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 #include "wx/settings.h"
  30
  31 #include <strings.h>
  32
  33 #include <gdk/gdk.h>
  34 #include <gdk/gdkprivate.h>
  35 #include <gtk/gtk.h>
  36
  37 // ----------------------------------------------------------------------------
  38 // wxFontRefData
  39 // ----------------------------------------------------------------------------
  40
  41 class wxFontRefData : public wxObjectRefData
  42 {
  43 public:
  44     wxFontRefData(int size = wxDEFAULT,
  45                   int family = wxDEFAULT,
  46                   int style = wxDEFAULT,
  47                   int weight = wxDEFAULT,
  48                   bool underlined = FALSE,
  49                   const wxString& faceName = wxEmptyString,
  50                   wxFontEncoding encoding = wxFONTENCODING_DEFAULT);
  51     wxFontRefData( const wxFontRefData& data );
  52     virtual ~wxFontRefData();
  53
  54 protected:
  55     // common part of all ctors
  56     void Init(int pointSize,
  57               int family,
  58               int style,
  59               int weight,
  60               bool underlined,
  61               const wxString& faceName,
  62               wxFontEncoding encoding);
  63
  64 private:
  65     wxList          m_scaled_xfonts;
  66     int             m_pointSize;
  67     int             m_family,
  68                     m_style,
  69                     m_weight;
  70     bool            m_underlined;
  71     wxString        m_faceName;
  72     wxFontEncoding  m_encoding;
  73
  74     wxNativeFontInfo m_nativeFontInfo;
  75
  76     friend class wxFont;
  77 };
  78
  79 // ============================================================================
  80 // implementation
  81 // ============================================================================
  82
  83 // ----------------------------------------------------------------------------
  84 // wxFontRefData
  85 // ----------------------------------------------------------------------------
  86
  87 void wxFontRefData::Init(int pointSize,
  88                          int family,
  89                          int style,
  90                          int weight,
  91                          bool underlined,
  92                          const wxString& faceName,
  93                          wxFontEncoding encoding)
  94 {
  95     if (family == wxDEFAULT)
  96         m_family = wxSWISS;
  97     else
  98         m_family = family;
  99
 100     m_faceName = faceName;
 101
 102     if (style == wxDEFAULT)
 103         m_style = wxNORMAL;
 104     else
 105         m_style = style;
 106
 107     if (weight == wxDEFAULT)
 108         m_weight = wxNORMAL;
 109     else
 110         m_weight = weight;
 111
 112     if (pointSize == wxDEFAULT)
 113         m_pointSize = 12;
 114     else
 115         m_pointSize = pointSize;
 116
 117     m_underlined = underlined;
 118     m_encoding = encoding;
 119 }
 120
 121 wxFontRefData::wxFontRefData( const wxFontRefData& data )
 122     : m_scaled_xfonts(wxKEY_INTEGER)
 123 {
 124     Init(data.m_pointSize, data.m_family, data.m_style, data.m_weight,
 125          data.m_underlined, data.m_faceName, data.m_encoding);
 126 }
 127
 128 wxFontRefData::wxFontRefData(int size, int family, int style,
 129                              int weight, bool underlined,
 130                              const wxString& faceName,
 131                              wxFontEncoding encoding)
 132     : m_scaled_xfonts(wxKEY_INTEGER)
 133 {
 134     Init(size, family, style, weight, underlined, faceName, encoding);
 135 }
 136
 137 wxFontRefData::~wxFontRefData()
 138 {
 139     wxNode *node = m_scaled_xfonts.First();
 140     while (node)
 141     {
 142         GdkFont *font = (GdkFont*)node->Data();
 143         wxNode *next = node->Next();
 144         gdk_font_unref( font );
 145         node = next;
 146     }
 147 }
 148
 149 // ----------------------------------------------------------------------------
 150 // wxNativeFontInfo
 151 // ----------------------------------------------------------------------------
