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 Gtk;
  39 using namespace Editing;
  40
  41 Editor *Editor::ruler_editor;
  42
  43 /* the order here must match the "metric" enums in editor.h */
  44
  45 GtkCustomMetric Editor::ruler_metrics[4] = {
  46         {1, Editor::_metric_get_smpte },
  47         {1, Editor::_metric_get_bbt },
  48         {1, Editor::_metric_get_frames },
  49         {1, Editor::_metric_get_minsec }
  50 };
  51
  52 void
  53 Editor::initialize_rulers ()
  54 {
  55         ruler_editor = this;
  56         ruler_grabbed_widget = 0;
  57
  58         _smpte_ruler = gtk_custom_hruler_new ();
  59         smpte_ruler = Glib::wrap (_smpte_ruler);
  60         smpte_ruler->set_name ("SMPTERuler");
  61         smpte_ruler->set_size_request (-1, (int)timebar_height);
  62         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_smpte_ruler), &ruler_metrics[ruler_metric_smpte]);
  63         ruler_shown[ruler_metric_smpte] = true;
  64
  65         _bbt_ruler = gtk_custom_hruler_new ();
  66         bbt_ruler = Glib::wrap (_bbt_ruler);
  67         bbt_ruler->set_name ("BBTRuler");
  68         bbt_ruler->set_size_request (-1, (int)timebar_height);
  69         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_bbt_ruler), &ruler_metrics[ruler_metric_bbt]);
  70         ruler_shown[ruler_metric_bbt] = true;
  71
  72         _frames_ruler = gtk_custom_hruler_new ();
  73         frames_ruler = Glib::wrap (_frames_ruler);
  74         frames_ruler->set_name ("FramesRuler");
  75         frames_ruler->set_size_request (-1, (int)timebar_height);
  76         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_frames_ruler), &ruler_metrics[ruler_metric_frames]);
  77
  78         _minsec_ruler = gtk_custom_hruler_new ();
  79         minsec_ruler = Glib::wrap (_minsec_ruler);
  80         minsec_ruler->set_name ("MinSecRuler");
  81         minsec_ruler->set_size_request (-1, (int)timebar_height);
  82         gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_minsec_ruler), &ruler_metrics[ruler_metric_minsec]);
  83
  84         ruler_shown[ruler_time_meter] = true;
  85         ruler_shown[ruler_time_tempo] = true;
  86         ruler_shown[ruler_time_marker] = true;
  87         ruler_shown[ruler_time_range_marker] = true;
  88         ruler_shown[ruler_time_transport_marker] = true;
  89         ruler_shown[ruler_metric_frames] = false;
  90         ruler_shown[ruler_metric_minsec] = false;
  91
  92         smpte_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
  93         bbt_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
  94         frames_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
  95         minsec_ruler->set_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
  96
  97         smpte_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
  98         bbt_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
  99         frames_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 100         minsec_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
 101
 102         smpte_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 103         bbt_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 104         frames_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 105         minsec_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
 106
 107         smpte_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 108         bbt_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 109         frames_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 110         minsec_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
 111
 112         visible_timebars = 7; /* 4 here, 3 in time_canvas */
 113         ruler_pressed_button = 0;
 114 }
 115
 116
 117 gint
 118 Editor::ruler_button_press (GdkEventButton* ev)
 119 {
 120         if (session == 0) {
 121                 return FALSE;
 122         }
 123
 124         ruler_pressed_button = ev->button;
 125
 126         // jlc: grab ev->window ?
 127         //Gtk::Main::grab_add (*minsec_ruler);
 128         Widget * grab_widget = 0;
 129
 130         if (smpte_ruler->is_realized() && ev->window == smpte_ruler->get_window()->gobj()) grab_widget = smpte_ruler;
 131         else if (bbt_ruler->is_realized() && ev->window == bbt_ruler->get_window()->gobj()) grab_widget = bbt_ruler;
 132         else if (frames_ruler->is_realized() && ev->window == frames_ruler->get_window()->gobj()) grab_widget = frames_ruler;
 133         else if (minsec_ruler->is_realized() && ev->window == minsec_ruler->get_window()->gobj()) grab_widget = minsec_ruler;
 134
 135         if (grab_widget) {
 136                 grab_widget->add_modal_grab ();
 137                 ruler_grabbed_widget = grab_widget;
 138         }
 139
 140         return TRUE;
 141 }
 142
 143 gint
 144 Editor::ruler_button_release (GdkEventButton* ev)
 145 {
 146         gint x,y;
 147         Gdk::ModifierType state;
 148
 149         /* need to use the correct x,y, the event lies */
 150         time_canvas_event_box.get_window()->get_pointer (x, y, state);
 151
 152
 153         ruler_pressed_button = 0;
 154
 155         if (session == 0) {
 156                 return FALSE;
 157         }
 158
 159         hide_verbose_canvas_cursor();
 160         stop_canvas_autoscroll();
 161
 162         jack_nframes_t where = leftmost_frame + pixel_to_frame (x);
 163
 164         switch (ev->button) {
 165         case 1:
 166                 /* transport playhead */
 167                 snap_to (where);
 168                 session->request_locate (where);
 169                 break;
 170
 171         case 2:
 172                 /* edit cursor */
 173                 if (snap_type != Editing::SnapToEditCursor) {
 174                         snap_to (where);
 175                 }
 176                 edit_cursor->set_position (where);
 177                 edit_cursor_clock.set (where);
 178                 break;
 179
 180         case 3:
 181                 /* popup menu */
 182                 snap_to (where);
 183                 popup_ruler_menu (where);
 184
 185                 break;
 186         default:
 187                 break;
 188         }
 189
 190
 191         if (ruler_grabbed_widget) {
 192                 ruler_grabbed_widget->remove_modal_grab();
 193                 ruler_grabbed_widget = 0;
 194         }
 195
 196         return TRUE;
