gtk2_ardour/editor_rulers.cc

   1 /*
   2     Copyright (C) 2000 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
  20 #define __STDC_FORMAT_MACROS 1
  21 #include <cstdio> // for sprintf, grrr
  22 #include <cmath>
  23 #include <inttypes.h>
  24
  25 #include <string>
  26
  27 #include <gtk/gtkaction.h>
  28
  29 #include "ardour/session.h"
  30 #include "ardour/tempo.h"
  31 #include "ardour/profile.h"
  32 #include <gtkmm2ext/gtk_ui.h>
  33
  34 #include "editor.h"
  35 #include "editing.h"
  36 #include "actions.h"
  37 #include "gtk-custom-hruler.h"
  38 #include "gui_thread.h"
  39 #include "time_axis_view.h"
  40 #include "editor_drag.h"
  41
  42 #include "i18n.h"
  43
  44 using namespace ARDOUR;
  45 using namespace PBD;
  46 using namespace Gtk;
  47 using namespace Editing;
  48
  49 Editor *Editor::ruler_editor;
  50
  51 /* the order here must match the "metric" enums in editor.h */
  52
  53 GtkCustomMetric Editor::ruler_metrics[4] = {
  54         {1, Editor::_metric_get_timecode },
  55         {1, Editor::_metric_get_bbt },
  56         {1, Editor::_metric_get_frames },
  57         {1, Editor::_metric_get_minsec }
  58 };
  59
  60 void
  61 Editor::initialize_rulers ()
  62 {
  63         ruler_editor = this;
  64         ruler_grabbed_widget = 0;
  65
  66         _ruler_separator = new Gtk::HSeparator();
  67         _ruler_separator->set_size_request(-1, 2);
  68         _ruler_separator->set_name("TimebarPadding");
  69         _ruler_separator->show();
  70
  71         _minsec_ruler = gtk_custom_hruler_new ();
  72         minsec_ruler = Glib::wrap (_minsec_ruler);
  73         minsec_ruler->set_name ("MinSecRuler");
  74         minsec_ruler->set_size_request (-1, (int)timebar_height);
  75         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_minsec_ruler), &ruler_metrics[ruler_metric_minsec]);
  76         minsec_ruler->hide ();
  77         minsec_ruler->set_no_show_all();
  78
  79         _timecode_ruler = gtk_custom_hruler_new ();
  80         timecode_ruler = Glib::wrap (_timecode_ruler);
  81         timecode_ruler->set_name ("TimecodeRuler");
  82         timecode_ruler->set_size_request (-1, (int)timebar_height);
  83         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_timecode_ruler), &ruler_metrics[ruler_metric_timecode]);
  84         timecode_ruler->hide ();
  85         timecode_ruler->set_no_show_all();
  86         timecode_nmarks = 0;
  87
  88         _bbt_ruler = gtk_custom_hruler_new ();
  89         bbt_ruler = Glib::wrap (_bbt_ruler);
  90         bbt_ruler->set_name ("BBTRuler");
  91         bbt_ruler->set_size_request (-1, (int)timebar_height);
  92         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_bbt_ruler), &ruler_metrics[ruler_metric_bbt]);
  93         bbt_ruler->hide ();
  94         bbt_ruler->set_no_show_all();
  95         bbt_nmarks = 0;
  96
  97         _frames_ruler = gtk_custom_hruler_new ();
  98         frames_ruler = Glib::wrap (_frames_ruler);
  99         frames_ruler->set_name ("FramesRuler");
 100         frames_ruler->set_size_request (-1, (int)timebar_height);
 101         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_frames_ruler), &ruler_metrics[ruler_metric_frames]);
 102         frames_ruler->hide ();
 103         frames_ruler->set_no_show_all();
 104
 105         _bbt_ruler = gtk_custom_hruler_new ();
 106         bbt_ruler = Glib::wrap (_bbt_ruler);
 107         bbt_ruler->set_name ("BBTRuler");
 108         bbt_ruler->set_size_request (-1, (int)timebar_height);
 109         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_bbt_ruler), &ruler_metrics[ruler_metric_bbt]);
 110         bbt_ruler->hide ();
 111         bbt_ruler->set_no_show_all();
 112         minsec_ruler->hide ();
 113         minsec_ruler->set_no_show_all();
 114         minsec_nmarks = 0;
 115
 116         using namespace Box_Helpers;
 117         BoxList & ruler_lab_children =  ruler_label_vbox.children();
 118         BoxList & ruler_children =  time_canvas_vbox.children();
 119         BoxList & lab_children =  time_button_vbox.children();
 120
 121         BoxList::iterator canvaspos = ruler_children.begin();
 122
 123         lab_children.push_back (Element(meter_label, PACK_SHRINK, PACK_START));
 124         lab_children.push_back (Element(tempo_label, PACK_SHRINK, PACK_START));
 125         lab_children.push_back (Element(range_mark_label, PACK_SHRINK, PACK_START));
 126         lab_children.push_back (Element(transport_mark_label, PACK_SHRINK, PACK_START));
 127         lab_children.push_back (Element(cd_mark_label, PACK_SHRINK, PACK_START));
 128         lab_children.push_back (Element(mark_label, PACK_SHRINK, PACK_START));
 129
 130         ruler_lab_children.push_back (Element(minsec_label, PACK_SHRINK, PACK_START));
 131         ruler_children.insert (canvaspos, Element(*minsec_ruler, PACK_SHRINK, PACK_START));
 132         ruler_lab_children.push_back (Element(timecode_label, PACK_SHRINK, PACK_START));
 133         ruler_children.insert (canvaspos, Element(*timecode_ruler, PACK_SHRINK, PACK_START));
 134         ruler_lab_children.push_back (Element(frame_label, PACK_SHRINK, PACK_START));
 135         ruler_children.insert (canvaspos, Element(*frames_ruler, PACK_SHRINK, PACK_START));
 136         ruler_lab_children.push_back (Element(bbt_label, PACK_SHRINK, PACK_START));
 137         ruler_children.insert (canvaspos, Element(*bbt_ruler, PACK_SHRINK, PACK_START));
 138
 139         timecode_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 140         bbt_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 141         frames_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 142         minsec_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 143
 144         timecode_ruler->signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_release));
 145         bbt_ruler->signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_release));
 146         frames_ruler->signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_release));
 147         minsec_ruler->signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_release));
 148
 149         timecode_ruler->signal_button_press_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_press));
 150         bbt_ruler->signal_button_press_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_press));
 151         frames_ruler->signal_button_press_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_press));
 152         minsec_ruler->signal_button_press_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_press));
 153
 154         timecode_ruler->signal_motion_notify_event().connect (sigc::mem_fun(*this, &Editor::ruler_mouse_motion));
 155         bbt_ruler->signal_motion_notify_event().connect (sigc::mem_fun(*this, &Editor::ruler_mouse_motion));
 156         frames_ruler->signal_motion_notify_event().connect (sigc::mem_fun(*this, &Editor::ruler_mouse_motion));
 157         minsec_ruler->signal_motion_notify_event().connect (sigc::mem_fun(*this, &Editor::ruler_mouse_motion));
 158
 159         timecode_ruler->signal_scroll_event().connect (sigc::mem_fun(*this, &Editor::ruler_scroll));
 160         bbt_ruler->signal_scroll_event().connect (sigc::mem_fun(*this, &Editor::ruler_scroll));
 161         frames_ruler->signal_scroll_event().connect (sigc::mem_fun(*this, &Editor::ruler_scroll));
 162         minsec_ruler->signal_scroll_event().connect (sigc::mem_fun(*this, &Editor::ruler_scroll));
 163
 164         visible_timebars = 0; /*this will be changed below */
 165         canvas_timebars_vsize = 0;
 166 }
 167
 168 bool
 169 Editor::ruler_scroll (GdkEventScroll* event)
 170 {
 171         nframes64_t xdelta;
 172         int direction = event->direction;
 173         bool handled = false;
 174
 175         switch (direction) {
 176         case GDK_SCROLL_UP:
 177                 temporal_zoom_step (true);
 178                 handled = true;
 179                 break;
 180
 181         case GDK_SCROLL_DOWN:
 182                 temporal_zoom_step (false);
 183                 handled = true;
 184                 break;
 185
 186         case GDK_SCROLL_LEFT:
 187                 xdelta = (current_page_frames() / 2);
 188                 if (leftmost_frame > xdelta) {
 189                         reset_x_origin (leftmost_frame - xdelta);
 190                 } else {
 191                         reset_x_origin (0);
 192                 }
 193                 handled = true;
 194                 break;
 195
 196         case GDK_SCROLL_RIGHT:
 197                 xdelta = (current_page_frames() / 2);
 198                 if (max_frames - xdelta > leftmost_frame) {
 199                         reset_x_origin (leftmost_frame + xdelta);
 200                 } else {
 201                         reset_x_origin (max_frames - current_page_frames());
 202                 }
 203                 handled = true;
 204                 break;
 205
 206         default:
 207                 /* what? */
 208                 break;
 209         }
 210
 211         return handled;
 212 }
 213
 214
 215 gint
 216 Editor::ruler_button_press (GdkEventButton* ev)
 217 {
 218         if (session == 0) {
 219                 return FALSE;
 220         }
 221
 222         // jlc: grab ev->window ?
