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(nframes_t(event_time), uint8_t(program_number), channel);
 631
 632                                 if (patch != 0) {
 633                                         //cerr << " got patch with name " << patch->name()
 634                                         //              << " number " << patch->number() << endl;
 635                                         add_pgm_change(program_change, patch->name());
 636                                 } else {
 637                                         char buf[4];
 638                                         snprintf(buf, 4, "%d", int(program_number));
 639                                         add_pgm_change(program_change, buf);
 640                                 }
 641                         }
 642                         break;
 643                 } else if (control->first.type() == MidiCCAutomation) {
 644                         //cerr << " found CC Automation of channel " << int(control->first.channel())
 645                         //              << " and id " << control->first.id() << endl;
 646                 }
 647         }
 648 }
 649
 650
 651 MidiRegionView::~MidiRegionView ()
 652 {
 653         in_destructor = true;
 654
 655         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 656
 657         if (_active_notes) {
 658                 end_write();
 659         }
 660
 661         _selection.clear();
 662         clear_events();
 663         delete _note_group;
 664         delete _delta_command;
 665 }
 666
 667
 668 void
 669 MidiRegionView::region_resized (Change what_changed)
 670 {
 671         RegionView::region_resized(what_changed);
 672
 673         if (what_changed & ARDOUR::PositionChanged) {
 674                 if (_enable_display) {
 675                         redisplay_model();
 676                 }
 677         }
 678 }
 679
 680 void
 681 MidiRegionView::reset_width_dependent_items (double pixel_width)
 682 {
 683         RegionView::reset_width_dependent_items(pixel_width);
 684         assert(_pixel_width == pixel_width);
 685
 686         if (_enable_display) {
 687                 redisplay_model();
 688         }
 689 }
 690
 691 void
 692 MidiRegionView::set_height (double height)
 693 {
 694         static const double FUDGE = 2.0;
 695         const double old_height = _height;
 696         RegionView::set_height(height);
 697         _height = height - FUDGE;
 698
 699         apply_note_range(midi_stream_view()->lowest_note(),
 700                          midi_stream_view()->highest_note(),
 701                          height != old_height + FUDGE);
 702
 703         if (name_text) {
 704                 name_text->raise_to_top();
 705         }
 706 }
 707
 708
 709 /** Apply the current note range from the stream view
 710  * by repositioning/hiding notes as necessary
 711  */
 712 void
 713 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
 714 {
 715         if (_enable_display) {
 716                 if (!force && _current_range_min == min && _current_range_max == max) {
 717                         return;
 718                 }
 719
 720                 _current_range_min = min;
 721                 _current_range_max = max;
 722
 723                 for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
 724                         CanvasNoteEvent* event = *i;
 725                         Item* item = dynamic_cast<Item*>(event);
 726                         assert(item);
 727                         if (event && event->note()) {
 728                                 if (event->note()->note() < _current_range_min
 729                                                 || event->note()->note() > _current_range_max) {
 730                                         if (canvas_item_visible(item)) {
 731                                                 item->hide();
 732                                         }
 733                                 } else {
 734                                         if (!canvas_item_visible(item)) {
 735                                                 item->show();
 736                                         }
 737
 738                                         event->hide_velocity();
 739                                         if (CanvasNote* note = dynamic_cast<CanvasNote*>(event)) {
 740                                                 const double y1 = midi_stream_view()->note_to_y(event->note()->note());
 741                                                 const double y2 = y1 + floor(midi_stream_view()->note_height());
 742
 743                                                 note->property_y1() = y1;
 744                                                 note->property_y2() = y2;
 745                                         } else if (CanvasHit* hit = dynamic_cast<CanvasHit*>(event)) {
 746                                                 double x = trackview.editor().frame_to_pixel((nframes64_t)
 747                                                                 event->note()->time() - _region->start());
 748                                                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 749                                                 double y = midi_stream_view()->note_to_y(event->note()->note())
 750                                                                  + ((diamond_size-2.0) / 4.0);
 751
 752                                                 hit->set_height(diamond_size);
 753                                                 hit->move(x-hit->x1(), y-hit->y1());
 754                                                 hit->show();
 755                                         }
 756                                         if (event->selected()) {
 757                                                 event->show_velocity();
 758                                         }
 759                                 }
 760                         }
 761                 }
 762         }
 763 }
 764
 765 GhostRegion*
 766 MidiRegionView::add_ghost (TimeAxisView& tv)
 767 {
 768         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 769         CanvasNote* note;
 770         assert(rtv);
 771
 772         double unit_position = _region->position () / samples_per_unit;
 773         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
 774         MidiGhostRegion* ghost;
 775
 776         if (mtv && mtv->midi_view()) {
 777                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group.
