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 #ifdef WAF_BUILD
  21 #include "gtk2ardour-config.h"
  22 #endif
  23
  24 #include <cstdio> // for sprintf, grrr
  25 #include <cmath>
  26 #include <inttypes.h>
  27
  28 #include <string>
  29
  30 #include <gtk/gtkaction.h>
  31
  32 #include "ardour/session.h"
  33 #include "ardour/tempo.h"
  34 #include "ardour/profile.h"
  35 #include <gtkmm2ext/gtk_ui.h>
  36
  37 #include "editor.h"
  38 #include "editing.h"
  39 #include "actions.h"
  40 #include "gtk-custom-hruler.h"
  41 #include "gui_thread.h"
  42 #include "time_axis_view.h"
  43 #include "editor_drag.h"
  44 #include "editor_cursors.h"
  45
  46 #include "i18n.h"
  47
  48 using namespace ARDOUR;
  49 using namespace PBD;
  50 using namespace Gtk;
  51 using namespace Editing;
  52
  53 Editor *Editor::ruler_editor;
  54
  55 /* the order here must match the "metric" enums in editor.h */
  56
  57 GtkCustomMetric Editor::ruler_metrics[4] = {
  58         {1, Editor::_metric_get_timecode },
  59         {1, Editor::_metric_get_bbt },
  60         {1, Editor::_metric_get_frames },
  61         {1, Editor::_metric_get_minsec }
  62 };
  63
  64 void
  65 Editor::initialize_rulers ()
  66 {
  67         ruler_editor = this;
  68         ruler_grabbed_widget = 0;
  69
  70         _ruler_separator = new Gtk::HSeparator();
  71         _ruler_separator->set_size_request(-1, 2);
  72         _ruler_separator->set_name("TimebarPadding");
  73         _ruler_separator->show();
  74
  75         _minsec_ruler = gtk_custom_hruler_new ();
  76         minsec_ruler = Glib::wrap (_minsec_ruler);
  77         minsec_ruler->set_name ("MinSecRuler");
  78         minsec_ruler->set_size_request (-1, (int)timebar_height);
  79         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_minsec_ruler), &ruler_metrics[ruler_metric_minsec]);
  80         minsec_ruler->hide ();
  81         minsec_ruler->set_no_show_all();
  82
  83         _timecode_ruler = gtk_custom_hruler_new ();
  84         timecode_ruler = Glib::wrap (_timecode_ruler);
  85         timecode_ruler->set_name ("TimecodeRuler");
  86         timecode_ruler->set_size_request (-1, (int)timebar_height);
  87         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_timecode_ruler), &ruler_metrics[ruler_metric_timecode]);
  88         timecode_ruler->hide ();
  89         timecode_ruler->set_no_show_all();
  90         timecode_nmarks = 0;
  91
  92         _bbt_ruler = gtk_custom_hruler_new ();
  93         bbt_ruler = Glib::wrap (_bbt_ruler);
  94         bbt_ruler->set_name ("BBTRuler");
  95         bbt_ruler->set_size_request (-1, (int)timebar_height);
  96         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_bbt_ruler), &ruler_metrics[ruler_metric_bbt]);
  97         bbt_ruler->hide ();
  98         bbt_ruler->set_no_show_all();
  99         bbt_nmarks = 0;
 100
 101         _frames_ruler = gtk_custom_hruler_new ();
 102         frames_ruler = Glib::wrap (_frames_ruler);
 103         frames_ruler->set_name ("FramesRuler");
 104         frames_ruler->set_size_request (-1, (int)timebar_height);
 105         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_frames_ruler), &ruler_metrics[ruler_metric_frames]);
 106         frames_ruler->hide ();
 107         frames_ruler->set_no_show_all();
 108
 109         _bbt_ruler = gtk_custom_hruler_new ();
 110         bbt_ruler = Glib::wrap (_bbt_ruler);
 111         bbt_ruler->set_name ("BBTRuler");
 112         bbt_ruler->set_size_request (-1, (int)timebar_height);
 113         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_bbt_ruler), &ruler_metrics[ruler_metric_bbt]);
 114         bbt_ruler->hide ();
 115         bbt_ruler->set_no_show_all();
 116         minsec_ruler->hide ();
 117         minsec_ruler->set_no_show_all();
 118         minsec_nmarks = 0;
 119
 120         using namespace Box_Helpers;
 121         BoxList & ruler_lab_children =  ruler_label_vbox.children();
 122         BoxList & ruler_children =  time_canvas_vbox.children();
 123         BoxList & lab_children =  time_button_vbox.children();
 124
 125         BoxList::iterator canvaspos = ruler_children.begin();
 126
 127         lab_children.push_back (Element(meter_label, PACK_SHRINK, PACK_START));
 128         lab_children.push_back (Element(tempo_label, PACK_SHRINK, PACK_START));
 129         lab_children.push_back (Element(range_mark_label, PACK_SHRINK, PACK_START));
 130         lab_children.push_back (Element(transport_mark_label, PACK_SHRINK, PACK_START));
 131         lab_children.push_back (Element(cd_mark_label, PACK_SHRINK, PACK_START));
 132         lab_children.push_back (Element(mark_label, PACK_SHRINK, PACK_START));
 133
 134         ruler_lab_children.push_back (Element(minsec_label, PACK_SHRINK, PACK_START));
 135         ruler_children.insert (canvaspos, Element(*minsec_ruler, PACK_SHRINK, PACK_START));
 136         ruler_lab_children.push_back (Element(timecode_label, PACK_SHRINK, PACK_START));
 137         ruler_children.insert (canvaspos, Element(*timecode_ruler, PACK_SHRINK, PACK_START));
 138         ruler_lab_children.push_back (Element(frame_label, PACK_SHRINK, PACK_START));
 139         ruler_children.insert (canvaspos, Element(*frames_ruler, PACK_SHRINK, PACK_START));
 140         ruler_lab_children.push_back (Element(bbt_label, PACK_SHRINK, PACK_START));
 141         ruler_children.insert (canvaspos, Element(*bbt_ruler, PACK_SHRINK, PACK_START));
 142
 143         timecode_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 144         bbt_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 145         frames_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 146         minsec_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 147
 148         timecode_ruler->signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_release));
 149         bbt_ruler->signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_release));
 150         frames_ruler->signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_release));
 151         minsec_ruler->signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_release));
 152
 153         timecode_ruler->signal_button_press_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_press));
 154         bbt_ruler->signal_button_press_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_press));
 155         frames_ruler->signal_button_press_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_press));
 156         minsec_ruler->signal_button_press_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_press));
 157
 158         timecode_ruler->signal_motion_notify_event().connect (sigc::mem_fun(*this, &Editor::ruler_mouse_motion));
 159         bbt_ruler->signal_motion_notify_event().connect (sigc::mem_fun(*this, &Editor::ruler_mouse_motion));
 160         frames_ruler->signal_motion_notify_event().connect (sigc::mem_fun(*this, &Editor::ruler_mouse_motion));
 161         minsec_ruler->signal_motion_notify_event().connect (sigc::mem_fun(*this, &Editor::ruler_mouse_motion));
 162
