uslider.hpp

/* ==================================================== ======== ======= *
*
*  uslider.hpp
*  Ubit Project
*  Part of the Ubit Toolkit: A Brick Construction Game Model for Creating GUIs
*  (C) 1999-2006 / Eric Lecolinet / ENST Paris / http://www.enst.fr/~elc/ubit
*
* ***********************************************************************
* COPYRIGHT NOTICE :
* THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY AND WITHOUT EVEN THE
* IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
* 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.
* SEE FILES 'COPYRIGHT' AND 'COPYING' FOR MORE DETAILS.
* ***********************************************************************
* ==================================================== [(c)Elc] ======= *
* ==================================================== ======== ======= */

#ifndef _uslider_hpp_
#define _uslider_hpp_
//pragma ident "@(#)uslider.hpp         ubit:05.05.00"
#include <ubit/unumber.hpp>
#include <ubit/ubox.hpp>
#include <ubit/uboxGeom.hpp>
#include <ubit/ustyle.hpp>
namespace ubit {

/* ==================================================== ======== ======= */
  
struct USliderStyle : public UStyle {
  USliderStyle();
  const UStyle& getStyle(UContext* ctx) const;
  // default is hstyle
  UStyle vstyle;
};
  
/* ==================================================== ===== ======= */
class USlider: public UBox {
public:
  UBIT_ELEMENT_CLASS(USlider, UBox)

  USlider(const UArgs& = UArgs::none);
  USlider(UFloat& value, const UArgs& = UArgs::none);
  friend USlider& uslider(const UArgs& a = UArgs::none);
  
  friend USlider& uslider(UFloat& value, const UArgs& a = UArgs::none);
  
  friend USlider& uhslider(const UArgs& a = UArgs::none);
  
  friend USlider& uvslider(const UArgs& a = UArgs::none);

   // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    
  bool isVertical() const;
  bool isHorizontal() const;

  float getValue() const {return *pvalue;}

  USlider& setValue(float val) {*pvalue = val; return *this;}
  UFloat& value() {return *pvalue;}
  // - - - impl.  - - - - - - - - - - - - - - - - - - - - - - - - - - -

  static UStyle* createStyle() {return createSliderStyle();}
  static USliderStyle* createSliderStyle() {return new USliderStyle;}
    
  virtual UBox* createKnob();
  
  virtual UBox* createRail();

protected:
  uptr<UFloat> pvalue;        // corresponding value (percent)
  uptr<UBox> prail, pknob;
  uptr<UPos> pknob_pos;
  uptr<UPosChooser> pknob_chooser;

  void constructs();
  virtual void gotoPos(UMouseEvent&);
  virtual void actionCB(UEvent&);
  virtual void changeCB(UEvent&);
};

}
#endif
/* ==================================================== [TheEnd] ======= */
/* ==================================================== [(c)Elc] ======= */

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