gtk2_ardour/midi_region_view.cc

   1 /*
   2     Copyright (C) 2001-2007 Paul Davis
   3     Author: Dave Robillard
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include <cmath>
  21 #include <cassert>
  22 #include <algorithm>
  23
  24 #include <gtkmm.h>
  25
  26 #include <gtkmm2ext/gtk_ui.h>
  27
  28 #include <sigc++/signal.h>
  29
  30 #include <ardour/playlist.h>
  31 #include <ardour/tempo.h>
  32 #include <ardour/midi_region.h>
  33 #include <ardour/midi_source.h>
  34 #include <ardour/midi_diskstream.h>
  35 #include <ardour/midi_model.h>
  36 #include <ardour/midi_patch_manager.h>
  37
  38 #include <evoral/Parameter.hpp>
  39 #include <evoral/Control.hpp>
  40
  41 #include "streamview.h"
  42 #include "midi_region_view.h"
  43 #include "midi_streamview.h"
  44 #include "midi_time_axis.h"
  45 #include "simpleline.h"
  46 #include "canvas-hit.h"
  47 #include "canvas-note.h"
  48 #include "canvas-program-change.h"
  49 #include "public_editor.h"
  50 #include "ghostregion.h"
  51 #include "midi_time_axis.h"
  52 #include "automation_time_axis.h"
  53 #include "automation_region_view.h"
  54 #include "utils.h"
  55 #include "midi_util.h"
  56 #include "gui_thread.h"
  57 #include "keyboard.h"
  58
  59 #include "i18n.h"
  60
  61 using namespace sigc;
  62 using namespace ARDOUR;
  63 using namespace PBD;
  64 using namespace Editing;
  65 using namespace ArdourCanvas;
  66
  67 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
  68                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color)
  69         : RegionView (parent, tv, r, spu, basic_color)
  70         , _force_channel(-1)
  71         , _last_channel_selection(0xFFFF)
  72         , _default_note_length(1.0)
  73         , _current_range_min(0)
  74         , _current_range_max(0)
  75         , _model_name(string())
  76         , _custom_device_mode(string())
  77         , _active_notes(0)
  78         , _note_group(new ArdourCanvas::Group(*parent))
  79         , _delta_command(NULL)
  80         , _mouse_state(None)
  81         , _pressed_button(0)
  82 {
  83         _note_group->raise_to_top();
  84 }
  85
  86 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
  87                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color,
  88                 TimeAxisViewItem::Visibility visibility)
  89         : RegionView (parent, tv, r, spu, basic_color, false, visibility)
  90         , _force_channel(-1)
  91         , _last_channel_selection(0xFFFF)
  92         , _default_note_length(1.0)
  93         , _model_name(string())
  94         , _custom_device_mode(string())
  95         , _active_notes(0)
  96         , _note_group(new ArdourCanvas::Group(*parent))
  97         , _delta_command(NULL)
  98         , _mouse_state(None)
  99         , _pressed_button(0)
 100
 101 {
 102         _note_group->raise_to_top();
 103 }
 104
 105
 106 MidiRegionView::MidiRegionView (const MidiRegionView& other)
 107         : RegionView (other)
 108         , _force_channel(-1)
 109         , _last_channel_selection(0xFFFF)
 110         , _default_note_length(1.0)
 111         , _model_name(string())
 112         , _custom_device_mode(string())
 113         , _active_notes(0)
 114         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 115         , _delta_command(NULL)
 116         , _mouse_state(None)
 117         , _pressed_button(0)
 118 {
 119         Gdk::Color c;
 120         int r,g,b,a;
 121
 122         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 123         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 124
 125         init (c, false);
 126 }
 127
 128 MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<MidiRegion> region)
 129         : RegionView (other, boost::shared_ptr<Region> (region))
 130         , _force_channel(-1)
 131         , _last_channel_selection(0xFFFF)
 132         , _default_note_length(1.0)
 133         , _model_name(string())
 134         , _custom_device_mode(string())
 135         , _active_notes(0)
 136         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 137         , _delta_command(NULL)
 138         , _mouse_state(None)
 139         , _pressed_button(0)
 140 {
 141         Gdk::Color c;
 142         int r,g,b,a;
 143
 144         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 145         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 146
 147         init (c, true);
 148 }
 149
 150 void
 151 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
 152 {
 153         if (wfd) {
 154                 midi_region()->midi_source(0)->load_model();
 155         }
 156
 157         _model = midi_region()->midi_source(0)->model();
 158         _enable_display = false;
 159
 160         RegionView::init (basic_color, false);
 161
 162         compute_colors (basic_color);
 163
 164         set_height (trackview.current_height());
 165
 166         region_muted ();
 167         region_sync_changed ();
 168         region_resized (BoundsChanged);
 169         region_locked ();
 170
 171         reset_width_dependent_items (_pixel_width);
 172         //reset_width_dependent_items ((double) _region->length() / samples_per_unit);
 173
 174         set_colors ();
 175
 176         _enable_display = true;
 177         if (_model) {
 178                 if (wfd) {
 179                         redisplay_model();
 180                 }
 181                 _model->ContentsChanged.connect(sigc::mem_fun(this, &MidiRegionView::redisplay_model));
 182         }
 183
 184         group->raise_to_top();
 185         group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event), false);
 186
 187         midi_view()->signal_channel_mode_changed().connect(
 188                         mem_fun(this, &MidiRegionView::midi_channel_mode_changed));
 189
 190         midi_view()->signal_midi_patch_settings_changed().connect(
 191                         mem_fun(this, &MidiRegionView::midi_patch_settings_changed));
 192 }
 193
 194 bool
 195 MidiRegionView::canvas_event(GdkEvent* ev)
 196 {
 197         static bool delete_mod = false;
 198         static Editing::MidiEditMode original_mode;
 199
 200         static double drag_start_x, drag_start_y;
 201         static double last_x, last_y;
 202         double event_x, event_y;
 203         nframes64_t event_frame = 0;
 204
 205         static ArdourCanvas::SimpleRect* drag_rect = NULL;
 206
 207         if (trackview.editor().current_mouse_mode() != MouseNote)
 208                 return false;
 209
 210         const Editing::MidiEditMode midi_edit_mode = trackview.editor().current_midi_edit_mode();
 211
 212         switch (ev->type) {
 213         case GDK_KEY_PRESS:
 214                 if (ev->key.keyval == GDK_Delete && !delete_mod) {
 215                         delete_mod = true;
 216                         original_mode = midi_edit_mode;
 217                         trackview.editor().set_midi_edit_mode(MidiEditErase);
 218                         start_delta_command(_("erase notes"));
 219                         _mouse_state = EraseTouchDragging;
 220                         return true;
 221                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 222                         _mouse_state = SelectTouchDragging;
 223                         return true;
 224                 } else if (ev->key.keyval == GDK_Escape) {
 225                         clear_selection();
 226                         _mouse_state = None;
 227                 }
 228                 return false;
 229
 230         case GDK_KEY_RELEASE:
 231                 if (ev->key.keyval == GDK_Delete) {
 232                         if (_mouse_state == EraseTouchDragging) {
 233                                 delete_selection();
 234                                 apply_command();
 235                         }
 236                         if (delete_mod) {
 237                                 trackview.editor().set_midi_edit_mode(original_mode);
 238                                 _mouse_state = None;
 239                                 delete_mod = false;
 240                         }
 241                         return true;
 242                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 243                         _mouse_state = None;
 244                         return true;
 245                 }
 246                 return false;
 247
 248         case GDK_BUTTON_PRESS:
 249                 if (_mouse_state != SelectTouchDragging &&
 250                         _mouse_state != EraseTouchDragging &&
