gtk2_ardour/midi_region_view.cc

   1 /*
   2     Copyright (C) 2001-2007 Paul Davis
   3     Author: Dave Robillard
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include <cmath>
  21 #include <cassert>
  22 #include <algorithm>
  23 #include <ostream>
  24
  25 #include <gtkmm.h>
  26
  27 #include <gtkmm2ext/gtk_ui.h>
  28
  29 #include <sigc++/signal.h>
  30
  31 #include "pbd/memento_command.h"
  32 #include "pbd/stateful_diff_command.h"
  33
  34 #include "ardour/playlist.h"
  35 #include "ardour/tempo.h"
  36 #include "ardour/midi_region.h"
  37 #include "ardour/midi_source.h"
  38 #include "ardour/midi_model.h"
  39 #include "ardour/midi_patch_manager.h"
  40 #include "ardour/session.h"
  41
  42 #include "evoral/Parameter.hpp"
  43 #include "evoral/MIDIParameters.hpp"
  44 #include "evoral/Control.hpp"
  45 #include "evoral/midi_util.h"
  46
  47 #include "automation_region_view.h"
  48 #include "automation_time_axis.h"
  49 #include "canvas-hit.h"
  50 #include "canvas-note.h"
  51 #include "canvas-program-change.h"
  52 #include "ghostregion.h"
  53 #include "gui_thread.h"
  54 #include "keyboard.h"
  55 #include "midi_cut_buffer.h"
  56 #include "midi_list_editor.h"
  57 #include "midi_region_view.h"
  58 #include "midi_streamview.h"
  59 #include "midi_time_axis.h"
  60 #include "midi_time_axis.h"
  61 #include "midi_util.h"
  62 #include "public_editor.h"
  63 #include "rgb_macros.h"
  64 #include "selection.h"
  65 #include "simpleline.h"
  66 #include "streamview.h"
  67 #include "utils.h"
  68
  69 #include "i18n.h"
  70
  71 using namespace ARDOUR;
  72 using namespace PBD;
  73 using namespace Editing;
  74 using namespace ArdourCanvas;
  75 using Gtkmm2ext::Keyboard;
  76
  77 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
  78                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color const & basic_color)
  79         : RegionView (parent, tv, r, spu, basic_color)
  80         , _force_channel(-1)
  81         , _last_channel_selection(0xFFFF)
  82         , _current_range_min(0)
  83         , _current_range_max(0)
  84         , _model_name(string())
  85         , _custom_device_mode(string())
  86         , _active_notes(0)
  87         , _note_group(new ArdourCanvas::Group(*parent))
  88         , _diff_command(0)
  89         , _ghost_note(0)
  90         , _drag_rect (0)
  91         , _step_edit_cursor (0)
  92         , _step_edit_cursor_width (1.0)
  93         , _step_edit_cursor_position (0.0)
  94         , _mouse_state(None)
  95         , _pressed_button(0)
  96         , _sort_needed (true)
  97         , _optimization_iterator (_events.end())
  98         , _list_editor (0)
  99         , no_sound_notes (false)
 100 {
 101         _note_group->raise_to_top();
 102         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 103 }
 104
 105 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
 106                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color,
 107                 TimeAxisViewItem::Visibility visibility)
 108         : RegionView (parent, tv, r, spu, basic_color, false, visibility)
 109         , _force_channel(-1)
 110         , _last_channel_selection(0xFFFF)
 111         , _model_name(string())
 112         , _custom_device_mode(string())
 113         , _active_notes(0)
 114         , _note_group(new ArdourCanvas::Group(*parent))
 115         , _diff_command(0)
 116         , _ghost_note(0)
 117         , _drag_rect (0)
 118         , _mouse_state(None)
 119         , _pressed_button(0)
 120         , _sort_needed (true)
 121         , _optimization_iterator (_events.end())
 122         , _list_editor (0)
 123         , no_sound_notes (false)
 124 {
 125         _note_group->raise_to_top();
 126         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 127 }
 128
 129 MidiRegionView::MidiRegionView (const MidiRegionView& other)
 130         : sigc::trackable(other)
 131         , RegionView (other)
 132         , _force_channel(-1)
 133         , _last_channel_selection(0xFFFF)
 134         , _model_name(string())
 135         , _custom_device_mode(string())
 136         , _active_notes(0)
 137         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 138         , _diff_command(0)
 139         , _ghost_note(0)
 140         , _drag_rect (0)
 141         , _mouse_state(None)
 142         , _pressed_button(0)
 143         , _sort_needed (true)
 144         , _optimization_iterator (_events.end())
 145         , _list_editor (0)
 146         , no_sound_notes (false)
 147 {
 148         Gdk::Color c;
 149         int r,g,b,a;
 150
 151         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 152         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 153
 154         init (c, false);
 155 }
 156
 157 MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<MidiRegion> region)
 158         : RegionView (other, boost::shared_ptr<Region> (region))
 159         , _force_channel(-1)
 160         , _last_channel_selection(0xFFFF)
 161         , _model_name(string())
 162         , _custom_device_mode(string())
 163         , _active_notes(0)
 164         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 165         , _diff_command(0)
 166         , _ghost_note(0)
 167         , _drag_rect (0)
 168         , _mouse_state(None)
 169         , _pressed_button(0)
 170         , _sort_needed (true)
 171         , _optimization_iterator (_events.end())
 172         , _list_editor (0)
 173         , no_sound_notes (false)
 174 {
 175         Gdk::Color c;
 176         int r,g,b,a;
 177
 178         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 179         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 180
 181         init (c, true);
 182 }
 183
 184 void
 185 MidiRegionView::init (Gdk::Color const & basic_color, bool wfd)
 186 {
 187         PublicEditor::DropDownKeys.connect (sigc::mem_fun (*this, &MidiRegionView::drop_down_keys));
 188
 189         CanvasNoteEvent::CanvasNoteEventDeleted.connect (note_delete_connection, MISSING_INVALIDATOR,
 190                                                          ui_bind (&MidiRegionView::maybe_remove_deleted_note_from_selection, this, _1),
 191                                                          gui_context());
 192
 193         if (wfd) {
 194                 midi_region()->midi_source(0)->load_model();
 195         }
 196
 197         _model = midi_region()->midi_source(0)->model();
 198         _enable_display = false;
 199
 200         RegionView::init (basic_color, false);
 201
 202         compute_colors (basic_color);
 203
 204         set_height (trackview.current_height());
 205
 206         region_muted ();
 207         region_sync_changed ();
 208         region_resized (ARDOUR::bounds_change);
 209         region_locked ();
 210
 211         reset_width_dependent_items (_pixel_width);
 212
 213         set_colors ();
 214
 215         _enable_display = true;
 216         if (_model) {
 217                 if (wfd) {
 218                         display_model (_model);
 219                 }
 220         }
 221
 222         group->raise_to_top();
 223         group->signal_event().connect (sigc::mem_fun (this, &MidiRegionView::canvas_event), false);
 224
 225         midi_view()->signal_channel_mode_changed().connect(
 226                         sigc::mem_fun(this, &MidiRegionView::midi_channel_mode_changed));
 227
 228         midi_view()->signal_midi_patch_settings_changed().connect(
 229                         sigc::mem_fun(this, &MidiRegionView::midi_patch_settings_changed));
 230
 231         trackview.editor().SnapChanged.connect (snap_changed_connection, invalidator (*this), ui_bind (&MidiRegionView::snap_changed, this), gui_context ());
 232 }
 233
 234 bool
 235 MidiRegionView::canvas_event(GdkEvent* ev)
 236 {
 237         if (!trackview.editor().internal_editing()) {
 238                 return false;
 239         }
 240
 241         /* XXX: note that until version 2.30, the GnomeCanvas did not propagate scroll events
 242            to its items, which means that ev->type == GDK_SCROLL will never be seen
 243         */
 244
 245         switch (ev->type) {
 246         case GDK_SCROLL:
 247                 return scroll (&ev->scroll);
 248
 249         case GDK_KEY_PRESS:
 250                 return key_press (&ev->key);
 251
 252         case GDK_KEY_RELEASE:
 253                 return key_release (&ev->key);
 254
 255         case GDK_BUTTON_PRESS:
 256                 return button_press (&ev->button);
 257
 258         case GDK_2BUTTON_PRESS:
 259                 return true;
 260
 261         case GDK_BUTTON_RELEASE:
 262                 return button_release (&ev->button);
 263
 264         case GDK_ENTER_NOTIFY:
 265                 return enter_notify (&ev->crossing);
 266
 267         case GDK_LEAVE_NOTIFY:
 268                 return leave_notify (&ev->crossing);
 269
 270         case GDK_MOTION_NOTIFY:
 271                 return motion (&ev->motion);
 272
 273         default:
 274                 break;
 275         }
 276
 277         return false;
 278 }
 279
 280 bool
 281 MidiRegionView::enter_notify (GdkEventCrossing* ev)
 282 {
 283         /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 284
 285         Keyboard::magic_widget_grab_focus();
 286         group->grab_focus();
 287
 288         if (trackview.editor().current_mouse_mode() == MouseRange) {
 289                 create_ghost_note (ev->x, ev->y);
 290         }
 291
 292         return false;
 293 }
 294
 295 bool
 296 MidiRegionView::leave_notify (GdkEventCrossing* ev)
 297 {
 298         trackview.editor().hide_verbose_canvas_cursor ();
 299         delete _ghost_note;
 300         _ghost_note = 0;
 301         return false;
 302 }
 303
 304 bool
 305 MidiRegionView::button_press (GdkEventButton* ev)
 306 {
 307         _last_x = ev->x;
 308         _last_y = ev->y;
 309         group->w2i (_last_x, _last_y);
 310
 311         if (_mouse_state != SelectTouchDragging && ev->button == 1) {
 312                 _pressed_button = ev->button;
 313                 _mouse_state = Pressed;
 314                 return true;
 315         }
 316
 317         _pressed_button = ev->button;
 318
 319         return true;
 320 }
 321
 322 bool
 323 MidiRegionView::button_release (GdkEventButton* ev)
 324 {
 325         double event_x, event_y;
 326         nframes64_t event_frame = 0;
 327
 328         event_x = ev->x;
 329         event_y = ev->y;
 330         group->w2i(event_x, event_y);
 331         group->ungrab(ev->time);
 332         event_frame = trackview.editor().pixel_to_frame(event_x);
 333
 334         if (ev->button == 3) {
 335                 return false;
 336         } else if (_pressed_button != 1) {
 337                 return false;
 338         }
 339
 340         switch (_mouse_state) {
 341         case Pressed: // Clicked
 342                 switch (trackview.editor().current_mouse_mode()) {
 343                 case MouseObject:
 344                 case MouseTimeFX:
 345                         clear_selection();
 346                         maybe_select_by_position (ev, event_x, event_y);
 347                         break;
 348
 349                 case MouseRange:
 350                 {
 351                         bool success;
 352                         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, trackview.editor().pixel_to_frame (event_x));
 353                         if (!success) {
 354                                 beats = 1;
 355                         }
 356                         create_note_at (event_x, event_y, beats, true);
 357                         break;
 358                 }
 359                 default:
 360                         break;
 361                 }
 362                 _mouse_state = None;
 363                 break;
 364         case SelectRectDragging: // Select drag done
 365                 _mouse_state = None;
 366                 delete _drag_rect;
 367                 _drag_rect = 0;
 368                 break;
 369
 370         case AddDragging: // Add drag done
 371                 _mouse_state = None;
 372                 if (_drag_rect->property_x2() > _drag_rect->property_x1() + 2) {
 373                         const double x      = _drag_rect->property_x1();
 374                         const double length = trackview.editor().pixel_to_frame
 375                                 (_drag_rect->property_x2() - _drag_rect->property_x1());
 376
 377                         create_note_at (x, _drag_rect->property_y1(), frames_to_beats(length), false);
 378                 }
 379
 380                 delete _drag_rect;
 381                 _drag_rect = 0;
 382
 383                 create_ghost_note (ev->x, ev->y);
 384
 385         default:
 386                 break;
 387         }
 388
 389         return false;
 390 }
 391
 392 bool
 393 MidiRegionView::motion (GdkEventMotion* ev)
 394 {
 395         double event_x, event_y;
 396         nframes64_t event_frame = 0;
 397
 398         event_x = ev->x;
 399         event_y = ev->y;
 400         group->w2i(event_x, event_y);
 401
 402         // convert event_x to global frame
 403         event_frame = trackview.editor().pixel_to_frame(event_x) + _region->position();
 404         trackview.editor().snap_to(event_frame);
 405         // convert event_frame back to local coordinates relative to position
 406         event_frame -= _region->position();
 407
 408         if (_ghost_note) {
 409                 update_ghost_note (ev->x, ev->y);
 410         }
 411
 412         /* any motion immediately hides velocity text that may have been visible */
 413
 414         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 415                 (*i)->hide_velocity ();
 416         }
 417
 418         switch (_mouse_state) {
 419         case Pressed: // Maybe start a drag, if we've moved a bit
 420
 421                 if (fabs (event_x - _last_x) < 1 && fabs (event_y - _last_y) < 1) {
 422                         /* no appreciable movement since the button was pressed */
 423                         return false;
 424                 }
 425
 426                 // Select drag start
 427                 if (_pressed_button == 1 && trackview.editor().current_mouse_mode() == MouseObject) {
 428                         group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 429                                     Gdk::Cursor(Gdk::FLEUR), ev->time);
 430                         _last_x = event_x;
 431                         _last_y = event_y;
 432                         _drag_start_x = event_x;
 433                         _drag_start_y = event_y;
 434
 435                         _drag_rect = new ArdourCanvas::SimpleRect(*group);
 436                         _drag_rect->property_x1() = event_x;
 437                         _drag_rect->property_y1() = event_y;
 438                         _drag_rect->property_x2() = event_x;
 439                         _drag_rect->property_y2() = event_y;
 440                         _drag_rect->property_outline_what() = 0xFF;
 441                         _drag_rect->property_outline_color_rgba()
 442                                 = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 443                         _drag_rect->property_fill_color_rgba()
 444                                 = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 445
 446                         _mouse_state = SelectRectDragging;
 447                         return true;
 448
 449                         // Add note drag start
 450                 } else if (trackview.editor().internal_editing()) {
 451
 452                         delete _ghost_note;
 453                         _ghost_note = 0;
 454
 455                         group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 456                                     Gdk::Cursor(Gdk::FLEUR), ev->time);
 457                         _last_x = event_x;
 458                         _last_y = event_y;
 459                         _drag_start_x = event_x;
 460                         _drag_start_y = event_y;
 461
 462                         _drag_rect = new ArdourCanvas::SimpleRect(*group);
 463                         _drag_rect->property_x1() = trackview.editor().frame_to_pixel(event_frame);
 464
 465                         _drag_rect->property_y1() = midi_stream_view()->note_to_y(
 466                                 midi_stream_view()->y_to_note(event_y));
 467                         _drag_rect->property_x2() = trackview.editor().frame_to_pixel(event_frame);
 468                         _drag_rect->property_y2() = _drag_rect->property_y1()
 469                                 + floor(midi_stream_view()->note_height());
 470                         _drag_rect->property_outline_what() = 0xFF;
 471                         _drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 472                         _drag_rect->property_fill_color_rgba()    = 0xFFFFFF66;
 473
 474                         _mouse_state = AddDragging;
 475                         return true;
 476                 }
 477
 478                 return false;
 479
 480         case SelectRectDragging: // Select drag motion
 481         case AddDragging: // Add note drag motion
 482                 if (ev->is_hint) {
 483                         int t_x;
 484                         int t_y;
 485                         GdkModifierType state;
 486                         gdk_window_get_pointer(ev->window, &t_x, &t_y, &state);
 487                         event_x = t_x;
 488                         event_y = t_y;
 489                 }
 490
 491                 if (_mouse_state == AddDragging)
 492                         event_x = trackview.editor().frame_to_pixel(event_frame);
 493
 494                 if (_drag_rect) {
 495                         if (event_x > _drag_start_x)
 496                                 _drag_rect->property_x2() = event_x;
 497                         else
 498                                 _drag_rect->property_x1() = event_x;
 499                 }
 500
 501                 if (_drag_rect && _mouse_state == SelectRectDragging) {
 502                         if (event_y > _drag_start_y)
 503                                 _drag_rect->property_y2() = event_y;
 504                         else
 505                                 _drag_rect->property_y1() = event_y;
 506
 507                         update_drag_selection(_drag_start_x, event_x, _drag_start_y, event_y);
 508                 }
 509
 510                 _last_x = event_x;
 511                 _last_y = event_y;
 512
 513         case SelectTouchDragging:
 514                 return false;
 515
 516         default:
 517                 break;
 518         }
 519
 520         return false;
 521 }
 522
 523
 524 bool
 525 MidiRegionView::scroll (GdkEventScroll* ev)
 526 {
 527         if (_selection.empty()) {
 528                 return false;
 529         }
 530
 531         trackview.editor().hide_verbose_canvas_cursor ();
 532
 533         bool fine = !Keyboard::modifier_state_equals (ev->state, Keyboard::SecondaryModifier);
 534
 535         if (ev->direction == GDK_SCROLL_UP) {
 536                 change_velocities (true, fine, false);
 537         } else if (ev->direction == GDK_SCROLL_DOWN) {
 538                 change_velocities (false, fine, false);
 539         }
 540         return true;
 541 }
 542
 543 bool
 544 MidiRegionView::key_press (GdkEventKey* ev)
 545 {
 546         /* since GTK bindings are generally activated on press, and since
 547            detectable auto-repeat is the name of the game and only sends
 548            repeated presses, carry out key actions at key press, not release.
 549         */
 550
 551         if (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R){
 552                 _mouse_state = SelectTouchDragging;
 553                 return true;
 554
 555         } else if (ev->keyval == GDK_Escape) {
 556                 clear_selection();
 557                 _mouse_state = None;
 558
 559         } else if (ev->keyval == GDK_comma || ev->keyval == GDK_period) {
 560
 561                 bool start = (ev->keyval == GDK_comma);
 562                 bool end = (ev->keyval == GDK_period);
 563                 bool shorter = Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier);
 564                 bool fine = Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 565
 566                 change_note_lengths (fine, shorter, 0.0, start, end);
 567
 568                 return true;
 569
 570         } else if (ev->keyval == GDK_Delete) {
 571
 572                 delete_selection();
 573                 return true;
 574
 575         } else if (ev->keyval == GDK_Tab) {
 576
 577                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 578                         goto_previous_note ();
 579                 } else {
 580                         goto_next_note ();
 581                 }
 582                 return true;
 583
 584         } else if (ev->keyval == GDK_Up) {
 585
 586                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 587                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 588
 589                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 590                         change_velocities (true, fine, allow_smush);
 591                 } else {
 592                         transpose (true, fine, allow_smush);
 593                 }
 594                 return true;
 595
 596         } else if (ev->keyval == GDK_Down) {
 597
 598                 bool allow_smush = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 599                 bool fine = !Keyboard::modifier_state_contains (ev->state, Keyboard::SecondaryModifier);
 600
 601                 if (Keyboard::modifier_state_contains (ev->state, Keyboard::PrimaryModifier)) {
 602                         change_velocities (false, fine, allow_smush);
 603                 } else {
 604                         transpose (false, fine, allow_smush);
 605                 }
 606                 return true;
 607
 608         } else if (ev->keyval == GDK_Left) {
 609
 610                 nudge_notes (false);
 611                 return true;
 612
 613         } else if (ev->keyval == GDK_Right) {
 614
 615                 nudge_notes (true);
 616                 return true;
 617
 618         } else if (ev->keyval == GDK_Control_L) {
 619                 return true;
 620
 621         }
 622
 623         return false;
 624 }
 625
 626 bool
 627 MidiRegionView::key_release (GdkEventKey* ev)
 628 {
 629         if (ev->keyval == GDK_Alt_L || ev->keyval == GDK_Alt_R) {
 630                 _mouse_state = None;
 631                 return true;
 632         }
 633         return false;
 634 }
 635
 636 void
 637 MidiRegionView::show_list_editor ()
 638 {
 639         if (!_list_editor) {
 640                 _list_editor = new MidiListEditor (trackview.session(), midi_region());
 641         }
 642         _list_editor->present ();
 643 }
 644
 645 /** Add a note to the model, and the view, at a canvas (click) coordinate.
 646  * \param x horizontal position in pixels
 647  * \param y vertical position in pixels
 648  * \param length duration of the note in beats, which will be snapped to the grid
 649  * \param sh true to make the note 1 frame shorter than the snapped version of \a length.
