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 "automation_region_view.h"
  43 #include "automation_time_axis.h"
  44 #include "canvas-hit.h"
  45 #include "canvas-note.h"
  46 #include "canvas-program-change.h"
  47 #include "ghostregion.h"
  48 #include "gui_thread.h"
  49 #include "keyboard.h"
  50 #include "midi_region_view.h"
  51 #include "midi_streamview.h"
  52 #include "midi_time_axis.h"
  53 #include "midi_time_axis.h"
  54 #include "midi_util.h"
  55 #include "public_editor.h"
  56 #include "selection.h"
  57 #include "simpleline.h"
  58 #include "streamview.h"
  59 #include "utils.h"
  60
  61 #include "i18n.h"
  62
  63 using namespace sigc;
  64 using namespace ARDOUR;
  65 using namespace PBD;
  66 using namespace Editing;
  67 using namespace ArdourCanvas;
  68
  69 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
  70                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color const & basic_color)
  71         : RegionView (parent, tv, r, spu, basic_color)
  72         , _force_channel(-1)
  73         , _last_channel_selection(0xFFFF)
  74         , _default_note_length(1.0)
  75         , _current_range_min(0)
  76         , _current_range_max(0)
  77         , _model_name(string())
  78         , _custom_device_mode(string())
  79         , _active_notes(0)
  80         , _note_group(new ArdourCanvas::Group(*parent))
  81         , _delta_command(NULL)
  82         , _mouse_state(None)
  83         , _pressed_button(0)
  84 {
  85         _note_group->raise_to_top();
  86 }
  87
  88 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv,
  89                 boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color,
  90                 TimeAxisViewItem::Visibility visibility)
  91         : RegionView (parent, tv, r, spu, basic_color, false, visibility)
  92         , _force_channel(-1)
  93         , _last_channel_selection(0xFFFF)
  94         , _default_note_length(1.0)
  95         , _model_name(string())
  96         , _custom_device_mode(string())
  97         , _active_notes(0)
  98         , _note_group(new ArdourCanvas::Group(*parent))
  99         , _delta_command(NULL)
 100         , _mouse_state(None)
 101         , _pressed_button(0)
 102
 103 {
 104         _note_group->raise_to_top();
 105 }
 106
 107
 108 MidiRegionView::MidiRegionView (const MidiRegionView& other)
 109         : sigc::trackable(other)
 110         , RegionView (other)
 111         , _force_channel(-1)
 112         , _last_channel_selection(0xFFFF)
 113         , _default_note_length(1.0)
 114         , _model_name(string())
 115         , _custom_device_mode(string())
 116         , _active_notes(0)
 117         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 118         , _delta_command(NULL)
 119         , _mouse_state(None)
 120         , _pressed_button(0)
 121 {
 122         Gdk::Color c;
 123         int r,g,b,a;
 124
 125         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 126         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 127
 128         init (c, false);
 129 }
 130
 131 MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<MidiRegion> region)
 132         : RegionView (other, boost::shared_ptr<Region> (region))
 133         , _force_channel(-1)
 134         , _last_channel_selection(0xFFFF)
 135         , _default_note_length(1.0)
 136         , _model_name(string())
 137         , _custom_device_mode(string())
 138         , _active_notes(0)
 139         , _note_group(new ArdourCanvas::Group(*get_canvas_group()))
 140         , _delta_command(NULL)
 141         , _mouse_state(None)
 142         , _pressed_button(0)
 143 {
 144         Gdk::Color c;
 145         int r,g,b,a;
 146
 147         UINT_TO_RGBA (other.fill_color, &r, &g, &b, &a);
 148         c.set_rgb_p (r/255.0, g/255.0, b/255.0);
 149
 150         init (c, true);
 151 }
 152
 153 void
 154 MidiRegionView::init (Gdk::Color const & basic_color, bool wfd)
 155 {
 156         if (wfd) {
 157                 midi_region()->midi_source(0)->load_model();
 158         }
 159
 160         _model = midi_region()->midi_source(0)->model();
 161         _enable_display = false;
 162
 163         RegionView::init (basic_color, false);
 164
 165         compute_colors (basic_color);
 166
 167         set_height (trackview.current_height());
 168
 169         region_muted ();
 170         region_sync_changed ();
 171         region_resized (BoundsChanged);
 172         region_locked ();
 173
 174         reset_width_dependent_items (_pixel_width);
 175
 176         set_colors ();
 177
 178         _enable_display = true;
 179         if (_model) {
 180                 if (wfd) {
 181                         redisplay_model();
 182                 }
 183                 _model->ContentsChanged.connect(sigc::mem_fun(this, &MidiRegionView::redisplay_model));
 184         }
 185
 186         group->raise_to_top();
 187         group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event), false);
 188
 189         midi_view()->signal_channel_mode_changed().connect(
 190                         mem_fun(this, &MidiRegionView::midi_channel_mode_changed));
 191
 192         midi_view()->signal_midi_patch_settings_changed().connect(
 193                         mem_fun(this, &MidiRegionView::midi_patch_settings_changed));
 194 }
 195
 196 bool
 197 MidiRegionView::canvas_event(GdkEvent* ev)
 198 {
 199         PublicEditor& editor (trackview.editor());
 200
 201         if (!editor.internal_editing()) {
 202                 return false;
 203         }
 204
 205         static double drag_start_x, drag_start_y;
 206         static double last_x, last_y;
 207         double event_x, event_y;
 208         nframes64_t event_frame = 0;
 209
 210         static ArdourCanvas::SimpleRect* drag_rect = NULL;
 211
 212         switch (ev->type) {
 213         case GDK_KEY_PRESS:
 214                 if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 215                         _mouse_state = SelectTouchDragging;
 216                         return true;
 217                 } else if (ev->key.keyval == GDK_Escape) {
 218                         clear_selection();
 219                         _mouse_state = None;
 220                 }
 221                 return false;
 222
 223         case GDK_KEY_RELEASE:
 224                 if (ev->key.keyval == GDK_Delete) {
 225                         delete_selection();
 226                         apply_command();
 227                         return true;
 228                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 229                         _mouse_state = None;
 230                         return true;
 231                 }
 232                 return false;
 233
 234         case GDK_BUTTON_PRESS:
 235                 if (_mouse_state != SelectTouchDragging && ev->button.button == 1) {
 236                         _pressed_button = ev->button.button;
 237                         _mouse_state = Pressed;
 238                         return true;
 239                 }
 240                 _pressed_button = ev->button.button;
 241                 return true;
 242
 243         case GDK_2BUTTON_PRESS:
 244                 return true;
 245
 246         case GDK_ENTER_NOTIFY:
 247                 /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 248                 Keyboard::magic_widget_grab_focus();
 249                 group->grab_focus();
 250                 break;
 251
 252         case GDK_MOTION_NOTIFY:
 253                 event_x = ev->motion.x;
 254                 event_y = ev->motion.y;
 255                 group->w2i(event_x, event_y);
 256
