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