 778                    this is because it's nice to have midi notes on top of the note lines and
 779                    audio waveforms under it.
 780                  */
 781                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
 782         } else {
 783                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
 784         }
 785
 786         ghost->set_height ();
 787         ghost->set_duration (_region->length() / samples_per_unit);
 788         ghosts.push_back (ghost);
 789
 790         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 791                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
 792                         ghost->add_note(note);
 793                 }
 794         }
 795
 796         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 797
 798         return ghost;
 799 }
 800
 801
 802 /** Begin tracking note state for successive calls to add_event
 803  */
 804 void
 805 MidiRegionView::begin_write()
 806 {
 807         assert(!_active_notes);
 808         _active_notes = new CanvasNote*[128];
 809         for (unsigned i=0; i < 128; ++i) {
 810                 _active_notes[i] = NULL;
 811         }
 812 }
 813
 814
 815 /** Destroy note state for add_event
 816  */
 817 void
 818 MidiRegionView::end_write()
 819 {
 820         delete[] _active_notes;
 821         _active_notes = NULL;
 822         _marked_for_selection.clear();
 823 }
 824
 825
 826 /** Resolve an active MIDI note (while recording).
 827  */
 828 void
 829 MidiRegionView::resolve_note(uint8_t note, double end_time)
 830 {
 831         if (midi_view()->note_mode() != Sustained) {
 832                 return;
 833         }
 834
 835         if (_active_notes && _active_notes[note]) {
 836                 _active_notes[note]->property_x2() = trackview.editor().frame_to_pixel((nframes64_t)end_time);
 837                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 838                 _active_notes[note] = NULL;
 839         }
 840 }
 841
 842
 843 /** Extend active notes to rightmost edge of region (if length is changed)
 844  */
 845 void
 846 MidiRegionView::extend_active_notes()
 847 {
 848         if (!_active_notes) {
 849                 return;
 850         }
 851
 852         for (unsigned i=0; i < 128; ++i) {
 853                 if (_active_notes[i]) {
 854                         _active_notes[i]->property_x2() = trackview.editor().frame_to_pixel(_region->length());
 855                 }
 856         }
 857 }
 858
 859 void
 860 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
 861 {
 862         if (!trackview.editor().sound_notes()) {
 863                 return;
 864         }
 865
 866         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
 867         assert(route_ui);
 868
 869         route_ui->midi_track()->write_immediate_event(
 870                         note->on_event().size(), note->on_event().buffer());
 871
 872         const double note_length_beats = (note->off_event().time() - note->on_event().time());
 873         nframes_t note_length_ms = beats_to_frames(note_length_beats)
 874                         * (1000 / (double)route_ui->session().nominal_frame_rate());
 875         Glib::signal_timeout().connect(bind(mem_fun(this, &MidiRegionView::play_midi_note_off), note),
 876                         note_length_ms, G_PRIORITY_DEFAULT);
 877 }
 878
 879 bool
 880 MidiRegionView::play_midi_note_off(boost::shared_ptr<NoteType> note)
 881 {
 882         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
 883         assert(route_ui);
 884
 885         route_ui->midi_track()->write_immediate_event(
 886                         note->off_event().size(), note->off_event().buffer());
 887
 888         return false;
 889 }
 890
 891 bool
 892 MidiRegionView::note_in_visible_range(const boost::shared_ptr<NoteType> note) const
 893 {
 894         const nframes64_t note_start_frames = beats_to_frames(note->time());
 895         bool outside = (note_start_frames - _region->start() >= _region->length())
 896                         || (note_start_frames < _region->start())
 897                         || (note->note() < midi_stream_view()->lowest_note())
 898                         || (note->note() > midi_stream_view()->highest_note());
 899         return !outside;
 900 }
 901
 902 /** Add a MIDI note to the view (with length).