 152
 153 bool wxNativeFontInfo::FromString(const wxString& s)
 154 {
 155     wxStringTokenizer tokenizer(s, _T(";"));
 156
 157     wxString token = tokenizer.GetNextToken();
 158     //
 159     //  Ignore the version for now
 160     //
 161
 162     xFontName = tokenizer.GetNextToken();
 163     if(!xFontName)
 164         return FALSE;
 165
 166     return TRUE;
 167 }
 168
 169 wxString wxNativeFontInfo::ToString() const
 170 {
 171     wxString s;
 172
 173     s.Printf(_T("%d;%s"),
 174              0,                         // version
 175              xFontName.c_str());
 176
 177     return s;
 178 }
 179
 180 // ----------------------------------------------------------------------------
 181 // wxFont
 182 // ----------------------------------------------------------------------------
 183
 184 IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject)
 185
 186 void wxFont::Init()
 187 {
 188     if (wxTheFontList)
 189         wxTheFontList->Append( this );
 190 }
 191
 192 wxFont::wxFont(const wxNativeFontInfo& info)
 193 {
 194     Init();
 195
 196     Create(info.xFontName);
 197 }
 198
 199 bool wxFont::Create(const wxNativeFontInfo& info)
 200 {
 201     return Create(info.xFontName);
 202 }
 203
 204 bool wxFont::Create( int pointSize,
 205                      int family,
 206                      int style,
 207                      int weight,
 208                      bool underlined,
 209                      const wxString& face,
 210                      wxFontEncoding encoding)
 211 {
 212     m_refData = new wxFontRefData(pointSize, family, style, weight,
 213                                   underlined, face, encoding);
 214
 215     return TRUE;
 216 }
 217
 218 bool wxFont::Create(const wxString& fontname, wxFontEncoding enc)
 219 {
 220     if( !fontname )
 221     {
 222          *this = wxSystemSettings::GetSystemFont( wxSYS_DEFAULT_GUI_FONT);
 223          return TRUE;
 224     }
 225
 226     m_refData = new wxFontRefData();
 227
 228     M_FONTDATA->m_nativeFontInfo.xFontName = fontname;  // X font name
 229
 230     wxString tmp;
 231
 232     wxStringTokenizer tn( fontname, wxT("-") );
 233
 234     tn.GetNextToken();                           // skip initial empty token
 235     tn.GetNextToken();                           // foundry
 236
 237
 238     M_FONTDATA->m_faceName = tn.GetNextToken();  // family
 239
 240     tmp = tn.GetNextToken().MakeUpper();         // weight
 241     if (tmp == wxT("BOLD")) M_FONTDATA->m_weight = wxBOLD;
 242     if (tmp == wxT("BLACK")) M_FONTDATA->m_weight = wxBOLD;
 243     if (tmp == wxT("EXTRABOLD")) M_FONTDATA->m_weight = wxBOLD;
 244     if (tmp == wxT("DEMIBOLD")) M_FONTDATA->m_weight = wxBOLD;
 245     if (tmp == wxT("ULTRABOLD")) M_FONTDATA->m_weight = wxBOLD;
 246
 247     if (tmp == wxT("LIGHT")) M_FONTDATA->m_weight = wxLIGHT;
 248     if (tmp == wxT("THIN")) M_FONTDATA->m_weight = wxLIGHT;
 249
 250     tmp = tn.GetNextToken().MakeUpper();        // slant
 251     if (tmp == wxT("I")) M_FONTDATA->m_style = wxITALIC;
 252     if (tmp == wxT("O")) M_FONTDATA->m_style = wxITALIC;
 253
 254     tn.GetNextToken();                           // set width
 255     tn.GetNextToken();                           // add. style
 256     tn.GetNextToken();                           // pixel size
 257
 258     tmp = tn.GetNextToken();                     // pointsize
 259     if (tmp != wxT("*"))
 260     {
 261         long num = wxStrtol (tmp.c_str(), (wxChar **) NULL, 10);
 262         M_FONTDATA->m_pointSize = (int)(num / 10);
 263     }
 264
 265     tn.GetNextToken();                           // x-res
 266     tn.GetNextToken();                           // y-res
 267
 268     tmp = tn.GetNextToken().MakeUpper();         // spacing
 269
 270     if (tmp == wxT("M"))
 271         M_FONTDATA->m_family = wxMODERN;
 272     else if (M_FONTDATA->m_faceName == wxT("TIMES"))
 273         M_FONTDATA->m_family = wxROMAN;
 274     else if (M_FONTDATA->m_faceName == wxT("HELVETICA"))
 275         M_FONTDATA->m_family = wxSWISS;
