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     xFontName = s;
 156     return TRUE;
 157 }
 158
 159 wxString wxNativeFontInfo::ToString() const
 160 {
 161     return xFontName;
 162 }
 163
 164 // ----------------------------------------------------------------------------
 165 // wxFont
 166 // ----------------------------------------------------------------------------
 167
 168 IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject)
 169
 170 void wxFont::Init()
 171 {
 172     if (wxTheFontList)
 173         wxTheFontList->Append( this );
 174 }
 175
 176 wxFont::wxFont(const wxNativeFontInfo& info)
 177 {
 178     Init();
 179
 180     Create(info.ToString());
 181 }
 182
 183 bool wxFont::Create(const wxNativeFontInfo& info)
 184 {
 185     return Create(info.xFontName);
 186 }
 187
 188 bool wxFont::Create( int pointSize,
 189                      int family,
 190                      int style,
 191                      int weight,
 192                      bool underlined,
 193                      const wxString& face,
 194                      wxFontEncoding encoding)
 195 {
 196     m_refData = new wxFontRefData(pointSize, family, style, weight,
 197                                   underlined, face, encoding);
 198
 199     return TRUE;
 200 }
 201
 202 bool wxFont::Create(const wxString& fontname, wxFontEncoding enc)
 203 {
 204     Init();
 205
 206     if( !fontname )
 207     {
 208          *this = wxSystemSettings::GetSystemFont( wxSYS_DEFAULT_GUI_FONT);
 209          return TRUE;
 210     }
 211
 212     m_refData = new wxFontRefData();
 213
 214     M_FONTDATA->m_nativeFontInfo.xFontName = fontname;  // X font name
 215
 216     wxString tmp;
 217
 218     wxStringTokenizer tn( fontname, wxT("-") );
 219
 220     tn.GetNextToken();                           // skip initial empty token
 221     tn.GetNextToken();                           // foundry
 222
 223
 224     M_FONTDATA->m_faceName = tn.GetNextToken();  // family
 225
 226     tmp = tn.GetNextToken().MakeUpper();         // weight
 227     if (tmp == wxT("BOLD")) M_FONTDATA->m_weight = wxBOLD;
 228     if (tmp == wxT("BLACK")) M_FONTDATA->m_weight = wxBOLD;
 229     if (tmp == wxT("EXTRABOLD")) M_FONTDATA->m_weight = wxBOLD;
 230     if (tmp == wxT("DEMIBOLD")) M_FONTDATA->m_weight = wxBOLD;
 231     if (tmp == wxT("ULTRABOLD")) M_FONTDATA->m_weight = wxBOLD;
 232
 233     if (tmp == wxT("LIGHT")) M_FONTDATA->m_weight = wxLIGHT;
 234     if (tmp == wxT("THIN")) M_FONTDATA->m_weight = wxLIGHT;
 235
 236     tmp = tn.GetNextToken().MakeUpper();        // slant
 237     if (tmp == wxT("I")) M_FONTDATA->m_style = wxITALIC;
 238     if (tmp == wxT("O")) M_FONTDATA->m_style = wxITALIC;
 239
 240     tn.GetNextToken();                           // set width
 241     tn.GetNextToken();                           // add. style
 242     tn.GetNextToken();                           // pixel size
 243
 244     tmp = tn.GetNextToken();                     // pointsize
 245     if (tmp != wxT("*"))
 246     {
 247         long num = wxStrtol (tmp.c_str(), (wxChar **) NULL, 10);
 248         M_FONTDATA->m_pointSize = (int)(num / 10);
 249     }
 250
 251     tn.GetNextToken();                           // x-res
 252     tn.GetNextToken();                           // y-res
 253
 254     tmp = tn.GetNextToken().MakeUpper();         // spacing
 255
 256     if (tmp == wxT("M"))
 257         M_FONTDATA->m_family = wxMODERN;
 258     else if (M_FONTDATA->m_faceName == wxT("TIMES"))
 259         M_FONTDATA->m_family = wxROMAN;
 260     else if (M_FONTDATA->m_faceName == wxT("HELVETICA"))
 261         M_FONTDATA->m_family = wxSWISS;
 262     else if (M_FONTDATA->m_faceName == wxT("LUCIDATYPEWRITER"))
 263         M_FONTDATA->m_family = wxTELETYPE;
 264     else if (M_FONTDATA->m_faceName == wxT("LUCIDA"))
 265         M_FONTDATA->m_family = wxDECORATIVE;
