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
  36 #include "gtkmm2ext/gtk_ui.h"
  37
  38 #include "editor.h"
  39 #include "editing.h"
  40 #include "actions.h"
  41 #include "gtk-custom-hruler.h"
  42 #include "gui_thread.h"
  43 #include "time_axis_view.h"
  44 #include "editor_drag.h"
  45 #include "editor_cursors.h"
  46
  47 #include "i18n.h"
  48
  49 using namespace ARDOUR;
  50 using namespace PBD;
  51 using namespace Gtk;
  52 using namespace Editing;
  53
  54 Editor *Editor::ruler_editor;
  55
  56 /* the order here must match the "metric" enums in editor.h */
  57
  58 GtkCustomMetric Editor::ruler_metrics[4] = {
  59         {1, Editor::_metric_get_timecode },
  60         {1, Editor::_metric_get_bbt },
  61         {1, Editor::_metric_get_samples },
  62         {1, Editor::_metric_get_minsec }
  63 };
  64
  65 void
  66 Editor::initialize_rulers ()
  67 {
  68         ruler_editor = this;
  69         ruler_grabbed_widget = 0;
  70
  71         _ruler_separator = new Gtk::HSeparator();
  72         _ruler_separator->set_size_request(-1, 2);
  73         _ruler_separator->set_name("TimebarPadding");
  74         _ruler_separator->show();
  75
  76         _minsec_ruler = gtk_custom_hruler_new ();
  77         minsec_ruler = Glib::wrap (_minsec_ruler);
  78         minsec_ruler->set_name ("MinSecRuler");
  79         minsec_ruler->set_size_request (-1, (int)timebar_height);
  80         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_minsec_ruler), &ruler_metrics[ruler_metric_minsec]);
  81         minsec_ruler->hide ();
  82         minsec_ruler->set_no_show_all();
  83
  84         _timecode_ruler = gtk_custom_hruler_new ();
  85         timecode_ruler = Glib::wrap (_timecode_ruler);
  86         timecode_ruler->set_name ("TimecodeRuler");
  87         timecode_ruler->set_size_request (-1, (int)timebar_height);
  88         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_timecode_ruler), &ruler_metrics[ruler_metric_timecode]);
  89         timecode_ruler->hide ();
  90         timecode_ruler->set_no_show_all();
  91         timecode_nmarks = 0;
  92
  93         _bbt_ruler = gtk_custom_hruler_new ();
  94         bbt_ruler = Glib::wrap (_bbt_ruler);
  95         bbt_ruler->set_name ("BBTRuler");
  96         bbt_ruler->set_size_request (-1, (int)timebar_height);
  97         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_bbt_ruler), &ruler_metrics[ruler_metric_bbt]);
  98         bbt_ruler->hide ();
  99         bbt_ruler->set_no_show_all();
 100         bbt_nmarks = 0;
 101
 102         _samples_ruler = gtk_custom_hruler_new ();
 103         samples_ruler = Glib::wrap (_samples_ruler);
 104         samples_ruler->set_name ("SamplesRuler");
 105         samples_ruler->set_size_request (-1, (int) timebar_height);
 106         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER (_samples_ruler), &ruler_metrics[ruler_metric_samples]);
 107         samples_ruler->hide ();
 108         samples_ruler->set_no_show_all ();
 109
 110         _bbt_ruler = gtk_custom_hruler_new ();
 111         bbt_ruler = Glib::wrap (_bbt_ruler);
 112         bbt_ruler->set_name ("BBTRuler");
 113         bbt_ruler->set_size_request (-1, (int)timebar_height);
 114         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_bbt_ruler), &ruler_metrics[ruler_metric_bbt]);
 115         bbt_ruler->hide ();
 116         bbt_ruler->set_no_show_all();
 117         minsec_ruler->hide ();
 118         minsec_ruler->set_no_show_all();
 119         minsec_nmarks = 0;
 120
 121         using namespace Box_Helpers;
 122         BoxList & ruler_lab_children =  ruler_label_vbox.children();
 123         BoxList & ruler_children =  time_canvas_vbox.children();
 124         BoxList & lab_children =  time_button_vbox.children();
 125
 126         BoxList::iterator canvaspos = ruler_children.begin();
 127
 128         lab_children.push_back (Element(meter_label, PACK_SHRINK, PACK_START));
 129         lab_children.push_back (Element(tempo_label, PACK_SHRINK, PACK_START));
 130         lab_children.push_back (Element(range_mark_label, PACK_SHRINK, PACK_START));
 131         lab_children.push_back (Element(transport_mark_label, PACK_SHRINK, PACK_START));
 132         lab_children.push_back (Element(cd_mark_label, PACK_SHRINK, PACK_START));
 133         lab_children.push_back (Element(mark_label, PACK_SHRINK, PACK_START));
 134         lab_children.push_back (Element(videotl_label, PACK_SHRINK, PACK_START));
 135
 136         ruler_lab_children.push_back (Element(minsec_label, PACK_SHRINK, PACK_START));
 137         ruler_children.insert (canvaspos, Element(*minsec_ruler, PACK_SHRINK, PACK_START));
 138         ruler_lab_children.push_back (Element(timecode_label, PACK_SHRINK, PACK_START));
 139         ruler_children.insert (canvaspos, Element(*timecode_ruler, PACK_SHRINK, PACK_START));
 140         ruler_lab_children.push_back (Element(samples_label, PACK_SHRINK, PACK_START));
 141         ruler_children.insert (canvaspos, Element (*samples_ruler, PACK_SHRINK, PACK_START));
 142         ruler_lab_children.push_back (Element(bbt_label, PACK_SHRINK, PACK_START));
 143         ruler_children.insert (canvaspos, Element(*bbt_ruler, PACK_SHRINK, PACK_START));
 144
 145         timecode_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 146         bbt_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 147         samples_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 148         minsec_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 149
 150         timecode_ruler->signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_release));
 151         bbt_ruler->signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_release));
 152         samples_ruler->signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_release));
 153         minsec_ruler->signal_button_release_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_release));
 154
 155         timecode_ruler->signal_button_press_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_press));
 156         bbt_ruler->signal_button_press_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_press));
 157         samples_ruler->signal_button_press_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_press));
 158         minsec_ruler->signal_button_press_event().connect (sigc::mem_fun(*this, &Editor::ruler_button_press));
 159
 160         timecode_ruler->signal_motion_notify_event().connect (sigc::mem_fun(*this, &Editor::ruler_mouse_motion));
 161         bbt_ruler->signal_motion_notify_event().connect (sigc::mem_fun(*this, &Editor::ruler_mouse_motion));
 162         samples_ruler->signal_motion_notify_event().connect (sigc::mem_fun(*this, &Editor::ruler_mouse_motion));
 163         minsec_ruler->signal_motion_notify_event().connect (sigc::mem_fun(*this, &Editor::ruler_mouse_motion));
 164
 165         timecode_ruler->signal_scroll_event().connect (sigc::mem_fun(*this, &Editor::ruler_scroll));
 166         bbt_ruler->signal_scroll_event().connect (sigc::mem_fun(*this, &Editor::ruler_scroll));
 167         samples_ruler->signal_scroll_event().connect (sigc::mem_fun(*this, &Editor::ruler_scroll));
 168         minsec_ruler->signal_scroll_event().connect (sigc::mem_fun(*this, &Editor::ruler_scroll));
 169
 170         visible_timebars = 0; /*this will be changed below */
 171         canvas_timebars_vsize = 0;
 172 }
 173
 174 bool
 175 Editor::ruler_scroll (GdkEventScroll* event)
 176 {
 177         framepos_t xdelta;
 178         int direction = event->direction;
 179         bool handled = false;
 180
 181         switch (direction) {
 182         case GDK_SCROLL_UP:
 183                 temporal_zoom_step (false);
 184                 handled = true;
 185                 break;
 186
 187         case GDK_SCROLL_DOWN:
 188                 temporal_zoom_step (true);
 189                 handled = true;
 190                 break;
 191
 192         case GDK_SCROLL_LEFT:
 193                 xdelta = (current_page_frames() / 2);
 194                 if (leftmost_frame > xdelta) {
 195                         reset_x_origin (leftmost_frame - xdelta);
 196                 } else {
 197                         reset_x_origin (0);
 198                 }
 199                 handled = true;
 200                 break;
 201
 202         case GDK_SCROLL_RIGHT:
 203                 xdelta = (current_page_frames() / 2);
 204                 if (max_framepos - xdelta > leftmost_frame) {
 205                         reset_x_origin (leftmost_frame + xdelta);
 206                 } else {
 207                         reset_x_origin (max_framepos - current_page_frames());
 208                 }
 209                 handled = true;
 210                 break;
 211
 212         default:
 213                 /* what? */
 214                 break;
 215         }
 216
 217         return handled;
 218 }
 219
 220
 221 bool
 222 Editor::ruler_button_press (GdkEventButton* ev)
 223 {
 224         if (_session == 0) {
 225                 return false;
 226         }
 227
 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 (samples_ruler->is_realized() && ev->window == samples_ruler->get_window()->gobj()) {
 235                 grab_widget = samples_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 bool
 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 bool
 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 bool
 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"), sigc::bind (sigc::mem_fun (*this, &Editor::mouse_add_new_range), where)));
 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 (SeparatorElem ());
 365                 break;
 366
 367         case MeterBarItem:
 368                 ruler_items.push_back (MenuElem (_("New Meter"), sigc::bind ( sigc::mem_fun(*this, &Editor::mouse_add_new_meter_event), where)));
 369                 ruler_items.push_back (SeparatorElem ());
 370                 break;
 371
 372         case VideoBarItem:
 373                 ruler_items.push_back (MenuElem (_("Timeline height")));
 374                 static_cast<MenuItem*>(&ruler_items.back())->set_sensitive(false);
 375                 ruler_items.push_back (CheckMenuElem (_("Large"),  sigc::bind ( sigc::mem_fun(*this, &Editor::set_video_timeline_height), 6)));
 376                 if (videotl_bar_height == 6) { static_cast<CheckMenuItem*>(&ruler_items.back())->set_active(true);}
