3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Asger Alstrup
9 * Full author contact details are available in file CREDITS.
14 #include "FontLoader.h"
17 #include "GuiFontMetrics.h"
18 #include "qt_helpers.h"
22 #include "support/convert.h"
23 #include "support/debug.h"
24 #include "support/filetools.h"
25 #include "support/lstrings.h"
26 #include "support/Systemcall.h"
27 #include "support/Package.h"
28 #include "support/os.h"
31 #include <QFontDatabase>
33 #include "support/lassert.h"
36 using namespace lyx::support;
38 QString const math_fonts[] = {"cmex10", "cmmi10", "cmr10", "cmsy10",
39 "eufm10", "msam10", "msbm10", "wasy10", "esint10"};
40 int const num_math_fonts = sizeof(math_fonts) / sizeof(*math_fonts);
44 extern docstring const stateText(FontInfo const & f);
49 * Matches Fonts against
50 * actual QFont instances, and also caches metrics.
55 GuiFontInfo(FontInfo const & f);
59 /// Metrics on the font
60 GuiFontMetrics metrics;
66 FontFamily lyx_family;
71 SymbolFont symbol_fonts[] = {
72 { SYMBOL_FAMILY,"symbol", "-*-symbol-*-*-*-*-*-*-*-*-*-*-adobe-fontspecific"},
73 { CMR_FAMILY, "cmr10", "-*-cmr10-medium-*-*-*-*-*-*-*-*-*-*-*" },
74 { CMSY_FAMILY, "cmsy10", "-*-cmsy10-*-*-*-*-*-*-*-*-*-*-*-*" },
75 { CMM_FAMILY, "cmmi10", "-*-cmmi10-medium-*-*-*-*-*-*-*-*-*-*-*" },
76 { CMEX_FAMILY, "cmex10", "-*-cmex10-*-*-*-*-*-*-*-*-*-*-*-*" },
77 { MSA_FAMILY, "msam10", "-*-msam10-*-*-*-*-*-*-*-*-*-*-*-*" },
78 { MSB_FAMILY, "msbm10", "-*-msbm10-*-*-*-*-*-*-*-*-*-*-*-*" },
79 { EUFRAK_FAMILY,"eufm10", "-*-eufm10-medium-*-*-*-*-*-*-*-*-*-*-*" },
80 { WASY_FAMILY, "wasy10", "-*-wasy10-medium-*-*-*-*-*-*-*-*-*-*-*" },
81 { ESINT_FAMILY, "esint10","-*-esint10-medium-*-*-*-*-*-*-*-*-*-*-*" }
84 size_t const nr_symbol_fonts = sizeof(symbol_fonts) / sizeof(symbol_fonts[0]);
87 static GuiFontInfo * fontinfo_[NUM_FAMILIES][2][4][10];
90 /// Get font info (font + metrics) for the given LyX font.
91 // if not cached, create it.
92 GuiFontInfo & fontinfo(FontInfo const & f)
94 LASSERT(f.family() < NUM_FAMILIES, /**/);
95 LASSERT(f.series() < 2, /**/);
96 LASSERT(f.realShape() < 4, /**/);
97 LASSERT(f.size() < 10, /**/);
98 // fi is a reference to the pointer type (GuiFontInfo *) in the
101 fontinfo_[f.family()][f.series()][f.realShape()][f.size()];
103 fi = new GuiFontInfo(f);
108 QString rawName(QString const & family)
110 for (size_t i = 0; i < nr_symbol_fonts; ++i)
111 if (family == symbol_fonts[i].family)
112 return symbol_fonts[i].xlfd;
114 LYXERR(Debug::FONT, "BUG: family not found !");
119 QString symbolFamily(FontFamily family)
121 for (size_t i = 0; i < nr_symbol_fonts; ++i) {
122 if (family == symbol_fonts[i].lyx_family)
123 return symbol_fonts[i].family;
129 bool isSymbolFamily(FontFamily family)
131 return family >= SYMBOL_FAMILY && family <= ESINT_FAMILY;
135 static bool isChosenFont(QFont & font, QString const & family)
137 // QFontInfo won't find a font that has only a few glyphs at unusual
138 // positions, e.g. the original esint10 font.
