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
  31 const int no_note = 0xff;
  32
  33 using namespace std;
  34 using namespace Gtkmm2ext;
  35
  36 PianoRollHeader::Color PianoRollHeader::white = PianoRollHeader::Color(0.77f, 0.78f, 0.76f);
  37 PianoRollHeader::Color PianoRollHeader::white_highlight = PianoRollHeader::Color(0.87f, 0.88f, 0.86f);
  38 PianoRollHeader::Color PianoRollHeader::white_shade_light = PianoRollHeader::Color(0.95f, 0.95f, 0.95f);
  39 PianoRollHeader::Color PianoRollHeader::white_shade_dark = PianoRollHeader::Color(0.56f, 0.56f, 0.56f);
  40
  41 PianoRollHeader::Color PianoRollHeader::black = PianoRollHeader::Color(0.24f, 0.24f, 0.24f);
  42 PianoRollHeader::Color PianoRollHeader::black_highlight = PianoRollHeader::Color(0.30f, 0.30f, 0.30f);
  43 PianoRollHeader::Color PianoRollHeader::black_shade_light = PianoRollHeader::Color(0.46f, 0.46f, 0.46f);
  44 PianoRollHeader::Color PianoRollHeader::black_shade_dark = PianoRollHeader::Color(0.1f, 0.1f, 0.1f);
  45
  46 PianoRollHeader::Color::Color()
  47         : r(1.0f)
  48         , g(1.0f)
  49         , b(1.0f)
  50 {
  51 }
  52
  53 PianoRollHeader::Color::Color(double _r, double _g, double _b)
  54         : r(_r)
  55         , g(_g)
  56         , b(_b)
  57 {
  58 }
  59
  60 inline void
  61 PianoRollHeader::Color::set(const PianoRollHeader::Color& c)
  62 {
  63         r = c.r;
  64         g = c.g;
  65         b = c.b;
  66 }
  67
  68 PianoRollHeader::PianoRollHeader(MidiStreamView& v)
  69         : _view(v)
  70         , _highlighted_note(no_note)
  71         , _clicked_note(no_note)
  72         , _dragging(false)
  73 {
  74         add_events (Gdk::BUTTON_PRESS_MASK |
  75                     Gdk::BUTTON_RELEASE_MASK |
  76                     Gdk::POINTER_MOTION_MASK |
  77                     Gdk::ENTER_NOTIFY_MASK |
  78                     Gdk::LEAVE_NOTIFY_MASK |
  79                     Gdk::SCROLL_MASK);
  80
  81         for (int i = 0; i < 128; ++i) {
  82                 _active_notes[i] = false;
  83         }
  84
  85         _view.NoteRangeChanged.connect (sigc::mem_fun (*this, &PianoRollHeader::note_range_changed));
  86 }
  87
  88 inline void
  89 create_path(Cairo::RefPtr<Cairo::Context> cr, double x[], double y[], int start, int stop)
  90 {
  91         cr->move_to(x[start], y[start]);
  92
  93         for (int i = start+1; i <= stop; ++i) {
  94                 cr->line_to(x[i], y[i]);
  95         }
  96 }
  97
  98 inline void
  99 render_rect(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
 100              PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
 101 {
 102         cr->set_source_rgb(bg.r, bg.g, bg.b);
 103         create_path(cr, x, y, 0, 4);
 104         cr->fill();
 105
 106         cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
 107         create_path(cr, x, y, 0, 2);
 108         cr->stroke();
 109
 110         cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
 111         create_path(cr, x, y, 2, 4);
 112         cr->stroke();
 113 }
 114
 115 inline void
 116 render_cf(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
 117                 PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
 118 {
 119         cr->set_source_rgb(bg.r, bg.g, bg.b);
 120         create_path(cr, x, y, 0, 6);
 121         cr->fill();
 122
 123         cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
 124         create_path(cr, x, y, 0, 4);
 125         cr->stroke();
 126
 127         cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
 128         create_path(cr, x, y, 4, 6);
 129         cr->stroke();
 130 }
 131
 132 inline void
