (false);
 606                 return true;
 607
 608         } else if (ev->keyval == GDK_Right) {
 609
 610                 nudge_notes (true);
 611                 return true;
 612
 613         } else if (ev->keyval == GDK_Control_L) {
 614                 return true;
 615
 616         } else if (ev->keyval == GDK_r) {
 617                 /* yes, this steals r */
 618                 if (midi_view()->midi_track()->step_editing()) {
 619                         midi_view()->step_edit_rest ();
 620                         return true;
 621                 }
 622         }
 623
 624         return false;
 625 }
 626
 627 bool
 628 MidiRegionView::key_release (GdkEventKey* ev)
 629 {
 630         if (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R) {
 631                 _mouse_state = None;
 632                 return true;
 633         }
 634         return false;
 635 }
 636
 637 void
 638 MidiRegionView::show_list_editor ()
 639 {
 640         if (!_list_editor) {
 641                 _list_editor = new MidiListEditor (trackview.session(), midi_region());
 642         }
 643         _list_editor->present ();
 644 }
 645
 646 /** Add a note to the model, and the view, at a canvas (click) coordinate.
 647  * \param x horizontal position in pixels
 648  * \param y vertical position in pixels
 649  * \param length duration of the note in beats, which will be snapped to the grid
 650  * \param sh true to make the note 1 frame shorter than the snapped version of \a length.
 651  */
 652 void
 653 MidiRegionView::create_note_at(double x, double y, double length, bool sh)
 654 {
 655         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 656         MidiStreamView* const view = mtv->midi_view();
 657
 658         double note = midi_stream_view()->y_to_note(y);
 659
 660         assert(note >= 0.0);
 661         assert(note <= 127.0);
 662
 663         // Start of note in frames relative to region start
 664         nframes64_t const start_frames = snap_frame_to_frame(trackview.editor().pixel_to_frame(x));
 665         assert(start_frames >= 0);
 666
 667         // Snap length
 668         length = frames_to_beats(
 669                         snap_frame_to_frame(start_frames + beats_to_frames(length)) - start_frames);
 670
 671         assert (length != 0);
 672
 673         if (sh) {
 674                 length = frames_to_beats (beats_to_frames (length) - 1);
 675         }
 676
 677         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
 678         int chn_cnt = 0;
 679         uint8_t channel = 0;
 680
 681         /* pick the highest selected channel, unless all channels are selected,
 682            which is interpreted to mean channel 1 (zero)
 683         */
 684
 685         for (uint16_t i = 0; i < 16; ++i) {
 686                 if (chn_mask & (1<<i)) {
 687                         channel = i;
 688                         chn_cnt++;
 689                 }
 690         }
 691
 692         if (chn_cnt == 16) {
 693                 channel = 0;
 694         }
 695
 696         const boost::shared_ptr<NoteType> new_note (new NoteType (channel,
 697                                                                   frames_to_beats(start_frames + _region->start()), length,
 698                                                                   (uint8_t)note, 0x40));
 699
 700         if (_model->contains (new_note)) {
 701                 return;
 702         }
 703
 704         view->update_note_range(new_note->note());
 705
 706         MidiModel::DiffCommand* cmd = _model->new_diff_command("add note");
 707         cmd->add(new_note);
 708         _model->apply_command(*trackview.session(), cmd);
 709
 710         play_midi_note (new_note);
 711 }
 712
 713 void
 714 MidiRegionView::clear_events()
 715 {
 716         clear_selection();
 717
 718         MidiGhostRegion* gr;
 719         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 720                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 721                         gr->clear_events();
 722                 }
 723         }
 724
 725         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 726                 delete *i;
 727         }
 728
 729         _events.clear();
 730         _pgm_changes.clear();
 731         _sys_exes.clear();
 732         _optimization_iterator = _events.end();
 733 }
 734
 735
 736 void
 737 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 738 {
 739         _model = model;
 740         content_connection.disconnect ();
 741         _model->ContentsChanged.connect (content_connection, invalidator (*this), boost::bind (&MidiRegionView::redisplay_model, this), gui_context());
 742
 743         clear_events ();
 744
 745         if (_enable_display) {
 746                 redisplay_model();
 747         }
 748 }
 749
 750 void
 751 MidiRegionView::start_diff_command(string name)
 752 {
 753         if (!_diff_command) {
 754                 _diff_command = _model->new_diff_command(name);
 755         }
 756 }
 757
 758 void
 759 MidiRegionView::diff_add_note(const boost::shared_ptr<NoteType> note, bool selected, bool show_velocity)
 760 {
 761         if (_diff_command) {
 762                 _diff_command->add(note);
 763         }
 764         if (selected) {
 765                 _marked_for_selection.insert(note);
 766         }
 767         if (show_velocity) {
 768                 _marked_for_velocity.insert(note);
 769         }
 770 }
 771
 772 void
 773 MidiRegionView::diff_remove_note(ArdourCanvas::CanvasNoteEvent* ev)
 774 {
 775         if (_diff_command && ev->note()) {
 776                 _diff_command->remove(ev->note());
 777         }
 778 }
 779
 780 void
 781 MidiRegionView::diff_add_change (ArdourCanvas::CanvasNoteEvent* ev,
 782                                  MidiModel::DiffCommand::Property property,
 783                                  uint8_t val)
 784 {
 785         if (_diff_command) {
 786                 _diff_command->change (ev->note(), property, val);
 787         }
 788 }
 789
 790 void
 791 MidiRegionView::diff_add_change (ArdourCanvas::CanvasNoteEvent* ev,
 792                                  MidiModel::DiffCommand::Property property,
 793                                  Evoral::MusicalTime val)
 794 {
 795         if (_diff_command) {
 796                 _diff_command->change (ev->note(), property, val);
 797         }
 798 }
 799
 800 void
 801 MidiRegionView::apply_diff ()
 802 {
 803         bool add_or_remove;
 804
 805         if (!_diff_command) {
 806                 return;
 807         }
 808
 809         if ((add_or_remove = _diff_command->adds_or_removes())) {
 810                 // Mark all selected notes for selection when model reloads
 811                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 812                         _marked_for_selection.insert((*i)->note());
 813                 }
 814         }
 815
 816         _model->apply_command(*trackview.session(), _diff_command);
 817         _diff_command = 0;
 818         midi_view()->midi_track()->playlist_modified();
 819
 820
 821         if (add_or_remove) {
 822                 _marked_for_selection.clear();
 823         }
 824
 825         _marked_for_velocity.clear();
 826 }
 827
 828 void
 829 MidiRegionView::apply_diff_as_subcommand()
 830 {
 831         bool add_or_remove;
 832
 833         if (!_diff_command) {
 834                 return;
 835         }
 836
 837         if ((add_or_remove = _diff_command->adds_or_removes())) {
 838                 // Mark all selected notes for selection when model reloads
 839                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 840                         _marked_for_selection.insert((*i)->note());
 841                 }
 842         }
 843
 844         _model->apply_command_as_subcommand(*trackview.session(), _diff_command);
 845         _diff_command = 0;
 846         midi_view()->midi_track()->playlist_modified();
 847
 848         if (add_or_remove) {
 849                 _marked_for_selection.clear();
 850         }
 851         _marked_for_velocity.clear();
 852 }
 853
 854
 855 void
 856 MidiRegionView::abort_command()
 857 {
 858         delete _diff_command;
 859         _diff_command = 0;
 860         clear_selection();
 861 }
 862
 863 CanvasNoteEvent*
 864 MidiRegionView::find_canvas_note (boost::shared_ptr<NoteType> note)
 865 {
 866         if (_optimization_iterator != _events.end()) {
 867                 ++_optimization_iterator;
 868         }
 869
 870         if (_optimization_iterator != _events.end() && (*_optimization_iterator)->note() == note) {
 871                 return *_optimization_iterator;
 872         }
 873
 874         for (_optimization_iterator = _events.begin(); _optimization_iterator != _events.end(); ++_optimization_iterator) {
 875                 if ((*_optimization_iterator)->note() == note) {
 876                         return *_optimization_iterator;
 877                 }
 878         }
 879
 880         return 0;
 881 }
 882
 883 void
 884 MidiRegionView::get_events (Events& e, Evoral::Sequence<Evoral::MusicalTime>::NoteOperator op, uint8_t val, int chan_mask)
 885 {
 886         MidiModel::Notes notes;
 887         _model->get_notes (notes, op, val, chan_mask);
 888
 889         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
 890                 CanvasNoteEvent* cne = find_canvas_note (*n);
 891                 if (cne) {
 892                         e.push_back (cne);
 893                 }
 894         }
 895 }
 896
 897 void
 898 MidiRegionView::redisplay_model()
 899 {
 900         // Don't redisplay the model if we're currently recording and displaying that
 901         if (_active_notes) {
 902                 return;
 903         }
 904
 905         if (!_model) {
 906                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
 907                 return;
 908         }
 909
 910         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 911                 (*i)->invalidate ();
 912         }
 913
 914         MidiModel::ReadLock lock(_model->read_lock());
 915
 916         MidiModel::Notes& notes (_model->notes());
 917         _optimization_iterator = _events.begin();
 918
 919         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
 920
 921                 boost::shared_ptr<NoteType> note (*n);
 922                 CanvasNoteEvent* cne;
 923                 bool visible;
 924
 925                 if (note_in_region_range (note, visible)) {
 926
 927                         if ((cne = find_canvas_note (note)) != 0) {
 928
 929                                 cne->validate ();
 930
 931                                 CanvasNote* cn;
 932                                 CanvasHit* ch;
 933
 934                                 if ((cn = dynamic_cast<CanvasNote*>(cne)) != 0) {
 935                                         update_note (cn);
 936                                 } else if ((ch = dynamic_cast<CanvasHit*>(cne)) != 0) {
 937                                         update_hit (ch);
 938                                 }
 939
 940                                 if (visible) {
 941                                         cne->show ();
 942                                 } else {
 943                                         cne->hide ();
 944                                 }
 945
 946                         } else {
 947
 948                                 add_note (note, visible);
 949                         }
 950
 951                 } else {
 952
 953                         if ((cne = find_canvas_note (note)) != 0) {
 954                                 cne->validate ();
 955                                 cne->hide ();
 956                         }
 957                 }
 958         }
 959
 960
 961         /* remove note items that are no longer valid */
 962
 963         for (Events::iterator i = _events.begin(); i != _events.end(); ) {
 964                 if (!(*i)->valid ()) {
 965                         delete *i;
 966                         i = _events.erase (i);
 967                 } else {
 968                         ++i;
 969                 }
 970         }
 971
 972         _pgm_changes.clear();
 973         _sys_exes.clear();
 974
 975         display_sysexes();
 976         display_program_changes();
 977
 978         _marked_for_selection.clear ();
 979         _marked_for_velocity.clear ();
 980
 981         /* we may have caused _events to contain things out of order (e.g. if a note
 982            moved earlier or later). we don't generally need them in time order, but
 983            make a note that a sort is required for those cases that require it.
