Logo Search packages:      
Sourcecode: ardour version File versions  Download package

editor_rulers.cc

/*
    Copyright (C) 2000 Paul Davis 

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#include <cstdio> // for sprintf, grrr 
#include <cmath>

#include <string>

#include <gtk/gtkaction.h>

#include <ardour/tempo.h>
#include <ardour/profile.h>
#include <gtkmm2ext/gtk_ui.h>

#include "editor.h"
#include "editing.h"
#include "actions.h"
#include "gtk-custom-hruler.h"
#include "gui_thread.h"

#include "i18n.h"

using namespace sigc;
using namespace ARDOUR;
using namespace PBD;
using namespace Gtk;
using namespace Editing;

Editor *Editor::ruler_editor;

/* the order here must match the "metric" enums in editor.h */

GtkCustomMetric Editor::ruler_metrics[4] = {
      {1, Editor::_metric_get_smpte },
      {1, Editor::_metric_get_bbt },
      {1, Editor::_metric_get_frames },
      {1, Editor::_metric_get_minsec }
};

void
Editor::initialize_rulers ()
{
      ruler_editor = this;
      ruler_grabbed_widget = 0;
      
      _ruler_separator = new Gtk::HSeparator();
      _ruler_separator->set_size_request(-1, 2);
      _ruler_separator->show();

      _minsec_ruler = gtk_custom_hruler_new ();
      minsec_ruler = Glib::wrap (_minsec_ruler);
      minsec_ruler->set_name ("MinSecRuler");
      minsec_ruler->set_size_request (-1, (int)timebar_height);
      gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_minsec_ruler), &ruler_metrics[ruler_metric_minsec]);
      minsec_ruler->hide ();
      minsec_ruler->set_no_show_all();

      _smpte_ruler = gtk_custom_hruler_new ();
      smpte_ruler = Glib::wrap (_smpte_ruler);
      smpte_ruler->set_name ("SMPTERuler");
      smpte_ruler->set_size_request (-1, (int)timebar_height);
      gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_smpte_ruler), &ruler_metrics[ruler_metric_smpte]);
      smpte_ruler->hide ();
      smpte_ruler->set_no_show_all();

      _frames_ruler = gtk_custom_hruler_new ();
      frames_ruler = Glib::wrap (_frames_ruler);
      frames_ruler->set_name ("FramesRuler");
      frames_ruler->set_size_request (-1, (int)timebar_height);
      gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_frames_ruler), &ruler_metrics[ruler_metric_frames]);
      frames_ruler->hide ();
      frames_ruler->set_no_show_all();

      _bbt_ruler = gtk_custom_hruler_new ();
      bbt_ruler = Glib::wrap (_bbt_ruler);
      bbt_ruler->set_name ("BBTRuler");
      bbt_ruler->set_size_request (-1, (int)timebar_height);
      gtk_custom_ruler_set_metric (GTK_CUSTOM_RULER(_bbt_ruler), &ruler_metrics[ruler_metric_bbt]);
      bbt_ruler->hide ();
      bbt_ruler->set_no_show_all();

      using namespace Box_Helpers;
      BoxList & ruler_lab_children =  ruler_label_vbox.children();
      BoxList & ruler_children =  time_canvas_vbox.children();
      BoxList & lab_children =  time_button_vbox.children();

      BoxList::iterator canvaspos = ruler_children.begin();

      lab_children.push_back (Element(meter_label, PACK_SHRINK, PACK_START));
      lab_children.push_back (Element(tempo_label, PACK_SHRINK, PACK_START));
      lab_children.push_back (Element(range_mark_label, PACK_SHRINK, PACK_START));
      lab_children.push_back (Element(transport_mark_label, PACK_SHRINK, PACK_START));
      lab_children.push_back (Element(cd_mark_label, PACK_SHRINK, PACK_START));
      lab_children.push_back (Element(mark_label, PACK_SHRINK, PACK_START));

      ruler_lab_children.push_back (Element(minsec_label, PACK_SHRINK, PACK_START));
      ruler_children.insert (canvaspos, Element(*minsec_ruler, PACK_SHRINK, PACK_START));
      ruler_lab_children.push_back (Element(smpte_label, PACK_SHRINK, PACK_START));
      ruler_children.insert (canvaspos, Element(*smpte_ruler, PACK_SHRINK, PACK_START));
      ruler_lab_children.push_back (Element(frame_label, PACK_SHRINK, PACK_START));
      ruler_children.insert (canvaspos, Element(*frames_ruler, PACK_SHRINK, PACK_START));
      ruler_lab_children.push_back (Element(bbt_label, PACK_SHRINK, PACK_START));
      ruler_children.insert (canvaspos, Element(*bbt_ruler, PACK_SHRINK, PACK_START));

      smpte_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
      bbt_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
      frames_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);
      minsec_ruler->add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::SCROLL_MASK);

      smpte_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
      bbt_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
      frames_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));
      minsec_ruler->signal_button_release_event().connect (mem_fun(*this, &Editor::ruler_button_release));

      smpte_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
      bbt_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
      frames_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
      minsec_ruler->signal_button_press_event().connect (mem_fun(*this, &Editor::ruler_button_press));
      
      smpte_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
      bbt_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
      frames_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));
      minsec_ruler->signal_motion_notify_event().connect (mem_fun(*this, &Editor::ruler_mouse_motion));

      smpte_ruler->signal_scroll_event().connect (mem_fun(*this, &Editor::ruler_scroll));
      bbt_ruler->signal_scroll_event().connect (mem_fun(*this, &Editor::ruler_scroll));
      frames_ruler->signal_scroll_event().connect (mem_fun(*this, &Editor::ruler_scroll));
      minsec_ruler->signal_scroll_event().connect (mem_fun(*this, &Editor::ruler_scroll));

      visible_timebars = 0; /*this will be changed below */
      ruler_pressed_button = 0;
      canvas_timebars_vsize = 0;
}

bool
Editor::ruler_scroll (GdkEventScroll* event)
{
      nframes64_t xdelta;
      int direction = event->direction;
      bool handled = false;

      switch (direction) {
      case GDK_SCROLL_UP:
            temporal_zoom_step (true);
            handled = true;
            break;

      case GDK_SCROLL_DOWN:
            temporal_zoom_step (false);
            handled = true;
            break;

      case GDK_SCROLL_LEFT:
            xdelta = (current_page_frames() / 2);
            if (leftmost_frame > xdelta) {
                  reset_x_origin (leftmost_frame - xdelta);
            } else {
                  reset_x_origin (0);
            }
            handled = true;
            break;

      case GDK_SCROLL_RIGHT:
            xdelta = (current_page_frames() / 2);
            if (max_frames - xdelta > leftmost_frame) {
                  reset_x_origin (leftmost_frame + xdelta);
            } else {
                  reset_x_origin (max_frames - current_page_frames());
            }
            handled = true;
            break;

      default:
            /* what? */
            break;
      }

      return handled;
}


gint
Editor::ruler_button_press (GdkEventButton* ev)
{
      if (session == 0) {
            return FALSE;
      }

      ruler_pressed_button = ev->button;

