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
  24 #include <gtkmm.h>
  25
  26 #include <gtkmm2ext/gtk_ui.h>
  27
  28 #include <sigc++/signal.h>
  29
  30 #include <ardour/playlist.h>
  31 #include <ardour/tempo.h>
  32 #include <ardour/midi_region.h>
  33 #include <ardour/midi_source.h>
  34 #include <ardour/midi_diskstream.h>
  35 #include <ardour/midi_model.h>
  36 #include <ardour/midi_patch_manager.h>
  37
  38 #include <evoral/Parameter.hpp>
  39 #include <evoral/Control.hpp>
  40
  41 #include "streamview.h"
  42 #include "midi_region_view.h"
  43 #include "midi_streamview.h"
  44 #include "midi_time_axis.h"
  45 #include "simpleline.h"
  46 #include "canvas-hit.h"
  47 #include "canvas-note.h"
  48 #include "canvas-program-change.h"
  49 #include "public_editor.h"
  50 #include "ghostregion.h"
  51 #include "midi_time_axis.h"
  52 #include "automation_time_axis.h"
  53 #include "automation_region_view.h"
  54 #include "utils.h"
  55 #include "midi_util.h"
  56 #include "gui_thread.h"
  57 #include "keyboard.h"
  58
  59 #include "i18n.h"
  60
  61 using namespace sigc;
  62 using namespace ARDOUR;
  63 using namespace PBD;
  64 using namespace Editing;
  65 using namespace ArdourCanvas;
  66
  67 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
  68                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color)
  69         : RegionView (parent, tv, r, spu, basic_color)
  70         , _force_channel(-1)
  71         , _last_channel_selection(0xFFFF)
  72         , _default_note_length(1.0)
  73         , _current_range_min(0)
  74         , _current_range_max(0)
  75         , _model_name(string())
  76         , _custom_device_mode(string())
  77         , _active_notes(0)
  78         , _note_group(new ArdourCanvas::Group(*parent))
  79         , _delta_command(NULL)
  80         , _mouse_state(None)
  81         , _pressed_button(0)
  82 {
  83         _note_group->raise_to_top();
  84 }
  85
  86 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
  87                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color,
  88                 TimeAxisViewItem::Visibility visibility)
  89         : RegionView (parent, tv, r, spu, basic_color, false, visibility)
  90         , _force_channel(-1)
  91         , _last_channel_selection(0xFFFF)
  92         , _default_note_length(1.0)
  93         , _model_name(string())
  94         , _custom_device_mode(string())
  95         , _active_notes(0)
  96         , _note_group(new ArdourCanvas::Group(*parent))
  97         , _delta_command(NULL)
  98         , _mouse_state(None)
  99         , _pressed_button(0)
 100
 101 {
 102         _note_group->raise_to_top();
 103 }
 104
 105
 106 MidiRegionView::MidiRegionView (const MidiRegionView& other)
 107         : RegionView (other)
 108         , _force_channel(-1)
 109         , _last_channel_selection(0xFFFF)
 110         , _default_note_length(1.0)
 111         , _model_name(string())
 112         , _custom_device_mode(string())
 113         , _active_notes(0)
 114         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 115         , _delta_command(NULL)
 116         , _mouse_state(None)
 117         , _pressed_button(0)
 118 {
 119         Gdk::Color c;
 120         int r,g,b,a;
 121
 122         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 123         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 124
 125         init (c, false);
 126 }
 127
 128 MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<MidiRegion> region)
 129         : RegionView (other, boost::shared_ptr<Region> (region))
 130         , _force_channel(-1)
 131         , _last_channel_selection(0xFFFF)
 132         , _default_note_length(1.0)
 133         , _model_name(string())
 134         , _custom_device_mode(string())
 135         , _active_notes(0)
 136         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 137         , _delta_command(NULL)
 138         , _mouse_state(None)
 139         , _pressed_button(0)
 140 {
 141         Gdk::Color c;
 142         int r,g,b,a;
 143
 144         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 145         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 146
 147         init (c, true);
 148 }
 149
 150 void
 151 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
 152 {
 153         if (wfd) {
 154                 midi_region()->midi_source(0)->load_model();
 155         }
 156
 157         _model = midi_region()->midi_source(0)->model();
 158         _enable_display = false;
 159
 160         RegionView::init (basic_color, false);
 161
 162         compute_colors (basic_color);
 163
 164         set_height (trackview.current_height());
 165
 166         region_muted ();
 167         region_sync_changed ();
 168         region_resized (BoundsChanged);
 169         region_locked ();
 170
 171         reset_width_dependent_items (_pixel_width);
 172         //reset_width_dependent_items ((double) _region->length() / samples_per_unit);
 173
 174         set_colors ();
 175
 176         _enable_display = true;
 177         if (_model) {
 178                 if (wfd) {
 179                         redisplay_model();
 180                 }
 181                 _model->ContentsChanged.connect(sigc::mem_fun(this, &MidiRegionView::redisplay_model));
 182         }
 183
 184         group->raise_to_top();
 185         group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event), false);
 186
 187         midi_view()->signal_channel_mode_changed().connect(
 188                         mem_fun(this, &MidiRegionView::midi_channel_mode_changed));
 189
 190         midi_view()->signal_midi_patch_settings_changed().connect(
 191                         mem_fun(this, &MidiRegionView::midi_patch_settings_changed));
 192 }
 193
 194 bool
 195 MidiRegionView::canvas_event(GdkEvent* ev)
 196 {
 197         static bool delete_mod = false;
 198         static Editing::MidiEditMode original_mode;
 199
 200         static double drag_start_x, drag_start_y;
 201         static double last_x, last_y;
 202         double event_x, event_y;
 203         nframes64_t event_frame = 0;
 204
 205         static ArdourCanvas::SimpleRect* drag_rect = NULL;
 206
 207         if (trackview.editor().current_mouse_mode() != MouseNote)
 208                 return false;
 209
 210         const Editing::MidiEditMode midi_edit_mode = trackview.editor().current_midi_edit_mode();
 211
 212         switch (ev->type) {
 213         case GDK_KEY_PRESS:
 214                 if (ev->key.keyval == GDK_Delete && !delete_mod) {
 215                         delete_mod = true;
 216                         original_mode = midi_edit_mode;
 217                         trackview.editor().set_midi_edit_mode(MidiEditErase);
 218                         start_delta_command(_("erase notes"));
 219                         _mouse_state = EraseTouchDragging;
 220                         return true;
 221                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 222                         _mouse_state = SelectTouchDragging;
 223                         return true;
 224                 } else if (ev->key.keyval == GDK_Escape) {
 225                         clear_selection();
 226                         _mouse_state = None;
 227                 }
 228                 return false;
 229
 230         case GDK_KEY_RELEASE:
 231                 if (ev->key.keyval == GDK_Delete) {
 232                         if (_mouse_state == EraseTouchDragging) {
 233                                 delete_selection();
 234                                 apply_command();
 235                         }
 236                         if (delete_mod) {
 237                                 trackview.editor().set_midi_edit_mode(original_mode);
 238                                 _mouse_state = None;
 239                                 delete_mod = false;
 240                         }
 241                         return true;
 242                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 243                         _mouse_state = None;
 244                         return true;
 245                 }
 246                 return false;
 247
 248         case GDK_BUTTON_PRESS:
 249                 if (_mouse_state != SelectTouchDragging &&
 250                         _mouse_state != EraseTouchDragging &&
 251                         ev->button.button == 1) {
 252                         _pressed_button = ev->button.button;
