bndedval.h

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#pragma once
 
#include <InterViews/adjust.h>
 
class BoundedValue: public Adjustable {
  protected:
    BoundedValue();
 
  public:
    BoundedValue(Coord lower, Coord upper);
    virtual ~BoundedValue();
 
    virtual void lower_bound(Coord);
    virtual void upper_bound(Coord);
    virtual void current_value(Coord);
    virtual void scroll_incr(Coord);
    virtual void page_incr(Coord);
 
    virtual Coord lower(DimensionName) const;
    virtual Coord upper(DimensionName) const;
    virtual Coord length(DimensionName) const;
    virtual Coord cur_lower(DimensionName) const;
    virtual Coord cur_upper(DimensionName) const;
    virtual Coord cur_length(DimensionName) const;
 
    virtual void scroll_to(DimensionName, Coord position);
    virtual void scroll_forward(DimensionName);
    virtual void scroll_backward(DimensionName);
    virtual void page_forward(DimensionName);
    virtual void page_backward(DimensionName);
 
  private:
    Coord curvalue_;
    Coord lower_;
    Coord span_;
    Coord scroll_incr_;
    Coord page_incr_;
};