 984         */
 985
 986         _sort_needed = true;
 987 }
 988
 989 void
 990 MidiRegionView::display_program_changes()
 991 {
 992         boost::shared_ptr<Evoral::Control> control = _model->control(MidiPgmChangeAutomation);
 993         if (!control) {
 994                 return;
 995         }
 996
 997         Glib::Mutex::Lock lock (control->list()->lock());
 998
 999         uint8_t channel = control->parameter().channel();
1000
1001         for (AutomationList::const_iterator event = control->list()->begin();
1002                         event != control->list()->end(); ++event) {
1003                 double event_time     = (*event)->when;
1004                 double program_number = floor((*event)->value + 0.5);
1005
1006                 // Get current value of bank select MSB at time of the program change
1007                 Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1008                 boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1009                 uint8_t msb = 0;
1010                 if (msb_control != 0) {
1011                         msb = uint8_t(floor(msb_control->get_float(true, event_time) + 0.5));
1012                 }
1013
1014                 // Get current value of bank select LSB at time of the program change
1015                 Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1016                 boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1017                 uint8_t lsb = 0;
1018                 if (lsb_control != 0) {
1019                         lsb = uint8_t(floor(lsb_control->get_float(true, event_time) + 0.5));
1020                 }
1021
1022                 MIDI::Name::PatchPrimaryKey patch_key(msb, lsb, program_number);
1023
1024                 boost::shared_ptr<MIDI::Name::Patch> patch =
1025                         MIDI::Name::MidiPatchManager::instance().find_patch(
1026                                         _model_name, _custom_device_mode, channel, patch_key);
1027
1028                 PCEvent program_change(event_time, uint8_t(program_number), channel);
1029
1030                 if (patch != 0) {
1031                         add_pgm_change(program_change, patch->name());
1032                 } else {
1033                         char buf[4];
1034                         snprintf(buf, 4, "%d", int(program_number));
1035                         add_pgm_change(program_change, buf);
1036                 }
1037         }
1038 }
1039
1040 void
1041 MidiRegionView::display_sysexes()
1042 {
1043         for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
1044                 Evoral::MusicalTime time = (*i)->time();
1045                 assert(time >= 0);
1046
1047                 ostringstream str;
1048                 str << hex;
1049                 for (uint32_t b = 0; b < (*i)->size(); ++b) {
1050                         str << int((*i)->buffer()[b]);
1051                         if (b != (*i)->size() -1) {
1052                                 str << " ";
1053                         }
1054                 }
1055                 string text = str.str();
1056
1057                 ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1058
1059                 const double x = trackview.editor().frame_to_pixel(beats_to_frames(time));
1060
1061                 double height = midi_stream_view()->contents_height();
1062
1063                 boost::shared_ptr<CanvasSysEx> sysex = boost::shared_ptr<CanvasSysEx>(
1064                                 new CanvasSysEx(*this, *group, text, height, x, 1.0));
1065
1066                 // Show unless program change is beyond the region bounds
1067                 if (time - _region->start() >= _region->length() || time < _region->start()) {
1068                         sysex->hide();
1069                 } else {
1070                         sysex->show();
1071                 }
1072
1073                 _sys_exes.push_back(sysex);
1074         }
1075 }
1076
1077
1078 MidiRegionView::~MidiRegionView ()
1079 {
1080         in_destructor = true;
1081
1082         trackview.editor().hide_verbose_canvas_cursor ();
1083
1084         note_delete_connection.disconnect ();
1085
1086         delete _list_editor;
1087
1088         RegionViewGoingAway (this); /* EMIT_SIGNAL */
1089
1090         if (_active_notes) {
1091                 end_write();
1092         }
1093
1094         _selection.clear();
1095         clear_events();
1096         delete _note_group;
1097         delete _diff_command;
1098 }
1099
1100 void
1101 MidiRegionView::region_resized (const PropertyChange& what_changed)
1102 {
1103         RegionView::region_resized(what_changed);
1104
1105         if (what_changed.contains (ARDOUR::Properties::position)) {
1106                 set_duration(_region->length(), 0);
1107                 if (_enable_display) {
1108                         redisplay_model();
1109                 }
1110         }
1111 }
1112
1113 void
1114 MidiRegionView::reset_width_dependent_items (double pixel_width)
1115 {
1116         RegionView::reset_width_dependent_items(pixel_width);
1117         assert(_pixel_width == pixel_width);
1118
1119         if (_enable_display) {
1120                 redisplay_model();
1121         }
1122 }
1123
1124 void
1125 MidiRegionView::set_height (double height)
1126 {
1127         static const double FUDGE = 2.0;
1128         const double old_height = _height;
1129         RegionView::set_height(height);
1130         _height = height - FUDGE;
1131
1132         apply_note_range(midi_stream_view()->lowest_note(),
1133                          midi_stream_view()->highest_note(),
1134                          height != old_height + FUDGE);
1135
1136         if (name_pixbuf) {
1137                 name_pixbuf->raise_to_top();
1138         }
1139 }
1140
1141
1142 /** Apply the current note range from the stream view
1143  * by repositioning/hiding notes as necessary
1144  */
1145 void
1146 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
1147 {
1148         if (!_enable_display) {
1149                 return;
1150         }
1151
1152         if (!force && _current_range_min == min && _current_range_max == max) {
1153                 return;
1154         }
1155
1156         _current_range_min = min;
1157         _current_range_max = max;
1158
1159         for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
1160                 CanvasNoteEvent* event = *i;
1161                 boost::shared_ptr<NoteType> note (event->note());
1162
1163                 if (note->note() < _current_range_min ||
1164                     note->note() > _current_range_max) {
1165                         event->hide();
1166                 } else {
1167                         event->show();
1168                 }
1169
1170                 if (CanvasNote* cnote = dynamic_cast<CanvasNote*>(event)) {
1171
1172                         const double y1 = midi_stream_view()->note_to_y(note->note());
1173                         const double y2 = y1 + floor(midi_stream_view()->note_height());
1174
1175                         cnote->property_y1() = y1;
1176                         cnote->property_y2() = y2;
1177
1178                 } else if (CanvasHit* chit = dynamic_cast<CanvasHit*>(event)) {
1179
1180                         double x = trackview.editor().frame_to_pixel(
1181                                 beats_to_frames(note->time()) - _region->start());
1182                         const double diamond_size = midi_stream_view()->note_height() / 2.0;
1183                         double y = midi_stream_view()->note_to_y(event->note()->note())
1184                                 + ((diamond_size-2.0) / 4.0);
1185
1186                         chit->set_height (diamond_size);
1187                         chit->move (x - chit->x1(), y - chit->y1());
1188                         chit->show ();
1189                 }
1190         }
1191 }
1192
1193 GhostRegion*
1194 MidiRegionView::add_ghost (TimeAxisView& tv)
1195 {
1196         CanvasNote* note;
1197
1198         double unit_position = _region->position () / samples_per_unit;
1199         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
1200         MidiGhostRegion* ghost;
1201
1202         if (mtv && mtv->midi_view()) {
1203                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group
1204                    to allow having midi notes on top of note lines and waveforms.
