GUIRadialSlider.h

/*
* Copyright (C) TES Electronic Solutions GmbH,
* All Rights Reserved.
* Contact: info@guiliani.de
*
* This file is part of the Guiliani HMI framework
* for the development of graphical user interfaces on embedded systems.
*/
 
#ifndef CGUIRADIALSLIDER__H_
#define CGUIRADIALSLIDER__H_
 
#include "GUIRadialBar.h"
 
#include "GUIImageResource.h"
#include "GUICommonEnums.h"
#include "GUINinePatch.h"
 
 
// @guiliani_doxygen toplevel_control Radial Slider
// @endguiliani_doxygen
class CGUIRadialSlider : public CGUIRadialBar
{
public:
    CGUIRadialSlider(
        CGUICompositeObject* const pkParent,
        const eC_Value& vX, const eC_Value& vY,
        const eC_Value& vWidth, const eC_Value& vHeight,
        const ObjectHandle_t &eID = NO_HANDLE);
 
    CGUIRadialSlider(
        CGUICompositeObject* const pkParent,
        const CGUIRect& kRect,
        const ObjectHandle_t &eID = NO_HANDLE);
 
    CGUIRadialSlider(const CGUIRadialSlider& kSource);
 
    CGUIRadialSlider& operator=(const CGUIRadialSlider& kSource);
 
    virtual ~CGUIRadialSlider();
 
    virtual void SetWidth(const eC_Value& vWidth);
 
    virtual void SetHeight(const eC_Value& vHeight);
 
    virtual eC_Bool DoButtonDown(const eC_Value& vAbsX, const eC_Value& vAbsY);
 
    virtual eC_Bool DoDrag(const eC_Value& vDeltaX, const eC_Value& vDeltaY, const eC_Value& vAbsX, const eC_Value& vAbsY);
 
    virtual eC_Bool DoDragEnd(const eC_Value& vAbsX, const eC_Value& vAbsY);
 
    virtual eC_Bool DoClick(const eC_Value& vAbsX, const eC_Value& vAbsY);
 
    virtual eC_Bool SetValue(const CGUIValue& rkValue);
 
#ifdef GUILIANI_STREAM_GUI
    CGUIRadialSlider();
 
    virtual void ReadFromStream();
#endif
 
#ifdef GUILIANI_WRITE_GUI
    virtual void WriteToStream(const eC_Bool bWriteClassID = false);
#endif
 
protected:
    void Init();
 
    void CopyAttributes(const CGUIRadialSlider& kSource);
 
    void DeInit();
 
    void CalculateImageSizes();
 
    void CalculateValues();
 
    void CalculateHandle();
 
    void MoveHandle(const eC_Value& vDeltaX, const eC_Value& vDeltaY, const eC_Value& vAbsX, const eC_Value& vAbsY);
 
    eC_Value GetAngle(const eC_Value& vAbsX, const eC_Value& vAbsY);
 
    virtual void DrawFilled();
 
private:
    enum MovingPart_t
    {
        MP_NONE,
        MP_HANDLE1,
        MP_HANDLE2,
        MP_MIDDLE
    };
 
private:
    ImageResource_t m_eImageKnob;
 
    eC_Bool m_bDoubleEnded;
 
    eC_Value m_vKnobWidth;
    eC_Value m_vKnobHeight;
 
    CGUIRect m_kHandle1;
    CGUIRect m_kHandle2;
 
    eC_Bool m_bSelfUpdate;
 
    // internal members
    MovingPart_t m_eMovingHandle;
 
    eC_Value m_vCurrentAngle;
    eC_Value m_vCurrentAngle2;
 
    eC_Value m_vCurrentDrawAngle;
    eC_Value m_vCurrentDrawAngle2;
};
#endif