gtk2_ardour/midi_region_view.cc

   1 /*
   2     Copyright (C) 2001-2011 Paul Davis
   3     Author: David Robillard
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include <cmath>
  21 #include <cassert>
  22 #include <algorithm>
  23 #include <ostream>
  24
  25 #include <gtkmm.h>
  26
  27 #include <gtkmm2ext/gtk_ui.h>
  28
  29 #include <sigc++/signal.h>
  30
  31 #include "pbd/memento_command.h"
  32 #include "pbd/stateful_diff_command.h"
  33
  34 #include "ardour/playlist.h"
  35 #include "ardour/tempo.h"
  36 #include "ardour/midi_region.h"
  37 #include "ardour/midi_source.h"
  38 #include "ardour/midi_model.h"
  39 #include "ardour/midi_patch_manager.h"
  40 #include "ardour/session.h"
  41
  42 #include "evoral/Parameter.hpp"
  43 #include "evoral/MIDIParameters.hpp"
  44 #include "evoral/Control.hpp"
  45 #include "evoral/midi_util.h"
  46
  47 #include "automation_region_view.h"
  48 #include "automation_time_axis.h"
  49 #include "canvas-hit.h"
  50 #include "canvas-note.h"
  51 #include "canvas_patch_change.h"
  52 #include "debug.h"
  53 #include "editor.h"
  54 #include "ghostregion.h"
  55 #include "gui_thread.h"
  56 #include "keyboard.h"
  57 #include "midi_cut_buffer.h"
  58 #include "midi_list_editor.h"
  59 #include "midi_region_view.h"
  60 #include "midi_streamview.h"
  61 #include "midi_time_axis.h"
  62 #include "midi_util.h"
  63 #include "note_player.h"
  64 #include "public_editor.h"
  65 #include "rgb_macros.h"
  66 #include "selection.h"
  67 #include "simpleline.h"
  68 #include "streamview.h"
  69 #include "utils.h"
  70 #include "mouse_cursors.h"
  71 #include "patch_change_dialog.h"
  72 #include "verbose_cursor.h"
  73
  74 #include "i18n.h"
  75
  76 using namespace ARDOUR;
  77 using namespace PBD;
  78 using namespace Editing;
  79 using namespace ArdourCanvas;
  80 using Gtkmm2ext::Keyboard;
  81
  82 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
  83                                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color const & basic_color)
  84         : RegionView (parent, tv, r, spu, basic_color)
  85         , _force_channel(-1)
  86         , _last_channel_selection(0xFFFF)
  87         , _current_range_min(0)
  88         , _current_range_max(0)
  89         , _model_name(string())
  90         , _custom_device_mode(string())
  91         , _active_notes(0)
  92         , _note_group(new ArdourCanvas::Group(*group))
  93         , _note_diff_command (0)
  94         , _ghost_note(0)
  95         , _drag_rect (0)
  96         , _step_edit_cursor (0)
  97         , _step_edit_cursor_width (1.0)
  98         , _step_edit_cursor_position (0.0)
  99         , _channel_selection_scoped_note (0)
 100         , _temporary_note_group (0)
 101         , _mouse_state(None)
 102         , _pressed_button(0)
 103         , _sort_needed (true)
 104         , _optimization_iterator (_events.end())
 105         , _list_editor (0)
 106         , _no_sound_notes (false)
 107         , _last_event_x (0)
 108         , _last_event_y (0)
 109         , _pre_enter_cursor (0)
 110 {
 111         _note_group->raise_to_top();
 112         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 113
 114         connect_to_diskstream ();
 115 }
 116
 117 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
 118                                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color,
 119                                 TimeAxisViewItem::Visibility visibility)
 120         : RegionView (parent, tv, r, spu, basic_color, false, visibility)
 121         , _force_channel(-1)
 122         , _last_channel_selection(0xFFFF)
 123         , _model_name(string())
 124         , _custom_device_mode(string())
 125         , _active_notes(0)
 126         , _note_group(new ArdourCanvas::Group(*parent))
 127         , _note_diff_command (0)
 128         , _ghost_note(0)
 129         , _drag_rect (0)
 130         , _step_edit_cursor (0)
 131         , _step_edit_cursor_width (1.0)
 132         , _step_edit_cursor_position (0.0)
 133         , _channel_selection_scoped_note (0)
 134         , _temporary_note_group (0)
 135         , _mouse_state(None)
 136         , _pressed_button(0)
 137         , _sort_needed (true)
 138         , _optimization_iterator (_events.end())
 139         , _list_editor (0)
 140         , _no_sound_notes (false)
 141         , _last_event_x (0)
 142         , _last_event_y (0)
 143 {
 144         _note_group->raise_to_top();
 145         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 146
 147         connect_to_diskstream ();
 148 }
 149
 150 MidiRegionView::MidiRegionView (const MidiRegionView& other)
 151         : sigc::trackable(other)
 152         , RegionView (other)
 153         , _force_channel(-1)
 154         , _last_channel_selection(0xFFFF)
 155         , _model_name(string())
 156         , _custom_device_mode(string())
 157         , _active_notes(0)
 158         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 159         , _note_diff_command (0)
 160         , _ghost_note(0)
 161         , _drag_rect (0)
 162         , _step_edit_cursor (0)
 163         , _step_edit_cursor_width (1.0)
 164         , _step_edit_cursor_position (0.0)
 165         , _channel_selection_scoped_note (0)
 166         , _temporary_note_group (0)
 167         , _mouse_state(None)
 168         , _pressed_button(0)
 169         , _sort_needed (true)
 170         , _optimization_iterator (_events.end())
 171         , _list_editor (0)
 172         , _no_sound_notes (false)
 173         , _last_event_x (0)
 174         , _last_event_y (0)
 175 {
 176         Gdk::Color c;
 177         int r,g,b,a;
 178
 179         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 180         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 181
 182         init (c, false);
 183 }
 184
 185 MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<MidiRegion> region)
 186         : RegionView (other, boost::shared_ptr<Region> (region))
 187         , _force_channel(-1)
 188         , _last_channel_selection(0xFFFF)
 189         , _model_name(string())
 190         , _custom_device_mode(string())
 191         , _active_notes(0)
 192         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 193         , _note_diff_command (0)
 194         , _ghost_note(0)
 195         , _drag_rect (0)
 196         , _step_edit_cursor (0)
 197         , _step_edit_cursor_width (1.0)
 198         , _step_edit_cursor_position (0.0)
 199         , _channel_selection_scoped_note (0)
 200         , _temporary_note_group (0)
 201         , _mouse_state(None)
 202         , _pressed_button(0)
 203         , _sort_needed (true)
 204         , _optimization_iterator (_events.end())
 205         , _list_editor (0)
 206         , _no_sound_notes (false)
 207         , _last_event_x (0)
 208         , _last_event_y (0)
 209 {
 210         Gdk::Color c;
 211         int r,g,b,a;
 212
 213         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 214         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 215
 216         init (c, true);
 217 }
 218
 219 void
 220 MidiRegionView::init (Gdk::Color const & basic_color, bool wfd)
 221 {
 222         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 223
 224         CanvasNoteEvent::CanvasNoteEventDeleted.connect (note_delete_connection, MISSING_INVALIDATOR,
 225                                                          ui_bind (&MidiRegionView::maybe_remove_deleted_note_from_selection, this, _1),
 226                                                          gui_context());
 227
 228         if (wfd) {
 229                 midi_region()->midi_source(0)->load_model();
 230         }
 231
 232         _model = midi_region()->midi_source(0)->model();
 233         _enable_display = false;
 234
 235         RegionView::init (basic_color, false);
 236
 237         compute_colors (basic_color);
 238
 239         set_height (trackview.current_height());
 240
 241         region_muted ();
 242         region_sync_changed ();
 243         region_resized (ARDOUR::bounds_change);
 244         region_locked ();
 245
 246         reset_width_dependent_items (_pixel_width);
 247
 248         set_colors ();
 249
 250         _enable_display = true;
 251         if (_model) {
 252                 if (wfd) {
 253                         display_model (_model);
 254                 }
 255         }
 256
 257         group->raise_to_top();
 258         group->signal_event().connect(
 259                 sigc::mem_fun(this, &MidiRegionView::canvas_event), false);
 260
 261         midi_view()->signal_channel_mode_changed().connect(
 262                 sigc::mem_fun(this, &MidiRegionView::midi_channel_mode_changed));
 263
 264         midi_view()->signal_midi_patch_settings_changed().connect(
 265                 sigc::mem_fun(this, &MidiRegionView::midi_patch_settings_changed));
 266
 267         trackview.editor().SnapChanged.connect(snap_changed_connection, invalidator(*this),
 268                                                ui_bind(&MidiRegionView::snap_changed, this),
 269                                                gui_context());
 270
 271         connect_to_diskstream ();
 272 }
 273
 274 void
 275 MidiRegionView::connect_to_diskstream ()
 276 {
 277         midi_view()->midi_track()->DataRecorded.connect(
 278                 *this, invalidator(*this),
 279                 ui_bind(&MidiRegionView::data_recorded, this, _1, _2),
 280                 gui_context());
 281 }
 282
 283 bool
 284 MidiRegionView::canvas_event(GdkEvent* ev)
 285 {
 286         switch (ev->type) {
 287         case GDK_ENTER_NOTIFY:
 288         case GDK_LEAVE_NOTIFY:
 289                 _last_event_x = ev->crossing.x;
 290                 _last_event_y = ev->crossing.y;
 291                 break;
 292         case GDK_MOTION_NOTIFY:
 293                 _last_event_x = ev->motion.x;
 294                 _last_event_y = ev->motion.y;
 295                 break;
 296         default:
 297                 break;
 298         }
 299
 300         if (!trackview.editor().internal_editing()) {
 301                 return false;
 302         }
 303
 304         switch (ev->type) {
 305         case GDK_SCROLL:
 306                 return scroll (&ev->scroll);
 307
 308         case GDK_KEY_PRESS:
 309                 return key_press (&ev->key);
 310
 311         case GDK_KEY_RELEASE:
 312                 return key_release (&ev->key);
 313
 314         case GDK_BUTTON_PRESS:
 315                 return button_press (&ev->button);
 316
 317         case GDK_2BUTTON_PRESS:
 318                 return true;
 319
 320         case GDK_BUTTON_RELEASE:
 321                 return button_release (&ev->button);
 322
 323         case GDK_ENTER_NOTIFY:
 324                 return enter_notify (&ev->crossing);
 325
 326         case GDK_LEAVE_NOTIFY:
 327                 return leave_notify (&ev->crossing);
 328
 329         case GDK_MOTION_NOTIFY:
 330                 return motion (&ev->motion);
 331
 332         default:
 333                 break;
 334         }
 335
 336         return false;
 337 }
 338
 339 void
 340 MidiRegionView::remove_ghost_note ()
 341 {
 342         delete _ghost_note;
 343         _ghost_note = 0;
 344 }
 345
 346 bool
 347 MidiRegionView::enter_notify (GdkEventCrossing* ev)
 348 {
 349         trackview.editor().MouseModeChanged.connect (
 350                 _mouse_mode_connection, invalidator (*this), ui_bind (&MidiRegionView::mouse_mode_changed, this), gui_context ()
 351                                                      );
 352
 353         Keyboard::magic_widget_grab_focus();
 354         group->grab_focus();
 355
 356         if (trackview.editor().current_mouse_mode() == MouseRange) {
 357                 create_ghost_note (ev->x, ev->y);
 358         }
 359
 360         return false;
 361 }
 362
 363 bool
 364 MidiRegionView::leave_notify (GdkEventCrossing*)
 365 {
 366         _mouse_mode_connection.disconnect ();
 367
 368         trackview.editor().verbose_cursor()->hide ();
 369         remove_ghost_note ();
 370         return false;
 371 }
 372
 373 void
 374 MidiRegionView::mouse_mode_changed ()
 375 {
 376         if (trackview.editor().current_mouse_mode() == MouseRange && trackview.editor().internal_editing()) {
 377                 create_ghost_note (_last_event_x, _last_event_y);
 378         } else {
 379                 remove_ghost_note ();
 380                 trackview.editor().verbose_cursor()->hide ();
 381         }
 382 }
 383
 384 bool
 385 MidiRegionView::button_press (GdkEventButton* ev)
 386 {
 387         if (ev->button != 1) {
 388                 return false;
 389         }
 390
 391         _last_x = ev->x;
 392         _last_y = ev->y;
 393
 394         group->w2i (_last_x, _last_y);
 395
 396         if (_mouse_state != SelectTouchDragging) {
 397
 398                 _pressed_button = ev->button;
 399                 _mouse_state = Pressed;
 400
 401                 return true;
 402         }
 403
 404         _pressed_button = ev->button;
 405
 406         return true;
 407 }
 408
 409 bool
 410 MidiRegionView::button_release (GdkEventButton* ev)
 411 {
 412         double event_x, event_y;
 413         framepos_t event_frame = 0;
 414
 415         if (ev->button != 1) {
 416                 return false;
 417         }
 418
 419         event_x = ev->x;
 420         event_y = ev->y;
 421
 422         group->w2i(event_x, event_y);
 423         group->ungrab(ev->time);
 424
 425         event_frame = trackview.editor().pixel_to_frame(event_x);
 426
 427         switch (_mouse_state) {
 428         case Pressed: // Clicked
 429
 430                 switch (trackview.editor().current_mouse_mode()) {
 431                 case MouseObject:
 432                 case MouseTimeFX:
 433                         {
 434                                 clear_selection();
 435
 436                                 if (Keyboard::is_insert_note_event(ev)){
 437
 438                                         double event_x, event_y;
 439
 440                                         event_x = ev->x;
 441                                         event_y = ev->y;
 442                                         group->w2i(event_x, event_y);
