gtk2_ardour/midi_region_view.cc

   1 /*
   2     Copyright (C) 2001-2011 Paul Davis
   3     Author: David 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/MIDIParameters.hpp"
  44 #include "evoral/Control.hpp"
  45 #include "evoral/midi_util.h"
  46
  47 #include "automation_region_view.h"
  48 #include "automation_time_axis.h"
  49 #include "canvas-hit.h"
  50 #include "canvas-note.h"
  51 #include "canvas_patch_change.h"
  52 #include "debug.h"
  53 #include "editor.h"
  54 #include "ghostregion.h"
  55 #include "gui_thread.h"
  56 #include "keyboard.h"
  57 #include "midi_channel_dialog.h"
  58 #include "midi_cut_buffer.h"
  59 #include "midi_list_editor.h"
  60 #include "midi_region_view.h"
  61 #include "midi_streamview.h"
  62 #include "midi_time_axis.h"
  63 #include "midi_util.h"
  64 #include "note_player.h"
  65 #include "public_editor.h"
  66 #include "rgb_macros.h"
  67 #include "selection.h"
  68 #include "simpleline.h"
  69 #include "streamview.h"
  70 #include "utils.h"
  71 #include "mouse_cursors.h"
  72 #include "patch_change_dialog.h"
  73 #include "verbose_cursor.h"
  74
  75 #include "i18n.h"
  76
  77 using namespace ARDOUR;
  78 using namespace PBD;
  79 using namespace Editing;
  80 using namespace ArdourCanvas;
  81 using Gtkmm2ext::Keyboard;
  82
  83 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
  84                                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color const & basic_color)
  85         : RegionView (parent, tv, r, spu, basic_color)
  86         , _force_channel(-1)
  87         , _last_channel_selection(0xFFFF)
  88         , _current_range_min(0)
  89         , _current_range_max(0)
  90         , _model_name(string())
  91         , _custom_device_mode(string())
  92         , _active_notes(0)
  93         , _note_group(new ArdourCanvas::Group(*group))
  94         , _note_diff_command (0)
  95         , _ghost_note(0)
  96         , _drag_rect (0)
  97         , _step_edit_cursor (0)
  98         , _step_edit_cursor_width (1.0)
  99         , _step_edit_cursor_position (0.0)
 100         , _channel_selection_scoped_note (0)
 101         , _temporary_note_group (0)
 102         , _mouse_state(None)
 103         , _pressed_button(0)
 104         , _sort_needed (true)
 105         , _optimization_iterator (_events.end())
 106         , _list_editor (0)
 107         , _no_sound_notes (false)
 108         , _last_event_x (0)
 109         , _last_event_y (0)
 110         , _pre_enter_cursor (0)
 111 {
 112         _note_group->raise_to_top();
 113         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 114
 115         connect_to_diskstream ();
 116 }
 117
 118 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
 119                                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color,
 120                                 TimeAxisViewItem::Visibility visibility)
 121         : RegionView (parent, tv, r, spu, basic_color, false, visibility)
 122         , _force_channel(-1)
 123         , _last_channel_selection(0xFFFF)
 124         , _model_name(string())
 125         , _custom_device_mode(string())
 126         , _active_notes(0)
 127         , _note_group(new ArdourCanvas::Group(*parent))
 128         , _note_diff_command (0)
 129         , _ghost_note(0)
 130         , _drag_rect (0)
 131         , _step_edit_cursor (0)
 132         , _step_edit_cursor_width (1.0)
 133         , _step_edit_cursor_position (0.0)
 134         , _channel_selection_scoped_note (0)
 135         , _temporary_note_group (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         , _last_event_x (0)
 143         , _last_event_y (0)
 144 {
 145         _note_group->raise_to_top();
 146         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 147
 148         connect_to_diskstream ();
 149 }
 150
 151 MidiRegionView::MidiRegionView (const MidiRegionView& other)
 152         : sigc::trackable(other)
 153         , RegionView (other)
 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         , _note_diff_command (0)
 161         , _ghost_note(0)
 162         , _drag_rect (0)
 163         , _step_edit_cursor (0)
 164         , _step_edit_cursor_width (1.0)
 165         , _step_edit_cursor_position (0.0)
 166         , _channel_selection_scoped_note (0)
 167         , _temporary_note_group (0)
 168         , _mouse_state(None)
 169         , _pressed_button(0)
 170         , _sort_needed (true)
 171         , _optimization_iterator (_events.end())
 172         , _list_editor (0)
 173         , _no_sound_notes (false)
 174         , _last_event_x (0)
 175         , _last_event_y (0)
 176 {
 177         Gdk::Color c;
 178         int r,g,b,a;
 179
 180         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 181         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 182
 183         init (c, false);
 184 }
 185
 186 MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<MidiRegion> region)
 187         : RegionView (other, boost::shared_ptr<Region> (region))
 188         , _force_channel(-1)
 189         , _last_channel_selection(0xFFFF)
 190         , _model_name(string())
 191         , _custom_device_mode(string())
 192         , _active_notes(0)
 193         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 194         , _note_diff_command (0)
 195         , _ghost_note(0)
 196         , _drag_rect (0)
 197         , _step_edit_cursor (0)
 198         , _step_edit_cursor_width (1.0)
 199         , _step_edit_cursor_position (0.0)
 200         , _channel_selection_scoped_note (0)
 201         , _temporary_note_group (0)
 202         , _mouse_state(None)
 203         , _pressed_button(0)
 204         , _sort_needed (true)
 205         , _optimization_iterator (_events.end())
 206         , _list_editor (0)
 207         , _no_sound_notes (false)
 208         , _last_event_x (0)
 209         , _last_event_y (0)
 210 {
 211         Gdk::Color c;
 212         int r,g,b,a;
 213
 214         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 215         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 216
 217         init (c, true);
 218 }
 219
 220 void
 221 MidiRegionView::init (Gdk::Color const & basic_color, bool wfd)
 222 {
 223         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 224
 225         CanvasNoteEvent::CanvasNoteEventDeleted.connect (note_delete_connection, MISSING_INVALIDATOR,
 226                                                          ui_bind (&MidiRegionView::maybe_remove_deleted_note_from_selection, this, _1),
 227                                                          gui_context());
 228
 229         if (wfd) {
 230                 midi_region()->midi_source(0)->load_model();
 231         }
 232
 233         _model = midi_region()->midi_source(0)->model();
 234         _enable_display = false;
 235
 236         RegionView::init (basic_color, false);
 237
 238         compute_colors (basic_color);
 239
 240         set_height (trackview.current_height());
 241
 242         region_muted ();
 243         region_sync_changed ();
 244         region_resized (ARDOUR::bounds_change);
 245         region_locked ();
 246
 247         reset_width_dependent_items (_pixel_width);
 248
 249         set_colors ();
 250
 251         _enable_display = true;
 252         if (_model) {
 253                 if (wfd) {
 254                         display_model (_model);
 255                 }
 256         }
 257
 258         group->raise_to_top();
 259         group->signal_event().connect(
 260                 sigc::mem_fun(this, &MidiRegionView::canvas_event), false);
 261
 262         midi_view()->signal_channel_mode_changed().connect(
 263                 sigc::mem_fun(this, &MidiRegionView::midi_channel_mode_changed));
 264
 265         midi_view()->signal_midi_patch_settings_changed().connect(
 266                 sigc::mem_fun(this, &MidiRegionView::midi_patch_settings_changed));
 267
 268         trackview.editor().SnapChanged.connect(snap_changed_connection, invalidator(*this),
 269                                                ui_bind(&MidiRegionView::snap_changed, this),
 270                                                gui_context());
 271
 272         connect_to_diskstream ();
 273 }
 274
 275 void
 276 MidiRegionView::connect_to_diskstream ()
 277 {
 278         midi_view()->midi_track()->DataRecorded.connect(
 279                 *this, invalidator(*this),
 280                 ui_bind(&MidiRegionView::data_recorded, this, _1, _2),
 281                 gui_context());
 282 }
 283
 284 bool
 285 MidiRegionView::canvas_event(GdkEvent* ev)
 286 {
 287         switch (ev->type) {
 288         case GDK_ENTER_NOTIFY:
 289         case GDK_LEAVE_NOTIFY:
 290                 _last_event_x = ev->crossing.x;
 291                 _last_event_y = ev->crossing.y;
 292                 break;
 293         case GDK_MOTION_NOTIFY:
 294                 _last_event_x = ev->motion.x;
 295                 _last_event_y = ev->motion.y;
 296                 break;
 297         default:
 298                 break;
 299         }
 300
 301         if (!trackview.editor().internal_editing()) {
 302                 return false;
 303         }
 304
 305         switch (ev->type) {
 306         case GDK_SCROLL:
 307                 return scroll (&ev->scroll);
 308
 309         case GDK_KEY_PRESS:
 310                 return key_press (&ev->key);
 311
 312         case GDK_KEY_RELEASE:
 313                 return key_release (&ev->key);
 314
 315         case GDK_BUTTON_PRESS:
 316                 return button_press (&ev->button);
 317
 318         case GDK_2BUTTON_PRESS:
 319                 return true;
 320
 321         case GDK_BUTTON_RELEASE:
 322                 return button_release (&ev->button);
 323
 324         case GDK_ENTER_NOTIFY:
 325                 return enter_notify (&ev->crossing);
 326
 327         case GDK_LEAVE_NOTIFY:
 328                 return leave_notify (&ev->crossing);
 329
 330         case GDK_MOTION_NOTIFY:
 331                 return motion (&ev->motion);
 332
 333         default:
 334                 break;
 335         }
 336
 337         return false;
 338 }
 339
 340 void
 341 MidiRegionView::remove_ghost_note ()
 342 {
 343         delete _ghost_note;
 344         _ghost_note = 0;
 345 }
 346
 347 bool
 348 MidiRegionView::enter_notify (GdkEventCrossing* ev)
 349 {
 350         trackview.editor().MouseModeChanged.connect (
 351                 _mouse_mode_connection, invalidator (*this), ui_bind (&MidiRegionView::mouse_mode_changed, this), gui_context ()
 352                                                      );
 353
 354         Keyboard::magic_widget_grab_focus();
 355         group->grab_focus();
 356
 357         if (trackview.editor().current_mouse_mode() == MouseRange) {
 358                 create_ghost_note (ev->x, ev->y);
 359         }
 360
 361         return false;
 362 }
 363
 364 bool
 365 MidiRegionView::leave_notify (GdkEventCrossing*)
 366 {
 367         _mouse_mode_connection.disconnect ();
 368
 369         trackview.editor().verbose_cursor()->hide ();
 370         remove_ghost_note ();
 371         return false;
 372 }
 373
 374 void
 375 MidiRegionView::mouse_mode_changed ()
 376 {
 377         if (trackview.editor().current_mouse_mode() == MouseRange && trackview.editor().internal_editing()) {
 378                 create_ghost_note (_last_event_x, _last_event_y);
 379         } else {
 380                 remove_ghost_note ();
 381                 trackview.editor().verbose_cursor()->hide ();
 382         }
 383 }
 384
 385 bool
 386 MidiRegionView::button_press (GdkEventButton* ev)
 387 {
 388         if (ev->button != 1) {
 389                 return false;
 390         }
 391
 392         _last_x = ev->x;
 393         _last_y = ev->y;
 394
 395         group->w2i (_last_x, _last_y);
 396
 397         if (_mouse_state != SelectTouchDragging) {
 398
 399                 _pressed_button = ev->button;
 400                 _mouse_state = Pressed;
 401
 402                 return true;
 403         }
 404
 405         _pressed_button = ev->button;
 406
 407         return true;
 408 }
 409
 410 bool
 411 MidiRegionView::button_release (GdkEventButton* ev)
 412 {
 413         double event_x, event_y;
 414
 415         if (ev->button != 1) {
 416                 return false;
 417         }
 418
 419         event_x = ev->x;
 420         event_y = ev->y;
 421
 422         group->w2i(event_x, event_y);
 423         group->ungrab(ev->time);
 424
 425         switch (_mouse_state) {
 426         case Pressed: // Clicked
 427
 428                 switch (trackview.editor().current_mouse_mode()) {
 429                 case MouseObject:
 430                 case MouseTimeFX:
 431                         {
 432                                 clear_selection();
 433
 434                                 if (Keyboard::is_insert_note_event(ev)) {
 435
 436                                         double event_x, event_y;
 437
 438                                         event_x = ev->x;
 439                                         event_y = ev->y;
 440                                         group->w2i(event_x, event_y);
 441
 442                                         bool success;
 443                                         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, trackview.editor().pixel_to_frame (event_x));
 444
 445                                         if (!success) {
 446                                                 beats = 1;
 447                                         }
 448
 449                                         create_note_at (event_x, event_y, beats, true);
 450                                 }
 451
 452                                 break;
 453                         }
 454                 case MouseRange:
 455                         {
 456                                 bool success;
 457                                 Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, trackview.editor().pixel_to_frame (event_x));
 458
 459                                 if (!success) {
 460                                         beats = 1;
 461                                 }
 462
 463                                 create_note_at (event_x, event_y, beats, true);
 464
 465                                 break;
 466                         }
 467                 default:
 468                         break;
 469                 }
 470
 471                 _mouse_state = None;
 472                 break;
 473
 474         case SelectRectDragging: // Select drag done
 475
 476                 _mouse_state = None;