 377                 ruler_items.push_back (CheckMenuElem (_("Normal"), sigc::bind ( sigc::mem_fun(*this, &Editor::set_video_timeline_height), 4)));
 378                 if (videotl_bar_height == 4) { static_cast<CheckMenuItem*>(&ruler_items.back())->set_active(true);}
 379                 ruler_items.push_back (CheckMenuElem (_("Small"),  sigc::bind ( sigc::mem_fun(*this, &Editor::set_video_timeline_height), 3)));
 380                 if (videotl_bar_height == 3) { static_cast<CheckMenuItem*>(&ruler_items.back())->set_active(true);}
 381                 ruler_items.push_back (SeparatorElem ());
 382
 383                 ruler_items.push_back (MenuElem (_("Align Video Track")));
 384                 static_cast<MenuItem*>(&ruler_items.back())->set_sensitive(false);
 385
 386                 ruler_items.push_back (CheckMenuElem (_("Lock")));
 387                 {
 388                 CheckMenuItem* vtl_lock = static_cast<CheckMenuItem*>(&ruler_items.back());
 389                 vtl_lock->set_active(is_video_timeline_locked());
 390                 vtl_lock->signal_activate().connect (sigc::mem_fun(*this, &Editor::toggle_video_timeline_locked));
 391                 }
 392
 393                 ruler_items.push_back (SeparatorElem ());
 394                 break;
 395
 396         default:
 397                 break;
 398         }
 399
 400         Glib::RefPtr<Action> action;
 401
 402         action = ActionManager::get_action ("Rulers", "toggle-minsec-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-timecode-ruler");
 408                 if (action) {
 409                         ruler_items.push_back (MenuElem (*action->create_menu_item()));
 410                 }
 411         }
 412         action = ActionManager::get_action ("Rulers", "toggle-samples-ruler");
 413         if (action) {
 414                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 415         }
 416         action = ActionManager::get_action ("Rulers", "toggle-bbt-ruler");
 417         if (action) {
 418                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 419         }
 420         action = ActionManager::get_action ("Rulers", "toggle-meter-ruler");
 421         if (action) {
 422                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 423         }
 424         action = ActionManager::get_action ("Rulers", "toggle-tempo-ruler");
 425         if (action) {
 426                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 427         }
 428         if (!Profile->get_sae()) {
 429                 action = ActionManager::get_action ("Rulers", "toggle-range-ruler");
 430                 if (action) {
 431                         ruler_items.push_back (MenuElem (*action->create_menu_item()));
 432                 }
 433         }
 434         action = ActionManager::get_action ("Rulers", "toggle-loop-punch-ruler");
 435         if (action) {
 436                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 437         }
 438         action = ActionManager::get_action ("Rulers", "toggle-cd-marker-ruler");
 439         if (action) {
 440                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 441         }
 442         action = ActionManager::get_action ("Rulers", "toggle-marker-ruler");
 443         if (action) {
 444                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 445         }
 446         action = ActionManager::get_action ("Rulers", "toggle-video-ruler");
 447         if (action) {
 448                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 449         }
 450
 451         editor_ruler_menu->popup (1, gtk_get_current_event_time());
 452
 453         no_ruler_shown_update = false;
 454 }
 455
 456 void
 457 Editor::store_ruler_visibility ()
 458 {
 459         XMLNode* node = new XMLNode(X_("RulerVisibility"));
 460
 461         node->add_property (X_("timecode"), ruler_timecode_action->get_active() ? "yes": "no");
 462         node->add_property (X_("bbt"), ruler_bbt_action->get_active() ? "yes": "no");
 463         node->add_property (X_("samples"), ruler_samples_action->get_active() ? "yes": "no");
 464         node->add_property (X_("minsec"), ruler_minsec_action->get_active() ? "yes": "no");
 465         node->add_property (X_("tempo"), ruler_tempo_action->get_active() ? "yes": "no");
 466         node->add_property (X_("meter"), ruler_meter_action->get_active() ? "yes": "no");
 467         node->add_property (X_("marker"), ruler_marker_action->get_active() ? "yes": "no");
 468         node->add_property (X_("rangemarker"), ruler_range_action->get_active() ? "yes": "no");
 469         node->add_property (X_("transportmarker"), ruler_loop_punch_action->get_active() ? "yes": "no");
 470         node->add_property (X_("cdmarker"), ruler_cd_marker_action->get_active() ? "yes": "no");
 471         node->add_property (X_("videotl"), ruler_video_action->get_active() ? "yes": "no");
 472
 473         _session->add_extra_xml (*node);
 474         _session->set_dirty ();
 475 }
 476
 477 void
 478 Editor::restore_ruler_visibility ()
 479 {
 480         XMLProperty* prop;
 481         XMLNode * node = _session->extra_xml (X_("RulerVisibility"));
 482
 483         no_ruler_shown_update = true;
 484
 485         if (node) {
 486                 if ((prop = node->property ("timecode")) != 0) {
 487                         if (string_is_affirmative (prop->value())) {
 488                                 ruler_timecode_action->set_active (true);
 489                         } else {
 490                                 ruler_timecode_action->set_active (false);
 491                         }
 492                 }
 493                 if ((prop = node->property ("bbt")) != 0) {
 494                         if (string_is_affirmative (prop->value())) {
 495                                 ruler_bbt_action->set_active (true);
 496                         } else {
 497                                 ruler_bbt_action->set_active (false);
 498                         }
 499                 }
 500                 if ((prop = node->property ("samples")) != 0) {
 501                         if (string_is_affirmative (prop->value())) {
 502                                 ruler_samples_action->set_active (true);
 503                         } else {
 504                                 ruler_samples_action->set_active (false);
 505                         }
 506                 }
 507                 if ((prop = node->property ("minsec")) != 0) {
 508                         if (string_is_affirmative (prop->value())) {
 509                                 ruler_minsec_action->set_active (true);
 510                         } else {
 511                                 ruler_minsec_action->set_active (false);
 512                         }
 513                 }
 514                 if ((prop = node->property ("tempo")) != 0) {
 515                         if (string_is_affirmative (prop->value())) {
 516                                 ruler_tempo_action->set_active (true);
 517                         } else {
 518                                 ruler_tempo_action->set_active (false);
 519                         }
 520                 }
 521                 if ((prop = node->property ("meter")) != 0) {
 522                         if (string_is_affirmative (prop->value())) {
 523                                 ruler_meter_action->set_active (true);
 524                         } else {
 525                                 ruler_meter_action->set_active (false);
 526                         }
 527                 }
 528                 if ((prop = node->property ("marker")) != 0) {
 529                         if (string_is_affirmative (prop->value())) {
 530                                 ruler_marker_action->set_active (true);
 531                         } else {
 532                                 ruler_marker_action->set_active (false);
 533                         }
 534                 }
 535                 if ((prop = node->property ("rangemarker")) != 0) {
 536                         if (string_is_affirmative (prop->value())) {
 537                                 ruler_range_action->set_active (true);
 538                         } else {
 539                                 ruler_range_action->set_active (false);
 540                         }
 541                 }
 542
 543                 if ((prop = node->property ("transportmarker")) != 0) {
 544                         if (string_is_affirmative (prop->value())) {
 545                                 ruler_loop_punch_action->set_active (true);
 546                         } else {
 547                                 ruler_loop_punch_action->set_active (false);
 548                         }
 549                 }
 550
 551                 if ((prop = node->property ("cdmarker")) != 0) {
 552                         if (string_is_affirmative (prop->value())) {
 553                                 ruler_cd_marker_action->set_active (true);
 554                         } else {
 555                                 ruler_cd_marker_action->set_active (false);
 556                         }
 557
 558                 } else {
 559                         // this _session doesn't yet know about the cdmarker ruler
 560                         // as a benefit to the user who doesn't know the feature exists, show the ruler if
 561                         // any cd marks exist
 562                         ruler_cd_marker_action->set_active (false);
 563                         const Locations::LocationList & locs = _session->locations()->list();
 564                         for (Locations::LocationList::const_iterator i = locs.begin(); i != locs.end(); ++i) {
 565                                 if ((*i)->is_cd_marker()) {
 566                                         ruler_cd_marker_action->set_active (true);
 567                                         break;
 568                                 }
 569                         }
 570                 }
 571
 572                 if ((prop = node->property ("videotl")) != 0) {
 573                         if (string_is_affirmative (prop->value())) {
 574                                 ruler_video_action->set_active (true);
 575                         } else {
 576                                 ruler_video_action->set_active (false);
 577                         }
 578                 }
 579
 580         }
