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/assert.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: " << fromqstr(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 "
157 << fromqstr(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 " << fromqstr(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 " << fromqstr(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 " << fromqstr(font_file)
210 << static_cast<const char *>
211 (fontID < 0 ? " FAIL" : " OK"));
214 for (int i1 = 0; i1 < NUM_FAMILIES; ++i1)
215 for (int i2 = 0; i2 < 2; ++i2)
216 for (int i3 = 0; i3 < 4; ++i3)
217 for (int i4 = 0; i4 < 10; ++i4)
218 fontinfo_[i1][i2][i3][i4] = 0;
222 void FontLoader::update()
224 for (int i1 = 0; i1 < NUM_FAMILIES; ++i1)
225 for (int i2 = 0; i2 < 2; ++i2)
226 for (int i3 = 0; i3 < 4; ++i3)
227 for (int i4 = 0; i4 < 10; ++i4) {
228 delete fontinfo_[i1][i2][i3][i4];
229 fontinfo_[i1][i2][i3][i4] = 0;
234 FontLoader::~FontLoader()
239 /////////////////////////////////////////////////
242 static QString makeFontName(QString const & family, QString const & foundry)
244 QString res = family;
245 if (!foundry.isEmpty())
246 res += " [" + foundry + ']';
251 GuiFontInfo::GuiFontInfo(FontInfo const & f)
254 font.setKerning(false);
255 QString const pat = symbolFamily(f.family());
256 if (!pat.isEmpty()) {
258 font = symbolFont(pat, &ok);
260 switch (f.family()) {
262 QString family = makeFontName(toqstr(lyxrc.roman_font_name),
263 toqstr(lyxrc.roman_font_foundry));
264 font.setFamily(family);
266 #if QT_VERSION >= 0x040300
267 // Workaround for a Qt bug, see http://bugzilla.lyx.org/show_bug.cgi?id=3684
268 // It is reported to Trolltech at 02/06/07 against 4.3 final.
269 // FIXME: Add an upper version limit as soon as the bug is fixed in Qt.
270 if (family == "Times" && !font.exactMatch())
271 font.setFamily("Times New Roman");
277 font.setFamily(makeFontName(toqstr(lyxrc.sans_font_name),
278 toqstr(lyxrc.sans_font_foundry)));
280 case TYPEWRITER_FAMILY:
281 font.setFamily(makeFontName(toqstr(lyxrc.typewriter_font_name),
282 toqstr(lyxrc.typewriter_font_foundry)));
289 switch (f.series()) {
291 font.setWeight(QFont::Normal);
294 font.setWeight(QFont::Bold);
300 switch (f.realShape()) {
303 font.setItalic(true);
309 LYXERR(Debug::FONT, "Font '" << to_utf8(stateText(f))
310 << "' matched by\n" << fromqstr(font.family()));
312 // Is this an exact match?
313 if (font.exactMatch())
314 LYXERR(Debug::FONT, "This font is an exact match");
316 LYXERR(Debug::FONT, "This font is NOT an exact match");
318 LYXERR(Debug::FONT, "XFLD: " << fromqstr(font.rawName()));
320 font.setPointSizeF(convert<double>(lyxrc.font_sizes[f.size()])
321 * lyxrc.zoom / 100.0);
323 LYXERR(Debug::FONT, "The font has size: " << font.pointSizeF());
325 if (f.realShape() != SMALLCAPS_SHAPE) {
326 metrics = GuiFontMetrics(font);
328 // handle small caps ourselves ...
329 FontInfo smallfont = f;
330 smallfont.decSize().decSize().setShape(UP_SHAPE);
332 font2.setKerning(false);
333 font2.setPointSizeF(convert<double>(lyxrc.font_sizes[smallfont.size()])
334 * lyxrc.zoom / 100.0);
336 metrics = GuiFontMetrics(font, font2);
341 bool FontLoader::available(FontInfo const & f)
343 static vector<int> cache_set(NUM_FAMILIES, false);
344 static vector<int> cache(NUM_FAMILIES, false);
346 FontFamily family = f.family();
347 if (cache_set[family])
348 return cache[family];
349 cache_set[family] = true;
351 QString const pat = symbolFamily(family);
353 // We don't care about non-symbol fonts
357 symbolFont(pat, &ok);
361 cache[family] = true;
366 FontMetrics const & FontLoader::metrics(FontInfo const & f)
368 return fontinfo(f).metrics;
372 GuiFontMetrics const & getFontMetrics(FontInfo const & f)
374 return fontinfo(f).metrics;
378 QFont const & getFont(FontInfo const & f)
380 return fontinfo(f).font;
383 } // namespace frontend