 253                         _mouse_state = Pressed;
 254                         return true;
 255                 }
 256                 _pressed_button = ev->button.button;
 257                 return true;
 258
 259         case GDK_2BUTTON_PRESS:
 260                 return true;
 261
 262         case GDK_ENTER_NOTIFY:
 263                 /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 264                 Keyboard::magic_widget_grab_focus();
 265                 group->grab_focus();
 266                 break;
 267
 268         case GDK_MOTION_NOTIFY:
 269                 event_x = ev->motion.x;
 270                 event_y = ev->motion.y;
 271                 group->w2i(event_x, event_y);
 272
 273                 // convert event_x to global frame
 274                 event_frame = trackview.editor().pixel_to_frame(event_x) + _region->position();
 275                 trackview.editor().snap_to(event_frame);
 276                 // convert event_frame back to local coordinates relative to position
 277                 event_frame -= _region->position();
 278
 279                 switch (_mouse_state) {
 280                 case Pressed: // Drag start
 281
 282                         // Select drag start
 283                         if (_pressed_button == 1 && midi_edit_mode == MidiEditSelect) {
 284                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 285                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 286                                 last_x = event_x;
 287                                 last_y = event_y;
 288                                 drag_start_x = event_x;
 289                                 drag_start_y = event_y;
 290
 291                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 292                                 drag_rect->property_x1() = event_x;
 293                                 drag_rect->property_y1() = event_y;
 294                                 drag_rect->property_x2() = event_x;
 295                                 drag_rect->property_y2() = event_y;
 296                                 drag_rect->property_outline_what() = 0xFF;
 297                                 drag_rect->property_outline_color_rgba()
 298                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 299                                 drag_rect->property_fill_color_rgba()
 300                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 301
 302                                 _mouse_state = SelectRectDragging;
 303                                 return true;
 304
 305                         // Add note drag start
 306                         } else if (midi_edit_mode == MidiEditPencil) {
 307                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 308                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 309                                 last_x = event_x;
 310                                 last_y = event_y;
 311                                 drag_start_x = event_x;
 312                                 drag_start_y = event_y;
 313
 314                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 315                                 drag_rect->property_x1() = trackview.editor().frame_to_pixel(event_frame);
 316
 317                                 drag_rect->property_y1() = midi_stream_view()->note_to_y(
 318                                                 midi_stream_view()->y_to_note(event_y));
 319                                 drag_rect->property_x2() = event_x;
 320                                 drag_rect->property_y2() = drag_rect->property_y1()
 321                                                          + floor(midi_stream_view()->note_height());
 322                                 drag_rect->property_outline_what() = 0xFF;
 323                                 drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 324                                 drag_rect->property_fill_color_rgba()    = 0xFFFFFF66;
 325
 326                                 _mouse_state = AddDragging;
 327                                 return true;
 328                         }
 329
 330                         return false;
 331
 332                 case SelectRectDragging: // Select drag motion
 333                 case AddDragging: // Add note drag motion
 334                         if (ev->motion.is_hint) {
 335                                 int t_x;
 336                                 int t_y;
 337                                 GdkModifierType state;
 338                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 339                                 event_x = t_x;
 340                                 event_y = t_y;
 341                         }
 342
 343                         if (_mouse_state == AddDragging)
 344                                 event_x = trackview.editor().frame_to_pixel(event_frame);
 345
 346                         if (drag_rect) {
 347                                 if (event_x > drag_start_x)
 348                                         drag_rect->property_x2() = event_x;
 349                                 else
 350                                         drag_rect->property_x1() = event_x;
 351                         }
 352
 353                         if (drag_rect && _mouse_state == SelectRectDragging) {
 354                                 if (event_y > drag_start_y)
 355                                         drag_rect->property_y2() = event_y;
 356                                 else
 357                                         drag_rect->property_y1() = event_y;
 358
 359                                 update_drag_selection(drag_start_x, event_x, drag_start_y, event_y);
 360                         }
 361
 362                         last_x = event_x;
 363                         last_y = event_y;
 364
 365                 case EraseTouchDragging:
 366                 case SelectTouchDragging:
 367                         return false;
 368
 369                 default:
 370                         break;
 371                 }
 372                 break;
 373
 374         case GDK_BUTTON_RELEASE:
 375                 event_x = ev->motion.x;
 376                 event_y = ev->motion.y;
 377                 group->w2i(event_x, event_y);
 378                 group->ungrab(ev->button.time);
 379                 event_frame = trackview.editor().pixel_to_frame(event_x);
 380
 381                 if (_pressed_button != 1) {
 382                         return false;
 383                 }
 384
 385                 switch (_mouse_state) {
 386                 case Pressed: // Clicked
 387                         switch (midi_edit_mode) {
 388                         case MidiEditSelect:
 389                         case MidiEditResize:
 390                                 clear_selection();
 391                                 break;
 392                         case MidiEditPencil:
 393                                 create_note_at(event_x, event_y, _default_note_length);
 394                         default: break;
 395                         }
 396                         _mouse_state = None;
 397                         break;
 398                 case SelectRectDragging: // Select drag done
 399                         _mouse_state = None;
 400                         delete drag_rect;
 401                         drag_rect = NULL;
 402                         break;
 403                 case AddDragging: // Add drag done
 404                         _mouse_state = None;
 405                         if (drag_rect->property_x2() > drag_rect->property_x1() + 2) {
 406                                 const double x      = drag_rect->property_x1();
 407                                 const double length = trackview.editor().pixel_to_frame(
 408                                                         drag_rect->property_x2() - drag_rect->property_x1());
 409
 410                                 create_note_at(x, drag_rect->property_y1(), frames_to_beats(length));
 411                         }
 412
 413                         delete drag_rect;
 414                         drag_rect = NULL;
 415                 default: break;
 416                 }
 417
 418         default: break;
 419         }
 420
 421         return false;
 422 }
 423
 424
 425 /** Add a note to the model, and the view, at a canvas (click) coordinate.
