gtk2_ardour/midi_region_view.cc

   1 /*
   2     Copyright (C) 2001-2007 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
  73 #include "i18n.h"
  74
  75 using namespace ARDOUR;
  76 using namespace PBD;
  77 using namespace Editing;
  78 using namespace ArdourCanvas;
  79 using Gtkmm2ext::Keyboard;
  80
  81 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
  82                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color const & basic_color)
  83         : RegionView (parent, tv, r, spu, basic_color)
  84         , _force_channel(-1)
  85         , _last_channel_selection(0xFFFF)
  86         , _current_range_min(0)
  87         , _current_range_max(0)
  88         , _model_name(string())
  89         , _custom_device_mode(string())
  90         , _active_notes(0)
  91         , _note_group(new ArdourCanvas::Group(*group))
  92         , _note_diff_command (0)
  93         , _ghost_note(0)
  94         , _drag_rect (0)
  95         , _step_edit_cursor (0)
  96         , _step_edit_cursor_width (1.0)
  97         , _step_edit_cursor_position (0.0)
  98         , _channel_selection_scoped_note (0)
  99         , _temporary_note_group (0)
 100         , _mouse_state(None)
 101         , _pressed_button(0)
 102         , _sort_needed (true)
 103         , _optimization_iterator (_events.end())
 104         , _list_editor (0)
 105         , no_sound_notes (false)
 106         , _last_event_x (0)
 107         , _last_event_y (0)
 108         , pre_enter_cursor (0)
 109 {
 110         _note_group->raise_to_top();
 111         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 112
 113         connect_to_diskstream ();
 114 }
 115
 116 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
 117                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color,
 118                 TimeAxisViewItem::Visibility visibility)
 119         : RegionView (parent, tv, r, spu, basic_color, false, visibility)
 120         , _force_channel(-1)
 121         , _last_channel_selection(0xFFFF)
 122         , _model_name(string())
 123         , _custom_device_mode(string())
 124         , _active_notes(0)
 125         , _note_group(new ArdourCanvas::Group(*parent))
 126         , _note_diff_command (0)
 127         , _ghost_note(0)
 128         , _drag_rect (0)
 129         , _step_edit_cursor (0)
 130         , _step_edit_cursor_width (1.0)
 131         , _step_edit_cursor_position (0.0)
 132         , _channel_selection_scoped_note (0)
 133         , _temporary_note_group (0)
 134         , _mouse_state(None)
 135         , _pressed_button(0)
 136         , _sort_needed (true)
 137         , _optimization_iterator (_events.end())
 138         , _list_editor (0)
 139         , no_sound_notes (false)
 140         , _last_event_x (0)
 141         , _last_event_y (0)
 142 {
 143         _note_group->raise_to_top();
 144         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 145
 146         connect_to_diskstream ();
 147 }
 148
 149 MidiRegionView::MidiRegionView (const MidiRegionView& other)
 150         : sigc::trackable(other)
 151         , RegionView (other)
 152         , _force_channel(-1)
 153         , _last_channel_selection(0xFFFF)
 154         , _model_name(string())
 155         , _custom_device_mode(string())
 156         , _active_notes(0)
 157         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 158         , _note_diff_command (0)
 159         , _ghost_note(0)
 160         , _drag_rect (0)
 161         , _step_edit_cursor (0)
 162         , _step_edit_cursor_width (1.0)
 163         , _step_edit_cursor_position (0.0)
 164         , _channel_selection_scoped_note (0)
 165         , _temporary_note_group (0)
 166         , _mouse_state(None)
 167         , _pressed_button(0)
 168         , _sort_needed (true)
 169         , _optimization_iterator (_events.end())
 170         , _list_editor (0)
 171         , no_sound_notes (false)
 172         , _last_event_x (0)
 173         , _last_event_y (0)
 174 {
 175         Gdk::Color c;
 176         int r,g,b,a;
 177
 178         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 179         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 180
 181         init (c, false);
 182 }
 183
 184 MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<MidiRegion> region)
 185         : RegionView (other, boost::shared_ptr<Region> (region))
 186         , _force_channel(-1)
 187         , _last_channel_selection(0xFFFF)
 188         , _model_name(string())
 189         , _custom_device_mode(string())
 190         , _active_notes(0)
 191         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 192         , _note_diff_command (0)
 193         , _ghost_note(0)
 194         , _drag_rect (0)
 195         , _step_edit_cursor (0)
 196         , _step_edit_cursor_width (1.0)
 197         , _step_edit_cursor_position (0.0)
 198         , _channel_selection_scoped_note (0)
 199         , _temporary_note_group (0)
 200         , _mouse_state(None)
 201         , _pressed_button(0)
 202         , _sort_needed (true)
 203         , _optimization_iterator (_events.end())
 204         , _list_editor (0)
 205         , no_sound_notes (false)
 206         , _last_event_x (0)
 207         , _last_event_y (0)
 208 {
 209         Gdk::Color c;
 210         int r,g,b,a;
 211
 212         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 213         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 214
 215         init (c, true);
 216 }
 217
 218 void
 219 MidiRegionView::init (Gdk::Color const & basic_color, bool wfd)
 220 {
 221         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 222
 223         CanvasNoteEvent::CanvasNoteEventDeleted.connect (note_delete_connection, MISSING_INVALIDATOR,
 224                                                          ui_bind (&MidiRegionView::maybe_remove_deleted_note_from_selection, this, _1),
 225                                                          gui_context());
 226
 227         if (wfd) {
 228                 midi_region()->midi_source(0)->load_model();
 229         }
 230
 231         _model = midi_region()->midi_source(0)->model();
 232         _enable_display = false;
 233
 234         RegionView::init (basic_color, false);
 235
 236         compute_colors (basic_color);
 237
 238         set_height (trackview.current_height());
 239
 240         region_muted ();
 241         region_sync_changed ();
 242         region_resized (ARDOUR::bounds_change);
 243         region_locked ();
 244
 245         reset_width_dependent_items (_pixel_width);
 246
 247         set_colors ();
 248
 249         _enable_display = true;
 250         if (_model) {
 251                 if (wfd) {
 252                         display_model (_model);
 253                 }
 254         }
 255
 256         group->raise_to_top();
 257         group->signal_event().connect (sigc::mem_fun (this, &MidiRegionView::canvas_event), false);
 258
 259         midi_view()->signal_channel_mode_changed().connect(
 260                         sigc::mem_fun(this, &MidiRegionView::midi_channel_mode_changed));
 261
 262         midi_view()->signal_midi_patch_settings_changed().connect(
 263                         sigc::mem_fun(this, &MidiRegionView::midi_patch_settings_changed));
 264
 265         trackview.editor().SnapChanged.connect (snap_changed_connection, invalidator (*this), ui_bind (&MidiRegionView::snap_changed, this), gui_context ());
 266
 267         connect_to_diskstream ();
 268 }
 269
 270 void
 271 MidiRegionView::connect_to_diskstream ()
 272 {
 273         midi_view()->midi_track()->DataRecorded.connect (*this, invalidator (*this), ui_bind (&MidiRegionView::data_recorded, this, _1, _2), gui_context ());
 274 }
 275
 276 bool
 277 MidiRegionView::canvas_event(GdkEvent* ev)
 278 {
 279         switch (ev->type) {
 280         case GDK_ENTER_NOTIFY:
 281         case GDK_LEAVE_NOTIFY:
 282                 _last_event_x = ev->crossing.x;
 283                 _last_event_y = ev->crossing.y;
 284                 break;
 285         case GDK_MOTION_NOTIFY:
 286                 _last_event_x = ev->motion.x;
 287                 _last_event_y = ev->motion.y;
 288                 break;
 289         default:
 290                 break;
 291         }
 292
 293         if (!trackview.editor().internal_editing()) {
 294                 return false;
 295         }
 296
 297         switch (ev->type) {
 298         case GDK_SCROLL:
 299                 return scroll (&ev->scroll);
 300
 301         case GDK_KEY_PRESS:
 302                 return key_press (&ev->key);
 303
 304         case GDK_KEY_RELEASE:
 305                 return key_release (&ev->key);
 306
 307         case GDK_BUTTON_PRESS:
 308                 return button_press (&ev->button);
 309
 310         case GDK_2BUTTON_PRESS:
 311                 return true;
 312
 313         case GDK_BUTTON_RELEASE:
 314                 return button_release (&ev->button);
 315
 316         case GDK_ENTER_NOTIFY:
 317                 return enter_notify (&ev->crossing);
 318
 319         case GDK_LEAVE_NOTIFY:
 320                 return leave_notify (&ev->crossing);
 321
 322         case GDK_MOTION_NOTIFY:
 323                 return motion (&ev->motion);
 324
 325         default:
 326                 break;
 327         }
 328
 329         return false;
 330 }
 331
 332 void
 333 MidiRegionView::remove_ghost_note ()
 334 {
 335         delete _ghost_note;
 336         _ghost_note = 0;
 337 }
 338
 339 bool
 340 MidiRegionView::enter_notify (GdkEventCrossing* ev)
 341 {
 342         trackview.editor().MouseModeChanged.connect (
 343                 _mouse_mode_connection, invalidator (*this), ui_bind (&MidiRegionView::mouse_mode_changed, this), gui_context ()
 344                 );
 345
 346         Keyboard::magic_widget_grab_focus();
 347         group->grab_focus();
 348
 349         if (trackview.editor().current_mouse_mode() == MouseRange) {
 350                 create_ghost_note (ev->x, ev->y);
 351         }
 352
 353         return false;
 354 }
 355
 356 bool
 357 MidiRegionView::leave_notify (GdkEventCrossing*)
 358 {
 359         _mouse_mode_connection.disconnect ();
 360
 361         trackview.editor().hide_verbose_canvas_cursor ();
 362         remove_ghost_note ();
 363         return false;
 364 }
 365
 366 void
 367 MidiRegionView::mouse_mode_changed ()
 368 {
 369         if (trackview.editor().current_mouse_mode() == MouseRange && trackview.editor().internal_editing()) {
 370                 create_ghost_note (_last_event_x, _last_event_y);
 371         } else {
 372                 remove_ghost_note ();
 373                 trackview.editor().hide_verbose_canvas_cursor ();
 374         }
 375 }
 376
 377 bool
 378 MidiRegionView::button_press (GdkEventButton* ev)
 379 {
 380         if (ev->button != 1) {
 381                 return false;
 382         }
 383
 384         _last_x = ev->x;
 385         _last_y = ev->y;
 386
 387         group->w2i (_last_x, _last_y);
 388
 389         if (_mouse_state != SelectTouchDragging) {
 390
 391                 _pressed_button = ev->button;
 392                 _mouse_state = Pressed;
 393
 394                 return true;
 395         }
 396
 397         _pressed_button = ev->button;
 398
 399         return true;
 400 }
 401
 402 bool
 403 MidiRegionView::button_release (GdkEventButton* ev)
 404 {
 405         double event_x, event_y;
 406         framepos_t event_frame = 0;
 407
 408         if (ev->button != 1) {
 409                 return false;
 410         }
 411
 412         event_x = ev->x;
 413         event_y = ev->y;
 414
 415         group->w2i(event_x, event_y);
 416         group->ungrab(ev->time);
 417
 418         event_frame = trackview.editor().pixel_to_frame(event_x);
 419
 420         switch (_mouse_state) {
 421         case Pressed: // Clicked
 422
 423                 switch (trackview.editor().current_mouse_mode()) {
 424                 case MouseObject:
 425                 case MouseTimeFX:
 426                 {
 427                         clear_selection();
 428
 429                         if (Keyboard::is_insert_note_event(ev)){
 430
 431                                 double event_x, event_y;
 432
 433                                 event_x = ev->x;
 434                                 event_y = ev->y;
 435                                 group->w2i(event_x, event_y);
 436
 437                                 bool success;
 438                                 Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, trackview.editor().pixel_to_frame (event_x));
 439
 440                                 if (!success) {
 441                                         beats = 1;
 442                                 }
 443
 444                                 create_note_at (event_x, event_y, beats, true);
 445                         }
 446
 447                         break;
 448                 }
 449                 case MouseRange:
 450                 {
 451                         bool success;
 452                         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, trackview.editor().pixel_to_frame (event_x));
 453
 454                         if (!success) {
 455                                 beats = 1;
 456                         }
 457
 458                         create_note_at (event_x, event_y, beats, true);