 197 }
 198
 199 gint
 200 Editor::ruler_label_button_release (GdkEventButton* ev)
 201 {
 202         if (ev->button == 3)
 203         {
 204                 popup_ruler_menu();
 205         }
 206
 207         return TRUE;
 208 }
 209
 210
 211 gint
 212 Editor::ruler_mouse_motion (GdkEventMotion* ev)
 213 {
 214         if (session == 0 || !ruler_pressed_button) {
 215                 return FALSE;
 216         }
 217
 218         double wcx=0,wcy=0;
 219         double cx=0,cy=0;
 220
 221         gint x,y;
 222         Gdk::ModifierType state;
 223
 224         /* need to use the correct x,y, the event lies */
 225         time_canvas_event_box.get_window()->get_pointer (x, y, state);
 226
 227
 228         track_canvas.c2w (x, y, wcx, wcy);
 229         track_canvas.w2c (wcx, wcy, cx, cy);
 230
 231         jack_nframes_t where = leftmost_frame + pixel_to_frame (x);
 232
 233         /// ripped from maybe_autoscroll
 234         jack_nframes_t one_page = (jack_nframes_t) rint (canvas_width * frames_per_unit);
 235         jack_nframes_t rightmost_frame = leftmost_frame + one_page;
 236
 237         jack_nframes_t frame = pixel_to_frame (cx);
 238
 239         if (autoscroll_timeout_tag < 0) {
 240                 if (frame > rightmost_frame) {
 241                         if (rightmost_frame < max_frames) {
 242                                 start_canvas_autoscroll (1);
 243                         }
 244                 } else if (frame < leftmost_frame) {
 245                         if (leftmost_frame > 0) {
 246                                 start_canvas_autoscroll (-1);
 247                         }
 248                 }
 249         } else {
 250                 if (frame >= leftmost_frame && frame < 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 (jack_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_scroller) 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         GtkArg args[1] ;
 603         args[0].name = "y";
 604
 605         if (ruler_shown[ruler_time_meter]) {
 606                 lab_children.push_back (Element(meter_label, PACK_SHRINK, PACK_START));
 607
 608                 gtk_object_get (GTK_OBJECT(meter_group), "y", &old_unit_pos);
 609                 if (tbpos != old_unit_pos) {
 610                         meter_group->move ( 0.0, tbpos - old_unit_pos);
 611                 }
 612
 613                 //gnome_canvas_item_set (meter_group, "y", tbpos, NULL);
 614                 meter_group->show();
 615                 tbpos += timebar_height;
 616                 visible_timebars++;
 617         }
 618         else {
 619                 meter_group->hide();
 620         }
 621
 622         if (ruler_shown[ruler_time_tempo]) {
 623                 lab_children.push_back (Element(tempo_label, PACK_SHRINK, PACK_START));
 624                 gtk_object_get (GTK_OBJECT(tempo_group), "y", &old_unit_pos);
 625                 if (tbpos != old_unit_pos) {
 626                         tempo_group->move(0.0, tbpos - old_unit_pos);
 627                 }
 628                 //gnome_canvas_item_set (tempo_group, "y", tbpos, NULL);
 629                 tempo_group->show();
 630                 tbpos += timebar_height;
 631                 visible_timebars++;
 632         }
 633         else {
 634                 tempo_group->hide();
 635         }
 636
 637         if (ruler_shown[ruler_time_marker]) {
 638                 lab_children.push_back (Element(mark_label, PACK_SHRINK, PACK_START));
 639                 gtk_object_getv (GTK_OBJECT(marker_group), 1, args) ;
 640                 old_unit_pos = GTK_VALUE_DOUBLE (args[0]) ;
 641                 gtk_object_get (GTK_OBJECT(marker_group), "y", &old_unit_pos);
 642                 if (tbpos != old_unit_pos) {
 643                         marker_group->move ( 0.0, tbpos - old_unit_pos);
 644                 }
 645                 //gnome_canvas_item_set (marker_group, "y", tbpos, NULL);
 646                 marker_group->show();
 647                 tbpos += timebar_height;
 648                 visible_timebars++;
 649         }
 650         else {
 651                 marker_group->hide();
 652         }
 653
 654         if (ruler_shown[ruler_time_range_marker]) {
 655                 lab_children.push_back (Element(range_mark_label, PACK_SHRINK, PACK_START));
 656                 gtk_object_getv (GTK_OBJECT(range_marker_group), 1, args) ;
 657                 old_unit_pos = GTK_VALUE_DOUBLE (args[0]) ;
 658                 if (tbpos != old_unit_pos) {
 659                         range_marker_group->move (0.0, tbpos - old_unit_pos);
 660                 }
 661                 //gnome_canvas_item_set (marker_group, "y", tbpos, NULL);
 662                 range_marker_group->show();
 663                 tbpos += timebar_height;
 664                 visible_timebars++;
 665         }
 666         else {
 667                 range_marker_group->hide();
 668         }
 669
 670         if (ruler_shown[ruler_time_transport_marker]) {
 671                 lab_children.push_back (Element(transport_mark_label, PACK_SHRINK, PACK_START));
 672                 gtk_object_get (GTK_OBJECT(transport_marker_group), "y", &old_unit_pos);
 673                 if (tbpos != old_unit_pos) {
 674                         transport_marker_group->move ( 0.0, tbpos - old_unit_pos);
 675                 }
 676                 //gnome_canvas_item_set (marker_group, "y", tbpos, NULL);
 677                 transport_marker_group->show();
 678                 tbpos += timebar_height;
 679                 visible_timebars++;
 680         }
 681         else {
 682                 transport_marker_group->hide();
 683         }
 684
 685         time_canvas_vbox.set_size_request (-1, (int)(timebar_height * visible_timebars));
 686         time_canvas_event_box.queue_resize();
 687
 688         update_fixed_rulers();
 689         //update_tempo_based_rulers();
 690         tempo_map_changed(Change (0));
 691
 692         time_canvas_event_box.show_all();
 693         time_button_event_box.show_all();
 694 }
 695
 696 void
 697 Editor::update_just_smpte ()
 698 {
 699         ENSURE_GUI_THREAD(mem_fun(*this, &Editor::update_just_smpte));
 700
 701         if (session == 0) {
 702                 return;
 703         }
 704
 705         /* XXX Note the potential loss of accuracy here as we convert from
 706            an uint32_t (or larger) to a float ... what to do ?
