3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Asger Alstrup
8 * Full author contact details are available in file CREDITS
12 #include <cmath> // fabs()
15 #include "xfont_loader.h"
19 #include "lyxrc.h" // lyxrc.font_*
20 #include "BufferView.h"
21 #include "frontends/LyXView.h"
22 #include "frontends/lyx_gui.h"
23 #include "support/systemcall.h"
24 #include "support/filetools.h"
26 #include "lyx_forms.h"
30 // The global fontloader
31 xfont_loader fontloader;
34 // Initialize font loader
35 xfont_loader::xfont_loader()
41 // Destroy font loader
42 xfont_loader::~xfont_loader()
48 // Update fonts after zoom, dpi, font names, or norm change
49 // For now, we just ditch all fonts we have. Later, we should
50 // reuse the ones that are already loaded.
51 void xfont_loader::update()
58 void xfont_loader::reset()
60 // Clear font infos, font structs and font metrics
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 fontinfo[i1][i2][i3] = 0;
65 for (int i4 = 0; i4<10; ++i4) {
66 fontstruct[i1][i2][i3][i4] = 0;
73 void xfont_loader::unload()
76 for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1)
77 for (int i2 = 0; i2 < 2; ++i2)
78 for (int i3 = 0; i3 < 4; ++i3) {
79 if (fontinfo[i1][i2][i3]) {
80 delete fontinfo[i1][i2][i3];
81 fontinfo[i1][i2][i3] = 0;
83 for (int i4 = 0; i4 < 10; ++i4) {
84 if (fontstruct[i1][i2][i3][i4]) {
85 XFreeFont(fl_get_display(), fontstruct[i1][i2][i3][i4]);
86 fontstruct[i1][i2][i3][i4] = 0;
94 string const symbolPattern(LyXFont::FONT_FAMILY family)
97 case LyXFont::SYMBOL_FAMILY:
98 return "-*-symbol-*-*-*-*-*-*-*-*-*-*-adobe-fontspecific";
100 case LyXFont::CMR_FAMILY:
101 return "-*-cmr10-medium-*-*-*-*-*-*-*-*-*-*-*";
103 case LyXFont::CMSY_FAMILY:
104 return "-*-cmsy10-*-*-*-*-*-*-*-*-*-*-*-*";
106 case LyXFont::CMM_FAMILY:
107 return "-*-cmmi10-medium-*-*-*-*-*-*-*-*-*-*-*";
109 case LyXFont::CMEX_FAMILY:
110 return "-*-cmex10-*-*-*-*-*-*-*-*-*-*-*-*";
112 case LyXFont::MSA_FAMILY:
113 return "-*-msam10-*-*-*-*-*-*-*-*-*-*-*-*";
115 case LyXFont::MSB_FAMILY:
116 return "-*-msbm10-*-*-*-*-*-*-*-*-*-*-*-*";
118 case LyXFont::EUFRAK_FAMILY:
119 return "-*-eufm10-medium-*-*-*-*-*-*-*-*-*-*-*";
121 case LyXFont::WASY_FAMILY:
122 return "-*-wasy10-medium-*-*-*-*-*-*-*-*-*-*-*";
129 string const fontName(string const & family, string const & foundry)
131 if (foundry.empty() || foundry == "Xft")
134 return "-"+foundry+"-"+family;
140 string const dir = OnlyPath(LibFileSearch("xfonts", "fonts.dir"));
143 char ** p = XGetFontPath(fl_get_display(), &n);
144 if (std::find(p, p + n, dir) != p + n)
146 lyxerr[Debug::FONT] << "Adding " << dir
147 << " to the font path." << endl;
148 string const command = "xset fp+ " + dir;
150 if (!s.startscript(Systemcall::Wait, command))
152 lyxerr << "Unable to add " << dir << "to the font path."
161 /* Takes care of finding which font that can match the given request. Tries
162 different alternatives. */
163 void xfont_loader::getFontinfo(LyXFont::FONT_FAMILY family,
164 LyXFont::FONT_SERIES series,
165 LyXFont::FONT_SHAPE shape)
167 // Do we have the font info already?
168 if (fontinfo[family][series][shape] != 0)
172 string pat = symbolPattern(family);
174 static bool first_time = true;
175 fontinfo[family][series][shape] = new FontInfo(pat);
176 if (family != LyXFont::SYMBOL_FAMILY &&
177 !fontinfo[family][series][shape]->exist() &&
181 delete fontinfo[family][series][shape];
182 fontinfo[family][series][shape] = new FontInfo(pat);
189 // Normal font. Let's search for an existing name that matches.
