gtk2_ardour/piano_roll_header.cc

   1 /*
   2  * Copyright (C) 2008-2014 David Robillard <d@drobilla.net>
   3  * Copyright (C) 2009-2011 Carl Hetherington <carl@carlh.net>
   4  * Copyright (C) 2009-2013 Paul Davis <paul@linuxaudiosystems.com>
   5  * Copyright (C) 2014-2017 Robin Gareus <robin@gareus.org>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include <iostream>
  23 #include "evoral/midi_events.h"
  24 #include "ardour/midi_track.h"
  25
  26 #include "gtkmm2ext/keyboard.h"
  27
  28 #include "editing.h"
  29 #include "piano_roll_header.h"
  30 #include "midi_time_axis.h"
  31 #include "midi_streamview.h"
  32 #include "public_editor.h"
  33 #include "ui_config.h"
  34
  35 using namespace std;
  36 using namespace Gtkmm2ext;
  37
  38 PianoRollHeader::Color PianoRollHeader::white = PianoRollHeader::Color(0.77f, 0.78f, 0.76f);
  39 PianoRollHeader::Color PianoRollHeader::white_highlight = PianoRollHeader::Color(1.00f, 0.40f, 0.40f);
  40 PianoRollHeader::Color PianoRollHeader::white_shade_light = PianoRollHeader::Color(0.95f, 0.95f, 0.95f);
  41 PianoRollHeader::Color PianoRollHeader::white_shade_dark = PianoRollHeader::Color(0.56f, 0.56f, 0.56f);
  42
  43 PianoRollHeader::Color PianoRollHeader::black = PianoRollHeader::Color(0.24f, 0.24f, 0.24f);
  44 PianoRollHeader::Color PianoRollHeader::black_highlight = PianoRollHeader::Color(0.60f, 0.10f, 0.10f);
  45 PianoRollHeader::Color PianoRollHeader::black_shade_light = PianoRollHeader::Color(0.46f, 0.46f, 0.46f);
  46 PianoRollHeader::Color PianoRollHeader::black_shade_dark = PianoRollHeader::Color(0.1f, 0.1f, 0.1f);
  47
  48 PianoRollHeader::Color::Color()
  49         : r(1.0f)
  50         , g(1.0f)
  51         , b(1.0f)
  52 {
  53 }
  54
  55 PianoRollHeader::Color::Color(double _r, double _g, double _b)
  56         : r(_r)
  57         , g(_g)
  58         , b(_b)
  59 {
  60 }
  61
  62 inline void
  63 PianoRollHeader::Color::set(const PianoRollHeader::Color& c)
  64 {
  65         r = c.r;
  66         g = c.g;
  67         b = c.b;
  68 }
  69
  70 PianoRollHeader::PianoRollHeader(MidiStreamView& v)
  71         : _view(v)
  72         , _highlighted_note(NO_MIDI_NOTE)
  73         , _clicked_note(NO_MIDI_NOTE)
  74         , _dragging(false)
  75 {
  76         add_events (Gdk::BUTTON_PRESS_MASK |
  77                     Gdk::BUTTON_RELEASE_MASK |
  78                     Gdk::POINTER_MOTION_MASK |
  79                     Gdk::ENTER_NOTIFY_MASK |
  80                     Gdk::LEAVE_NOTIFY_MASK |
  81                     Gdk::SCROLL_MASK);
  82
  83         for (int i = 0; i < 128; ++i) {
  84                 _active_notes[i] = false;
  85         }
  86
  87         _view.NoteRangeChanged.connect (sigc::mem_fun (*this, &PianoRollHeader::note_range_changed));
  88 }
  89
  90 inline void
  91 create_path(Cairo::RefPtr<Cairo::Context> cr, double x[], double y[], int start, int stop)
  92 {
  93         cr->move_to(x[start], y[start]);
  94
  95         for (int i = start+1; i <= stop; ++i) {
  96                 cr->line_to(x[i], y[i]);
  97         }
  98 }
  99
 100 inline void
 101 render_rect(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
 102              PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
 103 {
 104         cr->set_source_rgb(bg.r, bg.g, bg.b);
 105         create_path(cr, x, y, 0, 4);
 106         cr->fill();
 107
 108         cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
 109         create_path(cr, x, y, 0, 2);
 110         cr->stroke();
 111
 112         cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
 113         create_path(cr, x, y, 2, 4);
 114         cr->stroke();
 115 }
 116
 117 inline void
 118 render_cf(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
 119                 PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
 120 {
 121         cr->set_source_rgb(bg.r, bg.g, bg.b);
