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/utils.h"
  24 #include "wx/log.h"
  25 #include "wx/gdicmn.h"
  26 #include "wx/tokenzr.h"
  27
  28 #include <strings.h>
  29
  30 #include "gdk/gdk.h"
  31
  32 // ----------------------------------------------------------------------------
  33 // wxFontRefData
  34 // ----------------------------------------------------------------------------
  35
  36 class wxFontRefData : public wxObjectRefData
  37 {
  38 public:
  39     wxFontRefData(int size = wxDEFAULT,
  40                   int family = wxDEFAULT,
  41                   int style = wxDEFAULT,
  42                   int weight = wxDEFAULT,
  43                   bool underlined = FALSE,
  44                   const wxString& faceName = wxEmptyString,
  45                   wxFontEncoding encoding = wxFONTENCODING_DEFAULT);
  46     wxFontRefData( const wxFontRefData& data );
  47     virtual ~wxFontRefData();
  48
  49 protected:
  50     // common part of all ctors
  51     void Init(int pointSize,
  52               int family,
  53               int style,
  54               int weight,
  55               bool underlined,
  56               const wxString& faceName,
  57               wxFontEncoding encoding);
  58
  59 private:
  60     wxList          m_scaled_xfonts;
  61     int             m_pointSize;
  62     int             m_family,
  63                     m_style,
  64                     m_weight;
  65     bool            m_underlined;
  66     wxString        m_faceName;
  67     wxFontEncoding  m_encoding;
  68
  69     friend wxFont;
  70 };
  71
  72 // ============================================================================
  73 // implementation
  74 // ============================================================================
  75
  76 // ----------------------------------------------------------------------------
  77 // wxFontRefData
  78 // ----------------------------------------------------------------------------
  79
  80 void wxFontRefData::Init(int pointSize,
  81                          int family,
  82                          int style,
  83                          int weight,
  84                          bool underlined,
  85                          const wxString& faceName,
  86                          wxFontEncoding encoding)
  87 {
  88     if (family == wxDEFAULT)
  89         m_family = wxSWISS;
  90     else
  91         m_family = family;
  92
  93     m_faceName = faceName;
  94
  95     if (style == wxDEFAULT)
  96         m_style = wxNORMAL;
  97     else
  98         m_style = style;
  99
 100     if (weight == wxDEFAULT)
 101         m_weight = wxNORMAL;
 102     else
 103         m_weight = weight;
 104
 105     if (pointSize == wxDEFAULT)
 106         m_pointSize = 12;
 107     else
 108         m_pointSize = pointSize;
 109
 110     m_underlined = underlined;
 111     m_encoding = encoding;
 112 }
 113
 114 wxFontRefData::wxFontRefData( const wxFontRefData& data )
 115     : m_scaled_xfonts(wxKEY_INTEGER)
 116 {
 117     Init(data.m_pointSize, data.m_family, data.m_style, data.m_weight,
 118         data.m_underlined, data.m_faceName, data.m_encoding);
 119 }
 120
 121 wxFontRefData::wxFontRefData(int size, int family, int style,
 122     int weight, bool underlined, const wxString& faceName, wxFontEncoding encoding )
 123     : m_scaled_xfonts(wxKEY_INTEGER)
 124 {
 125     Init(size, family, style, weight,
 126         underlined, faceName, encoding);
 127 }
 128
 129 wxFontRefData::~wxFontRefData()
 130 {
 131     wxNode *node = m_scaled_xfonts.First();
 132     while (node)
 133     {
 134         GdkFont *font = (GdkFont*)node->Data();
 135         wxNode *next = node->Next();
 136         gdk_font_unref( font );
 137         node = next;
 138     }
 139 }
 140
 141 // ----------------------------------------------------------------------------
 142 // wxFont
 143 // ----------------------------------------------------------------------------
 144
 145 IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject)
 146
 147 void wxFont::Init()
 148 {
 149     if (wxTheFontList)
 150         wxTheFontList->Append( this );
 151 }
 152
 153 wxFont::wxFont( GdkFont *WXUNUSED(font), char *xFontName )
 154 {
 155     if (!xFontName)
 156         return;
 157
 158     Init();
 159
 160     m_refData = new wxFontRefData();
 161
 162     wxString tmp;
 163
 164     wxString fontname( xFontName );
 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     wxString registry = tn.GetNextToken().MakeUpper(),
 215              encoding = tn.GetNextToken().MakeUpper();
 216
 217     if ( registry == _T("ISO8859") )
 218     {
 219         int cp;
 220         if ( wxSscanf(encoding, wxT("%d"), &cp) == 1 )
 221         {
 222             M_FONTDATA->m_encoding =
 223                 (wxFontEncoding)(wxFONTENCODING_ISO8859_1 + cp - 1);
 224         }
 225     }
 226     else if ( registry == _T("MICROSOFT") )
 227     {
 228         int cp;
 229         if ( wxSscanf(encoding, wxT("cp125%d"), &cp) == 1 )
 230         {
 231             M_FONTDATA->m_encoding =
 232                 (wxFontEncoding)(wxFONTENCODING_CP1250 + cp);
 233         }
 234     }
 235     else if ( registry == _T("KOI8") )
 236     {
 237         M_FONTDATA->m_encoding = wxFONTENCODING_KOI8;
 238     }
 239     //else: unknown encoding - may be give a warning here?
