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     $Id$
  19 */
  20
  21 #include <cstdio> // for sprintf, grrr
  22 #include <cmath>
  23
  24 #include <string>
  25
  26 #include <ardour/tempo.h>
  27 #include <gtkmm2ext/gtk_ui.h>
  28
  29 #include "editor.h"
  30 #include "editing.h"
  31 #include "gtk-custom-hruler.h"
  32 #include "gui_thread.h"
  33
  34 #include "i18n.h"
  35
  36 using namespace sigc;
  37 using namespace ARDOUR;
  38 using namespace PBD;
  39 using namespace Gtk;
  40 using namespace Editing;
  41
  42 Editor *Editor::ruler_editor;
  43
  44 /* the order here must match the "metric" enums in editor.h */
  45
  46 GtkCustomMetric Editor::ruler_metrics[4] = {
  47         {1, Editor::_metric_get_smpte },
  48         {1, Editor::_metric_get_bbt },
  49         {1, Editor::_metric_get_frames },
  50         {1, Editor::_metric_get_minsec }
  51 };
  52
  53 void
  54 Editor::initialize_rulers ()
  55 {
  56         ruler_editor = this;
  57         ruler_grabbed_widget = 0;
  58
  59         _smpte_ruler = gtk_custom_hruler_new ();
  60         smpte_ruler = Glib::wrap (_smpte_ruler);
  61         smpte_ruler->set_name ("SMPTERuler");
  62         smpte_ruler->set_size_request (-1, (int)timebar_height);
  63         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_smpte_ruler), &ruler_metrics[ruler_metric_smpte]);
  64         ruler_shown[ruler_metric_smpte] = true;
  65
  66         _bbt_ruler = gtk_custom_hruler_new ();
  67         bbt_ruler = Glib::wrap (_bbt_ruler);
  68         bbt_ruler->set_name ("BBTRuler");
  69         bbt_ruler->set_size_request (-1, (int)timebar_height);
  70         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_bbt_ruler), &ruler_metrics[ruler_metric_bbt]);
  71         ruler_shown[ruler_metric_bbt] = true;
  72
  73         _frames_ruler = gtk_custom_hruler_new ();
  74         frames_ruler = Glib::wrap (_frames_ruler);
  75         frames_ruler->set_name ("FramesRuler");
  76         frames_ruler->set_size_request (-1, (int)timebar_height);
  77         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_frames_ruler), &ruler_metrics[ruler_metric_frames]);
  78
  79         _minsec_ruler = gtk_custom_hruler_new ();
  80         minsec_ruler = Glib::wrap (_minsec_ruler);
  81         minsec_ruler->set_name ("MinSecRuler");
  82         minsec_ruler->set_size_request (-1, (int)timebar_height);
  83         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_minsec_ruler), &ruler_metrics[ruler_metric_minsec]);
  84
  85         ruler_shown[ruler_time_meter] = true;
  86         ruler_shown[ruler_time_tempo] = true;
  87         ruler_shown[ruler_time_marker] = true;
  88         ruler_shown[ruler_time_range_marker] = true;
  89         ruler_shown[ruler_time_transport_marker] = true;
  90         ruler_shown[ruler_metric_frames] = false;
  91         ruler_shown[ruler_metric_minsec] = false;
  92
  93         smpte_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
  94         bbt_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
  95         frames_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
  96         minsec_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
  97
  98         smpte_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
  99         bbt_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 100         frames_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 101         minsec_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 102
 103         smpte_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 104         bbt_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 105         frames_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 106         minsec_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 107
 108         smpte_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 109         bbt_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 110         frames_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 111         minsec_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 112
 113         visible_timebars = 7; /* 4 here, 3 in time_canvas */
 114         ruler_pressed_button = 0;
 115 }
 116
 117
 118 gint
 119 Editor::ruler_button_press (GdkEventButton* ev)
 120 {
 121         if (session == 0) {
 122                 return FALSE;
 123         }
 124
 125         ruler_pressed_button = ev->button;
 126
 127         // jlc: grab ev->window ?
 128         //Gtk::Main::grab_add (*minsec_ruler);
 129         Widget * grab_widget = 0;
 130
 131         if (smpte_ruler->is_realized() && ev->window == smpte_ruler->get_window()->gobj()) grab_widget = smpte_ruler;
 132         else if (bbt_ruler->is_realized() && ev->window == bbt_ruler->get_window()->gobj()) grab_widget = bbt_ruler;
 133         else if (frames_ruler->is_realized() && ev->window == frames_ruler->get_window()->gobj()) grab_widget = frames_ruler;
 134         else if (minsec_ruler->is_realized() && ev->window == minsec_ruler->get_window()->gobj()) grab_widget = minsec_ruler;
 135
 136         if (grab_widget) {
 137                 grab_widget->add_modal_grab ();
 138                 ruler_grabbed_widget = grab_widget;
 139         }
 140
 141         return TRUE;
 142 }
 143
 144 gint
 145 Editor::ruler_button_release (GdkEventButton* ev)
 146 {
 147         gint x,y;
 148         Gdk::ModifierType state;
 149
 150         /* need to use the correct x,y, the event lies */
 151         time_canvas_event_box.get_window()->get_pointer (x, y, state);
 152
 153
 154         ruler_pressed_button = 0;
 155
 156         if (session == 0) {
 157                 return FALSE;
 158         }
 159
 160         hide_verbose_canvas_cursor();
 161         stop_canvas_autoscroll();
 162
 163         nframes_t where = leftmost_frame + pixel_to_frame (x);
 164
 165         switch (ev->button) {
 166         case 1:
 167                 /* transport playhead */
 168                 snap_to (where);
 169                 session->request_locate (where);
 170                 break;
 171
 172         case 2:
 173                 /* edit cursor */
 174                 if (snap_type != Editing::SnapToEditCursor) {
 175                         snap_to (where);
 176                 }
 177                 edit_cursor->set_position (where);
 178                 edit_cursor_clock.set (where);
 179                 break;
 180
 181         case 3:
 182                 /* popup menu */
 183                 snap_to (where);
 184                 popup_ruler_menu (where);
 185
 186                 break;
 187         default:
 188                 break;
 189         }
 190
 191
 192         if (ruler_grabbed_widget) {
 193                 ruler_grabbed_widget->remove_modal_grab();
 194                 ruler_grabbed_widget = 0;
 195         }
 196
 197         return TRUE;
 198 }
 199
 200 gint
 201 Editor::ruler_label_button_release (GdkEventButton* ev)
 202 {
 203         if (ev->button == 3)
 204         {
 205                 popup_ruler_menu();
 206         }
 207
 208         return TRUE;
 209 }
 210
 211
 212 gint
 213 Editor::ruler_mouse_motion (GdkEventMotion* ev)
 214 {
 215         if (session == 0 || !ruler_pressed_button) {
 216                 return FALSE;
 217         }
 218
 219         double wcx=0,wcy=0;
 220         double cx=0,cy=0;
 221
 222         gint x,y;
 223         Gdk::ModifierType state;
 224
 225         /* need to use the correct x,y, the event lies */
 226         time_canvas_event_box.get_window()->get_pointer (x, y, state);
 227
 228
 229         track_canvas.c2w (x, y, wcx, wcy);
 230         track_canvas.w2c (wcx, wcy, cx, cy);