 122         create_path(cr, x, y, 0, 6);
 123         cr->fill();
 124
 125         cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
 126         create_path(cr, x, y, 0, 4);
 127         cr->stroke();
 128
 129         cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
 130         create_path(cr, x, y, 4, 6);
 131         cr->stroke();
 132 }
 133
 134 inline void
 135 render_eb(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
 136                 PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
 137 {
 138         cr->set_source_rgb(bg.r, bg.g, bg.b);
 139         create_path(cr, x, y, 0, 6);
 140         cr->fill();
 141
 142         cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
 143         create_path(cr, x, y, 0, 2);
 144         cr->stroke();
 145         create_path(cr, x, y, 4, 5);
 146         cr->stroke();
 147
 148         cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
 149         create_path(cr, x, y, 2, 4);
 150         cr->stroke();
 151         create_path(cr, x, y, 5, 6);
 152         cr->stroke();
 153 }
 154
 155 inline void
 156 render_dga(Cairo::RefPtr<Cairo::Context> cr, int /*note*/, double x[], double y[],
 157                  PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
 158 {
 159         cr->set_source_rgb(bg.r, bg.g, bg.b);
 160         create_path(cr, x, y, 0, 8);
 161         cr->fill();
 162
 163         cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
 164         create_path(cr, x, y, 0, 4);
 165         cr->stroke();
 166         create_path(cr, x, y, 6, 7);
 167         cr->stroke();
 168
 169         cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
 170         create_path(cr, x, y, 4, 6);
 171         cr->stroke();
 172         create_path(cr, x, y, 7, 8);
 173         cr->stroke();
 174 }
 175
 176 void
 177 PianoRollHeader::get_path(PianoRollHeader::ItemType note_type, int note, double x[], double y[])
 178 {
 179         double y_pos = floor(_view.note_to_y(note)) + 1.5f;
 180         double note_height;
 181         double other_y1 = floor(_view.note_to_y(note+1)) + floor(_note_height / 2.0f) + 2.5f;
 182         double other_y2 = floor(_view.note_to_y(note-1)) + floor(_note_height / 2.0f) + 1.0f;
 183         double width = get_width();
 184
 185         if (note == 0) {
 186                 note_height = floor(_view.contents_height()) - y_pos + 2.;
 187         } else {
 188                 note_height = floor(_view.note_to_y(note - 1)) - y_pos + 2.;
 189         }
 190
 191         switch (note_type) {
 192         case BLACK_SEPARATOR:
 193                 x[0] = 1.5f;
 194                 y[0] = y_pos;
 195                 x[1] = _black_note_width;
 196                 y[1] = y_pos;
 197                 break;
 198         case BLACK_MIDDLE_SEPARATOR:
 199                 x[0] = _black_note_width;
 200                 y[0] = y_pos + floor(_note_height / 2.0f);
 201                 x[1] = width - 1.0f;
 202                 y[1] = y[0];
 203                 break;
 204         case BLACK:
 205                 x[0] = 1.5f;
 206                 y[0] = y_pos + note_height - 0.5f;
 207                 x[1] = 1.5f;
 208                 y[1] = y_pos + 1.0f;
 209                 x[2] = _black_note_width;
 210                 y[2] = y_pos + 1.0f;
 211                 x[3] = _black_note_width;
 212                 y[3] = y_pos + note_height - 0.5f;
 213                 x[4] = 1.5f;
 214                 y[4] = y_pos + note_height - 0.5f;
 215                 return;
 216         case WHITE_SEPARATOR:
 217                 x[0] = 1.5f;
 218                 y[0] = y_pos;
 219                 x[1] = width - 1.5f;
 220                 y[1] = y_pos;
 221                 break;
 222         case WHITE_RECT:
 223                 x[0] = 1.5f;
 224                 y[0] = y_pos + note_height - 0.5f;
