[wxWidgets.git] / src / unix / fontutil.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        unix/fontutil.cpp
// Purpose:     Font helper functions for X11 (GDK/X)
// Author:      Vadim Zeitlin
// Modified by:
// Created:     05.11.99
// RCS-ID:      $Id$
// Copyright:   (c) Vadim Zeitlin
// Licence:     wxWindows license
/////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

#ifdef __GNUG__
    #pragma implementation "fontutil.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#ifndef WX_PRECOMP
#endif // PCH

#ifdef __X__
    #include <X11/Xlib.h>

    #include "wx/utils.h"       // for wxGetDisplay()
#elif defined(__WXGTK__)
    #include "gdk/gdk.h"
#endif

#include "wx/fontutil.h"
#include "wx/fontmap.h"
#include "wx/tokenzr.h"

// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------

// define the functions to create and destroy native fonts for this toolkit
#ifdef __X__
    static inline wxNativeFont wxLoadFont(const wxString& fontSpec)
    {
        return XLoadQueryFont((Display *)wxGetDisplay(), fontSpec);
    }

    static inline void wxFreeFont(wxNativeFont font)
    {
        XFreeFont((Display *)wxGetDisplay(), font);
    }
#elif defined(__WXGTK__)
    static inline wxNativeFont wxLoadFont(const wxString& fontSpec)
    {
        return gdk_font_load( wxConvertWX2MB(fontSpec) );
    }

    static inline void wxFreeFont(wxNativeFont font)
    {
        gdk_font_unref(font);
    }
#else
    #error "Unknown GUI toolkit"
#endif

static bool wxTestFontSpec(const wxString& fontspec);

static wxNativeFont wxLoadQueryFont(int pointSize,
                                    int family,
                                    int style,
                                    int weight,
                                    bool underlined,
                                    const wxString& facename,
                                    const wxString& xregistry,
                                    const wxString& xencoding);

// ============================================================================
// implementation
// ============================================================================

// ----------------------------------------------------------------------------
// wxNativeEncodingInfo
// ----------------------------------------------------------------------------

// convert to/from the string representation: format is
//      registry-encoding[-facename]
bool wxNativeEncodingInfo::FromString(const wxString& s)
{
    wxStringTokenizer tokenizer(s, _T("-"));

    xregistry = tokenizer.GetNextToken();
    if ( !xregistry )
        return FALSE;

    xencoding = tokenizer.GetNextToken();
    if ( !xencoding )
        return FALSE;

    // ok even if empty
    facename = tokenizer.GetNextToken();

    return TRUE;
}

wxString wxNativeEncodingInfo::ToString() const
{
    wxString s;
    s << xregistry << _T('-') << xencoding;
    if ( !!facename )
    {
        s << _T('-') << facename;
    }

    return s;
}

// ----------------------------------------------------------------------------
// common functions
// ----------------------------------------------------------------------------

bool wxGetNativeFontEncoding(wxFontEncoding encoding,
                             wxNativeEncodingInfo *info)
{
    wxCHECK_MSG( info, FALSE, _T("bad pointer in wxGetNativeFontEncoding") );

    if ( encoding == wxFONTENCODING_DEFAULT )
    {
        encoding = wxFont::GetDefaultEncoding();
    }

    switch ( encoding )
    {
        case wxFONTENCODING_ISO8859_1:
        case wxFONTENCODING_ISO8859_2:
        case wxFONTENCODING_ISO8859_3:
        case wxFONTENCODING_ISO8859_4:
        case wxFONTENCODING_ISO8859_5:
        case wxFONTENCODING_ISO8859_6:
        case wxFONTENCODING_ISO8859_7:
        case wxFONTENCODING_ISO8859_8:
        case wxFONTENCODING_ISO8859_9:
        case wxFONTENCODING_ISO8859_10:
        case wxFONTENCODING_ISO8859_11:
        case wxFONTENCODING_ISO8859_13:
        case wxFONTENCODING_ISO8859_14:
        case wxFONTENCODING_ISO8859_15:
            {
                int cp = encoding - wxFONTENCODING_ISO8859_1 + 1;
                info->xregistry = wxT("iso8859");
                info->xencoding.Printf(wxT("%d"), cp);
            }
            break;

        case wxFONTENCODING_KOI8:
            info->xregistry = wxT("koi8");