 903  *
 904  * If in sustained mode, notes with length 0 will be considered active
 905  * notes, and resolve_note should be called when the corresponding note off
 906  * event arrives, to properly display the note.
 907  */
 908 void
 909 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note)
 910 {
 911         assert(note->time() >= 0);
 912         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
 913
 914         const nframes64_t note_start_frames = beats_to_frames(note->time());
 915         const nframes64_t note_end_frames   = beats_to_frames(note->end_time());
 916
 917         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 918
 919         CanvasNoteEvent* event = 0;
 920
 921         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
 922
 923         if (midi_view()->note_mode() == Sustained) {
 924                 const double y1 = midi_stream_view()->note_to_y(note->note());
 925                 const double note_endpixel =
 926                         trackview.editor().frame_to_pixel(note_end_frames - _region->start());
 927
 928                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
 929                 ev_rect->property_x1() = x;
 930                 ev_rect->property_y1() = y1;
 931                 if (note->length() > 0) {
 932                         ev_rect->property_x2() = note_endpixel;
 933                 } else {
 934                         ev_rect->property_x2() = trackview.editor().frame_to_pixel(_region->length());
 935                 }
 936                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 937
 938                 if (note->length() == 0) {
 939                         if (_active_notes) {
 940                                 assert(note->note() < 128);
 941                                 // If this note is already active there's a stuck note,
 942                                 // finish the old note rectangle
 943                                 if (_active_notes[note->note()]) {
 944                                         CanvasNote* const old_rect = _active_notes[note->note()];
 945                                         boost::shared_ptr<NoteType> old_note = old_rect->note();
 946                                         cerr << "MidiModel: WARNING: Note has length 0: chan " << old_note->channel()
 947                                                 << "note " << (int)old_note->note() << " @ " << old_note->time() << endl;
 948                                         /* FIXME: How large to make it?  Make it a diamond? */
 949                                         old_rect->property_x2() = old_rect->property_x1() + 2.0;
 950                                         old_rect->property_outline_what() = (guint32) 0xF;
 951                                 }
 952                                 _active_notes[note->note()] = ev_rect;
 953                         }
 954                         /* outline all but right edge */
 955                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 956                 } else {
 957                         /* outline all edges */
 958                         ev_rect->property_outline_what() = (guint32) 0xF;
 959                 }
 960
 961                 event = ev_rect;
 962
 963                 MidiGhostRegion* gr;
 964                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 965                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 966                                 gr->add_note(ev_rect);
 967                         }
 968                 }
 969
 970         } else if (midi_view()->note_mode() == Percussive) {
 971                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 972                 const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
 973
 974                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
 975                 ev_diamond->move(x, y);
 976                 event = ev_diamond;
 977         } else {
 978                 event = 0;
 979         }
 980
 981         if (event) {
 982                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
 983                         note_selected(event, true);
 984                 }
 985                 event->on_channel_selection_change(_last_channel_selection);
 986                 _events.push_back(event);
 987                 if (note_in_visible_range(note)) {
 988                         event->show();
 989                 } else {
 990                         event->hide();
 991                 }
 992         }
 993 }
 994
 995 void
 996 MidiRegionView::add_pgm_change(ControlEvent& program, string displaytext)
 997 {
 998         assert(program.time >= 0);
 999
1000         // dont display program changes beyond the region bounds
1001         if (program.time - _region->start() >= _region->length() || program.time <  _region->start())
1002                 return;
1003
1004         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1005         const double x = trackview.editor().frame_to_pixel((nframes64_t)program.time - _region->start());
1006
1007         double height = midi_stream_view()->contents_height();
1008
1009         boost::shared_ptr<CanvasProgramChange> pgm_change = boost::shared_ptr<CanvasProgramChange>(
1010                         new CanvasProgramChange(
