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-samples-ruler");
 391         if (action) {
 392                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 393         }
 394         action = ActionManager::get_action ("Rulers", "toggle-bbt-ruler");
 395         if (action) {
 396                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 397         }
 398         action = ActionManager::get_action ("Rulers", "toggle-meter-ruler");
 399         if (action) {
 400                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 401         }
 402         action = ActionManager::get_action ("Rulers", "toggle-tempo-ruler");
 403         if (action) {
 404                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 405         }
 406         if (!Profile->get_sae()) {
 407                 action = ActionManager::get_action ("Rulers", "toggle-range-ruler");
 408                 if (action) {
 409                         ruler_items.push_back (MenuElem (*action->create_menu_item()));
 410                 }
 411         }
 412         action = ActionManager::get_action ("Rulers", "toggle-loop-punch-ruler");
 413         if (action) {
 414                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 415         }
 416         action = ActionManager::get_action ("Rulers", "toggle-cd-marker-ruler");
 417         if (action) {
 418                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 419         }
 420         action = ActionManager::get_action ("Rulers", "toggle-marker-ruler");
 421         if (action) {
 422                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 423         }
 424
 425         editor_ruler_menu->popup (1, gtk_get_current_event_time());
 426
 427         no_ruler_shown_update = false;
 428 }
 429
 430 void
 431 Editor::store_ruler_visibility ()
 432 {
 433         XMLNode* node = new XMLNode(X_("RulerVisibility"));
 434
 435         node->add_property (X_("timecode"), ruler_timecode_action->get_active() ? "yes": "no");
 436         node->add_property (X_("bbt"), ruler_bbt_action->get_active() ? "yes": "no");
 437         node->add_property (X_("frames"), ruler_samples_action->get_active() ? "yes": "no");
 438         node->add_property (X_("minsec"), ruler_minsec_action->get_active() ? "yes": "no");
 439         node->add_property (X_("tempo"), ruler_tempo_action->get_active() ? "yes": "no");
 440         node->add_property (X_("meter"), ruler_meter_action->get_active() ? "yes": "no");
 441         node->add_property (X_("marker"), ruler_marker_action->get_active() ? "yes": "no");
 442         node->add_property (X_("rangemarker"), ruler_range_action->get_active() ? "yes": "no");
 443         node->add_property (X_("transportmarker"), ruler_loop_punch_action->get_active() ? "yes": "no");
 444         node->add_property (X_("cdmarker"), ruler_cd_marker_action->get_active() ? "yes": "no");
 445
 446         _session->add_extra_xml (*node);
 447         _session->set_dirty ();
 448 }
 449
 450 void
 451 Editor::restore_ruler_visibility ()
 452 {
 453         XMLProperty* prop;
 454         XMLNode * node = _session->extra_xml (X_("RulerVisibility"));
 455
 456         no_ruler_shown_update = true;
 457
 458         if (node) {
 459                 if ((prop = node->property ("timecode")) != 0) {
 460                         if (string_is_affirmative (prop->value())) {
 461                                 ruler_timecode_action->set_active (true);
 462                         } else {
 463                                 ruler_timecode_action->set_active (false);
 464                         }
 465                 }
 466                 if ((prop = node->property ("bbt")) != 0) {
 467                         if (string_is_affirmative (prop->value())) {
 468                                 ruler_bbt_action->set_active (true);
 469                         } else {
 470                                 ruler_bbt_action->set_active (false);
 471                         }
 472                 }
 473                 if ((prop = node->property ("frames")) != 0) {
 474                         if (string_is_affirmative (prop->value())) {
 475                                 ruler_samples_action->set_active (true);
 476                         } else {
 477                                 ruler_samples_action->set_active (false);
 478                         }
 479                 }
 480                 if ((prop = node->property ("minsec")) != 0) {
 481                         if (string_is_affirmative (prop->value())) {
 482                                 ruler_minsec_action->set_active (true);
 483                         } else {
 484                                 ruler_minsec_action->set_active (false);
 485                         }
 486                 }
 487                 if ((prop = node->property ("tempo")) != 0) {
 488                         if (string_is_affirmative (prop->value())) {
 489                                 ruler_tempo_action->set_active (true);
 490                         } else {
 491                                 ruler_tempo_action->set_active (false);
 492                         }
 493                 }
 494                 if ((prop = node->property ("meter")) != 0) {
 495                         if (string_is_affirmative (prop->value())) {
 496                                 ruler_meter_action->set_active (true);
 497                         } else {
 498                                 ruler_meter_action->set_active (false);
 499                         }
 500                 }
 501                 if ((prop = node->property ("marker")) != 0) {
 502                         if (string_is_affirmative (prop->value())) {
 503                                 ruler_marker_action->set_active (true);
 504                         } else {
 505                                 ruler_marker_action->set_active (false);
 506                         }
 507                 }
 508                 if ((prop = node->property ("rangemarker")) != 0) {
 509                         if (string_is_affirmative (prop->value())) {
 510                                 ruler_range_action->set_active (true);
 511                         } else {
 512                                 ruler_range_action->set_active (false);
 513                         }
 514                 }
 515
 516                 if ((prop = node->property ("transportmarker")) != 0) {
 517                         if (string_is_affirmative (prop->value())) {
 518                                 ruler_loop_punch_action->set_active (true);
 519                         } else {
 520                                 ruler_loop_punch_action->set_active (false);
 521                         }
 522                 }
 523
 524                 if ((prop = node->property ("cdmarker")) != 0) {
 525                         if (string_is_affirmative (prop->value())) {
 526                                 ruler_cd_marker_action->set_active (true);
 527                         } else {
 528                                 ruler_cd_marker_action->set_active (false);
 529                         }
 530
 531                 } else {
 532                         // this _session doesn't yet know about the cdmarker ruler
 533                         // as a benefit to the user who doesn't know the feature exists, show the ruler if
 534                         // any cd marks exist
 535                         ruler_cd_marker_action->set_active (false);
 536                         const Locations::LocationList & locs = _session->locations()->list();
 537                         for (Locations::LocationList::const_iterator i = locs.begin(); i != locs.end(); ++i) {
 538                                 if ((*i)->is_cd_marker()) {
 539                                         ruler_cd_marker_action->set_active (true);
 540                                         break;
 541                                 }
 542                         }
 543                 }
 544
 545         }
 546
 547         no_ruler_shown_update = false;
 548         update_ruler_visibility ();
 549 }
 550
 551 void
 552 Editor::update_ruler_visibility ()
 553 {
 554         int visible_rulers = 0;
 555
 556         if (no_ruler_shown_update) {
 557                 return;
 558         }
 559
 560         visible_timebars = 0;
 561
 562         if (ruler_minsec_action->get_active()) {
 563                 visible_rulers++;
 564                 minsec_label.show ();
 565                 minsec_ruler->show ();
 566         } else {
 567                 minsec_label.hide ();
 568                 minsec_ruler->hide ();
 569         }
 570
 571         if (ruler_timecode_action->get_active()) {
 572                 visible_rulers++;
 573                 timecode_label.show ();
 574                 timecode_ruler->show ();
 575         } else {
 576                 timecode_label.hide ();
 577                 timecode_ruler->hide ();
 578         }
 579
 580         if (ruler_samples_action->get_active()) {
 581                 visible_rulers++;
 582                 frame_label.show ();
 583                 frames_ruler->show ();
 584         } else {
 585                 frame_label.hide ();
 586                 frames_ruler->hide ();
 587         }
 588
 589         if (ruler_bbt_action->get_active()) {
 590                 visible_rulers++;
 591                 bbt_label.show ();