      // jlc: grab ev->window ?
      //Gtk::Main::grab_add (*minsec_ruler);
      Widget * grab_widget = 0;

      if (smpte_ruler->is_realized() && ev->window == smpte_ruler->get_window()->gobj()) grab_widget = smpte_ruler;
      else if (bbt_ruler->is_realized() && ev->window == bbt_ruler->get_window()->gobj()) grab_widget = bbt_ruler;
      else if (frames_ruler->is_realized() && ev->window == frames_ruler->get_window()->gobj()) grab_widget = frames_ruler;
      else if (minsec_ruler->is_realized() && ev->window == minsec_ruler->get_window()->gobj()) grab_widget = minsec_ruler;

      if (grab_widget) {
            grab_widget->add_modal_grab ();
            ruler_grabbed_widget = grab_widget;
      }

      gint x,y;
      Gdk::ModifierType state;

      /* need to use the correct x,y, the event lies */
      time_canvas_event_box.get_window()->get_pointer (x, y, state);

      nframes64_t where = leftmost_frame + pixel_to_frame (x);

      switch (ev->button) {
      case 1:
            // Since we will locate the playhead on button release, cancel any running
            // auditions.
            if (session->is_auditioning()) {
                  session->cancel_audition ();
            }
            /* playhead cursor */
            snap_to (where);
            playhead_cursor->set_position (where);
            _dragging_playhead = true;
            break;

      case 2:
            /* edit point */
            snap_to (where);
            break;

      default:
            break;
      }

      return TRUE;
}

gint
Editor::ruler_button_release (GdkEventButton* ev)
{
      gint x,y;
      Gdk::ModifierType state;

      /* need to use the correct x,y, the event lies */
      time_canvas_event_box.get_window()->get_pointer (x, y, state);

      ruler_pressed_button = 0;
      
      if (session == 0) {
            return FALSE;
      }

      stop_canvas_autoscroll();
      
      nframes64_t where = leftmost_frame + pixel_to_frame (x);

      switch (ev->button) {
      case 1:
            /* transport playhead */
            _dragging_playhead = false;
            snap_to (where);
            session->request_locate (where, session->transport_rolling());
            break;

      case 2:
            /* edit point */
            snap_to (where);
            break;

      case 3:
            /* popup menu */
            snap_to (where);
            popup_ruler_menu (where);
            
            break;
      default:
            break;
      }


      if (ruler_grabbed_widget) {
            ruler_grabbed_widget->remove_modal_grab();
            ruler_grabbed_widget = 0;
      }

      return TRUE;
}

gint
Editor::ruler_label_button_release (GdkEventButton* ev)
{
      if (ev->button == 3) {
            Gtk::Menu* m= dynamic_cast<Gtk::Menu*> (ActionManager::get_widget (X_("/RulerMenuPopup")));
            if (m) {
                  m->popup (1, ev->time);
            }
      }
      
      return TRUE;
}


gint
Editor::ruler_mouse_motion (GdkEventMotion* ev)
{
      if (session == 0 || !ruler_pressed_button) {
            return FALSE;
      }
      
            double wcx=0,wcy=0;
      double cx=0,cy=0;

      gint x,y;
      Gdk::ModifierType state;

      /* need to use the correct x,y, the event lies */
      time_canvas_event_box.get_window()->get_pointer (x, y, state);


      track_canvas->c2w (x, y, wcx, wcy);
      track_canvas->w2c (wcx, wcy, cx, cy);
      
      nframes64_t where = leftmost_frame + pixel_to_frame (x);

      /// ripped from maybe_autoscroll, and adapted to work here
      nframes64_t rightmost_frame = leftmost_frame + current_page_frames ();

      if (autoscroll_timeout_tag < 0) {
            if (where > rightmost_frame) {
                  if (rightmost_frame < max_frames) {
                        start_canvas_autoscroll (1, 0);
                  }
            } else if (where <= leftmost_frame) {
                  if (leftmost_frame > 0) {
                        start_canvas_autoscroll (-1, 0);
                  }
            } 
      } else {
            if (where >= leftmost_frame && where < rightmost_frame) {
                  stop_canvas_autoscroll ();
            }
      }
      //////      
      
      snap_to (where);

      Cursor* cursor = 0;
      
      switch (ruler_pressed_button) {
      case 1:
            /* transport playhead */
            cursor = playhead_cursor;
            break;

      case 2:
            /* edit point */
            // EDIT CURSOR XXX do something useful
            break;

      default:
            break;
      }

      if (cursor) {
            cursor->set_position (where);
            
            if (cursor == playhead_cursor) {
                  UpdateAllTransportClocks (cursor->current_frame);
            }
      }
      
      return TRUE;
}


void
Editor::popup_ruler_menu (nframes64_t where, ItemType t)
{
      using namespace Menu_Helpers;

      if (editor_ruler_menu == 0) {
            editor_ruler_menu = new Menu;
            editor_ruler_menu->set_name ("ArdourContextMenu");
      }

      // always build from scratch
      MenuList& ruler_items = editor_ruler_menu->items();
      editor_ruler_menu->set_name ("ArdourContextMenu");
      ruler_items.clear();

      switch (t) {
      case MarkerBarItem:
            ruler_items.push_back (MenuElem (_("New location marker"), bind ( mem_fun(*this, &Editor::mouse_add_new_marker), where, false, false)));
            ruler_items.push_back (MenuElem (_("Clear all locations"), mem_fun(*this, &Editor::clear_markers)));
            ruler_items.push_back (MenuElem (_("Unhide locations"), mem_fun(*this, &Editor::unhide_markers)));
            ruler_items.push_back (SeparatorElem ());
            break;
      case RangeMarkerBarItem:
            //ruler_items.push_back (MenuElem (_("New Range")));
            ruler_items.push_back (MenuElem (_("Clear all ranges"), mem_fun(*this, &Editor::clear_ranges)));
            ruler_items.push_back (MenuElem (_("Unhide ranges"), mem_fun(*this, &Editor::unhide_ranges)));
            ruler_items.push_back (SeparatorElem ());

            break;
      case TransportMarkerBarItem:

            break;
      
      case CdMarkerBarItem:
            // TODO
            ruler_items.push_back (MenuElem (_("Clear all locations"), mem_fun(*this, &Editor::clear_markers)));
            ruler_items.push_back (MenuElem (_("Unhide locations"), mem_fun(*this, &Editor::unhide_markers)));
            ruler_items.push_back (MenuElem (_("New CD track marker"), bind ( mem_fun(*this, &Editor::mouse_add_new_marker), where, true, false)));
            break;
            
      
      case TempoBarItem:
            ruler_items.push_back (MenuElem (_("New Tempo"), bind ( mem_fun(*this, &Editor::mouse_add_new_tempo_event), where)));
            ruler_items.push_back (MenuElem (_("Clear tempo")));
            ruler_items.push_back (SeparatorElem ());
            break;

      case MeterBarItem:
            ruler_items.push_back (MenuElem (_("New Meter"), bind ( mem_fun(*this, &Editor::mouse_add_new_meter_event), where)));
            ruler_items.push_back (MenuElem (_("Clear meter")));
            ruler_items.push_back (SeparatorElem ());
            break;

      default:
            break;
      }

      Glib::RefPtr<Action> action;

