gtk2_ardour/piano_roll_header.cc

   1 /*
   2     Copyright (C) 2008 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17 */
  18
  19 #include <iostream>
  20 #include "evoral/midi_events.h"
  21 #include "ardour/midi_track.h"
  22
  23 #include "gtkmm2ext/keyboard.h"
  24
  25 #include "editing.h"
  26 #include "piano_roll_header.h"
  27 #include "midi_time_axis.h"
  28 #include "midi_streamview.h"
  29 #include "public_editor.h"
  30 #include "ui_config.h"
  31
  32 using namespace std;
  33 using namespace Gtkmm2ext;
  34
  35 PianoRollHeader::Color PianoRollHeader::white = PianoRollHeader::Color(0.77f, 0.78f, 0.76f);
  36 PianoRollHeader::Color PianoRollHeader::white_highlight = PianoRollHeader::Color(1.00f, 0.40f, 0.40f);
  37 PianoRollHeader::Color PianoRollHeader::white_shade_light = PianoRollHeader::Color(0.95f, 0.95f, 0.95f);
  38 PianoRollHeader::Color PianoRollHeader::white_shade_dark = PianoRollHeader::Color(0.56f, 0.56f, 0.56f);
  39
  40 PianoRollHeader::Color PianoRollHeader::black = PianoRollHeader::Color(0.24f, 0.24f, 0.24f);
  41 PianoRollHeader::Color PianoRollHeader::black_highlight = PianoRollHeader::Color(0.60f, 0.10f, 0.10f);
  42 PianoRollHeader::Color PianoRollHeader::black_shade_light = PianoRollHeader::Color(0.46f, 0.46f, 0.46f);
  43 PianoRollHeader::Color PianoRollHeader::black_shade_dark = PianoRollHeader::Color(0.1f, 0.1f, 0.1f);
  44
  45 PianoRollHeader::Color::Color()
  46         : r(1.0f)
  47         , g(1.0f)
  48         , b(1.0f)
  49 {
  50 }
  51
  52 PianoRollHeader::Color::Color(double _r, double _g, double _b)
  53         : r(_r)
  54         , g(_g)
  55         , b(_b)
  56 {
  57 }
  58
  59 inline void
  60 PianoRollHeader::Color::set(const PianoRollHeader::Color& c)
  61 {
  62         r = c.r;
  63         g = c.g;
  64         b = c.b;
  65 }
  66
  67 PianoRollHeader::PianoRollHeader(MidiStreamView& v)
  68         : _view(v)
  69         , _highlighted_note(NO_MIDI_NOTE)
  70         , _clicked_note(NO_MIDI_NOTE)
  71         , _dragging(false)
  72 {
  73         add_events (Gdk::BUTTON_PRESS_MASK |
  74                     Gdk::BUTTON_RELEASE_MASK |
  75                     Gdk::POINTER_MOTION_MASK |
  76                     Gdk::ENTER_NOTIFY_MASK |
  77                     Gdk::LEAVE_NOTIFY_MASK |
  78                     Gdk::SCROLL_MASK);
  79
  80         for (int i = 0; i < 128; ++i) {
  81                 _active_notes[i] = false;
  82         }
  83
  84         _view.NoteRangeChanged.connect (sigc::mem_fun (*this, &PianoRollHeader::note_range_changed));
  85 }
  86
  87 inline void
  88 create_path(Cairo::RefPtr<Cairo::Context> cr, double x[], double y[], int start, int stop)
  89 {
  90         cr->move_to(x[start], y[start]);
  91
  92         for (int i = start+1; i <= stop; ++i) {
  93                 cr->line_to(x[i], y[i]);
  94         }
  95 }
  96
  97 inline void
  98 render_rect(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
  99              PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
 100 {
 101         cr->set_source_rgb(bg.r, bg.g, bg.b);
 102         create_path(cr, x, y, 0, 4);
 103         cr->fill();
 104
 105         cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
 106         create_path(cr, x, y, 0, 2);
 107         cr->stroke();
 108
 109         cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
 110         create_path(cr, x, y, 2, 4);
 111         cr->stroke();
 112 }
 113
 114 inline void
 115 render_cf(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
 116                 PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
 117 {
 118         cr->set_source_rgb(bg.r, bg.g, bg.b);
 119         create_path(cr, x, y, 0, 6);
 120         cr->fill();
 121
 122         cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