 223         //Gtk::Main::grab_add (*minsec_ruler);
 224         Widget * grab_widget = 0;
 225
 226         if (timecode_ruler->is_realized() && ev->window == timecode_ruler->get_window()->gobj()) {
 227                 grab_widget = timecode_ruler;
 228         } else if (bbt_ruler->is_realized() && ev->window == bbt_ruler->get_window()->gobj()) {
 229                 grab_widget = bbt_ruler;
 230         } else if (frames_ruler->is_realized() && ev->window == frames_ruler->get_window()->gobj()) {
 231                 grab_widget = frames_ruler;
 232         } else if (minsec_ruler->is_realized() && ev->window == minsec_ruler->get_window()->gobj()) {
 233                 grab_widget = minsec_ruler;
 234         }
 235
 236         if (grab_widget) {
 237                 grab_widget->add_modal_grab ();
 238                 ruler_grabbed_widget = grab_widget;
 239         }
 240
 241         if (ev->button == 1) {
 242                 // Since we will locate the playhead on button release, cancel any running
 243                 // auditions.
 244                 if (session->is_auditioning()) {
 245                         session->cancel_audition ();
 246                 }
 247
 248                 /* playhead cursor */
 249                 assert (_drag == 0);
 250                 _drag = new CursorDrag (this, &playhead_cursor->canvas_item, false);
 251                 _drag->start_grab (reinterpret_cast<GdkEvent *> (ev));
 252                 _dragging_playhead = true;
 253         }
 254
 255         return TRUE;
 256 }
 257
 258 gint
 259 Editor::ruler_button_release (GdkEventButton* ev)
 260 {
 261         if (session == 0) {
 262                 return FALSE;
 263         }
 264
 265         gint x,y;
 266         Gdk::ModifierType state;
 267
 268         if (_drag) {
 269                 _drag->end_grab (reinterpret_cast<GdkEvent*> (ev));
 270                 delete _drag;
 271                 _drag = 0;
 272                 _dragging_playhead = false;
 273         }
 274
 275         if (ev->button == 3) {
 276                 /* need to use the correct x,y, the event lies */
 277                 time_canvas_event_box.get_window()->get_pointer (x, y, state);
 278
 279                 stop_canvas_autoscroll();
 280
 281                 nframes64_t where = leftmost_frame + pixel_to_frame (x);
 282                 snap_to (where);
 283                 popup_ruler_menu (where);
 284         }
 285
 286         if (ruler_grabbed_widget) {
 287                 ruler_grabbed_widget->remove_modal_grab();
 288                 ruler_grabbed_widget = 0;
 289         }
 290
 291         return TRUE;
 292 }
 293
 294 gint
 295 Editor::ruler_label_button_release (GdkEventButton* ev)
 296 {
 297         if (ev->button == 3) {
 298                 Gtk::Menu* m= dynamic_cast<Gtk::Menu*> (ActionManager::get_widget (X_("/RulerMenuPopup")));
 299                 if (m) {
 300                         m->popup (1, ev->time);
 301                 }
 302         }
 303
 304         return TRUE;
 305 }
 306
 307
 308 gint
 309 Editor::ruler_mouse_motion (GdkEventMotion* ev)
 310 {
 311         if (session == 0) {
 312                 return FALSE;
 313         }
 314
 315         if (_drag) {
 316                 _drag->motion_handler (reinterpret_cast<GdkEvent*> (ev), false);
 317         }
 318
 319         return TRUE;
 320 }
 321
 322
 323 void
 324 Editor::popup_ruler_menu (nframes64_t where, ItemType t)
 325 {
 326         using namespace Menu_Helpers;
 327
 328         if (editor_ruler_menu == 0) {
 329                 editor_ruler_menu = new Menu;
 330                 editor_ruler_menu->set_name ("ArdourContextMenu");
 331         }
 332
 333         // always build from scratch
 334         MenuList& ruler_items = editor_ruler_menu->items();
 335         editor_ruler_menu->set_name ("ArdourContextMenu");
 336         ruler_items.clear();
 337
 338         switch (t) {
 339         case MarkerBarItem:
 340                 ruler_items.push_back (MenuElem (_("New location marker"), sigc::bind ( sigc::mem_fun(*this, &Editor::mouse_add_new_marker), where, false, false)));
 341                 ruler_items.push_back (MenuElem (_("Clear all locations"), sigc::mem_fun(*this, &Editor::clear_markers)));
 342                 ruler_items.push_back (MenuElem (_("Unhide locations"), sigc::mem_fun(*this, &Editor::unhide_markers)));
 343                 ruler_items.push_back (SeparatorElem ());
 344                 break;
 345         case RangeMarkerBarItem:
 346                 //ruler_items.push_back (MenuElem (_("New Range")));
 347                 ruler_items.push_back (MenuElem (_("Clear all ranges"), sigc::mem_fun(*this, &Editor::clear_ranges)));
 348                 ruler_items.push_back (MenuElem (_("Unhide ranges"), sigc::mem_fun(*this, &Editor::unhide_ranges)));
 349                 ruler_items.push_back (SeparatorElem ());
 350
 351                 break;
 352         case TransportMarkerBarItem:
 353
 354                 break;
 355
 356         case CdMarkerBarItem:
 357                 // TODO
 358                 ruler_items.push_back (MenuElem (_("New CD track marker"), sigc::bind ( sigc::mem_fun(*this, &Editor::mouse_add_new_marker), where, true, false)));
 359                 break;
 360
 361
 362         case TempoBarItem:
 363                 ruler_items.push_back (MenuElem (_("New Tempo"), sigc::bind ( sigc::mem_fun(*this, &Editor::mouse_add_new_tempo_event), where)));
 364                 ruler_items.push_back (MenuElem (_("Clear tempo")));
 365                 ruler_items.push_back (SeparatorElem ());
 366                 break;
 367
 368         case MeterBarItem:
 369                 ruler_items.push_back (MenuElem (_("New Meter"), sigc::bind ( sigc::mem_fun(*this, &Editor::mouse_add_new_meter_event), where)));
 370                 ruler_items.push_back (MenuElem (_("Clear meter")));
 371                 ruler_items.push_back (SeparatorElem ());
 372                 break;
 373
 374         default:
 375                 break;
 376         }
 377
 378         Glib::RefPtr<Action> action;
 379
 380         action = ActionManager::get_action ("Rulers", "toggle-minsec-ruler");
 381         if (action) {
 382                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 383         }
 384         if (!Profile->get_sae()) {
 385                 action = ActionManager::get_action ("Rulers", "toggle-timecode-ruler");
 386                 if (action) {
 387                         ruler_items.push_back (MenuElem (*action->create_menu_item()));
 388                 }
 389         }
 390         action = ActionManager::get_action ("Rulers", "toggle-samples-ruler");
 391         if (action) {
 392                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 393         }
 394         action = ActionManager::get_action ("Rulers", "toggle-bbt-ruler");
 395         if (action) {
 396                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 397         }
 398         action = ActionManager::get_action ("Rulers", "toggle-meter-ruler");
 399         if (action) {
 400                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 401         }
 402         action = ActionManager::get_action ("Rulers", "toggle-tempo-ruler");
 403         if (action) {
 404                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 405         }
 406         if (!Profile->get_sae()) {
 407                 action = ActionManager::get_action ("Rulers", "toggle-range-ruler");
 408                 if (action) {
 409                         ruler_items.push_back (MenuElem (*action->create_menu_item()));
 410                 }
 411         }
 412         action = ActionManager::get_action ("Rulers", "toggle-loop-punch-ruler");
 413         if (action) {
 414                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 415         }
 416         action = ActionManager::get_action ("Rulers", "toggle-cd-marker-ruler");
 417         if (action) {
 418                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 419         }
 420         action = ActionManager::get_action ("Rulers", "toggle-marker-ruler");
 421         if (action) {
 422                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 423         }
 424
 425         editor_ruler_menu->popup (1, gtk_get_current_event_time());
 426
 427         no_ruler_shown_update = false;
 428 }
 429
 430 void
 431 Editor::store_ruler_visibility ()
 432 {
 433         XMLNode* node = new XMLNode(X_("RulerVisibility"));
 434
 435         node->add_property (X_("timecode"), ruler_timecode_action->get_active() ? "yes": "no");
 436         node->add_property (X_("bbt"), ruler_bbt_action->get_active() ? "yes": "no");
 437         node->add_property (X_("frames"), ruler_samples_action->get_active() ? "yes": "no");
 438         node->add_property (X_("minsec"), ruler_minsec_action->get_active() ? "yes": "no");
 439         node->add_property (X_("tempo"), ruler_tempo_action->get_active() ? "yes": "no");
 440         node->add_property (X_("meter"), ruler_meter_action->get_active() ? "yes": "no");
 441         node->add_property (X_("marker"), ruler_marker_action->get_active() ? "yes": "no");
 442         node->add_property (X_("rangemarker"), ruler_range_action->get_active() ? "yes": "no");
 443         node->add_property (X_("transportmarker"), ruler_loop_punch_action->get_active() ? "yes": "no");
 444         node->add_property (X_("cdmarker"), ruler_cd_marker_action->get_active() ? "yes": "no");
 445
 446         session->add_extra_xml (*node);
 447         session->set_dirty ();
 448 }
 449
 450 void
 451 Editor::restore_ruler_visibility ()
 452 {
 453         XMLProperty* prop;
 454         XMLNode * node = session->extra_xml (X_("RulerVisibility"));
 455
 456         no_ruler_shown_update = true;
 457
 458         if (node) {
 459                 if ((prop = node->property ("timecode")) != 0) {
 460                         if (string_is_affirmative (prop->value())) {
 461                                 ruler_timecode_action->set_active (true);
 462                         } else {
 463                                 ruler_timecode_action->set_active (false);
 464                         }
 465                 }
 466                 if ((prop = node->property ("bbt")) != 0) {
 467                         if (string_is_affirmative (prop->value())) {
 468                                 ruler_bbt_action->set_active (true);
 469                         } else {
 470                                 ruler_bbt_action->set_active (false);
 471                         }
 472                 }
 473                 if ((prop = node->property ("frames")) != 0) {
 474                         if (string_is_affirmative (prop->value())) {
 475                                 ruler_samples_action->set_active (true);
 476                         } else {
 477                                 ruler_samples_action->set_active (false);
 478                         }
 479                 }
 480                 if ((prop = node->property ("minsec")) != 0) {
 481                         if (string_is_affirmative (prop->value())) {
 482                                 ruler_minsec_action->set_active (true);
 483                         } else {
 484                                 ruler_minsec_action->set_active (false);
 485                         }
 486                 }
 487                 if ((prop = node->property ("tempo")) != 0) {