 650  */
 651 void
 652 MidiRegionView::create_note_at(double x, double y, double length, bool sh)
 653 {
 654         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 655         MidiStreamView* const view = mtv->midi_view();
 656
 657         double note = midi_stream_view()->y_to_note(y);
 658
 659         assert(note >= 0.0);
 660         assert(note <= 127.0);
 661
 662         // Start of note in frames relative to region start
 663         nframes64_t const start_frames = snap_frame_to_frame(trackview.editor().pixel_to_frame(x));
 664         assert(start_frames >= 0);
 665
 666         // Snap length
 667         length = frames_to_beats(
 668                         snap_frame_to_frame(start_frames + beats_to_frames(length)) - start_frames);
 669
 670         assert (length != 0);
 671
 672         if (sh) {
 673                 length = frames_to_beats (beats_to_frames (length) - 1);
 674         }
 675
 676         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
 677         int chn_cnt = 0;
 678         uint8_t channel = 0;
 679
 680         /* pick the highest selected channel, unless all channels are selected,
 681            which is interpreted to mean channel 1 (zero)
 682         */
 683
 684         for (uint16_t i = 0; i < 16; ++i) {
 685                 if (chn_mask & (1<<i)) {
 686                         channel = i;
 687                         chn_cnt++;
 688                 }
 689         }
 690
 691         if (chn_cnt == 16) {
 692                 channel = 0;
 693         }
 694
 695         const boost::shared_ptr<NoteType> new_note (new NoteType (channel,
 696                                                                   frames_to_beats(start_frames + _region->start()), length,
 697                                                                   (uint8_t)note, 0x40));
 698
 699         if (_model->contains (new_note)) {
 700                 return;
 701         }
 702
 703         view->update_note_range(new_note->note());
 704
 705         MidiModel::DiffCommand* cmd = _model->new_diff_command("add note");
 706         cmd->add(new_note);
 707         _model->apply_command(*trackview.session(), cmd);
 708
 709         play_midi_note (new_note);
 710 }
 711
 712 void
 713 MidiRegionView::clear_events()
 714 {
 715         clear_selection();
 716
 717         MidiGhostRegion* gr;
 718         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 719                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 720                         gr->clear_events();
 721                 }
 722         }
 723
 724         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 725                 delete *i;
 726         }
 727
 728         _events.clear();
 729         _pgm_changes.clear();
 730         _sys_exes.clear();
 731         _optimization_iterator = _events.end();
 732 }
 733
 734
 735 void
 736 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 737 {
 738         _model = model;
 739         content_connection.disconnect ();
 740         _model->ContentsChanged.connect (content_connection, invalidator (*this), boost::bind (&MidiRegionView::redisplay_model, this), gui_context());
 741
 742         clear_events ();
 743
 744         if (_enable_display) {
 745                 redisplay_model();
 746         }
 747 }
 748
 749 void
 750 MidiRegionView::start_diff_command(string name)
 751 {
 752         if (!_diff_command) {
 753                 _diff_command = _model->new_diff_command(name);
 754         }
 755 }
 756
 757 void
 758 MidiRegionView::diff_add_note(const boost::shared_ptr<NoteType> note, bool selected, bool show_velocity)
 759 {
 760         if (_diff_command) {
 761                 _diff_command->add(note);
 762         }
 763         if (selected) {
 764                 _marked_for_selection.insert(note);
 765         }
 766         if (show_velocity) {
 767                 _marked_for_velocity.insert(note);
 768         }
 769 }
 770
 771 void
 772 MidiRegionView::diff_remove_note(ArdourCanvas::CanvasNoteEvent* ev)
 773 {
 774         if (_diff_command && ev->note()) {
 775                 _diff_command->remove(ev->note());
 776         }
 777 }
 778
 779 void
 780 MidiRegionView::diff_add_change (ArdourCanvas::CanvasNoteEvent* ev,
 781                                  MidiModel::DiffCommand::Property property,
 782                                  uint8_t val)
 783 {
 784         if (_diff_command) {
 785                 _diff_command->change (ev->note(), property, val);
 786         }
 787 }
 788
 789 void
 790 MidiRegionView::diff_add_change (ArdourCanvas::CanvasNoteEvent* ev,
 791                                  MidiModel::DiffCommand::Property property,
 792                                  Evoral::MusicalTime val)
 793 {
 794         if (_diff_command) {
 795                 _diff_command->change (ev->note(), property, val);
 796         }
 797 }
 798
 799 void
 800 MidiRegionView::apply_diff ()
 801 {
 802         bool add_or_remove;
 803
 804         if (!_diff_command) {
 805                 return;
 806         }
 807
 808         if ((add_or_remove = _diff_command->adds_or_removes())) {
 809                 // Mark all selected notes for selection when model reloads
 810                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 811                         _marked_for_selection.insert((*i)->note());
 812                 }
 813         }
 814
 815         _model->apply_command(*trackview.session(), _diff_command);
 816         _diff_command = 0;
 817         midi_view()->midi_track()->playlist_modified();
 818
 819         if (add_or_remove) {
 820                 _marked_for_selection.clear();
 821         }
 822
 823         _marked_for_velocity.clear();
 824 }
 825
 826 void
 827 MidiRegionView::apply_diff_as_subcommand()
 828 {
 829         bool add_or_remove;
 830
 831         if (!_diff_command) {
 832                 return;
 833         }
 834
 835         if ((add_or_remove = _diff_command->adds_or_removes())) {
 836                 // Mark all selected notes for selection when model reloads
 837                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 838                         _marked_for_selection.insert((*i)->note());
 839                 }
 840         }
 841
 842         _model->apply_command_as_subcommand(*trackview.session(), _diff_command);
 843         _diff_command = 0;
 844         midi_view()->midi_track()->playlist_modified();
 845
 846         if (add_or_remove) {
 847                 _marked_for_selection.clear();
 848         }
 849         _marked_for_velocity.clear();
 850 }
 851
 852
 853 void
 854 MidiRegionView::abort_command()
 855 {
 856         delete _diff_command;
 857         _diff_command = 0;
 858         clear_selection();
 859 }
 860
 861 CanvasNoteEvent*
 862 MidiRegionView::find_canvas_note (boost::shared_ptr<NoteType> note)
 863 {
 864         if (_optimization_iterator != _events.end()) {
 865                 ++_optimization_iterator;
 866         }
 867
 868         if (_optimization_iterator != _events.end() && (*_optimization_iterator)->note() == note) {
 869                 return *_optimization_iterator;
 870         }
 871
 872         for (_optimization_iterator = _events.begin(); _optimization_iterator != _events.end(); ++_optimization_iterator) {
 873                 if ((*_optimization_iterator)->note() == note) {
 874                         return *_optimization_iterator;
 875                 }
 876         }
 877
 878         return 0;
 879 }
 880
 881 void
 882 MidiRegionView::get_events (Events& e, Evoral::Sequence<Evoral::MusicalTime>::NoteOperator op, uint8_t val, int chan_mask)
 883 {
 884         MidiModel::Notes notes;
 885         _model->get_notes (notes, op, val, chan_mask);
 886
 887         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
 888                 CanvasNoteEvent* cne = find_canvas_note (*n);
 889                 if (cne) {
 890                         e.push_back (cne);
 891                 }
 892         }
 893 }
 894
 895 void
 896 MidiRegionView::redisplay_model()
 897 {
 898         // Don't redisplay the model if we're currently recording and displaying that
 899         if (_active_notes) {
 900                 return;
 901         }
 902
 903         if (!_model) {
 904                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
 905                 return;
 906         }
 907
 908         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 909                 (*i)->invalidate ();
 910         }
 911
 912         MidiModel::ReadLock lock(_model->read_lock());
 913
 914         MidiModel::Notes& notes (_model->notes());
 915         _optimization_iterator = _events.begin();
 916
 917         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
 918
 919                 boost::shared_ptr<NoteType> note (*n);
 920                 CanvasNoteEvent* cne;
 921                 bool visible;
 922
 923                 if (note_in_region_range (note, visible)) {
 924
 925                         if ((cne = find_canvas_note (note)) != 0) {
 926
 927                                 cne->validate ();
 928
 929                                 CanvasNote* cn;
 930                                 CanvasHit* ch;
 931
 932                                 if ((cn = dynamic_cast<CanvasNote*>(cne)) != 0) {
 933                                         update_note (cn);
 934                                 } else if ((ch = dynamic_cast<CanvasHit*>(cne)) != 0) {
 935                                         update_hit (ch);
 936                                 }
 937
 938                                 if (visible) {
 939                                         cne->show ();
 940                                 } else {
 941                                         cne->hide ();
 942                                 }
 943
 944                         } else {
 945
 946                                 add_note (note, visible);
 947                         }
 948
 949                 } else {
 950
 951                         if ((cne = find_canvas_note (note)) != 0) {
 952                                 cne->validate ();
 953                                 cne->hide ();
 954                         }
 955                 }
 956         }
 957
 958
 959         /* remove note items that are no longer valid */
 960
 961         for (Events::iterator i = _events.begin(); i != _events.end(); ) {
 962                 if (!(*i)->valid ()) {
 963                         delete *i;
 964                         i = _events.erase (i);
 965                 } else {
 966                         ++i;
 967                 }
 968         }
 969
 970         _pgm_changes.clear();
 971         _sys_exes.clear();
 972
 973         display_sysexes();
 974         display_program_changes();
 975
 976         _marked_for_selection.clear ();
 977         _marked_for_velocity.clear ();
 978
 979         /* we may have caused _events to contain things out of order (e.g. if a note
 980            moved earlier or later). we don't generally need them in time order, but
 981            make a note that a sort is required for those cases that require it.
 982         */
 983
 984         _sort_needed = true;
 985 }
 986
 987 void
 988 MidiRegionView::display_program_changes()
 989 {
 990         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 991         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
 992
 993         for (uint8_t i = 0; i < 16; ++i) {
 994                 if (chn_mask & (1<<i)) {
 995                         display_program_changes_on_channel (i);
 996                 }
 997         }
 998 }
 999
1000 void
1001 MidiRegionView::display_program_changes_on_channel(uint8_t channel)
1002 {
1003         boost::shared_ptr<Evoral::Control> control =
1004                 _model->control(Evoral::MIDI::ProgramChange (MidiPgmChangeAutomation, channel));
1005
1006         if (!control) {
1007                 return;
1008         }
1009
1010         Glib::Mutex::Lock lock (control->list()->lock());
1011
1012         for (AutomationList::const_iterator event = control->list()->begin();
1013                         event != control->list()->end(); ++event) {
1014                 double event_time     = (*event)->when;
1015                 double program_number = floor((*event)->value + 0.5);
1016
1017                 // Get current value of bank select MSB at time of the program change
1018                 Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1019                 boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1020                 uint8_t msb = 0;
1021                 if (msb_control != 0) {
1022                         msb = uint8_t(floor(msb_control->get_double(true, event_time) + 0.5));
1023                 }
1024
1025                 // Get current value of bank select LSB at time of the program change
1026                 Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1027                 boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1028                 uint8_t lsb = 0;
1029                 if (lsb_control != 0) {
1030                         lsb = uint8_t(floor(lsb_control->get_double(true, event_time) + 0.5));
1031                 }
1032
1033                 MIDI::Name::PatchPrimaryKey patch_key(msb, lsb, program_number);
1034
1035                 boost::shared_ptr<MIDI::Name::Patch> patch =
1036                         MIDI::Name::MidiPatchManager::instance().find_patch(
1037                                         _model_name, _custom_device_mode, channel, patch_key);
1038
1039                 PCEvent program_change(event_time, uint8_t(program_number), channel);
1040
1041                 if (patch != 0) {
1042                         add_pgm_change(program_change, patch->name());
1043                 } else {
1044                         char buf[4];
1045                         // program_number is zero-based: convert to one-based
1046                         snprintf(buf, 4, "%d", int(program_number+1));
1047                         add_pgm_change(program_change, buf);
1048                 }
1049         }
1050 }
1051
1052 void
1053 MidiRegionView::display_sysexes()
1054 {
1055         for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
1056                 Evoral::MusicalTime time = (*i)->time();
1057                 assert(time >= 0);
1058
1059                 ostringstream str;
1060                 str << hex;
1061                 for (uint32_t b = 0; b < (*i)->size(); ++b) {
1062                         str << int((*i)->buffer()[b]);
1063                         if (b != (*i)->size() -1) {
1064                                 str << " ";
1065                         }
1066                 }
1067                 string text = str.str();
1068
1069                 ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1070
1071                 const double x = trackview.editor().frame_to_pixel(beats_to_frames(time));
1072
1073                 double height = midi_stream_view()->contents_height();
1074
1075                 boost::shared_ptr<CanvasSysEx> sysex = boost::shared_ptr<CanvasSysEx>(
1076                                 new CanvasSysEx(*this, *group, text, height, x, 1.0));
1077
1078                 // Show unless program change is beyond the region bounds
1079                 if (time - _region->start() >= _region->length() || time < _region->start()) {
1080                         sysex->hide();
1081                 } else {
1082                         sysex->show();
1083                 }
1084
1085                 _sys_exes.push_back(sysex);
1086         }
1087 }
1088
1089
1090 MidiRegionView::~MidiRegionView ()
1091 {
1092         in_destructor = true;
1093
1094         trackview.editor().hide_verbose_canvas_cursor ();
1095
1096         note_delete_connection.disconnect ();
1097
1098         delete _list_editor;
1099
1100         RegionViewGoingAway (this); /* EMIT_SIGNAL */
1101
1102         if (_active_notes) {
1103                 end_write();
1104         }
1105
1106         _selection.clear();
1107         clear_events();
1108
1109         delete _note_group;
1110         delete _diff_command;
1111         delete _step_edit_cursor;
1112 }
1113
1114 void
1115 MidiRegionView::region_resized (const PropertyChange& what_changed)
1116 {
1117         RegionView::region_resized(what_changed);
1118
1119         if (what_changed.contains (ARDOUR::Properties::position)) {
1120                 set_duration(_region->length(), 0);
1121                 if (_enable_display) {
1122                         redisplay_model();
1123                 }
1124         }
1125 }
1126
1127 void
1128 MidiRegionView::reset_width_dependent_items (double pixel_width)
1129 {
1130         RegionView::reset_width_dependent_items(pixel_width);
1131         assert(_pixel_width == pixel_width);
1132
1133         if (_enable_display) {
1134                 redisplay_model();
1135         }
1136
1137         move_step_edit_cursor (_step_edit_cursor_position);
1138         set_step_edit_cursor_width (_step_edit_cursor_width);
1139 }
1140
1141 void
1142 MidiRegionView::set_height (double height)
1143 {
1144         static const double FUDGE = 2.0;
1145         const double old_height = _height;
1146         RegionView::set_height(height);
1147         _height = height - FUDGE;
1148
1149         apply_note_range(midi_stream_view()->lowest_note(),
1150                          midi_stream_view()->highest_note(),
1151                          height != old_height + FUDGE);
1152
1153         if (name_pixbuf) {
1154                 name_pixbuf->raise_to_top();
1155         }
1156
1157         for (PgmChanges::iterator x = _pgm_changes.begin(); x != _pgm_changes.end(); ++x) {
1158                 (*x)->set_height (midi_stream_view()->contents_height());
1159         }
1160
1161         if (_step_edit_cursor) {
1162                 _step_edit_cursor->property_y2() = midi_stream_view()->contents_height();
1163         }
1164 }
1165
1166
1167 /** Apply the current note range from the stream view
1168  * by repositioning/hiding notes as necessary
1169  */
1170 void
1171 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
1172 {
1173         if (!_enable_display) {
1174                 return;
1175         }
1176
1177         if (!force && _current_range_min == min && _current_range_max == max) {
1178                 return;
1179         }
1180
1181         _current_range_min = min;
1182         _current_range_max = max;
1183
1184         for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
1185                 CanvasNoteEvent* event = *i;
1186                 boost::shared_ptr<NoteType> note (event->note());
1187
1188                 if (note->note() < _current_range_min ||
1189                     note->note() > _current_range_max) {
1190                         event->hide();
1191                 } else {
1192                         event->show();
1193                 }
1194
1195                 if (CanvasNote* cnote = dynamic_cast<CanvasNote*>(event)) {
1196
1197                         const double y1 = midi_stream_view()->note_to_y(note->note());
1198                         const double y2 = y1 + floor(midi_stream_view()->note_height());
1199
1200                         cnote->property_y1() = y1;
1201                         cnote->property_y2() = y2;
1202
1203                 } else if (CanvasHit* chit = dynamic_cast<CanvasHit*>(event)) {
1204
1205                         double x = trackview.editor().frame_to_pixel(
1206                                 beats_to_frames(note->time()) - _region->start());
1207                         const double diamond_size = midi_stream_view()->note_height() / 2.0;
1208                         double y = midi_stream_view()->note_to_y(event->note()->note())
1209                                 + ((diamond_size-2.0) / 4.0);
1210
1211                         chit->set_height (diamond_size);
1212                         chit->move (x - chit->x1(), y - chit->y1());
1213                         chit->show ();
1214                 }
1215         }
1216 }
1217
1218 GhostRegion*
1219 MidiRegionView::add_ghost (TimeAxisView& tv)
1220 {
1221         CanvasNote* note;
1222
1223         double unit_position = _region->position () / samples_per_unit;
1224         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
1225         MidiGhostRegion* ghost;
1226
1227         if (mtv && mtv->midi_view()) {
1228                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group
1229                    to allow having midi notes on top of note lines and waveforms.
