gtk2_ardour/midi_region_view.cc

   1 /*
   2     Copyright (C) 2001-2007 Paul Davis
   3     Author: Dave Robillard
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include <cmath>
  21 #include <cassert>
  22 #include <algorithm>
  23 #include <ostream>
  24
  25 #include <gtkmm.h>
  26
  27 #include <gtkmm2ext/gtk_ui.h>
  28
  29 #include <sigc++/signal.h>
  30
  31 #include <ardour/playlist.h>
  32 #include <ardour/tempo.h>
  33 #include <ardour/midi_region.h>
  34 #include <ardour/midi_source.h>
  35 #include <ardour/midi_diskstream.h>
  36 #include <ardour/midi_model.h>
  37 #include <ardour/midi_patch_manager.h>
  38
  39 #include <evoral/Parameter.hpp>
  40 #include <evoral/Control.hpp>
  41
  42 #include "streamview.h"
  43 #include "midi_region_view.h"
  44 #include "midi_streamview.h"
  45 #include "midi_time_axis.h"
  46 #include "simpleline.h"
  47 #include "canvas-hit.h"
  48 #include "canvas-note.h"
  49 #include "canvas-program-change.h"
  50 #include "public_editor.h"
  51 #include "ghostregion.h"
  52 #include "midi_time_axis.h"
  53 #include "automation_time_axis.h"
  54 #include "automation_region_view.h"
  55 #include "utils.h"
  56 #include "midi_util.h"
  57 #include "gui_thread.h"
  58 #include "keyboard.h"
  59
  60 #include "i18n.h"
  61
  62 using namespace sigc;
  63 using namespace ARDOUR;
  64 using namespace PBD;
  65 using namespace Editing;
  66 using namespace ArdourCanvas;
  67
  68 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
  69                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color)
  70         : RegionView (parent, tv, r, spu, basic_color)
  71         , _force_channel(-1)
  72         , _last_channel_selection(0xFFFF)
  73         , _default_note_length(1.0)
  74         , _current_range_min(0)
  75         , _current_range_max(0)
  76         , _model_name(string())
  77         , _custom_device_mode(string())
  78         , _active_notes(0)
  79         , _note_group(new ArdourCanvas::Group(*parent))
  80         , _delta_command(NULL)
  81         , _mouse_state(None)
  82         , _pressed_button(0)
  83 {
  84         _note_group->raise_to_top();
  85 }
  86
  87 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
  88                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color,
  89                 TimeAxisViewItem::Visibility visibility)
  90         : RegionView (parent, tv, r, spu, basic_color, false, visibility)
  91         , _force_channel(-1)
  92         , _last_channel_selection(0xFFFF)
  93         , _default_note_length(1.0)
  94         , _model_name(string())
  95         , _custom_device_mode(string())
  96         , _active_notes(0)
  97         , _note_group(new ArdourCanvas::Group(*parent))
  98         , _delta_command(NULL)
  99         , _mouse_state(None)
 100         , _pressed_button(0)
 101
 102 {
 103         _note_group->raise_to_top();
 104 }
 105
 106
 107 MidiRegionView::MidiRegionView (const MidiRegionView& other)
 108         : RegionView (other)
 109         , _force_channel(-1)
 110         , _last_channel_selection(0xFFFF)
 111         , _default_note_length(1.0)
 112         , _model_name(string())
 113         , _custom_device_mode(string())
 114         , _active_notes(0)
 115         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 116         , _delta_command(NULL)
 117         , _mouse_state(None)
 118         , _pressed_button(0)
 119 {
 120         Gdk::Color c;
 121         int r,g,b,a;
 122
 123         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 124         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 125
 126         init (c, false);
 127 }
 128
 129 MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<MidiRegion> region)
 130         : RegionView (other, boost::shared_ptr<Region> (region))
 131         , _force_channel(-1)
 132         , _last_channel_selection(0xFFFF)
 133         , _default_note_length(1.0)
 134         , _model_name(string())
 135         , _custom_device_mode(string())
 136         , _active_notes(0)
 137         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 138         , _delta_command(NULL)
 139         , _mouse_state(None)
 140         , _pressed_button(0)
 141 {
 142         Gdk::Color c;
 143         int r,g,b,a;
 144
 145         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 146         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 147
 148         init (c, true);
 149 }
 150
 151 void
 152 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
 153 {
 154         if (wfd) {
 155                 midi_region()->midi_source(0)->load_model();
 156         }
 157
 158         _model = midi_region()->midi_source(0)->model();
 159         _enable_display = false;
 160
 161         RegionView::init (basic_color, false);
 162
 163         compute_colors (basic_color);
 164
 165         set_height (trackview.current_height());
 166
 167         region_muted ();
 168         region_sync_changed ();
 169         region_resized (BoundsChanged);
 170         region_locked ();
 171
 172         reset_width_dependent_items (_pixel_width);
 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         _sys_exes.clear();
 479 }
 480
 481
 482 void
 483 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 484 {
 485         _model = model;
 486         if (_enable_display) {
 487                 redisplay_model();
 488         }
 489 }
 490
 491
 492 void
 493 MidiRegionView::start_delta_command(string name)
 494 {
 495         if (!_delta_command) {
 496                 _delta_command = _model->new_delta_command(name);
 497         }
 498 }
 499
 500 void
 501 MidiRegionView::command_add_note(const boost::shared_ptr<NoteType> note, bool selected)
 502 {
 503         if (_delta_command) {
 504                 _delta_command->add(note);
 505         }
 506         if (selected) {
 507                 _marked_for_selection.insert(note);
 508         }
 509 }
 510
 511 void
 512 MidiRegionView::command_remove_note(ArdourCanvas::CanvasNoteEvent* ev)
 513 {
 514         if (_delta_command && ev->note()) {