 231
 232         nframes_t where = leftmost_frame + pixel_to_frame (x);
 233
 234
 235         /// ripped from maybe_autoscroll, and adapted to work here
 236         nframes_t one_page = (nframes_t) rint (canvas_width * frames_per_unit);
 237         nframes_t rightmost_frame = leftmost_frame + one_page;
 238
 239         if (autoscroll_timeout_tag < 0) {
 240                 if (where > rightmost_frame) {
 241                         if (rightmost_frame < max_frames) {
 242                                 start_canvas_autoscroll (1);
 243                         }
 244                 } else if (where <= leftmost_frame) {
 245                         if (leftmost_frame > 0) {
 246                                 start_canvas_autoscroll (-1);
 247                         }
 248                 }
 249         } else {
 250                 if (where >= leftmost_frame && where < rightmost_frame) {
 251                         stop_canvas_autoscroll ();
 252                 }
 253         }
 254         //////
 255
 256         snap_to (where);
 257
 258         Cursor* cursor = 0;
 259
 260         switch (ruler_pressed_button) {
 261         case 1:
 262                 /* transport playhead */
 263                 cursor = playhead_cursor;
 264                 break;
 265
 266         case 2:
 267                 /* edit cursor */
 268                 cursor = edit_cursor;
 269                 break;
 270
 271         default:
 272                 break;
 273         }
 274
 275         if (cursor)
 276         {
 277                 cursor->set_position (where);
 278
 279                 if (cursor == edit_cursor) {
 280                         edit_cursor_clock.set (where);
 281                 }
 282
 283                 show_verbose_time_cursor (where, 10, cx, 0);
 284         }
 285
 286         return TRUE;
 287 }
 288
 289
 290 void
 291 Editor::popup_ruler_menu (nframes_t where, ItemType t)
 292 {
 293         using namespace Menu_Helpers;
 294
 295         if (editor_ruler_menu == 0) {
 296                 editor_ruler_menu = new Menu;
 297                 editor_ruler_menu->set_name ("ArdourContextMenu");
 298         }
 299
 300         // always build from scratch
 301         MenuList& ruler_items = editor_ruler_menu->items();
 302         editor_ruler_menu->set_name ("ArdourContextMenu");
 303         ruler_items.clear();
 304
 305         CheckMenuItem * mitem;
 306
 307         no_ruler_shown_update = true;
 308
 309         switch (t) {
 310         case MarkerBarItem:
 311                 ruler_items.push_back (MenuElem (_("New location marker"), bind ( mem_fun(*this, &Editor::mouse_add_new_marker), where)));
 312                 ruler_items.push_back (MenuElem (_("Clear all locations"), mem_fun(*this, &Editor::clear_markers)));
 313                 ruler_items.push_back (SeparatorElem ());
 314                 break;
 315         case RangeMarkerBarItem:
 316                 //ruler_items.push_back (MenuElem (_("New Range")));
 317                 ruler_items.push_back (MenuElem (_("Clear all ranges"), mem_fun(*this, &Editor::clear_ranges)));
 318                 ruler_items.push_back (SeparatorElem ());
 319
 320                 break;
 321         case TransportMarkerBarItem:
 322
 323                 break;
 324
 325         case TempoBarItem:
 326                 ruler_items.push_back (MenuElem (_("New Tempo"), bind ( mem_fun(*this, &Editor::mouse_add_new_tempo_event), where)));
 327                 ruler_items.push_back (MenuElem (_("Clear tempo")));
 328                 ruler_items.push_back (SeparatorElem ());
 329                 break;
 330
 331         case MeterBarItem:
 332                 ruler_items.push_back (MenuElem (_("New Meter"), bind ( mem_fun(*this, &Editor::mouse_add_new_meter_event), where)));
 333                 ruler_items.push_back (MenuElem (_("Clear meter")));
 334                 ruler_items.push_back (SeparatorElem ());
 335                 break;
 336
 337         default:
 338                 break;
 339         }
 340
 341         ruler_items.push_back (CheckMenuElem (_("Min:Secs"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_metric_minsec)));
 342         mitem = (CheckMenuItem *) &ruler_items.back();
 343         if (ruler_shown[ruler_metric_minsec]) {
 344                 mitem->set_active(true);
 345         }
 346
 347         ruler_items.push_back (CheckMenuElem (X_("SMPTE"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_metric_smpte)));
 348         mitem = (CheckMenuItem *) &ruler_items.back();
 349         if (ruler_shown[ruler_metric_smpte]) {
 350                 mitem->set_active(true);
 351         }
 352
 353         ruler_items.push_back (CheckMenuElem (_("Frames"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_metric_frames)));
 354         mitem = (CheckMenuItem *) &ruler_items.back();
 355         if (ruler_shown[ruler_metric_frames]) {
 356                 mitem->set_active(true);
 357         }
 358
 359         ruler_items.push_back (CheckMenuElem (_("Bars:Beats"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_metric_bbt)));
 360         mitem = (CheckMenuItem *) &ruler_items.back();
 361         if (ruler_shown[ruler_metric_bbt]) {
 362                 mitem->set_active(true);
 363         }
 364
 365         ruler_items.push_back (SeparatorElem ());
 366
 367         ruler_items.push_back (CheckMenuElem (_("Meter"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_time_meter)));
 368         mitem = (CheckMenuItem *) &ruler_items.back();
 369         if (ruler_shown[ruler_time_meter]) {
 370                 mitem->set_active(true);
 371         }
 372
 373         ruler_items.push_back (CheckMenuElem (_("Tempo"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_time_tempo)));
 374         mitem = (CheckMenuItem *) &ruler_items.back();
 375         if (ruler_shown[ruler_time_tempo]) {
 376                 mitem->set_active(true);
 377         }
 378
 379         ruler_items.push_back (CheckMenuElem (_("Location Markers"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_time_marker)));
 380         mitem = (CheckMenuItem *) &ruler_items.back();
 381         if (ruler_shown[ruler_time_marker]) {
 382                 mitem->set_active(true);
 383         }
 384
 385         ruler_items.push_back (CheckMenuElem (_("Range Markers"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_time_range_marker)));
 386         mitem = (CheckMenuItem *) &ruler_items.back();
 387         if (ruler_shown[ruler_time_range_marker]) {
 388                 mitem->set_active(true);
 389         }
 390
 391         ruler_items.push_back (CheckMenuElem (_("Loop/Punch Ranges"), bind (mem_fun(*this, &Editor::ruler_toggled), (int)ruler_time_transport_marker)));
 392         mitem = (CheckMenuItem *) &ruler_items.back();
 393         if (ruler_shown[ruler_time_transport_marker]) {
 394                 mitem->set_active(true);
 395         }
 396
 397         editor_ruler_menu->popup (1, 0);
 398
 399         no_ruler_shown_update = false;
 400 }
 401
 402 void
 403 Editor::ruler_toggled (int ruler)
 404 {
 405         if (!session) return;
 406         if (ruler < 0 || ruler >= (int) sizeof(ruler_shown)) return;
 407
 408         if (no_ruler_shown_update) return;
 409
 410         if (ruler_shown[ruler]) {
 411                 if (visible_timebars <= 1) {
 412                         // must always have 1 visible
 413                         return;
 414                 }
 415         }
 416
 417         ruler_shown[ruler] = !ruler_shown[ruler];
 418
 419         update_ruler_visibility ();
 420