 163         timecode_ruler->signal_scroll_event().connect (sigc::mem_fun(*this, &Editor::ruler_scroll));
 164         bbt_ruler->signal_scroll_event().connect (sigc::mem_fun(*this, &Editor::ruler_scroll));
 165         frames_ruler->signal_scroll_event().connect (sigc::mem_fun(*this, &Editor::ruler_scroll));
 166         minsec_ruler->signal_scroll_event().connect (sigc::mem_fun(*this, &Editor::ruler_scroll));
 167
 168         visible_timebars = 0; /*this will be changed below */
 169         canvas_timebars_vsize = 0;
 170 }
 171
 172 bool
 173 Editor::ruler_scroll (GdkEventScroll* event)
 174 {
 175         framepos_t xdelta;
 176         int direction = event->direction;
 177         bool handled = false;
 178
 179         switch (direction) {
 180         case GDK_SCROLL_UP:
 181                 temporal_zoom_step (true);
 182                 handled = true;
 183                 break;
 184
 185         case GDK_SCROLL_DOWN:
 186                 temporal_zoom_step (false);
 187                 handled = true;
 188                 break;
 189
 190         case GDK_SCROLL_LEFT:
 191                 xdelta = (current_page_frames() / 2);
 192                 if (leftmost_frame > xdelta) {
 193                         reset_x_origin (leftmost_frame - xdelta);
 194                 } else {
 195                         reset_x_origin (0);
 196                 }
 197                 handled = true;
 198                 break;
 199
 200         case GDK_SCROLL_RIGHT:
 201                 xdelta = (current_page_frames() / 2);
 202                 if (max_framepos - xdelta > leftmost_frame) {
 203                         reset_x_origin (leftmost_frame + xdelta);
 204                 } else {
 205                         reset_x_origin (max_framepos - current_page_frames());
 206                 }
 207                 handled = true;
 208                 break;
 209
 210         default:
 211                 /* what? */
 212                 break;
 213         }
 214
 215         return handled;
 216 }
 217
 218
 219 gint
 220 Editor::ruler_button_press (GdkEventButton* ev)
 221 {
 222         if (_session == 0) {
 223                 return FALSE;
 224         }
 225
 226         // jlc: grab ev->window ?
 227         //Gtk::Main::grab_add (*minsec_ruler);
 228         Widget * grab_widget = 0;
 229
 230         if (timecode_ruler->is_realized() && ev->window == timecode_ruler->get_window()->gobj()) {
 231                 grab_widget = timecode_ruler;
 232         } else if (bbt_ruler->is_realized() && ev->window == bbt_ruler->get_window()->gobj()) {
 233                 grab_widget = bbt_ruler;
 234         } else if (frames_ruler->is_realized() && ev->window == frames_ruler->get_window()->gobj()) {
 235                 grab_widget = frames_ruler;
 236         } else if (minsec_ruler->is_realized() && ev->window == minsec_ruler->get_window()->gobj()) {
 237                 grab_widget = minsec_ruler;
 238         }
 239
 240         if (grab_widget) {
 241                 grab_widget->add_modal_grab ();
 242                 ruler_grabbed_widget = grab_widget;
 243         }
 244
 245         if (ev->button == 1) {
 246                 // Since we will locate the playhead on button release, cancel any running
 247                 // auditions.
 248                 if (_session->is_auditioning()) {
 249                         _session->cancel_audition ();
 250                 }
 251
 252                 /* playhead cursor */
 253                 _drags->set (new CursorDrag (this, &playhead_cursor->canvas_item, false), reinterpret_cast<GdkEvent *> (ev));
 254                 _dragging_playhead = true;
 255         }
 256
 257         return TRUE;
 258 }
 259
 260 gint
 261 Editor::ruler_button_release (GdkEventButton* ev)
 262 {
 263         if (_session == 0) {
 264                 return FALSE;
 265         }
 266
 267         gint x,y;
 268         Gdk::ModifierType state;
 269
 270         if (_drags->active ()) {
 271                 _drags->end_grab (reinterpret_cast<GdkEvent*> (ev));
 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                 framepos_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 (_drags->active ()) {
 316                 _drags->motion_handler (reinterpret_cast<GdkEvent*> (ev), false);
 317         }
 318
 319         return TRUE;
 320 }
 321
 322
 323 void
 324 Editor::popup_ruler_menu (framepos_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-frames-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_frames_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_frames_action->set_active (true);
 476                         } else {
 477                                 ruler_frames_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_frames_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         compute_fixed_ruler_scale ();
 769         update_fixed_rulers();
 770         redisplay_tempo (false);
 771
 772         /* Changing ruler visibility means that any lines on markers might need updating */
 773         for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
 774                 i->second->setup_lines ();
 775         }
 776 }
 777
 778 void
 779 Editor::update_just_timecode ()
 780 {
 781         ENSURE_GUI_THREAD (*this, &Editor::update_just_timecode)
 782
 783         if (_session == 0) {
 784                 return;
 785         }
 786
 787         framepos_t rightmost_frame = leftmost_frame + current_page_frames();
 788
 789         if (ruler_timecode_action->get_active()) {
 790                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_timecode_ruler), leftmost_frame, rightmost_frame,
 791                                             leftmost_frame, _session->current_end_frame());
 792         }
 793 }
 794
 795 void
 796 Editor::compute_fixed_ruler_scale ()
 797 {
 798         if (_session == 0) {
 799                 return;
 800         }
 801
 802         if (ruler_timecode_action->get_active()) {
 803                 set_timecode_ruler_scale (leftmost_frame, leftmost_frame + current_page_frames());
 804         }
 805
 806         if (ruler_minsec_action->get_active()) {
 807                 set_minsec_ruler_scale (leftmost_frame, leftmost_frame + current_page_frames());
 808         }
 809
 810         if (ruler_frames_action->get_active()) {
 811                 set_frames_ruler_scale (leftmost_frame, leftmost_frame + current_page_frames());
 812         }
 813 }
 814
 815 void
 816 Editor::update_fixed_rulers ()
 817 {
 818         framepos_t rightmost_frame;
 819
 820         if (_session == 0) {
 821                 return;
 822         }
 823
 824         ruler_metrics[ruler_metric_timecode].units_per_pixel = frames_per_unit;
 825         ruler_metrics[ruler_metric_frames].units_per_pixel = frames_per_unit;
 826         ruler_metrics[ruler_metric_minsec].units_per_pixel = frames_per_unit;
 827
 828         rightmost_frame = leftmost_frame + current_page_frames();
 829
 830         /* these force a redraw, which in turn will force execution of the metric callbacks
 831            to compute the relevant ticks to display.
