gtk2_ardour/midi_region_view.cc

   1 /*
   2     Copyright (C) 2001-2007 Paul Davis
   3     Author: Dave Robillard
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include <cmath>
  21 #include <cassert>
  22 #include <algorithm>
  23 #include <ostream>
  24
  25 #include <gtkmm.h>
  26
  27 #include <gtkmm2ext/gtk_ui.h>
  28
  29 #include <sigc++/signal.h>
  30
  31 #include "pbd/memento_command.h"
  32 #include "pbd/stateful_diff_command.h"
  33
  34 #include "ardour/playlist.h"
  35 #include "ardour/tempo.h"
  36 #include "ardour/midi_region.h"
  37 #include "ardour/midi_source.h"
  38 #include "ardour/midi_model.h"
  39 #include "ardour/midi_patch_manager.h"
  40 #include "ardour/session.h"
  41
  42 #include "evoral/Parameter.hpp"
  43 #include "evoral/MIDIParameters.hpp"
  44 #include "evoral/Control.hpp"
  45 #include "evoral/midi_util.h"
  46
  47 #include "automation_region_view.h"
  48 #include "automation_time_axis.h"
  49 #include "canvas-hit.h"
  50 #include "canvas-note.h"
  51 #include "canvas_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                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
1015                 return;
1016         }
1017
1018         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1019                 (*i)->invalidate ();
1020         }
1021
1022         MidiModel::ReadLock lock(_model->read_lock());
1023
1024         MidiModel::Notes& notes (_model->notes());
1025         _optimization_iterator = _events.begin();
1026
1027         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1028
1029                 boost::shared_ptr<NoteType> note (*n);
1030                 CanvasNoteEvent* cne;
1031                 bool visible;
1032
1033                 if (note_in_region_range (note, visible)) {
1034
1035                         if ((cne = find_canvas_note (note)) != 0) {
1036
1037                                 cne->validate ();
1038
1039                                 CanvasNote* cn;
1040                                 CanvasHit* ch;
1041
1042                                 if ((cn = dynamic_cast<CanvasNote*>(cne)) != 0) {
1043                                         update_note (cn);
1044                                 } else if ((ch = dynamic_cast<CanvasHit*>(cne)) != 0) {
1045                                         update_hit (ch);
1046                                 }
1047
1048                                 if (visible) {
1049                                         cne->show ();
1050                                 } else {
1051                                         cne->hide ();
1052                                 }
1053
1054                         } else {
1055
1056                                 add_note (note, visible);
1057                         }
1058
1059                 } else {
1060
1061                         if ((cne = find_canvas_note (note)) != 0) {
1062                                 cne->validate ();
1063                                 cne->hide ();
1064                         }
1065                 }
1066         }
1067
1068
1069         /* remove note items that are no longer valid */
1070
1071         for (Events::iterator i = _events.begin(); i != _events.end(); ) {
1072                 if (!(*i)->valid ()) {
1073                         delete *i;
1074                         i = _events.erase (i);
1075                 } else {
1076                         ++i;
1077                 }
1078         }
1079
1080         _patch_changes.clear();
1081         _sys_exes.clear();
1082
1083         display_sysexes();
1084         display_patch_changes ();
1085
1086         _marked_for_selection.clear ();
1087         _marked_for_velocity.clear ();
1088
1089         /* we may have caused _events to contain things out of order (e.g. if a note
1090            moved earlier or later). we don't generally need them in time order, but
1091            make a note that a sort is required for those cases that require it.
1092         */
1093
1094         _sort_needed = true;
1095 }
1096
1097 void
1098 MidiRegionView::display_patch_changes ()
1099 {
1100         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1101         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
1102
1103         for (uint8_t i = 0; i < 16; ++i) {
1104                 if (chn_mask & (1<<i)) {
1105                         display_patch_changes_on_channel (i);
1106                 }
1107         }
1108 }
1109
1110 void
1111 MidiRegionView::display_patch_changes_on_channel (uint8_t channel)
1112 {
1113         for (MidiModel::PatchChanges::const_iterator i = _model->patch_changes().begin(); i != _model->patch_changes().end(); ++i) {
1114
1115                 if ((*i)->channel() != channel) {
1116                         continue;
1117                 }
1118
1119                 MIDI::Name::PatchPrimaryKey patch_key ((*i)->bank_msb (), (*i)->bank_lsb (), (*i)->program ());
1120
1121                 boost::shared_ptr<MIDI::Name::Patch> patch =
1122                         MIDI::Name::MidiPatchManager::instance().find_patch(
1123                                         _model_name, _custom_device_mode, channel, patch_key);
1124
1125                 if (patch != 0) {
1126                         add_canvas_patch_change (*i, patch->name());
1127                 } else {
1128                         char buf[16];
1129                         /* program and bank numbers are zero-based: convert to one-based */
1130                         snprintf (buf, 16, "%d\n%d", (*i)->program() + 1, (*i)->bank() + 1);
1131                         add_canvas_patch_change (*i, buf);
1132                 }
1133         }
1134 }
1135
1136 void
1137 MidiRegionView::display_sysexes()
1138 {
1139         for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
1140                 Evoral::MusicalTime time = (*i)->time();
1141                 assert(time >= 0);
1142
1143                 ostringstream str;
1144                 str << hex;
1145                 for (uint32_t b = 0; b < (*i)->size(); ++b) {
1146                         str << int((*i)->buffer()[b]);
1147                         if (b != (*i)->size() -1) {
1148                                 str << " ";
1149                         }
1150                 }
1151                 string text = str.str();
1152
1153                 const double x = trackview.editor().frame_to_pixel(beats_to_frames(time));
1154
1155                 double height = midi_stream_view()->contents_height();
1156
1157                 boost::shared_ptr<CanvasSysEx> sysex = boost::shared_ptr<CanvasSysEx>(
1158                                 new CanvasSysEx(*this, *_note_group, text, height, x, 1.0));
1159
1160                 // Show unless patch change is beyond the region bounds
1161                 if (time - _region->start() >= _region->length() || time < _region->start()) {
1162                         sysex->hide();
1163                 } else {
1164                         sysex->show();
1165                 }
1166
1167                 _sys_exes.push_back(sysex);
1168         }
1169 }
1170
1171
1172 MidiRegionView::~MidiRegionView ()
1173 {
1174         in_destructor = true;
1175
1176         trackview.editor().hide_verbose_canvas_cursor ();
1177
1178         note_delete_connection.disconnect ();
1179
1180         delete _list_editor;
1181
1182         RegionViewGoingAway (this); /* EMIT_SIGNAL */
1183
1184         if (_active_notes) {
1185                 end_write();
1186         }
1187
1188         _selection.clear();
1189         clear_events();
1190
1191         delete _note_group;
1192         delete _note_diff_command;
1193         delete _step_edit_cursor;
1194         delete _temporary_note_group;
1195 }
1196
1197 void
1198 MidiRegionView::region_resized (const PropertyChange& what_changed)
1199 {
1200         RegionView::region_resized(what_changed);
1201
1202         if (what_changed.contains (ARDOUR::Properties::position)) {
1203                 set_duration(_region->length(), 0);
1204                 if (_enable_display) {
1205                         redisplay_model();
1206                 }
1207         }
1208 }
1209
1210 void
1211 MidiRegionView::reset_width_dependent_items (double pixel_width)
1212 {
1213         RegionView::reset_width_dependent_items(pixel_width);
1214         assert(_pixel_width == pixel_width);
1215
1216         if (_enable_display) {
1217                 redisplay_model();
1218         }
1219
1220         move_step_edit_cursor (_step_edit_cursor_position);
1221         set_step_edit_cursor_width (_step_edit_cursor_width);
1222 }
1223
1224 void
1225 MidiRegionView::set_height (double height)
1226 {
1227         static const double FUDGE = 2.0;
1228         const double old_height = _height;
1229         RegionView::set_height(height);
1230         _height = height - FUDGE;
1231
1232         apply_note_range(midi_stream_view()->lowest_note(),
1233                          midi_stream_view()->highest_note(),
1234                          height != old_height + FUDGE);
1235
1236         if (name_pixbuf) {
1237                 name_pixbuf->raise_to_top();
1238         }
1239
1240         for (PatchChanges::iterator x = _patch_changes.begin(); x != _patch_changes.end(); ++x) {
1241                 (*x)->set_height (midi_stream_view()->contents_height());
1242         }
1243
1244         if (_step_edit_cursor) {
1245                 _step_edit_cursor->property_y2() = midi_stream_view()->contents_height();
1246         }
1247 }
1248
1249
1250 /** Apply the current note range from the stream view
1251  * by repositioning/hiding notes as necessary
1252  */
1253 void
1254 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
1255 {
1256         if (!_enable_display) {
1257                 return;
1258         }
1259
1260         if (!force && _current_range_min == min && _current_range_max == max) {
1261                 return;
1262         }
1263
1264         _current_range_min = min;
1265         _current_range_max = max;
1266
1267         for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
1268                 CanvasNoteEvent* event = *i;
1269                 boost::shared_ptr<NoteType> note (event->note());
1270
1271                 if (note->note() < _current_range_min ||
1272                     note->note() > _current_range_max) {
1273                         event->hide();
1274                 } else {
1275                         event->show();
1276                 }
1277
1278                 if (CanvasNote* cnote = dynamic_cast<CanvasNote*>(event)) {
1279
1280                         const double y1 = midi_stream_view()->note_to_y(note->note());
1281                         const double y2 = y1 + floor(midi_stream_view()->note_height());
1282
1283                         cnote->property_y1() = y1;
1284                         cnote->property_y2() = y2;
1285
1286                 } else if (CanvasHit* chit = dynamic_cast<CanvasHit*>(event)) {
1287
1288                         const double diamond_size = update_hit (chit);
1289
1290                         chit->set_height (diamond_size);
1291                 }
1292         }
1293 }
1294
1295 GhostRegion*
1296 MidiRegionView::add_ghost (TimeAxisView& tv)
1297 {
1298         CanvasNote* note;
1299
1300         double unit_position = _region->position () / samples_per_unit;
1301         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
1302         MidiGhostRegion* ghost;
1303
1304         if (mtv && mtv->midi_view()) {
1305                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group
1306                    to allow having midi notes on top of note lines and waveforms.
