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, 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::add_pgm_change(PCEvent& program, const string& displaytext)
1506 {
1507         assert(program.time >= 0);
1508
1509         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1510         const double x = trackview.editor().frame_to_pixel(beats_to_frames(program.time));
1511
1512         double height = midi_stream_view()->contents_height();
1513
1514         boost::shared_ptr<CanvasProgramChange> pgm_change = boost::shared_ptr<CanvasProgramChange>(
1515                         new CanvasProgramChange(*this, *group,
1516                                         displaytext,
1517                                         height,
1518                                         x, 1.0,
1519                                         _model_name,
1520                                         _custom_device_mode,
1521                                         program.time, program.channel, program.value));
1522
1523         // Show unless program change is beyond the region bounds
1524         if (program.time - _region->start() >= _region->length() || program.time < _region->start()) {
1525                 pgm_change->hide();
1526         } else {
1527                 pgm_change->show();
1528         }
1529
1530         _pgm_changes.push_back(pgm_change);
1531 }
1532
1533 void
1534 MidiRegionView::get_patch_key_at(double time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1535 {
1536         Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1537         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1538         double msb = 0.0;
1539         if (msb_control != 0) {
1540                 msb = int(msb_control->get_double(true, time));
1541         }
1542
1543         Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1544         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1545         double lsb = 0.0;
1546         if (lsb_control != 0) {
1547                 lsb = lsb_control->get_double(true, time);
1548         }
1549
1550         Evoral::Parameter program_change(MidiPgmChangeAutomation, channel, 0);
1551         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1552         double program_number = -1.0;
1553         if (program_control != 0) {
1554                 program_number = program_control->get_double(true, time);
1555         }
1556
1557         key.msb = (int) floor(msb + 0.5);
1558         key.lsb = (int) floor(lsb + 0.5);
1559         key.program_number = (int) floor(program_number + 0.5);
1560         assert(key.is_sane());
1561 }
1562
1563
1564 void
1565 MidiRegionView::alter_program_change(PCEvent& old_program, const MIDI::Name::PatchPrimaryKey& new_patch)
1566 {
1567         // TODO: Get the real event here and alter them at the original times
1568         Evoral::Parameter bank_select_msb(MidiCCAutomation, old_program.channel, MIDI_CTL_MSB_BANK);
1569         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1570         if (msb_control != 0) {
1571                 msb_control->set_double(double(new_patch.msb), true, old_program.time);
1572         }
1573
1574         // TODO: Get the real event here and alter them at the original times
1575         Evoral::Parameter bank_select_lsb(MidiCCAutomation, old_program.channel, MIDI_CTL_LSB_BANK);
1576         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1577         if (lsb_control != 0) {
1578                 lsb_control->set_double(double(new_patch.lsb), true, old_program.time);
1579         }
1580
1581         Evoral::Parameter program_change(MidiPgmChangeAutomation, old_program.channel, 0);
1582         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1583
1584         assert(program_control != 0);
1585         program_control->set_double(float(new_patch.program_number), true, old_program.time);
1586
1587         _pgm_changes.clear ();
1588         display_program_changes (); // XXX would be nice to limit to just old_program.channel
1589 }
1590
1591 void
1592 MidiRegionView::program_selected(CanvasProgramChange& program, const MIDI::Name::PatchPrimaryKey& new_patch)
1593 {
1594         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1595         alter_program_change(program_change_event, new_patch);
1596 }
1597
1598 void
1599 MidiRegionView::previous_program(CanvasProgramChange& program)
1600 {
1601         if (program.program() < 127) {
1602                 MIDI::Name::PatchPrimaryKey key;
1603                 get_patch_key_at(program.event_time(), program.channel(), key);
1604                 PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1605
1606                 key.program_number++;
1607                 alter_program_change(program_change_event, key);
1608         }
1609 }
1610
1611 void
1612 MidiRegionView::next_program(CanvasProgramChange& program)
1613 {
1614         if (program.program() > 0) {
1615                 MIDI::Name::PatchPrimaryKey key;
1616                 get_patch_key_at(program.event_time(), program.channel(), key);
1617                 PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1618
1619                 key.program_number--;
1620                 alter_program_change(program_change_event, key);
1621         }
1622 }
1623
1624 void
1625 MidiRegionView::maybe_remove_deleted_note_from_selection (CanvasNoteEvent* cne)
1626 {
1627         if (_selection.empty()) {
1628                 return;
1629         }
1630
1631         if (_selection.erase (cne) > 0) {
1632                 cerr << "Erased a CNE from selection\n";
1633         }
1634 }
1635
1636 void
1637 MidiRegionView::delete_selection()
1638 {
1639         if (_selection.empty()) {
1640                 return;
1641         }
1642
1643         start_diff_command (_("delete selection"));
1644
1645         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1646                 if ((*i)->selected()) {
1647                         _diff_command->remove((*i)->note());
1648                 }
1649         }
1650
1651         _selection.clear();
1652
1653         apply_diff ();
1654 }
1655
1656 void
1657 MidiRegionView::delete_note (boost::shared_ptr<NoteType> n)
1658 {
1659         start_diff_command (_("delete note"));
1660         _diff_command->remove (n);
1661         apply_diff ();
1662
1663         trackview.editor().hide_verbose_canvas_cursor ();
1664 }
1665
1666 void
1667 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1668 {
1669         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1670                 if ((*i)->selected() && (*i) != ev) {
1671                         (*i)->set_selected(false);
1672                         (*i)->hide_velocity();
1673                 }
1674         }
1675
1676         _selection.clear();
1677 }
1678
1679 void
1680 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1681 {
1682         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
1683                 if ((*i) != ev) {
1684
1685                         Selection::iterator tmp = i;
1686                         ++tmp;
1687
1688                         (*i)->set_selected (false);
1689                         _selection.erase (i);
1690
1691                         i = tmp;
1692
1693                 } else {
1694                         ++i;
1695                 }
1696         }
1697
1698         /* don't bother with removing this regionview from the editor selection,
1699            since we're about to add another note, and thus put/keep this
1700            regionview in the editor selection.