            // we don't make distinction between koi8-r and koi8-u (so far)
            info->xencoding = wxT("*");
            break;

        case wxFONTENCODING_CP1250:
        case wxFONTENCODING_CP1251:
        case wxFONTENCODING_CP1252:
        case wxFONTENCODING_CP1253:
        case wxFONTENCODING_CP1254:
        case wxFONTENCODING_CP1255:
        case wxFONTENCODING_CP1256:
        case wxFONTENCODING_CP1257:
            {
                int cp = encoding - wxFONTENCODING_CP1250 + 1250;
                info->xregistry = wxT("microsoft");
                info->xencoding.Printf(wxT("cp%d"), cp);
            }
            break;

        case wxFONTENCODING_SYSTEM:
            info->xregistry =
            info->xencoding = wxT("*");
            break;

        default:
            // don't know how to translate this encoding into X fontspec
            return FALSE;
    }

    return TRUE;
}

bool wxTestFontEncoding(const wxNativeEncodingInfo& info)
{
    wxString fontspec;
    fontspec.Printf(_T("-*-%s-*-*-*-*-*-*-*-*-*-*-%s-%s"),
                    !info.facename ? _T("*") : info.facename.c_str(),
                    info.xregistry.c_str(),
                    info.xencoding.c_str());

    return wxTestFontSpec(fontspec);
}

// ----------------------------------------------------------------------------
// X-specific functions
// ----------------------------------------------------------------------------

wxNativeFont wxLoadQueryNearestFont(int pointSize,
                                    int family,
                                    int style,
                                    int weight,
                                    bool underlined,
                                    const wxString &facename,
                                    wxFontEncoding encoding)
{
    // first determine the encoding - if the font doesn't exist at all in this
    // encoding, it's useless to do all other approximations (i.e. size,
    // family &c don't matter much)
    wxNativeEncodingInfo info;
    if (encoding == wxFONTENCODING_SYSTEM)
    {
        // This will always work so we don't test to save time
        wxGetNativeFontEncoding(wxFONTENCODING_SYSTEM, &info);
    }
    else
    {
        if ( !wxGetNativeFontEncoding(encoding, &info) ||
             !wxTestFontEncoding(info) )
        {
            if ( !wxTheFontMapper->GetAltForEncoding(encoding, &info) )
            {
                // unspported encoding - replace it with the default
                //
                // NB: we can't just return 0 from here because wxGTK code doesn't
                //     check for it (i.e. it supposes that we'll always succeed),
                //     so it would provoke a crash
                wxGetNativeFontEncoding(wxFONTENCODING_SYSTEM, &info);
            }
	}
    }
    
    // OK, we have the correct xregistry/xencoding in info structure

    wxNativeFont font = wxLoadQueryFont( pointSize, family, style, weight,
                                         underlined, facename,
                                         info.xregistry, info.xencoding );

    if ( !font )
    {
        // search up and down by stepsize 10
        int max_size = pointSize + 20 * (1 + (pointSize/180));
        int min_size = pointSize - 20 * (1 + (pointSize/180));

        int i;

        // Search for smaller size (approx.)
        for ( i = pointSize - 10; !font && i >= 10 && i >= min_size; i -= 10 )
        {
            font = wxLoadQueryFont(i, family, style, weight, underlined,
                                   facename, info.xregistry, info.xencoding);
        }

        // Search for larger size (approx.)
        for ( i = pointSize + 10; !font && i <= max_size; i += 10 )
        {
            font = wxLoadQueryFont(i, family, style, weight, underlined,
                                   facename, info.xregistry, info.xencoding);
        }

        // Try default family
        if ( !font && family != wxDEFAULT )
        {
            font = wxLoadQueryFont(pointSize, wxDEFAULT, style, weight,
                                   underlined, facename,
                                   info.xregistry, info.xencoding );
        }

        // Bogus font I
        if ( !font )
        {
            font = wxLoadQueryFont(120, wxDEFAULT, wxNORMAL, wxNORMAL,
                                   underlined, facename,
                                   info.xregistry, info.xencoding);
        }

