src/gtk/font.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        font.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // ============================================================================
  11 // declarations
  12 // ============================================================================
  13
  14 // ----------------------------------------------------------------------------
  15 // headers
  16 // ----------------------------------------------------------------------------
  17
  18 #ifdef __GNUG__
  19     #pragma implementation "font.h"
  20 #endif
  21
  22 #include "wx/font.h"
  23 #include "wx/fontutil.h"
  24 #include "wx/cmndata.h"
  25 #include "wx/utils.h"
  26 #include "wx/log.h"
  27 #include "wx/gdicmn.h"
  28 #include "wx/tokenzr.h"
  29
  30 #include <strings.h>
  31
  32 #include "gdk/gdk.h"
  33
  34 // ----------------------------------------------------------------------------
  35 // wxFontRefData
  36 // ----------------------------------------------------------------------------
  37
  38 class wxFontRefData : public wxObjectRefData
  39 {
  40 public:
  41     wxFontRefData(int size = wxDEFAULT,
  42                   int family = wxDEFAULT,
  43                   int style = wxDEFAULT,
  44                   int weight = wxDEFAULT,
  45                   bool underlined = FALSE,
  46                   const wxString& faceName = wxEmptyString,
  47                   wxFontEncoding encoding = wxFONTENCODING_DEFAULT);
  48     wxFontRefData( const wxFontRefData& data );
  49     virtual ~wxFontRefData();
  50
  51 protected:
  52     // common part of all ctors
  53     void Init(int pointSize,
  54               int family,
  55               int style,
  56               int weight,
  57               bool underlined,
  58               const wxString& faceName,
  59               wxFontEncoding encoding);
  60
  61 private:
  62     wxList          m_scaled_xfonts;
  63     int             m_pointSize;
  64     int             m_family,
  65                     m_style,
  66                     m_weight;
  67     bool            m_underlined;
  68     wxString        m_faceName;
  69     wxFontEncoding  m_encoding;
  70
  71     friend wxFont;
  72 };
  73
  74 // ============================================================================
  75 // implementation
  76 // ============================================================================
  77
  78 // ----------------------------------------------------------------------------
  79 // wxFontRefData
  80 // ----------------------------------------------------------------------------
  81
  82 void wxFontRefData::Init(int pointSize,
  83                          int family,
  84                          int style,
  85                          int weight,
  86                          bool underlined,
  87                          const wxString& faceName,
  88                          wxFontEncoding encoding)
  89 {
  90     if (family == wxDEFAULT)
  91         m_family = wxSWISS;
  92     else
  93         m_family = family;
  94
  95     m_faceName = faceName;
  96
  97     if (style == wxDEFAULT)
  98         m_style = wxNORMAL;
  99     else
 100         m_style = style;
 101
 102     if (weight == wxDEFAULT)
 103         m_weight = wxNORMAL;
 104     else
 105         m_weight = weight;
 106
 107     if (pointSize == wxDEFAULT)
 108         m_pointSize = 12;
 109     else
 110         m_pointSize = pointSize;
 111
 112     m_underlined = underlined;
 113     m_encoding = encoding;
 114 }
 115
 116 wxFontRefData::wxFontRefData( const wxFontRefData& data )
 117     : m_scaled_xfonts(wxKEY_INTEGER)
 118 {
 119     Init(data.m_pointSize, data.m_family, data.m_style, data.m_weight,
 120         data.m_underlined, data.m_faceName, data.m_encoding);
 121 }
 122
 123 wxFontRefData::wxFontRefData(int size, int family, int style,
 124     int weight, bool underlined, const wxString& faceName, wxFontEncoding encoding )
 125     : m_scaled_xfonts(wxKEY_INTEGER)
 126 {
 127     Init(size, family, style, weight,
 128         underlined, faceName, encoding);
 129 }
 130
 131 wxFontRefData::~wxFontRefData()
 132 {
 133     wxNode *node = m_scaled_xfonts.First();