 515                 _delta_command->remove(ev->note());
 516         }
 517 }
 518
 519 void
 520 MidiRegionView::apply_command()
 521 {
 522         if (!_delta_command) {
 523                 return;
 524         }
 525
 526         // Mark all selected notes for selection when model reloads
 527         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 528                 _marked_for_selection.insert((*i)->note());
 529         }
 530
 531         _model->apply_command(trackview.session(), _delta_command);
 532         _delta_command = NULL;
 533         midi_view()->midi_track()->diskstream()->playlist_modified();
 534
 535         _marked_for_selection.clear();
 536 }
 537
 538
 539 void
 540 MidiRegionView::abort_command()
 541 {
 542         delete _delta_command;
 543         _delta_command = NULL;
 544         clear_selection();
 545 }
 546
 547
 548 void
 549 MidiRegionView::redisplay_model()
 550 {
 551         // Don't redisplay the model if we're currently recording and displaying that
 552         if (_active_notes) {
 553                 return;
 554         }
 555
 556         if (_model) {
 557                 clear_events();
 558                 _model->read_lock();
 559
 560                 MidiModel::Notes notes = _model->notes();
 561
 562                 for (size_t i = 0; i < _model->n_notes(); ++i) {
 563                         add_note(_model->note_at(i));
 564                 }
 565
 566                 display_sysexes();
 567
 568                 display_program_changes();
 569
 570                 _model->read_unlock();
 571
 572         } else {
 573                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
 574         }
 575 }
 576
 577 void
 578 MidiRegionView::display_program_changes()
 579 {
 580         boost::shared_ptr<Evoral::Control> control = _model->control(MidiPgmChangeAutomation);
 581         if (!control) {
 582                 return;
 583         }
 584
 585         Glib::Mutex::Lock lock (control->list()->lock());
 586
 587         uint8_t channel = control->parameter().channel();
 588
 589         for (AutomationList::const_iterator event = control->list()->begin();
 590                         event != control->list()->end(); ++event) {
 591                 double event_time     = (*event)->when;
 592                 double program_number = floor((*event)->value + 0.5);
 593
 594                 // Get current value of bank select MSB at time of the program change
 595                 Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
 596                 boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
 597                 uint8_t msb = 0;
 598                 if (msb_control != 0) {
 599                         msb = uint8_t(floor(msb_control->get_float(true, event_time) + 0.5));
 600                 }
 601
 602                 // Get current value of bank select LSB at time of the program change
 603                 Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
 604                 boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
 605                 uint8_t lsb = 0;
 606                 if (lsb_control != 0) {
 607                         lsb = uint8_t(floor(lsb_control->get_float(true, event_time) + 0.5));
 608                 }
 609
 610                 MIDI::Name::PatchPrimaryKey patch_key(msb, lsb, program_number);
 611
 612                 boost::shared_ptr<MIDI::Name::Patch> patch =
 613                         MIDI::Name::MidiPatchManager::instance().find_patch(
 614                                         _model_name, _custom_device_mode, channel, patch_key);
 615
 616                 PCEvent program_change(event_time, uint8_t(program_number), channel);
 617
 618                 if (patch != 0) {
 619                         add_pgm_change(program_change, patch->name());
 620                 } else {
 621                         char buf[4];
 622                         snprintf(buf, 4, "%d", int(program_number));
 623                         add_pgm_change(program_change, buf);
 624                 }
 625         }
 626 }
 627
 628 void
 629 MidiRegionView::display_sysexes()
 630 {
 631         for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
 632                 ARDOUR::MidiModel::TimeType time = (*i)->time();
 633                 assert(time >= 0);
 634
 635                 ostringstream str;
 636                 str << hex;
 637                 for (uint32_t b = 0; b < (*i)->size(); ++b) {
 638                         str << int((*i)->buffer()[b]);
 639                         if (b != (*i)->size() -1) {
 640                                 str << " ";
 641                         }
 642                 }
 643                 string text = str.str();
 644
 645                 ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 646                 const double x = trackview.editor().frame_to_pixel(beats_to_frames(time));
 647
 648                 double height = midi_stream_view()->contents_height();
 649
 650                 boost::shared_ptr<CanvasSysEx> sysex = boost::shared_ptr<CanvasSysEx>(
 651                                 new CanvasSysEx(*this, *group, text, height, x, 1.0));
 652
 653                 // Show unless program change is beyond the region bounds
 654                 if (time - _region->start() >= _region->length() || time < _region->start()) {
 655                         sysex->hide();
 656                 } else {
 657                         sysex->show();
 658                 }
 659
 660                 _sys_exes.push_back(sysex);
 661         }
 662 }
 663
 664
 665 MidiRegionView::~MidiRegionView ()
 666 {
 667         in_destructor = true;
 668
 669         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 670
 671         if (_active_notes) {
 672                 end_write();
 673         }
 674
 675         _selection.clear();
 676         clear_events();
 677         delete _note_group;
 678         delete _delta_command;
 679 }
 680
 681
 682 void
 683 MidiRegionView::region_resized (Change what_changed)
 684 {