        // Bogus font II
        if ( !font )
        {
            font = wxLoadQueryFont(120, wxDEFAULT, wxNORMAL, wxNORMAL,
                                   underlined, wxEmptyString,
                                   info.xregistry, info.xencoding);
        }
    }

    return font;
}

// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------

// returns TRUE if there are any fonts matching this font spec
static bool wxTestFontSpec(const wxString& fontspec)
{
    wxNativeFont test = wxLoadFont(fontspec);
    if ( test )
    {
        wxFreeFont(test);

        return TRUE;
    }
    else
    {
        return FALSE;
    }
}

static wxNativeFont wxLoadQueryFont(int pointSize,
                                    int family,
                                    int style,
                                    int weight,
                                    bool WXUNUSED(underlined),
                                    const wxString& facename,
                                    const wxString& xregistry,
                                    const wxString& xencoding)
{
    wxString xfamily;
    switch (family)
    {
        case wxDECORATIVE: xfamily = wxT("lucida"); break;
        case wxROMAN:      xfamily = wxT("times");  break;
        case wxMODERN:     xfamily = wxT("courier"); break;
        case wxSWISS:      xfamily = wxT("helvetica"); break;
        case wxTELETYPE:   xfamily = wxT("lucidatypewriter"); break;
        case wxSCRIPT:     xfamily = wxT("utopia"); break;
        default:           xfamily = wxT("*");
    }

    wxString fontSpec;
    if (!facename.IsEmpty())
    {
        fontSpec.Printf(wxT("-*-%s-*-*-normal-*-*-*-*-*-*-*-*-*"),
                        facename.c_str());

        if ( wxTestFontSpec(fontSpec) )
        {
            xfamily = facename;
        }
        //else: no such family, use default one instead
    }

    wxString xstyle;
    switch (style)
    {
        case wxITALIC:     xstyle = wxT("i"); break;
        case wxSLANT:      xstyle = wxT("o"); break;
        case wxNORMAL:     xstyle = wxT("r"); break;
        default:           xstyle = wxT("*"); break;
    }

    wxString xweight;
    switch (weight)
    {
         case wxBOLD:
             {
                  fontSpec.Printf(wxT("-*-%s-bold-*-*-*-*-*-*-*-*-*-*-*"),
                         xfamily.c_str());
                  if ( wxTestFontSpec(fontSpec) )
                  {
                       xweight = wxT("bold");
                       break;
                  }
                  fontSpec.Printf(wxT("-*-%s-heavy-*-*-*-*-*-*-*-*-*-*-*"),
                         xfamily.c_str());
                  if ( wxTestFontSpec(fontSpec) )
                  {
                       xweight = wxT("heavy");
                       break;
                  }
                  fontSpec.Printf(wxT("-*-%s-extrabold-*-*-*-*-*-*-*-*-*-*-*"),
                         xfamily.c_str());
                  if ( wxTestFontSpec(fontSpec) )
                  {
                      xweight = wxT("extrabold");
                      break;
                  }
                  fontSpec.Printf(wxT("-*-%s-demibold-*-*-*-*-*-*-*-*-*-*-*"),
                         xfamily.c_str());
                  if ( wxTestFontSpec(fontSpec) )
                  {
                      xweight = wxT("demibold");
                      break;
                  }
                  fontSpec.Printf(wxT("-*-%s-black-*-*-*-*-*-*-*-*-*-*-*"),
                         xfamily.c_str());
                  if ( wxTestFontSpec(fontSpec) )
                  {
                      xweight = wxT("black");
                      break;
                  }
                  fontSpec.Printf(wxT("-*-%s-ultrablack-*-*-*-*-*-*-*-*-*-*-*"),
                         xfamily.c_str());
                  if ( wxTestFontSpec(fontSpec) )
                  {
                      xweight = wxT("ultrablack");
                      break;
                  }
              }
              break;
        case wxLIGHT:
             {
                  fontSpec.Printf(wxT("-*-%s-light-*-*-*-*-*-*-*-*-*-*-*"),
                         xfamily.c_str());
                  if ( wxTestFontSpec(fontSpec) )
                  {
                       xweight = wxT("light");
                       break;
                  }
                  fontSpec.Printf(wxT("-*-%s-thin-*-*-*-*-*-*-*-*-*-*-*"),
                         xfamily.c_str());
                  if ( wxTestFontSpec(fontSpec) )
                  {
                       xweight = wxT("thin");
                       break;
                  }
             }
             break;
         case wxNORMAL:
             {
                  fontSpec.Printf(wxT("-*-%s-medium-*-*-*-*-*-*-*-*-*-*-*"),
                         xfamily.c_str());
                  if ( wxTestFontSpec(fontSpec) )
                  {
                       xweight = wxT("medium");
                       break;
                  }
                  fontSpec.Printf(wxT("-*-%s-normal-*-*-*-*-*-*-*-*-*-*-*"),
                         xfamily.c_str());
                  if ( wxTestFontSpec(fontSpec) )
                  {
                       xweight = wxT("normal");
                       break;
                  }
                  fontSpec.Printf(wxT("-*-%s-regular-*-*-*-*-*-*-*-*-*-*-*"),
                         xfamily.c_str());
                  if ( wxTestFontSpec(fontSpec) )
                  {
                      xweight = wxT("regular");
                      break;
                  }
                  xweight = wxT("*");
              }
              break;
        default:           xweight = wxT("*"); break;
    }