 123         create_path(cr, x, y, 0, 4);
 124         cr->stroke();
 125
 126         cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
 127         create_path(cr, x, y, 4, 6);
 128         cr->stroke();
 129 }
 130
 131 inline void
 132 render_eb(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
 133                 PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
 134 {
 135         cr->set_source_rgb(bg.r, bg.g, bg.b);
 136         create_path(cr, x, y, 0, 6);
 137         cr->fill();
 138
 139         cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
 140         create_path(cr, x, y, 0, 2);
 141         cr->stroke();
 142         create_path(cr, x, y, 4, 5);
 143         cr->stroke();
 144
 145         cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
 146         create_path(cr, x, y, 2, 4);
 147         cr->stroke();
 148         create_path(cr, x, y, 5, 6);
 149         cr->stroke();
 150 }
 151
 152 inline void
 153 render_dga(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
 154                  PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
 155 {
 156         cr->set_source_rgb(bg.r, bg.g, bg.b);
 157         create_path(cr, x, y, 0, 8);
 158         cr->fill();
 159
 160         cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
 161         create_path(cr, x, y, 0, 4);
 162         cr->stroke();
 163         create_path(cr, x, y, 6, 7);
 164         cr->stroke();
 165
 166         cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
 167         create_path(cr, x, y, 4, 6);
 168         cr->stroke();
 169         create_path(cr, x, y, 7, 8);
 170         cr->stroke();
 171 }
 172
 173 void
 174 PianoRollHeader::get_path(PianoRollHeader::ItemType note_type, int note, double x[], double y[])
 175 {
 176         double y_pos = floor(_view.note_to_y(note)) + 1.5f;
 177         double note_height;
 178         double other_y1 = floor(_view.note_to_y(note+1)) + floor(_note_height / 2.0f) + 2.5f;
 179         double other_y2 = floor(_view.note_to_y(note-1)) + floor(_note_height / 2.0f) + 1.0f;
 180         double width = get_width();
 181
 182         if (note == 0) {
 183                 note_height = floor(_view.contents_height()) - y_pos + 2.;
 184         } else {
 185                 note_height = floor(_view.note_to_y(note - 1)) - y_pos + 2.;
 186         }
 187
 188         switch (note_type) {
 189         case BLACK_SEPARATOR:
 190                 x[0] = 1.5f;
 191                 y[0] = y_pos;
 192                 x[1] = _black_note_width;
 193                 y[1] = y_pos;
 194                 break;
 195         case BLACK_MIDDLE_SEPARATOR:
 196                 x[0] = _black_note_width;
 197                 y[0] = y_pos + floor(_note_height / 2.0f);
 198                 x[1] = width - 1.0f;
 199                 y[1] = y[0];
 200                 break;
 201         case BLACK:
 202                 x[0] = 1.5f;
 203                 y[0] = y_pos + note_height - 0.5f;
 204                 x[1] = 1.5f;
 205                 y[1] = y_pos + 1.0f;
 206                 x[2] = _black_note_width;
 207                 y[2] = y_pos + 1.0f;
 208                 x[3] = _black_note_width;
 209                 y[3] = y_pos + note_height - 0.5f;
 210                 x[4] = 1.5f;
 211                 y[4] = y_pos + note_height - 0.5f;
 212                 return;
 213         case WHITE_SEPARATOR:
 214                 x[0] = 1.5f;
 215                 y[0] = y_pos;
 216                 x[1] = width - 1.5f;
 217                 y[1] = y_pos;
 218                 break;
 219         case WHITE_RECT:
 220                 x[0] = 1.5f;
 221                 y[0] = y_pos + note_height - 0.5f;
 222                 x[1] = 1.5f;
 223                 y[1] = y_pos + 1.0f;