 251                         ev->button.button == 1) {
 252                         _pressed_button = ev->button.button;
 253                         _mouse_state = Pressed;
 254                         return true;
 255                 }
 256                 _pressed_button = ev->button.button;
 257                 return true;
 258
 259         case GDK_2BUTTON_PRESS:
 260                 return true;
 261
 262         case GDK_ENTER_NOTIFY:
 263                 /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 264                 Keyboard::magic_widget_grab_focus();
 265                 group->grab_focus();
 266                 break;
 267
 268         case GDK_MOTION_NOTIFY:
 269                 event_x = ev->motion.x;
 270                 event_y = ev->motion.y;
 271                 group->w2i(event_x, event_y);
 272
 273                 // convert event_x to global frame
 274                 event_frame = trackview.editor().pixel_to_frame(event_x) + _region->position();
 275                 trackview.editor().snap_to(event_frame);
 276                 // convert event_frame back to local coordinates relative to position
 277                 event_frame -= _region->position();
 278
 279                 switch (_mouse_state) {
 280                 case Pressed: // Drag start
 281
 282                         // Select drag start
 283                         if (_pressed_button == 1 && midi_edit_mode == MidiEditSelect) {
 284                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 285                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 286                                 last_x = event_x;
 287                                 last_y = event_y;
 288                                 drag_start_x = event_x;
 289                                 drag_start_y = event_y;
 290
 291                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 292                                 drag_rect->property_x1() = event_x;
 293                                 drag_rect->property_y1() = event_y;
 294                                 drag_rect->property_x2() = event_x;
 295                                 drag_rect->property_y2() = event_y;
 296                                 drag_rect->property_outline_what() = 0xFF;
 297                                 drag_rect->property_outline_color_rgba()
 298                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 299                                 drag_rect->property_fill_color_rgba()
 300                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 301
 302                                 _mouse_state = SelectRectDragging;
 303                                 return true;
 304
 305                         // Add note drag start
 306                         } else if (midi_edit_mode == MidiEditPencil) {
 307                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 308                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 309                                 last_x = event_x;
 310                                 last_y = event_y;
 311                                 drag_start_x = event_x;
 312                                 drag_start_y = event_y;
 313
 314                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 315                                 drag_rect->property_x1() = trackview.editor().frame_to_pixel(event_frame);
 316
 317                                 drag_rect->property_y1() = midi_stream_view()->note_to_y(
 318                                                 midi_stream_view()->y_to_note(event_y));
 319                                 drag_rect->property_x2() = event_x;
 320                                 drag_rect->property_y2() = drag_rect->property_y1()
 321                                                          + floor(midi_stream_view()->note_height());
 322                                 drag_rect->property_outline_what() = 0xFF;
 323                                 drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 324                                 drag_rect->property_fill_color_rgba()    = 0xFFFFFF66;
 325
 326                                 _mouse_state = AddDragging;
 327                                 return true;
 328                         }
 329
 330                         return false;
 331
 332                 case SelectRectDragging: // Select drag motion
 333                 case AddDragging: // Add note drag motion
 334                         if (ev->motion.is_hint) {
 335                                 int t_x;
 336                                 int t_y;
 337                                 GdkModifierType state;
 338                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 339                                 event_x = t_x;
 340                                 event_y = t_y;
 341                         }
 342
 343                         if (_mouse_state == AddDragging)
 344                                 event_x = trackview.editor().frame_to_pixel(event_frame);
 345
 346                         if (drag_rect) {
 347                                 if (event_x > drag_start_x)
 348                                         drag_rect->property_x2() = event_x;
 349                                 else
 350                                         drag_rect->property_x1() = event_x;
 351                         }
 352
 353                         if (drag_rect && _mouse_state == SelectRectDragging) {
 354                                 if (event_y > drag_start_y)
 355                                         drag_rect->property_y2() = event_y;
 356                                 else
 357                                         drag_rect->property_y1() = event_y;
 358
 359                                 update_drag_selection(drag_start_x, event_x, drag_start_y, event_y);
 360                         }
 361
 362                         last_x = event_x;
 363                         last_y = event_y;
 364
 365                 case EraseTouchDragging:
 366                 case SelectTouchDragging:
 367                         return false;
 368
 369                 default:
 370                         break;
 371                 }
 372                 break;
 373
 374         case GDK_BUTTON_RELEASE:
 375                 event_x = ev->motion.x;
 376                 event_y = ev->motion.y;
 377                 group->w2i(event_x, event_y);
 378                 group->ungrab(ev->button.time);
 379                 event_frame = trackview.editor().pixel_to_frame(event_x);
 380
 381                 if (_pressed_button != 1) {
 382                         return false;
 383                 }
 384
 385                 switch (_mouse_state) {
 386                 case Pressed: // Clicked
 387                         switch (midi_edit_mode) {
 388                         case MidiEditSelect:
 389                         case MidiEditResize:
 390                                 clear_selection();
 391                                 break;
 392                         case MidiEditPencil:
 393                                 create_note_at(event_x, event_y, _default_note_length);
 394                         default: break;
 395                         }
 396                         _mouse_state = None;
 397                         break;
 398                 case SelectRectDragging: // Select drag done
 399                         _mouse_state = None;
 400                         delete drag_rect;
 401                         drag_rect = NULL;
 402                         break;
 403                 case AddDragging: // Add drag done
 404                         _mouse_state = None;
 405                         if (drag_rect->property_x2() > drag_rect->property_x1() + 2) {
 406                                 const double x      = drag_rect->property_x1();
 407                                 const double length = trackview.editor().pixel_to_frame(
 408                                                         drag_rect->property_x2() - drag_rect->property_x1());
 409
 410                                 create_note_at(x, drag_rect->property_y1(), frames_to_beats(length));
 411                         }
 412
 413                         delete drag_rect;
 414                         drag_rect = NULL;
 415                 default: break;
 416                 }
 417
 418         default: break;
 419         }
 420
 421         return false;
 422 }
 423
 424
 425 /** Add a note to the model, and the view, at a canvas (click) coordinate.