 225                 x[1] = 1.5f;
 226                 y[1] = y_pos + 1.0f;
 227                 x[2] = width - 1.5f;
 228                 y[2] = y_pos + 1.0f;
 229                 x[3] = width - 1.5f;
 230                 y[3] = y_pos + note_height - 0.5f;
 231                 x[4] = 1.5f;
 232                 y[4] = y_pos + note_height - 0.5f;
 233                 return;
 234         case WHITE_CF:
 235                 x[0] = 1.5f;
 236                 y[0] = y_pos + note_height - 1.5f;
 237                 x[1] = 1.5f;
 238                 y[1] = y_pos + 1.0f;
 239                 x[2] = _black_note_width + 1.0f;
 240                 y[2] = y_pos + 1.0f;
 241                 x[3] = _black_note_width + 1.0f;
 242                 y[3] = other_y1;
 243                 x[4] = width - 1.5f;
 244                 y[4] = other_y1;
 245                 x[5] = width - 1.5f;
 246                 y[5] = y_pos + note_height - 1.5f;
 247                 x[6] = 1.5f;
 248                 y[6] = y_pos + note_height - 1.5f;
 249                 return;
 250         case WHITE_EB:
 251                 x[0] = 1.5f;
 252                 y[0] = y_pos + note_height - 1.5f;
 253                 x[1] = 1.5f;
 254                 y[1] = y_pos + 1.0f;
 255                 x[2] = width - 1.5f;
 256                 y[2] = y_pos + 1.0f;
 257                 x[3] = width - 1.5f;
 258                 y[3] = other_y2;
 259                 x[4] = _black_note_width + 1.0f;
 260                 y[4] = other_y2;
 261                 x[5] = _black_note_width + 1.0f;
 262                 y[5] = y_pos + note_height - 1.5f;
 263                 x[6] = 1.5f;
 264                 y[6] = y_pos + note_height - 1.5f;
 265                 return;
 266         case WHITE_DGA:
 267                 x[0] = 1.5f;
 268                 y[0] = y_pos + note_height - 1.5f;
 269                 x[1] = 1.5f;
 270                 y[1] = y_pos + 1.0f;
 271                 x[2] = _black_note_width + 1.0f;
 272                 y[2] = y_pos + 1.0f;
 273                 x[3] = _black_note_width + 1.0f;
 274                 y[3] = other_y1;
 275                 x[4] = width - 1.5f;
 276                 y[4] = other_y1;
 277                 x[5] = width - 1.5f;
 278                 y[5] = other_y2;
 279                 x[6] = _black_note_width + 1.0f;
 280                 y[6] = other_y2;
 281                 x[7] = _black_note_width + 1.0f;
 282                 y[7] = y_pos + note_height - 1.5f;
 283                 x[8] = 1.5f;
 284                 y[8] = y_pos + note_height - 1.5f;
 285                 return;
 286         default:
 287                 return;
 288         }
 289 }
 290
 291 bool
 292 PianoRollHeader::on_expose_event (GdkEventExpose* ev)
 293 {
 294         GdkRectangle& rect = ev->area;
 295         double font_size;
 296         int lowest, highest;
 297         Cairo::RefPtr<Cairo::Context> cr = get_window()->create_cairo_context();
 298         Cairo::RefPtr<Cairo::LinearGradient> pat = Cairo::LinearGradient::create(0, 0, _black_note_width, 0);
 299         double x[9];
 300         double y[9];
 301         Color bg, tl_shadow, br_shadow;
 302         int oct_rel;
 303         int y1 = max(rect.y, 0);
 304         int y2 = min(rect.y + rect.height, (int) floor(_view.contents_height() - 1.0f));
 305
 306         //Cairo::TextExtents te;
 307         lowest = max(_view.lowest_note(), _view.y_to_note(y2));
 308         highest = min(_view.highest_note(), _view.y_to_note(y1));
 309
 310         if (lowest > 127) {
 311                 lowest = 0;
 312         }
 313
 314         cr->select_font_face ("Georgia", Cairo::FONT_SLANT_NORMAL, Cairo::FONT_WEIGHT_BOLD);
 315         font_size = min((double) 10.0f, _note_height - 4.0f);
 316         cr->set_font_size(font_size);
 317
 318         /* fill the entire rect with the color for non-highlighted white notes.