 133 render_eb(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
 134                 PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
 135 {
 136         cr->set_source_rgb(bg.r, bg.g, bg.b);
 137         create_path(cr, x, y, 0, 6);
 138         cr->fill();
 139
 140         cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
 141         create_path(cr, x, y, 0, 2);
 142         cr->stroke();
 143         create_path(cr, x, y, 4, 5);
 144         cr->stroke();
 145
 146         cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
 147         create_path(cr, x, y, 2, 4);
 148         cr->stroke();
 149         create_path(cr, x, y, 5, 6);
 150         cr->stroke();
 151 }
 152
 153 inline void
 154 render_dga(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
 155                  PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
 156 {
 157         cr->set_source_rgb(bg.r, bg.g, bg.b);
 158         create_path(cr, x, y, 0, 8);
 159         cr->fill();
 160
 161         cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
 162         create_path(cr, x, y, 0, 4);
 163         cr->stroke();
 164         create_path(cr, x, y, 6, 7);
 165         cr->stroke();
 166
 167         cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
 168         create_path(cr, x, y, 4, 6);
 169         cr->stroke();
 170         create_path(cr, x, y, 7, 8);
 171         cr->stroke();
 172 }
 173
 174 void
 175 PianoRollHeader::get_path(PianoRollHeader::ItemType note_type, int note, double x[], double y[])
 176 {
 177         double y_pos = floor(_view.note_to_y(note)) + 1.5f;
 178         double note_height;
 179         double other_y1 = floor(_view.note_to_y(note+1)) + floor(_note_height / 2.0f) + 2.5f;
 180         double other_y2 = floor(_view.note_to_y(note-1)) + floor(_note_height / 2.0f) + 1.0f;
 181         double width = get_width();
 182
 183         if (note == 0) {
 184                 note_height = floor(_view.contents_height()) - y_pos + 2.;
 185         } else {
 186                 note_height = floor(_view.note_to_y(note - 1)) - y_pos + 2.;
 187         }
 188
 189         switch (note_type) {
 190         case BLACK_SEPARATOR:
 191                 x[0] = 1.5f;
 192                 y[0] = y_pos;
 193                 x[1] = _black_note_width;
 194                 y[1] = y_pos;
 195                 break;
 196         case BLACK_MIDDLE_SEPARATOR:
 197                 x[0] = _black_note_width;
 198                 y[0] = y_pos + floor(_note_height / 2.0f);
 199                 x[1] = width - 1.0f;
 200                 y[1] = y[0];
 201                 break;
 202         case BLACK:
 203                 x[0] = 1.5f;
 204                 y[0] = y_pos + note_height - 0.5f;
 205                 x[1] = 1.5f;
 206                 y[1] = y_pos + 1.0f;
 207                 x[2] = _black_note_width;
 208                 y[2] = y_pos + 1.0f;
 209                 x[3] = _black_note_width;
 210                 y[3] = y_pos + note_height - 0.5f;
 211                 x[4] = 1.5f;
 212                 y[4] = y_pos + note_height - 0.5f;
 213                 return;
 214         case WHITE_SEPARATOR:
 215                 x[0] = 1.5f;
 216                 y[0] = y_pos;
 217                 x[1] = width - 1.5f;
 218                 y[1] = y_pos;
 219                 break;
 220         case WHITE_RECT:
 221                 x[0] = 1.5f;
 222                 y[0] = y_pos + note_height - 0.5f;
 223                 x[1] = 1.5f;
 224                 y[1] = y_pos + 1.0f;
 225                 x[2] = width - 1.5f;
 226                 y[2] = y_pos + 1.0f;
 227                 x[3] = width - 1.5f;
