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         compute_fixed_ruler_scale();
 716         update_fixed_rulers();
 717
 718         time_canvas_event_box.show_all();
 719         time_button_frame.show_all();
 720
 721         compute_current_bbt_points (leftmost_frame, leftmost_frame + (nframes_t)(canvas_width * frames_per_unit));
 722         compute_bbt_ruler_scale (leftmost_frame, leftmost_frame + (nframes_t)(canvas_width * frames_per_unit));
 723
 724         redisplay_tempo (false);
 725 }
 726
 727 void
 728 Editor::update_just_smpte ()
 729 {
 730         ENSURE_GUI_THREAD(mem_fun(*this, &Editor::update_just_smpte));
 731
 732         if (session == 0) {
 733                 return;
 734         }
 735
 736         nframes_t rightmost_frame = leftmost_frame + current_page_frames();
 737
 738         if (ruler_shown[ruler_metric_smpte]) {
 739                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_smpte_ruler), leftmost_frame, rightmost_frame,
 740                                             leftmost_frame, session->current_end_frame());
 741         }
 742 }
 743
 744 void
 745 Editor::compute_fixed_ruler_scale ()
 746 {
 747         if (session == 0) {
 748                 return;
 749         }
 750
 751         if (ruler_shown[ruler_metric_smpte]) {
 752                 set_smpte_ruler_scale (leftmost_frame, leftmost_frame + (canvas_width * frames_per_unit) );
 753         }
 754
 755         if (ruler_shown[ruler_metric_minsec]) {
 756                 set_minsec_ruler_scale (leftmost_frame, leftmost_frame + (canvas_width * frames_per_unit) );
 757         }
 758 }
 759
 760 void
 761 Editor::update_fixed_rulers ()
 762 {
 763         nframes_t rightmost_frame;
 764
 765         if (session == 0) {
 766                 return;
 767         }
 768
 769         ruler_metrics[ruler_metric_smpte].units_per_pixel = frames_per_unit;
 770         ruler_metrics[ruler_metric_frames].units_per_pixel = frames_per_unit;
 771         ruler_metrics[ruler_metric_minsec].units_per_pixel = frames_per_unit;
 772
 773         rightmost_frame = leftmost_frame + current_page_frames ();
 774
 775         /* these force a redraw, which in turn will force execution of the metric callbacks
 776            to compute the relevant ticks to display.
 777         */
 778
 779         if (ruler_shown[ruler_metric_smpte]) {
 780                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_smpte_ruler), leftmost_frame, rightmost_frame,
 781                                             leftmost_frame, session->current_end_frame());
 782         }
 783
 784         if (ruler_shown[ruler_metric_frames]) {
 785                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_frames_ruler), leftmost_frame, rightmost_frame,
 786                                             leftmost_frame, session->current_end_frame());
 787         }
 788
 789         if (ruler_shown[ruler_metric_minsec]) {
 790                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_minsec_ruler), leftmost_frame, rightmost_frame,
 791                                             leftmost_frame, session->current_end_frame());
 792         }
 793 }
 794
 795 void
 796 Editor::update_tempo_based_rulers ()
 797 {
 798         if (session == 0) {
 799                 return;
 800         }
 801
 802         ruler_metrics[ruler_metric_bbt].units_per_pixel = frames_per_unit;
 803
 804         if (ruler_shown[ruler_metric_bbt]) {
 805                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_bbt_ruler), leftmost_frame, leftmost_frame+current_page_frames(),
 806                                             leftmost_frame, session->current_end_frame());
 807         }
 808 }
 809
 810 /* Mark generation */
 811
 812 gint
 813 Editor::_metric_get_smpte (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 814 {
 815         return ruler_editor->metric_get_smpte (marks, lower, upper, maxchars);
 816 }
 817
 818 gint
 819 Editor::_metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 820 {
 821         return ruler_editor->metric_get_bbt (marks, lower, upper, maxchars);
 822 }
 823
 824 gint
 825 Editor::_metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 826 {
 827         return ruler_editor->metric_get_frames (marks, lower, upper, maxchars);
 828 }
 829
 830 gint
 831 Editor::_metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 832 {
 833         return ruler_editor->metric_get_minsec (marks, lower, upper, maxchars);
 834 }
 835
 836 void
 837 Editor::set_smpte_ruler_scale (gdouble lower, gdouble upper)
 838 {
 839         nframes_t range;
 840         nframes_t spacer;
 841         nframes_t fr;
 842
 843         if (session == 0) {
 844                 return;
 845         }
 846
 847         fr = session->frame_rate();
 848
 849         if (lower > (spacer = (nframes_t)(128 * Editor::get_current_zoom ()))) {
 850                 lower = lower - spacer;
 851         } else {
 852                 lower = 0;
 853         }
 854         upper = upper + spacer;
 855         range = (nframes_t) floor (upper - lower);
 856
 857         if (range < (2 * session->frames_per_smpte_frame())) { /* 0 - 2 frames */
 858                 smpte_ruler_scale = smpte_show_bits;
 859                 smpte_mark_modulo = 20;
 860                 smpte_nmarks = 2 + (2 * Config->get_subframes_per_frame());
 861         } else if (range <= (fr / 4)) { /* 2 frames - 0.250 second */
 862                 smpte_ruler_scale = smpte_show_frames;
 863                 smpte_mark_modulo = 1;
 864                 smpte_nmarks = 2 + (range / (nframes_t)session->frames_per_smpte_frame());
 865         } else if (range <= (fr / 2)) { /* 0.25-0.5 second */
 866                 smpte_ruler_scale = smpte_show_frames;
 867                 smpte_mark_modulo = 2;
 868                 smpte_nmarks = 2 + (range / (nframes_t)session->frames_per_smpte_frame());
 869         } else if (range <= fr) { /* 0.5-1 second */
 870                 smpte_ruler_scale = smpte_show_frames;
 871                 smpte_mark_modulo = 5;
 872                 smpte_nmarks = 2 + (range / (nframes_t)session->frames_per_smpte_frame());
 873         } else if (range <= 2 * fr) { /* 1-2 seconds */
 874                 smpte_ruler_scale = smpte_show_frames;
 875                 smpte_mark_modulo = 10;
 876                 smpte_nmarks = 2 + (range / (nframes_t)session->frames_per_smpte_frame());
 877         } else if (range <= 8 * fr) { /* 2-8 seconds */
 878                 smpte_ruler_scale = smpte_show_seconds;
 879                 smpte_mark_modulo = 1;
 880                 smpte_nmarks = 2 + (range / fr);
 881         } else if (range <= 16 * fr) { /* 8-16 seconds */
 882                 smpte_ruler_scale = smpte_show_seconds;
 883                 smpte_mark_modulo = 2;
 884                 smpte_nmarks = 2 + (range / fr);
 885         } else if (range <= 30 * fr) { /* 16-30 seconds */
