src/frontends/qt4/FontLoader.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 "FontLoader.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
  39 using std::endl;
  40 using std::make_pair;
  41
  42 using std::pair;
  43 using std::vector;
  44 using std::string;
  45
  46 #ifdef Q_WS_MACX
  47 #include <ApplicationServices/ApplicationServices.h>
  48 #endif
  49
  50 #ifdef Q_WS_WIN
  51 #include "windows.h"
  52 #include "support/os.h"
  53 #include "support/package.h"
  54 #include "support/path.h"
  55 using lyx::support::addName;
  56 using lyx::support::addPath;
  57 using lyx::support::package;
  58 namespace os = lyx::support::os;
  59 string const win_fonts_truetype[] = {"cmex10", "cmmi10", "cmr10", "cmsy10",
  60         "eufm10", "msam10", "msbm10", "wasy10"};
  61 const int num_fonts_truetype = sizeof(win_fonts_truetype) / sizeof(*win_fonts_truetype);
  62 #endif
  63
  64 void FontLoader::initFontPath()
  65 {
  66 #ifdef Q_WS_MACX
  67         CFBundleRef  myAppBundle = CFBundleGetMainBundle();
  68         CFURLRef  myAppResourcesURL, FontsURL;
  69         FSRef  fontDirRef;
  70         FSSpec  fontDirSpec;
  71         CFStringRef  filePath = CFStringCreateWithBytes(kCFAllocatorDefault,
  72                                         (UInt8 *) "Fonts", strlen("Fonts"),
  73                                         kCFStringEncodingISOLatin1, false);
  74
  75         myAppResourcesURL = CFBundleCopyResourcesDirectoryURL(myAppBundle);
  76         FontsURL = CFURLCreateCopyAppendingPathComponent(kCFAllocatorDefault,
  77                         myAppResourcesURL, filePath, true);
  78         if (lyxerr.debugging(Debug::FONT)) {
  79                 UInt8  buf[255];
  80                 if (CFURLGetFileSystemRepresentation(FontsURL, true, buf, 255))
  81                         lyxerr << "Adding Fonts directory: " << buf << endl;
  82         }
  83         CFURLGetFSRef (FontsURL, &fontDirRef);
  84         OSStatus err = FSGetCatalogInfo (&fontDirRef, kFSCatInfoNone,
  85                                          NULL, NULL, &fontDirSpec, NULL);
  86         if (err)
  87                 lyxerr << "FSGetCatalogInfo err = " << err << endl;
  88         err = FMActivateFonts (&fontDirSpec, NULL, NULL,
  89                                kFMLocalActivationContext);
  90         if (err)
  91                 lyxerr << "FMActivateFonts err = " << err << endl;
  92 #endif
  93
  94 #ifdef Q_WS_WIN
  95         // Windows only: Add BaKoMa TrueType font resources
  96         string const fonts_dir = addPath(package().system_support(), "fonts");
  97
  98         for (int i = 0 ; i < num_fonts_truetype ; ++i) {
  99                 string const font_current =
 100                         addName(fonts_dir, win_fonts_truetype[i] + ".ttf");
 101                 AddFontResource(os::external_path(font_current).c_str());
 102         }
 103 #endif
 104 }
 105
 106 FontLoader::~FontLoader() {
 107 #ifdef Q_WS_WIN
 108         // Windows only: Remove BaKoMa TrueType font resources
 109         string const fonts_dir = addPath(package().system_support(), "fonts");
 110
 111         for(int i = 0 ; i < num_fonts_truetype ; ++i) {
 112                 string const font_current =
 113                         addName(fonts_dir, win_fonts_truetype[i] + ".ttf");
 114                 RemoveFontResource(os::external_path(font_current).c_str());
 115         }
 116 #endif
 117 }
 118
 119 namespace {
 120
 121 struct symbol_font {
 122         LyXFont::FONT_FAMILY lyx_family;
 123         string family;
 124         string xlfd;
 125 };
 126
 127 symbol_font symbol_fonts[] = {
 128         { LyXFont::SYMBOL_FAMILY,
 129                 "symbol",
 130                 "-*-symbol-*-*-*-*-*-*-*-*-*-*-adobe-fontspecific" },
 131
 132         { LyXFont::CMR_FAMILY,
 133                 "cmr10",
 134                 "-*-cmr10-medium-*-*-*-*-*-*-*-*-*-*-*" },
 135
 136         { LyXFont::CMSY_FAMILY,
 137                 "cmsy10",
 138                 "-*-cmsy10-*-*-*-*-*-*-*-*-*-*-*-*" },
 139
 140         { LyXFont::CMM_FAMILY,
 141                 "cmmi10",
 142                 "-*-cmmi10-medium-*-*-*-*-*-*-*-*-*-*-*" },
 143
 144         { LyXFont::CMEX_FAMILY,
 145                 "cmex10",
 146                 "-*-cmex10-*-*-*-*-*-*-*-*-*-*-*-*" },
 147
 148         { LyXFont::MSA_FAMILY,
 149                 "msam10",
 150                 "-*-msam10-*-*-*-*-*-*-*-*-*-*-*-*" },
 151
