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();  // courier
 170
 171     tmp = tn.GetNextToken().MakeUpper();
 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();
 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();                           // ?
 187     tn.GetNextToken();                           // pixel size
 188
 189     tmp = tn.GetNextToken();                     // pointsize
 190     int 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();
 197     if (tmp == wxT("M")) M_FONTDATA->m_family = wxMODERN;
 198     else if (M_FONTDATA->m_faceName == wxT("TIMES")) M_FONTDATA->m_family = wxROMAN;
 199     else if (M_FONTDATA->m_faceName == wxT("HELVETICA")) M_FONTDATA->m_family = wxSWISS;
 200     else if (M_FONTDATA->m_faceName == wxT("LUCIDATYPEWRITER")) M_FONTDATA->m_family = wxTELETYPE;
 201     else if (M_FONTDATA->m_faceName == wxT("LUCIDA")) M_FONTDATA->m_family = wxDECORATIVE;
 202     else if (M_FONTDATA->m_faceName == wxT("UTOPIA")) M_FONTDATA->m_family = wxSCRIPT;
 203 }
 204
 205 bool wxFont::Create( int pointSize,
 206                      int family,
 207                      int style,
 208                      int weight,
 209                      bool underlined,
 210                      const wxString& face,
 211                      wxFontEncoding encoding )
 212 {
 213     m_refData = new wxFontRefData(pointSize, family, style, weight,
 214                                   underlined, face, encoding);
 215
 216     return TRUE;
 217 }
 218
 219 void wxFont::Unshare()
 220 {
 221     if (!m_refData)
 222     {
 223         m_refData = new wxFontRefData();
 224     }
 225     else
 226     {
 227         wxFontRefData* ref = new wxFontRefData(*(wxFontRefData*)m_refData);
 228         UnRef();
 229         m_refData = ref;
 230     }
 231 }
 232
 233 wxFont::~wxFont()
 234 {
 235     if (wxTheFontList)
 236         wxTheFontList->DeleteObject( this );
 237 }
 238
 239 // ----------------------------------------------------------------------------
 240 // accessors
 241 // ----------------------------------------------------------------------------
 242
 243 int wxFont::GetPointSize() const
 244 {
 245     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 246
 247     return M_FONTDATA->m_pointSize;
 248 }
 249
 250 wxString wxFont::GetFaceName() const
 251 {
 252     wxCHECK_MSG( Ok(), wxT(""), wxT("invalid font") );
 253
 254     return M_FONTDATA->m_faceName;
 255 }
 256
 257 int wxFont::GetFamily() const
 258 {
 259     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 260
 261     return M_FONTDATA->m_family;
 262 }
 263
 264 int wxFont::GetStyle() const
 265 {
 266     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 267
 268     return M_FONTDATA->m_style;
 269 }
 270
 271 int wxFont::GetWeight() const
 272 {
 273     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 274
 275     return M_FONTDATA->m_weight;
 276 }
 277
 278 bool wxFont::GetUnderlined() const
 279 {
 280     wxCHECK_MSG( Ok(), FALSE, wxT("invalid font") );
 281
 282     return M_FONTDATA->m_underlined;
 283 }
 284
 285
 286 wxFontEncoding wxFont::GetEncoding() const
 287 {
 288     wxCHECK_MSG( Ok(), wxFONTENCODING_DEFAULT, wxT("invalid font") );
 289
 290     return M_FONTDATA->m_encoding;
 291 }
 292
 293 // ----------------------------------------------------------------------------
 294 // change font attributes
 295 // ----------------------------------------------------------------------------
 296
 297 void wxFont::SetPointSize(int pointSize)
 298 {
 299     Unshare();
 300
 301     M_FONTDATA->m_pointSize = pointSize;
 302 }
 303
 304 void wxFont::SetFamily(int family)
 305 {
 306     Unshare();
 307
 308     M_FONTDATA->m_family = family;
 309 }
 310
 311 void wxFont::SetStyle(int style)
 312 {
 313     Unshare();
 314
 315     M_FONTDATA->m_style = style;
 316 }
 317
 318 void wxFont::SetWeight(int weight)
 319 {
 320     Unshare();
 321
 322     M_FONTDATA->m_weight = weight;
 323 }
 324
 325 void wxFont::SetFaceName(const wxString& faceName)
 326 {
 327     Unshare();
 328
 329     M_FONTDATA->m_faceName = faceName;
 330 }
 331
 332 void wxFont::SetUnderlined(bool underlined)
 333 {
 334     Unshare();
 335
 336     M_FONTDATA->m_underlined = underlined;
 337 }
 338
 339 void wxFont::SetEncoding(wxFontEncoding encoding)
 340 {
 341     Unshare();
 342
 343     M_FONTDATA->m_encoding = encoding;
 344 }
 345
 346 // ----------------------------------------------------------------------------
 347 // get internal representation of font
 348 // ----------------------------------------------------------------------------
 349
 350 GdkFont *wxFont::GetInternalFont( float scale ) const
 351 {
 352     if (!Ok())
 353     {
 354         wxFAIL_MSG( wxT("invalid font") );
 355
 356         return (GdkFont*) NULL;
 357     }
 358
 359     long int_scale = long(scale * 100.0 + 0.5); /* key for fontlist */
 360     int point_scale = (M_FONTDATA->m_pointSize * 10 * int_scale) / 100;
 361     GdkFont *font = (GdkFont *) NULL;
 362
 363     wxNode *node = M_FONTDATA->m_scaled_xfonts.Find(int_scale);
 364     if (node)
 365     {
 366         font = (GdkFont*)node->Data();
 367     }
 368     else
 369     {
 370 #if 0
 371         if ((int_scale == 100) &&
 372                 (M_FONTDATA->m_family == wxSWISS) &&
 373                 (M_FONTDATA->m_style == wxNORMAL) &&
 374                 (M_FONTDATA->m_pointSize == 12) &&
 375                 (M_FONTDATA->m_weight == wxNORMAL) &&
 376                 (M_FONTDATA->m_underlined == FALSE))
 377         {
 378             font = gdk_font_load( "-adobe-helvetica-medium-r-normal--*-120-*-*-*-*-*-*" );
 379         }
 380         else
 381 #endif // 0
 382         {
 383             font = wxLoadQueryNearestFont( point_scale,
 384                                            M_FONTDATA->m_family,
 385                                            M_FONTDATA->m_style,
 386                                            M_FONTDATA->m_weight,
 387                                            M_FONTDATA->m_underlined,
 388                                            M_FONTDATA->m_faceName,
 389                                            M_FONTDATA->m_encoding );
 390         }
 391
 392         M_FONTDATA->m_scaled_xfonts.Append( int_scale, (wxObject*)font );
 393     }
 394
 395     if (!font)
 396     {
 397         wxLogError(wxT("could not load any font"));
 398     }
 399
 400     return font;
 401 }
 402