 319          * then we won't have to draw the background for those notes,
 320          * and would only have to draw the background for the one highlighted white note*/
 321         //cr->rectangle(rect.x, rect.y, rect.width, rect.height);
 322         //cr->set_source_rgb(white.r, white.g, white.b);
 323         //cr->fill();
 324
 325         cr->set_line_width(1.0f);
 326
 327         /* draw vertical lines with shade at both ends of the widget */
 328         cr->set_source_rgb(0.0f, 0.0f, 0.0f);
 329         cr->move_to(0.5f, rect.y);
 330         cr->line_to(0.5f, rect.y + rect.height);
 331         cr->stroke();
 332         cr->move_to(get_width() - 0.5f, rect.y);
 333         cr->line_to(get_width() - 0.5f, rect.y + rect.height);
 334         cr->stroke();
 335
 336         //pat->add_color_stop_rgb(0.0, 0.33, 0.33, 0.33);
 337         //pat->add_color_stop_rgb(0.2, 0.39, 0.39, 0.39);
 338         //pat->add_color_stop_rgb(1.0, 0.22, 0.22, 0.22);
 339         //cr->set_source(pat);
 340
 341         for (int i = lowest; i <= highest; ++i) {
 342                 oct_rel = i % 12;
 343
 344                 switch (oct_rel) {
 345                 case 1:
 346                 case 3:
 347                 case 6:
 348                 case 8:
 349                 case 10:
 350                         /* black note */
 351                         if (i == _highlighted_note) {
 352                                 bg.set(black_highlight);
 353                         } else {
 354                                 bg.set(black);
 355                         }
 356
 357                         if (_active_notes[i]) {
 358                                 tl_shadow.set(black_shade_dark);
 359                                 br_shadow.set(black_shade_light);
 360                         } else {
 361                                 tl_shadow.set(black_shade_light);
 362                                 br_shadow.set(black_shade_dark);
 363                         }
 364
 365                         /* draw black separators */
 366                         cr->set_source_rgb(0.0f, 0.0f, 0.0f);
 367                         get_path(BLACK_SEPARATOR, i, x, y);
 368                         create_path(cr, x, y, 0, 1);
 369                         cr->stroke();
 370
 371                         get_path(BLACK_MIDDLE_SEPARATOR, i, x, y);
 372                         create_path(cr, x, y, 0, 1);
 373                         cr->stroke();
 374
 375                         get_path(BLACK, i, x, y);
 376                         render_rect(cr, i, x, y, bg, tl_shadow, br_shadow);
 377                         break;
 378
 379                 default:
 380                         /* white note */
 381                         if (i == _highlighted_note) {
 382                                 bg.set(white_highlight);
 383                         } else {
 384                                 bg.set(white);
 385                         }
 386
 387                         if (_active_notes[i]) {
 388                                 tl_shadow.set(white_shade_dark);
 389                                 br_shadow.set(white_shade_light);
 390                         } else {
 391                                 tl_shadow.set(white_shade_light);
 392                                 br_shadow.set(white_shade_dark);
 393                         }
 394
 395                         switch(oct_rel) {
 396                         case 0:
 397                         case 5:
 398                                 if (i == _view.highest_note()) {
 399                                         get_path(WHITE_RECT, i, x, y);
 400                                         render_rect(cr, i, x, y, bg, tl_shadow, br_shadow);
 401                                 } else {
 402                                         get_path(WHITE_CF, i, x, y);
 403                                         render_cf(cr, i, x, y, bg, tl_shadow, br_shadow);
 404                                 }
 405                                 break;
 406
 407                         case 2:
 408                         case 7:
 409                         case 9:
 410                                 if (i == _view.highest_note()) {
 411                                         get_path(WHITE_EB, i, x, y);
 412                                         render_eb(cr, i, x, y, bg, tl_shadow, br_shadow);
 413                                 } else if (i == _view.lowest_note()) {
 414                                         get_path(WHITE_CF, i, x, y);
 415                                         render_cf(cr, i, x, y, bg, tl_shadow, br_shadow);
 416                                 } else {
 417                                         get_path(WHITE_DGA, i, x, y);
 418                                         render_dga(cr, i, x, y, bg, tl_shadow, br_shadow);
 419                                 }
 420                                 break;
 421
 422                         case 4:
 423                         case 11:
 424                                 cr->set_source_rgb(0.0f, 0.0f, 0.0f);
 425                                 get_path(WHITE_SEPARATOR, i, x, y);
 426                                 create_path(cr, x, y, 0, 1);
 427                                 cr->stroke();
 428
 429                                 if (i == _view.lowest_note()) {
 430                                         get_path(WHITE_RECT, i, x, y);
 431                                         render_rect(cr, i, x, y, bg, tl_shadow, br_shadow);
 432                                 } else {
 433                                         get_path(WHITE_EB, i, x, y);
 434                                         render_eb(cr, i, x, y, bg, tl_shadow, br_shadow);
 435                                 }
 436                                 break;
 437
 438                         default:
 439                                 break;
 440
 441                         }
 442                         break;
 443
 444                 }
 445
 446                 /* render the name of which C this is */
 447                 if (oct_rel == 0) {
 448                         std::stringstream s;
 449                         double y = floor(_view.note_to_y(i)) - 0.5f;
 450                         double note_height = floor(_view.note_to_y(i - 1)) - y;
 451
 452                         int cn = i / 12 - 1;
 453                         s << "C" << cn;
 454
 455                         //cr->get_text_extents(s.str(), te);
 456                         cr->set_source_rgb(0.30f, 0.30f, 0.30f);
 457                         cr->move_to(2.0f, y + note_height - 1.0f - (note_height - font_size) / 2.0f);
 458                         cr->show_text(s.str());
 459                 }
 460         }
 461
 462         return true;
 463 }
 464
 465 bool
 466 PianoRollHeader::on_motion_notify_event (GdkEventMotion* ev)
 467 {
 468         int note = _view.y_to_note(ev->y);
 469         set_note_highlight (note);
 470
 471         if (_dragging) {
 472
 473                 if ( false /*editor().current_mouse_mode() == Editing::MouseRange*/ ) {   //ToDo:  fix this.  this mode is buggy, and of questionable utility anyway
 474
 475                         /* select note range */
 476
 477                         if (Keyboard::no_modifiers_active (ev->state)) {
 478                                 AddNoteSelection (note); // EMIT SIGNAL
 479                         }
 480
 481                 } else {
 482                         /* play notes */
 483                         /* redraw already taken care of above in set_note_highlight */
 484                         if (_clicked_note != NO_MIDI_NOTE && _clicked_note != note) {
 485                                 _active_notes[_clicked_note] = false;
 486                                 send_note_off(_clicked_note);
 487
 488                                 _clicked_note = note;
 489
 490                                 if (!_active_notes[note]) {
 491                                         _active_notes[note] = true;
 492                                         send_note_on(note);
 493                                 }
 494                         }
 495                 }
 496         }
 497
 498         //win->process_updates(false);
 499
 500         return true;
 501 }
 502
 503 bool
 504 PianoRollHeader::on_button_press_event (GdkEventButton* ev)
