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 }
 189
 190 wxFont::wxFont(const wxNativeFontInfo& info)
 191 {
 192     Init();
 193
 194     Create(info.xFontName);
 195 }
 196
 197 bool wxFont::Create(const wxNativeFontInfo& info)
 198 {
 199     return Create(info.xFontName);
 200 }
 201
 202 bool wxFont::Create( int pointSize,
 203                      int family,
 204                      int style,
 205                      int weight,
 206                      bool underlined,
 207                      const wxString& face,
 208                      wxFontEncoding encoding)
 209 {
 210     m_refData = new wxFontRefData(pointSize, family, style, weight,
 211                                   underlined, face, encoding);
 212
 213     return TRUE;
 214 }
 215
 216 bool wxFont::Create(const wxString& fontname, wxFontEncoding enc)
 217 {
 218     if( !fontname )
 219     {
 220          *this = wxSystemSettings::GetSystemFont( wxSYS_DEFAULT_GUI_FONT);
 221          return TRUE;
 222     }
 223
 224     m_refData = new wxFontRefData();
 225
 226     M_FONTDATA->m_nativeFontInfo.xFontName = fontname;  // X font name
 227
 228     wxString tmp;
 229
 230     wxStringTokenizer tn( fontname, wxT("-") );
 231
 232     tn.GetNextToken();                           // skip initial empty token
 233     tn.GetNextToken();                           // foundry
 234
 235
 236     M_FONTDATA->m_faceName = tn.GetNextToken();  // family
 237
 238     tmp = tn.GetNextToken().MakeUpper();         // weight
 239     if (tmp == wxT("BOLD")) M_FONTDATA->m_weight = wxBOLD;
 240     if (tmp == wxT("BLACK")) M_FONTDATA->m_weight = wxBOLD;
 241     if (tmp == wxT("EXTRABOLD")) M_FONTDATA->m_weight = wxBOLD;
 242     if (tmp == wxT("DEMIBOLD")) M_FONTDATA->m_weight = wxBOLD;
 243     if (tmp == wxT("ULTRABOLD")) M_FONTDATA->m_weight = wxBOLD;
 244
 245     if (tmp == wxT("LIGHT")) M_FONTDATA->m_weight = wxLIGHT;
 246     if (tmp == wxT("THIN")) M_FONTDATA->m_weight = wxLIGHT;
 247
 248     tmp = tn.GetNextToken().MakeUpper();        // slant
 249     if (tmp == wxT("I")) M_FONTDATA->m_style = wxITALIC;
 250     if (tmp == wxT("O")) M_FONTDATA->m_style = wxITALIC;
 251
 252     tn.GetNextToken();                           // set width
 253     tn.GetNextToken();                           // add. style
 254     tn.GetNextToken();                           // pixel size
 255
 256     tmp = tn.GetNextToken();                     // pointsize
 257     if (tmp != wxT("*"))
 258     {
 259         long num = wxStrtol (tmp.c_str(), (wxChar **) NULL, 10);
 260         M_FONTDATA->m_pointSize = (int)(num / 10);
 261     }
 262
 263     tn.GetNextToken();                           // x-res
 264     tn.GetNextToken();                           // y-res
 265
 266     tmp = tn.GetNextToken().MakeUpper();         // spacing
 267
 268     if (tmp == wxT("M"))
 269         M_FONTDATA->m_family = wxMODERN;
 270     else if (M_FONTDATA->m_faceName == wxT("TIMES"))
 271         M_FONTDATA->m_family = wxROMAN;
 272     else if (M_FONTDATA->m_faceName == wxT("HELVETICA"))
 273         M_FONTDATA->m_family = wxSWISS;
 274     else if (M_FONTDATA->m_faceName == wxT("LUCIDATYPEWRITER"))
 275         M_FONTDATA->m_family = wxTELETYPE;
 276     else if (M_FONTDATA->m_faceName == wxT("LUCIDA"))
 277         M_FONTDATA->m_family = wxDECORATIVE;
 278     else if (M_FONTDATA->m_faceName == wxT("UTOPIA"))
 279         M_FONTDATA->m_family = wxSCRIPT;
 280
 281     tn.GetNextToken();                           // avg width
 282
 283     // deal with font encoding
 284     M_FONTDATA->m_encoding = enc;
 285     if ( M_FONTDATA->m_encoding == wxFONTENCODING_SYSTEM )
 286     {
 287         wxString registry = tn.GetNextToken().MakeUpper(),