    // construct the X font spec from our data
    fontSpec.Printf(wxT("-*-%s-%s-%s-normal-*-*-%d-*-*-*-*-%s-%s"),
                    xfamily.c_str(), xweight.c_str(), xstyle.c_str(),
                    pointSize, xregistry.c_str(), xencoding.c_str());

    return wxLoadFont(fontSpec);
}
Commit	Line	Data
7beba2fc VZ	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: unix/fontutil.cpp
	3	// Purpose: Font helper functions for X11 (GDK/X)
	4	// Author: Vadim Zeitlin
	5	// Modified by:
	6	// Created: 05.11.99
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Vadim Zeitlin
	9	// Licence: wxWindows license
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	// ============================================================================
	13	// declarations
	14	// ============================================================================
	15
	16	// ----------------------------------------------------------------------------
	17	// headers
	18	// ----------------------------------------------------------------------------
	19
	20	#ifdef __GNUG__
	21	#pragma implementation "fontutil.h"
	22	#endif
	23
	24	// For compilers that support precompilation, includes "wx.h".
	25	#include "wx/wxprec.h"
	26
	27	#ifdef __BORLANDC__
	28	#pragma hdrstop
	29	#endif
	30
	31	#ifndef WX_PRECOMP
	32	#endif // PCH
	33
79e4b627 VZ	34	#ifdef __X__
	35	#include <X11/Xlib.h>
	36
	37	#include "wx/utils.h" // for wxGetDisplay()
	38	#elif defined(__WXGTK__)
	39	#include "gdk/gdk.h"
	40	#endif
	41
7beba2fc VZ	42	#include "wx/fontutil.h"
	43	#include "wx/fontmap.h"
	44	#include "wx/tokenzr.h"
	45
	46	// ----------------------------------------------------------------------------
	47	// private functions
	48	// ----------------------------------------------------------------------------
	49
	50	// define the functions to create and destroy native fonts for this toolkit
	51	#ifdef __X__
	52	static inline wxNativeFont wxLoadFont(const wxString& fontSpec)
	53	{
	54	return XLoadQueryFont((Display *)wxGetDisplay(), fontSpec);
	55	}
	56
	57	static inline void wxFreeFont(wxNativeFont font)
	58	{
	59	XFreeFont((Display *)wxGetDisplay(), font);
	60	}
	61	#elif defined(__WXGTK__)
7beba2fc VZ	62	static inline wxNativeFont wxLoadFont(const wxString& fontSpec)
	63	{
	64	return gdk_font_load( wxConvertWX2MB(fontSpec) );
	65	}
	66
	67	static inline void wxFreeFont(wxNativeFont font)
	68	{
	69	gdk_font_unref(font);
	70	}
	71	#else
	72	#error "Unknown GUI toolkit"
	73	#endif
	74
	75	static bool wxTestFontSpec(const wxString& fontspec);
	76
	77	static wxNativeFont wxLoadQueryFont(int pointSize,
	78	int family,
	79	int style,
	80	int weight,
	81	bool underlined,
	82	const wxString& facename,
	83	const wxString& xregistry,
	84	const wxString& xencoding);
	85
	86	// ============================================================================
	87	// implementation
	88	// ============================================================================
	89
	90	// ----------------------------------------------------------------------------
	91	// wxNativeEncodingInfo
	92	// ----------------------------------------------------------------------------
	93
	94	// convert to/from the string representation: format is
	95	// registry-encoding[-facename]