1230                  */
1231                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
1232         } else {
1233                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
1234         }
1235
1236         ghost->set_height ();
1237         ghost->set_duration (_region->length() / samples_per_unit);
1238         ghosts.push_back (ghost);
1239
1240         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1241                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
1242                         ghost->add_note(note);
1243                 }
1244         }
1245
1246         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&RegionView::remove_ghost, this, _1), gui_context());
1247
1248         return ghost;
1249 }
1250
1251
1252 /** Begin tracking note state for successive calls to add_event
1253  */
1254 void
1255 MidiRegionView::begin_write()
1256 {
1257         assert(!_active_notes);
1258         _active_notes = new CanvasNote*[128];
1259         for (unsigned i=0; i < 128; ++i) {
1260                 _active_notes[i] = 0;
1261         }
1262 }
1263
1264
1265 /** Destroy note state for add_event
1266  */
1267 void
1268 MidiRegionView::end_write()
1269 {
1270         delete[] _active_notes;
1271         _active_notes = 0;
1272         _marked_for_selection.clear();
1273         _marked_for_velocity.clear();
1274 }
1275
1276
1277 /** Resolve an active MIDI note (while recording).
1278  */
1279 void
1280 MidiRegionView::resolve_note(uint8_t note, double end_time)
1281 {
1282         if (midi_view()->note_mode() != Sustained) {
1283                 return;
1284         }
1285
1286         if (_active_notes && _active_notes[note]) {
1287                 const nframes64_t end_time_frames = beats_to_frames(end_time);
1288                 _active_notes[note]->property_x2() = trackview.editor().frame_to_pixel(end_time_frames);
1289                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
1290                 _active_notes[note] = 0;
1291         }
1292 }
1293
1294
1295 /** Extend active notes to rightmost edge of region (if length is changed)
1296  */
1297 void
1298 MidiRegionView::extend_active_notes()
1299 {
1300         if (!_active_notes) {
1301                 return;
1302         }
1303
1304         for (unsigned i=0; i < 128; ++i) {
1305                 if (_active_notes[i]) {
1306                         _active_notes[i]->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1307                 }
1308         }
1309 }
1310
1311 void
1312 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
1313 {
1314         if (no_sound_notes || !trackview.editor().sound_notes()) {
1315                 return;
1316         }
1317
1318         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1319         assert(route_ui);
1320
1321         route_ui->midi_track()->write_immediate_event(
1322                         note->on_event().size(), note->on_event().buffer());
1323
1324         const double note_length_beats = (note->off_event().time() - note->on_event().time());
1325         nframes_t note_length_ms = beats_to_frames(note_length_beats)
1326                         * (1000 / (double)route_ui->session()->nominal_frame_rate());
1327         Glib::signal_timeout().connect(sigc::bind(sigc::mem_fun(this, &MidiRegionView::play_midi_note_off), note),
1328                         note_length_ms, G_PRIORITY_DEFAULT);
1329 }
1330
1331 bool
1332 MidiRegionView::play_midi_note_off(boost::shared_ptr<NoteType> note)
1333 {
1334         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
1335         assert(route_ui);
1336
1337         route_ui->midi_track()->write_immediate_event(
1338                         note->off_event().size(), note->off_event().buffer());
1339
1340         return false;
1341 }
1342
1343 bool
1344 MidiRegionView::note_in_region_range(const boost::shared_ptr<NoteType> note, bool& visible) const
1345 {
1346         const nframes64_t note_start_frames = beats_to_frames(note->time());
1347
1348         bool outside = (note_start_frames - _region->start() >= _region->length()) ||
1349                 (note_start_frames < _region->start());
1350
1351         visible = (note->note() >= midi_stream_view()->lowest_note()) &&
1352                 (note->note() <= midi_stream_view()->highest_note());
1353
1354         return !outside;
1355 }
1356
1357 void
1358 MidiRegionView::update_note (CanvasNote* ev)
1359 {
1360         boost::shared_ptr<NoteType> note = ev->note();
1361
1362         const nframes64_t note_start_frames = beats_to_frames(note->time());
1363
1364         /* trim note display to not overlap the end of its region */
1365         const nframes64_t note_end_frames = min (beats_to_frames (note->end_time()), _region->start() + _region->length());
1366
1367         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1368         const double y1 = midi_stream_view()->note_to_y(note->note());
1369         const double note_endpixel = trackview.editor().frame_to_pixel(note_end_frames - _region->start());
1370
1371         ev->property_x1() = x;
1372         ev->property_y1() = y1;
1373         if (note->length() > 0) {
1374                 ev->property_x2() = note_endpixel;
1375         } else {
1376                 ev->property_x2() = trackview.editor().frame_to_pixel(_region->length());
1377         }
1378         ev->property_y2() = y1 + floor(midi_stream_view()->note_height());
1379
1380         if (note->length() == 0) {
1381                 if (_active_notes) {
1382                         assert(note->note() < 128);
1383                         // If this note is already active there's a stuck note,
1384                         // finish the old note rectangle
1385                         if (_active_notes[note->note()]) {
1386                                 CanvasNote* const old_rect = _active_notes[note->note()];
1387                                 boost::shared_ptr<NoteType> old_note = old_rect->note();
1388                                 old_rect->property_x2() = x;
1389                                 old_rect->property_outline_what() = (guint32) 0xF;
1390                         }
1391                         _active_notes[note->note()] = ev;
1392                 }
1393                 /* outline all but right edge */
1394                 ev->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
1395         } else {
1396                 /* outline all edges */
1397                 ev->property_outline_what() = (guint32) 0xF;
1398         }
1399 }
1400
1401 void
1402 MidiRegionView::update_hit (CanvasHit* ev)
1403 {
1404         boost::shared_ptr<NoteType> note = ev->note();
1405
1406         const nframes64_t note_start_frames = beats_to_frames(note->time());
1407         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
1408         const double diamond_size = midi_stream_view()->note_height() / 2.0;
1409         const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
1410
1411         ev->move_to (x, y);
1412 }
1413
1414 /** Add a MIDI note to the view (with length).
1415  *
1416  * If in sustained mode, notes with length 0 will be considered active
1417  * notes, and resolve_note should be called when the corresponding note off
1418  * event arrives, to properly display the note.
