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 "esint10", "eufm10", "msam10", "msbm10", "rsfs10", "wasy10"};
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 { RSFS_FAMILY, "rsfs10", "-*-rsfs10-medium-*-*-*-*-*-*-*-*-*-*-*" },
81 { WASY_FAMILY, "wasy10", "-*-wasy10-medium-*-*-*-*-*-*-*-*-*-*-*" },
82 { ESINT_FAMILY, "esint10","-*-esint10-medium-*-*-*-*-*-*-*-*-*-*-*" }
85 size_t const nr_symbol_fonts = sizeof(symbol_fonts) / sizeof(symbol_fonts[0]);
88 static GuiFontInfo * fontinfo_[NUM_FAMILIES][2][4][10];
91 /// Get font info (font + metrics) for the given LyX font.
92 // if not cached, create it.
93 GuiFontInfo & fontinfo(FontInfo const & f)
95 LASSERT(f.family() < NUM_FAMILIES, /**/);
96 LASSERT(f.series() < 2, /**/);
97 LASSERT(f.realShape() < 4, /**/);
98 LASSERT(f.size() < 10, /**/);
99 // fi is a reference to the pointer type (GuiFontInfo *) in the
102 fontinfo_[f.family()][f.series()][f.realShape()][f.size()];
104 fi = new GuiFontInfo(f);
109 QString rawName(QString const & family)
111 for (size_t i = 0; i < nr_symbol_fonts; ++i)
112 if (family == symbol_fonts[i].family)
113 return symbol_fonts[i].xlfd;
115 LYXERR(Debug::FONT, "BUG: family not found !");
120 QString symbolFamily(FontFamily family)
122 for (size_t i = 0; i < nr_symbol_fonts; ++i) {
123 if (family == symbol_fonts[i].lyx_family)
124 return symbol_fonts[i].family;
130 bool isSymbolFamily(FontFamily family)
132 return family >= SYMBOL_FAMILY && family <= ESINT_FAMILY;
136 static bool isChosenFont(QFont & font, QString const & family)
138 // QFontInfo won't find a font that has only a few glyphs at unusual
139 // positions, e.g. the original esint10 font.
140 // The workaround is to add dummy glyphs at least at all ASCII
144 LYXERR(Debug::FONT, "got: " << fi.family());
146 if (fi.family().contains(family)) {
147 LYXERR(Debug::FONT, " got it ");
155 QFont symbolFont(QString const & family, bool * ok)
157 LYXERR(Debug::FONT, "Looking for font family " << family << " ... ");
158 QString upper = family;
159 upper[0] = family[0].toUpper();
162 font.setKerning(false);
163 font.setFamily(family);
165 if (isChosenFont(font, family)) {
166 LYXERR(Debug::FONT, "normal!");
171 LYXERR(Debug::FONT, "Trying " << upper << " ... ");
172 font.setFamily(upper);
174 if (isChosenFont(font, upper)) {
175 LYXERR(Debug::FONT, "upper!");
180 // A simple setFamily() fails on Qt 2
182 QString const raw = rawName(family);
183 LYXERR(Debug::FONT, "Trying " << raw << " ... ");
184 font.setRawName(raw);
186 if (isChosenFont(font, family)) {
187 LYXERR(Debug::FONT, "raw version!");
192 LYXERR(Debug::FONT, " FAILED :-(");
200 FontLoader::FontLoader()
202 QString const fonts_dir =
203 toqstr(addPath(package().system_support().absFileName(), "fonts"));
205 for (int i = 0 ; i < num_math_fonts; ++i) {
206 QString const font_file = fonts_dir + '/' + math_fonts[i] + ".ttf";
207 int fontID = QFontDatabase::addApplicationFont(font_file);
209 LYXERR(Debug::FONT, "Adding font " << font_file
210 << (fontID < 0 ? " FAIL" : " OK"));
213 for (int i1 = 0; i1 < NUM_FAMILIES; ++i1)
214 for (int i2 = 0; i2 < 2; ++i2)
215 for (int i3 = 0; i3 < 4; ++i3)
216 for (int i4 = 0; i4 < 10; ++i4)
