gtk2_ardour/midi_region_view.cc

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