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 #include <cstdio> // for sprintf, grrr
  21 #include <cmath>
  22
  23 #include <string>
  24
  25 #include <gtk/gtkaction.h>
  26
  27 #include <ardour/tempo.h>
  28 #include <ardour/profile.h>
  29 #include <gtkmm2ext/gtk_ui.h>
  30
  31 #include "editor.h"
  32 #include "editing.h"
  33 #include "actions.h"
  34 #include "gtk-custom-hruler.h"
  35 #include "gui_thread.h"
  36
  37 #include "i18n.h"
  38
  39 using namespace sigc;
  40 using namespace ARDOUR;
  41 using namespace PBD;
  42 using namespace Gtk;
  43 using namespace Editing;
  44
  45 Editor *Editor::ruler_editor;
  46
  47 /* the order here must match the "metric" enums in editor.h */
  48
  49 GtkCustomMetric Editor::ruler_metrics[4] = {
  50         {1, Editor::_metric_get_smpte },
  51         {1, Editor::_metric_get_bbt },
  52         {1, Editor::_metric_get_frames },
  53         {1, Editor::_metric_get_minsec }
  54 };
  55
  56 void
  57 Editor::initialize_rulers ()
  58 {
  59         ruler_editor = this;
  60         ruler_grabbed_widget = 0;
  61
  62         _ruler_separator = new Gtk::HSeparator();
  63         _ruler_separator->set_size_request(-1, 2);
  64         _ruler_separator->set_name("TimebarPadding");
  65         _ruler_separator->show();
  66
  67         _smpte_ruler = gtk_custom_hruler_new ();
  68         smpte_ruler = Glib::wrap (_smpte_ruler);
  69         smpte_ruler->set_name ("SMPTERuler");
  70         smpte_ruler->set_size_request (-1, (int)timebar_height);
  71         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_smpte_ruler), &ruler_metrics[ruler_metric_smpte]);
  72
  73         _bbt_ruler = gtk_custom_hruler_new ();
  74         bbt_ruler = Glib::wrap (_bbt_ruler);
  75         bbt_ruler->set_name ("BBTRuler");
  76         bbt_ruler->set_size_request (-1, (int)timebar_height);
  77         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_bbt_ruler), &ruler_metrics[ruler_metric_bbt]);
  78
  79         _frames_ruler = gtk_custom_hruler_new ();
  80         frames_ruler = Glib::wrap (_frames_ruler);
  81         frames_ruler->set_name ("FramesRuler");
  82         frames_ruler->set_size_request (-1, (int)timebar_height);
  83         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_frames_ruler), &ruler_metrics[ruler_metric_frames]);
  84
  85         _minsec_ruler = gtk_custom_hruler_new ();
  86         minsec_ruler = Glib::wrap (_minsec_ruler);
  87         minsec_ruler->set_name ("MinSecRuler");
  88         minsec_ruler->set_size_request (-1, (int)timebar_height);
  89         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_minsec_ruler), &ruler_metrics[ruler_metric_minsec]);
  90
  91         visible_timebars = 7; /* 4 here, 3 in time_canvas */
  92         ruler_pressed_button = 0;
  93 }
  94
  95 bool
  96 Editor::ruler_scroll (GdkEventScroll* event)
  97 {
  98         nframes_t xdelta;
  99         int direction = event->direction;
 100         bool handled = false;
 101
 102         switch (direction) {
 103         case GDK_SCROLL_UP:
 104                 temporal_zoom_step (true);
 105                 handled = true;
 106                 break;
 107
 108         case GDK_SCROLL_DOWN:
 109                 temporal_zoom_step (false);
 110                 handled = true;
 111                 break;
 112
 113         case GDK_SCROLL_LEFT:
 114                 xdelta = (current_page_frames() / 2);
 115                 if (leftmost_frame > xdelta) {
 116                         reset_x_origin (leftmost_frame - xdelta);
 117                 } else {
 118                         reset_x_origin (0);
 119                 }
 120                 handled = true;
 121                 break;
 122
 123         case GDK_SCROLL_RIGHT:
 124                 xdelta = (current_page_frames() / 2);
 125                 if (max_frames - xdelta > leftmost_frame) {
 126                         reset_x_origin (leftmost_frame + xdelta);
 127                 } else {
 128                         reset_x_origin (max_frames - current_page_frames());
 129                 }
 130                 handled = true;
 131                 break;
 132
 133         default:
 134                 /* what? */
 135                 break;
 136         }
 137
 138         return handled;
 139 }
 140
 141
 142 gint
 143 Editor::ruler_button_press (GdkEventButton* ev)
 144 {
 145         if (session == 0) {
 146                 return FALSE;
 147         }
 148
 149         ruler_pressed_button = ev->button;
 150
 151         // jlc: grab ev->window ?
 152         //Gtk::Main::grab_add (*minsec_ruler);
 153         Widget * grab_widget = 0;
 154
 155         if (smpte_ruler->is_realized() && ev->window == smpte_ruler->get_window()->gobj()) grab_widget = smpte_ruler;
 156         else if (bbt_ruler->is_realized() && ev->window == bbt_ruler->get_window()->gobj()) grab_widget = bbt_ruler;
 157         else if (frames_ruler->is_realized() && ev->window == frames_ruler->get_window()->gobj()) grab_widget = frames_ruler;
 158         else if (minsec_ruler->is_realized() && ev->window == minsec_ruler->get_window()->gobj()) grab_widget = minsec_ruler;
 159
 160         if (grab_widget) {
 161                 grab_widget->add_modal_grab ();
 162                 ruler_grabbed_widget = grab_widget;
 163         }
 164
 165         gint x,y;
 166         Gdk::ModifierType state;
 167
 168         /* need to use the correct x,y, the event lies */
 169         time_canvas_event_box.get_window()->get_pointer (x, y, state);
 170
 171         nframes_t where = leftmost_frame + pixel_to_frame (x);
 172
 173         switch (ev->button) {
 174         case 1:
 175                 // Since we will locate the playhead on button release, cancel any running
 176                 // auditions.
 177                 if (session->is_auditioning()) {
 178                         session->cancel_audition ();
 179                 }
 180                 /* playhead cursor */
 181                 snap_to (where);
 182                 playhead_cursor->set_position (where);
 183                 _dragging_playhead = true;
 184                 break;
 185
 186         case 2:
 187                 /* edit point */
 188                 snap_to (where);
 189                 break;
 190
 191         default:
 192                 break;
 193         }
 194
 195         return TRUE;
 196 }
 197
 198 gint
 199 Editor::ruler_button_release (GdkEventButton* ev)
 200 {
 201         gint x,y;
 202         Gdk::ModifierType state;
 203
 204         /* need to use the correct x,y, the event lies */
 205         time_canvas_event_box.get_window()->get_pointer (x, y, state);
 206
 207         ruler_pressed_button = 0;
 208
 209         if (session == 0) {
 210                 return FALSE;
 211         }
 212
 213         stop_canvas_autoscroll();
 214
 215         nframes_t where = leftmost_frame + pixel_to_frame (x);
 216
 217         switch (ev->button) {
 218         case 1:
 219                 /* transport playhead */
 220                 _dragging_playhead = false;
 221                 snap_to (where);
 222                 session->request_locate (where);
 223                 break;
 224
 225         case 2:
 226                 /* edit point */
 227                 snap_to (where);
 228                 break;
 229
 230         case 3:
 231                 /* popup menu */
 232                 snap_to (where);
 233                 popup_ruler_menu (where);
 234
 235                 break;
 236         default:
 237                 break;
 238         }
 239
 240
 241         if (ruler_grabbed_widget) {
 242                 ruler_grabbed_widget->remove_modal_grab();
 243                 ruler_grabbed_widget = 0;
 244         }
 245
 246         return TRUE;
 247 }
 248
 249 gint
 250 Editor::ruler_label_button_release (GdkEventButton* ev)
 251 {
 252         if (ev->button == 3) {
 253                 Gtk::Menu* m= dynamic_cast<Gtk::Menu*> (ActionManager::get_widget (X_("/RulerMenuPopup")));
 254                 if (m) {
 255                         m->popup (1, ev->time);
 256                 }
 257         }
 258
 259         return TRUE;
 260 }
 261
 262
 263 gint
 264 Editor::ruler_mouse_motion (GdkEventMotion* ev)
 265 {
 266         if (session == 0 || !ruler_pressed_button) {
 267                 return FALSE;
 268         }
 269
 270         double wcx=0,wcy=0;
 271         double cx=0,cy=0;
 272
 273         gint x,y;
 274         Gdk::ModifierType state;
 275
 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
 280         track_canvas->c2w (x, y, wcx, wcy);
 281         track_canvas->w2c (wcx, wcy, cx, cy);
 282
 283         nframes_t where = leftmost_frame + pixel_to_frame (x);
 284
 285         /// ripped from maybe_autoscroll, and adapted to work here
 286         nframes_t rightmost_frame = leftmost_frame + current_page_frames ();
 287
 288         jack_nframes_t frame = pixel_to_frame (cx);
 289
 290         if (autoscroll_timeout_tag < 0) {
 291                 if (frame > rightmost_frame) {
 292                         if (rightmost_frame < max_frames) {
 293                                 start_canvas_autoscroll (1);
 294                         }
 295                 } else if (frame < leftmost_frame) {
 296                         if (leftmost_frame > 0) {
 297                                 start_canvas_autoscroll (-1);
 298                         }
 299                 }
 300         } else {
 301                 if (frame >= leftmost_frame && frame < rightmost_frame) {
 302                         stop_canvas_autoscroll ();
 303                 }
 304         }
 305         //////
 306
 307         snap_to (where);
 308
 309         Cursor* cursor = 0;
 310
 311         switch (ruler_pressed_button) {
 312         case 1:
 313                 /* transport playhead */
 314                 cursor = playhead_cursor;
 315                 break;
 316
 317         case 2:
 318                 /* edit point */
 319                 // EDIT CURSOR XXX do something useful
 320                 break;
 321
 322         default:
 323                 break;
 324         }
 325
 326         if (cursor) {
 327                 cursor->set_position (where);
 328
 329                 if (cursor == playhead_cursor) {
 330                         UpdateAllTransportClocks (cursor->current_frame);
 331                 }
 332         }
 333
 334         return TRUE;
 335 }
 336
 337
 338 void
 339 Editor::popup_ruler_menu (nframes_t where, ItemType t)
 340 {
 341         using namespace Menu_Helpers;
 342
 343         if (editor_ruler_menu == 0) {
 344                 editor_ruler_menu = new Menu;
 345                 editor_ruler_menu->set_name ("ArdourContextMenu");