 488                         if (string_is_affirmative (prop->value())) {
 489                                 ruler_tempo_action->set_active (true);
 490                         } else {
 491                                 ruler_tempo_action->set_active (false);
 492                         }
 493                 }
 494                 if ((prop = node->property ("meter")) != 0) {
 495                         if (string_is_affirmative (prop->value())) {
 496                                 ruler_meter_action->set_active (true);
 497                         } else {
 498                                 ruler_meter_action->set_active (false);
 499                         }
 500                 }
 501                 if ((prop = node->property ("marker")) != 0) {
 502                         if (string_is_affirmative (prop->value())) {
 503                                 ruler_marker_action->set_active (true);
 504                         } else {
 505                                 ruler_marker_action->set_active (false);
 506                         }
 507                 }
 508                 if ((prop = node->property ("rangemarker")) != 0) {
 509                         if (string_is_affirmative (prop->value())) {
 510                                 ruler_range_action->set_active (true);
 511                         } else {
 512                                 ruler_range_action->set_active (false);
 513                         }
 514                 }
 515
 516                 if ((prop = node->property ("transportmarker")) != 0) {
 517                         if (string_is_affirmative (prop->value())) {
 518                                 ruler_loop_punch_action->set_active (true);
 519                         } else {
 520                                 ruler_loop_punch_action->set_active (false);
 521                         }
 522                 }
 523
 524                 if ((prop = node->property ("cdmarker")) != 0) {
 525                         if (string_is_affirmative (prop->value())) {
 526                                 ruler_cd_marker_action->set_active (true);
 527                         } else {
 528                                 ruler_cd_marker_action->set_active (false);
 529                         }
 530
 531                 } else {
 532                         // this session doesn't yet know about the cdmarker ruler
 533                         // as a benefit to the user who doesn't know the feature exists, show the ruler if
 534                         // any cd marks exist
 535                         ruler_cd_marker_action->set_active (false);
 536                         const Locations::LocationList & locs = session->locations()->list();
 537                         for (Locations::LocationList::const_iterator i = locs.begin(); i != locs.end(); ++i) {
 538                                 if ((*i)->is_cd_marker()) {
 539                                         ruler_cd_marker_action->set_active (true);
 540                                         break;
 541                                 }
 542                         }
 543                 }
 544
 545         }
 546
 547         no_ruler_shown_update = false;
 548         update_ruler_visibility ();
 549 }
 550
 551 void
 552 Editor::update_ruler_visibility ()
 553 {
 554         int visible_rulers = 0;
 555
 556         if (no_ruler_shown_update) {
 557                 return;
 558         }
 559
 560         visible_timebars = 0;
 561
 562         if (ruler_minsec_action->get_active()) {
 563                 visible_rulers++;
 564                 minsec_label.show ();
 565                 minsec_ruler->show ();
 566         } else {
 567                 minsec_label.hide ();
 568                 minsec_ruler->hide ();
 569         }
 570
 571         if (ruler_timecode_action->get_active()) {
 572                 visible_rulers++;
 573                 timecode_label.show ();
 574                 timecode_ruler->show ();
 575         } else {
 576                 timecode_label.hide ();
 577                 timecode_ruler->hide ();
 578         }
 579
 580         if (ruler_samples_action->get_active()) {
 581                 visible_rulers++;
 582                 frame_label.show ();
 583                 frames_ruler->show ();
 584         } else {
 585                 frame_label.hide ();
 586                 frames_ruler->hide ();
 587         }
 588
 589         if (ruler_bbt_action->get_active()) {
 590                 visible_rulers++;
 591                 bbt_label.show ();
 592                 bbt_ruler->show ();
 593         } else {
 594                 bbt_label.hide ();
 595                 bbt_ruler->hide ();
 596         }
 597
 598         double tbpos = 0.0;
 599         double tbgpos = 0.0;
 600         double old_unit_pos;
 601
 602 #ifdef GTKOSX
 603         /* gtk update probs require this (damn) */
 604         meter_label.hide();
 605         tempo_label.hide();
 606         range_mark_label.hide();
 607         transport_mark_label.hide();
 608         cd_mark_label.hide();
 609         mark_label.hide();
 610 #endif
 611         if (ruler_meter_action->get_active()) {
 612                 old_unit_pos = meter_group->property_y();
 613                 if (tbpos != old_unit_pos) {
 614                         meter_group->move ( 0.0, tbpos - old_unit_pos);
 615                 }
 616                 old_unit_pos = meter_bar_group->property_y();
 617                 if (tbgpos != old_unit_pos) {
 618                         meter_bar_group->move ( 0.0, tbgpos - old_unit_pos);
 619                 }
 620                 meter_bar_group->show();
 621                 meter_group->show();
 622                 meter_label.show();
 623                 tbpos += timebar_height;
 624                 tbgpos += timebar_height;
 625                 visible_timebars++;
 626         } else {
 627                 meter_bar_group->hide();
 628                 meter_group->hide();
 629                 meter_label.hide();
 630         }
 631
 632         if (ruler_tempo_action->get_active()) {
 633                 old_unit_pos = tempo_group->property_y();
 634                 if (tbpos != old_unit_pos) {
 635                         tempo_group->move(0.0, tbpos - old_unit_pos);
 636                 }
 637                 old_unit_pos = tempo_bar_group->property_y();
 638                 if (tbgpos != old_unit_pos) {
 639                         tempo_bar_group->move ( 0.0, tbgpos - old_unit_pos);
 640                 }
 641                 tempo_bar_group->show();
 642                 tempo_group->show();
 643                 tempo_label.show();
 644                 tbpos += timebar_height;
 645                 tbgpos += timebar_height;
 646                 visible_timebars++;
 647         } else {
 648                 tempo_bar_group->hide();
 649                 tempo_group->hide();
 650                 tempo_label.hide();
 651         }
 652
 653         if (!Profile->get_sae() && ruler_range_action->get_active()) {
 654                 old_unit_pos = range_marker_group->property_y();
 655                 if (tbpos != old_unit_pos) {
 656                         range_marker_group->move (0.0, tbpos - old_unit_pos);
 657                 }
 658                 old_unit_pos = range_marker_bar_group->property_y();
 659                 if (tbgpos != old_unit_pos) {
 660                         range_marker_bar_group->move (0.0, tbgpos - old_unit_pos);
 661                 }
 662                 range_marker_bar_group->show();
 663                 range_marker_group->show();
 664                 range_mark_label.show();
 665
 666                 tbpos += timebar_height;
 667                 tbgpos += timebar_height;
 668                 visible_timebars++;
 669         } else {
 670                 range_marker_bar_group->hide();
 671                 range_marker_group->hide();
 672                 range_mark_label.hide();
 673         }
 674
 675         if (ruler_loop_punch_action->get_active()) {
 676                 old_unit_pos = transport_marker_group->property_y();
 677                 if (tbpos != old_unit_pos) {
 678                         transport_marker_group->move ( 0.0, tbpos - old_unit_pos);
 679                 }
 680                 old_unit_pos = transport_marker_bar_group->property_y();
 681                 if (tbgpos != old_unit_pos) {
 682                         transport_marker_bar_group->move ( 0.0, tbgpos - old_unit_pos);
 683                 }
 684                 transport_marker_bar_group->show();
 685                 transport_marker_group->show();
 686                 transport_mark_label.show();
 687                 tbpos += timebar_height;
 688                 tbgpos += timebar_height;
 689                 visible_timebars++;
 690         } else {
 691                 transport_marker_bar_group->hide();
 692                 transport_marker_group->hide();
 693                 transport_mark_label.hide();
 694         }
 695
 696         if (ruler_cd_marker_action->get_active()) {
 697                 old_unit_pos = cd_marker_group->property_y();
 698                 if (tbpos != old_unit_pos) {
 699                         cd_marker_group->move (0.0, tbpos - old_unit_pos);
 700                 }
 701                 old_unit_pos = cd_marker_bar_group->property_y();
 702                 if (tbgpos != old_unit_pos) {
 703                         cd_marker_bar_group->move (0.0, tbgpos - old_unit_pos);
 704                 }
 705                 cd_marker_bar_group->show();
 706                 cd_marker_group->show();
 707                 cd_mark_label.show();
 708                 tbpos += timebar_height;
 709                 tbgpos += timebar_height;
 710                 visible_timebars++;
 711                 // make sure all cd markers show up in their respective places
 712                 update_cd_marker_display();
 713         } else {
 714                 cd_marker_bar_group->hide();
 715                 cd_marker_group->hide();
 716                 cd_mark_label.hide();
 717                 // make sure all cd markers show up in their respective places
 718                 update_cd_marker_display();
 719         }
 720
 721         if (ruler_marker_action->get_active()) {
 722                 old_unit_pos = marker_group->property_y();
 723                 if (tbpos != old_unit_pos) {
 724                         marker_group->move ( 0.0, tbpos - old_unit_pos);
 725                 }
 726                 old_unit_pos = marker_bar_group->property_y();
 727                 if (tbgpos != old_unit_pos) {
 728                         marker_bar_group->move ( 0.0, tbgpos - old_unit_pos);
 729                 }
 730                 marker_bar_group->show();
 731                 marker_group->show();
 732                 mark_label.show();
 733                 tbpos += timebar_height;
 734                 tbgpos += timebar_height;
 735                 visible_timebars++;
 736         } else {
 737                 marker_bar_group->hide();
 738                 marker_group->hide();
 739                 mark_label.hide();
 740         }
 741
 742         gdouble old_canvas_timebars_vsize = canvas_timebars_vsize;
 743         canvas_timebars_vsize = (timebar_height * visible_timebars) - 1;
 744         gdouble vertical_pos_delta = canvas_timebars_vsize - old_canvas_timebars_vsize;
 745         vertical_adjustment.set_upper(vertical_adjustment.get_upper() + vertical_pos_delta);