 477                 delete _drag_rect;
 478                 _drag_rect = 0;
 479                 break;
 480
 481         case AddDragging: // Add drag done
 482
 483                 _mouse_state = None;
 484
 485                 if (Keyboard::is_insert_note_event(ev) || trackview.editor().current_mouse_mode() == MouseRange) {
 486
 487                         if (_drag_rect->property_x2() > _drag_rect->property_x1() + 2) {
 488
 489                                 const double x  = _drag_rect->property_x1();
 490                                 const double length = trackview.editor().pixel_to_frame (_drag_rect->property_x2() - _drag_rect->property_x1());
 491
 492                                 create_note_at (x, _drag_rect->property_y1(), frames_to_beats(length), true);
 493                         }
 494                 }
 495
 496                 delete _drag_rect;
 497                 _drag_rect = 0;
 498
 499                 create_ghost_note (ev->x, ev->y);
 500
 501         default:
 502                 break;
 503         }
 504
 505         return false;
 506 }
 507
 508 bool
 509 MidiRegionView::motion (GdkEventMotion* ev)
 510 {
 511         double event_x, event_y;
 512         framepos_t event_frame = 0;
 513
 514         event_x = ev->x;
 515         event_y = ev->y;
 516         group->w2i(event_x, event_y);
 517
 518         // convert event_x to global frame
 519         event_frame = snap_pixel_to_frame (event_x);
 520
 521         if (!_ghost_note && trackview.editor().current_mouse_mode() != MouseRange
 522             && Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())
 523             && _mouse_state != AddDragging) {
 524
 525                 create_ghost_note (ev->x, ev->y);
 526         } else if (_ghost_note && trackview.editor().current_mouse_mode() != MouseRange
 527                    && Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())) {
 528
 529                 update_ghost_note (ev->x, ev->y);
 530         } else if (_ghost_note && trackview.editor().current_mouse_mode() != MouseRange) {
 531
 532                 delete _ghost_note;
 533                 _ghost_note = 0;
 534
 535                 trackview.editor().verbose_cursor()->hide ();
 536         } else if (_ghost_note && trackview.editor().current_mouse_mode() == MouseRange) {
 537                 update_ghost_note (ev->x, ev->y);
 538         }
 539
 540         /* any motion immediately hides velocity text that may have been visible */
 541
 542         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 543                 (*i)->hide_velocity ();
 544         }
 545
 546         switch (_mouse_state) {
 547         case Pressed: // Maybe start a drag, if we've moved a bit
 548
 549                 if (fabs (event_x - _last_x) < 1 && fabs (event_y - _last_y) < 1) {
 550                         /* no appreciable movement since the button was pressed */
 551                         return false;
 552                 }
 553
 554                 if (_pressed_button == 1 && trackview.editor().current_mouse_mode() == MouseObject
 555                     && !Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())) {
 556                         // Select drag start
 557
 558                         group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 559                                     Gdk::Cursor(Gdk::FLEUR), ev->time);
 560
 561                         _last_x = event_x;
 562                         _last_y = event_y;
 563                         _drag_start_x = event_x;
 564                         _drag_start_y = event_y;
 565
 566                         _drag_rect = new ArdourCanvas::SimpleRect(*group);
 567                         _drag_rect->property_x1() = event_x;
 568                         _drag_rect->property_y1() = event_y;
 569                         _drag_rect->property_x2() = event_x;
 570                         _drag_rect->property_y2() = event_y;
 571                         _drag_rect->property_outline_what() = 0xFF;
 572                         _drag_rect->property_outline_color_rgba()
 573                                 = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 574                         _drag_rect->property_fill_color_rgba()
 575                                 = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 576
 577                         _mouse_state = SelectRectDragging;
 578                         return true;
 579
 580                 } else if (trackview.editor().internal_editing()) {
 581                         // Add note drag start
 582
 583                         delete _ghost_note;
 584                         _ghost_note = 0;
 585
 586                         group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 587                                     Gdk::Cursor(Gdk::FLEUR), ev->time);
 588
 589                         _last_x = event_x;
 590                         _last_y = event_y;
 591                         _drag_start_x = event_x;
 592                         _drag_start_y = event_y;
 593
 594                         _drag_rect = new ArdourCanvas::SimpleRect(*group);
 595                         _drag_rect->property_x1() = trackview.editor().frame_to_pixel(event_frame);
 596
 597                         _drag_rect->property_y1() = midi_stream_view()->note_to_y(
 598                                 midi_stream_view()->y_to_note(event_y));
 599                         _drag_rect->property_x2() = trackview.editor().frame_to_pixel(event_frame);
 600                         _drag_rect->property_y2() = _drag_rect->property_y1()
 601                                 + floor(midi_stream_view()->note_height());
 602                         _drag_rect->property_outline_what() = 0xFF;
 603                         _drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 604                         _drag_rect->property_fill_color_rgba()    = 0xFFFFFF66;
 605
 606                         _mouse_state = AddDragging;
 607
 608                         if (_ghost_note) {
 609
 610                                 delete _ghost_note;
 611                                 _ghost_note = 0;
 612
 613                                 trackview.editor().verbose_cursor()->hide ();
 614                         }
 615
 616                         return true;
 617                 }
 618
 619                 return false;
 620
 621         case SelectRectDragging: // Select drag motion
 622         case AddDragging: // Add note drag motion
 623
 624                 if (ev->is_hint) {
 625                         int t_x;
 626                         int t_y;
 627                         GdkModifierType state;
 628                         gdk_window_get_pointer(ev->window, &t_x, &t_y, &state);
 629                         event_x = t_x;
 630                         event_y = t_y;
 631                 }
 632
 633                 if (_mouse_state == AddDragging) {
 634                         event_x = trackview.editor().frame_to_pixel(event_frame);
 635                 }
 636
 637                 if (_drag_rect) {
 638
 639                         if (event_x > _drag_start_x) {
 640                                 _drag_rect->property_x2() = event_x;
 641                         }
 642                         else {
 643                                 _drag_rect->property_x1() = event_x;
 644                         }
 645                 }
 646
 647                 if (_drag_rect && _mouse_state == SelectRectDragging) {
 648
 649                         if (event_y > _drag_start_y) {
 650                                 _drag_rect->property_y2() = event_y;
 651                         }
 652                         else {
 653                                 _drag_rect->property_y1() = event_y;
 654                         }
 655
 656                         update_drag_selection(_drag_start_x, event_x, _drag_start_y, event_y);
 657                 }
 658
 659                 _last_x = event_x;
 660                 _last_y = event_y;
 661
 662         case SelectTouchDragging:
 663                 return false;
 664
 665         default:
 666                 break;
 667         }
 668
 669         return false;
 670 }
 671
 672
 673 bool
 674 MidiRegionView::scroll (GdkEventScroll* ev)
 675 {
 676         if (_selection.empty()) {
 677                 return false;
 678         }
 679
 680         trackview.editor().verbose_cursor()->hide ();
 681
 682         bool fine = !Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier);
 683
 684         if (ev->direction == GDK_SCROLL_UP) {
 685                 change_velocities (true, fine, false);
 686         } else if (ev->direction == GDK_SCROLL_DOWN) {
 687                 change_velocities (false, fine, false);
 688         }
 689         return true;
 690 }
 691
 692 bool
 693 MidiRegionView::key_press (GdkEventKey* ev)
 694 {
 695         /* since GTK bindings are generally activated on press, and since
 696            detectable auto-repeat is the name of the game and only sends
 697            repeated presses, carry out key actions at key press, not release.
 698         */
 699
 700         if (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R) {
 701                 _mouse_state = SelectTouchDragging;
 702                 return true;
 703
 704         } else if (ev->keyval == GDK_Escape) {
 705                 clear_selection();
 706                 _mouse_state = None;
 707
 708         } else if (ev->keyval == GDK_comma || ev->keyval == GDK_period) {
 709
 710                 bool start = (ev->keyval == GDK_comma);
 711                 bool end = (ev->keyval == GDK_period);
 712                 bool shorter = Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier);
 713                 bool fine = Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 714
 715                 change_note_lengths (fine, shorter, 0.0, start, end);
 716
 717                 return true;
 718
 719         } else if (ev->keyval == GDK_Delete) {
 720
 721                 delete_selection();
 722                 return true;
 723
 724         } else if (ev->keyval == GDK_Tab) {
 725
 726                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 727                         goto_previous_note (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier));
 728                 } else {
 729                         goto_next_note (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier));
 730                 }
 731                 return true;
 732
 733         } else if (ev->keyval == GDK_ISO_Left_Tab) {
 734
 735                 /* Shift-TAB generates ISO Left Tab, for some reason */
 736
 737                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 738                         goto_previous_note (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier));
 739                 } else {
 740                         goto_next_note (Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier));
 741                 }
 742                 return true;
 743
 744
 745
 746         } else if (ev->keyval == GDK_Up) {
 747
 748                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 749                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 750
 751                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 752                         change_velocities (true, fine, allow_smush);
 753                 } else {
 754                         transpose (true, fine, allow_smush);
 755                 }
 756                 return true;
 757
 758         } else if (ev->keyval == GDK_Down) {
 759
 760                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 761                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 762
 763                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 764                         change_velocities (false, fine, allow_smush);
 765                 } else {
 766                         transpose (false, fine, allow_smush);
 767                 }
 768                 return true;
 769
 770         } else if (ev->keyval == GDK_Left) {
 771
 772                 nudge_notes (false);
 773                 return true;
 774
 775         } else if (ev->keyval == GDK_Right) {
 776
 777                 nudge_notes (true);
 778                 return true;
 779
 780         } else if (ev->keyval == GDK_Control_L) {
 781                 return true;
 782
 783         } else if (ev->keyval == GDK_c) {
 784                 channel_edit ();
 785                 return true;
 786         }
 787
 788         return false;
 789 }
 790
 791 bool
 792 MidiRegionView::key_release (GdkEventKey* ev)
 793 {
 794         if (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R) {
 795                 _mouse_state = None;
 796                 return true;
 797         }
 798         return false;
 799 }
 800
 801 void
 802 MidiRegionView::channel_edit ()
 803 {
 804         bool first = true;
 805         uint8_t current_channel;
 806
 807         if (_selection.empty()) {
 808                 return;
 809         }
 810
 811         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 812                 if (first) {
 813                         current_channel = (*i)->note()->channel ();
 814                         first = false;
 815                 }
 816         }
 817
 818         MidiChannelDialog channel_dialog (current_channel);
 819         int ret = channel_dialog.run ();
 820
 821         switch (ret) {
 822         case Gtk::RESPONSE_OK:
 823                 break;
 824         default:
 825                 return;
 826         }
 827
 828         uint8_t new_channel = channel_dialog.active_channel ();
 829
 830         start_note_diff_command (_("channel edit"));
 831
 832         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
 833                 Selection::iterator next = i;
 834                 ++next;
 835                 change_note_channel (*i, new_channel);
 836                 i = next;
 837         }
 838
 839         apply_diff ();
 840 }
 841
 842 void
 843 MidiRegionView::show_list_editor ()
 844 {
 845         if (!_list_editor) {
 846                 _list_editor = new MidiListEditor (trackview.session(), midi_region());
 847         }
 848         _list_editor->present ();
 849 }
 850
 851 /** Add a note to the model, and the view, at a canvas (click) coordinate.
 852  * \param x horizontal position in pixels
 853  * \param y vertical position in pixels
 854  * \param length duration of the note in beats, which will be snapped to the grid
 855  * \param sh true to make the note 1 frame shorter than the snapped version of \a length.