 266     else if (M_FONTDATA->m_faceName == wxT("UTOPIA"))
 267         M_FONTDATA->m_family = wxSCRIPT;
 268
 269     tn.GetNextToken();                           // avg width
 270
 271     // deal with font encoding
 272     M_FONTDATA->m_encoding = enc;
 273     if ( M_FONTDATA->m_encoding == wxFONTENCODING_SYSTEM )
 274     {
 275         wxString registry = tn.GetNextToken().MakeUpper(),
 276                  encoding = tn.GetNextToken().MakeUpper();
 277
 278         if ( registry == _T("ISO8859") )
 279         {
 280             int cp;
 281             if ( wxSscanf(encoding, wxT("%d"), &cp) == 1 )
 282             {
 283                 M_FONTDATA->m_encoding =
 284                     (wxFontEncoding)(wxFONTENCODING_ISO8859_1 + cp - 1);
 285             }
 286         }
 287         else if ( registry == _T("MICROSOFT") )
 288         {
 289             int cp;
 290             if ( wxSscanf(encoding, wxT("cp125%d"), &cp) == 1 )
 291             {
 292                 M_FONTDATA->m_encoding =
 293                     (wxFontEncoding)(wxFONTENCODING_CP1250 + cp);
 294             }
 295         }
 296         else if ( registry == _T("KOI8") )
 297         {
 298             M_FONTDATA->m_encoding = wxFONTENCODING_KOI8;
 299         }
 300         //else: unknown encoding - may be give a warning here?
 301         else
 302             return FALSE;
 303     }
 304     return TRUE;
 305 }
 306
 307 void wxFont::Unshare()
 308 {
 309     if (!m_refData)
 310     {
 311         m_refData = new wxFontRefData();
 312     }
 313     else
 314     {
 315         wxFontRefData* ref = new wxFontRefData(*(wxFontRefData*)m_refData);
 316         UnRef();
 317         m_refData = ref;
 318     }
 319 }
 320
 321 wxFont::~wxFont()
 322 {
 323     if (wxTheFontList)
 324         wxTheFontList->DeleteObject( this );
 325 }
 326
 327 // ----------------------------------------------------------------------------
 328 // accessors
 329 // ----------------------------------------------------------------------------
 330
 331 int wxFont::GetPointSize() const
 332 {
 333     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 334
 335     return M_FONTDATA->m_pointSize;
 336 }
 337
 338 wxString wxFont::GetFaceName() const
 339 {
 340     wxCHECK_MSG( Ok(), wxT(""), wxT("invalid font") );
 341
 342     return M_FONTDATA->m_faceName;
 343 }
 344
 345 int wxFont::GetFamily() const
 346 {
 347     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 348
 349     return M_FONTDATA->m_family;
 350 }
 351
 352 int wxFont::GetStyle() const
 353 {
 354     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 355
 356     return M_FONTDATA->m_style;
 357 }
 358
 359 int wxFont::GetWeight() const
 360 {
 361     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 362
 363     return M_FONTDATA->m_weight;
 364 }
 365
 366 bool wxFont::GetUnderlined() const
 367 {
 368     wxCHECK_MSG( Ok(), FALSE, wxT("invalid font") );
 369
 370     return M_FONTDATA->m_underlined;
 371 }
 372
 373
 374 wxFontEncoding wxFont::GetEncoding() const
 375 {
 376     wxCHECK_MSG( Ok(), wxFONTENCODING_DEFAULT, wxT("invalid font") );
 377
 378     return M_FONTDATA->m_encoding;
 379 }
 380
 381 wxNativeFontInfo *wxFont::GetNativeFontInfo() const
 382 {
 383     wxCHECK_MSG( Ok(), (wxNativeFontInfo *)NULL, wxT("invalid font") );
 384
 385     if(M_FONTDATA->m_nativeFontInfo.xFontName.IsEmpty())
 386         GetInternalFont();
 387
 388     return new wxNativeFontInfo(M_FONTDATA->m_nativeFontInfo);
 389 }
 390
 391
 392 // ----------------------------------------------------------------------------
 393 // change font attributes
 394 // ----------------------------------------------------------------------------
 395
 396 void wxFont::SetPointSize(int pointSize)
 397 {
 398     Unshare();
 399
 400     M_FONTDATA->m_pointSize = pointSize;
 401     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 402 }