1205                  */
1206                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
1207         } else {
1208                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
1209         }
1210
1211         ghost->set_height ();
1212         ghost->set_duration (_region->length() / samples_per_unit);
1213         ghosts.push_back (ghost);
1214
1215         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1216                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
1217                         ghost->add_note(note);
1218                 }
1219         }
1220
1221         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&RegionView::remove_ghost, this, _1), gui_context());
1222
1223         return ghost;
1224 }
1225
1226
1227 /** Begin tracking note state for successive calls to add_event
1228  */
1229 void
1230 MidiRegionView::begin_write()
1231 {
1232         assert(!_active_notes);
1233         _active_notes = new CanvasNote*[128];
1234         for (unsigned i=0; i < 128; ++i) {
1235                 _active_notes[i] = 0;
1236         }
1237 }
1238
1239
1240 /** Destroy note state for add_event
1241  */
1242 void
1243 MidiRegionView::end_write()
1244 {
1245         delete[] _active_notes;
1246         _active_notes = 0;
1247         _marked_for_selection.clear();
1248         _marked_for_velocity.clear();
1249 }
1250
1251
1252 /** Resolve an active MIDI note (while recording).
1253  */
1254 void
1255 MidiRegionView::resolve_note(uint8_t note, double end_time)
1256 {
1257         if (midi_view()->note_mode() != Sustained) {
1258                 return;
1259         }
1260
1261         if (_active_notes && _active_notes[note]) {
1262                 const nframes64_t end_time_frames = beats_to_frames(end_time);
1263                 _active_notes[note]->property_x2() = trackview.editor().frame_to_pixel(end_time_frames);
1264                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
1265                 _active_notes[note] = 0;
1266         }
1267 }
1268
1269
1270 /** Extend active notes to rightmost edge of region (if length is changed)
1271  */
1272 void
1273 MidiRegionView::extend_active_notes()
1274 {
1275         if (!_active_notes) {
1276                 return;
1277         }
1278
1279         for (unsigned i=0; i < 128; ++i) {
1280                 if (_active_notes[i]) {
1281                         _active_notes[i]->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1282                 }
1283         }
1284 }
1285
1286 void
1287 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
1288 {
1289         if (no_sound_notes || !trackview.editor().sound_notes()) {
1290                 return;
1291         }
1292
1293         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1294         assert(route_ui);
1295
1296         route_ui->midi_track()->write_immediate_event(
1297                         note->on_event().size(), note->on_event().buffer());
1298
1299         const double note_length_beats = (note->off_event().time() - note->on_event().time());
1300         nframes_t note_length_ms = beats_to_frames(note_length_beats)
1301                         * (1000 / (double)route_ui->session()->nominal_frame_rate());
1302         Glib::signal_timeout().connect(sigc::bind(sigc::mem_fun(this, &MidiRegionView::play_midi_note_off), note),
1303                         note_length_ms, G_PRIORITY_DEFAULT);
1304 }
1305
1306 bool
1307 MidiRegionView::play_midi_note_off(boost::shared_ptr<NoteType> note)
1308 {
1309         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1310         assert(route_ui);
1311
1312         route_ui->midi_track()->write_immediate_event(
1313                         note->off_event().size(), note->off_event().buffer());
1314
1315         return false;
1316 }
1317
1318 bool
1319 MidiRegionView::note_in_region_range(const boost::shared_ptr<NoteType> note, bool& visible) const
1320 {
1321         const nframes64_t note_start_frames = beats_to_frames(note->time());
1322
1323         bool outside = (note_start_frames - _region->start() >= _region->length()) ||
1324                 (note_start_frames < _region->start());
1325
1326         visible = (note->note() >= midi_stream_view()->lowest_note()) &&
1327                 (note->note() <= midi_stream_view()->highest_note());
1328
1329         return !outside;
1330 }
1331
1332 void
1333 MidiRegionView::update_note (CanvasNote* ev)
1334 {
1335         boost::shared_ptr<NoteType> note = ev->note();
1336
1337         const nframes64_t note_start_frames = beats_to_frames(note->time());
1338
1339         /* trim note display to not overlap the end of its region */
1340         const nframes64_t note_end_frames = min (beats_to_frames (note->end_time()), _region->start() + _region->length());
1341
1342         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1343         const double y1 = midi_stream_view()->note_to_y(note->note());
1344         const double note_endpixel = trackview.editor().frame_to_pixel(note_end_frames - _region->start());
1345
1346         ev->property_x1() = x;
1347         ev->property_y1() = y1;
1348         if (note->length() > 0) {
1349                 ev->property_x2() = note_endpixel;
1350         } else {
1351                 ev->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1352         }
1353         ev->property_y2() = y1 + floor(midi_stream_view()->note_height());
1354
1355         if (note->length() == 0) {
1356                 if (_active_notes) {
1357                         assert(note->note() < 128);
1358                         // If this note is already active there's a stuck note,
1359                         // finish the old note rectangle
1360                         if (_active_notes[note->note()]) {
1361                                 CanvasNote* const old_rect = _active_notes[note->note()];
1362                                 boost::shared_ptr<NoteType> old_note = old_rect->note();
1363                                 old_rect->property_x2() = x;
1364                                 old_rect->property_outline_what() = (guint32) 0xF;
1365                         }
1366                         _active_notes[note->note()] = ev;
1367                 }
1368                 /* outline all but right edge */
1369                 ev->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
1370         } else {
1371                 /* outline all edges */
1372                 ev->property_outline_what() = (guint32) 0xF;
1373         }
1374 }
1375
1376 void
1377 MidiRegionView::update_hit (CanvasHit* ev)
1378 {
1379         boost::shared_ptr<NoteType> note = ev->note();
1380
1381         const nframes64_t note_start_frames = beats_to_frames(note->time());
1382         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1383         const double diamond_size = midi_stream_view()->note_height() / 2.0;
1384         const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
1385
1386         ev->move_to (x, y);
1387 }
1388
1389 /** Add a MIDI note to the view (with length).
1390  *
1391  * If in sustained mode, notes with length 0 will be considered active
1392  * notes, and resolve_note should be called when the corresponding note off
1393  * event arrives, to properly display the note.