 746         full_canvas_height += vertical_pos_delta;
 747
 748         if (vertical_adjustment.get_value() != 0 && (vertical_adjustment.get_value() + _canvas_height >= full_canvas_height)) {
 749                 /*if we're at the bottom of the canvas, don't move the _trackview_group*/
 750                 vertical_adjustment.set_value (full_canvas_height - _canvas_height + 1);
 751         } else {
 752                 _trackview_group->property_y () = - get_trackview_group_vertical_offset ();
 753                 _background_group->property_y () = - get_trackview_group_vertical_offset ();
 754                 _trackview_group->move (0, 0);
 755                 _background_group->move (0, 0);
 756                 last_trackview_group_vertical_offset = get_trackview_group_vertical_offset ();
 757         }
 758
 759         gdouble bottom_track_pos = vertical_adjustment.get_value() + _canvas_height - canvas_timebars_vsize;
 760         std::pair<TimeAxisView*, int> const p = trackview_by_y_position (bottom_track_pos);
 761         if (p.first) {
 762                 p.first->clip_to_viewport ();
 763         }
 764
 765         ruler_label_vbox.set_size_request (-1, (int)(timebar_height * visible_rulers));
 766         time_canvas_vbox.set_size_request (-1,-1);
 767
 768         update_fixed_rulers();
 769         redisplay_tempo (false);
 770 }
 771
 772 void
 773 Editor::update_just_timecode ()
 774 {
 775         ENSURE_GUI_THREAD (*this, &Editor::update_just_timecode)
 776
 777         if (session == 0) {
 778                 return;
 779         }
 780
 781         nframes64_t rightmost_frame = leftmost_frame + current_page_frames();
 782
 783         if (ruler_timecode_action->get_active()) {
 784                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_timecode_ruler), leftmost_frame, rightmost_frame,
 785                                             leftmost_frame, session->current_end_frame());
 786         }
 787 }
 788
 789 void
 790 Editor::compute_fixed_ruler_scale ()
 791 {
 792         if (session == 0) {
 793                 return;
 794         }
 795
 796         if (ruler_timecode_action->get_active()) {
 797                 set_timecode_ruler_scale (leftmost_frame, leftmost_frame + current_page_frames() );
 798         }
 799
 800         if (ruler_minsec_action->get_active()) {
 801                 set_minsec_ruler_scale (leftmost_frame, leftmost_frame + current_page_frames() );
 802         }
 803 }
 804
 805 void
 806 Editor::update_fixed_rulers ()
 807 {
 808         nframes64_t rightmost_frame;
 809
 810         if (session == 0) {
 811                 return;
 812         }
 813
 814         ruler_metrics[ruler_metric_timecode].units_per_pixel = frames_per_unit;
 815         ruler_metrics[ruler_metric_frames].units_per_pixel = frames_per_unit;
 816         ruler_metrics[ruler_metric_minsec].units_per_pixel = frames_per_unit;
 817
 818         rightmost_frame = leftmost_frame + current_page_frames();
 819
 820         /* these force a redraw, which in turn will force execution of the metric callbacks
 821            to compute the relevant ticks to display.
 822         */
 823
 824         if (ruler_timecode_action->get_active()) {
 825                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_timecode_ruler), leftmost_frame, rightmost_frame,
 826                                             leftmost_frame, session->current_end_frame());
 827         }
 828
 829         if (ruler_samples_action->get_active()) {
 830                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_frames_ruler), leftmost_frame, rightmost_frame,
 831                                             leftmost_frame, session->current_end_frame());
 832         }
 833
 834         if (ruler_minsec_action->get_active()) {
 835                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_minsec_ruler), leftmost_frame, rightmost_frame,
 836                                             leftmost_frame, session->current_end_frame());
 837         }
 838 }
 839
 840 void
 841 Editor::update_tempo_based_rulers ()
 842 {
 843         if (session == 0) {
 844                 return;
 845         }
 846
 847         ruler_metrics[ruler_metric_bbt].units_per_pixel = frames_per_unit;
 848
 849         if (ruler_bbt_action->get_active()) {
 850                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_bbt_ruler), leftmost_frame, leftmost_frame+current_page_frames(),
 851                                             leftmost_frame, session->current_end_frame());
 852         }
 853 }
 854
 855 /* Mark generation */
 856
 857 gint
 858 Editor::_metric_get_timecode (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 859 {
 860         return ruler_editor->metric_get_timecode (marks, lower, upper, maxchars);
 861 }
 862
 863 gint
 864 Editor::_metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 865 {
 866         return ruler_editor->metric_get_bbt (marks, lower, upper, maxchars);
 867 }
 868
 869 gint
 870 Editor::_metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 871 {
 872         return ruler_editor->metric_get_frames (marks, lower, upper, maxchars);
 873 }
 874
 875 gint
 876 Editor::_metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 877 {
 878         return ruler_editor->metric_get_minsec (marks, lower, upper, maxchars);
 879 }
 880
 881 void
 882 Editor::set_timecode_ruler_scale (gdouble lower, gdouble upper)
 883 {
 884         nframes64_t range;
 885         nframes64_t spacer;
 886         nframes64_t fr;
 887
 888         if (session == 0) {
 889                 return;
 890         }
 891
 892         fr = session->frame_rate();
 893
 894         if (lower > (spacer = (nframes64_t)(128 * Editor::get_current_zoom ()))) {
 895                 lower = lower - spacer;
 896         } else {
 897                 lower = 0;
 898         }
 899         upper = upper + spacer;
 900         range = (nframes64_t) floor (upper - lower);
 901
 902         if (range < (2 * session->frames_per_timecode_frame())) { /* 0 - 2 frames */
 903                 timecode_ruler_scale = timecode_show_bits;
 904                 timecode_mark_modulo = 20;
 905                 timecode_nmarks = 2 + (2 * session->config.get_subframes_per_frame());
 906         } else if (range <= (fr / 4)) { /* 2 frames - 0.250 second */
 907                 timecode_ruler_scale = timecode_show_frames;
 908                 timecode_mark_modulo = 1;
 909                 timecode_nmarks = 2 + (range / (nframes64_t)session->frames_per_timecode_frame());
 910         } else if (range <= (fr / 2)) { /* 0.25-0.5 second */
 911                 timecode_ruler_scale = timecode_show_frames;
 912                 timecode_mark_modulo = 2;
 913                 timecode_nmarks = 2 + (range / (nframes64_t)session->frames_per_timecode_frame());
 914         } else if (range <= fr) { /* 0.5-1 second */
 915                 timecode_ruler_scale = timecode_show_frames;
 916                 timecode_mark_modulo = 5;
 917                 timecode_nmarks = 2 + (range / (nframes64_t)session->frames_per_timecode_frame());
 918         } else if (range <= 2 * fr) { /* 1-2 seconds */
 919                 timecode_ruler_scale = timecode_show_frames;
 920                 timecode_mark_modulo = 10;
 921                 timecode_nmarks = 2 + (range / (nframes64_t)session->frames_per_timecode_frame());
 922         } else if (range <= 8 * fr) { /* 2-8 seconds */
 923                 timecode_ruler_scale = timecode_show_seconds;
 924                 timecode_mark_modulo = 1;
 925                 timecode_nmarks = 2 + (range / fr);
 926         } else if (range <= 16 * fr) { /* 8-16 seconds */
 927                 timecode_ruler_scale = timecode_show_seconds;
 928                 timecode_mark_modulo = 2;
 929                 timecode_nmarks = 2 + (range / fr);
 930         } else if (range <= 30 * fr) { /* 16-30 seconds */
 931                 timecode_ruler_scale = timecode_show_seconds;
 932                 timecode_mark_modulo = 5;
 933                 timecode_nmarks = 2 + (range / fr);
 934         } else if (range <= 60 * fr) { /* 30-60 seconds */
 935                 timecode_ruler_scale = timecode_show_seconds;
 936                 timecode_mark_modulo = 5;
 937                 timecode_nmarks = 2 + (range / fr);
 938         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
 939                 timecode_ruler_scale = timecode_show_seconds;
 940                 timecode_mark_modulo = 15;
 941                 timecode_nmarks = 2 + (range / fr);
 942         } else if (range <= 4 * 60 * fr) { /* 2-4 minutes */
 943                 timecode_ruler_scale = timecode_show_seconds;
 944                 timecode_mark_modulo = 30;
 945                 timecode_nmarks = 2 + (range / fr);
 946         } else if (range <= 10 * 60 * fr) { /* 4-10 minutes */
 947                 timecode_ruler_scale = timecode_show_minutes;
 948                 timecode_mark_modulo = 2;
 949                 timecode_nmarks = 2 + 10;
 950         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
 951                 timecode_ruler_scale = timecode_show_minutes;
 952                 timecode_mark_modulo = 5;
 953                 timecode_nmarks = 2 + 30;
 954         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
 955                 timecode_ruler_scale = timecode_show_minutes;
 956                 timecode_mark_modulo = 10;
 957                 timecode_nmarks = 2 + 60;
 958         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
 959                 timecode_ruler_scale = timecode_show_minutes;
 960                 timecode_mark_modulo = 30;
 961                 timecode_nmarks = 2 + (60 * 4);
 962         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
 963                 timecode_ruler_scale = timecode_show_hours;
 964                 timecode_mark_modulo = 1;
 965                 timecode_nmarks = 2 + 8;
 966         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
 967                 timecode_ruler_scale = timecode_show_hours;
 968                 timecode_mark_modulo = 1;
 969                 timecode_nmarks = 2 + 24;
 970         } else {
 971
 972                 /* not possible if nframes64_t is a 32 bit quantity */
 973
 974                 timecode_ruler_scale = timecode_show_hours;
 975                 timecode_mark_modulo = 4;
 976                 timecode_nmarks = 2 + 24;
 977         }
 978
 979 }
 980
 981 gint
 982 Editor::metric_get_timecode (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upper*/, gint /*maxchars*/)
 983 {
 984         nframes_t pos;
 985         nframes64_t spacer;
 986         Timecode::Time timecode;
 987         gchar buf[16];
 988         gint n;
 989
 990         if (session == 0) {
 991                 return 0;
 992         }
 993
 994         if (lower > (spacer = (nframes64_t)(128 * Editor::get_current_zoom ()))) {
 995                 lower = lower - spacer;
 996         } else {
 997                 lower = 0;
 998         }
 999
1000         pos = (nframes_t) floor (lower);
1001
1002         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * timecode_nmarks);
1003         switch (timecode_ruler_scale) {
1004         case timecode_show_bits:
1005
1006                 // Find timecode time of this sample (pos) with subframe accuracy
1007                 session->sample_to_timecode(pos, timecode, true /* use_offset */, true /* use_subframes */ );