193 string norm = lyxrc.font_norm;
196 FontInfo * fi = new FontInfo;
197 fontinfo[family][series][shape] = fi;
199 for (int cfam = 0; cfam < 2; ++cfam) {
200 // Determine family name
202 case LyXFont::ROMAN_FAMILY:
204 case 0: ffamily = fontName(lyxrc.roman_font_name,
205 lyxrc.roman_font_foundry);
207 case 1: ffamily = "-*-times";
211 case LyXFont::SANS_FAMILY:
213 case 0: ffamily = fontName(lyxrc.sans_font_name,
214 lyxrc.sans_font_foundry);
216 case 1: ffamily = "-*-helvetica";
220 case LyXFont::TYPEWRITER_FAMILY:
222 case 0: ffamily = fontName(lyxrc.typewriter_font_name,
223 lyxrc.typewriter_font_foundry);
225 case 1: ffamily = "-*-courier";
232 for (int cser = 0; cser < 4; ++cser) {
233 // Determine series name
235 case LyXFont::MEDIUM_SERIES:
237 case 0: fseries = "-medium"; break;
238 case 1: fseries = "-book"; break;
239 case 2: fseries = "-light";
243 case LyXFont::BOLD_SERIES:
245 case 0: fseries = "-bold"; break;
246 case 1: fseries = "-black"; break;
247 case 2: fseries = "-demi"; break;
248 case 3: fseries = "-demibold";
255 for (int csha = 0; csha < 2; ++csha) {
256 // Determine shape name
258 case LyXFont::UP_SHAPE:
259 case LyXFont::SMALLCAPS_SHAPE:
261 case 0: fshape = "-r";
265 case LyXFont::ITALIC_SHAPE:
267 case 0: fshape = "-i"; break;
268 case 1: fshape = "-o";
272 case LyXFont::SLANTED_SHAPE:
274 case 0: fshape = "-o"; break;
275 case 1: fshape = "-i";
282 fontname = ffamily + fseries + fshape +
283 "-normal-*-*-*-*-*-*-*-" + norm;
284 fi->setPattern(fontname);
294 // A dummy fontstruct used when there is no gui.
297 XFontStruct dummyXFontStruct;
298 bool dummyXFontStructisGood = false;
303 XFontStruct * xfont_loader::doLoad(LyXFont::FONT_FAMILY family,
304 LyXFont::FONT_SERIES series,
305 LyXFont::FONT_SHAPE shape,
306 LyXFont::FONT_SIZE size)
308 if (!lyx_gui::use_gui) {
309 if (!dummyXFontStructisGood) {
310 // no character specific info
311 dummyXFontStruct.per_char = 0;
312 // unit ascent on character displays
313 dummyXFontStruct.ascent = 1;
314 // no descent on character displays
315 dummyXFontStruct.descent = 0;
316 dummyXFontStructisGood = true;
319 return &dummyXFontStruct;
322 getFontinfo(family, series, shape);
323 // FIXME! CHECK! Should we use 72.0 or 72.27? (Lgb)
324 int fsize = int((lyxrc.font_sizes[size] * lyxrc.dpi *
325 (lyxrc.zoom/100.0)) / 72.27 + 0.5);
327 string font = fontinfo[family][series][shape]->getFontname(fsize);
330 lyxerr << "No font matches request. Using 'fixed'." << endl;
331 lyxerr << "Start LyX as 'lyx -dbg 515' to get more information." << endl;
335 XFontStruct * fs = 0;
337 fs = XLoadQueryFont(fl_get_display(), font.c_str());
340 if (font == "fixed") {
341 lyxerr << "We're doomed. Can't get 'fixed' font." << endl;
343 lyxerr << "Could not get font '" << font
344 << "'. Using 'fixed'." << endl;
345 fs = XLoadQueryFont(fl_get_display(), "fixed");
347 } else if (lyxerr.debugging(Debug::FONT)) {
348 // Tell user the font matching
354 // The rest of the attributes are not interesting
355 f.setEmph(LyXFont::INHERIT);
356 f.setUnderbar(LyXFont::INHERIT);
357 f.setNoun(LyXFont::INHERIT);
358 f.setColor(LColor::inherit);
359 lyxerr << "Font '" << f.stateText(0)
360 << "' matched by\n" << font << endl;
363 fontstruct[family][series][shape][size] = fs;
368 bool xfont_loader::available(LyXFont const & f)
370 if (!lyx_gui::use_gui)
373 if (!fontinfo[f.family()][f.series()][f.realShape()])
374 getFontinfo(f.family(), f.series(), f.realShape());
375 return fontinfo[f.family()][f.series()][f.realShape()]->exist();