1419  */
1420 void
1421 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note, bool visible)
1422 {
1423         CanvasNoteEvent* event = 0;
1424
1425         assert(note->time() >= 0);
1426         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
1427
1428         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1429
1430         if (midi_view()->note_mode() == Sustained) {
1431
1432                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
1433
1434                 update_note (ev_rect);
1435
1436                 event = ev_rect;
1437
1438                 MidiGhostRegion* gr;
1439
1440                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
1441                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
1442                                 gr->add_note(ev_rect);
1443                         }
1444                 }
1445
1446         } else if (midi_view()->note_mode() == Percussive) {
1447
1448                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
1449
1450                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
1451
1452                 update_hit (ev_diamond);
1453
1454                 event = ev_diamond;
1455
1456         } else {
1457                 event = 0;
1458         }
1459
1460         if (event) {
1461                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
1462                         note_selected(event, true);
1463                 }
1464
1465                 if (_marked_for_velocity.find(note) != _marked_for_velocity.end()) {
1466                         event->show_velocity();
1467                 }
1468                 event->on_channel_selection_change(_last_channel_selection);
1469                 _events.push_back(event);
1470
1471                 if (visible) {
1472                         event->show();
1473                 } else {
1474                         event->hide ();
1475                 }
1476         }
1477 }
1478
1479 void
1480 MidiRegionView::step_add_note (uint8_t channel, uint8_t number, uint8_t velocity,
1481                                Evoral::MusicalTime pos, Evoral::MusicalTime len)
1482 {
1483         boost::shared_ptr<NoteType> new_note (new NoteType (channel, pos, len, number, velocity));
1484
1485         /* potentially extend region to hold new note */
1486
1487         nframes64_t end_frame = _region->position() + beats_to_frames (new_note->end_time());
1488         nframes64_t region_end = _region->position() + _region->length() - 1;
1489
1490         if (end_frame > region_end) {
1491                 _region->set_length (end_frame - _region->position(), this);
1492         }
1493
1494         _marked_for_selection.clear ();
1495         clear_selection ();
1496
1497         start_diff_command (_("step add"));
1498         diff_add_note (new_note, true, false);
1499         apply_diff();
1500
1501         // last_step_edit_note = new_note;
1502 }
1503
1504 void
1505 MidiRegionView::step_sustain (Evoral::MusicalTime beats)
1506 {
1507         change_note_lengths (false, false, beats, false, true);
1508 }
1509
1510 void
1511 MidiRegionView::add_pgm_change(PCEvent& program, const string& displaytext)
1512 {
1513         assert(program.time >= 0);
1514
1515         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1516         const double x = trackview.editor().frame_to_pixel(beats_to_frames(program.time));
1517
1518         double height = midi_stream_view()->contents_height();
1519
1520         boost::shared_ptr<CanvasProgramChange> pgm_change = boost::shared_ptr<CanvasProgramChange>(
1521                         new CanvasProgramChange(*this, *group,
1522                                         displaytext,
1523                                         height,
1524                                         x, 1.0,
1525                                         _model_name,
1526                                         _custom_device_mode,
1527                                         program.time, program.channel, program.value));
1528
1529         // Show unless program change is beyond the region bounds
1530         if (program.time - _region->start() >= _region->length() || program.time < _region->start()) {
1531                 pgm_change->hide();
1532         } else {
1533                 pgm_change->show();
1534         }
1535
1536         _pgm_changes.push_back(pgm_change);
1537 }
1538
1539 void
1540 MidiRegionView::get_patch_key_at(double time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1541 {
1542         Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1543         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1544         double msb = 0.0;
1545         if (msb_control != 0) {
1546                 msb = int(msb_control->get_double(true, time));
1547         }
1548
1549         Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1550         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1551         double lsb = 0.0;
1552         if (lsb_control != 0) {
1553                 lsb = lsb_control->get_double(true, time);
1554         }
1555
1556         Evoral::Parameter program_change(MidiPgmChangeAutomation, channel, 0);
1557         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1558         double program_number = -1.0;
1559         if (program_control != 0) {
1560                 program_number = program_control->get_double(true, time);
1561         }
1562
1563         key.msb = (int) floor(msb + 0.5);
1564         key.lsb = (int) floor(lsb + 0.5);
1565         key.program_number = (int) floor(program_number + 0.5);
1566         assert(key.is_sane());
1567 }
1568
1569
1570 void
1571 MidiRegionView::alter_program_change(PCEvent& old_program, const MIDI::Name::PatchPrimaryKey& new_patch)
1572 {
1573         // TODO: Get the real event here and alter them at the original times
1574         Evoral::Parameter bank_select_msb(MidiCCAutomation, old_program.channel, MIDI_CTL_MSB_BANK);
1575         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1576         if (msb_control != 0) {
1577                 msb_control->set_double(double(new_patch.msb), true, old_program.time);
1578         }
1579
1580         // TODO: Get the real event here and alter them at the original times
1581         Evoral::Parameter bank_select_lsb(MidiCCAutomation, old_program.channel, MIDI_CTL_LSB_BANK);
1582         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1583         if (lsb_control != 0) {
1584                 lsb_control->set_double(double(new_patch.lsb), true, old_program.time);
1585         }
1586
1587         Evoral::Parameter program_change(MidiPgmChangeAutomation, old_program.channel, 0);
1588         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1589
1590         assert(program_control != 0);
1591         program_control->set_double(float(new_patch.program_number), true, old_program.time);
1592
1593         _pgm_changes.clear ();
1594         display_program_changes (); // XXX would be nice to limit to just old_program.channel
1595 }
1596
1597 void
1598 MidiRegionView::program_selected(CanvasProgramChange& program, const MIDI::Name::PatchPrimaryKey& new_patch)
1599 {
1600         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1601         alter_program_change(program_change_event, new_patch);
1602 }
1603
1604 void
1605 MidiRegionView::previous_program(CanvasProgramChange& program)
1606 {
1607         if (program.program() < 127) {
1608                 MIDI::Name::PatchPrimaryKey key;
1609                 get_patch_key_at(program.event_time(), program.channel(), key);
1610                 PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1611
1612                 key.program_number++;
1613                 alter_program_change(program_change_event, key);
1614         }
1615 }
1616
1617 void
1618 MidiRegionView::next_program(CanvasProgramChange& program)
1619 {
1620         if (program.program() > 0) {
1621                 MIDI::Name::PatchPrimaryKey key;
1622                 get_patch_key_at(program.event_time(), program.channel(), key);
1623                 PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1624
1625                 key.program_number--;
1626                 alter_program_change(program_change_event, key);
1627         }
1628 }
1629
1630 void
1631 MidiRegionView::maybe_remove_deleted_note_from_selection (CanvasNoteEvent* cne)
1632 {
1633         if (_selection.empty()) {
1634                 return;
1635         }
1636
1637         if (_selection.erase (cne) > 0) {
1638                 cerr << "Erased a CNE from selection\n";
1639         }
1640 }
1641
1642 void
1643 MidiRegionView::delete_selection()
1644 {
1645         if (_selection.empty()) {
1646                 return;
1647         }
1648
1649         start_diff_command (_("delete selection"));
1650
1651         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1652                 if ((*i)->selected()) {
1653                         _diff_command->remove((*i)->note());
1654                 }
1655         }
1656
1657         _selection.clear();
1658
1659         apply_diff ();
1660 }
1661
1662 void
1663 MidiRegionView::delete_note (boost::shared_ptr<NoteType> n)
1664 {
1665         start_diff_command (_("delete note"));
1666         _diff_command->remove (n);
1667         apply_diff ();
1668
1669         trackview.editor().hide_verbose_canvas_cursor ();
1670 }
1671
1672 void
1673 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1674 {
1675         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1676                 if ((*i)->selected() && (*i) != ev) {
1677                         (*i)->set_selected(false);
1678                         (*i)->hide_velocity();
1679                 }
1680         }
1681
1682         _selection.clear();
1683 }
1684
1685 void
1686 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1687 {
1688         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
1689                 if ((*i) != ev) {
1690
1691                         Selection::iterator tmp = i;
1692                         ++tmp;
1693
1694                         (*i)->set_selected (false);
1695                         _selection.erase (i);
1696
1697                         i = tmp;
1698
1699                 } else {
1700                         ++i;
1701                 }
1702         }
1703
1704         /* don't bother with removing this regionview from the editor selection,
1705            since we're about to add another note, and thus put/keep this
1706            regionview in the editor selection.
1707         */
1708
1709         if (!ev->selected()) {
1710                 add_to_selection (ev);
1711         }
1712 }
1713
1714 void
1715 MidiRegionView::select_matching_notes (uint8_t notenum, uint16_t channel_mask, bool add, bool extend)
1716 {
1717         uint8_t low_note = 127;
1718         uint8_t high_note = 0;
1719         MidiModel::Notes& notes (_model->notes());
1720         _optimization_iterator = _events.begin();
1721
1722         if (!add) {
1723                 clear_selection ();
1724         }
1725
1726         if (extend && _selection.empty()) {
1727                 extend = false;
1728         }
1729
1730         if (extend) {
1731
1732                 /* scan existing selection to get note range */
1733
1734                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1735                         if ((*i)->note()->note() < low_note) {
1736                                 low_note = (*i)->note()->note();
1737                         }
1738                         if ((*i)->note()->note() > high_note) {
1739                                 high_note = (*i)->note()->note();
1740                         }
1741                 }
1742
1743                 low_note = min (low_note, notenum);
1744                 high_note = max (high_note, notenum);
1745         }
1746
1747         no_sound_notes = true;
1748
1749         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1750
1751                 boost::shared_ptr<NoteType> note (*n);
1752                 CanvasNoteEvent* cne;
1753                 bool select = false;
1754
1755                 if (((1 << note->channel()) & channel_mask) != 0) {
1756                         if (extend) {
1757                                 if ((note->note() >= low_note && note->note() <= high_note)) {
1758                                         select = true;
1759                                 }
1760                         } else if (note->note() == notenum) {
1761                                 select = true;
1762                         }
1763                 }
1764
1765                 if (select) {
1766                         if ((cne = find_canvas_note (note)) != 0) {
1767                                 // extend is false because we've taken care of it,
1768                                 // since it extends by time range, not pitch.
1769                                 note_selected (cne, add, false);
1770                         }
1771                 }
1772
1773                 add = true; // we need to add all remaining matching notes, even if the passed in value was false (for "set")
1774
1775         }
1776
1777         no_sound_notes = false;
1778 }
1779
1780 void
1781 MidiRegionView::toggle_matching_notes (uint8_t notenum, uint16_t channel_mask)
1782 {
1783         MidiModel::Notes& notes (_model->notes());
1784         _optimization_iterator = _events.begin();
1785
1786         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1787
1788                 boost::shared_ptr<NoteType> note (*n);
1789                 CanvasNoteEvent* cne;
1790
1791                 if (note->note() == notenum && (((0x0001 << note->channel()) & channel_mask) != 0)) {
1792                         if ((cne = find_canvas_note (note)) != 0) {
1793                                 if (cne->selected()) {
1794                                         note_deselected (cne);
1795                                 } else {
1796                                         note_selected (cne, true, false);
1797                                 }
1798                         }
1799                 }
1800         }
1801 }
1802
1803 void
1804 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add, bool extend)
1805 {
1806         if (!add) {
1807                 clear_selection_except(ev);
1808         }
1809
1810         if (!extend) {
1811
1812                 if (!ev->selected()) {
1813                         add_to_selection (ev);
1814                 }
1815
1816         } else {
1817                 /* find end of latest note selected, select all between that and the start of "ev" */
1818
1819                 Evoral::MusicalTime earliest = DBL_MAX;
1820                 Evoral::MusicalTime latest = 0;
1821
1822                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1823                         if ((*i)->note()->end_time() > latest) {
1824                                 latest = (*i)->note()->end_time();
1825                         }
1826                         if ((*i)->note()->time() < earliest) {
1827                                 earliest = (*i)->note()->time();
1828                         }
1829                 }
1830
1831                 if (ev->note()->end_time() > latest) {
1832                         latest = ev->note()->end_time();
1833                 }
1834
1835                 if (ev->note()->time() < earliest) {
1836                         earliest = ev->note()->time();
1837                 }
1838
1839                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1840
1841                         /* find notes entirely within OR spanning the earliest..latest range */
1842
1843                         if (((*i)->note()->time() >= earliest && (*i)->note()->end_time() <= latest) ||
1844                             ((*i)->note()->time() <= earliest && (*i)->note()->end_time() >= latest)) {
1845                                 add_to_selection (*i);
1846                         }
1847
1848 #if 0
1849                         /* if events were guaranteed to be time sorted, we could do this.
1850                            but as of sept 10th 2009, they no longer are.
1851                         */
1852
1853                         if ((*i)->note()->time() > latest) {
1854                                 break;
1855                         }
1856 #endif
1857                 }
1858         }
1859 }
1860
1861 void
1862 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev)
1863 {
1864         remove_from_selection (ev);
1865 }
1866
1867 void
1868 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
1869 {
1870         if (x1 > x2) {
1871                 swap (x1, x2);
1872         }
1873
1874         if (y1 > y2) {
1875                 swap (y1, y2);
1876         }
1877
1878         // TODO: Make this faster by storing the last updated selection rect, and only
1879         // adjusting things that are in the area that appears/disappeared.
1880         // We probably need a tree to be able to find events in O(log(n)) time.
1881
1882         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1883
1884                 /* check if any corner of the note is inside the rect
1885
1886                    Notes:
1887                      1) this is computing "touched by", not "contained by" the rect.
1888                      2) this does not require that events be sorted in time.
