src/frontends/qt2/qfont_loader.C

   1 /**
   2  * \file qfont_loader.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 #ifdef __GNUG__
  15 #pragma implementation
  16 #endif
  17
  18 #include "qfont_loader.h"
  19 #include "gettext.h"
  20 #include "debug.h"
  21 #include "lyxrc.h"
  22 #include "BufferView.h"
  23 #include "qt_helpers.h"
  24
  25 #include <qglobal.h>
  26 #include <qfontmetrics.h>
  27 #if QT_VERSION < 300
  28 #include "support/lstrings.h"
  29 #endif
  30
  31 #ifdef Q_WS_X11
  32 #include <qwidget.h>
  33 #include <X11/Xlib.h>
  34 #include "support/systemcall.h"
  35 #include "support/filetools.h"
  36 #endif
  37
  38 using std::endl;
  39
  40
  41 qfont_loader::qfont_loader()
  42 {
  43         for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1) {
  44                 for (int i2 = 0; i2 < 2; ++i2) {
  45                         for (int i3 = 0; i3 < 4; ++i3) {
  46                                 for (int i4 = 0; i4 < 10; ++i4) {
  47                                         fontinfo_[i1][i2][i3][i4] = 0;
  48                                 }
  49                         }
  50                 }
  51         }
  52 }
  53
  54
  55 qfont_loader::~qfont_loader()
  56 {
  57 }
  58
  59
  60 void qfont_loader::update()
  61 {
  62         for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1) {
  63                 for (int i2 = 0; i2 < 2; ++i2) {
  64                         for (int i3 = 0; i3 < 4; ++i3) {
  65                                 for (int i4 = 0; i4 < 10; ++i4) {
  66                                         delete fontinfo_[i1][i2][i3][i4];
  67                                         fontinfo_[i1][i2][i3][i4] = 0;
  68                                 }
  69                         }
  70                 }
  71         }
  72 }
  73
  74
  75 QFont const & qfont_loader::get(LyXFont const & f)
  76 {
  77         QFont const & ret(getfontinfo(f)->font);
  78
  79         if (lyxerr.debugging(Debug::FONT)) {
  80                 lyxerr[Debug::FONT] << "Font '" << f.stateText(0)
  81                         << "' matched by\n" << ret.rawName() << endl;
  82         }
  83
  84         lyxerr[Debug::FONT] << "The font has size: "
  85                             << ret.pointSizeFloat() << endl;
  86
  87         return ret;
  88 }
  89
  90 namespace {
  91
  92 string const symbolPattern(LyXFont::FONT_FAMILY family)
  93 {
  94         switch (family) {
  95         case LyXFont::SYMBOL_FAMILY:
  96                 return "-*-symbol-*-*-*-*-*-*-*-*-*-*-adobe-fontspecific";
  97
  98         case LyXFont::CMR_FAMILY:
  99                 return "-*-cmr10-medium-*-*-*-*-*-*-*-*-*-*-*";
 100
 101         case LyXFont::CMSY_FAMILY:
 102                 return "-*-cmsy10-*-*-*-*-*-*-*-*-*-*-*-*";
 103
 104         case LyXFont::CMM_FAMILY:
 105                 return "-*-cmmi10-medium-*-*-*-*-*-*-*-*-*-*-*";
 106
 107         case LyXFont::CMEX_FAMILY:
 108                 return "-*-cmex10-*-*-*-*-*-*-*-*-*-*-*-*";
 109
 110         case LyXFont::MSA_FAMILY:
 111                 return "-*-msam10-*-*-*-*-*-*-*-*-*-*-*-*";
 112
 113         case LyXFont::MSB_FAMILY:
 114                 return "-*-msbm10-*-*-*-*-*-*-*-*-*-*-*-*";
 115
 116         case LyXFont::EUFRAK_FAMILY:
 117                 return "-*-eufm10-medium-*-*-*-*-*-*-*-*-*-*-*";
 118
 119         case LyXFont::WASY_FAMILY:
 120                 return "-*-wasy10-medium-*-*-*-*-*-*-*-*-*-*-*";
 121
 122         default:
 123                 return string();
 124         }
 125 }
 126
 127 bool addFontPath()
 128 {
 129 #ifdef Q_WS_X11
 130         string const dir =  OnlyPath(LibFileSearch("xfonts", "fonts.dir"));
 131         if (!dir.empty()) {
 132                 QWidget w;
 133                 int n;
 134                 char ** p = XGetFontPath(w.x11Display(), &n);
 135                 if (std::find(p, p + n, dir) != p + n)
 136                         return false;
 137                 lyxerr << "Adding " << dir << " to the font path.\n";
 138                 string const command = "xset fp+ " + dir;
 139                 Systemcall s;
 140                 if (!s.startscript(Systemcall::Wait, command))
 141                         return true;
 142                 lyxerr << "Unable to add font path.\n";
 143         }
 144 #endif
 145         return false;