 886                 smpte_ruler_scale = smpte_show_seconds;
 887                 smpte_mark_modulo = 5;
 888                 smpte_nmarks = 2 + (range / fr);
 889         } else if (range <= 60 * fr) { /* 30-60 seconds */
 890                 smpte_ruler_scale = smpte_show_seconds;
 891                 smpte_mark_modulo = 5;
 892                 smpte_nmarks = 2 + (range / fr);
 893         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
 894                 smpte_ruler_scale = smpte_show_seconds;
 895                 smpte_mark_modulo = 15;
 896                 smpte_nmarks = 2 + (range / fr);
 897         } else if (range <= 4 * 60 * fr) { /* 2-4 minutes */
 898                 smpte_ruler_scale = smpte_show_seconds;
 899                 smpte_mark_modulo = 30;
 900                 smpte_nmarks = 2 + (range / fr);
 901         } else if (range <= 10 * 60 * fr) { /* 4-10 minutes */
 902                 smpte_ruler_scale = smpte_show_minutes;
 903                 smpte_mark_modulo = 2;
 904                 smpte_nmarks = 2 + 10;
 905         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
 906                 smpte_ruler_scale = smpte_show_minutes;
 907                 smpte_mark_modulo = 5;
 908                 smpte_nmarks = 2 + 30;
 909         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
 910                 smpte_ruler_scale = smpte_show_minutes;
 911                 smpte_mark_modulo = 10;
 912                 smpte_nmarks = 2 + 60;
 913         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
 914                 smpte_ruler_scale = smpte_show_minutes;
 915                 smpte_mark_modulo = 30;
 916                 smpte_nmarks = 2 + (60 * 4);
 917         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
 918                 smpte_ruler_scale = smpte_show_hours;
 919                 smpte_mark_modulo = 1;
 920                 smpte_nmarks = 2 + 8;
 921         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
 922                 smpte_ruler_scale = smpte_show_hours;
 923                 smpte_mark_modulo = 1;
 924                 smpte_nmarks = 2 + 24;
 925         } else {
 926
 927                 /* not possible if nframes_t is a 32 bit quantity */
 928
 929                 smpte_ruler_scale = smpte_show_hours;
 930                 smpte_mark_modulo = 4;
 931                 smpte_nmarks = 2 + 24;
 932         }
 933
 934 }
 935
 936 gint
 937 Editor::metric_get_smpte (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 938 {
 939         nframes_t pos;
 940         nframes_t spacer;
 941         SMPTE::Time smpte;
 942         gchar buf[16];
 943         gint n;
 944
 945         if (session == 0) {
 946                 return 0;
 947         }
 948
 949         if (lower > (spacer = (nframes_t)(128 * Editor::get_current_zoom ()))) {
 950                 lower = lower - spacer;
 951         } else {
 952                 lower = 0;
 953         }
 954
 955         pos = (nframes_t) floor (lower);
 956
 957         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * smpte_nmarks);
 958         switch (smpte_ruler_scale) {
 959         case smpte_show_bits:
 960
 961                 // Find smpte time of this sample (pos) with subframe accuracy
 962                 session->sample_to_smpte(pos, smpte, true /* use_offset */, true /* use_subframes */ );
 963
 964                 for (n = 0; n < smpte_nmarks; n++) {
 965                         session->smpte_to_sample(smpte, pos, true /* use_offset */, true /* use_subframes */ );
 966                         if ((smpte.subframes % smpte_mark_modulo) == 0) {
 967                                 if (smpte.subframes == 0) {
 968                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
 969                                         snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
 970                                 } else {
 971                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
 972                                         snprintf (buf, sizeof(buf), ".%02u", smpte.subframes);
 973                                 }
 974                         } else {
 975                                 snprintf (buf, sizeof(buf)," ");
 976                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
 977
 978                         }
 979                         (*marks)[n].label = g_strdup (buf);
 980                         (*marks)[n].position = pos;
 981
 982                         // Increment subframes by one
 983                         SMPTE::increment_subframes( smpte );
 984                 }
 985           break;
 986         case smpte_show_seconds:
 987                 // Find smpte time of this sample (pos)
 988                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
 989                 // Go to next whole second down
 990                 SMPTE::seconds_floor( smpte );
 991
 992                 for (n = 0; n < smpte_nmarks; n++) {
 993                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
 994                         if ((smpte.seconds % smpte_mark_modulo) == 0) {
 995                                 if (smpte.seconds == 0) {
 996                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
 997                                         (*marks)[n].position = pos;
 998                                 } else {
 999                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1000                                         (*marks)[n].position = pos;
1001                                 }
1002                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
1003                         } else {
1004                                 snprintf (buf, sizeof(buf)," ");
1005                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1006                                 (*marks)[n].position = pos;
1007
1008                         }
1009                         (*marks)[n].label = g_strdup (buf);
1010                         SMPTE::increment_seconds( smpte );
1011                 }
1012           break;
1013         case smpte_show_minutes:
1014                 // Find smpte time of this sample (pos)
1015                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
1016                 // Go to next whole minute down
1017                 SMPTE::minutes_floor( smpte );
1018
1019                 for (n = 0; n < smpte_nmarks; n++) {
1020                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
1021                         if ((smpte.minutes % smpte_mark_modulo) == 0) {
1022                                 if (smpte.minutes == 0) {
1023                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1024                                 } else {
1025                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1026                                 }
1027                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
1028                         } else {