 581
 582         no_ruler_shown_update = false;
 583         update_ruler_visibility ();
 584 }
 585
 586 void
 587 Editor::update_ruler_visibility ()
 588 {
 589         int visible_rulers = 0;
 590
 591         if (no_ruler_shown_update) {
 592                 return;
 593         }
 594
 595         visible_timebars = 0;
 596
 597         if (ruler_minsec_action->get_active()) {
 598                 visible_rulers++;
 599                 minsec_label.show ();
 600                 minsec_ruler->show ();
 601         } else {
 602                 minsec_label.hide ();
 603                 minsec_ruler->hide ();
 604         }
 605
 606         if (ruler_timecode_action->get_active()) {
 607                 visible_rulers++;
 608                 timecode_label.show ();
 609                 timecode_ruler->show ();
 610         } else {
 611                 timecode_label.hide ();
 612                 timecode_ruler->hide ();
 613         }
 614
 615         if (ruler_samples_action->get_active()) {
 616                 visible_rulers++;
 617                 samples_label.show ();
 618                 samples_ruler->show ();
 619         } else {
 620                 samples_label.hide ();
 621                 samples_ruler->hide ();
 622         }
 623
 624         if (ruler_bbt_action->get_active()) {
 625                 visible_rulers++;
 626                 bbt_label.show ();
 627                 bbt_ruler->show ();
 628         } else {
 629                 bbt_label.hide ();
 630                 bbt_ruler->hide ();
 631         }
 632
 633         double tbpos = 0.0;
 634         double tbgpos = 0.0;
 635         double old_unit_pos;
 636
 637 #ifdef GTKOSX
 638         /* gtk update probs require this (damn) */
 639         meter_label.hide();
 640         tempo_label.hide();
 641         range_mark_label.hide();
 642         transport_mark_label.hide();
 643         cd_mark_label.hide();
 644         mark_label.hide();
 645         videotl_label.hide();
 646 #endif
 647         if (ruler_meter_action->get_active()) {
 648                 old_unit_pos = meter_group->property_y();
 649                 if (tbpos != old_unit_pos) {
 650                         meter_group->move ( 0.0, tbpos - old_unit_pos);
 651                 }
 652                 old_unit_pos = meter_bar_group->property_y();
 653                 if (tbgpos != old_unit_pos) {
 654                         meter_bar_group->move ( 0.0, tbgpos - old_unit_pos);
 655                 }
 656                 meter_bar_group->show();
 657                 meter_group->show();
 658                 meter_label.show();
 659                 tbpos += timebar_height;
 660                 tbgpos += timebar_height;
 661                 visible_timebars++;
 662         } else {
 663                 meter_bar_group->hide();
 664                 meter_group->hide();
 665                 meter_label.hide();
 666         }
 667
 668         if (ruler_tempo_action->get_active()) {
 669                 old_unit_pos = tempo_group->property_y();
 670                 if (tbpos != old_unit_pos) {
 671                         tempo_group->move(0.0, tbpos - old_unit_pos);
 672                 }
 673                 old_unit_pos = tempo_bar_group->property_y();
 674                 if (tbgpos != old_unit_pos) {
 675                         tempo_bar_group->move ( 0.0, tbgpos - old_unit_pos);
 676                 }
 677                 tempo_bar_group->show();
 678                 tempo_group->show();
 679                 tempo_label.show();
 680                 tbpos += timebar_height;
 681                 tbgpos += timebar_height;
 682                 visible_timebars++;
 683         } else {
 684                 tempo_bar_group->hide();
 685                 tempo_group->hide();
 686                 tempo_label.hide();
 687         }
 688
 689         if (!Profile->get_sae() && ruler_range_action->get_active()) {
 690                 old_unit_pos = range_marker_group->property_y();
 691                 if (tbpos != old_unit_pos) {
 692                         range_marker_group->move (0.0, tbpos - old_unit_pos);
 693                 }
 694                 old_unit_pos = range_marker_bar_group->property_y();
 695                 if (tbgpos != old_unit_pos) {
 696                         range_marker_bar_group->move (0.0, tbgpos - old_unit_pos);
 697                 }
 698                 range_marker_bar_group->show();
 699                 range_marker_group->show();
 700                 range_mark_label.show();
 701
 702                 tbpos += timebar_height;
 703                 tbgpos += timebar_height;
 704                 visible_timebars++;
 705         } else {
 706                 range_marker_bar_group->hide();
 707                 range_marker_group->hide();
 708                 range_mark_label.hide();
 709         }
 710
 711         if (ruler_loop_punch_action->get_active()) {
 712                 old_unit_pos = transport_marker_group->property_y();
 713                 if (tbpos != old_unit_pos) {
 714                         transport_marker_group->move ( 0.0, tbpos - old_unit_pos);
 715                 }
 716                 old_unit_pos = transport_marker_bar_group->property_y();
 717                 if (tbgpos != old_unit_pos) {
 718                         transport_marker_bar_group->move ( 0.0, tbgpos - old_unit_pos);
 719                 }
 720                 transport_marker_bar_group->show();
 721                 transport_marker_group->show();
 722                 transport_mark_label.show();
 723                 tbpos += timebar_height;
 724                 tbgpos += timebar_height;
 725                 visible_timebars++;
 726         } else {
 727                 transport_marker_bar_group->hide();
 728                 transport_marker_group->hide();
 729                 transport_mark_label.hide();
 730         }
 731
 732         if (ruler_cd_marker_action->get_active()) {
 733                 old_unit_pos = cd_marker_group->property_y();
 734                 if (tbpos != old_unit_pos) {
 735                         cd_marker_group->move (0.0, tbpos - old_unit_pos);
 736                 }
 737                 old_unit_pos = cd_marker_bar_group->property_y();
 738                 if (tbgpos != old_unit_pos) {
 739                         cd_marker_bar_group->move (0.0, tbgpos - old_unit_pos);
 740                 }
 741                 cd_marker_bar_group->show();
 742                 cd_marker_group->show();
 743                 cd_mark_label.show();
 744                 tbpos += timebar_height;
 745                 tbgpos += timebar_height;
 746                 visible_timebars++;
 747                 // make sure all cd markers show up in their respective places
 748                 update_cd_marker_display();
 749         } else {
 750                 cd_marker_bar_group->hide();
 751                 cd_marker_group->hide();
 752                 cd_mark_label.hide();
 753                 // make sure all cd markers show up in their respective places
 754                 update_cd_marker_display();
 755         }
 756
 757         if (ruler_marker_action->get_active()) {
 758                 old_unit_pos = marker_group->property_y();
 759                 if (tbpos != old_unit_pos) {
 760                         marker_group->move ( 0.0, tbpos - old_unit_pos);
 761                 }
 762                 old_unit_pos = marker_bar_group->property_y();
 763                 if (tbgpos != old_unit_pos) {
 764                         marker_bar_group->move ( 0.0, tbgpos - old_unit_pos);
 765                 }
 766                 marker_bar_group->show();
 767                 marker_group->show();
 768                 mark_label.show();
 769                 tbpos += timebar_height;
 770                 tbgpos += timebar_height;
 771                 visible_timebars++;
 772         } else {
 773                 marker_bar_group->hide();
 774                 marker_group->hide();
 775                 mark_label.hide();
 776         }
 777
 778         if (ruler_video_action->get_active()) {
 779                 old_unit_pos = videotl_group->property_y();
 780                 if (tbpos != old_unit_pos) {
 781                         videotl_group->move ( 0.0, tbpos - old_unit_pos);
 782                 }
 783                 old_unit_pos = videotl_bar_group->property_y();
 784                 if (tbgpos != old_unit_pos) {
 785                         videotl_bar_group->move ( 0.0, tbgpos - old_unit_pos);
 786                 }
 787                 videotl_bar_group->show();
 788                 videotl_group->show();
 789                 videotl_label.show();
 790                 tbpos += timebar_height * videotl_bar_height;
 791                 tbgpos += timebar_height * videotl_bar_height;
 792                 visible_timebars+=videotl_bar_height;
 793           queue_visual_videotimeline_update();
 794         } else {
 795                 videotl_bar_group->hide();
 796                 videotl_group->hide();
 797                 videotl_label.hide();
 798           update_video_timeline(true);
 799         }
 800
 801         gdouble old_canvas_timebars_vsize = canvas_timebars_vsize;
 802         canvas_timebars_vsize = (timebar_height * visible_timebars) - 1;
 803         gdouble vertical_pos_delta = canvas_timebars_vsize - old_canvas_timebars_vsize;
 804         vertical_adjustment.set_upper(vertical_adjustment.get_upper() + vertical_pos_delta);
 805         full_canvas_height += vertical_pos_delta;
 806
 807         if (vertical_adjustment.get_value() != 0 && (vertical_adjustment.get_value() + _canvas_height >= full_canvas_height)) {
 808                 /*if we're at the bottom of the canvas, don't move the _trackview_group*/
 809                 vertical_adjustment.set_value (full_canvas_height - _canvas_height + 1);
 810         } else {
 811                 _trackview_group->property_y () = - get_trackview_group_vertical_offset ();
 812                 _background_group->property_y () = - get_trackview_group_vertical_offset ();
 813                 _trackview_group->move (0, 0);
 814                 _background_group->move (0, 0);
 815                 last_trackview_group_vertical_offset = get_trackview_group_vertical_offset ();
 816         }
 817
 818         gdouble bottom_track_pos = vertical_adjustment.get_value() + _canvas_height - canvas_timebars_vsize;