1011                                         *this,
1012                                         *group,
1013                                         displaytext,
1014                                         height,
1015                                         x,
1016                                         1.0,
1017                                         _model_name,
1018                                         _custom_device_mode,
1019                                         program.time,
1020                                         program.channel,
1021                                         program.value));
1022
1023         _pgm_changes.push_back(pgm_change);
1024 }
1025
1026 void
1027 MidiRegionView::get_patch_key_at(double time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1028 {
1029         cerr << "getting patch key at " << time << " for channel " << channel << endl;
1030         Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1031         boost::shared_ptr<Evoral::Control>  msb_control = _model->control(bank_select_msb);
1032         float msb = -1.0;
1033         if (msb_control != 0) {
1034                 msb = int(msb_control->get_float(true, time));
1035                 cerr << "got msb " << msb;
1036         }
1037
1038         Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1039         boost::shared_ptr<Evoral::Control>  lsb_control = _model->control(bank_select_lsb);
1040         float lsb = -1.0;
1041         if (lsb_control != 0) {
1042                 lsb = lsb_control->get_float(true, time);
1043                 cerr << " got lsb " << lsb;
1044         }
1045
1046         Evoral::Parameter program_change(MidiPgmChangeAutomation, channel, 0);
1047         boost::shared_ptr<Evoral::Control>  program_control = _model->control(program_change);
1048         float program_number = -1.0;
1049         if (program_control != 0) {
1050                 program_number = program_control->get_float(true, time);
1051                 cerr << " got program " << program_number << endl;
1052         }
1053
1054         key.msb = (int) floor(msb + 0.5);
1055         key.lsb = (int) floor(lsb + 0.5);
1056         key.program_number = (int) floor(program_number + 0.5);
1057         assert(key.is_sane());
1058 }
1059
1060
1061 void
1062 MidiRegionView::alter_program_change(ControlEvent& old_program, const MIDI::Name::PatchPrimaryKey& new_patch)
1063 {
1064         // TODO: Get the real event here and alter them at the original times
1065         Evoral::Parameter bank_select_msb(MidiCCAutomation, old_program.channel, MIDI_CTL_MSB_BANK);
1066         boost::shared_ptr<Evoral::Control>  msb_control = _model->control(bank_select_msb);
1067         if (msb_control != 0) {
1068                 msb_control->set_float(float(new_patch.msb), true, old_program.time);
1069         }
1070
1071         // TODO: Get the real event here and alter them at the original times
1072         Evoral::Parameter bank_select_lsb(MidiCCAutomation, old_program.channel, MIDI_CTL_LSB_BANK);
1073         boost::shared_ptr<Evoral::Control>  lsb_control = _model->control(bank_select_lsb);
1074         if (lsb_control != 0) {
1075                 lsb_control->set_float(float(new_patch.lsb), true, old_program.time);
1076         }
1077
1078         Evoral::Parameter program_change(MidiPgmChangeAutomation, old_program.channel, 0);
1079         boost::shared_ptr<Evoral::Control>  program_control = _model->control(program_change);
1080
1081         assert(program_control != 0);
1082         program_control->set_float(float(new_patch.program_number), true, old_program.time);
1083
1084         redisplay_model();
1085 }
1086
1087 void
1088 MidiRegionView::program_selected(CanvasProgramChange& program, const MIDI::Name::PatchPrimaryKey& new_patch)
1089 {
1090         ControlEvent program_change_event(program.event_time(), program.program(), program.channel());
1091         alter_program_change(program_change_event, new_patch);
1092 }
1093
1094 void
1095 MidiRegionView::previous_program(CanvasProgramChange& program)
1096 {
1097         MIDI::Name::PatchPrimaryKey key;
1098         get_patch_key_at(program.event_time(), program.channel(), key);
1099
1100         boost::shared_ptr<MIDI::Name::Patch> patch =
1101                 MIDI::Name::MidiPatchManager::instance().previous_patch(
1102                                 _model_name,
1103                                 _custom_device_mode,
1104                                 program.channel(),
1105                                 key);
1106
1107         ControlEvent program_change_event(program.event_time(), program.program(), program.channel());
1108         if (patch) {
1109                 alter_program_change(program_change_event, patch->patch_primary_key());
1110         }
1111 }
1112
1113 void
1114 MidiRegionView::next_program(CanvasProgramChange& program)
1115 {
1116         MIDI::Name::PatchPrimaryKey key;
1117         get_patch_key_at(program.event_time(), program.channel(), key);
1118
1119         boost::shared_ptr<MIDI::Name::Patch> patch =
1120                 MIDI::Name::MidiPatchManager::instance().next_patch(
1121                                 _model_name,
1122                                 _custom_device_mode,
1123                                 program.channel(),