1307                  */
1308                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
1309         } else {
1310                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
1311         }
1312
1313         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1314                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
1315                         ghost->add_note(note);
1316                 }
1317         }
1318
1319         ghost->set_height ();
1320         ghost->set_duration (_region->length() / samples_per_unit);
1321         ghosts.push_back (ghost);
1322
1323         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&RegionView::remove_ghost, this, _1), gui_context());
1324
1325         return ghost;
1326 }
1327
1328
1329 /** Begin tracking note state for successive calls to add_event
1330  */
1331 void
1332 MidiRegionView::begin_write()
1333 {
1334         assert(!_active_notes);
1335         _active_notes = new CanvasNote*[128];
1336         for (unsigned i=0; i < 128; ++i) {
1337                 _active_notes[i] = 0;
1338         }
1339 }
1340
1341
1342 /** Destroy note state for add_event
1343  */
1344 void
1345 MidiRegionView::end_write()
1346 {
1347         delete[] _active_notes;
1348         _active_notes = 0;
1349         _marked_for_selection.clear();
1350         _marked_for_velocity.clear();
1351 }
1352
1353
1354 /** Resolve an active MIDI note (while recording).
1355  */
1356 void
1357 MidiRegionView::resolve_note(uint8_t note, double end_time)
1358 {
1359         if (midi_view()->note_mode() != Sustained) {
1360                 return;
1361         }
1362
1363         if (_active_notes && _active_notes[note]) {
1364
1365                 const framepos_t end_time_frames = beats_to_frames(end_time);
1366
1367                 _active_notes[note]->property_x2() = trackview.editor().frame_to_pixel(end_time_frames);
1368                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
1369                 _active_notes[note] = 0;
1370         }
1371 }
1372
1373
1374 /** Extend active notes to rightmost edge of region (if length is changed)
1375  */
1376 void
1377 MidiRegionView::extend_active_notes()
1378 {
1379         if (!_active_notes) {
1380                 return;
1381         }
1382
1383         for (unsigned i=0; i < 128; ++i) {
1384                 if (_active_notes[i]) {
1385                         _active_notes[i]->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1386                 }
1387         }
1388 }
1389
1390
1391 void
1392 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
1393 {
1394         if (no_sound_notes || !trackview.editor().sound_notes()) {
1395                 return;
1396         }
1397
1398         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1399
1400         if (!route_ui || !route_ui->midi_track()) {
1401                 return;
1402         }
1403
1404         NotePlayer* np = new NotePlayer (route_ui->midi_track());
1405         np->add (note);
1406         np->play ();
1407 }
1408
1409 void
1410 MidiRegionView::play_midi_chord (vector<boost::shared_ptr<NoteType> > notes)
1411 {
1412         if (no_sound_notes || !trackview.editor().sound_notes()) {
1413                 return;
1414         }
1415
1416         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1417
1418         if (!route_ui || !route_ui->midi_track()) {
1419                 return;
1420         }
1421
1422         NotePlayer* np = new NotePlayer (route_ui->midi_track());
1423
1424         for (vector<boost::shared_ptr<NoteType> >::iterator n = notes.begin(); n != notes.end(); ++n) {
1425                 np->add (*n);
1426         }
1427
1428         np->play ();
1429 }
1430
1431
1432 bool
1433 MidiRegionView::note_in_region_range(const boost::shared_ptr<NoteType> note, bool& visible) const
1434 {
1435         const framepos_t note_start_frames = beats_to_frames(note->time());
1436
1437         bool outside = (note_start_frames - _region->start() >= _region->length()) ||
1438                 (note_start_frames < _region->start());
1439
1440         visible = (note->note() >= midi_stream_view()->lowest_note()) &&
1441                 (note->note() <= midi_stream_view()->highest_note());
1442
1443         return !outside;
1444 }
1445
1446 /** Update a canvas note's size from its model note.
1447  *  @param ev Canvas note to update.
1448  *  @param update_ghost_regions true to update the note in any ghost regions that we have, otherwise false.
1449  */
1450 void
1451 MidiRegionView::update_note (CanvasNote* ev, bool update_ghost_regions)
1452 {
1453         boost::shared_ptr<NoteType> note = ev->note();
1454
1455         const framepos_t note_start_frames = beats_to_frames(note->time());
1456
1457         /* trim note display to not overlap the end of its region */
1458         const framepos_t note_end_frames = min (beats_to_frames (note->end_time()), _region->start() + _region->length());
1459
1460         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1461         const double y1 = midi_stream_view()->note_to_y(note->note());
1462         const double note_endpixel = trackview.editor().frame_to_pixel(note_end_frames - _region->start());
1463
1464         ev->property_x1() = x;
1465         ev->property_y1() = y1;
1466
1467         if (note->length() > 0) {
1468                 ev->property_x2() = note_endpixel;
1469         } else {
1470                 ev->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1471         }
1472
1473         ev->property_y2() = y1 + floor(midi_stream_view()->note_height());
1474
1475         if (note->length() == 0) {
1476                 if (_active_notes) {
1477                         assert(note->note() < 128);
1478                         // If this note is already active there's a stuck note,
1479                         // finish the old note rectangle
1480                         if (_active_notes[note->note()]) {
1481                                 CanvasNote* const old_rect = _active_notes[note->note()];
1482                                 boost::shared_ptr<NoteType> old_note = old_rect->note();
1483                                 old_rect->property_x2() = x;
1484                                 old_rect->property_outline_what() = (guint32) 0xF;
1485                         }
1486                         _active_notes[note->note()] = ev;
1487                 }
1488                 /* outline all but right edge */
1489                 ev->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
1490         } else {
1491                 /* outline all edges */
1492                 ev->property_outline_what() = (guint32) 0xF;
1493         }
1494
1495         if (update_ghost_regions) {
1496                 for (std::vector<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
1497                         MidiGhostRegion* gr = dynamic_cast<MidiGhostRegion*> (*i);
1498                         if (gr) {
1499                                 gr->update_note (ev);
1500                         }
1501                 }
1502         }
1503 }
1504
1505 double
1506 MidiRegionView::update_hit (CanvasHit* ev)
1507 {
1508         boost::shared_ptr<NoteType> note = ev->note();
1509
1510         const framepos_t note_start_frames = beats_to_frames(note->time());
1511         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1512         const double diamond_size = midi_stream_view()->note_height() / 2.0;
1513         const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
1514
1515         ev->move_to (x, y);
1516
1517         return diamond_size;
1518 }
1519
1520 /** Add a MIDI note to the view (with length).
1521  *
1522  * If in sustained mode, notes with length 0 will be considered active
1523  * notes, and resolve_note should be called when the corresponding note off
1524  * event arrives, to properly display the note.