 819         std::pair<TimeAxisView*, int> const p = trackview_by_y_position (bottom_track_pos);
 820         if (p.first) {
 821                 p.first->clip_to_viewport ();
 822         }
 823
 824         ruler_label_vbox.set_size_request (-1, (int)(timebar_height * visible_rulers));
 825         time_canvas_vbox.set_size_request (-1,-1);
 826
 827         compute_fixed_ruler_scale ();
 828         update_fixed_rulers();
 829         redisplay_tempo (false);
 830
 831         /* Changing ruler visibility means that any lines on markers might need updating */
 832         for (LocationMarkerMap::iterator i = location_markers.begin(); i != location_markers.end(); ++i) {
 833                 i->second->setup_lines ();
 834         }
 835 }
 836
 837 void
 838 Editor::update_just_timecode ()
 839 {
 840         ENSURE_GUI_THREAD (*this, &Editor::update_just_timecode)
 841
 842         if (_session == 0) {
 843                 return;
 844         }
 845
 846         framepos_t rightmost_frame = leftmost_frame + current_page_frames();
 847
 848         if (ruler_timecode_action->get_active()) {
 849                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_timecode_ruler), leftmost_frame, rightmost_frame,
 850                                             leftmost_frame, _session->current_end_frame());
 851         }
 852 }
 853
 854 void
 855 Editor::compute_fixed_ruler_scale ()
 856 {
 857         if (_session == 0) {
 858                 return;
 859         }
 860
 861         if (ruler_timecode_action->get_active()) {
 862                 set_timecode_ruler_scale (leftmost_frame, leftmost_frame + current_page_frames());
 863         }
 864
 865         if (ruler_minsec_action->get_active()) {
 866                 set_minsec_ruler_scale (leftmost_frame, leftmost_frame + current_page_frames());
 867         }
 868
 869         if (ruler_samples_action->get_active()) {
 870                 set_samples_ruler_scale (leftmost_frame, leftmost_frame + current_page_frames());
 871         }
 872 }
 873
 874 void
 875 Editor::update_fixed_rulers ()
 876 {
 877         framepos_t rightmost_frame;
 878
 879         if (_session == 0) {
 880                 return;
 881         }
 882
 883         compute_fixed_ruler_scale ();
 884
 885         ruler_metrics[ruler_metric_timecode].units_per_pixel = frames_per_unit;
 886         ruler_metrics[ruler_metric_samples].units_per_pixel = frames_per_unit;
 887         ruler_metrics[ruler_metric_minsec].units_per_pixel = frames_per_unit;
 888
 889         rightmost_frame = leftmost_frame + current_page_frames();
 890
 891         /* these force a redraw, which in turn will force execution of the metric callbacks
 892            to compute the relevant ticks to display.
 893         */
 894
 895         if (ruler_timecode_action->get_active()) {
 896                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_timecode_ruler), leftmost_frame, rightmost_frame,
 897                                             leftmost_frame, _session->current_end_frame());
 898         }
 899
 900         if (ruler_samples_action->get_active()) {
 901                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER (_samples_ruler), leftmost_frame, rightmost_frame,
 902                                             leftmost_frame, _session->current_end_frame());
 903         }
 904
 905         if (ruler_minsec_action->get_active()) {
 906                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_minsec_ruler), leftmost_frame, rightmost_frame,
 907                                             leftmost_frame, _session->current_end_frame());
 908         }
 909 }
 910
 911 void
 912 Editor::update_tempo_based_rulers (ARDOUR::TempoMap::BBTPointList::const_iterator& begin,
 913                                     ARDOUR::TempoMap::BBTPointList::const_iterator& end)
 914 {
 915         if (_session == 0) {
 916                 return;
 917         }
 918
 919         compute_bbt_ruler_scale (leftmost_frame, leftmost_frame+current_page_frames(),
 920                                  begin, end);
 921
 922         ruler_metrics[ruler_metric_bbt].units_per_pixel = frames_per_unit;
 923
 924         if (ruler_bbt_action->get_active()) {
 925                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_bbt_ruler), leftmost_frame, leftmost_frame+current_page_frames(),
 926                                             leftmost_frame, _session->current_end_frame());
 927         }
 928 }
 929
 930 /* Mark generation */
 931
 932 gint
 933 Editor::_metric_get_timecode (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 934 {
 935         return ruler_editor->metric_get_timecode (marks, lower, upper, maxchars);
 936 }
 937
 938 gint
 939 Editor::_metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 940 {
 941         return ruler_editor->metric_get_bbt (marks, lower, upper, maxchars);
 942 }
 943
 944 gint
 945 Editor::_metric_get_samples (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 946 {
 947         return ruler_editor->metric_get_samples (marks, lower, upper, maxchars);
 948 }
 949
 950 gint
 951 Editor::_metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 952 {
 953         return ruler_editor->metric_get_minsec (marks, lower, upper, maxchars);
 954 }
 955
 956 void
 957 Editor::set_timecode_ruler_scale (framepos_t lower, framepos_t upper)
 958 {
 959         framepos_t spacer;
 960         framepos_t fr;
 961
 962         if (_session == 0) {
 963                 return;
 964         }
 965
 966         fr = _session->frame_rate();
 967
 968         if (lower > (spacer = (framepos_t) (128 * Editor::get_current_zoom ()))) {
 969                 lower = lower - spacer;
 970         } else {
 971                 lower = 0;
 972         }
 973         upper = upper + spacer;
 974         framecnt_t const range = upper - lower;
 975
 976         if (range < (2 * _session->frames_per_timecode_frame())) { /* 0 - 2 frames */
 977                 timecode_ruler_scale = timecode_show_bits;
 978                 timecode_mark_modulo = 20;
 979                 timecode_nmarks = 2 + (2 * _session->config.get_subframes_per_frame());
 980         } else if (range <= (fr / 4)) { /* 2 frames - 0.250 second */
 981                 timecode_ruler_scale = timecode_show_frames;
 982                 timecode_mark_modulo = 1;
 983                 timecode_nmarks = 2 + (range / (framepos_t)_session->frames_per_timecode_frame());
 984         } else if (range <= (fr / 2)) { /* 0.25-0.5 second */
 985                 timecode_ruler_scale = timecode_show_frames;
 986                 timecode_mark_modulo = 2;
 987                 timecode_nmarks = 2 + (range / (framepos_t)_session->frames_per_timecode_frame());
 988         } else if (range <= fr) { /* 0.5-1 second */
 989                 timecode_ruler_scale = timecode_show_frames;
 990                 timecode_mark_modulo = 5;
 991                 timecode_nmarks = 2 + (range / (framepos_t)_session->frames_per_timecode_frame());
 992         } else if (range <= 2 * fr) { /* 1-2 seconds */
 993                 timecode_ruler_scale = timecode_show_frames;
 994                 timecode_mark_modulo = 10;
 995                 timecode_nmarks = 2 + (range / (framepos_t)_session->frames_per_timecode_frame());
 996         } else if (range <= 8 * fr) { /* 2-8 seconds */
 997                 timecode_ruler_scale = timecode_show_seconds;
 998                 timecode_mark_modulo = 1;
 999                 timecode_nmarks = 2 + (range / fr);
1000         } else if (range <= 16 * fr) { /* 8-16 seconds */
1001                 timecode_ruler_scale = timecode_show_seconds;
1002                 timecode_mark_modulo = 2;
1003                 timecode_nmarks = 2 + (range / fr);
1004         } else if (range <= 30 * fr) { /* 16-30 seconds */
1005                 timecode_ruler_scale = timecode_show_seconds;
1006                 timecode_mark_modulo = 5;
1007                 timecode_nmarks = 2 + (range / fr);
1008         } else if (range <= 60 * fr) { /* 30-60 seconds */
1009                 timecode_ruler_scale = timecode_show_seconds;
1010                 timecode_mark_modulo = 5;
1011                 timecode_nmarks = 2 + (range / fr);
1012         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
1013                 timecode_ruler_scale = timecode_show_seconds;
1014                 timecode_mark_modulo = 15;
1015                 timecode_nmarks = 2 + (range / fr);
1016         } else if (range <= 4 * 60 * fr) { /* 2-4 minutes */
1017                 timecode_ruler_scale = timecode_show_seconds;
1018                 timecode_mark_modulo = 30;
1019                 timecode_nmarks = 2 + (range / fr);
1020         } else if (range <= 10 * 60 * fr) { /* 4-10 minutes */
1021                 timecode_ruler_scale = timecode_show_minutes;
1022                 timecode_mark_modulo = 2;
1023                 timecode_nmarks = 2 + 10;
1024         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
1025                 timecode_ruler_scale = timecode_show_minutes;
1026                 timecode_mark_modulo = 5;
1027                 timecode_nmarks = 2 + 30;
1028         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
1029                 timecode_ruler_scale = timecode_show_minutes;
1030                 timecode_mark_modulo = 10;
1031                 timecode_nmarks = 2 + 60;
1032         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
1033                 timecode_ruler_scale = timecode_show_minutes;
1034                 timecode_mark_modulo = 30;
1035                 timecode_nmarks = 2 + (60 * 4);
1036         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
1037                 timecode_ruler_scale = timecode_show_hours;
1038                 timecode_mark_modulo = 1;
1039                 timecode_nmarks = 2 + 8;
1040         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
1041                 timecode_ruler_scale = timecode_show_hours;
1042                 timecode_mark_modulo = 1;
1043                 timecode_nmarks = 2 + 24;
1044         } else {
1045
1046                 /* not possible if framepos_t is a 32 bit quantity */
1047
1048                 timecode_ruler_scale = timecode_show_hours;
1049                 timecode_mark_modulo = 4;
1050                 timecode_nmarks = 2 + 24;
1051         }
1052
1053 }
1054
1055 gint
1056 Editor::metric_get_timecode (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upper*/, gint /*maxchars*/)