 592                 bbt_ruler->show ();
 593         } else {
 594                 bbt_label.hide ();
 595                 bbt_ruler->hide ();
 596         }
 597
 598         double tbpos = 0.0;
 599         double tbgpos = 0.0;
 600         double old_unit_pos;
 601
 602 #ifdef GTKOSX
 603         /* gtk update probs require this (damn) */
 604         meter_label.hide();
 605         tempo_label.hide();
 606         range_mark_label.hide();
 607         transport_mark_label.hide();
 608         cd_mark_label.hide();
 609         mark_label.hide();
 610 #endif
 611         if (ruler_meter_action->get_active()) {
 612                 old_unit_pos = meter_group->property_y();
 613                 if (tbpos != old_unit_pos) {
 614                         meter_group->move ( 0.0, tbpos - old_unit_pos);
 615                 }
 616                 old_unit_pos = meter_bar_group->property_y();
 617                 if (tbgpos != old_unit_pos) {
 618                         meter_bar_group->move ( 0.0, tbgpos - old_unit_pos);
 619                 }
 620                 meter_bar_group->show();
 621                 meter_group->show();
 622                 meter_label.show();
 623                 tbpos += timebar_height;
 624                 tbgpos += timebar_height;
 625                 visible_timebars++;
 626         } else {
 627                 meter_bar_group->hide();
 628                 meter_group->hide();
 629                 meter_label.hide();
 630         }
 631
 632         if (ruler_tempo_action->get_active()) {
 633                 old_unit_pos = tempo_group->property_y();
 634                 if (tbpos != old_unit_pos) {
 635                         tempo_group->move(0.0, tbpos - old_unit_pos);
 636                 }
 637                 old_unit_pos = tempo_bar_group->property_y();
 638                 if (tbgpos != old_unit_pos) {
 639                         tempo_bar_group->move ( 0.0, tbgpos - old_unit_pos);
 640                 }
 641                 tempo_bar_group->show();
 642                 tempo_group->show();
 643                 tempo_label.show();
 644                 tbpos += timebar_height;
 645                 tbgpos += timebar_height;
 646                 visible_timebars++;
 647         } else {
 648                 tempo_bar_group->hide();
 649                 tempo_group->hide();
 650                 tempo_label.hide();
 651         }
 652
 653         if (!Profile->get_sae() && ruler_range_action->get_active()) {
 654                 old_unit_pos = range_marker_group->property_y();
 655                 if (tbpos != old_unit_pos) {
 656                         range_marker_group->move (0.0, tbpos - old_unit_pos);
 657                 }
 658                 old_unit_pos = range_marker_bar_group->property_y();
 659                 if (tbgpos != old_unit_pos) {
 660                         range_marker_bar_group->move (0.0, tbgpos - old_unit_pos);
 661                 }
 662                 range_marker_bar_group->show();
 663                 range_marker_group->show();
 664                 range_mark_label.show();
 665
 666                 tbpos += timebar_height;
 667                 tbgpos += timebar_height;
 668                 visible_timebars++;
 669         } else {
 670                 range_marker_bar_group->hide();
 671                 range_marker_group->hide();
 672                 range_mark_label.hide();
 673         }
 674
 675         if (ruler_loop_punch_action->get_active()) {
 676                 old_unit_pos = transport_marker_group->property_y();
 677                 if (tbpos != old_unit_pos) {
 678                         transport_marker_group->move ( 0.0, tbpos - old_unit_pos);
 679                 }
 680                 old_unit_pos = transport_marker_bar_group->property_y();
 681                 if (tbgpos != old_unit_pos) {
 682                         transport_marker_bar_group->move ( 0.0, tbgpos - old_unit_pos);
 683                 }
 684                 transport_marker_bar_group->show();
 685                 transport_marker_group->show();
 686                 transport_mark_label.show();
 687                 tbpos += timebar_height;
 688                 tbgpos += timebar_height;
 689                 visible_timebars++;
 690         } else {
 691                 transport_marker_bar_group->hide();
 692                 transport_marker_group->hide();
 693                 transport_mark_label.hide();
 694         }
 695
 696         if (ruler_cd_marker_action->get_active()) {
 697                 old_unit_pos = cd_marker_group->property_y();
 698                 if (tbpos != old_unit_pos) {
 699                         cd_marker_group->move (0.0, tbpos - old_unit_pos);
 700                 }
 701                 old_unit_pos = cd_marker_bar_group->property_y();
 702                 if (tbgpos != old_unit_pos) {
 703                         cd_marker_bar_group->move (0.0, tbgpos - old_unit_pos);
 704                 }
 705                 cd_marker_bar_group->show();
 706                 cd_marker_group->show();
 707                 cd_mark_label.show();
 708                 tbpos += timebar_height;
 709                 tbgpos += timebar_height;
 710                 visible_timebars++;
 711                 // make sure all cd markers show up in their respective places
 712                 update_cd_marker_display();
 713         } else {
 714                 cd_marker_bar_group->hide();
 715                 cd_marker_group->hide();
 716                 cd_mark_label.hide();
 717                 // make sure all cd markers show up in their respective places
 718                 update_cd_marker_display();
 719         }
 720
 721         if (ruler_marker_action->get_active()) {
 722                 old_unit_pos = marker_group->property_y();
 723                 if (tbpos != old_unit_pos) {
 724                         marker_group->move ( 0.0, tbpos - old_unit_pos);
 725                 }
 726                 old_unit_pos = marker_bar_group->property_y();
 727                 if (tbgpos != old_unit_pos) {
 728                         marker_bar_group->move ( 0.0, tbgpos - old_unit_pos);
 729                 }
 730                 marker_bar_group->show();
 731                 marker_group->show();
 732                 mark_label.show();
 733                 tbpos += timebar_height;
 734                 tbgpos += timebar_height;
 735                 visible_timebars++;
 736         } else {
 737                 marker_bar_group->hide();
 738                 marker_group->hide();
 739                 mark_label.hide();
 740         }
 741
 742         gdouble old_canvas_timebars_vsize = canvas_timebars_vsize;
 743         canvas_timebars_vsize = (timebar_height * visible_timebars) - 1;
 744         gdouble vertical_pos_delta = canvas_timebars_vsize - old_canvas_timebars_vsize;
 745         vertical_adjustment.set_upper(vertical_adjustment.get_upper() + vertical_pos_delta);
 746         full_canvas_height += vertical_pos_delta;
 747
 748         if (vertical_adjustment.get_value() != 0 && (vertical_adjustment.get_value() + _canvas_height >= full_canvas_height)) {
 749                 /*if we're at the bottom of the canvas, don't move the _trackview_group*/
 750                 vertical_adjustment.set_value (full_canvas_height - _canvas_height + 1);
 751         } else {
 752                 _trackview_group->property_y () = - get_trackview_group_vertical_offset ();
 753                 _background_group->property_y () = - get_trackview_group_vertical_offset ();
 754                 _trackview_group->move (0, 0);
 755                 _background_group->move (0, 0);
 756                 last_trackview_group_vertical_offset = get_trackview_group_vertical_offset ();
 757         }
 758
 759         gdouble bottom_track_pos = vertical_adjustment.get_value() + _canvas_height - canvas_timebars_vsize;
 760         std::pair<TimeAxisView*, int> const p = trackview_by_y_position (bottom_track_pos);
 761         if (p.first) {
 762                 p.first->clip_to_viewport ();
 763         }
 764
 765         ruler_label_vbox.set_size_request (-1, (int)(timebar_height * visible_rulers));
 766         time_canvas_vbox.set_size_request (-1,-1);
 767
 768         update_fixed_rulers();
 769         redisplay_tempo (false);
 770
 771         /* Changing ruler visibility means that any lines on markers might need updating */
 772         for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
 773                 i->second->setup_lines ();
 774         }
 775 }
 776
 777 void
 778 Editor::update_just_timecode ()
 779 {
 780         ENSURE_GUI_THREAD (*this, &Editor::update_just_timecode)
 781
 782         if (_session == 0) {
 783                 return;
 784         }
 785
 786         framepos_t rightmost_frame = leftmost_frame + current_page_frames();
 787
 788         if (ruler_timecode_action->get_active()) {
 789                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_timecode_ruler), leftmost_frame, rightmost_frame,
 790                                             leftmost_frame, _session->current_end_frame());
 791         }
 792 }
 793
 794 void
 795 Editor::compute_fixed_ruler_scale ()
 796 {
 797         if (_session == 0) {
 798                 return;
 799         }
 800
 801         if (ruler_timecode_action->get_active()) {
 802                 set_timecode_ruler_scale (leftmost_frame, leftmost_frame + current_page_frames() );