1525  */
1526 void
1527 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note, bool visible)
1528 {
1529         CanvasNoteEvent* event = 0;
1530
1531         assert(note->time() >= 0);
1532         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
1533
1534         //ArdourCanvas::Group* const group = (ArdourCanvas::Group*) get_canvas_group();
1535
1536         if (midi_view()->note_mode() == Sustained) {
1537
1538                 CanvasNote* ev_rect = new CanvasNote(*this, *_note_group, note);
1539
1540                 update_note (ev_rect);
1541
1542                 event = ev_rect;
1543
1544                 MidiGhostRegion* gr;
1545
1546                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
1547                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
1548                                 gr->add_note(ev_rect);
1549                         }
1550                 }
1551
1552         } else if (midi_view()->note_mode() == Percussive) {
1553
1554                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
1555
1556                 CanvasHit* ev_diamond = new CanvasHit(*this, *_note_group, diamond_size, note);
1557
1558                 update_hit (ev_diamond);
1559
1560                 event = ev_diamond;
1561
1562         } else {
1563                 event = 0;
1564         }
1565
1566         if (event) {
1567                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
1568                         note_selected(event, true);
1569                 }
1570
1571                 if (_marked_for_velocity.find(note) != _marked_for_velocity.end()) {
1572                         event->show_velocity();
1573                 }
1574
1575                 event->on_channel_selection_change(_last_channel_selection);
1576                 _events.push_back(event);
1577
1578                 if (visible) {
1579                         event->show();
1580                 } else {
1581                         event->hide ();
1582                 }
1583         }
1584
1585         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1586         MidiStreamView* const view = mtv->midi_view();
1587
1588         view->update_note_range(note->note());
1589 }
1590
1591 void
1592 MidiRegionView::step_add_note (uint8_t channel, uint8_t number, uint8_t velocity,
1593                                Evoral::MusicalTime pos, Evoral::MusicalTime len)
1594 {
1595         boost::shared_ptr<NoteType> new_note (new NoteType (channel, pos, len, number, velocity));
1596
1597         /* potentially extend region to hold new note */
1598
1599         framepos_t end_frame = _region->position() + beats_to_frames (new_note->end_time());
1600         framepos_t region_end = _region->position() + _region->length() - 1;
1601
1602         if (end_frame > region_end) {
1603                 _region->set_length (end_frame - _region->position(), this);
1604         }
1605
1606         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1607         MidiStreamView* const view = mtv->midi_view();
1608
1609         view->update_note_range(new_note->note());
1610
1611         _marked_for_selection.clear ();
1612         clear_selection ();
1613
1614         start_note_diff_command (_("step add"));
1615         note_diff_add_note (new_note, true, false);
1616         apply_diff();
1617
1618         // last_step_edit_note = new_note;
1619 }
1620
1621 void
1622 MidiRegionView::step_sustain (Evoral::MusicalTime beats)
1623 {
1624         change_note_lengths (false, false, beats, false, true);
1625 }
1626
1627 void
1628 MidiRegionView::add_canvas_patch_change (MidiModel::PatchChangePtr patch, const string& displaytext)
1629 {
1630         assert (patch->time() >= 0);
1631
1632         const double x = trackview.editor().frame_to_pixel (beats_to_frames (patch->time()));
1633
1634         double const height = midi_stream_view()->contents_height();
1635
1636         boost::shared_ptr<CanvasPatchChange> patch_change = boost::shared_ptr<CanvasPatchChange>(
1637                 new CanvasPatchChange(*this, *_note_group,
1638                                         displaytext,
1639                                         height,
1640                                         x, 1.0,
1641                                         _model_name,
1642                                         _custom_device_mode,
1643                                         patch)
1644                 );
1645
1646         // Show unless patch change is beyond the region bounds
1647         if (patch->time() - _region->start() >= _region->length() || patch->time() < _region->start()) {
1648                 patch_change->hide();
1649         } else {
1650                 patch_change->show();
1651         }
1652
1653         _patch_changes.push_back (patch_change);
1654 }
1655
1656 void
1657 MidiRegionView::get_patch_key_at (Evoral::MusicalTime time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1658 {
1659         MidiModel::PatchChanges::iterator i = _model->patch_change_lower_bound (time);
1660         while (i != _model->patch_changes().end() && (*i)->channel() != channel) {
1661                 ++i;
1662         }
1663
1664         if (i != _model->patch_changes().end()) {
1665                 key.msb = (*i)->bank_msb ();
1666                 key.lsb = (*i)->bank_lsb ();
1667                 key.program_number = (*i)->program ();
1668         } else {
1669                 key.msb = key.lsb = key.program_number = 0;
1670         }
1671
1672         assert (key.is_sane());
1673 }
1674
1675
1676 void
1677 MidiRegionView::change_patch_change (CanvasPatchChange& pc, const MIDI::Name::PatchPrimaryKey& new_patch)
1678 {
1679         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("alter patch change"));
1680
1681         if (pc.patch()->program() != new_patch.program_number) {
1682                 c->change_program (pc.patch (), new_patch.program_number);
1683         }
1684
1685         int const new_bank = (new_patch.msb << 7) | new_patch.lsb;
1686         if (pc.patch()->bank() != new_bank) {
1687                 c->change_bank (pc.patch (), new_bank);
1688         }
1689
1690         _model->apply_command (*trackview.session(), c);
1691
1692         _patch_changes.clear ();
1693         display_patch_changes ();
1694 }
1695
1696 void
1697 MidiRegionView::change_patch_change (MidiModel::PatchChangePtr old_change, const Evoral::PatchChange<Evoral::MusicalTime> & new_change)
1698 {
1699         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("alter patch change"));
1700
1701         if (old_change->time() != new_change.time()) {
1702                 c->change_time (old_change, new_change.time());
1703         }
1704
1705         if (old_change->channel() != new_change.channel()) {
1706                 c->change_channel (old_change, new_change.channel());
1707         }
1708
1709         if (old_change->program() != new_change.program()) {
1710                 c->change_program (old_change, new_change.program());
1711         }
1712
1713         if (old_change->bank() != new_change.bank()) {
1714                 c->change_bank (old_change, new_change.bank());
1715         }
1716
1717         _model->apply_command (*trackview.session(), c);
1718
1719         _patch_changes.clear ();
1720         display_patch_changes ();
1721 }
1722
1723 /** Add a patch change to the region.
1724  *  @param t Time in frames relative to region position
1725  *  @param patch Patch to add; time and channel are ignored (time is converted from t, and channel comes from
1726  *  get_channel_for_add())
1727  */
1728 void
1729 MidiRegionView::add_patch_change (framecnt_t t, Evoral::PatchChange<Evoral::MusicalTime> const & patch)
1730 {
1731         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("add patch change"));
1732         c->add (MidiModel::PatchChangePtr (
1733                         new Evoral::PatchChange<Evoral::MusicalTime> (
1734                                 frames_to_beats (t + midi_region()->start()), get_channel_for_add(), patch.program(), patch.bank()
1735                                 )
1736                         ));
1737
1738         _model->apply_command (*trackview.session(), c);
1739
1740         _patch_changes.clear ();
1741         display_patch_changes ();
1742 }
1743
1744 void
1745 MidiRegionView::move_patch_change (CanvasPatchChange& pc, Evoral::MusicalTime t)
1746 {
1747         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("move patch change"));
1748         c->change_time (pc.patch (), t);
1749         _model->apply_command (*trackview.session(), c);
1750
1751         _patch_changes.clear ();
1752         display_patch_changes ();
1753 }
1754
1755 void
1756 MidiRegionView::delete_patch_change (CanvasPatchChange* pc)
1757 {
1758         MidiModel::PatchChangeDiffCommand* c = _model->new_patch_change_diff_command (_("delete patch change"));
1759         c->remove (pc->patch ());
1760         _model->apply_command (*trackview.session(), c);
1761
1762         _patch_changes.clear ();
1763         display_patch_changes ();
1764 }
1765
1766 void
1767 MidiRegionView::previous_patch (CanvasPatchChange& patch)
1768 {
1769         if (patch.patch()->program() < 127) {
1770                 MIDI::Name::PatchPrimaryKey key;
1771                 get_patch_key_at (patch.patch()->time(), patch.patch()->channel(), key);
1772                 key.program_number++;
1773                 change_patch_change (patch, key);
1774         }
1775 }
1776
1777 void
1778 MidiRegionView::next_patch (CanvasPatchChange& patch)
1779 {
1780         if (patch.patch()->program() > 0) {
1781                 MIDI::Name::PatchPrimaryKey key;
1782                 get_patch_key_at (patch.patch()->time(), patch.patch()->channel(), key);
1783                 key.program_number--;
1784                 change_patch_change (patch, key);
1785         }
1786 }
1787
1788 void
1789 MidiRegionView::maybe_remove_deleted_note_from_selection (CanvasNoteEvent* cne)
1790 {
1791         if (_selection.empty()) {
1792                 return;
1793         }
1794
1795         if (_selection.erase (cne) > 0) {
1796                 cerr << "Erased a CNE from selection\n";
1797         }
1798 }
1799
1800 void
1801 MidiRegionView::delete_selection()
1802 {
1803         if (_selection.empty()) {
1804                 return;
1805         }
1806
1807         start_note_diff_command (_("delete selection"));
1808
1809         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1810                 if ((*i)->selected()) {
1811                         _note_diff_command->remove((*i)->note());
1812                 }
1813         }
1814
1815         _selection.clear();
1816
1817         apply_diff ();
1818 }
1819
1820 void
1821 MidiRegionView::delete_note (boost::shared_ptr<NoteType> n)
1822 {
1823         start_note_diff_command (_("delete note"));
1824         _note_diff_command->remove (n);
1825         apply_diff ();
1826
1827         trackview.editor().hide_verbose_canvas_cursor ();
1828 }
1829
1830 void
1831 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1832 {
1833         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1834                 if ((*i)->selected() && (*i) != ev) {
1835                         (*i)->set_selected(false);
1836                         (*i)->hide_velocity();
1837                 }
1838         }
1839
1840         _selection.clear();
1841 }
1842
1843 void
1844 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1845 {
1846         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
1847                 if ((*i) != ev) {
1848
1849                         Selection::iterator tmp = i;
1850                         ++tmp;
1851
1852                         (*i)->set_selected (false);
1853                         _selection.erase (i);
1854
1855                         i = tmp;
1856
1857                 } else {
1858                         ++i;
1859                 }
1860         }
1861
1862         /* don't bother with removing this regionview from the editor selection,
1863            since we're about to add another note, and thus put/keep this
1864            regionview in the editor selection.
1865         */
1866
1867         if (!ev->selected()) {
1868                 add_to_selection (ev);
1869         }
1870 }
1871
1872 void
1873 MidiRegionView::select_all_notes ()
1874 {
1875         clear_selection ();
1876
1877         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1878                 add_to_selection (*i);
1879         }
1880 }
1881
1882 void
1883 MidiRegionView::select_matching_notes (uint8_t notenum, uint16_t channel_mask, bool add, bool extend)
1884 {
1885         uint8_t low_note = 127;
1886         uint8_t high_note = 0;
1887         MidiModel::Notes& notes (_model->notes());
1888         _optimization_iterator = _events.begin();
1889
1890         if (!add) {
1891                 clear_selection ();
1892         }
1893
1894         if (extend && _selection.empty()) {
1895                 extend = false;
1896         }
1897
1898         if (extend) {
1899
1900                 /* scan existing selection to get note range */
1901
1902                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1903                         if ((*i)->note()->note() < low_note) {
1904                                 low_note = (*i)->note()->note();
1905                         }
1906                         if ((*i)->note()->note() > high_note) {
1907                                 high_note = (*i)->note()->note();
1908                         }
1909                 }
1910
1911                 low_note = min (low_note, notenum);
1912                 high_note = max (high_note, notenum);
1913         }
1914
1915         no_sound_notes = true;
1916
1917         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1918
1919                 boost::shared_ptr<NoteType> note (*n);
1920                 CanvasNoteEvent* cne;
1921                 bool select = false;
1922
1923                 if (((1 << note->channel()) & channel_mask) != 0) {
1924                         if (extend) {
1925                                 if ((note->note() >= low_note && note->note() <= high_note)) {
1926                                         select = true;
1927                                 }
1928                         } else if (note->note() == notenum) {
1929                                 select = true;
1930                         }
1931                 }
1932
1933                 if (select) {
1934                         if ((cne = find_canvas_note (note)) != 0) {
1935                                 // extend is false because we've taken care of it,
1936                                 // since it extends by time range, not pitch.
