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livetrax/gtk2_ardour/stereo_panner_editor.cc
Carl Hetherington 46e448252f Provide dialogs to edit pan values numerically, at least for
mono and stereo panners.


git-svn-id: svn://localhost/ardour2/branches/3.0@12577 d708f5d6-7413-0410-9779-e7cbd77b26cf
2012-06-06 11:47:09 +00:00

139 lines
3.7 KiB
C++

/*
Copyright (C) 2012 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 <gtkmm.h>
#include "gtkmm2ext/utils.h"
#include "gtkmm2ext/gtk_ui.h"
#include "gtkmm2ext/gui_thread.h"
#include "ardour/panner.h"
#include "pbd/controllable.h"
#include "stereo_panner_editor.h"
#include "stereo_panner.h"
#include "i18n.h"
using namespace std;
using namespace Gtk;
using namespace Gtkmm2ext;
StereoPannerEditor::StereoPannerEditor (StereoPanner* p)
: PannerEditor (_("Stereo Panner"))
, _panner (p)
, _ignore_changes (false)
{
Table* t = manage (new Table (2, 3));
t->set_spacings (6);
int n = 0;
t->attach (*manage (left_aligned_label (_("Position"))), 0, 1, n, n + 1);
t->attach (_position, 1, 2, n, n + 1);
t->attach (*manage (left_aligned_label (_("%"))), 2, 3, n, n + 1);
++n;
t->attach (*manage (left_aligned_label (_("Width"))), 0, 1, n, n + 1);
t->attach (_width, 1, 2, n, n + 1);
t->attach (*manage (left_aligned_label (_("%"))), 2, 3, n, n + 1);
++n;
get_vbox()->pack_start (*manage (t));
get_vbox()->set_spacing (6);
_position.set_increments (1, 10);
_width.set_increments (1, 10);
set_position_range ();
set_width_range ();
_panner->get_position_controllable()->Changed.connect (
_connections, invalidator (*this), boost::bind (&StereoPannerEditor::update_editor, this), gui_context ()
);
_panner->get_width_controllable()->Changed.connect (
_connections, invalidator (*this), boost::bind (&StereoPannerEditor::update_editor, this), gui_context ()
);
_panner->DropReferences.connect (_connections, invalidator (*this), boost::bind (&StereoPannerEditor::panner_going_away, this), gui_context ());
_position.signal_value_changed().connect (sigc::mem_fun (*this, &StereoPannerEditor::position_changed));
_width.signal_value_changed().connect (sigc::mem_fun (*this, &StereoPannerEditor::width_changed));
show_all ();
update_editor ();
}
void
StereoPannerEditor::panner_going_away ()
{
_panner = 0;
}
void
StereoPannerEditor::update_editor ()
{
if (!_panner) {
return;
}
_ignore_changes = true;
_position.set_value (100 * _panner->get_position_controllable()->get_value ());
_width.set_value (100 * _panner->get_width_controllable()->get_value ());
_ignore_changes = false;
}
void
StereoPannerEditor::position_changed ()
{
if (_ignore_changes || !_panner) {
return;
}
_ignore_changes = true;
double const v = _position.get_value() / 100;
_panner->get_position_controllable()->set_value (v);
set_width_range ();
_ignore_changes = false;
}
void
StereoPannerEditor::width_changed ()
{
if (_ignore_changes || !_panner) {
return;
}
_ignore_changes = true;
double const v = _width.get_value() / 100;
_panner->get_width_controllable()->set_value (v);
set_position_range ();
_ignore_changes = false;
}
void
StereoPannerEditor::set_position_range ()
{
pair<double, double> const pr = _panner->panner()->position_range ();
_position.set_range (pr.first * 100, pr.second * 100);
}
void
StereoPannerEditor::set_width_range ()
{
pair<double, double> const wr = _panner->panner()->width_range ();
_width.set_range (wr.first * 100, wr.second * 100);
}