 257                 // convert event_x to global frame
 258                 event_frame = trackview.editor().pixel_to_frame(event_x) + _region->position();
 259                 trackview.editor().snap_to(event_frame);
 260                 // convert event_frame back to local coordinates relative to position
 261                 event_frame -= _region->position();
 262
 263                 switch (_mouse_state) {
 264                 case Pressed: // Drag start
 265
 266                         // Select drag start
 267                         if (_pressed_button == 1 && editor.current_mouse_mode() == MouseRange) {
 268                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 269                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 270                                 last_x = event_x;
 271                                 last_y = event_y;
 272                                 drag_start_x = event_x;
 273                                 drag_start_y = event_y;
 274
 275                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 276                                 drag_rect->property_x1() = event_x;
 277                                 drag_rect->property_y1() = event_y;
 278                                 drag_rect->property_x2() = event_x;
 279                                 drag_rect->property_y2() = event_y;
 280                                 drag_rect->property_outline_what() = 0xFF;
 281                                 drag_rect->property_outline_color_rgba()
 282                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 283                                 drag_rect->property_fill_color_rgba()
 284                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 285
 286                                 _mouse_state = SelectRectDragging;
 287                                 return true;
 288
 289                         // Add note drag start
 290                         } else if (editor.current_mouse_mode() == MouseObject) {
 291                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 292                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 293                                 last_x = event_x;
 294                                 last_y = event_y;
 295                                 drag_start_x = event_x;
 296                                 drag_start_y = event_y;
 297
 298                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 299                                 drag_rect->property_x1() = trackview.editor().frame_to_pixel(event_frame);
 300
 301                                 drag_rect->property_y1() = midi_stream_view()->note_to_y(
 302                                                 midi_stream_view()->y_to_note(event_y));
 303                                 drag_rect->property_x2() = event_x;
 304                                 drag_rect->property_y2() = drag_rect->property_y1()
 305                                                          + floor(midi_stream_view()->note_height());
 306                                 drag_rect->property_outline_what() = 0xFF;
 307                                 drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 308                                 drag_rect->property_fill_color_rgba()    = 0xFFFFFF66;
 309
 310                                 _mouse_state = AddDragging;
 311                                 return true;
 312                         }
 313
 314                         return false;
 315
 316                 case SelectRectDragging: // Select drag motion
 317                 case AddDragging: // Add note drag motion
 318                         if (ev->motion.is_hint) {
 319                                 int t_x;
 320                                 int t_y;
 321                                 GdkModifierType state;
 322                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 323                                 event_x = t_x;
 324                                 event_y = t_y;
 325                         }
 326
 327                         if (_mouse_state == AddDragging)
 328                                 event_x = trackview.editor().frame_to_pixel(event_frame);
 329
 330                         if (drag_rect) {
 331                                 if (event_x > drag_start_x)
 332                                         drag_rect->property_x2() = event_x;
 333                                 else
 334                                         drag_rect->property_x1() = event_x;
 335                         }
 336
 337                         if (drag_rect && _mouse_state == SelectRectDragging) {
 338                                 if (event_y > drag_start_y)
 339                                         drag_rect->property_y2() = event_y;
 340                                 else
 341                                         drag_rect->property_y1() = event_y;
 342
 343                                 update_drag_selection(drag_start_x, event_x, drag_start_y, event_y);
 344                         }
 345
 346                         last_x = event_x;
 347                         last_y = event_y;
 348
 349                 case SelectTouchDragging:
 350                         return false;
 351
 352                 default:
 353                         break;
 354                 }
 355                 break;
 356
 357         case GDK_BUTTON_RELEASE:
 358                 event_x = ev->motion.x;
 359                 event_y = ev->motion.y;
 360                 group->w2i(event_x, event_y);
 361                 group->ungrab(ev->button.time);
 362                 event_frame = trackview.editor().pixel_to_frame(event_x);
 363
 364                 if (_pressed_button != 1) {
 365                         return false;
 366                 }
 367
 368                 switch (_mouse_state) {
 369                 case Pressed: // Clicked
 370                         switch (editor.current_mouse_mode()) {
 371                         case MouseRange:
 372                         case MouseTimeFX:
 373                                 clear_selection();
 374                                 break;
 375                         case MouseObject:
 376                                 create_note_at(event_x, event_y, _default_note_length);
 377                         default: break;
 378                         }
 379                         _mouse_state = None;
 380                         break;
 381                 case SelectRectDragging: // Select drag done
 382                         _mouse_state = None;
 383                         delete drag_rect;
 384                         drag_rect = NULL;
 385                         break;
 386                 case AddDragging: // Add drag done
 387                         _mouse_state = None;
 388                         if (drag_rect->property_x2() > drag_rect->property_x1() + 2) {
 389                                 const double x      = drag_rect->property_x1();
 390                                 const double length = trackview.editor().pixel_to_frame(
 391                                                         drag_rect->property_x2() - drag_rect->property_x1());
 392
 393                                 create_note_at(x, drag_rect->property_y1(), frames_to_beats(length));
 394                         }
 395
 396                         delete drag_rect;
 397                         drag_rect = NULL;
 398                 default: break;
 399                 }
 400
 401         default: break;
 402         }
 403
 404         return false;
 405 }
 406
 407
 408 /** Add a note to the model, and the view, at a canvas (click) coordinate.
