src/frontends/qt4/qfont_loader.C

   1 /**
   2  * \file FontLoader.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author John Levon
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "qfont_loader.h"
  15 #include "qt_helpers.h"
  16
  17 #include "debug.h"
  18 #include "lyxrc.h"
  19
  20 #include "frontends/lyx_gui.h"
  21
  22 #include "support/convert.h"
  23 #include "support/filetools.h"
  24 #include "support/lstrings.h"
  25 #include "support/systemcall.h"
  26
  27 #include <qfontinfo.h>
  28
  29 #include <boost/tuple/tuple.hpp>
  30
  31 #ifdef Q_WS_X11
  32 #include <qwidget.h>
  33 #include <X11/Xlib.h>
  34 #include <algorithm>
  35 #endif
  36
  37 using lyx::support::contains;
  38 using lyx::support::LibFileSearch;
  39 using lyx::support::OnlyPath;
  40 using lyx::support::QuoteName;
  41 using lyx::support::Systemcall;
  42
  43 using std::endl;
  44 using std::make_pair;
  45
  46 using std::pair;
  47 using std::vector;
  48 using std::string;
  49
  50 #ifdef Q_WS_MACX
  51 #include <ApplicationServices/ApplicationServices.h>
  52 #endif
  53
  54
  55 void FontLoader::initFontPath()
  56 {
  57 #ifdef Q_WS_MACX
  58         CFBundleRef  myAppBundle = CFBundleGetMainBundle();
  59         CFURLRef  myAppResourcesURL, FontsURL;
  60         FSRef  fontDirRef;
  61         FSSpec  fontDirSpec;
  62         CFStringRef  filePath = CFStringCreateWithBytes(kCFAllocatorDefault,
  63                                         (UInt8 *) "Fonts", strlen("Fonts"),
  64                                         kCFStringEncodingISOLatin1, false);
  65
  66         myAppResourcesURL = CFBundleCopyResourcesDirectoryURL(myAppBundle);
  67         FontsURL = CFURLCreateCopyAppendingPathComponent(kCFAllocatorDefault,
  68                         myAppResourcesURL, filePath, true);
  69         if (lyxerr.debugging(Debug::FONT)) {
  70                 UInt8  buf[255];
  71                 if (CFURLGetFileSystemRepresentation(FontsURL, true, buf, 255))
  72                         lyxerr << "Adding Fonts directory: " << buf << endl;
  73         }
  74         CFURLGetFSRef (FontsURL, &fontDirRef);
  75         OSStatus err = FSGetCatalogInfo (&fontDirRef, kFSCatInfoNone,
  76                                          NULL, NULL, &fontDirSpec, NULL);
  77         if (err)
  78                 lyxerr << "FSGetCatalogInfo err = " << err << endl;
  79         err = FMActivateFonts (&fontDirSpec, NULL, NULL,
  80                                kFMLocalActivationContext);
  81         if (err)
  82                 lyxerr << "FMActivateFonts err = " << err << endl;
  83 #endif
  84 }
  85
  86 namespace {
  87
  88 struct symbol_font {
  89         LyXFont::FONT_FAMILY lyx_family;
  90         string family;
  91         string xlfd;
  92 };
  93
  94 symbol_font symbol_fonts[] = {
  95         { LyXFont::SYMBOL_FAMILY,
  96                 "symbol",
  97                 "-*-symbol-*-*-*-*-*-*-*-*-*-*-adobe-fontspecific" },
  98
  99         { LyXFont::CMR_FAMILY,
 100                 "cmr10",
 101                 "-*-cmr10-medium-*-*-*-*-*-*-*-*-*-*-*" },
 102
 103         { LyXFont::CMSY_FAMILY,
 104                 "cmsy10",
 105                 "-*-cmsy10-*-*-*-*-*-*-*-*-*-*-*-*" },
 106
 107         { LyXFont::CMM_FAMILY,
 108                 "cmmi10",
 109                 "-*-cmmi10-medium-*-*-*-*-*-*-*-*-*-*-*" },
 110
 111         { LyXFont::CMEX_FAMILY,
 112                 "cmex10",
 113                 "-*-cmex10-*-*-*-*-*-*-*-*-*-*-*-*" },
 114
 115         { LyXFont::MSA_FAMILY,
 116                 "msam10",
 117                 "-*-msam10-*-*-*-*-*-*-*-*-*-*-*-*" },
 118
 119         { LyXFont::MSB_FAMILY,
 120                 "msbm10",
 121                 "-*-msbm10-*-*-*-*-*-*-*-*-*-*-*-*" },
 122
 123         { LyXFont::EUFRAK_FAMILY,
 124                 "eufm10",
 125                 "-*-eufm10-medium-*-*-*-*-*-*-*-*-*-*-*" },
 126
 127         { LyXFont::WASY_FAMILY,
 128                 "wasy10",
 129                 "-*-wasy10-medium-*-*-*-*-*-*-*-*-*-*-*" }
 130 };
 131
 132 size_t const nr_symbol_fonts = sizeof(symbol_fonts) / sizeof(symbol_font);
 133
 134
