gtk2_ardour/midi_streamview.cc

   1 /*
   2     Copyright (C) 2001-2007 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 <cmath>
  20 #include <cassert>
  21 #include <utility>
  22
  23 #include <gtkmm.h>
  24
  25 #include <gtkmm2ext/gtk_ui.h>
  26
  27 #include <ardour/midi_playlist.h>
  28 #include <ardour/midi_region.h>
  29 #include <ardour/midi_source.h>
  30 #include <ardour/midi_diskstream.h>
  31 #include <ardour/midi_track.h>
  32 #include <ardour/smf_source.h>
  33 #include <ardour/region_factory.h>
  34
  35 #include "midi_streamview.h"
  36 #include "region_view.h"
  37 #include "midi_region_view.h"
  38 #include "midi_time_axis.h"
  39 #include "canvas-simplerect.h"
  40 #include "region_selection.h"
  41 #include "selection.h"
  42 #include "public_editor.h"
  43 #include "ardour_ui.h"
  44 #include "rgb_macros.h"
  45 #include "gui_thread.h"
  46 #include "utils.h"
  47 #include "simplerect.h"
  48 #include "lineset.h"
  49
  50 using namespace std;
  51 using namespace ARDOUR;
  52 using namespace PBD;
  53 using namespace Editing;
  54
  55 MidiStreamView::MidiStreamView (MidiTimeAxisView& tv)
  56         : StreamView (tv)
  57         , note_range_adjustment(0.0f, 0.0f, 0.0f)
  58         , _range(ContentsRange)
  59         , _range_sum_cache(-1.0)
  60         , _lowest_note(60)
  61         , _highest_note(60)
  62 {
  63         if (tv.is_track())
  64                 stream_base_color = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
  65         else
  66                 stream_base_color = ARDOUR_UI::config()->canvasvar_MidiBusBase.get();
  67
  68         use_rec_regions = tv.editor.show_waveforms_recording ();
  69
  70         /* use a group dedicated to MIDI underlays. Audio underlays are not in this group. */
  71         midi_underlay_group = new ArdourCanvas::Group (*canvas_group);
  72         midi_underlay_group->lower_to_bottom();
  73
  74         /* put the note lines in the timeaxisview's group, so it
  75            can be put below ghost regions from MIDI underlays*/
  76         _note_lines = new ArdourCanvas::Lineset(*canvas_group, ArdourCanvas::Lineset::Horizontal);
  77
  78         _note_lines->property_x1() = 0;
  79         _note_lines->property_y1() = 0;
  80         _note_lines->property_x2() = trackview().editor.frame_to_pixel (max_frames);
  81         _note_lines->property_y2() = 0;
  82
  83         _note_lines->signal_event().connect (bind (mem_fun (_trackview.editor, &PublicEditor::canvas_stream_view_event), _note_lines, &_trackview));
  84         _note_lines->lower_to_bottom();
  85
  86         note_range_adjustment.signal_value_changed().connect (mem_fun (*this, &MidiStreamView::note_range_adjustment_changed));
  87         ColorsChanged.connect(mem_fun(*this, &MidiStreamView::draw_note_lines));
  88 }
  89
  90 MidiStreamView::~MidiStreamView ()
  91 {
  92 }
  93
  94
  95 RegionView*
  96 MidiStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wfd, bool recording)
  97 {
  98         boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion> (r);
  99
 100         if (region == 0) {
 101                 return NULL;
 102         }
 103
 104         MidiRegionView *region_view;
 105         list<RegionView *>::iterator i;
 106
 107         for (i = region_views.begin(); i != region_views.end(); ++i) {
 108                 if ((*i)->region() == r) {
 109
 110                         /* great. we already have a MidiRegionView for this Region. use it again. */
 111
 112                         (*i)->set_valid (true);
 113                         (*i)->enable_display(wfd);
 114                         display_region(dynamic_cast<MidiRegionView*>(*i), wfd);
 115
 116                         return NULL;
 117                 }
 118         }
 119
 120         region_view = new MidiRegionView (canvas_group, _trackview, region,
 121                         _samples_per_unit, region_color);
 122
 123         region_view->init (region_color, false);
 124         region_views.push_front (region_view);
 125
 126         /* follow global waveform setting */
 127
 128         if (wfd) {
 129                 region_view->enable_display(true);
 130                 region_view->midi_region()->midi_source(0)->load_model();
 131         }
 132
 133         /* display events and find note range */
 134         display_region(region_view, wfd);
 135
 136         /* always display at least 1 octave range */
 137         _highest_note = max(_highest_note, static_cast<uint8_t>(_lowest_note + 11));
 138
 139         /* catch regionview going away */
 140         region->GoingAway.connect (bind (mem_fun (*this, &MidiStreamView::remove_region_view), region));
 141
 142         RegionViewAdded (region_view);
 143
 144         return region_view;
 145 }
 146
 147 void
 148 MidiStreamView::display_region(MidiRegionView* region_view, bool load_model)
 149 {
 150         if ( ! region_view)
 151                 return;
 152
 153         boost::shared_ptr<MidiSource> source(region_view->midi_region()->midi_source(0));
 154
 155         if (load_model)
 156                 source->load_model();
 157
 158         // Find our note range
 159         if (source->model())
 160                 for (size_t i=0; i < source->model()->n_notes(); ++i)
 161                         update_bounds(source->model()->note_at(i)->note());
 162
 163         // Display region contents
 164         region_view->display_model(source->model());
 165 }
 166
 167 void
 168 MidiStreamView::display_diskstream (boost::shared_ptr<Diskstream> ds)
 169 {
 170         StreamView::display_diskstream(ds);