1889                  */
1890
1891                 const double ix1 = (*i)->x1();
1892                 const double ix2 = (*i)->x2();
1893                 const double iy1 = (*i)->y1();
1894                 const double iy2 = (*i)->y2();
1895
1896                 if ((ix1 >= x1 && ix1 <= x2 && iy1 >= y1 && iy1 <= y2) ||
1897                     (ix1 >= x1 && ix1 <= x2 && iy2 >= y1 && iy2 <= y2) ||
1898                     (ix2 >= x1 && ix2 <= x2 && iy1 >= y1 && iy1 <= y2) ||
1899                     (ix2 >= x1 && ix2 <= x2 && iy2 >= y1 && iy2 <= y2)) {
1900
1901                         // Inside rectangle
1902                         if (!(*i)->selected()) {
1903                                 add_to_selection (*i);
1904                         }
1905                 } else if ((*i)->selected()) {
1906                         // Not inside rectangle
1907                         remove_from_selection (*i);
1908                 }
1909         }
1910 }
1911
1912 void
1913 MidiRegionView::remove_from_selection (CanvasNoteEvent* ev)
1914 {
1915         Selection::iterator i = _selection.find (ev);
1916
1917         if (i != _selection.end()) {
1918                 _selection.erase (i);
1919         }
1920
1921         ev->set_selected (false);
1922         ev->hide_velocity ();
1923
1924         if (_selection.empty()) {
1925                 PublicEditor& editor (trackview.editor());
1926                 editor.get_selection().remove (this);
1927         }
1928 }
1929
1930 void
1931 MidiRegionView::add_to_selection (CanvasNoteEvent* ev)
1932 {
1933         bool add_mrv_selection = false;
1934
1935         if (_selection.empty()) {
1936                 add_mrv_selection = true;
1937         }
1938
1939         if (_selection.insert (ev).second) {
1940                 ev->set_selected (true);
1941                 play_midi_note ((ev)->note());
1942         }
1943
1944         if (add_mrv_selection) {
1945                 PublicEditor& editor (trackview.editor());
1946                 editor.get_selection().add (this);
1947         }
1948 }
1949
1950 void
1951 MidiRegionView::move_selection(double dx, double dy)
1952 {
1953         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1954                 (*i)->move_event(dx, dy);
1955         }
1956 }
1957
1958 void
1959 MidiRegionView::note_dropped(CanvasNoteEvent *, double dt, int8_t dnote)
1960 {
1961         assert (!_selection.empty());
1962
1963         uint8_t lowest_note_in_selection  = 127;
1964         uint8_t highest_note_in_selection = 0;
1965         uint8_t highest_note_difference = 0;
1966
1967         // find highest and lowest notes first
1968
1969         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1970                 uint8_t pitch = (*i)->note()->note();
1971                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
1972                 highest_note_in_selection = std::max(highest_note_in_selection, pitch);
1973         }
1974
1975         /*
1976         cerr << "dnote: " << (int) dnote << endl;
1977         cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
1978              << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
1979         cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
1980              << int(highest_note_in_selection) << endl;
1981         cerr << "selection size: " << _selection.size() << endl;
1982         cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
1983         */
1984
1985         // Make sure the note pitch does not exceed the MIDI standard range
1986         if (highest_note_in_selection + dnote > 127) {
1987                 highest_note_difference = highest_note_in_selection - 127;
1988         }
1989
1990         start_diff_command(_("move notes"));
1991
1992         for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ++i) {
1993
1994                 nframes64_t start_frames = beats_to_frames((*i)->note()->time());
1995
1996                 if (dt >= 0) {
1997                         start_frames += snap_frame_to_frame(trackview.editor().pixel_to_frame(dt));
1998                 } else {
1999                         start_frames -= snap_frame_to_frame(trackview.editor().pixel_to_frame(-dt));
2000                 }
2001
2002                 Evoral::MusicalTime new_time = frames_to_beats(start_frames);
2003
2004                 if (new_time < 0) {
2005                         continue;
2006                 }
2007
2008                 diff_add_change (*i, MidiModel::DiffCommand::StartTime, new_time);
2009
2010                 uint8_t original_pitch = (*i)->note()->note();
2011                 uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
2012
2013                 // keep notes in standard midi range
2014                 clamp_to_0_127(new_pitch);
2015
2016                 // keep original pitch if note is dragged outside valid midi range
2017                 if ((original_pitch != 0 && new_pitch == 0)
2018                                 || (original_pitch != 127 && new_pitch == 127)) {
2019                         new_pitch = original_pitch;
2020                 }
2021
2022                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
2023                 highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
2024
2025                 diff_add_change (*i, MidiModel::DiffCommand::NoteNumber, new_pitch);
2026         }
2027
2028         apply_diff();
2029
2030         // care about notes being moved beyond the upper/lower bounds on the canvas
2031         if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
2032             highest_note_in_selection > midi_stream_view()->highest_note()) {
2033                 midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
2034         }
2035 }
2036
2037 nframes64_t
2038 MidiRegionView::snap_pixel_to_frame(double x)
2039 {
2040         PublicEditor& editor = trackview.editor();
2041         // x is region relative, convert it to global absolute frames
2042         nframes64_t frame = editor.pixel_to_frame(x) + _region->position();
2043         editor.snap_to(frame);
2044         return frame - _region->position(); // convert back to region relative
2045 }
2046
2047 nframes64_t
2048 MidiRegionView::snap_frame_to_frame(nframes64_t x)
2049 {
2050         PublicEditor& editor = trackview.editor();
2051         // x is region relative, convert it to global absolute frames
2052         nframes64_t frame = x + _region->position();
2053         editor.snap_to(frame);
2054         return frame - _region->position(); // convert back to region relative
2055 }
2056
2057 double
2058 MidiRegionView::snap_to_pixel(double x)
2059 {
2060         return (double) trackview.editor().frame_to_pixel(snap_pixel_to_frame(x));
2061 }
2062
2063 double
2064 MidiRegionView::get_position_pixels()
2065 {
2066         nframes64_t region_frame = get_position();
2067         return trackview.editor().frame_to_pixel(region_frame);
2068 }
2069
2070 double
2071 MidiRegionView::get_end_position_pixels()
2072 {
2073         nframes64_t frame = get_position() + get_duration ();
2074         return trackview.editor().frame_to_pixel(frame);
2075 }
2076
2077 nframes64_t
2078 MidiRegionView::beats_to_frames(double beats) const
2079 {
2080         return _time_converter.to(beats);
2081 }
2082
2083 double
2084 MidiRegionView::frames_to_beats(nframes64_t frames) const
2085 {
2086         return _time_converter.from(frames);
2087 }
2088
2089 void
2090 MidiRegionView::begin_resizing (bool /*at_front*/)
2091 {
2092         _resize_data.clear();
2093
2094         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2095                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
2096
2097                 // only insert CanvasNotes into the map
2098                 if (note) {
2099                         NoteResizeData *resize_data = new NoteResizeData();
2100                         resize_data->canvas_note = note;
2101
2102                         // create a new SimpleRect from the note which will be the resize preview
2103                         SimpleRect *resize_rect = new SimpleRect(
2104                                         *group, note->x1(), note->y1(), note->x2(), note->y2());
2105
2106                         // calculate the colors: get the color settings
2107                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
2108                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
2109                                         128);
2110
2111                         // make the resize preview notes more transparent and bright
2112                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
2113
2114                         // calculate color based on note velocity
2115                         resize_rect->property_fill_color_rgba() = UINT_INTERPOLATE(
2116                                 CanvasNoteEvent::meter_style_fill_color(note->note()->velocity(), note->selected()),
2117                                         fill_color,
2118                                         0.85);
2119
2120                         resize_rect->property_outline_color_rgba() = CanvasNoteEvent::calculate_outline(
2121                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
2122
2123                         resize_data->resize_rect = resize_rect;
2124                         _resize_data.push_back(resize_data);
2125                 }
2126         }
2127 }
2128
2129 /** Update resizing notes while user drags.
2130  * @param primary `primary' note for the drag; ie the one that is used as the reference in non-relative mode.
2131  * @param at_front which end of the note (true == note on, false == note off)
2132  * @param delta_x change in mouse position since the start of the drag
2133  * @param relative true if relative resizing is taking place, false if absolute resizing.  This only makes
2134  * a difference when multiple notes are being resized; in relative mode, each note's length is changed by the
2135  * amount of the drag.  In non-relative mode, all selected notes are set to have the same start or end point
2136  * as the \a primary note.
2137  */
2138 void
2139 MidiRegionView::update_resizing (ArdourCanvas::CanvasNote* primary, bool at_front, double delta_x, bool relative)
2140 {
2141         bool cursor_set = false;
2142
2143         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2144                 SimpleRect* resize_rect = (*i)->resize_rect;
2145                 CanvasNote* canvas_note = (*i)->canvas_note;
2146                 double current_x;
2147
2148                 if (at_front) {
2149                         if (relative) {
2150                                 current_x = canvas_note->x1() + delta_x;
2151                         } else {
2152                                 current_x = primary->x1() + delta_x;
2153                         }
2154                 } else {
2155                         if (relative) {
2156                                 current_x = canvas_note->x2() + delta_x;
2157                         } else {
2158                                 current_x = primary->x2() + delta_x;
2159                         }
2160                 }
2161
2162                 if (at_front) {
2163                         resize_rect->property_x1() = snap_to_pixel(current_x);
2164                         resize_rect->property_x2() = canvas_note->x2();
2165                 } else {
2166                         resize_rect->property_x2() = snap_to_pixel(current_x);
2167                         resize_rect->property_x1() = canvas_note->x1();
2168                 }
2169
2170                 if (!cursor_set) {
2171                         double beats;
2172
2173                         beats = snap_pixel_to_frame (current_x);
2174                         beats = frames_to_beats (beats);
2175
2176                         double len;
2177
2178                         if (at_front) {
2179                                 if (beats < canvas_note->note()->end_time()) {
2180                                         len = canvas_note->note()->time() - beats;
2181                                         len += canvas_note->note()->length();
2182                                 } else {
2183                                         len = 0;
2184                                 }
2185                         } else {
2186                                 if (beats >= canvas_note->note()->end_time()) {
2187                                         len = beats - canvas_note->note()->time();
2188                                 } else {
2189                                         len = 0;
2190                                 }
2191                         }
2192
2193                         char buf[16];
2194                         snprintf (buf, sizeof (buf), "%.3g beats", len);
2195                         trackview.editor().show_verbose_canvas_cursor_with (buf);
2196
2197                         cursor_set = true;
2198                 }
2199
2200         }
2201 }
2202
2203
2204 /** Finish resizing notes when the user releases the mouse button.
2205  *  Parameters the same as for \a update_resizing().
