gtk2_ardour/midi_region_view.cc

   1 /*
   2     Copyright (C) 2001-2007 Paul Davis
   3     Author: Dave Robillard
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include <cmath>
  21 #include <cassert>
  22 #include <algorithm>
  23 #include <ostream>
  24
  25 #include <gtkmm.h>
  26
  27 #include <gtkmm2ext/gtk_ui.h>
  28
  29 #include <sigc++/signal.h>
  30
  31 #include "pbd/memento_command.h"
  32 #include "pbd/stateful_diff_command.h"
  33
  34 #include "ardour/playlist.h"
  35 #include "ardour/tempo.h"
  36 #include "ardour/midi_region.h"
  37 #include "ardour/midi_source.h"
  38 #include "ardour/midi_model.h"
  39 #include "ardour/midi_patch_manager.h"
  40 #include "ardour/session.h"
  41
  42 #include "evoral/Parameter.hpp"
  43 #include "evoral/MIDIParameters.hpp"
  44 #include "evoral/Control.hpp"
  45 #include "evoral/midi_util.h"
  46
  47 #include "automation_region_view.h"
  48 #include "automation_time_axis.h"
  49 #include "canvas-hit.h"
  50 #include "canvas-note.h"
  51 #include "canvas-program-change.h"
  52 #include "editor.h"
  53 #include "ghostregion.h"
  54 #include "gui_thread.h"
  55 #include "keyboard.h"
  56 #include "midi_cut_buffer.h"
  57 #include "midi_list_editor.h"
  58 #include "midi_region_view.h"
  59 #include "midi_streamview.h"
  60 #include "midi_time_axis.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
  71 #include "i18n.h"
  72
  73 using namespace ARDOUR;
  74 using namespace PBD;
  75 using namespace Editing;
  76 using namespace ArdourCanvas;
  77 using Gtkmm2ext::Keyboard;
  78
  79 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
  80                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color const & basic_color)
  81         : RegionView (parent, tv, r, spu, basic_color)
  82         , _force_channel(-1)
  83         , _last_channel_selection(0xFFFF)
  84         , _current_range_min(0)
  85         , _current_range_max(0)
  86         , _model_name(string())
  87         , _custom_device_mode(string())
  88         , _active_notes(0)
  89         , _note_group(new ArdourCanvas::Group(*parent))
  90         , _diff_command(0)
  91         , _ghost_note(0)
  92         , _drag_rect (0)
  93         , _step_edit_cursor (0)
  94         , _step_edit_cursor_width (1.0)
  95         , _step_edit_cursor_position (0.0)
  96         , _mouse_state(None)
  97         , _pressed_button(0)
  98         , _sort_needed (true)
  99         , _optimization_iterator (_events.end())
 100         , _list_editor (0)
 101         , no_sound_notes (false)
 102         , pre_enter_cursor (0)
 103 {
 104         _note_group->raise_to_top();
 105         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 106
 107         connect_to_diskstream ();
 108 }
 109
 110 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
 111                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color,
 112                 TimeAxisViewItem::Visibility visibility)
 113         : RegionView (parent, tv, r, spu, basic_color, false, visibility)
 114         , _force_channel(-1)
 115         , _last_channel_selection(0xFFFF)
 116         , _model_name(string())
 117         , _custom_device_mode(string())
 118         , _active_notes(0)
 119         , _note_group(new ArdourCanvas::Group(*parent))
 120         , _diff_command(0)
 121         , _ghost_note(0)
 122         , _drag_rect (0)
 123         , _step_edit_cursor (0)
 124         , _step_edit_cursor_width (1.0)
 125         , _step_edit_cursor_position (0.0)
 126         , _mouse_state(None)
 127         , _pressed_button(0)
 128         , _sort_needed (true)
 129         , _optimization_iterator (_events.end())
 130         , _list_editor (0)
 131         , no_sound_notes (false)
 132 {
 133         _note_group->raise_to_top();
 134         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 135
 136         connect_to_diskstream ();
 137 }
 138
 139 MidiRegionView::MidiRegionView (const MidiRegionView& other)
 140         : sigc::trackable(other)
 141         , RegionView (other)
 142         , _force_channel(-1)
 143         , _last_channel_selection(0xFFFF)
 144         , _model_name(string())
 145         , _custom_device_mode(string())
 146         , _active_notes(0)
 147         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 148         , _diff_command(0)
 149         , _ghost_note(0)
 150         , _drag_rect (0)
 151         , _step_edit_cursor (0)
 152         , _step_edit_cursor_width (1.0)
 153         , _step_edit_cursor_position (0.0)
 154         , _mouse_state(None)
 155         , _pressed_button(0)
 156         , _sort_needed (true)
 157         , _optimization_iterator (_events.end())
 158         , _list_editor (0)
 159         , no_sound_notes (false)
 160 {
 161         Gdk::Color c;
 162         int r,g,b,a;
 163
 164         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 165         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 166
 167         init (c, false);
 168 }
 169
 170 MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<MidiRegion> region)
 171         : RegionView (other, boost::shared_ptr<Region> (region))
 172         , _force_channel(-1)
 173         , _last_channel_selection(0xFFFF)
 174         , _model_name(string())
 175         , _custom_device_mode(string())
 176         , _active_notes(0)
 177         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 178         , _diff_command(0)
 179         , _ghost_note(0)
 180         , _drag_rect (0)
 181         , _step_edit_cursor (0)
 182         , _step_edit_cursor_width (1.0)
 183         , _step_edit_cursor_position (0.0)
 184         , _mouse_state(None)
 185         , _pressed_button(0)
 186         , _sort_needed (true)
 187         , _optimization_iterator (_events.end())
 188         , _list_editor (0)
 189         , no_sound_notes (false)
 190 {
 191         Gdk::Color c;
 192         int r,g,b,a;
 193
 194         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 195         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 196
 197         init (c, true);
 198 }
 199
 200 void
 201 MidiRegionView::init (Gdk::Color const & basic_color, bool wfd)
 202 {
 203         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 204
 205         CanvasNoteEvent::CanvasNoteEventDeleted.connect (note_delete_connection, MISSING_INVALIDATOR,
 206                                                          ui_bind (&MidiRegionView::maybe_remove_deleted_note_from_selection, this, _1),
 207                                                          gui_context());
 208
 209         if (wfd) {
 210                 midi_region()->midi_source(0)->load_model();
 211         }
 212
 213         _model = midi_region()->midi_source(0)->model();
 214         _enable_display = false;
 215
 216         RegionView::init (basic_color, false);
 217
 218         compute_colors (basic_color);
 219
 220         set_height (trackview.current_height());
 221
 222         region_muted ();
 223         region_sync_changed ();
 224         region_resized (ARDOUR::bounds_change);
 225         region_locked ();
 226
 227         reset_width_dependent_items (_pixel_width);
 228
 229         set_colors ();
 230
 231         _enable_display = true;
 232         if (_model) {
 233                 if (wfd) {
 234                         display_model (_model);
 235                 }
 236         }
 237
 238         group->raise_to_top();
 239         group->signal_event().connect (sigc::mem_fun (this, &MidiRegionView::canvas_event), false);
 240
 241         midi_view()->signal_channel_mode_changed().connect(
 242                         sigc::mem_fun(this, &MidiRegionView::midi_channel_mode_changed));
 243
 244         midi_view()->signal_midi_patch_settings_changed().connect(
 245                         sigc::mem_fun(this, &MidiRegionView::midi_patch_settings_changed));
 246
 247         trackview.editor().SnapChanged.connect (snap_changed_connection, invalidator (*this), ui_bind (&MidiRegionView::snap_changed, this), gui_context ());
 248
 249         connect_to_diskstream ();
 250 }
 251
 252 void
 253 MidiRegionView::connect_to_diskstream ()
 254 {
 255         midi_view()->midi_track()->DataRecorded.connect (*this, invalidator (*this), ui_bind (&MidiRegionView::data_recorded, this, _1, _2), gui_context ());
 256 }
 257
 258 bool
 259 MidiRegionView::canvas_event(GdkEvent* ev)
 260 {
 261         if (!trackview.editor().internal_editing()) {
 262                 return false;
 263         }
 264
 265         /* XXX: note that until version 2.30, the GnomeCanvas did not propagate scroll events
 266            to its items, which means that ev->type == GDK_SCROLL will never be seen
 267         */
 268
 269         switch (ev->type) {
 270         case GDK_SCROLL:
 271                 return scroll (&ev->scroll);
 272
 273         case GDK_KEY_PRESS:
 274                 return key_press (&ev->key);
 275
 276         case GDK_KEY_RELEASE:
 277                 return key_release (&ev->key);
 278
 279         case GDK_BUTTON_PRESS:
 280                 return button_press (&ev->button);
 281
 282         case GDK_2BUTTON_PRESS:
 283                 return true;
 284
 285         case GDK_BUTTON_RELEASE:
 286                 return button_release (&ev->button);
 287
 288         case GDK_ENTER_NOTIFY:
 289                 return enter_notify (&ev->crossing);
 290
 291         case GDK_LEAVE_NOTIFY:
 292                 return leave_notify (&ev->crossing);
 293
 294         case GDK_MOTION_NOTIFY:
 295                 return motion (&ev->motion);
 296
 297         default:
 298                 break;
 299         }
 300
 301         return false;
 302 }
 303
 304 bool
 305 MidiRegionView::enter_notify (GdkEventCrossing* ev)
 306 {
 307         /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 308
 309         Keyboard::magic_widget_grab_focus();
 310         group->grab_focus();
 311
 312         if (trackview.editor().current_mouse_mode() == MouseRange) {
 313                 create_ghost_note (ev->x, ev->y);
 314         }
 315
 316         return false;
 317 }
 318
 319 bool
 320 MidiRegionView::leave_notify (GdkEventCrossing* ev)
 321 {
 322         trackview.editor().hide_verbose_canvas_cursor ();
 323         delete _ghost_note;
 324         _ghost_note = 0;
 325         return false;
 326 }
 327
 328 bool
 329 MidiRegionView::button_press (GdkEventButton* ev)
 330 {
 331         _last_x = ev->x;
 332         _last_y = ev->y;
 333         group->w2i (_last_x, _last_y);
 334
 335         if (_mouse_state != SelectTouchDragging && ev->button == 1) {
 336                 _pressed_button = ev->button;
 337                 _mouse_state = Pressed;
 338                 return true;
 339         }
 340
 341         _pressed_button = ev->button;
 342
 343         return true;
 344 }
 345
 346 bool
 347 MidiRegionView::button_release (GdkEventButton* ev)
 348 {
 349         double event_x, event_y;
 350         framepos_t event_frame = 0;
 351
 352         event_x = ev->x;
 353         event_y = ev->y;
 354         group->w2i(event_x, event_y);
 355         group->ungrab(ev->time);
 356         event_frame = trackview.editor().pixel_to_frame(event_x);
 357
 358         if (ev->button == 3) {
 359                 return false;
 360         } else if (_pressed_button != 1) {
 361                 return false;
 362         }
 363
 364         switch (_mouse_state) {
 365         case Pressed: // Clicked
 366                 switch (trackview.editor().current_mouse_mode()) {
 367                 case MouseObject:
 368                 case MouseTimeFX:
 369                         clear_selection();
 370                         maybe_select_by_position (ev, event_x, event_y);
 371                         break;
 372
 373                 case MouseRange:
 374                 {
 375                         bool success;
 376                         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, trackview.editor().pixel_to_frame (event_x));