 171         draw_note_lines();
 172         NoteRangeChanged();
 173 }
 174
 175 // FIXME: code duplication with AudioStreamView
 176 void
 177 MidiStreamView::redisplay_diskstream ()
 178 {
 179         list<RegionView *>::iterator i, tmp;
 180
 181         for (i = region_views.begin(); i != region_views.end(); ++i) {
 182                 (*i)->enable_display(true); // FIXME: double display, remove
 183                 (*i)->set_valid (false);
 184
 185                 /* FIXME: slow.  MidiRegionView needs a find_note_range method
 186                  * that finds the range without wasting time drawing the events */
 187
 188                 // Load model if it isn't already, to get note range
 189                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*i);
 190                 mrv->midi_region()->midi_source(0)->load_model();
 191         }
 192
 193         if (_trackview.is_midi_track()) {
 194                 _trackview.get_diskstream()->playlist()->foreach_region (
 195                                 static_cast<StreamView*>(this), &StreamView::add_region_view);
 196         }
 197
 198         /* Always display at least one octave */
 199         if (_highest_note == 127) {
 200                 if (_lowest_note > (127 - 11)) {
 201                         _lowest_note = 127 - 11;
 202                 }
 203         } else if (_highest_note < _lowest_note + 11) {
 204                 _highest_note = _lowest_note + 11;
 205         }
 206
 207         RegionViewList copy;
 208
 209         /* Place regions */
 210         for (i = region_views.begin(); i != region_views.end(); ) {
 211                 tmp = i;
 212                 tmp++;
 213
 214                 if (!(*i)->is_valid()) {
 215                         delete *i;
 216                         region_views.erase (i);
 217                         i = tmp;
 218                         continue;
 219                 } else {
 220                         (*i)->enable_display(true);
 221                         (*i)->set_y_position_and_height(0, height); // apply note range
 222                 }
 223
 224                 /* Sort regionviews by layer so that when we call region_layered ()
 225                    the canvas layering works out (in non-stacked mode). */
 226
 227                 if (copy.size() == 0) {
 228                         copy.push_front((*i));
 229                         i = tmp;
 230                         continue;
 231                 }
 232
 233                 RegionViewList::iterator k = copy.begin();
 234                 RegionViewList::iterator l = copy.end();
 235                 l--;
 236
 237                 if ((*i)->region()->layer() <= (*k)->region()->layer()) {
 238                         copy.push_front((*i));
 239                         i = tmp;
 240                         continue;
 241                 } else if ((*i)->region()->layer() >= (*l)->region()->layer()) {
 242                         copy.push_back((*i));
 243                         i = tmp;
 244                         continue;
 245                 }
 246
 247                 for (RegionViewList::iterator j = copy.begin(); j != copy.end(); ++j) {
 248                         if ((*j)->region()->layer() >= (*i)->region()->layer()) {
 249                                 copy.insert(j, (*i));
 250                                 break;
 251                         }
 252                 }
 253
 254                 i = tmp;
 255         }
 256
 257         /* Fix canvas layering */
 258         for (RegionViewList::iterator j = copy.begin(); j != copy.end(); ++j) {
 259                 (*j)->enable_display(true);
 260                 (*j)->set_height (height);
 261                 region_layered (*j);
 262         }
 263
 264         /* Update note range and draw note lines */
 265         note_range_adjustment.set_page_size(_highest_note - _lowest_note);
 266         note_range_adjustment.set_value(_lowest_note);
 267         NoteRangeChanged();
 268         draw_note_lines();
 269 }
 270
 271
 272 void
 273 MidiStreamView::update_contents_y_position_and_height ()
 274 {
 275         StreamView::update_contents_y_position_and_height();
 276         _note_lines->property_y2() = height;
 277         draw_note_lines();
 278 }
 279
 280 void
 281 MidiStreamView::draw_note_lines()
 282 {
 283         double y;
 284         double prev_y = contents_height();
 285         uint32_t color;
 286
 287         _note_lines->clear();
 288
 289         for(int i = _lowest_note; i <= _highest_note; ++i) {
 290                 y = floor(note_to_y(i));
 291
 292                 _note_lines->add_line(prev_y, 1.0, ARDOUR_UI::config()->canvasvar_PianoRollBlackOutline.get());
 293
 294                 switch(i % 12) {
 295                 case 1:
 296                 case 3:
 297                 case 6:
 298                 case 8:
 299                 case 10:
 300                         color = ARDOUR_UI::config()->canvasvar_PianoRollBlack.get();
 301                         break;
 302                 default:
 303                         color = ARDOUR_UI::config()->canvasvar_PianoRollWhite.get();
 304                         break;
 305                 }
 306
 307                 if(i == _highest_note) {
 308                         _note_lines->add_line(y, prev_y - y, color);
 309                 }
 310                 else {
 311                         _note_lines->add_line(y + 1.0, prev_y - y - 1.0, color);
 312                 }
 313
 314                 prev_y = y;
 315         }
 316 }
 317
 318
 319 void