1029                                 snprintf (buf, sizeof(buf)," ");
1030                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1031
1032                         }
1033                         (*marks)[n].label = g_strdup (buf);
1034                         (*marks)[n].position = pos;
1035                         SMPTE::increment_minutes( smpte );
1036                 }
1037
1038           break;
1039         case smpte_show_hours:
1040                 // Find smpte time of this sample (pos)
1041                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
1042                 // Go to next whole hour down
1043                 SMPTE::hours_floor( smpte );
1044
1045                 for (n = 0; n < smpte_nmarks; n++) {
1046                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
1047                         if ((smpte.hours % smpte_mark_modulo) == 0) {
1048                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1049                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
1050                         } else {
1051                                 snprintf (buf, sizeof(buf)," ");
1052                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1053
1054                         }
1055                         (*marks)[n].label = g_strdup (buf);
1056                         (*marks)[n].position = pos;
1057
1058                         SMPTE::increment_hours( smpte );
1059                 }
1060           break;
1061         case smpte_show_frames:
1062                 // Find smpte time of this sample (pos)
1063                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
1064                 // Go to next whole frame down
1065                 SMPTE::frames_floor( smpte );
1066
1067                 for (n = 0; n < smpte_nmarks; n++) {
1068                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
1069                         if ((smpte.frames % smpte_mark_modulo) == 0)  {
1070                                 if (smpte.frames == 0) {
1071                                   (*marks)[n].style = GtkCustomRulerMarkMajor;
1072                                 } else {
1073                                   (*marks)[n].style = GtkCustomRulerMarkMinor;
1074                                 }
1075                                 (*marks)[n].position = pos;
1076                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
1077                         } else {
1078                                 snprintf (buf, sizeof(buf)," ");
1079                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1080                                 (*marks)[n].position = pos;
1081
1082                         }
1083                         (*marks)[n].label = g_strdup (buf);
1084                         SMPTE::increment( smpte );
1085                 }
1086
1087           break;
1088         }
1089
1090         return smpte_nmarks;
1091 }
1092
1093
1094 void
1095 Editor::compute_bbt_ruler_scale (nframes_t lower, nframes_t upper)
1096 {
1097         if (session == 0) {
1098                 return;
1099         }
1100         TempoMap::BBTPointList::iterator i;
1101         BBT_Time lower_beat, upper_beat; // the beats at each end of the ruler
1102
1103         session->bbt_time((jack_nframes_t) lower, lower_beat);
1104         session->bbt_time((jack_nframes_t) upper, upper_beat);
1105         uint32_t beats = 0;
1106
1107         bbt_accent_modulo = 1;
1108         bbt_bar_helper_on = false;
1109         bbt_bars = 0;
1110         bbt_nmarks = 1;
1111
1112         bbt_ruler_scale =  bbt_over;
1113
1114         switch (snap_type) {
1115         case SnapToAThirdBeat:
1116                 bbt_beat_subdivision = 3;
1117                 break;
1118         case SnapToAQuarterBeat:
1119                 bbt_beat_subdivision = 4;
1120                 break;
1121         case SnapToAEighthBeat:
1122                 bbt_beat_subdivision = 8;
1123                 bbt_accent_modulo = 2;
1124                 break;
1125         case SnapToASixteenthBeat:
1126                 bbt_beat_subdivision = 16;
1127                 bbt_accent_modulo = 4;
1128                 break;
1129         case SnapToAThirtysecondBeat:
1130                 bbt_beat_subdivision = 32;
1131                 bbt_accent_modulo = 8;
1132                 break;
1133         default:
1134                 bbt_beat_subdivision = 4;
1135                 break;
1136         }
1137
1138         if (current_bbt_points == 0 || current_bbt_points->empty()) {
1139                 return;
1140         }
1141
1142         i = current_bbt_points->end();
1143         i--;
1144         if ((*i).beat >= (*current_bbt_points->begin()).beat) {
1145           bbt_bars = (*i).bar - (*current_bbt_points->begin()).bar;
1146         } else {
1147           bbt_bars = (*i).bar - (*current_bbt_points->begin()).bar - 1;
1148         }
1149         beats = current_bbt_points->size() - bbt_bars;
1150
1151         /*Only show the bar helper if there aren't many bars on the screen */
1152         if ((bbt_bars < 2) || (beats < 5)) {
1153                 bbt_bar_helper_on = true;
1154         }
1155
1156         if (bbt_bars > 8192) {
1157           bbt_ruler_scale =  bbt_over;
1158         } else if (bbt_bars > 1024) {
1159           bbt_ruler_scale = bbt_show_64;
1160         } else if (bbt_bars > 256) {
1161           bbt_ruler_scale = bbt_show_16;
1162         } else if (bbt_bars > 64) {
1163           bbt_ruler_scale = bbt_show_4;
1164         } else if (bbt_bars > 10) {
1165           bbt_ruler_scale =  bbt_show_1;
1166         } else if (bbt_bars > 2) {
1167           bbt_ruler_scale =  bbt_show_beats;
1168         } else  if (bbt_bars > 0) {
1169           bbt_ruler_scale =  bbt_show_ticks;
1170         } else {
1171           bbt_ruler_scale =  bbt_show_ticks_detail;
1172         }
1173
1174         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)) {
1175                 bbt_ruler_scale =  bbt_show_ticks_super_detail;
1176         }
1177 }
1178
1179 gint
1180 Editor::metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
1181 {
1182         if (session == 0) {
1183                 return 0;
1184         }
1185
1186         TempoMap::BBTPointList::iterator i;
1187
1188         char buf[64];
1189         gint  n = 0;
1190         nframes_t pos;
1191         BBT_Time next_beat;
1192         nframes_t next_beat_pos;
1193         uint32_t beats = 0;
1194
1195         uint32_t tick = 0;
1196         uint32_t skip;
1197         uint32_t t;
1198         nframes_t frame_skip;
1199         double frame_skip_error;
1200         double bbt_position_of_helper;
1201         double accumulated_error;
1202         bool i_am_accented = false;
1203         bool helper_active = false;
1204
1205         if (current_bbt_points == 0 || current_bbt_points->empty()) {
1206                 return 0;
1207         }
1208