1937                                 note_selected (cne, add, false);
1938                         }
1939                 }
1940
1941                 add = true; // we need to add all remaining matching notes, even if the passed in value was false (for "set")
1942
1943         }
1944
1945         no_sound_notes = false;
1946 }
1947
1948 void
1949 MidiRegionView::toggle_matching_notes (uint8_t notenum, uint16_t channel_mask)
1950 {
1951         MidiModel::Notes& notes (_model->notes());
1952         _optimization_iterator = _events.begin();
1953
1954         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1955
1956                 boost::shared_ptr<NoteType> note (*n);
1957                 CanvasNoteEvent* cne;
1958
1959                 if (note->note() == notenum && (((0x0001 << note->channel()) & channel_mask) != 0)) {
1960                         if ((cne = find_canvas_note (note)) != 0) {
1961                                 if (cne->selected()) {
1962                                         note_deselected (cne);
1963                                 } else {
1964                                         note_selected (cne, true, false);
1965                                 }
1966                         }
1967                 }
1968         }
1969 }
1970
1971 void
1972 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add, bool extend)
1973 {
1974         if (!add) {
1975                 clear_selection_except(ev);
1976         }
1977
1978         if (!extend) {
1979
1980                 if (!ev->selected()) {
1981                         add_to_selection (ev);
1982                 }
1983
1984         } else {
1985                 /* find end of latest note selected, select all between that and the start of "ev" */
1986
1987                 Evoral::MusicalTime earliest = Evoral::MaxMusicalTime;
1988                 Evoral::MusicalTime latest = 0;
1989
1990                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1991                         if ((*i)->note()->end_time() > latest) {
1992                                 latest = (*i)->note()->end_time();
1993                         }
1994                         if ((*i)->note()->time() < earliest) {
1995                                 earliest = (*i)->note()->time();
1996                         }
1997                 }
1998
1999                 if (ev->note()->end_time() > latest) {
2000                         latest = ev->note()->end_time();
2001                 }
2002
2003                 if (ev->note()->time() < earliest) {
2004                         earliest = ev->note()->time();
2005                 }
2006
2007                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2008
2009                         /* find notes entirely within OR spanning the earliest..latest range */
2010
2011                         if (((*i)->note()->time() >= earliest && (*i)->note()->end_time() <= latest) ||
2012                             ((*i)->note()->time() <= earliest && (*i)->note()->end_time() >= latest)) {
2013                                 add_to_selection (*i);
2014                         }
2015
2016 #if 0
2017                         /* if events were guaranteed to be time sorted, we could do this.
2018                            but as of sept 10th 2009, they no longer are.
2019                         */
2020
2021                         if ((*i)->note()->time() > latest) {
2022                                 break;
2023                         }
2024 #endif
2025                 }
2026         }
2027 }
2028
2029 void
2030 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev)
2031 {
2032         remove_from_selection (ev);
2033 }
2034
2035 void
2036 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
2037 {
2038         if (x1 > x2) {
2039                 swap (x1, x2);
2040         }
2041
2042         if (y1 > y2) {
2043                 swap (y1, y2);
2044         }
2045
2046         // TODO: Make this faster by storing the last updated selection rect, and only
2047         // adjusting things that are in the area that appears/disappeared.
2048         // We probably need a tree to be able to find events in O(log(n)) time.
2049
2050         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2051
2052                 /* check if any corner of the note is inside the rect
2053
2054                    Notes:
2055                      1) this is computing "touched by", not "contained by" the rect.
2056                      2) this does not require that events be sorted in time.
2057                  */
2058
2059                 const double ix1 = (*i)->x1();
2060                 const double ix2 = (*i)->x2();
2061                 const double iy1 = (*i)->y1();
2062                 const double iy2 = (*i)->y2();
2063
2064                 if ((ix1 >= x1 && ix1 <= x2 && iy1 >= y1 && iy1 <= y2) ||
2065                     (ix1 >= x1 && ix1 <= x2 && iy2 >= y1 && iy2 <= y2) ||
2066                     (ix2 >= x1 && ix2 <= x2 && iy1 >= y1 && iy1 <= y2) ||
2067                     (ix2 >= x1 && ix2 <= x2 && iy2 >= y1 && iy2 <= y2)) {
2068
2069                         // Inside rectangle
2070                         if (!(*i)->selected()) {
2071                                 add_to_selection (*i);
2072                         }
2073                 } else if ((*i)->selected()) {
2074                         // Not inside rectangle
2075                         remove_from_selection (*i);
2076                 }
2077         }
2078 }
2079
2080 void
2081 MidiRegionView::remove_from_selection (CanvasNoteEvent* ev)
2082 {
2083         Selection::iterator i = _selection.find (ev);
2084
2085         if (i != _selection.end()) {
2086                 _selection.erase (i);
2087         }
2088
2089         ev->set_selected (false);
2090         ev->hide_velocity ();
2091
2092         if (_selection.empty()) {
2093                 PublicEditor& editor (trackview.editor());
2094                 editor.get_selection().remove (this);
2095         }
2096 }
2097
2098 void
2099 MidiRegionView::add_to_selection (CanvasNoteEvent* ev)
2100 {
2101         bool add_mrv_selection = false;
2102
2103         if (_selection.empty()) {
2104                 add_mrv_selection = true;
2105         }
2106
2107         if (_selection.insert (ev).second) {
2108                 ev->set_selected (true);
2109                 play_midi_note ((ev)->note());
2110         }
2111
2112         if (add_mrv_selection) {
2113                 PublicEditor& editor (trackview.editor());
2114                 editor.get_selection().add (this);
2115         }
2116 }
2117
2118 void
2119 MidiRegionView::move_selection(double dx, double dy, double cumulative_dy)
2120 {
2121         typedef vector<boost::shared_ptr<NoteType> > PossibleChord;
2122         PossibleChord to_play;
2123         Evoral::MusicalTime earliest = Evoral::MaxMusicalTime;
2124
2125         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2126                 if ((*i)->note()->time() < earliest) {
2127                         earliest = (*i)->note()->time();
2128                 }
2129         }
2130
2131         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2132                 if (Evoral::musical_time_equal ((*i)->note()->time(), earliest)) {
2133                         to_play.push_back ((*i)->note());
2134                 }
2135                 (*i)->move_event(dx, dy);
2136         }
2137
2138         if (dy && !_selection.empty() && !no_sound_notes && trackview.editor().sound_notes()) {
2139
2140                 if (to_play.size() > 1) {
2141
2142                         PossibleChord shifted;
2143
2144                         for (PossibleChord::iterator n = to_play.begin(); n != to_play.end(); ++n) {
2145                                 boost::shared_ptr<NoteType> moved_note (new NoteType (**n));
2146                                 moved_note->set_note (moved_note->note() + cumulative_dy);
2147                                 shifted.push_back (moved_note);
2148                         }
2149
2150                         play_midi_chord (shifted);
2151
2152                 } else if (!to_play.empty()) {
2153
2154                         boost::shared_ptr<NoteType> moved_note (new NoteType (*to_play.front()));
2155                         moved_note->set_note (moved_note->note() + cumulative_dy);
2156                         play_midi_note (moved_note);
2157                 }
2158         }
2159 }
2160
2161 void
2162 MidiRegionView::note_dropped(CanvasNoteEvent *, frameoffset_t dt, int8_t dnote)
2163 {
2164         assert (!_selection.empty());
2165
2166         uint8_t lowest_note_in_selection  = 127;
2167         uint8_t highest_note_in_selection = 0;
2168         uint8_t highest_note_difference = 0;
2169
2170         // find highest and lowest notes first
2171
2172         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2173                 uint8_t pitch = (*i)->note()->note();
2174                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
2175                 highest_note_in_selection = std::max(highest_note_in_selection, pitch);
2176         }
2177
2178         /*
2179         cerr << "dnote: " << (int) dnote << endl;
2180         cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
2181              << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
2182         cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
2183              << int(highest_note_in_selection) << endl;
2184         cerr << "selection size: " << _selection.size() << endl;
2185         cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
2186         */
2187
2188         // Make sure the note pitch does not exceed the MIDI standard range
2189         if (highest_note_in_selection + dnote > 127) {
2190                 highest_note_difference = highest_note_in_selection - 127;
2191         }
2192
2193         start_note_diff_command (_("move notes"));
2194
2195         for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ++i) {
2196
2197                 Evoral::MusicalTime new_time = frames_to_beats (beats_to_frames ((*i)->note()->time()) + dt);
2198
2199                 if (new_time < 0) {
2200                         continue;
2201                 }
2202
2203                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::StartTime, new_time);
2204
2205                 uint8_t original_pitch = (*i)->note()->note();
2206                 uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
2207
2208                 // keep notes in standard midi range
2209                 clamp_to_0_127(new_pitch);
2210
2211                 // keep original pitch if note is dragged outside valid midi range
2212                 if ((original_pitch != 0 && new_pitch == 0)
2213                                 || (original_pitch != 127 && new_pitch == 127)) {
2214                         new_pitch = original_pitch;
2215                 }
2216
2217                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
2218                 highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
2219
2220                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::NoteNumber, new_pitch);
2221         }
2222
2223         apply_diff();
2224
2225         // care about notes being moved beyond the upper/lower bounds on the canvas
2226         if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
2227             highest_note_in_selection > midi_stream_view()->highest_note()) {
2228                 midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
2229         }
2230 }
2231
2232 framepos_t
2233 MidiRegionView::snap_pixel_to_frame(double x)
2234 {
2235         PublicEditor& editor = trackview.editor();
2236         // x is region relative, convert it to global absolute frames
2237         framepos_t frame = editor.pixel_to_frame(x) + _region->position();
2238         editor.snap_to(frame);
2239         return frame - _region->position(); // convert back to region relative
