slider.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

/*
 * This code is based on the CRAB engine
 *
 * Copyright (c) Arvind Raja Yadav
 *
 * Licensed under MIT
 *
 */

#ifndef CRAB_SLIDER_H
#define CRAB_SLIDER_H

#include "crab/ui/Caption.h"
#include "crab/ui/ImageData.h"
#include "crab/ui/button.h"

namespace Crab {

namespace pyrodactyl {
namespace ui {
class Slider {
    // The value of the slider and the backup
    int _value, _backup;

    // The slider bar position and dimensions
    ImageData _bar;

    // The slider knob
    Button _knob;

    // Caption for the slider
    Caption _caption;

    // The maximum and minimum values for the slider
    int _max, _min;

    // Grey out?
    bool _isGreyed;

public:
    Slider() {
        _max = 100;
        _min = 0;
        _value = ((_max - _min) / 2);
        _backup = _value;
        _isGreyed = false;
    }

    ~Slider() {}

    void load(rapidxml::xml_node<char> *node, const int &min, const int &max, const int &val);

    bool handleEvents(const Common::Event &event);

    void draw();

    int Value() { return _value; }
    void value(const int val);

    void createBackup() {
        _backup = _value;
    }

    void restoreBackup() {
        _value = _backup;
        setUI();
    }

    void setEnabled(bool enabled) {
        _isGreyed = !enabled;
    }

    void greyOut();

    void setUI();
};
} // End of namespace ui
} // End of namespace pyrodactyl

} // End of namespace Crab

#endif // CRAB_SLIDER_H