 426  * \param x horizontal position in pixels
 427  * \param y vertical position in pixels
 428  * \param length duration of the note in beats */
 429 void
 430 MidiRegionView::create_note_at(double x, double y, double length)
 431 {
 432         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 433         MidiStreamView* const view = mtv->midi_view();
 434
 435         double note = midi_stream_view()->y_to_note(y);
 436
 437         assert(note >= 0.0);
 438         assert(note <= 127.0);
 439
 440         // Start of note in frames relative to region start
 441         nframes64_t start_frames = snap_to_frame(trackview.editor().pixel_to_frame(x));
 442         assert(start_frames >= 0);
 443
 444         // Snap length
 445         length = frames_to_beats(
 446                         snap_to_frame(start_frames + beats_to_frames(length)) - start_frames);
 447
 448         const boost::shared_ptr<NoteType> new_note(new NoteType(0,
 449                         frames_to_beats(start_frames + _region->start()), length,
 450                         (uint8_t)note, 0x40));
 451
 452         view->update_note_range(new_note->note());
 453
 454         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 455         cmd->add(new_note);
 456         _model->apply_command(trackview.session(), cmd);
 457 }
 458
 459
 460 void
 461 MidiRegionView::clear_events()
 462 {
 463         clear_selection();
 464
 465         MidiGhostRegion* gr;
 466         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 467                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 468                         gr->clear_events();
 469                 }
 470         }
 471
 472         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 473                 delete *i;
 474         }
 475
 476         _events.clear();
 477         _pgm_changes.clear();
 478 }
 479
 480
 481 void
 482 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 483 {
 484         _model = model;
 485         if (_enable_display) {
 486                 redisplay_model();
 487         }
 488 }
 489
 490
 491 void
 492 MidiRegionView::start_delta_command(string name)
 493 {
 494         if (!_delta_command) {
 495                 _delta_command = _model->new_delta_command(name);
 496         }
 497 }
 498
 499 void
 500 MidiRegionView::command_add_note(const boost::shared_ptr<NoteType> note, bool selected)
 501 {
 502         if (_delta_command) {
 503                 _delta_command->add(note);
 504         }
 505         if (selected) {
 506                 _marked_for_selection.insert(note);
 507         }
 508 }
 509
 510 void
 511 MidiRegionView::command_remove_note(ArdourCanvas::CanvasNoteEvent* ev)
 512 {
 513         if (_delta_command && ev->note()) {
 514                 _delta_command->remove(ev->note());
 515         }
 516 }
 517
 518 void
 519 MidiRegionView::apply_command()
 520 {
 521         if (!_delta_command) {
 522                 return;
 523         }
 524
 525         // Mark all selected notes for selection when model reloads
 526         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 527                 _marked_for_selection.insert((*i)->note());
 528         }
 529
 530         _model->apply_command(trackview.session(), _delta_command);
 531         _delta_command = NULL;
 532         midi_view()->midi_track()->diskstream()->playlist_modified();
 533
 534         _marked_for_selection.clear();
 535 }
 536
 537
 538 void
 539 MidiRegionView::abort_command()
 540 {
 541         delete _delta_command;
 542         _delta_command = NULL;
 543         clear_selection();
 544 }
 545
 546
 547 void
 548 MidiRegionView::redisplay_model()
 549 {
 550         // Don't redisplay the model if we're currently recording and displaying that
 551         if (_active_notes) {
 552                 return;
 553         }
 554
 555         if (_model) {
 556                 clear_events();
 557                 _model->read_lock();
 558
 559                 MidiModel::Notes notes = _model->notes();
 560                 /*
 561                 cerr << _model->midi_source()->name() << " : redisplaying " << notes.size() << endl;
 562                 for (MidiModel::Notes::iterator i = notes.begin(); i != notes.end(); ++i) {
 563                         cerr << "NOTE  time: " << (*i)->time()
 564                                  << "  pitch: " << int((*i)->note())
 565                              << "  length: " << (*i)->length()
 566                              << "  end-time: " << (*i)->end_time()
 567                              << "  velocity: " << int((*i)->velocity())
 568                              << endl;
 569                 }
 570                 */
 571
 572                 for (size_t i = 0; i < _model->n_notes(); ++i) {
 573                         add_note(_model->note_at(i));
 574                 }
 575
 576                 display_program_change_flags();
 577
 578                 _model->read_unlock();
 579
 580         } else {
 581                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
 582         }
 583 }
 584
 585 void
 586 MidiRegionView::display_program_change_flags()
 587 {
 588         for (Automatable::Controls::iterator control = _model->controls().begin();
 589                         control != _model->controls().end(); ++control) {
 590                 if (control->first.type() == MidiPgmChangeAutomation) {
 591                         Glib::Mutex::Lock list_lock (control->second->list()->lock());
 592
 593                         uint8_t channel = control->first.channel();
 594
 595                         for (AutomationList::const_iterator event = control->second->list()->begin();
 596                                         event != control->second->list()->end(); ++event) {
 597                                 double event_time     = (*event)->when;
 598                                 double program_number = floor((*event)->value + 0.5);
 599
 600                                 //cerr << " got program change on channel " << int(channel)
 601                                 //              << " time: " << event_time << " number: " << program_number << endl;
 602
 603                                 // find bank select msb and lsb for the program change
 604                                 Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
 605                                 boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
 606                                 uint8_t msb = 0;
 607                                 if (msb_control != 0) {
 608                                         msb = uint8_t(floor(msb_control->get_float(true, event_time) + 0.5));
 609                                 }
 610
 611                                 Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
 612                                 boost::shared_ptr<Evoral::Control>  lsb_control = _model->control(bank_select_lsb);
 613                                 uint8_t lsb = 0;
 614                                 if (lsb_control != 0) {
 615                                         lsb = uint8_t(floor(lsb_control->get_float(true, event_time) + 0.5));
 616                                 }
 617
 618                                 //cerr << " got msb " << int(msb) << " and lsb " << int(lsb)
 619                                 //              << " thread_id: " << pthread_self() << endl;
 620
 621                                 MIDI::Name::PatchPrimaryKey patch_key(msb, lsb, program_number);
 622
 623                                 boost::shared_ptr<MIDI::Name::Patch> patch =
 624                                         MIDI::Name::MidiPatchManager::instance().find_patch(
 625                                                         _model_name,
 626                                                         _custom_device_mode,
 627                                                         channel,