 377                         if (!success) {
 378                                 beats = 1;
 379                         }
 380                         create_note_at (event_x, event_y, beats, true);
 381                         break;
 382                 }
 383                 default:
 384                         break;
 385                 }
 386                 _mouse_state = None;
 387                 break;
 388         case SelectRectDragging: // Select drag done
 389                 _mouse_state = None;
 390                 delete _drag_rect;
 391                 _drag_rect = 0;
 392                 break;
 393
 394         case AddDragging: // Add drag done
 395                 _mouse_state = None;
 396                 if (_drag_rect->property_x2() > _drag_rect->property_x1() + 2) {
 397                         const double x      = _drag_rect->property_x1();
 398                         const double length = trackview.editor().pixel_to_frame
 399                                 (_drag_rect->property_x2() - _drag_rect->property_x1());
 400
 401                         create_note_at (x, _drag_rect->property_y1(), frames_to_beats(length), false);
 402                 }
 403
 404                 delete _drag_rect;
 405                 _drag_rect = 0;
 406
 407                 create_ghost_note (ev->x, ev->y);
 408
 409         default:
 410                 break;
 411         }
 412
 413         return false;
 414 }
 415
 416 bool
 417 MidiRegionView::motion (GdkEventMotion* ev)
 418 {
 419         double event_x, event_y;
 420         framepos_t event_frame = 0;
 421
 422         event_x = ev->x;
 423         event_y = ev->y;
 424         group->w2i(event_x, event_y);
 425
 426         // convert event_x to global frame
 427         event_frame = trackview.editor().pixel_to_frame(event_x) + _region->position();
 428         trackview.editor().snap_to(event_frame);
 429         // convert event_frame back to local coordinates relative to position
 430         event_frame -= _region->position();
 431
 432         if (_ghost_note) {
 433                 update_ghost_note (ev->x, ev->y);
 434         }
 435
 436         /* any motion immediately hides velocity text that may have been visible */
 437
 438         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 439                 (*i)->hide_velocity ();
 440         }
 441
 442         switch (_mouse_state) {
 443         case Pressed: // Maybe start a drag, if we've moved a bit
 444
 445                 if (fabs (event_x - _last_x) < 1 && fabs (event_y - _last_y) < 1) {
 446                         /* no appreciable movement since the button was pressed */
 447                         return false;
 448                 }
 449
 450                 // Select drag start
 451                 if (_pressed_button == 1 && trackview.editor().current_mouse_mode() == MouseObject) {
 452                         group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 453                                     Gdk::Cursor(Gdk::FLEUR), ev->time);
 454                         _last_x = event_x;
 455                         _last_y = event_y;
 456                         _drag_start_x = event_x;
 457                         _drag_start_y = event_y;
 458
 459                         _drag_rect = new ArdourCanvas::SimpleRect(*group);
 460                         _drag_rect->property_x1() = event_x;
 461                         _drag_rect->property_y1() = event_y;
 462                         _drag_rect->property_x2() = event_x;
 463                         _drag_rect->property_y2() = event_y;
 464                         _drag_rect->property_outline_what() = 0xFF;
 465                         _drag_rect->property_outline_color_rgba()
 466                                 = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 467                         _drag_rect->property_fill_color_rgba()
 468                                 = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 469
 470                         _mouse_state = SelectRectDragging;
 471                         return true;
 472
 473                         // Add note drag start
 474                 } else if (trackview.editor().internal_editing()) {
 475
 476                         delete _ghost_note;
 477                         _ghost_note = 0;
 478
 479                         group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 480                                     Gdk::Cursor(Gdk::FLEUR), ev->time);
 481                         _last_x = event_x;
 482                         _last_y = event_y;
 483                         _drag_start_x = event_x;
 484                         _drag_start_y = event_y;
 485
 486                         _drag_rect = new ArdourCanvas::SimpleRect(*group);
 487                         _drag_rect->property_x1() = trackview.editor().frame_to_pixel(event_frame);
 488
 489                         _drag_rect->property_y1() = midi_stream_view()->note_to_y(
 490                                 midi_stream_view()->y_to_note(event_y));
 491                         _drag_rect->property_x2() = trackview.editor().frame_to_pixel(event_frame);
 492                         _drag_rect->property_y2() = _drag_rect->property_y1()
 493                                 + floor(midi_stream_view()->note_height());
 494                         _drag_rect->property_outline_what() = 0xFF;
 495                         _drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 496                         _drag_rect->property_fill_color_rgba()    = 0xFFFFFF66;
 497
 498                         _mouse_state = AddDragging;
 499                         return true;
 500                 }
 501
 502                 return false;
 503
 504         case SelectRectDragging: // Select drag motion
 505         case AddDragging: // Add note drag motion
 506                 if (ev->is_hint) {
 507                         int t_x;
 508                         int t_y;
 509                         GdkModifierType state;
 510                         gdk_window_get_pointer(ev->window, &t_x, &t_y, &state);
 511                         event_x = t_x;
 512                         event_y = t_y;
 513                 }
 514
 515                 if (_mouse_state == AddDragging)
 516                         event_x = trackview.editor().frame_to_pixel(event_frame);
 517
 518                 if (_drag_rect) {
 519                         if (event_x > _drag_start_x)
 520                                 _drag_rect->property_x2() = event_x;
 521                         else
 522                                 _drag_rect->property_x1() = event_x;
 523                 }
 524
 525                 if (_drag_rect && _mouse_state == SelectRectDragging) {
 526                         if (event_y > _drag_start_y)
 527                                 _drag_rect->property_y2() = event_y;
 528                         else
 529                                 _drag_rect->property_y1() = event_y;
 530
 531                         update_drag_selection(_drag_start_x, event_x, _drag_start_y, event_y);
 532                 }
 533
 534                 _last_x = event_x;
 535                 _last_y = event_y;
 536
 537         case SelectTouchDragging:
 538                 return false;
 539
 540         default:
 541                 break;
 542         }
 543
 544         return false;
 545 }
 546
 547
 548 bool
 549 MidiRegionView::scroll (GdkEventScroll* ev)
 550 {
 551         if (_selection.empty()) {
 552                 return false;
 553         }
 554
 555         trackview.editor().hide_verbose_canvas_cursor ();
 556
 557         bool fine = !Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier);
 558
 559         if (ev->direction == GDK_SCROLL_UP) {
 560                 change_velocities (true, fine, false);
 561         } else if (ev->direction == GDK_SCROLL_DOWN) {
 562                 change_velocities (false, fine, false);
 563         }
 564         return true;
 565 }
 566
 567 bool
 568 MidiRegionView::key_press (GdkEventKey* ev)
 569 {
 570         /* since GTK bindings are generally activated on press, and since
 571            detectable auto-repeat is the name of the game and only sends
 572            repeated presses, carry out key actions at key press, not release.
 573         */
 574
 575         if (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R){
 576                 _mouse_state = SelectTouchDragging;
 577                 return true;
 578
 579         } else if (ev->keyval == GDK_Escape) {
 580                 clear_selection();
 581                 _mouse_state = None;
 582
 583         } else if (ev->keyval == GDK_comma || ev->keyval == GDK_period) {
 584
 585                 bool start = (ev->keyval == GDK_comma);
 586                 bool end = (ev->keyval == GDK_period);
 587                 bool shorter = Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier);
 588                 bool fine = Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 589
 590                 change_note_lengths (fine, shorter, 0.0, start, end);
 591
 592                 return true;
 593
 594         } else if (ev->keyval == GDK_Delete) {
 595
 596                 delete_selection();
 597                 return true;
 598
 599         } else if (ev->keyval == GDK_Tab) {
 600
 601                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 602                         goto_previous_note ();
 603                 } else {
 604                         goto_next_note ();
 605                 }
 606                 return true;
 607
 608         } else if (ev->keyval == GDK_Up) {
 609
 610                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 611                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 612
 613                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 614                         change_velocities (true, fine, allow_smush);
 615                 } else {
 616                         transpose (true, fine, allow_smush);
 617                 }
 618                 return true;
 619
 620         } else if (ev->keyval == GDK_Down) {
 621
 622                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 623                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 624
 625                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 626                         change_velocities (false, fine, allow_smush);
 627                 } else {
 628                         transpose (false, fine, allow_smush);
 629                 }
 630                 return true;
 631
 632         } else if (ev->keyval == GDK_Left) {
 633
 634                 nudge_notes (false);
 635                 return true;
 636
 637         } else if (ev->keyval == GDK_Right) {
 638
 639                 nudge_notes (true);
 640                 return true;
 641
 642         } else if (ev->keyval == GDK_Control_L) {
 643                 return true;
 644
 645         }
 646
 647         return false;
 648 }
 649
 650 bool
 651 MidiRegionView::key_release (GdkEventKey* ev)
 652 {
 653         if (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R) {
 654                 _mouse_state = None;
 655                 return true;
 656         }
 657         return false;
 658 }
 659
 660 void
 661 MidiRegionView::show_list_editor ()
 662 {
 663         if (!_list_editor) {
 664                 _list_editor = new MidiListEditor (trackview.session(), midi_region());
 665         }
 666         _list_editor->present ();
 667 }
 668
 669 /** Add a note to the model, and the view, at a canvas (click) coordinate.
 670  * \param x horizontal position in pixels
 671  * \param y vertical position in pixels
 672  * \param length duration of the note in beats, which will be snapped to the grid
 673  * \param sh true to make the note 1 frame shorter than the snapped version of \a length.