      action = ActionManager::get_action ("Rulers", "toggle-minsec-ruler");
      if (action) {
            ruler_items.push_back (MenuElem (*action->create_menu_item()));
      }
      if (!Profile->get_sae()) {
            action = ActionManager::get_action ("Rulers", "toggle-timecode-ruler");
            if (action) {
                  ruler_items.push_back (MenuElem (*action->create_menu_item()));
            }
      }
      action = ActionManager::get_action ("Rulers", "toggle-samples-ruler");
      if (action) {
            ruler_items.push_back (MenuElem (*action->create_menu_item()));
      }
      action = ActionManager::get_action ("Rulers", "toggle-bbt-ruler");
      if (action) {
            ruler_items.push_back (MenuElem (*action->create_menu_item()));
      }
      action = ActionManager::get_action ("Rulers", "toggle-meter-ruler");
      if (action) {
            ruler_items.push_back (MenuElem (*action->create_menu_item()));
      }
      action = ActionManager::get_action ("Rulers", "toggle-tempo-ruler");
      if (action) {
            ruler_items.push_back (MenuElem (*action->create_menu_item()));
      }
      if (!Profile->get_sae()) {
            action = ActionManager::get_action ("Rulers", "toggle-range-ruler");
            if (action) {
                  ruler_items.push_back (MenuElem (*action->create_menu_item()));
            }
      }
      action = ActionManager::get_action ("Rulers", "toggle-loop-punch-ruler");
      if (action) {
            ruler_items.push_back (MenuElem (*action->create_menu_item()));
      }
      action = ActionManager::get_action ("Rulers", "toggle-cd-marker-ruler");
      if (action) {
            ruler_items.push_back (MenuElem (*action->create_menu_item()));
      }
      action = ActionManager::get_action ("Rulers", "toggle-marker-ruler");
      if (action) {
            ruler_items.push_back (MenuElem (*action->create_menu_item()));
      }

        editor_ruler_menu->popup (1, gtk_get_current_event_time());

      no_ruler_shown_update = false;
}

void
Editor::store_ruler_visibility ()
{
      XMLNode* node = new XMLNode(X_("RulerVisibility"));

      node->add_property (X_("smpte"), ruler_timecode_action->get_active() ? "yes": "no");
      node->add_property (X_("bbt"), ruler_bbt_action->get_active() ? "yes": "no");
      node->add_property (X_("frames"), ruler_samples_action->get_active() ? "yes": "no");
      node->add_property (X_("minsec"), ruler_minsec_action->get_active() ? "yes": "no");
      node->add_property (X_("tempo"), ruler_tempo_action->get_active() ? "yes": "no");
      node->add_property (X_("meter"), ruler_meter_action->get_active() ? "yes": "no");
      node->add_property (X_("marker"), ruler_marker_action->get_active() ? "yes": "no");
      node->add_property (X_("rangemarker"), ruler_range_action->get_active() ? "yes": "no");
      node->add_property (X_("transportmarker"), ruler_loop_punch_action->get_active() ? "yes": "no");
      node->add_property (X_("cdmarker"), ruler_cd_marker_action->get_active() ? "yes": "no");

      session->add_extra_xml (*node);
      session->set_dirty ();
}

void 
Editor::restore_ruler_visibility ()
{
      XMLProperty* prop;
      XMLNode * node = session->extra_xml (X_("RulerVisibility"));

      no_ruler_shown_update = true;

      if (node) {
            if ((prop = node->property ("smpte")) != 0) {
                  if (string_is_affirmative (prop->value())) {
                        ruler_timecode_action->set_active (true);
                  } else {
                        ruler_timecode_action->set_active (false);
                  }
            }
            if ((prop = node->property ("bbt")) != 0) {
                  if (string_is_affirmative (prop->value())) {
                        ruler_bbt_action->set_active (true);
                  } else {
                        ruler_bbt_action->set_active (false);
                  }
            }
            if ((prop = node->property ("frames")) != 0) {
                  if (string_is_affirmative (prop->value())) {
                        ruler_samples_action->set_active (true);
                  } else {
                        ruler_samples_action->set_active (false);
                  }
            }
            if ((prop = node->property ("minsec")) != 0) {
                  if (string_is_affirmative (prop->value())) {
                        ruler_minsec_action->set_active (true);
                  } else {
                        ruler_minsec_action->set_active (false);
                  }
            }
            if ((prop = node->property ("tempo")) != 0) {
                  if (string_is_affirmative (prop->value())) {
                        ruler_tempo_action->set_active (true);
                  } else {
                        ruler_tempo_action->set_active (false);
                  }
            }
            if ((prop = node->property ("meter")) != 0) {
                  if (string_is_affirmative (prop->value())) {
                        ruler_meter_action->set_active (true);
                  } else {
                        ruler_meter_action->set_active (false);
                  }
            }
            if ((prop = node->property ("marker")) != 0) {
                  if (string_is_affirmative (prop->value())) {
                        ruler_marker_action->set_active (true);
                  } else {
                        ruler_marker_action->set_active (false);
                  }
            }
            if ((prop = node->property ("rangemarker")) != 0) {
                  if (string_is_affirmative (prop->value())) {
                        ruler_range_action->set_active (true);
                  } else {
                        ruler_range_action->set_active (false);
                  }
            }

            if ((prop = node->property ("transportmarker")) != 0) {
                  if (string_is_affirmative (prop->value())) {
                        ruler_loop_punch_action->set_active (true);
                  } else {
                        ruler_loop_punch_action->set_active (false);
                  }
            }

            if ((prop = node->property ("cdmarker")) != 0) {
                  if (string_is_affirmative (prop->value())) {
                        ruler_cd_marker_action->set_active (true);
                  } else {
                        ruler_cd_marker_action->set_active (false);
                  }

            } else {
                  // this session doesn't yet know about the cdmarker ruler
                  // as a benefit to the user who doesn't know the feature exists, show the ruler if 
                  // any cd marks exist
                  ruler_cd_marker_action->set_active (false);
                  const Locations::LocationList & locs = session->locations()->list();
                  for (Locations::LocationList::const_iterator i = locs.begin(); i != locs.end(); ++i) {
                        if ((*i)->is_cd_marker()) {
                              ruler_cd_marker_action->set_active (true);
                              break;
                        }
                  }
            }

      }

      no_ruler_shown_update = false;
      update_ruler_visibility ();
}

void
Editor::update_ruler_visibility ()
{
      int visible_rulers = 0;

      if (no_ruler_shown_update) {
            return;
      }

      visible_timebars = 0;

      if (ruler_minsec_action->get_active()) {
            visible_rulers++;
            minsec_label.show ();
            minsec_ruler->show ();
      } else {
            minsec_label.hide ();
            minsec_ruler->hide ();
      }

      if (ruler_timecode_action->get_active()) {
            visible_rulers++;
            smpte_label.show ();
            smpte_ruler->show ();
      } else {
            smpte_label.hide ();
            smpte_ruler->hide ();
      }

      if (ruler_samples_action->get_active()) {
            visible_rulers++;
            frame_label.show ();
            frames_ruler->show ();
      } else {
            frame_label.hide ();
            frames_ruler->hide ();
      }

      if (ruler_bbt_action->get_active()) {
            visible_rulers++;
            bbt_label.show ();
            bbt_ruler->show ();
      } else {
            bbt_label.hide ();
            bbt_ruler->hide ();
      }

      double tbpos = 0.0;
      double tbgpos = 0.0;
      double old_unit_pos;

