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 <ardour/tempo.h>
  26 #include <gtkmm2ext/gtk_ui.h>
  27
  28 #include "editor.h"
  29 #include "editing.h"
  30 #include "gtk-custom-hruler.h"
  31 #include "gui_thread.h"
  32
  33 #include "i18n.h"
  34
  35 using namespace sigc;
  36 using namespace ARDOUR;
  37 using namespace PBD;
  38 using namespace Gtk;
  39 using namespace Editing;
  40
  41 Editor *Editor::ruler_editor;
  42
  43 /* the order here must match the "metric" enums in editor.h */
  44
  45 GtkCustomMetric Editor::ruler_metrics[4] = {
  46         {1, Editor::_metric_get_smpte },
  47         {1, Editor::_metric_get_bbt },
  48         {1, Editor::_metric_get_frames },
  49         {1, Editor::_metric_get_minsec }
  50 };
  51
  52 void
  53 Editor::initialize_rulers ()
  54 {
  55         ruler_editor = this;
  56         ruler_grabbed_widget = 0;
  57
  58         _ruler_separator = new Gtk::HSeparator();
  59         _ruler_separator->set_size_request(-1, 2);
  60         _ruler_separator->set_name("TimebarPadding");
  61         _ruler_separator->show();
  62
  63         _smpte_ruler = gtk_custom_hruler_new ();
  64         smpte_ruler = Glib::wrap (_smpte_ruler);
  65         smpte_ruler->set_name ("SMPTERuler");
  66         smpte_ruler->set_size_request (-1, (int)timebar_height);
  67         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_smpte_ruler), &ruler_metrics[ruler_metric_smpte]);
  68         ruler_shown[ruler_metric_smpte] = true;
  69
  70         _bbt_ruler = gtk_custom_hruler_new ();
  71         bbt_ruler = Glib::wrap (_bbt_ruler);
  72         bbt_ruler->set_name ("BBTRuler");
  73         bbt_ruler->set_size_request (-1, (int)timebar_height);
  74         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_bbt_ruler), &ruler_metrics[ruler_metric_bbt]);
  75         ruler_shown[ruler_metric_bbt] = true;
  76
  77         _frames_ruler = gtk_custom_hruler_new ();
  78         frames_ruler = Glib::wrap (_frames_ruler);
  79         frames_ruler->set_name ("FramesRuler");
  80         frames_ruler->set_size_request (-1, (int)timebar_height);
  81         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_frames_ruler), &ruler_metrics[ruler_metric_frames]);
  82
  83         _minsec_ruler = gtk_custom_hruler_new ();
  84         minsec_ruler = Glib::wrap (_minsec_ruler);
  85         minsec_ruler->set_name ("MinSecRuler");
  86         minsec_ruler->set_size_request (-1, (int)timebar_height);
  87         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_minsec_ruler), &ruler_metrics[ruler_metric_minsec]);
  88
  89         ruler_shown[ruler_time_meter] = true;
  90         ruler_shown[ruler_time_tempo] = true;
  91         ruler_shown[ruler_time_marker] = true;
  92         ruler_shown[ruler_time_range_marker] = true;
  93         ruler_shown[ruler_time_transport_marker] = true;
  94         ruler_shown[ruler_metric_frames] = false;
  95         ruler_shown[ruler_metric_minsec] = false;
  96
  97         smpte_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
  98         bbt_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
  99         frames_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 100         minsec_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 101
 102         smpte_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 103         bbt_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 104         frames_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 105         minsec_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 106
 107         smpte_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 108         bbt_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 109         frames_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 110         minsec_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 111
 112         smpte_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 113         bbt_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 114         frames_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 115         minsec_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 116
 117         visible_timebars = 7; /* 4 here, 3 in time_canvas */
 118         ruler_pressed_button = 0;
 119 }
 120
 121
 122 gint
 123 Editor::ruler_button_press (GdkEventButton* ev)
 124 {
 125         if (session == 0) {
 126                 return FALSE;
 127         }
 128
 129         ruler_pressed_button = ev->button;
 130
 131         // jlc: grab ev->window ?
 132         //Gtk::Main::grab_add (*minsec_ruler);
 133         Widget * grab_widget = 0;
 134
 135         if (smpte_ruler->is_realized() && ev->window == smpte_ruler->get_window()->gobj()) grab_widget = smpte_ruler;
 136         else if (bbt_ruler->is_realized() && ev->window == bbt_ruler->get_window()->gobj()) grab_widget = bbt_ruler;
 137         else if (frames_ruler->is_realized() && ev->window == frames_ruler->get_window()->gobj()) grab_widget = frames_ruler;
 138         else if (minsec_ruler->is_realized() && ev->window == minsec_ruler->get_window()->gobj()) grab_widget = minsec_ruler;
 139
 140         if (grab_widget) {
 141                 grab_widget->add_modal_grab ();
 142                 ruler_grabbed_widget = grab_widget;
 143         }
 144
 145         gint x,y;
 146         Gdk::ModifierType state;
 147
 148         /* need to use the correct x,y, the event lies */
 149         time_canvas_event_box.get_window()->get_pointer (x, y, state);
 150
 151         nframes_t where = leftmost_frame + pixel_to_frame (x);
 152
 153         switch (ev->button) {
 154         case 1:
 155                 // Since we will locate the playhead on button release, cancel any running
 156                 // auditions.