 685         RegionView::region_resized(what_changed);
 686
 687         if (what_changed & ARDOUR::PositionChanged) {
 688                 set_duration(_region->length(), 0);
 689                 if (_enable_display) {
 690                         redisplay_model();
 691                 }
 692         }
 693 }
 694
 695 void
 696 MidiRegionView::reset_width_dependent_items (double pixel_width)
 697 {
 698         RegionView::reset_width_dependent_items(pixel_width);
 699         assert(_pixel_width == pixel_width);
 700
 701         if (_enable_display) {
 702                 redisplay_model();
 703         }
 704 }
 705
 706 void
 707 MidiRegionView::set_height (double height)
 708 {
 709         static const double FUDGE = 2.0;
 710         const double old_height = _height;
 711         RegionView::set_height(height);
 712         _height = height - FUDGE;
 713
 714         apply_note_range(midi_stream_view()->lowest_note(),
 715                          midi_stream_view()->highest_note(),
 716                          height != old_height + FUDGE);
 717
 718         if (name_text) {
 719                 name_text->raise_to_top();
 720         }
 721 }
 722
 723
 724 /** Apply the current note range from the stream view
 725  * by repositioning/hiding notes as necessary
 726  */
 727 void
 728 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
 729 {
 730         if (!_enable_display) {
 731                 return;
 732         }
 733
 734         if (!force && _current_range_min == min && _current_range_max == max) {
 735                 return;
 736         }
 737
 738         _current_range_min = min;
 739         _current_range_max = max;
 740
 741         for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
 742                 CanvasNoteEvent* event = *i;
 743                 Item* item = dynamic_cast<Item*>(event);
 744                 assert(item);
 745                 if (event && event->note()) {
 746                         if (event->note()->note() < _current_range_min
 747                                         || event->note()->note() > _current_range_max) {
 748                                 if (canvas_item_visible(item)) {
 749                                         item->hide();
 750                                 }
 751                         } else {
 752                                 if (!canvas_item_visible(item)) {
 753                                         item->show();
 754                                 }
 755
 756                                 event->hide_velocity();
 757                                 if (CanvasNote* note = dynamic_cast<CanvasNote*>(event)) {
 758                                         const double y1 = midi_stream_view()->note_to_y(event->note()->note());
 759                                         const double y2 = y1 + floor(midi_stream_view()->note_height());
 760
 761                                         note->property_y1() = y1;
 762                                         note->property_y2() = y2;
 763                                 } else if (CanvasHit* hit = dynamic_cast<CanvasHit*>(event)) {
 764                                         double x = trackview.editor().frame_to_pixel(
 765                                                         beats_to_frames(event->note()->time()) - _region->start());
 766                                         const double diamond_size = midi_stream_view()->note_height() / 2.0;
 767                                         double y = midi_stream_view()->note_to_y(event->note()->note())
 768                                                          + ((diamond_size-2.0) / 4.0);
 769
 770                                         hit->set_height(diamond_size);
 771                                         hit->move(x-hit->x1(), y-hit->y1());
 772                                         hit->show();
 773                                 }
 774                                 if (event->selected()) {
 775                                         event->show_velocity();
 776                                 }
 777                         }
 778                 }
 779         }
 780
 781 }
 782
 783 GhostRegion*
 784 MidiRegionView::add_ghost (TimeAxisView& tv)
 785 {
 786         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 787         CanvasNote* note;
 788         assert(rtv);
 789
 790         double unit_position = _region->position () / samples_per_unit;
 791         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
 792         MidiGhostRegion* ghost;
 793
 794         if (mtv && mtv->midi_view()) {
 795                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group
 796                    to allow having midi notes on top of note lines and waveforms.
 797                  */
 798                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
 799         } else {
 800                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
 801         }
 802
 803         ghost->set_height ();
 804         ghost->set_duration (_region->length() / samples_per_unit);
 805         ghosts.push_back (ghost);
 806
 807         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 808                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
 809                         ghost->add_note(note);
 810                 }
 811         }
 812
 813         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 814
 815         return ghost;
 816 }
 817
 818
 819 /** Begin tracking note state for successive calls to add_event
 820  */
 821 void
 822 MidiRegionView::begin_write()
 823 {
 824         assert(!_active_notes);
 825         _active_notes = new CanvasNote*[128];
 826         for (unsigned i=0; i < 128; ++i) {
 827                 _active_notes[i] = NULL;
 828         }
 829 }
 830
 831
 832 /** Destroy note state for add_event
 833  */
 834 void
 835 MidiRegionView::end_write()
 836 {
 837         delete[] _active_notes;
 838         _active_notes = NULL;
 839         _marked_for_selection.clear();
 840 }
 841
 842
 843 /** Resolve an active MIDI note (while recording).