1008
1009                 for (n = 0; n < timecode_nmarks; n++) {
1010                         session->timecode_to_sample(timecode, pos, true /* use_offset */, true /* use_subframes */ );
1011                         if ((timecode.subframes % timecode_mark_modulo) == 0) {
1012                                 if (timecode.subframes == 0) {
1013                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1014                                         snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1015                                 } else {
1016                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1017                                         snprintf (buf, sizeof(buf), ".%02u", timecode.subframes);
1018                                 }
1019                         } else {
1020                                 snprintf (buf, sizeof(buf)," ");
1021                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1022
1023                         }
1024                         (*marks)[n].label = g_strdup (buf);
1025                         (*marks)[n].position = pos;
1026
1027                         // Increment subframes by one
1028                         Timecode::increment_subframes( timecode, session->config.get_subframes_per_frame() );
1029                 }
1030           break;
1031         case timecode_show_seconds:
1032                 // Find timecode time of this sample (pos)
1033                 session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1034                 // Go to next whole second down
1035                 Timecode::seconds_floor( timecode );
1036
1037                 for (n = 0; n < timecode_nmarks; n++) {
1038                         session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1039                         if ((timecode.seconds % timecode_mark_modulo) == 0) {
1040                                 if (timecode.seconds == 0) {
1041                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1042                                         (*marks)[n].position = pos;
1043                                 } else {
1044                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1045                                         (*marks)[n].position = pos;
1046                                 }
1047                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1048                         } else {
1049                                 snprintf (buf, sizeof(buf)," ");
1050                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1051                                 (*marks)[n].position = pos;
1052
1053                         }
1054                         (*marks)[n].label = g_strdup (buf);
1055                         Timecode::increment_seconds( timecode, session->config.get_subframes_per_frame() );
1056                 }
1057           break;
1058         case timecode_show_minutes:
1059                 // Find timecode time of this sample (pos)
1060                 session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1061                 // Go to next whole minute down
1062                 Timecode::minutes_floor( timecode );
1063
1064                 for (n = 0; n < timecode_nmarks; n++) {
1065                         session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1066                         if ((timecode.minutes % timecode_mark_modulo) == 0) {
1067                                 if (timecode.minutes == 0) {
1068                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1069                                 } else {
1070                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1071                                 }
1072                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1073                         } else {
1074                                 snprintf (buf, sizeof(buf)," ");
1075                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1076
1077                         }
1078                         (*marks)[n].label = g_strdup (buf);
1079                         (*marks)[n].position = pos;
1080                         Timecode::increment_minutes( timecode, session->config.get_subframes_per_frame() );
1081                 }
1082
1083           break;
1084         case timecode_show_hours:
1085                 // Find timecode time of this sample (pos)
1086                 session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1087                 // Go to next whole hour down
1088                 Timecode::hours_floor( timecode );
1089
1090                 for (n = 0; n < timecode_nmarks; n++) {
1091                         session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1092                         if ((timecode.hours % timecode_mark_modulo) == 0) {
1093                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1094                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1095                         } else {
1096                                 snprintf (buf, sizeof(buf)," ");
1097                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1098
1099                         }
1100                         (*marks)[n].label = g_strdup (buf);
1101                         (*marks)[n].position = pos;
1102
1103                         Timecode::increment_hours( timecode, session->config.get_subframes_per_frame() );
1104                 }
1105           break;
1106         case timecode_show_frames:
1107                 // Find timecode time of this sample (pos)
1108                 session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1109                 // Go to next whole frame down
1110                 Timecode::frames_floor( timecode );
1111
1112                 for (n = 0; n < timecode_nmarks; n++) {
1113                         session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1114                         if ((timecode.frames % timecode_mark_modulo) == 0)  {
1115                                 if (timecode.frames == 0) {
1116                                   (*marks)[n].style = GtkCustomRulerMarkMajor;
1117                                 } else {
1118                                   (*marks)[n].style = GtkCustomRulerMarkMinor;
1119                                 }
1120                                 (*marks)[n].position = pos;
1121                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1122                         } else {
1123                                 snprintf (buf, sizeof(buf)," ");
1124                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1125                                 (*marks)[n].position = pos;
1126
1127                         }
1128                         (*marks)[n].label = g_strdup (buf);
1129                         Timecode::increment( timecode, session->config.get_subframes_per_frame() );
1130                 }
1131
1132           break;
1133         }
1134
1135         return timecode_nmarks;
1136 }
1137
1138
1139 void
1140 Editor::compute_bbt_ruler_scale (nframes64_t lower, nframes64_t upper)
1141 {
1142         if (session == 0) {
1143                 return;
1144         }
1145         TempoMap::BBTPointList::iterator i;
1146         BBT_Time lower_beat, upper_beat; // the beats at each end of the ruler
1147
1148         session->bbt_time((jack_nframes_t) lower, lower_beat);
1149         session->bbt_time((jack_nframes_t) upper, upper_beat);
1150         uint32_t beats = 0;
1151
1152         bbt_accent_modulo = 1;
1153         bbt_bar_helper_on = false;
1154         bbt_bars = 0;
1155         bbt_nmarks = 1;
1156
1157         bbt_ruler_scale =  bbt_over;
1158
1159         switch (_snap_type) {
1160         case SnapToAThirdBeat:
1161                 bbt_beat_subdivision = 3;
1162                 break;
1163         case SnapToAQuarterBeat:
1164                 bbt_beat_subdivision = 4;
1165                 break;
1166         case SnapToAEighthBeat:
1167                 bbt_beat_subdivision = 8;
1168                 bbt_accent_modulo = 2;
1169                 break;
1170         case SnapToASixteenthBeat:
1171                 bbt_beat_subdivision = 16;
1172                 bbt_accent_modulo = 4;
1173                 break;
1174         case SnapToAThirtysecondBeat:
1175                 bbt_beat_subdivision = 32;
1176                 bbt_accent_modulo = 8;
1177                 break;
1178         default:
1179                 bbt_beat_subdivision = 4;
1180                 break;
1181         }
1182
1183         if (current_bbt_points == 0 || current_bbt_points->empty()) {
1184                 return;
1185         }
1186
1187         i = current_bbt_points->end();
1188         i--;
1189         if ((*i).beat >= (*current_bbt_points->begin()).beat) {
1190           bbt_bars = (*i).bar - (*current_bbt_points->begin()).bar;
1191         } else {
1192           bbt_bars = (*i).bar - (*current_bbt_points->begin()).bar - 1;
1193         }
1194         beats = current_bbt_points->size() - bbt_bars;
1195
1196         /*Only show the bar helper if there aren't many bars on the screen */
1197         if ((bbt_bars < 2) || (beats < 5)) {
1198                 bbt_bar_helper_on = true;
1199         }
1200
1201         if (bbt_bars > 8192) {
1202           bbt_ruler_scale =  bbt_over;
1203         } else if (bbt_bars > 1024) {
1204           bbt_ruler_scale = bbt_show_64;
1205         } else if (bbt_bars > 256) {
1206           bbt_ruler_scale = bbt_show_16;
1207         } else if (bbt_bars > 64) {
1208           bbt_ruler_scale = bbt_show_4;
1209         } else if (bbt_bars > 10) {
1210           bbt_ruler_scale =  bbt_show_1;
1211         } else if (bbt_bars > 2) {
1212           bbt_ruler_scale =  bbt_show_beats;
1213         } else  if (bbt_bars > 0) {
1214           bbt_ruler_scale =  bbt_show_ticks;
1215         } else {
1216           bbt_ruler_scale =  bbt_show_ticks_detail;
1217         }
1218
1219         if ((bbt_ruler_scale == bbt_show_ticks_detail) && (lower_beat.beats == upper_beat.beats) && (upper_beat.ticks - lower_beat.ticks <= Meter::ticks_per_beat / 4)) {
1220                 bbt_ruler_scale =  bbt_show_ticks_super_detail;
1221         }
1222 }
1223
1224 gint
1225 Editor::metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upper*/, gint /*maxchars*/)
1226 {
1227         if (session == 0) {
1228                 return 0;
1229         }
1230
1231         TempoMap::BBTPointList::iterator i;
1232
1233         char buf[64];
1234         gint  n = 0;
1235         nframes64_t pos;
1236         BBT_Time next_beat;
1237         nframes64_t next_beat_pos;
1238         uint32_t beats = 0;
1239
1240         uint32_t tick = 0;
1241         uint32_t skip;
1242         uint32_t t;
1243         nframes64_t frame_skip;
1244         double frame_skip_error;
1245         double bbt_position_of_helper;
1246         double accumulated_error;
1247         bool i_am_accented = false;
1248         bool helper_active = false;
1249
1250         if (current_bbt_points == 0 || current_bbt_points->empty()) {
1251                 return 0;
1252         }
1253
1254         switch (bbt_ruler_scale) {
1255
1256         case bbt_show_beats:
1257                 beats = current_bbt_points->size();
1258                 bbt_nmarks = beats + 2;
1259
1260                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1261
1262                 (*marks)[0].label = g_strdup(" ");