 707         */
 708
 709         jack_nframes_t page = (jack_nframes_t) floor (canvas_width * frames_per_unit);
 710         jack_nframes_t rightmost_frame = leftmost_frame + page;
 711
 712         if (ruler_shown[ruler_metric_smpte]) {
 713                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_smpte_ruler), leftmost_frame, rightmost_frame,
 714                                             leftmost_frame, session->current_end_frame());
 715         }
 716 }
 717
 718 void
 719 Editor::update_fixed_rulers ()
 720 {
 721         jack_nframes_t rightmost_frame;
 722
 723         if (session == 0) {
 724                 return;
 725         }
 726
 727         /* XXX Note the potential loss of accuracy here as we convert from
 728            an uint32_t (or larger) to a float ... what to do ?
 729         */
 730
 731         jack_nframes_t page = (jack_nframes_t) floor (canvas_width * frames_per_unit);
 732
 733         ruler_metrics[ruler_metric_smpte].units_per_pixel = frames_per_unit;
 734         ruler_metrics[ruler_metric_frames].units_per_pixel = frames_per_unit;
 735         ruler_metrics[ruler_metric_minsec].units_per_pixel = frames_per_unit;
 736
 737         rightmost_frame = leftmost_frame + page;
 738
 739         /* these force a redraw, which in turn will force execution of the metric callbacks
 740            to compute the relevant ticks to display.
 741         */
 742
 743         if (ruler_shown[ruler_metric_smpte]) {
 744                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_smpte_ruler), leftmost_frame, rightmost_frame,
 745                                             leftmost_frame, session->current_end_frame());
 746         }
 747
 748         if (ruler_shown[ruler_metric_frames]) {
 749                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_frames_ruler), leftmost_frame, rightmost_frame,
 750                                             leftmost_frame, session->current_end_frame());
 751         }
 752
 753         if (ruler_shown[ruler_metric_minsec]) {
 754                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_minsec_ruler), leftmost_frame, rightmost_frame,
 755                                             leftmost_frame, session->current_end_frame());
 756         }
 757 }
 758
 759 void
 760 Editor::update_tempo_based_rulers ()
 761 {
 762         if (session == 0) {
 763                 return;
 764         }
 765
 766         /* XXX Note the potential loss of accuracy here as we convert from
 767            an uint32_t (or larger) to a float ... what to do ?
 768         */
 769
 770         jack_nframes_t page = (jack_nframes_t) floor (canvas_width * frames_per_unit);
 771         ruler_metrics[ruler_metric_bbt].units_per_pixel = frames_per_unit;
 772
 773         if (ruler_shown[ruler_metric_bbt]) {
 774                 gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_bbt_ruler), leftmost_frame, leftmost_frame+page,
 775                                             leftmost_frame, session->current_end_frame());
 776         }
 777 }
 778
 779 /* Mark generation */
 780
 781 gint
 782 Editor::_metric_get_smpte (GtkCustomRulerMark **marks, gulong lower, gulong upper, gint maxchars)
 783 {
 784         return ruler_editor->metric_get_smpte (marks, lower, upper, maxchars);
 785 }
 786
 787 gint
 788 Editor::_metric_get_bbt (GtkCustomRulerMark **marks, gulong lower, gulong upper, gint maxchars)
 789 {
 790         return ruler_editor->metric_get_bbt (marks, lower, upper, maxchars);
 791 }
 792
 793 gint
 794 Editor::_metric_get_frames (GtkCustomRulerMark **marks, gulong lower, gulong upper, gint maxchars)
 795 {
 796         return ruler_editor->metric_get_frames (marks, lower, upper, maxchars);
 797 }
 798
 799 gint
 800 Editor::_metric_get_minsec (GtkCustomRulerMark **marks, gulong lower, gulong upper, gint maxchars)
 801 {
 802         return ruler_editor->metric_get_minsec (marks, lower, upper, maxchars);
 803 }
 804
 805 gint
 806 Editor::metric_get_smpte (GtkCustomRulerMark **marks, gulong lower, gulong upper, gint maxchars)
 807 {
 808         jack_nframes_t range;
 809         jack_nframes_t pos;
 810         jack_nframes_t spacer;
 811         jack_nframes_t fr;
 812         SMPTE_Time smpte;
 813         gchar buf[16];
 814         gint nmarks = 0;
 815         gint n;
 816         bool show_bits = false;
 817         bool show_frames = false;
 818         bool show_seconds = false;
 819         bool show_minutes = false;
 820         bool show_hours = false;
 821         int mark_modulo;
 822
 823         if (session == 0) {
 824                 return 0;
 825         }
 826
 827         fr = session->frame_rate();
 828
 829         if (lower > (spacer = (jack_nframes_t)(128 * Editor::get_current_zoom ()))) {
 830                 lower = lower - spacer;
 831         } else {
 832                 upper = upper + spacer - lower;
 833                 lower = 0;
 834         }
 835         range = upper - lower;
 836
 837         if (range < (2 * session->frames_per_smpte_frame())) { /* 0 - 2 frames */
 838                 show_bits = true;
 839                 mark_modulo = 20;
 840                 nmarks = 1 + 160;
 841         } else if (range <= (fr / 4)) { /* 2 frames - 0.250 second */
 842                 show_frames = true;
 843                 mark_modulo = 1;
 844                 nmarks = 1 + (range / (jack_nframes_t)session->frames_per_smpte_frame());
 845         } else if (range <= (fr / 2)) { /* 0.25-0.5 second */
 846                 show_frames = true;
 847                 mark_modulo = 2;
 848                 nmarks = 1 + (range / (jack_nframes_t)session->frames_per_smpte_frame());
 849         } else if (range <= fr) { /* 0.5-1 second */
 850                 show_frames = true;
 851                 mark_modulo = 5;
 852                 nmarks = 1 + (range / (jack_nframes_t)session->frames_per_smpte_frame());
 853         } else if (range <= 2 * fr) { /* 1-2 seconds */
 854                 show_frames = true;
 855                 mark_modulo = 10;
 856                 nmarks = 1 + (range / (jack_nframes_t)session->frames_per_smpte_frame());
 857         } else if (range <= 8 * fr) { /* 2-8 seconds */
 858                 show_seconds = true;
 859                 mark_modulo = 1;
 860                 nmarks = 1 + (range / fr);
 861         } else if (range <= 16 * fr) { /* 8-16 seconds */
 862                 show_seconds = true;
 863                 mark_modulo = 2;
 864                 nmarks = 1 + (range / fr);
 865         } else if (range <= 30 * fr) { /* 16-30 seconds */
 866                 show_seconds = true;
 867                 mark_modulo = 5;
 868                 nmarks = 1 + (range / fr);
 869         } else if (range <= 60 * fr) { /* 30-60 seconds */
 870                 show_seconds = true;
 871                 mark_modulo = 5;
 872                 nmarks = 1 + (range / fr);
 873         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