 443
 444                                         bool success;
 445                                         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, trackview.editor().pixel_to_frame (event_x));
 446
 447                                         if (!success) {
 448                                                 beats = 1;
 449                                         }
 450
 451                                         create_note_at (event_x, event_y, beats, true);
 452                                 }
 453
 454                                 break;
 455                         }
 456                 case MouseRange:
 457                         {
 458                                 bool success;
 459                                 Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, trackview.editor().pixel_to_frame (event_x));
 460
 461                                 if (!success) {
 462                                         beats = 1;
 463                                 }
 464
 465                                 create_note_at (event_x, event_y, beats, true);
 466
 467                                 break;
 468                         }
 469                 default:
 470                         break;
 471                 }
 472
 473                 _mouse_state = None;
 474                 break;
 475
 476         case SelectRectDragging: // Select drag done
 477
 478                 _mouse_state = None;
 479                 delete _drag_rect;
 480                 _drag_rect = 0;
 481                 break;
 482
 483         case AddDragging: // Add drag done
 484
 485                 _mouse_state = None;
 486
 487                 if (Keyboard::is_insert_note_event(ev) || trackview.editor().current_mouse_mode() == MouseRange){
 488
 489                         if (_drag_rect->property_x2() > _drag_rect->property_x1() + 2) {
 490
 491                                 const double x  = _drag_rect->property_x1();
 492                                 const double length = trackview.editor().pixel_to_frame (_drag_rect->property_x2() - _drag_rect->property_x1());
 493
 494                                 create_note_at (x, _drag_rect->property_y1(), frames_to_beats(length), true);
 495                         }
 496                 }
 497
 498                 delete _drag_rect;
 499                 _drag_rect = 0;
 500
 501                 create_ghost_note (ev->x, ev->y);
 502
 503         default:
 504                 break;
 505         }
 506
 507         return false;
 508 }
 509
 510 bool
 511 MidiRegionView::motion (GdkEventMotion* ev)
 512 {
 513         double event_x, event_y;
 514         framepos_t event_frame = 0;
 515
 516         event_x = ev->x;
 517         event_y = ev->y;
 518         group->w2i(event_x, event_y);
 519
 520         // convert event_x to global frame
 521         event_frame = snap_pixel_to_frame (event_x);
 522
 523         if (!_ghost_note && trackview.editor().current_mouse_mode() != MouseRange
 524             && Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())
 525             && _mouse_state != AddDragging){
 526
 527                 create_ghost_note (ev->x, ev->y);
 528         }
 529         else if (_ghost_note && trackview.editor().current_mouse_mode() != MouseRange
 530                  && Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())){
 531
 532                 update_ghost_note (ev->x, ev->y);
 533         }
 534         else if (_ghost_note && trackview.editor().current_mouse_mode() != MouseRange){
 535
 536                 delete _ghost_note;
 537                 _ghost_note = 0;
 538
 539                 trackview.editor().verbose_cursor()->hide ();
 540         }
 541         else if (_ghost_note && trackview.editor().current_mouse_mode() == MouseRange) {
 542                 update_ghost_note (ev->x, ev->y);
 543         }
 544
 545         /* any motion immediately hides velocity text that may have been visible */
 546
 547         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 548                 (*i)->hide_velocity ();
 549         }
 550
 551         switch (_mouse_state) {
 552         case Pressed: // Maybe start a drag, if we've moved a bit
 553
 554                 if (fabs (event_x - _last_x) < 1 && fabs (event_y - _last_y) < 1) {
 555                         /* no appreciable movement since the button was pressed */
 556                         return false;
 557                 }
 558
 559                 // Select drag start
 560                 if (_pressed_button == 1 && trackview.editor().current_mouse_mode() == MouseObject
 561                     && !Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())) {
 562
 563                         group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 564                                     Gdk::Cursor(Gdk::FLEUR), ev->time);
 565
 566                         _last_x = event_x;
 567                         _last_y = event_y;
 568                         _drag_start_x = event_x;
 569                         _drag_start_y = event_y;
 570
 571                         _drag_rect = new ArdourCanvas::SimpleRect(*group);
 572                         _drag_rect->property_x1() = event_x;
 573                         _drag_rect->property_y1() = event_y;
 574                         _drag_rect->property_x2() = event_x;
 575                         _drag_rect->property_y2() = event_y;
 576                         _drag_rect->property_outline_what() = 0xFF;
 577                         _drag_rect->property_outline_color_rgba()
 578                                 = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 579                         _drag_rect->property_fill_color_rgba()
 580                                 = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 581
 582                         _mouse_state = SelectRectDragging;
 583                         return true;
 584
 585                         // Add note drag start
 586                 } else if (trackview.editor().internal_editing()) {
 587
 588                         delete _ghost_note;
 589                         _ghost_note = 0;
 590
 591                         group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 592                                     Gdk::Cursor(Gdk::FLEUR), ev->time);
 593
 594                         _last_x = event_x;
 595                         _last_y = event_y;
 596                         _drag_start_x = event_x;
 597                         _drag_start_y = event_y;
 598
 599                         _drag_rect = new ArdourCanvas::SimpleRect(*group);
 600                         _drag_rect->property_x1() = trackview.editor().frame_to_pixel(event_frame);
 601
 602                         _drag_rect->property_y1() = midi_stream_view()->note_to_y(
 603                                 midi_stream_view()->y_to_note(event_y));
 604                         _drag_rect->property_x2() = trackview.editor().frame_to_pixel(event_frame);
 605                         _drag_rect->property_y2() = _drag_rect->property_y1()
 606                                 + floor(midi_stream_view()->note_height());
 607                         _drag_rect->property_outline_what() = 0xFF;
 608                         _drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 609                         _drag_rect->property_fill_color_rgba()    = 0xFFFFFF66;
 610
 611                         _mouse_state = AddDragging;
 612
 613                         if (_ghost_note){
 614
 615                                 delete _ghost_note;
 616                                 _ghost_note = 0;
 617
 618                                 trackview.editor().verbose_cursor()->hide ();
 619                         }
 620
 621                         return true;
 622                 }
 623
 624                 return false;
 625
 626         case SelectRectDragging: // Select drag motion
 627         case AddDragging: // Add note drag motion
 628
 629                 if (ev->is_hint) {
 630                         int t_x;
 631                         int t_y;
 632                         GdkModifierType state;
 633                         gdk_window_get_pointer(ev->window, &t_x, &t_y, &state);
 634                         event_x = t_x;
 635                         event_y = t_y;
 636                 }
 637
 638                 if (_mouse_state == AddDragging){
 639                         event_x = trackview.editor().frame_to_pixel(event_frame);
 640                 }
 641
 642                 if (_drag_rect) {
 643
 644                         if (event_x > _drag_start_x){
 645                                 _drag_rect->property_x2() = event_x;
 646                         }
 647                         else {
 648                                 _drag_rect->property_x1() = event_x;
 649                         }
 650                 }
 651
 652                 if (_drag_rect && _mouse_state == SelectRectDragging) {
 653
 654                         if (event_y > _drag_start_y){
 655                                 _drag_rect->property_y2() = event_y;
 656                         }
 657                         else {
 658                                 _drag_rect->property_y1() = event_y;
 659                         }
 660
 661                         update_drag_selection(_drag_start_x, event_x, _drag_start_y, event_y);
 662                 }
 663
 664                 _last_x = event_x;
 665                 _last_y = event_y;
 666
 667         case SelectTouchDragging:
 668                 return false;
 669
 670         default:
 671                 break;
 672         }
 673
 674         return false;
 675 }
 676
 677
 678 bool
 679 MidiRegionView::scroll (GdkEventScroll* ev)
 680 {
 681         if (_selection.empty()) {
 682                 return false;
 683         }
 684
 685         trackview.editor().verbose_cursor()->hide ();
 686
 687         bool fine = !Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier);
 688
 689         if (ev->direction == GDK_SCROLL_UP) {
 690                 change_velocities (true, fine, false);
 691         } else if (ev->direction == GDK_SCROLL_DOWN) {
 692                 change_velocities (false, fine, false);
 693         }
 694         return true;
 695 }
 696
 697 bool
 698 MidiRegionView::key_press (GdkEventKey* ev)
 699 {
 700         /* since GTK bindings are generally activated on press, and since
 701            detectable auto-repeat is the name of the game and only sends
 702            repeated presses, carry out key actions at key press, not release.
 703         */
 704
 705         if (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R){
 706                 _mouse_state = SelectTouchDragging;
 707                 return true;
 708
 709         } else if (ev->keyval == GDK_Escape) {
 710                 clear_selection();
 711                 _mouse_state = None;
 712
 713         } else if (ev->keyval == GDK_comma || ev->keyval == GDK_period) {
 714
 715                 bool start = (ev->keyval == GDK_comma);
 716                 bool end = (ev->keyval == GDK_period);
 717                 bool shorter = Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier);
 718                 bool fine = Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 719
 720                 change_note_lengths (fine, shorter, 0.0, start, end);
 721
 722                 return true;
 723
 724         } else if (ev->keyval == GDK_Delete) {
 725
 726                 delete_selection();
 727                 return true;
 728
 729         } else if (ev->keyval == GDK_Tab) {
 730
 731                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 732                         goto_previous_note ();
 733                 } else {
 734                         goto_next_note ();
 735                 }
 736                 return true;
 737
 738         } else if (ev->keyval == GDK_Up) {
 739
 740                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 741                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 742
 743                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 744                         change_velocities (true, fine, allow_smush);
 745                 } else {
 746                         transpose (true, fine, allow_smush);
 747                 }
 748                 return true;
 749
 750         } else if (ev->keyval == GDK_Down) {
 751
 752                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 753                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 754
 755                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 756                         change_velocities (false, fine, allow_smush);
 757                 } else {
 758                         transpose (false, fine, allow_smush);
 759                 }
 760                 return true;
 761
 762         } else if (ev->keyval == GDK_Left) {
 763
 764                 nudge_notes (false);
 765                 return true;
 766
 767         } else if (ev->keyval == GDK_Right) {
 768
 769                 nudge_notes (true);
 770                 return true;
 771
 772         } else if (ev->keyval == GDK_Control_L) {
 773                 return true;
 774
 775         }
 776
 777         return false;
 778 }
 779
 780 bool
 781 MidiRegionView::key_release (GdkEventKey* ev)
 782 {
 783         if (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R) {
 784                 _mouse_state = None;
 785                 return true;
 786         }
 787         return false;
 788 }
 789
 790 void
 791 MidiRegionView::show_list_editor ()
 792 {
 793         if (!_list_editor) {
 794                 _list_editor = new MidiListEditor (trackview.session(), midi_region());
 795         }
 796         _list_editor->present ();
 797 }
 798
 799 /** Add a note to the model, and the view, at a canvas (click) coordinate.
 800  * \param x horizontal position in pixels
 801  * \param y vertical position in pixels
 802  * \param length duration of the note in beats, which will be snapped to the grid
 803  * \param sh true to make the note 1 frame shorter than the snapped version of \a length.