 803         }
 804
 805         if (ruler_minsec_action->get_active()) {
 806                 set_minsec_ruler_scale (leftmost_frame, leftmost_frame + current_page_frames() );
 807         }
 808 }
 809
 810 void
 811 Editor::update_fixed_rulers ()
 812 {
 813         framepos_t rightmost_frame;
 814
 815         if (_session == 0) {
 816                 return;
 817         }
 818
 819         ruler_metrics[ruler_metric_timecode].units_per_pixel = frames_per_unit;
 820         ruler_metrics[ruler_metric_frames].units_per_pixel = frames_per_unit;
 821         ruler_metrics[ruler_metric_minsec].units_per_pixel = frames_per_unit;
 822
 823         rightmost_frame = leftmost_frame + current_page_frames();
 824
 825         /* these force a redraw, which in turn will force execution of the metric callbacks
 826            to compute the relevant ticks to display.
 827         */
 828
 829         if (ruler_timecode_action->get_active()) {
 830                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_timecode_ruler), leftmost_frame, rightmost_frame,
 831                                             leftmost_frame, _session->current_end_frame());
 832         }
 833
 834         if (ruler_samples_action->get_active()) {
 835                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_frames_ruler), leftmost_frame, rightmost_frame,
 836                                             leftmost_frame, _session->current_end_frame());
 837         }
 838
 839         if (ruler_minsec_action->get_active()) {
 840                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_minsec_ruler), leftmost_frame, rightmost_frame,
 841                                             leftmost_frame, _session->current_end_frame());
 842         }
 843 }
 844
 845 void
 846 Editor::update_tempo_based_rulers ()
 847 {
 848         if (_session == 0) {
 849                 return;
 850         }
 851
 852         ruler_metrics[ruler_metric_bbt].units_per_pixel = frames_per_unit;
 853
 854         if (ruler_bbt_action->get_active()) {
 855                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_bbt_ruler), leftmost_frame, leftmost_frame+current_page_frames(),
 856                                             leftmost_frame, _session->current_end_frame());
 857         }
 858 }
 859
 860 /* Mark generation */
 861
 862 gint
 863 Editor::_metric_get_timecode (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 864 {
 865         return ruler_editor->metric_get_timecode (marks, lower, upper, maxchars);
 866 }
 867
 868 gint
 869 Editor::_metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 870 {
 871         return ruler_editor->metric_get_bbt (marks, lower, upper, maxchars);
 872 }
 873
 874 gint
 875 Editor::_metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 876 {
 877         return ruler_editor->metric_get_frames (marks, lower, upper, maxchars);
 878 }
 879
 880 gint
 881 Editor::_metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 882 {
 883         return ruler_editor->metric_get_minsec (marks, lower, upper, maxchars);
 884 }
 885
 886 void
 887 Editor::set_timecode_ruler_scale (gdouble lower, gdouble upper)
 888 {
 889         framepos_t range;
 890         framepos_t spacer;
 891         framepos_t fr;
 892
 893         if (_session == 0) {
 894                 return;
 895         }
 896
 897         fr = _session->frame_rate();
 898
 899         if (lower > (spacer = (framepos_t)(128 * Editor::get_current_zoom ()))) {
 900                 lower = lower - spacer;
 901         } else {
 902                 lower = 0;
 903         }
 904         upper = upper + spacer;
 905         range = (framepos_t) floor (upper - lower);
 906
 907         if (range < (2 * _session->frames_per_timecode_frame())) { /* 0 - 2 frames */
 908                 timecode_ruler_scale = timecode_show_bits;
 909                 timecode_mark_modulo = 20;
 910                 timecode_nmarks = 2 + (2 * _session->config.get_subframes_per_frame());
 911         } else if (range <= (fr / 4)) { /* 2 frames - 0.250 second */
 912                 timecode_ruler_scale = timecode_show_frames;
 913                 timecode_mark_modulo = 1;
 914                 timecode_nmarks = 2 + (range / (framepos_t)_session->frames_per_timecode_frame());
 915         } else if (range <= (fr / 2)) { /* 0.25-0.5 second */
 916                 timecode_ruler_scale = timecode_show_frames;
 917                 timecode_mark_modulo = 2;
 918                 timecode_nmarks = 2 + (range / (framepos_t)_session->frames_per_timecode_frame());
 919         } else if (range <= fr) { /* 0.5-1 second */
 920                 timecode_ruler_scale = timecode_show_frames;
 921                 timecode_mark_modulo = 5;
 922                 timecode_nmarks = 2 + (range / (framepos_t)_session->frames_per_timecode_frame());
 923         } else if (range <= 2 * fr) { /* 1-2 seconds */
 924                 timecode_ruler_scale = timecode_show_frames;
 925                 timecode_mark_modulo = 10;
 926                 timecode_nmarks = 2 + (range / (framepos_t)_session->frames_per_timecode_frame());
 927         } else if (range <= 8 * fr) { /* 2-8 seconds */
 928                 timecode_ruler_scale = timecode_show_seconds;
 929                 timecode_mark_modulo = 1;
 930                 timecode_nmarks = 2 + (range / fr);
 931         } else if (range <= 16 * fr) { /* 8-16 seconds */
 932                 timecode_ruler_scale = timecode_show_seconds;
 933                 timecode_mark_modulo = 2;
 934                 timecode_nmarks = 2 + (range / fr);
 935         } else if (range <= 30 * fr) { /* 16-30 seconds */
 936                 timecode_ruler_scale = timecode_show_seconds;
 937                 timecode_mark_modulo = 5;
 938                 timecode_nmarks = 2 + (range / fr);
 939         } else if (range <= 60 * fr) { /* 30-60 seconds */
 940                 timecode_ruler_scale = timecode_show_seconds;
 941                 timecode_mark_modulo = 5;
 942                 timecode_nmarks = 2 + (range / fr);
 943         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
 944                 timecode_ruler_scale = timecode_show_seconds;
 945                 timecode_mark_modulo = 15;
 946                 timecode_nmarks = 2 + (range / fr);
 947         } else if (range <= 4 * 60 * fr) { /* 2-4 minutes */
 948                 timecode_ruler_scale = timecode_show_seconds;
 949                 timecode_mark_modulo = 30;
 950                 timecode_nmarks = 2 + (range / fr);
 951         } else if (range <= 10 * 60 * fr) { /* 4-10 minutes */
 952                 timecode_ruler_scale = timecode_show_minutes;
 953                 timecode_mark_modulo = 2;
 954                 timecode_nmarks = 2 + 10;
 955         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
 956                 timecode_ruler_scale = timecode_show_minutes;
 957                 timecode_mark_modulo = 5;
 958                 timecode_nmarks = 2 + 30;
 959         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
 960                 timecode_ruler_scale = timecode_show_minutes;
 961                 timecode_mark_modulo = 10;
 962                 timecode_nmarks = 2 + 60;
 963         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
 964                 timecode_ruler_scale = timecode_show_minutes;
 965                 timecode_mark_modulo = 30;
 966                 timecode_nmarks = 2 + (60 * 4);
 967         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
 968                 timecode_ruler_scale = timecode_show_hours;
 969                 timecode_mark_modulo = 1;
 970                 timecode_nmarks = 2 + 8;
 971         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
 972                 timecode_ruler_scale = timecode_show_hours;
 973                 timecode_mark_modulo = 1;
 974                 timecode_nmarks = 2 + 24;
 975         } else {
 976
 977                 /* not possible if framepos_t is a 32 bit quantity */
 978
 979                 timecode_ruler_scale = timecode_show_hours;
 980                 timecode_mark_modulo = 4;
 981                 timecode_nmarks = 2 + 24;
 982         }
 983
 984 }
 985
 986 gint
 987 Editor::metric_get_timecode (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upper*/, gint /*maxchars*/)
 988 {
 989         framepos_t pos;
 990         framecnt_t spacer;
 991         Timecode::Time timecode;
 992         gchar buf[16];
 993         gint n;
 994
 995         if (_session == 0) {
 996                 return 0;
 997         }
 998
 999         if (lower > (spacer = (framecnt_t)(128 * Editor::get_current_zoom ()))) {
1000                 lower = lower - spacer;
1001         } else {
1002                 lower = 0;
1003         }
1004
1005         pos = (framecnt_t) floor (lower);
1006
1007         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * timecode_nmarks);
1008         switch (timecode_ruler_scale) {
1009         case timecode_show_bits:
1010
1011                 // Find timecode time of this sample (pos) with subframe accuracy
1012                 _session->sample_to_timecode(pos, timecode, true /* use_offset */, true /* use_subframes */ );
1013
1014                 for (n = 0; n < timecode_nmarks; n++) {
1015                         _session->timecode_to_sample(timecode, pos, true /* use_offset */, true /* use_subframes */ );