 459
 460                         break;
 461                 }
 462                 default:
 463                         break;
 464                 }
 465
 466                 _mouse_state = None;
 467                 break;
 468
 469         case SelectRectDragging: // Select drag done
 470
 471                 _mouse_state = None;
 472                 delete _drag_rect;
 473                 _drag_rect = 0;
 474                 break;
 475
 476         case AddDragging: // Add drag done
 477
 478                 _mouse_state = None;
 479
 480                 if (Keyboard::is_insert_note_event(ev) || trackview.editor().current_mouse_mode() == MouseRange){
 481
 482                         if (_drag_rect->property_x2() > _drag_rect->property_x1() + 2) {
 483
 484                                 const double x  = _drag_rect->property_x1();
 485                                 const double length = trackview.editor().pixel_to_frame (_drag_rect->property_x2() - _drag_rect->property_x1());
 486
 487                                 create_note_at (x, _drag_rect->property_y1(), frames_to_beats(length), true);
 488                         }
 489                 }
 490
 491                 delete _drag_rect;
 492                 _drag_rect = 0;
 493
 494                 create_ghost_note (ev->x, ev->y);
 495
 496         default:
 497                 break;
 498         }
 499
 500         return false;
 501 }
 502
 503 bool
 504 MidiRegionView::motion (GdkEventMotion* ev)
 505 {
 506         double event_x, event_y;
 507         framepos_t event_frame = 0;
 508
 509         event_x = ev->x;
 510         event_y = ev->y;
 511         group->w2i(event_x, event_y);
 512
 513         // convert event_x to global frame
 514         event_frame = trackview.editor().pixel_to_frame(event_x) + _region->position();
 515         trackview.editor().snap_to(event_frame);
 516
 517         // convert event_frame back to local coordinates relative to position
 518         event_frame -= _region->position();
 519
 520         if (!_ghost_note && trackview.editor().current_mouse_mode() != MouseRange
 521                         && Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())
 522                         && _mouse_state != AddDragging){
 523
 524                 create_ghost_note (ev->x, ev->y);
 525         }
 526         else if (_ghost_note && trackview.editor().current_mouse_mode() != MouseRange
 527                         && Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())){
 528
 529                 update_ghost_note (ev->x, ev->y);
 530         }
 531         else if (_ghost_note && trackview.editor().current_mouse_mode() != MouseRange){
 532
 533                 delete _ghost_note;
 534                 _ghost_note = 0;
 535
 536                 trackview.editor().hide_verbose_canvas_cursor ();
 537         }
 538         else if (_ghost_note && trackview.editor().current_mouse_mode() == MouseRange) {
 539                 update_ghost_note (ev->x, ev->y);
 540         }
 541
 542         /* any motion immediately hides velocity text that may have been visible */
 543
 544         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 545                 (*i)->hide_velocity ();
 546         }
 547
 548         switch (_mouse_state) {
 549         case Pressed: // Maybe start a drag, if we've moved a bit
 550
 551                 if (fabs (event_x - _last_x) < 1 && fabs (event_y - _last_y) < 1) {
 552                         /* no appreciable movement since the button was pressed */
 553                         return false;
 554                 }
 555
 556                 // Select drag start
 557                 if (_pressed_button == 1 && trackview.editor().current_mouse_mode() == MouseObject
 558                         && !Keyboard::modifier_state_contains (ev->state, Keyboard::insert_note_modifier())) {
 559
 560                         group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 561                                     Gdk::Cursor(Gdk::FLEUR), ev->time);
 562
 563                         _last_x = event_x;
 564                         _last_y = event_y;
 565                         _drag_start_x = event_x;
 566                         _drag_start_y = event_y;
 567
 568                         _drag_rect = new ArdourCanvas::SimpleRect(*group);
 569                         _drag_rect->property_x1() = event_x;
 570                         _drag_rect->property_y1() = event_y;
 571                         _drag_rect->property_x2() = event_x;
 572                         _drag_rect->property_y2() = event_y;
 573                         _drag_rect->property_outline_what() = 0xFF;
 574                         _drag_rect->property_outline_color_rgba()
 575                                 = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 576                         _drag_rect->property_fill_color_rgba()
 577                                 = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 578
 579                         _mouse_state = SelectRectDragging;
 580                         return true;
 581
 582                         // Add note drag start
 583                 } else if (trackview.editor().internal_editing()) {
 584
 585                         delete _ghost_note;
 586                         _ghost_note = 0;
 587
 588                         group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 589                                     Gdk::Cursor(Gdk::FLEUR), ev->time);
 590
 591                         _last_x = event_x;
 592                         _last_y = event_y;
 593                         _drag_start_x = event_x;
 594                         _drag_start_y = event_y;
 595
 596                         _drag_rect = new ArdourCanvas::SimpleRect(*group);
 597                         _drag_rect->property_x1() = trackview.editor().frame_to_pixel(event_frame);
 598
 599                         _drag_rect->property_y1() = midi_stream_view()->note_to_y(
 600                                 midi_stream_view()->y_to_note(event_y));
 601                         _drag_rect->property_x2() = trackview.editor().frame_to_pixel(event_frame);
 602                         _drag_rect->property_y2() = _drag_rect->property_y1()
 603                                 + floor(midi_stream_view()->note_height());
 604                         _drag_rect->property_outline_what() = 0xFF;
 605                         _drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 606                         _drag_rect->property_fill_color_rgba()    = 0xFFFFFF66;
 607
 608                         _mouse_state = AddDragging;
 609
 610                         if (_ghost_note){
 611
 612                                 delete _ghost_note;
 613                                 _ghost_note = 0;
 614
 615                                 trackview.editor().hide_verbose_canvas_cursor ();
 616                         }
 617
 618                         return true;
 619                 }
 620
 621                 return false;
 622
 623         case SelectRectDragging: // Select drag motion
 624         case AddDragging: // Add note drag motion
 625
 626                 if (ev->is_hint) {
 627                         int t_x;
 628                         int t_y;
 629                         GdkModifierType state;
 630                         gdk_window_get_pointer(ev->window, &t_x, &t_y, &state);
 631                         event_x = t_x;
 632                         event_y = t_y;
 633                 }
 634
 635                 if (_mouse_state == AddDragging){
 636                         event_x = trackview.editor().frame_to_pixel(event_frame);
 637                 }
 638
 639                 if (_drag_rect) {
 640
 641                         if (event_x > _drag_start_x){
 642                                 _drag_rect->property_x2() = event_x;
 643                         }
 644                         else {
 645                                 _drag_rect->property_x1() = event_x;
 646                         }
 647                 }
 648
 649                 if (_drag_rect && _mouse_state == SelectRectDragging) {
 650
 651                   if (event_y > _drag_start_y){
 652                                 _drag_rect->property_y2() = event_y;
 653                         }
 654                         else {
 655                                 _drag_rect->property_y1() = event_y;
 656                         }
 657
 658                         update_drag_selection(_drag_start_x, event_x, _drag_start_y, event_y);
 659                 }
 660
 661                 _last_x = event_x;
 662                 _last_y = event_y;
 663
 664         case SelectTouchDragging:
 665                 return false;
 666
 667         default:
 668                 break;
 669         }
 670
 671         return false;
 672 }
 673
 674
 675 bool
 676 MidiRegionView::scroll (GdkEventScroll* ev)
 677 {
 678         if (_selection.empty()) {
 679                 return false;
 680         }
 681
 682         trackview.editor().hide_verbose_canvas_cursor ();
 683
 684         bool fine = !Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier);
 685
 686         if (ev->direction == GDK_SCROLL_UP) {
 687                 change_velocities (true, fine, false);
 688         } else if (ev->direction == GDK_SCROLL_DOWN) {
 689                 change_velocities (false, fine, false);
 690         }
 691         return true;
 692 }
 693
 694 bool
 695 MidiRegionView::key_press (GdkEventKey* ev)
 696 {
 697         /* since GTK bindings are generally activated on press, and since
 698            detectable auto-repeat is the name of the game and only sends
 699            repeated presses, carry out key actions at key press, not release.
 700         */
 701
 702         if (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R){
 703                 _mouse_state = SelectTouchDragging;
 704                 return true;
 705
 706         } else if (ev->keyval == GDK_Escape) {
 707                 clear_selection();
 708                 _mouse_state = None;
 709
 710         } else if (ev->keyval == GDK_comma || ev->keyval == GDK_period) {
 711
 712                 bool start = (ev->keyval == GDK_comma);
 713                 bool end = (ev->keyval == GDK_period);
 714                 bool shorter = Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier);
 715                 bool fine = Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 716
 717                 change_note_lengths (fine, shorter, 0.0, start, end);
 718
 719                 return true;
 720
 721         } else if (ev->keyval == GDK_Delete) {
 722
 723                 delete_selection();
 724                 return true;
 725
 726         } else if (ev->keyval == GDK_Tab) {
 727
 728                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 729                         goto_previous_note ();
 730                 } else {
 731                         goto_next_note ();
 732                 }
 733                 return true;
 734
 735         } else if (ev->keyval == GDK_Up) {
 736
 737                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 738                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 739
 740                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 741                         change_velocities (true, fine, allow_smush);
 742                 } else {
 743                         transpose (true, fine, allow_smush);
 744                 }
 745                 return true;
 746
 747         } else if (ev->keyval == GDK_Down) {
 748
 749                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 750                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 751
 752                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 753                         change_velocities (false, fine, allow_smush);
 754                 } else {
 755                         transpose (false, fine, allow_smush);
 756                 }
 757                 return true;
 758
 759         } else if (ev->keyval == GDK_Left) {
 760
 761                 nudge_notes (false);
 762                 return true;
 763
 764         } else if (ev->keyval == GDK_Right) {
 765
 766                 nudge_notes (true);
 767                 return true;
 768
 769         } else if (ev->keyval == GDK_Control_L) {
 770                 return true;
 771
 772         }
 773
 774         return false;
 775 }
 776
 777 bool
 778 MidiRegionView::key_release (GdkEventKey* ev)
 779 {
 780         if (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R) {
 781                 _mouse_state = None;
 782                 return true;
 783         }
 784         return false;
 785 }
 786
 787 void
 788 MidiRegionView::show_list_editor ()
 789 {
 790         if (!_list_editor) {
 791                 _list_editor = new MidiListEditor (trackview.session(), midi_region());
 792         }
 793         _list_editor->present ();
 794 }
 795
 796 /** Add a note to the model, and the view, at a canvas (click) coordinate.
 797  * \param x horizontal position in pixels
 798  * \param y vertical position in pixels
 799  * \param length duration of the note in beats, which will be snapped to the grid
 800  * \param sh true to make the note 1 frame shorter than the snapped version of \a length.