 674  */
 675 void
 676 MidiRegionView::create_note_at(double x, double y, double length, bool sh)
 677 {
 678         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 679         MidiStreamView* const view = mtv->midi_view();
 680
 681         double note = midi_stream_view()->y_to_note(y);
 682
 683         assert(note >= 0.0);
 684         assert(note <= 127.0);
 685
 686         // Start of note in frames relative to region start
 687         framepos_t const start_frames = snap_frame_to_frame(trackview.editor().pixel_to_frame(x));
 688         assert(start_frames >= 0);
 689
 690         // Snap length
 691         length = frames_to_beats(
 692                         snap_frame_to_frame(start_frames + beats_to_frames(length)) - start_frames);
 693
 694         assert (length != 0);
 695
 696         if (sh) {
 697                 length = frames_to_beats (beats_to_frames (length) - 1);
 698         }
 699
 700         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
 701         int chn_cnt = 0;
 702         uint8_t channel = 0;
 703
 704         /* pick the highest selected channel, unless all channels are selected,
 705            which is interpreted to mean channel 1 (zero)
 706         */
 707
 708         for (uint16_t i = 0; i < 16; ++i) {
 709                 if (chn_mask & (1<<i)) {
 710                         channel = i;
 711                         chn_cnt++;
 712                 }
 713         }
 714
 715         if (chn_cnt == 16) {
 716                 channel = 0;
 717         }
 718
 719         const boost::shared_ptr<NoteType> new_note (new NoteType (channel,
 720                                                                   frames_to_beats(start_frames + _region->start()), length,
 721                                                                   (uint8_t)note, 0x40));
 722
 723         if (_model->contains (new_note)) {
 724                 return;
 725         }
 726
 727         view->update_note_range(new_note->note());
 728
 729         MidiModel::DiffCommand* cmd = _model->new_diff_command("add note");
 730         cmd->add(new_note);
 731         _model->apply_command(*trackview.session(), cmd);
 732
 733         play_midi_note (new_note);
 734 }
 735
 736 void
 737 MidiRegionView::clear_events()
 738 {
 739         clear_selection();
 740
 741         MidiGhostRegion* gr;
 742         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 743                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 744                         gr->clear_events();
 745                 }
 746         }
 747
 748         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 749                 delete *i;
 750         }
 751
 752         _events.clear();
 753         _pgm_changes.clear();
 754         _sys_exes.clear();
 755         _optimization_iterator = _events.end();
 756 }
 757
 758 void
 759 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 760 {
 761         _model = model;
 762
 763         content_connection.disconnect ();
 764         _model->ContentsChanged.connect (content_connection, invalidator (*this), boost::bind (&MidiRegionView::redisplay_model, this), gui_context());
 765
 766         clear_events ();
 767
 768         if (_enable_display) {
 769                 redisplay_model();
 770         }
 771 }
 772
 773 void
 774 MidiRegionView::start_diff_command(string name)
 775 {
 776         if (!_diff_command) {
 777                 _diff_command = _model->new_diff_command(name);
 778         }
 779 }
 780
 781 void
 782 MidiRegionView::diff_add_note(const boost::shared_ptr<NoteType> note, bool selected, bool show_velocity)
 783 {
 784         if (_diff_command) {
 785                 _diff_command->add(note);
 786         }
 787         if (selected) {
 788                 _marked_for_selection.insert(note);
 789         }
 790         if (show_velocity) {
 791                 _marked_for_velocity.insert(note);
 792         }
 793 }
 794
 795 void
 796 MidiRegionView::diff_remove_note(ArdourCanvas::CanvasNoteEvent* ev)
 797 {
 798         if (_diff_command && ev->note()) {
 799                 _diff_command->remove(ev->note());
 800         }
 801 }
 802
 803 void
 804 MidiRegionView::diff_add_change (ArdourCanvas::CanvasNoteEvent* ev,
 805                                  MidiModel::DiffCommand::Property property,
 806                                  uint8_t val)
 807 {
 808         if (_diff_command) {
 809                 _diff_command->change (ev->note(), property, val);
 810         }
 811 }
 812
 813 void
 814 MidiRegionView::diff_add_change (ArdourCanvas::CanvasNoteEvent* ev,
 815                                  MidiModel::DiffCommand::Property property,
 816                                  Evoral::MusicalTime val)
 817 {
 818         if (_diff_command) {
 819                 _diff_command->change (ev->note(), property, val);
 820         }
 821 }
 822
 823 void
 824 MidiRegionView::apply_diff ()
 825 {
 826         bool add_or_remove;
 827
 828         if (!_diff_command) {
 829                 return;
 830         }
 831
 832         if ((add_or_remove = _diff_command->adds_or_removes())) {
 833                 // Mark all selected notes for selection when model reloads
 834                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 835                         _marked_for_selection.insert((*i)->note());
 836                 }
 837         }
 838
 839         _model->apply_command(*trackview.session(), _diff_command);
 840         _diff_command = 0;
 841         midi_view()->midi_track()->playlist_modified();
 842
 843         if (add_or_remove) {
 844                 _marked_for_selection.clear();
 845         }
 846
 847         _marked_for_velocity.clear();
 848 }
 849
 850 void
 851 MidiRegionView::apply_diff_as_subcommand()
 852 {
 853         bool add_or_remove;
 854
 855         if (!_diff_command) {
 856                 return;
 857         }
 858
 859         if ((add_or_remove = _diff_command->adds_or_removes())) {
 860                 // Mark all selected notes for selection when model reloads
 861                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 862                         _marked_for_selection.insert((*i)->note());
 863                 }
 864         }
 865
 866         _model->apply_command_as_subcommand(*trackview.session(), _diff_command);
 867         _diff_command = 0;
 868         midi_view()->midi_track()->playlist_modified();
 869
 870         if (add_or_remove) {
 871                 _marked_for_selection.clear();
 872         }
 873         _marked_for_velocity.clear();
 874 }
 875
 876
 877 void
 878 MidiRegionView::abort_command()
 879 {
 880         delete _diff_command;
 881         _diff_command = 0;
 882         clear_selection();
 883 }
 884
 885 CanvasNoteEvent*
 886 MidiRegionView::find_canvas_note (boost::shared_ptr<NoteType> note)
 887 {
 888         if (_optimization_iterator != _events.end()) {
 889                 ++_optimization_iterator;
 890         }
 891
 892         if (_optimization_iterator != _events.end() && (*_optimization_iterator)->note() == note) {
 893                 return *_optimization_iterator;
 894         }
 895
 896         for (_optimization_iterator = _events.begin(); _optimization_iterator != _events.end(); ++_optimization_iterator) {
 897                 if ((*_optimization_iterator)->note() == note) {
 898                         return *_optimization_iterator;
 899                 }
 900         }
 901
 902         return 0;
 903 }
 904
 905 void
 906 MidiRegionView::get_events (Events& e, Evoral::Sequence<Evoral::MusicalTime>::NoteOperator op, uint8_t val, int chan_mask)
 907 {
 908         MidiModel::Notes notes;
 909         _model->get_notes (notes, op, val, chan_mask);
 910
 911         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
 912                 CanvasNoteEvent* cne = find_canvas_note (*n);
 913                 if (cne) {
 914                         e.push_back (cne);
 915                 }
 916         }
 917 }
 918
 919 void
 920 MidiRegionView::redisplay_model()
 921 {
 922         // Don't redisplay the model if we're currently recording and displaying that
 923         if (_active_notes) {
 924                 return;
 925         }
 926
 927         if (!_model) {
 928                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
 929                 return;
 930         }
 931
 932         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 933                 (*i)->invalidate ();
 934         }
 935
 936         MidiModel::ReadLock lock(_model->read_lock());
 937
 938         MidiModel::Notes& notes (_model->notes());
 939         _optimization_iterator = _events.begin();
 940
 941         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
 942
 943                 boost::shared_ptr<NoteType> note (*n);
 944                 CanvasNoteEvent* cne;
 945                 bool visible;
 946
 947                 if (note_in_region_range (note, visible)) {
 948
 949                         if ((cne = find_canvas_note (note)) != 0) {
 950
 951                                 cne->validate ();
 952
 953                                 CanvasNote* cn;
 954                                 CanvasHit* ch;
 955
 956                                 if ((cn = dynamic_cast<CanvasNote*>(cne)) != 0) {
 957                                         update_note (cn);
 958                                 } else if ((ch = dynamic_cast<CanvasHit*>(cne)) != 0) {
 959                                         update_hit (ch);
 960                                 }
 961
 962                                 if (visible) {
 963                                         cne->show ();
 964                                 } else {
 965                                         cne->hide ();
 966                                 }
 967
 968                         } else {
 969
 970                                 add_note (note, visible);
 971                         }
 972
 973                 } else {
 974
 975                         if ((cne = find_canvas_note (note)) != 0) {
 976                                 cne->validate ();
 977                                 cne->hide ();
 978                         }
 979                 }
 980         }
 981
 982
 983         /* remove note items that are no longer valid */
 984
 985         for (Events::iterator i = _events.begin(); i != _events.end(); ) {
 986                 if (!(*i)->valid ()) {
 987                         delete *i;
 988                         i = _events.erase (i);
 989                 } else {
 990                         ++i;
 991                 }
 992         }
 993
 994         _pgm_changes.clear();
 995         _sys_exes.clear();
 996
 997         display_sysexes();
 998         display_program_changes();
 999
1000         _marked_for_selection.clear ();
1001         _marked_for_velocity.clear ();
1002
1003         /* we may have caused _events to contain things out of order (e.g. if a note
1004            moved earlier or later). we don't generally need them in time order, but
1005            make a note that a sort is required for those cases that require it.
1006         */
1007
1008         _sort_needed = true;
1009 }
1010
1011 void
1012 MidiRegionView::display_program_changes()
1013 {
1014         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
1015         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
1016
1017         for (uint8_t i = 0; i < 16; ++i) {
1018                 if (chn_mask & (1<<i)) {
1019                         display_program_changes_on_channel (i);
1020                 }
1021         }
1022 }
1023
1024 void
1025 MidiRegionView::display_program_changes_on_channel(uint8_t channel)
1026 {
1027         boost::shared_ptr<Evoral::Control> control =
1028                 _model->control(Evoral::MIDI::ProgramChange (MidiPgmChangeAutomation, channel));
1029
1030         if (!control) {
1031                 return;
1032         }
1033
1034         Glib::Mutex::Lock lock (control->list()->lock());
1035
1036         for (AutomationList::const_iterator event = control->list()->begin();
1037                         event != control->list()->end(); ++event) {
1038                 double event_time     = (*event)->when;
1039                 double program_number = floor((*event)->value + 0.5);
1040
1041                 // Get current value of bank select MSB at time of the program change
1042                 Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1043                 boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1044                 uint8_t msb = 0;
1045                 if (msb_control != 0) {
1046                         msb = uint8_t(floor(msb_control->get_double(true, event_time) + 0.5));
1047                 }
1048
1049                 // Get current value of bank select LSB at time of the program change
1050                 Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1051                 boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1052                 uint8_t lsb = 0;
1053                 if (lsb_control != 0) {
1054                         lsb = uint8_t(floor(lsb_control->get_double(true, event_time) + 0.5));
1055                 }
1056
1057                 MIDI::Name::PatchPrimaryKey patch_key(msb, lsb, program_number);
1058
1059                 boost::shared_ptr<MIDI::Name::Patch> patch =
1060                         MIDI::Name::MidiPatchManager::instance().find_patch(
1061                                         _model_name, _custom_device_mode, channel, patch_key);
1062
1063                 PCEvent program_change(event_time, uint8_t(program_number), channel);
1064
1065                 if (patch != 0) {
1066                         add_pgm_change(program_change, patch->name());
1067                 } else {
1068                         char buf[4];
1069                         // program_number is zero-based: convert to one-based
1070                         snprintf(buf, 4, "%d", int(program_number+1));
1071                         add_pgm_change(program_change, buf);
1072                 }
1073         }
1074 }
1075
1076 void
1077 MidiRegionView::display_sysexes()
1078 {
1079         for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
1080                 Evoral::MusicalTime time = (*i)->time();
1081                 assert(time >= 0);
1082
1083                 ostringstream str;
1084                 str << hex;
1085                 for (uint32_t b = 0; b < (*i)->size(); ++b) {
1086                         str << int((*i)->buffer()[b]);
1087                         if (b != (*i)->size() -1) {
1088                                 str << " ";
1089                         }
1090                 }
1091                 string text = str.str();
1092
1093                 ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1094
1095                 const double x = trackview.editor().frame_to_pixel(beats_to_frames(time));
1096
1097                 double height = midi_stream_view()->contents_height();
1098
1099                 boost::shared_ptr<CanvasSysEx> sysex = boost::shared_ptr<CanvasSysEx>(
1100                                 new CanvasSysEx(*this, *group, text, height, x, 1.0));
1101
1102                 // Show unless program change is beyond the region bounds
1103                 if (time - _region->start() >= _region->length() || time < _region->start()) {
1104                         sysex->hide();
1105                 } else {
1106                         sysex->show();
1107                 }
1108
1109                 _sys_exes.push_back(sysex);
1110         }
1111 }
1112
1113
1114 MidiRegionView::~MidiRegionView ()
1115 {
1116         in_destructor = true;
1117
1118         trackview.editor().hide_verbose_canvas_cursor ();
1119
1120         note_delete_connection.disconnect ();
1121
1122         delete _list_editor;
1123
1124         RegionViewGoingAway (this); /* EMIT_SIGNAL */
1125
1126         if (_active_notes) {
1127                 end_write();
1128         }
1129
1130         _selection.clear();
1131         clear_events();
1132
1133         delete _note_group;
1134         delete _diff_command;
1135         delete _step_edit_cursor;
1136 }
1137
1138 void
1139 MidiRegionView::region_resized (const PropertyChange& what_changed)
1140 {
1141         RegionView::region_resized(what_changed);
1142
1143         if (what_changed.contains (ARDOUR::Properties::position)) {
1144                 set_duration(_region->length(), 0);
1145                 if (_enable_display) {
1146                         redisplay_model();
1147                 }
1148         }
1149 }
1150
1151 void
1152 MidiRegionView::reset_width_dependent_items (double pixel_width)
1153 {
1154         RegionView::reset_width_dependent_items(pixel_width);
1155         assert(_pixel_width == pixel_width);
1156
1157         if (_enable_display) {
1158                 redisplay_model();
1159         }
1160
1161         move_step_edit_cursor (_step_edit_cursor_position);
1162         set_step_edit_cursor_width (_step_edit_cursor_width);
1163 }
1164
1165 void
1166 MidiRegionView::set_height (double height)
1167 {
1168         static const double FUDGE = 2.0;
1169         const double old_height = _height;
1170         RegionView::set_height(height);
1171         _height = height - FUDGE;
1172
1173         apply_note_range(midi_stream_view()->lowest_note(),
1174                          midi_stream_view()->highest_note(),
1175                          height != old_height + FUDGE);
1176
1177         if (name_pixbuf) {
1178                 name_pixbuf->raise_to_top();
1179         }
1180
1181         for (PgmChanges::iterator x = _pgm_changes.begin(); x != _pgm_changes.end(); ++x) {
1182                 (*x)->set_height (midi_stream_view()->contents_height());
1183         }
1184
1185         if (_step_edit_cursor) {
1186                 _step_edit_cursor->property_y2() = midi_stream_view()->contents_height();
1187         }
1188 }
1189
1190
1191 /** Apply the current note range from the stream view
1192  * by repositioning/hiding notes as necessary
1193  */
1194 void
1195 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
1196 {
1197         if (!_enable_display) {
1198                 return;
1199         }
1200
1201         if (!force && _current_range_min == min && _current_range_max == max) {
1202                 return;
1203         }
1204
1205         _current_range_min = min;
1206         _current_range_max = max;
1207
1208         for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
1209                 CanvasNoteEvent* event = *i;
1210                 boost::shared_ptr<NoteType> note (event->note());
1211
1212                 if (note->note() < _current_range_min ||
1213                     note->note() > _current_range_max) {
1214                         event->hide();
1215                 } else {
1216                         event->show();
1217                 }
1218
1219                 if (CanvasNote* cnote = dynamic_cast<CanvasNote*>(event)) {
1220
1221                         const double y1 = midi_stream_view()->note_to_y(note->note());
1222                         const double y2 = y1 + floor(midi_stream_view()->note_height());
1223
1224                         cnote->property_y1() = y1;
1225                         cnote->property_y2() = y2;
1226
1227                 } else if (CanvasHit* chit = dynamic_cast<CanvasHit*>(event)) {
1228
1229                         double x = trackview.editor().frame_to_pixel(
1230                                 beats_to_frames(note->time()) - _region->start());
1231                         const double diamond_size = midi_stream_view()->note_height() / 2.0;
1232                         double y = midi_stream_view()->note_to_y(event->note()->note())
1233                                 + ((diamond_size-2.0) / 4.0);
1234
1235                         chit->set_height (diamond_size);
1236                         chit->move (x - chit->x1(), y - chit->y1());
1237                         chit->show ();
1238                 }
1239         }
1240 }
1241
1242 GhostRegion*
1243 MidiRegionView::add_ghost (TimeAxisView& tv)
1244 {
1245         CanvasNote* note;
1246
1247         double unit_position = _region->position () / samples_per_unit;
1248         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
1249         MidiGhostRegion* ghost;
1250
1251         if (mtv && mtv->midi_view()) {
1252                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group
1253                    to allow having midi notes on top of note lines and waveforms.
