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wxWindows-2.4.0
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fontenum.cpp
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2002-04-06
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///////////////////////////////////////////////////////////////////////////////
// Name: msw/fontenum.cpp
// Purpose: wxFontEnumerator class for Windows
// Author: Julian Smart
// Modified by: David Webster to add support for font encodings
// Created: 01/03/00
// RCS-ID: $Id: FONTENUM.CPP,v 1.4 2002/04/06 14:57:27 VS Exp $
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#ifdef __GNUG__
#pragma implementation "fontenum.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if wxUSE_FONTMAP
#ifndef WX_PRECOMP
#include "wx/font.h"
#endif
#include "wx/fontenum.h"
#include "wx/fontmap.h"
#include "wx/os2/private.h"
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
class wxFontEnumeratorHelper
{
public:
wxFontEnumeratorHelper(wxFontEnumerator *fontEnum);
// control what exactly are we enumerating
bool SetEncoding(wxFontEncoding encoding);
void SetFixedOnly(bool fixedOnly)
{ m_fixedOnly = fixedOnly; }
// call to start enumeration
void DoEnumerate();
// called by our font enumeration proc
bool OnFont(/*const LPLOGFONT lf, const LPTEXTMETRIC tm*/) const;
private:
// the object we forward calls to OnFont() to
wxFontEnumerator *m_fontEnum;
// if != -1, enum only fonts which have this encoding
int m_charset;
// if not empty, enum only the fonts with this facename
wxString m_facename;
// if TRUE, enum only fixed fonts
bool m_fixedOnly;
};
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------
// TODO:
/*
int CALLBACK wxFontEnumeratorProc(LPLOGFONT lplf, LPTEXTMETRIC lptm,
DWORD dwStyle, LONG lParam);
*/
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// wxFontEnumeratorHelper
// ----------------------------------------------------------------------------
wxFontEnumeratorHelper::wxFontEnumeratorHelper(wxFontEnumerator *fontEnum)
{
m_fontEnum = fontEnum;
m_charset = -1;
m_fixedOnly = FALSE;
}
bool wxFontEnumeratorHelper::SetEncoding(wxFontEncoding encoding)
{
wxNativeEncodingInfo info;
if ( !wxGetNativeFontEncoding(encoding, &info) )
{
if ( !wxFontMapper::Get()->GetAltForEncoding(encoding, &info) )
{
// no such encodings at all
return FALSE;
}
}
m_charset = info.charset;
m_facename = info.facename;
return TRUE;
}
#define wxFONTENUMPROC FONTENUMPROC
void wxFontEnumeratorHelper::DoEnumerate()
{
// TODO:
/*
HDC hDC = ::GetDC(NULL);
#ifdef __WIN32__
LOGFONT lf;
lf.lfCharSet = m_charset;
wxStrncpy(lf.lfFaceName, m_facename, WXSIZEOF(lf.lfFaceName));
lf.lfPitchAndFamily = 0;
::EnumFontFamiliesEx(hDC, &lf, (wxFONTENUMPROC)wxFontEnumeratorProc,
(LPARAM)this, 0) ;
#else // Win16
::EnumFonts(hDC, (LPTSTR)NULL, (FONTENUMPROC)wxFontEnumeratorProc,
#ifdef STRICT
(LPARAM)
#else
(LPSTR)
#endif
this);
#endif // Win32/16
::ReleaseDC(NULL, hDC);
*/
}
bool wxFontEnumeratorHelper::OnFont(/*const LPLOGFONT lf,
const LPTEXTMETRIC tm */) const
{
// TODO:
/*
if ( m_fixedOnly )
{
// check that it's a fixed pitch font (there is *no* error here, the
// flag name is misleading!)
if ( tm->tmPitchAndFamily & TMPF_FIXED_PITCH )
{
// not a fixed pitch font
return TRUE;
}
}
if ( m_charset != -1 )
{
// check that we have the right encoding
if ( lf->lfCharSet != m_charset )
{
return TRUE;
}
}
return m_fontEnum->OnFacename(lf->lfFaceName);
*/
return TRUE;
}
// ----------------------------------------------------------------------------
// wxFontEnumerator
// ----------------------------------------------------------------------------
bool wxFontEnumerator::EnumerateFacenames(wxFontEncoding encoding,
bool fixedWidthOnly)
{
wxFontEnumeratorHelper fe(this);
if ( fe.SetEncoding(encoding) )
{
fe.SetFixedOnly(fixedWidthOnly);
fe.DoEnumerate();
}
// else: no such fonts, unknown encoding
return TRUE;
}
bool wxFontEnumerator::EnumerateEncodings(const wxString& family)
{
wxFAIL_MSG(wxT("TODO"));
return TRUE;
}
// ----------------------------------------------------------------------------
// Windows callbacks
// ----------------------------------------------------------------------------
// TODO:
/*
int CALLBACK wxFontEnumeratorProc(LPLOGFONT lplf, LPTEXTMETRIC lptm,
DWORD dwStyle, LONG lParam)
{
// Get rid of any fonts that we don't want...
if ( dwStyle != TRUETYPE_FONTTYPE )
{
// continue enumeration
return TRUE;
}
wxFontEnumeratorHelper *fontEnum = (wxFontEnumeratorHelper *)lParam;
return fontEnum->OnFont(lplf, lptm);
}
*/
#endif // wxUSE_FONTMAP