 804  */
 805 void
 806 MidiRegionView::create_note_at(double x, double y, double length, bool sh)
 807 {
 808         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 809         MidiStreamView* const view = mtv->midi_view();
 810
 811         double note = view->y_to_note(y);
 812
 813         assert(note >= 0.0);
 814         assert(note <= 127.0);
 815
 816         // Start of note in frames relative to region start
 817         framepos_t const start_frames = snap_pixel_to_frame (x);
 818         assert(start_frames >= 0);
 819
 820         // Snap length
 821         length = frames_to_beats(
 822                 snap_frame_to_frame(start_frames + beats_to_frames(length)) - start_frames);
 823
 824         assert (length != 0);
 825
 826         if (sh) {
 827                 length = frames_to_beats (beats_to_frames (length) - 1);
 828         }
 829
 830         const boost::shared_ptr<NoteType> new_note (new NoteType (mtv->get_channel_for_add (),
 831                                                                   frames_to_beats(start_frames + _region->start()), length,
 832                                                                   (uint8_t)note, 0x40));
 833
 834         if (_model->contains (new_note)) {
 835                 return;
 836         }
 837
 838         view->update_note_range(new_note->note());
 839
 840         MidiModel::NoteDiffCommand* cmd = _model->new_note_diff_command("add note");
 841         cmd->add (new_note);
 842         _model->apply_command(*trackview.session(), cmd);
 843
 844         play_midi_note (new_note);
 845 }
 846
 847 void
 848 MidiRegionView::clear_events()
 849 {
 850         clear_selection();
 851
 852         MidiGhostRegion* gr;
 853         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 854                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 855                         gr->clear_events();
 856                 }
 857         }
 858
 859         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 860                 delete *i;
 861         }
 862
 863         _events.clear();
 864         _patch_changes.clear();
 865         _sys_exes.clear();
 866         _optimization_iterator = _events.end();
 867 }
 868
 869 void
 870 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 871 {
 872         _model = model;
 873
 874         content_connection.disconnect ();
 875         _model->ContentsChanged.connect (content_connection, invalidator (*this), boost::bind (&MidiRegionView::redisplay_model, this), gui_context());
 876
 877         clear_events ();
 878
 879         if (_enable_display) {
 880                 redisplay_model();
 881         }
 882 }
 883
 884 void
 885 MidiRegionView::start_note_diff_command (string name)
 886 {
 887         if (!_note_diff_command) {
 888                 _note_diff_command = _model->new_note_diff_command (name);
 889         }
 890 }
 891
 892 void
 893 MidiRegionView::note_diff_add_note (const boost::shared_ptr<NoteType> note, bool selected, bool show_velocity)
 894 {
 895         if (_note_diff_command) {
 896                 _note_diff_command->add (note);
 897         }
 898         if (selected) {
 899                 _marked_for_selection.insert(note);
 900         }
 901         if (show_velocity) {
 902                 _marked_for_velocity.insert(note);
 903         }
 904 }
 905
 906 void
 907 MidiRegionView::note_diff_remove_note (ArdourCanvas::CanvasNoteEvent* ev)
 908 {
 909         if (_note_diff_command && ev->note()) {
 910                 _note_diff_command->remove(ev->note());
 911         }
 912 }
 913
 914 void
 915 MidiRegionView::note_diff_add_change (ArdourCanvas::CanvasNoteEvent* ev,
 916                                       MidiModel::NoteDiffCommand::Property property,
 917                                       uint8_t val)
 918 {
 919         if (_note_diff_command) {
 920                 _note_diff_command->change (ev->note(), property, val);
 921         }
 922 }
 923
 924 void
 925 MidiRegionView::note_diff_add_change (ArdourCanvas::CanvasNoteEvent* ev,
 926                                       MidiModel::NoteDiffCommand::Property property,
 927                                       Evoral::MusicalTime val)
 928 {
 929         if (_note_diff_command) {
 930                 _note_diff_command->change (ev->note(), property, val);
 931         }
 932 }
 933
 934 void
 935 MidiRegionView::apply_diff (bool as_subcommand)
 936 {
 937         bool add_or_remove;
 938
 939         if (!_note_diff_command) {
 940                 return;
 941         }
 942
 943         if ((add_or_remove = _note_diff_command->adds_or_removes())) {
 944                 // Mark all selected notes for selection when model reloads
 945                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 946                         _marked_for_selection.insert((*i)->note());
 947                 }
 948         }
 949
 950         if (as_subcommand) {
 951                 _model->apply_command_as_subcommand (*trackview.session(), _note_diff_command);
 952         } else {
 953                 _model->apply_command (*trackview.session(), _note_diff_command);
 954         }
 955
 956         _note_diff_command = 0;
 957         midi_view()->midi_track()->playlist_modified();
 958
 959         if (add_or_remove) {
 960                 _marked_for_selection.clear();
 961         }
 962
 963         _marked_for_velocity.clear();
 964 }
 965
 966 void
 967 MidiRegionView::abort_command()
 968 {
 969         delete _note_diff_command;
 970         _note_diff_command = 0;
 971         clear_selection();
 972 }
 973
 974 CanvasNoteEvent*
 975 MidiRegionView::find_canvas_note (boost::shared_ptr<NoteType> note)
 976 {
 977         if (_optimization_iterator != _events.end()) {
 978                 ++_optimization_iterator;
 979         }
 980
 981         if (_optimization_iterator != _events.end() && (*_optimization_iterator)->note() == note) {
 982                 return *_optimization_iterator;
 983         }
 984
 985         for (_optimization_iterator = _events.begin(); _optimization_iterator != _events.end(); ++_optimization_iterator) {
 986                 if ((*_optimization_iterator)->note() == note) {
 987                         return *_optimization_iterator;
 988                 }
 989         }
 990
 991         return 0;
 992 }
 993
 994 void
 995 MidiRegionView::get_events (Events& e, Evoral::Sequence<Evoral::MusicalTime>::NoteOperator op, uint8_t val, int chan_mask)
 996 {
 997         MidiModel::Notes notes;
 998         _model->get_notes (notes, op, val, chan_mask);
 999
1000         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1001                 CanvasNoteEvent* cne = find_canvas_note (*n);
1002                 if (cne) {
1003                         e.push_back (cne);
1004                 }
1005         }
1006 }
1007
1008 void
1009 MidiRegionView::redisplay_model()
1010 {
1011         // Don't redisplay the model if we're currently recording and displaying that
1012         if (_active_notes) {
1013                 return;
1014         }
1015
1016         if (!_model) {
1017                 return;
1018         }
1019
1020         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1021                 (*i)->invalidate ();
1022         }
1023
1024         MidiModel::ReadLock lock(_model->read_lock());
1025
1026         MidiModel::Notes& notes (_model->notes());
1027         _optimization_iterator = _events.begin();
1028
1029         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1030
1031                 boost::shared_ptr<NoteType> note (*n);
1032                 CanvasNoteEvent* cne;
1033                 bool visible;
1034
1035                 if (note_in_region_range (note, visible)) {
1036
1037                         if ((cne = find_canvas_note (note)) != 0) {
1038
1039                                 cne->validate ();
1040
1041                                 CanvasNote* cn;
1042                                 CanvasHit* ch;
1043
1044                                 if ((cn = dynamic_cast<CanvasNote*>(cne)) != 0) {
1045                                         update_note (cn);
1046                                 } else if ((ch = dynamic_cast<CanvasHit*>(cne)) != 0) {
1047                                         update_hit (ch);
1048                                 }
1049
1050                                 if (visible) {
1051                                         cne->show ();
1052                                 } else {
1053                                         cne->hide ();
1054                                 }
1055
1056                         } else {
1057
1058                                 add_note (note, visible);
1059                         }
1060
1061                 } else {
1062
1063                         if ((cne = find_canvas_note (note)) != 0) {
1064                                 cne->validate ();
1065                                 cne->hide ();
1066                         }
1067                 }
1068         }
1069
1070
1071         /* remove note items that are no longer valid */
1072
1073         for (Events::iterator i = _events.begin(); i != _events.end(); ) {
1074                 if (!(*i)->valid ()) {
1075                         delete *i;
1076                         i = _events.erase (i);
1077                 } else {
1078                         ++i;
1079                 }
1080         }
1081
1082         _patch_changes.clear();
1083         _sys_exes.clear();
1084
1085         display_sysexes();
1086         display_patch_changes ();
1087
1088         _marked_for_selection.clear ();
1089         _marked_for_velocity.clear ();
1090
1091         /* we may have caused _events to contain things out of order (e.g. if a note
1092            moved earlier or later). we don't generally need them in time order, but
1093            make a note that a sort is required for those cases that require it.
1094         */
1095
1096         _sort_needed = true;
1097 }
1098
1099 void
1100 MidiRegionView::display_patch_changes ()
1101 {
1102         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1103         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
1104
1105         for (uint8_t i = 0; i < 16; ++i) {
1106                 if (chn_mask & (1<<i)) {
1107                         display_patch_changes_on_channel (i);
1108                 }
1109         }
1110 }
1111
1112 void
1113 MidiRegionView::display_patch_changes_on_channel (uint8_t channel)
1114 {
1115         for (MidiModel::PatchChanges::const_iterator i = _model->patch_changes().begin(); i != _model->patch_changes().end(); ++i) {
1116
1117                 if ((*i)->channel() != channel) {
1118                         continue;
1119                 }
1120
1121                 MIDI::Name::PatchPrimaryKey patch_key ((*i)->bank_msb (), (*i)->bank_lsb (), (*i)->program ());
1122
1123                 boost::shared_ptr<MIDI::Name::Patch> patch =
1124                         MIDI::Name::MidiPatchManager::instance().find_patch(
1125                                 _model_name, _custom_device_mode, channel, patch_key);
1126
1127                 if (patch != 0) {
1128                         add_canvas_patch_change (*i, patch->name());
1129                 } else {
1130                         char buf[16];
1131                         /* program and bank numbers are zero-based: convert to one-based */
1132                         snprintf (buf, 16, "%d\n%d", (*i)->program() + 1, (*i)->bank() + 1);
1133                         add_canvas_patch_change (*i, buf);
1134                 }
1135         }
1136 }
1137
1138 void
1139 MidiRegionView::display_sysexes()
1140 {
1141         for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
1142                 Evoral::MusicalTime time = (*i)->time();
1143                 assert(time >= 0);
1144
1145                 ostringstream str;
1146                 str << hex;
1147                 for (uint32_t b = 0; b < (*i)->size(); ++b) {
1148                         str << int((*i)->buffer()[b]);
1149                         if (b != (*i)->size() -1) {
1150                                 str << " ";
1151                         }
1152                 }
1153                 string text = str.str();
1154
1155                 const double x = trackview.editor().frame_to_pixel(beats_to_frames(time));
1156
1157                 double height = midi_stream_view()->contents_height();
1158
1159                 boost::shared_ptr<CanvasSysEx> sysex = boost::shared_ptr<CanvasSysEx>(
1160                         new CanvasSysEx(*this, *_note_group, text, height, x, 1.0));
1161
1162                 // Show unless patch change is beyond the region bounds
1163                 if (time - _region->start() >= _region->length() || time < _region->start()) {
1164                         sysex->hide();
1165                 } else {
1166                         sysex->show();
1167                 }
1168
1169                 _sys_exes.push_back(sysex);
1170         }
1171 }
1172
1173
1174 MidiRegionView::~MidiRegionView ()
1175 {
1176         in_destructor = true;
1177
1178         trackview.editor().verbose_cursor()->hide ();
1179
1180         note_delete_connection.disconnect ();
1181
1182         delete _list_editor;
1183
1184         RegionViewGoingAway (this); /* EMIT_SIGNAL */
1185
1186         if (_active_notes) {
1187                 end_write();
1188         }
1189
1190         _selection.clear();
1191         clear_events();
1192
1193         delete _note_group;
1194         delete _note_diff_command;
1195         delete _step_edit_cursor;
1196         delete _temporary_note_group;
1197 }
1198
1199 void
1200 MidiRegionView::region_resized (const PropertyChange& what_changed)
1201 {
1202         RegionView::region_resized(what_changed);
1203
1204         if (what_changed.contains (ARDOUR::Properties::position)) {
1205                 set_duration(_region->length(), 0);
1206                 if (_enable_display) {
1207                         redisplay_model();
1208                 }
1209         }
1210 }
1211
1212 void
1213 MidiRegionView::reset_width_dependent_items (double pixel_width)
1214 {
1215         RegionView::reset_width_dependent_items(pixel_width);
1216         assert(_pixel_width == pixel_width);
1217
1218         if (_enable_display) {
1219                 redisplay_model();
1220         }
1221
1222         move_step_edit_cursor (_step_edit_cursor_position);
1223         set_step_edit_cursor_width (_step_edit_cursor_width);
1224 }
1225
1226 void
1227 MidiRegionView::set_height (double height)
1228 {
1229         static const double FUDGE = 2.0;
1230         const double old_height = _height;
1231         RegionView::set_height(height);
1232         _height = height - FUDGE;
1233
1234         apply_note_range(midi_stream_view()->lowest_note(),
1235                          midi_stream_view()->highest_note(),
1236                          height != old_height + FUDGE);
1237
1238         if (name_pixbuf) {
1239                 name_pixbuf->raise_to_top();
1240         }
1241
1242         for (PatchChanges::iterator x = _patch_changes.begin(); x != _patch_changes.end(); ++x) {
1243                 (*x)->set_height (midi_stream_view()->contents_height());
1244         }
1245
1246         if (_step_edit_cursor) {
1247                 _step_edit_cursor->property_y2() = midi_stream_view()->contents_height();
1248         }
1249 }
1250
1251
1252 /** Apply the current note range from the stream view
1253  * by repositioning/hiding notes as necessary
1254  */
1255 void
1256 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
1257 {
1258         if (!_enable_display) {
1259                 return;
1260         }
1261
1262         if (!force && _current_range_min == min && _current_range_max == max) {
1263                 return;
1264         }
1265
1266         _current_range_min = min;
1267         _current_range_max = max;
1268
1269         for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
1270                 CanvasNoteEvent* event = *i;
1271                 boost::shared_ptr<NoteType> note (event->note());
1272
1273                 if (note->note() < _current_range_min ||
1274                     note->note() > _current_range_max) {
1275                         event->hide();
1276                 } else {
1277                         event->show();
1278                 }
1279
1280                 if (CanvasNote* cnote = dynamic_cast<CanvasNote*>(event)) {
1281
1282                         const double y1 = midi_stream_view()->note_to_y(note->note());
1283                         const double y2 = y1 + floor(midi_stream_view()->note_height());
1284
1285                         cnote->property_y1() = y1;
1286                         cnote->property_y2() = y2;
1287
1288                 } else if (CanvasHit* chit = dynamic_cast<CanvasHit*>(event)) {
1289
1290                         const double diamond_size = update_hit (chit);
1291
1292                         chit->set_height (diamond_size);
1293                 }
1294         }
1295 }
1296
1297 GhostRegion*
1298 MidiRegionView::add_ghost (TimeAxisView& tv)
1299 {
1300         CanvasNote* note;
1301
1302         double unit_position = _region->position () / samples_per_unit;
1303         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
1304         MidiGhostRegion* ghost;
1305
1306         if (mtv && mtv->midi_view()) {
1307                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group
1308                    to allow having midi notes on top of note lines and waveforms.