 346         }
 347
 348         // always build from scratch
 349         MenuList& ruler_items = editor_ruler_menu->items();
 350         editor_ruler_menu->set_name ("ArdourContextMenu");
 351         ruler_items.clear();
 352
 353         switch (t) {
 354         case MarkerBarItem:
 355                 ruler_items.push_back (MenuElem (_("New location marker"), bind ( mem_fun(*this, &Editor::mouse_add_new_marker), where, false, false)));
 356                 ruler_items.push_back (MenuElem (_("Clear all locations"), mem_fun(*this, &Editor::clear_markers)));
 357                 ruler_items.push_back (MenuElem (_("Unhide locations"), mem_fun(*this, &Editor::unhide_markers)));
 358                 ruler_items.push_back (SeparatorElem ());
 359                 break;
 360         case RangeMarkerBarItem:
 361                 //ruler_items.push_back (MenuElem (_("New Range")));
 362                 ruler_items.push_back (MenuElem (_("Clear all ranges"), mem_fun(*this, &Editor::clear_ranges)));
 363                 ruler_items.push_back (MenuElem (_("Unhide ranges"), mem_fun(*this, &Editor::unhide_ranges)));
 364                 ruler_items.push_back (SeparatorElem ());
 365
 366                 break;
 367         case TransportMarkerBarItem:
 368
 369                 break;
 370
 371         case CdMarkerBarItem:
 372                 // TODO
 373                 ruler_items.push_back (MenuElem (_("New CD track marker"), bind ( mem_fun(*this, &Editor::mouse_add_new_marker), where, true, false)));
 374                 break;
 375
 376
 377         case TempoBarItem:
 378                 ruler_items.push_back (MenuElem (_("New Tempo"), bind ( mem_fun(*this, &Editor::mouse_add_new_tempo_event), where)));
 379                 ruler_items.push_back (MenuElem (_("Clear tempo")));
 380                 ruler_items.push_back (SeparatorElem ());
 381                 break;
 382
 383         case MeterBarItem:
 384                 ruler_items.push_back (MenuElem (_("New Meter"), bind ( mem_fun(*this, &Editor::mouse_add_new_meter_event), where)));
 385                 ruler_items.push_back (MenuElem (_("Clear meter")));
 386                 ruler_items.push_back (SeparatorElem ());
 387                 break;
 388
 389         default:
 390                 break;
 391         }
 392
 393         Glib::RefPtr<Action> action;
 394
 395         action = ActionManager::get_action ("Rulers", "toggle-minsec-ruler");
 396         if (action) {
 397                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 398         }
 399         if (!Profile->get_sae()) {
 400                 action = ActionManager::get_action ("Rulers", "toggle-timecode-ruler");
 401                 if (action) {
 402                         ruler_items.push_back (MenuElem (*action->create_menu_item()));
 403                 }
 404         }
 405         action = ActionManager::get_action ("Rulers", "toggle-samples-ruler");
 406         if (action) {
 407                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 408         }
 409         action = ActionManager::get_action ("Rulers", "toggle-bbt-ruler");
 410         if (action) {
 411                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 412         }
 413         action = ActionManager::get_action ("Rulers", "toggle-meter-ruler");
 414         if (action) {
 415                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 416         }
 417         action = ActionManager::get_action ("Rulers", "toggle-tempo-ruler");
 418         if (action) {
 419                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 420         }
 421         if (!Profile->get_sae()) {
 422                 action = ActionManager::get_action ("Rulers", "toggle-range-ruler");
 423                 if (action) {
 424                         ruler_items.push_back (MenuElem (*action->create_menu_item()));
 425                 }
 426         }
 427         action = ActionManager::get_action ("Rulers", "toggle-loop-punch-ruler");
 428         if (action) {
 429                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 430         }
 431         action = ActionManager::get_action ("Rulers", "toggle-cd-marker-ruler");
 432         if (action) {
 433                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 434         }
 435         action = ActionManager::get_action ("Rulers", "toggle-marker-ruler");
 436         if (action) {
 437                 ruler_items.push_back (MenuElem (*action->create_menu_item()));
 438         }
 439
 440         editor_ruler_menu->popup (1, gtk_get_current_event_time());
 441
 442         no_ruler_shown_update = false;
 443 }
 444
 445 void
 446 Editor::store_ruler_visibility ()
 447 {
 448         XMLNode* node = new XMLNode(X_("RulerVisibility"));
 449
 450         node->add_property (X_("smpte"), ruler_timecode_action->get_active() ? "yes": "no");
 451         node->add_property (X_("bbt"), ruler_bbt_action->get_active() ? "yes": "no");
 452         node->add_property (X_("frames"), ruler_samples_action->get_active() ? "yes": "no");
 453         node->add_property (X_("minsec"), ruler_minsec_action->get_active() ? "yes": "no");
 454         node->add_property (X_("tempo"), ruler_tempo_action->get_active() ? "yes": "no");
 455         node->add_property (X_("meter"), ruler_meter_action->get_active() ? "yes": "no");
 456         node->add_property (X_("marker"), ruler_marker_action->get_active() ? "yes": "no");
 457         node->add_property (X_("rangemarker"), ruler_range_action->get_active() ? "yes": "no");
 458         node->add_property (X_("transportmarker"), ruler_loop_punch_action->get_active() ? "yes": "no");
 459         node->add_property (X_("cdmarker"), ruler_cd_marker_action->get_active() ? "yes": "no");
 460
 461         session->add_extra_xml (*node);
 462         session->set_dirty ();
 463 }
 464
 465 void
 466 Editor::restore_ruler_visibility ()
 467 {
 468         XMLProperty* prop;
 469         XMLNode * node = session->extra_xml (X_("RulerVisibility"));
 470
 471         no_ruler_shown_update = true;
 472
 473         if (node) {
 474                 if ((prop = node->property ("smpte")) != 0) {
 475                         if (prop->value() == "yes")
 476                                 ruler_timecode_action->set_active (true);
 477                         else
 478                                 ruler_timecode_action->set_active (false);
 479                 }
 480                 if ((prop = node->property ("bbt")) != 0) {
 481                         if (prop->value() == "yes")
 482                                 ruler_bbt_action->set_active (true);
 483                         else
 484                                 ruler_bbt_action->set_active (false);
 485                 }
 486                 if ((prop = node->property ("frames")) != 0) {
 487                         if (prop->value() == "yes")
 488                                 ruler_samples_action->set_active (true);
 489                         else
 490                                 ruler_samples_action->set_active (false);
 491                 }
 492                 if ((prop = node->property ("minsec")) != 0) {
 493                         if (prop->value() == "yes")
 494                                 ruler_minsec_action->set_active (true);
 495                         else
 496                                 ruler_minsec_action->set_active (false);
 497                 }
 498                 if ((prop = node->property ("tempo")) != 0) {
 499                         if (prop->value() == "yes")
 500                                 ruler_tempo_action->set_active (true);
 501                         else
 502                                 ruler_tempo_action->set_active (false);
 503                 }
 504                 if ((prop = node->property ("meter")) != 0) {
 505                         if (prop->value() == "yes")
 506                                 ruler_meter_action->set_active (true);
 507                         else
 508                                 ruler_meter_action->set_active (false);
 509                 }
 510                 if ((prop = node->property ("marker")) != 0) {
 511                         if (prop->value() == "yes")
 512                                 ruler_marker_action->set_active (true);
 513                         else
 514                                 ruler_marker_action->set_active (false);
 515                 }
 516                 if ((prop = node->property ("rangemarker")) != 0) {
 517                         if (prop->value() == "yes")
 518                                 ruler_range_action->set_active (true);
 519                         else
 520                                 ruler_range_action->set_active (false);
 521                 }
 522
 523                 if ((prop = node->property ("transportmarker")) != 0) {
 524                         if (prop->value() == "yes")
 525                                 ruler_loop_punch_action->set_active (true);
 526                         else
 527                                 ruler_loop_punch_action->set_active (false);
 528                 }
 529
 530                 if ((prop = node->property ("cdmarker")) != 0) {
 531                         if (prop->value() == "yes")
 532                                 ruler_cd_marker_action->set_active (true);
 533                         else
 534                                 ruler_cd_marker_action->set_active (false);
 535
 536                 } else {
 537                         // this session doesn't yet know about the cdmarker ruler
 538                         // as a benefit to the user who doesn't know the feature exists, show the ruler if
 539                         // any cd marks exist
 540                         ruler_cd_marker_action->set_active (false);
 541                         const Locations::LocationList & locs = session->locations()->list();
 542                         for (Locations::LocationList::const_iterator i = locs.begin(); i != locs.end(); ++i) {
 543                                 if ((*i)->is_cd_marker()) {
 544                                         ruler_cd_marker_action->set_active (true);
 545                                         break;
 546                                 }
 547                         }
 548                 }
 549
 550         }
 551
 552         no_ruler_shown_update = false;
 553
 554         update_ruler_visibility ();
 555 }
 556
 557 void
 558 Editor::update_ruler_visibility ()
 559 {
 560         using namespace Box_Helpers;
 561         BoxList & lab_children =  time_button_vbox.children();
 562         BoxList & ruler_children =  time_canvas_vbox.children();
 563