 628                                                         patch_key);
 629
 630                                 ControlEvent program_change(beats_to_frames(event_time),
 631                                                 uint8_t(program_number), channel);
 632
 633                                 if (patch != 0) {
 634                                         //cerr << " got patch with name " << patch->name()
 635                                         //              << " number " << patch->number() << endl;
 636                                         add_pgm_change(program_change, patch->name());
 637                                 } else {
 638                                         char buf[4];
 639                                         snprintf(buf, 4, "%d", int(program_number));
 640                                         add_pgm_change(program_change, buf);
 641                                 }
 642                         }
 643                         break;
 644                 }
 645         }
 646 }
 647
 648
 649 MidiRegionView::~MidiRegionView ()
 650 {
 651         in_destructor = true;
 652
 653         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 654
 655         if (_active_notes) {
 656                 end_write();
 657         }
 658
 659         _selection.clear();
 660         clear_events();
 661         delete _note_group;
 662         delete _delta_command;
 663 }
 664
 665
 666 void
 667 MidiRegionView::region_resized (Change what_changed)
 668 {
 669         RegionView::region_resized(what_changed);
 670
 671         if (what_changed & ARDOUR::PositionChanged) {
 672                 if (_enable_display) {
 673                         redisplay_model();
 674                 }
 675         }
 676 }
 677
 678 void
 679 MidiRegionView::reset_width_dependent_items (double pixel_width)
 680 {
 681         RegionView::reset_width_dependent_items(pixel_width);
 682         assert(_pixel_width == pixel_width);
 683
 684         if (_enable_display) {
 685                 redisplay_model();
 686         }
 687 }
 688
 689 void
 690 MidiRegionView::set_height (double height)
 691 {
 692         static const double FUDGE = 2.0;
 693         const double old_height = _height;
 694         RegionView::set_height(height);
 695         _height = height - FUDGE;
 696
 697         apply_note_range(midi_stream_view()->lowest_note(),
 698                          midi_stream_view()->highest_note(),
 699                          height != old_height + FUDGE);
 700
 701         if (name_text) {
 702                 name_text->raise_to_top();
 703         }
 704 }
 705
 706
 707 /** Apply the current note range from the stream view
 708  * by repositioning/hiding notes as necessary
 709  */
 710 void
 711 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
 712 {
 713         if (_enable_display) {
 714                 if (!force && _current_range_min == min && _current_range_max == max) {
 715                         return;
 716                 }
 717
 718                 _current_range_min = min;
 719                 _current_range_max = max;
 720
 721                 for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
 722                         CanvasNoteEvent* event = *i;
 723                         Item* item = dynamic_cast<Item*>(event);
 724                         assert(item);
 725                         if (event && event->note()) {
 726                                 if (event->note()->note() < _current_range_min
 727                                                 || event->note()->note() > _current_range_max) {
 728                                         if (canvas_item_visible(item)) {
 729                                                 item->hide();
 730                                         }
 731                                 } else {
 732                                         if (!canvas_item_visible(item)) {
 733                                                 item->show();
 734                                         }
 735
 736                                         event->hide_velocity();
 737                                         if (CanvasNote* note = dynamic_cast<CanvasNote*>(event)) {
 738                                                 const double y1 = midi_stream_view()->note_to_y(event->note()->note());
 739                                                 const double y2 = y1 + floor(midi_stream_view()->note_height());
 740
 741                                                 note->property_y1() = y1;
 742                                                 note->property_y2() = y2;
 743                                         } else if (CanvasHit* hit = dynamic_cast<CanvasHit*>(event)) {
 744                                                 double x = trackview.editor().frame_to_pixel(
 745                                                                 beats_to_frames(event->note()->time()) - _region->start());
 746                                                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 747                                                 double y = midi_stream_view()->note_to_y(event->note()->note())
 748                                                                  + ((diamond_size-2.0) / 4.0);
 749
 750                                                 hit->set_height(diamond_size);
 751                                                 hit->move(x-hit->x1(), y-hit->y1());
 752                                                 hit->show();
 753                                         }
 754                                         if (event->selected()) {
 755                                                 event->show_velocity();
 756                                         }
 757                                 }
 758                         }
 759                 }
 760         }
 761 }
 762
 763 GhostRegion*
 764 MidiRegionView::add_ghost (TimeAxisView& tv)
 765 {
 766         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 767         CanvasNote* note;
 768         assert(rtv);
 769
 770         double unit_position = _region->position () / samples_per_unit;
 771         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
 772         MidiGhostRegion* ghost;
 773
 774         if (mtv && mtv->midi_view()) {
 775                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group.
 776                    this is because it's nice to have midi notes on top of the note lines and
 777                    audio waveforms under it.
 778                  */
 779                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
 780         } else {
 781                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
 782         }
 783
 784         ghost->set_height ();
 785         ghost->set_duration (_region->length() / samples_per_unit);
 786         ghosts.push_back (ghost);
 787
 788         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 789                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
 790                         ghost->add_note(note);
 791                 }
 792         }
 793
 794         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 795
 796         return ghost;
 797 }
 798
 799
 800 /** Begin tracking note state for successive calls to add_event
 801  */
 802 void
 803 MidiRegionView::begin_write()
 804 {
 805         assert(!_active_notes);
 806         _active_notes = new CanvasNote*[128];
 807         for (unsigned i=0; i < 128; ++i) {
 808                 _active_notes[i] = NULL;
 809         }
 810 }
 811
 812
 813 /** Destroy note state for add_event
 814  */
 815 void
 816 MidiRegionView::end_write()
 817 {
 818         delete[] _active_notes;
 819         _active_notes = NULL;
 820         _marked_for_selection.clear();
 821 }
 822
 823
 824 /** Resolve an active MIDI note (while recording).