1057 {
1058         framepos_t pos;
1059         framecnt_t spacer;
1060         Timecode::Time timecode;
1061         gchar buf[16];
1062         gint n;
1063
1064         if (_session == 0) {
1065                 return 0;
1066         }
1067
1068         if (lower > (spacer = (framecnt_t)(128 * Editor::get_current_zoom ()))) {
1069                 lower = lower - spacer;
1070         } else {
1071                 lower = 0;
1072         }
1073
1074         pos = (framecnt_t) floor (lower);
1075
1076         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * timecode_nmarks);
1077         switch (timecode_ruler_scale) {
1078         case timecode_show_bits:
1079
1080                 // Find timecode time of this sample (pos) with subframe accuracy
1081                 _session->sample_to_timecode(pos, timecode, true /* use_offset */, true /* use_subframes */ );
1082
1083                 for (n = 0; n < timecode_nmarks; n++) {
1084                         _session->timecode_to_sample(timecode, pos, true /* use_offset */, true /* use_subframes */ );
1085                         if ((timecode.subframes % timecode_mark_modulo) == 0) {
1086                                 if (timecode.subframes == 0) {
1087                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1088                                         snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1089                                 } else {
1090                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1091                                         snprintf (buf, sizeof(buf), ".%02u", timecode.subframes);
1092                                 }
1093                         } else {
1094                                 snprintf (buf, sizeof(buf)," ");
1095                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1096
1097                         }
1098                         (*marks)[n].label = g_strdup (buf);
1099                         (*marks)[n].position = pos;
1100
1101                         // Increment subframes by one
1102                         Timecode::increment_subframes( timecode, _session->config.get_subframes_per_frame() );
1103                 }
1104           break;
1105         case timecode_show_seconds:
1106                 // Find timecode time of this sample (pos)
1107                 _session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1108                 // Go to next whole second down
1109                 Timecode::seconds_floor( timecode );
1110
1111                 for (n = 0; n < timecode_nmarks; n++) {
1112                         _session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1113                         if ((timecode.seconds % timecode_mark_modulo) == 0) {
1114                                 if (timecode.seconds == 0) {
1115                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1116                                         (*marks)[n].position = pos;
1117                                 } else {
1118                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1119                                         (*marks)[n].position = pos;
1120                                 }
1121                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1122                         } else {
1123                                 snprintf (buf, sizeof(buf)," ");
1124                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1125                                 (*marks)[n].position = pos;
1126
1127                         }
1128                         (*marks)[n].label = g_strdup (buf);
1129                         Timecode::increment_seconds( timecode, _session->config.get_subframes_per_frame() );
1130                 }
1131           break;
1132         case timecode_show_minutes:
1133                 // Find timecode time of this sample (pos)
1134                 _session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1135                 // Go to next whole minute down
1136                 Timecode::minutes_floor( timecode );
1137
1138                 for (n = 0; n < timecode_nmarks; n++) {
1139                         _session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1140                         if ((timecode.minutes % timecode_mark_modulo) == 0) {
1141                                 if (timecode.minutes == 0) {
1142                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1143                                 } else {
1144                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1145                                 }
1146                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1147                         } else {
1148                                 snprintf (buf, sizeof(buf)," ");
1149                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1150
1151                         }
1152                         (*marks)[n].label = g_strdup (buf);
1153                         (*marks)[n].position = pos;
1154
1155                         Timecode::increment_minutes( timecode, _session->config.get_subframes_per_frame() );
1156                 }
1157
1158           break;
1159         case timecode_show_hours:
1160                 // Find timecode time of this sample (pos)
1161                 _session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1162                 // Go to next whole hour down
1163                 Timecode::hours_floor( timecode );
1164
1165                 for (n = 0; n < timecode_nmarks; n++) {
1166                         _session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1167                         if ((timecode.hours % timecode_mark_modulo) == 0) {
1168                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1169                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1170                         } else {
1171                                 snprintf (buf, sizeof(buf)," ");
1172                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1173
1174                         }
1175                         (*marks)[n].label = g_strdup (buf);
1176                         (*marks)[n].position = pos;
1177
1178                         Timecode::increment_hours( timecode, _session->config.get_subframes_per_frame() );
1179                 }
1180           break;
1181         case timecode_show_frames:
1182                 // Find timecode time of this sample (pos)
1183                 _session->sample_to_timecode(pos, timecode, true /* use_offset */, false /* use_subframes */ );
1184                 // Go to next whole frame down
1185                 Timecode::frames_floor( timecode );
1186
1187                 for (n = 0; n < timecode_nmarks; n++) {
1188                         _session->timecode_to_sample(timecode, pos, true /* use_offset */, false /* use_subframes */ );
1189                         if ((timecode.frames % timecode_mark_modulo) == 0)  {
1190                                 if (timecode.frames == 0) {
1191                                   (*marks)[n].style = GtkCustomRulerMarkMajor;
1192                                 } else {
1193                                   (*marks)[n].style = GtkCustomRulerMarkMinor;
1194                                 }
1195                                 (*marks)[n].position = pos;
1196                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", timecode.negative ? "-" : "", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
1197                         } else {
1198                                 snprintf (buf, sizeof(buf)," ");
1199                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1200                                 (*marks)[n].position = pos;
1201
1202                         }
1203                         (*marks)[n].label = g_strdup (buf);
1204                         Timecode::increment( timecode, _session->config.get_subframes_per_frame() );
1205                 }
1206
1207           break;
1208         }
1209
1210         return timecode_nmarks;
1211 }
1212
1213
1214 void
1215 Editor::compute_bbt_ruler_scale (framepos_t lower, framepos_t upper,
1216                                  ARDOUR::TempoMap::BBTPointList::const_iterator begin,
1217                                  ARDOUR::TempoMap::BBTPointList::const_iterator end)
1218 {
1219         if (_session == 0) {
1220                 return;
1221         }
1222
1223         TempoMap::BBTPointList::const_iterator i;
1224         Timecode::BBT_Time lower_beat, upper_beat; // the beats at each end of the ruler
1225
1226         _session->bbt_time (lower, lower_beat);
1227         _session->bbt_time (upper, upper_beat);
1228         uint32_t beats = 0;
1229
1230         bbt_accent_modulo = 1;
1231         bbt_bar_helper_on = false;
1232         bbt_bars = 0;
1233         bbt_nmarks = 1;
1234
1235         bbt_ruler_scale =  bbt_over;
1236
1237         switch (_snap_type) {
1238         case SnapToBeatDiv2:
1239                 bbt_beat_subdivision = 2;
1240                 break;
1241         case SnapToBeatDiv3:
1242                 bbt_beat_subdivision = 3;
1243                 break;
1244         case SnapToBeatDiv4:
1245                 bbt_beat_subdivision = 4;
1246                 break;
1247         case SnapToBeatDiv5:
1248                 bbt_beat_subdivision = 5;
1249                 bbt_accent_modulo = 2; // XXX YIKES
1250                 break;
1251         case SnapToBeatDiv6:
1252                 bbt_beat_subdivision = 6;
1253                 bbt_accent_modulo = 2; // XXX YIKES
1254                 break;
1255         case SnapToBeatDiv7:
1256                 bbt_beat_subdivision = 7;
1257                 bbt_accent_modulo = 2; // XXX YIKES
1258                 break;
1259         case SnapToBeatDiv8:
1260                 bbt_beat_subdivision = 8;
1261                 bbt_accent_modulo = 2;
1262                 break;
1263         case SnapToBeatDiv10:
1264                 bbt_beat_subdivision = 10;
1265                 bbt_accent_modulo = 2; // XXX YIKES
1266                 break;
1267         case SnapToBeatDiv12:
1268                 bbt_beat_subdivision = 12;
1269                 bbt_accent_modulo = 3;
1270                 break;
1271         case SnapToBeatDiv14:
1272                 bbt_beat_subdivision = 14;
1273                 bbt_accent_modulo = 3; // XXX YIKES!