1701         */
1702
1703         if (!ev->selected()) {
1704                 add_to_selection (ev);
1705         }
1706 }
1707
1708 void
1709 MidiRegionView::select_matching_notes (uint8_t notenum, uint16_t channel_mask, bool add, bool extend)
1710 {
1711         uint8_t low_note = 127;
1712         uint8_t high_note = 0;
1713         MidiModel::Notes& notes (_model->notes());
1714         _optimization_iterator = _events.begin();
1715
1716         if (!add) {
1717                 clear_selection ();
1718         }
1719
1720         if (extend && _selection.empty()) {
1721                 extend = false;
1722         }
1723
1724         if (extend) {
1725
1726                 /* scan existing selection to get note range */
1727
1728                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1729                         if ((*i)->note()->note() < low_note) {
1730                                 low_note = (*i)->note()->note();
1731                         }
1732                         if ((*i)->note()->note() > high_note) {
1733                                 high_note = (*i)->note()->note();
1734                         }
1735                 }
1736
1737                 low_note = min (low_note, notenum);
1738                 high_note = max (high_note, notenum);
1739         }
1740
1741         no_sound_notes = true;
1742
1743         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1744
1745                 boost::shared_ptr<NoteType> note (*n);
1746                 CanvasNoteEvent* cne;
1747                 bool select = false;
1748
1749                 if (((1 << note->channel()) & channel_mask) != 0) {
1750                         if (extend) {
1751                                 if ((note->note() >= low_note && note->note() <= high_note)) {
1752                                         select = true;
1753                                 }
1754                         } else if (note->note() == notenum) {
1755                                 select = true;
1756                         }
1757                 }
1758
1759                 if (select) {
1760                         if ((cne = find_canvas_note (note)) != 0) {
1761                                 // extend is false because we've taken care of it,
1762                                 // since it extends by time range, not pitch.
1763                                 note_selected (cne, add, false);
1764                         }
1765                 }
1766
1767                 add = true; // we need to add all remaining matching notes, even if the passed in value was false (for "set")
1768
1769         }
1770
1771         no_sound_notes = false;
1772 }
1773
1774 void
1775 MidiRegionView::toggle_matching_notes (uint8_t notenum, uint16_t channel_mask)
1776 {
1777         MidiModel::Notes& notes (_model->notes());
1778         _optimization_iterator = _events.begin();
1779
1780         for (MidiModel::Notes::iterator n = notes.begin(); n != notes.end(); ++n) {
1781
1782                 boost::shared_ptr<NoteType> note (*n);
1783                 CanvasNoteEvent* cne;
1784
1785                 if (note->note() == notenum && (((0x0001 << note->channel()) & channel_mask) != 0)) {
1786                         if ((cne = find_canvas_note (note)) != 0) {
1787                                 if (cne->selected()) {
1788                                         note_deselected (cne);
1789                                 } else {
1790                                         note_selected (cne, true, false);
1791                                 }
1792                         }
1793                 }
1794         }
1795 }
1796
1797 void
1798 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add, bool extend)
1799 {
1800         if (!add) {
1801                 clear_selection_except(ev);
1802         }
1803
1804         if (!extend) {
1805
1806                 if (!ev->selected()) {
1807                         add_to_selection (ev);
1808                 }
1809
1810         } else {
1811                 /* find end of latest note selected, select all between that and the start of "ev" */
1812
1813                 Evoral::MusicalTime earliest = DBL_MAX;
1814                 Evoral::MusicalTime latest = 0;
1815
1816                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1817                         if ((*i)->note()->end_time() > latest) {
1818                                 latest = (*i)->note()->end_time();
1819                         }
1820                         if ((*i)->note()->time() < earliest) {
1821                                 earliest = (*i)->note()->time();
1822                         }
1823                 }
1824
1825                 if (ev->note()->end_time() > latest) {
1826                         latest = ev->note()->end_time();
1827                 }
1828
1829                 if (ev->note()->time() < earliest) {
1830                         earliest = ev->note()->time();
1831                 }
1832
1833                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1834
1835                         /* find notes entirely within OR spanning the earliest..latest range */
1836
1837                         if (((*i)->note()->time() >= earliest && (*i)->note()->end_time() <= latest) ||
1838                             ((*i)->note()->time() <= earliest && (*i)->note()->end_time() >= latest)) {
1839                                 add_to_selection (*i);
1840                         }
1841
1842 #if 0
1843                         /* if events were guaranteed to be time sorted, we could do this.
1844                            but as of sept 10th 2009, they no longer are.
1845                         */
1846
1847                         if ((*i)->note()->time() > latest) {
1848                                 break;
1849                         }
1850 #endif
1851                 }
1852         }
1853 }
1854
1855 void
1856 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev)
1857 {
1858         remove_from_selection (ev);
1859 }
1860
1861 void
1862 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
1863 {
1864         if (x1 > x2) {
1865                 swap (x1, x2);
1866         }
1867
1868         if (y1 > y2) {
1869                 swap (y1, y2);
1870         }
1871
1872         // TODO: Make this faster by storing the last updated selection rect, and only
1873         // adjusting things that are in the area that appears/disappeared.
1874         // We probably need a tree to be able to find events in O(log(n)) time.
1875
1876         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1877
1878                 /* check if any corner of the note is inside the rect
1879
1880                    Notes:
1881                      1) this is computing "touched by", not "contained by" the rect.
1882                      2) this does not require that events be sorted in time.
