canola/slider.h

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//
// canola - canon canola 1614p emulator
// Copyright (C) 2012 Peter Miller
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License, version 3, as
// published by the Free Software Foundation.
//
// 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, see <http://www.gnu.org/licenses/>.
//

#ifndef CANOLA_SLIDER_H
#define CANOLA_SLIDER_H

#include <lib/config.h>
#include <gtkmm.h>
#include <vector>

class slider:
    public Gtk::EventBox
{
public:
    virtual ~slider();

    typedef sigc::signal<void> value_changed_signal_t;

    value_changed_signal_t &value_changed_signal(void);

    int get_value(void) const;

    void set_value(int n);

protected:
    slider(const std::string &name, int npos, bool act_on_rel = false);

private:
    int nvalues;

    int value;

    typedef Glib::RefPtr<Gdk::Pixbuf> pixbuf_pointer;

    std::vector<pixbuf_pointer> value_images;

    Gtk::Image appearance;

    bool down;

    bool inside;

    int old_value;

    int frac;

    bool on_button_press(GdkEventButton *ep);

    bool on_button_release(GdkEventButton *ep);

    bool on_motion_notify(GdkEventMotion *ep);

    void update_value(int x, int y);

    value_changed_signal_t value_changed_source;

    bool activate_on_release;

    slider();

    slider(const slider &rhs);

    slider &operator=(const slider &rhs);
};

#endif // CANOLA_SLIDER_H