1209         switch (bbt_ruler_scale) {
1210
1211         case bbt_show_beats:
1212                 beats = current_bbt_points->size();
1213                 bbt_nmarks = beats + 2;
1214
1215                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1216
1217                 (*marks)[0].label = g_strdup(" ");
1218                 (*marks)[0].position = lower;
1219                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1220
1221                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1222                         if  ((*i).type != TempoMap::Beat) {
1223                                 continue;
1224                         }
1225                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1226                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1227                                 (*marks)[0].label = g_strdup (buf);
1228                                 helper_active = true;
1229                         } else {
1230
1231                                 if ((*i).beat == 1) {
1232                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1233                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1234                                 } else if (((*i).beat % 2 == 1)) {
1235                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1236                                         snprintf (buf, sizeof(buf), " ");
1237                                 } else {
1238                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1239                                         snprintf (buf, sizeof(buf), " ");
1240                                 }
1241                                 (*marks)[n].label =  g_strdup (buf);
1242                                 (*marks)[n].position = (*i).frame;
1243                                 n++;
1244                         }
1245                 }
1246                 break;
1247
1248         case bbt_show_ticks:
1249
1250                 beats = current_bbt_points->size();
1251                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1252
1253                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1254                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1255
1256                 (*marks)[0].label = g_strdup(" ");
1257                 (*marks)[0].position = lower;
1258                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1259
1260                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1261                         if  ((*i).type != TempoMap::Beat) {
1262                                 continue;
1263                         }
1264                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1265                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1266                                 (*marks)[0].label = g_strdup (buf);
1267                                 helper_active = true;
1268                         } else {
1269
1270                                 if ((*i).beat == 1) {
1271                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1272                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1273                                 } else {
1274                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1275                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1276                                 }
1277                                 if (((*i).frame < bbt_position_of_helper) && helper_active) {
1278                                         snprintf (buf, sizeof(buf), " ");
1279                                 }
1280                                 (*marks)[n].label =  g_strdup (buf);
1281                                 (*marks)[n].position = (*i).frame;
1282                                 n++;
1283                         }
1284
1285                         /* Add the tick marks */
1286
1287                         /* Find the next beat */
1288                         next_beat.beats = (*i).beat;
1289                         next_beat.bars = (*i).bar;
1290                         next_beat.ticks = 0;
1291
1292                         if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1293                                   next_beat.beats += 1;
1294                         } else {
1295                                   next_beat.bars += 1;
1296                                   next_beat.beats = 1;
1297                         }
1298
1299                         next_beat_pos = session->tempo_map().frame_time(next_beat);
1300
1301                         frame_skip = (nframes_t) floor (frame_skip_error = (session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1302                         frame_skip_error -= frame_skip;
1303                         skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);
1304
1305                         pos = (*i).frame + frame_skip;
1306                         accumulated_error = frame_skip_error;
1307
1308                         tick = skip;
1309
1310                         for (t = 0; (tick < Meter::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1311
1312                                 if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1313                                         i_am_accented = true;
1314                                 }
1315
1316                                 snprintf (buf, sizeof(buf), " ");
1317                                 (*marks)[n].label = g_strdup (buf);
1318
1319                                 /* Error compensation for float to nframes_t*/
1320                                 accumulated_error += frame_skip_error;
1321                                 if (accumulated_error > 1) {
1322                                         pos += 1;
1323                                         accumulated_error -= 1.0f;
1324                                 }
1325
1326                                 (*marks)[n].position = pos;
1327
1328                                 if ((bbt_beat_subdivision > 4) && i_am_accented) {
1329                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1330                                 } else {
1331                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1332                                 }
1333                                 i_am_accented = false;
1334                                 n++;
1335                         }
1336                 }
1337
1338           break;
1339
1340         case bbt_show_ticks_detail:
1341
1342                 beats = current_bbt_points->size();
1343                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1344
1345                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1346                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1347
1348                 (*marks)[0].label = g_strdup(" ");
1349                 (*marks)[0].position = lower;
1350                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1351