 288                  encoding = tn.GetNextToken().MakeUpper();
 289
 290         if ( registry == _T("ISO8859") )
 291         {
 292             int cp;
 293             if ( wxSscanf(encoding, wxT("%d"), &cp) == 1 )
 294             {
 295                 M_FONTDATA->m_encoding =
 296                     (wxFontEncoding)(wxFONTENCODING_ISO8859_1 + cp - 1);
 297             }
 298         }
 299         else if ( registry == _T("MICROSOFT") )
 300         {
 301             int cp;
 302             if ( wxSscanf(encoding, wxT("cp125%d"), &cp) == 1 )
 303             {
 304                 M_FONTDATA->m_encoding =
 305                     (wxFontEncoding)(wxFONTENCODING_CP1250 + cp);
 306             }
 307         }
 308         else if ( registry == _T("KOI8") )
 309         {
 310             M_FONTDATA->m_encoding = wxFONTENCODING_KOI8;
 311         }
 312         //else: unknown encoding - may be give a warning here?
 313         else
 314             return FALSE;
 315     }
 316     return TRUE;
 317 }
 318
 319 void wxFont::Unshare()
 320 {
 321     if (!m_refData)
 322     {
 323         m_refData = new wxFontRefData();
 324     }
 325     else
 326     {
 327         wxFontRefData* ref = new wxFontRefData(*(wxFontRefData*)m_refData);
 328         UnRef();
 329         m_refData = ref;
 330     }
 331 }
 332
 333 wxFont::~wxFont()
 334 {
 335 }
 336
 337 // ----------------------------------------------------------------------------
 338 // accessors
 339 // ----------------------------------------------------------------------------
 340
 341 int wxFont::GetPointSize() const
 342 {
 343     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 344
 345     return M_FONTDATA->m_pointSize;
 346 }
 347
 348 wxString wxFont::GetFaceName() const
 349 {
 350     wxCHECK_MSG( Ok(), wxT(""), wxT("invalid font") );
 351
 352     return M_FONTDATA->m_faceName;
 353 }
 354
 355 int wxFont::GetFamily() const
 356 {
 357     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 358
 359     return M_FONTDATA->m_family;
 360 }
 361
 362 int wxFont::GetStyle() const
 363 {
 364     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 365
 366     return M_FONTDATA->m_style;
 367 }
 368
 369 int wxFont::GetWeight() const
 370 {
 371     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 372
 373     return M_FONTDATA->m_weight;
 374 }
 375
 376 bool wxFont::GetUnderlined() const
 377 {
 378     wxCHECK_MSG( Ok(), FALSE, wxT("invalid font") );
 379
 380     return M_FONTDATA->m_underlined;
 381 }
 382
 383
 384 wxFontEncoding wxFont::GetEncoding() const
 385 {
 386     wxCHECK_MSG( Ok(), wxFONTENCODING_DEFAULT, wxT("invalid font") );
 387
 388     return M_FONTDATA->m_encoding;
 389 }
 390
 391 wxNativeFontInfo *wxFont::GetNativeFontInfo() const
 392 {
 393     wxCHECK_MSG( Ok(), (wxNativeFontInfo *)NULL, wxT("invalid font") );
 394
 395     if(M_FONTDATA->m_nativeFontInfo.xFontName.IsEmpty())
 396         GetInternalFont();
 397
 398     return new wxNativeFontInfo(M_FONTDATA->m_nativeFontInfo);
 399 }
 400
 401
 402 // ----------------------------------------------------------------------------
 403 // change font attributes
 404 // ----------------------------------------------------------------------------
 405
 406 void wxFont::SetPointSize(int pointSize)
 407 {
 408     Unshare();
 409
 410     M_FONTDATA->m_pointSize = pointSize;
 411     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 412 }
 413
 414 void wxFont::SetFamily(int family)
 415 {
 416     Unshare();
 417
 418     M_FONTDATA->m_family = family;
 419     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 420 }
 421
 422 void wxFont::SetStyle(int style)
 423 {
 424     Unshare();
 425
 426     M_FONTDATA->m_style = style;