#ifdef GTKOSX
      /* gtk update probs require this (damn) */
      meter_label.hide();
      tempo_label.hide();
      range_mark_label.hide();
      transport_mark_label.hide();
      cd_mark_label.hide();
      mark_label.hide();
#endif
      if (ruler_meter_action->get_active()) {
            old_unit_pos = meter_group->property_y();
            if (tbpos != old_unit_pos) {
                  meter_group->move ( 0.0, tbpos - old_unit_pos);
            }
            old_unit_pos = meter_bar_group->property_y();
            if (tbgpos != old_unit_pos) {
                  meter_bar_group->move ( 0.0, tbgpos - old_unit_pos);
            }     
            meter_bar_group->show();
            meter_group->show();
            meter_label.show();
            tbpos += timebar_height;
            tbgpos += timebar_height;
            visible_timebars++;
      } else {
            meter_bar_group->hide();
            meter_group->hide();
            meter_label.hide();
      }
      
      if (ruler_tempo_action->get_active()) {
            old_unit_pos = tempo_group->property_y();
            if (tbpos != old_unit_pos) {
                  tempo_group->move(0.0, tbpos - old_unit_pos);
            }
            old_unit_pos = tempo_bar_group->property_y();
            if (tbgpos != old_unit_pos) {
                  tempo_bar_group->move ( 0.0, tbgpos - old_unit_pos);
            }
            tempo_bar_group->show();
            tempo_group->show();
            tempo_label.show();
            tbpos += timebar_height;
            tbgpos += timebar_height;
            visible_timebars++;
      } else {
            tempo_bar_group->hide();
            tempo_group->hide();
            tempo_label.hide();
      }
      
      if (!Profile->get_sae() && ruler_range_action->get_active()) {
            old_unit_pos = range_marker_group->property_y();
            if (tbpos != old_unit_pos) {
                  range_marker_group->move (0.0, tbpos - old_unit_pos);
            }
            old_unit_pos = range_marker_bar_group->property_y();
            if (tbgpos != old_unit_pos) {
                  range_marker_bar_group->move (0.0, tbgpos - old_unit_pos);
            }
            range_marker_bar_group->show();
            range_marker_group->show();
            range_mark_label.show();
            tbpos += timebar_height;
            tbgpos += timebar_height;
            visible_timebars++;
      } else {
            range_marker_bar_group->hide();
            range_marker_group->hide();
            range_mark_label.hide();
      }

      if (ruler_loop_punch_action->get_active()) {
            old_unit_pos = transport_marker_group->property_y();
            if (tbpos != old_unit_pos) {
                  transport_marker_group->move ( 0.0, tbpos - old_unit_pos);
            }
            old_unit_pos = transport_marker_bar_group->property_y();
            if (tbgpos != old_unit_pos) {
                  transport_marker_bar_group->move ( 0.0, tbgpos - old_unit_pos);
            }
            transport_marker_bar_group->show();
            transport_marker_group->show();
            transport_mark_label.show();
            tbpos += timebar_height;
            tbgpos += timebar_height;
            visible_timebars++;
      } else {
            transport_marker_bar_group->hide();
            transport_marker_group->hide();
            transport_mark_label.hide();
      }

      if (ruler_cd_marker_action->get_active()) {
            old_unit_pos = cd_marker_group->property_y();
            if (tbpos != old_unit_pos) {
                  cd_marker_group->move (0.0, tbpos - old_unit_pos);
            }
            old_unit_pos = cd_marker_bar_group->property_y();
            if (tbgpos != old_unit_pos) {
                  cd_marker_bar_group->move (0.0, tbgpos - old_unit_pos);
            }
            cd_marker_bar_group->show();
            cd_marker_group->show();
            cd_mark_label.show();
            tbpos += timebar_height;
            tbgpos += timebar_height;
            visible_timebars++;
            // make sure all cd markers show up in their respective places
            update_cd_marker_display();
      } else {
            cd_marker_bar_group->hide();
            cd_marker_group->hide();
            cd_mark_label.hide();
            // make sure all cd markers show up in their respective places
            update_cd_marker_display();
      }
      
      if (ruler_marker_action->get_active()) {
            old_unit_pos = marker_group->property_y();
            if (tbpos != old_unit_pos) {
                  marker_group->move ( 0.0, tbpos - old_unit_pos);
            }
            old_unit_pos = marker_bar_group->property_y();
            if (tbgpos != old_unit_pos) {
                  marker_bar_group->move ( 0.0, tbgpos - old_unit_pos);
            }
            marker_bar_group->show();
            marker_group->show();
            mark_label.show();
            tbpos += timebar_height;
            tbgpos += timebar_height;
            visible_timebars++;
      } else {
            marker_bar_group->hide();
            marker_group->hide();
            mark_label.hide();
      }

      gdouble old_canvas_timebars_vsize = canvas_timebars_vsize;
      canvas_timebars_vsize = (timebar_height * visible_timebars) - 1;
      gdouble vertical_pos_delta = canvas_timebars_vsize - old_canvas_timebars_vsize;
      vertical_adjustment.set_upper(vertical_adjustment.get_upper() + vertical_pos_delta);
      full_canvas_height += vertical_pos_delta;

      if (vertical_adjustment.get_value() != 0 && (vertical_adjustment.get_value() + canvas_height >= full_canvas_height)) {
            /*if we're at the bottom of the canvas, don't move the _trackview_group*/
            vertical_adjustment.set_value (full_canvas_height - canvas_height + 1);
      } else {
            _trackview_group->property_y () = - get_trackview_group_vertical_offset ();
            _background_group->property_y () = - get_trackview_group_vertical_offset ();
            _trackview_group->move (0, 0);
            _background_group->move (0, 0);
            last_trackview_group_vertical_offset = get_trackview_group_vertical_offset ();
      }
      
      gdouble bottom_track_pos = vertical_adjustment.get_value() + canvas_height - canvas_timebars_vsize;
      if (trackview_by_y_position(bottom_track_pos) != 0) {
            trackview_by_y_position(bottom_track_pos)->clip_to_viewport ();
      }

      ruler_label_vbox.set_size_request (-1, (int)(timebar_height * visible_rulers));
      time_canvas_vbox.set_size_request (-1,-1);

      update_fixed_rulers();
      redisplay_tempo (false);
}

void
Editor::update_just_smpte ()
{
      ENSURE_GUI_THREAD(mem_fun(*this, &Editor::update_just_smpte));
      
      if (session == 0) {
            return;
      }

      nframes64_t rightmost_frame = leftmost_frame + current_page_frames();

      if (ruler_timecode_action->get_active()) {
            gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_smpte_ruler), leftmost_frame, rightmost_frame,
                                  leftmost_frame, session->current_end_frame());
      }
}

void
Editor::update_fixed_rulers ()
{
      nframes64_t rightmost_frame;

      if (session == 0) {
            return;
      }

      ruler_metrics[ruler_metric_smpte].units_per_pixel = frames_per_unit;
      ruler_metrics[ruler_metric_frames].units_per_pixel = frames_per_unit;
      ruler_metrics[ruler_metric_minsec].units_per_pixel = frames_per_unit;

      rightmost_frame = leftmost_frame + current_page_frames ();

