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