1124                                 key);
1125         ControlEvent program_change_event(program.event_time(), program.program(), program.channel());
1126         if (patch) {
1127                 alter_program_change(program_change_event, patch->patch_primary_key());
1128         }
1129 }
1130
1131 void
1132 MidiRegionView::delete_selection()
1133 {
1134         assert(_delta_command);
1135
1136         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1137                 if ((*i)->selected()) {
1138                         _delta_command->remove((*i)->note());
1139                 }
1140         }
1141
1142         _selection.clear();
1143 }
1144
1145 void
1146 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1147 {
1148         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1149                 if ((*i)->selected() && (*i) != ev) {
1150                         (*i)->selected(false);
1151                 }
1152         }
1153
1154         _selection.clear();
1155 }
1156
1157 void
1158 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1159 {
1160         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1161                 if ((*i) != ev) {
1162                         (*i)->selected(false);
1163                 }
1164         }
1165
1166         _selection.clear();
1167         _selection.insert(ev);
1168
1169         if ( ! ev->selected()) {
1170                 ev->selected(true);
1171         }
1172 }
1173
1174 void
1175 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
1176 {
1177         if ( ! add) {
1178                 clear_selection_except(ev);
1179         }
1180
1181         if (_selection.insert(ev).second) {
1182                 play_midi_note(ev->note());
1183         }
1184
1185         if ( ! ev->selected()) {
1186                 ev->selected(true);
1187         }
1188 }
1189
1190
1191 void
1192 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
1193 {
1194         if ( ! add) {
1195                 clear_selection_except(ev);
1196         }
1197
1198         _selection.erase(ev);
1199
1200         if (ev->selected()) {
1201                 ev->selected(false);
1202         }
1203 }
1204
1205
1206 void
1207 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
1208 {
1209         const double last_y = std::min(y1, y2);
1210         const double y      = std::max(y1, y2);
1211
1212         // TODO: Make this faster by storing the last updated selection rect, and only
1213         // adjusting things that are in the area that appears/disappeared.
1214         // We probably need a tree to be able to find events in O(log(n)) time.
1215
1216 #ifndef NDEBUG
1217         double last_x1 = 0.0;
1218 #endif
1219
1220         if (x1 < x2) {
1221                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1222 #ifndef NDEBUG
1223                         // Events should always be sorted by increasing x1() here
1224                         assert((*i)->x1() >= last_x1);
1225                         last_x1 = (*i)->x1();
1226 #endif
1227                         // Inside rectangle
1228                         if ((*i)->x1() >= x1 && (*i)->x1() <= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
1229                                 if (!(*i)->selected()) {
1230                                         (*i)->selected(true);
1231                                         _selection.insert(*i);
1232                                         play_midi_note((*i)->note());
1233                                 }
1234                         // Not inside rectangle
1235                         } else if ((*i)->selected()) {
1236                                 (*i)->selected(false);
1237                                 _selection.erase(*i);
1238                         }
1239                 }
1240         } else {
1241                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1242 #ifndef NDEBUG
1243                         // Events should always be sorted by increasing x1() here
1244                         assert((*i)->x1() >= last_x1);
1245                         last_x1 = (*i)->x1();
1246 #endif
1247                         // Inside rectangle
1248                         if ((*i)->x2() <= x1 && (*i)->x2() >= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
1249                                 if (!(*i)->selected()) {
1250                                         (*i)->selected(true);
1251                                         _selection.insert(*i);
1252                                         play_midi_note((*i)->note());
1253                                 }
1254                         // Not inside rectangle
1255                         } else if ((*i)->selected()) {
1256                                 (*i)->selected(false);
1257                                 _selection.erase(*i);
1258                         }
1259                 }
1260         }
1261 }
1262
1263
1264 void
1265 MidiRegionView::move_selection(double dx, double dy)
1266 {
1267         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
1268                 (*i)->move_event(dx, dy);
1269 }
1270
1271
1272 void
1273 MidiRegionView::note_dropped(CanvasNoteEvent* ev, double dt, uint8_t dnote)
1274 {
1275         // TODO: This would be faster/nicer with a MoveCommand that doesn't need to copy...