1352                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1353                         if  ((*i).type != TempoMap::Beat) {
1354                                 continue;
1355                         }
1356                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1357                                 snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1358                                 (*marks)[0].label = g_strdup (buf);
1359                                 helper_active = true;
1360                         } else {
1361
1362                                 if ((*i).beat == 1) {
1363                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1364                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1365                                 } else {
1366                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1367                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1368                                 }
1369                                 if (((*i).frame < bbt_position_of_helper) && helper_active) {
1370                                         snprintf (buf, sizeof(buf), " ");
1371                                 }
1372                                 (*marks)[n].label =  g_strdup (buf);
1373                                 (*marks)[n].position = (*i).frame;
1374                                 n++;
1375                         }
1376
1377                         /* Add the tick marks */
1378
1379                         /* Find the next beat */
1380
1381                         next_beat.beats = (*i).beat;
1382                         next_beat.bars = (*i).bar;
1383
1384                         if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1385                                   next_beat.beats += 1;
1386                         } else {
1387                                   next_beat.bars += 1;
1388                                   next_beat.beats = 1;
1389                         }
1390
1391                         next_beat_pos = session->tempo_map().frame_time(next_beat);
1392
1393                         frame_skip = (nframes_t) floor (frame_skip_error = (session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1394                         frame_skip_error -= frame_skip;
1395                         skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);
1396
1397                         pos = (*i).frame + frame_skip;
1398                         accumulated_error = frame_skip_error;
1399
1400                         tick = skip;
1401
1402                         for (t = 0; (tick < Meter::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1403
1404                                 if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1405                                         i_am_accented = true;
1406                                 }
1407
1408                                 if (i_am_accented && (pos > bbt_position_of_helper)){
1409                                         snprintf (buf, sizeof(buf), "%" PRIu32, tick);
1410                                 } else {
1411                                         snprintf (buf, sizeof(buf), " ");
1412                                 }
1413
1414                                 (*marks)[n].label = g_strdup (buf);
1415
1416                                 /* Error compensation for float to nframes_t*/
1417                                 accumulated_error += frame_skip_error;
1418                                 if (accumulated_error > 1) {
1419                                         pos += 1;
1420                                         accumulated_error -= 1.0f;
1421                                 }
1422
1423                                 (*marks)[n].position = pos;
1424
1425                                 if ((bbt_beat_subdivision > 4) && i_am_accented) {
1426                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1427                                 } else {
1428                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1429                                 }
1430                                 i_am_accented = false;
1431                                 n++;
1432                         }
1433                 }
1434
1435           break;
1436
1437         case bbt_show_ticks_super_detail:
1438
1439                 beats = current_bbt_points->size();
1440                 bbt_nmarks = (beats + 2) * bbt_beat_subdivision;
1441
1442                 bbt_position_of_helper = lower + (30 * Editor::get_current_zoom ());
1443                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1444
1445                 (*marks)[0].label = g_strdup(" ");
1446                 (*marks)[0].position = lower;
1447                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1448
1449                 for (n = 1,   i = current_bbt_points->begin(); n < bbt_nmarks && i != current_bbt_points->end(); ++i) {
1450                         if  ((*i).type != TempoMap::Beat) {
1451                                   continue;
1452                         }
1453                         if ((*i).frame < lower && (bbt_bar_helper_on)) {
1454                                   snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1455                                   (*marks)[0].label = g_strdup (buf);
1456                                   helper_active = true;
1457                         } else {
1458
1459                                   if ((*i).beat == 1) {
1460                                           (*marks)[n].style = GtkCustomRulerMarkMajor;
1461                                           snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1462                                   } else {
1463                                           (*marks)[n].style = GtkCustomRulerMarkMinor;
1464                                           snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1465                                   }
1466                                   if (((*i).frame < bbt_position_of_helper) && helper_active) {
1467                                           snprintf (buf, sizeof(buf), " ");
1468                                   }
1469                                   (*marks)[n].label =  g_strdup (buf);
1470                                   (*marks)[n].position = (*i).frame;
1471                                   n++;
1472                         }
1473
1474                         /* Add the tick marks */
1475
1476                         /* Find the next beat */
1477
1478                         next_beat.beats = (*i).beat;
1479                         next_beat.bars = (*i).bar;
1480
1481                         if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1482                                   next_beat.beats += 1;
1483                         } else {
1484                                   next_beat.bars += 1;
1485                                   next_beat.beats = 1;