 421         // update session extra RulerVisibility
 422         store_ruler_visibility ();
 423 }
 424
 425 void
 426 Editor::store_ruler_visibility ()
 427 {
 428         XMLNode* node = new XMLNode(X_("RulerVisibility"));
 429
 430         node->add_property (X_("smpte"), ruler_shown[ruler_metric_smpte] ? "yes": "no");
 431         node->add_property (X_("bbt"), ruler_shown[ruler_metric_bbt] ? "yes": "no");
 432         node->add_property (X_("frames"), ruler_shown[ruler_metric_frames] ? "yes": "no");
 433         node->add_property (X_("minsec"), ruler_shown[ruler_metric_minsec] ? "yes": "no");
 434         node->add_property (X_("tempo"), ruler_shown[ruler_time_tempo] ? "yes": "no");
 435         node->add_property (X_("meter"), ruler_shown[ruler_time_meter] ? "yes": "no");
 436         node->add_property (X_("marker"), ruler_shown[ruler_time_marker] ? "yes": "no");
 437         node->add_property (X_("rangemarker"), ruler_shown[ruler_time_range_marker] ? "yes": "no");
 438         node->add_property (X_("transportmarker"), ruler_shown[ruler_time_transport_marker] ? "yes": "no");
 439
 440         session->add_extra_xml (*node);
 441         session->set_dirty ();
 442 }
 443
 444 void
 445 Editor::restore_ruler_visibility ()
 446 {
 447         XMLProperty* prop;
 448         XMLNode * node = session->extra_xml (X_("RulerVisibility"));
 449
 450         if (node) {
 451                 if ((prop = node->property ("smpte")) != 0) {
 452                         if (prop->value() == "yes")
 453                                 ruler_shown[ruler_metric_smpte] = true;
 454                         else
 455                                 ruler_shown[ruler_metric_smpte] = false;
 456                 }
 457                 if ((prop = node->property ("bbt")) != 0) {
 458                         if (prop->value() == "yes")
 459                                 ruler_shown[ruler_metric_bbt] = true;
 460                         else
 461                                 ruler_shown[ruler_metric_bbt] = false;
 462                 }
 463                 if ((prop = node->property ("frames")) != 0) {
 464                         if (prop->value() == "yes")
 465                                 ruler_shown[ruler_metric_frames] = true;
 466                         else
 467                                 ruler_shown[ruler_metric_frames] = false;
 468                 }
 469                 if ((prop = node->property ("minsec")) != 0) {
 470                         if (prop->value() == "yes")
 471                                 ruler_shown[ruler_metric_minsec] = true;
 472                         else
 473                                 ruler_shown[ruler_metric_minsec] = false;
 474                 }
 475                 if ((prop = node->property ("tempo")) != 0) {
 476                         if (prop->value() == "yes")
 477                                 ruler_shown[ruler_time_tempo] = true;
 478                         else
 479                                 ruler_shown[ruler_time_tempo] = false;
 480                 }
 481                 if ((prop = node->property ("meter")) != 0) {
 482                         if (prop->value() == "yes")
 483                                 ruler_shown[ruler_time_meter] = true;
 484                         else
 485                                 ruler_shown[ruler_time_meter] = false;
 486                 }
 487                 if ((prop = node->property ("marker")) != 0) {
 488                         if (prop->value() == "yes")
 489                                 ruler_shown[ruler_time_marker] = true;
 490                         else
 491                                 ruler_shown[ruler_time_marker] = false;
 492                 }
 493                 if ((prop = node->property ("rangemarker")) != 0) {
 494                         if (prop->value() == "yes")
 495                                 ruler_shown[ruler_time_range_marker] = true;
 496                         else
 497                                 ruler_shown[ruler_time_range_marker] = false;
 498                 }
 499                 if ((prop = node->property ("transportmarker")) != 0) {
 500                         if (prop->value() == "yes")
 501                                 ruler_shown[ruler_time_transport_marker] = true;
 502                         else
 503                                 ruler_shown[ruler_time_transport_marker] = false;
 504                 }
 505
 506         }
 507
 508         update_ruler_visibility ();
 509 }
 510
 511
 512 void
 513 Editor::update_ruler_visibility ()
 514 {
 515         using namespace Box_Helpers;
 516         BoxList & lab_children =  time_button_vbox.children();
 517         BoxList & ruler_children =  time_canvas_vbox.children();
 518
 519         visible_timebars = 0;
 520
 521         lab_children.clear();
 522
 523         // leave the last one (the time_canvas) intact
 524         while (ruler_children.size() > 1) {
 525                 ruler_children.pop_front();
 526         }
 527
 528         BoxList::iterator canvaspos = ruler_children.begin();
 529
 530         _smpte_ruler = gtk_custom_hruler_new ();
 531         smpte_ruler = Glib::wrap (_smpte_ruler);
 532         smpte_ruler->set_name ("SMPTERuler");
 533         smpte_ruler->set_size_request (-1, (int)timebar_height);
 534         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_smpte_ruler), &ruler_metrics[ruler_metric_smpte]);
 535
 536         _bbt_ruler = gtk_custom_hruler_new ();
 537         bbt_ruler = Glib::wrap (_bbt_ruler);
 538         bbt_ruler->set_name ("BBTRuler");
 539         bbt_ruler->set_size_request (-1, (int)timebar_height);
 540         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_bbt_ruler), &ruler_metrics[ruler_metric_bbt]);
 541
 542         _frames_ruler = gtk_custom_hruler_new ();
 543         frames_ruler = Glib::wrap (_frames_ruler);
 544         frames_ruler->set_name ("FramesRuler");
 545         frames_ruler->set_size_request (-1, (int)timebar_height);
 546         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_frames_ruler), &ruler_metrics[ruler_metric_frames]);
 547
 548         _minsec_ruler = gtk_custom_hruler_new ();
 549         minsec_ruler = Glib::wrap (_minsec_ruler);
 550         minsec_ruler->set_name ("MinSecRuler");
 551         minsec_ruler->set_size_request (-1, (int)timebar_height);
 552         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_minsec_ruler), &ruler_metrics[ruler_metric_minsec]);
 553
 554
 555         smpte_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 556         bbt_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 557         frames_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 558         minsec_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
 559
 560         smpte_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 561         bbt_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 562         frames_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 563         minsec_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 564
 565         smpte_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 566         bbt_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 567         frames_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 568         minsec_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 569
 570         smpte_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 571         bbt_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 572         frames_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 573         minsec_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 574