 832         */
 833
 834         if (ruler_timecode_action->get_active()) {
 835                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_timecode_ruler), leftmost_frame, rightmost_frame,
 836                                             leftmost_frame, _session->current_end_frame());
 837         }
 838
 839         if (ruler_frames_action->get_active()) {
 840                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_frames_ruler), leftmost_frame, rightmost_frame,
 841                                             leftmost_frame, _session->current_end_frame());
 842         }
 843
 844         if (ruler_minsec_action->get_active()) {
 845                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_minsec_ruler), leftmost_frame, rightmost_frame,
 846                                             leftmost_frame, _session->current_end_frame());
 847         }
 848 }
 849
 850 void
 851 Editor::update_tempo_based_rulers ()
 852 {
 853         if (_session == 0) {
 854                 return;
 855         }
 856
 857         ruler_metrics[ruler_metric_bbt].units_per_pixel = frames_per_unit;
 858
 859         if (ruler_bbt_action->get_active()) {
 860                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_bbt_ruler), leftmost_frame, leftmost_frame+current_page_frames(),
 861                                             leftmost_frame, _session->current_end_frame());
 862         }
 863 }
 864
 865 /* Mark generation */
 866
 867 gint
 868 Editor::_metric_get_timecode (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 869 {
 870         return ruler_editor->metric_get_timecode (marks, lower, upper, maxchars);
 871 }
 872
 873 gint
 874 Editor::_metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 875 {
 876         return ruler_editor->metric_get_bbt (marks, lower, upper, maxchars);
 877 }
 878
 879 gint
 880 Editor::_metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 881 {
 882         return ruler_editor->metric_get_frames (marks, lower, upper, maxchars);
 883 }
 884
 885 gint
 886 Editor::_metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 887 {
 888         return ruler_editor->metric_get_minsec (marks, lower, upper, maxchars);
 889 }
 890
 891 void
 892 Editor::set_timecode_ruler_scale (framepos_t lower, framepos_t upper)
 893 {
 894         framepos_t spacer;
 895         framepos_t fr;
 896
 897         if (_session == 0) {
 898                 return;
 899         }
 900
 901         fr = _session->frame_rate();
 902
 903         if (lower > (spacer = (framepos_t) (128 * Editor::get_current_zoom ()))) {
 904                 lower = lower - spacer;
 905         } else {
 906                 lower = 0;
 907         }
 908         upper = upper + spacer;
 909         framecnt_t const range = upper - lower;
 910
 911         if (range < (2 * _session->frames_per_timecode_frame())) { /* 0 - 2 frames */
 912                 timecode_ruler_scale = timecode_show_bits;
 913                 timecode_mark_modulo = 20;
 914                 timecode_nmarks = 2 + (2 * _session->config.get_subframes_per_frame());
 915         } else if (range <= (fr / 4)) { /* 2 frames - 0.250 second */
 916                 timecode_ruler_scale = timecode_show_frames;
 917                 timecode_mark_modulo = 1;
 918                 timecode_nmarks = 2 + (range / (framepos_t)_session->frames_per_timecode_frame());
 919         } else if (range <= (fr / 2)) { /* 0.25-0.5 second */
 920                 timecode_ruler_scale = timecode_show_frames;
 921                 timecode_mark_modulo = 2;
 922                 timecode_nmarks = 2 + (range / (framepos_t)_session->frames_per_timecode_frame());
 923         } else if (range <= fr) { /* 0.5-1 second */
 924                 timecode_ruler_scale = timecode_show_frames;
 925                 timecode_mark_modulo = 5;
 926                 timecode_nmarks = 2 + (range / (framepos_t)_session->frames_per_timecode_frame());
 927         } else if (range <= 2 * fr) { /* 1-2 seconds */
 928                 timecode_ruler_scale = timecode_show_frames;
 929                 timecode_mark_modulo = 10;
 930                 timecode_nmarks = 2 + (range / (framepos_t)_session->frames_per_timecode_frame());
 931         } else if (range <= 8 * fr) { /* 2-8 seconds */
 932                 timecode_ruler_scale = timecode_show_seconds;
 933                 timecode_mark_modulo = 1;
 934                 timecode_nmarks = 2 + (range / fr);
 935         } else if (range <= 16 * fr) { /* 8-16 seconds */
 936                 timecode_ruler_scale = timecode_show_seconds;
 937                 timecode_mark_modulo = 2;
 938                 timecode_nmarks = 2 + (range / fr);
 939         } else if (range <= 30 * fr) { /* 16-30 seconds */
 940                 timecode_ruler_scale = timecode_show_seconds;
 941                 timecode_mark_modulo = 5;
 942                 timecode_nmarks = 2 + (range / fr);
 943         } else if (range <= 60 * fr) { /* 30-60 seconds */
 944                 timecode_ruler_scale = timecode_show_seconds;
 945                 timecode_mark_modulo = 5;
 946                 timecode_nmarks = 2 + (range / fr);
 947         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
 948                 timecode_ruler_scale = timecode_show_seconds;
 949                 timecode_mark_modulo = 15;
 950                 timecode_nmarks = 2 + (range / fr);
 951         } else if (range <= 4 * 60 * fr) { /* 2-4 minutes */
 952                 timecode_ruler_scale = timecode_show_seconds;
 953                 timecode_mark_modulo = 30;
 954                 timecode_nmarks = 2 + (range / fr);
 955         } else if (range <= 10 * 60 * fr) { /* 4-10 minutes */
 956                 timecode_ruler_scale = timecode_show_minutes;
 957                 timecode_mark_modulo = 2;
 958                 timecode_nmarks = 2 + 10;
 959         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
 960                 timecode_ruler_scale = timecode_show_minutes;
 961                 timecode_mark_modulo = 5;
 962                 timecode_nmarks = 2 + 30;
 963         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
 964                 timecode_ruler_scale = timecode_show_minutes;
 965                 timecode_mark_modulo = 10;
 966                 timecode_nmarks = 2 + 60;
 967         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
 968                 timecode_ruler_scale = timecode_show_minutes;
 969                 timecode_mark_modulo = 30;
 970                 timecode_nmarks = 2 + (60 * 4);
 971         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
 972                 timecode_ruler_scale = timecode_show_hours;
 973                 timecode_mark_modulo = 1;
 974                 timecode_nmarks = 2 + 8;
 975         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
 976                 timecode_ruler_scale = timecode_show_hours;
 977                 timecode_mark_modulo = 1;
 978                 timecode_nmarks = 2 + 24;
 979         } else {
 980
 981                 /* not possible if framepos_t is a 32 bit quantity */
 982
 983                 timecode_ruler_scale = timecode_show_hours;
 984                 timecode_mark_modulo = 4;
 985                 timecode_nmarks = 2 + 24;
 986         }
 987
 988 }
 989
 990 gint
 991 Editor::metric_get_timecode (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upper*/, gint /*maxchars*/)
 992 {
 993         framepos_t pos;
 994         framecnt_t spacer;
 995         Timecode::Time timecode;
 996         gchar buf[16];
 997         gint n;
 998
 999         if (_session == 0) {
1000                 return 0;
1001         }
1002
1003         if (lower > (spacer = (framecnt_t)(128 * Editor::get_current_zoom ()))) {
1004                 lower = lower - spacer;
1005         } else {
1006                 lower = 0;
1007         }
1008
1009         pos = (framecnt_t) floor (lower);
1010
1011         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * timecode_nmarks);
1012         switch (timecode_ruler_scale) {
1013         case timecode_show_bits:
1014
1015                 // Find timecode time of this sample (pos) with subframe accuracy
1016                 _session->sample_to_timecode(pos, timecode, true /* use_offset */, true /* use_subframes */ );
1017
1018                 for (n = 0; n < timecode_nmarks; n++) {
1019                         _session->timecode_to_sample(timecode, pos, true /* use_offset */, true /* use_subframes */ );
1020                         if ((timecode.subframes % timecode_mark_modulo) == 0) {
1021                                 if (timecode.subframes == 0) {