 228                 y[3] = y_pos + note_height - 0.5f;
 229                 x[4] = 1.5f;
 230                 y[4] = y_pos + note_height - 0.5f;
 231                 return;
 232         case WHITE_CF:
 233                 x[0] = 1.5f;
 234                 y[0] = y_pos + note_height - 1.5f;
 235                 x[1] = 1.5f;
 236                 y[1] = y_pos + 1.0f;
 237                 x[2] = _black_note_width + 1.0f;
 238                 y[2] = y_pos + 1.0f;
 239                 x[3] = _black_note_width + 1.0f;
 240                 y[3] = other_y1;
 241                 x[4] = width - 1.5f;
 242                 y[4] = other_y1;
 243                 x[5] = width - 1.5f;
 244                 y[5] = y_pos + note_height - 1.5f;
 245                 x[6] = 1.5f;
 246                 y[6] = y_pos + note_height - 1.5f;
 247                 return;
 248         case WHITE_EB:
 249                 x[0] = 1.5f;
 250                 y[0] = y_pos + note_height - 1.5f;
 251                 x[1] = 1.5f;
 252                 y[1] = y_pos + 1.0f;
 253                 x[2] = width - 1.5f;
 254                 y[2] = y_pos + 1.0f;
 255                 x[3] = width - 1.5f;
 256                 y[3] = other_y2;
 257                 x[4] = _black_note_width + 1.0f;
 258                 y[4] = other_y2;
 259                 x[5] = _black_note_width + 1.0f;
 260                 y[5] = y_pos + note_height - 1.5f;
 261                 x[6] = 1.5f;
 262                 y[6] = y_pos + note_height - 1.5f;
 263                 return;
 264         case WHITE_DGA:
 265                 x[0] = 1.5f;
 266                 y[0] = y_pos + note_height - 1.5f;
 267                 x[1] = 1.5f;
 268                 y[1] = y_pos + 1.0f;
 269                 x[2] = _black_note_width + 1.0f;
 270                 y[2] = y_pos + 1.0f;
 271                 x[3] = _black_note_width + 1.0f;
 272                 y[3] = other_y1;
 273                 x[4] = width - 1.5f;
 274                 y[4] = other_y1;
 275                 x[5] = width - 1.5f;
 276                 y[5] = other_y2;
 277                 x[6] = _black_note_width + 1.0f;
 278                 y[6] = other_y2;
 279                 x[7] = _black_note_width + 1.0f;
 280                 y[7] = y_pos + note_height - 1.5f;
 281                 x[8] = 1.5f;
 282                 y[8] = y_pos + note_height - 1.5f;
 283                 return;
 284         default:
 285                 return;
 286         }
 287 }
 288
 289 bool
 290 PianoRollHeader::on_expose_event (GdkEventExpose* ev)
 291 {
 292         GdkRectangle& rect = ev->area;
 293         double font_size;
 294         int lowest, highest;
 295         Cairo::RefPtr<Cairo::Context> cr = get_window()->create_cairo_context();
 296         Cairo::RefPtr<Cairo::LinearGradient> pat = Cairo::LinearGradient::create(0, 0, _black_note_width, 0);
 297         double x[9];
 298         double y[9];
 299         Color bg, tl_shadow, br_shadow;
 300         int oct_rel;
 301         int y1 = max(rect.y, 0);
 302         int y2 = min(rect.y + rect.height, (int) floor(_view.contents_height() - 1.0f));
 303
 304         //Cairo::TextExtents te;
 305         lowest = max(_view.lowest_note(), _view.y_to_note(y2));
 306         highest = min(_view.highest_note(), _view.y_to_note(y1));
 307
 308         if (lowest > 127) {
 309                 lowest = 0;
 310         }
 311
 312         cr->select_font_face ("Georgia", Cairo::FONT_SLANT_NORMAL, Cairo::FONT_WEIGHT_BOLD);
 313         font_size = min((double) 10.0f, _note_height - 4.0f);
 314         cr->set_font_size(font_size);
 315
 316         /* fill the entire rect with the color for non-highlighted white notes.