1276         if (_selection.find(ev) != _selection.end()) {
1277                 uint8_t lowest_note_in_selection  = midi_stream_view()->lowest_note();
1278                 uint8_t highest_note_in_selection = midi_stream_view()->highest_note();
1279                 uint8_t highest_note_difference = 0;
1280
1281                 // find highest and lowest notes first
1282                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1283                         uint8_t pitch = (*i)->note()->note();
1284                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
1285                         highest_note_in_selection = std::max(highest_note_in_selection, pitch);
1286                 }
1287
1288                 /*
1289                 cerr << "dnote: " << (int) dnote << endl;
1290                 cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
1291                      << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
1292                 cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
1293                      << int(highest_note_in_selection) << endl;
1294                 cerr << "selection size: " << _selection.size() << endl;
1295                 cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
1296                 */
1297
1298                 // Make sure the note pitch does not exceed the MIDI standard range
1299                 if (dnote <= 127 && (highest_note_in_selection + dnote > 127)) {
1300                         highest_note_difference = highest_note_in_selection - 127;
1301                 }
1302
1303                 start_delta_command(_("move notes"));
1304
1305                 for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ) {
1306                         Selection::iterator next = i;
1307                         ++next;
1308
1309                         const boost::shared_ptr<NoteType> copy(new NoteType(*(*i)->note().get()));
1310
1311                         // we need to snap here again in nframes64_t in order to be sample accurate
1312                         double start_frames = snap_to_frame(beats_to_frames((*i)->note()->time()) + dt);
1313
1314                         // keep notes inside region if dragged beyond left region bound
1315                         if (start_frames < _region->start()) {
1316                                 start_frames = _region->start();
1317                         }
1318
1319                         copy->set_time(frames_to_beats(start_frames));
1320
1321                         uint8_t original_pitch = (*i)->note()->note();
1322                         uint8_t new_pitch = original_pitch + dnote - highest_note_difference;
1323
1324                         // keep notes in standard midi range
1325                         clamp_to_0_127(new_pitch);
1326
1327                         // keep original pitch if note is dragged outside valid midi range
1328                         if ((original_pitch != 0 && new_pitch == 0)
1329                                         || (original_pitch != 127 && new_pitch == 127)) {
1330                                 new_pitch = original_pitch;
1331                         }
1332
1333                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
1334                         highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
1335
1336                         copy->set_note(new_pitch);
1337
1338                         command_remove_note(*i);
1339                         command_add_note(copy, (*i)->selected());
1340
1341                         i = next;
1342                 }
1343
1344                 apply_command();
1345
1346                 // care about notes being moved beyond the upper/lower bounds on the canvas
1347                 if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
1348                                 highest_note_in_selection > midi_stream_view()->highest_note()) {
1349                         midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
1350                 }
1351         }
1352 }
1353
1354 nframes64_t
1355 MidiRegionView::snap_to_frame(double x)
1356 {
1357         PublicEditor &editor = trackview.editor();
1358         // x is region relative, convert it to global absolute frames
1359         nframes64_t frame = editor.pixel_to_frame(x) + _region->position();
1360         editor.snap_to(frame);
1361         return frame - _region->position(); // convert back to region relative
1362 }
1363
1364 nframes64_t
1365 MidiRegionView::snap_to_frame(nframes64_t x)
1366 {
1367         PublicEditor &editor = trackview.editor();
1368         // x is region relative
1369         // convert x to global frame
1370         nframes64_t frame = x + _region->position();
1371         editor.snap_to(frame);
1372         // convert event_frame back to local coordinates relative to position
1373         frame -= _region->position();
1374         return frame;
1375 }
1376
1377 double
1378 MidiRegionView::snap_to_pixel(double x)
1379 {
1380         return (double) trackview.editor().frame_to_pixel(snap_to_frame(x));
1381 }
1382
1383 double
1384 MidiRegionView::get_position_pixels()
1385 {
1386         nframes64_t region_frame = get_position();