 505 {
 506         int note = _view.y_to_note(ev->y);
 507         bool tertiary = Keyboard::modifier_state_contains (ev->state, Keyboard::TertiaryModifier);
 508
 509         if (ev->button == 2 && Keyboard::no_modifiers_active (ev->state)) {
 510                 SetNoteSelection (note); // EMIT SIGNAL
 511                 return true;
 512         } else if (tertiary && (ev->button == 1 || ev->button == 2)) {
 513                 ExtendNoteSelection (note); // EMIT SIGNAL
 514                 return true;
 515         } else if (ev->button == 1 && note >= 0 && note < 128) {
 516                 add_modal_grab();
 517                 _dragging = true;
 518
 519                 if (!_active_notes[note]) {
 520                         _active_notes[note] = true;
 521                         _clicked_note = note;
 522                         send_note_on(note);
 523
 524                         invalidate_note_range(note, note);
 525                 } else {
 526                         reset_clicked_note(note);
 527                 }
 528         }
 529
 530         return true;
 531 }
 532
 533 bool
 534 PianoRollHeader::on_button_release_event (GdkEventButton* ev)
 535 {
 536         int note = _view.y_to_note(ev->y);
 537
 538         if (false /*editor().current_mouse_mode() == Editing::MouseRange*/ ) {  //Todo:  this mode is buggy, and of questionable utility anyway
 539
 540                 if (Keyboard::no_modifiers_active (ev->state)) {
 541                         AddNoteSelection (note); // EMIT SIGNAL
 542                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 543                         ToggleNoteSelection (note); // EMIT SIGNAL
 544                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::RangeSelectModifier)) {
 545                         ExtendNoteSelection (note); // EMIT SIGNAL
 546                 }
 547
 548         } else {
 549
 550                 if (_dragging) {
 551                         remove_modal_grab();
 552
 553                         if (note == _clicked_note) {
 554                                 reset_clicked_note(note);
 555                         }
 556                 }
 557         }
 558
 559         _dragging = false;
 560         return true;
 561 }
 562
 563 void
 564 PianoRollHeader::set_note_highlight (uint8_t note) {
 565         if (_highlighted_note == note) {
 566                 return;
 567         }
 568
 569         if (_highlighted_note != NO_MIDI_NOTE) {
 570                 if (note > _highlighted_note) {
 571                         invalidate_note_range (_highlighted_note, note);
 572                 } else {
 573                         invalidate_note_range (note, _highlighted_note);
 574                 }
 575         }
 576
 577         _highlighted_note = note;
 578
 579         if (_highlighted_note != NO_MIDI_NOTE) {
 580                 invalidate_note_range (_highlighted_note, _highlighted_note);
 581         }
 582 }
 583
 584 bool
 585 PianoRollHeader::on_enter_notify_event (GdkEventCrossing* ev)
 586 {
 587         set_note_highlight (_view.y_to_note(ev->y));
 588         return true;
 589 }
 590
 591 bool
 592 PianoRollHeader::on_leave_notify_event (GdkEventCrossing*)
 593 {
 594         invalidate_note_range(_highlighted_note, _highlighted_note);
 595
 596         if (_clicked_note != NO_MIDI_NOTE) {
 597                 reset_clicked_note(_clicked_note, _clicked_note != _highlighted_note);
 598         }
 599
 600         _highlighted_note = NO_MIDI_NOTE;
 601         return true;
 602 }
 603
 604 bool
 605 PianoRollHeader::on_scroll_event (GdkEventScroll*)
 606 {
 607         return true;
 608 }
 609
 610 void
 611 PianoRollHeader::note_range_changed()
 612 {
 613         _note_height = floor(_view.note_height()) + 0.5f;
 614         queue_draw();
 615 }
 616
 617 void
 618 PianoRollHeader::invalidate_note_range(int lowest, int highest)
 619 {
 620         Glib::RefPtr<Gdk::Window> win = get_window();
 621         Gdk::Rectangle rect;
 622
 623         // the non-rectangular geometry of some of the notes requires more
 624         // redraws than the notes that actually changed.