 240 }
 241
 242 bool wxFont::Create( int pointSize,
 243                      int family,
 244                      int style,
 245                      int weight,
 246                      bool underlined,
 247                      const wxString& face,
 248                      wxFontEncoding encoding )
 249 {
 250     m_refData = new wxFontRefData(pointSize, family, style, weight,
 251                                   underlined, face, encoding);
 252
 253     return TRUE;
 254 }
 255
 256 void wxFont::Unshare()
 257 {
 258     if (!m_refData)
 259     {
 260         m_refData = new wxFontRefData();
 261     }
 262     else
 263     {
 264         wxFontRefData* ref = new wxFontRefData(*(wxFontRefData*)m_refData);
 265         UnRef();
 266         m_refData = ref;
 267     }
 268 }
 269
 270 wxFont::~wxFont()
 271 {
 272     if (wxTheFontList)
 273         wxTheFontList->DeleteObject( this );
 274 }
 275
 276 // ----------------------------------------------------------------------------
 277 // accessors
 278 // ----------------------------------------------------------------------------
 279
 280 int wxFont::GetPointSize() const
 281 {
 282     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 283
 284     return M_FONTDATA->m_pointSize;
 285 }
 286
 287 wxString wxFont::GetFaceName() const
 288 {
 289     wxCHECK_MSG( Ok(), wxT(""), wxT("invalid font") );
 290
 291     return M_FONTDATA->m_faceName;
 292 }
 293
 294 int wxFont::GetFamily() const
 295 {
 296     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 297
 298     return M_FONTDATA->m_family;
 299 }
 300
 301 int wxFont::GetStyle() const
 302 {
 303     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 304
 305     return M_FONTDATA->m_style;
 306 }
 307
 308 int wxFont::GetWeight() const
 309 {
 310     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 311
 312     return M_FONTDATA->m_weight;
 313 }
 314
 315 bool wxFont::GetUnderlined() const
 316 {
 317     wxCHECK_MSG( Ok(), FALSE, wxT("invalid font") );
 318
 319     return M_FONTDATA->m_underlined;
 320 }
 321
 322
 323 wxFontEncoding wxFont::GetEncoding() const
 324 {
 325     wxCHECK_MSG( Ok(), wxFONTENCODING_DEFAULT, wxT("invalid font") );
 326
 327     return M_FONTDATA->m_encoding;
 328 }
 329
 330 // ----------------------------------------------------------------------------
 331 // change font attributes
 332 // ----------------------------------------------------------------------------
 333
 334 void wxFont::SetPointSize(int pointSize)
 335 {
 336     Unshare();
 337
 338     M_FONTDATA->m_pointSize = pointSize;
 339 }
 340
 341 void wxFont::SetFamily(int family)
 342 {
 343     Unshare();
 344
 345     M_FONTDATA->m_family = family;
 346 }
 347
 348 void wxFont::SetStyle(int style)
 349 {
 350     Unshare();
 351
 352     M_FONTDATA->m_style = style;
 353 }
 354
 355 void wxFont::SetWeight(int weight)
 356 {
 357     Unshare();
 358
 359     M_FONTDATA->m_weight = weight;
 360 }
 361
 362 void wxFont::SetFaceName(const wxString& faceName)
 363 {
 364     Unshare();
 365
 366     M_FONTDATA->m_faceName = faceName;
 367 }
 368
 369 void wxFont::SetUnderlined(bool underlined)
 370 {
 371     Unshare();
 372
 373     M_FONTDATA->m_underlined = underlined;
 374 }
 375
 376 void wxFont::SetEncoding(wxFontEncoding encoding)
 377 {
 378     Unshare();
 379
 380     M_FONTDATA->m_encoding = encoding;
 381 }
 382
 383 // ----------------------------------------------------------------------------
 384 // get internal representation of font
 385 // ----------------------------------------------------------------------------
 386
 387 GdkFont *wxFont::GetInternalFont( float scale ) const
 388 {
 389     if (!Ok())
 390     {
 391         wxFAIL_MSG( wxT("invalid font") );
 392
 393         return (GdkFont*) NULL;
 394     }
 395
 396     long int_scale = long(scale * 100.0 + 0.5); /* key for fontlist */
 397     int point_scale = (int)((M_FONTDATA->m_pointSize * 10 * int_scale) / 100);
 398     GdkFont *font = (GdkFont *) NULL;
 399
 400     wxNode *node = M_FONTDATA->m_scaled_xfonts.Find(int_scale);
 401     if (node)
 402     {
 403         font = (GdkFont*)node->Data();
 404     }
 405     else
 406     {
 407 #if 0
 408         if ((int_scale == 100) &&
 409                 (M_FONTDATA->m_family == wxSWISS) &&
 410                 (M_FONTDATA->m_style == wxNORMAL) &&
 411                 (M_FONTDATA->m_pointSize == 12) &&
 412                 (M_FONTDATA->m_weight == wxNORMAL) &&
 413                 (M_FONTDATA->m_underlined == FALSE))
 414         {
 415             font = gdk_font_load( "-adobe-helvetica-medium-r-normal--*-120-*-*-*-*-*-*" );
 416         }
 417         else
 418 #endif // 0
 419         {
 420             font = wxLoadQueryNearestFont( point_scale,
 421                                            M_FONTDATA->m_family,
 422                                            M_FONTDATA->m_style,
 423                                            M_FONTDATA->m_weight,
 424                                            M_FONTDATA->m_underlined,
 425                                            M_FONTDATA->m_faceName,
 426                                            M_FONTDATA->m_encoding );
 427         }
 428
 429         M_FONTDATA->m_scaled_xfonts.Append( int_scale, (wxObject*)font );
 430     }
 431
 432     if (!font)
 433     {
 434         wxLogError(wxT("could not load any font"));
 435     }
 436
 437     return font;
 438 }
 439