1394  */
1395 void
1396 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note, bool visible)
1397 {
1398         CanvasNoteEvent* event = 0;
1399
1400         assert(note->time() >= 0);
1401         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
1402
1403         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1404
1405         if (midi_view()->note_mode() == Sustained) {
1406
1407                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
1408
1409                 update_note (ev_rect);
1410
1411                 event = ev_rect;
1412
1413                 MidiGhostRegion* gr;
1414
1415                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
1416                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
1417                                 gr->add_note(ev_rect);
1418                         }
1419                 }
1420
1421         } else if (midi_view()->note_mode() == Percussive) {
1422
1423                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
1424
1425                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
1426
1427                 update_hit (ev_diamond);
1428
1429                 event = ev_diamond;
1430
1431         } else {
1432                 event = 0;
1433         }
1434
1435         if (event) {
1436                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
1437                         note_selected(event, true);
1438                 }
1439
1440                 if (_marked_for_velocity.find(note) != _marked_for_velocity.end()) {
1441                         event->show_velocity();
1442                 }
1443                 event->on_channel_selection_change(_last_channel_selection);
1444                 _events.push_back(event);
1445
1446                 if (visible) {
1447                         event->show();
1448                 } else {
1449                         event->hide ();
1450                 }
1451         }
1452 }
1453
1454 void
1455 MidiRegionView::add_note (uint8_t channel, uint8_t number, uint8_t velocity,
1456                           Evoral::MusicalTime pos, Evoral::MusicalTime len)
1457 {
1458         boost::shared_ptr<NoteType> new_note (new NoteType (channel, pos, len, number, velocity));
1459
1460         start_diff_command (_("step add"));
1461         diff_add_note (new_note, true, false);
1462         apply_diff();
1463
1464         /* potentially extend region to hold new note */
1465
1466         nframes64_t end_frame = _region->position() + beats_to_frames (new_note->end_time());
1467         nframes64_t region_end = _region->position() + _region->length() - 1;
1468
1469         if (end_frame > region_end) {
1470                 _region->set_length (end_frame, this);
1471         } else {
1472                 redisplay_model ();
1473         }
1474 }
1475
1476 void
1477 MidiRegionView::add_pgm_change(PCEvent& program, const string& displaytext)
1478 {
1479         assert(program.time >= 0);
1480
1481         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1482         const double x = trackview.editor().frame_to_pixel(beats_to_frames(program.time));
1483
1484         double height = midi_stream_view()->contents_height();
1485
1486         boost::shared_ptr<CanvasProgramChange> pgm_change = boost::shared_ptr<CanvasProgramChange>(
1487                         new CanvasProgramChange(*this, *group,
1488                                         displaytext,
1489                                         height,
1490                                         x, 1.0,
1491                                         _model_name,
1492                                         _custom_device_mode,
1493                                         program.time, program.channel, program.value));
1494
1495         // Show unless program change is beyond the region bounds
1496         if (program.time - _region->start() >= _region->length() || program.time < _region->start()) {
1497                 pgm_change->hide();
1498         } else {
1499                 pgm_change->show();
1500         }
1501
1502         _pgm_changes.push_back(pgm_change);
1503 }
1504
1505 void
1506 MidiRegionView::get_patch_key_at(double time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1507 {
1508         cerr << "getting patch key at " << time << " for channel " << channel << endl;
1509         Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1510         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1511         float msb = -1.0;
1512         if (msb_control != 0) {
1513                 msb = int(msb_control->get_float(true, time));
1514                 cerr << "got msb " << msb;
1515         }
1516
1517         Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1518         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1519         float lsb = -1.0;
1520         if (lsb_control != 0) {
1521                 lsb = lsb_control->get_float(true, time);
1522                 cerr << " got lsb " << lsb;
1523         }
1524
1525         Evoral::Parameter program_change(MidiPgmChangeAutomation, channel, 0);
1526         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1527         float program_number = -1.0;
1528         if (program_control != 0) {
1529                 program_number = program_control->get_float(true, time);
1530                 cerr << " got program " << program_number << endl;
1531         }
1532
1533         key.msb = (int) floor(msb + 0.5);
1534         key.lsb = (int) floor(lsb + 0.5);
1535         key.program_number = (int) floor(program_number + 0.5);
1536         assert(key.is_sane());
1537 }
1538
1539
1540 void
1541 MidiRegionView::alter_program_change(PCEvent& old_program, const MIDI::Name::PatchPrimaryKey& new_patch)
1542 {
1543         // TODO: Get the real event here and alter them at the original times
1544         Evoral::Parameter bank_select_msb(MidiCCAutomation, old_program.channel, MIDI_CTL_MSB_BANK);
1545         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1546         if (msb_control != 0) {
1547                 msb_control->set_float(float(new_patch.msb), true, old_program.time);
1548         }
1549
1550         // TODO: Get the real event here and alter them at the original times
1551         Evoral::Parameter bank_select_lsb(MidiCCAutomation, old_program.channel, MIDI_CTL_LSB_BANK);
1552         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1553         if (lsb_control != 0) {
1554                 lsb_control->set_float(float(new_patch.lsb), true, old_program.time);
1555         }
1556
1557         Evoral::Parameter program_change(MidiPgmChangeAutomation, old_program.channel, 0);
1558         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1559
1560         assert(program_control != 0);
1561         program_control->set_float(float(new_patch.program_number), true, old_program.time);
1562
1563         redisplay_model();
1564 }
1565
1566 void
1567 MidiRegionView::program_selected(CanvasProgramChange& program, const MIDI::Name::PatchPrimaryKey& new_patch)
1568 {
1569         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1570         alter_program_change(program_change_event, new_patch);
1571 }
1572
1573 void
1574 MidiRegionView::previous_program(CanvasProgramChange& program)
1575 {
1576         MIDI::Name::PatchPrimaryKey key;
1577         get_patch_key_at(program.event_time(), program.channel(), key);
1578
1579         boost::shared_ptr<MIDI::Name::Patch> patch =
1580                 MIDI::Name::MidiPatchManager::instance().previous_patch(
1581                                 _model_name,
1582                                 _custom_device_mode,
1583                                 program.channel(),
1584                                 key);
1585
1586         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1587         if (patch) {
1588                 alter_program_change(program_change_event, patch->patch_primary_key());
1589         }
1590 }
1591
1592 void
1593 MidiRegionView::next_program(CanvasProgramChange& program)
1594 {
1595         MIDI::Name::PatchPrimaryKey key;
1596         get_patch_key_at(program.event_time(), program.channel(), key);
1597
1598         boost::shared_ptr<MIDI::Name::Patch> patch =
1599                 MIDI::Name::MidiPatchManager::instance().next_patch(
1600                                 _model_name,
1601                                 _custom_device_mode,
1602                                 program.channel(),
1603                                 key);
1604
1605         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1606         if (patch) {
1607                 alter_program_change(program_change_event, patch->patch_primary_key());
1608         }
1609 }
1610
1611 void
1612 MidiRegionView::maybe_remove_deleted_note_from_selection (CanvasNoteEvent* cne)
1613 {
1614         if (_selection.empty()) {
1615                 return;
1616         }
1617
1618         if (_selection.erase (cne) > 0) {
1619                 cerr << "Erased a CNE from selection\n";
1620         }
1621 }
1622
1623 void
1624 MidiRegionView::delete_selection()
1625 {
1626         if (_selection.empty()) {
1627                 return;
1628         }
1629
1630         start_diff_command (_("delete selection"));
1631
1632         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1633                 if ((*i)->selected()) {
1634                         _diff_command->remove((*i)->note());
1635                 }
1636         }
1637
1638         _selection.clear();
1639
1640         apply_diff ();
1641 }
1642
1643 void
1644 MidiRegionView::delete_note (boost::shared_ptr<NoteType> n)
1645 {
1646         start_diff_command (_("delete note"));
1647         _diff_command->remove (n);
1648         apply_diff ();
1649
1650         trackview.editor().hide_verbose_canvas_cursor ();
1651 }
1652
1653 void
1654 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1655 {
1656         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1657                 if ((*i)->selected() && (*i) != ev) {
1658                         (*i)->set_selected(false);
1659                         (*i)->hide_velocity();
1660                 }
1661         }
1662
1663         _selection.clear();
1664 }
1665
1666 void
1667 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1668 {
1669         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
1670                 if ((*i) != ev) {
1671
1672                         Selection::iterator tmp = i;
1673                         ++tmp;
1674
1675                         (*i)->set_selected (false);
1676                         _selection.erase (i);
1677
1678                         i = tmp;
1679
1680                 } else {
1681                         ++i;
1682                 }
1683         }
1684
1685         /* don't bother with removing this regionview from the editor selection,
1686            since we're about to add another note, and thus put/keep this
1687            regionview in the editor selection.
1688         */
1689
1690         if (!ev->selected()) {
1691                 add_to_selection (ev);
1692         }
1693 }
1694
1695 void
1696 MidiRegionView::select_matching_notes (uint8_t notenum, uint16_t channel_mask, bool add, bool extend)
1697 {
1698         uint8_t low_note = 127;
1699         uint8_t high_note = 0;
1700         MidiModel::Notes& notes (_model->notes());
1701         _optimization_iterator = _events.begin();
1702
1703         if (!add) {
1704                 clear_selection ();
1705         }
1706
1707         if (extend && _selection.empty()) {
1708                 extend = false;
1709         }
1710
1711         if (extend) {
1712
1713                 /* scan existing selection to get note range */
1714
1715                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1716                         if ((*i)->note()->note() < low_note) {
1717                                 low_note = (*i)->note()->note();
1718                         }
1719                         if ((*i)->note()->note() > high_note) {
1720                                 high_note = (*i)->note()->note();
1721                         }
1722                 }
1723
1724                 low_note = min (low_note, notenum);
1725                 high_note = max (high_note, notenum);
1726         }
1727
1728         no_sound_notes = true;
1729
1730         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1731
1732                 boost::shared_ptr<NoteType> note (*n);
1733                 CanvasNoteEvent* cne;
1734                 bool select = false;
1735
1736                 if (((1 << note->channel()) & channel_mask) != 0) {
1737                         if (extend) {
1738                                 if ((note->note() >= low_note && note->note() <= high_note)) {
1739                                         select = true;
1740                                 }
1741                         } else if (note->note() == notenum) {
1742                                 select = true;
1743                         }
1744                 }
1745
1746                 if (select) {
1747                         if ((cne = find_canvas_note (note)) != 0) {
1748                                 // extend is false because we've taken care of it,
1749                                 // since it extends by time range, not pitch.