1883                  */
1884
1885                 const double ix1 = (*i)->x1();
1886                 const double ix2 = (*i)->x2();
1887                 const double iy1 = (*i)->y1();
1888                 const double iy2 = (*i)->y2();
1889
1890                 if ((ix1 >= x1 && ix1 <= x2 && iy1 >= y1 && iy1 <= y2) ||
1891                     (ix1 >= x1 && ix1 <= x2 && iy2 >= y1 && iy2 <= y2) ||
1892                     (ix2 >= x1 && ix2 <= x2 && iy1 >= y1 && iy1 <= y2) ||
1893                     (ix2 >= x1 && ix2 <= x2 && iy2 >= y1 && iy2 <= y2)) {
1894
1895                         // Inside rectangle
1896                         if (!(*i)->selected()) {
1897                                 add_to_selection (*i);
1898                         }
1899                 } else if ((*i)->selected()) {
1900                         // Not inside rectangle
1901                         remove_from_selection (*i);
1902                 }
1903         }
1904 }
1905
1906 void
1907 MidiRegionView::remove_from_selection (CanvasNoteEvent* ev)
1908 {
1909         Selection::iterator i = _selection.find (ev);
1910
1911         if (i != _selection.end()) {
1912                 _selection.erase (i);
1913         }
1914
1915         ev->set_selected (false);
1916         ev->hide_velocity ();
1917
1918         if (_selection.empty()) {
1919                 PublicEditor& editor (trackview.editor());
1920                 editor.get_selection().remove (this);
1921         }
1922 }
1923
1924 void
1925 MidiRegionView::add_to_selection (CanvasNoteEvent* ev)
1926 {
1927         bool add_mrv_selection = false;
1928
1929         if (_selection.empty()) {
1930                 add_mrv_selection = true;
1931         }
1932
1933         if (_selection.insert (ev).second) {
1934                 ev->set_selected (true);
1935                 play_midi_note ((ev)->note());
1936         }
1937
1938         if (add_mrv_selection) {
1939                 PublicEditor& editor (trackview.editor());
1940                 editor.get_selection().add (this);
1941         }
1942 }
1943
1944 void
1945 MidiRegionView::move_selection(double dx, double dy)
1946 {
1947         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1948                 (*i)->move_event(dx, dy);
1949         }
1950 }
1951
1952 void
1953 MidiRegionView::note_dropped(CanvasNoteEvent *, double dt, int8_t dnote)
1954 {
1955         assert (!_selection.empty());
1956
1957         uint8_t lowest_note_in_selection  = 127;
1958         uint8_t highest_note_in_selection = 0;
1959         uint8_t highest_note_difference = 0;
1960
1961         // find highest and lowest notes first
1962
1963         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1964                 uint8_t pitch = (*i)->note()->note();
1965                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
1966                 highest_note_in_selection = std::max(highest_note_in_selection, pitch);
1967         }
1968
1969         /*
1970         cerr << "dnote: " << (int) dnote << endl;
1971         cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
1972              << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
1973         cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
1974              << int(highest_note_in_selection) << endl;
1975         cerr << "selection size: " << _selection.size() << endl;
1976         cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
1977         */
1978
1979         // Make sure the note pitch does not exceed the MIDI standard range
1980         if (highest_note_in_selection + dnote > 127) {
1981                 highest_note_difference = highest_note_in_selection - 127;
1982         }
1983
1984         start_diff_command(_("move notes"));
1985
1986         for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ++i) {
1987
1988                 nframes64_t start_frames = beats_to_frames((*i)->note()->time());
1989
1990                 if (dt >= 0) {
1991                         start_frames += snap_frame_to_frame(trackview.editor().pixel_to_frame(dt));
1992                 } else {
1993                         start_frames -= snap_frame_to_frame(trackview.editor().pixel_to_frame(-dt));
1994                 }
1995
1996                 Evoral::MusicalTime new_time = frames_to_beats(start_frames);
1997
1998                 if (new_time < 0) {
1999                         continue;
2000                 }
2001
2002                 diff_add_change (*i, MidiModel::DiffCommand::StartTime, new_time);
2003
2004                 uint8_t original_pitch = (*i)->note()->note();
2005                 uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
2006
2007                 // keep notes in standard midi range
2008                 clamp_to_0_127(new_pitch);
2009
2010                 // keep original pitch if note is dragged outside valid midi range
2011                 if ((original_pitch != 0 && new_pitch == 0)
2012                                 || (original_pitch != 127 && new_pitch == 127)) {
2013                         new_pitch = original_pitch;
2014                 }
2015
2016                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
2017                 highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
2018
2019                 diff_add_change (*i, MidiModel::DiffCommand::NoteNumber, new_pitch);
2020         }
2021
2022         apply_diff();
2023
2024         // care about notes being moved beyond the upper/lower bounds on the canvas
2025         if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
2026             highest_note_in_selection > midi_stream_view()->highest_note()) {
2027                 midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
2028         }
2029 }
2030
2031 nframes64_t
2032 MidiRegionView::snap_pixel_to_frame(double x)
2033 {
2034         PublicEditor& editor = trackview.editor();
2035         // x is region relative, convert it to global absolute frames
2036         nframes64_t frame = editor.pixel_to_frame(x) + _region->position();
2037         editor.snap_to(frame);
2038         return frame - _region->position(); // convert back to region relative
2039 }
2040
2041 nframes64_t
2042 MidiRegionView::snap_frame_to_frame(nframes64_t x)
2043 {
2044         PublicEditor& editor = trackview.editor();
2045         // x is region relative, convert it to global absolute frames
2046         nframes64_t frame = x + _region->position();
2047         editor.snap_to(frame);
2048         return frame - _region->position(); // convert back to region relative
2049 }