 844  */
 845 void
 846 MidiRegionView::resolve_note(uint8_t note, double end_time)
 847 {
 848         if (midi_view()->note_mode() != Sustained) {
 849                 return;
 850         }
 851
 852         if (_active_notes && _active_notes[note]) {
 853                 const nframes64_t end_time_frames = beats_to_frames(end_time);
 854                 _active_notes[note]->property_x2() = trackview.editor().frame_to_pixel(end_time_frames);
 855                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 856                 _active_notes[note] = NULL;
 857         }
 858 }
 859
 860
 861 /** Extend active notes to rightmost edge of region (if length is changed)
 862  */
 863 void
 864 MidiRegionView::extend_active_notes()
 865 {
 866         if (!_active_notes) {
 867                 return;
 868         }
 869
 870         for (unsigned i=0; i < 128; ++i) {
 871                 if (_active_notes[i]) {
 872                         _active_notes[i]->property_x2() = trackview.editor().frame_to_pixel(_region->length());
 873                 }
 874         }
 875 }
 876
 877 void
 878 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
 879 {
 880         if (!trackview.editor().sound_notes()) {
 881                 return;
 882         }
 883
 884         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
 885         assert(route_ui);
 886
 887         route_ui->midi_track()->write_immediate_event(
 888                         note->on_event().size(), note->on_event().buffer());
 889
 890         const double note_length_beats = (note->off_event().time() - note->on_event().time());
 891         nframes_t note_length_ms = beats_to_frames(note_length_beats)
 892                         * (1000 / (double)route_ui->session().nominal_frame_rate());
 893         Glib::signal_timeout().connect(bind(mem_fun(this, &MidiRegionView::play_midi_note_off), note),
 894                         note_length_ms, G_PRIORITY_DEFAULT);
 895 }
 896
 897 bool
 898 MidiRegionView::play_midi_note_off(boost::shared_ptr<NoteType> note)
 899 {
 900         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
 901         assert(route_ui);
 902
 903         route_ui->midi_track()->write_immediate_event(
 904                         note->off_event().size(), note->off_event().buffer());
 905
 906         return false;
 907 }
 908
 909 bool
 910 MidiRegionView::note_in_visible_range(const boost::shared_ptr<NoteType> note) const
 911 {
 912         const nframes64_t note_start_frames = beats_to_frames(note->time());
 913         bool outside = (note_start_frames - _region->start() >= _region->length())
 914                         || (note_start_frames < _region->start())
 915                         || (note->note() < midi_stream_view()->lowest_note())
 916                         || (note->note() > midi_stream_view()->highest_note());
 917         return !outside;
 918 }
 919
 920 /** Add a MIDI note to the view (with length).
 921  *
 922  * If in sustained mode, notes with length 0 will be considered active
 923  * notes, and resolve_note should be called when the corresponding note off
 924  * event arrives, to properly display the note.
 925  */
 926 void
 927 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note)
 928 {
 929         assert(note->time() >= 0);
 930         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
 931
 932         const nframes64_t note_start_frames = beats_to_frames(note->time());
 933         const nframes64_t note_end_frames   = beats_to_frames(note->end_time());
 934
 935         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 936
 937         CanvasNoteEvent* event = 0;
 938
 939         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
 940
 941         if (midi_view()->note_mode() == Sustained) {
 942                 const double y1 = midi_stream_view()->note_to_y(note->note());
 943                 const double note_endpixel =
 944                         trackview.editor().frame_to_pixel(note_end_frames - _region->start());
 945
 946                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
 947                 ev_rect->property_x1() = x;
 948                 ev_rect->property_y1() = y1;
 949                 if (note->length() > 0) {
 950                         ev_rect->property_x2() = note_endpixel;
 951                 } else {
 952                         ev_rect->property_x2() = trackview.editor().frame_to_pixel(_region->length());
 953                 }
 954                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 955
 956                 if (note->length() == 0) {
 957                         if (_active_notes) {
 958                                 assert(note->note() < 128);
 959                                 // If this note is already active there's a stuck note,
 960                                 // finish the old note rectangle
 961                                 if (_active_notes[note->note()]) {
 962                                         CanvasNote* const old_rect = _active_notes[note->note()];
 963                                         boost::shared_ptr<NoteType> old_note = old_rect->note();
 964                                         old_rect->property_x2() = x;
 965                                         old_rect->property_outline_what() = (guint32) 0xF;
 966                                 }
 967                                 _active_notes[note->note()] = ev_rect;
 968                         }
 969                         /* outline all but right edge */
 970                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 971                 } else {
 972                         /* outline all edges */
 973                         ev_rect->property_outline_what() = (guint32) 0xF;
 974                 }
 975
 976                 event = ev_rect;
 977
 978                 MidiGhostRegion* gr;
 979                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 980                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 981                                 gr->add_note(ev_rect);