1750                                 note_selected (cne, add, false);
1751                         }
1752                 }
1753
1754                 add = true; // we need to add all remaining matching notes, even if the passed in value was false (for "set")
1755
1756         }
1757
1758         no_sound_notes = false;
1759 }
1760
1761 void
1762 MidiRegionView::toggle_matching_notes (uint8_t notenum, uint16_t channel_mask)
1763 {
1764         MidiModel::Notes& notes (_model->notes());
1765         _optimization_iterator = _events.begin();
1766
1767         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1768
1769                 boost::shared_ptr<NoteType> note (*n);
1770                 CanvasNoteEvent* cne;
1771
1772                 if (note->note() == notenum && (((0x0001 << note->channel()) & channel_mask) != 0)) {
1773                         if ((cne = find_canvas_note (note)) != 0) {
1774                                 if (cne->selected()) {
1775                                         note_deselected (cne);
1776                                 } else {
1777                                         note_selected (cne, true, false);
1778                                 }
1779                         }
1780                 }
1781         }
1782 }
1783
1784 void
1785 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add, bool extend)
1786 {
1787         if (!add) {
1788                 clear_selection_except(ev);
1789         }
1790
1791         if (!extend) {
1792
1793                 if (!ev->selected()) {
1794                         add_to_selection (ev);
1795                 }
1796
1797         } else {
1798                 /* find end of latest note selected, select all between that and the start of "ev" */
1799
1800                 Evoral::MusicalTime earliest = DBL_MAX;
1801                 Evoral::MusicalTime latest = 0;
1802
1803                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1804                         if ((*i)->note()->end_time() > latest) {
1805                                 latest = (*i)->note()->end_time();
1806                         }
1807                         if ((*i)->note()->time() < earliest) {
1808                                 earliest = (*i)->note()->time();
1809                         }
1810                 }
1811
1812                 if (ev->note()->end_time() > latest) {
1813                         latest = ev->note()->end_time();
1814                 }
1815
1816                 if (ev->note()->time() < earliest) {
1817                         earliest = ev->note()->time();
1818                 }
1819
1820                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1821
1822                         /* find notes entirely within OR spanning the earliest..latest range */
1823
1824                         if (((*i)->note()->time() >= earliest && (*i)->note()->end_time() <= latest) ||
1825                             ((*i)->note()->time() <= earliest && (*i)->note()->end_time() >= latest)) {
1826                                 add_to_selection (*i);
1827                         }
1828
1829 #if 0
1830                         /* if events were guaranteed to be time sorted, we could do this.
1831                            but as of sept 10th 2009, they no longer are.
1832                         */
1833
1834                         if ((*i)->note()->time() > latest) {
1835                                 break;
1836                         }
1837 #endif
1838                 }
1839         }
1840 }
1841
1842 void
1843 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev)
1844 {
1845         remove_from_selection (ev);
1846 }
1847
1848 void
1849 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
1850 {
1851         if (x1 > x2) {
1852                 swap (x1, x2);
1853         }
1854
1855         if (y1 > y2) {
1856                 swap (y1, y2);
1857         }
1858
1859         // TODO: Make this faster by storing the last updated selection rect, and only
1860         // adjusting things that are in the area that appears/disappeared.
1861         // We probably need a tree to be able to find events in O(log(n)) time.
1862
1863         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1864
1865                 /* check if any corner of the note is inside the rect
1866
1867                    Notes:
1868                      1) this is computing "touched by", not "contained by" the rect.
1869                      2) this does not require that events be sorted in time.
1870                  */
1871
1872                 const double ix1 = (*i)->x1();
1873                 const double ix2 = (*i)->x2();
1874                 const double iy1 = (*i)->y1();
1875                 const double iy2 = (*i)->y2();
1876
1877                 if ((ix1 >= x1 && ix1 <= x2 && iy1 >= y1 && iy1 <= y2) ||
1878                     (ix1 >= x1 && ix1 <= x2 && iy2 >= y1 && iy2 <= y2) ||
1879                     (ix2 >= x1 && ix2 <= x2 && iy1 >= y1 && iy1 <= y2) ||
1880                     (ix2 >= x1 && ix2 <= x2 && iy2 >= y1 && iy2 <= y2)) {
1881
1882                         // Inside rectangle
1883                         if (!(*i)->selected()) {
1884                                 add_to_selection (*i);
1885                         }
1886                 } else if ((*i)->selected()) {
1887                         // Not inside rectangle
1888                         remove_from_selection (*i);
1889                 }
1890         }
1891 }
1892
1893 void
1894 MidiRegionView::remove_from_selection (CanvasNoteEvent* ev)
1895 {
1896         Selection::iterator i = _selection.find (ev);
1897
1898         if (i != _selection.end()) {
1899                 _selection.erase (i);
1900         }
1901
1902         ev->set_selected (false);
1903         ev->hide_velocity ();
1904
1905         if (_selection.empty()) {
1906                 PublicEditor& editor (trackview.editor());
1907                 editor.get_selection().remove (this);
1908         }
1909 }
1910
1911 void
1912 MidiRegionView::add_to_selection (CanvasNoteEvent* ev)
1913 {
1914         bool add_mrv_selection = false;
1915
1916         if (_selection.empty()) {
1917                 add_mrv_selection = true;
1918         }
1919
1920         if (_selection.insert (ev).second) {
1921                 ev->set_selected (true);
1922                 play_midi_note ((ev)->note());
1923         }
1924
1925         if (add_mrv_selection) {
1926                 PublicEditor& editor (trackview.editor());
1927                 editor.get_selection().add (this);
1928         }
1929 }
1930
1931 void
1932 MidiRegionView::move_selection(double dx, double dy)
1933 {
1934         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1935                 (*i)->move_event(dx, dy);
1936         }
1937 }
1938
1939 void
1940 MidiRegionView::note_dropped(CanvasNoteEvent *, double dt, int8_t dnote)
1941 {
1942         assert (!_selection.empty());
1943
1944         uint8_t lowest_note_in_selection  = 127;
1945         uint8_t highest_note_in_selection = 0;
1946         uint8_t highest_note_difference = 0;
1947
1948         // find highest and lowest notes first
1949
1950         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1951                 uint8_t pitch = (*i)->note()->note();
1952                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
1953                 highest_note_in_selection = std::max(highest_note_in_selection, pitch);
1954         }
1955
1956         /*
1957         cerr << "dnote: " << (int) dnote << endl;
1958         cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
1959              << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
1960         cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
1961              << int(highest_note_in_selection) << endl;
1962         cerr << "selection size: " << _selection.size() << endl;
1963         cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
1964         */
1965
1966         // Make sure the note pitch does not exceed the MIDI standard range
1967         if (highest_note_in_selection + dnote > 127) {
1968                 highest_note_difference = highest_note_in_selection - 127;
1969         }
1970
1971         start_diff_command(_("move notes"));
1972
1973         for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ++i) {
1974
1975                 nframes64_t start_frames = beats_to_frames((*i)->note()->time());
1976
1977                 if (dt >= 0) {
1978                         start_frames += snap_frame_to_frame(trackview.editor().pixel_to_frame(dt));
1979                 } else {
1980                         start_frames -= snap_frame_to_frame(trackview.editor().pixel_to_frame(-dt));
1981                 }
1982
1983                 Evoral::MusicalTime new_time = frames_to_beats(start_frames);
1984
1985                 if (new_time < 0) {
1986                         continue;
1987                 }
1988
1989                 diff_add_change (*i, MidiModel::DiffCommand::StartTime, new_time);
1990
1991                 uint8_t original_pitch = (*i)->note()->note();
1992                 uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
1993
1994                 // keep notes in standard midi range
1995                 clamp_to_0_127(new_pitch);
1996
1997                 // keep original pitch if note is dragged outside valid midi range
1998                 if ((original_pitch != 0 && new_pitch == 0)
1999                                 || (original_pitch != 127 && new_pitch == 127)) {
2000                         new_pitch = original_pitch;
2001                 }
2002
2003                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
2004                 highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
2005
2006                 diff_add_change (*i, MidiModel::DiffCommand::NoteNumber, new_pitch);
2007         }
2008
2009         apply_diff();
2010
2011         // care about notes being moved beyond the upper/lower bounds on the canvas
2012         if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
2013             highest_note_in_selection > midi_stream_view()->highest_note()) {
2014                 midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
2015         }
2016 }
2017
2018 nframes64_t
2019 MidiRegionView::snap_pixel_to_frame(double x)
2020 {
2021         PublicEditor& editor = trackview.editor();
2022         // x is region relative, convert it to global absolute frames
2023         nframes64_t frame = editor.pixel_to_frame(x) + _region->position();
2024         editor.snap_to(frame);
2025         return frame - _region->position(); // convert back to region relative
2026 }
2027
2028 nframes64_t
2029 MidiRegionView::snap_frame_to_frame(nframes64_t x)
2030 {
2031         PublicEditor& editor = trackview.editor();
2032         // x is region relative, convert it to global absolute frames
2033         nframes64_t frame = x + _region->position();
2034         editor.snap_to(frame);
2035         return frame - _region->position(); // convert back to region relative
2036 }
2037
2038 double
2039 MidiRegionView::snap_to_pixel(double x)
2040 {
2041         return (double) trackview.editor().frame_to_pixel(snap_pixel_to_frame(x));
2042 }
2043
2044 double
2045 MidiRegionView::get_position_pixels()
2046 {
2047         nframes64_t region_frame = get_position();
2048         return trackview.editor().frame_to_pixel(region_frame);
2049 }
2050
2051 double
2052 MidiRegionView::get_end_position_pixels()
2053 {
2054         nframes64_t frame = get_position() + get_duration ();
2055         return trackview.editor().frame_to_pixel(frame);
2056 }
2057
2058 nframes64_t
2059 MidiRegionView::beats_to_frames(double beats) const
2060 {
2061         return _time_converter.to(beats);
2062 }
2063
2064 double
2065 MidiRegionView::frames_to_beats(nframes64_t frames) const
2066 {
2067         return _time_converter.from(frames);
2068 }
2069
2070 void
2071 MidiRegionView::begin_resizing (bool /*at_front*/)
2072 {
2073         _resize_data.clear();
2074
2075         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2076                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
2077
2078                 // only insert CanvasNotes into the map
2079                 if (note) {
2080                         NoteResizeData *resize_data = new NoteResizeData();
2081                         resize_data->canvas_note = note;
2082
2083                         // create a new SimpleRect from the note which will be the resize preview
2084                         SimpleRect *resize_rect = new SimpleRect(
2085                                         *group, note->x1(), note->y1(), note->x2(), note->y2());
2086
2087                         // calculate the colors: get the color settings
2088                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
2089                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
2090                                         128);
2091
2092                         // make the resize preview notes more transparent and bright
2093                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
2094
2095                         // calculate color based on note velocity
2096                         resize_rect->property_fill_color_rgba() = UINT_INTERPOLATE(
2097                                 CanvasNoteEvent::meter_style_fill_color(note->note()->velocity(), note->selected()),
2098                                         fill_color,
2099                                         0.85);
2100
2101                         resize_rect->property_outline_color_rgba() = CanvasNoteEvent::calculate_outline(
2102                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
2103
2104                         resize_data->resize_rect = resize_rect;
2105                         _resize_data.push_back(resize_data);
2106                 }
2107         }
2108 }
2109
2110 /** Update resizing notes while user drags.