1016                         if ((timecode.subframes % timecode_mark_modulo) == 0) {
1017                                 if (timecode.subframes == 0) {
1018                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1019                                         snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1020                                 } else {
1021                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1022                                         snprintf (buf, sizeof(buf), ".%02u", timecode.subframes);
1023                                 }
1024                         } else {
1025                                 snprintf (buf, sizeof(buf)," ");
1026                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1027
1028                         }
1029                         (*marks)[n].label = g_strdup (buf);
1030                         (*marks)[n].position = pos;
1031
1032                         // Increment subframes by one
1033                         Timecode::increment_subframes( timecode, _session->config.get_subframes_per_frame() );
1034                 }
1035           break;
1036         case timecode_show_seconds:
1037                 // Find timecode time of this sample (pos)
1038                 _session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1039                 // Go to next whole second down
1040                 Timecode::seconds_floor( timecode );
1041
1042                 for (n = 0; n < timecode_nmarks; n++) {
1043                         _session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1044                         if ((timecode.seconds % timecode_mark_modulo) == 0) {
1045                                 if (timecode.seconds == 0) {
1046                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1047                                         (*marks)[n].position = pos;
1048                                 } else {
1049                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1050                                         (*marks)[n].position = pos;
1051                                 }
1052                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1053                         } else {
1054                                 snprintf (buf, sizeof(buf)," ");
1055                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1056                                 (*marks)[n].position = pos;
1057
1058                         }
1059                         (*marks)[n].label = g_strdup (buf);
1060                         Timecode::increment_seconds( timecode, _session->config.get_subframes_per_frame() );
1061                 }
1062           break;
1063         case timecode_show_minutes:
1064                 // Find timecode time of this sample (pos)
1065                 _session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1066                 // Go to next whole minute down
1067                 Timecode::minutes_floor( timecode );
1068
1069                 for (n = 0; n < timecode_nmarks; n++) {
1070                         _session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1071                         if ((timecode.minutes % timecode_mark_modulo) == 0) {
1072                                 if (timecode.minutes == 0) {
1073                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1074                                 } else {
1075                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1076                                 }
1077                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1078                         } else {
1079                                 snprintf (buf, sizeof(buf)," ");
1080                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1081
1082                         }
1083                         (*marks)[n].label = g_strdup (buf);
1084                         (*marks)[n].position = pos;
1085                         Timecode::increment_minutes( timecode, _session->config.get_subframes_per_frame() );
1086                 }
1087
1088           break;
1089         case timecode_show_hours:
1090                 // Find timecode time of this sample (pos)
1091                 _session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1092                 // Go to next whole hour down
1093                 Timecode::hours_floor( timecode );
1094
1095                 for (n = 0; n < timecode_nmarks; n++) {
1096                         _session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1097                         if ((timecode.hours % timecode_mark_modulo) == 0) {
1098                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1099                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1100                         } else {
1101                                 snprintf (buf, sizeof(buf)," ");
1102                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1103
1104                         }
1105                         (*marks)[n].label = g_strdup (buf);
1106                         (*marks)[n].position = pos;
1107
1108                         Timecode::increment_hours( timecode, _session->config.get_subframes_per_frame() );
1109                 }
1110           break;
1111         case timecode_show_frames:
1112                 // Find timecode time of this sample (pos)
1113                 _session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1114                 // Go to next whole frame down
1115                 Timecode::frames_floor( timecode );
1116
1117                 for (n = 0; n < timecode_nmarks; n++) {
1118                         _session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1119                         if ((timecode.frames % timecode_mark_modulo) == 0)  {
1120                                 if (timecode.frames == 0) {
1121                                   (*marks)[n].style = GtkCustomRulerMarkMajor;
1122                                 } else {
1123                                   (*marks)[n].style = GtkCustomRulerMarkMinor;
1124                                 }
1125                                 (*marks)[n].position = pos;
1126                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1127                         } else {
1128                                 snprintf (buf, sizeof(buf)," ");
1129                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1130                                 (*marks)[n].position = pos;
1131
1132                         }
1133                         (*marks)[n].label = g_strdup (buf);
1134                         Timecode::increment( timecode, _session->config.get_subframes_per_frame() );
1135                 }
1136
1137           break;
1138         }
1139
1140         return timecode_nmarks;
1141 }
1142
1143
1144 void
1145 Editor::compute_bbt_ruler_scale (framepos_t lower, framepos_t upper)
1146 {
1147         if (_session == 0) {
1148                 return;
1149         }
1150         TempoMap::BBTPointList::iterator i;
1151         BBT_Time lower_beat, upper_beat; // the beats at each end of the ruler
1152
1153         _session->bbt_time (lower, lower_beat);
1154         _session->bbt_time (upper, upper_beat);
1155         uint32_t beats = 0;
1156
1157         bbt_accent_modulo = 1;
1158         bbt_bar_helper_on = false;
1159         bbt_bars = 0;
1160         bbt_nmarks = 1;
1161
1162         bbt_ruler_scale =  bbt_over;
1163
1164         switch (_snap_type) {
1165         case SnapToBeatDiv2:
1166                 bbt_beat_subdivision = 2;
1167                 break;
1168         case SnapToBeatDiv3:
1169                 bbt_beat_subdivision = 3;
1170                 break;
1171         case SnapToBeatDiv4:
1172                 bbt_beat_subdivision = 4;
1173                 break;
1174         case SnapToBeatDiv5:
1175                 bbt_beat_subdivision = 5;
1176                 bbt_accent_modulo = 2; // XXX YIKES
1177                 break;
1178         case SnapToBeatDiv6:
1179                 bbt_beat_subdivision = 6;
1180                 bbt_accent_modulo = 2; // XXX YIKES
1181                 break;
1182         case SnapToBeatDiv7:
1183                 bbt_beat_subdivision = 7;
1184                 bbt_accent_modulo = 2; // XXX YIKES
1185                 break;
1186         case SnapToBeatDiv8:
1187                 bbt_beat_subdivision = 8;
1188                 bbt_accent_modulo = 2;
1189                 break;
1190         case SnapToBeatDiv10:
1191                 bbt_beat_subdivision = 10;
1192                 bbt_accent_modulo = 2; // XXX YIKES
1193                 break;
1194         case SnapToBeatDiv12:
1195                 bbt_beat_subdivision = 12;
1196                 bbt_accent_modulo = 3;
1197                 break;
1198         case SnapToBeatDiv14:
1199                 bbt_beat_subdivision = 14;
1200                 bbt_accent_modulo = 3; // XXX YIKES!
1201                 break;
1202         case SnapToBeatDiv16:
1203                 bbt_beat_subdivision = 16;
1204                 bbt_accent_modulo = 4;
1205                 break;
1206         case SnapToBeatDiv20:
1207                 bbt_beat_subdivision = 20;
1208                 bbt_accent_modulo = 5;
1209                 break;
1210         case SnapToBeatDiv24:
1211                 bbt_beat_subdivision = 24;
1212                 bbt_accent_modulo = 6;
1213                 break;
