uivertscroll.h

/*
===========================================================================
Copyright (C) 2024 the OpenMoHAA team
 
This file is part of OpenMoHAA source code.
 
OpenMoHAA source code 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.
 
OpenMoHAA source code 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 OpenMoHAA source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/
 
#pragma once
 
class unnamed_struct
{
public:
    int itemOffset;
    int orgItem;
};
 
class UIVertScroll : public UIWidget
{
protected:
    int            m_numitems;
    int            m_pageheight;
    int            m_topitem;
    UIFont         m_marlett;
    whatspressed   m_pressed;
    UIRect2D       thumbRect;
    unnamed_struct m_dragThumbState;
    bool           m_frameinitted;
    UColor         m_thumbcolor;
    UColor         m_solidbordercolor;
 
public:
    CLASS_PROTOTYPE(UIVertScroll);
 
protected:
    int  getItemFromHeight(float height);
    bool isEnoughItems(void);
 
public:
    UIVertScroll();
 
    void Draw(void) override;
    void DrawArrow(float top, const char *text, bool pressed);
    void DrawThumb(void);
    void MouseDown(Event *ev);
    void MouseUp(Event *ev);
    void MouseDragged(Event *ev);
    void MouseEnter(Event *ev);
    void MouseLeave(Event *ev);
    void Scroll(Event *ev);
    bool AttemptScrollTo(int to);
    void setNumItems(int i);
    void setPageHeight(int i);
    void setTopItem(int i);
    int  getTopItem(void);
    int  getPageHeight(void);
    int  getNumItems(void);
    void setThumbColor(const UColor& thumb);
    void setSolidBorderColor(const UColor& col);
    void InitFrameAlignRight(UIWidget *parent, float fWidthPadding, float fHeightPadding);
    void FrameInitialized() override;
};