 157                 if (session->is_auditioning()) {
 158                         session->cancel_audition ();
 159                 }
 160                 /* playhead cursor */
 161                 snap_to (where);
 162                 playhead_cursor->set_position (where);
 163                 _dragging_playhead = true;
 164                 break;
 165
 166         case 2:
 167                 /* edit cursor */
 168                 if (snap_type != Editing::SnapToEditCursor) {
 169                         snap_to (where);
 170                 }
 171                 edit_cursor->set_position (where);
 172                 edit_cursor_clock.set (where);
 173                 break;
 174
 175         default:
 176                 break;
 177         }
 178
 179         return TRUE;
 180 }
 181
 182 gint
 183 Editor::ruler_button_release (GdkEventButton* ev)
 184 {
 185         gint x,y;
 186         Gdk::ModifierType state;
 187
 188         /* need to use the correct x,y, the event lies */
 189         time_canvas_event_box.get_window()->get_pointer (x, y, state);
 190
 191         ruler_pressed_button = 0;
 192
 193         if (session == 0) {
 194                 return FALSE;
 195         }
 196
 197         stop_canvas_autoscroll();
 198
 199         nframes_t where = leftmost_frame + pixel_to_frame (x);
 200
 201         switch (ev->button) {
 202         case 1:
 203                 /* transport playhead */
 204                 _dragging_playhead = false;
 205                 snap_to (where);
 206                 session->request_locate (where);
 207                 break;
 208
 209         case 2:
 210                 /* edit cursor */
 211                 if (snap_type != Editing::SnapToEditCursor) {
 212                         snap_to (where);
 213                 }
 214                 edit_cursor->set_position (where);
 215                 edit_cursor_clock.set (where);
 216                 break;
 217
 218         case 3:
 219                 /* popup menu */
 220                 snap_to (where);
 221                 popup_ruler_menu (where);
 222
 223                 break;
 224         default:
 225                 break;
 226         }
 227
 228
 229         if (ruler_grabbed_widget) {
 230                 ruler_grabbed_widget->remove_modal_grab();
 231                 ruler_grabbed_widget = 0;
 232         }
 233
 234         return TRUE;
 235 }
 236
 237 gint
 238 Editor::ruler_label_button_release (GdkEventButton* ev)
 239 {
 240         if (ev->button == 3)
 241         {
 242                 popup_ruler_menu();
 243         }
 244
 245         return TRUE;
 246 }
 247
 248
 249 gint
 250 Editor::ruler_mouse_motion (GdkEventMotion* ev)
 251 {
 252         if (session == 0 || !ruler_pressed_button) {
 253                 return FALSE;
 254         }
 255
 256         double wcx=0,wcy=0;
 257         double cx=0,cy=0;
 258
 259         gint x,y;
 260         Gdk::ModifierType state;
 261
 262         /* need to use the correct x,y, the event lies */
 263         time_canvas_event_box.get_window()->get_pointer (x, y, state);
 264
 265
 266         track_canvas.c2w (x, y, wcx, wcy);
 267         track_canvas.w2c (wcx, wcy, cx, cy);
 268
 269         nframes_t where = leftmost_frame + pixel_to_frame (x);
 270
 271         /// ripped from maybe_autoscroll, and adapted to work here
 272         nframes_t rightmost_frame = leftmost_frame + current_page_frames ();
 273
 274         jack_nframes_t frame = pixel_to_frame (cx);
 275
 276         if (autoscroll_timeout_tag < 0) {
 277                 if (frame > rightmost_frame) {
 278                         if (rightmost_frame < max_frames) {
 279                                 start_canvas_autoscroll (1);
 280                         }
 281                 } else if (frame < leftmost_frame) {
 282                         if (leftmost_frame > 0) {
 283                                 start_canvas_autoscroll (-1);
 284                         }
 285                 }
 286         } else {
 287                 if (frame >= leftmost_frame && frame < rightmost_frame) {
 288                         stop_canvas_autoscroll ();
 289                 }
 290         }
 291         //////
 292
 293         snap_to (where);
 294
 295         Cursor* cursor = 0;
 296
 297         switch (ruler_pressed_button) {
 298         case 1:
 299                 /* transport playhead */
 300                 cursor = playhead_cursor;
 301                 break;
 302
 303         case 2:
 304                 /* edit cursor */
 305                 cursor = edit_cursor;
 306                 break;
 307
 308         default:
 309                 break;
 310         }
 311
 312         if (cursor) {
 313                 cursor->set_position (where);
 314
 315                 if (cursor == edit_cursor) {
 316                         edit_cursor_clock.set (where);
 317                 } else if (cursor == playhead_cursor) {
 318                         UpdateAllTransportClocks (cursor->current_frame);
 319                 }
 320         }
 321
 322         return TRUE;
 323 }
 324
 325
 326 void
 327 Editor::popup_ruler_menu (nframes_t where, ItemType t)
 328 {
 329         using namespace Menu_Helpers;
 330
 331         if (editor_ruler_menu == 0) {
 332                 editor_ruler_menu = new Menu;
 333                 editor_ruler_menu->set_name ("ArdourContextMenu");
 334         }
 335
 336         // always build from scratch
 337         MenuList& ruler_items = editor_ruler_menu->items();
 338         editor_ruler_menu->set_name ("ArdourContextMenu");
 339         ruler_items.clear();
 340
 341         CheckMenuItem * mitem;
 342
 343         no_ruler_shown_update = true;
 344
 345         switch (t) {
 346         case MarkerBarItem:
 347                 ruler_items.push_back (MenuElem (_("New location marker"), bind ( mem_fun(*this, &Editor::mouse_add_new_marker), where)));
 348                 ruler_items.push_back (MenuElem (_("Clear all locations"), mem_fun(*this, &Editor::clear_markers)));
 349                 ruler_items.push_back (MenuElem (_("Unhide locations"), mem_fun(*this, &Editor::unhide_markers)));
 350                 ruler_items.push_back (SeparatorElem ());
 351                 break;
 352         case RangeMarkerBarItem:
 353                 //ruler_items.push_back (MenuElem (_("New Range")));
 354                 ruler_items.push_back (MenuElem (_("Clear all ranges"), mem_fun(*this, &Editor::clear_ranges)));
 355                 ruler_items.push_back (MenuElem (_("Unhide ranges"), mem_fun(*this, &Editor::unhide_ranges)));
 356                 ruler_items.push_back (SeparatorElem ());
 357
 358                 break;
 359         case TransportMarkerBarItem:
 360
 361                 break;
 362
 363         case TempoBarItem:
 364                 ruler_items.push_back (MenuElem (_("New Tempo"), bind ( mem_fun(*this, &Editor::mouse_add_new_tempo_event), where)));
 365                 ruler_items.push_back (MenuElem (_("Clear tempo")));
 366                 ruler_items.push_back (SeparatorElem ());
 367                 break;
 368
 369         case MeterBarItem:
 370                 ruler_items.push_back (MenuElem (_("New Meter"), bind ( mem_fun(*this, &Editor::mouse_add_new_meter_event), where)));
 371                 ruler_items.push_back (MenuElem (_("Clear meter")));
 372                 ruler_items.push_back (SeparatorElem ());
 373                 break;
 374
 375         default:
 376                 break;
 377         }
 378
 379         ruler_items.push_back (CheckMenuElem (_("Min:Secs"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_metric_minsec)));
 380         mitem = (CheckMenuItem *) &ruler_items.back();
 381         if (ruler_shown[ruler_metric_minsec]) {
 382                 mitem->set_active(true);
 383         }
 384
 385         ruler_items.push_back (CheckMenuElem (_("Timecode"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_metric_smpte)));
 386         mitem = (CheckMenuItem *) &ruler_items.back();
 387         if (ruler_shown[ruler_metric_smpte]) {
 388                 mitem->set_active(true);
 389         }
 390
 391         ruler_items.push_back (CheckMenuElem (_("Frames"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_metric_frames)));