 409  * \param x horizontal position in pixels
 410  * \param y vertical position in pixels
 411  * \param length duration of the note in beats */
 412 void
 413 MidiRegionView::create_note_at(double x, double y, double length)
 414 {
 415         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 416         MidiStreamView* const view = mtv->midi_view();
 417
 418         double note = midi_stream_view()->y_to_note(y);
 419
 420         assert(note >= 0.0);
 421         assert(note <= 127.0);
 422
 423         // Start of note in frames relative to region start
 424         nframes64_t start_frames = snap_frame_to_frame(trackview.editor().pixel_to_frame(x));
 425         assert(start_frames >= 0);
 426
 427         // Snap length
 428         length = frames_to_beats(
 429                         snap_frame_to_frame(start_frames + beats_to_frames(length)) - start_frames);
 430
 431         const boost::shared_ptr<NoteType> new_note(new NoteType(0,
 432                         frames_to_beats(start_frames + _region->start()), length,
 433                         (uint8_t)note, 0x40));
 434
 435         view->update_note_range(new_note->note());
 436
 437         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 438         cmd->add(new_note);
 439         _model->apply_command(trackview.session(), cmd);
 440 }
 441
 442
 443 void
 444 MidiRegionView::clear_events()
 445 {
 446         clear_selection();
 447
 448         MidiGhostRegion* gr;
 449         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 450                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 451                         gr->clear_events();
 452                 }
 453         }
 454
 455         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 456                 delete *i;
 457         }
 458
 459         _events.clear();
 460         _pgm_changes.clear();
 461         _sys_exes.clear();
 462 }
 463
 464
 465 void
 466 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 467 {
 468         _model = model;
 469         if (_enable_display) {
 470                 redisplay_model();
 471         }
 472 }
 473
 474
 475 void
 476 MidiRegionView::start_delta_command(string name)
 477 {
 478         if (!_delta_command) {
 479                 _delta_command = _model->new_delta_command(name);
 480         }
 481 }
 482
 483 void
 484 MidiRegionView::command_add_note(const boost::shared_ptr<NoteType> note, bool selected, bool show_velocity)
 485 {
 486         if (_delta_command) {
 487                 _delta_command->add(note);
 488         }
 489         if (selected) {
 490                 _marked_for_selection.insert(note);
 491         }
 492         if (show_velocity) {
 493                 _marked_for_velocity.insert(note);
 494         }
 495 }
 496
 497 void
 498 MidiRegionView::command_remove_note(ArdourCanvas::CanvasNoteEvent* ev)
 499 {
 500         if (_delta_command && ev->note()) {
 501                 _delta_command->remove(ev->note());
 502         }
 503 }
 504
 505 void
 506 MidiRegionView::apply_command()
 507 {
 508         if (!_delta_command) {
 509                 return;
 510         }
 511
 512         // Mark all selected notes for selection when model reloads
 513         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 514                 _marked_for_selection.insert((*i)->note());
 515         }
 516
 517         _model->apply_command(trackview.session(), _delta_command);
 518         _delta_command = NULL;
 519         midi_view()->midi_track()->diskstream()->playlist_modified();
 520
 521         _marked_for_selection.clear();
 522         _marked_for_velocity.clear();
 523 }
 524
 525
 526 void
 527 MidiRegionView::abort_command()
 528 {
 529         delete _delta_command;
 530         _delta_command = NULL;
 531         clear_selection();
 532 }
 533
 534
 535 void
 536 MidiRegionView::redisplay_model()
 537 {
 538         // Don't redisplay the model if we're currently recording and displaying that
 539         if (_active_notes) {
 540                 return;
 541         }
 542
 543         if (_model) {
 544                 clear_events();
 545                 _model->read_lock();
 546
 547                 MidiModel::Notes notes = _model->notes();
 548
 549                 for (size_t i = 0; i < _model->n_notes(); ++i) {
 550                         add_note(_model->note_at(i));
 551                 }
 552
 553                 display_sysexes();
 554
 555                 display_program_changes();
 556
 557                 _model->read_unlock();
 558
 559         } else {
 560                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
 561         }
 562 }
 563
 564 void
 565 MidiRegionView::display_program_changes()
 566 {
 567         boost::shared_ptr<Evoral::Control> control = _model->control(MidiPgmChangeAutomation);
 568         if (!control) {
 569                 return;
 570         }
 571
 572         Glib::Mutex::Lock lock (control->list()->lock());
 573
 574         uint8_t channel = control->parameter().channel();
 575
 576         for (AutomationList::const_iterator event = control->list()->begin();
 577                         event != control->list()->end(); ++event) {
 578                 double event_time     = (*event)->when;
 579                 double program_number = floor((*event)->value + 0.5);
 580
 581                 // Get current value of bank select MSB at time of the program change
 582                 Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
 583                 boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
 584                 uint8_t msb = 0;
 585                 if (msb_control != 0) {
 586                         msb = uint8_t(floor(msb_control->get_float(true, event_time) + 0.5));
 587                 }
 588
 589                 // Get current value of bank select LSB at time of the program change
 590                 Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
 591                 boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
 592                 uint8_t lsb = 0;
 593                 if (lsb_control != 0) {
 594                         lsb = uint8_t(floor(lsb_control->get_float(true, event_time) + 0.5));
 595                 }
 596
 597                 MIDI::Name::PatchPrimaryKey patch_key(msb, lsb, program_number);
 598
 599                 boost::shared_ptr<MIDI::Name::Patch> patch =
 600                         MIDI::Name::MidiPatchManager::instance().find_patch(
 601                                         _model_name, _custom_device_mode, channel, patch_key);
 602
 603                 PCEvent program_change(event_time, uint8_t(program_number), channel);
 604
 605                 if (patch != 0) {
 606                         add_pgm_change(program_change, patch->name());
 607                 } else {
 608                         char buf[4];
 609                         snprintf(buf, 4, "%d", int(program_number));
 610                         add_pgm_change(program_change, buf);
 611                 }
 612         }
 613 }
 614
 615 void
 616 MidiRegionView::display_sysexes()
 617 {
 618         for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
 619                 ARDOUR::MidiModel::TimeType time = (*i)->time();
 620                 assert(time >= 0);
 621
 622                 ostringstream str;
 623                 str << hex;
 624                 for (uint32_t b = 0; b < (*i)->size(); ++b) {
 625                         str << int((*i)->buffer()[b]);
 626                         if (b != (*i)->size() -1) {
 627                                 str << " ";
 628                         }
 629                 }
 630                 string text = str.str();
 631
 632                 ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 633                 const double x = trackview.editor().frame_to_pixel(beats_to_frames(time));
 634
 635                 double height = midi_stream_view()->contents_height();
 636
 637                 boost::shared_ptr<CanvasSysEx> sysex = boost::shared_ptr<CanvasSysEx>(
 638                                 new CanvasSysEx(*this, *group, text, height, x, 1.0));
 639
 640                 // Show unless program change is beyond the region bounds
 641                 if (time - _region->start() >= _region->length() || time < _region->start()) {
 642                         sysex->hide();
 643                 } else {
 644                         sysex->show();
 645                 }
 646
 647                 _sys_exes.push_back(sysex);
 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         _cut_buffer.clear ();
 664         clear_events();
 665         delete _note_group;
 666         delete _delta_command;