 317          * then we won't have to draw the background for those notes,
 318          * and would only have to draw the background for the one highlighted white note*/
 319         //cr->rectangle(rect.x, rect.y, rect.width, rect.height);
 320         //cr->set_source_rgb(white.r, white.g, white.b);
 321         //cr->fill();
 322
 323         cr->set_line_width(1.0f);
 324
 325         /* draw vertical lines with shade at both ends of the widget */
 326         cr->set_source_rgb(0.0f, 0.0f, 0.0f);
 327         cr->move_to(0.5f, rect.y);
 328         cr->line_to(0.5f, rect.y + rect.height);
 329         cr->stroke();
 330         cr->move_to(get_width() - 0.5f, rect.y);
 331         cr->line_to(get_width() - 0.5f, rect.y + rect.height);
 332         cr->stroke();
 333
 334         //pat->add_color_stop_rgb(0.0, 0.33, 0.33, 0.33);
 335         //pat->add_color_stop_rgb(0.2, 0.39, 0.39, 0.39);
 336         //pat->add_color_stop_rgb(1.0, 0.22, 0.22, 0.22);
 337         //cr->set_source(pat);
 338
 339         for (int i = lowest; i <= highest; ++i) {
 340                 oct_rel = i % 12;
 341
 342                 switch (oct_rel) {
 343                 case 1:
 344                 case 3:
 345                 case 6:
 346                 case 8:
 347                 case 10:
 348                         /* black note */
 349                         if (i == _highlighted_note) {
 350                                 bg.set(black_highlight);
 351                         } else {
 352                                 bg.set(black);
 353                         }
 354
 355                         if (_active_notes[i]) {
 356                                 tl_shadow.set(black_shade_dark);
 357                                 br_shadow.set(black_shade_light);
 358                         } else {
 359                                 tl_shadow.set(black_shade_light);
 360                                 br_shadow.set(black_shade_dark);
 361                         }
 362
 363                         /* draw black separators */
 364                         cr->set_source_rgb(0.0f, 0.0f, 0.0f);
 365                         get_path(BLACK_SEPARATOR, i, x, y);
 366                         create_path(cr, x, y, 0, 1);
 367                         cr->stroke();
 368
 369                         get_path(BLACK_MIDDLE_SEPARATOR, i, x, y);
 370                         create_path(cr, x, y, 0, 1);
 371                         cr->stroke();
 372
 373                         get_path(BLACK, i, x, y);
 374                         render_rect(cr, i, x, y, bg, tl_shadow, br_shadow);
 375                         break;
 376
 377                 default:
 378                         /* white note */
 379                         if (i == _highlighted_note) {
 380                                 bg.set(white_highlight);
 381                         } else {
 382                                 bg.set(white);
 383                         }
 384
 385                         if (_active_notes[i]) {
 386                                 tl_shadow.set(white_shade_dark);
 387                                 br_shadow.set(white_shade_light);
 388                         } else {
 389                                 tl_shadow.set(white_shade_light);
 390                                 br_shadow.set(white_shade_dark);
 391                         }
 392
 393                         switch(oct_rel) {
 394                         case 0:
 395                         case 5:
 396                                 if (i == _view.highest_note()) {
 397                                         get_path(WHITE_RECT, i, x, y);
 398                                         render_rect(cr, i, x, y, bg, tl_shadow, br_shadow);
 399                                 } else {
 400                                         get_path(WHITE_CF, i, x, y);
 401                                         render_cf(cr, i, x, y, bg, tl_shadow, br_shadow);
 402                                 }
 403                                 break;
 404
 405                         case 2:
 406                         case 7:
 407                         case 9:
 408                                 if (i == _view.highest_note()) {
 409                                         get_path(WHITE_EB, i, x, y);
 410                                         render_eb(cr, i, x, y, bg, tl_shadow, br_shadow);
 411                                 } else if (i == _view.lowest_note()) {
 412                                         get_path(WHITE_CF, i, x, y);
 413                                         render_cf(cr, i, x, y, bg, tl_shadow, br_shadow);
 414                                 } else {
 415                                         get_path(WHITE_DGA, i, x, y);
 416                                         render_dga(cr, i, x, y, bg, tl_shadow, br_shadow);
 417                                 }
 418                                 break;
 419
 420                         case 4:
 421                         case 11:
 422                                 cr->set_source_rgb(0.0f, 0.0f, 0.0f);
 423                                 get_path(WHITE_SEPARATOR, i, x, y);
 424                                 create_path(cr, x, y, 0, 1);
 425                                 cr->stroke();
 426
 427                                 if (i == _view.lowest_note()) {
 428                                         get_path(WHITE_RECT, i, x, y);
 429                                         render_rect(cr, i, x, y, bg, tl_shadow, br_shadow);
 430                                 } else {
 431                                         get_path(WHITE_EB, i, x, y);
 432                                         render_eb(cr, i, x, y, bg, tl_shadow, br_shadow);
 433                                 }
 434                                 break;
 435
 436                         default:
 437                                 break;
 438
 439                         }
 440                         break;
 441
 442                 }
 443