1214         case SnapToBeatDiv28:
1215                 bbt_beat_subdivision = 28;
1216                 bbt_accent_modulo = 7;
1217                 break;
1218         case SnapToBeatDiv32:
1219                 bbt_beat_subdivision = 32;
1220                 bbt_accent_modulo = 8;
1221                 break;
1222         default:
1223                 bbt_beat_subdivision = 4;
1224                 break;
1225         }
1226
1227         if (current_bbt_points == 0 || current_bbt_points->empty()) {
1228                 return;
1229         }
1230
1231         i = current_bbt_points->end();
1232         i--;
1233         if ((*i).beat >= (*current_bbt_points->begin()).beat) {
1234           bbt_bars = (*i).bar - (*current_bbt_points->begin()).bar;
1235         } else {
1236           bbt_bars = (*i).bar - (*current_bbt_points->begin()).bar - 1;
1237         }
1238         beats = current_bbt_points->size() - bbt_bars;
1239
1240         /*Only show the bar helper if there aren't many bars on the screen */
1241         if ((bbt_bars < 2) || (beats < 5)) {
1242                 bbt_bar_helper_on = true;
1243         }
1244
1245         if (bbt_bars > 8192) {
1246           bbt_ruler_scale =  bbt_over;
1247         } else if (bbt_bars > 1024) {
1248           bbt_ruler_scale = bbt_show_64;
1249         } else if (bbt_bars > 256) {
1250           bbt_ruler_scale = bbt_show_16;
1251         } else if (bbt_bars > 64) {
1252           bbt_ruler_scale = bbt_show_4;
1253         } else if (bbt_bars > 10) {
1254           bbt_ruler_scale =  bbt_show_1;
1255         } else if (bbt_bars > 2) {
1256           bbt_ruler_scale =  bbt_show_beats;
1257         } else  if (bbt_bars > 0) {
1258           bbt_ruler_scale =  bbt_show_ticks;
1259         } else {
1260           bbt_ruler_scale =  bbt_show_ticks_detail;
1261         }
1262
1263         if ((bbt_ruler_scale == bbt_show_ticks_detail) && (lower_beat.beats == upper_beat.beats) && (upper_beat.ticks - lower_beat.ticks <= Meter::ticks_per_beat / 4)) {
1264                 bbt_ruler_scale =  bbt_show_ticks_super_detail;
1265         }
1266 }
1267
1268 gint
1269 Editor::metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upper*/, gint /*maxchars*/)
1270 {
1271         if (_session == 0) {
1272                 return 0;
1273         }
1274
1275         TempoMap::BBTPointList::iterator i;
1276
1277         char buf[64];
1278         gint  n = 0;
1279         framepos_t pos;
1280         BBT_Time next_beat;
1281         framepos_t next_beat_pos;
1282         uint32_t beats = 0;
1283
1284         uint32_t tick = 0;
1285         uint32_t skip;
1286         uint32_t t;
1287         framepos_t frame_skip;
1288         double frame_skip_error;
1289         double bbt_position_of_helper;
1290         double accumulated_error;
1291         bool i_am_accented = false;
1292         bool helper_active = false;
1293
1294         if (current_bbt_points == 0 || current_bbt_points->empty()) {
1295                 return 0;
1296         }
1297
1298         switch (bbt_ruler_scale) {
1299
1300         case bbt_show_beats:
1301                 beats = current_bbt_points->size();
1302                 bbt_nmarks = beats + 2;
1303
1304                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1305
1306                 (*marks)[0].label = g_strdup(" ");
1307                 (*marks)[0].position = lower;
1308                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1309
1310                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1311                         if  ((*i).type != TempoMap::Beat) {
1312                                 continue;
1313                         }
1314                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1315                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1316                                 (*marks)[0].label = g_strdup (buf);
1317                                 helper_active = true;
1318                         } else {
1319
1320                                 if ((*i).beat == 1) {
1321                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1322                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1323                                 } else if (((*i).beat % 2 == 1)) {
1324                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1325                                         snprintf (buf, sizeof(buf), " ");
1326                                 } else {
1327                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1328                                         snprintf (buf, sizeof(buf), " ");
1329                                 }
1330                                 (*marks)[n].label =  g_strdup (buf);
1331                                 (*marks)[n].position = (*i).frame;
1332                                 n++;
1333                         }
1334                 }
1335                 break;
1336
1337         case bbt_show_ticks:
1338
1339                 beats = current_bbt_points->size();
1340                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1341
1342                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1343                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1344
1345                 (*marks)[0].label = g_strdup(" ");
1346                 (*marks)[0].position = lower;
1347                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1348
1349                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1350                         if  ((*i).type != TempoMap::Beat) {
1351                                 continue;
1352                         }
1353                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1354                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1355                                 (*marks)[0].label = g_strdup (buf);
1356                                 helper_active = true;
1357                         } else {
1358
1359                                 if ((*i).beat == 1) {
1360                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1361                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1362                                 } else {
1363                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1364                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1365                                 }
1366                                 if (((*i).frame < bbt_position_of_helper) && helper_active) {
1367                                         snprintf (buf, sizeof(buf), " ");
1368                                 }
1369                                 (*marks)[n].label =  g_strdup (buf);
1370                                 (*marks)[n].position = (*i).frame;
1371                                 n++;
1372                         }
1373
1374                         /* Add the tick marks */
1375
1376                         /* Find the next beat */
1377                         next_beat.beats = (*i).beat;
1378                         next_beat.bars = (*i).bar;
1379                         next_beat.ticks = 0;
1380
1381                         if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1382                                   next_beat.beats += 1;
1383                         } else {
1384                                   next_beat.bars += 1;
1385                                   next_beat.beats = 1;
1386                         }
1387
1388                         next_beat_pos = _session->tempo_map().frame_time(next_beat);
1389
1390                         frame_skip = (framepos_t) floor (frame_skip_error = (_session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1391                         frame_skip_error -= frame_skip;
1392                         skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);
1393
1394                         pos = (*i).frame + frame_skip;
1395                         accumulated_error = frame_skip_error;
1396
1397                         tick = skip;
1398
1399                         for (t = 0; (tick < Meter::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1400
1401                                 if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1402                                         i_am_accented = true;
1403                                 }
1404
1405                                 snprintf (buf, sizeof(buf), " ");
1406                                 (*marks)[n].label = g_strdup (buf);
1407
1408                                 /* Error compensation for float to framepos_t*/
1409                                 accumulated_error += frame_skip_error;
1410                                 if (accumulated_error > 1) {
1411                                         pos += 1;
1412                                         accumulated_error -= 1.0f;
1413                                 }
1414
1415                                 (*marks)[n].position = pos;
1416
1417                                 if ((bbt_beat_subdivision > 4) && i_am_accented) {
1418                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1419                                 } else {
1420                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1421                                 }
1422                                 i_am_accented = false;
1423                                 n++;
1424                         }
