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/gettext.h"
26 #include "support/lstrings.h"
27 #include "support/Systemcall.h"
28 #include "support/Package.h"
29 #include "support/os.h"
32 #include <QFontDatabase>
34 #include "support/lassert.h"
37 using namespace lyx::support;
39 QString const math_fonts[] = {"cmex10", "cmmi10", "cmr10", "cmsy10",
40 "esint10", "eufm10", "msam10", "msbm10", "rsfs10", "stmary10",
42 int const num_math_fonts = sizeof(math_fonts) / sizeof(*math_fonts);
46 extern docstring const stateText(FontInfo const & f);
51 * Matches Fonts against
52 * actual QFont instances, and also caches metrics.
57 GuiFontInfo(FontInfo const & f);
61 /// Metrics on the font
62 GuiFontMetrics metrics;
68 FontFamily lyx_family;
73 SymbolFont symbol_fonts[] = {
74 { SYMBOL_FAMILY,"symbol", "-*-symbol-*-*-*-*-*-*-*-*-*-*-adobe-fontspecific"},
75 { CMR_FAMILY, "cmr10", "-*-cmr10-medium-*-*-*-*-*-*-*-*-*-*-*" },
76 { CMSY_FAMILY, "cmsy10", "-*-cmsy10-*-*-*-*-*-*-*-*-*-*-*-*" },
77 { CMM_FAMILY, "cmmi10", "-*-cmmi10-medium-*-*-*-*-*-*-*-*-*-*-*" },
78 { CMEX_FAMILY, "cmex10", "-*-cmex10-*-*-*-*-*-*-*-*-*-*-*-*" },
79 { MSA_FAMILY, "msam10", "-*-msam10-*-*-*-*-*-*-*-*-*-*-*-*" },
80 { MSB_FAMILY, "msbm10", "-*-msbm10-*-*-*-*-*-*-*-*-*-*-*-*" },
81 { EUFRAK_FAMILY,"eufm10", "-*-eufm10-medium-*-*-*-*-*-*-*-*-*-*-*" },
82 { RSFS_FAMILY, "rsfs10", "-*-rsfs10-medium-*-*-*-*-*-*-*-*-*-*-*" },
83 { STMARY_FAMILY,"stmary10","-*-stmary10-medium-*-*-*-*-*-*-*-*-*-*-*" },
84 { WASY_FAMILY, "wasy10", "-*-wasy10-medium-*-*-*-*-*-*-*-*-*-*-*" },
85 { ESINT_FAMILY, "esint10","-*-esint10-medium-*-*-*-*-*-*-*-*-*-*-*" }
88 size_t const nr_symbol_fonts = sizeof(symbol_fonts) / sizeof(symbol_fonts[0]);
91 static GuiFontInfo * fontinfo_[NUM_FAMILIES][NUM_SERIES][NUM_SHAPE][NUM_SIZE];
94 // Get font info (font + metrics) for the given LyX font.
95 // if not cached, create it.
96 GuiFontInfo & fontinfo(FontInfo const & f)
98 bool const fontIsRealized =
99 (f.family() < NUM_FAMILIES) &&
100 (f.series() < NUM_SERIES) &&
101 (f.realShape() < NUM_SHAPE) &&
102 (f.size() < NUM_SIZE);
103 if (!fontIsRealized) {
104 // We can reset the font to something sensible in release mode.