 801  */
 802 void
 803 MidiRegionView::create_note_at(double x, double y, double length, bool sh)
 804 {
 805         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 806         MidiStreamView* const view = mtv->midi_view();
 807
 808         double note = view->y_to_note(y);
 809
 810         assert(note >= 0.0);
 811         assert(note <= 127.0);
 812
 813         // Start of note in frames relative to region start
 814         framepos_t const start_frames = snap_frame_to_frame(trackview.editor().pixel_to_frame(x));
 815         assert(start_frames >= 0);
 816
 817         // Snap length
 818         length = frames_to_beats(
 819                         snap_frame_to_frame(start_frames + beats_to_frames(length)) - start_frames);
 820
 821         assert (length != 0);
 822
 823         if (sh) {
 824                 length = frames_to_beats (beats_to_frames (length) - 1);
 825         }
 826
 827         const boost::shared_ptr<NoteType> new_note (new NoteType (get_channel_for_add (),
 828                                                                   frames_to_beats(start_frames + _region->start()), length,
 829                                                                   (uint8_t)note, 0x40));
 830
 831         if (_model->contains (new_note)) {
 832                 return;
 833         }
 834
 835         view->update_note_range(new_note->note());
 836
 837         MidiModel::NoteDiffCommand* cmd = _model->new_note_diff_command("add note");
 838         cmd->add (new_note);
 839         _model->apply_command(*trackview.session(), cmd);
 840
 841         play_midi_note (new_note);
 842 }
 843
 844 void
 845 MidiRegionView::clear_events()
 846 {
 847         clear_selection();
 848
 849         MidiGhostRegion* gr;
 850         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 851                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 852                         gr->clear_events();
 853                 }
 854         }
 855
 856         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 857                 delete *i;
 858         }
 859
 860         _events.clear();
 861         _patch_changes.clear();
 862         _sys_exes.clear();
 863         _optimization_iterator = _events.end();
 864 }
 865
 866 void
 867 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 868 {
 869         _model = model;
 870
 871         content_connection.disconnect ();
 872         _model->ContentsChanged.connect (content_connection, invalidator (*this), boost::bind (&MidiRegionView::redisplay_model, this), gui_context());
 873
 874         clear_events ();
 875
 876         if (_enable_display) {
 877                 redisplay_model();
 878         }
 879 }
 880
 881 void
 882 MidiRegionView::start_note_diff_command (string name)
 883 {
 884         if (!_note_diff_command) {
 885                 _note_diff_command = _model->new_note_diff_command (name);
 886         }
 887 }
 888
 889 void
 890 MidiRegionView::note_diff_add_note (const boost::shared_ptr<NoteType> note, bool selected, bool show_velocity)
 891 {
 892         if (_note_diff_command) {
 893                 _note_diff_command->add (note);
 894         }
 895         if (selected) {
 896                 _marked_for_selection.insert(note);
 897         }
 898         if (show_velocity) {
 899                 _marked_for_velocity.insert(note);
 900         }
 901 }
 902
 903 void
 904 MidiRegionView::note_diff_remove_note (ArdourCanvas::CanvasNoteEvent* ev)
 905 {
 906         if (_note_diff_command && ev->note()) {
 907                 _note_diff_command->remove(ev->note());
 908         }
 909 }
 910
 911 void
 912 MidiRegionView::note_diff_add_change (ArdourCanvas::CanvasNoteEvent* ev,
 913                                       MidiModel::NoteDiffCommand::Property property,
 914                                       uint8_t val)
 915 {
 916         if (_note_diff_command) {
 917                 _note_diff_command->change (ev->note(), property, val);
 918         }
 919 }
 920
 921 void
 922 MidiRegionView::note_diff_add_change (ArdourCanvas::CanvasNoteEvent* ev,
 923                                       MidiModel::NoteDiffCommand::Property property,
 924                                       Evoral::MusicalTime val)
 925 {
 926         if (_note_diff_command) {
 927                 _note_diff_command->change (ev->note(), property, val);
 928         }
 929 }
 930
 931 void
 932 MidiRegionView::apply_diff (bool as_subcommand)
 933 {
 934         bool add_or_remove;
 935
 936         if (!_note_diff_command) {
 937                 return;
 938         }
 939
 940         if ((add_or_remove = _note_diff_command->adds_or_removes())) {
 941                 // Mark all selected notes for selection when model reloads
 942                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 943                         _marked_for_selection.insert((*i)->note());
 944                 }
 945         }
 946
 947         if (as_subcommand) {
 948                 _model->apply_command_as_subcommand (*trackview.session(), _note_diff_command);
 949         } else {
 950                 _model->apply_command (*trackview.session(), _note_diff_command);
 951         }
 952
 953         _note_diff_command = 0;
 954         midi_view()->midi_track()->playlist_modified();
 955
 956         if (add_or_remove) {
 957                 _marked_for_selection.clear();
 958         }
 959
 960         _marked_for_velocity.clear();
 961 }
 962
 963 void
 964 MidiRegionView::abort_command()
 965 {
 966         delete _note_diff_command;
 967         _note_diff_command = 0;
 968         clear_selection();
 969 }
 970
 971 CanvasNoteEvent*
 972 MidiRegionView::find_canvas_note (boost::shared_ptr<NoteType> note)
 973 {
 974         if (_optimization_iterator != _events.end()) {
 975                 ++_optimization_iterator;
 976         }
 977
 978         if (_optimization_iterator != _events.end() && (*_optimization_iterator)->note() == note) {
 979                 return *_optimization_iterator;
 980         }
 981
 982         for (_optimization_iterator = _events.begin(); _optimization_iterator != _events.end(); ++_optimization_iterator) {
 983                 if ((*_optimization_iterator)->note() == note) {
 984                         return *_optimization_iterator;
 985                 }
 986         }
 987
 988         return 0;
 989 }
 990
 991 void
 992 MidiRegionView::get_events (Events& e, Evoral::Sequence<Evoral::MusicalTime>::NoteOperator op, uint8_t val, int chan_mask)
 993 {
 994         MidiModel::Notes notes;
 995         _model->get_notes (notes, op, val, chan_mask);
 996
 997         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
 998                 CanvasNoteEvent* cne = find_canvas_note (*n);
 999                 if (cne) {
1000                         e.push_back (cne);
1001                 }
1002         }
1003 }
1004
1005 void
1006 MidiRegionView::redisplay_model()
1007 {
1008         // Don't redisplay the model if we're currently recording and displaying that
1009         if (_active_notes) {
1010                 return;
1011         }
1012
1013         if (!_model) {
1014                 return;
1015         }
1016
1017         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1018                 (*i)->invalidate ();
1019         }
1020
1021         MidiModel::ReadLock lock(_model->read_lock());
1022
1023         MidiModel::Notes& notes (_model->notes());
1024         _optimization_iterator = _events.begin();
1025
1026         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1027
1028                 boost::shared_ptr<NoteType> note (*n);
1029                 CanvasNoteEvent* cne;
1030                 bool visible;
1031
1032                 if (note_in_region_range (note, visible)) {
1033
1034                         if ((cne = find_canvas_note (note)) != 0) {
1035
1036                                 cne->validate ();
1037
1038                                 CanvasNote* cn;
1039                                 CanvasHit* ch;
1040
1041                                 if ((cn = dynamic_cast<CanvasNote*>(cne)) != 0) {
1042                                         update_note (cn);
1043                                 } else if ((ch = dynamic_cast<CanvasHit*>(cne)) != 0) {
1044                                         update_hit (ch);
1045                                 }
1046
1047                                 if (visible) {
1048                                         cne->show ();
1049                                 } else {
1050                                         cne->hide ();
1051                                 }
1052
1053                         } else {
1054
1055                                 add_note (note, visible);
1056                         }
1057
1058                 } else {
1059
1060                         if ((cne = find_canvas_note (note)) != 0) {
1061                                 cne->validate ();
1062                                 cne->hide ();
1063                         }
1064                 }
1065         }
1066
1067
1068         /* remove note items that are no longer valid */
1069
1070         for (Events::iterator i = _events.begin(); i != _events.end(); ) {
1071                 if (!(*i)->valid ()) {
1072                         delete *i;
1073                         i = _events.erase (i);
1074                 } else {
1075                         ++i;
1076                 }
1077         }
1078
1079         _patch_changes.clear();
1080         _sys_exes.clear();
1081
1082         display_sysexes();
1083         display_patch_changes ();
1084
1085         _marked_for_selection.clear ();
1086         _marked_for_velocity.clear ();
1087
1088         /* we may have caused _events to contain things out of order (e.g. if a note
1089            moved earlier or later). we don't generally need them in time order, but
1090            make a note that a sort is required for those cases that require it.
1091         */
1092
1093         _sort_needed = true;
1094 }
1095
1096 void
1097 MidiRegionView::display_patch_changes ()
1098 {
1099         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1100         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
1101
1102         for (uint8_t i = 0; i < 16; ++i) {
1103                 if (chn_mask & (1<<i)) {
1104                         display_patch_changes_on_channel (i);
1105                 }
1106         }
1107 }
1108
1109 void
1110 MidiRegionView::display_patch_changes_on_channel (uint8_t channel)
1111 {
1112         for (MidiModel::PatchChanges::const_iterator i = _model->patch_changes().begin(); i != _model->patch_changes().end(); ++i) {
1113
1114                 if ((*i)->channel() != channel) {
1115                         continue;
1116                 }
1117
1118                 MIDI::Name::PatchPrimaryKey patch_key ((*i)->bank_msb (), (*i)->bank_lsb (), (*i)->program ());
1119
1120                 boost::shared_ptr<MIDI::Name::Patch> patch =
1121                         MIDI::Name::MidiPatchManager::instance().find_patch(
1122                                         _model_name, _custom_device_mode, channel, patch_key);
1123
1124                 if (patch != 0) {
1125                         add_canvas_patch_change (*i, patch->name());
1126                 } else {
1127                         char buf[16];
1128                         /* program and bank numbers are zero-based: convert to one-based */
1129                         snprintf (buf, 16, "%d\n%d", (*i)->program() + 1, (*i)->bank() + 1);
1130                         add_canvas_patch_change (*i, buf);
1131                 }
1132         }
1133 }
1134
1135 void
1136 MidiRegionView::display_sysexes()
1137 {
1138         for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
1139                 Evoral::MusicalTime time = (*i)->time();
1140                 assert(time >= 0);
1141
1142                 ostringstream str;
1143                 str << hex;
1144                 for (uint32_t b = 0; b < (*i)->size(); ++b) {
1145                         str << int((*i)->buffer()[b]);
1146                         if (b != (*i)->size() -1) {
1147                                 str << " ";
1148                         }
1149                 }
1150                 string text = str.str();
1151
1152                 const double x = trackview.editor().frame_to_pixel(beats_to_frames(time));
1153
1154                 double height = midi_stream_view()->contents_height();
1155
1156                 boost::shared_ptr<CanvasSysEx> sysex = boost::shared_ptr<CanvasSysEx>(
1157                                 new CanvasSysEx(*this, *_note_group, text, height, x, 1.0));
1158
1159                 // Show unless patch change is beyond the region bounds
1160                 if (time - _region->start() >= _region->length() || time < _region->start()) {
1161                         sysex->hide();
1162                 } else {
1163                         sysex->show();
1164                 }
1165
1166                 _sys_exes.push_back(sysex);
1167         }
1168 }
1169
1170
1171 MidiRegionView::~MidiRegionView ()
1172 {
1173         in_destructor = true;
1174
1175         trackview.editor().hide_verbose_canvas_cursor ();
1176
1177         note_delete_connection.disconnect ();
1178
1179         delete _list_editor;
1180
1181         RegionViewGoingAway (this); /* EMIT_SIGNAL */
1182
1183         if (_active_notes) {
1184                 end_write();
1185         }
1186
1187         _selection.clear();
1188         clear_events();
1189
1190         delete _note_group;
1191         delete _note_diff_command;
1192         delete _step_edit_cursor;
1193         delete _temporary_note_group;
1194 }
1195
1196 void
1197 MidiRegionView::region_resized (const PropertyChange& what_changed)
1198 {
1199         RegionView::region_resized(what_changed);
1200
1201         if (what_changed.contains (ARDOUR::Properties::position)) {
1202                 set_duration(_region->length(), 0);
1203                 if (_enable_display) {
1204                         redisplay_model();
1205                 }
1206         }
1207 }
1208
1209 void
1210 MidiRegionView::reset_width_dependent_items (double pixel_width)
1211 {
1212         RegionView::reset_width_dependent_items(pixel_width);
1213         assert(_pixel_width == pixel_width);
1214
1215         if (_enable_display) {
1216                 redisplay_model();
1217         }
1218
1219         move_step_edit_cursor (_step_edit_cursor_position);
1220         set_step_edit_cursor_width (_step_edit_cursor_width);
1221 }
1222
1223 void
1224 MidiRegionView::set_height (double height)
1225 {
1226         static const double FUDGE = 2.0;
1227         const double old_height = _height;
1228         RegionView::set_height(height);
1229         _height = height - FUDGE;
1230
1231         apply_note_range(midi_stream_view()->lowest_note(),
1232                          midi_stream_view()->highest_note(),
1233                          height != old_height + FUDGE);
1234
1235         if (name_pixbuf) {
1236                 name_pixbuf->raise_to_top();
1237         }
1238
1239         for (PatchChanges::iterator x = _patch_changes.begin(); x != _patch_changes.end(); ++x) {
1240                 (*x)->set_height (midi_stream_view()->contents_height());
1241         }
1242
1243         if (_step_edit_cursor) {
1244                 _step_edit_cursor->property_y2() = midi_stream_view()->contents_height();
1245         }
1246 }
1247
1248
1249 /** Apply the current note range from the stream view
1250  * by repositioning/hiding notes as necessary
1251  */
1252 void
1253 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
1254 {
1255         if (!_enable_display) {
1256                 return;
1257         }
1258
1259         if (!force && _current_range_min == min && _current_range_max == max) {
1260                 return;
1261         }
1262
1263         _current_range_min = min;
1264         _current_range_max = max;
1265
1266         for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
1267                 CanvasNoteEvent* event = *i;
1268                 boost::shared_ptr<NoteType> note (event->note());
1269
1270                 if (note->note() < _current_range_min ||
1271                     note->note() > _current_range_max) {
1272                         event->hide();
1273                 } else {
1274                         event->show();
1275                 }
1276
1277                 if (CanvasNote* cnote = dynamic_cast<CanvasNote*>(event)) {
1278
1279                         const double y1 = midi_stream_view()->note_to_y(note->note());
1280                         const double y2 = y1 + floor(midi_stream_view()->note_height());
1281
1282                         cnote->property_y1() = y1;
1283                         cnote->property_y2() = y2;
1284
1285                 } else if (CanvasHit* chit = dynamic_cast<CanvasHit*>(event)) {
1286
1287                         const double diamond_size = update_hit (chit);
1288
1289                         chit->set_height (diamond_size);
1290                 }
1291         }
1292 }
1293
1294 GhostRegion*
1295 MidiRegionView::add_ghost (TimeAxisView& tv)
1296 {
1297         CanvasNote* note;
1298
1299         double unit_position = _region->position () / samples_per_unit;
1300         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
1301         MidiGhostRegion* ghost;
1302
1303         if (mtv && mtv->midi_view()) {
1304                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group
1305                    to allow having midi notes on top of note lines and waveforms.
1306                  */
1307                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
1308         } else {
1309                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
1310         }
1311
1312         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1313                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
1314                         ghost->add_note(note);
1315                 }
1316         }
1317
1318         ghost->set_height ();
1319         ghost->set_duration (_region->length() / samples_per_unit);
1320         ghosts.push_back (ghost);
1321
1322         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&RegionView::remove_ghost, this, _1), gui_context());
1323
1324         return ghost;
1325 }
1326
1327
1328 /** Begin tracking note state for successive calls to add_event
1329  */
1330 void
1331 MidiRegionView::begin_write()
1332 {
1333         assert(!_active_notes);
1334         _active_notes = new CanvasNote*[128];
1335         for (unsigned i=0; i < 128; ++i) {
1336                 _active_notes[i] = 0;
1337         }
1338 }
1339
1340
1341 /** Destroy note state for add_event
1342  */
1343 void
1344 MidiRegionView::end_write()
1345 {
1346         delete[] _active_notes;
1347         _active_notes = 0;
1348         _marked_for_selection.clear();
1349         _marked_for_velocity.clear();
1350 }
1351
1352
1353 /** Resolve an active MIDI note (while recording).