 564         if (no_ruler_shown_update) {
 565                 return;
 566         }
 567
 568         visible_timebars = 0;
 569
 570         lab_children.clear();
 571
 572         // leave the last one (the time_canvas) intact
 573         while (ruler_children.size() > 1) {
 574                 ruler_children.pop_front();
 575         }
 576
 577         BoxList::iterator canvaspos = ruler_children.begin();
 578
 579         _smpte_ruler = gtk_custom_hruler_new ();
 580         smpte_ruler = Glib::wrap (_smpte_ruler);
 581         smpte_ruler->set_name ("SMPTERuler");
 582         smpte_ruler->set_size_request (-1, (int)timebar_height);
 583         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_smpte_ruler), &ruler_metrics[ruler_metric_smpte]);
 584
 585         _bbt_ruler = gtk_custom_hruler_new ();
 586         bbt_ruler = Glib::wrap (_bbt_ruler);
 587         bbt_ruler->set_name ("BBTRuler");
 588         bbt_ruler->set_size_request (-1, (int)timebar_height);
 589         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_bbt_ruler), &ruler_metrics[ruler_metric_bbt]);
 590
 591         _frames_ruler = gtk_custom_hruler_new ();
 592         frames_ruler = Glib::wrap (_frames_ruler);
 593         frames_ruler->set_name ("FramesRuler");
 594         frames_ruler->set_size_request (-1, (int)timebar_height);
 595         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_frames_ruler), &ruler_metrics[ruler_metric_frames]);
 596
 597         _minsec_ruler = gtk_custom_hruler_new ();
 598         minsec_ruler = Glib::wrap (_minsec_ruler);
 599         minsec_ruler->set_name ("MinSecRuler");
 600         minsec_ruler->set_size_request (-1, (int)timebar_height);
 601         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_minsec_ruler), &ruler_metrics[ruler_metric_minsec]);
 602
 603         smpte_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 604         bbt_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 605         frames_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 606         minsec_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
 607
 608         smpte_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 609         bbt_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 610         frames_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 611         minsec_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 612
 613         smpte_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 614         bbt_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 615         frames_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 616         minsec_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 617
 618         smpte_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 619         bbt_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 620         frames_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 621         minsec_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 622
 623         smpte_ruler->signal_scroll_event().connect (mem_fun(*this, &Editor::ruler_scroll));
 624         bbt_ruler->signal_scroll_event().connect (mem_fun(*this, &Editor::ruler_scroll));
 625         frames_ruler->signal_scroll_event().connect (mem_fun(*this, &Editor::ruler_scroll));
 626         minsec_ruler->signal_scroll_event().connect (mem_fun(*this, &Editor::ruler_scroll));
 627
 628         ruler_children.insert (canvaspos, Element(*_ruler_separator, PACK_SHRINK, PACK_START));
 629
 630         if (ruler_minsec_action->get_active()) {
 631                 lab_children.push_back (Element(minsec_label, PACK_SHRINK, PACK_START));
 632                 ruler_children.insert (canvaspos, Element(*minsec_ruler, PACK_SHRINK, PACK_START));
 633                 visible_timebars++;
 634         }
 635
 636         if (ruler_timecode_action->get_active()) {
 637                 lab_children.push_back (Element(smpte_label, PACK_SHRINK, PACK_START));
 638                 ruler_children.insert (canvaspos, Element(*smpte_ruler, PACK_SHRINK, PACK_START));
 639                 visible_timebars++;
 640         }
 641
 642         if (ruler_samples_action->get_active()) {
 643                 lab_children.push_back (Element(frame_label, PACK_SHRINK, PACK_START));
 644                 ruler_children.insert (canvaspos, Element(*frames_ruler, PACK_SHRINK, PACK_START));
 645                 visible_timebars++;
 646         }
 647
 648         if (ruler_bbt_action->get_active()) {
 649                 lab_children.push_back (Element(bbt_label, PACK_SHRINK, PACK_START));
 650                 ruler_children.insert (canvaspos, Element(*bbt_ruler, PACK_SHRINK, PACK_START));
 651                 visible_timebars++;
 652         }
 653
 654         double tbpos = 1.0;
 655         double old_unit_pos ;
 656
 657         if (ruler_meter_action->get_active()) {
 658                 lab_children.push_back (Element(meter_label, PACK_SHRINK, PACK_START));
 659
 660                 old_unit_pos = meter_group->property_y();
 661                 if (tbpos != old_unit_pos) {
 662                         meter_group->move ( 0.0, tbpos - old_unit_pos);
 663                 }
 664                 meter_group->show();
 665                 tbpos += timebar_height;
 666                 visible_timebars++;
 667         }
 668         else {
 669                 meter_group->hide();
 670         }
 671
 672         if (ruler_tempo_action->get_active()) {
 673                 lab_children.push_back (Element(tempo_label, PACK_SHRINK, PACK_START));
 674                 old_unit_pos = tempo_group->property_y();
 675                 if (tbpos != old_unit_pos) {
 676                         tempo_group->move(0.0, tbpos - old_unit_pos);
 677                 }
 678                 tempo_group->show();
 679                 tbpos += timebar_height;
 680                 visible_timebars++;
 681         }
 682         else {
 683                 tempo_group->hide();
 684         }
 685
 686         if (!Profile->get_sae() && ruler_range_action->get_active()) {
 687                 lab_children.push_back (Element(range_mark_label, PACK_SHRINK, PACK_START));
 688                 old_unit_pos = range_marker_group->property_y();
 689                 if (tbpos != old_unit_pos) {
 690                         range_marker_group->move (0.0, tbpos - old_unit_pos);
 691                 }
 692                 range_marker_group->show();
 693                 cerr << "range_marker_group now at " << range_marker_group->property_y() << endl;
 694                 tbpos += timebar_height;
 695                 visible_timebars++;
 696         } else {
 697                 range_marker_group->hide();
 698         }
 699
 700         if (ruler_loop_punch_action->get_active()) {
 701                 lab_children.push_back (Element(transport_mark_label, PACK_SHRINK, PACK_START));
 702                 old_unit_pos = transport_marker_group->property_y();
 703                 if (tbpos != old_unit_pos) {
 704                         transport_marker_group->move ( 0.0, tbpos - old_unit_pos);
 705                 }
 706                 transport_marker_group->show();
 707                 tbpos += timebar_height;
 708                 visible_timebars++;
 709         }
 710         else {
 711                 transport_marker_group->hide();
 712         }
 713
 714         if (ruler_cd_marker_action->get_active()) {
 715                 lab_children.push_back (Element(cd_mark_label, PACK_SHRINK, PACK_START));
 716                 old_unit_pos = cd_marker_group->property_y();
 717                 if (tbpos != old_unit_pos) {
 718                         cd_marker_group->move (0.0, tbpos - old_unit_pos);
 719                 }
 720                 cd_marker_group->show();
 721                 tbpos += timebar_height;
 722                 visible_timebars++;
 723                 // make sure all cd markers show up in their respective places
 724                 update_cd_marker_display();
 725         }
 726         else {
 727                 cd_marker_group->hide();
 728                 // make sure all cd markers show up in their respective places
 729                 update_cd_marker_display();
 730         }
 731
 732         if (ruler_marker_action->get_active()) {
 733                 lab_children.push_back (Element(mark_label, PACK_SHRINK, PACK_START));
 734                 old_unit_pos = marker_group->property_y();
 735                 if (tbpos != old_unit_pos) {
 736                         marker_group->move ( 0.0, tbpos - old_unit_pos);
 737                 }
 738                 marker_group->show();
 739                 tbpos += timebar_height;
 740                 visible_timebars++;
 741         }
 742         else {
 743                 marker_group->hide();
 744         }
 745
 746         time_canvas_vbox.set_size_request (-1, (int)(timebar_height * visible_timebars));
 747         time_canvas_event_box.queue_resize();
 748         compute_fixed_ruler_scale();
 749         update_fixed_rulers();
 750
 751         time_canvas_event_box.show_all();
 752         time_button_frame.show_all();
 753
 754         compute_current_bbt_points (leftmost_frame, leftmost_frame + (nframes_t)(edit_packer.get_width() * frames_per_unit));
 755         compute_bbt_ruler_scale (leftmost_frame, leftmost_frame + (nframes_t)(edit_packer.get_width() * frames_per_unit));
 756
 757         redisplay_tempo (false);
 758 }
 759
 760 void
 761 Editor::update_just_smpte ()
 762 {
 763         ENSURE_GUI_THREAD(mem_fun(*this, &Editor::update_just_smpte));
 764
 765         if (session == 0) {
 766                 return;
 767         }
 768
 769         nframes_t rightmost_frame = leftmost_frame + current_page_frames();
 770
 771         if (ruler_timecode_action->get_active()) {
 772                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_smpte_ruler), leftmost_frame, rightmost_frame,
 773                                             leftmost_frame, session->current_end_frame());
 774         }
 775 }
 776
 777 void
 778 Editor::compute_fixed_ruler_scale ()
 779 {
 780         if (session == 0) {
 781                 return;
 782         }
 783
 784         if (ruler_timecode_action->get_active()) {
 785                 set_smpte_ruler_scale (leftmost_frame, leftmost_frame + (edit_packer.get_width() * frames_per_unit) );
 786         }
 787
 788         if (ruler_minsec_action->get_active()) {
 789                 set_minsec_ruler_scale (leftmost_frame, leftmost_frame + (edit_packer.get_width() * frames_per_unit) );
 790         }
 791 }
 792
 793 void
 794 Editor::update_fixed_rulers ()
 795 {
 796         nframes_t rightmost_frame;
 797
 798         if (session == 0) {
 799                 return;
 800         }
 801