 874                 show_seconds = true;
 875                 mark_modulo = 20;
 876                 nmarks = 1 + (range / fr);
 877         } else if (range <= 4 * 60 * fr) { /* 2-4 minutes */
 878                 show_seconds = true;
 879                 mark_modulo = 30;
 880                 nmarks = 1 + (range / fr);
 881         } else if (range <= 10 * 60 * fr) { /* 4-10 minutes */
 882                 show_minutes = true;
 883                 mark_modulo = 2;
 884                 nmarks = 1 + 10;
 885         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
 886                 show_minutes = true;
 887                 mark_modulo = 5;
 888                 nmarks = 1 + 30;
 889         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
 890                 show_minutes = true;
 891                 mark_modulo = 10;
 892                 nmarks = 1 + 60;
 893         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
 894                 show_minutes = true;
 895                 mark_modulo = 30;
 896                 nmarks = 1 + (60 * 4);
 897         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
 898                 show_hours = true;
 899                 mark_modulo = 1;
 900                 nmarks = 1 + 8;
 901         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
 902                 show_hours = true;
 903                 mark_modulo = 1;
 904                 nmarks = 1 + 24;
 905         } else {
 906
 907                 /* not possible if jack_nframes_t is a 32 bit quantity */
 908
 909                 show_hours = true;
 910                 mark_modulo = 4;
 911                 nmarks = 1 + 24;
 912         }
 913
 914         pos = lower;
 915
 916         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
 917
 918         if (show_bits) {
 919                 // Find smpte time of this sample (pos) with subframe accuracy
 920                 session->sample_to_smpte(pos, smpte, true /* use_offset */, true /* use_subframes */ );
 921
 922                 for (n = 0; n < nmarks; n++) {
 923                         session->smpte_to_sample(smpte, pos, true /* use_offset */, true /* use_subframes */ );
 924                         if ((smpte.subframes % mark_modulo) == 0) {
 925                                 if (smpte.subframes == 0) {
 926                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
 927                                         snprintf (buf, sizeof(buf), "%s%02ld:%02ld:%02ld:%02ld", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
 928                                 } else {
 929                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
 930                                         snprintf (buf, sizeof(buf), ".%02ld", smpte.subframes);
 931                                 }
 932                         } else {
 933                                 snprintf (buf, sizeof(buf)," ");
 934                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
 935
 936                         }
 937                         (*marks)[n].label = g_strdup (buf);
 938                         (*marks)[n].position = pos;
 939
 940                         // Increment subframes by one
 941                         session->smpte_increment_subframes( smpte );
 942                 }
 943         } else if (show_seconds) {
 944                 // Find smpte time of this sample (pos)
 945                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
 946                 // Go to next whole second down
 947                 session->smpte_seconds_floor( smpte );
 948
 949                 for (n = 0; n < nmarks; n++) {
 950                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
 951                         if ((smpte.seconds % mark_modulo) == 0) {
 952                                 if (smpte.seconds == 0) {
 953                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
 954                                         (*marks)[n].position = pos;
 955                                 } else {
 956                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
 957                                         (*marks)[n].position = pos;
 958                                 }
 959                                 snprintf (buf, sizeof(buf), "%s%02ld:%02ld:%02ld:%02ld", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
 960                         } else {
 961                                 snprintf (buf, sizeof(buf)," ");
 962                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
 963                                 (*marks)[n].position = pos;
 964
 965                         }
 966                         (*marks)[n].label = g_strdup (buf);
 967                         session->smpte_increment_seconds( smpte );
 968                 }
 969         } else if (show_minutes) {
 970                 // Find smpte time of this sample (pos)
 971                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
 972                 // Go to next whole minute down
 973                 session->smpte_minutes_floor( smpte );
 974
 975                 for (n = 0; n < nmarks; n++) {
 976                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
 977                         if ((smpte.minutes % mark_modulo) == 0) {
 978                                 if (smpte.minutes == 0) {
 979                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
 980                                 } else {
 981                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
 982                                 }
 983                                 snprintf (buf, sizeof(buf), "%s%02ld:%02ld:%02ld:%02ld", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
 984                         } else {
 985                                 snprintf (buf, sizeof(buf)," ");
 986                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
 987
 988                         }
 989                         (*marks)[n].label = g_strdup (buf);
 990                         (*marks)[n].position = pos;
 991                         session->smpte_increment_minutes( smpte );
 992                 }
 993         } else if (show_hours) {
 994                 // Find smpte time of this sample (pos)
 995                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
 996                 // Go to next whole hour down
 997                 session->smpte_hours_floor( smpte );
 998
 999                 for (n = 0; n < nmarks; n++) {
1000                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
1001                         if ((smpte.hours % mark_modulo) == 0) {
1002                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1003                                 snprintf (buf, sizeof(buf), "%s%02ld:%02ld:%02ld:%02ld", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
1004                         } else {
1005                                 snprintf (buf, sizeof(buf)," ");