 426  * \param x horizontal position in pixels
 427  * \param y vertical position in pixels
 428  * \param length duration of the note in beats */
 429 void
 430 MidiRegionView::create_note_at(double x, double y, double length)
 431 {
 432         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 433         MidiStreamView* const view = mtv->midi_view();
 434
 435         double note = midi_stream_view()->y_to_note(y);
 436
 437         assert(note >= 0.0);
 438         assert(note <= 127.0);
 439
 440         // Start of note in frames relative to region start
 441         nframes64_t start_frames = snap_to_frame(trackview.editor().pixel_to_frame(x));
 442         assert(start_frames >= 0);
 443
 444         // Snap length
 445         length = frames_to_beats(
 446                         snap_to_frame(start_frames + beats_to_frames(length)) - start_frames);
 447
 448         const boost::shared_ptr<NoteType> new_note(new NoteType(0,
 449                         frames_to_beats(start_frames + _region->start()), length,
 450                         (uint8_t)note, 0x40));
 451
 452         view->update_note_range(new_note->note());
 453
 454         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 455         cmd->add(new_note);
 456         _model->apply_command(trackview.session(), cmd);
 457 }
 458
 459
 460 void
 461 MidiRegionView::clear_events()
 462 {
 463         clear_selection();
 464
 465         MidiGhostRegion* gr;
 466         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 467                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 468                         gr->clear_events();
 469                 }
 470         }
 471
 472         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 473                 delete *i;
 474         }
 475
 476         _events.clear();
 477         _pgm_changes.clear();
 478 }
 479
 480
 481 void
 482 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 483 {
 484         _model = model;
 485         if (_enable_display) {
 486                 redisplay_model();
 487         }
 488 }
 489
 490
 491 void
 492 MidiRegionView::start_delta_command(string name)
 493 {
 494         if (!_delta_command) {
 495                 _delta_command = _model->new_delta_command(name);
 496         }
 497 }
 498
 499 void
 500 MidiRegionView::command_add_note(const boost::shared_ptr<NoteType> note, bool selected)
 501 {
 502         if (_delta_command) {
 503                 _delta_command->add(note);
 504         }
 505         if (selected) {
 506                 _marked_for_selection.insert(note);
 507         }
 508 }
 509
 510 void
 511 MidiRegionView::command_remove_note(ArdourCanvas::CanvasNoteEvent* ev)
 512 {
 513         if (_delta_command && ev->note()) {
 514                 _delta_command->remove(ev->note());
 515         }
 516 }
 517
 518 void
 519 MidiRegionView::apply_command()
 520 {
 521         if (!_delta_command) {
 522                 return;
 523         }
 524
 525         // Mark all selected notes for selection when model reloads
 526         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 527                 _marked_for_selection.insert((*i)->note());
 528         }
 529
 530         _model->apply_command(trackview.session(), _delta_command);
 531         _delta_command = NULL;
 532         midi_view()->midi_track()->diskstream()->playlist_modified();
 533
 534         _marked_for_selection.clear();
 535 }
 536
 537
 538 void
 539 MidiRegionView::abort_command()
 540 {
 541         delete _delta_command;
 542         _delta_command = NULL;
 543         clear_selection();
 544 }
 545
 546
 547 void
 548 MidiRegionView::redisplay_model()
 549 {
 550         // Don't redisplay the model if we're currently recording and displaying that
 551         if (_active_notes) {
 552                 return;
 553         }
 554
 555         if (_model) {
 556                 clear_events();
 557                 _model->read_lock();
 558
 559                 MidiModel::Notes notes = _model->notes();
 560                 /*
 561                 cerr << _model->midi_source()->name() << " : redisplaying " << notes.size() << endl;
 562                 for (MidiModel::Notes::iterator i = notes.begin(); i != notes.end(); ++i) {
 563                         cerr << "NOTE  time: " << (*i)->time()
 564                                  << "  pitch: " << int((*i)->note())
 565                              << "  length: " << (*i)->length()
 566                              << "  end-time: " << (*i)->end_time()
 567                              << "  velocity: " << int((*i)->velocity())
 568                              << endl;
 569                 }
 570                 */
 571
 572                 for (size_t i = 0; i < _model->n_notes(); ++i) {
 573                         add_note(_model->note_at(i));
 574                 }
 575
 576                 display_program_change_flags();
 577
 578                 _model->read_unlock();
 579
 580         } else {
 581                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
 582         }
 583 }
 584
 585 void
 586 MidiRegionView::display_program_change_flags()
 587 {
 588         for (Automatable::Controls::iterator control = _model->controls().begin();
 589                         control != _model->controls().end(); ++control) {
 590                 if (control->first.type() == MidiPgmChangeAutomation) {
 591                         Glib::Mutex::Lock list_lock (control->second->list()->lock());
 592
 593                         uint8_t channel = control->first.channel();
 594
 595                         for (AutomationList::const_iterator event = control->second->list()->begin();
 596                                         event != control->second->list()->end(); ++event) {
 597                                 double event_time     = (*event)->when;
 598                                 double program_number = floor((*event)->value + 0.5);
 599
 600                                 //cerr << " got program change on channel " << int(channel)
 601                                 //              << " time: " << event_time << " number: " << program_number << endl;
 602
 603                                 // find bank select msb and lsb for the program change
 604                                 Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
 605                                 boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
 606                                 uint8_t msb = 0;
 607                                 if (msb_control != 0) {
 608                                         msb = uint8_t(floor(msb_control->get_float(true, event_time) + 0.5));
 609                                 }
 610
 611                                 Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
 612                                 boost::shared_ptr<Evoral::Control>  lsb_control = _model->control(bank_select_lsb);
 613                                 uint8_t lsb = 0;
 614                                 if (lsb_control != 0) {
 615                                         lsb = uint8_t(floor(lsb_control->get_float(true, event_time) + 0.5));
 616                                 }
 617
 618                                 //cerr << " got msb " << int(msb) << " and lsb " << int(lsb)
 619                                 //              << " thread_id: " << pthread_self() << endl;
 620
 621                                 MIDI::Name::PatchPrimaryKey patch_key(msb, lsb, program_number);
 622
 623                                 boost::shared_ptr<MIDI::Name::Patch> patch =
 624                                         MIDI::Name::MidiPatchManager::instance().find_patch(
 625                                                         _model_name,
 626                                                         _custom_device_mode,
 627                                                         channel,
 628                                                         patch_key);
 629