 224                 x[2] = width - 1.5f;
 225                 y[2] = y_pos + 1.0f;
 226                 x[3] = width - 1.5f;
 227                 y[3] = y_pos + note_height - 0.5f;
 228                 x[4] = 1.5f;
 229                 y[4] = y_pos + note_height - 0.5f;
 230                 return;
 231         case WHITE_CF:
 232                 x[0] = 1.5f;
 233                 y[0] = y_pos + note_height - 1.5f;
 234                 x[1] = 1.5f;
 235                 y[1] = y_pos + 1.0f;
 236                 x[2] = _black_note_width + 1.0f;
 237                 y[2] = y_pos + 1.0f;
 238                 x[3] = _black_note_width + 1.0f;
 239                 y[3] = other_y1;
 240                 x[4] = width - 1.5f;
 241                 y[4] = other_y1;
 242                 x[5] = width - 1.5f;
 243                 y[5] = y_pos + note_height - 1.5f;
 244                 x[6] = 1.5f;
 245                 y[6] = y_pos + note_height - 1.5f;
 246                 return;
 247         case WHITE_EB:
 248                 x[0] = 1.5f;
 249                 y[0] = y_pos + note_height - 1.5f;
 250                 x[1] = 1.5f;
 251                 y[1] = y_pos + 1.0f;
 252                 x[2] = width - 1.5f;
 253                 y[2] = y_pos + 1.0f;
 254                 x[3] = width - 1.5f;
 255                 y[3] = other_y2;
 256                 x[4] = _black_note_width + 1.0f;
 257                 y[4] = other_y2;
 258                 x[5] = _black_note_width + 1.0f;
 259                 y[5] = y_pos + note_height - 1.5f;
 260                 x[6] = 1.5f;
 261                 y[6] = y_pos + note_height - 1.5f;
 262                 return;
 263         case WHITE_DGA:
 264                 x[0] = 1.5f;
 265                 y[0] = y_pos + note_height - 1.5f;
 266                 x[1] = 1.5f;
 267                 y[1] = y_pos + 1.0f;
 268                 x[2] = _black_note_width + 1.0f;
 269                 y[2] = y_pos + 1.0f;
 270                 x[3] = _black_note_width + 1.0f;
 271                 y[3] = other_y1;
 272                 x[4] = width - 1.5f;
 273                 y[4] = other_y1;
 274                 x[5] = width - 1.5f;
 275                 y[5] = other_y2;
 276                 x[6] = _black_note_width + 1.0f;
 277                 y[6] = other_y2;
 278                 x[7] = _black_note_width + 1.0f;
 279                 y[7] = y_pos + note_height - 1.5f;
 280                 x[8] = 1.5f;
 281                 y[8] = y_pos + note_height - 1.5f;
 282                 return;
 283         default:
 284                 return;
 285         }
 286 }
 287
 288 bool
 289 PianoRollHeader::on_expose_event (GdkEventExpose* ev)
 290 {
 291         GdkRectangle& rect = ev->area;
 292         double font_size;
 293         int lowest, highest;
 294         Cairo::RefPtr<Cairo::Context> cr = get_window()->create_cairo_context();
 295         Cairo::RefPtr<Cairo::LinearGradient> pat = Cairo::LinearGradient::create(0, 0, _black_note_width, 0);
 296         double x[9];
 297         double y[9];
 298         Color bg, tl_shadow, br_shadow;
 299         int oct_rel;
 300         int y1 = max(rect.y, 0);
 301         int y2 = min(rect.y + rect.height, (int) floor(_view.contents_height() - 1.0f));
 302
 303         //Cairo::TextExtents te;
 304         lowest = max(_view.lowest_note(), _view.y_to_note(y2));
 305         highest = min(_view.highest_note(), _view.y_to_note(y1));
 306
 307         if (lowest > 127) {
 308                 lowest = 0;
 309         }
 310
 311         cr->select_font_face ("Georgia", Cairo::FONT_SLANT_NORMAL, Cairo::FONT_WEIGHT_BOLD);
 312         font_size = min((double) 10.0f, _note_height - 4.0f);
 313         cr->set_font_size(font_size);
 314
 315         /* fill the entire rect with the color for non-highlighted white notes.