1006                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1007
1008                         }
1009                         (*marks)[n].label = g_strdup (buf);
1010                         (*marks)[n].position = pos;
1011
1012                         session->smpte_increment_hours( smpte );
1013                 }
1014         } else { // show_frames
1015                 // Find smpte time of this sample (pos)
1016                 session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
1017                 // Go to next whole frame down
1018                 session->smpte_frames_floor( smpte );
1019
1020                 for (n = 0; n < nmarks; n++) {
1021                         session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
1022                         if ((smpte.frames % mark_modulo) == 0)  {
1023                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1024                                 (*marks)[n].position = pos;
1025                                 snprintf (buf, sizeof(buf), "%s%02ld:%02ld:%02ld:%02ld", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
1026                         } else {
1027                                 snprintf (buf, sizeof(buf)," ");
1028                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1029                                 (*marks)[n].position = pos;
1030
1031                         }
1032                         (*marks)[n].label = g_strdup (buf);
1033                         session->smpte_increment( smpte );
1034                 }
1035         }
1036
1037         return nmarks;
1038 }
1039
1040
1041 gint
1042 Editor::metric_get_bbt (GtkCustomRulerMark **marks, gulong lower, gulong upper, gint maxchars)
1043 {
1044         if (session == 0) {
1045                 return 0;
1046         }
1047
1048         TempoMap::BBTPointList::iterator i;
1049         TempoMap::BBTPointList *zoomed_bbt_points;
1050         uint32_t beats = 0;
1051         uint32_t bars = 0;
1052         uint32_t tick = 0;
1053         uint32_t skip;
1054         uint32_t t;
1055         uint32_t zoomed_beats = 0;
1056         uint32_t zoomed_bars = 0;
1057         uint32_t desirable_marks;
1058         uint32_t magic_accent_number = 1;
1059         gint nmarks;
1060         char buf[64];
1061         gint n;
1062         jack_nframes_t pos;
1063         jack_nframes_t frame_one_beats_worth;
1064         jack_nframes_t frame_skip;
1065         double frame_skip_error;
1066         double accumulated_error;
1067         bool bar_helper_on = true;
1068
1069
1070         BBT_Time previous_beat;
1071         BBT_Time next_beat;
1072         jack_nframes_t next_beat_pos;
1073
1074         if ((desirable_marks = maxchars / 6) == 0) {
1075                return 0;
1076         }
1077
1078         /* align the tick marks to whatever we're snapping to... */
1079
1080         if (snap_type == SnapToAThirdBeat) {
1081                 bbt_beat_subdivision = 3;
1082         } else if (snap_type == SnapToAQuarterBeat) {
1083                 bbt_beat_subdivision = 4;
1084         } else if (snap_type == SnapToAEighthBeat) {
1085                 bbt_beat_subdivision = 8;
1086                 magic_accent_number = 2;
1087         } else if (snap_type == SnapToASixteenthBeat) {
1088                 bbt_beat_subdivision = 16;
1089                 magic_accent_number = 4;
1090         } else if (snap_type == SnapToAThirtysecondBeat) {
1091                 bbt_beat_subdivision = 32;
1092                 magic_accent_number = 8;
1093         } else {
1094                bbt_beat_subdivision = 4;
1095         }
1096
1097         /* First find what a beat's distance is, so we can start plotting stuff before the beginning of the ruler */
1098
1099         session->bbt_time(lower,previous_beat);
1100         previous_beat.ticks = 0;
1101         next_beat = previous_beat;
1102
1103         if (session->tempo_map().meter_at(lower).beats_per_bar() < (next_beat.beats + 1)) {
1104                next_beat.bars += 1;
1105                next_beat.beats = 1;
1106         } else {
1107                next_beat.beats += 1;
1108         }
1109
1110         frame_one_beats_worth = session->tempo_map().frame_time(next_beat) - session->tempo_map().frame_time(previous_beat);
1111
1112
1113         zoomed_bbt_points = session->tempo_map().get_points((lower >= frame_one_beats_worth) ? lower - frame_one_beats_worth : 0, upper);
1114
1115         if (current_bbt_points == 0 || zoomed_bbt_points == 0 || zoomed_bbt_points->empty()) {
1116                 return 0;
1117         }
1118
1119         for (i = current_bbt_points->begin(); i != current_bbt_points->end(); i++) {
1120                 if ((*i).type == TempoMap::Beat) {
1121                         beats++;
1122                 } else if ((*i).type == TempoMap::Bar) {
1123                         bars++;
1124                 }
1125         }
1126         /*Only show the bar helper if there aren't many bars on the screen */
1127         if (bars > 1) {
1128                 bar_helper_on = false;
1129         }
1130
1131         for (i = zoomed_bbt_points->begin(); i != zoomed_bbt_points->end(); i++) {
1132                 if ((*i).type == TempoMap::Beat) {
1133                         zoomed_beats++;
1134                 } else if ((*i).type == TempoMap::Bar) {
1135                         zoomed_bars++;
1136                 }
1137         }
1138
1139         if (desirable_marks > (beats / 4)) {
1140
1141                 /* we're in beat land...*/
1142
1143                 double position_of_helper;
1144                 bool i_am_accented = false;
1145                 bool we_need_ticks = false;
1146
1147                 position_of_helper = lower + (30 * Editor::get_current_zoom ());
1148
1149                 if (desirable_marks >= (beats * 2)) {
1150                         nmarks = (zoomed_beats * bbt_beat_subdivision) + 1;
1151                         we_need_ticks = true;
1152                 } else {
1153                         nmarks = zoomed_beats + 1;
1154                 }
1155
1156                 *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1157
1158                 (*marks)[0].label = g_strdup(" ");
1159                 (*marks)[0].position = lower;
1160                 (*marks)[0].style = GtkCustomRulerMarkMicro;
1161
1162                 for (n = 1, i = zoomed_bbt_points->begin(); i != zoomed_bbt_points->end() && n < nmarks; ++i) {
1163
1164                         if ((*i).frame <= lower && (bar_helper_on)) {
1165
1166                                         snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
1167                                         (*marks)[0].label = g_strdup (buf);
1168                         } else {
1169
1170
1171                           if ((*i).type == TempoMap::Bar)  {
1172                             tick = 0;
1173                             (((*i).frame < position_of_helper) && bar_helper_on) ?