 825  */
 826 void
 827 MidiRegionView::resolve_note(uint8_t note, double end_time)
 828 {
 829         if (midi_view()->note_mode() != Sustained) {
 830                 return;
 831         }
 832
 833         if (_active_notes && _active_notes[note]) {
 834                 _active_notes[note]->property_x2() = trackview.editor().frame_to_pixel((nframes64_t)end_time);
 835                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 836                 _active_notes[note] = NULL;
 837         }
 838 }
 839
 840
 841 /** Extend active notes to rightmost edge of region (if length is changed)
 842  */
 843 void
 844 MidiRegionView::extend_active_notes()
 845 {
 846         if (!_active_notes) {
 847                 return;
 848         }
 849
 850         for (unsigned i=0; i < 128; ++i) {
 851                 if (_active_notes[i]) {
 852                         _active_notes[i]->property_x2() = trackview.editor().frame_to_pixel(_region->length());
 853                 }
 854         }
 855 }
 856
 857 void
 858 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
 859 {
 860         if (!trackview.editor().sound_notes()) {
 861                 return;
 862         }
 863
 864         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
 865         assert(route_ui);
 866
 867         route_ui->midi_track()->write_immediate_event(
 868                         note->on_event().size(), note->on_event().buffer());
 869
 870         const double note_length_beats = (note->off_event().time() - note->on_event().time());
 871         nframes_t note_length_ms = beats_to_frames(note_length_beats)
 872                         * (1000 / (double)route_ui->session().nominal_frame_rate());
 873         Glib::signal_timeout().connect(bind(mem_fun(this, &MidiRegionView::play_midi_note_off), note),
 874                         note_length_ms, G_PRIORITY_DEFAULT);
 875 }
 876
 877 bool
 878 MidiRegionView::play_midi_note_off(boost::shared_ptr<NoteType> note)
 879 {
 880         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
 881         assert(route_ui);
 882
 883         route_ui->midi_track()->write_immediate_event(
 884                         note->off_event().size(), note->off_event().buffer());
 885
 886         return false;
 887 }
 888
 889 bool
 890 MidiRegionView::note_in_visible_range(const boost::shared_ptr<NoteType> note) const
 891 {
 892         const nframes64_t note_start_frames = beats_to_frames(note->time());
 893         bool outside = (note_start_frames - _region->start() >= _region->length())
 894                         || (note_start_frames < _region->start())
 895                         || (note->note() < midi_stream_view()->lowest_note())
 896                         || (note->note() > midi_stream_view()->highest_note());
 897         return !outside;
 898 }
 899
 900 /** Add a MIDI note to the view (with length).
 901  *
 902  * If in sustained mode, notes with length 0 will be considered active
 903  * notes, and resolve_note should be called when the corresponding note off
 904  * event arrives, to properly display the note.
 905  */
 906 void
 907 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note)
 908 {
 909         assert(note->time() >= 0);
 910         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
 911
 912         const nframes64_t note_start_frames = beats_to_frames(note->time());
 913         const nframes64_t note_end_frames   = beats_to_frames(note->end_time());
 914
 915         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 916
 917         CanvasNoteEvent* event = 0;
 918
 919         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
 920
 921         if (midi_view()->note_mode() == Sustained) {
 922                 const double y1 = midi_stream_view()->note_to_y(note->note());
 923                 const double note_endpixel =
 924                         trackview.editor().frame_to_pixel(note_end_frames - _region->start());
 925
 926                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
 927                 ev_rect->property_x1() = x;
 928                 ev_rect->property_y1() = y1;
 929                 if (note->length() > 0) {
 930                         ev_rect->property_x2() = note_endpixel;
 931                 } else {
 932                         ev_rect->property_x2() = trackview.editor().frame_to_pixel(_region->length());
 933                 }
 934                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 935
 936                 if (note->length() == 0) {
 937                         if (_active_notes) {
 938                                 assert(note->note() < 128);
 939                                 // If this note is already active there's a stuck note,
 940                                 // finish the old note rectangle
 941                                 if (_active_notes[note->note()]) {
 942                                         CanvasNote* const old_rect = _active_notes[note->note()];
 943                                         boost::shared_ptr<NoteType> old_note = old_rect->note();
 944                                         cerr << "MidiModel: WARNING: Note has length 0: chan " << old_note->channel()
 945                                                 << "note " << (int)old_note->note() << " @ " << old_note->time() << endl;
 946                                         /* FIXME: How large to make it?  Make it a diamond? */
 947                                         old_rect->property_x2() = old_rect->property_x1() + 2.0;
 948                                         old_rect->property_outline_what() = (guint32) 0xF;
 949                                 }
 950                                 _active_notes[note->note()] = ev_rect;
 951                         }
 952                         /* outline all but right edge */
 953                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 954                 } else {
 955                         /* outline all edges */
 956                         ev_rect->property_outline_what() = (guint32) 0xF;
 957                 }
 958
 959                 event = ev_rect;
 960
 961                 MidiGhostRegion* gr;
 962                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 963                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 964                                 gr->add_note(ev_rect);
 965                         }
 966                 }
 967
 968         } else if (midi_view()->note_mode() == Percussive) {
 969                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 970                 const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
 971
 972                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
 973                 ev_diamond->move(x, y);
 974                 event = ev_diamond;
 975         } else {
 976                 event = 0;
 977         }
 978
 979         if (event) {
 980                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
 981                         note_selected(event, true);
 982                 }
 983                 event->on_channel_selection_change(_last_channel_selection);
 984                 _events.push_back(event);
 985                 if (note_in_visible_range(note)) {
 986                         event->show();
 987                 } else {
 988                         event->hide();
 989                 }
 990         }
 991 }
 992
 993 void
 994 MidiRegionView::add_pgm_change(ControlEvent& program, string displaytext)
 995 {
 996         assert(program.time >= 0);
 997
 998         // dont display program changes beyond the region bounds
 999         if (program.time - _region->start() >= _region->length() || program.time <  _region->start())
1000                 return;
1001
1002         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1003         const double x = trackview.editor().frame_to_pixel((nframes64_t)program.time - _region->start());
1004
1005         double height = midi_stream_view()->contents_height();
1006