 134     while (node)
 135     {
 136         GdkFont *font = (GdkFont*)node->Data();
 137         wxNode *next = node->Next();
 138         gdk_font_unref( font );
 139         node = next;
 140     }
 141 }
 142
 143 // ----------------------------------------------------------------------------
 144 // wxFont
 145 // ----------------------------------------------------------------------------
 146
 147 IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject)
 148
 149 void wxFont::Init()
 150 {
 151     if (wxTheFontList)
 152         wxTheFontList->Append( this );
 153 }
 154
 155 wxFont::wxFont( const wxString& fontname, const wxFontData& fontdata )
 156 {
 157     Init();
 158
 159     wxCHECK_RET( !!fontname, _T("invalid font spec") );
 160
 161     m_refData = new wxFontRefData();
 162
 163     wxString tmp;
 164
 165     wxStringTokenizer tn( fontname, wxT("-") );
 166
 167     tn.GetNextToken();                           // foundry
 168
 169     M_FONTDATA->m_faceName = tn.GetNextToken();  // family
 170
 171     tmp = tn.GetNextToken().MakeUpper();         // weight
 172     if (tmp == wxT("BOLD")) M_FONTDATA->m_weight = wxBOLD;
 173     if (tmp == wxT("BLACK")) M_FONTDATA->m_weight = wxBOLD;
 174     if (tmp == wxT("EXTRABOLD")) M_FONTDATA->m_weight = wxBOLD;
 175     if (tmp == wxT("DEMIBOLD")) M_FONTDATA->m_weight = wxBOLD;
 176     if (tmp == wxT("ULTRABOLD")) M_FONTDATA->m_weight = wxBOLD;
 177
 178     if (tmp == wxT("LIGHT")) M_FONTDATA->m_weight = wxLIGHT;
 179     if (tmp == wxT("THIN")) M_FONTDATA->m_weight = wxLIGHT;
 180
 181     tmp = tn.GetNextToken().MakeUpper();        // slant
 182     if (tmp == wxT("I")) M_FONTDATA->m_style = wxITALIC;
 183     if (tmp == wxT("O")) M_FONTDATA->m_style = wxITALIC;
 184
 185     tn.GetNextToken();                           // set width
 186     tn.GetNextToken();                           // add. style
 187     tn.GetNextToken();                           // pixel size
 188
 189     tmp = tn.GetNextToken();                     // pointsize
 190     long num = wxStrtol (tmp.c_str(), (wxChar **) NULL, 10);
 191     M_FONTDATA->m_pointSize = num / 10;
 192
 193     tn.GetNextToken();                           // x-res
 194     tn.GetNextToken();                           // y-res
 195
 196     tmp = tn.GetNextToken().MakeUpper();         // spacing
 197
 198     if (tmp == wxT("M"))
 199         M_FONTDATA->m_family = wxMODERN;
 200     else if (M_FONTDATA->m_faceName == wxT("TIMES"))
 201         M_FONTDATA->m_family = wxROMAN;
 202     else if (M_FONTDATA->m_faceName == wxT("HELVETICA"))
 203         M_FONTDATA->m_family = wxSWISS;
 204     else if (M_FONTDATA->m_faceName == wxT("LUCIDATYPEWRITER"))
 205         M_FONTDATA->m_family = wxTELETYPE;
 206     else if (M_FONTDATA->m_faceName == wxT("LUCIDA"))
 207         M_FONTDATA->m_family = wxDECORATIVE;
 208     else if (M_FONTDATA->m_faceName == wxT("UTOPIA"))
 209         M_FONTDATA->m_family = wxSCRIPT;
 210
 211     tn.GetNextToken();                           // avg width
 212
 213     // deal with font encoding
 214     M_FONTDATA->m_encoding = fontdata.GetEncoding();
 215     if ( M_FONTDATA->m_encoding == wxFONTENCODING_SYSTEM )
 216     {
 217         wxString registry = tn.GetNextToken().MakeUpper(),
 218                  encoding = tn.GetNextToken().MakeUpper();
 219
 220         if ( registry == _T("ISO8859") )
 221         {
 222             int cp;
 223             if ( wxSscanf(encoding, wxT("%d"), &cp) == 1 )
 224             {
 225                 M_FONTDATA->m_encoding =
 226                     (wxFontEncoding)(wxFONTENCODING_ISO8859_1 + cp - 1);
 227             }
 228         }
 229         else if ( registry == _T("MICROSOFT") )
 230         {
 231             int cp;
 232             if ( wxSscanf(encoding, wxT("cp125%d"), &cp) == 1 )
 233             {
 234                 M_FONTDATA->m_encoding =
 235                     (wxFontEncoding)(wxFONTENCODING_CP1250 + cp);
 236             }
 237         }
 238         else if ( registry == _T("KOI8") )
 239         {
 240             M_FONTDATA->m_encoding = wxFONTENCODING_KOI8;
 241         }
 242         //else: unknown encoding - may be give a warning here?