 444                 /* render the name of which C this is */
 445                 if (oct_rel == 0) {
 446                         std::stringstream s;
 447                         double y = floor(_view.note_to_y(i)) - 0.5f;
 448                         double note_height = floor(_view.note_to_y(i - 1)) - y;
 449
 450                         int cn = i / 12 - 1;
 451                         s << "C" << cn;
 452
 453                         //cr->get_text_extents(s.str(), te);
 454                         cr->set_source_rgb(0.30f, 0.30f, 0.30f);
 455                         cr->move_to(2.0f, y + note_height - 1.0f - (note_height - font_size) / 2.0f);
 456                         cr->show_text(s.str());
 457                 }
 458         }
 459
 460         return true;
 461 }
 462
 463 bool
 464 PianoRollHeader::on_motion_notify_event (GdkEventMotion* ev)
 465 {
 466         if (_dragging) {
 467
 468                 int note = _view.y_to_note(ev->y);
 469
 470                 if (editor().current_mouse_mode() == Editing::MouseRange) {
 471
 472                         /* select note range */
 473
 474                         if (Keyboard::no_modifiers_active (ev->state)) {
 475                                 AddNoteSelection (note); // EMIT SIGNAL
 476                         }
 477
 478                 } else {
 479
 480                         /* play notes */
 481
 482                         if (_highlighted_note != no_note) {
 483                                 if (note > _highlighted_note) {
 484                                         invalidate_note_range(_highlighted_note, note);
 485                                 } else {
 486                                         invalidate_note_range(note, _highlighted_note);
 487                                 }
 488
 489                                 _highlighted_note = note;
 490                         }
 491
 492                         /* redraw already taken care of above */
 493                         if (_clicked_note != no_note && _clicked_note != note) {
 494                                 _active_notes[_clicked_note] = false;
 495                                 send_note_off(_clicked_note);
 496
 497                                 _clicked_note = note;
 498
 499                                 if (!_active_notes[note]) {
 500                                         _active_notes[note] = true;
 501                                         send_note_on(note);
 502                                 }
 503                         }
 504                 }
 505         }
 506
 507         //win->process_updates(false);
 508
 509         return true;
 510 }
 511
 512 bool
 513 PianoRollHeader::on_button_press_event (GdkEventButton* ev)
 514 {
 515         int note = _view.y_to_note(ev->y);
 516
 517         if (ev->button == 2 && ev->type == GDK_BUTTON_PRESS) {
 518                 if (Keyboard::no_modifiers_active (ev->state)) {
 519                         SetNoteSelection (note); // EMIT SIGNAL
 520                         return true;
 521                 }
 522                 return false;
 523         }
 524
 525         if (ev->button == 1 && ev->type == GDK_BUTTON_PRESS && note >= 0 && note < 128) {
 526
 527                 add_modal_grab();
 528                 _dragging = true;
 529
 530                 if (!_active_notes[note]) {
 531                         _active_notes[note] = true;
 532                         _clicked_note = note;
 533                         send_note_on(note);
 534
 535                         invalidate_note_range(note, note);
 536                 } else {
 537                         reset_clicked_note(note);
 538                 }
 539         }
 540
 541         return true;
 542 }
 543
 544 bool
 545 PianoRollHeader::on_button_release_event (GdkEventButton* ev)
 546 {
 547         int note = _view.y_to_note(ev->y);
 548
 549         if (editor().current_mouse_mode() == Editing::MouseRange) {
 550
 551                 if (Keyboard::no_modifiers_active (ev->state)) {
 552                         AddNoteSelection (note); // EMIT SIGNAL
 553                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 554                         ToggleNoteSelection (note); // EMIT SIGNAL
 555                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
 556                         ExtendNoteSelection (note); // EMIT SIGNAL
 557                 }
 558
 559         } else {
 560
 561                 if (_dragging) {
 562                         remove_modal_grab();
 563
 564                         if (note == _clicked_note) {
 565                                 reset_clicked_note(note);
 566                         }
 567                 }
 568         }
 569
 570         _dragging = false;
 571         return true;
 572 }
 573
 574 bool
 575 PianoRollHeader::on_enter_notify_event (GdkEventCrossing* ev)
 576 {
 577         _highlighted_note = _view.y_to_note(ev->y);
 578
 579         invalidate_note_range(_highlighted_note, _highlighted_note);
 580         return true;
 581 }
 582
 583 bool
 584 PianoRollHeader::on_leave_notify_event (GdkEventCrossing*)
 585 {
 586         invalidate_note_range(_highlighted_note, _highlighted_note);
 587
 588         if (_clicked_note != no_note) {
 589                 reset_clicked_note(_clicked_note, _clicked_note != _highlighted_note);
 590         }
 591
 592         _highlighted_note = no_note;
 593         return true;
 594 }
 595
 596 bool
 597 PianoRollHeader::on_scroll_event (GdkEventScroll*)
 598 {
 599         return true;
 600 }
 601
 602 void
 603 PianoRollHeader::note_range_changed()
 604 {
 605         _note_height = floor(_view.note_height()) + 0.5f;
 606         queue_draw();
 607 }
 608
 609 void
 610 PianoRollHeader::invalidate_note_range(int lowest, int highest)
 611 {
 612         Glib::RefPtr<Gdk::Window> win = get_window();
 613         Gdk::Rectangle rect;
 614
 615         // the non-rectangular geometry of some of the notes requires more
 616         // redraws than the notes that actually changed.