 802         ruler_metrics[ruler_metric_smpte].units_per_pixel = frames_per_unit;
 803         ruler_metrics[ruler_metric_frames].units_per_pixel = frames_per_unit;
 804         ruler_metrics[ruler_metric_minsec].units_per_pixel = frames_per_unit;
 805
 806         rightmost_frame = leftmost_frame + current_page_frames ();
 807
 808         /* these force a redraw, which in turn will force execution of the metric callbacks
 809            to compute the relevant ticks to display.
 810         */
 811
 812         if (ruler_timecode_action->get_active()) {
 813                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_smpte_ruler), leftmost_frame, rightmost_frame,
 814                                             leftmost_frame, session->current_end_frame());
 815         }
 816
 817         if (ruler_samples_action->get_active()) {
 818                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_frames_ruler), leftmost_frame, rightmost_frame,
 819                                             leftmost_frame, session->current_end_frame());
 820         }
 821
 822         if (ruler_minsec_action->get_active()) {
 823                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_minsec_ruler), leftmost_frame, rightmost_frame,
 824                                             leftmost_frame, session->current_end_frame());
 825         }
 826 }
 827
 828 void
 829 Editor::update_tempo_based_rulers ()
 830 {
 831         if (session == 0) {
 832                 return;
 833         }
 834
 835         ruler_metrics[ruler_metric_bbt].units_per_pixel = frames_per_unit;
 836
 837         if (ruler_bbt_action->get_active()) {
 838                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_bbt_ruler), leftmost_frame, leftmost_frame+current_page_frames(),
 839                                             leftmost_frame, session->current_end_frame());
 840         }
 841 }
 842
 843 /* Mark generation */
 844
 845 gint
 846 Editor::_metric_get_smpte (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 847 {
 848         return ruler_editor->metric_get_smpte (marks, lower, upper, maxchars);
 849 }
 850
 851 gint
 852 Editor::_metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 853 {
 854         return ruler_editor->metric_get_bbt (marks, lower, upper, maxchars);
 855 }
 856
 857 gint
 858 Editor::_metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 859 {
 860         return ruler_editor->metric_get_frames (marks, lower, upper, maxchars);
 861 }
 862
 863 gint
 864 Editor::_metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 865 {
 866         return ruler_editor->metric_get_minsec (marks, lower, upper, maxchars);
 867 }
 868
 869 void
 870 Editor::set_smpte_ruler_scale (gdouble lower, gdouble upper)
 871 {
 872         nframes_t range;
 873         nframes_t spacer;
 874         nframes_t fr;
 875
 876         if (session == 0) {
 877                 return;
 878         }
 879
 880         fr = session->frame_rate();
 881
 882         if (lower > (spacer = (nframes_t)(128 * Editor::get_current_zoom ()))) {
 883                 lower = lower - spacer;
 884         } else {
 885                 lower = 0;
 886         }
 887         upper = upper + spacer;
 888         range = (nframes_t) floor (upper - lower);
 889
 890         if (range < (2 * session->frames_per_smpte_frame())) { /* 0 - 2 frames */
 891                 smpte_ruler_scale = smpte_show_bits;
 892                 smpte_mark_modulo = 20;
 893                 smpte_nmarks = 2 + (2 * Config->get_subframes_per_frame());
 894         } else if (range <= (fr / 4)) { /* 2 frames - 0.250 second */
 895                 smpte_ruler_scale = smpte_show_frames;
 896                 smpte_mark_modulo = 1;
 897                 smpte_nmarks = 2 + (range / (nframes_t)session->frames_per_smpte_frame());
 898         } else if (range <= (fr / 2)) { /* 0.25-0.5 second */
 899                 smpte_ruler_scale = smpte_show_frames;
 900                 smpte_mark_modulo = 2;
 901                 smpte_nmarks = 2 + (range / (nframes_t)session->frames_per_smpte_frame());
 902         } else if (range <= fr) { /* 0.5-1 second */
 903                 smpte_ruler_scale = smpte_show_frames;
 904                 smpte_mark_modulo = 5;
 905                 smpte_nmarks = 2 + (range / (nframes_t)session->frames_per_smpte_frame());
 906         } else if (range <= 2 * fr) { /* 1-2 seconds */
 907                 smpte_ruler_scale = smpte_show_frames;
 908                 smpte_mark_modulo = 10;
 909                 smpte_nmarks = 2 + (range / (nframes_t)session->frames_per_smpte_frame());
 910         } else if (range <= 8 * fr) { /* 2-8 seconds */
 911                 smpte_ruler_scale = smpte_show_seconds;
 912                 smpte_mark_modulo = 1;
 913                 smpte_nmarks = 2 + (range / fr);
 914         } else if (range <= 16 * fr) { /* 8-16 seconds */
 915                 smpte_ruler_scale = smpte_show_seconds;
 916                 smpte_mark_modulo = 2;
 917                 smpte_nmarks = 2 + (range / fr);
 918         } else if (range <= 30 * fr) { /* 16-30 seconds */
 919                 smpte_ruler_scale = smpte_show_seconds;
 920                 smpte_mark_modulo = 5;
 921                 smpte_nmarks = 2 + (range / fr);
 922         } else if (range <= 60 * fr) { /* 30-60 seconds */
 923                 smpte_ruler_scale = smpte_show_seconds;
 924                 smpte_mark_modulo = 5;
 925                 smpte_nmarks = 2 + (range / fr);
 926         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
 927                 smpte_ruler_scale = smpte_show_seconds;
 928                 smpte_mark_modulo = 15;
 929                 smpte_nmarks = 2 + (range / fr);
 930         } else if (range <= 4 * 60 * fr) { /* 2-4 minutes */
 931                 smpte_ruler_scale = smpte_show_seconds;
 932                 smpte_mark_modulo = 30;
 933                 smpte_nmarks = 2 + (range / fr);
 934         } else if (range <= 10 * 60 * fr) { /* 4-10 minutes */
 935                 smpte_ruler_scale = smpte_show_minutes;
 936                 smpte_mark_modulo = 2;
 937                 smpte_nmarks = 2 + 10;
 938         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
 939                 smpte_ruler_scale = smpte_show_minutes;
 940                 smpte_mark_modulo = 5;
 941                 smpte_nmarks = 2 + 30;
 942         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
 943                 smpte_ruler_scale = smpte_show_minutes;
 944                 smpte_mark_modulo = 10;
 945                 smpte_nmarks = 2 + 60;
 946         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
 947                 smpte_ruler_scale = smpte_show_minutes;
 948                 smpte_mark_modulo = 30;
 949                 smpte_nmarks = 2 + (60 * 4);
 950         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
 951                 smpte_ruler_scale = smpte_show_hours;
 952                 smpte_mark_modulo = 1;
 953                 smpte_nmarks = 2 + 8;
 954         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
 955                 smpte_ruler_scale = smpte_show_hours;
 956                 smpte_mark_modulo = 1;
 957                 smpte_nmarks = 2 + 24;
 958         } else {
 959
 960                 /* not possible if nframes_t is a 32 bit quantity */
 961
 962                 smpte_ruler_scale = smpte_show_hours;
 963                 smpte_mark_modulo = 4;
 964                 smpte_nmarks = 2 + 24;
 965         }
 966
 967 }
 968
 969 gint
 970 Editor::metric_get_smpte (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 971 {
 972         nframes_t pos;
 973         nframes_t spacer;
 974         SMPTE::Time smpte;
 975         gchar buf[16];
 976         gint n;
 977
 978         if (session == 0) {
 979                 return 0;
 980         }
 981
 982         if (lower > (spacer = (nframes_t)(128 * Editor::get_current_zoom ()))) {
 983                 lower = lower - spacer;
 984         } else {
 985                 lower = 0;
 986         }
 987
 988         pos = (nframes_t) floor (lower);
 989
 990         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * smpte_nmarks);
 991         switch (smpte_ruler_scale) {
 992         case smpte_show_bits:
 993
 994                 // Find smpte time of this sample (pos) with subframe accuracy
 995                 session->sample_to_smpte(pos, smpte, true /* use_offset */, true /* use_subframes */ );
 996
 997                 for (n = 0; n < smpte_nmarks; n++) {
 998                         session->smpte_to_sample(smpte, pos, true /* use_offset */, true /* use_subframes */ );
 999                         if ((smpte.subframes % smpte_mark_modulo) == 0) {
1000                                 if (smpte.subframes == 0) {
1001                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1002                                         snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
1003                                 } else {
1004                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1005                                         snprintf (buf, sizeof(buf), ".%02u", smpte.subframes);
1006                                 }
1007                         } else {
1008                                 snprintf (buf, sizeof(buf)," ");
1009                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1010
1011                         }
1012                         (*marks)[n].label = g_strdup (buf);
1013                         (*marks)[n].position = pos;
1014
1015                         // Increment subframes by one
1016                         SMPTE::increment_subframes( smpte );
1017                 }
1018           break;
1019         case smpte_show_seconds:
1020                 // Find smpte time of this sample (pos)
1021                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
1022                 // Go to next whole second down
1023                 SMPTE::seconds_floor( smpte );
1024
1025                 for (n = 0; n < smpte_nmarks; n++) {
1026                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
1027                         if ((smpte.seconds % smpte_mark_modulo) == 0) {
1028                                 if (smpte.seconds == 0) {
1029                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1030                                         (*marks)[n].position = pos;
1031                                 } else {
1032                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1033                                         (*marks)[n].position = pos;
1034                                 }
1035                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
