| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: mgl/fontutil.cpp |
| 3 | // Purpose: Font helper functions for MGL |
| 4 | // Author: Vaclav Slavik |
| 5 | // Created: 2001/04/29 |
| 6 | // RCS-ID: $Id$ |
| 7 | // Copyright: (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com) |
| 8 | // Licence: wxWindows licence |
| 9 | ///////////////////////////////////////////////////////////////////////////// |
| 10 | |
| 11 | |
| 12 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
| 13 | #pragma implementation "fontutil.h" |
| 14 | #endif |
| 15 | |
| 16 | // For compilers that support precompilation, includes "wx.h". |
| 17 | #include "wx/wxprec.h" |
| 18 | |
| 19 | #ifdef __BORLANDC__ |
| 20 | #pragma hdrstop |
| 21 | #endif |
| 22 | |
| 23 | #include "wx/log.h" |
| 24 | #include "wx/fontutil.h" |
| 25 | #include "wx/encinfo.h" |
| 26 | #include "wx/fontmap.h" |
| 27 | #include "wx/tokenzr.h" |
| 28 | #include "wx/hash.h" |
| 29 | |
| 30 | #include "wx/listimpl.cpp" |
| 31 | #include "wx/sysopt.h" |
| 32 | #include "wx/mgl/private.h" |
| 33 | |
| 34 | #include <mgraph.h> |
| 35 | |
| 36 | // ============================================================================ |
| 37 | // implementation |
| 38 | // ============================================================================ |
| 39 | |
| 40 | // ---------------------------------------------------------------------------- |
| 41 | // wxNativeEncodingInfo |
| 42 | // ---------------------------------------------------------------------------- |
| 43 | |
| 44 | // convert to/from the string representation: format is |
| 45 | // encoding[;facename] |
| 46 | bool wxNativeEncodingInfo::FromString(const wxString& s) |
| 47 | { |
| 48 | wxStringTokenizer tokenizer(s, _T(";")); |
| 49 | |
| 50 | wxString encid = tokenizer.GetNextToken(); |
| 51 | long enc; |
| 52 | if ( !encid.ToLong(&enc) ) |
| 53 | return FALSE; |
| 54 | encoding = (wxFontEncoding)enc; |
| 55 | |
| 56 | // ok even if empty |
| 57 | facename = tokenizer.GetNextToken(); |
| 58 | |
| 59 | return TRUE; |
| 60 | } |
| 61 | |
| 62 | wxString wxNativeEncodingInfo::ToString() const |
| 63 | { |
| 64 | wxString s; |
| 65 | s << (long)encoding; |
| 66 | if ( !!facename ) |
| 67 | { |
| 68 | s << _T(';') << facename; |
| 69 | } |
| 70 | |
| 71 | return s; |
| 72 | } |
| 73 | |
| 74 | // ---------------------------------------------------------------------------- |
| 75 | // common functions |
| 76 | // ---------------------------------------------------------------------------- |
| 77 | |
| 78 | bool wxGetNativeFontEncoding(wxFontEncoding encoding, |
| 79 | wxNativeEncodingInfo *info) |
| 80 | { |
| 81 | wxCHECK_MSG( info, FALSE, _T("bad pointer in wxGetNativeFontEncoding") ); |
| 82 | |
| 83 | if ( encoding == wxFONTENCODING_DEFAULT ) |
| 84 | { |
| 85 | encoding = wxFont::GetDefaultEncoding(); |
| 86 | } |
| 87 | |
| 88 | switch ( encoding ) |
| 89 | { |
| 90 | case wxFONTENCODING_ISO8859_1: |
| 91 | case wxFONTENCODING_ISO8859_2: |
| 92 | case wxFONTENCODING_ISO8859_3: |
| 93 | case wxFONTENCODING_ISO8859_4: |