1254                  */
1255                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
1256         } else {
1257                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
1258         }
1259
1260         ghost->set_height ();
1261         ghost->set_duration (_region->length() / samples_per_unit);
1262         ghosts.push_back (ghost);
1263
1264         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1265                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
1266                         ghost->add_note(note);
1267                 }
1268         }
1269
1270         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&RegionView::remove_ghost, this, _1), gui_context());
1271
1272         return ghost;
1273 }
1274
1275
1276 /** Begin tracking note state for successive calls to add_event
1277  */
1278 void
1279 MidiRegionView::begin_write()
1280 {
1281         assert(!_active_notes);
1282         _active_notes = new CanvasNote*[128];
1283         for (unsigned i=0; i < 128; ++i) {
1284                 _active_notes[i] = 0;
1285         }
1286 }
1287
1288
1289 /** Destroy note state for add_event
1290  */
1291 void
1292 MidiRegionView::end_write()
1293 {
1294         delete[] _active_notes;
1295         _active_notes = 0;
1296         _marked_for_selection.clear();
1297         _marked_for_velocity.clear();
1298 }
1299
1300
1301 /** Resolve an active MIDI note (while recording).
1302  */
1303 void
1304 MidiRegionView::resolve_note(uint8_t note, double end_time)
1305 {
1306         if (midi_view()->note_mode() != Sustained) {
1307                 return;
1308         }
1309
1310         if (_active_notes && _active_notes[note]) {
1311                 const framepos_t end_time_frames = beats_to_frames(end_time) - _region->start();
1312                 _active_notes[note]->property_x2() = trackview.editor().frame_to_pixel(end_time_frames);
1313                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
1314                 _active_notes[note] = 0;
1315         }
1316 }
1317
1318
1319 /** Extend active notes to rightmost edge of region (if length is changed)
1320  */
1321 void
1322 MidiRegionView::extend_active_notes()
1323 {
1324         if (!_active_notes) {
1325                 return;
1326         }
1327
1328         for (unsigned i=0; i < 128; ++i) {
1329                 if (_active_notes[i]) {
1330                         _active_notes[i]->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1331                 }
1332         }
1333 }
1334
1335
1336 void
1337 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
1338 {
1339         if (no_sound_notes || !trackview.editor().sound_notes()) {
1340                 return;
1341         }
1342
1343         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1344
1345         if (!route_ui || !route_ui->midi_track()) {
1346                 return;
1347         }
1348
1349         NotePlayer* np = new NotePlayer (route_ui->midi_track());
1350         np->add (note);
1351         np->play ();
1352 }
1353
1354 void
1355 MidiRegionView::play_midi_chord (vector<boost::shared_ptr<NoteType> > notes)
1356 {
1357         if (no_sound_notes || !trackview.editor().sound_notes()) {
1358                 return;
1359         }
1360
1361         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1362
1363         if (!route_ui || !route_ui->midi_track()) {
1364                 return;
1365         }
1366
1367         NotePlayer* np = new NotePlayer (route_ui->midi_track());
1368
1369         for (vector<boost::shared_ptr<NoteType> >::iterator n = notes.begin(); n != notes.end(); ++n) {
1370                 np->add (*n);
1371         }
1372
1373         np->play ();
1374 }
1375
1376
1377 bool
1378 MidiRegionView::note_in_region_range(const boost::shared_ptr<NoteType> note, bool& visible) const
1379 {
1380         const framepos_t note_start_frames = beats_to_frames(note->time());
1381
1382         bool outside = (note_start_frames - _region->start() >= _region->length()) ||
1383                 (note_start_frames < _region->start());
1384
1385         visible = (note->note() >= midi_stream_view()->lowest_note()) &&
1386                 (note->note() <= midi_stream_view()->highest_note());
1387
1388         return !outside;
1389 }
1390
1391 void
1392 MidiRegionView::update_note (CanvasNote* ev)
1393 {
1394         boost::shared_ptr<NoteType> note = ev->note();
1395
1396         const framepos_t note_start_frames = beats_to_frames(note->time());
1397
1398         /* trim note display to not overlap the end of its region */
1399         const framepos_t note_end_frames = min (beats_to_frames (note->end_time()), _region->start() + _region->length());
1400
1401         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1402         const double y1 = midi_stream_view()->note_to_y(note->note());
1403         const double note_endpixel = trackview.editor().frame_to_pixel(note_end_frames - _region->start());
1404
1405         ev->property_x1() = x;
1406         ev->property_y1() = y1;
1407         if (note->length() > 0) {
1408                 ev->property_x2() = note_endpixel;
1409         } else {
1410                 ev->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1411         }
1412         ev->property_y2() = y1 + floor(midi_stream_view()->note_height());
1413
1414         if (note->length() == 0) {
1415                 if (_active_notes) {
1416                         assert(note->note() < 128);
1417                         // If this note is already active there's a stuck note,
1418                         // finish the old note rectangle
1419                         if (_active_notes[note->note()]) {
1420                                 CanvasNote* const old_rect = _active_notes[note->note()];
1421                                 boost::shared_ptr<NoteType> old_note = old_rect->note();
1422                                 old_rect->property_x2() = x;
1423                                 old_rect->property_outline_what() = (guint32) 0xF;
1424                         }
1425                         _active_notes[note->note()] = ev;
1426                 }
1427                 /* outline all but right edge */
1428                 ev->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
1429         } else {
1430                 /* outline all edges */
1431                 ev->property_outline_what() = (guint32) 0xF;
1432         }
1433 }
1434
1435 void
1436 MidiRegionView::update_hit (CanvasHit* ev)
1437 {
1438         boost::shared_ptr<NoteType> note = ev->note();
1439
1440         const framepos_t note_start_frames = beats_to_frames(note->time());
1441         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1442         const double diamond_size = midi_stream_view()->note_height() / 2.0;
1443         const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
1444
1445         ev->move_to (x, y);
1446 }
1447
1448 /** Add a MIDI note to the view (with length).
1449  *
1450  * If in sustained mode, notes with length 0 will be considered active
1451  * notes, and resolve_note should be called when the corresponding note off
1452  * event arrives, to properly display the note.
1453  */
1454 void
1455 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note, bool visible)
1456 {
1457         CanvasNoteEvent* event = 0;
1458
1459         assert(note->time() >= 0);
1460         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
1461
1462         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1463
1464         if (midi_view()->note_mode() == Sustained) {
1465
1466                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
1467
1468                 update_note (ev_rect);
1469
1470                 event = ev_rect;
1471
1472                 MidiGhostRegion* gr;
1473
1474                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
1475                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
1476                                 gr->add_note(ev_rect);
1477                         }
1478                 }
1479
1480         } else if (midi_view()->note_mode() == Percussive) {
1481
1482                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
1483
1484                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
1485
1486                 update_hit (ev_diamond);
1487
1488                 event = ev_diamond;
1489
1490         } else {
1491                 event = 0;
1492         }
1493
1494         if (event) {
1495                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
1496                         note_selected(event, true);
1497                 }
1498
1499                 if (_marked_for_velocity.find(note) != _marked_for_velocity.end()) {
1500                         event->show_velocity();
1501                 }
1502                 event->on_channel_selection_change(_last_channel_selection);
1503                 _events.push_back(event);
1504
1505                 if (visible) {
1506                         event->show();
1507                 } else {
1508                         event->hide ();
1509                 }
1510         }
1511 }
1512
1513 void
1514 MidiRegionView::step_add_note (uint8_t channel, uint8_t number, uint8_t velocity,
1515                                Evoral::MusicalTime pos, Evoral::MusicalTime len)
1516 {
1517         boost::shared_ptr<NoteType> new_note (new NoteType (channel, pos, len, number, velocity));
1518
1519         /* potentially extend region to hold new note */
1520
1521         framepos_t end_frame = _region->position() + beats_to_frames (new_note->end_time());
1522         framepos_t region_end = _region->position() + _region->length() - 1;
1523
1524         if (end_frame > region_end) {
1525                 _region->set_length (end_frame - _region->position(), this);
1526         }
1527
1528         _marked_for_selection.clear ();
1529         clear_selection ();
1530
1531         start_diff_command (_("step add"));
1532         diff_add_note (new_note, true, false);
1533         apply_diff();
1534
1535         // last_step_edit_note = new_note;
1536 }
1537
1538 void
1539 MidiRegionView::step_sustain (Evoral::MusicalTime beats)
1540 {
1541         change_note_lengths (false, false, beats, false, true);
1542 }
1543
1544 void
1545 MidiRegionView::add_pgm_change(PCEvent& program, const string& displaytext)
1546 {
1547         assert(program.time >= 0);
1548
1549         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1550         const double x = trackview.editor().frame_to_pixel(beats_to_frames(program.time));
1551
1552         double height = midi_stream_view()->contents_height();
1553
1554         boost::shared_ptr<CanvasProgramChange> pgm_change = boost::shared_ptr<CanvasProgramChange>(
1555                         new CanvasProgramChange(*this, *group,
1556                                         displaytext,
1557                                         height,
1558                                         x, 1.0,
1559                                         _model_name,
1560                                         _custom_device_mode,
1561                                         program.time, program.channel, program.value));
1562
1563         // Show unless program change is beyond the region bounds
1564         if (program.time - _region->start() >= _region->length() || program.time < _region->start()) {
1565                 pgm_change->hide();
1566         } else {
1567                 pgm_change->show();
1568         }
1569
1570         _pgm_changes.push_back(pgm_change);
1571 }
1572
1573 void
1574 MidiRegionView::get_patch_key_at(double time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1575 {
1576         Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1577         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1578         double msb = 0.0;
1579         if (msb_control != 0) {
1580                 msb = int(msb_control->get_double(true, time));
1581         }
1582
1583         Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1584         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1585         double lsb = 0.0;
1586         if (lsb_control != 0) {
1587                 lsb = lsb_control->get_double(true, time);
1588         }
1589