2206  */
2207 void
2208 MidiRegionView::commit_resizing (ArdourCanvas::CanvasNote* primary, bool at_front, double delta_x, bool relative)
2209 {
2210         start_diff_command(_("resize notes"));
2211
2212         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2213                 CanvasNote*  canvas_note = (*i)->canvas_note;
2214                 SimpleRect*  resize_rect = (*i)->resize_rect;
2215                 double current_x;
2216
2217                 if (at_front) {
2218                         if (relative) {
2219                                 current_x = canvas_note->x1() + delta_x;
2220                         } else {
2221                                 current_x = primary->x1() + delta_x;
2222                         }
2223                 } else {
2224                         if (relative) {
2225                                 current_x = canvas_note->x2() + delta_x;
2226                         } else {
2227                                 current_x = primary->x2() + delta_x;
2228                         }
2229                 }
2230
2231                 current_x = snap_pixel_to_frame (current_x);
2232                 current_x = frames_to_beats (current_x);
2233
2234                 if (at_front && current_x < canvas_note->note()->end_time()) {
2235                         diff_add_change (canvas_note, MidiModel::DiffCommand::StartTime, current_x);
2236
2237                         double len = canvas_note->note()->time() - current_x;
2238                         len += canvas_note->note()->length();
2239
2240                         if (len > 0) {
2241                                 /* XXX convert to beats */
2242                                 diff_add_change (canvas_note, MidiModel::DiffCommand::Length, len);
2243                         }
2244                 }
2245
2246                 if (!at_front) {
2247                         double len = current_x - canvas_note->note()->time();
2248
2249                         if (len > 0) {
2250                                 /* XXX convert to beats */
2251                                 diff_add_change (canvas_note, MidiModel::DiffCommand::Length, len);
2252                         }
2253                 }
2254
2255                 delete resize_rect;
2256                 delete (*i);
2257         }
2258
2259         _resize_data.clear();
2260         apply_diff();
2261 }
2262
2263 void
2264 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
2265 {
2266         uint8_t new_velocity;
2267
2268         if (relative) {
2269                 new_velocity = event->note()->velocity() + velocity;
2270                 clamp_to_0_127(new_velocity);
2271         } else {
2272                 new_velocity = velocity;
2273         }
2274
2275         event->set_selected (event->selected()); // change color
2276
2277         diff_add_change (event, MidiModel::DiffCommand::Velocity, new_velocity);
2278 }
2279
2280 void
2281 MidiRegionView::change_note_note (CanvasNoteEvent* event, int8_t note, bool relative)
2282 {
2283         uint8_t new_note;
2284
2285         if (relative) {
2286                 new_note = event->note()->note() + note;
2287         } else {
2288                 new_note = note;
2289         }
2290
2291         clamp_to_0_127 (new_note);
2292         diff_add_change (event, MidiModel::DiffCommand::NoteNumber, new_note);
2293 }
2294
2295 void
2296 MidiRegionView::trim_note (CanvasNoteEvent* event, Evoral::MusicalTime front_delta, Evoral::MusicalTime end_delta)
2297 {
2298         bool change_start = false;
2299         bool change_length = false;
2300         Evoral::MusicalTime new_start = 0;
2301         Evoral::MusicalTime new_length = 0;
2302
2303         /* NOTE: the semantics of the two delta arguments are slightly subtle:
2304
2305            front_delta: if positive - move the start of the note later in time (shortening it)
2306                         if negative - move the start of the note earlier in time (lengthening it)
2307
2308            end_delta:   if positive - move the end of the note later in time (lengthening it)
2309                         if negative - move the end of the note earlier in time (shortening it)
2310          */
2311
2312         if (front_delta) {
2313                 if (front_delta < 0) {
2314
2315                         if (event->note()->time() < -front_delta) {
2316                                 new_start = 0;
2317                         } else {
2318                                 new_start = event->note()->time() + front_delta; // moves earlier
2319                         }
2320
2321                         /* start moved toward zero, so move the end point out to where it used to be.
2322                            Note that front_delta is negative, so this increases the length.
2323                         */
2324
2325                         new_length = event->note()->length() - front_delta;
2326                         change_start = true;
2327                         change_length = true;
2328
2329                 } else {
2330
2331                         Evoral::MusicalTime new_pos = event->note()->time() + front_delta;
2332
2333                         if (new_pos < event->note()->end_time()) {
2334                                 new_start = event->note()->time() + front_delta;
2335                                 /* start moved toward the end, so move the end point back to where it used to be */
2336                                 new_length = event->note()->length() - front_delta;
2337                                 change_start = true;
2338                                 change_length = true;
2339                         }
2340                 }
2341
2342         }
2343
2344         if (end_delta) {
2345                 bool can_change = true;
2346                 if (end_delta < 0) {
2347                         if (event->note()->length() < -end_delta) {
2348                                 can_change = false;
2349                         }
2350                 }
2351
2352                 if (can_change) {
2353                         new_length = event->note()->length() + end_delta;
2354                         change_length = true;
2355                 }
2356         }
2357
2358         if (change_start) {
2359                 diff_add_change (event, MidiModel::DiffCommand::StartTime, new_start);
2360         }
2361
2362         if (change_length) {
2363                 diff_add_change (event, MidiModel::DiffCommand::Length, new_length);
2364         }
2365 }
2366
2367 void
2368 MidiRegionView::change_note_time (CanvasNoteEvent* event, Evoral::MusicalTime delta, bool relative)
2369 {
2370         Evoral::MusicalTime new_time;
2371
2372         if (relative) {
2373                 if (delta < 0.0) {
2374                         if (event->note()->time() < -delta) {
2375                                 new_time = 0;
2376                         } else {
2377                                 new_time = event->note()->time() + delta;
2378                         }
2379                 } else {
2380                         new_time = event->note()->time() + delta;
2381                 }
2382         } else {
2383                 new_time = delta;
2384         }
2385
2386         diff_add_change (event, MidiModel::DiffCommand::StartTime, new_time);
2387 }
2388
2389 void
2390 MidiRegionView::change_velocities (bool up, bool fine, bool allow_smush)
2391 {
2392         int8_t delta;
2393
2394         if (_selection.empty()) {
2395                 return;
2396         }
2397
2398         if (fine) {
2399                 delta = 1;
2400         } else {
2401                 delta = 10;
2402         }
2403
2404         if (!up) {
2405                 delta = -delta;
2406         }
2407
2408         if (!allow_smush) {
2409                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2410                         if ((*i)->note()->velocity() + delta == 0 || (*i)->note()->velocity() + delta == 127) {
2411                                 return;
2412                         }
2413                 }
2414         }
2415
2416         start_diff_command(_("change velocities"));
2417
2418         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
2419                 Selection::iterator next = i;
2420                 ++next;
2421                 change_note_velocity (*i, delta, true);
2422                 i = next;
2423         }
2424
2425         apply_diff();
2426
2427         if (!_selection.empty()) {
2428                 char buf[24];
2429                 snprintf (buf, sizeof (buf), "Vel %d",
2430                           (int) (*_selection.begin())->note()->velocity());
2431                 trackview.editor().show_verbose_canvas_cursor_with (buf);
2432         }
2433 }
2434
2435
2436 void
2437 MidiRegionView::transpose (bool up, bool fine, bool allow_smush)
2438 {
2439         if (_selection.empty()) {
2440                 return;
2441         }
2442
2443         int8_t delta;
2444
2445         if (fine) {
2446                 delta = 1;
2447         } else {
2448                 delta = 12;
2449         }
2450
2451         if (!up) {
2452                 delta = -delta;
2453         }
2454
2455         if (!allow_smush) {
2456                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2457                         if (!up) {
2458                                 if ((int8_t) (*i)->note()->note() + delta <= 0) {
2459                                         return;
2460                                 }
2461                         } else {
2462                                 if ((int8_t) (*i)->note()->note() + delta > 127) {
2463                                         return;
2464                                 }
2465                         }
2466                 }
2467         }
2468
2469         start_diff_command (_("transpose"));
2470
2471         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2472                 Selection::iterator next = i;
2473                 ++next;
2474                 change_note_note (*i, delta, true);
2475                 i = next;
2476         }
2477
2478         apply_diff ();
2479 }
2480
2481 void
2482 MidiRegionView::change_note_lengths (bool fine, bool shorter, Evoral::MusicalTime delta, bool start, bool end)
2483 {
2484         if (delta == 0.0) {
2485                 if (fine) {
2486                         delta = 1.0/128.0;
2487                 } else {
2488                         /* grab the current grid distance */
2489                         bool success;
2490                         delta = trackview.editor().get_grid_type_as_beats (success, _region->position());
2491                         if (!success) {
2492                                 /* XXX cannot get grid type as beats ... should always be possible ... FIX ME */
2493                                 cerr << "Grid type not available as beats - TO BE FIXED\n";
2494                                 return;
2495                         }
2496                 }
2497         }
2498
2499         if (shorter) {
2500                 delta = -delta;
2501         }
2502
2503         start_diff_command (_("change note lengths"));
2504
2505         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2506                 Selection::iterator next = i;
2507                 ++next;
2508
2509                 /* note the negation of the delta for start */
2510
2511                 trim_note (*i, (start ? -delta : 0), (end ? delta : 0));
2512                 i = next;
2513         }
2514
2515         apply_diff ();
2516
2517 }
2518
2519 void
2520 MidiRegionView::nudge_notes (bool forward)
2521 {
2522         if (_selection.empty()) {
2523                 return;
2524         }
2525
2526         /* pick a note as the point along the timeline to get the nudge distance.
2527            its not necessarily the earliest note, so we may want to pull the notes out
2528            into a vector and sort before using the first one.