1174                               snprintf (buf, sizeof(buf), " ") : snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1175                             (*marks)[n].label = g_strdup (buf);
1176                             (*marks)[n].position = (*i).frame;
1177                             (*marks)[n].style = GtkCustomRulerMarkMajor;
1178                             n++;
1179
1180                           } else if (((*i).type == TempoMap::Beat) && ((*i).beat > 1)) {
1181                             tick = 0;
1182                             ((((*i).frame < position_of_helper) && bar_helper_on) || !we_need_ticks) ?
1183                               snprintf (buf, sizeof(buf), " ") : snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
1184                             if (((*i).beat % 2 == 1) || we_need_ticks) {
1185                               (*marks)[n].style = GtkCustomRulerMarkMinor;
1186                             } else {
1187                               (*marks)[n].style = GtkCustomRulerMarkMicro;
1188                             }
1189                             (*marks)[n].label =  g_strdup (buf);
1190                             (*marks)[n].position = (*i).frame;
1191                             n++;
1192                           }
1193
1194                         }
1195                         /* Find the next beat */
1196
1197                         session->bbt_time((*i).frame, next_beat);
1198
1199                         if (session->tempo_map().meter_at((*i).frame).beats_per_bar() > (next_beat.beats + 1)) {
1200                           next_beat.beats += 1;
1201                         } else {
1202                           next_beat.bars += 1;
1203                           next_beat.beats = 1;
1204                         }
1205
1206                         next_beat_pos = session->tempo_map().frame_time(next_beat);
1207
1208                         /* Add the tick marks */
1209
1210                         if (we_need_ticks) {
1211
1212                                 frame_skip = (jack_nframes_t) floor ((session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
1213                                 frame_skip_error =  ((session->frame_rate() *  60.0f) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute())) - frame_skip;
1214                                 skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);
1215
1216                                 pos = (*i).frame + frame_skip;
1217                                 accumulated_error = frame_skip_error;
1218
1219                                 tick += skip;
1220
1221                                 for (t = 0; tick < Meter::ticks_per_beat && pos <= next_beat_pos ; pos += frame_skip, tick += skip, ++t) {
1222
1223                                         if (t % magic_accent_number == (magic_accent_number - 1)) {
1224                                                 i_am_accented = true;
1225                                         }
1226                                         if (Editor::get_current_zoom () > 32) {
1227                                                 snprintf (buf, sizeof(buf), " ");
1228                                         } else if ((Editor::get_current_zoom () > 8) && !i_am_accented) {
1229                                                 snprintf (buf, sizeof(buf), " ");
1230                                         } else  if (bar_helper_on && (pos < position_of_helper)) {
1231                                                 snprintf (buf, sizeof(buf), " ");
1232                                         } else {
1233                                                 snprintf (buf, sizeof(buf), "%" PRIu32, tick);
1234                                         }
1235
1236                                         (*marks)[n].label = g_strdup (buf);
1237
1238                                         /* Error compensation for float to jack_nframes_t*/
1239                                         accumulated_error += frame_skip_error;
1240                                         if (accumulated_error > 1) {
1241                                                 pos += 1;
1242                                                 accumulated_error -= 1.0f;
1243                                         }
1244
1245                                         (*marks)[n].position = pos;
1246
1247                                         if ((bbt_beat_subdivision > 4) && i_am_accented) {
1248                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1249                                         } else {
1250                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1251                                         }
1252                                         i_am_accented = false;
1253                                         n++;
1254
1255                                 }
1256                         }
1257                 }
1258                 delete zoomed_bbt_points;
1259                 return n; //return the actual number of marks made, since we might have skipped some fro fractional time signatures
1260
1261        } else {
1262
1263                 /* we're in bar land */
1264
1265                 if (desirable_marks < (uint32_t) (zoomed_bars / 256)) {
1266                         nmarks = 1;
1267                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1268                         snprintf (buf, sizeof(buf), "too many bars... (currently %" PRIu32 ")", zoomed_bars );
1269                         (*marks)[0].style = GtkCustomRulerMarkMajor;
1270                         (*marks)[0].label = g_strdup (buf);
1271                         (*marks)[0].position = lower;
1272                 } else if (desirable_marks < (uint32_t) (nmarks = (gint) (zoomed_bars / 64))) {
1273                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1274                         for (n = 0, i = zoomed_bbt_points->begin(); i != zoomed_bbt_points->end() && n < nmarks; i++) {
1275                                 if ((*i).type == TempoMap::Bar)  {
1276                                         if ((*i).bar % 64 == 1) {
1277                                                 if ((*i).bar % 256 == 1) {
1278                                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1279                                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1280                                                 } else {
1281                                                         snprintf (buf, sizeof(buf), " ");
1282                                                         if ((*i).bar % 256 == 129)  {
1283                                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1284                                                         } else {
1285                                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1286                                                         }
1287                                                 }
1288                                                 (*marks)[n].label = g_strdup (buf);
1289                                                 (*marks)[n].position = (*i).frame;
1290                                                 n++;
1291                                         }
1292                                 }
1293                         }
1294                 } else if (desirable_marks < (uint32_t) (nmarks = (gint)(zoomed_bars / 16))) {
1295                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1296                         for (n = 0, i = zoomed_bbt_points->begin(); i != zoomed_bbt_points->end() && n < nmarks; i++) {
1297                                 if ((*i).type == TempoMap::Bar)  {