 575
 576         if (ruler_shown[ruler_metric_minsec]) {
 577                 lab_children.push_back (Element(minsec_label, PACK_SHRINK, PACK_START));
 578                 ruler_children.insert (canvaspos, Element(*minsec_ruler, PACK_SHRINK, PACK_START));
 579                 visible_timebars++;
 580         }
 581
 582         if (ruler_shown[ruler_metric_smpte]) {
 583                 lab_children.push_back (Element(smpte_label, PACK_SHRINK, PACK_START));
 584                 ruler_children.insert (canvaspos, Element(*smpte_ruler, PACK_SHRINK, PACK_START));
 585                 visible_timebars++;
 586         }
 587
 588         if (ruler_shown[ruler_metric_frames]) {
 589                 lab_children.push_back (Element(frame_label, PACK_SHRINK, PACK_START));
 590                 ruler_children.insert (canvaspos, Element(*frames_ruler, PACK_SHRINK, PACK_START));
 591                 visible_timebars++;
 592         }
 593
 594         if (ruler_shown[ruler_metric_bbt]) {
 595                 lab_children.push_back (Element(bbt_label, PACK_SHRINK, PACK_START));
 596                 ruler_children.insert (canvaspos, Element(*bbt_ruler, PACK_SHRINK, PACK_START));
 597                 visible_timebars++;
 598         }
 599
 600         double tbpos = 0.0;
 601         double old_unit_pos ;
 602
 603         if (ruler_shown[ruler_time_meter]) {
 604                 lab_children.push_back (Element(meter_label, PACK_SHRINK, PACK_START));
 605
 606                 old_unit_pos = meter_group->property_y();
 607                 if (tbpos != old_unit_pos) {
 608                         meter_group->move ( 0.0, tbpos - old_unit_pos);
 609                 }
 610                 meter_group->show();
 611                 tbpos += timebar_height;
 612                 visible_timebars++;
 613         }
 614         else {
 615                 meter_group->hide();
 616         }
 617
 618         if (ruler_shown[ruler_time_tempo]) {
 619                 lab_children.push_back (Element(tempo_label, PACK_SHRINK, PACK_START));
 620                 old_unit_pos = tempo_group->property_y();
 621                 if (tbpos != old_unit_pos) {
 622                         tempo_group->move(0.0, tbpos - old_unit_pos);
 623                 }
 624                 tempo_group->show();
 625                 tbpos += timebar_height;
 626                 visible_timebars++;
 627         }
 628         else {
 629                 tempo_group->hide();
 630         }
 631
 632         if (ruler_shown[ruler_time_marker]) {
 633                 lab_children.push_back (Element(mark_label, PACK_SHRINK, PACK_START));
 634                 old_unit_pos = marker_group->property_y();
 635                 if (tbpos != old_unit_pos) {
 636                         marker_group->move ( 0.0, tbpos - old_unit_pos);
 637                 }
 638                 marker_group->show();
 639                 tbpos += timebar_height;
 640                 visible_timebars++;
 641         }
 642         else {
 643                 marker_group->hide();
 644         }
 645
 646         if (ruler_shown[ruler_time_range_marker]) {
 647                 lab_children.push_back (Element(range_mark_label, PACK_SHRINK, PACK_START));
 648                 old_unit_pos = range_marker_group->property_y();
 649                 if (tbpos != old_unit_pos) {
 650                         range_marker_group->move (0.0, tbpos - old_unit_pos);
 651                 }
 652                 range_marker_group->show();
 653                 tbpos += timebar_height;
 654                 visible_timebars++;
 655         }
 656         else {
 657                 range_marker_group->hide();
 658         }
 659
 660         if (ruler_shown[ruler_time_transport_marker]) {
 661                 lab_children.push_back (Element(transport_mark_label, PACK_SHRINK, PACK_START));
 662                 old_unit_pos = transport_marker_group->property_y();
 663                 if (tbpos != old_unit_pos) {
 664                         transport_marker_group->move ( 0.0, tbpos - old_unit_pos);
 665                 }
 666                 transport_marker_group->show();
 667                 tbpos += timebar_height;
 668                 visible_timebars++;
 669         }
 670         else {
 671                 transport_marker_group->hide();
 672         }
 673
 674         time_canvas_vbox.set_size_request (-1, (int)(timebar_height * visible_timebars));
 675         time_canvas_event_box.queue_resize();
 676
 677         update_fixed_rulers();
 678         //update_tempo_based_rulers();
 679         tempo_map_changed(Change (0));
 680
 681         time_canvas_event_box.show_all();
 682         time_button_event_box.show_all();
 683 }
 684
 685 void
 686 Editor::update_just_smpte ()
 687 {
 688         ENSURE_GUI_THREAD(mem_fun(*this, &Editor::update_just_smpte));
 689
 690         if (session == 0) {
 691                 return;
 692         }
 693
 694         /* XXX Note the potential loss of accuracy here as we convert from
 695            an uint32_t (or larger) to a float ... what to do ?
 696         */
 697
 698         nframes_t page = (nframes_t) floor (canvas_width * frames_per_unit);
 699         nframes_t rightmost_frame = leftmost_frame + page;
 700
 701         if (ruler_shown[ruler_metric_smpte]) {
 702                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_smpte_ruler), leftmost_frame, rightmost_frame,
 703                                             leftmost_frame, session->current_end_frame());
 704         }
 705 }
 706
 707 void
 708 Editor::update_fixed_rulers ()
 709 {
 710         nframes_t rightmost_frame;
 711
 712         if (session == 0) {
 713                 return;
 714         }
 715
 716         /* XXX Note the potential loss of accuracy here as we convert from
 717            an uint32_t (or larger) to a float ... what to do ?
 718         */
 719
 720         nframes_t page = (nframes_t) floor (canvas_width * frames_per_unit);
 721
 722         ruler_metrics[ruler_metric_smpte].units_per_pixel = frames_per_unit;
 723         ruler_metrics[ruler_metric_frames].units_per_pixel = frames_per_unit;
 724         ruler_metrics[ruler_metric_minsec].units_per_pixel = frames_per_unit;
 725
 726         rightmost_frame = leftmost_frame + page;
 727
 728         /* these force a redraw, which in turn will force execution of the metric callbacks
 729            to compute the relevant ticks to display.
 730         */
 731
 732         if (ruler_shown[ruler_metric_smpte]) {
 733                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_smpte_ruler), leftmost_frame, rightmost_frame,
 734                                             leftmost_frame, session->current_end_frame());
 735         }
 736
 737         if (ruler_shown[ruler_metric_frames]) {
 738                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_frames_ruler), leftmost_frame, rightmost_frame,
 739                                             leftmost_frame, session->current_end_frame());
 740         }
 741
 742         if (ruler_shown[ruler_metric_minsec]) {
 743                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_minsec_ruler), leftmost_frame, rightmost_frame,
 744                                             leftmost_frame, session->current_end_frame());
 745         }
 746 }
 747
 748 void
 749 Editor::update_tempo_based_rulers ()
 750 {
 751         if (session == 0) {
 752                 return;
 753         }
 754
 755         /* XXX Note the potential loss of accuracy here as we convert from
 756            an uint32_t (or larger) to a float ... what to do ?