1036                         } else {
1037                                 snprintf (buf, sizeof(buf)," ");
1038                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1039                                 (*marks)[n].position = pos;
1040
1041                         }
1042                         (*marks)[n].label = g_strdup (buf);
1043                         SMPTE::increment_seconds( smpte );
1044                 }
1045           break;
1046         case smpte_show_minutes:
1047                 // Find smpte time of this sample (pos)
1048                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
1049                 // Go to next whole minute down
1050                 SMPTE::minutes_floor( smpte );
1051
1052                 for (n = 0; n < smpte_nmarks; n++) {
1053                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
1054                         if ((smpte.minutes % smpte_mark_modulo) == 0) {
1055                                 if (smpte.minutes == 0) {
1056                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1057                                 } else {
1058                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1059                                 }
1060                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
1061                         } else {
1062                                 snprintf (buf, sizeof(buf)," ");
1063                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1064
1065                         }
1066                         (*marks)[n].label = g_strdup (buf);
1067                         (*marks)[n].position = pos;
1068                         SMPTE::increment_minutes( smpte );
1069                 }
1070
1071           break;
1072         case smpte_show_hours:
1073                 // Find smpte time of this sample (pos)
1074                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
1075                 // Go to next whole hour down
1076                 SMPTE::hours_floor( smpte );
1077
1078                 for (n = 0; n < smpte_nmarks; n++) {
1079                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
1080                         if ((smpte.hours % smpte_mark_modulo) == 0) {
1081                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1082                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
1083                         } else {
1084                                 snprintf (buf, sizeof(buf)," ");
1085                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1086
1087                         }
1088                         (*marks)[n].label = g_strdup (buf);
1089                         (*marks)[n].position = pos;
1090
1091                         SMPTE::increment_hours( smpte );
1092                 }
1093           break;
1094         case smpte_show_frames:
1095                 // Find smpte time of this sample (pos)
1096                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
1097                 // Go to next whole frame down
1098                 SMPTE::frames_floor( smpte );
1099
1100                 for (n = 0; n < smpte_nmarks; n++) {
1101                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
1102                         if ((smpte.frames % smpte_mark_modulo) == 0)  {
1103                                 if (smpte.frames == 0) {
1104                                   (*marks)[n].style = GtkCustomRulerMarkMajor;
1105                                 } else {
1106                                   (*marks)[n].style = GtkCustomRulerMarkMinor;
1107                                 }
1108                                 (*marks)[n].position = pos;
1109                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
1110                         } else {
1111                                 snprintf (buf, sizeof(buf)," ");
1112                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1113                                 (*marks)[n].position = pos;
1114
1115                         }
1116                         (*marks)[n].label = g_strdup (buf);
1117                         SMPTE::increment( smpte );
1118                 }
1119
1120           break;
1121         }
1122
1123         return smpte_nmarks;
1124 }
1125
1126
1127 void
1128 Editor::compute_bbt_ruler_scale (nframes_t lower, nframes_t upper)
1129 {
1130         if (session == 0) {
1131                 return;
1132         }
1133         TempoMap::BBTPointList::iterator i;
1134         BBT_Time lower_beat, upper_beat; // the beats at each end of the ruler
1135
1136         session->bbt_time((jack_nframes_t) lower, lower_beat);
1137         session->bbt_time((jack_nframes_t) upper, upper_beat);
1138         uint32_t beats = 0;
1139
1140         bbt_accent_modulo = 1;
1141         bbt_bar_helper_on = false;
1142         bbt_bars = 0;
1143         bbt_nmarks = 1;
1144
1145         bbt_ruler_scale =  bbt_over;
1146
1147         switch (snap_type) {
1148         case SnapToAThirdBeat:
1149                 bbt_beat_subdivision = 3;
1150                 break;
1151         case SnapToAQuarterBeat:
1152                 bbt_beat_subdivision = 4;
1153                 break;
1154         case SnapToAEighthBeat:
1155                 bbt_beat_subdivision = 8;
1156                 bbt_accent_modulo = 2;
1157                 break;
1158         case SnapToASixteenthBeat:
1159                 bbt_beat_subdivision = 16;
1160                 bbt_accent_modulo = 4;
1161                 break;
1162         case SnapToAThirtysecondBeat:
1163                 bbt_beat_subdivision = 32;
1164                 bbt_accent_modulo = 8;
1165                 break;
1166         default:
1167                 bbt_beat_subdivision = 4;
1168                 break;
1169         }
1170
1171         if (current_bbt_points == 0 || current_bbt_points->empty()) {
1172                 return;
1173         }
1174
1175         i = current_bbt_points->end();
1176         i--;
1177         if ((*i).beat >= (*current_bbt_points->begin()).beat) {
1178           bbt_bars = (*i).bar - (*current_bbt_points->begin()).bar;
1179         } else {
1180           bbt_bars = (*i).bar - (*current_bbt_points->begin()).bar - 1;
1181         }
1182         beats = current_bbt_points->size() - bbt_bars;
1183
1184         /*Only show the bar helper if there aren't many bars on the screen */
1185         if ((bbt_bars < 2) || (beats < 5)) {
1186                 bbt_bar_helper_on = true;
1187         }
1188
1189         if (bbt_bars > 8192) {
1190           bbt_ruler_scale =  bbt_over;
1191         } else if (bbt_bars > 1024) {
1192           bbt_ruler_scale = bbt_show_64;
1193         } else if (bbt_bars > 256) {
1194           bbt_ruler_scale = bbt_show_16;
1195         } else if (bbt_bars > 64) {
1196           bbt_ruler_scale = bbt_show_4;
1197         } else if (bbt_bars > 10) {
1198           bbt_ruler_scale =  bbt_show_1;
1199         } else if (bbt_bars > 2) {
1200           bbt_ruler_scale =  bbt_show_beats;
1201         } else  if (bbt_bars > 0) {
1202           bbt_ruler_scale =  bbt_show_ticks;
1203         } else {
1204           bbt_ruler_scale =  bbt_show_ticks_detail;
1205         }
1206
1207         if ((bbt_ruler_scale == bbt_show_ticks_detail) && (lower_beat.beats == upper_beat.beats) && (upper_beat.ticks - lower_beat.ticks <= Meter::ticks_per_beat / 4)) {
1208                 bbt_ruler_scale =  bbt_show_ticks_super_detail;
1209         }
1210 }
1211
1212 gint
1213 Editor::metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
1214 {
1215         if (session == 0) {
1216                 return 0;
1217         }
1218
1219         TempoMap::BBTPointList::iterator i;
1220
1221         char buf[64];
1222         gint  n = 0;
1223         nframes_t pos;
1224         BBT_Time next_beat;
1225         nframes_t next_beat_pos;
1226         uint32_t beats = 0;
1227
1228         uint32_t tick = 0;
1229         uint32_t skip;
1230         uint32_t t;
1231         nframes_t frame_skip;
1232         double frame_skip_error;
1233         double bbt_position_of_helper;
1234         double accumulated_error;
1235         bool i_am_accented = false;
1236         bool helper_active = false;
1237
1238         if (current_bbt_points == 0 || current_bbt_points->empty()) {
1239                 return 0;
1240         }
1241
1242         switch (bbt_ruler_scale) {
1243
1244         case bbt_show_beats:
1245                 beats = current_bbt_points->size();
1246                 bbt_nmarks = beats + 2;
1247
1248                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1249
1250                 (*marks)[0].label = g_strdup(" ");
1251                 (*marks)[0].position = lower;
1252                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1253
1254                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1255                         if  ((*i).type != TempoMap::Beat) {
1256                                 continue;
1257                         }
1258                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1259                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1260                                 (*marks)[0].label = g_strdup (buf);
1261                                 helper_active = true;
1262                         } else {
1263
1264                                 if ((*i).beat == 1) {
1265                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1266                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1267                                 } else if (((*i).beat % 2 == 1)) {
1268                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1269                                         snprintf (buf, sizeof(buf), " ");
1270                                 } else {
1271                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1272                                         snprintf (buf, sizeof(buf), " ");
1273                                 }
1274                                 (*marks)[n].label =  g_strdup (buf);
1275                                 (*marks)[n].position = (*i).frame;
1276                                 n++;
1277                         }
1278                 }
1279                 break;
1280
1281         case bbt_show_ticks:
1282
1283                 beats = current_bbt_points->size();
1284                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1285
1286                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1287                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1288
1289                 (*marks)[0].label = g_strdup(" ");
1290                 (*marks)[0].position = lower;