106 LYXERR0("Unrealized font!");
108 f2.realize(sane_font);
110 fontinfo_[f2.family()][f2.series()][f2.realShape()][f2.size()];
112 fi = new GuiFontInfo(f2);
115 // fi is a reference to the pointer type (GuiFontInfo *) in the
118 fontinfo_[f.family()][f.series()][f.realShape()][f.size()];
120 fi = new GuiFontInfo(f);
125 QString rawName(QString const & family)
127 for (size_t i = 0; i < nr_symbol_fonts; ++i)
128 if (family == symbol_fonts[i].family)
129 return symbol_fonts[i].xlfd;
131 LYXERR(Debug::FONT, "BUG: family not found !");
136 QString symbolFamily(FontFamily family)
138 for (size_t i = 0; i < nr_symbol_fonts; ++i) {
139 if (family == symbol_fonts[i].lyx_family)
140 return symbol_fonts[i].family;
147 bool isSymbolFamily(FontFamily family)
149 return family >= SYMBOL_FAMILY && family <= ESINT_FAMILY;
154 static bool isChosenFont(QFont & font, QString const & family,
155 QString const & style)
157 // QFontInfo won't find a font that has only a few glyphs at unusual
158 // positions, e.g. the original esint10 font.
159 // The workaround is to add dummy glyphs at least at all ASCII
163 LYXERR(Debug::FONT, "got: " << fi.family());
165 if (fi.family().contains(family)
166 #if QT_VERSION >= 0x040800
167 && (style.isEmpty() || fi.styleName().contains(style))
170 LYXERR(Debug::FONT, " got it ");
178 QFont symbolFont(QString const & family, bool * ok)
180 LYXERR(Debug::FONT, "Looking for font family " << family << " ... ");
181 QString upper = family;
182 upper[0] = family[0].toUpper();
185 font.setFamily(family);
186 #if QT_VERSION >= 0x040800
187 font.setStyleName("LyX");
189 if (isChosenFont(font, family, "LyX")) {
190 LYXERR(Debug::FONT, "lyx!");
195 LYXERR(Debug::FONT, "Trying normal " << family << " ... ");
196 font.setStyleName(QString());
199 if (isChosenFont(font, family, QString())) {
200 LYXERR(Debug::FONT, "normal!");
205 LYXERR(Debug::FONT, "Trying " << upper << " ... ");
206 font.setFamily(upper);
208 if (isChosenFont(font, upper, QString())) {
209 LYXERR(Debug::FONT, "upper!");
214 // A simple setFamily() fails on Qt 2
216 QString const raw = rawName(family);
217 LYXERR(Debug::FONT, "Trying " << raw << " ... ");
218 font.setRawName(raw);
220 if (isChosenFont(font, family, QString())) {
221 LYXERR(Debug::FONT, "raw version!");
226 LYXERR(Debug::FONT, " FAILED :-(");
234 FontLoader::FontLoader()
236 QString const fonts_dir =
237 toqstr(addPath(package().system_support().absFileName(), "fonts"));
239 for (int i = 0 ; i < num_math_fonts; ++i) {
240 QString const font_file = fonts_dir + math_fonts[i] + ".ttf";
241 int fontID = QFontDatabase::addApplicationFont(font_file);
243 LYXERR(Debug::FONT, "Adding font " << font_file
244 << (fontID < 0 ? " FAIL" : " OK"));
247 for (int i1 = 0; i1 < NUM_FAMILIES; ++i1)
248 for (int i2 = 0; i2 < NUM_SERIES; ++i2)
249 for (int i3 = 0; i3 < NUM_SHAPE; ++i3)
250 for (int i4 = 0; i4 < NUM_SIZE; ++i4)
251 fontinfo_[i1][i2][i3][i4] = 0;
255 void FontLoader::update()
257 for (int i1 = 0; i1 < NUM_FAMILIES; ++i1)
258 for (int i2 = 0; i2 < NUM_SERIES; ++i2)
259 for (int i3 = 0; i3 < NUM_SHAPE; ++i3)
260 for (int i4 = 0; i4 < NUM_SIZE; ++i4) {
261 delete fontinfo_[i1][i2][i3][i4];
262 fontinfo_[i1][i2][i3][i4] = 0;
267 FontLoader::~FontLoader()
272 /////////////////////////////////////////////////
276 QString makeFontName(QString const & family, QString const & foundry)
278 QString res = family;
279 if (!foundry.isEmpty())
280 res += " [" + foundry + ']';
285 QFont makeQFont(FontInfo const & f)
288 QString const pat = symbolFamily(f.family());
289 if (!pat.isEmpty()) {
291 font = symbolFont(pat, &ok);
293 switch (f.family()) {
295 QString family = makeFontName(toqstr(lyxrc.roman_font_name),
296 toqstr(lyxrc.roman_font_foundry));
297 font.setFamily(family);
299 #if QT_VERSION >= 0x040300 //&& QT_VERSION < 0x040800
300 // Workaround for a Qt bug, see http://www.lyx.org/trac/ticket/3684
301 // and http://bugreports.qt.nokia.com/browse/QTBUG-11145.