217 fontinfo_[i1][i2][i3][i4] = 0;
221 void FontLoader::update()
223 for (int i1 = 0; i1 < NUM_FAMILIES; ++i1)
224 for (int i2 = 0; i2 < 2; ++i2)
225 for (int i3 = 0; i3 < 4; ++i3)
226 for (int i4 = 0; i4 < 10; ++i4) {
227 delete fontinfo_[i1][i2][i3][i4];
228 fontinfo_[i1][i2][i3][i4] = 0;
233 FontLoader::~FontLoader()
238 /////////////////////////////////////////////////
241 static QString makeFontName(QString const & family, QString const & foundry)
243 QString res = family;
244 if (!foundry.isEmpty())
245 res += " [" + foundry + ']';
250 GuiFontInfo::GuiFontInfo(FontInfo const & f)
253 font.setKerning(false);
254 QString const pat = symbolFamily(f.family());
255 if (!pat.isEmpty()) {
257 font = symbolFont(pat, &ok);
259 switch (f.family()) {
261 QString family = makeFontName(toqstr(lyxrc.roman_font_name),
262 toqstr(lyxrc.roman_font_foundry));
263 font.setFamily(family);
265 #if QT_VERSION >= 0x040300 //&& QT_VERSION < 0x040800
266 // Workaround for a Qt bug, see http://www.lyx.org/trac/ticket/3684
267 // and http://bugreports.qt.nokia.com/browse/QTBUG-11145.
268 // FIXME: Check whether this is really fixed in Qt 4.8
269 if (family == "Times" && !font.exactMatch())
270 font.setFamily("Times New Roman");
276 font.setFamily(makeFontName(toqstr(lyxrc.sans_font_name),
277 toqstr(lyxrc.sans_font_foundry)));
279 case TYPEWRITER_FAMILY:
280 font.setFamily(makeFontName(toqstr(lyxrc.typewriter_font_name),
281 toqstr(lyxrc.typewriter_font_foundry)));
288 switch (f.series()) {
290 font.setWeight(QFont::Normal);
293 font.setWeight(QFont::Bold);
299 switch (f.realShape()) {
302 font.setItalic(true);
308 LYXERR(Debug::FONT, "Font '" << stateText(f)
309 << "' matched by\n" << font.family());
311 // Is this an exact match?
312 if (font.exactMatch())
313 LYXERR(Debug::FONT, "This font is an exact match");
315 LYXERR(Debug::FONT, "This font is NOT an exact match");
317 LYXERR(Debug::FONT, "XFLD: " << font.rawName());
319 font.setPointSizeF(convert<double>(lyxrc.font_sizes[f.size()])
320 * lyxrc.zoom / 100.0);
322 LYXERR(Debug::FONT, "The font has size: " << font.pointSizeF());
324 if (f.realShape() != SMALLCAPS_SHAPE) {
325 metrics = GuiFontMetrics(font);
327 // handle small caps ourselves ...
328 FontInfo smallfont = f;
329 smallfont.decSize().decSize().setShape(UP_SHAPE);
331 font2.setKerning(false);
332 font2.setPointSizeF(convert<double>(lyxrc.font_sizes[smallfont.size()])
333 * lyxrc.zoom / 100.0);
335 metrics = GuiFontMetrics(font, font2);
340 bool FontLoader::available(FontInfo const & f)
342 static vector<int> cache_set(NUM_FAMILIES, false);
343 static vector<int> cache(NUM_FAMILIES, false);
345 FontFamily family = f.family();
346 if (cache_set[family])
347 return cache[family];
348 cache_set[family] = true;
350 QString const pat = symbolFamily(family);
352 // We don't care about non-symbol fonts
356 symbolFont(pat, &ok);
360 cache[family] = true;
365 FontMetrics const & FontLoader::metrics(FontInfo const & f)
367 return fontinfo(f).metrics;
371 GuiFontMetrics const & getFontMetrics(FontInfo const & f)
373 return fontinfo(f).metrics;
377 QFont const & getFont(FontInfo const & f)
379 return fontinfo(f).font;
382 } // namespace frontend