1425                 }
1426
1427           break;
1428
1429         case bbt_show_ticks_detail:
1430
1431                 beats = current_bbt_points->size();
1432                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1433
1434                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1435                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1436
1437                 (*marks)[0].label = g_strdup(" ");
1438                 (*marks)[0].position = lower;
1439                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1440
1441                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1442                         if  ((*i).type != TempoMap::Beat) {
1443                                 continue;
1444                         }
1445                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1446                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1447                                 (*marks)[0].label = g_strdup (buf);
1448                                 helper_active = true;
1449                         } else {
1450
1451                                 if ((*i).beat == 1) {
1452                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1453                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1454                                 } else {
1455                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1456                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1457                                 }
1458                                 if (((*i).frame < bbt_position_of_helper) && helper_active) {
1459                                         snprintf (buf, sizeof(buf), " ");
1460                                 }
1461                                 (*marks)[n].label =  g_strdup (buf);
1462                                 (*marks)[n].position = (*i).frame;
1463                                 n++;
1464                         }
1465
1466                         /* Add the tick marks */
1467
1468                         /* Find the next beat */
1469
1470                         next_beat.beats = (*i).beat;
1471                         next_beat.bars = (*i).bar;
1472
1473                         if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1474                                   next_beat.beats += 1;
1475                         } else {
1476                                   next_beat.bars += 1;
1477                                   next_beat.beats = 1;
1478                         }
1479
1480                         next_beat_pos = _session->tempo_map().frame_time(next_beat);
1481
1482                         frame_skip = (framepos_t) floor (frame_skip_error = (_session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1483                         frame_skip_error -= frame_skip;
1484                         skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);
1485
1486                         pos = (*i).frame + frame_skip;
1487                         accumulated_error = frame_skip_error;
1488
1489                         tick = skip;
1490
1491                         for (t = 0; (tick < Meter::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1492
1493                                 if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1494                                         i_am_accented = true;
1495                                 }
1496
1497                                 if (i_am_accented && (pos > bbt_position_of_helper)){
1498                                         snprintf (buf, sizeof(buf), "%" PRIu32, tick);
1499                                 } else {
1500                                         snprintf (buf, sizeof(buf), " ");
1501                                 }
1502
1503                                 (*marks)[n].label = g_strdup (buf);
1504
1505                                 /* Error compensation for float to framepos_t*/
1506                                 accumulated_error += frame_skip_error;
1507                                 if (accumulated_error > 1) {
1508                                         pos += 1;
1509                                         accumulated_error -= 1.0f;
1510                                 }
1511
1512                                 (*marks)[n].position = pos;
1513
1514                                 if ((bbt_beat_subdivision > 4) && i_am_accented) {
1515                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1516                                 } else {
1517                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1518                                 }
1519                                 i_am_accented = false;
1520                                 n++;
1521                         }
1522                 }
1523
1524           break;
1525
1526         case bbt_show_ticks_super_detail:
1527
1528                 beats = current_bbt_points->size();
1529                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1530
1531                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1532                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1533
1534                 (*marks)[0].label = g_strdup(" ");
1535                 (*marks)[0].position = lower;
1536                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1537
1538                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1539                         if  ((*i).type != TempoMap::Beat) {
1540                                   continue;
1541                         }
1542                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1543                                   snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1544                                   (*marks)[0].label = g_strdup (buf);
1545                                   helper_active = true;
1546                         } else {
1547
1548                                   if ((*i).beat == 1) {
1549                                           (*marks)[n].style = GtkCustomRulerMarkMajor;
1550                                           snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1551                                   } else {
1552                                           (*marks)[n].style = GtkCustomRulerMarkMinor;
1553                                           snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1554                                   }
1555                                   if (((*i).frame < bbt_position_of_helper) && helper_active) {
1556                                           snprintf (buf, sizeof(buf), " ");
1557                                   }
1558                                   (*marks)[n].label =  g_strdup (buf);
1559                                   (*marks)[n].position = (*i).frame;
1560                                   n++;
1561                         }
1562
1563                         /* Add the tick marks */
1564
1565                         /* Find the next beat */
1566
1567                         next_beat.beats = (*i).beat;
1568                         next_beat.bars = (*i).bar;
1569
1570                         if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1571                                   next_beat.beats += 1;
1572                         } else {
1573                                   next_beat.bars += 1;
1574                                   next_beat.beats = 1;
1575                         }
1576
1577                         next_beat_pos = _session->tempo_map().frame_time(next_beat);
1578
1579                         frame_skip = (framepos_t) floor (frame_skip_error = (_session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1580                         frame_skip_error -= frame_skip;
1581                         skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);
1582
1583                         pos = (*i).frame + frame_skip;
1584                         accumulated_error = frame_skip_error;
1585
1586                         tick = skip;
1587
1588                         for (t = 0; (tick < Meter::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1589
1590                                   if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1591                                           i_am_accented = true;
1592                                   }
1593
1594                                   if (pos > bbt_position_of_helper) {
1595                                           snprintf (buf, sizeof(buf), "%" PRIu32, tick);
1596                                   } else {
1597                                           snprintf (buf, sizeof(buf), " ");
1598                                   }
1599
1600                                   (*marks)[n].label = g_strdup (buf);
1601
1602                                   /* Error compensation for float to framepos_t*/
1603                                   accumulated_error += frame_skip_error;
1604                                   if (accumulated_error > 1) {
1605                                           pos += 1;
1606                                           accumulated_error -= 1.0f;
1607                                   }
1608
1609                                   (*marks)[n].position = pos;
1610
1611                                   if ((bbt_beat_subdivision > 4) && i_am_accented) {
1612                                           (*marks)[n].style = GtkCustomRulerMarkMinor;
