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