 982                         }
 983                 }
 984
 985         } else if (midi_view()->note_mode() == Percussive) {
 986                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 987                 const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
 988
 989                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
 990                 ev_diamond->move(x, y);
 991                 event = ev_diamond;
 992         } else {
 993                 event = 0;
 994         }
 995
 996         if (event) {
 997                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
 998                         note_selected(event, true);
 999                 }
1000                 event->on_channel_selection_change(_last_channel_selection);
1001                 _events.push_back(event);
1002                 if (note_in_visible_range(note)) {
1003                         event->show();
1004                 } else {
1005                         event->hide();
1006                 }
1007         }
1008 }
1009
1010 void
1011 MidiRegionView::add_pgm_change(PCEvent& program, const string& displaytext)
1012 {
1013         assert(program.time >= 0);
1014
1015         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1016         const double x = trackview.editor().frame_to_pixel(beats_to_frames(program.time));
1017
1018         double height = midi_stream_view()->contents_height();
1019
1020         boost::shared_ptr<CanvasProgramChange> pgm_change = boost::shared_ptr<CanvasProgramChange>(
1021                         new CanvasProgramChange(*this, *group,
1022                                         displaytext,
1023                                         height,
1024                                         x, 1.0,
1025                                         _model_name,
1026                                         _custom_device_mode,
1027                                         program.time, program.channel, program.value));
1028
1029         // Show unless program change is beyond the region bounds
1030         if (program.time - _region->start() >= _region->length() || program.time < _region->start()) {
1031                 pgm_change->hide();
1032         } else {
1033                 pgm_change->show();
1034         }
1035
1036         _pgm_changes.push_back(pgm_change);
1037 }
1038
1039 void
1040 MidiRegionView::get_patch_key_at(double time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1041 {
1042         cerr << "getting patch key at " << time << " for channel " << channel << endl;
1043         Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1044         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1045         float msb = -1.0;
1046         if (msb_control != 0) {
1047                 msb = int(msb_control->get_float(true, time));
1048                 cerr << "got msb " << msb;
1049         }
1050
1051         Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1052         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1053         float lsb = -1.0;
1054         if (lsb_control != 0) {
1055                 lsb = lsb_control->get_float(true, time);
1056                 cerr << " got lsb " << lsb;
1057         }
1058
1059         Evoral::Parameter program_change(MidiPgmChangeAutomation, channel, 0);
1060         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1061         float program_number = -1.0;
1062         if (program_control != 0) {
1063                 program_number = program_control->get_float(true, time);
1064                 cerr << " got program " << program_number << endl;
1065         }
1066
1067         key.msb = (int) floor(msb + 0.5);
1068         key.lsb = (int) floor(lsb + 0.5);
1069         key.program_number = (int) floor(program_number + 0.5);
1070         assert(key.is_sane());
1071 }
1072
1073
1074 void
1075 MidiRegionView::alter_program_change(PCEvent& old_program, const MIDI::Name::PatchPrimaryKey& new_patch)
1076 {
1077         // TODO: Get the real event here and alter them at the original times
1078         Evoral::Parameter bank_select_msb(MidiCCAutomation, old_program.channel, MIDI_CTL_MSB_BANK);
1079         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1080         if (msb_control != 0) {
1081                 msb_control->set_float(float(new_patch.msb), true, old_program.time);
1082         }
1083
1084         // TODO: Get the real event here and alter them at the original times
1085         Evoral::Parameter bank_select_lsb(MidiCCAutomation, old_program.channel, MIDI_CTL_LSB_BANK);
1086         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1087         if (lsb_control != 0) {
1088                 lsb_control->set_float(float(new_patch.lsb), true, old_program.time);
1089         }
1090
1091         Evoral::Parameter program_change(MidiPgmChangeAutomation, old_program.channel, 0);
1092         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1093
1094         assert(program_control != 0);
1095         program_control->set_float(float(new_patch.program_number), true, old_program.time);
1096
1097         redisplay_model();
1098 }
1099
1100 void
1101 MidiRegionView::program_selected(CanvasProgramChange& program, const MIDI::Name::PatchPrimaryKey& new_patch)
1102 {
1103         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1104         alter_program_change(program_change_event, new_patch);
1105 }
1106
1107 void
1108 MidiRegionView::previous_program(CanvasProgramChange& program)
1109 {
1110         MIDI::Name::PatchPrimaryKey key;
1111         get_patch_key_at(program.event_time(), program.channel(), key);
1112
1113         boost::shared_ptr<MIDI::Name::Patch> patch =
1114                 MIDI::Name::MidiPatchManager::instance().previous_patch(
1115                                 _model_name,
1116                                 _custom_device_mode,
1117                                 program.channel(),