2050
2051 double
2052 MidiRegionView::snap_to_pixel(double x)
2053 {
2054         return (double) trackview.editor().frame_to_pixel(snap_pixel_to_frame(x));
2055 }
2056
2057 double
2058 MidiRegionView::get_position_pixels()
2059 {
2060         nframes64_t region_frame = get_position();
2061         return trackview.editor().frame_to_pixel(region_frame);
2062 }
2063
2064 double
2065 MidiRegionView::get_end_position_pixels()
2066 {
2067         nframes64_t frame = get_position() + get_duration ();
2068         return trackview.editor().frame_to_pixel(frame);
2069 }
2070
2071 nframes64_t
2072 MidiRegionView::beats_to_frames(double beats) const
2073 {
2074         return _time_converter.to(beats);
2075 }
2076
2077 double
2078 MidiRegionView::frames_to_beats(nframes64_t frames) const
2079 {
2080         return _time_converter.from(frames);
2081 }
2082
2083 void
2084 MidiRegionView::begin_resizing (bool /*at_front*/)
2085 {
2086         _resize_data.clear();
2087
2088         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2089                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
2090
2091                 // only insert CanvasNotes into the map
2092                 if (note) {
2093                         NoteResizeData *resize_data = new NoteResizeData();
2094                         resize_data->canvas_note = note;
2095
2096                         // create a new SimpleRect from the note which will be the resize preview
2097                         SimpleRect *resize_rect = new SimpleRect(
2098                                         *group, note->x1(), note->y1(), note->x2(), note->y2());
2099
2100                         // calculate the colors: get the color settings
2101                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
2102                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
2103                                         128);
2104
2105                         // make the resize preview notes more transparent and bright
2106                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
2107
2108                         // calculate color based on note velocity
2109                         resize_rect->property_fill_color_rgba() = UINT_INTERPOLATE(
2110                                 CanvasNoteEvent::meter_style_fill_color(note->note()->velocity(), note->selected()),
2111                                         fill_color,
2112                                         0.85);
2113
2114                         resize_rect->property_outline_color_rgba() = CanvasNoteEvent::calculate_outline(
2115                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
2116
2117                         resize_data->resize_rect = resize_rect;
2118                         _resize_data.push_back(resize_data);
2119                 }
2120         }
2121 }
2122
2123 /** Update resizing notes while user drags.
2124  * @param primary `primary' note for the drag; ie the one that is used as the reference in non-relative mode.
2125  * @param at_front which end of the note (true == note on, false == note off)
2126  * @param delta_x change in mouse position since the start of the drag
2127  * @param relative true if relative resizing is taking place, false if absolute resizing.  This only makes
2128  * a difference when multiple notes are being resized; in relative mode, each note's length is changed by the
2129  * amount of the drag.  In non-relative mode, all selected notes are set to have the same start or end point
2130  * as the \a primary note.
2131  */
2132 void
2133 MidiRegionView::update_resizing (ArdourCanvas::CanvasNote* primary, bool at_front, double delta_x, bool relative)
2134 {
2135         bool cursor_set = false;
2136
2137         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2138                 SimpleRect* resize_rect = (*i)->resize_rect;
2139                 CanvasNote* canvas_note = (*i)->canvas_note;
2140                 double current_x;
2141
2142                 if (at_front) {
2143                         if (relative) {
2144                                 current_x = canvas_note->x1() + delta_x;
2145                         } else {
2146                                 current_x = primary->x1() + delta_x;
2147                         }
2148                 } else {
2149                         if (relative) {
2150                                 current_x = canvas_note->x2() + delta_x;
2151                         } else {
2152                                 current_x = primary->x2() + delta_x;
2153                         }
2154                 }
2155
2156                 if (at_front) {
2157                         resize_rect->property_x1() = snap_to_pixel(current_x);
2158                         resize_rect->property_x2() = canvas_note->x2();
2159                 } else {
2160                         resize_rect->property_x2() = snap_to_pixel(current_x);
2161                         resize_rect->property_x1() = canvas_note->x1();
2162                 }
2163
2164                 if (!cursor_set) {
2165                         double beats;
2166
2167                         beats = snap_pixel_to_frame (current_x);
2168                         beats = frames_to_beats (beats);
2169
2170                         double len;
2171
2172                         if (at_front) {
2173                                 if (beats < canvas_note->note()->end_time()) {
2174                                         len = canvas_note->note()->time() - beats;
2175                                         len += canvas_note->note()->length();
2176                                 } else {
2177                                         len = 0;
2178                                 }
2179                         } else {
2180                                 if (beats >= canvas_note->note()->end_time()) {
2181                                         len = beats - canvas_note->note()->time();
2182                                 } else {
2183                                         len = 0;
2184                                 }
2185                         }
2186
2187                         char buf[16];
2188                         snprintf (buf, sizeof (buf), "%.3g beats", len);
2189                         trackview.editor().show_verbose_canvas_cursor_with (buf);
2190
2191                         cursor_set = true;
2192                 }
2193
2194         }
2195 }
2196
2197
2198 /** Finish resizing notes when the user releases the mouse button.
2199  *  Parameters the same as for \a update_resizing().