1291                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1292
1293                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1294                         if  ((*i).type != TempoMap::Beat) {
1295                                 continue;
1296                         }
1297                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1298                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1299                                 (*marks)[0].label = g_strdup (buf);
1300                                 helper_active = true;
1301                         } else {
1302
1303                                 if ((*i).beat == 1) {
1304                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1305                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1306                                 } else {
1307                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1308                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1309                                 }
1310                                 if (((*i).frame < bbt_position_of_helper) && helper_active) {
1311                                         snprintf (buf, sizeof(buf), " ");
1312                                 }
1313                                 (*marks)[n].label =  g_strdup (buf);
1314                                 (*marks)[n].position = (*i).frame;
1315                                 n++;
1316                         }
1317
1318                         /* Add the tick marks */
1319
1320                         /* Find the next beat */
1321                         next_beat.beats = (*i).beat;
1322                         next_beat.bars = (*i).bar;
1323                         next_beat.ticks = 0;
1324
1325                         if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1326                                   next_beat.beats += 1;
1327                         } else {
1328                                   next_beat.bars += 1;
1329                                   next_beat.beats = 1;
1330                         }
1331
1332                         next_beat_pos = session->tempo_map().frame_time(next_beat);
1333
1334                         frame_skip = (nframes_t) floor (frame_skip_error = (session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1335                         frame_skip_error -= frame_skip;
1336                         skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);
1337
1338                         pos = (*i).frame + frame_skip;
1339                         accumulated_error = frame_skip_error;
1340
1341                         tick = skip;
1342
1343                         for (t = 0; (tick < Meter::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1344
1345                                 if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1346                                         i_am_accented = true;
1347                                 }
1348
1349                                 snprintf (buf, sizeof(buf), " ");
1350                                 (*marks)[n].label = g_strdup (buf);
1351
1352                                 /* Error compensation for float to nframes_t*/
1353                                 accumulated_error += frame_skip_error;
1354                                 if (accumulated_error > 1) {
1355                                         pos += 1;
1356                                         accumulated_error -= 1.0f;
1357                                 }
1358
1359                                 (*marks)[n].position = pos;
1360
1361                                 if ((bbt_beat_subdivision > 4) && i_am_accented) {
1362                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1363                                 } else {
1364                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1365                                 }
1366                                 i_am_accented = false;
1367                                 n++;
1368                         }
1369                 }
1370
1371           break;
1372
1373         case bbt_show_ticks_detail:
1374
1375                 beats = current_bbt_points->size();
1376                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1377
1378                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1379                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1380
1381                 (*marks)[0].label = g_strdup(" ");
1382                 (*marks)[0].position = lower;
1383                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1384
1385                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1386                         if  ((*i).type != TempoMap::Beat) {
1387                                 continue;
1388                         }
1389                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1390                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1391                                 (*marks)[0].label = g_strdup (buf);
1392                                 helper_active = true;
1393                         } else {
1394
1395                                 if ((*i).beat == 1) {
1396                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1397                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1398                                 } else {
1399                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1400                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1401                                 }
1402                                 if (((*i).frame < bbt_position_of_helper) && helper_active) {
1403                                         snprintf (buf, sizeof(buf), " ");
1404                                 }
1405                                 (*marks)[n].label =  g_strdup (buf);
1406                                 (*marks)[n].position = (*i).frame;
1407                                 n++;
1408                         }
1409
1410                         /* Add the tick marks */
1411
1412                         /* Find the next beat */
1413
1414                         next_beat.beats = (*i).beat;
1415                         next_beat.bars = (*i).bar;
1416
1417                         if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1418                                   next_beat.beats += 1;
1419                         } else {
1420                                   next_beat.bars += 1;
1421                                   next_beat.beats = 1;
1422                         }
1423
1424                         next_beat_pos = session->tempo_map().frame_time(next_beat);
1425
1426                         frame_skip = (nframes_t) floor (frame_skip_error = (session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1427                         frame_skip_error -= frame_skip;
1428                         skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);
1429
1430                         pos = (*i).frame + frame_skip;
1431                         accumulated_error = frame_skip_error;
1432
1433                         tick = skip;
1434
1435                         for (t = 0; (tick < Meter::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1436
1437                                 if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1438                                         i_am_accented = true;
1439                                 }
1440
1441                                 if (i_am_accented && (pos > bbt_position_of_helper)){
1442                                         snprintf (buf, sizeof(buf), "%" PRIu32, tick);
1443                                 } else {
1444                                         snprintf (buf, sizeof(buf), " ");
1445                                 }
1446
1447                                 (*marks)[n].label = g_strdup (buf);
1448
1449                                 /* Error compensation for float to nframes_t*/
1450                                 accumulated_error += frame_skip_error;
1451                                 if (accumulated_error > 1) {
1452                                         pos += 1;
1453                                         accumulated_error -= 1.0f;
1454                                 }
1455
1456                                 (*marks)[n].position = pos;
1457
1458                                 if ((bbt_beat_subdivision > 4) && i_am_accented) {
1459                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1460                                 } else {
1461                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1462                                 }
1463                                 i_am_accented = false;
1464                                 n++;
1465                         }
1466                 }
1467
1468           break;
1469
1470         case bbt_show_ticks_super_detail:
1471
1472                 beats = current_bbt_points->size();
1473                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1474
1475                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1476                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1477
1478                 (*marks)[0].label = g_strdup(" ");
1479                 (*marks)[0].position = lower;
1480                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1481
1482                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1483                         if  ((*i).type != TempoMap::Beat) {
1484                                   continue;
1485                         }
1486                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1487                                   snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1488                                   (*marks)[0].label = g_strdup (buf);
1489                                   helper_active = true;
1490                         } else {
1491
1492                                   if ((*i).beat == 1) {
1493                                           (*marks)[n].style = GtkCustomRulerMarkMajor;
1494                                           snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1495                                   } else {
1496                                           (*marks)[n].style = GtkCustomRulerMarkMinor;
1497                                           snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1498                                   }
1499                                   if (((*i).frame < bbt_position_of_helper) && helper_active) {
1500                                           snprintf (buf, sizeof(buf), " ");
1501                                   }