 856  */
 857 void
 858 MidiRegionView::create_note_at(double x, double y, double length, bool sh)
 859 {
 860         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 861         MidiStreamView* const view = mtv->midi_view();
 862
 863         double note = view->y_to_note(y);
 864
 865         assert(note >= 0.0);
 866         assert(note <= 127.0);
 867
 868         // Start of note in frames relative to region start
 869         framepos_t const start_frames = snap_pixel_to_frame (x);
 870         assert(start_frames >= 0);
 871
 872         // Snap length
 873         length = frames_to_beats(
 874                 snap_frame_to_frame(start_frames + beats_to_frames(length)) - start_frames);
 875
 876         assert (length != 0);
 877
 878         if (sh) {
 879                 length = frames_to_beats (beats_to_frames (length) - 1);
 880         }
 881
 882         const boost::shared_ptr<NoteType> new_note (new NoteType (mtv->get_channel_for_add (),
 883                                                                   frames_to_beats(start_frames + _region->start()), length,
 884                                                                   (uint8_t)note, 0x40));
 885
 886         if (_model->contains (new_note)) {
 887                 return;
 888         }
 889
 890         view->update_note_range(new_note->note());
 891
 892         MidiModel::NoteDiffCommand* cmd = _model->new_note_diff_command("add note");
 893         cmd->add (new_note);
 894         _model->apply_command(*trackview.session(), cmd);
 895
 896         play_midi_note (new_note);
 897 }
 898
 899 void
 900 MidiRegionView::clear_events()
 901 {
 902         clear_selection();
 903
 904         MidiGhostRegion* gr;
 905         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 906                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 907                         gr->clear_events();
 908                 }
 909         }
 910
 911         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 912                 delete *i;
 913         }
 914
 915         _events.clear();
 916         _patch_changes.clear();
 917         _sys_exes.clear();
 918         _optimization_iterator = _events.end();
 919 }
 920
 921 void
 922 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 923 {
 924         _model = model;
 925
 926         content_connection.disconnect ();
 927         _model->ContentsChanged.connect (content_connection, invalidator (*this), boost::bind (&MidiRegionView::redisplay_model, this), gui_context());
 928
 929         clear_events ();
 930
 931         if (_enable_display) {
 932                 redisplay_model();
 933         }
 934 }
 935
 936 void
 937 MidiRegionView::start_note_diff_command (string name)
 938 {
 939         if (!_note_diff_command) {
 940                 _note_diff_command = _model->new_note_diff_command (name);
 941         }
 942 }
 943
 944 void
 945 MidiRegionView::note_diff_add_note (const boost::shared_ptr<NoteType> note, bool selected, bool show_velocity)
 946 {
 947         if (_note_diff_command) {
 948                 _note_diff_command->add (note);
 949         }
 950         if (selected) {
 951                 _marked_for_selection.insert(note);
 952         }
 953         if (show_velocity) {
 954                 _marked_for_velocity.insert(note);
 955         }
 956 }
 957
 958 void
 959 MidiRegionView::note_diff_remove_note (ArdourCanvas::CanvasNoteEvent* ev)
 960 {
 961         if (_note_diff_command && ev->note()) {
 962                 _note_diff_command->remove(ev->note());
 963         }
 964 }
 965
 966 void
 967 MidiRegionView::note_diff_add_change (ArdourCanvas::CanvasNoteEvent* ev,
 968                                       MidiModel::NoteDiffCommand::Property property,
 969                                       uint8_t val)
 970 {
 971         if (_note_diff_command) {
 972                 _note_diff_command->change (ev->note(), property, val);
 973         }
 974 }
 975
 976 void
 977 MidiRegionView::note_diff_add_change (ArdourCanvas::CanvasNoteEvent* ev,
 978                                       MidiModel::NoteDiffCommand::Property property,
 979                                       Evoral::MusicalTime val)
 980 {
 981         if (_note_diff_command) {
 982                 _note_diff_command->change (ev->note(), property, val);
 983         }
 984 }
 985
 986 void
 987 MidiRegionView::apply_diff (bool as_subcommand)
 988 {
 989         bool add_or_remove;
 990
 991         if (!_note_diff_command) {
 992                 return;
 993         }
 994
 995         if ((add_or_remove = _note_diff_command->adds_or_removes())) {
 996                 // Mark all selected notes for selection when model reloads
 997                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 998                         _marked_for_selection.insert((*i)->note());
 999                 }
1000         }
1001
1002         if (as_subcommand) {
1003                 _model->apply_command_as_subcommand (*trackview.session(), _note_diff_command);
1004         } else {
1005                 _model->apply_command (*trackview.session(), _note_diff_command);
1006         }
1007
1008         _note_diff_command = 0;
1009         midi_view()->midi_track()->playlist_modified();
1010
1011         if (add_or_remove) {
1012                 _marked_for_selection.clear();
1013         }
1014
1015         _marked_for_velocity.clear();
1016 }
1017
1018 void
1019 MidiRegionView::abort_command()
1020 {
1021         delete _note_diff_command;
1022         _note_diff_command = 0;
1023         clear_selection();
1024 }
1025
1026 CanvasNoteEvent*
1027 MidiRegionView::find_canvas_note (boost::shared_ptr<NoteType> note)
1028 {
1029         if (_optimization_iterator != _events.end()) {
1030                 ++_optimization_iterator;
1031         }
1032
1033         if (_optimization_iterator != _events.end() && (*_optimization_iterator)->note() == note) {
1034                 return *_optimization_iterator;
1035         }
1036
1037         for (_optimization_iterator = _events.begin(); _optimization_iterator != _events.end(); ++_optimization_iterator) {
1038                 if ((*_optimization_iterator)->note() == note) {
1039                         return *_optimization_iterator;
1040                 }
1041         }
1042
1043         return 0;
1044 }
1045
1046 void
1047 MidiRegionView::get_events (Events& e, Evoral::Sequence<Evoral::MusicalTime>::NoteOperator op, uint8_t val, int chan_mask)
1048 {
1049         MidiModel::Notes notes;
1050         _model->get_notes (notes, op, val, chan_mask);
1051
1052         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1053                 CanvasNoteEvent* cne = find_canvas_note (*n);
1054                 if (cne) {
1055                         e.push_back (cne);
1056                 }
1057         }
1058 }
1059
1060 void
1061 MidiRegionView::redisplay_model()
1062 {
1063         // Don't redisplay the model if we're currently recording and displaying that
1064         if (_active_notes) {
1065                 return;
1066         }
1067
1068         if (!_model) {
1069                 return;
1070         }
1071
1072         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1073                 (*i)->invalidate ();
1074         }
1075
1076         MidiModel::ReadLock lock(_model->read_lock());
1077
1078         MidiModel::Notes& notes (_model->notes());
1079         _optimization_iterator = _events.begin();
1080
1081         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1082
1083                 boost::shared_ptr<NoteType> note (*n);
1084                 CanvasNoteEvent* cne;
1085                 bool visible;
1086
1087                 if (note_in_region_range (note, visible)) {
1088
1089                         if ((cne = find_canvas_note (note)) != 0) {
1090
1091                                 cne->validate ();
1092
1093                                 CanvasNote* cn;
1094                                 CanvasHit* ch;
1095
1096                                 if ((cn = dynamic_cast<CanvasNote*>(cne)) != 0) {
1097                                         update_note (cn);
1098                                 } else if ((ch = dynamic_cast<CanvasHit*>(cne)) != 0) {
1099                                         update_hit (ch);
1100                                 }
1101
1102                                 if (visible) {
1103                                         cne->show ();
1104                                 } else {
1105                                         cne->hide ();
1106                                 }
1107
1108                         } else {
1109
1110                                 add_note (note, visible);
1111                         }
1112
1113                 } else {
1114
1115                         if ((cne = find_canvas_note (note)) != 0) {
1116                                 cne->validate ();
1117                                 cne->hide ();
1118                         }
1119                 }
1120         }
1121
1122
1123         /* remove note items that are no longer valid */
1124
1125         for (Events::iterator i = _events.begin(); i != _events.end(); ) {
1126                 if (!(*i)->valid ()) {
1127                         delete *i;
1128                         i = _events.erase (i);
1129                 } else {
1130                         ++i;
1131                 }
1132         }
1133
1134         _patch_changes.clear();
1135         _sys_exes.clear();
1136
1137         display_sysexes();
1138         display_patch_changes ();
1139
1140         _marked_for_selection.clear ();
1141         _marked_for_velocity.clear ();
1142
1143         /* we may have caused _events to contain things out of order (e.g. if a note
1144            moved earlier or later). we don't generally need them in time order, but
1145            make a note that a sort is required for those cases that require it.
1146         */
1147
1148         _sort_needed = true;
1149 }
1150
1151 void
1152 MidiRegionView::display_patch_changes ()
1153 {
1154         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1155         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
1156
1157         for (uint8_t i = 0; i < 16; ++i) {
1158                 if (chn_mask & (1<<i)) {
1159                         display_patch_changes_on_channel (i);
1160                 }
1161         }
1162 }
1163
1164 void
1165 MidiRegionView::display_patch_changes_on_channel (uint8_t channel)
1166 {
1167         for (MidiModel::PatchChanges::const_iterator i = _model->patch_changes().begin(); i != _model->patch_changes().end(); ++i) {
1168
1169                 if ((*i)->channel() != channel) {
1170                         continue;
1171                 }
1172
1173                 MIDI::Name::PatchPrimaryKey patch_key ((*i)->bank_msb (), (*i)->bank_lsb (), (*i)->program ());
1174
1175                 boost::shared_ptr<MIDI::Name::Patch> patch =
1176                         MIDI::Name::MidiPatchManager::instance().find_patch(
1177                                 _model_name, _custom_device_mode, channel, patch_key);
1178
1179                 if (patch != 0) {
1180                         add_canvas_patch_change (*i, patch->name());
1181                 } else {
1182                         char buf[16];
1183                         /* program and bank numbers are zero-based: convert to one-based */
1184                         snprintf (buf, 16, "%d\n%d", (*i)->program() + 1, (*i)->bank() + 1);
1185                         add_canvas_patch_change (*i, buf);
1186                 }
1187         }
1188 }
1189
1190 void
1191 MidiRegionView::display_sysexes()
1192 {
1193         for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
1194                 Evoral::MusicalTime time = (*i)->time();
1195                 assert(time >= 0);
1196
1197                 ostringstream str;
1198                 str << hex;
1199                 for (uint32_t b = 0; b < (*i)->size(); ++b) {
1200                         str << int((*i)->buffer()[b]);
1201                         if (b != (*i)->size() -1) {
1202                                 str << " ";
1203                         }
1204                 }
1205                 string text = str.str();
1206
1207                 const double x = trackview.editor().frame_to_pixel(beats_to_frames(time));
1208
1209                 double height = midi_stream_view()->contents_height();
1210
1211                 boost::shared_ptr<CanvasSysEx> sysex = boost::shared_ptr<CanvasSysEx>(
1212                         new CanvasSysEx(*this, *_note_group, text, height, x, 1.0));
1213
1214                 // Show unless patch change is beyond the region bounds
1215                 if (time - _region->start() >= _region->length() || time < _region->start()) {
1216                         sysex->hide();
1217                 } else {
1218                         sysex->show();
1219                 }
1220
1221                 _sys_exes.push_back(sysex);
1222         }
1223 }
1224
1225
1226 MidiRegionView::~MidiRegionView ()
1227 {
1228         in_destructor = true;
1229
1230         trackview.editor().verbose_cursor()->hide ();
1231
1232         note_delete_connection.disconnect ();
1233
1234         delete _list_editor;
1235
1236         RegionViewGoingAway (this); /* EMIT_SIGNAL */
1237
1238         if (_active_notes) {
1239                 end_write();
1240         }
1241
1242         _selection.clear();
1243         clear_events();
1244
1245         delete _note_group;
1246         delete _note_diff_command;
1247         delete _step_edit_cursor;
1248         delete _temporary_note_group;
1249 }
1250
1251 void
1252 MidiRegionView::region_resized (const PropertyChange& what_changed)
1253 {
1254         RegionView::region_resized(what_changed);
1255
1256         if (what_changed.contains (ARDOUR::Properties::position)) {
1257                 set_duration(_region->length(), 0);
1258                 if (_enable_display) {
1259                         redisplay_model();
1260                 }
1261         }
1262 }
1263
1264 void
1265 MidiRegionView::reset_width_dependent_items (double pixel_width)
1266 {
1267         RegionView::reset_width_dependent_items(pixel_width);
1268         assert(_pixel_width == pixel_width);
1269
1270         if (_enable_display) {
1271                 redisplay_model();
1272         }
1273
1274         move_step_edit_cursor (_step_edit_cursor_position);
1275         set_step_edit_cursor_width (_step_edit_cursor_width);
1276 }
1277
1278 void
1279 MidiRegionView::set_height (double height)
1280 {
1281         static const double FUDGE = 2.0;
1282         const double old_height = _height;
1283         RegionView::set_height(height);
1284         _height = height - FUDGE;
1285
1286         apply_note_range(midi_stream_view()->lowest_note(),
1287                          midi_stream_view()->highest_note(),
1288                          height != old_height + FUDGE);
1289
1290         if (name_pixbuf) {
1291                 name_pixbuf->raise_to_top();
1292         }
1293
1294         for (PatchChanges::iterator x = _patch_changes.begin(); x != _patch_changes.end(); ++x) {
1295                 (*x)->set_height (midi_stream_view()->contents_height());
1296         }
1297
1298         if (_step_edit_cursor) {
1299                 _step_edit_cursor->property_y2() = midi_stream_view()->contents_height();
1300         }
1301 }
1302
1303
1304 /** Apply the current note range from the stream view
1305  * by repositioning/hiding notes as necessary
1306  */
1307 void
1308 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
1309 {
1310         if (!_enable_display) {
1311                 return;
1312         }
1313
1314         if (!force && _current_range_min == min && _current_range_max == max) {
1315                 return;
1316         }
1317
1318         _current_range_min = min;
1319         _current_range_max = max;
1320
1321         for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
1322                 CanvasNoteEvent* event = *i;
1323                 boost::shared_ptr<NoteType> note (event->note());
1324
1325                 if (note->note() < _current_range_min ||
1326                     note->note() > _current_range_max) {
1327                         event->hide();
1328                 } else {
1329                         event->show();
1330                 }
1331
1332                 if (CanvasNote* cnote = dynamic_cast<CanvasNote*>(event)) {
1333
1334                         const double y1 = midi_stream_view()->note_to_y(note->note());
1335                         const double y2 = y1 + floor(midi_stream_view()->note_height());
1336
1337                         cnote->property_y1() = y1;
1338                         cnote->property_y2() = y2;
1339
1340                 } else if (CanvasHit* chit = dynamic_cast<CanvasHit*>(event)) {
1341
1342                         const double diamond_size = update_hit (chit);
1343
1344                         chit->set_height (diamond_size);
1345                 }
1346         }
1347 }
1348
1349 GhostRegion*
1350 MidiRegionView::add_ghost (TimeAxisView& tv)
1351 {
1352         CanvasNote* note;
1353
1354         double unit_position = _region->position () / samples_per_unit;
1355         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
1356         MidiGhostRegion* ghost;
1357
1358         if (mtv && mtv->midi_view()) {
1359                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group
1360                    to allow having midi notes on top of note lines and waveforms.