1263                 (*marks)[0].position = lower;
1264                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1265
1266                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1267                         if  ((*i).type != TempoMap::Beat) {
1268                                 continue;
1269                         }
1270                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1271                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1272                                 (*marks)[0].label = g_strdup (buf);
1273                                 helper_active = true;
1274                         } else {
1275
1276                                 if ((*i).beat == 1) {
1277                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1278                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1279                                 } else if (((*i).beat % 2 == 1)) {
1280                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1281                                         snprintf (buf, sizeof(buf), " ");
1282                                 } else {
1283                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1284                                         snprintf (buf, sizeof(buf), " ");
1285                                 }
1286                                 (*marks)[n].label =  g_strdup (buf);
1287                                 (*marks)[n].position = (*i).frame;
1288                                 n++;
1289                         }
1290                 }
1291                 break;
1292
1293         case bbt_show_ticks:
1294
1295                 beats = current_bbt_points->size();
1296                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1297
1298                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1299                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1300
1301                 (*marks)[0].label = g_strdup(" ");
1302                 (*marks)[0].position = lower;
1303                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1304
1305                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1306                         if  ((*i).type != TempoMap::Beat) {
1307                                 continue;
1308                         }
1309                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1310                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1311                                 (*marks)[0].label = g_strdup (buf);
1312                                 helper_active = true;
1313                         } else {
1314
1315                                 if ((*i).beat == 1) {
1316                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1317                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1318                                 } else {
1319                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1320                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1321                                 }
1322                                 if (((*i).frame < bbt_position_of_helper) && helper_active) {
1323                                         snprintf (buf, sizeof(buf), " ");
1324                                 }
1325                                 (*marks)[n].label =  g_strdup (buf);
1326                                 (*marks)[n].position = (*i).frame;
1327                                 n++;
1328                         }
1329
1330                         /* Add the tick marks */
1331
1332                         /* Find the next beat */
1333                         next_beat.beats = (*i).beat;
1334                         next_beat.bars = (*i).bar;
1335                         next_beat.ticks = 0;
1336
1337                         if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1338                                   next_beat.beats += 1;
1339                         } else {
1340                                   next_beat.bars += 1;
1341                                   next_beat.beats = 1;
1342                         }
1343
1344                         next_beat_pos = session->tempo_map().frame_time(next_beat);
1345
1346                         frame_skip = (nframes64_t) floor (frame_skip_error = (session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1347                         frame_skip_error -= frame_skip;
1348                         skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);
1349
1350                         pos = (*i).frame + frame_skip;
1351                         accumulated_error = frame_skip_error;
1352
1353                         tick = skip;
1354
1355                         for (t = 0; (tick < Meter::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1356
1357                                 if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1358                                         i_am_accented = true;
1359                                 }
1360
1361                                 snprintf (buf, sizeof(buf), " ");
1362                                 (*marks)[n].label = g_strdup (buf);
1363
1364                                 /* Error compensation for float to nframes64_t*/
1365                                 accumulated_error += frame_skip_error;
1366                                 if (accumulated_error > 1) {
1367                                         pos += 1;
1368                                         accumulated_error -= 1.0f;
1369                                 }
1370
1371                                 (*marks)[n].position = pos;
1372
1373                                 if ((bbt_beat_subdivision > 4) && i_am_accented) {
1374                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1375                                 } else {
1376                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1377                                 }
1378                                 i_am_accented = false;
1379                                 n++;
1380                         }
1381                 }
1382
1383           break;
1384
1385         case bbt_show_ticks_detail:
1386
1387                 beats = current_bbt_points->size();
1388                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1389
1390                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1391                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1392
1393                 (*marks)[0].label = g_strdup(" ");
1394                 (*marks)[0].position = lower;
1395                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1396
1397                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1398                         if  ((*i).type != TempoMap::Beat) {
1399                                 continue;
1400                         }
1401                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1402                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1403                                 (*marks)[0].label = g_strdup (buf);
1404                                 helper_active = true;
1405                         } else {
1406
1407                                 if ((*i).beat == 1) {
1408                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1409                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1410                                 } else {
1411                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1412                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1413                                 }
1414                                 if (((*i).frame < bbt_position_of_helper) && helper_active) {
1415                                         snprintf (buf, sizeof(buf), " ");
1416                                 }
1417                                 (*marks)[n].label =  g_strdup (buf);
1418                                 (*marks)[n].position = (*i).frame;
1419                                 n++;
1420                         }
1421
1422                         /* Add the tick marks */
1423
1424                         /* Find the next beat */
1425
1426                         next_beat.beats = (*i).beat;
1427                         next_beat.bars = (*i).bar;
1428
1429                         if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1430                                   next_beat.beats += 1;
1431                         } else {
1432                                   next_beat.bars += 1;
1433                                   next_beat.beats = 1;
1434                         }
1435
1436                         next_beat_pos = session->tempo_map().frame_time(next_beat);
1437
1438                         frame_skip = (nframes64_t) floor (frame_skip_error = (session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1439                         frame_skip_error -= frame_skip;
1440                         skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);
1441
1442                         pos = (*i).frame + frame_skip;
1443                         accumulated_error = frame_skip_error;
1444
1445                         tick = skip;
1446
1447                         for (t = 0; (tick < Meter::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1448
1449                                 if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1450                                         i_am_accented = true;
1451                                 }
1452
1453                                 if (i_am_accented && (pos > bbt_position_of_helper)){
1454                                         snprintf (buf, sizeof(buf), "%" PRIu32, tick);
1455                                 } else {
1456                                         snprintf (buf, sizeof(buf), " ");
1457                                 }
1458
1459                                 (*marks)[n].label = g_strdup (buf);
1460
1461                                 /* Error compensation for float to nframes64_t*/
1462                                 accumulated_error += frame_skip_error;
1463                                 if (accumulated_error > 1) {
1464                                         pos += 1;
1465                                         accumulated_error -= 1.0f;
1466                                 }
1467
1468                                 (*marks)[n].position = pos;
1469
1470                                 if ((bbt_beat_subdivision > 4) && i_am_accented) {
1471                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1472                                 } else {
1473                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1474                                 }
1475                                 i_am_accented = false;
1476                                 n++;
1477                         }
1478                 }
1479
1480           break;
1481
1482         case bbt_show_ticks_super_detail:
1483
1484                 beats = current_bbt_points->size();
1485                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1486
1487                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1488                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1489
1490                 (*marks)[0].label = g_strdup(" ");
1491                 (*marks)[0].position = lower;
1492                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1493