2240 }
2241
2242 framepos_t
2243 MidiRegionView::snap_frame_to_frame(framepos_t x)
2244 {
2245         PublicEditor& editor = trackview.editor();
2246         // x is region relative, convert it to global absolute frames
2247         framepos_t frame = x + _region->position();
2248         editor.snap_to(frame);
2249         return frame - _region->position(); // convert back to region relative
2250 }
2251
2252 double
2253 MidiRegionView::snap_to_pixel(double x)
2254 {
2255         return (double) trackview.editor().frame_to_pixel(snap_pixel_to_frame(x));
2256 }
2257
2258 double
2259 MidiRegionView::get_position_pixels()
2260 {
2261         framepos_t region_frame = get_position();
2262         return trackview.editor().frame_to_pixel(region_frame);
2263 }
2264
2265 double
2266 MidiRegionView::get_end_position_pixels()
2267 {
2268         framepos_t frame = get_position() + get_duration ();
2269         return trackview.editor().frame_to_pixel(frame);
2270 }
2271
2272 framepos_t
2273 MidiRegionView::beats_to_frames(double beats) const
2274 {
2275         return _time_converter.to(beats);
2276 }
2277
2278 double
2279 MidiRegionView::frames_to_beats(framepos_t frames) const
2280 {
2281         return _time_converter.from(frames);
2282 }
2283
2284 void
2285 MidiRegionView::begin_resizing (bool /*at_front*/)
2286 {
2287         _resize_data.clear();
2288
2289         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2290                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
2291
2292                 // only insert CanvasNotes into the map
2293                 if (note) {
2294                         NoteResizeData *resize_data = new NoteResizeData();
2295                         resize_data->canvas_note = note;
2296
2297                         // create a new SimpleRect from the note which will be the resize preview
2298                         SimpleRect *resize_rect = new SimpleRect(
2299                                         *_note_group, note->x1(), note->y1(), note->x2(), note->y2());
2300
2301                         // calculate the colors: get the color settings
2302                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
2303                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
2304                                         128);
2305
2306                         // make the resize preview notes more transparent and bright
2307                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
2308
2309                         // calculate color based on note velocity
2310                         resize_rect->property_fill_color_rgba() = UINT_INTERPOLATE(
2311                                 CanvasNoteEvent::meter_style_fill_color(note->note()->velocity(), note->selected()),
2312                                         fill_color,
2313                                         0.85);
2314
2315                         resize_rect->property_outline_color_rgba() = CanvasNoteEvent::calculate_outline(
2316                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
2317
2318                         resize_data->resize_rect = resize_rect;
2319                         _resize_data.push_back(resize_data);
2320                 }
2321         }
2322 }
2323
2324 /** Update resizing notes while user drags.
2325  * @param primary `primary' note for the drag; ie the one that is used as the reference in non-relative mode.
2326  * @param at_front which end of the note (true == note on, false == note off)
2327  * @param delta_x change in mouse position since the start of the drag
2328  * @param relative true if relative resizing is taking place, false if absolute resizing.  This only makes
2329  * a difference when multiple notes are being resized; in relative mode, each note's length is changed by the
2330  * amount of the drag.  In non-relative mode, all selected notes are set to have the same start or end point
2331  * as the \a primary note.
2332  */
2333 void
2334 MidiRegionView::update_resizing (ArdourCanvas::CanvasNoteEvent* primary, bool at_front, double delta_x, bool relative)
2335 {
2336         bool cursor_set = false;
2337
2338         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2339                 SimpleRect* resize_rect = (*i)->resize_rect;
2340                 CanvasNote* canvas_note = (*i)->canvas_note;
2341                 double current_x;
2342
2343                 if (at_front) {
2344                         if (relative) {
2345                                 current_x = canvas_note->x1() + delta_x;
2346                         } else {
2347                                 current_x = primary->x1() + delta_x;
2348                         }
2349                 } else {
2350                         if (relative) {
2351                                 current_x = canvas_note->x2() + delta_x;
2352                         } else {
2353                                 current_x = primary->x2() + delta_x;
2354                         }
2355                 }
2356
2357                 if (at_front) {
2358                         resize_rect->property_x1() = snap_to_pixel(current_x);
2359                         resize_rect->property_x2() = canvas_note->x2();
2360                 } else {
2361                         resize_rect->property_x2() = snap_to_pixel(current_x);
2362                         resize_rect->property_x1() = canvas_note->x1();
2363                 }
2364
2365                 if (!cursor_set) {
2366                         double beats;
2367
2368                         beats = snap_pixel_to_frame (current_x);
2369                         beats = frames_to_beats (beats);
2370
2371                         double len;
2372
2373                         if (at_front) {
2374                                 if (beats < canvas_note->note()->end_time()) {
2375                                         len = canvas_note->note()->time() - beats;
2376                                         len += canvas_note->note()->length();
2377                                 } else {
2378                                         len = 0;
2379                                 }
2380                         } else {
2381                                 if (beats >= canvas_note->note()->time()) {
2382                                         len = beats - canvas_note->note()->time();
2383                                 } else {
2384                                         len = 0;
2385                                 }
2386                         }
2387
2388                         char buf[16];
2389                         snprintf (buf, sizeof (buf), "%.3g beats", len);
2390                         trackview.editor().show_verbose_canvas_cursor_with (buf);
2391
2392                         cursor_set = true;
2393                 }
2394
2395         }
2396 }
2397
2398
2399 /** Finish resizing notes when the user releases the mouse button.
2400  *  Parameters the same as for \a update_resizing().
2401  */
2402 void
2403 MidiRegionView::commit_resizing (ArdourCanvas::CanvasNoteEvent* primary, bool at_front, double delta_x, bool relative)
2404 {
2405         start_note_diff_command (_("resize notes"));
2406
2407         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2408                 CanvasNote*  canvas_note = (*i)->canvas_note;
2409                 SimpleRect*  resize_rect = (*i)->resize_rect;
2410                 double current_x;
2411
2412                 if (at_front) {
2413                         if (relative) {
2414                                 current_x = canvas_note->x1() + delta_x;
2415                         } else {
2416                                 current_x = primary->x1() + delta_x;
2417                         }
2418                 } else {
2419                         if (relative) {
2420                                 current_x = canvas_note->x2() + delta_x;
2421                         } else {
2422                                 current_x = primary->x2() + delta_x;
2423                         }
2424                 }
2425
2426                 current_x = snap_pixel_to_frame (current_x);
2427                 current_x = frames_to_beats (current_x);
2428
2429                 if (at_front && current_x < canvas_note->note()->end_time()) {
2430                         note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::StartTime, current_x);
2431
2432                         double len = canvas_note->note()->time() - current_x;
2433                         len += canvas_note->note()->length();
2434
2435                         if (len > 0) {
2436                                 /* XXX convert to beats */
2437                                 note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::Length, len);
2438                         }
2439                 }
2440
2441                 if (!at_front) {
2442                         double len = current_x - canvas_note->note()->time();
2443
2444                         if (len > 0) {
2445                                 /* XXX convert to beats */
2446                                 note_diff_add_change (canvas_note, MidiModel::NoteDiffCommand::Length, len);
2447                         }
2448                 }
2449
2450                 delete resize_rect;
2451                 delete (*i);
2452         }
2453
2454         _resize_data.clear();
2455         apply_diff();
2456 }
2457
2458 void
2459 MidiRegionView::change_note_channel (CanvasNoteEvent* event, int8_t channel)
2460 {
2461         note_diff_add_change (event, MidiModel::NoteDiffCommand::Channel, (uint8_t) channel);
2462 }
2463
2464 void
2465 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
2466 {
2467         uint8_t new_velocity;
2468
2469         if (relative) {
2470                 new_velocity = event->note()->velocity() + velocity;
2471                 clamp_to_0_127(new_velocity);
2472         } else {
2473                 new_velocity = velocity;
2474         }
2475
2476         event->set_selected (event->selected()); // change color
2477
2478         note_diff_add_change (event, MidiModel::NoteDiffCommand::Velocity, new_velocity);
2479 }
2480
2481 void
2482 MidiRegionView::change_note_note (CanvasNoteEvent* event, int8_t note, bool relative)
2483 {
2484         uint8_t new_note;
2485
2486         if (relative) {
2487                 new_note = event->note()->note() + note;
2488         } else {
2489                 new_note = note;
2490         }
2491
2492         clamp_to_0_127 (new_note);
2493         note_diff_add_change (event, MidiModel::NoteDiffCommand::NoteNumber, new_note);
2494 }
2495
2496 void
2497 MidiRegionView::trim_note (CanvasNoteEvent* event, Evoral::MusicalTime front_delta, Evoral::MusicalTime end_delta)
2498 {
2499         bool change_start = false;
2500         bool change_length = false;
2501         Evoral::MusicalTime new_start = 0;
2502         Evoral::MusicalTime new_length = 0;
2503
2504         /* NOTE: the semantics of the two delta arguments are slightly subtle:
2505
2506            front_delta: if positive - move the start of the note later in time (shortening it)
2507                         if negative - move the start of the note earlier in time (lengthening it)
2508
2509            end_delta:   if positive - move the end of the note later in time (lengthening it)
2510                         if negative - move the end of the note earlier in time (shortening it)
2511          */
2512
2513         if (front_delta) {
2514                 if (front_delta < 0) {
2515
2516                         if (event->note()->time() < -front_delta) {
2517                                 new_start = 0;
2518                         } else {
2519                                 new_start = event->note()->time() + front_delta; // moves earlier
2520                         }
2521
2522                         /* start moved toward zero, so move the end point out to where it used to be.