 625         switch(lowest % 12) {
 626         case 0:
 627         case 5:
 628                 lowest = max((int) _view.lowest_note(), lowest);
 629                 break;
 630         default:
 631                 lowest = max((int) _view.lowest_note(), lowest - 1);
 632                 break;
 633         }
 634
 635         switch(highest % 12) {
 636         case 4:
 637         case 11:
 638                 highest = min((int) _view.highest_note(), highest);
 639                 break;
 640         case 1:
 641         case 3:
 642         case 6:
 643         case 8:
 644         case 10:
 645                 highest = min((int) _view.highest_note(), highest + 1);
 646                 break;
 647         default:
 648                 highest = min((int) _view.highest_note(), highest + 2);
 649                 break;
 650         }
 651
 652         double y = _view.note_to_y(highest);
 653         double height = _view.note_to_y(lowest - 1) - y;
 654
 655         rect.set_x(0);
 656         rect.set_width(get_width());
 657         rect.set_y((int) floor(y));
 658         rect.set_height((int) floor(height));
 659
 660         if (win) {
 661                 win->invalidate_rect(rect, false);
 662         }
 663 }
 664
 665 void
 666 PianoRollHeader::on_size_request(Gtk::Requisition* r)
 667 {
 668         r->width = std::max (20.f, rintf (20.f * UIConfiguration::instance().get_ui_scale()));
 669 }
 670
 671 void
 672 PianoRollHeader::on_size_allocate(Gtk::Allocation& a)
 673 {
 674         DrawingArea::on_size_allocate(a);
 675
 676         _black_note_width = floor(0.7 * get_width()) + 0.5f;
 677 }
 678
 679 void
 680 PianoRollHeader::send_note_on(uint8_t note)
 681 {
 682         boost::shared_ptr<ARDOUR::MidiTrack> track = _view.trackview().midi_track();
 683         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&_view.trackview ());
 684
 685         //cerr << "note on: " << (int) note << endl;
 686
 687         if (track) {
 688                 _event[0] = (MIDI_CMD_NOTE_ON | mtv->get_channel_for_add ());
 689                 _event[1] = note;
 690                 _event[2] = 100;
 691
 692                 track->write_immediate_event(3, _event);
 693         }
 694 }
 695
 696 void
 697 PianoRollHeader::send_note_off(uint8_t note)
 698 {
 699         boost::shared_ptr<ARDOUR::MidiTrack> track = _view.trackview().midi_track();
 700         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (&_view.trackview ());
 701
 702         if (track) {
 703                 _event[0] = (MIDI_CMD_NOTE_OFF | mtv->get_channel_for_add ());
 704                 _event[1] = note;
 705                 _event[2] = 100;
 706
 707                 track->write_immediate_event(3, _event);
 708         }
 709 }
 710
 711 void
 712 PianoRollHeader::reset_clicked_note (uint8_t note, bool invalidate)
 713 {
 714         _active_notes[note] = false;
 715         _clicked_note = NO_MIDI_NOTE;
 716         send_note_off (note);
 717         if (invalidate) {
 718                 invalidate_note_range (note, note);
 719         }
 720 }
 721
 722 PublicEditor&
 723 PianoRollHeader::editor() const
 724 {
 725         return _view.trackview().editor();
 726 }