 630                                 ControlEvent program_change(beats_to_frames(event_time),
 631                                                 uint8_t(program_number), channel);
 632
 633                                 if (patch != 0) {
 634                                         //cerr << " got patch with name " << patch->name()
 635                                         //              << " number " << patch->number() << endl;
 636                                         add_pgm_change(program_change, patch->name());
 637                                 } else {
 638                                         char buf[4];
 639                                         snprintf(buf, 4, "%d", int(program_number));
 640                                         add_pgm_change(program_change, buf);
 641                                 }
 642                         }
 643                         break;
 644                 } else if (control->first.type() == MidiCCAutomation) {
 645                         //cerr << " found CC Automation of channel " << int(control->first.channel())
 646                         //              << " and id " << control->first.id() << endl;
 647                 }
 648         }
 649 }
 650
 651
 652 MidiRegionView::~MidiRegionView ()
 653 {
 654         in_destructor = true;
 655
 656         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 657
 658         if (_active_notes) {
 659                 end_write();
 660         }
 661
 662         _selection.clear();
 663         clear_events();
 664         delete _note_group;
 665         delete _delta_command;
 666 }
 667
 668
 669 void
 670 MidiRegionView::region_resized (Change what_changed)
 671 {
 672         RegionView::region_resized(what_changed);
 673
 674         if (what_changed & ARDOUR::PositionChanged) {
 675                 if (_enable_display) {
 676                         redisplay_model();
 677                 }
 678         }
 679 }
 680
 681 void
 682 MidiRegionView::reset_width_dependent_items (double pixel_width)
 683 {
 684         RegionView::reset_width_dependent_items(pixel_width);
 685         assert(_pixel_width == pixel_width);
 686
 687         if (_enable_display) {
 688                 redisplay_model();
 689         }
 690 }
 691
 692 void
 693 MidiRegionView::set_height (double height)
 694 {
 695         static const double FUDGE = 2.0;
 696         const double old_height = _height;
 697         RegionView::set_height(height);
 698         _height = height - FUDGE;
 699
 700         apply_note_range(midi_stream_view()->lowest_note(),
 701                          midi_stream_view()->highest_note(),
 702                          height != old_height + FUDGE);
 703
 704         if (name_text) {
 705                 name_text->raise_to_top();
 706         }
 707 }
 708
 709
 710 /** Apply the current note range from the stream view
 711  * by repositioning/hiding notes as necessary
 712  */
 713 void
 714 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
 715 {
 716         if (_enable_display) {
 717                 if (!force && _current_range_min == min && _current_range_max == max) {
 718                         return;
 719                 }
 720
 721                 _current_range_min = min;
 722                 _current_range_max = max;
 723
 724                 for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
 725                         CanvasNoteEvent* event = *i;
 726                         Item* item = dynamic_cast<Item*>(event);
 727                         assert(item);
 728                         if (event && event->note()) {
 729                                 if (event->note()->note() < _current_range_min
 730                                                 || event->note()->note() > _current_range_max) {
 731                                         if (canvas_item_visible(item)) {
 732                                                 item->hide();
 733                                         }
 734                                 } else {
 735                                         if (!canvas_item_visible(item)) {
 736                                                 item->show();
 737                                         }
 738
 739                                         event->hide_velocity();
 740                                         if (CanvasNote* note = dynamic_cast<CanvasNote*>(event)) {
 741                                                 const double y1 = midi_stream_view()->note_to_y(event->note()->note());
 742                                                 const double y2 = y1 + floor(midi_stream_view()->note_height());
 743
 744                                                 note->property_y1() = y1;
 745                                                 note->property_y2() = y2;
 746                                         } else if (CanvasHit* hit = dynamic_cast<CanvasHit*>(event)) {
 747                                                 double x = trackview.editor().frame_to_pixel(
 748                                                                 beats_to_frames(event->note()->time()) - _region->start());
 749                                                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 750                                                 double y = midi_stream_view()->note_to_y(event->note()->note())
 751                                                                  + ((diamond_size-2.0) / 4.0);
 752
 753                                                 hit->set_height(diamond_size);
 754                                                 hit->move(x-hit->x1(), y-hit->y1());
 755                                                 hit->show();
 756                                         }
 757                                         if (event->selected()) {
 758                                                 event->show_velocity();
 759                                         }
 760                                 }
 761                         }
 762                 }
 763         }
 764 }
 765
 766 GhostRegion*
 767 MidiRegionView::add_ghost (TimeAxisView& tv)
 768 {
 769         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 770         CanvasNote* note;
 771         assert(rtv);
 772
 773         double unit_position = _region->position () / samples_per_unit;
 774         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
 775         MidiGhostRegion* ghost;
 776
 777         if (mtv && mtv->midi_view()) {
 778                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group.
 779                    this is because it's nice to have midi notes on top of the note lines and
 780                    audio waveforms under it.
 781                  */
 782                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
 783         } else {
 784                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
 785         }
 786
 787         ghost->set_height ();
 788         ghost->set_duration (_region->length() / samples_per_unit);
 789         ghosts.push_back (ghost);
 790
 791         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 792                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
 793                         ghost->add_note(note);
 794                 }
 795         }
 796
 797         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 798
 799         return ghost;
 800 }
 801
 802
 803 /** Begin tracking note state for successive calls to add_event
 804  */
 805 void
 806 MidiRegionView::begin_write()
 807 {
 808         assert(!_active_notes);
 809         _active_notes = new CanvasNote*[128];
 810         for (unsigned i=0; i < 128; ++i) {
 811                 _active_notes[i] = NULL;
 812         }
 813 }
 814
 815
 816 /** Destroy note state for add_event
 817  */
 818 void
 819 MidiRegionView::end_write()
 820 {
 821         delete[] _active_notes;
 822         _active_notes = NULL;
 823         _marked_for_selection.clear();
 824 }
 825
 826
 827 /** Resolve an active MIDI note (while recording).