1298                                         if ((*i).bar % 16 == 1) {
1299                                                 if ((*i).bar % 64 == 1) {
1300                                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1301                                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1302                                                 } else {
1303                                                         snprintf (buf, sizeof(buf), " ");
1304                                                         if ((*i).bar % 64 == 33)  {
1305                                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1306                                                         } else {
1307                                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1308                                                         }
1309                                                 }
1310                                                 (*marks)[n].label = g_strdup (buf);
1311                                                 (*marks)[n].position = (*i).frame;
1312                                                 n++;
1313                                         }
1314                                 }
1315                         }
1316                 } else if (desirable_marks < (uint32_t) (nmarks = (gint)(zoomed_bars / 4))){
1317                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1318                         for (n = 0, i = zoomed_bbt_points->begin(); i != zoomed_bbt_points->end() && n < nmarks; ++i) {
1319                                 if ((*i).type == TempoMap::Bar)  {
1320                                         if ((*i).bar % 4 == 1) {
1321                                                 if ((*i).bar % 16 == 1) {
1322                                                         snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1323                                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1324                                                 } else {
1325                                                         snprintf (buf, sizeof(buf), " ");
1326                                                         if ((*i).bar % 16 == 9)  {
1327                                                                 (*marks)[n].style = GtkCustomRulerMarkMinor;
1328                                                         } else {
1329                                                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1330                                                         }
1331                                                 }
1332                                                 (*marks)[n].label = g_strdup (buf);
1333                                                 (*marks)[n].position = (*i).frame;
1334                                                 n++;
1335                                         }
1336                                 }
1337                         }
1338                 } else {
1339                         nmarks = zoomed_bars;
1340                         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1341                         for (n = 0, i = zoomed_bbt_points->begin(); i != zoomed_bbt_points->end() && n < nmarks; i++) {
1342                                 if ((*i).type == TempoMap::Bar)  {
1343                                         if ((*i).bar % 4 == 1) {
1344                                                 snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
1345                                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1346                                         } else {
1347                                                 snprintf (buf, sizeof(buf), " ");
1348                                                 if ((*i).bar % 4 == 3)  {
1349                                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1350                                                 } else {
1351                                                         (*marks)[n].style = GtkCustomRulerMarkMicro;
1352                                                 }
1353                                         }
1354                                         (*marks)[n].label = g_strdup (buf);
1355                                         (*marks)[n].position = (*i).frame;
1356                                         n++;
1357                                 }
1358                         }
1359                 }
1360                 delete zoomed_bbt_points;
1361                 return nmarks;
1362         }
1363 }
1364
1365 gint
1366 Editor::metric_get_frames (GtkCustomRulerMark **marks, gulong lower, gulong upper, gint maxchars)
1367 {
1368         jack_nframes_t mark_interval;
1369         jack_nframes_t pos;
1370         gchar buf[16];
1371         gint nmarks;
1372         gint n;
1373
1374         if (session == 0) {
1375                 return 0;
1376         }
1377
1378         mark_interval = (upper - lower) / 5;
1379         if (mark_interval > session->frame_rate()) {
1380                 mark_interval -= mark_interval % session->frame_rate();
1381         } else {
1382                 mark_interval = session->frame_rate() / (session->frame_rate() / mark_interval ) ;
1383         }
1384         nmarks = 5;
1385         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1386         for (n = 0, pos = lower; n < nmarks; pos += mark_interval, ++n) {
1387                 snprintf (buf, sizeof(buf), "%u", pos);
1388                 (*marks)[n].label = g_strdup (buf);
1389                 (*marks)[n].position = pos;
1390                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1391         }
1392
1393         return nmarks;
1394 }
1395
1396 static void
1397 sample_to_clock_parts ( jack_nframes_t sample,
1398                         jack_nframes_t sample_rate,
1399                         long *hrs_p,
1400                         long *mins_p,
1401                         long *secs_p,
1402                         long *millisecs_p)
1403
1404 {
1405         jack_nframes_t left;
1406         long hrs;
1407         long mins;
1408         long secs;
1409         long millisecs;
1410
1411         left = sample;
1412         hrs = left / (sample_rate * 60 * 60);
1413         left -= hrs * sample_rate * 60 * 60;
1414         mins = left / (sample_rate * 60);
1415         left -= mins * sample_rate * 60;
1416         secs = left / sample_rate;
1417         left -= secs * sample_rate;
1418         millisecs = left * 1000 / sample_rate;
1419
1420         *millisecs_p = millisecs;
1421         *secs_p = secs;
1422         *mins_p = mins;
1423         *hrs_p = hrs;
1424
1425         return;
1426 }
1427
1428 gint
1429 Editor::metric_get_minsec (GtkCustomRulerMark **marks, gulong lower, gulong upper, gint maxchars)
1430 {
1431         jack_nframes_t range;
1432         jack_nframes_t fr;
1433         jack_nframes_t mark_interval;
1434         jack_nframes_t pos;
1435         jack_nframes_t spacer;
1436         long hrs, mins, secs, millisecs;
1437         gchar buf[16];
1438         gint nmarks;
1439         gint n;
1440         gint mark_modulo = 100;
1441         bool show_seconds = false;
1442         bool show_minutes = false;
1443         bool show_hours = false;
1444
1445         if (session == 0) {
1446                 return 0;
1447         }
1448
1449         fr = session->frame_rate();
1450
1451         /* to prevent 'flashing' */
1452         if (lower > (spacer = (jack_nframes_t)(128 * Editor::get_current_zoom ()))) {
1453                 lower = lower - spacer;
1454         } else {