1361                 */
1362                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
1363         } else {
1364                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
1365         }
1366
1367         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1368                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
1369                         ghost->add_note(note);
1370                 }
1371         }
1372
1373         ghost->set_height ();
1374         ghost->set_duration (_region->length() / samples_per_unit);
1375         ghosts.push_back (ghost);
1376
1377         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&RegionView::remove_ghost, this, _1), gui_context());
1378
1379         return ghost;
1380 }
1381
1382
1383 /** Begin tracking note state for successive calls to add_event
1384  */
1385 void
1386 MidiRegionView::begin_write()
1387 {
1388         assert(!_active_notes);
1389         _active_notes = new CanvasNote*[128];
1390         for (unsigned i=0; i < 128; ++i) {
1391                 _active_notes[i] = 0;
1392         }
1393 }
1394
1395
1396 /** Destroy note state for add_event
1397  */
1398 void
1399 MidiRegionView::end_write()
1400 {
1401         delete[] _active_notes;
1402         _active_notes = 0;
1403         _marked_for_selection.clear();
1404         _marked_for_velocity.clear();
1405 }
1406
1407
1408 /** Resolve an active MIDI note (while recording).
1409  */
1410 void
1411 MidiRegionView::resolve_note(uint8_t note, double end_time)
1412 {
1413         if (midi_view()->note_mode() != Sustained) {
1414                 return;
1415         }
1416
1417         if (_active_notes && _active_notes[note]) {
1418
1419                 const framepos_t end_time_frames = beats_to_frames(end_time);
1420
1421                 _active_notes[note]->property_x2() = trackview.editor().frame_to_pixel(end_time_frames);
1422                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
1423                 _active_notes[note] = 0;
1424         }
1425 }
1426
1427
1428 /** Extend active notes to rightmost edge of region (if length is changed)
1429  */
1430 void
1431 MidiRegionView::extend_active_notes()
1432 {
1433         if (!_active_notes) {
1434                 return;
1435         }
1436
1437         for (unsigned i=0; i < 128; ++i) {
1438                 if (_active_notes[i]) {
1439                         _active_notes[i]->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1440                 }
1441         }
1442 }
1443
1444
1445 void
1446 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
1447 {
1448         if (_no_sound_notes || !trackview.editor().sound_notes()) {
1449                 return;
1450         }
1451
1452         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1453
1454         if (!route_ui || !route_ui->midi_track()) {
1455                 return;
1456         }
1457
1458         NotePlayer* np = new NotePlayer (route_ui->midi_track());
1459         np->add (note);
1460         np->play ();
1461 }
1462
1463 void
1464 MidiRegionView::play_midi_chord (vector<boost::shared_ptr<NoteType> > notes)
1465 {
1466         if (_no_sound_notes || !trackview.editor().sound_notes()) {
1467                 return;
1468         }
1469
1470         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1471
1472         if (!route_ui || !route_ui->midi_track()) {
1473                 return;
1474         }
1475
1476         NotePlayer* np = new NotePlayer (route_ui->midi_track());
1477
1478         for (vector<boost::shared_ptr<NoteType> >::iterator n = notes.begin(); n != notes.end(); ++n) {
1479                 np->add (*n);
1480         }
1481
1482         np->play ();
1483 }
1484
1485
1486 bool
1487 MidiRegionView::note_in_region_range(const boost::shared_ptr<NoteType> note, bool& visible) const
1488 {
1489         const framepos_t note_start_frames = beats_to_frames(note->time());
1490
1491         bool outside = (note_start_frames - _region->start() >= _region->length()) ||
1492                 (note_start_frames < _region->start());
1493
1494         visible = (note->note() >= midi_stream_view()->lowest_note()) &&
1495                 (note->note() <= midi_stream_view()->highest_note());
1496
1497         return !outside;
1498 }
1499
1500 /** Update a canvas note's size from its model note.
1501  *  @param ev Canvas note to update.
1502  *  @param update_ghost_regions true to update the note in any ghost regions that we have, otherwise false.
1503  */
1504 void
1505 MidiRegionView::update_note (CanvasNote* ev, bool update_ghost_regions)
1506 {
1507         boost::shared_ptr<NoteType> note = ev->note();
1508
1509         const framepos_t note_start_frames = beats_to_frames(note->time());
1510
1511         /* trim note display to not overlap the end of its region */
1512         const framepos_t note_end_frames = min (beats_to_frames (note->end_time()), _region->start() + _region->length());
1513
1514         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1515         const double y1 = midi_stream_view()->note_to_y(note->note());
1516         const double note_endpixel = trackview.editor().frame_to_pixel(note_end_frames - _region->start());
1517
1518         ev->property_x1() = x;
1519         ev->property_y1() = y1;
1520
1521         if (note->length() > 0) {
1522                 ev->property_x2() = note_endpixel;
1523         } else {
1524                 ev->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1525         }
1526
1527         ev->property_y2() = y1 + floor(midi_stream_view()->note_height());
1528
1529         if (note->length() == 0) {
1530                 if (_active_notes) {
1531                         assert(note->note() < 128);
1532                         // If this note is already active there's a stuck note,
1533                         // finish the old note rectangle
1534                         if (_active_notes[note->note()]) {
1535                                 CanvasNote* const old_rect = _active_notes[note->note()];
1536                                 boost::shared_ptr<NoteType> old_note = old_rect->note();
1537                                 old_rect->property_x2() = x;
1538                                 old_rect->property_outline_what() = (guint32) 0xF;
1539                         }
1540                         _active_notes[note->note()] = ev;
1541                 }
1542                 /* outline all but right edge */
1543                 ev->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
1544         } else {
1545                 /* outline all edges */
1546                 ev->property_outline_what() = (guint32) 0xF;
1547         }
1548
1549         if (update_ghost_regions) {
1550                 for (std::vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
1551                         MidiGhostRegion* gr = dynamic_cast<MidiGhostRegion*> (*i);
1552                         if (gr) {
1553                                 gr->update_note (ev);
1554                         }
1555                 }
1556         }
1557 }
1558
1559 double
1560 MidiRegionView::update_hit (CanvasHit* ev)
1561 {
1562         boost::shared_ptr<NoteType> note = ev->note();
1563
1564         const framepos_t note_start_frames = beats_to_frames(note->time());
1565         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1566         const double diamond_size = midi_stream_view()->note_height() / 2.0;
1567         const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
1568
1569         ev->move_to (x, y);
1570
1571         return diamond_size;
1572 }
1573
1574 /** Add a MIDI note to the view (with length).
1575  *
1576  * If in sustained mode, notes with length 0 will be considered active
1577  * notes, and resolve_note should be called when the corresponding note off
1578  * event arrives, to properly display the note.
1579  */
1580 void
1581 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note, bool visible)
1582 {
1583         CanvasNoteEvent* event = 0;
1584
1585         assert(note->time() >= 0);
1586         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
1587
1588         //ArdourCanvas::Group* const group = (ArdourCanvas::Group*) get_canvas_group();
1589
1590         if (midi_view()->note_mode() == Sustained) {
1591
1592                 CanvasNote* ev_rect = new CanvasNote(*this, *_note_group, note);
1593
1594                 update_note (ev_rect);
1595
1596                 event = ev_rect;
1597
1598                 MidiGhostRegion* gr;
1599
1600                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
1601                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
1602                                 gr->add_note(ev_rect);
1603                         }
1604                 }
1605
1606         } else if (midi_view()->note_mode() == Percussive) {
1607
1608                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
1609
1610                 CanvasHit* ev_diamond = new CanvasHit(*this, *_note_group, diamond_size, note);
1611
1612                 update_hit (ev_diamond);
1613
1614                 event = ev_diamond;
1615
1616         } else {
1617                 event = 0;
1618         }
1619
1620         if (event) {
1621                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
1622                         note_selected(event, true);
1623                 }
1624
1625                 if (_marked_for_velocity.find(note) != _marked_for_velocity.end()) {
1626                         event->show_velocity();
1627                 }
1628
1629                 event->on_channel_selection_change(_last_channel_selection);
1630                 _events.push_back(event);
1631
1632                 if (visible) {
1633                         event->show();
1634                 } else {
1635                         event->hide ();
1636                 }
1637         }
1638
1639         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1640         MidiStreamView* const view = mtv->midi_view();
1641
1642         view->update_note_range(note->note());
1643 }
1644
1645 void
1646 MidiRegionView::step_add_note (uint8_t channel, uint8_t number, uint8_t velocity,
1647                                Evoral::MusicalTime pos, Evoral::MusicalTime len)
1648 {
1649         boost::shared_ptr<NoteType> new_note (new NoteType (channel, pos, len, number, velocity));
1650
1651         /* potentially extend region to hold new note */
1652
1653         framepos_t end_frame = _region->position() + beats_to_frames (new_note->end_time());
1654         framepos_t region_end = _region->position() + _region->length() - 1;
1655
1656         if (end_frame > region_end) {
1657                 _region->set_length (end_frame - _region->position());
1658         }
1659
1660         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1661         MidiStreamView* const view = mtv->midi_view();
1662
1663         view->update_note_range(new_note->note());
1664
1665         _marked_for_selection.clear ();
1666         clear_selection ();
1667
1668         start_note_diff_command (_("step add"));
1669         note_diff_add_note (new_note, true, false);
1670         apply_diff();
1671
1672         // last_step_edit_note = new_note;
1673 }
1674
1675 void
1676 MidiRegionView::step_sustain (Evoral::MusicalTime beats)
1677 {
1678         change_note_lengths (false, false, beats, false, true);
1679 }
1680
1681 void
1682 MidiRegionView::add_canvas_patch_change (MidiModel::PatchChangePtr patch, const string& displaytext)
1683 {
1684         assert (patch->time() >= 0);
1685
1686         const double x = trackview.editor().frame_to_pixel (beats_to_frames (patch->time()));
1687
1688         double const height = midi_stream_view()->contents_height();
1689
1690         boost::shared_ptr<CanvasPatchChange> patch_change = boost::shared_ptr<CanvasPatchChange>(
1691                 new CanvasPatchChange(*this, *_note_group,
1692                                       displaytext,
1693                                       height,
1694                                       x, 1.0,
1695                                       _model_name,
1696                                       _custom_device_mode,
1697                                       patch)
1698                           );
1699
1700         // Show unless patch change is beyond the region bounds
1701         if (patch->time() - _region->start() >= _region->length() || patch->time() < _region->start()) {
1702                 patch_change->hide();
1703         } else {
1704                 patch_change->show();
1705         }
1706
1707         _patch_changes.push_back (patch_change);
1708 }
1709
1710 void
1711 MidiRegionView::get_patch_key_at (Evoral::MusicalTime time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1712 {
1713         MidiModel::PatchChanges::iterator i = _model->patch_change_lower_bound (time);
1714         while (i != _model->patch_changes().end() && (*i)->channel() != channel) {
1715                 ++i;
1716         }
1717
1718         if (i != _model->patch_changes().end()) {
1719                 key.msb = (*i)->bank_msb ();
1720                 key.lsb = (*i)->bank_lsb ();
1721                 key.program_number = (*i)->program ();
1722         } else {
1723                 key.msb = key.lsb = key.program_number = 0;
1724         }
1725
1726         assert (key.is_sane());
1727 }
1728
1729
1730 void
1731 MidiRegionView::change_patch_change (CanvasPatchChange& pc, const MIDI::Name::PatchPrimaryKey& new_patch)
1732 {
1733         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("alter patch change"));
1734
1735         if (pc.patch()->program() != new_patch.program_number) {
1736                 c->change_program (pc.patch (), new_patch.program_number);
1737         }
1738
1739         int const new_bank = (new_patch.msb << 7) | new_patch.lsb;
1740         if (pc.patch()->bank() != new_bank) {
1741                 c->change_bank (pc.patch (), new_bank);
1742         }
1743
1744         _model->apply_command (*trackview.session(), c);
1745
1746         _patch_changes.clear ();
1747         display_patch_changes ();
1748 }
1749
1750 void
1751 MidiRegionView::change_patch_change (MidiModel::PatchChangePtr old_change, const Evoral::PatchChange<Evoral::MusicalTime> & new_change)
1752 {
1753         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("alter patch change"));
1754
1755         if (old_change->time() != new_change.time()) {
1756                 c->change_time (old_change, new_change.time());
1757         }
1758
1759         if (old_change->channel() != new_change.channel()) {
1760                 c->change_channel (old_change, new_change.channel());
1761         }
1762
1763         if (old_change->program() != new_change.program()) {
1764                 c->change_program (old_change, new_change.program());
1765         }
1766
1767         if (old_change->bank() != new_change.bank()) {
1768                 c->change_bank (old_change, new_change.bank());
1769         }
1770
1771         _model->apply_command (*trackview.session(), c);
1772
1773         _patch_changes.clear ();
1774         display_patch_changes ();
1775 }
1776
1777 /** Add a patch change to the region.