1590         Evoral::Parameter program_change(MidiPgmChangeAutomation, channel, 0);
1591         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1592         double program_number = -1.0;
1593         if (program_control != 0) {
1594                 program_number = program_control->get_double(true, time);
1595         }
1596
1597         key.msb = (int) floor(msb + 0.5);
1598         key.lsb = (int) floor(lsb + 0.5);
1599         key.program_number = (int) floor(program_number + 0.5);
1600         assert(key.is_sane());
1601 }
1602
1603
1604 void
1605 MidiRegionView::alter_program_change(PCEvent& old_program, const MIDI::Name::PatchPrimaryKey& new_patch)
1606 {
1607         // TODO: Get the real event here and alter them at the original times
1608         Evoral::Parameter bank_select_msb(MidiCCAutomation, old_program.channel, MIDI_CTL_MSB_BANK);
1609         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1610         if (msb_control != 0) {
1611                 msb_control->set_double(double(new_patch.msb), true, old_program.time);
1612         }
1613
1614         // TODO: Get the real event here and alter them at the original times
1615         Evoral::Parameter bank_select_lsb(MidiCCAutomation, old_program.channel, MIDI_CTL_LSB_BANK);
1616         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1617         if (lsb_control != 0) {
1618                 lsb_control->set_double(double(new_patch.lsb), true, old_program.time);
1619         }
1620
1621         Evoral::Parameter program_change(MidiPgmChangeAutomation, old_program.channel, 0);
1622         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1623
1624         assert(program_control != 0);
1625         program_control->set_double(float(new_patch.program_number), true, old_program.time);
1626
1627         _pgm_changes.clear ();
1628         display_program_changes (); // XXX would be nice to limit to just old_program.channel
1629 }
1630
1631 void
1632 MidiRegionView::program_selected(CanvasProgramChange& program, const MIDI::Name::PatchPrimaryKey& new_patch)
1633 {
1634         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1635         alter_program_change(program_change_event, new_patch);
1636 }
1637
1638 void
1639 MidiRegionView::previous_program(CanvasProgramChange& program)
1640 {
1641         if (program.program() < 127) {
1642                 MIDI::Name::PatchPrimaryKey key;
1643                 get_patch_key_at(program.event_time(), program.channel(), key);
1644                 PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1645
1646                 key.program_number++;
1647                 alter_program_change(program_change_event, key);
1648         }
1649 }
1650
1651 void
1652 MidiRegionView::next_program(CanvasProgramChange& program)
1653 {
1654         if (program.program() > 0) {
1655                 MIDI::Name::PatchPrimaryKey key;
1656                 get_patch_key_at(program.event_time(), program.channel(), key);
1657                 PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1658
1659                 key.program_number--;
1660                 alter_program_change(program_change_event, key);
1661         }
1662 }
1663
1664 void
1665 MidiRegionView::maybe_remove_deleted_note_from_selection (CanvasNoteEvent* cne)
1666 {
1667         if (_selection.empty()) {
1668                 return;
1669         }
1670
1671         if (_selection.erase (cne) > 0) {
1672                 cerr << "Erased a CNE from selection\n";
1673         }
1674 }
1675
1676 void
1677 MidiRegionView::delete_selection()
1678 {
1679         if (_selection.empty()) {
1680                 return;
1681         }
1682
1683         start_diff_command (_("delete selection"));
1684
1685         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1686                 if ((*i)->selected()) {
1687                         _diff_command->remove((*i)->note());
1688                 }
1689         }
1690
1691         _selection.clear();
1692
1693         apply_diff ();
1694 }
1695
1696 void
1697 MidiRegionView::delete_note (boost::shared_ptr<NoteType> n)
1698 {
1699         start_diff_command (_("delete note"));
1700         _diff_command->remove (n);
1701         apply_diff ();
1702
1703         trackview.editor().hide_verbose_canvas_cursor ();
1704 }
1705
1706 void
1707 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1708 {
1709         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1710                 if ((*i)->selected() && (*i) != ev) {
1711                         (*i)->set_selected(false);
1712                         (*i)->hide_velocity();
1713                 }
1714         }
1715
1716         _selection.clear();
1717 }
1718
1719 void
1720 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1721 {
1722         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
1723                 if ((*i) != ev) {
1724
1725                         Selection::iterator tmp = i;
1726                         ++tmp;
1727
1728                         (*i)->set_selected (false);
1729                         _selection.erase (i);
1730
1731                         i = tmp;
1732
1733                 } else {
1734                         ++i;
1735                 }
1736         }
1737
1738         /* don't bother with removing this regionview from the editor selection,
1739            since we're about to add another note, and thus put/keep this
1740            regionview in the editor selection.
1741         */
1742
1743         if (!ev->selected()) {
1744                 add_to_selection (ev);
1745         }
1746 }
1747
1748 void
1749 MidiRegionView::select_matching_notes (uint8_t notenum, uint16_t channel_mask, bool add, bool extend)
1750 {
1751         uint8_t low_note = 127;
1752         uint8_t high_note = 0;
1753         MidiModel::Notes& notes (_model->notes());
1754         _optimization_iterator = _events.begin();
1755
1756         if (!add) {
1757                 clear_selection ();
1758         }
1759
1760         if (extend && _selection.empty()) {
1761                 extend = false;
1762         }
1763
1764         if (extend) {
1765
1766                 /* scan existing selection to get note range */
1767
1768                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1769                         if ((*i)->note()->note() < low_note) {
1770                                 low_note = (*i)->note()->note();
1771                         }
1772                         if ((*i)->note()->note() > high_note) {
1773                                 high_note = (*i)->note()->note();
1774                         }
1775                 }
1776
1777                 low_note = min (low_note, notenum);
1778                 high_note = max (high_note, notenum);
1779         }
1780
1781         no_sound_notes = true;
1782
1783         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1784
1785                 boost::shared_ptr<NoteType> note (*n);
1786                 CanvasNoteEvent* cne;
1787                 bool select = false;
1788
1789                 if (((1 << note->channel()) & channel_mask) != 0) {
1790                         if (extend) {
1791                                 if ((note->note() >= low_note && note->note() <= high_note)) {
1792                                         select = true;
1793                                 }
1794                         } else if (note->note() == notenum) {
1795                                 select = true;
1796                         }
1797                 }
1798
1799                 if (select) {
1800                         if ((cne = find_canvas_note (note)) != 0) {
1801                                 // extend is false because we've taken care of it,
1802                                 // since it extends by time range, not pitch.
1803                                 note_selected (cne, add, false);
1804                         }
1805                 }
1806
1807                 add = true; // we need to add all remaining matching notes, even if the passed in value was false (for "set")
1808
1809         }
1810
1811         no_sound_notes = false;
1812 }
1813
1814 void
1815 MidiRegionView::toggle_matching_notes (uint8_t notenum, uint16_t channel_mask)
1816 {
1817         MidiModel::Notes& notes (_model->notes());
1818         _optimization_iterator = _events.begin();
1819
1820         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1821
1822                 boost::shared_ptr<NoteType> note (*n);
1823                 CanvasNoteEvent* cne;
1824
1825                 if (note->note() == notenum && (((0x0001 << note->channel()) & channel_mask) != 0)) {
1826                         if ((cne = find_canvas_note (note)) != 0) {
1827                                 if (cne->selected()) {
1828                                         note_deselected (cne);
1829                                 } else {
1830                                         note_selected (cne, true, false);
1831                                 }
1832                         }
1833                 }
1834         }
1835 }
1836
1837 void
1838 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add, bool extend)
1839 {
1840         if (!add) {
1841                 clear_selection_except(ev);
1842         }
1843
1844         if (!extend) {
1845
1846                 if (!ev->selected()) {
1847                         add_to_selection (ev);
1848                 }
1849
1850         } else {
1851                 /* find end of latest note selected, select all between that and the start of "ev" */
1852
1853                 Evoral::MusicalTime earliest = Evoral::MaxMusicalTime;
1854                 Evoral::MusicalTime latest = 0;
1855
1856                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1857                         if ((*i)->note()->end_time() > latest) {
1858                                 latest = (*i)->note()->end_time();
1859                         }
1860                         if ((*i)->note()->time() < earliest) {
1861                                 earliest = (*i)->note()->time();
1862                         }
1863                 }
1864
1865                 if (ev->note()->end_time() > latest) {
1866                         latest = ev->note()->end_time();
1867                 }
1868
1869                 if (ev->note()->time() < earliest) {
1870                         earliest = ev->note()->time();
1871                 }
1872
1873                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1874
1875                         /* find notes entirely within OR spanning the earliest..latest range */
1876
1877                         if (((*i)->note()->time() >= earliest && (*i)->note()->end_time() <= latest) ||
1878                             ((*i)->note()->time() <= earliest && (*i)->note()->end_time() >= latest)) {
1879                                 add_to_selection (*i);
1880                         }
1881
1882 #if 0
1883                         /* if events were guaranteed to be time sorted, we could do this.
1884                            but as of sept 10th 2009, they no longer are.
1885                         */
1886
1887                         if ((*i)->note()->time() > latest) {
1888                                 break;
1889                         }
1890 #endif
1891                 }
1892         }
1893 }
1894
1895 void
1896 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev)
1897 {
1898         remove_from_selection (ev);
1899 }
1900
1901 void
1902 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
1903 {
1904         if (x1 > x2) {
1905                 swap (x1, x2);
1906         }
1907
1908         if (y1 > y2) {
1909                 swap (y1, y2);
1910         }
1911
1912         // TODO: Make this faster by storing the last updated selection rect, and only
1913         // adjusting things that are in the area that appears/disappeared.
1914         // We probably need a tree to be able to find events in O(log(n)) time.
1915
1916         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1917
1918                 /* check if any corner of the note is inside the rect
1919
1920                    Notes:
1921                      1) this is computing "touched by", not "contained by" the rect.
1922                      2) this does not require that events be sorted in time.
