// * This file is part of the COLOBOT source code
// * Copyright (C) 2001-2008, Daniel ROUX & EPSITEC SA, www.epsitec.ch
// * Copyright (C) 2012, Polish Portal of Colobot (PPC)
// *
// * 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/.

// scroll.h

#pragma once


#include "common/event.h"

#include "ui/control.h"

namespace Ui {

class CButton;

const float SCROLL_WIDTH = (15.0f/640.0f);



class CScroll : public CControl
{
public:
    CScroll();
    ~CScroll();

    bool        Create(Math::Point pos, Math::Point dim, int icon, EventType eventMsg);

    void        SetPos(Math::Point pos);
    void        SetDim(Math::Point dim);

    bool        SetState(int state, bool bState);
    bool        SetState(int state);
    bool        ClearState(int state);

    bool        EventProcess(const Event &event);
    void        Draw();

    void        SetVisibleValue(float value);
    float       GetVisibleValue();

    void        SetVisibleRatio(float value);
    float       GetVisibleRatio();

    void        SetArrowStep(float step);
    float       GetArrowStep();

protected:
    void        MoveAdjust();
    void        AdjustGlint();
    void        DrawVertex(Math::Point pos, Math::Point dim, int icon);

protected:
    CButton*    m_buttonUp;
    CButton*    m_buttonDown;

    float       m_visibleValue;
    float       m_visibleRatio;
    float       m_step;

    bool        m_bCapture;
    Math::Point     m_pressPos;
    float       m_pressValue;

    EventType    m_eventUp;
    EventType    m_eventDown;
};


}