 243     }
 244 }
 245
 246 bool wxFont::Create( int pointSize,
 247                      int family,
 248                      int style,
 249                      int weight,
 250                      bool underlined,
 251                      const wxString& face,
 252                      wxFontEncoding encoding )
 253 {
 254     m_refData = new wxFontRefData(pointSize, family, style, weight,
 255                                   underlined, face, encoding);
 256
 257     return TRUE;
 258 }
 259
 260 void wxFont::Unshare()
 261 {
 262     if (!m_refData)
 263     {
 264         m_refData = new wxFontRefData();
 265     }
 266     else
 267     {
 268         wxFontRefData* ref = new wxFontRefData(*(wxFontRefData*)m_refData);
 269         UnRef();
 270         m_refData = ref;
 271     }
 272 }
 273
 274 wxFont::~wxFont()
 275 {
 276     if (wxTheFontList)
 277         wxTheFontList->DeleteObject( this );
 278 }
 279
 280 // ----------------------------------------------------------------------------
 281 // accessors
 282 // ----------------------------------------------------------------------------
 283
 284 int wxFont::GetPointSize() const
 285 {
 286     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 287
 288     return M_FONTDATA->m_pointSize;
 289 }
 290
 291 wxString wxFont::GetFaceName() const
 292 {
 293     wxCHECK_MSG( Ok(), wxT(""), wxT("invalid font") );
 294
 295     return M_FONTDATA->m_faceName;
 296 }
 297
 298 int wxFont::GetFamily() const
 299 {
 300     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 301
 302     return M_FONTDATA->m_family;
 303 }
 304
 305 int wxFont::GetStyle() const
 306 {
 307     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 308
 309     return M_FONTDATA->m_style;
 310 }
 311
 312 int wxFont::GetWeight() const
 313 {
 314     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 315
 316     return M_FONTDATA->m_weight;
 317 }
 318
 319 bool wxFont::GetUnderlined() const
 320 {
 321     wxCHECK_MSG( Ok(), FALSE, wxT("invalid font") );
 322
 323     return M_FONTDATA->m_underlined;
 324 }
 325
 326
 327 wxFontEncoding wxFont::GetEncoding() const
 328 {
 329     wxCHECK_MSG( Ok(), wxFONTENCODING_DEFAULT, wxT("invalid font") );
 330
 331     return M_FONTDATA->m_encoding;
 332 }
 333
 334 // ----------------------------------------------------------------------------
 335 // change font attributes
 336 // ----------------------------------------------------------------------------
 337
 338 void wxFont::SetPointSize(int pointSize)
 339 {
 340     Unshare();
 341
 342     M_FONTDATA->m_pointSize = pointSize;
 343 }
 344
 345 void wxFont::SetFamily(int family)
 346 {
 347     Unshare();
 348
 349     M_FONTDATA->m_family = family;
 350 }
 351
 352 void wxFont::SetStyle(int style)
 353 {
 354     Unshare();
 355
 356     M_FONTDATA->m_style = style;
 357 }
 358
 359 void wxFont::SetWeight(int weight)
 360 {
 361     Unshare();
 362
 363     M_FONTDATA->m_weight = weight;
 364 }
 365
 366 void wxFont::SetFaceName(const wxString& faceName)
 367 {
 368     Unshare();
 369
 370     M_FONTDATA->m_faceName = faceName;
 371 }
 372
 373 void wxFont::SetUnderlined(bool underlined)
 374 {
 375     Unshare();
 376
 377     M_FONTDATA->m_underlined = underlined;
 378 }
 379
 380 void wxFont::SetEncoding(wxFontEncoding encoding)
 381 {
 382     Unshare();
 383
 384     M_FONTDATA->m_encoding = encoding;
 385 }
 386
 387 // ----------------------------------------------------------------------------
 388 // get internal representation of font
 389 // ----------------------------------------------------------------------------
 390
 391 GdkFont *wxFont::GetInternalFont( float scale ) const
 392 {
 393     if (!Ok())
 394     {
 395         wxFAIL_MSG( wxT("invalid font") );
 396
 397         return (GdkFont*) NULL;
 398     }
 399
 400     long int_scale = long(scale * 100.0 + 0.5); /* key for fontlist */
 401     int point_scale = (int)((M_FONTDATA->m_pointSize * 10 * int_scale) / 100);
 402     GdkFont *font = (GdkFont *) NULL;
 403
 404     wxNode *node = M_FONTDATA->m_scaled_xfonts.Find(int_scale);
 405     if (node)
 406     {
 407         font = (GdkFont*)node->Data();
 408     }
 409     else
 410     {
 411 #if 0
 412         if ((int_scale == 100) &&
 413                 (M_FONTDATA->m_family == wxSWISS) &&
 414                 (M_FONTDATA->m_style == wxNORMAL) &&
 415                 (M_FONTDATA->m_pointSize == 12) &&
 416                 (M_FONTDATA->m_weight == wxNORMAL) &&
 417                 (M_FONTDATA->m_underlined == FALSE))
 418         {
 419             font = gdk_font_load( "-adobe-helvetica-medium-r-normal--*-120-*-*-*-*-*-*" );
 420         }
 421         else
 422 #endif // 0
 423         {
 424             font = wxLoadQueryNearestFont( point_scale,
 425                                            M_FONTDATA->m_family,
 426                                            M_FONTDATA->m_style,
 427                                            M_FONTDATA->m_weight,
 428                                            M_FONTDATA->m_underlined,
 429                                            M_FONTDATA->m_faceName,
 430                                            M_FONTDATA->m_encoding );
 431         }
 432
 433         M_FONTDATA->m_scaled_xfonts.Append( int_scale, (wxObject*)font );
 434     }
 435
 436     // it's quite useless to make it a wxCHECK because we're going to crash
 437     // anyhow...
 438     wxASSERT_MSG( font, wxT("could not load any font?") );
 439
 440     return font;
 441 }
 442