13
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livetrax/gtk2_ardour/mono_panner_editor.cc

120 lines
3.1 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 "pbd/controllable.h"
#include "mono_panner_editor.h"
#include "mono_panner.h"
#include "i18n.h"
using namespace Gtk;
using namespace Gtkmm2ext;
MonoPannerEditor::MonoPannerEditor (MonoPanner* p)
: PannerEditor (_("Mono 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 (_("Left"))), 0, 1, n, n + 1);
t->attach (_left, 1, 2, n, n + 1);
t->attach (*manage (left_aligned_label (_("%"))), 2, 3, n, n + 1);
++n;
t->attach (*manage (left_aligned_label (_("Right"))), 0, 1, n, n + 1);
t->attach (_right, 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);
_left.set_increments (1, 10);
_left.set_range (0, 100);
_right.set_increments (1, 10);
_right.set_range (0, 100);
_panner->get_controllable()->Changed.connect (_connections, invalidator (*this), boost::bind (&MonoPannerEditor::update_editor, this), gui_context ());
_panner->DropReferences.connect (_connections, invalidator (*this), boost::bind (&MonoPannerEditor::panner_going_away, this), gui_context ());
_left.signal_value_changed().connect (sigc::mem_fun (*this, &MonoPannerEditor::left_changed));
_right.signal_value_changed().connect (sigc::mem_fun (*this, &MonoPannerEditor::right_changed));
show_all ();
update_editor ();
}
void
MonoPannerEditor::panner_going_away ()
{
_panner = 0;
}
void
MonoPannerEditor::update_editor ()
{
if (!_panner) {
return;
}
float const v = _panner->get_controllable()->get_value();
_ignore_changes = true;
_left.set_value (100 * (1 - v));
_right.set_value (100 * v);
_ignore_changes = false;
}
void
MonoPannerEditor::left_changed ()
{
if (_ignore_changes || !_panner) {
return;
}
float const v = 1 - _left.get_value () / 100;
_ignore_changes = true;
_right.set_value (100 * v);
_panner->get_controllable()->set_value (v);
_ignore_changes = false;
}
void
MonoPannerEditor::right_changed ()
{
if (_ignore_changes || !_panner) {
return;
}
float const v = _right.get_value () / 100;
_ignore_changes = true;
_left.set_value (100 * (1 - v));
_panner->get_controllable()->set_value (v);
_ignore_changes = false;
}