1494                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1495                         if  ((*i).type != TempoMap::Beat) {
1496                                   continue;
1497                         }
1498                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1499                                   snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1500                                   (*marks)[0].label = g_strdup (buf);
1501                                   helper_active = true;
1502                         } else {
1503
1504                                   if ((*i).beat == 1) {
1505                                           (*marks)[n].style = GtkCustomRulerMarkMajor;
1506                                           snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1507                                   } else {
1508                                           (*marks)[n].style = GtkCustomRulerMarkMinor;
1509                                           snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1510                                   }
1511                                   if (((*i).frame < bbt_position_of_helper) && helper_active) {
1512                                           snprintf (buf, sizeof(buf), " ");
1513                                   }
1514                                   (*marks)[n].label =  g_strdup (buf);
1515                                   (*marks)[n].position = (*i).frame;
1516                                   n++;
1517                         }
1518
1519                         /* Add the tick marks */
1520
1521                         /* Find the next beat */
1522
1523                         next_beat.beats = (*i).beat;
1524                         next_beat.bars = (*i).bar;
1525
1526                         if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1527                                   next_beat.beats += 1;
1528                         } else {
1529                                   next_beat.bars += 1;
1530                                   next_beat.beats = 1;
1531                         }
1532
1533                         next_beat_pos = session->tempo_map().frame_time(next_beat);
1534
1535                         frame_skip = (nframes64_t) floor (frame_skip_error = (session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1536                         frame_skip_error -= frame_skip;
1537                         skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);
1538
1539                         pos = (*i).frame + frame_skip;
1540                         accumulated_error = frame_skip_error;
1541
1542                         tick = skip;
1543
1544                         for (t = 0; (tick < Meter::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1545
1546                                   if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1547                                           i_am_accented = true;
1548                                   }
1549
1550                                   if (pos > bbt_position_of_helper) {
1551                                           snprintf (buf, sizeof(buf), "%" PRIu32, tick);
1552                                   } else {
1553                                           snprintf (buf, sizeof(buf), " ");
1554                                   }
1555
1556                                   (*marks)[n].label = g_strdup (buf);
1557
1558                                   /* Error compensation for float to nframes64_t*/
1559                                   accumulated_error += frame_skip_error;
1560                                   if (accumulated_error > 1) {
1561                                           pos += 1;
1562                                           accumulated_error -= 1.0f;
1563                                   }
1564
1565                                   (*marks)[n].position = pos;
1566
1567                                   if ((bbt_beat_subdivision > 4) && i_am_accented) {
1568                                           (*marks)[n].style = GtkCustomRulerMarkMinor;
1569                                   } else {
1570                                           (*marks)[n].style = GtkCustomRulerMarkMicro;
1571                                   }
1572                                   i_am_accented = false;
1573                                   n++;
1574                         }
1575                 }
1576
1577           break;
1578
1579         case bbt_over:
1580                         bbt_nmarks = 1;
1581                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1582                         snprintf (buf, sizeof(buf), "cannot handle %" PRIu32 " bars", bbt_bars );
1583                         (*marks)[0].style = GtkCustomRulerMarkMajor;
1584                         (*marks)[0].label = g_strdup (buf);
1585                         (*marks)[0].position = lower;
1586                         n = 1;
1587
1588           break;
1589
1590         case bbt_show_64:
1591                         bbt_nmarks = (gint) (bbt_bars / 64) + 1;
1592                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1593                         for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; i++) {
1594                                 if ((*i).type == TempoMap::Bar)  {
1595                                         if ((*i).bar % 64 == 1) {
1596                                                 if ((*i).bar % 256 == 1) {
1597                                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1598                                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1599                                                 } else {
1600                                                         snprintf (buf, sizeof(buf), " ");
1601                                                         if ((*i).bar % 256 == 129)  {
1602                                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1603                                                         } else {
1604                                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1605                                                         }
1606                                                 }
1607                                                 (*marks)[n].label = g_strdup (buf);
1608                                                 (*marks)[n].position = (*i).frame;
1609                                                 n++;
1610                                         }
1611                                 }
1612                         }
1613                         break;
1614
1615         case bbt_show_16:
1616                 bbt_nmarks = (bbt_bars / 16) + 1;
1617                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1618                 for (n = 0,  i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; i++) {
1619                         if ((*i).type == TempoMap::Bar)  {
1620                           if ((*i).bar % 16 == 1) {
1621                                 if ((*i).bar % 64 == 1) {
1622                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1623                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1624                                 } else {
1625                                         snprintf (buf, sizeof(buf), " ");
1626                                         if ((*i).bar % 64 == 33)  {
1627                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1628                                         } else {
1629                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1630                                         }
1631                                 }
1632                                 (*marks)[n].label = g_strdup (buf);
1633                                 (*marks)[n].position = (*i).frame;
1634                                 n++;
1635                           }
1636                         }
1637                 }
1638           break;
1639
1640         case bbt_show_4:
1641                 bbt_nmarks = (bbt_bars / 4) + 1;
1642                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1643                 for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; ++i) {
1644                         if ((*i).type == TempoMap::Bar)  {
1645                           if ((*i).bar % 4 == 1) {
1646                                 if ((*i).bar % 16 == 1) {
1647                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1648                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1649                                 } else {
1650                                         snprintf (buf, sizeof(buf), " ");
1651                                         if ((*i).bar % 16 == 9)  {
1652                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1653                                         } else {
1654                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1655                                         }
1656                                 }
1657                                 (*marks)[n].label = g_strdup (buf);
1658                                 (*marks)[n].position = (*i).frame;
1659                                 n++;
1660                           }
1661                         }
1662                 }
1663           break;
1664
1665         case bbt_show_1:
1666   //    default:
1667                 bbt_nmarks = bbt_bars + 2;
1668                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks );
1669                 for (n = 0,  i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; i++) {
1670                         if ((*i).type == TempoMap::Bar)  {
1671                           if ((*i).bar % 4 == 1) {
1672                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1673                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1674                           } else {
1675                                 snprintf (buf, sizeof(buf), " ");
1676                                 if ((*i).bar % 4 == 3)  {
1677                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1678                                 } else {
1679                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1680                                 }
1681                           }
1682                         (*marks)[n].label = g_strdup (buf);
1683                         (*marks)[n].position = (*i).frame;
1684                         n++;
1685                         }
1686                 }
1687
1688         break;
1689
1690         }
1691
1692         return n; //return the actual number of marks made, since we might have skipped some from fractional time signatures
1693
1694 }
1695
1696 gint
1697 Editor::metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint /*maxchars*/)
1698 {
1699         nframes64_t mark_interval;
1700         nframes64_t pos;
1701         nframes64_t ilower = (nframes64_t) floor (lower);
1702         nframes64_t iupper = (nframes64_t) floor (upper);
1703         gchar buf[16];
1704         gint nmarks;
1705         gint n;
1706
1707         if (session == 0) {
1708                 return 0;
1709         }
1710
1711         mark_interval = (iupper - ilower) / 5;
1712         if (mark_interval > session->frame_rate()) {
1713                 mark_interval -= mark_interval % session->frame_rate();
1714         } else {