 617         switch(lowest % 12) {
 618         case 0:
 619         case 5:
 620                 lowest = max((int) _view.lowest_note(), lowest);
 621                 break;
 622         default:
 623                 lowest = max((int) _view.lowest_note(), lowest - 1);
 624                 break;
 625         }
 626
 627         switch(highest % 12) {
 628         case 4:
 629         case 11:
 630                 highest = min((int) _view.highest_note(), highest);
 631                 break;
 632         case 1:
 633         case 3:
 634         case 6:
 635         case 8:
 636         case 10:
 637                 highest = min((int) _view.highest_note(), highest + 1);
 638                 break;
 639         default:
 640                 highest = min((int) _view.highest_note(), highest + 2);
 641                 break;
 642         }
 643
 644         double y = _view.note_to_y(highest);
 645         double height = _view.note_to_y(lowest - 1) - y;
 646
 647         rect.set_x(0);
 648         rect.set_width(get_width());
 649         rect.set_y((int) floor(y));
 650         rect.set_height((int) floor(height));
 651
 652         if (win) {
 653                 win->invalidate_rect(rect, false);
 654         }
 655 }
 656
 657 void
 658 PianoRollHeader::on_size_request(Gtk::Requisition* r)
 659 {
 660         r->width = 20;
 661 }
 662
 663 void
 664 PianoRollHeader::on_size_allocate(Gtk::Allocation& a)
 665 {
 666         DrawingArea::on_size_allocate(a);
 667
 668         _black_note_width = floor(0.7 * get_width()) + 0.5f;
 669 }
 670
 671 void
 672 PianoRollHeader::send_note_on(uint8_t note)
 673 {
 674         boost::shared_ptr<ARDOUR::MidiTrack> track = _view.trackview().midi_track();
 675         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&_view.trackview ());
 676
 677         //cerr << "note on: " << (int) note << endl;
 678
 679         if (track) {
 680                 _event[0] = (MIDI_CMD_NOTE_ON | mtv->get_channel_for_add ());
 681                 _event[1] = note;
 682                 _event[2] = 100;
 683
 684                 track->write_immediate_event(3, _event);
 685         }
 686 }
 687
 688 void
 689 PianoRollHeader::send_note_off(uint8_t note)
 690 {
 691         boost::shared_ptr<ARDOUR::MidiTrack> track = _view.trackview().midi_track();
 692         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&_view.trackview ());
 693
 694         if (track) {
 695                 _event[0] = (MIDI_CMD_NOTE_OFF | mtv->get_channel_for_add ());
 696                 _event[1] = note;
 697                 _event[2] = 100;
 698
 699                 track->write_immediate_event(3, _event);
 700         }
 701 }
 702
 703 void
 704 PianoRollHeader::reset_clicked_note (uint8_t note, bool invalidate)
 705 {
 706         _active_notes[note] = false;
 707         _clicked_note = no_note;
 708         send_note_off (note);
 709         if (invalidate) {
 710                 invalidate_note_range (note, note);
 711         }
 712 }
 713
 714 PublicEditor&
 715 PianoRollHeader::editor() const
 716 {
 717         return _view.trackview().editor();
 718 }