 135 string getRawName(string const & family)
 136 {
 137         for (size_t i = 0; i < nr_symbol_fonts; ++i)
 138                 if (family == symbol_fonts[i].family)
 139                         return symbol_fonts[i].xlfd;
 140
 141         lyxerr[Debug::FONT] << "BUG: family not found !" << endl;
 142         return string();
 143 }
 144
 145
 146 string const symbolFamily(LyXFont::FONT_FAMILY family)
 147 {
 148         for (size_t i = 0; i < nr_symbol_fonts; ++i) {
 149                 if (family == symbol_fonts[i].lyx_family)
 150                         return symbol_fonts[i].family;
 151         }
 152         return string();
 153 }
 154
 155
 156 bool isSymbolFamily(LyXFont::FONT_FAMILY family)
 157 {
 158         return family >= LyXFont::SYMBOL_FAMILY &&
 159                 family <= LyXFont::WASY_FAMILY;
 160 }
 161
 162
 163 bool isChosenFont(QFont & font, string const & family)
 164 {
 165         lyxerr[Debug::FONT] << "raw: " << fromqstr(font.rawName()) << endl;
 166
 167         QFontInfo fi(font);
 168
 169         // Note Qt lies about family quite often
 170         lyxerr[Debug::FONT] << "alleged fi family: "
 171                 << fromqstr(fi.family()) << endl;
 172
 173         // So we check rawName first
 174         if (contains(fromqstr(font.rawName()), family)) {
 175                 lyxerr[Debug::FONT] << " got it ";
 176                 return true;
 177         }
 178
 179         // Qt 3.2 beta1 returns "xft" for all xft fonts
 180         if (font.rawName() == "xft") {
 181                 if (contains(fromqstr(fi.family()), family)) {
 182                         lyxerr[Debug::FONT] << " got it (Xft) ";
 183                         return true;
 184                 }
 185         }
 186
 187         return false;
 188 }
 189
 190
 191 pair<QFont, bool> const getSymbolFont(string const & family)
 192 {
 193         lyxerr[Debug::FONT] << "Looking for font family "
 194                 << family << " ... ";
 195         string upper = family;
 196         upper[0] = toupper(family[0]);
 197
 198         QFont font;
 199         font.setFamily(toqstr(family));
 200
 201         if (isChosenFont(font, family)) {
 202                 lyxerr[Debug::FONT] << "normal!" << endl;
 203                 return make_pair<QFont, bool>(font, true);
 204         }
 205
 206         font.setFamily(toqstr(upper));
 207
 208         if (isChosenFont(font, upper)) {
 209                 lyxerr[Debug::FONT] << "upper!" << endl;
 210                 return make_pair<QFont, bool>(font, true);
 211         }
 212
 213         // A simple setFamily() fails on Qt 2
 214
 215         font.setRawName(toqstr(getRawName(family)));
 216
 217         if (isChosenFont(font, family)) {
 218                 lyxerr[Debug::FONT] << "raw version!" << endl;
 219                 return make_pair<QFont, bool>(font, true);
 220         }
 221
 222         lyxerr[Debug::FONT] << " FAILED :-(" << endl;
 223         return make_pair<QFont, bool>(font, false);
 224 }
 225
 226 } // namespace anon
 227
 228
 229 FontLoader::FontLoader()
 230 {
 231         for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1)
 232                 for (int i2 = 0; i2 < 2; ++i2)
 233                         for (int i3 = 0; i3 < 4; ++i3)
 234                                 for (int i4 = 0; i4 < 10; ++i4)
 235                                         fontinfo_[i1][i2][i3][i4] = 0;
 236 }
 237
 238
 239 void FontLoader::update()
 240 {
 241         for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1)
 242                 for (int i2 = 0; i2 < 2; ++i2)
 243                         for (int i3 = 0; i3 < 4; ++i3)
 244                                 for (int i4 = 0; i4 < 10; ++i4) {
 245                                         delete fontinfo_[i1][i2][i3][i4];
 246                                         fontinfo_[i1][i2][i3][i4] = 0;
 247                                 }
 248 }
 249
 250
 251 /////////////////////////////////////////////////
 252
 253
 254 QLFontInfo::QLFontInfo(LyXFont const & f)
 255         : metrics(font)
 256 {
 257
 258         string const pat = symbolFamily(f.family());
 259         if (!pat.empty()) {