1778  *  @param t Time in frames relative to region position
1779  *  @param patch Patch to add; time and channel are ignored (time is converted from t, and channel comes from
1780  *  MidiTimeAxisView::get_channel_for_add())
1781  */
1782 void
1783 MidiRegionView::add_patch_change (framecnt_t t, Evoral::PatchChange<Evoral::MusicalTime> const & patch)
1784 {
1785         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1786
1787         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("add patch change"));
1788         c->add (MidiModel::PatchChangePtr (
1789                         new Evoral::PatchChange<Evoral::MusicalTime> (
1790                                 frames_to_beats (t + midi_region()->start()), mtv->get_channel_for_add(), patch.program(), patch.bank()
1791                                                                       )
1792                                            ));
1793
1794         _model->apply_command (*trackview.session(), c);
1795
1796         _patch_changes.clear ();
1797         display_patch_changes ();
1798 }
1799
1800 void
1801 MidiRegionView::move_patch_change (CanvasPatchChange& pc, Evoral::MusicalTime t)
1802 {
1803         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("move patch change"));
1804         c->change_time (pc.patch (), t);
1805         _model->apply_command (*trackview.session(), c);
1806
1807         _patch_changes.clear ();
1808         display_patch_changes ();
1809 }
1810
1811 void
1812 MidiRegionView::delete_patch_change (CanvasPatchChange* pc)
1813 {
1814         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("delete patch change"));
1815         c->remove (pc->patch ());
1816         _model->apply_command (*trackview.session(), c);
1817
1818         _patch_changes.clear ();
1819         display_patch_changes ();
1820 }
1821
1822 void
1823 MidiRegionView::previous_patch (CanvasPatchChange& patch)
1824 {
1825         if (patch.patch()->program() < 127) {
1826                 MIDI::Name::PatchPrimaryKey key;
1827                 get_patch_key_at (patch.patch()->time(), patch.patch()->channel(), key);
1828                 key.program_number++;
1829                 change_patch_change (patch, key);
1830         }
1831 }
1832
1833 void
1834 MidiRegionView::next_patch (CanvasPatchChange& patch)
1835 {
1836         if (patch.patch()->program() > 0) {
1837                 MIDI::Name::PatchPrimaryKey key;
1838                 get_patch_key_at (patch.patch()->time(), patch.patch()->channel(), key);
1839                 key.program_number--;
1840                 change_patch_change (patch, key);
1841         }
1842 }
1843
1844 void
1845 MidiRegionView::maybe_remove_deleted_note_from_selection (CanvasNoteEvent* cne)
1846 {
1847         if (_selection.empty()) {
1848                 return;
1849         }
1850
1851         _selection.erase (cne);
1852 }
1853
1854 void
1855 MidiRegionView::delete_selection()
1856 {
1857         if (_selection.empty()) {
1858                 return;
1859         }
1860
1861         start_note_diff_command (_("delete selection"));
1862
1863         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1864                 if ((*i)->selected()) {
1865                         _note_diff_command->remove((*i)->note());
1866                 }
1867         }
1868
1869         _selection.clear();
1870
1871         apply_diff ();
1872 }
1873
1874 void
1875 MidiRegionView::delete_note (boost::shared_ptr<NoteType> n)
1876 {
1877         start_note_diff_command (_("delete note"));
1878         _note_diff_command->remove (n);
1879         apply_diff ();
1880
1881         trackview.editor().verbose_cursor()->hide ();
1882 }
1883
1884 void
1885 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1886 {
1887         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1888                 if ((*i)->selected() && (*i) != ev) {
1889                         (*i)->set_selected(false);
1890                         (*i)->hide_velocity();
1891                 }
1892         }
1893
1894         _selection.clear();
1895 }
1896
1897 void
1898 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1899 {
1900         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
1901                 if ((*i) != ev) {
1902
1903                         Selection::iterator tmp = i;
1904                         ++tmp;
1905
1906                         (*i)->set_selected (false);
1907                         _selection.erase (i);
1908
1909                         i = tmp;
1910
1911                 } else {
1912                         ++i;
1913                 }
1914         }
1915
1916         /* don't bother with removing this regionview from the editor selection,
1917            since we're about to add another note, and thus put/keep this
1918            regionview in the editor selection.
1919         */
1920
1921         if (!ev->selected()) {
1922                 add_to_selection (ev);
1923         }
1924 }
1925
1926 void
1927 MidiRegionView::select_all_notes ()
1928 {
1929         clear_selection ();
1930
1931         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1932                 add_to_selection (*i);
1933         }
1934 }
1935
1936 void
1937 MidiRegionView::select_matching_notes (uint8_t notenum, uint16_t channel_mask, bool add, bool extend)
1938 {
1939         uint8_t low_note = 127;
1940         uint8_t high_note = 0;
1941         MidiModel::Notes& notes (_model->notes());
1942         _optimization_iterator = _events.begin();
1943
1944         if (!add) {
1945                 clear_selection ();
1946         }
1947
1948         if (extend && _selection.empty()) {
1949                 extend = false;
1950         }
1951
1952         if (extend) {
1953
1954                 /* scan existing selection to get note range */
1955
1956                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1957                         if ((*i)->note()->note() < low_note) {
1958                                 low_note = (*i)->note()->note();
1959                         }
1960                         if ((*i)->note()->note() > high_note) {
1961                                 high_note = (*i)->note()->note();
1962                         }
1963                 }
1964
1965                 low_note = min (low_note, notenum);
1966                 high_note = max (high_note, notenum);
1967         }
1968
1969         _no_sound_notes = true;
1970
1971         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1972
1973                 boost::shared_ptr<NoteType> note (*n);
1974                 CanvasNoteEvent* cne;
1975                 bool select = false;
1976
1977                 if (((1 << note->channel()) & channel_mask) != 0) {
1978                         if (extend) {
1979                                 if ((note->note() >= low_note && note->note() <= high_note)) {
1980                                         select = true;
1981                                 }
1982                         } else if (note->note() == notenum) {
1983                                 select = true;
1984                         }
1985                 }
1986
1987                 if (select) {
1988                         if ((cne = find_canvas_note (note)) != 0) {
1989                                 // extend is false because we've taken care of it,
1990                                 // since it extends by time range, not pitch.
1991                                 note_selected (cne, add, false);
1992                         }
1993                 }
1994
1995                 add = true; // we need to add all remaining matching notes, even if the passed in value was false (for "set")
1996
1997         }
1998
1999         _no_sound_notes = false;
2000 }
2001
2002 void
2003 MidiRegionView::toggle_matching_notes (uint8_t notenum, uint16_t channel_mask)
2004 {
2005         MidiModel::Notes& notes (_model->notes());
2006         _optimization_iterator = _events.begin();
2007
2008         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
2009
2010                 boost::shared_ptr<NoteType> note (*n);
2011                 CanvasNoteEvent* cne;
2012
2013                 if (note->note() == notenum && (((0x0001 << note->channel()) & channel_mask) != 0)) {
2014                         if ((cne = find_canvas_note (note)) != 0) {
2015                                 if (cne->selected()) {
2016                                         note_deselected (cne);
2017                                 } else {
2018                                         note_selected (cne, true, false);
2019                                 }
2020                         }
2021                 }
2022         }
2023 }
2024
2025 void
2026 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add, bool extend)
2027 {
2028         if (!add) {
2029                 clear_selection_except(ev);
2030         }
2031
2032         if (!extend) {
2033
2034                 if (!ev->selected()) {
2035                         add_to_selection (ev);
2036                 }
2037
2038         } else {
2039                 /* find end of latest note selected, select all between that and the start of "ev" */
2040
2041                 Evoral::MusicalTime earliest = Evoral::MaxMusicalTime;
2042                 Evoral::MusicalTime latest = 0;
2043
2044                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2045                         if ((*i)->note()->end_time() > latest) {
2046                                 latest = (*i)->note()->end_time();
2047                         }
2048                         if ((*i)->note()->time() < earliest) {
2049                                 earliest = (*i)->note()->time();
2050                         }
2051                 }
2052
2053                 if (ev->note()->end_time() > latest) {
2054                         latest = ev->note()->end_time();
2055                 }
2056
2057                 if (ev->note()->time() < earliest) {
2058                         earliest = ev->note()->time();
2059                 }
2060
2061                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2062
2063                         /* find notes entirely within OR spanning the earliest..latest range */
2064
2065                         if (((*i)->note()->time() >= earliest && (*i)->note()->end_time() <= latest) ||
2066                             ((*i)->note()->time() <= earliest && (*i)->note()->end_time() >= latest)) {
2067                                 add_to_selection (*i);
2068                         }
2069
2070                 }
2071         }
2072 }
2073
2074 void
2075 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev)
2076 {
2077         remove_from_selection (ev);
2078 }
2079
2080 void
2081 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
2082 {
2083         if (x1 > x2) {
2084                 swap (x1, x2);
2085         }
2086
2087         if (y1 > y2) {
2088                 swap (y1, y2);
2089         }
2090
2091         // TODO: Make this faster by storing the last updated selection rect, and only
2092         // adjusting things that are in the area that appears/disappeared.
2093         // We probably need a tree to be able to find events in O(log(n)) time.
2094
2095         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2096
2097                 /* check if any corner of the note is inside the rect
2098
2099                    Notes:
2100                    1) this is computing "touched by", not "contained by" the rect.
2101                    2) this does not require that events be sorted in time.
2102                 */
2103
2104                 const double ix1 = (*i)->x1();
2105                 const double ix2 = (*i)->x2();
2106                 const double iy1 = (*i)->y1();
2107                 const double iy2 = (*i)->y2();
2108
2109                 if ((ix1 >= x1 && ix1 <= x2 && iy1 >= y1 && iy1 <= y2) ||
2110                     (ix1 >= x1 && ix1 <= x2 && iy2 >= y1 && iy2 <= y2) ||
2111                     (ix2 >= x1 && ix2 <= x2 && iy1 >= y1 && iy1 <= y2) ||
2112                     (ix2 >= x1 && ix2 <= x2 && iy2 >= y1 && iy2 <= y2)) {
2113
2114                         // Inside rectangle
2115                         if (!(*i)->selected()) {
2116                                 add_to_selection (*i);
2117                         }
2118                 } else if ((*i)->selected()) {
2119                         // Not inside rectangle
2120                         remove_from_selection (*i);
2121                 }
2122         }
2123 }
2124
2125 void
2126 MidiRegionView::remove_from_selection (CanvasNoteEvent* ev)
2127 {
2128         Selection::iterator i = _selection.find (ev);
2129
2130         if (i != _selection.end()) {
2131                 _selection.erase (i);
2132         }
2133
2134         ev->set_selected (false);
2135         ev->hide_velocity ();
2136
2137         if (_selection.empty()) {
2138                 PublicEditor& editor (trackview.editor());
2139                 editor.get_selection().remove (this);
2140         }
2141 }
2142
2143 void
2144 MidiRegionView::add_to_selection (CanvasNoteEvent* ev)
2145 {
2146         bool add_mrv_selection = false;
2147
2148         if (_selection.empty()) {
2149                 add_mrv_selection = true;
2150         }
2151
2152         if (_selection.insert (ev).second) {
2153                 ev->set_selected (true);
2154                 play_midi_note ((ev)->note());
2155         }
2156
2157         if (add_mrv_selection) {
2158                 PublicEditor& editor (trackview.editor());
2159                 editor.get_selection().add (this);
2160         }
2161 }
2162
2163 void
2164 MidiRegionView::move_selection(double dx, double dy, double cumulative_dy)
2165 {
2166         typedef vector<boost::shared_ptr<NoteType> > PossibleChord;
2167         PossibleChord to_play;
2168         Evoral::MusicalTime earliest = Evoral::MaxMusicalTime;
2169
2170         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2171                 if ((*i)->note()->time() < earliest) {
2172                         earliest = (*i)->note()->time();
2173                 }
2174         }
2175
2176         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2177                 if (Evoral::musical_time_equal ((*i)->note()->time(), earliest)) {
2178                         to_play.push_back ((*i)->note());
2179                 }
2180                 (*i)->move_event(dx, dy);
2181         }
2182
2183         if (dy && !_selection.empty() && !_no_sound_notes && trackview.editor().sound_notes()) {
2184
2185                 if (to_play.size() > 1) {
2186
2187                         PossibleChord shifted;
2188
2189                         for (PossibleChord::iterator n = to_play.begin(); n != to_play.end(); ++n) {
2190                                 boost::shared_ptr<NoteType> moved_note (new NoteType (**n));
2191                                 moved_note->set_note (moved_note->note() + cumulative_dy);
2192                                 shifted.push_back (moved_note);
2193                         }
2194
2195                         play_midi_chord (shifted);
2196
2197                 } else if (!to_play.empty()) {
2198
2199                         boost::shared_ptr<NoteType> moved_note (new NoteType (*to_play.front()));
2200                         moved_note->set_note (moved_note->note() + cumulative_dy);
2201                         play_midi_note (moved_note);
2202                 }
2203         }
2204 }
2205
2206 void
2207 MidiRegionView::note_dropped(CanvasNoteEvent *, frameoffset_t dt, int8_t dnote)
2208 {
2209         assert (!_selection.empty());
2210
2211         uint8_t lowest_note_in_selection  = 127;
2212         uint8_t highest_note_in_selection = 0;
2213         uint8_t highest_note_difference = 0;
2214
2215         // find highest and lowest notes first
2216
2217         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2218                 uint8_t pitch = (*i)->note()->note();
2219                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
2220                 highest_note_in_selection = std::max(highest_note_in_selection, pitch);
2221         }
2222
2223         /*
2224           cerr << "dnote: " << (int) dnote << endl;
2225           cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
2226           << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
2227           cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
2228           << int(highest_note_in_selection) << endl;
2229           cerr << "selection size: " << _selection.size() << endl;
2230           cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
2231         */
2232
2233         // Make sure the note pitch does not exceed the MIDI standard range
2234         if (highest_note_in_selection + dnote > 127) {
2235                 highest_note_difference = highest_note_in_selection - 127;
2236         }
2237
2238         start_note_diff_command (_("move notes"));
2239
2240         for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ++i) {
2241
2242                 Evoral::MusicalTime new_time = frames_to_beats (beats_to_frames ((*i)->note()->time()) + dt);
2243
2244                 if (new_time < 0) {
2245                         continue;
2246                 }
2247
2248                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::StartTime, new_time);
2249
2250                 uint8_t original_pitch = (*i)->note()->note();
2251                 uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
2252
2253                 // keep notes in standard midi range
2254                 clamp_to_0_127(new_pitch);
2255
2256                 // keep original pitch if note is dragged outside valid midi range
2257                 if ((original_pitch != 0 && new_pitch == 0)
2258                     || (original_pitch != 127 && new_pitch == 127)) {
2259                         new_pitch = original_pitch;
2260                 }
2261
2262                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
2263                 highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
2264
2265                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::NoteNumber, new_pitch);
2266         }
2267
2268         apply_diff();
2269
2270         // care about notes being moved beyond the upper/lower bounds on the canvas
2271         if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
2272             highest_note_in_selection > midi_stream_view()->highest_note()) {
2273                 midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
2274         }
2275 }
2276
2277 framepos_t
2278 MidiRegionView::snap_pixel_to_frame(double x)
2279 {
2280         PublicEditor& editor (trackview.editor());
2281         return snap_frame_to_frame (editor.pixel_to_frame (x));
2282 }
2283
2284 /** Snap a frame offset within our region using the current snap settings.
