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 #warning crashes ????
  52 #if 0
  53         for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1) {
  54                 for (int i2 = 0; i1 < 2; ++i2) {
  55                         for (int i3 = 0; i1 < 4; ++i3) {
  56                                 for (int i4 = 0; i1 < 10; ++i4) {
  57                                         fontinfo_[i1][i2][i3][i4].reset(0);
  58                                 }
  59                         }
  60                 }
  61         }
  62 #endif
  63 }
  64
  65
  66 QFont const & qfont_loader::get(LyXFont const & f)
  67 {
  68         QFont const & ret(getfontinfo(f)->font);
  69
  70         if (lyxerr.debugging(Debug::FONT)) {
  71                 lyxerr[Debug::FONT] << "Font '" << f.stateText(0)
  72                         << "' matched by\n" << ret.rawName() << endl;
  73         }
  74
  75         lyxerr[Debug::FONT] << "The font has size: "
  76                             << ret.pointSizeFloat() << endl;
  77
  78         return ret;
  79 }
  80
  81 namespace {
  82
  83 string const symbolPattern(LyXFont::FONT_FAMILY family)
  84 {
  85         switch (family) {
  86         case LyXFont::SYMBOL_FAMILY:
  87                 return "-*-symbol-*-*-*-*-*-*-*-*-*-*-adobe-fontspecific";
  88
  89         case LyXFont::CMR_FAMILY:
  90                 return "-*-cmr10-medium-*-*-*-*-*-*-*-*-*-*-*";
  91
  92         case LyXFont::CMSY_FAMILY:
  93                 return "-*-cmsy10-*-*-*-*-*-*-*-*-*-*-*-*";
  94
  95         case LyXFont::CMM_FAMILY:
  96                 return "-*-cmmi10-medium-*-*-*-*-*-*-*-*-*-*-*";
  97
  98         case LyXFont::CMEX_FAMILY:
  99                 return "-*-cmex10-*-*-*-*-*-*-*-*-*-*-*-*";
 100
 101         case LyXFont::MSA_FAMILY:
 102                 return "-*-msam10-*-*-*-*-*-*-*-*-*-*-*-*";
 103
 104         case LyXFont::MSB_FAMILY:
 105                 return "-*-msbm10-*-*-*-*-*-*-*-*-*-*-*-*";
 106
 107         case LyXFont::EUFRAK_FAMILY:
 108                 return "-*-eufm10-medium-*-*-*-*-*-*-*-*-*-*-*";
 109
 110         case LyXFont::WASY_FAMILY:
 111                 return "-*-wasy10-medium-*-*-*-*-*-*-*-*-*-*-*";
 112
 113         default:
 114                 return string();
 115         }
 116 }
 117
 118 bool addFontPath()
 119 {
 120 #ifdef Q_WS_X11
 121         string const dir =  OnlyPath(LibFileSearch("xfonts", "fonts.dir"));
 122         if (!dir.empty()) {
 123                 QWidget w;
 124                 int n;
 125                 char ** p = XGetFontPath(w.x11Display(), &n);
 126                 if (std::find(p, p + n, dir) != p + n)
 127                         return false;
 128                 lyxerr << "Adding " << dir << " to the font path.\n";
 129                 string const command = "xset fp+ " + dir;
 130                 Systemcall s;
 131                 if (!s.startscript(Systemcall::Wait, command))
 132                         return true;
 133                 lyxerr << "Unable to add font path.\n";
 134         }
 135 #endif
 136         return false;
 137 }
 138
 139 bool isAvailable(QFont const & font, LyXFont const & f) {
 140 #if QT_VERSION >= 300
 141         return font.exactMatch();
 142 #else
 143         string tmp = symbolPattern(f.family());
 144         if (tmp.empty())
 145                 return false;
 146         else
 147                 return token(tmp, '-', 2) ==
 148                         token(font.rawName().latin1(), '-', 2);
 149 #endif
 150 }
 151
 152 } // namespace anon
 153
 154 qfont_loader::font_info::font_info(LyXFont const & f)
 155         : metrics(font)
 156 {
 157
 158         string pat = symbolPattern(f.family());
 159         if (!pat.empty()) {
 160                 static bool first_time = true;
 161                 font.setRawName(pat.c_str());
 162                 if (f.family() != LyXFont::SYMBOL_FAMILY &&
 163                     !isAvailable(font, f) && first_time) {
 164                         first_time = false;
 165                         if (addFontPath()) {
 166                                 font.setRawName(pat.c_str());
 167                         }
 168                 }
 169         } else
 170                 switch (f.family()) {
 171                 case LyXFont::ROMAN_FAMILY:
 172                         font.setFamily("times");
 173                         break;
 174                 case LyXFont::SANS_FAMILY:
 175                         font.setFamily("helvetica");
 176                         break;
 177                 case LyXFont::TYPEWRITER_FAMILY:
 178                         font.setFamily("courier");
 179                         break;
 180                 default:
 181                         break;
 182         }
 183
 184         font.setPointSizeFloat(lyxrc.font_sizes[f.size()]
 185                                * lyxrc.zoom / 100.0);
 186
 187         // FIXME: lyxrc, check for failure etc.
 188
 189         switch (f.series()) {
 190                 case LyXFont::MEDIUM_SERIES:
 191                         font.setWeight(QFont::Normal);
 192                         break;
 193                 case LyXFont::BOLD_SERIES:
 194                         font.setWeight(QFont::Bold);
 195                         break;
 196         }
 197
 198         switch (f.realShape()) {
 199                 case LyXFont::ITALIC_SHAPE:
 200                 case LyXFont::SLANTED_SHAPE:
 201                         font.setItalic(true);
 202                         break;
 203         }
 204
 205         // Is this an exact match?
 206         if (font.exactMatch()) {
 207                 lyxerr[Debug::FONT] << "This font is an exact match" << endl;
 208         } else {
 209                 lyxerr[Debug::FONT] << "This font is NOT an exact match"
 210                                     << endl;
 211         }
 212
 213         lyxerr[Debug::FONT] << "XFLD: " << font.rawName() << endl;
 214
 215         metrics = QFontMetrics(font);
 216 }
 217
 218
 219 qfont_loader::font_info const * qfont_loader::getfontinfo(LyXFont const & f)
 220 {
 221         if (!lyxrc.use_gui) {
 222                 // FIXME
 223         }
 224
 225         font_info * fi = fontinfo_[f.family()][f.series()][f.realShape()][f.size()].get();
 226         if (!fi) {
 227                 fi = new font_info(f);
 228                 fontinfo_[f.family()][f.series()][f.realShape()][f.size()].reset(fi);
 229         }
 230
 231         return fi;
 232 }
 233
 234
 235 bool qfont_loader::available(LyXFont const & f)
 236 {
 237         if (!lyxrc.use_gui)
 238                 return false;
 239
 240         return isAvailable(getfontinfo(f)->font, f);
 241 }