 276     else if (M_FONTDATA->m_faceName == wxT("LUCIDATYPEWRITER"))
 277         M_FONTDATA->m_family = wxTELETYPE;
 278     else if (M_FONTDATA->m_faceName == wxT("LUCIDA"))
 279         M_FONTDATA->m_family = wxDECORATIVE;
 280     else if (M_FONTDATA->m_faceName == wxT("UTOPIA"))
 281         M_FONTDATA->m_family = wxSCRIPT;
 282
 283     tn.GetNextToken();                           // avg width
 284
 285     // deal with font encoding
 286     M_FONTDATA->m_encoding = enc;
 287     if ( M_FONTDATA->m_encoding == wxFONTENCODING_SYSTEM )
 288     {
 289         wxString registry = tn.GetNextToken().MakeUpper(),
 290                  encoding = tn.GetNextToken().MakeUpper();
 291
 292         if ( registry == _T("ISO8859") )
 293         {
 294             int cp;
 295             if ( wxSscanf(encoding, wxT("%d"), &cp) == 1 )
 296             {
 297                 M_FONTDATA->m_encoding =
 298                     (wxFontEncoding)(wxFONTENCODING_ISO8859_1 + cp - 1);
 299             }
 300         }
 301         else if ( registry == _T("MICROSOFT") )
 302         {
 303             int cp;
 304             if ( wxSscanf(encoding, wxT("cp125%d"), &cp) == 1 )
 305             {
 306                 M_FONTDATA->m_encoding =
 307                     (wxFontEncoding)(wxFONTENCODING_CP1250 + cp);
 308             }
 309         }
 310         else if ( registry == _T("KOI8") )
 311         {
 312             M_FONTDATA->m_encoding = wxFONTENCODING_KOI8;
 313         }
 314         //else: unknown encoding - may be give a warning here?
 315         else
 316             return FALSE;
 317     }
 318     return TRUE;
 319 }
 320
 321 void wxFont::Unshare()
 322 {
 323     if (!m_refData)
 324     {
 325         m_refData = new wxFontRefData();
 326     }
 327     else
 328     {
 329         wxFontRefData* ref = new wxFontRefData(*(wxFontRefData*)m_refData);
 330         UnRef();
 331         m_refData = ref;
 332     }
 333 }
 334
 335 wxFont::~wxFont()
 336 {
 337     if (wxTheFontList)
 338         wxTheFontList->DeleteObject( this );
 339 }
 340
 341 // ----------------------------------------------------------------------------
 342 // accessors
 343 // ----------------------------------------------------------------------------
 344
 345 int wxFont::GetPointSize() const
 346 {
 347     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 348
 349     return M_FONTDATA->m_pointSize;
 350 }
 351
 352 wxString wxFont::GetFaceName() const
 353 {
 354     wxCHECK_MSG( Ok(), wxT(""), wxT("invalid font") );
 355
 356     return M_FONTDATA->m_faceName;
 357 }
 358
 359 int wxFont::GetFamily() const
 360 {
 361     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 362
 363     return M_FONTDATA->m_family;
 364 }
 365
 366 int wxFont::GetStyle() const
 367 {
 368     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 369
 370     return M_FONTDATA->m_style;
 371 }
 372
 373 int wxFont::GetWeight() const
 374 {
 375     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 376
 377     return M_FONTDATA->m_weight;
 378 }
 379
 380 bool wxFont::GetUnderlined() const
 381 {
 382     wxCHECK_MSG( Ok(), FALSE, wxT("invalid font") );
 383
 384     return M_FONTDATA->m_underlined;
 385 }
 386
 387
 388 wxFontEncoding wxFont::GetEncoding() const
 389 {
 390     wxCHECK_MSG( Ok(), wxFONTENCODING_DEFAULT, wxT("invalid font") );
 391
 392     return M_FONTDATA->m_encoding;
 393 }
 394
 395 wxNativeFontInfo *wxFont::GetNativeFontInfo() const
 396 {
 397     wxCHECK_MSG( Ok(), (wxNativeFontInfo *)NULL, wxT("invalid font") );
 398
 399     if(M_FONTDATA->m_nativeFontInfo.xFontName.IsEmpty())
 400         GetInternalFont();
 401
 402     return new wxNativeFontInfo(M_FONTDATA->m_nativeFontInfo);
 403 }
 404
 405
 406 // ----------------------------------------------------------------------------
 407 // change font attributes
 408 // ----------------------------------------------------------------------------
 409
 410 void wxFont::SetPointSize(int pointSize)
 411 {
 412     Unshare();
 413
 414     M_FONTDATA->m_pointSize = pointSize;