2529         */
2530
2531         nframes64_t ref_point = _region->position() + beats_to_frames ((*(_selection.begin()))->note()->time());
2532         nframes64_t unused;
2533         nframes64_t distance;
2534
2535         if (trackview.editor().snap_mode() == Editing::SnapOff) {
2536
2537                 /* grid is off - use nudge distance */
2538
2539                 distance = trackview.editor().get_nudge_distance (ref_point, unused);
2540
2541         } else {
2542
2543                 /* use grid */
2544
2545                 nframes64_t next_pos = ref_point;
2546
2547                 if (forward) {
2548                         /* XXX need check on max_frames, but that needs max_frames64 or something */
2549                         next_pos += 1;
2550                 } else {
2551                         if (next_pos == 0) {
2552                                 return;
2553                         }
2554                         next_pos -= 1;
2555                 }
2556
2557                 trackview.editor().snap_to (next_pos, (forward ? 1 : -1), false);
2558                 distance = ref_point - next_pos;
2559         }
2560
2561         if (distance == 0) {
2562                 return;
2563         }
2564
2565         Evoral::MusicalTime delta = frames_to_beats (fabs (distance));
2566
2567         if (!forward) {
2568                 delta = -delta;
2569         }
2570
2571         start_diff_command (_("nudge"));
2572
2573         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2574                 Selection::iterator next = i;
2575                 ++next;
2576                 change_note_time (*i, delta, true);
2577                 i = next;
2578         }
2579
2580         apply_diff ();
2581 }
2582
2583 void
2584 MidiRegionView::change_channel(uint8_t channel)
2585 {
2586         start_diff_command(_("change channel"));
2587         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2588                 diff_add_change (*i, MidiModel::DiffCommand::Channel, channel);
2589         }
2590
2591         apply_diff();
2592 }
2593
2594
2595 void
2596 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
2597 {
2598         if (_mouse_state == SelectTouchDragging) {
2599                 note_selected (ev, true);
2600         }
2601
2602         show_verbose_canvas_cursor (ev->note ());
2603 }
2604
2605 void
2606 MidiRegionView::note_left (ArdourCanvas::CanvasNoteEvent* note)
2607 {
2608         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2609                 (*i)->hide_velocity ();
2610         }
2611
2612         trackview.editor().hide_verbose_canvas_cursor ();
2613 }
2614
2615 void
2616 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
2617 {
2618         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
2619         if (msrc)
2620                 display_model(msrc->model());
2621 }
2622
2623 void
2624 MidiRegionView::set_frame_color()
2625 {
2626         if (frame) {
2627                 if (_selected && should_show_selection) {
2628                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
2629                 } else {
2630                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
2631                 }
2632         }
2633 }
2634
2635 void
2636 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
2637 {
2638         switch (mode) {
2639         case AllChannels:
2640         case FilterChannels:
2641                 _force_channel = -1;
2642                 break;
2643         case ForceChannel:
2644                 _force_channel = mask;
2645                 mask = 0xFFFF; // Show all notes as active (below)
2646         };
2647
2648         // Update notes for selection
2649         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2650                 (*i)->on_channel_selection_change(mask);
2651         }
2652
2653         _last_channel_selection = mask;
2654 }
2655
2656 void
2657 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
2658 {
2659         _model_name         = model;
2660         _custom_device_mode = custom_device_mode;
2661         redisplay_model();
2662 }
2663
2664 void
2665 MidiRegionView::cut_copy_clear (Editing::CutCopyOp op)
2666 {
2667         if (_selection.empty()) {
2668                 return;
2669         }
2670
2671         PublicEditor& editor (trackview.editor());
2672
2673         switch (op) {
2674         case Cut:
2675         case Copy:
2676                 editor.get_cut_buffer().add (selection_as_cut_buffer());
2677                 break;
2678         default:
2679                 break;
2680         }
2681
2682         if (op != Copy) {
2683
2684                 start_diff_command();
2685
2686                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2687                         switch (op) {
2688                         case Copy:
2689                                 break;
2690                         case Cut:
2691                         case Clear:
2692                                 diff_remove_note (*i);
2693                                 break;
2694                         }
2695                 }
2696
2697                 apply_diff();
2698         }
2699 }
2700
2701 MidiCutBuffer*
2702 MidiRegionView::selection_as_cut_buffer () const
2703 {
2704         Notes notes;
2705
2706         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2707                 NoteType* n = (*i)->note().get();
2708                 notes.insert (boost::shared_ptr<NoteType> (new NoteType (*n)));
2709         }
2710
2711         MidiCutBuffer* cb = new MidiCutBuffer (trackview.session());
2712         cb->set (notes);
2713
2714         return cb;
2715 }
2716
2717 void
2718 MidiRegionView::paste (nframes64_t pos, float times, const MidiCutBuffer& mcb)
2719 {
2720         if (mcb.empty()) {
2721                 return;
2722         }
2723
2724         start_diff_command (_("paste"));
2725
2726         Evoral::MusicalTime beat_delta;
2727         Evoral::MusicalTime paste_pos_beats;
2728         Evoral::MusicalTime duration;
2729         Evoral::MusicalTime end_point = 0;
2730
2731         duration = (*mcb.notes().rbegin())->end_time() - (*mcb.notes().begin())->time();
2732         paste_pos_beats = frames_to_beats (pos - _region->position());
2733         beat_delta = (*mcb.notes().begin())->time() - paste_pos_beats;
2734         paste_pos_beats = 0;
2735
2736         _selection.clear ();
2737
2738         for (int n = 0; n < (int) times; ++n) {
2739
2740                 for (Notes::const_iterator i = mcb.notes().begin(); i != mcb.notes().end(); ++i) {
2741
2742                         boost::shared_ptr<NoteType> copied_note (new NoteType (*((*i).get())));
2743                         copied_note->set_time (paste_pos_beats + copied_note->time() - beat_delta);
2744
2745                         /* make all newly added notes selected */
2746
2747                         diff_add_note (copied_note, true);
2748                         end_point = copied_note->end_time();
2749                 }
2750
2751                 paste_pos_beats += duration;
2752         }
2753
2754         /* if we pasted past the current end of the region, extend the region */
2755
2756         nframes64_t end_frame = _region->position() + beats_to_frames (end_point);
2757         nframes64_t region_end = _region->position() + _region->length() - 1;
2758
2759         if (end_frame > region_end) {
2760
2761                 trackview.session()->begin_reversible_command (_("paste"));
2762
2763                 _region->clear_history ();
2764                 _region->set_length (end_frame, this);
2765                 trackview.session()->add_command (new StatefulDiffCommand (_region));
2766         }
2767
2768         apply_diff ();
2769 }
2770
2771 struct EventNoteTimeEarlyFirstComparator {
2772     bool operator() (CanvasNoteEvent* a, CanvasNoteEvent* b) {
2773             return a->note()->time() < b->note()->time();
2774     }
2775 };
2776
2777 void
2778 MidiRegionView::time_sort_events ()
2779 {
2780         if (!_sort_needed) {
2781                 return;
2782         }
2783
2784         EventNoteTimeEarlyFirstComparator cmp;
2785         _events.sort (cmp);
2786
2787         _sort_needed = false;
2788 }
2789
2790 void
2791 MidiRegionView::goto_next_note ()
2792 {
2793         // nframes64_t pos = -1;
2794         bool use_next = false;
2795
2796         if (_events.back()->selected()) {
2797                 return;
2798         }
2799
2800         time_sort_events ();
2801
2802         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2803                 if ((*i)->selected()) {
2804                         use_next = true;
2805                         continue;
2806                 } else if (use_next) {
2807                         unique_select (*i);
2808                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
2809                         return;
2810                 }
2811         }
2812
2813         /* use the first one */
2814
2815         unique_select (_events.front());
2816
2817 }
2818
2819 void
2820 MidiRegionView::goto_previous_note ()
2821 {
2822         // nframes64_t pos = -1;
2823         bool use_next = false;
2824
2825         if (_events.front()->selected()) {
2826                 return;
2827         }
2828
2829         time_sort_events ();
2830
2831         for (Events::reverse_iterator i = _events.rbegin(); i != _events.rend(); ++i) {
2832                 if ((*i)->selected()) {
2833                         use_next = true;
2834                         continue;
2835                 } else if (use_next) {
2836                         unique_select (*i);
2837                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
2838                         return;
2839                 }
2840         }
2841
2842         /* use the last one */
2843
2844         unique_select (*(_events.rbegin()));
2845 }
2846
2847 void
2848 MidiRegionView::selection_as_notelist (Notes& selected, bool allow_all_if_none_selected)
2849 {
2850         bool had_selected = false;
2851
2852         time_sort_events ();
2853
2854         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2855                 if ((*i)->selected()) {
2856                         selected.insert ((*i)->note());
2857                         had_selected = true;
2858                 }
2859         }
2860
2861         if (allow_all_if_none_selected && !had_selected) {
2862                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2863                         selected.insert ((*i)->note());
2864                 }
2865         }
2866 }
2867
2868 void
2869 MidiRegionView::update_ghost_note (double x, double y)
2870 {
2871         _last_ghost_x = x;
2872         _last_ghost_y = y;
2873
2874         group->w2i (x, y);
2875         nframes64_t f = trackview.editor().pixel_to_frame (x) + _region->position ();
2876         trackview.editor().snap_to (f);
2877         f -= _region->position ();
2878
2879         bool success;
2880         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, f);
2881         if (!success) {
2882                 beats = 1;
2883         }
2884
2885         double length = frames_to_beats (snap_frame_to_frame (f + beats_to_frames (beats)) - f);
2886
2887         _ghost_note->note()->set_time (frames_to_beats (f + _region->start()));
2888         _ghost_note->note()->set_length (length);
2889         _ghost_note->note()->set_note (midi_stream_view()->y_to_note (y));
2890
2891         update_note (_ghost_note);
2892
2893         show_verbose_canvas_cursor (_ghost_note->note ());
2894 }
2895
2896 void
2897 MidiRegionView::create_ghost_note (double x, double y)
2898 {
2899         delete _ghost_note;
2900         _ghost_note = 0;
2901
2902         boost::shared_ptr<NoteType> g (new NoteType);
2903         _ghost_note = new NoEventCanvasNote (*this, *group, g);
2904         update_ghost_note (x, y);
2905         _ghost_note->show ();
2906
2907         _last_ghost_x = x;
2908         _last_ghost_y = y;
2909
2910         show_verbose_canvas_cursor (_ghost_note->note ());
2911 }
2912
2913 void
2914 MidiRegionView::snap_changed ()
2915 {
2916         if (!_ghost_note) {
2917                 return;
2918         }
2919
2920         create_ghost_note (_last_ghost_x, _last_ghost_y);
2921 }
2922
2923 void
2924 MidiRegionView::show_verbose_canvas_cursor (boost::shared_ptr<NoteType> n) const
2925 {
2926         char buf[24];
2927         snprintf (buf, sizeof (buf), "%s (%d)\nVel %d",
2928                   Evoral::midi_note_name (n->note()).c_str(),
2929                   (int) n->note (),
2930                   (int) n->velocity());
2931         trackview.editor().show_verbose_canvas_cursor_with (buf);
2932 }
2933
2934 void
2935 MidiRegionView::drop_down_keys ()
2936 {
2937         _mouse_state = None;
2938 }
2939
2940 void
2941 MidiRegionView::maybe_select_by_position (GdkEventButton* ev, double x, double y)
2942 {
2943         double note = midi_stream_view()->y_to_note(y);
2944         Events e;
2945         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
2946
2947         cerr << "Selecting by position\n";
2948
2949         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
2950
2951         if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
2952                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchGreaterThanOrEqual, (uint8_t) floor (note), chn_mask);
2953         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
2954                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchLessThanOrEqual, (uint8_t) floor (note), chn_mask);
2955         } else {
2956                 return;
2957         }
2958
2959         bool add_mrv_selection = false;
2960
2961         if (_selection.empty()) {
2962                 add_mrv_selection = true;
2963         }
2964
2965         for (Events::iterator i = e.begin(); i != e.end(); ++i) {
2966                 if (_selection.insert (*i).second) {
2967                         (*i)->set_selected (true);
2968                 }
2969         }
2970
2971         if (add_mrv_selection) {
2972                 PublicEditor& editor (trackview.editor());
2973                 editor.get_selection().add (this);
2974         }
2975 }
2976
2977 void
2978 MidiRegionView::color_handler ()
2979 {
2980         RegionView::color_handler ();
2981
2982         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2983                 (*i)->set_selected ((*i)->selected()); // will change color
2984         }
2985
2986         /* XXX probably more to do here */
2987 }
2988
2989 void
2990 MidiRegionView::enable_display (bool yn)
2991 {
2992         RegionView::enable_display (yn);
2993         if (yn) {
2994                 redisplay_model ();
2995         }
2996 }
2997
2998 void
2999 MidiRegionView::show_step_edit_cursor (Evoral::MusicalTime pos)
3000 {
3001         if (_step_edit_cursor == 0) {
3002                 ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
3003
3004                 _step_edit_cursor = new ArdourCanvas::SimpleRect (*group);
3005                 _step_edit_cursor->property_y1() = 0;
3006                 _step_edit_cursor->property_y2() = midi_stream_view()->contents_height();
3007                 _step_edit_cursor->property_fill_color_rgba() = RGBA_TO_UINT (45,0,0,90);
3008                 _step_edit_cursor->property_outline_color_rgba() = RGBA_TO_UINT (85,0,0,90);
3009         }
3010
3011         move_step_edit_cursor (pos);
3012         _step_edit_cursor->show ();
3013 }
3014
3015 void
3016 MidiRegionView::move_step_edit_cursor (Evoral::MusicalTime pos)
3017 {
3018         _step_edit_cursor_position = pos;
3019
3020         if (_step_edit_cursor) {
3021                 double pixel = trackview.editor().frame_to_pixel (beats_to_frames (pos));
3022                 _step_edit_cursor->property_x1() = pixel;
3023                 set_step_edit_cursor_width (_step_edit_cursor_width);
3024         }
3025 }
3026
3027 void
3028 MidiRegionView::hide_step_edit_cursor ()
3029 {
3030         if (_step_edit_cursor) {
3031                 _step_edit_cursor->hide ();
3032         }
3033 }
3034
3035 void
3036 MidiRegionView::set_step_edit_cursor_width (Evoral::MusicalTime beats)
3037 {
3038         _step_edit_cursor_width = beats;
3039
3040         if (_step_edit_cursor) {
3041                 _step_edit_cursor->property_x2() = _step_edit_cursor->property_x1() + trackview.editor().frame_to_pixel (beats_to_frames (beats));
3042         }
3043 }
3044