139 // The workaround is to add dummy glyphs at least at all ASCII
143 LYXERR(Debug::FONT, "got: " << fi.family());
145 if (fi.family().contains(family)) {
146 LYXERR(Debug::FONT, " got it ");
154 QFont symbolFont(QString const & family, bool * ok)
156 LYXERR(Debug::FONT, "Looking for font family " << family << " ... ");
157 QString upper = family;
158 upper[0] = family[0].toUpper();
161 font.setKerning(false);
162 font.setFamily(family);
164 if (isChosenFont(font, family)) {
165 LYXERR(Debug::FONT, "normal!");
170 LYXERR(Debug::FONT, "Trying " << upper << " ... ");
171 font.setFamily(upper);
173 if (isChosenFont(font, upper)) {
174 LYXERR(Debug::FONT, "upper!");
179 // A simple setFamily() fails on Qt 2
181 QString const raw = rawName(family);
182 LYXERR(Debug::FONT, "Trying " << raw << " ... ");
183 font.setRawName(raw);
185 if (isChosenFont(font, family)) {
186 LYXERR(Debug::FONT, "raw version!");
191 LYXERR(Debug::FONT, " FAILED :-(");
199 FontLoader::FontLoader()
201 QString const fonts_dir =
202 toqstr(addPath(package().system_support().absFilename(), "fonts"));
204 for (int i = 0 ; i < num_math_fonts; ++i) {
205 QString const font_file = fonts_dir + '/' + math_fonts[i] + ".ttf";
206 int fontID = QFontDatabase::addApplicationFont(font_file);
208 LYXERR(Debug::FONT, "Adding font " << font_file
209 << (fontID < 0 ? " FAIL" : " OK"));
212 for (int i1 = 0; i1 < NUM_FAMILIES; ++i1)
213 for (int i2 = 0; i2 < 2; ++i2)
214 for (int i3 = 0; i3 < 4; ++i3)
215 for (int i4 = 0; i4 < 10; ++i4)
216 fontinfo_[i1][i2][i3][i4] = 0;
220 void FontLoader::update()
222 for (int i1 = 0; i1 < NUM_FAMILIES; ++i1)
223 for (int i2 = 0; i2 < 2; ++i2)
224 for (int i3 = 0; i3 < 4; ++i3)
225 for (int i4 = 0; i4 < 10; ++i4) {
226 delete fontinfo_[i1][i2][i3][i4];
227 fontinfo_[i1][i2][i3][i4] = 0;
232 FontLoader::~FontLoader()
237 /////////////////////////////////////////////////
240 static QString makeFontName(QString const & family, QString const & foundry)
242 QString res = family;
243 if (!foundry.isEmpty())
244 res += " [" + foundry + ']';
249 GuiFontInfo::GuiFontInfo(FontInfo const & f)
252 font.setKerning(false);
253 QString const pat = symbolFamily(f.family());
254 if (!pat.isEmpty()) {
256 font = symbolFont(pat, &ok);
258 switch (f.family()) {
260 QString family = makeFontName(toqstr(lyxrc.roman_font_name),
261 toqstr(lyxrc.roman_font_foundry));
262 font.setFamily(family);
264 #if QT_VERSION >= 0x040300
265 // Workaround for a Qt bug, see http://bugzilla.lyx.org/show_bug.cgi?id=3684
266 // It is reported to Trolltech at 02/06/07 against 4.3 final.
267 // FIXME: Add an upper version limit as soon as the bug is fixed in Qt.
268 if (family == "Times" && !font.exactMatch())
269 font.setFamily("Times New Roman");
275 font.setFamily(makeFontName(toqstr(lyxrc.sans_font_name),
276 toqstr(lyxrc.sans_font_foundry)));
278 case TYPEWRITER_FAMILY:
279 font.setFamily(makeFontName(toqstr(lyxrc.typewriter_font_name),
280 toqstr(lyxrc.typewriter_font_foundry)));
287 switch (f.series()) {
289 font.setWeight(QFont::Normal);
292 font.setWeight(QFont::Bold);
298 switch (f.realShape()) {
301 font.setItalic(true);
307 LYXERR(Debug::FONT, "Font '" << stateText(f)
308 << "' matched by\n" << font.family());
310 // Is this an exact match?
311 if (font.exactMatch())
312 LYXERR(Debug::FONT, "This font is an exact match");
314 LYXERR(Debug::FONT, "This font is NOT an exact match");
316 LYXERR(Debug::FONT, "XFLD: " << font.rawName());
318 font.setPointSizeF(convert<double>(lyxrc.font_sizes[f.size()])
319 * lyxrc.zoom / 100.0);
321 LYXERR(Debug::FONT, "The font has size: " << font.pointSizeF());
323 if (f.realShape() != SMALLCAPS_SHAPE) {
324 metrics = GuiFontMetrics(font);
326 // handle small caps ourselves ...
327 FontInfo smallfont = f;
328 smallfont.decSize().decSize().setShape(UP_SHAPE);
330 font2.setKerning(false);
331 font2.setPointSizeF(convert<double>(lyxrc.font_sizes[smallfont.size()])
332 * lyxrc.zoom / 100.0);
334 metrics = GuiFontMetrics(font, font2);
339 bool FontLoader::available(FontInfo const & f)
341 static vector<int> cache_set(NUM_FAMILIES, false);
342 static vector<int> cache(NUM_FAMILIES, false);
344 FontFamily family = f.family();
345 if (cache_set[family])
346 return cache[family];
347 cache_set[family] = true;
349 QString const pat = symbolFamily(family);
351 // We don't care about non-symbol fonts
355 symbolFont(pat, &ok);
359 cache[family] = true;
364 FontMetrics const & FontLoader::metrics(FontInfo const & f)
366 return fontinfo(f).metrics;
370 GuiFontMetrics const & getFontMetrics(FontInfo const & f)
372 return fontinfo(f).metrics;
376 QFont const & getFont(FontInfo const & f)
378 return fontinfo(f).font;
381 } // namespace frontend