1022                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1023                                         snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1024                                 } else {
1025                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1026                                         snprintf (buf, sizeof(buf), ".%02u", timecode.subframes);
1027                                 }
1028                         } else {
1029                                 snprintf (buf, sizeof(buf)," ");
1030                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1031
1032                         }
1033                         (*marks)[n].label = g_strdup (buf);
1034                         (*marks)[n].position = pos;
1035
1036                         // Increment subframes by one
1037                         Timecode::increment_subframes( timecode, _session->config.get_subframes_per_frame() );
1038                 }
1039           break;
1040         case timecode_show_seconds:
1041                 // Find timecode time of this sample (pos)
1042                 _session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1043                 // Go to next whole second down
1044                 Timecode::seconds_floor( timecode );
1045
1046                 for (n = 0; n < timecode_nmarks; n++) {
1047                         _session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1048                         if ((timecode.seconds % timecode_mark_modulo) == 0) {
1049                                 if (timecode.seconds == 0) {
1050                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1051                                         (*marks)[n].position = pos;
1052                                 } else {
1053                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1054                                         (*marks)[n].position = pos;
1055                                 }
1056                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1057                         } else {
1058                                 snprintf (buf, sizeof(buf)," ");
1059                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1060                                 (*marks)[n].position = pos;
1061
1062                         }
1063                         (*marks)[n].label = g_strdup (buf);
1064                         Timecode::increment_seconds( timecode, _session->config.get_subframes_per_frame() );
1065                 }
1066           break;
1067         case timecode_show_minutes:
1068                 // Find timecode time of this sample (pos)
1069                 _session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1070                 // Go to next whole minute down
1071                 Timecode::minutes_floor( timecode );
1072
1073                 for (n = 0; n < timecode_nmarks; n++) {
1074                         _session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1075                         if ((timecode.minutes % timecode_mark_modulo) == 0) {
1076                                 if (timecode.minutes == 0) {
1077                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1078                                 } else {
1079                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1080                                 }
1081                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1082                         } else {
1083                                 snprintf (buf, sizeof(buf)," ");
1084                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1085
1086                         }
1087                         (*marks)[n].label = g_strdup (buf);
1088                         (*marks)[n].position = pos;
1089                         Timecode::increment_minutes( timecode, _session->config.get_subframes_per_frame() );
1090                 }
1091
1092           break;
1093         case timecode_show_hours:
1094                 // Find timecode time of this sample (pos)
1095                 _session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1096                 // Go to next whole hour down
1097                 Timecode::hours_floor( timecode );
1098
1099                 for (n = 0; n < timecode_nmarks; n++) {
1100                         _session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1101                         if ((timecode.hours % timecode_mark_modulo) == 0) {
1102                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1103                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1104                         } else {
1105                                 snprintf (buf, sizeof(buf)," ");
1106                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1107
1108                         }
1109                         (*marks)[n].label = g_strdup (buf);
1110                         (*marks)[n].position = pos;
1111
1112                         Timecode::increment_hours( timecode, _session->config.get_subframes_per_frame() );
1113                 }
1114           break;
1115         case timecode_show_frames:
1116                 // Find timecode time of this sample (pos)
1117                 _session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1118                 // Go to next whole frame down
1119                 Timecode::frames_floor( timecode );
1120
1121                 for (n = 0; n < timecode_nmarks; n++) {
1122                         _session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1123                         if ((timecode.frames % timecode_mark_modulo) == 0)  {
1124                                 if (timecode.frames == 0) {
1125                                   (*marks)[n].style = GtkCustomRulerMarkMajor;
1126                                 } else {
1127                                   (*marks)[n].style = GtkCustomRulerMarkMinor;
1128                                 }
1129                                 (*marks)[n].position = pos;
1130                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1131                         } else {
1132                                 snprintf (buf, sizeof(buf)," ");
1133                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1134                                 (*marks)[n].position = pos;
1135
1136                         }
1137                         (*marks)[n].label = g_strdup (buf);
1138                         Timecode::increment( timecode, _session->config.get_subframes_per_frame() );
1139                 }
1140
1141           break;
1142         }
1143
1144         return timecode_nmarks;
1145 }
1146
1147
1148 void
1149 Editor::compute_bbt_ruler_scale (framepos_t lower, framepos_t upper)
1150 {
1151         if (_session == 0) {
1152                 return;
1153         }
1154         TempoMap::BBTPointList::iterator i;
1155         Timecode::BBT_Time lower_beat, upper_beat; // the beats at each end of the ruler
1156
1157         _session->bbt_time (lower, lower_beat);
1158         _session->bbt_time (upper, upper_beat);
1159         uint32_t beats = 0;
1160
1161         bbt_accent_modulo = 1;
1162         bbt_bar_helper_on = false;
1163         bbt_bars = 0;
1164         bbt_nmarks = 1;
1165
1166         bbt_ruler_scale =  bbt_over;
1167
1168         switch (_snap_type) {
1169         case SnapToBeatDiv2:
1170                 bbt_beat_subdivision = 2;
1171                 break;
1172         case SnapToBeatDiv3:
1173                 bbt_beat_subdivision = 3;
1174                 break;
1175         case SnapToBeatDiv4:
1176                 bbt_beat_subdivision = 4;
1177                 break;
1178         case SnapToBeatDiv5:
1179                 bbt_beat_subdivision = 5;
1180                 bbt_accent_modulo = 2; // XXX YIKES
1181                 break;
1182         case SnapToBeatDiv6:
1183                 bbt_beat_subdivision = 6;
1184                 bbt_accent_modulo = 2; // XXX YIKES
1185                 break;
1186         case SnapToBeatDiv7:
1187                 bbt_beat_subdivision = 7;
1188                 bbt_accent_modulo = 2; // XXX YIKES
1189                 break;
1190         case SnapToBeatDiv8:
1191                 bbt_beat_subdivision = 8;
1192                 bbt_accent_modulo = 2;
1193                 break;
1194         case SnapToBeatDiv10:
1195                 bbt_beat_subdivision = 10;
1196                 bbt_accent_modulo = 2; // XXX YIKES
1197                 break;
1198         case SnapToBeatDiv12:
1199                 bbt_beat_subdivision = 12;
1200                 bbt_accent_modulo = 3;
1201                 break;
1202         case SnapToBeatDiv14:
1203                 bbt_beat_subdivision = 14;
1204                 bbt_accent_modulo = 3; // XXX YIKES!