1118                                 key);
1119
1120         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1121         if (patch) {
1122                 alter_program_change(program_change_event, patch->patch_primary_key());
1123         }
1124 }
1125
1126 void
1127 MidiRegionView::next_program(CanvasProgramChange& program)
1128 {
1129         MIDI::Name::PatchPrimaryKey key;
1130         get_patch_key_at(program.event_time(), program.channel(), key);
1131
1132         boost::shared_ptr<MIDI::Name::Patch> patch =
1133                 MIDI::Name::MidiPatchManager::instance().next_patch(
1134                                 _model_name,
1135                                 _custom_device_mode,
1136                                 program.channel(),
1137                                 key);
1138
1139         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1140         if (patch) {
1141                 alter_program_change(program_change_event, patch->patch_primary_key());
1142         }
1143 }
1144
1145 void
1146 MidiRegionView::delete_selection()
1147 {
1148         assert(_delta_command);
1149
1150         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1151                 if ((*i)->selected()) {
1152                         _delta_command->remove((*i)->note());
1153                 }
1154         }
1155
1156         _selection.clear();
1157 }
1158
1159 void
1160 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1161 {
1162         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1163                 if ((*i)->selected() && (*i) != ev) {
1164                         (*i)->selected(false);
1165                 }
1166         }
1167
1168         _selection.clear();
1169 }
1170
1171 void
1172 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1173 {
1174         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1175                 if ((*i) != ev) {
1176                         (*i)->selected(false);
1177                 }
1178         }
1179
1180         _selection.clear();
1181         _selection.insert(ev);
1182
1183         if ( ! ev->selected()) {
1184                 ev->selected(true);
1185         }
1186 }
1187
1188 void
1189 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
1190 {
1191         if ( ! add) {
1192                 clear_selection_except(ev);
1193         }
1194
1195         if (_selection.insert(ev).second) {
1196                 play_midi_note(ev->note());
1197         }
1198
1199         if ( ! ev->selected()) {
1200                 ev->selected(true);
1201         }
1202 }
1203
1204
1205 void
1206 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
1207 {
1208         if ( ! add) {
1209                 clear_selection_except(ev);
1210         }
1211
1212         _selection.erase(ev);
1213
1214         if (ev->selected()) {
1215                 ev->selected(false);
1216         }
1217 }
1218
1219
1220 void
1221 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
1222 {
1223         const double last_y = std::min(y1, y2);
1224         const double y      = std::max(y1, y2);
1225
1226         // TODO: Make this faster by storing the last updated selection rect, and only
1227         // adjusting things that are in the area that appears/disappeared.
1228         // We probably need a tree to be able to find events in O(log(n)) time.
1229
1230 #ifndef NDEBUG
1231         double last_x1 = 0.0;
1232 #endif
1233
1234         if (x1 < x2) {
1235                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1236 #ifndef NDEBUG
1237                         // Events should always be sorted by increasing x1() here
1238                         assert((*i)->x1() >= last_x1);
1239                         last_x1 = (*i)->x1();
1240 #endif
1241                         // Inside rectangle
1242                         if ((*i)->x1() >= x1 && (*i)->x1() <= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
1243                                 if (!(*i)->selected()) {
1244                                         (*i)->selected(true);
1245                                         _selection.insert(*i);
1246                                         play_midi_note((*i)->note());
1247                                 }
1248                         // Not inside rectangle
1249                         } else if ((*i)->selected()) {
1250                                 (*i)->selected(false);
1251                                 _selection.erase(*i);
1252                         }
1253                 }
1254         } else {
1255                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1256 #ifndef NDEBUG
1257                         // Events should always be sorted by increasing x1() here
1258                         assert((*i)->x1() >= last_x1);
1259                         last_x1 = (*i)->x1();
1260 #endif
1261                         // Inside rectangle
1262                         if ((*i)->x2() <= x1 && (*i)->x2() >= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
1263                                 if (!(*i)->selected()) {
1264                                         (*i)->selected(true);
1265                                         _selection.insert(*i);
1266                                         play_midi_note((*i)->note());
1267                                 }
1268                         // Not inside rectangle
1269                         } else if ((*i)->selected()) {
1270                                 (*i)->selected(false);
1271                                 _selection.erase(*i);
1272                         }
1273                 }
1274         }
1275 }
1276
1277
1278 void
1279 MidiRegionView::move_selection(double dx, double dy)
1280 {
1281         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
1282                 (*i)->move_event(dx, dy);
1283 }
1284
1285
1286 void
1287 MidiRegionView::note_dropped(CanvasNoteEvent* ev, double dt, uint8_t dnote)
1288 {
1289         // TODO: This would be faster/nicer with a MoveCommand that doesn't need to copy...