 392         mitem = (CheckMenuItem *) &ruler_items.back();
 393         if (ruler_shown[ruler_metric_frames]) {
 394                 mitem->set_active(true);
 395         }
 396
 397         ruler_items.push_back (CheckMenuElem (_("Bars:Beats"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_metric_bbt)));
 398         mitem = (CheckMenuItem *) &ruler_items.back();
 399         if (ruler_shown[ruler_metric_bbt]) {
 400                 mitem->set_active(true);
 401         }
 402
 403         ruler_items.push_back (SeparatorElem ());
 404
 405         ruler_items.push_back (CheckMenuElem (_("Meter"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_time_meter)));
 406         mitem = (CheckMenuItem *) &ruler_items.back();
 407         if (ruler_shown[ruler_time_meter]) {
 408                 mitem->set_active(true);
 409         }
 410
 411         ruler_items.push_back (CheckMenuElem (_("Tempo"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_time_tempo)));
 412         mitem = (CheckMenuItem *) &ruler_items.back();
 413         if (ruler_shown[ruler_time_tempo]) {
 414                 mitem->set_active(true);
 415         }
 416
 417         ruler_items.push_back (CheckMenuElem (_("Location Markers"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_time_marker)));
 418         mitem = (CheckMenuItem *) &ruler_items.back();
 419         if (ruler_shown[ruler_time_marker]) {
 420                 mitem->set_active(true);
 421         }
 422
 423         ruler_items.push_back (CheckMenuElem (_("Range Markers"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_time_range_marker)));
 424         mitem = (CheckMenuItem *) &ruler_items.back();
 425         if (ruler_shown[ruler_time_range_marker]) {
 426                 mitem->set_active(true);
 427         }
 428
 429         ruler_items.push_back (CheckMenuElem (_("Loop/Punch Ranges"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_time_transport_marker)));
 430         mitem = (CheckMenuItem *) &ruler_items.back();
 431         if (ruler_shown[ruler_time_transport_marker]) {
 432                 mitem->set_active(true);
 433         }
 434
 435         editor_ruler_menu->popup (1, gtk_get_current_event_time());
 436
 437         no_ruler_shown_update = false;
 438 }
 439
 440 void
 441 Editor::ruler_toggled (int ruler)
 442 {
 443         if (!session) return;
 444         if (ruler < 0 || ruler >= (int) sizeof(ruler_shown)) return;
 445
 446         if (no_ruler_shown_update) return;
 447
 448         if (ruler_shown[ruler]) {
 449                 if (visible_timebars <= 1) {
 450                         // must always have 1 visible
 451                         return;
 452                 }
 453         }
 454
 455         ruler_shown[ruler] = !ruler_shown[ruler];
 456
 457         update_ruler_visibility ();
 458
 459         // update session extra RulerVisibility
 460         store_ruler_visibility ();
 461 }
 462
 463 void
 464 Editor::store_ruler_visibility ()
 465 {
 466         XMLNode* node = new XMLNode(X_("RulerVisibility"));
 467
 468         node->add_property (X_("smpte"), ruler_shown[ruler_metric_smpte] ? "yes": "no");
 469         node->add_property (X_("bbt"), ruler_shown[ruler_metric_bbt] ? "yes": "no");
 470         node->add_property (X_("frames"), ruler_shown[ruler_metric_frames] ? "yes": "no");
 471         node->add_property (X_("minsec"), ruler_shown[ruler_metric_minsec] ? "yes": "no");
 472         node->add_property (X_("tempo"), ruler_shown[ruler_time_tempo] ? "yes": "no");
 473         node->add_property (X_("meter"), ruler_shown[ruler_time_meter] ? "yes": "no");
 474         node->add_property (X_("marker"), ruler_shown[ruler_time_marker] ? "yes": "no");
 475         node->add_property (X_("rangemarker"), ruler_shown[ruler_time_range_marker] ? "yes": "no");
 476         node->add_property (X_("transportmarker"), ruler_shown[ruler_time_transport_marker] ? "yes": "no");
 477
 478         session->add_extra_xml (*node);
 479         session->set_dirty ();
 480 }
 481
 482 void
 483 Editor::restore_ruler_visibility ()
 484 {
 485         XMLProperty* prop;
 486         XMLNode * node = session->extra_xml (X_("RulerVisibility"));
 487
 488         if (node) {
 489                 if ((prop = node->property ("smpte")) != 0) {
 490                         if (prop->value() == "yes")
 491                                 ruler_shown[ruler_metric_smpte] = true;
 492                         else
 493                                 ruler_shown[ruler_metric_smpte] = false;
 494                 }
 495                 if ((prop = node->property ("bbt")) != 0) {
 496                         if (prop->value() == "yes")
 497                                 ruler_shown[ruler_metric_bbt] = true;
 498                         else
 499                                 ruler_shown[ruler_metric_bbt] = false;
 500                 }
 501                 if ((prop = node->property ("frames")) != 0) {
 502                         if (prop->value() == "yes")
 503                                 ruler_shown[ruler_metric_frames] = true;
 504                         else
 505                                 ruler_shown[ruler_metric_frames] = false;
 506                 }
 507                 if ((prop = node->property ("minsec")) != 0) {
 508                         if (prop->value() == "yes")
 509                                 ruler_shown[ruler_metric_minsec] = true;
 510                         else
 511                                 ruler_shown[ruler_metric_minsec] = false;
 512                 }
 513                 if ((prop = node->property ("tempo")) != 0) {
 514                         if (prop->value() == "yes")
 515                                 ruler_shown[ruler_time_tempo] = true;
 516                         else
 517                                 ruler_shown[ruler_time_tempo] = false;
 518                 }
 519                 if ((prop = node->property ("meter")) != 0) {
 520                         if (prop->value() == "yes")
 521                                 ruler_shown[ruler_time_meter] = true;
 522                         else
 523                                 ruler_shown[ruler_time_meter] = false;
 524                 }
 525                 if ((prop = node->property ("marker")) != 0) {
 526                         if (prop->value() == "yes")
 527                                 ruler_shown[ruler_time_marker] = true;
 528                         else
 529                                 ruler_shown[ruler_time_marker] = false;
 530                 }
 531                 if ((prop = node->property ("rangemarker")) != 0) {
 532                         if (prop->value() == "yes")
 533                                 ruler_shown[ruler_time_range_marker] = true;
 534                         else
 535                                 ruler_shown[ruler_time_range_marker] = false;
 536                 }
 537                 if ((prop = node->property ("transportmarker")) != 0) {
 538                         if (prop->value() == "yes")
 539                                 ruler_shown[ruler_time_transport_marker] = true;
 540                         else
 541                                 ruler_shown[ruler_time_transport_marker] = false;
 542                 }
 543
 544         }
 545
 546         update_ruler_visibility ();
 547 }
 548
 549
 550 void
 551 Editor::update_ruler_visibility ()
 552 {
 553         using namespace Box_Helpers;
 554         BoxList & lab_children =  time_button_vbox.children();
 555         BoxList & ruler_children =  time_canvas_vbox.children();
 556
 557         visible_timebars = 0;
 558
 559         lab_children.clear();
 560
 561         // leave the last one (the time_canvas) intact
 562         while (ruler_children.size() > 1) {
 563                 ruler_children.pop_front();
 564         }
 565
 566         BoxList::iterator canvaspos = ruler_children.begin();
 567
 568         _smpte_ruler = gtk_custom_hruler_new ();
 569         smpte_ruler = Glib::wrap (_smpte_ruler);
 570         smpte_ruler->set_name ("SMPTERuler");
 571         smpte_ruler->set_size_request (-1, (int)timebar_height);
 572         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_smpte_ruler), &ruler_metrics[ruler_metric_smpte]);
 573