1274                 break;
1275         case SnapToBeatDiv16:
1276                 bbt_beat_subdivision = 16;
1277                 bbt_accent_modulo = 4;
1278                 break;
1279         case SnapToBeatDiv20:
1280                 bbt_beat_subdivision = 20;
1281                 bbt_accent_modulo = 5;
1282                 break;
1283         case SnapToBeatDiv24:
1284                 bbt_beat_subdivision = 24;
1285                 bbt_accent_modulo = 6;
1286                 break;
1287         case SnapToBeatDiv28:
1288                 bbt_beat_subdivision = 28;
1289                 bbt_accent_modulo = 7;
1290                 break;
1291         case SnapToBeatDiv32:
1292                 bbt_beat_subdivision = 32;
1293                 bbt_accent_modulo = 8;
1294                 break;
1295         case SnapToBeatDiv64:
1296                 bbt_beat_subdivision = 64;
1297                 bbt_accent_modulo = 8;
1298                 break;
1299         case SnapToBeatDiv128:
1300                 bbt_beat_subdivision = 128;
1301                 bbt_accent_modulo = 8;
1302                 break;
1303         default:
1304                 bbt_beat_subdivision = 4;
1305                 break;
1306         }
1307
1308         if (distance (begin, end) == 0) {
1309                 return;
1310         }
1311
1312         i = end;
1313         i--;
1314         if ((*i).beat >= (*begin).beat) {
1315                 bbt_bars = (*i).bar - (*begin).bar;
1316         } else {
1317                 bbt_bars = (*i).bar - (*begin).bar - 1;
1318         }
1319         beats = distance (begin, end) - bbt_bars;
1320
1321         /* Only show the bar helper if there aren't many bars on the screen */
1322         if ((bbt_bars < 2) || (beats < 5)) {
1323                 bbt_bar_helper_on = true;
1324         }
1325
1326         if (bbt_bars > 8192) {
1327                 bbt_ruler_scale =  bbt_over;
1328         } else if (bbt_bars > 1024) {
1329                 bbt_ruler_scale = bbt_show_64;
1330         } else if (bbt_bars > 256) {
1331                 bbt_ruler_scale = bbt_show_16;
1332         } else if (bbt_bars > 64) {
1333                 bbt_ruler_scale = bbt_show_4;
1334         } else if (bbt_bars > 10) {
1335                 bbt_ruler_scale =  bbt_show_1;
1336         } else if (bbt_bars > 2) {
1337                 bbt_ruler_scale =  bbt_show_beats;
1338         } else  if (bbt_bars > 0) {
1339                 bbt_ruler_scale =  bbt_show_ticks;
1340         } else {
1341                 bbt_ruler_scale =  bbt_show_ticks_detail;
1342         }
1343
1344         if ((bbt_ruler_scale == bbt_show_ticks_detail) && (lower_beat.beats == upper_beat.beats) && (upper_beat.ticks - lower_beat.ticks <= Timecode::BBT_Time::ticks_per_beat / 4)) {
1345                 bbt_ruler_scale =  bbt_show_ticks_super_detail;
1346         }
1347 }
1348
1349 gint
1350 Editor::metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint /*maxchars*/)
1351 {
1352         if (_session == 0) {
1353                 return 0;
1354         }
1355
1356         TempoMap::BBTPointList::const_iterator i;
1357
1358         char buf[64];
1359         gint  n = 0;
1360         framepos_t pos;
1361         Timecode::BBT_Time next_beat;
1362         framepos_t next_beat_pos;
1363         uint32_t beats = 0;
1364
1365         uint32_t tick = 0;
1366         uint32_t skip;
1367         uint32_t t;
1368         framepos_t frame_skip;
1369         double frame_skip_error;
1370         double bbt_position_of_helper;
1371         double accumulated_error;
1372         bool i_am_accented = false;
1373         bool helper_active = false;
1374
1375         ARDOUR::TempoMap::BBTPointList::const_iterator begin;
1376         ARDOUR::TempoMap::BBTPointList::const_iterator end;
1377
1378         compute_current_bbt_points (lower, upper, begin, end);
1379
1380         if (distance (begin, end) == 0) {
1381                 return 0;
1382         }
1383
1384         switch (bbt_ruler_scale) {
1385
1386         case bbt_show_beats:
1387                 beats = distance (begin, end);
1388                 bbt_nmarks = beats + 2;
1389
1390                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1391
1392                 (*marks)[0].label = g_strdup(" ");
1393                 (*marks)[0].position = lower;
1394                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1395
1396                 for (n = 1, i = begin; n < bbt_nmarks && i != end; ++i) {
1397
1398                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1399                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1400                                 (*marks)[0].label = g_strdup (buf);
1401                                 helper_active = true;
1402                         } else {
1403
1404                                 if ((*i).is_bar()) {
1405                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1406                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1407                                 } else if (((*i).beat % 2 == 1)) {
1408                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1409                                         snprintf (buf, sizeof(buf), " ");
1410                                 } else {
1411                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1412                                         snprintf (buf, sizeof(buf), " ");
1413                                 }
1414                                 (*marks)[n].label =  g_strdup (buf);
1415                                 (*marks)[n].position = (*i).frame;
1416                                 n++;
1417                         }
1418                 }
1419                 break;
1420
1421         case bbt_show_ticks:
1422
1423                 beats = distance (begin, end);
1424                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1425
1426                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1427                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1428
1429                 (*marks)[0].label = g_strdup(" ");
1430                 (*marks)[0].position = lower;
1431                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1432
1433                 for (n = 1, i = begin; n < bbt_nmarks && i != end; ++i) {
1434
1435                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1436                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1437                                 (*marks)[0].label = g_strdup (buf);
1438                                 helper_active = true;
1439                         } else {
1440
1441                                 if ((*i).is_bar()) {
1442                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1443                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1444                                 } else {
1445                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1446                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1447                                 }
1448                                 if (((*i).frame < bbt_position_of_helper) && helper_active) {
1449                                         snprintf (buf, sizeof(buf), " ");
1450                                 }
1451                                 (*marks)[n].label =  g_strdup (buf);
1452                                 (*marks)[n].position = (*i).frame;
1453                                 n++;
1454                         }
1455
1456                         /* Add the tick marks */
1457
1458                         /* Find the next beat */
1459                         next_beat.beats = (*i).beat;
1460                         next_beat.bars = (*i).bar;
1461                         next_beat.ticks = 0;
1462
1463                         if ((*i).meter->divisions_per_bar() > (next_beat.beats + 1)) {
1464                                   next_beat.beats += 1;
1465                         } else {
1466                                   next_beat.bars += 1;
1467                                   next_beat.beats = 1;
1468                         }
1469
1470                         next_beat_pos = _session->tempo_map().frame_time(next_beat);
1471
1472                         frame_skip = (framepos_t) floor (frame_skip_error = (_session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1473                         frame_skip_error -= frame_skip;
1474                         skip = (uint32_t) (Timecode::BBT_Time::ticks_per_beat / bbt_beat_subdivision);
1475
1476                         pos = (*i).frame + frame_skip;
1477                         accumulated_error = frame_skip_error;
1478
1479                         tick = skip;
1480
1481                         for (t = 0; (tick < Timecode::BBT_Time::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1482
1483                                 if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1484                                         i_am_accented = true;
1485                                 }
1486
1487                                 snprintf (buf, sizeof(buf), " ");
1488                                 (*marks)[n].label = g_strdup (buf);
1489
1490                                 /* Error compensation for float to framepos_t*/
1491                                 accumulated_error += frame_skip_error;
1492                                 if (accumulated_error > 1) {
1493                                         pos += 1;
1494                                         accumulated_error -= 1.0f;
1495                                 }
1496
1497                                 (*marks)[n].position = pos;
1498
1499                                 if ((bbt_beat_subdivision > 4) && i_am_accented) {
1500                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1501                                 } else {
1502                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1503                                 }
1504                                 i_am_accented = false;
1505                                 n++;
1506                         }
1507                 }
1508
1509           break;
1510
1511         case bbt_show_ticks_detail:
1512
1513                 beats = distance (begin, end);
1514                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1515
1516                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1517                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1518
1519                 (*marks)[0].label = g_strdup(" ");
1520                 (*marks)[0].position = lower;
1521                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1522
1523                 for (n = 1,   i = begin; n < bbt_nmarks && i != end; ++i) {
1524
1525                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1526                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1527                                 (*marks)[0].label = g_strdup (buf);
1528                                 helper_active = true;
1529                         } else {
1530
1531                                 if ((*i).is_bar()) {
1532                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1533                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1534                                 } else {
1535                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1536                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1537                                 }
1538                                 if (((*i).frame < bbt_position_of_helper) && helper_active) {
1539                                         snprintf (buf, sizeof(buf), " ");
1540                                 }
1541                                 (*marks)[n].label =  g_strdup (buf);
1542                                 (*marks)[n].position = (*i).frame;
1543                                 n++;
1544                         }
1545
1546                         /* Add the tick marks */
1547
1548                         /* Find the next beat */
1549
1550                         next_beat.beats = (*i).beat;
1551                         next_beat.bars = (*i).bar;
1552
1553                         if ((*i).meter->divisions_per_bar() > (next_beat.beats + 1)) {
1554                                   next_beat.beats += 1;
1555                         } else {
1556                                   next_beat.bars += 1;
1557                                   next_beat.beats = 1;
1558                         }
1559
1560                         next_beat_pos = _session->tempo_map().frame_time(next_beat);