 320 MidiStreamView::set_note_range(VisibleNoteRange r)
 321 {
 322         _range = r;
 323         if (r == FullRange) {
 324                 _lowest_note = 0;
 325                 _highest_note = 127;
 326         } else {
 327                 _lowest_note = 60;
 328                 _highest_note = 60;
 329         }
 330         redisplay_diskstream();
 331 }
 332
 333 void
 334 MidiStreamView::set_note_range(uint8_t lowest, uint8_t highest) {
 335         if(_range == ContentsRange) {
 336                 _lowest_note = lowest;
 337                 _highest_note = highest;
 338
 339                 list<RegionView *>::iterator i;
 340                 for (i = region_views.begin(); i != region_views.end(); ++i) {
 341                         (*i)->set_y_position_and_height(0, height); // apply note range
 342                 }
 343         }
 344
 345         draw_note_lines();
 346         NoteRangeChanged();
 347 }
 348
 349 void
 350 MidiStreamView::update_bounds(uint8_t note_num)
 351 {
 352         _lowest_note = min(_lowest_note, note_num);
 353         _highest_note = max(_highest_note, note_num);
 354 }
 355
 356
 357 void
 358 MidiStreamView::setup_rec_box ()
 359 {
 360         // cerr << _trackview.name() << " streamview SRB\n";
 361
 362         if (_trackview.session().transport_rolling()) {
 363
 364                 if (!rec_active &&
 365                     _trackview.session().record_status() == Session::Recording &&
 366                     _trackview.get_diskstream()->record_enabled()) {
 367
 368                         if (use_rec_regions && rec_regions.size() == rec_rects.size()) {
 369
 370                                 /* add a new region, but don't bother if they set use_rec_regions mid-record */
 371
 372                                 MidiRegion::SourceList sources;
 373
 374                                 for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin(); prc != rec_data_ready_connections.end(); ++prc) {
 375                                         (*prc).disconnect();
 376                                 }
 377                                 rec_data_ready_connections.clear();
 378
 379                                 // FIXME
 380                                 boost::shared_ptr<MidiDiskstream> mds = boost::dynamic_pointer_cast<MidiDiskstream>(_trackview.get_diskstream());
 381                                 assert(mds);
 382
 383                                 sources.push_back(mds->write_source());
 384
 385                                 rec_data_ready_connections.push_back (mds->write_source()->ViewDataRangeReady.connect (bind (mem_fun (*this, &MidiStreamView::rec_data_range_ready), boost::weak_ptr<Source>(mds->write_source()))));
 386
 387                                 // handle multi
 388
 389                                 jack_nframes_t start = 0;
 390                                 if (rec_regions.size() > 0) {
 391                                         start = rec_regions.back().first->position() + _trackview.get_diskstream()->get_captured_frames(rec_regions.size()-1);
 392                                 }
 393
 394                                 boost::shared_ptr<MidiRegion> region (boost::dynamic_pointer_cast<MidiRegion>
 395                                         (RegionFactory::create (sources, start, 1 , "", 0, (Region::Flag)(Region::DefaultFlags | Region::DoNotSaveState), false)));
 396                                 assert(region);
 397                                 region->set_position (_trackview.session().transport_frame(), this);
 398                                 rec_regions.push_back (make_pair(region, (RegionView*)0));
 399
 400                                 // rec regions are destroyed in setup_rec_box
 401
 402                                 /* we add the region later */
 403                         }
 404
 405                         /* start a new rec box */
 406
 407                         boost::shared_ptr<MidiTrack> mt = _trackview.midi_track(); /* we know what it is already */
 408                         boost::shared_ptr<MidiDiskstream> ds = mt->midi_diskstream();
 409                         jack_nframes_t frame_pos = ds->current_capture_start ();
 410                         gdouble xstart = _trackview.editor.frame_to_pixel (frame_pos);
 411                         gdouble xend;
 412                         uint32_t fill_color;
 413
 414                         assert(_trackview.midi_track()->mode() == Normal);
 415
 416                         xend = xstart;
 417                         fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 418
 419                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
 420                         rec_rect->property_x1() = xstart;
 421                         rec_rect->property_y1() = 1.0;
 422                         rec_rect->property_x2() = xend;
 423                         rec_rect->property_y2() = (double) _trackview.current_height() - 1;
 424                         rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 425                         rec_rect->property_fill_color_rgba() = fill_color;
 426                         rec_rect->lower_to_bottom();
 427
 428                         RecBoxInfo recbox;
 429                         recbox.rectangle = rec_rect;
 430                         recbox.start = _trackview.session().transport_frame();
 431                         recbox.length = 0;
 432
 433                         rec_rects.push_back (recbox);
 434
 435                         screen_update_connection.disconnect();