1923                  */
1924
1925                 const double ix1 = (*i)->x1();
1926                 const double ix2 = (*i)->x2();
1927                 const double iy1 = (*i)->y1();
1928                 const double iy2 = (*i)->y2();
1929
1930                 if ((ix1 >= x1 && ix1 <= x2 && iy1 >= y1 && iy1 <= y2) ||
1931                     (ix1 >= x1 && ix1 <= x2 && iy2 >= y1 && iy2 <= y2) ||
1932                     (ix2 >= x1 && ix2 <= x2 && iy1 >= y1 && iy1 <= y2) ||
1933                     (ix2 >= x1 && ix2 <= x2 && iy2 >= y1 && iy2 <= y2)) {
1934
1935                         // Inside rectangle
1936                         if (!(*i)->selected()) {
1937                                 add_to_selection (*i);
1938                         }
1939                 } else if ((*i)->selected()) {
1940                         // Not inside rectangle
1941                         remove_from_selection (*i);
1942                 }
1943         }
1944 }
1945
1946 void
1947 MidiRegionView::remove_from_selection (CanvasNoteEvent* ev)
1948 {
1949         Selection::iterator i = _selection.find (ev);
1950
1951         if (i != _selection.end()) {
1952                 _selection.erase (i);
1953         }
1954
1955         ev->set_selected (false);
1956         ev->hide_velocity ();
1957
1958         if (_selection.empty()) {
1959                 PublicEditor& editor (trackview.editor());
1960                 editor.get_selection().remove (this);
1961         }
1962 }
1963
1964 void
1965 MidiRegionView::add_to_selection (CanvasNoteEvent* ev)
1966 {
1967         bool add_mrv_selection = false;
1968
1969         if (_selection.empty()) {
1970                 add_mrv_selection = true;
1971         }
1972
1973         if (_selection.insert (ev).second) {
1974                 ev->set_selected (true);
1975                 play_midi_note ((ev)->note());
1976         }
1977
1978         if (add_mrv_selection) {
1979                 PublicEditor& editor (trackview.editor());
1980                 editor.get_selection().add (this);
1981         }
1982 }
1983
1984 void
1985 MidiRegionView::move_selection(double dx, double dy, double cumulative_dy)
1986 {
1987         typedef vector<boost::shared_ptr<NoteType> > PossibleChord;
1988         PossibleChord to_play;
1989         Evoral::MusicalTime earliest = Evoral::MaxMusicalTime;
1990
1991         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1992                 if ((*i)->note()->time() < earliest) {
1993                         earliest = (*i)->note()->time();
1994                 }
1995         }
1996
1997         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1998                 if (Evoral::musical_time_equal ((*i)->note()->time(), earliest)) {
1999                         to_play.push_back ((*i)->note());
2000                 }
2001                 (*i)->move_event(dx, dy);
2002         }
2003
2004         if (dy && !_selection.empty() && !no_sound_notes && trackview.editor().sound_notes()) {
2005
2006                 if (to_play.size() > 1) {
2007
2008                         PossibleChord shifted;
2009
2010                         for (PossibleChord::iterator n = to_play.begin(); n != to_play.end(); ++n) {
2011                                 boost::shared_ptr<NoteType> moved_note (new NoteType (**n));
2012                                 moved_note->set_note (moved_note->note() + cumulative_dy);
2013                                 shifted.push_back (moved_note);
2014                         }
2015
2016                         play_midi_chord (shifted);
2017
2018                 } else if (!to_play.empty()) {
2019
2020                         boost::shared_ptr<NoteType> moved_note (new NoteType (*to_play.front()));
2021                         moved_note->set_note (moved_note->note() + cumulative_dy);
2022                         play_midi_note (moved_note);
2023                 }
2024         }
2025 }
2026
2027 void
2028 MidiRegionView::note_dropped(CanvasNoteEvent *, frameoffset_t dt, int8_t dnote)
2029 {
2030         assert (!_selection.empty());
2031
2032         uint8_t lowest_note_in_selection  = 127;
2033         uint8_t highest_note_in_selection = 0;
2034         uint8_t highest_note_difference = 0;
2035
2036         // find highest and lowest notes first
2037
2038         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2039                 uint8_t pitch = (*i)->note()->note();
2040                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
2041                 highest_note_in_selection = std::max(highest_note_in_selection, pitch);
2042         }
2043
2044         /*
2045         cerr << "dnote: " << (int) dnote << endl;
2046         cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
2047              << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
2048         cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
2049              << int(highest_note_in_selection) << endl;
2050         cerr << "selection size: " << _selection.size() << endl;
2051         cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
2052         */
2053
2054         // Make sure the note pitch does not exceed the MIDI standard range
2055         if (highest_note_in_selection + dnote > 127) {
2056                 highest_note_difference = highest_note_in_selection - 127;
2057         }
2058
2059         start_diff_command(_("move notes"));
2060
2061         for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ++i) {
2062
2063                 Evoral::MusicalTime new_time = frames_to_beats (beats_to_frames ((*i)->note()->time()) + dt);
2064
2065                 if (new_time < 0) {
2066                         continue;
2067                 }
2068
2069                 diff_add_change (*i, MidiModel::DiffCommand::StartTime, new_time);
2070
2071                 uint8_t original_pitch = (*i)->note()->note();
2072                 uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
2073
2074                 // keep notes in standard midi range
2075                 clamp_to_0_127(new_pitch);
2076
2077                 // keep original pitch if note is dragged outside valid midi range
2078                 if ((original_pitch != 0 && new_pitch == 0)
2079                                 || (original_pitch != 127 && new_pitch == 127)) {
2080                         new_pitch = original_pitch;
2081                 }
2082
2083                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
2084                 highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
2085
2086                 diff_add_change (*i, MidiModel::DiffCommand::NoteNumber, new_pitch);
2087         }
2088
2089         apply_diff();
2090
2091         // care about notes being moved beyond the upper/lower bounds on the canvas
2092         if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
2093             highest_note_in_selection > midi_stream_view()->highest_note()) {
2094                 midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
2095         }
2096 }
2097
2098 framepos_t
2099 MidiRegionView::snap_pixel_to_frame(double x)
2100 {
2101         PublicEditor& editor = trackview.editor();
2102         // x is region relative, convert it to global absolute frames
2103         framepos_t frame = editor.pixel_to_frame(x) + _region->position();
2104         editor.snap_to(frame);
2105         return frame - _region->position(); // convert back to region relative
2106 }
2107
2108 framepos_t
2109 MidiRegionView::snap_frame_to_frame(framepos_t x)
2110 {
2111         PublicEditor& editor = trackview.editor();
2112         // x is region relative, convert it to global absolute frames
2113         framepos_t frame = x + _region->position();
2114         editor.snap_to(frame);
2115         return frame - _region->position(); // convert back to region relative
2116 }
2117
2118 double
2119 MidiRegionView::snap_to_pixel(double x)
2120 {
2121         return (double) trackview.editor().frame_to_pixel(snap_pixel_to_frame(x));
2122 }
2123
2124 double
2125 MidiRegionView::get_position_pixels()
2126 {
2127         framepos_t region_frame = get_position();
2128         return trackview.editor().frame_to_pixel(region_frame);
2129 }
2130
2131 double
2132 MidiRegionView::get_end_position_pixels()
2133 {
2134         framepos_t frame = get_position() + get_duration ();
2135         return trackview.editor().frame_to_pixel(frame);
2136 }
2137
2138 framepos_t
2139 MidiRegionView::beats_to_frames(double beats) const
2140 {
2141         return _time_converter.to(beats);
2142 }
2143
2144 double
2145 MidiRegionView::frames_to_beats(framepos_t frames) const
2146 {
2147         return _time_converter.from(frames);
2148 }
2149
2150 void
2151 MidiRegionView::begin_resizing (bool /*at_front*/)
2152 {
2153         _resize_data.clear();
2154
2155         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2156                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
2157
2158                 // only insert CanvasNotes into the map
2159                 if (note) {
2160                         NoteResizeData *resize_data = new NoteResizeData();
2161                         resize_data->canvas_note = note;
2162
2163                         // create a new SimpleRect from the note which will be the resize preview
2164                         SimpleRect *resize_rect = new SimpleRect(
2165                                         *group, note->x1(), note->y1(), note->x2(), note->y2());
2166
2167                         // calculate the colors: get the color settings
2168                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
2169                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
2170                                         128);
2171
2172                         // make the resize preview notes more transparent and bright
2173                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
2174
2175                         // calculate color based on note velocity
2176                         resize_rect->property_fill_color_rgba() = UINT_INTERPOLATE(
2177                                 CanvasNoteEvent::meter_style_fill_color(note->note()->velocity(), note->selected()),
2178                                         fill_color,
2179                                         0.85);
2180
2181                         resize_rect->property_outline_color_rgba() = CanvasNoteEvent::calculate_outline(
2182                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
2183
2184                         resize_data->resize_rect = resize_rect;
2185                         _resize_data.push_back(resize_data);
2186                 }
2187         }
2188 }
2189
2190 /** Update resizing notes while user drags.
2191  * @param primary `primary' note for the drag; ie the one that is used as the reference in non-relative mode.
2192  * @param at_front which end of the note (true == note on, false == note off)
2193  * @param delta_x change in mouse position since the start of the drag
2194  * @param relative true if relative resizing is taking place, false if absolute resizing.  This only makes
2195  * a difference when multiple notes are being resized; in relative mode, each note's length is changed by the
2196  * amount of the drag.  In non-relative mode, all selected notes are set to have the same start or end point
2197  * as the \a primary note.
2198  */
2199 void
2200 MidiRegionView::update_resizing (ArdourCanvas::CanvasNote* primary, bool at_front, double delta_x, bool relative)
2201 {
2202         bool cursor_set = false;
2203
2204         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2205                 SimpleRect* resize_rect = (*i)->resize_rect;
2206                 CanvasNote* canvas_note = (*i)->canvas_note;
2207                 double current_x;
2208
2209                 if (at_front) {
2210                         if (relative) {
2211                                 current_x = canvas_note->x1() + delta_x;
2212                         } else {
2213                                 current_x = primary->x1() + delta_x;
2214                         }
2215                 } else {
2216                         if (relative) {
2217                                 current_x = canvas_note->x2() + delta_x;
2218                         } else {
2219                                 current_x = primary->x2() + delta_x;
2220                         }
2221                 }
2222
2223                 if (at_front) {
2224                         resize_rect->property_x1() = snap_to_pixel(current_x);
2225                         resize_rect->property_x2() = canvas_note->x2();
2226                 } else {
2227                         resize_rect->property_x2() = snap_to_pixel(current_x);
2228                         resize_rect->property_x1() = canvas_note->x1();
2229                 }
2230
2231                 if (!cursor_set) {
2232                         double beats;
2233
2234                         beats = snap_pixel_to_frame (current_x);
2235                         beats = frames_to_beats (beats);
2236
2237                         double len;
2238
2239                         if (at_front) {
2240                                 if (beats < canvas_note->note()->end_time()) {
2241                                         len = canvas_note->note()->time() - beats;
2242                                         len += canvas_note->note()->length();
2243                                 } else {
2244                                         len = 0;
2245                                 }
2246                         } else {
2247                                 if (beats >= canvas_note->note()->time()) {
2248                                         len = beats - canvas_note->note()->time();
2249                                 } else {
2250                                         len = 0;
2251                                 }
2252                         }
2253
2254                         char buf[16];
2255                         snprintf (buf, sizeof (buf), "%.3g beats", len);
2256                         trackview.editor().show_verbose_canvas_cursor_with (buf);
2257
2258                         cursor_set = true;
2259                 }
2260
2261         }
2262 }
2263
2264
2265 /** Finish resizing notes when the user releases the mouse button.
2266  *  Parameters the same as for \a update_resizing().
2267  */
2268 void
2269 MidiRegionView::commit_resizing (ArdourCanvas::CanvasNote* primary, bool at_front, double delta_x, bool relative)
2270 {
2271         start_diff_command(_("resize notes"));
2272
2273         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2274                 CanvasNote*  canvas_note = (*i)->canvas_note;
2275                 SimpleRect*  resize_rect = (*i)->resize_rect;
2276                 double current_x;
2277
2278                 if (at_front) {
2279                         if (relative) {
2280                                 current_x = canvas_note->x1() + delta_x;
2281                         } else {
2282                                 current_x = primary->x1() + delta_x;
2283                         }
2284                 } else {
2285                         if (relative) {
2286                                 current_x = canvas_note->x2() + delta_x;
2287                         } else {
2288                                 current_x = primary->x2() + delta_x;
2289                         }
2290                 }
2291
2292                 current_x = snap_pixel_to_frame (current_x);
2293                 current_x = frames_to_beats (current_x);
2294
2295                 if (at_front && current_x < canvas_note->note()->end_time()) {
2296                         diff_add_change (canvas_note, MidiModel::DiffCommand::StartTime, current_x);
2297
2298                         double len = canvas_note->note()->time() - current_x;
2299                         len += canvas_note->note()->length();
2300
2301                         if (len > 0) {
2302                                 /* XXX convert to beats */
2303                                 diff_add_change (canvas_note, MidiModel::DiffCommand::Length, len);
2304                         }
2305                 }
2306
2307                 if (!at_front) {
2308                         double len = current_x - canvas_note->note()->time();
2309
2310                         if (len > 0) {
2311                                 /* XXX convert to beats */
2312                                 diff_add_change (canvas_note, MidiModel::DiffCommand::Length, len);
2313                         }
2314                 }
2315
2316                 delete resize_rect;
2317                 delete (*i);
2318         }
2319
2320         _resize_data.clear();
2321         apply_diff();
2322 }
2323
2324 void
2325 MidiRegionView::change_note_channel (CanvasNoteEvent* event, int8_t channel)
2326 {
2327         diff_add_change (event, MidiModel::DiffCommand::Channel, (uint8_t) channel);
2328 }
2329
2330 void
2331 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
2332 {
2333         uint8_t new_velocity;
2334
2335         if (relative) {
2336                 new_velocity = event->note()->velocity() + velocity;
2337                 clamp_to_0_127(new_velocity);
2338         } else {
2339                 new_velocity = velocity;
2340         }
2341
2342         event->set_selected (event->selected()); // change color
2343
2344         diff_add_change (event, MidiModel::DiffCommand::Velocity, new_velocity);
2345 }
2346
2347 void
2348 MidiRegionView::change_note_note (CanvasNoteEvent* event, int8_t note, bool relative)
2349 {
2350         uint8_t new_note;
2351
2352         if (relative) {
2353                 new_note = event->note()->note() + note;
2354         } else {
2355                 new_note = note;
2356         }
2357
2358         clamp_to_0_127 (new_note);
2359         diff_add_change (event, MidiModel::DiffCommand::NoteNumber, new_note);
2360 }
2361
2362 void
2363 MidiRegionView::trim_note (CanvasNoteEvent* event, Evoral::MusicalTime front_delta, Evoral::MusicalTime end_delta)
2364 {
2365         bool change_start = false;
2366         bool change_length = false;
2367         Evoral::MusicalTime new_start = 0;
2368         Evoral::MusicalTime new_length = 0;
2369
2370         /* NOTE: the semantics of the two delta arguments are slightly subtle:
2371
2372            front_delta: if positive - move the start of the note later in time (shortening it)
2373                         if negative - move the start of the note earlier in time (lengthening it)
2374
2375            end_delta:   if positive - move the end of the note later in time (lengthening it)
2376                         if negative - move the end of the note earlier in time (shortening it)
2377          */
2378
2379         if (front_delta) {
2380                 if (front_delta < 0) {
2381
2382                         if (event->note()->time() < -front_delta) {
2383                                 new_start = 0;
2384                         } else {
2385                                 new_start = event->note()->time() + front_delta; // moves earlier
2386                         }
2387
2388                         /* start moved toward zero, so move the end point out to where it used to be.