1613                                   } else {
1614                                           (*marks)[n].style = GtkCustomRulerMarkMicro;
1615                                   }
1616                                   i_am_accented = false;
1617                                   n++;
1618                         }
1619                 }
1620
1621           break;
1622
1623         case bbt_over:
1624                         bbt_nmarks = 1;
1625                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1626                         snprintf (buf, sizeof(buf), "cannot handle %" PRIu32 " bars", bbt_bars );
1627                         (*marks)[0].style = GtkCustomRulerMarkMajor;
1628                         (*marks)[0].label = g_strdup (buf);
1629                         (*marks)[0].position = lower;
1630                         n = 1;
1631
1632           break;
1633
1634         case bbt_show_64:
1635                         bbt_nmarks = (gint) (bbt_bars / 64) + 1;
1636                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1637                         for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; i++) {
1638                                 if ((*i).type == TempoMap::Bar)  {
1639                                         if ((*i).bar % 64 == 1) {
1640                                                 if ((*i).bar % 256 == 1) {
1641                                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1642                                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1643                                                 } else {
1644                                                         snprintf (buf, sizeof(buf), " ");
1645                                                         if ((*i).bar % 256 == 129)  {
1646                                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1647                                                         } else {
1648                                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1649                                                         }
1650                                                 }
1651                                                 (*marks)[n].label = g_strdup (buf);
1652                                                 (*marks)[n].position = (*i).frame;
1653                                                 n++;
1654                                         }
1655                                 }
1656                         }
1657                         break;
1658
1659         case bbt_show_16:
1660                 bbt_nmarks = (bbt_bars / 16) + 1;
1661                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1662                 for (n = 0,  i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; i++) {
1663                         if ((*i).type == TempoMap::Bar)  {
1664                           if ((*i).bar % 16 == 1) {
1665                                 if ((*i).bar % 64 == 1) {
1666                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1667                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1668                                 } else {
1669                                         snprintf (buf, sizeof(buf), " ");
1670                                         if ((*i).bar % 64 == 33)  {
1671                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1672                                         } else {
1673                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1674                                         }
1675                                 }
1676                                 (*marks)[n].label = g_strdup (buf);
1677                                 (*marks)[n].position = (*i).frame;
1678                                 n++;
1679                           }
1680                         }
1681                 }
1682           break;
1683
1684         case bbt_show_4:
1685                 bbt_nmarks = (bbt_bars / 4) + 1;
1686                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1687                 for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; ++i) {
1688                         if ((*i).type == TempoMap::Bar)  {
1689                           if ((*i).bar % 4 == 1) {
1690                                 if ((*i).bar % 16 == 1) {
1691                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1692                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1693                                 } else {
1694                                         snprintf (buf, sizeof(buf), " ");
1695                                         if ((*i).bar % 16 == 9)  {
1696                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1697                                         } else {
1698                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1699                                         }
1700                                 }
1701                                 (*marks)[n].label = g_strdup (buf);
1702                                 (*marks)[n].position = (*i).frame;
1703                                 n++;
1704                           }
1705                         }
1706                 }
1707           break;
1708
1709         case bbt_show_1:
1710   //    default:
1711                 bbt_nmarks = bbt_bars + 2;
1712                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks );
1713                 for (n = 0,  i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; i++) {
1714                         if ((*i).type == TempoMap::Bar)  {
1715                           if ((*i).bar % 4 == 1) {
1716                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1717                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1718                           } else {
1719                                 snprintf (buf, sizeof(buf), " ");
1720                                 if ((*i).bar % 4 == 3)  {
1721                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1722                                 } else {
1723                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1724                                 }
1725                           }
1726                         (*marks)[n].label = g_strdup (buf);
1727                         (*marks)[n].position = (*i).frame;
1728                         n++;
1729                         }
1730                 }
1731
1732         break;
1733
1734         }
1735
1736         return n; //return the actual number of marks made, since we might have skipped some from fractional time signatures
1737
1738 }
1739
1740 gint
1741 Editor::metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint /*maxchars*/)
1742 {
1743         framepos_t mark_interval;
1744         framepos_t pos;
1745         framepos_t ilower = (framepos_t) floor (lower);
1746         framepos_t iupper = (framepos_t) floor (upper);
1747         gchar buf[16];
1748         gint nmarks;
1749         gint n;
1750
1751         if (_session == 0) {
1752                 return 0;
1753         }
1754
1755         mark_interval = (iupper - ilower) / 5;
1756         if (mark_interval > _session->frame_rate()) {
1757                 mark_interval -= mark_interval % _session->frame_rate();
1758         } else {
1759                 mark_interval = _session->frame_rate() / (_session->frame_rate() / mark_interval ) ;
1760         }
1761         nmarks = 5;
1762         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1763         for (n = 0, pos = ilower; n < nmarks; pos += mark_interval, ++n) {
1764                 snprintf (buf, sizeof(buf), "%" PRIi64, pos);
1765                 (*marks)[n].label = g_strdup (buf);
1766                 (*marks)[n].position = pos;
1767                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1768         }
1769
1770         return nmarks;
1771 }
1772
1773 static void
1774 sample_to_clock_parts ( framepos_t sample,
1775                         framepos_t sample_rate,
1776                         long *hrs_p,
1777                         long *mins_p,
1778                         long *secs_p,
1779                         long *millisecs_p)
1780
1781 {
1782         framepos_t left;
1783         long hrs;
1784         long mins;
1785         long secs;
1786         long millisecs;
1787
1788         left = sample;
1789         hrs = left / (sample_rate * 60 * 60);
1790         left -= hrs * sample_rate * 60 * 60;
1791         mins = left / (sample_rate * 60);
1792         left -= mins * sample_rate * 60;
1793         secs = left / sample_rate;
1794         left -= secs * sample_rate;
1795         millisecs = left * 1000 / sample_rate;
1796
1797         *millisecs_p = millisecs;
1798         *secs_p = secs;
1799         *mins_p = mins;
1800         *hrs_p = hrs;
1801
1802         return;
1803 }
1804
1805 void
1806 Editor::set_minsec_ruler_scale (gdouble lower, gdouble upper)
1807 {
1808         framepos_t range;
1809         framepos_t fr;
1810         framepos_t spacer;
1811
1812         if (_session == 0) {
1813                 return;
1814         }
1815
1816         fr = _session->frame_rate();
1817
1818         /* to prevent 'flashing' */
1819         if (lower > (spacer = (framepos_t)(128 * Editor::get_current_zoom ()))) {
1820                 lower -= spacer;
1821         } else {
1822                 lower = 0;