 316          * then we won't have to draw the background for those notes,
 317          * and would only have to draw the background for the one highlighted white note*/
 318         //cr->rectangle(rect.x, rect.y, rect.width, rect.height);
 319         //cr->set_source_rgb(white.r, white.g, white.b);
 320         //cr->fill();
 321
 322         cr->set_line_width(1.0f);
 323
 324         /* draw vertical lines with shade at both ends of the widget */
 325         cr->set_source_rgb(0.0f, 0.0f, 0.0f);
 326         cr->move_to(0.5f, rect.y);
 327         cr->line_to(0.5f, rect.y + rect.height);
 328         cr->stroke();
 329         cr->move_to(get_width() - 0.5f, rect.y);
 330         cr->line_to(get_width() - 0.5f, rect.y + rect.height);
 331         cr->stroke();
 332
 333         //pat->add_color_stop_rgb(0.0, 0.33, 0.33, 0.33);
 334         //pat->add_color_stop_rgb(0.2, 0.39, 0.39, 0.39);
 335         //pat->add_color_stop_rgb(1.0, 0.22, 0.22, 0.22);
 336         //cr->set_source(pat);
 337
 338         for (int i = lowest; i <= highest; ++i) {
 339                 oct_rel = i % 12;
 340
 341                 switch (oct_rel) {
 342                 case 1:
 343                 case 3:
 344                 case 6:
 345                 case 8:
 346                 case 10:
 347                         /* black note */
 348                         if (i == _highlighted_note) {
 349                                 bg.set(black_highlight);
 350                         } else {
 351                                 bg.set(black);
 352                         }
 353
 354                         if (_active_notes[i]) {
 355                                 tl_shadow.set(black_shade_dark);
 356                                 br_shadow.set(black_shade_light);
 357                         } else {
 358                                 tl_shadow.set(black_shade_light);
 359                                 br_shadow.set(black_shade_dark);
 360                         }
 361
 362                         /* draw black separators */
 363                         cr->set_source_rgb(0.0f, 0.0f, 0.0f);
 364                         get_path(BLACK_SEPARATOR, i, x, y);
 365                         create_path(cr, x, y, 0, 1);
 366                         cr->stroke();
 367
 368                         get_path(BLACK_MIDDLE_SEPARATOR, i, x, y);
 369                         create_path(cr, x, y, 0, 1);
 370                         cr->stroke();
 371
 372                         get_path(BLACK, i, x, y);
 373                         render_rect(cr, i, x, y, bg, tl_shadow, br_shadow);
 374                         break;
 375
 376                 default:
 377                         /* white note */
 378                         if (i == _highlighted_note) {
 379                                 bg.set(white_highlight);
 380                         } else {
 381                                 bg.set(white);
 382                         }
 383
 384                         if (_active_notes[i]) {
 385                                 tl_shadow.set(white_shade_dark);
 386                                 br_shadow.set(white_shade_light);
 387                         } else {
 388                                 tl_shadow.set(white_shade_light);
 389                                 br_shadow.set(white_shade_dark);
 390                         }
 391
 392                         switch(oct_rel) {
 393                         case 0:
 394                         case 5:
 395                                 if (i == _view.highest_note()) {
 396                                         get_path(WHITE_RECT, i, x, y);
 397                                         render_rect(cr, i, x, y, bg, tl_shadow, br_shadow);
 398                                 } else {
 399                                         get_path(WHITE_CF, i, x, y);
 400                                         render_cf(cr, i, x, y, bg, tl_shadow, br_shadow);
 401                                 }
 402                                 break;
 403
 404                         case 2:
 405                         case 7:
 406                         case 9:
 407                                 if (i == _view.highest_note()) {
 408                                         get_path(WHITE_EB, i, x, y);
 409                                         render_eb(cr, i, x, y, bg, tl_shadow, br_shadow);
 410                                 } else if (i == _view.lowest_note()) {
 411                                         get_path(WHITE_CF, i, x, y);
 412                                         render_cf(cr, i, x, y, bg, tl_shadow, br_shadow);
 413                                 } else {
 414                                         get_path(WHITE_DGA, i, x, y);
 415                                         render_dga(cr, i, x, y, bg, tl_shadow, br_shadow);
 416                                 }
 417                                 break;
 418
 419                         case 4:
 420                         case 11:
 421                                 cr->set_source_rgb(0.0f, 0.0f, 0.0f);
 422                                 get_path(WHITE_SEPARATOR, i, x, y);
 423                                 create_path(cr, x, y, 0, 1);
 424                                 cr->stroke();
 425
 426                                 if (i == _view.lowest_note()) {
 427                                         get_path(WHITE_RECT, i, x, y);
 428                                         render_rect(cr, i, x, y, bg, tl_shadow, br_shadow);
 429                                 } else {
 430                                         get_path(WHITE_EB, i, x, y);
 431                                         render_eb(cr, i, x, y, bg, tl_shadow, br_shadow);
 432                                 }
 433                                 break;
 434
 435                         default:
 436                                 break;
 437
 438                         }
 439                         break;
 440
 441                 }
 442
 443                 /* render the name of which C this is */
 444                 if (oct_rel == 0) {
 445                         std::stringstream s;
 446                         double y = floor(_view.note_to_y(i)) - 0.5f;