2285  *  @param x Frame offset from this region's position.
2286  *  @return Snapped frame offset from this region's position.
2287  */
2288 frameoffset_t
2289 MidiRegionView::snap_frame_to_frame (frameoffset_t x)
2290 {
2291         PublicEditor& editor = trackview.editor();
2292
2293         /* x is region relative, convert it to global absolute frames */
2294         framepos_t const session_frame = x + _region->position();
2295
2296         /* try a snap in either direction */
2297         framepos_t frame = session_frame;
2298         editor.snap_to (frame, 0);
2299
2300         /* if we went off the beginning of the region, snap forwards */
2301         if (frame < _region->position ()) {
2302                 frame = session_frame;
2303                 editor.snap_to (frame, 1);
2304         }
2305
2306         /* back to region relative */
2307         return frame - _region->position();
2308 }
2309
2310 double
2311 MidiRegionView::snap_to_pixel(double x)
2312 {
2313         return (double) trackview.editor().frame_to_pixel(snap_pixel_to_frame(x));
2314 }
2315
2316 double
2317 MidiRegionView::get_position_pixels()
2318 {
2319         framepos_t region_frame = get_position();
2320         return trackview.editor().frame_to_pixel(region_frame);
2321 }
2322
2323 double
2324 MidiRegionView::get_end_position_pixels()
2325 {
2326         framepos_t frame = get_position() + get_duration ();
2327         return trackview.editor().frame_to_pixel(frame);
2328 }
2329
2330 framepos_t
2331 MidiRegionView::beats_to_frames(double beats) const
2332 {
2333         return _time_converter.to(beats);
2334 }
2335
2336 double
2337 MidiRegionView::frames_to_beats(framepos_t frames) const
2338 {
2339         return _time_converter.from(frames);
2340 }
2341
2342 void
2343 MidiRegionView::begin_resizing (bool /*at_front*/)
2344 {
2345         _resize_data.clear();
2346
2347         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2348                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
2349
2350                 // only insert CanvasNotes into the map
2351                 if (note) {
2352                         NoteResizeData *resize_data = new NoteResizeData();
2353                         resize_data->canvas_note = note;
2354
2355                         // create a new SimpleRect from the note which will be the resize preview
2356                         SimpleRect *resize_rect = new SimpleRect(
2357                                 *_note_group, note->x1(), note->y1(), note->x2(), note->y2());
2358
2359                         // calculate the colors: get the color settings
2360                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
2361                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
2362                                 128);
2363
2364                         // make the resize preview notes more transparent and bright
2365                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
2366
2367                         // calculate color based on note velocity
2368                         resize_rect->property_fill_color_rgba() = UINT_INTERPOLATE(
2369                                 CanvasNoteEvent::meter_style_fill_color(note->note()->velocity(), note->selected()),
2370                                 fill_color,
2371                                 0.85);
2372
2373                         resize_rect->property_outline_color_rgba() = CanvasNoteEvent::calculate_outline(
2374                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
2375
2376                         resize_data->resize_rect = resize_rect;
2377                         _resize_data.push_back(resize_data);
2378                 }
2379         }
2380 }
2381
2382 /** Update resizing notes while user drags.
2383  * @param primary `primary' note for the drag; ie the one that is used as the reference in non-relative mode.
2384  * @param at_front which end of the note (true == note on, false == note off)
2385  * @param delta_x change in mouse position since the start of the drag
2386  * @param relative true if relative resizing is taking place, false if absolute resizing.  This only makes
2387  * a difference when multiple notes are being resized; in relative mode, each note's length is changed by the
2388  * amount of the drag.  In non-relative mode, all selected notes are set to have the same start or end point
2389  * as the \a primary note.
2390  */
2391 void
2392 MidiRegionView::update_resizing (ArdourCanvas::CanvasNoteEvent* primary, bool at_front, double delta_x, bool relative)
2393 {
2394         bool cursor_set = false;
2395
2396         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2397                 SimpleRect* resize_rect = (*i)->resize_rect;
2398                 CanvasNote* canvas_note = (*i)->canvas_note;
2399                 double current_x;
2400
2401                 if (at_front) {
2402                         if (relative) {
2403                                 current_x = canvas_note->x1() + delta_x;
2404                         } else {
2405                                 current_x = primary->x1() + delta_x;
2406                         }
2407                 } else {
2408                         if (relative) {
2409                                 current_x = canvas_note->x2() + delta_x;
2410                         } else {
2411                                 current_x = primary->x2() + delta_x;
2412                         }
2413                 }
2414
2415                 if (at_front) {
2416                         resize_rect->property_x1() = snap_to_pixel(current_x);
2417                         resize_rect->property_x2() = canvas_note->x2();
2418                 } else {
2419                         resize_rect->property_x2() = snap_to_pixel(current_x);
2420                         resize_rect->property_x1() = canvas_note->x1();
2421                 }
2422
2423                 if (!cursor_set) {
2424                         double beats;
2425
2426                         beats = snap_pixel_to_frame (current_x);
2427                         beats = frames_to_beats (beats);
2428
2429                         double len;
2430
2431                         if (at_front) {
2432                                 if (beats < canvas_note->note()->end_time()) {
2433                                         len = canvas_note->note()->time() - beats;
2434                                         len += canvas_note->note()->length();
2435                                 } else {
2436                                         len = 0;
2437                                 }
2438                         } else {
2439                                 if (beats >= canvas_note->note()->time()) {
2440                                         len = beats - canvas_note->note()->time();
2441                                 } else {
2442                                         len = 0;
2443                                 }
2444                         }
2445
2446                         char buf[16];
2447                         snprintf (buf, sizeof (buf), "%.3g beats", len);
2448                         show_verbose_cursor (buf, 0, 0);
2449
2450                         cursor_set = true;
2451                 }
2452
2453         }
2454 }
2455
2456
2457 /** Finish resizing notes when the user releases the mouse button.
2458  *  Parameters the same as for \a update_resizing().
2459  */
2460 void
2461 MidiRegionView::commit_resizing (ArdourCanvas::CanvasNoteEvent* primary, bool at_front, double delta_x, bool relative)
2462 {
2463         start_note_diff_command (_("resize notes"));
2464
2465         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2466                 CanvasNote*  canvas_note = (*i)->canvas_note;
2467                 SimpleRect*  resize_rect = (*i)->resize_rect;
2468
2469                 /* Get the new x position for this resize, which is in pixels relative
2470                  * to the region position.
2471                  */
2472
2473                 double current_x;
2474
2475                 if (at_front) {
2476                         if (relative) {
2477                                 current_x = canvas_note->x1() + delta_x;
2478                         } else {
2479                                 current_x = primary->x1() + delta_x;
2480                         }
2481                 } else {
2482                         if (relative) {
2483                                 current_x = canvas_note->x2() + delta_x;
2484                         } else {
2485                                 current_x = primary->x2() + delta_x;
2486                         }
2487                 }
2488
2489                 /* Convert that to a frame within the region */
2490                 current_x = snap_pixel_to_frame (current_x) + _region->start ();
2491
2492                 /* and then to beats */
2493                 current_x = frames_to_beats (current_x);
2494
2495                 if (at_front && current_x < canvas_note->note()->end_time()) {
2496                         note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::StartTime, current_x);
2497
2498                         double len = canvas_note->note()->time() - current_x;
2499                         len += canvas_note->note()->length();
2500
2501                         if (len > 0) {
2502                                 /* XXX convert to beats */
2503                                 note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::Length, len);
2504                         }
2505                 }
2506
2507                 if (!at_front) {
2508                         double len = current_x - canvas_note->note()->time();
2509
2510                         if (len > 0) {
2511                                 /* XXX convert to beats */
2512                                 note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::Length, len);
2513                         }
2514                 }
2515
2516                 delete resize_rect;
2517                 delete (*i);
2518         }
2519
2520         _resize_data.clear();
2521         apply_diff();
2522 }
2523
2524 void
2525 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
2526 {
2527         uint8_t new_velocity;
2528
2529         if (relative) {
2530                 new_velocity = event->note()->velocity() + velocity;
2531                 clamp_to_0_127(new_velocity);
2532         } else {
2533                 new_velocity = velocity;
2534         }
2535
2536         event->set_selected (event->selected()); // change color
2537
2538         note_diff_add_change (event, MidiModel::NoteDiffCommand::Velocity, new_velocity);
2539 }
2540
2541 void
2542 MidiRegionView::change_note_note (CanvasNoteEvent* event, int8_t note, bool relative)
2543 {
2544         uint8_t new_note;
2545
2546         if (relative) {
2547                 new_note = event->note()->note() + note;
2548         } else {
2549                 new_note = note;
2550         }
2551
2552         clamp_to_0_127 (new_note);
2553         note_diff_add_change (event, MidiModel::NoteDiffCommand::NoteNumber, new_note);
2554 }
2555
2556 void
2557 MidiRegionView::trim_note (CanvasNoteEvent* event, Evoral::MusicalTime front_delta, Evoral::MusicalTime end_delta)
2558 {
2559         bool change_start = false;
2560         bool change_length = false;
2561         Evoral::MusicalTime new_start = 0;
2562         Evoral::MusicalTime new_length = 0;
2563
2564         /* NOTE: the semantics of the two delta arguments are slightly subtle:
2565
2566            front_delta: if positive - move the start of the note later in time (shortening it)
2567            if negative - move the start of the note earlier in time (lengthening it)
2568
2569            end_delta:   if positive - move the end of the note later in time (lengthening it)
2570            if negative - move the end of the note earlier in time (shortening it)
2571         */
2572
2573         if (front_delta) {
2574                 if (front_delta < 0) {
2575
2576                         if (event->note()->time() < -front_delta) {
2577                                 new_start = 0;
2578                         } else {
2579                                 new_start = event->note()->time() + front_delta; // moves earlier
2580                         }
2581
2582                         /* start moved toward zero, so move the end point out to where it used to be.