2111  * @param primary `primary' note for the drag; ie the one that is used as the reference in non-relative mode.
2112  * @param at_front which end of the note (true == note on, false == note off)
2113  * @param delta_x change in mouse position since the start of the drag
2114  * @param relative true if relative resizing is taking place, false if absolute resizing.  This only makes
2115  * a difference when multiple notes are being resized; in relative mode, each note's length is changed by the
2116  * amount of the drag.  In non-relative mode, all selected notes are set to have the same start or end point
2117  * as the \a primary note.
2118  */
2119 void
2120 MidiRegionView::update_resizing (ArdourCanvas::CanvasNote* primary, bool at_front, double delta_x, bool relative)
2121 {
2122         bool cursor_set = false;
2123
2124         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2125                 SimpleRect* resize_rect = (*i)->resize_rect;
2126                 CanvasNote* canvas_note = (*i)->canvas_note;
2127                 double current_x;
2128
2129                 if (at_front) {
2130                         if (relative) {
2131                                 current_x = canvas_note->x1() + delta_x;
2132                         } else {
2133                                 current_x = primary->x1() + delta_x;
2134                         }
2135                 } else {
2136                         if (relative) {
2137                                 current_x = canvas_note->x2() + delta_x;
2138                         } else {
2139                                 current_x = primary->x2() + delta_x;
2140                         }
2141                 }
2142
2143                 if (at_front) {
2144                         resize_rect->property_x1() = snap_to_pixel(current_x);
2145                         resize_rect->property_x2() = canvas_note->x2();
2146                 } else {
2147                         resize_rect->property_x2() = snap_to_pixel(current_x);
2148                         resize_rect->property_x1() = canvas_note->x1();
2149                 }
2150
2151                 if (!cursor_set) {
2152                         double beats;
2153
2154                         beats = snap_pixel_to_frame (current_x);
2155                         beats = frames_to_beats (beats);
2156
2157                         double len;
2158
2159                         if (at_front) {
2160                                 if (beats < canvas_note->note()->end_time()) {
2161                                         len = canvas_note->note()->time() - beats;
2162                                         len += canvas_note->note()->length();
2163                                 } else {
2164                                         len = 0;
2165                                 }
2166                         } else {
2167                                 if (beats >= canvas_note->note()->end_time()) {
2168                                         len = beats - canvas_note->note()->time();
2169                                 } else {
2170                                         len = 0;
2171                                 }
2172                         }
2173
2174                         char buf[16];
2175                         snprintf (buf, sizeof (buf), "%.3g beats", len);
2176                         trackview.editor().show_verbose_canvas_cursor_with (buf);
2177
2178                         cursor_set = true;
2179                 }
2180
2181         }
2182 }
2183
2184
2185 /** Finish resizing notes when the user releases the mouse button.
2186  *  Parameters the same as for \a update_resizing().
2187  */
2188 void
2189 MidiRegionView::commit_resizing (ArdourCanvas::CanvasNote* primary, bool at_front, double delta_x, bool relative)
2190 {
2191         start_diff_command(_("resize notes"));
2192
2193         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2194                 CanvasNote*  canvas_note = (*i)->canvas_note;
2195                 SimpleRect*  resize_rect = (*i)->resize_rect;
2196                 double current_x;
2197
2198                 if (at_front) {
2199                         if (relative) {
2200                                 current_x = canvas_note->x1() + delta_x;
2201                         } else {
2202                                 current_x = primary->x1() + delta_x;
2203                         }
2204                 } else {
2205                         if (relative) {
2206                                 current_x = canvas_note->x2() + delta_x;
2207                         } else {
2208                                 current_x = primary->x2() + delta_x;
2209                         }
2210                 }
2211
2212                 current_x = snap_pixel_to_frame (current_x);
2213                 current_x = frames_to_beats (current_x);
2214
2215                 if (at_front && current_x < canvas_note->note()->end_time()) {
2216                         diff_add_change (canvas_note, MidiModel::DiffCommand::StartTime, current_x);
2217
2218                         double len = canvas_note->note()->time() - current_x;
2219                         len += canvas_note->note()->length();
2220
2221                         if (len > 0) {
2222                                 /* XXX convert to beats */
2223                                 diff_add_change (canvas_note, MidiModel::DiffCommand::Length, len);
2224                         }
2225                 }
2226
2227                 if (!at_front) {
2228                         double len = current_x - canvas_note->note()->time();
2229
2230                         if (len > 0) {
2231                                 /* XXX convert to beats */
2232                                 diff_add_change (canvas_note, MidiModel::DiffCommand::Length, len);
2233                         }
2234                 }
2235
2236                 delete resize_rect;
2237                 delete (*i);
2238         }
2239
2240         _resize_data.clear();
2241         apply_diff();
2242 }
2243
2244 void
2245 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
2246 {
2247         uint8_t new_velocity;
2248
2249         if (relative) {
2250                 new_velocity = event->note()->velocity() + velocity;
2251                 clamp_to_0_127(new_velocity);
2252         } else {
2253                 new_velocity = velocity;
2254         }
2255
2256         event->set_selected (event->selected()); // change color
2257
2258         diff_add_change (event, MidiModel::DiffCommand::Velocity, new_velocity);
2259 }
2260
2261 void
2262 MidiRegionView::change_note_note (CanvasNoteEvent* event, int8_t note, bool relative)
2263 {
2264         uint8_t new_note;
2265
2266         if (relative) {
2267                 new_note = event->note()->note() + note;
2268         } else {
2269                 new_note = note;
2270         }
2271
2272         clamp_to_0_127 (new_note);
2273         diff_add_change (event, MidiModel::DiffCommand::NoteNumber, new_note);
2274 }
2275
2276 void
2277 MidiRegionView::trim_note (CanvasNoteEvent* event, Evoral::MusicalTime front_delta, Evoral::MusicalTime end_delta)
2278 {
2279         bool change_start = false;
2280         bool change_length = false;
2281         Evoral::MusicalTime new_start = 0;
2282         Evoral::MusicalTime new_length = 0;
2283
2284         /* NOTE: the semantics of the two delta arguments are slightly subtle:
2285
2286            front_delta: if positive - move the start of the note later in time (shortening it)
2287                         if negative - move the start of the note earlier in time (lengthening it)
2288
2289            end_delta:   if positive - move the end of the note later in time (lengthening it)
2290                         if negative - move the end of the note earlier in time (shortening it)
2291          */
2292
2293         if (front_delta) {
2294                 if (front_delta < 0) {
2295
2296                         if (event->note()->time() < -front_delta) {
2297                                 new_start = 0;
2298                         } else {
2299                                 new_start = event->note()->time() + front_delta; // moves earlier
2300                         }
2301
2302                         /* start moved toward zero, so move the end point out to where it used to be.
