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