 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                 set_duration(_region->length(), 0);
 676                 if (_enable_display) {
 677                         redisplay_model();
 678                 }
 679         }
 680 }
 681
 682 void
 683 MidiRegionView::reset_width_dependent_items (double pixel_width)
 684 {
 685         RegionView::reset_width_dependent_items(pixel_width);
 686         assert(_pixel_width == pixel_width);
 687
 688         if (_enable_display) {
 689                 redisplay_model();
 690         }
 691 }
 692
 693 void
 694 MidiRegionView::set_height (double height)
 695 {
 696         static const double FUDGE = 2.0;
 697         const double old_height = _height;
 698         RegionView::set_height(height);
 699         _height = height - FUDGE;
 700
 701         apply_note_range(midi_stream_view()->lowest_note(),
 702                          midi_stream_view()->highest_note(),
 703                          height != old_height + FUDGE);
 704
 705         if (name_pixbuf) {
 706                 name_pixbuf->raise_to_top();
 707         }
 708 }
 709
 710
 711 /** Apply the current note range from the stream view
 712  * by repositioning/hiding notes as necessary
 713  */
 714 void
 715 MidiRegionView::apply_note_range (uint8_t min, uint8_t max, bool force)
 716 {
 717         if (!_enable_display) {
 718                 return;
 719         }
 720
 721         if (!force && _current_range_min == min && _current_range_max == max) {
 722                 return;
 723         }
 724
 725         _current_range_min = min;
 726         _current_range_max = max;
 727
 728         for (Events::const_iterator i = _events.begin(); i != _events.end(); ++i) {
 729                 CanvasNoteEvent* event = *i;
 730                 Item* item = dynamic_cast<Item*>(event);
 731                 assert(item);
 732                 if (event && event->note()) {
 733                         if (event->note()->note() < _current_range_min
 734                                         || event->note()->note() > _current_range_max) {
 735                                 if (canvas_item_visible(item)) {
 736                                         item->hide();
 737                                 }
 738                         } else {
 739                                 if (!canvas_item_visible(item)) {
 740                                         item->show();
 741                                 }
 742
 743                                 if (CanvasNote* note = dynamic_cast<CanvasNote*>(event)) {
 744                                         const double y1 = midi_stream_view()->note_to_y(event->note()->note());
 745                                         const double y2 = y1 + floor(midi_stream_view()->note_height());
 746
 747                                         note->property_y1() = y1;
 748                                         note->property_y2() = y2;
 749                                 } else if (CanvasHit* hit = dynamic_cast<CanvasHit*>(event)) {
 750                                         double x = trackview.editor().frame_to_pixel(
 751                                                         beats_to_frames(event->note()->time()) - _region->start());
 752                                         const double diamond_size = midi_stream_view()->note_height() / 2.0;
 753                                         double y = midi_stream_view()->note_to_y(event->note()->note())
 754                                                          + ((diamond_size-2.0) / 4.0);
 755
 756                                         hit->set_height(diamond_size);
 757                                         hit->move(x-hit->x1(), y-hit->y1());
 758                                         hit->show();
 759                                 }
 760                         }
 761                 }
 762         }
 763
 764 }
 765
 766 GhostRegion*
 767 MidiRegionView::add_ghost (TimeAxisView& tv)
 768 {
 769         CanvasNote* note;
 770
 771         double unit_position = _region->position () / samples_per_unit;
 772         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
 773         MidiGhostRegion* ghost;
 774
 775         if (mtv && mtv->midi_view()) {
 776                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group
 777                    to allow having midi notes on top of note lines and waveforms.
 778                  */
 779                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
 780         } else {
 781                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
 782         }
 783
 784         ghost->set_height ();
 785         ghost->set_duration (_region->length() / samples_per_unit);
 786         ghosts.push_back (ghost);
 787
 788         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
 789                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
 790                         ghost->add_note(note);
 791                 }
 792         }
 793
 794         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 795
 796         return ghost;
 797 }
 798
 799
 800 /** Begin tracking note state for successive calls to add_event
 801  */
 802 void
 803 MidiRegionView::begin_write()
 804 {
 805         assert(!_active_notes);
 806         _active_notes = new CanvasNote*[128];
 807         for (unsigned i=0; i < 128; ++i) {
 808                 _active_notes[i] = NULL;
 809         }
 810 }
 811
 812
 813 /** Destroy note state for add_event
 814  */
 815 void
 816 MidiRegionView::end_write()
 817 {
 818         delete[] _active_notes;
 819         _active_notes = NULL;
 820         _marked_for_selection.clear();
 821         _marked_for_velocity.clear();
 822 }
 823
 824
 825 /** Resolve an active MIDI note (while recording).
 826  */
 827 void
 828 MidiRegionView::resolve_note(uint8_t note, double end_time)
 829 {
 830         if (midi_view()->note_mode() != Sustained) {
 831                 return;
 832         }
 833
 834         if (_active_notes && _active_notes[note]) {
 835                 const nframes64_t end_time_frames = beats_to_frames(end_time);
 836                 _active_notes[note]->property_x2() = trackview.editor().frame_to_pixel(end_time_frames);
 837                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 838                 _active_notes[note] = NULL;
 839         }
 840 }
 841
 842
 843 /** Extend active notes to rightmost edge of region (if length is changed)
 844  */
 845 void
 846 MidiRegionView::extend_active_notes()
 847 {
 848         if (!_active_notes) {
 849                 return;
 850         }
 851
 852         for (unsigned i=0; i < 128; ++i) {
 853                 if (_active_notes[i]) {
 854                         _active_notes[i]->property_x2() = trackview.editor().frame_to_pixel(_region->length());
 855                 }
 856         }
 857 }
 858
 859 void
 860 MidiRegionView::play_midi_note(boost::shared_ptr<NoteType> note)
 861 {
 862         if (!trackview.editor().sound_notes()) {
 863                 return;
 864         }
 865
 866         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
 867         assert(route_ui);
 868
 869         route_ui->midi_track()->write_immediate_event(
 870                         note->on_event().size(), note->on_event().buffer());
 871
 872         const double note_length_beats = (note->off_event().time() - note->on_event().time());
 873         nframes_t note_length_ms = beats_to_frames(note_length_beats)
 874                         * (1000 / (double)route_ui->session().nominal_frame_rate());
 875         Glib::signal_timeout().connect(bind(mem_fun(this, &MidiRegionView::play_midi_note_off), note),
 876                         note_length_ms, G_PRIORITY_DEFAULT);
 877 }
 878
 879 bool
 880 MidiRegionView::play_midi_note_off(boost::shared_ptr<NoteType> note)
 881 {
 882         RouteUI* route_ui = dynamic_cast<RouteUI*> (&trackview);
 883         assert(route_ui);
 884
 885         route_ui->midi_track()->write_immediate_event(
 886                         note->off_event().size(), note->off_event().buffer());
 887
 888         return false;
 889 }
 890
 891 bool
 892 MidiRegionView::note_in_visible_range(const boost::shared_ptr<NoteType> note) const
 893 {
 894         const nframes64_t note_start_frames = beats_to_frames(note->time());
 895         bool outside = (note_start_frames - _region->start() >= _region->length())
 896                         || (note_start_frames < _region->start())
 897                         || (note->note() < midi_stream_view()->lowest_note())
 898                         || (note->note() > midi_stream_view()->highest_note());
 899         return !outside;
 900 }
 901
 902 /** Add a MIDI note to the view (with length).