1205                 break;
1206         case SnapToBeatDiv16:
1207                 bbt_beat_subdivision = 16;
1208                 bbt_accent_modulo = 4;
1209                 break;
1210         case SnapToBeatDiv20:
1211                 bbt_beat_subdivision = 20;
1212                 bbt_accent_modulo = 5;
1213                 break;
1214         case SnapToBeatDiv24:
1215                 bbt_beat_subdivision = 24;
1216                 bbt_accent_modulo = 6;
1217                 break;
1218         case SnapToBeatDiv28:
1219                 bbt_beat_subdivision = 28;
1220                 bbt_accent_modulo = 7;
1221                 break;
1222         case SnapToBeatDiv32:
1223                 bbt_beat_subdivision = 32;
1224                 bbt_accent_modulo = 8;
1225                 break;
1226         default:
1227                 bbt_beat_subdivision = 4;
1228                 break;
1229         }
1230
1231         if (current_bbt_points == 0 || current_bbt_points->empty()) {
1232                 return;
1233         }
1234
1235         i = current_bbt_points->end();
1236         i--;
1237         if ((*i).beat >= (*current_bbt_points->begin()).beat) {
1238                 bbt_bars = (*i).bar - (*current_bbt_points->begin()).bar;
1239         } else {
1240                 bbt_bars = (*i).bar - (*current_bbt_points->begin()).bar - 1;
1241         }
1242         beats = current_bbt_points->size() - bbt_bars;
1243
1244         /* Only show the bar helper if there aren't many bars on the screen */
1245         if ((bbt_bars < 2) || (beats < 5)) {
1246                 bbt_bar_helper_on = true;
1247         }
1248
1249         if (bbt_bars > 8192) {
1250                 bbt_ruler_scale =  bbt_over;
1251         } else if (bbt_bars > 1024) {
1252                 bbt_ruler_scale = bbt_show_64;
1253         } else if (bbt_bars > 256) {
1254                 bbt_ruler_scale = bbt_show_16;
1255         } else if (bbt_bars > 64) {
1256                 bbt_ruler_scale = bbt_show_4;
1257         } else if (bbt_bars > 10) {
1258                 bbt_ruler_scale =  bbt_show_1;
1259         } else if (bbt_bars > 2) {
1260                 bbt_ruler_scale =  bbt_show_beats;
1261         } else  if (bbt_bars > 0) {
1262                 bbt_ruler_scale =  bbt_show_ticks;
1263         } else {
1264                 bbt_ruler_scale =  bbt_show_ticks_detail;
1265         }
1266
1267         if ((bbt_ruler_scale == bbt_show_ticks_detail) && (lower_beat.beats == upper_beat.beats) && (upper_beat.ticks - lower_beat.ticks <= Timecode::BBT_Time::ticks_per_beat / 4)) {
1268                 bbt_ruler_scale =  bbt_show_ticks_super_detail;
1269         }
1270 }
1271
1272 gint
1273 Editor::metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upper*/, gint /*maxchars*/)
1274 {
1275         if (_session == 0) {
1276                 return 0;
1277         }
1278
1279         TempoMap::BBTPointList::iterator i;
1280
1281         char buf[64];
1282         gint  n = 0;
1283         framepos_t pos;
1284         Timecode::BBT_Time next_beat;
1285         framepos_t next_beat_pos;
1286         uint32_t beats = 0;
1287
1288         uint32_t tick = 0;
1289         uint32_t skip;
1290         uint32_t t;
1291         framepos_t frame_skip;
1292         double frame_skip_error;
1293         double bbt_position_of_helper;
1294         double accumulated_error;
1295         bool i_am_accented = false;
1296         bool helper_active = false;
1297
1298         if (current_bbt_points == 0 || current_bbt_points->empty()) {
1299                 return 0;
1300         }
1301
1302         switch (bbt_ruler_scale) {
1303
1304         case bbt_show_beats:
1305                 beats = current_bbt_points->size();
1306                 bbt_nmarks = beats + 2;
1307
1308                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1309
1310                 (*marks)[0].label = g_strdup(" ");
1311                 (*marks)[0].position = lower;
1312                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1313
1314                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1315                         if  ((*i).type != TempoMap::Beat) {
1316                                 continue;
1317                         }
1318                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1319                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1320                                 (*marks)[0].label = g_strdup (buf);
1321                                 helper_active = true;
1322                         } else {
1323
1324                                 if ((*i).beat == 1) {
1325                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1326                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1327                                 } else if (((*i).beat % 2 == 1)) {
1328                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1329                                         snprintf (buf, sizeof(buf), " ");
1330                                 } else {
1331                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1332                                         snprintf (buf, sizeof(buf), " ");
1333                                 }
1334                                 (*marks)[n].label =  g_strdup (buf);
1335                                 (*marks)[n].position = (*i).frame;
1336                                 n++;
1337                         }
1338                 }
1339                 break;
1340
1341         case bbt_show_ticks:
1342
1343                 beats = current_bbt_points->size();
1344                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1345
1346                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1347                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1348
1349                 (*marks)[0].label = g_strdup(" ");
1350                 (*marks)[0].position = lower;
1351                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1352
1353                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1354                         if  ((*i).type != TempoMap::Beat) {
1355                                 continue;
1356                         }
1357                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1358                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1359                                 (*marks)[0].label = g_strdup (buf);
1360                                 helper_active = true;
1361                         } else {
1362
1363                                 if ((*i).beat == 1) {
1364                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1365                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1366                                 } else {
1367                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1368                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1369                                 }
1370                                 if (((*i).frame < bbt_position_of_helper) && helper_active) {
1371                                         snprintf (buf, sizeof(buf), " ");
1372                                 }
1373                                 (*marks)[n].label =  g_strdup (buf);
1374                                 (*marks)[n].position = (*i).frame;
1375                                 n++;
1376                         }
1377
1378                         /* Add the tick marks */
1379
1380                         /* Find the next beat */
1381                         next_beat.beats = (*i).beat;
1382                         next_beat.bars = (*i).bar;
1383                         next_beat.ticks = 0;
1384
1385                         if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1386                                   next_beat.beats += 1;
1387                         } else {
1388                                   next_beat.bars += 1;
1389                                   next_beat.beats = 1;
1390                         }
1391
1392                         next_beat_pos = _session->tempo_map().frame_time(next_beat);
1393
1394                         frame_skip = (framepos_t) floor (frame_skip_error = (_session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1395                         frame_skip_error -= frame_skip;
1396                         skip = (uint32_t) (Timecode::BBT_Time::ticks_per_beat / bbt_beat_subdivision);
1397
1398                         pos = (*i).frame + frame_skip;
1399                         accumulated_error = frame_skip_error;
1400
1401                         tick = skip;
1402
1403                         for (t = 0; (tick < Timecode::BBT_Time::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1404
1405                                 if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1406                                         i_am_accented = true;
1407                                 }
1408
1409                                 snprintf (buf, sizeof(buf), " ");
1410                                 (*marks)[n].label = g_strdup (buf);
1411
1412                                 /* Error compensation for float to framepos_t*/
1413                                 accumulated_error += frame_skip_error;
1414                                 if (accumulated_error > 1) {
1415                                         pos += 1;
1416                                         accumulated_error -= 1.0f;
1417                                 }
1418