 828  */
 829 void
 830 MidiRegionView::resolve_note(uint8_t note, double end_time)
 831 {
 832         if (midi_view()->note_mode() != Sustained) {
 833                 return;
 834         }
 835
 836         if (_active_notes && _active_notes[note]) {
 837                 _active_notes[note]->property_x2() = trackview.editor().frame_to_pixel((nframes64_t)end_time);
 838                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 839                 _active_notes[note] = NULL;
 840         }
 841 }
 842
 843
 844 /** Extend active notes to rightmost edge of region (if length is changed)
 845  */
 846 void
 847 MidiRegionView::extend_active_notes()
 848 {
 849         if (!_active_notes) {
 850                 return;
 851         }
 852
 853         for (unsigned i=0; i < 128; ++i) {
 854                 if (_active_notes[i]) {
 855                         _active_notes[i]->property_x2() = trackview.editor().frame_to_pixel(_region->length());
 856                 }
 857         }
 858 }
 859
 860 void
 861 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
 862 {
 863         if (!trackview.editor().sound_notes()) {
 864                 return;
 865         }
 866
 867         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
 868         assert(route_ui);
 869
 870         route_ui->midi_track()->write_immediate_event(
 871                         note->on_event().size(), note->on_event().buffer());
 872
 873         const double note_length_beats = (note->off_event().time() - note->on_event().time());
 874         nframes_t note_length_ms = beats_to_frames(note_length_beats)
 875                         * (1000 / (double)route_ui->session().nominal_frame_rate());
 876         Glib::signal_timeout().connect(bind(mem_fun(this, &MidiRegionView::play_midi_note_off), note),
 877                         note_length_ms, G_PRIORITY_DEFAULT);
 878 }
 879
 880 bool
 881 MidiRegionView::play_midi_note_off(boost::shared_ptr<NoteType> note)
 882 {
 883         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
 884         assert(route_ui);
 885
 886         route_ui->midi_track()->write_immediate_event(
 887                         note->off_event().size(), note->off_event().buffer());
 888
 889         return false;
 890 }
 891
 892 bool
 893 MidiRegionView::note_in_visible_range(const boost::shared_ptr<NoteType> note) const
 894 {
 895         const nframes64_t note_start_frames = beats_to_frames(note->time());
 896         bool outside = (note_start_frames - _region->start() >= _region->length())
 897                         || (note_start_frames < _region->start())
 898                         || (note->note() < midi_stream_view()->lowest_note())
 899                         || (note->note() > midi_stream_view()->highest_note());
 900         return !outside;
 901 }
 902
 903 /** Add a MIDI note to the view (with length).
 904  *
 905  * If in sustained mode, notes with length 0 will be considered active
 906  * notes, and resolve_note should be called when the corresponding note off
 907  * event arrives, to properly display the note.
 908  */
 909 void
 910 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note)
 911 {
 912         assert(note->time() >= 0);
 913         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
 914
 915         const nframes64_t note_start_frames = beats_to_frames(note->time());
 916         const nframes64_t note_end_frames   = beats_to_frames(note->end_time());
 917
 918         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 919
 920         CanvasNoteEvent* event = 0;
 921
 922         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
 923
 924         if (midi_view()->note_mode() == Sustained) {
 925                 const double y1 = midi_stream_view()->note_to_y(note->note());
 926                 const double note_endpixel =
 927                         trackview.editor().frame_to_pixel(note_end_frames - _region->start());
 928
 929                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
 930                 ev_rect->property_x1() = x;
 931                 ev_rect->property_y1() = y1;
 932                 if (note->length() > 0) {
 933                         ev_rect->property_x2() = note_endpixel;
 934                 } else {
 935                         ev_rect->property_x2() = trackview.editor().frame_to_pixel(_region->length());
 936                 }
 937                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 938
 939                 if (note->length() == 0) {
 940                         if (_active_notes) {
 941                                 assert(note->note() < 128);
 942                                 // If this note is already active there's a stuck note,
 943                                 // finish the old note rectangle
 944                                 if (_active_notes[note->note()]) {
 945                                         CanvasNote* const old_rect = _active_notes[note->note()];
 946                                         boost::shared_ptr<NoteType> old_note = old_rect->note();
 947                                         cerr << "MidiModel: WARNING: Note has length 0: chan " << old_note->channel()
 948                                                 << "note " << (int)old_note->note() << " @ " << old_note->time() << endl;
 949                                         /* FIXME: How large to make it?  Make it a diamond? */
 950                                         old_rect->property_x2() = old_rect->property_x1() + 2.0;
 951                                         old_rect->property_outline_what() = (guint32) 0xF;
 952                                 }
 953                                 _active_notes[note->note()] = ev_rect;
 954                         }
 955                         /* outline all but right edge */
 956                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 957                 } else {
 958                         /* outline all edges */
 959                         ev_rect->property_outline_what() = (guint32) 0xF;
 960                 }
 961
 962                 event = ev_rect;
 963
 964                 MidiGhostRegion* gr;
 965                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 966                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 967                                 gr->add_note(ev_rect);
 968                         }
 969                 }
 970
 971         } else if (midi_view()->note_mode() == Percussive) {
 972                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 973                 const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
 974
 975                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
 976                 ev_diamond->move(x, y);
 977                 event = ev_diamond;
 978         } else {
 979                 event = 0;
 980         }
 981
 982         if (event) {
 983                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
 984                         note_selected(event, true);
 985                 }
 986                 event->on_channel_selection_change(_last_channel_selection);
 987                 _events.push_back(event);
 988                 if (note_in_visible_range(note)) {
 989                         event->show();
 990                 } else {
 991                         event->hide();
 992                 }
 993         }
 994 }
 995
 996 void
 997 MidiRegionView::add_pgm_change(ControlEvent& program, string displaytext)
 998 {
 999         assert(program.time >= 0);
1000
1001         // dont display program changes beyond the region bounds
1002         if (program.time - _region->start() >= _region->length() || program.time <  _region->start())
1003                 return;
1004
1005         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1006         const double x = trackview.editor().frame_to_pixel((nframes64_t)program.time - _region->start());
1007
1008         double height = midi_stream_view()->contents_height();
1009