 757         */
 758
 759         nframes_t page = (nframes_t) floor (canvas_width * frames_per_unit);
 760         ruler_metrics[ruler_metric_bbt].units_per_pixel = frames_per_unit;
 761
 762         if (ruler_shown[ruler_metric_bbt]) {
 763                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_bbt_ruler), leftmost_frame, leftmost_frame+page,
 764                                             leftmost_frame, session->current_end_frame());
 765         }
 766 }
 767
 768 /* Mark generation */
 769
 770 gint
 771 Editor::_metric_get_smpte (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 772 {
 773         return ruler_editor->metric_get_smpte (marks, lower, upper, maxchars);
 774 }
 775
 776 gint
 777 Editor::_metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 778 {
 779         return ruler_editor->metric_get_bbt (marks, lower, upper, maxchars);
 780 }
 781
 782 gint
 783 Editor::_metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 784 {
 785         return ruler_editor->metric_get_frames (marks, lower, upper, maxchars);
 786 }
 787
 788 gint
 789 Editor::_metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 790 {
 791         return ruler_editor->metric_get_minsec (marks, lower, upper, maxchars);
 792 }
 793
 794 gint
 795 Editor::metric_get_smpte (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
 796 {
 797         nframes_t range;
 798         nframes_t pos;
 799         nframes_t spacer;
 800         nframes_t fr;
 801         SMPTE::Time smpte;
 802         gchar buf[16];
 803         gint nmarks = 0;
 804         gint n;
 805         bool show_bits = false;
 806         bool show_frames = false;
 807         bool show_seconds = false;
 808         bool show_minutes = false;
 809         bool show_hours = false;
 810         int mark_modulo;
 811
 812         if (session == 0) {
 813                 return 0;
 814         }
 815
 816         fr = session->frame_rate();
 817
 818         if (lower > (spacer = (nframes_t)(128 * Editor::get_current_zoom ()))) {
 819                 lower = lower - spacer;
 820         } else {
 821                 lower = 0;
 822         }
 823         upper = upper + spacer;
 824         range = (nframes_t) floor (upper - lower);
 825
 826         if (range < (2 * session->frames_per_smpte_frame())) { /* 0 - 2 frames */
 827                 show_bits = true;
 828                 mark_modulo = 20;
 829                 nmarks = 1 + 160;
 830         } else if (range <= (fr / 4)) { /* 2 frames - 0.250 second */
 831                 show_frames = true;
 832                 mark_modulo = 1;
 833                 nmarks = 1 + (range / (nframes_t)session->frames_per_smpte_frame());
 834         } else if (range <= (fr / 2)) { /* 0.25-0.5 second */
 835                 show_frames = true;
 836                 mark_modulo = 2;
 837                 nmarks = 1 + (range / (nframes_t)session->frames_per_smpte_frame());
 838         } else if (range <= fr) { /* 0.5-1 second */
 839                 show_frames = true;
 840                 mark_modulo = 5;
 841                 nmarks = 1 + (range / (nframes_t)session->frames_per_smpte_frame());
 842         } else if (range <= 2 * fr) { /* 1-2 seconds */
 843                 show_frames = true;
 844                 mark_modulo = 10;
 845                 nmarks = 1 + (range / (nframes_t)session->frames_per_smpte_frame());
 846         } else if (range <= 8 * fr) { /* 2-8 seconds */
 847                 show_seconds = true;
 848                 mark_modulo = 1;
 849                 nmarks = 1 + (range / fr);
 850         } else if (range <= 16 * fr) { /* 8-16 seconds */
 851                 show_seconds = true;
 852                 mark_modulo = 2;
 853                 nmarks = 1 + (range / fr);
 854         } else if (range <= 30 * fr) { /* 16-30 seconds */
 855                 show_seconds = true;
 856                 mark_modulo = 5;
 857                 nmarks = 1 + (range / fr);
 858         } else if (range <= 60 * fr) { /* 30-60 seconds */
 859                 show_seconds = true;
 860                 mark_modulo = 5;
 861                 nmarks = 1 + (range / fr);
 862         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
 863                 show_seconds = true;
 864                 mark_modulo = 20;
 865                 nmarks = 1 + (range / fr);
 866         } else if (range <= 4 * 60 * fr) { /* 2-4 minutes */
 867                 show_seconds = true;
 868                 mark_modulo = 30;
 869                 nmarks = 1 + (range / fr);
 870         } else if (range <= 10 * 60 * fr) { /* 4-10 minutes */
 871                 show_minutes = true;
 872                 mark_modulo = 2;
 873                 nmarks = 1 + 10;
 874         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
 875                 show_minutes = true;
 876                 mark_modulo = 5;
 877                 nmarks = 1 + 30;
 878         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
 879                 show_minutes = true;
 880                 mark_modulo = 10;
 881                 nmarks = 1 + 60;
 882         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
 883                 show_minutes = true;
 884                 mark_modulo = 30;
 885                 nmarks = 1 + (60 * 4);
 886         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
 887                 show_hours = true;
 888                 mark_modulo = 1;
 889                 nmarks = 1 + 8;
 890         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
 891                 show_hours = true;
 892                 mark_modulo = 1;
 893                 nmarks = 1 + 24;
 894         } else {
 895
 896                 /* not possible if nframes_t is a 32 bit quantity */
 897
 898                 show_hours = true;
 899                 mark_modulo = 4;
 900                 nmarks = 1 + 24;
 901         }
 902
 903         pos = (nframes_t) floor (lower);
 904
 905         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
 906
 907         if (show_bits) {
 908                 // Find smpte time of this sample (pos) with subframe accuracy
 909                 session->sample_to_smpte(pos, smpte, true /* use_offset */, true /* use_subframes */ );
 910
 911                 for (n = 0; n < nmarks; n++) {
 912                         session->smpte_to_sample(smpte, pos, true /* use_offset */, true /* use_subframes */ );
 913                         if ((smpte.subframes % mark_modulo) == 0) {
 914                                 if (smpte.subframes == 0) {
 915                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
 916                                         snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
 917                                 } else {
 918                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
 919                                         snprintf (buf, sizeof(buf), ".%02u", smpte.subframes);
 920                                 }
 921                         } else {
 922                                 snprintf (buf, sizeof(buf)," ");
 923                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
 924
 925                         }
 926                         (*marks)[n].label = g_strdup (buf);
 927                         (*marks)[n].position = pos;
 928
 929                         // Increment subframes by one
 930                         SMPTE::increment_subframes( smpte );
 931                 }
 932         } else if (show_seconds) {
 933                 // Find smpte time of this sample (pos)
 934                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
 935                 // Go to next whole second down
 936                 SMPTE::seconds_floor( smpte );
 937
 938                 for (n = 0; n < nmarks; n++) {
 939                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
 940                         if ((smpte.seconds % mark_modulo) == 0) {
 941                                 if (smpte.seconds == 0) {
 942                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
 943                                         (*marks)[n].position = pos;
 944                                 } else {
 945                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
 946                                         (*marks)[n].position = pos;
 947                                 }
 948                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
 949                         } else {
 950                                 snprintf (buf, sizeof(buf)," ");