 447                         double note_height = floor(_view.note_to_y(i - 1)) - y;
 448
 449                         int cn = i / 12 - 1;
 450                         s << "C" << cn;
 451
 452                         //cr->get_text_extents(s.str(), te);
 453                         cr->set_source_rgb(0.30f, 0.30f, 0.30f);
 454                         cr->move_to(2.0f, y + note_height - 1.0f - (note_height - font_size) / 2.0f);
 455                         cr->show_text(s.str());
 456                 }
 457         }
 458
 459         return true;
 460 }
 461
 462 bool
 463 PianoRollHeader::on_motion_notify_event (GdkEventMotion* ev)
 464 {
 465         int note = _view.y_to_note(ev->y);
 466         set_note_highlight (note);
 467
 468         if (_dragging) {
 469
 470                 if ( false /*editor().current_mouse_mode() == Editing::MouseRange*/ ) {   //ToDo:  fix this.  this mode is buggy, and of questionable utility anyway
 471
 472                         /* select note range */
 473
 474                         if (Keyboard::no_modifiers_active (ev->state)) {
 475                                 AddNoteSelection (note); // EMIT SIGNAL
 476                         }
 477
 478                 } else {
 479                         /* play notes */
 480                         /* redraw already taken care of above in set_note_highlight */
 481                         if (_clicked_note != NO_MIDI_NOTE && _clicked_note != note) {
 482                                 _active_notes[_clicked_note] = false;
 483                                 send_note_off(_clicked_note);
 484
 485                                 _clicked_note = note;
 486
 487                                 if (!_active_notes[note]) {
 488                                         _active_notes[note] = true;
 489                                         send_note_on(note);
 490                                 }
 491                         }
 492                 }
 493         }
 494
 495         //win->process_updates(false);
 496
 497         return true;
 498 }
 499
 500 bool
 501 PianoRollHeader::on_button_press_event (GdkEventButton* ev)
 502 {
 503         int note = _view.y_to_note(ev->y);
 504         bool tertiary = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 505
 506         if (ev->button == 2 && Keyboard::no_modifiers_active (ev->state)) {
 507                 SetNoteSelection (note); // EMIT SIGNAL
 508                 return true;
 509         } else if (tertiary && (ev->button == 1 || ev->button == 2)) {
 510                 ExtendNoteSelection (note); // EMIT SIGNAL
 511                 return true;
 512         } else if (ev->button == 1 && note >= 0 && note < 128) {
 513                 add_modal_grab();
 514                 _dragging = true;
 515
 516                 if (!_active_notes[note]) {
 517                         _active_notes[note] = true;
 518                         _clicked_note = note;
 519                         send_note_on(note);
 520
 521                         invalidate_note_range(note, note);
 522                 } else {
 523                         reset_clicked_note(note);
 524                 }
 525         }
 526
 527         return true;
 528 }
 529
 530 bool
 531 PianoRollHeader::on_button_release_event (GdkEventButton* ev)
 532 {
 533         int note = _view.y_to_note(ev->y);
 534
 535         if (false /*editor().current_mouse_mode() == Editing::MouseRange*/ ) {  //Todo:  this mode is buggy, and of questionable utility anyway
 536
 537                 if (Keyboard::no_modifiers_active (ev->state)) {
 538                         AddNoteSelection (note); // EMIT SIGNAL
 539                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 540                         ToggleNoteSelection (note); // EMIT SIGNAL
 541                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
 542                         ExtendNoteSelection (note); // EMIT SIGNAL
 543                 }
 544
 545         } else {
 546
 547                 if (_dragging) {
 548                         remove_modal_grab();
 549
 550                         if (note == _clicked_note) {
 551                                 reset_clicked_note(note);
 552                         }
 553                 }
 554         }
 555
 556         _dragging = false;
 557         return true;
 558 }
 559
 560 void
 561 PianoRollHeader::set_note_highlight (uint8_t note) {
 562         if (_highlighted_note == note) {
 563                 return;
 564         }
 565
 566         if (_highlighted_note != NO_MIDI_NOTE) {
 567                 if (note > _highlighted_note) {
 568                         invalidate_note_range (_highlighted_note, note);
 569                 } else {
 570                         invalidate_note_range (note, _highlighted_note);
 571                 }
 572         }
 573
 574         _highlighted_note = note;
 575
 576         if (_highlighted_note != NO_MIDI_NOTE) {
 577                 invalidate_note_range (_highlighted_note, _highlighted_note);
 578         }
 579 }
 580
 581 bool
 582 PianoRollHeader::on_enter_notify_event (GdkEventCrossing* ev)
 583 {
 584         set_note_highlight (_view.y_to_note(ev->y));
 585         return true;
 586 }
 587
 588 bool
 589 PianoRollHeader::on_leave_notify_event (GdkEventCrossing*)
 590 {
 591         invalidate_note_range(_highlighted_note, _highlighted_note);
 592
 593         if (_clicked_note != NO_MIDI_NOTE) {
 594                 reset_clicked_note(_clicked_note, _clicked_note != _highlighted_note);
 595         }
 596
 597         _highlighted_note = NO_MIDI_NOTE;
 598         return true;
 599 }
 600
 601 bool
 602 PianoRollHeader::on_scroll_event (GdkEventScroll*)
 603 {
 604         return true;
 605 }
 606
 607 void
 608 PianoRollHeader::note_range_changed()
 609 {
 610         _note_height = floor(_view.note_height()) + 0.5f;
 611         queue_draw();
 612 }
 613
 614 void
 615 PianoRollHeader::invalidate_note_range(int lowest, int highest)
 616 {
 617         Glib::RefPtr<Gdk::Window> win = get_window();
 618         Gdk::Rectangle rect;
 619
 620         // the non-rectangular geometry of some of the notes requires more
 621         // redraws than the notes that actually changed.