 903  *
 904  * If in sustained mode, notes with length 0 will be considered active
 905  * notes, and resolve_note should be called when the corresponding note off
 906  * event arrives, to properly display the note.
 907  */
 908 void
 909 MidiRegionView::add_note(const boost::shared_ptr<NoteType> note)
 910 {
 911         assert(note->time() >= 0);
 912         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
 913
 914         const nframes64_t note_start_frames = beats_to_frames(note->time());
 915         const nframes64_t note_end_frames   = beats_to_frames(note->end_time());
 916
 917         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 918
 919         CanvasNoteEvent* event = 0;
 920
 921         const double x = trackview.editor().frame_to_pixel(note_start_frames - _region->start());
 922
 923         if (midi_view()->note_mode() == Sustained) {
 924                 const double y1 = midi_stream_view()->note_to_y(note->note());
 925                 const double note_endpixel =
 926                         trackview.editor().frame_to_pixel(note_end_frames - _region->start());
 927
 928                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
 929                 ev_rect->property_x1() = x;
 930                 ev_rect->property_y1() = y1;
 931                 if (note->length() > 0) {
 932                         ev_rect->property_x2() = note_endpixel;
 933                 } else {
 934                         ev_rect->property_x2() = trackview.editor().frame_to_pixel(_region->length());
 935                 }
 936                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 937
 938                 if (note->length() == 0) {
 939                         if (_active_notes) {
 940                                 assert(note->note() < 128);
 941                                 // If this note is already active there's a stuck note,
 942                                 // finish the old note rectangle
 943                                 if (_active_notes[note->note()]) {
 944                                         CanvasNote* const old_rect = _active_notes[note->note()];
 945                                         boost::shared_ptr<NoteType> old_note = old_rect->note();
 946                                         old_rect->property_x2() = x;
 947                                         old_rect->property_outline_what() = (guint32) 0xF;
 948                                 }
 949                                 _active_notes[note->note()] = ev_rect;
 950                         }
 951                         /* outline all but right edge */
 952                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 953                 } else {
 954                         /* outline all edges */
 955                         ev_rect->property_outline_what() = (guint32) 0xF;
 956                 }
 957
 958                 event = ev_rect;
 959
 960                 MidiGhostRegion* gr;
 961                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 962                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 963                                 gr->add_note(ev_rect);
 964                         }
 965                 }
 966
 967         } else if (midi_view()->note_mode() == Percussive) {
 968                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 969                 const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
 970
 971                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
 972                 ev_diamond->move(x, y);
 973                 event = ev_diamond;
 974         } else {
 975                 event = 0;
 976         }
 977
 978         if (event) {
 979                 if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
 980                         note_selected(event, true);
 981                 }
 982                 if (_marked_for_velocity.find(note) != _marked_for_velocity.end()) {
 983                         event->show_velocity();
 984                 }
 985                 event->on_channel_selection_change(_last_channel_selection);
 986                 _events.push_back(event);
 987                 if (note_in_visible_range(note)) {
 988                         event->show();
 989                 } else {
 990                         event->hide();
 991                 }
 992         }
 993 }
 994
 995 void
 996 MidiRegionView::add_pgm_change(PCEvent& program, const string& displaytext)
 997 {
 998         assert(program.time >= 0);
 999
1000         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
1001         const double x = trackview.editor().frame_to_pixel(beats_to_frames(program.time));
1002
1003         double height = midi_stream_view()->contents_height();
1004
1005         boost::shared_ptr<CanvasProgramChange> pgm_change = boost::shared_ptr<CanvasProgramChange>(
1006                         new CanvasProgramChange(*this, *group,
1007                                         displaytext,
1008                                         height,
1009                                         x, 1.0,
1010                                         _model_name,
1011                                         _custom_device_mode,
1012                                         program.time, program.channel, program.value));
1013
1014         // Show unless program change is beyond the region bounds
1015         if (program.time - _region->start() >= _region->length() || program.time < _region->start()) {
1016                 pgm_change->hide();
1017         } else {
1018                 pgm_change->show();
1019         }
1020
1021         _pgm_changes.push_back(pgm_change);
1022 }
1023
1024 void
1025 MidiRegionView::get_patch_key_at(double time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key)
1026 {
1027         cerr << "getting patch key at " << time << " for channel " << channel << endl;
1028         Evoral::Parameter bank_select_msb(MidiCCAutomation, channel, MIDI_CTL_MSB_BANK);
1029         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1030         float msb = -1.0;
1031         if (msb_control != 0) {
1032                 msb = int(msb_control->get_float(true, time));
1033                 cerr << "got msb " << msb;
1034         }
1035
1036         Evoral::Parameter bank_select_lsb(MidiCCAutomation, channel, MIDI_CTL_LSB_BANK);
1037         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1038         float lsb = -1.0;
1039         if (lsb_control != 0) {
1040                 lsb = lsb_control->get_float(true, time);
1041                 cerr << " got lsb " << lsb;
1042         }
1043
1044         Evoral::Parameter program_change(MidiPgmChangeAutomation, channel, 0);
1045         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1046         float program_number = -1.0;
1047         if (program_control != 0) {
1048                 program_number = program_control->get_float(true, time);
1049                 cerr << " got program " << program_number << endl;
1050         }
1051
1052         key.msb = (int) floor(msb + 0.5);
1053         key.lsb = (int) floor(lsb + 0.5);
1054         key.program_number = (int) floor(program_number + 0.5);
1055         assert(key.is_sane());
1056 }
1057
1058
1059 void
1060 MidiRegionView::alter_program_change(PCEvent& old_program, const MIDI::Name::PatchPrimaryKey& new_patch)
1061 {
1062         // TODO: Get the real event here and alter them at the original times
1063         Evoral::Parameter bank_select_msb(MidiCCAutomation, old_program.channel, MIDI_CTL_MSB_BANK);
1064         boost::shared_ptr<Evoral::Control> msb_control = _model->control(bank_select_msb);