1010         boost::shared_ptr<CanvasProgramChange> pgm_change = boost::shared_ptr<CanvasProgramChange>(
1011                         new CanvasProgramChange(
1012                                         *this,
1013                                         *group,
1014                                         displaytext,
1015                                         height,
1016                                         x,
1017                                         1.0,
1018                                         _model_name,
1019                                         _custom_device_mode,
1020                                         program.time,
1021                                         program.channel,
1022                                         program.value));
1023
1024         _pgm_changes.push_back(pgm_change);
1025 }
1026
1027 void
1028 MidiRegionView::get_patch_key_at(double time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1029 {
1030         cerr << "getting patch key at " << time << " for channel " << channel << endl;
1031         Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1032         boost::shared_ptr<Evoral::Control>  msb_control = _model->control(bank_select_msb);
1033         float msb = -1.0;
1034         if (msb_control != 0) {
1035                 msb = int(msb_control->get_float(true, time));
1036                 cerr << "got msb " << msb;
1037         }
1038
1039         Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1040         boost::shared_ptr<Evoral::Control>  lsb_control = _model->control(bank_select_lsb);
1041         float lsb = -1.0;
1042         if (lsb_control != 0) {
1043                 lsb = lsb_control->get_float(true, time);
1044                 cerr << " got lsb " << lsb;
1045         }
1046
1047         Evoral::Parameter program_change(MidiPgmChangeAutomation, channel, 0);
1048         boost::shared_ptr<Evoral::Control>  program_control = _model->control(program_change);
1049         float program_number = -1.0;
1050         if (program_control != 0) {
1051                 program_number = program_control->get_float(true, time);
1052                 cerr << " got program " << program_number << endl;
1053         }
1054
1055         key.msb = (int) floor(msb + 0.5);
1056         key.lsb = (int) floor(lsb + 0.5);
1057         key.program_number = (int) floor(program_number + 0.5);
1058         assert(key.is_sane());
1059 }
1060
1061
1062 void
1063 MidiRegionView::alter_program_change(ControlEvent& old_program, const MIDI::Name::PatchPrimaryKey& new_patch)
1064 {
1065         // TODO: Get the real event here and alter them at the original times
1066         Evoral::Parameter bank_select_msb(MidiCCAutomation, old_program.channel, MIDI_CTL_MSB_BANK);
1067         boost::shared_ptr<Evoral::Control>  msb_control = _model->control(bank_select_msb);
1068         if (msb_control != 0) {
1069                 msb_control->set_float(float(new_patch.msb), true, old_program.time);
1070         }
1071
1072         // TODO: Get the real event here and alter them at the original times
1073         Evoral::Parameter bank_select_lsb(MidiCCAutomation, old_program.channel, MIDI_CTL_LSB_BANK);
1074         boost::shared_ptr<Evoral::Control>  lsb_control = _model->control(bank_select_lsb);
1075         if (lsb_control != 0) {
1076                 lsb_control->set_float(float(new_patch.lsb), true, old_program.time);
1077         }
1078
1079         Evoral::Parameter program_change(MidiPgmChangeAutomation, old_program.channel, 0);
1080         boost::shared_ptr<Evoral::Control>  program_control = _model->control(program_change);
1081
1082         assert(program_control != 0);
1083         program_control->set_float(float(new_patch.program_number), true, old_program.time);
1084
1085         redisplay_model();
1086 }
1087
1088 void
1089 MidiRegionView::program_selected(CanvasProgramChange& program, const MIDI::Name::PatchPrimaryKey& new_patch)
1090 {
1091         ControlEvent program_change_event(program.event_time(), program.program(), program.channel());
1092         alter_program_change(program_change_event, new_patch);
1093 }
1094
1095 void
1096 MidiRegionView::previous_program(CanvasProgramChange& program)
1097 {
1098         MIDI::Name::PatchPrimaryKey key;
1099         get_patch_key_at(program.event_time(), program.channel(), key);
1100
1101         boost::shared_ptr<MIDI::Name::Patch> patch =
1102                 MIDI::Name::MidiPatchManager::instance().previous_patch(
1103                                 _model_name,
1104                                 _custom_device_mode,
1105                                 program.channel(),
1106                                 key);
1107
1108         ControlEvent program_change_event(program.event_time(), program.program(), program.channel());
1109         if (patch) {
1110                 alter_program_change(program_change_event, patch->patch_primary_key());
1111         }
1112 }
1113
1114 void
1115 MidiRegionView::next_program(CanvasProgramChange& program)
1116 {
1117         MIDI::Name::PatchPrimaryKey key;
1118         get_patch_key_at(program.event_time(), program.channel(), key);
1119
1120         boost::shared_ptr<MIDI::Name::Patch> patch =
1121                 MIDI::Name::MidiPatchManager::instance().next_patch(
1122                                 _model_name,
1123                                 _custom_device_mode,
1124                                 program.channel(),
1125                                 key);
1126         ControlEvent program_change_event(program.event_time(), program.program(), program.channel());
1127         if (patch) {
1128                 alter_program_change(program_change_event, patch->patch_primary_key());
1129         }
1130 }
1131
1132 void
1133 MidiRegionView::delete_selection()
1134 {
1135         assert(_delta_command);
1136
1137         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1138                 if ((*i)->selected()) {
1139                         _delta_command->remove((*i)->note());
1140                 }
1141         }
1142
1143         _selection.clear();
1144 }
1145
1146 void
1147 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1148 {
1149         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1150                 if ((*i)->selected() && (*i) != ev) {
1151                         (*i)->selected(false);
1152                 }
1153         }
1154
1155         _selection.clear();
1156 }
1157
1158 void
1159 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1160 {
1161         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1162                 if ((*i) != ev) {
1163                         (*i)->selected(false);
1164                 }
1165         }
1166
1167         _selection.clear();
1168         _selection.insert(ev);
1169
1170         if ( ! ev->selected()) {
1171                 ev->selected(true);
1172         }
1173 }
1174
1175 void
1176 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
1177 {
1178         if ( ! add) {
1179                 clear_selection_except(ev);
1180         }
1181
1182         if (_selection.insert(ev).second) {
1183                 play_midi_note(ev->note());
1184         }
1185
1186         if ( ! ev->selected()) {
1187                 ev->selected(true);
1188         }
1189 }
1190
1191
1192 void
1193 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
1194 {
1195         if ( ! add) {
1196                 clear_selection_except(ev);
1197         }
1198
1199         _selection.erase(ev);
1200
1201         if (ev->selected()) {
1202                 ev->selected(false);
1203         }
1204 }
1205
1206
1207 void
1208 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
1209 {
1210         const double last_y = std::min(y1, y2);
1211         const double y      = std::max(y1, y2);
1212
1213         // TODO: Make this faster by storing the last updated selection rect, and only
1214         // adjusting things that are in the area that appears/disappeared.
1215         // We probably need a tree to be able to find events in O(log(n)) time.
