src/msw/fontutil.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/fontutil.cpp
   3 // Purpose:     font-related helper functions for wxMSW
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     05.11.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/string.h"
  29     #include "wx/log.h"
  30     #include "wx/intl.h"
  31     #include "wx/encinfo.h"
  32 #endif //WX_PRECOMP
  33
  34 #include "wx/msw/private.h"
  35
  36 #include "wx/fontutil.h"
  37 #include "wx/fontmap.h"
  38
  39 #include "wx/tokenzr.h"
  40
  41 // for MSVC5 and old w32api
  42 #ifndef HANGUL_CHARSET
  43 #    define HANGUL_CHARSET  129
  44 #endif
  45
  46 // ============================================================================
  47 // implementation
  48 // ============================================================================
  49
  50 // ----------------------------------------------------------------------------
  51 // wxNativeEncodingInfo
  52 // ----------------------------------------------------------------------------
  53
  54 // convert to/from the string representation: format is
  55 //      encodingid;facename[;charset]
  56
  57 bool wxNativeEncodingInfo::FromString(const wxString& s)
  58 {
  59     wxStringTokenizer tokenizer(s, _T(";"));
  60
  61     wxString encid = tokenizer.GetNextToken();
  62
  63     // we support 2 formats: the old one (and still used if !wxUSE_FONTMAP)
  64     // used the raw encoding values but the new one uses the encoding names
  65     long enc;
  66     if ( encid.ToLong(&enc) )
  67     {
  68         // old format, intepret as encoding -- but after minimal checks
  69         if ( enc < 0 || enc >= wxFONTENCODING_MAX )
  70             return false;
  71
  72         encoding = (wxFontEncoding)enc;
  73     }
  74     else // not a number, interpret as an encoding name
  75     {
  76 #if wxUSE_FONTMAP
  77         encoding = wxFontMapper::GetEncodingFromName(encid);
  78         if ( encoding == wxFONTENCODING_MAX )
  79 #endif // wxUSE_FONTMAP
  80         {
  81             // failed to parse the name (or couldn't even try...)
  82             return false;
  83         }
  84     }
  85
  86     facename = tokenizer.GetNextToken();
  87
  88     wxString tmp = tokenizer.GetNextToken();
  89     if ( tmp.empty() )
  90     {
  91         // default charset: but don't use DEFAULT_CHARSET here because it might
  92         // be different from the machine on which the file we had read this
  93         // encoding desc from was created
  94         charset = ANSI_CHARSET;
  95     }
  96     else
  97     {
  98         if ( wxSscanf(tmp, _T("%u"), &charset) != 1 )
  99         {
 100             // should be a number!
 101             return false;
 102         }
 103     }
 104
 105     return true;
 106 }
 107
 108 wxString wxNativeEncodingInfo::ToString() const
 109 {
 110     wxString s;
 111
 112     s
 113 #if wxUSE_FONTMAP
 114       // use the encoding names as this is safer than using the numerical
 115       // values which may change with time (because new encodings are
 116       // inserted...)
 117       << wxFontMapper::GetEncodingName(encoding)
 118 #else // !wxUSE_FONTMAP
 119       // we don't have any choice but to use the raw value
 120       << (long)encoding
 121 #endif // wxUSE_FONTMAP/!wxUSE_FONTMAP
 122       << _T(';') << facename;
 123
 124     // ANSI_CHARSET is assumed anyhow
 125     if ( charset != ANSI_CHARSET )
 126     {
 127          s << _T(';') << charset;
 128     }
 129
 130     return s;
 131 }
 132
 133 // ----------------------------------------------------------------------------
 134 // helper functions
 135 // ----------------------------------------------------------------------------
 136
 137 bool wxGetNativeFontEncoding(wxFontEncoding encoding,
 138                              wxNativeEncodingInfo *info)
 139 {
 140     wxCHECK_MSG( info, false, _T("bad pointer in wxGetNativeFontEncoding") );
 141
 142     if ( encoding == wxFONTENCODING_DEFAULT )
 143     {
 144         encoding = wxFont::GetDefaultEncoding();
 145     }
 146
 147     extern WXDLLIMPEXP_BASE long wxEncodingToCharset(wxFontEncoding encoding);