2523                            Note that front_delta is negative, so this increases the length.
2524                         */
2525
2526                         new_length = event->note()->length() - front_delta;
2527                         change_start = true;
2528                         change_length = true;
2529
2530                 } else {
2531
2532                         Evoral::MusicalTime new_pos = event->note()->time() + front_delta;
2533
2534                         if (new_pos < event->note()->end_time()) {
2535                                 new_start = event->note()->time() + front_delta;
2536                                 /* start moved toward the end, so move the end point back to where it used to be */
2537                                 new_length = event->note()->length() - front_delta;
2538                                 change_start = true;
2539                                 change_length = true;
2540                         }
2541                 }
2542
2543         }
2544
2545         if (end_delta) {
2546                 bool can_change = true;
2547                 if (end_delta < 0) {
2548                         if (event->note()->length() < -end_delta) {
2549                                 can_change = false;
2550                         }
2551                 }
2552
2553                 if (can_change) {
2554                         new_length = event->note()->length() + end_delta;
2555                         change_length = true;
2556                 }
2557         }
2558
2559         if (change_start) {
2560                 note_diff_add_change (event, MidiModel::NoteDiffCommand::StartTime, new_start);
2561         }
2562
2563         if (change_length) {
2564                 note_diff_add_change (event, MidiModel::NoteDiffCommand::Length, new_length);
2565         }
2566 }
2567
2568 void
2569 MidiRegionView::change_note_time (CanvasNoteEvent* event, Evoral::MusicalTime delta, bool relative)
2570 {
2571         Evoral::MusicalTime new_time;
2572
2573         if (relative) {
2574                 if (delta < 0.0) {
2575                         if (event->note()->time() < -delta) {
2576                                 new_time = 0;
2577                         } else {
2578                                 new_time = event->note()->time() + delta;
2579                         }
2580                 } else {
2581                         new_time = event->note()->time() + delta;
2582                 }
2583         } else {
2584                 new_time = delta;
2585         }
2586
2587         note_diff_add_change (event, MidiModel::NoteDiffCommand::StartTime, new_time);
2588 }
2589
2590 void
2591 MidiRegionView::change_note_length (CanvasNoteEvent* event, Evoral::MusicalTime t)
2592 {
2593         note_diff_add_change (event, MidiModel::NoteDiffCommand::Length, t);
2594 }
2595
2596 void
2597 MidiRegionView::change_velocities (bool up, bool fine, bool allow_smush)
2598 {
2599         int8_t delta;
2600
2601         if (_selection.empty()) {
2602                 return;
2603         }
2604
2605         if (fine) {
2606                 delta = 1;
2607         } else {
2608                 delta = 10;
2609         }
2610
2611         if (!up) {
2612                 delta = -delta;
2613         }
2614
2615         if (!allow_smush) {
2616                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2617                         if ((*i)->note()->velocity() + delta == 0 || (*i)->note()->velocity() + delta == 127) {
2618                                 return;
2619                         }
2620                 }
2621         }
2622
2623         start_note_diff_command (_("change velocities"));
2624
2625         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
2626                 Selection::iterator next = i;
2627                 ++next;
2628                 change_note_velocity (*i, delta, true);
2629                 i = next;
2630         }
2631
2632         apply_diff();
2633
2634         if (!_selection.empty()) {
2635                 char buf[24];
2636                 snprintf (buf, sizeof (buf), "Vel %d",
2637                           (int) (*_selection.begin())->note()->velocity());
2638                 trackview.editor().show_verbose_canvas_cursor_with (buf, 10, 10);
2639         }
2640 }
2641
2642
2643 void
2644 MidiRegionView::transpose (bool up, bool fine, bool allow_smush)
2645 {
2646         if (_selection.empty()) {
2647                 return;
2648         }
2649
2650         int8_t delta;
2651
2652         if (fine) {
2653                 delta = 1;
2654         } else {
2655                 delta = 12;
2656         }
2657
2658         if (!up) {
2659                 delta = -delta;
2660         }
2661
2662         if (!allow_smush) {
2663                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2664                         if (!up) {
2665                                 if ((int8_t) (*i)->note()->note() + delta <= 0) {
2666                                         return;
2667                                 }
2668                         } else {
2669                                 if ((int8_t) (*i)->note()->note() + delta > 127) {
2670                                         return;
2671                                 }
2672                         }
2673                 }
2674         }
2675
2676         start_note_diff_command (_("transpose"));
2677
2678         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2679                 Selection::iterator next = i;
2680                 ++next;
2681                 change_note_note (*i, delta, true);
2682                 i = next;
2683         }
2684
2685         apply_diff ();
2686 }
2687
2688 void
2689 MidiRegionView::change_note_lengths (bool fine, bool shorter, Evoral::MusicalTime delta, bool start, bool end)
2690 {
2691         if (delta == 0.0) {
2692                 if (fine) {
2693                         delta = 1.0/128.0;
2694                 } else {
2695                         /* grab the current grid distance */
2696                         bool success;
2697                         delta = trackview.editor().get_grid_type_as_beats (success, _region->position());
2698                         if (!success) {
2699                                 /* XXX cannot get grid type as beats ... should always be possible ... FIX ME */
2700                                 cerr << "Grid type not available as beats - TO BE FIXED\n";
2701                                 return;
2702                         }
2703                 }
2704         }
2705
2706         if (shorter) {
2707                 delta = -delta;
2708         }
2709
2710         start_note_diff_command (_("change note lengths"));
2711
2712         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2713                 Selection::iterator next = i;
2714                 ++next;
2715
2716                 /* note the negation of the delta for start */
2717
2718                 trim_note (*i, (start ? -delta : 0), (end ? delta : 0));
2719                 i = next;
2720         }
2721
2722         apply_diff ();
2723
2724 }
2725
2726 void
2727 MidiRegionView::nudge_notes (bool forward)
2728 {
2729         if (_selection.empty()) {
2730                 return;
2731         }
2732
2733         /* pick a note as the point along the timeline to get the nudge distance.
2734            its not necessarily the earliest note, so we may want to pull the notes out
2735            into a vector and sort before using the first one.