 574         _bbt_ruler = gtk_custom_hruler_new ();
 575         bbt_ruler = Glib::wrap (_bbt_ruler);
 576         bbt_ruler->set_name ("BBTRuler");
 577         bbt_ruler->set_size_request (-1, (int)timebar_height);
 578         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_bbt_ruler), &ruler_metrics[ruler_metric_bbt]);
 579
 580         _frames_ruler = gtk_custom_hruler_new ();
 581         frames_ruler = Glib::wrap (_frames_ruler);
 582         frames_ruler->set_name ("FramesRuler");
 583         frames_ruler->set_size_request (-1, (int)timebar_height);
 584         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_frames_ruler), &ruler_metrics[ruler_metric_frames]);
 585
 586         _minsec_ruler = gtk_custom_hruler_new ();
 587         minsec_ruler = Glib::wrap (_minsec_ruler);
 588         minsec_ruler->set_name ("MinSecRuler");
 589         minsec_ruler->set_size_request (-1, (int)timebar_height);
 590         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_minsec_ruler), &ruler_metrics[ruler_metric_minsec]);
 591
 592
 593         smpte_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 594         bbt_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 595         frames_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 596         minsec_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 597
 598         smpte_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 599         bbt_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 600         frames_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 601         minsec_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 602
 603         smpte_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 604         bbt_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 605         frames_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 606         minsec_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 607
 608         smpte_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 609         bbt_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 610         frames_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 611         minsec_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 612
 613         ruler_children.insert (canvaspos, Element(*_ruler_separator, PACK_SHRINK, PACK_START));
 614
 615         if (ruler_shown[ruler_metric_minsec]) {
 616                 lab_children.push_back (Element(minsec_label, PACK_SHRINK, PACK_START));
 617                 ruler_children.insert (canvaspos, Element(*minsec_ruler, PACK_SHRINK, PACK_START));
 618                 visible_timebars++;
 619         }
 620
 621         if (ruler_shown[ruler_metric_smpte]) {
 622                 lab_children.push_back (Element(smpte_label, PACK_SHRINK, PACK_START));
 623                 ruler_children.insert (canvaspos, Element(*smpte_ruler, PACK_SHRINK, PACK_START));
 624                 visible_timebars++;
 625         }
 626
 627         if (ruler_shown[ruler_metric_frames]) {
 628                 lab_children.push_back (Element(frame_label, PACK_SHRINK, PACK_START));
 629                 ruler_children.insert (canvaspos, Element(*frames_ruler, PACK_SHRINK, PACK_START));
 630                 visible_timebars++;
 631         }
 632
 633         if (ruler_shown[ruler_metric_bbt]) {
 634                 lab_children.push_back (Element(bbt_label, PACK_SHRINK, PACK_START));
 635                 ruler_children.insert (canvaspos, Element(*bbt_ruler, PACK_SHRINK, PACK_START));
 636                 visible_timebars++;
 637         }
 638
 639         double tbpos = 1.0;
 640         double old_unit_pos ;
 641
 642         if (ruler_shown[ruler_time_meter]) {
 643                 lab_children.push_back (Element(meter_label, PACK_SHRINK, PACK_START));
 644
 645                 old_unit_pos = meter_group->property_y();
 646                 if (tbpos != old_unit_pos) {
 647                         meter_group->move ( 0.0, tbpos - old_unit_pos);
 648                 }
 649                 meter_group->show();
 650                 tbpos += timebar_height;
 651                 visible_timebars++;
 652         }
 653         else {
 654                 meter_group->hide();
 655         }
 656
 657         if (ruler_shown[ruler_time_tempo]) {
 658                 lab_children.push_back (Element(tempo_label, PACK_SHRINK, PACK_START));
 659                 old_unit_pos = tempo_group->property_y();
 660                 if (tbpos != old_unit_pos) {
 661                         tempo_group->move(0.0, tbpos - old_unit_pos);
 662                 }
 663                 tempo_group->show();
 664                 tbpos += timebar_height;
 665                 visible_timebars++;
 666         }
 667         else {
 668                 tempo_group->hide();
 669         }
 670
 671         if (ruler_shown[ruler_time_marker]) {
 672                 lab_children.push_back (Element(mark_label, PACK_SHRINK, PACK_START));
 673                 old_unit_pos = marker_group->property_y();
 674                 if (tbpos != old_unit_pos) {
 675                         marker_group->move ( 0.0, tbpos - old_unit_pos);
 676                 }
 677                 marker_group->show();
 678                 tbpos += timebar_height;
 679                 visible_timebars++;
 680         }
 681         else {
 682                 marker_group->hide();
 683         }
 684
 685         if (ruler_shown[ruler_time_range_marker]) {
 686                 lab_children.push_back (Element(range_mark_label, PACK_SHRINK, PACK_START));
 687                 old_unit_pos = range_marker_group->property_y();
 688                 if (tbpos != old_unit_pos) {
 689                         range_marker_group->move (0.0, tbpos - old_unit_pos);
 690                 }
 691                 range_marker_group->show();
 692                 tbpos += timebar_height;
 693                 visible_timebars++;
 694         }
 695         else {
 696                 range_marker_group->hide();
 697         }
 698
 699         if (ruler_shown[ruler_time_transport_marker]) {
 700                 lab_children.push_back (Element(transport_mark_label, PACK_SHRINK, PACK_START));
 701                 old_unit_pos = transport_marker_group->property_y();
 702                 if (tbpos != old_unit_pos) {
 703                         transport_marker_group->move ( 0.0, tbpos - old_unit_pos);
 704                 }
 705                 transport_marker_group->show();
 706                 tbpos += timebar_height;
 707                 visible_timebars++;
 708         }
 709         else {
 710                 transport_marker_group->hide();
 711         }
 712
 713         time_canvas_vbox.set_size_request (-1, (int)(timebar_height * visible_timebars));
 714         time_canvas_event_box.queue_resize();
 715
 716         update_fixed_rulers();
 717         //update_tempo_based_rulers();
 718         redisplay_tempo (false);
 719
 720         time_canvas_event_box.show_all();
 721         time_button_frame.show_all();
 722 }
 723
 724 void
 725 Editor::update_just_smpte ()
 726 {
 727         ENSURE_GUI_THREAD(mem_fun(*this, &Editor::update_just_smpte));
 728
 729         if (session == 0) {
 730                 return;
 731         }
 732
 733         nframes_t rightmost_frame = leftmost_frame + current_page_frames();
 734
 735         if (ruler_shown[ruler_metric_smpte]) {
 736                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_smpte_ruler), leftmost_frame, rightmost_frame,
 737                                             leftmost_frame, session->current_end_frame());
 738         }
 739 }
 740
 741 void
 742 Editor::update_fixed_rulers ()
 743 {
 744         nframes_t rightmost_frame;
 745
 746         if (session == 0) {
 747                 return;
 748         }
 749
 750         ruler_metrics[ruler_metric_smpte].units_per_pixel = frames_per_unit;
 751         ruler_metrics[ruler_metric_frames].units_per_pixel = frames_per_unit;
 752         ruler_metrics[ruler_metric_minsec].units_per_pixel = frames_per_unit;
 753
 754         rightmost_frame = leftmost_frame + current_page_frames ();
 755
 756         /* these force a redraw, which in turn will force execution of the metric callbacks
 757            to compute the relevant ticks to display.