1007         boost::shared_ptr<CanvasProgramChange> pgm_change = boost::shared_ptr<CanvasProgramChange>(
1008                         new CanvasProgramChange(
1009                                         *this,
1010                                         *group,
1011                                         displaytext,
1012                                         height,
1013                                         x,
1014                                         1.0,
1015                                         _model_name,
1016                                         _custom_device_mode,
1017                                         program.time,
1018                                         program.channel,
1019                                         program.value));
1020
1021         _pgm_changes.push_back(pgm_change);
1022 }
1023
1024 void
1025 MidiRegionView::get_patch_key_at(double time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1026 {
1027         cerr << "getting patch key at " << time << " for channel " << channel << endl;
1028         Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1029         boost::shared_ptr<Evoral::Control>  msb_control = _model->control(bank_select_msb);
1030         float msb = -1.0;
1031         if (msb_control != 0) {
1032                 msb = int(msb_control->get_float(true, time));
1033                 cerr << "got msb " << msb;
1034         }
1035
1036         Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1037         boost::shared_ptr<Evoral::Control>  lsb_control = _model->control(bank_select_lsb);
1038         float lsb = -1.0;
1039         if (lsb_control != 0) {
1040                 lsb = lsb_control->get_float(true, time);
1041                 cerr << " got lsb " << lsb;
1042         }
1043
1044         Evoral::Parameter program_change(MidiPgmChangeAutomation, channel, 0);
1045         boost::shared_ptr<Evoral::Control>  program_control = _model->control(program_change);
1046         float program_number = -1.0;
1047         if (program_control != 0) {
1048                 program_number = program_control->get_float(true, time);
1049                 cerr << " got program " << program_number << endl;
1050         }
1051
1052         key.msb = (int) floor(msb + 0.5);
1053         key.lsb = (int) floor(lsb + 0.5);
1054         key.program_number = (int) floor(program_number + 0.5);
1055         assert(key.is_sane());
1056 }
1057
1058
1059 void
1060 MidiRegionView::alter_program_change(ControlEvent& old_program, const MIDI::Name::PatchPrimaryKey& new_patch)
1061 {
1062         // TODO: Get the real event here and alter them at the original times
1063         Evoral::Parameter bank_select_msb(MidiCCAutomation, old_program.channel, MIDI_CTL_MSB_BANK);
1064         boost::shared_ptr<Evoral::Control>  msb_control = _model->control(bank_select_msb);
1065         if (msb_control != 0) {
1066                 msb_control->set_float(float(new_patch.msb), true, old_program.time);
1067         }
1068
1069         // TODO: Get the real event here and alter them at the original times
1070         Evoral::Parameter bank_select_lsb(MidiCCAutomation, old_program.channel, MIDI_CTL_LSB_BANK);
1071         boost::shared_ptr<Evoral::Control>  lsb_control = _model->control(bank_select_lsb);
1072         if (lsb_control != 0) {
1073                 lsb_control->set_float(float(new_patch.lsb), true, old_program.time);
1074         }
1075
1076         Evoral::Parameter program_change(MidiPgmChangeAutomation, old_program.channel, 0);
1077         boost::shared_ptr<Evoral::Control>  program_control = _model->control(program_change);
1078
1079         assert(program_control != 0);
1080         program_control->set_float(float(new_patch.program_number), true, old_program.time);
1081
1082         redisplay_model();
1083 }
1084
1085 void
1086 MidiRegionView::program_selected(CanvasProgramChange& program, const MIDI::Name::PatchPrimaryKey& new_patch)
1087 {
1088         ControlEvent program_change_event(program.event_time(), program.program(), program.channel());
1089         alter_program_change(program_change_event, new_patch);
1090 }
1091
1092 void
1093 MidiRegionView::previous_program(CanvasProgramChange& program)
1094 {
1095         MIDI::Name::PatchPrimaryKey key;
1096         get_patch_key_at(program.event_time(), program.channel(), key);
1097
1098         boost::shared_ptr<MIDI::Name::Patch> patch =
1099                 MIDI::Name::MidiPatchManager::instance().previous_patch(
1100                                 _model_name,
1101                                 _custom_device_mode,
1102                                 program.channel(),
1103                                 key);
1104
1105         ControlEvent program_change_event(program.event_time(), program.program(), program.channel());
1106         if (patch) {
1107                 alter_program_change(program_change_event, patch->patch_primary_key());
1108         }
1109 }
1110
1111 void
1112 MidiRegionView::next_program(CanvasProgramChange& program)
1113 {
1114         MIDI::Name::PatchPrimaryKey key;
1115         get_patch_key_at(program.event_time(), program.channel(), key);
1116
1117         boost::shared_ptr<MIDI::Name::Patch> patch =
1118                 MIDI::Name::MidiPatchManager::instance().next_patch(
1119                                 _model_name,
1120                                 _custom_device_mode,
1121                                 program.channel(),
1122                                 key);
1123         ControlEvent program_change_event(program.event_time(), program.program(), program.channel());
1124         if (patch) {
1125                 alter_program_change(program_change_event, patch->patch_primary_key());
1126         }
1127 }
1128
1129 void
1130 MidiRegionView::delete_selection()
1131 {
1132         assert(_delta_command);
1133
1134         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1135                 if ((*i)->selected()) {
1136                         _delta_command->remove((*i)->note());
1137                 }
1138         }
1139
1140         _selection.clear();
1141 }
1142
1143 void
1144 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1145 {
1146         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1147                 if ((*i)->selected() && (*i) != ev) {
1148                         (*i)->selected(false);
1149                 }
1150         }
1151
1152         _selection.clear();
1153 }
1154
1155 void
1156 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1157 {
1158         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1159                 if ((*i) != ev) {
1160                         (*i)->selected(false);
1161                 }
1162         }
1163
1164         _selection.clear();
1165         _selection.insert(ev);
1166
1167         if ( ! ev->selected()) {
1168                 ev->selected(true);
1169         }
1170 }
1171
1172 void
1173 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
1174 {
1175         if ( ! add) {
1176                 clear_selection_except(ev);
1177         }
1178
1179         if (_selection.insert(ev).second) {
1180                 play_midi_note(ev->note());
1181         }
1182
1183         if ( ! ev->selected()) {
1184                 ev->selected(true);
1185         }
1186 }
1187
1188
1189 void
1190 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
1191 {
1192         if ( ! add) {
1193                 clear_selection_except(ev);
1194         }
1195
1196         _selection.erase(ev);
1197
1198         if (ev->selected()) {
1199                 ev->selected(false);
1200         }
1201 }
1202
1203
1204 void
1205 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
1206 {
1207         const double last_y = std::min(y1, y2);
1208         const double y      = std::max(y1, y2);
1209
1210         // TODO: Make this faster by storing the last updated selection rect, and only
1211         // adjusting things that are in the area that appears/disappeared.
1212         // We probably need a tree to be able to find events in O(log(n)) time.