2303                            Note that front_delta is negative, so this increases the length.
2304                         */
2305
2306                         new_length = event->note()->length() - front_delta;
2307                         change_start = true;
2308                         change_length = true;
2309
2310                 } else {
2311
2312                         Evoral::MusicalTime new_pos = event->note()->time() + front_delta;
2313
2314                         if (new_pos < event->note()->end_time()) {
2315                                 new_start = event->note()->time() + front_delta;
2316                                 /* start moved toward the end, so move the end point back to where it used to be */
2317                                 new_length = event->note()->length() - front_delta;
2318                                 change_start = true;
2319                                 change_length = true;
2320                         }
2321                 }
2322
2323         }
2324
2325         if (end_delta) {
2326                 bool can_change = true;
2327                 if (end_delta < 0) {
2328                         if (event->note()->length() < -end_delta) {
2329                                 can_change = false;
2330                         }
2331                 }
2332
2333                 if (can_change) {
2334                         new_length = event->note()->length() + end_delta;
2335                         change_length = true;
2336                 }
2337         }
2338
2339         if (change_start) {
2340                 diff_add_change (event, MidiModel::DiffCommand::StartTime, new_start);
2341         }
2342
2343         if (change_length) {
2344                 diff_add_change (event, MidiModel::DiffCommand::Length, new_length);
2345         }
2346 }
2347
2348 void
2349 MidiRegionView::change_note_time (CanvasNoteEvent* event, Evoral::MusicalTime delta, bool relative)
2350 {
2351         Evoral::MusicalTime new_time;
2352
2353         if (relative) {
2354                 if (delta < 0.0) {
2355                         if (event->note()->time() < -delta) {
2356                                 new_time = 0;
2357                         } else {
2358                                 new_time = event->note()->time() + delta;
2359                         }
2360                 } else {
2361                         new_time = event->note()->time() + delta;
2362                 }
2363         } else {
2364                 new_time = delta;
2365         }
2366
2367         diff_add_change (event, MidiModel::DiffCommand::StartTime, new_time);
2368 }
2369
2370 void
2371 MidiRegionView::change_velocities (bool up, bool fine, bool allow_smush)
2372 {
2373         int8_t delta;
2374
2375         if (_selection.empty()) {
2376                 return;
2377         }
2378
2379         if (fine) {
2380                 delta = 1;
2381         } else {
2382                 delta = 10;
2383         }
2384
2385         if (!up) {
2386                 delta = -delta;
2387         }
2388
2389         if (!allow_smush) {
2390                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2391                         if ((*i)->note()->velocity() + delta == 0 || (*i)->note()->velocity() + delta == 127) {
2392                                 return;
2393                         }
2394                 }
2395         }
2396
2397         start_diff_command(_("change velocities"));
2398
2399         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
2400                 Selection::iterator next = i;
2401                 ++next;
2402                 change_note_velocity (*i, delta, true);
2403                 i = next;
2404         }
2405
2406         apply_diff();
2407
2408         if (!_selection.empty()) {
2409                 char buf[24];
2410                 snprintf (buf, sizeof (buf), "Vel %d",
2411                           (int) (*_selection.begin())->note()->velocity());
2412                 trackview.editor().show_verbose_canvas_cursor_with (buf);
2413         }
2414 }
2415
2416
2417 void
2418 MidiRegionView::transpose (bool up, bool fine, bool allow_smush)
2419 {
2420         if (_selection.empty()) {
2421                 return;
2422         }
2423
2424         int8_t delta;
2425
2426         if (fine) {
2427                 delta = 1;
2428         } else {
2429                 delta = 12;
2430         }
2431
2432         if (!up) {
2433                 delta = -delta;
2434         }
2435
2436         if (!allow_smush) {
2437                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2438                         if (!up) {
2439                                 if ((int8_t) (*i)->note()->note() + delta <= 0) {
2440                                         return;
2441                                 }
2442                         } else {
2443                                 if ((int8_t) (*i)->note()->note() + delta > 127) {
2444                                         return;
2445                                 }
2446                         }
2447                 }
2448         }
2449
2450         start_diff_command (_("transpose"));
2451
2452         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2453                 Selection::iterator next = i;
2454                 ++next;
2455                 change_note_note (*i, delta, true);
2456                 i = next;
2457         }
2458
2459         apply_diff ();
2460 }
2461
2462 void
2463 MidiRegionView::change_note_lengths (bool fine, bool shorter, bool start, bool end)
2464 {
2465         Evoral::MusicalTime delta;
2466
2467         if (fine) {
2468                 delta = 1.0/128.0;
2469         } else {
2470                 /* grab the current grid distance */
2471                 bool success;
2472                 delta = trackview.editor().get_grid_type_as_beats (success, _region->position());
2473                 if (!success) {
2474                         /* XXX cannot get grid type as beats ... should always be possible ... FIX ME */
2475                         cerr << "Grid type not available as beats - TO BE FIXED\n";
2476                         return;
2477                 }
2478         }
2479
2480         if (shorter) {
2481                 delta = -delta;
2482         }
2483
2484         start_diff_command (_("change note lengths"));
2485
2486         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2487                 Selection::iterator next = i;
2488                 ++next;
2489
2490                 /* note the negation of the delta for start */
2491
2492                 trim_note (*i, (start ? -delta : 0), (end ? delta : 0));
2493                 i = next;
2494         }
2495
2496         apply_diff ();
2497
2498 }
2499
2500 void
2501 MidiRegionView::nudge_notes (bool forward)
2502 {
2503         if (_selection.empty()) {
2504                 return;
2505         }
2506
2507         /* pick a note as the point along the timeline to get the nudge distance.
2508            its not necessarily the earliest note, so we may want to pull the notes out
2509            into a vector and sort before using the first one.
2510         */
2511
2512         nframes64_t ref_point = _region->position() + beats_to_frames ((*(_selection.begin()))->note()->time());
2513         nframes64_t unused;
2514         nframes64_t distance;
2515
2516         if (trackview.editor().snap_mode() == Editing::SnapOff) {
2517
2518                 /* grid is off - use nudge distance */
2519
2520                 distance = trackview.editor().get_nudge_distance (ref_point, unused);
2521
2522         } else {
2523
2524                 /* use grid */
2525
2526                 nframes64_t next_pos = ref_point;
2527
2528                 if (forward) {
2529                         /* XXX need check on max_frames, but that needs max_frames64 or something */
2530                         next_pos += 1;
2531                 } else {
2532                         if (next_pos == 0) {
2533                                 return;
2534                         }
2535                         next_pos -= 1;
2536                 }
2537
2538                 trackview.editor().snap_to (next_pos, (forward ? 1 : -1), false);
2539                 distance = ref_point - next_pos;
2540         }
2541
2542         if (distance == 0) {
2543                 return;
2544         }
2545
2546         Evoral::MusicalTime delta = frames_to_beats (fabs (distance));
2547
2548         if (!forward) {
2549                 delta = -delta;
2550         }
2551
2552         start_diff_command (_("nudge"));
2553
2554         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2555                 Selection::iterator next = i;
2556                 ++next;
2557                 change_note_time (*i, delta, true);
2558                 i = next;
2559         }
2560
2561         apply_diff ();
2562 }
2563
2564 void
2565 MidiRegionView::change_channel(uint8_t channel)
2566 {
2567         start_diff_command(_("change channel"));
2568         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2569                 diff_add_change (*i, MidiModel::DiffCommand::Channel, channel);
2570         }
2571
2572         apply_diff();
2573 }
2574
2575
2576 void
2577 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
2578 {
2579         if (_mouse_state == SelectTouchDragging) {
2580                 note_selected (ev, true);
2581         }
2582
2583         show_verbose_canvas_cursor (ev->note ());
2584 }
2585
2586 void
2587 MidiRegionView::note_left (ArdourCanvas::CanvasNoteEvent* note)
2588 {
2589         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2590                 (*i)->hide_velocity ();
2591         }
2592
2593         trackview.editor().hide_verbose_canvas_cursor ();
2594 }
2595
2596 void
2597 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
2598 {
2599         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
2600         if (msrc)
2601                 display_model(msrc->model());
2602 }
2603
2604 void
2605 MidiRegionView::set_frame_color()
2606 {
2607         if (frame) {
2608                 if (_selected && should_show_selection) {
2609                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
2610                 } else {
2611                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
2612                 }
2613         }
2614 }
2615
2616 void
2617 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
2618 {
2619         switch (mode) {
2620         case AllChannels:
2621         case FilterChannels:
2622                 _force_channel = -1;
2623                 break;
2624         case ForceChannel:
2625                 _force_channel = mask;
2626                 mask = 0xFFFF; // Show all notes as active (below)
2627         };
2628
2629         // Update notes for selection
2630         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2631                 (*i)->on_channel_selection_change(mask);