1309                 */
1310                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
1311         } else {
1312                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
1313         }
1314
1315         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1316                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
1317                         ghost->add_note(note);
1318                 }
1319         }
1320
1321         ghost->set_height ();
1322         ghost->set_duration (_region->length() / samples_per_unit);
1323         ghosts.push_back (ghost);
1324
1325         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&RegionView::remove_ghost, this, _1), gui_context());
1326
1327         return ghost;
1328 }
1329
1330
1331 /** Begin tracking note state for successive calls to add_event
1332  */
1333 void
1334 MidiRegionView::begin_write()
1335 {
1336         assert(!_active_notes);
1337         _active_notes = new CanvasNote*[128];
1338         for (unsigned i=0; i < 128; ++i) {
1339                 _active_notes[i] = 0;
1340         }
1341 }
1342
1343
1344 /** Destroy note state for add_event
1345  */
1346 void
1347 MidiRegionView::end_write()
1348 {
1349         delete[] _active_notes;
1350         _active_notes = 0;
1351         _marked_for_selection.clear();
1352         _marked_for_velocity.clear();
1353 }
1354
1355
1356 /** Resolve an active MIDI note (while recording).
1357  */
1358 void
1359 MidiRegionView::resolve_note(uint8_t note, double end_time)
1360 {
1361         if (midi_view()->note_mode() != Sustained) {
1362                 return;
1363         }
1364
1365         if (_active_notes && _active_notes[note]) {
1366
1367                 const framepos_t end_time_frames = beats_to_frames(end_time);
1368
1369                 _active_notes[note]->property_x2() = trackview.editor().frame_to_pixel(end_time_frames);
1370                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
1371                 _active_notes[note] = 0;
1372         }
1373 }
1374
1375
1376 /** Extend active notes to rightmost edge of region (if length is changed)
1377  */
1378 void
1379 MidiRegionView::extend_active_notes()
1380 {
1381         if (!_active_notes) {
1382                 return;
1383         }
1384
1385         for (unsigned i=0; i < 128; ++i) {
1386                 if (_active_notes[i]) {
1387                         _active_notes[i]->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1388                 }
1389         }
1390 }
1391
1392
1393 void
1394 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
1395 {
1396         if (_no_sound_notes || !trackview.editor().sound_notes()) {
1397                 return;
1398         }
1399
1400         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1401
1402         if (!route_ui || !route_ui->midi_track()) {
1403                 return;
1404         }
1405
1406         NotePlayer* np = new NotePlayer (route_ui->midi_track());
1407         np->add (note);
1408         np->play ();
1409 }
1410
1411 void
1412 MidiRegionView::play_midi_chord (vector<boost::shared_ptr<NoteType> > notes)
1413 {
1414         if (_no_sound_notes || !trackview.editor().sound_notes()) {
1415                 return;
1416         }
1417
1418         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1419
1420         if (!route_ui || !route_ui->midi_track()) {
1421                 return;
1422         }
1423
1424         NotePlayer* np = new NotePlayer (route_ui->midi_track());
1425
1426         for (vector<boost::shared_ptr<NoteType> >::iterator n = notes.begin(); n != notes.end(); ++n) {
1427                 np->add (*n);
1428         }
1429
1430         np->play ();
1431 }
1432
1433
1434 bool
1435 MidiRegionView::note_in_region_range(const boost::shared_ptr<NoteType> note, bool& visible) const
1436 {
1437         const framepos_t note_start_frames = beats_to_frames(note->time());
1438
1439         bool outside = (note_start_frames - _region->start() >= _region->length()) ||
1440                 (note_start_frames < _region->start());
1441
1442         visible = (note->note() >= midi_stream_view()->lowest_note()) &&
1443                 (note->note() <= midi_stream_view()->highest_note());
1444
1445         return !outside;
1446 }
1447
1448 /** Update a canvas note's size from its model note.
1449  *  @param ev Canvas note to update.
1450  *  @param update_ghost_regions true to update the note in any ghost regions that we have, otherwise false.
1451  */
1452 void
1453 MidiRegionView::update_note (CanvasNote* ev, bool update_ghost_regions)
1454 {
1455         boost::shared_ptr<NoteType> note = ev->note();
1456
1457         const framepos_t note_start_frames = beats_to_frames(note->time());
1458
1459         /* trim note display to not overlap the end of its region */
1460         const framepos_t note_end_frames = min (beats_to_frames (note->end_time()), _region->start() + _region->length());
1461
1462         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1463         const double y1 = midi_stream_view()->note_to_y(note->note());
1464         const double note_endpixel = trackview.editor().frame_to_pixel(note_end_frames - _region->start());
1465
1466         ev->property_x1() = x;
1467         ev->property_y1() = y1;
1468
1469         if (note->length() > 0) {
1470                 ev->property_x2() = note_endpixel;
1471         } else {
1472                 ev->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1473         }
1474
1475         ev->property_y2() = y1 + floor(midi_stream_view()->note_height());
1476
1477         if (note->length() == 0) {
1478                 if (_active_notes) {
1479                         assert(note->note() < 128);
1480                         // If this note is already active there's a stuck note,
1481                         // finish the old note rectangle
1482                         if (_active_notes[note->note()]) {
1483                                 CanvasNote* const old_rect = _active_notes[note->note()];
1484                                 boost::shared_ptr<NoteType> old_note = old_rect->note();
1485                                 old_rect->property_x2() = x;
1486                                 old_rect->property_outline_what() = (guint32) 0xF;
1487                         }
1488                         _active_notes[note->note()] = ev;
1489                 }
1490                 /* outline all but right edge */
1491                 ev->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
1492         } else {
1493                 /* outline all edges */
1494                 ev->property_outline_what() = (guint32) 0xF;
1495         }
1496
1497         if (update_ghost_regions) {
1498                 for (std::vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
1499                         MidiGhostRegion* gr = dynamic_cast<MidiGhostRegion*> (*i);
1500                         if (gr) {
1501                                 gr->update_note (ev);
1502                         }
1503                 }
1504         }
1505 }
1506
1507 double
1508 MidiRegionView::update_hit (CanvasHit* ev)
1509 {
1510         boost::shared_ptr<NoteType> note = ev->note();
1511
1512         const framepos_t note_start_frames = beats_to_frames(note->time());
1513         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1514         const double diamond_size = midi_stream_view()->note_height() / 2.0;
1515         const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
1516
1517         ev->move_to (x, y);
1518
1519         return diamond_size;
1520 }
1521
1522 /** Add a MIDI note to the view (with length).
1523  *
1524  * If in sustained mode, notes with length 0 will be considered active
1525  * notes, and resolve_note should be called when the corresponding note off
1526  * event arrives, to properly display the note.
1527  */
1528 void
1529 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note, bool visible)
1530 {
1531         CanvasNoteEvent* event = 0;
1532
1533         assert(note->time() >= 0);
1534         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
1535
1536         //ArdourCanvas::Group* const group = (ArdourCanvas::Group*) get_canvas_group();
1537
1538         if (midi_view()->note_mode() == Sustained) {
1539
1540                 CanvasNote* ev_rect = new CanvasNote(*this, *_note_group, note);
1541
1542                 update_note (ev_rect);
1543
1544                 event = ev_rect;
1545
1546                 MidiGhostRegion* gr;
1547
1548                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
1549                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
1550                                 gr->add_note(ev_rect);
1551                         }
1552                 }
1553
1554         } else if (midi_view()->note_mode() == Percussive) {
1555
1556                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
1557
1558                 CanvasHit* ev_diamond = new CanvasHit(*this, *_note_group, diamond_size, note);
1559
1560                 update_hit (ev_diamond);
1561
1562                 event = ev_diamond;
1563
1564         } else {
1565                 event = 0;
1566         }
1567
1568         if (event) {
1569                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
1570                         note_selected(event, true);
1571                 }
1572
1573                 if (_marked_for_velocity.find(note) != _marked_for_velocity.end()) {
1574                         event->show_velocity();
1575                 }
1576
1577                 event->on_channel_selection_change(_last_channel_selection);
1578                 _events.push_back(event);
1579
1580                 if (visible) {
1581                         event->show();
1582                 } else {
1583                         event->hide ();
1584                 }
1585         }
1586
1587         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1588         MidiStreamView* const view = mtv->midi_view();
1589
1590         view->update_note_range(note->note());
1591 }
1592
1593 void
1594 MidiRegionView::step_add_note (uint8_t channel, uint8_t number, uint8_t velocity,
1595                                Evoral::MusicalTime pos, Evoral::MusicalTime len)
1596 {
1597         boost::shared_ptr<NoteType> new_note (new NoteType (channel, pos, len, number, velocity));
1598
1599         /* potentially extend region to hold new note */
1600
1601         framepos_t end_frame = _region->position() + beats_to_frames (new_note->end_time());
1602         framepos_t region_end = _region->position() + _region->length() - 1;
1603
1604         if (end_frame > region_end) {
1605                 _region->set_length (end_frame - _region->position());
1606         }
1607
1608         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1609         MidiStreamView* const view = mtv->midi_view();
1610
1611         view->update_note_range(new_note->note());
1612
1613         _marked_for_selection.clear ();
1614         clear_selection ();
1615
1616         start_note_diff_command (_("step add"));
1617         note_diff_add_note (new_note, true, false);
1618         apply_diff();
1619
1620         // last_step_edit_note = new_note;
1621 }
1622
1623 void
1624 MidiRegionView::step_sustain (Evoral::MusicalTime beats)
1625 {
1626         change_note_lengths (false, false, beats, false, true);
1627 }
1628
1629 void
1630 MidiRegionView::add_canvas_patch_change (MidiModel::PatchChangePtr patch, const string& displaytext)
1631 {
1632         assert (patch->time() >= 0);
1633
1634         const double x = trackview.editor().frame_to_pixel (beats_to_frames (patch->time()));
1635
1636         double const height = midi_stream_view()->contents_height();
1637
1638         boost::shared_ptr<CanvasPatchChange> patch_change = boost::shared_ptr<CanvasPatchChange>(
1639                 new CanvasPatchChange(*this, *_note_group,
1640                                       displaytext,
1641                                       height,
1642                                       x, 1.0,
1643                                       _model_name,
1644                                       _custom_device_mode,
1645                                       patch)
1646                           );
1647
1648         // Show unless patch change is beyond the region bounds
1649         if (patch->time() - _region->start() >= _region->length() || patch->time() < _region->start()) {
1650                 patch_change->hide();
1651         } else {
1652                 patch_change->show();
1653         }
1654
1655         _patch_changes.push_back (patch_change);
1656 }
1657
1658 void
1659 MidiRegionView::get_patch_key_at (Evoral::MusicalTime time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1660 {
1661         MidiModel::PatchChanges::iterator i = _model->patch_change_lower_bound (time);
1662         while (i != _model->patch_changes().end() && (*i)->channel() != channel) {
1663                 ++i;
1664         }
1665
1666         if (i != _model->patch_changes().end()) {
1667                 key.msb = (*i)->bank_msb ();
1668                 key.lsb = (*i)->bank_lsb ();
1669                 key.program_number = (*i)->program ();
1670         } else {
1671                 key.msb = key.lsb = key.program_number = 0;
1672         }
1673
1674         assert (key.is_sane());
1675 }
1676
1677
1678 void
1679 MidiRegionView::change_patch_change (CanvasPatchChange& pc, const MIDI::Name::PatchPrimaryKey& new_patch)
1680 {
1681         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("alter patch change"));
1682
1683         if (pc.patch()->program() != new_patch.program_number) {
1684                 c->change_program (pc.patch (), new_patch.program_number);
1685         }
1686
1687         int const new_bank = (new_patch.msb << 7) | new_patch.lsb;
1688         if (pc.patch()->bank() != new_bank) {
1689                 c->change_bank (pc.patch (), new_bank);
1690         }
1691
1692         _model->apply_command (*trackview.session(), c);
1693
1694         _patch_changes.clear ();
1695         display_patch_changes ();
1696 }
1697
1698 void
1699 MidiRegionView::change_patch_change (MidiModel::PatchChangePtr old_change, const Evoral::PatchChange<Evoral::MusicalTime> & new_change)
1700 {
1701         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("alter patch change"));
1702
1703         if (old_change->time() != new_change.time()) {
1704                 c->change_time (old_change, new_change.time());
1705         }
1706
1707         if (old_change->channel() != new_change.channel()) {
1708                 c->change_channel (old_change, new_change.channel());
1709         }
1710
1711         if (old_change->program() != new_change.program()) {
1712                 c->change_program (old_change, new_change.program());
1713         }
1714
1715         if (old_change->bank() != new_change.bank()) {
1716                 c->change_bank (old_change, new_change.bank());
1717         }
1718
1719         _model->apply_command (*trackview.session(), c);
1720
1721         _patch_changes.clear ();
1722         display_patch_changes ();
1723 }
1724
1725 /** Add a patch change to the region.