1065         if (msb_control != 0) {
1066                 msb_control->set_float(float(new_patch.msb), true, old_program.time);
1067         }
1068
1069         // TODO: Get the real event here and alter them at the original times
1070         Evoral::Parameter bank_select_lsb(MidiCCAutomation, old_program.channel, MIDI_CTL_LSB_BANK);
1071         boost::shared_ptr<Evoral::Control> lsb_control = _model->control(bank_select_lsb);
1072         if (lsb_control != 0) {
1073                 lsb_control->set_float(float(new_patch.lsb), true, old_program.time);
1074         }
1075
1076         Evoral::Parameter program_change(MidiPgmChangeAutomation, old_program.channel, 0);
1077         boost::shared_ptr<Evoral::Control> program_control = _model->control(program_change);
1078
1079         assert(program_control != 0);
1080         program_control->set_float(float(new_patch.program_number), true, old_program.time);
1081
1082         redisplay_model();
1083 }
1084
1085 void
1086 MidiRegionView::program_selected(CanvasProgramChange& program, const MIDI::Name::PatchPrimaryKey& new_patch)
1087 {
1088         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1089         alter_program_change(program_change_event, new_patch);
1090 }
1091
1092 void
1093 MidiRegionView::previous_program(CanvasProgramChange& program)
1094 {
1095         MIDI::Name::PatchPrimaryKey key;
1096         get_patch_key_at(program.event_time(), program.channel(), key);
1097
1098         boost::shared_ptr<MIDI::Name::Patch> patch =
1099                 MIDI::Name::MidiPatchManager::instance().previous_patch(
1100                                 _model_name,
1101                                 _custom_device_mode,
1102                                 program.channel(),
1103                                 key);
1104
1105         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1106         if (patch) {
1107                 alter_program_change(program_change_event, patch->patch_primary_key());
1108         }
1109 }
1110
1111 void
1112 MidiRegionView::next_program(CanvasProgramChange& program)
1113 {
1114         MIDI::Name::PatchPrimaryKey key;
1115         get_patch_key_at(program.event_time(), program.channel(), key);
1116
1117         boost::shared_ptr<MIDI::Name::Patch> patch =
1118                 MIDI::Name::MidiPatchManager::instance().next_patch(
1119                                 _model_name,
1120                                 _custom_device_mode,
1121                                 program.channel(),
1122                                 key);
1123
1124         PCEvent program_change_event(program.event_time(), program.program(), program.channel());
1125         if (patch) {
1126                 alter_program_change(program_change_event, patch->patch_primary_key());
1127         }
1128 }
1129
1130 void
1131 MidiRegionView::delete_selection()
1132 {
1133         if (_selection.empty()) {
1134                 return;
1135         }
1136
1137         if (!_delta_command) {
1138                 _delta_command = _model->new_delta_command("delete selection");
1139         }
1140
1141         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1142                 if ((*i)->selected()) {
1143                         _delta_command->remove((*i)->note());
1144                 }
1145         }
1146
1147         _selection.clear();
1148 }
1149
1150 void
1151 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
1152 {
1153         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1154                 if ((*i)->selected() && (*i) != ev) {
1155                         (*i)->selected(false);
1156                         (*i)->hide_velocity();
1157                 }
1158         }
1159
1160         _selection.clear();
1161 }
1162
1163 void
1164 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
1165 {
1166         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
1167
1168                 Selection::iterator tmp = i;
1169                 ++tmp;
1170
1171                 if ((*i) != ev) {
1172                         remove_from_selection (*i);
1173                 }
1174
1175                 i = tmp;
1176         }
1177
1178         if (!ev->selected()) {
1179                 add_to_selection (ev);
1180         }
1181 }
1182
1183 void
1184 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
1185 {
1186         if (!add) {
1187                 clear_selection_except(ev);
1188         }
1189
1190         if (!ev->selected()) {
1191                 add_to_selection (ev);
1192         }
1193 }
1194
1195
1196 void
1197 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
1198 {
1199         if (!add) {
1200                 clear_selection_except(ev);
1201         }
1202
1203         remove_from_selection (ev);
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                         if ((*i)->x1() >= x1 && (*i)->x1() <= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
1229                                 // Inside rectangle
1230                                 add_to_selection (*i);
1231                         } else if ((*i)->selected()) {
1232                                 // Not inside rectangle
1233                                 remove_from_selection (*i);
1234                         }
1235                 }
1236         } else {
1237                 for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1238 #ifndef NDEBUG
1239                         // Events should always be sorted by increasing x1() here
1240                         assert((*i)->x1() >= last_x1);
1241                         last_x1 = (*i)->x1();
1242 #endif
1243                         if ((*i)->x2() <= x1 && (*i)->x2() >= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
1244                                 // Inside rectangle
1245                                 add_to_selection (*i);
1246                         } else if ((*i)->selected()) {
1247                                 // Not inside rectangle
1248                                 remove_from_selection (*i);
1249                         }
1250                 }
1251         }
1252 }
1253
1254 void
1255 MidiRegionView::remove_from_selection (CanvasNoteEvent* ev)
1256 {
1257         Selection::iterator i = _selection.find (ev);
1258
1259         if (i != _selection.end()) {
1260                 _selection.erase (i);
1261         }
1262
1263         ev->selected (false);
1264         ev->hide_velocity ();
1265
1266         if (_selection.empty()) {
1267                 PublicEditor& editor (trackview.editor());
1268                 editor.get_selection().remove (this);
1269         }
1270 }
1271
1272 void
1273 MidiRegionView::add_to_selection (CanvasNoteEvent* ev)
1274 {
1275         bool add_mrv_selection = false;
1276
1277         if (_selection.empty()) {
1278                 add_mrv_selection = true;
1279         }
1280
1281         if (_selection.insert (ev).second) {
1282                 ev->selected (true);
1283                 play_midi_note ((ev)->note());
1284         }
1285
1286         if (add_mrv_selection) {
1287                 PublicEditor& editor (trackview.editor());
1288                 editor.get_selection().add (this);
1289         }
1290 }
1291
1292 void
1293 MidiRegionView::move_selection(double dx, double dy)
1294 {
1295         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1296                 (*i)->move_event(dx, dy);
1297         }
1298 }
1299
1300 void
1301 MidiRegionView::note_dropped(CanvasNoteEvent* ev, double dt, uint8_t dnote)
1302 {
1303         // TODO: This would be faster/nicer with a MoveCommand that doesn't need to copy...
