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pan_automation_time_axis.cc

/*
    Copyright (C) 2003 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 <ardour/curve.h>
#include <ardour/route.h>
#include <ardour/panner.h>

#include <gtkmm2ext/popup.h>
#include <pbd/memento_command.h>

#include "pan_automation_time_axis.h"
#include "automation_line.h"
#include "canvas_impl.h"
#include "route_ui.h"

#include "i18n.h"

using namespace ARDOUR;
using namespace PBD;
using namespace Gtk;

PanAutomationTimeAxisView::PanAutomationTimeAxisView (Session& s, boost::shared_ptr<Route> r, PublicEditor& e, 
                                          TimeAxisView& parent, Canvas& canvas, std::string n)

      : AxisView (s),
        AutomationTimeAxisView (s, r, e, parent, canvas, n, X_("pan"), "")
{
      multiline_selector.set_name ("PanAutomationLineSelector");
      
      controls_table.attach (multiline_selector, 1, 5, 1, 2, Gtk::EXPAND, Gtk::EXPAND);
}

PanAutomationTimeAxisView::~PanAutomationTimeAxisView ()
{
}

void
PanAutomationTimeAxisView::add_automation_event (ArdourCanvas::Item* item, GdkEvent* event, nframes_t when, double y)
{
      if (lines.empty()) {
            /* no data, possibly caused by no outputs/inputs */
            return;
      }

      int line_index = 0;

      if (lines.size() > 1) {
            line_index = multiline_selector.get_active_row_number();

            if (line_index < 0 || line_index >= (int)lines.size()) {
                  Gtkmm2ext::PopUp* msg = new Gtkmm2ext::PopUp (Gtk::WIN_POS_MOUSE, 5000, true);
            
                  msg->set_text (_("You need to select which line to edit"));
                  msg->touch ();

                  return;
            }
      }

      double x = 0;

      canvas_display->w2i (x, y);

      /* compute vertical fractional position */

      y = 1.0 - (y / height);

      /* map using line */

      lines.front()->view_to_model_y (y);

      AutomationList& alist (lines[line_index]->the_list());

      _session.begin_reversible_command (_("add pan automation event"));
      XMLNode &before = alist.get_state();
      alist.add (when, y);
      XMLNode &after = alist.get_state();
        _session.add_command(new MementoCommand<AutomationList>(alist, &before, &after));
      _session.commit_reversible_command ();
      _session.set_dirty ();
}

void
PanAutomationTimeAxisView::clear_lines ()
{
      AutomationTimeAxisView::clear_lines();
      multiline_selector.clear();
}

void
PanAutomationTimeAxisView::add_line (AutomationLine& line)
{
      char buf[32];
      snprintf(buf,32,"Line %zu",lines.size()+1);
      multiline_selector.append_text(buf);

      if (lines.empty()) {
            multiline_selector.set_active(0);
      }

      if (lines.size() + 1 > 1 && (height_style != Small && height_style != Smaller)) {
            multiline_selector.show();
      } else {
            multiline_selector.hide();

      }

      AutomationTimeAxisView::add_line(line);
}

void
PanAutomationTimeAxisView::set_height (TimeAxisView::TrackHeight th)
{
      AutomationTimeAxisView::set_height(th);

      switch (th) {
            case Largest:
            case Large:
            case Larger:
            case Normal:
                  if (lines.size() > 1) {
                        multiline_selector.show();
                        break;
                  } 
            default:
                  multiline_selector.hide();
      }
}

void
PanAutomationTimeAxisView::set_automation_state (AutoState state)
{
      if (!ignore_state_request) {
            route->panner().set_automation_state (state);
      }
}

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