	96	bool wxNativeEncodingInfo::FromString(const wxString& s)
	97	{
	98	wxStringTokenizer tokenizer(s, _T("-"));
	99
	100	xregistry = tokenizer.GetNextToken();
	101	if ( !xregistry )
	102	return FALSE;
	103
	104	xencoding = tokenizer.GetNextToken();
	105	if ( !xencoding )
	106	return FALSE;
	107
	108	// ok even if empty
	109	facename = tokenizer.GetNextToken();
	110
	111	return TRUE;
	112	}
	113
	114	wxString wxNativeEncodingInfo::ToString() const
	115	{
	116	wxString s;
	117	s << xregistry << _T('-') << xencoding;
	118	if ( !!facename )
	119	{
	120	s << _T('-') << facename;
	121	}
	122
	123	return s;
	124	}
	125
126	// ----------------------------------------------------------------------------
127	// common functions
128	// ----------------------------------------------------------------------------
129
130	bool wxGetNativeFontEncoding(wxFontEncoding encoding,
131	wxNativeEncodingInfo *info)
132	{
133	wxCHECK_MSG( info, FALSE, _T("bad pointer in wxGetNativeFontEncoding") );
134
135	if ( encoding == wxFONTENCODING_DEFAULT )
136	{
137	encoding = wxFont::GetDefaultEncoding();
138	}
139
140	switch ( encoding )
141	{
142	case wxFONTENCODING_ISO8859_1:
143	case wxFONTENCODING_ISO8859_2:
144	case wxFONTENCODING_ISO8859_3:
145	case wxFONTENCODING_ISO8859_4:
146	case wxFONTENCODING_ISO8859_5:
147	case wxFONTENCODING_ISO8859_6:
148	case wxFONTENCODING_ISO8859_7:
149	case wxFONTENCODING_ISO8859_8:
150	case wxFONTENCODING_ISO8859_9:
151	case wxFONTENCODING_ISO8859_10:
152	case wxFONTENCODING_ISO8859_11:
153	case wxFONTENCODING_ISO8859_13:
154	case wxFONTENCODING_ISO8859_14:
155	case wxFONTENCODING_ISO8859_15:
156	{
157	int cp = encoding - wxFONTENCODING_ISO8859_1 + 1;
158	info->xregistry = wxT("iso8859");
159	info->xencoding.Printf(wxT("%d"), cp);
160	}
161	break;
162
163	case wxFONTENCODING_KOI8:
164	info->xregistry = wxT("koi8");
165
166	// we don't make distinction between koi8-r and koi8-u (so far)
167	info->xencoding = wxT("*");
168	break;
169
170	case wxFONTENCODING_CP1250:
171	case wxFONTENCODING_CP1251:
172	case wxFONTENCODING_CP1252:
173	case wxFONTENCODING_CP1253:
174	case wxFONTENCODING_CP1254:
175	case wxFONTENCODING_CP1255:
176	case wxFONTENCODING_CP1256:
177	case wxFONTENCODING_CP1257:
178	{
179	int cp = encoding - wxFONTENCODING_CP1250 + 1250;
180	info->xregistry = wxT("microsoft");
181	info->xencoding.Printf(wxT("cp%d"), cp);
182	}
183	break;
184
185	case wxFONTENCODING_SYSTEM:
186	info->xregistry =
81c67e27	187	info->xencoding = wxT("*");
7beba2fc VZ	188	break;
	189
	190	default:
	191	// don't know how to translate this encoding into X fontspec
	192	return FALSE;
	193	}
	194
	195	return TRUE;
	196	}
	197
	198	bool wxTestFontEncoding(const wxNativeEncodingInfo& info)
	199	{
	200	wxString fontspec;
	201	fontspec.Printf(_T("--%s----------*-%s-%s"),
	202	!info.facename ? _T("*") : info.facename.c_str(),
	203	info.xregistry.c_str(),
	204	info.xencoding.c_str());
	205
	206	return wxTestFontSpec(fontspec);
	207	}
	208
	209	// ----------------------------------------------------------------------------
	210	// X-specific functions
	211	// ----------------------------------------------------------------------------
	212
	213	wxNativeFont wxLoadQueryNearestFont(int pointSize,
	214	int family,
	215	int style,
	216	int weight,
	217	bool underlined,