 152         { LyXFont::MSB_FAMILY,
 153                 "msbm10",
 154                 "-*-msbm10-*-*-*-*-*-*-*-*-*-*-*-*" },
 155
 156         { LyXFont::EUFRAK_FAMILY,
 157                 "eufm10",
 158                 "-*-eufm10-medium-*-*-*-*-*-*-*-*-*-*-*" },
 159
 160         { LyXFont::WASY_FAMILY,
 161                 "wasy10",
 162                 "-*-wasy10-medium-*-*-*-*-*-*-*-*-*-*-*" }
 163 };
 164
 165 size_t const nr_symbol_fonts = sizeof(symbol_fonts) / sizeof(symbol_font);
 166
 167
 168 string getRawName(string const & family)
 169 {
 170         for (size_t i = 0; i < nr_symbol_fonts; ++i)
 171                 if (family == symbol_fonts[i].family)
 172                         return symbol_fonts[i].xlfd;
 173
 174         lyxerr[Debug::FONT] << "BUG: family not found !" << endl;
 175         return string();
 176 }
 177
 178
 179 string const symbolFamily(LyXFont::FONT_FAMILY family)
 180 {
 181         for (size_t i = 0; i < nr_symbol_fonts; ++i) {
 182                 if (family == symbol_fonts[i].lyx_family)
 183                         return symbol_fonts[i].family;
 184         }
 185         return string();
 186 }
 187
 188
 189 bool isSymbolFamily(LyXFont::FONT_FAMILY family)
 190 {
 191         return family >= LyXFont::SYMBOL_FAMILY &&
 192                 family <= LyXFont::WASY_FAMILY;
 193 }
 194
 195
 196 bool isChosenFont(QFont & font, string const & family)
 197 {
 198         lyxerr[Debug::FONT] << "raw: " << fromqstr(font.rawName()) << endl;
 199
 200         QFontInfo fi(font);
 201
 202         // Note Qt lies about family quite often
 203         lyxerr[Debug::FONT] << "alleged fi family: "
 204                 << fromqstr(fi.family()) << endl;
 205
 206         // So we check rawName first
 207         if (contains(fromqstr(font.rawName()), family)) {
 208                 lyxerr[Debug::FONT] << " got it ";
 209                 return true;
 210         }
 211
 212         // Qt 3.2 beta1 returns "xft" for all xft fonts
 213         // Qt 4.1 returns "Multi" for all ? xft fonts
 214         if (font.rawName() == "xft" || font.rawName() == "Multi") {
 215                 if (contains(fromqstr(fi.family()), family)) {
 216                         lyxerr[Debug::FONT] << " got it (Xft) ";
 217                         return true;
 218                 }
 219         }
 220
 221         return false;
 222 }
 223
 224
 225 pair<QFont, bool> const getSymbolFont(string const & family)
 226 {
 227         lyxerr[Debug::FONT] << "Looking for font family "
 228                 << family << " ... ";
 229         string upper = family;
 230         upper[0] = toupper(family[0]);
 231
 232         QFont font;
 233         font.setFamily(toqstr(family));
 234
 235         if (isChosenFont(font, family)) {
 236                 lyxerr[Debug::FONT] << "normal!" << endl;
 237                 return make_pair<QFont, bool>(font, true);
 238         }
 239
 240         font.setFamily(toqstr(upper));
 241
 242         if (isChosenFont(font, upper)) {
 243                 lyxerr[Debug::FONT] << "upper!" << endl;
 244                 return make_pair<QFont, bool>(font, true);
 245         }
 246
 247         // A simple setFamily() fails on Qt 2
 248
 249         font.setRawName(toqstr(getRawName(family)));
 250
 251         if (isChosenFont(font, family)) {
 252                 lyxerr[Debug::FONT] << "raw version!" << endl;
 253                 return make_pair<QFont, bool>(font, true);
 254         }
 255
 256         lyxerr[Debug::FONT] << " FAILED :-(" << endl;
 257         return make_pair<QFont, bool>(font, false);
 258 }
 259
 260 } // namespace anon
 261
 262
 263 FontLoader::FontLoader()
 264 {
 265         for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1)
 266                 for (int i2 = 0; i2 < 2; ++i2)
 267                         for (int i3 = 0; i3 < 4; ++i3)
 268                                 for (int i4 = 0; i4 < 10; ++i4)
 269                                         fontinfo_[i1][i2][i3][i4] = 0;
 270 }
 271
 272
 273 void FontLoader::update()
 274 {
 275         for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1)
 276                 for (int i2 = 0; i2 < 2; ++i2)
 277                         for (int i3 = 0; i3 < 4; ++i3)
 278                                 for (int i4 = 0; i4 < 10; ++i4) {
 279                                         delete fontinfo_[i1][i2][i3][i4];
 280                                         fontinfo_[i1][i2][i3][i4] = 0;