2389                            Note that front_delta is negative, so this increases the length.
2390                         */
2391
2392                         new_length = event->note()->length() - front_delta;
2393                         change_start = true;
2394                         change_length = true;
2395
2396                 } else {
2397
2398                         Evoral::MusicalTime new_pos = event->note()->time() + front_delta;
2399
2400                         if (new_pos < event->note()->end_time()) {
2401                                 new_start = event->note()->time() + front_delta;
2402                                 /* start moved toward the end, so move the end point back to where it used to be */
2403                                 new_length = event->note()->length() - front_delta;
2404                                 change_start = true;
2405                                 change_length = true;
2406                         }
2407                 }
2408
2409         }
2410
2411         if (end_delta) {
2412                 bool can_change = true;
2413                 if (end_delta < 0) {
2414                         if (event->note()->length() < -end_delta) {
2415                                 can_change = false;
2416                         }
2417                 }
2418
2419                 if (can_change) {
2420                         new_length = event->note()->length() + end_delta;
2421                         change_length = true;
2422                 }
2423         }
2424
2425         if (change_start) {
2426                 diff_add_change (event, MidiModel::DiffCommand::StartTime, new_start);
2427         }
2428
2429         if (change_length) {
2430                 diff_add_change (event, MidiModel::DiffCommand::Length, new_length);
2431         }
2432 }
2433
2434 void
2435 MidiRegionView::change_note_time (CanvasNoteEvent* event, Evoral::MusicalTime delta, bool relative)
2436 {
2437         Evoral::MusicalTime new_time;
2438
2439         if (relative) {
2440                 if (delta < 0.0) {
2441                         if (event->note()->time() < -delta) {
2442                                 new_time = 0;
2443                         } else {
2444                                 new_time = event->note()->time() + delta;
2445                         }
2446                 } else {
2447                         new_time = event->note()->time() + delta;
2448                 }
2449         } else {
2450                 new_time = delta;
2451         }
2452
2453         diff_add_change (event, MidiModel::DiffCommand::StartTime, new_time);
2454 }
2455
2456 void
2457 MidiRegionView::change_note_length (CanvasNoteEvent* event, Evoral::MusicalTime t)
2458 {
2459         diff_add_change (event, MidiModel::DiffCommand::Length, t);
2460 }
2461
2462 void
2463 MidiRegionView::change_velocities (bool up, bool fine, bool allow_smush)
2464 {
2465         int8_t delta;
2466
2467         if (_selection.empty()) {
2468                 return;
2469         }
2470
2471         if (fine) {
2472                 delta = 1;
2473         } else {
2474                 delta = 10;
2475         }
2476
2477         if (!up) {
2478                 delta = -delta;
2479         }
2480
2481         if (!allow_smush) {
2482                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2483                         if ((*i)->note()->velocity() + delta == 0 || (*i)->note()->velocity() + delta == 127) {
2484                                 return;
2485                         }
2486                 }
2487         }
2488
2489         start_diff_command(_("change velocities"));
2490
2491         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
2492                 Selection::iterator next = i;
2493                 ++next;
2494                 change_note_velocity (*i, delta, true);
2495                 i = next;
2496         }
2497
2498         apply_diff();
2499
2500         if (!_selection.empty()) {
2501                 char buf[24];
2502                 snprintf (buf, sizeof (buf), "Vel %d",
2503                           (int) (*_selection.begin())->note()->velocity());
2504                 trackview.editor().show_verbose_canvas_cursor_with (buf, 10, 10);
2505         }
2506 }
2507
2508
2509 void
2510 MidiRegionView::transpose (bool up, bool fine, bool allow_smush)
2511 {
2512         if (_selection.empty()) {
2513                 return;
2514         }
2515
2516         int8_t delta;
2517
2518         if (fine) {
2519                 delta = 1;
2520         } else {
2521                 delta = 12;
2522         }
2523
2524         if (!up) {
2525                 delta = -delta;
2526         }
2527
2528         if (!allow_smush) {
2529                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2530                         if (!up) {
2531                                 if ((int8_t) (*i)->note()->note() + delta <= 0) {
2532                                         return;
2533                                 }
2534                         } else {
2535                                 if ((int8_t) (*i)->note()->note() + delta > 127) {
2536                                         return;
2537                                 }
2538                         }
2539                 }
2540         }
2541
2542         start_diff_command (_("transpose"));
2543
2544         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2545                 Selection::iterator next = i;
2546                 ++next;
2547                 change_note_note (*i, delta, true);
2548                 i = next;
2549         }
2550
2551         apply_diff ();
2552 }
2553
2554 void
2555 MidiRegionView::change_note_lengths (bool fine, bool shorter, Evoral::MusicalTime delta, bool start, bool end)
2556 {
2557         if (delta == 0.0) {
2558                 if (fine) {
2559                         delta = 1.0/128.0;
2560                 } else {
2561                         /* grab the current grid distance */
2562                         bool success;
2563                         delta = trackview.editor().get_grid_type_as_beats (success, _region->position());
2564                         if (!success) {
2565                                 /* XXX cannot get grid type as beats ... should always be possible ... FIX ME */
2566                                 cerr << "Grid type not available as beats - TO BE FIXED\n";
2567                                 return;
2568                         }
2569                 }
2570         }
2571
2572         if (shorter) {
2573                 delta = -delta;
2574         }
2575
2576         start_diff_command (_("change note lengths"));
2577
2578         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2579                 Selection::iterator next = i;
2580                 ++next;
2581
2582                 /* note the negation of the delta for start */
2583
2584                 trim_note (*i, (start ? -delta : 0), (end ? delta : 0));
2585                 i = next;
2586         }
2587
2588         apply_diff ();
2589
2590 }
2591
2592 void
2593 MidiRegionView::nudge_notes (bool forward)
2594 {
2595         if (_selection.empty()) {
2596                 return;
2597         }
2598
2599         /* pick a note as the point along the timeline to get the nudge distance.
2600            its not necessarily the earliest note, so we may want to pull the notes out
2601            into a vector and sort before using the first one.
2602         */
2603
2604         framepos_t ref_point = _region->position() + beats_to_frames ((*(_selection.begin()))->note()->time());
2605         framepos_t unused;
2606         framepos_t distance;
2607
2608         if (trackview.editor().snap_mode() == Editing::SnapOff) {
2609
2610                 /* grid is off - use nudge distance */
2611
2612                 distance = trackview.editor().get_nudge_distance (ref_point, unused);
2613
2614         } else {
2615
2616                 /* use grid */
2617
2618                 framepos_t next_pos = ref_point;
2619
2620                 if (forward) {
2621                         if (max_framepos - 1 < next_pos) {
2622                                 next_pos += 1;
2623                         }
2624                 } else {
2625                         if (next_pos == 0) {
2626                                 return;
2627                         }
2628                         next_pos -= 1;
2629                 }
2630
2631                 trackview.editor().snap_to (next_pos, (forward ? 1 : -1), false);
2632                 distance = ref_point - next_pos;
2633         }
2634
2635         if (distance == 0) {
2636                 return;
2637         }
2638
2639         Evoral::MusicalTime delta = frames_to_beats (fabs (distance));
2640
2641         if (!forward) {
2642                 delta = -delta;
2643         }
2644
2645         start_diff_command (_("nudge"));
2646
2647         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2648                 Selection::iterator next = i;
2649                 ++next;
2650                 change_note_time (*i, delta, true);
2651                 i = next;
2652         }
2653
2654         apply_diff ();
2655 }
2656
2657 void
2658 MidiRegionView::change_channel(uint8_t channel)
2659 {
2660         start_diff_command(_("change channel"));
2661         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2662                 diff_add_change (*i, MidiModel::DiffCommand::Channel, channel);
2663         }
2664
2665         apply_diff();
2666 }
2667
2668
2669 void
2670 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
2671 {
2672         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
2673
2674         pre_enter_cursor = editor->get_canvas_cursor ();
2675
2676         if (_mouse_state == SelectTouchDragging) {
2677                 note_selected (ev, true);
2678         }
2679
2680         show_verbose_canvas_cursor (ev->note ());
2681 }
2682
2683 void
2684 MidiRegionView::note_left (ArdourCanvas::CanvasNoteEvent* note)
2685 {
2686         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
2687
2688         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2689                 (*i)->hide_velocity ();
2690         }
2691
2692         editor->hide_verbose_canvas_cursor ();
2693
2694         if (pre_enter_cursor) {
2695                 editor->set_canvas_cursor (pre_enter_cursor);
2696                 pre_enter_cursor = 0;
2697         }
2698 }
2699
2700 void
2701 MidiRegionView::note_mouse_position (float x_fraction, float y_fraction, bool can_set_cursor)
2702 {
2703         Editor* editor = dynamic_cast<Editor*>(&trackview.editor());
2704
2705         if (x_fraction > 0.0 && x_fraction < 0.25) {
2706                 editor->set_canvas_cursor (editor->left_side_trim_cursor);
2707         } else if (x_fraction >= 0.75 && x_fraction < 1.0) {
2708                 editor->set_canvas_cursor (editor->right_side_trim_cursor);
2709         } else {
2710                 if (pre_enter_cursor && can_set_cursor) {
2711                         editor->set_canvas_cursor (pre_enter_cursor);
2712                 }
2713         }
2714 }
2715
2716 void
2717 MidiRegionView::set_frame_color()
2718 {
2719         if (frame) {
2720                 if (_selected && should_show_selection) {
2721                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
2722                 } else {
2723                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
2724                 }
2725         }
2726 }
2727
2728 void
2729 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
2730 {
2731         switch (mode) {
2732         case AllChannels:
2733         case FilterChannels:
2734                 _force_channel = -1;
2735                 break;
2736         case ForceChannel:
2737                 _force_channel = mask;
2738                 mask = 0xFFFF; // Show all notes as active (below)
2739         };
2740
2741         // Update notes for selection
2742         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2743                 (*i)->on_channel_selection_change(mask);
2744         }
2745
2746         _last_channel_selection = mask;
2747 }
2748
2749 void
2750 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
2751 {
2752         _model_name         = model;
2753         _custom_device_mode = custom_device_mode;
2754         redisplay_model();
2755 }
2756
2757 void
2758 MidiRegionView::cut_copy_clear (Editing::CutCopyOp op)
2759 {
2760         if (_selection.empty()) {
2761                 return;
2762         }
2763
2764         PublicEditor& editor (trackview.editor());
2765
2766         switch (op) {
2767         case Cut:
2768         case Copy:
2769                 editor.get_cut_buffer().add (selection_as_cut_buffer());
2770                 break;
2771         default:
2772                 break;
2773         }
2774
2775         if (op != Copy) {
2776
2777                 start_diff_command();
2778
2779                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2780                         switch (op) {
2781                         case Copy:
2782                                 break;
2783                         case Cut:
2784                         case Clear:
2785                                 diff_remove_note (*i);
2786                                 break;
2787                         }
2788                 }
2789
2790                 apply_diff();
2791         }
2792 }
2793
2794 MidiCutBuffer*
2795 MidiRegionView::selection_as_cut_buffer () const