      /* these force a redraw, which in turn will force execution of the metric callbacks
         to compute the relevant ticks to display.
      */

      if (ruler_timecode_action->get_active()) {
            gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_smpte_ruler), leftmost_frame, rightmost_frame,
                                  leftmost_frame, session->current_end_frame());
      }
      
      if (ruler_samples_action->get_active()) {
            gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_frames_ruler), leftmost_frame, rightmost_frame,
                                  leftmost_frame, session->current_end_frame());
      }
      
      if (ruler_minsec_action->get_active()) {
            gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_minsec_ruler), leftmost_frame, rightmost_frame,
                                  leftmost_frame, session->current_end_frame());
      }
}           

void
Editor::update_tempo_based_rulers ()
{
      if (session == 0) {
            return;
      }

      ruler_metrics[ruler_metric_bbt].units_per_pixel = frames_per_unit;

      if (ruler_bbt_action->get_active()) {
            gtk_custom_ruler_set_range (GTK_CUSTOM_RULER(_bbt_ruler), leftmost_frame, leftmost_frame+current_page_frames(),
                                  leftmost_frame, session->current_end_frame());
      }
}

/* Mark generation */

gint
Editor::_metric_get_smpte (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
{
      return ruler_editor->metric_get_smpte (marks, lower, upper, maxchars);
}

gint
Editor::_metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
{
      return ruler_editor->metric_get_bbt (marks, lower, upper, maxchars);
}

gint
Editor::_metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
{
      return ruler_editor->metric_get_frames (marks, lower, upper, maxchars);
}

gint
Editor::_metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
{
      return ruler_editor->metric_get_minsec (marks, lower, upper, maxchars);
}

gint
Editor::metric_get_smpte (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
{
      nframes_t pos;
      nframes64_t range;
      nframes64_t spacer;
      nframes64_t fr;
      SMPTE::Time smpte;
      gchar buf[16];
      gint nmarks = 0;
      gint n;
      bool show_bits = false;
      bool show_frames = false;
      bool show_seconds = false;
      bool show_minutes = false;
      bool show_hours = false;
      int mark_modulo;

      if (session == 0) {
            return 0;
      }

      fr = session->frame_rate();

      if (lower > (spacer = (nframes64_t)(128 * Editor::get_current_zoom ()))) {
            lower = lower - spacer;
      } else {
            lower = 0;
      }
      upper = upper + spacer;
      range = (nframes64_t) floor (upper - lower);

      if (range < (2 * session->frames_per_smpte_frame())) { /* 0 - 2 frames */
            show_bits = true;
            mark_modulo = 20;
            nmarks = 1 + (2 * Config->get_subframes_per_frame());
      } else if (range <= (fr / 4)) { /* 2 frames - 0.250 second */
            show_frames = true;
            mark_modulo = 1;
            nmarks = 1 + (range / (nframes64_t)session->frames_per_smpte_frame());
      } else if (range <= (fr / 2)) { /* 0.25-0.5 second */
            show_frames = true;
            mark_modulo = 2;
            nmarks = 1 + (range / (nframes64_t)session->frames_per_smpte_frame());
      } else if (range <= fr) { /* 0.5-1 second */
            show_frames = true;
            mark_modulo = 5;
            nmarks = 1 + (range / (nframes64_t)session->frames_per_smpte_frame());
      } else if (range <= 2 * fr) { /* 1-2 seconds */
            show_frames = true;
            mark_modulo = 10;
            nmarks = 1 + (range / (nframes64_t)session->frames_per_smpte_frame());
      } else if (range <= 8 * fr) { /* 2-8 seconds */
            show_seconds = true;
            mark_modulo = 1;
            nmarks = 1 + (range / fr);
      } else if (range <= 16 * fr) { /* 8-16 seconds */
            show_seconds = true;
            mark_modulo = 2;
            nmarks = 1 + (range / fr);
      } else if (range <= 30 * fr) { /* 16-30 seconds */
            show_seconds = true;
            mark_modulo = 5;
            nmarks = 1 + (range / fr);
      } else if (range <= 60 * fr) { /* 30-60 seconds */
            show_seconds = true;
            mark_modulo = 5;
            nmarks = 1 + (range / fr);
      } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
            show_seconds = true;
            mark_modulo = 20;
            nmarks = 1 + (range / fr);
      } else if (range <= 4 * 60 * fr) { /* 2-4 minutes */
            show_seconds = true;
            mark_modulo = 30;
            nmarks = 1 + (range / fr);
      } else if (range <= 10 * 60 * fr) { /* 4-10 minutes */
            show_minutes = true;
            mark_modulo = 2;
            nmarks = 1 + 10;
      } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
            show_minutes = true;
            mark_modulo = 5;
            nmarks = 1 + 30;
      } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
            show_minutes = true;
            mark_modulo = 10;
            nmarks = 1 + 60;
      } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
            show_minutes = true;
            mark_modulo = 30;
            nmarks = 1 + (60 * 4);
      } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
            show_hours = true;
            mark_modulo = 1;
            nmarks = 1 + 8;
      } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
            show_hours = true;
            mark_modulo = 1;
            nmarks = 1 + 24;
      } else {
    
            /* not possible if nframes64_t is a 32 bit quantity */
    
            show_hours = true;
            mark_modulo = 4;
            nmarks = 1 + 24;
      }
  
      pos = (nframes_t) floor (lower);
      
      *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);  
      
      if (show_bits) {
            // Find smpte time of this sample (pos) with subframe accuracy
            session->sample_to_smpte(pos, smpte, true /* use_offset */, true /* use_subframes */ );
    
            for (n = 0; n < nmarks; n++) {
                  session->smpte_to_sample(smpte, pos, true /* use_offset */, true /* use_subframes */ );
                  if ((smpte.subframes % mark_modulo) == 0) {
                        if (smpte.subframes == 0) {
                              (*marks)[n].style = GtkCustomRulerMarkMajor;
                              snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
                        } else {
                              (*marks)[n].style = GtkCustomRulerMarkMinor;
                              snprintf (buf, sizeof(buf), ".%02u", smpte.subframes);
                        }
                  } else {
                        snprintf (buf, sizeof(buf)," ");
                        (*marks)[n].style = GtkCustomRulerMarkMicro;
        
                  }
                  (*marks)[n].label = g_strdup (buf);
                  (*marks)[n].position = pos;

                  // Increment subframes by one
                  SMPTE::increment_subframes( smpte );
            }
      } else if (show_seconds) {
            // Find smpte time of this sample (pos)
            session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
            // Go to next whole second down
            SMPTE::seconds_floor( smpte );

            for (n = 0; n < nmarks; n++) {
                  session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
                  if ((smpte.seconds % mark_modulo) == 0) {
                        if (smpte.seconds == 0) {
                              (*marks)[n].style = GtkCustomRulerMarkMajor;
                              (*marks)[n].position = pos;
                        } else {
                              (*marks)[n].style = GtkCustomRulerMarkMinor;
                              (*marks)[n].position = pos;
                        }
                        snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
                  } else {
                        snprintf (buf, sizeof(buf)," ");
                        (*marks)[n].style = GtkCustomRulerMarkMicro;
                        (*marks)[n].position = pos;
        