1561
1562                         frame_skip = (framepos_t) floor (frame_skip_error = (_session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1563                         frame_skip_error -= frame_skip;
1564                         skip = (uint32_t) (Timecode::BBT_Time::ticks_per_beat / bbt_beat_subdivision);
1565
1566                         pos = (*i).frame + frame_skip;
1567                         accumulated_error = frame_skip_error;
1568
1569                         tick = skip;
1570
1571                         for (t = 0; (tick < Timecode::BBT_Time::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1572
1573                                 if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1574                                         i_am_accented = true;
1575                                 }
1576
1577                                 if (i_am_accented && (pos > bbt_position_of_helper)){
1578                                         snprintf (buf, sizeof(buf), "%" PRIu32, tick);
1579                                 } else {
1580                                         snprintf (buf, sizeof(buf), " ");
1581                                 }
1582
1583                                 (*marks)[n].label = g_strdup (buf);
1584
1585                                 /* Error compensation for float to framepos_t*/
1586                                 accumulated_error += frame_skip_error;
1587                                 if (accumulated_error > 1) {
1588                                         pos += 1;
1589                                         accumulated_error -= 1.0f;
1590                                 }
1591
1592                                 (*marks)[n].position = pos;
1593
1594                                 if ((bbt_beat_subdivision > 4) && i_am_accented) {
1595                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1596                                 } else {
1597                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1598                                 }
1599                                 i_am_accented = false;
1600                                 n++;
1601                         }
1602                 }
1603
1604           break;
1605
1606         case bbt_show_ticks_super_detail:
1607
1608                 beats = distance (begin, end);
1609                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1610
1611                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1612                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1613
1614                 (*marks)[0].label = g_strdup(" ");
1615                 (*marks)[0].position = lower;
1616                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1617
1618                 for (n = 1,   i = begin; n < bbt_nmarks && i != end; ++i) {
1619
1620                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1621                                   snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1622                                   (*marks)[0].label = g_strdup (buf);
1623                                   helper_active = true;
1624                         } else {
1625
1626                                   if ((*i).is_bar()) {
1627                                           (*marks)[n].style = GtkCustomRulerMarkMajor;
1628                                           snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1629                                   } else {
1630                                           (*marks)[n].style = GtkCustomRulerMarkMinor;
1631                                           snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1632                                   }
1633                                   if (((*i).frame < bbt_position_of_helper) && helper_active) {
1634                                           snprintf (buf, sizeof(buf), " ");
1635                                   }
1636                                   (*marks)[n].label =  g_strdup (buf);
1637                                   (*marks)[n].position = (*i).frame;
1638                                   n++;
1639                         }
1640
1641                         /* Add the tick marks */
1642
1643                         /* Find the next beat */
1644
1645                         next_beat.beats = (*i).beat;
1646                         next_beat.bars = (*i).bar;
1647
1648                         if ((*i).meter->divisions_per_bar() > (next_beat.beats + 1)) {
1649                                   next_beat.beats += 1;
1650                         } else {
1651                                   next_beat.bars += 1;
1652                                   next_beat.beats = 1;
1653                         }
1654
1655                         next_beat_pos = _session->tempo_map().frame_time(next_beat);
1656
1657                         frame_skip = (framepos_t) floor (frame_skip_error = (_session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1658                         frame_skip_error -= frame_skip;
1659                         skip = (uint32_t) (Timecode::BBT_Time::ticks_per_beat / bbt_beat_subdivision);
1660
1661                         pos = (*i).frame + frame_skip;
1662                         accumulated_error = frame_skip_error;
1663
1664                         tick = skip;
1665
1666                         for (t = 0; (tick < Timecode::BBT_Time::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1667
1668                                   if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1669                                           i_am_accented = true;
1670                                   }
1671
1672                                   if (pos > bbt_position_of_helper) {
1673                                           snprintf (buf, sizeof(buf), "%" PRIu32, tick);
1674                                   } else {
1675                                           snprintf (buf, sizeof(buf), " ");
1676                                   }
1677
1678                                   (*marks)[n].label = g_strdup (buf);
1679
1680                                   /* Error compensation for float to framepos_t*/
1681                                   accumulated_error += frame_skip_error;
1682                                   if (accumulated_error > 1) {
1683                                           pos += 1;
1684                                           accumulated_error -= 1.0f;
1685                                   }
1686
1687                                   (*marks)[n].position = pos;
1688
1689                                   if ((bbt_beat_subdivision > 4) && i_am_accented) {
1690                                           (*marks)[n].style = GtkCustomRulerMarkMinor;
1691                                   } else {
1692                                           (*marks)[n].style = GtkCustomRulerMarkMicro;
1693                                   }
1694                                   i_am_accented = false;
1695                                   n++;
1696                         }
1697                 }
1698
1699           break;
1700
1701         case bbt_over:
1702                         bbt_nmarks = 1;
1703                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1704                         snprintf (buf, sizeof(buf), "cannot handle %" PRIu32 " bars", bbt_bars );
1705                         (*marks)[0].style = GtkCustomRulerMarkMajor;
1706                         (*marks)[0].label = g_strdup (buf);
1707                         (*marks)[0].position = lower;
1708                         n = 1;
1709
1710           break;
1711
1712         case bbt_show_64:
1713                         bbt_nmarks = (gint) (bbt_bars / 64) + 1;
1714                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1715                         for (n = 0,   i = begin; i != end && n < bbt_nmarks; i++) {
1716                                 if ((*i).is_bar()) {
1717                                         if ((*i).bar % 64 == 1) {
1718                                                 if ((*i).bar % 256 == 1) {
1719                                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1720                                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1721                                                 } else {
1722                                                         snprintf (buf, sizeof(buf), " ");
1723                                                         if ((*i).bar % 256 == 129)  {
1724                                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1725                                                         } else {
1726                                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1727                                                         }
1728                                                 }
1729                                                 (*marks)[n].label = g_strdup (buf);
1730                                                 (*marks)[n].position = (*i).frame;
1731                                                 n++;
1732                                         }
1733                                 }
1734                         }
1735                         break;
1736
1737         case bbt_show_16:
1738                 bbt_nmarks = (bbt_bars / 16) + 1;
1739                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1740                 for (n = 0,  i = begin; i != end && n < bbt_nmarks; i++) {
1741                         if ((*i).is_bar()) {
1742                           if ((*i).bar % 16 == 1) {
1743                                 if ((*i).bar % 64 == 1) {
1744                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1745                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1746                                 } else {
1747                                         snprintf (buf, sizeof(buf), " ");
1748                                         if ((*i).bar % 64 == 33)  {
1749                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1750                                         } else {
1751                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1752                                         }
1753                                 }
1754                                 (*marks)[n].label = g_strdup (buf);
1755                                 (*marks)[n].position = (*i).frame;
1756                                 n++;
1757                           }
1758                         }
1759                 }
1760           break;
1761
1762         case bbt_show_4:
1763                 bbt_nmarks = (bbt_bars / 4) + 1;
1764                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1765                 for (n = 0,   i = begin; i != end && n < bbt_nmarks; ++i) {
1766                         if ((*i).is_bar()) {
1767                           if ((*i).bar % 4 == 1) {
1768                                 if ((*i).bar % 16 == 1) {
1769                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1770                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1771                                 } else {
1772                                         snprintf (buf, sizeof(buf), " ");
1773                                         if ((*i).bar % 16 == 9)  {
1774                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1775                                         } else {
1776                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1777                                         }
1778                                 }
1779                                 (*marks)[n].label = g_strdup (buf);
1780                                 (*marks)[n].position = (*i).frame;
1781                                 n++;
1782                           }
1783                         }
1784                 }
1785           break;
1786
1787         case bbt_show_1:
1788   //    default:
1789                 bbt_nmarks = bbt_bars + 2;
1790                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks );
1791                 for (n = 0,  i = begin; i != end && n < bbt_nmarks; i++) {
1792                         if ((*i).is_bar()) {
1793                           if ((*i).bar % 4 == 1) {
1794                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1795                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1796                           } else {
1797                                 snprintf (buf, sizeof(buf), " ");
1798                                 if ((*i).bar % 4 == 3)  {