1354  */
1355 void
1356 MidiRegionView::resolve_note(uint8_t note, double end_time)
1357 {
1358         if (midi_view()->note_mode() != Sustained) {
1359                 return;
1360         }
1361
1362         if (_active_notes && _active_notes[note]) {
1363
1364                 const framepos_t end_time_frames = beats_to_frames(end_time);
1365
1366                 _active_notes[note]->property_x2() = trackview.editor().frame_to_pixel(end_time_frames);
1367                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
1368                 _active_notes[note] = 0;
1369         }
1370 }
1371
1372
1373 /** Extend active notes to rightmost edge of region (if length is changed)
1374  */
1375 void
1376 MidiRegionView::extend_active_notes()
1377 {
1378         if (!_active_notes) {
1379                 return;
1380         }
1381
1382         for (unsigned i=0; i < 128; ++i) {
1383                 if (_active_notes[i]) {
1384                         _active_notes[i]->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1385                 }
1386         }
1387 }
1388
1389
1390 void
1391 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
1392 {
1393         if (no_sound_notes || !trackview.editor().sound_notes()) {
1394                 return;
1395         }
1396
1397         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1398
1399         if (!route_ui || !route_ui->midi_track()) {
1400                 return;
1401         }
1402
1403         NotePlayer* np = new NotePlayer (route_ui->midi_track());
1404         np->add (note);
1405         np->play ();
1406 }
1407
1408 void
1409 MidiRegionView::play_midi_chord (vector<boost::shared_ptr<NoteType> > notes)
1410 {
1411         if (no_sound_notes || !trackview.editor().sound_notes()) {
1412                 return;
1413         }
1414
1415         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1416
1417         if (!route_ui || !route_ui->midi_track()) {
1418                 return;
1419         }
1420
1421         NotePlayer* np = new NotePlayer (route_ui->midi_track());
1422
1423         for (vector<boost::shared_ptr<NoteType> >::iterator n = notes.begin(); n != notes.end(); ++n) {
1424                 np->add (*n);
1425         }
1426
1427         np->play ();
1428 }
1429
1430
1431 bool
1432 MidiRegionView::note_in_region_range(const boost::shared_ptr<NoteType> note, bool& visible) const
1433 {
1434         const framepos_t note_start_frames = beats_to_frames(note->time());
1435
1436         bool outside = (note_start_frames - _region->start() >= _region->length()) ||
1437                 (note_start_frames < _region->start());
1438
1439         visible = (note->note() >= midi_stream_view()->lowest_note()) &&
1440                 (note->note() <= midi_stream_view()->highest_note());
1441
1442         return !outside;
1443 }
1444
1445 /** Update a canvas note's size from its model note.
1446  *  @param ev Canvas note to update.
1447  *  @param update_ghost_regions true to update the note in any ghost regions that we have, otherwise false.
1448  */
1449 void
1450 MidiRegionView::update_note (CanvasNote* ev, bool update_ghost_regions)
1451 {
1452         boost::shared_ptr<NoteType> note = ev->note();
1453
1454         const framepos_t note_start_frames = beats_to_frames(note->time());
1455
1456         /* trim note display to not overlap the end of its region */
1457         const framepos_t note_end_frames = min (beats_to_frames (note->end_time()), _region->start() + _region->length());
1458
1459         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1460         const double y1 = midi_stream_view()->note_to_y(note->note());
1461         const double note_endpixel = trackview.editor().frame_to_pixel(note_end_frames - _region->start());
1462
1463         ev->property_x1() = x;
1464         ev->property_y1() = y1;
1465
1466         if (note->length() > 0) {
1467                 ev->property_x2() = note_endpixel;
1468         } else {
1469                 ev->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1470         }
1471
1472         ev->property_y2() = y1 + floor(midi_stream_view()->note_height());
1473
1474         if (note->length() == 0) {
1475                 if (_active_notes) {
1476                         assert(note->note() < 128);
1477                         // If this note is already active there's a stuck note,
1478                         // finish the old note rectangle
1479                         if (_active_notes[note->note()]) {
1480                                 CanvasNote* const old_rect = _active_notes[note->note()];
1481                                 boost::shared_ptr<NoteType> old_note = old_rect->note();
1482                                 old_rect->property_x2() = x;
1483                                 old_rect->property_outline_what() = (guint32) 0xF;
1484                         }
1485                         _active_notes[note->note()] = ev;
1486                 }
1487                 /* outline all but right edge */
1488                 ev->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
1489         } else {
1490                 /* outline all edges */
1491                 ev->property_outline_what() = (guint32) 0xF;
1492         }
1493
1494         if (update_ghost_regions) {
1495                 for (std::vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
1496                         MidiGhostRegion* gr = dynamic_cast<MidiGhostRegion*> (*i);
1497                         if (gr) {
1498                                 gr->update_note (ev);
1499                         }
1500                 }
1501         }
1502 }
1503
1504 double
1505 MidiRegionView::update_hit (CanvasHit* ev)
1506 {
1507         boost::shared_ptr<NoteType> note = ev->note();
1508
1509         const framepos_t note_start_frames = beats_to_frames(note->time());
1510         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1511         const double diamond_size = midi_stream_view()->note_height() / 2.0;
1512         const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
1513
1514         ev->move_to (x, y);
1515
1516         return diamond_size;
1517 }
1518
1519 /** Add a MIDI note to the view (with length).
1520  *
1521  * If in sustained mode, notes with length 0 will be considered active
1522  * notes, and resolve_note should be called when the corresponding note off
1523  * event arrives, to properly display the note.
1524  */
1525 void
1526 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note, bool visible)
1527 {
1528         CanvasNoteEvent* event = 0;
1529
1530         assert(note->time() >= 0);
1531         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
1532
1533         //ArdourCanvas::Group* const group = (ArdourCanvas::Group*) get_canvas_group();
1534
1535         if (midi_view()->note_mode() == Sustained) {
1536
1537                 CanvasNote* ev_rect = new CanvasNote(*this, *_note_group, note);
1538
1539                 update_note (ev_rect);
1540
1541                 event = ev_rect;
1542
1543                 MidiGhostRegion* gr;
1544
1545                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
1546                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
1547                                 gr->add_note(ev_rect);
1548                         }
1549                 }
1550
1551         } else if (midi_view()->note_mode() == Percussive) {
1552
1553                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
1554
1555                 CanvasHit* ev_diamond = new CanvasHit(*this, *_note_group, diamond_size, note);
1556
1557                 update_hit (ev_diamond);
1558
1559                 event = ev_diamond;
1560
1561         } else {
1562                 event = 0;
1563         }
1564
1565         if (event) {
1566                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
1567                         note_selected(event, true);
1568                 }
1569
1570                 if (_marked_for_velocity.find(note) != _marked_for_velocity.end()) {
1571                         event->show_velocity();
1572                 }
1573
1574                 event->on_channel_selection_change(_last_channel_selection);
1575                 _events.push_back(event);
1576
1577                 if (visible) {
1578                         event->show();
1579                 } else {
1580                         event->hide ();
1581                 }
1582         }
1583
1584         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1585         MidiStreamView* const view = mtv->midi_view();
1586
1587         view->update_note_range(note->note());
1588 }
1589
1590 void
1591 MidiRegionView::step_add_note (uint8_t channel, uint8_t number, uint8_t velocity,
1592                                Evoral::MusicalTime pos, Evoral::MusicalTime len)
1593 {
1594         boost::shared_ptr<NoteType> new_note (new NoteType (channel, pos, len, number, velocity));
1595
1596         /* potentially extend region to hold new note */
1597
1598         framepos_t end_frame = _region->position() + beats_to_frames (new_note->end_time());
1599         framepos_t region_end = _region->position() + _region->length() - 1;
1600
1601         if (end_frame > region_end) {
1602                 _region->set_length (end_frame - _region->position(), this);
1603         }
1604
1605         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1606         MidiStreamView* const view = mtv->midi_view();
1607
1608         view->update_note_range(new_note->note());
1609
1610         _marked_for_selection.clear ();
1611         clear_selection ();
1612
1613         start_note_diff_command (_("step add"));
1614         note_diff_add_note (new_note, true, false);
1615         apply_diff();
1616
1617         // last_step_edit_note = new_note;
1618 }
1619
1620 void
1621 MidiRegionView::step_sustain (Evoral::MusicalTime beats)
1622 {
1623         change_note_lengths (false, false, beats, false, true);
1624 }
1625
1626 void
1627 MidiRegionView::add_canvas_patch_change (MidiModel::PatchChangePtr patch, const string& displaytext)
1628 {
1629         assert (patch->time() >= 0);
1630
1631         const double x = trackview.editor().frame_to_pixel (beats_to_frames (patch->time()));
1632
1633         double const height = midi_stream_view()->contents_height();
1634
1635         boost::shared_ptr<CanvasPatchChange> patch_change = boost::shared_ptr<CanvasPatchChange>(
1636                 new CanvasPatchChange(*this, *_note_group,
1637                                         displaytext,
1638                                         height,
1639                                         x, 1.0,
1640                                         _model_name,
1641                                         _custom_device_mode,
1642                                         patch)
1643                 );
1644
1645         // Show unless patch change is beyond the region bounds
1646         if (patch->time() - _region->start() >= _region->length() || patch->time() < _region->start()) {
1647                 patch_change->hide();
1648         } else {
1649                 patch_change->show();
1650         }
1651
1652         _patch_changes.push_back (patch_change);
1653 }
1654
1655 void
1656 MidiRegionView::get_patch_key_at (Evoral::MusicalTime time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1657 {
1658         MidiModel::PatchChanges::iterator i = _model->patch_change_lower_bound (time);
1659         while (i != _model->patch_changes().end() && (*i)->channel() != channel) {
1660                 ++i;
1661         }
1662
1663         if (i != _model->patch_changes().end()) {
1664                 key.msb = (*i)->bank_msb ();
1665                 key.lsb = (*i)->bank_lsb ();
1666                 key.program_number = (*i)->program ();
1667         } else {
1668                 key.msb = key.lsb = key.program_number = 0;
1669         }
1670
1671         assert (key.is_sane());
1672 }
1673
1674
1675 void
1676 MidiRegionView::change_patch_change (CanvasPatchChange& pc, const MIDI::Name::PatchPrimaryKey& new_patch)
1677 {
1678         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("alter patch change"));
1679
1680         if (pc.patch()->program() != new_patch.program_number) {
1681                 c->change_program (pc.patch (), new_patch.program_number);
1682         }
1683
1684         int const new_bank = (new_patch.msb << 7) | new_patch.lsb;
1685         if (pc.patch()->bank() != new_bank) {
1686                 c->change_bank (pc.patch (), new_bank);
1687         }
1688
1689         _model->apply_command (*trackview.session(), c);
1690
1691         _patch_changes.clear ();
1692         display_patch_changes ();
1693 }
1694
1695 void
1696 MidiRegionView::change_patch_change (MidiModel::PatchChangePtr old_change, const Evoral::PatchChange<Evoral::MusicalTime> & new_change)
1697 {
1698         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("alter patch change"));
1699
1700         if (old_change->time() != new_change.time()) {
1701                 c->change_time (old_change, new_change.time());
1702         }
1703
1704         if (old_change->channel() != new_change.channel()) {
1705                 c->change_channel (old_change, new_change.channel());
1706         }
1707
1708         if (old_change->program() != new_change.program()) {
1709                 c->change_program (old_change, new_change.program());
1710         }
1711
1712         if (old_change->bank() != new_change.bank()) {
1713                 c->change_bank (old_change, new_change.bank());
1714         }
1715
1716         _model->apply_command (*trackview.session(), c);
1717
1718         _patch_changes.clear ();
1719         display_patch_changes ();
1720 }
1721
1722 /** Add a patch change to the region.