1290         if (_selection.find(ev) == _selection.end()) {
1291                 return;
1292         }
1293
1294         uint8_t lowest_note_in_selection  = midi_stream_view()->lowest_note();
1295         uint8_t highest_note_in_selection = midi_stream_view()->highest_note();
1296         uint8_t highest_note_difference = 0;
1297
1298         // find highest and lowest notes first
1299         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1300                 uint8_t pitch = (*i)->note()->note();
1301                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
1302                 highest_note_in_selection = std::max(highest_note_in_selection, pitch);
1303         }
1304
1305         /*
1306         cerr << "dnote: " << (int) dnote << endl;
1307         cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
1308              << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
1309         cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
1310              << int(highest_note_in_selection) << endl;
1311         cerr << "selection size: " << _selection.size() << endl;
1312         cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
1313         */
1314
1315         // Make sure the note pitch does not exceed the MIDI standard range
1316         if (dnote <= 127 && (highest_note_in_selection + dnote > 127)) {
1317                 highest_note_difference = highest_note_in_selection - 127;
1318         }
1319
1320         start_delta_command(_("move notes"));
1321
1322         for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ) {
1323                 Selection::iterator next = i;
1324                 ++next;
1325
1326                 const boost::shared_ptr<NoteType> copy(new NoteType(*(*i)->note().get()));
1327
1328                 // we need to snap here again in nframes64_t in order to be sample accurate
1329                 double start_frames = snap_to_frame(beats_to_frames((*i)->note()->time()) + dt);
1330
1331                 // keep notes inside region if dragged beyond left region bound
1332                 if (start_frames < _region->start()) {
1333                         start_frames = _region->start();
1334                 }
1335
1336                 copy->set_time(frames_to_beats(start_frames));
1337
1338                 uint8_t original_pitch = (*i)->note()->note();
1339                 uint8_t new_pitch = original_pitch + dnote - highest_note_difference;
1340
1341                 // keep notes in standard midi range
1342                 clamp_to_0_127(new_pitch);
1343
1344                 // keep original pitch if note is dragged outside valid midi range
1345                 if ((original_pitch != 0 && new_pitch == 0)
1346                                 || (original_pitch != 127 && new_pitch == 127)) {
1347                         new_pitch = original_pitch;
1348                 }
1349
1350                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
1351                 highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
1352
1353                 copy->set_note(new_pitch);
1354
1355                 command_remove_note(*i);
1356                 command_add_note(copy, (*i)->selected());
1357
1358                 i = next;
1359         }
1360
1361         apply_command();
1362
1363         // care about notes being moved beyond the upper/lower bounds on the canvas
1364         if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
1365                         highest_note_in_selection > midi_stream_view()->highest_note()) {
1366                 midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
1367         }
1368 }
1369
1370 nframes64_t
1371 MidiRegionView::snap_to_frame(double x)
1372 {
1373         PublicEditor &editor = trackview.editor();
1374         // x is region relative, convert it to global absolute frames
1375         nframes64_t frame = editor.pixel_to_frame(x) + _region->position();
1376         editor.snap_to(frame);
1377         return frame - _region->position(); // convert back to region relative
1378 }
1379
1380 nframes64_t
1381 MidiRegionView::snap_to_frame(nframes64_t x)
1382 {
1383         PublicEditor &editor = trackview.editor();
1384         // x is region relative
1385         // convert x to global frame
1386         nframes64_t frame = x + _region->position();
1387         editor.snap_to(frame);
1388         // convert event_frame back to local coordinates relative to position
1389         frame -= _region->position();
1390         return frame;
1391 }
1392
1393 double
1394 MidiRegionView::snap_to_pixel(double x)
1395 {
1396         return (double) trackview.editor().frame_to_pixel(snap_to_frame(x));
1397 }
1398
1399 double
1400 MidiRegionView::get_position_pixels()
1401 {
1402         nframes64_t region_frame = get_position();
1403         return trackview.editor().frame_to_pixel(region_frame);
1404 }
1405
1406 nframes64_t
1407 MidiRegionView::beats_to_frames(double beats) const
1408 {
1409         return _time_converter.to(beats);
1410 }
1411
1412 double
1413 MidiRegionView::frames_to_beats(nframes64_t frames) const
1414 {
1415         return _time_converter.from(frames);
1416 }
1417
1418 void
1419 MidiRegionView::begin_resizing(CanvasNote::NoteEnd note_end)
1420 {
1421         _resize_data.clear();
1422
1423         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1424                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
1425
1426                 // only insert CanvasNotes into the map
1427                 if (note) {
1428                         NoteResizeData *resize_data = new NoteResizeData();
1429                         resize_data->canvas_note = note;
1430
1431                         // create a new SimpleRect from the note which will be the resize preview
1432                         SimpleRect *resize_rect = new SimpleRect(
1433                                         *group, note->x1(), note->y1(), note->x2(), note->y2());
1434
1435                         // calculate the colors: get the color settings
1436                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
1437                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
1438                                         128);
1439
1440                         // make the resize preview notes more transparent and bright
1441                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
1442
1443                         // calculate color based on note velocity
1444                         resize_rect->property_fill_color_rgba() = UINT_INTERPOLATE(
1445                                         CanvasNoteEvent::meter_style_fill_color(note->note()->velocity()),
1446                                         fill_color,
1447                                         0.85);
1448
1449                         resize_rect->property_outline_color_rgba() = CanvasNoteEvent::calculate_outline(
1450                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
1451
1452                         resize_data->resize_rect = resize_rect;
1453
1454                         if (note_end == CanvasNote::NOTE_ON) {
1455                                 resize_data->current_x = note->x1();
1456                         } else { // NOTE_OFF
1457                                 resize_data->current_x = note->x2();
1458                         }