| 94 | case wxFONTENCODING_ISO8859_5: |
| 95 | case wxFONTENCODING_ISO8859_6: |
| 96 | case wxFONTENCODING_ISO8859_7: |
| 97 | case wxFONTENCODING_ISO8859_8: |
| 98 | case wxFONTENCODING_ISO8859_9: |
| 99 | case wxFONTENCODING_ISO8859_10: |
| 100 | case wxFONTENCODING_ISO8859_11: |
| 101 | case wxFONTENCODING_ISO8859_13: |
| 102 | case wxFONTENCODING_ISO8859_14: |
| 103 | case wxFONTENCODING_ISO8859_15: |
| 104 | info->mglEncoding = MGL_ENCODING_ISO8859_1 + |
| 105 | (encoding - wxFONTENCODING_ISO8859_1); |
| 106 | break; |
| 107 | |
| 108 | case wxFONTENCODING_KOI8: |
| 109 | info->mglEncoding = MGL_ENCODING_KOI8; |
| 110 | break; |
| 111 | |
| 112 | case wxFONTENCODING_CP1250: |
| 113 | case wxFONTENCODING_CP1251: |
| 114 | case wxFONTENCODING_CP1252: |
| 115 | case wxFONTENCODING_CP1253: |
| 116 | case wxFONTENCODING_CP1254: |
| 117 | case wxFONTENCODING_CP1255: |
| 118 | case wxFONTENCODING_CP1256: |
| 119 | case wxFONTENCODING_CP1257: |
| 120 | info->mglEncoding = MGL_ENCODING_CP1250 + |
| 121 | (encoding - wxFONTENCODING_CP1250); |
| 122 | break; |
| 123 | |
| 124 | case wxFONTENCODING_SYSTEM: |
| 125 | info->mglEncoding = MGL_ENCODING_ASCII; |
| 126 | break; |
| 127 | |
| 128 | default: |
| 129 | // encoding not known to MGL |
| 130 | return FALSE; |
| 131 | } |
| 132 | |
| 133 | info->encoding = encoding; |
| 134 | |
| 135 | return TRUE; |
| 136 | } |
| 137 | |
| 138 | bool wxTestFontEncoding(const wxNativeEncodingInfo& info) |
| 139 | { |
| 140 | if ( !info.facename ) |
| 141 | return TRUE; |
| 142 | |
| 143 | wxMGLFontFamily *family = wxTheFontsManager->GetFamily(info.facename); |
| 144 | if ( !family ) |
| 145 | return FALSE; |
| 146 | if ( family->GetInfo()->fontLibType == MGL_BITMAPFONT_LIB ) |
| 147 | return (info.mglEncoding == MGL_ENCODING_ASCII || |
| 148 | info.mglEncoding == MGL_ENCODING_ISO8859_1 || |
| 149 | info.mglEncoding == MGL_ENCODING_ISO8859_15 || |
| 150 | info.mglEncoding == MGL_ENCODING_CP1252); |
| 151 | else |
| 152 | return TRUE; |
| 153 | } |
| 154 | |
| 155 | |
| 156 | // ---------------------------------------------------------------------------- |
| 157 | // wxFontFamily, wxMGLFontInstance, wxMGLFontLibrary |
| 158 | // ---------------------------------------------------------------------------- |
| 159 | |
| 160 | WX_DECLARE_LIST(wxMGLFontInstance, wxMGLFontInstanceList); |
| 161 | WX_DEFINE_LIST(wxMGLFontInstanceList); |
| 162 | WX_DEFINE_LIST(wxMGLFontFamilyList); |
| 163 | |
| 164 | wxMGLFontInstance::wxMGLFontInstance(wxMGLFontLibrary *fontLib, |
| 165 | float pt, bool slant, bool aa) |
| 166 | { |
| 167 | m_fontLib = fontLib; |
| 168 | m_font = NULL; |
| 169 | m_pt = pt; |
| 170 | m_slant = slant; |
| 171 | m_aa = aa; |
| 172 | |
| 173 | float slantAngle = m_slant ? 15.0 : 0.0; |
| 174 | |
| 175 | wxLogTrace("mgl_font", "loading instance of '%s' slant=%i pt=%0.1f aa=%i", |
| 176 | m_fontLib->GetMGLfont_lib_t()->name, m_slant, m_pt, m_aa); |
| 177 | m_font = MGL_loadFontInstance(m_fontLib->GetMGLfont_lib_t(), |
| 178 | m_pt, slantAngle, 0.0, aa); |