1419                                 (*marks)[n].position = pos;
1420
1421                                 if ((bbt_beat_subdivision > 4) && i_am_accented) {
1422                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1423                                 } else {
1424                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1425                                 }
1426                                 i_am_accented = false;
1427                                 n++;
1428                         }
1429                 }
1430
1431           break;
1432
1433         case bbt_show_ticks_detail:
1434
1435                 beats = current_bbt_points->size();
1436                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1437
1438                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1439                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1440
1441                 (*marks)[0].label = g_strdup(" ");
1442                 (*marks)[0].position = lower;
1443                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1444
1445                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1446                         if  ((*i).type != TempoMap::Beat) {
1447                                 continue;
1448                         }
1449                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1450                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1451                                 (*marks)[0].label = g_strdup (buf);
1452                                 helper_active = true;
1453                         } else {
1454
1455                                 if ((*i).beat == 1) {
1456                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1457                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1458                                 } else {
1459                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1460                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1461                                 }
1462                                 if (((*i).frame < bbt_position_of_helper) && helper_active) {
1463                                         snprintf (buf, sizeof(buf), " ");
1464                                 }
1465                                 (*marks)[n].label =  g_strdup (buf);
1466                                 (*marks)[n].position = (*i).frame;
1467                                 n++;
1468                         }
1469
1470                         /* Add the tick marks */
1471
1472                         /* Find the next beat */
1473
1474                         next_beat.beats = (*i).beat;
1475                         next_beat.bars = (*i).bar;
1476
1477                         if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1478                                   next_beat.beats += 1;
1479                         } else {
1480                                   next_beat.bars += 1;
1481                                   next_beat.beats = 1;
1482                         }
1483
1484                         next_beat_pos = _session->tempo_map().frame_time(next_beat);
1485
1486                         frame_skip = (framepos_t) floor (frame_skip_error = (_session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1487                         frame_skip_error -= frame_skip;
1488                         skip = (uint32_t) (Timecode::BBT_Time::ticks_per_beat / bbt_beat_subdivision);
1489
1490                         pos = (*i).frame + frame_skip;
1491                         accumulated_error = frame_skip_error;
1492
1493                         tick = skip;
1494
1495                         for (t = 0; (tick < Timecode::BBT_Time::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1496
1497                                 if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1498                                         i_am_accented = true;
1499                                 }
1500
1501                                 if (i_am_accented && (pos > bbt_position_of_helper)){
1502                                         snprintf (buf, sizeof(buf), "%" PRIu32, tick);
1503                                 } else {
1504                                         snprintf (buf, sizeof(buf), " ");
1505                                 }
1506
1507                                 (*marks)[n].label = g_strdup (buf);
1508
1509                                 /* Error compensation for float to framepos_t*/
1510                                 accumulated_error += frame_skip_error;
1511                                 if (accumulated_error > 1) {
1512                                         pos += 1;
1513                                         accumulated_error -= 1.0f;
1514                                 }
1515
1516                                 (*marks)[n].position = pos;
1517
1518                                 if ((bbt_beat_subdivision > 4) && i_am_accented) {
1519                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1520                                 } else {
1521                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1522                                 }
1523                                 i_am_accented = false;
1524                                 n++;
1525                         }
1526                 }
1527
1528           break;
1529
1530         case bbt_show_ticks_super_detail:
1531
1532                 beats = current_bbt_points->size();
1533                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1534
1535                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1536                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1537
1538                 (*marks)[0].label = g_strdup(" ");
1539                 (*marks)[0].position = lower;
1540                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1541
1542                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1543                         if  ((*i).type != TempoMap::Beat) {
1544                                   continue;
1545                         }
1546                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1547                                   snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1548                                   (*marks)[0].label = g_strdup (buf);
1549                                   helper_active = true;
1550                         } else {
1551
1552                                   if ((*i).beat == 1) {
1553                                           (*marks)[n].style = GtkCustomRulerMarkMajor;
1554                                           snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1555                                   } else {
1556                                           (*marks)[n].style = GtkCustomRulerMarkMinor;
1557                                           snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1558                                   }
1559                                   if (((*i).frame < bbt_position_of_helper) && helper_active) {
1560                                           snprintf (buf, sizeof(buf), " ");
1561                                   }
1562                                   (*marks)[n].label =  g_strdup (buf);
1563                                   (*marks)[n].position = (*i).frame;
1564                                   n++;
1565                         }
1566
1567                         /* Add the tick marks */
1568
1569                         /* Find the next beat */
1570
1571                         next_beat.beats = (*i).beat;
1572                         next_beat.bars = (*i).bar;
1573
1574                         if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1575                                   next_beat.beats += 1;
1576                         } else {
1577                                   next_beat.bars += 1;
1578                                   next_beat.beats = 1;
1579                         }
1580
1581                         next_beat_pos = _session->tempo_map().frame_time(next_beat);
1582
1583                         frame_skip = (framepos_t) floor (frame_skip_error = (_session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1584                         frame_skip_error -= frame_skip;
1585                         skip = (uint32_t) (Timecode::BBT_Time::ticks_per_beat / bbt_beat_subdivision);
1586
1587                         pos = (*i).frame + frame_skip;
1588                         accumulated_error = frame_skip_error;
1589
1590                         tick = skip;
1591
1592                         for (t = 0; (tick < Timecode::BBT_Time::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1593
1594                                   if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1595                                           i_am_accented = true;
1596                                   }
1597
1598                                   if (pos > bbt_position_of_helper) {
1599                                           snprintf (buf, sizeof(buf), "%" PRIu32, tick);
1600                                   } else {
1601                                           snprintf (buf, sizeof(buf), " ");
1602                                   }
1603
1604                                   (*marks)[n].label = g_strdup (buf);
1605
1606                                   /* Error compensation for float to framepos_t*/
1607                                   accumulated_error += frame_skip_error;