	218	const wxString &facename,
	219	wxFontEncoding encoding)
	220	{
	221	// first determine the encoding - if the font doesn't exist at all in this
	222	// encoding, it's useless to do all other approximations (i.e. size,
	223	// family &c don't matter much)
	224	wxNativeEncodingInfo info;
81c67e27 RR	225	if (encoding == wxFONTENCODING_SYSTEM)
	226	{
	227	// This will always work so we don't test to save time
	228	wxGetNativeFontEncoding(wxFONTENCODING_SYSTEM, &info);
	229	}
	230	else
7beba2fc	231	{
81c67e27 RR	232	if ( !wxGetNativeFontEncoding(encoding, &info) \|\|
81c67e27 RR	233	!wxTestFontEncoding(info) )
7beba2fc	234	{
81c67e27 RR	235	if ( !wxTheFontMapper->GetAltForEncoding(encoding, &info) )
	236	{
	237	// unspported encoding - replace it with the default
	238	//
	239	// NB: we can't just return 0 from here because wxGTK code doesn't
	240	// check for it (i.e. it supposes that we'll always succeed),
	241	// so it would provoke a crash
	242	wxGetNativeFontEncoding(wxFONTENCODING_SYSTEM, &info);
	243	}
	244	}
7beba2fc	245	}
81c67e27 RR	246
81c67e27 RR	247	// OK, we have the correct xregistry/xencoding in info structure
7beba2fc VZ	248
	249	wxNativeFont font = wxLoadQueryFont( pointSize, family, style, weight,
	250	underlined, facename,
	251	info.xregistry, info.xencoding );
	252
	253	if ( !font )
	254	{
	255	// search up and down by stepsize 10
	256	int max_size = pointSize + 20 * (1 + (pointSize/180));
	257	int min_size = pointSize - 20 * (1 + (pointSize/180));
	258
	259	int i;
	260
	261	// Search for smaller size (approx.)
	262	for ( i = pointSize - 10; !font && i >= 10 && i >= min_size; i -= 10 )
	263	{
	264	font = wxLoadQueryFont(i, family, style, weight, underlined,
	265	facename, info.xregistry, info.xencoding);
	266	}
	267
	268	// Search for larger size (approx.)
	269	for ( i = pointSize + 10; !font && i <= max_size; i += 10 )
	270	{
	271	font = wxLoadQueryFont(i, family, style, weight, underlined,
	272	facename, info.xregistry, info.xencoding);
	273	}
	274
	275	// Try default family
	276	if ( !font && family != wxDEFAULT )
	277	{
	278	font = wxLoadQueryFont(pointSize, wxDEFAULT, style, weight,
	279	underlined, facename,
	280	info.xregistry, info.xencoding );
	281	}
	282
	283	// Bogus font I
	284	if ( !font )
	285	{
	286	font = wxLoadQueryFont(120, wxDEFAULT, wxNORMAL, wxNORMAL,
	287	underlined, facename,
	288	info.xregistry, info.xencoding);
	289	}
	290
	291	// Bogus font II
	292	if ( !font )
	293	{
	294	font = wxLoadQueryFont(120, wxDEFAULT, wxNORMAL, wxNORMAL,
	295	underlined, wxEmptyString,
	296	info.xregistry, info.xencoding);
	297	}
	298	}
	299
	300	return font;
	301	}
	302
	303	// ----------------------------------------------------------------------------
	304	// private functions
	305	// ----------------------------------------------------------------------------
	306
	307	// returns TRUE if there are any fonts matching this font spec
	308	static bool wxTestFontSpec(const wxString& fontspec)
	309	{
	310	wxNativeFont test = wxLoadFont(fontspec);
	311	if ( test )
312	{
313	wxFreeFont(test);
314
315	return TRUE;
316	}
317	else
318	{
319	return FALSE;
320	}
321	}
322
323	static wxNativeFont wxLoadQueryFont(int pointSize,
324	int family,
325	int style,
326	int weight,
327	bool WXUNUSED(underlined),