1216
1217 #ifndef NDEBUG
1218         double last_x1 = 0.0;
1219 #endif
1220
1221         if (x1 < x2) {
1222                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1223 #ifndef NDEBUG
1224                         // Events should always be sorted by increasing x1() here
1225                         assert((*i)->x1() >= last_x1);
1226                         last_x1 = (*i)->x1();
1227 #endif
1228                         // Inside rectangle
1229                         if ((*i)->x1() >= x1 && (*i)->x1() <= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
1230                                 if (!(*i)->selected()) {
1231                                         (*i)->selected(true);
1232                                         _selection.insert(*i);
1233                                         play_midi_note((*i)->note());
1234                                 }
1235                         // Not inside rectangle
1236                         } else if ((*i)->selected()) {
1237                                 (*i)->selected(false);
1238                                 _selection.erase(*i);
1239                         }
1240                 }
1241         } else {
1242                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1243 #ifndef NDEBUG
1244                         // Events should always be sorted by increasing x1() here
1245                         assert((*i)->x1() >= last_x1);
1246                         last_x1 = (*i)->x1();
1247 #endif
1248                         // Inside rectangle
1249                         if ((*i)->x2() <= x1 && (*i)->x2() >= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
1250                                 if (!(*i)->selected()) {
1251                                         (*i)->selected(true);
1252                                         _selection.insert(*i);
1253                                         play_midi_note((*i)->note());
1254                                 }
1255                         // Not inside rectangle
1256                         } else if ((*i)->selected()) {
1257                                 (*i)->selected(false);
1258                                 _selection.erase(*i);
1259                         }
1260                 }
1261         }
1262 }
1263
1264
1265 void
1266 MidiRegionView::move_selection(double dx, double dy)
1267 {
1268         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
1269                 (*i)->move_event(dx, dy);
1270 }
1271
1272
1273 void
1274 MidiRegionView::note_dropped(CanvasNoteEvent* ev, double dt, uint8_t dnote)
1275 {
1276         // TODO: This would be faster/nicer with a MoveCommand that doesn't need to copy...
1277         if (_selection.find(ev) != _selection.end()) {
1278                 uint8_t lowest_note_in_selection  = midi_stream_view()->lowest_note();
1279                 uint8_t highest_note_in_selection = midi_stream_view()->highest_note();
1280                 uint8_t highest_note_difference = 0;
1281
1282                 // find highest and lowest notes first
1283                 for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1284                         uint8_t pitch = (*i)->note()->note();
1285                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
1286                         highest_note_in_selection = std::max(highest_note_in_selection, pitch);
1287                 }
1288
1289                 /*
1290                 cerr << "dnote: " << (int) dnote << endl;
1291                 cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
1292                      << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
1293                 cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
1294                      << int(highest_note_in_selection) << endl;
1295                 cerr << "selection size: " << _selection.size() << endl;
1296                 cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
1297                 */
1298
1299                 // Make sure the note pitch does not exceed the MIDI standard range
1300                 if (dnote <= 127 && (highest_note_in_selection + dnote > 127)) {
1301                         highest_note_difference = highest_note_in_selection - 127;
1302                 }
1303
1304                 start_delta_command(_("move notes"));
1305
1306                 for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ) {
1307                         Selection::iterator next = i;
1308                         ++next;
1309
1310                         const boost::shared_ptr<NoteType> copy(new NoteType(*(*i)->note().get()));
1311
1312                         // we need to snap here again in nframes64_t in order to be sample accurate
1313                         double start_frames = snap_to_frame(beats_to_frames((*i)->note()->time()) + dt);
1314
1315                         // keep notes inside region if dragged beyond left region bound
1316                         if (start_frames < _region->start()) {
1317                                 start_frames = _region->start();
1318                         }
1319
1320                         copy->set_time(frames_to_beats(start_frames));
1321
1322                         uint8_t original_pitch = (*i)->note()->note();
1323                         uint8_t new_pitch = original_pitch + dnote - highest_note_difference;
1324
1325                         // keep notes in standard midi range
1326                         clamp_to_0_127(new_pitch);
1327
1328                         // keep original pitch if note is dragged outside valid midi range
1329                         if ((original_pitch != 0 && new_pitch == 0)
1330                                         || (original_pitch != 127 && new_pitch == 127)) {
1331                                 new_pitch = original_pitch;
1332                         }
1333
1334                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
1335                         highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
1336
1337                         copy->set_note(new_pitch);
1338
1339                         command_remove_note(*i);
1340                         command_add_note(copy, (*i)->selected());
1341
1342                         i = next;
1343                 }
1344
1345                 apply_command();
1346
1347                 // care about notes being moved beyond the upper/lower bounds on the canvas
1348                 if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
1349                                 highest_note_in_selection > midi_stream_view()->highest_note()) {
1350                         midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
1351                 }
1352         }
1353 }
1354
1355 nframes64_t
1356 MidiRegionView::snap_to_frame(double x)
1357 {
1358         PublicEditor &editor = trackview.editor();
1359         // x is region relative, convert it to global absolute frames
1360         nframes64_t frame = editor.pixel_to_frame(x) + _region->position();
1361         editor.snap_to(frame);
1362         return frame - _region->position(); // convert back to region relative
1363 }
1364
1365 nframes64_t
1366 MidiRegionView::snap_to_frame(nframes64_t x)
1367 {
1368         PublicEditor &editor = trackview.editor();
1369         // x is region relative
1370         // convert x to global frame
1371         nframes64_t frame = x + _region->position();
1372         editor.snap_to(frame);
1373         // convert event_frame back to local coordinates relative to position
1374         frame -= _region->position();
1375         return frame;
1376 }
1377
1378 double
1379 MidiRegionView::snap_to_pixel(double x)
1380 {
1381         return (double) trackview.editor().frame_to_pixel(snap_to_frame(x));
1382 }
1383
1384 double
1385 MidiRegionView::get_position_pixels()
1386 {
1387         nframes64_t region_frame = get_position();
1388         return trackview.editor().frame_to_pixel(region_frame);
1389 }
1390
1391 nframes64_t
1392 MidiRegionView::beats_to_frames(double beats) const
1393 {
1394         const Meter& m = trackview.session().tempo_map().meter_at(_region->position());
1395         const Tempo& t = trackview.session().tempo_map().tempo_at(_region->position());
1396         return lrint(beats * m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar());
1397 }
1398
1399 double
1400 MidiRegionView::frames_to_beats(nframes64_t frames) const
1401 {
1402         const Meter& m = trackview.session().tempo_map().meter_at(_region->position());
1403         const Tempo& t = trackview.session().tempo_map().tempo_at(_region->position());
1404         return frames / m.frames_per_bar(t, trackview.session().frame_rate()) * m.beats_per_bar();
1405 }
1406
1407 void
1408 MidiRegionView::begin_resizing(CanvasNote::NoteEnd note_end)
1409 {
1410         _resize_data.clear();
1411
1412         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1413                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
1414
1415                 // only insert CanvasNotes into the map
1416                 if (note) {