1715                 mark_interval = session->frame_rate() / (session->frame_rate() / mark_interval ) ;
1716         }
1717         nmarks = 5;
1718         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1719         for (n = 0, pos = ilower; n < nmarks; pos += mark_interval, ++n) {
1720                 snprintf (buf, sizeof(buf), "%" PRIi64, pos);
1721                 (*marks)[n].label = g_strdup (buf);
1722                 (*marks)[n].position = pos;
1723                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1724         }
1725
1726         return nmarks;
1727 }
1728
1729 static void
1730 sample_to_clock_parts ( nframes64_t sample,
1731                         nframes64_t sample_rate,
1732                         long *hrs_p,
1733                         long *mins_p,
1734                         long *secs_p,
1735                         long *millisecs_p)
1736
1737 {
1738         nframes64_t left;
1739         long hrs;
1740         long mins;
1741         long secs;
1742         long millisecs;
1743
1744         left = sample;
1745         hrs = left / (sample_rate * 60 * 60);
1746         left -= hrs * sample_rate * 60 * 60;
1747         mins = left / (sample_rate * 60);
1748         left -= mins * sample_rate * 60;
1749         secs = left / sample_rate;
1750         left -= secs * sample_rate;
1751         millisecs = left * 1000 / sample_rate;
1752
1753         *millisecs_p = millisecs;
1754         *secs_p = secs;
1755         *mins_p = mins;
1756         *hrs_p = hrs;
1757
1758         return;
1759 }
1760
1761 void
1762 Editor::set_minsec_ruler_scale (gdouble lower, gdouble upper)
1763 {
1764         nframes64_t range;
1765         nframes64_t fr;
1766         nframes64_t spacer;
1767
1768         if (session == 0) {
1769                 return;
1770         }
1771
1772         fr = session->frame_rate();
1773
1774         /* to prevent 'flashing' */
1775         if (lower > (spacer = (nframes64_t)(128 * Editor::get_current_zoom ()))) {
1776                 lower -= spacer;
1777         } else {
1778                 lower = 0;
1779         }
1780         upper += spacer;
1781         range = (nframes64_t) (upper - lower);
1782
1783         if (range <  (fr / 50)) {
1784                 minsec_mark_interval =  fr / 1000; /* show 1/1000 seconds */
1785                 minsec_ruler_scale = minsec_show_frames;
1786                 minsec_mark_modulo = 10;
1787         } else if (range <= (fr / 10)) { /* 0-0.1 second */
1788                 minsec_mark_interval = fr / 1000; /* show 1/1000 seconds */
1789                 minsec_ruler_scale = minsec_show_frames;
1790                 minsec_mark_modulo = 10;
1791         } else if (range <= (fr / 2)) { /* 0-0.5 second */
1792                 minsec_mark_interval = fr / 100;  /* show 1/100 seconds */
1793                 minsec_ruler_scale = minsec_show_frames;
1794                 minsec_mark_modulo = 100;
1795         } else if (range <= fr) { /* 0-1 second */
1796                 minsec_mark_interval = fr / 10;  /* show 1/10 seconds */
1797                 minsec_ruler_scale = minsec_show_frames;
1798                 minsec_mark_modulo = 200;
1799         } else if (range <= 2 * fr) { /* 1-2 seconds */
1800                 minsec_mark_interval = fr / 10; /* show 1/10 seconds */
1801                 minsec_ruler_scale = minsec_show_frames;
1802                 minsec_mark_modulo = 500;
1803         } else if (range <= 8 * fr) { /* 2-5 seconds */
1804                 minsec_mark_interval =  fr / 5; /* show 2 seconds */
1805                 minsec_ruler_scale = minsec_show_frames;
1806                 minsec_mark_modulo = 1000;
1807         } else if (range <= 16 * fr) { /* 8-16 seconds */
1808                 minsec_mark_interval =  fr; /* show 1 seconds */
1809                 minsec_ruler_scale = minsec_show_seconds;
1810                 minsec_mark_modulo = 2;
1811         } else if (range <= 30 * fr) { /* 10-30 seconds */
1812                 minsec_mark_interval =  fr; /* show 1 seconds */
1813                 minsec_ruler_scale = minsec_show_seconds;
1814                 minsec_mark_modulo = 5;
1815         } else if (range <= 60 * fr) { /* 30-60 seconds */
1816                 minsec_mark_interval = fr; /* show 1 seconds */
1817                 minsec_ruler_scale = minsec_show_seconds;
1818                 minsec_mark_modulo = 5;
1819         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
1820                 minsec_mark_interval = 5 * fr; /* show 5 seconds */
1821                 minsec_ruler_scale = minsec_show_seconds;
1822                 minsec_mark_modulo = 3;
1823         } else if (range <= 4 * 60 * fr) { /* 4 minutes */
1824                 minsec_mark_interval = 5 * fr; /* show 10 seconds */
1825                 minsec_ruler_scale = minsec_show_seconds;
1826                 minsec_mark_modulo = 30;
1827         } else if (range <= 10 * 60 * fr) { /* 10 minutes */
1828                 minsec_mark_interval = 30 * fr; /* show 30 seconds */
1829                 minsec_ruler_scale = minsec_show_seconds;
1830                 minsec_mark_modulo = 120;
1831         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
1832                 minsec_mark_interval =  60 * fr; /* show 1 minute */
1833                 minsec_ruler_scale = minsec_show_minutes;
1834                 minsec_mark_modulo = 5;
1835         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
1836                 minsec_mark_interval = 2 * 60 * fr; /* show 2 minutes */
1837                 minsec_ruler_scale = minsec_show_minutes;
1838                 minsec_mark_modulo = 10;
1839         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
1840                 minsec_mark_interval = 5 * 60 * fr; /* show 10 minutes */
1841                 minsec_ruler_scale = minsec_show_minutes;
1842                 minsec_mark_modulo = 30;
1843         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
1844                 minsec_mark_interval = 20 * 60 * fr; /* show 20 minutes */
1845                 minsec_ruler_scale = minsec_show_minutes;
1846                 minsec_mark_modulo = 60;
1847         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
1848                 minsec_mark_interval =  60 * 60 * fr; /* show 60 minutes */
1849                 minsec_ruler_scale = minsec_show_hours;
1850                 minsec_mark_modulo = 2;
1851         } else {
1852
1853                 /* not possible if nframes64_t is a 32 bit quantity */
1854
1855                 minsec_mark_interval = 4 * 60 * 60 * fr; /* show 4 hrs */
1856         }
1857         minsec_nmarks = 2 + (range / minsec_mark_interval);
1858 }
1859
1860 gint
1861 Editor::metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upper*/, gint /*maxchars*/)
1862 {
1863         nframes64_t pos;
1864         nframes64_t spacer;
1865         long hrs, mins, secs, millisecs;
1866         gchar buf[16];
1867         gint n;
1868
1869         if (session == 0) {
1870                 return 0;
1871         }
1872
1873         /* to prevent 'flashing' */
1874         if (lower > (spacer = (nframes64_t)(128 * Editor::get_current_zoom ()))) {
1875                 lower = lower - spacer;
1876         } else {
1877                 lower = 0;
1878         }
1879
1880         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * minsec_nmarks);
1881         pos = ((((nframes64_t) floor(lower)) + (minsec_mark_interval/2))/minsec_mark_interval) * minsec_mark_interval;
1882         switch (minsec_ruler_scale) {
1883         case minsec_show_seconds:
1884                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1885                         sample_to_clock_parts (pos, session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1886                         if (secs % minsec_mark_modulo == 0) {
1887                                 if (secs == 0) {
1888                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1889                                 } else {
1890                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1891                                 }
1892                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1893                         } else {
1894                                 snprintf (buf, sizeof(buf), " ");
1895                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1896                         }
1897                         (*marks)[n].label = g_strdup (buf);
1898                         (*marks)[n].position = pos;
1899                 }
1900           break;
1901         case minsec_show_minutes:
1902                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1903                         sample_to_clock_parts (pos, session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1904                         if (mins % minsec_mark_modulo == 0) {
1905                                 if (mins == 0) {
1906                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1907                                 } else {
1908                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1909                                 }
1910                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1911                         } else {
1912                                 snprintf (buf, sizeof(buf), " ");
1913                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1914                         }
1915                         (*marks)[n].label = g_strdup (buf);
1916                         (*marks)[n].position = pos;
1917                 }
1918           break;
1919         case minsec_show_hours:
1920                  for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1921                         sample_to_clock_parts (pos, session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1922                         if (hrs % minsec_mark_modulo == 0) {
1923                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1924                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1925                         } else {
1926                                 snprintf (buf, sizeof(buf), " ");
1927                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1928                         }
1929                         (*marks)[n].label = g_strdup (buf);
1930                         (*marks)[n].position = pos;
1931                 }
1932               break;
1933         case minsec_show_frames:
1934                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1935                         sample_to_clock_parts (pos, session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1936                         if (millisecs % minsec_mark_modulo == 0) {
1937                                 if (secs == 0) {
1938                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1939                                 } else {
1940                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1941                                 }
1942                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1943                         } else {
1944                                 snprintf (buf, sizeof(buf), " ");
1945                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1946                         }
1947                         (*marks)[n].label = g_strdup (buf);
1948                         (*marks)[n].position = pos;
1949                 }
1950           break;
1951         }
1952
1953         return minsec_nmarks;
1954 }