2632         }
2633
2634         _last_channel_selection = mask;
2635 }
2636
2637 void
2638 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
2639 {
2640         _model_name         = model;
2641         _custom_device_mode = custom_device_mode;
2642         redisplay_model();
2643 }
2644
2645 void
2646 MidiRegionView::cut_copy_clear (Editing::CutCopyOp op)
2647 {
2648         if (_selection.empty()) {
2649                 return;
2650         }
2651
2652         PublicEditor& editor (trackview.editor());
2653
2654         switch (op) {
2655         case Cut:
2656         case Copy:
2657                 editor.get_cut_buffer().add (selection_as_cut_buffer());
2658                 break;
2659         default:
2660                 break;
2661         }
2662
2663         if (op != Copy) {
2664
2665                 start_diff_command();
2666
2667                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2668                         switch (op) {
2669                         case Copy:
2670                                 break;
2671                         case Cut:
2672                         case Clear:
2673                                 diff_remove_note (*i);
2674                                 break;
2675                         }
2676                 }
2677
2678                 apply_diff();
2679         }
2680 }
2681
2682 MidiCutBuffer*
2683 MidiRegionView::selection_as_cut_buffer () const
2684 {
2685         Notes notes;
2686
2687         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2688                 NoteType* n = (*i)->note().get();
2689                 notes.insert (boost::shared_ptr<NoteType> (new NoteType (*n)));
2690         }
2691
2692         MidiCutBuffer* cb = new MidiCutBuffer (trackview.session());
2693         cb->set (notes);
2694
2695         return cb;
2696 }
2697
2698 void
2699 MidiRegionView::paste (nframes64_t pos, float times, const MidiCutBuffer& mcb)
2700 {
2701         if (mcb.empty()) {
2702                 return;
2703         }
2704
2705         start_diff_command (_("paste"));
2706
2707         Evoral::MusicalTime beat_delta;
2708         Evoral::MusicalTime paste_pos_beats;
2709         Evoral::MusicalTime duration;
2710         Evoral::MusicalTime end_point = 0;
2711
2712         duration = (*mcb.notes().rbegin())->end_time() - (*mcb.notes().begin())->time();
2713         paste_pos_beats = frames_to_beats (pos - _region->position());
2714         beat_delta = (*mcb.notes().begin())->time() - paste_pos_beats;
2715         paste_pos_beats = 0;
2716
2717         _selection.clear ();
2718
2719         for (int n = 0; n < (int) times; ++n) {
2720
2721                 for (Notes::const_iterator i = mcb.notes().begin(); i != mcb.notes().end(); ++i) {
2722
2723                         boost::shared_ptr<NoteType> copied_note (new NoteType (*((*i).get())));
2724                         copied_note->set_time (paste_pos_beats + copied_note->time() - beat_delta);
2725
2726                         /* make all newly added notes selected */
2727
2728                         diff_add_note (copied_note, true);
2729                         end_point = copied_note->end_time();
2730                 }
2731
2732                 paste_pos_beats += duration;
2733         }
2734
2735         /* if we pasted past the current end of the region, extend the region */
2736
2737         nframes64_t end_frame = _region->position() + beats_to_frames (end_point);
2738         nframes64_t region_end = _region->position() + _region->length() - 1;
2739
2740         if (end_frame > region_end) {
2741
2742                 trackview.session()->begin_reversible_command (_("paste"));
2743
2744                 _region->clear_history ();
2745                 _region->set_length (end_frame, this);
2746                 trackview.session()->add_command (new StatefulDiffCommand (_region));
2747         }
2748
2749         apply_diff ();
2750 }
2751
2752 struct EventNoteTimeEarlyFirstComparator {
2753     bool operator() (CanvasNoteEvent* a, CanvasNoteEvent* b) {
2754             return a->note()->time() < b->note()->time();
2755     }
2756 };
2757
2758 void
2759 MidiRegionView::time_sort_events ()
2760 {
2761         if (!_sort_needed) {
2762                 return;
2763         }
2764
2765         EventNoteTimeEarlyFirstComparator cmp;
2766         _events.sort (cmp);
2767
2768         _sort_needed = false;
2769 }
2770
2771 void
2772 MidiRegionView::goto_next_note ()
2773 {
2774         // nframes64_t pos = -1;
2775         bool use_next = false;
2776
2777         if (_events.back()->selected()) {
2778                 return;
2779         }
2780
2781         time_sort_events ();
2782
2783         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2784                 if ((*i)->selected()) {
2785                         use_next = true;
2786                         continue;
2787                 } else if (use_next) {
2788                         unique_select (*i);
2789                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
2790                         return;
2791                 }
2792         }
2793
2794         /* use the first one */
2795
2796         unique_select (_events.front());
2797
2798 }
2799
2800 void
2801 MidiRegionView::goto_previous_note ()
2802 {
2803         // nframes64_t pos = -1;
2804         bool use_next = false;
2805
2806         if (_events.front()->selected()) {
2807                 return;
2808         }
2809
2810         time_sort_events ();
2811
2812         for (Events::reverse_iterator i = _events.rbegin(); i != _events.rend(); ++i) {
2813                 if ((*i)->selected()) {
2814                         use_next = true;
2815                         continue;
2816                 } else if (use_next) {
2817                         unique_select (*i);
2818                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
2819                         return;
2820                 }
2821         }
2822
2823         /* use the last one */
2824
2825         unique_select (*(_events.rbegin()));
2826 }
2827
2828 void
2829 MidiRegionView::selection_as_notelist (Notes& selected, bool allow_all_if_none_selected)
2830 {
2831         bool had_selected = false;
2832
2833         time_sort_events ();
2834
2835         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2836                 if ((*i)->selected()) {
2837                         selected.insert ((*i)->note());
2838                         had_selected = true;
2839                 }
2840         }
2841
2842         if (allow_all_if_none_selected && !had_selected) {
2843                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2844                         selected.insert ((*i)->note());
2845                 }
2846         }
2847 }
2848
2849 void
2850 MidiRegionView::update_ghost_note (double x, double y)
2851 {
2852         _last_ghost_x = x;
2853         _last_ghost_y = y;
2854
2855         group->w2i (x, y);
2856         nframes64_t f = trackview.editor().pixel_to_frame (x) + _region->position ();
2857         trackview.editor().snap_to (f);
2858         f -= _region->position ();
2859
2860         bool success;
2861         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, f);
2862         if (!success) {
2863                 beats = 1;
2864         }
2865
2866         double length = frames_to_beats (snap_frame_to_frame (f + beats_to_frames (beats)) - f);
2867
2868         _ghost_note->note()->set_time (frames_to_beats (f + _region->start()));
2869         _ghost_note->note()->set_length (length);
2870         _ghost_note->note()->set_note (midi_stream_view()->y_to_note (y));
2871
2872         update_note (_ghost_note);
2873
2874         show_verbose_canvas_cursor (_ghost_note->note ());
2875 }
2876
2877 void
2878 MidiRegionView::create_ghost_note (double x, double y)
2879 {
2880         delete _ghost_note;
2881         _ghost_note = 0;
2882
2883         boost::shared_ptr<NoteType> g (new NoteType);
2884         _ghost_note = new NoEventCanvasNote (*this, *group, g);
2885         update_ghost_note (x, y);
2886         _ghost_note->show ();
2887
2888         _last_ghost_x = x;
2889         _last_ghost_y = y;
2890
2891         show_verbose_canvas_cursor (_ghost_note->note ());
2892 }
2893
2894 void
2895 MidiRegionView::snap_changed ()
2896 {
2897         if (!_ghost_note) {
2898                 return;
2899         }
2900
2901         create_ghost_note (_last_ghost_x, _last_ghost_y);
2902 }
2903
2904 void
2905 MidiRegionView::show_verbose_canvas_cursor (boost::shared_ptr<NoteType> n) const
2906 {
2907         char buf[24];
2908         snprintf (buf, sizeof (buf), "%s (%d)\nVel %d",
2909                   Evoral::midi_note_name (n->note()).c_str(),
2910                   (int) n->note (),
2911                   (int) n->velocity());
2912         trackview.editor().show_verbose_canvas_cursor_with (buf);
2913 }
2914
2915 void
2916 MidiRegionView::drop_down_keys ()
2917 {
2918         _mouse_state = None;
2919 }
2920
2921 void
2922 MidiRegionView::maybe_select_by_position (GdkEventButton* ev, double x, double y)
2923 {
2924         double note = midi_stream_view()->y_to_note(y);
2925         Events e;
2926         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
2927
2928         cerr << "Selecting by position\n";
2929
2930         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
2931
2932         if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
2933                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchGreaterThanOrEqual, (uint8_t) floor (note), chn_mask);
2934         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
2935                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchLessThanOrEqual, (uint8_t) floor (note), chn_mask);
2936         } else {
2937                 return;
2938         }
2939
2940         bool add_mrv_selection = false;
2941
2942         if (_selection.empty()) {
2943                 add_mrv_selection = true;
2944         }
2945
2946         for (Events::iterator i = e.begin(); i != e.end(); ++i) {
2947                 if (_selection.insert (*i).second) {
2948                         (*i)->set_selected (true);
2949                 }
2950         }
2951
2952         if (add_mrv_selection) {
2953                 PublicEditor& editor (trackview.editor());
2954                 editor.get_selection().add (this);
2955         }
2956 }
2957
2958 void
2959 MidiRegionView::color_handler ()
2960 {
2961         RegionView::color_handler ();
2962
2963         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2964                 (*i)->set_selected ((*i)->selected()); // will change color
2965         }
2966
2967         /* XXX probably more to do here */
2968 }
2969
2970 void
2971 MidiRegionView::enable_display (bool yn)
2972 {
2973         RegionView::enable_display (yn);
2974         if (yn) {
2975                 redisplay_model ();
2976         }
2977 }