328	const wxString& facename,
329	const wxString& xregistry,
330	const wxString& xencoding)
331	{
332	wxString xfamily;
333	switch (family)
334	{
335	case wxDECORATIVE: xfamily = wxT("lucida"); break;
336	case wxROMAN: xfamily = wxT("times"); break;
337	case wxMODERN: xfamily = wxT("courier"); break;
338	case wxSWISS: xfamily = wxT("helvetica"); break;
339	case wxTELETYPE: xfamily = wxT("lucidatypewriter"); break;
340	case wxSCRIPT: xfamily = wxT("utopia"); break;
341	default: xfamily = wxT("*");
342	}
343
344	wxString fontSpec;
345	if (!facename.IsEmpty())
346	{
347	fontSpec.Printf(wxT("--%s---normal---------"),
348	facename.c_str());
349
350	if ( wxTestFontSpec(fontSpec) )
351	{
352	xfamily = facename;
353	}
354	//else: no such family, use default one instead
355	}
356
357	wxString xstyle;
358	switch (style)
359	{
360	case wxITALIC: xstyle = wxT("i"); break;
361	case wxSLANT: xstyle = wxT("o"); break;
362	case wxNORMAL: xstyle = wxT("r"); break;
363	default: xstyle = wxT("*"); break;
364	}
365
366	wxString xweight;
367	switch (weight)
368	{
369	case wxBOLD:
370	{
371	fontSpec.Printf(wxT("--%s-bold-----------"),
372	xfamily.c_str());
373	if ( wxTestFontSpec(fontSpec) )
374	{
375	xweight = wxT("bold");
376	break;
377	}
378	fontSpec.Printf(wxT("--%s-heavy-----------"),
379	xfamily.c_str());
380	if ( wxTestFontSpec(fontSpec) )
381	{
382	xweight = wxT("heavy");
383	break;
384	}
385	fontSpec.Printf(wxT("--%s-extrabold-----------"),
386	xfamily.c_str());
387	if ( wxTestFontSpec(fontSpec) )
388	{
389	xweight = wxT("extrabold");
390	break;
391	}
392	fontSpec.Printf(wxT("--%s-demibold-----------"),
393	xfamily.c_str());
394	if ( wxTestFontSpec(fontSpec) )
395	{
396	xweight = wxT("demibold");
397	break;
398	}
399	fontSpec.Printf(wxT("--%s-black-----------"),
400	xfamily.c_str());
401	if ( wxTestFontSpec(fontSpec) )
402	{
403	xweight = wxT("black");
404	break;
405	}
406	fontSpec.Printf(wxT("--%s-ultrablack-----------"),
407	xfamily.c_str());
408	if ( wxTestFontSpec(fontSpec) )
409	{
410	xweight = wxT("ultrablack");
411	break;
412	}
413	}
414	break;
415	case wxLIGHT:
416	{
417	fontSpec.Printf(wxT("--%s-light-----------"),
418	xfamily.c_str());
419	if ( wxTestFontSpec(fontSpec) )
420	{
421	xweight = wxT("light");
422	break;
423	}
424	fontSpec.Printf(wxT("--%s-thin-----------"),
425	xfamily.c_str());
426	if ( wxTestFontSpec(fontSpec) )
427	{
428	xweight = wxT("thin");
429	break;
430	}
431	}
432	break;
433	case wxNORMAL:
434	{
435	fontSpec.Printf(wxT("--%s-medium-----------"),
436	xfamily.c_str());
437	if ( wxTestFontSpec(fontSpec) )
438	{
439	xweight = wxT("medium");
440	break;
441	}
442	fontSpec.Printf(wxT("--%s-normal-----------"),
443	xfamily.c_str());
444	if ( wxTestFontSpec(fontSpec) )
445	{
446	xweight = wxT("normal");
447	break;
448	}
449	fontSpec.Printf(wxT("--%s-regular-----------"),
450	xfamily.c_str());
451	if ( wxTestFontSpec(fontSpec) )
452	{
453	xweight = wxT("regular");
454	break;
455	}
456	xweight = wxT("*");
457	}
458	break;
459	default: xweight = wxT("*"); break;
460	}
461
462	// construct the X font spec from our data
463	fontSpec.Printf(wxT("--%s-%s-%s-normal---%d----*-%s-%s"),
464	xfamily.c_str(), xweight.c_str(), xstyle.c_str(),
465	pointSize, xregistry.c_str(), xencoding.c_str());
466
467	return wxLoadFont(fontSpec);
468	}
469