1823         }
1824         upper += spacer;
1825         range = (framepos_t) (upper - lower);
1826
1827         if (range <  (fr / 50)) {
1828                 minsec_mark_interval =  fr / 1000; /* show 1/1000 seconds */
1829                 minsec_ruler_scale = minsec_show_frames;
1830                 minsec_mark_modulo = 10;
1831         } else if (range <= (fr / 10)) { /* 0-0.1 second */
1832                 minsec_mark_interval = fr / 1000; /* show 1/1000 seconds */
1833                 minsec_ruler_scale = minsec_show_frames;
1834                 minsec_mark_modulo = 10;
1835         } else if (range <= (fr / 2)) { /* 0-0.5 second */
1836                 minsec_mark_interval = fr / 100;  /* show 1/100 seconds */
1837                 minsec_ruler_scale = minsec_show_frames;
1838                 minsec_mark_modulo = 100;
1839         } else if (range <= fr) { /* 0-1 second */
1840                 minsec_mark_interval = fr / 10;  /* show 1/10 seconds */
1841                 minsec_ruler_scale = minsec_show_frames;
1842                 minsec_mark_modulo = 200;
1843         } else if (range <= 2 * fr) { /* 1-2 seconds */
1844                 minsec_mark_interval = fr / 10; /* show 1/10 seconds */
1845                 minsec_ruler_scale = minsec_show_frames;
1846                 minsec_mark_modulo = 500;
1847         } else if (range <= 8 * fr) { /* 2-5 seconds */
1848                 minsec_mark_interval =  fr / 5; /* show 2 seconds */
1849                 minsec_ruler_scale = minsec_show_frames;
1850                 minsec_mark_modulo = 1000;
1851         } else if (range <= 16 * fr) { /* 8-16 seconds */
1852                 minsec_mark_interval =  fr; /* show 1 seconds */
1853                 minsec_ruler_scale = minsec_show_seconds;
1854                 minsec_mark_modulo = 2;
1855         } else if (range <= 30 * fr) { /* 10-30 seconds */
1856                 minsec_mark_interval =  fr; /* show 1 seconds */
1857                 minsec_ruler_scale = minsec_show_seconds;
1858                 minsec_mark_modulo = 5;
1859         } else if (range <= 60 * fr) { /* 30-60 seconds */
1860                 minsec_mark_interval = fr; /* show 1 seconds */
1861                 minsec_ruler_scale = minsec_show_seconds;
1862                 minsec_mark_modulo = 5;
1863         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
1864                 minsec_mark_interval = 5 * fr; /* show 5 seconds */
1865                 minsec_ruler_scale = minsec_show_seconds;
1866                 minsec_mark_modulo = 3;
1867         } else if (range <= 4 * 60 * fr) { /* 4 minutes */
1868                 minsec_mark_interval = 5 * fr; /* show 10 seconds */
1869                 minsec_ruler_scale = minsec_show_seconds;
1870                 minsec_mark_modulo = 30;
1871         } else if (range <= 10 * 60 * fr) { /* 10 minutes */
1872                 minsec_mark_interval = 30 * fr; /* show 30 seconds */
1873                 minsec_ruler_scale = minsec_show_seconds;
1874                 minsec_mark_modulo = 120;
1875         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
1876                 minsec_mark_interval =  60 * fr; /* show 1 minute */
1877                 minsec_ruler_scale = minsec_show_minutes;
1878                 minsec_mark_modulo = 5;
1879         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
1880                 minsec_mark_interval = 2 * 60 * fr; /* show 2 minutes */
1881                 minsec_ruler_scale = minsec_show_minutes;
1882                 minsec_mark_modulo = 10;
1883         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
1884                 minsec_mark_interval = 5 * 60 * fr; /* show 10 minutes */
1885                 minsec_ruler_scale = minsec_show_minutes;
1886                 minsec_mark_modulo = 30;
1887         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
1888                 minsec_mark_interval = 20 * 60 * fr; /* show 20 minutes */
1889                 minsec_ruler_scale = minsec_show_minutes;
1890                 minsec_mark_modulo = 60;
1891         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
1892                 minsec_mark_interval =  60 * 60 * fr; /* show 60 minutes */
1893                 minsec_ruler_scale = minsec_show_hours;
1894                 minsec_mark_modulo = 2;
1895         } else {
1896
1897                 /* not possible if framepos_t is a 32 bit quantity */
1898
1899                 minsec_mark_interval = 4 * 60 * 60 * fr; /* show 4 hrs */
1900         }
1901         minsec_nmarks = 2 + (range / minsec_mark_interval);
1902 }
1903
1904 gint
1905 Editor::metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upper*/, gint /*maxchars*/)
1906 {
1907         framepos_t pos;
1908         framepos_t spacer;
1909         long hrs, mins, secs, millisecs;
1910         gchar buf[16];
1911         gint n;
1912
1913         if (_session == 0) {
1914                 return 0;
1915         }
1916
1917         /* to prevent 'flashing' */
1918         if (lower > (spacer = (framepos_t)(128 * Editor::get_current_zoom ()))) {
1919                 lower = lower - spacer;
1920         } else {
1921                 lower = 0;
1922         }
1923
1924         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * minsec_nmarks);
1925         pos = ((((framepos_t) floor(lower)) + (minsec_mark_interval/2))/minsec_mark_interval) * minsec_mark_interval;
1926         switch (minsec_ruler_scale) {
1927         case minsec_show_seconds:
1928                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1929                         sample_to_clock_parts (pos, _session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1930                         if (secs % minsec_mark_modulo == 0) {
1931                                 if (secs == 0) {
1932                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1933                                 } else {
1934                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1935                                 }
1936                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1937                         } else {
1938                                 snprintf (buf, sizeof(buf), " ");
1939                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1940                         }
1941                         (*marks)[n].label = g_strdup (buf);
1942                         (*marks)[n].position = pos;
1943                 }
1944           break;
1945         case minsec_show_minutes:
1946                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1947                         sample_to_clock_parts (pos, _session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1948                         if (mins % minsec_mark_modulo == 0) {
1949                                 if (mins == 0) {
1950                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1951                                 } else {
1952                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1953                                 }
1954                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1955                         } else {
1956                                 snprintf (buf, sizeof(buf), " ");
1957                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1958                         }
1959                         (*marks)[n].label = g_strdup (buf);
1960                         (*marks)[n].position = pos;
1961                 }
1962           break;
1963         case minsec_show_hours:
1964                  for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1965                         sample_to_clock_parts (pos, _session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1966                         if (hrs % minsec_mark_modulo == 0) {
1967                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1968                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1969                         } else {
1970                                 snprintf (buf, sizeof(buf), " ");
1971                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1972                         }
1973                         (*marks)[n].label = g_strdup (buf);
1974                         (*marks)[n].position = pos;
1975                 }
1976               break;
1977         case minsec_show_frames:
1978                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1979                         sample_to_clock_parts (pos, _session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1980                         if (millisecs % minsec_mark_modulo == 0) {
1981                                 if (secs == 0) {
1982                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1983                                 } else {
1984                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1985                                 }
1986                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1987                         } else {
1988                                 snprintf (buf, sizeof(buf), " ");
1989                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1990                         }
1991                         (*marks)[n].label = g_strdup (buf);
1992                         (*marks)[n].position = pos;
1993                 }
1994           break;
1995         }
1996
1997         return minsec_nmarks;
1998 }