2200  */
2201 void
2202 MidiRegionView::commit_resizing (ArdourCanvas::CanvasNote* primary, bool at_front, double delta_x, bool relative)
2203 {
2204         start_diff_command(_("resize notes"));
2205
2206         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
2207                 CanvasNote*  canvas_note = (*i)->canvas_note;
2208                 SimpleRect*  resize_rect = (*i)->resize_rect;
2209                 double current_x;
2210
2211                 if (at_front) {
2212                         if (relative) {
2213                                 current_x = canvas_note->x1() + delta_x;
2214                         } else {
2215                                 current_x = primary->x1() + delta_x;
2216                         }
2217                 } else {
2218                         if (relative) {
2219                                 current_x = canvas_note->x2() + delta_x;
2220                         } else {
2221                                 current_x = primary->x2() + delta_x;
2222                         }
2223                 }
2224
2225                 current_x = snap_pixel_to_frame (current_x);
2226                 current_x = frames_to_beats (current_x);
2227
2228                 if (at_front && current_x < canvas_note->note()->end_time()) {
2229                         diff_add_change (canvas_note, MidiModel::DiffCommand::StartTime, current_x);
2230
2231                         double len = canvas_note->note()->time() - current_x;
2232                         len += canvas_note->note()->length();
2233
2234                         if (len > 0) {
2235                                 /* XXX convert to beats */
2236                                 diff_add_change (canvas_note, MidiModel::DiffCommand::Length, len);
2237                         }
2238                 }
2239
2240                 if (!at_front) {
2241                         double len = current_x - canvas_note->note()->time();
2242
2243                         if (len > 0) {
2244                                 /* XXX convert to beats */
2245                                 diff_add_change (canvas_note, MidiModel::DiffCommand::Length, len);
2246                         }
2247                 }
2248
2249                 delete resize_rect;
2250                 delete (*i);
2251         }
2252
2253         _resize_data.clear();
2254         apply_diff();
2255 }
2256
2257 void
2258 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
2259 {
2260         uint8_t new_velocity;
2261
2262         if (relative) {
2263                 new_velocity = event->note()->velocity() + velocity;
2264                 clamp_to_0_127(new_velocity);
2265         } else {
2266                 new_velocity = velocity;
2267         }
2268
2269         event->set_selected (event->selected()); // change color
2270
2271         diff_add_change (event, MidiModel::DiffCommand::Velocity, new_velocity);
2272 }
2273
2274 void
2275 MidiRegionView::change_note_note (CanvasNoteEvent* event, int8_t note, bool relative)
2276 {
2277         uint8_t new_note;
2278
2279         if (relative) {
2280                 new_note = event->note()->note() + note;
2281         } else {
2282                 new_note = note;
2283         }
2284
2285         clamp_to_0_127 (new_note);
2286         diff_add_change (event, MidiModel::DiffCommand::NoteNumber, new_note);
2287 }
2288
2289 void
2290 MidiRegionView::trim_note (CanvasNoteEvent* event, Evoral::MusicalTime front_delta, Evoral::MusicalTime end_delta)
2291 {
2292         bool change_start = false;
2293         bool change_length = false;
2294         Evoral::MusicalTime new_start = 0;
2295         Evoral::MusicalTime new_length = 0;
2296
2297         /* NOTE: the semantics of the two delta arguments are slightly subtle:
2298
2299            front_delta: if positive - move the start of the note later in time (shortening it)
2300                         if negative - move the start of the note earlier in time (lengthening it)
2301
2302            end_delta:   if positive - move the end of the note later in time (lengthening it)
2303                         if negative - move the end of the note earlier in time (shortening it)
2304          */
2305
2306         if (front_delta) {
2307                 if (front_delta < 0) {
2308
2309                         if (event->note()->time() < -front_delta) {
2310                                 new_start = 0;
2311                         } else {
2312                                 new_start = event->note()->time() + front_delta; // moves earlier
2313                         }
2314
2315                         /* start moved toward zero, so move the end point out to where it used to be.
2316                            Note that front_delta is negative, so this increases the length.
2317                         */
2318
2319                         new_length = event->note()->length() - front_delta;
2320                         change_start = true;
2321                         change_length = true;
2322
2323                 } else {
2324
2325                         Evoral::MusicalTime new_pos = event->note()->time() + front_delta;
2326
2327                         if (new_pos < event->note()->end_time()) {
2328                                 new_start = event->note()->time() + front_delta;
2329                                 /* start moved toward the end, so move the end point back to where it used to be */
2330                                 new_length = event->note()->length() - front_delta;
2331                                 change_start = true;
2332                                 change_length = true;
2333                         }
2334                 }
2335
2336         }
2337
2338         if (end_delta) {
2339                 bool can_change = true;
2340                 if (end_delta < 0) {
2341                         if (event->note()->length() < -end_delta) {
2342                                 can_change = false;
2343                         }
2344                 }
2345
2346                 if (can_change) {
2347                         new_length = event->note()->length() + end_delta;
2348                         change_length = true;
2349                 }
2350         }
2351
2352         if (change_start) {
2353                 diff_add_change (event, MidiModel::DiffCommand::StartTime, new_start);
2354         }
2355
2356         if (change_length) {
2357                 diff_add_change (event, MidiModel::DiffCommand::Length, new_length);
2358         }
2359 }
2360
2361 void
2362 MidiRegionView::change_note_time (CanvasNoteEvent* event, Evoral::MusicalTime delta, bool relative)
2363 {
2364         Evoral::MusicalTime new_time;
2365
2366         if (relative) {
2367                 if (delta < 0.0) {
2368                         if (event->note()->time() < -delta) {
2369                                 new_time = 0;
2370                         } else {
2371                                 new_time = event->note()->time() + delta;
2372                         }
2373                 } else {