1726  *  @param t Time in frames relative to region position
1727  *  @param patch Patch to add; time and channel are ignored (time is converted from t, and channel comes from
1728  *  MidiTimeAxisView::get_channel_for_add())
1729  */
1730 void
1731 MidiRegionView::add_patch_change (framecnt_t t, Evoral::PatchChange<Evoral::MusicalTime> const & patch)
1732 {
1733         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1734
1735         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("add patch change"));
1736         c->add (MidiModel::PatchChangePtr (
1737                         new Evoral::PatchChange<Evoral::MusicalTime> (
1738                                 frames_to_beats (t + midi_region()->start()), mtv->get_channel_for_add(), patch.program(), patch.bank()
1739                                                                       )
1740                                            ));
1741
1742         _model->apply_command (*trackview.session(), c);
1743
1744         _patch_changes.clear ();
1745         display_patch_changes ();
1746 }
1747
1748 void
1749 MidiRegionView::move_patch_change (CanvasPatchChange& pc, Evoral::MusicalTime t)
1750 {
1751         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("move patch change"));
1752         c->change_time (pc.patch (), t);
1753         _model->apply_command (*trackview.session(), c);
1754
1755         _patch_changes.clear ();
1756         display_patch_changes ();
1757 }
1758
1759 void
1760 MidiRegionView::delete_patch_change (CanvasPatchChange* pc)
1761 {
1762         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("delete patch change"));
1763         c->remove (pc->patch ());
1764         _model->apply_command (*trackview.session(), c);
1765
1766         _patch_changes.clear ();
1767         display_patch_changes ();
1768 }
1769
1770 void
1771 MidiRegionView::previous_patch (CanvasPatchChange& patch)
1772 {
1773         if (patch.patch()->program() < 127) {
1774                 MIDI::Name::PatchPrimaryKey key;
1775                 get_patch_key_at (patch.patch()->time(), patch.patch()->channel(), key);
1776                 key.program_number++;
1777                 change_patch_change (patch, key);
1778         }
1779 }
1780
1781 void
1782 MidiRegionView::next_patch (CanvasPatchChange& patch)
1783 {
1784         if (patch.patch()->program() > 0) {
1785                 MIDI::Name::PatchPrimaryKey key;
1786                 get_patch_key_at (patch.patch()->time(), patch.patch()->channel(), key);
1787                 key.program_number--;
1788                 change_patch_change (patch, key);
1789         }
1790 }
1791
1792 void
1793 MidiRegionView::maybe_remove_deleted_note_from_selection (CanvasNoteEvent* cne)
1794 {
1795         if (_selection.empty()) {
1796                 return;
1797         }
1798
1799         if (_selection.erase (cne) > 0) {
1800                 cerr << "Erased a CNE from selection\n";
1801         }
1802 }
1803
1804 void
1805 MidiRegionView::delete_selection()
1806 {
1807         if (_selection.empty()) {
1808                 return;
1809         }
1810
1811         start_note_diff_command (_("delete selection"));
1812
1813         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1814                 if ((*i)->selected()) {
1815                         _note_diff_command->remove((*i)->note());
1816                 }
1817         }
1818
1819         _selection.clear();
1820
1821         apply_diff ();
1822 }
1823
1824 void
1825 MidiRegionView::delete_note (boost::shared_ptr<NoteType> n)
1826 {
1827         start_note_diff_command (_("delete note"));
1828         _note_diff_command->remove (n);
1829         apply_diff ();
1830
1831         trackview.editor().verbose_cursor()->hide ();
1832 }
1833
1834 void
1835 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1836 {
1837         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1838                 if ((*i)->selected() && (*i) != ev) {
1839                         (*i)->set_selected(false);
1840                         (*i)->hide_velocity();
1841                 }
1842         }
1843
1844         _selection.clear();
1845 }
1846
1847 void
1848 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1849 {
1850         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
1851                 if ((*i) != ev) {
1852
1853                         Selection::iterator tmp = i;
1854                         ++tmp;
1855
1856                         (*i)->set_selected (false);
1857                         _selection.erase (i);
1858
1859                         i = tmp;
1860
1861                 } else {
1862                         ++i;
1863                 }
1864         }
1865
1866         /* don't bother with removing this regionview from the editor selection,
1867            since we're about to add another note, and thus put/keep this
1868            regionview in the editor selection.
1869         */
1870
1871         if (!ev->selected()) {
1872                 add_to_selection (ev);
1873         }
1874 }
1875
1876 void
1877 MidiRegionView::select_all_notes ()
1878 {
1879         clear_selection ();
1880
1881         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1882                 add_to_selection (*i);
1883         }
1884 }
1885
1886 void
1887 MidiRegionView::select_matching_notes (uint8_t notenum, uint16_t channel_mask, bool add, bool extend)
1888 {
1889         uint8_t low_note = 127;
1890         uint8_t high_note = 0;
1891         MidiModel::Notes& notes (_model->notes());
1892         _optimization_iterator = _events.begin();
1893
1894         if (!add) {
1895                 clear_selection ();
1896         }
1897
1898         if (extend && _selection.empty()) {
1899                 extend = false;
1900         }
1901
1902         if (extend) {
1903
1904                 /* scan existing selection to get note range */
1905
1906                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1907                         if ((*i)->note()->note() < low_note) {
1908                                 low_note = (*i)->note()->note();
1909                         }
1910                         if ((*i)->note()->note() > high_note) {
1911                                 high_note = (*i)->note()->note();
1912                         }
1913                 }
1914
1915                 low_note = min (low_note, notenum);
1916                 high_note = max (high_note, notenum);
1917         }
1918
1919         _no_sound_notes = true;
1920
1921         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1922
1923                 boost::shared_ptr<NoteType> note (*n);
1924                 CanvasNoteEvent* cne;
1925                 bool select = false;
1926
1927                 if (((1 << note->channel()) & channel_mask) != 0) {
1928                         if (extend) {
1929                                 if ((note->note() >= low_note && note->note() <= high_note)) {
1930                                         select = true;
1931                                 }
1932                         } else if (note->note() == notenum) {
1933                                 select = true;
1934                         }
1935                 }
1936
1937                 if (select) {
1938                         if ((cne = find_canvas_note (note)) != 0) {
1939                                 // extend is false because we've taken care of it,
1940                                 // since it extends by time range, not pitch.
1941                                 note_selected (cne, add, false);
1942                         }
1943                 }
1944
1945                 add = true; // we need to add all remaining matching notes, even if the passed in value was false (for "set")
1946
1947         }
1948
1949         _no_sound_notes = false;
1950 }
1951
1952 void
1953 MidiRegionView::toggle_matching_notes (uint8_t notenum, uint16_t channel_mask)
1954 {
1955         MidiModel::Notes& notes (_model->notes());
1956         _optimization_iterator = _events.begin();
1957
1958         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1959
1960                 boost::shared_ptr<NoteType> note (*n);
1961                 CanvasNoteEvent* cne;
1962
1963                 if (note->note() == notenum && (((0x0001 << note->channel()) & channel_mask) != 0)) {
1964                         if ((cne = find_canvas_note (note)) != 0) {
1965                                 if (cne->selected()) {
1966                                         note_deselected (cne);
1967                                 } else {
1968                                         note_selected (cne, true, false);
1969                                 }
1970                         }
1971                 }
1972         }
1973 }
1974
1975 void
1976 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add, bool extend)
1977 {
1978         if (!add) {
1979                 clear_selection_except(ev);
1980         }
1981
1982         if (!extend) {
1983
1984                 if (!ev->selected()) {
1985                         add_to_selection (ev);
1986                 }
1987
1988         } else {
1989                 /* find end of latest note selected, select all between that and the start of "ev" */
1990
1991                 Evoral::MusicalTime earliest = Evoral::MaxMusicalTime;
1992                 Evoral::MusicalTime latest = 0;
1993
1994                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1995                         if ((*i)->note()->end_time() > latest) {
1996                                 latest = (*i)->note()->end_time();
1997                         }
1998                         if ((*i)->note()->time() < earliest) {
1999                                 earliest = (*i)->note()->time();
2000                         }
2001                 }
2002
2003                 if (ev->note()->end_time() > latest) {
2004                         latest = ev->note()->end_time();
2005                 }
2006
2007                 if (ev->note()->time() < earliest) {
2008                         earliest = ev->note()->time();
2009                 }
2010
2011                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2012
2013                         /* find notes entirely within OR spanning the earliest..latest range */
2014
2015                         if (((*i)->note()->time() >= earliest && (*i)->note()->end_time() <= latest) ||
2016                             ((*i)->note()->time() <= earliest && (*i)->note()->end_time() >= latest)) {
2017                                 add_to_selection (*i);
2018                         }
2019
2020 #if 0
2021                         /* if events were guaranteed to be time sorted, we could do this.
2022                            but as of sept 10th 2009, they no longer are.
2023                         */
2024
2025                         if ((*i)->note()->time() > latest) {
2026                                 break;
2027                         }
2028 #endif
2029                 }
2030         }
2031 }
2032
2033 void
2034 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev)
2035 {
2036         remove_from_selection (ev);
2037 }
2038
2039 void
2040 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
2041 {
2042         if (x1 > x2) {
2043                 swap (x1, x2);
2044         }
2045
2046         if (y1 > y2) {
2047                 swap (y1, y2);
2048         }
2049
2050         // TODO: Make this faster by storing the last updated selection rect, and only
2051         // adjusting things that are in the area that appears/disappeared.
2052         // We probably need a tree to be able to find events in O(log(n)) time.
2053
2054         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2055
2056                 /* check if any corner of the note is inside the rect
2057
2058                    Notes:
2059                    1) this is computing "touched by", not "contained by" the rect.
2060                    2) this does not require that events be sorted in time.
2061                 */
2062
2063                 const double ix1 = (*i)->x1();
2064                 const double ix2 = (*i)->x2();
2065                 const double iy1 = (*i)->y1();
2066                 const double iy2 = (*i)->y2();
2067
2068                 if ((ix1 >= x1 && ix1 <= x2 && iy1 >= y1 && iy1 <= y2) ||
2069                     (ix1 >= x1 && ix1 <= x2 && iy2 >= y1 && iy2 <= y2) ||
2070                     (ix2 >= x1 && ix2 <= x2 && iy1 >= y1 && iy1 <= y2) ||
2071                     (ix2 >= x1 && ix2 <= x2 && iy2 >= y1 && iy2 <= y2)) {
2072
2073                         // Inside rectangle
2074                         if (!(*i)->selected()) {
2075                                 add_to_selection (*i);
2076                         }
2077                 } else if ((*i)->selected()) {
2078                         // Not inside rectangle
2079                         remove_from_selection (*i);
2080                 }
2081         }
2082 }
2083
2084 void
2085 MidiRegionView::remove_from_selection (CanvasNoteEvent* ev)
2086 {
2087         Selection::iterator i = _selection.find (ev);
2088
2089         if (i != _selection.end()) {
2090                 _selection.erase (i);
2091         }
2092
2093         ev->set_selected (false);
2094         ev->hide_velocity ();
2095
2096         if (_selection.empty()) {
2097                 PublicEditor& editor (trackview.editor());
2098                 editor.get_selection().remove (this);
2099         }
2100 }
2101
2102 void
2103 MidiRegionView::add_to_selection (CanvasNoteEvent* ev)
2104 {
2105         bool add_mrv_selection = false;
2106
2107         if (_selection.empty()) {
2108                 add_mrv_selection = true;
2109         }
2110
2111         if (_selection.insert (ev).second) {
2112                 ev->set_selected (true);
2113                 play_midi_note ((ev)->note());
2114         }
2115
2116         if (add_mrv_selection) {
2117                 PublicEditor& editor (trackview.editor());
2118                 editor.get_selection().add (this);
2119         }
2120 }
2121
2122 void
2123 MidiRegionView::move_selection(double dx, double dy, double cumulative_dy)
2124 {
2125         typedef vector<boost::shared_ptr<NoteType> > PossibleChord;
2126         PossibleChord to_play;
2127         Evoral::MusicalTime earliest = Evoral::MaxMusicalTime;
2128
2129         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2130                 if ((*i)->note()->time() < earliest) {
2131                         earliest = (*i)->note()->time();
2132                 }
2133         }
2134
2135         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2136                 if (Evoral::musical_time_equal ((*i)->note()->time(), earliest)) {
2137                         to_play.push_back ((*i)->note());
2138                 }
2139                 (*i)->move_event(dx, dy);
2140         }
2141
2142         if (dy && !_selection.empty() && !_no_sound_notes && trackview.editor().sound_notes()) {
2143
2144                 if (to_play.size() > 1) {
2145
2146                         PossibleChord shifted;
2147
2148                         for (PossibleChord::iterator n = to_play.begin(); n != to_play.end(); ++n) {
2149                                 boost::shared_ptr<NoteType> moved_note (new NoteType (**n));
2150                                 moved_note->set_note (moved_note->note() + cumulative_dy);
2151                                 shifted.push_back (moved_note);
2152                         }
2153
2154                         play_midi_chord (shifted);
2155
2156                 } else if (!to_play.empty()) {
2157
2158                         boost::shared_ptr<NoteType> moved_note (new NoteType (*to_play.front()));
2159                         moved_note->set_note (moved_note->note() + cumulative_dy);
2160                         play_midi_note (moved_note);
2161                 }
2162         }
2163 }
2164
2165 void
2166 MidiRegionView::note_dropped(CanvasNoteEvent *, frameoffset_t dt, int8_t dnote)
2167 {
2168         assert (!_selection.empty());
2169
2170         uint8_t lowest_note_in_selection  = 127;
2171         uint8_t highest_note_in_selection = 0;
2172         uint8_t highest_note_difference = 0;
2173
2174         // find highest and lowest notes first
2175
2176         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2177                 uint8_t pitch = (*i)->note()->note();
2178                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
2179                 highest_note_in_selection = std::max(highest_note_in_selection, pitch);
2180         }
2181
2182         /*
2183           cerr << "dnote: " << (int) dnote << endl;
2184           cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
2185           << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
2186           cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
2187           << int(highest_note_in_selection) << endl;
2188           cerr << "selection size: " << _selection.size() << endl;
2189           cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
2190         */
2191
2192         // Make sure the note pitch does not exceed the MIDI standard range
2193         if (highest_note_in_selection + dnote > 127) {
2194                 highest_note_difference = highest_note_in_selection - 127;
2195         }
2196
2197         start_note_diff_command (_("move notes"));
2198
2199         for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ++i) {
2200
2201                 Evoral::MusicalTime new_time = frames_to_beats (beats_to_frames ((*i)->note()->time()) + dt);
2202
2203                 if (new_time < 0) {
2204                         continue;
2205                 }
2206
2207                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::StartTime, new_time);
2208
2209                 uint8_t original_pitch = (*i)->note()->note();
2210                 uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
2211
2212                 // keep notes in standard midi range
2213                 clamp_to_0_127(new_pitch);
2214
2215                 // keep original pitch if note is dragged outside valid midi range
2216                 if ((original_pitch != 0 && new_pitch == 0)
2217                     || (original_pitch != 127 && new_pitch == 127)) {
2218                         new_pitch = original_pitch;
2219                 }
2220
2221                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
2222                 highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
2223
2224                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::NoteNumber, new_pitch);
2225         }
2226
2227         apply_diff();
2228
2229         // care about notes being moved beyond the upper/lower bounds on the canvas
2230         if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
2231             highest_note_in_selection > midi_stream_view()->highest_note()) {
2232                 midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
2233         }
2234 }
2235
2236 framepos_t
2237 MidiRegionView::snap_pixel_to_frame(double x)
2238 {
2239         PublicEditor& editor (trackview.editor());
2240         return snap_frame_to_frame (editor.pixel_to_frame (x));
2241 }
2242
2243 /** Snap a frame offset within our region using the current snap settings.
