PScrollBar.h

//==============================================================================
// File:        PScrollBar.h
//
// Copyright (c) 2017, Phil Harvey, Queen's University
//==============================================================================
#ifndef __PScrollBar_h__
#define __PScrollBar_h__

#include <Xm/Xm.h>

const int   kScrollMax  = 10000;    // maximum value for all scrollbars
const int   kSliderSize = 1000;     // size of slider

enum EScrollBar {
    kScrollLeft,
    kScrollRight,
    kScrollBottom,
    kNumScrollBars
};

class PScrollingWindow;

class PScrollHandler {
public:
    PScrollHandler() { }
    virtual ~PScrollHandler() { }
    
    virtual void        ScrollValueChanged(EScrollBar bar, int value) { }
};


class PScrollBar {
public:
    PScrollBar(Widget container, EScrollBar bar, char *name, Arg *wargs, int n, PScrollHandler *handler=NULL);
    virtual ~PScrollBar();
    
    Widget              GetWidget()                         { return mScrollWidget; }
    EScrollBar          GetType()                           { return mType;         }
    PScrollHandler    * GetHandler()                        { return mHandler;      }
    void                SetHandler(PScrollHandler *hand)    { mHandler = hand;      }
    
private:
    Widget              mScrollWidget;
    EScrollBar          mType;
    PScrollHandler    * mHandler;
};

#endif // __PScrollBar_h__