1723  *  @param t Time in frames relative to region position
1724  *  @param patch Patch to add; time and channel are ignored (time is converted from t, and channel comes from
1725  *  get_channel_for_add())
1726  */
1727 void
1728 MidiRegionView::add_patch_change (framecnt_t t, Evoral::PatchChange<Evoral::MusicalTime> const & patch)
1729 {
1730         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("add patch change"));
1731         c->add (MidiModel::PatchChangePtr (
1732                         new Evoral::PatchChange<Evoral::MusicalTime> (
1733                                 frames_to_beats (t + midi_region()->start()), get_channel_for_add(), patch.program(), patch.bank()
1734                                 )
1735                         ));
1736
1737         _model->apply_command (*trackview.session(), c);
1738
1739         _patch_changes.clear ();
1740         display_patch_changes ();
1741 }
1742
1743 void
1744 MidiRegionView::move_patch_change (CanvasPatchChange& pc, Evoral::MusicalTime t)
1745 {
1746         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("move patch change"));
1747         c->change_time (pc.patch (), t);
1748         _model->apply_command (*trackview.session(), c);
1749
1750         _patch_changes.clear ();
1751         display_patch_changes ();
1752 }
1753
1754 void
1755 MidiRegionView::delete_patch_change (CanvasPatchChange* pc)
1756 {
1757         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("delete patch change"));
1758         c->remove (pc->patch ());
1759         _model->apply_command (*trackview.session(), c);
1760
1761         _patch_changes.clear ();
1762         display_patch_changes ();
1763 }
1764
1765 void
1766 MidiRegionView::previous_patch (CanvasPatchChange& patch)
1767 {
1768         if (patch.patch()->program() < 127) {
1769                 MIDI::Name::PatchPrimaryKey key;
1770                 get_patch_key_at (patch.patch()->time(), patch.patch()->channel(), key);
1771                 key.program_number++;
1772                 change_patch_change (patch, key);
1773         }
1774 }
1775
1776 void
1777 MidiRegionView::next_patch (CanvasPatchChange& patch)
1778 {
1779         if (patch.patch()->program() > 0) {
1780                 MIDI::Name::PatchPrimaryKey key;
1781                 get_patch_key_at (patch.patch()->time(), patch.patch()->channel(), key);
1782                 key.program_number--;
1783                 change_patch_change (patch, key);
1784         }
1785 }
1786
1787 void
1788 MidiRegionView::maybe_remove_deleted_note_from_selection (CanvasNoteEvent* cne)
1789 {
1790         if (_selection.empty()) {
1791                 return;
1792         }
1793
1794         if (_selection.erase (cne) > 0) {
1795                 cerr << "Erased a CNE from selection\n";
1796         }
1797 }
1798
1799 void
1800 MidiRegionView::delete_selection()
1801 {
1802         if (_selection.empty()) {
1803                 return;
1804         }
1805
1806         start_note_diff_command (_("delete selection"));
1807
1808         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1809                 if ((*i)->selected()) {
1810                         _note_diff_command->remove((*i)->note());
1811                 }
1812         }
1813
1814         _selection.clear();
1815
1816         apply_diff ();
1817 }
1818
1819 void
1820 MidiRegionView::delete_note (boost::shared_ptr<NoteType> n)
1821 {
1822         start_note_diff_command (_("delete note"));
1823         _note_diff_command->remove (n);
1824         apply_diff ();
1825
1826         trackview.editor().hide_verbose_canvas_cursor ();
1827 }
1828
1829 void
1830 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1831 {
1832         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1833                 if ((*i)->selected() && (*i) != ev) {
1834                         (*i)->set_selected(false);
1835                         (*i)->hide_velocity();
1836                 }
1837         }
1838
1839         _selection.clear();
1840 }
1841
1842 void
1843 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1844 {
1845         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
1846                 if ((*i) != ev) {
1847
1848                         Selection::iterator tmp = i;
1849                         ++tmp;
1850
1851                         (*i)->set_selected (false);
1852                         _selection.erase (i);
1853
1854                         i = tmp;
1855
1856                 } else {
1857                         ++i;
1858                 }
1859         }
1860
1861         /* don't bother with removing this regionview from the editor selection,
1862            since we're about to add another note, and thus put/keep this
1863            regionview in the editor selection.
1864         */
1865
1866         if (!ev->selected()) {
1867                 add_to_selection (ev);
1868         }
1869 }
1870
1871 void
1872 MidiRegionView::select_all_notes ()
1873 {
1874         clear_selection ();
1875
1876         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1877                 add_to_selection (*i);
1878         }
1879 }
1880
1881 void
1882 MidiRegionView::select_matching_notes (uint8_t notenum, uint16_t channel_mask, bool add, bool extend)
1883 {
1884         uint8_t low_note = 127;
1885         uint8_t high_note = 0;
1886         MidiModel::Notes& notes (_model->notes());
1887         _optimization_iterator = _events.begin();
1888
1889         if (!add) {
1890                 clear_selection ();
1891         }
1892
1893         if (extend && _selection.empty()) {
1894                 extend = false;
1895         }
1896
1897         if (extend) {
1898
1899                 /* scan existing selection to get note range */
1900
1901                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1902                         if ((*i)->note()->note() < low_note) {
1903                                 low_note = (*i)->note()->note();
1904                         }
1905                         if ((*i)->note()->note() > high_note) {
1906                                 high_note = (*i)->note()->note();
1907                         }
1908                 }
1909
1910                 low_note = min (low_note, notenum);
1911                 high_note = max (high_note, notenum);
1912         }
1913
1914         no_sound_notes = true;
1915
1916         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1917
1918                 boost::shared_ptr<NoteType> note (*n);
1919                 CanvasNoteEvent* cne;
1920                 bool select = false;
1921
1922                 if (((1 << note->channel()) & channel_mask) != 0) {
1923                         if (extend) {
1924                                 if ((note->note() >= low_note && note->note() <= high_note)) {
1925                                         select = true;
1926                                 }
1927                         } else if (note->note() == notenum) {
1928                                 select = true;
1929                         }
1930                 }
1931
1932                 if (select) {
1933                         if ((cne = find_canvas_note (note)) != 0) {
1934                                 // extend is false because we've taken care of it,
1935                                 // since it extends by time range, not pitch.
1936                                 note_selected (cne, add, false);
1937                         }
1938                 }
1939
1940                 add = true; // we need to add all remaining matching notes, even if the passed in value was false (for "set")
1941
1942         }
1943
1944         no_sound_notes = false;
1945 }
1946
1947 void
1948 MidiRegionView::toggle_matching_notes (uint8_t notenum, uint16_t channel_mask)
1949 {
1950         MidiModel::Notes& notes (_model->notes());
1951         _optimization_iterator = _events.begin();
1952
1953         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1954
1955                 boost::shared_ptr<NoteType> note (*n);
1956                 CanvasNoteEvent* cne;
1957
1958                 if (note->note() == notenum && (((0x0001 << note->channel()) & channel_mask) != 0)) {
1959                         if ((cne = find_canvas_note (note)) != 0) {
1960                                 if (cne->selected()) {
1961                                         note_deselected (cne);
1962                                 } else {
1963                                         note_selected (cne, true, false);
1964                                 }
1965                         }
1966                 }
1967         }
1968 }
1969
1970 void
1971 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add, bool extend)
1972 {
1973         if (!add) {
1974                 clear_selection_except(ev);
1975         }
1976
1977         if (!extend) {
1978
1979                 if (!ev->selected()) {
1980                         add_to_selection (ev);
1981                 }
1982
1983         } else {
1984                 /* find end of latest note selected, select all between that and the start of "ev" */
1985
1986                 Evoral::MusicalTime earliest = Evoral::MaxMusicalTime;
1987                 Evoral::MusicalTime latest = 0;
1988
1989                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1990                         if ((*i)->note()->end_time() > latest) {
1991                                 latest = (*i)->note()->end_time();
1992                         }
1993                         if ((*i)->note()->time() < earliest) {
1994                                 earliest = (*i)->note()->time();
1995                         }
1996                 }
1997
1998                 if (ev->note()->end_time() > latest) {
1999                         latest = ev->note()->end_time();
2000                 }
2001
2002                 if (ev->note()->time() < earliest) {
2003                         earliest = ev->note()->time();
2004                 }
2005
2006                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2007
2008                         /* find notes entirely within OR spanning the earliest..latest range */
2009
2010                         if (((*i)->note()->time() >= earliest && (*i)->note()->end_time() <= latest) ||
2011                             ((*i)->note()->time() <= earliest && (*i)->note()->end_time() >= latest)) {
2012                                 add_to_selection (*i);
2013                         }
2014
2015 #if 0
2016                         /* if events were guaranteed to be time sorted, we could do this.
2017                            but as of sept 10th 2009, they no longer are.
2018                         */
2019
2020                         if ((*i)->note()->time() > latest) {
2021                                 break;
2022                         }
2023 #endif
2024                 }
2025         }
2026 }
2027
2028 void
2029 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev)
2030 {
2031         remove_from_selection (ev);
2032 }
2033
2034 void
2035 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
2036 {
2037         if (x1 > x2) {
2038                 swap (x1, x2);
2039         }
2040
2041         if (y1 > y2) {
2042                 swap (y1, y2);
2043         }
2044
2045         // TODO: Make this faster by storing the last updated selection rect, and only
2046         // adjusting things that are in the area that appears/disappeared.
2047         // We probably need a tree to be able to find events in O(log(n)) time.
2048
2049         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2050
2051                 /* check if any corner of the note is inside the rect
2052
2053                    Notes:
2054                      1) this is computing "touched by", not "contained by" the rect.
2055                      2) this does not require that events be sorted in time.
2056                  */
2057
2058                 const double ix1 = (*i)->x1();
2059                 const double ix2 = (*i)->x2();
2060                 const double iy1 = (*i)->y1();
2061                 const double iy2 = (*i)->y2();
2062
2063                 if ((ix1 >= x1 && ix1 <= x2 && iy1 >= y1 && iy1 <= y2) ||
2064                     (ix1 >= x1 && ix1 <= x2 && iy2 >= y1 && iy2 <= y2) ||
2065                     (ix2 >= x1 && ix2 <= x2 && iy1 >= y1 && iy1 <= y2) ||
2066                     (ix2 >= x1 && ix2 <= x2 && iy2 >= y1 && iy2 <= y2)) {
2067
2068                         // Inside rectangle
2069                         if (!(*i)->selected()) {
2070                                 add_to_selection (*i);
2071                         }
2072                 } else if ((*i)->selected()) {
2073                         // Not inside rectangle
2074                         remove_from_selection (*i);
2075                 }
2076         }
2077 }
2078
2079 void
2080 MidiRegionView::remove_from_selection (CanvasNoteEvent* ev)
2081 {
2082         Selection::iterator i = _selection.find (ev);
2083
2084         if (i != _selection.end()) {
2085                 _selection.erase (i);
2086         }
2087
2088         ev->set_selected (false);
2089         ev->hide_velocity ();
2090
2091         if (_selection.empty()) {
2092                 PublicEditor& editor (trackview.editor());
2093                 editor.get_selection().remove (this);
2094         }
2095 }
2096
2097 void
2098 MidiRegionView::add_to_selection (CanvasNoteEvent* ev)
2099 {
2100         bool add_mrv_selection = false;
2101
2102         if (_selection.empty()) {
2103                 add_mrv_selection = true;
2104         }
2105
2106         if (_selection.insert (ev).second) {
2107                 ev->set_selected (true);
2108                 play_midi_note ((ev)->note());
2109         }
2110
2111         if (add_mrv_selection) {
2112                 PublicEditor& editor (trackview.editor());
2113                 editor.get_selection().add (this);
2114         }
2115 }
2116
2117 void
2118 MidiRegionView::move_selection(double dx, double dy, double cumulative_dy)
2119 {
2120         typedef vector<boost::shared_ptr<NoteType> > PossibleChord;
2121         PossibleChord to_play;
2122         Evoral::MusicalTime earliest = Evoral::MaxMusicalTime;
2123
2124         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2125                 if ((*i)->note()->time() < earliest) {
2126                         earliest = (*i)->note()->time();
2127                 }
2128         }
2129
2130         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2131                 if (Evoral::musical_time_equal ((*i)->note()->time(), earliest)) {
2132                         to_play.push_back ((*i)->note());
2133                 }
2134                 (*i)->move_event(dx, dy);
2135         }
2136
2137         if (dy && !_selection.empty() && !no_sound_notes && trackview.editor().sound_notes()) {
2138
2139                 if (to_play.size() > 1) {
2140
2141                         PossibleChord shifted;
2142
2143                         for (PossibleChord::iterator n = to_play.begin(); n != to_play.end(); ++n) {
2144                                 boost::shared_ptr<NoteType> moved_note (new NoteType (**n));
2145                                 moved_note->set_note (moved_note->note() + cumulative_dy);
2146                                 shifted.push_back (moved_note);
2147                         }
2148
2149                         play_midi_chord (shifted);
2150
2151                 } else if (!to_play.empty()) {
2152
2153                         boost::shared_ptr<NoteType> moved_note (new NoteType (*to_play.front()));
2154                         moved_note->set_note (moved_note->note() + cumulative_dy);
2155                         play_midi_note (moved_note);
2156                 }
2157         }
2158 }
2159
2160 void
2161 MidiRegionView::note_dropped(CanvasNoteEvent *, frameoffset_t dt, int8_t dnote)
2162 {
2163         assert (!_selection.empty());
2164
2165         uint8_t lowest_note_in_selection  = 127;
2166         uint8_t highest_note_in_selection = 0;
2167         uint8_t highest_note_difference = 0;
2168
2169         // find highest and lowest notes first
2170
2171         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2172                 uint8_t pitch = (*i)->note()->note();
2173                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
2174                 highest_note_in_selection = std::max(highest_note_in_selection, pitch);
2175         }
2176
2177         /*
2178         cerr << "dnote: " << (int) dnote << endl;
2179         cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
2180              << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
2181         cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
2182              << int(highest_note_in_selection) << endl;
2183         cerr << "selection size: " << _selection.size() << endl;
2184         cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
2185         */
2186
2187         // Make sure the note pitch does not exceed the MIDI standard range
2188         if (highest_note_in_selection + dnote > 127) {
2189                 highest_note_difference = highest_note_in_selection - 127;
2190         }
2191
2192         start_note_diff_command (_("move notes"));
2193
2194         for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ++i) {
2195
2196                 Evoral::MusicalTime new_time = frames_to_beats (beats_to_frames ((*i)->note()->time()) + dt);
2197
2198                 if (new_time < 0) {
2199                         continue;
2200                 }
2201
2202                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::StartTime, new_time);
2203
2204                 uint8_t original_pitch = (*i)->note()->note();
2205                 uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
2206
2207                 // keep notes in standard midi range
2208                 clamp_to_0_127(new_pitch);
2209
2210                 // keep original pitch if note is dragged outside valid midi range
2211                 if ((original_pitch != 0 && new_pitch == 0)
2212                                 || (original_pitch != 127 && new_pitch == 127)) {
2213                         new_pitch = original_pitch;
2214                 }
2215
2216                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
2217                 highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
2218
2219                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::NoteNumber, new_pitch);
2220         }
2221
2222         apply_diff();
2223
2224         // care about notes being moved beyond the upper/lower bounds on the canvas
2225         if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
2226             highest_note_in_selection > midi_stream_view()->highest_note()) {
2227                 midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
2228         }
2229 }
2230
2231 framepos_t
2232 MidiRegionView::snap_pixel_to_frame(double x)
2233 {
2234         PublicEditor& editor = trackview.editor();
2235         // x is region relative, convert it to global absolute frames
2236         framepos_t frame = editor.pixel_to_frame(x) + _region->position();
2237         editor.snap_to(frame);
2238         return frame - _region->position(); // convert back to region relative
2239 }
2240
2241 /** Snap a frame offset within our region using the current snap settings.