1213
1214 #ifndef NDEBUG
1215         double last_x1 = 0.0;
1216 #endif
1217
1218         if (x1 < x2) {
1219                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1220 #ifndef NDEBUG
1221                         // Events should always be sorted by increasing x1() here
1222                         assert((*i)->x1() >= last_x1);
1223                         last_x1 = (*i)->x1();
1224 #endif
1225                         // Inside rectangle
1226                         if ((*i)->x1() >= x1 && (*i)->x1() <= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
1227                                 if (!(*i)->selected()) {
1228                                         (*i)->selected(true);
1229                                         _selection.insert(*i);
1230                                         play_midi_note((*i)->note());
1231                                 }
1232                         // Not inside rectangle
1233                         } else if ((*i)->selected()) {
1234                                 (*i)->selected(false);
1235                                 _selection.erase(*i);
1236                         }
1237                 }
1238         } else {
1239                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1240 #ifndef NDEBUG
1241                         // Events should always be sorted by increasing x1() here
1242                         assert((*i)->x1() >= last_x1);
1243                         last_x1 = (*i)->x1();
1244 #endif
1245                         // Inside rectangle
1246                         if ((*i)->x2() <= x1 && (*i)->x2() >= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
1247                                 if (!(*i)->selected()) {
1248                                         (*i)->selected(true);
1249                                         _selection.insert(*i);
1250                                         play_midi_note((*i)->note());
1251                                 }
1252                         // Not inside rectangle
1253                         } else if ((*i)->selected()) {
1254                                 (*i)->selected(false);
1255                                 _selection.erase(*i);
1256                         }
1257                 }
1258         }
1259 }
1260
1261
1262 void
1263 MidiRegionView::move_selection(double dx, double dy)
1264 {
1265         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
1266                 (*i)->move_event(dx, dy);
1267 }
1268
1269
1270 void
1271 MidiRegionView::note_dropped(CanvasNoteEvent* ev, double dt, uint8_t dnote)
1272 {
1273         // TODO: This would be faster/nicer with a MoveCommand that doesn't need to copy...
1274         if (_selection.find(ev) != _selection.end()) {
1275                 uint8_t lowest_note_in_selection  = midi_stream_view()->lowest_note();
1276                 uint8_t highest_note_in_selection = midi_stream_view()->highest_note();
1277                 uint8_t highest_note_difference = 0;
1278
1279                 // find highest and lowest notes first
1280                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1281                         uint8_t pitch = (*i)->note()->note();
1282                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
1283                         highest_note_in_selection = std::max(highest_note_in_selection, pitch);
1284                 }
1285
1286                 /*
1287                 cerr << "dnote: " << (int) dnote << endl;
1288                 cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
1289                      << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
1290                 cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
1291                      << int(highest_note_in_selection) << endl;
1292                 cerr << "selection size: " << _selection.size() << endl;
1293                 cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
1294                 */
1295
1296                 // Make sure the note pitch does not exceed the MIDI standard range
1297                 if (dnote <= 127 && (highest_note_in_selection + dnote > 127)) {
1298                         highest_note_difference = highest_note_in_selection - 127;
1299                 }
1300
1301                 start_delta_command(_("move notes"));
1302
1303                 for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ) {
1304                         Selection::iterator next = i;
1305                         ++next;
1306
1307                         const boost::shared_ptr<NoteType> copy(new NoteType(*(*i)->note().get()));
1308
1309                         // we need to snap here again in nframes64_t in order to be sample accurate
1310                         double start_frames = snap_to_frame(beats_to_frames((*i)->note()->time()) + dt);
1311
1312                         // keep notes inside region if dragged beyond left region bound
1313                         if (start_frames < _region->start()) {
1314                                 start_frames = _region->start();
1315                         }
1316
1317                         copy->set_time(frames_to_beats(start_frames));
1318
1319                         uint8_t original_pitch = (*i)->note()->note();
1320                         uint8_t new_pitch = original_pitch + dnote - highest_note_difference;
1321
1322                         // keep notes in standard midi range
1323                         clamp_to_0_127(new_pitch);
1324
1325                         // keep original pitch if note is dragged outside valid midi range
1326                         if ((original_pitch != 0 && new_pitch == 0)
1327                                         || (original_pitch != 127 && new_pitch == 127)) {
1328                                 new_pitch = original_pitch;
1329                         }
1330
1331                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
1332                         highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
1333
1334                         copy->set_note(new_pitch);
1335
1336                         command_remove_note(*i);
1337                         command_add_note(copy, (*i)->selected());
1338
1339                         i = next;
1340                 }
1341
1342                 apply_command();
1343
1344                 // care about notes being moved beyond the upper/lower bounds on the canvas
1345                 if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
1346                                 highest_note_in_selection > midi_stream_view()->highest_note()) {
1347                         midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
1348                 }
1349         }
1350 }
1351
1352 nframes64_t
1353 MidiRegionView::snap_to_frame(double x)
1354 {
1355         PublicEditor &editor = trackview.editor();
1356         // x is region relative, convert it to global absolute frames
1357         nframes64_t frame = editor.pixel_to_frame(x) + _region->position();
1358         editor.snap_to(frame);
1359         return frame - _region->position(); // convert back to region relative
1360 }
1361
1362 nframes64_t
1363 MidiRegionView::snap_to_frame(nframes64_t x)
1364 {
1365         PublicEditor &editor = trackview.editor();
1366         // x is region relative
1367         // convert x to global frame
1368         nframes64_t frame = x + _region->position();
1369         editor.snap_to(frame);
1370         // convert event_frame back to local coordinates relative to position
1371         frame -= _region->position();
1372         return frame;
1373 }
1374
1375 double
1376 MidiRegionView::snap_to_pixel(double x)
1377 {
1378         return (double) trackview.editor().frame_to_pixel(snap_to_frame(x));
1379 }
1380
1381 double
1382 MidiRegionView::get_position_pixels()
1383 {
1384         nframes64_t region_frame = get_position();
1385         return trackview.editor().frame_to_pixel(region_frame);
1386 }
1387
1388 nframes64_t
1389 MidiRegionView::beats_to_frames(double beats) const
1390 {
1391         return midi_region()->midi_source()->time_converter().to(beats);
1392 }
1393
1394 double
1395 MidiRegionView::frames_to_beats(nframes64_t frames) const
1396 {
1397         return midi_region()->midi_source()->time_converter().from(frames);
1398 }
1399
1400 void
1401 MidiRegionView::begin_resizing(CanvasNote::NoteEnd note_end)
1402 {
1403         _resize_data.clear();
1404
1405         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1406                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
1407
1408                 // only insert CanvasNotes into the map
1409                 if (note) {
1410                         NoteResizeData *resize_data = new NoteResizeData();
1411                         resize_data->canvas_note = note;
1412
1413                         // create a new SimpleRect from the note which will be the resize preview
