src/frontends/qt3/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 #ifdef Q_WS_WIN
  55 #include "windows.h"
  56 #include "support/os.h"
  57 #include "support/package.h"
  58 #include "support/path.h"
  59 using lyx::support::addName;
  60 using lyx::support::addPath;
  61 using lyx::support::package;
  62 namespace os = lyx::support::os;
  63 string const win_fonts_truetype[] = {"cmex10", "cmmi10", "cmr10", "cmsy10",
  64         "eufm10", "msam10", "msbm10", "wasy10"};
  65 const int num_fonts_truetype = sizeof(win_fonts_truetype) / sizeof(*win_fonts_truetype);
  66 #endif
  67
  68 void FontLoader::initFontPath()
  69 {
  70 #ifdef Q_WS_MACX
  71         CFBundleRef  myAppBundle = CFBundleGetMainBundle();
  72         CFURLRef  myAppResourcesURL, FontsURL;
  73         FSRef  fontDirRef;
  74         FSSpec  fontDirSpec;
  75         CFStringRef  filePath = CFStringCreateWithBytes(kCFAllocatorDefault,
  76                                         (UInt8 *) "Fonts", strlen("Fonts"),
  77                                         kCFStringEncodingISOLatin1, false);
  78
  79         myAppResourcesURL = CFBundleCopyResourcesDirectoryURL(myAppBundle);
  80         FontsURL = CFURLCreateCopyAppendingPathComponent(kCFAllocatorDefault,
  81                         myAppResourcesURL, filePath, true);
  82         if (lyxerr.debugging(Debug::FONT)) {
  83                 UInt8  buf[255];
  84                 if (CFURLGetFileSystemRepresentation(FontsURL, true, buf, 255))
  85                         lyxerr << "Adding Fonts directory: " << buf << endl;
  86         }
  87         CFURLGetFSRef (FontsURL, &fontDirRef);
  88         OSStatus err = FSGetCatalogInfo (&fontDirRef, kFSCatInfoNone,
  89                                          NULL, NULL, &fontDirSpec, NULL);
  90         if (err)
  91                 lyxerr << "FSGetCatalogInfo err = " << err << endl;
  92         err = FMActivateFonts (&fontDirSpec, NULL, NULL,
  93                                kFMLocalActivationContext);
  94         if (err)
  95                 lyxerr << "FMActivateFonts err = " << err << endl;
  96 #endif
  97
  98 #ifdef Q_WS_WIN
  99         // Windows only: Add BaKoMa TrueType font resources
 100         string const fonts_dir = addPath(package().system_support(), "fonts");
 101
 102         for (int i = 0 ; i < num_fonts_truetype ; ++i) {
 103                 string const font_current =
 104                         addName(fonts_dir, win_fonts_truetype[i] + ".ttf");
 105                 AddFontResource(os::external_path(font_current).c_str());
 106         }
 107 #endif
 108 }
 109
 110 FontLoader::~FontLoader() {
 111 #ifdef Q_WS_WIN
 112         // Windows only: Remove BaKoMa TrueType font resources
 113         string const fonts_dir = addPath(package().system_support(), "fonts");
 114
 115         for(int i = 0 ; i < num_fonts_truetype ; ++i) {
 116                 string const font_current =
 117                         addName(fonts_dir, win_fonts_truetype[i] + ".ttf");
 118                 RemoveFontResource(os::external_path(font_current).c_str());
 119         }
 120 #endif
 121 }
 122
 123 namespace {
 124
 125 struct symbol_font {
 126         LyXFont::FONT_FAMILY lyx_family;
 127         string family;
 128         string xlfd;
 129 };
 130
 131 symbol_font symbol_fonts[] = {
 132         { LyXFont::SYMBOL_FAMILY,
 133                 "symbol",
 134                 "-*-symbol-*-*-*-*-*-*-*-*-*-*-adobe-fontspecific" },
 135
 136         { LyXFont::CMR_FAMILY,
 137                 "cmr10",
 138                 "-*-cmr10-medium-*-*-*-*-*-*-*-*-*-*-*" },
 139
 140         { LyXFont::CMSY_FAMILY,
 141                 "cmsy10",
 142                 "-*-cmsy10-*-*-*-*-*-*-*-*-*-*-*-*" },
 143
 144         { LyXFont::CMM_FAMILY,
 145                 "cmmi10",
 146                 "-*-cmmi10-medium-*-*-*-*-*-*-*-*-*-*-*" },
 147
 148         { LyXFont::CMEX_FAMILY,
 149                 "cmex10",
 150                 "-*-cmex10-*-*-*-*-*-*-*-*-*-*-*-*" },
 151
 152         { LyXFont::MSA_FAMILY,
 153                 "msam10",
 154                 "-*-msam10-*-*-*-*-*-*-*-*-*-*-*-*" },
 155
 156         { LyXFont::MSB_FAMILY,
 157                 "msbm10",
 158                 "-*-msbm10-*-*-*-*-*-*-*-*-*-*-*-*" },
 159
 160         { LyXFont::EUFRAK_FAMILY,