                  }
                  (*marks)[n].label = g_strdup (buf);
                  SMPTE::increment_seconds( smpte );
            }
      } else if (show_minutes) {
            // Find smpte time of this sample (pos)
            session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
            // Go to next whole minute down
            SMPTE::minutes_floor( smpte );

            for (n = 0; n < nmarks; n++) {
                  session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
                  if ((smpte.minutes % mark_modulo) == 0) {
                        if (smpte.minutes == 0) {
                              (*marks)[n].style = GtkCustomRulerMarkMajor;
                        } else {
                              (*marks)[n].style = GtkCustomRulerMarkMinor;
                        }
                        snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
                  } else {
                        snprintf (buf, sizeof(buf)," ");
                        (*marks)[n].style = GtkCustomRulerMarkMicro;
        
                  }
                  (*marks)[n].label = g_strdup (buf);
                  (*marks)[n].position = pos;
                  SMPTE::increment_minutes( smpte );
            }
      } else if (show_hours) {
            // Find smpte time of this sample (pos)
            session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
            // Go to next whole hour down
            SMPTE::hours_floor( smpte );

            for (n = 0; n < nmarks; n++) {
                  session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
                  if ((smpte.hours % mark_modulo) == 0) {
                        (*marks)[n].style = GtkCustomRulerMarkMajor;
                        snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
                  } else {
                        snprintf (buf, sizeof(buf)," ");
                        (*marks)[n].style = GtkCustomRulerMarkMicro;
        
                  }
                  (*marks)[n].label = g_strdup (buf);
                  (*marks)[n].position = pos;

                  SMPTE::increment_hours( smpte );
            }
      } else { // show_frames
            // Find smpte time of this sample (pos)
            session->sample_to_smpte(pos, smpte, true /* use_offset */, false /* use_subframes */ );
            // Go to next whole frame down
            SMPTE::frames_floor( smpte );

            for (n = 0; n < nmarks; n++) {
                  session->smpte_to_sample(smpte, pos, true /* use_offset */, false /* use_subframes */ );
                  if ((smpte.frames % mark_modulo) == 0)  {
                        (*marks)[n].style = GtkCustomRulerMarkMajor;
                        (*marks)[n].position = pos;
                        snprintf (buf, sizeof(buf), "%s%02u:%02u:%02u:%02u", smpte.negative ? "-" : "", smpte.hours, smpte.minutes, smpte.seconds, smpte.frames);
                  } else {
                        snprintf (buf, sizeof(buf)," ");
                        (*marks)[n].style = GtkCustomRulerMarkMicro;
                        (*marks)[n].position = pos;
        
                  }
                  (*marks)[n].label = g_strdup (buf);
                  SMPTE::increment( smpte );
            }
      }
  
      return nmarks;
}


gint
Editor::metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
{
        if (session == 0) {
                return 0;
        }

      TempoMap::BBTPointList::iterator i;

        uint32_t beats = 0;
        uint32_t bars = 0;
        uint32_t desirable_marks;
      uint32_t magic_accent_number = 1;
      gint nmarks;
        char buf[64];
        gint  n = 0;
      nframes64_t pos;
      bool bar_helper_on = true;
       
      BBT_Time next_beat;
      nframes64_t next_beat_pos;

            if ((desirable_marks = maxchars / 7) == 0) {
               return 0;
        }

        /* align the tick marks to whatever we're snapping to... */

      switch (snap_type) {
      case SnapToAThirdBeat:
                bbt_beat_subdivision = 3;
            break;
      case SnapToAQuarterBeat:
                bbt_beat_subdivision = 4;
            break;
      case SnapToAEighthBeat:
                bbt_beat_subdivision = 8;
            magic_accent_number = 2;
            break;
      case SnapToASixteenthBeat:
                bbt_beat_subdivision = 16;
            magic_accent_number = 4;
            break;
      case SnapToAThirtysecondBeat:
                bbt_beat_subdivision = 32;
            magic_accent_number = 8;
            break;
      default:
             bbt_beat_subdivision = 4;
            break;
      }

      if (current_bbt_points == 0 || current_bbt_points->empty()) {
            return 0;
      }

      i = current_bbt_points->end();
      i--;
      bars = (*i).bar - (*current_bbt_points->begin()).bar;
      beats = current_bbt_points->size() - bars;

      /*Only show the bar helper if there aren't many bars on the screen */
      if (bars > 1) {
              bar_helper_on = false;
      }

      if (desirable_marks > (beats / 4)) {

            /* we're in beat land...*/

            uint32_t tick = 0;
            uint32_t skip;
            uint32_t t;
              nframes64_t frame_skip;
            double frame_skip_error;
            double accumulated_error;
            double position_of_helper;
            bool i_am_accented = false;
            bool we_need_ticks = false;
            bool helper_active = false;
      
            position_of_helper = lower + (30 * Editor::get_current_zoom ());

            if (desirable_marks >= (beats)) {
                  nmarks = (beats * bbt_beat_subdivision) + 1;
                  we_need_ticks = true;
            } else {
                  nmarks = beats + 1;
            }

            *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);

            (*marks)[0].label = g_strdup(" ");
            (*marks)[0].position = lower;
            (*marks)[0].style = GtkCustomRulerMarkMicro;
            
            for (n = 1,   i = current_bbt_points->begin(); n < nmarks && i != current_bbt_points->end(); ++i) {

                  if ((*i).frame < lower && (bar_helper_on)) {
                              snprintf (buf, sizeof(buf), "<%" PRIu32 "|%" PRIu32, (*i).bar, (*i).beat);
                              (*marks)[0].label = g_strdup (buf); 
                              helper_active = true;
                  } else {

                    if ((*i).type == TempoMap::Bar)  {
                      if (((*i).frame < position_of_helper) && helper_active) {
                        snprintf (buf, sizeof(buf), " ");
                      } else {
                        snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
                      }
                      (*marks)[n].label = g_strdup (buf);
                      (*marks)[n].position = (*i).frame;
                      (*marks)[n].style = GtkCustomRulerMarkMajor;
                      n++;
                      
                    } else if (((*i).type == TempoMap::Beat) && ((*i).beat > 1)) {
                      ((((*i).frame < position_of_helper) && bar_helper_on) || !we_need_ticks) ?
                        snprintf (buf, sizeof(buf), " ") : snprintf (buf, sizeof(buf), "%" PRIu32, (*i).beat);
                      if (((*i).beat % 2 == 1) || we_need_ticks) {
                        (*marks)[n].style = GtkCustomRulerMarkMinor;
                      } else {
                        (*marks)[n].style = GtkCustomRulerMarkMicro;
                      }
                      (*marks)[n].label =  g_strdup (buf);
                      (*marks)[n].position = (*i).frame;
                      n++;
                    }

                  }


                  /* Add the tick marks */

                  if (we_need_ticks && (*i).type == TempoMap::Beat) {

                          /* Find the next beat */

                          next_beat.beats = (*i).beat;
                        next_beat.bars = (*i).bar;

                        if ((*i).meter->beats_per_bar() > (next_beat.beats + 1)) {
                          next_beat.beats += 1;
                        } else {
                          next_beat.bars += 1;
                          next_beat.beats = 1;
                        }
                        
                        next_beat_pos = session->tempo_map().frame_time(next_beat);

                                frame_skip = (nframes64_t) floor (frame_skip_error = (session->frame_rate() *  60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute()));
                          frame_skip_error -= frame_skip;
                          skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision);

                        pos = (*i).frame + frame_skip;
                        accumulated_error = frame_skip_error;

                        tick = skip;

                        for (t = 0; (tick < Meter::ticks_per_beat) && (n < nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) {