| 179 | wxASSERT_MSG( m_font, wxT("Cannot create font instance.") ); |
| 180 | } |
| 181 | |
| 182 | wxMGLFontInstance::~wxMGLFontInstance() |
| 183 | { |
| 184 | wxLogTrace("mgl_font", "unloading instance of '%s' slant=%i pt=%0.1f aa=%i", |
| 185 | m_fontLib->GetMGLfont_lib_t()->name, m_slant, m_pt, m_aa); |
| 186 | if ( m_font ) |
| 187 | MGL_unloadFontInstance(m_font); |
| 188 | } |
| 189 | |
| 190 | wxMGLFontLibrary::wxMGLFontLibrary(const wxString& filename, int type, |
| 191 | wxMGLFontFamily *parentFamily) |
| 192 | { |
| 193 | m_family = parentFamily; |
| 194 | m_type = type; |
| 195 | m_fileName = filename; |
| 196 | m_refs = 0; |
| 197 | m_fontLib = NULL; |
| 198 | |
| 199 | m_instances = new wxMGLFontInstanceList; |
| 200 | m_instances->DeleteContents(TRUE); |
| 201 | } |
| 202 | |
| 203 | wxMGLFontLibrary::~wxMGLFontLibrary() |
| 204 | { |
| 205 | wxLogTrace("mgl_font", "font library dtor '%s'", m_fileName.mb_str()); |
| 206 | delete m_instances; |
| 207 | } |
| 208 | |
| 209 | void wxMGLFontLibrary::IncRef() |
| 210 | { |
| 211 | wxLogTrace("mgl_font", "incRef(%u) '%s'", m_refs, m_fileName.c_str()); |
| 212 | if ( m_refs++ == 0 ) |
| 213 | { |
| 214 | wxLogTrace("mgl_font", "opening library '%s'", m_fileName.mb_str()); |
| 215 | m_fontLib = MGL_openFontLib(m_fileName.mb_str()); |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | void wxMGLFontLibrary::DecRef() |
| 220 | { |
| 221 | wxLogTrace("mgl_font", "decRef(%u) '%s'", m_refs, m_fileName.c_str()); |
| 222 | if ( --m_refs == 0 ) |
| 223 | { |
| 224 | wxLogTrace("mgl_font", "killing instances of '%s'", m_fileName.mb_str()); |
| 225 | m_instances->Clear(); |
| 226 | wxLogTrace("mgl_font", "closing library '%s'", m_fileName.mb_str()); |
| 227 | MGL_closeFontLib(m_fontLib); |
| 228 | m_fontLib = NULL; |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | static int gs_antialiasingThreshold = -1; |
| 233 | |
| 234 | wxMGLFontInstance *wxMGLFontLibrary::GetFontInstance(wxFont *font, |
| 235 | float scale, bool aa) |
| 236 | { |
| 237 | wxASSERT_MSG(m_refs > 0 && m_fontLib, wxT("font library not loaded!")); |
| 238 | |
| 239 | wxString facename; |
| 240 | bool slant; |
| 241 | bool antialiased; |
| 242 | float pt = (float)font->GetPointSize() * scale; |
| 243 | |
| 244 | if ( gs_antialiasingThreshold == -1 ) |
| 245 | { |
| 246 | gs_antialiasingThreshold = 10; |
| 247 | #if wxUSE_SYSTEM_OPTIONS |
| 248 | if ( wxSystemOptions::HasOption(wxT("mgl.aa-threshold")) ) |
| 249 | gs_antialiasingThreshold = |
| 250 | wxSystemOptions::GetOptionInt(wxT("mgl.aa-threshold")); |
| 251 | wxLogTrace("mgl_font", "AA threshold set to %i", gs_antialiasingThreshold); |
| 252 | #endif |
| 253 | } |
| 254 | |
| 255 | // Small characters don't look good when antialiased with the algorithm |
| 256 | // that FreeType uses (mere 2x2 supersampling), so lets disable it AA |
| 257 | // completely for small fonts. |
| 258 | if ( pt <= gs_antialiasingThreshold ) |
| 259 | antialiased = FALSE; |
| 260 | else |
| 261 | antialiased = (m_fontLib->fontLibType == MGL_BITMAPFONT_LIB) ? FALSE : aa; |
| 262 | |