 161                 "eufm10",
 162                 "-*-eufm10-medium-*-*-*-*-*-*-*-*-*-*-*" },
 163
 164         { LyXFont::WASY_FAMILY,
 165                 "wasy10",
 166                 "-*-wasy10-medium-*-*-*-*-*-*-*-*-*-*-*" }
 167 };
 168
 169 size_t const nr_symbol_fonts = sizeof(symbol_fonts) / sizeof(symbol_font);
 170
 171
 172 string getRawName(string const & family)
 173 {
 174         for (size_t i = 0; i < nr_symbol_fonts; ++i)
 175                 if (family == symbol_fonts[i].family)
 176                         return symbol_fonts[i].xlfd;
 177
 178         lyxerr[Debug::FONT] << "BUG: family not found !" << endl;
 179         return string();
 180 }
 181
 182
 183 string const symbolFamily(LyXFont::FONT_FAMILY family)
 184 {
 185         for (size_t i = 0; i < nr_symbol_fonts; ++i) {
 186                 if (family == symbol_fonts[i].lyx_family)
 187                         return symbol_fonts[i].family;
 188         }
 189         return string();
 190 }
 191
 192
 193 bool isSymbolFamily(LyXFont::FONT_FAMILY family)
 194 {
 195         return family >= LyXFont::SYMBOL_FAMILY &&
 196                 family <= LyXFont::WASY_FAMILY;
 197 }
 198
 199
 200 bool isChosenFont(QFont & font, string const & family)
 201 {
 202         lyxerr[Debug::FONT] << "raw: " << fromqstr(font.rawName()) << endl;
 203
 204         QFontInfo fi(font);
 205
 206         // Note Qt lies about family quite often
 207         lyxerr[Debug::FONT] << "alleged fi family: "
 208                 << fromqstr(fi.family()) << endl;
 209
 210         // So we check rawName first
 211         if (contains(fromqstr(font.rawName()), family)) {
 212                 lyxerr[Debug::FONT] << " got it ";
 213                 return true;
 214         }
 215
 216         // Qt 3.2 beta1 returns "xft" for all xft fonts
 217         if (font.rawName() == "xft") {
 218                 if (contains(fromqstr(fi.family()), family)) {
 219                         lyxerr[Debug::FONT] << " got it (Xft) ";
 220                         return true;
 221                 }
 222         }
 223
 224         return false;
 225 }
 226
 227
 228 pair<QFont, bool> const getSymbolFont(string const & family)
 229 {
 230         lyxerr[Debug::FONT] << "Looking for font family "
 231                 << family << " ... ";
 232         string upper = family;
 233         upper[0] = toupper(family[0]);
 234
 235         QFont font;
 236         font.setFamily(toqstr(family));
 237
 238         if (isChosenFont(font, family)) {
 239                 lyxerr[Debug::FONT] << "normal!" << endl;
 240                 return make_pair<QFont, bool>(font, true);
 241         }
 242
 243         font.setFamily(toqstr(upper));
 244
 245         if (isChosenFont(font, upper)) {
 246                 lyxerr[Debug::FONT] << "upper!" << endl;
 247                 return make_pair<QFont, bool>(font, true);
 248         }
 249
 250         // A simple setFamily() fails on Qt 2
 251
 252         font.setRawName(toqstr(getRawName(family)));
 253
 254         if (isChosenFont(font, family)) {
 255                 lyxerr[Debug::FONT] << "raw version!" << endl;
 256                 return make_pair<QFont, bool>(font, true);
 257         }
 258
 259         lyxerr[Debug::FONT] << " FAILED :-(" << endl;
 260         return make_pair<QFont, bool>(font, false);
 261 }
 262
 263 } // namespace anon
 264
 265
 266 FontLoader::FontLoader()
 267 {
 268         for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1)
 269                 for (int i2 = 0; i2 < 2; ++i2)
 270                         for (int i3 = 0; i3 < 4; ++i3)
 271                                 for (int i4 = 0; i4 < 10; ++i4)
 272                                         fontinfo_[i1][i2][i3][i4] = 0;
 273 }
 274
 275
 276 void FontLoader::update()
 277 {
 278         for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1)
 279                 for (int i2 = 0; i2 < 2; ++i2)
 280                         for (int i3 = 0; i3 < 4; ++i3)
 281                                 for (int i4 = 0; i4 < 10; ++i4) {
 282                                         delete fontinfo_[i1][i2][i3][i4];
 283                                         fontinfo_[i1][i2][i3][i4] = 0;
 284                                 }
 285 }
 286
 287
 288 /////////////////////////////////////////////////