                              if (t % magic_accent_number == (magic_accent_number - 1)) {
                                    i_am_accented = true;
                              }
                              if (Editor::get_current_zoom () > 32) {
                                    snprintf (buf, sizeof(buf), " ");
                              } else if ((Editor::get_current_zoom () > 8) && !i_am_accented) {
                                    snprintf (buf, sizeof(buf), " ");
                              } else  if (bar_helper_on && (pos < position_of_helper)) {
                                    snprintf (buf, sizeof(buf), " ");
                              } else {
                                    snprintf (buf, sizeof(buf), "%" PRIu32, tick);
                              }

                              (*marks)[n].label = g_strdup (buf);

                              /* Error compensation for float to nframes64_t*/
                              accumulated_error += frame_skip_error;
                                if (accumulated_error > 1) {
                                      pos += 1;
                                    accumulated_error -= 1.0f;
                              }

                              (*marks)[n].position = pos;

                              if ((bbt_beat_subdivision > 4) && i_am_accented) {
                                    (*marks)[n].style = GtkCustomRulerMarkMinor;
                              } else {
                                    (*marks)[n].style = GtkCustomRulerMarkMicro;
                              }
                              i_am_accented = false;
                              n++;
                        
                        }
                  }
            }
            return n; //return the actual number of marks made, since we might have skipped some fro fractional time signatures 

       } else {

            /* we're in bar land */

            if (desirable_marks < (bars / 256)) {
                  nmarks = 1;
                  *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
                  snprintf (buf, sizeof(buf), "too many bars... (currently %" PRIu32 ")", bars );
                  (*marks)[0].style = GtkCustomRulerMarkMajor;
                  (*marks)[0].label = g_strdup (buf);
                  (*marks)[0].position = lower;
            } else if (desirable_marks < (uint32_t)(nmarks = (gint) (bars / 64) + 1)) {
                  *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
                  for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < nmarks; i++) {
                        if ((*i).type == TempoMap::Bar)  {
                              if ((*i).bar % 64 == 1) {
                                    if ((*i).bar % 256 == 1) {
                                          snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
                                          (*marks)[n].style = GtkCustomRulerMarkMajor;
                                    } else {
                                          snprintf (buf, sizeof(buf), " ");
                                          if ((*i).bar % 256 == 129)  {
                                                (*marks)[n].style = GtkCustomRulerMarkMinor;
                                          } else {
                                                (*marks)[n].style = GtkCustomRulerMarkMicro;
                                          }
                                    }
                                    (*marks)[n].label = g_strdup (buf);
                                    (*marks)[n].position = (*i).frame;
                                    n++;
                              }
                        }
                  }
            } else if (desirable_marks < (uint32_t)(nmarks = (bars / 16) + 1)) {
                  *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
                  for (n = 0,  i = current_bbt_points->begin(); i != current_bbt_points->end() && n < nmarks; i++) {
                        if ((*i).type == TempoMap::Bar)  {
                              if ((*i).bar % 16 == 1) {
                                    if ((*i).bar % 64 == 1) {
                                          snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
                                          (*marks)[n].style = GtkCustomRulerMarkMajor;
                                    } else {
                                          snprintf (buf, sizeof(buf), " ");
                                          if ((*i).bar % 64 == 33)  {
                                                (*marks)[n].style = GtkCustomRulerMarkMinor;
                                          } else {
                                                (*marks)[n].style = GtkCustomRulerMarkMicro;
                                          }
                                    }
                                    (*marks)[n].label = g_strdup (buf);
                                    (*marks)[n].position = (*i).frame;
                                    n++;
                              }
                        }
                  }
            } else if (desirable_marks < (uint32_t)(nmarks = (bars / 4) + 1)){
                  *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
                  for (n = 0,   i = current_bbt_points->begin(); i != current_bbt_points->end() && n < nmarks; ++i) {
                        if ((*i).type == TempoMap::Bar)  {
                              if ((*i).bar % 4 == 1) {
                                    if ((*i).bar % 16 == 1) {
                                          snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
                                          (*marks)[n].style = GtkCustomRulerMarkMajor;
                                    } else {
                                          snprintf (buf, sizeof(buf), " ");
                                          if ((*i).bar % 16 == 9)  {
                                                (*marks)[n].style = GtkCustomRulerMarkMinor;
                                          } else {
                                                (*marks)[n].style = GtkCustomRulerMarkMicro;
                                          }
                                    }
                                    (*marks)[n].label = g_strdup (buf);
                                    (*marks)[n].position = (*i).frame;
                                    n++;
                              }
                        }
                  }
            } else {
                  nmarks = bars + 1;
                  *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks );
                  for (n = 0,  i = current_bbt_points->begin(); i != current_bbt_points->end() && n < nmarks; i++) {
                              if ((*i).type == TempoMap::Bar)  {
                                    if ((*i).bar % 4 == 1) {
                                          snprintf (buf, sizeof(buf), "%" PRIu32, (*i).bar);
                                          (*marks)[n].style = GtkCustomRulerMarkMajor;
                                    } else {
                                          snprintf (buf, sizeof(buf), " ");
                                    if ((*i).bar % 4 == 3)  {
                                          (*marks)[n].style = GtkCustomRulerMarkMinor;
                                    } else {
                                                (*marks)[n].style = GtkCustomRulerMarkMicro;
                                    }
                                    }
                                    (*marks)[n].label = g_strdup (buf);
                                    (*marks)[n].position = (*i).frame;
                                    n++;
                              }
                  }
            }
            return n;
      }
}

gint
Editor::metric_get_frames (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
{
      nframes64_t mark_interval;
      nframes64_t pos;
      nframes64_t ilower = (nframes64_t) floor (lower);
      nframes64_t iupper = (nframes64_t) floor (upper);
      gchar buf[16];
      gint nmarks;
      gint n;

      if (session == 0) {
            return 0;
      }

      mark_interval = (iupper - ilower) / 5;
      if (mark_interval > session->frame_rate()) {
            mark_interval -= mark_interval % session->frame_rate();
      } else {
            mark_interval = session->frame_rate() / (session->frame_rate() / mark_interval ) ;
      }
      nmarks = 5;
      *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
      for (n = 0, pos = ilower; n < nmarks; pos += mark_interval, ++n) {
            snprintf (buf, sizeof(buf), "%" PRIi64,  pos);
            (*marks)[n].label = g_strdup (buf);
            (*marks)[n].position = pos;
            (*marks)[n].style = GtkCustomRulerMarkMajor;
      }
      
      return nmarks;
}

static void
sample_to_clock_parts ( nframes64_t sample,
                  nframes64_t sample_rate, 
                  long *hrs_p,
                  long *mins_p,
                  long *secs_p,
                  long *millisecs_p)

{
      nframes64_t left;
      long hrs;
      long mins;
      long secs;
      long millisecs;
      
      left = sample;
      hrs = left / (sample_rate * 60 * 60);
      left -= hrs * sample_rate * 60 * 60;
      mins = left / (sample_rate * 60);
      left -= mins * sample_rate * 60;
      secs = left / sample_rate;
      left -= secs * sample_rate;
      millisecs = left * 1000 / sample_rate;