1387         return trackview.editor().frame_to_pixel(region_frame);
1388 }
1389
1390 nframes64_t
1391 MidiRegionView::beats_to_frames(double beats) const
1392 {
1393         const Meter& m = trackview.session().tempo_map().meter_at(_region->position());
1394         const Tempo& t = trackview.session().tempo_map().tempo_at(_region->position());
1395         return lrint(beats * m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar());
1396 }
1397
1398 double
1399 MidiRegionView::frames_to_beats(nframes64_t frames) const
1400 {
1401         const Meter& m = trackview.session().tempo_map().meter_at(_region->position());
1402         const Tempo& t = trackview.session().tempo_map().tempo_at(_region->position());
1403         return frames / m.frames_per_bar(t, trackview.session().frame_rate()) * m.beats_per_bar();
1404 }
1405
1406 void
1407 MidiRegionView::begin_resizing(CanvasNote::NoteEnd note_end)
1408 {
1409         _resize_data.clear();
1410
1411         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1412                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
1413
1414                 // only insert CanvasNotes into the map
1415                 if (note) {
1416                         NoteResizeData *resize_data = new NoteResizeData();
1417                         resize_data->canvas_note = note;
1418
1419                         // create a new SimpleRect from the note which will be the resize preview
1420                         SimpleRect *resize_rect = new SimpleRect(
1421                                         *group, note->x1(), note->y1(), note->x2(), note->y2());
1422
1423                         // calculate the colors: get the color settings
1424                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
1425                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
1426                                         128);
1427
1428                         // make the resize preview notes more transparent and bright
1429                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
1430
1431                         // calculate color based on note velocity
1432                         resize_rect->property_fill_color_rgba() = UINT_INTERPOLATE(
1433                                         CanvasNoteEvent::meter_style_fill_color(note->note()->velocity()),
1434                                         fill_color,
1435                                         0.85);
1436
1437                         resize_rect->property_outline_color_rgba() = CanvasNoteEvent::calculate_outline(
1438                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
1439
1440                         resize_data->resize_rect = resize_rect;
1441
1442                         if (note_end == CanvasNote::NOTE_ON) {
1443                                 resize_data->current_x = note->x1();
1444                         } else { // NOTE_OFF
1445                                 resize_data->current_x = note->x2();
1446                         }
1447
1448                         _resize_data.push_back(resize_data);
1449                 }
1450         }
1451 }
1452
1453 void
1454 MidiRegionView::update_resizing(CanvasNote::NoteEnd note_end, double x, bool relative)
1455 {
1456         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1457                 SimpleRect* resize_rect = (*i)->resize_rect;
1458                 CanvasNote* canvas_note = (*i)->canvas_note;
1459
1460                 const double region_start = get_position_pixels();
1461
1462                 if (relative) {
1463                         (*i)->current_x = (*i)->current_x + x;
1464                 } else {
1465                         // x is in track relative, transform it to region relative
1466                         (*i)->current_x = x - region_start;
1467                 }
1468
1469                 double current_x = (*i)->current_x;
1470
1471                 if (note_end == CanvasNote::NOTE_ON) {
1472                         resize_rect->property_x1() = snap_to_pixel(current_x);
1473                         resize_rect->property_x2() = canvas_note->x2();
1474                 } else {
1475                         resize_rect->property_x2() = snap_to_pixel(current_x);
1476                         resize_rect->property_x1() = canvas_note->x1();
1477                 }
1478         }
1479 }
1480
1481 void
1482 MidiRegionView::commit_resizing(CanvasNote::NoteEnd note_end, double event_x, bool relative)
1483 {
1484         start_delta_command(_("resize notes"));
1485
1486         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1487                 CanvasNote*  canvas_note = (*i)->canvas_note;
1488                 SimpleRect*  resize_rect = (*i)->resize_rect;
1489                 double       current_x   = (*i)->current_x;
1490                 const double position    = get_position_pixels();
1491
1492                 if (!relative) {
1493                         // event_x is in track relative, transform it to region relative
1494                         current_x = event_x - position;
1495                 }
1496
1497                 // because snapping works on world coordinates we have to transform current_x