2242  *  @param x Frame offset from this region's position.
2243  *  @return Snapped frame offset from this region's position.
2244  */
2245 frameoffset_t
2246 MidiRegionView::snap_frame_to_frame (frameoffset_t x)
2247 {
2248         PublicEditor& editor = trackview.editor();
2249
2250         /* x is region relative, convert it to global absolute frames */
2251         framepos_t const session_frame = x + _region->position();
2252
2253         /* try a snap in either direction */
2254         framepos_t frame = session_frame;
2255         editor.snap_to (frame, 0);
2256
2257         /* if we went off the beginning of the region, snap forwards */
2258         if (frame < _region->position ()) {
2259                 frame = session_frame;
2260                 editor.snap_to (frame, 1);
2261         }
2262
2263         /* back to region relative */
2264         return frame - _region->position();
2265 }
2266
2267 double
2268 MidiRegionView::snap_to_pixel(double x)
2269 {
2270         return (double) trackview.editor().frame_to_pixel(snap_pixel_to_frame(x));
2271 }
2272
2273 double
2274 MidiRegionView::get_position_pixels()
2275 {
2276         framepos_t region_frame = get_position();
2277         return trackview.editor().frame_to_pixel(region_frame);
2278 }
2279
2280 double
2281 MidiRegionView::get_end_position_pixels()
2282 {
2283         framepos_t frame = get_position() + get_duration ();
2284         return trackview.editor().frame_to_pixel(frame);
2285 }
2286
2287 framepos_t
2288 MidiRegionView::beats_to_frames(double beats) const
2289 {
2290         return _time_converter.to(beats);
2291 }
2292
2293 double
2294 MidiRegionView::frames_to_beats(framepos_t frames) const
2295 {
2296         return _time_converter.from(frames);
2297 }
2298
2299 void
2300 MidiRegionView::begin_resizing (bool /*at_front*/)
2301 {
2302         _resize_data.clear();
2303
2304         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2305                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
2306
2307                 // only insert CanvasNotes into the map
2308                 if (note) {
2309                         NoteResizeData *resize_data = new NoteResizeData();
2310                         resize_data->canvas_note = note;
2311
2312                         // create a new SimpleRect from the note which will be the resize preview
2313                         SimpleRect *resize_rect = new SimpleRect(
2314                                         *_note_group, note->x1(), note->y1(), note->x2(), note->y2());
2315
2316                         // calculate the colors: get the color settings
2317                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
2318                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
2319                                         128);
2320
2321                         // make the resize preview notes more transparent and bright
2322                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
2323
2324                         // calculate color based on note velocity
2325                         resize_rect->property_fill_color_rgba() = UINT_INTERPOLATE(
2326                                 CanvasNoteEvent::meter_style_fill_color(note->note()->velocity(), note->selected()),
2327                                         fill_color,
2328                                         0.85);
2329
2330                         resize_rect->property_outline_color_rgba() = CanvasNoteEvent::calculate_outline(
2331                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
2332
2333                         resize_data->resize_rect = resize_rect;
2334                         _resize_data.push_back(resize_data);
2335                 }
2336         }
2337 }
2338
2339 /** Update resizing notes while user drags.
2340  * @param primary `primary' note for the drag; ie the one that is used as the reference in non-relative mode.
2341  * @param at_front which end of the note (true == note on, false == note off)
2342  * @param delta_x change in mouse position since the start of the drag
2343  * @param relative true if relative resizing is taking place, false if absolute resizing.  This only makes
2344  * a difference when multiple notes are being resized; in relative mode, each note's length is changed by the
2345  * amount of the drag.  In non-relative mode, all selected notes are set to have the same start or end point
2346  * as the \a primary note.
2347  */
2348 void
2349 MidiRegionView::update_resizing (ArdourCanvas::CanvasNoteEvent* primary, bool at_front, double delta_x, bool relative)
2350 {
2351         bool cursor_set = false;
2352
2353         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2354                 SimpleRect* resize_rect = (*i)->resize_rect;
2355                 CanvasNote* canvas_note = (*i)->canvas_note;
2356                 double current_x;
2357
2358                 if (at_front) {
2359                         if (relative) {
2360                                 current_x = canvas_note->x1() + delta_x;
2361                         } else {
2362                                 current_x = primary->x1() + delta_x;
2363                         }
2364                 } else {
2365                         if (relative) {
2366                                 current_x = canvas_note->x2() + delta_x;
2367                         } else {
2368                                 current_x = primary->x2() + delta_x;
2369                         }
2370                 }
2371
2372                 if (at_front) {
2373                         resize_rect->property_x1() = snap_to_pixel(current_x);
2374                         resize_rect->property_x2() = canvas_note->x2();
2375                 } else {
2376                         resize_rect->property_x2() = snap_to_pixel(current_x);
2377                         resize_rect->property_x1() = canvas_note->x1();
2378                 }
2379
2380                 if (!cursor_set) {
2381                         double beats;
2382
2383                         beats = snap_pixel_to_frame (current_x);
2384                         beats = frames_to_beats (beats);
2385
2386                         double len;
2387
2388                         if (at_front) {
2389                                 if (beats < canvas_note->note()->end_time()) {
2390                                         len = canvas_note->note()->time() - beats;
2391                                         len += canvas_note->note()->length();
2392                                 } else {
2393                                         len = 0;
2394                                 }
2395                         } else {
2396                                 if (beats >= canvas_note->note()->time()) {
2397                                         len = beats - canvas_note->note()->time();
2398                                 } else {
2399                                         len = 0;
2400                                 }
2401                         }
2402
2403                         char buf[16];
2404                         snprintf (buf, sizeof (buf), "%.3g beats", len);
2405                         trackview.editor().show_verbose_canvas_cursor_with (buf);
2406
2407                         cursor_set = true;
2408                 }
2409
2410         }
2411 }
2412
2413
2414 /** Finish resizing notes when the user releases the mouse button.
2415  *  Parameters the same as for \a update_resizing().
2416  */
2417 void
2418 MidiRegionView::commit_resizing (ArdourCanvas::CanvasNoteEvent* primary, bool at_front, double delta_x, bool relative)
2419 {
2420         start_note_diff_command (_("resize notes"));
2421
2422         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2423                 CanvasNote*  canvas_note = (*i)->canvas_note;
2424                 SimpleRect*  resize_rect = (*i)->resize_rect;
2425                 double current_x;
2426
2427                 if (at_front) {
2428                         if (relative) {
2429                                 current_x = canvas_note->x1() + delta_x;
2430                         } else {
2431                                 current_x = primary->x1() + delta_x;
2432                         }
2433                 } else {
2434                         if (relative) {
2435                                 current_x = canvas_note->x2() + delta_x;
2436                         } else {
2437                                 current_x = primary->x2() + delta_x;
2438                         }
2439                 }
2440
2441                 current_x = snap_pixel_to_frame (current_x);
2442                 current_x = frames_to_beats (current_x);
2443
2444                 if (at_front && current_x < canvas_note->note()->end_time()) {
2445                         note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::StartTime, current_x);
2446
2447                         double len = canvas_note->note()->time() - current_x;
2448                         len += canvas_note->note()->length();
2449
2450                         if (len > 0) {
2451                                 /* XXX convert to beats */
2452                                 note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::Length, len);
2453                         }
2454                 }
2455
2456                 if (!at_front) {
2457                         double len = current_x - canvas_note->note()->time();
2458
2459                         if (len > 0) {
2460                                 /* XXX convert to beats */
2461                                 note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::Length, len);
2462                         }
2463                 }
2464
2465                 delete resize_rect;
2466                 delete (*i);
2467         }
2468
2469         _resize_data.clear();
2470         apply_diff();
2471 }
2472
2473 void
2474 MidiRegionView::change_note_channel (CanvasNoteEvent* event, int8_t channel)
2475 {
2476         note_diff_add_change (event, MidiModel::NoteDiffCommand::Channel, (uint8_t) channel);
2477 }
2478
2479 void
2480 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
2481 {
2482         uint8_t new_velocity;
2483
2484         if (relative) {
2485                 new_velocity = event->note()->velocity() + velocity;
2486                 clamp_to_0_127(new_velocity);
2487         } else {
2488                 new_velocity = velocity;
2489         }
2490
2491         event->set_selected (event->selected()); // change color
2492
2493         note_diff_add_change (event, MidiModel::NoteDiffCommand::Velocity, new_velocity);
2494 }
2495
2496 void
2497 MidiRegionView::change_note_note (CanvasNoteEvent* event, int8_t note, bool relative)
2498 {
2499         uint8_t new_note;
2500
2501         if (relative) {
2502                 new_note = event->note()->note() + note;
2503         } else {
2504                 new_note = note;
2505         }
2506
2507         clamp_to_0_127 (new_note);
2508         note_diff_add_change (event, MidiModel::NoteDiffCommand::NoteNumber, new_note);
2509 }
2510
2511 void
2512 MidiRegionView::trim_note (CanvasNoteEvent* event, Evoral::MusicalTime front_delta, Evoral::MusicalTime end_delta)
2513 {
2514         bool change_start = false;
2515         bool change_length = false;
2516         Evoral::MusicalTime new_start = 0;
2517         Evoral::MusicalTime new_length = 0;
2518
2519         /* NOTE: the semantics of the two delta arguments are slightly subtle:
2520
2521            front_delta: if positive - move the start of the note later in time (shortening it)
2522                         if negative - move the start of the note earlier in time (lengthening it)
2523
2524            end_delta:   if positive - move the end of the note later in time (lengthening it)
2525                         if negative - move the end of the note earlier in time (shortening it)
2526          */
2527
2528         if (front_delta) {
2529                 if (front_delta < 0) {
2530
2531                         if (event->note()->time() < -front_delta) {
2532                                 new_start = 0;
2533                         } else {
2534                                 new_start = event->note()->time() + front_delta; // moves earlier
2535                         }
2536
2537                         /* start moved toward zero, so move the end point out to where it used to be.