 951                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
 952                                 (*marks)[n].position = pos;
 953
 954                         }
 955                         (*marks)[n].label = g_strdup (buf);
 956                         SMPTE::increment_seconds( smpte );
 957                 }
 958         } else if (show_minutes) {
 959                 // Find smpte time of this sample (pos)
 960                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
 961                 // Go to next whole minute down
 962                 SMPTE::minutes_floor( smpte );
 963
 964                 for (n = 0; n < nmarks; n++) {
 965                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
 966                         if ((smpte.minutes % mark_modulo) == 0) {
 967                                 if (smpte.minutes == 0) {
 968                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
 969                                 } else {
 970                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
 971                                 }
 972                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
 973                         } else {
 974                                 snprintf (buf, sizeof(buf)," ");
 975                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
 976
 977                         }
 978                         (*marks)[n].label = g_strdup (buf);
 979                         (*marks)[n].position = pos;
 980                         SMPTE::increment_minutes( smpte );
 981                 }
 982         } else if (show_hours) {
 983                 // Find smpte time of this sample (pos)
 984                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
 985                 // Go to next whole hour down
 986                 SMPTE::hours_floor( smpte );
 987
 988                 for (n = 0; n < nmarks; n++) {
 989                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
 990                         if ((smpte.hours % mark_modulo) == 0) {
 991                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
 992                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
 993                         } else {
 994                                 snprintf (buf, sizeof(buf)," ");
 995                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
 996
 997                         }
 998                         (*marks)[n].label = g_strdup (buf);
 999                         (*marks)[n].position = pos;
1000
1001                         SMPTE::increment_hours( smpte );
1002                 }
1003         } else { // show_frames
1004                 // Find smpte time of this sample (pos)
1005                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
1006                 // Go to next whole frame down
1007                 SMPTE::frames_floor( smpte );
1008
1009                 for (n = 0; n < nmarks; n++) {
1010                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
1011                         if ((smpte.frames % mark_modulo) == 0)  {
1012                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1013                                 (*marks)[n].position = pos;
1014                                 snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
1015                         } else {
1016                                 snprintf (buf, sizeof(buf)," ");
1017                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1018                                 (*marks)[n].position = pos;
1019
1020                         }
1021                         (*marks)[n].label = g_strdup (buf);
1022                         SMPTE::increment( smpte );
1023                 }
1024         }
1025
1026         return nmarks;
1027 }
1028
1029
1030 gint
1031 Editor::metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
1032 {
1033         if (session == 0) {
1034                 return 0;
1035         }
1036
1037         TempoMap::BBTPointList::iterator i;
1038
1039         uint32_t beats = 0;
1040         uint32_t bars = 0;
1041         uint32_t desirable_marks;
1042         uint32_t magic_accent_number = 1;
1043         gint nmarks;
1044         char buf[64];
1045         gint  n = 0;
1046         nframes_t pos;
1047         bool bar_helper_on = true;
1048
1049         BBT_Time next_beat;
1050         nframes_t next_beat_pos;
1051
1052         if ((desirable_marks = maxchars / 7) == 0) {
1053                return 0;
1054         }
1055
1056         /* align the tick marks to whatever we're snapping to... */
1057
1058         switch (snap_type) {
1059         case SnapToAThirdBeat:
1060                 bbt_beat_subdivision = 3;
1061                 break;
1062         case SnapToAQuarterBeat:
1063                 bbt_beat_subdivision = 4;
1064                 break;
1065         case SnapToAEighthBeat:
1066                 bbt_beat_subdivision = 8;
1067                 magic_accent_number = 2;
1068                 break;
1069         case SnapToASixteenthBeat:
1070                 bbt_beat_subdivision = 16;
1071                 magic_accent_number = 4;
1072                 break;
1073         case SnapToAThirtysecondBeat:
1074                 bbt_beat_subdivision = 32;
1075                 magic_accent_number = 8;
1076                 break;
1077         default:
1078                bbt_beat_subdivision = 4;
1079                 break;
1080         }
1081
1082         if (current_bbt_points == 0 || current_bbt_points->empty()) {
1083                 return 0;
1084         }
1085
1086         i = current_bbt_points->end();
1087         i--;
1088         bars = (*i).bar - (*current_bbt_points->begin()).bar;
1089         beats = current_bbt_points->size() - bars;
1090
1091         /*Only show the bar helper if there aren't many bars on the screen */
1092         if (bars > 1) {
1093                 bar_helper_on = false;
1094         }
1095
1096         if (desirable_marks > (beats / 4)) {
1097
1098                 /* we're in beat land...*/
1099
1100                 uint32_t tick = 0;
1101                 uint32_t skip;
1102                 uint32_t t;
1103                 nframes_t frame_skip;
1104                 double frame_skip_error;
1105                 double accumulated_error;
1106                 double position_of_helper;
1107                 bool i_am_accented = false;
1108                 bool we_need_ticks = false;
1109                 bool helper_active = false;
1110
1111                 position_of_helper = lower + (30 * Editor::get_current_zoom ());
1112
1113                 if (desirable_marks >= (beats)) {
1114                         nmarks = (beats * bbt_beat_subdivision) + 1;
1115                         we_need_ticks = true;
1116                 } else {
1117                         nmarks = beats + 1;
1118                 }
1119
1120                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1121
1122                 (*marks)[0].label = g_strdup(" ");
1123                 (*marks)[0].position = lower;
1124                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1125
1126                 for (n = 1,   i = current_bbt_points->begin(); n < nmarks && i != current_bbt_points->end(); ++i) {
1127
1128                         if ((*i).frame < lower && (bar_helper_on)) {
1129                                         snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1130                                         (*marks)[0].label = g_strdup (buf);
1131                                         helper_active = true;
1132                         } else {
1133
1134                           if ((*i).type == TempoMap::Bar)  {
1135                             if (((*i).frame < position_of_helper) && helper_active) {
1136                               snprintf (buf, sizeof(buf), " ");
1137                             } else {
1138                               snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1139                             }
1140                             (*marks)[n].label = g_strdup (buf);
1141                             (*marks)[n].position = (*i).frame;
1142                             (*marks)[n].style = GtkCustomRulerMarkMajor;
1143                             n++;
1144
1145                           } else if (((*i).type == TempoMap::Beat) && ((*i).beat > 1)) {
1146                             ((((*i).frame < position_of_helper) && bar_helper_on) || !we_need_ticks) ?