1486                         }
1487
1488                         next_beat_pos = session->tempo_map().frame_time(next_beat);
1489
1490                         frame_skip = (nframes_t) floor (frame_skip_error = (session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1491                         frame_skip_error -= frame_skip;
1492                         skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);
1493
1494                         pos = (*i).frame + frame_skip;
1495                         accumulated_error = frame_skip_error;
1496
1497                         tick = skip;
1498
1499                         for (t = 0; (tick < Meter::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1500
1501                                   if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) {
1502                                           i_am_accented = true;
1503                                   }
1504
1505                                   if (pos > bbt_position_of_helper) {
1506                                           snprintf (buf, sizeof(buf), "%" PRIu32, tick);
1507                                   } else {
1508                                           snprintf (buf, sizeof(buf), " ");
1509                                   }
1510
1511                                   (*marks)[n].label = g_strdup (buf);
1512
1513                                   /* Error compensation for float to nframes_t*/
1514                                   accumulated_error += frame_skip_error;
1515                                   if (accumulated_error > 1) {
1516                                           pos += 1;
1517                                           accumulated_error -= 1.0f;
1518                                   }
1519
1520                                   (*marks)[n].position = pos;
1521
1522                                   if ((bbt_beat_subdivision > 4) && i_am_accented) {
1523                                           (*marks)[n].style = GtkCustomRulerMarkMinor;
1524                                   } else {
1525                                           (*marks)[n].style = GtkCustomRulerMarkMicro;
1526                                   }
1527                                   i_am_accented = false;
1528                                   n++;
1529                         }
1530                 }
1531
1532           break;
1533
1534         case bbt_over:
1535                         bbt_nmarks = 1;
1536                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1537                         snprintf (buf, sizeof(buf), "cannot handle %" PRIu32 " bars", bbt_bars );
1538                         (*marks)[0].style = GtkCustomRulerMarkMajor;
1539                         (*marks)[0].label = g_strdup (buf);
1540                         (*marks)[0].position = lower;
1541                         n = 1;
1542
1543           break;
1544
1545         case bbt_show_64:
1546                         bbt_nmarks = (gint) (bbt_bars / 64) + 1;
1547                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1548                         for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; i++) {
1549                                 if ((*i).type == TempoMap::Bar)  {
1550                                         if ((*i).bar % 64 == 1) {
1551                                                 if ((*i).bar % 256 == 1) {
1552                                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1553                                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1554                                                 } else {
1555                                                         snprintf (buf, sizeof(buf), " ");
1556                                                         if ((*i).bar % 256 == 129)  {
1557                                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1558                                                         } else {
1559                                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1560                                                         }
1561                                                 }
1562                                                 (*marks)[n].label = g_strdup (buf);
1563                                                 (*marks)[n].position = (*i).frame;
1564                                                 n++;
1565                                         }
1566                                 }
1567                         }
1568                         break;
1569
1570         case bbt_show_16:
1571                 bbt_nmarks = (bbt_bars / 16) + 1;
1572                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1573                 for (n = 0,  i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; i++) {
1574                         if ((*i).type == TempoMap::Bar)  {
1575                           if ((*i).bar % 16 == 1) {
1576                                 if ((*i).bar % 64 == 1) {
1577                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1578                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1579                                 } else {
1580                                         snprintf (buf, sizeof(buf), " ");
1581                                         if ((*i).bar % 64 == 33)  {
1582                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1583                                         } else {
1584                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1585                                         }
1586                                 }
1587                                 (*marks)[n].label = g_strdup (buf);
1588                                 (*marks)[n].position = (*i).frame;
1589                                 n++;
1590                           }
1591                         }
1592                 }
1593           break;
1594
1595         case bbt_show_4:
1596                 bbt_nmarks = (bbt_bars / 4) + 1;
1597                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks);
1598                 for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; ++i) {
1599                         if ((*i).type == TempoMap::Bar)  {
1600                           if ((*i).bar % 4 == 1) {
1601                                 if ((*i).bar % 16 == 1) {
1602                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1603                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1604                                 } else {
1605                                         snprintf (buf, sizeof(buf), " ");
1606                                         if ((*i).bar % 16 == 9)  {
1607                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1608                                         } else {
1609                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1610                                         }