| 263 | slant = (((m_type & wxFONTFACE_ITALIC) == 0) && |
| 264 | (font->GetStyle() == wxSLANT || font->GetStyle() == wxITALIC)); |
| 265 | |
| 266 | // FIXME_MGL -- MGL does not yet support slant, although the API is there |
| 267 | slant = FALSE; |
| 268 | |
| 269 | wxLogTrace("mgl_font", "requested instance of '%s' slant=%i pt=%0.1f aa=%i", |
| 270 | m_fileName.mb_str(), slant, pt, antialiased); |
| 271 | |
| 272 | wxMGLFontInstance *i; |
| 273 | wxMGLFontInstanceList::Node *node; |
| 274 | |
| 275 | for (node = m_instances->GetFirst(); node; node = node->GetNext()) |
| 276 | { |
| 277 | i = node->GetData(); |
| 278 | if ( i->GetPt() == pt && i->GetSlant() == slant && |
| 279 | i->GetAA() == antialiased ) |
| 280 | { |
| 281 | wxLogTrace("mgl_font", " got from cache: slant=%i pt=%0.1f aa=%i", |
| 282 | i->GetSlant(), i->GetPt(), i->GetAA()); |
| 283 | return i; |
| 284 | } |
| 285 | } |
| 286 | |
| 287 | i = new wxMGLFontInstance(this, pt, slant, antialiased); |
| 288 | m_instances->Append(i); |
| 289 | return i; |
| 290 | } |
| 291 | |
| 292 | |
| 293 | wxMGLFontFamily::wxMGLFontFamily(const font_info_t *info) |
| 294 | { |
| 295 | m_name = info->familyName; |
| 296 | m_fontInfo = info; |
| 297 | |
| 298 | if ( info->regularFace[0] == '\0' ) |
| 299 | m_fontLibs[wxFONTFACE_REGULAR] = NULL; |
| 300 | else |
| 301 | m_fontLibs[wxFONTFACE_REGULAR] = |
| 302 | new wxMGLFontLibrary(info->regularFace, wxFONTFACE_REGULAR, this); |
| 303 | |
| 304 | if ( info->italicFace[0] == '\0' ) |
| 305 | m_fontLibs[wxFONTFACE_ITALIC] = NULL; |
| 306 | else |
| 307 | m_fontLibs[wxFONTFACE_ITALIC] = |
| 308 | new wxMGLFontLibrary(info->italicFace, wxFONTFACE_ITALIC, this); |
| 309 | |
| 310 | if ( info->boldFace[0] == '\0' ) |
| 311 | m_fontLibs[wxFONTFACE_BOLD] = NULL; |
| 312 | else |
| 313 | m_fontLibs[wxFONTFACE_BOLD] = |
| 314 | new wxMGLFontLibrary(info->boldFace, wxFONTFACE_BOLD, this); |
| 315 | |
| 316 | if ( info->boldItalicFace[0] == '\0' ) |
| 317 | m_fontLibs[wxFONTFACE_BOLD_ITALIC] = NULL; |
| 318 | else |
| 319 | m_fontLibs[wxFONTFACE_BOLD_ITALIC] = |
| 320 | new wxMGLFontLibrary(info->boldItalicFace, wxFONTFACE_BOLD_ITALIC, this); |
| 321 | |
| 322 | wxLogTrace("mgl_font", "new family '%s' (r=%s, i=%s, b=%s, bi=%s)\n", |
| 323 | info->familyName, info->regularFace, info->italicFace, |
| 324 | info->boldFace, info->boldItalicFace); |
| 325 | } |
| 326 | |
| 327 | wxMGLFontFamily::~wxMGLFontFamily() |
| 328 | { |
| 329 | for (size_t i = 0; i < wxFONTFACE_MAX; i++) |
| 330 | delete m_fontLibs[i]; |
| 331 | } |
| 332 | |
| 333 | bool wxMGLFontFamily::HasFace(int type) const |
| 334 | { |
| 335 | return (m_fontLibs[type] != NULL); |
| 336 | } |
| 337 | |
| 338 | |
| 339 | // ---------------------------------------------------------------------------- |
| 340 | // wxFontsManager |
| 341 | // ---------------------------------------------------------------------------- |
| 342 | |
| 343 | wxMGLFontLibrary *wxFontsManager::GetFontLibrary(wxFont *font) |
| 344 | { |
| 345 | wxMGLFontFamily *family; |
| 346 | int type; |