2374                         new_time = event->note()->time() + delta;
2375                 }
2376         } else {
2377                 new_time = delta;
2378         }
2379
2380         diff_add_change (event, MidiModel::DiffCommand::StartTime, new_time);
2381 }
2382
2383 void
2384 MidiRegionView::change_velocities (bool up, bool fine, bool allow_smush)
2385 {
2386         int8_t delta;
2387
2388         if (_selection.empty()) {
2389                 return;
2390         }
2391
2392         if (fine) {
2393                 delta = 1;
2394         } else {
2395                 delta = 10;
2396         }
2397
2398         if (!up) {
2399                 delta = -delta;
2400         }
2401
2402         if (!allow_smush) {
2403                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2404                         if ((*i)->note()->velocity() + delta == 0 || (*i)->note()->velocity() + delta == 127) {
2405                                 return;
2406                         }
2407                 }
2408         }
2409
2410         start_diff_command(_("change velocities"));
2411
2412         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
2413                 Selection::iterator next = i;
2414                 ++next;
2415                 change_note_velocity (*i, delta, true);
2416                 i = next;
2417         }
2418
2419         apply_diff();
2420
2421         if (!_selection.empty()) {
2422                 char buf[24];
2423                 snprintf (buf, sizeof (buf), "Vel %d",
2424                           (int) (*_selection.begin())->note()->velocity());
2425                 trackview.editor().show_verbose_canvas_cursor_with (buf);
2426         }
2427 }
2428
2429
2430 void
2431 MidiRegionView::transpose (bool up, bool fine, bool allow_smush)
2432 {
2433         if (_selection.empty()) {
2434                 return;
2435         }
2436
2437         int8_t delta;
2438
2439         if (fine) {
2440                 delta = 1;
2441         } else {
2442                 delta = 12;
2443         }
2444
2445         if (!up) {
2446                 delta = -delta;
2447         }
2448
2449         if (!allow_smush) {
2450                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2451                         if (!up) {
2452                                 if ((int8_t) (*i)->note()->note() + delta <= 0) {
2453                                         return;
2454                                 }
2455                         } else {
2456                                 if ((int8_t) (*i)->note()->note() + delta > 127) {
2457                                         return;
2458                                 }
2459                         }
2460                 }
2461         }
2462
2463         start_diff_command (_("transpose"));
2464
2465         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2466                 Selection::iterator next = i;
2467                 ++next;
2468                 change_note_note (*i, delta, true);
2469                 i = next;
2470         }
2471
2472         apply_diff ();
2473 }
2474
2475 void
2476 MidiRegionView::change_note_lengths (bool fine, bool shorter, bool start, bool end)
2477 {
2478         Evoral::MusicalTime delta;
2479
2480         if (fine) {
2481                 delta = 1.0/128.0;
2482         } else {
2483                 /* grab the current grid distance */
2484                 bool success;
2485                 delta = trackview.editor().get_grid_type_as_beats (success, _region->position());
2486                 if (!success) {
2487                         /* XXX cannot get grid type as beats ... should always be possible ... FIX ME */
2488                         cerr << "Grid type not available as beats - TO BE FIXED\n";
2489                         return;
2490                 }
2491         }
2492
2493         if (shorter) {
2494                 delta = -delta;
2495         }
2496
2497         start_diff_command (_("change note lengths"));
2498
2499         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2500                 Selection::iterator next = i;
2501                 ++next;
2502
2503                 /* note the negation of the delta for start */
2504
2505                 trim_note (*i, (start ? -delta : 0), (end ? delta : 0));
2506                 i = next;
2507         }
2508
2509         apply_diff ();
2510
2511 }
2512
2513 void
2514 MidiRegionView::nudge_notes (bool forward)
2515 {
2516         if (_selection.empty()) {
2517                 return;
2518         }
2519
2520         /* pick a note as the point along the timeline to get the nudge distance.
2521            its not necessarily the earliest note, so we may want to pull the notes out
2522            into a vector and sort before using the first one.
2523         */
2524
2525         nframes64_t ref_point = _region->position() + beats_to_frames ((*(_selection.begin()))->note()->time());
2526         nframes64_t unused;
2527         nframes64_t distance;
2528
2529         if (trackview.editor().snap_mode() == Editing::SnapOff) {
2530
2531                 /* grid is off - use nudge distance */
2532
2533                 distance = trackview.editor().get_nudge_distance (ref_point, unused);
2534
2535         } else {
2536
2537                 /* use grid */
2538
2539                 nframes64_t next_pos = ref_point;
2540
2541                 if (forward) {
2542                         /* XXX need check on max_frames, but that needs max_frames64 or something */
2543                         next_pos += 1;
2544                 } else {
2545                         if (next_pos == 0) {
2546                                 return;
2547                         }
2548                         next_pos -= 1;
2549                 }
2550
2551                 trackview.editor().snap_to (next_pos, (forward ? 1 : -1), false);
2552                 distance = ref_point - next_pos;
2553         }
2554
2555         if (distance == 0) {
2556                 return;
2557         }
2558
2559         Evoral::MusicalTime delta = frames_to_beats (fabs (distance));
2560
2561         if (!forward) {
2562                 delta = -delta;
2563         }
2564
2565         start_diff_command (_("nudge"));
2566
2567         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
2568                 Selection::iterator next = i;
2569                 ++next;
2570                 change_note_time (*i, delta, true);
2571                 i = next;
2572         }
2573
2574         apply_diff ();
2575 }
2576
2577 void
2578 MidiRegionView::change_channel(uint8_t channel)
2579 {
2580         start_diff_command(_("change channel"));
2581         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2582                 diff_add_change (*i, MidiModel::DiffCommand::Channel, channel);
2583         }
2584
2585         apply_diff();
2586 }
2587
2588
2589 void
2590 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
2591 {
2592         if (_mouse_state == SelectTouchDragging) {
2593                 note_selected (ev, true);
2594         }
2595
2596         show_verbose_canvas_cursor (ev->note ());