 289
 290
 291 QLFontInfo::QLFontInfo(LyXFont const & f)
 292         : metrics(font)
 293 {
 294
 295         string const pat = symbolFamily(f.family());
 296         if (!pat.empty()) {
 297                 bool tmp;
 298                 boost::tie(font, tmp) = getSymbolFont(pat);
 299         } else {
 300                 switch (f.family()) {
 301                 case LyXFont::ROMAN_FAMILY:
 302                         font.setFamily(toqstr(makeFontName(lyxrc.roman_font_name,
 303                                                     lyxrc.roman_font_foundry)));
 304                         break;
 305                 case LyXFont::SANS_FAMILY:
 306                         font.setFamily(toqstr(makeFontName(lyxrc.sans_font_name,
 307                                                     lyxrc.sans_font_foundry)));
 308                         break;
 309                 case LyXFont::TYPEWRITER_FAMILY:
 310                         font.setFamily(toqstr(makeFontName(lyxrc.typewriter_font_name,
 311                                                     lyxrc.typewriter_font_foundry)));
 312                         break;
 313                 default:
 314                         break;
 315                 }
 316         }
 317
 318         font.setPointSizeFloat(convert<double>(lyxrc.font_sizes[f.size()])
 319                                * lyxrc.zoom / 100.0);
 320
 321         switch (f.series()) {
 322                 case LyXFont::MEDIUM_SERIES:
 323                         font.setWeight(QFont::Normal);
 324                         break;
 325                 case LyXFont::BOLD_SERIES:
 326                         font.setWeight(QFont::Bold);
 327                         break;
 328                 default:
 329                         break;
 330         }
 331
 332         switch (f.realShape()) {
 333                 case LyXFont::ITALIC_SHAPE:
 334                 case LyXFont::SLANTED_SHAPE:
 335                         font.setItalic(true);
 336                         break;
 337                 default:
 338                         break;
 339         }
 340
 341         if (lyxerr.debugging(Debug::FONT)) {
 342                 lyxerr[Debug::FONT] << "Font '" << f.stateText(0)
 343                         << "' matched by\n" << font.rawName() << endl;
 344         }
 345
 346         lyxerr[Debug::FONT] << "The font has size: "
 347                             << font.pointSizeFloat() << endl;
 348
 349         // Is this an exact match?
 350         if (font.exactMatch())
 351                 lyxerr[Debug::FONT] << "This font is an exact match" << endl;
 352         else
 353                 lyxerr[Debug::FONT] << "This font is NOT an exact match"
 354                                     << endl;
 355
 356         lyxerr[Debug::FONT] << "XFLD: " << font.rawName() << endl;
 357
 358         metrics = QFontMetrics(font);
 359 }
 360
 361
 362 int QLFontInfo::width(Uchar val)
 363 {
 364 // Starting with version 3.1.0, Qt/X11 does its own caching of
 365 // character width, so it is not necessary to provide ours.
 366 #if defined (USE_LYX_FONTCACHE)
 367         QLFontInfo::WidthCache::const_iterator cit = widthcache.find(val);
 368         if (cit != widthcache.end())
 369                 return cit->second;
 370
 371         int const w = metrics.width(QChar(val));
 372         widthcache[val] = w;
 373         return w;
 374 #else
 375         return metrics.width(QChar(val));
 376 #endif
 377 }
 378
 379
 380 bool FontLoader::available(LyXFont const & f)
 381 {
 382         if (!lyx_gui::use_gui)
 383                 return false;
 384
 385         static vector<int> cache_set(LyXFont::NUM_FAMILIES, false);
 386         static vector<int> cache(LyXFont::NUM_FAMILIES, false);
 387
 388         LyXFont::FONT_FAMILY family = f.family();
 389         if (cache_set[family])
 390                 return cache[family];
 391         cache_set[family] = true;
 392
 393         string const pat = symbolFamily(family);
 394         if (pat.empty())
 395                 // We don't care about non-symbol fonts
 396                 return false;
 397
 398         pair<QFont, bool> tmp = getSymbolFont(pat);
 399         if (!tmp.second)
 400                 return false;
 401
 402         cache[family] = true;
 403         return true;
 404 }