1304         if (_selection.find(ev) == _selection.end()) {
1305                 return;
1306         }
1307
1308         uint8_t lowest_note_in_selection  = midi_stream_view()->lowest_note();
1309         uint8_t highest_note_in_selection = midi_stream_view()->highest_note();
1310         uint8_t highest_note_difference = 0;
1311
1312         // find highest and lowest notes first
1313         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1314                 uint8_t pitch = (*i)->note()->note();
1315                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
1316                 highest_note_in_selection = std::max(highest_note_in_selection, pitch);
1317         }
1318
1319         /*
1320         cerr << "dnote: " << (int) dnote << endl;
1321         cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
1322              << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
1323         cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
1324              << int(highest_note_in_selection) << endl;
1325         cerr << "selection size: " << _selection.size() << endl;
1326         cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
1327         */
1328
1329         // Make sure the note pitch does not exceed the MIDI standard range
1330         if (dnote <= 127 && (highest_note_in_selection + dnote > 127)) {
1331                 highest_note_difference = highest_note_in_selection - 127;
1332         }
1333
1334         start_delta_command(_("move notes"));
1335
1336         for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ) {
1337                 Selection::iterator next = i;
1338                 ++next;
1339
1340                 const boost::shared_ptr<NoteType> copy(new NoteType(*(*i)->note().get()));
1341
1342                 nframes64_t start_frames = beats_to_frames((*i)->note()->time());
1343                 if (dt >= 0) {
1344                         start_frames += snap_frame_to_frame(trackview.editor().pixel_to_frame(dt));
1345                 } else {
1346                         start_frames -= snap_frame_to_frame(trackview.editor().pixel_to_frame(-dt));
1347                 }
1348
1349                 copy->set_time(frames_to_beats(start_frames));
1350
1351                 uint8_t original_pitch = (*i)->note()->note();
1352                 uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
1353
1354                 // keep notes in standard midi range
1355                 clamp_to_0_127(new_pitch);
1356
1357                 // keep original pitch if note is dragged outside valid midi range
1358                 if ((original_pitch != 0 && new_pitch == 0)
1359                                 || (original_pitch != 127 && new_pitch == 127)) {
1360                         new_pitch = original_pitch;
1361                 }
1362
1363                 lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
1364                 highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
1365
1366                 copy->set_note(new_pitch);
1367
1368                 command_remove_note(*i);
1369                 command_add_note(copy, (*i)->selected());
1370
1371                 i = next;
1372         }
1373
1374         apply_command();
1375
1376         // care about notes being moved beyond the upper/lower bounds on the canvas
1377         if (lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
1378                         highest_note_in_selection > midi_stream_view()->highest_note()) {
1379                 midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
1380         }
1381 }
1382
1383 nframes64_t
1384 MidiRegionView::snap_pixel_to_frame(double x)
1385 {
1386         PublicEditor& editor = trackview.editor();
1387         // x is region relative, convert it to global absolute frames
1388         nframes64_t frame = editor.pixel_to_frame(x) + _region->position();
1389         editor.snap_to(frame);
1390         return frame - _region->position(); // convert back to region relative
1391 }
1392
1393 nframes64_t
1394 MidiRegionView::snap_frame_to_frame(nframes64_t x)
1395 {
1396         PublicEditor& editor = trackview.editor();
1397         // x is region relative, convert it to global absolute frames
1398         nframes64_t frame = x + _region->position();
1399         editor.snap_to(frame);
1400         return frame - _region->position(); // convert back to region relative
1401 }
1402
1403 double
1404 MidiRegionView::snap_to_pixel(double x)
1405 {
1406         return (double) trackview.editor().frame_to_pixel(snap_pixel_to_frame(x));
1407 }
1408
1409 double
1410 MidiRegionView::get_position_pixels()
1411 {
1412         nframes64_t region_frame = get_position();
1413         return trackview.editor().frame_to_pixel(region_frame);
1414 }
1415
1416 nframes64_t
1417 MidiRegionView::beats_to_frames(double beats) const
1418 {
1419         return _time_converter.to(beats);
1420 }
1421
1422 double
1423 MidiRegionView::frames_to_beats(nframes64_t frames) const
1424 {
1425         return _time_converter.from(frames);
1426 }
1427
1428 void
1429 MidiRegionView::begin_resizing(CanvasNote::NoteEnd note_end)
1430 {
1431         _resize_data.clear();
1432
1433         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1434                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
1435
1436                 // only insert CanvasNotes into the map
1437                 if (note) {
1438                         NoteResizeData *resize_data = new NoteResizeData();
1439                         resize_data->canvas_note = note;
1440
1441                         // create a new SimpleRect from the note which will be the resize preview
1442                         SimpleRect *resize_rect = new SimpleRect(
1443                                         *group, note->x1(), note->y1(), note->x2(), note->y2());
1444
1445                         // calculate the colors: get the color settings
1446                         uint32_t fill_color = UINT_RGBA_CHANGE_A(
1447                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get(),
1448                                         128);
1449
1450                         // make the resize preview notes more transparent and bright
1451                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
1452
1453                         // calculate color based on note velocity
1454                         resize_rect->property_fill_color_rgba() = UINT_INTERPOLATE(
1455                                         CanvasNoteEvent::meter_style_fill_color(note->note()->velocity()),
1456                                         fill_color,
1457                                         0.85);
1458
1459                         resize_rect->property_outline_color_rgba() = CanvasNoteEvent::calculate_outline(
1460                                         ARDOUR_UI::config()->canvasvar_MidiNoteSelected.get());
1461
1462                         resize_data->resize_rect = resize_rect;
1463
1464                         if (note_end == CanvasNote::NOTE_ON) {
1465                                 resize_data->current_x = note->x1();
1466                         } else { // NOTE_OFF
1467                                 resize_data->current_x = note->x2();
1468                         }
1469
1470                         _resize_data.push_back(resize_data);
1471                 }
1472         }
1473 }
1474
1475 void
1476 MidiRegionView::update_resizing(CanvasNote::NoteEnd note_end, double x, bool relative)
1477 {
1478         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1479                 SimpleRect* resize_rect = (*i)->resize_rect;
1480                 CanvasNote* canvas_note = (*i)->canvas_note;