1498                 // to world coordinates before snapping and transform it back afterwards
1499                 nframes64_t current_frame = snap_to_frame(current_x);
1500                 // transform to region start relative
1501                 current_frame += _region->start();
1502
1503                 const boost::shared_ptr<NoteType> copy(new NoteType(*(canvas_note->note().get())));
1504
1505                 // resize beginning of note
1506                 if (note_end == CanvasNote::NOTE_ON && current_frame < copy->end_time()) {
1507                         command_remove_note(canvas_note);
1508                         copy->on_event().time() = current_frame;
1509                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1510                 }
1511                 // resize end of note
1512                 if (note_end == CanvasNote::NOTE_OFF && current_frame > copy->time()) {
1513                         command_remove_note(canvas_note);
1514                         copy->off_event().time() = current_frame;
1515                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1516                 }
1517
1518                 delete resize_rect;
1519                 delete (*i);
1520         }
1521
1522         _resize_data.clear();
1523         apply_command();
1524 }
1525
1526 void
1527 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
1528 {
1529         const boost::shared_ptr<NoteType> copy(new NoteType(*(event->note().get())));
1530
1531         if (relative) {
1532                 uint8_t new_velocity = copy->velocity() + velocity;
1533                 clamp_to_0_127(new_velocity);
1534                 copy->set_velocity(new_velocity);
1535         } else {
1536                 copy->set_velocity(velocity);
1537         }
1538
1539         command_remove_note(event);
1540         command_add_note(copy, event->selected());
1541 }
1542
1543 void
1544 MidiRegionView::change_velocity(CanvasNoteEvent* ev, int8_t velocity, bool relative)
1545 {
1546         start_delta_command(_("change velocity"));
1547
1548         change_note_velocity(ev, velocity, relative);
1549
1550         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1551                 Selection::iterator next = i;
1552                 ++next;
1553                 if ( !(*((*i)->note()) == *(ev->note())) ) {
1554                         change_note_velocity(*i, velocity, relative);
1555                 }
1556                 i = next;
1557         }
1558
1559         apply_command();
1560 }
1561
1562 void
1563 MidiRegionView::change_channel(uint8_t channel)
1564 {
1565         start_delta_command(_("change channel"));
1566         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1567                 Selection::iterator next = i;
1568                 ++next;
1569
1570                 CanvasNoteEvent* event = *i;
1571                 const boost::shared_ptr<NoteType> copy(new NoteType(*(event->note().get())));
1572
1573                 copy->set_channel(channel);
1574
1575                 command_remove_note(event);
1576                 command_add_note(copy, event->selected());
1577
1578                 i = next;
1579         }
1580
1581         apply_command();
1582 }
1583
1584
1585 void
1586 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
1587 {
1588         if (ev->note() && _mouse_state == EraseTouchDragging) {
1589                 start_delta_command(_("note entered"));
1590                 ev->selected(true);
1591                 _delta_command->remove(ev->note());
1592         } else if (_mouse_state == SelectTouchDragging) {
1593                 note_selected(ev, true);
1594         }
1595 }
1596
1597
1598 void
1599 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
1600 {
1601         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
1602         if (msrc)
1603                 display_model(msrc->model());
1604 }
1605
1606 void
1607 MidiRegionView::set_frame_color()
1608 {
1609         if (frame) {
1610                 if (_selected && should_show_selection) {
1611                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
1612                 } else {
1613                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
1614                 }
1615         }
1616 }
1617
1618 void
1619 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
1620 {
1621         switch (mode) {
1622         case AllChannels:
1623         case FilterChannels:
1624                 _force_channel = -1;
1625                 break;
1626         case ForceChannel:
1627                 _force_channel = mask;
1628                 mask = 0xFFFF; // Show all notes as active (below)
1629         };
1630
1631         // Update notes for selection
1632         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1633                 (*i)->on_channel_selection_change(mask);
1634         }
1635
1636         _last_channel_selection = mask;
1637 }
1638
1639 void
1640 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
1641 {
1642         _model_name         = model;
1643         _custom_device_mode = custom_device_mode;
1644         redisplay_model();
1645 }
1646