//////////////////////////////////////////////////////////////////////////////
// This file is part of the Journey MMORPG client                           //
// Copyright © 2015-2016 Daniel Allendorf                                   //
//                                                                          //
// This program is free software: you can redistribute it and/or modify     //
// it under the terms of the GNU Affero 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 Affero General Public License for more details.                      //
//                                                                          //
// You should have received a copy of the GNU Affero General Public License //
// along with this program.  If not, see <http://www.gnu.org/licenses/>.    //
//////////////////////////////////////////////////////////////////////////////
#pragma once
#include "TwoSpriteButton.h"

#include "../Cursor.h"

#include "../../Graphics/Texture.h"

#include <functional>
#include <memory>

namespace jrc
{
    class Slider
    {
    public:
        Slider(int32_t type, Range<int16_t> vertical, int16_t x,
            int16_t unitrows, int16_t rowmax, std::function<void(bool upwards)> onmoved);
        Slider();

        bool isenabled() const;
        void setenabled(bool enabled);
        void setrows(int16_t newrow, int16_t unitrows, int16_t rowmax);
        void setrows(int16_t unitrows, int16_t rowmax);
        void setvertical(Range<int16_t> vertical);

        void draw(Point<int16_t> position) const;
        bool remove_cursor(bool clicked);
        Cursor::State send_cursor(Point<int16_t> cursor, bool pressed);
        void send_scroll(double yoffset);

    private:
        Point<int16_t> getthumbpos() const;

        std::function<void(bool upwards)> onmoved;

        Range<int16_t> vertical;
        Point<int16_t> start;
        Point<int16_t> end;
        int16_t buttonheight;
        int16_t rowheight;
        int16_t x;
        int16_t row;
        int16_t rowmax;
        bool scrolling;
        bool enabled;

        Texture dbase;
        Texture dnext;
        Texture dprev;
        Texture base;
        TwoSpriteButton next;
        TwoSpriteButton prev;
        TwoSpriteButton thumb;
    };
}