 148     info->charset = wxEncodingToCharset(encoding);
 149     if ( info->charset == -1 )
 150         return false;
 151
 152     info->encoding = encoding;
 153
 154     return true;
 155 }
 156
 157 bool wxTestFontEncoding(const wxNativeEncodingInfo& info)
 158 {
 159     // try to create such font
 160     LOGFONT lf;
 161     wxZeroMemory(lf);       // all default values
 162
 163     lf.lfCharSet = (BYTE)info.charset;
 164     wxStrncpy(lf.lfFaceName, info.facename, WXSIZEOF(lf.lfFaceName));
 165
 166     HFONT hfont = ::CreateFontIndirect(&lf);
 167     if ( !hfont )
 168     {
 169         // no such font
 170         return false;
 171     }
 172
 173     ::DeleteObject((HGDIOBJ)hfont);
 174
 175     return true;
 176 }
 177
 178 // ----------------------------------------------------------------------------
 179 // wxFontEncoding <-> CHARSET_XXX
 180 // ----------------------------------------------------------------------------
 181
 182 wxFontEncoding wxGetFontEncFromCharSet(int cs)
 183 {
 184     wxFontEncoding fontEncoding;
 185
 186     switch ( cs )
 187     {
 188         default:
 189             wxFAIL_MSG( _T("unexpected Win32 charset") );
 190             // fall through and assume the system charset
 191
 192         case DEFAULT_CHARSET:
 193             fontEncoding = wxFONTENCODING_SYSTEM;
 194             break;
 195
 196         case ANSI_CHARSET:
 197             fontEncoding = wxFONTENCODING_CP1252;
 198             break;
 199
 200         case SYMBOL_CHARSET:
 201             // what can we do here?
 202             fontEncoding = wxFONTENCODING_MAX;
 203             break;
 204
 205 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 206         case EASTEUROPE_CHARSET:
 207             fontEncoding = wxFONTENCODING_CP1250;
 208             break;
 209
 210         case BALTIC_CHARSET:
 211             fontEncoding = wxFONTENCODING_CP1257;
 212             break;
 213
 214         case RUSSIAN_CHARSET:
 215             fontEncoding = wxFONTENCODING_CP1251;
 216             break;
 217
 218         case ARABIC_CHARSET:
 219             fontEncoding = wxFONTENCODING_CP1256;
 220             break;
 221
 222         case GREEK_CHARSET:
 223             fontEncoding = wxFONTENCODING_CP1253;
 224             break;
 225
 226         case HEBREW_CHARSET:
 227             fontEncoding = wxFONTENCODING_CP1255;
 228             break;
 229
 230         case TURKISH_CHARSET:
 231             fontEncoding = wxFONTENCODING_CP1254;
 232             break;
 233
 234         case THAI_CHARSET:
 235             fontEncoding = wxFONTENCODING_CP874;
 236             break;
 237
 238         case SHIFTJIS_CHARSET:
 239             fontEncoding = wxFONTENCODING_CP932;
 240             break;
 241
 242         case GB2312_CHARSET:
 243             fontEncoding = wxFONTENCODING_CP936;
 244             break;
 245
 246         case HANGUL_CHARSET:
 247             fontEncoding = wxFONTENCODING_CP949;
 248             break;
 249
 250         case CHINESEBIG5_CHARSET:
 251             fontEncoding = wxFONTENCODING_CP950;
 252             break;
 253
 254 #endif // Win32
 255
 256         case OEM_CHARSET:
 257             fontEncoding = wxFONTENCODING_CP437;
 258             break;
 259     }
 260
 261     return fontEncoding;
 262 }
 263
 264 // ----------------------------------------------------------------------------
 265 // wxFont <-> LOGFONT conversion
 266 // ----------------------------------------------------------------------------
 267
 268 void wxFillLogFont(LOGFONT *logFont, const wxFont *font)
 269 {
 270     wxNativeFontInfo fi;
 271
 272     // maybe we already have LOGFONT for this font?
 273     const wxNativeFontInfo *pFI = font->GetNativeFontInfo();
 274     if ( !pFI )
 275     {
 276         // use wxNativeFontInfo methods to build a LOGFONT for this font
 277         fi.InitFromFont(*font);
 278
 279         pFI = &fi;
 280     }
 281
 282     // transfer all the data to LOGFONT
 283     *logFont = pFI->lf;
 284 }
 285
 286 wxFont wxCreateFontFromLogFont(const LOGFONT *logFont)
 287 {
 288     wxNativeFontInfo info;
 289
 290     info.lf = *logFont;
 291
 292     return wxFont(info);
 293 }
 294