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livetrax/libs/gtkmm2ext/slider_controller.cc

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/*
Copyright (C) 1998-99 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.
$Id$
*/
#include <string>
#include <gtkmm2ext/gtk_ui.h>
#include <gtkmm2ext/pixfader.h>
#include <gtkmm2ext/slider_controller.h>
#include "pbd/controllable.h"
#include "i18n.h"
using namespace Gtkmm2ext;
using namespace PBD;
SliderController::SliderController (Gtk::Adjustment *adj, boost::shared_ptr<PBD::Controllable> mc, int orientation, int fader_length, int fader_girth)
: PixFader (*adj, orientation, fader_length, fader_girth)
, _ctrl (mc)
, _ctrl_adj (adj)
, _spin_adj (0, 0, 1.0, .1, .01)
, _spin (_spin_adj, 0, 2)
, _ctrl_ignore (false)
, _spin_ignore (false)
{
if (mc) {
_spin_adj.set_lower (mc->lower ());
_spin_adj.set_upper (mc->upper ());
_spin_adj.set_step_increment((mc->upper () - mc->lower ()) / 100);
_spin_adj.set_page_increment((mc->upper () - mc->lower ()) / 10);
adj->signal_value_changed().connect (sigc::mem_fun(*this, &SliderController::ctrl_adjusted));
_spin_adj.signal_value_changed().connect (sigc::mem_fun(*this, &SliderController::spin_adjusted));
_binding_proxy.set_controllable (mc);
}
_spin.set_name ("SliderControllerValue");
_spin.set_numeric (true);
_spin.set_snap_to_ticks (false);
}
bool
SliderController::on_button_press_event (GdkEventButton *ev)
{
if (_binding_proxy.button_press_handler (ev)) {
return true;
}
return PixFader::on_button_press_event (ev);
}
void
SliderController::ctrl_adjusted ()
{
assert (_ctrl); // only used w/BarControlle
if (_spin_ignore) return;
_ctrl_ignore = true;
// TODO consider using internal_to_user, too (amp, dB)
// (also needs _spin_adj min/max range changed accordingly
// and dedicated support for log-scale, revert parts of ceff2e3a62f839)
_spin_adj.set_value (_ctrl->interface_to_internal (_ctrl_adj->get_value()));
_ctrl_ignore = false;
}
void
SliderController::spin_adjusted ()
{
assert (_ctrl); // only used w/BarController
if (_ctrl_ignore) return;
_spin_ignore = true;
// TODO consider using user_to_internal, as well
_ctrl_adj->set_value(_ctrl->internal_to_interface (_spin_adj.get_value()));
_spin_ignore = false;
}
VSliderController::VSliderController (Gtk::Adjustment *adj, boost::shared_ptr<PBD::Controllable> mc, int fader_length, int fader_girth)
: SliderController (adj, mc, VERT, fader_length, fader_girth)
{
}
HSliderController::HSliderController (Gtk::Adjustment *adj, boost::shared_ptr<PBD::Controllable> mc, int fader_length, int fader_girth)
: SliderController (adj, mc, HORIZ, fader_length, fader_girth)
{
}