2597 }
2598
2599 void
2600 MidiRegionView::note_left (ArdourCanvas::CanvasNoteEvent* note)
2601 {
2602         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2603                 (*i)->hide_velocity ();
2604         }
2605
2606         trackview.editor().hide_verbose_canvas_cursor ();
2607 }
2608
2609 void
2610 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
2611 {
2612         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
2613         if (msrc)
2614                 display_model(msrc->model());
2615 }
2616
2617 void
2618 MidiRegionView::set_frame_color()
2619 {
2620         if (frame) {
2621                 if (_selected && should_show_selection) {
2622                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
2623                 } else {
2624                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
2625                 }
2626         }
2627 }
2628
2629 void
2630 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
2631 {
2632         switch (mode) {
2633         case AllChannels:
2634         case FilterChannels:
2635                 _force_channel = -1;
2636                 break;
2637         case ForceChannel:
2638                 _force_channel = mask;
2639                 mask = 0xFFFF; // Show all notes as active (below)
2640         };
2641
2642         // Update notes for selection
2643         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2644                 (*i)->on_channel_selection_change(mask);
2645         }
2646
2647         _last_channel_selection = mask;
2648 }
2649
2650 void
2651 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
2652 {
2653         _model_name         = model;
2654         _custom_device_mode = custom_device_mode;
2655         redisplay_model();
2656 }
2657
2658 void
2659 MidiRegionView::cut_copy_clear (Editing::CutCopyOp op)
2660 {
2661         if (_selection.empty()) {
2662                 return;
2663         }
2664
2665         PublicEditor& editor (trackview.editor());
2666
2667         switch (op) {
2668         case Cut:
2669         case Copy:
2670                 editor.get_cut_buffer().add (selection_as_cut_buffer());
2671                 break;
2672         default:
2673                 break;
2674         }
2675
2676         if (op != Copy) {
2677
2678                 start_diff_command();
2679
2680                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2681                         switch (op) {
2682                         case Copy:
2683                                 break;
2684                         case Cut:
2685                         case Clear:
2686                                 diff_remove_note (*i);
2687                                 break;
2688                         }
2689                 }
2690
2691                 apply_diff();
2692         }
2693 }
2694
2695 MidiCutBuffer*
2696 MidiRegionView::selection_as_cut_buffer () const
2697 {
2698         Notes notes;
2699
2700         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
2701                 NoteType* n = (*i)->note().get();
2702                 notes.insert (boost::shared_ptr<NoteType> (new NoteType (*n)));
2703         }
2704
2705         MidiCutBuffer* cb = new MidiCutBuffer (trackview.session());
2706         cb->set (notes);
2707
2708         return cb;
2709 }
2710
2711 void
2712 MidiRegionView::paste (nframes64_t pos, float times, const MidiCutBuffer& mcb)
2713 {
2714         if (mcb.empty()) {
2715                 return;
2716         }
2717
2718         start_diff_command (_("paste"));
2719
2720         Evoral::MusicalTime beat_delta;
2721         Evoral::MusicalTime paste_pos_beats;
2722         Evoral::MusicalTime duration;
2723         Evoral::MusicalTime end_point = 0;
2724
2725         duration = (*mcb.notes().rbegin())->end_time() - (*mcb.notes().begin())->time();
2726         paste_pos_beats = frames_to_beats (pos - _region->position());
2727         beat_delta = (*mcb.notes().begin())->time() - paste_pos_beats;
2728         paste_pos_beats = 0;
2729
2730         _selection.clear ();
2731
2732         for (int n = 0; n < (int) times; ++n) {
2733
2734                 for (Notes::const_iterator i = mcb.notes().begin(); i != mcb.notes().end(); ++i) {
2735
2736                         boost::shared_ptr<NoteType> copied_note (new NoteType (*((*i).get())));
2737                         copied_note->set_time (paste_pos_beats + copied_note->time() - beat_delta);
2738
2739                         /* make all newly added notes selected */
2740
2741                         diff_add_note (copied_note, true);
2742                         end_point = copied_note->end_time();
2743                 }
2744
2745                 paste_pos_beats += duration;
2746         }
2747
2748         /* if we pasted past the current end of the region, extend the region */
2749
2750         nframes64_t end_frame = _region->position() + beats_to_frames (end_point);
2751         nframes64_t region_end = _region->position() + _region->length() - 1;
2752
2753         if (end_frame > region_end) {
2754
2755                 trackview.session()->begin_reversible_command (_("paste"));
2756
2757                 _region->clear_history ();
2758                 _region->set_length (end_frame, this);
2759                 trackview.session()->add_command (new StatefulDiffCommand (_region));
2760         }
2761
2762         apply_diff ();
2763 }
2764
2765 struct EventNoteTimeEarlyFirstComparator {
2766     bool operator() (CanvasNoteEvent* a, CanvasNoteEvent* b) {
2767             return a->note()->time() < b->note()->time();
2768     }
2769 };
2770
2771 void
2772 MidiRegionView::time_sort_events ()
2773 {
2774         if (!_sort_needed) {
2775                 return;
2776         }
2777
2778         EventNoteTimeEarlyFirstComparator cmp;
2779         _events.sort (cmp);
2780
2781         _sort_needed = false;
2782 }
2783
2784 void
2785 MidiRegionView::goto_next_note ()
2786 {
2787         // nframes64_t pos = -1;
2788         bool use_next = false;
2789
2790         if (_events.back()->selected()) {
2791                 return;
2792         }
2793
2794         time_sort_events ();
2795
2796         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2797                 if ((*i)->selected()) {
2798                         use_next = true;
2799                         continue;
2800                 } else if (use_next) {
2801                         unique_select (*i);
2802                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
2803                         return;
2804                 }
2805         }
2806
2807         /* use the first one */
2808
2809         unique_select (_events.front());
2810
2811 }
2812
2813 void
2814 MidiRegionView::goto_previous_note ()
2815 {
2816         // nframes64_t pos = -1;
2817         bool use_next = false;
2818
2819         if (_events.front()->selected()) {
2820                 return;
2821         }
2822
2823         time_sort_events ();
2824
2825         for (Events::reverse_iterator i = _events.rbegin(); i != _events.rend(); ++i) {
2826                 if ((*i)->selected()) {