2796 {
2797         Notes notes;
2798
2799         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2800                 NoteType* n = (*i)->note().get();
2801                 notes.insert (boost::shared_ptr<NoteType> (new NoteType (*n)));
2802         }
2803
2804         MidiCutBuffer* cb = new MidiCutBuffer (trackview.session());
2805         cb->set (notes);
2806
2807         return cb;
2808 }
2809
2810 void
2811 MidiRegionView::paste (framepos_t pos, float times, const MidiCutBuffer& mcb)
2812 {
2813         if (mcb.empty()) {
2814                 return;
2815         }
2816
2817         start_diff_command (_("paste"));
2818
2819         Evoral::MusicalTime beat_delta;
2820         Evoral::MusicalTime paste_pos_beats;
2821         Evoral::MusicalTime duration;
2822         Evoral::MusicalTime end_point = 0;
2823
2824         duration = (*mcb.notes().rbegin())->end_time() - (*mcb.notes().begin())->time();
2825         paste_pos_beats = frames_to_beats (pos - _region->position());
2826         beat_delta = (*mcb.notes().begin())->time() - paste_pos_beats;
2827         paste_pos_beats = 0;
2828
2829         clear_selection ();
2830
2831         for (int n = 0; n < (int) times; ++n) {
2832
2833                 for (Notes::const_iterator i = mcb.notes().begin(); i != mcb.notes().end(); ++i) {
2834
2835                         boost::shared_ptr<NoteType> copied_note (new NoteType (*((*i).get())));
2836                         copied_note->set_time (paste_pos_beats + copied_note->time() - beat_delta);
2837
2838                         /* make all newly added notes selected */
2839
2840                         diff_add_note (copied_note, true);
2841                         end_point = copied_note->end_time();
2842                 }
2843
2844                 paste_pos_beats += duration;
2845         }
2846
2847         /* if we pasted past the current end of the region, extend the region */
2848
2849         framepos_t end_frame = _region->position() + beats_to_frames (end_point);
2850         framepos_t region_end = _region->position() + _region->length() - 1;
2851
2852         if (end_frame > region_end) {
2853
2854                 trackview.session()->begin_reversible_command (_("paste"));
2855
2856                 _region->clear_changes ();
2857                 _region->set_length (end_frame, this);
2858                 trackview.session()->add_command (new StatefulDiffCommand (_region));
2859         }
2860
2861         apply_diff ();
2862 }
2863
2864 struct EventNoteTimeEarlyFirstComparator {
2865     bool operator() (CanvasNoteEvent* a, CanvasNoteEvent* b) {
2866             return a->note()->time() < b->note()->time();
2867     }
2868 };
2869
2870 void
2871 MidiRegionView::time_sort_events ()
2872 {
2873         if (!_sort_needed) {
2874                 return;
2875         }
2876
2877         EventNoteTimeEarlyFirstComparator cmp;
2878         _events.sort (cmp);
2879
2880         _sort_needed = false;
2881 }
2882
2883 void
2884 MidiRegionView::goto_next_note ()
2885 {
2886         // framepos_t pos = -1;
2887         bool use_next = false;
2888
2889         if (_events.back()->selected()) {
2890                 return;
2891         }
2892
2893         time_sort_events ();
2894
2895         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2896                 if ((*i)->selected()) {
2897                         use_next = true;
2898                         continue;
2899                 } else if (use_next) {
2900                         unique_select (*i);
2901                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
2902                         return;
2903                 }
2904         }
2905
2906         /* use the first one */
2907
2908         unique_select (_events.front());
2909
2910 }
2911
2912 void
2913 MidiRegionView::goto_previous_note ()
2914 {
2915         // framepos_t pos = -1;
2916         bool use_next = false;
2917
2918         if (_events.front()->selected()) {
2919                 return;
2920         }
2921
2922         time_sort_events ();
2923
2924         for (Events::reverse_iterator i = _events.rbegin(); i != _events.rend(); ++i) {
2925                 if ((*i)->selected()) {
2926                         use_next = true;
2927                         continue;
2928                 } else if (use_next) {
2929                         unique_select (*i);
2930                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
2931                         return;
2932                 }
2933         }
2934
2935         /* use the last one */
2936
2937         unique_select (*(_events.rbegin()));
2938 }
2939
2940 void
2941 MidiRegionView::selection_as_notelist (Notes& selected, bool allow_all_if_none_selected)
2942 {
2943         bool had_selected = false;
2944
2945         time_sort_events ();
2946
2947         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2948                 if ((*i)->selected()) {
2949                         selected.insert ((*i)->note());
2950                         had_selected = true;
2951                 }
2952         }
2953
2954         if (allow_all_if_none_selected && !had_selected) {
2955                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2956                         selected.insert ((*i)->note());
2957                 }
2958         }
2959 }
2960
2961 void
2962 MidiRegionView::update_ghost_note (double x, double y)
2963 {
2964         _last_ghost_x = x;
2965         _last_ghost_y = y;
2966
2967         group->w2i (x, y);
2968         framepos_t f = trackview.editor().pixel_to_frame (x) + _region->position ();
2969         trackview.editor().snap_to (f);
2970         f -= _region->position ();
2971
2972         bool success;
2973         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, f);
2974         if (!success) {
2975                 beats = 1;
2976         }
2977
2978         double length = frames_to_beats (snap_frame_to_frame (f + beats_to_frames (beats)) - f);
2979
2980         _ghost_note->note()->set_time (frames_to_beats (f + _region->start()));
2981         _ghost_note->note()->set_length (length);
2982         _ghost_note->note()->set_note (midi_stream_view()->y_to_note (y));
2983
2984         update_note (_ghost_note);
2985
2986         show_verbose_canvas_cursor (_ghost_note->note ());
2987 }
2988
2989 void
2990 MidiRegionView::create_ghost_note (double x, double y)
2991 {
2992         delete _ghost_note;
2993         _ghost_note = 0;
2994
2995         boost::shared_ptr<NoteType> g (new NoteType);
2996         _ghost_note = new NoEventCanvasNote (*this, *group, g);
2997         update_ghost_note (x, y);
2998         _ghost_note->show ();
2999
3000         _last_ghost_x = x;
3001         _last_ghost_y = y;
3002
3003         show_verbose_canvas_cursor (_ghost_note->note ());
3004 }
3005
3006 void
3007 MidiRegionView::snap_changed ()
3008 {
3009         if (!_ghost_note) {
3010                 return;
3011         }
3012
3013         create_ghost_note (_last_ghost_x, _last_ghost_y);
3014 }
3015
3016 void
3017 MidiRegionView::show_verbose_canvas_cursor (boost::shared_ptr<NoteType> n) const
3018 {
3019         char buf[24];
3020         snprintf (buf, sizeof (buf), "%s (%d)\nVel %d",
3021                   Evoral::midi_note_name (n->note()).c_str(),
3022                   (int) n->note (),
3023                   (int) n->velocity());
3024         trackview.editor().show_verbose_canvas_cursor_with (buf, 10, 20);
3025 }
3026
3027 void
3028 MidiRegionView::drop_down_keys ()
3029 {
3030         _mouse_state = None;
3031 }
3032
3033 void
3034 MidiRegionView::maybe_select_by_position (GdkEventButton* ev, double x, double y)
3035 {
3036         double note = midi_stream_view()->y_to_note(y);
3037         Events e;
3038         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
3039
3040         cerr << "Selecting by position\n";
3041
3042         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
3043
3044         if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
3045                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchGreaterThanOrEqual, (uint8_t) floor (note), chn_mask);
3046         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
3047                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchLessThanOrEqual, (uint8_t) floor (note), chn_mask);
3048         } else {
3049                 return;
3050         }
3051
3052         bool add_mrv_selection = false;
3053
3054         if (_selection.empty()) {
3055                 add_mrv_selection = true;
3056         }
3057
3058         for (Events::iterator i = e.begin(); i != e.end(); ++i) {
3059                 if (_selection.insert (*i).second) {
3060                         (*i)->set_selected (true);
3061                 }
3062         }
3063
3064         if (add_mrv_selection) {
3065                 PublicEditor& editor (trackview.editor());
3066                 editor.get_selection().add (this);
3067         }
3068 }
3069
3070 void
3071 MidiRegionView::color_handler ()
3072 {
3073         RegionView::color_handler ();
3074
3075         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
3076                 (*i)->set_selected ((*i)->selected()); // will change color
3077         }
3078
3079         /* XXX probably more to do here */
3080 }
3081
3082 void
3083 MidiRegionView::enable_display (bool yn)
3084 {
3085         RegionView::enable_display (yn);
3086         if (yn) {
3087                 redisplay_model ();
3088         }
3089 }
3090
3091 void
3092 MidiRegionView::show_step_edit_cursor (Evoral::MusicalTime pos)
3093 {
3094         if (_step_edit_cursor == 0) {
3095                 ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
3096
3097                 _step_edit_cursor = new ArdourCanvas::SimpleRect (*group);
3098                 _step_edit_cursor->property_y1() = 0;
3099                 _step_edit_cursor->property_y2() = midi_stream_view()->contents_height();
3100                 _step_edit_cursor->property_fill_color_rgba() = RGBA_TO_UINT (45,0,0,90);
3101                 _step_edit_cursor->property_outline_color_rgba() = RGBA_TO_UINT (85,0,0,90);
3102         }
3103
3104         move_step_edit_cursor (pos);
3105         _step_edit_cursor->show ();
3106 }
3107
3108 void
3109 MidiRegionView::move_step_edit_cursor (Evoral::MusicalTime pos)
3110 {
3111         _step_edit_cursor_position = pos;
3112
3113         if (_step_edit_cursor) {
3114                 double pixel = trackview.editor().frame_to_pixel (beats_to_frames (pos));
3115                 _step_edit_cursor->property_x1() = pixel;
3116                 set_step_edit_cursor_width (_step_edit_cursor_width);
3117         }
3118 }
3119
3120 void
3121 MidiRegionView::hide_step_edit_cursor ()
3122 {
3123         if (_step_edit_cursor) {
3124                 _step_edit_cursor->hide ();
3125         }
3126 }
3127
3128 void
3129 MidiRegionView::set_step_edit_cursor_width (Evoral::MusicalTime beats)
3130 {
3131         _step_edit_cursor_width = beats;
3132
3133         if (_step_edit_cursor) {
3134                 _step_edit_cursor->property_x2() = _step_edit_cursor->property_x1() + trackview.editor().frame_to_pixel (beats_to_frames (beats));
3135         }
3136 }
3137
3138 /** Called when a diskstream on our track has received some data.  Update the view, if applicable.
3139  *  @param buf Data that has been recorded.
3140  *  @param w Source that this data will end up in.
3141  */
3142 void
3143 MidiRegionView::data_recorded (boost::shared_ptr<MidiBuffer> buf, boost::weak_ptr<MidiSource> w)
3144 {
3145         if (!_active_notes) {
3146                 /* we aren't actively being recorded to */
3147                 return;
3148         }
3149
3150         boost::shared_ptr<MidiSource> src = w.lock ();
3151         if (!src || src != midi_region()->midi_source()) {
3152                 /* recorded data was not destined for our source */
3153                 return;
3154         }
3155
3156         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&trackview);
3157         BeatsFramesConverter converter (trackview.session()->tempo_map(), mtv->midi_track()->get_capture_start_frame (0));
3158
3159         for (MidiBuffer::iterator i = buf->begin(); i != buf->end(); ++i) {
3160                 Evoral::MIDIEvent<MidiBuffer::TimeType> const ev (*i, false);
3161                 assert (ev.buffer ());
3162
3163                 Evoral::MusicalTime const time_beats = converter.from (ev.time () - converter.origin_b ());
3164
3165                 if (ev.type() == MIDI_CMD_NOTE_ON) {
3166
3167                         boost::shared_ptr<Evoral::Note<Evoral::MusicalTime> > note (
3168                                 new Evoral::Note<Evoral::MusicalTime> (ev.channel(), time_beats, 0, ev.note(), ev.velocity())
3169                                 );
3170
3171                         add_note (note, true);
3172
3173                         /* fix up our note range */
3174                         if (ev.note() < _current_range_min) {
3175                                 midi_stream_view()->apply_note_range (ev.note(), _current_range_max, true);
3176                         } else if (ev.note() > _current_range_max) {
3177                                 midi_stream_view()->apply_note_range (_current_range_min, ev.note(), true);
3178                         }
3179
3180                 } else if (ev.type() == MIDI_CMD_NOTE_OFF) {
3181                         resolve_note (ev.note (), time_beats);
3182                 }
3183         }
3184 }