1611                                 }
1612                                 (*marks)[n].label = g_strdup (buf);
1613                                 (*marks)[n].position = (*i).frame;
1614                                 n++;
1615                           }
1616                         }
1617                 }
1618           break;
1619
1620         case bbt_show_1:
1621   //    default:
1622                 bbt_nmarks = bbt_bars + 2;
1623                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * bbt_nmarks );
1624                 for (n = 0,  i = current_bbt_points->begin(); i != current_bbt_points->end() && n < bbt_nmarks; i++) {
1625                         if ((*i).type == TempoMap::Bar)  {
1626                           if ((*i).bar % 4 == 1) {
1627                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1628                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1629                           } else {
1630                                 snprintf (buf, sizeof(buf), " ");
1631                                 if ((*i).bar % 4 == 3)  {
1632                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1633                                 } else {
1634                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1635                                 }
1636                           }
1637                         (*marks)[n].label = g_strdup (buf);
1638                         (*marks)[n].position = (*i).frame;
1639                         n++;
1640                         }
1641                 }
1642
1643         break;
1644
1645         }
1646
1647         return n; //return the actual number of marks made, since we might have skipped some from fractional time signatures
1648
1649 }
1650
1651 gint
1652 Editor::metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
1653 {
1654         nframes_t mark_interval;
1655         nframes_t pos;
1656         nframes_t ilower = (nframes_t) floor (lower);
1657         nframes_t iupper = (nframes_t) floor (upper);
1658         gchar buf[16];
1659         gint nmarks;
1660         gint n;
1661
1662         if (session == 0) {
1663                 return 0;
1664         }
1665
1666         mark_interval = (iupper - ilower) / 5;
1667         if (mark_interval > session->frame_rate()) {
1668                 mark_interval -= mark_interval % session->frame_rate();
1669         } else {
1670                 mark_interval = session->frame_rate() / (session->frame_rate() / mark_interval ) ;
1671         }
1672         nmarks = 5;
1673         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1674         for (n = 0, pos = ilower; n < nmarks; pos += mark_interval, ++n) {
1675                 snprintf (buf, sizeof(buf), "%u", pos);
1676                 (*marks)[n].label = g_strdup (buf);
1677                 (*marks)[n].position = pos;
1678                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1679         }
1680
1681         return nmarks;
1682 }
1683
1684 static void
1685 sample_to_clock_parts ( nframes_t sample,
1686                         nframes_t sample_rate,
1687                         long *hrs_p,
1688                         long *mins_p,
1689                         long *secs_p,
1690                         long *millisecs_p)
1691
1692 {
1693         nframes_t left;
1694         long hrs;
1695         long mins;
1696         long secs;
1697         long millisecs;
1698
1699         left = sample;
1700         hrs = left / (sample_rate * 60 * 60);
1701         left -= hrs * sample_rate * 60 * 60;
1702         mins = left / (sample_rate * 60);
1703         left -= mins * sample_rate * 60;
1704         secs = left / sample_rate;
1705         left -= secs * sample_rate;
1706         millisecs = left * 1000 / sample_rate;
1707
1708         *millisecs_p = millisecs;
1709         *secs_p = secs;
1710         *mins_p = mins;
1711         *hrs_p = hrs;
1712
1713         return;
1714 }
1715
1716 void
1717 Editor::set_minsec_ruler_scale (gdouble lower, gdouble upper)
1718 {
1719         nframes_t range;
1720         nframes_t fr;
1721         nframes_t spacer;
1722
1723         if (session == 0) {
1724                 return;
1725         }
1726
1727         fr = session->frame_rate();
1728
1729         /* to prevent 'flashing' */
1730         if (lower > (spacer = (nframes_t)(128 * Editor::get_current_zoom ()))) {
1731                 lower -= spacer;
1732         } else {
1733                 lower = 0;
1734         }
1735         upper += spacer;
1736         range = (nframes_t) (upper - lower);
1737
1738         if (range <  (fr / 50)) {
1739                 minsec_mark_interval =  fr / 1000; /* show 1/1000 seconds */
1740                 minsec_ruler_scale = minsec_show_frames;
1741                 minsec_mark_modulo = 10;
1742         } else if (range <= (fr / 10)) { /* 0-0.1 second */
1743                 minsec_mark_interval = fr / 1000; /* show 1/1000 seconds */
1744                 minsec_ruler_scale = minsec_show_frames;
1745                 minsec_mark_modulo = 10;
1746         } else if (range <= (fr / 2)) { /* 0-0.5 second */
1747                 minsec_mark_interval = fr / 100;  /* show 1/100 seconds */
1748                 minsec_ruler_scale = minsec_show_frames;
1749                 minsec_mark_modulo = 100;
1750         } else if (range <= fr) { /* 0-1 second */
1751                 minsec_mark_interval = fr / 10;  /* show 1/10 seconds */
1752                 minsec_ruler_scale = minsec_show_frames;
1753                 minsec_mark_modulo = 200;
1754         } else if (range <= 2 * fr) { /* 1-2 seconds */
1755                 minsec_mark_interval = fr / 10; /* show 1/10 seconds */
1756                 minsec_ruler_scale = minsec_show_frames;
1757                 minsec_mark_modulo = 500;
1758         } else if (range <= 8 * fr) { /* 2-5 seconds */
1759                 minsec_mark_interval =  fr / 5; /* show 2 seconds */
1760                 minsec_ruler_scale = minsec_show_frames;
1761                 minsec_mark_modulo = 1000;
1762         } else if (range <= 16 * fr) { /* 8-16 seconds */
1763                 minsec_mark_interval =  fr; /* show 1 seconds */
1764                 minsec_ruler_scale = minsec_show_seconds;
1765                 minsec_mark_modulo = 2;
1766         } else if (range <= 30 * fr) { /* 10-30 seconds */
1767                 minsec_mark_interval =  fr; /* show 1 seconds */
1768                 minsec_ruler_scale = minsec_show_seconds;
1769                 minsec_mark_modulo = 5;
1770         } else if (range <= 60 * fr) { /* 30-60 seconds */
1771                 minsec_mark_interval = fr; /* show 1 seconds */
1772                 minsec_ruler_scale = minsec_show_seconds;
1773                 minsec_mark_modulo = 5;
1774         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
1775                 minsec_mark_interval = 5 * fr; /* show 5 seconds */