 758         */
 759
 760         if (ruler_shown[ruler_metric_smpte]) {
 761                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_smpte_ruler), leftmost_frame, rightmost_frame,
 762                                             leftmost_frame, session->current_end_frame());
 763         }
 764
 765         if (ruler_shown[ruler_metric_frames]) {
 766                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_frames_ruler), leftmost_frame, rightmost_frame,
 767                                             leftmost_frame, session->current_end_frame());
 768         }
 769
 770         if (ruler_shown[ruler_metric_minsec]) {
 771                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_minsec_ruler), leftmost_frame, rightmost_frame,
 772                                             leftmost_frame, session->current_end_frame());
 773         }
 774 }
 775
 776 void
 777 Editor::update_tempo_based_rulers ()
 778 {
 779         if (session == 0) {
 780                 return;
 781         }
 782
 783         ruler_metrics[ruler_metric_bbt].units_per_pixel = frames_per_unit;
 784
 785         if (ruler_shown[ruler_metric_bbt]) {
 786                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_bbt_ruler), leftmost_frame, leftmost_frame+current_page_frames(),
 787                                             leftmost_frame, session->current_end_frame());
 788         }
 789 }
 790
 791 /* Mark generation */
 792
 793 gint
 794 Editor::_metric_get_smpte (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 795 {
 796         return ruler_editor->metric_get_smpte (marks, lower, upper, maxchars);
 797 }
 798
 799 gint
 800 Editor::_metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 801 {
 802         return ruler_editor->metric_get_bbt (marks, lower, upper, maxchars);
 803 }
 804
 805 gint
 806 Editor::_metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 807 {
 808         return ruler_editor->metric_get_frames (marks, lower, upper, maxchars);
 809 }
 810
 811 gint
 812 Editor::_metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 813 {
 814         return ruler_editor->metric_get_minsec (marks, lower, upper, maxchars);
 815 }
 816
 817 gint
 818 Editor::metric_get_smpte (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 819 {
 820         nframes_t range;
 821         nframes_t pos;
 822         nframes_t spacer;
 823         nframes_t fr;
 824         SMPTE::Time smpte;
 825         gchar buf[16];
 826         gint nmarks = 0;
 827         gint n;
 828         bool show_bits = false;
 829         bool show_frames = false;
 830         bool show_seconds = false;
 831         bool show_minutes = false;
 832         bool show_hours = false;
 833         int mark_modulo;
 834
 835         if (session == 0) {
 836                 return 0;
 837         }
 838
 839         fr = session->frame_rate();
 840
 841         if (lower > (spacer = (nframes_t)(128 * Editor::get_current_zoom ()))) {
 842                 lower = lower - spacer;
 843         } else {
 844                 lower = 0;
 845         }
 846         upper = upper + spacer;
 847         range = (nframes_t) floor (upper - lower);
 848
 849         if (range < (2 * session->frames_per_smpte_frame())) { /* 0 - 2 frames */
 850                 show_bits = true;
 851                 mark_modulo = 20;
 852                 nmarks = 1 + (2 * Config->get_subframes_per_frame());
 853         } else if (range <= (fr / 4)) { /* 2 frames - 0.250 second */
 854                 show_frames = true;
 855                 mark_modulo = 1;
 856                 nmarks = 1 + (range / (nframes_t)session->frames_per_smpte_frame());
 857         } else if (range <= (fr / 2)) { /* 0.25-0.5 second */
 858                 show_frames = true;
 859                 mark_modulo = 2;
 860                 nmarks = 1 + (range / (nframes_t)session->frames_per_smpte_frame());
 861         } else if (range <= fr) { /* 0.5-1 second */
 862                 show_frames = true;
 863                 mark_modulo = 5;
 864                 nmarks = 1 + (range / (nframes_t)session->frames_per_smpte_frame());
 865         } else if (range <= 2 * fr) { /* 1-2 seconds */
 866                 show_frames = true;
 867                 mark_modulo = 10;
 868                 nmarks = 1 + (range / (nframes_t)session->frames_per_smpte_frame());
 869         } else if (range <= 8 * fr) { /* 2-8 seconds */
 870                 show_seconds = true;
 871                 mark_modulo = 1;
 872                 nmarks = 1 + (range / fr);
 873         } else if (range <= 16 * fr) { /* 8-16 seconds */
 874                 show_seconds = true;
 875                 mark_modulo = 2;
 876                 nmarks = 1 + (range / fr);
 877         } else if (range <= 30 * fr) { /* 16-30 seconds */
 878                 show_seconds = true;
 879                 mark_modulo = 5;
 880                 nmarks = 1 + (range / fr);
 881         } else if (range <= 60 * fr) { /* 30-60 seconds */
 882                 show_seconds = true;
 883                 mark_modulo = 5;
 884                 nmarks = 1 + (range / fr);
 885         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
 886                 show_seconds = true;
 887                 mark_modulo = 20;
 888                 nmarks = 1 + (range / fr);
 889         } else if (range <= 4 * 60 * fr) { /* 2-4 minutes */
 890                 show_seconds = true;
 891                 mark_modulo = 30;
 892                 nmarks = 1 + (range / fr);
 893         } else if (range <= 10 * 60 * fr) { /* 4-10 minutes */
 894                 show_minutes = true;
 895                 mark_modulo = 2;
 896                 nmarks = 1 + 10;
 897         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
 898                 show_minutes = true;
 899                 mark_modulo = 5;
 900                 nmarks = 1 + 30;
 901         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
 902                 show_minutes = true;
 903                 mark_modulo = 10;
 904                 nmarks = 1 + 60;
 905         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
 906                 show_minutes = true;
 907                 mark_modulo = 30;
 908                 nmarks = 1 + (60 * 4);
 909         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
 910                 show_hours = true;
 911                 mark_modulo = 1;
 912                 nmarks = 1 + 8;
 913         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
 914                 show_hours = true;
 915                 mark_modulo = 1;
 916                 nmarks = 1 + 24;
 917         } else {
 918
 919                 /* not possible if nframes_t is a 32 bit quantity */
 920
 921                 show_hours = true;
 922                 mark_modulo = 4;
 923                 nmarks = 1 + 24;
 924         }
 925
 926         pos = (nframes_t) floor (lower);
 927
 928         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
 929
 930         if (show_bits) {
 931                 // Find smpte time of this sample (pos) with subframe accuracy
 932                 session->sample_to_smpte(pos, smpte, true /* use_offset */, true /* use_subframes */ );
 933
 934                 for (n = 0; n < nmarks; n++) {
 935                         session->smpte_to_sample(smpte, pos, true /* use_offset */, true /* use_subframes */ );
 936                         if ((smpte.subframes % mark_modulo) == 0) {
 937                                 if (smpte.subframes == 0) {
 938                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
 939                                         snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
 940                                 } else {
 941                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
 942                                         snprintf (buf, sizeof(buf), ".%02u", smpte.subframes);
 943                                 }
 944                         } else {
 945                                 snprintf (buf, sizeof(buf)," ");
 946                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
 947
 948                         }
 949                         (*marks)[n].label = g_strdup (buf);
 950                         (*marks)[n].position = pos;
 951
 952                         // Increment subframes by one
 953                         SMPTE::increment_subframes( smpte );
 954                 }
 955         } else if (show_seconds) {
 956                 // Find smpte time of this sample (pos)
 957                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
 958                 // Go to next whole second down
 959                 SMPTE::seconds_floor( smpte );
 960
 961                 for (n = 0; n < nmarks; n++) {
 962                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
 963                         if ((smpte.seconds % mark_modulo) == 0) {
 964                                 if (smpte.seconds == 0) {