1147                               snprintf (buf, sizeof(buf), " ") : snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1148                             if (((*i).beat % 2 == 1) || we_need_ticks) {
1149                               (*marks)[n].style = GtkCustomRulerMarkMinor;
1150                             } else {
1151                               (*marks)[n].style = GtkCustomRulerMarkMicro;
1152                             }
1153                             (*marks)[n].label =  g_strdup (buf);
1154                             (*marks)[n].position = (*i).frame;
1155                             n++;
1156                           }
1157
1158                         }
1159
1160
1161                         /* Add the tick marks */
1162
1163                         if (we_need_ticks && (*i).type == TempoMap::Beat) {
1164
1165                                 /* Find the next beat */
1166
1167                                 next_beat.beats = (*i).beat;
1168                                 next_beat.bars = (*i).bar;
1169
1170                                 if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
1171                                   next_beat.beats += 1;
1172                                 } else {
1173                                   next_beat.bars += 1;
1174                                   next_beat.beats = 1;
1175                                 }
1176
1177                                 next_beat_pos = session->tempo_map().frame_time(next_beat);
1178
1179                                 frame_skip = (nframes_t) floor (frame_skip_error = (session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1180                                 frame_skip_error -= frame_skip;
1181                                 skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);
1182
1183                                 pos = (*i).frame + frame_skip;
1184                                 accumulated_error = frame_skip_error;
1185
1186                                 tick = skip;
1187
1188                                 for (t = 0; (tick < Meter::ticks_per_beat) && (n < nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {
1189
1190                                         if (t % magic_accent_number == (magic_accent_number - 1)) {
1191                                                 i_am_accented = true;
1192                                         }
1193                                         if (Editor::get_current_zoom () > 32) {
1194                                                 snprintf (buf, sizeof(buf), " ");
1195                                         } else if ((Editor::get_current_zoom () > 8) && !i_am_accented) {
1196                                                 snprintf (buf, sizeof(buf), " ");
1197                                         } else  if (bar_helper_on && (pos < position_of_helper)) {
1198                                                 snprintf (buf, sizeof(buf), " ");
1199                                         } else {
1200                                                 snprintf (buf, sizeof(buf), "%" PRIu32, tick);
1201                                         }
1202
1203                                         (*marks)[n].label = g_strdup (buf);
1204
1205                                         /* Error compensation for float to nframes_t*/
1206                                         accumulated_error += frame_skip_error;
1207                                         if (accumulated_error > 1) {
1208                                                 pos += 1;
1209                                                 accumulated_error -= 1.0f;
1210                                         }
1211
1212                                         (*marks)[n].position = pos;
1213
1214                                         if ((bbt_beat_subdivision > 4) && i_am_accented) {
1215                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1216                                         } else {
1217                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1218                                         }
1219                                         i_am_accented = false;
1220                                         n++;
1221
1222                                 }
1223                         }
1224                 }
1225                 return n; //return the actual number of marks made, since we might have skipped some fro fractional time signatures
1226
1227        } else {
1228
1229                 /* we're in bar land */
1230
1231                 if (desirable_marks < (bars / 256)) {
1232                         nmarks = 1;
1233                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1234                         snprintf (buf, sizeof(buf), "too many bars... (currently %" PRIu32 ")", bars );
1235                         (*marks)[0].style = GtkCustomRulerMarkMajor;
1236                         (*marks)[0].label = g_strdup (buf);
1237                         (*marks)[0].position = lower;
1238                 } else if (desirable_marks < (uint32_t)(nmarks = (gint) (bars / 64) + 1)) {
1239                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1240                         for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < nmarks; i++) {
1241                                 if ((*i).type == TempoMap::Bar)  {
1242                                         if ((*i).bar % 64 == 1) {
1243                                                 if ((*i).bar % 256 == 1) {
1244                                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1245                                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1246                                                 } else {
1247                                                         snprintf (buf, sizeof(buf), " ");
1248                                                         if ((*i).bar % 256 == 129)  {
1249                                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1250                                                         } else {
1251                                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1252                                                         }
1253                                                 }
1254                                                 (*marks)[n].label = g_strdup (buf);
1255                                                 (*marks)[n].position = (*i).frame;
1256                                                 n++;
1257                                         }
1258                                 }
1259                         }
1260                 } else if (desirable_marks < (uint32_t)(nmarks = (bars / 16) + 1)) {
1261                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1262                         for (n = 0,  i = current_bbt_points->begin(); i != current_bbt_points->end() && n < nmarks; i++) {
1263                                 if ((*i).type == TempoMap::Bar)  {
1264                                         if ((*i).bar % 16 == 1) {
1265                                                 if ((*i).bar % 64 == 1) {
1266                                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1267                                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1268                                                 } else {
1269                                                         snprintf (buf, sizeof(buf), " ");
1270                                                         if ((*i).bar % 64 == 33)  {
1271                                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1272                                                         } else {
1273                                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1274                                                         }
1275                                                 }
1276                                                 (*marks)[n].label = g_strdup (buf);
1277                                                 (*marks)[n].position = (*i).frame;
1278                                                 n++;
1279                                         }
1280                                 }
1281                         }
1282                 } else if (desirable_marks < (uint32_t)(nmarks = (bars / 4) + 1)){
1283                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1284                         for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < nmarks; ++i) {
1285                                 if ((*i).type == TempoMap::Bar)  {
1286                                         if ((*i).bar % 4 == 1) {
1287                                                 if ((*i).bar % 16 == 1) {
1288                                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1289                                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1290                                                 } else {
1291                                                         snprintf (buf, sizeof(buf), " ");
1292                                                         if ((*i).bar % 16 == 9)  {
1293                                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1294                                                         } else {
1295                                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1296                                                         }
1297                                                 }
1298                                                 (*marks)[n].label = g_strdup (buf);
1299                                                 (*marks)[n].position = (*i).frame;
1300                                                 n++;
1301                                         }
1302                                 }
1303                         }
1304                 } else {
1305                         nmarks = bars + 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                                                 snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1311                                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1312                                         } else {
1313                                                 snprintf (buf, sizeof(buf), " ");
1314                                                 if ((*i).bar % 4 == 3)  {
1315                                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1316                                                 } else {
1317                                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1318                                                 }
1319                                         }
1320                                         (*marks)[n].label = g_strdup (buf);
1321                                         (*marks)[n].position = (*i).frame;