2827                         use_next = true;
2828                         continue;
2829                 } else if (use_next) {
2830                         unique_select (*i);
2831                         // pos = _region->position() + beats_to_frames ((*i)->note()->time());
2832                         return;
2833                 }
2834         }
2835
2836         /* use the last one */
2837
2838         unique_select (*(_events.rbegin()));
2839 }
2840
2841 void
2842 MidiRegionView::selection_as_notelist (Notes& selected, bool allow_all_if_none_selected)
2843 {
2844         bool had_selected = false;
2845
2846         time_sort_events ();
2847
2848         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2849                 if ((*i)->selected()) {
2850                         selected.insert ((*i)->note());
2851                         had_selected = true;
2852                 }
2853         }
2854
2855         if (allow_all_if_none_selected && !had_selected) {
2856                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2857                         selected.insert ((*i)->note());
2858                 }
2859         }
2860 }
2861
2862 void
2863 MidiRegionView::update_ghost_note (double x, double y)
2864 {
2865         _last_ghost_x = x;
2866         _last_ghost_y = y;
2867
2868         group->w2i (x, y);
2869         nframes64_t f = trackview.editor().pixel_to_frame (x) + _region->position ();
2870         trackview.editor().snap_to (f);
2871         f -= _region->position ();
2872
2873         bool success;
2874         Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, f);
2875         if (!success) {
2876                 beats = 1;
2877         }
2878
2879         double length = frames_to_beats (snap_frame_to_frame (f + beats_to_frames (beats)) - f);
2880
2881         _ghost_note->note()->set_time (frames_to_beats (f + _region->start()));
2882         _ghost_note->note()->set_length (length);
2883         _ghost_note->note()->set_note (midi_stream_view()->y_to_note (y));
2884
2885         update_note (_ghost_note);
2886
2887         show_verbose_canvas_cursor (_ghost_note->note ());
2888 }
2889
2890 void
2891 MidiRegionView::create_ghost_note (double x, double y)
2892 {
2893         delete _ghost_note;
2894         _ghost_note = 0;
2895
2896         boost::shared_ptr<NoteType> g (new NoteType);
2897         _ghost_note = new NoEventCanvasNote (*this, *group, g);
2898         update_ghost_note (x, y);
2899         _ghost_note->show ();
2900
2901         _last_ghost_x = x;
2902         _last_ghost_y = y;
2903
2904         show_verbose_canvas_cursor (_ghost_note->note ());
2905 }
2906
2907 void
2908 MidiRegionView::snap_changed ()
2909 {
2910         if (!_ghost_note) {
2911                 return;
2912         }
2913
2914         create_ghost_note (_last_ghost_x, _last_ghost_y);
2915 }
2916
2917 void
2918 MidiRegionView::show_verbose_canvas_cursor (boost::shared_ptr<NoteType> n) const
2919 {
2920         char buf[24];
2921         snprintf (buf, sizeof (buf), "%s (%d)\nVel %d",
2922                   Evoral::midi_note_name (n->note()).c_str(),
2923                   (int) n->note (),
2924                   (int) n->velocity());
2925         trackview.editor().show_verbose_canvas_cursor_with (buf);
2926 }
2927
2928 void
2929 MidiRegionView::drop_down_keys ()
2930 {
2931         _mouse_state = None;
2932 }
2933
2934 void
2935 MidiRegionView::maybe_select_by_position (GdkEventButton* ev, double x, double y)
2936 {
2937         double note = midi_stream_view()->y_to_note(y);
2938         Events e;
2939         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
2940
2941         cerr << "Selecting by position\n";
2942
2943         uint16_t chn_mask = mtv->channel_selector().get_selected_channels();
2944
2945         if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
2946                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchGreaterThanOrEqual, (uint8_t) floor (note), chn_mask);
2947         } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
2948                 get_events (e, Evoral::Sequence<Evoral::MusicalTime>::PitchLessThanOrEqual, (uint8_t) floor (note), chn_mask);
2949         } else {
2950                 return;
2951         }
2952
2953         bool add_mrv_selection = false;
2954
2955         if (_selection.empty()) {
2956                 add_mrv_selection = true;
2957         }
2958
2959         for (Events::iterator i = e.begin(); i != e.end(); ++i) {
2960                 if (_selection.insert (*i).second) {
2961                         (*i)->set_selected (true);
2962                 }
2963         }
2964
2965         if (add_mrv_selection) {
2966                 PublicEditor& editor (trackview.editor());
2967                 editor.get_selection().add (this);
2968         }
2969 }
2970
2971 void
2972 MidiRegionView::color_handler ()
2973 {
2974         RegionView::color_handler ();
2975
2976         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
2977                 (*i)->set_selected ((*i)->selected()); // will change color
2978         }
2979
2980         /* XXX probably more to do here */
2981 }
2982
2983 void
2984 MidiRegionView::enable_display (bool yn)
2985 {
2986         RegionView::enable_display (yn);
2987         if (yn) {
2988                 redisplay_model ();
2989         }
2990 }
2991
2992 void
2993 MidiRegionView::show_step_edit_cursor (Evoral::MusicalTime pos)
2994 {
2995         if (_step_edit_cursor == 0) {
2996                 ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
2997
2998                 _step_edit_cursor = new ArdourCanvas::SimpleRect (*group);
2999                 _step_edit_cursor->property_y1() = 0;
3000                 _step_edit_cursor->property_y2() = midi_stream_view()->contents_height();
3001                 _step_edit_cursor->property_fill_color_rgba() = RGBA_TO_UINT (45,0,0,90);
3002                 _step_edit_cursor->property_outline_color_rgba() = RGBA_TO_UINT (85,0,0,90);
3003         }
3004
3005         move_step_edit_cursor (pos);
3006         _step_edit_cursor->show ();
3007 }
3008
3009 void
3010 MidiRegionView::move_step_edit_cursor (Evoral::MusicalTime pos)
3011 {
3012         _step_edit_cursor_position = pos;
3013
3014         if (_step_edit_cursor) {
3015                 double pixel = trackview.editor().frame_to_pixel (beats_to_frames (pos));
3016                 _step_edit_cursor->property_x1() = pixel;
3017                 set_step_edit_cursor_width (_step_edit_cursor_width);
3018         }
3019 }
3020
3021 void
3022 MidiRegionView::hide_step_edit_cursor ()
3023 {
3024         if (_step_edit_cursor) {
3025                 _step_edit_cursor->hide ();
3026         }
3027 }
3028
3029 void
3030 MidiRegionView::set_step_edit_cursor_width (Evoral::MusicalTime beats)
3031 {
3032         _step_edit_cursor_width = beats;
3033
3034         if (_step_edit_cursor) {
3035                 _step_edit_cursor->property_x2() = _step_edit_cursor->property_x1() + trackview.editor().frame_to_pixel (beats_to_frames (beats));
3036         }
3037 }
3038