1417                         NoteResizeData *resize_data = new NoteResizeData();
1418                         resize_data->canvas_note = note;
1419
1420                         // create a new SimpleRect from the note which will be the resize preview
1421                         SimpleRect *resize_rect = new SimpleRect(
1422                                         *group, note->x1(), note->y1(), note->x2(), note->y2());
1423
1424                         // calculate the colors: get the color settings
1425                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
1426                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
1427                                         128);
1428
1429                         // make the resize preview notes more transparent and bright
1430                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
1431
1432                         // calculate color based on note velocity
1433                         resize_rect->property_fill_color_rgba() = UINT_INTERPOLATE(
1434                                         CanvasNoteEvent::meter_style_fill_color(note->note()->velocity()),
1435                                         fill_color,
1436                                         0.85);
1437
1438                         resize_rect->property_outline_color_rgba() = CanvasNoteEvent::calculate_outline(
1439                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
1440
1441                         resize_data->resize_rect = resize_rect;
1442
1443                         if (note_end == CanvasNote::NOTE_ON) {
1444                                 resize_data->current_x = note->x1();
1445                         } else { // NOTE_OFF
1446                                 resize_data->current_x = note->x2();
1447                         }
1448
1449                         _resize_data.push_back(resize_data);
1450                 }
1451         }
1452 }
1453
1454 void
1455 MidiRegionView::update_resizing(CanvasNote::NoteEnd note_end, double x, bool relative)
1456 {
1457         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1458                 SimpleRect* resize_rect = (*i)->resize_rect;
1459                 CanvasNote* canvas_note = (*i)->canvas_note;
1460
1461                 const double region_start = get_position_pixels();
1462
1463                 if (relative) {
1464                         (*i)->current_x = (*i)->current_x + x;
1465                 } else {
1466                         // x is in track relative, transform it to region relative
1467                         (*i)->current_x = x - region_start;
1468                 }
1469
1470                 double current_x = (*i)->current_x;
1471
1472                 if (note_end == CanvasNote::NOTE_ON) {
1473                         resize_rect->property_x1() = snap_to_pixel(current_x);
1474                         resize_rect->property_x2() = canvas_note->x2();
1475                 } else {
1476                         resize_rect->property_x2() = snap_to_pixel(current_x);
1477                         resize_rect->property_x1() = canvas_note->x1();
1478                 }
1479         }
1480 }
1481
1482 void
1483 MidiRegionView::commit_resizing(CanvasNote::NoteEnd note_end, double event_x, bool relative)
1484 {
1485         start_delta_command(_("resize notes"));
1486
1487         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1488                 CanvasNote*  canvas_note = (*i)->canvas_note;
1489                 SimpleRect*  resize_rect = (*i)->resize_rect;
1490                 double       current_x   = (*i)->current_x;
1491                 const double position    = get_position_pixels();
1492
1493                 if (!relative) {
1494                         // event_x is in track relative, transform it to region relative
1495                         current_x = event_x - position;
1496                 }
1497
1498                 // because snapping works on world coordinates we have to transform current_x
1499                 // to world coordinates before snapping and transform it back afterwards
1500                 nframes64_t current_frame = snap_to_frame(current_x);
1501                 // transform to region start relative
1502                 current_frame += _region->start();
1503
1504                 const boost::shared_ptr<NoteType> copy(new NoteType(*(canvas_note->note().get())));
1505
1506                 // resize beginning of note
1507                 if (note_end == CanvasNote::NOTE_ON && current_frame < copy->end_time()) {
1508                         command_remove_note(canvas_note);
1509                         copy->on_event().time() = current_frame;
1510                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1511                 }
1512                 // resize end of note
1513                 if (note_end == CanvasNote::NOTE_OFF && current_frame > copy->time()) {
1514                         command_remove_note(canvas_note);
1515                         copy->off_event().time() = current_frame;
1516                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1517                 }
1518
1519                 delete resize_rect;
1520                 delete (*i);
1521         }
1522
1523         _resize_data.clear();
1524         apply_command();
1525 }
1526
1527 void
1528 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
1529 {
1530         const boost::shared_ptr<NoteType> copy(new NoteType(*(event->note().get())));
1531
1532         if (relative) {
1533                 uint8_t new_velocity = copy->velocity() + velocity;
1534                 clamp_to_0_127(new_velocity);
1535                 copy->set_velocity(new_velocity);
1536         } else {
1537                 copy->set_velocity(velocity);
1538         }
1539
1540         command_remove_note(event);
1541         command_add_note(copy, event->selected());
1542 }
1543
1544 void
1545 MidiRegionView::change_velocity(CanvasNoteEvent* ev, int8_t velocity, bool relative)
1546 {
1547         start_delta_command(_("change velocity"));
1548
1549         change_note_velocity(ev, velocity, relative);
1550
1551         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1552                 Selection::iterator next = i;
1553                 ++next;
1554                 if ( !(*((*i)->note()) == *(ev->note())) ) {
1555                         change_note_velocity(*i, velocity, relative);
1556                 }
1557                 i = next;
1558         }
1559
1560         apply_command();
1561 }
1562
1563 void
1564 MidiRegionView::change_channel(uint8_t channel)
1565 {
1566         start_delta_command(_("change channel"));
1567         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1568                 Selection::iterator next = i;
1569                 ++next;
1570
1571                 CanvasNoteEvent* event = *i;
1572                 const boost::shared_ptr<NoteType> copy(new NoteType(*(event->note().get())));
1573
1574                 copy->set_channel(channel);
1575
1576                 command_remove_note(event);
1577                 command_add_note(copy, event->selected());
1578
1579                 i = next;
1580         }
1581
1582         apply_command();
1583 }
1584
1585
1586 void
1587 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
1588 {
1589         if (ev->note() && _mouse_state == EraseTouchDragging) {
1590                 start_delta_command(_("note entered"));
1591                 ev->selected(true);
1592                 _delta_command->remove(ev->note());
1593         } else if (_mouse_state == SelectTouchDragging) {
1594                 note_selected(ev, true);
1595         }
1596 }
1597
1598
1599 void
1600 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
1601 {
1602         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
1603         if (msrc)
1604                 display_model(msrc->model());
1605 }
1606
1607 void
1608 MidiRegionView::set_frame_color()
1609 {
1610         if (frame) {
1611                 if (_selected && should_show_selection) {
1612                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
1613                 } else {
1614                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
1615                 }
1616         }
1617 }
1618
1619 void
1620 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
1621 {
1622         switch (mode) {
1623         case AllChannels:
1624         case FilterChannels:
1625                 _force_channel = -1;
1626                 break;
1627         case ForceChannel:
1628                 _force_channel = mask;
1629                 mask = 0xFFFF; // Show all notes as active (below)
1630         };
1631
1632         // Update notes for selection
1633         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1634                 (*i)->on_channel_selection_change(mask);
1635         }
1636
1637         _last_channel_selection = mask;
1638 }
1639
1640 void
1641 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
1642 {
1643         _model_name         = model;
1644         _custom_device_mode = custom_device_mode;
1645         redisplay_model();
1646 }
1647