uslider.hpp

/************************************************************************
 *
 *  uslider.hpp
 *  Ubit GUI Toolkit - Version 6
 *  (C) 2009 | Eric Lecolinet | TELECOM ParisTech | 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.
 * ***********************************************************************/

#ifndef _uslider_hpp_
#define _uslider_hpp_ 1
#include <ubit/unumber.hpp>
#include <ubit/ubox.hpp>
#include <ubit/ustyle.hpp>
namespace ubit {
  
  struct USliderStyle : public UStyle {
    USliderStyle();
    const UStyle& getStyle(UUpdateContext* ctx) const;
    // default is hstyle
    UStyle vstyle;
  };
  
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  class USlider: public UBox {
  public:
    UCLASS(USlider)
    
    USlider(const UArgs& = UArgs::none);
    USlider(UFloat& value, const UArgs& = UArgs::none);
    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<class UPosControl> pknob_ctrl;
    
    void constructs();
    virtual void gotoPosCB(UMouseEvent&);
    virtual void actionCB(UEvent&);  //UNodeEvent
    virtual void changeCB(UEvent&);  //UNodeEvent
  };
  
  
  USlider& uslider(const UArgs& a = UArgs::none);
  
  USlider& uslider(UFloat& value, const UArgs& a = UArgs::none);
  
  USlider& uhslider(const UArgs& a = UArgs::none);
  
  USlider& uvslider(const UArgs& a = UArgs::none);
  
}
#endif