1502                                   (*marks)[n].label =  g_strdup (buf);
1503                                   (*marks)[n].position = (*i).frame;
1504                                   n++;
1505                         }
1506
1507                         /* Add the tick marks */
1508
1509                         /* Find the next beat */
1510
1511                         next_beat.beats = (*i).beat;
1512                         next_beat.bars = (*i).bar;
1513
1514                         if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1515                                   next_beat.beats += 1;
1516                         } else {
1517                                   next_beat.bars += 1;
1518                                   next_beat.beats = 1;
1519                         }
1520
1521                         next_beat_pos = session->tempo_map().frame_time(next_beat);
1522
1523                         frame_skip = (nframes_t) floor (frame_skip_error = (session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1524                         frame_skip_error -= frame_skip;
1525                         skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);
1526
1527                         pos = (*i).frame + frame_skip;
1528                         accumulated_error = frame_skip_error;
1529
1530                         tick = skip;
1531
1532                         for (t = 0; (tick < Meter::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1533
1534                                   if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1535                                           i_am_accented = true;
1536                                   }
1537
1538                                   if (pos > bbt_position_of_helper) {
1539                                           snprintf (buf, sizeof(buf), "%" PRIu32, tick);
1540                                   } else {
1541                                           snprintf (buf, sizeof(buf), " ");
1542                                   }
1543
1544                                   (*marks)[n].label = g_strdup (buf);
1545
1546                                   /* Error compensation for float to nframes_t*/
1547                                   accumulated_error += frame_skip_error;
1548                                   if (accumulated_error > 1) {
1549                                           pos += 1;
1550                                           accumulated_error -= 1.0f;
1551                                   }
1552
1553                                   (*marks)[n].position = pos;
1554
1555                                   if ((bbt_beat_subdivision > 4) && i_am_accented) {
1556                                           (*marks)[n].style = GtkCustomRulerMarkMinor;
1557                                   } else {
1558                                           (*marks)[n].style = GtkCustomRulerMarkMicro;
1559                                   }
1560                                   i_am_accented = false;
1561                                   n++;
1562                         }
1563                 }
1564
1565           break;
1566
1567         case bbt_over:
1568                         bbt_nmarks = 1;
1569                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1570                         snprintf (buf, sizeof(buf), "cannot handle %" PRIu32 " bars", bbt_bars );
1571                         (*marks)[0].style = GtkCustomRulerMarkMajor;
1572                         (*marks)[0].label = g_strdup (buf);
1573                         (*marks)[0].position = lower;
1574                         n = 1;
1575
1576           break;
1577
1578         case bbt_show_64:
1579                         bbt_nmarks = (gint) (bbt_bars / 64) + 1;
1580                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1581                         for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; i++) {
1582                                 if ((*i).type == TempoMap::Bar)  {
1583                                         if ((*i).bar % 64 == 1) {
1584                                                 if ((*i).bar % 256 == 1) {
1585                                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1586                                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1587                                                 } else {
1588                                                         snprintf (buf, sizeof(buf), " ");
1589                                                         if ((*i).bar % 256 == 129)  {
1590                                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1591                                                         } else {
1592                                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1593                                                         }
1594                                                 }
1595                                                 (*marks)[n].label = g_strdup (buf);
1596                                                 (*marks)[n].position = (*i).frame;
1597                                                 n++;
1598                                         }
1599                                 }
1600                         }
1601                         break;
1602
1603         case bbt_show_16:
1604                 bbt_nmarks = (bbt_bars / 16) + 1;
1605                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1606                 for (n = 0,  i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; i++) {
1607                         if ((*i).type == TempoMap::Bar)  {
1608                           if ((*i).bar % 16 == 1) {
1609                                 if ((*i).bar % 64 == 1) {
1610                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1611                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1612                                 } else {
1613                                         snprintf (buf, sizeof(buf), " ");
1614                                         if ((*i).bar % 64 == 33)  {
1615                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1616                                         } else {
1617                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1618                                         }
1619                                 }
1620                                 (*marks)[n].label = g_strdup (buf);
1621                                 (*marks)[n].position = (*i).frame;
1622                                 n++;
1623                           }
1624                         }
1625                 }
1626           break;
1627
1628         case bbt_show_4:
1629                 bbt_nmarks = (bbt_bars / 4) + 1;
1630                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1631                 for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; ++i) {
1632                         if ((*i).type == TempoMap::Bar)  {
1633                           if ((*i).bar % 4 == 1) {
1634                                 if ((*i).bar % 16 == 1) {
1635                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1636                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1637                                 } else {
1638                                         snprintf (buf, sizeof(buf), " ");
1639                                         if ((*i).bar % 16 == 9)  {
1640                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1641                                         } else {
1642                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1643                                         }
1644                                 }
1645                                 (*marks)[n].label = g_strdup (buf);
1646                                 (*marks)[n].position = (*i).frame;
1647                                 n++;
1648                           }
1649                         }
1650                 }
1651           break;
1652
1653         case bbt_show_1:
1654   //    default:
1655                 bbt_nmarks = bbt_bars + 2;
1656                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks );
1657                 for (n = 0,  i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; i++) {
1658                         if ((*i).type == TempoMap::Bar)  {
1659                           if ((*i).bar % 4 == 1) {
1660                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1661                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1662                           } else {
1663                                 snprintf (buf, sizeof(buf), " ");
1664                                 if ((*i).bar % 4 == 3)  {
1665                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1666                                 } else {
1667                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1668                                 }
1669                           }
1670                         (*marks)[n].label = g_strdup (buf);
1671                         (*marks)[n].position = (*i).frame;
1672                         n++;
1673                         }
1674                 }
1675
1676         break;
1677
1678         }
1679
1680         return n; //return the actual number of marks made, since we might have skipped some from fractional time signatures
1681
1682 }
1683
1684 gint
1685 Editor::metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
1686 {
1687         nframes_t mark_interval;
1688         nframes_t pos;
1689         nframes_t ilower = (nframes_t) floor (lower);
1690         nframes_t iupper = (nframes_t) floor (upper);
1691         gchar buf[16];
1692         gint nmarks;
1693         gint n;
1694
1695         if (session == 0) {
1696                 return 0;
1697         }
1698
1699         mark_interval = (iupper - ilower) / 5;
1700         if (mark_interval > session->frame_rate()) {
1701                 mark_interval -= mark_interval % session->frame_rate();
1702         } else {
1703                 mark_interval = session->frame_rate() / (session->frame_rate() / mark_interval ) ;
1704         }
1705         nmarks = 5;
1706         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1707         for (n = 0, pos = ilower; n < nmarks; pos += mark_interval, ++n) {
1708                 snprintf (buf, sizeof(buf), "%u", pos);
1709                 (*marks)[n].label = g_strdup (buf);
1710                 (*marks)[n].position = pos;
1711                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1712         }
1713
1714         return nmarks;
1715 }
1716
1717 static void
1718 sample_to_clock_parts ( nframes_t sample,
1719                         nframes_t sample_rate,
