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