 281                                 }
 282 }
 283
 284
 285 /////////////////////////////////////////////////
 286
 287
 288 QLFontInfo::QLFontInfo(LyXFont const & f)
 289         : metrics(font)
 290 {
 291
 292         string const pat = symbolFamily(f.family());
 293         if (!pat.empty()) {
 294                 bool tmp;
 295                 boost::tie(font, tmp) = getSymbolFont(pat);
 296         } else {
 297                 switch (f.family()) {
 298                 case LyXFont::ROMAN_FAMILY:
 299                         font.setFamily(toqstr(makeFontName(lyxrc.roman_font_name,
 300                                                     lyxrc.roman_font_foundry)));
 301                         break;
 302                 case LyXFont::SANS_FAMILY:
 303                         font.setFamily(toqstr(makeFontName(lyxrc.sans_font_name,
 304                                                     lyxrc.sans_font_foundry)));
 305                         break;
 306                 case LyXFont::TYPEWRITER_FAMILY:
 307                         font.setFamily(toqstr(makeFontName(lyxrc.typewriter_font_name,
 308                                                     lyxrc.typewriter_font_foundry)));
 309                         break;
 310                 default:
 311                         break;
 312                 }
 313         }
 314
 315         font.setPointSizeF(convert<double>(lyxrc.font_sizes[f.size()])
 316                                * lyxrc.zoom / 100.0);
 317
 318         switch (f.series()) {
 319                 case LyXFont::MEDIUM_SERIES:
 320                         font.setWeight(QFont::Normal);
 321                         break;
 322                 case LyXFont::BOLD_SERIES:
 323                         font.setWeight(QFont::Bold);
 324                         break;
 325                 default:
 326                         break;
 327         }
 328
 329         switch (f.realShape()) {
 330                 case LyXFont::ITALIC_SHAPE:
 331                 case LyXFont::SLANTED_SHAPE:
 332                         font.setItalic(true);
 333                         break;
 334                 default:
 335                         break;
 336         }
 337
 338         if (lyxerr.debugging(Debug::FONT)) {
 339                 lyxerr[Debug::FONT] << "Font '" << f.stateText(0)
 340                         << "' matched by\n" << fromqstr(font.rawName()) << endl;
 341         }
 342
 343         lyxerr[Debug::FONT] << "The font has size: "
 344                             << font.pointSizeF() << endl;
 345
 346         // Is this an exact match?
 347         if (font.exactMatch())
 348                 lyxerr[Debug::FONT] << "This font is an exact match" << endl;
 349         else
 350                 lyxerr[Debug::FONT] << "This font is NOT an exact match"
 351                                     << endl;
 352
 353         lyxerr[Debug::FONT] << "XFLD: " << fromqstr(font.rawName()) << endl;
 354
 355         metrics = QFontMetrics(font);
 356 }
 357
 358
 359 int QLFontInfo::width(Uchar val)
 360 {
 361 // Starting with version 3.1.0, Qt/X11 does its own caching of
 362 // character width, so it is not necessary to provide ours.
 363 #if defined (USE_LYX_FONTCACHE)
 364         QLFontInfo::WidthCache::const_iterator cit = widthcache.find(val);
 365         if (cit != widthcache.end())
 366                 return cit->second;
 367
 368         int const w = metrics.width(QChar(val));
 369         widthcache[val] = w;
 370         return w;
 371 #else
 372         return metrics.width(QChar(val));
 373 #endif
 374 }
 375
 376
 377 bool FontLoader::available(LyXFont const & f)
 378 {
 379         if (!lyx_gui::use_gui)
 380                 return false;
 381
 382         static vector<int> cache_set(LyXFont::NUM_FAMILIES, false);
 383         static vector<int> cache(LyXFont::NUM_FAMILIES, false);
 384
 385         LyXFont::FONT_FAMILY family = f.family();
 386         if (cache_set[family])
 387                 return cache[family];
 388         cache_set[family] = true;
 389
 390         string const pat = symbolFamily(family);
 391         if (pat.empty())
 392                 // We don't care about non-symbol fonts
 393                 return false;
 394
 395         pair<QFont, bool> tmp = getSymbolFont(pat);
 396         if (!tmp.second)
 397                 return false;
 398
 399         cache[family] = true;
 400         return true;
 401 }