1459
1460                         _resize_data.push_back(resize_data);
1461                 }
1462         }
1463 }
1464
1465 void
1466 MidiRegionView::update_resizing(CanvasNote::NoteEnd note_end, double x, bool relative)
1467 {
1468         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1469                 SimpleRect* resize_rect = (*i)->resize_rect;
1470                 CanvasNote* canvas_note = (*i)->canvas_note;
1471
1472                 const double region_start = get_position_pixels();
1473
1474                 if (relative) {
1475                         (*i)->current_x = (*i)->current_x + x;
1476                 } else {
1477                         // x is in track relative, transform it to region relative
1478                         (*i)->current_x = x - region_start;
1479                 }
1480
1481                 double current_x = (*i)->current_x;
1482
1483                 if (note_end == CanvasNote::NOTE_ON) {
1484                         resize_rect->property_x1() = snap_to_pixel(current_x);
1485                         resize_rect->property_x2() = canvas_note->x2();
1486                 } else {
1487                         resize_rect->property_x2() = snap_to_pixel(current_x);
1488                         resize_rect->property_x1() = canvas_note->x1();
1489                 }
1490         }
1491 }
1492
1493 void
1494 MidiRegionView::commit_resizing(CanvasNote::NoteEnd note_end, double event_x, bool relative)
1495 {
1496         start_delta_command(_("resize notes"));
1497
1498         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1499                 CanvasNote*  canvas_note = (*i)->canvas_note;
1500                 SimpleRect*  resize_rect = (*i)->resize_rect;
1501                 double       current_x   = (*i)->current_x;
1502                 const double position    = get_position_pixels();
1503
1504                 if (!relative) {
1505                         // event_x is in track relative, transform it to region relative
1506                         current_x = event_x - position;
1507                 }
1508
1509                 // because snapping works on world coordinates we have to transform current_x
1510                 // to world coordinates before snapping and transform it back afterwards
1511                 nframes64_t current_frame = snap_to_frame(current_x);
1512                 // transform to region start relative
1513                 current_frame += _region->start();
1514
1515                 const boost::shared_ptr<NoteType> copy(new NoteType(*(canvas_note->note().get())));
1516
1517                 // resize beginning of note
1518                 if (note_end == CanvasNote::NOTE_ON && current_frame < copy->end_time()) {
1519                         command_remove_note(canvas_note);
1520                         copy->on_event().time() = current_frame;
1521                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1522                 }
1523                 // resize end of note
1524                 if (note_end == CanvasNote::NOTE_OFF && current_frame > copy->time()) {
1525                         command_remove_note(canvas_note);
1526                         copy->off_event().time() = current_frame;
1527                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1528                 }
1529
1530                 delete resize_rect;
1531                 delete (*i);
1532         }
1533
1534         _resize_data.clear();
1535         apply_command();
1536 }
1537
1538 void
1539 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
1540 {
1541         const boost::shared_ptr<NoteType> copy(new NoteType(*(event->note().get())));
1542
1543         if (relative) {
1544                 uint8_t new_velocity = copy->velocity() + velocity;
1545                 clamp_to_0_127(new_velocity);
1546                 copy->set_velocity(new_velocity);
1547         } else {
1548                 copy->set_velocity(velocity);
1549         }
1550
1551         command_remove_note(event);
1552         command_add_note(copy, event->selected());
1553 }
1554
1555 void
1556 MidiRegionView::change_velocity(CanvasNoteEvent* ev, int8_t velocity, bool relative)
1557 {
1558         start_delta_command(_("change velocity"));
1559
1560         change_note_velocity(ev, velocity, relative);
1561
1562         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1563                 Selection::iterator next = i;
1564                 ++next;
1565                 if ( !(*((*i)->note()) == *(ev->note())) ) {
1566                         change_note_velocity(*i, velocity, relative);
1567                 }
1568                 i = next;
1569         }
1570
1571         apply_command();
1572 }
1573
1574 void
1575 MidiRegionView::change_channel(uint8_t channel)
1576 {
1577         start_delta_command(_("change channel"));
1578         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1579                 Selection::iterator next = i;
1580                 ++next;
1581
1582                 CanvasNoteEvent* event = *i;
1583                 const boost::shared_ptr<NoteType> copy(new NoteType(*(event->note().get())));
1584
1585                 copy->set_channel(channel);
1586
1587                 command_remove_note(event);
1588                 command_add_note(copy, event->selected());
1589
1590                 i = next;
1591         }
1592
1593         apply_command();
1594 }
1595
1596
1597 void
1598 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
1599 {
1600         if (ev->note() && _mouse_state == EraseTouchDragging) {
1601                 start_delta_command(_("note entered"));
1602                 ev->selected(true);
1603                 _delta_command->remove(ev->note());
1604         } else if (_mouse_state == SelectTouchDragging) {
1605                 note_selected(ev, true);
1606         }
1607 }
1608
1609
1610 void
1611 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
1612 {
1613         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
1614         if (msrc)
1615                 display_model(msrc->model());
1616 }
1617
1618 void
1619 MidiRegionView::set_frame_color()
1620 {
1621         if (frame) {
1622                 if (_selected && should_show_selection) {
1623                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
1624                 } else {
1625                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
1626                 }
1627         }
1628 }
1629
1630 void
1631 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
1632 {
1633         switch (mode) {
1634         case AllChannels:
1635         case FilterChannels:
1636                 _force_channel = -1;
1637                 break;
1638         case ForceChannel:
1639                 _force_channel = mask;
1640                 mask = 0xFFFF; // Show all notes as active (below)
1641         };
1642
1643         // Update notes for selection
1644         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1645                 (*i)->on_channel_selection_change(mask);
1646         }
1647
1648         _last_channel_selection = mask;
1649 }
1650
1651 void
1652 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
1653 {
1654         _model_name         = model;
1655         _custom_device_mode = custom_device_mode;
1656         redisplay_model();
1657 }
1658