1608                                   if (accumulated_error > 1) {
1609                                           pos += 1;
1610                                           accumulated_error -= 1.0f;
1611                                   }
1612
1613                                   (*marks)[n].position = pos;
1614
1615                                   if ((bbt_beat_subdivision > 4) && i_am_accented) {
1616                                           (*marks)[n].style = GtkCustomRulerMarkMinor;
1617                                   } else {
1618                                           (*marks)[n].style = GtkCustomRulerMarkMicro;
1619                                   }
1620                                   i_am_accented = false;
1621                                   n++;
1622                         }
1623                 }
1624
1625           break;
1626
1627         case bbt_over:
1628                         bbt_nmarks = 1;
1629                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1630                         snprintf (buf, sizeof(buf), "cannot handle %" PRIu32 " bars", bbt_bars );
1631                         (*marks)[0].style = GtkCustomRulerMarkMajor;
1632                         (*marks)[0].label = g_strdup (buf);
1633                         (*marks)[0].position = lower;
1634                         n = 1;
1635
1636           break;
1637
1638         case bbt_show_64:
1639                         bbt_nmarks = (gint) (bbt_bars / 64) + 1;
1640                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1641                         for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; i++) {
1642                                 if ((*i).type == TempoMap::Bar)  {
1643                                         if ((*i).bar % 64 == 1) {
1644                                                 if ((*i).bar % 256 == 1) {
1645                                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1646                                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1647                                                 } else {
1648                                                         snprintf (buf, sizeof(buf), " ");
1649                                                         if ((*i).bar % 256 == 129)  {
1650                                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1651                                                         } else {
1652                                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1653                                                         }
1654                                                 }
1655                                                 (*marks)[n].label = g_strdup (buf);
1656                                                 (*marks)[n].position = (*i).frame;
1657                                                 n++;
1658                                         }
1659                                 }
1660                         }
1661                         break;
1662
1663         case bbt_show_16:
1664                 bbt_nmarks = (bbt_bars / 16) + 1;
1665                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1666                 for (n = 0,  i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; i++) {
1667                         if ((*i).type == TempoMap::Bar)  {
1668                           if ((*i).bar % 16 == 1) {
1669                                 if ((*i).bar % 64 == 1) {
1670                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1671                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1672                                 } else {
1673                                         snprintf (buf, sizeof(buf), " ");
1674                                         if ((*i).bar % 64 == 33)  {
1675                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1676                                         } else {
1677                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1678                                         }
1679                                 }
1680                                 (*marks)[n].label = g_strdup (buf);
1681                                 (*marks)[n].position = (*i).frame;
1682                                 n++;
1683                           }
1684                         }
1685                 }
1686           break;
1687
1688         case bbt_show_4:
1689                 bbt_nmarks = (bbt_bars / 4) + 1;
1690                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1691                 for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; ++i) {
1692                         if ((*i).type == TempoMap::Bar)  {
1693                           if ((*i).bar % 4 == 1) {
1694                                 if ((*i).bar % 16 == 1) {
1695                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1696                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1697                                 } else {
1698                                         snprintf (buf, sizeof(buf), " ");
1699                                         if ((*i).bar % 16 == 9)  {
1700                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1701                                         } else {
1702                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1703                                         }
1704                                 }
1705                                 (*marks)[n].label = g_strdup (buf);
1706                                 (*marks)[n].position = (*i).frame;
1707                                 n++;
1708                           }
1709                         }
1710                 }
1711           break;
1712
1713         case bbt_show_1:
1714   //    default:
1715                 bbt_nmarks = bbt_bars + 2;
1716                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks );
1717                 for (n = 0,  i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; i++) {
1718                         if ((*i).type == TempoMap::Bar)  {
1719                           if ((*i).bar % 4 == 1) {
1720                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1721                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1722                           } else {
1723                                 snprintf (buf, sizeof(buf), " ");
1724                                 if ((*i).bar % 4 == 3)  {
1725                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1726                                 } else {
1727                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1728                                 }
1729                           }
1730                         (*marks)[n].label = g_strdup (buf);
1731                         (*marks)[n].position = (*i).frame;
1732                         n++;
1733                         }
1734                 }
1735
1736         break;
1737
1738         }
1739
1740         return n; //return the actual number of marks made, since we might have skipped some from fractional time signatures
1741
1742 }
1743
1744 void
1745 Editor::set_frames_ruler_scale (framepos_t lower, framepos_t upper)
1746 {
1747         _frames_ruler_interval = (upper - lower) / 5;
1748 }
1749
1750 gint
1751 Editor::metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint /*maxchars*/)
1752 {
1753         framepos_t pos;
1754         framepos_t const ilower = (framepos_t) floor (lower);
1755         gchar buf[16];
1756         gint nmarks;
1757         gint n;
1758
1759         if (_session == 0) {
1760                 return 0;
1761         }
1762
1763         nmarks = 5;
1764         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1765         for (n = 0, pos = ilower; n < nmarks; pos += _frames_ruler_interval, ++n) {
1766                 snprintf (buf, sizeof(buf), "%" PRIi64, pos);
1767                 (*marks)[n].label = g_strdup (buf);
1768                 (*marks)[n].position = pos;
1769                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1770         }
1771
1772         return nmarks;
1773 }
1774
1775 static void
1776 sample_to_clock_parts ( framepos_t sample,
1777                         framepos_t sample_rate,
1778                         long *hrs_p,
1779                         long *mins_p,
1780                         long *secs_p,
1781                         long *millisecs_p)
1782
1783 {
1784         framepos_t left;
1785         long hrs;
1786         long mins;
1787         long secs;
1788         long millisecs;
1789
1790         left = sample;
1791         hrs = left / (sample_rate * 60 * 60);
1792         left -= hrs * sample_rate * 60 * 60;
1793         mins = left / (sample_rate * 60);
1794         left -= mins * sample_rate * 60;
1795         secs = left / sample_rate;
1796         left -= secs * sample_rate;
1797         millisecs = left * 1000 / sample_rate;
1798
1799         *millisecs_p = millisecs;
1800         *secs_p = secs;
1801         *mins_p = mins;
1802         *hrs_p = hrs;
1803
1804         return;
1805 }
1806
1807 void
1808 Editor::set_minsec_ruler_scale (framepos_t lower, framepos_t upper)
1809 {
1810         framepos_t fr;
1811         framepos_t spacer;
1812
1813         if (_session == 0) {
1814                 return;
1815         }
1816
1817         fr = _session->frame_rate();
1818
1819         /* to prevent 'flashing' */
1820         if (lower > (spacer = (framepos_t)(128 * Editor::get_current_zoom ()))) {