2244  *  @param x Frame offset from this region's position.
2245  *  @return Snapped frame offset from this region's position.
2246  */
2247 frameoffset_t
2248 MidiRegionView::snap_frame_to_frame (frameoffset_t x)
2249 {
2250         PublicEditor& editor = trackview.editor();
2251
2252         /* x is region relative, convert it to global absolute frames */
2253         framepos_t const session_frame = x + _region->position();
2254
2255         /* try a snap in either direction */
2256         framepos_t frame = session_frame;
2257         editor.snap_to (frame, 0);
2258
2259         /* if we went off the beginning of the region, snap forwards */
2260         if (frame < _region->position ()) {
2261                 frame = session_frame;
2262                 editor.snap_to (frame, 1);
2263         }
2264
2265         /* back to region relative */
2266         return frame - _region->position();
2267 }
2268
2269 double
2270 MidiRegionView::snap_to_pixel(double x)
2271 {
2272         return (double) trackview.editor().frame_to_pixel(snap_pixel_to_frame(x));
2273 }
2274
2275 double
2276 MidiRegionView::get_position_pixels()
2277 {
2278         framepos_t region_frame = get_position();
2279         return trackview.editor().frame_to_pixel(region_frame);
2280 }
2281
2282 double
2283 MidiRegionView::get_end_position_pixels()
2284 {
2285         framepos_t frame = get_position() + get_duration ();
2286         return trackview.editor().frame_to_pixel(frame);
2287 }
2288
2289 framepos_t
2290 MidiRegionView::beats_to_frames(double beats) const
2291 {
2292         return _time_converter.to(beats);
2293 }
2294
2295 double
2296 MidiRegionView::frames_to_beats(framepos_t frames) const
2297 {
2298         return _time_converter.from(frames);
2299 }
2300
2301 void
2302 MidiRegionView::begin_resizing (bool /*at_front*/)
2303 {
2304         _resize_data.clear();
2305
2306         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2307                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
2308
2309                 // only insert CanvasNotes into the map
2310                 if (note) {
2311                         NoteResizeData *resize_data = new NoteResizeData();
2312                         resize_data->canvas_note = note;
2313
2314                         // create a new SimpleRect from the note which will be the resize preview
2315                         SimpleRect *resize_rect = new SimpleRect(
2316                                 *_note_group, note->x1(), note->y1(), note->x2(), note->y2());
2317
2318                         // calculate the colors: get the color settings
2319                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
2320                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
2321                                 128);
2322
2323                         // make the resize preview notes more transparent and bright
2324                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
2325
2326                         // calculate color based on note velocity
2327                         resize_rect->property_fill_color_rgba() = UINT_INTERPOLATE(
2328                                 CanvasNoteEvent::meter_style_fill_color(note->note()->velocity(), note->selected()),
2329                                 fill_color,
2330                                 0.85);
2331
2332                         resize_rect->property_outline_color_rgba() = CanvasNoteEvent::calculate_outline(
2333                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
2334
2335                         resize_data->resize_rect = resize_rect;
2336                         _resize_data.push_back(resize_data);
2337                 }
2338         }
2339 }
2340
2341 /** Update resizing notes while user drags.
2342  * @param primary `primary' note for the drag; ie the one that is used as the reference in non-relative mode.
2343  * @param at_front which end of the note (true == note on, false == note off)
2344  * @param delta_x change in mouse position since the start of the drag
2345  * @param relative true if relative resizing is taking place, false if absolute resizing.  This only makes
2346  * a difference when multiple notes are being resized; in relative mode, each note's length is changed by the
2347  * amount of the drag.  In non-relative mode, all selected notes are set to have the same start or end point
2348  * as the \a primary note.
2349  */
2350 void
2351 MidiRegionView::update_resizing (ArdourCanvas::CanvasNoteEvent* primary, bool at_front, double delta_x, bool relative)
2352 {
2353         bool cursor_set = false;
2354
2355         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2356                 SimpleRect* resize_rect = (*i)->resize_rect;
2357                 CanvasNote* canvas_note = (*i)->canvas_note;
2358                 double current_x;
2359
2360                 if (at_front) {
2361                         if (relative) {
2362                                 current_x = canvas_note->x1() + delta_x;
2363                         } else {
2364                                 current_x = primary->x1() + delta_x;
2365                         }
2366                 } else {
2367                         if (relative) {
2368                                 current_x = canvas_note->x2() + delta_x;
2369                         } else {
2370                                 current_x = primary->x2() + delta_x;
2371                         }
2372                 }
2373
2374                 if (at_front) {
2375                         resize_rect->property_x1() = snap_to_pixel(current_x);
2376                         resize_rect->property_x2() = canvas_note->x2();
2377                 } else {
2378                         resize_rect->property_x2() = snap_to_pixel(current_x);
2379                         resize_rect->property_x1() = canvas_note->x1();
2380                 }
2381
2382                 if (!cursor_set) {
2383                         double beats;
2384
2385                         beats = snap_pixel_to_frame (current_x);
2386                         beats = frames_to_beats (beats);
2387
2388                         double len;
2389
2390                         if (at_front) {
2391                                 if (beats < canvas_note->note()->end_time()) {
2392                                         len = canvas_note->note()->time() - beats;
2393                                         len += canvas_note->note()->length();
2394                                 } else {
2395                                         len = 0;
2396                                 }
2397                         } else {
2398                                 if (beats >= canvas_note->note()->time()) {
2399                                         len = beats - canvas_note->note()->time();
2400                                 } else {
2401                                         len = 0;
2402                                 }
2403                         }
2404
2405                         char buf[16];
2406                         snprintf (buf, sizeof (buf), "%.3g beats", len);
2407                         show_verbose_cursor (buf, 0, 0);
2408
2409                         cursor_set = true;
2410                 }
2411
2412         }
2413 }
2414
2415
2416 /** Finish resizing notes when the user releases the mouse button.
2417  *  Parameters the same as for \a update_resizing().
2418  */
2419 void
2420 MidiRegionView::commit_resizing (ArdourCanvas::CanvasNoteEvent* primary, bool at_front, double delta_x, bool relative)
2421 {
2422         start_note_diff_command (_("resize notes"));
2423
2424         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2425                 CanvasNote*  canvas_note = (*i)->canvas_note;
2426                 SimpleRect*  resize_rect = (*i)->resize_rect;
2427                 double current_x;
2428
2429                 if (at_front) {
2430                         if (relative) {
2431                                 current_x = canvas_note->x1() + delta_x;
2432                         } else {
2433                                 current_x = primary->x1() + delta_x;
2434                         }
2435                 } else {
2436                         if (relative) {
2437                                 current_x = canvas_note->x2() + delta_x;
2438                         } else {
2439                                 current_x = primary->x2() + delta_x;
2440                         }
2441                 }
2442
2443                 current_x = snap_pixel_to_frame (current_x);
2444                 current_x = frames_to_beats (current_x);
2445
2446                 if (at_front && current_x < canvas_note->note()->end_time()) {
2447                         note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::StartTime, current_x);
2448
2449                         double len = canvas_note->note()->time() - current_x;
2450                         len += canvas_note->note()->length();
2451
2452                         if (len > 0) {
2453                                 /* XXX convert to beats */
2454                                 note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::Length, len);
2455                         }
2456                 }
2457
2458                 if (!at_front) {
2459                         double len = current_x - canvas_note->note()->time();
2460
2461                         if (len > 0) {
2462                                 /* XXX convert to beats */
2463                                 note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::Length, len);
2464                         }
2465                 }
2466
2467                 delete resize_rect;
2468                 delete (*i);
2469         }
2470
2471         _resize_data.clear();
2472         apply_diff();
2473 }
2474
2475 void
2476 MidiRegionView::change_note_channel (CanvasNoteEvent* event, int8_t channel)
2477 {
2478         note_diff_add_change (event, MidiModel::NoteDiffCommand::Channel, (uint8_t) channel);
2479 }
2480
2481 void
2482 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
2483 {
2484         uint8_t new_velocity;
2485
2486         if (relative) {
2487                 new_velocity = event->note()->velocity() + velocity;
2488                 clamp_to_0_127(new_velocity);
2489         } else {
2490                 new_velocity = velocity;
2491         }
2492
2493         event->set_selected (event->selected()); // change color
2494
2495         note_diff_add_change (event, MidiModel::NoteDiffCommand::Velocity, new_velocity);
2496 }
2497
2498 void
2499 MidiRegionView::change_note_note (CanvasNoteEvent* event, int8_t note, bool relative)
2500 {
2501         uint8_t new_note;
2502
2503         if (relative) {
2504                 new_note = event->note()->note() + note;
2505         } else {
2506                 new_note = note;
2507         }
2508
2509         clamp_to_0_127 (new_note);
2510         note_diff_add_change (event, MidiModel::NoteDiffCommand::NoteNumber, new_note);
2511 }
2512
2513 void
2514 MidiRegionView::trim_note (CanvasNoteEvent* event, Evoral::MusicalTime front_delta, Evoral::MusicalTime end_delta)
2515 {
2516         bool change_start = false;
2517         bool change_length = false;
2518         Evoral::MusicalTime new_start = 0;
2519         Evoral::MusicalTime new_length = 0;
2520
2521         /* NOTE: the semantics of the two delta arguments are slightly subtle:
2522
2523            front_delta: if positive - move the start of the note later in time (shortening it)
2524            if negative - move the start of the note earlier in time (lengthening it)
2525
2526            end_delta:   if positive - move the end of the note later in time (lengthening it)
2527            if negative - move the end of the note earlier in time (shortening it)
2528         */
2529
2530         if (front_delta) {
2531                 if (front_delta < 0) {
2532
2533                         if (event->note()->time() < -front_delta) {
2534                                 new_start = 0;
2535                         } else {
2536                                 new_start = event->note()->time() + front_delta; // moves earlier
2537                         }
2538
2539                         /* start moved toward zero, so move the end point out to where it used to be.
