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;
};