 622         switch(lowest % 12) {
 623         case 0:
 624         case 5:
 625                 lowest = max((int) _view.lowest_note(), lowest);
 626                 break;
 627         default:
 628                 lowest = max((int) _view.lowest_note(), lowest - 1);
 629                 break;
 630         }
 631
 632         switch(highest % 12) {
 633         case 4:
 634         case 11:
 635                 highest = min((int) _view.highest_note(), highest);
 636                 break;
 637         case 1:
 638         case 3:
 639         case 6:
 640         case 8:
 641         case 10:
 642                 highest = min((int) _view.highest_note(), highest + 1);
 643                 break;
 644         default:
 645                 highest = min((int) _view.highest_note(), highest + 2);
 646                 break;
 647         }
 648
 649         double y = _view.note_to_y(highest);
 650         double height = _view.note_to_y(lowest - 1) - y;
 651
 652         rect.set_x(0);
 653         rect.set_width(get_width());
 654         rect.set_y((int) floor(y));
 655         rect.set_height((int) floor(height));
 656
 657         if (win) {
 658                 win->invalidate_rect(rect, false);
 659         }
 660 }
 661
 662 void
 663 PianoRollHeader::on_size_request(Gtk::Requisition* r)
 664 {
 665         r->width = std::max (20.f, rintf (20.f * UIConfiguration::instance().get_ui_scale()));
 666 }
 667
 668 void
 669 PianoRollHeader::on_size_allocate(Gtk::Allocation& a)
 670 {
 671         DrawingArea::on_size_allocate(a);
 672
 673         _black_note_width = floor(0.7 * get_width()) + 0.5f;
 674 }
 675
 676 void
 677 PianoRollHeader::send_note_on(uint8_t note)
 678 {
 679         boost::shared_ptr<ARDOUR::MidiTrack> track = _view.trackview().midi_track();
 680         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&_view.trackview ());
 681
 682         //cerr << "note on: " << (int) note << endl;
 683
 684         if (track) {
 685                 _event[0] = (MIDI_CMD_NOTE_ON | mtv->get_channel_for_add ());
 686                 _event[1] = note;
 687                 _event[2] = 100;
 688
 689                 track->write_immediate_event(3, _event);
 690         }
 691 }
 692
 693 void
 694 PianoRollHeader::send_note_off(uint8_t note)
 695 {
 696         boost::shared_ptr<ARDOUR::MidiTrack> track = _view.trackview().midi_track();
 697         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&_view.trackview ());
 698
 699         if (track) {
 700                 _event[0] = (MIDI_CMD_NOTE_OFF | mtv->get_channel_for_add ());
 701                 _event[1] = note;
 702                 _event[2] = 100;
 703
 704                 track->write_immediate_event(3, _event);
 705         }
 706 }
 707
 708 void
 709 PianoRollHeader::reset_clicked_note (uint8_t note, bool invalidate)
 710 {
 711         _active_notes[note] = false;
 712         _clicked_note = NO_MIDI_NOTE;
 713         send_note_off (note);
 714         if (invalidate) {
 715                 invalidate_note_range (note, note);
 716         }
 717 }
 718
 719 PublicEditor&
 720 PianoRollHeader::editor() const
 721 {
 722         return _view.trackview().editor();
 723 }