1455                 upper = upper + spacer;
1456                 lower = 0;
1457         }
1458         range = upper - lower;
1459
1460         if (range <  (fr / 50)) {
1461                 mark_interval =  fr / 100; /* show 1/100 seconds */
1462                 mark_modulo = 10;
1463         } else if (range <= (fr / 10)) { /* 0-0.1 second */
1464                 mark_interval = fr / 50; /* show 1/50 seconds */
1465                 mark_modulo = 20;
1466         } else if (range <= (fr / 2)) { /* 0-0.5 second */
1467                 mark_interval = fr / 20;  /* show 1/20 seconds */
1468                 mark_modulo = 100;
1469         } else if (range <= fr) { /* 0-1 second */
1470                 mark_interval = fr / 10;  /* show 1/10 seconds */
1471                 mark_modulo = 200;
1472         } else if (range <= 2 * fr) { /* 1-2 seconds */
1473                 mark_interval = fr / 2; /* show 1/2 seconds */
1474                 mark_modulo = 500;
1475         } else if (range <= 8 * fr) { /* 2-5 seconds */
1476                 mark_interval =  fr / 5; /* show 2 seconds */
1477                 mark_modulo = 1000;
1478         } else if (range <= 16 * fr) { /* 8-16 seconds */
1479                 mark_interval =  fr; /* show 1 seconds */
1480                 show_seconds = true;
1481                 mark_modulo = 5;
1482         } else if (range <= 30 * fr) { /* 10-30 seconds */
1483                 mark_interval =  fr; /* show 10 seconds */
1484                 show_seconds = true;
1485                 mark_modulo = 5;
1486         } else if (range <= 60 * fr) { /* 30-60 seconds */
1487                 mark_interval = 5 * fr; /* show 5 seconds */
1488                 show_seconds = true;
1489                 mark_modulo = 3;
1490         } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
1491                 mark_interval = 5 * fr; /* show 5 seconds */
1492                 show_seconds = true;
1493                 mark_modulo = 3;
1494         } else if (range <= 4 * 60 * fr) { /* 4 minutes */
1495                 mark_interval = 10 * fr; /* show 10 seconds */
1496                 show_seconds = true;
1497                 mark_modulo = 30;
1498         } else if (range <= 10 * 60 * fr) { /* 10 minutes */
1499                 mark_interval = 30 * fr; /* show 30 seconds */
1500                 show_seconds = true;
1501                 mark_modulo = 60;
1502         } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
1503                 mark_interval =  60 * fr; /* show 1 minute */
1504                 show_minutes = true;
1505                 mark_modulo = 5;
1506         } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
1507                 mark_interval = 2 * 60 * fr; /* show 2 minutes */
1508                 show_minutes = true;
1509                 mark_modulo = 10;
1510         } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
1511                 mark_interval = 5 * 60 * fr; /* show 10 minutes */
1512                 show_minutes = true;
1513                 mark_modulo = 30;
1514         } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
1515                 mark_interval = 20 * 60 * fr; /* show 20 minutes */
1516                 show_minutes = true;
1517                 mark_modulo = 60;
1518         } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
1519                 mark_interval =  60 * 60 * fr; /* show 60 minutes */
1520                 show_hours = true;
1521                 mark_modulo = 2;
1522         } else {
1523
1524                 /* not possible if jack_nframes_t is a 32 bit quantity */
1525
1526                 mark_interval = 4 * 60 * 60 * fr; /* show 4 hrs */
1527         }
1528
1529         nmarks = 1 + (range / mark_interval);
1530         *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
1531         pos = ((lower + (mark_interval/2))/mark_interval) * mark_interval;
1532
1533         if (show_seconds) {
1534                 for (n = 0; n < nmarks; pos += mark_interval, ++n) {
1535                         sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
1536                         if (secs % mark_modulo == 0) {
1537                                 if (secs == 0) {
1538                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1539                                 } else {
1540                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1541                                 }
1542                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1543                         } else {
1544                                 snprintf (buf, sizeof(buf), " ");
1545                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1546                         }
1547                         (*marks)[n].label = g_strdup (buf);
1548                         (*marks)[n].position = pos;
1549                 }
1550         } else if (show_minutes) {
1551                 for (n = 0; n < nmarks; pos += mark_interval, ++n) {
1552                         sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
1553                         if (mins % mark_modulo == 0) {
1554                                 if (mins == 0) {
1555                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1556                                 } else {
1557                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1558                                 }
1559                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1560                         } else {
1561                                 snprintf (buf, sizeof(buf), " ");
1562                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1563                         }
1564                         (*marks)[n].label = g_strdup (buf);
1565                         (*marks)[n].position = pos;
1566                 }
1567         } else if (show_hours) {
1568                  for (n = 0; n < nmarks; pos += mark_interval, ++n) {
1569                         sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
1570                         if (hrs % mark_modulo == 0) {
1571                                 (*marks)[n].style = GtkCustomRulerMarkMajor;
1572                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1573                         } else {
1574                                 snprintf (buf, sizeof(buf), " ");
1575                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1576                         }
1577                         (*marks)[n].label = g_strdup (buf);
1578                         (*marks)[n].position = pos;
1579                 }
1580         } else {
1581                 for (n = 0; n < nmarks; pos += mark_interval, ++n) {
1582                         sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
1583                         if (millisecs % mark_modulo == 0) {
1584                                 if (millisecs == 0) {
1585                                         (*marks)[n].style = GtkCustomRulerMarkMajor;
1586                                 } else {
1587                                         (*marks)[n].style = GtkCustomRulerMarkMinor;
1588                                 }
1589                                 snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
1590                         } else {
1591                                 snprintf (buf, sizeof(buf), " ");
1592                                 (*marks)[n].style = GtkCustomRulerMarkMicro;
1593                         }
1594                         (*marks)[n].label = g_strdup (buf);
1595                         (*marks)[n].position = pos;
1596                 }
1597         }
1598
1599         return nmarks;
1600 }