2736         */
2737
2738         framepos_t ref_point = _region->position() + beats_to_frames ((*(_selection.begin()))->note()->time());
2739         framepos_t unused;
2740         framepos_t distance;
2741
2742         if (trackview.editor().snap_mode() == Editing::SnapOff) {
2743
2744                 /* grid is off - use nudge distance */
2745
2746                 distance = trackview.editor().get_nudge_distance (ref_point, unused);
2747
2748         } else {
2749
2750                 /* use grid */
2751
2752                 framepos_t next_pos = ref_point;
2753
2754                 if (forward) {
2755                         if (max_framepos - 1 < next_pos) {
2756                                 next_pos += 1;
2757                         }
2758                 } else {
2759                         if (next_pos == 0) {
2760                                 return;
2761                         }
2762                         next_pos -= 1;
2763                 }
2764
2765                 trackview.editor().snap_to (next_pos, (forward ? 1 : -1), false);
2766                 distance = ref_point - next_pos;
2767         }
2768
2769         if (distance == 0) {
2770                 return;
2771         }
2772
2773         Evoral::MusicalTime delta = frames_to_beats (fabs (distance));
2774
2775         if (!forward) {
2776                 delta = -delta;
2777         }
2778
2779         start_note_diff_command (_("nudge"));
2780
2781         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2782                 Selection::iterator next = i;
2783                 ++next;
2784                 change_note_time (*i, delta, true);
2785                 i = next;
2786         }
2787
2788         apply_diff ();
2789 }
2790
2791 void
2792 MidiRegionView::change_channel(uint8_t channel)
2793 {
2794         start_note_diff_command(_("change channel"));
2795         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2796                 note_diff_add_change (*i, MidiModel::NoteDiffCommand::Channel, channel);
2797         }
2798
2799         apply_diff();
2800 }
2801
2802
2803 void
2804 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
2805 {
2806         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
2807
2808         pre_enter_cursor = editor->get_canvas_cursor ();
2809
2810         if (_mouse_state == SelectTouchDragging) {
2811                 note_selected (ev, true);
2812         }
2813
2814         show_verbose_canvas_cursor (ev->note ());
2815 }
2816
2817 void
2818 MidiRegionView::note_left (ArdourCanvas::CanvasNoteEvent*)
2819 {
2820         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
2821
2822         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2823                 (*i)->hide_velocity ();
2824         }
2825
2826         editor->hide_verbose_canvas_cursor ();
2827
2828         if (pre_enter_cursor) {
2829                 editor->set_canvas_cursor (pre_enter_cursor);
2830                 pre_enter_cursor = 0;
2831         }
2832 }
2833
2834 void
2835 MidiRegionView::patch_entered (ArdourCanvas::CanvasPatchChange* ev)
2836 {
2837         ostringstream s;
2838         s << ((int) ev->patch()->program() + 1) << ":" << (ev->patch()->bank() + 1);
2839         trackview.editor().show_verbose_canvas_cursor_with (s.str().c_str(), 10, 20);
2840 }
2841
2842 void
2843 MidiRegionView::patch_left (ArdourCanvas::CanvasPatchChange *)
2844 {
2845         trackview.editor().hide_verbose_canvas_cursor ();
2846 }
2847
2848 void
2849 MidiRegionView::note_mouse_position (float x_fraction, float /*y_fraction*/, bool can_set_cursor)
2850 {
2851         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
2852
2853         if (x_fraction > 0.0 && x_fraction < 0.25) {
2854                 editor->set_canvas_cursor (editor->cursors()->left_side_trim);
2855         } else if (x_fraction >= 0.75 && x_fraction < 1.0) {
2856                 editor->set_canvas_cursor (editor->cursors()->right_side_trim);
2857         } else {
2858                 if (pre_enter_cursor && can_set_cursor) {
2859                         editor->set_canvas_cursor (pre_enter_cursor);
2860                 }
2861         }
2862 }
2863
2864 void
2865 MidiRegionView::set_frame_color()
2866 {
2867         uint32_t f;
2868
2869         TimeAxisViewItem::set_frame_color ();
2870
2871         if (!frame) {
2872                 return;
2873         }
2874
2875         if (_selected) {
2876                 f = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
2877         } else if (high_enough_for_name) {
2878                 f= ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
2879         } else {
2880                 f = fill_color;
2881         }
2882
2883         if (!rect_visible) {
2884                 f = UINT_RGBA_CHANGE_A (f, 0);
2885         }
2886
2887         frame->property_fill_color_rgba() = f;
2888 }
2889
2890 void
2891 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
2892 {
2893         switch (mode) {
2894         case AllChannels:
2895         case FilterChannels:
2896                 _force_channel = -1;
2897                 break;
2898         case ForceChannel:
2899                 _force_channel = mask;
2900                 mask = 0xFFFF; // Show all notes as active (below)
2901         };
2902
2903         // Update notes for selection
2904         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2905                 (*i)->on_channel_selection_change(mask);
2906         }
2907
2908         _last_channel_selection = mask;
2909
2910         _patch_changes.clear ();
2911         display_patch_changes ();
2912 }
2913
2914 void
2915 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
2916 {
2917         _model_name         = model;
2918         _custom_device_mode = custom_device_mode;
2919         redisplay_model();
2920 }
2921
2922 void
2923 MidiRegionView::cut_copy_clear (Editing::CutCopyOp op)
2924 {
2925         if (_selection.empty()) {
2926                 return;
2927         }
2928
2929         PublicEditor& editor (trackview.editor());
2930
2931         switch (op) {
2932         case Cut:
2933         case Copy:
2934                 editor.get_cut_buffer().add (selection_as_cut_buffer());
2935                 break;
2936         default:
2937                 break;
2938         }
2939
2940         if (op != Copy) {
2941
2942                 start_note_diff_command();
2943
2944                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2945                         switch (op) {
2946                         case Copy:
2947                                 break;
2948                         case Cut:
2949                         case Clear:
2950                                 note_diff_remove_note (*i);
2951                                 break;
2952                         }
2953                 }
2954
2955                 apply_diff();
2956         }
2957 }
2958
2959 MidiCutBuffer*
2960 MidiRegionView::selection_as_cut_buffer () const
2961 {
2962         Notes notes;
2963
2964         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2965                 NoteType* n = (*i)->note().get();
2966                 notes.insert (boost::shared_ptr<NoteType> (new NoteType (*n)));
2967         }
2968
2969         MidiCutBuffer* cb = new MidiCutBuffer (trackview.session());
2970         cb->set (notes);
2971
2972         return cb;
2973 }
2974
2975 /** This method handles undo */
2976 void
2977 MidiRegionView::paste (framepos_t pos, float times, const MidiCutBuffer& mcb)
2978 {
2979         if (mcb.empty()) {
2980                 return;
2981         }
2982
2983         DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("MIDI paste @ %1 times %2\n", pos, times));
2984
2985         trackview.session()->begin_reversible_command (_("paste"));
2986
2987         start_note_diff_command (_("paste"));
2988
2989         Evoral::MusicalTime beat_delta;
2990         Evoral::MusicalTime paste_pos_beats;
2991         Evoral::MusicalTime duration;
2992         Evoral::MusicalTime end_point = 0;
2993
2994         duration = (*mcb.notes().rbegin())->end_time() - (*mcb.notes().begin())->time();
2995         paste_pos_beats = frames_to_beats (pos - _region->position());
2996         beat_delta = (*mcb.notes().begin())->time() - paste_pos_beats;
2997         paste_pos_beats = 0;
2998
2999         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",
3000                                                        (*mcb.notes().begin())->time(),
3001                                                        (*mcb.notes().rbegin())->end_time(),
3002                                                        duration, pos, _region->position(),
3003                                                        paste_pos_beats, beat_delta));
3004
3005         clear_selection ();
3006
3007         for (int n = 0; n < (int) times; ++n) {
3008
3009                 for (Notes::const_iterator i = mcb.notes().begin(); i != mcb.notes().end(); ++i) {
3010
3011                         boost::shared_ptr<NoteType> copied_note (new NoteType (*((*i).get())));
3012                         copied_note->set_time (paste_pos_beats + copied_note->time() - beat_delta);
3013
3014                         /* make all newly added notes selected */
3015
3016                         note_diff_add_note (copied_note, true);
3017                         end_point = copied_note->end_time();
3018                 }
3019
3020                 paste_pos_beats += duration;
3021         }
3022
3023         /* if we pasted past the current end of the region, extend the region */
3024
3025         framepos_t end_frame = _region->position() + beats_to_frames (end_point);
3026         framepos_t region_end = _region->position() + _region->length() - 1;
3027
3028         if (end_frame > region_end) {
3029
3030                 DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("Paste extended region from %1 to %2\n", region_end, end_frame));
3031
3032                 _region->clear_changes ();
3033                 _region->set_length (end_frame, this);
3034                 trackview.session()->add_command (new StatefulDiffCommand (_region));
3035         }
3036
3037         apply_diff (true);
3038
3039         trackview.session()->commit_reversible_command ();
3040 }
3041
3042 struct EventNoteTimeEarlyFirstComparator {
3043     bool operator() (CanvasNoteEvent* a, CanvasNoteEvent* b) {
3044             return a->note()->time() < b->note()->time();
3045     }
3046 };
3047
3048 void
3049 MidiRegionView::time_sort_events ()
3050 {
3051         if (!_sort_needed) {
3052                 return;
3053         }
3054
3055         EventNoteTimeEarlyFirstComparator cmp;
3056         _events.sort (cmp);
3057
3058         _sort_needed = false;
3059 }
3060
3061 void
3062 MidiRegionView::goto_next_note ()
3063 {
3064         // framepos_t pos = -1;
3065         bool use_next = false;
3066
3067         if (_events.back()->selected()) {
3068                 return;
3069         }
3070
3071         time_sort_events ();
3072
3073         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3074                 if ((*i)->selected()) {
3075                         use_next = true;
3076                         continue;
3077                 } else if (use_next) {
3078                         unique_select (*i);
3079                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
3080                         return;
3081                 }
3082         }
3083
3084         /* use the first one */
3085
3086         unique_select (_events.front());
3087
3088 }
3089
3090 void
3091 MidiRegionView::goto_previous_note ()
3092 {
3093         // framepos_t pos = -1;
3094         bool use_next = false;
3095
3096         if (_events.front()->selected()) {
3097                 return;
3098         }
3099
3100         time_sort_events ();
3101