1821                 lower -= spacer;
1822         } else {
1823                 lower = 0;
1824         }
1825         upper += spacer;
1826         framecnt_t const range = upper - lower;
1827
1828         if (range <  (fr / 50)) {
1829                 minsec_mark_interval =  fr / 1000; /* show 1/1000 seconds */
1830                 minsec_ruler_scale = minsec_show_frames;
1831                 minsec_mark_modulo = 10;
1832         } else if (range <= (fr / 10)) { /* 0-0.1 second */
1833                 minsec_mark_interval = fr / 1000; /* show 1/1000 seconds */
1834                 minsec_ruler_scale = minsec_show_frames;
1835                 minsec_mark_modulo = 10;
1836         } else if (range <= (fr / 2)) { /* 0-0.5 second */
1837                 minsec_mark_interval = fr / 100;  /* show 1/100 seconds */
1838                 minsec_ruler_scale = minsec_show_frames;
1839                 minsec_mark_modulo = 100;
1840         } else if (range <= fr) { /* 0-1 second */
1841                 minsec_mark_interval = fr / 10;  /* show 1/10 seconds */
1842                 minsec_ruler_scale = minsec_show_frames;
1843                 minsec_mark_modulo = 200;
1844         } else if (range <= 2 * fr) { /* 1-2 seconds */
1845                 minsec_mark_interval = fr / 10; /* show 1/10 seconds */
1846                 minsec_ruler_scale = minsec_show_frames;
1847                 minsec_mark_modulo = 500;
1848         } else if (range <= 8 * fr) { /* 2-5 seconds */
1849                 minsec_mark_interval =  fr / 5; /* show 2 seconds */
1850                 minsec_ruler_scale = minsec_show_frames;
1851                 minsec_mark_modulo = 1000;
1852         } else if (range <= 16 * fr) { /* 8-16 seconds */
1853                 minsec_mark_interval =  fr; /* show 1 seconds */
1854                 minsec_ruler_scale = minsec_show_seconds;
1855                 minsec_mark_modulo = 2;
1856         } else if (range <= 30 * fr) { /* 10-30 seconds */
1857                 minsec_mark_interval =  fr; /* show 1 seconds */
1858                 minsec_ruler_scale = minsec_show_seconds;
1859                 minsec_mark_modulo = 5;
1860         } else if (range <= 60 * fr) { /* 30-60 seconds */
1861                 minsec_mark_interval = fr; /* show 1 seconds */
1862                 minsec_ruler_scale = minsec_show_seconds;
1863                 minsec_mark_modulo = 5;
1864         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
1865                 minsec_mark_interval = 5 * fr; /* show 5 seconds */
1866                 minsec_ruler_scale = minsec_show_seconds;
1867                 minsec_mark_modulo = 3;
1868         } else if (range <= 4 * 60 * fr) { /* 4 minutes */
1869                 minsec_mark_interval = 5 * fr; /* show 10 seconds */
1870                 minsec_ruler_scale = minsec_show_seconds;
1871                 minsec_mark_modulo = 30;
1872         } else if (range <= 10 * 60 * fr) { /* 10 minutes */
1873                 minsec_mark_interval = 30 * fr; /* show 30 seconds */
1874                 minsec_ruler_scale = minsec_show_seconds;
1875                 minsec_mark_modulo = 120;
1876         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
1877                 minsec_mark_interval =  60 * fr; /* show 1 minute */
1878                 minsec_ruler_scale = minsec_show_minutes;
1879                 minsec_mark_modulo = 5;
1880         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
1881                 minsec_mark_interval = 2 * 60 * fr; /* show 2 minutes */
1882                 minsec_ruler_scale = minsec_show_minutes;
1883                 minsec_mark_modulo = 10;
1884         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
1885                 minsec_mark_interval = 5 * 60 * fr; /* show 10 minutes */
1886                 minsec_ruler_scale = minsec_show_minutes;
1887                 minsec_mark_modulo = 30;
1888         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
1889                 minsec_mark_interval = 20 * 60 * fr; /* show 20 minutes */
1890                 minsec_ruler_scale = minsec_show_minutes;
1891                 minsec_mark_modulo = 60;
1892         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
1893                 minsec_mark_interval =  60 * 60 * fr; /* show 60 minutes */
1894                 minsec_ruler_scale = minsec_show_hours;
1895                 minsec_mark_modulo = 2;
1896         } else {
1897
1898                 /* not possible if framepos_t is a 32 bit quantity */
1899
1900                 minsec_mark_interval = 4 * 60 * 60 * fr; /* show 4 hrs */
1901         }
1902         minsec_nmarks = 2 + (range / minsec_mark_interval);
1903 }
1904
1905 gint
1906 Editor::metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upper*/, gint /*maxchars*/)
1907 {
1908         framepos_t pos;
1909         framepos_t spacer;
1910         long hrs, mins, secs, millisecs;
1911         gchar buf[16];
1912         gint n;
1913
1914         if (_session == 0) {
1915                 return 0;
1916         }
1917
1918         /* to prevent 'flashing' */
1919         if (lower > (spacer = (framepos_t) (128 * Editor::get_current_zoom ()))) {
1920                 lower = lower - spacer;
1921         } else {
1922                 lower = 0;
1923         }
1924
1925         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * minsec_nmarks);
1926         pos = ((((framepos_t) floor(lower)) + (minsec_mark_interval/2))/minsec_mark_interval) * minsec_mark_interval;
1927         switch (minsec_ruler_scale) {
1928         case minsec_show_seconds:
1929                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1930                         sample_to_clock_parts (pos, _session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1931                         if (secs % minsec_mark_modulo == 0) {
1932                                 if (secs == 0) {
1933                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1934                                 } else {
1935                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1936                                 }
1937                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1938                         } else {
1939                                 snprintf (buf, sizeof(buf), " ");
1940                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1941                         }
1942                         (*marks)[n].label = g_strdup (buf);
1943                         (*marks)[n].position = pos;
1944                 }
1945           break;
1946         case minsec_show_minutes:
1947                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1948                         sample_to_clock_parts (pos, _session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1949                         if (mins % minsec_mark_modulo == 0) {
1950                                 if (mins == 0) {
1951                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1952                                 } else {
1953                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1954                                 }
1955                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1956                         } else {
1957                                 snprintf (buf, sizeof(buf), " ");
1958                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1959                         }
1960                         (*marks)[n].label = g_strdup (buf);
1961                         (*marks)[n].position = pos;
1962                 }
1963           break;
1964         case minsec_show_hours:
1965                  for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1966                         sample_to_clock_parts (pos, _session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1967                         if (hrs % minsec_mark_modulo == 0) {
1968                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1969                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1970                         } else {
1971                                 snprintf (buf, sizeof(buf), " ");
1972                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1973                         }
1974                         (*marks)[n].label = g_strdup (buf);
1975                         (*marks)[n].position = pos;
1976                 }
1977               break;
1978         case minsec_show_frames:
1979                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1980                         sample_to_clock_parts (pos, _session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1981                         if (millisecs % minsec_mark_modulo == 0) {
1982                                 if (secs == 0) {
1983                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1984                                 } else {
1985                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1986                                 }
1987                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1988                         } else {
1989                                 snprintf (buf, sizeof(buf), " ");
1990                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1991                         }
1992                         (*marks)[n].label = g_strdup (buf);
1993                         (*marks)[n].position = pos;
1994                 }
1995           break;
1996         }
1997
1998         return minsec_nmarks;
1999 }