 965                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
 966                                         (*marks)[n].position = pos;
 967                                 } else {
 968                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
 969                                         (*marks)[n].position = pos;
 970                                 }
 971                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
 972                         } else {
 973                                 snprintf (buf, sizeof(buf)," ");
 974                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
 975                                 (*marks)[n].position = pos;
 976
 977                         }
 978                         (*marks)[n].label = g_strdup (buf);
 979                         SMPTE::increment_seconds( smpte );
 980                 }
 981         } else if (show_minutes) {
 982                 // Find smpte time of this sample (pos)
 983                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
 984                 // Go to next whole minute down
 985                 SMPTE::minutes_floor( smpte );
 986
 987                 for (n = 0; n < nmarks; n++) {
 988                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
 989                         if ((smpte.minutes % mark_modulo) == 0) {
 990                                 if (smpte.minutes == 0) {
 991                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
 992                                 } else {
 993                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
 994                                 }
 995                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
 996                         } else {
 997                                 snprintf (buf, sizeof(buf)," ");
 998                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
 999
1000                         }
1001                         (*marks)[n].label = g_strdup (buf);
1002                         (*marks)[n].position = pos;
1003                         SMPTE::increment_minutes( smpte );
1004                 }
1005         } else if (show_hours) {
1006                 // Find smpte time of this sample (pos)
1007                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
1008                 // Go to next whole hour down
1009                 SMPTE::hours_floor( smpte );
1010
1011                 for (n = 0; n < nmarks; n++) {
1012                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
1013                         if ((smpte.hours % mark_modulo) == 0) {
1014                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1015                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
1016                         } else {
1017                                 snprintf (buf, sizeof(buf)," ");
1018                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1019
1020                         }
1021                         (*marks)[n].label = g_strdup (buf);
1022                         (*marks)[n].position = pos;
1023
1024                         SMPTE::increment_hours( smpte );
1025                 }
1026         } else { // show_frames
1027                 // Find smpte time of this sample (pos)
1028                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
1029                 // Go to next whole frame down
1030                 SMPTE::frames_floor( smpte );
1031
1032                 for (n = 0; n < nmarks; n++) {
1033                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
1034                         if ((smpte.frames % mark_modulo) == 0)  {
1035                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1036                                 (*marks)[n].position = pos;
1037                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
1038                         } else {
1039                                 snprintf (buf, sizeof(buf)," ");
1040                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1041                                 (*marks)[n].position = pos;
1042
1043                         }
1044                         (*marks)[n].label = g_strdup (buf);
1045                         SMPTE::increment( smpte );
1046                 }
1047         }
1048
1049         return nmarks;
1050 }
1051
1052
1053 gint
1054 Editor::metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
1055 {
1056         if (session == 0) {
1057                 return 0;
1058         }
1059
1060         TempoMap::BBTPointList::iterator i;
1061
1062         uint32_t beats = 0;
1063         uint32_t bars = 0;
1064         uint32_t desirable_marks;
1065         uint32_t magic_accent_number = 1;
1066         gint nmarks;
1067         char buf[64];
1068         gint  n = 0;
1069         nframes_t pos;
1070         bool bar_helper_on = true;
1071
1072         BBT_Time next_beat;
1073         nframes_t next_beat_pos;
1074
1075         if ((desirable_marks = maxchars / 7) == 0) {
1076                return 0;
1077         }
1078
1079         /* align the tick marks to whatever we're snapping to... */
1080
1081         switch (snap_type) {
1082         case SnapToAThirdBeat:
1083                 bbt_beat_subdivision = 3;
1084                 break;
1085         case SnapToAQuarterBeat:
1086                 bbt_beat_subdivision = 4;
1087                 break;
1088         case SnapToAEighthBeat:
1089                 bbt_beat_subdivision = 8;
1090                 magic_accent_number = 2;
1091                 break;
1092         case SnapToASixteenthBeat:
1093                 bbt_beat_subdivision = 16;
1094                 magic_accent_number = 4;
1095                 break;
1096         case SnapToAThirtysecondBeat:
1097                 bbt_beat_subdivision = 32;
1098                 magic_accent_number = 8;
1099                 break;
1100         default:
1101                bbt_beat_subdivision = 4;
1102                 break;
1103         }
1104
1105         if (current_bbt_points == 0 || current_bbt_points->empty()) {
1106                 return 0;
1107         }
1108
1109         i = current_bbt_points->end();
1110         i--;
1111         bars = (*i).bar - (*current_bbt_points->begin()).bar;
1112         beats = current_bbt_points->size() - bars;
1113
1114         /*Only show the bar helper if there aren't many bars on the screen */
1115         if (bars > 1) {
1116                 bar_helper_on = false;
1117         }
1118
1119         if (desirable_marks > (beats / 4)) {
1120
1121                 /* we're in beat land...*/
1122
1123                 uint32_t tick = 0;
1124                 uint32_t skip;
1125                 uint32_t t;
1126                 nframes_t frame_skip;
1127                 double frame_skip_error;
1128                 double accumulated_error;
1129                 double position_of_helper;
1130                 bool i_am_accented = false;
1131                 bool we_need_ticks = false;
1132                 bool helper_active = false;
1133
1134                 position_of_helper = lower + (30 * Editor::get_current_zoom ());
1135
1136                 if (desirable_marks >= (beats)) {
1137                         nmarks = (beats * bbt_beat_subdivision) + 1;
1138                         we_need_ticks = true;
1139                 } else {
1140                         nmarks = beats + 1;
1141                 }
1142
1143                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1144
1145                 (*marks)[0].label = g_strdup(" ");
1146                 (*marks)[0].position = lower;
1147                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1148
1149                 for (n = 1,   i = current_bbt_points->begin(); n < nmarks && i != current_bbt_points->end(); ++i) {
1150
1151                         if ((*i).frame < lower && (bar_helper_on)) {
1152                                         snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1153                                         (*marks)[0].label = g_strdup (buf);
1154                                         helper_active = true;
1155                         } else {
1156
1157                           if ((*i).type == TempoMap::Bar)  {
1158                             if (((*i).frame < position_of_helper) && helper_active) {
1159                               snprintf (buf, sizeof(buf), " ");
1160                             } else {
1161                               snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1162                             }
1163                             (*marks)[n].label = g_strdup (buf);
1164                             (*marks)[n].position = (*i).frame;
1165                             (*marks)[n].style = GtkCustomRulerMarkMajor;
1166                             n++;
1167
1168                           } else if (((*i).type == TempoMap::Beat) && ((*i).beat > 1)) {
1169                             ((((*i).frame < position_of_helper) && bar_helper_on) || !we_need_ticks) ?