3102         for (Events::reverse_iterator i = _events.rbegin(); i != _events.rend(); ++i) {
3103                 if ((*i)->selected()) {
3104                         use_next = true;
3105                         continue;
3106                 } else if (use_next) {
3107                         unique_select (*i);
3108                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
3109                         return;
3110                 }
3111         }
3112
3113         /* use the last one */
3114
3115         unique_select (*(_events.rbegin()));
3116 }
3117
3118 void
3119 MidiRegionView::selection_as_notelist (Notes& selected, bool allow_all_if_none_selected)
3120 {
3121         bool had_selected = false;
3122
3123         time_sort_events ();
3124
3125         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3126                 if ((*i)->selected()) {
3127                         selected.insert ((*i)->note());
3128                         had_selected = true;
3129                 }
3130         }
3131
3132         if (allow_all_if_none_selected && !had_selected) {
3133                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3134                         selected.insert ((*i)->note());
3135                 }
3136         }
3137 }
3138
3139 void
3140 MidiRegionView::update_ghost_note (double x, double y)
3141 {
3142         _last_ghost_x = x;
3143         _last_ghost_y = y;
3144
3145         _note_group->w2i (x, y);
3146         framepos_t f = trackview.editor().pixel_to_frame (x) + _region->position ();
3147         trackview.editor().snap_to (f);
3148         f -= _region->position ();
3149
3150         bool success;
3151         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, f);
3152
3153         if (!success) {
3154                 beats = 1;
3155         }
3156
3157         double length = frames_to_beats (snap_frame_to_frame (f + beats_to_frames (beats)) - f);
3158
3159         _ghost_note->note()->set_time (frames_to_beats (f + _region->start()));
3160         _ghost_note->note()->set_length (length);
3161         _ghost_note->note()->set_note (midi_stream_view()->y_to_note (y));
3162
3163         /* the ghost note does not appear in ghost regions, so pass false in here */
3164         update_note (_ghost_note, false);
3165
3166         show_verbose_canvas_cursor (_ghost_note->note ());
3167 }
3168
3169 void
3170 MidiRegionView::create_ghost_note (double x, double y)
3171 {
3172         delete _ghost_note;
3173         _ghost_note = 0;
3174
3175         boost::shared_ptr<NoteType> g (new NoteType);
3176         _ghost_note = new NoEventCanvasNote (*this, *_note_group, g);
3177         _ghost_note->property_outline_color_rgba() = 0x000000aa;
3178         update_ghost_note (x, y);
3179         _ghost_note->show ();
3180
3181         _last_ghost_x = x;
3182         _last_ghost_y = y;
3183
3184         show_verbose_canvas_cursor (_ghost_note->note ());
3185 }
3186
3187 void
3188 MidiRegionView::snap_changed ()
3189 {
3190         if (!_ghost_note) {
3191                 return;
3192         }
3193
3194         create_ghost_note (_last_ghost_x, _last_ghost_y);
3195 }
3196
3197 void
3198 MidiRegionView::show_verbose_canvas_cursor (boost::shared_ptr<NoteType> n) const
3199 {
3200         char buf[24];
3201         snprintf (buf, sizeof (buf), "%s (%d)\nVel %d",
3202                   Evoral::midi_note_name (n->note()).c_str(),
3203                   (int) n->note (),
3204                   (int) n->velocity());
3205         trackview.editor().show_verbose_canvas_cursor_with (buf, 10, 20);
3206 }
3207
3208 void
3209 MidiRegionView::drop_down_keys ()
3210 {
3211         _mouse_state = None;
3212 }
3213
3214 void
3215 MidiRegionView::maybe_select_by_position (GdkEventButton* ev, double /*x*/, double y)
3216 {
3217         double note = midi_stream_view()->y_to_note(y);
3218         Events e;
3219         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3220
3221         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
3222
3223         if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
3224                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchGreaterThanOrEqual, (uint8_t) floor (note), chn_mask);
3225         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
3226                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchLessThanOrEqual, (uint8_t) floor (note), chn_mask);
3227         } else {
3228                 return;
3229         }
3230
3231         bool add_mrv_selection = false;
3232
3233         if (_selection.empty()) {
3234                 add_mrv_selection = true;
3235         }
3236
3237         for (Events::iterator i = e.begin(); i != e.end(); ++i) {
3238                 if (_selection.insert (*i).second) {
3239                         (*i)->set_selected (true);
3240                 }
3241         }
3242
3243         if (add_mrv_selection) {
3244                 PublicEditor& editor (trackview.editor());
3245                 editor.get_selection().add (this);
3246         }
3247 }
3248
3249 void
3250 MidiRegionView::color_handler ()
3251 {
3252         RegionView::color_handler ();
3253
3254         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3255                 (*i)->set_selected ((*i)->selected()); // will change color
3256         }
3257
3258         /* XXX probably more to do here */
3259 }
3260
3261 void
3262 MidiRegionView::enable_display (bool yn)
3263 {
3264         RegionView::enable_display (yn);
3265         if (yn) {
3266                 redisplay_model ();
3267         }
3268 }
3269
3270 void
3271 MidiRegionView::show_step_edit_cursor (Evoral::MusicalTime pos)
3272 {
3273         if (_step_edit_cursor == 0) {
3274                 ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
3275
3276                 _step_edit_cursor = new ArdourCanvas::SimpleRect (*group);
3277                 _step_edit_cursor->property_y1() = 0;
3278                 _step_edit_cursor->property_y2() = midi_stream_view()->contents_height();
3279                 _step_edit_cursor->property_fill_color_rgba() = RGBA_TO_UINT (45,0,0,90);
3280                 _step_edit_cursor->property_outline_color_rgba() = RGBA_TO_UINT (85,0,0,90);
3281         }
3282
3283         move_step_edit_cursor (pos);
3284         _step_edit_cursor->show ();
3285 }
3286
3287 void
3288 MidiRegionView::move_step_edit_cursor (Evoral::MusicalTime pos)
3289 {
3290         _step_edit_cursor_position = pos;
3291
3292         if (_step_edit_cursor) {
3293                 double pixel = trackview.editor().frame_to_pixel (beats_to_frames (pos));
3294                 _step_edit_cursor->property_x1() = pixel;
3295                 set_step_edit_cursor_width (_step_edit_cursor_width);
3296         }
3297 }
3298
3299 void
3300 MidiRegionView::hide_step_edit_cursor ()
3301 {
3302         if (_step_edit_cursor) {
3303                 _step_edit_cursor->hide ();
3304         }
3305 }
3306
3307 void
3308 MidiRegionView::set_step_edit_cursor_width (Evoral::MusicalTime beats)
3309 {
3310         _step_edit_cursor_width = beats;
3311
3312         if (_step_edit_cursor) {
3313                 _step_edit_cursor->property_x2() = _step_edit_cursor->property_x1() + trackview.editor().frame_to_pixel (beats_to_frames (beats));
3314         }
3315 }
3316
3317 /** Called when a diskstream on our track has received some data.  Update the view, if applicable.
3318  *  @param buf Data that has been recorded.
3319  *  @param w Source that this data will end up in.
3320  */
3321 void
3322 MidiRegionView::data_recorded (boost::shared_ptr<MidiBuffer> buf, boost::weak_ptr<MidiSource> w)
3323 {
3324         if (!_active_notes) {
3325                 /* we aren't actively being recorded to */
3326                 return;
3327         }
3328
3329         boost::shared_ptr<MidiSource> src = w.lock ();
3330         if (!src || src != midi_region()->midi_source()) {
3331                 /* recorded data was not destined for our source */
3332                 return;
3333         }
3334
3335         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&trackview);
3336         BeatsFramesConverter converter (trackview.session()->tempo_map(), mtv->midi_track()->get_capture_start_frame (0));
3337
3338         framepos_t back = max_framepos;
3339
3340         for (MidiBuffer::iterator i = buf->begin(); i != buf->end(); ++i) {
3341                 Evoral::MIDIEvent<MidiBuffer::TimeType> const ev (*i, false);
3342                 assert (ev.buffer ());
3343
3344                 Evoral::MusicalTime const time_beats = converter.from (ev.time () - converter.origin_b ());
3345
3346                 if (ev.type() == MIDI_CMD_NOTE_ON) {
3347
3348                         boost::shared_ptr<NoteType> note (
3349                                 new NoteType (ev.channel(), time_beats, 0, ev.note(), ev.velocity())
3350                                 );
3351
3352                         add_note (note, true);
3353
3354                         /* fix up our note range */
3355                         if (ev.note() < _current_range_min) {
3356                                 midi_stream_view()->apply_note_range (ev.note(), _current_range_max, true);
3357                         } else if (ev.note() > _current_range_max) {
3358                                 midi_stream_view()->apply_note_range (_current_range_min, ev.note(), true);
3359                         }
3360
3361                 } else if (ev.type() == MIDI_CMD_NOTE_OFF) {
3362                         resolve_note (ev.note (), time_beats);
3363                 }
3364
3365                 back = ev.time ();
3366         }
3367
3368         midi_stream_view()->check_record_layers (region(), back);
3369 }
3370
3371 void
3372 MidiRegionView::trim_front_starting ()
3373 {
3374         /* Reparent the note group to the region view's parent, so that it doesn't change
3375            when the region view is trimmed.
3376         */
3377         _temporary_note_group = new ArdourCanvas::Group (*group->property_parent ());
3378         _temporary_note_group->move (group->property_x(), group->property_y());
3379         _note_group->reparent (*_temporary_note_group);
3380 }
3381
3382 void
3383 MidiRegionView::trim_front_ending ()
3384 {
3385         _note_group->reparent (*group);
3386         delete _temporary_note_group;
3387         _temporary_note_group = 0;
3388
3389         if (_region->start() < 0) {
3390                 /* Trim drag made start time -ve; fix this */
3391                 midi_region()->fix_negative_start ();
3392         }
3393 }
3394
3395 /** @return channel (counted from 0) to add an event to, based on the current setting
3396  *  of the channel selector.
3397  */
3398 uint8_t
3399 MidiRegionView::get_channel_for_add () const
3400 {
3401         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3402         uint16_t const chn_mask = mtv->channel_selector().get_selected_channels();
3403         int chn_cnt = 0;
3404         uint8_t channel = 0;
3405
3406         /* pick the highest selected channel, unless all channels are selected,
3407            which is interpreted to mean channel 1 (zero)
3408         */
3409
3410         for (uint16_t i = 0; i < 16; ++i) {
3411                 if (chn_mask & (1<<i)) {
3412                         channel = i;
3413                         chn_cnt++;
3414                 }
3415         }
3416
3417         if (chn_cnt == 16) {
3418                 channel = 0;
3419         }
3420
3421         return channel;
3422 }
3423
3424 void
3425 MidiRegionView::edit_patch_change (ArdourCanvas::CanvasPatchChange* pc)
3426 {
3427         PatchChangeDialog d (&_time_converter, trackview.session(), *pc->patch (), Gtk::Stock::APPLY);
3428         if (d.run () != Gtk::RESPONSE_ACCEPT) {
3429                 return;
3430         }
3431
3432         change_patch_change (pc->patch(), d.patch ());
3433 }