 146 }
 147
 148 bool isAvailable(QFont const & font, LyXFont const & f) {
 149 #if QT_VERSION >= 300
 150         return font.exactMatch();
 151 #else
 152         string tmp = symbolPattern(f.family());
 153         if (tmp.empty())
 154                 return false;
 155         else
 156                 return token(tmp, '-', 2) ==
 157                         token(font.rawName().latin1(), '-', 2);
 158 #endif
 159 }
 160
 161 } // namespace anon
 162
 163 qfont_loader::font_info::font_info(LyXFont const & f)
 164         : metrics(font)
 165 {
 166
 167         string pat = symbolPattern(f.family());
 168         if (!pat.empty()) {
 169                 static bool first_time = true;
 170                 font.setRawName(pat.c_str());
 171                 if (f.family() != LyXFont::SYMBOL_FAMILY &&
 172                     !isAvailable(font, f) && first_time) {
 173                         first_time = false;
 174                         if (addFontPath()) {
 175                                 font.setRawName(pat.c_str());
 176                         }
 177                 }
 178         } else
 179                 switch (f.family()) {
 180                 case LyXFont::ROMAN_FAMILY:
 181                         font.setFamily(makeFontName(lyxrc.roman_font_name,
 182                                                     lyxrc.roman_font_foundry).c_str());
 183                         break;
 184                 case LyXFont::SANS_FAMILY:
 185                         font.setFamily(makeFontName(lyxrc.sans_font_name,
 186                                                     lyxrc.sans_font_foundry).c_str());
 187                         break;
 188                 case LyXFont::TYPEWRITER_FAMILY:
 189                         font.setFamily(makeFontName(lyxrc.typewriter_font_name,
 190                                                     lyxrc.typewriter_font_foundry).c_str());
 191                         break;
 192                 default:
 193                         break;
 194         }
 195
 196         font.setPointSizeFloat(lyxrc.font_sizes[f.size()]
 197                                * lyxrc.zoom / 100.0);
 198
 199         switch (f.series()) {
 200                 case LyXFont::MEDIUM_SERIES:
 201                         font.setWeight(QFont::Normal);
 202                         break;
 203                 case LyXFont::BOLD_SERIES:
 204                         font.setWeight(QFont::Bold);
 205                         break;
 206         }
 207
 208         switch (f.realShape()) {
 209                 case LyXFont::ITALIC_SHAPE:
 210                 case LyXFont::SLANTED_SHAPE:
 211                         font.setItalic(true);
 212                         break;
 213         }
 214
 215         // Is this an exact match?
 216         if (font.exactMatch()) {
 217                 lyxerr[Debug::FONT] << "This font is an exact match" << endl;
 218         } else {
 219                 lyxerr[Debug::FONT] << "This font is NOT an exact match"
 220                                     << endl;
 221         }
 222
 223         lyxerr[Debug::FONT] << "XFLD: " << font.rawName() << endl;
 224
 225         metrics = QFontMetrics(font);
 226 }
 227
 228
 229 qfont_loader::font_info * qfont_loader::getfontinfo(LyXFont const & f)
 230 {
 231         if (!lyxrc.use_gui) {
 232                 // FIXME
 233         }
 234
 235         font_info * fi = fontinfo_[f.family()][f.series()][f.realShape()][f.size()];
 236         if (fi)
 237                 return fi;
 238
 239         font_info * fi2 = new font_info(f);
 240         fontinfo_[f.family()][f.series()][f.realShape()][f.size()] = fi2;
 241         return fi2;
 242 }
 243
 244
 245 int qfont_loader::charwidth(LyXFont const & f, Uchar val)
 246 {
 247         font_info * fi = getfontinfo(f);
 248
 249         font_info::WidthCache::const_iterator cit = fi->widthcache.find(val);
 250         if (cit != fi->widthcache.end())
 251                 return cit->second;
 252
 253         int const w = fi->metrics.width(QChar(val));
 254         fi->widthcache[val] = w;
 255         return w;
 256 }
 257
 258
 259 bool qfont_loader::available(LyXFont const & f)
 260 {
 261         if (!lyxrc.use_gui)
 262                 return false;
 263
 264         return isAvailable(getfontinfo(f)->font, f);
 265 }