1720                         long *hrs_p,
1721                         long *mins_p,
1722                         long *secs_p,
1723                         long *millisecs_p)
1724
1725 {
1726         nframes_t left;
1727         long hrs;
1728         long mins;
1729         long secs;
1730         long millisecs;
1731
1732         left = sample;
1733         hrs = left / (sample_rate * 60 * 60);
1734         left -= hrs * sample_rate * 60 * 60;
1735         mins = left / (sample_rate * 60);
1736         left -= mins * sample_rate * 60;
1737         secs = left / sample_rate;
1738         left -= secs * sample_rate;
1739         millisecs = left * 1000 / sample_rate;
1740
1741         *millisecs_p = millisecs;
1742         *secs_p = secs;
1743         *mins_p = mins;
1744         *hrs_p = hrs;
1745
1746         return;
1747 }
1748
1749 void
1750 Editor::set_minsec_ruler_scale (gdouble lower, gdouble upper)
1751 {
1752         nframes_t range;
1753         nframes_t fr;
1754         nframes_t spacer;
1755
1756         if (session == 0) {
1757                 return;
1758         }
1759
1760         fr = session->frame_rate();
1761
1762         /* to prevent 'flashing' */
1763         if (lower > (spacer = (nframes_t)(128 * Editor::get_current_zoom ()))) {
1764                 lower -= spacer;
1765         } else {
1766                 lower = 0;
1767         }
1768         upper += spacer;
1769         range = (nframes_t) (upper - lower);
1770
1771         if (range <  (fr / 50)) {
1772                 minsec_mark_interval =  fr / 1000; /* show 1/1000 seconds */
1773                 minsec_ruler_scale = minsec_show_frames;
1774                 minsec_mark_modulo = 10;
1775         } else if (range <= (fr / 10)) { /* 0-0.1 second */
1776                 minsec_mark_interval = fr / 1000; /* show 1/1000 seconds */
1777                 minsec_ruler_scale = minsec_show_frames;
1778                 minsec_mark_modulo = 10;
1779         } else if (range <= (fr / 2)) { /* 0-0.5 second */
1780                 minsec_mark_interval = fr / 100;  /* show 1/100 seconds */
1781                 minsec_ruler_scale = minsec_show_frames;
1782                 minsec_mark_modulo = 100;
1783         } else if (range <= fr) { /* 0-1 second */
1784                 minsec_mark_interval = fr / 10;  /* show 1/10 seconds */
1785                 minsec_ruler_scale = minsec_show_frames;
1786                 minsec_mark_modulo = 200;
1787         } else if (range <= 2 * fr) { /* 1-2 seconds */
1788                 minsec_mark_interval = fr / 10; /* show 1/10 seconds */
1789                 minsec_ruler_scale = minsec_show_frames;
1790                 minsec_mark_modulo = 500;
1791         } else if (range <= 8 * fr) { /* 2-5 seconds */
1792                 minsec_mark_interval =  fr / 5; /* show 2 seconds */
1793                 minsec_ruler_scale = minsec_show_frames;
1794                 minsec_mark_modulo = 1000;
1795         } else if (range <= 16 * fr) { /* 8-16 seconds */
1796                 minsec_mark_interval =  fr; /* show 1 seconds */
1797                 minsec_ruler_scale = minsec_show_seconds;
1798                 minsec_mark_modulo = 2;
1799         } else if (range <= 30 * fr) { /* 10-30 seconds */
1800                 minsec_mark_interval =  fr; /* show 1 seconds */
1801                 minsec_ruler_scale = minsec_show_seconds;
1802                 minsec_mark_modulo = 5;
1803         } else if (range <= 60 * fr) { /* 30-60 seconds */
1804                 minsec_mark_interval = fr; /* show 1 seconds */
1805                 minsec_ruler_scale = minsec_show_seconds;
1806                 minsec_mark_modulo = 5;
1807         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
1808                 minsec_mark_interval = 5 * fr; /* show 5 seconds */
1809                 minsec_ruler_scale = minsec_show_seconds;
1810                 minsec_mark_modulo = 3;
1811         } else if (range <= 4 * 60 * fr) { /* 4 minutes */
1812                 minsec_mark_interval = 5 * fr; /* show 10 seconds */
1813                 minsec_ruler_scale = minsec_show_seconds;
1814                 minsec_mark_modulo = 30;
1815         } else if (range <= 10 * 60 * fr) { /* 10 minutes */
1816                 minsec_mark_interval = 30 * fr; /* show 30 seconds */
1817                 minsec_ruler_scale = minsec_show_seconds;
1818                 minsec_mark_modulo = 120;
1819         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
1820                 minsec_mark_interval =  60 * fr; /* show 1 minute */
1821                 minsec_ruler_scale = minsec_show_minutes;
1822                 minsec_mark_modulo = 5;
1823         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
1824                 minsec_mark_interval = 2 * 60 * fr; /* show 2 minutes */
1825                 minsec_ruler_scale = minsec_show_minutes;
1826                 minsec_mark_modulo = 10;
1827         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
1828                 minsec_mark_interval = 5 * 60 * fr; /* show 10 minutes */
1829                 minsec_ruler_scale = minsec_show_minutes;
1830                 minsec_mark_modulo = 30;
1831         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
1832                 minsec_mark_interval = 20 * 60 * fr; /* show 20 minutes */
1833                 minsec_ruler_scale = minsec_show_minutes;
1834                 minsec_mark_modulo = 60;
1835         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
1836                 minsec_mark_interval =  60 * 60 * fr; /* show 60 minutes */
1837                 minsec_ruler_scale = minsec_show_hours;
1838                 minsec_mark_modulo = 2;
1839         } else {
1840
1841                 /* not possible if nframes_t is a 32 bit quantity */
1842
1843                 minsec_mark_interval = 4 * 60 * 60 * fr; /* show 4 hrs */
1844         }
1845         minsec_nmarks = 2 + (range / minsec_mark_interval);
1846 }
1847
1848 gint
1849 Editor::metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
1850 {
1851         nframes_t pos;
1852         nframes_t spacer;
1853         long hrs, mins, secs, millisecs;
1854         gchar buf[16];
1855         gint n;
1856
1857         if (session == 0) {
1858                 return 0;
1859         }
1860
1861         /* to prevent 'flashing' */
1862         if (lower > (spacer = (nframes_t)(128 * Editor::get_current_zoom ()))) {
1863                 lower = lower - spacer;
1864         } else {
1865                 lower = 0;
1866         }
1867
1868         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * minsec_nmarks);
1869         pos = ((((nframes_t) floor(lower)) + (minsec_mark_interval/2))/minsec_mark_interval) * minsec_mark_interval;
1870         switch (minsec_ruler_scale) {
1871         case minsec_show_seconds:
1872                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1873                         sample_to_clock_parts (pos, session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1874                         if (secs % minsec_mark_modulo == 0) {
1875                                 if (secs == 0) {
1876                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1877                                 } else {
1878                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1879                                 }
1880                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1881                         } else {
1882                                 snprintf (buf, sizeof(buf), " ");
1883                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1884                         }
1885                         (*marks)[n].label = g_strdup (buf);
1886                         (*marks)[n].position = pos;
1887                 }
1888           break;
1889         case minsec_show_minutes:
1890                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1891                         sample_to_clock_parts (pos, session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1892                         if (mins % minsec_mark_modulo == 0) {
1893                                 if (mins == 0) {
1894                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1895                                 } else {
1896                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1897                                 }
1898                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1899                         } else {
1900                                 snprintf (buf, sizeof(buf), " ");
1901                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1902                         }
1903                         (*marks)[n].label = g_strdup (buf);
1904                         (*marks)[n].position = pos;
1905                 }
1906           break;
1907         case minsec_show_hours:
1908                  for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1909                         sample_to_clock_parts (pos, session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1910                         if (hrs % minsec_mark_modulo == 0) {
1911                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1912                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1913                         } else {
1914                                 snprintf (buf, sizeof(buf), " ");
1915                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1916                         }
1917                         (*marks)[n].label = g_strdup (buf);
1918                         (*marks)[n].position = pos;
1919                 }
1920               break;
1921         case minsec_show_frames:
1922                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1923                         sample_to_clock_parts (pos, session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1924                         if (millisecs % minsec_mark_modulo == 0) {
1925                                 if (secs == 0) {
1926                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1927                                 } else {
1928                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1929                                 }
1930                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1931                         } else {
1932                                 snprintf (buf, sizeof(buf), " ");
1933                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1934                         }
1935                         (*marks)[n].label = g_strdup (buf);
1936                         (*marks)[n].position = pos;
1937                 }
1938           break;
1939         }
1940
1941         return minsec_nmarks;
1942 }