      *millisecs_p = millisecs;
      *secs_p = secs;
      *mins_p = mins;
      *hrs_p = hrs;

      return;
}

gint
Editor::metric_get_minsec (GtkCustomRulerMark **marks, gdouble lower, gdouble upper, gint maxchars)
{
      nframes64_t range;
      nframes64_t fr;
      nframes64_t mark_interval;
      nframes64_t pos;
      nframes64_t spacer;
      long hrs, mins, secs, millisecs;
      gchar buf[16];
      gint nmarks;
      gint n;
      gint mark_modulo = 100;
      bool show_seconds = false;
      bool show_minutes = false;
      bool show_hours = false;
      nframes64_t ilower = (nframes64_t) floor (lower);
      nframes64_t iupper = (nframes64_t) floor (upper);

      if (session == 0) {
            return 0;
      }

      fr = session->frame_rate();

      /* to prevent 'flashing' */
      if (lower > (spacer = (nframes64_t)(128 * Editor::get_current_zoom ()))) {
            lower = lower - spacer;
      } else {
            lower = 0;
      }
      upper = upper + spacer;
      range = iupper - ilower;

      if (range <  (fr / 50)) {
            mark_interval =  fr / 100; /* show 1/100 seconds */
            mark_modulo = 10;
      } else if (range <= (fr / 10)) { /* 0-0.1 second */
            mark_interval = fr / 50; /* show 1/50 seconds */
            mark_modulo = 20;
      } else if (range <= (fr / 2)) { /* 0-0.5 second */
            mark_interval = fr / 20;  /* show 1/20 seconds */
            mark_modulo = 100;
      } else if (range <= fr) { /* 0-1 second */
            mark_interval = fr / 10;  /* show 1/10 seconds */
            mark_modulo = 200;
      } else if (range <= 2 * fr) { /* 1-2 seconds */
            mark_interval = fr / 2; /* show 1/2 seconds */
            mark_modulo = 500;
      } else if (range <= 8 * fr) { /* 2-5 seconds */
            mark_interval =  fr / 5; /* show 2 seconds */
            mark_modulo = 1000;
      } else if (range <= 16 * fr) { /* 8-16 seconds */
            mark_interval =  fr; /* show 1 seconds */
            show_seconds = true;
            mark_modulo = 5;
      } else if (range <= 30 * fr) { /* 10-30 seconds */
            mark_interval =  fr; /* show 10 seconds */
            show_seconds = true;
                mark_modulo = 5;
      } else if (range <= 60 * fr) { /* 30-60 seconds */
                mark_interval = 5 * fr; /* show 5 seconds */
                show_seconds = true;
                mark_modulo = 3;
        } else if (range <= 2 * 60 * fr) { /* 1-2 minutes */
                mark_interval = 5 * fr; /* show 5 seconds */
                show_seconds = true;
                mark_modulo = 3;
        } else if (range <= 4 * 60 * fr) { /* 4 minutes */
                mark_interval = 10 * fr; /* show 10 seconds */
                show_seconds = true;
                mark_modulo = 30;
        } else if (range <= 10 * 60 * fr) { /* 10 minutes */
                mark_interval = 30 * fr; /* show 30 seconds */
                show_seconds = true;
                mark_modulo = 60;
        } else if (range <= 30 * 60 * fr) { /* 10-30 minutes */
                mark_interval =  60 * fr; /* show 1 minute */
                show_minutes = true;
            mark_modulo = 5;
        } else if (range <= 60 * 60 * fr) { /* 30 minutes - 1hr */
                mark_interval = 2 * 60 * fr; /* show 2 minutes */
                show_minutes = true;
                mark_modulo = 10;
        } else if (range <= 4 * 60 * 60 * fr) { /* 1 - 4 hrs*/
                mark_interval = 5 * 60 * fr; /* show 10 minutes */
                show_minutes = true;
                mark_modulo = 30;
        } else if (range <= 8 * 60 * 60 * fr) { /* 4 - 8 hrs*/
                mark_interval = 20 * 60 * fr; /* show 20 minutes */
                show_minutes = true;
                mark_modulo = 60;
        } else if (range <= 16 * 60 * 60 * fr) { /* 16-24 hrs*/
                mark_interval =  60 * 60 * fr; /* show 60 minutes */
                show_hours = true;
            mark_modulo = 2;
        } else {
                                                                                                                   
                /* not possible if nframes64_t is a 32 bit quantity */
                                                                                                                   
                mark_interval = 4 * 60 * 60 * fr; /* show 4 hrs */
        }

      nmarks = 1 + (range / mark_interval);
      *marks = (GtkCustomRulerMark *) g_malloc (sizeof(GtkCustomRulerMark) * nmarks);
      pos = ((ilower + (mark_interval/2))/mark_interval) * mark_interval;
      
      if (show_seconds) {
            for (n = 0; n < nmarks; pos += mark_interval, ++n) {
                  sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
                        if (secs % mark_modulo == 0) {
                        if (secs == 0) {
                              (*marks)[n].style = GtkCustomRulerMarkMajor;
                        } else {
                              (*marks)[n].style = GtkCustomRulerMarkMinor;
                        }
                        snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
                  } else {
                              snprintf (buf, sizeof(buf), " ");
                              (*marks)[n].style = GtkCustomRulerMarkMicro;
                    }
                  (*marks)[n].label = g_strdup (buf);
                        (*marks)[n].position = pos;
            }
        } else if (show_minutes) {
            for (n = 0; n < nmarks; pos += mark_interval, ++n) {
                        sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
                        if (mins % mark_modulo == 0) {
                                if (mins == 0) {
                                        (*marks)[n].style = GtkCustomRulerMarkMajor;
                                } else {
                                        (*marks)[n].style = GtkCustomRulerMarkMinor;
                                }
                        snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
                        } else {
                                snprintf (buf, sizeof(buf), " ");
                                (*marks)[n].style = GtkCustomRulerMarkMicro;
                        }
                        (*marks)[n].label = g_strdup (buf);
                        (*marks)[n].position = pos;
                }
        } else if (show_hours) {
             for (n = 0; n < nmarks; pos += mark_interval, ++n) {
                        sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
                        if (hrs % mark_modulo == 0) {
                                (*marks)[n].style = GtkCustomRulerMarkMajor;
                                snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
                        } else {
                                snprintf (buf, sizeof(buf), " ");
                                (*marks)[n].style = GtkCustomRulerMarkMicro;
                        }
                        (*marks)[n].label = g_strdup (buf);
                        (*marks)[n].position = pos;
                }
        } else {
            for (n = 0; n < nmarks; pos += mark_interval, ++n) {
                  sample_to_clock_parts (pos, fr, &hrs, &mins, &secs, &millisecs);
                  if (millisecs % mark_modulo == 0) {
                        if (millisecs == 0) {
                              (*marks)[n].style = GtkCustomRulerMarkMajor;
                        } else {
                              (*marks)[n].style = GtkCustomRulerMarkMinor;
                        }
                        snprintf (buf, sizeof(buf), "%02ld:%02ld:%02ld.%03ld", hrs, mins, secs, millisecs);
                  } else {
                        snprintf (buf, sizeof(buf), " ");
                        (*marks)[n].style = GtkCustomRulerMarkMicro;
                  }
                  (*marks)[n].label = g_strdup (buf);
                  (*marks)[n].position = pos;
            }
      }

      return nmarks;
}

Generated by  Doxygen 1.6.0   Back to index