 403
 404 void wxFont::SetFamily(int family)
 405 {
 406     Unshare();
 407
 408     M_FONTDATA->m_family = family;
 409     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 410 }
 411
 412 void wxFont::SetStyle(int style)
 413 {
 414     Unshare();
 415
 416     M_FONTDATA->m_style = style;
 417     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 418 }
 419
 420 void wxFont::SetWeight(int weight)
 421 {
 422     Unshare();
 423
 424     M_FONTDATA->m_weight = weight;
 425     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 426 }
 427
 428 void wxFont::SetFaceName(const wxString& faceName)
 429 {
 430     Unshare();
 431
 432     M_FONTDATA->m_faceName = faceName;
 433     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 434 }
 435
 436 void wxFont::SetUnderlined(bool underlined)
 437 {
 438     Unshare();
 439
 440     M_FONTDATA->m_underlined = underlined;
 441 }
 442
 443 void wxFont::SetEncoding(wxFontEncoding encoding)
 444 {
 445     Unshare();
 446
 447     M_FONTDATA->m_encoding = encoding;
 448     M_FONTDATA->m_nativeFontInfo.xFontName.Clear();            // invalid now
 449 }
 450
 451 void wxFont::SetNativeFontInfo(const wxNativeFontInfo& info)
 452 {
 453     Unshare();
 454
 455     M_FONTDATA->m_nativeFontInfo = info;
 456 }
 457
 458 // ----------------------------------------------------------------------------
 459 // get internal representation of font
 460 // ----------------------------------------------------------------------------
 461
 462 static GdkFont *g_systemDefaultGuiFont = (GdkFont*) NULL;
 463
 464 GdkFont *GtkGetDefaultGuiFont()
 465 {
 466     if (!g_systemDefaultGuiFont)
 467     {
 468         GtkWidget *widget = gtk_button_new();
 469         GtkStyle *def = gtk_rc_get_style( widget );
 470         if (def)
 471         {
 472             g_systemDefaultGuiFont = gdk_font_ref( def->font );
 473         }
 474         else
 475         {
 476             def = gtk_widget_get_default_style();
 477             if (def)
 478                 g_systemDefaultGuiFont = gdk_font_ref( def->font );
 479         }
 480         gtk_widget_destroy( widget );
 481     }
 482     return g_systemDefaultGuiFont;
 483 }
 484
 485 GdkFont *wxFont::GetInternalFont( float scale ) const
 486 {
 487     if (!Ok())
 488     {
 489         wxFAIL_MSG( wxT("invalid font") );
 490
 491         return (GdkFont*) NULL;
 492     }
 493
 494     long int_scale = long(scale * 100.0 + 0.5); /* key for fontlist */
 495     int point_scale = (int)((M_FONTDATA->m_pointSize * 10 * int_scale) / 100);
 496     GdkFont *font = (GdkFont *) NULL;
 497
 498     wxNode *node = M_FONTDATA->m_scaled_xfonts.Find(int_scale);
 499     if (node)
 500     {
 501         font = (GdkFont*)node->Data();
 502     }
 503     else
 504     {
 505         if (*this == wxSystemSettings::GetSystemFont( wxSYS_DEFAULT_GUI_FONT))
 506         {
 507             font = GtkGetDefaultGuiFont();
 508         }
 509         if (!font)
 510         {
 511             font = wxLoadQueryNearestFont( point_scale,
 512                                            M_FONTDATA->m_family,
 513                                            M_FONTDATA->m_style,
 514                                            M_FONTDATA->m_weight,
 515                                            M_FONTDATA->m_underlined,
 516                                            M_FONTDATA->m_faceName,
 517                                            M_FONTDATA->m_encoding,
 518                                            &M_FONTDATA->m_nativeFontInfo.xFontName );
 519         }
 520
 521         M_FONTDATA->m_scaled_xfonts.Append( int_scale, (wxObject*)font );
 522     }
 523
 524     // it's quite useless to make it a wxCHECK because we're going to crash
 525     // anyhow...
 526     wxASSERT_MSG( font, wxT("could not load any font?") );
 527
 528     return font;
 529 }
 530