1170                               snprintf (buf, sizeof(buf), " ") : snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1171                             if (((*i).beat % 2 == 1) || we_need_ticks) {
1172                               (*marks)[n].style = GtkCustomRulerMarkMinor;
1173                             } else {
1174                               (*marks)[n].style = GtkCustomRulerMarkMicro;
1175                             }
1176                             (*marks)[n].label =  g_strdup (buf);
1177                             (*marks)[n].position = (*i).frame;
1178                             n++;
1179                           }
1180
1181                         }
1182
1183
1184                         /* Add the tick marks */
1185
1186                         if (we_need_ticks && (*i).type == TempoMap::Beat) {
1187
1188                                 /* Find the next beat */
1189
1190                                 next_beat.beats = (*i).beat;
1191                                 next_beat.bars = (*i).bar;
1192
1193                                 if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1194                                   next_beat.beats += 1;
1195                                 } else {
1196                                   next_beat.bars += 1;
1197                                   next_beat.beats = 1;
1198                                 }
1199
1200                                 next_beat_pos = session->tempo_map().frame_time(next_beat);
1201
1202                                 frame_skip = (nframes_t) floor (frame_skip_error = (session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1203                                 frame_skip_error -= frame_skip;
1204                                 skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);
1205
1206                                 pos = (*i).frame + frame_skip;
1207                                 accumulated_error = frame_skip_error;
1208
1209                                 tick = skip;
1210
1211                                 for (t = 0; (tick < Meter::ticks_per_beat) && (n < nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1212
1213                                         if (t % magic_accent_number == (magic_accent_number - 1)) {
1214                                                 i_am_accented = true;
1215                                         }
1216                                         if (Editor::get_current_zoom () > 32) {
1217                                                 snprintf (buf, sizeof(buf), " ");
1218                                         } else if ((Editor::get_current_zoom () > 8) && !i_am_accented) {
1219                                                 snprintf (buf, sizeof(buf), " ");
1220                                         } else  if (bar_helper_on && (pos < position_of_helper)) {
1221                                                 snprintf (buf, sizeof(buf), " ");
1222                                         } else {
1223                                                 snprintf (buf, sizeof(buf), "%" PRIu32, tick);
1224                                         }
1225
1226                                         (*marks)[n].label = g_strdup (buf);
1227
1228                                         /* Error compensation for float to nframes_t*/
1229                                         accumulated_error += frame_skip_error;
1230                                         if (accumulated_error > 1) {
1231                                                 pos += 1;
1232                                                 accumulated_error -= 1.0f;
1233                                         }
1234
1235                                         (*marks)[n].position = pos;
1236
1237                                         if ((bbt_beat_subdivision > 4) && i_am_accented) {
1238                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1239                                         } else {
1240                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1241                                         }
1242                                         i_am_accented = false;
1243                                         n++;
1244
1245                                 }
1246                         }
1247                 }
1248                 return n; //return the actual number of marks made, since we might have skipped some fro fractional time signatures
1249
1250        } else {
1251
1252                 /* we're in bar land */
1253
1254                 if (desirable_marks < (bars / 256)) {
1255                         nmarks = 1;
1256                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1257                         snprintf (buf, sizeof(buf), "too many bars... (currently %" PRIu32 ")", bars );
1258                         (*marks)[0].style = GtkCustomRulerMarkMajor;
1259                         (*marks)[0].label = g_strdup (buf);
1260                         (*marks)[0].position = lower;
1261                 } else if (desirable_marks < (uint32_t)(nmarks = (gint) (bars / 64) + 1)) {
1262                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1263                         for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < nmarks; i++) {
1264                                 if ((*i).type == TempoMap::Bar)  {
1265                                         if ((*i).bar % 64 == 1) {
1266                                                 if ((*i).bar % 256 == 1) {
1267                                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1268                                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1269                                                 } else {
1270                                                         snprintf (buf, sizeof(buf), " ");
1271                                                         if ((*i).bar % 256 == 129)  {
1272                                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1273                                                         } else {
1274                                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1275                                                         }
1276                                                 }
1277                                                 (*marks)[n].label = g_strdup (buf);
1278                                                 (*marks)[n].position = (*i).frame;
1279                                                 n++;
1280                                         }
1281                                 }
1282                         }
1283                 } else if (desirable_marks < (uint32_t)(nmarks = (bars / 16) + 1)) {
1284                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1285                         for (n = 0,  i = current_bbt_points->begin(); i != current_bbt_points->end() && n < nmarks; i++) {
1286                                 if ((*i).type == TempoMap::Bar)  {
1287                                         if ((*i).bar % 16 == 1) {
1288                                                 if ((*i).bar % 64 == 1) {
1289                                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1290                                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1291                                                 } else {
1292                                                         snprintf (buf, sizeof(buf), " ");
1293                                                         if ((*i).bar % 64 == 33)  {
1294                                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1295                                                         } else {
1296                                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1297                                                         }
1298                                                 }
1299                                                 (*marks)[n].label = g_strdup (buf);
1300                                                 (*marks)[n].position = (*i).frame;
1301                                                 n++;
1302                                         }
1303                                 }
1304                         }
1305                 } else if (desirable_marks < (uint32_t)(nmarks = (bars / 4) + 1)){
1306                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1307                         for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < nmarks; ++i) {
1308                                 if ((*i).type == TempoMap::Bar)  {
1309                                         if ((*i).bar % 4 == 1) {
1310                                                 if ((*i).bar % 16 == 1) {
1311                                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1312                                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1313                                                 } else {
1314                                                         snprintf (buf, sizeof(buf), " ");
1315                                                         if ((*i).bar % 16 == 9)  {
1316                                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1317                                                         } else {
1318                                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1319                                                         }
1320                                                 }
1321                                                 (*marks)[n].label = g_strdup (buf);
1322                                                 (*marks)[n].position = (*i).frame;
1323                                                 n++;
1324                                         }
1325                                 }
1326                         }
1327                 } else {
1328                         nmarks = bars + 1;
1329                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks );
1330                         for (n = 0,  i = current_bbt_points->begin(); i != current_bbt_points->end() && n < nmarks; i++) {
1331                                 if ((*i).type == TempoMap::Bar)  {
1332                                         if ((*i).bar % 4 == 1) {
1333                                                 snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1334                                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1335                                         } else {
1336                                                 snprintf (buf, sizeof(buf), " ");
1337                                                 if ((*i).bar % 4 == 3)  {
1338                                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1339                                                 } else {
1340                                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1341                                                 }
1342                                         }
