fontex.cpp

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// FontEx.cpp: implementation of the CFontEx class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "drawcli.h"
#include "FontEx.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
BOOL CALLBACK AFX_EXPORT 
CFontEx::EnumFontFamiliesCallBack(ENUMLOGFONTEX* pelf,
                                  NEWTEXTMETRICEX* /*lpntm*/,
                                  int FontType, LPVOID pThis)
{
    CString k=pelf->elfLogFont.lfFaceName;
    CFontEx *pFont=(CFontEx *)pThis;

    // recherche d'une fonte specifique
    if(pFont->m_strFontName!="" && 
        pFont->m_strFontName!=pelf->elfLogFont.lfFaceName) return(1);

    if(pFont->m_strFontFullName!="")
        if(pFont->m_strFontFullName!=pelf->elfFullName) return(1);

    if(pFont->m_strFontFullName=="")
        if(pelf->elfFullName!=pFont->m_strFontName) return(1); 

    memmove(pFont->m_pCurrentLogFont,&pelf->elfLogFont,sizeof(LOGFONT));
    pFont->m_bFind=true;
    return(0);
}
CDC *CFontEx::CreateScreenDC(void)
{

    static CDC *pDC=NULL;
    HDC hDC;
    hDC = ::GetDC(NULL);
    pDC = CDC::FromHandle(hDC); 
    return (pDC);
} 

bool CFontEx::GetFont(int nNbPoints,
                      const char *szFontName,
                      const char *szFontFullName /*=""*/,
                      CDC *pDC /*=NULL*/)
{

// 
    return GetCFont(*this,
                    nNbPoints,
                    szFontName,
                    szFontFullName,
                    pDC);
}

bool CFontEx::GetCFont(CFont &refCFont,
                       int nNbPoints,
                       const char *szFontName,
                       const char *szFontFullName /*=""*/,
                       CDC *pDC /*=NULL*/)
{

// 
    LOGFONT lf;
    if(refCFont.m_hObject) refCFont.DeleteObject();
    if(GetFont(&lf,nNbPoints,szFontName,szFontFullName,pDC))
    return (refCFont.CreateFontIndirect(&lf)==TRUE); 
    return false;
}
bool CFontEx::GetFont(LOGFONT *plogfont,
                      int nbpoints,
                      const char *szFontName,
                      const char *szFontFullName /*=""*/,
                      CDC *pDC /*=NULL*/)

{ 

    bool bAutoDC=false;
    nbpoints*=10; 

    m_strFontName=szFontName;
    m_strFontFullName=szFontFullName;
    m_pCurrentLogFont=plogfont;
    m_bFind=false;

    if(pDC==NULL)
    { 
        pDC=CreateScreenDC();
        bAutoDC=true;
    }

    LOGFONT lf; 
    memset(&lf, 0, sizeof(LOGFONT));
    lf.lfCharSet = DEFAULT_CHARSET; 

    if(!m_strFontName.IsEmpty())
    strcpy(lf.lfFaceName,m_strFontName);
    else m_strFontName="Courier New";

    ::EnumFontFamiliesEx(pDC->m_hDC, &lf,
            (FONTENUMPROC) CFontEx::EnumFontFamiliesCallBack,
            (LPARAM)this ,0);

    if(m_bFind)
    {
        plogfont->lfHeight =-MulDiv(nbpoints,pDC->GetDeviceCaps(LOGPIXELSY),72);
        plogfont->lfHeight/=10;
        if(nbpoints<0) plogfont->lfHeight=abs(plogfont->lfHeight); 
        plogfont->lfWidth=0;
    }
    if(bAutoDC) pDC->DeleteDC();
    return(m_bFind);
}