2540                            Note that front_delta is negative, so this increases the length.
2541                         */
2542
2543                         new_length = event->note()->length() - front_delta;
2544                         change_start = true;
2545                         change_length = true;
2546
2547                 } else {
2548
2549                         Evoral::MusicalTime new_pos = event->note()->time() + front_delta;
2550
2551                         if (new_pos < event->note()->end_time()) {
2552                                 new_start = event->note()->time() + front_delta;
2553                                 /* start moved toward the end, so move the end point back to where it used to be */
2554                                 new_length = event->note()->length() - front_delta;
2555                                 change_start = true;
2556                                 change_length = true;
2557                         }
2558                 }
2559
2560         }
2561
2562         if (end_delta) {
2563                 bool can_change = true;
2564                 if (end_delta < 0) {
2565                         if (event->note()->length() < -end_delta) {
2566                                 can_change = false;
2567                         }
2568                 }
2569
2570                 if (can_change) {
2571                         new_length = event->note()->length() + end_delta;
2572                         change_length = true;
2573                 }
2574         }
2575
2576         if (change_start) {
2577                 note_diff_add_change (event, MidiModel::NoteDiffCommand::StartTime, new_start);
2578         }
2579
2580         if (change_length) {
2581                 note_diff_add_change (event, MidiModel::NoteDiffCommand::Length, new_length);
2582         }
2583 }
2584
2585 void
2586 MidiRegionView::change_note_time (CanvasNoteEvent* event, Evoral::MusicalTime delta, bool relative)
2587 {
2588         Evoral::MusicalTime new_time;
2589
2590         if (relative) {
2591                 if (delta < 0.0) {
2592                         if (event->note()->time() < -delta) {
2593                                 new_time = 0;
2594                         } else {
2595                                 new_time = event->note()->time() + delta;
2596                         }
2597                 } else {
2598                         new_time = event->note()->time() + delta;
2599                 }
2600         } else {
2601                 new_time = delta;
2602         }
2603
2604         note_diff_add_change (event, MidiModel::NoteDiffCommand::StartTime, new_time);
2605 }
2606
2607 void
2608 MidiRegionView::change_note_length (CanvasNoteEvent* event, Evoral::MusicalTime t)
2609 {
2610         note_diff_add_change (event, MidiModel::NoteDiffCommand::Length, t);
2611 }
2612
2613 void
2614 MidiRegionView::change_velocities (bool up, bool fine, bool allow_smush)
2615 {
2616         int8_t delta;
2617
2618         if (_selection.empty()) {
2619                 return;
2620         }
2621
2622         if (fine) {
2623                 delta = 1;
2624         } else {
2625                 delta = 10;
2626         }
2627
2628         if (!up) {
2629                 delta = -delta;
2630         }
2631
2632         if (!allow_smush) {
2633                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2634                         if ((*i)->note()->velocity() + delta == 0 || (*i)->note()->velocity() + delta == 127) {
2635                                 return;
2636                         }
2637                 }
2638         }
2639
2640         start_note_diff_command (_("change velocities"));
2641
2642         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
2643                 Selection::iterator next = i;
2644                 ++next;
2645                 change_note_velocity (*i, delta, true);
2646                 i = next;
2647         }
2648
2649         apply_diff();
2650
2651         if (!_selection.empty()) {
2652                 char buf[24];
2653                 snprintf (buf, sizeof (buf), "Vel %d",
2654                           (int) (*_selection.begin())->note()->velocity());
2655                 show_verbose_cursor (buf, 10, 10);
2656         }
2657 }
2658
2659
2660 void
2661 MidiRegionView::transpose (bool up, bool fine, bool allow_smush)
2662 {
2663         if (_selection.empty()) {
2664                 return;
2665         }
2666
2667         int8_t delta;
2668
2669         if (fine) {
2670                 delta = 1;
2671         } else {
2672                 delta = 12;
2673         }
2674
2675         if (!up) {
2676                 delta = -delta;
2677         }
2678
2679         if (!allow_smush) {
2680                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2681                         if (!up) {
2682                                 if ((int8_t) (*i)->note()->note() + delta <= 0) {
2683                                         return;
2684                                 }
2685                         } else {
2686                                 if ((int8_t) (*i)->note()->note() + delta > 127) {
2687                                         return;
2688                                 }
2689                         }
2690                 }
2691         }
2692
2693         start_note_diff_command (_("transpose"));
2694
2695         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2696                 Selection::iterator next = i;
2697                 ++next;
2698                 change_note_note (*i, delta, true);
2699                 i = next;
2700         }
2701
2702         apply_diff ();
2703 }
2704
2705 void
2706 MidiRegionView::change_note_lengths (bool fine, bool shorter, Evoral::MusicalTime delta, bool start, bool end)
2707 {
2708         if (delta == 0.0) {
2709                 if (fine) {
2710                         delta = 1.0/128.0;
2711                 } else {
2712                         /* grab the current grid distance */
2713                         bool success;
2714                         delta = trackview.editor().get_grid_type_as_beats (success, _region->position());
2715                         if (!success) {
2716                                 /* XXX cannot get grid type as beats ... should always be possible ... FIX ME */
2717                                 cerr << "Grid type not available as beats - TO BE FIXED\n";
2718                                 return;
2719                         }
2720                 }
2721         }
2722
2723         if (shorter) {
2724                 delta = -delta;
2725         }
2726
2727         start_note_diff_command (_("change note lengths"));
2728
2729         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2730                 Selection::iterator next = i;
2731                 ++next;
2732
2733                 /* note the negation of the delta for start */
2734
2735                 trim_note (*i, (start ? -delta : 0), (end ? delta : 0));
2736                 i = next;
2737         }
2738
2739         apply_diff ();
2740
2741 }
2742
2743 void
2744 MidiRegionView::nudge_notes (bool forward)
2745 {
2746         if (_selection.empty()) {
2747                 return;
2748         }
2749
2750         /* pick a note as the point along the timeline to get the nudge distance.
2751            its not necessarily the earliest note, so we may want to pull the notes out
2752            into a vector and sort before using the first one.
2753         */
2754
2755         framepos_t ref_point = _region->position() + beats_to_frames ((*(_selection.begin()))->note()->time());
2756         framepos_t unused;
2757         framepos_t distance;
2758
2759         if (trackview.editor().snap_mode() == Editing::SnapOff) {
2760
2761                 /* grid is off - use nudge distance */
2762
2763                 distance = trackview.editor().get_nudge_distance (ref_point, unused);
2764
2765         } else {
2766
2767                 /* use grid */
2768
2769                 framepos_t next_pos = ref_point;
2770
2771                 if (forward) {
2772                         if (max_framepos - 1 < next_pos) {
2773                                 next_pos += 1;
2774                         }
2775                 } else {
2776                         if (next_pos == 0) {
2777                                 return;
2778                         }
2779                         next_pos -= 1;
2780                 }
2781
2782                 trackview.editor().snap_to (next_pos, (forward ? 1 : -1), false);
2783                 distance = ref_point - next_pos;
2784         }
2785
2786         if (distance == 0) {
2787                 return;
2788         }
2789
2790         Evoral::MusicalTime delta = frames_to_beats (fabs (distance));
2791
2792         if (!forward) {
2793                 delta = -delta;
2794         }
2795
2796         start_note_diff_command (_("nudge"));
2797
2798         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2799                 Selection::iterator next = i;
2800                 ++next;
2801                 change_note_time (*i, delta, true);
2802                 i = next;
2803         }
2804
2805         apply_diff ();
2806 }
2807
2808 void
2809 MidiRegionView::change_channel(uint8_t channel)
2810 {
2811         start_note_diff_command(_("change channel"));
2812         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2813                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::Channel, channel);
2814         }
2815
2816         apply_diff();
2817 }
2818
2819
2820 void
2821 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
2822 {
2823         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
2824
2825         _pre_enter_cursor = editor->get_canvas_cursor ();
2826
2827         if (_mouse_state == SelectTouchDragging) {
2828                 note_selected (ev, true);
2829         }
2830
2831         show_verbose_cursor (ev->note ());
2832 }
2833
2834 void
2835 MidiRegionView::note_left (ArdourCanvas::CanvasNoteEvent*)
2836 {
2837         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
2838
2839         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2840                 (*i)->hide_velocity ();
2841         }
2842
2843         editor->verbose_cursor()->hide ();
2844
2845         if (_pre_enter_cursor) {
2846                 editor->set_canvas_cursor (_pre_enter_cursor);
2847                 _pre_enter_cursor = 0;
2848         }
2849 }
2850
2851 void
2852 MidiRegionView::patch_entered (ArdourCanvas::CanvasPatchChange* ev)
2853 {
2854         ostringstream s;
2855         s << ((int) ev->patch()->program() + 1) << ":" << (ev->patch()->bank() + 1);
2856         show_verbose_cursor (s.str(), 10, 20);
2857 }
2858
2859 void
2860 MidiRegionView::patch_left (ArdourCanvas::CanvasPatchChange *)
2861 {
2862         trackview.editor().verbose_cursor()->hide ();
2863 }
2864
2865 void
2866 MidiRegionView::note_mouse_position (float x_fraction, float /*y_fraction*/, bool can_set_cursor)
2867 {
2868         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
2869
2870         if (x_fraction > 0.0 && x_fraction < 0.25) {
2871                 editor->set_canvas_cursor (editor->cursors()->left_side_trim);
2872         } else if (x_fraction >= 0.75 && x_fraction < 1.0) {
2873                 editor->set_canvas_cursor (editor->cursors()->right_side_trim);
2874         } else {
2875                 if (_pre_enter_cursor && can_set_cursor) {
2876                         editor->set_canvas_cursor (_pre_enter_cursor);
2877                 }
2878         }
2879 }
2880
2881 void
2882 MidiRegionView::set_frame_color()
2883 {
2884         uint32_t f;
2885
2886         TimeAxisViewItem::set_frame_color ();
2887
2888         if (!frame) {
2889                 return;
2890         }
2891
2892         if (_selected) {
2893                 f = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
2894         } else if (high_enough_for_name) {
2895                 f= ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
2896         } else {
2897                 f = fill_color;
2898         }
2899
2900         if (!rect_visible) {
2901                 f = UINT_RGBA_CHANGE_A (f, 0);
2902         }
2903
2904         frame->property_fill_color_rgba() = f;
2905 }
2906
2907 void
2908 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
2909 {
2910         switch (mode) {
2911         case AllChannels:
2912         case FilterChannels:
2913                 _force_channel = -1;
2914                 break;
2915         case ForceChannel:
2916                 _force_channel = mask;
2917                 mask = 0xFFFF; // Show all notes as active (below)
2918         };
2919
2920         // Update notes for selection
2921         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2922                 (*i)->on_channel_selection_change(mask);
2923         }
2924
2925         _last_channel_selection = mask;
2926
2927         _patch_changes.clear ();
2928         display_patch_changes ();
2929 }
2930
2931 void
2932 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
2933 {
2934         _model_name         = model;
2935         _custom_device_mode = custom_device_mode;
2936         redisplay_model();
2937 }
2938
2939 void
2940 MidiRegionView::cut_copy_clear (Editing::CutCopyOp op)
2941 {
2942         if (_selection.empty()) {
2943                 return;
2944         }
2945
2946         PublicEditor& editor (trackview.editor());
2947
2948         switch (op) {
2949         case Cut:
2950         case Copy:
2951                 editor.get_cut_buffer().add (selection_as_cut_buffer());
2952                 break;
2953         default:
2954                 break;
2955         }
2956
2957         if (op != Copy) {
2958
2959                 start_note_diff_command();
2960
2961                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2962                         switch (op) {
2963                         case Copy:
2964                                 break;
2965                         case Cut:
2966                         case Clear:
2967                                 note_diff_remove_note (*i);
2968                                 break;
2969                         }
2970                 }
2971
2972                 apply_diff();
2973         }
2974 }
2975
2976 MidiCutBuffer*
2977 MidiRegionView::selection_as_cut_buffer () const
2978 {
2979         Notes notes;
2980
2981         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2982                 NoteType* n = (*i)->note().get();
2983                 notes.insert (boost::shared_ptr<NoteType> (new NoteType (*n)));
2984         }
2985
2986         MidiCutBuffer* cb = new MidiCutBuffer (trackview.session());
2987         cb->set (notes);
2988
2989         return cb;
2990 }
2991
2992 /** This method handles undo */
2993 void
2994 MidiRegionView::paste (framepos_t pos, float times, const MidiCutBuffer& mcb)
2995 {
2996         if (mcb.empty()) {
2997                 return;
2998         }
2999
3000         DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("MIDI paste @ %1 times %2\n", pos, times));
3001
3002         trackview.session()->begin_reversible_command (_("paste"));
3003
3004         start_note_diff_command (_("paste"));
3005
3006         Evoral::MusicalTime beat_delta;
3007         Evoral::MusicalTime paste_pos_beats;
3008         Evoral::MusicalTime duration;
3009         Evoral::MusicalTime end_point = 0;
3010
3011         duration = (*mcb.notes().rbegin())->end_time() - (*mcb.notes().begin())->time();