302 // FIXME: Check whether this is really fixed in Qt 4.8
303 if (family == "Times" && !font.exactMatch())
304 font.setFamily("Times New Roman");
310 font.setFamily(makeFontName(toqstr(lyxrc.sans_font_name),
311 toqstr(lyxrc.sans_font_foundry)));
313 case TYPEWRITER_FAMILY:
314 font.setFamily(makeFontName(toqstr(lyxrc.typewriter_font_name),
315 toqstr(lyxrc.typewriter_font_foundry)));
322 switch (f.series()) {
324 font.setWeight(QFont::Normal);
327 font.setWeight(QFont::Bold);
333 switch (f.realShape()) {
335 font.setStyle(QFont::StyleItalic);
338 font.setStyle(QFont::StyleOblique);
340 case SMALLCAPS_SHAPE:
341 font.setCapitalization(QFont::SmallCaps);
347 LYXERR(Debug::FONT, "Font '" << stateText(f)
348 << "' matched by\n" << font.family());
350 // Is this an exact match?
351 if (font.exactMatch())
352 LYXERR(Debug::FONT, "This font is an exact match");
354 LYXERR(Debug::FONT, "This font is NOT an exact match");
356 LYXERR(Debug::FONT, "XFLD: " << font.rawName());
358 font.setPointSizeF(convert<double>(lyxrc.font_sizes[f.size()])
359 * lyxrc.zoom / 100.0);
361 LYXERR(Debug::FONT, "The font has size: " << font.pointSizeF());
369 GuiFontInfo::GuiFontInfo(FontInfo const & f)
370 : font(makeQFont(f)), metrics(font)
374 bool FontLoader::available(FontInfo const & f)
377 static vector<int> cache_set(NUM_FAMILIES, false);
378 static vector<int> cache(NUM_FAMILIES, false);
380 FontFamily family = f.family();
382 // Apple ships a font name "Symbol", which has more or less the same
383 // glyphs as the original PostScript Symbol font, but it uses a different
384 // encoding (see https://en.wikipedia.org/wiki/Symbol_(typeface)#cite_note-2).
385 // Since we expect the font specific encoding of the original
386 // PostScript Symbol font, we can't use the one provided on OS X.
387 // See also the discussion in bug 7954.
388 if (f.family() == SYMBOL_FAMILY)
391 if (cache_set[family])
392 return cache[family];
393 cache_set[family] = true;
395 QString const pat = symbolFamily(family);
397 // We don't care about non-symbol fonts
401 symbolFont(pat, &ok);
405 cache[family] = true;
410 bool FontLoader::canBeDisplayed(char_type c)
414 // FIXME check whether this is still needed for Qt5
416 #if QT_VERSION < 0x050000 && defined(QT_MAC_USE_COCOA) && (QT_MAC_USE_COCOA > 0)
417 // bug 7954, see also comment in GuiPainter::text()
425 FontMetrics const & FontLoader::metrics(FontInfo const & f)
427 return fontinfo(f).metrics;
431 GuiFontMetrics const & getFontMetrics(FontInfo const & f)
433 return fontinfo(f).metrics;
437 QFont const & getFont(FontInfo const & f)
439 return fontinfo(f).font;
442 } // namespace frontend