1414                         SimpleRect *resize_rect = new SimpleRect(
1415                                         *group, note->x1(), note->y1(), note->x2(), note->y2());
1416
1417                         // calculate the colors: get the color settings
1418                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
1419                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
1420                                         128);
1421
1422                         // make the resize preview notes more transparent and bright
1423                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
1424
1425                         // calculate color based on note velocity
1426                         resize_rect->property_fill_color_rgba() = UINT_INTERPOLATE(
1427                                         CanvasNoteEvent::meter_style_fill_color(note->note()->velocity()),
1428                                         fill_color,
1429                                         0.85);
1430
1431                         resize_rect->property_outline_color_rgba() = CanvasNoteEvent::calculate_outline(
1432                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
1433
1434                         resize_data->resize_rect = resize_rect;
1435
1436                         if (note_end == CanvasNote::NOTE_ON) {
1437                                 resize_data->current_x = note->x1();
1438                         } else { // NOTE_OFF
1439                                 resize_data->current_x = note->x2();
1440                         }
1441
1442                         _resize_data.push_back(resize_data);
1443                 }
1444         }
1445 }
1446
1447 void
1448 MidiRegionView::update_resizing(CanvasNote::NoteEnd note_end, double x, bool relative)
1449 {
1450         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1451                 SimpleRect* resize_rect = (*i)->resize_rect;
1452                 CanvasNote* canvas_note = (*i)->canvas_note;
1453
1454                 const double region_start = get_position_pixels();
1455
1456                 if (relative) {
1457                         (*i)->current_x = (*i)->current_x + x;
1458                 } else {
1459                         // x is in track relative, transform it to region relative
1460                         (*i)->current_x = x - region_start;
1461                 }
1462
1463                 double current_x = (*i)->current_x;
1464
1465                 if (note_end == CanvasNote::NOTE_ON) {
1466                         resize_rect->property_x1() = snap_to_pixel(current_x);
1467                         resize_rect->property_x2() = canvas_note->x2();
1468                 } else {
1469                         resize_rect->property_x2() = snap_to_pixel(current_x);
1470                         resize_rect->property_x1() = canvas_note->x1();
1471                 }
1472         }
1473 }
1474
1475 void
1476 MidiRegionView::commit_resizing(CanvasNote::NoteEnd note_end, double event_x, bool relative)
1477 {
1478         start_delta_command(_("resize notes"));
1479
1480         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1481                 CanvasNote*  canvas_note = (*i)->canvas_note;
1482                 SimpleRect*  resize_rect = (*i)->resize_rect;
1483                 double       current_x   = (*i)->current_x;
1484                 const double position    = get_position_pixels();
1485
1486                 if (!relative) {
1487                         // event_x is in track relative, transform it to region relative
1488                         current_x = event_x - position;
1489                 }
1490
1491                 // because snapping works on world coordinates we have to transform current_x
1492                 // to world coordinates before snapping and transform it back afterwards
1493                 nframes64_t current_frame = snap_to_frame(current_x);
1494                 // transform to region start relative
1495                 current_frame += _region->start();
1496
1497                 const boost::shared_ptr<NoteType> copy(new NoteType(*(canvas_note->note().get())));
1498
1499                 // resize beginning of note
1500                 if (note_end == CanvasNote::NOTE_ON && current_frame < copy->end_time()) {
1501                         command_remove_note(canvas_note);
1502                         copy->on_event().time() = current_frame;
1503                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1504                 }
1505                 // resize end of note
1506                 if (note_end == CanvasNote::NOTE_OFF && current_frame > copy->time()) {
1507                         command_remove_note(canvas_note);
1508                         copy->off_event().time() = current_frame;
1509                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1510                 }
1511
1512                 delete resize_rect;
1513                 delete (*i);
1514         }
1515
1516         _resize_data.clear();
1517         apply_command();
1518 }
1519
1520 void
1521 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
1522 {
1523         const boost::shared_ptr<NoteType> copy(new NoteType(*(event->note().get())));
1524
1525         if (relative) {
1526                 uint8_t new_velocity = copy->velocity() + velocity;
1527                 clamp_to_0_127(new_velocity);
1528                 copy->set_velocity(new_velocity);
1529         } else {
1530                 copy->set_velocity(velocity);
1531         }
1532
1533         command_remove_note(event);
1534         command_add_note(copy, event->selected());
1535 }
1536
1537 void
1538 MidiRegionView::change_velocity(CanvasNoteEvent* ev, int8_t velocity, bool relative)
1539 {
1540         start_delta_command(_("change velocity"));
1541
1542         change_note_velocity(ev, velocity, relative);
1543
1544         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1545                 Selection::iterator next = i;
1546                 ++next;
1547                 if ( !(*((*i)->note()) == *(ev->note())) ) {
1548                         change_note_velocity(*i, velocity, relative);
1549                 }
1550                 i = next;
1551         }
1552
1553         apply_command();
1554 }
1555
1556 void
1557 MidiRegionView::change_channel(uint8_t channel)
1558 {
1559         start_delta_command(_("change channel"));
1560         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1561                 Selection::iterator next = i;
1562                 ++next;
1563
1564                 CanvasNoteEvent* event = *i;
1565                 const boost::shared_ptr<NoteType> copy(new NoteType(*(event->note().get())));
1566
1567                 copy->set_channel(channel);
1568
1569                 command_remove_note(event);
1570                 command_add_note(copy, event->selected());
1571
1572                 i = next;
1573         }
1574
1575         apply_command();
1576 }
1577
1578
1579 void
1580 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
1581 {
1582         if (ev->note() && _mouse_state == EraseTouchDragging) {
1583                 start_delta_command(_("note entered"));
1584                 ev->selected(true);
1585                 _delta_command->remove(ev->note());
1586         } else if (_mouse_state == SelectTouchDragging) {
1587                 note_selected(ev, true);
1588         }
1589 }
1590
1591
1592 void
1593 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
1594 {
1595         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
1596         if (msrc)
1597                 display_model(msrc->model());
1598 }
1599
1600 void
1601 MidiRegionView::set_frame_color()
1602 {
1603         if (frame) {
1604                 if (_selected && should_show_selection) {
1605                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
1606                 } else {
1607                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
1608                 }
1609         }
1610 }
1611
1612 void
1613 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
1614 {
1615         switch (mode) {
1616         case AllChannels:
1617         case FilterChannels:
1618                 _force_channel = -1;
1619                 break;
1620         case ForceChannel:
1621                 _force_channel = mask;
1622                 mask = 0xFFFF; // Show all notes as active (below)
1623         };
1624
1625         // Update notes for selection
1626         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1627                 (*i)->on_channel_selection_change(mask);
1628         }
1629
1630         _last_channel_selection = mask;
1631 }
1632
1633 void
1634 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
1635 {
1636         _model_name         = model;
1637         _custom_device_mode = custom_device_mode;
1638         redisplay_model();
1639 }
1640