 427     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 428 }
 429
 430 void wxFont::SetWeight(int weight)
 431 {
 432     Unshare();
 433
 434     M_FONTDATA->m_weight = weight;
 435     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 436 }
 437
 438 void wxFont::SetFaceName(const wxString& faceName)
 439 {
 440     Unshare();
 441
 442     M_FONTDATA->m_faceName = faceName;
 443     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 444 }
 445
 446 void wxFont::SetUnderlined(bool underlined)
 447 {
 448     Unshare();
 449
 450     M_FONTDATA->m_underlined = underlined;
 451 }
 452
 453 void wxFont::SetEncoding(wxFontEncoding encoding)
 454 {
 455     Unshare();
 456
 457     M_FONTDATA->m_encoding = encoding;
 458     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 459 }
 460
 461 void wxFont::SetNativeFontInfo(const wxNativeFontInfo& info)
 462 {
 463     Unshare();
 464
 465     M_FONTDATA->m_nativeFontInfo = info;
 466 }
 467
 468 // ----------------------------------------------------------------------------
 469 // get internal representation of font
 470 // ----------------------------------------------------------------------------
 471
 472 static GdkFont *g_systemDefaultGuiFont = (GdkFont*) NULL;
 473
 474 GdkFont *GtkGetDefaultGuiFont()
 475 {
 476     if (!g_systemDefaultGuiFont)
 477     {
 478         GtkWidget *widget = gtk_button_new();
 479         GtkStyle *def = gtk_rc_get_style( widget );
 480         if (def)
 481         {
 482             g_systemDefaultGuiFont = gdk_font_ref( def->font );
 483         }
 484         else
 485         {
 486             def = gtk_widget_get_default_style();
 487             if (def)
 488                 g_systemDefaultGuiFont = gdk_font_ref( def->font );
 489         }
 490         gtk_widget_destroy( widget );
 491     }
 492     else
 493     {
 494         // already have it, but ref it once more before returning
 495         gdk_font_ref(g_systemDefaultGuiFont);
 496     }
 497
 498     return g_systemDefaultGuiFont;
 499 }
 500
 501 GdkFont *wxFont::GetInternalFont( float scale ) const
 502 {
 503     if (!Ok())
 504     {
 505         wxFAIL_MSG( wxT("invalid font") );
 506
 507         return (GdkFont*) NULL;
 508     }
 509
 510     long int_scale = long(scale * 100.0 + 0.5); /* key for fontlist */
 511     int point_scale = (int)((M_FONTDATA->m_pointSize * 10 * int_scale) / 100);
 512     GdkFont *font = (GdkFont *) NULL;
 513
 514     wxNode *node = M_FONTDATA->m_scaled_xfonts.Find(int_scale);
 515     if (node)
 516     {
 517         font = (GdkFont*)node->Data();
 518     }
 519     else
 520     {
 521         if (*this == wxSystemSettings::GetSystemFont( wxSYS_DEFAULT_GUI_FONT))
 522         {
 523             font = GtkGetDefaultGuiFont();
 524         }
 525         if (!font)
 526         {
 527             font = wxLoadQueryNearestFont( point_scale,
 528                                            M_FONTDATA->m_family,
 529                                            M_FONTDATA->m_style,
 530                                            M_FONTDATA->m_weight,
 531                                            M_FONTDATA->m_underlined,
 532                                            M_FONTDATA->m_faceName,
 533                                            M_FONTDATA->m_encoding,
 534                                            &M_FONTDATA->m_nativeFontInfo.xFontName );
 535         }
 536
 537         M_FONTDATA->m_scaled_xfonts.Append( int_scale, (wxObject*)font );
 538     }
 539
 540     // it's quite useless to make it a wxCHECK because we're going to crash
 541     // anyhow...
 542     wxASSERT_MSG( font, wxT("could not load any font?") );
 543
 544     return font;
 545 }
 546