2538                            Note that front_delta is negative, so this increases the length.
2539                         */
2540
2541                         new_length = event->note()->length() - front_delta;
2542                         change_start = true;
2543                         change_length = true;
2544
2545                 } else {
2546
2547                         Evoral::MusicalTime new_pos = event->note()->time() + front_delta;
2548
2549                         if (new_pos < event->note()->end_time()) {
2550                                 new_start = event->note()->time() + front_delta;
2551                                 /* start moved toward the end, so move the end point back to where it used to be */
2552                                 new_length = event->note()->length() - front_delta;
2553                                 change_start = true;
2554                                 change_length = true;
2555                         }
2556                 }
2557
2558         }
2559
2560         if (end_delta) {
2561                 bool can_change = true;
2562                 if (end_delta < 0) {
2563                         if (event->note()->length() < -end_delta) {
2564                                 can_change = false;
2565                         }
2566                 }
2567
2568                 if (can_change) {
2569                         new_length = event->note()->length() + end_delta;
2570                         change_length = true;
2571                 }
2572         }
2573
2574         if (change_start) {
2575                 note_diff_add_change (event, MidiModel::NoteDiffCommand::StartTime, new_start);
2576         }
2577
2578         if (change_length) {
2579                 note_diff_add_change (event, MidiModel::NoteDiffCommand::Length, new_length);
2580         }
2581 }
2582
2583 void
2584 MidiRegionView::change_note_time (CanvasNoteEvent* event, Evoral::MusicalTime delta, bool relative)
2585 {
2586         Evoral::MusicalTime new_time;
2587
2588         if (relative) {
2589                 if (delta < 0.0) {
2590                         if (event->note()->time() < -delta) {
2591                                 new_time = 0;
2592                         } else {
2593                                 new_time = event->note()->time() + delta;
2594                         }
2595                 } else {
2596                         new_time = event->note()->time() + delta;
2597                 }
2598         } else {
2599                 new_time = delta;
2600         }
2601
2602         note_diff_add_change (event, MidiModel::NoteDiffCommand::StartTime, new_time);
2603 }
2604
2605 void
2606 MidiRegionView::change_note_length (CanvasNoteEvent* event, Evoral::MusicalTime t)
2607 {
2608         note_diff_add_change (event, MidiModel::NoteDiffCommand::Length, t);
2609 }
2610
2611 void
2612 MidiRegionView::change_velocities (bool up, bool fine, bool allow_smush)
2613 {
2614         int8_t delta;
2615
2616         if (_selection.empty()) {
2617                 return;
2618         }
2619
2620         if (fine) {
2621                 delta = 1;
2622         } else {
2623                 delta = 10;
2624         }
2625
2626         if (!up) {
2627                 delta = -delta;
2628         }
2629
2630         if (!allow_smush) {
2631                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2632                         if ((*i)->note()->velocity() + delta == 0 || (*i)->note()->velocity() + delta == 127) {
2633                                 return;
2634                         }
2635                 }
2636         }
2637
2638         start_note_diff_command (_("change velocities"));
2639
2640         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
2641                 Selection::iterator next = i;
2642                 ++next;
2643                 change_note_velocity (*i, delta, true);
2644                 i = next;
2645         }
2646
2647         apply_diff();
2648
2649         if (!_selection.empty()) {
2650                 char buf[24];
2651                 snprintf (buf, sizeof (buf), "Vel %d",
2652                           (int) (*_selection.begin())->note()->velocity());
2653                 trackview.editor().show_verbose_canvas_cursor_with (buf, 10, 10);
2654         }
2655 }
2656
2657
2658 void
2659 MidiRegionView::transpose (bool up, bool fine, bool allow_smush)
2660 {
2661         if (_selection.empty()) {
2662                 return;
2663         }
2664
2665         int8_t delta;
2666
2667         if (fine) {
2668                 delta = 1;
2669         } else {
2670                 delta = 12;
2671         }
2672
2673         if (!up) {
2674                 delta = -delta;
2675         }
2676
2677         if (!allow_smush) {
2678                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2679                         if (!up) {
2680                                 if ((int8_t) (*i)->note()->note() + delta <= 0) {
2681                                         return;
2682                                 }
2683                         } else {
2684                                 if ((int8_t) (*i)->note()->note() + delta > 127) {
2685                                         return;
2686                                 }
2687                         }
2688                 }
2689         }
2690
2691         start_note_diff_command (_("transpose"));
2692
2693         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2694                 Selection::iterator next = i;
2695                 ++next;
2696                 change_note_note (*i, delta, true);
2697                 i = next;
2698         }
2699
2700         apply_diff ();
2701 }
2702
2703 void
2704 MidiRegionView::change_note_lengths (bool fine, bool shorter, Evoral::MusicalTime delta, bool start, bool end)
2705 {
2706         if (delta == 0.0) {
2707                 if (fine) {
2708                         delta = 1.0/128.0;
2709                 } else {
2710                         /* grab the current grid distance */
2711                         bool success;
2712                         delta = trackview.editor().get_grid_type_as_beats (success, _region->position());
2713                         if (!success) {
2714                                 /* XXX cannot get grid type as beats ... should always be possible ... FIX ME */
2715                                 cerr << "Grid type not available as beats - TO BE FIXED\n";
2716                                 return;
2717                         }
2718                 }
2719         }
2720
2721         if (shorter) {
2722                 delta = -delta;
2723         }
2724
2725         start_note_diff_command (_("change note lengths"));
2726
2727         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2728                 Selection::iterator next = i;
2729                 ++next;
2730
2731                 /* note the negation of the delta for start */
2732
2733                 trim_note (*i, (start ? -delta : 0), (end ? delta : 0));
2734                 i = next;
2735         }
2736
2737         apply_diff ();
2738
2739 }
2740
2741 void
2742 MidiRegionView::nudge_notes (bool forward)
2743 {
2744         if (_selection.empty()) {
2745                 return;
2746         }
2747
2748         /* pick a note as the point along the timeline to get the nudge distance.
2749            its not necessarily the earliest note, so we may want to pull the notes out
2750            into a vector and sort before using the first one.
2751         */
2752
2753         framepos_t ref_point = _region->position() + beats_to_frames ((*(_selection.begin()))->note()->time());
2754         framepos_t unused;
2755         framepos_t distance;
2756
2757         if (trackview.editor().snap_mode() == Editing::SnapOff) {
2758
2759                 /* grid is off - use nudge distance */
2760
2761                 distance = trackview.editor().get_nudge_distance (ref_point, unused);
2762
2763         } else {
2764
2765                 /* use grid */
2766
2767                 framepos_t next_pos = ref_point;
2768
2769                 if (forward) {
2770                         if (max_framepos - 1 < next_pos) {
2771                                 next_pos += 1;
2772                         }
2773                 } else {
2774                         if (next_pos == 0) {
2775                                 return;
2776                         }
2777                         next_pos -= 1;
2778                 }
2779
2780                 trackview.editor().snap_to (next_pos, (forward ? 1 : -1), false);
2781                 distance = ref_point - next_pos;
2782         }
2783
2784         if (distance == 0) {
2785                 return;
2786         }
2787
2788         Evoral::MusicalTime delta = frames_to_beats (fabs (distance));
2789
2790         if (!forward) {
2791                 delta = -delta;
2792         }
2793
2794         start_note_diff_command (_("nudge"));
2795
2796         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2797                 Selection::iterator next = i;
2798                 ++next;
2799                 change_note_time (*i, delta, true);
2800                 i = next;
2801         }
2802
2803         apply_diff ();
2804 }
2805
2806 void
2807 MidiRegionView::change_channel(uint8_t channel)
2808 {
2809         start_note_diff_command(_("change channel"));
2810         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2811                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::Channel, channel);
2812         }
2813
2814         apply_diff();
2815 }
2816
2817
2818 void
2819 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
2820 {
2821         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
2822
2823         pre_enter_cursor = editor->get_canvas_cursor ();
2824
2825         if (_mouse_state == SelectTouchDragging) {
2826                 note_selected (ev, true);
2827         }
2828
2829         show_verbose_canvas_cursor (ev->note ());
2830 }
2831
2832 void
2833 MidiRegionView::note_left (ArdourCanvas::CanvasNoteEvent*)
2834 {
2835         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
2836
2837         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2838                 (*i)->hide_velocity ();
2839         }
2840
2841         editor->hide_verbose_canvas_cursor ();
2842
2843         if (pre_enter_cursor) {
2844                 editor->set_canvas_cursor (pre_enter_cursor);
2845                 pre_enter_cursor = 0;
2846         }
2847 }
2848
2849 void
2850 MidiRegionView::patch_entered (ArdourCanvas::CanvasPatchChange* ev)
2851 {
2852         ostringstream s;
2853         s << ((int) ev->patch()->program() + 1) << ":" << (ev->patch()->bank() + 1);
2854         trackview.editor().show_verbose_canvas_cursor_with (s.str().c_str(), 10, 20);
2855 }
2856
2857 void
2858 MidiRegionView::patch_left (ArdourCanvas::CanvasPatchChange *)
2859 {
2860         trackview.editor().hide_verbose_canvas_cursor ();
2861 }
2862
2863 void
2864 MidiRegionView::note_mouse_position (float x_fraction, float /*y_fraction*/, bool can_set_cursor)
2865 {
2866         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
2867
2868         if (x_fraction > 0.0 && x_fraction < 0.25) {
2869                 editor->set_canvas_cursor (editor->cursors()->left_side_trim);
2870         } else if (x_fraction >= 0.75 && x_fraction < 1.0) {
2871                 editor->set_canvas_cursor (editor->cursors()->right_side_trim);
2872         } else {
2873                 if (pre_enter_cursor && can_set_cursor) {
2874                         editor->set_canvas_cursor (pre_enter_cursor);
2875                 }
2876         }
2877 }
2878
2879 void
2880 MidiRegionView::set_frame_color()
2881 {
2882         uint32_t f;
2883
2884         TimeAxisViewItem::set_frame_color ();
2885
2886         if (!frame) {
2887                 return;
2888         }
2889
2890         if (_selected) {
2891                 f = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
2892         } else if (high_enough_for_name) {
2893                 f= ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
2894         } else {
2895                 f = fill_color;
2896         }
2897
2898         if (!rect_visible) {
2899                 f = UINT_RGBA_CHANGE_A (f, 0);
2900         }
2901
2902         frame->property_fill_color_rgba() = f;
2903 }
2904
2905 void
2906 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
2907 {
2908         switch (mode) {
2909         case AllChannels:
2910         case FilterChannels:
2911                 _force_channel = -1;
2912                 break;
2913         case ForceChannel:
2914                 _force_channel = mask;
2915                 mask = 0xFFFF; // Show all notes as active (below)
2916         };
2917
2918         // Update notes for selection
2919         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2920                 (*i)->on_channel_selection_change(mask);
2921         }
2922
2923         _last_channel_selection = mask;
2924
2925         _patch_changes.clear ();
2926         display_patch_changes ();
2927 }
2928
2929 void
2930 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
2931 {
2932         _model_name         = model;
2933         _custom_device_mode = custom_device_mode;
2934         redisplay_model();
2935 }
2936
2937 void
2938 MidiRegionView::cut_copy_clear (Editing::CutCopyOp op)
2939 {
2940         if (_selection.empty()) {
2941                 return;
2942         }
2943
2944         PublicEditor& editor (trackview.editor());
2945
2946         switch (op) {
2947         case Cut:
2948         case Copy:
2949                 editor.get_cut_buffer().add (selection_as_cut_buffer());
2950                 break;
2951         default:
2952                 break;
2953         }
2954
2955         if (op != Copy) {
2956
2957                 start_note_diff_command();
2958
2959                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2960                         switch (op) {
2961                         case Copy:
2962                                 break;
2963                         case Cut:
2964                         case Clear:
2965                                 note_diff_remove_note (*i);
2966                                 break;
2967                         }
2968                 }
2969
2970                 apply_diff();
2971         }
2972 }
2973
2974 MidiCutBuffer*
2975 MidiRegionView::selection_as_cut_buffer () const
2976 {
2977         Notes notes;
2978
2979         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2980                 NoteType* n = (*i)->note().get();
2981                 notes.insert (boost::shared_ptr<NoteType> (new NoteType (*n)));
2982         }
2983
2984         MidiCutBuffer* cb = new MidiCutBuffer (trackview.session());
2985         cb->set (notes);
2986
2987         return cb;
2988 }
2989
2990 /** This method handles undo */
2991 void
2992 MidiRegionView::paste (framepos_t pos, float times, const MidiCutBuffer& mcb)
2993 {
2994         if (mcb.empty()) {
2995                 return;
2996         }
2997
2998         DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("MIDI paste @ %1 times %2\n", pos, times));
2999
3000         trackview.session()->begin_reversible_command (_("paste"));
3001
3002         start_note_diff_command (_("paste"));
3003
3004         Evoral::MusicalTime beat_delta;
3005         Evoral::MusicalTime paste_pos_beats;
3006         Evoral::MusicalTime duration;
3007         Evoral::MusicalTime end_point = 0;
3008
3009         duration = (*mcb.notes().rbegin())->end_time() - (*mcb.notes().begin())->time();
