GUILayouterAnchor.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 GUILAYOUTERANCHOR__H_
#define GUILAYOUTERANCHOR__H_
 
#include "GUILayouter.h"
class CGUIObject;
 
 
class CGUILayouterAnchor : public CGUILayouter
{
public:
 
    enum Anchors_t {
        ANCHOR_TOP    = 0x0001,
        ANCHOR_BOTTOM = 0x0002,
        ANCHOR_LEFT   = 0x0004,
        ANCHOR_RIGHT  = 0x0008
    };
 
    CGUILayouterAnchor(CGUIObject * const pkObject = NULL);
 
    ~CGUILayouterAnchor() {}
 
    virtual eC_Bool IsDependentOnParentSize() {return true;}
 
    void SetAnchors(
        const eC_Bool &bTop, const eC_Bool &bBottom, const eC_Bool &bLeft, const eC_Bool &bRight);
 
    void SetAnchors(const eC_UByte &ubAnchors);
 
    virtual void InitLayouter(eMovedEdges_t eMovedEdges);
 
    inline eC_Bool IsAnchorSet(const Anchors_t eAnchor) const
    {
        return (m_ubAnchors & eAnchor)!=0;
    };
 
    virtual void DoLayout(eMovedEdges_t eMovedEdges);
 
#if defined(GUILIANI_STREAM_GUI) || defined(GUILIANI_WRITE_GUI)
    static const eC_UInt LAYOUTER_ANCHOR_CLASS_VERSION;
#endif
 
#ifdef GUILIANI_STREAM_GUI
    virtual void ReadFromStream();
#endif
 
#ifdef GUILIANI_WRITE_GUI
    virtual void WriteToStream(const eC_Bool bWriteClassID=false);
#endif
 
private:
 
    inline void Init();
 
    // Helper attributes required for layouting
    eC_Value m_vDistanceBottom;
    eC_Value m_vDistanceRight;
 
    // Scaling factors in vertical and horizontal direction
    eC_Value m_vXFactor;
    eC_Value m_vYFactor;
 
    // Member to store the state of all four anchors
    eC_UByte m_ubAnchors;
};
 
#endif