 436                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (mem_fun (*this, &MidiStreamView::update_rec_box));
 437                         rec_updating = true;
 438                         rec_active = true;
 439
 440                 } else if (rec_active &&
 441                            (_trackview.session().record_status() != Session::Recording ||
 442                             !_trackview.get_diskstream()->record_enabled())) {
 443
 444                         screen_update_connection.disconnect();
 445                         rec_active = false;
 446                         rec_updating = false;
 447
 448                 }
 449
 450         } else {
 451
 452                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 453
 454                 if (!rec_rects.empty() || !rec_regions.empty()) {
 455
 456                         /* disconnect rapid update */
 457                         screen_update_connection.disconnect();
 458
 459                         for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin(); prc != rec_data_ready_connections.end(); ++prc) {
 460                                 (*prc).disconnect();
 461                         }
 462                         rec_data_ready_connections.clear();
 463
 464                         rec_updating = false;
 465                         rec_active = false;
 466
 467                         /* remove temp regions */
 468
 469                         for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end();) {
 470                                 list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 471
 472                                 tmp = iter;
 473                                 ++tmp;
 474
 475                                 (*iter).first->drop_references ();
 476
 477                                 iter = tmp;
 478                         }
 479
 480                         rec_regions.clear();
 481
 482                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 483
 484                         /* transport stopped, clear boxes */
 485                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 486                                 RecBoxInfo &rect = (*iter);
 487                                 delete rect.rectangle;
 488                         }
 489
 490                         rec_rects.clear();
 491
 492                 }
 493         }
 494 }
 495
 496 void
 497 MidiStreamView::update_rec_regions (boost::shared_ptr<MidiModel> data, nframes_t start, nframes_t dur)
 498 {
 499         ENSURE_GUI_THREAD (bind (mem_fun (*this, &MidiStreamView::update_rec_regions), data, start, dur));
 500
 501         if (use_rec_regions) {
 502
 503                 uint32_t n = 0;
 504                 bool     update_range = false;
 505
 506                 for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); n++) {
 507
 508                         list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 509
 510                         tmp = iter;
 511                         ++tmp;
 512
 513                         boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion>(iter->first);
 514                         if (!region || !iter->second) {
 515                                 iter = tmp;
 516                                 continue;
 517                         }
 518
 519                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 520                                 /* rect already hidden, this region is done */
 521                                 iter = tmp;
 522                                 continue;
 523                         }
 524
 525                         nframes_t origlen = region->length();
 526
 527                         if (region == rec_regions.back().first && rec_active) {
 528
 529                                 if (start >= region->midi_source(0)->timeline_position()) {
 530
 531                                         nframes_t nlen = start + dur - region->position();
 532
 533                                         if (nlen != region->length()) {
 534
 535                                                 region->freeze ();
 536                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 537                                                 region->set_length (start + dur - region->position(), this);
 538                                                 region->thaw ("updated");
 539
 540                                                 if (origlen == 1) {
 541                                                         /* our special initial length */
 542                                                         iter->second = add_region_view_internal (region, false);
 543                                                         ((MidiRegionView*)iter->second)->begin_write();
 544                                                 }
 545
 546                                                 /* also update rect */
 547                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 548                                                 gdouble xend = _trackview.editor.frame_to_pixel (region->position() + region->length());
 549                                                 rect->property_x2() = xend;
 550
 551                                                 /* draw events */
 552                                                 MidiRegionView* mrv = (MidiRegionView*)iter->second;
 553                                                 for (size_t i=0; i < data->n_notes(); ++i) {
 554
 555                                                         // FIXME: slooooooooow!