 415     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 416 }
 417
 418 void wxFont::SetFamily(int family)
 419 {
 420     Unshare();
 421
 422     M_FONTDATA->m_family = family;
 423     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 424 }
 425
 426 void wxFont::SetStyle(int style)
 427 {
 428     Unshare();
 429
 430     M_FONTDATA->m_style = style;
 431     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 432 }
 433
 434 void wxFont::SetWeight(int weight)
 435 {
 436     Unshare();
 437
 438     M_FONTDATA->m_weight = weight;
 439     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 440 }
 441
 442 void wxFont::SetFaceName(const wxString& faceName)
 443 {
 444     Unshare();
 445
 446     M_FONTDATA->m_faceName = faceName;
 447     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 448 }
 449
 450 void wxFont::SetUnderlined(bool underlined)
 451 {
 452     Unshare();
 453
 454     M_FONTDATA->m_underlined = underlined;
 455 }
 456
 457 void wxFont::SetEncoding(wxFontEncoding encoding)
 458 {
 459     Unshare();
 460
 461     M_FONTDATA->m_encoding = encoding;
 462     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 463 }
 464
 465 void wxFont::SetNativeFontInfo(const wxNativeFontInfo& info)
 466 {
 467     Unshare();
 468
 469     M_FONTDATA->m_nativeFontInfo = info;
 470 }
 471
 472 // ----------------------------------------------------------------------------
 473 // get internal representation of font
 474 // ----------------------------------------------------------------------------
 475
 476 static GdkFont *g_systemDefaultGuiFont = (GdkFont*) NULL;
 477
 478 GdkFont *GtkGetDefaultGuiFont()
 479 {
 480     if (!g_systemDefaultGuiFont)
 481     {
 482         GtkWidget *widget = gtk_button_new();
 483         GtkStyle *def = gtk_rc_get_style( widget );
 484         if (def)
 485         {
 486             g_systemDefaultGuiFont = gdk_font_ref( def->font );
 487         }
 488         else
 489         {
 490             def = gtk_widget_get_default_style();
 491             if (def)
 492                 g_systemDefaultGuiFont = gdk_font_ref( def->font );
 493         }
 494         gtk_widget_destroy( widget );
 495     }
 496     else
 497     {
 498         // already have it, but ref it once more before returning
 499         gdk_font_ref(g_systemDefaultGuiFont);
 500     }
 501
 502     return g_systemDefaultGuiFont;
 503 }
 504
 505 GdkFont *wxFont::GetInternalFont( float scale ) const
 506 {
 507     if (!Ok())
 508     {
 509         wxFAIL_MSG( wxT("invalid font") );
 510
 511         return (GdkFont*) NULL;
 512     }
 513
 514     long int_scale = long(scale * 100.0 + 0.5); /* key for fontlist */
 515     int point_scale = (int)((M_FONTDATA->m_pointSize * 10 * int_scale) / 100);
 516     GdkFont *font = (GdkFont *) NULL;
 517
 518     wxNode *node = M_FONTDATA->m_scaled_xfonts.Find(int_scale);
 519     if (node)
 520     {
 521         font = (GdkFont*)node->Data();
 522     }
 523     else
 524     {
 525         if (*this == wxSystemSettings::GetSystemFont( wxSYS_DEFAULT_GUI_FONT))
 526         {
 527             font = GtkGetDefaultGuiFont();
 528         }
 529         if (!font)
 530         {
 531             font = wxLoadQueryNearestFont( point_scale,
 532                                            M_FONTDATA->m_family,
 533                                            M_FONTDATA->m_style,
 534                                            M_FONTDATA->m_weight,
 535                                            M_FONTDATA->m_underlined,
 536                                            M_FONTDATA->m_faceName,
 537                                            M_FONTDATA->m_encoding,
 538                                            &M_FONTDATA->m_nativeFontInfo.xFontName );
 539         }
 540
 541         M_FONTDATA->m_scaled_xfonts.Append( int_scale, (wxObject*)font );
 542     }
 543
 544     // it's quite useless to make it a wxCHECK because we're going to crash
 545     // anyhow...
 546     wxASSERT_MSG( font, wxT("could not load any font?") );
 547
 548     return font;
 549 }
 550