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(_ctrl->interface_to_internal(adj->get_step_increment()) - mc->lower ());
                _spin_adj.set_page_increment(_ctrl->interface_to_internal(adj->get_page_increment()) - mc->lower ());

                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)
{
}