 556
 557                                                         const boost::shared_ptr<Evoral::Note> note = data->note_at(i);
 558
 559                                                         if (note->duration() > 0 && note->end_time() + region->position() > start)
 560                                                                 mrv->resolve_note(note->note(), note->end_time());
 561
 562                                                         if (note->time() + region->position() < start)
 563                                                                 continue;
 564
 565                                                         if (note->time() + region->position() > start + dur)
 566                                                                 break;
 567
 568                                                         mrv->add_note(note);
 569
 570                                                         if (note->note() < _lowest_note) {
 571                                                                 _lowest_note = note->note();
 572                                                                 update_range = true;
 573                                                         } else if (note->note() > _highest_note) {
 574                                                                 _highest_note = note->note();
 575                                                                 update_range = true;
 576                                                         }
 577                                                 }
 578
 579                                                 mrv->extend_active_notes();
 580                                         }
 581                                 }
 582
 583                         } else {
 584
 585                                 nframes_t nlen = _trackview.get_diskstream()->get_captured_frames(n);
 586
 587                                 if (nlen != region->length()) {
 588
 589                                         if (region->source(0)->length() >= region->position() + nlen) {
 590
 591                                                 region->freeze ();
 592                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 593                                                 region->set_length (nlen, this);
 594                                                 region->thaw ("updated");
 595
 596                                                 if (origlen == 1) {
 597                                                         /* our special initial length */
 598                                                         iter->second = add_region_view_internal (region, false);
 599                                                 }
 600
 601                                                 /* also hide rect */
 602                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 603                                                 rect->hide();
 604
 605                                         }
 606                                 }
 607                         }
 608
 609                         iter = tmp;
 610                 }
 611
 612                 if (update_range)
 613                         update_contents_y_position_and_height();
 614         }
 615 }
 616
 617 void
 618 MidiStreamView::rec_data_range_ready (jack_nframes_t start, jack_nframes_t dur, boost::weak_ptr<Source> weak_src)
 619 {
 620         // this is called from the butler thread for now
 621
 622         ENSURE_GUI_THREAD(bind (mem_fun (*this, &MidiStreamView::rec_data_range_ready), start, dur, weak_src));
 623
 624         boost::shared_ptr<SMFSource> src (boost::dynamic_pointer_cast<SMFSource>(weak_src.lock()));
 625
 626         this->update_rec_regions (src->model(), start, dur);
 627 }
 628
 629 void
 630 MidiStreamView::color_handler ()
 631 {
 632
 633         //case cMidiTrackBase:
 634         if (_trackview.is_midi_track()) {
 635                 //canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
 636         }
 637
 638         //case cMidiBusBase:
 639         if (!_trackview.is_midi_track()) {
 640                 //canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiBusBase.get();;
 641         }
 642 }
 643
 644 void
 645 MidiStreamView::note_range_adjustment_changed() {
 646         double sum = note_range_adjustment.get_value() + note_range_adjustment.get_page_size();
 647         int lowest = (int) floor(note_range_adjustment.get_value());
 648         int highest;
 649
 650         if(sum == _range_sum_cache) {
 651                 //cerr << "cached" << endl;
 652                 highest = (int) floor(sum);
 653         }
 654         else {
 655                 //cerr << "recalc" << endl;
 656                 highest = lowest + (int) floor(note_range_adjustment.get_page_size());
 657                 _range_sum_cache = sum;
 658         }
 659
 660         if(lowest == lowest_note() && highest == highest_note()) {
 661                 return;
 662         }
 663
 664         //cerr << "note range changed: " << lowest << " " << highest << endl;
 665         //cerr << "  val=" << v_zoom_adjustment.get_value() << " page=" << v_zoom_adjustment.get_page_size() << " sum=" << v_zoom_adjustment.get_value() + v_zoom_adjustment.get_page_size() << endl;
 666
 667         set_note_range(lowest, highest);
 668 }