1799                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1800                                 } else {
1801                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1802                                 }
1803                           }
1804                         (*marks)[n].label = g_strdup (buf);
1805                         (*marks)[n].position = (*i).frame;
1806                         n++;
1807                         }
1808                 }
1809
1810         break;
1811
1812         }
1813
1814         return n; //return the actual number of marks made, since we might have skipped some from fractional time signatures
1815
1816 }
1817
1818 void
1819 Editor::set_samples_ruler_scale (framepos_t lower, framepos_t upper)
1820 {
1821         _samples_ruler_interval = (upper - lower) / 5;
1822 }
1823
1824 gint
1825 Editor::metric_get_samples (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upper*/, gint /*maxchars*/)
1826 {
1827         framepos_t pos;
1828         framepos_t const ilower = (framepos_t) floor (lower);
1829         gchar buf[16];
1830         gint nmarks;
1831         gint n;
1832
1833         if (_session == 0) {
1834                 return 0;
1835         }
1836
1837         nmarks = 5;
1838         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1839         for (n = 0, pos = ilower; n < nmarks; pos += _samples_ruler_interval, ++n) {
1840                 snprintf (buf, sizeof(buf), "%" PRIi64, pos);
1841                 (*marks)[n].label = g_strdup (buf);
1842                 (*marks)[n].position = pos;
1843                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1844         }
1845
1846         return nmarks;
1847 }
1848
1849 static void
1850 sample_to_clock_parts ( framepos_t sample,
1851                         framepos_t sample_rate,
1852                         long *hrs_p,
1853                         long *mins_p,
1854                         long *secs_p,
1855                         long *millisecs_p)
1856
1857 {
1858         framepos_t left;
1859         long hrs;
1860         long mins;
1861         long secs;
1862         long millisecs;
1863
1864         left = sample;
1865         hrs = left / (sample_rate * 60 * 60);
1866         left -= hrs * sample_rate * 60 * 60;
1867         mins = left / (sample_rate * 60);
1868         left -= mins * sample_rate * 60;
1869         secs = left / sample_rate;
1870         left -= secs * sample_rate;
1871         millisecs = left * 1000 / sample_rate;
1872
1873         *millisecs_p = millisecs;
1874         *secs_p = secs;
1875         *mins_p = mins;
1876         *hrs_p = hrs;
1877
1878         return;
1879 }
1880
1881 void
1882 Editor::set_minsec_ruler_scale (framepos_t lower, framepos_t upper)
1883 {
1884         framepos_t fr;
1885         framepos_t spacer;
1886
1887         if (_session == 0) {
1888                 return;
1889         }
1890
1891         fr = _session->frame_rate();
1892
1893         /* to prevent 'flashing' */
1894         if (lower > (spacer = (framepos_t)(128 * Editor::get_current_zoom ()))) {
1895                 lower -= spacer;
1896         } else {
1897                 lower = 0;
1898         }
1899         upper += spacer;
1900         framecnt_t const range = upper - lower;
1901
1902         if (range <  (fr / 50)) {
1903                 minsec_mark_interval =  fr / 1000; /* show 1/1000 seconds */
1904                 minsec_ruler_scale = minsec_show_frames;
1905                 minsec_mark_modulo = 10;
1906         } else if (range <= (fr / 10)) { /* 0-0.1 second */
1907                 minsec_mark_interval = fr / 1000; /* show 1/1000 seconds */
1908                 minsec_ruler_scale = minsec_show_frames;
1909                 minsec_mark_modulo = 10;
1910         } else if (range <= (fr / 2)) { /* 0-0.5 second */
1911                 minsec_mark_interval = fr / 100;  /* show 1/100 seconds */
1912                 minsec_ruler_scale = minsec_show_frames;
1913                 minsec_mark_modulo = 100;
1914         } else if (range <= fr) { /* 0-1 second */
1915                 minsec_mark_interval = fr / 10;  /* show 1/10 seconds */
1916                 minsec_ruler_scale = minsec_show_frames;
1917                 minsec_mark_modulo = 200;
1918         } else if (range <= 2 * fr) { /* 1-2 seconds */
1919                 minsec_mark_interval = fr / 10; /* show 1/10 seconds */
1920                 minsec_ruler_scale = minsec_show_frames;
1921                 minsec_mark_modulo = 500;
1922         } else if (range <= 8 * fr) { /* 2-5 seconds */
1923                 minsec_mark_interval =  fr / 5; /* show 2 seconds */
1924                 minsec_ruler_scale = minsec_show_frames;
1925                 minsec_mark_modulo = 1000;
1926         } else if (range <= 16 * fr) { /* 8-16 seconds */
1927                 minsec_mark_interval =  fr; /* show 1 seconds */
1928                 minsec_ruler_scale = minsec_show_seconds;
1929                 minsec_mark_modulo = 2;
1930         } else if (range <= 30 * fr) { /* 10-30 seconds */
1931                 minsec_mark_interval =  fr; /* show 1 seconds */
1932                 minsec_ruler_scale = minsec_show_seconds;
1933                 minsec_mark_modulo = 5;
1934         } else if (range <= 60 * fr) { /* 30-60 seconds */
1935                 minsec_mark_interval = fr; /* show 1 seconds */
1936                 minsec_ruler_scale = minsec_show_seconds;
1937                 minsec_mark_modulo = 5;
1938         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
1939                 minsec_mark_interval = 5 * fr; /* show 5 seconds */
1940                 minsec_ruler_scale = minsec_show_seconds;
1941                 minsec_mark_modulo = 3;
1942         } else if (range <= 4 * 60 * fr) { /* 4 minutes */
1943                 minsec_mark_interval = 5 * fr; /* show 10 seconds */
1944                 minsec_ruler_scale = minsec_show_seconds;
1945                 minsec_mark_modulo = 30;
1946         } else if (range <= 10 * 60 * fr) { /* 10 minutes */
1947                 minsec_mark_interval = 30 * fr; /* show 30 seconds */
1948                 minsec_ruler_scale = minsec_show_seconds;
1949                 minsec_mark_modulo = 120;
1950         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
1951                 minsec_mark_interval =  60 * fr; /* show 1 minute */
1952                 minsec_ruler_scale = minsec_show_minutes;
1953                 minsec_mark_modulo = 5;
1954         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
1955                 minsec_mark_interval = 2 * 60 * fr; /* show 2 minutes */
1956                 minsec_ruler_scale = minsec_show_minutes;
1957                 minsec_mark_modulo = 10;
1958         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
1959                 minsec_mark_interval = 5 * 60 * fr; /* show 10 minutes */
1960                 minsec_ruler_scale = minsec_show_minutes;
1961                 minsec_mark_modulo = 30;
1962         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
1963                 minsec_mark_interval = 20 * 60 * fr; /* show 20 minutes */
1964                 minsec_ruler_scale = minsec_show_minutes;
1965                 minsec_mark_modulo = 60;
1966         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
1967                 minsec_mark_interval =  60 * 60 * fr; /* show 60 minutes */
1968                 minsec_ruler_scale = minsec_show_hours;
1969                 minsec_mark_modulo = 2;
1970         } else {
1971
1972                 /* not possible if framepos_t is a 32 bit quantity */
1973
1974                 minsec_mark_interval = 4 * 60 * 60 * fr; /* show 4 hrs */
1975         }
1976         minsec_nmarks = 2 + (range / minsec_mark_interval);
1977 }
1978
1979 gint
1980 Editor::metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upper*/, gint /*maxchars*/)
1981 {
1982         framepos_t pos;
1983         framepos_t spacer;
1984         long hrs, mins, secs, millisecs;
1985         gchar buf[16];
1986         gint n;
1987
1988         if (_session == 0) {
1989                 return 0;
1990         }
1991
1992         /* to prevent 'flashing' */
1993         if (lower > (spacer = (framepos_t) (128 * Editor::get_current_zoom ()))) {
1994                 lower = lower - spacer;
1995         } else {
1996                 lower = 0;
1997         }
1998
1999         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * minsec_nmarks);
2000         pos = ((((framepos_t) floor(lower)) + (minsec_mark_interval/2))/minsec_mark_interval) * minsec_mark_interval;
2001         switch (minsec_ruler_scale) {
2002         case minsec_show_seconds:
2003                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
2004                         sample_to_clock_parts (pos, _session->frame_rate(), &hrs, &mins, &secs, &millisecs);
2005                         if (secs % minsec_mark_modulo == 0) {
2006                                 if (secs == 0) {
2007                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
2008                                 } else {
2009                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
2010                                 }
2011                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
2012                         } else {
2013                                 snprintf (buf, sizeof(buf), " ");
2014                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
2015                         }
2016                         (*marks)[n].label = g_strdup (buf);
2017                         (*marks)[n].position = pos;
2018                 }
2019           break;
2020         case minsec_show_minutes:
2021                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
2022                         sample_to_clock_parts (pos, _session->frame_rate(), &hrs, &mins, &secs, &millisecs);
2023                         if (mins % minsec_mark_modulo == 0) {
2024                                 if (mins == 0) {
2025                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
2026                                 } else {
2027                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
2028                                 }
2029                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
2030                         } else {
2031                                 snprintf (buf, sizeof(buf), " ");
2032                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
2033                         }
2034                         (*marks)[n].label = g_strdup (buf);
2035                         (*marks)[n].position = pos;
2036                 }
2037           break;
2038         case minsec_show_hours:
2039                  for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
2040                         sample_to_clock_parts (pos, _session->frame_rate(), &hrs, &mins, &secs, &millisecs);
2041                         if (hrs % minsec_mark_modulo == 0) {
2042                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
2043                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
2044                         } else {
2045                                 snprintf (buf, sizeof(buf), " ");
2046                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
2047                         }
2048                         (*marks)[n].label = g_strdup (buf);
2049                         (*marks)[n].position = pos;
2050                 }
2051               break;
2052         case minsec_show_frames:
2053                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
2054                         sample_to_clock_parts (pos, _session->frame_rate(), &hrs, &mins, &secs, &millisecs);
2055                         if (millisecs % minsec_mark_modulo == 0) {
2056                                 if (secs == 0) {
2057                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
2058                                 } else {
2059                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
2060                                 }
2061                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
2062                         } else {
2063                                 snprintf (buf, sizeof(buf), " ");
2064                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
2065                         }
2066                         (*marks)[n].label = g_strdup (buf);
2067                         (*marks)[n].position = pos;
2068                 }
2069           break;
2070         }
2071
2072         return minsec_nmarks;
2073 }