1481
1482                 const double region_start = get_position_pixels();
1483
1484                 if (relative) {
1485                         (*i)->current_x = (*i)->current_x + x;
1486                 } else {
1487                         // x is in track relative, transform it to region relative
1488                         (*i)->current_x = x - region_start;
1489                 }
1490
1491                 double current_x = (*i)->current_x;
1492
1493                 if (note_end == CanvasNote::NOTE_ON) {
1494                         resize_rect->property_x1() = snap_to_pixel(current_x);
1495                         resize_rect->property_x2() = canvas_note->x2();
1496                 } else {
1497                         resize_rect->property_x2() = snap_to_pixel(current_x);
1498                         resize_rect->property_x1() = canvas_note->x1();
1499                 }
1500         }
1501 }
1502
1503 void
1504 MidiRegionView::commit_resizing(CanvasNote::NoteEnd note_end, double event_x, bool relative)
1505 {
1506         start_delta_command(_("resize notes"));
1507
1508         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1509                 CanvasNote*  canvas_note = (*i)->canvas_note;
1510                 SimpleRect*  resize_rect = (*i)->resize_rect;
1511                 double       current_x   = (*i)->current_x;
1512                 const double position    = get_position_pixels();
1513
1514                 if (!relative) {
1515                         // event_x is in track relative, transform it to region relative
1516                         current_x = event_x - position;
1517                 }
1518
1519                 // because snapping works on world coordinates we have to transform current_x
1520                 // to world coordinates before snapping and transform it back afterwards
1521                 nframes64_t current_frame = snap_pixel_to_frame(current_x);
1522                 // transform to region start relative
1523                 current_frame += _region->start();
1524
1525                 const boost::shared_ptr<NoteType> copy(new NoteType(*(canvas_note->note().get())));
1526
1527                 // resize beginning of note
1528                 if (note_end == CanvasNote::NOTE_ON && current_frame < copy->end_time()) {
1529                         command_remove_note(canvas_note);
1530                         copy->on_event().time() = current_frame;
1531                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1532                 }
1533                 // resize end of note
1534                 if (note_end == CanvasNote::NOTE_OFF && current_frame > copy->time()) {
1535                         command_remove_note(canvas_note);
1536                         copy->off_event().time() = current_frame;
1537                         command_add_note(copy, _selection.find(canvas_note) != _selection.end());
1538                 }
1539
1540                 delete resize_rect;
1541                 delete (*i);
1542         }
1543
1544         _resize_data.clear();
1545         apply_command();
1546 }
1547
1548 void
1549 MidiRegionView::change_note_velocity(CanvasNoteEvent* event, int8_t velocity, bool relative)
1550 {
1551         const boost::shared_ptr<NoteType> copy(new NoteType(*(event->note().get())));
1552
1553         if (relative) {
1554                 uint8_t new_velocity = copy->velocity() + velocity;
1555                 clamp_to_0_127(new_velocity);
1556                 copy->set_velocity(new_velocity);
1557         } else {
1558                 copy->set_velocity(velocity);
1559         }
1560
1561         command_remove_note(event);
1562         command_add_note(copy, event->selected(), true);
1563 }
1564
1565 void
1566 MidiRegionView::change_velocity(CanvasNoteEvent* ev, int8_t velocity, bool relative)
1567 {
1568         start_delta_command(_("change velocity"));
1569
1570         change_note_velocity(ev, velocity, relative);
1571
1572         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1573                 Selection::iterator next = i;
1574                 ++next;
1575                 if ( !(*((*i)->note()) == *(ev->note())) ) {
1576                         change_note_velocity(*i, velocity, relative);
1577                 }
1578                 i = next;
1579         }
1580
1581         apply_command();
1582 }
1583
1584 void
1585 MidiRegionView::change_channel(uint8_t channel)
1586 {
1587         start_delta_command(_("change channel"));
1588         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1589                 Selection::iterator next = i;
1590                 ++next;
1591
1592                 CanvasNoteEvent* event = *i;
1593                 const boost::shared_ptr<NoteType> copy(new NoteType(*(event->note().get())));
1594
1595                 copy->set_channel(channel);
1596
1597                 command_remove_note(event);
1598                 command_add_note(copy, event->selected());
1599
1600                 i = next;
1601         }
1602
1603         apply_command();
1604 }
1605
1606
1607 void
1608 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
1609 {
1610         if (_mouse_state == SelectTouchDragging) {
1611                 note_selected(ev, true);
1612         }
1613 }
1614
1615
1616 void
1617 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
1618 {
1619         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
1620         if (msrc)
1621                 display_model(msrc->model());
1622 }
1623
1624 void
1625 MidiRegionView::set_frame_color()
1626 {
1627         if (frame) {
1628                 if (_selected && should_show_selection) {
1629                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
1630                 } else {
1631                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
1632                 }
1633         }
1634 }
1635
1636 void
1637 MidiRegionView::midi_channel_mode_changed(ChannelMode mode, uint16_t mask)
1638 {
1639         switch (mode) {
1640         case AllChannels:
1641         case FilterChannels:
1642                 _force_channel = -1;
1643                 break;
1644         case ForceChannel:
1645                 _force_channel = mask;
1646                 mask = 0xFFFF; // Show all notes as active (below)
1647         };
1648
1649         // Update notes for selection
1650         for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
1651                 (*i)->on_channel_selection_change(mask);
1652         }
1653
1654         _last_channel_selection = mask;
1655 }
1656
1657 void
1658 MidiRegionView::midi_patch_settings_changed(std::string model, std::string custom_device_mode)
1659 {
1660         _model_name         = model;
1661         _custom_device_mode = custom_device_mode;
1662         redisplay_model();
1663 }
1664
1665 void
1666 MidiRegionView::cut_copy_clear (Editing::CutCopyOp op)
1667 {
1668         if (_selection.empty()) {
1669                 return;
1670         }
1671
1672         _cut_buffer.clear ();
1673
1674         start_delta_command();
1675
1676         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1677                 switch (op) {
1678                 case Copy:
1679                         _cut_buffer.push_back (NoteType (*((*i)->note().get())));
1680                         break;
1681                 case Cut:
1682                         _cut_buffer.push_back (NoteType (*(*i)->note().get()));
1683                         command_remove_note (*i);
1684                         break;
1685                 case Clear:
1686                         break;
1687                 }
1688         }
1689
1690         apply_command();
1691 }
1692