1776                 minsec_ruler_scale = minsec_show_seconds;
1777                 minsec_mark_modulo = 3;
1778         } else if (range <= 4 * 60 * fr) { /* 4 minutes */
1779                 minsec_mark_interval = 5 * fr; /* show 10 seconds */
1780                 minsec_ruler_scale = minsec_show_seconds;
1781                 minsec_mark_modulo = 30;
1782         } else if (range <= 10 * 60 * fr) { /* 10 minutes */
1783                 minsec_mark_interval = 30 * fr; /* show 30 seconds */
1784                 minsec_ruler_scale = minsec_show_seconds;
1785                 minsec_mark_modulo = 120;
1786         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
1787                 minsec_mark_interval =  60 * fr; /* show 1 minute */
1788                 minsec_ruler_scale = minsec_show_minutes;
1789                 minsec_mark_modulo = 5;
1790         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
1791                 minsec_mark_interval = 2 * 60 * fr; /* show 2 minutes */
1792                 minsec_ruler_scale = minsec_show_minutes;
1793                 minsec_mark_modulo = 10;
1794         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
1795                 minsec_mark_interval = 5 * 60 * fr; /* show 10 minutes */
1796                 minsec_ruler_scale = minsec_show_minutes;
1797                 minsec_mark_modulo = 30;
1798         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
1799                 minsec_mark_interval = 20 * 60 * fr; /* show 20 minutes */
1800                 minsec_ruler_scale = minsec_show_minutes;
1801                 minsec_mark_modulo = 60;
1802         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
1803                 minsec_mark_interval =  60 * 60 * fr; /* show 60 minutes */
1804                 minsec_ruler_scale = minsec_show_hours;
1805                 minsec_mark_modulo = 2;
1806         } else {
1807
1808                 /* not possible if nframes_t is a 32 bit quantity */
1809
1810                 minsec_mark_interval = 4 * 60 * 60 * fr; /* show 4 hrs */
1811         }
1812         minsec_nmarks = 2 + (range / minsec_mark_interval);
1813 }
1814
1815 gint
1816 Editor::metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
1817 {
1818         nframes_t pos;
1819         nframes_t spacer;
1820         long hrs, mins, secs, millisecs;
1821         gchar buf[16];
1822         gint n;
1823
1824         if (session == 0) {
1825                 return 0;
1826         }
1827
1828         /* to prevent 'flashing' */
1829         if (lower > (spacer = (nframes_t)(128 * Editor::get_current_zoom ()))) {
1830                 lower = lower - spacer;
1831         } else {
1832                 lower = 0;
1833         }
1834
1835         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * minsec_nmarks);
1836         pos = ((((nframes_t) floor(lower)) + (minsec_mark_interval/2))/minsec_mark_interval) * minsec_mark_interval;
1837         switch (minsec_ruler_scale) {
1838         case minsec_show_seconds:
1839                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1840                         sample_to_clock_parts (pos, session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1841                         if (secs % minsec_mark_modulo == 0) {
1842                                 if (secs == 0) {
1843                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1844                                 } else {
1845                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1846                                 }
1847                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1848                         } else {
1849                                 snprintf (buf, sizeof(buf), " ");
1850                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1851                         }
1852                         (*marks)[n].label = g_strdup (buf);
1853                         (*marks)[n].position = pos;
1854                 }
1855           break;
1856         case minsec_show_minutes:
1857                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1858                         sample_to_clock_parts (pos, session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1859                         if (mins % minsec_mark_modulo == 0) {
1860                                 if (mins == 0) {
1861                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1862                                 } else {
1863                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1864                                 }
1865                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1866                         } else {
1867                                 snprintf (buf, sizeof(buf), " ");
1868                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1869                         }
1870                         (*marks)[n].label = g_strdup (buf);
1871                         (*marks)[n].position = pos;
1872                 }
1873           break;
1874         case minsec_show_hours:
1875                  for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1876                         sample_to_clock_parts (pos, session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1877                         if (hrs % minsec_mark_modulo == 0) {
1878                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1879                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1880                         } else {
1881                                 snprintf (buf, sizeof(buf), " ");
1882                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1883                         }
1884                         (*marks)[n].label = g_strdup (buf);
1885                         (*marks)[n].position = pos;
1886                 }
1887               break;
1888         case minsec_show_frames:
1889                 for (n = 0; n < minsec_nmarks; pos += minsec_mark_interval, ++n) {
1890                         sample_to_clock_parts (pos, session->frame_rate(), &hrs, &mins, &secs, &millisecs);
1891                         if (millisecs % minsec_mark_modulo == 0) {
1892                                 if (secs == 0) {
1893                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1894                                 } else {
1895                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1896                                 }
1897                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1898                         } else {
1899                                 snprintf (buf, sizeof(buf), " ");
1900                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1901                         }
1902                         (*marks)[n].label = g_strdup (buf);
1903                         (*marks)[n].position = pos;
1904                 }
1905           break;
1906         }
1907
1908         return minsec_nmarks;
1909 }