1322                                         n++;
1323                                 }
1324                         }
1325                 }
1326                 return n;
1327         }
1328 }
1329
1330 gint
1331 Editor::metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
1332 {
1333         nframes_t mark_interval;
1334         nframes_t pos;
1335         nframes_t ilower = (nframes_t) floor (lower);
1336         nframes_t iupper = (nframes_t) floor (upper);
1337         gchar buf[16];
1338         gint nmarks;
1339         gint n;
1340
1341         if (session == 0) {
1342                 return 0;
1343         }
1344
1345         mark_interval = (iupper - ilower) / 5;
1346         if (mark_interval > session->frame_rate()) {
1347                 mark_interval -= mark_interval % session->frame_rate();
1348         } else {
1349                 mark_interval = session->frame_rate() / (session->frame_rate() / mark_interval ) ;
1350         }
1351         nmarks = 5;
1352         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1353         for (n = 0, pos = ilower; n < nmarks; pos += mark_interval, ++n) {
1354                 snprintf (buf, sizeof(buf), "%u", pos);
1355                 (*marks)[n].label = g_strdup (buf);
1356                 (*marks)[n].position = pos;
1357                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1358         }
1359
1360         return nmarks;
1361 }
1362
1363 static void
1364 sample_to_clock_parts ( nframes_t sample,
1365                         nframes_t sample_rate,
1366                         long *hrs_p,
1367                         long *mins_p,
1368                         long *secs_p,
1369                         long *millisecs_p)
1370
1371 {
1372         nframes_t left;
1373         long hrs;
1374         long mins;
1375         long secs;
1376         long millisecs;
1377
1378         left = sample;
1379         hrs = left / (sample_rate * 60 * 60);
1380         left -= hrs * sample_rate * 60 * 60;
1381         mins = left / (sample_rate * 60);
1382         left -= mins * sample_rate * 60;
1383         secs = left / sample_rate;
1384         left -= secs * sample_rate;
1385         millisecs = left * 1000 / sample_rate;
1386
1387         *millisecs_p = millisecs;
1388         *secs_p = secs;
1389         *mins_p = mins;
1390         *hrs_p = hrs;
1391
1392         return;
1393 }
1394
1395 gint
1396 Editor::metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
1397 {
1398         nframes_t range;
1399         nframes_t fr;
1400         nframes_t mark_interval;
1401         nframes_t pos;
1402         nframes_t spacer;
1403         long hrs, mins, secs, millisecs;
1404         gchar buf[16];
1405         gint nmarks;
1406         gint n;
1407         gint mark_modulo = 100;
1408         bool show_seconds = false;
1409         bool show_minutes = false;
1410         bool show_hours = false;
1411         nframes_t ilower = (nframes_t) floor (lower);
1412         nframes_t iupper = (nframes_t) floor (upper);
1413
1414         if (session == 0) {
1415                 return 0;
1416         }
1417
1418         fr = session->frame_rate();
1419
1420         /* to prevent 'flashing' */
1421         if (lower > (spacer = (nframes_t)(128 * Editor::get_current_zoom ()))) {
1422                 lower = lower - spacer;
1423         } else {
1424                 lower = 0;
1425         }
1426         upper = upper + spacer;
1427         range = iupper - ilower;
1428
1429         if (range <  (fr / 50)) {
1430                 mark_interval =  fr / 100; /* show 1/100 seconds */
1431                 mark_modulo = 10;
1432         } else if (range <= (fr / 10)) { /* 0-0.1 second */
1433                 mark_interval = fr / 50; /* show 1/50 seconds */
1434                 mark_modulo = 20;
1435         } else if (range <= (fr / 2)) { /* 0-0.5 second */
1436                 mark_interval = fr / 20;  /* show 1/20 seconds */
1437                 mark_modulo = 100;
1438         } else if (range <= fr) { /* 0-1 second */
1439                 mark_interval = fr / 10;  /* show 1/10 seconds */
1440                 mark_modulo = 200;
1441         } else if (range <= 2 * fr) { /* 1-2 seconds */
1442                 mark_interval = fr / 2; /* show 1/2 seconds */
1443                 mark_modulo = 500;
1444         } else if (range <= 8 * fr) { /* 2-5 seconds */
1445                 mark_interval =  fr / 5; /* show 2 seconds */
1446                 mark_modulo = 1000;
1447         } else if (range <= 16 * fr) { /* 8-16 seconds */
1448                 mark_interval =  fr; /* show 1 seconds */
1449                 show_seconds = true;
1450                 mark_modulo = 5;
1451         } else if (range <= 30 * fr) { /* 10-30 seconds */
1452                 mark_interval =  fr; /* show 10 seconds */
1453                 show_seconds = true;
1454                 mark_modulo = 5;
1455         } else if (range <= 60 * fr) { /* 30-60 seconds */
1456                 mark_interval = 5 * fr; /* show 5 seconds */
1457                 show_seconds = true;
1458                 mark_modulo = 3;
1459         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
1460                 mark_interval = 5 * fr; /* show 5 seconds */
1461                 show_seconds = true;
1462                 mark_modulo = 3;
1463         } else if (range <= 4 * 60 * fr) { /* 4 minutes */
1464                 mark_interval = 10 * fr; /* show 10 seconds */
1465                 show_seconds = true;
1466                 mark_modulo = 30;
1467         } else if (range <= 10 * 60 * fr) { /* 10 minutes */
1468                 mark_interval = 30 * fr; /* show 30 seconds */
1469                 show_seconds = true;
1470                 mark_modulo = 60;
1471         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
1472                 mark_interval =  60 * fr; /* show 1 minute */
1473                 show_minutes = true;
1474                 mark_modulo = 5;
1475         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
1476                 mark_interval = 2 * 60 * fr; /* show 2 minutes */
1477                 show_minutes = true;
1478                 mark_modulo = 10;
1479         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
1480                 mark_interval = 5 * 60 * fr; /* show 10 minutes */
1481                 show_minutes = true;
1482                 mark_modulo = 30;
1483         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
1484                 mark_interval = 20 * 60 * fr; /* show 20 minutes */
1485                 show_minutes = true;
1486                 mark_modulo = 60;
1487         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
1488                 mark_interval =  60 * 60 * fr; /* show 60 minutes */
1489                 show_hours = true;
1490                 mark_modulo = 2;
1491         } else {
1492
1493                 /* not possible if nframes_t is a 32 bit quantity */
1494
1495                 mark_interval = 4 * 60 * 60 * fr; /* show 4 hrs */
1496         }
1497
1498         nmarks = 1 + (range / mark_interval);
1499         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1500         pos = ((ilower + (mark_interval/2))/mark_interval) * mark_interval;
1501
1502         if (show_seconds) {
1503                 for (n = 0; n < nmarks; pos += mark_interval, ++n) {
1504                         sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
1505                         if (secs % mark_modulo == 0) {
1506                                 if (secs == 0) {
1507                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1508                                 } else {
1509                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1510                                 }
1511                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1512                         } else {
1513                                 snprintf (buf, sizeof(buf), " ");
1514                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1515                         }
1516                         (*marks)[n].label = g_strdup (buf);
1517                         (*marks)[n].position = pos;
1518                 }
1519         } else if (show_minutes) {
1520                 for (n = 0; n < nmarks; pos += mark_interval, ++n) {
1521                         sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
1522                         if (mins % mark_modulo == 0) {
1523                                 if (mins == 0) {
1524                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1525                                 } else {
1526                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1527                                 }
1528                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1529                         } else {
1530                                 snprintf (buf, sizeof(buf), " ");
1531                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1532                         }
1533                         (*marks)[n].label = g_strdup (buf);
1534                         (*marks)[n].position = pos;
1535                 }
1536         } else if (show_hours) {
1537                  for (n = 0; n < nmarks; pos += mark_interval, ++n) {
1538                         sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
1539                         if (hrs % mark_modulo == 0) {
1540                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1541                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1542                         } else {
1543                                 snprintf (buf, sizeof(buf), " ");
1544                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1545                         }
1546                         (*marks)[n].label = g_strdup (buf);
1547                         (*marks)[n].position = pos;
1548                 }
1549         } else {
1550                 for (n = 0; n < nmarks; pos += mark_interval, ++n) {
1551                         sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
1552                         if (millisecs % mark_modulo == 0) {
1553                                 if (millisecs == 0) {
1554                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1555                                 } else {
1556                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1557                                 }
1558                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1559                         } else {
1560                                 snprintf (buf, sizeof(buf), " ");
1561                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1562                         }
1563                         (*marks)[n].label = g_strdup (buf);
1564                         (*marks)[n].position = pos;
1565                 }
1566         }
1567
1568         return nmarks;
1569 }