 260                 bool tmp;
 261                 boost::tie(font, tmp) = getSymbolFont(pat);
 262         } else {
 263                 switch (f.family()) {
 264                 case LyXFont::ROMAN_FAMILY:
 265                         font.setFamily(toqstr(makeFontName(lyxrc.roman_font_name,
 266                                                     lyxrc.roman_font_foundry)));
 267                         break;
 268                 case LyXFont::SANS_FAMILY:
 269                         font.setFamily(toqstr(makeFontName(lyxrc.sans_font_name,
 270                                                     lyxrc.sans_font_foundry)));
 271                         break;
 272                 case LyXFont::TYPEWRITER_FAMILY:
 273                         font.setFamily(toqstr(makeFontName(lyxrc.typewriter_font_name,
 274                                                     lyxrc.typewriter_font_foundry)));
 275                         break;
 276                 default:
 277                         break;
 278                 }
 279         }
 280
 281         font.setPointSizeFloat(convert<double>(lyxrc.font_sizes[f.size()])
 282                                * lyxrc.zoom / 100.0);
 283
 284         switch (f.series()) {
 285                 case LyXFont::MEDIUM_SERIES:
 286                         font.setWeight(QFont::Normal);
 287                         break;
 288                 case LyXFont::BOLD_SERIES:
 289                         font.setWeight(QFont::Bold);
 290                         break;
 291                 default:
 292                         break;
 293         }
 294
 295         switch (f.realShape()) {
 296                 case LyXFont::ITALIC_SHAPE:
 297                 case LyXFont::SLANTED_SHAPE:
 298                         font.setItalic(true);
 299                         break;
 300                 default:
 301                         break;
 302         }
 303
 304         if (lyxerr.debugging(Debug::FONT)) {
 305                 lyxerr[Debug::FONT] << "Font '" << f.stateText(0)
 306                         << "' matched by\n" << (const char *) font.rawName() << endl;
 307         }
 308
 309         lyxerr[Debug::FONT] << "The font has size: "
 310                             << font.pointSizeFloat() << endl;
 311
 312         // Is this an exact match?
 313         if (font.exactMatch())
 314                 lyxerr[Debug::FONT] << "This font is an exact match" << endl;
 315         else
 316                 lyxerr[Debug::FONT] << "This font is NOT an exact match"
 317                                     << endl;
 318
 319         lyxerr[Debug::FONT] << "XFLD: " << (const char *) font.rawName() << endl;
 320
 321         metrics = QFontMetrics(font);
 322 }
 323
 324
 325 int QLFontInfo::width(Uchar val) const
 326 {
 327 // Starting with version 3.1.0, Qt/X11 does its own caching of
 328 // character width, so it is not necessary to provide ours.
 329 #if defined (USE_LYX_FONTCACHE)
 330         QLFontInfo::WidthCache::const_iterator cit = widthcache.find(val);
 331         if (cit != widthcache.end())
 332                 return cit->second;
 333
 334         int const w = metrics.width(QChar(val));
 335         widthcache[val] = w;
 336         return w;
 337 #else
 338         return metrics.width(QChar(val));
 339 #endif
 340 }
 341
 342
 343 bool FontLoader::available(LyXFont const & f)
 344 {
 345         if (!lyx_gui::use_gui)
 346                 return false;
 347
 348         static vector<int> cache_set(LyXFont::NUM_FAMILIES, false);
 349         static vector<int> cache(LyXFont::NUM_FAMILIES, false);
 350
 351         LyXFont::FONT_FAMILY family = f.family();
 352         if (cache_set[family])
 353                 return cache[family];
 354         cache_set[family] = true;
 355
 356         string const pat = symbolFamily(family);
 357         if (pat.empty())
 358                 // We don't care about non-symbol fonts
 359                 return false;
 360
 361         pair<QFont, bool> tmp = getSymbolFont(pat);
 362         if (!tmp.second)
 363                 return false;
 364
 365         cache[family] = true;
 366         return true;
 367 }