3012         paste_pos_beats = frames_to_beats (pos - _region->position());
3013         beat_delta = (*mcb.notes().begin())->time() - paste_pos_beats;
3014         paste_pos_beats = 0;
3015
3016         DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("Paste data spans from %1 to %2 (%3) ; paste pos beats = %4 (based on %5 - %6 ; beat delta = %7\n",
3017                                                        (*mcb.notes().begin())->time(),
3018                                                        (*mcb.notes().rbegin())->end_time(),
3019                                                        duration, pos, _region->position(),
3020                                                        paste_pos_beats, beat_delta));
3021
3022         clear_selection ();
3023
3024         for (int n = 0; n < (int) times; ++n) {
3025
3026                 for (Notes::const_iterator i = mcb.notes().begin(); i != mcb.notes().end(); ++i) {
3027
3028                         boost::shared_ptr<NoteType> copied_note (new NoteType (*((*i).get())));
3029                         copied_note->set_time (paste_pos_beats + copied_note->time() - beat_delta);
3030
3031                         /* make all newly added notes selected */
3032
3033                         note_diff_add_note (copied_note, true);
3034                         end_point = copied_note->end_time();
3035                 }
3036
3037                 paste_pos_beats += duration;
3038         }
3039
3040         /* if we pasted past the current end of the region, extend the region */
3041
3042         framepos_t end_frame = _region->position() + beats_to_frames (end_point);
3043         framepos_t region_end = _region->position() + _region->length() - 1;
3044
3045         if (end_frame > region_end) {
3046
3047                 DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("Paste extended region from %1 to %2\n", region_end, end_frame));
3048
3049                 _region->clear_changes ();
3050                 _region->set_length (end_frame);
3051                 trackview.session()->add_command (new StatefulDiffCommand (_region));
3052         }
3053
3054         apply_diff (true);
3055
3056         trackview.session()->commit_reversible_command ();
3057 }
3058
3059 struct EventNoteTimeEarlyFirstComparator {
3060         bool operator() (CanvasNoteEvent* a, CanvasNoteEvent* b) {
3061                 return a->note()->time() < b->note()->time();
3062         }
3063 };
3064
3065 void
3066 MidiRegionView::time_sort_events ()
3067 {
3068         if (!_sort_needed) {
3069                 return;
3070         }
3071
3072         EventNoteTimeEarlyFirstComparator cmp;
3073         _events.sort (cmp);
3074
3075         _sort_needed = false;
3076 }
3077
3078 void
3079 MidiRegionView::goto_next_note ()
3080 {
3081         // framepos_t pos = -1;
3082         bool use_next = false;
3083
3084         if (_events.back()->selected()) {
3085                 return;
3086         }
3087
3088         time_sort_events ();
3089
3090         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3091                 if ((*i)->selected()) {
3092                         use_next = true;
3093                         continue;
3094                 } else if (use_next) {
3095                         unique_select (*i);
3096                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
3097                         return;
3098                 }
3099         }
3100
3101         /* use the first one */
3102
3103         unique_select (_events.front());
3104
3105 }
3106
3107 void
3108 MidiRegionView::goto_previous_note ()
3109 {
3110         // framepos_t pos = -1;
3111         bool use_next = false;
3112
3113         if (_events.front()->selected()) {
3114                 return;
3115         }
3116
3117         time_sort_events ();
3118
3119         for (Events::reverse_iterator i = _events.rbegin(); i != _events.rend(); ++i) {
3120                 if ((*i)->selected()) {
3121                         use_next = true;
3122                         continue;
3123                 } else if (use_next) {
3124                         unique_select (*i);
3125                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
3126                         return;
3127                 }
3128         }
3129
3130         /* use the last one */
3131
3132         unique_select (*(_events.rbegin()));
3133 }
3134
3135 void
3136 MidiRegionView::selection_as_notelist (Notes& selected, bool allow_all_if_none_selected)
3137 {
3138         bool had_selected = false;
3139
3140         time_sort_events ();
3141
3142         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3143                 if ((*i)->selected()) {
3144                         selected.insert ((*i)->note());
3145                         had_selected = true;
3146                 }
3147         }
3148
3149         if (allow_all_if_none_selected && !had_selected) {
3150                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3151                         selected.insert ((*i)->note());
3152                 }
3153         }
3154 }
3155
3156 void
3157 MidiRegionView::update_ghost_note (double x, double y)
3158 {
3159         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3160
3161         _last_ghost_x = x;
3162         _last_ghost_y = y;
3163
3164         _note_group->w2i (x, y);
3165         framepos_t const f = snap_pixel_to_frame (x);
3166
3167         bool success;
3168         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, f);
3169
3170         if (!success) {
3171                 beats = 1;
3172         }
3173
3174         double length = frames_to_beats (snap_frame_to_frame (f + beats_to_frames (beats)) - f);
3175
3176         _ghost_note->note()->set_time (frames_to_beats (f + _region->start()));
3177         _ghost_note->note()->set_length (length);
3178         _ghost_note->note()->set_note (midi_stream_view()->y_to_note (y));
3179         _ghost_note->note()->set_channel (mtv->get_channel_for_add ());
3180
3181         /* the ghost note does not appear in ghost regions, so pass false in here */
3182         update_note (_ghost_note, false);
3183
3184         show_verbose_cursor (_ghost_note->note ());
3185 }
3186
3187 void
3188 MidiRegionView::create_ghost_note (double x, double y)
3189 {
3190         delete _ghost_note;
3191         _ghost_note = 0;
3192
3193         boost::shared_ptr<NoteType> g (new NoteType);
3194         _ghost_note = new NoEventCanvasNote (*this, *_note_group, g);
3195         _ghost_note->property_outline_color_rgba() = 0x000000aa;
3196         update_ghost_note (x, y);
3197         _ghost_note->show ();
3198
3199         _last_ghost_x = x;
3200         _last_ghost_y = y;
3201
3202         show_verbose_cursor (_ghost_note->note ());
3203 }
3204
3205 void
3206 MidiRegionView::snap_changed ()
3207 {
3208         if (!_ghost_note) {
3209                 return;
3210         }
3211
3212         create_ghost_note (_last_ghost_x, _last_ghost_y);
3213 }
3214
3215 void
3216 MidiRegionView::drop_down_keys ()
3217 {
3218         _mouse_state = None;
3219 }
3220
3221 void
3222 MidiRegionView::maybe_select_by_position (GdkEventButton* ev, double /*x*/, double y)
3223 {
3224         double note = midi_stream_view()->y_to_note(y);
3225         Events e;
3226         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3227
3228         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
3229
3230         if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
3231                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchGreaterThanOrEqual, (uint8_t) floor (note), chn_mask);
3232         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
3233                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchLessThanOrEqual, (uint8_t) floor (note), chn_mask);
3234         } else {
3235                 return;
3236         }
3237
3238         bool add_mrv_selection = false;
3239
3240         if (_selection.empty()) {
3241                 add_mrv_selection = true;
3242         }
3243
3244         for (Events::iterator i = e.begin(); i != e.end(); ++i) {
3245                 if (_selection.insert (*i).second) {
3246                         (*i)->set_selected (true);
3247                 }
3248         }
3249
3250         if (add_mrv_selection) {
3251                 PublicEditor& editor (trackview.editor());
3252                 editor.get_selection().add (this);
3253         }
3254 }
3255
3256 void
3257 MidiRegionView::color_handler ()
3258 {
3259         RegionView::color_handler ();
3260
3261         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3262                 (*i)->set_selected ((*i)->selected()); // will change color
3263         }
3264
3265         /* XXX probably more to do here */
3266 }
3267
3268 void
3269 MidiRegionView::enable_display (bool yn)
3270 {
3271         RegionView::enable_display (yn);
3272         if (yn) {
3273                 redisplay_model ();
3274         }
3275 }
3276
3277 void
3278 MidiRegionView::show_step_edit_cursor (Evoral::MusicalTime pos)
3279 {
3280         if (_step_edit_cursor == 0) {
3281                 ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
3282
3283                 _step_edit_cursor = new ArdourCanvas::SimpleRect (*group);
3284                 _step_edit_cursor->property_y1() = 0;
3285                 _step_edit_cursor->property_y2() = midi_stream_view()->contents_height();
3286                 _step_edit_cursor->property_fill_color_rgba() = RGBA_TO_UINT (45,0,0,90);
3287                 _step_edit_cursor->property_outline_color_rgba() = RGBA_TO_UINT (85,0,0,90);
3288         }
3289
3290         move_step_edit_cursor (pos);
3291         _step_edit_cursor->show ();
3292 }
3293
3294 void
3295 MidiRegionView::move_step_edit_cursor (Evoral::MusicalTime pos)
3296 {
3297         _step_edit_cursor_position = pos;
3298
3299         if (_step_edit_cursor) {
3300                 double pixel = trackview.editor().frame_to_pixel (beats_to_frames (pos));
3301                 _step_edit_cursor->property_x1() = pixel;
3302                 set_step_edit_cursor_width (_step_edit_cursor_width);
3303         }
3304 }
3305
3306 void
3307 MidiRegionView::hide_step_edit_cursor ()
3308 {
3309         if (_step_edit_cursor) {
3310                 _step_edit_cursor->hide ();
3311         }
3312 }
3313
3314 void
3315 MidiRegionView::set_step_edit_cursor_width (Evoral::MusicalTime beats)
3316 {
3317         _step_edit_cursor_width = beats;
3318
3319         if (_step_edit_cursor) {
3320                 _step_edit_cursor->property_x2() = _step_edit_cursor->property_x1() + trackview.editor().frame_to_pixel (beats_to_frames (beats));
3321         }
3322 }
3323
3324 /** Called when a diskstream on our track has received some data.  Update the view, if applicable.
3325  *  @param buf Data that has been recorded.
3326  *  @param w Source that this data will end up in.
3327  */
3328 void
3329 MidiRegionView::data_recorded (boost::shared_ptr<MidiBuffer> buf, boost::weak_ptr<MidiSource> w)
3330 {
3331         if (!_active_notes) {
3332                 /* we aren't actively being recorded to */
3333                 return;
3334         }
3335
3336         boost::shared_ptr<MidiSource> src = w.lock ();
3337         if (!src || src != midi_region()->midi_source()) {
3338                 /* recorded data was not destined for our source */
3339                 return;
3340         }
3341
3342         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&trackview);
3343         BeatsFramesConverter converter (trackview.session()->tempo_map(), mtv->midi_track()->get_capture_start_frame (0));
3344
3345         framepos_t back = max_framepos;
3346
3347         for (MidiBuffer::iterator i = buf->begin(); i != buf->end(); ++i) {
3348                 Evoral::MIDIEvent<MidiBuffer::TimeType> const ev (*i, false);
3349                 assert (ev.buffer ());
3350
3351                 Evoral::MusicalTime const time_beats = converter.from (ev.time () - converter.origin_b ());
3352
3353                 if (ev.type() == MIDI_CMD_NOTE_ON) {
3354
3355                         boost::shared_ptr<NoteType> note (
3356                                 new NoteType (ev.channel(), time_beats, 0, ev.note(), ev.velocity())
3357                                                           );
3358
3359                         add_note (note, true);
3360
3361                         /* fix up our note range */
3362                         if (ev.note() < _current_range_min) {
3363                                 midi_stream_view()->apply_note_range (ev.note(), _current_range_max, true);
3364                         } else if (ev.note() > _current_range_max) {
3365                                 midi_stream_view()->apply_note_range (_current_range_min, ev.note(), true);
3366                         }
3367
3368                 } else if (ev.type() == MIDI_CMD_NOTE_OFF) {
3369                         resolve_note (ev.note (), time_beats);
3370                 }
3371
3372                 back = ev.time ();
3373         }
3374
3375         midi_stream_view()->check_record_layers (region(), back);
3376 }
3377
3378 void
3379 MidiRegionView::trim_front_starting ()
3380 {
3381         /* Reparent the note group to the region view's parent, so that it doesn't change
3382            when the region view is trimmed.
3383         */
3384         _temporary_note_group = new ArdourCanvas::Group (*group->property_parent ());
3385         _temporary_note_group->move (group->property_x(), group->property_y());
3386         _note_group->reparent (*_temporary_note_group);
3387 }
3388
3389 void
3390 MidiRegionView::trim_front_ending ()
3391 {
3392         _note_group->reparent (*group);
3393         delete _temporary_note_group;
3394         _temporary_note_group = 0;
3395
3396         if (_region->start() < 0) {
3397                 /* Trim drag made start time -ve; fix this */
3398                 midi_region()->fix_negative_start ();
3399         }
3400 }
3401
3402 void
3403 MidiRegionView::edit_patch_change (ArdourCanvas::CanvasPatchChange* pc)
3404 {
3405         PatchChangeDialog d (&_time_converter, trackview.session(), *pc->patch (), Gtk::Stock::APPLY);
3406         if (d.run () != Gtk::RESPONSE_ACCEPT) {
3407                 return;
3408         }
3409
3410         change_patch_change (pc->patch(), d.patch ());
3411 }
3412
3413
3414 void
3415 MidiRegionView::show_verbose_cursor (boost::shared_ptr<NoteType> n) const
3416 {
3417         char buf[24];
3418         snprintf (buf, sizeof (buf), "%s (%d) Chn %d\nVel %d",
3419                   Evoral::midi_note_name (n->note()).c_str(),
3420                   (int) n->note (),
3421                   (int) n->channel() + 1,
3422                   (int) n->velocity());
3423
3424         show_verbose_cursor (buf, 10, 20);
3425 }
3426
3427 void
3428 MidiRegionView::show_verbose_cursor (string const & text, double xoffset, double yoffset) const
3429 {
3430         double wx, wy;
3431
3432         trackview.editor().get_pointer_position (wx, wy);
3433
3434         wx += xoffset;
3435         wy += yoffset;
3436
3437         /* Flip the cursor above the mouse pointer if it would overlap the bottom of the canvas */
3438
3439         double x1, y1, x2, y2;
3440         trackview.editor().verbose_cursor()->canvas_item()->get_bounds (x1, y1, x2, y2);
3441
3442         if ((wy + y2 - y1) > trackview.editor().canvas_height()) {
3443                 wy -= (y2 - y1) + 2 * yoffset;
3444         }
3445
3446         trackview.editor().verbose_cursor()->set (text, wx, wy);
3447         trackview.editor().verbose_cursor()->show ();
3448 }