| 347 | wxString facename = font->GetFaceName(); |
| 348 | |
| 349 | if ( !facename.IsEmpty() ) |
| 350 | family = GetFamily(facename); |
| 351 | else |
| 352 | family = NULL; |
| 353 | |
| 354 | if ( !family ) |
| 355 | { |
| 356 | facename.Empty(); |
| 357 | switch (font->GetFamily()) |
| 358 | { |
| 359 | case wxSCRIPT: |
| 360 | facename = wxT("Script"); |
| 361 | break; |
| 362 | case wxDECORATIVE: |
| 363 | facename = wxT("Charter"); |
| 364 | break; |
| 365 | case wxROMAN: |
| 366 | facename = wxT("Times"); |
| 367 | break; |
| 368 | case wxTELETYPE: |
| 369 | case wxMODERN: |
| 370 | facename = wxT("Courier"); |
| 371 | break; |
| 372 | case wxSWISS: |
| 373 | facename = wxT("Helvetica"); |
| 374 | break; |
| 375 | case wxDEFAULT: |
| 376 | default: |
| 377 | facename = wxT("Helvetica"); |
| 378 | break; |
| 379 | } |
| 380 | |
| 381 | family = GetFamily(facename); |
| 382 | if ( !family ) |
| 383 | { |
| 384 | if ( m_list->GetFirst() ) |
| 385 | family = m_list->GetFirst()->GetData(); |
| 386 | else |
| 387 | wxFAIL_MSG(wxT("Fatal error, no fonts available!")); |
| 388 | } |
| 389 | } |
| 390 | |
| 391 | type = wxFONTFACE_REGULAR; |
| 392 | |
| 393 | if ( font->GetWeight() == wxBOLD ) |
| 394 | type |= wxFONTFACE_BOLD; |
| 395 | |
| 396 | // FIXME_MGL -- this should read "if ( font->GetStyle() == wxITALIC )", |
| 397 | // but since MGL does not yet support slant, we try to display it with |
| 398 | // italic face (better than nothing...) |
| 399 | if ( font->GetStyle() == wxITALIC || font->GetStyle() == wxSLANT ) |
| 400 | { |
| 401 | if ( family->HasFace(type | wxFONTFACE_ITALIC) ) |
| 402 | type |= wxFONTFACE_ITALIC; |
| 403 | } |
| 404 | if ( !family->HasFace(type) ) |
| 405 | { |
| 406 | for (int i = 0; i < wxFONTFACE_MAX; i++) |
| 407 | if ( family->HasFace(i) ) |
| 408 | { |
| 409 | type = i; |
| 410 | break; |
| 411 | } |
| 412 | } |
| 413 | |
| 414 | return family->GetLibrary(type); |
| 415 | } |
| 416 | |
| 417 | static ibool MGLAPI enum_callback(const font_info_t *info, void *cookie) |
| 418 | { |
| 419 | wxFontsManager *db = (wxFontsManager*)cookie; |
| 420 | db->AddFamily(info); |
| 421 | return TRUE; |
| 422 | } |
| 423 | |
| 424 | wxFontsManager::wxFontsManager() |
| 425 | { |
| 426 | m_hash = new wxHashTable(wxKEY_STRING); |
| 427 | m_hash->DeleteContents(FALSE); |
| 428 | m_list = new wxMGLFontFamilyList; |
| 429 | m_list->DeleteContents(TRUE); |
| 430 | MGL_enumerateFonts(enum_callback, (void*)this); |
| 431 | } |
| 432 | |
| 433 | wxFontsManager::~wxFontsManager() |
| 434 | { |
| 435 | delete m_hash; |
| 436 | delete m_list; |
| 437 | } |
| 438 | |
| 439 | void wxFontsManager::AddFamily(const font_info_t *info) |
| 440 | { |
| 441 | wxMGLFontFamily *f = new wxMGLFontFamily(info); |
| 442 | m_hash->Put(f->GetName().Lower(), f); |
| 443 | m_list->Append(f); |
| 444 | } |
| 445 | |
| 446 | wxMGLFontFamily *wxFontsManager::GetFamily(const wxString& name) const |
| 447 | { |
| 448 | return (wxMGLFontFamily*)m_hash->Get(name.Lower()); |
| 449 | } |
| 450 | |
| 451 | |
| 452 | wxFontsManager *wxTheFontsManager = NULL; |