2583                            Note that front_delta is negative, so this increases the length.
2584                         */
2585
2586                         new_length = event->note()->length() - front_delta;
2587                         change_start = true;
2588                         change_length = true;
2589
2590                 } else {
2591
2592                         Evoral::MusicalTime new_pos = event->note()->time() + front_delta;
2593
2594                         if (new_pos < event->note()->end_time()) {
2595                                 new_start = event->note()->time() + front_delta;
2596                                 /* start moved toward the end, so move the end point back to where it used to be */
2597                                 new_length = event->note()->length() - front_delta;
2598                                 change_start = true;
2599                                 change_length = true;
2600                         }
2601                 }
2602
2603         }
2604
2605         if (end_delta) {
2606                 bool can_change = true;
2607                 if (end_delta < 0) {
2608                         if (event->note()->length() < -end_delta) {
2609                                 can_change = false;
2610                         }
2611                 }
2612
2613                 if (can_change) {
2614                         new_length = event->note()->length() + end_delta;
2615                         change_length = true;
2616                 }
2617         }
2618
2619         if (change_start) {
2620                 note_diff_add_change (event, MidiModel::NoteDiffCommand::StartTime, new_start);
2621         }
2622
2623         if (change_length) {
2624                 note_diff_add_change (event, MidiModel::NoteDiffCommand::Length, new_length);
2625         }
2626 }
2627
2628 void
2629 MidiRegionView::change_note_channel (CanvasNoteEvent* event, int8_t chn, bool relative)
2630 {
2631         uint8_t new_channel;
2632
2633         if (relative) {
2634                 if (chn < 0.0) {
2635                         if (event->note()->channel() < -chn) {
2636                                 new_channel = 0;
2637                         } else {
2638                                 new_channel = event->note()->channel() + chn;
2639                         }
2640                 } else {
2641                         new_channel = event->note()->channel() + chn;
2642                 }
2643         } else {
2644                 new_channel = (uint8_t) chn;
2645         }
2646
2647         note_diff_add_change (event, MidiModel::NoteDiffCommand::Channel, new_channel);
2648 }
2649
2650 void
2651 MidiRegionView::change_note_time (CanvasNoteEvent* event, Evoral::MusicalTime delta, bool relative)
2652 {
2653         Evoral::MusicalTime new_time;
2654
2655         if (relative) {
2656                 if (delta < 0.0) {
2657                         if (event->note()->time() < -delta) {
2658                                 new_time = 0;
2659                         } else {
2660                                 new_time = event->note()->time() + delta;
2661                         }
2662                 } else {
2663                         new_time = event->note()->time() + delta;
2664                 }
2665         } else {
2666                 new_time = delta;
2667         }
2668
2669         note_diff_add_change (event, MidiModel::NoteDiffCommand::StartTime, new_time);
2670 }
2671
2672 void
2673 MidiRegionView::change_note_length (CanvasNoteEvent* event, Evoral::MusicalTime t)
2674 {
2675         note_diff_add_change (event, MidiModel::NoteDiffCommand::Length, t);
2676 }
2677
2678 void
2679 MidiRegionView::change_velocities (bool up, bool fine, bool allow_smush)
2680 {
2681         int8_t delta;
2682
2683         if (_selection.empty()) {
2684                 return;
2685         }
2686
2687         if (fine) {
2688                 delta = 1;
2689         } else {
2690                 delta = 10;
2691         }
2692
2693         if (!up) {
2694                 delta = -delta;
2695         }
2696
2697         if (!allow_smush) {
2698                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2699                         if ((*i)->note()->velocity() + delta == 0 || (*i)->note()->velocity() + delta == 127) {
2700                                 return;
2701                         }
2702                 }
2703         }
2704
2705         start_note_diff_command (_("change velocities"));
2706
2707         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
2708                 Selection::iterator next = i;
2709                 ++next;
2710                 change_note_velocity (*i, delta, true);
2711                 i = next;
2712         }
2713
2714         apply_diff();
2715
2716         if (!_selection.empty()) {
2717                 char buf[24];
2718                 snprintf (buf, sizeof (buf), "Vel %d",
2719                           (int) (*_selection.begin())->note()->velocity());
2720                 show_verbose_cursor (buf, 10, 10);
2721         }
2722 }
2723
2724
2725 void
2726 MidiRegionView::transpose (bool up, bool fine, bool allow_smush)
2727 {
2728         if (_selection.empty()) {
2729                 return;
2730         }
2731
2732         int8_t delta;
2733
2734         if (fine) {
2735                 delta = 1;
2736         } else {
2737                 delta = 12;
2738         }
2739
2740         if (!up) {
2741                 delta = -delta;
2742         }
2743
2744         if (!allow_smush) {
2745                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2746                         if (!up) {
2747                                 if ((int8_t) (*i)->note()->note() + delta <= 0) {
2748                                         return;
2749                                 }
2750                         } else {
2751                                 if ((int8_t) (*i)->note()->note() + delta > 127) {
2752                                         return;
2753                                 }
2754                         }
2755                 }
2756         }
2757
2758         start_note_diff_command (_("transpose"));
2759
2760         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2761                 Selection::iterator next = i;
2762                 ++next;
2763                 change_note_note (*i, delta, true);
2764                 i = next;
2765         }
2766
2767         apply_diff ();
2768 }
2769
2770 void
2771 MidiRegionView::change_note_lengths (bool fine, bool shorter, Evoral::MusicalTime delta, bool start, bool end)
2772 {
2773         if (delta == 0.0) {
2774                 if (fine) {
2775                         delta = 1.0/128.0;
2776                 } else {
2777                         /* grab the current grid distance */
2778                         bool success;
2779                         delta = trackview.editor().get_grid_type_as_beats (success, _region->position());
2780                         if (!success) {
2781                                 /* XXX cannot get grid type as beats ... should always be possible ... FIX ME */
2782                                 cerr << "Grid type not available as beats - TO BE FIXED\n";
2783                                 return;
2784                         }
2785                 }
2786         }
2787
2788         if (shorter) {
2789                 delta = -delta;
2790         }
2791
2792         start_note_diff_command (_("change note lengths"));
2793
2794         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2795                 Selection::iterator next = i;
2796                 ++next;
2797
2798                 /* note the negation of the delta for start */
2799
2800                 trim_note (*i, (start ? -delta : 0), (end ? delta : 0));
2801                 i = next;
2802         }
2803
2804         apply_diff ();
2805
2806 }
2807
2808 void
2809 MidiRegionView::nudge_notes (bool forward)
2810 {
2811         if (_selection.empty()) {
2812                 return;
2813         }
2814
2815         /* pick a note as the point along the timeline to get the nudge distance.
2816            its not necessarily the earliest note, so we may want to pull the notes out
2817            into a vector and sort before using the first one.
2818         */
2819
2820         framepos_t ref_point = _region->position() + beats_to_frames ((*(_selection.begin()))->note()->time());
2821         framepos_t unused;
2822         framepos_t distance;
2823
2824         if (trackview.editor().snap_mode() == Editing::SnapOff) {
2825
2826                 /* grid is off - use nudge distance */
2827
2828                 distance = trackview.editor().get_nudge_distance (ref_point, unused);
2829
2830         } else {
2831
2832                 /* use grid */
2833
2834                 framepos_t next_pos = ref_point;
2835
2836                 if (forward) {
2837                         if (max_framepos - 1 < next_pos) {
2838                                 next_pos += 1;
2839                         }
2840                 } else {
2841                         if (next_pos == 0) {
2842                                 return;
2843                         }
2844                         next_pos -= 1;
2845                 }
2846
2847                 trackview.editor().snap_to (next_pos, (forward ? 1 : -1), false);
2848                 distance = ref_point - next_pos;
2849         }
2850
2851         if (distance == 0) {
2852                 return;
2853         }
2854
2855         Evoral::MusicalTime delta = frames_to_beats (fabs (distance));
2856
2857         if (!forward) {
2858                 delta = -delta;
2859         }
2860
2861         start_note_diff_command (_("nudge"));
2862
2863         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2864                 Selection::iterator next = i;
2865                 ++next;
2866                 change_note_time (*i, delta, true);
2867                 i = next;
2868         }
2869
2870         apply_diff ();
2871 }
2872
2873 void
2874 MidiRegionView::change_channel(uint8_t channel)
2875 {
2876         start_note_diff_command(_("change channel"));
2877         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2878                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::Channel, channel);
2879         }
2880
2881         apply_diff();
2882 }
2883
2884
2885 void
2886 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
2887 {
2888         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
2889
2890         _pre_enter_cursor = editor->get_canvas_cursor ();
2891
2892         if (_mouse_state == SelectTouchDragging) {
2893                 note_selected (ev, true);
2894         }
2895
2896         show_verbose_cursor (ev->note ());
2897 }
2898
2899 void
2900 MidiRegionView::note_left (ArdourCanvas::CanvasNoteEvent*)
2901 {
2902         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
2903
2904         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2905                 (*i)->hide_velocity ();
2906         }
2907
2908         editor->verbose_cursor()->hide ();
2909
2910         if (_pre_enter_cursor) {
2911                 editor->set_canvas_cursor (_pre_enter_cursor);
2912                 _pre_enter_cursor = 0;
2913         }
2914 }
2915
2916 void
2917 MidiRegionView::patch_entered (ArdourCanvas::CanvasPatchChange* ev)
2918 {
2919         ostringstream s;
2920         s << ((int) ev->patch()->program() + 1) << ":" << (ev->patch()->bank() + 1);
2921         show_verbose_cursor (s.str(), 10, 20);
2922 }
2923
2924 void
2925 MidiRegionView::patch_left (ArdourCanvas::CanvasPatchChange *)
2926 {
2927         trackview.editor().verbose_cursor()->hide ();
2928 }
2929
2930 void
2931 MidiRegionView::note_mouse_position (float x_fraction, float /*y_fraction*/, bool can_set_cursor)
2932 {
2933         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
2934
2935         if (x_fraction > 0.0 && x_fraction < 0.25) {
2936                 editor->set_canvas_cursor (editor->cursors()->left_side_trim);
2937         } else if (x_fraction >= 0.75 && x_fraction < 1.0) {
2938                 editor->set_canvas_cursor (editor->cursors()->right_side_trim);
2939         } else {
2940                 if (_pre_enter_cursor && can_set_cursor) {
2941                         editor->set_canvas_cursor (_pre_enter_cursor);
2942                 }
2943         }
2944 }
2945
2946 void
2947 MidiRegionView::set_frame_color()
2948 {
2949         uint32_t f;
2950
2951         TimeAxisViewItem::set_frame_color ();
2952
2953         if (!frame) {
2954                 return;
2955         }
2956
2957         if (_selected) {
2958                 f = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
2959         } else if (high_enough_for_name) {
2960                 f= ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
2961         } else {
2962                 f = fill_color;
2963         }
2964
2965         if (!rect_visible) {
2966                 f = UINT_RGBA_CHANGE_A (f, 0);
2967         }
2968
2969         frame->property_fill_color_rgba() = f;
2970 }
2971
2972 void
2973 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
2974 {
2975         switch (mode) {
2976         case AllChannels:
2977         case FilterChannels:
2978                 _force_channel = -1;
2979                 break;
2980         case ForceChannel:
2981                 _force_channel = mask;
2982                 mask = 0xFFFF; // Show all notes as active (below)
2983         };
2984
2985         // Update notes for selection
2986         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2987                 (*i)->on_channel_selection_change(mask);
2988         }
2989
2990         _last_channel_selection = mask;
2991
2992         _patch_changes.clear ();
2993         display_patch_changes ();
2994 }
2995
2996 void
2997 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
2998 {
2999         _model_name         = model;
3000         _custom_device_mode = custom_device_mode;
3001         redisplay_model();
3002 }
3003
3004 void
3005 MidiRegionView::cut_copy_clear (Editing::CutCopyOp op)
3006 {
3007         if (_selection.empty()) {
3008                 return;
3009         }
3010
3011         PublicEditor& editor (trackview.editor());
3012
3013         switch (op) {
3014         case Delete:
3015                 /* XXX what to do ? */
3016                 break;
3017         case Cut:
3018         case Copy:
3019                 editor.get_cut_buffer().add (selection_as_cut_buffer());
3020                 break;
3021         default:
3022                 break;
3023         }
3024
3025         if (op != Copy) {
3026
3027                 start_note_diff_command();
3028
3029                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
3030                         switch (op) {
3031                         case Copy:
3032                                 break;
3033                         case Delete:
3034                         case Cut:
3035                         case Clear:
3036                                 note_diff_remove_note (*i);
3037                                 break;
3038                         }
3039                 }
3040
3041                 apply_diff();
3042         }
3043 }
3044
3045 MidiCutBuffer*
3046 MidiRegionView::selection_as_cut_buffer () const
3047 {
3048         Notes notes;
3049
3050         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
3051                 NoteType* n = (*i)->note().get();
3052                 notes.insert (boost::shared_ptr<NoteType> (new NoteType (*n)));
3053         }
3054
3055         MidiCutBuffer* cb = new MidiCutBuffer (trackview.session());
3056         cb->set (notes);
3057
3058         return cb;
3059 }
3060
3061 /** This method handles undo */
3062 void
3063 MidiRegionView::paste (framepos_t pos, float times, const MidiCutBuffer& mcb)
3064 {
3065         if (mcb.empty()) {
3066                 return;
3067         }
3068
3069         DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("MIDI paste @ %1 times %2\n", pos, times));
3070
3071         trackview.session()->begin_reversible_command (_("paste"));
3072
3073         start_note_diff_command (_("paste"));
3074
3075         Evoral::MusicalTime beat_delta;
3076         Evoral::MusicalTime paste_pos_beats;
3077         Evoral::MusicalTime duration;
3078         Evoral::MusicalTime end_point = 0;
3079
3080         duration = (*mcb.notes().rbegin())->end_time() - (*mcb.notes().begin())->time();
