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