3010         paste_pos_beats = frames_to_beats (pos - _region->position());
3011         beat_delta = (*mcb.notes().begin())->time() - paste_pos_beats;
3012         paste_pos_beats = 0;
3013
3014         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",
3015                                                        (*mcb.notes().begin())->time(),
3016                                                        (*mcb.notes().rbegin())->end_time(),
3017                                                        duration, pos, _region->position(),
3018                                                        paste_pos_beats, beat_delta));
3019
3020         clear_selection ();
3021
3022         for (int n = 0; n < (int) times; ++n) {
3023
3024                 for (Notes::const_iterator i = mcb.notes().begin(); i != mcb.notes().end(); ++i) {
3025
3026                         boost::shared_ptr<NoteType> copied_note (new NoteType (*((*i).get())));
3027                         copied_note->set_time (paste_pos_beats + copied_note->time() - beat_delta);
3028
3029                         /* make all newly added notes selected */
3030
3031                         note_diff_add_note (copied_note, true);
3032                         end_point = copied_note->end_time();
3033                 }
3034
3035                 paste_pos_beats += duration;
3036         }
3037
3038         /* if we pasted past the current end of the region, extend the region */
3039
3040         framepos_t end_frame = _region->position() + beats_to_frames (end_point);
3041         framepos_t region_end = _region->position() + _region->length() - 1;
3042
3043         if (end_frame > region_end) {
3044
3045                 DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("Paste extended region from %1 to %2\n", region_end, end_frame));
3046
3047                 _region->clear_changes ();
3048                 _region->set_length (end_frame, this);
3049                 trackview.session()->add_command (new StatefulDiffCommand (_region));
3050         }
3051
3052         apply_diff (true);
3053
3054         trackview.session()->commit_reversible_command ();
3055 }
3056
3057 struct EventNoteTimeEarlyFirstComparator {
3058     bool operator() (CanvasNoteEvent* a, CanvasNoteEvent* b) {
3059             return a->note()->time() < b->note()->time();
3060     }
3061 };
3062
3063 void
3064 MidiRegionView::time_sort_events ()
3065 {
3066         if (!_sort_needed) {
3067                 return;
3068         }
3069
3070         EventNoteTimeEarlyFirstComparator cmp;
3071         _events.sort (cmp);
3072
3073         _sort_needed = false;
3074 }
3075
3076 void
3077 MidiRegionView::goto_next_note ()
3078 {
3079         // framepos_t pos = -1;
3080         bool use_next = false;
3081
3082         if (_events.back()->selected()) {
3083                 return;
3084         }
3085
3086         time_sort_events ();
3087
3088         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3089                 if ((*i)->selected()) {
3090                         use_next = true;
3091                         continue;
3092                 } else if (use_next) {
3093                         unique_select (*i);
3094                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
3095                         return;
3096                 }
3097         }
3098
3099         /* use the first one */
3100
3101         unique_select (_events.front());
3102
3103 }
3104
3105 void
3106 MidiRegionView::goto_previous_note ()
3107 {
3108         // framepos_t pos = -1;
3109         bool use_next = false;
3110
3111         if (_events.front()->selected()) {
3112                 return;
3113         }
3114
3115         time_sort_events ();
3116
3117         for (Events::reverse_iterator i = _events.rbegin(); i != _events.rend(); ++i) {
3118                 if ((*i)->selected()) {
3119                         use_next = true;
3120                         continue;
3121                 } else if (use_next) {
3122                         unique_select (*i);
3123                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
3124                         return;
3125                 }
3126         }
3127
3128         /* use the last one */
3129
3130         unique_select (*(_events.rbegin()));
3131 }
3132
3133 void
3134 MidiRegionView::selection_as_notelist (Notes& selected, bool allow_all_if_none_selected)
3135 {
3136         bool had_selected = false;
3137
3138         time_sort_events ();
3139
3140         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3141                 if ((*i)->selected()) {
3142                         selected.insert ((*i)->note());
3143                         had_selected = true;
3144                 }
3145         }
3146
3147         if (allow_all_if_none_selected && !had_selected) {
3148                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3149                         selected.insert ((*i)->note());
3150                 }
3151         }
3152 }
3153
3154 void
3155 MidiRegionView::update_ghost_note (double x, double y)
3156 {
3157         _last_ghost_x = x;
3158         _last_ghost_y = y;
3159
3160         _note_group->w2i (x, y);
3161         framepos_t f = trackview.editor().pixel_to_frame (x) + _region->position ();
3162         trackview.editor().snap_to (f);
3163         f -= _region->position ();
3164
3165         bool success;
3166         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, f);
3167
3168         if (!success) {
3169                 beats = 1;
3170         }
3171
3172         double length = frames_to_beats (snap_frame_to_frame (f + beats_to_frames (beats)) - f);
3173
3174         _ghost_note->note()->set_time (frames_to_beats (f + _region->start()));
3175         _ghost_note->note()->set_length (length);
3176         _ghost_note->note()->set_note (midi_stream_view()->y_to_note (y));
3177
3178         /* the ghost note does not appear in ghost regions, so pass false in here */
3179         update_note (_ghost_note, false);
3180
3181         show_verbose_canvas_cursor (_ghost_note->note ());
3182 }
3183
3184 void
3185 MidiRegionView::create_ghost_note (double x, double y)
3186 {
3187         delete _ghost_note;
3188         _ghost_note = 0;
3189
3190         boost::shared_ptr<NoteType> g (new NoteType);
3191         _ghost_note = new NoEventCanvasNote (*this, *_note_group, g);
3192         _ghost_note->property_outline_color_rgba() = 0x000000aa;
3193         update_ghost_note (x, y);
3194         _ghost_note->show ();
3195
3196         _last_ghost_x = x;
3197         _last_ghost_y = y;
3198
3199         show_verbose_canvas_cursor (_ghost_note->note ());
3200 }
3201
3202 void
3203 MidiRegionView::snap_changed ()
3204 {
3205         if (!_ghost_note) {
3206                 return;
3207         }
3208
3209         create_ghost_note (_last_ghost_x, _last_ghost_y);
3210 }
3211
3212 void
3213 MidiRegionView::show_verbose_canvas_cursor (boost::shared_ptr<NoteType> n) const
3214 {
3215         char buf[24];
3216         snprintf (buf, sizeof (buf), "%s (%d) Chn %d\nVel %d",
3217                   Evoral::midi_note_name (n->note()).c_str(),
3218                   (int) n->note (),
3219                   (int) n->channel() + 1,
3220                   (int) n->velocity());
3221         trackview.editor().show_verbose_canvas_cursor_with (buf, 10, 20);
3222 }
3223
3224 void
3225 MidiRegionView::drop_down_keys ()
3226 {
3227         _mouse_state = None;
3228 }
3229
3230 void
3231 MidiRegionView::maybe_select_by_position (GdkEventButton* ev, double /*x*/, double y)
3232 {
3233         double note = midi_stream_view()->y_to_note(y);
3234         Events e;
3235         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3236
3237         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
3238
3239         if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
3240                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchGreaterThanOrEqual, (uint8_t) floor (note), chn_mask);
3241         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
3242                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchLessThanOrEqual, (uint8_t) floor (note), chn_mask);
3243         } else {
3244                 return;
3245         }
3246
3247         bool add_mrv_selection = false;
3248
3249         if (_selection.empty()) {
3250                 add_mrv_selection = true;
3251         }
3252
3253         for (Events::iterator i = e.begin(); i != e.end(); ++i) {
3254                 if (_selection.insert (*i).second) {
3255                         (*i)->set_selected (true);
3256                 }
3257         }
3258
3259         if (add_mrv_selection) {
3260                 PublicEditor& editor (trackview.editor());
3261                 editor.get_selection().add (this);
3262         }
3263 }
3264
3265 void
3266 MidiRegionView::color_handler ()
3267 {
3268         RegionView::color_handler ();
3269
3270         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3271                 (*i)->set_selected ((*i)->selected()); // will change color
3272         }
3273
3274         /* XXX probably more to do here */
3275 }
3276
3277 void
3278 MidiRegionView::enable_display (bool yn)
3279 {
3280         RegionView::enable_display (yn);
3281         if (yn) {
3282                 redisplay_model ();
3283         }
3284 }
3285
3286 void
3287 MidiRegionView::show_step_edit_cursor (Evoral::MusicalTime pos)
3288 {
3289         if (_step_edit_cursor == 0) {
3290                 ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
3291
3292                 _step_edit_cursor = new ArdourCanvas::SimpleRect (*group);
3293                 _step_edit_cursor->property_y1() = 0;
3294                 _step_edit_cursor->property_y2() = midi_stream_view()->contents_height();
3295                 _step_edit_cursor->property_fill_color_rgba() = RGBA_TO_UINT (45,0,0,90);
3296                 _step_edit_cursor->property_outline_color_rgba() = RGBA_TO_UINT (85,0,0,90);
3297         }
3298
3299         move_step_edit_cursor (pos);
3300         _step_edit_cursor->show ();
3301 }
3302
3303 void
3304 MidiRegionView::move_step_edit_cursor (Evoral::MusicalTime pos)
3305 {
3306         _step_edit_cursor_position = pos;
3307
3308         if (_step_edit_cursor) {
3309                 double pixel = trackview.editor().frame_to_pixel (beats_to_frames (pos));
3310                 _step_edit_cursor->property_x1() = pixel;
3311                 set_step_edit_cursor_width (_step_edit_cursor_width);
3312         }
3313 }
3314
3315 void
3316 MidiRegionView::hide_step_edit_cursor ()
3317 {
3318         if (_step_edit_cursor) {
3319                 _step_edit_cursor->hide ();
3320         }
3321 }
3322
3323 void
3324 MidiRegionView::set_step_edit_cursor_width (Evoral::MusicalTime beats)
3325 {
3326         _step_edit_cursor_width = beats;
3327
3328         if (_step_edit_cursor) {
3329                 _step_edit_cursor->property_x2() = _step_edit_cursor->property_x1() + trackview.editor().frame_to_pixel (beats_to_frames (beats));
3330         }
3331 }
3332
3333 /** Called when a diskstream on our track has received some data.  Update the view, if applicable.
3334  *  @param buf Data that has been recorded.
3335  *  @param w Source that this data will end up in.
3336  */
3337 void
3338 MidiRegionView::data_recorded (boost::shared_ptr<MidiBuffer> buf, boost::weak_ptr<MidiSource> w)
3339 {
3340         if (!_active_notes) {
3341                 /* we aren't actively being recorded to */
3342                 return;
3343         }
3344
3345         boost::shared_ptr<MidiSource> src = w.lock ();
3346         if (!src || src != midi_region()->midi_source()) {
3347                 /* recorded data was not destined for our source */
3348                 return;
3349         }
3350
3351         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&trackview);
3352         BeatsFramesConverter converter (trackview.session()->tempo_map(), mtv->midi_track()->get_capture_start_frame (0));
3353
3354         framepos_t back = max_framepos;
3355
3356         for (MidiBuffer::iterator i = buf->begin(); i != buf->end(); ++i) {
3357                 Evoral::MIDIEvent<MidiBuffer::TimeType> const ev (*i, false);
3358                 assert (ev.buffer ());
3359
3360                 Evoral::MusicalTime const time_beats = converter.from (ev.time () - converter.origin_b ());
3361
3362                 if (ev.type() == MIDI_CMD_NOTE_ON) {
3363
3364                         boost::shared_ptr<NoteType> note (
3365                                 new NoteType (ev.channel(), time_beats, 0, ev.note(), ev.velocity())
3366                                 );
3367
3368                         add_note (note, true);
3369
3370                         /* fix up our note range */
3371                         if (ev.note() < _current_range_min) {
3372                                 midi_stream_view()->apply_note_range (ev.note(), _current_range_max, true);
3373                         } else if (ev.note() > _current_range_max) {
3374                                 midi_stream_view()->apply_note_range (_current_range_min, ev.note(), true);
3375                         }
3376
3377                 } else if (ev.type() == MIDI_CMD_NOTE_OFF) {
3378                         resolve_note (ev.note (), time_beats);
3379                 }
3380
3381                 back = ev.time ();
3382         }
3383
3384         midi_stream_view()->check_record_layers (region(), back);
3385 }
3386
3387 void
3388 MidiRegionView::trim_front_starting ()
3389 {
3390         /* Reparent the note group to the region view's parent, so that it doesn't change
3391            when the region view is trimmed.
3392         */
3393         _temporary_note_group = new ArdourCanvas::Group (*group->property_parent ());
3394         _temporary_note_group->move (group->property_x(), group->property_y());
3395         _note_group->reparent (*_temporary_note_group);
3396 }
3397
3398 void
3399 MidiRegionView::trim_front_ending ()
3400 {
3401         _note_group->reparent (*group);
3402         delete _temporary_note_group;
3403         _temporary_note_group = 0;
3404
3405         if (_region->start() < 0) {
3406                 /* Trim drag made start time -ve; fix this */
3407                 midi_region()->fix_negative_start ();
3408         }
3409 }
3410
3411 /** @return channel (counted from 0) to add an event to, based on the current setting
3412  *  of the channel selector.
3413  */
3414 uint8_t
3415 MidiRegionView::get_channel_for_add () const
3416 {
3417         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3418         uint16_t const chn_mask = mtv->channel_selector().get_selected_channels();
3419         int chn_cnt = 0;
3420         uint8_t channel = 0;
3421
3422         /* pick the highest selected channel, unless all channels are selected,
3423            which is interpreted to mean channel 1 (zero)
3424         */
3425
3426         for (uint16_t i = 0; i < 16; ++i) {
3427                 if (chn_mask & (1<<i)) {
3428                         channel = i;
3429                         chn_cnt++;
3430                 }
3431         }
3432
3433         if (chn_cnt == 16) {
3434                 channel = 0;
3435         }
3436
3437         return channel;
3438 }
3439
3440 void
3441 MidiRegionView::edit_patch_change (ArdourCanvas::CanvasPatchChange* pc)
3442 {
3443         PatchChangeDialog d (&_time_converter, trackview.session(), *pc->patch (), Gtk::Stock::APPLY);
3444         if (d.run () != Gtk::RESPONSE_ACCEPT) {
3445                 return;
3446         }
3447
3448         change_patch_change (pc->patch(), d.patch ());
3449 }