1343                                         (*marks)[n].label = g_strdup (buf);
1344                                         (*marks)[n].position = (*i).frame;
1345                                         n++;
1346                                 }
1347                         }
1348                 }
1349                 return n;
1350         }
1351 }
1352
1353 gint
1354 Editor::metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
1355 {
1356         nframes_t mark_interval;
1357         nframes_t pos;
1358         nframes_t ilower = (nframes_t) floor (lower);
1359         nframes_t iupper = (nframes_t) floor (upper);
1360         gchar buf[16];
1361         gint nmarks;
1362         gint n;
1363
1364         if (session == 0) {
1365                 return 0;
1366         }
1367
1368         mark_interval = (iupper - ilower) / 5;
1369         if (mark_interval > session->frame_rate()) {
1370                 mark_interval -= mark_interval % session->frame_rate();
1371         } else {
1372                 mark_interval = session->frame_rate() / (session->frame_rate() / mark_interval ) ;
1373         }
1374         nmarks = 5;
1375         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1376         for (n = 0, pos = ilower; n < nmarks; pos += mark_interval, ++n) {
1377                 snprintf (buf, sizeof(buf), "%u", pos);
1378                 (*marks)[n].label = g_strdup (buf);
1379                 (*marks)[n].position = pos;
1380                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1381         }
1382
1383         return nmarks;
1384 }
1385
1386 static void
1387 sample_to_clock_parts ( nframes_t sample,
1388                         nframes_t sample_rate,
1389                         long *hrs_p,
1390                         long *mins_p,
1391                         long *secs_p,
1392                         long *millisecs_p)
1393
1394 {
1395         nframes_t left;
1396         long hrs;
1397         long mins;
1398         long secs;
1399         long millisecs;
1400
1401         left = sample;
1402         hrs = left / (sample_rate * 60 * 60);
1403         left -= hrs * sample_rate * 60 * 60;
1404         mins = left / (sample_rate * 60);
1405         left -= mins * sample_rate * 60;
1406         secs = left / sample_rate;
1407         left -= secs * sample_rate;
1408         millisecs = left * 1000 / sample_rate;
1409
1410         *millisecs_p = millisecs;
1411         *secs_p = secs;
1412         *mins_p = mins;
1413         *hrs_p = hrs;
1414
1415         return;
1416 }
1417
1418 gint
1419 Editor::metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
1420 {
1421         nframes_t range;
1422         nframes_t fr;
1423         nframes_t mark_interval;
1424         nframes_t pos;
1425         nframes_t spacer;
1426         long hrs, mins, secs, millisecs;
1427         gchar buf[16];
1428         gint nmarks;
1429         gint n;
1430         gint mark_modulo = 100;
1431         bool show_seconds = false;
1432         bool show_minutes = false;
1433         bool show_hours = false;
1434         nframes_t ilower = (nframes_t) floor (lower);
1435         nframes_t iupper = (nframes_t) floor (upper);
1436
1437         if (session == 0) {
1438                 return 0;
1439         }
1440
1441         fr = session->frame_rate();
1442
1443         /* to prevent 'flashing' */
1444         if (lower > (spacer = (nframes_t)(128 * Editor::get_current_zoom ()))) {
1445                 lower = lower - spacer;
1446         } else {
1447                 lower = 0;
1448         }
1449         upper = upper + spacer;
1450         range = iupper - ilower;
1451
1452         if (range <  (fr / 50)) {
1453                 mark_interval =  fr / 100; /* show 1/100 seconds */
1454                 mark_modulo = 10;
1455         } else if (range <= (fr / 10)) { /* 0-0.1 second */
1456                 mark_interval = fr / 50; /* show 1/50 seconds */
1457                 mark_modulo = 20;
1458         } else if (range <= (fr / 2)) { /* 0-0.5 second */
1459                 mark_interval = fr / 20;  /* show 1/20 seconds */
1460                 mark_modulo = 100;
1461         } else if (range <= fr) { /* 0-1 second */
1462                 mark_interval = fr / 10;  /* show 1/10 seconds */
1463                 mark_modulo = 200;
1464         } else if (range <= 2 * fr) { /* 1-2 seconds */
1465                 mark_interval = fr / 2; /* show 1/2 seconds */
1466                 mark_modulo = 500;
1467         } else if (range <= 8 * fr) { /* 2-5 seconds */
1468                 mark_interval =  fr / 5; /* show 2 seconds */
1469                 mark_modulo = 1000;
1470         } else if (range <= 16 * fr) { /* 8-16 seconds */
1471                 mark_interval =  fr; /* show 1 seconds */
1472                 show_seconds = true;
1473                 mark_modulo = 5;
1474         } else if (range <= 30 * fr) { /* 10-30 seconds */
1475                 mark_interval =  fr; /* show 10 seconds */
1476                 show_seconds = true;
1477                 mark_modulo = 5;
1478         } else if (range <= 60 * fr) { /* 30-60 seconds */
1479                 mark_interval = 5 * fr; /* show 5 seconds */
1480                 show_seconds = true;
1481                 mark_modulo = 3;
1482         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
1483                 mark_interval = 5 * fr; /* show 5 seconds */
1484                 show_seconds = true;
1485                 mark_modulo = 3;
1486         } else if (range <= 4 * 60 * fr) { /* 4 minutes */
1487                 mark_interval = 10 * fr; /* show 10 seconds */
1488                 show_seconds = true;
1489                 mark_modulo = 30;
1490         } else if (range <= 10 * 60 * fr) { /* 10 minutes */
1491                 mark_interval = 30 * fr; /* show 30 seconds */
1492                 show_seconds = true;
1493                 mark_modulo = 60;
1494         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
1495                 mark_interval =  60 * fr; /* show 1 minute */
1496                 show_minutes = true;
1497                 mark_modulo = 5;
1498         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
1499                 mark_interval = 2 * 60 * fr; /* show 2 minutes */
1500                 show_minutes = true;
1501                 mark_modulo = 10;
1502         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
1503                 mark_interval = 5 * 60 * fr; /* show 10 minutes */
1504                 show_minutes = true;
1505                 mark_modulo = 30;
1506         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
1507                 mark_interval = 20 * 60 * fr; /* show 20 minutes */
1508                 show_minutes = true;
1509                 mark_modulo = 60;
1510         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
1511                 mark_interval =  60 * 60 * fr; /* show 60 minutes */
1512                 show_hours = true;
1513                 mark_modulo = 2;
1514         } else {
1515
1516                 /* not possible if nframes_t is a 32 bit quantity */
1517
1518                 mark_interval = 4 * 60 * 60 * fr; /* show 4 hrs */
1519         }
1520
1521         nmarks = 1 + (range / mark_interval);
1522         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1523         pos = ((ilower + (mark_interval/2))/mark_interval) * mark_interval;
1524
1525         if (show_seconds) {
1526                 for (n = 0; n < nmarks; pos += mark_interval, ++n) {
1527                         sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
1528                         if (secs % mark_modulo == 0) {
1529                                 if (secs == 0) {
1530                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1531                                 } else {
1532                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1533                                 }
1534                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1535                         } else {
1536                                 snprintf (buf, sizeof(buf), " ");
1537                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1538                         }
1539                         (*marks)[n].label = g_strdup (buf);
1540                         (*marks)[n].position = pos;
1541                 }
1542         } else if (show_minutes) {
1543                 for (n = 0; n < nmarks; pos += mark_interval, ++n) {
1544                         sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
1545                         if (mins % mark_modulo == 0) {
1546                                 if (mins == 0) {
1547                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1548                                 } else {
1549                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1550                                 }
1551                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1552                         } else {
1553                                 snprintf (buf, sizeof(buf), " ");
1554                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1555                         }
1556                         (*marks)[n].label = g_strdup (buf);
1557                         (*marks)[n].position = pos;
1558                 }
1559         } else if (show_hours) {
1560                  for (n = 0; n < nmarks; pos += mark_interval, ++n) {
1561                         sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
1562                         if (hrs % mark_modulo == 0) {
1563                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1564                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1565                         } else {
1566                                 snprintf (buf, sizeof(buf), " ");
1567                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1568                         }
1569                         (*marks)[n].label = g_strdup (buf);
1570                         (*marks)[n].position = pos;
1571                 }
1572         } else {
1573                 for (n = 0; n < nmarks; pos += mark_interval, ++n) {
1574                         sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
1575                         if (millisecs % mark_modulo == 0) {
1576                                 if (millisecs == 0) {
1577                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1578                                 } else {
1579                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1580                                 }
1581                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1582                         } else {
1583                                 snprintf (buf, sizeof(buf), " ");
1584                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1585                         }
1586                         (*marks)[n].label = g_strdup (buf);
1587                         (*marks)[n].position = pos;
1588                 }
1589         }
1590
1591         return nmarks;
1592 }