3081         paste_pos_beats = frames_to_beats (pos - _region->position());
3082         beat_delta = (*mcb.notes().begin())->time() - paste_pos_beats;
3083         paste_pos_beats = 0;
3084
3085         DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("Paste data spans from %1 to %2 (%3) ; paste pos beats = %4 (based on %5 - %6 ; beat delta = %7\n",
3086                                                        (*mcb.notes().begin())->time(),
3087                                                        (*mcb.notes().rbegin())->end_time(),
3088                                                        duration, pos, _region->position(),
3089                                                        paste_pos_beats, beat_delta));
3090
3091         clear_selection ();
3092
3093         for (int n = 0; n < (int) times; ++n) {
3094
3095                 for (Notes::const_iterator i = mcb.notes().begin(); i != mcb.notes().end(); ++i) {
3096
3097                         boost::shared_ptr<NoteType> copied_note (new NoteType (*((*i).get())));
3098                         copied_note->set_time (paste_pos_beats + copied_note->time() - beat_delta);
3099
3100                         /* make all newly added notes selected */
3101
3102                         note_diff_add_note (copied_note, true);
3103                         end_point = copied_note->end_time();
3104                 }
3105
3106                 paste_pos_beats += duration;
3107         }
3108
3109         /* if we pasted past the current end of the region, extend the region */
3110
3111         framepos_t end_frame = _region->position() + beats_to_frames (end_point);
3112         framepos_t region_end = _region->position() + _region->length() - 1;
3113
3114         if (end_frame > region_end) {
3115
3116                 DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("Paste extended region from %1 to %2\n", region_end, end_frame));
3117
3118                 _region->clear_changes ();
3119                 _region->set_length (end_frame);
3120                 trackview.session()->add_command (new StatefulDiffCommand (_region));
3121         }
3122
3123         apply_diff (true);
3124
3125         trackview.session()->commit_reversible_command ();
3126 }
3127
3128 struct EventNoteTimeEarlyFirstComparator {
3129         bool operator() (CanvasNoteEvent* a, CanvasNoteEvent* b) {
3130                 return a->note()->time() < b->note()->time();
3131         }
3132 };
3133
3134 void
3135 MidiRegionView::time_sort_events ()
3136 {
3137         if (!_sort_needed) {
3138                 return;
3139         }
3140
3141         EventNoteTimeEarlyFirstComparator cmp;
3142         _events.sort (cmp);
3143
3144         _sort_needed = false;
3145 }
3146
3147 void
3148 MidiRegionView::goto_next_note (bool add_to_selection)
3149 {
3150         bool use_next = false;
3151
3152         if (_events.back()->selected()) {
3153                 return;
3154         }
3155
3156         time_sort_events ();
3157
3158         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3159                 if ((*i)->selected()) {
3160                         use_next = true;
3161                         continue;
3162                 } else if (use_next) {
3163                         if (!add_to_selection) {
3164                                 unique_select (*i);
3165                         } else {
3166                                 note_selected (*i, true, false);
3167                         }
3168                         return;
3169                 }
3170         }
3171
3172         /* use the first one */
3173
3174         unique_select (_events.front());
3175
3176 }
3177
3178 void
3179 MidiRegionView::goto_previous_note (bool add_to_selection)
3180 {
3181         bool use_next = false;
3182
3183         if (_events.front()->selected()) {
3184                 return;
3185         }
3186
3187         time_sort_events ();
3188
3189         for (Events::reverse_iterator i = _events.rbegin(); i != _events.rend(); ++i) {
3190                 if ((*i)->selected()) {
3191                         use_next = true;
3192                         continue;
3193                 } else if (use_next) {
3194                         if (!add_to_selection) {
3195                                 unique_select (*i);
3196                         } else {
3197                                 note_selected (*i, true, false);
3198                         }
3199                         return;
3200                 }
3201         }
3202
3203         /* use the last one */
3204
3205         unique_select (*(_events.rbegin()));
3206 }
3207
3208 void
3209 MidiRegionView::selection_as_notelist (Notes& selected, bool allow_all_if_none_selected)
3210 {
3211         bool had_selected = false;
3212
3213         time_sort_events ();
3214
3215         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3216                 if ((*i)->selected()) {
3217                         selected.insert ((*i)->note());
3218                         had_selected = true;
3219                 }
3220         }
3221
3222         if (allow_all_if_none_selected && !had_selected) {
3223                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3224                         selected.insert ((*i)->note());
3225                 }
3226         }
3227 }
3228
3229 void
3230 MidiRegionView::update_ghost_note (double x, double y)
3231 {
3232         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3233
3234         _last_ghost_x = x;
3235         _last_ghost_y = y;
3236
3237         _note_group->w2i (x, y);
3238
3239         PublicEditor& editor = trackview.editor ();
3240
3241         framepos_t const unsnapped_frame = editor.pixel_to_frame (x);
3242
3243         bool success;
3244         Evoral::MusicalTime grid_beats = editor.get_grid_type_as_beats (success, unsnapped_frame);
3245
3246         if (!success) {
3247                 grid_beats = 1;
3248         }
3249
3250         framecnt_t const grid_frames = beats_to_frames (grid_beats);
3251
3252         framepos_t f;
3253
3254         if (unsnapped_frame < grid_frames / 2) {
3255                 f = snap_frame_to_frame (unsnapped_frame);
3256         } else {
3257                 /* snap to half the grid spacing behind the mouse pointer;
3258                    this makes the snapped note time more intuitive
3259                 */
3260                 f = snap_frame_to_frame (unsnapped_frame - grid_frames / 2);
3261         }
3262
3263         double length = frames_to_beats (snap_frame_to_frame (f + grid_frames) - f);
3264
3265         _ghost_note->note()->set_time (frames_to_beats (f + _region->start()));
3266         _ghost_note->note()->set_length (length);
3267         _ghost_note->note()->set_note (midi_stream_view()->y_to_note (y));
3268         _ghost_note->note()->set_channel (mtv->get_channel_for_add ());
3269
3270         /* the ghost note does not appear in ghost regions, so pass false in here */
3271         update_note (_ghost_note, false);
3272
3273         show_verbose_cursor (_ghost_note->note ());
3274 }
3275
3276 void
3277 MidiRegionView::create_ghost_note (double x, double y)
3278 {
3279         delete _ghost_note;
3280         _ghost_note = 0;
3281
3282         boost::shared_ptr<NoteType> g (new NoteType);
3283         _ghost_note = new NoEventCanvasNote (*this, *_note_group, g);
3284         _ghost_note->property_outline_color_rgba() = 0x000000aa;
3285         update_ghost_note (x, y);
3286         _ghost_note->show ();
3287
3288         _last_ghost_x = x;
3289         _last_ghost_y = y;
3290
3291         show_verbose_cursor (_ghost_note->note ());
3292 }
3293
3294 void
3295 MidiRegionView::snap_changed ()
3296 {
3297         if (!_ghost_note) {
3298                 return;
3299         }
3300
3301         create_ghost_note (_last_ghost_x, _last_ghost_y);
3302 }
3303
3304 void
3305 MidiRegionView::drop_down_keys ()
3306 {
3307         _mouse_state = None;
3308 }
3309
3310 void
3311 MidiRegionView::maybe_select_by_position (GdkEventButton* ev, double /*x*/, double y)
3312 {
3313         double note = midi_stream_view()->y_to_note(y);
3314         Events e;
3315         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3316
3317         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
3318
3319         if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
3320                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchGreaterThanOrEqual, (uint8_t) floor (note), chn_mask);
3321         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
3322                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchLessThanOrEqual, (uint8_t) floor (note), chn_mask);
3323         } else {
3324                 return;
3325         }
3326
3327         bool add_mrv_selection = false;
3328
3329         if (_selection.empty()) {
3330                 add_mrv_selection = true;
3331         }
3332
3333         for (Events::iterator i = e.begin(); i != e.end(); ++i) {
3334                 if (_selection.insert (*i).second) {
3335                         (*i)->set_selected (true);
3336                 }
3337         }
3338
3339         if (add_mrv_selection) {
3340                 PublicEditor& editor (trackview.editor());
3341                 editor.get_selection().add (this);
3342         }
3343 }
3344
3345 void
3346 MidiRegionView::color_handler ()
3347 {
3348         RegionView::color_handler ();
3349
3350         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3351                 (*i)->set_selected ((*i)->selected()); // will change color
3352         }
3353
3354         /* XXX probably more to do here */
3355 }
3356
3357 void
3358 MidiRegionView::enable_display (bool yn)
3359 {
3360         RegionView::enable_display (yn);
3361         if (yn) {
3362                 redisplay_model ();
3363         }
3364 }
3365
3366 void
3367 MidiRegionView::show_step_edit_cursor (Evoral::MusicalTime pos)
3368 {
3369         if (_step_edit_cursor == 0) {
3370                 ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
3371
3372                 _step_edit_cursor = new ArdourCanvas::SimpleRect (*group);
3373                 _step_edit_cursor->property_y1() = 0;
3374                 _step_edit_cursor->property_y2() = midi_stream_view()->contents_height();
3375                 _step_edit_cursor->property_fill_color_rgba() = RGBA_TO_UINT (45,0,0,90);
3376                 _step_edit_cursor->property_outline_color_rgba() = RGBA_TO_UINT (85,0,0,90);
3377         }
3378
3379         move_step_edit_cursor (pos);
3380         _step_edit_cursor->show ();
3381 }
3382
3383 void
3384 MidiRegionView::move_step_edit_cursor (Evoral::MusicalTime pos)
3385 {
3386         _step_edit_cursor_position = pos;
3387
3388         if (_step_edit_cursor) {
3389                 double pixel = trackview.editor().frame_to_pixel (beats_to_frames (pos));
3390                 _step_edit_cursor->property_x1() = pixel;
3391                 set_step_edit_cursor_width (_step_edit_cursor_width);
3392         }
3393 }
3394
3395 void
3396 MidiRegionView::hide_step_edit_cursor ()
3397 {
3398         if (_step_edit_cursor) {
3399                 _step_edit_cursor->hide ();
3400         }
3401 }
3402
3403 void
3404 MidiRegionView::set_step_edit_cursor_width (Evoral::MusicalTime beats)
3405 {
3406         _step_edit_cursor_width = beats;
3407
3408         if (_step_edit_cursor) {
3409                 _step_edit_cursor->property_x2() = _step_edit_cursor->property_x1() + trackview.editor().frame_to_pixel (beats_to_frames (beats));
3410         }
3411 }
3412
3413 /** Called when a diskstream on our track has received some data.  Update the view, if applicable.
3414  *  @param buf Data that has been recorded.
3415  *  @param w Source that this data will end up in.
3416  */
3417 void
3418 MidiRegionView::data_recorded (boost::shared_ptr<MidiBuffer> buf, boost::weak_ptr<MidiSource> w)
3419 {
3420         if (!_active_notes) {
3421                 /* we aren't actively being recorded to */
3422                 return;
3423         }
3424
3425         boost::shared_ptr<MidiSource> src = w.lock ();
3426         if (!src || src != midi_region()->midi_source()) {
3427                 /* recorded data was not destined for our source */
3428                 return;
3429         }
3430
3431         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&trackview);
3432         BeatsFramesConverter converter (trackview.session()->tempo_map(), mtv->midi_track()->get_capture_start_frame (0));
3433
3434         framepos_t back = max_framepos;
3435
3436         for (MidiBuffer::iterator i = buf->begin(); i != buf->end(); ++i) {
3437                 Evoral::MIDIEvent<MidiBuffer::TimeType> const ev (*i, false);
3438                 assert (ev.buffer ());
3439
3440                 Evoral::MusicalTime const time_beats = converter.from (ev.time () - converter.origin_b ());
3441
3442                 if (ev.type() == MIDI_CMD_NOTE_ON) {
3443
3444                         boost::shared_ptr<NoteType> note (
3445                                 new NoteType (ev.channel(), time_beats, 0, ev.note(), ev.velocity())
3446                                                           );
3447
3448                         add_note (note, true);
3449
3450                         /* fix up our note range */
3451                         if (ev.note() < _current_range_min) {
3452                                 midi_stream_view()->apply_note_range (ev.note(), _current_range_max, true);
3453                         } else if (ev.note() > _current_range_max) {
3454                                 midi_stream_view()->apply_note_range (_current_range_min, ev.note(), true);
3455                         }
3456
3457                 } else if (ev.type() == MIDI_CMD_NOTE_OFF) {
3458                         resolve_note (ev.note (), time_beats);
3459                 }
3460
3461                 back = ev.time ();
3462         }
3463
3464         midi_stream_view()->check_record_layers (region(), back);
3465 }
3466
3467 void
3468 MidiRegionView::trim_front_starting ()
3469 {
3470         /* Reparent the note group to the region view's parent, so that it doesn't change
3471            when the region view is trimmed.
3472         */
3473         _temporary_note_group = new ArdourCanvas::Group (*group->property_parent ());
3474         _temporary_note_group->move (group->property_x(), group->property_y());
3475         _note_group->reparent (*_temporary_note_group);
3476 }
3477
3478 void
3479 MidiRegionView::trim_front_ending ()
3480 {
3481         _note_group->reparent (*group);
3482         delete _temporary_note_group;
3483         _temporary_note_group = 0;
3484
3485         if (_region->start() < 0) {
3486                 /* Trim drag made start time -ve; fix this */
3487                 midi_region()->fix_negative_start ();
3488         }
3489 }
3490
3491 void
3492 MidiRegionView::edit_patch_change (ArdourCanvas::CanvasPatchChange* pc)
3493 {
3494         PatchChangeDialog d (&_time_converter, trackview.session(), *pc->patch (), Gtk::Stock::APPLY);
3495         if (d.run () != Gtk::RESPONSE_ACCEPT) {
3496                 return;
3497         }
3498
3499         change_patch_change (pc->patch(), d.patch ());
3500 }
3501
3502
3503 void
3504 MidiRegionView::show_verbose_cursor (boost::shared_ptr<NoteType> n) const
3505 {
3506         char buf[24];
3507         snprintf (buf, sizeof (buf), "%s (%d) Chn %d\nVel %d",
3508                   Evoral::midi_note_name (n->note()).c_str(),
3509                   (int) n->note (),
3510                   (int) n->channel() + 1,
3511                   (int) n->velocity());
3512
3513         show_verbose_cursor (buf, 10, 20);
3514 }
3515
3516 void
3517 MidiRegionView::show_verbose_cursor (string const & text, double xoffset, double yoffset) const
3518 {
3519         double wx, wy;
3520
3521         trackview.editor().get_pointer_position (wx, wy);
3522
3523         wx += xoffset;
3524         wy += yoffset;
3525
3526         /* Flip the cursor above the mouse pointer if it would overlap the bottom of the canvas */
3527
3528         double x1, y1, x2, y2;
3529         trackview.editor().verbose_cursor()->canvas_item()->get_bounds (x1, y1, x2, y2);
3530
3531         if ((wy + y2 - y1) > trackview.editor().canvas_height()) {
3532                 wy -= (y2 - y1) + 2 * yoffset;
3533         }
3534
3535         trackview.editor().verbose_cursor()->set (text, wx, wy);
3536         trackview.editor().verbose_cursor()->show ();
3537 }